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scsi: hisi_sas: Add v2 hw force PHY function for internal ATA command 

This patch adds a force PHY function for internal ATA command for v2 hw.

Because there is an SoC bug in v2 hw, and need send an IO through each PHY
of a port to work around a bug which occurs after a controller reset.

This force PHY function will be used in the later patch.

Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
hifive-unleashed-5.1
Xiaofei Tan 2018-05-21 18:09:22 +08:00 committed by Martin K. Petersen
parent 78bd2b4f6e
commit b09fcd09e9
2 changed files with 13 additions and 0 deletions
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2
drivers/scsi/hisi_sas/hisi_sas.h
View File

@ -180,6 +180,8 @@ struct hisi_sas_device {
};
struct hisi_sas_tmf_task {
int force_phy;
int phy_id;
u8 tmf;
u16 tag_of_task_to_be_managed;
};

11
drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
View File

@ -296,6 +296,10 @@
#define CMD_HDR_RESP_REPORT_MSK (0x1 << CMD_HDR_RESP_REPORT_OFF)
#define CMD_HDR_TLR_CTRL_OFF 6
#define CMD_HDR_TLR_CTRL_MSK (0x3 << CMD_HDR_TLR_CTRL_OFF)
#define CMD_HDR_PHY_ID_OFF 8
#define CMD_HDR_PHY_ID_MSK (0x1ff << CMD_HDR_PHY_ID_OFF)
#define CMD_HDR_FORCE_PHY_OFF 17
#define CMD_HDR_FORCE_PHY_MSK (0x1 << CMD_HDR_FORCE_PHY_OFF)
#define CMD_HDR_PORT_OFF 18
#define CMD_HDR_PORT_MSK (0xf << CMD_HDR_PORT_OFF)
#define CMD_HDR_PRIORITY_OFF 27
@ -2512,6 +2516,7 @@ static void prep_ata_v2_hw(struct hisi_hba *hisi_hba,
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);
struct hisi_sas_tmf_task *tmf = slot->tmf;
u8 *buf_cmd;
int has_data = 0, hdr_tag = 0;
u32 dw1 = 0, dw2 = 0;
@ -2524,6 +2529,12 @@ static void prep_ata_v2_hw(struct hisi_hba *hisi_hba,
else
hdr->dw0 |= cpu_to_le32(4 << CMD_HDR_CMD_OFF);
if (tmf && tmf->force_phy) {
hdr->dw0 |= CMD_HDR_FORCE_PHY_MSK;
hdr->dw0 |= cpu_to_le32((1 << tmf->phy_id)
<< CMD_HDR_PHY_ID_OFF);
}
/* dw1 */
switch (task->data_dir) {
case DMA_TO_DEVICE: