ata_dev_classify() just uses the 'lbah' and 'lbam'
fields from the taskfile, so we can as well use those
as arguments and rip out the custom code from sas_ata.
Cc: Tejun Heo <t...@kernel.org>
Cc: Dan Williams <dan.j.willi...@intel.com>
Signed-off-by: Hannes Reinecke <h...@suse.de>
---
drivers/ata/libahci.c | 11 +++----
drivers/ata/libata-core.c | 14 +++++----
drivers/ata/libata-sff.c | 2 +-
drivers/ata/sata_fsl.c | 11 +++----
drivers/ata/sata_inic162x.c | 2 +-
drivers/ata/sata_sil24.c | 2 +-
drivers/scsi/aic94xx/aic94xx_task.c | 10 +++---
drivers/scsi/isci/request.c | 4 +--
drivers/scsi/libsas/sas_ata.c | 63 +++++--------------------------------
drivers/scsi/mvsas/mv_sas.c | 4 +--
drivers/scsi/pm8001/pm8001_hwi.c | 2 +-
drivers/scsi/pm8001/pm80xx_hwi.c | 2 +-
include/linux/libata.h | 2 +-
include/scsi/libsas.h | 11 ++-----
14 files changed, 44 insertions(+), 96 deletions(-)
diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c
index d72ce04..09f9fcb 100644
--- a/drivers/ata/libahci.c
+++ b/drivers/ata/libahci.c
@@ -1185,16 +1185,15 @@ static void ahci_dev_config(struct ata_device *dev)
unsigned int ahci_dev_classify(struct ata_port *ap)
{
void __iomem *port_mmio = ahci_port_base(ap);
- struct ata_taskfile tf;
+ u8 lbah, lbam, lbal;
u32 tmp;
tmp = readl(port_mmio + PORT_SIG);
- tf.lbah = (tmp >> 24) & 0xff;
- tf.lbam = (tmp >> 16) & 0xff;
- tf.lbal = (tmp >> 8) & 0xff;
- tf.nsect = (tmp) & 0xff;
+ lbah = (tmp >> 24) & 0xff;
+ lbam = (tmp >> 16) & 0xff;
+ lbal = (tmp >> 8) & 0xff;
- return ata_dev_classify(&tf);
+ return ata_dev_classify(lbah, lbam, lbal);
}
EXPORT_SYMBOL_GPL(ahci_dev_classify);
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 18d97d5..2c4d742 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -1032,7 +1032,9 @@ const char *sata_spd_string(unsigned int spd)
/**
* ata_dev_classify - determine device type based on ATA-spec signature
- * @tf: ATA taskfile register set for device to be identified
+ * @lbah: LBA high byte (LBA bits 23:16)
+ * @lbam: LBA mid byte (LBA bits 15:8)
+ * @lbal: LBA low byte (LBA bits 7:0)
*
* Determine from taskfile register contents whether a device is
* ATA or ATAPI, as per "Signature and persistence" section
@@ -1045,7 +1047,7 @@ const char *sata_spd_string(unsigned int spd)
* Device type, %ATA_DEV_ATA, %ATA_DEV_ATAPI, %ATA_DEV_PMP or
* %ATA_DEV_UNKNOWN the event of failure.
*/
-unsigned int ata_dev_classify(const struct ata_taskfile *tf)
+unsigned int ata_dev_classify(u8 lbah, u8 lbam, u8 lbal)
{
/* Apple's open source Darwin code hints that some devices only
* put a proper signature into the LBA mid/high registers,
@@ -1068,22 +1070,22 @@ unsigned int ata_dev_classify(const struct ata_taskfile
*tf)
* SEMB signature. This is worked around in
* ata_dev_read_id().
*/
- if ((tf->lbam == 0) && (tf->lbah == 0)) {
+ if ((lbam == 0) && (lbah == 0)) {
DPRINTK("found ATA device by sig\n");
return ATA_DEV_ATA;
}
- if ((tf->lbam == 0x14) && (tf->lbah == 0xeb)) {
+ if ((lbam == 0x14) && (lbah == 0xeb)) {
DPRINTK("found ATAPI device by sig\n");
return ATA_DEV_ATAPI;
}
- if ((tf->lbam == 0x69) && (tf->lbah == 0x96)) {
+ if ((lbam == 0x69) && (lbah == 0x96)) {
DPRINTK("found PMP device by sig\n");
return ATA_DEV_PMP;
}
- if ((tf->lbam == 0x3c) && (tf->lbah == 0xc3)) {
+ if ((lbam == 0x3c) && (lbah == 0xc3)) {
DPRINTK("found SEMB device by sig (could be ATA device)\n");
return ATA_DEV_SEMB;
}
diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
index 1121153..ec9b5db 100644
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -1903,7 +1903,7 @@ unsigned int ata_sff_dev_classify(struct ata_device *dev,
int present,
return ATA_DEV_NONE;
/* determine if device is ATA or ATAPI */
- class = ata_dev_classify(&tf);
+ class = ata_dev_classify(tf.lbah, tf.lbam, tf.lbal);
if (class == ATA_DEV_UNKNOWN) {
/* If the device failed diagnostic, it's likely to
diff --git a/drivers/ata/sata_fsl.c b/drivers/ata/sata_fsl.c
index 616a6d2..2194fa0 100644
--- a/drivers/ata/sata_fsl.c
+++ b/drivers/ata/sata_fsl.c
@@ -807,8 +807,8 @@ static unsigned int sata_fsl_dev_classify(struct ata_port
*ap)
{
struct sata_fsl_host_priv *host_priv = ap->host->private_data;
void __iomem *hcr_base = host_priv->hcr_base;
- struct ata_taskfile tf;
u32 temp;
+ u8 lbah, lbam, lbal;
temp = ioread32(hcr_base + SIGNATURE);
@@ -816,12 +816,11 @@ static unsigned int sata_fsl_dev_classify(struct ata_port
*ap)
VPRINTK("HStatus = 0x%x\n", ioread32(hcr_base + HSTATUS));
VPRINTK("HControl = 0x%x\n", ioread32(hcr_base + HCONTROL));
- tf.lbah = (temp >> 24) & 0xff;
- tf.lbam = (temp >> 16) & 0xff;
- tf.lbal = (temp >> 8) & 0xff;
- tf.nsect = temp & 0xff;
+ lbah = (temp >> 24) & 0xff;
+ lbam = (temp >> 16) & 0xff;
+ lbal = (temp >> 8) & 0xff;
- return ata_dev_classify(&tf);
+ return ata_dev_classify(lbah, lbam, lbal);
}
static int sata_fsl_hardreset(struct ata_link *link, unsigned int *class,
diff --git a/drivers/ata/sata_inic162x.c b/drivers/ata/sata_inic162x.c
index 0698278..7d95cc4 100644
--- a/drivers/ata/sata_inic162x.c
+++ b/drivers/ata/sata_inic162x.c
@@ -649,7 +649,7 @@ static int inic_hardreset(struct ata_link *link, unsigned
int *class,
}
inic_tf_read(ap, &tf);
- *class = ata_dev_classify(&tf);
+ *class = ata_dev_classify(tf. lbah, tf.lbam, tf.lbal);
}
return 0;
diff --git a/drivers/ata/sata_sil24.c b/drivers/ata/sata_sil24.c
index 0534890..c69ebaf 100644
--- a/drivers/ata/sata_sil24.c
+++ b/drivers/ata/sata_sil24.c
@@ -686,7 +686,7 @@ static int sil24_softreset(struct ata_link *link, unsigned
int *class,
}
sil24_read_tf(ap, 0, &tf);
- *class = ata_dev_classify(&tf);
+ *class = ata_dev_classify(tf. lbah, tf.lbam, tf.lbal);
DPRINTK("EXIT, class=%u\n", *class);
return 0;
diff --git a/drivers/scsi/aic94xx/aic94xx_task.c
b/drivers/scsi/aic94xx/aic94xx_task.c
index 59b86e2..7abbe42 100644
--- a/drivers/scsi/aic94xx/aic94xx_task.c
