[PATCH 0/8] ide: more IDE probing code rework

[PATCH 0/8] ide: more IDE probing code rework

[Bartlomiej Zolnierkiewicz]

* Convert legacy host drivers to use struct ide_port_info + ide_device_add()
  instead of open-coding initialization of IDE port data structures.

* Add ->cable_detect method for cable detection + use it in PCI host drivers.

* Fix some bugs in the process (handling of "idex=ata66" in atiixp, cs5535
  and scc_pata and handling I/O 32-bit setting in dtc2278 and au1xxx-ide).

diffstat:

 drivers/ide/arm/icside.c          |   25 ++++---
 drivers/ide/arm/ide_arm.c         |    2
 drivers/ide/arm/rapide.c          |    2
 drivers/ide/cris/ide-cris.c       |   18 +++--
 drivers/ide/h8300/ide-h8300.c     |    2
 drivers/ide/ide-generic.c         |    2
 drivers/ide/ide-pnp.c             |    2
 drivers/ide/ide-probe.c           |   87 +++++++++++++++++++++++++-
 drivers/ide/ide.c                 |    6 -
 drivers/ide/legacy/ali14xx.c      |   24 ++-----
 drivers/ide/legacy/buddha.c       |    2
 drivers/ide/legacy/dtc2278.c      |   36 ++++-------
 drivers/ide/legacy/falconide.c    |    2
 drivers/ide/legacy/gayle.c        |    2
 drivers/ide/legacy/ht6560b.c      |   22 +++---
 drivers/ide/legacy/ide_platform.c |    2
 drivers/ide/legacy/macide.c       |   12 ---
 drivers/ide/legacy/q40ide.c       |    2
 drivers/ide/legacy/qd65xx.c       |   23 ++++---
 drivers/ide/legacy/umc8672.c      |   24 ++-----
 drivers/ide/mips/au1xxx-ide.c     |   34 +++-------
 drivers/ide/mips/swarm.c          |    2
 drivers/ide/pci/aec62xx.c         |   25 +++----
 drivers/ide/pci/alim15x3.c        |    5 -
 drivers/ide/pci/amd74xx.c         |   18 ++---
 drivers/ide/pci/atiixp.c          |   30 ++++-----
 drivers/ide/pci/cmd640.c          |   31 ++++-----
 drivers/ide/pci/cmd64x.c          |    5 -
 drivers/ide/pci/cs5520.c          |    2
 drivers/ide/pci/cs5535.c          |   14 +---
 drivers/ide/pci/hpt366.c          |   84 ++++++++++++++-----------
 drivers/ide/pci/it8213.c          |   21 +++---
 drivers/ide/pci/it821x.c          |    5 -
 drivers/ide/pci/jmicron.c         |    6 -
 drivers/ide/pci/pdc202xx_new.c    |    8 --
 drivers/ide/pci/pdc202xx_old.c    |   10 +--
 drivers/ide/pci/piix.c            |    7 --
 drivers/ide/pci/scc_pata.c        |   12 ++-
 drivers/ide/pci/serverworks.c     |    9 --
 drivers/ide/pci/sgiioc4.c         |   18 +++--
 drivers/ide/pci/siimage.c         |    5 -
 drivers/ide/pci/sis5513.c         |    5 -
 drivers/ide/pci/slc90e66.c        |   19 +++--
 drivers/ide/pci/tc86c001.c        |   24 ++++---
 drivers/ide/pci/via82cxxx.c       |    6 -
 drivers/ide/ppc/mpc8xx.c          |    2
 drivers/ide/ppc/pmac.c            |   84 ++++++++++---------------
 drivers/ide/setup-pci.c           |  123 +++++++++++---------------------------
 include/linux/ide.h               |   15 ++++
 49 files changed, 459 insertions(+), 467 deletions(-)

[PATCH 1/8] dtc2278: fix ->io_32bit handling

[Bartlomiej Zolnierkiewicz]

On DTC2278 32-bit I/O has to be enabled for both devices on the port
so always enable it during init time and disallow further changes.

Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/ide.c            |    4 ----
 drivers/ide/legacy/dtc2278.c |   12 ++++++------
 2 files changed, 6 insertions(+), 10 deletions(-)

Index: b/drivers/ide/ide.c
===================================================================
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -791,10 +791,6 @@ int set_io_32bit(ide_drive_t *drive, int
 		return -EBUSY;
 
 	drive->io_32bit = arg;
-#ifdef CONFIG_BLK_DEV_DTC2278
-	if (HWIF(drive)->chipset == ide_dtc2278)
-		HWIF(drive)->drives[!drive->select.b.unit].io_32bit = arg;
-#endif /* CONFIG_BLK_DEV_DTC2278 */
 
 	spin_unlock_irq(&ide_lock);
 
Index: b/drivers/ide/legacy/dtc2278.c
===================================================================
--- a/drivers/ide/legacy/dtc2278.c
+++ b/drivers/ide/legacy/dtc2278.c
@@ -84,12 +84,6 @@ static void dtc2278_set_pio_mode(ide_dri
 		/* Actually we do - there is a data sheet available for the
 		   Winbond but does anyone actually care */
 	}
-
-	/*
-	 * 32bit I/O has to be enabled for *both* drives at the same time.
-	 */
-	drive->io_32bit = 1;
-	HWIF(drive)->drives[!drive->select.b.unit].io_32bit = 1;
 }
 
 static int __init dtc2278_probe(void)
@@ -123,18 +117,24 @@ static int __init dtc2278_probe(void)
 	local_irq_restore(flags);
 
 	hwif->serialized = 1;
+	hwif->no_io_32bit = 1;	/* disallow ->io_32bit changes */
 	hwif->chipset = ide_dtc2278;
 	hwif->pio_mask = ATA_PIO4;
 	hwif->set_pio_mode = &dtc2278_set_pio_mode;
 	hwif->drives[0].no_unmask = 1;
 	hwif->drives[1].no_unmask = 1;
+	hwif->drives[0].io_32bit = 1;
+	hwif->drives[1].io_32bit = 1;
 	hwif->mate = mate;
 
 	mate->serialized = 1;
+	mate->no_io_32bit = 1;
 	mate->chipset = ide_dtc2278;
 	mate->pio_mask = ATA_PIO4;
 	mate->drives[0].no_unmask = 1;
 	mate->drives[1].no_unmask = 1;
+	mate->drives[0].io_32bit = 1;
+	mate->drives[1].io_32bit = 1;
 	mate->mate = hwif;
 	mate->channel = 1;
 

[PATCH 2/8] au1xxx-ide: fix ->io_32bit handling

[Bartlomiej Zolnierkiewicz]

The host driver must set hwif's ->no_io_32bit setting not drive's one
(ide_port_tune_devices() overrides drive's setting).

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/mips/au1xxx-ide.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

Index: b/drivers/ide/mips/au1xxx-ide.c
===================================================================
--- a/drivers/ide/mips/au1xxx-ide.c
+++ b/drivers/ide/mips/au1xxx-ide.c
@@ -658,8 +658,7 @@ static int au_ide_probe(struct device *d
 	hwif->drives[0].autotune        = 1;    /* 1=autotune, 2=noautotune, 0=default */
 	hwif->drives[1].autotune	= 1;
 
-	hwif->drives[0].no_io_32bit	= 1;
-	hwif->drives[1].no_io_32bit	= 1;
+	hwif->no_io_32bit		= 1;
 
 	auide_hwif.hwif                 = hwif;
 	hwif->hwif_data                 = &auide_hwif;

[PATCH 3/8] atiixp/cs5535/scc_pata: fix "idex=ata66" parameter handling

[Bartlomiej Zolnierkiewicz]

Don't override the cable type if the "idex=ata66" parameter was used.

While at it:

* atiixp.c: factor out cable detection to atiixp_cable_detect() from
  init_hwif_atiixp().

* cs5535.c: pass 'ide_hwif_t *hwif' instead of 'struct pci_dev *dev' to
  cs5535_cable_detect().

* scc_pata.c: factor out cable detection to scc_cable_detect() from
  init_hwif_scc() and remove incorrect comment.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
+16 bytes
 drivers/ide/pci/atiixp.c   |   24 +++++++++++++++---------
 drivers/ide/pci/cs5535.c   |    8 ++++----
 drivers/ide/pci/scc_pata.c |    9 +++++++--
 3 files changed, 26 insertions(+), 15 deletions(-)

Index: b/drivers/ide/pci/atiixp.c
===================================================================
--- a/drivers/ide/pci/atiixp.c
+++ b/drivers/ide/pci/atiixp.c
@@ -121,6 +121,19 @@ static void atiixp_set_dma_mode(ide_driv
 	spin_unlock_irqrestore(&atiixp_lock, flags);
 }
 
+static u8 __devinit atiixp_cable_detect(ide_hwif_t *hwif)
+{
+	struct pci_dev *pdev = to_pci_dev(hwif->dev);
+	u8 udma_mode = 0, ch = hwif->channel;
+
+	pci_read_config_byte(pdev, ATIIXP_IDE_UDMA_MODE + ch, &udma_mode);
+
+	if ((udma_mode & 0x07) >= 0x04 || (udma_mode & 0x70) >= 0x40)
+		return ATA_CBL_PATA80;
+	else
+		return ATA_CBL_PATA40;
+}
+
 /**
  *	init_hwif_atiixp		-	fill in the hwif for the ATIIXP
  *	@hwif: IDE interface
@@ -131,21 +144,14 @@ static void atiixp_set_dma_mode(ide_driv
 
 static void __devinit init_hwif_atiixp(ide_hwif_t *hwif)
 {
-	struct pci_dev *pdev = to_pci_dev(hwif->dev);
-	u8 udma_mode = 0, ch = hwif->channel;
-
 	hwif->set_pio_mode = &atiixp_set_pio_mode;
 	hwif->set_dma_mode = &atiixp_set_dma_mode;
 
 	if (!hwif->dma_base)
 		return;
 
-	pci_read_config_byte(pdev, ATIIXP_IDE_UDMA_MODE + ch, &udma_mode);
-
-	if ((udma_mode & 0x07) >= 0x04 || (udma_mode & 0x70) >= 0x40)
-		hwif->cbl = ATA_CBL_PATA80;
-	else
-		hwif->cbl = ATA_CBL_PATA40;
+	if (hwif->cbl != ATA_CBL_PATA40_SHORT)
+		hwif->cbl = atiixp_cable_detect(hwif);
 }
 
 static const struct ide_port_info atiixp_pci_info[] __devinitdata = {
Index: b/drivers/ide/pci/cs5535.c
===================================================================
--- a/drivers/ide/pci/cs5535.c
+++ b/drivers/ide/pci/cs5535.c
@@ -155,8 +155,9 @@ static void cs5535_set_pio_mode(ide_driv
 	cs5535_set_speed(drive, XFER_PIO_0 + pio);
 }
 
-static u8 __devinit cs5535_cable_detect(struct pci_dev *dev)
+static u8 __devinit cs5535_cable_detect(ide_hwif_t *hwif)
 {
+	struct pci_dev *dev = to_pci_dev(hwif->dev);
 	u8 bit;
 
 	/* if a 80 wire cable was detected */
@@ -175,15 +176,14 @@ static u8 __devinit cs5535_cable_detect(
  */
 static void __devinit init_hwif_cs5535(ide_hwif_t *hwif)
 {
-	struct pci_dev *dev = to_pci_dev(hwif->dev);
-
 	hwif->set_pio_mode = &cs5535_set_pio_mode;
 	hwif->set_dma_mode = &cs5535_set_dma_mode;
 
 	if (hwif->dma_base == 0)
 		return;
 
-	hwif->cbl = cs5535_cable_detect(dev);
+	if (hwif->cbl != ATA_CBL_PATA40_SHORT)
+		hwif->cbl = cs5535_cable_detect(hwif);
 }
 
 static const struct ide_port_info cs5535_chipset __devinitdata = {
Index: b/drivers/ide/pci/scc_pata.c
===================================================================
--- a/drivers/ide/pci/scc_pata.c
+++ b/drivers/ide/pci/scc_pata.c
@@ -644,6 +644,11 @@ static void __devinit init_iops_scc(ide_
 	init_mmio_iops_scc(hwif);
 }
 
+static u8 __devinit scc_cable_detect(ide_hwif_t *hwif)
+{
+	return ATA_CBL_PATA80;
+}
+
 /**
  *	init_hwif_scc	-	set up hwif
  *	@hwif: interface to set up
@@ -678,8 +683,8 @@ static void __devinit init_hwif_scc(ide_
 	else
 		hwif->ultra_mask = ATA_UDMA5; /* 100MHz */
 
-	/* we support 80c cable only. */
-	hwif->cbl = ATA_CBL_PATA80;
+	if (hwif->cbl != ATA_CBL_PATA40_SHORT)
+		hwif->cbl = scc_cable_detect(hwif);
 }
 
 #define DECLARE_SCC_DEV(name_str)			\

[PATCH 4/8] macide: remove drive->capacity64 quirk

[Bartlomiej Zolnierkiewicz]

Nowadays IDE core always provides drive ID and ide-disk always setups
drive->capacity64 so this quirk is no longer needed.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/legacy/macide.c |   10 ----------
 1 file changed, 10 deletions(-)

Index: b/drivers/ide/legacy/macide.c
===================================================================
--- a/drivers/ide/legacy/macide.c
+++ b/drivers/ide/legacy/macide.c
@@ -123,16 +123,6 @@ static int __init macide_init(void)
 		ide_init_port_data(hwif, index);
 		ide_init_port_hw(hwif, &hw);
 
-		if (macintosh_config->ide_type == MAC_IDE_BABOON &&
-		    macintosh_config->ident == MAC_MODEL_PB190) {
-			/* Fix breakage in ide-disk.c: drive capacity	*/
-			/* is not initialized for drives without a 	*/
-			/* hardware ID, and we can't get that without	*/
-			/* probing the drive which freezes a 190.	*/
-			ide_drive_t *drive = &hwif->drives[0];
-			drive->capacity64 = drive->cyl*drive->head*drive->sect;
-		}
-
 		hwif->mmio = 1;
 
 		ide_device_add(idx);

[PATCH 5/8] ide: always set DMA masks in ide_pci_setup_ports()

[Bartlomiej Zolnierkiewicz]

Always set DMA masks in ide_pci_setup_ports() to make sure that the valid
masks for a host are set.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
+34 bytes
 drivers/ide/setup-pci.c |   13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

Index: b/drivers/ide/setup-pci.c
===================================================================
--- a/drivers/ide/setup-pci.c
+++ b/drivers/ide/setup-pci.c
@@ -556,10 +556,15 @@ void ide_pci_setup_ports(struct pci_dev 
 			hwif->drives[1].unmask = 1;
 		}
 
-		if (hwif->dma_base) {
-			hwif->swdma_mask = d->swdma_mask;
-			hwif->mwdma_mask = d->mwdma_mask;
-			hwif->ultra_mask = d->udma_mask;
+		hwif->swdma_mask = d->swdma_mask;
+		hwif->mwdma_mask = d->mwdma_mask;
+		hwif->ultra_mask = d->udma_mask;
+
+		if ((d->host_flags && IDE_HFLAG_NO_DMA) == 0 &&
+		    hwif->dma_base == 0) {
+			hwif->swdma_mask = 0;
+			hwif->mwdma_mask = 0;
+			hwif->ultra_mask = 0;
 		}
 
 		hwif->drives[0].autotune = 1;

Re: [PATCH 5/8] ide: always set DMA masks in ide_pci_setup_ports()

[Sergei Shtylyov]

Hello.

