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tegrakernel/kernel/kernel-4.9/drivers/isdn/hardware/avm/c4.c

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initial commit tegra kernel 32.6.1
2022-02-16 09:13:02 -06:00
/* $Id: c4.c,v 1.1.2.2 2004/01/16 21:09:27 keil Exp $
*
* Module for AVM C4 & C2 card.
*
* Copyright 1999 by Carsten Paeth <calle@calle.de>
*
* This software may be used and distributed according to the terms
* of the GNU General Public License, incorporated herein by reference.
*
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/skbuff.h>
#include <linux/delay.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <linux/pci.h>
#include <linux/capi.h>
#include <linux/kernelcapi.h>
#include <linux/init.h>
#include <linux/gfp.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <linux/netdevice.h>
#include <linux/isdn/capicmd.h>
#include <linux/isdn/capiutil.h>
#include <linux/isdn/capilli.h>
#include "avmcard.h"
#undef AVM_C4_DEBUG
#undef AVM_C4_POLLDEBUG
/* ------------------------------------------------------------- */
static char *revision = "$Revision: 1.1.2.2 $";
/* ------------------------------------------------------------- */
static bool suppress_pollack;
static struct pci_device_id c4_pci_tbl[] = {
{ PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_21285, PCI_VENDOR_ID_AVM, PCI_DEVICE_ID_AVM_C4, 0, 0, (unsigned long)4 },
{ PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_21285, PCI_VENDOR_ID_AVM, PCI_DEVICE_ID_AVM_C2, 0, 0, (unsigned long)2 },
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE(pci, c4_pci_tbl);
MODULE_DESCRIPTION("CAPI4Linux: Driver for AVM C2/C4 cards");
MODULE_AUTHOR("Carsten Paeth");
MODULE_LICENSE("GPL");
module_param(suppress_pollack, bool, 0);
/* ------------------------------------------------------------- */
static void c4_dispatch_tx(avmcard *card);
/* ------------------------------------------------------------- */
#define DC21285_DRAM_A0MR 0x40000000
#define DC21285_DRAM_A1MR 0x40004000
#define DC21285_DRAM_A2MR 0x40008000
#define DC21285_DRAM_A3MR 0x4000C000
#define CAS_OFFSET 0x88
#define DC21285_ARMCSR_BASE 0x42000000
#define PCI_OUT_INT_STATUS 0x30
#define PCI_OUT_INT_MASK 0x34
#define MAILBOX_0 0x50
#define MAILBOX_1 0x54
#define MAILBOX_2 0x58
#define MAILBOX_3 0x5C
#define DOORBELL 0x60
#define DOORBELL_SETUP 0x64
#define CHAN_1_CONTROL 0x90
#define CHAN_2_CONTROL 0xB0
#define DRAM_TIMING 0x10C
#define DRAM_ADDR_SIZE_0 0x110
#define DRAM_ADDR_SIZE_1 0x114
#define DRAM_ADDR_SIZE_2 0x118
#define DRAM_ADDR_SIZE_3 0x11C
#define SA_CONTROL 0x13C
#define XBUS_CYCLE 0x148
#define XBUS_STROBE 0x14C
#define DBELL_PCI_MASK 0x150
#define DBELL_SA_MASK 0x154
#define SDRAM_SIZE 0x1000000
/* ------------------------------------------------------------- */
#define MBOX_PEEK_POKE MAILBOX_0
#define DBELL_ADDR 0x01
#define DBELL_DATA 0x02
#define DBELL_RNWR 0x40
#define DBELL_INIT 0x80
/* ------------------------------------------------------------- */
#define MBOX_UP_ADDR MAILBOX_0
#define MBOX_UP_LEN MAILBOX_1
#define MBOX_DOWN_ADDR MAILBOX_2
#define MBOX_DOWN_LEN MAILBOX_3
#define DBELL_UP_HOST 0x00000100
#define DBELL_UP_ARM 0x00000200
#define DBELL_DOWN_HOST 0x00000400
#define DBELL_DOWN_ARM 0x00000800
#define DBELL_RESET_HOST 0x40000000
#define DBELL_RESET_ARM 0x80000000
/* ------------------------------------------------------------- */
#define DRAM_TIMING_DEF 0x001A01A5
#define DRAM_AD_SZ_DEF0 0x00000045
#define DRAM_AD_SZ_NULL 0x00000000
#define SA_CTL_ALLRIGHT 0x64AA0271
#define INIT_XBUS_CYCLE 0x100016DB
#define INIT_XBUS_STROBE 0xF1F1F1F1
/* ------------------------------------------------------------- */
#define RESET_TIMEOUT (15 * HZ) /* 15 sec */
#define PEEK_POKE_TIMEOUT (HZ / 10) /* 0.1 sec */
/* ------------------------------------------------------------- */
#define c4outmeml(addr, value) writel(value, addr)
#define c4inmeml(addr) readl(addr)
#define c4outmemw(addr, value) writew(value, addr)
#define c4inmemw(addr) readw(addr)
