[ISDN] hysdn: convert to PCI hotplug API

Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 130 insertions, 144 deletions

diff --git a/drivers/isdn/hysdn/hysdn_init.c b/drivers/isdn/hysdn/hysdn_init.c
index 9e01748a176e..b7cc5c2f08c6 100644
--- a/drivers/isdn/hysdn/hysdn_init.c
+++ b/drivers/isdn/hysdn/hysdn_init.c
@@ -20,10 +20,15 @@
 #include "hysdn_defs.h"
 
 static struct pci_device_id hysdn_pci_tbl[] = {
-        {PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX, PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_METRO},
-        {PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX, PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_CHAMP2},
-        {PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX, PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_ERGO},
-        {PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX, PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_OLD_ERGO},
+        { PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX,
+          PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_METRO, 0, 0, BD_METRO },
+        { PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX,
+          PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_CHAMP2, 0, 0, BD_CHAMP2 },
+        { PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX,
+          PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_ERGO, 0, 0, BD_ERGO },
+        { PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX,
+          PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_OLD_ERGO, 0, 0, BD_ERGO },
+
         { }                             /* Terminating entry */
 };
 MODULE_DEVICE_TABLE(pci, hysdn_pci_tbl);
@@ -34,128 +39,7 @@ MODULE_LICENSE("GPL");
 static char *hysdn_init_revision = "$Revision: 1.6.6.6 $";
 static int cardmax;             /* number of found cards */
 hysdn_card *card_root = NULL;   /* pointer to first card */
-
-/**********************************************/
-/* table assigning PCI-sub ids to board types */
-/* the last entry contains all 0              */
-/**********************************************/
-static struct {
-        unsigned short subid;           /* PCI sub id */
-        unsigned char cardtyp;          /* card type assigned */
-} pci_subid_map[] = {
-
-        {
-                PCI_SUBDEVICE_ID_HYPERCOPE_METRO, BD_METRO
-        },
-        {
-                PCI_SUBDEVICE_ID_HYPERCOPE_CHAMP2, BD_CHAMP2
-        },
-        {
-                PCI_SUBDEVICE_ID_HYPERCOPE_ERGO, BD_ERGO
-        },
-        {
-                PCI_SUBDEVICE_ID_HYPERCOPE_OLD_ERGO, BD_ERGO
-        },
-        {
-                0, 0
-        }                       /* terminating entry */
-};
-
-
-/*********************************************************************/
-/* search_cards searches for available cards in the pci config data. */
-/* If a card is found, the card structure is allocated and the cards */
-/* ressources are reserved. cardmax is incremented.                  */
-/*********************************************************************/
-static void
-search_cards(void)
-{
-        struct pci_dev *akt_pcidev = NULL;
-        hysdn_card *card, *card_last;
-        int i;
-
-        card_root = NULL;
-        card_last = NULL;
-        while ((akt_pcidev = pci_find_device(PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX,
-                                             akt_pcidev)) != NULL) {
-                if (pci_enable_device(akt_pcidev))
-                        continue;
-
-                if (!(card = kzalloc(sizeof(hysdn_card), GFP_KERNEL))) {
-                        printk(KERN_ERR "HYSDN: unable to alloc device mem \n");
-                        return;
-                }
-                card->myid = cardmax;   /* set own id */
-                card->bus = akt_pcidev->bus->number;
-                card->devfn = akt_pcidev->devfn;        /* slot + function */
-                card->subsysid = akt_pcidev->subsystem_device;
-                card->irq = akt_pcidev->irq;
-                card->iobase = pci_resource_start(akt_pcidev, PCI_REG_PLX_IO_BASE);
-                card->plxbase = pci_resource_start(akt_pcidev, PCI_REG_PLX_MEM_BASE);
-                card->membase = pci_resource_start(akt_pcidev, PCI_REG_MEMORY_BASE);
-                card->brdtype = BD_NONE;        /* unknown */
-                card->debug_flags = DEF_DEB_FLAGS;      /* set default debug */
-                card->faxchans = 0;     /* default no fax channels */
-                card->bchans = 2;       /* and 2 b-channels */
-                for (i = 0; pci_subid_map[i].subid; i++)
-                        if (pci_subid_map[i].subid == card->subsysid) {
-                                card->brdtype = pci_subid_map[i].cardtyp;
-                                break;
-                        }
-                if (card->brdtype != BD_NONE) {
-                        if (ergo_inithardware(card)) {
-                                printk(KERN_WARNING "HYSDN: card at io 0x%04x already in use\n", card->iobase);
-                                kfree(card);
-                                continue;
-                        }
-                } else {
-                        printk(KERN_WARNING "HYSDN: unknown card id 0x%04x\n", card->subsysid);
-                        kfree(card);    /* release mem */
-                        continue;
-                }
-                cardmax++;
-                card->next = NULL;      /*end of chain */
-                if (card_last)
-                        card_last->next = card;         /* pointer to next card */
-                else
-                        card_root = card;
-                card_last = card;       /* new chain end */
-        }                       /* device found */
-}                               /* search_cards */
-
-/************************************************************************************/
-/* free_resources frees the acquired PCI resources and returns the allocated memory */
-/************************************************************************************/
-static void
-free_resources(void)
-{
-        hysdn_card *card;
-
-        while (card_root) {
-                card = card_root;
-                if (card->releasehardware)
-                        card->releasehardware(card);    /* free all hardware resources */
-                card_root = card_root->next;    /* remove card from chain */
-                kfree(card);    /* return mem */
-
-        }                       /* while card_root */
-}                               /* free_resources */
-
-/**************************************************************************/
-/* stop_cards disables (hardware resets) all cards and disables interrupt */
-/**************************************************************************/
-static void
-stop_cards(void)
-{
-        hysdn_card *card;
-
-        card = card_root;       /* first in chain */
-        while (card) {
-                if (card->stopcard)
-                        card->stopcard(card);
-                card = card->next;      /* remove card from chain */
-        }                       /* while card */
-}                               /* stop_cards */
+static hysdn_card *card_last = NULL;    /* pointer to first card */
 