Bartlomiej Zolnierkiewicz wrote:

> Always set DMA masks in ide_pci_setup_ports() to make sure that the valid
> masks for a host are set.

> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>

MBR, Sergei

[PATCH 6/8] ide: separate PCI specific init from generic init in ide_pci_setup_ports()

[Bartlomiej Zolnierkiewicz]

* Setup ->mate and ->channel in ide_pci_setup_ports() instead of
  in ide_hwif_configure().

* Make 'port' parameter for ide_hwif_configure() 'unsigned int'.

* Separate PCI specific init from generic init in ide_pci_setup_ports().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
+28 bytes
 drivers/ide/setup-pci.c |   29 +++++++++++++++++++++--------
 1 file changed, 21 insertions(+), 8 deletions(-)

Index: b/drivers/ide/setup-pci.c
===================================================================
--- a/drivers/ide/setup-pci.c
+++ b/drivers/ide/setup-pci.c
@@ -337,7 +337,8 @@ static int ide_pci_check_iomem(struct pc
  *	ide_hwif_configure	-	configure an IDE interface
  *	@dev: PCI device holding interface
  *	@d: IDE port info
- *	@mate: Paired interface if any
+ *	@port: port number
+ *	@irq: PCI IRQ
  *
  *	Perform the initial set up for the hardware interface structure. This
  *	is done per interface port rather than per PCI device. There may be
@@ -346,7 +347,9 @@ static int ide_pci_check_iomem(struct pc
  *	Returns the new hardware interface structure, or NULL on a failure
  */
 
-static ide_hwif_t *ide_hwif_configure(struct pci_dev *dev, const struct ide_port_info *d, ide_hwif_t *mate, int port, int irq)
+static ide_hwif_t *ide_hwif_configure(struct pci_dev *dev,
+				      const struct ide_port_info *d,
+				      unsigned int port, int irq)
 {
 	unsigned long ctl = 0, base = 0;
 	ide_hwif_t *hwif;
@@ -392,12 +395,7 @@ static ide_hwif_t *ide_hwif_configure(st
 
 	hwif->dev = &dev->dev;
 	hwif->cds = d;
-	hwif->channel = port;
 
-	if (mate) {
-		hwif->mate = mate;
-		mate->mate = hwif;
-	}
 	return hwif;
 }
 
@@ -525,10 +523,25 @@ void ide_pci_setup_ports(struct pci_dev 
 			continue;	/* port not enabled */
 		}
 
-		if ((hwif = ide_hwif_configure(dev, d, mate, port, pciirq)) == NULL)
+		hwif = ide_hwif_configure(dev, d, port, pciirq);
+		if (hwif == NULL)
 			continue;
 
 		*(idx + port) = hwif->index;
+	}
+
+	for (port = 0; port < channels; ++port) {
+		if (*(idx + port) == 0xff)
+			continue;
+
+		hwif = &ide_hwifs[*(idx + port)];
+
+		if (mate) {
+			hwif->mate = mate;
+			mate->mate = hwif;
+		}
+
+		hwif->channel = port;
 
 		if (d->init_iops)
 			d->init_iops(hwif);

[PATCH 7/8] ide: add struct ide_port_info instances to legacy host drivers

[Bartlomiej Zolnierkiewicz]

* Remove 'struct pci_dev *dev' argument from ide_hwif_setup_dma().

* Un-static ide_hwif_setup_dma() and add CONFIG_BLK_DEV_IDEDMA_PCI=n version.

* Add 'const struct ide_port_info *d' argument to ide_device_add[_all]().

* Factor out generic ports init from ide_pci_setup_ports() to ide_init_port(),
  move it to ide-probe.c and call it in in ide_device_add_all() instead of
  ide_pci_setup_ports().

* Move ->mate setup to ide_device_add_all() from ide_port_init().

* Add IDE_HFLAG_NO_AUTOTUNE host flag for host drivers that don't enable
  ->autotune currently.

* Setup hwif->chipset in ide_init_port() but iff pi->chipset is set
  (to not override setup done by ide_hwif_configure()).

* Add ETRAX host handling to ide_device_add_all().

* cmd640.c: set IDE_HFLAG_ABUSE_* also for CONFIG_BLK_DEV_CMD640_ENHANCED=n.

* pmac.c: make pmac_ide_setup_dma() return an error value and move DMA masks
  setup to pmac_ide_setup_device().

* Add 'struct ide_port_info' instances to legacy host drivers, pass them to
  ide_device_add() calls and then remove open-coded ports initialization.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/arm/icside.c          |   25 +++++------
 drivers/ide/arm/ide_arm.c         |    2 
 drivers/ide/arm/rapide.c          |    2 
 drivers/ide/cris/ide-cris.c       |   18 ++++----
 drivers/ide/h8300/ide-h8300.c     |    2 
 drivers/ide/ide-generic.c         |    2 
 drivers/ide/ide-pnp.c             |    2 
 drivers/ide/ide-probe.c           |   82 +++++++++++++++++++++++++++++++++++--
 drivers/ide/ide.c                 |    2 
 drivers/ide/legacy/ali14xx.c      |   24 ++++------
 drivers/ide/legacy/buddha.c       |    2 
 drivers/ide/legacy/dtc2278.c      |   24 ++++------
 drivers/ide/legacy/falconide.c    |    2 
 drivers/ide/legacy/gayle.c        |    2 
 drivers/ide/legacy/ht6560b.c      |   22 ++++-----
 drivers/ide/legacy/ide_platform.c |    2 
 drivers/ide/legacy/macide.c       |    2 
 drivers/ide/legacy/q40ide.c       |    2 
 drivers/ide/legacy/qd65xx.c       |   23 +++++-----
 drivers/ide/legacy/umc8672.c      |   24 ++++------
 drivers/ide/mips/au1xxx-ide.c     |   31 ++++----------
 drivers/ide/mips/swarm.c          |    2 
 drivers/ide/pci/cmd640.c          |   31 ++++++--------
 drivers/ide/pci/cs5520.c          |    2 
 drivers/ide/pci/sgiioc4.c         |   18 +++++---
 drivers/ide/ppc/mpc8xx.c          |    2 
 drivers/ide/ppc/pmac.c            |   84 +++++++++++++++-----------------------
 drivers/ide/setup-pci.c           |   81 +++---------------------------------
 include/linux/ide.h               |   13 ++++-
 29 files changed, 259 insertions(+), 271 deletions(-)

Index: b/drivers/ide/arm/icside.c
===================================================================
--- a/drivers/ide/arm/icside.c
+++ b/drivers/ide/arm/icside.c
@@ -377,9 +377,6 @@ static void icside_dma_lost_irq(ide_driv
 
 static void icside_dma_init(ide_hwif_t *hwif)
 {
-	hwif->mwdma_mask	= 7; /* MW0..2 */
-	hwif->swdma_mask	= 7; /* SW0..2 */
-
 	hwif->dmatable_cpu	= NULL;
 	hwif->dmatable_dma	= 0;
 	hwif->set_dma_mode	= icside_set_dma_mode;
@@ -459,11 +456,19 @@ icside_register_v5(struct icside_state *
 
 	idx[0] = hwif->index;
 
-	ide_device_add(idx);
+	ide_device_add(idx, NULL);
 
 	return 0;
 }
 
+static const struct ide_port_info icside_v6_port_info __initdata = {
+	.host_flags		= IDE_HFLAG_SERIALIZE |
+				  IDE_HFLAG_NO_DMA | /* no SFF-style DMA */
+				  IDE_HFLAG_NO_AUTOTUNE,
+	.mwdma_mask		= ATA_MWDMA2,
+	.swdma_mask		= ATA_SWDMA2,
+};
+
 static int __init
 icside_register_v6(struct icside_state *state, struct expansion_card *ec)
 {
@@ -472,6 +477,7 @@ icside_register_v6(struct icside_state *
 	unsigned int sel = 0;
 	int ret;
 	u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
+	struct ide_port_info d = icside_v6_port_info;
 
 	ioc_base = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
 	if (!ioc_base) {
@@ -521,30 +527,25 @@ icside_register_v6(struct icside_state *
 	state->hwif[1]    = mate;
 
 	hwif->maskproc    = icside_maskproc;
-	hwif->channel     = 0;
 	hwif->hwif_data   = state;
-	hwif->mate        = mate;
-	hwif->serialized  = 1;
 	hwif->config_data = (unsigned long)ioc_base;
 	hwif->select_data = sel;
 
 	mate->maskproc    = icside_maskproc;
-	mate->channel     = 1;
 	mate->hwif_data   = state;
-	mate->mate        = hwif;
-	mate->serialized  = 1;
 	mate->config_data = (unsigned long)ioc_base;
 	mate->select_data = sel | 1;
 
 	if (ec->dma != NO_DMA && !request_dma(ec->dma, hwif->name)) {
 		icside_dma_init(hwif);
 		icside_dma_init(mate);
-	}
+	} else
+		d.mwdma_mask = d.swdma_mask = 0;
 
 	idx[0] = hwif->index;
 	idx[1] = mate->index;
 
-	ide_device_add(idx);
+	ide_device_add(idx, &d);
 
 	return 0;
 
Index: b/drivers/ide/arm/ide_arm.c
===================================================================
--- a/drivers/ide/arm/ide_arm.c
+++ b/drivers/ide/arm/ide_arm.c
@@ -39,7 +39,7 @@ static int __init ide_arm_init(void)
 		ide_init_port_hw(hwif, &hw);
 		idx[0] = hwif->index;
 
-		ide_device_add(idx);
+		ide_device_add(idx, NULL);
 	}
 
 	return 0;
Index: b/drivers/ide/arm/rapide.c
===================================================================
--- a/drivers/ide/arm/rapide.c
+++ b/drivers/ide/arm/rapide.c
@@ -58,7 +58,7 @@ rapide_probe(struct expansion_card *ec, 
 
 		idx[0] = hwif->index;
 
-		ide_device_add(idx);
+		ide_device_add(idx, NULL);
 
 		ecard_set_drvdata(ec, hwif);
 		goto out;
Index: b/drivers/ide/cris/ide-cris.c
===================================================================
--- a/drivers/ide/cris/ide-cris.c
+++ b/drivers/ide/cris/ide-cris.c
@@ -753,6 +753,15 @@ static void cris_set_dma_mode(ide_drive_
 		cris_ide_set_speed(TYPE_DMA, 0, strobe, hold);
 }
 
+static const struct ide_port_info cris_port_info __initdata = {
+	.chipset		= ide_etrax100,
+	.host_flags		= IDE_HFLAG_NO_ATAPI_DMA |
+				  IDE_HFLAG_NO_DMA, /* no SFF-style DMA */
+	.pio_mask		= ATA_PIO4,
+	.udma_mask		= cris_ultra_mask,
+	.mwdma_mask		= ATA_MWDMA2,
+};
+
 static int __init init_e100_ide(void)
 {
 	hw_regs_t hw;
@@ -780,7 +789,6 @@ static int __init init_e100_ide(void)
 		ide_init_port_data(hwif, hwif->index);
 		ide_init_port_hw(hwif, &hw);
 		hwif->mmio = 1;
-		hwif->chipset = ide_etrax100;
 		hwif->set_pio_mode = &cris_set_pio_mode;
 		hwif->set_dma_mode = &cris_set_dma_mode;
 		hwif->ata_input_data = &cris_ide_input_data;
@@ -799,12 +807,6 @@ static int __init init_e100_ide(void)
 		hwif->INB = &cris_ide_inb;
 		hwif->INW = &cris_ide_inw;
 		hwif->cbl = ATA_CBL_PATA40;
-		hwif->host_flags |= IDE_HFLAG_NO_ATAPI_DMA;
-		hwif->pio_mask = ATA_PIO4,
-		hwif->drives[0].autotune = 1;
-		hwif->drives[1].autotune = 1;
-		hwif->ultra_mask = cris_ultra_mask;
-		hwif->mwdma_mask = 0x07; /* Multiword DMA 0-2 */
 
 		idx[h] = hwif->index;
 	}
@@ -820,7 +822,7 @@ static int __init init_e100_ide(void)
 	cris_ide_set_speed(TYPE_DMA, 0, ATA_DMA2_STROBE, ATA_DMA2_HOLD);
 	cris_ide_set_speed(TYPE_UDMA, ATA_UDMA2_CYC, ATA_UDMA2_DVS, 0);
 
-	ide_device_add(idx);
+	ide_device_add(idx, &cris_port_info);
 
 	return 0;
 }
Index: b/drivers/ide/h8300/ide-h8300.c
===================================================================
--- a/drivers/ide/h8300/ide-h8300.c
+++ b/drivers/ide/h8300/ide-h8300.c
@@ -114,7 +114,7 @@ static int __init h8300_ide_init(void)
 
 	idx[0] = index;
 
