[PATCH] fix up newly added jsm driver
[linux-2.6.git] / drivers / serial / jsm / jsm_driver.c
index d4847d4f1473d37d710156710907bda2c9e39a5f..cc5d21300ed31f080d4771db11fa52ac9b2decc7 100644 (file)
@@ -29,7 +29,9 @@
 #include "jsm.h"
 
 MODULE_AUTHOR("Digi International, http://www.digi.com");
 #include "jsm.h"
 
 MODULE_AUTHOR("Digi International, http://www.digi.com");
-MODULE_DESCRIPTION("Driver for the Digi International Neo PCI based product line");
+MODULE_DESCRIPTION("Driver for the Digi International "
+                  "Neo PCI based product line");
+MODULE_LICENSE("GPL");
 MODULE_SUPPORTED_DEVICE("jsm");
 
 #define JSM_DRIVER_NAME "jsm"
 MODULE_SUPPORTED_DEVICE("jsm");
 
 #define JSM_DRIVER_NAME "jsm"
@@ -43,7 +45,6 @@ struct uart_driver jsm_uart_driver = {
        .major          = 253,
        .minor          = JSM_MINOR_START,
        .nr             = NR_PORTS,
        .major          = 253,
        .minor          = JSM_MINOR_START,
        .nr             = NR_PORTS,
-       .cons           = NULL,
 };
 
 int jsm_debug;
 };
 
 int jsm_debug;
@@ -53,193 +54,99 @@ module_param(jsm_rawreadok, int, 0);
 MODULE_PARM_DESC(jsm_debug, "Driver debugging level");
 MODULE_PARM_DESC(jsm_rawreadok, "Bypass flip buffers on input");
 
 MODULE_PARM_DESC(jsm_debug, "Driver debugging level");
 MODULE_PARM_DESC(jsm_rawreadok, "Bypass flip buffers on input");
 
-/*
- * Globals
- */
-int            jsm_driver_state = DRIVER_INITIALIZED;
-spinlock_t     jsm_board_head_lock = SPIN_LOCK_UNLOCKED;
-LIST_HEAD(jsm_board_head);
-
-static struct pci_device_id jsm_pci_tbl[] = {
-       { PCI_DEVICE (PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2DB9),      0,      0,      0 },
-       { PCI_DEVICE (PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2DB9PRI),   0,      0,      1 },
-       { PCI_DEVICE (PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2RJ45),     0,      0,      2 },
-       { PCI_DEVICE (PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2RJ45PRI),  0,      0,      3 },
-       { 0,}                                           /* 0 terminated list. */
-};
-MODULE_DEVICE_TABLE(pci, jsm_pci_tbl);
-
-static struct board_id jsm_Ids[] = {
-       { PCI_DEVICE_NEO_2DB9_PCI_NAME,         2 },
-       { PCI_DEVICE_NEO_2DB9PRI_PCI_NAME,      2 },
-       { PCI_DEVICE_NEO_2RJ45_PCI_NAME,        2 },
-       { PCI_DEVICE_NEO_2RJ45PRI_PCI_NAME,     2 },
-       { NULL,                                 0 }
-};
-
-char *jsm_driver_state_text[] = {
-       "Driver Initialized",
-       "Driver Ready."
-};
-
-static int jsm_finalize_board_init(struct jsm_board *brd)
+static int jsm_probe_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 {
        int rc = 0;
 {
        int rc = 0;
+       struct jsm_board *brd;
+       static int adapter_count = 0;
+       int retval;
 
 
-       jsm_printk(INIT, INFO, &brd->pci_dev, "start\n");
-
-       if (brd->irq) {
-               rc = request_irq(brd->irq, brd->bd_ops->intr, SA_INTERRUPT|SA_SHIRQ, "JSM", brd);
-
-               if (rc) {
-                       printk(KERN_WARNING "Failed to hook IRQ %d\n",brd->irq);
-                       brd->state = BOARD_FAILED;
-                       brd->dpastatus = BD_NOFEP;
-                       rc = -ENODEV;
-               } else
-                       jsm_printk(INIT, INFO, &brd->pci_dev,
-                               "Requested and received usage of IRQ %d\n", brd->irq);
+       rc = pci_enable_device(pdev);
+       if (rc) {
+               dev_err(&pdev->dev, "Device enable FAILED\n");
+               goto out;
        }
        }
-       return rc;
-}
 
