From: Marc Carino <marc.ceeeee@xxxxxxxxx>
Add support for the following ATA opcodes, which are present
in SATA 3.1 and T13 ATA ACS-3:
SEND FPDMA QUEUED
RECEIVE FPDMA QUEUED
Signed-off-by: Marc Carino <marc.ceeeee@xxxxxxxxx>
---
drivers/ata/ahci.h | 8 ++++++++
drivers/ata/libahci.c | 1 +
drivers/ata/libata-core.c | 15 +++++++++++++++
include/linux/ata.h | 25 +++++++++++++++++++++++++
include/linux/libata.h | 6 ++++++
5 files changed, 55 insertions(+)
diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h
index 1145637..f9e4fd8 100644
--- a/drivers/ata/ahci.h
+++ b/drivers/ata/ahci.h
@@ -388,4 +388,12 @@ static inline int ahci_nr_ports(u32 cap)
return (cap & 0x1f) + 1;
}
+static inline void ahci_h2dfis_set_auxiliary(u8 *fis, u32 aux)
+{
+ fis[16] = aux & 0xff;
+ fis[17] = (aux >> 8) & 0xff;
+ fis[18] = (aux >> 16) & 0xff;
+ fis[19] = (aux >> 24) & 0xff;
+}
+
#endif /* _AHCI_H */
diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c
index acfd0f7..52668f4 100644
--- a/drivers/ata/libahci.c
+++ b/drivers/ata/libahci.c
@@ -1499,6 +1499,7 @@ static void ahci_qc_prep(struct ata_queued_cmd *qc)
cmd_tbl = pp->cmd_tbl + qc->tag * AHCI_CMD_TBL_SZ;
ata_tf_to_fis(&qc->tf, qc->dev->link->pmp, 1, cmd_tbl);
+ ahci_h2dfis_set_auxiliary(cmd_tbl, qc->auxiliary);
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/ata/libata-core.c b/drivers/ata/libata-core.c
index c24354d..b0a0b5c 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -2103,6 +2103,7 @@ static int ata_dev_config_ncq(struct ata_device *dev,
int hdepth = 0, ddepth = ata_id_queue_depth(dev->id);
unsigned int err_mask;
char *aa_desc = "";
+ u8 sata_setting[ATA_SECT_SIZE];
if (!ata_id_has_ncq(dev->id)) {
desc[0] = '\0';
@@ -2139,6 +2140,20 @@ static int ata_dev_config_ncq(struct ata_device *dev,
else
snprintf(desc, desc_sz, "NCQ (depth %d/%d)%s", hdepth,
ddepth, aa_desc);
+
+ if (ata_id_has_ncq_send_and_recv(dev->id)) {
+ err_mask = ata_read_log_page(dev,
+ ATA_LOG_NCQ_SEND_RECV,
+ 0,
+ sata_setting,
+ 1);
+ if (!err_mask) {
+ dev->flags |= ATA_DFLAG_NCQ_SEND_RECV;
+ memcpy(dev->ncq_send_recv_cmds, sata_setting,
+ ATA_LOG_NCQ_SEND_RECV_SIZE);
+ }
+ }
+
return 0;
}
diff --git a/include/linux/ata.h b/include/linux/ata.h
index ee0bd95..dd26211 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -239,6 +239,8 @@ enum {
ATA_CMD_WRITE_QUEUED_FUA_EXT = 0x3E,
ATA_CMD_FPDMA_READ = 0x60,
ATA_CMD_FPDMA_WRITE = 0x61,
+ ATA_CMD_FPDMA_SEND = 0x64,
+ ATA_CMD_FPDMA_RECV = 0x65,
ATA_CMD_PIO_READ = 0x20,
ATA_CMD_PIO_READ_EXT = 0x24,
ATA_CMD_PIO_WRITE = 0x30,
@@ -293,8 +295,13 @@ enum {
/* marked obsolete in the ATA/ATAPI-7 spec */