+++ b/drivers/scsi/aic94xx/aic94xx_task.c
@@ -373,10 +373,10 @@ static int asd_build_ata_ascb(struct asd_ascb *ascb,
struct sas_task *task,
if (unlikely(task->ata_task.device_control_reg_update))
scb->header.opcode = CONTROL_ATA_DEV;
- else if (dev->sata_dev.command_set == ATA_COMMAND_SET)
- scb->header.opcode = INITIATE_ATA_TASK;
- else
+ else if (dev->sata_dev.class == ATA_DEV_ATAPI)
scb->header.opcode = INITIATE_ATAPI_TASK;
+ else
+ scb->header.opcode = INITIATE_ATA_TASK;
scb->ata_task.proto_conn_rate = (1 << 5); /* STP */
if (dev->port->oob_mode == SAS_OOB_MODE)
@@ -387,7 +387,7 @@ static int asd_build_ata_ascb(struct asd_ascb *ascb, struct
sas_task *task,
if (likely(!task->ata_task.device_control_reg_update))
scb->ata_task.fis.flags |= 0x80; /* C=1: update ATA cmd reg */
scb->ata_task.fis.flags &= 0xF0; /* PM_PORT field shall be 0 */
- if (dev->sata_dev.command_set == ATAPI_COMMAND_SET)
+ if (dev->sata_dev.class == ATA_DEV_ATAPI)
memcpy(scb->ata_task.atapi_packet, task->ata_task.atapi_packet,
16);
scb->ata_task.sister_scb = cpu_to_le16(0xFFFF);
@@ -399,7 +399,7 @@ static int asd_build_ata_ascb(struct asd_ascb *ascb, struct
sas_task *task,
if (task->ata_task.dma_xfer)
flags |= DATA_XFER_MODE_DMA;
if (task->ata_task.use_ncq &&
- dev->sata_dev.command_set != ATAPI_COMMAND_SET)
+ dev->sata_dev.class != ATA_DEV_ATAPI)
flags |= ATA_Q_TYPE_NCQ;
flags |= data_dir_flags[task->data_dir];
scb->ata_task.ata_flags = flags;
diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c
index 56e3809..cfd0084 100644
--- a/drivers/scsi/isci/request.c
+++ b/drivers/scsi/isci/request.c
@@ -694,7 +694,7 @@ sci_io_request_construct_sata(struct isci_request *ireq,
}
/* ATAPI */
- if (dev->sata_dev.command_set == ATAPI_COMMAND_SET &&
+ if (dev->sata_dev.class == ATA_DEV_ATAPI &&
task->ata_task.fis.command == ATA_CMD_PACKET) {
sci_atapi_construct(ireq);
return SCI_SUCCESS;
@@ -2980,7 +2980,7 @@ static void sci_request_started_state_enter(struct
sci_base_state_machine *sm)
state = SCI_REQ_SMP_WAIT_RESP;
} else if (task && sas_protocol_ata(task->task_proto) &&
!task->ata_task.use_ncq) {
- if (dev->sata_dev.command_set == ATAPI_COMMAND_SET &&
+ if (dev->sata_dev.class == ATA_DEV_ATAPI &&
task->ata_task.fis.command == ATA_CMD_PACKET) {
state = SCI_REQ_ATAPI_WAIT_H2D;
} else if (task->data_dir == DMA_NONE) {
diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c
index 766098a..865de86 100644
--- a/drivers/scsi/libsas/sas_ata.c
+++ b/drivers/scsi/libsas/sas_ata.c
@@ -138,7 +138,7 @@ static void sas_ata_task_done(struct sas_task *task)
if (stat->stat == SAS_PROTO_RESPONSE || stat->stat == SAM_STAT_GOOD ||
((stat->stat == SAM_STAT_CHECK_CONDITION &&
- dev->sata_dev.command_set == ATAPI_COMMAND_SET))) {
+ dev->sata_dev.class == ATA_DEV_ATAPI))) {
memcpy(dev->sata_dev.fis, resp->ending_fis, ATA_RESP_FIS_SIZE);
if (!link->sactive) {
@@ -278,7 +278,7 @@ static struct sas_internal *dev_to_sas_internal(struct
domain_device *dev)
return to_sas_internal(dev->port->ha->core.shost->transportt);
}
