summaryrefslogtreecommitdiffstats
path: root/drivers/isdn/hisax/hisax_isac.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/isdn/hisax/hisax_isac.c')
-rw-r--r--drivers/isdn/hisax/hisax_isac.c895
1 files changed, 0 insertions, 895 deletions
diff --git a/drivers/isdn/hisax/hisax_isac.c b/drivers/isdn/hisax/hisax_isac.c
deleted file mode 100644
index 0f36375478c5..000000000000
--- a/drivers/isdn/hisax/hisax_isac.c
+++ /dev/null
@@ -1,895 +0,0 @@
-/*
- * Driver for ISAC-S and ISAC-SX
- * ISDN Subscriber Access Controller for Terminals
- *
- * Author Kai Germaschewski
- * Copyright 2001 by Kai Germaschewski <kai.germaschewski@gmx.de>
- * 2001 by Karsten Keil <keil@isdn4linux.de>
- *
- * based upon Karsten Keil's original isac.c driver
- *
- * This software may be used and distributed according to the terms
- * of the GNU General Public License, incorporated herein by reference.
- *
- * Thanks to Wizard Computersysteme GmbH, Bremervoerde and
- * SoHaNet Technology GmbH, Berlin
- * for supporting the development of this driver
- */
-
-/* TODO:
- * specifically handle level vs edge triggered?
- */
-
-#include <linux/module.h>
-#include <linux/gfp.h>
-#include <linux/init.h>
-#include <linux/netdevice.h>
-#include "hisax_isac.h"
-
-// debugging cruft
-
-#define __debug_variable debug
-#include "hisax_debug.h"
-
-#ifdef CONFIG_HISAX_DEBUG
-static int debug = 1;
-module_param(debug, int, 0);
-
-static char *ISACVer[] = {
- "2086/2186 V1.1",
- "2085 B1",
- "2085 B2",
- "2085 V2.3"
-};
-#endif
-
-MODULE_AUTHOR("Kai Germaschewski <kai.germaschewski@gmx.de>/Karsten Keil <kkeil@suse.de>");
-MODULE_DESCRIPTION("ISAC/ISAC-SX driver");
-MODULE_LICENSE("GPL");
-
-#define DBG_WARN 0x0001
-#define DBG_IRQ 0x0002
-#define DBG_L1M 0x0004
-#define DBG_PR 0x0008
-#define DBG_RFIFO 0x0100
-#define DBG_RPACKET 0x0200
-#define DBG_XFIFO 0x1000
-#define DBG_XPACKET 0x2000
-
-// we need to distinguish ISAC-S and ISAC-SX
-#define TYPE_ISAC 0x00
-#define TYPE_ISACSX 0x01
-
-// registers etc.
-#define ISAC_MASK 0x20
-#define ISAC_ISTA 0x20
-#define ISAC_ISTA_EXI 0x01
-#define ISAC_ISTA_SIN 0x02
-#define ISAC_ISTA_CISQ 0x04
-#define ISAC_ISTA_XPR 0x10
-#define ISAC_ISTA_RSC 0x20
-#define ISAC_ISTA_RPF 0x40
-#define ISAC_ISTA_RME 0x80
-
-#define ISAC_STAR 0x21
-#define ISAC_CMDR 0x21
-#define ISAC_CMDR_XRES 0x01
-#define ISAC_CMDR_XME 0x02
-#define ISAC_CMDR_XTF 0x08
-#define ISAC_CMDR_RRES 0x40
-#define ISAC_CMDR_RMC 0x80
-
-#define ISAC_EXIR 0x24
-#define ISAC_EXIR_MOS 0x04
-#define ISAC_EXIR_XDU 0x40
-#define ISAC_EXIR_XMR 0x80
-
-#define ISAC_ADF2 0x39
-#define ISAC_SPCR 0x30
-#define ISAC_ADF1 0x38
-
-#define ISAC_CIR0 0x31
-#define ISAC_CIX0 0x31
-#define ISAC_CIR0_CIC0 0x02
-#define ISAC_CIR0_CIC1 0x01
