Add @is_cmd to ata_tf_to_fis(). This controls bit 7 of the second
byte which tells the device whether this H2D FIS is for a command or
not. This cleans up ahci a bit and will be used by PMP.
Signed-off-by: Tejun Heo <htejun@xxxxxxxxx>
---
drivers/scsi/ahci.c | 10 ++++------
drivers/scsi/libata-core.c | 14 ++++++++------
drivers/scsi/sata_qstor.c | 2 +-
drivers/scsi/sata_sil24.c | 2 +-
include/linux/libata.h | 3 ++-
5 files changed, 16 insertions(+), 15 deletions(-)
ce524d81b263d170c5c14c90467ac284d5f06252
diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c
index f41db5d..9f2f66a 100644
--- a/drivers/scsi/ahci.c
+++ b/drivers/scsi/ahci.c
@@ -662,8 +662,7 @@ static int ahci_softreset(struct ata_lin
cmd_fis_len | AHCI_CMD_RESET | AHCI_CMD_CLR_BUSY);
tf.ctl |= ATA_SRST;
- ata_tf_to_fis(&tf, fis, 0);
- fis[1] &= ~(1 << 7); /* turn off Command FIS bit */
+ ata_tf_to_fis(&tf, 0, 0, fis);
writel(1, port_mmio + PORT_CMD_ISSUE);
@@ -681,8 +680,7 @@ static int ahci_softreset(struct ata_lin
ahci_fill_cmd_slot(pp, 0, cmd_fis_len);
tf.ctl &= ~ATA_SRST;
- ata_tf_to_fis(&tf, fis, 0);
- fis[1] &= ~(1 << 7); /* turn off Command FIS bit */
+ ata_tf_to_fis(&tf, 0, 0, fis);
writel(1, port_mmio + PORT_CMD_ISSUE);
readl(port_mmio + PORT_CMD_ISSUE); /* flush */
@@ -732,7 +730,7 @@ static int ahci_hardreset(struct ata_lin
/* clear D2H reception area to properly wait for D2H FIS */
ata_tf_init(link->device, &tf);
tf.command = 0xff;
- ata_tf_to_fis(&tf, d2h_fis, 0);
+ ata_tf_to_fis(&tf, 0, 0, d2h_fis);
rc = sata_std_hardreset(link, class);
@@ -825,7 +823,7 @@ static void ahci_qc_prep(struct ata_queu
*/
cmd_tbl = pp->cmd_tbl + qc->tag * AHCI_CMD_TBL_SZ;
- ata_tf_to_fis(&qc->tf, cmd_tbl, 0);
+ ata_tf_to_fis(&qc->tf, 0, 1, cmd_tbl);
if (is_atapi) {
memset(cmd_tbl + AHCI_CMD_TBL_CDB, 0, 32);
memcpy(cmd_tbl + AHCI_CMD_TBL_CDB, qc->cdb, qc->dev->cdb_len);
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index 4d09167..38ddeff 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -100,8 +100,9 @@ MODULE_VERSION(DRV_VERSION);
/**
* ata_tf_to_fis - Convert ATA taskfile to SATA FIS structure
* @tf: Taskfile to convert
- * @fis: Buffer into which data will output
* @pmp: Port multiplier port
+ * @is_cmd: This FIS is for command
+ * @fis: Buffer into which data will output
*
* Converts a standard ATA taskfile to a Serial ATA
* FIS structure (Register - Host to Device).
@@ -109,12 +110,13 @@ MODULE_VERSION(DRV_VERSION);
* LOCKING:
* Inherited from caller.
*/
-
-void ata_tf_to_fis(const struct ata_taskfile *tf, u8 *fis, u8 pmp)
+void ata_tf_to_fis(const struct ata_taskfile *tf, u8 pmp, int is_cmd, u8 *fis)
{
- fis[0] = 0x27; /* Register - Host to Device FIS */
- fis[1] = (pmp & 0xf) | (1 << 7); /* Port multiplier number,
- bit 7 indicates Command FIS */
+ fis[0] = 0x27; /* Register - Host to Device FIS */
+ fis[1] = pmp & 0xf; /* Port multiplier number*/
+ if (is_cmd)
+ fis[1] |= (1 << 7); /* bit 7 indicates Command FIS */
+
fis[2] = tf->command;
fis[3] = tf->feature;
diff --git a/drivers/scsi/sata_qstor.c b/drivers/scsi/sata_qstor.c
index e047890..fca2013 100644
--- a/drivers/scsi/sata_qstor.c
+++ b/drivers/scsi/sata_qstor.c
@@ -336,7 +336,7 @@ static void qs_qc_prep(struct ata_queued
buf[28] = dflags;
/* frame information structure (FIS) */
- ata_tf_to_fis(&qc->tf, &buf[32], 0);
+ ata_tf_to_fis(&qc->tf, 0, 1, &buf[32]);
}
static inline void qs_packet_start(struct ata_queued_cmd *qc)
diff --git a/drivers/scsi/sata_sil24.c b/drivers/scsi/sata_sil24.c
index b2b8d13..b1ae88d 100644
--- a/drivers/scsi/sata_sil24.c
+++ b/drivers/scsi/sata_sil24.c
@@ -706,7 +706,7 @@ static void sil24_qc_prep(struct ata_que
}
prb->ctrl = cpu_to_le16(ctrl);
- ata_tf_to_fis(&qc->tf, prb->fis, 0);
+ ata_tf_to_fis(&qc->tf, qc->dev->link->pmp, 1, prb->fis);
if (qc->flags & ATA_QCFLAG_DMAMAP)
sil24_fill_sg(qc, sge);
diff --git a/include/linux/libata.h b/include/linux/libata.h
index d65bb05..f46b215 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -741,7 +741,8 @@ extern u32 ata_wait_register(void __iome
*/
extern void ata_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
extern void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
-extern void ata_tf_to_fis(const struct ata_taskfile *tf, u8 *fis, u8 pmp);
+extern void ata_tf_to_fis(const struct ata_taskfile *tf,
+ u8 pmp, int is_cmd, u8 *fis);
extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf);
extern void ata_noop_dev_select (struct ata_port *ap, unsigned int device);
extern void ata_std_dev_select (struct ata_port *ap, unsigned int device);
--
1.3.2
-
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