-	ide_device_add(idx);
+	ide_device_add(idx, NULL);
 
 	return 0;
 
Index: b/drivers/ide/ide-generic.c
===================================================================
--- a/drivers/ide/ide-generic.c
+++ b/drivers/ide/ide-generic.c
@@ -23,7 +23,7 @@ static int __init ide_generic_init(void)
 	for (i = 0; i < MAX_HWIFS; i++)
 		idx[i] = ide_hwifs[i].present ? 0xff : i;
 
-	ide_device_add_all(idx);
+	ide_device_add_all(idx, NULL);
 
 	if (ide_hwifs[0].io_ports[IDE_DATA_OFFSET])
 		ide_release_lock();	/* for atari only */
Index: b/drivers/ide/ide-pnp.c
===================================================================
--- a/drivers/ide/ide-pnp.c
+++ b/drivers/ide/ide-pnp.c
@@ -49,7 +49,7 @@ static int idepnp_probe(struct pnp_dev *
 		printk(KERN_INFO "ide%d: generic PnP IDE interface\n", index);
 		pnp_set_drvdata(dev,hwif);
 
-		ide_device_add(idx);
+		ide_device_add(idx, NULL);
 
 		return 0;
 	}
Index: b/drivers/ide/ide-probe.c
===================================================================
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -1289,12 +1289,86 @@ static void hwif_register_devices(ide_hw
 	}
 }
 
-int ide_device_add_all(u8 *idx)
+static void ide_init_port(ide_hwif_t *hwif, unsigned int port,
+			  const struct ide_port_info *d)
 {
-	ide_hwif_t *hwif;
+	if (d->chipset != ide_etrax100)
+		hwif->channel = port;
+
+	if (d->chipset)
+		hwif->chipset = d->chipset;
+
+	if (d->init_iops)
+		d->init_iops(hwif);
+
+	if ((d->host_flags & IDE_HFLAG_NO_DMA) == 0)
+		ide_hwif_setup_dma(hwif, d);
+
+	if ((!hwif->irq && (d->host_flags & IDE_HFLAG_LEGACY_IRQS)) ||
+	    (d->host_flags & IDE_HFLAG_FORCE_LEGACY_IRQS))
+		hwif->irq = port ? 15 : 14;
+
+	hwif->host_flags = d->host_flags;
+	hwif->pio_mask = d->pio_mask;
+
+	if ((d->host_flags & IDE_HFLAG_SERIALIZE) && hwif->mate)
+		hwif->mate->serialized = hwif->serialized = 1;
+
+	if (d->host_flags & IDE_HFLAG_IO_32BIT) {
+		hwif->drives[0].io_32bit = 1;
+		hwif->drives[1].io_32bit = 1;
+	}
+
+	if (d->host_flags & IDE_HFLAG_UNMASK_IRQS) {
+		hwif->drives[0].unmask = 1;
+		hwif->drives[1].unmask = 1;
+	}
+
+	hwif->swdma_mask = d->swdma_mask;
+	hwif->mwdma_mask = d->mwdma_mask;
+	hwif->ultra_mask = d->udma_mask;
+
+	/* reset DMA masks only for SFF-style DMA controllers */
+	if ((d->host_flags && IDE_HFLAG_NO_DMA) == 0 && hwif->dma_base == 0)
+		hwif->swdma_mask = hwif->mwdma_mask = hwif->ultra_mask = 0;
+
+	if ((d->host_flags & IDE_HFLAG_NO_AUTOTUNE) == 0) {
+		hwif->drives[0].autotune = 1;
+		hwif->drives[1].autotune = 1;
+	}
+
+	if (d->host_flags & IDE_HFLAG_RQSIZE_256)
+		hwif->rqsize = 256;
+
+	/* call chipset specific routine for each enabled port */
+	if (d->init_hwif)
+		d->init_hwif(hwif);
+}
+
+int ide_device_add_all(u8 idx[MAX_HWIFS], const struct ide_port_info *d)
+{
+	ide_hwif_t *hwif, *mate = NULL;
 	int i, rc = 0;
 
 	for (i = 0; i < MAX_HWIFS; i++) {
+		if (d == NULL || idx[i] == 0xff) {
+			mate = NULL;
+			continue;
+		}
+
+		hwif = &ide_hwifs[idx[i]];
+
+		if (d->chipset != ide_etrax100 && (i & 1) && mate) {
+			hwif->mate = mate;
+			mate->mate = hwif;
+		}
+
+		mate = (i & 1) ? NULL : hwif;
+
+		ide_init_port(hwif, i & 1, d);
+	}
+
+	for (i = 0; i < MAX_HWIFS; i++) {
 		if (idx[i] == 0xff)
 			continue;
 
@@ -1362,7 +1436,7 @@ int ide_device_add_all(u8 *idx)
 }
 EXPORT_SYMBOL_GPL(ide_device_add_all);
 
-int ide_device_add(u8 idx[4])
+int ide_device_add(u8 idx[4], const struct ide_port_info *d)
 {
 	u8 idx_all[MAX_HWIFS];
 	int i;
@@ -1370,6 +1444,6 @@ int ide_device_add(u8 idx[4])
 	for (i = 0; i < MAX_HWIFS; i++)
 		idx_all[i] = (i < 4) ? idx[i] : 0xff;
 
-	return ide_device_add_all(idx_all);
+	return ide_device_add_all(idx_all, d);
 }
 EXPORT_SYMBOL_GPL(ide_device_add);
Index: b/drivers/ide/ide.c
===================================================================
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -728,7 +728,7 @@ found:
 
 	idx[0] = index;
 
-	ide_device_add(idx);
+	ide_device_add(idx, NULL);
 
 	if (hwifp)
 		*hwifp = hwif;
Index: b/drivers/ide/legacy/ali14xx.c
===================================================================
--- a/drivers/ide/legacy/ali14xx.c
+++ b/drivers/ide/legacy/ali14xx.c
@@ -191,9 +191,14 @@ static int __init initRegisters (void) {
 	return t;
 }
 
+static const struct ide_port_info ali14xx_port_info = {
+	.chipset		= ide_ali14xx,
+	.host_flags		= IDE_HFLAG_NO_DMA | IDE_HFLAG_NO_AUTOTUNE,
+	.pio_mask		= ATA_PIO4,
+};
+
 static int __init ali14xx_probe(void)
 {
-	ide_hwif_t *hwif, *mate;
 	static u8 idx[4] = { 0, 1, 0xff, 0xff };
 
 	printk(KERN_DEBUG "ali14xx: base=0x%03x, regOn=0x%02x.\n",
@@ -205,21 +210,10 @@ static int __init ali14xx_probe(void)
 		return 1;
 	}
 
-	hwif = &ide_hwifs[0];
-	mate = &ide_hwifs[1];
-
-	hwif->chipset = ide_ali14xx;
-	hwif->pio_mask = ATA_PIO4;
-	hwif->set_pio_mode = &ali14xx_set_pio_mode;
-	hwif->mate = mate;
-
-	mate->chipset = ide_ali14xx;
-	mate->pio_mask = ATA_PIO4;
-	mate->set_pio_mode = &ali14xx_set_pio_mode;
-	mate->mate = hwif;
-	mate->channel = 1;
+	ide_hwifs[0].set_pio_mode = &ali14xx_set_pio_mode;
+	ide_hwifs[1].set_pio_mode = &ali14xx_set_pio_mode;
 
-	ide_device_add(idx);
+	ide_device_add(idx, &ali14xx_port_info);
 
 	return 0;
 }
Index: b/drivers/ide/legacy/buddha.c
===================================================================
--- a/drivers/ide/legacy/buddha.c
+++ b/drivers/ide/legacy/buddha.c
@@ -232,7 +232,7 @@ fail_base2:
 			}
 		}
 
-		ide_device_add(idx);
+		ide_device_add(idx, NULL);
 	}
 
 	return 0;
Index: b/drivers/ide/legacy/dtc2278.c
===================================================================
--- a/drivers/ide/legacy/dtc2278.c
+++ b/drivers/ide/legacy/dtc2278.c
@@ -86,6 +86,15 @@ static void dtc2278_set_pio_mode(ide_dri
 	}
 }
 
+static const struct ide_port_info dtc2278_port_info __initdata = {
+	.chipset		= ide_dtc2278,
+	.host_flags		= IDE_HFLAG_SERIALIZE |
+				  IDE_HFLAG_IO_32BIT |
+				  IDE_HFLAG_NO_DMA |
+				  IDE_HFLAG_NO_AUTOTUNE,
+	.pio_mask		= ATA_PIO4,
+};
+
 static int __init dtc2278_probe(void)
 {
 	unsigned long flags;
@@ -116,29 +125,16 @@ static int __init dtc2278_probe(void)
 #endif
 	local_irq_restore(flags);
 
-	hwif->serialized = 1;
 	hwif->no_io_32bit = 1;	/* disallow ->io_32bit changes */
-	hwif->chipset = ide_dtc2278;
-	hwif->pio_mask = ATA_PIO4;
 	hwif->set_pio_mode = &dtc2278_set_pio_mode;
 	hwif->drives[0].no_unmask = 1;
 	hwif->drives[1].no_unmask = 1;
-	hwif->drives[0].io_32bit = 1;
-	hwif->drives[1].io_32bit = 1;
-	hwif->mate = mate;
 
-	mate->serialized = 1;
 	mate->no_io_32bit = 1;
-	mate->chipset = ide_dtc2278;
-	mate->pio_mask = ATA_PIO4;
 	mate->drives[0].no_unmask = 1;
 	mate->drives[1].no_unmask = 1;
-	mate->drives[0].io_32bit = 1;
-	mate->drives[1].io_32bit = 1;
-	mate->mate = hwif;
-	mate->channel = 1;
 
-	ide_device_add(idx);
+	ide_device_add(idx, &dtc2278_port_info);
 
 	return 0;
 }
Index: b/drivers/ide/legacy/falconide.c
===================================================================
--- a/drivers/ide/legacy/falconide.c
+++ b/drivers/ide/legacy/falconide.c
@@ -82,7 +82,7 @@ static int __init falconide_init(void)
 		ide_init_port_data(hwif, index);
 		ide_init_port_hw(hwif, &hw);
 
-		ide_device_add(idx);
+		ide_device_add(idx, NULL);
 	}
     }
 
Index: b/drivers/ide/legacy/gayle.c
===================================================================
--- a/drivers/ide/legacy/gayle.c
+++ b/drivers/ide/legacy/gayle.c
@@ -186,7 +186,7 @@ found:
 	    release_mem_region(res_start, res_n);
     }
 
-    ide_device_add(idx);
+    ide_device_add(idx, NULL);
 
     return 0;
 }
Index: b/drivers/ide/legacy/ht6560b.c
===================================================================
--- a/drivers/ide/legacy/ht6560b.c
+++ b/drivers/ide/legacy/ht6560b.c
@@ -305,6 +305,15 @@ int probe_ht6560b = 0;
 module_param_named(probe, probe_ht6560b, bool, 0);
 MODULE_PARM_DESC(probe, "probe for HT6560B chipset");
 
+static const struct ide_port_info ht6560b_port_info __initdata = {
+	.chipset		= ide_ht6560b,
+	.host_flags		= IDE_HFLAG_SERIALIZE | /* is this needed? */
+				  IDE_HFLAG_NO_DMA |
+				  IDE_HFLAG_NO_AUTOTUNE |
+				  IDE_HFLAG_ABUSE_PREFETCH,
+	.pio_mask		= ATA_PIO5,
+};
+
 static int __init ht6560b_init(void)
 {
 	ide_hwif_t *hwif, *mate;
@@ -328,22 +337,11 @@ static int __init ht6560b_init(void)
 		goto release_region;
 	}
 
-	hwif->chipset = ide_ht6560b;
 	hwif->selectproc = &ht6560b_selectproc;
-	hwif->host_flags = IDE_HFLAG_ABUSE_PREFETCH;
-	hwif->pio_mask = ATA_PIO5;
 	hwif->set_pio_mode = &ht6560b_set_pio_mode;
-	hwif->serialized = 1;	/* is this needed? */
-	hwif->mate = mate;
 
-	mate->chipset = ide_ht6560b;
 	mate->selectproc = &ht6560b_selectproc;
-	mate->host_flags = IDE_HFLAG_ABUSE_PREFETCH;
-	mate->pio_mask = ATA_PIO5;
 	mate->set_pio_mode = &ht6560b_set_pio_mode;
-	mate->serialized = 1;	/* is this needed? */
-	mate->mate = hwif;
-	mate->channel = 1;
 
 	/*
 	 * Setting default configurations for drives
@@ -357,7 +355,7 @@ static int __init ht6560b_init(void)
 	mate->drives[0].drive_data = t;
 	mate->drives[1].drive_data = t;
 
-	ide_device_add(idx);
+	ide_device_add(idx, &ht6560b_port_info);
 
 	return 0;
 
Index: b/drivers/ide/legacy/ide_platform.c
===================================================================
--- a/drivers/ide/legacy/ide_platform.c
+++ b/drivers/ide/legacy/ide_platform.c
@@ -108,7 +108,7 @@ static int __devinit plat_ide_probe(stru
 
 	idx[0] = hwif->index;
 
-	ide_device_add(idx);
+	ide_device_add(idx, NULL);
 
 	platform_set_drvdata(pdev, hwif);
 
Index: b/drivers/ide/legacy/macide.c
===================================================================
--- a/drivers/ide/legacy/macide.c
+++ b/drivers/ide/legacy/macide.c
@@ -125,7 +125,7 @@ static int __init macide_init(void)
 
 		hwif->mmio = 1;
 
-		ide_device_add(idx);
+		ide_device_add(idx, NULL);
 	}
 
 	return 0;
Index: b/drivers/ide/legacy/q40ide.c
===================================================================
--- a/drivers/ide/legacy/q40ide.c
+++ b/drivers/ide/legacy/q40ide.c
@@ -154,7 +154,7 @@ static int __init q40ide_init(void)
 	}
     }
 
