#include <linux/pci.h>
#include <linux/kernel.h>
#include <linux/slab.h>
+#include <linux/smp_lock.h>
#include <linux/delay.h>
#include <linux/major.h>
#include <linux/fs.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/init.h>
+#include <linux/jiffies.h>
#include <linux/hdreg.h>
#include <linux/spinlock.h>
#include <linux/compat.h>
-#include <linux/blktrace_api.h>
+#include <linux/mutex.h>
#include <asm/uaccess.h>
#include <asm/io.h>
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>
{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,}
};
{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},
{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},
{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 */
static ctlr_info_t *hba[MAX_CTLR];
+static struct task_struct *cciss_scan_thread;
+static DEFINE_MUTEX(scan_mutex);
+static LIST_HEAD(scan_q);
+
static void do_cciss_request(struct request_queue *q);
static irqreturn_t do_cciss_intr(int irq, void *dev_id);
static int cciss_open(struct block_device *bdev, fmode_t mode);
static int cciss_getgeo(struct block_device *bdev, struct hd_geometry *geo);
static int cciss_revalidate(struct gendisk *disk);
-static int rebuild_lun_table(ctlr_info_t *h, int first_time);
+static int rebuild_lun_table(ctlr_info_t *h, int first_time, int via_ioctl);
static int deregister_disk(ctlr_info_t *h, int drv_index,
- int clear_all);
+ int clear_all, int via_ioctl);
-static void cciss_read_capacity(int ctlr, int logvol, int withirq,
+static void cciss_read_capacity(int ctlr, int logvol,
sector_t *total_size, unsigned int *block_size);
-static void cciss_read_capacity_16(int ctlr, int logvol, int withirq,
+static void cciss_read_capacity_16(int ctlr, int logvol,
sector_t *total_size, unsigned int *block_size);
static void cciss_geometry_inquiry(int ctlr, int logvol,
- int withirq, sector_t total_size,
+ sector_t total_size,
unsigned int block_size, InquiryData_struct *inq_buff,
drive_info_struct *drv);
static void __devinit cciss_interrupt_mode(ctlr_info_t *, struct pci_dev *,
__u32);
static void start_io(ctlr_info_t *h);
-static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size,
- unsigned int use_unit_num, unsigned int log_unit,
- __u8 page_code, unsigned char *scsi3addr, int cmd_type);
static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size,
- unsigned int use_unit_num, unsigned int log_unit,
- __u8 page_code, int cmd_type);
+ __u8 page_code, unsigned char scsi3addr[],
+ int cmd_type);
+static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c,
+ int attempt_retry);
+static int process_sendcmd_error(ctlr_info_t *h, CommandList_struct *c);
static void fail_all_cmds(unsigned long ctlr);
+static int add_to_scan_list(struct ctlr_info *h);
static int scan_thread(void *data);
static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c);
+static void cciss_hba_release(struct device *dev);
+static void cciss_device_release(struct device *dev);
+static void cciss_free_gendisk(ctlr_info_t *h, int drv_index);
+static void cciss_free_drive_info(ctlr_info_t *h, int drv_index);
#ifdef CONFIG_PROC_FS
static void cciss_procinit(int i);
unsigned, unsigned long);
#endif
-static struct block_device_operations cciss_fops = {
+static const struct block_device_operations cciss_fops = {
.owner = THIS_MODULE,
.open = cciss_open,
.release = cciss_release,
static inline void removeQ(CommandList_struct *c)
{
- if (WARN_ON(hlist_unhashed(&c->list)))
+ /*
+ * After kexec/dump some commands might still
+ * be in flight, which the firmware will try
+ * to complete. Resetting the firmware doesn't work
+ * with old fw revisions, so we have to mark
+ * them off as 'stale' to prevent the driver from
+ * falling over.
+ */
+ if (WARN_ON(hlist_unhashed(&c->list))) {
+ c->cmd_type = CMD_MSG_STALE;
return;
+ }
hlist_del_init(&c->list);
}
#include "cciss_scsi.c" /* For SCSI tape support */
-#define RAID_UNKNOWN 6
+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
#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"
-};
static struct proc_dir_entry *proc_cciss;
ctlr_info_t *h = seq->private;
unsigned ctlr = h->ctlr;
loff_t *pos = v;
- drive_info_struct *drv = &h->drv[*pos];
+ drive_info_struct *drv = h->drv[*pos];
if (*pos > h->highest_lun)
return 0;
+ if (drv == NULL) /* it's possible for h->drv[] to have holes. */
+ return 0;
+
if (drv->heads == 0)
return 0;
vol_sz_frac *= 100;
sector_div(vol_sz_frac, ENG_GIG_FACTOR);
- if (drv->raid_level > 5)
+ if (drv->raid_level < 0 || drv->raid_level > RAID_UNKNOWN)
drv->raid_level = RAID_UNKNOWN;
seq_printf(seq, "cciss/c%dd%d:"
"\t%4u.%02uGB\tRAID %s\n",
h->busy_configuring = 0;
}
-static struct seq_operations cciss_seq_ops = {
+static const struct seq_operations cciss_seq_ops = {
.start = cciss_seq_start,
.show = cciss_seq_show,
.next = cciss_seq_next,
if (strncmp(ENGAGE_SCSI, buffer, sizeof ENGAGE_SCSI - 1) == 0) {
struct seq_file *seq = file->private_data;
ctlr_info_t *h = seq->private;
- int rc;
- rc = cciss_engage_scsi(h->ctlr);
- if (rc != 0)
- err = -rc;
- else
+ err = cciss_engage_scsi(h->ctlr);
+ if (err == 0)
err = length;
} else
#endif /* CONFIG_CISS_SCSI_TAPE */
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,
}
#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 ssize_t host_store_rescan(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ctlr_info *h = to_hba(dev);
+
+ add_to_scan_list(h);
+ wake_up_process(cciss_scan_thread);
+ wait_for_completion_interruptible(&h->scan_wait);
+
+ return count;
+}
+static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan);
+
+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]);
+}
+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,
+ 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);
+}
+static 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);
+}
+static 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);
+}
+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)
+{
+ drive_info_struct *drv = to_drv(dev);
+ struct ctlr_info *h = to_hba(drv->dev.parent);
+ unsigned long flags;
+ unsigned char lunid[8];
+
+ spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
+ if (h->busy_configuring) {
+ spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
+ return -EBUSY;
+ }
+ if (!drv->heads) {
+ spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
+ return -ENOTTY;
+ }
+ memcpy(lunid, drv->LunID, sizeof(lunid));
+ spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
+ return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
+ lunid[0], lunid[1], lunid[2], lunid[3],
+ lunid[4], lunid[5], lunid[6], lunid[7]);
+}
+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)
+{
+ drive_info_struct *drv = to_drv(dev);
+ struct ctlr_info *h = to_hba(drv->dev.parent);
+ int raid;
+ unsigned long flags;
+
+ spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
+ if (h->busy_configuring) {
+ spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
+ return -EBUSY;
+ }
+ raid = drv->raid_level;
+ spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
+ if (raid < 0 || raid > RAID_UNKNOWN)
+ raid = RAID_UNKNOWN;
+
+ return snprintf(buf, strlen(raid_label[raid]) + 7, "RAID %s\n",
+ raid_label[raid]);
+}
+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)
+{
+ drive_info_struct *drv = to_drv(dev);
+ struct ctlr_info *h = to_hba(drv->dev.parent);
+ unsigned long flags;
+ int count;
+
+ spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
+ if (h->busy_configuring) {
+ spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
+ return -EBUSY;
+ }
+ count = drv->usage_count;
+ spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
+ return snprintf(buf, 20, "%d\n", count);
+}
+static DEVICE_ATTR(usage_count, S_IRUGO, cciss_show_usage_count, NULL);
+
+static struct attribute *cciss_host_attrs[] = {
+ &dev_attr_rescan.attr,
+ NULL
+};
+
+static struct attribute_group cciss_host_attr_group = {
+ .attrs = cciss_host_attrs,
+};
+
+static const struct attribute_group *cciss_host_attr_groups[] = {
+ &cciss_host_attr_group,
+ NULL
+};
+
+static struct device_type cciss_host_type = {
+ .name = "cciss_host",
+ .groups = cciss_host_attr_groups,
+ .release = cciss_hba_release,
+};
+
+static struct attribute *cciss_dev_attrs[] = {
+ &dev_attr_unique_id.attr,
+ &dev_attr_model.attr,
+ &dev_attr_vendor.attr,
+ &dev_attr_rev.attr,
+ &dev_attr_lunid.attr,
+ &dev_attr_raid_level.attr,
+ &dev_attr_usage_count.attr,
+ NULL
+};
+
+static struct attribute_group cciss_dev_attr_group = {
+ .attrs = cciss_dev_attrs,
+};
+
+static const 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,
+ .release = cciss_device_release,
+};
+
+static struct bus_type cciss_bus_type = {
+ .name = "cciss",
+};
+
+/*
+ * cciss_hba_release is called when the reference count
+ * of h->dev goes to zero.
+ */
+static void cciss_hba_release(struct device *dev)
+{
+ /*
+ * nothing to do, but need this to avoid a warning
+ * about not having a release handler from lib/kref.c.
+ */
+}
+
+/*
+ * 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);
+ put_device(&h->dev); /* final put. */
+}
+
+/* cciss_device_release is called when the reference count
+ * of h->drv[x]dev goes to zero.
+ */
+static void cciss_device_release(struct device *dev)
+{
+ drive_info_struct *drv = to_drv(dev);
+ kfree(drv);
+}
+
+/*
+ * 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 long cciss_create_ld_sysfs_entry(struct ctlr_info *h,
+ int drv_index)
+{
+ struct device *dev;
+
+ if (h->drv[drv_index]->device_initialized)
+ return 0;
+
+ dev = &h->drv[drv_index]->dev;
+ device_initialize(dev);
+ dev->type = &cciss_dev_type;
+ dev->bus = &cciss_bus_type;
+ dev_set_name(dev, "c%dd%d", h->ctlr, drv_index);
+ dev->parent = &h->dev;
+ h->drv[drv_index]->device_initialized = 1;
+ return device_add(dev);
+}
+
+/*
+ * Remove sysfs entries for a logical drive.
+ */
+static void cciss_destroy_ld_sysfs_entry(struct ctlr_info *h, int drv_index,
+ int ctlr_exiting)
+{
+ struct device *dev = &h->drv[drv_index]->dev;
+
+ /* special case for c*d0, we only destroy it on controller exit */
+ if (drv_index == 0 && !ctlr_exiting)
+ return;
+
+ device_del(dev);
+ put_device(dev); /* the "final" put. */
+ h->drv[drv_index] = NULL;
+}
+
/*
* 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
printk(KERN_DEBUG "cciss_open %s\n", bdev->bd_disk->disk_name);
#endif /* CCISS_DEBUG */
- if (host->busy_initializing || drv->busy_configuring)
+ if (drv->busy_configuring)
return -EBUSY;
/*
* Root is allowed to open raw volume zero even if it's not configured
if (MINOR(bdev->bd_dev) & 0x0f) {
return -ENXIO;
/* if it is, make sure we have a LUN ID */
- } else if (drv->LunID == 0) {
+ } else if (memcmp(drv->LunID, CTLR_LUNID,
+ sizeof(drv->LunID))) {
return -ENXIO;
}
}
case CCISS_DEREGDISK:
case CCISS_REGNEWD:
case CCISS_REVALIDVOLS:
- return rebuild_lun_table(host, 0);
+ return rebuild_lun_table(host, 0, 1);
case CCISS_GETLUNINFO:{
LogvolInfo_struct luninfo;
- luninfo.LunID = drv->LunID;
+ memcpy(&luninfo.LunID, drv->LunID,
+ sizeof(luninfo.LunID));
luninfo.num_opens = drv->usage_count;
luninfo.num_parts = 0;
if (copy_to_user(argp, &luninfo,
kfree(buff);
return -ENOMEM;
}
- // Fill in the command type
+ /* Fill in the command type */
c->cmd_type = CMD_IOCTL_PEND;
- // Fill in Command Header
- c->Header.ReplyQueue = 0; // unused in simple mode
- if (iocommand.buf_size > 0) // buffer to fill
+ /* Fill in Command Header */
+ c->Header.ReplyQueue = 0; /* unused in simple mode */
+ if (iocommand.buf_size > 0) /* buffer to fill */
{
c->Header.SGList = 1;
c->Header.SGTotal = 1;
- } else // no buffers to fill
+ } else /* no buffers to fill */
{
c->Header.SGList = 0;
c->Header.SGTotal = 0;
}
c->Header.LUN = iocommand.LUN_info;
- c->Header.Tag.lower = c->busaddr; // use the kernel address the cmd block for tag
+ /* use the kernel address the cmd block for tag */
+ c->Header.Tag.lower = c->busaddr;
- // Fill in Request block
+ /* Fill in Request block */
c->Request = iocommand.Request;
- // Fill in the scatter gather information
+ /* Fill in the scatter gather information */
if (iocommand.buf_size > 0) {
temp64.val = pci_map_single(host->pdev, buff,
iocommand.buf_size,
c->SG[0].Addr.lower = temp64.val32.lower;
c->SG[0].Addr.upper = temp64.val32.upper;
c->SG[0].Len = iocommand.buf_size;
- c->SG[0].Ext = 0; // we are not chaining
+ c->SG[0].Ext = 0; /* we are not chaining */
}
c->waiting = &wait;
/* make sure the disk has been added and the drive is real
* because this can be called from the middle of init_one.
