From: John Garry <john.garry@huawei.com>
To: <JBottomley@odin.com>, <martin.petersen@oracle.com>,
<robh+dt@kernel.org>, <pawel.moll@arm.com>,
<mark.rutland@arm.com>, <ijc+devicetree@hellion.org.uk>,
<galak@codeaurora.org>
Cc: <linuxarm@huawei.com>, <zhangfei.gao@linaro.org>,
<xuwei5@hisilicon.com>, <john.garry2@mail.dcu.ie>,
<linux-scsi@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<arnd@arndb.de>, <devicetree@vger.kernel.org>,
John Garry <john.garry@huawei.com>
Subject: [RESEND PATCH v2 18/23] hisi_sas: add v2 code to send smp command
Date: Tue, 26 Jan 2016 02:47:18 +0800 [thread overview]
Message-ID: <1453747643-61875-19-git-send-email-john.garry@huawei.com> (raw)
In-Reply-To: <1453747643-61875-1-git-send-email-john.garry@huawei.com>
Signed-off-by: John Garry <john.garry@huawei.com>
---
drivers/scsi/hisi_sas/hisi_sas_v2_hw.c | 71 ++++++++++++++++++++++++++++++++++
1 file changed, 71 insertions(+)
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,
--
1.9.1
next prev parent reply other threads:[~2016-01-25 18:44 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-25 18:47 [RESEND PATCH v2 00/23] HiSilicon SAS v2 hw support John Garry
2016-01-25 18:47 ` [RESEND PATCH v2 01/23] devicetree: bindings: hisi_sas: add v2 HW bindings John Garry
2016-01-25 18:47 ` [RESEND PATCH v2 02/23] hisi_sas: relocate DEV_IS_EXPANDER John Garry
2016-01-25 18:47 ` [RESEND PATCH v2 03/23] hisi_sas: set max commands as configurable John Garry
2016-01-25 18:47 ` [RESEND PATCH v2 04/23] hisi_sas: reduce max itct entries John Garry
2016-01-25 18:47 ` [RESEND PATCH v2 05/23] hisi_sas: add hisi_sas_err_record_v1 John Garry
2016-01-25 18:47 ` [RESEND PATCH v2 06/23] hisi_sas: rename some fields in hisi_sas_itct John Garry
2016-01-25 18:47 ` [RESEND PATCH v2 07/23] hisi_sas: add bare v2 hw driver John Garry
2016-01-25 18:47 ` [RESEND PATCH v2 08/23] hisi_sas: add v2 register definitions John Garry
2016-01-25 18:47 ` [RESEND PATCH v2 09/23] hisi_sas: add v2 hw init John Garry
2016-01-25 18:47 ` [RESEND PATCH v2 10/23] hisi_sas: add init_id_frame_v2_hw() John Garry
2016-01-25 18:47 ` [RESEND PATCH v2 11/23] hisi_sas: add v2 phy init code John Garry
2016-01-25 18:47 ` [RESEND PATCH v2 12/23] hisi_sas: add v2 int init and phy up handler John Garry
2016-01-25 18:47 ` [RESEND PATCH v2 13/23] hisi_sas: add v2 phy down handler John Garry
2016-01-25 18:47 ` [RESEND PATCH v2 14/23] hisi_sas: add v2 channel interrupt handler John Garry
2016-01-25 18:47 ` [RESEND PATCH v2 15/23] hisi_sas: add v2 SATA " John Garry
2016-01-25 18:47 ` [RESEND PATCH v2 16/23] hisi_sas: add v2 cq " John Garry
2016-01-25 18:47 ` [RESEND PATCH v2 17/23] hisi_sas: add v2 path to send ssp frame John Garry
2016-01-25 18:47 ` John Garry [this message]
2016-01-25 18:47 ` [RESEND PATCH v2 19/23] hisi_sas: add v2 code for itct setup and free John Garry
2016-01-25 18:47 ` [RESEND PATCH v2 20/23] hisi_sas: add v2 path to send ATA command John Garry
2016-01-25 18:47 ` [RESEND PATCH v2 21/23] hisi_sas: add v2 slot error handler John Garry
2016-01-25 18:47 ` [RESEND PATCH v2 22/23] hisi_sas: add v2 tmf functions John Garry
2016-01-25 18:47 ` [RESEND PATCH v2 23/23] hisi_sas: update driver version to 1.1 John Garry
2016-02-02 2:12 ` [RESEND PATCH v2 00/23] HiSilicon SAS v2 hw support Martin K. Petersen
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