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scsi: qla2xxx: Ability to process multiple SGEs in Command SGL for CT passthrough commands.

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Signed-off-by: Giridhar Malavali <giridhar.malavali@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Giridhar Malavali
2017-08-23 15:05:23 -07:00
committed by Martin K. Petersen
parent 998722d183
commit ce0779c7d7
1 changed files with 35 additions and 20 deletions
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55
drivers/scsi/qla2xxx/qla_iocb.c
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@ -2682,12 +2682,12 @@ qla24xx_ct_iocb(srb_t *sp, struct ct_entry_24xx *ct_iocb)
uint32_t *cur_dsd;
struct scatterlist *sg;
int index;
uint16_t tot_dsds;
uint16_t cmd_dsds, rsp_dsds;
scsi_qla_host_t *vha = sp->vha;
struct qla_hw_data *ha = vha->hw;
struct bsg_job *bsg_job = sp->u.bsg_job;
int loop_iterartion = 0;
int entry_count = 1;
cont_a64_entry_t *cont_pkt = NULL;
ct_iocb->entry_type = CT_IOCB_TYPE;
ct_iocb->entry_status = 0;
@ -2698,30 +2698,46 @@ qla24xx_ct_iocb(srb_t *sp, struct ct_entry_24xx *ct_iocb)
ct_iocb->vp_index = sp->vha->vp_idx;
ct_iocb->comp_status = cpu_to_le16(0);
ct_iocb->cmd_dsd_count =
cpu_to_le16(bsg_job->request_payload.sg_cnt);
cmd_dsds = bsg_job->request_payload.sg_cnt;
rsp_dsds = bsg_job->reply_payload.sg_cnt;
ct_iocb->cmd_dsd_count = cpu_to_le16(cmd_dsds);
ct_iocb->timeout = 0;
ct_iocb->rsp_dsd_count =
cpu_to_le16(bsg_job->reply_payload.sg_cnt);
ct_iocb->rsp_byte_count =
cpu_to_le32(bsg_job->reply_payload.payload_len);
ct_iocb->rsp_dsd_count = cpu_to_le16(rsp_dsds);
ct_iocb->cmd_byte_count =
cpu_to_le32(bsg_job->request_payload.payload_len);
ct_iocb->dseg_0_address[0] = cpu_to_le32(LSD(sg_dma_address
(bsg_job->request_payload.sg_list)));
ct_iocb->dseg_0_address[1] = cpu_to_le32(MSD(sg_dma_address
(bsg_job->request_payload.sg_list)));
ct_iocb->dseg_0_len = cpu_to_le32(sg_dma_len
(bsg_job->request_payload.sg_list));
avail_dsds = 1;
cur_dsd = (uint32_t *)ct_iocb->dseg_1_address;
avail_dsds = 2;
cur_dsd = (uint32_t *)ct_iocb->dseg_0_address;
index = 0;
tot_dsds = bsg_job->reply_payload.sg_cnt;
for_each_sg(bsg_job->reply_payload.sg_list, sg, tot_dsds, index) {
for_each_sg(bsg_job->request_payload.sg_list, sg, cmd_dsds, index) {
dma_addr_t sle_dma;
/* Allocate additional continuation packets? */
if (avail_dsds == 0) {
/*
* Five DSDs are available in the Cont.
* Type 1 IOCB.
*/
cont_pkt = qla2x00_prep_cont_type1_iocb(
vha, ha->req_q_map[0]);
cur_dsd = (uint32_t *) cont_pkt->dseg_0_address;
avail_dsds = 5;
entry_count++;
}
sle_dma = sg_dma_address(sg);
*cur_dsd++ = cpu_to_le32(LSD(sle_dma));
*cur_dsd++ = cpu_to_le32(MSD(sle_dma));
*cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
avail_dsds--;
}
index = 0;
for_each_sg(bsg_job->reply_payload.sg_list, sg, rsp_dsds, index) {
dma_addr_t sle_dma;
cont_a64_entry_t *cont_pkt;
/* Allocate additional continuation packets? */
if (avail_dsds == 0) {
@ -2740,7 +2756,6 @@ qla24xx_ct_iocb(srb_t *sp, struct ct_entry_24xx *ct_iocb)
*cur_dsd++ = cpu_to_le32(LSD(sle_dma));
*cur_dsd++ = cpu_to_le32(MSD(sle_dma));
*cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
loop_iterartion++;
avail_dsds--;
}
ct_iocb->entry_count = entry_count;