diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/isdn/hisax/hfc_sx.c | 1517 |
1 files changed, 1517 insertions, 0 deletions
diff --git a/drivers/isdn/hisax/hfc_sx.c b/drivers/isdn/hisax/hfc_sx.c new file mode 100644 index 000000000..4d3b4b2f2 --- /dev/null +++ b/drivers/isdn/hisax/hfc_sx.c @@ -0,0 +1,1517 @@ +/* $Id: hfc_sx.c,v 1.12.2.5 2004/02/11 13:21:33 keil Exp $ + * + * level driver for Cologne Chip Designs hfc-s+/sp based cards + * + * Author Werner Cornelius + * based on existing driver for CCD HFC PCI cards + * Copyright by Werner Cornelius <werner@isdn4linux.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 "hfc_sx.h" +#include "isdnl1.h" +#include <linux/interrupt.h> +#include <linux/isapnp.h> +#include <linux/slab.h> + +static const char *hfcsx_revision = "$Revision: 1.12.2.5 $"; + +/***************************************/ +/* IRQ-table for CCDs demo board */ +/* IRQs 6,5,10,11,12,15 are supported */ +/***************************************/ + +/* Teles 16.3c Vendor Id TAG2620, Version 1.0, Vendor version 2.1 + * + * Thanks to Uwe Wisniewski + * + * ISA-SLOT Signal PIN + * B25 IRQ3 92 IRQ_G + * B23 IRQ5 94 IRQ_A + * B4 IRQ2/9 95 IRQ_B + * D3 IRQ10 96 IRQ_C + * D4 IRQ11 97 IRQ_D + * D5 IRQ12 98 IRQ_E + * D6 IRQ15 99 IRQ_F + */ + +#undef CCD_DEMO_BOARD +#ifdef CCD_DEMO_BOARD +static u_char ccd_sp_irqtab[16] = { + 0, 0, 0, 0, 0, 2, 1, 0, 0, 0, 3, 4, 5, 0, 0, 6 +}; +#else /* Teles 16.3c */ +static u_char ccd_sp_irqtab[16] = { + 0, 0, 0, 7, 0, 1, 0, 0, 0, 2, 3, 4, 5, 0, 0, 6 +}; +#endif +#define NT_T1_COUNT 20 /* number of 3.125ms interrupts for G2 timeout */ + +#define byteout(addr, val) outb(val, addr) +#define bytein(addr) inb(addr) + +/******************************/ +/* In/Out access to registers */ +/******************************/ +static inline void +Write_hfc(struct IsdnCardState *cs, u_char regnum, u_char val) +{ + byteout(cs->hw.hfcsx.base + 1, regnum); + byteout(cs->hw.hfcsx.base, val); +} + +static inline u_char +Read_hfc(struct IsdnCardState *cs, u_char regnum) +{ + u_char ret; + + byteout(cs->hw.hfcsx.base + 1, regnum); + ret = bytein(cs->hw.hfcsx.base); + return (ret); +} + + +/**************************************************/ +/* select a fifo and remember which one for reuse */ +/**************************************************/ +static void +fifo_select(struct IsdnCardState *cs, u_char fifo) +{ + if (fifo == cs->hw.hfcsx.last_fifo) + return; /* still valid */ + + byteout(cs->hw.hfcsx.base + 1, HFCSX_FIF_SEL); + byteout(cs->hw.hfcsx.base, fifo); + while (bytein(cs->hw.hfcsx.base + 1) & 1); /* wait for busy */ + udelay(4); + byteout(cs->hw.hfcsx.base, fifo); + while (bytein(cs->hw.hfcsx.base + 1) & 1); /* wait for busy */ +} + +/******************************************/ +/* reset the specified fifo to defaults. */ +/* If its a send fifo init needed markers */ +/******************************************/ +static void +reset_fifo(struct IsdnCardState *cs, u_char fifo) +{ + fifo_select(cs, fifo); /* first select the fifo */ + byteout(cs->hw.hfcsx.base + 1, HFCSX_CIRM); + byteout(cs->hw.hfcsx.base, cs->hw.hfcsx.cirm | 0x80); /* reset cmd */ + udelay(1); + while (bytein(cs->hw.hfcsx.base + 1) & 1); /* wait for busy */ +} + + +/*************************************************************/ +/* write_fifo writes the skb contents to the desired fifo */ +/* if no space is available or an error occurs 0 is returned */ +/* the skb is not released in any way. */ +/*************************************************************/ +static int +write_fifo(struct IsdnCardState *cs, struct sk_buff *skb, u_char fifo, int trans_max) +{ + unsigned short *msp; + int fifo_size, count, z1, z2; + u_char f_msk, f1, f2, *src; + + if (skb->len <= 0) return (0); + if (fifo & 1) return (0); /* no write fifo */ + + fifo_select(cs, fifo); + if (fifo & 4) { + fifo_size = D_FIFO_SIZE; /* D-channel */ + f_msk = MAX_D_FRAMES; + if (trans_max) return (0); /* only HDLC */ + } + else { + fifo_size = cs->hw.hfcsx.b_fifo_size; /* B-channel */ + f_msk = MAX_B_FRAMES; + } + + z1 = Read_hfc(cs, HFCSX_FIF_Z1H); + z1 = ((z1 << 8) | Read_hfc(cs, HFCSX_FIF_Z1L)); + + /* Check for transparent mode */ + if (trans_max) { + z2 = Read_hfc(cs, HFCSX_FIF_Z2H); + z2 = ((z2 << 8) | Read_hfc(cs, HFCSX_FIF_Z2L)); + count = z2 - z1; + if (count <= 0) + count += fifo_size; /* free bytes */ + if (count < skb->len + 1) return (0); /* no room */ + count = fifo_size - count; /* bytes still not send */ + if (count > 2 * trans_max) return (0); /* delay to long */ + count = skb->len; + src = skb->data; + while (count--) + Write_hfc(cs, HFCSX_FIF_DWR, *src++); + return (1); /* success */ + } + + msp = ((struct hfcsx_extra *)(cs->hw.hfcsx.extra))->marker; + msp += (((fifo >> 1) & 3) * (MAX_B_FRAMES + 1)); + f1 = Read_hfc(cs, HFCSX_FIF_F1) & f_msk; + f2 = Read_hfc(cs, HFCSX_FIF_F2) & f_msk; + + count = f1 - f2; /* frame count actually buffered */ + if (count < 0) + count += (f_msk + 1); /* if wrap around */ + if (count > f_msk - 1) { + if (cs->debug & L1_DEB_ISAC_FIFO) + debugl1(cs, "hfcsx_write_fifo %d more as %d frames", fifo, f_msk - 1); + return (0); + } + + *(msp + f1) = z1; /* remember marker */ + + if (cs->debug & L1_DEB_ISAC_FIFO) + debugl1(cs, "hfcsx_write_fifo %d f1(%x) f2(%x) z1(f1)(%x)", + fifo, f1, f2, z1); + /* now determine free bytes in FIFO buffer */ + count = *(msp + f2) - z1; + if (count <= 0) + count += fifo_size; /* count now contains available bytes */ + + if (cs->debug & L1_DEB_ISAC_FIFO) + debugl1(cs, "hfcsx_write_fifo %d count(%u/%d)", + fifo, skb->len, count); + if (count < skb->len) { + if (cs->debug & L1_DEB_ISAC_FIFO) + debugl1(cs, "hfcsx_write_fifo %d no fifo mem", fifo); + return (0); + } + + count = skb->len; /* get frame len */ + src = skb->data; /* source pointer */ + while (count--) + Write_hfc(cs, HFCSX_FIF_DWR, *src++); + + Read_hfc(cs, HFCSX_FIF_INCF1); /* increment F1 */ + udelay(1); + while (bytein(cs->hw.hfcsx.base + 1) & 1); /* wait for busy */ + return (1); +} + +/***************************************************************/ +/* read_fifo reads data to an skb from the desired fifo */ +/* if no data is available or an error occurs NULL is returned */ +/* the skb is not released in any way. */ +/***************************************************************/ +static struct sk_buff * +read_fifo(struct IsdnCardState *cs, u_char fifo, int trans_max) +{ int fifo_size, count, z1, z2; + u_char f_msk, f1, f2, *dst; + struct sk_buff *skb; + + if (!(fifo & 1)) return (NULL); /* no read fifo */ + fifo_select(cs, fifo); + if (fifo & 4) { + fifo_size = D_FIFO_SIZE; /* D-channel */ + f_msk = MAX_D_FRAMES; + if (trans_max) return (NULL); /* only hdlc */ + } + else { + fifo_size = cs->hw.hfcsx.b_fifo_size; /* B-channel */ + f_msk = MAX_B_FRAMES; + } + + /* transparent mode */ + if (trans_max) { + z1 = Read_hfc(cs, HFCSX_FIF_Z1H); + z1 = ((z1 << 8) | Read_hfc(cs, HFCSX_FIF_Z1L)); + z2 = Read_hfc(cs, HFCSX_FIF_Z2H); + z2 = ((z2 << 8) | Read_hfc(cs, HFCSX_FIF_Z2L)); + /* now determine bytes in actual FIFO buffer */ + count = z1 - z2; + if (count <= 0) + count += fifo_size; /* count now contains buffered bytes */ + count++; + if (count > trans_max) + count = trans_max; /* limit length */ + skb = dev_alloc_skb(count); + if (skb) { + dst = skb_put(skb, count); + while (count--) + *dst++ = Read_hfc(cs, HFCSX_FIF_DRD); + return skb; + } else + return NULL; /* no memory */ + } + + do { + f1 = Read_hfc(cs, HFCSX_FIF_F1) & f_msk; + f2 = Read_hfc(cs, HFCSX_FIF_F2) & f_msk; + + if (f1 == f2) return (NULL); /* no frame available */ + + z1 = Read_hfc(cs, HFCSX_FIF_Z1H); + z1 = ((z1 << 8) | Read_hfc(cs, HFCSX_FIF_Z1L)); + z2 = Read_hfc(cs, HFCSX_FIF_Z2H); + z2 = ((z2 << 8) | Read_hfc(cs, HFCSX_FIF_Z2L)); + + if (cs->debug & L1_DEB_ISAC_FIFO) + debugl1(cs, "hfcsx_read_fifo %d f1(%x) f2(%x) z1(f2)(%x) z2(f2)(%x)", + fifo, f1, f2, z1, z2); + /* now determine bytes in actual FIFO buffer */ + count = z1 - z2; + if (count <= 0) + count += fifo_size; /* count now contains buffered bytes */ + count++; + + if (cs->debug & L1_DEB_ISAC_FIFO) + debugl1(cs, "hfcsx_read_fifo %d count %u)", + fifo, count); + + if ((count > fifo_size) || (count < 4)) { + if (cs->debug & L1_DEB_WARN) + debugl1(cs, "hfcsx_read_fifo %d packet inv. len %d ", fifo , count); + while (count) { + count--; /* empty fifo */ + Read_hfc(cs, HFCSX_FIF_DRD); + } + skb = NULL; + } else + if ((skb = dev_alloc_skb(count - 3))) { + count -= 3; + dst = skb_put(skb, count); + + while (count--) + *dst++ = Read_hfc(cs, HFCSX_FIF_DRD); + + Read_hfc(cs, HFCSX_FIF_DRD); /* CRC 1 */ + Read_hfc(cs, HFCSX_FIF_DRD); /* CRC 2 */ + if (Read_hfc(cs, HFCSX_FIF_DRD)) { + dev_kfree_skb_irq(skb); + if (cs->debug & L1_DEB_ISAC_FIFO) + debugl1(cs, "hfcsx_read_fifo %d crc error", fifo); + skb = NULL; + } + } else { + printk(KERN_WARNING "HFC-SX: receive out of memory\n"); + return (NULL); + } + + Read_hfc(cs, HFCSX_FIF_INCF2); /* increment F2 */ + udelay(1); + while (bytein(cs->hw.hfcsx.base + 1) & 1); /* wait for busy */ + udelay(1); + } while (!skb); /* retry in case of crc error */ + return (skb); +} + +/******************************************/ +/* free hardware resources used by driver */ +/******************************************/ +static void +release_io_hfcsx(struct IsdnCardState *cs) +{ + cs->hw.hfcsx.int_m2 = 0; /* interrupt output off ! */ + Write_hfc(cs, HFCSX_INT_M2, cs->hw.hfcsx.int_m2); + Write_hfc(cs, HFCSX_CIRM, HFCSX_RESET); /* Reset On */ + msleep(30); /* Timeout 30ms */ + Write_hfc(cs, HFCSX_CIRM, 0); /* Reset Off */ + del_timer(&cs->hw.hfcsx.timer); + release_region(cs->hw.hfcsx.base, 2); /* release IO-Block */ + kfree(cs->hw.hfcsx.extra); + cs->hw.hfcsx.extra = NULL; +} + +/**********************************************************/ +/* set_fifo_size determines the size of the RAM and FIFOs */ +/* returning 0 -> need to reset the chip again. */ +/**********************************************************/ +static int set_fifo_size(struct IsdnCardState *cs) +{ + + if (cs->hw.hfcsx.b_fifo_size) return (1); /* already determined */ + + if ((cs->hw.hfcsx.chip >> 4) == 9) { + cs->hw.hfcsx.b_fifo_size = B_FIFO_SIZE_32K; + return (1); + } + + cs->hw.hfcsx.b_fifo_size = B_FIFO_SIZE_8K; + cs->hw.hfcsx.cirm |= 0x10; /* only 8K of ram */ + return (0); + +} + +/********************************************************************************/ +/* function called to reset the HFC SX chip. A complete software reset of chip */ +/* and fifos is done. */ +/********************************************************************************/ +static void +reset_hfcsx(struct IsdnCardState *cs) +{ + cs->hw.hfcsx.int_m2 = 0; /* interrupt output off ! */ + Write_hfc(cs, HFCSX_INT_M2, cs->hw.hfcsx.int_m2); + + printk(KERN_INFO "HFC_SX: resetting card\n"); + while (1) { + Write_hfc(cs, HFCSX_CIRM, HFCSX_RESET | cs->hw.hfcsx.cirm); /* Reset */ + mdelay(30); + Write_hfc(cs, HFCSX_CIRM, cs->hw.hfcsx.cirm); /* Reset Off */ + mdelay(20); + if (Read_hfc(cs, HFCSX_STATUS) & 2) + printk(KERN_WARNING "HFC-SX init bit busy\n"); + cs->hw.hfcsx.last_fifo = 0xff; /* invalidate */ + if (!set_fifo_size(cs)) continue; + break; + } + + cs->hw.hfcsx.trm = 0 + HFCSX_BTRANS_THRESMASK; /* no echo connect , threshold */ + Write_hfc(cs, HFCSX_TRM, cs->hw.hfcsx.trm); + + Write_hfc(cs, HFCSX_CLKDEL, 0x0e); /* ST-Bit delay for TE-Mode */ + cs->hw.hfcsx.sctrl_e = HFCSX_AUTO_AWAKE; + Write_hfc(cs, HFCSX_SCTRL_E, cs->hw.hfcsx.sctrl_e); /* S/T Auto awake */ + cs->hw.hfcsx.bswapped = 0; /* no exchange */ + cs->hw.hfcsx.nt_mode = 0; /* we are in TE mode */ + cs->hw.hfcsx.ctmt = HFCSX_TIM3_125 | HFCSX_AUTO_TIMER; + Write_hfc(cs, HFCSX_CTMT, cs->hw.hfcsx.ctmt); + + cs->hw.hfcsx.int_m1 = HFCSX_INTS_DTRANS | HFCSX_INTS_DREC | + HFCSX_INTS_L1STATE | HFCSX_INTS_TIMER; + Write_hfc(cs, HFCSX_INT_M1, cs->hw.hfcsx.int_m1); + + /* Clear already pending ints */ + if (Read_hfc(cs, HFCSX_INT_S1)); + + Write_hfc(cs, HFCSX_STATES, HFCSX_LOAD_STATE | 2); /* HFC ST 2 */ + udelay(10); + Write_hfc(cs, HFCSX_STATES, 2); /* HFC ST 2 */ + cs->hw.hfcsx.mst_m = HFCSX_MASTER; /* HFC Master Mode */ + + Write_hfc(cs, HFCSX_MST_MODE, cs->hw.hfcsx.mst_m); + cs->hw.hfcsx.sctrl = 0x40; /* set tx_lo mode, error in datasheet ! */ + Write_hfc(cs, HFCSX_SCTRL, cs->hw.hfcsx.sctrl); + cs->hw.hfcsx.sctrl_r = 0; + Write_hfc(cs, HFCSX_SCTRL_R, cs->hw.hfcsx.sctrl_r); + + /* Init GCI/IOM2 in master mode */ + /* Slots 0 and 1 are set for B-chan 1 and 2 */ + /* D- and monitor/CI channel are not enabled */ + /* STIO1 is used as output for data, B1+B2 from ST->IOM+HFC */ + /* STIO2 is used as data input, B1+B2 from IOM->ST */ + /* ST B-channel send disabled -> continuous 1s */ + /* The IOM slots are always enabled */ + cs->hw.hfcsx.conn = 0x36; /* set data flow directions */ + Write_hfc(cs, HFCSX_CONNECT, cs->hw.hfcsx.conn); + Write_hfc(cs, HFCSX_B1_SSL, 0x80); /* B1-Slot 0 STIO1 out enabled */ + Write_hfc(cs, HFCSX_B2_SSL, 0x81); /* B2-Slot 1 STIO1 out enabled */ + Write_hfc(cs, HFCSX_B1_RSL, 0x80); /* B1-Slot 0 STIO2 in enabled */ + Write_hfc(cs, HFCSX_B2_RSL, 0x81); /* B2-Slot 1 STIO2 in enabled */ + + /* Finally enable IRQ output */ + cs->hw.hfcsx.int_m2 = HFCSX_IRQ_ENABLE; + Write_hfc(cs, HFCSX_INT_M2, cs->hw.hfcsx.int_m2); + if (Read_hfc(cs, HFCSX_INT_S2)); +} + +/***************************************************/ +/* Timer function called when kernel timer expires */ +/***************************************************/ +static void +hfcsx_Timer(struct timer_list *t) +{ + struct IsdnCardState *cs = from_timer(cs, t, hw.hfcsx.timer); + cs->hw.hfcsx.timer.expires = jiffies + 75; + /* WD RESET */ +/* WriteReg(cs, HFCD_DATA, HFCD_CTMT, cs->hw.hfcsx.ctmt | 0x80); + add_timer(&cs->hw.hfcsx.timer); +*/ +} + +/************************************************/ +/* select a b-channel entry matching and active */ +/************************************************/ +static +struct BCState * +Sel_BCS(struct IsdnCardState *cs, int channel) +{ + if (cs->bcs[0].mode && (cs->bcs[0].channel == channel)) + return (&cs->bcs[0]); + else if (cs->bcs[1].mode && (cs->bcs[1].channel == channel)) + return (&cs->bcs[1]); + else + return (NULL); +} + +/*******************************/ +/* D-channel receive procedure */ +/*******************************/ +static +int +receive_dmsg(struct IsdnCardState *cs) +{ + struct sk_buff *skb; + int count = 5; + + if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) { + debugl1(cs, "rec_dmsg blocked"); + return (1); + } + + do { + skb = read_fifo(cs, HFCSX_SEL_D_RX, 0); + if (skb) { + skb_queue_tail(&cs->rq, skb); + schedule_event(cs, D_RCVBUFREADY); + } + } while (--count && skb); + + test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); + return (1); +} + +/**********************************/ +/* B-channel main receive routine */ +/**********************************/ +static void +main_rec_hfcsx(struct BCState *bcs) +{ + struct IsdnCardState *cs = bcs->cs; + int count = 5; + struct sk_buff *skb; + +Begin: + count--; + if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) { + debugl1(cs, "rec_data %d blocked", bcs->channel); + return; + } + skb = read_fifo(cs, ((bcs->channel) && (!cs->hw.hfcsx.bswapped)) ? + HFCSX_SEL_B2_RX : HFCSX_SEL_B1_RX, + (bcs->mode == L1_MODE_TRANS) ? + HFCSX_BTRANS_THRESHOLD : 0); + + if (skb) { + skb_queue_tail(&bcs->rqueue, skb); + schedule_event(bcs, B_RCVBUFREADY); + } + + test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); + if (count && skb) + goto Begin; + return; +} + +/**************************/ +/* D-channel send routine */ +/**************************/ +static void +hfcsx_fill_dfifo(struct IsdnCardState *cs) +{ + if (!cs->tx_skb) + return; + if (cs->tx_skb->len <= 0) + return; + + if (write_fifo(cs, cs->tx_skb, HFCSX_SEL_D_TX, 0)) { + dev_kfree_skb_any(cs->tx_skb); + cs->tx_skb = NULL; + } + return; +} + +/**************************/ +/* B-channel send routine */ +/**************************/ +static void +hfcsx_fill_fifo(struct BCState *bcs) +{ + struct IsdnCardState *cs = bcs->cs; + + if (!bcs->tx_skb) + return; + if (bcs->tx_skb->len <= 0) + return; + + if (write_fifo(cs, bcs->tx_skb, + ((bcs->channel) && (!cs->hw.hfcsx.bswapped)) ? + HFCSX_SEL_B2_TX : HFCSX_SEL_B1_TX, + (bcs->mode == L1_MODE_TRANS) ? + HFCSX_BTRANS_THRESHOLD : 0)) { + + bcs->tx_cnt -= bcs->tx_skb->len; + if (test_bit(FLG_LLI_L1WAKEUP, &bcs->st->lli.flag) && + (PACKET_NOACK != bcs->tx_skb->pkt_type)) { + u_long flags; + spin_lock_irqsave(&bcs->aclock, flags); + bcs->ackcnt += bcs->tx_skb->len; + spin_unlock_irqrestore(&bcs->aclock, flags); + schedule_event(bcs, B_ACKPENDING); + } + dev_kfree_skb_any(bcs->tx_skb); + bcs->tx_skb = NULL; + test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag); + } +} + +/**********************************************/ +/* D-channel l1 state call for leased NT-mode */ +/**********************************************/ +static void +dch_nt_l2l1(struct PStack *st, int pr, void *arg) +{ + struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware; + + switch (pr) { + case (PH_DATA | REQUEST): + case (PH_PULL | REQUEST): + case (PH_PULL | INDICATION): + st->l1.l1hw(st, pr, arg); + break; + case (PH_ACTIVATE | REQUEST): + st->l1.l1l2(st, PH_ACTIVATE | CONFIRM, NULL); + break; + case (PH_TESTLOOP | REQUEST): + if (1 & (long) arg) + debugl1(cs, "PH_TEST_LOOP B1"); + if (2 & (long) arg) + debugl1(cs, "PH_TEST_LOOP B2"); + if (!(3 & (long) arg)) + debugl1(cs, "PH_TEST_LOOP DISABLED"); + st->l1.l1hw(st, HW_TESTLOOP | REQUEST, arg); + break; + default: + if (cs->debug) + debugl1(cs, "dch_nt_l2l1 msg %04X unhandled", pr); + break; + } +} + + + +/***********************/ +/* set/reset echo mode */ +/***********************/ +static int +hfcsx_auxcmd(struct IsdnCardState *cs, isdn_ctrl *ic) +{ + unsigned long flags; + int i = *(unsigned int *) ic->parm.num; + + if ((ic->arg == 98) && + (!(cs->hw.hfcsx.int_m1 & (HFCSX_INTS_B2TRANS + HFCSX_INTS_B2REC + HFCSX_INTS_B1TRANS + HFCSX_INTS_B1REC)))) { + spin_lock_irqsave(&cs->lock, flags); + Write_hfc(cs, HFCSX_STATES, HFCSX_LOAD_STATE | 0); /* HFC ST G0 */ + udelay(10); + cs->hw.hfcsx.sctrl |= SCTRL_MODE_NT; + Write_hfc(cs, HFCSX_SCTRL, cs->hw.hfcsx.sctrl); /* set NT-mode */ + udelay(10); + Write_hfc(cs, HFCSX_STATES, HFCSX_LOAD_STATE | 1); /* HFC ST G1 */ + udelay(10); + Write_hfc(cs, HFCSX_STATES, 1 | HFCSX_ACTIVATE | HFCSX_DO_ACTION); + cs->dc.hfcsx.ph_state = 1; + cs->hw.hfcsx.nt_mode = 1; + cs->hw.hfcsx.nt_timer = 0; + spin_unlock_irqrestore(&cs->lock, flags); + cs->stlist->l2.l2l1 = dch_nt_l2l1; + debugl1(cs, "NT mode activated"); + return (0); + } + if ((cs->chanlimit > 1) || (cs->hw.hfcsx.bswapped) || + (cs->hw.hfcsx.nt_mode) || (ic->arg != 12)) + return (-EINVAL); + + if (i) { + cs->logecho = 1; + cs->hw.hfcsx.trm |= 0x20; /* enable echo chan */ + cs->hw.hfcsx.int_m1 |= HFCSX_INTS_B2REC; + /* reset Channel !!!!! */ + } else { + cs->logecho = 0; + cs->hw.hfcsx.trm &= ~0x20; /* disable echo chan */ + cs->hw.hfcsx.int_m1 &= ~HFCSX_INTS_B2REC; + } + cs->hw.hfcsx.sctrl_r &= ~SCTRL_B2_ENA; + cs->hw.hfcsx.sctrl &= ~SCTRL_B2_ENA; + cs->hw.hfcsx.conn |= 0x10; /* B2-IOM -> B2-ST */ + cs->hw.hfcsx.ctmt &= ~2; + spin_lock_irqsave(&cs->lock, flags); + Write_hfc(cs, HFCSX_CTMT, cs->hw.hfcsx.ctmt); + Write_hfc(cs, HFCSX_SCTRL_R, cs->hw.hfcsx.sctrl_r); + Write_hfc(cs, HFCSX_SCTRL, cs->hw.hfcsx.sctrl); + Write_hfc(cs, HFCSX_CONNECT, cs->hw.hfcsx.conn); + Write_hfc(cs, HFCSX_TRM, cs->hw.hfcsx.trm); + Write_hfc(cs, HFCSX_INT_M1, cs->hw.hfcsx.int_m1); + spin_unlock_irqrestore(&cs->lock, flags); + return (0); +} /* hfcsx_auxcmd */ + +/*****************************/ +/* E-channel receive routine */ +/*****************************/ +static void +receive_emsg(struct IsdnCardState *cs) +{ + int count = 5; + u_char *ptr; + struct sk_buff *skb; + + if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) { + debugl1(cs, "echo_rec_data blocked"); + return; + } + do { + skb = read_fifo(cs, HFCSX_SEL_B2_RX, 0); + if (skb) { + if (cs->debug & DEB_DLOG_HEX) { + ptr = cs->dlog; + if ((skb->len) < MAX_DLOG_SPACE / 3 - 10) { + *ptr++ = 'E'; + *ptr++ = 'C'; + *ptr++ = 'H'; + *ptr++ = 'O'; + *ptr++ = ':'; + ptr += QuickHex(ptr, skb->data, skb->len); + ptr--; + *ptr++ = '\n'; + *ptr = 0; + HiSax_putstatus(cs, NULL, cs->dlog); + } else + HiSax_putstatus(cs, "LogEcho: ", "warning Frame too big (%d)", skb->len); + } + dev_kfree_skb_any(skb); + } + } while (--count && skb); + + test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); + return; +} /* receive_emsg */ + + +/*********************/ +/* Interrupt handler */ +/*********************/ +static irqreturn_t +hfcsx_interrupt(int intno, void *dev_id) +{ + struct IsdnCardState *cs = dev_id; + u_char exval; + struct BCState *bcs; + int count = 15; + u_long flags; + u_char val, stat; + + if (!(cs->hw.hfcsx.int_m2 & 0x08)) + return IRQ_NONE; /* not initialised */ + + spin_lock_irqsave(&cs->lock, flags); + if (HFCSX_ANYINT & (stat = Read_hfc(cs, HFCSX_STATUS))) { + val = Read_hfc(cs, HFCSX_INT_S1); + if (cs->debug & L1_DEB_ISAC) + debugl1(cs, "HFC-SX: stat(%02x) s1(%02x)", stat, val); + } else { + spin_unlock_irqrestore(&cs->lock, flags); + return IRQ_NONE; + } + if (cs->debug & L1_DEB_ISAC) + debugl1(cs, "HFC-SX irq %x %s", val, + test_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags) ? + "locked" : "unlocked"); + val &= cs->hw.hfcsx.int_m1; + if (val & 0x40) { /* state machine irq */ + exval = Read_hfc(cs, HFCSX_STATES) & 0xf; + if (cs->debug & L1_DEB_ISAC) + debugl1(cs, "ph_state chg %d->%d", cs->dc.hfcsx.ph_state, + exval); + cs->dc.hfcsx.ph_state = exval; + schedule_event(cs, D_L1STATECHANGE); + val &= ~0x40; + } + if (val & 0x80) { /* timer irq */ + if (cs->hw.hfcsx.nt_mode) { + if ((--cs->hw.hfcsx.nt_timer) < 0) + schedule_event(cs, D_L1STATECHANGE); + } + val &= ~0x80; + Write_hfc(cs, HFCSX_CTMT, cs->hw.hfcsx.ctmt | HFCSX_CLTIMER); + } + while (val) { + if (test_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) { + cs->hw.hfcsx.int_s1 |= val; + spin_unlock_irqrestore(&cs->lock, flags); + return IRQ_HANDLED; + } + if (cs->hw.hfcsx.int_s1 & 0x18) { + exval = val; + val = cs->hw.hfcsx.int_s1; + cs->hw.hfcsx.int_s1 = exval; + } + if (val & 0x08) { + if (!(bcs = Sel_BCS(cs, cs->hw.hfcsx.bswapped ? 1 : 0))) { + if (cs->debug) + debugl1(cs, "hfcsx spurious 0x08 IRQ"); + } else + main_rec_hfcsx(bcs); + } + if (val & 0x10) { + if (cs->logecho) + receive_emsg(cs); + else if (!(bcs = Sel_BCS(cs, 1))) { + if (cs->debug) + debugl1(cs, "hfcsx spurious 0x10 IRQ"); + } else + main_rec_hfcsx(bcs); + } + if (val & 0x01) { + if (!(bcs = Sel_BCS(cs, cs->hw.hfcsx.bswapped ? 1 : 0))) { + if (cs->debug) + debugl1(cs, "hfcsx spurious 0x01 IRQ"); + } else { + if (bcs->tx_skb) { + if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) { + hfcsx_fill_fifo(bcs); + test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); + } else + debugl1(cs, "fill_data %d blocked", bcs->channel); + } else { + if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) { + if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) { + hfcsx_fill_fifo(bcs); + test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); + } else + debugl1(cs, "fill_data %d blocked", bcs->channel); + } else { + schedule_event(bcs, B_XMTBUFREADY); + } + } + } + } + if (val & 0x02) { + if (!(bcs = Sel_BCS(cs, 1))) { + if (cs->debug) + debugl1(cs, "hfcsx spurious 0x02 IRQ"); + } else { + if (bcs->tx_skb) { + if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) { + hfcsx_fill_fifo(bcs); + test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); + } else + debugl1(cs, "fill_data %d blocked", bcs->channel); + } else { + if ((bcs->tx_skb = skb_dequeue(&bcs->squeue))) { + if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) { + hfcsx_fill_fifo(bcs); + test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); + } else + debugl1(cs, "fill_data %d blocked", bcs->channel); + } else { + schedule_event(bcs, B_XMTBUFREADY); + } + } + } + } + if (val & 0x20) { /* receive dframe */ + receive_dmsg(cs); + } + if (val & 0x04) { /* dframe transmitted */ + if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags)) + del_timer(&cs->dbusytimer); + if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags)) + schedule_event(cs, D_CLEARBUSY); + if (cs->tx_skb) { + if (cs->tx_skb->len) { + if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) { + hfcsx_fill_dfifo(cs); + test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); + } else { + debugl1(cs, "hfcsx_fill_dfifo irq blocked"); + } + goto afterXPR; + } else { + dev_kfree_skb_irq(cs->tx_skb); + cs->tx_cnt = 0; + cs->tx_skb = NULL; + } + } + if ((cs->tx_skb = skb_dequeue(&cs->sq))) { + cs->tx_cnt = 0; + if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) { + hfcsx_fill_dfifo(cs); + test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); + } else { + debugl1(cs, "hfcsx_fill_dfifo irq blocked"); + } + } else + schedule_event(cs, D_XMTBUFREADY); + } + afterXPR: + if (cs->hw.hfcsx.int_s1 && count--) { + val = cs->hw.hfcsx.int_s1; + cs->hw.hfcsx.int_s1 = 0; + if (cs->debug & L1_DEB_ISAC) + debugl1(cs, "HFC-SX irq %x loop %d", val, 15 - count); + } else + val = 0; + } + spin_unlock_irqrestore(&cs->lock, flags); + return IRQ_HANDLED; +} + +/********************************************************************/ +/* timer callback for D-chan busy resolution. Currently no function */ +/********************************************************************/ +static void +hfcsx_dbusy_timer(struct timer_list *t) +{ +} + +/*************************************/ +/* Layer 1 D-channel hardware access */ +/*************************************/ +static void +HFCSX_l1hw(struct PStack *st, int pr, void *arg) +{ + struct IsdnCardState *cs = (struct IsdnCardState *) st->l1.hardware; + struct sk_buff *skb = arg; + u_long flags; + + switch (pr) { + case (PH_DATA | REQUEST): + if (cs->debug & DEB_DLOG_HEX) + LogFrame(cs, skb->data, skb->len); + if (cs->debug & DEB_DLOG_VERBOSE) + dlogframe(cs, skb, 0); + spin_lock_irqsave(&cs->lock, flags); + if (cs->tx_skb) { + skb_queue_tail(&cs->sq, skb); +#ifdef L2FRAME_DEBUG /* psa */ + if (cs->debug & L1_DEB_LAPD) + Logl2Frame(cs, skb, "PH_DATA Queued", 0); +#endif + } else { + cs->tx_skb = skb; + cs->tx_cnt = 0; +#ifdef L2FRAME_DEBUG /* psa */ + if (cs->debug & L1_DEB_LAPD) + Logl2Frame(cs, skb, "PH_DATA", 0); +#endif + if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) { + hfcsx_fill_dfifo(cs); + test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); + } else + debugl1(cs, "hfcsx_fill_dfifo blocked"); + + } + spin_unlock_irqrestore(&cs->lock, flags); + break; + case (PH_PULL | INDICATION): + spin_lock_irqsave(&cs->lock, flags); + if (cs->tx_skb) { + if (cs->debug & L1_DEB_WARN) + debugl1(cs, " l2l1 tx_skb exist this shouldn't happen"); + skb_queue_tail(&cs->sq, skb); + spin_unlock_irqrestore(&cs->lock, flags); + break; + } + if (cs->debug & DEB_DLOG_HEX) + LogFrame(cs, skb->data, skb->len); + if (cs->debug & DEB_DLOG_VERBOSE) + dlogframe(cs, skb, 0); + cs->tx_skb = skb; + cs->tx_cnt = 0; +#ifdef L2FRAME_DEBUG /* psa */ + if (cs->debug & L1_DEB_LAPD) + Logl2Frame(cs, skb, "PH_DATA_PULLED", 0); +#endif + if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) { + hfcsx_fill_dfifo(cs); + test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); + } else + debugl1(cs, "hfcsx_fill_dfifo blocked"); + spin_unlock_irqrestore(&cs->lock, flags); + break; + case (PH_PULL | REQUEST): +#ifdef L2FRAME_DEBUG /* psa */ + if (cs->debug & L1_DEB_LAPD) + debugl1(cs, "-> PH_REQUEST_PULL"); +#endif + if (!cs->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 (HW_RESET | REQUEST): + spin_lock_irqsave(&cs->lock, flags); + Write_hfc(cs, HFCSX_STATES, HFCSX_LOAD_STATE | 3); /* HFC ST 3 */ + udelay(6); + Write_hfc(cs, HFCSX_STATES, 3); /* HFC ST 2 */ + cs->hw.hfcsx.mst_m |= HFCSX_MASTER; + Write_hfc(cs, HFCSX_MST_MODE, cs->hw.hfcsx.mst_m); + Write_hfc(cs, HFCSX_STATES, HFCSX_ACTIVATE | HFCSX_DO_ACTION); + spin_unlock_irqrestore(&cs->lock, flags); + l1_msg(cs, HW_POWERUP | CONFIRM, NULL); + break; + case (HW_ENABLE | REQUEST): + spin_lock_irqsave(&cs->lock, flags); + Write_hfc(cs, HFCSX_STATES, HFCSX_ACTIVATE | HFCSX_DO_ACTION); + spin_unlock_irqrestore(&cs->lock, flags); + break; + case (HW_DEACTIVATE | REQUEST): + spin_lock_irqsave(&cs->lock, flags); + cs->hw.hfcsx.mst_m &= ~HFCSX_MASTER; + Write_hfc(cs, HFCSX_MST_MODE, cs->hw.hfcsx.mst_m); + spin_unlock_irqrestore(&cs->lock, flags); + break; + case (HW_INFO3 | REQUEST): + spin_lock_irqsave(&cs->lock, flags); + cs->hw.hfcsx.mst_m |= HFCSX_MASTER; + Write_hfc(cs, HFCSX_MST_MODE, cs->hw.hfcsx.mst_m); + spin_unlock_irqrestore(&cs->lock, flags); + break; + case (HW_TESTLOOP | REQUEST): + spin_lock_irqsave(&cs->lock, flags); + switch ((long) arg) { + case (1): + Write_hfc(cs, HFCSX_B1_SSL, 0x80); /* tx slot */ + Write_hfc(cs, HFCSX_B1_RSL, 0x80); /* rx slot */ + cs->hw.hfcsx.conn = (cs->hw.hfcsx.conn & ~7) | 1; + Write_hfc(cs, HFCSX_CONNECT, cs->hw.hfcsx.conn); + break; + case (2): + Write_hfc(cs, HFCSX_B2_SSL, 0x81); /* tx slot */ + Write_hfc(cs, HFCSX_B2_RSL, 0x81); /* rx slot */ + cs->hw.hfcsx.conn = (cs->hw.hfcsx.conn & ~0x38) | 0x08; + Write_hfc(cs, HFCSX_CONNECT, cs->hw.hfcsx.conn); + break; + default: + spin_unlock_irqrestore(&cs->lock, flags); + if (cs->debug & L1_DEB_WARN) + debugl1(cs, "hfcsx_l1hw loop invalid %4lx", (unsigned long)arg); + return; + } + cs->hw.hfcsx.trm |= 0x80; /* enable IOM-loop */ + Write_hfc(cs, HFCSX_TRM, cs->hw.hfcsx.trm); + spin_unlock_irqrestore(&cs->lock, flags); + break; + default: + if (cs->debug & L1_DEB_WARN) + debugl1(cs, "hfcsx_l1hw unknown pr %4x", pr); + break; + } +} + +/***********************************************/ +/* called during init setting l1 stack pointer */ +/***********************************************/ +static void +setstack_hfcsx(struct PStack *st, struct IsdnCardState *cs) +{ + st->l1.l1hw = HFCSX_l1hw; +} + +/**************************************/ +/* send B-channel data if not blocked */ +/**************************************/ +static void +hfcsx_send_data(struct BCState *bcs) +{ + struct IsdnCardState *cs = bcs->cs; + + if (!test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) { + hfcsx_fill_fifo(bcs); + test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); + } else + debugl1(cs, "send_data %d blocked", bcs->channel); +} + +/***************************************************************/ +/* activate/deactivate hardware for selected channels and mode */ +/***************************************************************/ +static void +mode_hfcsx(struct BCState *bcs, int mode, int bc) +{ + struct IsdnCardState *cs = bcs->cs; + int fifo2; + + if (cs->debug & L1_DEB_HSCX) + debugl1(cs, "HFCSX bchannel mode %d bchan %d/%d", + mode, bc, bcs->channel); + bcs->mode = mode; + bcs->channel = bc; + fifo2 = bc; + if (cs->chanlimit > 1) { + cs->hw.hfcsx.bswapped = 0; /* B1 and B2 normal mode */ + cs->hw.hfcsx.sctrl_e &= ~0x80; + } else { + if (bc) { + if (mode != L1_MODE_NULL) { + cs->hw.hfcsx.bswapped = 1; /* B1 and B2 exchanged */ + cs->hw.hfcsx.sctrl_e |= 0x80; + } else { + cs->hw.hfcsx.bswapped = 0; /* B1 and B2 normal mode */ + cs->hw.hfcsx.sctrl_e &= ~0x80; + } + fifo2 = 0; + } else { + cs->hw.hfcsx.bswapped = 0; /* B1 and B2 normal mode */ + cs->hw.hfcsx.sctrl_e &= ~0x80; + } + } + switch (mode) { + case (L1_MODE_NULL): + if (bc) { + cs->hw.hfcsx.sctrl &= ~SCTRL_B2_ENA; + cs->hw.hfcsx.sctrl_r &= ~SCTRL_B2_ENA; + } else { + cs->hw.hfcsx.sctrl &= ~SCTRL_B1_ENA; + cs->hw.hfcsx.sctrl_r &= ~SCTRL_B1_ENA; + } + if (fifo2) { + cs->hw.hfcsx.int_m1 &= ~(HFCSX_INTS_B2TRANS + HFCSX_INTS_B2REC); + } else { + cs->hw.hfcsx.int_m1 &= ~(HFCSX_INTS_B1TRANS + HFCSX_INTS_B1REC); + } + break; + case (L1_MODE_TRANS): + if (bc) { + cs->hw.hfcsx.sctrl |= SCTRL_B2_ENA; + cs->hw.hfcsx.sctrl_r |= SCTRL_B2_ENA; + } else { + cs->hw.hfcsx.sctrl |= SCTRL_B1_ENA; + cs->hw.hfcsx.sctrl_r |= SCTRL_B1_ENA; + } + if (fifo2) { + cs->hw.hfcsx.int_m1 |= (HFCSX_INTS_B2TRANS + HFCSX_INTS_B2REC); + cs->hw.hfcsx.ctmt |= 