-static void sas_get_ata_command_set(struct domain_device *dev);
+static int sas_get_ata_command_set(struct domain_device *dev);
int sas_get_ata_info(struct domain_device *dev, struct ex_phy *phy)
{
@@ -303,8 +303,7 @@ int sas_get_ata_info(struct domain_device *dev, struct
ex_phy *phy)
}
memcpy(dev->frame_rcvd, &dev->sata_dev.rps_resp.rps.fis,
sizeof(struct dev_to_host_fis));
- /* TODO switch to ata_dev_classify() */
- sas_get_ata_command_set(dev);
+ dev->sata_dev.class = sas_get_ata_command_set(dev);
}
return 0;
}
@@ -425,18 +424,7 @@ static int sas_ata_hard_reset(struct ata_link *link,
unsigned int *class,
if (ret && ret != -EAGAIN)
sas_ata_printk(KERN_ERR, dev, "reset failed (errno=%d)\n", ret);
- /* XXX: if the class changes during the reset the upper layer
- * should be informed, if the device has gone away we assume
- * libsas will eventually delete it
- */
- switch (dev->sata_dev.command_set) {
- case ATA_COMMAND_SET:
- *class = ATA_DEV_ATA;
- break;
- case ATAPI_COMMAND_SET:
- *class = ATA_DEV_ATAPI;
- break;
- }
+ *class = dev->sata_dev.class;
ap->cbl = ATA_CBL_SATA;
return ret;
@@ -626,50 +614,15 @@ void sas_ata_task_abort(struct sas_task *task)
complete(waiting);
}
-static void sas_get_ata_command_set(struct domain_device *dev)
+static int sas_get_ata_command_set(struct domain_device *dev)
{
struct dev_to_host_fis *fis =
(struct dev_to_host_fis *) dev->frame_rcvd;
if (dev->dev_type == SAS_SATA_PENDING)
- return;
+ return ATA_DEV_UNKNOWN;
- if ((fis->sector_count == 1 && /* ATA */
- fis->lbal == 1 &&
- fis->lbam == 0 &&
- fis->lbah == 0 &&
- fis->device == 0)
- ||
- (fis->sector_count == 0 && /* CE-ATA (mATA) */
- fis->lbal == 0 &&
- fis->lbam == 0xCE &&
- fis->lbah == 0xAA &&
- (fis->device & ~0x10) == 0))
-
- dev->sata_dev.command_set = ATA_COMMAND_SET;
-
- else if ((fis->interrupt_reason == 1 && /* ATAPI */
- fis->lbal == 1 &&
- fis->byte_count_low == 0x14 &&
- fis->byte_count_high == 0xEB &&
- (fis->device & ~0x10) == 0))
-
- dev->sata_dev.command_set = ATAPI_COMMAND_SET;
-
- else if ((fis->sector_count == 1 && /* SEMB */
- fis->lbal == 1 &&
- fis->lbam == 0x3C &&
- fis->lbah == 0xC3 &&
- fis->device == 0)
- ||
- (fis->interrupt_reason == 1 && /* SATA PM */
- fis->lbal == 1 &&
- fis->byte_count_low == 0x69 &&
- fis->byte_count_high == 0x96 &&
- (fis->device & ~0x10) == 0))
-
- /* Treat it as a superset? */
- dev->sata_dev.command_set = ATAPI_COMMAND_SET;
+ return ata_dev_classify(fis->lbah, fis->lbam, fis->lbal);
}
void sas_probe_sata(struct asd_sas_port *port)
@@ -775,7 +728,7 @@ int sas_discover_sata(struct domain_device *dev)
if (dev->dev_type == SAS_SATA_PM)
return -ENODEV;
- sas_get_ata_command_set(dev);
+ dev->sata_dev.class = sas_get_ata_command_set(dev);
sas_fill_in_rphy(dev, dev->rphy);
res = sas_notify_lldd_dev_found(dev);
diff --git a/drivers/scsi/mvsas/mv_sas.c b/drivers/scsi/mvsas/mv_sas.c
index 6c1f223..44625b8 100644
--- a/drivers/scsi/mvsas/mv_sas.c
+++ b/drivers/scsi/mvsas/mv_sas.c
@@ -479,7 +479,7 @@ static int mvs_task_prep_ata(struct mvs_info *mvi,
if (task->ata_task.use_ncq)
flags |= MCH_FPDMA;
- if (dev->sata_dev.command_set == ATAPI_COMMAND_SET) {
+ if (dev->sata_dev.class == ATA_DEV_ATAPI) {
if (task->ata_task.fis.command != ATA_CMD_ID_ATAPI)
flags |= MCH_ATAPI;
}
@@ -546,7 +546,7 @@ static int mvs_task_prep_ata(struct mvs_info *mvi,
task->ata_task.fis.flags |= 0x80; /* C=1: update ATA cmd reg */
/* fill in command FIS and ATAPI CDB */
memcpy(buf_cmd, &task->ata_task.fis, sizeof(struct host_to_dev_fis));
- if (dev->sata_dev.command_set == ATAPI_COMMAND_SET)
+ if (dev->sata_dev.class == ATA_DEV_ATAPI)
memcpy(buf_cmd + STP_ATAPI_CMD,
task->ata_task.atapi_packet, 16);
diff --git a/drivers/scsi/pm8001/pm8001_hwi.c b/drivers/scsi/pm8001/pm8001_hwi.c
index a97be01..70f9b45 100644
--- a/drivers/scsi/pm8001/pm8001_hwi.c
+++ b/drivers/scsi/pm8001/pm8001_hwi.c
@@ -4356,7 +4356,7 @@ static int pm8001_chip_sata_req(struct pm8001_hba_info
*pm8001_ha,
PM8001_IO_DBG(pm8001_ha, pm8001_printk("PIO\n"));
}
if (task->ata_task.use_ncq &&
- dev->sata_dev.command_set != ATAPI_COMMAND_SET) {
+ dev->sata_dev.class != ATA_DEV_ATAPI) {
ATAP = 0x07; /* FPDMA */
PM8001_IO_DBG(pm8001_ha, pm8001_printk("FPDMA\n"));
}
diff --git a/drivers/scsi/pm8001/pm80xx_hwi.c b/drivers/scsi/pm8001/pm80xx_hwi.c
index d70587f..b1f47f7 100644
--- a/drivers/scsi/pm8001/pm80xx_hwi.c
+++ b/drivers/scsi/pm8001/pm80xx_hwi.c
@@ -4059,7 +4059,7 @@ static int pm80xx_chip_sata_req(struct pm8001_hba_info
*pm8001_ha,
PM8001_IO_DBG(pm8001_ha, pm8001_printk("PIO\n"));
}
if (task->ata_task.use_ncq &&
- dev->sata_dev.command_set != ATAPI_COMMAND_SET) {
+ dev->sata_dev.class != ATA_DEV_ATAPI) {
ATAP = 0x07; /* FPDMA */
PM8001_IO_DBG(pm8001_ha, pm8001_printk("FPDMA\n"));
}
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 5ab4e3a..3412aee 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -1172,7 +1172,7 @@ extern int ata_std_qc_defer(struct ata_queued_cmd *qc);
extern void ata_noop_qc_prep(struct ata_queued_cmd *qc);
extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
unsigned int n_elem);
-extern unsigned int ata_dev_classify(const struct ata_taskfile *tf);
+extern unsigned int ata_dev_classify(u8 lbah, u8 lbam, u8 lbal);
extern void ata_dev_disable(struct ata_device *adev);
extern void ata_id_string(const u16 *id, unsigned char *s,
unsigned int ofs, unsigned int len);
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
index ef7872c..8528a09 100644
--- a/include/scsi/libsas.h
+++ b/include/scsi/libsas.h
@@ -161,17 +161,12 @@ struct expander_device {
};
/* ---------- SATA device ---------- */
-enum ata_command_set {
- ATA_COMMAND_SET = 0,
- ATAPI_COMMAND_SET = 1,
-};
-
#define ATA_RESP_FIS_SIZE 24
struct sata_device {
- enum ata_command_set command_set;
- struct smp_resp rps_resp; /* report_phy_sata_resp */
- u8 port_no; /* port number, if this is a PM (Port) */
+ unsigned int class;
+ struct smp_resp rps_resp; /* report_phy_sata_resp */
+ u8 port_no; /* port number, if this is a PM (Port) */
struct ata_port *ap;
struct ata_host ata_host;
--
1.7.12.4
--
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