Commit 9ac0948b authored by Jiri Slaby's avatar Jiri Slaby Committed by Linus Torvalds

[PATCH] char/isicom: Pci probing added

Pci probing functions added, most of functions rewrited because of it (some
for loops were redundant).  Used PCI_DEVICE macro.  dev_* used for printing
wherever possible.  Renamed some functions to have isicom_ in the name.
Signed-off-by: default avatarJiri Slaby <xslaby@fi.muni.cz>
Signed-off-by: default avatarLaurent Riffard <laurent.riffard@free.fr>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent aaa246ea
......@@ -107,7 +107,6 @@
* Omit those entries for boards you don't have installed.
*
* TODO
* Hotplug
* Merge testing
* 64-bit verification
*/
......@@ -146,20 +145,30 @@
#define isicom_paranoia_check(a, b, c) 0
#endif
static int isicom_probe(struct pci_dev *, const struct pci_device_id *);
static void __devexit isicom_remove(struct pci_dev *);
static struct pci_device_id isicom_pci_tbl[] = {
{ VENDOR_ID, 0x2028, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
{ VENDOR_ID, 0x2051, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
{ VENDOR_ID, 0x2052, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
{ VENDOR_ID, 0x2053, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
{ VENDOR_ID, 0x2054, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
{ VENDOR_ID, 0x2055, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
{ VENDOR_ID, 0x2056, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
{ VENDOR_ID, 0x2057, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
{ VENDOR_ID, 0x2058, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
{ PCI_DEVICE(VENDOR_ID, 0x2028) },
{ PCI_DEVICE(VENDOR_ID, 0x2051) },
{ PCI_DEVICE(VENDOR_ID, 0x2052) },
{ PCI_DEVICE(VENDOR_ID, 0x2053) },
{ PCI_DEVICE(VENDOR_ID, 0x2054) },
{ PCI_DEVICE(VENDOR_ID, 0x2055) },
{ PCI_DEVICE(VENDOR_ID, 0x2056) },
{ PCI_DEVICE(VENDOR_ID, 0x2057) },
{ PCI_DEVICE(VENDOR_ID, 0x2058) },
{ 0 }
};
MODULE_DEVICE_TABLE(pci, isicom_pci_tbl);
static struct pci_driver isicom_driver = {
.name = "isicom",
.id_table = isicom_pci_tbl,
.probe = isicom_probe,
.remove = __devexit_p(isicom_remove)
};
static int prev_card = 3; /* start servicing isi_card[0] */
static struct tty_driver *isicom_normal;
......@@ -171,8 +180,6 @@ static int ISILoad_ioctl(struct inode *inode, struct file *filp, unsigned int c
static void isicom_tx(unsigned long _data);
static void isicom_start(struct tty_struct *tty);
static unsigned char *tmp_buf;
/* baud index mappings from linux defns to isi */
static signed char linuxb_to_isib[] = {
......@@ -1365,7 +1372,7 @@ static int isicom_write(struct tty_struct *tty, const unsigned char *buf,
if (isicom_paranoia_check(port, tty->name, "isicom_write"))
return 0;
if (!tty || !port->xmit_buf || !tmp_buf)
if (!tty || !port->xmit_buf)
return 0;
spin_lock_irqsave(&card->card_lock, flags);
......@@ -1731,32 +1738,39 @@ static void isicom_flush_buffer(struct tty_struct *tty)
tty_wakeup(tty);
}
/*
* Driver init and deinit functions
*/
static int __devinit register_ioregion(void)
static int __devinit isicom_register_ioregion(struct pci_dev *pdev,
const unsigned int index)
{
int count, done=0;
for (count=0; count < BOARD_COUNT; count++ ) {
if (isi_card[count].base)
if (!request_region(isi_card[count].base,16,ISICOM_NAME)) {
printk(KERN_DEBUG "ISICOM: I/O Region 0x%lx-0x%lx is busy. Card%d will be disabled.\n",
isi_card[count].base,isi_card[count].base+15,count+1);
isi_card[count].base=0;
done++;
}
}
return done;
struct isi_board *board = pci_get_drvdata(pdev);
if (!board->base)
return -EINVAL;
if (!request_region(board->base, 16, ISICOM_NAME)) {
dev_dbg(&pdev->dev, "I/O Region 0x%lx-0x%lx is busy. Card%d "
"will be disabled.\n", board->base, board->base + 15,
index + 1);
return -EBUSY;
}
return 0;
}
static void unregister_ioregion(void)
static void isicom_unregister_ioregion(struct pci_dev *pdev)
{
int count;
for (count=0; count < BOARD_COUNT; count++ )
if (isi_card[count].base) {
release_region(isi_card[count].base,16);
#ifdef ISICOM_DEBUG
printk(KERN_DEBUG "ISICOM: I/O Region 0x%lx-0x%lx released for Card%d.\n",isi_card[count].base,isi_card[count].base+15,count+1);
#endif
}
struct isi_board *board = pci_get_drvdata(pdev);
if (!board->base)
return;
release_region(board->base, 16);
dev_dbg(&pdev->dev, "I/O Region 0x%lx-0x%lx released.\n",
board->base, board->base + 15);
board->base = 0;
}
static struct tty_operations isicom_ops = {
......@@ -1820,207 +1834,223 @@ static void isicom_unregister_tty_driver(void)
put_tty_driver(isicom_normal);
}
static int __devinit register_isr(void)
static int __devinit isicom_register_isr(struct pci_dev *pdev,
const unsigned int index)
{
int count, done=0;
unsigned long irqflags;
for (count=0; count < BOARD_COUNT; count++ ) {
if (isi_card[count].base) {
irqflags = (isi_card[count].isa == YES) ?