-
-#define ISAC_CIR1 0x33
-#define ISAC_CIX1 0x33
-#define ISAC_STCR 0x37
-#define ISAC_MODE 0x22
-
-#define ISAC_RSTA 0x27
-#define ISAC_RSTA_RDO 0x40
-#define ISAC_RSTA_CRC 0x20
-#define ISAC_RSTA_RAB 0x10
-
-#define ISAC_RBCL 0x25
-#define ISAC_RBCH 0x2A
-#define ISAC_TIMR 0x23
-#define ISAC_SQXR 0x3b
-#define ISAC_MOSR 0x3a
-#define ISAC_MOCR 0x3a
-#define ISAC_MOR0 0x32
-#define ISAC_MOX0 0x32
-#define ISAC_MOR1 0x34
-#define ISAC_MOX1 0x34
-
-#define ISAC_RBCH_XAC 0x80
-
-#define ISAC_CMD_TIM 0x0
-#define ISAC_CMD_RES 0x1
-#define ISAC_CMD_SSP 0x2
-#define ISAC_CMD_SCP 0x3
-#define ISAC_CMD_AR8 0x8
-#define ISAC_CMD_AR10 0x9
-#define ISAC_CMD_ARL 0xa
-#define ISAC_CMD_DI 0xf
-
-#define ISACSX_MASK 0x60
-#define ISACSX_ISTA 0x60
-#define ISACSX_ISTA_ICD 0x01
-#define ISACSX_ISTA_CIC 0x10
-
-#define ISACSX_MASKD 0x20
-#define ISACSX_ISTAD 0x20
-#define ISACSX_ISTAD_XDU 0x04
-#define ISACSX_ISTAD_XMR 0x08
-#define ISACSX_ISTAD_XPR 0x10
-#define ISACSX_ISTAD_RFO 0x20
-#define ISACSX_ISTAD_RPF 0x40
-#define ISACSX_ISTAD_RME 0x80
-
-#define ISACSX_CMDRD 0x21
-#define ISACSX_CMDRD_XRES 0x01
-#define ISACSX_CMDRD_XME 0x02
-#define ISACSX_CMDRD_XTF 0x08
-#define ISACSX_CMDRD_RRES 0x40
-#define ISACSX_CMDRD_RMC 0x80
-
-#define ISACSX_MODED 0x22
-
-#define ISACSX_RBCLD 0x26
-
-#define ISACSX_RSTAD 0x28
-#define ISACSX_RSTAD_RAB 0x10
-#define ISACSX_RSTAD_CRC 0x20
-#define ISACSX_RSTAD_RDO 0x40
-#define ISACSX_RSTAD_VFR 0x80
-
-#define ISACSX_CIR0 0x2e
-#define ISACSX_CIR0_CIC0 0x08
-#define ISACSX_CIX0 0x2e
-
-#define ISACSX_TR_CONF0 0x30
-
-#define ISACSX_TR_CONF2 0x32
-
-static struct Fsm l1fsm;
-
-enum {
- ST_L1_RESET,
- ST_L1_F3_PDOWN,
- ST_L1_F3_PUP,
- ST_L1_F3_PEND_DEACT,
- ST_L1_F4,
- ST_L1_F5,
- ST_L1_F6,
- ST_L1_F7,
- ST_L1_F8,
-};
-
-#define L1_STATE_COUNT (ST_L1_F8 + 1)
-
-static char *strL1State[] =
-{
- "ST_L1_RESET",
- "ST_L1_F3_PDOWN",
- "ST_L1_F3_PUP",
- "ST_L1_F3_PEND_DEACT",
- "ST_L1_F4",
- "ST_L1_F5",
- "ST_L1_F6",
- "ST_L1_F7",
- "ST_L1_F8",
-};
-
-enum {
- EV_PH_DR, // 0000
- EV_PH_RES, // 0001
- EV_PH_TMA, // 0010
- EV_PH_SLD, // 0011
- EV_PH_RSY, // 0100
- EV_PH_DR6, // 0101
- EV_PH_EI, // 0110
- EV_PH_PU, // 0111
- EV_PH_AR, // 1000
- EV_PH_9, // 1001
- EV_PH_ARL, // 1010
- EV_PH_CVR, // 1011
- EV_PH_AI8, // 1100
- EV_PH_AI10, // 1101
- EV_PH_AIL, // 1110
- EV_PH_DC, // 1111
- EV_PH_ACTIVATE_REQ,
- EV_PH_DEACTIVATE_REQ,
- EV_TIMER3,
-};
-
-#define L1_EVENT_COUNT (EV_TIMER3 + 1)
-
-static char *strL1Event[] =
-{
- "EV_PH_DR", // 0000
- "EV_PH_RES", // 0001
- "EV_PH_TMA", // 0010
- "EV_PH_SLD", // 0011
- "EV_PH_RSY", // 0100
- "EV_PH_DR6", // 0101
- "EV_PH_EI", // 0110
- "EV_PH_PU", // 0111
- "EV_PH_AR", // 1000
- "EV_PH_9", // 1001
- "EV_PH_ARL", // 1010