-    ide_device_add(idx);
+    ide_device_add(idx, NULL);
 
     return 0;
 }
Index: b/drivers/ide/legacy/qd65xx.c
===================================================================
--- a/drivers/ide/legacy/qd65xx.c
+++ b/drivers/ide/legacy/qd65xx.c
@@ -308,15 +308,10 @@ static int __init qd_testreg(int port)
 static void __init qd_setup(ide_hwif_t *hwif, int base, int config,
 			    unsigned int data0, unsigned int data1)
 {
-	hwif->chipset = ide_qd65xx;
-	hwif->channel = hwif->index;
 	hwif->select_data = base;
 	hwif->config_data = config;
 	hwif->drives[0].drive_data = data0;
 	hwif->drives[1].drive_data = data1;
-	hwif->drives[0].io_32bit =
-	hwif->drives[1].io_32bit = 1;
-	hwif->pio_mask = ATA_PIO4;
 }
 
 /*
@@ -356,6 +351,14 @@ static void __exit qd_unsetup(ide_hwif_t
 }
 */
 
+static const struct ide_port_info qd65xx_port_info __initdata = {
+	.chipset		= ide_qd65xx,
+	.host_flags		= IDE_HFLAG_IO_32BIT |
+				  IDE_HFLAG_NO_DMA |
+				  IDE_HFLAG_NO_AUTOTUNE,
+	.pio_mask		= ATA_PIO4,
+};
+
 /*
  * qd_probe:
  *
@@ -397,9 +400,9 @@ static int __init qd_probe(int base)
 
 		hwif->set_pio_mode = &qd6500_set_pio_mode;
 
-		idx[0] = unit;
+		idx[unit] = unit;
 
-		ide_device_add(idx);
+		ide_device_add(idx, &qd65xx_port_info);
 
 		return 1;
 	}
@@ -431,9 +434,9 @@ static int __init qd_probe(int base)
 
 			hwif->set_pio_mode = &qd6580_set_pio_mode;
 
-			idx[0] = unit;
+			idx[unit] = unit;
 
-			ide_device_add(idx);
+			ide_device_add(idx, &qd65xx_port_info);
 
 			outb(QD_DEF_CONTR, QD_CONTROL_PORT);
 
@@ -460,7 +463,7 @@ static int __init qd_probe(int base)
 			idx[0] = 0;
 			idx[1] = 1;
 
-			ide_device_add(idx);
+			ide_device_add(idx, &qd65xx_port_info);
 
 			outb(QD_DEF_CONTR, QD_CONTROL_PORT);
 
Index: b/drivers/ide/legacy/umc8672.c
===================================================================
--- a/drivers/ide/legacy/umc8672.c
+++ b/drivers/ide/legacy/umc8672.c
@@ -120,9 +120,14 @@ static void umc_set_pio_mode(ide_drive_t
 	spin_unlock_irqrestore(&ide_lock, flags);
 }
 
+static const struct ide_port_info umc8672_port_info __initdata = {
+	.chipset		= ide_umc8672,
+	.host_flags		= IDE_HFLAG_NO_DMA | IDE_HFLAG_NO_AUTOTUNE,
+	.pio_mask		= ATA_PIO4,
+};
+
 static int __init umc8672_probe(void)
 {
-	ide_hwif_t *hwif, *mate;
 	unsigned long flags;
 	static u8 idx[4] = { 0, 1, 0xff, 0xff };
 
@@ -143,21 +148,10 @@ static int __init umc8672_probe(void)
 	umc_set_speeds (current_speeds);
 	local_irq_restore(flags);
 
-	hwif = &ide_hwifs[0];
-	mate = &ide_hwifs[1];
-
-	hwif->chipset = ide_umc8672;
-	hwif->pio_mask = ATA_PIO4;
-	hwif->set_pio_mode = &umc_set_pio_mode;
-	hwif->mate = mate;
-
-	mate->chipset = ide_umc8672;
-	mate->pio_mask = ATA_PIO4;
-	mate->set_pio_mode = &umc_set_pio_mode;
-	mate->mate = hwif;
-	mate->channel = 1;
+	ide_hwifs[0].set_pio_mode = &umc_set_pio_mode;
+	ide_hwifs[1].set_pio_mode = &umc_set_pio_mode;
 
-	ide_device_add(idx);
+	ide_device_add(idx, &umc8672_port_info);
 
 	return 0;
 }
Index: b/drivers/ide/mips/au1xxx-ide.c
===================================================================
--- a/drivers/ide/mips/au1xxx-ide.c
+++ b/drivers/ide/mips/au1xxx-ide.c
@@ -548,6 +548,16 @@ static void auide_setup_ports(hw_regs_t 
 	*ata_regs = ahwif->regbase + (14 << AU1XXX_ATA_REG_OFFSET);
 }
 
+static const struct ide_port_info au1xxx_port_info = {
+	.host_flags		= IDE_HFLAG_POST_SET_MODE |
+				  IDE_HFLAG_NO_DMA | /* no SFF-style DMA */
+				  IDE_HFLAG_UNMASK_IRQS,
+	.pio_mask		= ATA_PIO4,
+#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
+	.mwdma_mask		= ATA_MWDMA2,
+#endif
+};
+
 static int au_ide_probe(struct device *dev)
 {
 	struct platform_device *pdev = to_platform_device(dev);
@@ -606,21 +616,6 @@ static int au_ide_probe(struct device *d
 
 	hwif->dev = dev;
 
-	hwif->ultra_mask                = 0x0;  /* Disable Ultra DMA */
-#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
-	hwif->mwdma_mask                = 0x07; /* Multimode-2 DMA  */
-	hwif->swdma_mask                = 0x00;
-#else
-	hwif->mwdma_mask                = 0x0;
-	hwif->swdma_mask                = 0x0;
-#endif
-
-	hwif->pio_mask = ATA_PIO4;
-	hwif->host_flags = IDE_HFLAG_POST_SET_MODE;
-
-	hwif->drives[0].unmask          = 1;
-	hwif->drives[1].unmask          = 1;
-
 	/* hold should be on in all cases */
 	hwif->hold                      = 1;
 
@@ -651,13 +646,9 @@ static int au_ide_probe(struct device *d
 	hwif->ide_dma_test_irq          = &auide_dma_test_irq;
 	hwif->dma_lost_irq		= &auide_dma_lost_irq;
 #endif
-	hwif->channel                   = 0;
 	hwif->select_data               = 0;    /* no chipset-specific code */
 	hwif->config_data               = 0;    /* no chipset-specific code */
 
-	hwif->drives[0].autotune        = 1;    /* 1=autotune, 2=noautotune, 0=default */
-	hwif->drives[1].autotune	= 1;
-
 	hwif->no_io_32bit		= 1;
 
 	auide_hwif.hwif                 = hwif;
@@ -670,7 +661,7 @@ static int au_ide_probe(struct device *d
 
 	idx[0] = hwif->index;
 
-	ide_device_add(idx);
+	ide_device_add(idx, &au1xxx_port_info);
 
 	dev_set_drvdata(dev, hwif);
 
Index: b/drivers/ide/mips/swarm.c
===================================================================
--- a/drivers/ide/mips/swarm.c
+++ b/drivers/ide/mips/swarm.c
@@ -129,7 +129,7 @@ static int __devinit swarm_ide_probe(str
 
 	idx[0] = hwif->index;
 
-	ide_device_add(idx);
+	ide_device_add(idx, NULL);
 
 	dev_set_drvdata(dev, hwif);
 
Index: b/drivers/ide/pci/cmd640.c
===================================================================
--- a/drivers/ide/pci/cmd640.c
+++ b/drivers/ide/pci/cmd640.c
@@ -703,6 +703,18 @@ static int pci_conf2(void)
 	return 0;
 }
 
+static const struct ide_port_info cmd640_port_info __initdata = {
+	.chipset		= ide_cmd640,
+	.host_flags		= IDE_HFLAG_SERIALIZE |
+				  IDE_HFLAG_NO_DMA |
+				  IDE_HFLAG_NO_AUTOTUNE |
+				  IDE_HFLAG_ABUSE_PREFETCH |
+				  IDE_HFLAG_ABUSE_FAST_DEVSEL,
+#ifdef CONFIG_BLK_DEV_CMD640_ENHANCED
+	.pio_mask		= ATA_PIO5,
+#endif
+};
+
 /*
  * Probe for a cmd640 chipset, and initialize it if found.
  */
@@ -760,11 +772,7 @@ static int __init cmd640x_init(void)
 	setup_device_ptrs ();
 	printk("%s: buggy cmd640%c interface on %s, config=0x%02x\n",
 	       cmd_hwif0->name, 'a' + cmd640_chip_version - 1, bus_type, cfr);
-	cmd_hwif0->chipset = ide_cmd640;
 #ifdef CONFIG_BLK_DEV_CMD640_ENHANCED
-	cmd_hwif0->host_flags = IDE_HFLAG_ABUSE_PREFETCH |
-				IDE_HFLAG_ABUSE_FAST_DEVSEL;
-	cmd_hwif0->pio_mask = ATA_PIO5;
 	cmd_hwif0->set_pio_mode = &cmd640_set_pio_mode;
 #endif /* CONFIG_BLK_DEV_CMD640_ENHANCED */
 
@@ -815,23 +823,14 @@ static int __init cmd640x_init(void)
 	 * Initialize data for secondary cmd640 port, if enabled
 	 */
 	if (second_port_cmd640) {
-		cmd_hwif0->serialized = 1;
-		cmd_hwif1->serialized = 1;
-		cmd_hwif1->chipset = ide_cmd640;
-		cmd_hwif0->mate = cmd_hwif1;
-		cmd_hwif1->mate = cmd_hwif0;
-		cmd_hwif1->channel = 1;
-#ifdef CONFIG_BLK_DEV_CMD640_ENHANCED
-		cmd_hwif1->host_flags = IDE_HFLAG_ABUSE_PREFETCH |
-					IDE_HFLAG_ABUSE_FAST_DEVSEL;
-		cmd_hwif1->pio_mask = ATA_PIO5;
+#ifdef CONFIG_BLK_DEV_CMD640_ENHANCED
 		cmd_hwif1->set_pio_mode = &cmd640_set_pio_mode;
 #endif /* CONFIG_BLK_DEV_CMD640_ENHANCED */
 
 		idx[1] = cmd_hwif1->index;
 	}
 	printk(KERN_INFO "%s: %sserialized, secondary interface %s\n", cmd_hwif1->name,
-		cmd_hwif0->serialized ? "" : "not ", port2);
+			 second_port_cmd640 ? "" : "not ", port2);
 
 	/*
 	 * Establish initial timings/prefetch for all drives.
@@ -876,7 +875,7 @@ static int __init cmd640x_init(void)
 	cmd640_dump_regs();
 #endif
 
-	ide_device_add(idx);
+	ide_device_add(idx, &cmd640_port_info);
 
 	return 1;
 }
Index: b/drivers/ide/pci/cs5520.c
===================================================================
--- a/drivers/ide/pci/cs5520.c
+++ b/drivers/ide/pci/cs5520.c
@@ -174,7 +174,7 @@ static int __devinit cs5520_init_one(str
 
 	ide_pci_setup_ports(dev, d, 14, &idx[0]);
 
-	ide_device_add(idx);
+	ide_device_add(idx, d);
 
 	return 0;
 }
Index: b/drivers/ide/pci/sgiioc4.c
===================================================================
--- a/drivers/ide/pci/sgiioc4.c
+++ b/drivers/ide/pci/sgiioc4.c
@@ -555,7 +555,6 @@ static void __devinit
 ide_init_sgiioc4(ide_hwif_t * hwif)
 {
 	hwif->mmio = 1;
-	hwif->pio_mask = 0x00;
 	hwif->set_pio_mode = NULL; /* Sets timing for PIO mode */
 	hwif->set_dma_mode = &sgiioc4_set_dma_mode;
 	hwif->selectproc = NULL;/* Use the default routine to select drive */
@@ -572,8 +571,6 @@ ide_init_sgiioc4(ide_hwif_t * hwif)
 	if (hwif->dma_base == 0)
 		return;
 
-	hwif->mwdma_mask = ATA_MWDMA2_ONLY;
-
 	hwif->dma_host_set = &sgiioc4_dma_host_set;
 	hwif->dma_setup = &sgiioc4_ide_dma_setup;
 	hwif->dma_start = &sgiioc4_ide_dma_start;
@@ -583,6 +580,13 @@ ide_init_sgiioc4(ide_hwif_t * hwif)
 	hwif->dma_timeout = &ide_dma_timeout;
 }
 
+static const struct ide_port_info sgiioc4_port_info __devinitdata = {
+	.chipset		= ide_pci,
+	.host_flags		= IDE_HFLAG_NO_DMA | /* no SFF-style DMA */
+				  IDE_HFLAG_NO_AUTOTUNE,
+	.mwdma_mask		= ATA_MWDMA2_ONLY,
+};
+
 static int __devinit
 sgiioc4_ide_setup_pci_device(struct pci_dev *dev)
 {
@@ -593,6 +597,7 @@ sgiioc4_ide_setup_pci_device(struct pci_
 	int h;
 	u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
 	hw_regs_t hw;
+	struct ide_port_info d = sgiioc4_port_info;
 
 	/*
 	 * Find an empty HWIF; if none available, return -ENOMEM.
@@ -641,7 +646,6 @@ sgiioc4_ide_setup_pci_device(struct pci_
 	ide_init_port_hw(hwif, &hw);
 
 	hwif->dev = &dev->dev;
-	hwif->channel = 0;	/* Single Channel chip */
 
 	/* The IOC4 uses MMIO rather than Port IO. */
 	default_hwif_mmiops(hwif);
@@ -649,15 +653,17 @@ sgiioc4_ide_setup_pci_device(struct pci_
 	/* Initializing chipset IRQ Registers */
 	writel(0x03, (void __iomem *)(irqport + IOC4_INTR_SET * 4));
 
-	if (dma_base == 0 || ide_dma_sgiioc4(hwif, dma_base))
+	if (dma_base == 0 || ide_dma_sgiioc4(hwif, dma_base)) {
 		printk(KERN_INFO "%s: %s Bus-Master DMA disabled\n",
 				 hwif->name, DRV_NAME);
+		d.mwdma_mask = 0;
+	}
 
 	ide_init_sgiioc4(hwif);
 
 	idx[0] = hwif->index;
 
