diff options
Diffstat (limited to 'qemu/roms/ipxe/src/drivers/net/realtek.c')
| -rw-r--r-- | qemu/roms/ipxe/src/drivers/net/realtek.c | 1262 |
1 files changed, 0 insertions, 1262 deletions
diff --git a/qemu/roms/ipxe/src/drivers/net/realtek.c b/qemu/roms/ipxe/src/drivers/net/realtek.c deleted file mode 100644 index 022b59324..000000000 --- a/qemu/roms/ipxe/src/drivers/net/realtek.c +++ /dev/null @@ -1,1262 +0,0 @@ -/* - * Copyright (C) 2012 Michael Brown <mbrown@fensystems.co.uk>. - * - * (EEPROM code originally implemented for rtl8139.c) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of the - * License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA. - * - * You can also choose to distribute this program under the terms of - * the Unmodified Binary Distribution Licence (as given in the file - * COPYING.UBDL), provided that you have satisfied its requirements. - */ - -FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); - -#include <stdint.h> -#include <string.h> -#include <unistd.h> -#include <errno.h> -#include <byteswap.h> -#include <ipxe/netdevice.h> -#include <ipxe/ethernet.h> -#include <ipxe/if_ether.h> -#include <ipxe/iobuf.h> -#include <ipxe/malloc.h> -#include <ipxe/pci.h> -#include <ipxe/nvs.h> -#include <ipxe/threewire.h> -#include <ipxe/bitbash.h> -#include <ipxe/mii.h> -#include "realtek.h" - -/** @file - * - * Realtek 10/100/1000 network card driver - * - * Based on the following datasheets: - * - * http://www.datasheetarchive.com/dl/Datasheets-8/DSA-153536.pdf - * http://www.datasheetarchive.com/indexdl/Datasheet-028/DSA00494723.pdf - */ - -/****************************************************************************** - * - * Debugging - * - ****************************************************************************** - */ - -/** - * Dump all registers (for debugging) - * - * @v rtl Realtek device - */ -static __attribute__ (( unused )) void realtek_dump ( struct realtek_nic *rtl ){ - uint8_t regs[256]; - unsigned int i; - - /* Do nothing unless debug output is enabled */ - if ( ! DBG_LOG ) - return; - - /* Dump registers (via byte accesses; may not work for all registers) */ - for ( i = 0 ; i < sizeof ( regs ) ; i++ ) - regs[i] = readb ( rtl->regs + i ); - DBGC ( rtl, "REALTEK %p register dump:\n", rtl ); - DBGC_HDA ( rtl, 0, regs, sizeof ( regs ) ); -} - -/****************************************************************************** - * - * EEPROM interface - * - ****************************************************************************** - */ - -/** Pin mapping for SPI bit-bashing interface */ -static const uint8_t realtek_eeprom_bits[] = { - [SPI_BIT_SCLK] = RTL_9346CR_EESK, - [SPI_BIT_MOSI] = RTL_9346CR_EEDI, - [SPI_BIT_MISO] = RTL_9346CR_EEDO, - [SPI_BIT_SS(0)] = RTL_9346CR_EECS, -}; - -/** - * Open bit-bashing interface - * - * @v basher Bit-bashing interface - */ -static void realtek_spi_open_bit ( struct bit_basher *basher ) { - struct realtek_nic *rtl = container_of ( basher, struct realtek_nic, - spibit.basher ); - - /* Enable EEPROM access */ - writeb ( RTL_9346CR_EEM_EEPROM, rtl->regs + RTL_9346CR ); - readb ( rtl->regs + RTL_9346CR ); /* Ensure write reaches chip */ -} - -/** - * Close bit-bashing interface - * - * @v basher Bit-bashing interface - */ -static void realtek_spi_close_bit ( struct bit_basher *basher ) { - struct realtek_nic *rtl = container_of ( basher, struct realtek_nic, - spibit.basher ); - - /* Disable EEPROM access */ - writeb ( RTL_9346CR_EEM_NORMAL, rtl->regs + RTL_9346CR ); - readb ( rtl->regs + RTL_9346CR ); /* Ensure write reaches chip */ -} - -/** - * Read input bit - * - * @v basher Bit-bashing interface - * @v bit_id Bit number - * @ret zero Input is a logic 0 - * @ret non-zero Input is a logic 1 - */ -static int realtek_spi_read_bit ( struct bit_basher *basher, - unsigned int bit_id ) { - struct realtek_nic *rtl = container_of ( basher, struct realtek_nic, - spibit.basher ); - uint8_t mask = realtek_eeprom_bits[bit_id]; - uint8_t reg; - - DBG_DISABLE ( DBGLVL_IO ); - reg = readb ( rtl->regs + RTL_9346CR ); - DBG_ENABLE ( DBGLVL_IO ); - return ( reg & mask ); -} - -/** - * Set/clear output bit - * - * @v basher Bit-bashing interface - * @v bit_id Bit number - * @v data Value to write - */ -static void realtek_spi_write_bit ( struct