 
-/*
- * jsm_found_board()
- *
- * A board has been found, init it.
- */
-static int jsm_found_board(struct pci_dev *pdev, int id)
-{
-       struct jsm_board *brd;
-       int i = 0;
-       int rc = 0;
-       struct list_head *tmp;
-       struct jsm_board *cur_board_entry;
-       unsigned long lock_flags;
-       int adapter_count = 0;
-       int retval;
+       rc = pci_request_regions(pdev, "jsm");
+       if (rc) {
+               dev_err(&pdev->dev, "pci_request_region FAILED\n");
+               goto out_disable_device;
+       }
 
        brd = kmalloc(sizeof(struct jsm_board), GFP_KERNEL);
        if (!brd) {
 
        brd = kmalloc(sizeof(struct jsm_board), GFP_KERNEL);
        if (!brd) {
-               dev_err(&pdev->dev, "memory allocation for board structure failed\n");
-               return -ENOMEM;
+               dev_err(&pdev->dev,
+                       "memory allocation for board structure failed\n");
+               rc = -ENOMEM;
+               goto out_release_regions;
        }
        memset(brd, 0, sizeof(struct jsm_board));
 
        }
        memset(brd, 0, sizeof(struct jsm_board));
 
-       spin_lock_irqsave(&jsm_board_head_lock, lock_flags);
-       list_for_each(tmp, &jsm_board_head) {
-               cur_board_entry =
-                       list_entry(tmp, struct jsm_board,
-                               jsm_board_entry);
-               if (cur_board_entry->boardnum != adapter_count) {
-                       break;
-               }
-               adapter_count++;
-       }
-
-       list_add_tail(&brd->jsm_board_entry, &jsm_board_head);
-       spin_unlock_irqrestore(&jsm_board_head_lock, lock_flags);
-
        /* store the info for the board we've found */
        /* store the info for the board we've found */
-       brd->boardnum = adapter_count;
+       brd->boardnum = adapter_count++;
        brd->pci_dev = pdev;
        brd->pci_dev = pdev;
-       brd->name = jsm_Ids[id].name;
-       brd->maxports = jsm_Ids[id].maxports;
-       brd->dpastatus = BD_NOFEP;
-       init_waitqueue_head(&brd->state_wait);
+       brd->maxports = 2;
 
        spin_lock_init(&brd->bd_lock);
        spin_lock_init(&brd->bd_intr_lock);
 
 
        spin_lock_init(&brd->bd_lock);
        spin_lock_init(&brd->bd_intr_lock);
 
-       brd->state = BOARD_FOUND;
-
-       for (i = 0; i < brd->maxports; i++)
-               brd->channels[i] = NULL;
-
        /* store which revision we have */
        pci_read_config_byte(pdev, PCI_REVISION_ID, &brd->rev);
 
        brd->irq = pdev->irq;
 
        /* store which revision we have */
        pci_read_config_byte(pdev, PCI_REVISION_ID, &brd->rev);
 
        brd->irq = pdev->irq;
 
-       switch(brd->pci_dev->device) {
-
-       case PCI_DEVICE_ID_NEO_2DB9:
-       case PCI_DEVICE_ID_NEO_2DB9PRI:
-       case PCI_DEVICE_ID_NEO_2RJ45:
-       case PCI_DEVICE_ID_NEO_2RJ45PRI:
-
-               /*
-                * This chip is set up 100% when we get to it.
-                * No need to enable global interrupts or anything.
-                */
-               brd->dpatype = T_NEO | T_PCIBUS;
+       jsm_printk(INIT, INFO, &brd->pci_dev,
+               "jsm_found_board - NEO adapter\n");
 