#define c4outmemb(addr, value) writeb(value, addr)
#define c4inmemb(addr) readb(addr)
/* ------------------------------------------------------------- */
static inline int wait_for_doorbell(avmcard *card, unsigned long t)
{
unsigned long stop;
stop = jiffies + t;
while (c4inmeml(card->mbase + DOORBELL) != 0xffffffff) {
if (!time_before(jiffies, stop))
return -1;
mb();
}
return 0;
}
static int c4_poke(avmcard *card, unsigned long off, unsigned long value)
{
if (wait_for_doorbell(card, HZ / 10) < 0)
return -1;
c4outmeml(card->mbase + MBOX_PEEK_POKE, off);
c4outmeml(card->mbase + DOORBELL, DBELL_ADDR);
if (wait_for_doorbell(card, HZ / 10) < 0)
return -1;
c4outmeml(card->mbase + MBOX_PEEK_POKE, value);
c4outmeml(card->mbase + DOORBELL, DBELL_DATA | DBELL_ADDR);
return 0;
}
static int c4_peek(avmcard *card, unsigned long off, unsigned long *valuep)
{
if (wait_for_doorbell(card, HZ / 10) < 0)
return -1;
c4outmeml(card->mbase + MBOX_PEEK_POKE, off);
c4outmeml(card->mbase + DOORBELL, DBELL_RNWR | DBELL_ADDR);
if (wait_for_doorbell(card, HZ / 10) < 0)
return -1;
*valuep = c4inmeml(card->mbase + MBOX_PEEK_POKE);
return 0;
}
/* ------------------------------------------------------------- */
static int c4_load_t4file(avmcard *card, capiloaddatapart *t4file)
{
u32 val;
unsigned char *dp;
u_int left;
u32 loadoff = 0;
dp = t4file->data;
left = t4file->len;
while (left >= sizeof(u32)) {
if (t4file->user) {
if (copy_from_user(&val, dp, sizeof(val)))
return -EFAULT;
} else {
memcpy(&val, dp, sizeof(val));
}
if (c4_poke(card, loadoff, val)) {
printk(KERN_ERR "%s: corrupted firmware file ?\n",
card->name);
return -EIO;
}
left -= sizeof(u32);
dp += sizeof(u32);
loadoff += sizeof(u32);
}
if (left) {
val = 0;
if (t4file->user) {
if (copy_from_user(&val, dp, left))
return -EFAULT;
} else {
memcpy(&val, dp, left);
}
if (c4_poke(card, loadoff, val)) {
printk(KERN_ERR "%s: corrupted firmware file ?\n",
card->name);
return -EIO;
}
}
return 0;
}
/* ------------------------------------------------------------- */
static inline void _put_byte(void **pp, u8 val)
{
u8 *s = *pp;
*s++ = val;
*pp = s;
}
static inline void _put_word(void **pp, u32 val)
{
u8 *s = *pp;
*s++ = val & 0xff;
*s++ = (val >> 8) & 0xff;
*s++ = (val >> 16) & 0xff;
*s++ = (val >> 24) & 0xff;
*pp = s;
}
static inline void _put_slice(void **pp, unsigned char *dp, unsigned int len)
{
unsigned i = len;
_put_word(pp, i);
while (i-- > 0)
_put_byte(pp, *dp++);
}
static inline u8 _get_byte(void **pp)
{
u8 *s = *pp;
u8 val;
val = *s++;
*pp = s;
return val;
}
static inline u32 _get_word(void **pp)
{
u8 *s = *pp;
u32 val;
val = *s++;
val |= (*s++ << 8);
val |= (*s++ << 16);
val |= (*s++ << 24);
*pp = s;
return val;
}
static inline u32 _get_slice(void **pp, unsigned char *dp)
{
unsigned int len, i;
len = i = _get_word(pp);
while (i-- > 0) *dp++ = _get_byte(pp);
return len;
}
/* ------------------------------------------------------------- */
static void c4_reset(avmcard *card)
{
unsigned long stop;
c4outmeml(card->mbase + DOORBELL, DBELL_RESET_ARM);
stop = jiffies + HZ * 10;
while (c4inmeml(card->mbase + DOORBELL) != 0xffffffff) {
if (!time_before(jiffies, stop))
return;
c4outmeml(card->mbase + DOORBELL, DBELL_ADDR);
mb();
}
c4_poke(card, DC21285_ARMCSR_BASE + CHAN_1_CONTROL, 0);
c4_poke(card, DC21285_ARMCSR_BASE + CHAN_2_CONTROL, 0);
}
/* ------------------------------------------------------------- */
static int c4_detect(avmcard *card)
{
unsigned long stop, dummy;
c4outmeml(card->mbase + PCI_OUT_INT_MASK, 0x0c);
if (c4inmeml(card->mbase + PCI_OUT_INT_MASK) != 0x0c)
return 1;
c4outmeml(card->mbase + DOORBELL, DBELL_RESET_ARM);
stop = jiffies + HZ * 10;
while (c4inmeml(card->mbase + DOORBELL) != 0xffffffff) {
if (!time_before(jiffies, stop))
return 2;
c4outmeml(card->mbase + DOORBELL, DBELL_ADDR);
mb();
}
c4_poke(card, DC21285_ARMCSR_BASE + CHAN_1_CONTROL, 0);
c4_poke(card, DC21285_ARMCSR_BASE + CHAN_2_CONTROL, 0);
c4outmeml(card->mbase + MAILBOX_0, 0x55aa55aa);
if (c4inmeml(card->mbase + MAILBOX_0) != 0x55aa55aa) return 3;
c4outmeml(card->mbase + MAILBOX_0, 0xaa55aa55);
if (c4inmeml(card->mbase + MAILBOX_0) != 0xaa55aa55) return 4;
if (c4_poke(card, DC21285_ARMCSR_BASE + DBELL_SA_MASK, 0)) return 5;
if (c4_poke(card, DC21285_ARMCSR_BASE + DBELL_PCI_MASK, 0)) return 6;
if (c4_poke(card, DC21285_ARMCSR_BASE + SA_CONTROL, SA_CTL_ALLRIGHT))
return 7;
if (c4_poke(card, DC21285_ARMCSR_BASE + XBUS_CYCLE, INIT_XBUS_CYCLE))
return 8;
if (c4_poke(card, DC21285_ARMCSR_BASE + XBUS_STROBE, INIT_XBUS_STROBE))
return 8;
if (c4_poke(card, DC21285_ARMCSR_BASE + DRAM_TIMING, 0)) return 9;
mdelay(1);
if (c4_peek(card, DC21285_DRAM_A0MR, &dummy)) return 10;
if (c4_peek(card, DC21285_DRAM_A1MR, &dummy)) return 11;
if (c4_peek(card, DC21285_DRAM_A2MR, &dummy)) return 12;
if (c4_peek(card, DC21285_DRAM_A3MR, &dummy)) return 13;
if (c4_poke(card, DC21285_DRAM_A0MR + CAS_OFFSET, 0)) return 14;
if (c4_poke(card, DC21285_DRAM_A1MR + CAS_OFFSET, 0)) return 15;
if (c4_poke(card, DC21285_DRAM_A2MR + CAS_OFFSET, 0)) return 16;
if (c4_poke(card, DC21285_DRAM_A3MR + CAS_OFFSET, 0)) return 17;
mdelay(1);
if (c4_poke(card, DC21285_ARMCSR_BASE + DRAM_TIMING, DRAM_TIMING_DEF))
return 18;
if (c4_poke(card, DC21285_ARMCSR_BASE + DRAM_ADDR_SIZE_0, DRAM_AD_SZ_DEF0))
return 19;
if (c4_poke(card, DC21285_ARMCSR_BASE + DRAM_ADDR_SIZE_1, DRAM_AD_SZ_NULL))
return 20;
if (c4_poke(card, DC21285_ARMCSR_BASE + DRAM_ADDR_SIZE_2, DRAM_AD_SZ_NULL))
return 21;
if (c4_poke(card, DC21285_ARMCSR_BASE + DRAM_ADDR_SIZE_3, DRAM_AD_SZ_NULL))
return 22;
/* Transputer test */
if (c4_poke(card, 0x000000, 0x11111111)
|| c4_poke(card, 0x400000, 0x22222222)
|| c4_poke(card, 0x800000, 0x33333333)
|| c4_poke(card, 0xC00000, 0x44444444))
return 23;
if (c4_peek(card, 0x000000, &dummy) || dummy != 0x11111111
|| c4_peek(card, 0x400000, &dummy) || dummy != 0x22222222
|| c4_peek(card, 0x800000, &dummy) || dummy != 0x33333333
|| c4_peek(card, 0xC00000, &dummy) || dummy != 0x44444444)
return 24;
if (c4_poke(card, 0x000000, 0x55555555)
|| c4_poke(card, 0x400000, 0x66666666)
|| c4_poke(card, 0x800000, 0x77777777)
|| c4_poke(card, 0xC00000, 0x88888888))
return 25;
if (c4_peek(card, 0x000000, &dummy) || dummy != 0x55555555
|| c4_peek(card, 0x400000, &dummy) || dummy != 0x66666666
|| c4_peek(card, 0x800000, &dummy) || dummy != 0x77777777
|| c4_peek(card, 0xC00000, &dummy) || dummy != 0x88888888)
return 26;
return 0;
}
/* ------------------------------------------------------------- */
static void c4_dispatch_tx(avmcard *card)
{
avmcard_dmainfo *dma = card->dma;
struct sk_buff *skb;
u8 cmd, subcmd;
u16 len;
u32 txlen;
void *p;
if (card->csr & DBELL_DOWN_ARM) { /* tx busy */
return;
}
skb = skb_dequeue(&dma->send_queue);
if (!skb) {
#ifdef AVM_C4_DEBUG
printk(KERN_DEBUG "%s: tx underrun\n", card->name);
#endif
return;
}
len = CAPIMSG_LEN(skb->data);
if (len) {
cmd = CAPIMSG_COMMAND(skb->data);
subcmd = CAPIMSG_SUBCOMMAND(skb->data);
p = dma->sendbuf.dmabuf;
if (CAPICMD(cmd, subcmd) == CAPI_DATA_B3_REQ) {
u16 dlen = CAPIMSG_DATALEN(skb->data);
_put_byte(&p, SEND_DATA_B3_REQ);
_put_slice(&p, skb->data, len);
_put_slice(&p, skb->data + len, dlen);
} else {
_put_byte(&p, SEND_MESSAGE);
_put_slice(&p, skb->data, len);
}
txlen = (u8 *)p - (u8 *)dma->sendbuf.dmabuf;
#ifdef AVM_C4_DEBUG
printk(KERN_DEBUG "%s: tx put msg len=%d\n", card->name, txlen);
#endif
} else {
txlen = skb->len - 2;
#ifdef AVM_C4_POLLDEBUG
if (skb->data[2] == SEND_POLLACK)
printk(KERN_INFO "%s: ack to c4\n", card->name);
#endif
#ifdef AVM_C4_DEBUG
printk(KERN_DEBUG "%s: tx put 0x%x len=%d\n",
card->name, skb->data[2], txlen);
#endif
skb_copy_from_linear_data_offset(skb, 2, dma->sendbuf.dmabuf,
skb->len - 2);
}
txlen = (txlen + 3) & ~3;
c4outmeml(card->mbase + MBOX_DOWN_ADDR, dma->sendbuf.dmaaddr);
c4outmeml(card->mbase + MBOX_DOWN_LEN, txlen);
card->csr |= DBELL_DOWN_ARM;
c4outmeml(card->mbase + DOORBELL, DBELL_DOWN_ARM);
dev_kfree_skb_any(skb);
}
/* ------------------------------------------------------------- */
static void queue_pollack(avmcard *card)
{
struct sk_buff *skb;
void *p;
skb = alloc_skb(3, GFP_ATOMIC);
if (!skb) {
printk(KERN_CRIT "%s: no memory, lost poll ack\n",
card->name);
return;
}
p = skb->data;
_put_byte(&p, 0);
_put_byte(&p, 0);
_put_byte(&p, SEND_POLLACK);
skb_put(skb, (u8 *)p - (u8 *)skb->data);
skb_queue_tail(&card->dma->send_queue, skb);
c4_dispatch_tx(card);
}
/* ------------------------------------------------------------- */
static void c4_handle_rx(avmcard *card)
{
avmcard_dmainfo *dma = card->dma;
struct capi_ctr *ctrl;
avmctrl_info *cinfo;
struct sk_buff *skb;
void *p = dma->recvbuf.dmabuf;
u32 ApplId, MsgLen, DataB3Len, NCCI, WindowSize;
u8 b1cmd = _get_byte(&p);
u32 cidx;
#ifdef AVM_C4_DEBUG
printk(KERN_DEBUG "%s: rx 0x%x len=%lu\n", card->name,
b1cmd, (unsigned long)dma->recvlen);
#endif
switch (b1cmd) {
case RECEIVE_DATA_B3_IND:
ApplId = (unsigned) _get_word(&p);
MsgLen = _get_slice(&p, card->msgbuf);
DataB3Len = _get_slice(&p, card->databuf);
cidx = CAPIMSG_CONTROLLER(card->msgbuf)-card->cardnr;
if (cidx >= card->nlogcontr) cidx = 0;
ctrl = &card->ctrlinfo[cidx].capi_ctrl;
if (MsgLen < 30) { /* not CAPI 64Bit */
memset(card->msgbuf + MsgLen, 0, 30 - MsgLen);
MsgLen = 30;
CAPIMSG_SETLEN(card->msgbuf, 30);
}
if (!(skb = alloc_skb(DataB3Len + MsgLen, GFP_ATOMIC))) {
printk(KERN_ERR "%s: incoming packet dropped\n",
card->name);
} else {
memcpy(skb_put(skb, MsgLen), card->msgbuf, MsgLen);
memcpy(skb_put(skb, DataB3Len), card->databuf, DataB3Len);
capi_ctr_handle_message(ctrl, ApplId, skb);
}
break;
case RECEIVE_MESSAGE:
ApplId = (unsigned) _get_word(&p);
MsgLen = _get_slice(&p, card->msgbuf);
cidx = CAPIMSG_CONTROLLER(card->msgbuf)-card->cardnr;
if (cidx >= card->nlogcontr) cidx = 0;
cinfo = &card->ctrlinfo[cidx];
ctrl = &card->ctrlinfo[cidx].capi_ctrl;
if (!(skb = alloc_skb(MsgLen, GFP_ATOMIC))) {
printk(KERN_ERR "%s: incoming packet dropped\n",
card->name);
} else {
memcpy(skb_put(skb, MsgLen), card->msgbuf, MsgLen);
if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_CONF)
capilib_data_b3_conf(&cinfo->ncci_head, ApplId,
CAPIMSG_NCCI(skb->data),
CAPIMSG_MSGID(skb->data));
capi_ctr_handle_message(ctrl, ApplId, skb);
}
break;
case RECEIVE_NEW_NCCI:
ApplId = _get_word(&p);
NCCI = _get_word(&p);
WindowSize = _get_word(&p);
cidx = (NCCI & 0x7f) - card->cardnr;
if (cidx >= card->nlogcontr) cidx = 0;
capilib_new_ncci(&card->ctrlinfo[cidx].ncci_head, ApplId, NCCI, WindowSize);
break;
case RECEIVE_FREE_NCCI:
ApplId = _get_word(&p);
NCCI = _get_word(&p);
if (NCCI != 0xffffffff) {
cidx = (NCCI & 0x7f) - card->cardnr;
if (cidx >= card->nlogcontr) cidx = 0;
capilib_free_ncci(&card->ctrlinfo[cidx].ncci_head, ApplId, NCCI);
}
break;
case RECEIVE_START:
#ifdef AVM_C4_POLLDEBUG
printk(KERN_INFO "%s: poll from c4\n", card->name);
#endif
if (!suppress_pollack)
queue_pollack(card);
for (cidx = 0; cidx < card->nr_controllers; cidx++) {
ctrl = &card->ctrlinfo[cidx].capi_ctrl;
capi_ctr_resume_output(ctrl);
}
break;
case RECEIVE_STOP:
for (cidx = 0; cidx < card->nr_controllers; cidx++) {
ctrl = &card->ctrlinfo[cidx].capi_ctrl;
capi_ctr_suspend_output(ctrl);
}
break;
case RECEIVE_INIT:
cidx = card->nlogcontr;
if (cidx >= card->nr_controllers) {
printk(KERN_ERR "%s: card with %d controllers ??\n",
card->name, cidx + 1);
break;
}
card->nlogcontr++;
cinfo = &card->ctrlinfo[cidx];
ctrl = &cinfo->capi_ctrl;
cinfo->versionlen = _get_slice(&p, cinfo->versionbuf);
b1_parse_version(cinfo);
printk(KERN_INFO "%s: %s-card (%s) now active\n",
card->name,
cinfo->version[VER_CARDTYPE],
cinfo->version[VER_DRIVER]);
capi_ctr_ready(&cinfo->capi_ctrl);
break;
case RECEIVE_TASK_READY:
ApplId = (unsigned) _get_word(&p);
MsgLen = _get_slice(&p, card->msgbuf);
card->msgbuf[MsgLen] = 0;
while (MsgLen > 0
&& (card->msgbuf[MsgLen - 1] == '\n'
|| card->msgbuf[MsgLen - 1] == '\r')) {
card->msgbuf[MsgLen - 1] = 0;
MsgLen--;
}
printk(KERN_INFO "%s: task %d \"%s\" ready.\n",
card->name, ApplId, card->msgbuf);
break;
case RECEIVE_DEBUGMSG:
MsgLen = _get_slice(&p, card->msgbuf);
card->msgbuf[MsgLen] = 0;
while (MsgLen > 0
&& (card->msgbuf[MsgLen - 1] == '\n'
|| card->msgbuf[MsgLen - 1] == '\r')) {
card->msgbuf[MsgLen - 1] = 0;
MsgLen--;
}
printk(KERN_INFO "%s: DEBUG: %s\n", card->name, card->msgbuf);
break;
default:
printk(KERN_ERR "%s: c4_interrupt: 0x%x ???\n",
card->name, b1cmd);
return;
}
}
/* ------------------------------------------------------------- */
static irqreturn_t c4_handle_interrupt(avmcard *card)
{
unsigned long flags;
u32 status;
spin_lock_irqsave(&card->lock, flags);
status = c4inmeml(card->mbase + DOORBELL);
if (status & DBELL_RESET_HOST) {
u_int i;
c4outmeml(card->mbase + PCI_OUT_INT_MASK, 0x0c);
spin_unlock_irqrestore(&card->lock, flags);
if (card->nlogcontr == 0)
return IRQ_HANDLED;
printk(KERN_ERR "%s: unexpected reset\n", card->name);
for (i = 0; i < card->nr_controllers; i++) {
avmctrl_info *cinfo = &card->ctrlinfo[i];
memset(cinfo->version, 0, sizeof(cinfo->version));
spin_lock_irqsave(&card->lock, flags);
capilib_release(&cinfo->ncci_head);
spin_unlock_irqrestore(&card->lock, flags);
capi_ctr_down(&cinfo->capi_ctrl);
}
card->nlogcontr = 0;
return IRQ_HANDLED;
}
status &= (DBELL_UP_HOST | DBELL_DOWN_HOST);
if (!status) {
spin_unlock_irqrestore(&card->lock, flags);
return IRQ_HANDLED;
}
c4outmeml(card->mbase + DOORBELL, status);
if ((status & DBELL_UP_HOST) != 0) {
card->dma->recvlen = c4inmeml(card->mbase + MBOX_UP_LEN);
c4outmeml(card->mbase + MBOX_UP_LEN, 0);
c4_handle_rx(card);
card->dma->recvlen = 0;
c4outmeml(card->mbase + MBOX_UP_LEN, card->dma->recvbuf.size);
c4outmeml(card->mbase + DOORBELL, DBELL_UP_ARM);
}
if ((status & DBELL_DOWN_HOST) != 0) {
card->csr &= ~DBELL_DOWN_ARM;
c4_dispatch_tx(card);
} else if (card->csr & DBELL_DOWN_HOST) {
if (c4inmeml(card->mbase + MBOX_DOWN_LEN) == 0) {
card->csr &= ~DBELL_DOWN_ARM;
c4_dispatch_tx(card);
}
}
spin_unlock_irqrestore(&card->lock, flags);
return IRQ_HANDLED;
}
static irqreturn_t c4_interrupt(int interrupt, void *devptr)
{
avmcard *card = devptr;
return c4_handle_interrupt(card);
}
/* ------------------------------------------------------------- */
static void c4_send_init(avmcard *card)
{
struct sk_buff *skb;
void *p;
unsigned long flags;
skb = alloc_skb(15, GFP_ATOMIC);
if (!skb) {
printk(KERN_CRIT "%s: no memory, lost register appl.\n",
card->name);
return;
}
p = skb->data;
_put_byte(&p, 0);
_put_byte(&p, 0);
_put_byte(&p, SEND_INIT);
_put_word(&p, CAPI_MAXAPPL);
_put_word(&p, AVM_NCCI_PER_CHANNEL * 30);
_put_word(&p, card->cardnr - 1);
skb_put(skb, (u8 *)p - (u8 *)skb->data);
skb_queue_tail(&card->dma->send_queue, skb);
spin_lock_irqsave(&card->lock, flags);
c4_dispatch_tx(card);
spin_unlock_irqrestore(&card->lock, flags);
}
static int queue_sendconfigword(avmcard *card, u32 val)
{
struct sk_buff *skb;
unsigned long flags;
void *p;
skb = alloc_skb(3 + 4, GFP_ATOMIC);
if (!skb) {
printk(KERN_CRIT "%s: no memory, send config\n",
card->name);
return -ENOMEM;
}
p = skb->data;
_put_byte(&p, 0);
_put_byte(&p, 0);
_put_byte(&p, SEND_CONFIG);
_put_word(&p, val);
skb_put(skb, (u8 *)p - (u8 *)skb->data);
skb_queue_tail(&card->dma->send_queue, skb);
spin_lock_irqsave(&card->lock, flags);
c4_dispatch_tx(card);
spin_unlock_irqrestore(&card->lock, flags);
return 0;
}
static int queue_sendconfig(avmcard *card, char cval[4])
{
struct sk_buff *skb;
unsigned long flags;
void *p;
skb = alloc_skb(3 + 4, GFP_ATOMIC);
if (!skb) {
printk(KERN_CRIT "%s: no memory, send config\n",
card->name);
return -ENOMEM;
}
p = skb->data;
_put_byte(&p, 0);
_put_byte(&p, 0);
_put_byte(&p, SEND_CONFIG);
_put_byte(&p, cval[0]);
_put_byte(&p, cval[1]);
_put_byte(&p, cval[2]);
_put_byte(&p, cval[3]);
skb_put(skb, (u8 *)p - (u8 *)skb->data);
skb_queue_tail(&card->dma->send_queue, skb);
spin_lock_irqsave(&card->lock, flags);
c4_dispatch_tx(card);
spin_unlock_irqrestore(&card->lock, flags);
return 0;
}
static int c4_send_config(avmcard *card, capiloaddatapart *config)
{
u8 val[4];
unsigned char *dp;
u_int left;
int retval;
if ((retval = queue_sendconfigword(card, 1)) != 0)
return retval;
if ((retval = queue_sendconfigword(card, config->len)) != 0)
return retval;
dp = config->data;
left = config->len;
while (left >= sizeof(u32)) {
if (config->user) {
if (copy_from_user(val, dp, sizeof(val)))
return -EFAULT;
} else {
memcpy(val, dp, sizeof(val));
}
if ((retval = queue_sendconfig(card, val)) != 0)
return retval;
left -= sizeof(val);
dp += sizeof(val);
}
if (left) {
memset(val, 0, sizeof(val));
if (config->user) {
if (copy_from_user(&val, dp, left))
return -EFAULT;
} else {
memcpy(&val, dp, left);
}
if ((retval = queue_sendconfig(card, val)) != 0)
return retval;
}
return 0;
}
static int c4_load_firmware(struct capi_ctr *ctrl, capiloaddata *data)
{
avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
avmcard *card = cinfo->card;
int retval;
if ((retval = c4_load_t4file(card, &data->firmware))) {
printk(KERN_ERR "%s: failed to load t4file!!\n",
card->name);
c4_reset(card);
return retval;
}
card->csr = 0;
c4outmeml(card->mbase + MBOX_UP_LEN, 0);
c4outmeml(card->mbase + MBOX_DOWN_LEN, 0);
c4outmeml(card->mbase + DOORBELL, DBELL_INIT);
mdelay(1);
c4outmeml(card->mbase + DOORBELL,
DBELL_UP_HOST | DBELL_DOWN_HOST | DBELL_RESET_HOST);
c4outmeml(card->mbase + PCI_OUT_INT_MASK, 0x08);
card->dma->recvlen = 0;
c4outmeml(card->mbase + MBOX_UP_ADDR, card->dma->recvbuf.dmaaddr);
c4outmeml(card->mbase + MBOX_UP_LEN, card->dma->recvbuf.size);
c4outmeml(card->mbase + DOORBELL, DBELL_UP_ARM);
if (data->configuration.len > 0 && data->configuration.data) {
retval = c4_send_config(card, &data->configuration);
if (retval) {
printk(KERN_ERR "%s: failed to set config!!\n",
card->name);
c4_reset(card);
return retval;
}
}
c4_send_init(card);
return 0;
}
static void c4_reset_ctr(struct capi_ctr *ctrl)
{
avmcard *card = ((avmctrl_info *)(ctrl->driverdata))->card;
avmctrl_info *cinfo;
u_int i;
unsigned long flags;
spin_lock_irqsave(&card->lock, flags);
c4_reset(card);
spin_unlock_irqrestore(&card->lock, flags);
for (i = 0; i < card->nr_controllers; i++) {
cinfo = &card->ctrlinfo[i];
memset(cinfo->version, 0, sizeof(cinfo->version));
capi_ctr_down(&cinfo->capi_ctrl);
}
card->nlogcontr = 0;
}
static void c4_remove(struct pci_dev *pdev)
{
avmcard *card = pci_get_drvdata(pdev);
avmctrl_info *cinfo;
u_int i;
if (!card)
return;
c4_reset(card);
for (i = 0; i < card->nr_controllers; i++) {
cinfo = &card->ctrlinfo[i];
detach_capi_ctr(&cinfo->capi_ctrl);
}
free_irq(card->irq, card);
iounmap(card->mbase);
release_region(card->port, AVMB1_PORTLEN);
avmcard_dma_free(card->dma);
pci_set_drvdata(pdev, NULL);
b1_free_card(card);
}
/* ------------------------------------------------------------- */
static void c4_register_appl(struct capi_ctr *ctrl,
u16 appl,
capi_register_params *rp)
{
avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
avmcard *card = cinfo->card;
struct sk_buff *skb;
int want = rp->level3cnt;
unsigned long flags;
int nconn;
void *p;
if (ctrl->cnr == card->cardnr) {
if (want > 0) nconn = want;
else nconn = ctrl->profile.nbchannel * 4 * -want;
if (nconn == 0) nconn = ctrl->profile.nbchannel * 4;
skb = alloc_skb(23, GFP_ATOMIC);
if (!skb) {
printk(KERN_CRIT "%s: no memory, lost register appl.\n",
card->name);
return;
}
p = skb->data;
_put_byte(&p, 0);
_put_byte(&p, 0);
_put_byte(&p, SEND_REGISTER);
_put_word(&p, appl);
_put_word(&p, 1024 * (nconn + 1));
_put_word(&p, nconn);
_put_word(&p, rp->datablkcnt);
_put_word(&p, rp->datablklen);
skb_put(skb, (u8 *)p - (u8 *)skb->data);
skb_queue_tail(&card->dma->send_queue, skb);
spin_lock_irqsave(&card->lock, flags);
c4_dispatch_tx(card);
spin_unlock_irqrestore(&card->lock, flags);
}
}
/* ------------------------------------------------------------- */
static void c4_release_appl(struct capi_ctr *ctrl, u16 appl)
{
avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
avmcard *card = cinfo->card;
unsigned long flags;
struct sk_buff *skb;
void *p;
spin_lock_irqsave(&card->lock, flags);
capilib_release_appl(&cinfo->ncci_head, appl);
spin_unlock_irqrestore(&card->lock, flags);
if (ctrl->cnr == card->cardnr) {
skb = alloc_skb(7, GFP_ATOMIC);
if (!skb) {