SA_INTERRUPT :
(SA_INTERRUPT | SA_SHIRQ);
if (request_irq(isi_card[count].irq,
isicom_interrupt,
irqflags,
ISICOM_NAME, &isi_card[count])) {
printk(KERN_WARNING "ISICOM: Could not"
" install handler at Irq %d."
" Card%d will be disabled.\n",
isi_card[count].irq, count+1);
release_region(isi_card[count].base,16);
isi_card[count].base=0;
}
else
done++;
}
}
return done;
}
struct isi_board *board = pci_get_drvdata(pdev);
unsigned long irqflags = SA_INTERRUPT;
int retval = -EINVAL;
static void __exit unregister_isr(void)
{
int count;
if (!board->base)
goto end;
for (count=0; count < BOARD_COUNT; count++ ) {
if (isi_card[count].base)
free_irq(isi_card[count].irq, &isi_card[count]);
}
if (board->isa == NO)
irqflags |= SA_SHIRQ;
retval = request_irq(board->irq, isicom_interrupt, irqflags,
ISICOM_NAME, board);
if (retval < 0)
dev_warn(&pdev->dev, "Could not install handler at Irq %d. "
"Card%d will be disabled.\n", board->irq, index + 1);
else
retval = 0;
end:
return retval;
}
static int __devinit isicom_init(void)
static int __devinit reset_card(struct pci_dev *pdev,
const unsigned int card, unsigned int *signature)
{
int card, channel, base;
struct isi_port *port;
unsigned long page;
struct isi_board *board = pci_get_drvdata(pdev);
unsigned long base = board->base;
unsigned int portcount = 0;
int retval = 0;
if (!tmp_buf) {
page = get_zeroed_page(GFP_KERNEL);
if (!page) {
#ifdef ISICOM_DEBUG
printk(KERN_DEBUG "ISICOM: Couldn't allocate page for tmp_buf.\n");
#else
printk(KERN_ERR "ISICOM: Not enough memory...\n");
#endif
return 0;
}
tmp_buf = (unsigned char *) page;
}
dev_dbg(&pdev->dev, "ISILoad:Resetting Card%d at 0x%lx\n", card + 1,
base);
if (!register_ioregion())
{
printk(KERN_ERR "ISICOM: All required I/O space found busy.\n");
free_page((unsigned long)tmp_buf);
return 0;
}
if (isicom_register_tty_driver())
{
unregister_ioregion();
free_page((unsigned long)tmp_buf);
return 0;
}
if (!register_isr())
{
isicom_unregister_tty_driver();
/* ioports already uregistered in register_isr */
free_page((unsigned long)tmp_buf);
return 0;
}
inw(base + 0x8);
memset(isi_ports, 0, sizeof(isi_ports));
for (card = 0; card < BOARD_COUNT; card++) {
port = &isi_ports[card * 16];
isi_card[card].ports = port;
spin_lock_init(&isi_card[card].card_lock);
base = isi_card[card].base;
for (channel = 0; channel < 16; channel++, port++) {
port->magic = ISICOM_MAGIC;
port->card = &isi_card[card];
port->channel = channel;
port->close_delay = 50 * HZ/100;
port->closing_wait = 3000 * HZ/100;
INIT_WORK(&port->hangup_tq, do_isicom_hangup, port);
INIT_WORK(&port->bh_tqueue, isicom_bottomhalf, port);
port->status = 0;
init_waitqueue_head(&port->open_wait);
init_waitqueue_head(&port->close_wait);
/* . . . */
mdelay(10);
outw(0, base + 0x8); /* Reset */
msleep(3000);
*signature = inw(base + 0x4) & 0xff;
if (board->isa == YES) {
if (!(inw(base + 0xe) & 0x1) || (inw(base + 0x2))) {
dev_dbg(&pdev->dev, "base+0x2=0x%lx, base+0xe=0x%lx\n",
inw(base + 0x2), inw(base + 0xe));
dev_err(&pdev->dev, "ISILoad:ISA Card%d reset failure "
"(Possible bad I/O Port Address 0x%lx).\n",
card + 1, base);
retval = -EIO;
goto end;
}
} else {