- "EV_PH_CVR", // 1011
- "EV_PH_AI8", // 1100
- "EV_PH_AI10", // 1101
- "EV_PH_AIL", // 1110
- "EV_PH_DC", // 1111
- "EV_PH_ACTIVATE_REQ",
- "EV_PH_DEACTIVATE_REQ",
- "EV_TIMER3",
-};
-
-static inline void D_L1L2(struct isac *isac, int pr, void *arg)
-{
- struct hisax_if *ifc = (struct hisax_if *) &isac->hisax_d_if;
-
- DBG(DBG_PR, "pr %#x", pr);
- ifc->l1l2(ifc, pr, arg);
-}
-
-static void ph_command(struct isac *isac, unsigned int command)
-{
- DBG(DBG_L1M, "ph_command %#x", command);
- switch (isac->type) {
- case TYPE_ISAC:
- isac->write_isac(isac, ISAC_CIX0, (command << 2) | 3);
- break;
- case TYPE_ISACSX:
- isac->write_isac(isac, ISACSX_CIX0, (command << 4) | (7 << 1));
- break;
- }
-}
-
-// ----------------------------------------------------------------------
-
-static void l1_di(struct FsmInst *fi, int event, void *arg)
-{
- struct isac *isac = fi->userdata;
-
- FsmChangeState(fi, ST_L1_RESET);
- ph_command(isac, ISAC_CMD_DI);
-}
-
-static void l1_di_deact_ind(struct FsmInst *fi, int event, void *arg)
-{
- struct isac *isac = fi->userdata;
-
- FsmChangeState(fi, ST_L1_RESET);
- D_L1L2(isac, PH_DEACTIVATE | INDICATION, NULL);
- ph_command(isac, ISAC_CMD_DI);
-}
-
-static void l1_go_f3pdown(struct FsmInst *fi, int event, void *arg)
-{
- FsmChangeState(fi, ST_L1_F3_PDOWN);
-}
-
-static void l1_go_f3pend_deact_ind(struct FsmInst *fi, int event, void *arg)
-{
- struct isac *isac = fi->userdata;
-
- FsmChangeState(fi, ST_L1_F3_PEND_DEACT);
- D_L1L2(isac, PH_DEACTIVATE | INDICATION, NULL);
- ph_command(isac, ISAC_CMD_DI);
-}
-
-static void l1_go_f3pend(struct FsmInst *fi, int event, void *arg)
-{
- struct isac *isac = fi->userdata;
-
- FsmChangeState(fi, ST_L1_F3_PEND_DEACT);
- ph_command(isac, ISAC_CMD_DI);
-}
-
-static void l1_go_f4(struct FsmInst *fi, int event, void *arg)
-{
- FsmChangeState(fi, ST_L1_F4);
-}
-
-static void l1_go_f5(struct FsmInst *fi, int event, void *arg)
-{
- FsmChangeState(fi, ST_L1_F5);
-}
-
-static void l1_go_f6(struct FsmInst *fi, int event, void *arg)
-{
- FsmChangeState(fi, ST_L1_F6);
-}
-
-static void l1_go_f6_deact_ind(struct FsmInst *fi, int event, void *arg)
-{
- struct isac *isac = fi->userdata;
-
- FsmChangeState(fi, ST_L1_F6);
- D_L1L2(isac, PH_DEACTIVATE | INDICATION, NULL);
-}
-
-static void l1_go_f7_act_ind(struct FsmInst *fi, int event, void *arg)
-{
- struct isac *isac = fi->userdata;
-
- FsmDelTimer(&isac->timer, 0);
- FsmChangeState(fi, ST_L1_F7);
- ph_command(isac, ISAC_CMD_AR8);
- D_L1L2(isac, PH_ACTIVATE | INDICATION, NULL);
-}
-
-static void l1_go_f8(struct FsmInst *fi, int event, void *arg)
-{
- FsmChangeState(fi, ST_L1_F8);
-}
-
-static void l1_go_f8_deact_ind(struct FsmInst *fi, int event, void *arg)
-{
