* 2 of the License, or (at your option) any later version.
*
* FILE : megaraid_sas.c
- * Version : v00.00.03.01
+ * Version : v00.00.03.05
*
* Authors:
- * Sreenivas Bagalkote <Sreenivas.Bagalkote@lsil.com>
- * Sumant Patro <Sumant.Patro@lsil.com>
+ * Sreenivas Bagalkote <Sreenivas.Bagalkote@lsi.com>
+ * Sumant Patro <Sumant.Patro@lsi.com>
*
* List of supported controllers
*
MODULE_LICENSE("GPL");
MODULE_VERSION(MEGASAS_VERSION);
-MODULE_AUTHOR("sreenivas.bagalkote@lsil.com");
+MODULE_AUTHOR("megaraidlinux@lsi.com");
MODULE_DESCRIPTION("LSI Logic MegaRAID SAS Driver");
/*
static struct fasync_struct *megasas_async_queue;
static DEFINE_MUTEX(megasas_async_queue_mutex);
+static u32 megasas_dbg_lvl;
+
/**
* megasas_get_cmd - Get a command from the free pool
* @instance: Adapter soft state
* @cmd: Command to be issued
*
* This function waits on an event for the command to be returned from ISR.
+ * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
* Used to issue ioctl commands.
*/
static int
instance->instancet->fire_cmd(cmd->frame_phys_addr ,0,instance->reg_set);
- wait_event(instance->int_cmd_wait_q, (cmd->cmd_status != ENODATA));
+ wait_event_timeout(instance->int_cmd_wait_q, (cmd->cmd_status != ENODATA),
+ MEGASAS_INTERNAL_CMD_WAIT_TIME*HZ);
return 0;
}
*
* MFI firmware can abort previously issued AEN comamnd (automatic event
* notification). The megasas_issue_blocked_abort_cmd() issues such abort
- * cmd and blocks till it is completed.
+ * cmd and waits for return status.
+ * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
*/
static int
megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
/*
* Wait for this cmd to complete
*/
- wait_event(instance->abort_cmd_wait_q, (cmd->cmd_status != 0xFF));
+ wait_event_timeout(instance->abort_cmd_wait_q, (cmd->cmd_status != 0xFF),
+ MEGASAS_INTERNAL_CMD_WAIT_TIME*HZ);
megasas_return_cmd(instance, cmd);
return 0;
* Returns the number of frames required for numnber of sge's (sge_count)
*/
-u32 megasas_get_frame_count(u8 sge_count)
+static u32 megasas_get_frame_count(u8 sge_count)
{
int num_cnt;
int sge_bytes;
}
}
+ /**
+ * megasas_dump_pending_frames - Dumps the frame address of all pending cmds
+ * in FW
+ * @instance: Adapter soft state
+ */
+static inline void
+megasas_dump_pending_frames(struct megasas_instance *instance)
+{
+ struct megasas_cmd *cmd;
+ int i,n;
+ union megasas_sgl *mfi_sgl;
+ struct megasas_io_frame *ldio;
+ struct megasas_pthru_frame *pthru;
+ u32 sgcount;
+ u32 max_cmd = instance->max_fw_cmds;
+
+ printk(KERN_ERR "\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
+ printk(KERN_ERR "megasas[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
+ if (IS_DMA64)
+ printk(KERN_ERR "\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
+ else
+ printk(KERN_ERR "\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
+
+ printk(KERN_ERR "megasas[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
+ for (i = 0; i < max_cmd; i++) {
+ cmd = instance->cmd_list[i];
+ if(!cmd->scmd)
+ continue;
+ printk(KERN_ERR "megasas[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
+ if (megasas_is_ldio(cmd->scmd)){
+ ldio = (struct megasas_io_frame *)cmd->frame;
+ mfi_sgl = &ldio->sgl;
+ sgcount = ldio->sge_count;
+ printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",instance->host->host_no, cmd->frame_count,ldio->cmd,ldio->target_id, ldio->start_lba_lo,ldio->start_lba_hi,ldio->sense_buf_phys_addr_lo,sgcount);
+ }
+ else {
+ pthru = (struct megasas_pthru_frame *) cmd->frame;
+ mfi_sgl = &pthru->sgl;
+ sgcount = pthru->sge_count;
+ printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",instance->host->host_no,cmd->frame_count,pthru->cmd,pthru->target_id,pthru->lun,pthru->cdb_len , pthru->data_xfer_len,pthru->sense_buf_phys_addr_lo,sgcount);
+ }
+ if(megasas_dbg_lvl & MEGASAS_DBG_LVL){
+ for (n = 0; n < sgcount; n++){
+ if (IS_DMA64)
+ printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%08lx ",mfi_sgl->sge64[n].length , (unsigned long)mfi_sgl->sge64[n].phys_addr) ;
+ else
+ printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%x ",mfi_sgl->sge32[n].length , mfi_sgl->sge32[n].phys_addr) ;
+ }
+ }
+ printk(KERN_ERR "\n");
+ } /*for max_cmd*/
+ printk(KERN_ERR "\nmegasas[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
+ for (i = 0; i < max_cmd; i++) {
+
+ cmd = instance->cmd_list[i];
+
+ if(cmd->sync_cmd == 1){
+ printk(KERN_ERR "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
+ }
+ }
+ printk(KERN_ERR "megasas[%d]: Dumping Done.\n\n",instance->host->host_no);
+}
+
/**
* megasas_queue_command - Queue entry point
* @scmd: SCSI command to be queued
*/
writel(MFI_STOP_ADP,
&instance->reg_set->inbound_doorbell);
+ megasas_dump_pending_frames(instance);
instance->hw_crit_error = 1;
return FAILED;
}
static int
megasas_deplete_reply_queue(struct megasas_instance *instance, u8 alt_status)
{
- u32 producer;
- u32 consumer;
- u32 context;
- struct megasas_cmd *cmd;
-
/*
* Check if it is our interrupt
* Clear the interrupt
if(instance->instancet->clear_intr(instance->reg_set))
return IRQ_NONE;
- producer = *instance->producer;
- consumer = *instance->consumer;
-
- while (consumer != producer) {
- context = instance->reply_queue[consumer];
-
- cmd = instance->cmd_list[context];
-
- megasas_complete_cmd(instance, cmd, alt_status);
-
- consumer++;
- if (consumer == (instance->max_fw_cmds + 1)) {
- consumer = 0;
- }
- }
-
- *instance->consumer = producer;
+ /*
+ * Schedule the tasklet for cmd completion
+ */
+ tasklet_schedule(&instance->isr_tasklet);
return IRQ_HANDLED;
}
/**
* megasas_isr - isr entry point
*/
-static irqreturn_t megasas_isr(int irq, void *devp, struct pt_regs *regs)
+static irqreturn_t megasas_isr(int irq, void *devp)
{
return megasas_deplete_reply_queue((struct megasas_instance *)devp,
DID_OK);
}
/**
+ * megasas_complete_cmd_dpc - Returns FW's controller structure
+ * @instance_addr: Address of adapter soft state
+ *
+ * Tasklet to complete cmds
+ */
+static void megasas_complete_cmd_dpc(unsigned long instance_addr)
+{
+ u32 producer;
+ u32 consumer;
+ u32 context;
+ struct megasas_cmd *cmd;
+ struct megasas_instance *instance = (struct megasas_instance *)instance_addr;
+
+ producer = *instance->producer;
+ consumer = *instance->consumer;
+
+ while (consumer != producer) {
+ context = instance->reply_queue[consumer];
+
+ cmd = instance->cmd_list[context];
+
+ megasas_complete_cmd(instance, cmd, DID_OK);
+
+ consumer++;
+ if (consumer == (instance->max_fw_cmds + 1)) {
+ consumer = 0;
+ }
+ }
+
+ *instance->consumer = producer;
+}
+
+/**
* megasas_init_mfi - Initializes the FW
* @instance: Adapter soft state
*
kfree(ctrl_info);
+ /*
+ * Setup tasklet for cmd completion
+ */
+
+ tasklet_init(&instance->isr_tasklet, megasas_complete_cmd_dpc,
+ (unsigned long)instance);
return 0;
fail_fw_init:
instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
instance->init_id = MEGASAS_DEFAULT_INIT_ID;
+ megasas_dbg_lvl = 0;
+
/*
* Initialize MFI Firmware
*/
scsi_remove_host(instance->host);
megasas_flush_cache(instance);
megasas_shutdown_controller(instance);
+ tasklet_kill(&instance->isr_tasklet);
/*
* Take the instance off the instance array. Note that we will not
int i;
int error = 0;
- clear_user(ioc, sizeof(*ioc));
+ if (clear_user(ioc, sizeof(*ioc)))
+ return -EFAULT;
if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
/*
* File operations structure for management interface
*/
-static struct file_operations megasas_mgmt_fops = {
+static const struct file_operations megasas_mgmt_fops = {
.owner = THIS_MODULE,
.open = megasas_mgmt_open,
.release = megasas_mgmt_release,
static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date,
NULL);
+static ssize_t
+megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf)
+{
+ return sprintf(buf,"%u",megasas_dbg_lvl);
+}
+
+static ssize_t
+megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count)
+{
+ int retval = count;
+ if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){
+ printk(KERN_ERR "megasas: could not set dbg_lvl\n");
+ retval = -EINVAL;
+ }
+ return retval;
+}
+
+static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUGO, megasas_sysfs_show_dbg_lvl,
+ megasas_sysfs_set_dbg_lvl);
+
/**
* megasas_init - Driver load entry point
*/
if (rval) {
printk(KERN_DEBUG "megasas: PCI hotplug regisration failed \n");
- unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
- }
-
- driver_create_file(&megasas_pci_driver.driver, &driver_attr_version);
- driver_create_file(&megasas_pci_driver.driver,
- &driver_attr_release_date);
+ goto err_pcidrv;
+ }
+
+ rval = driver_create_file(&megasas_pci_driver.driver,
+ &driver_attr_version);
+ if (rval)
+ goto err_dcf_attr_ver;
+ rval = driver_create_file(&megasas_pci_driver.driver,
+ &driver_attr_release_date);
+ if (rval)
+ goto err_dcf_rel_date;
+ rval = driver_create_file(&megasas_pci_driver.driver,
+ &driver_attr_dbg_lvl);
+ if (rval)
+ goto err_dcf_dbg_lvl;
return rval;
+err_dcf_dbg_lvl:
+ driver_remove_file(&megasas_pci_driver.driver,
+ &driver_attr_release_date);
+err_dcf_rel_date:
+ driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
+err_dcf_attr_ver:
+ pci_unregister_driver(&megasas_pci_driver);
+err_pcidrv:
+ unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
+ return rval;
}
/**
*/
static void __exit megasas_exit(void)
{
- driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
+ driver_remove_file(&megasas_pci_driver.driver,
+ &driver_attr_dbg_lvl);
driver_remove_file(&megasas_pci_driver.driver,
&driver_attr_release_date);
+ driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
pci_unregister_driver(&megasas_pci_driver);
unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff