From patchwork Mon Jan 25 18:47:18 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Garry X-Patchwork-Id: 60421 Delivered-To: patch@linaro.org Received: by 10.112.130.2 with SMTP id oa2csp1528754lbb; Mon, 25 Jan 2016 10:43:59 -0800 (PST) X-Received: by 10.66.252.42 with SMTP id zp10mr27976653pac.29.1453747437933; Mon, 25 Jan 2016 10:43:57 -0800 (PST) Return-Path: Received: from vger.kernel.org (vger.kernel.org. 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Tue, 26 Jan 2016 02:35:01 +0800 (CST) Received: from localhost.localdomain (10.67.212.75) by szxeml422-hub.china.huawei.com (10.82.67.152) with Microsoft SMTP Server id 14.3.235.1; Tue, 26 Jan 2016 02:34:52 +0800 From: John Garry To: , , , , , , CC: , , , , , , , , John Garry Subject: [RESEND PATCH v2 18/23] hisi_sas: add v2 code to send smp command Date: Tue, 26 Jan 2016 02:47:18 +0800 Message-ID: <1453747643-61875-19-git-send-email-john.garry@huawei.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1453747643-61875-1-git-send-email-john.garry@huawei.com> References: <1453747643-61875-1-git-send-email-john.garry@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.67.212.75] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020202.56A66AD6.018F, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2013-05-26 15:14:31, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 6553af43a00664d6ce795eedba39ca68 Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Signed-off-by: John Garry --- drivers/scsi/hisi_sas/hisi_sas_v2_hw.c | 71 ++++++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c index ab6ea25..2c6a753 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c @@ -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,