- struct isac *isac = fi->userdata;
-
- FsmChangeState(fi, ST_L1_F8);
- D_L1L2(isac, PH_DEACTIVATE | INDICATION, NULL);
-}
-
-static void l1_ar8(struct FsmInst *fi, int event, void *arg)
-{
- struct isac *isac = fi->userdata;
-
- FsmRestartTimer(&isac->timer, TIMER3_VALUE, EV_TIMER3, NULL, 2);
- ph_command(isac, ISAC_CMD_AR8);
-}
-
-static void l1_timer3(struct FsmInst *fi, int event, void *arg)
-{
- struct isac *isac = fi->userdata;
-
- ph_command(isac, ISAC_CMD_DI);
- D_L1L2(isac, PH_DEACTIVATE | INDICATION, NULL);
-}
-
-// state machines according to data sheet PSB 2186 / 3186
-
-static struct FsmNode L1FnList[] __initdata =
-{
- {ST_L1_RESET, EV_PH_RES, l1_di},
- {ST_L1_RESET, EV_PH_EI, l1_di},
- {ST_L1_RESET, EV_PH_DC, l1_go_f3pdown},
- {ST_L1_RESET, EV_PH_AR, l1_go_f6},
- {ST_L1_RESET, EV_PH_AI8, l1_go_f7_act_ind},
-
- {ST_L1_F3_PDOWN, EV_PH_RES, l1_di},
- {ST_L1_F3_PDOWN, EV_PH_EI, l1_di},
- {ST_L1_F3_PDOWN, EV_PH_AR, l1_go_f6},
- {ST_L1_F3_PDOWN, EV_PH_RSY, l1_go_f5},
- {ST_L1_F3_PDOWN, EV_PH_PU, l1_go_f4},
- {ST_L1_F3_PDOWN, EV_PH_AI8, l1_go_f7_act_ind},
- {ST_L1_F3_PDOWN, EV_PH_ACTIVATE_REQ, l1_ar8},
- {ST_L1_F3_PDOWN, EV_TIMER3, l1_timer3},
-
- {ST_L1_F3_PEND_DEACT, EV_PH_RES, l1_di},
- {ST_L1_F3_PEND_DEACT, EV_PH_EI, l1_di},
- {ST_L1_F3_PEND_DEACT, EV_PH_DC, l1_go_f3pdown},
- {ST_L1_F3_PEND_DEACT, EV_PH_RSY, l1_go_f5},
- {ST_L1_F3_PEND_DEACT, EV_PH_AR, l1_go_f6},
- {ST_L1_F3_PEND_DEACT, EV_PH_AI8, l1_go_f7_act_ind},
-
- {ST_L1_F4, EV_PH_RES, l1_di},
- {ST_L1_F4, EV_PH_EI, l1_di},
- {ST_L1_F4, EV_PH_RSY, l1_go_f5},
- {ST_L1_F4, EV_PH_AI8, l1_go_f7_act_ind},
- {ST_L1_F4, EV_TIMER3, l1_timer3},
- {ST_L1_F4, EV_PH_DC, l1_go_f3pdown},
-
- {ST_L1_F5, EV_PH_RES, l1_di},
- {ST_L1_F5, EV_PH_EI, l1_di},
- {ST_L1_F5, EV_PH_AR, l1_go_f6},
- {ST_L1_F5, EV_PH_AI8, l1_go_f7_act_ind},
- {ST_L1_F5, EV_TIMER3, l1_timer3},
- {ST_L1_F5, EV_PH_DR, l1_go_f3pend},
- {ST_L1_F5, EV_PH_DC, l1_go_f3pdown},
-
- {ST_L1_F6, EV_PH_RES, l1_di},
- {ST_L1_F6, EV_PH_EI, l1_di},
- {ST_L1_F6, EV_PH_RSY, l1_go_f8},
- {ST_L1_F6, EV_PH_AI8, l1_go_f7_act_ind},
- {ST_L1_F6, EV_PH_DR6, l1_go_f3pend},
- {ST_L1_F6, EV_TIMER3, l1_timer3},
- {ST_L1_F6, EV_PH_DC, l1_go_f3pdown},
-
- {ST_L1_F7, EV_PH_RES, l1_di_deact_ind},
- {ST_L1_F7, EV_PH_EI, l1_di_deact_ind},
- {ST_L1_F7, EV_PH_AR, l1_go_f6_deact_ind},
- {ST_L1_F7, EV_PH_RSY, l1_go_f8_deact_ind},
- {ST_L1_F7, EV_PH_DR, l1_go_f3pend_deact_ind},
-
- {ST_L1_F8, EV_PH_RES, l1_di},
- {ST_L1_F8, EV_PH_EI, l1_di},
- {ST_L1_F8, EV_PH_AR, l1_go_f6},
- {ST_L1_F8, EV_PH_DR, l1_go_f3pend},
- {ST_L1_F8, EV_PH_AI8, l1_go_f7_act_ind},
- {ST_L1_F8, EV_TIMER3, l1_timer3},
- {ST_L1_F8, EV_PH_DC, l1_go_f3pdown},
-};
-
-static void l1m_debug(struct FsmInst *fi, char *fmt, ...)
