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qla2xxx: ISP27xx queue index shadow registers. 

For ISP27xx use the request/response queue index shadow registers
to avoid directly access them on the PCI bus.

Signed-off-by: Joe Carnuccio <joe.carnuccio@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Joe Carnuccio 2014-04-11 16:54:37 -04:00 committed by Christoph Hellwig
parent c04964017a
commit 7c6300e394
6 changed files with 33 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/scsi/qla2xxx/qla_def.h
View File

@ -2685,6 +2685,7 @@ struct rsp_que {
uint32_t __iomem *rsp_q_out;
uint16_t ring_index;
uint16_t out_ptr;
uint16_t *in_ptr; /* queue shadow in index */
uint16_t length;
uint16_t options;
uint16_t rid;
@ -2711,6 +2712,7 @@ struct req_que {
uint32_t __iomem *req_q_out;
uint16_t ring_index;
uint16_t in_ptr;
uint16_t *out_ptr; /* queue shadow out index */
uint16_t cnt;
uint16_t length;
uint16_t options;
@ -3019,6 +3021,7 @@ struct qla_hw_data {
(((ha)->fw_attributes_h << 16 | (ha)->fw_attributes) & BIT_22))
#define IS_ATIO_MSIX_CAPABLE(ha) (IS_QLA83XX(ha))
#define IS_TGT_MODE_CAPABLE(ha) (ha->tgt.atio_q_length)
#define IS_SHADOW_REG_CAPABLE(ha) (IS_QLA27XX(ha))
/* HBA serial number */
uint8_t serial0;

5
drivers/scsi/qla2xxx/qla_fw.h
View File

@ -371,7 +371,10 @@ struct init_cb_24xx {
* BIT 14 = Data Rate bit 1
* BIT 15 = Data Rate bit 2
* BIT 16 = Enable 75 ohm Termination Select
* BIT 17-31 = Reserved
* BIT 17-28 = Reserved
* BIT 29 = Enable response queue 0 in index shadowing
* BIT 30 = Enable request queue 0 out index shadowing
* BIT 31 = Reserved
*/
uint32_t firmware_options_3;
uint16_t qos;

8
drivers/scsi/qla2xxx/qla_init.c
View File

@ -2062,6 +2062,10 @@ qla24xx_config_rings(struct scsi_qla_host *vha)
icb->atio_q_address[0] = cpu_to_le32(LSD(ha->tgt.atio_dma));
icb->atio_q_address[1] = cpu_to_le32(MSD(ha->tgt.atio_dma));
if (IS_SHADOW_REG_CAPABLE(ha))
icb->firmware_options_2 |=
__constant_cpu_to_le32(BIT_30|BIT_29);
if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
icb->qos = __constant_cpu_to_le16(QLA_DEFAULT_QUE_QOS);
icb->rid = __constant_cpu_to_le16(rid);
@ -2139,6 +2143,8 @@ qla2x00_init_rings(scsi_qla_host_t *vha)
req = ha->req_q_map[que];
if (!req)
continue;
req->out_ptr = (void *)(req->ring + req->length);
*req->out_ptr = 0;
for (cnt = 1; cnt < req->num_outstanding_cmds; cnt++)
req->outstanding_cmds[cnt] = NULL;
@ -2154,6 +2160,8 @@ qla2x00_init_rings(scsi_qla_host_t *vha)
rsp = ha->rsp_q_map[que];
if (!rsp)
continue;
rsp->in_ptr = (void *)(rsp->ring + rsp->length);
*rsp->in_ptr = 0;
/* Initialize response queue entries */
if (IS_QLAFX00(ha))
qlafx00_init_response_q_entries(rsp);