printk(KERN_CRIT "%s: no memory, lost release appl.\n",
card->name);
return;
}
p = skb->data;
_put_byte(&p, 0);
_put_byte(&p, 0);
_put_byte(&p, SEND_RELEASE);
_put_word(&p, appl);
skb_put(skb, (u8 *)p - (u8 *)skb->data);
skb_queue_tail(&card->dma->send_queue, skb);
spin_lock_irqsave(&card->lock, flags);
c4_dispatch_tx(card);
spin_unlock_irqrestore(&card->lock, flags);
}
}
/* ------------------------------------------------------------- */
static u16 c4_send_message(struct capi_ctr *ctrl, struct sk_buff *skb)
{
avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
avmcard *card = cinfo->card;
u16 retval = CAPI_NOERROR;
unsigned long flags;
spin_lock_irqsave(&card->lock, flags);
if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_REQ) {
retval = capilib_data_b3_req(&cinfo->ncci_head,
CAPIMSG_APPID(skb->data),
CAPIMSG_NCCI(skb->data),
CAPIMSG_MSGID(skb->data));
}
if (retval == CAPI_NOERROR) {
skb_queue_tail(&card->dma->send_queue, skb);
c4_dispatch_tx(card);
}
spin_unlock_irqrestore(&card->lock, flags);
return retval;
}
/* ------------------------------------------------------------- */
static char *c4_procinfo(struct capi_ctr *ctrl)
{
avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
if (!cinfo)
return "";
sprintf(cinfo->infobuf, "%s %s 0x%x %d 0x%lx",
cinfo->cardname[0] ? cinfo->cardname : "-",
cinfo->version[VER_DRIVER] ? cinfo->version[VER_DRIVER] : "-",
cinfo->card ? cinfo->card->port : 0x0,
cinfo->card ? cinfo->card->irq : 0,
cinfo->card ? cinfo->card->membase : 0
);
return cinfo->infobuf;
}
static int c4_proc_show(struct seq_file *m, void *v)
{
struct capi_ctr *ctrl = m->private;
avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata);
avmcard *card = cinfo->card;
u8 flag;
char *s;
seq_printf(m, "%-16s %s\n", "name", card->name);
seq_printf(m, "%-16s 0x%x\n", "io", card->port);
seq_printf(m, "%-16s %d\n", "irq", card->irq);
seq_printf(m, "%-16s 0x%lx\n", "membase", card->membase);
switch (card->cardtype) {
case avm_b1isa: s = "B1 ISA"; break;
case avm_b1pci: s = "B1 PCI"; break;
case avm_b1pcmcia: s = "B1 PCMCIA"; break;
case avm_m1: s = "M1"; break;
case avm_m2: s = "M2"; break;
case avm_t1isa: s = "T1 ISA (HEMA)"; break;
case avm_t1pci: s = "T1 PCI"; break;
case avm_c4: s = "C4"; break;
case avm_c2: s = "C2"; break;
default: s = "???"; break;
}
seq_printf(m, "%-16s %s\n", "type", s);
if ((s = cinfo->version[VER_DRIVER]) != NULL)
seq_printf(m, "%-16s %s\n", "ver_driver", s);
if ((s = cinfo->version[VER_CARDTYPE]) != NULL)
seq_printf(m, "%-16s %s\n", "ver_cardtype", s);
if ((s = cinfo->version[VER_SERIAL]) != NULL)
seq_printf(m, "%-16s %s\n", "ver_serial", s);
if (card->cardtype != avm_m1) {
flag = ((u8 *)(ctrl->profile.manu))[3];
if (flag)
seq_printf(m, "%-16s%s%s%s%s%s%s%s\n",
"protocol",
(flag & 0x01) ? " DSS1" : "",
(flag & 0x02) ? " CT1" : "",
(flag & 0x04) ? " VN3" : "",
(flag & 0x08) ? " NI1" : "",
(flag & 0x10) ? " AUSTEL" : "",
(flag & 0x20) ? " ESS" : "",
(flag & 0x40) ? " 1TR6" : ""
);
}
if (card->cardtype != avm_m1) {
flag = ((u8 *)(ctrl->profile.manu))[5];
if (flag)
seq_printf(m, "%-16s%s%s%s%s\n",
"linetype",
(flag & 0x01) ? " point to point" : "",
(flag & 0x02) ? " point to multipoint" : "",
(flag & 0x08) ? " leased line without D-channel" : "",
(flag & 0x04) ? " leased line with D-channel" : ""
);
}
seq_printf(m, "%-16s %s\n", "cardname", cinfo->cardname);
return 0;
}
static int c4_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, c4_proc_show, PDE_DATA(inode));
}
static const struct file_operations c4_proc_fops = {
.owner = THIS_MODULE,
.open = c4_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
/* ------------------------------------------------------------- */
static int c4_add_card(struct capicardparams *p, struct pci_dev *dev,
int nr_controllers)
{
avmcard *card;
avmctrl_info *cinfo;
int retval;
int i;
card = b1_alloc_card(nr_controllers);
if (!card) {
printk(KERN_WARNING "c4: no memory.\n");
retval = -ENOMEM;
goto err;
}
card->dma = avmcard_dma_alloc("c4", dev, 2048 + 128, 2048 + 128);
if (!card->dma) {
printk(KERN_WARNING "c4: no memory.\n");
retval = -ENOMEM;
goto err_free;
}
sprintf(card->name, "c%d-%x", nr_controllers, p->port);
card->port = p->port;
card->irq = p->irq;
card->membase = p->membase;
card->cardtype = (nr_controllers == 4) ? avm_c4 : avm_c2;
if (!request_region(card->port, AVMB1_PORTLEN, card->name)) {
printk(KERN_WARNING "c4: ports 0x%03x-0x%03x in use.\n",
card->port, card->port + AVMB1_PORTLEN);
retval = -EBUSY;
goto err_free_dma;
}
card->mbase = ioremap(card->membase, 128);
if (card->mbase == NULL) {
printk(KERN_NOTICE "c4: can't remap memory at 0x%lx\n",
card->membase);
retval = -EIO;
goto err_release_region;
}
retval = c4_detect(card);
if (retval != 0) {
printk(KERN_NOTICE "c4: NO card at 0x%x error(%d)\n",
card->port, retval);
retval = -EIO;
goto err_unmap;
}
c4_reset(card);
retval = request_irq(card->irq, c4_interrupt, IRQF_SHARED, card->name, card);
if (retval) {
printk(KERN_ERR "c4: unable to get IRQ %d.\n", card->irq);
retval = -EBUSY;
goto err_unmap;
}
for (i = 0; i < nr_controllers; i++) {
cinfo = &card->ctrlinfo[i];
cinfo->capi_ctrl.owner = THIS_MODULE;
cinfo->capi_ctrl.driver_name = "c4";
cinfo->capi_ctrl.driverdata = cinfo;
cinfo->capi_ctrl.register_appl = c4_register_appl;
cinfo->capi_ctrl.release_appl = c4_release_appl;
cinfo->capi_ctrl.send_message = c4_send_message;
cinfo->capi_ctrl.load_firmware = c4_load_firmware;
cinfo->capi_ctrl.reset_ctr = c4_reset_ctr;
cinfo->capi_ctrl.procinfo = c4_procinfo;
cinfo->capi_ctrl.proc_fops = &c4_proc_fops;
strcpy(cinfo->capi_ctrl.name, card->name);
retval = attach_capi_ctr(&cinfo->capi_ctrl);
if (retval) {
printk(KERN_ERR "c4: attach controller failed (%d).\n", i);
for (i--; i >= 0; i--) {
cinfo = &card->ctrlinfo[i];
detach_capi_ctr(&cinfo->capi_ctrl);
}
goto err_free_irq;
}
if (i == 0)
card->cardnr = cinfo->capi_ctrl.cnr;
}
printk(KERN_INFO "c4: AVM C%d at i/o %#x, irq %d, mem %#lx\n",
nr_controllers, card->port, card->irq,
card->membase);
pci_set_drvdata(dev, card);
return 0;
err_free_irq:
free_irq(card->irq, card);
err_unmap:
iounmap(card->mbase);
err_release_region:
release_region(card->port, AVMB1_PORTLEN);
err_free_dma:
avmcard_dma_free(card->dma);
err_free:
b1_free_card(card);
err:
return retval;
}
/* ------------------------------------------------------------- */
static int c4_probe(struct pci_dev *dev, const struct pci_device_id *ent)
{
int nr = ent->driver_data;
int retval = 0;
struct capicardparams param;
if (pci_enable_device(dev) < 0) {
printk(KERN_ERR "c4: failed to enable AVM-C%d\n", nr);
return -ENODEV;
}
pci_set_master(dev);
param.port = pci_resource_start(dev, 1);
param.irq = dev->irq;
param.membase = pci_resource_start(dev, 0);
printk(KERN_INFO "c4: PCI BIOS reports AVM-C%d at i/o %#x, irq %d, mem %#x\n",
nr, param.port, param.irq, param.membase);
retval = c4_add_card(&param, dev, nr);
if (retval != 0) {
printk(KERN_ERR "c4: no AVM-C%d at i/o %#x, irq %d detected, mem %#x\n",
nr, param.port, param.irq, param.membase);
pci_disable_device(dev);
return -ENODEV;
}
return 0;
}
static struct pci_driver c4_pci_driver = {
.name = "c4",
.id_table = c4_pci_tbl,
.probe = c4_probe,
.remove = c4_remove,
};
static struct capi_driver capi_driver_c2 = {
.name = "c2",
.revision = "1.0",
};
static struct capi_driver capi_driver_c4 = {
.name = "c4",
.revision = "1.0",
};
static int __init c4_init(void)
{
char *p;
char rev[32];
int err;
if ((p = strchr(revision, ':')) != NULL && p[1]) {
strlcpy(rev, p + 2, 32);
if ((p = strchr(rev, '$')) != NULL && p > rev)
*(p - 1) = 0;
} else
strcpy(rev, "1.0");
err = pci_register_driver(&c4_pci_driver);
if (!err) {
strlcpy(capi_driver_c2.revision, rev, 32);
register_capi_driver(&capi_driver_c2);
strlcpy(capi_driver_c4.revision, rev, 32);
register_capi_driver(&capi_driver_c4);
printk(KERN_INFO "c4: revision %s\n", rev);
}
return err;
}
static void __exit c4_exit(void)
{
unregister_capi_driver(&capi_driver_c2);
unregister_capi_driver(&capi_driver_c4);
pci_unregister_driver(&c4_pci_driver);
}
module_init(c4_init);
module_exit(c4_exit);