p71924506
/
linux_old1
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

scsi: hisi_sas: add v3 code to send ATA frame 

Add code to prepare ATA frame for v3 hw

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>
This commit is contained in:
Xiang Chen 2017-06-14 23:33:27 +08:00 committed by Martin K. Petersen
parent fa913de23a
commit ce60689e12
1 changed files with 106 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

106
drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
View File

@ -171,8 +171,11 @@
#define CMD_HDR_CMD_OFF 29
#define CMD_HDR_CMD_MSK (0x7 << CMD_HDR_CMD_OFF)
/* dw1 */
#define CMD_HDR_UNCON_CMD_OFF 3
#define CMD_HDR_DIR_OFF 5
#define CMD_HDR_DIR_MSK (0x3 << CMD_HDR_DIR_OFF)
#define CMD_HDR_RESET_OFF 7
#define CMD_HDR_RESET_MSK (0x1 << CMD_HDR_RESET_OFF)
#define CMD_HDR_VDTL_OFF 10
#define CMD_HDR_VDTL_MSK (0x1 << CMD_HDR_VDTL_OFF)
#define CMD_HDR_FRAME_TYPE_OFF 11
@ -182,6 +185,8 @@
/* dw2 */
#define CMD_HDR_CFL_OFF 0
#define CMD_HDR_CFL_MSK (0x1ff << CMD_HDR_CFL_OFF)
#define CMD_HDR_NCQ_TAG_OFF 10
#define CMD_HDR_NCQ_TAG_MSK (0x1f << CMD_HDR_NCQ_TAG_OFF)
#define CMD_HDR_MRFL_OFF 15
#define CMD_HDR_MRFL_MSK (0x1ff << CMD_HDR_MRFL_OFF)
#define CMD_HDR_SG_MOD_OFF 24
@ -260,6 +265,11 @@ enum {
#define DIR_TO_DEVICE 2
#define DIR_RESERVED 3
#define CMD_IS_UNCONSTRAINT(cmd) \
((cmd == ATA_CMD_READ_LOG_EXT) || \
(cmd == ATA_CMD_READ_LOG_DMA_EXT) || \
(cmd == ATA_CMD_DEV_RESET))
static u32 hisi_sas_read32(struct hisi_hba *hisi_hba, u32 off)
{
void __iomem *regs = hisi_hba->regs + off;
@ -725,6 +735,101 @@ static int prep_smp_v3_hw(struct hisi_hba *hisi_hba,
return rc;
}
static int get_ncq_tag_v3_hw(struct sas_task *task, u32 *tag)
{
struct ata_queued_cmd *qc = task->uldd_task;
if (qc) {
if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
qc->tf.command == ATA_CMD_FPDMA_READ) {
*tag = qc->tag;
return 1;
}
}
return 0;
}
static int prep_ata_v3_hw(struct hisi_hba *hisi_hba,
struct hisi_sas_slot *slot)
{
struct sas_task *task = slot->task;
struct domain_device *device = task->dev;
struct domain_device *parent_dev = device->parent;
struct hisi_sas_device *sas_dev = device->lldd_dev;
struct hisi_sas_cmd_hdr *hdr = slot->cmd_hdr;
struct asd_sas_port *sas_port = device->port;
struct hisi_sas_port *port = to_hisi_sas_port(sas_port);
u8 *buf_cmd;
int has_data = 0, rc = 0, hdr_tag = 0;
u32 dw1 = 0, dw2 = 0;
hdr->dw0 = cpu_to_le32(port->id << CMD_HDR_PORT_OFF);
if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type))
hdr->dw0 |= cpu_to_le32(3 << CMD_HDR_CMD_OFF);
else
hdr->dw0 |= cpu_to_le32(4 << CMD_HDR_CMD_OFF);
switch (task->data_dir) {
case DMA_TO_DEVICE:
has_data = 1;
dw1 |= DIR_TO_DEVICE << CMD_HDR_DIR_OFF;
break;
case DMA_FROM_DEVICE:
has_data = 1;
dw1 |= DIR_TO_INI << CMD_HDR_DIR_OFF;
break;
default:
dw1 &= ~CMD_HDR_DIR_MSK;
}
if ((task->ata_task.fis.command == ATA_CMD_DEV_RESET) &&
(task->ata_task.fis.control & ATA_SRST))
dw1 |= 1 << CMD_HDR_RESET_OFF;
dw1 |= (hisi_sas_get_ata_protocol(
task->ata_task.fis.command, task->data_dir))
<< CMD_HDR_FRAME_TYPE_OFF;
dw1 |= sas_dev->device_id << CMD_HDR_DEV_ID_OFF;
if (CMD_IS_UNCONSTRAINT(task->ata_task.fis.command))
dw1 |= 1 << CMD_HDR_UNCON_CMD_OFF;
hdr->dw1 = cpu_to_le32(dw1);
/* dw2 */
if (task->ata_task.use_ncq && get_ncq_tag_v3_hw(task, &hdr_tag)) {
task->ata_task.fis.sector_count |= (u8) (hdr_tag << 3);
dw2 |= hdr_tag << CMD_HDR_NCQ_TAG_OFF;
}
dw2 |= (HISI_SAS_MAX_STP_RESP_SZ / 4) << CMD_HDR_CFL_OFF |
2 << CMD_HDR_SG_MOD_OFF;
hdr->dw2 = cpu_to_le32(dw2);
/* dw3 */
hdr->transfer_tags = cpu_to_le32(slot->idx);
if (has_data) {
rc = prep_prd_sge_v3_hw(hisi_hba, slot, hdr, task->scatter,
slot->n_elem);
if (rc)
return rc;
}
hdr->data_transfer_len = cpu_to_le32(task->total_xfer_len);
hdr->cmd_table_addr = cpu_to_le64(slot->command_table_dma);
hdr->sts_buffer_addr = cpu_to_le64(slot->status_buffer_dma);
buf_cmd = slot->command_table;
if (likely(!task->ata_task.device_control_reg_update))
task->ata_task.fis.flags |= 0x80; /* C=1: update ATA cmd reg */
/* fill in command FIS */
memcpy(buf_cmd, &task->ata_task.fis, sizeof(struct host_to_dev_fis));
return 0;
}
static int phy_up_v3_hw(int phy_no, struct hisi_hba *hisi_hba)
{
int i, res = 0;
@ -1299,6 +1404,7 @@ static const struct hisi_sas_hw hisi_sas_v3_hw = {
.sl_notify = sl_notify_v3_hw,
.prep_ssp = prep_ssp_v3_hw,
.prep_smp = prep_smp_v3_hw,
.prep_stp = prep_ata_v3_hw,
.get_free_slot = get_free_slot_v3_hw,
.start_delivery = start_delivery_v3_hw,
.slot_complete = slot_complete_v3_hw,