*/
- if (!(h->drv[curr_queue].queue) || !(h->drv[curr_queue].heads))
+ if (!h->drv[curr_queue])
+ continue;
+ if (!(h->drv[curr_queue]->queue) ||
+ !(h->drv[curr_queue]->heads))
continue;
blk_start_queue(h->gendisk[curr_queue]->queue);
{
CommandList_struct *cmd = rq->completion_data;
ctlr_info_t *h = hba[cmd->ctlr];
- unsigned int nr_bytes;
+ SGDescriptor_struct *curr_sg = cmd->SG;
unsigned long flags;
u64bit temp64;
int i, ddir;
+ int sg_index = 0;
if (cmd->Request.Type.Direction == XFER_READ)
ddir = PCI_DMA_FROMDEVICE;
/* command did not need to be retried */
/* unmap the DMA mapping for all the scatter gather elements */
for (i = 0; i < cmd->Header.SGList; i++) {
- temp64.val32.lower = cmd->SG[i].Addr.lower;
- temp64.val32.upper = cmd->SG[i].Addr.upper;
- pci_unmap_page(h->pdev, temp64.val, cmd->SG[i].Len, ddir);
+ if (curr_sg[sg_index].Ext == CCISS_SG_CHAIN) {
+ temp64.val32.lower = cmd->SG[i].Addr.lower;
+ temp64.val32.upper = cmd->SG[i].Addr.upper;
+ pci_dma_sync_single_for_cpu(h->pdev, temp64.val,
+ cmd->SG[i].Len, ddir);
+ pci_unmap_single(h->pdev, temp64.val,
+ cmd->SG[i].Len, ddir);
+ /* Point to the next block */
+ curr_sg = h->cmd_sg_list[cmd->cmdindex]->sgchain;
+ sg_index = 0;
+ }
+ temp64.val32.lower = curr_sg[sg_index].Addr.lower;
+ temp64.val32.upper = curr_sg[sg_index].Addr.upper;
+ pci_unmap_page(h->pdev, temp64.val, curr_sg[sg_index].Len,
+ ddir);
+ ++sg_index;
}
#ifdef CCISS_DEBUG
printk("Done with %p\n", rq);
#endif /* CCISS_DEBUG */
- /*
- * Store the full size and set the residual count for pc requests
- */
- nr_bytes = blk_rq_bytes(rq);
+ /* set the residual count for pc requests */
if (blk_pc_request(rq))
- rq->data_len = cmd->err_info->ResidualCnt;
+ rq->resid_len = cmd->err_info->ResidualCnt;
- if (blk_end_request(rq, (rq->errors == 0) ? 0 : -EIO, nr_bytes))
- BUG();
+ blk_end_request_all(rq, (rq->errors == 0) ? 0 : -EIO);
spin_lock_irqsave(&h->lock, flags);
cmd_free(h, cmd, 1);
spin_unlock_irqrestore(&h->lock, flags);
}
+static inline void log_unit_to_scsi3addr(ctlr_info_t *h,
+ unsigned char scsi3addr[], uint32_t log_unit)
+{
+ memcpy(scsi3addr, h->drv[log_unit]->LunID,
+ sizeof(h->drv[log_unit]->LunID));
+}
+
+/* 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,
+ char *vendor, char *model, char *rev)
+{
+ int rc;
+ InquiryData_struct *inq_buf;
+ unsigned char scsi3addr[8];
+
+ *vendor = '\0';
+ *model = '\0';
+ *rev = '\0';
+
+ inq_buf = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL);
+ if (!inq_buf)
+ return;
+
+ log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol);
+ rc = sendcmd_withirq(CISS_INQUIRY, ctlr, inq_buf, sizeof(*inq_buf), 0,
+ scsi3addr, 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
* are returned instead.
*/
-static void cciss_get_serial_no(int ctlr, int logvol, int withirq,
+static void cciss_get_serial_no(int ctlr, int logvol,
unsigned char *serial_no, int buflen)
{
#define PAGE_83_INQ_BYTES 64
int rc;
unsigned char *buf;
+ unsigned char scsi3addr[8];
if (buflen > 16)
buflen = 16;
if (!buf)
return;
memset(serial_no, 0, buflen);
- if (withirq)
- rc = sendcmd_withirq(CISS_INQUIRY, ctlr, buf,
- PAGE_83_INQ_BYTES, 1, logvol, 0x83, TYPE_CMD);
- else
- rc = sendcmd(CISS_INQUIRY, ctlr, buf,
- PAGE_83_INQ_BYTES, 1, logvol, 0x83, NULL, TYPE_CMD);
+ log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol);
+ rc = sendcmd_withirq(CISS_INQUIRY, ctlr, buf,
+ PAGE_83_INQ_BYTES, 0x83, scsi3addr, TYPE_CMD);
if (rc == IO_OK)
memcpy(serial_no, &buf[8], buflen);
kfree(buf);
return;
}
-static void cciss_add_disk(ctlr_info_t *h, struct gendisk *disk,
+/*
+ * cciss_add_disk sets up the block device queue for a logical drive
+ */
+static int cciss_add_disk(ctlr_info_t *h, struct gendisk *disk,
int drv_index)
{
disk->queue = blk_init_queue(do_cciss_request, &h->lock);
+ if (!disk->queue)
+ goto init_queue_failure;
sprintf(disk->disk_name, "cciss/c%dd%d", h->ctlr, drv_index);
disk->major = h->major;
disk->first_minor = drv_index << NWD_SHIFT;
disk->fops = &cciss_fops;
- disk->private_data = &h->drv[drv_index];
- disk->driverfs_dev = &h->pdev->dev;
+ if (cciss_create_ld_sysfs_entry(h, drv_index))
+ goto cleanup_queue;
+ disk->private_data = h->drv[drv_index];
+ disk->driverfs_dev = &h->drv[drv_index]->dev;
/* Set up queue information */
blk_queue_bounce_limit(disk->queue, h->pdev->dma_mask);
/* This is a hardware imposed limit. */
- blk_queue_max_hw_segments(disk->queue, MAXSGENTRIES);
+ blk_queue_max_hw_segments(disk->queue, h->maxsgentries);
/* This is a limit in the driver and could be eliminated. */
- blk_queue_max_phys_segments(disk->queue, MAXSGENTRIES);
+ blk_queue_max_phys_segments(disk->queue, h->maxsgentries);
- blk_queue_max_sectors(disk->queue, h->cciss_max_sectors);
+ blk_queue_max_hw_sectors(disk->queue, h->cciss_max_sectors);
blk_queue_softirq_done(disk->queue, cciss_softirq_done);
disk->queue->queuedata = h;
- blk_queue_hardsect_size(disk->queue,
- h->drv[drv_index].block_size);
+ blk_queue_logical_block_size(disk->queue,
+ h->drv[drv_index]->block_size);
/* Make sure all queue data is written out before */
- /* setting h->drv[drv_index].queue, as setting this */
+ /* setting h->drv[drv_index]->queue, as setting this */
/* allows the interrupt handler to start the queue */
wmb();
- h->drv[drv_index].queue = disk->queue;
+ h->drv[drv_index]->queue = disk->queue;
add_disk(disk);
+ return 0;
+
+cleanup_queue:
+ blk_cleanup_queue(disk->queue);
+ disk->queue = NULL;
+init_queue_failure:
+ return -1;
}
/* This function will check the usage_count of the drive to be updated/added.
* is also the controller node. Any changes to disk 0 will show up on
* the next reboot.
*/
-static void cciss_update_drive_info(int ctlr, int drv_index, int first_time)
+static void cciss_update_drive_info(int ctlr, int drv_index, int first_time,
+ int via_ioctl)
{
ctlr_info_t *h = hba[ctlr];
struct gendisk *disk;
unsigned long flags = 0;
int ret = 0;
drive_info_struct *drvinfo;
- int was_only_controller_node;
/* Get information about the disk and modify the driver structure */
inq_buff = kmalloc(sizeof(InquiryData_struct), GFP_KERNEL);
- drvinfo = kmalloc(sizeof(*drvinfo), GFP_KERNEL);
+ drvinfo = kzalloc(sizeof(*drvinfo), GFP_KERNEL);
if (inq_buff == NULL || drvinfo == NULL)
goto mem_msg;
- /* See if we're trying to update the "controller node"
- * this will happen the when the first logical drive gets
- * created by ACU.
- */
- was_only_controller_node = (drv_index == 0 &&
- h->drv[0].raid_level == -1);
-
/* testing to see if 16-byte CDBs are already being used */
if (h->cciss_read == CCISS_READ_16) {
- cciss_read_capacity_16(h->ctlr, drv_index, 1,
+ cciss_read_capacity_16(h->ctlr, drv_index,
&total_size, &block_size);
} else {
- cciss_read_capacity(ctlr, drv_index, 1,
- &total_size, &block_size);
-
+ cciss_read_capacity(ctlr, drv_index, &total_size, &block_size);
/* if read_capacity returns all F's this volume is >2TB */
/* in size so we switch to 16-byte CDB's for all */
/* read/write ops */
if (total_size == 0xFFFFFFFFULL) {
- cciss_read_capacity_16(ctlr, drv_index, 1,
+ cciss_read_capacity_16(ctlr, drv_index,
&total_size, &block_size);
h->cciss_read = CCISS_READ_16;
h->cciss_write = CCISS_WRITE_16;
}
}
- cciss_geometry_inquiry(ctlr, drv_index, 1, total_size, block_size,
+ cciss_geometry_inquiry(ctlr, drv_index, total_size, block_size,
inq_buff, drvinfo);
drvinfo->block_size = block_size;
drvinfo->nr_blocks = total_size + 1;
- cciss_get_serial_no(ctlr, drv_index, 1, drvinfo->serial_no,
+ cciss_get_device_descr(ctlr, drv_index, drvinfo->vendor,
+ drvinfo->model, drvinfo->rev);
+ cciss_get_serial_no(ctlr, drv_index, drvinfo->serial_no,
sizeof(drvinfo->serial_no));
+ /* Save the lunid in case we deregister the disk, below. */
+ memcpy(drvinfo->LunID, h->drv[drv_index]->LunID,
+ sizeof(drvinfo->LunID));
/* Is it the same disk we already know, and nothing's changed? */
- if (h->drv[drv_index].raid_level != -1 &&
+ if (h->drv[drv_index]->raid_level != -1 &&
((memcmp(drvinfo->serial_no,
- h->drv[drv_index].serial_no, 16) == 0) &&
- drvinfo->block_size == h->drv[drv_index].block_size &&
- drvinfo->nr_blocks == h->drv[drv_index].nr_blocks &&
- drvinfo->heads == h->drv[drv_index].heads &&
- drvinfo->sectors == h->drv[drv_index].sectors &&
- drvinfo->cylinders == h->drv[drv_index].cylinders))
+ h->drv[drv_index]->serial_no, 16) == 0) &&
+ drvinfo->block_size == h->drv[drv_index]->block_size &&
+ drvinfo->nr_blocks == h->drv[drv_index]->nr_blocks &&
+ drvinfo->heads == h->drv[drv_index]->heads &&
+ drvinfo->sectors == h->drv[drv_index]->sectors &&
+ drvinfo->cylinders == h->drv[drv_index]->cylinders))
/* The disk is unchanged, nothing to update */
goto freeret;
* If the disk already exists then deregister it before proceeding
* (unless it's the first disk (for the controller node).
*/
- if (h->drv[drv_index].raid_level != -1 && drv_index != 0) {
+ if (h->drv[drv_index]->raid_level != -1 && drv_index != 0) {
printk(KERN_WARNING "disk %d has changed.\n", drv_index);
spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
- h->drv[drv_index].busy_configuring = 1;
+ h->drv[drv_index]->busy_configuring = 1;
spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
- /* deregister_disk sets h->drv[drv_index].queue = NULL
+ /* deregister_disk sets h->drv[drv_index]->queue = NULL
* which keeps the interrupt handler from starting
* the queue.
*/
- ret = deregister_disk(h, drv_index, 0);
- h->drv[drv_index].busy_configuring = 0;
+ ret = deregister_disk(h, drv_index, 0, via_ioctl);
}
/* If the disk is in use return */
goto freeret;
/* Save the new information from cciss_geometry_inquiry
- * and serial number inquiry.
+ * and serial number inquiry. If the disk was deregistered
+ * above, then h->drv[drv_index] will be NULL.
*/
- h->drv[drv_index].block_size = drvinfo->block_size;
- h->drv[drv_index].nr_blocks = drvinfo->nr_blocks;
- h->drv[drv_index].heads = drvinfo->heads;
- h->drv[drv_index].sectors = drvinfo->sectors;
- 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);
+ if (h->drv[drv_index] == NULL) {
+ drvinfo->device_initialized = 0;
+ h->drv[drv_index] = drvinfo;
+ drvinfo = NULL; /* so it won't be freed below. */
+ } else {
+ /* special case for cxd0 */
+ h->drv[drv_index]->block_size = drvinfo->block_size;
+ h->drv[drv_index]->nr_blocks = drvinfo->nr_blocks;
+ h->drv[drv_index]->heads = drvinfo->heads;
+ h->drv[drv_index]->sectors = drvinfo->sectors;
+ 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];
- set_capacity(disk, h->drv[drv_index].nr_blocks);
+ set_capacity(disk, h->drv[drv_index]->nr_blocks);
/* If it's not disk 0 (drv_index != 0)
* or if it was disk 0, but there was previously
* (raid_leve == -1) then we want to update the
* logical drive's information.
*/
- if (drv_index || first_time)
- cciss_add_disk(h, disk, drv_index);
+ if (drv_index || first_time) {
+ if (cciss_add_disk(h, disk, drv_index) != 0) {
+ cciss_free_gendisk(h, drv_index);
+ cciss_free_drive_info(h, drv_index);
+ printk(KERN_WARNING "cciss:%d could not update "
+ "disk %d\n", h->ctlr, drv_index);
+ --h->num_luns;
+ }
+ }
freeret:
kfree(inq_buff);
}
/* This function will find the first index of the controllers drive array
- * that has a -1 for the raid_level and will return that index. This is
- * where new drives will be added. If the index to be returned is greater
- * than the highest_lun index for the controller then highest_lun is set
- * to this new index. If there are no available indexes then -1 is returned.
- * "controller_node" is used to know if this is a real logical drive, or just
- * the controller node, which determines if this counts towards highest_lun.
+ * that has a null drv pointer and allocate the drive info struct and
+ * will return that index This is where new drives will be added.
+ * If the index to be returned is greater than the highest_lun index for
+ * the controller then highest_lun is set * to this new index.
+ * If there are no available indexes or if tha allocation fails, then -1
+ * is returned. * "controller_node" is used to know if this is a real
+ * logical drive, or just the controller node, which determines if this
+ * counts towards highest_lun.
*/
-static int cciss_find_free_drive_index(int ctlr, int controller_node)
+static int cciss_alloc_drive_info(ctlr_info_t *h, int controller_node)
{
int i;
+ drive_info_struct *drv;
+ /* Search for an empty slot for our drive info */
for (i = 0; i < CISS_MAX_LUN; i++) {
- if (hba[ctlr]->drv[i].raid_level == -1) {
- if (i > hba[ctlr]->highest_lun)
- if (!controller_node)
- hba[ctlr]->highest_lun = i;
+
+ /* if not cxd0 case, and it's occupied, skip it. */
+ if (h->drv[i] && i != 0)
+ continue;
+ /*
+ * If it's cxd0 case, and drv is alloc'ed already, and a
+ * disk is configured there, skip it.
+ */
+ if (i == 0 && h->drv[i] && h->drv[i]->raid_level != -1)
+ continue;
+
+ /*
+ * We've found an empty slot. Update highest_lun
+ * provided this isn't just the fake cxd0 controller node.
+ */
+ if (i > h->highest_lun && !controller_node)
+ h->highest_lun = i;
+
+ /* If adding a real disk at cxd0, and it's already alloc'ed */
+ if (i == 0 && h->drv[i] != NULL)
return i;
- }
+
+ /*
+ * Found an empty slot, not already alloc'ed. Allocate it.
+ * Mark it with raid_level == -1, so we know it's new later on.
+ */
+ drv = kzalloc(sizeof(*drv), GFP_KERNEL);
+ if (!drv)
+ return -1;
+ drv->raid_level = -1; /* so we know it's new */
+ h->drv[i] = drv;
+ return i;
}
return -1;
}
+static void cciss_free_drive_info(ctlr_info_t *h, int drv_index)
+{
+ kfree(h->drv[drv_index]);
+ h->drv[drv_index] = NULL;
+}
+
+static void cciss_free_gendisk(ctlr_info_t *h, int drv_index)
+{
+ put_disk(h->gendisk[drv_index]);
+ h->gendisk[drv_index] = NULL;
+}
+
/* cciss_add_gendisk finds a free hba[]->drv structure
* and allocates a gendisk if needed, and sets the lunid
* in the drvinfo structure. It returns the index into
* a means to talk to the controller in case no logical
* drives have yet been configured.
*/
-static int cciss_add_gendisk(ctlr_info_t *h, __u32 lunid, int controller_node)
+static int cciss_add_gendisk(ctlr_info_t *h, unsigned char lunid[],
+ int controller_node)
{
int drv_index;
- drv_index = cciss_find_free_drive_index(h->ctlr, controller_node);
+ drv_index = cciss_alloc_drive_info(h, controller_node);
if (drv_index == -1)
return -1;
+
/*Check if the gendisk needs to be allocated */
if (!h->gendisk[drv_index]) {
h->gendisk[drv_index] =
printk(KERN_ERR "cciss%d: could not "
"allocate a new disk %d\n",
h->ctlr, drv_index);
- return -1;
+ goto err_free_drive_info;
}
}
- h->drv[drv_index].LunID = lunid;
-
+ memcpy(h->drv[drv_index]->LunID, lunid,
+ sizeof(h->drv[drv_index]->LunID));
+ if (cciss_create_ld_sysfs_entry(h, drv_index))
+ goto err_free_disk;
/* Don't need to mark this busy because nobody */
/* else knows about this disk yet to contend */
/* for access to it. */
- h->drv[drv_index].busy_configuring = 0;
+ h->drv[drv_index]->busy_configuring = 0;
wmb();
return drv_index;
+
+err_free_disk:
+ cciss_free_gendisk(h, drv_index);
+err_free_drive_info:
+ cciss_free_drive_info(h, drv_index);
+ return -1;
}
/* This is for the special case of a controller which
if (h->gendisk[0] != NULL) /* already did this? Then bail. */
return;
- drv_index = cciss_add_gendisk(h, 0, 1);
- if (drv_index == -1) {
- printk(KERN_WARNING "cciss%d: could not "
- "add disk 0.\n", h->ctlr);
- return;
- }
- h->drv[drv_index].block_size = 512;
- h->drv[drv_index].nr_blocks = 0;
- h->drv[drv_index].heads = 0;
- h->drv[drv_index].sectors = 0;
- h->drv[drv_index].cylinders = 0;
- h->drv[drv_index].raid_level = -1;
- memset(h->drv[drv_index].serial_no, 0, 16);
+ drv_index = cciss_add_gendisk(h, CTLR_LUNID, 1);
+ if (drv_index == -1)
+ goto error;
+ h->drv[drv_index]->block_size = 512;
+ h->drv[drv_index]->nr_blocks = 0;
+ h->drv[drv_index]->heads = 0;
+ h->drv[drv_index]->sectors = 0;
+ h->drv[drv_index]->cylinders = 0;
+ h->drv[drv_index]->raid_level = -1;
+ memset(h->drv[drv_index]->serial_no, 0, 16);
disk = h->gendisk[drv_index];
- cciss_add_disk(h, disk, drv_index);
+ if (cciss_add_disk(h, disk, drv_index) == 0)
+ return;
+ cciss_free_gendisk(h, drv_index);
+ cciss_free_drive_info(h, drv_index);
+error:
+ printk(KERN_WARNING "cciss%d: could not "
+ "add disk 0.\n", h->ctlr);
+ return;
}
/* This function will add and remove logical drives from the Logical
* INPUT
* h = The controller to perform the operations on
*/
-static int rebuild_lun_table(ctlr_info_t *h, int first_time)
+static int rebuild_lun_table(ctlr_info_t *h, int first_time,
+ int via_ioctl)
{
int ctlr = h->ctlr;
int num_luns;
int i;
int drv_found;
int drv_index = 0;
- __u32 lunid = 0;
+ unsigned char lunid[8] = CTLR_LUNID;
unsigned long flags;
if (!capable(CAP_SYS_RAWIO))
goto mem_msg;
return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff,
- sizeof(ReportLunData_struct), 0,
- 0, 0, TYPE_CMD);
+ sizeof(ReportLunData_struct),
+ 0, CTLR_LUNID, TYPE_CMD);
if (return_code == IO_OK)
listlength = be32_to_cpu(*(__be32 *) ld_buff->LUNListLength);
drv_found = 0;
/* skip holes in the array from already deleted drives */
- if (h->drv[i].raid_level == -1)
+ if (h->drv[i] == NULL)
continue;
for (j = 0; j < num_luns; j++) {
- memcpy(&lunid, &ld_buff->LUN[j][0], 4);
- lunid = le32_to_cpu(lunid);
- if (h->drv[i].LunID == lunid) {
+ memcpy(lunid, &ld_buff->LUN[j][0], sizeof(lunid));
+ if (memcmp(h->drv[i]->LunID, lunid,
+ sizeof(lunid)) == 0) {
drv_found = 1;
break;
}
if (!drv_found) {
/* Deregister it from the OS, it's gone. */
spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
- h->drv[i].busy_configuring = 1;
+ h->drv[i]->busy_configuring = 1;
spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
- return_code = deregister_disk(h, i, 1);
- h->drv[i].busy_configuring = 0;
+ return_code = deregister_disk(h, i, 1, via_ioctl);
+ if (h->drv[i] != NULL)
+ h->drv[i]->busy_configuring = 0;
}
}
drv_found = 0;
- memcpy(&lunid, &ld_buff->LUN[i][0], 4);
- lunid = le32_to_cpu(lunid);
-
+ memcpy(lunid, &ld_buff->LUN[i][0], sizeof(lunid));
/* Find if the LUN is already in the drive array
* of the driver. If so then update its info
* if not in use. If it does not exist then find
* the first free index and add it.
*/
for (j = 0; j <= h->highest_lun; j++) {
- if (h->drv[j].raid_level != -1 &&
- h->drv[j].LunID == lunid) {
+ if (h->drv[j] != NULL &&
+ memcmp(h->drv[j]->LunID, lunid,
+ sizeof(h->drv[j]->LunID)) == 0) {
drv_index = j;
drv_found = 1;
break;
if (drv_index == -1)
goto freeret;
}
- cciss_update_drive_info(ctlr, drv_index, first_time);
+ cciss_update_drive_info(ctlr, drv_index, first_time,
+ via_ioctl);
} /* end for */
freeret:
goto freeret;
}
+static void cciss_clear_drive_info(drive_info_struct *drive_info)
+{
+ /* zero out the disk size info */
+ drive_info->nr_blocks = 0;
+ drive_info->block_size = 0;
+ drive_info->heads = 0;
+ drive_info->sectors = 0;
+ drive_info->cylinders = 0;
+ drive_info->raid_level = -1;
+ memset(drive_info->serial_no, 0, sizeof(drive_info->serial_no));
+ memset(drive_info->model, 0, sizeof(drive_info->model));
+ memset(drive_info->rev, 0, sizeof(drive_info->rev));
+ memset(drive_info->vendor, 0, sizeof(drive_info->vendor));
+ /*
+ * don't clear the LUNID though, we need to remember which
+ * one this one is.
+ */
+}
+
/* This function will deregister the disk and it's queue from the
* kernel. It must be called with the controller lock held and the
* drv structures busy_configuring flag set. It's parameters are:
* the disk in preparation for re-adding it. In this case
* the highest_lun should be left unchanged and the LunID
* should not be cleared.
+ * via_ioctl
+ * This indicates whether we've reached this path via ioctl.
+ * This affects the maximum usage count allowed for c0d0 to be messed with.
+ * If this path is reached via ioctl(), then the max_usage_count will
+ * be 1, as the process calling ioctl() has got to have the device open.
+ * If we get here via sysfs, then the max usage count will be zero.
*/
static int deregister_disk(ctlr_info_t *h, int drv_index,
- int clear_all)
+ int clear_all, int via_ioctl)
{
int i;
struct gendisk *disk;
drive_info_struct *drv;
+ int recalculate_highest_lun;
if (!capable(CAP_SYS_RAWIO))
return -EPERM;
- drv = &h->drv[drv_index];
+ drv = h->drv[drv_index];
disk = h->gendisk[drv_index];
/* make sure logical volume is NOT is use */
if (clear_all || (h->gendisk[0] == disk)) {
- if (drv->usage_count > 1)
+ if (drv->usage_count > via_ioctl)
return -EBUSY;
} else if (drv->usage_count > 0)
return -EBUSY;
+ recalculate_highest_lun = (drv == h->drv[h->highest_lun]);
+
/* invalidate the devices and deregister the disk. If it is disk
* zero do not deregister it but just zero out it's values. This
* allows us to delete disk zero but keep the controller registered.
*/
if (h->gendisk[0] != disk) {
struct request_queue *q = disk->queue;
- if (disk->flags & GENHD_FL_UP)
+ if (disk->flags & GENHD_FL_UP) {
+ cciss_destroy_ld_sysfs_entry(h, drv_index, 0);
del_gendisk(disk);
- if (q) {
- blk_cleanup_queue(q);
- /* Set drv->queue to NULL so that we do not try
- * to call blk_start_queue on this queue in the
- * interrupt handler
- */
- drv->queue = NULL;
}
+ if (q)
+ blk_cleanup_queue(q);
/* If clear_all is set then we are deleting the logical
* drive, not just refreshing its info. For drives
* other than disk 0 we will call put_disk. We do not
}
} else {
set_capacity(disk, 0);
+ cciss_clear_drive_info(drv);
}
--h->num_luns;
- /* zero out the disk size info */
- drv->nr_blocks = 0;
- drv->block_size = 0;
- drv->heads = 0;
- drv->sectors = 0;
- drv->cylinders = 0;
- drv->raid_level = -1; /* This can be used as a flag variable to
- * indicate that this element of the drive
- * array is free.
- */
-
- if (clear_all) {
- /* check to see if it was the last disk */
- if (drv == h->drv + h->highest_lun) {
- /* if so, find the new hightest lun */
- int i, newhighest = -1;
- for (i = 0; i <= h->highest_lun; i++) {
- /* if the disk has size > 0, it is available */
- if (h->drv[i].heads)
- newhighest = i;
- }
- h->highest_lun = newhighest;
- }
- drv->LunID = 0;
+ /* if it was the last disk, find the new hightest lun */
+ if (clear_all && recalculate_highest_lun) {
+ int i, newhighest = -1;
+ for (i = 0; i <= h->highest_lun; i++) {
+ /* if the disk has size > 0, it is available */
+ if (h->drv[i] && h->drv[i]->heads)
+ newhighest = i;
+ }
+ h->highest_lun = newhighest;
}
return 0;
}
-static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff, size_t size, unsigned int use_unit_num, /* 0: address the controller,
- 1: address logical volume log_unit,
- 2: periph device address is scsi3addr */
- unsigned int log_unit, __u8 page_code,
- unsigned char *scsi3addr, int cmd_type)
+static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff,
+ size_t size, __u8 page_code, unsigned char *scsi3addr,
+ int cmd_type)
{
ctlr_info_t *h = hba[ctlr];
u64bit buff_dma_handle;
c->Header.SGTotal = 0;
}
c->Header.Tag.lower = c->busaddr;
+ memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8);
c->Request.Type.Type = cmd_type;
if (cmd_type == TYPE_CMD) {
switch (cmd) {
case CISS_INQUIRY:
- /* If the logical unit number is 0 then, this is going
- to controller so It's a physical command
- mode = 0 target = 0. So we have nothing to write.
- otherwise, if use_unit_num == 1,
- mode = 1(volume set addressing) target = LUNID
- otherwise, if use_unit_num == 2,
- mode = 0(periph dev addr) target = scsi3addr */
- if (use_unit_num == 1) {
- c->Header.LUN.LogDev.VolId =
- h->drv[log_unit].LunID;
- c->Header.LUN.LogDev.Mode = 1;
- } else if (use_unit_num == 2) {
- memcpy(c->Header.LUN.LunAddrBytes, scsi3addr,
- 8);
- c->Header.LUN.LogDev.Mode = 0;
- }
/* are we trying to read a vital product page */
if (page_code != 0) {
c->Request.CDB[1] = 0x01;
c->Request.Type.Direction = XFER_READ;
c->Request.Timeout = 0;
c->Request.CDB[0] = cmd;
- c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB
+ c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */
c->Request.CDB[7] = (size >> 16) & 0xFF;
c->Request.CDB[8] = (size >> 8) & 0xFF;
c->Request.CDB[9] = size & 0xFF;
break;
case CCISS_READ_CAPACITY:
- c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID;
- c->Header.LUN.LogDev.Mode = 1;
c->Request.CDBLen = 10;
c->Request.Type.Attribute = ATTR_SIMPLE;
c->Request.Type.Direction = XFER_READ;
c->Request.CDB[0] = cmd;
break;
case CCISS_READ_CAPACITY_16:
- c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID;
- c->Header.LUN.LogDev.Mode = 1;
c->Request.CDBLen = 16;
c->Request.Type.Attribute = ATTR_SIMPLE;
c->Request.Type.Direction = XFER_READ;
c->Request.CDB[0] = BMIC_WRITE;
c->Request.CDB[6] = BMIC_CACHE_FLUSH;
break;
+ case TEST_UNIT_READY:
+ c->Request.CDBLen = 6;
+ c->Request.Type.Attribute = ATTR_SIMPLE;
+ c->Request.Type.Direction = XFER_NONE;
+ c->Request.Timeout = 0;
+ break;
default:
printk(KERN_WARNING
"cciss%d: Unknown Command 0x%c\n", ctlr, cmd);
memcpy(&c->Request.CDB[4], buff, 8);
break;
case 1: /* RESET message */
- c->Request.CDBLen = 12;
+ c->Request.CDBLen = 16;
c->Request.Type.Attribute = ATTR_SIMPLE;
- c->Request.Type.Direction = XFER_WRITE;
+ c->Request.Type.Direction = XFER_NONE;
c->Request.Timeout = 0;
memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB));
c->Request.CDB[0] = cmd; /* reset */
- c->Request.CDB[1] = 0x04; /* reset a LUN */
+ c->Request.CDB[1] = 0x03; /* reset a target */
break;
case 3: /* No-Op message */
c->Request.CDBLen = 1;
return status;
}
-static int sendcmd_withirq(__u8 cmd,
- int ctlr,
- void *buff,
- size_t size,
- unsigned int use_unit_num,
- unsigned int log_unit, __u8 page_code, int cmd_type)
+static int check_target_status(ctlr_info_t *h, CommandList_struct *c)
{
- ctlr_info_t *h = hba[ctlr];
- CommandList_struct *c;
- u64bit buff_dma_handle;
- unsigned long flags;
- int return_status;
- DECLARE_COMPLETION_ONSTACK(wait);
+ switch (c->err_info->ScsiStatus) {
+ case SAM_STAT_GOOD:
+ return IO_OK;
+ case SAM_STAT_CHECK_CONDITION:
+ switch (0xf & c->err_info->SenseInfo[2]) {
+ case 0: return IO_OK; /* no sense */
+ case 1: return IO_OK; /* recovered error */
+ default:
+ if (check_for_unit_attention(h, c))
+ return IO_NEEDS_RETRY;
+ printk(KERN_WARNING "cciss%d: cmd 0x%02x "
+ "check condition, sense key = 0x%02x\n",
+ h->ctlr, c->Request.CDB[0],
+ c->err_info->SenseInfo[2]);
+ }
+ break;
+ default:
+ printk(KERN_WARNING "cciss%d: cmd 0x%02x"
+ "scsi status = 0x%02x\n", h->ctlr,
+ c->Request.CDB[0], c->err_info->ScsiStatus);
+ break;
+ }
+ return IO_ERROR;
+}
- if ((c = cmd_alloc(h, 0)) == NULL)
- return -ENOMEM;
- return_status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
- log_unit, page_code, NULL, cmd_type);
- if (return_status != IO_OK) {
- cmd_free(h, c, 0);
- return return_status;
+static int process_sendcmd_error(ctlr_info_t *h, CommandList_struct *c)
+{
+ int return_status = IO_OK;
+
+ if (c->err_info->CommandStatus == CMD_SUCCESS)
+ return IO_OK;
+
+ switch (c->err_info->CommandStatus) {
+ case CMD_TARGET_STATUS:
+ return_status = check_target_status(h, c);
+ break;
+ case CMD_DATA_UNDERRUN:
+ case CMD_DATA_OVERRUN:
+ /* expected for inquiry and report lun commands */
+ break;
+ case CMD_INVALID:
+ printk(KERN_WARNING "cciss: cmd 0x%02x is "
+ "reported invalid\n", c->Request.CDB[0]);
+ return_status = IO_ERROR;
+ break;
+ case CMD_PROTOCOL_ERR:
+ printk(KERN_WARNING "cciss: cmd 0x%02x has "
+ "protocol error \n", c->Request.CDB[0]);
+ return_status = IO_ERROR;
+ break;
+ case CMD_HARDWARE_ERR:
+ printk(KERN_WARNING "cciss: cmd 0x%02x had "
+ " hardware error\n", c->Request.CDB[0]);
+ return_status = IO_ERROR;
+ break;
+ case CMD_CONNECTION_LOST:
+ printk(KERN_WARNING "cciss: cmd 0x%02x had "
+ "connection lost\n", c->Request.CDB[0]);
+ return_status = IO_ERROR;
+ break;
+ case CMD_ABORTED:
+ printk(KERN_WARNING "cciss: cmd 0x%02x was "
+ "aborted\n", c->Request.CDB[0]);
+ return_status = IO_ERROR;
+ break;
+ case CMD_ABORT_FAILED:
+ printk(KERN_WARNING "cciss: cmd 0x%02x reports "
+ "abort failed\n", c->Request.CDB[0]);
+ return_status = IO_ERROR;
+ break;
+ case CMD_UNSOLICITED_ABORT:
+ printk(KERN_WARNING
+ "cciss%d: unsolicited abort 0x%02x\n", h->ctlr,
+ c->Request.CDB[0]);
+ return_status = IO_NEEDS_RETRY;
+ break;
+ default:
+ printk(KERN_WARNING "cciss: cmd 0x%02x returned "
+ "unknown status %x\n", c->Request.CDB[0],
+ c->err_info->CommandStatus);
+ return_status = IO_ERROR;
}
- resend_cmd2:
- c->waiting = &wait;
+ return return_status;
+}
+static int sendcmd_withirq_core(ctlr_info_t *h, CommandList_struct *c,
+ int attempt_retry)
+{
+ DECLARE_COMPLETION_ONSTACK(wait);
+ u64bit buff_dma_handle;
+ unsigned long flags;
+ int return_status = IO_OK;
+
+resend_cmd2:
+ c->waiting = &wait;
/* Put the request on the tail of the queue and send it */
- spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
+ spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags);
addQ(&h->reqQ, c);
h->Qdepth++;
start_io(h);
- spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
+ spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags);
wait_for_completion(&wait);
- if (c->err_info->CommandStatus != 0) { /* an error has occurred */
- switch (c->err_info->CommandStatus) {
- case CMD_TARGET_STATUS:
- printk(KERN_WARNING "cciss: cmd %p has "
- " completed with errors\n", c);
- if (c->err_info->ScsiStatus) {
- printk(KERN_WARNING "cciss: cmd %p "
- "has SCSI Status = %x\n",
- c, c->err_info->ScsiStatus);
- }
+ if (c->err_info->CommandStatus == 0 || !attempt_retry)
+ goto command_done;
- break;
- case CMD_DATA_UNDERRUN:
- case CMD_DATA_OVERRUN:
- /* expected for inquire and report lun commands */
- break;
- case CMD_INVALID:
- printk(KERN_WARNING "cciss: Cmd %p is "
- "reported invalid\n", c);
- return_status = IO_ERROR;
- break;
- case CMD_PROTOCOL_ERR:
- printk(KERN_WARNING "cciss: cmd %p has "
- "protocol error \n", c);
- return_status = IO_ERROR;
- break;
- case CMD_HARDWARE_ERR:
- printk(KERN_WARNING "cciss: cmd %p had "
- " hardware error\n", c);
- return_status = IO_ERROR;
- break;
- case CMD_CONNECTION_LOST:
- printk(KERN_WARNING "cciss: cmd %p had "
- "connection lost\n", c);
- return_status = IO_ERROR;
- break;
- case CMD_ABORTED:
- printk(KERN_WARNING "cciss: cmd %p was "
- "aborted\n", c);
- return_status = IO_ERROR;
- break;
- case CMD_ABORT_FAILED:
- printk(KERN_WARNING "cciss: cmd %p reports "
- "abort failed\n", c);
- return_status = IO_ERROR;
- break;
- case CMD_UNSOLICITED_ABORT:
- printk(KERN_WARNING
- "cciss%d: unsolicited abort %p\n", ctlr, c);
- if (c->retry_count < MAX_CMD_RETRIES) {
- printk(KERN_WARNING
- "cciss%d: retrying %p\n", ctlr, c);
- c->retry_count++;
- /* erase the old error information */
- memset(c->err_info, 0,
- sizeof(ErrorInfo_struct));
- return_status = IO_OK;
- INIT_COMPLETION(wait);
- goto resend_cmd2;
- }
- return_status = IO_ERROR;
- break;
- default:
- printk(KERN_WARNING "cciss: cmd %p returned "
- "unknown status %x\n", c,
- c->err_info->CommandStatus);
- return_status = IO_ERROR;
- }
+ return_status = process_sendcmd_error(h, c);
+
+ if (return_status == IO_NEEDS_RETRY &&
+ c->retry_count < MAX_CMD_RETRIES) {
+ printk(KERN_WARNING "cciss%d: retrying 0x%02x\n", h->ctlr,
+ c->Request.CDB[0]);
+ c->retry_count++;
+ /* erase the old error information */
+ memset(c->err_info, 0, sizeof(ErrorInfo_struct));
+ return_status = IO_OK;
+ INIT_COMPLETION(wait);
+ goto resend_cmd2;
}
+
+command_done:
/* unlock the buffers from DMA */
buff_dma_handle.val32.lower = c->SG[0].Addr.lower;
buff_dma_handle.val32.upper = c->SG[0].Addr.upper;
pci_unmap_single(h->pdev, (dma_addr_t) buff_dma_handle.val,
c->SG[0].Len, PCI_DMA_BIDIRECTIONAL);
+ return return_status;
+}
+
+static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size,
+ __u8 page_code, unsigned char scsi3addr[],
+ int cmd_type)
+{
+ ctlr_info_t *h = hba[ctlr];
+ CommandList_struct *c;
+ int return_status;
+
+ c = cmd_alloc(h, 0);
+ if (!c)
+ return -ENOMEM;
+ return_status = fill_cmd(c, cmd, ctlr, buff, size, page_code,
+ scsi3addr, cmd_type);
+ if (return_status == IO_OK)
+ return_status = sendcmd_withirq_core(h, c, 1);
+
cmd_free(h, c, 0);
return return_status;
}
static void cciss_geometry_inquiry(int ctlr, int logvol,
- int withirq, sector_t total_size,
+ sector_t total_size,
unsigned int block_size,
InquiryData_struct *inq_buff,
drive_info_struct *drv)
{
int return_code;
unsigned long t;
+ unsigned char scsi3addr[8];
memset(inq_buff, 0, sizeof(InquiryData_struct));
- if (withirq)
- return_code = sendcmd_withirq(CISS_INQUIRY, ctlr,
- inq_buff, sizeof(*inq_buff), 1,
- logvol, 0xC1, TYPE_CMD);
- else
- return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff,
- sizeof(*inq_buff), 1, logvol, 0xC1, NULL,
- TYPE_CMD);
+ log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol);
+ return_code = sendcmd_withirq(CISS_INQUIRY, ctlr, inq_buff,
+ sizeof(*inq_buff), 0xC1, scsi3addr, TYPE_CMD);
if (return_code == IO_OK) {
if (inq_buff->data_byte[8] == 0xFF) {
printk(KERN_WARNING
"cciss: reading geometry failed, volume "
"does not support reading geometry\n");
drv->heads = 255;
- drv->sectors = 32; // Sectors per track
+ drv->sectors = 32; /* Sectors per track */
drv->cylinders = total_size + 1;
drv->raid_level = RAID_UNKNOWN;
} else {
} else { /* Get geometry failed */
printk(KERN_WARNING "cciss: reading geometry failed\n");
}
- printk(KERN_INFO " heads=%d, sectors=%d, cylinders=%d\n\n",
- drv->heads, drv->sectors, drv->cylinders);
}
static void
-cciss_read_capacity(int ctlr, int logvol, int withirq, sector_t *total_size,
+cciss_read_capacity(int ctlr, int logvol, sector_t *total_size,
unsigned int *block_size)
{
ReadCapdata_struct *buf;
int return_code;
+ unsigned char scsi3addr[8];
buf = kzalloc(sizeof(ReadCapdata_struct), GFP_KERNEL);
if (!buf) {
return;
}
- if (withirq)
- return_code = sendcmd_withirq(CCISS_READ_CAPACITY,
- ctlr, buf, sizeof(ReadCapdata_struct),
- 1, logvol, 0, TYPE_CMD);
- else
- return_code = sendcmd(CCISS_READ_CAPACITY,
- ctlr, buf, sizeof(ReadCapdata_struct),
- 1, logvol, 0, NULL, TYPE_CMD);
+ log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol);
+ return_code = sendcmd_withirq(CCISS_READ_CAPACITY, ctlr, buf,
+ sizeof(ReadCapdata_struct), 0, scsi3addr, TYPE_CMD);
if (return_code == IO_OK) {
*total_size = be32_to_cpu(*(__be32 *) buf->total_size);
*block_size = be32_to_cpu(*(__be32 *) buf->block_size);
*total_size = 0;
*block_size = BLOCK_SIZE;
}
- if (*total_size != 0)
- printk(KERN_INFO " blocks= %llu block_size= %d\n",
- (unsigned long long)*total_size+1, *block_size);
kfree(buf);
}
-static void
-cciss_read_capacity_16(int ctlr, int logvol, int withirq, sector_t *total_size, unsigned int *block_size)
+static void cciss_read_capacity_16(int ctlr, int logvol,
+ sector_t *total_size, unsigned int *block_size)
{
ReadCapdata_struct_16 *buf;
int return_code;
+ unsigned char scsi3addr[8];
buf = kzalloc(sizeof(ReadCapdata_struct_16), GFP_KERNEL);
if (!buf) {
return;
}
- if (withirq) {
- return_code = sendcmd_withirq(CCISS_READ_CAPACITY_16,
- ctlr, buf, sizeof(ReadCapdata_struct_16),
- 1, logvol, 0, TYPE_CMD);
- }
- else {
- return_code = sendcmd(CCISS_READ_CAPACITY_16,
- ctlr, buf, sizeof(ReadCapdata_struct_16),
- 1, logvol, 0, NULL, TYPE_CMD);
- }
+ log_unit_to_scsi3addr(hba[ctlr], scsi3addr, logvol);
+ return_code = sendcmd_withirq(CCISS_READ_CAPACITY_16,
+ ctlr, buf, sizeof(ReadCapdata_struct_16),
+ 0, scsi3addr, TYPE_CMD);
if (return_code == IO_OK) {
*total_size = be64_to_cpu(*(__be64 *) buf->total_size);
*block_size = be32_to_cpu(*(__be32 *) buf->block_size);
InquiryData_struct *inq_buff = NULL;
for (logvol = 0; logvol < CISS_MAX_LUN; logvol++) {
- if (h->drv[logvol].LunID == drv->LunID) {
+ if (memcmp(h->drv[logvol]->LunID, drv->LunID,
+ sizeof(drv->LunID)) == 0) {
FOUND = 1;
break;
}
return 1;
}
if (h->cciss_read == CCISS_READ_10) {
- cciss_read_capacity(h->ctlr, logvol, 1,
+ cciss_read_capacity(h->ctlr, logvol,
&total_size, &block_size);
} else {
- cciss_read_capacity_16(h->ctlr, logvol, 1,
+ cciss_read_capacity_16(h->ctlr, logvol,
&total_size, &block_size);
}
- cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size,
+ cciss_geometry_inquiry(h->ctlr, logvol, total_size, block_size,
inq_buff, drv);
- blk_queue_hardsect_size(drv->queue, drv->block_size);
+ blk_queue_logical_block_size(drv->queue, drv->block_size);
set_capacity(disk, drv->nr_blocks);
kfree(inq_buff);
}
/*
- * Wait polling for a command to complete.
- * The memory mapped FIFO is polled for the completion.
- * Used only at init time, interrupts from the HBA are disabled.
- */
-static unsigned long pollcomplete(int ctlr)
-{
- unsigned long done;
- int i;
-
- /* Wait (up to 20 seconds) for a command to complete */
-
- for (i = 20 * HZ; i > 0; i--) {
- done = hba[ctlr]->access.command_completed(hba[ctlr]);
- if (done == FIFO_EMPTY)
- schedule_timeout_uninterruptible(1);
- else
- return done;
- }
- /* Invalid address to tell caller we ran out of time */
- return 1;
-}
-
-static int add_sendcmd_reject(__u8 cmd, int ctlr, unsigned long complete)
-{
- /* We get in here if sendcmd() is polling for completions
- and gets some command back that it wasn't expecting --
- something other than that which it just sent down.
