Re: [PATCH Linux 2.6.12-rc5-mm2 07/09] blk: update libata to use the new blk_ordered.

From: Tejun Heo
Date: Sun Jun 05 2005 - 01:17:24 EST

07_blk_update_libata_to_use_new_ordered.patch

Reflect changes in SCSI midlayer and updated to use the new
ordered request implementation.

Signed-off-by: Tejun Heo <htejun@xxxxxxxxx>

drivers/scsi/ahci.c | 1 -
drivers/scsi/ata_piix.c | 1 -
drivers/scsi/libata-core.c | 14 +++++++++-----
drivers/scsi/libata-scsi.c | 22 +++++++++++++++++++++-
drivers/scsi/sata_nv.c | 1 -
drivers/scsi/sata_promise.c | 1 -
drivers/scsi/sata_sil.c | 1 -
drivers/scsi/sata_sis.c | 1 -
drivers/scsi/sata_svw.c | 1 -
drivers/scsi/sata_sx4.c | 1 -
drivers/scsi/sata_uli.c | 1 -
drivers/scsi/sata_via.c | 1 -
drivers/scsi/sata_vsc.c | 1 -
include/linux/ata.h | 4 +++-
include/linux/libata.h | 1 +
15 files changed, 34 insertions(+), 18 deletions(-)

Index: blk-fixes/drivers/scsi/ahci.c
===================================================================
--- blk-fixes.orig/drivers/scsi/ahci.c 2005-06-05 14:50:11.000000000 +0900
+++ blk-fixes/drivers/scsi/ahci.c 2005-06-05 14:53:35.000000000 +0900
@@ -203,7 +203,6 @@ static Scsi_Host_Template ahci_sht = {
.dma_boundary = AHCI_DMA_BOUNDARY,
.slave_configure = ata_scsi_slave_config,
.bios_param = ata_std_bios_param,
- .ordered_flush = 1,
};

static struct ata_port_operations ahci_ops = {
Index: blk-fixes/drivers/scsi/ata_piix.c
===================================================================
--- blk-fixes.orig/drivers/scsi/ata_piix.c 2005-06-05 14:50:11.000000000 +0900
+++ blk-fixes/drivers/scsi/ata_piix.c 2005-06-05 14:53:35.000000000 +0900
@@ -123,7 +123,6 @@ static Scsi_Host_Template piix_sht = {
.dma_boundary = ATA_DMA_BOUNDARY,
.slave_configure = ata_scsi_slave_config,
.bios_param = ata_std_bios_param,
- .ordered_flush = 1,
};

static struct ata_port_operations piix_pata_ops = {
Index: blk-fixes/drivers/scsi/sata_nv.c
===================================================================
--- blk-fixes.orig/drivers/scsi/sata_nv.c 2005-06-05 14:50:11.000000000 +0900
+++ blk-fixes/drivers/scsi/sata_nv.c 2005-06-05 14:53:35.000000000 +0900
@@ -206,7 +206,6 @@ static Scsi_Host_Template nv_sht = {
.dma_boundary = ATA_DMA_BOUNDARY,
.slave_configure = ata_scsi_slave_config,
.bios_param = ata_std_bios_param,
- .ordered_flush = 1,
};

static struct ata_port_operations nv_ops = {
Index: blk-fixes/drivers/scsi/sata_promise.c
===================================================================
--- blk-fixes.orig/drivers/scsi/sata_promise.c 2005-06-05 14:50:11.000000000 +0900
+++ blk-fixes/drivers/scsi/sata_promise.c 2005-06-05 14:53:35.000000000 +0900
@@ -104,7 +104,6 @@ static Scsi_Host_Template pdc_ata_sht =
.dma_boundary = ATA_DMA_BOUNDARY,
.slave_configure = ata_scsi_slave_config,
.bios_param = ata_std_bios_param,
- .ordered_flush = 1,
};

static struct ata_port_operations pdc_ata_ops = {
Index: blk-fixes/drivers/scsi/sata_sil.c
===================================================================
--- blk-fixes.orig/drivers/scsi/sata_sil.c 2005-06-05 14:50:11.000000000 +0900
+++ blk-fixes/drivers/scsi/sata_sil.c 2005-06-05 14:53:35.000000000 +0900
@@ -135,7 +135,6 @@ static Scsi_Host_Template sil_sht = {
.dma_boundary = ATA_DMA_BOUNDARY,
.slave_configure = ata_scsi_slave_config,
.bios_param = ata_std_bios_param,
- .ordered_flush = 1,
};

static struct ata_port_operations sil_ops = {
Index: blk-fixes/drivers/scsi/sata_sis.c
===================================================================
--- blk-fixes.orig/drivers/scsi/sata_sis.c 2005-06-05 14:50:11.000000000 +0900
+++ blk-fixes/drivers/scsi/sata_sis.c 2005-06-05 14:53:35.000000000 +0900
@@ -90,7 +90,6 @@ static Scsi_Host_Template sis_sht = {
.dma_boundary = ATA_DMA_BOUNDARY,
.slave_configure = ata_scsi_slave_config,
.bios_param = ata_std_bios_param,
- .ordered_flush = 1,
};

