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[SCSI] mpt2sas: Added SCSIIO, Internal and high priority memory pools to support multiple TM

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1) create a pool of high priority message frames in the region of memory
between message frames and chains.  The modifications are in
_base_allocate_memory_pools.  Also create a seperate pool of memory for
internal commands located near the same region of memory.  The pool of high
priority message frames is restriced by the facts->HighPriorityCredit.

2) Create additional API for accessing request message frames. New function
mpt2sas_base_get_smid_hpr is for highpriority request. New function
mpt2sas_base_get_smid_scsiio for SCSI_IO, passing in the scsi command
pointer.  The mpt2sas_base_get_smid function is for requesting internal
commands.

3) Added new function _base_get_cb_idx to obtain the callback
index from one of the three pools of request message frames.

4) Removed wrapper functions _scsih_scsi_lookup_set and
_scsih_scsi_lookup_getclear. These were removed because this handling was
moved into mpt2sas_base_get_smid_scsiio and mpt2sas_base_free_smid.

5) The function mpt2sas_base_free_smid is modified so the request message
frames are put back on one of the three pools of request message frames.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Kashyap, Desai
2009-09-14 11:02:48 +05:30
committed by James Bottomley
parent 19d3ebe3d5
commit 595bb0bd62
4 changed files with 307 additions and 137 deletions
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49
drivers/scsi/mpt2sas/mpt2sas_base.h
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@@ -264,6 +264,13 @@ struct _internal_cmd {
* SAS Topology Structures
*/
#define MPTSAS_STATE_TR_SEND 0x0001
#define MPTSAS_STATE_TR_COMPLETE 0x0002
#define MPTSAS_STATE_CNTRL_SEND 0x0004
#define MPTSAS_STATE_CNTRL_COMPLETE 0x0008
#define MPT2SAS_REQ_SAS_CNTRL 0x0010
/**
* struct _sas_device - attached device information
* @list: sas device list
@@ -510,8 +517,9 @@ typedef void (*MPT_ADD_SGE)(void *paddr, u32 flags_length, dma_addr_t dma_addr);
* @config_page_sz: config page size
* @config_page: reserve memory for config page payload
* @config_page_dma:
* @hba_queue_depth: hba request queue depth
* @sge_size: sg element size for either 32/64 bit
* @request_depth: hba request queue depth
* @scsiio_depth: SCSI_IO queue depth
* @request_sz: per request frame size
* @request: pool of request frames
* @request_dma:
@@ -528,6 +536,18 @@ typedef void (*MPT_ADD_SGE)(void *paddr, u32 flags_length, dma_addr_t dma_addr);
* @chains_needed_per_io: max chains per io
* @chain_offset_value_for_main_message: location 1st sg in main
* @chain_depth: total chains allocated
* @hi_priority_smid:
* @hi_priority:
* @hi_priority_dma:
* @hi_priority_depth:
* @hpr_lookup:
* @hpr_free_list:
* @internal_smid:
* @internal:
* @internal_dma:
* @internal_depth:
* @internal_lookup:
* @internal_free_list:
* @sense: pool of sense
* @sense_dma:
* @sense_dma_pool:
@@ -643,9 +663,10 @@ struct MPT2SAS_ADAPTER {
void *config_page;
dma_addr_t config_page_dma;
/* request */
/* scsiio request */
u16 hba_queue_depth;
u16 sge_size;
u16 request_depth;
u16 scsiio_depth;
u16 request_sz;
u8 *request;
dma_addr_t request_dma;
@@ -665,6 +686,22 @@ struct MPT2SAS_ADAPTER {
u16 chain_offset_value_for_main_message;
u16 chain_depth;
/* hi-priority queue */
u16 hi_priority_smid;
u8 *hi_priority;
dma_addr_t hi_priority_dma;
u16 hi_priority_depth;
struct request_tracker *hpr_lookup;
struct list_head hpr_free_list;
/* internal queue */
u16 internal_smid;
u8 *internal;
dma_addr_t internal_dma;
u16 internal_depth;
struct request_tracker *internal_lookup;
struct list_head internal_free_list;
/* sense */
u8 *sense;
dma_addr_t sense_dma;
@@ -720,9 +757,13 @@ int mpt2sas_base_hard_reset_handler(struct MPT2SAS_ADAPTER *ioc, int sleep_flag,
void *mpt2sas_base_get_msg_frame(struct MPT2SAS_ADAPTER *ioc, u16 smid);
void *mpt2sas_base_get_sense_buffer(struct MPT2SAS_ADAPTER *ioc, u16 smid);
void mpt2sas_base_build_zero_len_sge(struct MPT2SAS_ADAPTER *ioc, void *paddr);
dma_addr_t mpt2sas_base_get_msg_frame_dma(struct MPT2SAS_ADAPTER *ioc, u16 smid);
dma_addr_t mpt2sas_base_get_sense_buffer_dma(struct MPT2SAS_ADAPTER *ioc, u16 smid);
/* hi-priority queue */
u16 mpt2sas_base_get_smid_hpr(struct MPT2SAS_ADAPTER *ioc, u8 cb_idx);
u16 mpt2sas_base_get_smid_scsiio(struct MPT2SAS_ADAPTER *ioc, u8 cb_idx,
struct scsi_cmnd *scmd);
u16 mpt2sas_base_get_smid(struct MPT2SAS_ADAPTER *ioc, u8 cb_idx);
void mpt2sas_base_free_smid(struct MPT2SAS_ADAPTER *ioc, u16 smid);
void mpt2sas_base_put_smid_scsi_io(struct MPT2SAS_ADAPTER *ioc, u16 smid,