 
-               jsm_printk(INIT, INFO, &brd->pci_dev,
-                       "jsm_found_board - NEO adapter\n");
+       /* get the PCI Base Address Registers */
+       brd->membase    = pci_resource_start(pdev, 0);
+       brd->membase_end = pci_resource_end(pdev, 0);
 
 
-               /* get the PCI Base Address Registers */
-               brd->membase    = pci_resource_start(pdev, 0);
-               brd->membase_end = pci_resource_end(pdev, 0);
+       if (brd->membase & 1)
+               brd->membase &= ~3;
+       else
+               brd->membase &= ~15;
 
 
-               if (brd->membase & 1)
-                       brd->membase &= ~3;
-               else
-                       brd->membase &= ~15;
+       /* Assign the board_ops struct */
+       brd->bd_ops = &jsm_neo_ops;
 
 
-               /* Assign the board_ops struct */
-               brd->bd_ops = &jsm_neo_ops;
+       brd->bd_uart_offset = 0x200;
+       brd->bd_dividend = 921600;
 
 
-               brd->bd_uart_offset = 0x200;
-               brd->bd_dividend = 921600;
-
-               brd->re_map_membase = ioremap(brd->membase, 0x1000);
-               jsm_printk(INIT, INFO, &brd->pci_dev,
-                       "remapped mem: 0x%p\n", brd->re_map_membase);
-               if (!brd->re_map_membase) {
-                       kfree(brd);
-                       dev_err(&pdev->dev, "card has no PCI Memory resources, failing board.\n");
-                       return -ENOMEM;
-               }
-               break;
-
-       default:
-               dev_err(&pdev->dev, "Did not find any compatible Neo or Classic PCI boards in system.\n");
-               kfree(brd);
-               return -ENXIO;
+       brd->re_map_membase = ioremap(brd->membase, 0x1000);
+       if (!brd->re_map_membase) {
+               dev_err(&pdev->dev,
+                       "card has no PCI Memory resources, "
+                       "failing board.\n");
+               rc = -ENOMEM;
+               goto out_kfree_brd;
        }
 
        }
 
-       /*
-        * Do tty device initialization.
-        */
-       rc = jsm_finalize_board_init(brd);
-       if (rc < 0) {
-               dev_err(&pdev->dev, "Can't finalize board init (%d)\n", rc);
-               brd->state = BOARD_FAILED;
-               retval = -ENXIO;
-               goto failed0;
+       rc = request_irq(brd->irq, brd->bd_ops->intr,
+                       SA_INTERRUPT|SA_SHIRQ, "JSM", brd);
+       if (rc) {
+               printk(KERN_WARNING "Failed to hook IRQ %d\n",brd->irq);
+               goto out_iounmap;
        }
 
        rc = jsm_tty_init(brd);
        if (rc < 0) {
                dev_err(&pdev->dev, "Can't init tty devices (%d)\n", rc);
        }
 
        rc = jsm_tty_init(brd);
        if (rc < 0) {
                dev_err(&pdev->dev, "Can't init tty devices (%d)\n", rc);
-               brd->state = BOARD_FAILED;
                retval = -ENXIO;
                retval = -ENXIO;
-               goto failed1;
+               goto out_free_irq;
        }
 
        rc = jsm_uart_port_init(brd);
        if (rc < 0) {
        }
 
        rc = jsm_uart_port_init(brd);
        if (rc < 0) {
+               /* XXX: leaking all resources from jsm_tty_init here! */
                dev_err(&pdev->dev, "Can't init uart port (%d)\n", rc);
                dev_err(&pdev->dev, "Can't init uart port (%d)\n", rc);
-               brd->state = BOARD_FAILED;
                retval = -ENXIO;
                retval = -ENXIO;
-               goto failed1;
+               goto out_free_irq;
        }
 
        }
 
-       brd->state = BOARD_READY;
-       brd->dpastatus = BD_RUNNING;
-
        /* Log the information about the board */
        /* Log the information about the board */
-       dev_info(&pdev->dev, "board %d: %s (rev %d), irq %d\n",adapter_count, brd->name, brd->rev, brd->irq);
+       dev_info(&pdev->dev, "board %d: Digi Neo (rev %d), irq %d\n",
+                       adapter_count, brd->rev, brd->irq);
 
        /*
         * allocate flip buffer for board.
 
