/* $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> int JadeVersion(struct IsdnCardState *cs, char *s) { int ver,i; int to = 50; cs->BC_Write_Reg(cs, -1, 0x50, 0x19); i=0; 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) { char tmp[40]; sprintf(tmp, "jade %c mode %d ichan %d", 'A' + jade, mode, bc); debugl1(cs, tmp); } 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; char tmp[64]; 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); sprintf(tmp, "jade B ISTA %x", val); debugl1(cs, tmp); val = cs->BC_Read_Reg(cs, 0, jade_HDLC_ISR); sprintf(tmp, "jade A ISTA %x", val); debugl1(cs, tmp); val = cs->BC_Read_Reg(cs, 1, jade_HDLC_STAR); sprintf(tmp, "jade B STAR %x", val); debugl1(cs, tmp); val = cs->BC_Read_Reg(cs, 0, jade_HDLC_STAR); sprintf(tmp, "jade A STAR %x", val); debugl1(cs, tmp); /* 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); }