diff options
| author |   Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
|---|---|---|
| committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
| commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
| tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/net/ethernet/sun/niu.c | |
| parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) | |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/net/ethernet/sun/niu.c')
| -rw-r--r-- | kernel/drivers/net/ethernet/sun/niu.c | 10220 |
1 files changed, 10220 insertions, 0 deletions
diff --git a/kernel/drivers/net/ethernet/sun/niu.c b/kernel/drivers/net/ethernet/sun/niu.c new file mode 100644 index 000000000..0c5842aeb --- /dev/null +++ b/kernel/drivers/net/ethernet/sun/niu.c @@ -0,0 +1,10220 @@ +/* niu.c: Neptune ethernet driver. + * + * Copyright (C) 2007, 2008 David S. Miller (davem@davemloft.net) + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/pci.h> +#include <linux/dma-mapping.h> +#include <linux/netdevice.h> +#include <linux/ethtool.h> +#include <linux/etherdevice.h> +#include <linux/platform_device.h> +#include <linux/delay.h> +#include <linux/bitops.h> +#include <linux/mii.h> +#include <linux/if.h> +#include <linux/if_ether.h> +#include <linux/if_vlan.h> +#include <linux/ip.h> +#include <linux/in.h> +#include <linux/ipv6.h> +#include <linux/log2.h> +#include <linux/jiffies.h> +#include <linux/crc32.h> +#include <linux/list.h> +#include <linux/slab.h> + +#include <linux/io.h> +#include <linux/of_device.h> + +#include "niu.h" + +#define DRV_MODULE_NAME "niu" +#define DRV_MODULE_VERSION "1.1" +#define DRV_MODULE_RELDATE "Apr 22, 2010" + +static char version[] = + DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n"; + +MODULE_AUTHOR("David S. Miller (davem@davemloft.net)"); +MODULE_DESCRIPTION("NIU ethernet driver"); +MODULE_LICENSE("GPL"); +MODULE_VERSION(DRV_MODULE_VERSION); + +#ifndef readq +static u64 readq(void __iomem *reg) +{ + return ((u64) readl(reg)) | (((u64) readl(reg + 4UL)) << 32); +} + +static void writeq(u64 val, void __iomem *reg) +{ + writel(val & 0xffffffff, reg); + writel(val >> 32, reg + 0x4UL); +} +#endif + +static const struct pci_device_id niu_pci_tbl[] = { + {PCI_DEVICE(PCI_VENDOR_ID_SUN, 0xabcd)}, + {} +}; + +MODULE_DEVICE_TABLE(pci, niu_pci_tbl); + +#define NIU_TX_TIMEOUT (5 * HZ) + +#define nr64(reg) readq(np->regs + (reg)) +#define nw64(reg, val) writeq((val), np->regs + (reg)) + +#define nr64_mac(reg) readq(np->mac_regs + (reg)) +#define nw64_mac(reg, val) writeq((val), np->mac_regs + (reg)) + +#define nr64_ipp(reg) readq(np->regs + np->ipp_off + (reg)) +#define nw64_ipp(reg, val) writeq((val), np->regs + np->ipp_off + (reg)) + +#define nr64_pcs(reg) readq(np->regs + np->pcs_off + (reg)) +#define nw64_pcs(reg, val) writeq((val), np->regs + np->pcs_off + (reg)) + +#define nr64_xpcs(reg) readq(np->regs + np->xpcs_off + (reg)) +#define nw64_xpcs(reg, val) writeq((val), np->regs + np->xpcs_off + (reg)) + +#define NIU_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK) + +static int niu_debug; +static int debug = -1; +module_param(debug, int, 0); +MODULE_PARM_DESC(debug, "NIU debug level"); + +#define niu_lock_parent(np, flags) \ + spin_lock_irqsave(&np->parent->lock, flags) +#define niu_unlock_parent(np, flags) \ + spin_unlock_irqrestore(&np->parent->lock, flags) + +static int serdes_init_10g_serdes(struct niu *np); + +static int __niu_wait_bits_clear_mac(struct niu *np, unsigned long reg, + u64 bits, int limit, int delay) +{ + while (--limit >= 0) { + u64 val = nr64_mac(reg); + + if (!(val & bits)) + break; + udelay(delay); + } + if (limit < 0) + return -ENODEV; + return 0; +} + +static int __niu_set_and_wait_clear_mac(struct niu *np, unsigned long reg, + u64 bits, int limit, int delay, + const char *reg_name) +{ + int err; + + nw64_mac(reg, bits); + err = __niu_wait_bits_clear_mac(np, reg, bits, limit, delay); + if (err) + netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n", + (unsigned long long)bits, reg_name, + (unsigned long long)nr64_mac(reg)); + return err; +} + +#define niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \ +({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \ + __niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \ +}) + +static int __niu_wait_bits_clear_ipp(struct niu *np, unsigned long reg, + u64 bits, int limit, int delay) +{ + while (--limit >= 0) { + u64 val = nr64_ipp(reg); + + if (!(val & bits)) + break; + udelay(delay); + } + if (limit < 0) + return -ENODEV; + return 0; +} + +static int __niu_set_and_wait_clear_ipp(struct niu *np, unsigned long reg, + u64 bits, int limit, int delay, + const char *reg_name) +{ + int err; + u64 val; + + val = nr64_ipp(reg); + val |= bits; + nw64_ipp(reg, val); + + err = __niu_wait_bits_clear_ipp(np, reg, bits, limit, delay); + if (err) + netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n", + (unsigned long long)bits, reg_name, + (unsigned long long)nr64_ipp(reg)); + return err; +} + +#define niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \ +({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \ + __niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \ +}) + +static int __niu_wait_bits_clear(struct niu *np, unsigned long reg, + u64 bits, int limit, int delay) +{ + while (--limit >= 0) { + u64 val = nr64(reg); + + if (!(val & bits)) + break; + udelay(delay); + } + if (limit < 0) + return -ENODEV; + return 0; +} + +#define niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY) \ +({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \ + __niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY); \ +}) + +static int __niu_set_and_wait_clear(struct niu *np, unsigned long reg, + u64 bits, int limit, int delay, + const char *reg_name) +{ + int err; + + nw64(reg, bits); + err = __niu_wait_bits_clear(np, reg, bits, limit, delay); + if (err) + netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n", + (unsigned long long)bits, reg_name, + (unsigned long long)nr64(reg)); + return err; +} + +#define niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \ +({ BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \ + __niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \ +}) + +static void niu_ldg_rearm(struct niu *np, struct niu_ldg *lp, int on) +{ + u64 val = (u64) lp->timer; + + if (on) + val |= LDG_IMGMT_ARM; + + nw64(LDG_IMGMT(lp->ldg_num), val); +} + +static int niu_ldn_irq_enable(struct niu *np, int ldn, int on) +{ + unsigned long mask_reg, bits; + u64 val; + + if (ldn < 0 || ldn > LDN_MAX) + return -EINVAL; + + if (ldn < 64) { + mask_reg = LD_IM0(ldn); + bits = LD_IM0_MASK; + } else { + mask_reg = LD_IM1(ldn - 64); + bits = LD_IM1_MASK; + } + + val = nr64(mask_reg); + if (on) + val &= ~bits; + else + val |= bits; + nw64(mask_reg, val); + + return 0; +} + +static int niu_enable_ldn_in_ldg(struct niu *np, struct niu_ldg *lp, int on) +{ + struct niu_parent *parent = np->parent; + int i; + + for (i = 0; i <= LDN_MAX; i++) { + int err; + + if (parent->ldg_map[i] != lp->ldg_num) + continue; + + err = niu_ldn_irq_enable(np, i, on); + if (err) + return err; + } + return 0; +} + +static int niu_enable_interrupts(struct niu *np, int on) +{ + int i; + + for (i = 0; i < np->num_ldg; i++) { + struct niu_ldg *lp = &np->ldg[i]; + int err; + + err = niu_enable_ldn_in_ldg(np, lp, on); + if (err) + return err; + } + for (i = 0; i < np->num_ldg; i++) + niu_ldg_rearm(np, &np->ldg[i], on); + + return 0; +} + +static u32 phy_encode(u32 type, int port) +{ + return type << (port * 2); +} + +static u32 phy_decode(u32 val, int port) +{ + return (val >> (port * 2)) & PORT_TYPE_MASK; +} + +static int mdio_wait(struct niu *np) +{ + int limit = 1000; + u64 val; + + while (--limit > 0) { + val = nr64(MIF_FRAME_OUTPUT); + if ((val >> MIF_FRAME_OUTPUT_TA_SHIFT) & 0x1) + return val & MIF_FRAME_OUTPUT_DATA; + + udelay(10); + } + + return -ENODEV; +} + +static int mdio_read(struct niu *np, int port, int dev, int reg) +{ + int err; + + nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg)); + err = mdio_wait(np); + if (err < 0) + return err; + + nw64(MIF_FRAME_OUTPUT, MDIO_READ_OP(port, dev)); + return mdio_wait(np); +} + +static int mdio_write(struct niu *np, int port, int dev, int reg, int data) +{ + int err; + + nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg)); + err = mdio_wait(np); + if (err < 0) + return err; + + nw64(MIF_FRAME_OUTPUT, MDIO_WRITE_OP(port, dev, data)); + err = mdio_wait(np); + if (err < 0) + return err; + + return 0; +} + +static int mii_read(struct niu *np, int port, int reg) +{ + nw64(MIF_FRAME_OUTPUT, MII_READ_OP(port, reg)); + return mdio_wait(np); +} + +static int mii_write(struct niu *np, int port, int reg, int data) +{ + int err; + + nw64(MIF_FRAME_OUTPUT, MII_WRITE_OP(port, reg, data)); + err = mdio_wait(np); + if (err < 0) + return err; + + return 0; +} + +static int esr2_set_tx_cfg(struct niu *np, unsigned long channel, u32 val) +{ + int err; + + err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR, + ESR2_TI_PLL_TX_CFG_L(channel), + val & 0xffff); + if (!err) + err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR, + ESR2_TI_PLL_TX_CFG_H(channel), + val >> 16); + return err; +} + +static int esr2_set_rx_cfg(struct niu *np, unsigned long channel, u32 val) +{ + int err; + + err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR, + ESR2_TI_PLL_RX_CFG_L(channel), + val & 0xffff); + if (!err) + err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR, + ESR2_TI_PLL_RX_CFG_H(channel), + val >> 16); + return err; +} + +/* Mode is always 10G fiber. */ +static int serdes_init_niu_10g_fiber(struct niu *np) +{ + struct niu_link_config *lp = &np->link_config; + u32 tx_cfg, rx_cfg; + unsigned long i; + + tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV); + rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT | + PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH | + PLL_RX_CFG_EQ_LP_ADAPTIVE); + + if (lp->loopback_mode == LOOPBACK_PHY) { + u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS; + + mdio_write(np, np->port, NIU_ESR2_DEV_ADDR, + ESR2_TI_PLL_TEST_CFG_L, test_cfg); + + tx_cfg |= PLL_TX_CFG_ENTEST; + rx_cfg |= PLL_RX_CFG_ENTEST; + } + + /* Initialize all 4 lanes of the SERDES. */ + for (i = 0; i < 4; i++) { + int err = esr2_set_tx_cfg(np, i, tx_cfg); + if (err) + return err; + } + + for (i = 0; i < 4; i++) { + int err = esr2_set_rx_cfg(np, i, rx_cfg); + if (err) + return err; + } + + return 0; +} + +static int serdes_init_niu_1g_serdes(struct niu *np) +{ + struct niu_link_config *lp = &np->link_config; + u16 pll_cfg, pll_sts; + int max_retry = 100; + u64 uninitialized_var(sig), mask, val; + u32 tx_cfg, rx_cfg; + unsigned long i; + int err; + + tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV | + PLL_TX_CFG_RATE_HALF); + rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT | + PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH | + PLL_RX_CFG_RATE_HALF); + + if (np->port == 0) + rx_cfg |= PLL_RX_CFG_EQ_LP_ADAPTIVE; + + if (lp->loopback_mode == LOOPBACK_PHY) { + u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS; + + mdio_write(np, np->port, NIU_ESR2_DEV_ADDR, + ESR2_TI_PLL_TEST_CFG_L, test_cfg); + + tx_cfg |= PLL_TX_CFG_ENTEST; + rx_cfg |= PLL_RX_CFG_ENTEST; + } + + /* Initialize PLL for 1G */ + pll_cfg = (PLL_CFG_ENPLL | PLL_CFG_MPY_8X); + + err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR, + ESR2_TI_PLL_CFG_L, pll_cfg); + if (err) { + netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_CFG_L failed\n", + np->port, __func__); + return err; + } + + pll_sts = PLL_CFG_ENPLL; + + err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR, + ESR2_TI_PLL_STS_L, pll_sts); + if (err) { + netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_STS_L failed\n", + np->port, __func__); + return err; + } + + udelay(200); + + /* Initialize all 4 lanes of the SERDES. */ + for (i = 0; i < 4; i++) { + err = esr2_set_tx_cfg(np, i, tx_cfg); + if (err) + return err; + } + + for (i = 0; i < 4; i++) { + err = esr2_set_rx_cfg(np, i, rx_cfg); + if (err) + return err; + } + + switch (np->port) { + case 0: + val = (ESR_INT_SRDY0_P0 | ESR_INT_DET0_P0); + mask = val; + break; + + case 1: + val = (ESR_INT_SRDY0_P1 | ESR_INT_DET0_P1); + mask = val; + break; + + default: + return -EINVAL; + } + + while (max_retry--) { + sig = nr64(ESR_INT_SIGNALS); + if ((sig & mask) == val) + break; + + mdelay(500); + } + + if ((sig & mask) != val) { + netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n", + np->port, (int)(sig & mask), (int)val); + return -ENODEV; + } + + return 0; +} + +static int serdes_init_niu_10g_serdes(struct niu *np) +{ + struct niu_link_config *lp = &np->link_config; + u32 tx_cfg, rx_cfg, pll_cfg, pll_sts; + int max_retry = 100; + u64 uninitialized_var(sig), mask, val; + unsigned long i; + int err; + + tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV); + rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT | + PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH | + PLL_RX_CFG_EQ_LP_ADAPTIVE); + + if (lp->loopback_mode == LOOPBACK_PHY) { + u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS; + + mdio_write(np, np->port, NIU_ESR2_DEV_ADDR, + ESR2_TI_PLL_TEST_CFG_L, test_cfg); + + tx_cfg |= PLL_TX_CFG_ENTEST; + rx_cfg |= PLL_RX_CFG_ENTEST; + } + + /* Initialize PLL for 10G */ + pll_cfg = (PLL_CFG_ENPLL | PLL_CFG_MPY_10X); + + err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR, + ESR2_TI_PLL_CFG_L, pll_cfg & 0xffff); + if (err) { + netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_CFG_L failed\n", + np->port, __func__); + return err; + } + + pll_sts = PLL_CFG_ENPLL; + + err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR, + ESR2_TI_PLL_STS_L, pll_sts & 0xffff); + if (err) { + netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_STS_L failed\n", + np->port, __func__); + return err; + } + + udelay(200); + + /* Initialize all 4 lanes of the SERDES. */ + for (i = 0; i < 4; i++) { + err = esr2_set_tx_cfg(np, i, tx_cfg); + if (err) + return err; + } + + for (i = 0; i < 4; i++) { + err = esr2_set_rx_cfg(np, i, rx_cfg); + if (err) + return err; + } + + /* check if serdes is ready */ + + switch (np->port) { + case 0: + mask = ESR_INT_SIGNALS_P0_BITS; + val = (ESR_INT_SRDY0_P0 | + ESR_INT_DET0_P0 | + ESR_INT_XSRDY_P0 | + ESR_INT_XDP_P0_CH3 | + ESR_INT_XDP_P0_CH2 | + ESR_INT_XDP_P0_CH1 | + ESR_INT_XDP_P0_CH0); + break; + + case 1: + mask = ESR_INT_SIGNALS_P1_BITS; + val = (ESR_INT_SRDY0_P1 | + ESR_INT_DET0_P1 | + ESR_INT_XSRDY_P1 | + ESR_INT_XDP_P1_CH3 | + ESR_INT_XDP_P1_CH2 | + ESR_INT_XDP_P1_CH1 | + ESR_INT_XDP_P1_CH0); + break; + + default: + return -EINVAL; + } + + while (max_retry--) { + sig = nr64(ESR_INT_SIGNALS); + if ((sig & mask) == val) + break; + + mdelay(500); + } + + if ((sig & mask) != val) { + pr_info("NIU Port %u signal bits [%08x] are not [%08x] for 10G...trying 1G\n", + np->port, (int)(sig & mask), (int)val); + + /* 10G failed, try initializing at 1G */ + err = serdes_init_niu_1g_serdes(np); + if (!err) { + np->flags &= ~NIU_FLAGS_10G; + np->mac_xcvr = MAC_XCVR_PCS; + } else { + netdev_err(np->dev, "Port %u 10G/1G SERDES Link Failed\n", + np->port); + return -ENODEV; + } + } + return 0; +} + +static int esr_read_rxtx_ctrl(struct niu *np, unsigned long chan, u32 *val) +{ + int err; + + err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR, ESR_RXTX_CTRL_L(chan)); + if (err >= 0) { + *val = (err & 0xffff); + err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR, + ESR_RXTX_CTRL_H(chan)); + if (err >= 0) + *val |= ((err & 0xffff) << 16); + err = 0; + } + return err; +} + +static int esr_read_glue0(struct niu *np, unsigned long chan, u32 *val) +{ + int err; + + err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR, + ESR_GLUE_CTRL0_L(chan)); + if (err >= 0) { + *val = (err & 0xffff); + err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR, + ESR_GLUE_CTRL0_H(chan)); + if (err >= 0) { + *val |= ((err & 0xffff) << 16); + err = 0; + } + } + return err; +} + +static int esr_read_reset(struct niu *np, u32 *val) +{ + int err; + + err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR, + ESR_RXTX_RESET_CTRL_L); + if (err >= 0) { + *val = (err & 0xffff); + err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR, + ESR_RXTX_RESET_CTRL_H); + if (err >= 0) { + *val |= ((err & 0xffff) << 16); + err = 0; + } + } + return err; +} + +static int esr_write_rxtx_ctrl(struct niu *np, unsigned long chan, u32 val) +{ + int err; + + err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR, + ESR_RXTX_CTRL_L(chan), val & 0xffff); + if (!err) + err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR, + ESR_RXTX_CTRL_H(chan), (val >> 16)); + return err; +} + +static int esr_write_glue0(struct niu *np, unsigned long chan, u32 val) +{ + int err; + + err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR, + ESR_GLUE_CTRL0_L(chan), val & 0xffff); + if (!err) + err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR, + ESR_GLUE_CTRL0_H(chan), (val >> 16)); + return err; +} + +static int esr_reset(struct niu *np) +{ + u32 uninitialized_var(reset); + int err; + + err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR, + ESR_RXTX_RESET_CTRL_L, 0x0000); + if (err) + return err; + err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR, + ESR_RXTX_RESET_CTRL_H, 0xffff); + if (err) + return err; + udelay(200); + + err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR, + ESR_RXTX_RESET_CTRL_L, 0xffff); + if (err) + return err; + udelay(200); + + err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR, + ESR_RXTX_RESET_CTRL_H, 0x0000); + if (err) + return err; + udelay(200); + + err = esr_read_reset(np, &reset); + if (err) + return err; + if (reset != 0) { + netdev_err(np->dev, "Port %u ESR_RESET did not clear [%08x]\n", + np->port, reset); + return -ENODEV; + } + + return 0; +} + +static int serdes_init_10g(struct niu *np) +{ + struct niu_link_config *lp = &np->link_config; + unsigned long ctrl_reg, test_cfg_reg, i; + u64 ctrl_val, test_cfg_val, sig, mask, val; + int err; + + switch (np->port) { + case 0: + ctrl_reg = ENET_SERDES_0_CTRL_CFG; + test_cfg_reg = ENET_SERDES_0_TEST_CFG; + break; + case 1: + ctrl_reg = ENET_SERDES_1_CTRL_CFG; + test_cfg_reg = ENET_SERDES_1_TEST_CFG; + break; + + default: + return -EINVAL; + } + ctrl_val = (ENET_SERDES_CTRL_SDET_0 | + ENET_SERDES_CTRL_SDET_1 | + ENET_SERDES_CTRL_SDET_2 | + ENET_SERDES_CTRL_SDET_3 | + (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) | + (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) | + (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) | + (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) | + (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) | + (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) | + (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) | + (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT)); + test_cfg_val = 0; + + if (lp->loopback_mode == LOOPBACK_PHY) { + test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK << + ENET_SERDES_TEST_MD_0_SHIFT) | + (ENET_TEST_MD_PAD_LOOPBACK << + ENET_SERDES_TEST_MD_1_SHIFT) | + (ENET_TEST_MD_PAD_LOOPBACK << + ENET_SERDES_TEST_MD_2_SHIFT) | + (ENET_TEST_MD_PAD_LOOPBACK << + ENET_SERDES_TEST_MD_3_SHIFT)); + } + + nw64(ctrl_reg, ctrl_val); + nw64(test_cfg_reg, test_cfg_val); + + /* Initialize all 4 lanes of the SERDES. */ + for (i = 0; i < 4; i++) { + u32 rxtx_ctrl, glue0; + + err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl); + if (err) + return err; + err = esr_read_glue0(np, i, &glue0); + if (err) + return err; + + rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO); + rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH | + (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT)); + + glue0 &= ~(ESR_GLUE_CTRL0_SRATE | + ESR_GLUE_CTRL0_THCNT | + ESR_GLUE_CTRL0_BLTIME); + glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB | + (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) | + (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) | + (BLTIME_300_CYCLES << + ESR_GLUE_CTRL0_BLTIME_SHIFT)); + + err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl); + if (err) + return err; + err = esr_write_glue0(np, i, glue0); + if (err) + return err; + } + + err = esr_reset(np); + if (err) + return err; + + sig = nr64(ESR_INT_SIGNALS); + switch (np->port) { + case 0: + mask = ESR_INT_SIGNALS_P0_BITS; + val = (ESR_INT_SRDY0_P0 | + ESR_INT_DET0_P0 | + ESR_INT_XSRDY_P0 | + ESR_INT_XDP_P0_CH3 | + ESR_INT_XDP_P0_CH2 | + ESR_INT_XDP_P0_CH1 | + ESR_INT_XDP_P0_CH0); + break; + + case 1: + mask = ESR_INT_SIGNALS_P1_BITS; + val = (ESR_INT_SRDY0_P1 | + ESR_INT_DET0_P1 | + ESR_INT_XSRDY_P1 | + ESR_INT_XDP_P1_CH3 | + ESR_INT_XDP_P1_CH2 | + ESR_INT_XDP_P1_CH1 | + ESR_INT_XDP_P1_CH0); + break; + + default: + return -EINVAL; + } + + if ((sig & mask) != val) { + if (np->flags & NIU_FLAGS_HOTPLUG_PHY) { + np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT; + return 0; + } + netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n", + np->port, (int)(sig & mask), (int)val); + return -ENODEV; + } + if (np->flags & NIU_FLAGS_HOTPLUG_PHY) + np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT; + return 0; +} + +static int serdes_init_1g(struct niu *np) +{ + u64 val; + + val = nr64(ENET_SERDES_1_PLL_CFG); + val &= ~ENET_SERDES_PLL_FBDIV2; + switch (np->port) { + case 0: + val |= ENET_SERDES_PLL_HRATE0; + break; + case 1: + val |= ENET_SERDES_PLL_HRATE1; + break; + case 2: + val |= ENET_SERDES_PLL_HRATE2; + break; + case 3: + val |= ENET_SERDES_PLL_HRATE3; + break; + default: + return -EINVAL; + } + nw64(ENET_SERDES_1_PLL_CFG, val); + + return 0; +} + +static int serdes_init_1g_serdes(struct niu *np) +{ + struct niu_link_config *lp = &np->link_config; + unsigned long ctrl_reg, test_cfg_reg, pll_cfg, i; + u64 ctrl_val, test_cfg_val, sig, mask, val; + int err; + u64 reset_val, val_rd; + + val = ENET_SERDES_PLL_HRATE0 | ENET_SERDES_PLL_HRATE1 | + ENET_SERDES_PLL_HRATE2 | ENET_SERDES_PLL_HRATE3 | + ENET_SERDES_PLL_FBDIV0; + switch (np->port) { + case 0: + reset_val = ENET_SERDES_RESET_0; + ctrl_reg = ENET_SERDES_0_CTRL_CFG; + test_cfg_reg = ENET_SERDES_0_TEST_CFG; + pll_cfg = ENET_SERDES_0_PLL_CFG; + break; + case 1: + reset_val = ENET_SERDES_RESET_1; + ctrl_reg = ENET_SERDES_1_CTRL_CFG; + test_cfg_reg = ENET_SERDES_1_TEST_CFG; + pll_cfg = ENET_SERDES_1_PLL_CFG; + break; + + default: + return -EINVAL; + } + ctrl_val = (ENET_SERDES_CTRL_SDET_0 | + ENET_SERDES_CTRL_SDET_1 | + ENET_SERDES_CTRL_SDET_2 | + ENET_SERDES_CTRL_SDET_3 | + (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) | + (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) | + (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) | + (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) | + (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) | + (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) | + (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) | + (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT)); + test_cfg_val = 0; + + if (lp->loopback_mode == LOOPBACK_PHY) { + test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK << + ENET_SERDES_TEST_MD_0_SHIFT) | + (ENET_TEST_MD_PAD_LOOPBACK << + ENET_SERDES_TEST_MD_1_SHIFT) | + (ENET_TEST_MD_PAD_LOOPBACK << + ENET_SERDES_TEST_MD_2_SHIFT) | + (ENET_TEST_MD_PAD_LOOPBACK << + ENET_SERDES_TEST_MD_3_SHIFT)); + } + + nw64(ENET_SERDES_RESET, reset_val); + mdelay(20); + val_rd = nr64(ENET_SERDES_RESET); + val_rd &= ~reset_val; + nw64(pll_cfg, val); + nw64(ctrl_reg, ctrl_val); + nw64(test_cfg_reg, test_cfg_val); + nw64(ENET_SERDES_RESET, val_rd); + mdelay(2000); + + /* Initialize all 4 lanes of the SERDES. */ + for (i = 0; i < 4; i++) { + u32 rxtx_ctrl, glue0; + + err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl); + if (err) + return err; + err = esr_read_glue0(np, i, &glue0); + if (err) + return err; + + rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO); + rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH | + (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT)); + + glue0 &= ~(ESR_GLUE_CTRL0_SRATE | + ESR_GLUE_CTRL0_THCNT | + ESR_GLUE_CTRL0_BLTIME); + glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB | + (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) | + (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) | + (BLTIME_300_CYCLES << + ESR_GLUE_CTRL0_BLTIME_SHIFT)); + + err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl); + if (err) + return err; + err = esr_write_glue0(np, i, glue0); + if (err) + return err; + } + + + sig = nr64(ESR_INT_SIGNALS); + switch (np->port) { + case 0: + val = (ESR_INT_SRDY0_P0 | ESR_INT_DET0_P0); + mask = val; + break; + + case 1: + val = (ESR_INT_SRDY0_P1 | ESR_INT_DET0_P1); + mask = val; + break; + + default: + return -EINVAL; + } + + if ((sig & mask) != val) { + netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n", + np->port, (int)(sig & mask), (int)val); + return -ENODEV; + } + + return 0; +} + +static int link_status_1g_serdes(struct niu *np, int *link_up_p) +{ + struct niu_link_config *lp = &np->link_config; + int link_up; + u64 val; + u16 current_speed; + unsigned long flags; + u8 current_duplex; + + link_up = 0; + current_speed = SPEED_INVALID; + current_duplex = DUPLEX_INVALID; + + spin_lock_irqsave(&np->lock, flags); + + val = nr64_pcs(PCS_MII_STAT); + + if (val & PCS_MII_STAT_LINK_STATUS) { + link_up = 1; + current_speed = SPEED_1000; + current_duplex = DUPLEX_FULL; + } + + lp->active_speed = current_speed; + lp->active_duplex = current_duplex; + spin_unlock_irqrestore(&np->lock, flags); + + *link_up_p = link_up; + return 0; +} + +static int link_status_10g_serdes(struct niu *np, int *link_up_p) +{ + unsigned long flags; + struct niu_link_config *lp = &np->link_config; + int link_up = 0; + int link_ok = 1; + u64 val, val2; + u16 current_speed; + u8 current_duplex; + + if (!(np->flags & NIU_FLAGS_10G)) + return link_status_1g_serdes(np, link_up_p); + + current_speed = SPEED_INVALID; + current_duplex = DUPLEX_INVALID; + spin_lock_irqsave(&np->lock, flags); + + val = nr64_xpcs(XPCS_STATUS(0)); + val2 = nr64_mac(XMAC_INTER2); + if (val2 & 0x01000000) + link_ok = 0; + + if ((val & 0x1000ULL) && link_ok) { + link_up = 1; + current_speed = SPEED_10000; + current_duplex = DUPLEX_FULL; + } + lp->active_speed = current_speed; + lp->active_duplex = current_duplex; + spin_unlock_irqrestore(&np->lock, flags); + *link_up_p = link_up; + return 0; +} + +static int link_status_mii(struct niu *np, int *link_up_p) +{ + struct niu_link_config *lp = &np->link_config; + int err; + int bmsr, advert, ctrl1000, stat1000, lpa, bmcr, estatus; + int supported, advertising, active_speed, active_duplex; + + err = mii_read(np, np->phy_addr, MII_BMCR); + if (unlikely(err < 0)) + return err; + bmcr = err; + + err = mii_read(np, np->phy_addr, MII_BMSR); + if (unlikely(err < 0)) + return err; + bmsr = err; + + err = mii_read(np, np->phy_addr, MII_ADVERTISE); + if (unlikely(err < 0)) + return err; + advert = err; + + err = mii_read(np, np->phy_addr, MII_LPA); + if (unlikely(err < 0)) + return err; + lpa = err; + + if (likely(bmsr & BMSR_ESTATEN)) { + err = mii_read(np, np->phy_addr, MII_ESTATUS); + if (unlikely(err < 0)) + return err; + estatus = err; + + err = mii_read(np, np->phy_addr, MII_CTRL1000); + if (unlikely(err < 0)) + return err; + ctrl1000 = err; + + err = mii_read(np, np->phy_addr, MII_STAT1000); + if (unlikely(err < 0)) + return err; + stat1000 = err; + } else + estatus = ctrl1000 = stat1000 = 0; + + supported = 0; + if (bmsr & BMSR_ANEGCAPABLE) + supported |= SUPPORTED_Autoneg; + if (bmsr & BMSR_10HALF) + supported |= SUPPORTED_10baseT_Half; + if (bmsr & BMSR_10FULL) + supported |= SUPPORTED_10baseT_Full; + if (bmsr & BMSR_100HALF) + supported |= SUPPORTED_100baseT_Half; + if (bmsr & BMSR_100FULL) + supported |= SUPPORTED_100baseT_Full; + if (estatus & ESTATUS_1000_THALF) + supported |= SUPPORTED_1000baseT_Half; + if (estatus & ESTATUS_1000_TFULL) + supported |= SUPPORTED_1000baseT_Full; + lp->supported = supported; + + advertising = mii_adv_to_ethtool_adv_t(advert); + advertising |= mii_ctrl1000_to_ethtool_adv_t(ctrl1000); + + if (bmcr & BMCR_ANENABLE) { + int neg, neg1000; + + lp->active_autoneg = 1; + advertising |= ADVERTISED_Autoneg; + + neg = advert & lpa; + neg1000 = (ctrl1000 << 2) & stat1000; + + if (neg1000 & (LPA_1000FULL | LPA_1000HALF)) + active_speed = SPEED_1000; + else if (neg & LPA_100) + active_speed = SPEED_100; + else if (neg & (LPA_10HALF | LPA_10FULL)) + active_speed = SPEED_10; + else + active_speed = SPEED_INVALID; + + if ((neg1000 & LPA_1000FULL) || (neg & LPA_DUPLEX)) + active_duplex = DUPLEX_FULL; + else if (active_speed != SPEED_INVALID) + active_duplex = DUPLEX_HALF; + else + active_duplex = DUPLEX_INVALID; + } else { + lp->active_autoneg = 0; + + if ((bmcr & BMCR_SPEED1000) && !(bmcr & BMCR_SPEED100)) + active_speed = SPEED_1000; + else if (bmcr & BMCR_SPEED100) + active_speed = SPEED_100; + else + active_speed = SPEED_10; + + if (bmcr & BMCR_FULLDPLX) + active_duplex = DUPLEX_FULL; + else + active_duplex = DUPLEX_HALF; + } + + lp->active_advertising = advertising; + lp->active_speed = active_speed; + lp->active_duplex = active_duplex; + *link_up_p = !!(bmsr & BMSR_LSTATUS); + + return 0; +} + +static int link_status_1g_rgmii(struct niu *np, int *link_up_p) +{ + struct niu_link_config *lp = &np->link_config; + u16 current_speed, bmsr; + unsigned long flags; + u8 current_duplex; + int err, link_up; + + link_up = 0; + current_speed = SPEED_INVALID; + current_duplex = DUPLEX_INVALID; + + spin_lock_irqsave(&np->lock, flags); + + err = -EINVAL; + + err = mii_read(np, np->phy_addr, MII_BMSR); + if (err < 0) + goto out; + + bmsr = err; + if (bmsr & BMSR_LSTATUS) { + u16 adv, lpa; + + err = mii_read(np, np->phy_addr, MII_ADVERTISE); + if (err < 0) + goto out; + adv = err; + + err = mii_read(np, np->phy_addr, MII_LPA); + if (err < 0) + goto out; + lpa = err; + + err = mii_read(np, np->phy_addr, MII_ESTATUS); + if (err < 0) + goto out; + link_up = 1; + current_speed = SPEED_1000; + current_duplex = DUPLEX_FULL; + + } + lp->active_speed = current_speed; + lp->active_duplex = current_duplex; + err = 0; + +out: + spin_unlock_irqrestore(&np->lock, flags); + + *link_up_p = link_up; + return err; +} + +static int link_status_1g(struct niu *np, int *link_up_p) +{ + struct niu_link_config *lp = &np->link_config; + unsigned long flags; + int err; + + spin_lock_irqsave(&np->lock, flags); + + err = link_status_mii(np, link_up_p); + lp->supported |= SUPPORTED_TP; + lp->active_advertising |= ADVERTISED_TP; + + spin_unlock_irqrestore(&np->lock, flags); + return err; +} + +static int bcm8704_reset(struct niu *np) +{ + int err, limit; + + err = mdio_read(np, np->phy_addr, + BCM8704_PHYXS_DEV_ADDR, MII_BMCR); + if (err < 0 || err == 0xffff) + return err; + err |= BMCR_RESET; + err = mdio_write(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR, + MII_BMCR, err); + if (err) + return err; + + limit = 1000; + while (--limit >= 0) { + err = mdio_read(np, np->phy_addr, + BCM8704_PHYXS_DEV_ADDR, MII_BMCR); + if (err < 0) + return err; + if (!(err & BMCR_RESET)) + break; + } + if (limit < 0) { + netdev_err(np->dev, "Port %u PHY will not reset (bmcr=%04x)\n", + np->port, (err & 0xffff)); + return -ENODEV; + } + return 0; +} + +/* When written, certain PHY registers need to be read back twice + * in order for the bits to settle properly. + */ +static int bcm8704_user_dev3_readback(struct niu *np, int reg) +{ + int err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg); + if (err < 0) + return err; + err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg); + if (err < 0) + return err; + return 0; +} + +static int bcm8706_init_user_dev3(struct niu *np) +{ + int err; + + + err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, + BCM8704_USER_OPT_DIGITAL_CTRL); + if (err < 0) + return err; + err &= ~USER_ODIG_CTRL_GPIOS; + err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT); + err |= USER_ODIG_CTRL_RESV2; + err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, + BCM8704_USER_OPT_DIGITAL_CTRL, err); + if (err) + return err; + + mdelay(1000); + + return 0; +} + +static int bcm8704_init_user_dev3(struct niu *np) +{ + int err; + + err = mdio_write(np, np->phy_addr, + BCM8704_USER_DEV3_ADDR, BCM8704_USER_CONTROL, + (USER_CONTROL_OPTXRST_LVL | + USER_CONTROL_OPBIASFLT_LVL | + USER_CONTROL_OBTMPFLT_LVL | + USER_CONTROL_OPPRFLT_LVL | + USER_CONTROL_OPTXFLT_LVL | + USER_CONTROL_OPRXLOS_LVL | + USER_CONTROL_OPRXFLT_LVL | + USER_CONTROL_OPTXON_LVL | + (0x3f << USER_CONTROL_RES1_SHIFT))); + if (err) + return err; + + err = mdio_write(np, np->phy_addr, + BCM8704_USER_DEV3_ADDR, BCM8704_USER_PMD_TX_CONTROL, + (USER_PMD_TX_CTL_XFP_CLKEN | + (1 << USER_PMD_TX_CTL_TX_DAC_TXD_SH) | + (2 << USER_PMD_TX_CTL_TX_DAC_TXCK_SH) | + USER_PMD_TX_CTL_TSCK_LPWREN)); + if (err) + return err; + + err = bcm8704_user_dev3_readback(np, BCM8704_USER_CONTROL); + if (err) + return err; + err = bcm8704_user_dev3_readback(np, BCM8704_USER_PMD_TX_CONTROL); + if (err) + return err; + + err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, + BCM8704_USER_OPT_DIGITAL_CTRL); + if (err < 0) + return err; + err &= ~USER_ODIG_CTRL_GPIOS; + err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT); + err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, + BCM8704_USER_OPT_DIGITAL_CTRL, err); + if (err) + return err; + + mdelay(1000); + + return 0; +} + +static int mrvl88x2011_act_led(struct niu *np, int val) +{ + int err; + + err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR, + MRVL88X2011_LED_8_TO_11_CTL); + if (err < 0) + return err; + + err &= ~MRVL88X2011_LED(MRVL88X2011_LED_ACT,MRVL88X2011_LED_CTL_MASK); + err |= MRVL88X2011_LED(MRVL88X2011_LED_ACT,val); + + return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR, + MRVL88X2011_LED_8_TO_11_CTL, err); +} + +static int mrvl88x2011_led_blink_rate(struct niu *np, int rate) +{ + int err; + + err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR, + MRVL88X2011_LED_BLINK_CTL); + if (err >= 0) { + err &= ~MRVL88X2011_LED_BLKRATE_MASK; + err |= (rate << 4); + + err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR, + MRVL88X2011_LED_BLINK_CTL, err); + } + + return err; +} + +static int xcvr_init_10g_mrvl88x2011(struct niu *np) +{ + int err; + + /* Set LED functions */ + err = mrvl88x2011_led_blink_rate(np, MRVL88X2011_LED_BLKRATE_134MS); + if (err) + return err; + + /* led activity */ + err = mrvl88x2011_act_led(np, MRVL88X2011_LED_CTL_OFF); + if (err) + return err; + + err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR, + MRVL88X2011_GENERAL_CTL); + if (err < 0) + return err; + + err |= MRVL88X2011_ENA_XFPREFCLK; + + err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR, + MRVL88X2011_GENERAL_CTL, err); + if (err < 0) + return err; + + err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR, + MRVL88X2011_PMA_PMD_CTL_1); + if (err < 0) + return err; + + if (np->link_config.loopback_mode == LOOPBACK_MAC) + err |= MRVL88X2011_LOOPBACK; + else + err &= ~MRVL88X2011_LOOPBACK; + + err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR, + MRVL88X2011_PMA_PMD_CTL_1, err); + if (err < 0) + return err; + + /* Enable PMD */ + return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR, + MRVL88X2011_10G_PMD_TX_DIS, MRVL88X2011_ENA_PMDTX); +} + + +static int xcvr_diag_bcm870x(struct niu *np) +{ + u16 analog_stat0, tx_alarm_status; + int err = 0; + +#if 1 + err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR, + MII_STAT1000); + if (err < 0) + return err; + pr_info("Port %u PMA_PMD(MII_STAT1000) [%04x]\n", np->port, err); + + err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, 0x20); + if (err < 0) + return err; + pr_info("Port %u USER_DEV3(0x20) [%04x]\n", np->port, err); + + err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR, + MII_NWAYTEST); + if (err < 0) + return err; + pr_info("Port %u PHYXS(MII_NWAYTEST) [%04x]\n", np->port, err); +#endif + + /* XXX dig this out it might not be so useful XXX */ + err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, + BCM8704_USER_ANALOG_STATUS0); + if (err < 0) + return err; + err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, + BCM8704_USER_ANALOG_STATUS0); + if (err < 0) + return err; + analog_stat0 = err; + + err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, + BCM8704_USER_TX_ALARM_STATUS); + if (err < 0) + return err; + err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, + BCM8704_USER_TX_ALARM_STATUS); + if (err < 0) + return err; + tx_alarm_status = err; + + if (analog_stat0 != 0x03fc) { + if ((analog_stat0 == 0x43bc) && (tx_alarm_status != 0)) { + pr_info("Port %u cable not connected or bad cable\n", + np->port); + } else if (analog_stat0 == 0x639c) { + pr_info("Port %u optical module is bad or missing\n", + np->port); + } + } + + return 0; +} + +static int xcvr_10g_set_lb_bcm870x(struct niu *np) +{ + struct niu_link_config *lp = &np->link_config; + int err; + + err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR, + MII_BMCR); + if (err < 0) + return err; + + err &= ~BMCR_LOOPBACK; + + if (lp->loopback_mode == LOOPBACK_MAC) + err |= BMCR_LOOPBACK; + + err = mdio_write(np, np->phy_addr, BCM8704_PCS_DEV_ADDR, + MII_BMCR, err); + if (err) + return err; + + return 0; +} + +static int xcvr_init_10g_bcm8706(struct niu *np) +{ + int err = 0; + u64 val; + + if ((np->flags & NIU_FLAGS_HOTPLUG_PHY) && + (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) == 0) + return err; + + val = nr64_mac(XMAC_CONFIG); + val &= ~XMAC_CONFIG_LED_POLARITY; + val |= XMAC_CONFIG_FORCE_LED_ON; + nw64_mac(XMAC_CONFIG, val); + + val = nr64(MIF_CONFIG); + val |= MIF_CONFIG_INDIRECT_MODE; + nw64(MIF_CONFIG, val); + + err = bcm8704_reset(np); + if (err) + return err; + + err = xcvr_10g_set_lb_bcm870x(np); + if (err) + return err; + + err = bcm8706_init_user_dev3(np); + if (err) + return err; + + err = xcvr_diag_bcm870x(np); + if (err) + return err; + + return 0; +} + +static int xcvr_init_10g_bcm8704(struct niu *np) +{ + int err; + + err = bcm8704_reset(np); + if (err) + return err; + + err = bcm8704_init_user_dev3(np); + if (err) + return err; + + err = xcvr_10g_set_lb_bcm870x(np); + if (err) + return err; + + err = xcvr_diag_bcm870x(np); + if (err) + return err; + + return 0; +} + +static int xcvr_init_10g(struct niu *np) +{ + int phy_id, err; + u64 val; + + val = nr64_mac(XMAC_CONFIG); + val &= ~XMAC_CONFIG_LED_POLARITY; + val |= XMAC_CONFIG_FORCE_LED_ON; + nw64_mac(XMAC_CONFIG, val); + + /* XXX shared resource, lock parent XXX */ + val = nr64(MIF_CONFIG); + val |= MIF_CONFIG_INDIRECT_MODE; + nw64(MIF_CONFIG, val); + + phy_id = phy_decode(np->parent->port_phy, np->port); + phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port]; + + /* handle different phy types */ + switch (phy_id & NIU_PHY_ID_MASK) { + case NIU_PHY_ID_MRVL88X2011: + err = xcvr_init_10g_mrvl88x2011(np); + break; + + default: /* bcom 8704 */ + err = xcvr_init_10g_bcm8704(np); + break; + } + + return err; +} + +static int mii_reset(struct niu *np) +{ + int limit, err; + + err = mii_write(np, np->phy_addr, MII_BMCR, BMCR_RESET); + if (err) + return err; + + limit = 1000; + while (--limit >= 0) { + udelay(500); + err = mii_read(np, np->phy_addr, MII_BMCR); + if (err < 0) + return err; + if (!(err & BMCR_RESET)) + break; + } + if (limit < 0) { + netdev_err(np->dev, "Port %u MII would not reset, bmcr[%04x]\n", + np->port, err); + return -ENODEV; + } + + return 0; +} + +static int xcvr_init_1g_rgmii(struct niu *np) +{ + int err; + u64 val; + u16 bmcr, bmsr, estat; + + val = nr64(MIF_CONFIG); + val &= ~MIF_CONFIG_INDIRECT_MODE; + nw64(MIF_CONFIG, val); + + err = mii_reset(np); + if (err) + return err; + + err = mii_read(np, np->phy_addr, MII_BMSR); + if (err < 0) + return err; + bmsr = err; + + estat = 0; + if (bmsr & BMSR_ESTATEN) { + err = mii_read(np, np->phy_addr, MII_ESTATUS); + if (err < 0) + return err; + estat = err; + } + + bmcr = 0; + err = mii_write(np, np->phy_addr, MII_BMCR, bmcr); + if (err) + return err; + + if (bmsr & BMSR_ESTATEN) { + u16 ctrl1000 = 0; + + if (estat & ESTATUS_1000_TFULL) + ctrl1000 |= ADVERTISE_1000FULL; + err = mii_write(np, np->phy_addr, MII_CTRL1000, ctrl1000); + if (err) + return err; + } + + bmcr = (BMCR_SPEED1000 | BMCR_FULLDPLX); + + err = mii_write(np, np->phy_addr, MII_BMCR, bmcr); + if (err) + return err; + + err = mii_read(np, np->phy_addr, MII_BMCR); + if (err < 0) + return err; + bmcr = mii_read(np, np->phy_addr, MII_BMCR); + + err = mii_read(np, np->phy_addr, MII_BMSR); + if (err < 0) + return err; + + return 0; +} + +static int mii_init_common(struct niu *np) +{ + struct niu_link_config *lp = &np->link_config; + u16 bmcr, bmsr, adv, estat; + int err; + + err = mii_reset(np); + if (err) + return err; + + err = mii_read(np, np->phy_addr, MII_BMSR); + if (err < 0) + return err; + bmsr = err; + + estat = 0; + if (bmsr & BMSR_ESTATEN) { + err = mii_read(np, np->phy_addr, MII_ESTATUS); + if (err < 0) + return err; + estat = err; + } + + bmcr = 0; + err = mii_write(np, np->phy_addr, MII_BMCR, bmcr); + if (err) + return err; + + if (lp->loopback_mode == LOOPBACK_MAC) { + bmcr |= BMCR_LOOPBACK; + if (lp->active_speed == SPEED_1000) + bmcr |= BMCR_SPEED1000; + if (lp->active_duplex == DUPLEX_FULL) + bmcr |= BMCR_FULLDPLX; + } + + if (lp->loopback_mode == LOOPBACK_PHY) { + u16 aux; + + aux = (BCM5464R_AUX_CTL_EXT_LB | + BCM5464R_AUX_CTL_WRITE_1); + err = mii_write(np, np->phy_addr, BCM5464R_AUX_CTL, aux); + if (err) + return err; + } + + if (lp->autoneg) { + u16 ctrl1000; + + adv = ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP; + if ((bmsr & BMSR_10HALF) && + (lp->advertising & ADVERTISED_10baseT_Half)) + adv |= ADVERTISE_10HALF; + if ((bmsr & BMSR_10FULL) && + (lp->advertising & ADVERTISED_10baseT_Full)) + adv |= ADVERTISE_10FULL; + if ((bmsr & BMSR_100HALF) && + (lp->advertising & ADVERTISED_100baseT_Half)) + adv |= ADVERTISE_100HALF; + if ((bmsr & BMSR_100FULL) && + (lp->advertising & ADVERTISED_100baseT_Full)) + adv |= ADVERTISE_100FULL; + err = mii_write(np, np->phy_addr, MII_ADVERTISE, adv); + if (err) + return err; + + if (likely(bmsr & BMSR_ESTATEN)) { + ctrl1000 = 0; + if ((estat & ESTATUS_1000_THALF) && + (lp->advertising & ADVERTISED_1000baseT_Half)) + ctrl1000 |= ADVERTISE_1000HALF; + if ((estat & ESTATUS_1000_TFULL) && + (lp->advertising & ADVERTISED_1000baseT_Full)) + ctrl1000 |= ADVERTISE_1000FULL; + err = mii_write(np, np->phy_addr, + MII_CTRL1000, ctrl1000); + if (err) + return err; + } + + bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART); + } else { + /* !lp->autoneg */ + int fulldpx; + + if (lp->duplex == DUPLEX_FULL) { + bmcr |= BMCR_FULLDPLX; + fulldpx = 1; + } else if (lp->duplex == DUPLEX_HALF) + fulldpx = 0; + else + return -EINVAL; + + if (lp->speed == SPEED_1000) { + /* if X-full requested while not supported, or + X-half requested while not supported... */ + if ((fulldpx && !(estat & ESTATUS_1000_TFULL)) || + (!fulldpx && !(estat & ESTATUS_1000_THALF))) + return -EINVAL; + bmcr |= BMCR_SPEED1000; + } else if (lp->speed == SPEED_100) { + if ((fulldpx && !(bmsr & BMSR_100FULL)) || + (!fulldpx && !(bmsr & BMSR_100HALF))) + return -EINVAL; + bmcr |= BMCR_SPEED100; + } else if (lp->speed == SPEED_10) { + if ((fulldpx && !(bmsr & BMSR_10FULL)) || + (!fulldpx && !(bmsr & BMSR_10HALF))) + return -EINVAL; + } else + return -EINVAL; + } + + err = mii_write(np, np->phy_addr, MII_BMCR, bmcr); + if (err) + return err; + +#if 0 + err = mii_read(np, np->phy_addr, MII_BMCR); + if (err < 0) + return err; + bmcr = err; + + err = mii_read(np, np->phy_addr, MII_BMSR); + if (err < 0) + return err; + bmsr = err; + + pr_info("Port %u after MII init bmcr[%04x] bmsr[%04x]\n", + np->port, bmcr, bmsr); +#endif + + return 0; +} + +static int xcvr_init_1g(struct niu *np) +{ + u64 val; + + /* XXX shared resource, lock parent XXX */ + val = nr64(MIF_CONFIG); + val &= ~MIF_CONFIG_INDIRECT_MODE; + nw64(MIF_CONFIG, val); + + return mii_init_common(np); +} + +static int niu_xcvr_init(struct niu *np) +{ + const struct niu_phy_ops *ops = np->phy_ops; + int err; + + err = 0; + if (ops->xcvr_init) + err = ops->xcvr_init(np); + + return err; +} + +static int niu_serdes_init(struct niu *np) +{ + const struct niu_phy_ops *ops = np->phy_ops; + int err; + + err = 0; + if (ops->serdes_init) + err = ops->serdes_init(np); + + return err; +} + +static void niu_init_xif(struct niu *); +static void niu_handle_led(struct niu *, int status); + +static int niu_link_status_common(struct niu *np, int link_up) +{ + struct niu_link_config *lp = &np->link_config; + struct net_device *dev = np->dev; + unsigned long flags; + + if (!netif_carrier_ok(dev) && link_up) { + netif_info(np, link, dev, "Link is up at %s, %s duplex\n", + lp->active_speed == SPEED_10000 ? "10Gb/sec" : + lp->active_speed == SPEED_1000 ? "1Gb/sec" : + lp->active_speed == SPEED_100 ? "100Mbit/sec" : + "10Mbit/sec", + lp->active_duplex == DUPLEX_FULL ? "full" : "half"); + + spin_lock_irqsave(&np->lock, flags); + niu_init_xif(np); + niu_handle_led(np, 1); + spin_unlock_irqrestore(&np->lock, flags); + + netif_carrier_on(dev); + } else if (netif_carrier_ok(dev) && !link_up) { + netif_warn(np, link, dev, "Link is down\n"); + spin_lock_irqsave(&np->lock, flags); + niu_handle_led(np, 0); + spin_unlock_irqrestore(&np->lock, flags); + netif_carrier_off(dev); + } + + return 0; +} + +static int link_status_10g_mrvl(struct niu *np, int *link_up_p) +{ + int err, link_up, pma_status, pcs_status; + + link_up = 0; + + err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR, + MRVL88X2011_10G_PMD_STATUS_2); + if (err < 0) + goto out; + + /* Check PMA/PMD Register: 1.0001.2 == 1 */ + err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR, + MRVL88X2011_PMA_PMD_STATUS_1); + if (err < 0) + goto out; + + pma_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0); + + /* Check PMC Register : 3.0001.2 == 1: read twice */ + err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR, + MRVL88X2011_PMA_PMD_STATUS_1); + if (err < 0) + goto out; + + err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR, + MRVL88X2011_PMA_PMD_STATUS_1); + if (err < 0) + goto out; + + pcs_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0); + + /* Check XGXS Register : 4.0018.[0-3,12] */ + err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV4_ADDR, + MRVL88X2011_10G_XGXS_LANE_STAT); + if (err < 0) + goto out; + + if (err == (PHYXS_XGXS_LANE_STAT_ALINGED | PHYXS_XGXS_LANE_STAT_LANE3 | + PHYXS_XGXS_LANE_STAT_LANE2 | PHYXS_XGXS_LANE_STAT_LANE1 | + PHYXS_XGXS_LANE_STAT_LANE0 | PHYXS_XGXS_LANE_STAT_MAGIC | + 0x800)) + link_up = (pma_status && pcs_status) ? 1 : 0; + + np->link_config.active_speed = SPEED_10000; + np->link_config.active_duplex = DUPLEX_FULL; + err = 0; +out: + mrvl88x2011_act_led(np, (link_up ? + MRVL88X2011_LED_CTL_PCS_ACT : + MRVL88X2011_LED_CTL_OFF)); + + *link_up_p = link_up; + return err; +} + +static int link_status_10g_bcm8706(struct niu *np, int *link_up_p) +{ + int err, link_up; + link_up = 0; + + err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR, + BCM8704_PMD_RCV_SIGDET); + if (err < 0 || err == 0xffff) + goto out; + if (!(err & PMD_RCV_SIGDET_GLOBAL)) { + err = 0; + goto out; + } + + err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR, + BCM8704_PCS_10G_R_STATUS); + if (err < 0) + goto out; + + if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) { + err = 0; + goto out; + } + + err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR, + BCM8704_PHYXS_XGXS_LANE_STAT); + if (err < 0) + goto out; + if (err != (PHYXS_XGXS_LANE_STAT_ALINGED | + PHYXS_XGXS_LANE_STAT_MAGIC | + PHYXS_XGXS_LANE_STAT_PATTEST | + PHYXS_XGXS_LANE_STAT_LANE3 | + PHYXS_XGXS_LANE_STAT_LANE2 | + PHYXS_XGXS_LANE_STAT_LANE1 | + PHYXS_XGXS_LANE_STAT_LANE0)) { + err = 0; + np->link_config.active_speed = SPEED_INVALID; + np->link_config.active_duplex = DUPLEX_INVALID; + goto out; + } + + link_up = 1; + np->link_config.active_speed = SPEED_10000; + np->link_config.active_duplex = DUPLEX_FULL; + err = 0; + +out: + *link_up_p = link_up; + return err; +} + +static int link_status_10g_bcom(struct niu *np, int *link_up_p) +{ + int err, link_up; + + link_up = 0; + + err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR, + BCM8704_PMD_RCV_SIGDET); + if (err < 0) + goto out; + if (!(err & PMD_RCV_SIGDET_GLOBAL)) { + err = 0; + goto out; + } + + err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR, + BCM8704_PCS_10G_R_STATUS); + if (err < 0) + goto out; + if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) { + err = 0; + goto out; + } + + err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR, + BCM8704_PHYXS_XGXS_LANE_STAT); + if (err < 0) + goto out; + + if (err != (PHYXS_XGXS_LANE_STAT_ALINGED | + PHYXS_XGXS_LANE_STAT_MAGIC | + PHYXS_XGXS_LANE_STAT_LANE3 | + PHYXS_XGXS_LANE_STAT_LANE2 | + PHYXS_XGXS_LANE_STAT_LANE1 | + PHYXS_XGXS_LANE_STAT_LANE0)) { + err = 0; + goto out; + } + + link_up = 1; + np->link_config.active_speed = SPEED_10000; + np->link_config.active_duplex = DUPLEX_FULL; + err = 0; + +out: + *link_up_p = link_up; + return err; +} + +static int link_status_10g(struct niu *np, int *link_up_p) +{ + unsigned long flags; + int err = -EINVAL; + + spin_lock_irqsave(&np->lock, flags); + + if (np->link_config.loopback_mode == LOOPBACK_DISABLED) { + int phy_id; + + phy_id = phy_decode(np->parent->port_phy, np->port); + phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port]; + + /* handle different phy types */ + switch (phy_id & NIU_PHY_ID_MASK) { + case NIU_PHY_ID_MRVL88X2011: + err = link_status_10g_mrvl(np, link_up_p); + break; + + default: /* bcom 8704 */ + err = link_status_10g_bcom(np, link_up_p); + break; + } + } + + spin_unlock_irqrestore(&np->lock, flags); + + return err; +} + +static int niu_10g_phy_present(struct niu *np) +{ + u64 sig, mask, val; + + sig = nr64(ESR_INT_SIGNALS); + switch (np->port) { + case 0: + mask = ESR_INT_SIGNALS_P0_BITS; + val = (ESR_INT_SRDY0_P0 | + ESR_INT_DET0_P0 | + ESR_INT_XSRDY_P0 | + ESR_INT_XDP_P0_CH3 | + ESR_INT_XDP_P0_CH2 | + ESR_INT_XDP_P0_CH1 | + ESR_INT_XDP_P0_CH0); + break; + + case 1: + mask = ESR_INT_SIGNALS_P1_BITS; + val = (ESR_INT_SRDY0_P1 | + ESR_INT_DET0_P1 | + ESR_INT_XSRDY_P1 | + ESR_INT_XDP_P1_CH3 | + ESR_INT_XDP_P1_CH2 | + ESR_INT_XDP_P1_CH1 | + ESR_INT_XDP_P1_CH0); + break; + + default: + return 0; + } + + if ((sig & mask) != val) + return 0; + return 1; +} + +static int link_status_10g_hotplug(struct niu *np, int *link_up_p) +{ + unsigned long flags; + int err = 0; + int phy_present; + int phy_present_prev; + + spin_lock_irqsave(&np->lock, flags); + + if (np->link_config.loopback_mode == LOOPBACK_DISABLED) { + phy_present_prev = (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) ? + 1 : 0; + phy_present = niu_10g_phy_present(np); + if (phy_present != phy_present_prev) { + /* state change */ + if (phy_present) { + /* A NEM was just plugged in */ + np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT; + if (np->phy_ops->xcvr_init) + err = np->phy_ops->xcvr_init(np); + if (err) { + err = mdio_read(np, np->phy_addr, + BCM8704_PHYXS_DEV_ADDR, MII_BMCR); + if (err == 0xffff) { + /* No mdio, back-to-back XAUI */ + goto out; + } + /* debounce */ + np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT; + } + } else { + np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT; + *link_up_p = 0; + netif_warn(np, link, np->dev, + "Hotplug PHY Removed\n"); + } + } +out: + if (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) { + err = link_status_10g_bcm8706(np, link_up_p); + if (err == 0xffff) { + /* No mdio, back-to-back XAUI: it is C10NEM */ + *link_up_p = 1; + np->link_config.active_speed = SPEED_10000; + np->link_config.active_duplex = DUPLEX_FULL; + } + } + } + + spin_unlock_irqrestore(&np->lock, flags); + + return 0; +} + +static int niu_link_status(struct niu *np, int *link_up_p) +{ + const struct niu_phy_ops *ops = np->phy_ops; + int err; + + err = 0; + if (ops->link_status) + err = ops->link_status(np, link_up_p); + + return err; +} + +static void niu_timer(unsigned long __opaque) +{ + struct niu *np = (struct niu *) __opaque; + unsigned long off; + int err, link_up; + + err = niu_link_status(np, &link_up); + if (!err) + niu_link_status_common(np, link_up); + + if (netif_carrier_ok(np->dev)) + off = 5 * HZ; + else + off = 1 * HZ; + np->timer.expires = jiffies + off; + + add_timer(&np->timer); +} + +static const struct niu_phy_ops phy_ops_10g_serdes = { + .serdes_init = serdes_init_10g_serdes, + .link_status = link_status_10g_serdes, +}; + +static const struct niu_phy_ops phy_ops_10g_serdes_niu = { + .serdes_init = serdes_init_niu_10g_serdes, + .link_status = link_status_10g_serdes, +}; + +static const struct niu_phy_ops phy_ops_1g_serdes_niu = { + .serdes_init = serdes_init_niu_1g_serdes, + .link_status = link_status_1g_serdes, +}; + +static const struct niu_phy_ops phy_ops_1g_rgmii = { + .xcvr_init = xcvr_init_1g_rgmii, + .link_status = link_status_1g_rgmii, +}; + +static const struct niu_phy_ops phy_ops_10g_fiber_niu = { + .serdes_init = serdes_init_niu_10g_fiber, + .xcvr_init = xcvr_init_10g, + .link_status = link_status_10g, +}; + +static const struct niu_phy_ops phy_ops_10g_fiber = { + .serdes_init = serdes_init_10g, + .xcvr_init = xcvr_init_10g, + .link_status = link_status_10g, +}; + +static const struct niu_phy_ops phy_ops_10g_fiber_hotplug = { + .serdes_init = serdes_init_10g, + .xcvr_init = xcvr_init_10g_bcm8706, + .link_status = link_status_10g_hotplug, +}; + +static const struct niu_phy_ops phy_ops_niu_10g_hotplug = { + .serdes_init = serdes_init_niu_10g_fiber, + .xcvr_init = xcvr_init_10g_bcm8706, + .link_status = link_status_10g_hotplug, +}; + +static const struct niu_phy_ops phy_ops_10g_copper = { + .serdes_init = serdes_init_10g, + .link_status = link_status_10g, /* XXX */ +}; + +static const struct niu_phy_ops phy_ops_1g_fiber = { + .serdes_init = serdes_init_1g, + .xcvr_init = xcvr_init_1g, + .link_status = link_status_1g, +}; + +static const struct niu_phy_ops phy_ops_1g_copper = { + .xcvr_init = xcvr_init_1g, + .link_status = link_status_1g, +}; + +struct niu_phy_template { + const struct niu_phy_ops *ops; + u32 phy_addr_base; +}; + +static const struct niu_phy_template phy_template_niu_10g_fiber = { + .ops = &phy_ops_10g_fiber_niu, + .phy_addr_base = 16, +}; + +static const struct niu_phy_template phy_template_niu_10g_serdes = { + .ops = &phy_ops_10g_serdes_niu, + .phy_addr_base = 0, +}; + +static const struct niu_phy_template phy_template_niu_1g_serdes = { + .ops = &phy_ops_1g_serdes_niu, + .phy_addr_base = 0, +}; + +static const struct niu_phy_template phy_template_10g_fiber = { + .ops = &phy_ops_10g_fiber, + .phy_addr_base = 8, +}; + +static const struct niu_phy_template phy_template_10g_fiber_hotplug = { + .ops = &phy_ops_10g_fiber_hotplug, + .phy_addr_base = 8, +}; + +static const struct niu_phy_template phy_template_niu_10g_hotplug = { + .ops = &phy_ops_niu_10g_hotplug, + .phy_addr_base = 8, +}; + +static const struct niu_phy_template phy_template_10g_copper = { + .ops = &phy_ops_10g_copper, + .phy_addr_base = 10, +}; + +static const struct niu_phy_template phy_template_1g_fiber = { + .ops = &phy_ops_1g_fiber, + .phy_addr_base = 0, +}; + +static const struct niu_phy_template phy_template_1g_copper = { + .ops = &phy_ops_1g_copper, + .phy_addr_base = 0, +}; + +static const struct niu_phy_template phy_template_1g_rgmii = { + .ops = &phy_ops_1g_rgmii, + .phy_addr_base = 0, +}; + +static const struct niu_phy_template phy_template_10g_serdes = { + .ops = &phy_ops_10g_serdes, + .phy_addr_base = 0, +}; + +static int niu_atca_port_num[4] = { + 0, 0, 11, 10 +}; + +static int serdes_init_10g_serdes(struct niu *np) +{ + struct niu_link_config *lp = &np->link_config; + unsigned long ctrl_reg, test_cfg_reg, pll_cfg, i; + u64 ctrl_val, test_cfg_val, sig, mask, val; + + switch (np->port) { + case 0: + ctrl_reg = ENET_SERDES_0_CTRL_CFG; + test_cfg_reg = ENET_SERDES_0_TEST_CFG; + pll_cfg = ENET_SERDES_0_PLL_CFG; + break; + case 1: + ctrl_reg = ENET_SERDES_1_CTRL_CFG; + test_cfg_reg = ENET_SERDES_1_TEST_CFG; + pll_cfg = ENET_SERDES_1_PLL_CFG; + break; + + default: + return -EINVAL; + } + ctrl_val = (ENET_SERDES_CTRL_SDET_0 | + ENET_SERDES_CTRL_SDET_1 | + ENET_SERDES_CTRL_SDET_2 | + ENET_SERDES_CTRL_SDET_3 | + (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) | + (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) | + (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) | + (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) | + (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) | + (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) | + (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) | + (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT)); + test_cfg_val = 0; + + if (lp->loopback_mode == LOOPBACK_PHY) { + test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK << + ENET_SERDES_TEST_MD_0_SHIFT) | + (ENET_TEST_MD_PAD_LOOPBACK << + ENET_SERDES_TEST_MD_1_SHIFT) | + (ENET_TEST_MD_PAD_LOOPBACK << + ENET_SERDES_TEST_MD_2_SHIFT) | + (ENET_TEST_MD_PAD_LOOPBACK << + ENET_SERDES_TEST_MD_3_SHIFT)); + } + + esr_reset(np); + nw64(pll_cfg, ENET_SERDES_PLL_FBDIV2); + nw64(ctrl_reg, ctrl_val); + nw64(test_cfg_reg, test_cfg_val); + + /* Initialize all 4 lanes of the SERDES. */ + for (i = 0; i < 4; i++) { + u32 rxtx_ctrl, glue0; + int err; + + err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl); + if (err) + return err; + err = esr_read_glue0(np, i, &glue0); + if (err) + return err; + + rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO); + rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH | + (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT)); + + glue0 &= ~(ESR_GLUE_CTRL0_SRATE | + ESR_GLUE_CTRL0_THCNT | + ESR_GLUE_CTRL0_BLTIME); + glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB | + (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) | + (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) | + (BLTIME_300_CYCLES << + ESR_GLUE_CTRL0_BLTIME_SHIFT)); + + err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl); + if (err) + return err; + err = esr_write_glue0(np, i, glue0); + if (err) + return err; + } + + + sig = nr64(ESR_INT_SIGNALS); + switch (np->port) { + case 0: + mask = ESR_INT_SIGNALS_P0_BITS; + val = (ESR_INT_SRDY0_P0 | + ESR_INT_DET0_P0 | + ESR_INT_XSRDY_P0 | + ESR_INT_XDP_P0_CH3 | + ESR_INT_XDP_P0_CH2 | + ESR_INT_XDP_P0_CH1 | + ESR_INT_XDP_P0_CH0); + break; + + case 1: + mask = ESR_INT_SIGNALS_P1_BITS; + val = (ESR_INT_SRDY0_P1 | + ESR_INT_DET0_P1 | + ESR_INT_XSRDY_P1 | + ESR_INT_XDP_P1_CH3 | + ESR_INT_XDP_P1_CH2 | + ESR_INT_XDP_P1_CH1 | + ESR_INT_XDP_P1_CH0); + break; + + default: + return -EINVAL; + } + + if ((sig & mask) != val) { + int err; + err = serdes_init_1g_serdes(np); + if (!err) { + np->flags &= ~NIU_FLAGS_10G; + np->mac_xcvr = MAC_XCVR_PCS; + } else { + netdev_err(np->dev, "Port %u 10G/1G SERDES Link Failed\n", + np->port); + return -ENODEV; + } + } + + return 0; +} + +static int niu_determine_phy_disposition(struct niu *np) +{ + struct niu_parent *parent = np->parent; + u8 plat_type = parent->plat_type; + const struct niu_phy_template *tp; + u32 phy_addr_off = 0; + + if (plat_type == PLAT_TYPE_NIU) { + switch (np->flags & + (NIU_FLAGS_10G | + NIU_FLAGS_FIBER | + NIU_FLAGS_XCVR_SERDES)) { + case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES: + /* 10G Serdes */ + tp = &phy_template_niu_10g_serdes; + break; + case NIU_FLAGS_XCVR_SERDES: + /* 1G Serdes */ + tp = &phy_template_niu_1g_serdes; + break; + case NIU_FLAGS_10G | NIU_FLAGS_FIBER: + /* 10G Fiber */ + default: + if (np->flags & NIU_FLAGS_HOTPLUG_PHY) { + tp = &phy_template_niu_10g_hotplug; + if (np->port == 0) + phy_addr_off = 8; + if (np->port == 1) + phy_addr_off = 12; + } else { + tp = &phy_template_niu_10g_fiber; + phy_addr_off += np->port; + } + break; + } + } else { + switch (np->flags & + (NIU_FLAGS_10G | + NIU_FLAGS_FIBER | + NIU_FLAGS_XCVR_SERDES)) { + case 0: + /* 1G copper */ + tp = &phy_template_1g_copper; + if (plat_type == PLAT_TYPE_VF_P0) + phy_addr_off = 10; + else if (plat_type == PLAT_TYPE_VF_P1) + phy_addr_off = 26; + + phy_addr_off += (np->port ^ 0x3); + break; + + case NIU_FLAGS_10G: + /* 10G copper */ + tp = &phy_template_10g_copper; + break; + + case NIU_FLAGS_FIBER: + /* 1G fiber */ + tp = &phy_template_1g_fiber; + break; + + case NIU_FLAGS_10G | NIU_FLAGS_FIBER: + /* 10G fiber */ + tp = &phy_template_10g_fiber; + if (plat_type == PLAT_TYPE_VF_P0 || + plat_type == PLAT_TYPE_VF_P1) + phy_addr_off = 8; + phy_addr_off += np->port; + if (np->flags & NIU_FLAGS_HOTPLUG_PHY) { + tp = &phy_template_10g_fiber_hotplug; + if (np->port == 0) + phy_addr_off = 8; + if (np->port == 1) + phy_addr_off = 12; + } + break; + + case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES: + case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER: + case NIU_FLAGS_XCVR_SERDES: + switch(np->port) { + case 0: + case 1: + tp = &phy_template_10g_serdes; + break; + case 2: + case 3: + tp = &phy_template_1g_rgmii; + break; + default: + return -EINVAL; + } + phy_addr_off = niu_atca_port_num[np->port]; + break; + + default: + return -EINVAL; + } + } + + np->phy_ops = tp->ops; + np->phy_addr = tp->phy_addr_base + phy_addr_off; + + return 0; +} + +static int niu_init_link(struct niu *np) +{ + struct niu_parent *parent = np->parent; + int err, ignore; + + if (parent->plat_type == PLAT_TYPE_NIU) { + err = niu_xcvr_init(np); + if (err) + return err; + msleep(200); + } + err = niu_serdes_init(np); + if (err && !(np->flags & NIU_FLAGS_HOTPLUG_PHY)) + return err; + msleep(200); + err = niu_xcvr_init(np); + if (!err || (np->flags & NIU_FLAGS_HOTPLUG_PHY)) + niu_link_status(np, &ignore); + return 0; +} + +static void niu_set_primary_mac(struct niu *np, unsigned char *addr) +{ + u16 reg0 = addr[4] << 8 | addr[5]; + u16 reg1 = addr[2] << 8 | addr[3]; + u16 reg2 = addr[0] << 8 | addr[1]; + + if (np->flags & NIU_FLAGS_XMAC) { + nw64_mac(XMAC_ADDR0, reg0); + nw64_mac(XMAC_ADDR1, reg1); + nw64_mac(XMAC_ADDR2, reg2); + } else { + nw64_mac(BMAC_ADDR0, reg0); + nw64_mac(BMAC_ADDR1, reg1); + nw64_mac(BMAC_ADDR2, reg2); + } +} + +static int niu_num_alt_addr(struct niu *np) +{ + if (np->flags & NIU_FLAGS_XMAC) + return XMAC_NUM_ALT_ADDR; + else + return BMAC_NUM_ALT_ADDR; +} + +static int niu_set_alt_mac(struct niu *np, int index, unsigned char *addr) +{ + u16 reg0 = addr[4] << 8 | addr[5]; + u16 reg1 = addr[2] << 8 | addr[3]; + u16 reg2 = addr[0] << 8 | addr[1]; + + if (index >= niu_num_alt_addr(np)) + return -EINVAL; + + if (np->flags & NIU_FLAGS_XMAC) { + nw64_mac(XMAC_ALT_ADDR0(index), reg0); + nw64_mac(XMAC_ALT_ADDR1(index), reg1); + nw64_mac(XMAC_ALT_ADDR2(index), reg2); + } else { + nw64_mac(BMAC_ALT_ADDR0(index), reg0); + nw64_mac(BMAC_ALT_ADDR1(index), reg1); + nw64_mac(BMAC_ALT_ADDR2(index), reg2); + } + + return 0; +} + +static int niu_enable_alt_mac(struct niu *np, int index, int on) +{ + unsigned long reg; + u64 val, mask; + + if (index >= niu_num_alt_addr(np)) + return -EINVAL; + + if (np->flags & NIU_FLAGS_XMAC) { + reg = XMAC_ADDR_CMPEN; + mask = 1 << index; + } else { + reg = BMAC_ADDR_CMPEN; + mask = 1 << (index + 1); + } + + val = nr64_mac(reg); + if (on) + val |= mask; + else + val &= ~mask; + nw64_mac(reg, val); + + return 0; +} + +static void __set_rdc_table_num_hw(struct niu *np, unsigned long reg, + int num, int mac_pref) +{ + u64 val = nr64_mac(reg); + val &= ~(HOST_INFO_MACRDCTBLN | HOST_INFO_MPR); + val |= num; + if (mac_pref) + val |= HOST_INFO_MPR; + nw64_mac(reg, val); +} + +static int __set_rdc_table_num(struct niu *np, + int xmac_index, int bmac_index, + int rdc_table_num, int mac_pref) +{ + unsigned long reg; + + if (rdc_table_num & ~HOST_INFO_MACRDCTBLN) + return -EINVAL; + if (np->flags & NIU_FLAGS_XMAC) + reg = XMAC_HOST_INFO(xmac_index); + else + reg = BMAC_HOST_INFO(bmac_index); + __set_rdc_table_num_hw(np, reg, rdc_table_num, mac_pref); + return 0; +} + +static int niu_set_primary_mac_rdc_table(struct niu *np, int table_num, + int mac_pref) +{ + return __set_rdc_table_num(np, 17, 0, table_num, mac_pref); +} + +static int niu_set_multicast_mac_rdc_table(struct niu *np, int table_num, + int mac_pref) +{ + return __set_rdc_table_num(np, 16, 8, table_num, mac_pref); +} + +static int niu_set_alt_mac_rdc_table(struct niu *np, int idx, + int table_num, int mac_pref) +{ + if (idx >= niu_num_alt_addr(np)) + return -EINVAL; + return __set_rdc_table_num(np, idx, idx + 1, table_num, mac_pref); +} + +static u64 vlan_entry_set_parity(u64 reg_val) +{ + u64 port01_mask; + u64 port23_mask; + + port01_mask = 0x00ff; + port23_mask = 0xff00; + + if (hweight64(reg_val & port01_mask) & 1) + reg_val |= ENET_VLAN_TBL_PARITY0; + else + reg_val &= ~ENET_VLAN_TBL_PARITY0; + + if (hweight64(reg_val & port23_mask) & 1) + reg_val |= ENET_VLAN_TBL_PARITY1; + else + reg_val &= ~ENET_VLAN_TBL_PARITY1; + + return reg_val; +} + +static void vlan_tbl_write(struct niu *np, unsigned long index, + int port, int vpr, int rdc_table) +{ + u64 reg_val = nr64(ENET_VLAN_TBL(index)); + + reg_val &= ~((ENET_VLAN_TBL_VPR | + ENET_VLAN_TBL_VLANRDCTBLN) << + ENET_VLAN_TBL_SHIFT(port)); + if (vpr) + reg_val |= (ENET_VLAN_TBL_VPR << + ENET_VLAN_TBL_SHIFT(port)); + reg_val |= (rdc_table << ENET_VLAN_TBL_SHIFT(port)); + + reg_val = vlan_entry_set_parity(reg_val); + + nw64(ENET_VLAN_TBL(index), reg_val); +} + +static void vlan_tbl_clear(struct niu *np) +{ + int i; + + for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++) + nw64(ENET_VLAN_TBL(i), 0); +} + +static int tcam_wait_bit(struct niu *np, u64 bit) +{ + int limit = 1000; + + while (--limit > 0) { + if (nr64(TCAM_CTL) & bit) + break; + udelay(1); + } + if (limit <= 0) + return -ENODEV; + + return 0; +} + +static int tcam_flush(struct niu *np, int index) +{ + nw64(TCAM_KEY_0, 0x00); + nw64(TCAM_KEY_MASK_0, 0xff); + nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index)); + + return tcam_wait_bit(np, TCAM_CTL_STAT); +} + +#if 0 +static int tcam_read(struct niu *np, int index, + u64 *key, u64 *mask) +{ + int err; + + nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_READ | index)); + err = tcam_wait_bit(np, TCAM_CTL_STAT); + if (!err) { + key[0] = nr64(TCAM_KEY_0); + key[1] = nr64(TCAM_KEY_1); + key[2] = nr64(TCAM_KEY_2); + key[3] = nr64(TCAM_KEY_3); + mask[0] = nr64(TCAM_KEY_MASK_0); + mask[1] = nr64(TCAM_KEY_MASK_1); + mask[2] = nr64(TCAM_KEY_MASK_2); + mask[3] = nr64(TCAM_KEY_MASK_3); + } + return err; +} +#endif + +static int tcam_write(struct niu *np, int index, + u64 *key, u64 *mask) +{ + nw64(TCAM_KEY_0, key[0]); + nw64(TCAM_KEY_1, key[1]); + nw64(TCAM_KEY_2, key[2]); + nw64(TCAM_KEY_3, key[3]); + nw64(TCAM_KEY_MASK_0, mask[0]); + nw64(TCAM_KEY_MASK_1, mask[1]); + nw64(TCAM_KEY_MASK_2, mask[2]); + nw64(TCAM_KEY_MASK_3, mask[3]); + nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index)); + + return tcam_wait_bit(np, TCAM_CTL_STAT); +} + +#if 0 +static int tcam_assoc_read(struct niu *np, int index, u64 *data) +{ + int err; + + nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_READ | index)); + err = tcam_wait_bit(np, TCAM_CTL_STAT); + if (!err) + *data = nr64(TCAM_KEY_1); + + return err; +} +#endif + +static int tcam_assoc_write(struct niu *np, int index, u64 assoc_data) +{ + nw64(TCAM_KEY_1, assoc_data); + nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_WRITE | index)); + + return tcam_wait_bit(np, TCAM_CTL_STAT); +} + +static void tcam_enable(struct niu *np, int on) +{ + u64 val = nr64(FFLP_CFG_1); + + if (on) + val &= ~FFLP_CFG_1_TCAM_DIS; + else + val |= FFLP_CFG_1_TCAM_DIS; + nw64(FFLP_CFG_1, val); +} + +static void tcam_set_lat_and_ratio(struct niu *np, u64 latency, u64 ratio) +{ + u64 val = nr64(FFLP_CFG_1); + + val &= ~(FFLP_CFG_1_FFLPINITDONE | + FFLP_CFG_1_CAMLAT | + FFLP_CFG_1_CAMRATIO); + val |= (latency << FFLP_CFG_1_CAMLAT_SHIFT); + val |= (ratio << FFLP_CFG_1_CAMRATIO_SHIFT); + nw64(FFLP_CFG_1, val); + + val = nr64(FFLP_CFG_1); + val |= FFLP_CFG_1_FFLPINITDONE; + nw64(FFLP_CFG_1, val); +} + +static int tcam_user_eth_class_enable(struct niu *np, unsigned long class, + int on) +{ + unsigned long reg; + u64 val; + + if (class < CLASS_CODE_ETHERTYPE1 || + class > CLASS_CODE_ETHERTYPE2) + return -EINVAL; + + reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1); + val = nr64(reg); + if (on) + val |= L2_CLS_VLD; + else + val &= ~L2_CLS_VLD; + nw64(reg, val); + + return 0; +} + +#if 0 +static int tcam_user_eth_class_set(struct niu *np, unsigned long class, + u64 ether_type) +{ + unsigned long reg; + u64 val; + + if (class < CLASS_CODE_ETHERTYPE1 || + class > CLASS_CODE_ETHERTYPE2 || + (ether_type & ~(u64)0xffff) != 0) + return -EINVAL; + + reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1); + val = nr64(reg); + val &= ~L2_CLS_ETYPE; + val |= (ether_type << L2_CLS_ETYPE_SHIFT); + nw64(reg, val); + + return 0; +} +#endif + +static int tcam_user_ip_class_enable(struct niu *np, unsigned long class, + int on) +{ + unsigned long reg; + u64 val; + + if (class < CLASS_CODE_USER_PROG1 || + class > CLASS_CODE_USER_PROG4) + return -EINVAL; + + reg = L3_CLS(class - CLASS_CODE_USER_PROG1); + val = nr64(reg); + if (on) + val |= L3_CLS_VALID; + else + val &= ~L3_CLS_VALID; + nw64(reg, val); + + return 0; +} + +static int tcam_user_ip_class_set(struct niu *np, unsigned long class, + int ipv6, u64 protocol_id, + u64 tos_mask, u64 tos_val) +{ + unsigned long reg; + u64 val; + + if (class < CLASS_CODE_USER_PROG1 || + class > CLASS_CODE_USER_PROG4 || + (protocol_id & ~(u64)0xff) != 0 || + (tos_mask & ~(u64)0xff) != 0 || + (tos_val & ~(u64)0xff) != 0) + return -EINVAL; + + reg = L3_CLS(class - CLASS_CODE_USER_PROG1); + val = nr64(reg); + val &= ~(L3_CLS_IPVER | L3_CLS_PID | + L3_CLS_TOSMASK | L3_CLS_TOS); + if (ipv6) + val |= L3_CLS_IPVER; + val |= (protocol_id << L3_CLS_PID_SHIFT); + val |= (tos_mask << L3_CLS_TOSMASK_SHIFT); + val |= (tos_val << L3_CLS_TOS_SHIFT); + nw64(reg, val); + + return 0; +} + +static int tcam_early_init(struct niu *np) +{ + unsigned long i; + int err; + + tcam_enable(np, 0); + tcam_set_lat_and_ratio(np, + DEFAULT_TCAM_LATENCY, + DEFAULT_TCAM_ACCESS_RATIO); + for (i = CLASS_CODE_ETHERTYPE1; i <= CLASS_CODE_ETHERTYPE2; i++) { + err = tcam_user_eth_class_enable(np, i, 0); + if (err) + return err; + } + for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_USER_PROG4; i++) { + err = tcam_user_ip_class_enable(np, i, 0); + if (err) + return err; + } + + return 0; +} + +static int tcam_flush_all(struct niu *np) +{ + unsigned long i; + + for (i = 0; i < np->parent->tcam_num_entries; i++) { + int err = tcam_flush(np, i); + if (err) + return err; + } + return 0; +} + +static u64 hash_addr_regval(unsigned long index, unsigned long num_entries) +{ + return (u64)index | (num_entries == 1 ? HASH_TBL_ADDR_AUTOINC : 0); +} + +#if 0 +static int hash_read(struct niu *np, unsigned long partition, + unsigned long index, unsigned long num_entries, + u64 *data) +{ + u64 val = hash_addr_regval(index, num_entries); + unsigned long i; + + if (partition >= FCRAM_NUM_PARTITIONS || + index + num_entries > FCRAM_SIZE) + return -EINVAL; + + nw64(HASH_TBL_ADDR(partition), val); + for (i = 0; i < num_entries; i++) + data[i] = nr64(HASH_TBL_DATA(partition)); + + return 0; +} +#endif + +static int hash_write(struct niu *np, unsigned long partition, + unsigned long index, unsigned long num_entries, + u64 *data) +{ + u64 val = hash_addr_regval(index, num_entries); + unsigned long i; + + if (partition >= FCRAM_NUM_PARTITIONS || + index + (num_entries * 8) > FCRAM_SIZE) + return -EINVAL; + + nw64(HASH_TBL_ADDR(partition), val); + for (i = 0; i < num_entries; i++) + nw64(HASH_TBL_DATA(partition), data[i]); + + return 0; +} + +static void fflp_reset(struct niu *np) +{ + u64 val; + + nw64(FFLP_CFG_1, FFLP_CFG_1_PIO_FIO_RST); + udelay(10); + nw64(FFLP_CFG_1, 0); + + val = FFLP_CFG_1_FCRAMOUTDR_NORMAL | FFLP_CFG_1_FFLPINITDONE; + nw64(FFLP_CFG_1, val); +} + +static void fflp_set_timings(struct niu *np) +{ + u64 val = nr64(FFLP_CFG_1); + + val &= ~FFLP_CFG_1_FFLPINITDONE; + val |= (DEFAULT_FCRAMRATIO << FFLP_CFG_1_FCRAMRATIO_SHIFT); + nw64(FFLP_CFG_1, val); + + val = nr64(FFLP_CFG_1); + val |= FFLP_CFG_1_FFLPINITDONE; + nw64(FFLP_CFG_1, val); + + val = nr64(FCRAM_REF_TMR); + val &= ~(FCRAM_REF_TMR_MAX | FCRAM_REF_TMR_MIN); + val |= (DEFAULT_FCRAM_REFRESH_MAX << FCRAM_REF_TMR_MAX_SHIFT); + val |= (DEFAULT_FCRAM_REFRESH_MIN << FCRAM_REF_TMR_MIN_SHIFT); + nw64(FCRAM_REF_TMR, val); +} + +static int fflp_set_partition(struct niu *np, u64 partition, + u64 mask, u64 base, int enable) +{ + unsigned long reg; + u64 val; + + if (partition >= FCRAM_NUM_PARTITIONS || + (mask & ~(u64)0x1f) != 0 || + (base & ~(u64)0x1f) != 0) + return -EINVAL; + + reg = FLW_PRT_SEL(partition); + + val = nr64(reg); + val &= ~(FLW_PRT_SEL_EXT | FLW_PRT_SEL_MASK | FLW_PRT_SEL_BASE); + val |= (mask << FLW_PRT_SEL_MASK_SHIFT); + val |= (base << FLW_PRT_SEL_BASE_SHIFT); + if (enable) + val |= FLW_PRT_SEL_EXT; + nw64(reg, val); + + return 0; +} + +static int fflp_disable_all_partitions(struct niu *np) +{ + unsigned long i; + + for (i = 0; i < FCRAM_NUM_PARTITIONS; i++) { + int err = fflp_set_partition(np, 0, 0, 0, 0); + if (err) + return err; + } + return 0; +} + +static void fflp_llcsnap_enable(struct niu *np, int on) +{ + u64 val = nr64(FFLP_CFG_1); + + if (on) + val |= FFLP_CFG_1_LLCSNAP; + else + val &= ~FFLP_CFG_1_LLCSNAP; + nw64(FFLP_CFG_1, val); +} + +static void fflp_errors_enable(struct niu *np, int on) +{ + u64 val = nr64(FFLP_CFG_1); + + if (on) + val &= ~FFLP_CFG_1_ERRORDIS; + else + val |= FFLP_CFG_1_ERRORDIS; + nw64(FFLP_CFG_1, val); +} + +static int fflp_hash_clear(struct niu *np) +{ + struct fcram_hash_ipv4 ent; + unsigned long i; + + /* IPV4 hash entry with valid bit clear, rest is don't care. */ + memset(&ent, 0, sizeof(ent)); + ent.header = HASH_HEADER_EXT; + + for (i = 0; i < FCRAM_SIZE; i += sizeof(ent)) { + int err = hash_write(np, 0, i, 1, (u64 *) &ent); + if (err) + return err; + } + return 0; +} + +static int fflp_early_init(struct niu *np) +{ + struct niu_parent *parent; + unsigned long flags; + int err; + + niu_lock_parent(np, flags); + + parent = np->parent; + err = 0; + if (!(parent->flags & PARENT_FLGS_CLS_HWINIT)) { + if (np->parent->plat_type != PLAT_TYPE_NIU) { + fflp_reset(np); + fflp_set_timings(np); + err = fflp_disable_all_partitions(np); + if (err) { + netif_printk(np, probe, KERN_DEBUG, np->dev, + "fflp_disable_all_partitions failed, err=%d\n", + err); + goto out; + } + } + + err = tcam_early_init(np); + if (err) { + netif_printk(np, probe, KERN_DEBUG, np->dev, + "tcam_early_init failed, err=%d\n", err); + goto out; + } + fflp_llcsnap_enable(np, 1); + fflp_errors_enable(np, 0); + nw64(H1POLY, 0); + nw64(H2POLY, 0); + + err = tcam_flush_all(np); + if (err) { + netif_printk(np, probe, KERN_DEBUG, np->dev, + "tcam_flush_all failed, err=%d\n", err); + goto out; + } + if (np->parent->plat_type != PLAT_TYPE_NIU) { + err = fflp_hash_clear(np); + if (err) { + netif_printk(np, probe, KERN_DEBUG, np->dev, + "fflp_hash_clear failed, err=%d\n", + err); + goto out; + } + } + + vlan_tbl_clear(np); + + parent->flags |= PARENT_FLGS_CLS_HWINIT; + } +out: + niu_unlock_parent(np, flags); + return err; +} + +static int niu_set_flow_key(struct niu *np, unsigned long class_code, u64 key) +{ + if (class_code < CLASS_CODE_USER_PROG1 || + class_code > CLASS_CODE_SCTP_IPV6) + return -EINVAL; + + nw64(FLOW_KEY(class_code - CLASS_CODE_USER_PROG1), key); + return 0; +} + +static int niu_set_tcam_key(struct niu *np, unsigned long class_code, u64 key) +{ + if (class_code < CLASS_CODE_USER_PROG1 || + class_code > CLASS_CODE_SCTP_IPV6) + return -EINVAL; + + nw64(TCAM_KEY(class_code - CLASS_CODE_USER_PROG1), key); + return 0; +} + +/* Entries for the ports are interleaved in the TCAM */ +static u16 tcam_get_index(struct niu *np, u16 idx) +{ + /* One entry reserved for IP fragment rule */ + if (idx >= (np->clas.tcam_sz - 1)) + idx = 0; + return np->clas.tcam_top + ((idx+1) * np->parent->num_ports); +} + +static u16 tcam_get_size(struct niu *np) +{ + /* One entry reserved for IP fragment rule */ + return np->clas.tcam_sz - 1; +} + +static u16 tcam_get_valid_entry_cnt(struct niu *np) +{ + /* One entry reserved for IP fragment rule */ + return np->clas.tcam_valid_entries - 1; +} + +static void niu_rx_skb_append(struct sk_buff *skb, struct page *page, + u32 offset, u32 size, u32 truesize) +{ + skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags, page, offset, size); + + skb->len += size; + skb->data_len += size; + skb->truesize += truesize; +} + +static unsigned int niu_hash_rxaddr(struct rx_ring_info *rp, u64 a) +{ + a >>= PAGE_SHIFT; + a ^= (a >> ilog2(MAX_RBR_RING_SIZE)); + + return a & (MAX_RBR_RING_SIZE - 1); +} + +static struct page *niu_find_rxpage(struct rx_ring_info *rp, u64 addr, + struct page ***link) +{ + unsigned int h = niu_hash_rxaddr(rp, addr); + struct page *p, **pp; + + addr &= PAGE_MASK; + pp = &rp->rxhash[h]; + for (; (p = *pp) != NULL; pp = (struct page **) &p->mapping) { + if (p->index == addr) { + *link = pp; + goto found; + } + } + BUG(); + +found: + return p; +} + +static void niu_hash_page(struct rx_ring_info *rp, struct page *page, u64 base) +{ + unsigned int h = niu_hash_rxaddr(rp, base); + + page->index = base; + page->mapping = (struct address_space *) rp->rxhash[h]; + rp->rxhash[h] = page; +} + +static int niu_rbr_add_page(struct niu *np, struct rx_ring_info *rp, + gfp_t mask, int start_index) +{ + struct page *page; + u64 addr; + int i; + + page = alloc_page(mask); + if (!page) + return -ENOMEM; + + addr = np->ops->map_page(np->device, page, 0, + PAGE_SIZE, DMA_FROM_DEVICE); + if (!addr) { + __free_page(page); + return -ENOMEM; + } + + niu_hash_page(rp, page, addr); + if (rp->rbr_blocks_per_page > 1) + atomic_add(rp->rbr_blocks_per_page - 1, &page->_count); + + for (i = 0; i < rp->rbr_blocks_per_page; i++) { + __le32 *rbr = &rp->rbr[start_index + i]; + + *rbr = cpu_to_le32(addr >> RBR_DESCR_ADDR_SHIFT); + addr += rp->rbr_block_size; + } + + return 0; +} + +static void niu_rbr_refill(struct niu *np, struct rx_ring_info *rp, gfp_t mask) +{ + int index = rp->rbr_index; + + rp->rbr_pending++; + if ((rp->rbr_pending % rp->rbr_blocks_per_page) == 0) { + int err = niu_rbr_add_page(np, rp, mask, index); + + if (unlikely(err)) { + rp->rbr_pending--; + return; + } + + rp->rbr_index += rp->rbr_blocks_per_page; + BUG_ON(rp->rbr_index > rp->rbr_table_size); + if (rp->rbr_index == rp->rbr_table_size) + rp->rbr_index = 0; + + if (rp->rbr_pending >= rp->rbr_kick_thresh) { + nw64(RBR_KICK(rp->rx_channel), rp->rbr_pending); + rp->rbr_pending = 0; + } + } +} + +static int niu_rx_pkt_ignore(struct niu *np, struct rx_ring_info *rp) +{ + unsigned int index = rp->rcr_index; + int num_rcr = 0; + + rp->rx_dropped++; + while (1) { + struct page *page, **link; + u64 addr, val; + u32 rcr_size; + + num_rcr++; + + val = le64_to_cpup(&rp->rcr[index]); + addr = (val & RCR_ENTRY_PKT_BUF_ADDR) << + RCR_ENTRY_PKT_BUF_ADDR_SHIFT; + page = niu_find_rxpage(rp, addr, &link); + + rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >> + RCR_ENTRY_PKTBUFSZ_SHIFT]; + if ((page->index + PAGE_SIZE) - rcr_size == addr) { + *link = (struct page *) page->mapping; + np->ops->unmap_page(np->device, page->index, + PAGE_SIZE, DMA_FROM_DEVICE); + page->index = 0; + page->mapping = NULL; + __free_page(page); + rp->rbr_refill_pending++; + } + + index = NEXT_RCR(rp, index); + if (!(val & RCR_ENTRY_MULTI)) + break; + + } + rp->rcr_index = index; + + return num_rcr; +} + +static int niu_process_rx_pkt(struct napi_struct *napi, struct niu *np, + struct rx_ring_info *rp) +{ + unsigned int index = rp->rcr_index; + struct rx_pkt_hdr1 *rh; + struct sk_buff *skb; + int len, num_rcr; + + skb = netdev_alloc_skb(np->dev, RX_SKB_ALLOC_SIZE); + if (unlikely(!skb)) + return niu_rx_pkt_ignore(np, rp); + + num_rcr = 0; + while (1) { + struct page *page, **link; + u32 rcr_size, append_size; + u64 addr, val, off; + + num_rcr++; + + val = le64_to_cpup(&rp->rcr[index]); + + len = (val & RCR_ENTRY_L2_LEN) >> + RCR_ENTRY_L2_LEN_SHIFT; + len -= ETH_FCS_LEN; + + addr = (val & RCR_ENTRY_PKT_BUF_ADDR) << + RCR_ENTRY_PKT_BUF_ADDR_SHIFT; + page = niu_find_rxpage(rp, addr, &link); + + rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >> + RCR_ENTRY_PKTBUFSZ_SHIFT]; + + off = addr & ~PAGE_MASK; + append_size = rcr_size; + if (num_rcr == 1) { + int ptype; + + ptype = (val >> RCR_ENTRY_PKT_TYPE_SHIFT); + if ((ptype == RCR_PKT_TYPE_TCP || + ptype == RCR_PKT_TYPE_UDP) && + !(val & (RCR_ENTRY_NOPORT | + RCR_ENTRY_ERROR))) + skb->ip_summed = CHECKSUM_UNNECESSARY; + else + skb_checksum_none_assert(skb); + } else if (!(val & RCR_ENTRY_MULTI)) + append_size = len - skb->len; + + niu_rx_skb_append(skb, page, off, append_size, rcr_size); + if ((page->index + rp->rbr_block_size) - rcr_size == addr) { + *link = (struct page *) page->mapping; + np->ops->unmap_page(np->device, page->index, + PAGE_SIZE, DMA_FROM_DEVICE); + page->index = 0; + page->mapping = NULL; + rp->rbr_refill_pending++; + } else + get_page(page); + + index = NEXT_RCR(rp, index); + if (!(val & RCR_ENTRY_MULTI)) + break; + + } + rp->rcr_index = index; + + len += sizeof(*rh); + len = min_t(int, len, sizeof(*rh) + VLAN_ETH_HLEN); + __pskb_pull_tail(skb, len); + + rh = (struct rx_pkt_hdr1 *) skb->data; + if (np->dev->features & NETIF_F_RXHASH) + skb_set_hash(skb, + ((u32)rh->hashval2_0 << 24 | + (u32)rh->hashval2_1 << 16 | + (u32)rh->hashval1_1 << 8 | + (u32)rh->hashval1_2 << 0), + PKT_HASH_TYPE_L3); + skb_pull(skb, sizeof(*rh)); + + rp->rx_packets++; + rp->rx_bytes += skb->len; + + skb->protocol = eth_type_trans(skb, np->dev); + skb_record_rx_queue(skb, rp->rx_channel); + napi_gro_receive(napi, skb); + + return num_rcr; +} + +static int niu_rbr_fill(struct niu *np, struct rx_ring_info *rp, gfp_t mask) +{ + int blocks_per_page = rp->rbr_blocks_per_page; + int err, index = rp->rbr_index; + + err = 0; + while (index < (rp->rbr_table_size - blocks_per_page)) { + err = niu_rbr_add_page(np, rp, mask, index); + if (unlikely(err)) + break; + + index += blocks_per_page; + } + + rp->rbr_index = index; + return err; +} + +static void niu_rbr_free(struct niu *np, struct rx_ring_info *rp) +{ + int i; + + for (i = 0; i < MAX_RBR_RING_SIZE; i++) { + struct page *page; + + page = rp->rxhash[i]; + while (page) { + struct page *next = (struct page *) page->mapping; + u64 base = page->index; + + np->ops->unmap_page(np->device, base, PAGE_SIZE, + DMA_FROM_DEVICE); + page->index = 0; + page->mapping = NULL; + + __free_page(page); + + page = next; + } + } + + for (i = 0; i < rp->rbr_table_size; i++) + rp->rbr[i] = cpu_to_le32(0); + rp->rbr_index = 0; +} + +static int release_tx_packet(struct niu *np, struct tx_ring_info *rp, int idx) +{ + struct tx_buff_info *tb = &rp->tx_buffs[idx]; + struct sk_buff *skb = tb->skb; + struct tx_pkt_hdr *tp; + u64 tx_flags; + int i, len; + + tp = (struct tx_pkt_hdr *) skb->data; + tx_flags = le64_to_cpup(&tp->flags); + + rp->tx_packets++; + rp->tx_bytes += (((tx_flags & TXHDR_LEN) >> TXHDR_LEN_SHIFT) - + ((tx_flags & TXHDR_PAD) / 2)); + + len = skb_headlen(skb); + np->ops->unmap_single(np->device, tb->mapping, + len, DMA_TO_DEVICE); + + if (le64_to_cpu(rp->descr[idx]) & TX_DESC_MARK) + rp->mark_pending--; + + tb->skb = NULL; + do { + idx = NEXT_TX(rp, idx); + len -= MAX_TX_DESC_LEN; + } while (len > 0); + + for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { + tb = &rp->tx_buffs[idx]; + BUG_ON(tb->skb != NULL); + np->ops->unmap_page(np->device, tb->mapping, + skb_frag_size(&skb_shinfo(skb)->frags[i]), + DMA_TO_DEVICE); + idx = NEXT_TX(rp, idx); + } + + dev_kfree_skb(skb); + + return idx; +} + +#define NIU_TX_WAKEUP_THRESH(rp) ((rp)->pending / 4) + +static void niu_tx_work(struct niu *np, struct tx_ring_info *rp) +{ + struct netdev_queue *txq; + u16 pkt_cnt, tmp; + int cons, index; + u64 cs; + + index = (rp - np->tx_rings); + txq = netdev_get_tx_queue(np->dev, index); + + cs = rp->tx_cs; + if (unlikely(!(cs & (TX_CS_MK | TX_CS_MMK)))) + goto out; + + tmp = pkt_cnt = (cs & TX_CS_PKT_CNT) >> TX_CS_PKT_CNT_SHIFT; + pkt_cnt = (pkt_cnt - rp->last_pkt_cnt) & + (TX_CS_PKT_CNT >> TX_CS_PKT_CNT_SHIFT); + + rp->last_pkt_cnt = tmp; + + cons = rp->cons; + + netif_printk(np, tx_done, KERN_DEBUG, np->dev, + "%s() pkt_cnt[%u] cons[%d]\n", __func__, pkt_cnt, cons); + + while (pkt_cnt--) + cons = release_tx_packet(np, rp, cons); + + rp->cons = cons; + smp_mb(); + +out: + if (unlikely(netif_tx_queue_stopped(txq) && + (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))) { + __netif_tx_lock(txq, smp_processor_id()); + if (netif_tx_queue_stopped(txq) && + (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp))) + netif_tx_wake_queue(txq); + __netif_tx_unlock(txq); + } +} + +static inline void niu_sync_rx_discard_stats(struct niu *np, + struct rx_ring_info *rp, + const int limit) +{ + /* This elaborate scheme is needed for reading the RX discard + * counters, as they are only 16-bit and can overflow quickly, + * and because the overflow indication bit is not usable as + * the counter value does not wrap, but remains at max value + * 0xFFFF. + * + * In theory and in practice counters can be lost in between + * reading nr64() and clearing the counter nw64(). For this + * reason, the number of counter clearings nw64() is + * limited/reduced though the limit parameter. + */ + int rx_channel = rp->rx_channel; + u32 misc, wred; + + /* RXMISC (Receive Miscellaneous Discard Count), covers the + * following discard events: IPP (Input Port Process), + * FFLP/TCAM, Full RCR (Receive Completion Ring) RBR (Receive + * Block Ring) prefetch buffer is empty. + */ + misc = nr64(RXMISC(rx_channel)); + if (unlikely((misc & RXMISC_COUNT) > limit)) { + nw64(RXMISC(rx_channel), 0); + rp->rx_errors += misc & RXMISC_COUNT; + + if (unlikely(misc & RXMISC_OFLOW)) + dev_err(np->device, "rx-%d: Counter overflow RXMISC discard\n", + rx_channel); + + netif_printk(np, rx_err, KERN_DEBUG, np->dev, + "rx-%d: MISC drop=%u over=%u\n", + rx_channel, misc, misc-limit); + } + + /* WRED (Weighted Random Early Discard) by hardware */ + wred = nr64(RED_DIS_CNT(rx_channel)); + if (unlikely((wred & RED_DIS_CNT_COUNT) > limit)) { + nw64(RED_DIS_CNT(rx_channel), 0); + rp->rx_dropped += wred & RED_DIS_CNT_COUNT; + + if (unlikely(wred & RED_DIS_CNT_OFLOW)) + dev_err(np->device, "rx-%d: Counter overflow WRED discard\n", rx_channel); + + netif_printk(np, rx_err, KERN_DEBUG, np->dev, + "rx-%d: WRED drop=%u over=%u\n", + rx_channel, wred, wred-limit); + } +} + +static int niu_rx_work(struct napi_struct *napi, struct niu *np, + struct rx_ring_info *rp, int budget) +{ + int qlen, rcr_done = 0, work_done = 0; + struct rxdma_mailbox *mbox = rp->mbox; + u64 stat; + +#if 1 + stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel)); + qlen = nr64(RCRSTAT_A(rp->rx_channel)) & RCRSTAT_A_QLEN; +#else + stat = le64_to_cpup(&mbox->rx_dma_ctl_stat); + qlen = (le64_to_cpup(&mbox->rcrstat_a) & RCRSTAT_A_QLEN); +#endif + mbox->rx_dma_ctl_stat = 0; + mbox->rcrstat_a = 0; + + netif_printk(np, rx_status, KERN_DEBUG, np->dev, + "%s(chan[%d]), stat[%llx] qlen=%d\n", + __func__, rp->rx_channel, (unsigned long long)stat, qlen); + + rcr_done = work_done = 0; + qlen = min(qlen, budget); + while (work_done < qlen) { + rcr_done += niu_process_rx_pkt(napi, np, rp); + work_done++; + } + + if (rp->rbr_refill_pending >= rp->rbr_kick_thresh) { + unsigned int i; + + for (i = 0; i < rp->rbr_refill_pending; i++) + niu_rbr_refill(np, rp, GFP_ATOMIC); + rp->rbr_refill_pending = 0; + } + + stat = (RX_DMA_CTL_STAT_MEX | + ((u64)work_done << RX_DMA_CTL_STAT_PKTREAD_SHIFT) | + ((u64)rcr_done << RX_DMA_CTL_STAT_PTRREAD_SHIFT)); + + nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat); + + /* Only sync discards stats when qlen indicate potential for drops */ + if (qlen > 10) + niu_sync_rx_discard_stats(np, rp, 0x7FFF); + + return work_done; +} + +static int niu_poll_core(struct niu *np, struct niu_ldg *lp, int budget) +{ + u64 v0 = lp->v0; + u32 tx_vec = (v0 >> 32); + u32 rx_vec = (v0 & 0xffffffff); + int i, work_done = 0; + + netif_printk(np, intr, KERN_DEBUG, np->dev, + "%s() v0[%016llx]\n", __func__, (unsigned long long)v0); + + for (i = 0; i < np->num_tx_rings; i++) { + struct tx_ring_info *rp = &np->tx_rings[i]; + if (tx_vec & (1 << rp->tx_channel)) + niu_tx_work(np, rp); + nw64(LD_IM0(LDN_TXDMA(rp->tx_channel)), 0); + } + + for (i = 0; i < np->num_rx_rings; i++) { + struct rx_ring_info *rp = &np->rx_rings[i]; + + if (rx_vec & (1 << rp->rx_channel)) { + int this_work_done; + + this_work_done = niu_rx_work(&lp->napi, np, rp, + budget); + + budget -= this_work_done; + work_done += this_work_done; + } + nw64(LD_IM0(LDN_RXDMA(rp->rx_channel)), 0); + } + + return work_done; +} + +static int niu_poll(struct napi_struct *napi, int budget) +{ + struct niu_ldg *lp = container_of(napi, struct niu_ldg, napi); + struct niu *np = lp->np; + int work_done; + + work_done = niu_poll_core(np, lp, budget); + + if (work_done < budget) { + napi_complete(napi); + niu_ldg_rearm(np, lp, 1); + } + return work_done; +} + +static void niu_log_rxchan_errors(struct niu *np, struct rx_ring_info *rp, + u64 stat) +{ + netdev_err(np->dev, "RX channel %u errors ( ", rp->rx_channel); + + if (stat & RX_DMA_CTL_STAT_RBR_TMOUT) + pr_cont("RBR_TMOUT "); + if (stat & RX_DMA_CTL_STAT_RSP_CNT_ERR) + pr_cont("RSP_CNT "); + if (stat & RX_DMA_CTL_STAT_BYTE_EN_BUS) + pr_cont("BYTE_EN_BUS "); + if (stat & RX_DMA_CTL_STAT_RSP_DAT_ERR) + pr_cont("RSP_DAT "); + if (stat & RX_DMA_CTL_STAT_RCR_ACK_ERR) + pr_cont("RCR_ACK "); + if (stat & RX_DMA_CTL_STAT_RCR_SHA_PAR) + pr_cont("RCR_SHA_PAR "); + if (stat & RX_DMA_CTL_STAT_RBR_PRE_PAR) + pr_cont("RBR_PRE_PAR "); + if (stat & RX_DMA_CTL_STAT_CONFIG_ERR) + pr_cont("CONFIG "); + if (stat & RX_DMA_CTL_STAT_RCRINCON) + pr_cont("RCRINCON "); + if (stat & RX_DMA_CTL_STAT_RCRFULL) + pr_cont("RCRFULL "); + if (stat & RX_DMA_CTL_STAT_RBRFULL) + pr_cont("RBRFULL "); + if (stat & RX_DMA_CTL_STAT_RBRLOGPAGE) + pr_cont("RBRLOGPAGE "); + if (stat & RX_DMA_CTL_STAT_CFIGLOGPAGE) + pr_cont("CFIGLOGPAGE "); + if (stat & RX_DMA_CTL_STAT_DC_FIFO_ERR) + pr_cont("DC_FIDO "); + + pr_cont(")\n"); +} + +static int niu_rx_error(struct niu *np, struct rx_ring_info *rp) +{ + u64 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel)); + int err = 0; + + + if (stat & (RX_DMA_CTL_STAT_CHAN_FATAL | + RX_DMA_CTL_STAT_PORT_FATAL)) + err = -EINVAL; + + if (err) { + netdev_err(np->dev, "RX channel %u error, stat[%llx]\n", + rp->rx_channel, + (unsigned long long) stat); + + niu_log_rxchan_errors(np, rp, stat); + } + + nw64(RX_DMA_CTL_STAT(rp->rx_channel), + stat & RX_DMA_CTL_WRITE_CLEAR_ERRS); + + return err; +} + +static void niu_log_txchan_errors(struct niu *np, struct tx_ring_info *rp, + u64 cs) +{ + netdev_err(np->dev, "TX channel %u errors ( ", rp->tx_channel); + + if (cs & TX_CS_MBOX_ERR) + pr_cont("MBOX "); + if (cs & TX_CS_PKT_SIZE_ERR) + pr_cont("PKT_SIZE "); + if (cs & TX_CS_TX_RING_OFLOW) + pr_cont("TX_RING_OFLOW "); + if (cs & TX_CS_PREF_BUF_PAR_ERR) + pr_cont("PREF_BUF_PAR "); + if (cs & TX_CS_NACK_PREF) + pr_cont("NACK_PREF "); + if (cs & TX_CS_NACK_PKT_RD) + pr_cont("NACK_PKT_RD "); + if (cs & TX_CS_CONF_PART_ERR) + pr_cont("CONF_PART "); + if (cs & TX_CS_PKT_PRT_ERR) + pr_cont("PKT_PTR "); + + pr_cont(")\n"); +} + +static int niu_tx_error(struct niu *np, struct tx_ring_info *rp) +{ + u64 cs, logh, logl; + + cs = nr64(TX_CS(rp->tx_channel)); + logh = nr64(TX_RNG_ERR_LOGH(rp->tx_channel)); + logl = nr64(TX_RNG_ERR_LOGL(rp->tx_channel)); + + netdev_err(np->dev, "TX channel %u error, cs[%llx] logh[%llx] logl[%llx]\n", + rp->tx_channel, + (unsigned long long)cs, + (unsigned long long)logh, + (unsigned long long)logl); + + niu_log_txchan_errors(np, rp, cs); + + return -ENODEV; +} + +static int niu_mif_interrupt(struct niu *np) +{ + u64 mif_status = nr64(MIF_STATUS); + int phy_mdint = 0; + + if (np->flags & NIU_FLAGS_XMAC) { + u64 xrxmac_stat = nr64_mac(XRXMAC_STATUS); + + if (xrxmac_stat & XRXMAC_STATUS_PHY_MDINT) + phy_mdint = 1; + } + + netdev_err(np->dev, "MIF interrupt, stat[%llx] phy_mdint(%d)\n", + (unsigned long long)mif_status, phy_mdint); + + return -ENODEV; +} + +static void niu_xmac_interrupt(struct niu *np) +{ + struct niu_xmac_stats *mp = &np->mac_stats.xmac; + u64 val; + + val = nr64_mac(XTXMAC_STATUS); + if (val & XTXMAC_STATUS_FRAME_CNT_EXP) + mp->tx_frames += TXMAC_FRM_CNT_COUNT; + if (val & XTXMAC_STATUS_BYTE_CNT_EXP) + mp->tx_bytes += TXMAC_BYTE_CNT_COUNT; + if (val & XTXMAC_STATUS_TXFIFO_XFR_ERR) + mp->tx_fifo_errors++; + if (val & XTXMAC_STATUS_TXMAC_OFLOW) + mp->tx_overflow_errors++; + if (val & XTXMAC_STATUS_MAX_PSIZE_ERR) + mp->tx_max_pkt_size_errors++; + if (val & XTXMAC_STATUS_TXMAC_UFLOW) + mp->tx_underflow_errors++; + + val = nr64_mac(XRXMAC_STATUS); + if (val & XRXMAC_STATUS_LCL_FLT_STATUS) + mp->rx_local_faults++; + if (val & XRXMAC_STATUS_RFLT_DET) + mp->rx_remote_faults++; + if (val & XRXMAC_STATUS_LFLT_CNT_EXP) + mp->rx_link_faults += LINK_FAULT_CNT_COUNT; + if (val & XRXMAC_STATUS_ALIGNERR_CNT_EXP) + mp->rx_align_errors += RXMAC_ALIGN_ERR_CNT_COUNT; + if (val & XRXMAC_STATUS_RXFRAG_CNT_EXP) + mp->rx_frags += RXMAC_FRAG_CNT_COUNT; + if (val & XRXMAC_STATUS_RXMULTF_CNT_EXP) + mp->rx_mcasts += RXMAC_MC_FRM_CNT_COUNT; + if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP) + mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT; + if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP) + mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT; + if (val & XRXMAC_STATUS_RXHIST1_CNT_EXP) + mp->rx_hist_cnt1 += RXMAC_HIST_CNT1_COUNT; + if (val & XRXMAC_STATUS_RXHIST2_CNT_EXP) + mp->rx_hist_cnt2 += RXMAC_HIST_CNT2_COUNT; + if (val & XRXMAC_STATUS_RXHIST3_CNT_EXP) + mp->rx_hist_cnt3 += RXMAC_HIST_CNT3_COUNT; + if (val & XRXMAC_STATUS_RXHIST4_CNT_EXP) + mp->rx_hist_cnt4 += RXMAC_HIST_CNT4_COUNT; + if (val & XRXMAC_STATUS_RXHIST5_CNT_EXP) + mp->rx_hist_cnt5 += RXMAC_HIST_CNT5_COUNT; + if (val & XRXMAC_STATUS_RXHIST6_CNT_EXP) + mp->rx_hist_cnt6 += RXMAC_HIST_CNT6_COUNT; + if (val & XRXMAC_STATUS_RXHIST7_CNT_EXP) + mp->rx_hist_cnt7 += RXMAC_HIST_CNT7_COUNT; + if (val & XRXMAC_STATUS_RXOCTET_CNT_EXP) + mp->rx_octets += RXMAC_BT_CNT_COUNT; + if (val & XRXMAC_STATUS_CVIOLERR_CNT_EXP) + mp->rx_code_violations += RXMAC_CD_VIO_CNT_COUNT; + if (val & XRXMAC_STATUS_LENERR_CNT_EXP) + mp->rx_len_errors += RXMAC_MPSZER_CNT_COUNT; + if (val & XRXMAC_STATUS_CRCERR_CNT_EXP) + mp->rx_crc_errors += RXMAC_CRC_ER_CNT_COUNT; + if (val & XRXMAC_STATUS_RXUFLOW) + mp->rx_underflows++; + if (val & XRXMAC_STATUS_RXOFLOW) + mp->rx_overflows++; + + val = nr64_mac(XMAC_FC_STAT); + if (val & XMAC_FC_STAT_TX_MAC_NPAUSE) + mp->pause_off_state++; + if (val & XMAC_FC_STAT_TX_MAC_PAUSE) + mp->pause_on_state++; + if (val & XMAC_FC_STAT_RX_MAC_RPAUSE) + mp->pause_received++; +} + +static void niu_bmac_interrupt(struct niu *np) +{ + struct niu_bmac_stats *mp = &np->mac_stats.bmac; + u64 val; + + val = nr64_mac(BTXMAC_STATUS); + if (val & BTXMAC_STATUS_UNDERRUN) + mp->tx_underflow_errors++; + if (val & BTXMAC_STATUS_MAX_PKT_ERR) + mp->tx_max_pkt_size_errors++; + if (val & BTXMAC_STATUS_BYTE_CNT_EXP) + mp->tx_bytes += BTXMAC_BYTE_CNT_COUNT; + if (val & BTXMAC_STATUS_FRAME_CNT_EXP) + mp->tx_frames += BTXMAC_FRM_CNT_COUNT; + + val = nr64_mac(BRXMAC_STATUS); + if (val & BRXMAC_STATUS_OVERFLOW) + mp->rx_overflows++; + if (val & BRXMAC_STATUS_FRAME_CNT_EXP) + mp->rx_frames += BRXMAC_FRAME_CNT_COUNT; + if (val & BRXMAC_STATUS_ALIGN_ERR_EXP) + mp->rx_align_errors += BRXMAC_ALIGN_ERR_CNT_COUNT; + if (val & BRXMAC_STATUS_CRC_ERR_EXP) + mp->rx_crc_errors += BRXMAC_ALIGN_ERR_CNT_COUNT; + if (val & BRXMAC_STATUS_LEN_ERR_EXP) + mp->rx_len_errors += BRXMAC_CODE_VIOL_ERR_CNT_COUNT; + + val = nr64_mac(BMAC_CTRL_STATUS); + if (val & BMAC_CTRL_STATUS_NOPAUSE) + mp->pause_off_state++; + if (val & BMAC_CTRL_STATUS_PAUSE) + mp->pause_on_state++; + if (val & BMAC_CTRL_STATUS_PAUSE_RECV) + mp->pause_received++; +} + +static int niu_mac_interrupt(struct niu *np) +{ + if (np->flags & NIU_FLAGS_XMAC) + niu_xmac_interrupt(np); + else + niu_bmac_interrupt(np); + + return 0; +} + +static void niu_log_device_error(struct niu *np, u64 stat) +{ + netdev_err(np->dev, "Core device errors ( "); + + if (stat & SYS_ERR_MASK_META2) + pr_cont("META2 "); + if (stat & SYS_ERR_MASK_META1) + pr_cont("META1 "); + if (stat & SYS_ERR_MASK_PEU) + pr_cont("PEU "); + if (stat & SYS_ERR_MASK_TXC) + pr_cont("TXC "); + if (stat & SYS_ERR_MASK_RDMC) + pr_cont("RDMC "); + if (stat & SYS_ERR_MASK_TDMC) + pr_cont("TDMC "); + if (stat & SYS_ERR_MASK_ZCP) + pr_cont("ZCP "); + if (stat & SYS_ERR_MASK_FFLP) + pr_cont("FFLP "); + if (stat & SYS_ERR_MASK_IPP) + pr_cont("IPP "); + if (stat & SYS_ERR_MASK_MAC) + pr_cont("MAC "); + if (stat & SYS_ERR_MASK_SMX) + pr_cont("SMX "); + + pr_cont(")\n"); +} + +static int niu_device_error(struct niu *np) +{ + u64 stat = nr64(SYS_ERR_STAT); + + netdev_err(np->dev, "Core device error, stat[%llx]\n", + (unsigned long long)stat); + + niu_log_device_error(np, stat); + + return -ENODEV; +} + +static int niu_slowpath_interrupt(struct niu *np, struct niu_ldg *lp, + u64 v0, u64 v1, u64 v2) +{ + + int i, err = 0; + + lp->v0 = v0; + lp->v1 = v1; + lp->v2 = v2; + + if (v1 & 0x00000000ffffffffULL) { + u32 rx_vec = (v1 & 0xffffffff); + + for (i = 0; i < np->num_rx_rings; i++) { + struct rx_ring_info *rp = &np->rx_rings[i]; + + if (rx_vec & (1 << rp->rx_channel)) { + int r = niu_rx_error(np, rp); + if (r) { + err = r; + } else { + if (!v0) + nw64(RX_DMA_CTL_STAT(rp->rx_channel), + RX_DMA_CTL_STAT_MEX); + } + } + } + } + if (v1 & 0x7fffffff00000000ULL) { + u32 tx_vec = (v1 >> 32) & 0x7fffffff; + + for (i = 0; i < np->num_tx_rings; i++) { + struct tx_ring_info *rp = &np->tx_rings[i]; + + if (tx_vec & (1 << rp->tx_channel)) { + int r = niu_tx_error(np, rp); + if (r) + err = r; + } + } + } + if ((v0 | v1) & 0x8000000000000000ULL) { + int r = niu_mif_interrupt(np); + if (r) + err = r; + } + if (v2) { + if (v2 & 0x01ef) { + int r = niu_mac_interrupt(np); + if (r) + err = r; + } + if (v2 & 0x0210) { + int r = niu_device_error(np); + if (r) + err = r; + } + } + + if (err) + niu_enable_interrupts(np, 0); + + return err; +} + +static void niu_rxchan_intr(struct niu *np, struct rx_ring_info *rp, + int ldn) +{ + struct rxdma_mailbox *mbox = rp->mbox; + u64 stat_write, stat = le64_to_cpup(&mbox->rx_dma_ctl_stat); + + stat_write = (RX_DMA_CTL_STAT_RCRTHRES | + RX_DMA_CTL_STAT_RCRTO); + nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat_write); + + netif_printk(np, intr, KERN_DEBUG, np->dev, + "%s() stat[%llx]\n", __func__, (unsigned long long)stat); +} + +static void niu_txchan_intr(struct niu *np, struct tx_ring_info *rp, + int ldn) +{ + rp->tx_cs = nr64(TX_CS(rp->tx_channel)); + + netif_printk(np, intr, KERN_DEBUG, np->dev, + "%s() cs[%llx]\n", __func__, (unsigned long long)rp->tx_cs); +} + +static void __niu_fastpath_interrupt(struct niu *np, int ldg, u64 v0) +{ + struct niu_parent *parent = np->parent; + u32 rx_vec, tx_vec; + int i; + + tx_vec = (v0 >> 32); + rx_vec = (v0 & 0xffffffff); + + for (i = 0; i < np->num_rx_rings; i++) { + struct rx_ring_info *rp = &np->rx_rings[i]; + int ldn = LDN_RXDMA(rp->rx_channel); + + if (parent->ldg_map[ldn] != ldg) + continue; + + nw64(LD_IM0(ldn), LD_IM0_MASK); + if (rx_vec & (1 << rp->rx_channel)) + niu_rxchan_intr(np, rp, ldn); + } + + for (i = 0; i < np->num_tx_rings; i++) { + struct tx_ring_info *rp = &np->tx_rings[i]; + int ldn = LDN_TXDMA(rp->tx_channel); + + if (parent->ldg_map[ldn] != ldg) + continue; + + nw64(LD_IM0(ldn), LD_IM0_MASK); + if (tx_vec & (1 << rp->tx_channel)) + niu_txchan_intr(np, rp, ldn); + } +} + +static void niu_schedule_napi(struct niu *np, struct niu_ldg *lp, + u64 v0, u64 v1, u64 v2) +{ + if (likely(napi_schedule_prep(&lp->napi))) { + lp->v0 = v0; + lp->v1 = v1; + lp->v2 = v2; + __niu_fastpath_interrupt(np, lp->ldg_num, v0); + __napi_schedule(&lp->napi); + } +} + +static irqreturn_t niu_interrupt(int irq, void *dev_id) +{ + struct niu_ldg *lp = dev_id; + struct niu *np = lp->np; + int ldg = lp->ldg_num; + unsigned long flags; + u64 v0, v1, v2; + + if (netif_msg_intr(np)) + printk(KERN_DEBUG KBUILD_MODNAME ": " "%s() ldg[%p](%d)", + __func__, lp, ldg); + + spin_lock_irqsave(&np->lock, flags); + + v0 = nr64(LDSV0(ldg)); + v1 = nr64(LDSV1(ldg)); + v2 = nr64(LDSV2(ldg)); + + if (netif_msg_intr(np)) + pr_cont(" v0[%llx] v1[%llx] v2[%llx]\n", + (unsigned long long) v0, + (unsigned long long) v1, + (unsigned long long) v2); + + if (unlikely(!v0 && !v1 && !v2)) { + spin_unlock_irqrestore(&np->lock, flags); + return IRQ_NONE; + } + + if (unlikely((v0 & ((u64)1 << LDN_MIF)) || v1 || v2)) { + int err = niu_slowpath_interrupt(np, lp, v0, v1, v2); + if (err) + goto out; + } + if (likely(v0 & ~((u64)1 << LDN_MIF))) + niu_schedule_napi(np, lp, v0, v1, v2); + else + niu_ldg_rearm(np, lp, 1); +out: + spin_unlock_irqrestore(&np->lock, flags); + + return IRQ_HANDLED; +} + +static void niu_free_rx_ring_info(struct niu *np, struct rx_ring_info *rp) +{ + if (rp->mbox) { + np->ops->free_coherent(np->device, + sizeof(struct rxdma_mailbox), + rp->mbox, rp->mbox_dma); + rp->mbox = NULL; + } + if (rp->rcr) { + np->ops->free_coherent(np->device, + MAX_RCR_RING_SIZE * sizeof(__le64), + rp->rcr, rp->rcr_dma); + rp->rcr = NULL; + rp->rcr_table_size = 0; + rp->rcr_index = 0; + } + if (rp->rbr) { + niu_rbr_free(np, rp); + + np->ops->free_coherent(np->device, + MAX_RBR_RING_SIZE * sizeof(__le32), + rp->rbr, rp->rbr_dma); + rp->rbr = NULL; + rp->rbr_table_size = 0; + rp->rbr_index = 0; + } + kfree(rp->rxhash); + rp->rxhash = NULL; +} + +static void niu_free_tx_ring_info(struct niu *np, struct tx_ring_info *rp) +{ + if (rp->mbox) { + np->ops->free_coherent(np->device, + sizeof(struct txdma_mailbox), + rp->mbox, rp->mbox_dma); + rp->mbox = NULL; + } + if (rp->descr) { + int i; + + for (i = 0; i < MAX_TX_RING_SIZE; i++) { + if (rp->tx_buffs[i].skb) + (void) release_tx_packet(np, rp, i); + } + + np->ops->free_coherent(np->device, + MAX_TX_RING_SIZE * sizeof(__le64), + rp->descr, rp->descr_dma); + rp->descr = NULL; + rp->pending = 0; + rp->prod = 0; + rp->cons = 0; + rp->wrap_bit = 0; + } +} + +static void niu_free_channels(struct niu *np) +{ + int i; + + if (np->rx_rings) { + for (i = 0; i < np->num_rx_rings; i++) { + struct rx_ring_info *rp = &np->rx_rings[i]; + + niu_free_rx_ring_info(np, rp); + } + kfree(np->rx_rings); + np->rx_rings = NULL; + np->num_rx_rings = 0; + } + + if (np->tx_rings) { + for (i = 0; i < np->num_tx_rings; i++) { + struct tx_ring_info *rp = &np->tx_rings[i]; + + niu_free_tx_ring_info(np, rp); + } + kfree(np->tx_rings); + np->tx_rings = NULL; + np->num_tx_rings = 0; + } +} + +static int niu_alloc_rx_ring_info(struct niu *np, + struct rx_ring_info *rp) +{ + BUILD_BUG_ON(sizeof(struct rxdma_mailbox) != 64); + + rp->rxhash = kcalloc(MAX_RBR_RING_SIZE, sizeof(struct page *), + GFP_KERNEL); + if (!rp->rxhash) + return -ENOMEM; + + rp->mbox = np->ops->alloc_coherent(np->device, + sizeof(struct rxdma_mailbox), + &rp->mbox_dma, GFP_KERNEL); + if (!rp->mbox) + return -ENOMEM; + if ((unsigned long)rp->mbox & (64UL - 1)) { + netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA mailbox %p\n", + rp->mbox); + return -EINVAL; + } + + rp->rcr = np->ops->alloc_coherent(np->device, + MAX_RCR_RING_SIZE * sizeof(__le64), + &rp->rcr_dma, GFP_KERNEL); + if (!rp->rcr) + return -ENOMEM; + if ((unsigned long)rp->rcr & (64UL - 1)) { + netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA RCR table %p\n", + rp->rcr); + return -EINVAL; + } + rp->rcr_table_size = MAX_RCR_RING_SIZE; + rp->rcr_index = 0; + + rp->rbr = np->ops->alloc_coherent(np->device, + MAX_RBR_RING_SIZE * sizeof(__le32), + &rp->rbr_dma, GFP_KERNEL); + if (!rp->rbr) + return -ENOMEM; + if ((unsigned long)rp->rbr & (64UL - 1)) { + netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA RBR table %p\n", + rp->rbr); + return -EINVAL; + } + rp->rbr_table_size = MAX_RBR_RING_SIZE; + rp->rbr_index = 0; + rp->rbr_pending = 0; + + return 0; +} + +static void niu_set_max_burst(struct niu *np, struct tx_ring_info *rp) +{ + int mtu = np->dev->mtu; + + /* These values are recommended by the HW designers for fair + * utilization of DRR amongst the rings. + */ + rp->max_burst = mtu + 32; + if (rp->max_burst > 4096) + rp->max_burst = 4096; +} + +static int niu_alloc_tx_ring_info(struct niu *np, + struct tx_ring_info *rp) +{ + BUILD_BUG_ON(sizeof(struct txdma_mailbox) != 64); + + rp->mbox = np->ops->alloc_coherent(np->device, + sizeof(struct txdma_mailbox), + &rp->mbox_dma, GFP_KERNEL); + if (!rp->mbox) + return -ENOMEM; + if ((unsigned long)rp->mbox & (64UL - 1)) { + netdev_err(np->dev, "Coherent alloc gives misaligned TXDMA mailbox %p\n", + rp->mbox); + return -EINVAL; + } + + rp->descr = np->ops->alloc_coherent(np->device, + MAX_TX_RING_SIZE * sizeof(__le64), + &rp->descr_dma, GFP_KERNEL); + if (!rp->descr) + return -ENOMEM; + if ((unsigned long)rp->descr & (64UL - 1)) { + netdev_err(np->dev, "Coherent alloc gives misaligned TXDMA descr table %p\n", + rp->descr); + return -EINVAL; + } + + rp->pending = MAX_TX_RING_SIZE; + rp->prod = 0; + rp->cons = 0; + rp->wrap_bit = 0; + + /* XXX make these configurable... XXX */ + rp->mark_freq = rp->pending / 4; + + niu_set_max_burst(np, rp); + + return 0; +} + +static void niu_size_rbr(struct niu *np, struct rx_ring_info *rp) +{ + u16 bss; + + bss = min(PAGE_SHIFT, 15); + + rp->rbr_block_size = 1 << bss; + rp->rbr_blocks_per_page = 1 << (PAGE_SHIFT-bss); + + rp->rbr_sizes[0] = 256; + rp->rbr_sizes[1] = 1024; + if (np->dev->mtu > ETH_DATA_LEN) { + switch (PAGE_SIZE) { + case 4 * 1024: + rp->rbr_sizes[2] = 4096; + break; + + default: + rp->rbr_sizes[2] = 8192; + break; + } + } else { + rp->rbr_sizes[2] = 2048; + } + rp->rbr_sizes[3] = rp->rbr_block_size; +} + +static int niu_alloc_channels(struct niu *np) +{ + struct niu_parent *parent = np->parent; + int first_rx_channel, first_tx_channel; + int num_rx_rings, num_tx_rings; + struct rx_ring_info *rx_rings; + struct tx_ring_info *tx_rings; + int i, port, err; + + port = np->port; + first_rx_channel = first_tx_channel = 0; + for (i = 0; i < port; i++) { + first_rx_channel += parent->rxchan_per_port[i]; + first_tx_channel += parent->txchan_per_port[i]; + } + + num_rx_rings = parent->rxchan_per_port[port]; + num_tx_rings = parent->txchan_per_port[port]; + + rx_rings = kcalloc(num_rx_rings, sizeof(struct rx_ring_info), + GFP_KERNEL); + err = -ENOMEM; + if (!rx_rings) + goto out_err; + + np->num_rx_rings = num_rx_rings; + smp_wmb(); + np->rx_rings = rx_rings; + + netif_set_real_num_rx_queues(np->dev, num_rx_rings); + + for (i = 0; i < np->num_rx_rings; i++) { + struct rx_ring_info *rp = &np->rx_rings[i]; + + rp->np = np; + rp->rx_channel = first_rx_channel + i; + + err = niu_alloc_rx_ring_info(np, rp); + if (err) + goto out_err; + + niu_size_rbr(np, rp); + + /* XXX better defaults, configurable, etc... XXX */ + rp->nonsyn_window = 64; + rp->nonsyn_threshold = rp->rcr_table_size - 64; + rp->syn_window = 64; + rp->syn_threshold = rp->rcr_table_size - 64; + rp->rcr_pkt_threshold = 16; + rp->rcr_timeout = 8; + rp->rbr_kick_thresh = RBR_REFILL_MIN; + if (rp->rbr_kick_thresh < rp->rbr_blocks_per_page) + rp->rbr_kick_thresh = rp->rbr_blocks_per_page; + + err = niu_rbr_fill(np, rp, GFP_KERNEL); + if (err) + return err; + } + + tx_rings = kcalloc(num_tx_rings, sizeof(struct tx_ring_info), + GFP_KERNEL); + err = -ENOMEM; + if (!tx_rings) + goto out_err; + + np->num_tx_rings = num_tx_rings; + smp_wmb(); + np->tx_rings = tx_rings; + + netif_set_real_num_tx_queues(np->dev, num_tx_rings); + + for (i = 0; i < np->num_tx_rings; i++) { + struct tx_ring_info *rp = &np->tx_rings[i]; + + rp->np = np; + rp->tx_channel = first_tx_channel + i; + + err = niu_alloc_tx_ring_info(np, rp); + if (err) + goto out_err; + } + + return 0; + +out_err: + niu_free_channels(np); + return err; +} + +static int niu_tx_cs_sng_poll(struct niu *np, int channel) +{ + int limit = 1000; + + while (--limit > 0) { + u64 val = nr64(TX_CS(channel)); + if (val & TX_CS_SNG_STATE) + return 0; + } + return -ENODEV; +} + +static int niu_tx_channel_stop(struct niu *np, int channel) +{ + u64 val = nr64(TX_CS(channel)); + + val |= TX_CS_STOP_N_GO; + nw64(TX_CS(channel), val); + + return niu_tx_cs_sng_poll(np, channel); +} + +static int niu_tx_cs_reset_poll(struct niu *np, int channel) +{ + int limit = 1000; + + while (--limit > 0) { + u64 val = nr64(TX_CS(channel)); + if (!(val & TX_CS_RST)) + return 0; + } + return -ENODEV; +} + +static int niu_tx_channel_reset(struct niu *np, int channel) +{ + u64 val = nr64(TX_CS(channel)); + int err; + + val |= TX_CS_RST; + nw64(TX_CS(channel), val); + + err = niu_tx_cs_reset_poll(np, channel); + if (!err) + nw64(TX_RING_KICK(channel), 0); + + return err; +} + +static int niu_tx_channel_lpage_init(struct niu *np, int channel) +{ + u64 val; + + nw64(TX_LOG_MASK1(channel), 0); + nw64(TX_LOG_VAL1(channel), 0); + nw64(TX_LOG_MASK2(channel), 0); + nw64(TX_LOG_VAL2(channel), 0); + nw64(TX_LOG_PAGE_RELO1(channel), 0); + nw64(TX_LOG_PAGE_RELO2(channel), 0); + nw64(TX_LOG_PAGE_HDL(channel), 0); + + val = (u64)np->port << TX_LOG_PAGE_VLD_FUNC_SHIFT; + val |= (TX_LOG_PAGE_VLD_PAGE0 | TX_LOG_PAGE_VLD_PAGE1); + nw64(TX_LOG_PAGE_VLD(channel), val); + + /* XXX TXDMA 32bit mode? XXX */ + + return 0; +} + +static void niu_txc_enable_port(struct niu *np, int on) +{ + unsigned long flags; + u64 val, mask; + + niu_lock_parent(np, flags); + val = nr64(TXC_CONTROL); + mask = (u64)1 << np->port; + if (on) { + val |= TXC_CONTROL_ENABLE | mask; + } else { + val &= ~mask; + if ((val & ~TXC_CONTROL_ENABLE) == 0) + val &= ~TXC_CONTROL_ENABLE; + } + nw64(TXC_CONTROL, val); + niu_unlock_parent(np, flags); +} + +static void niu_txc_set_imask(struct niu *np, u64 imask) +{ + unsigned long flags; + u64 val; + + niu_lock_parent(np, flags); + val = nr64(TXC_INT_MASK); + val &= ~TXC_INT_MASK_VAL(np->port); + val |= (imask << TXC_INT_MASK_VAL_SHIFT(np->port)); + niu_unlock_parent(np, flags); +} + +static void niu_txc_port_dma_enable(struct niu *np, int on) +{ + u64 val = 0; + + if (on) { + int i; + + for (i = 0; i < np->num_tx_rings; i++) + val |= (1 << np->tx_rings[i].tx_channel); + } + nw64(TXC_PORT_DMA(np->port), val); +} + +static int niu_init_one_tx_channel(struct niu *np, struct tx_ring_info *rp) +{ + int err, channel = rp->tx_channel; + u64 val, ring_len; + + err = niu_tx_channel_stop(np, channel); + if (err) + return err; + + err = niu_tx_channel_reset(np, channel); + if (err) + return err; + + err = niu_tx_channel_lpage_init(np, channel); + if (err) + return err; + + nw64(TXC_DMA_MAX(channel), rp->max_burst); + nw64(TX_ENT_MSK(channel), 0); + + if (rp->descr_dma & ~(TX_RNG_CFIG_STADDR_BASE | + TX_RNG_CFIG_STADDR)) { + netdev_err(np->dev, "TX ring channel %d DMA addr (%llx) is not aligned\n", + channel, (unsigned long long)rp->descr_dma); + return -EINVAL; + } + + /* The length field in TX_RNG_CFIG is measured in 64-byte + * blocks. rp->pending is the number of TX descriptors in + * our ring, 8 bytes each, thus we divide by 8 bytes more + * to get the proper value the chip wants. + */ + ring_len = (rp->pending / 8); + + val = ((ring_len << TX_RNG_CFIG_LEN_SHIFT) | + rp->descr_dma); + nw64(TX_RNG_CFIG(channel), val); + + if (((rp->mbox_dma >> 32) & ~TXDMA_MBH_MBADDR) || + ((u32)rp->mbox_dma & ~TXDMA_MBL_MBADDR)) { + netdev_err(np->dev, "TX ring channel %d MBOX addr (%llx) has invalid bits\n", + channel, (unsigned long long)rp->mbox_dma); + return -EINVAL; + } + nw64(TXDMA_MBH(channel), rp->mbox_dma >> 32); + nw64(TXDMA_MBL(channel), rp->mbox_dma & TXDMA_MBL_MBADDR); + + nw64(TX_CS(channel), 0); + + rp->last_pkt_cnt = 0; + + return 0; +} + +static void niu_init_rdc_groups(struct niu *np) +{ + struct niu_rdc_tables *tp = &np->parent->rdc_group_cfg[np->port]; + int i, first_table_num = tp->first_table_num; + + for (i = 0; i < tp->num_tables; i++) { + struct rdc_table *tbl = &tp->tables[i]; + int this_table = first_table_num + i; + int slot; + + for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++) + nw64(RDC_TBL(this_table, slot), + tbl->rxdma_channel[slot]); + } + + nw64(DEF_RDC(np->port), np->parent->rdc_default[np->port]); +} + +static void niu_init_drr_weight(struct niu *np) +{ + int type = phy_decode(np->parent->port_phy, np->port); + u64 val; + + switch (type) { + case PORT_TYPE_10G: + val = PT_DRR_WEIGHT_DEFAULT_10G; + break; + + case PORT_TYPE_1G: + default: + val = PT_DRR_WEIGHT_DEFAULT_1G; + break; + } + nw64(PT_DRR_WT(np->port), val); +} + +static int niu_init_hostinfo(struct niu *np) +{ + struct niu_parent *parent = np->parent; + struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port]; + int i, err, num_alt = niu_num_alt_addr(np); + int first_rdc_table = tp->first_table_num; + + err = niu_set_primary_mac_rdc_table(np, first_rdc_table, 1); + if (err) + return err; + + err = niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1); + if (err) + return err; + + for (i = 0; i < num_alt; i++) { + err = niu_set_alt_mac_rdc_table(np, i, first_rdc_table, 1); + if (err) + return err; + } + + return 0; +} + +static int niu_rx_channel_reset(struct niu *np, int channel) +{ + return niu_set_and_wait_clear(np, RXDMA_CFIG1(channel), + RXDMA_CFIG1_RST, 1000, 10, + "RXDMA_CFIG1"); +} + +static int niu_rx_channel_lpage_init(struct niu *np, int channel) +{ + u64 val; + + nw64(RX_LOG_MASK1(channel), 0); + nw64(RX_LOG_VAL1(channel), 0); + nw64(RX_LOG_MASK2(channel), 0); + nw64(RX_LOG_VAL2(channel), 0); + nw64(RX_LOG_PAGE_RELO1(channel), 0); + nw64(RX_LOG_PAGE_RELO2(channel), 0); + nw64(RX_LOG_PAGE_HDL(channel), 0); + + val = (u64)np->port << RX_LOG_PAGE_VLD_FUNC_SHIFT; + val |= (RX_LOG_PAGE_VLD_PAGE0 | RX_LOG_PAGE_VLD_PAGE1); + nw64(RX_LOG_PAGE_VLD(channel), val); + + return 0; +} + +static void niu_rx_channel_wred_init(struct niu *np, struct rx_ring_info *rp) +{ + u64 val; + + val = (((u64)rp->nonsyn_window << RDC_RED_PARA_WIN_SHIFT) | + ((u64)rp->nonsyn_threshold << RDC_RED_PARA_THRE_SHIFT) | + ((u64)rp->syn_window << RDC_RED_PARA_WIN_SYN_SHIFT) | + ((u64)rp->syn_threshold << RDC_RED_PARA_THRE_SYN_SHIFT)); + nw64(RDC_RED_PARA(rp->rx_channel), val); +} + +static int niu_compute_rbr_cfig_b(struct rx_ring_info *rp, u64 *ret) +{ + u64 val = 0; + + *ret = 0; + switch (rp->rbr_block_size) { + case 4 * 1024: + val |= (RBR_BLKSIZE_4K << RBR_CFIG_B_BLKSIZE_SHIFT); + break; + case 8 * 1024: + val |= (RBR_BLKSIZE_8K << RBR_CFIG_B_BLKSIZE_SHIFT); + break; + case 16 * 1024: + val |= (RBR_BLKSIZE_16K << RBR_CFIG_B_BLKSIZE_SHIFT); + break; + case 32 * 1024: + val |= (RBR_BLKSIZE_32K << RBR_CFIG_B_BLKSIZE_SHIFT); + break; + default: + return -EINVAL; + } + val |= RBR_CFIG_B_VLD2; + switch (rp->rbr_sizes[2]) { + case 2 * 1024: + val |= (RBR_BUFSZ2_2K << RBR_CFIG_B_BUFSZ2_SHIFT); + break; + case 4 * 1024: + val |= (RBR_BUFSZ2_4K << RBR_CFIG_B_BUFSZ2_SHIFT); + break; + case 8 * 1024: + val |= (RBR_BUFSZ2_8K << RBR_CFIG_B_BUFSZ2_SHIFT); + break; + case 16 * 1024: + val |= (RBR_BUFSZ2_16K << RBR_CFIG_B_BUFSZ2_SHIFT); + break; + + default: + return -EINVAL; + } + val |= RBR_CFIG_B_VLD1; + switch (rp->rbr_sizes[1]) { + case 1 * 1024: + val |= (RBR_BUFSZ1_1K << RBR_CFIG_B_BUFSZ1_SHIFT); + break; + case 2 * 1024: + val |= (RBR_BUFSZ1_2K << RBR_CFIG_B_BUFSZ1_SHIFT); + break; + case 4 * 1024: + val |= (RBR_BUFSZ1_4K << RBR_CFIG_B_BUFSZ1_SHIFT); + break; + case 8 * 1024: + val |= (RBR_BUFSZ1_8K << RBR_CFIG_B_BUFSZ1_SHIFT); + break; + + default: + return -EINVAL; + } + val |= RBR_CFIG_B_VLD0; + switch (rp->rbr_sizes[0]) { + case 256: + val |= (RBR_BUFSZ0_256 << RBR_CFIG_B_BUFSZ0_SHIFT); + break; + case 512: + val |= (RBR_BUFSZ0_512 << RBR_CFIG_B_BUFSZ0_SHIFT); + break; + case 1 * 1024: + val |= (RBR_BUFSZ0_1K << RBR_CFIG_B_BUFSZ0_SHIFT); + break; + case 2 * 1024: + val |= (RBR_BUFSZ0_2K << RBR_CFIG_B_BUFSZ0_SHIFT); + break; + + default: + return -EINVAL; + } + + *ret = val; + return 0; +} + +static int niu_enable_rx_channel(struct niu *np, int channel, int on) +{ + u64 val = nr64(RXDMA_CFIG1(channel)); + int limit; + + if (on) + val |= RXDMA_CFIG1_EN; + else + val &= ~RXDMA_CFIG1_EN; + nw64(RXDMA_CFIG1(channel), val); + + limit = 1000; + while (--limit > 0) { + if (nr64(RXDMA_CFIG1(channel)) & RXDMA_CFIG1_QST) + break; + udelay(10); + } + if (limit <= 0) + return -ENODEV; + return 0; +} + +static int niu_init_one_rx_channel(struct niu *np, struct rx_ring_info *rp) +{ + int err, channel = rp->rx_channel; + u64 val; + + err = niu_rx_channel_reset(np, channel); + if (err) + return err; + + err = niu_rx_channel_lpage_init(np, channel); + if (err) + return err; + + niu_rx_channel_wred_init(np, rp); + + nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_RBR_EMPTY); + nw64(RX_DMA_CTL_STAT(channel), + (RX_DMA_CTL_STAT_MEX | + RX_DMA_CTL_STAT_RCRTHRES | + RX_DMA_CTL_STAT_RCRTO | + RX_DMA_CTL_STAT_RBR_EMPTY)); + nw64(RXDMA_CFIG1(channel), rp->mbox_dma >> 32); + nw64(RXDMA_CFIG2(channel), + ((rp->mbox_dma & RXDMA_CFIG2_MBADDR_L) | + RXDMA_CFIG2_FULL_HDR)); + nw64(RBR_CFIG_A(channel), + ((u64)rp->rbr_table_size << RBR_CFIG_A_LEN_SHIFT) | + (rp->rbr_dma & (RBR_CFIG_A_STADDR_BASE | RBR_CFIG_A_STADDR))); + err = niu_compute_rbr_cfig_b(rp, &val); + if (err) + return err; + nw64(RBR_CFIG_B(channel), val); + nw64(RCRCFIG_A(channel), + ((u64)rp->rcr_table_size << RCRCFIG_A_LEN_SHIFT) | + (rp->rcr_dma & (RCRCFIG_A_STADDR_BASE | RCRCFIG_A_STADDR))); + nw64(RCRCFIG_B(channel), + ((u64)rp->rcr_pkt_threshold << RCRCFIG_B_PTHRES_SHIFT) | + RCRCFIG_B_ENTOUT | + ((u64)rp->rcr_timeout << RCRCFIG_B_TIMEOUT_SHIFT)); + + err = niu_enable_rx_channel(np, channel, 1); + if (err) + return err; + + nw64(RBR_KICK(channel), rp->rbr_index); + + val = nr64(RX_DMA_CTL_STAT(channel)); + val |= RX_DMA_CTL_STAT_RBR_EMPTY; + nw64(RX_DMA_CTL_STAT(channel), val); + + return 0; +} + +static int niu_init_rx_channels(struct niu *np) +{ + unsigned long flags; + u64 seed = jiffies_64; + int err, i; + + niu_lock_parent(np, flags); + nw64(RX_DMA_CK_DIV, np->parent->rxdma_clock_divider); + nw64(RED_RAN_INIT, RED_RAN_INIT_OPMODE | (seed & RED_RAN_INIT_VAL)); + niu_unlock_parent(np, flags); + + /* XXX RXDMA 32bit mode? XXX */ + + niu_init_rdc_groups(np); + niu_init_drr_weight(np); + + err = niu_init_hostinfo(np); + if (err) + return err; + + for (i = 0; i < np->num_rx_rings; i++) { + struct rx_ring_info *rp = &np->rx_rings[i]; + + err = niu_init_one_rx_channel(np, rp); + if (err) + return err; + } + + return 0; +} + +static int niu_set_ip_frag_rule(struct niu *np) +{ + struct niu_parent *parent = np->parent; + struct niu_classifier *cp = &np->clas; + struct niu_tcam_entry *tp; + int index, err; + + index = cp->tcam_top; + tp = &parent->tcam[index]; + + /* Note that the noport bit is the same in both ipv4 and + * ipv6 format TCAM entries. + */ + memset(tp, 0, sizeof(*tp)); + tp->key[1] = TCAM_V4KEY1_NOPORT; + tp->key_mask[1] = TCAM_V4KEY1_NOPORT; + tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET | + ((u64)0 << TCAM_ASSOCDATA_OFFSET_SHIFT)); + err = tcam_write(np, index, tp->key, tp->key_mask); + if (err) + return err; + err = tcam_assoc_write(np, index, tp->assoc_data); + if (err) + return err; + tp->valid = 1; + cp->tcam_valid_entries++; + + return 0; +} + +static int niu_init_classifier_hw(struct niu *np) +{ + struct niu_parent *parent = np->parent; + struct niu_classifier *cp = &np->clas; + int i, err; + + nw64(H1POLY, cp->h1_init); + nw64(H2POLY, cp->h2_init); + + err = niu_init_hostinfo(np); + if (err) + return err; + + for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++) { + struct niu_vlan_rdc *vp = &cp->vlan_mappings[i]; + + vlan_tbl_write(np, i, np->port, + vp->vlan_pref, vp->rdc_num); + } + + for (i = 0; i < cp->num_alt_mac_mappings; i++) { + struct niu_altmac_rdc *ap = &cp->alt_mac_mappings[i]; + + err = niu_set_alt_mac_rdc_table(np, ap->alt_mac_num, + ap->rdc_num, ap->mac_pref); + if (err) + return err; + } + + for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) { + int index = i - CLASS_CODE_USER_PROG1; + + err = niu_set_tcam_key(np, i, parent->tcam_key[index]); + if (err) + return err; + err = niu_set_flow_key(np, i, parent->flow_key[index]); + if (err) + return err; + } + + err = niu_set_ip_frag_rule(np); + if (err) + return err; + + tcam_enable(np, 1); + + return 0; +} + +static int niu_zcp_write(struct niu *np, int index, u64 *data) +{ + nw64(ZCP_RAM_DATA0, data[0]); + nw64(ZCP_RAM_DATA1, data[1]); + nw64(ZCP_RAM_DATA2, data[2]); + nw64(ZCP_RAM_DATA3, data[3]); + nw64(ZCP_RAM_DATA4, data[4]); + nw64(ZCP_RAM_BE, ZCP_RAM_BE_VAL); + nw64(ZCP_RAM_ACC, + (ZCP_RAM_ACC_WRITE | + (0 << ZCP_RAM_ACC_ZFCID_SHIFT) | + (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT))); + + return niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY, + 1000, 100); +} + +static int niu_zcp_read(struct niu *np, int index, u64 *data) +{ + int err; + + err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY, + 1000, 100); + if (err) { + netdev_err(np->dev, "ZCP read busy won't clear, ZCP_RAM_ACC[%llx]\n", + (unsigned long long)nr64(ZCP_RAM_ACC)); + return err; + } + + nw64(ZCP_RAM_ACC, + (ZCP_RAM_ACC_READ | + (0 << ZCP_RAM_ACC_ZFCID_SHIFT) | + (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT))); + + err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY, + 1000, 100); + if (err) { + netdev_err(np->dev, "ZCP read busy2 won't clear, ZCP_RAM_ACC[%llx]\n", + (unsigned long long)nr64(ZCP_RAM_ACC)); + return err; + } + + data[0] = nr64(ZCP_RAM_DATA0); + data[1] = nr64(ZCP_RAM_DATA1); + data[2] = nr64(ZCP_RAM_DATA2); + data[3] = nr64(ZCP_RAM_DATA3); + data[4] = nr64(ZCP_RAM_DATA4); + + return 0; +} + +static void niu_zcp_cfifo_reset(struct niu *np) +{ + u64 val = nr64(RESET_CFIFO); + + val |= RESET_CFIFO_RST(np->port); + nw64(RESET_CFIFO, val); + udelay(10); + + val &= ~RESET_CFIFO_RST(np->port); + nw64(RESET_CFIFO, val); +} + +static int niu_init_zcp(struct niu *np) +{ + u64 data[5], rbuf[5]; + int i, max, err; + + if (np->parent->plat_type != PLAT_TYPE_NIU) { + if (np->port == 0 || np->port == 1) + max = ATLAS_P0_P1_CFIFO_ENTRIES; + else + max = ATLAS_P2_P3_CFIFO_ENTRIES; + } else + max = NIU_CFIFO_ENTRIES; + + data[0] = 0; + data[1] = 0; + data[2] = 0; + data[3] = 0; + data[4] = 0; + + for (i = 0; i < max; i++) { + err = niu_zcp_write(np, i, data); + if (err) + return err; + err = niu_zcp_read(np, i, rbuf); + if (err) + return err; + } + + niu_zcp_cfifo_reset(np); + nw64(CFIFO_ECC(np->port), 0); + nw64(ZCP_INT_STAT, ZCP_INT_STAT_ALL); + (void) nr64(ZCP_INT_STAT); + nw64(ZCP_INT_MASK, ZCP_INT_MASK_ALL); + + return 0; +} + +static void niu_ipp_write(struct niu *np, int index, u64 *data) +{ + u64 val = nr64_ipp(IPP_CFIG); + + nw64_ipp(IPP_CFIG, val | IPP_CFIG_DFIFO_PIO_W); + nw64_ipp(IPP_DFIFO_WR_PTR, index); + nw64_ipp(IPP_DFIFO_WR0, data[0]); + nw64_ipp(IPP_DFIFO_WR1, data[1]); + nw64_ipp(IPP_DFIFO_WR2, data[2]); + nw64_ipp(IPP_DFIFO_WR3, data[3]); + nw64_ipp(IPP_DFIFO_WR4, data[4]); + nw64_ipp(IPP_CFIG, val & ~IPP_CFIG_DFIFO_PIO_W); +} + +static void niu_ipp_read(struct niu *np, int index, u64 *data) +{ + nw64_ipp(IPP_DFIFO_RD_PTR, index); + data[0] = nr64_ipp(IPP_DFIFO_RD0); + data[1] = nr64_ipp(IPP_DFIFO_RD1); + data[2] = nr64_ipp(IPP_DFIFO_RD2); + data[3] = nr64_ipp(IPP_DFIFO_RD3); + data[4] = nr64_ipp(IPP_DFIFO_RD4); +} + +static int niu_ipp_reset(struct niu *np) +{ + return niu_set_and_wait_clear_ipp(np, IPP_CFIG, IPP_CFIG_SOFT_RST, + 1000, 100, "IPP_CFIG"); +} + +static int niu_init_ipp(struct niu *np) +{ + u64 data[5], rbuf[5], val; + int i, max, err; + + if (np->parent->plat_type != PLAT_TYPE_NIU) { + if (np->port == 0 || np->port == 1) + max = ATLAS_P0_P1_DFIFO_ENTRIES; + else + max = ATLAS_P2_P3_DFIFO_ENTRIES; + } else + max = NIU_DFIFO_ENTRIES; + + data[0] = 0; + data[1] = 0; + data[2] = 0; + data[3] = 0; + data[4] = 0; + + for (i = 0; i < max; i++) { + niu_ipp_write(np, i, data); + niu_ipp_read(np, i, rbuf); + } + + (void) nr64_ipp(IPP_INT_STAT); + (void) nr64_ipp(IPP_INT_STAT); + + err = niu_ipp_reset(np); + if (err) + return err; + + (void) nr64_ipp(IPP_PKT_DIS); + (void) nr64_ipp(IPP_BAD_CS_CNT); + (void) nr64_ipp(IPP_ECC); + + (void) nr64_ipp(IPP_INT_STAT); + + nw64_ipp(IPP_MSK, ~IPP_MSK_ALL); + + val = nr64_ipp(IPP_CFIG); + val &= ~IPP_CFIG_IP_MAX_PKT; + val |= (IPP_CFIG_IPP_ENABLE | + IPP_CFIG_DFIFO_ECC_EN | + IPP_CFIG_DROP_BAD_CRC | + IPP_CFIG_CKSUM_EN | + (0x1ffff << IPP_CFIG_IP_MAX_PKT_SHIFT)); + nw64_ipp(IPP_CFIG, val); + + return 0; +} + +static void niu_handle_led(struct niu *np, int status) +{ + u64 val; + val = nr64_mac(XMAC_CONFIG); + + if ((np->flags & NIU_FLAGS_10G) != 0 && + (np->flags & NIU_FLAGS_FIBER) != 0) { + if (status) { + val |= XMAC_CONFIG_LED_POLARITY; + val &= ~XMAC_CONFIG_FORCE_LED_ON; + } else { + val |= XMAC_CONFIG_FORCE_LED_ON; + val &= ~XMAC_CONFIG_LED_POLARITY; + } + } + + nw64_mac(XMAC_CONFIG, val); +} + +static void niu_init_xif_xmac(struct niu *np) +{ + struct niu_link_config *lp = &np->link_config; + u64 val; + + if (np->flags & NIU_FLAGS_XCVR_SERDES) { + val = nr64(MIF_CONFIG); + val |= MIF_CONFIG_ATCA_GE; + nw64(MIF_CONFIG, val); + } + + val = nr64_mac(XMAC_CONFIG); + val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC; + + val |= XMAC_CONFIG_TX_OUTPUT_EN; + + if (lp->loopback_mode == LOOPBACK_MAC) { + val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC; + val |= XMAC_CONFIG_LOOPBACK; + } else { + val &= ~XMAC_CONFIG_LOOPBACK; + } + + if (np->flags & NIU_FLAGS_10G) { + val &= ~XMAC_CONFIG_LFS_DISABLE; + } else { + val |= XMAC_CONFIG_LFS_DISABLE; + if (!(np->flags & NIU_FLAGS_FIBER) && + !(np->flags & NIU_FLAGS_XCVR_SERDES)) + val |= XMAC_CONFIG_1G_PCS_BYPASS; + else + val &= ~XMAC_CONFIG_1G_PCS_BYPASS; + } + + val &= ~XMAC_CONFIG_10G_XPCS_BYPASS; + + if (lp->active_speed == SPEED_100) + val |= XMAC_CONFIG_SEL_CLK_25MHZ; + else + val &= ~XMAC_CONFIG_SEL_CLK_25MHZ; + + nw64_mac(XMAC_CONFIG, val); + + val = nr64_mac(XMAC_CONFIG); + val &= ~XMAC_CONFIG_MODE_MASK; + if (np->flags & NIU_FLAGS_10G) { + val |= XMAC_CONFIG_MODE_XGMII; + } else { + if (lp->active_speed == SPEED_1000) + val |= XMAC_CONFIG_MODE_GMII; + else + val |= XMAC_CONFIG_MODE_MII; + } + + nw64_mac(XMAC_CONFIG, val); +} + +static void niu_init_xif_bmac(struct niu *np) +{ + struct niu_link_config *lp = &np->link_config; + u64 val; + + val = BMAC_XIF_CONFIG_TX_OUTPUT_EN; + + if (lp->loopback_mode == LOOPBACK_MAC) + val |= BMAC_XIF_CONFIG_MII_LOOPBACK; + else + val &= ~BMAC_XIF_CONFIG_MII_LOOPBACK; + + if (lp->active_speed == SPEED_1000) + val |= BMAC_XIF_CONFIG_GMII_MODE; + else + val &= ~BMAC_XIF_CONFIG_GMII_MODE; + + val &= ~(BMAC_XIF_CONFIG_LINK_LED | + BMAC_XIF_CONFIG_LED_POLARITY); + + if (!(np->flags & NIU_FLAGS_10G) && + !(np->flags & NIU_FLAGS_FIBER) && + lp->active_speed == SPEED_100) + val |= BMAC_XIF_CONFIG_25MHZ_CLOCK; + else + val &= ~BMAC_XIF_CONFIG_25MHZ_CLOCK; + + nw64_mac(BMAC_XIF_CONFIG, val); +} + +static void niu_init_xif(struct niu *np) +{ + if (np->flags & NIU_FLAGS_XMAC) + niu_init_xif_xmac(np); + else + niu_init_xif_bmac(np); +} + +static void niu_pcs_mii_reset(struct niu *np) +{ + int limit = 1000; + u64 val = nr64_pcs(PCS_MII_CTL); + val |= PCS_MII_CTL_RST; + nw64_pcs(PCS_MII_CTL, val); + while ((--limit >= 0) && (val & PCS_MII_CTL_RST)) { + udelay(100); + val = nr64_pcs(PCS_MII_CTL); + } +} + +static void niu_xpcs_reset(struct niu *np) +{ + int limit = 1000; + u64 val = nr64_xpcs(XPCS_CONTROL1); + val |= XPCS_CONTROL1_RESET; + nw64_xpcs(XPCS_CONTROL1, val); + while ((--limit >= 0) && (val & XPCS_CONTROL1_RESET)) { + udelay(100); + val = nr64_xpcs(XPCS_CONTROL1); + } +} + +static int niu_init_pcs(struct niu *np) +{ + struct niu_link_config *lp = &np->link_config; + u64 val; + + switch (np->flags & (NIU_FLAGS_10G | + NIU_FLAGS_FIBER | + NIU_FLAGS_XCVR_SERDES)) { + case NIU_FLAGS_FIBER: + /* 1G fiber */ + nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE); + nw64_pcs(PCS_DPATH_MODE, 0); + niu_pcs_mii_reset(np); + break; + + case NIU_FLAGS_10G: + case NIU_FLAGS_10G | NIU_FLAGS_FIBER: + case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES: + /* 10G SERDES */ + if (!(np->flags & NIU_FLAGS_XMAC)) + return -EINVAL; + + /* 10G copper or fiber */ + val = nr64_mac(XMAC_CONFIG); + val &= ~XMAC_CONFIG_10G_XPCS_BYPASS; + nw64_mac(XMAC_CONFIG, val); + + niu_xpcs_reset(np); + + val = nr64_xpcs(XPCS_CONTROL1); + if (lp->loopback_mode == LOOPBACK_PHY) + val |= XPCS_CONTROL1_LOOPBACK; + else + val &= ~XPCS_CONTROL1_LOOPBACK; + nw64_xpcs(XPCS_CONTROL1, val); + + nw64_xpcs(XPCS_DESKEW_ERR_CNT, 0); + (void) nr64_xpcs(XPCS_SYMERR_CNT01); + (void) nr64_xpcs(XPCS_SYMERR_CNT23); + break; + + + case NIU_FLAGS_XCVR_SERDES: + /* 1G SERDES */ + niu_pcs_mii_reset(np); + nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE); + nw64_pcs(PCS_DPATH_MODE, 0); + break; + + case 0: + /* 1G copper */ + case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER: + /* 1G RGMII FIBER */ + nw64_pcs(PCS_DPATH_MODE, PCS_DPATH_MODE_MII); + niu_pcs_mii_reset(np); + break; + + default: + return -EINVAL; + } + + return 0; +} + +static int niu_reset_tx_xmac(struct niu *np) +{ + return niu_set_and_wait_clear_mac(np, XTXMAC_SW_RST, + (XTXMAC_SW_RST_REG_RS | + XTXMAC_SW_RST_SOFT_RST), + 1000, 100, "XTXMAC_SW_RST"); +} + +static int niu_reset_tx_bmac(struct niu *np) +{ + int limit; + + nw64_mac(BTXMAC_SW_RST, BTXMAC_SW_RST_RESET); + limit = 1000; + while (--limit >= 0) { + if (!(nr64_mac(BTXMAC_SW_RST) & BTXMAC_SW_RST_RESET)) + break; + udelay(100); + } + if (limit < 0) { + dev_err(np->device, "Port %u TX BMAC would not reset, BTXMAC_SW_RST[%llx]\n", + np->port, + (unsigned long long) nr64_mac(BTXMAC_SW_RST)); + return -ENODEV; + } + + return 0; +} + +static int niu_reset_tx_mac(struct niu *np) +{ + if (np->flags & NIU_FLAGS_XMAC) + return niu_reset_tx_xmac(np); + else + return niu_reset_tx_bmac(np); +} + +static void niu_init_tx_xmac(struct niu *np, u64 min, u64 max) +{ + u64 val; + + val = nr64_mac(XMAC_MIN); + val &= ~(XMAC_MIN_TX_MIN_PKT_SIZE | + XMAC_MIN_RX_MIN_PKT_SIZE); + val |= (min << XMAC_MIN_RX_MIN_PKT_SIZE_SHFT); + val |= (min << XMAC_MIN_TX_MIN_PKT_SIZE_SHFT); + nw64_mac(XMAC_MIN, val); + + nw64_mac(XMAC_MAX, max); + + nw64_mac(XTXMAC_STAT_MSK, ~(u64)0); + + val = nr64_mac(XMAC_IPG); + if (np->flags & NIU_FLAGS_10G) { + val &= ~XMAC_IPG_IPG_XGMII; + val |= (IPG_12_15_XGMII << XMAC_IPG_IPG_XGMII_SHIFT); + } else { + val &= ~XMAC_IPG_IPG_MII_GMII; + val |= (IPG_12_MII_GMII << XMAC_IPG_IPG_MII_GMII_SHIFT); + } + nw64_mac(XMAC_IPG, val); + + val = nr64_mac(XMAC_CONFIG); + val &= ~(XMAC_CONFIG_ALWAYS_NO_CRC | + XMAC_CONFIG_STRETCH_MODE | + XMAC_CONFIG_VAR_MIN_IPG_EN | + XMAC_CONFIG_TX_ENABLE); + nw64_mac(XMAC_CONFIG, val); + + nw64_mac(TXMAC_FRM_CNT, 0); + nw64_mac(TXMAC_BYTE_CNT, 0); +} + +static void niu_init_tx_bmac(struct niu *np, u64 min, u64 max) +{ + u64 val; + + nw64_mac(BMAC_MIN_FRAME, min); + nw64_mac(BMAC_MAX_FRAME, max); + + nw64_mac(BTXMAC_STATUS_MASK, ~(u64)0); + nw64_mac(BMAC_CTRL_TYPE, 0x8808); + nw64_mac(BMAC_PREAMBLE_SIZE, 7); + + val = nr64_mac(BTXMAC_CONFIG); + val &= ~(BTXMAC_CONFIG_FCS_DISABLE | + BTXMAC_CONFIG_ENABLE); + nw64_mac(BTXMAC_CONFIG, val); +} + +static void niu_init_tx_mac(struct niu *np) +{ + u64 min, max; + + min = 64; + if (np->dev->mtu > ETH_DATA_LEN) + max = 9216; + else + max = 1522; + + /* The XMAC_MIN register only accepts values for TX min which + * have the low 3 bits cleared. + */ + BUG_ON(min & 0x7); + + if (np->flags & NIU_FLAGS_XMAC) + niu_init_tx_xmac(np, min, max); + else + niu_init_tx_bmac(np, min, max); +} + +static int niu_reset_rx_xmac(struct niu *np) +{ + int limit; + + nw64_mac(XRXMAC_SW_RST, + XRXMAC_SW_RST_REG_RS | XRXMAC_SW_RST_SOFT_RST); + limit = 1000; + while (--limit >= 0) { + if (!(nr64_mac(XRXMAC_SW_RST) & (XRXMAC_SW_RST_REG_RS | + XRXMAC_SW_RST_SOFT_RST))) + break; + udelay(100); + } + if (limit < 0) { + dev_err(np->device, "Port %u RX XMAC would not reset, XRXMAC_SW_RST[%llx]\n", + np->port, + (unsigned long long) nr64_mac(XRXMAC_SW_RST)); + return -ENODEV; + } + + return 0; +} + +static int niu_reset_rx_bmac(struct niu *np) +{ + int limit; + + nw64_mac(BRXMAC_SW_RST, BRXMAC_SW_RST_RESET); + limit = 1000; + while (--limit >= 0) { + if (!(nr64_mac(BRXMAC_SW_RST) & BRXMAC_SW_RST_RESET)) + break; + udelay(100); + } + if (limit < 0) { + dev_err(np->device, "Port %u RX BMAC would not reset, BRXMAC_SW_RST[%llx]\n", + np->port, + (unsigned long long) nr64_mac(BRXMAC_SW_RST)); + return -ENODEV; + } + + return 0; +} + +static int niu_reset_rx_mac(struct niu *np) +{ + if (np->flags & NIU_FLAGS_XMAC) + return niu_reset_rx_xmac(np); + else + return niu_reset_rx_bmac(np); +} + +static void niu_init_rx_xmac(struct niu *np) +{ + struct niu_parent *parent = np->parent; + struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port]; + int first_rdc_table = tp->first_table_num; + unsigned long i; + u64 val; + + nw64_mac(XMAC_ADD_FILT0, 0); + nw64_mac(XMAC_ADD_FILT1, 0); + nw64_mac(XMAC_ADD_FILT2, 0); + nw64_mac(XMAC_ADD_FILT12_MASK, 0); + nw64_mac(XMAC_ADD_FILT00_MASK, 0); + for (i = 0; i < MAC_NUM_HASH; i++) + nw64_mac(XMAC_HASH_TBL(i), 0); + nw64_mac(XRXMAC_STAT_MSK, ~(u64)0); + niu_set_primary_mac_rdc_table(np, first_rdc_table, 1); + niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1); + + val = nr64_mac(XMAC_CONFIG); + val &= ~(XMAC_CONFIG_RX_MAC_ENABLE | + XMAC_CONFIG_PROMISCUOUS | + XMAC_CONFIG_PROMISC_GROUP | + XMAC_CONFIG_ERR_CHK_DIS | + XMAC_CONFIG_RX_CRC_CHK_DIS | + XMAC_CONFIG_RESERVED_MULTICAST | + XMAC_CONFIG_RX_CODEV_CHK_DIS | + XMAC_CONFIG_ADDR_FILTER_EN | + XMAC_CONFIG_RCV_PAUSE_ENABLE | + XMAC_CONFIG_STRIP_CRC | + XMAC_CONFIG_PASS_FLOW_CTRL | + XMAC_CONFIG_MAC2IPP_PKT_CNT_EN); + val |= (XMAC_CONFIG_HASH_FILTER_EN); + nw64_mac(XMAC_CONFIG, val); + + nw64_mac(RXMAC_BT_CNT, 0); + nw64_mac(RXMAC_BC_FRM_CNT, 0); + nw64_mac(RXMAC_MC_FRM_CNT, 0); + nw64_mac(RXMAC_FRAG_CNT, 0); + nw64_mac(RXMAC_HIST_CNT1, 0); + nw64_mac(RXMAC_HIST_CNT2, 0); + nw64_mac(RXMAC_HIST_CNT3, 0); + nw64_mac(RXMAC_HIST_CNT4, 0); + nw64_mac(RXMAC_HIST_CNT5, 0); + nw64_mac(RXMAC_HIST_CNT6, 0); + nw64_mac(RXMAC_HIST_CNT7, 0); + nw64_mac(RXMAC_MPSZER_CNT, 0); + nw64_mac(RXMAC_CRC_ER_CNT, 0); + nw64_mac(RXMAC_CD_VIO_CNT, 0); + nw64_mac(LINK_FAULT_CNT, 0); +} + +static void niu_init_rx_bmac(struct niu *np) +{ + struct niu_parent *parent = np->parent; + struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port]; + int first_rdc_table = tp->first_table_num; + unsigned long i; + u64 val; + + nw64_mac(BMAC_ADD_FILT0, 0); + nw64_mac(BMAC_ADD_FILT1, 0); + nw64_mac(BMAC_ADD_FILT2, 0); + nw64_mac(BMAC_ADD_FILT12_MASK, 0); + nw64_mac(BMAC_ADD_FILT00_MASK, 0); + for (i = 0; i < MAC_NUM_HASH; i++) + nw64_mac(BMAC_HASH_TBL(i), 0); + niu_set_primary_mac_rdc_table(np, first_rdc_table, 1); + niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1); + nw64_mac(BRXMAC_STATUS_MASK, ~(u64)0); + + val = nr64_mac(BRXMAC_CONFIG); + val &= ~(BRXMAC_CONFIG_ENABLE | + BRXMAC_CONFIG_STRIP_PAD | + BRXMAC_CONFIG_STRIP_FCS | + BRXMAC_CONFIG_PROMISC | + BRXMAC_CONFIG_PROMISC_GRP | + BRXMAC_CONFIG_ADDR_FILT_EN | + BRXMAC_CONFIG_DISCARD_DIS); + val |= (BRXMAC_CONFIG_HASH_FILT_EN); + nw64_mac(BRXMAC_CONFIG, val); + + val = nr64_mac(BMAC_ADDR_CMPEN); + val |= BMAC_ADDR_CMPEN_EN0; + nw64_mac(BMAC_ADDR_CMPEN, val); +} + +static void niu_init_rx_mac(struct niu *np) +{ + niu_set_primary_mac(np, np->dev->dev_addr); + + if (np->flags & NIU_FLAGS_XMAC) + niu_init_rx_xmac(np); + else + niu_init_rx_bmac(np); +} + +static void niu_enable_tx_xmac(struct niu *np, int on) +{ + u64 val = nr64_mac(XMAC_CONFIG); + + if (on) + val |= XMAC_CONFIG_TX_ENABLE; + else + val &= ~XMAC_CONFIG_TX_ENABLE; + nw64_mac(XMAC_CONFIG, val); +} + +static void niu_enable_tx_bmac(struct niu *np, int on) +{ + u64 val = nr64_mac(BTXMAC_CONFIG); + + if (on) + val |= BTXMAC_CONFIG_ENABLE; + else + val &= ~BTXMAC_CONFIG_ENABLE; + nw64_mac(BTXMAC_CONFIG, val); +} + +static void niu_enable_tx_mac(struct niu *np, int on) +{ + if (np->flags & NIU_FLAGS_XMAC) + niu_enable_tx_xmac(np, on); + else + niu_enable_tx_bmac(np, on); +} + +static void niu_enable_rx_xmac(struct niu *np, int on) +{ + u64 val = nr64_mac(XMAC_CONFIG); + + val &= ~(XMAC_CONFIG_HASH_FILTER_EN | + XMAC_CONFIG_PROMISCUOUS); + + if (np->flags & NIU_FLAGS_MCAST) + val |= XMAC_CONFIG_HASH_FILTER_EN; + if (np->flags & NIU_FLAGS_PROMISC) + val |= XMAC_CONFIG_PROMISCUOUS; + + if (on) + val |= XMAC_CONFIG_RX_MAC_ENABLE; + else + val &= ~XMAC_CONFIG_RX_MAC_ENABLE; + nw64_mac(XMAC_CONFIG, val); +} + +static void niu_enable_rx_bmac(struct niu *np, int on) +{ + u64 val = nr64_mac(BRXMAC_CONFIG); + + val &= ~(BRXMAC_CONFIG_HASH_FILT_EN | + BRXMAC_CONFIG_PROMISC); + + if (np->flags & NIU_FLAGS_MCAST) + val |= BRXMAC_CONFIG_HASH_FILT_EN; + if (np->flags & NIU_FLAGS_PROMISC) + val |= BRXMAC_CONFIG_PROMISC; + + if (on) + val |= BRXMAC_CONFIG_ENABLE; + else + val &= ~BRXMAC_CONFIG_ENABLE; + nw64_mac(BRXMAC_CONFIG, val); +} + +static void niu_enable_rx_mac(struct niu *np, int on) +{ + if (np->flags & NIU_FLAGS_XMAC) + niu_enable_rx_xmac(np, on); + else + niu_enable_rx_bmac(np, on); +} + +static int niu_init_mac(struct niu *np) +{ + int err; + + niu_init_xif(np); + err = niu_init_pcs(np); + if (err) + return err; + + err = niu_reset_tx_mac(np); + if (err) + return err; + niu_init_tx_mac(np); + err = niu_reset_rx_mac(np); + if (err) + return err; + niu_init_rx_mac(np); + + /* This looks hookey but the RX MAC reset we just did will + * undo some of the state we setup in niu_init_tx_mac() so we + * have to call it again. In particular, the RX MAC reset will + * set the XMAC_MAX register back to it's default value. + */ + niu_init_tx_mac(np); + niu_enable_tx_mac(np, 1); + + niu_enable_rx_mac(np, 1); + + return 0; +} + +static void niu_stop_one_tx_channel(struct niu *np, struct tx_ring_info *rp) +{ + (void) niu_tx_channel_stop(np, rp->tx_channel); +} + +static void niu_stop_tx_channels(struct niu *np) +{ + int i; + + for (i = 0; i < np->num_tx_rings; i++) { + struct tx_ring_info *rp = &np->tx_rings[i]; + + niu_stop_one_tx_channel(np, rp); + } +} + +static void niu_reset_one_tx_channel(struct niu *np, struct tx_ring_info *rp) +{ + (void) niu_tx_channel_reset(np, rp->tx_channel); +} + +static void niu_reset_tx_channels(struct niu *np) +{ + int i; + + for (i = 0; i < np->num_tx_rings; i++) { + struct tx_ring_info *rp = &np->tx_rings[i]; + + niu_reset_one_tx_channel(np, rp); + } +} + +static void niu_stop_one_rx_channel(struct niu *np, struct rx_ring_info *rp) +{ + (void) niu_enable_rx_channel(np, rp->rx_channel, 0); +} + +static void niu_stop_rx_channels(struct niu *np) +{ + int i; + + for (i = 0; i < np->num_rx_rings; i++) { + struct rx_ring_info *rp = &np->rx_rings[i]; + + niu_stop_one_rx_channel(np, rp); + } +} + +static void niu_reset_one_rx_channel(struct niu *np, struct rx_ring_info *rp) +{ + int channel = rp->rx_channel; + + (void) niu_rx_channel_reset(np, channel); + nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_ALL); + nw64(RX_DMA_CTL_STAT(channel), 0); + (void) niu_enable_rx_channel(np, channel, 0); +} + +static void niu_reset_rx_channels(struct niu *np) +{ + int i; + + for (i = 0; i < np->num_rx_rings; i++) { + struct rx_ring_info *rp = &np->rx_rings[i]; + + niu_reset_one_rx_channel(np, rp); + } +} + +static void niu_disable_ipp(struct niu *np) +{ + u64 rd, wr, val; + int limit; + + rd = nr64_ipp(IPP_DFIFO_RD_PTR); + wr = nr64_ipp(IPP_DFIFO_WR_PTR); + limit = 100; + while (--limit >= 0 && (rd != wr)) { + rd = nr64_ipp(IPP_DFIFO_RD_PTR); + wr = nr64_ipp(IPP_DFIFO_WR_PTR); + } + if (limit < 0 && + (rd != 0 && wr != 1)) { + netdev_err(np->dev, "IPP would not quiesce, rd_ptr[%llx] wr_ptr[%llx]\n", + (unsigned long long)nr64_ipp(IPP_DFIFO_RD_PTR), + (unsigned long long)nr64_ipp(IPP_DFIFO_WR_PTR)); + } + + val = nr64_ipp(IPP_CFIG); + val &= ~(IPP_CFIG_IPP_ENABLE | + IPP_CFIG_DFIFO_ECC_EN | + IPP_CFIG_DROP_BAD_CRC | + IPP_CFIG_CKSUM_EN); + nw64_ipp(IPP_CFIG, val); + + (void) niu_ipp_reset(np); +} + +static int niu_init_hw(struct niu *np) +{ + int i, err; + + netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize TXC\n"); + niu_txc_enable_port(np, 1); + niu_txc_port_dma_enable(np, 1); + niu_txc_set_imask(np, 0); + + netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize TX channels\n"); + for (i = 0; i < np->num_tx_rings; i++) { + struct tx_ring_info *rp = &np->tx_rings[i]; + + err = niu_init_one_tx_channel(np, rp); + if (err) + return err; + } + + netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize RX channels\n"); + err = niu_init_rx_channels(np); + if (err) + goto out_uninit_tx_channels; + + netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize classifier\n"); + err = niu_init_classifier_hw(np); + if (err) + goto out_uninit_rx_channels; + + netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize ZCP\n"); + err = niu_init_zcp(np); + if (err) + goto out_uninit_rx_channels; + + netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize IPP\n"); + err = niu_init_ipp(np); + if (err) + goto out_uninit_rx_channels; + + netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize MAC\n"); + err = niu_init_mac(np); + if (err) + goto out_uninit_ipp; + + return 0; + +out_uninit_ipp: + netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit IPP\n"); + niu_disable_ipp(np); + +out_uninit_rx_channels: + netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit RX channels\n"); + niu_stop_rx_channels(np); + niu_reset_rx_channels(np); + +out_uninit_tx_channels: + netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit TX channels\n"); + niu_stop_tx_channels(np); + niu_reset_tx_channels(np); + + return err; +} + +static void niu_stop_hw(struct niu *np) +{ + netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable interrupts\n"); + niu_enable_interrupts(np, 0); + + netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable RX MAC\n"); + niu_enable_rx_mac(np, 0); + + netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable IPP\n"); + niu_disable_ipp(np); + + netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Stop TX channels\n"); + niu_stop_tx_channels(np); + + netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Stop RX channels\n"); + niu_stop_rx_channels(np); + + netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Reset TX channels\n"); + niu_reset_tx_channels(np); + + netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Reset RX channels\n"); + niu_reset_rx_channels(np); +} + +static void niu_set_irq_name(struct niu *np) +{ + int port = np->port; + int i, j = 1; + + sprintf(np->irq_name[0], "%s:MAC", np->dev->name); + + if (port == 0) { + sprintf(np->irq_name[1], "%s:MIF", np->dev->name); + sprintf(np->irq_name[2], "%s:SYSERR", np->dev->name); + j = 3; + } + + for (i = 0; i < np->num_ldg - j; i++) { + if (i < np->num_rx_rings) + sprintf(np->irq_name[i+j], "%s-rx-%d", + np->dev->name, i); + else if (i < np->num_tx_rings + np->num_rx_rings) + sprintf(np->irq_name[i+j], "%s-tx-%d", np->dev->name, + i - np->num_rx_rings); + } +} + +static int niu_request_irq(struct niu *np) +{ + int i, j, err; + + niu_set_irq_name(np); + + err = 0; + for (i = 0; i < np->num_ldg; i++) { + struct niu_ldg *lp = &np->ldg[i]; + + err = request_irq(lp->irq, niu_interrupt, IRQF_SHARED, + np->irq_name[i], lp); + if (err) + goto out_free_irqs; + + } + + return 0; + +out_free_irqs: + for (j = 0; j < i; j++) { + struct niu_ldg *lp = &np->ldg[j]; + + free_irq(lp->irq, lp); + } + return err; +} + +static void niu_free_irq(struct niu *np) +{ + int i; + + for (i = 0; i < np->num_ldg; i++) { + struct niu_ldg *lp = &np->ldg[i]; + + free_irq(lp->irq, lp); + } +} + +static void niu_enable_napi(struct niu *np) +{ + int i; + + for (i = 0; i < np->num_ldg; i++) + napi_enable(&np->ldg[i].napi); +} + +static void niu_disable_napi(struct niu *np) +{ + int i; + + for (i = 0; i < np->num_ldg; i++) + napi_disable(&np->ldg[i].napi); +} + +static int niu_open(struct net_device *dev) +{ + struct niu *np = netdev_priv(dev); + int err; + + netif_carrier_off(dev); + + err = niu_alloc_channels(np); + if (err) + goto out_err; + + err = niu_enable_interrupts(np, 0); + if (err) + goto out_free_channels; + + err = niu_request_irq(np); + if (err) + goto out_free_channels; + + niu_enable_napi(np); + + spin_lock_irq(&np->lock); + + err = niu_init_hw(np); + if (!err) { + init_timer(&np->timer); + np->timer.expires = jiffies + HZ; + np->timer.data = (unsigned long) np; + np->timer.function = niu_timer; + + err = niu_enable_interrupts(np, 1); + if (err) + niu_stop_hw(np); + } + + spin_unlock_irq(&np->lock); + + if (err) { + niu_disable_napi(np); + goto out_free_irq; + } + + netif_tx_start_all_queues(dev); + + if (np->link_config.loopback_mode != LOOPBACK_DISABLED) + netif_carrier_on(dev); + + add_timer(&np->timer); + + return 0; + +out_free_irq: + niu_free_irq(np); + +out_free_channels: + niu_free_channels(np); + +out_err: + return err; +} + +static void niu_full_shutdown(struct niu *np, struct net_device *dev) +{ + cancel_work_sync(&np->reset_task); + + niu_disable_napi(np); + netif_tx_stop_all_queues(dev); + + del_timer_sync(&np->timer); + + spin_lock_irq(&np->lock); + + niu_stop_hw(np); + + spin_unlock_irq(&np->lock); +} + +static int niu_close(struct net_device *dev) +{ + struct niu *np = netdev_priv(dev); + + niu_full_shutdown(np, dev); + + niu_free_irq(np); + + niu_free_channels(np); + + niu_handle_led(np, 0); + + return 0; +} + +static void niu_sync_xmac_stats(struct niu *np) +{ + struct niu_xmac_stats *mp = &np->mac_stats.xmac; + + mp->tx_frames += nr64_mac(TXMAC_FRM_CNT); + mp->tx_bytes += nr64_mac(TXMAC_BYTE_CNT); + + mp->rx_link_faults += nr64_mac(LINK_FAULT_CNT); + mp->rx_align_errors += nr64_mac(RXMAC_ALIGN_ERR_CNT); + mp->rx_frags += nr64_mac(RXMAC_FRAG_CNT); + mp->rx_mcasts += nr64_mac(RXMAC_MC_FRM_CNT); + mp->rx_bcasts += nr64_mac(RXMAC_BC_FRM_CNT); + mp->rx_hist_cnt1 += nr64_mac(RXMAC_HIST_CNT1); + mp->rx_hist_cnt2 += nr64_mac(RXMAC_HIST_CNT2); + mp->rx_hist_cnt3 += nr64_mac(RXMAC_HIST_CNT3); + mp->rx_hist_cnt4 += nr64_mac(RXMAC_HIST_CNT4); + mp->rx_hist_cnt5 += nr64_mac(RXMAC_HIST_CNT5); + mp->rx_hist_cnt6 += nr64_mac(RXMAC_HIST_CNT6); + mp->rx_hist_cnt7 += nr64_mac(RXMAC_HIST_CNT7); + mp->rx_octets += nr64_mac(RXMAC_BT_CNT); + mp->rx_code_violations += nr64_mac(RXMAC_CD_VIO_CNT); + mp->rx_len_errors += nr64_mac(RXMAC_MPSZER_CNT); + mp->rx_crc_errors += nr64_mac(RXMAC_CRC_ER_CNT); +} + +static void niu_sync_bmac_stats(struct niu *np) +{ + struct niu_bmac_stats *mp = &np->mac_stats.bmac; + + mp->tx_bytes += nr64_mac(BTXMAC_BYTE_CNT); + mp->tx_frames += nr64_mac(BTXMAC_FRM_CNT); + + mp->rx_frames += nr64_mac(BRXMAC_FRAME_CNT); + mp->rx_align_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT); + mp->rx_crc_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT); + mp->rx_len_errors += nr64_mac(BRXMAC_CODE_VIOL_ERR_CNT); +} + +static void niu_sync_mac_stats(struct niu *np) +{ + if (np->flags & NIU_FLAGS_XMAC) + niu_sync_xmac_stats(np); + else + niu_sync_bmac_stats(np); +} + +static void niu_get_rx_stats(struct niu *np, + struct rtnl_link_stats64 *stats) +{ + u64 pkts, dropped, errors, bytes; + struct rx_ring_info *rx_rings; + int i; + + pkts = dropped = errors = bytes = 0; + + rx_rings = ACCESS_ONCE(np->rx_rings); + if (!rx_rings) + goto no_rings; + + for (i = 0; i < np->num_rx_rings; i++) { + struct rx_ring_info *rp = &rx_rings[i]; + + niu_sync_rx_discard_stats(np, rp, 0); + + pkts += rp->rx_packets; + bytes += rp->rx_bytes; + dropped += rp->rx_dropped; + errors += rp->rx_errors; + } + +no_rings: + stats->rx_packets = pkts; + stats->rx_bytes = bytes; + stats->rx_dropped = dropped; + stats->rx_errors = errors; +} + +static void niu_get_tx_stats(struct niu *np, + struct rtnl_link_stats64 *stats) +{ + u64 pkts, errors, bytes; + struct tx_ring_info *tx_rings; + int i; + + pkts = errors = bytes = 0; + + tx_rings = ACCESS_ONCE(np->tx_rings); + if (!tx_rings) + goto no_rings; + + for (i = 0; i < np->num_tx_rings; i++) { + struct tx_ring_info *rp = &tx_rings[i]; + + pkts += rp->tx_packets; + bytes += rp->tx_bytes; + errors += rp->tx_errors; + } + +no_rings: + stats->tx_packets = pkts; + stats->tx_bytes = bytes; + stats->tx_errors = errors; +} + +static struct rtnl_link_stats64 *niu_get_stats(struct net_device *dev, + struct rtnl_link_stats64 *stats) +{ + struct niu *np = netdev_priv(dev); + + if (netif_running(dev)) { + niu_get_rx_stats(np, stats); + niu_get_tx_stats(np, stats); + } + + return stats; +} + +static void niu_load_hash_xmac(struct niu *np, u16 *hash) +{ + int i; + + for (i = 0; i < 16; i++) + nw64_mac(XMAC_HASH_TBL(i), hash[i]); +} + +static void niu_load_hash_bmac(struct niu *np, u16 *hash) +{ + int i; + + for (i = 0; i < 16; i++) + nw64_mac(BMAC_HASH_TBL(i), hash[i]); +} + +static void niu_load_hash(struct niu *np, u16 *hash) +{ + if (np->flags & NIU_FLAGS_XMAC) + niu_load_hash_xmac(np, hash); + else + niu_load_hash_bmac(np, hash); +} + +static void niu_set_rx_mode(struct net_device *dev) +{ + struct niu *np = netdev_priv(dev); + int i, alt_cnt, err; + struct netdev_hw_addr *ha; + unsigned long flags; + u16 hash[16] = { 0, }; + + spin_lock_irqsave(&np->lock, flags); + niu_enable_rx_mac(np, 0); + + np->flags &= ~(NIU_FLAGS_MCAST | NIU_FLAGS_PROMISC); + if (dev->flags & IFF_PROMISC) + np->flags |= NIU_FLAGS_PROMISC; + if ((dev->flags & IFF_ALLMULTI) || (!netdev_mc_empty(dev))) + np->flags |= NIU_FLAGS_MCAST; + + alt_cnt = netdev_uc_count(dev); + if (alt_cnt > niu_num_alt_addr(np)) { + alt_cnt = 0; + np->flags |= NIU_FLAGS_PROMISC; + } + + if (alt_cnt) { + int index = 0; + + netdev_for_each_uc_addr(ha, dev) { + err = niu_set_alt_mac(np, index, ha->addr); + if (err) + netdev_warn(dev, "Error %d adding alt mac %d\n", + err, index); + err = niu_enable_alt_mac(np, index, 1); + if (err) + netdev_warn(dev, "Error %d enabling alt mac %d\n", + err, index); + + index++; + } + } else { + int alt_start; + if (np->flags & NIU_FLAGS_XMAC) + alt_start = 0; + else + alt_start = 1; + for (i = alt_start; i < niu_num_alt_addr(np); i++) { + err = niu_enable_alt_mac(np, i, 0); + if (err) + netdev_warn(dev, "Error %d disabling alt mac %d\n", + err, i); + } + } + if (dev->flags & IFF_ALLMULTI) { + for (i = 0; i < 16; i++) + hash[i] = 0xffff; + } else if (!netdev_mc_empty(dev)) { + netdev_for_each_mc_addr(ha, dev) { + u32 crc = ether_crc_le(ETH_ALEN, ha->addr); + + crc >>= 24; + hash[crc >> 4] |= (1 << (15 - (crc & 0xf))); + } + } + + if (np->flags & NIU_FLAGS_MCAST) + niu_load_hash(np, hash); + + niu_enable_rx_mac(np, 1); + spin_unlock_irqrestore(&np->lock, flags); +} + +static int niu_set_mac_addr(struct net_device *dev, void *p) +{ + struct niu *np = netdev_priv(dev); + struct sockaddr *addr = p; + unsigned long flags; + + if (!is_valid_ether_addr(addr->sa_data)) + return -EADDRNOTAVAIL; + + memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); + + if (!netif_running(dev)) + return 0; + + spin_lock_irqsave(&np->lock, flags); + niu_enable_rx_mac(np, 0); + niu_set_primary_mac(np, dev->dev_addr); + niu_enable_rx_mac(np, 1); + spin_unlock_irqrestore(&np->lock, flags); + + return 0; +} + +static int niu_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) +{ + return -EOPNOTSUPP; +} + +static void niu_netif_stop(struct niu *np) +{ + np->dev->trans_start = jiffies; /* prevent tx timeout */ + + niu_disable_napi(np); + + netif_tx_disable(np->dev); +} + +static void niu_netif_start(struct niu *np) +{ + /* NOTE: unconditional netif_wake_queue is only appropriate + * so long as all callers are assured to have free tx slots + * (such as after niu_init_hw). + */ + netif_tx_wake_all_queues(np->dev); + + niu_enable_napi(np); + + niu_enable_interrupts(np, 1); +} + +static void niu_reset_buffers(struct niu *np) +{ + int i, j, k, err; + + if (np->rx_rings) { + for (i = 0; i < np->num_rx_rings; i++) { + struct rx_ring_info *rp = &np->rx_rings[i]; + + for (j = 0, k = 0; j < MAX_RBR_RING_SIZE; j++) { + struct page *page; + + page = rp->rxhash[j]; + while (page) { + struct page *next = + (struct page *) page->mapping; + u64 base = page->index; + base = base >> RBR_DESCR_ADDR_SHIFT; + rp->rbr[k++] = cpu_to_le32(base); + page = next; + } + } + for (; k < MAX_RBR_RING_SIZE; k++) { + err = niu_rbr_add_page(np, rp, GFP_ATOMIC, k); + if (unlikely(err)) + break; + } + + rp->rbr_index = rp->rbr_table_size - 1; + rp->rcr_index = 0; + rp->rbr_pending = 0; + rp->rbr_refill_pending = 0; + } + } + if (np->tx_rings) { + for (i = 0; i < np->num_tx_rings; i++) { + struct tx_ring_info *rp = &np->tx_rings[i]; + + for (j = 0; j < MAX_TX_RING_SIZE; j++) { + if (rp->tx_buffs[j].skb) + (void) release_tx_packet(np, rp, j); + } + + rp->pending = MAX_TX_RING_SIZE; + rp->prod = 0; + rp->cons = 0; + rp->wrap_bit = 0; + } + } +} + +static void niu_reset_task(struct work_struct *work) +{ + struct niu *np = container_of(work, struct niu, reset_task); + unsigned long flags; + int err; + + spin_lock_irqsave(&np->lock, flags); + if (!netif_running(np->dev)) { + spin_unlock_irqrestore(&np->lock, flags); + return; + } + + spin_unlock_irqrestore(&np->lock, flags); + + del_timer_sync(&np->timer); + + niu_netif_stop(np); + + spin_lock_irqsave(&np->lock, flags); + + niu_stop_hw(np); + + spin_unlock_irqrestore(&np->lock, flags); + + niu_reset_buffers(np); + + spin_lock_irqsave(&np->lock, flags); + + err = niu_init_hw(np); + if (!err) { + np->timer.expires = jiffies + HZ; + add_timer(&np->timer); + niu_netif_start(np); + } + + spin_unlock_irqrestore(&np->lock, flags); +} + +static void niu_tx_timeout(struct net_device *dev) +{ + struct niu *np = netdev_priv(dev); + + dev_err(np->device, "%s: Transmit timed out, resetting\n", + dev->name); + + schedule_work(&np->reset_task); +} + +static void niu_set_txd(struct tx_ring_info *rp, int index, + u64 mapping, u64 len, u64 mark, + u64 n_frags) +{ + __le64 *desc = &rp->descr[index]; + + *desc = cpu_to_le64(mark | + (n_frags << TX_DESC_NUM_PTR_SHIFT) | + (len << TX_DESC_TR_LEN_SHIFT) | + (mapping & TX_DESC_SAD)); +} + +static u64 niu_compute_tx_flags(struct sk_buff *skb, struct ethhdr *ehdr, + u64 pad_bytes, u64 len) +{ + u16 eth_proto, eth_proto_inner; + u64 csum_bits, l3off, ihl, ret; + u8 ip_proto; + int ipv6; + + eth_proto = be16_to_cpu(ehdr->h_proto); + eth_proto_inner = eth_proto; + if (eth_proto == ETH_P_8021Q) { + struct vlan_ethhdr *vp = (struct vlan_ethhdr *) ehdr; + __be16 val = vp->h_vlan_encapsulated_proto; + + eth_proto_inner = be16_to_cpu(val); + } + + ipv6 = ihl = 0; + switch (skb->protocol) { + case cpu_to_be16(ETH_P_IP): + ip_proto = ip_hdr(skb)->protocol; + ihl = ip_hdr(skb)->ihl; + break; + case cpu_to_be16(ETH_P_IPV6): + ip_proto = ipv6_hdr(skb)->nexthdr; + ihl = (40 >> 2); + ipv6 = 1; + break; + default: + ip_proto = ihl = 0; + break; + } + + csum_bits = TXHDR_CSUM_NONE; + if (skb->ip_summed == CHECKSUM_PARTIAL) { + u64 start, stuff; + + csum_bits = (ip_proto == IPPROTO_TCP ? + TXHDR_CSUM_TCP : + (ip_proto == IPPROTO_UDP ? + TXHDR_CSUM_UDP : TXHDR_CSUM_SCTP)); + + start = skb_checksum_start_offset(skb) - + (pad_bytes + sizeof(struct tx_pkt_hdr)); + stuff = start + skb->csum_offset; + + csum_bits |= (start / 2) << TXHDR_L4START_SHIFT; + csum_bits |= (stuff / 2) << TXHDR_L4STUFF_SHIFT; + } + + l3off = skb_network_offset(skb) - + (pad_bytes + sizeof(struct tx_pkt_hdr)); + + ret = (((pad_bytes / 2) << TXHDR_PAD_SHIFT) | + (len << TXHDR_LEN_SHIFT) | + ((l3off / 2) << TXHDR_L3START_SHIFT) | + (ihl << TXHDR_IHL_SHIFT) | + ((eth_proto_inner < ETH_P_802_3_MIN) ? TXHDR_LLC : 0) | + ((eth_proto == ETH_P_8021Q) ? TXHDR_VLAN : 0) | + (ipv6 ? TXHDR_IP_VER : 0) | + csum_bits); + + return ret; +} + +static netdev_tx_t niu_start_xmit(struct sk_buff *skb, + struct net_device *dev) +{ + struct niu *np = netdev_priv(dev); + unsigned long align, headroom; + struct netdev_queue *txq; + struct tx_ring_info *rp; + struct tx_pkt_hdr *tp; + unsigned int len, nfg; + struct ethhdr *ehdr; + int prod, i, tlen; + u64 mapping, mrk; + + i = skb_get_queue_mapping(skb); + rp = &np->tx_rings[i]; + txq = netdev_get_tx_queue(dev, i); + + if (niu_tx_avail(rp) <= (skb_shinfo(skb)->nr_frags + 1)) { + netif_tx_stop_queue(txq); + dev_err(np->device, "%s: BUG! Tx ring full when queue awake!\n", dev->name); + rp->tx_errors++; + return NETDEV_TX_BUSY; + } + + if (eth_skb_pad(skb)) + goto out; + + len = sizeof(struct tx_pkt_hdr) + 15; + if (skb_headroom(skb) < len) { + struct sk_buff *skb_new; + + skb_new = skb_realloc_headroom(skb, len); + if (!skb_new) { + rp->tx_errors++; + goto out_drop; + } + kfree_skb(skb); + skb = skb_new; + } else + skb_orphan(skb); + + align = ((unsigned long) skb->data & (16 - 1)); + headroom = align + sizeof(struct tx_pkt_hdr); + + ehdr = (struct ethhdr *) skb->data; + tp = (struct tx_pkt_hdr *) skb_push(skb, headroom); + + len = skb->len - sizeof(struct tx_pkt_hdr); + tp->flags = cpu_to_le64(niu_compute_tx_flags(skb, ehdr, align, len)); + tp->resv = 0; + + len = skb_headlen(skb); + mapping = np->ops->map_single(np->device, skb->data, + len, DMA_TO_DEVICE); + + prod = rp->prod; + + rp->tx_buffs[prod].skb = skb; + rp->tx_buffs[prod].mapping = mapping; + + mrk = TX_DESC_SOP; + if (++rp->mark_counter == rp->mark_freq) { + rp->mark_counter = 0; + mrk |= TX_DESC_MARK; + rp->mark_pending++; + } + + tlen = len; + nfg = skb_shinfo(skb)->nr_frags; + while (tlen > 0) { + tlen -= MAX_TX_DESC_LEN; + nfg++; + } + + while (len > 0) { + unsigned int this_len = len; + + if (this_len > MAX_TX_DESC_LEN) + this_len = MAX_TX_DESC_LEN; + + niu_set_txd(rp, prod, mapping, this_len, mrk, nfg); + mrk = nfg = 0; + + prod = NEXT_TX(rp, prod); + mapping += this_len; + len -= this_len; + } + + for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { + const skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; + + len = skb_frag_size(frag); + mapping = np->ops->map_page(np->device, skb_frag_page(frag), + frag->page_offset, len, + DMA_TO_DEVICE); + + rp->tx_buffs[prod].skb = NULL; + rp->tx_buffs[prod].mapping = mapping; + + niu_set_txd(rp, prod, mapping, len, 0, 0); + + prod = NEXT_TX(rp, prod); + } + + if (prod < rp->prod) + rp->wrap_bit ^= TX_RING_KICK_WRAP; + rp->prod = prod; + + nw64(TX_RING_KICK(rp->tx_channel), rp->wrap_bit | (prod << 3)); + + if (unlikely(niu_tx_avail(rp) <= (MAX_SKB_FRAGS + 1))) { + netif_tx_stop_queue(txq); + if (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)) + netif_tx_wake_queue(txq); + } + +out: + return NETDEV_TX_OK; + +out_drop: + rp->tx_errors++; + kfree_skb(skb); + goto out; +} + +static int niu_change_mtu(struct net_device *dev, int new_mtu) +{ + struct niu *np = netdev_priv(dev); + int err, orig_jumbo, new_jumbo; + + if (new_mtu < 68 || new_mtu > NIU_MAX_MTU) + return -EINVAL; + + orig_jumbo = (dev->mtu > ETH_DATA_LEN); + new_jumbo = (new_mtu > ETH_DATA_LEN); + + dev->mtu = new_mtu; + + if (!netif_running(dev) || + (orig_jumbo == new_jumbo)) + return 0; + + niu_full_shutdown(np, dev); + + niu_free_channels(np); + + niu_enable_napi(np); + + err = niu_alloc_channels(np); + if (err) + return err; + + spin_lock_irq(&np->lock); + + err = niu_init_hw(np); + if (!err) { + init_timer(&np->timer); + np->timer.expires = jiffies + HZ; + np->timer.data = (unsigned long) np; + np->timer.function = niu_timer; + + err = niu_enable_interrupts(np, 1); + if (err) + niu_stop_hw(np); + } + + spin_unlock_irq(&np->lock); + + if (!err) { + netif_tx_start_all_queues(dev); + if (np->link_config.loopback_mode != LOOPBACK_DISABLED) + netif_carrier_on(dev); + + add_timer(&np->timer); + } + + return err; +} + +static void niu_get_drvinfo(struct net_device *dev, + struct ethtool_drvinfo *info) +{ + struct niu *np = netdev_priv(dev); + struct niu_vpd *vpd = &np->vpd; + + strlcpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver)); + strlcpy(info->version, DRV_MODULE_VERSION, sizeof(info->version)); + snprintf(info->fw_version, sizeof(info->fw_version), "%d.%d", + vpd->fcode_major, vpd->fcode_minor); + if (np->parent->plat_type != PLAT_TYPE_NIU) + strlcpy(info->bus_info, pci_name(np->pdev), + sizeof(info->bus_info)); +} + +static int niu_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) +{ + struct niu *np = netdev_priv(dev); + struct niu_link_config *lp; + + lp = &np->link_config; + + memset(cmd, 0, sizeof(*cmd)); + cmd->phy_address = np->phy_addr; + cmd->supported = lp->supported; + cmd->advertising = lp->active_advertising; + cmd->autoneg = lp->active_autoneg; + ethtool_cmd_speed_set(cmd, lp->active_speed); + cmd->duplex = lp->active_duplex; + cmd->port = (np->flags & NIU_FLAGS_FIBER) ? PORT_FIBRE : PORT_TP; + cmd->transceiver = (np->flags & NIU_FLAGS_XCVR_SERDES) ? + XCVR_EXTERNAL : XCVR_INTERNAL; + + return 0; +} + +static int niu_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) +{ + struct niu *np = netdev_priv(dev); + struct niu_link_config *lp = &np->link_config; + + lp->advertising = cmd->advertising; + lp->speed = ethtool_cmd_speed(cmd); + lp->duplex = cmd->duplex; + lp->autoneg = cmd->autoneg; + return niu_init_link(np); +} + +static u32 niu_get_msglevel(struct net_device *dev) +{ + struct niu *np = netdev_priv(dev); + return np->msg_enable; +} + +static void niu_set_msglevel(struct net_device *dev, u32 value) +{ + struct niu *np = netdev_priv(dev); + np->msg_enable = value; +} + +static int niu_nway_reset(struct net_device *dev) +{ + struct niu *np = netdev_priv(dev); + + if (np->link_config.autoneg) + return niu_init_link(np); + + return 0; +} + +static int niu_get_eeprom_len(struct net_device *dev) +{ + struct niu *np = netdev_priv(dev); + + return np->eeprom_len; +} + +static int niu_get_eeprom(struct net_device *dev, + struct ethtool_eeprom *eeprom, u8 *data) +{ + struct niu *np = netdev_priv(dev); + u32 offset, len, val; + + offset = eeprom->offset; + len = eeprom->len; + + if (offset + len < offset) + return -EINVAL; + if (offset >= np->eeprom_len) + return -EINVAL; + if (offset + len > np->eeprom_len) + len = eeprom->len = np->eeprom_len - offset; + + if (offset & 3) { + u32 b_offset, b_count; + + b_offset = offset & 3; + b_count = 4 - b_offset; + if (b_count > len) + b_count = len; + + val = nr64(ESPC_NCR((offset - b_offset) / 4)); + memcpy(data, ((char *)&val) + b_offset, b_count); + data += b_count; + len -= b_count; + offset += b_count; + } + while (len >= 4) { + val = nr64(ESPC_NCR(offset / 4)); + memcpy(data, &val, 4); + data += 4; + len -= 4; + offset += 4; + } + if (len) { + val = nr64(ESPC_NCR(offset / 4)); + memcpy(data, &val, len); + } + return 0; +} + +static void niu_ethflow_to_l3proto(int flow_type, u8 *pid) +{ + switch (flow_type) { + case TCP_V4_FLOW: + case TCP_V6_FLOW: + *pid = IPPROTO_TCP; + break; + case UDP_V4_FLOW: + case UDP_V6_FLOW: + *pid = IPPROTO_UDP; + break; + case SCTP_V4_FLOW: + case SCTP_V6_FLOW: + *pid = IPPROTO_SCTP; + break; + case AH_V4_FLOW: + case AH_V6_FLOW: + *pid = IPPROTO_AH; + break; + case ESP_V4_FLOW: + case ESP_V6_FLOW: + *pid = IPPROTO_ESP; + break; + default: + *pid = 0; + break; + } +} + +static int niu_class_to_ethflow(u64 class, int *flow_type) +{ + switch (class) { + case CLASS_CODE_TCP_IPV4: + *flow_type = TCP_V4_FLOW; + break; + case CLASS_CODE_UDP_IPV4: + *flow_type = UDP_V4_FLOW; + break; + case CLASS_CODE_AH_ESP_IPV4: + *flow_type = AH_V4_FLOW; + break; + case CLASS_CODE_SCTP_IPV4: + *flow_type = SCTP_V4_FLOW; + break; + case CLASS_CODE_TCP_IPV6: + *flow_type = TCP_V6_FLOW; + break; + case CLASS_CODE_UDP_IPV6: + *flow_type = UDP_V6_FLOW; + break; + case CLASS_CODE_AH_ESP_IPV6: + *flow_type = AH_V6_FLOW; + break; + case CLASS_CODE_SCTP_IPV6: + *flow_type = SCTP_V6_FLOW; + break; + case CLASS_CODE_USER_PROG1: + case CLASS_CODE_USER_PROG2: + case CLASS_CODE_USER_PROG3: + case CLASS_CODE_USER_PROG4: + *flow_type = IP_USER_FLOW; + break; + default: + return -EINVAL; + } + + return 0; +} + +static int niu_ethflow_to_class(int flow_type, u64 *class) +{ + switch (flow_type) { + case TCP_V4_FLOW: + *class = CLASS_CODE_TCP_IPV4; + break; + case UDP_V4_FLOW: + *class = CLASS_CODE_UDP_IPV4; + break; + case AH_ESP_V4_FLOW: + case AH_V4_FLOW: + case ESP_V4_FLOW: + *class = CLASS_CODE_AH_ESP_IPV4; + break; + case SCTP_V4_FLOW: + *class = CLASS_CODE_SCTP_IPV4; + break; + case TCP_V6_FLOW: + *class = CLASS_CODE_TCP_IPV6; + break; + case UDP_V6_FLOW: + *class = CLASS_CODE_UDP_IPV6; + break; + case AH_ESP_V6_FLOW: + case AH_V6_FLOW: + case ESP_V6_FLOW: + *class = CLASS_CODE_AH_ESP_IPV6; + break; + case SCTP_V6_FLOW: + *class = CLASS_CODE_SCTP_IPV6; + break; + default: + return 0; + } + + return 1; +} + +static u64 niu_flowkey_to_ethflow(u64 flow_key) +{ + u64 ethflow = 0; + + if (flow_key & FLOW_KEY_L2DA) + ethflow |= RXH_L2DA; + if (flow_key & FLOW_KEY_VLAN) + ethflow |= RXH_VLAN; + if (flow_key & FLOW_KEY_IPSA) + ethflow |= RXH_IP_SRC; + if (flow_key & FLOW_KEY_IPDA) + ethflow |= RXH_IP_DST; + if (flow_key & FLOW_KEY_PROTO) + ethflow |= RXH_L3_PROTO; + if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT)) + ethflow |= RXH_L4_B_0_1; + if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT)) + ethflow |= RXH_L4_B_2_3; + + return ethflow; + +} + +static int niu_ethflow_to_flowkey(u64 ethflow, u64 *flow_key) +{ + u64 key = 0; + + if (ethflow & RXH_L2DA) + key |= FLOW_KEY_L2DA; + if (ethflow & RXH_VLAN) + key |= FLOW_KEY_VLAN; + if (ethflow & RXH_IP_SRC) + key |= FLOW_KEY_IPSA; + if (ethflow & RXH_IP_DST) + key |= FLOW_KEY_IPDA; + if (ethflow & RXH_L3_PROTO) + key |= FLOW_KEY_PROTO; + if (ethflow & RXH_L4_B_0_1) + key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT); + if (ethflow & RXH_L4_B_2_3) + key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT); + + *flow_key = key; + + return 1; + +} + +static int niu_get_hash_opts(struct niu *np, struct ethtool_rxnfc *nfc) +{ + u64 class; + + nfc->data = 0; + + if (!niu_ethflow_to_class(nfc->flow_type, &class)) + return -EINVAL; + + if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] & + TCAM_KEY_DISC) + nfc->data = RXH_DISCARD; + else + nfc->data = niu_flowkey_to_ethflow(np->parent->flow_key[class - + CLASS_CODE_USER_PROG1]); + return 0; +} + +static void niu_get_ip4fs_from_tcam_key(struct niu_tcam_entry *tp, + struct ethtool_rx_flow_spec *fsp) +{ + u32 tmp; + u16 prt; + + tmp = (tp->key[3] & TCAM_V4KEY3_SADDR) >> TCAM_V4KEY3_SADDR_SHIFT; + fsp->h_u.tcp_ip4_spec.ip4src = cpu_to_be32(tmp); + + tmp = (tp->key[3] & TCAM_V4KEY3_DADDR) >> TCAM_V4KEY3_DADDR_SHIFT; + fsp->h_u.tcp_ip4_spec.ip4dst = cpu_to_be32(tmp); + + tmp = (tp->key_mask[3] & TCAM_V4KEY3_SADDR) >> TCAM_V4KEY3_SADDR_SHIFT; + fsp->m_u.tcp_ip4_spec.ip4src = cpu_to_be32(tmp); + + tmp = (tp->key_mask[3] & TCAM_V4KEY3_DADDR) >> TCAM_V4KEY3_DADDR_SHIFT; + fsp->m_u.tcp_ip4_spec.ip4dst = cpu_to_be32(tmp); + + fsp->h_u.tcp_ip4_spec.tos = (tp->key[2] & TCAM_V4KEY2_TOS) >> + TCAM_V4KEY2_TOS_SHIFT; + fsp->m_u.tcp_ip4_spec.tos = (tp->key_mask[2] & TCAM_V4KEY2_TOS) >> + TCAM_V4KEY2_TOS_SHIFT; + + switch (fsp->flow_type) { + case TCP_V4_FLOW: + case UDP_V4_FLOW: + case SCTP_V4_FLOW: + prt = ((tp->key[2] & TCAM_V4KEY2_PORT_SPI) >> + TCAM_V4KEY2_PORT_SPI_SHIFT) >> 16; + fsp->h_u.tcp_ip4_spec.psrc = cpu_to_be16(prt); + + prt = ((tp->key[2] & TCAM_V4KEY2_PORT_SPI) >> + TCAM_V4KEY2_PORT_SPI_SHIFT) & 0xffff; + fsp->h_u.tcp_ip4_spec.pdst = cpu_to_be16(prt); + + prt = ((tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >> + TCAM_V4KEY2_PORT_SPI_SHIFT) >> 16; + fsp->m_u.tcp_ip4_spec.psrc = cpu_to_be16(prt); + + prt = ((tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >> + TCAM_V4KEY2_PORT_SPI_SHIFT) & 0xffff; + fsp->m_u.tcp_ip4_spec.pdst = cpu_to_be16(prt); + break; + case AH_V4_FLOW: + case ESP_V4_FLOW: + tmp = (tp->key[2] & TCAM_V4KEY2_PORT_SPI) >> + TCAM_V4KEY2_PORT_SPI_SHIFT; + fsp->h_u.ah_ip4_spec.spi = cpu_to_be32(tmp); + + tmp = (tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >> + TCAM_V4KEY2_PORT_SPI_SHIFT; + fsp->m_u.ah_ip4_spec.spi = cpu_to_be32(tmp); + break; + case IP_USER_FLOW: + tmp = (tp->key[2] & TCAM_V4KEY2_PORT_SPI) >> + TCAM_V4KEY2_PORT_SPI_SHIFT; + fsp->h_u.usr_ip4_spec.l4_4_bytes = cpu_to_be32(tmp); + + tmp = (tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >> + TCAM_V4KEY2_PORT_SPI_SHIFT; + fsp->m_u.usr_ip4_spec.l4_4_bytes = cpu_to_be32(tmp); + + fsp->h_u.usr_ip4_spec.proto = + (tp->key[2] & TCAM_V4KEY2_PROTO) >> + TCAM_V4KEY2_PROTO_SHIFT; + fsp->m_u.usr_ip4_spec.proto = + (tp->key_mask[2] & TCAM_V4KEY2_PROTO) >> + TCAM_V4KEY2_PROTO_SHIFT; + + fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4; + break; + default: + break; + } +} + +static int niu_get_ethtool_tcam_entry(struct niu *np, + struct ethtool_rxnfc *nfc) +{ + struct niu_parent *parent = np->parent; + struct niu_tcam_entry *tp; + struct ethtool_rx_flow_spec *fsp = &nfc->fs; + u16 idx; + u64 class; + int ret = 0; + + idx = tcam_get_index(np, (u16)nfc->fs.location); + + tp = &parent->tcam[idx]; + if (!tp->valid) { + netdev_info(np->dev, "niu%d: entry [%d] invalid for idx[%d]\n", + parent->index, (u16)nfc->fs.location, idx); + return -EINVAL; + } + + /* fill the flow spec entry */ + class = (tp->key[0] & TCAM_V4KEY0_CLASS_CODE) >> + TCAM_V4KEY0_CLASS_CODE_SHIFT; + ret = niu_class_to_ethflow(class, &fsp->flow_type); + if (ret < 0) { + netdev_info(np->dev, "niu%d: niu_class_to_ethflow failed\n", + parent->index); + goto out; + } + + if (fsp->flow_type == AH_V4_FLOW || fsp->flow_type == AH_V6_FLOW) { + u32 proto = (tp->key[2] & TCAM_V4KEY2_PROTO) >> + TCAM_V4KEY2_PROTO_SHIFT; + if (proto == IPPROTO_ESP) { + if (fsp->flow_type == AH_V4_FLOW) + fsp->flow_type = ESP_V4_FLOW; + else + fsp->flow_type = ESP_V6_FLOW; + } + } + + switch (fsp->flow_type) { + case TCP_V4_FLOW: + case UDP_V4_FLOW: + case SCTP_V4_FLOW: + case AH_V4_FLOW: + case ESP_V4_FLOW: + niu_get_ip4fs_from_tcam_key(tp, fsp); + break; + case TCP_V6_FLOW: + case UDP_V6_FLOW: + case SCTP_V6_FLOW: + case AH_V6_FLOW: + case ESP_V6_FLOW: + /* Not yet implemented */ + ret = -EINVAL; + break; + case IP_USER_FLOW: + niu_get_ip4fs_from_tcam_key(tp, fsp); + break; + default: + ret = -EINVAL; + break; + } + + if (ret < 0) + goto out; + + if (tp->assoc_data & TCAM_ASSOCDATA_DISC) + fsp->ring_cookie = RX_CLS_FLOW_DISC; + else + fsp->ring_cookie = (tp->assoc_data & TCAM_ASSOCDATA_OFFSET) >> + TCAM_ASSOCDATA_OFFSET_SHIFT; + + /* put the tcam size here */ + nfc->data = tcam_get_size(np); +out: + return ret; +} + +static int niu_get_ethtool_tcam_all(struct niu *np, + struct ethtool_rxnfc *nfc, + u32 *rule_locs) +{ + struct niu_parent *parent = np->parent; + struct niu_tcam_entry *tp; + int i, idx, cnt; + unsigned long flags; + int ret = 0; + + /* put the tcam size here */ + nfc->data = tcam_get_size(np); + + niu_lock_parent(np, flags); + for (cnt = 0, i = 0; i < nfc->data; i++) { + idx = tcam_get_index(np, i); + tp = &parent->tcam[idx]; + if (!tp->valid) + continue; + if (cnt == nfc->rule_cnt) { + ret = -EMSGSIZE; + break; + } + rule_locs[cnt] = i; + cnt++; + } + niu_unlock_parent(np, flags); + + nfc->rule_cnt = cnt; + + return ret; +} + +static int niu_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd, + u32 *rule_locs) +{ + struct niu *np = netdev_priv(dev); + int ret = 0; + + switch (cmd->cmd) { + case ETHTOOL_GRXFH: + ret = niu_get_hash_opts(np, cmd); + break; + case ETHTOOL_GRXRINGS: + cmd->data = np->num_rx_rings; + break; + case ETHTOOL_GRXCLSRLCNT: + cmd->rule_cnt = tcam_get_valid_entry_cnt(np); + break; + case ETHTOOL_GRXCLSRULE: + ret = niu_get_ethtool_tcam_entry(np, cmd); + break; + case ETHTOOL_GRXCLSRLALL: + ret = niu_get_ethtool_tcam_all(np, cmd, rule_locs); + break; + default: + ret = -EINVAL; + break; + } + + return ret; +} + +static int niu_set_hash_opts(struct niu *np, struct ethtool_rxnfc *nfc) +{ + u64 class; + u64 flow_key = 0; + unsigned long flags; + + if (!niu_ethflow_to_class(nfc->flow_type, &class)) + return -EINVAL; + + if (class < CLASS_CODE_USER_PROG1 || + class > CLASS_CODE_SCTP_IPV6) + return -EINVAL; + + if (nfc->data & RXH_DISCARD) { + niu_lock_parent(np, flags); + flow_key = np->parent->tcam_key[class - + CLASS_CODE_USER_PROG1]; + flow_key |= TCAM_KEY_DISC; + nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1), flow_key); + np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] = flow_key; + niu_unlock_parent(np, flags); + return 0; + } else { + /* Discard was set before, but is not set now */ + if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] & + TCAM_KEY_DISC) { + niu_lock_parent(np, flags); + flow_key = np->parent->tcam_key[class - + CLASS_CODE_USER_PROG1]; + flow_key &= ~TCAM_KEY_DISC; + nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1), + flow_key); + np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] = + flow_key; + niu_unlock_parent(np, flags); + } + } + + if (!niu_ethflow_to_flowkey(nfc->data, &flow_key)) + return -EINVAL; + + niu_lock_parent(np, flags); + nw64(FLOW_KEY(class - CLASS_CODE_USER_PROG1), flow_key); + np->parent->flow_key[class - CLASS_CODE_USER_PROG1] = flow_key; + niu_unlock_parent(np, flags); + + return 0; +} + +static void niu_get_tcamkey_from_ip4fs(struct ethtool_rx_flow_spec *fsp, + struct niu_tcam_entry *tp, + int l2_rdc_tab, u64 class) +{ + u8 pid = 0; + u32 sip, dip, sipm, dipm, spi, spim; + u16 sport, dport, spm, dpm; + + sip = be32_to_cpu(fsp->h_u.tcp_ip4_spec.ip4src); + sipm = be32_to_cpu(fsp->m_u.tcp_ip4_spec.ip4src); + dip = be32_to_cpu(fsp->h_u.tcp_ip4_spec.ip4dst); + dipm = be32_to_cpu(fsp->m_u.tcp_ip4_spec.ip4dst); + + tp->key[0] = class << TCAM_V4KEY0_CLASS_CODE_SHIFT; + tp->key_mask[0] = TCAM_V4KEY0_CLASS_CODE; + tp->key[1] = (u64)l2_rdc_tab << TCAM_V4KEY1_L2RDCNUM_SHIFT; + tp->key_mask[1] = TCAM_V4KEY1_L2RDCNUM; + + tp->key[3] = (u64)sip << TCAM_V4KEY3_SADDR_SHIFT; + tp->key[3] |= dip; + + tp->key_mask[3] = (u64)sipm << TCAM_V4KEY3_SADDR_SHIFT; + tp->key_mask[3] |= dipm; + + tp->key[2] |= ((u64)fsp->h_u.tcp_ip4_spec.tos << + TCAM_V4KEY2_TOS_SHIFT); + tp->key_mask[2] |= ((u64)fsp->m_u.tcp_ip4_spec.tos << + TCAM_V4KEY2_TOS_SHIFT); + switch (fsp->flow_type) { + case TCP_V4_FLOW: + case UDP_V4_FLOW: + case SCTP_V4_FLOW: + sport = be16_to_cpu(fsp->h_u.tcp_ip4_spec.psrc); + spm = be16_to_cpu(fsp->m_u.tcp_ip4_spec.psrc); + dport = be16_to_cpu(fsp->h_u.tcp_ip4_spec.pdst); + dpm = be16_to_cpu(fsp->m_u.tcp_ip4_spec.pdst); + + tp->key[2] |= (((u64)sport << 16) | dport); + tp->key_mask[2] |= (((u64)spm << 16) | dpm); + niu_ethflow_to_l3proto(fsp->flow_type, &pid); + break; + case AH_V4_FLOW: + case ESP_V4_FLOW: + spi = be32_to_cpu(fsp->h_u.ah_ip4_spec.spi); + spim = be32_to_cpu(fsp->m_u.ah_ip4_spec.spi); + + tp->key[2] |= spi; + tp->key_mask[2] |= spim; + niu_ethflow_to_l3proto(fsp->flow_type, &pid); + break; + case IP_USER_FLOW: + spi = be32_to_cpu(fsp->h_u.usr_ip4_spec.l4_4_bytes); + spim = be32_to_cpu(fsp->m_u.usr_ip4_spec.l4_4_bytes); + + tp->key[2] |= spi; + tp->key_mask[2] |= spim; + pid = fsp->h_u.usr_ip4_spec.proto; + break; + default: + break; + } + + tp->key[2] |= ((u64)pid << TCAM_V4KEY2_PROTO_SHIFT); + if (pid) { + tp->key_mask[2] |= TCAM_V4KEY2_PROTO; + } +} + +static int niu_add_ethtool_tcam_entry(struct niu *np, + struct ethtool_rxnfc *nfc) +{ + struct niu_parent *parent = np->parent; + struct niu_tcam_entry *tp; + struct ethtool_rx_flow_spec *fsp = &nfc->fs; + struct niu_rdc_tables *rdc_table = &parent->rdc_group_cfg[np->port]; + int l2_rdc_table = rdc_table->first_table_num; + u16 idx; + u64 class; + unsigned long flags; + int err, ret; + + ret = 0; + + idx = nfc->fs.location; + if (idx >= tcam_get_size(np)) + return -EINVAL; + + if (fsp->flow_type == IP_USER_FLOW) { + int i; + int add_usr_cls = 0; + struct ethtool_usrip4_spec *uspec = &fsp->h_u.usr_ip4_spec; + struct ethtool_usrip4_spec *umask = &fsp->m_u.usr_ip4_spec; + + if (uspec->ip_ver != ETH_RX_NFC_IP4) + return -EINVAL; + + niu_lock_parent(np, flags); + + for (i = 0; i < NIU_L3_PROG_CLS; i++) { + if (parent->l3_cls[i]) { + if (uspec->proto == parent->l3_cls_pid[i]) { + class = parent->l3_cls[i]; + parent->l3_cls_refcnt[i]++; + add_usr_cls = 1; + break; + } + } else { + /* Program new user IP class */ + switch (i) { + case 0: + class = CLASS_CODE_USER_PROG1; + break; + case 1: + class = CLASS_CODE_USER_PROG2; + break; + case 2: + class = CLASS_CODE_USER_PROG3; + break; + case 3: + class = CLASS_CODE_USER_PROG4; + break; + default: + break; + } + ret = tcam_user_ip_class_set(np, class, 0, + uspec->proto, + uspec->tos, + umask->tos); + if (ret) + goto out; + + ret = tcam_user_ip_class_enable(np, class, 1); + if (ret) + goto out; + parent->l3_cls[i] = class; + parent->l3_cls_pid[i] = uspec->proto; + parent->l3_cls_refcnt[i]++; + add_usr_cls = 1; + break; + } + } + if (!add_usr_cls) { + netdev_info(np->dev, "niu%d: %s(): Could not find/insert class for pid %d\n", + parent->index, __func__, uspec->proto); + ret = -EINVAL; + goto out; + } + niu_unlock_parent(np, flags); + } else { + if (!niu_ethflow_to_class(fsp->flow_type, &class)) { + return -EINVAL; + } + } + + niu_lock_parent(np, flags); + + idx = tcam_get_index(np, idx); + tp = &parent->tcam[idx]; + + memset(tp, 0, sizeof(*tp)); + + /* fill in the tcam key and mask */ + switch (fsp->flow_type) { + case TCP_V4_FLOW: + case UDP_V4_FLOW: + case SCTP_V4_FLOW: + case AH_V4_FLOW: + case ESP_V4_FLOW: + niu_get_tcamkey_from_ip4fs(fsp, tp, l2_rdc_table, class); + break; + case TCP_V6_FLOW: + case UDP_V6_FLOW: + case SCTP_V6_FLOW: + case AH_V6_FLOW: + case ESP_V6_FLOW: + /* Not yet implemented */ + netdev_info(np->dev, "niu%d: In %s(): flow %d for IPv6 not implemented\n", + parent->index, __func__, fsp->flow_type); + ret = -EINVAL; + goto out; + case IP_USER_FLOW: + niu_get_tcamkey_from_ip4fs(fsp, tp, l2_rdc_table, class); + break; + default: + netdev_info(np->dev, "niu%d: In %s(): Unknown flow type %d\n", + parent->index, __func__, fsp->flow_type); + ret = -EINVAL; + goto out; + } + + /* fill in the assoc data */ + if (fsp->ring_cookie == RX_CLS_FLOW_DISC) { + tp->assoc_data = TCAM_ASSOCDATA_DISC; + } else { + if (fsp->ring_cookie >= np->num_rx_rings) { + netdev_info(np->dev, "niu%d: In %s(): Invalid RX ring %lld\n", + parent->index, __func__, + (long long)fsp->ring_cookie); + ret = -EINVAL; + goto out; + } + tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET | + (fsp->ring_cookie << + TCAM_ASSOCDATA_OFFSET_SHIFT)); + } + + err = tcam_write(np, idx, tp->key, tp->key_mask); + if (err) { + ret = -EINVAL; + goto out; + } + err = tcam_assoc_write(np, idx, tp->assoc_data); + if (err) { + ret = -EINVAL; + goto out; + } + + /* validate the entry */ + tp->valid = 1; + np->clas.tcam_valid_entries++; +out: + niu_unlock_parent(np, flags); + + return ret; +} + +static int niu_del_ethtool_tcam_entry(struct niu *np, u32 loc) +{ + struct niu_parent *parent = np->parent; + struct niu_tcam_entry *tp; + u16 idx; + unsigned long flags; + u64 class; + int ret = 0; + + if (loc >= tcam_get_size(np)) + return -EINVAL; + + niu_lock_parent(np, flags); + + idx = tcam_get_index(np, loc); + tp = &parent->tcam[idx]; + + /* if the entry is of a user defined class, then update*/ + class = (tp->key[0] & TCAM_V4KEY0_CLASS_CODE) >> + TCAM_V4KEY0_CLASS_CODE_SHIFT; + + if (class >= CLASS_CODE_USER_PROG1 && class <= CLASS_CODE_USER_PROG4) { + int i; + for (i = 0; i < NIU_L3_PROG_CLS; i++) { + if (parent->l3_cls[i] == class) { + parent->l3_cls_refcnt[i]--; + if (!parent->l3_cls_refcnt[i]) { + /* disable class */ + ret = tcam_user_ip_class_enable(np, + class, + 0); + if (ret) + goto out; + parent->l3_cls[i] = 0; + parent->l3_cls_pid[i] = 0; + } + break; + } + } + if (i == NIU_L3_PROG_CLS) { + netdev_info(np->dev, "niu%d: In %s(): Usr class 0x%llx not found\n", + parent->index, __func__, + (unsigned long long)class); + ret = -EINVAL; + goto out; + } + } + + ret = tcam_flush(np, idx); + if (ret) + goto out; + + /* invalidate the entry */ + tp->valid = 0; + np->clas.tcam_valid_entries--; +out: + niu_unlock_parent(np, flags); + + return ret; +} + +static int niu_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd) +{ + struct niu *np = netdev_priv(dev); + int ret = 0; + + switch (cmd->cmd) { + case ETHTOOL_SRXFH: + ret = niu_set_hash_opts(np, cmd); + break; + case ETHTOOL_SRXCLSRLINS: + ret = niu_add_ethtool_tcam_entry(np, cmd); + break; + case ETHTOOL_SRXCLSRLDEL: + ret = niu_del_ethtool_tcam_entry(np, cmd->fs.location); + break; + default: + ret = -EINVAL; + break; + } + + return ret; +} + +static const struct { + const char string[ETH_GSTRING_LEN]; +} niu_xmac_stat_keys[] = { + { "tx_frames" }, + { "tx_bytes" }, + { "tx_fifo_errors" }, + { "tx_overflow_errors" }, + { "tx_max_pkt_size_errors" }, + { "tx_underflow_errors" }, + { "rx_local_faults" }, + { "rx_remote_faults" }, + { "rx_link_faults" }, + { "rx_align_errors" }, + { "rx_frags" }, + { "rx_mcasts" }, + { "rx_bcasts" }, + { "rx_hist_cnt1" }, + { "rx_hist_cnt2" }, + { "rx_hist_cnt3" }, + { "rx_hist_cnt4" }, + { "rx_hist_cnt5" }, + { "rx_hist_cnt6" }, + { "rx_hist_cnt7" }, + { "rx_octets" }, + { "rx_code_violations" }, + { "rx_len_errors" }, + { "rx_crc_errors" }, + { "rx_underflows" }, + { "rx_overflows" }, + { "pause_off_state" }, + { "pause_on_state" }, + { "pause_received" }, +}; + +#define NUM_XMAC_STAT_KEYS ARRAY_SIZE(niu_xmac_stat_keys) + +static const struct { + const char string[ETH_GSTRING_LEN]; +} niu_bmac_stat_keys[] = { + { "tx_underflow_errors" }, + { "tx_max_pkt_size_errors" }, + { "tx_bytes" }, + { "tx_frames" }, + { "rx_overflows" }, + { "rx_frames" }, + { "rx_align_errors" }, + { "rx_crc_errors" }, + { "rx_len_errors" }, + { "pause_off_state" }, + { "pause_on_state" }, + { "pause_received" }, +}; + +#define NUM_BMAC_STAT_KEYS ARRAY_SIZE(niu_bmac_stat_keys) + +static const struct { + const char string[ETH_GSTRING_LEN]; +} niu_rxchan_stat_keys[] = { + { "rx_channel" }, + { "rx_packets" }, + { "rx_bytes" }, + { "rx_dropped" }, + { "rx_errors" }, +}; + +#define NUM_RXCHAN_STAT_KEYS ARRAY_SIZE(niu_rxchan_stat_keys) + +static const struct { + const char string[ETH_GSTRING_LEN]; +} niu_txchan_stat_keys[] = { + { "tx_channel" }, + { "tx_packets" }, + { "tx_bytes" }, + { "tx_errors" }, +}; + +#define NUM_TXCHAN_STAT_KEYS ARRAY_SIZE(niu_txchan_stat_keys) + +static void niu_get_strings(struct net_device *dev, u32 stringset, u8 *data) +{ + struct niu *np = netdev_priv(dev); + int i; + + if (stringset != ETH_SS_STATS) + return; + + if (np->flags & NIU_FLAGS_XMAC) { + memcpy(data, niu_xmac_stat_keys, + sizeof(niu_xmac_stat_keys)); + data += sizeof(niu_xmac_stat_keys); + } else { + memcpy(data, niu_bmac_stat_keys, + sizeof(niu_bmac_stat_keys)); + data += sizeof(niu_bmac_stat_keys); + } + for (i = 0; i < np->num_rx_rings; i++) { + memcpy(data, niu_rxchan_stat_keys, + sizeof(niu_rxchan_stat_keys)); + data += sizeof(niu_rxchan_stat_keys); + } + for (i = 0; i < np->num_tx_rings; i++) { + memcpy(data, niu_txchan_stat_keys, + sizeof(niu_txchan_stat_keys)); + data += sizeof(niu_txchan_stat_keys); + } +} + +static int niu_get_sset_count(struct net_device *dev, int stringset) +{ + struct niu *np = netdev_priv(dev); + + if (stringset != ETH_SS_STATS) + return -EINVAL; + + return (np->flags & NIU_FLAGS_XMAC ? + NUM_XMAC_STAT_KEYS : + NUM_BMAC_STAT_KEYS) + + (np->num_rx_rings * NUM_RXCHAN_STAT_KEYS) + + (np->num_tx_rings * NUM_TXCHAN_STAT_KEYS); +} + +static void niu_get_ethtool_stats(struct net_device *dev, + struct ethtool_stats *stats, u64 *data) +{ + struct niu *np = netdev_priv(dev); + int i; + + niu_sync_mac_stats(np); + if (np->flags & NIU_FLAGS_XMAC) { + memcpy(data, &np->mac_stats.xmac, + sizeof(struct niu_xmac_stats)); + data += (sizeof(struct niu_xmac_stats) / sizeof(u64)); + } else { + memcpy(data, &np->mac_stats.bmac, + sizeof(struct niu_bmac_stats)); + data += (sizeof(struct niu_bmac_stats) / sizeof(u64)); + } + for (i = 0; i < np->num_rx_rings; i++) { + struct rx_ring_info *rp = &np->rx_rings[i]; + + niu_sync_rx_discard_stats(np, rp, 0); + + data[0] = rp->rx_channel; + data[1] = rp->rx_packets; + data[2] = rp->rx_bytes; + data[3] = rp->rx_dropped; + data[4] = rp->rx_errors; + data += 5; + } + for (i = 0; i < np->num_tx_rings; i++) { + struct tx_ring_info *rp = &np->tx_rings[i]; + + data[0] = rp->tx_channel; + data[1] = rp->tx_packets; + data[2] = rp->tx_bytes; + data[3] = rp->tx_errors; + data += 4; + } +} + +static u64 niu_led_state_save(struct niu *np) +{ + if (np->flags & NIU_FLAGS_XMAC) + return nr64_mac(XMAC_CONFIG); + else + return nr64_mac(BMAC_XIF_CONFIG); +} + +static void niu_led_state_restore(struct niu *np, u64 val) +{ + if (np->flags & NIU_FLAGS_XMAC) + nw64_mac(XMAC_CONFIG, val); + else + nw64_mac(BMAC_XIF_CONFIG, val); +} + +static void niu_force_led(struct niu *np, int on) +{ + u64 val, reg, bit; + + if (np->flags & NIU_FLAGS_XMAC) { + reg = XMAC_CONFIG; + bit = XMAC_CONFIG_FORCE_LED_ON; + } else { + reg = BMAC_XIF_CONFIG; + bit = BMAC_XIF_CONFIG_LINK_LED; + } + + val = nr64_mac(reg); + if (on) + val |= bit; + else + val &= ~bit; + nw64_mac(reg, val); +} + +static int niu_set_phys_id(struct net_device *dev, + enum ethtool_phys_id_state state) + +{ + struct niu *np = netdev_priv(dev); + + if (!netif_running(dev)) + return -EAGAIN; + + switch (state) { + case ETHTOOL_ID_ACTIVE: + np->orig_led_state = niu_led_state_save(np); + return 1; /* cycle on/off once per second */ + + case ETHTOOL_ID_ON: + niu_force_led(np, 1); + break; + + case ETHTOOL_ID_OFF: + niu_force_led(np, 0); + break; + + case ETHTOOL_ID_INACTIVE: + niu_led_state_restore(np, np->orig_led_state); + } + + return 0; +} + +static const struct ethtool_ops niu_ethtool_ops = { + .get_drvinfo = niu_get_drvinfo, + .get_link = ethtool_op_get_link, + .get_msglevel = niu_get_msglevel, + .set_msglevel = niu_set_msglevel, + .nway_reset = niu_nway_reset, + .get_eeprom_len = niu_get_eeprom_len, + .get_eeprom = niu_get_eeprom, + .get_settings = niu_get_settings, + .set_settings = niu_set_settings, + .get_strings = niu_get_strings, + .get_sset_count = niu_get_sset_count, + .get_ethtool_stats = niu_get_ethtool_stats, + .set_phys_id = niu_set_phys_id, + .get_rxnfc = niu_get_nfc, + .set_rxnfc = niu_set_nfc, +}; + +static int niu_ldg_assign_ldn(struct niu *np, struct niu_parent *parent, + int ldg, int ldn) +{ + if (ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX) + return -EINVAL; + if (ldn < 0 || ldn > LDN_MAX) + return -EINVAL; + + parent->ldg_map[ldn] = ldg; + + if (np->parent->plat_type == PLAT_TYPE_NIU) { + /* On N2 NIU, the ldn-->ldg assignments are setup and fixed by + * the firmware, and we're not supposed to change them. + * Validate the mapping, because if it's wrong we probably + * won't get any interrupts and that's painful to debug. + */ + if (nr64(LDG_NUM(ldn)) != ldg) { + dev_err(np->device, "Port %u, mis-matched LDG assignment for ldn %d, should be %d is %llu\n", + np->port, ldn, ldg, + (unsigned long long) nr64(LDG_NUM(ldn))); + return -EINVAL; + } + } else + nw64(LDG_NUM(ldn), ldg); + + return 0; +} + +static int niu_set_ldg_timer_res(struct niu *np, int res) +{ + if (res < 0 || res > LDG_TIMER_RES_VAL) + return -EINVAL; + + + nw64(LDG_TIMER_RES, res); + + return 0; +} + +static int niu_set_ldg_sid(struct niu *np, int ldg, int func, int vector) +{ + if ((ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX) || + (func < 0 || func > 3) || + (vector < 0 || vector > 0x1f)) + return -EINVAL; + + nw64(SID(ldg), (func << SID_FUNC_SHIFT) | vector); + + return 0; +} + +static int niu_pci_eeprom_read(struct niu *np, u32 addr) +{ + u64 frame, frame_base = (ESPC_PIO_STAT_READ_START | + (addr << ESPC_PIO_STAT_ADDR_SHIFT)); + int limit; + + if (addr > (ESPC_PIO_STAT_ADDR >> ESPC_PIO_STAT_ADDR_SHIFT)) + return -EINVAL; + + frame = frame_base; + nw64(ESPC_PIO_STAT, frame); + limit = 64; + do { + udelay(5); + frame = nr64(ESPC_PIO_STAT); + if (frame & ESPC_PIO_STAT_READ_END) + break; + } while (limit--); + if (!(frame & ESPC_PIO_STAT_READ_END)) { + dev_err(np->device, "EEPROM read timeout frame[%llx]\n", + (unsigned long long) frame); + return -ENODEV; + } + + frame = frame_base; + nw64(ESPC_PIO_STAT, frame); + limit = 64; + do { + udelay(5); + frame = nr64(ESPC_PIO_STAT); + if (frame & ESPC_PIO_STAT_READ_END) + break; + } while (limit--); + if (!(frame & ESPC_PIO_STAT_READ_END)) { + dev_err(np->device, "EEPROM read timeout frame[%llx]\n", + (unsigned long long) frame); + return -ENODEV; + } + + frame = nr64(ESPC_PIO_STAT); + return (frame & ESPC_PIO_STAT_DATA) >> ESPC_PIO_STAT_DATA_SHIFT; +} + +static int niu_pci_eeprom_read16(struct niu *np, u32 off) +{ + int err = niu_pci_eeprom_read(np, off); + u16 val; + + if (err < 0) + return err; + val = (err << 8); + err = niu_pci_eeprom_read(np, off + 1); + if (err < 0) + return err; + val |= (err & 0xff); + + return val; +} + +static int niu_pci_eeprom_read16_swp(struct niu *np, u32 off) +{ + int err = niu_pci_eeprom_read(np, off); + u16 val; + + if (err < 0) + return err; + + val = (err & 0xff); + err = niu_pci_eeprom_read(np, off + 1); + if (err < 0) + return err; + + val |= (err & 0xff) << 8; + + return val; +} + +static int niu_pci_vpd_get_propname(struct niu *np, u32 off, char *namebuf, + int namebuf_len) +{ + int i; + + for (i = 0; i < namebuf_len; i++) { + int err = niu_pci_eeprom_read(np, off + i); + if (err < 0) + return err; + *namebuf++ = err; + if (!err) + break; + } + if (i >= namebuf_len) + return -EINVAL; + + return i + 1; +} + +static void niu_vpd_parse_version(struct niu *np) +{ + struct niu_vpd *vpd = &np->vpd; + int len = strlen(vpd->version) + 1; + const char *s = vpd->version; + int i; + + for (i = 0; i < len - 5; i++) { + if (!strncmp(s + i, "FCode ", 6)) + break; + } + if (i >= len - 5) + return; + + s += i + 5; + sscanf(s, "%d.%d", &vpd->fcode_major, &vpd->fcode_minor); + + netif_printk(np, probe, KERN_DEBUG, np->dev, + "VPD_SCAN: FCODE major(%d) minor(%d)\n", + vpd->fcode_major, vpd->fcode_minor); + if (vpd->fcode_major > NIU_VPD_MIN_MAJOR || + (vpd->fcode_major == NIU_VPD_MIN_MAJOR && + vpd->fcode_minor >= NIU_VPD_MIN_MINOR)) + np->flags |= NIU_FLAGS_VPD_VALID; +} + +/* ESPC_PIO_EN_ENABLE must be set */ +static int niu_pci_vpd_scan_props(struct niu *np, u32 start, u32 end) +{ + unsigned int found_mask = 0; +#define FOUND_MASK_MODEL 0x00000001 +#define FOUND_MASK_BMODEL 0x00000002 +#define FOUND_MASK_VERS 0x00000004 +#define FOUND_MASK_MAC 0x00000008 +#define FOUND_MASK_NMAC 0x00000010 +#define FOUND_MASK_PHY 0x00000020 +#define FOUND_MASK_ALL 0x0000003f + + netif_printk(np, probe, KERN_DEBUG, np->dev, + "VPD_SCAN: start[%x] end[%x]\n", start, end); + while (start < end) { + int len, err, prop_len; + char namebuf[64]; + u8 *prop_buf; + int max_len; + + if (found_mask == FOUND_MASK_ALL) { + niu_vpd_parse_version(np); + return 1; + } + + err = niu_pci_eeprom_read(np, start + 2); + if (err < 0) + return err; + len = err; + start += 3; + + prop_len = niu_pci_eeprom_read(np, start + 4); + err = niu_pci_vpd_get_propname(np, start + 5, namebuf, 64); + if (err < 0) + return err; + + prop_buf = NULL; + max_len = 0; + if (!strcmp(namebuf, "model")) { + prop_buf = np->vpd.model; + max_len = NIU_VPD_MODEL_MAX; + found_mask |= FOUND_MASK_MODEL; + } else if (!strcmp(namebuf, "board-model")) { + prop_buf = np->vpd.board_model; + max_len = NIU_VPD_BD_MODEL_MAX; + found_mask |= FOUND_MASK_BMODEL; + } else if (!strcmp(namebuf, "version")) { + prop_buf = np->vpd.version; + max_len = NIU_VPD_VERSION_MAX; + found_mask |= FOUND_MASK_VERS; + } else if (!strcmp(namebuf, "local-mac-address")) { + prop_buf = np->vpd.local_mac; + max_len = ETH_ALEN; + found_mask |= FOUND_MASK_MAC; + } else if (!strcmp(namebuf, "num-mac-addresses")) { + prop_buf = &np->vpd.mac_num; + max_len = 1; + found_mask |= FOUND_MASK_NMAC; + } else if (!strcmp(namebuf, "phy-type")) { + prop_buf = np->vpd.phy_type; + max_len = NIU_VPD_PHY_TYPE_MAX; + found_mask |= FOUND_MASK_PHY; + } + + if (max_len && prop_len > max_len) { + dev_err(np->device, "Property '%s' length (%d) is too long\n", namebuf, prop_len); + return -EINVAL; + } + + if (prop_buf) { + u32 off = start + 5 + err; + int i; + + netif_printk(np, probe, KERN_DEBUG, np->dev, + "VPD_SCAN: Reading in property [%s] len[%d]\n", + namebuf, prop_len); + for (i = 0; i < prop_len; i++) + *prop_buf++ = niu_pci_eeprom_read(np, off + i); + } + + start += len; + } + + return 0; +} + +/* ESPC_PIO_EN_ENABLE must be set */ +static void niu_pci_vpd_fetch(struct niu *np, u32 start) +{ + u32 offset; + int err; + + err = niu_pci_eeprom_read16_swp(np, start + 1); + if (err < 0) + return; + + offset = err + 3; + + while (start + offset < ESPC_EEPROM_SIZE) { + u32 here = start + offset; + u32 end; + + err = niu_pci_eeprom_read(np, here); + if (err != 0x90) + return; + + err = niu_pci_eeprom_read16_swp(np, here + 1); + if (err < 0) + return; + + here = start + offset + 3; + end = start + offset + err; + + offset += err; + + err = niu_pci_vpd_scan_props(np, here, end); + if (err < 0 || err == 1) + return; + } +} + +/* ESPC_PIO_EN_ENABLE must be set */ +static u32 niu_pci_vpd_offset(struct niu *np) +{ + u32 start = 0, end = ESPC_EEPROM_SIZE, ret; + int err; + + while (start < end) { + ret = start; + + /* ROM header signature? */ + err = niu_pci_eeprom_read16(np, start + 0); + if (err != 0x55aa) + return 0; + + /* Apply offset to PCI data structure. */ + err = niu_pci_eeprom_read16(np, start + 23); + if (err < 0) + return 0; + start += err; + + /* Check for "PCIR" signature. */ + err = niu_pci_eeprom_read16(np, start + 0); + if (err != 0x5043) + return 0; + err = niu_pci_eeprom_read16(np, start + 2); + if (err != 0x4952) + return 0; + + /* Check for OBP image type. */ + err = niu_pci_eeprom_read(np, start + 20); + if (err < 0) + return 0; + if (err != 0x01) { + err = niu_pci_eeprom_read(np, ret + 2); + if (err < 0) + return 0; + + start = ret + (err * 512); + continue; + } + + err = niu_pci_eeprom_read16_swp(np, start + 8); + if (err < 0) + return err; + ret += err; + + err = niu_pci_eeprom_read(np, ret + 0); + if (err != 0x82) + return 0; + + return ret; + } + + return 0; +} + +static int niu_phy_type_prop_decode(struct niu *np, const char *phy_prop) +{ + if (!strcmp(phy_prop, "mif")) { + /* 1G copper, MII */ + np->flags &= ~(NIU_FLAGS_FIBER | + NIU_FLAGS_10G); + np->mac_xcvr = MAC_XCVR_MII; + } else if (!strcmp(phy_prop, "xgf")) { + /* 10G fiber, XPCS */ + np->flags |= (NIU_FLAGS_10G | + NIU_FLAGS_FIBER); + np->mac_xcvr = MAC_XCVR_XPCS; + } else if (!strcmp(phy_prop, "pcs")) { + /* 1G fiber, PCS */ + np->flags &= ~NIU_FLAGS_10G; + np->flags |= NIU_FLAGS_FIBER; + np->mac_xcvr = MAC_XCVR_PCS; + } else if (!strcmp(phy_prop, "xgc")) { + /* 10G copper, XPCS */ + np->flags |= NIU_FLAGS_10G; + np->flags &= ~NIU_FLAGS_FIBER; + np->mac_xcvr = MAC_XCVR_XPCS; + } else if (!strcmp(phy_prop, "xgsd") || !strcmp(phy_prop, "gsd")) { + /* 10G Serdes or 1G Serdes, default to 10G */ + np->flags |= NIU_FLAGS_10G; + np->flags &= ~NIU_FLAGS_FIBER; + np->flags |= NIU_FLAGS_XCVR_SERDES; + np->mac_xcvr = MAC_XCVR_XPCS; + } else { + return -EINVAL; + } + return 0; +} + +static int niu_pci_vpd_get_nports(struct niu *np) +{ + int ports = 0; + + if ((!strcmp(np->vpd.model, NIU_QGC_LP_MDL_STR)) || + (!strcmp(np->vpd.model, NIU_QGC_PEM_MDL_STR)) || + (!strcmp(np->vpd.model, NIU_MARAMBA_MDL_STR)) || + (!strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) || + (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR))) { + ports = 4; + } else if ((!strcmp(np->vpd.model, NIU_2XGF_LP_MDL_STR)) || + (!strcmp(np->vpd.model, NIU_2XGF_PEM_MDL_STR)) || + (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) || + (!strcmp(np->vpd.model, NIU_2XGF_MRVL_MDL_STR))) { + ports = 2; + } + + return ports; +} + +static void niu_pci_vpd_validate(struct niu *np) +{ + struct net_device *dev = np->dev; + struct niu_vpd *vpd = &np->vpd; + u8 val8; + + if (!is_valid_ether_addr(&vpd->local_mac[0])) { + dev_err(np->device, "VPD MAC invalid, falling back to SPROM\n"); + + np->flags &= ~NIU_FLAGS_VPD_VALID; + return; + } + + if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) || + !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) { + np->flags |= NIU_FLAGS_10G; + np->flags &= ~NIU_FLAGS_FIBER; + np->flags |= NIU_FLAGS_XCVR_SERDES; + np->mac_xcvr = MAC_XCVR_PCS; + if (np->port > 1) { + np->flags |= NIU_FLAGS_FIBER; + np->flags &= ~NIU_FLAGS_10G; + } + if (np->flags & NIU_FLAGS_10G) + np->mac_xcvr = MAC_XCVR_XPCS; + } else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) { + np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER | + NIU_FLAGS_HOTPLUG_PHY); + } else if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) { + dev_err(np->device, "Illegal phy string [%s]\n", + np->vpd.phy_type); + dev_err(np->device, "Falling back to SPROM\n"); + np->flags &= ~NIU_FLAGS_VPD_VALID; + return; + } + + memcpy(dev->dev_addr, vpd->local_mac, ETH_ALEN); + + val8 = dev->dev_addr[5]; + dev->dev_addr[5] += np->port; + if (dev->dev_addr[5] < val8) + dev->dev_addr[4]++; +} + +static int niu_pci_probe_sprom(struct niu *np) +{ + struct net_device *dev = np->dev; + int len, i; + u64 val, sum; + u8 val8; + + val = (nr64(ESPC_VER_IMGSZ) & ESPC_VER_IMGSZ_IMGSZ); + val >>= ESPC_VER_IMGSZ_IMGSZ_SHIFT; + len = val / 4; + + np->eeprom_len = len; + + netif_printk(np, probe, KERN_DEBUG, np->dev, + "SPROM: Image size %llu\n", (unsigned long long)val); + + sum = 0; + for (i = 0; i < len; i++) { + val = nr64(ESPC_NCR(i)); + sum += (val >> 0) & 0xff; + sum += (val >> 8) & 0xff; + sum += (val >> 16) & 0xff; + sum += (val >> 24) & 0xff; + } + netif_printk(np, probe, KERN_DEBUG, np->dev, + "SPROM: Checksum %x\n", (int)(sum & 0xff)); + if ((sum & 0xff) != 0xab) { + dev_err(np->device, "Bad SPROM checksum (%x, should be 0xab)\n", (int)(sum & 0xff)); + return -EINVAL; + } + + val = nr64(ESPC_PHY_TYPE); + switch (np->port) { + case 0: + val8 = (val & ESPC_PHY_TYPE_PORT0) >> + ESPC_PHY_TYPE_PORT0_SHIFT; + break; + case 1: + val8 = (val & ESPC_PHY_TYPE_PORT1) >> + ESPC_PHY_TYPE_PORT1_SHIFT; + break; + case 2: + val8 = (val & ESPC_PHY_TYPE_PORT2) >> + ESPC_PHY_TYPE_PORT2_SHIFT; + break; + case 3: + val8 = (val & ESPC_PHY_TYPE_PORT3) >> + ESPC_PHY_TYPE_PORT3_SHIFT; + break; + default: + dev_err(np->device, "Bogus port number %u\n", + np->port); + return -EINVAL; + } + netif_printk(np, probe, KERN_DEBUG, np->dev, + "SPROM: PHY type %x\n", val8); + + switch (val8) { + case ESPC_PHY_TYPE_1G_COPPER: + /* 1G copper, MII */ + np->flags &= ~(NIU_FLAGS_FIBER | + NIU_FLAGS_10G); + np->mac_xcvr = MAC_XCVR_MII; + break; + + case ESPC_PHY_TYPE_1G_FIBER: + /* 1G fiber, PCS */ + np->flags &= ~NIU_FLAGS_10G; + np->flags |= NIU_FLAGS_FIBER; + np->mac_xcvr = MAC_XCVR_PCS; + break; + + case ESPC_PHY_TYPE_10G_COPPER: + /* 10G copper, XPCS */ + np->flags |= NIU_FLAGS_10G; + np->flags &= ~NIU_FLAGS_FIBER; + np->mac_xcvr = MAC_XCVR_XPCS; + break; + + case ESPC_PHY_TYPE_10G_FIBER: + /* 10G fiber, XPCS */ + np->flags |= (NIU_FLAGS_10G | + NIU_FLAGS_FIBER); + np->mac_xcvr = MAC_XCVR_XPCS; + break; + + default: + dev_err(np->device, "Bogus SPROM phy type %u\n", val8); + return -EINVAL; + } + + val = nr64(ESPC_MAC_ADDR0); + netif_printk(np, probe, KERN_DEBUG, np->dev, + "SPROM: MAC_ADDR0[%08llx]\n", (unsigned long long)val); + dev->dev_addr[0] = (val >> 0) & 0xff; + dev->dev_addr[1] = (val >> 8) & 0xff; + dev->dev_addr[2] = (val >> 16) & 0xff; + dev->dev_addr[3] = (val >> 24) & 0xff; + + val = nr64(ESPC_MAC_ADDR1); + netif_printk(np, probe, KERN_DEBUG, np->dev, + "SPROM: MAC_ADDR1[%08llx]\n", (unsigned long long)val); + dev->dev_addr[4] = (val >> 0) & 0xff; + dev->dev_addr[5] = (val >> 8) & 0xff; + + if (!is_valid_ether_addr(&dev->dev_addr[0])) { + dev_err(np->device, "SPROM MAC address invalid [ %pM ]\n", + dev->dev_addr); + return -EINVAL; + } + + val8 = dev->dev_addr[5]; + dev->dev_addr[5] += np->port; + if (dev->dev_addr[5] < val8) + dev->dev_addr[4]++; + + val = nr64(ESPC_MOD_STR_LEN); + netif_printk(np, probe, KERN_DEBUG, np->dev, + "SPROM: MOD_STR_LEN[%llu]\n", (unsigned long long)val); + if (val >= 8 * 4) + return -EINVAL; + + for (i = 0; i < val; i += 4) { + u64 tmp = nr64(ESPC_NCR(5 + (i / 4))); + + np->vpd.model[i + 3] = (tmp >> 0) & 0xff; + np->vpd.model[i + 2] = (tmp >> 8) & 0xff; + np->vpd.model[i + 1] = (tmp >> 16) & 0xff; + np->vpd.model[i + 0] = (tmp >> 24) & 0xff; + } + np->vpd.model[val] = '\0'; + + val = nr64(ESPC_BD_MOD_STR_LEN); + netif_printk(np, probe, KERN_DEBUG, np->dev, + "SPROM: BD_MOD_STR_LEN[%llu]\n", (unsigned long long)val); + if (val >= 4 * 4) + return -EINVAL; + + for (i = 0; i < val; i += 4) { + u64 tmp = nr64(ESPC_NCR(14 + (i / 4))); + + np->vpd.board_model[i + 3] = (tmp >> 0) & 0xff; + np->vpd.board_model[i + 2] = (tmp >> 8) & 0xff; + np->vpd.board_model[i + 1] = (tmp >> 16) & 0xff; + np->vpd.board_model[i + 0] = (tmp >> 24) & 0xff; + } + np->vpd.board_model[val] = '\0'; + + np->vpd.mac_num = + nr64(ESPC_NUM_PORTS_MACS) & ESPC_NUM_PORTS_MACS_VAL; + netif_printk(np, probe, KERN_DEBUG, np->dev, + "SPROM: NUM_PORTS_MACS[%d]\n", np->vpd.mac_num); + + return 0; +} + +static int niu_get_and_validate_port(struct niu *np) +{ + struct niu_parent *parent = np->parent; + + if (np->port <= 1) + np->flags |= NIU_FLAGS_XMAC; + + if (!parent->num_ports) { + if (parent->plat_type == PLAT_TYPE_NIU) { + parent->num_ports = 2; + } else { + parent->num_ports = niu_pci_vpd_get_nports(np); + if (!parent->num_ports) { + /* Fall back to SPROM as last resort. + * This will fail on most cards. + */ + parent->num_ports = nr64(ESPC_NUM_PORTS_MACS) & + ESPC_NUM_PORTS_MACS_VAL; + + /* All of the current probing methods fail on + * Maramba on-board parts. + */ + if (!parent->num_ports) + parent->num_ports = 4; + } + } + } + + if (np->port >= parent->num_ports) + return -ENODEV; + + return 0; +} + +static int phy_record(struct niu_parent *parent, struct phy_probe_info *p, + int dev_id_1, int dev_id_2, u8 phy_port, int type) +{ + u32 id = (dev_id_1 << 16) | dev_id_2; + u8 idx; + + if (dev_id_1 < 0 || dev_id_2 < 0) + return 0; + if (type == PHY_TYPE_PMA_PMD || type == PHY_TYPE_PCS) { + /* Because of the NIU_PHY_ID_MASK being applied, the 8704 + * test covers the 8706 as well. + */ + if (((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8704) && + ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_MRVL88X2011)) + return 0; + } else { + if ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM5464R) + return 0; + } + + pr_info("niu%d: Found PHY %08x type %s at phy_port %u\n", + parent->index, id, + type == PHY_TYPE_PMA_PMD ? "PMA/PMD" : + type == PHY_TYPE_PCS ? "PCS" : "MII", + phy_port); + + if (p->cur[type] >= NIU_MAX_PORTS) { + pr_err("Too many PHY ports\n"); + return -EINVAL; + } + idx = p->cur[type]; + p->phy_id[type][idx] = id; + p->phy_port[type][idx] = phy_port; + p->cur[type] = idx + 1; + return 0; +} + +static int port_has_10g(struct phy_probe_info *p, int port) +{ + int i; + + for (i = 0; i < p->cur[PHY_TYPE_PMA_PMD]; i++) { + if (p->phy_port[PHY_TYPE_PMA_PMD][i] == port) + return 1; + } + for (i = 0; i < p->cur[PHY_TYPE_PCS]; i++) { + if (p->phy_port[PHY_TYPE_PCS][i] == port) + return 1; + } + + return 0; +} + +static int count_10g_ports(struct phy_probe_info *p, int *lowest) +{ + int port, cnt; + + cnt = 0; + *lowest = 32; + for (port = 8; port < 32; port++) { + if (port_has_10g(p, port)) { + if (!cnt) + *lowest = port; + cnt++; + } + } + + return cnt; +} + +static int count_1g_ports(struct phy_probe_info *p, int *lowest) +{ + *lowest = 32; + if (p->cur[PHY_TYPE_MII]) + *lowest = p->phy_port[PHY_TYPE_MII][0]; + + return p->cur[PHY_TYPE_MII]; +} + +static void niu_n2_divide_channels(struct niu_parent *parent) +{ + int num_ports = parent->num_ports; + int i; + + for (i = 0; i < num_ports; i++) { + parent->rxchan_per_port[i] = (16 / num_ports); + parent->txchan_per_port[i] = (16 / num_ports); + + pr_info("niu%d: Port %u [%u RX chans] [%u TX chans]\n", + parent->index, i, + parent->rxchan_per_port[i], + parent->txchan_per_port[i]); + } +} + +static void niu_divide_channels(struct niu_parent *parent, + int num_10g, int num_1g) +{ + int num_ports = parent->num_ports; + int rx_chans_per_10g, rx_chans_per_1g; + int tx_chans_per_10g, tx_chans_per_1g; + int i, tot_rx, tot_tx; + + if (!num_10g || !num_1g) { + rx_chans_per_10g = rx_chans_per_1g = + (NIU_NUM_RXCHAN / num_ports); + tx_chans_per_10g = tx_chans_per_1g = + (NIU_NUM_TXCHAN / num_ports); + } else { + rx_chans_per_1g = NIU_NUM_RXCHAN / 8; + rx_chans_per_10g = (NIU_NUM_RXCHAN - + (rx_chans_per_1g * num_1g)) / + num_10g; + + tx_chans_per_1g = NIU_NUM_TXCHAN / 6; + tx_chans_per_10g = (NIU_NUM_TXCHAN - + (tx_chans_per_1g * num_1g)) / + num_10g; + } + + tot_rx = tot_tx = 0; + for (i = 0; i < num_ports; i++) { + int type = phy_decode(parent->port_phy, i); + + if (type == PORT_TYPE_10G) { + parent->rxchan_per_port[i] = rx_chans_per_10g; + parent->txchan_per_port[i] = tx_chans_per_10g; + } else { + parent->rxchan_per_port[i] = rx_chans_per_1g; + parent->txchan_per_port[i] = tx_chans_per_1g; + } + pr_info("niu%d: Port %u [%u RX chans] [%u TX chans]\n", + parent->index, i, + parent->rxchan_per_port[i], + parent->txchan_per_port[i]); + tot_rx += parent->rxchan_per_port[i]; + tot_tx += parent->txchan_per_port[i]; + } + + if (tot_rx > NIU_NUM_RXCHAN) { + pr_err("niu%d: Too many RX channels (%d), resetting to one per port\n", + parent->index, tot_rx); + for (i = 0; i < num_ports; i++) + parent->rxchan_per_port[i] = 1; + } + if (tot_tx > NIU_NUM_TXCHAN) { + pr_err("niu%d: Too many TX channels (%d), resetting to one per port\n", + parent->index, tot_tx); + for (i = 0; i < num_ports; i++) + parent->txchan_per_port[i] = 1; + } + if (tot_rx < NIU_NUM_RXCHAN || tot_tx < NIU_NUM_TXCHAN) { + pr_warn("niu%d: Driver bug, wasted channels, RX[%d] TX[%d]\n", + parent->index, tot_rx, tot_tx); + } +} + +static void niu_divide_rdc_groups(struct niu_parent *parent, + int num_10g, int num_1g) +{ + int i, num_ports = parent->num_ports; + int rdc_group, rdc_groups_per_port; + int rdc_channel_base; + + rdc_group = 0; + rdc_groups_per_port = NIU_NUM_RDC_TABLES / num_ports; + + rdc_channel_base = 0; + + for (i = 0; i < num_ports; i++) { + struct niu_rdc_tables *tp = &parent->rdc_group_cfg[i]; + int grp, num_channels = parent->rxchan_per_port[i]; + int this_channel_offset; + + tp->first_table_num = rdc_group; + tp->num_tables = rdc_groups_per_port; + this_channel_offset = 0; + for (grp = 0; grp < tp->num_tables; grp++) { + struct rdc_table *rt = &tp->tables[grp]; + int slot; + + pr_info("niu%d: Port %d RDC tbl(%d) [ ", + parent->index, i, tp->first_table_num + grp); + for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++) { + rt->rxdma_channel[slot] = + rdc_channel_base + this_channel_offset; + + pr_cont("%d ", rt->rxdma_channel[slot]); + + if (++this_channel_offset == num_channels) + this_channel_offset = 0; + } + pr_cont("]\n"); + } + + parent->rdc_default[i] = rdc_channel_base; + + rdc_channel_base += num_channels; + rdc_group += rdc_groups_per_port; + } +} + +static int fill_phy_probe_info(struct niu *np, struct niu_parent *parent, + struct phy_probe_info *info) +{ + unsigned long flags; + int port, err; + + memset(info, 0, sizeof(*info)); + + /* Port 0 to 7 are reserved for onboard Serdes, probe the rest. */ + niu_lock_parent(np, flags); + err = 0; + for (port = 8; port < 32; port++) { + int dev_id_1, dev_id_2; + + dev_id_1 = mdio_read(np, port, + NIU_PMA_PMD_DEV_ADDR, MII_PHYSID1); + dev_id_2 = mdio_read(np, port, + NIU_PMA_PMD_DEV_ADDR, MII_PHYSID2); + err = phy_record(parent, info, dev_id_1, dev_id_2, port, + PHY_TYPE_PMA_PMD); + if (err) + break; + dev_id_1 = mdio_read(np, port, + NIU_PCS_DEV_ADDR, MII_PHYSID1); + dev_id_2 = mdio_read(np, port, + NIU_PCS_DEV_ADDR, MII_PHYSID2); + err = phy_record(parent, info, dev_id_1, dev_id_2, port, + PHY_TYPE_PCS); + if (err) + break; + dev_id_1 = mii_read(np, port, MII_PHYSID1); + dev_id_2 = mii_read(np, port, MII_PHYSID2); + err = phy_record(parent, info, dev_id_1, dev_id_2, port, + PHY_TYPE_MII); + if (err) + break; + } + niu_unlock_parent(np, flags); + + return err; +} + +static int walk_phys(struct niu *np, struct niu_parent *parent) +{ + struct phy_probe_info *info = &parent->phy_probe_info; + int lowest_10g, lowest_1g; + int num_10g, num_1g; + u32 val; + int err; + + num_10g = num_1g = 0; + + if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) || + !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) { + num_10g = 0; + num_1g = 2; + parent->plat_type = PLAT_TYPE_ATCA_CP3220; + parent->num_ports = 4; + val = (phy_encode(PORT_TYPE_1G, 0) | + phy_encode(PORT_TYPE_1G, 1) | + phy_encode(PORT_TYPE_1G, 2) | + phy_encode(PORT_TYPE_1G, 3)); + } else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) { + num_10g = 2; + num_1g = 0; + parent->num_ports = 2; + val = (phy_encode(PORT_TYPE_10G, 0) | + phy_encode(PORT_TYPE_10G, 1)); + } else if ((np->flags & NIU_FLAGS_XCVR_SERDES) && + (parent->plat_type == PLAT_TYPE_NIU)) { + /* this is the Monza case */ + if (np->flags & NIU_FLAGS_10G) { + val = (phy_encode(PORT_TYPE_10G, 0) | + phy_encode(PORT_TYPE_10G, 1)); + } else { + val = (phy_encode(PORT_TYPE_1G, 0) | + phy_encode(PORT_TYPE_1G, 1)); + } + } else { + err = fill_phy_probe_info(np, parent, info); + if (err) + return err; + + num_10g = count_10g_ports(info, &lowest_10g); + num_1g = count_1g_ports(info, &lowest_1g); + + switch ((num_10g << 4) | num_1g) { + case 0x24: + if (lowest_1g == 10) + parent->plat_type = PLAT_TYPE_VF_P0; + else if (lowest_1g == 26) + parent->plat_type = PLAT_TYPE_VF_P1; + else + goto unknown_vg_1g_port; + + /* fallthru */ + case 0x22: + val = (phy_encode(PORT_TYPE_10G, 0) | + phy_encode(PORT_TYPE_10G, 1) | + phy_encode(PORT_TYPE_1G, 2) | + phy_encode(PORT_TYPE_1G, 3)); + break; + + case 0x20: + val = (phy_encode(PORT_TYPE_10G, 0) | + phy_encode(PORT_TYPE_10G, 1)); + break; + + case 0x10: + val = phy_encode(PORT_TYPE_10G, np->port); + break; + + case 0x14: + if (lowest_1g == 10) + parent->plat_type = PLAT_TYPE_VF_P0; + else if (lowest_1g == 26) + parent->plat_type = PLAT_TYPE_VF_P1; + else + goto unknown_vg_1g_port; + + /* fallthru */ + case 0x13: + if ((lowest_10g & 0x7) == 0) + val = (phy_encode(PORT_TYPE_10G, 0) | + phy_encode(PORT_TYPE_1G, 1) | + phy_encode(PORT_TYPE_1G, 2) | + phy_encode(PORT_TYPE_1G, 3)); + else + val = (phy_encode(PORT_TYPE_1G, 0) | + phy_encode(PORT_TYPE_10G, 1) | + phy_encode(PORT_TYPE_1G, 2) | + phy_encode(PORT_TYPE_1G, 3)); + break; + + case 0x04: + if (lowest_1g == 10) + parent->plat_type = PLAT_TYPE_VF_P0; + else if (lowest_1g == 26) + parent->plat_type = PLAT_TYPE_VF_P1; + else + goto unknown_vg_1g_port; + + val = (phy_encode(PORT_TYPE_1G, 0) | + phy_encode(PORT_TYPE_1G, 1) | + phy_encode(PORT_TYPE_1G, 2) | + phy_encode(PORT_TYPE_1G, 3)); + break; + + default: + pr_err("Unsupported port config 10G[%d] 1G[%d]\n", + num_10g, num_1g); + return -EINVAL; + } + } + + parent->port_phy = val; + + if (parent->plat_type == PLAT_TYPE_NIU) + niu_n2_divide_channels(parent); + else + niu_divide_channels(parent, num_10g, num_1g); + + niu_divide_rdc_groups(parent, num_10g, num_1g); + + return 0; + +unknown_vg_1g_port: + pr_err("Cannot identify platform type, 1gport=%d\n", lowest_1g); + return -EINVAL; +} + +static int niu_probe_ports(struct niu *np) +{ + struct niu_parent *parent = np->parent; + int err, i; + + if (parent->port_phy == PORT_PHY_UNKNOWN) { + err = walk_phys(np, parent); + if (err) + return err; + + niu_set_ldg_timer_res(np, 2); + for (i = 0; i <= LDN_MAX; i++) + niu_ldn_irq_enable(np, i, 0); + } + + if (parent->port_phy == PORT_PHY_INVALID) + return -EINVAL; + + return 0; +} + +static int niu_classifier_swstate_init(struct niu *np) +{ + struct niu_classifier *cp = &np->clas; + + cp->tcam_top = (u16) np->port; + cp->tcam_sz = np->parent->tcam_num_entries / np->parent->num_ports; + cp->h1_init = 0xffffffff; + cp->h2_init = 0xffff; + + return fflp_early_init(np); +} + +static void niu_link_config_init(struct niu *np) +{ + struct niu_link_config *lp = &np->link_config; + + lp->advertising = (ADVERTISED_10baseT_Half | + ADVERTISED_10baseT_Full | + ADVERTISED_100baseT_Half | + ADVERTISED_100baseT_Full | + ADVERTISED_1000baseT_Half | + ADVERTISED_1000baseT_Full | + ADVERTISED_10000baseT_Full | + ADVERTISED_Autoneg); + lp->speed = lp->active_speed = SPEED_INVALID; + lp->duplex = DUPLEX_FULL; + lp->active_duplex = DUPLEX_INVALID; + lp->autoneg = 1; +#if 0 + lp->loopback_mode = LOOPBACK_MAC; + lp->active_speed = SPEED_10000; + lp->active_duplex = DUPLEX_FULL; +#else + lp->loopback_mode = LOOPBACK_DISABLED; +#endif +} + +static int niu_init_mac_ipp_pcs_base(struct niu *np) +{ + switch (np->port) { + case 0: + np->mac_regs = np->regs + XMAC_PORT0_OFF; + np->ipp_off = 0x00000; + np->pcs_off = 0x04000; + np->xpcs_off = 0x02000; + break; + + case 1: + np->mac_regs = np->regs + XMAC_PORT1_OFF; + np->ipp_off = 0x08000; + np->pcs_off = 0x0a000; + np->xpcs_off = 0x08000; + break; + + case 2: + np->mac_regs = np->regs + BMAC_PORT2_OFF; + np->ipp_off = 0x04000; + np->pcs_off = 0x0e000; + np->xpcs_off = ~0UL; + break; + + case 3: + np->mac_regs = np->regs + BMAC_PORT3_OFF; + np->ipp_off = 0x0c000; + np->pcs_off = 0x12000; + np->xpcs_off = ~0UL; + break; + + default: + dev_err(np->device, "Port %u is invalid, cannot compute MAC block offset\n", np->port); + return -EINVAL; + } + + return 0; +} + +static void niu_try_msix(struct niu *np, u8 *ldg_num_map) +{ + struct msix_entry msi_vec[NIU_NUM_LDG]; + struct niu_parent *parent = np->parent; + struct pci_dev *pdev = np->pdev; + int i, num_irqs; + u8 first_ldg; + + first_ldg = (NIU_NUM_LDG / parent->num_ports) * np->port; + for (i = 0; i < (NIU_NUM_LDG / parent->num_ports); i++) + ldg_num_map[i] = first_ldg + i; + + num_irqs = (parent->rxchan_per_port[np->port] + + parent->txchan_per_port[np->port] + + (np->port == 0 ? 3 : 1)); + BUG_ON(num_irqs > (NIU_NUM_LDG / parent->num_ports)); + + for (i = 0; i < num_irqs; i++) { + msi_vec[i].vector = 0; + msi_vec[i].entry = i; + } + + num_irqs = pci_enable_msix_range(pdev, msi_vec, 1, num_irqs); + if (num_irqs < 0) { + np->flags &= ~NIU_FLAGS_MSIX; + return; + } + + np->flags |= NIU_FLAGS_MSIX; + for (i = 0; i < num_irqs; i++) + np->ldg[i].irq = msi_vec[i].vector; + np->num_ldg = num_irqs; +} + +static int niu_n2_irq_init(struct niu *np, u8 *ldg_num_map) +{ +#ifdef CONFIG_SPARC64 + struct platform_device *op = np->op; + const u32 *int_prop; + int i; + + int_prop = of_get_property(op->dev.of_node, "interrupts", NULL); + if (!int_prop) + return -ENODEV; + + for (i = 0; i < op->archdata.num_irqs; i++) { + ldg_num_map[i] = int_prop[i]; + np->ldg[i].irq = op->archdata.irqs[i]; + } + + np->num_ldg = op->archdata.num_irqs; + + return 0; +#else + return -EINVAL; +#endif +} + +static int niu_ldg_init(struct niu *np) +{ + struct niu_parent *parent = np->parent; + u8 ldg_num_map[NIU_NUM_LDG]; + int first_chan, num_chan; + int i, err, ldg_rotor; + u8 port; + + np->num_ldg = 1; + np->ldg[0].irq = np->dev->irq; + if (parent->plat_type == PLAT_TYPE_NIU) { + err = niu_n2_irq_init(np, ldg_num_map); + if (err) + return err; + } else + niu_try_msix(np, ldg_num_map); + + port = np->port; + for (i = 0; i < np->num_ldg; i++) { + struct niu_ldg *lp = &np->ldg[i]; + + netif_napi_add(np->dev, &lp->napi, niu_poll, 64); + + lp->np = np; + lp->ldg_num = ldg_num_map[i]; + lp->timer = 2; /* XXX */ + + /* On N2 NIU the firmware has setup the SID mappings so they go + * to the correct values that will route the LDG to the proper + * interrupt in the NCU interrupt table. + */ + if (np->parent->plat_type != PLAT_TYPE_NIU) { + err = niu_set_ldg_sid(np, lp->ldg_num, port, i); + if (err) + return err; + } + } + + /* We adopt the LDG assignment ordering used by the N2 NIU + * 'interrupt' properties because that simplifies a lot of + * things. This ordering is: + * + * MAC + * MIF (if port zero) + * SYSERR (if port zero) + * RX channels + * TX channels + */ + + ldg_rotor = 0; + + err = niu_ldg_assign_ldn(np, parent, ldg_num_map[ldg_rotor], + LDN_MAC(port)); + if (err) + return err; + + ldg_rotor++; + if (ldg_rotor == np->num_ldg) + ldg_rotor = 0; + + if (port == 0) { + err = niu_ldg_assign_ldn(np, parent, + ldg_num_map[ldg_rotor], + LDN_MIF); + if (err) + return err; + + ldg_rotor++; + if (ldg_rotor == np->num_ldg) + ldg_rotor = 0; + + err = niu_ldg_assign_ldn(np, parent, + ldg_num_map[ldg_rotor], + LDN_DEVICE_ERROR); + if (err) + return err; + + ldg_rotor++; + if (ldg_rotor == np->num_ldg) + ldg_rotor = 0; + + } + + first_chan = 0; + for (i = 0; i < port; i++) + first_chan += parent->rxchan_per_port[i]; + num_chan = parent->rxchan_per_port[port]; + + for (i = first_chan; i < (first_chan + num_chan); i++) { + err = niu_ldg_assign_ldn(np, parent, + ldg_num_map[ldg_rotor], + LDN_RXDMA(i)); + if (err) + return err; + ldg_rotor++; + if (ldg_rotor == np->num_ldg) + ldg_rotor = 0; + } + + first_chan = 0; + for (i = 0; i < port; i++) + first_chan += parent->txchan_per_port[i]; + num_chan = parent->txchan_per_port[port]; + for (i = first_chan; i < (first_chan + num_chan); i++) { + err = niu_ldg_assign_ldn(np, parent, + ldg_num_map[ldg_rotor], + LDN_TXDMA(i)); + if (err) + return err; + ldg_rotor++; + if (ldg_rotor == np->num_ldg) + ldg_rotor = 0; + } + + return 0; +} + +static void niu_ldg_free(struct niu *np) +{ + if (np->flags & NIU_FLAGS_MSIX) + pci_disable_msix(np->pdev); +} + +static int niu_get_of_props(struct niu *np) +{ +#ifdef CONFIG_SPARC64 + struct net_device *dev = np->dev; + struct device_node *dp; + const char *phy_type; + const u8 *mac_addr; + const char *model; + int prop_len; + + if (np->parent->plat_type == PLAT_TYPE_NIU) + dp = np->op->dev.of_node; + else + dp = pci_device_to_OF_node(np->pdev); + + phy_type = of_get_property(dp, "phy-type", &prop_len); + if (!phy_type) { + netdev_err(dev, "%s: OF node lacks phy-type property\n", + dp->full_name); + return -EINVAL; + } + + if (!strcmp(phy_type, "none")) + return -ENODEV; + + strcpy(np->vpd.phy_type, phy_type); + + if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) { + netdev_err(dev, "%s: Illegal phy string [%s]\n", + dp->full_name, np->vpd.phy_type); + return -EINVAL; + } + + mac_addr = of_get_property(dp, "local-mac-address", &prop_len); + if (!mac_addr) { + netdev_err(dev, "%s: OF node lacks local-mac-address property\n", + dp->full_name); + return -EINVAL; + } + if (prop_len != dev->addr_len) { + netdev_err(dev, "%s: OF MAC address prop len (%d) is wrong\n", + dp->full_name, prop_len); + } + memcpy(dev->dev_addr, mac_addr, dev->addr_len); + if (!is_valid_ether_addr(&dev->dev_addr[0])) { + netdev_err(dev, "%s: OF MAC address is invalid\n", + dp->full_name); + netdev_err(dev, "%s: [ %pM ]\n", dp->full_name, dev->dev_addr); + return -EINVAL; + } + + model = of_get_property(dp, "model", &prop_len); + + if (model) + strcpy(np->vpd.model, model); + + if (of_find_property(dp, "hot-swappable-phy", &prop_len)) { + np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER | + NIU_FLAGS_HOTPLUG_PHY); + } + + return 0; +#else + return -EINVAL; +#endif +} + +static int niu_get_invariants(struct niu *np) +{ + int err, have_props; + u32 offset; + + err = niu_get_of_props(np); + if (err == -ENODEV) + return err; + + have_props = !err; + + err = niu_init_mac_ipp_pcs_base(np); + if (err) + return err; + + if (have_props) { + err = niu_get_and_validate_port(np); + if (err) + return err; + + } else { + if (np->parent->plat_type == PLAT_TYPE_NIU) + return -EINVAL; + + nw64(ESPC_PIO_EN, ESPC_PIO_EN_ENABLE); + offset = niu_pci_vpd_offset(np); + netif_printk(np, probe, KERN_DEBUG, np->dev, + "%s() VPD offset [%08x]\n", __func__, offset); + if (offset) + niu_pci_vpd_fetch(np, offset); + nw64(ESPC_PIO_EN, 0); + + if (np->flags & NIU_FLAGS_VPD_VALID) { + niu_pci_vpd_validate(np); + err = niu_get_and_validate_port(np); + if (err) + return err; + } + + if (!(np->flags & NIU_FLAGS_VPD_VALID)) { + err = niu_get_and_validate_port(np); + if (err) + return err; + err = niu_pci_probe_sprom(np); + if (err) + return err; + } + } + + err = niu_probe_ports(np); + if (err) + return err; + + niu_ldg_init(np); + + niu_classifier_swstate_init(np); + niu_link_config_init(np); + + err = niu_determine_phy_disposition(np); + if (!err) + err = niu_init_link(np); + + return err; +} + +static LIST_HEAD(niu_parent_list); +static DEFINE_MUTEX(niu_parent_lock); +static int niu_parent_index; + +static ssize_t show_port_phy(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct platform_device *plat_dev = to_platform_device(dev); + struct niu_parent *p = dev_get_platdata(&plat_dev->dev); + u32 port_phy = p->port_phy; + char *orig_buf = buf; + int i; + + if (port_phy == PORT_PHY_UNKNOWN || + port_phy == PORT_PHY_INVALID) + return 0; + + for (i = 0; i < p->num_ports; i++) { + const char *type_str; + int type; + + type = phy_decode(port_phy, i); + if (type == PORT_TYPE_10G) + type_str = "10G"; + else + type_str = "1G"; + buf += sprintf(buf, + (i == 0) ? "%s" : " %s", + type_str); + } + buf += sprintf(buf, "\n"); + return buf - orig_buf; +} + +static ssize_t show_plat_type(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct platform_device *plat_dev = to_platform_device(dev); + struct niu_parent *p = dev_get_platdata(&plat_dev->dev); + const char *type_str; + + switch (p->plat_type) { + case PLAT_TYPE_ATLAS: + type_str = "atlas"; + break; + case PLAT_TYPE_NIU: + type_str = "niu"; + break; + case PLAT_TYPE_VF_P0: + type_str = "vf_p0"; + break; + case PLAT_TYPE_VF_P1: + type_str = "vf_p1"; + break; + default: + type_str = "unknown"; + break; + } + + return sprintf(buf, "%s\n", type_str); +} + +static ssize_t __show_chan_per_port(struct device *dev, + struct device_attribute *attr, char *buf, + int rx) +{ + struct platform_device *plat_dev = to_platform_device(dev); + struct niu_parent *p = dev_get_platdata(&plat_dev->dev); + char *orig_buf = buf; + u8 *arr; + int i; + + arr = (rx ? p->rxchan_per_port : p->txchan_per_port); + + for (i = 0; i < p->num_ports; i++) { + buf += sprintf(buf, + (i == 0) ? "%d" : " %d", + arr[i]); + } + buf += sprintf(buf, "\n"); + + return buf - orig_buf; +} + +static ssize_t show_rxchan_per_port(struct device *dev, + struct device_attribute *attr, char *buf) +{ + return __show_chan_per_port(dev, attr, buf, 1); +} + +static ssize_t show_txchan_per_port(struct device *dev, + struct device_attribute *attr, char *buf) +{ + return __show_chan_per_port(dev, attr, buf, 1); +} + +static ssize_t show_num_ports(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct platform_device *plat_dev = to_platform_device(dev); + struct niu_parent *p = dev_get_platdata(&plat_dev->dev); + + return sprintf(buf, "%d\n", p->num_ports); +} + +static struct device_attribute niu_parent_attributes[] = { + __ATTR(port_phy, S_IRUGO, show_port_phy, NULL), + __ATTR(plat_type, S_IRUGO, show_plat_type, NULL), + __ATTR(rxchan_per_port, S_IRUGO, show_rxchan_per_port, NULL), + __ATTR(txchan_per_port, S_IRUGO, show_txchan_per_port, NULL), + __ATTR(num_ports, S_IRUGO, show_num_ports, NULL), + {} +}; + +static struct niu_parent *niu_new_parent(struct niu *np, + union niu_parent_id *id, u8 ptype) +{ + struct platform_device *plat_dev; + struct niu_parent *p; + int i; + + plat_dev = platform_device_register_simple("niu-board", niu_parent_index, + NULL, 0); + if (IS_ERR(plat_dev)) + return NULL; + + for (i = 0; niu_parent_attributes[i].attr.name; i++) { + int err = device_create_file(&plat_dev->dev, + &niu_parent_attributes[i]); + if (err) + goto fail_unregister; + } + + p = kzalloc(sizeof(*p), GFP_KERNEL); + if (!p) + goto fail_unregister; + + p->index = niu_parent_index++; + + plat_dev->dev.platform_data = p; + p->plat_dev = plat_dev; + + memcpy(&p->id, id, sizeof(*id)); + p->plat_type = ptype; + INIT_LIST_HEAD(&p->list); + atomic_set(&p->refcnt, 0); + list_add(&p->list, &niu_parent_list); + spin_lock_init(&p->lock); + + p->rxdma_clock_divider = 7500; + + p->tcam_num_entries = NIU_PCI_TCAM_ENTRIES; + if (p->plat_type == PLAT_TYPE_NIU) + p->tcam_num_entries = NIU_NONPCI_TCAM_ENTRIES; + + for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) { + int index = i - CLASS_CODE_USER_PROG1; + + p->tcam_key[index] = TCAM_KEY_TSEL; + p->flow_key[index] = (FLOW_KEY_IPSA | + FLOW_KEY_IPDA | + FLOW_KEY_PROTO | + (FLOW_KEY_L4_BYTE12 << + FLOW_KEY_L4_0_SHIFT) | + (FLOW_KEY_L4_BYTE12 << + FLOW_KEY_L4_1_SHIFT)); + } + + for (i = 0; i < LDN_MAX + 1; i++) + p->ldg_map[i] = LDG_INVALID; + + return p; + +fail_unregister: + platform_device_unregister(plat_dev); + return NULL; +} + +static struct niu_parent *niu_get_parent(struct niu *np, + union niu_parent_id *id, u8 ptype) +{ + struct niu_parent *p, *tmp; + int port = np->port; + + mutex_lock(&niu_parent_lock); + p = NULL; + list_for_each_entry(tmp, &niu_parent_list, list) { + if (!memcmp(id, &tmp->id, sizeof(*id))) { + p = tmp; + break; + } + } + if (!p) + p = niu_new_parent(np, id, ptype); + + if (p) { + char port_name[6]; + int err; + + sprintf(port_name, "port%d", port); + err = sysfs_create_link(&p->plat_dev->dev.kobj, + &np->device->kobj, + port_name); + if (!err) { + p->ports[port] = np; + atomic_inc(&p->refcnt); + } + } + mutex_unlock(&niu_parent_lock); + + return p; +} + +static void niu_put_parent(struct niu *np) +{ + struct niu_parent *p = np->parent; + u8 port = np->port; + char port_name[6]; + + BUG_ON(!p || p->ports[port] != np); + + netif_printk(np, probe, KERN_DEBUG, np->dev, + "%s() port[%u]\n", __func__, port); + + sprintf(port_name, "port%d", port); + + mutex_lock(&niu_parent_lock); + + sysfs_remove_link(&p->plat_dev->dev.kobj, port_name); + + p->ports[port] = NULL; + np->parent = NULL; + + if (atomic_dec_and_test(&p->refcnt)) { + list_del(&p->list); + platform_device_unregister(p->plat_dev); + } + + mutex_unlock(&niu_parent_lock); +} + +static void *niu_pci_alloc_coherent(struct device *dev, size_t size, + u64 *handle, gfp_t flag) +{ + dma_addr_t dh; + void *ret; + + ret = dma_alloc_coherent(dev, size, &dh, flag); + if (ret) + *handle = dh; + return ret; +} + +static void niu_pci_free_coherent(struct device *dev, size_t size, + void *cpu_addr, u64 handle) +{ + dma_free_coherent(dev, size, cpu_addr, handle); +} + +static u64 niu_pci_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, + enum dma_data_direction direction) +{ + return dma_map_page(dev, page, offset, size, direction); +} + +static void niu_pci_unmap_page(struct device *dev, u64 dma_address, + size_t size, enum dma_data_direction direction) +{ + dma_unmap_page(dev, dma_address, size, direction); +} + +static u64 niu_pci_map_single(struct device *dev, void *cpu_addr, + size_t size, + enum dma_data_direction direction) +{ + return dma_map_single(dev, cpu_addr, size, direction); +} + +static void niu_pci_unmap_single(struct device *dev, u64 dma_address, + size_t size, + enum dma_data_direction direction) +{ + dma_unmap_single(dev, dma_address, size, direction); +} + +static const struct niu_ops niu_pci_ops = { + .alloc_coherent = niu_pci_alloc_coherent, + .free_coherent = niu_pci_free_coherent, + .map_page = niu_pci_map_page, + .unmap_page = niu_pci_unmap_page, + .map_single = niu_pci_map_single, + .unmap_single = niu_pci_unmap_single, +}; + +static void niu_driver_version(void) +{ + static int niu_version_printed; + + if (niu_version_printed++ == 0) + pr_info("%s", version); +} + +static struct net_device *niu_alloc_and_init(struct device *gen_dev, + struct pci_dev *pdev, + struct platform_device *op, + const struct niu_ops *ops, u8 port) +{ + struct net_device *dev; + struct niu *np; + + dev = alloc_etherdev_mq(sizeof(struct niu), NIU_NUM_TXCHAN); + if (!dev) + return NULL; + + SET_NETDEV_DEV(dev, gen_dev); + + np = netdev_priv(dev); + np->dev = dev; + np->pdev = pdev; + np->op = op; + np->device = gen_dev; + np->ops = ops; + + np->msg_enable = niu_debug; + + spin_lock_init(&np->lock); + INIT_WORK(&np->reset_task, niu_reset_task); + + np->port = port; + + return dev; +} + +static const struct net_device_ops niu_netdev_ops = { + .ndo_open = niu_open, + .ndo_stop = niu_close, + .ndo_start_xmit = niu_start_xmit, + .ndo_get_stats64 = niu_get_stats, + .ndo_set_rx_mode = niu_set_rx_mode, + .ndo_validate_addr = eth_validate_addr, + .ndo_set_mac_address = niu_set_mac_addr, + .ndo_do_ioctl = niu_ioctl, + .ndo_tx_timeout = niu_tx_timeout, + .ndo_change_mtu = niu_change_mtu, +}; + +static void niu_assign_netdev_ops(struct net_device *dev) +{ + dev->netdev_ops = &niu_netdev_ops; + dev->ethtool_ops = &niu_ethtool_ops; + dev->watchdog_timeo = NIU_TX_TIMEOUT; +} + +static void niu_device_announce(struct niu *np) +{ + struct net_device *dev = np->dev; + + pr_info("%s: NIU Ethernet %pM\n", dev->name, dev->dev_addr); + + if (np->parent->plat_type == PLAT_TYPE_ATCA_CP3220) { + pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n", + dev->name, + (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"), + (np->flags & NIU_FLAGS_10G ? "10G" : "1G"), + (np->flags & NIU_FLAGS_FIBER ? "RGMII FIBER" : "SERDES"), + (np->mac_xcvr == MAC_XCVR_MII ? "MII" : + (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")), + np->vpd.phy_type); + } else { + pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n", + dev->name, + (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"), + (np->flags & NIU_FLAGS_10G ? "10G" : "1G"), + (np->flags & NIU_FLAGS_FIBER ? "FIBER" : + (np->flags & NIU_FLAGS_XCVR_SERDES ? "SERDES" : + "COPPER")), + (np->mac_xcvr == MAC_XCVR_MII ? "MII" : + (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")), + np->vpd.phy_type); + } +} + +static void niu_set_basic_features(struct net_device *dev) +{ + dev->hw_features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_RXHASH; + dev->features |= dev->hw_features | NETIF_F_RXCSUM; +} + +static int niu_pci_init_one(struct pci_dev *pdev, + const struct pci_device_id *ent) +{ + union niu_parent_id parent_id; + struct net_device *dev; + struct niu *np; + int err; + u64 dma_mask; + + niu_driver_version(); + + err = pci_enable_device(pdev); + if (err) { + dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n"); + return err; + } + + if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) || + !(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) { + dev_err(&pdev->dev, "Cannot find proper PCI device base addresses, aborting\n"); + err = -ENODEV; + goto err_out_disable_pdev; + } + + err = pci_request_regions(pdev, DRV_MODULE_NAME); + if (err) { + dev_err(&pdev->dev, "Cannot obtain PCI resources, aborting\n"); + goto err_out_disable_pdev; + } + + if (!pci_is_pcie(pdev)) { + dev_err(&pdev->dev, "Cannot find PCI Express capability, aborting\n"); + err = -ENODEV; + goto err_out_free_res; + } + + dev = niu_alloc_and_init(&pdev->dev, pdev, NULL, + &niu_pci_ops, PCI_FUNC(pdev->devfn)); + if (!dev) { + err = -ENOMEM; + goto err_out_free_res; + } + np = netdev_priv(dev); + + memset(&parent_id, 0, sizeof(parent_id)); + parent_id.pci.domain = pci_domain_nr(pdev->bus); + parent_id.pci.bus = pdev->bus->number; + parent_id.pci.device = PCI_SLOT(pdev->devfn); + + np->parent = niu_get_parent(np, &parent_id, + PLAT_TYPE_ATLAS); + if (!np->parent) { + err = -ENOMEM; + goto err_out_free_dev; + } + + pcie_capability_clear_and_set_word(pdev, PCI_EXP_DEVCTL, + PCI_EXP_DEVCTL_NOSNOOP_EN, + PCI_EXP_DEVCTL_CERE | PCI_EXP_DEVCTL_NFERE | + PCI_EXP_DEVCTL_FERE | PCI_EXP_DEVCTL_URRE | + PCI_EXP_DEVCTL_RELAX_EN); + + dma_mask = DMA_BIT_MASK(44); + err = pci_set_dma_mask(pdev, dma_mask); + if (!err) { + dev->features |= NETIF_F_HIGHDMA; + err = pci_set_consistent_dma_mask(pdev, dma_mask); + if (err) { + dev_err(&pdev->dev, "Unable to obtain 44 bit DMA for consistent allocations, aborting\n"); + goto err_out_release_parent; + } + } + if (err) { + err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); + if (err) { + dev_err(&pdev->dev, "No usable DMA configuration, aborting\n"); + goto err_out_release_parent; + } + } + + niu_set_basic_features(dev); + + dev->priv_flags |= IFF_UNICAST_FLT; + + np->regs = pci_ioremap_bar(pdev, 0); + if (!np->regs) { + dev_err(&pdev->dev, "Cannot map device registers, aborting\n"); + err = -ENOMEM; + goto err_out_release_parent; + } + + pci_set_master(pdev); + pci_save_state(pdev); + + dev->irq = pdev->irq; + + niu_assign_netdev_ops(dev); + + err = niu_get_invariants(np); + if (err) { + if (err != -ENODEV) + dev_err(&pdev->dev, "Problem fetching invariants of chip, aborting\n"); + goto err_out_iounmap; + } + + err = register_netdev(dev); + if (err) { + dev_err(&pdev->dev, "Cannot register net device, aborting\n"); + goto err_out_iounmap; + } + + pci_set_drvdata(pdev, dev); + + niu_device_announce(np); + + return 0; + +err_out_iounmap: + if (np->regs) { + iounmap(np->regs); + np->regs = NULL; + } + +err_out_release_parent: + niu_put_parent(np); + +err_out_free_dev: + free_netdev(dev); + +err_out_free_res: + pci_release_regions(pdev); + +err_out_disable_pdev: + pci_disable_device(pdev); + + return err; +} + +static void niu_pci_remove_one(struct pci_dev *pdev) +{ + struct net_device *dev = pci_get_drvdata(pdev); + + if (dev) { + struct niu *np = netdev_priv(dev); + + unregister_netdev(dev); + if (np->regs) { + iounmap(np->regs); + np->regs = NULL; + } + + niu_ldg_free(np); + + niu_put_parent(np); + + free_netdev(dev); + pci_release_regions(pdev); + pci_disable_device(pdev); + } +} + +static int niu_suspend(struct pci_dev *pdev, pm_message_t state) +{ + struct net_device *dev = pci_get_drvdata(pdev); + struct niu *np = netdev_priv(dev); + unsigned long flags; + + if (!netif_running(dev)) + return 0; + + flush_work(&np->reset_task); + niu_netif_stop(np); + + del_timer_sync(&np->timer); + + spin_lock_irqsave(&np->lock, flags); + niu_enable_interrupts(np, 0); + spin_unlock_irqrestore(&np->lock, flags); + + netif_device_detach(dev); + + spin_lock_irqsave(&np->lock, flags); + niu_stop_hw(np); + spin_unlock_irqrestore(&np->lock, flags); + + pci_save_state(pdev); + + return 0; +} + +static int niu_resume(struct pci_dev *pdev) +{ + struct net_device *dev = pci_get_drvdata(pdev); + struct niu *np = netdev_priv(dev); + unsigned long flags; + int err; + + if (!netif_running(dev)) + return 0; + + pci_restore_state(pdev); + + netif_device_attach(dev); + + spin_lock_irqsave(&np->lock, flags); + + err = niu_init_hw(np); + if (!err) { + np->timer.expires = jiffies + HZ; + add_timer(&np->timer); + niu_netif_start(np); + } + + spin_unlock_irqrestore(&np->lock, flags); + + return err; +} + +static struct pci_driver niu_pci_driver = { + .name = DRV_MODULE_NAME, + .id_table = niu_pci_tbl, + .probe = niu_pci_init_one, + .remove = niu_pci_remove_one, + .suspend = niu_suspend, + .resume = niu_resume, +}; + +#ifdef CONFIG_SPARC64 +static void *niu_phys_alloc_coherent(struct device *dev, size_t size, + u64 *dma_addr, gfp_t flag) +{ + unsigned long order = get_order(size); + unsigned long page = __get_free_pages(flag, order); + + if (page == 0UL) + return NULL; + memset((char *)page, 0, PAGE_SIZE << order); + *dma_addr = __pa(page); + + return (void *) page; +} + +static void niu_phys_free_coherent(struct device *dev, size_t size, + void *cpu_addr, u64 handle) +{ + unsigned long order = get_order(size); + + free_pages((unsigned long) cpu_addr, order); +} + +static u64 niu_phys_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, + enum dma_data_direction direction) +{ + return page_to_phys(page) + offset; +} + +static void niu_phys_unmap_page(struct device *dev, u64 dma_address, + size_t size, enum dma_data_direction direction) +{ + /* Nothing to do. */ +} + +static u64 niu_phys_map_single(struct device *dev, void *cpu_addr, + size_t size, + enum dma_data_direction direction) +{ + return __pa(cpu_addr); +} + +static void niu_phys_unmap_single(struct device *dev, u64 dma_address, + size_t size, + enum dma_data_direction direction) +{ + /* Nothing to do. */ +} + +static const struct niu_ops niu_phys_ops = { + .alloc_coherent = niu_phys_alloc_coherent, + .free_coherent = niu_phys_free_coherent, + .map_page = niu_phys_map_page, + .unmap_page = niu_phys_unmap_page, + .map_single = niu_phys_map_single, + .unmap_single = niu_phys_unmap_single, +}; + +static int niu_of_probe(struct platform_device *op) +{ + union niu_parent_id parent_id; + struct net_device *dev; + struct niu *np; + const u32 *reg; + int err; + + niu_driver_version(); + + reg = of_get_property(op->dev.of_node, "reg", NULL); + if (!reg) { + dev_err(&op->dev, "%s: No 'reg' property, aborting\n", + op->dev.of_node->full_name); + return -ENODEV; + } + + dev = niu_alloc_and_init(&op->dev, NULL, op, + &niu_phys_ops, reg[0] & 0x1); + if (!dev) { + err = -ENOMEM; + goto err_out; + } + np = netdev_priv(dev); + + memset(&parent_id, 0, sizeof(parent_id)); + parent_id.of = of_get_parent(op->dev.of_node); + + np->parent = niu_get_parent(np, &parent_id, + PLAT_TYPE_NIU); + if (!np->parent) { + err = -ENOMEM; + goto err_out_free_dev; + } + + niu_set_basic_features(dev); + + np->regs = of_ioremap(&op->resource[1], 0, + resource_size(&op->resource[1]), + "niu regs"); + if (!np->regs) { + dev_err(&op->dev, "Cannot map device registers, aborting\n"); + err = -ENOMEM; + goto err_out_release_parent; + } + + np->vir_regs_1 = of_ioremap(&op->resource[2], 0, + resource_size(&op->resource[2]), + "niu vregs-1"); + if (!np->vir_regs_1) { + dev_err(&op->dev, "Cannot map device vir registers 1, aborting\n"); + err = -ENOMEM; + goto err_out_iounmap; + } + + np->vir_regs_2 = of_ioremap(&op->resource[3], 0, + resource_size(&op->resource[3]), + "niu vregs-2"); + if (!np->vir_regs_2) { + dev_err(&op->dev, "Cannot map device vir registers 2, aborting\n"); + err = -ENOMEM; + goto err_out_iounmap; + } + + niu_assign_netdev_ops(dev); + + err = niu_get_invariants(np); + if (err) { + if (err != -ENODEV) + dev_err(&op->dev, "Problem fetching invariants of chip, aborting\n"); + goto err_out_iounmap; + } + + err = register_netdev(dev); + if (err) { + dev_err(&op->dev, "Cannot register net device, aborting\n"); + goto err_out_iounmap; + } + + platform_set_drvdata(op, dev); + + niu_device_announce(np); + + return 0; + +err_out_iounmap: + if (np->vir_regs_1) { + of_iounmap(&op->resource[2], np->vir_regs_1, + resource_size(&op->resource[2])); + np->vir_regs_1 = NULL; + } + + if (np->vir_regs_2) { + of_iounmap(&op->resource[3], np->vir_regs_2, + resource_size(&op->resource[3])); + np->vir_regs_2 = NULL; + } + + if (np->regs) { + of_iounmap(&op->resource[1], np->regs, + resource_size(&op->resource[1])); + np->regs = NULL; + } + +err_out_release_parent: + niu_put_parent(np); + +err_out_free_dev: + free_netdev(dev); + +err_out: + return err; +} + +static int niu_of_remove(struct platform_device *op) +{ + struct net_device *dev = platform_get_drvdata(op); + + if (dev) { + struct niu *np = netdev_priv(dev); + + unregister_netdev(dev); + + if (np->vir_regs_1) { + of_iounmap(&op->resource[2], np->vir_regs_1, + resource_size(&op->resource[2])); + np->vir_regs_1 = NULL; + } + + if (np->vir_regs_2) { + of_iounmap(&op->resource[3], np->vir_regs_2, + resource_size(&op->resource[3])); + np->vir_regs_2 = NULL; + } + + if (np->regs) { + of_iounmap(&op->resource[1], np->regs, + resource_size(&op->resource[1])); + np->regs = NULL; + } + + niu_ldg_free(np); + + niu_put_parent(np); + + free_netdev(dev); + } + return 0; +} + +static const struct of_device_id niu_match[] = { + { + .name = "network", + .compatible = "SUNW,niusl", + }, + {}, +}; +MODULE_DEVICE_TABLE(of, niu_match); + +static struct platform_driver niu_of_driver = { + .driver = { + .name = "niu", + .of_match_table = niu_match, + }, + .probe = niu_of_probe, + .remove = niu_of_remove, +}; + +#endif /* CONFIG_SPARC64 */ + +static int __init niu_init(void) +{ + int err = 0; + + BUILD_BUG_ON(PAGE_SIZE < 4 * 1024); + + niu_debug = netif_msg_init(debug, NIU_MSG_DEFAULT); + +#ifdef CONFIG_SPARC64 + err = platform_driver_register(&niu_of_driver); +#endif + + if (!err) { + err = pci_register_driver(&niu_pci_driver); +#ifdef CONFIG_SPARC64 + if (err) + platform_driver_unregister(&niu_of_driver); +#endif + } + + return err; +} + +static void __exit niu_exit(void) +{ + pci_unregister_driver(&niu_pci_driver); +#ifdef CONFIG_SPARC64 + platform_driver_unregister(&niu_of_driver); +#endif +} + +module_init(niu_init); +module_exit(niu_exit); |