        /*
         * allocate flip buffer for board.
@@ -249,156 +156,91 @@ static int jsm_found_board(struct pci_dev *pdev, int id)
         */
        brd->flipbuf = kmalloc(MYFLIPLEN, GFP_KERNEL);
        if (!brd->flipbuf) {
         */
        brd->flipbuf = kmalloc(MYFLIPLEN, GFP_KERNEL);
        if (!brd->flipbuf) {
+               /* XXX: leaking all resources from jsm_tty_init and
+                       jsm_uart_port_init here! */
                dev_err(&pdev->dev, "memory allocation for flipbuf failed\n");
                dev_err(&pdev->dev, "memory allocation for flipbuf failed\n");
-               brd->state = BOARD_FAILED;
                retval = -ENOMEM;
                retval = -ENOMEM;
-               goto failed1;
+               goto out_free_irq;
        }
        memset(brd->flipbuf, 0, MYFLIPLEN);
 
        }
        memset(brd->flipbuf, 0, MYFLIPLEN);
 
-       jsm_create_driver_sysfiles(pdev->dev.driver);
+       pci_set_drvdata(pdev, brd);
 
 
-       wake_up_interruptible(&brd->state_wait);
        return 0;
        return 0;
-failed1:
+ out_free_irq:
        free_irq(brd->irq, brd);
        free_irq(brd->irq, brd);
-failed0:
-       kfree(brd);
+ out_iounmap:
        iounmap(brd->re_map_membase);
        iounmap(brd->re_map_membase);
-       return retval;
-}
-
-/* returns count (>= 0), or negative on error */
-static int jsm_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
-{
-       int rc;
-
-       rc = pci_enable_device(pdev);
-       if (rc) {
-               dev_err(&pdev->dev, "Device enable FAILED\n");
-               return rc;
-       }
-
-       if ((rc = pci_request_regions(pdev, "jsm"))) {
-       dev_err(&pdev->dev, "pci_request_region FAILED\n");
-               pci_disable_device(pdev);
-               return rc;
-       }
-
-       if ((rc = jsm_found_board(pdev, ent->driver_data))) {
-               dev_err(&pdev->dev, "jsm_found_board FAILED\n");
-               pci_release_regions(pdev);
-               pci_disable_device(pdev);
-               return rc;
-       }
+ out_kfree_brd:
+       kfree(brd);
+ out_release_regions:
+       pci_release_regions(pdev);
+ out_disable_device:
+       pci_disable_device(pdev);
+ out:
        return rc;
 }
 
        return rc;
 }
 
-
-/*
- * jsm_cleanup_board()
- *
- * Free all the memory associated with a board
- */
-static void jsm_cleanup_board(struct jsm_board *brd)
+static void jsm_remove_one(struct pci_dev *pdev)
 {
 {
+       struct jsm_board *brd = pci_get_drvdata(pdev);
        int i = 0;
 
        int i = 0;
 
+       jsm_remove_uart_port(brd);
+
        free_irq(brd->irq, brd);
        iounmap(brd->re_map_membase);
 
        /* Free all allocated channels structs */
        for (i = 0; i < brd->maxports; i++) {
                if (brd->channels[i]) {
        free_irq(brd->irq, brd);
        iounmap(brd->re_map_membase);
 
        /* Free all allocated channels structs */
        for (i = 0; i < brd->maxports; i++) {
                if (brd->channels[i]) {
-                       if (brd->channels[i]->ch_rqueue)
-                               kfree(brd->channels[i]->ch_rqueue);
-                       if (brd->channels[i]->ch_equeue)
-                               kfree(brd->channels[i]->ch_equeue);
-                       if (brd->channels[i]->ch_wqueue)
-                               kfree(brd->channels[i]->ch_wqueue);
+                       kfree(brd->channels[i]->ch_rqueue);
+                       kfree(brd->channels[i]->ch_equeue);
+                       kfree(brd->channels[i]->ch_wqueue);
                        kfree(brd->channels[i]);
                }
        }
 
