scsi: hisi_sas: add v3 code to send SMP frame
Add code to prepare SMP frame. Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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a2204723ac
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fa913de23a
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@ -186,6 +186,9 @@
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#define CMD_HDR_MRFL_MSK (0x1ff << CMD_HDR_MRFL_OFF)
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#define CMD_HDR_SG_MOD_OFF 24
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#define CMD_HDR_SG_MOD_MSK (0x3 << CMD_HDR_SG_MOD_OFF)
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/* dw3 */
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#define CMD_HDR_IPTT_OFF 0
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#define CMD_HDR_IPTT_MSK (0xffff << CMD_HDR_IPTT_OFF)
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/* dw6 */
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#define CMD_HDR_DIF_SGL_LEN_OFF 0
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#define CMD_HDR_DIF_SGL_LEN_MSK (0xffff << CMD_HDR_DIF_SGL_LEN_OFF)
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@ -652,6 +655,76 @@ static int prep_ssp_v3_hw(struct hisi_hba *hisi_hba,
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return 0;
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}
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static int prep_smp_v3_hw(struct hisi_hba *hisi_hba,
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struct hisi_sas_slot *slot)
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{
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struct sas_task *task = slot->task;
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struct hisi_sas_cmd_hdr *hdr = slot->cmd_hdr;
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struct domain_device *device = task->dev;
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struct device *dev = hisi_hba->dev;
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struct hisi_sas_port *port = slot->port;
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struct scatterlist *sg_req, *sg_resp;
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struct hisi_sas_device *sas_dev = device->lldd_dev;
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dma_addr_t req_dma_addr;
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unsigned int req_len, resp_len;
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int elem, rc;
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/*
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* DMA-map SMP request, response buffers
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*/
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/* req */
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sg_req = &task->smp_task.smp_req;
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elem = dma_map_sg(dev, sg_req, 1, DMA_TO_DEVICE);
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if (!elem)
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return -ENOMEM;
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req_len = sg_dma_len(sg_req);
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req_dma_addr = sg_dma_address(sg_req);
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/* resp */
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sg_resp = &task->smp_task.smp_resp;
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elem = dma_map_sg(dev, sg_resp, 1, DMA_FROM_DEVICE);
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if (!elem) {
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rc = -ENOMEM;
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goto err_out_req;
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}
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resp_len = sg_dma_len(sg_resp);
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if ((req_len & 0x3) || (resp_len & 0x3)) {
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rc = -EINVAL;
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goto err_out_resp;
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}
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/* create header */
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/* dw0 */
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hdr->dw0 = cpu_to_le32((port->id << CMD_HDR_PORT_OFF) |
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(1 << CMD_HDR_PRIORITY_OFF) | /* high pri */
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(2 << CMD_HDR_CMD_OFF)); /* smp */
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/* map itct entry */
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hdr->dw1 = cpu_to_le32((sas_dev->device_id << CMD_HDR_DEV_ID_OFF) |
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(1 << CMD_HDR_FRAME_TYPE_OFF) |
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(DIR_NO_DATA << CMD_HDR_DIR_OFF));
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/* dw2 */
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hdr->dw2 = cpu_to_le32((((req_len - 4) / 4) << CMD_HDR_CFL_OFF) |
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(HISI_SAS_MAX_SMP_RESP_SZ / 4 <<
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CMD_HDR_MRFL_OFF));
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hdr->transfer_tags = cpu_to_le32(slot->idx << CMD_HDR_IPTT_OFF);
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hdr->cmd_table_addr = cpu_to_le64(req_dma_addr);
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hdr->sts_buffer_addr = cpu_to_le64(slot->status_buffer_dma);
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return 0;
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err_out_resp:
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dma_unmap_sg(dev, &slot->task->smp_task.smp_resp, 1,
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DMA_FROM_DEVICE);
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err_out_req:
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dma_unmap_sg(dev, &slot->task->smp_task.smp_req, 1,
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DMA_TO_DEVICE);
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return rc;
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}
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static int phy_up_v3_hw(int phy_no, struct hisi_hba *hisi_hba)
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{
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int i, res = 0;
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@ -1225,6 +1298,7 @@ static const struct hisi_sas_hw hisi_sas_v3_hw = {
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.complete_hdr_size = sizeof(struct hisi_sas_complete_v3_hdr),
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.sl_notify = sl_notify_v3_hw,
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.prep_ssp = prep_ssp_v3_hw,
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.prep_smp = prep_smp_v3_hw,
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.get_free_slot = get_free_slot_v3_hw,
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.start_delivery = start_delivery_v3_hw,
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.slot_complete = slot_complete_v3_hw,
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