 
 /****************************************************************************/
@@ -191,31 +75,138 @@ hysdn_getrev(const char *revision)
 /* and the module is added to the list in /proc/modules, otherwise an error */
 /* is assumed and the module will not be kept in memory.                    */
 /****************************************************************************/
+
+static int __devinit hysdn_pci_init_one(struct pci_dev *akt_pcidev,
+                                        const struct pci_device_id *ent)
+{
+        hysdn_card *card;
+        int rc;
+
+        rc = pci_enable_device(akt_pcidev);
+        if (rc)
+                return rc;
+
+        if (!(card = kzalloc(sizeof(hysdn_card), GFP_KERNEL))) {
+                printk(KERN_ERR "HYSDN: unable to alloc device mem \n");
+                rc = -ENOMEM;
+                goto err_out;
+        }
+        card->myid = cardmax;   /* set own id */
+        card->bus = akt_pcidev->bus->number;
+        card->devfn = akt_pcidev->devfn;        /* slot + function */
+        card->subsysid = akt_pcidev->subsystem_device;
+        card->irq = akt_pcidev->irq;
+        card->iobase = pci_resource_start(akt_pcidev, PCI_REG_PLX_IO_BASE);
+        card->plxbase = pci_resource_start(akt_pcidev, PCI_REG_PLX_MEM_BASE);
+        card->membase = pci_resource_start(akt_pcidev, PCI_REG_MEMORY_BASE);
+        card->brdtype = BD_NONE;        /* unknown */
+        card->debug_flags = DEF_DEB_FLAGS;      /* set default debug */
+        card->faxchans = 0;     /* default no fax channels */
+        card->bchans = 2;       /* and 2 b-channels */
+        card->brdtype = ent->driver_data;
+
+        if (ergo_inithardware(card)) {
+                printk(KERN_WARNING "HYSDN: card at io 0x%04x already in use\n", card->iobase);
+                rc = -EBUSY;
+                goto err_out_card;
+        }
+
+        cardmax++;
+        card->next = NULL;      /*end of chain */
+        if (card_last)
+                card_last->next = card;         /* pointer to next card */
+        else
+                card_root = card;
+        card_last = card;       /* new chain end */
+
+        pci_set_drvdata(akt_pcidev, card);
+        return 0;
+
+err_out_card:
+        kfree(card);
+err_out:
+        pci_disable_device(akt_pcidev);
+        return rc;
+}
+
+static void __devexit hysdn_pci_remove_one(struct pci_dev *akt_pcidev)
+{
+        hysdn_card *card = pci_get_drvdata(akt_pcidev);
+
+        pci_set_drvdata(akt_pcidev, NULL);
+
+        if (card->stopcard)
+                card->stopcard(card);
+
+#ifdef CONFIG_HYSDN_CAPI
+        hycapi_capi_release(card);
+#endif
+
+        if (card->releasehardware)
+                card->releasehardware(card);   /* free all hardware resources */
+
+        if (card == card_root) {
+                card_root = card_root->next;
+                if (!card_root)
+                        card_last = NULL;
+        } else {
+                hysdn_card *tmp = card_root;
+                while (tmp) {
+                        if (tmp->next == card)
+                                tmp->next = card->next;
+                        card_last = tmp;
+                        tmp = tmp->next;
+                }
+        }
+
+        kfree(card);
+        pci_disable_device(akt_pcidev);
+}
+
+static struct pci_driver hysdn_pci_driver = {
+        .name           = "hysdn",
+        .id_table       = hysdn_pci_tbl,
+        .probe          = hysdn_pci_init_one,
+        .remove         = __devexit_p(hysdn_pci_remove_one),
+};
+
+static int hysdn_have_procfs;
+
 static int __init
 hysdn_init(void)
 {
         char tmp[50];
+        int rc;
 
         strcpy(tmp, hysdn_init_revision);
         printk(KERN_NOTICE "HYSDN: module Rev: %s loaded\n", hysdn_getrev(tmp));
         strcpy(tmp, hysdn_net_revision);
         printk(KERN_NOTICE "HYSDN: network interface Rev: %s \n", hysdn_getrev(tmp));
-        search_cards();
+
+        rc = pci_register_driver(&hysdn_pci_driver);
+        if (rc)
+                return rc;
+
         printk(KERN_INFO "HYSDN: %d card(s) found.\n", cardmax);
 
-        if (hysdn_procconf_init()) {
-                free_resources();       /* proc file_sys not created */
-                return (-1);
-        }
+        if (!hysdn_procconf_init())
+                hysdn_have_procfs = 1;
+
 #ifdef CONFIG_HYSDN_CAPI
         if(cardmax > 0) {
                 if(hycapi_init()) {
                         printk(KERN_ERR "HYCAPI: init failed\n");
-                        return(-1);
+
+                        if (hysdn_have_procfs)
+                                hysdn_procconf_release();
+
+                        pci_unregister_driver(&hysdn_pci_driver);
+                        return -ESPIPE;
                 }
         }
 #endif /* CONFIG_HYSDN_CAPI */
-        return (0);             /* no error */
+
+        return 0;               /* no error */
 }                               /* init_module */
 
 
@@ -230,20 +221,15 @@ hysdn_init(void)
 static void __exit
 hysdn_exit(void)
 {
+        if (hysdn_have_procfs)
+                hysdn_procconf_release();
+
+        pci_unregister_driver(&hysdn_pci_driver);
+
 #ifdef CONFIG_HYSDN_CAPI
-        hysdn_card *card;
-#endif /* CONFIG_HYSDN_CAPI */
-        stop_cards();
-#ifdef CONFIG_HYSDN_CAPI
-        card = card_root;       /* first in chain */
-        while (card) {
-                hycapi_capi_release(card);
-                card = card->next;      /* remove card from chain */
-        }                       /* while card */
         hycapi_cleanup();
 #endif /* CONFIG_HYSDN_CAPI */
-        hysdn_procconf_release();
-        free_resources();
+
         printk(KERN_NOTICE "HYSDN: module unloaded\n");
 }                               /* cleanup_module */