-	if (ide_device_add(idx))
+	if (ide_device_add(idx, &d))
 		return -EIO;
 
 	return 0;
Index: b/drivers/ide/ppc/mpc8xx.c
===================================================================
--- a/drivers/ide/ppc/mpc8xx.c
+++ b/drivers/ide/ppc/mpc8xx.c
@@ -848,7 +848,7 @@ static int __init mpc8xx_ide_probe(void)
 #endif
 #endif
 
-	ide_device_add(idx);
+	ide_device_add(idx, NULL);
 
 	return 0;
 }
Index: b/drivers/ide/ppc/pmac.c
===================================================================
--- a/drivers/ide/ppc/pmac.c
+++ b/drivers/ide/ppc/pmac.c
@@ -412,7 +412,7 @@ kauai_lookup_timing(struct kauai_timing*
  */
 #define IDE_WAKEUP_DELAY	(1*HZ)
 
-static void pmac_ide_setup_dma(pmac_ide_hwif_t *pmif, ide_hwif_t *hwif);
+static int pmac_ide_setup_dma(pmac_ide_hwif_t *pmif, ide_hwif_t *hwif);
 static int pmac_ide_build_dmatable(ide_drive_t *drive, struct request *rq);
 static void pmac_ide_selectproc(ide_drive_t *drive);
 static void pmac_ide_kauai_selectproc(ide_drive_t *drive);
@@ -1003,6 +1003,17 @@ pmac_ide_do_resume(ide_hwif_t *hwif)
 	return 0;
 }
 
+static const struct ide_port_info pmac_port_info = {
+	.chipset		= ide_pmac,
+	.host_flags		= IDE_HFLAG_SET_PIO_MODE_KEEP_DMA |
+				  IDE_HFLAG_PIO_NO_DOWNGRADE |
+				  IDE_HFLAG_POST_SET_MODE |
+				  IDE_HFLAG_NO_DMA | /* no SFF-style DMA */
+				  IDE_HFLAG_UNMASK_IRQS,
+	.pio_mask		= ATA_PIO4,
+	.mwdma_mask		= ATA_MWDMA2,
+};
+
 /*
  * Setup, register & probe an IDE channel driven by this driver, this is
  * called by one of the 2 probe functions (macio or PCI). Note that a channel
@@ -1016,23 +1027,28 @@ pmac_ide_setup_device(pmac_ide_hwif_t *p
 	struct device_node *np = pmif->node;
 	const int *bidp;
 	u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
+	struct ide_port_info d = pmac_port_info;
 
 	pmif->cable_80 = 0;
 	pmif->broken_dma = pmif->broken_dma_warn = 0;
-	if (of_device_is_compatible(np, "shasta-ata"))
+	if (of_device_is_compatible(np, "shasta-ata")) {
 		pmif->kind = controller_sh_ata6;
-	else if (of_device_is_compatible(np, "kauai-ata"))
+		d.udma_mask = ATA_UDMA6;
+	} else if (of_device_is_compatible(np, "kauai-ata")) {
 		pmif->kind = controller_un_ata6;
-	else if (of_device_is_compatible(np, "K2-UATA"))
+		d.udma_mask = ATA_UDMA5;
+	} else if (of_device_is_compatible(np, "K2-UATA")) {
 		pmif->kind = controller_k2_ata6;
-	else if (of_device_is_compatible(np, "keylargo-ata")) {
-		if (strcmp(np->name, "ata-4") == 0)
+		d.udma_mask = ATA_UDMA5;
+	} else if (of_device_is_compatible(np, "keylargo-ata")) {
+		if (strcmp(np->name, "ata-4") == 0) {
 			pmif->kind = controller_kl_ata4;
-		else
+			d.udma_mask = ATA_UDMA4;
+		} else
 			pmif->kind = controller_kl_ata3;
-	} else if (of_device_is_compatible(np, "heathrow-ata"))
+	} else if (of_device_is_compatible(np, "heathrow-ata")) {
 		pmif->kind = controller_heathrow;
-	else {
+	} else {
 		pmif->kind = controller_ohare;
 		pmif->broken_dma = 1;
 	}
@@ -1101,19 +1117,10 @@ pmac_ide_setup_device(pmac_ide_hwif_t *p
 	/* Tell common code _not_ to mess with resources */
 	hwif->mmio = 1;
 	hwif->hwif_data = pmif;
-	hw->chipset = ide_pmac;
 	ide_init_port_hw(hwif, hw);
 	hwif->noprobe = pmif->mediabay;
 	hwif->hold = pmif->mediabay;
 	hwif->cbl = pmif->cable_80 ? ATA_CBL_PATA80 : ATA_CBL_PATA40;
-	hwif->drives[0].unmask = 1;
-	hwif->drives[1].unmask = 1;
-	hwif->drives[0].autotune = IDE_TUNE_AUTO;
-	hwif->drives[1].autotune = IDE_TUNE_AUTO;
-	hwif->host_flags = IDE_HFLAG_SET_PIO_MODE_KEEP_DMA |
-			   IDE_HFLAG_PIO_NO_DOWNGRADE |
-			   IDE_HFLAG_POST_SET_MODE;
-	hwif->pio_mask = ATA_PIO4;
 	hwif->set_pio_mode = pmac_ide_set_pio_mode;
 	if (pmif->kind == controller_un_ata6
 	    || pmif->kind == controller_k2_ata6
@@ -1133,14 +1140,16 @@ pmac_ide_setup_device(pmac_ide_hwif_t *p
 #endif /* CONFIG_PMAC_MEDIABAY */
 
 #ifdef CONFIG_BLK_DEV_IDEDMA_PMAC
+	if (pmif->cable_80 == 0)
+		d.udma_mask &= ATA_UDMA2;
 	/* has a DBDMA controller channel */
-	if (pmif->dma_regs)
-		pmac_ide_setup_dma(pmif, hwif);
-#endif /* CONFIG_BLK_DEV_IDEDMA_PMAC */
+	if (pmif->dma_regs == 0 || pmac_ide_setup_dma(pmif, hwif) < 0)
+#endif
+		d.udma_mask = d.mwdma_mask = 0;
 
 	idx[0] = hwif->index;
 
-	ide_device_add(idx);
+	ide_device_add(idx, &d);
 
 	return 0;
 }
@@ -1721,8 +1730,7 @@ pmac_ide_dma_lost_irq (ide_drive_t *driv
  * Allocate the data structures needed for using DMA with an interface
  * and fill the proper list of functions pointers
  */
-static void __init 
-pmac_ide_setup_dma(pmac_ide_hwif_t *pmif, ide_hwif_t *hwif)
+static int __init pmac_ide_setup_dma(pmac_ide_hwif_t *pmif, ide_hwif_t *hwif)
 {
 	struct pci_dev *dev = to_pci_dev(hwif->dev);
 
@@ -1730,7 +1738,7 @@ pmac_ide_setup_dma(pmac_ide_hwif_t *pmif
 	 * DMA routines ...
 	 */
 	if (dev == NULL)
-		return;
+		return -ENODEV;
 	/*
 	 * Allocate space for the DBDMA commands.
 	 * The +2 is +1 for the stop command and +1 to allow for
@@ -1743,7 +1751,7 @@ pmac_ide_setup_dma(pmac_ide_hwif_t *pmif
 	if (pmif->dma_table_cpu == NULL) {
 		printk(KERN_ERR "%s: unable to allocate DMA command list\n",
 		       hwif->name);
-		return;
+		return -ENOMEM;
 	}
 
 	hwif->sg_max_nents = MAX_DCMDS;
@@ -1757,29 +1765,7 @@ pmac_ide_setup_dma(pmac_ide_hwif_t *pmif
 	hwif->dma_timeout = &ide_dma_timeout;
 	hwif->dma_lost_irq = &pmac_ide_dma_lost_irq;
 
-	switch(pmif->kind) {
-		case controller_sh_ata6:
-			hwif->ultra_mask = pmif->cable_80 ? 0x7f : 0x07;
-			hwif->mwdma_mask = 0x07;
-			hwif->swdma_mask = 0x00;
-			break;
-		case controller_un_ata6:
-		case controller_k2_ata6:
-			hwif->ultra_mask = pmif->cable_80 ? 0x3f : 0x07;
-			hwif->mwdma_mask = 0x07;
-			hwif->swdma_mask = 0x00;
-			break;
-		case controller_kl_ata4:
-			hwif->ultra_mask = pmif->cable_80 ? 0x1f : 0x07;
-			hwif->mwdma_mask = 0x07;
-			hwif->swdma_mask = 0x00;
-			break;
-		default:
-			hwif->ultra_mask = 0x00;
-			hwif->mwdma_mask = 0x07;
-			hwif->swdma_mask = 0x00;
-			break;
-	}
+	return 0;
 }
 
 #endif /* CONFIG_BLK_DEV_IDEDMA_PMAC */
Index: b/drivers/ide/setup-pci.c
===================================================================
--- a/drivers/ide/setup-pci.c
+++ b/drivers/ide/setup-pci.c
@@ -399,20 +399,20 @@ static ide_hwif_t *ide_hwif_configure(st
 	return hwif;
 }
 
+#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
 /**
  *	ide_hwif_setup_dma	-	configure DMA interface
- *	@dev: PCI device
- *	@d: IDE port info
  *	@hwif: IDE interface
+ *	@d: IDE port info
  *
  *	Set up the DMA base for the interface. Enable the master bits as
  *	necessary and attempt to bring the device DMA into a ready to use
  *	state
  */
 
-static void ide_hwif_setup_dma(struct pci_dev *dev, const struct ide_port_info *d, ide_hwif_t *hwif)
+void ide_hwif_setup_dma(ide_hwif_t *hwif, const struct ide_port_info *d)
 {
-#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
+	struct pci_dev *dev = to_pci_dev(hwif->dev);
 	u16 pcicmd;
 
 	pci_read_config_word(dev, PCI_COMMAND, &pcicmd);
@@ -444,8 +444,8 @@ static void ide_hwif_setup_dma(struct pc
 				"(BIOS)\n", hwif->name, d->name);
 		}
 	}
-#endif /* CONFIG_BLK_DEV_IDEDMA_PCI*/
 }
+#endif /* CONFIG_BLK_DEV_IDEDMA_PCI */
 
 /**
  *	ide_setup_pci_controller	-	set up IDE PCI
@@ -507,7 +507,7 @@ out:
 void ide_pci_setup_ports(struct pci_dev *dev, const struct ide_port_info *d, int pciirq, u8 *idx)
 {
 	int channels = (d->host_flags & IDE_HFLAG_SINGLE) ? 1 : 2, port;
-	ide_hwif_t *hwif, *mate = NULL;
+	ide_hwif_t *hwif;
 	u8 tmp;
 
 	/*
@@ -529,71 +529,6 @@ void ide_pci_setup_ports(struct pci_dev 
 
 		*(idx + port) = hwif->index;
 	}
-
-	for (port = 0; port < channels; ++port) {
-		if (*(idx + port) == 0xff)
-			continue;
-
-		hwif = &ide_hwifs[*(idx + port)];
-
-		if (mate) {
-			hwif->mate = mate;
-			mate->mate = hwif;
-		}
-
-		hwif->channel = port;
-
-		if (d->init_iops)
-			d->init_iops(hwif);
-
-		if ((d->host_flags & IDE_HFLAG_NO_DMA) == 0)
-			ide_hwif_setup_dma(dev, d, hwif);
-
-		if ((!hwif->irq && (d->host_flags & IDE_HFLAG_LEGACY_IRQS)) ||
-		    (d->host_flags & IDE_HFLAG_FORCE_LEGACY_IRQS))
-			hwif->irq = port ? 15 : 14;
-
-		hwif->host_flags = d->host_flags;
-		hwif->pio_mask = d->pio_mask;
-
-		if ((d->host_flags & IDE_HFLAG_SERIALIZE) && hwif->mate)
-			hwif->mate->serialized = hwif->serialized = 1;
-
-		if (d->host_flags & IDE_HFLAG_IO_32BIT) {
-			hwif->drives[0].io_32bit = 1;
-			hwif->drives[1].io_32bit = 1;
-		}
-
-		if (d->host_flags & IDE_HFLAG_UNMASK_IRQS) {
-			hwif->drives[0].unmask = 1;
-			hwif->drives[1].unmask = 1;
-		}
-
-		hwif->swdma_mask = d->swdma_mask;
-		hwif->mwdma_mask = d->mwdma_mask;
-		hwif->ultra_mask = d->udma_mask;
-
-		if ((d->host_flags && IDE_HFLAG_NO_DMA) == 0 &&
-		    hwif->dma_base == 0) {
-			hwif->swdma_mask = 0;
-			hwif->mwdma_mask = 0;
-			hwif->ultra_mask = 0;
-		}
-
-		hwif->drives[0].autotune = 1;
-		hwif->drives[1].autotune = 1;
-
-		if (d->host_flags & IDE_HFLAG_RQSIZE_256)
-			hwif->rqsize = 256;
-
-		if (d->init_hwif)
-			/* Call chipset-specific routine
-			 * for each enabled hwif
-			 */
-			d->init_hwif(hwif);
-
-		mate = hwif;
-	}
 }
 
 EXPORT_SYMBOL_GPL(ide_pci_setup_ports);
@@ -674,7 +609,7 @@ int ide_setup_pci_device(struct pci_dev 
 	ret = do_ide_setup_pci_device(dev, d, &idx[0], 1);
 
 	if (ret >= 0)
-		ide_device_add(idx);
+		ide_device_add(idx, d);
 
 	return ret;
 }
@@ -698,7 +633,7 @@ int ide_setup_pci_devices(struct pci_dev
 			goto out;
 	}
 
-	ide_device_add(idx);
+	ide_device_add(idx, d);
 out:
 	return ret;
 }
Index: b/include/linux/ide.h
===================================================================
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1019,6 +1019,13 @@ extern int __ide_pci_register_driver(str
 void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *, int, u8 *);
 void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
 
+#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
+void ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
+#else
+static inline void ide_hwif_setup_dma(ide_hwif_t *hwif,
+				      const struct ide_port_info *d) { }
+#endif
+
 extern void default_hwif_iops(ide_hwif_t *);
 extern void default_hwif_mmiops(ide_hwif_t *);
 extern void default_hwif_transport(ide_hwif_t *);
@@ -1092,6 +1099,8 @@ enum {
 	IDE_HFLAG_CLEAR_SIMPLEX		= (1 << 28),
 	/* DSC overlap is unsupported */
 	IDE_HFLAG_NO_DSC		= (1 << 29),
+	/* don't autotune PIO */
+	IDE_HFLAG_NO_AUTOTUNE		= (1 << 30),
 };
 
 #ifdef CONFIG_BLK_DEV_OFFBOARD
@@ -1204,8 +1213,8 @@ void ide_unregister_region(struct gendis
 
 void ide_undecoded_slave(ide_drive_t *);
 
-int ide_device_add_all(u8 *idx);
-int ide_device_add(u8 idx[4]);
+int ide_device_add_all(u8 *idx, const struct ide_port_info *);
+int ide_device_add(u8 idx[4], const struct ide_port_info *);
 
 static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
 {

Re: [PATCH 7/8] ide: add struct ide_port_info instances to legacy host drivers

[Sergei Shtylyov]

Hello.

