hfc_sx.c
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上传日期:2013-04-10
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- /* $Id: hfc_sx.c,v 1.1.4.1 2001/11/20 14:19:35 kai Exp $
- *
- * level driver for CCD磗 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.
- *
- */
- #define __NO_VERSION__
- #include <linux/init.h>
- #include "hisax.h"
- #include "hfc_sx.h"
- #include "isdnl1.h"
- #include <linux/interrupt.h>
- #include <linux/isapnp.h>
- extern const char *CardType[];
- static const char *hfcsx_revision = "$Revision: 1.1.4.1 $";
- /***************************************/
- /* 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)
- { unsigned long flags;
- save_flags(flags);
- cli();
- byteout(cs->hw.hfcsx.base+1, regnum);
- byteout(cs->hw.hfcsx.base, val);
- restore_flags(flags);
- }
- static inline u_char
- Read_hfc(struct IsdnCardState *cs, u_char regnum)
- { unsigned long flags;
- u_char ret;
- save_flags(flags);
- cli();
- byteout(cs->hw.hfcsx.base+1, regnum);
- ret = bytein(cs->hw.hfcsx.base);
- restore_flags(flags);
- return(ret);
- }
- /**************************************************/
- /* select a fifo and remember which one for reuse */
- /**************************************************/
- static void
- fifo_select(struct IsdnCardState *cs, u_char fifo)
- { unsigned long flags;
- if (fifo == cs->hw.hfcsx.last_fifo)
- return; /* still valid */
- save_flags(flags);
- cli();
- 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 */
- restore_flags(flags);
- }
- /******************************************/
- /* reset the specified fifo to defaults. */
- /* If its a send fifo init needed markers */
- /******************************************/
- static void
- reset_fifo(struct IsdnCardState *cs, u_char fifo)
- { unsigned long flags;
- save_flags(flags);
- cli();
- 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 */
- restore_flags(flags);
- }
- /*************************************************************/
- /* 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(%ld/%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 */
- if ((skb = dev_alloc_skb(count))) {
- 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 %ld)",
- fifo, count);
- if ((count > fifo_size) || (count < 4)) {
- if (cs->debug & L1_DEB_WARN)
- debugl1(cs, "hfcsx_read_fifo %d paket 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 memoryn");
- 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 */
- /******************************************/
- void
- release_io_hfcsx(struct IsdnCardState *cs)
- {
- unsigned long flags;
- save_flags(flags);
- cli();
- cs->hw.hfcsx.int_m2 = 0; /* interrupt output off ! */
- Write_hfc(cs, HFCSX_INT_M2, cs->hw.hfcsx.int_m2);
- restore_flags(flags);
- Write_hfc(cs, HFCSX_CIRM, HFCSX_RESET); /* Reset On */
- sti();
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout((30 * HZ) / 1000); /* 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)
- {
- long flags;
- save_flags(flags);
- cli();
- 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 cardn");
- while (1) {
- Write_hfc(cs, HFCSX_CIRM, HFCSX_RESET | cs->hw.hfcsx.cirm ); /* Reset */
- sti();
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout((30 * HZ) / 1000); /* Timeout 30ms */
- Write_hfc(cs, HFCSX_CIRM, cs->hw.hfcsx.cirm); /* Reset Off */
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout((20 * HZ) / 1000); /* Timeout 20ms */
- if (Read_hfc(cs, HFCSX_STATUS) & 2)
- printk(KERN_WARNING "HFC-SX init bit busyn");
- 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 -> continous 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));
- restore_flags(flags);
- }
- /***************************************************/
- /* Timer function called when kernel timer expires */
- /***************************************************/
- static void
- hfcsx_Timer(struct IsdnCardState *cs)
- {
- 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);
- */
- }
- /*********************************/
- /* schedule a new D-channel task */
- /*********************************/
- static void
- sched_event_D_sx(struct IsdnCardState *cs, int event)
- {
- test_and_set_bit(event, &cs->event);
- queue_task(&cs->tqueue, &tq_immediate);
- mark_bh(IMMEDIATE_BH);
- }
- /*********************************/
- /* schedule a new b_channel task */
- /*********************************/
- static void
- hfcsx_sched_event(struct BCState *bcs, int event)
- {
- bcs->event |= 1 << event;
- queue_task(&bcs->tqueue, &tq_immediate);
- mark_bh(IMMEDIATE_BH);
- }
- /************************************************/
- /* 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);
- sched_event_D_sx(cs, D_RCVBUFREADY);
- }
- } while (--count && skb);
- test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
- return (1);
- }
- /**********************************/
- /* B-channel main receive routine */
- /**********************************/
- void
- main_rec_hfcsx(struct BCState *bcs)
- {
- long flags;
- struct IsdnCardState *cs = bcs->cs;
- int count = 5;
- struct sk_buff *skb;
- save_flags(flags);
-
- Begin:
- count--;
- cli();
- if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
- debugl1(cs, "rec_data %d blocked", bcs->channel);
- restore_flags(flags);
- return;
- }
- sti();
- 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) {
- cli();
- skb_queue_tail(&bcs->rqueue, skb);
- sti();
- hfcsx_sched_event(bcs, B_RCVBUFREADY);
- }
- test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
- if (count && skb)
- goto Begin;
- restore_flags(flags);
- 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;
- unsigned long flags;
- if (!bcs->tx_skb)
- return;
- if (bcs->tx_skb->len <= 0)
- return;
- save_flags(flags);
- sti();
- 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 (bcs->st->lli.l1writewakeup &&
- (PACKET_NOACK != bcs->tx_skb->pkt_type))
- bcs->st->lli.l1writewakeup(bcs->st, bcs->tx_skb->len);
- dev_kfree_skb_any(bcs->tx_skb);
- bcs->tx_skb = NULL;
- test_and_clear_bit(BC_FLG_BUSY, &bcs->Flag);
- }
- cli();
- restore_flags(flags);
- return;
- }
- /**********************************************/
- /* 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)))) {
- save_flags(flags);
- cli();
- 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;
- cs->stlist->l2.l2l1 = dch_nt_l2l1;
- restore_flags(flags);
- 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);
- save_flags(flags);
- cli();
- 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;
- 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);
- restore_flags(flags);
- return (0);
- } /* hfcsx_auxcmd */
- /*****************************/
- /* E-channel receive routine */
- /*****************************/
- static void
- receive_emsg(struct IsdnCardState *cs)
- {
- unsigned long flags;
- int count = 5;
- u_char *ptr;
- struct sk_buff *skb;
- save_flags(flags);
- cli();
- if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
- debugl1(cs, "echo_rec_data blocked");
- restore_flags(flags);
- return;
- }
- sti();
- 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);
- restore_flags(flags);
- return;
- } /* receive_emsg */
- /*********************/
- /* Interrupt handler */
- /*********************/
- static void
- hfcsx_interrupt(int intno, void *dev_id, struct pt_regs *regs)
- {
- struct IsdnCardState *cs = dev_id;
- u_char exval;
- struct BCState *bcs;
- int count = 15;
- long flags;
- u_char val, stat;
- if (!cs) {
- printk(KERN_WARNING "HFC-SX: Spurious interrupt!n");
- return;
- }
- if (!(cs->hw.hfcsx.int_m2 & 0x08))
- return; /* not initialised */
- 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
- return;
- 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;
- sched_event_D_sx(cs, D_L1STATECHANGE);
- val &= ~0x40;
- }
- if (val & 0x80) { /* timer irq */
- if (cs->hw.hfcsx.nt_mode) {
- if ((--cs->hw.hfcsx.nt_timer) < 0)
- sched_event_D_sx(cs, D_L1STATECHANGE);
- }
- val &= ~0x80;
- Write_hfc(cs, HFCSX_CTMT, cs->hw.hfcsx.ctmt | HFCSX_CLTIMER);
- }
- while (val) {
- save_flags(flags);
- cli();
- if (test_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
- cs->hw.hfcsx.int_s1 |= val;
- restore_flags(flags);
- return;
- }
- 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 {
- hfcsx_sched_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 {
- hfcsx_sched_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))
- sched_event_D_sx(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
- sched_event_D_sx(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;
- restore_flags(flags);
- }
- }
- /********************************************************************/
- /* timer callback for D-chan busy resolution. Currently no function */
- /********************************************************************/
- static void
- hfcsx_dbusy_timer(struct IsdnCardState *cs)
- {
- }
- /*************************************/
- /* 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;
- unsigned 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);
- 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");
- }
- break;
- case (PH_PULL | INDICATION):
- 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);
- 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");
- 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):
- 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);
- l1_msg(cs, HW_POWERUP | CONFIRM, NULL);
- break;
- case (HW_ENABLE | REQUEST):
- Write_hfc(cs, HFCSX_STATES, HFCSX_ACTIVATE | HFCSX_DO_ACTION);
- break;
- case (HW_DEACTIVATE | REQUEST):
- cs->hw.hfcsx.mst_m &= ~HFCSX_MASTER;
- Write_hfc(cs, HFCSX_MST_MODE, cs->hw.hfcsx.mst_m);
- break;
- case (HW_INFO3 | REQUEST):
- cs->hw.hfcsx.mst_m |= HFCSX_MASTER;
- Write_hfc(cs, HFCSX_MST_MODE, cs->hw.hfcsx.mst_m);
- break;
- case (HW_TESTLOOP | REQUEST):
- switch ((int) arg) {
- case (1):
- Write_hfc(cs, HFCSX_B1_SSL, 0x80); /* tx slot */
- Write_hfc(cs, HFCSX_B1_RSL, 0x80); /* rx slot */
- save_flags(flags);
- cli();
- cs->hw.hfcsx.conn = (cs->hw.hfcsx.conn & ~7) | 1;
- Write_hfc(cs, HFCSX_CONNECT, cs->hw.hfcsx.conn);
- restore_flags(flags);
- break;
- case (2):
- Write_hfc(cs, HFCSX_B2_SSL, 0x81); /* tx slot */
- Write_hfc(cs, HFCSX_B2_RSL, 0x81); /* rx slot */
- save_flags(flags);
- cli();
- cs->hw.hfcsx.conn = (cs->hw.hfcsx.conn & ~0x38) | 0x08;
- Write_hfc(cs, HFCSX_CONNECT, cs->hw.hfcsx.conn);
- restore_flags(flags);
- break;
- default:
- if (cs->debug & L1_DEB_WARN)
- debugl1(cs, "hfcsx_l1hw loop invalid %4x", (int) arg);
- return;
- }
- save_flags(flags);
- cli();
- cs->hw.hfcsx.trm |= 0x80; /* enable IOM-loop */
- Write_hfc(cs, HFCSX_TRM, cs->hw.hfcsx.trm);
- restore_flags(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 */
- /***********************************************/
- 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 */
- /***************************************************************/
- void
- mode_hfcsx(struct BCState *bcs, int mode, int bc)
- {
- struct IsdnCardState *cs = bcs->cs;
- unsigned long flags;
- 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;
- save_flags(flags);
- cli();
- 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);
- }
- restore_flags(flags);
- }
- /******************************/
- /* Layer2 -> Layer 1 Transfer */
- /******************************/
- static void
- hfcsx_l2l1(struct PStack *st, int pr, void *arg)
- {
- struct sk_buff *skb = arg;
- long flags;
- switch (pr) {
- case (PH_DATA | REQUEST):
- save_flags(flags);
- cli();
- if (st->l1.bcs->tx_skb) {
- skb_queue_tail(&st->l1.bcs->squeue, skb);
- restore_flags(flags);
- } else {
- st->l1.bcs->tx_skb = skb;
- /* test_and_set_bit(BC_FLG_BUSY, &st->l1.bcs->Flag);
- */ st->l1.bcs->cs->BC_Send_Data(st->l1.bcs);
- restore_flags(flags);
- }
- break;
- case (PH_PULL | INDICATION):
- if (st->l1.bcs->tx_skb) {
- printk(KERN_WARNING "hfc_l2l1: this shouldn't happenn");
- break;
- }
- save_flags(flags);
- cli();
- /* test_and_set_bit(BC_FLG_BUSY, &st->l1.bcs->Flag);
- */ st->l1.bcs->tx_skb = skb;
- st->l1.bcs->cs->BC_Send_Data(st->l1.bcs);
- restore_flags(flags);
- break;
- case (PH_PULL | REQUEST):
- if (!st->l1.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):
- test_and_set_bit(BC_FLG_ACTIV, &st->l1.bcs->Flag);
- mode_hfcsx(st->l1.bcs, st->l1.mode, st->l1.bc);
- l1_msg_b(st, pr, arg);
- break;
- case (PH_DEACTIVATE | REQUEST):
- l1_msg_b(st, pr, arg);
- break;
- case (PH_DEACTIVATE | CONFIRM):
- test_and_clear_bit(BC_FLG_ACTIV, &st->l1.bcs->Flag);
- test_and_clear_bit(BC_FLG_BUSY, &st->l1.bcs->Flag);