- Ordinarily, that shouldn't happen, but it can happen when
- the scsi tape stuff gets into error handling mode, and
- starts using sendcmd() to try to abort commands and
- reset tape drives. In that case, sendcmd may pick up
- completions of commands that were sent to logical drives
- through the block i/o system, or cciss ioctls completing, etc.
- In that case, we need to save those completions for later
- processing by the interrupt handler.
- */
-
-#ifdef CONFIG_CISS_SCSI_TAPE
- struct sendcmd_reject_list *srl = &hba[ctlr]->scsi_rejects;
-
- /* If it's not the scsi tape stuff doing error handling, (abort */
- /* or reset) then we don't expect anything weird. */
- if (cmd != CCISS_RESET_MSG && cmd != CCISS_ABORT_MSG) {
-#endif
- printk(KERN_WARNING "cciss cciss%d: SendCmd "
- "Invalid command list address returned! (%lx)\n",
- ctlr, complete);
- /* not much we can do. */
-#ifdef CONFIG_CISS_SCSI_TAPE
- return 1;
- }
-
- /* We've sent down an abort or reset, but something else
- has completed */
- if (srl->ncompletions >= (hba[ctlr]->nr_cmds + 2)) {
- /* Uh oh. No room to save it for later... */
- printk(KERN_WARNING "cciss%d: Sendcmd: Invalid command addr, "
- "reject list overflow, command lost!\n", ctlr);
- return 1;
- }
- /* Save it for later */
- srl->complete[srl->ncompletions] = complete;
- srl->ncompletions++;
-#endif
- return 0;
-}
-
-/*
- * Send a command to the controller, and wait for it to complete.
- * Only used at init time.
- */
-static int sendcmd(__u8 cmd, int ctlr, void *buff, size_t size, unsigned int use_unit_num, /* 0: address the controller,
- 1: address logical volume log_unit,
- 2: periph device address is scsi3addr */
- unsigned int log_unit,
- __u8 page_code, unsigned char *scsi3addr, int cmd_type)
-{
- CommandList_struct *c;
- int i;
- unsigned long complete;
- ctlr_info_t *info_p = hba[ctlr];
- u64bit buff_dma_handle;
- int status, done = 0;
-
- if ((c = cmd_alloc(info_p, 1)) == NULL) {
- printk(KERN_WARNING "cciss: unable to get memory");
- return IO_ERROR;
- }
- status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num,
- log_unit, page_code, scsi3addr, cmd_type);
- if (status != IO_OK) {
- cmd_free(info_p, c, 1);
- return status;
- }
- resend_cmd1:
- /*
- * Disable interrupt
- */
-#ifdef CCISS_DEBUG
- printk(KERN_DEBUG "cciss: turning intr off\n");
-#endif /* CCISS_DEBUG */
- info_p->access.set_intr_mask(info_p, CCISS_INTR_OFF);
-
- /* Make sure there is room in the command FIFO */
- /* Actually it should be completely empty at this time */
- /* unless we are in here doing error handling for the scsi */
- /* tape side of the driver. */
- for (i = 200000; i > 0; i--) {
- /* if fifo isn't full go */
- if (!(info_p->access.fifo_full(info_p))) {
-
- break;
- }
- udelay(10);
- printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full,"
- " waiting!\n", ctlr);
- }
- /*
- * Send the cmd
- */
- info_p->access.submit_command(info_p, c);
- done = 0;
- do {
- complete = pollcomplete(ctlr);
-
-#ifdef CCISS_DEBUG
- printk(KERN_DEBUG "cciss: command completed\n");
-#endif /* CCISS_DEBUG */
-
- if (complete == 1) {
- printk(KERN_WARNING
- "cciss cciss%d: SendCmd Timeout out, "
- "No command list address returned!\n", ctlr);
- status = IO_ERROR;
- done = 1;
- break;
- }
-
- /* This will need to change for direct lookup completions */
- if ((complete & CISS_ERROR_BIT)
- && (complete & ~CISS_ERROR_BIT) == c->busaddr) {
- /* if data overrun or underun on Report command
- ignore it
- */
- if (((c->Request.CDB[0] == CISS_REPORT_LOG) ||
- (c->Request.CDB[0] == CISS_REPORT_PHYS) ||
- (c->Request.CDB[0] == CISS_INQUIRY)) &&
- ((c->err_info->CommandStatus ==
- CMD_DATA_OVERRUN) ||
- (c->err_info->CommandStatus == CMD_DATA_UNDERRUN)
- )) {
- complete = c->busaddr;
- } else {
- if (c->err_info->CommandStatus ==
- CMD_UNSOLICITED_ABORT) {
- printk(KERN_WARNING "cciss%d: "
- "unsolicited abort %p\n",
- ctlr, c);
- if (c->retry_count < MAX_CMD_RETRIES) {
- printk(KERN_WARNING
- "cciss%d: retrying %p\n",
- ctlr, c);
- c->retry_count++;
- /* erase the old error */
- /* information */
- memset(c->err_info, 0,
- sizeof
- (ErrorInfo_struct));
- goto resend_cmd1;
- } else {
- printk(KERN_WARNING
- "cciss%d: retried %p too "
- "many times\n", ctlr, c);
- status = IO_ERROR;
- goto cleanup1;
- }
- } else if (c->err_info->CommandStatus ==
- CMD_UNABORTABLE) {
- printk(KERN_WARNING
- "cciss%d: command could not be aborted.\n",
- ctlr);
- status = IO_ERROR;
- goto cleanup1;
- }
- printk(KERN_WARNING "ciss ciss%d: sendcmd"
- " Error %x \n", ctlr,
- c->err_info->CommandStatus);
- printk(KERN_WARNING "ciss ciss%d: sendcmd"
- " offensive info\n"
- " size %x\n num %x value %x\n",
- ctlr,
- c->err_info->MoreErrInfo.Invalid_Cmd.
- offense_size,
- c->err_info->MoreErrInfo.Invalid_Cmd.
- offense_num,
- c->err_info->MoreErrInfo.Invalid_Cmd.
- offense_value);
- status = IO_ERROR;
- goto cleanup1;
- }
- }
- /* This will need changing for direct lookup completions */
- if (complete != c->busaddr) {
- if (add_sendcmd_reject(cmd, ctlr, complete) != 0) {
- BUG(); /* we are pretty much hosed if we get here. */
- }
- continue;
- } else
- done = 1;
- } while (!done);
-
- cleanup1:
- /* unlock the data buffer from DMA */
- buff_dma_handle.val32.lower = c->SG[0].Addr.lower;
- buff_dma_handle.val32.upper = c->SG[0].Addr.upper;
- pci_unmap_single(info_p->pdev, (dma_addr_t) buff_dma_handle.val,
- c->SG[0].Len, PCI_DMA_BIDIRECTIONAL);
-#ifdef CONFIG_CISS_SCSI_TAPE
- /* if we saved some commands for later, process them now. */
- if (info_p->scsi_rejects.ncompletions > 0)
- do_cciss_intr(0, info_p);
-#endif
- cmd_free(info_p, c, 1);
- return status;
-}
-
-/*
* Map (physical) PCI mem into (virtual) kernel space
*/
static void __iomem *remap_pci_mem(ulong base, ulong size)
printk(KERN_WARNING "cciss: cmd %p has"
" completed with data underrun "
"reported\n", cmd);
- cmd->rq->data_len = cmd->err_info->ResidualCnt;
+ cmd->rq->resid_len = cmd->err_info->ResidualCnt;
}
break;
case CMD_DATA_OVERRUN:
int seg;
struct request *creq;
u64bit temp64;
- struct scatterlist tmp_sg[MAXSGENTRIES];
+ struct scatterlist *tmp_sg;
+ SGDescriptor_struct *curr_sg;
drive_info_struct *drv;
int i, dir;
+ int nseg = 0;
+ int sg_index = 0;
+ int chained = 0;
/* We call start_io here in case there is a command waiting on the
* queue that has not been sent.
goto startio;
queue:
- creq = elv_next_request(q);
+ creq = blk_peek_request(q);
if (!creq)
goto startio;
- BUG_ON(creq->nr_phys_segments > MAXSGENTRIES);
+ BUG_ON(creq->nr_phys_segments > h->maxsgentries);
if ((c = cmd_alloc(h, 1)) == NULL)
goto full;
- blkdev_dequeue_request(creq);
+ blk_start_request(creq);
+ tmp_sg = h->scatter_list[c->cmdindex];
spin_unlock_irq(q->queue_lock);
c->cmd_type = CMD_RWREQ;
/* fill in the request */
drv = creq->rq_disk->private_data;
- c->Header.ReplyQueue = 0; // unused in simple mode
+ c->Header.ReplyQueue = 0; /* unused in simple mode */
/* got command from pool, so use the command block index instead */
/* for direct lookups. */
/* The first 2 bits are reserved for controller error reporting. */
c->Header.Tag.lower = (c->cmdindex << 3);
c->Header.Tag.lower |= 0x04; /* flag for direct lookup. */
- c->Header.LUN.LogDev.VolId = drv->LunID;
- c->Header.LUN.LogDev.Mode = 1;
- c->Request.CDBLen = 10; // 12 byte commands not in FW yet;
- c->Request.Type.Type = TYPE_CMD; // It is a command.
+ memcpy(&c->Header.LUN, drv->LunID, sizeof(drv->LunID));
+ c->Request.CDBLen = 10; /* 12 byte commands not in FW yet; */
+ c->Request.Type.Type = TYPE_CMD; /* It is a command. */
c->Request.Type.Attribute = ATTR_SIMPLE;
c->Request.Type.Direction =
(rq_data_dir(creq) == READ) ? XFER_READ : XFER_WRITE;
- c->Request.Timeout = 0; // Don't time out
+ c->Request.Timeout = 0; /* Don't time out */
c->Request.CDB[0] =
(rq_data_dir(creq) == READ) ? h->cciss_read : h->cciss_write;
- start_blk = creq->sector;
+ start_blk = blk_rq_pos(creq);
#ifdef CCISS_DEBUG
- printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n", (int)creq->sector,
- (int)creq->nr_sectors);
+ printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n",
+ (int)blk_rq_pos(creq), (int)blk_rq_sectors(creq));
#endif /* CCISS_DEBUG */
- sg_init_table(tmp_sg, MAXSGENTRIES);
+ sg_init_table(tmp_sg, h->maxsgentries);
seg = blk_rq_map_sg(q, creq, tmp_sg);
/* get the DMA records for the setup */
else
dir = PCI_DMA_TODEVICE;
+ curr_sg = c->SG;
+ sg_index = 0;
+ chained = 0;
+
for (i = 0; i < seg; i++) {
- c->SG[i].Len = tmp_sg[i].length;
+ if (((sg_index+1) == (h->max_cmd_sgentries)) &&
+ !chained && ((seg - i) > 1)) {
+ nseg = seg - i;
+ curr_sg[sg_index].Len = (nseg) *
+ sizeof(SGDescriptor_struct);
+ curr_sg[sg_index].Ext = CCISS_SG_CHAIN;
+
+ /* Point to next chain block. */
+ curr_sg = h->cmd_sg_list[c->cmdindex]->sgchain;
+ sg_index = 0;
+ chained = 1;
+ }
+ curr_sg[sg_index].Len = tmp_sg[i].length;
temp64.val = (__u64) pci_map_page(h->pdev, sg_page(&tmp_sg[i]),
- tmp_sg[i].offset,
- tmp_sg[i].length, dir);
- c->SG[i].Addr.lower = temp64.val32.lower;
- c->SG[i].Addr.upper = temp64.val32.upper;
- c->SG[i].Ext = 0; // we are not chaining
+ tmp_sg[i].offset,
+ tmp_sg[i].length, dir);
+ curr_sg[sg_index].Addr.lower = temp64.val32.lower;
+ curr_sg[sg_index].Addr.upper = temp64.val32.upper;
+ curr_sg[sg_index].Ext = 0; /* we are not chaining */
+
+ ++sg_index;
+ }
+
+ if (chained) {
+ int len;
+ curr_sg = c->SG;
+ sg_index = h->max_cmd_sgentries - 1;
+ len = curr_sg[sg_index].Len;
+ /* Setup pointer to next chain block.
+ * Fill out last element in current chain
+ * block with address of next chain block.
+ */
+ temp64.val = pci_map_single(h->pdev,
+ h->cmd_sg_list[c->cmdindex]->sgchain,
+ len, dir);
+
+ h->cmd_sg_list[c->cmdindex]->sg_chain_dma = temp64.val;
+ curr_sg[sg_index].Addr.lower = temp64.val32.lower;
+ curr_sg[sg_index].Addr.upper = temp64.val32.upper;
+
+ pci_dma_sync_single_for_device(h->pdev,
+ h->cmd_sg_list[c->cmdindex]->sg_chain_dma,
+ len, dir);
}
+
/* track how many SG entries we are using */
if (seg > h->maxSG)
h->maxSG = seg;
#ifdef CCISS_DEBUG
- printk(KERN_DEBUG "cciss: Submitting %lu sectors in %d segments\n",
- creq->nr_sectors, seg);
+ printk(KERN_DEBUG "cciss: Submitting %ld sectors in %d segments "
+ "chained[%d]\n",
+ blk_rq_sectors(creq), seg, chained);
#endif /* CCISS_DEBUG */
- c->Header.SGList = c->Header.SGTotal = seg;
+ c->Header.SGList = c->Header.SGTotal = seg + chained;
+ if (seg > h->max_cmd_sgentries)
+ c->Header.SGList = h->max_cmd_sgentries;
+
if (likely(blk_fs_request(creq))) {
if(h->cciss_read == CCISS_READ_10) {
c->Request.CDB[1] = 0;
- c->Request.CDB[2] = (start_blk >> 24) & 0xff; //MSB
+ c->Request.CDB[2] = (start_blk >> 24) & 0xff; /* MSB */
c->Request.CDB[3] = (start_blk >> 16) & 0xff;
c->Request.CDB[4] = (start_blk >> 8) & 0xff;
c->Request.CDB[5] = start_blk & 0xff;
- c->Request.CDB[6] = 0; // (sect >> 24) & 0xff; MSB
- c->Request.CDB[7] = (creq->nr_sectors >> 8) & 0xff;
- c->Request.CDB[8] = creq->nr_sectors & 0xff;
+ c->Request.CDB[6] = 0; /* (sect >> 24) & 0xff; MSB */
+ c->Request.CDB[7] = (blk_rq_sectors(creq) >> 8) & 0xff;
+ c->Request.CDB[8] = blk_rq_sectors(creq) & 0xff;
c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0;
} else {
u32 upper32 = upper_32_bits(start_blk);
c->Request.CDBLen = 16;
c->Request.CDB[1]= 0;
- c->Request.CDB[2]= (upper32 >> 24) & 0xff; //MSB
+ c->Request.CDB[2]= (upper32 >> 24) & 0xff; /* MSB */
c->Request.CDB[3]= (upper32 >> 16) & 0xff;
c->Request.CDB[4]= (upper32 >> 8) & 0xff;
c->Request.CDB[5]= upper32 & 0xff;
c->Request.CDB[7]= (start_blk >> 16) & 0xff;
c->Request.CDB[8]= (start_blk >> 8) & 0xff;
c->Request.CDB[9]= start_blk & 0xff;
- c->Request.CDB[10]= (creq->nr_sectors >> 24) & 0xff;
- c->Request.CDB[11]= (creq->nr_sectors >> 16) & 0xff;
- c->Request.CDB[12]= (creq->nr_sectors >> 8) & 0xff;
- c->Request.CDB[13]= creq->nr_sectors & 0xff;
+ c->Request.CDB[10]= (blk_rq_sectors(creq) >> 24) & 0xff;
+ c->Request.CDB[11]= (blk_rq_sectors(creq) >> 16) & 0xff;
+ c->Request.CDB[12]= (blk_rq_sectors(creq) >> 8) & 0xff;
+ c->Request.CDB[13]= blk_rq_sectors(creq) & 0xff;
c->Request.CDB[14] = c->Request.CDB[15] = 0;
}
} else if (blk_pc_request(creq)) {
static inline unsigned long get_next_completion(ctlr_info_t *h)
{
-#ifdef CONFIG_CISS_SCSI_TAPE
- /* Any rejects from sendcmd() lying around? Process them first */
- if (h->scsi_rejects.ncompletions == 0)
- return h->access.command_completed(h);
- else {
- struct sendcmd_reject_list *srl;
- int n;
- srl = &h->scsi_rejects;
- n = --srl->ncompletions;
- /* printk("cciss%d: processing saved reject\n", h->ctlr); */
- printk("p");
- return srl->complete[n];
- }
-#else
return h->access.command_completed(h);
-#endif
}
static inline int interrupt_pending(ctlr_info_t *h)
{
-#ifdef CONFIG_CISS_SCSI_TAPE
- return (h->access.intr_pending(h)
- || (h->scsi_rejects.ncompletions > 0));
-#else
return h->access.intr_pending(h);
-#endif
}
static inline long interrupt_not_for_us(ctlr_info_t *h)
{
-#ifdef CONFIG_CISS_SCSI_TAPE
- return (((h->access.intr_pending(h) == 0) ||
- (h->interrupts_enabled == 0))
- && (h->scsi_rejects.ncompletions == 0));
-#else
return (((h->access.intr_pending(h) == 0) ||
(h->interrupts_enabled == 0)));
-#endif
}
static irqreturn_t do_cciss_intr(int irq, void *dev_id)
return IRQ_HANDLED;
}
+/**
+ * add_to_scan_list() - add controller to rescan queue
+ * @h: Pointer to the controller.
+ *
+ * Adds the controller to the rescan queue if not already on the queue.
+ *
+ * returns 1 if added to the queue, 0 if skipped (could be on the
+ * queue already, or the controller could be initializing or shutting
+ * down).
+ **/
+static int add_to_scan_list(struct ctlr_info *h)
+{
+ struct ctlr_info *test_h;
+ int found = 0;
+ int ret = 0;
+
+ if (h->busy_initializing)
+ return 0;
+
+ if (!mutex_trylock(&h->busy_shutting_down))
+ return 0;
+
+ mutex_lock(&scan_mutex);
+ list_for_each_entry(test_h, &scan_q, scan_list) {
+ if (test_h == h) {
+ found = 1;
+ break;
+ }
+ }
+ if (!found && !h->busy_scanning) {
+ INIT_COMPLETION(h->scan_wait);
+ list_add_tail(&h->scan_list, &scan_q);
+ ret = 1;
+ }
+ mutex_unlock(&scan_mutex);
+ mutex_unlock(&h->busy_shutting_down);
+
+ return ret;
+}
+
+/**
+ * remove_from_scan_list() - remove controller from rescan queue
+ * @h: Pointer to the controller.
+ *
+ * Removes the controller from the rescan queue if present. Blocks if
+ * the controller is currently conducting a rescan. The controller
+ * can be in one of three states:
+ * 1. Doesn't need a scan
+ * 2. On the scan list, but not scanning yet (we remove it)
+ * 3. Busy scanning (and not on the list). In this case we want to wait for
+ * the scan to complete to make sure the scanning thread for this
+ * controller is completely idle.
+ **/
+static void remove_from_scan_list(struct ctlr_info *h)
+{
+ struct ctlr_info *test_h, *tmp_h;
+
+ mutex_lock(&scan_mutex);
+ list_for_each_entry_safe(test_h, tmp_h, &scan_q, scan_list) {
+ if (test_h == h) { /* state 2. */
+ list_del(&h->scan_list);
+ complete_all(&h->scan_wait);
+ mutex_unlock(&scan_mutex);
+ return;
+ }
+ }
+ if (h->busy_scanning) { /* state 3. */
+ mutex_unlock(&scan_mutex);
+ wait_for_completion(&h->scan_wait);
+ } else { /* state 1, nothing to do. */
+ mutex_unlock(&scan_mutex);
+ }
+}
+
+/**
+ * scan_thread() - kernel thread used to rescan controllers
+ * @data: Ignored.
+ *
+ * A kernel thread used scan for drive topology changes on
+ * controllers. The thread processes only one controller at a time
+ * using a queue. Controllers are added to the queue using
+ * add_to_scan_list() and removed from the queue either after done
+ * processing or using remove_from_scan_list().
+ *
+ * returns 0.
+ **/
static int scan_thread(void *data)
{
- ctlr_info_t *h = data;
- int rc;
- DECLARE_COMPLETION_ONSTACK(wait);
- h->rescan_wait = &wait;
+ struct ctlr_info *h;
- for (;;) {
- rc = wait_for_completion_interruptible(&wait);
+ while (1) {
+ set_current_state(TASK_INTERRUPTIBLE);
+ schedule();
if (kthread_should_stop())
break;
- if (!rc)
- rebuild_lun_table(h, 0);
+
+ while (1) {
+ mutex_lock(&scan_mutex);
+ if (list_empty(&scan_q)) {
+ mutex_unlock(&scan_mutex);
+ break;
+ }
+
+ h = list_entry(scan_q.next,
+ struct ctlr_info,
+ scan_list);
+ list_del(&h->scan_list);
+ h->busy_scanning = 1;
+ mutex_unlock(&scan_mutex);
+
+ rebuild_lun_table(h, 0, 0);
+ complete_all(&h->scan_wait);
+ mutex_lock(&scan_mutex);
+ h->busy_scanning = 0;
+ mutex_unlock(&scan_mutex);
+ }
}
+
return 0;
}
case REPORT_LUNS_CHANGED:
printk(KERN_WARNING "cciss%d: report LUN data "
"changed\n", h->ctlr);
- if (h->rescan_wait)
- complete(h->rescan_wait);
+ /*
+ * Here, we could call add_to_scan_list and wake up the scan thread,
+ * except that it's quite likely that we will get more than one
+ * REPORT_LUNS_CHANGED condition in quick succession, which means
+ * that those which occur after the first one will likely happen
+ * *during* the scan_thread's rescan. And the rescan code is not
+ * robust enough to restart in the middle, undoing what it has already
+ * done, and it's not clear that it's even possible to do this, since
+ * part of what it does is notify the block layer, which starts
+ * doing it's own i/o to read partition tables and so on, and the
+ * driver doesn't have visibility to know what might need undoing.
+ * In any event, if possible, it is horribly complicated to get right
+ * so we just don't do it for now.
+ *
+ * Note: this REPORT_LUNS_CHANGED condition only occurs on the MSA2012.
+ */
return 1;
break;
case POWER_OR_RESET:
__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 */
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);
if (scratchpad == CCISS_FIRMWARE_READY)
break;
set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(HZ / 10); /* wait 100ms */
+ schedule_timeout(msecs_to_jiffies(100)); /* wait 100ms */
}
if (scratchpad != CCISS_FIRMWARE_READY) {
printk(KERN_WARNING "cciss: Board not ready. Timed out.\n");
* 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->maxsgentries = readl(&(c->cfgtable->MaxSGElements));
+
+ /*
+ * Limit native command to 32 s/g elements to save dma'able memory.
+ * Howvever spec says if 0, use 31
+ */
+
+ c->max_cmd_sgentries = 31;
+ if (c->maxsgentries > 512) {
+ c->max_cmd_sgentries = 32;
+ c->chainsize = c->maxsgentries - c->max_cmd_sgentries + 1;
+ c->maxsgentries -= 1; /* account for chain pointer */
+ } else {
+ c->maxsgentries = 31; /* Default to traditional value */
+ c->chainsize = 0; /* traditional */
}
+
+ 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') ||
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 */
break;
/* delay and try again */
set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(10);
+ schedule_timeout(msecs_to_jiffies(1));
}
#ifdef CCISS_DEBUG
return -1;
}
-static void free_hba(int i)
+static void free_hba(int n)
{
- ctlr_info_t *p = hba[i];
- int n;
+ ctlr_info_t *h = hba[n];
+ int i;
- hba[i] = NULL;
- for (n = 0; n < CISS_MAX_LUN; n++)
- put_disk(p->gendisk[n]);
- kfree(p);
+ hba[n] = NULL;
+ for (i = 0; i < h->highest_lun + 1; i++)
+ if (h->gendisk[i] != NULL)
+ put_disk(h->gendisk[i]);
+ kfree(h);
}
/* Send a message CDB to the firmware. */
{
int i;
int j = 0;
+ int k = 0;
int rc;
int dac, return_code;
- InquiryData_struct *inq_buff = NULL;
+ InquiryData_struct *inq_buff;
if (reset_devices) {
/* Reset the controller with a PCI power-cycle */
hba[i]->busy_initializing = 1;
INIT_HLIST_HEAD(&hba[i]->cmpQ);
INIT_HLIST_HEAD(&hba[i]->reqQ);
+ mutex_init(&hba[i]->busy_shutting_down);
if (cciss_pci_init(hba[i], pdev) != 0)
- goto clean1;
+ goto clean_no_release_regions;
sprintf(hba[i]->devname, "cciss%d", i);
hba[i]->ctlr = i;
hba[i]->pdev = pdev;
+ init_completion(&hba[i]->scan_wait);
+
+ 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;
printk(KERN_ERR "cciss: out of memory");
goto clean4;
}
-#ifdef CONFIG_CISS_SCSI_TAPE
- hba[i]->scsi_rejects.complete =
- kmalloc(sizeof(hba[i]->scsi_rejects.complete[0]) *
- (hba[i]->nr_cmds + 5), GFP_KERNEL);
- if (hba[i]->scsi_rejects.complete == NULL) {
- printk(KERN_ERR "cciss: out of memory");
+
+ /* Need space for temp scatter list */
+ hba[i]->scatter_list = kmalloc(hba[i]->max_commands *
+ sizeof(struct scatterlist *),
+ GFP_KERNEL);
+ for (k = 0; k < hba[i]->nr_cmds; k++) {
+ hba[i]->scatter_list[k] = kmalloc(sizeof(struct scatterlist) *
+ hba[i]->maxsgentries,
+ GFP_KERNEL);
+ if (hba[i]->scatter_list[k] == NULL) {
+ printk(KERN_ERR "cciss%d: could not allocate "
+ "s/g lists\n", i);
+ goto clean4;
+ }
+ }
+ hba[i]->cmd_sg_list = kmalloc(sizeof(struct Cmd_sg_list *) *
+ hba[i]->nr_cmds,
+ GFP_KERNEL);
+ if (!hba[i]->cmd_sg_list) {
+ printk(KERN_ERR "cciss%d: Cannot get memory for "
+ "s/g chaining.\n", i);
goto clean4;
}
-#endif
+ /* Build up chain blocks for each command */
+ if (hba[i]->chainsize > 0) {
+ for (j = 0; j < hba[i]->nr_cmds; j++) {
+ hba[i]->cmd_sg_list[j] =
+ kmalloc(sizeof(struct Cmd_sg_list),
+ GFP_KERNEL);
+ if (!hba[i]->cmd_sg_list[j]) {
+ printk(KERN_ERR "cciss%d: Cannot get memory "
+ "for chain block.\n", i);
+ goto clean4;
+ }
+ /* Need a block of chainsized s/g elements. */
+ hba[i]->cmd_sg_list[j]->sgchain =
+ kmalloc((hba[i]->chainsize *
+ sizeof(SGDescriptor_struct)),
+ GFP_KERNEL);
+ if (!hba[i]->cmd_sg_list[j]->sgchain) {
+ printk(KERN_ERR "cciss%d: Cannot get memory "
+ "for s/g chains\n", i);
+ goto clean4;
+ }
+ }
+ }
+
spin_lock_init(&hba[i]->lock);
/* Initialize the pdev driver private data.
hba[i]->num_luns = 0;
hba[i]->highest_lun = -1;
for (j = 0; j < CISS_MAX_LUN; j++) {
- hba[i]->drv[j].raid_level = -1;
- hba[i]->drv[j].queue = NULL;
+ hba[i]->drv[j] = NULL;
hba[i]->gendisk[j] = NULL;
}
}
return_code = sendcmd_withirq(CISS_INQUIRY, i, inq_buff,
- sizeof(InquiryData_struct), 0, 0 , 0, TYPE_CMD);
+ sizeof(InquiryData_struct), 0, CTLR_LUNID, TYPE_CMD);
if (return_code == IO_OK) {
hba[i]->firm_ver[0] = inq_buff->data_byte[32];
hba[i]->firm_ver[1] = inq_buff->data_byte[33];
printk(KERN_WARNING "cciss: unable to determine firmware"
" version of controller\n");
}
+ kfree(inq_buff);
cciss_procinit(i);
- hba[i]->cciss_max_sectors = 2048;
+ hba[i]->cciss_max_sectors = 8192;
+ rebuild_lun_table(hba[i], 1, 0);
hba[i]->busy_initializing = 0;
-
- rebuild_lun_table(hba[i], 1);
- hba[i]->cciss_scan_thread = kthread_run(scan_thread, hba[i],
- "cciss_scan%02d", i);
- if (IS_ERR(hba[i]->cciss_scan_thread))
- return PTR_ERR(hba[i]->cciss_scan_thread);
-
return 1;
clean4:
- kfree(inq_buff);
-#ifdef CONFIG_CISS_SCSI_TAPE
- kfree(hba[i]->scsi_rejects.complete);
-#endif
kfree(hba[i]->cmd_pool_bits);
+ /* Free up sg elements */
+ for (k = 0; k < hba[i]->nr_cmds; k++)
+ kfree(hba[i]->scatter_list[k]);
+ kfree(hba[i]->scatter_list);
+ /* Only free up extra s/g lists if controller supports them */
+ if (hba[i]->chainsize > 0) {
+ for (j = 0; j < hba[i]->nr_cmds; j++) {
+ if (hba[i]->cmd_sg_list[j]) {
+ kfree(hba[i]->cmd_sg_list[j]->sgchain);
+ kfree(hba[i]->cmd_sg_list[j]);
+ }
+ }
+ kfree(hba[i]->cmd_sg_list);
+ }
if (hba[i]->cmd_pool)
pci_free_consistent(hba[i]->pdev,
hba[i]->nr_cmds * sizeof(CommandList_struct),
clean2:
unregister_blkdev(hba[i]->major, hba[i]->devname);
clean1:
+ cciss_destroy_hba_sysfs_entry(hba[i]);
+clean0:
+ pci_release_regions(pdev);
+clean_no_release_regions:
hba[i]->busy_initializing = 0;
- /* cleanup any queues that may have been initialized */
- for (j=0; j <= hba[i]->highest_lun; j++){
- drive_info_struct *drv = &(hba[i]->drv[j]);
- if (drv->queue)
- blk_cleanup_queue(drv->queue);
- }
+
/*
* 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;
static void cciss_shutdown(struct pci_dev *pdev)
{
- ctlr_info_t *tmp_ptr;
- int i;
- char flush_buf[4];
+ ctlr_info_t *h;
+ char *flush_buf;
int return_code;
- tmp_ptr = pci_get_drvdata(pdev);
- if (tmp_ptr == NULL)
- return;
- i = tmp_ptr->ctlr;
- if (hba[i] == NULL)
+ h = pci_get_drvdata(pdev);
+ flush_buf = kzalloc(4, GFP_KERNEL);
+ if (!flush_buf) {
+ printk(KERN_WARNING
+ "cciss:%d cache not flushed, out of memory.\n",
+ h->ctlr);
return;
-
- /* Turn board interrupts off and send the flush cache command */
- /* sendcmd will turn off interrupt, and send the flush...
- * To write all data in the battery backed cache to disks */
- memset(flush_buf, 0, 4);
- return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL,
- TYPE_CMD);
- if (return_code == IO_OK) {
- printk(KERN_INFO "Completed flushing cache on controller %d\n", i);
- } else {
- printk(KERN_WARNING "Error flushing cache on controller %d\n", i);
}
- free_irq(hba[i]->intr[2], hba[i]);
+ /* write all data in the battery backed cache to disk */
+ memset(flush_buf, 0, 4);
+ return_code = sendcmd_withirq(CCISS_CACHE_FLUSH, h->ctlr, flush_buf,
+ 4, 0, CTLR_LUNID, TYPE_CMD);
+ kfree(flush_buf);
+ if (return_code != IO_OK)
+ printk(KERN_WARNING "cciss%d: Error flushing cache\n",
+ h->ctlr);
+ h->access.set_intr_mask(h, CCISS_INTR_OFF);
+ free_irq(h->intr[2], h);
}
static void __devexit cciss_remove_one(struct pci_dev *pdev)
return;
}
- kthread_stop(hba[i]->cciss_scan_thread);
+ mutex_lock(&hba[i]->busy_shutting_down);
+ remove_from_scan_list(hba[i]);
remove_proc_entry(hba[i]->devname, proc_cciss);
unregister_blkdev(hba[i]->major, hba[i]->devname);
if (disk) {
struct request_queue *q = disk->queue;
- if (disk->flags & GENHD_FL_UP)
+ if (disk->flags & GENHD_FL_UP) {
+ cciss_destroy_ld_sysfs_entry(hba[i], j, 1);
del_gendisk(disk);
+ }
if (q)
blk_cleanup_queue(q);
}
pci_free_consistent(hba[i]->pdev, hba[i]->nr_cmds * sizeof(ErrorInfo_struct),
hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle);
kfree(hba[i]->cmd_pool_bits);
-#ifdef CONFIG_CISS_SCSI_TAPE
- kfree(hba[i]->scsi_rejects.complete);
-#endif
+ /* Free up sg elements */
+ for (j = 0; j < hba[i]->nr_cmds; j++)
+ kfree(hba[i]->scatter_list[j]);
+ kfree(hba[i]->scatter_list);
+ /* Only free up extra s/g lists if controller supports them */
+ if (hba[i]->chainsize > 0) {
+ for (j = 0; j < hba[i]->nr_cmds; j++) {
+ if (hba[i]->cmd_sg_list[j]) {
+ kfree(hba[i]->cmd_sg_list[j]->sgchain);
+ kfree(hba[i]->cmd_sg_list[j]);
+ }
+ }
+ kfree(hba[i]->cmd_sg_list);
+ }
/*
* 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);
+ cciss_destroy_hba_sysfs_entry(hba[i]);
+ mutex_unlock(&hba[i]->busy_shutting_down);
free_hba(i);
}
*/
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
printk(KERN_INFO DRIVER_NAME "\n");
+ err = bus_register(&cciss_bus_type);
+ if (err)
+ return err;
+
+ /* Start the scan thread */
+ cciss_scan_thread = kthread_run(scan_thread, NULL, "cciss_scan");
+ if (IS_ERR(cciss_scan_thread)) {
+ err = PTR_ERR(cciss_scan_thread);
+ goto err_bus_unregister;
+ }
+
/* Register for our PCI devices */
- return pci_register_driver(&cciss_pci_driver);
+ err = pci_register_driver(&cciss_pci_driver);
+ if (err)
+ goto err_thread_stop;
+
+ return err;
+
+err_thread_stop:
+ kthread_stop(cciss_scan_thread);
+err_bus_unregister:
+ bus_unregister(&cciss_bus_type);
+
+ return err;
}
static void __exit cciss_cleanup(void)
cciss_remove_one(hba[i]->pdev);
}
}
+ kthread_stop(cciss_scan_thread);
remove_proc_entry("driver/cciss", NULL);
+ bus_unregister(&cciss_bus_type);
}
static void fail_all_cmds(unsigned long ctlr)
while (!hlist_empty(&h->cmpQ)) {
c = hlist_entry(h->cmpQ.first, CommandList_struct, list);
removeQ(c);
- c->err_info->CommandStatus = CMD_HARDWARE_ERR;
+ if (c->cmd_type != CMD_MSG_STALE)
+ c->err_info->CommandStatus = CMD_HARDWARE_ERR;
if (c->cmd_type == CMD_RWREQ) {
complete_command(h, c, 0);
} else if (c->cmd_type == CMD_IOCTL_PEND)
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff