diff options
Diffstat (limited to 'kernel/drivers/isdn/hisax/jade.c')
| -rw-r--r-- | kernel/drivers/isdn/hisax/jade.c | 305 |
1 files changed, 305 insertions, 0 deletions
diff --git a/kernel/drivers/isdn/hisax/jade.c b/kernel/drivers/isdn/hisax/jade.c new file mode 100644 index 000000000..e2ae7871a --- /dev/null +++ b/kernel/drivers/isdn/hisax/jade.c @@ -0,0 +1,305 @@ +/* $Id: jade.c,v 1.9.2.4 2004/01/14 16:04:48 keil Exp $ + * + * JADE stuff (derived from original hscx.c) + * + * Author Roland Klabunde + * Copyright by Roland Klabunde <R.Klabunde@Berkom.de> + * + * This software may be used and distributed according to the terms + * of the GNU General Public License, incorporated herein by reference. + * + */ + + +#include <linux/init.h> +#include "hisax.h" +#include "hscx.h" +#include "jade.h" +#include "isdnl1.h" +#include <linux/interrupt.h> +#include <linux/slab.h> + + +int +JadeVersion(struct IsdnCardState *cs, char *s) +{ + int ver; + int to = 50; + cs->BC_Write_Reg(cs, -1, 0x50, 0x19); + while (to) { + udelay(1); + ver = cs->BC_Read_Reg(cs, -1, 0x60); + to--; + if (ver) + break; + if (!to) { + printk(KERN_INFO "%s JADE version not obtainable\n", s); + return (0); + } + } + /* Wait for the JADE */ + udelay(10); + /* Read version */ + ver = cs->BC_Read_Reg(cs, -1, 0x60); + printk(KERN_INFO "%s JADE version: %d\n", s, ver); + return (1); +} + +/* Write to indirect accessible jade register set */ +static void +jade_write_indirect(struct IsdnCardState *cs, u_char reg, u_char value) +{ + int to = 50; + u_char ret; + + /* Write the data */ + cs->BC_Write_Reg(cs, -1, COMM_JADE + 1, value); + /* Say JADE we wanna write indirect reg 'reg' */ + cs->BC_Write_Reg(cs, -1, COMM_JADE, reg); + to = 50; + /* Wait for RDY goes high */ + while (to) { + udelay(1); + ret = cs->BC_Read_Reg(cs, -1, COMM_JADE); + to--; + if (ret & 1) + /* Got acknowledge */ + break; + if (!to) { + printk(KERN_INFO "Can not see ready bit from JADE DSP (reg=0x%X, value=0x%X)\n", reg, value); + return; + } + } +} + + + +static void +modejade(struct BCState *bcs, int mode, int bc) +{ + struct IsdnCardState *cs = bcs->cs; + int jade = bcs->hw.hscx.hscx; + + if (cs->debug & L1_DEB_HSCX) { + debugl1(cs, "jade %c mode %d ichan %d", 'A' + jade, mode, bc); + } + bcs->mode = mode; + bcs->channel = bc; + + cs->BC_Write_Reg(cs, jade, jade_HDLC_MODE, (mode == L1_MODE_TRANS ? jadeMODE_TMO : 0x00)); + cs->BC_Write_Reg(cs, jade, jade_HDLC_CCR0, (jadeCCR0_PU | jadeCCR0_ITF)); + cs->BC_Write_Reg(cs, jade, jade_HDLC_CCR1, 0x00); + + jade_write_indirect(cs, jade_HDLC1SERRXPATH, 0x08); + jade_write_indirect(cs, jade_HDLC2SERRXPATH, 0x08); + jade_write_indirect(cs, jade_HDLC1SERTXPATH, 0x00); + jade_write_indirect(cs, jade_HDLC2SERTXPATH, 0x00); + + cs->BC_Write_Reg(cs, jade, jade_HDLC_XCCR, 0x07); + cs->BC_Write_Reg(cs, jade, jade_HDLC_RCCR, 0x07); + + if (bc == 0) { + cs->BC_Write_Reg(cs, jade, jade_HDLC_TSAX, 0x00); + cs->BC_Write_Reg(cs, jade, jade_HDLC_TSAR, 0x00); + } else { + cs->BC_Write_Reg(cs, jade, jade_HDLC_TSAX, 0x04); + cs->BC_Write_Reg(cs, jade, jade_HDLC_TSAR, 0x04); + } + switch (mode) { + case (L1_MODE_NULL): + cs->BC_Write_Reg(cs, jade, jade_HDLC_MODE, jadeMODE_TMO); + break; + case (L1_MODE_TRANS): + cs->BC_Write_Reg(cs, jade, jade_HDLC_MODE, (jadeMODE_TMO | jadeMODE_RAC | jadeMODE_XAC)); + break; + case (L1_MODE_HDLC): + cs->BC_Write_Reg(cs, jade, jade_HDLC_MODE, (jadeMODE_RAC | jadeMODE_XAC)); + break; + } + if (mode) { + cs->BC_Write_Reg(cs, jade, jade_HDLC_RCMD, (jadeRCMD_RRES | jadeRCMD_RMC)); + cs->BC_Write_Reg(cs, jade, jade_HDLC_XCMD, jadeXCMD_XRES); + /* Unmask ints */ + cs->BC_Write_Reg(cs, jade, jade_HDLC_IMR, 0xF8); + } + else + /* Mask ints */ + cs->BC_Write_Reg(cs, jade, jade_HDLC_IMR, 0x00); +} + +static void +jade_l2l1(struct PStack *st, int pr, void *arg) +{ + struct BCState *bcs = st->l1.bcs; + struct sk_buff *skb = arg; + u_long flags; + + switch (pr) { + case (PH_DATA | REQUEST): + spin_lock_irqsave(&bcs->cs->lock, flags); + if (bcs->tx_skb) { + skb_queue_tail(&bcs->squeue, skb); + } else { + bcs->tx_skb = skb; + test_and_set_bit(BC_FLG_BUSY, &bcs->Flag); + bcs->hw.hscx.count = 0; + bcs->cs->BC_Send_Data(bcs); + } + spin_unlock_irqrestore(&bcs->cs->lock, flags); + break; + case (PH_PULL | INDICATION): + spin_lock_irqsave(&bcs->cs->lock, flags); + if (bcs->tx_skb) { + printk(KERN_WARNING "jade_l2l1: this shouldn't happen\n"); + } else { + test_and_set_bit(BC_FLG_BUSY, &bcs->Flag); + bcs->tx_skb = skb; + bcs->hw.hscx.count = 0; + bcs->cs->BC_Send_Data(bcs); + } + spin_unlock_irqrestore(&bcs->cs->lock, flags); + break; + case (PH_PULL | REQUEST): + if (!bcs->tx_skb) { + test_and_clear_bit(FLG_L1_PULL_REQ, &st->l1.Flags); + st->l1.l1l2(st, PH_PULL | CONFIRM, NULL); + } else + test_and_set_bit(FLG_L1_PULL_REQ, &st->l1.Flags); + break; + case (PH_ACTIVATE | REQUEST): + spin_lock_irqsave(&bcs->cs->lock, flags); + test_and_set_bit(BC_FLG_ACTIV, &bcs->Flag); + modejade(bcs, st->l1.mode, st->l1.bc); + spin_unlock_irqrestore(&bcs->cs->lock, flags); + l1_msg_b(st, pr, arg); + break; + case (PH_DEACTIVATE | REQUEST): + l1_msg_b(st, pr, arg); + break; + case (PH_DEACTIVATE | CONFIRM): + spin_lock_irqsave(&bcs->cs->lock, flags); + test_and_clear_bit(BC_FLG_ACTIV, &bcs->Flag); + test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag); + modejade(bcs, 0, st->l1.bc); + spin_unlock_irqrestore(&bcs->cs->lock, flags); + st->l1.l1l2(st, PH_DEACTIVATE | CONFIRM, NULL); + break; + } +} + +static void +close_jadestate(struct BCState *bcs) +{ + modejade(bcs, 0, bcs->channel); + if (test_and_clear_bit(BC_FLG_INIT, &bcs->Flag)) { + kfree(bcs->hw.hscx.rcvbuf); + bcs->hw.hscx.rcvbuf = NULL; + kfree(bcs->blog); + bcs->blog = NULL; + skb_queue_purge(&bcs->rqueue); + skb_queue_purge(&bcs->squeue); + if (bcs->tx_skb) { + dev_kfree_skb_any(bcs->tx_skb); + bcs->tx_skb = NULL; + test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag); + } + } +} + +static int +open_jadestate(struct IsdnCardState *cs, struct BCState *bcs) +{ + if (!test_and_set_bit(BC_FLG_INIT, &bcs->Flag)) { + if (!(bcs->hw.hscx.rcvbuf = kmalloc(HSCX_BUFMAX, GFP_ATOMIC))) { + printk(KERN_WARNING + "HiSax: No memory for hscx.rcvbuf\n"); + test_and_clear_bit(BC_FLG_INIT, &bcs->Flag); + return (1); + } + if (!(bcs->blog = kmalloc(MAX_BLOG_SPACE, GFP_ATOMIC))) { + printk(KERN_WARNING + "HiSax: No memory for bcs->blog\n"); + test_and_clear_bit(BC_FLG_INIT, &bcs->Flag); + kfree(bcs->hw.hscx.rcvbuf); + bcs->hw.hscx.rcvbuf = NULL; + return (2); + } + skb_queue_head_init(&bcs->rqueue); + skb_queue_head_init(&bcs->squeue); + } + bcs->tx_skb = NULL; + test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag); + bcs->event = 0; + bcs->hw.hscx.rcvidx = 0; + bcs->tx_cnt = 0; + return (0); +} + + +static int +setstack_jade(struct PStack *st, struct BCState *bcs) +{ + bcs->channel = st->l1.bc; + if (open_jadestate(st->l1.hardware, bcs)) + return (-1); + st->l1.bcs = bcs; + st->l2.l2l1 = jade_l2l1; + setstack_manager(st); + bcs->st = st; + setstack_l1_B(st); + return (0); +} + +void +clear_pending_jade_ints(struct IsdnCardState *cs) +{ + int val; + + cs->BC_Write_Reg(cs, 0, jade_HDLC_IMR, 0x00); + cs->BC_Write_Reg(cs, 1, jade_HDLC_IMR, 0x00); + + val = cs->BC_Read_Reg(cs, 1, jade_HDLC_ISR); + debugl1(cs, "jade B ISTA %x", val); + val = cs->BC_Read_Reg(cs, 0, jade_HDLC_ISR); + debugl1(cs, "jade A ISTA %x", val); + val = cs->BC_Read_Reg(cs, 1, jade_HDLC_STAR); + debugl1(cs, "jade B STAR %x", val); + val = cs->BC_Read_Reg(cs, 0, jade_HDLC_STAR); + debugl1(cs, "jade A STAR %x", val); + /* Unmask ints */ + cs->BC_Write_Reg(cs, 0, jade_HDLC_IMR, 0xF8); + cs->BC_Write_Reg(cs, 1, jade_HDLC_IMR, 0xF8); +} + +void +initjade(struct IsdnCardState *cs) +{ + cs->bcs[0].BC_SetStack = setstack_jade; + cs->bcs[1].BC_SetStack = setstack_jade; + cs->bcs[0].BC_Close = close_jadestate; + cs->bcs[1].BC_Close = close_jadestate; + cs->bcs[0].hw.hscx.hscx = 0; + cs->bcs[1].hw.hscx.hscx = 1; + + /* Stop DSP audio tx/rx */ + jade_write_indirect(cs, 0x11, 0x0f); + jade_write_indirect(cs, 0x17, 0x2f); + + /* Transparent Mode, RxTx inactive, No Test, No RFS/TFS */ + cs->BC_Write_Reg(cs, 0, jade_HDLC_MODE, jadeMODE_TMO); + cs->BC_Write_Reg(cs, 1, jade_HDLC_MODE, jadeMODE_TMO); + /* Power down, 1-Idle, RxTx least significant bit first */ + cs->BC_Write_Reg(cs, 0, jade_HDLC_CCR0, 0x00); + cs->BC_Write_Reg(cs, 1, jade_HDLC_CCR0, 0x00); + /* Mask all interrupts */ + cs->BC_Write_Reg(cs, 0, jade_HDLC_IMR, 0x00); + cs->BC_Write_Reg(cs, 1, jade_HDLC_IMR, 0x00); + /* Setup host access to hdlc controller */ + jade_write_indirect(cs, jade_HDLCCNTRACCESS, (jadeINDIRECT_HAH1 | jadeINDIRECT_HAH2)); + /* Unmask HDLC int (don't forget DSP int later on)*/ + cs->BC_Write_Reg(cs, -1, jade_INT, (jadeINT_HDLC1 | jadeINT_HDLC2)); + + /* once again TRANSPARENT */ + modejade(cs->bcs, 0, 0); + modejade(cs->bcs + 1, 0, 0); +} |