- mode_hfcsx(st->l1.bcs, 0, st->l1.bc);
- 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 IsdnCardState *cs)
- {
- unsigned long flags;
- /* struct PStack *stptr;
- */
- if (!cs)
- return;
- 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):
- save_flags(flags);
- cli();
- 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 */
- }
- restore_flags(flags);
- break;
- case (1):
- case (3):
- case (4):
- save_flags(flags);
- cli();
- 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);
- restore_flags(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 */
- /********************************/
- void __devinit
- inithfcsx(struct IsdnCardState *cs)
- {
- cs->setstack_d = setstack_hfcsx;
- cs->dbusytimer.function = (void *) hfcsx_dbusy_timer;
- cs->dbusytimer.data = (long) cs;
- init_timer(&cs->dbusytimer);
- cs->tqueue.routine = (void *) (void *) hfcsx_bh;
- 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)
- {
- long flags;
- if (cs->debug & L1_DEB_ISAC)
- debugl1(cs, "HFCSX: card_msg %x", mt);
- switch (mt) {
- case CARD_RESET:
- reset_hfcsx(cs);
- return (0);
- case CARD_RELEASE:
- release_io_hfcsx(cs);
- return (0);
- case CARD_INIT:
- inithfcsx(cs);
- save_flags(flags);
- sti();
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout((80 * HZ) / 1000); /* Timeout 80ms */
- /* now switch timer interrupt off */
- 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);
- restore_flags(flags);
- return (0);
- case CARD_TEST:
- return (0);
- }
- return (0);
- }
- #ifdef __ISAPNP__
- static struct isapnp_device_id hfc_ids[] __initdata = {
- { 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 *hdev = &hfc_ids[0];
- static struct pci_bus *pnp_c __devinitdata = NULL;
- #endif
- int __devinit
- setup_hfcsx(struct IsdnCard *card)
- {
- struct IsdnCardState *cs = card->cs;
- char tmp[64];
- unsigned long flags;
- strcpy(tmp, hfcsx_revision);
- printk(KERN_INFO "HiSax: HFC-SX driver Rev. %sn", HiSax_getrev(tmp));
- #ifdef __ISAPNP__
- if (!card->para[1] && isapnp_present()) {
- struct pci_bus *pb;
- struct pci_dev *pd;
- while(hdev->card_vendor) {
- if ((pb = isapnp_find_card(hdev->card_vendor,
- hdev->card_device, pnp_c))) {
- pnp_c = pb;
- pd = NULL;
- if ((pd = isapnp_find_dev(pnp_c,
- hdev->vendor, hdev->function, pd))) {
- printk(KERN_INFO "HiSax: %s detectedn",
- (char *)hdev->driver_data);
- pd->prepare(pd);
- pd->deactivate(pd);
- pd->activate(pd);
- card->para[1] = pd->resource[0].start;
- card->para[0] = pd->irq_resource[0].start;
- if (!card->para[0] || !card->para[1]) {
- printk(KERN_ERR "HFC PnP:some resources are missing %ld/%lxn",
- card->para[0], card->para[1]);
- pd->deactivate(pd);
- return(0);
- }
- break;
- } else {
- printk(KERN_ERR "HFC PnP: PnP error card found, no devicen");
- }
- }
- hdev++;
- pnp_c=NULL;
- }
- if (!hdev->card_vendor) {
- printk(KERN_INFO "HFC PnP: no ISAPnP card foundn");
- 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) ||
- check_region((cs->hw.hfcsx.base), 2)) {
- printk(KERN_WARNING
- "HiSax: HFC-SX io-base %#lx already in usen",
- cs->hw.hfcsx.base);
- return(0);
- } else {
- request_region(cs->hw.hfcsx.base, 2, "HFCSX isdn");
- }
- 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%xn",
- 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 specifiedn",cs->irq & 0xF);
- release_region(cs->hw.hfcsx.base, 2);
- return(0);
- }
- save_flags(flags);
- cli();
- if (!(cs->hw.hfcsx.extra = (void *)
- kmalloc(sizeof(struct hfcsx_extra), GFP_ATOMIC))) {
- restore_flags(flags);
- release_region(cs->hw.hfcsx.base, 2);
- printk(KERN_WARNING "HFC-SX: unable to allocate memoryn");
- return(0);
- }
- restore_flags(flags);
- printk(KERN_INFO
- "HFC-S%c chip detected at base 0x%x IRQ %d HZ %dn",
- 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 */
- 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.timer.function = (void *) hfcsx_Timer;
- cs->hw.hfcsx.timer.data = (long) cs;
- cs->hw.hfcsx.b_fifo_size = 0; /* fifo size still unknown */
- cs->hw.hfcsx.cirm = ccd_sp_irqtab[cs->irq & 0xF]; /* RAM not evaluated */
- init_timer(&cs->hw.hfcsx.timer);
- reset_hfcsx(cs);
- cs->cardmsg = &hfcsx_card_msg;
- cs->auxcmd = &hfcsx_auxcmd;
- return (1);
- }