                        kfree(brd->channels[i]);
                }
        }
 
-       pci_release_regions(brd->pci_dev);
-       pci_disable_device(brd->pci_dev);
+       pci_release_regions(pdev);
+       pci_disable_device(pdev);
        kfree(brd->flipbuf);
        kfree(brd);
 }
 
        kfree(brd->flipbuf);
        kfree(brd);
 }
 
-static void jsm_remove_one(struct pci_dev *dev)
-{
-       unsigned long lock_flags;
-       struct list_head *tmp;
-       struct jsm_board *brd;
-
-       spin_lock_irqsave(&jsm_board_head_lock, lock_flags);
-       list_for_each(tmp, &jsm_board_head) {
-               brd = list_entry(tmp, struct jsm_board,
-                                       jsm_board_entry);
-               if ( brd != NULL && brd->pci_dev == dev) {
-                       jsm_remove_uart_port(brd);
-                       jsm_cleanup_board(brd);
-                       list_del(&brd->jsm_board_entry);
-                       break;
-               }
-       }
-       spin_unlock_irqrestore(&jsm_board_head_lock, lock_flags);
-       return;
-}
+static struct pci_device_id jsm_pci_tbl[] = {
+       { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2DB9), 0, 0, 0 },
+       { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2DB9PRI), 0, 0, 1 },
+       { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2RJ45), 0, 0, 2 },
+       { PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_NEO_2RJ45PRI), 0, 0, 3 },
+       { 0, }
+};
+MODULE_DEVICE_TABLE(pci, jsm_pci_tbl);
 
 
-struct pci_driver jsm_driver = {
+static struct pci_driver jsm_driver = {
        .name           = "jsm",
        .name           = "jsm",
-       .probe          = jsm_init_one,
        .id_table       = jsm_pci_tbl,
        .id_table       = jsm_pci_tbl,
+       .probe          = jsm_probe_one,
        .remove         = __devexit_p(jsm_remove_one),
 };
 
        .remove         = __devexit_p(jsm_remove_one),
 };
 
-/*
- * jsm_init_module()
- *
- * Module load.  This is where it all starts.
- */
 static int __init jsm_init_module(void)
 {
 static int __init jsm_init_module(void)
 {
-       int rc = 0;
-
-       printk(KERN_INFO "%s, Digi International Part Number %s\n",
-                       JSM_VERSION, JSM_VERSION);
-
-       /*
-        * Initialize global stuff
-        */
+       int rc;
 
        rc = uart_register_driver(&jsm_uart_driver);
 
        rc = uart_register_driver(&jsm_uart_driver);
-       if (rc < 0) {
-               return rc;
-       }
-
-       rc = pci_register_driver(&jsm_driver);
-       if (rc < 0) {
-               uart_unregister_driver(&jsm_uart_driver);
-               return rc;
+       if (!rc) {
+               rc = pci_register_driver(&jsm_driver);
+               if (rc)
+                       uart_unregister_driver(&jsm_uart_driver);
        }
        }
-       jsm_driver_state = DRIVER_READY;
-
        return rc;
 }
 
        return rc;
 }
 
-module_init(jsm_init_module);
-
-/*
- * jsm_exit_module()
- *
- * Module unload.  This is where it all ends.
- */
 static void __exit jsm_exit_module(void)
 {
 static void __exit jsm_exit_module(void)
 {
-       jsm_remove_driver_sysfiles(&jsm_driver.driver);
-
        pci_unregister_driver(&jsm_driver);
        pci_unregister_driver(&jsm_driver);
-
        uart_unregister_driver(&jsm_uart_driver);
 }
        uart_unregister_driver(&jsm_uart_driver);
 }
+
+module_init(jsm_init_module);
 module_exit(jsm_exit_module);
 module_exit(jsm_exit_module);
-MODULE_LICENSE("GPL");