Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
[safe/jmp/linux-2.6] / drivers / block / cciss.c
index 04036ef..92b1263 100644 (file)
@@ -68,6 +68,12 @@ MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400"
 MODULE_VERSION("3.6.20");
 MODULE_LICENSE("GPL");
 
+static int cciss_allow_hpsa;
+module_param(cciss_allow_hpsa, int, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(cciss_allow_hpsa,
+       "Prevent cciss driver from accessing hardware known to be "
+       " supported by the hpsa driver");
+
 #include "cciss_cmd.h"
 #include "cciss.h"
 #include <linux/cciss_ioctl.h>
@@ -101,8 +107,6 @@ static const struct pci_device_id cciss_pci_device_id[] = {
        {PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSE,     0x103C, 0x3249},
        {PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSE,     0x103C, 0x324A},
        {PCI_VENDOR_ID_HP,     PCI_DEVICE_ID_HP_CISSE,     0x103C, 0x324B},
-       {PCI_VENDOR_ID_HP,     PCI_ANY_ID,      PCI_ANY_ID, PCI_ANY_ID,
-               PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0},
        {0,}
 };
 
@@ -123,8 +127,6 @@ static struct board_type products[] = {
        {0x409D0E11, "Smart Array 6400 EM", &SA5_access},
        {0x40910E11, "Smart Array 6i", &SA5_access},
        {0x3225103C, "Smart Array P600", &SA5_access},
-       {0x3223103C, "Smart Array P800", &SA5_access},
-       {0x3234103C, "Smart Array P400", &SA5_access},
        {0x3235103C, "Smart Array P400i", &SA5_access},
        {0x3211103C, "Smart Array E200i", &SA5_access},
        {0x3212103C, "Smart Array E200", &SA5_access},
@@ -132,6 +134,10 @@ static struct board_type products[] = {
        {0x3214103C, "Smart Array E200i", &SA5_access},
        {0x3215103C, "Smart Array E200i", &SA5_access},
        {0x3237103C, "Smart Array E500", &SA5_access},
+/* controllers below this line are also supported by the hpsa driver. */
+#define HPSA_BOUNDARY 0x3223103C
+       {0x3223103C, "Smart Array P800", &SA5_access},
+       {0x3234103C, "Smart Array P400", &SA5_access},
        {0x323D103C, "Smart Array P700m", &SA5_access},
        {0x3241103C, "Smart Array P212", &SA5_access},
        {0x3243103C, "Smart Array P410", &SA5_access},
@@ -140,7 +146,6 @@ static struct board_type products[] = {
        {0x3249103C, "Smart Array P812", &SA5_access},
        {0x324A103C, "Smart Array P712m", &SA5_access},
        {0x324B103C, "Smart Array P711m", &SA5_access},
-       {0xFFFF103C, "Unknown Smart Array", &SA5_access},
 };
 
 /* How long to wait (in milliseconds) for board to go into simple mode */
@@ -256,6 +261,11 @@ static inline void removeQ(CommandList_struct *c)
 
 #include "cciss_scsi.c"                /* For SCSI tape support */
 
+static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG",
+       "UNKNOWN"
+};
+#define RAID_UNKNOWN (sizeof(raid_label) / sizeof(raid_label[0])-1)
+
 #ifdef CONFIG_PROC_FS
 
 /*
@@ -264,10 +274,6 @@ static inline void removeQ(CommandList_struct *c)
 #define ENG_GIG 1000000000
 #define ENG_GIG_FACTOR (ENG_GIG/512)
 #define ENGAGE_SCSI    "engage scsi"
-static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG",
-       "UNKNOWN"
-};
-#define RAID_UNKNOWN (sizeof(raid_label) / sizeof(raid_label[0])-1)
 
 static struct proc_dir_entry *proc_cciss;
 
@@ -436,7 +442,7 @@ out:
        return err;
 }
 
-static struct file_operations cciss_proc_fops = {
+static const struct file_operations cciss_proc_fops = {
        .owner   = THIS_MODULE,
        .open    = cciss_seq_open,
        .read    = seq_read,
@@ -476,7 +482,7 @@ static ssize_t host_store_rescan(struct device *dev,
 
        return count;
 }
-DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan);
+static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan);
 
 static ssize_t dev_show_unique_id(struct device *dev,
                                 struct device_attribute *attr,
@@ -506,7 +512,7 @@ static ssize_t dev_show_unique_id(struct device *dev,
                                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 DEVICE_ATTR(unique_id, S_IRUGO, dev_show_unique_id, NULL);
 
 static ssize_t dev_show_vendor(struct device *dev,
                               struct device_attribute *attr,
@@ -530,7 +536,7 @@ static ssize_t dev_show_vendor(struct device *dev,
        else
                return snprintf(buf, sizeof(vendor) + 1, "%s\n", drv->vendor);
 }
-DEVICE_ATTR(vendor, S_IRUGO, dev_show_vendor, NULL);
+static DEVICE_ATTR(vendor, S_IRUGO, dev_show_vendor, NULL);
 
 static ssize_t dev_show_model(struct device *dev,
                              struct device_attribute *attr,
@@ -554,7 +560,7 @@ static ssize_t dev_show_model(struct device *dev,
        else
                return snprintf(buf, sizeof(model) + 1, "%s\n", drv->model);
 }
-DEVICE_ATTR(model, S_IRUGO, dev_show_model, NULL);
+static DEVICE_ATTR(model, S_IRUGO, dev_show_model, NULL);
 
 static ssize_t dev_show_rev(struct device *dev,
                            struct device_attribute *attr,
@@ -578,7 +584,7 @@ static ssize_t dev_show_rev(struct device *dev,
        else
                return snprintf(buf, sizeof(rev) + 1, "%s\n", drv->rev);
 }
-DEVICE_ATTR(rev, S_IRUGO, dev_show_rev, NULL);
+static DEVICE_ATTR(rev, S_IRUGO, dev_show_rev, NULL);
 
 static ssize_t cciss_show_lunid(struct device *dev,
                                struct device_attribute *attr, char *buf)
@@ -603,7 +609,7 @@ static ssize_t cciss_show_lunid(struct device *dev,
                lunid[0], lunid[1], lunid[2], lunid[3],
                lunid[4], lunid[5], lunid[6], lunid[7]);
 }
-DEVICE_ATTR(lunid, S_IRUGO, cciss_show_lunid, NULL);
+static DEVICE_ATTR(lunid, S_IRUGO, cciss_show_lunid, NULL);
 
 static ssize_t cciss_show_raid_level(struct device *dev,
                                     struct device_attribute *attr, char *buf)
@@ -626,7 +632,7 @@ static ssize_t cciss_show_raid_level(struct device *dev,
        return snprintf(buf, strlen(raid_label[raid]) + 7, "RAID %s\n",
                        raid_label[raid]);
 }
-DEVICE_ATTR(raid_level, S_IRUGO, cciss_show_raid_level, NULL);
+static DEVICE_ATTR(raid_level, S_IRUGO, cciss_show_raid_level, NULL);
 
 static ssize_t cciss_show_usage_count(struct device *dev,
                                      struct device_attribute *attr, char *buf)
@@ -645,7 +651,7 @@ static ssize_t cciss_show_usage_count(struct device *dev,
        spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
        return snprintf(buf, 20, "%d\n", count);
 }
-DEVICE_ATTR(usage_count, S_IRUGO, cciss_show_usage_count, NULL);
+static DEVICE_ATTR(usage_count, S_IRUGO, cciss_show_usage_count, NULL);
 
 static struct attribute *cciss_host_attrs[] = {
        &dev_attr_rescan.attr,
@@ -656,7 +662,7 @@ static struct attribute_group cciss_host_attr_group = {
        .attrs = cciss_host_attrs,
 };
 
-static struct attribute_group *cciss_host_attr_groups[] = {
+static const struct attribute_group *cciss_host_attr_groups[] = {
        &cciss_host_attr_group,
        NULL
 };
@@ -3753,7 +3759,27 @@ static int __devinit cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
        __u64 cfg_offset;
        __u32 cfg_base_addr;
        __u64 cfg_base_addr_index;
-       int i, err;
+       int i, prod_index, err;
+
+       subsystem_vendor_id = pdev->subsystem_vendor;
+       subsystem_device_id = pdev->subsystem_device;
+       board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) |
+                   subsystem_vendor_id);
+
+       for (i = 0; i < ARRAY_SIZE(products); i++) {
+               /* Stand aside for hpsa driver on request */
+               if (cciss_allow_hpsa && products[i].board_id == HPSA_BOUNDARY)
+                       return -ENODEV;
+               if (board_id == products[i].board_id)
+                       break;
+       }
+       prod_index = i;
+       if (prod_index == ARRAY_SIZE(products)) {
+               dev_warn(&pdev->dev,
+                       "unrecognized board ID: 0x%08lx, ignoring.\n",
+                       (unsigned long) board_id);
+               return -ENODEV;
+       }
 
        /* check to see if controller has been disabled */
        /* BEFORE trying to enable it */
@@ -3777,11 +3803,6 @@ static int __devinit cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
                return err;
        }
 
-       subsystem_vendor_id = pdev->subsystem_vendor;
-       subsystem_device_id = pdev->subsystem_device;
-       board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) |
-                   subsystem_vendor_id);
-
 #ifdef CCISS_DEBUG
        printk("command = %x\n", command);
        printk("irq = %x\n", pdev->irq);
@@ -3867,14 +3888,9 @@ static int __devinit cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
         * leave a little room for ioctl calls.
         */
        c->max_commands = readl(&(c->cfgtable->CmdsOutMax));
-       for (i = 0; i < ARRAY_SIZE(products); i++) {
-               if (board_id == products[i].board_id) {
-                       c->product_name = products[i].product_name;
-                       c->access = *(products[i].access);
-                       c->nr_cmds = c->max_commands - 4;
-                       break;
-               }
-       }
+       c->product_name = products[prod_index].product_name;
+       c->access = *(products[prod_index].access);
+       c->nr_cmds = c->max_commands - 4;
        if ((readb(&c->cfgtable->Signature[0]) != 'C') ||
            (readb(&c->cfgtable->Signature[1]) != 'I') ||
            (readb(&c->cfgtable->Signature[2]) != 'S') ||
@@ -3883,27 +3899,6 @@ static int __devinit cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev)
                err = -ENODEV;
                goto err_out_free_res;
        }
-       /* We didn't find the controller in our list. We know the
-        * signature is valid. If it's an HP device let's try to
-        * bind to the device and fire it up. Otherwise we bail.
-        */
-       if (i == ARRAY_SIZE(products)) {
-               if (subsystem_vendor_id == PCI_VENDOR_ID_HP) {
-                       c->product_name = products[i-1].product_name;
-                       c->access = *(products[i-1].access);
-                       c->nr_cmds = c->max_commands - 4;
-                       printk(KERN_WARNING "cciss: This is an unknown "
-                               "Smart Array controller.\n"
-                               "cciss: Please update to the latest driver "
-                               "available from www.hp.com.\n");
-               } else {
-                       printk(KERN_WARNING "cciss: Sorry, I don't know how"
-                               " to access the Smart Array controller %08lx\n"
-                                       , (unsigned long)board_id);
-                       err = -ENODEV;
-                       goto err_out_free_res;
-               }
-       }
 #ifdef CONFIG_X86
        {
                /* Need to enable prefetch in the SCSI core for 6400 in x86 */
@@ -4253,7 +4248,7 @@ static int __devinit cciss_init_one(struct pci_dev *pdev,
        mutex_init(&hba[i]->busy_shutting_down);
 
        if (cciss_pci_init(hba[i], pdev) != 0)
-               goto clean0;
+               goto clean_no_release_regions;
 
        sprintf(hba[i]->devname, "cciss%d", i);
        hba[i]->ctlr = i;
@@ -4390,13 +4385,14 @@ clean2:
 clean1:
        cciss_destroy_hba_sysfs_entry(hba[i]);
 clean0:
+       pci_release_regions(pdev);
+clean_no_release_regions:
        hba[i]->busy_initializing = 0;
 
        /*
         * Deliberately omit pci_disable_device(): it does something nasty to
         * Smart Array controllers that pci_enable_device does not undo
         */
-       pci_release_regions(pdev);
        pci_set_drvdata(pdev, NULL);
        free_hba(i);
        return -1;