ATA_CMD_RESTORE = 0x10,
+ /* Subcmds for ATA_CMD_FPDMA_SEND */
+ ATA_SUBCMD_FPDMA_SEND_DSM = 0x00,
+ ATA_SUBCMD_FPDMA_SEND_WR_LOG_DMA_EXT = 0x02,
+
/* READ_LOG_EXT pages */
ATA_LOG_SATA_NCQ = 0x10,
+ ATA_LOG_NCQ_SEND_RECV = 0x13,
ATA_LOG_SATA_ID_DEV_DATA = 0x30,
ATA_LOG_SATA_SETTINGS = 0x08,
ATA_LOG_DEVSLP_OFFSET = 0x30,
@@ -305,6 +312,15 @@ enum {
ATA_LOG_DEVSLP_VALID = 0x07,
ATA_LOG_DEVSLP_VALID_MASK = 0x80,
+ /* NCQ send and receive log */
+ ATA_LOG_NCQ_SEND_RECV_SUBCMDS_OFFSET = 0x00,
+ ATA_LOG_NCQ_SEND_RECV_SUBCMDS_DSM = (1 << 0),
+ ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET = 0x04,
+ ATA_LOG_NCQ_SEND_RECV_DSM_TRIM = (1 << 0),
+ ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET = 0x08,
+ ATA_LOG_NCQ_SEND_RECV_WR_LOG_OFFSET = 0x0C,
+ ATA_LOG_NCQ_SEND_RECV_SIZE = 0x10,
+
/* READ/WRITE LONG (obsolete) */
ATA_CMD_READ_LONG = 0x22,
ATA_CMD_READ_LONG_ONCE = 0x23,
@@ -509,6 +525,8 @@ struct ata_taskfile {
u8 device;
u8 command; /* IO operation */
+
+ u32 auxiliary;
};
/*
@@ -865,6 +883,13 @@ static inline int ata_id_rotation_rate(const u16 *id)
return val;
}
+static inline bool ata_id_has_ncq_send_and_recv(const u16 *id)
+{
+ if (id[ATA_ID_SATA_CAPABILITY_2] & BIT(6))
+ return true;
+ return false;
+}
+
static inline bool ata_id_has_trim(const u16 *id)
{
if (ata_id_major_version(id) >= 7 &&
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 4ea55bb..7ec83b7 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -164,6 +164,7 @@ enum {
ATA_DFLAG_DA = (1 << 26), /* device supports Device Attention */
ATA_DFLAG_DEVSLP = (1 << 27), /* device supports Device Sleep */
ATA_DFLAG_ACPI_DISABLED = (1 << 28), /* ACPI for the device is disabled */
+ ATA_DFLAG_NCQ_SEND_RECV = (1 << 29), /* device supports NCQ SEND and RECV */
ATA_DEV_UNKNOWN = 0, /* unknown device */
ATA_DEV_ATA = 1, /* ATA device */
@@ -565,6 +566,7 @@ struct ata_queued_cmd {
struct ata_taskfile tf;
u8 cdb[ATAPI_CDB_LEN];
+ u32 auxiliary;
unsigned long flags; /* ATA_QCFLAG_xxx */
unsigned int tag;
@@ -660,6 +662,9 @@ struct ata_device {
/* DEVSLP Timing Variables from Identify Device Data Log */
u8 devslp_timing[ATA_LOG_DEVSLP_SIZE];
+ /* NCQ send and receive log subcommand support */
+ u8 ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_SIZE];
+
/* error history */
int spdn_cnt;
/* ering is CLEAR_END, read comment above CLEAR_END */
@@ -1556,6 +1561,7 @@ static inline void ata_qc_reinit(struct ata_queued_cmd *qc)
qc->n_elem = 0;
qc->err_mask = 0;
qc->sect_size = ATA_SECT_SIZE;
+ qc->auxiliary = 0;
ata_tf_init(qc->dev, &qc->tf);
--
1.8.1.2
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