Bartlomiej Zolnierkiewicz wrote:

> * Remove 'struct pci_dev *dev' argument from ide_hwif_setup_dma().

> * Un-static ide_hwif_setup_dma() and add CONFIG_BLK_DEV_IDEDMA_PCI=n version.

> * Add 'const struct ide_port_info *d' argument to ide_device_add[_all]().

> * Factor out generic ports init from ide_pci_setup_ports() to ide_init_port(),
>   move it to ide-probe.c and call it in in ide_device_add_all() instead of
>   ide_pci_setup_ports().

> * Move ->mate setup to ide_device_add_all() from ide_port_init().

> * Add IDE_HFLAG_NO_AUTOTUNE host flag for host drivers that don't enable
>   ->autotune currently.

> * Setup hwif->chipset in ide_init_port() but iff pi->chipset is set
>   (to not override setup done by ide_hwif_configure()).

> * Add ETRAX host handling to ide_device_add_all().

> * cmd640.c: set IDE_HFLAG_ABUSE_* also for CONFIG_BLK_DEV_CMD640_ENHANCED=n.

> * pmac.c: make pmac_ide_setup_dma() return an error value and move DMA masks
>   setup to pmac_ide_setup_device().

> * Add 'struct ide_port_info' instances to legacy host drivers, pass them to
>   ide_device_add() calls and then remove open-coded ports initialization.

> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

> Index: b/drivers/ide/arm/icside.c
> ===================================================================
> --- a/drivers/ide/arm/icside.c
> +++ b/drivers/ide/arm/icside.c
> @@ -459,11 +456,19 @@ icside_register_v5(struct icside_state *
>  
>  	idx[0] = hwif->index;
>  
> -	ide_device_add(idx);
> +	ide_device_add(idx, NULL);
>  
>  	return 0;
>  }
>  
> +static const struct ide_port_info icside_v6_port_info __initdata = {
> +	.host_flags		= IDE_HFLAG_SERIALIZE |
> +				  IDE_HFLAG_NO_DMA | /* no SFF-style DMA */
> +				  IDE_HFLAG_NO_AUTOTUNE,
> +	.mwdma_mask		= ATA_MWDMA2,
> +	.swdma_mask		= ATA_SWDMA2,
> +};
> +

    Interesting... this driver's support for SWDMA0 is broken since the cycle 
should be 960 ns long, not 480, and SWDMA2 is underclocked using the same 
cycle as SWDMA1, 480 ns...

> Index: b/drivers/ide/cris/ide-cris.c
> ===================================================================
> --- a/drivers/ide/cris/ide-cris.c
> +++ b/drivers/ide/cris/ide-cris.c
> @@ -753,6 +753,15 @@ static void cris_set_dma_mode(ide_drive_
>  		cris_ide_set_speed(TYPE_DMA, 0, strobe, hold);
>  }
>  
> +static const struct ide_port_info cris_port_info __initdata = {
> +	.chipset		= ide_etrax100,
> +	.host_flags		= IDE_HFLAG_NO_ATAPI_DMA |
> +				  IDE_HFLAG_NO_DMA, /* no SFF-style DMA */
> +	.pio_mask		= ATA_PIO4,
> +	.udma_mask		= cris_ultra_mask,

    Hm, I wonder which value it will assume, 0x07 or 0?  Not sure even after 
looking at the source... :-)

> +	.mwdma_mask		= ATA_MWDMA2,
> +};
> +
>  static int __init init_e100_ide(void)
>  {
>  	hw_regs_t hw;
> Index: b/drivers/ide/ide-probe.c
> ===================================================================
> --- a/drivers/ide/ide-probe.c
> +++ b/drivers/ide/ide-probe.c
> @@ -1289,12 +1289,86 @@ static void hwif_register_devices(ide_hw
>  	}
>  }
>  
> -int ide_device_add_all(u8 *idx)
> +static void ide_init_port(ide_hwif_t *hwif, unsigned int port,
> +			  const struct ide_port_info *d)
>  {
> -	ide_hwif_t *hwif;
> +	if (d->chipset != ide_etrax100)
> +		hwif->channel = port;

   Hm, what's so special about ide_etrax100?

> +int ide_device_add_all(u8 idx[MAX_HWIFS], const struct ide_port_info *d)

    Function prototype doesn't match with one from <linux/ide.h> which has the 
first argument as a pointer...

> +{
> +	ide_hwif_t *hwif, *mate = NULL;
>  	int i, rc = 0;
>  
>  	for (i = 0; i < MAX_HWIFS; i++) {
> +		if (d == NULL || idx[i] == 0xff) {

    Why check for (d == NULL) every time and not do it once and break from the 
loop or even do it before the loop?

> +			mate = NULL;
> +			continue;
> +		}
> +
> +		hwif = &ide_hwifs[idx[i]];
> +
> +		if (d->chipset != ide_etrax100 && (i & 1) && mate) {
> +			hwif->mate = mate;
> +			mate->mate = hwif;
> +		}
> +
> +		mate = (i & 1) ? NULL : hwif;
> +
> +		ide_init_port(hwif, i & 1, d);
> +	}
> +
> +	for (i = 0; i < MAX_HWIFS; i++) {
>  		if (idx[i] == 0xff)
>  			continue;

MBR, Sergei

Re: [PATCH 7/8] ide: add struct ide_port_info instances to legacy host drivers

[Bartlomiej Zolnierkiewicz]

Hi,

On Monday 28 January 2008, Sergei Shtylyov wrote:
> Hello.
> 
> Bartlomiej Zolnierkiewicz wrote:
> 
> > * Remove 'struct pci_dev *dev' argument from ide_hwif_setup_dma().
> 
> > * Un-static ide_hwif_setup_dma() and add CONFIG_BLK_DEV_IDEDMA_PCI=n version.
> 
> > * Add 'const struct ide_port_info *d' argument to ide_device_add[_all]().
> 
> > * Factor out generic ports init from ide_pci_setup_ports() to ide_init_port(),
> >   move it to ide-probe.c and call it in in ide_device_add_all() instead of
> >   ide_pci_setup_ports().
> 
> > * Move ->mate setup to ide_device_add_all() from ide_port_init().
> 
> > * Add IDE_HFLAG_NO_AUTOTUNE host flag for host drivers that don't enable
> >   ->autotune currently.
> 
> > * Setup hwif->chipset in ide_init_port() but iff pi->chipset is set
> >   (to not override setup done by ide_hwif_configure()).
> 
> > * Add ETRAX host handling to ide_device_add_all().
> 
> > * cmd640.c: set IDE_HFLAG_ABUSE_* also for CONFIG_BLK_DEV_CMD640_ENHANCED=n.
> 
> > * pmac.c: make pmac_ide_setup_dma() return an error value and move DMA masks
> >   setup to pmac_ide_setup_device().
> 
> > * Add 'struct ide_port_info' instances to legacy host drivers, pass them to
> >   ide_device_add() calls and then remove open-coded ports initialization.
> 
> > Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
> 
> > Index: b/drivers/ide/arm/icside.c
> > ===================================================================
> > --- a/drivers/ide/arm/icside.c
> > +++ b/drivers/ide/arm/icside.c
> > @@ -459,11 +456,19 @@ icside_register_v5(struct icside_state *
> >  
> >  	idx[0] = hwif->index;
> >  
> > -	ide_device_add(idx);
> > +	ide_device_add(idx, NULL);
> >  
> >  	return 0;
> >  }
> >  
> > +static const struct ide_port_info icside_v6_port_info __initdata = {
> > +	.host_flags		= IDE_HFLAG_SERIALIZE |
> > +				  IDE_HFLAG_NO_DMA | /* no SFF-style DMA */
> > +				  IDE_HFLAG_NO_AUTOTUNE,
> > +	.mwdma_mask		= ATA_MWDMA2,
> > +	.swdma_mask		= ATA_SWDMA2,
> > +};
> > +
> 
>     Interesting... this driver's support for SWDMA0 is broken since the cycle 
> should be 960 ns long, not 480, and SWDMA2 is underclocked using the same 
> cycle as SWDMA1, 480 ns...

Added Russell to Cc:.

> > Index: b/drivers/ide/cris/ide-cris.c
> > ===================================================================
> > --- a/drivers/ide/cris/ide-cris.c
> > +++ b/drivers/ide/cris/ide-cris.c
> > @@ -753,6 +753,15 @@ static void cris_set_dma_mode(ide_drive_
> >  		cris_ide_set_speed(TYPE_DMA, 0, strobe, hold);
> >  }
> >  
> > +static const struct ide_port_info cris_port_info __initdata = {
> > +	.chipset		= ide_etrax100,
> > +	.host_flags		= IDE_HFLAG_NO_ATAPI_DMA |
> > +				  IDE_HFLAG_NO_DMA, /* no SFF-style DMA */
> > +	.pio_mask		= ATA_PIO4,
> > +	.udma_mask		= cris_ultra_mask,
> 
>     Hm, I wonder which value it will assume, 0x07 or 0?  Not sure even after 
> looking at the source... :-)

This is tricky since it depends on the CRIS version
(0x07 on CRIS V32 and 0x00 on CRIS V10).

> > +	.mwdma_mask		= ATA_MWDMA2,
> > +};
> > +
> >  static int __init init_e100_ide(void)
> >  {
> >  	hw_regs_t hw;
> > Index: b/drivers/ide/ide-probe.c
> > ===================================================================
> > --- a/drivers/ide/ide-probe.c
> > +++ b/drivers/ide/ide-probe.c
> > @@ -1289,12 +1289,86 @@ static void hwif_register_devices(ide_hw
> >  	}
> >  }
> >  
> > -int ide_device_add_all(u8 *idx)
> > +static void ide_init_port(ide_hwif_t *hwif, unsigned int port,
> > +			  const struct ide_port_info *d)
> >  {
> > -	ide_hwif_t *hwif;
> > +	if (d->chipset != ide_etrax100)
> > +		hwif->channel = port;
> 
>    Hm, what's so special about ide_etrax100?

The driver supports *4* channels and it didn't set ->channel at all.

Since in the meantime ide-cris got marked as BROKEN I guess that a patch
removing above code would be OK.

> > +int ide_device_add_all(u8 idx[MAX_HWIFS], const struct ide_port_info *d)
> 
>     Function prototype doesn't match with one from <linux/ide.h> which has the 
> first argument as a pointer...

I fixed it locally, thanks.

> > +{
> > +	ide_hwif_t *hwif, *mate = NULL;
> >  	int i, rc = 0;
> >  
> >  	for (i = 0; i < MAX_HWIFS; i++) {
> > +		if (d == NULL || idx[i] == 0xff) {
> 
>     Why check for (d == NULL) every time and not do it once and break from the 
> loop or even do it before the loop?

To save on some code lines and resulting code size
(ide_device_add_all is not performance critical).

Bart

Re: [PATCH 7/8] ide: add struct ide_port_info instances to legacy host drivers

[Russell King]

On Sat, Feb 02, 2008 at 12:35:30AM +0100, Bartlomiej Zolnierkiewicz wrote:
> > > Index: b/drivers/ide/arm/icside.c
> > > ===================================================================
> > > --- a/drivers/ide/arm/icside.c
> > > +++ b/drivers/ide/arm/icside.c
> > > @@ -459,11 +456,19 @@ icside_register_v5(struct icside_state *
> > >  
> > >  	idx[0] = hwif->index;
> > >  
> > > -	ide_device_add(idx);
> > > +	ide_device_add(idx, NULL);
> > >  
> > >  	return 0;
> > >  }
> > >  
> > > +static const struct ide_port_info icside_v6_port_info __initdata = {
> > > +	.host_flags		= IDE_HFLAG_SERIALIZE |
> > > +				  IDE_HFLAG_NO_DMA | /* no SFF-style DMA */
> > > +				  IDE_HFLAG_NO_AUTOTUNE,
> > > +	.mwdma_mask		= ATA_MWDMA2,
> > > +	.swdma_mask		= ATA_SWDMA2,
> > > +};
> > > +
> > 
> >     Interesting... this driver's support for SWDMA0 is broken since the cycle 
> > should be 960 ns long, not 480, and SWDMA2 is underclocked using the same 
> > cycle as SWDMA1, 480 ns...
> 
> Added Russell to Cc:.

Underclocking the DMA is not a problem - if you look at the timing
diagrams and associated tables in the ATA specifications, you'll
find that they specify the *minimum* cycle timings.

However, you're correct that SWDMA0 is not able to be supported.

-- 
Russell King
 Linux kernel    2.6 ARM Linux   - http://www.arm.linux.org.uk/
 maintainer of:

Re: [PATCH 7/8] ide: add struct ide_port_info instances to legacy host drivers

[Atsushi Nemoto]

On Sun, 06 Jan 2008 18:03:10 +0100, Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> wrote:
> +	/* reset DMA masks only for SFF-style DMA controllers */
> +	if ((d->host_flags && IDE_HFLAG_NO_DMA) == 0 && hwif->dma_base == 0)
> +		hwif->swdma_mask = hwif->mwdma_mask = hwif->ultra_mask = 0;

It might be too late, but "host_flags && IDE_HFLAGS_NO_DMA" seems
wrong for me.

---
Atsushi Nemoto

Re: [PATCH 7/8] ide: add struct ide_port_info instances to legacy host drivers

[Bartlomiej Zolnierkiewicz]

On Sunday 10 February 2008, Atsushi Nemoto wrote:
> On Sun, 06 Jan 2008 18:03:10 +0100, Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> wrote:
> > +	/* reset DMA masks only for SFF-style DMA controllers */
> > +	if ((d->host_flags && IDE_HFLAG_NO_DMA) == 0 && hwif->dma_base == 0)
> > +		hwif->swdma_mask = hwif->mwdma_mask = hwif->ultra_mask = 0;
> 
> It might be too late, but "host_flags && IDE_HFLAGS_NO_DMA" seems
> wrong for me.

It is too late for -git but not too late for 2.6.25-rc1. ;-)

Could you make a patch please?

Thanks,
Bart

Re: [PATCH 7/8] ide: add struct ide_port_info instances to legacy host drivers

[Bartlomiej Zolnierkiewicz]

On Sunday 10 February 2008, Bartlomiej Zolnierkiewicz wrote:
> On Sunday 10 February 2008, Atsushi Nemoto wrote:
> > On Sun, 06 Jan 2008 18:03:10 +0100, Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> wrote:
> > > +	/* reset DMA masks only for SFF-style DMA controllers */
> > > +	if ((d->host_flags && IDE_HFLAG_NO_DMA) == 0 && hwif->dma_base == 0)
> > > +		hwif->swdma_mask = hwif->mwdma_mask = hwif->ultra_mask = 0;
> > 
> > It might be too late, but "host_flags && IDE_HFLAGS_NO_DMA" seems
> > wrong for me.
> 
> It is too late for -git but not too late for 2.6.25-rc1. ;-)
> 
> Could you make a patch please?

I went ahead and made a patch (sorry, I needed it for git pull request :).

From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Subject: [PATCH] ide: ide_init_port() bugfix

On Sunday 10 February 2008, Atsushi Nemoto wrote:
> On Sun, 06 Jan 2008 18:03:10 +0100, Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> wrote:
> > +	/* reset DMA masks only for SFF-style DMA controllers */
> > +	if ((d->host_flags && IDE_HFLAG_NO_DMA) == 0 && hwif->dma_base == 0)
> > +		hwif->swdma_mask = hwif->mwdma_mask = hwif->ultra_mask = 0;
> 
> It might be too late, but "host_flags && IDE_HFLAGS_NO_DMA" seems
> wrong for me.

Fix regression caused by commmit c413b9b94d9a8e7548cc4b2e04b7df0439ce76fd
("ide: add struct ide_port_info instances to legacy host drivers").

Reported-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/ide-probe.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: b/drivers/ide/ide-probe.c
===================================================================
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -1355,7 +1355,7 @@ static void ide_init_port(ide_hwif_t *hw
 	hwif->ultra_mask = d->udma_mask;
 
 	/* reset DMA masks only for SFF-style DMA controllers */
-	if ((d->host_flags && IDE_HFLAG_NO_DMA) == 0 && hwif->dma_base == 0)
+	if ((d->host_flags & IDE_HFLAG_NO_DMA) == 0 && hwif->dma_base == 0)
 		hwif->swdma_mask = hwif->mwdma_mask = hwif->ultra_mask = 0;
 
 	if (d->host_flags & IDE_HFLAG_RQSIZE_256)

Re: [PATCH 7/8] ide: add struct ide_port_info instances to legacy host drivers

[Atsushi Nemoto]

On Mon, 11 Feb 2008 00:16:07 +0100, Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> wrote:
> > It is too late for -git but not too late for 2.6.25-rc1. ;-)
> > 
> > Could you make a patch please?
> 
> I went ahead and made a patch (sorry, I needed it for git pull request :).
> 
> From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
> Subject: [PATCH] ide: ide_init_port() bugfix

Thanks!  Looks sane for me :)

---
Atsushi Nemoto

[PATCH 8/8] ide: add ->cable_detect method to ide_hwif_t

[Bartlomiej Zolnierkiewicz]

* Add ->cable_detect method to ide_hwif_t.

* Call the new method in ide_init_port() if:
  - the host supports UDMA modes > UDMA2 ('hwif->ultra_mask & 78')
  - DMA initialization was successful (if hwif->dma_base is not set
    ide_init_port() sets hwif->ultra_mask to zero)
  - "idex=ata66" is not used ('hwif->cbl != ATA_CBL_PATA40_SHORT')

* Convert PCI host drivers to use ->cable_detect method.

While at it:

* Factor out cable detection to separate functions (if not already done).

* hpt366.c/it8213.c/slc90e66.c:
  - don't check cable type if "idex=ata66" is used

* pdc202xx_new.c:
  - add __devinit tag to pdcnew_cable_detect()

* pdc202xx_old.c:
  - rename pdc202xx_old_cable_detect() to pdc2026x_old_cable_detect()
  - add __devinit tag to pdc2026x_old_cable_detect()

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
-105 bytes
 drivers/ide/ide-probe.c        |    5 ++
 drivers/ide/pci/aec62xx.c      |   25 +++++-------
 drivers/ide/pci/alim15x3.c     |    5 --
 drivers/ide/pci/amd74xx.c      |   18 ++++----
 drivers/ide/pci/atiixp.c       |    6 --
 drivers/ide/pci/cmd64x.c       |    5 --
 drivers/ide/pci/cs5535.c       |    6 --
 drivers/ide/pci/hpt366.c       |   84 ++++++++++++++++++++++-------------------
 drivers/ide/pci/it8213.c       |   21 +++++-----
 drivers/ide/pci/it821x.c       |    5 --
 drivers/ide/pci/jmicron.c      |    6 --
 drivers/ide/pci/pdc202xx_new.c |    8 ---
 drivers/ide/pci/pdc202xx_old.c |   10 ++--
 drivers/ide/pci/piix.c         |    7 ---
 drivers/ide/pci/scc_pata.c     |    3 -
 drivers/ide/pci/serverworks.c  |    9 ----
 drivers/ide/pci/siimage.c      |    5 --
 drivers/ide/pci/sis5513.c      |    5 --
 drivers/ide/pci/slc90e66.c     |   19 +++++----
 drivers/ide/pci/tc86c001.c     |   24 +++++++----
 drivers/ide/pci/via82cxxx.c    |    6 --
 include/linux/ide.h            |    2 
 22 files changed, 137 insertions(+), 147 deletions(-)

Index: b/drivers/ide/ide-probe.c
===================================================================
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -1343,6 +1343,11 @@ static void ide_init_port(ide_hwif_t *hw
 	/* call chipset specific routine for each enabled port */
 	if (d->init_hwif)
 		d->init_hwif(hwif);
+
+	if (hwif->cable_detect && (hwif->ultra_mask & 0x78)) {
+		if (hwif->cbl != ATA_CBL_PATA40_SHORT)
+			hwif->cbl = hwif->cable_detect(hwif);
+	}
 }
 
 int ide_device_add_all(u8 idx[MAX_HWIFS], const struct ide_port_info *d)
Index: b/drivers/ide/pci/aec62xx.c
===================================================================
--- a/drivers/ide/pci/aec62xx.c
+++ b/drivers/ide/pci/aec62xx.c
@@ -166,6 +166,16 @@ static unsigned int __devinit init_chips
 	return dev->irq;
 }
 
+static u8 __devinit atp86x_cable_detect(ide_hwif_t *hwif)
+{
+	struct pci_dev *dev = to_pci_dev(hwif->dev);
+	u8 ata66 = 0, mask = hwif->channel ? 0x02 : 0x01;
+
+	pci_read_config_byte(dev, 0x49, &ata66);
+
+	return (ata66 & mask) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
+}
+
 static void __devinit init_hwif_aec62xx(ide_hwif_t *hwif)
 {
 	struct pci_dev *dev = to_pci_dev(hwif->dev);
@@ -174,21 +184,10 @@ static void __devinit init_hwif_aec62xx(
 
 	if (dev->device == PCI_DEVICE_ID_ARTOP_ATP850UF)
 		hwif->set_dma_mode = &aec6210_set_mode;
-	else
+	else {
 		hwif->set_dma_mode = &aec6260_set_mode;
 
-	if (hwif->dma_base == 0)
-		return;
-
-	if (dev->device == PCI_DEVICE_ID_ARTOP_ATP850UF)
-		return;
-
-	if (hwif->cbl != ATA_CBL_PATA40_SHORT) {
-		u8 ata66 = 0, mask = hwif->channel ? 0x02 : 0x01;
-
-		pci_read_config_byte(dev, 0x49, &ata66);
-
-		hwif->cbl = (ata66 & mask) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
+		hwif->cable_detect = atp86x_cable_detect;
 	}
 }
 
Index: b/drivers/ide/pci/alim15x3.c
===================================================================
--- a/drivers/ide/pci/alim15x3.c
+++ b/drivers/ide/pci/alim15x3.c
@@ -666,13 +666,12 @@ static void __devinit init_hwif_common_a
 	hwif->set_dma_mode = &ali_set_dma_mode;
 	hwif->udma_filter = &ali_udma_filter;
 
+	hwif->cable_detect = ata66_ali15x3;
+
 	if (hwif->dma_base == 0)
 		return;
 
 	hwif->dma_setup = &ali15x3_dma_setup;
-
-	if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-		hwif->cbl = ata66_ali15x3(hwif);
 }
 
 /**
Index: b/drivers/ide/pci/amd74xx.c
===================================================================
--- a/drivers/ide/pci/amd74xx.c
+++ b/drivers/ide/pci/amd74xx.c
@@ -199,6 +199,14 @@ static unsigned int __devinit init_chips
 	return dev->irq;
 }
 
+static u8 __devinit amd_cable_detect(ide_hwif_t *hwif)
+{
+	if ((amd_80w >> hwif->channel) & 1)
+		return ATA_CBL_PATA80;
+	else
+		return ATA_CBL_PATA40;
+}
+
 static void __devinit init_hwif_amd74xx(ide_hwif_t *hwif)
 {
 	struct pci_dev *dev = to_pci_dev(hwif->dev);
@@ -209,15 +217,7 @@ static void __devinit init_hwif_amd74xx(
 	hwif->set_pio_mode = &amd_set_pio_mode;
 	hwif->set_dma_mode = &amd_set_drive;
 
-	if (!hwif->dma_base)
-		return;
-
-	if (hwif->cbl != ATA_CBL_PATA40_SHORT) {
-		if ((amd_80w >> hwif->channel) & 1)
-			hwif->cbl = ATA_CBL_PATA80;
-		else
-			hwif->cbl = ATA_CBL_PATA40;
-	}
+	hwif->cable_detect = amd_cable_detect;
 }
 
 #define IDE_HFLAGS_AMD \
Index: b/drivers/ide/pci/atiixp.c
===================================================================
--- a/drivers/ide/pci/atiixp.c
+++ b/drivers/ide/pci/atiixp.c
@@ -147,11 +147,7 @@ static void __devinit init_hwif_atiixp(i
 	hwif->set_pio_mode = &atiixp_set_pio_mode;
 	hwif->set_dma_mode = &atiixp_set_dma_mode;
 
-	if (!hwif->dma_base)
-		return;
-
-	if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-		hwif->cbl = atiixp_cable_detect(hwif);
+	hwif->cable_detect = atiixp_cable_detect;
 }
 
 static const struct ide_port_info atiixp_pci_info[] __devinitdata = {
Index: b/drivers/ide/pci/cmd64x.c
===================================================================
--- a/drivers/ide/pci/cmd64x.c
+++ b/drivers/ide/pci/cmd64x.c
@@ -393,6 +393,8 @@ static void __devinit init_hwif_cmd64x(i
 	hwif->set_pio_mode = &cmd64x_set_pio_mode;
 	hwif->set_dma_mode = &cmd64x_set_dma_mode;
 
+	hwif->cable_detect = ata66_cmd64x;
+
 	if (!hwif->dma_base)
 		return;
 
@@ -411,9 +413,6 @@ static void __devinit init_hwif_cmd64x(i
 	if (dev->device == PCI_DEVICE_ID_CMD_646 && dev->revision < 5)
 		hwif->ultra_mask = 0x00;
 
-	if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-		hwif->cbl = ata66_cmd64x(hwif);
-
 	switch (dev->device) {
 	case PCI_DEVICE_ID_CMD_648:
 	case PCI_DEVICE_ID_CMD_649:
Index: b/drivers/ide/pci/cs5535.c
===================================================================
--- a/drivers/ide/pci/cs5535.c
+++ b/drivers/ide/pci/cs5535.c
@@ -179,11 +179,7 @@ static void __devinit init_hwif_cs5535(i
 	hwif->set_pio_mode = &cs5535_set_pio_mode;
 	hwif->set_dma_mode = &cs5535_set_dma_mode;
 
-	if (hwif->dma_base == 0)
-		return;
-
-	if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-		hwif->cbl = cs5535_cable_detect(hwif);
+	hwif->cable_detect = cs5535_cable_detect;
 }
 
 static const struct ide_port_info cs5535_chipset __devinitdata = {
Index: b/drivers/ide/pci/hpt366.c
===================================================================
--- a/drivers/ide/pci/hpt366.c
+++ b/drivers/ide/pci/hpt366.c
@@ -1279,12 +1279,55 @@ static unsigned int __devinit init_chips
 	return dev->irq;
 }
 