-{
- va_list args;
- char buf[256];
-
- va_start(args, fmt);
- vsnprintf(buf, sizeof(buf), fmt, args);
- DBG(DBG_L1M, "%s", buf);
- va_end(args);
-}
-
-static void isac_version(struct isac *cs)
-{
- int val;
-
- val = cs->read_isac(cs, ISAC_RBCH);
- DBG(1, "ISAC version (%x): %s", val, ISACVer[(val >> 5) & 3]);
-}
-
-static void isac_empty_fifo(struct isac *isac, int count)
-{
- // this also works for isacsx, since
- // CMDR(D) register works the same
- u_char *ptr;
-
- DBG(DBG_IRQ, "count %d", count);
-
- if ((isac->rcvidx + count) >= MAX_DFRAME_LEN_L1) {
- DBG(DBG_WARN, "overrun %d", isac->rcvidx + count);
- isac->write_isac(isac, ISAC_CMDR, ISAC_CMDR_RMC);
- isac->rcvidx = 0;
- return;
- }
- ptr = isac->rcvbuf + isac->rcvidx;
- isac->rcvidx += count;
- isac->read_isac_fifo(isac, ptr, count);
- isac->write_isac(isac, ISAC_CMDR, ISAC_CMDR_RMC);
- DBG_PACKET(DBG_RFIFO, ptr, count);
-}
-
-static void isac_fill_fifo(struct isac *isac)
-{
- // this also works for isacsx, since
- // CMDR(D) register works the same
-
- int count;
- unsigned char cmd;
- u_char *ptr;
-
- BUG_ON(!isac->tx_skb);
-
- count = isac->tx_skb->len;
- BUG_ON(count <= 0);
-
- DBG(DBG_IRQ, "count %d", count);
-
- if (count > 0x20) {
- count = 0x20;
- cmd = ISAC_CMDR_XTF;
- } else {
- cmd = ISAC_CMDR_XTF | ISAC_CMDR_XME;
- }
-
- ptr = isac->tx_skb->data;
- skb_pull(isac->tx_skb, count);
- isac->tx_cnt += count;
- DBG_PACKET(DBG_XFIFO, ptr, count);
- isac->write_isac_fifo(isac, ptr, count);
- isac->write_isac(isac, ISAC_CMDR, cmd);
-}
-
-static void isac_retransmit(struct isac *isac)
-{
- if (!isac->tx_skb) {
- DBG(DBG_WARN, "no skb");
- return;
- }
- skb_push(isac->tx_skb, isac->tx_cnt);
- isac->tx_cnt = 0;
-}
-
-
-static inline void isac_cisq_interrupt(struct isac *isac)
-{
- unsigned char val;
-
- val = isac->read_isac(isac, ISAC_CIR0);
- DBG(DBG_IRQ, "CIR0 %#x", val);
- if (val & ISAC_CIR0_CIC0) {
- DBG(DBG_IRQ, "CODR0 %#x", (val >> 2) & 0xf);
- FsmEvent(&isac->l1m, (val >> 2) & 0xf, NULL);
- }
- if (val & ISAC_CIR0_CIC1) {
- val = isac->read_isac(isac, ISAC_CIR1);
- DBG(DBG_WARN, "ISAC CIR1 %#x", val);
- }
-}
-
-static inline void isac_rme_interrupt(struct isac *isac)
-{
- unsigned char val;
- int count;
- struct sk_buff *skb;
-
- val = isac->read_isac(isac, ISAC_RSTA);
- if ((val & (ISAC_RSTA_RDO | ISAC_RSTA_CRC | ISAC_RSTA_RAB))
- != ISAC_RSTA_CRC) {
- DBG(DBG_WARN, "RSTA %#x, dropped", val);
- isac->write_isac(isac, ISAC_CMDR, ISAC_CMDR_RMC);
- goto out;
- }
-
- count = isac->read_isac(isac, ISAC_RBCL) & 0x1f;
- DBG(DBG_IRQ, "RBCL %#x", count);
- if (count == 0)
- count = 0x20;
-
- isac_empty_fifo(isac, count);
- count = isac->rcvidx;
- if (count < 1) {
- DBG(DBG_WARN, "count %d < 1", count);
