diff options
author | Jiri Slaby <xslaby@fi.muni.cz> | 2006-01-09 20:54:24 -0800 |
---|---|---|
committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-10 08:02:00 -0800 |
commit | 9ac0948b20f76d9659add91f868c57383ea1e4e5 (patch) | |
tree | 3edb5c38d8201ebdf5ab277be02cf7c54cf86489 /drivers/char/isicom.c | |
parent | aaa246ea78c68cd205f505070650cda7c5a95d34 (diff) | |
download | kernel_samsung_smdk4412-9ac0948b20f76d9659add91f868c57383ea1e4e5.zip kernel_samsung_smdk4412-9ac0948b20f76d9659add91f868c57383ea1e4e5.tar.gz kernel_samsung_smdk4412-9ac0948b20f76d9659add91f868c57383ea1e4e5.tar.bz2 |
[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: Jiri Slaby <xslaby@fi.muni.cz>
Signed-off-by: Laurent Riffard <laurent.riffard@free.fr>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/char/isicom.c')
-rw-r--r-- | drivers/char/isicom.c | 447 |
1 files changed, 239 insertions, 208 deletions
diff --git a/drivers/char/isicom.c b/drivers/char/isicom.c index 49f88c9..9ef8ab3 100644 --- a/drivers/char/isicom.c +++ b/drivers/char/isicom.c @@ -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); |