portcount = inw(base + 0x2);
if (!(inw(base + 0xe) & 0x1) || ((portcount != 0) &&
(portcount != 4) && (portcount != 8))) {
dev_dbg(&pdev->dev, "base+0x2=0x%lx, base+0xe=0x%lx\n",
inw(base + 0x2), inw(base + 0xe));
dev_err(&pdev->dev, "ISILoad:PCI Card%d reset failure "
"(Possible bad I/O Port Address 0x%lx).\n",
card + 1, base);
retval = -EIO;
goto end;
}
}
switch (*signature) {
case 0xa5:
case 0xbb:
case 0xdd:
board->port_count = (board->isa == NO && portcount == 4) ? 4 :
8;
board->shift_count = 12;
break;
case 0xcc:
board->port_count = 16;
board->shift_count = 11;
break;
default:
dev_warn(&pdev->dev, "ISILoad:Card%d reset failure (Possible "
"bad I/O Port Address 0x%lx).\n", card + 1, base);
dev_dbg(&pdev->dev, "Sig=0x%lx\n", signature);
retval = -EIO;
}
dev_info(&pdev->dev, "-Done\n");
return 1;
end:
return retval;
}
/*
* Insmod can set static symbols so keep these static
*/
static int io[4];
static int irq[4];
static int card;
static int __devinit isicom_probe(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
unsigned int ioaddr, signature, index;
int retval = -EPERM;
u8 pciirq;
struct isi_board *board = NULL;
if (card >= BOARD_COUNT)
goto err;
ioaddr = pci_resource_start(pdev, 3);
/* i.e at offset 0x1c in the PCI configuration register space. */
pciirq = pdev->irq;
dev_info(&pdev->dev, "ISI PCI Card(Device ID 0x%x)\n", ent->device);
/* allot the first empty slot in the array */
for (index = 0; index < BOARD_COUNT; index++)
if (isi_card[index].base == 0) {
board = &isi_card[index];
break;
}
board->base = ioaddr;
board->irq = pciirq;
board->isa = NO;
card++;
pci_set_drvdata(pdev, board);
retval = isicom_register_ioregion(pdev, index);
if (retval < 0)
goto err;
retval = isicom_register_isr(pdev, index);
if (retval < 0)
goto errunrr;
retval = reset_card(pdev, index, &signature);
if (retval < 0)
goto errunri;
return 0;
errunri:
free_irq(board->irq, board);
errunrr:
isicom_unregister_ioregion(pdev);
err:
board->base = 0;
return retval;
}
static void __devexit isicom_remove(struct pci_dev *pdev)
{
struct isi_board *board = pci_get_drvdata(pdev);
free_irq(board->irq, board);
isicom_unregister_ioregion(pdev);
}
static int __devinit isicom_setup(void)
{
struct pci_dev *dev = NULL;
int retval, card, idx, count;
unsigned char pciirq;
unsigned int ioaddr;
int retval, idx, channel;
struct isi_port *port;
card = 0;
for (idx=0; idx < BOARD_COUNT; idx++) {
if (io[idx]) {
isi_card[idx].base=io[idx];
isi_card[idx].irq=irq[idx];
isi_card[idx].isa=YES;
card++;
}
else {
isi_card[idx].base = 0;
isi_card[idx].irq = 0;
}
}
for (idx=0 ;idx < card; idx++) {
if (!((isi_card[idx].irq==2)||(isi_card[idx].irq==3)||
(isi_card[idx].irq==4)||(isi_card[idx].irq==5)||
(isi_card[idx].irq==7)||(isi_card[idx].irq==10)||
(isi_card[idx].irq==11)||(isi_card[idx].irq==12)||
(isi_card[idx].irq==15))) {
if (isi_card[idx].base) {
printk(KERN_ERR "ISICOM: Irq %d unsupported. Disabling Card%d...\n",
isi_card[idx].irq, idx+1);
isi_card[idx].base=0;
card--;
}
}
}
memset(isi_ports, 0, sizeof(isi_ports));
if (card < BOARD_COUNT) {
for (idx=0; idx < DEVID_COUNT; idx++) {
dev = NULL;
for (;;){
