diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/block/cciss.c | 267 | ||||
| -rw-r--r-- | drivers/block/cciss.h | 24 |
2 files changed, 281 insertions, 10 deletions
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index cb43fb3..e7d0095 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -437,6 +437,194 @@ static void __devinit cciss_procinit(int i) } #endif /* CONFIG_PROC_FS */ +#define MAX_PRODUCT_NAME_LEN 19 + +#define to_hba(n) container_of(n, struct ctlr_info, dev) +#define to_drv(n) container_of(n, drive_info_struct, dev) + +static struct device_type cciss_host_type = { + .name = "cciss_host", +}; + +static ssize_t dev_show_unique_id(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + drive_info_struct *drv = to_drv(dev); + struct ctlr_info *h = to_hba(drv->dev.parent); + __u8 sn[16]; + unsigned long flags; + int ret = 0; + + spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); + if (h->busy_configuring) + ret = -EBUSY; + else + memcpy(sn, drv->serial_no, sizeof(sn)); + spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); + + if (ret) + return ret; + else + return snprintf(buf, 16 * 2 + 2, + "%02X%02X%02X%02X%02X%02X%02X%02X" + "%02X%02X%02X%02X%02X%02X%02X%02X\n", + sn[0], sn[1], sn[2], sn[3], + sn[4], sn[5], sn[6], sn[7], + sn[8], sn[9], sn[10], sn[11], + sn[12], sn[13], sn[14], sn[15]); +} +DEVICE_ATTR(unique_id, S_IRUGO, dev_show_unique_id, NULL); + +static ssize_t dev_show_vendor(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + drive_info_struct *drv = to_drv(dev); + struct ctlr_info *h = to_hba(drv->dev.parent); + char vendor[VENDOR_LEN + 1]; + unsigned long flags; + int ret = 0; + + spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); + if (h->busy_configuring) + ret = -EBUSY; + else + memcpy(vendor, drv->vendor, VENDOR_LEN + 1); + spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); + + if (ret) + return ret; + else + return snprintf(buf, sizeof(vendor) + 1, "%s\n", drv->vendor); +} +DEVICE_ATTR(vendor, S_IRUGO, dev_show_vendor, NULL); + +static ssize_t dev_show_model(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + drive_info_struct *drv = to_drv(dev); + struct ctlr_info *h = to_hba(drv->dev.parent); + char model[MODEL_LEN + 1]; + unsigned long flags; + int ret = 0; + + spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); + if (h->busy_configuring) + ret = -EBUSY; + else + memcpy(model, drv->model, MODEL_LEN + 1); + spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); + + if (ret) + return ret; + else + return snprintf(buf, sizeof(model) + 1, "%s\n", drv->model); +} +DEVICE_ATTR(model, S_IRUGO, dev_show_model, NULL); + +static ssize_t dev_show_rev(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + drive_info_struct *drv = to_drv(dev); + struct ctlr_info *h = to_hba(drv->dev.parent); + char rev[REV_LEN + 1]; + unsigned long flags; + int ret = 0; + + spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); + if (h->busy_configuring) + ret = -EBUSY; + else + memcpy(rev, drv->rev, REV_LEN + 1); + spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); + + if (ret) + return ret; + else + return snprintf(buf, sizeof(rev) + 1, "%s\n", drv->rev); +} +DEVICE_ATTR(rev, S_IRUGO, dev_show_rev, NULL); + +static struct attribute *cciss_dev_attrs[] = { + &dev_attr_unique_id.attr, + &dev_attr_model.attr, + &dev_attr_vendor.attr, + &dev_attr_rev.attr, + NULL +}; + +static struct attribute_group cciss_dev_attr_group = { + .attrs = cciss_dev_attrs, +}; + +static struct attribute_group *cciss_dev_attr_groups[] = { + &cciss_dev_attr_group, + NULL +}; + +static struct device_type cciss_dev_type = { + .name = "cciss_device", + .groups = cciss_dev_attr_groups, +}; + +static struct bus_type cciss_bus_type = { + .name = "cciss", +}; + + +/* + * Initialize sysfs entry for each controller. This sets up and registers + * the 'cciss#' directory for each individual controller under + * /sys/bus/pci/devices/<dev>/. + */ +static int cciss_create_hba_sysfs_entry(struct ctlr_info *h) +{ + device_initialize(&h->dev); + h->dev.type = &cciss_host_type; + h->dev.bus = &cciss_bus_type; + dev_set_name(&h->dev, "%s", h->devname); + h->dev.parent = &h->pdev->dev; + + return device_add(&h->dev); +} + +/* + * Remove sysfs entries for an hba. + */ +static void cciss_destroy_hba_sysfs_entry(struct ctlr_info *h) +{ + device_del(&h->dev); +} + +/* + * Initialize sysfs for each logical drive. This sets up and registers + * the 'c#d#' directory for each individual logical drive under + * /sys/bus/pci/devices/<dev/ccis#/. We also create a link from + * /sys/block/cciss!c#d# to this entry. + */ +static int cciss_create_ld_sysfs_entry(struct ctlr_info *h, + drive_info_struct *drv, + int drv_index) +{ + device_initialize(&drv->dev); + drv->dev.type = &cciss_dev_type; + drv->dev.bus = &cciss_bus_type; + dev_set_name(&drv->dev, "c%dd%d", h->ctlr, drv_index); + drv->dev.parent = &h->dev; + return device_add(&drv->dev); +} + +/* + * Remove sysfs entries for a logical drive. + */ +static void cciss_destroy_ld_sysfs_entry(drive_info_struct *drv) +{ + device_del(&drv->dev); +} + /* * For operations that cannot sleep, a command block is allocated at init, * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track @@ -1332,6 +1520,45 @@ static void cciss_softirq_done(struct request *rq) spin_unlock_irqrestore(&h->lock, flags); } +/* This function gets the SCSI vendor, model, and revision of a logical drive + * via the inquiry page 0. Model, vendor, and rev are set to empty strings if + * they cannot be read. + */ +static void cciss_get_device_descr(int ctlr, int logvol, int withirq, + char *vendor, char *model, char *rev) +{ + int rc; + InquiryData_struct *inq_buf; + + *vendor = '\0'; + *model = '\0'; + *rev = '\0'; + + inq_buf = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL); + if (!inq_buf) + return; + + if (withirq) + rc = sendcmd_withirq(CISS_INQUIRY, ctlr, inq_buf, + sizeof(InquiryData_struct), 1, logvol, + 0, TYPE_CMD); + else + rc = sendcmd(CISS_INQUIRY, ctlr, inq_buf, + sizeof(InquiryData_struct), 1, logvol, 0, NULL, + TYPE_CMD); + if (rc == IO_OK) { + memcpy(vendor, &inq_buf->data_byte[8], VENDOR_LEN); + vendor[VENDOR_LEN] = '\0'; + memcpy(model, &inq_buf->data_byte[16], MODEL_LEN); + model[MODEL_LEN] = '\0'; + memcpy(rev, &inq_buf->data_byte[32], REV_LEN); + rev[REV_LEN] = '\0'; + } + + kfree(inq_buf); + return; +} + /* This function gets the serial number of a logical drive via * inquiry page 0x83. Serial no. is 16 bytes. If the serial * number cannot be had, for whatever reason, 16 bytes of 0xff @@ -1372,7 +1599,7 @@ static void cciss_add_disk(ctlr_info_t *h, struct gendisk *disk, disk->first_minor = drv_index << NWD_SHIFT; disk->fops = &cciss_fops; disk->private_data = &h->drv[drv_index]; - disk->driverfs_dev = &h->pdev->dev; + disk->driverfs_dev = &h->drv[drv_index].dev; /* Set up queue information */ blk_queue_bounce_limit(disk->queue, h->pdev->dma_mask); @@ -1463,6 +1690,8 @@ static void cciss_update_drive_info(int ctlr, int drv_index, int first_time) drvinfo->block_size = block_size; drvinfo->nr_blocks = total_size + 1; + cciss_get_device_descr(ctlr, drv_index, 1, drvinfo->vendor, + drvinfo->model, drvinfo->rev); cciss_get_serial_no(ctlr, drv_index, 1, drvinfo->serial_no, sizeof(drvinfo->serial_no)); @@ -1512,6 +1741,9 @@ static void cciss_update_drive_info(int ctlr, int drv_index, int first_time) h->drv[drv_index].cylinders = drvinfo->cylinders; h->drv[drv_index].raid_level = drvinfo->raid_level; memcpy(h->drv[drv_index].serial_no, drvinfo->serial_no, 16); + memcpy(h->drv[drv_index].vendor, drvinfo->vendor, VENDOR_LEN + 1); + memcpy(h->drv[drv_index].model, drvinfo->model, MODEL_LEN + 1); + memcpy(h->drv[drv_index].rev, drvinfo->rev, REV_LEN + 1); ++h->num_luns; disk = h->gendisk[drv_index]; @@ -1586,6 +1818,8 @@ static int cciss_add_gendisk(ctlr_info_t *h, __u32 lunid, int controller_node) } } h->drv[drv_index].LunID = lunid; + if (cciss_create_ld_sysfs_entry(h, &h->drv[drv_index], drv_index)) + goto err_free_disk; /* Don't need to mark this busy because nobody */ /* else knows about this disk yet to contend */ @@ -1593,6 +1827,11 @@ static int cciss_add_gendisk(ctlr_info_t *h, __u32 lunid, int controller_node) h->drv[drv_index].busy_configuring = 0; wmb(); return drv_index; + +err_free_disk: + put_disk(h->gendisk[drv_index]); + h->gendisk[drv_index] = NULL; + return -1; } /* This is for the special case of a controller which @@ -1713,6 +1952,7 @@ static int rebuild_lun_table(ctlr_info_t *h, int first_time) h->drv[i].busy_configuring = 1; spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); return_code = deregister_disk(h, i, 1); + cciss_destroy_ld_sysfs_entry(&h->drv[i]); h->drv[i].busy_configuring = 0; } } @@ -3719,12 +3959,15 @@ static int __devinit cciss_init_one(struct pci_dev *pdev, INIT_HLIST_HEAD(&hba[i]->reqQ); if (cciss_pci_init(hba[i], pdev) != 0) - goto clean1; + goto clean0; sprintf(hba[i]->devname, "cciss%d", i); hba[i]->ctlr = i; hba[i]->pdev = pdev; + if (cciss_create_hba_sysfs_entry(hba[i])) + goto clean0; + /* configure PCI DMA stuff */ if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) dac = 1; @@ -3868,6 +4111,8 @@ clean4: clean2: unregister_blkdev(hba[i]->major, hba[i]->devname); clean1: + cciss_destroy_hba_sysfs_entry(hba[i]); +clean0: hba[i]->busy_initializing = 0; /* cleanup any queues that may have been initialized */ for (j=0; j <= hba[i]->highest_lun; j++){ @@ -3978,6 +4223,7 @@ static void __devexit cciss_remove_one(struct pci_dev *pdev) */ pci_release_regions(pdev); pci_set_drvdata(pdev, NULL); + cciss_destroy_hba_sysfs_entry(hba[i]); free_hba(i); } @@ -3995,6 +4241,8 @@ static struct pci_driver cciss_pci_driver = { */ static int __init cciss_init(void) { + int err; + /* * The hardware requires that commands are aligned on a 64-bit * boundary. Given that we use pci_alloc_consistent() to allocate an @@ -4004,8 +4252,20 @@ static int __init cciss_init(void) printk(KERN_INFO DRIVER_NAME "\n"); + err = bus_register(&cciss_bus_type); + if (err) + return err; + /* Register for our PCI devices */ - return pci_register_driver(&cciss_pci_driver); + err = pci_register_driver(&cciss_pci_driver); + if (err) + goto err_bus_register; + + return 0; + +err_bus_register: + bus_unregister(&cciss_bus_type); + return err; } static void __exit cciss_cleanup(void) @@ -4022,6 +4282,7 @@ static void __exit cciss_cleanup(void) } } remove_proc_entry("driver/cciss", NULL); + bus_unregister(&cciss_bus_type); } static void fail_all_cmds(unsigned long ctlr) diff --git a/drivers/block/cciss.h b/drivers/block/cciss.h index 703e080..dd1926d 100644 --- a/drivers/block/cciss.h +++ b/drivers/block/cciss.h @@ -12,6 +12,10 @@ #define IO_OK 0 #define IO_ERROR 1 +#define VENDOR_LEN 8 +#define MODEL_LEN 16 +#define REV_LEN 4 + struct ctlr_info; typedef struct ctlr_info ctlr_info_t; @@ -34,13 +38,18 @@ typedef struct _drive_info_struct int cylinders; int raid_level; /* set to -1 to indicate that * the drive is not in use/configured - */ - int busy_configuring; /*This is set when the drive is being removed - *to prevent it from being opened or it's queue - *from being started. - */ - __u8 serial_no[16]; /* from inquiry page 0x83, */ - /* not necc. null terminated. */ + */ + int busy_configuring; /* This is set when a drive is being removed + * to prevent it from being opened or it's + * queue from being started. + */ + struct device dev; + __u8 serial_no[16]; /* from inquiry page 0x83, + * not necc. null terminated. + */ + char vendor[VENDOR_LEN + 1]; /* SCSI vendor string */ + char model[MODEL_LEN + 1]; /* SCSI model string */ + char rev[REV_LEN + 1]; /* SCSI revision string */ } drive_info_struct; #ifdef CONFIG_CISS_SCSI_TAPE @@ -123,6 +132,7 @@ struct ctlr_info unsigned char alive; struct completion *rescan_wait; struct task_struct *cciss_scan_thread; + struct device dev; }; /* Defining the diffent access_menthods */ |