- goto out;
- }
-
- skb = alloc_skb(count, GFP_ATOMIC);
- if (!skb) {
- DBG(DBG_WARN, "no memory, dropping\n");
- goto out;
- }
- skb_put_data(skb, isac->rcvbuf, count);
- DBG_SKB(DBG_RPACKET, skb);
- D_L1L2(isac, PH_DATA | INDICATION, skb);
-out:
- isac->rcvidx = 0;
-}
-
-static inline void isac_xpr_interrupt(struct isac *isac)
-{
- if (!isac->tx_skb)
- return;
-
- if (isac->tx_skb->len > 0) {
- isac_fill_fifo(isac);
- return;
- }
- dev_kfree_skb_irq(isac->tx_skb);
- isac->tx_cnt = 0;
- isac->tx_skb = NULL;
- D_L1L2(isac, PH_DATA | CONFIRM, NULL);
-}
-
-static inline void isac_exi_interrupt(struct isac *isac)
-{
- unsigned char val;
-
- val = isac->read_isac(isac, ISAC_EXIR);
- DBG(2, "EXIR %#x", val);
-
- if (val & ISAC_EXIR_XMR) {
- DBG(DBG_WARN, "ISAC XMR");
- isac_retransmit(isac);
- }
- if (val & ISAC_EXIR_XDU) {
- DBG(DBG_WARN, "ISAC XDU");
- isac_retransmit(isac);
- }
- if (val & ISAC_EXIR_MOS) { /* MOS */
- DBG(DBG_WARN, "MOS");
- val = isac->read_isac(isac, ISAC_MOSR);
- DBG(2, "ISAC MOSR %#x", val);
- }
-}
-
-void isac_irq(struct isac *isac)
-{
- unsigned char val;
-
- val = isac->read_isac(isac, ISAC_ISTA);
- DBG(DBG_IRQ, "ISTA %#x", val);
-
- if (val & ISAC_ISTA_EXI) {
- DBG(DBG_IRQ, "EXI");
- isac_exi_interrupt(isac);
- }
- if (val & ISAC_ISTA_XPR) {
- DBG(DBG_IRQ, "XPR");
- isac_xpr_interrupt(isac);
- }
- if (val & ISAC_ISTA_RME) {
- DBG(DBG_IRQ, "RME");
- isac_rme_interrupt(isac);
- }
- if (val & ISAC_ISTA_RPF) {
- DBG(DBG_IRQ, "RPF");
- isac_empty_fifo(isac, 0x20);
- }
- if (val & ISAC_ISTA_CISQ) {
- DBG(DBG_IRQ, "CISQ");
- isac_cisq_interrupt(isac);
- }
- if (val & ISAC_ISTA_RSC) {
- DBG(DBG_WARN, "RSC");
- }
- if (val & ISAC_ISTA_SIN) {
- DBG(DBG_WARN, "SIN");
- }
- isac->write_isac(isac, ISAC_MASK, 0xff);
- isac->write_isac(isac, ISAC_MASK, 0x00);
-}
-
-// ======================================================================
-
-static inline void isacsx_cic_interrupt(struct isac *isac)
-{
- unsigned char val;
-
- val = isac->read_isac(isac, ISACSX_CIR0);
- DBG(DBG_IRQ, "CIR0 %#x", val);
- if (val & ISACSX_CIR0_CIC0) {
- DBG(DBG_IRQ, "CODR0 %#x", val >> 4);
- FsmEvent(&isac->l1m, val >> 4, NULL);
- }
-}
-
-static inline void isacsx_rme_interrupt(struct isac *isac)
-{
- int count;
- struct sk_buff *skb;
- unsigned char val;
-
- val = isac->read_isac(isac, ISACSX_RSTAD);
- if ((val & (ISACSX_RSTAD_VFR |
- ISACSX_RSTAD_RDO |
- ISACSX_RSTAD_CRC |
- ISACSX_RSTAD_RAB))
- != (ISACSX_RSTAD_VFR | ISACSX_RSTAD_CRC)) {
- DBG(DBG_WARN, "RSTAD %#x, dropped", val);
- isac->write_isac(isac, ISACSX_CMDRD, ISACSX_CMDRD_RMC);
- goto out;
- }
-
- count = isac->read_isac(isac, ISACSX_RBCLD) & 0x1f;
- DBG(DBG_IRQ, "RBCLD %#x", count);