static struct ata_port_operations sis_ops = {
Index: blk-fixes/drivers/scsi/sata_svw.c
===================================================================
--- blk-fixes.orig/drivers/scsi/sata_svw.c 2005-06-05 14:50:11.000000000 +0900
+++ blk-fixes/drivers/scsi/sata_svw.c 2005-06-05 14:53:35.000000000 +0900
@@ -288,7 +288,6 @@ static Scsi_Host_Template k2_sata_sht =
.proc_info = k2_sata_proc_info,
#endif
.bios_param = ata_std_bios_param,
- .ordered_flush = 1,
};


Index: blk-fixes/drivers/scsi/sata_sx4.c
===================================================================
--- blk-fixes.orig/drivers/scsi/sata_sx4.c 2005-06-05 14:50:11.000000000 +0900
+++ blk-fixes/drivers/scsi/sata_sx4.c 2005-06-05 14:53:35.000000000 +0900
@@ -188,7 +188,6 @@ static Scsi_Host_Template pdc_sata_sht =
.dma_boundary = ATA_DMA_BOUNDARY,
.slave_configure = ata_scsi_slave_config,
.bios_param = ata_std_bios_param,
- .ordered_flush = 1,
};

static struct ata_port_operations pdc_20621_ops = {
Index: blk-fixes/drivers/scsi/sata_uli.c
===================================================================
--- blk-fixes.orig/drivers/scsi/sata_uli.c 2005-06-05 14:50:11.000000000 +0900
+++ blk-fixes/drivers/scsi/sata_uli.c 2005-06-05 14:53:35.000000000 +0900
@@ -82,7 +82,6 @@ static Scsi_Host_Template uli_sht = {
.dma_boundary = ATA_DMA_BOUNDARY,
.slave_configure = ata_scsi_slave_config,
.bios_param = ata_std_bios_param,
- .ordered_flush = 1,
};

static struct ata_port_operations uli_ops = {
Index: blk-fixes/drivers/scsi/sata_via.c
===================================================================
--- blk-fixes.orig/drivers/scsi/sata_via.c 2005-06-05 14:50:11.000000000 +0900
+++ blk-fixes/drivers/scsi/sata_via.c 2005-06-05 14:53:35.000000000 +0900
@@ -102,7 +102,6 @@ static Scsi_Host_Template svia_sht = {
.dma_boundary = ATA_DMA_BOUNDARY,
.slave_configure = ata_scsi_slave_config,
.bios_param = ata_std_bios_param,
- .ordered_flush = 1,
};

static struct ata_port_operations svia_sata_ops = {
Index: blk-fixes/drivers/scsi/sata_vsc.c
===================================================================
--- blk-fixes.orig/drivers/scsi/sata_vsc.c 2005-06-05 14:50:11.000000000 +0900
+++ blk-fixes/drivers/scsi/sata_vsc.c 2005-06-05 14:53:35.000000000 +0900
@@ -206,7 +206,6 @@ static Scsi_Host_Template vsc_sata_sht =
.dma_boundary = ATA_DMA_BOUNDARY,
.slave_configure = ata_scsi_slave_config,
.bios_param = ata_std_bios_param,
- .ordered_flush = 1,
};


Index: blk-fixes/drivers/scsi/libata-core.c
===================================================================
--- blk-fixes.orig/drivers/scsi/libata-core.c 2005-06-05 14:50:11.000000000 +0900
+++ blk-fixes/drivers/scsi/libata-core.c 2005-06-05 14:53:35.000000000 +0900
@@ -510,19 +510,21 @@ void ata_tf_from_fis(u8 *fis, struct ata
}

/**
- * ata_prot_to_cmd - determine which read/write opcodes to use
+ * ata_prot_to_cmd - determine which read/write/fua-write opcodes to use
* @protocol: ATA_PROT_xxx taskfile protocol
* @lba48: true is lba48 is present
*
- * Given necessary input, determine which read/write commands
- * to use to transfer data.
+ * Given necessary input, determine which read/write/fua-write
+ * commands to use to transfer data. Note that we only support
+ * fua-writes on DMA LBA48 protocol. In other cases, we simply
+ * return 0 which is NOP.
*
* LOCKING:
* None.
*/
static int ata_prot_to_cmd(int protocol, int lba48)
{
- int rcmd = 0, wcmd = 0;
+ int rcmd = 0, wcmd = 0, wfua = 0;

switch (protocol) {
case ATA_PROT_PIO:
@@ -539,6 +541,7 @@ static int ata_prot_to_cmd(int protocol,
if (lba48) {
rcmd = ATA_CMD_READ_EXT;
wcmd = ATA_CMD_WRITE_EXT;
+ wfua = ATA_CMD_WRITE_FUA_EXT;
} else {
rcmd = ATA_CMD_READ;
wcmd = ATA_CMD_WRITE;
@@ -549,7 +552,7 @@ static int ata_prot_to_cmd(int protocol,
return -1;
}

- return rcmd | (wcmd << 8);
+ return rcmd | (wcmd << 8) | (wfua << 16);
}

/**
@@ -582,6 +585,7 @@ static void ata_dev_set_protocol(struct

dev->read_cmd = cmd & 0xff;
dev->write_cmd = (cmd >> 8) & 0xff;
+ dev->write_fua_cmd = (cmd >> 16) & 0xff;
}

static const char * xfer_mode_str[] = {
Index: blk-fixes/drivers/scsi/libata-scsi.c
===================================================================
--- blk-fixes.orig/drivers/scsi/libata-scsi.c 2005-06-05 14:50:11.000000000 +0900
+++ blk-fixes/drivers/scsi/libata-scsi.c 2005-06-05 14:53:35.000000000 +0900
@@ -569,6 +569,7 @@ static unsigned int ata_scsi_rw_xlat(str
struct ata_device *dev = qc->dev;
unsigned int lba = tf->flags & ATA_TFLAG_LBA;
unsigned int lba48 = tf->flags & ATA_TFLAG_LBA48;
+ int fua = scsicmd[1] & 0x8;
u64 block = 0;
u32 n_block = 0;

@@ -577,9 +578,26 @@ static unsigned int ata_scsi_rw_xlat(str

if (scsicmd[0] == READ_10 || scsicmd[0] == READ_6 ||
scsicmd[0] == READ_16) {
+ if (fua) {
+ printk(KERN_WARNING
+ "ata%u(%u): WARNING: FUA READ unsupported\n",
+ qc->ap->id, qc->dev->devno);
+ return 1;
+ }
tf->command = qc->dev->read_cmd;
} else {
- tf->command = qc->dev->write_cmd;
+ if (fua) {
+ if (qc->dev->write_fua_cmd == 0 || !lba48) {
+ printk(KERN_WARNING
+ "ata%u(%u): WARNING: FUA WRITE "
+ "unsupported with the current "
+ "protocol/addressing\n",
+ qc->ap->id, qc->dev->devno);
+ return 1;
+ }
+ tf->command = qc->dev->write_fua_cmd;
+ } else
+ tf->command = qc->dev->write_cmd;
tf->flags |= ATA_TFLAG_WRITE;
}

@@ -1205,10 +1223,12 @@ unsigned int ata_scsiop_mode_sense(struc
if (six_byte) {
output_len--;
rbuf[0] = output_len;
+ rbuf[2] |= ata_id_has_fua(args->id) ? 0x10 : 0;
} else {
output_len -= 2;
rbuf[0] = output_len >> 8;
rbuf[1] = output_len;
+ rbuf[3] |= ata_id_has_fua(args->id) ? 0x10 : 0;
}

return 0;
Index: blk-fixes/include/linux/ata.h
===================================================================
--- blk-fixes.orig/include/linux/ata.h 2005-06-05 14:50:11.000000000 +0900
+++ blk-fixes/include/linux/ata.h 2005-06-05 14:53:35.000000000 +0900
@@ -117,6 +117,7 @@ enum {
ATA_CMD_READ_EXT = 0x25,
ATA_CMD_WRITE = 0xCA,
ATA_CMD_WRITE_EXT = 0x35,
+ ATA_CMD_WRITE_FUA_EXT = 0x3D,
ATA_CMD_PIO_READ = 0x20,
ATA_CMD_PIO_READ_EXT = 0x24,
ATA_CMD_PIO_WRITE = 0x30,
@@ -229,7 +230,8 @@ struct ata_taskfile {
#define ata_id_is_sata(id) ((id)[93] == 0)
#define ata_id_rahead_enabled(id) ((id)[85] & (1 << 6))
#define ata_id_wcache_enabled(id) ((id)[85] & (1 << 5))
-#define ata_id_has_flush(id) ((id)[83] & (1 << 12))
+#define ata_id_has_fua(id) ((id)[84] & (1 << 6))
+#define ata_id_has_flush(id) ((id)[83] & (1 << 12))
#define ata_id_has_flush_ext(id) ((id)[83] & (1 << 13))
#define ata_id_has_lba48(id) ((id)[83] & (1 << 10))
#define ata_id_has_wcache(id) ((id)[82] & (1 << 5))
Index: blk-fixes/include/linux/libata.h
===================================================================
--- blk-fixes.orig/include/linux/libata.h 2005-06-05 14:50:11.000000000 +0900
+++ blk-fixes/include/linux/libata.h 2005-06-05 14:53:35.000000000 +0900
@@ -280,6 +280,7 @@ struct ata_device {
u8 xfer_protocol; /* taskfile xfer protocol */
u8 read_cmd; /* opcode to use on read */
u8 write_cmd; /* opcode to use on write */
+ u8 write_fua_cmd; /* opcode to use on FUA write */

/* for CHS addressing */
u16 cylinders; /* Number of cylinders */

-
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