2; + cs->hw.hfcsx.conn &= ~0x18; + } else { + cs->hw.hfcsx.int_m1 |= (HFCSX_INTS_B1TRANS + HFCSX_INTS_B1REC); + cs->hw.hfcsx.ctmt |= 1; + cs->hw.hfcsx.conn &= ~0x03; + } + break; + case (L1_MODE_HDLC): + if (bc) { + cs->hw.hfcsx.sctrl |= SCTRL_B2_ENA; + cs->hw.hfcsx.sctrl_r |= SCTRL_B2_ENA; + } else { + cs->hw.hfcsx.sctrl |= SCTRL_B1_ENA; + cs->hw.hfcsx.sctrl_r |= SCTRL_B1_ENA; + } + if (fifo2) { + cs->hw.hfcsx.int_m1 |= (HFCSX_INTS_B2TRANS + HFCSX_INTS_B2REC); + cs->hw.hfcsx.ctmt &= ~2; + cs->hw.hfcsx.conn &= ~0x18; + } else { + cs->hw.hfcsx.int_m1 |= (HFCSX_INTS_B1TRANS + HFCSX_INTS_B1REC); + cs->hw.hfcsx.ctmt &= ~1; + cs->hw.hfcsx.conn &= ~0x03; + } + break; + case (L1_MODE_EXTRN): + if (bc) { + cs->hw.hfcsx.conn |= 0x10; + cs->hw.hfcsx.sctrl |= SCTRL_B2_ENA; + cs->hw.hfcsx.sctrl_r |= SCTRL_B2_ENA; + cs->hw.hfcsx.int_m1 &= ~(HFCSX_INTS_B2TRANS + HFCSX_INTS_B2REC); + } else { + cs->hw.hfcsx.conn |= 0x02; + cs->hw.hfcsx.sctrl |= SCTRL_B1_ENA; + cs->hw.hfcsx.sctrl_r |= SCTRL_B1_ENA; + cs->hw.hfcsx.int_m1 &= ~(HFCSX_INTS_B1TRANS + HFCSX_INTS_B1REC); + } + break; + } + Write_hfc(cs, HFCSX_SCTRL_E, cs->hw.hfcsx.sctrl_e); + Write_hfc(cs, HFCSX_INT_M1, cs->hw.hfcsx.int_m1); + Write_hfc(cs, HFCSX_SCTRL, cs->hw.hfcsx.sctrl); + Write_hfc(cs, HFCSX_SCTRL_R, cs->hw.hfcsx.sctrl_r); + Write_hfc(cs, HFCSX_CTMT, cs->hw.hfcsx.ctmt); + Write_hfc(cs, HFCSX_CONNECT, cs->hw.hfcsx.conn); + if (mode != L1_MODE_EXTRN) { + reset_fifo(cs, fifo2 ? HFCSX_SEL_B2_RX : HFCSX_SEL_B1_RX); + reset_fifo(cs, fifo2 ? HFCSX_SEL_B2_TX : HFCSX_SEL_B1_TX); + } +} + +/******************************/ +/* Layer2 -> Layer 1 Transfer */ +/******************************/ +static void +hfcsx_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->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 "%s: this shouldn't happen\n", + __func__); + } else { +// test_and_set_bit(BC_FLG_BUSY, &bcs->Flag); + bcs->tx_skb = skb; + 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); + mode_hfcsx(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); + mode_hfcsx(bcs, 0, st->l1.bc); + spin_unlock_irqrestore(&bcs->cs->lock, flags); + st->l1.l1l2(st, PH_DEACTIVATE | CONFIRM, NULL); + break; + } +} + +/******************************************/ +/* deactivate B-channel access and queues */ +/******************************************/ +static void +close_hfcsx(struct BCState *bcs) +{ + mode_hfcsx(bcs, 0, bcs->channel); + if (test_and_clear_bit(BC_FLG_INIT, &bcs->Flag)) { + 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); + } + } +} + +/*************************************/ +/* init B-channel queues and control */ +/*************************************/ +static int +open_hfcsxstate(struct IsdnCardState *cs, struct BCState *bcs) +{ + if (!test_and_set_bit(BC_FLG_INIT, &bcs->Flag)) { + 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->tx_cnt = 0; + return (0); +} + +/*********************************/ +/* inits the stack for B-channel */ +/*********************************/ +static int +setstack_2b(struct PStack *st, struct BCState *bcs) +{ + bcs->channel = st->l1.bc; + if (open_hfcsxstate(st->l1.hardware, bcs)) + return (-1); + st->l1.bcs = bcs; + st->l2.l2l1 = hfcsx_l2l1; + setstack_manager(st); + bcs->st = st; + setstack_l1_B(st); + return (0); +} + +/***************************/ +/* handle L1 state changes */ +/***************************/ +static void +hfcsx_bh(struct work_struct *work) +{ + struct IsdnCardState *cs = + container_of(work, struct IsdnCardState, tqueue); + u_long flags; + + if (test_and_clear_bit(D_L1STATECHANGE, &cs->event)) { + if (!cs->hw.hfcsx.nt_mode) + switch (cs->dc.hfcsx.ph_state) { + case (0): + l1_msg(cs, HW_RESET | INDICATION, NULL); + break; + case (3): + l1_msg(cs, HW_DEACTIVATE | INDICATION, NULL); + break; + case (8): + l1_msg(cs, HW_RSYNC | INDICATION, NULL); + break; + case (6): + l1_msg(cs, HW_INFO2 | INDICATION, NULL); + break; + case (7): + l1_msg(cs, HW_INFO4_P8 | INDICATION, NULL); + break; + default: + break; + } else { + switch (cs->dc.hfcsx.ph_state) { + case (2): + spin_lock_irqsave(&cs->lock, flags); + if (cs->hw.hfcsx.nt_timer < 0) { + cs->hw.hfcsx.nt_timer = 0; + cs->hw.hfcsx.int_m1 &= ~HFCSX_INTS_TIMER; + Write_hfc(cs, HFCSX_INT_M1, cs->hw.hfcsx.int_m1); + /* Clear already pending ints */ + if (Read_hfc(cs, HFCSX_INT_S1)); + + Write_hfc(cs, HFCSX_STATES, 4 | HFCSX_LOAD_STATE); + udelay(10); + Write_hfc(cs, HFCSX_STATES, 4); + cs->dc.hfcsx.ph_state = 4; + } else { + cs->hw.hfcsx.int_m1 |= HFCSX_INTS_TIMER; + Write_hfc(cs, HFCSX_INT_M1, cs->hw.hfcsx.int_m1); + cs->hw.hfcsx.ctmt &= ~HFCSX_AUTO_TIMER; + cs->hw.hfcsx.ctmt |= HFCSX_TIM3_125; + Write_hfc(cs, HFCSX_CTMT, cs->hw.hfcsx.ctmt | HFCSX_CLTIMER); + Write_hfc(cs, HFCSX_CTMT, cs->hw.hfcsx.ctmt | HFCSX_CLTIMER); + cs->hw.hfcsx.nt_timer = NT_T1_COUNT; + Write_hfc(cs, HFCSX_STATES, 2 | HFCSX_NT_G2_G3); /* allow G2 -> G3 transition */ + } + spin_unlock_irqrestore(&cs->lock, flags); + break; + case (1): + case (3): + case (4): + spin_lock_irqsave(&cs->lock, flags); + cs->hw.hfcsx.nt_timer = 0; + cs->hw.hfcsx.int_m1 &= ~HFCSX_INTS_TIMER; + Write_hfc(cs, HFCSX_INT_M1, cs->hw.hfcsx.int_m1); + spin_unlock_irqrestore(&cs->lock, flags); + break; + default: + break; + } + } + } + if (test_and_clear_bit(D_RCVBUFREADY, &cs->event)) + DChannel_proc_rcv(cs); + if (test_and_clear_bit(D_XMTBUFREADY, &cs->event)) + DChannel_proc_xmt(cs); +} + + +/********************************/ +/* called for card init message */ +/********************************/ +static void inithfcsx(struct IsdnCardState *cs) +{ + cs->setstack_d = setstack_hfcsx; + cs->BC_Send_Data = &hfcsx_send_data; + cs->bcs[0].BC_SetStack = setstack_2b; + cs->bcs[1].BC_SetStack = setstack_2b; + cs->bcs[0].BC_Close = close_hfcsx; + cs->bcs[1].BC_Close = close_hfcsx; + mode_hfcsx(cs->bcs, 0, 0); + mode_hfcsx(cs->bcs + 1, 0, 1); +} + + + +/*******************************************/ +/* handle card messages from control layer */ +/*******************************************/ +static int +hfcsx_card_msg(struct IsdnCardState *cs, int mt, void *arg) +{ + u_long flags; + + if (cs->debug & L1_DEB_ISAC) + debugl1(cs, "HFCSX: card_msg %x", mt); + switch (mt) { + case CARD_RESET: + spin_lock_irqsave(&cs->lock, flags); + reset_hfcsx(cs); + spin_unlock_irqrestore(&cs->lock, flags); + return (0); + case CARD_RELEASE: + release_io_hfcsx(cs); + return (0); + case CARD_INIT: + spin_lock_irqsave(&cs->lock, flags); + inithfcsx(cs); + spin_unlock_irqrestore(&cs->lock, flags); + msleep(80); /* Timeout 80ms */ + /* now switch timer interrupt off */ + spin_lock_irqsave(&cs->lock, flags); + cs->hw.hfcsx.int_m1 &= ~HFCSX_INTS_TIMER; + Write_hfc(cs, HFCSX_INT_M1, cs->hw.hfcsx.int_m1); + /* reinit mode reg */ + Write_hfc(cs, HFCSX_MST_MODE, cs->hw.hfcsx.mst_m); + spin_unlock_irqrestore(&cs->lock, flags); + return (0); + case CARD_TEST: + return (0); + } + return (0); +} + +#ifdef __ISAPNP__ +static struct isapnp_device_id hfc_ids[] = { + { ISAPNP_VENDOR('T', 'A', 'G'), ISAPNP_FUNCTION(0x2620), + ISAPNP_VENDOR('T', 'A', 'G'), ISAPNP_FUNCTION(0x2620), + (unsigned long) "Teles 16.3c2" }, + { 0, } +}; + +static struct isapnp_device_id *ipid = &hfc_ids[0]; +static struct pnp_card *pnp_c = NULL; +#endif + +int setup_hfcsx(struct IsdnCard *card) +{ + struct IsdnCardState *cs = card->cs; + char tmp[64]; + + strcpy(tmp, hfcsx_revision); + printk(KERN_INFO "HiSax: HFC-SX driver Rev. %s\n", HiSax_getrev(tmp)); +#ifdef __ISAPNP__ + if (!card->para[1] && isapnp_present()) { + struct pnp_dev *pnp_d; + while (ipid->card_vendor) { + if ((pnp_c = pnp_find_card(ipid->card_vendor, + ipid->card_device, pnp_c))) { + pnp_d = NULL; + if ((pnp_d = pnp_find_dev(pnp_c, + ipid->vendor, ipid->function, pnp_d))) { + int err; + + printk(KERN_INFO "HiSax: %s detected\n", + (char *)ipid->driver_data); + pnp_disable_dev(pnp_d); + err = pnp_activate_dev(pnp_d); + if (err < 0) { + printk(KERN_WARNING "%s: pnp_activate_dev ret(%d)\n", + __func__, err); + return (0); + } + card->para[1] = pnp_port_start(pnp_d, 0); + card->para[0] = pnp_irq(pnp_d, 0); + if (card->para[0] == -1 || !card->para[1]) { + printk(KERN_ERR "HFC PnP:some resources are missing %ld/%lx\n", + card->para[0], card->para[1]); + pnp_disable_dev(pnp_d); + return (0); + } + break; + } else { + printk(KERN_ERR "HFC PnP: PnP error card found, no device\n"); + } + } + ipid++; + pnp_c = NULL; + } + if (!ipid->card_vendor) { + printk(KERN_INFO "HFC PnP: no ISAPnP card found\n"); + return (0); + } + } +#endif + cs->hw.hfcsx.base = card->para[1] & 0xfffe; + cs->irq = card->para[0]; + cs->hw.hfcsx.int_s1 = 0; + cs->dc.hfcsx.ph_state = 0; + cs->hw.hfcsx.fifo = 255; + if ((cs->typ == ISDN_CTYPE_HFC_SX) || + (cs->typ == ISDN_CTYPE_HFC_SP_PCMCIA)) { + if ((!cs->hw.hfcsx.base) || !request_region(cs->hw.hfcsx.base, 2, "HFCSX isdn")) { + printk(KERN_WARNING + "HiSax: HFC-SX io-base %#lx already in use\n", + cs->hw.hfcsx.base); + return (0); + } + byteout(cs->hw.hfcsx.base, cs->hw.hfcsx.base & 0xFF); + byteout(cs->hw.hfcsx.base + 1, + ((cs->hw.hfcsx.base >> 8) & 3) | 0x54); + udelay(10); + cs->hw.hfcsx.chip = Read_hfc(cs, HFCSX_CHIP_ID); + switch (cs->hw.hfcsx.chip >> 4) { + case 1: + tmp[0] = '+'; + break; + case 9: + tmp[0] = 'P'; + break; + default: + printk(KERN_WARNING + "HFC-SX: invalid chip id 0x%x\n", + cs->hw.hfcsx.chip >> 4); + release_region(cs->hw.hfcsx.base, 2); + return (0); + } + if (!ccd_sp_irqtab[cs->irq & 0xF]) { + printk(KERN_WARNING + "HFC_SX: invalid irq %d specified\n", cs->irq & 0xF); + release_region(cs->hw.hfcsx.base, 2); + return (0); + } + if (!(cs->hw.hfcsx.extra = + kmalloc(sizeof(struct hfcsx_extra), GFP_ATOMIC))) { + release_region(cs->hw.hfcsx.base, 2); + printk(KERN_WARNING "HFC-SX: unable to allocate memory\n"); + return (0); + } + printk(KERN_INFO "HFC-S%c chip detected at base 0x%x IRQ %d HZ %d\n", + tmp[0], (u_int) cs->hw.hfcsx.base, cs->irq, HZ); + cs->hw.hfcsx.int_m2 = 0; /* disable alle interrupts */ + cs->hw.hfcsx.int_m1 = 0; + Write_hfc(cs, HFCSX_INT_M1, cs->hw.hfcsx.int_m1); + Write_hfc(cs, HFCSX_INT_M2, cs->hw.hfcsx.int_m2); + } else + return (0); /* no valid card type */ + + timer_setup(&cs->dbusytimer, hfcsx_dbusy_timer, 0); + INIT_WORK(&cs->tqueue, hfcsx_bh); + cs->readisac = NULL; + cs->writeisac = NULL; + cs->readisacfifo = NULL; + cs->writeisacfifo = NULL; + cs->BC_Read_Reg = NULL; + cs->BC_Write_Reg = NULL; + cs->irq_func = &hfcsx_interrupt; + + cs->hw.hfcsx.b_fifo_size = 0; /* fifo size still unknown */ + cs->hw.hfcsx.cirm = ccd_sp_irqtab[cs->irq & 0xF]; /* RAM not evaluated */ + timer_setup(&cs->hw.hfcsx.timer, hfcsx_Timer, 0); + + reset_hfcsx(cs); + cs->cardmsg = &hfcsx_card_msg; + cs->auxcmd = &hfcsx_auxcmd; + return (1); +} |