Commit c2d89392 authored by John Garry's avatar John Garry Committed by Martin K. Petersen

hisi_sas: add v2 code to send smp command

Signed-off-by: default avatarJohn Garry <john.garry@huawei.com>
Reviewed-by: default avatarHannes Reinecke <hare@suse.de>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 8c36e31d
......@@ -744,6 +744,76 @@ static int prep_prd_sge_v2_hw(struct hisi_hba *hisi_hba,
return 0;
}
static int prep_smp_v2_hw(struct hisi_hba *hisi_hba,
struct hisi_sas_slot *slot)
{
struct sas_task *task = slot->task;
struct hisi_sas_cmd_hdr *hdr = slot->cmd_hdr;
struct domain_device *device = task->dev;
struct device *dev = &hisi_hba->pdev->dev;
struct hisi_sas_port *port = slot->port;
struct scatterlist *sg_req, *sg_resp;
struct hisi_sas_device *sas_dev = device->lldd_dev;
dma_addr_t req_dma_addr;
unsigned int req_len, resp_len;
int elem, rc;
/*
* DMA-map SMP request, response buffers
*/
/* req */
sg_req = &task->smp_task.smp_req;
elem = dma_map_sg(dev, sg_req, 1, DMA_TO_DEVICE);
if (!elem)
return -ENOMEM;
req_len = sg_dma_len(sg_req);
req_dma_addr = sg_dma_address(sg_req);
/* resp */
sg_resp = &task->smp_task.smp_resp;
elem = dma_map_sg(dev, sg_resp, 1, DMA_FROM_DEVICE);
if (!elem) {
rc = -ENOMEM;
goto err_out_req;
}
resp_len = sg_dma_len(sg_resp);
if ((req_len & 0x3) || (resp_len & 0x3)) {
rc = -EINVAL;
goto err_out_resp;
}
/* create header */
/* dw0 */
hdr->dw0 = cpu_to_le32((port->id << CMD_HDR_PORT_OFF) |
(1 << CMD_HDR_PRIORITY_OFF) | /* high pri */
(2 << CMD_HDR_CMD_OFF)); /* smp */
/* map itct entry */
hdr->dw1 = cpu_to_le32((sas_dev->device_id << CMD_HDR_DEV_ID_OFF) |
(1 << CMD_HDR_FRAME_TYPE_OFF) |
(DIR_NO_DATA << CMD_HDR_DIR_OFF));
/* dw2 */
hdr->dw2 = cpu_to_le32((((req_len - 4) / 4) << CMD_HDR_CFL_OFF) |
(HISI_SAS_MAX_SMP_RESP_SZ / 4 <<
CMD_HDR_MRFL_OFF));
hdr->transfer_tags = cpu_to_le32(slot->idx << CMD_HDR_IPTT_OFF);
hdr->cmd_table_addr = cpu_to_le64(req_dma_addr);
hdr->sts_buffer_addr = cpu_to_le64(slot->status_buffer_dma);
return 0;
err_out_resp:
dma_unmap_sg(dev, &slot->task->smp_task.smp_resp, 1,
DMA_FROM_DEVICE);
err_out_req:
dma_unmap_sg(dev, &slot->task->smp_task.smp_req, 1,
DMA_TO_DEVICE);
return rc;
}
static int prep_ssp_v2_hw(struct hisi_hba *hisi_hba,
struct hisi_sas_slot *slot, int is_tmf,
struct hisi_sas_tmf_task *tmf)
......@@ -1395,6 +1465,7 @@ static const struct hisi_sas_hw hisi_sas_v2_hw = {
.hw_init = hisi_sas_v2_init,
.sl_notify = sl_notify_v2_hw,
.get_wideport_bitmap = get_wideport_bitmap_v2_hw,
.prep_smp = prep_smp_v2_hw,
.prep_ssp = prep_ssp_v2_hw,
.get_free_slot = get_free_slot_v2_hw,
.start_delivery = start_delivery_v2_hw,
......
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