- if (count == 0)
- count = 0x20;
-
- isac_empty_fifo(isac, count);
- // strip trailing status byte
- count = isac->rcvidx - 1;
- if (count < 1) {
- DBG(DBG_WARN, "count %d < 1", count);
- goto out;
- }
-
- skb = dev_alloc_skb(count);
- if (!skb) {
- DBG(DBG_WARN, "no memory, dropping");
- goto out;
- }
- skb_put_data(skb, isac->rcvbuf, count);
- DBG_SKB(DBG_RPACKET, skb);
- D_L1L2(isac, PH_DATA | INDICATION, skb);
-out:
- isac->rcvidx = 0;
-}
-
-static inline void isacsx_xpr_interrupt(struct isac *isac)
-{
- if (!isac->tx_skb)
- return;
-
- if (isac->tx_skb->len > 0) {
- isac_fill_fifo(isac);
- return;
- }
- dev_kfree_skb_irq(isac->tx_skb);
- isac->tx_skb = NULL;
- isac->tx_cnt = 0;
- D_L1L2(isac, PH_DATA | CONFIRM, NULL);
-}
-
-static inline void isacsx_icd_interrupt(struct isac *isac)
-{
- unsigned char val;
-
- val = isac->read_isac(isac, ISACSX_ISTAD);
- DBG(DBG_IRQ, "ISTAD %#x", val);
- if (val & ISACSX_ISTAD_XDU) {
- DBG(DBG_WARN, "ISTAD XDU");
- isac_retransmit(isac);
- }
- if (val & ISACSX_ISTAD_XMR) {
- DBG(DBG_WARN, "ISTAD XMR");
- isac_retransmit(isac);
- }
- if (val & ISACSX_ISTAD_XPR) {
- DBG(DBG_IRQ, "ISTAD XPR");
- isacsx_xpr_interrupt(isac);
- }
- if (val & ISACSX_ISTAD_RFO) {
- DBG(DBG_WARN, "ISTAD RFO");
- isac->write_isac(isac, ISACSX_CMDRD, ISACSX_CMDRD_RMC);
- }
- if (val & ISACSX_ISTAD_RME) {
- DBG(DBG_IRQ, "ISTAD RME");
- isacsx_rme_interrupt(isac);
- }
- if (val & ISACSX_ISTAD_RPF) {
- DBG(DBG_IRQ, "ISTAD RPF");
- isac_empty_fifo(isac, 0x20);
- }
-}
-
-void isacsx_irq(struct isac *isac)
-{
- unsigned char val;
-
- val = isac->read_isac(isac, ISACSX_ISTA);
- DBG(DBG_IRQ, "ISTA %#x", val);
-
- if (val & ISACSX_ISTA_ICD)
- isacsx_icd_interrupt(isac);
- if (val & ISACSX_ISTA_CIC)
- isacsx_cic_interrupt(isac);
-}
-
-void isac_init(struct isac *isac)
-{
- isac->tx_skb = NULL;
- isac->l1m.fsm = &l1fsm;
- isac->l1m.state = ST_L1_RESET;
-#ifdef CONFIG_HISAX_DEBUG
- isac->l1m.debug = 1;
-#else
- isac->l1m.debug = 0;
-#endif
- isac->l1m.userdata = isac;
- isac->l1m.printdebug = l1m_debug;
- FsmInitTimer(&isac->l1m, &isac->timer);
-}
-
-void isac_setup(struct isac *isac)
-{
- int val, eval;
-
- isac->type = TYPE_ISAC;
- isac_version(isac);
-
- ph_command(isac, ISAC_CMD_RES);
-
- isac->write_isac(isac, ISAC_MASK, 0xff);
- isac->mocr = 0xaa;
- if (test_bit(ISAC_IOM1, &isac->flags)) {
- /* IOM 1 Mode */
- isac->write_isac(isac, ISAC_ADF2, 0x0);
- isac->write_isac(isac, ISAC_SPCR, 0xa);
- isac->write_isac(isac, ISAC_ADF1, 0x2);
- isac->write_isac(isac, ISAC_STCR, 0x70);
- isac->write_isac(isac, ISAC_MODE, 0xc9);
- } else {
- /* IOM 2 Mode */
- if (!isac->adf2)
- isac->adf2 = 0x80;
- isac->write_isac(isac, ISAC_ADF2, isac->adf2);
