diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/scsi/megaraid.c | 120 | ||||
| -rw-r--r-- | drivers/scsi/megaraid.h | 3 | ||||
| -rw-r--r-- | drivers/scsi/scsi.c | 56 |
3 files changed, 32 insertions, 147 deletions
diff --git a/drivers/scsi/megaraid.c b/drivers/scsi/megaraid.c index 816db12ef5d5..b7770516f4c2 100644 --- a/drivers/scsi/megaraid.c +++ b/drivers/scsi/megaraid.c @@ -531,13 +531,6 @@ mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy) int target = 0; int ldrv_num = 0; /* logical drive number */ - - /* - * filter the internal and ioctl commands - */ - if((cmd->cmnd[0] == MEGA_INTERNAL_CMD)) - return (scb_t *)cmd->host_scribble; - /* * We know what channels our logical drives are on - mega_find_card() */ @@ -1439,19 +1432,22 @@ mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status) cmdid = completed[i]; - if( cmdid == CMDID_INT_CMDS ) { /* internal command */ + /* + * Only free SCBs for the commands coming down from the + * mid-layer, not for which were issued internally + * + * For internal command, restore the status returned by the + * firmware so that user can interpret it. + */ + if (cmdid == CMDID_INT_CMDS) { scb = &adapter->int_scb; - cmd = scb->cmd; - mbox = (mbox_t *)scb->raw_mbox; - /* - * Internal command interface do not fire the extended - * passthru or 64-bit passthru - */ - pthru = scb->pthru; + list_del_init(&scb->list); + scb->state = SCB_FREE; - } - else { + adapter->int_status = status; + complete(&adapter->int_waitq); + } else { scb = &adapter->scb_list[cmdid]; /* @@ -1640,25 +1636,7 @@ mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status) cmd->result |= (DID_BAD_TARGET << 16)|status; } - /* - * Only free SCBs for the commands coming down from the - * mid-layer, not for which were issued internally - * - * For internal command, restore the status returned by the - * firmware so that user can interpret it. - */ - if( cmdid == CMDID_INT_CMDS ) { /* internal command */ - cmd->result = status; - - /* - * Remove the internal command from the pending list - */ - list_del_init(&scb->list); - scb->state = SCB_FREE; - } - else { - mega_free_scb(adapter, scb); - } + mega_free_scb(adapter, scb); /* Add Scsi_Command to end of completed queue */ list_add_tail(SCSI_LIST(cmd), &adapter->completed_list); @@ -4133,23 +4111,15 @@ mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt, * The last argument is the address of the passthru structure if the command * to be fired is a passthru command * - * lockscope specifies whether the caller has already acquired the lock. Of - * course, the caller must know which lock we are talking about. - * * Note: parameter 'pthru' is null for non-passthru commands. */ static int mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru) { - Scsi_Cmnd *scmd; - struct scsi_device *sdev; + unsigned long flags; scb_t *scb; int rval; - scmd = scsi_allocate_command(GFP_KERNEL); - if (!scmd) - return -ENOMEM; - /* * The internal commands share one command id and hence are * serialized. This is so because we want to reserve maximum number of @@ -4160,73 +4130,45 @@ mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru) scb = &adapter->int_scb; memset(scb, 0, sizeof(scb_t)); - sdev = kzalloc(sizeof(struct scsi_device), GFP_KERNEL); - scmd->device = sdev; - - memset(adapter->int_cdb, 0, sizeof(adapter->int_cdb)); - scmd->cmnd = adapter->int_cdb; - scmd->device->host = adapter->host; - scmd->host_scribble = (void *)scb; - scmd->cmnd[0] = MEGA_INTERNAL_CMD; - - scb->state |= SCB_ACTIVE; - scb->cmd = scmd; + scb->idx = CMDID_INT_CMDS; + scb->state |= SCB_ACTIVE | SCB_PENDQ; memcpy(scb->raw_mbox, mc, sizeof(megacmd_t)); /* * Is it a passthru command */ - if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { - + if (mc->cmd == MEGA_MBOXCMD_PASSTHRU) scb->pthru = pthru; - } - - scb->idx = CMDID_INT_CMDS; - megaraid_queue_lck(scmd, mega_internal_done); + spin_lock_irqsave(&adapter->lock, flags); + list_add_tail(&scb->list, &adapter->pending_list); + /* + * Check if the HBA is in quiescent state, e.g., during a + * delete logical drive opertion. If it is, don't run + * the pending_list. + */ + if (atomic_read(&adapter->quiescent) == 0) + mega_runpendq(adapter); + spin_unlock_irqrestore(&adapter->lock, flags); wait_for_completion(&adapter->int_waitq); - rval = scmd->result; - mc->status = scmd->result; - kfree(sdev); + mc->status = rval = adapter->int_status; /* * Print a debug message for all failed commands. Applications can use * this information. */ - if( scmd->result && trace_level ) { + if (rval && trace_level) { printk("megaraid: cmd [%x, %x, %x] status:[%x]\n", - mc->cmd, mc->opcode, mc->subopcode, scmd->result); + mc->cmd, mc->opcode, mc->subopcode, rval); } mutex_unlock(&adapter->int_mtx); - - scsi_free_command(GFP_KERNEL, scmd); - return rval; } - -/** - * mega_internal_done() - * @scmd - internal scsi command - * - * Callback routine for internal commands. - */ -static void -mega_internal_done(Scsi_Cmnd *scmd) -{ - adapter_t *adapter; - - adapter = (adapter_t *)scmd->device->host->hostdata; - - complete(&adapter->int_waitq); - -} - - static struct scsi_host_template megaraid_template = { .module = THIS_MODULE, .name = "MegaRAID", diff --git a/drivers/scsi/megaraid.h b/drivers/scsi/megaraid.h index 4d0ce4e78dfd..508d65e5a518 100644 --- a/drivers/scsi/megaraid.h +++ b/drivers/scsi/megaraid.h @@ -853,10 +853,10 @@ typedef struct { u8 sglen; /* f/w supported scatter-gather list length */ - unsigned char int_cdb[MAX_COMMAND_SIZE]; scb_t int_scb; struct mutex int_mtx; /* To synchronize the internal commands */ + int int_status; /* status of internal cmd */ struct completion int_waitq; /* wait queue for internal cmds */ @@ -1004,7 +1004,6 @@ static int mega_del_logdrv(adapter_t *, int); static int mega_do_del_logdrv(adapter_t *, int); static void mega_get_max_sgl(adapter_t *); static int mega_internal_command(adapter_t *, megacmd_t *, mega_passthru *); -static void mega_internal_done(Scsi_Cmnd *); static int mega_support_cluster(adapter_t *); #endif diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c index 1d98ac960887..c4dd0bfc663a 100644 --- a/drivers/scsi/scsi.c +++ b/drivers/scsi/scsi.c @@ -403,62 +403,6 @@ static void scsi_put_host_cmd_pool(gfp_t gfp_mask) } /** - * scsi_allocate_command - get a fully allocated SCSI command - * @gfp_mask: allocation mask - * - * This function is for use outside of the normal host based pools. - * It allocates the relevant command and takes an additional reference - * on the pool it used. This function *must* be paired with - * scsi_free_command which also has the identical mask, otherwise the - * free pool counts will eventually go wrong and you'll trigger a bug. - * - * This function should *only* be used by drivers that need a static - * command allocation at start of day for internal functions. - */ -struct scsi_cmnd *scsi_allocate_command(gfp_t gfp_mask) -{ - struct scsi_host_cmd_pool *pool = scsi_get_host_cmd_pool(gfp_mask); - - if (!pool) - return NULL; - - return scsi_pool_alloc_command(pool, gfp_mask); -} -EXPORT_SYMBOL(scsi_allocate_command); - -/** - * scsi_free_command - free a command allocated by scsi_allocate_command - * @gfp_mask: mask used in the original allocation - * @cmd: command to free - * - * Note: using the original allocation mask is vital because that's - * what determines which command pool we use to free the command. Any - * mismatch will cause the system to BUG eventually. - */ -void scsi_free_command(gfp_t gfp_mask, struct scsi_cmnd *cmd) -{ - struct scsi_host_cmd_pool *pool = scsi_get_host_cmd_pool(gfp_mask); - - /* - * this could trigger if the mask to scsi_allocate_command - * doesn't match this mask. Otherwise we're guaranteed that this - * succeeds because scsi_allocate_command must have taken a reference - * on the pool - */ - BUG_ON(!pool); - - scsi_pool_free_command(pool, cmd); - /* - * scsi_put_host_cmd_pool is called twice; once to release the - * reference we took above, and once to release the reference - * originally taken by scsi_allocate_command - */ - scsi_put_host_cmd_pool(gfp_mask); - scsi_put_host_cmd_pool(gfp_mask); -} -EXPORT_SYMBOL(scsi_free_command); - -/** * scsi_setup_command_freelist - Setup the command freelist for a scsi host. * @shost: host to allocate the freelist for. * |