if (!(dev = pci_find_device(VENDOR_ID, isicom_pci_tbl[idx].device, dev)))
break;
if (card >= BOARD_COUNT)
break;
for(idx = 0; idx < BOARD_COUNT; idx++) {
port = &isi_ports[idx * 16];
isi_card[idx].ports = port;
spin_lock_init(&isi_card[idx].card_lock);
for (channel = 0; channel < 16; channel++, port++) {
port->magic = ISICOM_MAGIC;
port->card = &isi_card[idx];
port->channel = channel;
port->close_delay = 50 * HZ/100;
port->closing_wait = 3000 * HZ/100;
INIT_WORK(&port->hangup_tq, do_isicom_hangup, port);
INIT_WORK(&port->bh_tqueue, isicom_bottomhalf, port);
port->status = 0;
init_waitqueue_head(&port->open_wait);
init_waitqueue_head(&port->close_wait);
/* . . . */
}
isi_card[idx].base = 0;
isi_card[idx].irq = 0;
if (pci_enable_device(dev))
break;
if (!io[idx])
continue;
/* found a PCI ISI card! */
ioaddr = pci_resource_start (dev, 3);
/* i.e at offset 0x1c in the
* PCI configuration register
* space.
*/
pciirq = dev->irq;
printk(KERN_INFO "ISI PCI Card(Device ID 0x%x)\n", isicom_pci_tbl[idx].device);
/*
* allot the first empty slot in the array
*/
for (count=0; count < BOARD_COUNT; count++) {
if (isi_card[count].base == 0) {
isi_card[count].base = ioaddr;
isi_card[count].irq = pciirq;
isi_card[count].isa = NO;
card++;
break;
}
}
}
if (card >= BOARD_COUNT) break;
}
if (irq[idx] == 2 || irq[idx] == 3 || irq[idx] == 4 ||
irq[idx] == 5 || irq[idx] == 7 ||
irq[idx] == 10 || irq[idx] == 11 ||
irq[idx] == 12 || irq[idx] == 15) {
printk(KERN_ERR "ISICOM: ISA not supported yet.\n");
retval = -EINVAL;
goto error;
} else
printk(KERN_ERR "ISICOM: Irq %d unsupported. "
"Disabling Card%d...\n", irq[idx], idx + 1);
}
if (!(isi_card[0].base || isi_card[1].base || isi_card[2].base || isi_card[3].base)) {
printk(KERN_ERR "ISICOM: No valid card configuration. Driver cannot be initialized...\n");
return -EIO;
}
retval = isicom_register_tty_driver();
if (retval < 0)
goto error;
retval = misc_register(&isiloader_device);
retval = pci_register_driver(&isicom_driver);
if (retval < 0) {
printk(KERN_ERR "ISICOM: Unable to register firmware loader driver.\n");
return retval;
printk(KERN_ERR "ISICOM: Unable to register pci driver.\n");
goto errtty;
}
if (!isicom_init()) {
if (misc_deregister(&isiloader_device))
printk(KERN_ERR "ISICOM: Unable to unregister Firmware Loader driver\n");
return -EIO;
}
retval = misc_register(&isiloader_device);
if (retval < 0)
goto errpci;
init_timer(&tx);
tx.expires = jiffies + 1;
......@@ -2030,6 +2060,12 @@ static int __devinit isicom_setup(void)
add_timer(&tx);
return 0;
errpci:
pci_unregister_driver(&isicom_driver);
errtty:
isicom_unregister_tty_driver();
error:
return retval;
}
static void __exit isicom_exit(void)
......@@ -2041,13 +2077,8 @@ static void __exit isicom_exit(void)
while (re_schedule != 2 && index++ < 100)
msleep(10);
unregister_isr();
pci_unregister_driver(&isicom_driver);
isicom_unregister_tty_driver();
unregister_ioregion();
if (tmp_buf)
free_page((unsigned long)tmp_buf);
if (misc_deregister(&isiloader_device))
printk(KERN_ERR "ISICOM: Unable to unregister Firmware Loader driver\n");
}
module_init(isicom_setup);
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment