From: Tejun Heo <htejun@gmail.com>
To: jgarzik@pobox.com, albertcc@tw.ibm.com, linux-ide@vger.kernel.org
Cc: Tejun Heo <htejun@gmail.com>
Subject: [PATCH 2/4] libata: move cdb_len for host to device
Date: Sun, 12 Feb 2006 23:32:58 +0900 [thread overview]
Message-ID: <113975477815-git-send-email-htejun@gmail.com> (raw)
In-Reply-To: <11397547782407-git-send-email-htejun@gmail.com>
cdb_len is per-device property. Sharing cdb_len on ap results in
inaccurate configuration on revalidation and hotplugging. This patch
makes cdb_len per-device.
Signed-off-by: Tejun Heo <htejun@gmail.com>
---
drivers/scsi/ahci.c | 3 ++-
drivers/scsi/libata-core.c | 19 ++++++++++++-------
drivers/scsi/libata-scsi.c | 4 ++--
drivers/scsi/sata_sil24.c | 4 ++--
include/linux/libata.h | 2 +-
5 files changed, 19 insertions(+), 13 deletions(-)
3adaa59ad21ad95f5bad4410b8d4334a3f703185
diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c
index 24a54a5..23caa0c 100644
--- a/drivers/scsi/ahci.c
+++ b/drivers/scsi/ahci.c
@@ -617,7 +617,8 @@ static void ahci_qc_prep(struct ata_queu
ata_tf_to_fis(&qc->tf, pp->cmd_tbl, 0);
if (is_atapi) {
memset(pp->cmd_tbl + AHCI_CMD_TBL_CDB, 0, 32);
- memcpy(pp->cmd_tbl + AHCI_CMD_TBL_CDB, qc->cdb, ap->cdb_len);
+ memcpy(pp->cmd_tbl + AHCI_CMD_TBL_CDB, qc->cdb,
+ qc->dev->cdb_len);
}
n_elem = 0;
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index 01d0ca8..c62798c 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -931,7 +931,7 @@ static void ata_dev_identify(struct ata_
unsigned int using_edd;
struct ata_taskfile tf;
unsigned int err_mask;
- int rc;
+ int i, rc;
if (!ata_dev_present(dev)) {
DPRINTK("ENTER/EXIT (host %u, dev %u) -- nodev\n",
@@ -1087,7 +1087,7 @@ retry:
}
- ap->host->max_cmd_len = 16;
+ dev->cdb_len = 16;
}
/* ATAPI-specific feature tests */
@@ -1100,8 +1100,7 @@ retry:
printk(KERN_WARNING "ata%u: unsupported CDB len\n", ap->id);
goto err_out_nosup;
}
- ap->cdb_len = (unsigned int) rc;
- ap->host->max_cmd_len = (unsigned char) ap->cdb_len;
+ dev->cdb_len = (unsigned int) rc;
/* print device info to dmesg */
printk(KERN_INFO "ata%u: dev %u ATAPI, max %s\n",
@@ -1109,6 +1108,12 @@ retry:
ata_mode_string(xfer_modes));
}
+ ap->host->max_cmd_len = 0;
+ for (i = 0; i < ATA_MAX_DEVICES; i++)
+ ap->host->max_cmd_len = max_t(unsigned int,
+ ap->host->max_cmd_len,
+ ap->device[i].cdb_len);
+
DPRINTK("EXIT, drv_stat = 0x%x\n", ata_chk_status(ap));
return;
@@ -4200,7 +4205,7 @@ static void atapi_packet_task(void *_dat
/* send SCSI cdb */
DPRINTK("send cdb\n");
- WARN_ON(ap->cdb_len < 12);
+ WARN_ON(qc->dev->cdb_len < 12);
if (qc->tf.protocol == ATA_PROT_ATAPI_DMA ||
qc->tf.protocol == ATA_PROT_ATAPI_NODATA) {
@@ -4214,12 +4219,12 @@ static void atapi_packet_task(void *_dat
*/
spin_lock_irqsave(&ap->host_set->lock, flags);
ap->flags &= ~ATA_FLAG_NOINTR;
- ata_data_xfer(ap, qc->cdb, ap->cdb_len, 1);
+ ata_data_xfer(ap, qc->cdb, qc->dev->cdb_len, 1);
if (qc->tf.protocol == ATA_PROT_ATAPI_DMA)
ap->ops->bmdma_start(qc); /* initiate bmdma */
spin_unlock_irqrestore(&ap->host_set->lock, flags);
} else {
- ata_data_xfer(ap, qc->cdb, ap->cdb_len, 1);
+ ata_data_xfer(ap, qc->cdb, qc->dev->cdb_len, 1);
/* PIO commands are handled by polling */
ap->hsm_task_state = HSM_ST;
diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c
index ebd7cf4..3628fed 100644
--- a/drivers/scsi/libata-scsi.c
+++ b/drivers/scsi/libata-scsi.c
@@ -2146,7 +2146,7 @@ static void atapi_request_sense(struct a
ata_sg_init_one(qc, cmd->sense_buffer, sizeof(cmd->sense_buffer));
qc->dma_dir = DMA_FROM_DEVICE;
- memset(&qc->cdb, 0, ap->cdb_len);
+ memset(&qc->cdb, 0, qc->dev->cdb_len);
qc->cdb[0] = REQUEST_SENSE;
qc->cdb[4] = SCSI_SENSE_BUFFERSIZE;
@@ -2248,7 +2248,7 @@ static unsigned int atapi_xlat(struct at
if (ata_check_atapi_dma(qc))
using_pio = 1;
- memcpy(&qc->cdb, scsicmd, qc->ap->cdb_len);
+ memcpy(&qc->cdb, scsicmd, dev->cdb_len);
qc->complete_fn = atapi_qc_complete;
diff --git a/drivers/scsi/sata_sil24.c b/drivers/scsi/sata_sil24.c
index 228a7fa..24020c6 100644
--- a/drivers/scsi/sata_sil24.c
+++ b/drivers/scsi/sata_sil24.c
@@ -371,7 +371,7 @@ static void sil24_dev_config(struct ata_
{
void __iomem *port = (void __iomem *)ap->ioaddr.cmd_addr;
- if (ap->cdb_len == 16)
+ if (dev->cdb_len == 16)
writel(PORT_CS_CDB16, port + PORT_CTRL_STAT);
else
writel(PORT_CS_CDB16, port + PORT_CTRL_CLR);
@@ -543,7 +543,7 @@ static void sil24_qc_prep(struct ata_que
prb = &cb->atapi.prb;
sge = cb->atapi.sge;
memset(cb->atapi.cdb, 0, 32);
- memcpy(cb->atapi.cdb, qc->cdb, ap->cdb_len);
+ memcpy(cb->atapi.cdb, qc->cdb, qc->dev->cdb_len);
if (qc->tf.protocol != ATA_PROT_ATAPI_NODATA) {
if (qc->tf.flags & ATA_TFLAG_WRITE)
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 0853032..853c988 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -348,6 +348,7 @@ struct ata_device {
unsigned int multi_count; /* sectors count for
READ/WRITE MULTIPLE */
+ unsigned int cdb_len;
/* for CHS addressing */
u16 cylinders; /* Number of cylinders */
@@ -377,7 +378,6 @@ struct ata_port {
unsigned int mwdma_mask;
unsigned int udma_mask;
unsigned int cbl; /* cable type; ATA_CBL_xxx */
- unsigned int cdb_len;
struct ata_device device[ATA_MAX_DEVICES];
--
1.1.5
next prev parent reply other threads:[~2006-02-12 14:33 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-12 14:32 [PATCHSET] libata: make some configurations per-dev Tejun Heo
2006-02-12 14:32 ` Tejun Heo [this message]
2006-02-12 14:32 ` [PATCH 1/4] libata: make ata_dev_knobble() per-device Tejun Heo
2006-02-12 19:29 ` Jeff Garzik
2006-02-12 14:32 ` [PATCH 3/4] libata: add per-device max_sectors Tejun Heo
2006-02-12 19:37 ` Jeff Garzik
2006-02-13 0:47 ` Tejun Heo
2006-02-13 4:58 ` Jeff Garzik
2006-02-15 7:24 ` [PATCH] libata: increase LBA48 max sectors to 65535 Tejun Heo
2006-02-15 13:07 ` Jens Axboe
2006-02-15 15:04 ` Tejun Heo
2006-02-15 15:12 ` Jens Axboe
2006-02-15 15:30 ` Tejun Heo
2006-02-15 19:03 ` Mark Lord
2006-02-15 20:21 ` Jeff Garzik
2006-02-15 23:05 ` Mark Lord
2006-02-20 11:23 ` Jeff Garzik
2006-02-20 13:54 ` Mark Lord
2006-02-20 13:58 ` Jens Axboe
2006-02-16 7:42 ` Jens Axboe
2006-02-20 11:25 ` Jeff Garzik
2006-02-20 11:44 ` Jens Axboe
2006-02-20 21:59 ` Jeff Garzik
2006-02-12 14:32 ` [PATCH 4/4] libata: kill sht->max_sectors Tejun Heo
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=113975477815-git-send-email-htejun@gmail.com \
--to=htejun@gmail.com \
--cc=albertcc@tw.ibm.com \
--cc=jgarzik@pobox.com \
--cc=linux-ide@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).