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[SCSI] megaraid_sas: prints pending cmds before setting hw_crit_error 

This patch adds function to print the pending frame details before returning
failure from the reset routine. It also exposes a new variable megasas_dbg_lvl
that allows the user to set the debug level for logging.

Signed-off-by: Sumant Patro <Sumant.Patro@lsil.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Sumant Patro 2006-10-03 13:09:14 -07:00 committed by James Bottomley
parent b274cab779
commit 658dcedb4e
2 changed files with 94 additions and 0 deletions
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92
drivers/scsi/megaraid/megaraid_sas.c
View File

@ -71,6 +71,8 @@ static struct megasas_mgmt_info megasas_mgmt_info;
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
@ -758,6 +760,69 @@ static inline int megasas_is_ldio(struct scsi_cmnd *cmd)
}
}
/**
* 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
@ -869,6 +934,7 @@ static int megasas_wait_for_outstanding(struct megasas_instance *instance)
*/
writel(MFI_STOP_ADP,
&instance->reg_set->inbound_doorbell);
megasas_dump_pending_frames(instance);
instance->hw_crit_error = 1;
return FAILED;
}
@ -2236,6 +2302,8 @@ megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
instance->init_id = MEGASAS_DEFAULT_INIT_ID;
megasas_dbg_lvl = 0;
/*
* Initialize MFI Firmware
*/
@ -2862,6 +2930,26 @@ megasas_sysfs_show_release_date(struct device_driver *dd, char *buf)
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
*/
@ -2902,6 +2990,8 @@ static int __init megasas_init(void)
driver_create_file(&megasas_pci_driver.driver, &driver_attr_version);
driver_create_file(&megasas_pci_driver.driver,
&driver_attr_release_date);
driver_create_file(&megasas_pci_driver.driver,
&driver_attr_dbg_lvl);
return rval;
}
@ -2914,6 +3004,8 @@ 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_release_date);
driver_remove_file(&megasas_pci_driver.driver,
&driver_attr_dbg_lvl);
pci_unregister_driver(&megasas_pci_driver);
unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");

2
drivers/scsi/megaraid/megaraid_sas.h
View File

@ -537,6 +537,8 @@ struct megasas_ctrl_info {
#define MEGASAS_MAX_LUN 8
#define MEGASAS_MAX_LD 64
#define MEGASAS_DBG_LVL 1
/*
* When SCSI mid-layer calls driver's reset routine, driver waits for
* MEGASAS_RESET_WAIT_TIME seconds for all outstanding IO to complete. Note