12
drivers/scsi/qla2xxx/qla_iocb.c
View File

@ -1478,8 +1478,8 @@ qla24xx_start_scsi(srb_t *sp)
tot_dsds = nseg;
req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
if (req->cnt < (req_cnt + 2)) {
cnt = RD_REG_DWORD_RELAXED(req->req_q_out);
cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
RD_REG_DWORD_RELAXED(req->req_q_out);
if (req->ring_index < cnt)
req->cnt = cnt - req->ring_index;
else
@ -1697,8 +1697,8 @@ qla24xx_dif_start_scsi(srb_t *sp)
tot_prot_dsds = nseg;
tot_dsds += nseg;
if (req->cnt < (req_cnt + 2)) {
cnt = RD_REG_DWORD_RELAXED(req->req_q_out);
cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
RD_REG_DWORD_RELAXED(req->req_q_out);
if (req->ring_index < cnt)
req->cnt = cnt - req->ring_index;
else
@ -2825,8 +2825,8 @@ qla2x00_start_bidir(srb_t *sp, struct scsi_qla_host *vha, uint32_t tot_dsds)
/* Check for room on request queue. */
if (req->cnt < req_cnt + 2) {
cnt = RD_REG_DWORD_RELAXED(req->req_q_out);
cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
RD_REG_DWORD_RELAXED(req->req_q_out);
if (req->ring_index < cnt)
req->cnt = cnt - req->ring_index;
else

10
drivers/scsi/qla2xxx/qla_mbx.c
View File

@ -3735,6 +3735,9 @@ qla25xx_init_req_que(struct scsi_qla_host *vha, struct req_que *req)
ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x10d3,
"Entered %s.\n", __func__);
if (IS_SHADOW_REG_CAPABLE(ha))
req->options |= BIT_13;
mcp->mb[0] = MBC_INITIALIZE_MULTIQ;
mcp->mb[1] = req->options;
mcp->mb[2] = MSW(LSD(req->dma));
@ -3754,7 +3757,7 @@ qla25xx_init_req_que(struct scsi_qla_host *vha, struct req_que *req)
/* que in ptr index */
mcp->mb[8] = 0;
/* que out ptr index */
mcp->mb[9] = 0;
mcp->mb[9] = *req->out_ptr = 0;
mcp->out_mb = MBX_14|MBX_13|MBX_12|MBX_11|MBX_10|MBX_9|MBX_8|MBX_7|
MBX_6|MBX_5|MBX_4|MBX_3|MBX_2|MBX_1|MBX_0;
mcp->in_mb = MBX_0;
@ -3801,6 +3804,9 @@ qla25xx_init_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x10d6,
"Entered %s.\n", __func__);
if (IS_SHADOW_REG_CAPABLE(ha))
rsp->options |= BIT_13;
mcp->mb[0] = MBC_INITIALIZE_MULTIQ;
mcp->mb[1] = rsp->options;
mcp->mb[2] = MSW(LSD(rsp->dma));
@ -3815,7 +3821,7 @@ qla25xx_init_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
mcp->mb[4] = rsp->id;
/* que in ptr index */
mcp->mb[8] = 0;
mcp->mb[8] = *rsp->in_ptr = 0;
/* que out ptr index */
mcp->mb[9] = 0;
mcp->out_mb = MBX_14|MBX_13|MBX_9|MBX_8|MBX_7

6
drivers/scsi/qla2xxx/qla_tmpl.c
View File

@ -679,7 +679,8 @@ qla27xx_fwdt_entry_t274(struct scsi_qla_host *vha,
if (req || !buf) {
qla27xx_insert16(i, buf, len);
qla27xx_insert16(1, buf, len);
qla27xx_insert32(0, buf, len);
qla27xx_insert32(req && req->out_ptr ?
*req->out_ptr : 0, buf, len);
count++;
}
}
@ -689,7 +690,8 @@ qla27xx_fwdt_entry_t274(struct scsi_qla_host *vha,
if (rsp || !buf) {
qla27xx_insert16(i, buf, len);
qla27xx_insert16(1, buf, len);
qla27xx_insert32(0, buf, len);
qla27xx_insert32(rsp && rsp->in_ptr ?
*rsp->in_ptr : 0, buf, len);
count++;
}
}