bit_basher *basher, - unsigned int bit_id, unsigned long data ) { - struct realtek_nic *rtl = container_of ( basher, struct realtek_nic, - spibit.basher ); - uint8_t mask = realtek_eeprom_bits[bit_id]; - uint8_t reg; - - DBG_DISABLE ( DBGLVL_IO ); - reg = readb ( rtl->regs + RTL_9346CR ); - reg &= ~mask; - reg |= ( data & mask ); - writeb ( reg, rtl->regs + RTL_9346CR ); - readb ( rtl->regs + RTL_9346CR ); /* Ensure write reaches chip */ - DBG_ENABLE ( DBGLVL_IO ); -} - -/** SPI bit-bashing interface */ -static struct bit_basher_operations realtek_basher_ops = { - .open = realtek_spi_open_bit, - .close = realtek_spi_close_bit, - .read = realtek_spi_read_bit, - .write = realtek_spi_write_bit, -}; - -/** - * Initialise EEPROM - * - * @v netdev Network device - * @ret rc Return status code - */ -static int realtek_init_eeprom ( struct net_device *netdev ) { - struct realtek_nic *rtl = netdev->priv; - uint16_t id; - int rc; - - /* Initialise SPI bit-bashing interface */ - rtl->spibit.basher.op = &realtek_basher_ops; - rtl->spibit.bus.mode = SPI_MODE_THREEWIRE; - init_spi_bit_basher ( &rtl->spibit ); - - /* Detect EEPROM type and initialise three-wire device */ - if ( readl ( rtl->regs + RTL_RCR ) & RTL_RCR_9356SEL ) { - DBGC ( rtl, "REALTEK %p EEPROM is a 93C56\n", rtl ); - init_at93c56 ( &rtl->eeprom, 16 ); - } else { - DBGC ( rtl, "REALTEK %p EEPROM is a 93C46\n", rtl ); - init_at93c46 ( &rtl->eeprom, 16 ); - } - - /* Check for EEPROM presence. Some onboard NICs will have no - * EEPROM connected, with the BIOS being responsible for - * programming the initial register values. - */ - if ( ( rc = nvs_read ( &rtl->eeprom.nvs, RTL_EEPROM_ID, - &id, sizeof ( id ) ) ) != 0 ) { - DBGC ( rtl, "REALTEK %p could not read EEPROM ID: %s\n", - rtl, strerror ( rc ) ); - return rc; - } - if ( id != cpu_to_le16 ( RTL_EEPROM_ID_MAGIC ) ) { - DBGC ( rtl, "REALTEK %p EEPROM ID incorrect (%#04x); assuming " - "no EEPROM\n", rtl, le16_to_cpu ( id ) ); - return -ENODEV; - } - - /* Initialise space for non-volatile options, if available - * - * We use offset 0x40 (i.e. address 0x20), length 0x40. This - * block is marked as VPD in the Realtek datasheets, so we use - * it only if we detect that the card is not supporting VPD. - */ - if ( readb ( rtl->regs + RTL_CONFIG1 ) & RTL_CONFIG1_VPD ) { - DBGC ( rtl, "REALTEK %p EEPROM in use for VPD; cannot use " - "for options\n", rtl ); - } else { - nvo_init ( &rtl->nvo, &rtl->eeprom.nvs, RTL_EEPROM_VPD, - RTL_EEPROM_VPD_LEN, NULL, &netdev->refcnt ); - } - - return 0; -} - -/****************************************************************************** - * - * MII interface - * - ****************************************************************************** - */ - -/** - * Read from MII register - * - * @v mii MII interface - * @v reg Register address - * @ret value Data read, or negative error - */ -static int realtek_mii_read ( struct mii_interface *mii, unsigned int reg ) { - struct realtek_nic *rtl = container_of ( mii, struct realtek_nic, mii ); - unsigned int i; - uint32_t value; - - /* Fail if PHYAR register is not present */ - if ( ! rtl->have_phy_regs ) - return -ENOTSUP; - - /* Initiate read */ - writel ( RTL_PHYAR_VALUE ( 0, reg, 0 ), rtl->regs + RTL_PHYAR ); - - /* Wait for read to complete */ - for ( i = 0 ; i < RTL_MII_MAX_WAIT_US ; i++ ) { - - /* If read is not complete, delay 1us and retry */ - value = readl ( rtl->regs + RTL_PHYAR ); - if ( ! ( value & RTL_PHYAR_FLAG ) ) { - udelay ( 1 ); - continue; - } - - /* Return register value */ - return ( RTL_PHYAR_DATA ( value ) ); - } - - DBGC ( rtl, "REALTEK %p timed out waiting for MII read\n", rtl ); - return -ETIMEDOUT; -} - -/** - * Write to MII register - * - * @v mii MII interface - * @v reg Register address - * @v data Data to write - * @ret rc Return status code - */ -static int realtek_mii_write ( struct mii_interface *mii, unsigned int reg, - unsigned int data) { - struct realtek_nic *rtl = container_of ( mii, struct realtek_nic, mii ); - unsigned int i; - - /* Fail if PHYAR register is not present */ - if ( ! rtl->have_phy_regs ) - return -ENOTSUP; - - /* Initiate write */ - writel ( RTL_PHYAR_VALUE ( RTL_PHYAR_FLAG, reg, data ), - rtl->regs + RTL_PHYAR ); - - /* Wait for write to complete */ - for ( i = 0 ; i < RTL_MII_MAX_WAIT_US ; i++ ) { - - /* If write is not complete, delay 1us and retry */ - if ( readl ( rtl->regs + RTL_PHYAR ) & RTL_PHYAR_FLAG ) { - udelay ( 1 ); - continue; - } - - return 0; - } - - DBGC ( rtl, "REALTEK %p timed out waiting for MII write\n", rtl ); - return -ETIMEDOUT; -} - -/** Realtek MII operations */ -static struct mii_operations realtek_mii_operations = { - .read = realtek_mii_read, - .write = realtek_mii_write, -}; - -/****************************************************************************** - * - * Device reset - * - ****************************************************************************** - */ - -/** - * Reset hardware - * - * @v rtl Realtek device - * @ret rc Return status code - */ -static int realtek_reset ( struct realtek_nic *rtl ) { - unsigned int i; - - /* Issue reset */ - writeb ( RTL_CR_RST, rtl->regs + RTL_CR ); - - /* Wait for reset to complete */ - for ( i = 0 ; i < RTL_RESET_MAX_WAIT_MS ; i++ ) { - - /* If reset is not complete, delay 1ms and retry */ - if ( readb ( rtl->regs + RTL_CR ) & RTL_CR_RST ) { - mdelay ( 1 ); - continue; - } - - return 0; - } - - DBGC ( rtl, "REALTEK %p timed out waiting for reset\n", rtl ); - return -ETIMEDOUT; -} - -/** - * Configure PHY for Gigabit operation - * - * @v rtl Realtek device - * @ret rc Return status code - */ -static int realtek_phy_speed ( struct realtek_nic *rtl ) { - int ctrl1000; - int rc; - - /* Read CTRL1000 register */ - ctrl1000 = mii_read ( &rtl->mii, MII_CTRL1000 ); - if ( ctrl1000 < 0 ) { - rc = ctrl1000; - DBGC ( rtl, "REALTEK %p could not read CTRL1000: %s\n", - rtl, strerror ( rc ) ); - return rc; - } - - /* Advertise 1000Mbps speeds */ - ctrl1000 |= ( ADVERTISE_1000FULL | ADVERTISE_1000HALF ); - if ( ( rc = mii_write ( &rtl->mii, MII_CTRL1000, ctrl1000 ) ) != 0 ) { - DBGC ( rtl, "REALTEK %p could not write CTRL1000: %s\n", - rtl, strerror ( rc ) ); - return rc; - } - - return 0; -} - -/** - * Reset PHY - * - * @v rtl Realtek device - * @ret rc Return status code - */ -static int realtek_phy_reset ( struct realtek_nic *rtl ) { - int rc; - - /* Do nothing if we have no separate PHY register access */ - if ( ! rtl->have_phy_regs ) - return 0; - - /* Perform MII reset */ - if ( ( rc = mii_reset ( &rtl->mii ) ) != 0 ) { - DBGC ( rtl, "REALTEK %p could not reset MII: %s\n", - rtl, strerror ( rc ) ); - return rc; - } - - /* Some cards (e.g. RTL8169SC) do not advertise Gigabit by - * default. Try to enable advertisement of Gigabit speeds. - */ - if ( ( rc = realtek_phy_speed ( rtl ) ) != 0 ) { - /* Ignore failures, since the register may not be - * present on non-Gigabit PHYs (e.g. RTL8101). - */ - } - - /* Restart autonegotiation */ - if ( ( rc = mii_restart ( &rtl->mii ) ) != 0 ) { - DBGC ( rtl, "REALTEK %p could not restart MII: %s\n", - rtl, strerror ( rc ) ); - return rc; - } - - return 0; -} - -/****************************************************************************** - * - * Link state - * - ****************************************************************************** - */ - -/** - * Check link state - * - * @v netdev Network device - */ -static void realtek_check_link ( struct net_device *netdev ) { - struct realtek_nic *rtl = netdev->priv; - uint8_t phystatus; - uint8_t msr; - int link_up; - - /* Determine link state */ - if ( rtl->have_phy_regs ) { - mii_dump ( &rtl->mii ); - phystatus = readb ( rtl->regs + RTL_PHYSTATUS ); - link_up = ( phystatus & RTL_PHYSTATUS_LINKSTS ); - DBGC ( rtl, "REALTEK %p PHY status is %02x (%s%s%s%s%s%s, " - "Link%s, %sDuplex)\n", rtl, phystatus, - ( ( phystatus & RTL_PHYSTATUS_ENTBI ) ? "TBI" : "GMII" ), - ( ( phystatus & RTL_PHYSTATUS_TXFLOW ) ? - ", TxFlow" : "" ), - ( ( phystatus & RTL_PHYSTATUS_RXFLOW ) ? - ", RxFlow" : "" ), - ( ( phystatus & RTL_PHYSTATUS_1000MF ) ? - ", 1000Mbps" : "" ), - ( ( phystatus & RTL_PHYSTATUS_100M ) ? - ", 100Mbps" : "" ), - ( ( phystatus & RTL_PHYSTATUS_10M ) ? - ", 10Mbps" : "" ), - ( ( phystatus & RTL_PHYSTATUS_LINKSTS ) ? - "Up" : "Down" ), - ( ( phystatus & RTL_PHYSTATUS_FULLDUP ) ? - "Full" : "Half" ) ); - } else { - msr = readb ( rtl->regs + RTL_MSR ); - link_up = ( ! ( msr & RTL_MSR_LINKB ) ); - DBGC ( rtl, "REALTEK %p media status is %02x (Link%s, " - "%dMbps%s%s%s%s%s)\n", rtl, msr, - ( ( msr & RTL_MSR_LINKB ) ? "Down" : "Up" ), - ( ( msr & RTL_MSR_SPEED_10 ) ? 10 : 100 ), - ( ( msr & RTL_MSR_TXFCE ) ? ", TxFlow" : "" ), - ( ( msr & RTL_MSR_RXFCE ) ? ", RxFlow" : "" ), - ( ( msr & RTL_MSR_AUX_STATUS ) ? ", AuxPwr" : "" ), - ( ( msr & RTL_MSR_TXPF ) ? ", TxPause" : "" ), - ( ( msr & RTL_MSR_RXPF ) ? ", RxPause" : "" ) ); - } - - /* Report link state */ - if ( link_up ) { - netdev_link_up ( netdev ); - } else { - netdev_link_down ( netdev ); - } -} - -/****************************************************************************** - * - * Network device interface - * - ****************************************************************************** - */ - -/** - * Create receive buffer (legacy mode) - * - * @v rtl Realtek device - * @ret rc Return status code - */ -static int realtek_create_buffer ( struct realtek_nic *rtl ) { - size_t len = ( RTL_RXBUF_LEN + RTL_RXBUF_PAD ); - physaddr_t address; - int rc; - - /* Do nothing unless in legacy mode */ - if ( ! rtl->legacy ) - return 0; - - /* Allocate buffer */ - rtl->rx_buffer = malloc_dma ( len, RTL_RXBUF_ALIGN ); - if ( ! rtl->rx_buffer ) { - rc = -ENOMEM; - goto err_alloc; - } - address = virt_to_bus ( rtl->rx_buffer ); - - /* Check that card can support address */ - if ( address & ~0xffffffffULL ) { - DBGC ( rtl, "REALTEK %p cannot support 64-bit RX buffer " - "address\n", rtl ); - rc = -ENOTSUP; - goto err_64bit; - } - - /* Program buffer address */ - writel ( address, rtl->regs + RTL_RBSTART ); - DBGC ( rtl, "REALTEK %p receive buffer is at [%08llx,%08llx,%08llx)\n", - rtl, ( ( unsigned long long ) address ), - ( ( unsigned long long ) address + RTL_RXBUF_LEN ), - ( ( unsigned long long ) address + len ) ); - - return 0; - - err_64bit: - free_dma ( rtl->rx_buffer, len ); - rtl->rx_buffer = NULL; - err_alloc: - return rc; -} - -/** - * Destroy receive buffer (legacy mode) - * - * @v rtl Realtek device - */ -static void realtek_destroy_buffer ( struct realtek_nic *rtl ) { - size_t len = ( RTL_RXBUF_LEN + RTL_RXBUF_PAD ); - - /* Do nothing unless in legacy mode */ - if ( ! rtl->legacy ) - return; - - /* Clear buffer address */ - writel ( 0, rtl->regs + RTL_RBSTART ); - - /* Free buffer */ - free_dma ( rtl->rx_buffer, len ); - rtl->rx_buffer = NULL; - rtl->rx_offset = 0; -} - -/** - * Create descriptor ring - * - * @v rtl Realtek device - * @v ring Descriptor ring - * @ret rc Return status code - */ -static int realtek_create_ring ( struct realtek_nic *rtl, - struct realtek_ring *ring ) { - physaddr_t address; - - /* Do nothing in legacy mode */ - if ( rtl->legacy ) - return 0; - - /* Allocate descriptor ring */ - ring->desc = malloc_dma ( ring->len, RTL_RING_ALIGN ); - if ( ! ring->desc ) - return -ENOMEM; - - /* Initialise descriptor ring */ - memset ( ring->desc, 0, ring->len ); - - /* Program ring address */ - address = virt_to_bus ( ring->desc ); - writel ( ( ( ( uint64_t ) address ) >> 32 ), - rtl->regs + ring->reg + 4 ); - writel ( ( address & 0xffffffffUL ), rtl->regs + ring->reg ); - DBGC ( rtl, "REALTEK %p ring %02x is at [%08llx,%08llx)\n", - rtl, ring->reg, ( ( unsigned long long ) address ), - ( ( unsigned long long ) address + ring->len ) ); - - return 0; -} - -/** - * Destroy descriptor ring - * - * @v rtl Realtek device - * @v ring Descriptor ring - */ -static void realtek_destroy_ring ( struct realtek_nic *rtl, - struct realtek_ring *ring ) { - - /* Reset producer and consumer counters */ - ring->prod = 0; - ring->cons = 0; - - /* Do nothing more if in legacy mode */ - if ( rtl->legacy ) - return; - - /* Clear ring address */ - writel ( 0, rtl->regs + ring->reg ); - writel ( 0, rtl->regs + ring->reg + 4 ); - - /* Free descriptor ring */ - free_dma ( ring->desc, ring->len ); - ring->desc = NULL; -} - -/** - * Refill receive descriptor ring - * - * @v rtl Realtek device - */ -static void realtek_refill_rx ( struct realtek_nic *rtl ) { - struct realtek_descriptor *rx; - struct io_buffer *iobuf; - unsigned int rx_idx; - physaddr_t address; - int is_last; - - /* Do nothing in legacy mode */ - if ( rtl->legacy ) - return; - - while ( ( rtl->rx.prod - rtl->rx.cons ) < RTL_NUM_RX_DESC ) { - - /* Allocate I/O buffer */ - iobuf = alloc_iob ( RTL_RX_MAX_LEN ); - if ( ! iobuf ) { - /* Wait for next refill */ - return; - } - - /* Get next receive descriptor */ - rx_idx = ( rtl->rx.prod++ % RTL_NUM_RX_DESC ); - is_last = ( rx_idx == ( RTL_NUM_RX_DESC - 1 ) ); - rx = &rtl->rx.desc[rx_idx]; - - /* Populate receive descriptor */ - address = virt_to_bus ( iobuf->data ); - rx->address = cpu_to_le64 ( address ); - rx->length = cpu_to_le16 ( RTL_RX_MAX_LEN ); - wmb(); - rx->flags = ( cpu_to_le16 ( RTL_DESC_OWN ) | - ( is_last ? cpu_to_le16 ( RTL_DESC_EOR ) : 0 ) ); - wmb(); - - /* Record I/O buffer */ - assert ( rtl->rx_iobuf[rx_idx] == NULL ); - rtl->rx_iobuf[rx_idx] = iobuf; - - DBGC2 ( rtl, "REALTEK %p RX %d is [%llx,%llx)\n", rtl, rx_idx, - ( ( unsigned long long ) address ), - ( ( unsigned long long ) address + RTL_RX_MAX_LEN ) ); - } -} - -/** - * Open network device - * - * @v netdev Network device - * @ret rc Return status code - */ -static int realtek_open ( struct net_device *netdev ) { - struct realtek_nic *rtl = netdev->priv; - uint32_t tcr; - uint32_t rcr; - int rc; - - /* Create transmit descriptor ring */ - if ( ( rc = realtek_create_ring ( rtl, &rtl->tx ) ) != 0 ) - goto err_create_tx; - - /* Create receive descriptor ring */ - if ( ( rc = realtek_create_ring ( rtl, &rtl->rx ) ) != 0 ) - goto err_create_rx; - - /* Create receive buffer */ - if ( ( rc = realtek_create_buffer ( rtl ) ) != 0 ) - goto err_create_buffer; - - /* Accept all packets */ - writel ( 0xffffffffUL, rtl->regs + RTL_MAR0 ); - writel ( 0xffffffffUL, rtl->regs + RTL_MAR4 ); - - /* Enable transmitter and receiver. RTL8139 requires that - * this happens before writing to RCR. - */ - writeb ( ( RTL_CR_TE | RTL_CR_RE ), rtl->regs + RTL_CR ); - - /* Configure transmitter */ - tcr = readl ( rtl->regs + RTL_TCR ); - tcr &= ~RTL_TCR_MXDMA_MASK; - tcr |= RTL_TCR_MXDMA_DEFAULT; - writel ( tcr, rtl->regs + RTL_TCR ); - - /* Configure receiver */ - rcr = readl ( rtl->regs + RTL_RCR ); - rcr &= ~( RTL_RCR_STOP_WORKING | RTL_RCR_RXFTH_MASK | - RTL_RCR_RBLEN_MASK | RTL_RCR_MXDMA_MASK ); - rcr |= ( RTL_RCR_RXFTH_DEFAULT | RTL_RCR_RBLEN_DEFAULT | - RTL_RCR_MXDMA_DEFAULT | RTL_RCR_WRAP | RTL_RCR_AB | - RTL_RCR_AM | RTL_RCR_APM | RTL_RCR_AAP ); - writel ( rcr, rtl->regs + RTL_RCR ); - - /* Fill receive ring */ - realtek_refill_rx ( rtl ); - - /* Update link state */ - realtek_check_link ( netdev ); - - return 0; - - realtek_destroy_buffer ( rtl ); - err_create_buffer: - realtek_destroy_ring ( rtl, &rtl->rx ); - err_create_rx: - realtek_destroy_ring ( rtl, &rtl->tx ); - err_create_tx: - return rc; -} - -/** - * Close network device - * - * @v netdev Network device - */ -static void realtek_close ( struct net_device *netdev ) { - struct realtek_nic *rtl = netdev->priv; - unsigned int i; - - /* Disable receiver and transmitter */ - writeb ( 0, rtl->regs + RTL_CR ); - - /* Destroy receive buffer */ - realtek_destroy_buffer ( rtl ); - - /* Destroy receive descriptor ring */ - realtek_destroy_ring ( rtl, &rtl->rx ); - - /* Discard any unused receive buffers */ - for ( i = 0 ; i < RTL_NUM_RX_DESC ; i++ ) { - if ( rtl->rx_iobuf[i] ) - free_iob ( rtl->rx_iobuf[i] ); - rtl->rx_iobuf[i] = NULL; - } - - /* Destroy transmit descriptor ring */ - realtek_destroy_ring ( rtl, &rtl->tx ); -} - -/** - * Transmit packet - * - * @v netdev Network device - * @v iobuf I/O buffer - * @ret rc Return status code - */ -static int realtek_transmit ( struct net_device *netdev, - struct io_buffer *iobuf ) { - struct realtek_nic *rtl = netdev->priv; - struct realtek_descriptor *tx; - unsigned int tx_idx; - physaddr_t address; - int is_last; - - /* Get next transmit descriptor */ - if ( ( rtl->tx.prod - rtl->tx.cons ) >= RTL_NUM_TX_DESC ) { - netdev_tx_defer ( netdev, iobuf ); - return 0; - } - tx_idx = ( rtl->tx.prod++ % RTL_NUM_TX_DESC ); - - /* Transmit packet */ - if ( rtl->legacy ) { - - /* Pad and align packet */ - iob_pad ( iobuf, ETH_ZLEN ); - address = virt_to_bus ( iobuf->data ); - - /* Check that card can support address */ - if ( address & ~0xffffffffULL ) { - DBGC ( rtl, "REALTEK %p cannot support 64-bit TX " - "buffer address\n", rtl ); - return -ENOTSUP; - } - - /* Add to transmit ring */ - writel ( address, rtl->regs + RTL_TSAD ( tx_idx ) ); - writel ( ( RTL_TSD_ERTXTH_DEFAULT | iob_len ( iobuf ) ), - rtl->regs + RTL_TSD ( tx_idx ) ); - - } else { - - /* Populate transmit descriptor */ - address = virt_to_bus ( iobuf->data ); - is_last = ( tx_idx == ( RTL_NUM_TX_DESC - 1 ) ); - tx = &rtl->tx.desc[tx_idx]; - tx->address = cpu_to_le64 ( address ); - tx->length = cpu_to_le16 ( iob_len ( iobuf ) ); - wmb(); - tx->flags = ( cpu_to_le16 ( RTL_DESC_OWN | RTL_DESC_FS | - RTL_DESC_LS ) | - ( is_last ? cpu_to_le16 ( RTL_DESC_EOR ) : 0 ) ); - wmb(); - - /* Notify card that there are packets ready to transmit */ - writeb ( RTL_TPPOLL_NPQ, rtl->regs + rtl->tppoll ); - } - - DBGC2 ( rtl, "REALTEK %p TX %d is [%llx,%llx)\n", rtl, tx_idx, - ( ( unsigned long long ) virt_to_bus ( iobuf->data ) ), - ( ( ( unsigned long long ) virt_to_bus ( iobuf->data ) ) + - iob_len ( iobuf ) ) ); - - return 0; -} - -/** - * Poll for completed packets - * - * @v netdev Network device - */ -static void realtek_poll_tx ( struct net_device *netdev ) { - struct realtek_nic *rtl = netdev->priv; - struct realtek_descriptor *tx; - unsigned int tx_idx; - - /* Check for completed packets */ - while ( rtl->tx.cons != rtl->tx.prod ) { - - /* Get next transmit descriptor */ - tx_idx = ( rtl->tx.cons % RTL_NUM_TX_DESC ); - - /* Stop if descriptor is still in use */ - if ( rtl->legacy ) { - - /* Check ownership bit in transmit status register */ - if ( ! ( readl ( rtl->regs + RTL_TSD ( tx_idx ) ) & - RTL_TSD_OWN ) ) - return; - - } else { - - /* Check ownership bit in descriptor */ - tx = &rtl->tx.desc[tx_idx]; - if ( tx->flags & cpu_to_le16 ( RTL_DESC_OWN ) ) - return; - } - - DBGC2 ( rtl, "REALTEK %p TX %d complete\n", rtl, tx_idx ); - - /* Complete TX descriptor */ - rtl->tx.cons++; - netdev_tx_complete_next ( netdev ); - } -} - -/** - * Poll for received packets (legacy mode) - * - * @v netdev Network device - */ -static void realtek_legacy_poll_rx ( struct net_device *netdev ) { - struct realtek_nic *rtl = netdev->priv; - struct realtek_legacy_header *rx; - struct io_buffer *iobuf; - size_t len; - - /* Check for received packets */ - while ( ! ( readb ( rtl->regs + RTL_CR ) & RTL_CR_BUFE ) ) { - - /* Extract packet from receive buffer */ - rx = ( rtl->rx_buffer + rtl->rx_offset ); - len = le16_to_cpu ( rx->length ); - if ( rx->status & cpu_to_le16 ( RTL_STAT_ROK ) ) { - - DBGC2 ( rtl, "REALTEK %p RX offset %x+%zx\n", - rtl, rtl->rx_offset, len ); - - /* Allocate I/O buffer */ - iobuf = alloc_iob ( len ); - if ( ! iobuf ) { - netdev_rx_err ( netdev, NULL, -ENOMEM ); - /* Leave packet for next poll */ - break; - } - - /* Copy data to I/O buffer */ - memcpy ( iob_put ( iobuf, len ), rx->data, len ); - iob_unput ( iobuf, 4 /* strip CRC */ ); - - /* Hand off to network stack */ - netdev_rx ( netdev, iobuf ); - - } else { - - DBGC ( rtl, "REALTEK %p RX offset %x+%zx error %04x\n", - rtl, rtl->rx_offset, len, - le16_to_cpu ( rx->status ) ); - netdev_rx_err ( netdev, NULL, -EIO ); - } - - /* Update buffer offset */ - rtl->rx_offset = ( rtl->rx_offset + sizeof ( *rx ) + len ); - rtl->rx_offset = ( ( rtl->rx_offset + 3 ) & ~3 ); - rtl->rx_offset = ( rtl->rx_offset % RTL_RXBUF_LEN ); - writew ( ( rtl->rx_offset - 16 ), rtl->regs + RTL_CAPR ); - - /* Give chip time to react before rechecking RTL_CR */ - readw ( rtl->regs + RTL_CAPR ); - } -} - -/** - * Poll for received packets - * - * @v netdev Network device - */ -static void realtek_poll_rx ( struct net_device *netdev ) { - struct realtek_nic *rtl = netdev->priv; - struct realtek_descriptor *rx; - struct io_buffer *iobuf; - unsigned int rx_idx; - size_t len; - - /* Poll receive buffer if in legacy mode */ - if ( rtl->legacy ) { - realtek_legacy_poll_rx ( netdev ); - return; - } - - /* Check for received packets */ - while ( rtl->rx.cons != rtl->rx.prod ) { - - /* Get next receive descriptor */ - rx_idx = ( rtl->rx.cons % RTL_NUM_RX_DESC ); - rx = &rtl->rx.desc[rx_idx]; - - /* Stop if descriptor is still in use */ - if ( rx->flags & cpu_to_le16 ( RTL_DESC_OWN ) ) - return; - - /* Populate I/O buffer */ - iobuf = rtl->rx_iobuf[rx_idx]; - rtl->rx_iobuf[rx_idx] = NULL; - len = ( le16_to_cpu ( rx->length ) & RTL_DESC_SIZE_MASK ); - iob_put ( iobuf, ( len - 4 /* strip CRC */ ) ); - - /* Hand off to network stack */ - if ( rx->flags & cpu_to_le16 ( RTL_DESC_RES ) ) { - DBGC ( rtl, "REALTEK %p RX %d error (length %zd, " - "flags %04x)\n", rtl, rx_idx, len, - le16_to_cpu ( rx->flags ) ); - netdev_rx_err ( netdev, iobuf, -EIO ); - } else { - DBGC2 ( rtl, "REALTEK %p RX %d complete (length " - "%zd)\n", rtl, rx_idx, len ); - netdev_rx ( netdev, iobuf ); - } - rtl->rx.cons++; - } -} - -/** - * Poll for completed and received packets - * - * @v netdev Network device - */ -static void realtek_poll ( struct net_device *netdev ) { - struct realtek_nic *rtl = netdev->priv; - uint16_t isr; - - /* Check for and acknowledge interrupts */ - isr = readw ( rtl->regs + RTL_ISR ); - if ( ! isr ) - return; - writew ( isr, rtl->regs + RTL_ISR ); - - /* Poll for TX completions, if applicable */ - if ( isr & ( RTL_IRQ_TER | RTL_IRQ_TOK ) ) - realtek_poll_tx ( netdev ); - - /* Poll for RX completionsm, if applicable */ - if ( isr & ( RTL_IRQ_RER | RTL_IRQ_ROK ) ) - realtek_poll_rx ( netdev ); - - /* Check link state, if applicable */ - if ( isr & RTL_IRQ_PUN_LINKCHG ) - realtek_check_link ( netdev ); - - /* Refill RX ring */ - realtek_refill_rx ( rtl ); -} - -/** - * Enable or disable interrupts - * - * @v netdev Network device - * @v enable Interrupts should be enabled - */ -static void realtek_irq ( struct net_device *netdev, int enable ) { - struct realtek_nic *rtl = netdev->priv; - uint16_t imr; - - /* Set interrupt mask */ - imr = ( enable ? ( RTL_IRQ_PUN_LINKCHG | RTL_IRQ_TER | RTL_IRQ_TOK | - RTL_IRQ_RER | RTL_IRQ_ROK ) : 0 ); - writew ( imr, rtl->regs + RTL_IMR ); -} - -/** Realtek network device operations */ -static struct net_device_operations realtek_operations = { - .open = realtek_open, - .close = realtek_close, - .transmit = realtek_transmit, - .poll = realtek_poll, - .irq = realtek_irq, -}; - -/****************************************************************************** - * - * PCI interface - * - ****************************************************************************** - */ - -/** - * Detect device type - * - * @v rtl Realtek device - */ -static void realtek_detect ( struct realtek_nic *rtl ) { - uint16_t rms; - uint16_t check_rms; - uint16_t cpcr; - uint16_t check_cpcr; - - /* The RX Packet Maximum Size register is present only on - * 8169. Try to set to our intended MTU. - */ - rms = RTL_RX_MAX_LEN; - writew ( rms, rtl->regs + RTL_RMS ); - check_rms = readw ( rtl->regs + RTL_RMS ); - - /* The C+ Command register is present only on 8169 and 8139C+. - * Try to enable C+ mode and PCI Dual Address Cycle (for - * 64-bit systems), if supported. - * - * Note that enabling DAC seems to cause bizarre behaviour - * (lockups, garbage data on the wire) on some systems, even - * if only 32-bit addresses are used. - */ - cpcr = readw ( rtl->regs + RTL_CPCR ); - cpcr |= ( RTL_CPCR_MULRW | RTL_CPCR_CPRX | RTL_CPCR_CPTX ); - if ( sizeof ( physaddr_t ) > sizeof ( uint32_t ) ) - cpcr |= RTL_CPCR_DAC; - writew ( cpcr, rtl->regs + RTL_CPCR ); - check_cpcr = readw ( rtl->regs + RTL_CPCR ); - - /* Detect device type */ - if ( check_rms == rms ) { - DBGC ( rtl, "REALTEK %p appears to be an RTL8169\n", rtl ); - rtl->have_phy_regs = 1; - rtl->tppoll = RTL_TPPOLL_8169; - } else { - if ( ( check_cpcr == cpcr ) && ( cpcr != 0xffff ) ) { - DBGC ( rtl, "REALTEK %p appears to be an RTL8139C+\n", - rtl ); - rtl->tppoll = RTL_TPPOLL_8139CP; - } else { - DBGC ( rtl, "REALTEK %p appears to be an RTL8139\n", - rtl ); - rtl->legacy = 1; - } - rtl->eeprom.bus = &rtl->spibit.bus; - } -} - -/** - * Probe PCI device - * - * @v pci PCI device - * @ret rc Return status code - */ -static int realtek_probe ( struct pci_device *pci ) { - struct net_device *netdev; - struct realtek_nic *rtl; - unsigned int i; - int rc; - - /* Allocate and initialise net device */ - netdev = alloc_etherdev ( sizeof ( *rtl ) ); - if ( ! netdev ) { - rc = -ENOMEM; - goto err_alloc; - } - netdev_init ( netdev, &realtek_operations ); - rtl = netdev->priv; - pci_set_drvdata ( pci, netdev ); - netdev->dev = &pci->dev; - memset ( rtl, 0, sizeof ( *rtl ) ); - realtek_init_ring ( &rtl->tx, RTL_NUM_TX_DESC, RTL_TNPDS ); - realtek_init_ring ( &rtl->rx, RTL_NUM_RX_DESC, RTL_RDSAR ); - - /* Fix up PCI device */ - adjust_pci_device ( pci ); - - /* Map registers */ - rtl->regs = ioremap ( pci->membase, RTL_BAR_SIZE ); - if ( ! rtl->regs ) { - rc = -ENODEV; - goto err_ioremap; - } - - /* Reset the NIC */ - if ( ( rc = realtek_reset ( rtl ) ) != 0 ) - goto err_reset; - - /* Detect device type */ - realtek_detect ( rtl ); - - /* Initialise EEPROM */ - if ( rtl->eeprom.bus && - ( ( rc = realtek_init_eeprom ( netdev ) ) == 0 ) ) { - - /* Read MAC address from EEPROM */ - if ( ( rc = nvs_read ( &rtl->eeprom.nvs, RTL_EEPROM_MAC, - netdev->hw_addr, ETH_ALEN ) ) != 0 ) { - DBGC ( rtl, "REALTEK %p could not read MAC address: " - "%s\n", rtl, strerror ( rc ) ); - goto err_nvs_read; - } - - } else { - - /* EEPROM not present. Fall back to reading the - * current ID register value, which will hopefully - * have been programmed by the platform firmware. - */ - for ( i = 0 ; i < ETH_ALEN ; i++ ) - netdev->hw_addr[i] = readb ( rtl->regs + RTL_IDR0 + i ); - } - - /* Initialise and reset MII interface */ - mii_init ( &rtl->mii, &realtek_mii_operations ); - if ( ( rc = realtek_phy_reset ( rtl ) ) != 0 ) - goto err_phy_reset; - - /* Register network device */ - if ( ( rc = register_netdev ( netdev ) ) != 0 ) - goto err_register_netdev; - - /* Set initial link state */ - realtek_check_link ( netdev ); - - /* Register non-volatile options, if applicable */ - if ( rtl->nvo.nvs ) { - if ( ( rc = register_nvo ( &rtl->nvo, - netdev_settings ( netdev ) ) ) != 0) - goto err_register_nvo; - } - - return 0; - - err_register_nvo: - unregister_netdev ( netdev ); - err_register_netdev: - err_phy_reset: - err_nvs_read: - realtek_reset ( rtl ); - err_reset: - iounmap ( rtl->regs ); - err_ioremap: - netdev_nullify ( netdev ); - netdev_put ( netdev ); - err_alloc: - return rc; -} - -/** - * Remove PCI device - * - * @v pci PCI device - */ -static void realtek_remove ( struct pci_device *pci ) { - struct net_device *netdev = pci_get_drvdata ( pci ); - struct realtek_nic *rtl = netdev->priv; - - /* Unregister non-volatile options, if applicable */ - if ( rtl->nvo.nvs ) - unregister_nvo ( &rtl->nvo ); - - /* Unregister network device */ - unregister_netdev ( netdev ); - - /* Reset card */ - realtek_reset ( rtl ); - - /* Free network device */ - iounmap ( rtl->regs ); - netdev_nullify ( netdev ); - netdev_put ( netdev ); -} - -/** Realtek PCI device IDs */ -static struct pci_device_id realtek_nics[] = { - PCI_ROM ( 0x0001, 0x8168, "clone8169", "Cloned 8169", 0 ), - PCI_ROM ( 0x018a, 0x0106, "fpc0106tx", "LevelOne FPC-0106TX", 0 ), - PCI_ROM ( 0x021b, 0x8139, "hne300", "Compaq HNE-300", 0 ), - PCI_ROM ( 0x02ac, 0x1012, "s1012", "SpeedStream 1012", 0 ), - PCI_ROM ( 0x0357, 0x000a, "ttpmon", "TTTech TTP-Monitoring", 0 ), - PCI_ROM ( 0x10ec, 0x8129, "rtl8129", "RTL-8129", 0 ), - PCI_ROM ( 0x10ec, 0x8136, "rtl8136", "RTL8101E/RTL8102E", 0 ), - PCI_ROM ( 0x10ec, 0x8138, "rtl8138", "RT8139 (B/C)", 0 ), - PCI_ROM ( 0x10ec, 0x8139, "rtl8139", "RTL-8139/8139C/8139C+", 0 ), - PCI_ROM ( 0x10ec, 0x8167, "rtl8167", "RTL-8110SC/8169SC", 0 ), - PCI_ROM ( 0x10ec, 0x8168, "rtl8168", "RTL8111/8168B", 0 ), - PCI_ROM ( 0x10ec, 0x8169, "rtl8169", "RTL-8169", 0 ), - PCI_ROM ( 0x1113, 0x1211, "smc1211", "SMC2-1211TX", 0 ), - PCI_ROM ( 0x1186, 0x1300, "dfe538", "DFE530TX+/DFE538TX", 0 ), - PCI_ROM ( 0x1186, 0x1340, "dfe690", "DFE-690TXD", 0 ), - PCI_ROM ( 0x1186, 0x4300, "dge528t", "DGE-528T", 0 ), - PCI_ROM ( 0x11db, 0x1234, "sega8139", "Sega Enterprises 8139", 0 ), - PCI_ROM ( 0x1259, 0xa117, "allied8139", "Allied Telesyn 8139", 0 ), - PCI_ROM ( 0x1259, 0xa11e, "allied81xx", "Allied Telesyn 81xx", 0 ), - PCI_ROM ( 0x1259, 0xc107, "allied8169", "Allied Telesyn 8169", 0 ), - PCI_ROM ( 0x126c, 0x1211, "northen8139","Northern Telecom 8139", 0 ), - PCI_ROM ( 0x13d1, 0xab06, "fe2000vx", "Abocom FE2000VX", 0 ), - PCI_ROM ( 0x1432, 0x9130, "edi8139", "Edimax 8139", 0 ), - PCI_ROM ( 0x14ea, 0xab06, "fnw3603tx", "Planex FNW-3603-TX", 0 ), - PCI_ROM ( 0x14ea, 0xab07, "fnw3800tx", "Planex FNW-3800-TX", 0 ), - PCI_ROM ( 0x1500, 0x1360, "delta8139", "Delta Electronics 8139", 0 ), - PCI_ROM ( 0x16ec, 0x0116, "usr997902", "USR997902", 0 ), - PCI_ROM ( 0x1737, 0x1032, "linksys8169","Linksys 8169", 0 ), - PCI_ROM ( 0x1743, 0x8139, "rolf100", "Peppercorn ROL/F-100", 0 ), - PCI_ROM ( 0x4033, 0x1360, "addron8139", "Addtron 8139", 0 ), - PCI_ROM ( 0xffff, 0x8139, "clonse8139", "Cloned 8139", 0 ), -}; - -/** Realtek PCI driver */ -struct pci_driver realtek_driver __pci_driver = { - .ids = realtek_nics, - .id_count = ( sizeof ( realtek_nics ) / sizeof ( realtek_nics[0] ) ), - .probe = realtek_probe, - .remove = realtek_remove, -}; |