- isac->write_isac(isac, ISAC_SQXR, 0x2f);
- isac->write_isac(isac, ISAC_SPCR, 0x00);
- isac->write_isac(isac, ISAC_STCR, 0x70);
- isac->write_isac(isac, ISAC_MODE, 0xc9);
- isac->write_isac(isac, ISAC_TIMR, 0x00);
- isac->write_isac(isac, ISAC_ADF1, 0x00);
- }
- val = isac->read_isac(isac, ISAC_STAR);
- DBG(2, "ISAC STAR %x", val);
- val = isac->read_isac(isac, ISAC_MODE);
- DBG(2, "ISAC MODE %x", val);
- val = isac->read_isac(isac, ISAC_ADF2);
- DBG(2, "ISAC ADF2 %x", val);
- val = isac->read_isac(isac, ISAC_ISTA);
- DBG(2, "ISAC ISTA %x", val);
- if (val & 0x01) {
- eval = isac->read_isac(isac, ISAC_EXIR);
- DBG(2, "ISAC EXIR %x", eval);
- }
- val = isac->read_isac(isac, ISAC_CIR0);
- DBG(2, "ISAC CIR0 %x", val);
- FsmEvent(&isac->l1m, (val >> 2) & 0xf, NULL);
-
- isac->write_isac(isac, ISAC_MASK, 0x0);
- // RESET Receiver and Transmitter
- isac->write_isac(isac, ISAC_CMDR, ISAC_CMDR_XRES | ISAC_CMDR_RRES);
-}
-
-void isacsx_setup(struct isac *isac)
-{
- isac->type = TYPE_ISACSX;
- // clear LDD
- isac->write_isac(isac, ISACSX_TR_CONF0, 0x00);
- // enable transmitter
- isac->write_isac(isac, ISACSX_TR_CONF2, 0x00);
- // transparent mode 0, RAC, stop/go
- isac->write_isac(isac, ISACSX_MODED, 0xc9);
- // all HDLC IRQ unmasked
- isac->write_isac(isac, ISACSX_MASKD, 0x03);
- // unmask ICD, CID IRQs
- isac->write_isac(isac, ISACSX_MASK,
- ~(ISACSX_ISTA_ICD | ISACSX_ISTA_CIC));
-}
-
-void isac_d_l2l1(struct hisax_if *hisax_d_if, int pr, void *arg)
-{
- struct isac *isac = hisax_d_if->priv;
- struct sk_buff *skb = arg;
-
- DBG(DBG_PR, "pr %#x", pr);
-
- switch (pr) {
- case PH_ACTIVATE | REQUEST:
- FsmEvent(&isac->l1m, EV_PH_ACTIVATE_REQ, NULL);
- break;
- case PH_DEACTIVATE | REQUEST:
- FsmEvent(&isac->l1m, EV_PH_DEACTIVATE_REQ, NULL);
- break;
- case PH_DATA | REQUEST:
- DBG(DBG_PR, "PH_DATA REQUEST len %d", skb->len);
- DBG_SKB(DBG_XPACKET, skb);
- if (isac->l1m.state != ST_L1_F7) {
- DBG(1, "L1 wrong state %d\n", isac->l1m.state);
- dev_kfree_skb(skb);
- break;
- }
- BUG_ON(isac->tx_skb);
-
- isac->tx_skb = skb;
- isac_fill_fifo(isac);
- break;
- }
-}
-
-static int __init hisax_isac_init(void)
-{
- printk(KERN_INFO "hisax_isac: ISAC-S/ISAC-SX ISDN driver v0.1.0\n");
-
- l1fsm.state_count = L1_STATE_COUNT;
- l1fsm.event_count = L1_EVENT_COUNT;
- l1fsm.strState = strL1State;
- l1fsm.strEvent = strL1Event;
- return FsmNew(&l1fsm, L1FnList, ARRAY_SIZE(L1FnList));
-}
-
-static void __exit hisax_isac_exit(void)
-{
- FsmFree(&l1fsm);
-}
-
-EXPORT_SYMBOL(isac_init);
-EXPORT_SYMBOL(isac_d_l2l1);
-
-EXPORT_SYMBOL(isacsx_setup);
-EXPORT_SYMBOL(isacsx_irq);
-
-EXPORT_SYMBOL(isac_setup);
-EXPORT_SYMBOL(isac_irq);
-
-module_init(hisax_isac_init);
-module_exit(hisax_isac_exit);