+static u8 __devinit hpt3xx_cable_detect(ide_hwif_t *hwif)
+{
+	struct pci_dev	*dev	= to_pci_dev(hwif->dev);
+	struct hpt_info *info	= pci_get_drvdata(dev);
+	u8 chip_type		= info->chip_type;
+	u8 scr1 = 0, ata66	= hwif->channel ? 0x01 : 0x02;
+
+	/*
+	 * The HPT37x uses the CBLID pins as outputs for MA15/MA16
+	 * address lines to access an external EEPROM.  To read valid
+	 * cable detect state the pins must be enabled as inputs.
+	 */
+	if (chip_type == HPT374 && (PCI_FUNC(dev->devfn) & 1)) {
+		/*
+		 * HPT374 PCI function 1
+		 * - set bit 15 of reg 0x52 to enable TCBLID as input
+		 * - set bit 15 of reg 0x56 to enable FCBLID as input
+		 */
+		u8  mcr_addr = hwif->select_data + 2;
+		u16 mcr;
+
+		pci_read_config_word(dev, mcr_addr, &mcr);
+		pci_write_config_word(dev, mcr_addr, (mcr | 0x8000));
+		/* now read cable id register */
+		pci_read_config_byte(dev, 0x5a, &scr1);
+		pci_write_config_word(dev, mcr_addr, mcr);
+	} else if (chip_type >= HPT370) {
+		/*
+		 * HPT370/372 and 374 pcifn 0
+		 * - clear bit 0 of reg 0x5b to enable P/SCBLID as inputs
+		 */
+		u8 scr2 = 0;
+
+		pci_read_config_byte(dev, 0x5b, &scr2);
+		pci_write_config_byte(dev, 0x5b, (scr2 & ~1));
+		/* now read cable id register */
+		pci_read_config_byte(dev, 0x5a, &scr1);
+		pci_write_config_byte(dev, 0x5b,  scr2);
+	} else
+		pci_read_config_byte(dev, 0x5a, &scr1);
+
+	return (scr1 & ata66) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
+}
+
 static void __devinit init_hwif_hpt366(ide_hwif_t *hwif)
 {
 	struct pci_dev *dev	= to_pci_dev(hwif->dev);
 	struct hpt_info *info	= pci_get_drvdata(dev);
 	int serialize		= HPT_SERIALIZE_IO;
-	u8  scr1 = 0, ata66	= hwif->channel ? 0x01 : 0x02;
 	u8  chip_type		= info->chip_type;
 	u8  new_mcr, old_mcr	= 0;
 
@@ -1301,6 +1344,8 @@ static void __devinit init_hwif_hpt366(i
 	hwif->udma_filter	= &hpt3xx_udma_filter;
 	hwif->mdma_filter	= &hpt3xx_mdma_filter;
 
+	hwif->cable_detect	= hpt3xx_cable_detect;
+
 	/*
 	 * HPT3xxN chips have some complications:
 	 *
@@ -1346,43 +1391,6 @@ static void __devinit init_hwif_hpt366(i
 	if (hwif->dma_base == 0)
 		return;
 
-	/*
-	 * The HPT37x uses the CBLID pins as outputs for MA15/MA16
-	 * address lines to access an external EEPROM.  To read valid
-	 * cable detect state the pins must be enabled as inputs.
-	 */
-	if (chip_type == HPT374 && (PCI_FUNC(dev->devfn) & 1)) {
-		/*
-		 * HPT374 PCI function 1
-		 * - set bit 15 of reg 0x52 to enable TCBLID as input
-		 * - set bit 15 of reg 0x56 to enable FCBLID as input
-		 */
-		u8  mcr_addr = hwif->select_data + 2;
-		u16 mcr;
-
-		pci_read_config_word (dev, mcr_addr, &mcr);
-		pci_write_config_word(dev, mcr_addr, (mcr | 0x8000));
-		/* now read cable id register */
-		pci_read_config_byte (dev, 0x5a, &scr1);
-		pci_write_config_word(dev, mcr_addr, mcr);
-	} else if (chip_type >= HPT370) {
-		/*
-		 * HPT370/372 and 374 pcifn 0
-		 * - clear bit 0 of reg 0x5b to enable P/SCBLID as inputs
-		 */
-		u8 scr2 = 0;
-
-		pci_read_config_byte (dev, 0x5b, &scr2);
-		pci_write_config_byte(dev, 0x5b, (scr2 & ~1));
-		/* now read cable id register */
-		pci_read_config_byte (dev, 0x5a, &scr1);
-		pci_write_config_byte(dev, 0x5b,  scr2);
-	} else
-		pci_read_config_byte (dev, 0x5a, &scr1);
-
-	if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-		hwif->cbl = (scr1 & ata66) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
-
 	if (chip_type >= HPT374) {
 		hwif->ide_dma_test_irq	= &hpt374_ide_dma_test_irq;
 		hwif->ide_dma_end	= &hpt374_ide_dma_end;
Index: b/drivers/ide/pci/it8213.c
===================================================================
--- a/drivers/ide/pci/it8213.c
+++ b/drivers/ide/pci/it8213.c
@@ -143,6 +143,16 @@ static void it8213_set_dma_mode(ide_driv
 	}
 }
 
+static u8 __devinit it8213_cable_detect(ide_hwif_t *hwif)
+{
+	struct pci_dev *dev = to_pci_dev(hwif->dev);
+	u8 reg42h = 0;
+
+	pci_read_config_byte(dev, 0x42, &reg42h);
+
+	return (reg42h & 0x02) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
+}
+
 /**
  *	init_hwif_it8213	-	set up hwif structs
  *	@hwif: interface to set up
@@ -152,19 +162,10 @@ static void it8213_set_dma_mode(ide_driv
 
 static void __devinit init_hwif_it8213(ide_hwif_t *hwif)
 {
-	struct pci_dev *dev = to_pci_dev(hwif->dev);
-	u8 reg42h = 0;
-
 	hwif->set_dma_mode = &it8213_set_dma_mode;
 	hwif->set_pio_mode = &it8213_set_pio_mode;
 
-	if (!hwif->dma_base)
-		return;
-
-	pci_read_config_byte(dev, 0x42, &reg42h);
-
-	if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-		hwif->cbl = (reg42h & 0x02) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
+	hwif->cable_detect = it8213_cable_detect;
 }
 
 
Index: b/drivers/ide/pci/it821x.c
===================================================================
--- a/drivers/ide/pci/it821x.c
+++ b/drivers/ide/pci/it821x.c
@@ -579,14 +579,13 @@ static void __devinit init_hwif_it821x(i
 	} else
 		hwif->host_flags |= IDE_HFLAG_NO_SET_MODE;
 
+	hwif->cable_detect = ata66_it821x;
+
 	if (hwif->dma_base == 0)
 		return;
 
 	hwif->ultra_mask = ATA_UDMA6;
 	hwif->mwdma_mask = ATA_MWDMA2;
-
-	if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-		hwif->cbl = ata66_it821x(hwif);
 }
 
 static void __devinit it8212_disable_raid(struct pci_dev *dev)
Index: b/drivers/ide/pci/jmicron.c
===================================================================
--- a/drivers/ide/pci/jmicron.c
+++ b/drivers/ide/pci/jmicron.c
@@ -111,11 +111,7 @@ static void __devinit init_hwif_jmicron(
 	hwif->set_pio_mode = &jmicron_set_pio_mode;
 	hwif->set_dma_mode = &jmicron_set_dma_mode;
 
-	if (hwif->dma_base == 0)
-		return;
-
-	if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-		hwif->cbl = ata66_jmicron(hwif);
+	hwif->cable_detect = ata66_jmicron;
 }
 
 static const struct ide_port_info jmicron_chipset __devinitdata = {
Index: b/drivers/ide/pci/pdc202xx_new.c
===================================================================
--- a/drivers/ide/pci/pdc202xx_new.c
+++ b/drivers/ide/pci/pdc202xx_new.c
@@ -197,7 +197,7 @@ static void pdcnew_set_pio_mode(ide_driv
 	}
 }
 
-static u8 pdcnew_cable_detect(ide_hwif_t *hwif)
+static u8 __devinit pdcnew_cable_detect(ide_hwif_t *hwif)
 {
 	if (get_indexed_reg(hwif, 0x0b) & 0x04)
 		return ATA_CBL_PATA40;
@@ -456,11 +456,7 @@ static void __devinit init_hwif_pdc202ne
 	hwif->quirkproc = &pdcnew_quirkproc;
 	hwif->resetproc = &pdcnew_reset;
 
-	if (hwif->dma_base == 0)
-		return;
-
-	if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-		hwif->cbl = pdcnew_cable_detect(hwif);
+	hwif->cable_detect = pdcnew_cable_detect;
 }
 
 static struct pci_dev * __devinit pdc20270_get_dev2(struct pci_dev *dev)
Index: b/drivers/ide/pci/pdc202xx_old.c
===================================================================
--- a/drivers/ide/pci/pdc202xx_old.c
+++ b/drivers/ide/pci/pdc202xx_old.c
@@ -140,7 +140,7 @@ static void pdc202xx_set_pio_mode(ide_dr
 	pdc202xx_set_mode(drive, XFER_PIO_0 + pio);
 }
 
-static u8 pdc202xx_old_cable_detect (ide_hwif_t *hwif)
+static u8 __devinit pdc2026x_old_cable_detect(ide_hwif_t *hwif)
 {
 	struct pci_dev *dev = to_pci_dev(hwif->dev);
 	u16 CIS = 0, mask = (hwif->channel) ? (1<<11) : (1<<10);
@@ -311,9 +311,12 @@ static void __devinit init_hwif_pdc202xx
 
 	hwif->quirkproc = &pdc202xx_quirkproc;
 
-	if (dev->device != PCI_DEVICE_ID_PROMISE_20246)
+	if (dev->device != PCI_DEVICE_ID_PROMISE_20246) {
 		hwif->resetproc = &pdc202xx_reset;
 
+		hwif->cable_detect = pdc2026x_old_cable_detect;
+	}
+
 	if (hwif->dma_base == 0)
 		return;
 
@@ -321,9 +324,6 @@ static void __devinit init_hwif_pdc202xx
 	hwif->dma_timeout = &pdc202xx_dma_timeout;
 
 	if (dev->device != PCI_DEVICE_ID_PROMISE_20246) {
-		if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-			hwif->cbl = pdc202xx_old_cable_detect(hwif);
-
 		hwif->dma_start = &pdc202xx_old_ide_dma_start;
 		hwif->ide_dma_end = &pdc202xx_old_ide_dma_end;
 	} 
Index: b/drivers/ide/pci/piix.c
===================================================================
--- a/drivers/ide/pci/piix.c
+++ b/drivers/ide/pci/piix.c
@@ -290,14 +290,11 @@ static void __devinit init_hwif_piix(ide
 	hwif->set_pio_mode = &piix_set_pio_mode;
 	hwif->set_dma_mode = &piix_set_dma_mode;
 
+	hwif->cable_detect = piix_cable_detect;
+
 	if (!hwif->dma_base)
 		return;
 
-	if (hwif->ultra_mask & 0x78) {
-		if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-			hwif->cbl = piix_cable_detect(hwif);
-	}
-
 	if (no_piix_dma)
 		hwif->ultra_mask = hwif->mwdma_mask = hwif->swdma_mask = 0;
 }
Index: b/drivers/ide/pci/scc_pata.c
===================================================================
--- a/drivers/ide/pci/scc_pata.c
+++ b/drivers/ide/pci/scc_pata.c
@@ -683,8 +683,7 @@ static void __devinit init_hwif_scc(ide_
 	else
 		hwif->ultra_mask = ATA_UDMA5; /* 100MHz */
 
-	if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-		hwif->cbl = scc_cable_detect(hwif);
+	hwif->cable_detect = scc_cable_detect;
 }
 
 #define DECLARE_SCC_DEV(name_str)			\
Index: b/drivers/ide/pci/serverworks.c
===================================================================
--- a/drivers/ide/pci/serverworks.c
+++ b/drivers/ide/pci/serverworks.c
@@ -346,13 +346,8 @@ static void __devinit init_hwif_svwks (i
 	hwif->set_dma_mode = &svwks_set_dma_mode;
 	hwif->udma_filter = &svwks_udma_filter;
 
-	if (!hwif->dma_base)
-		return;
-
-	if (dev->device != PCI_DEVICE_ID_SERVERWORKS_OSB4IDE) {
-		if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-			hwif->cbl = ata66_svwks(hwif);
-	}
+	if (dev->device != PCI_DEVICE_ID_SERVERWORKS_OSB4IDE)
+		hwif->cable_detect = ata66_svwks;
 }
 
 #define IDE_HFLAGS_SVWKS \
Index: b/drivers/ide/pci/siimage.c
===================================================================
--- a/drivers/ide/pci/siimage.c
+++ b/drivers/ide/pci/siimage.c
@@ -827,15 +827,14 @@ static void __devinit init_hwif_siimage(
 	} else
 		hwif->udma_filter = &sil_pata_udma_filter;
 
+	hwif->cable_detect = ata66_siimage;
+
 	if (hwif->dma_base == 0)
 		return;
 
 	if (sata)
 		hwif->host_flags |= IDE_HFLAG_NO_ATAPI_DMA;
 
-	if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-		hwif->cbl = ata66_siimage(hwif);
-
 	if (hwif->mmio) {
 		hwif->ide_dma_test_irq = &siimage_mmio_ide_dma_test_irq;
 	} else {
Index: b/drivers/ide/pci/sis5513.c
===================================================================
--- a/drivers/ide/pci/sis5513.c
+++ b/drivers/ide/pci/sis5513.c
@@ -565,13 +565,12 @@ static void __devinit init_hwif_sis5513 
 	if (chipset_family >= ATA_133)
 		hwif->udma_filter = sis5513_ata133_udma_filter;
 
+	hwif->cable_detect = ata66_sis5513;
+
 	if (hwif->dma_base == 0)
 		return;
 
 	hwif->ultra_mask = udma_rates[chipset_family];
-
-	if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-		hwif->cbl = ata66_sis5513(hwif);
 }
 
 static const struct ide_port_info sis5513_chipset __devinitdata = {
Index: b/drivers/ide/pci/slc90e66.c
===================================================================
--- a/drivers/ide/pci/slc90e66.c
+++ b/drivers/ide/pci/slc90e66.c
@@ -118,23 +118,26 @@ static void slc90e66_set_dma_mode(ide_dr
 	}
 }
 
-static void __devinit init_hwif_slc90e66 (ide_hwif_t *hwif)
+static u8 __devinit slc90e66_cable_detect(ide_hwif_t *hwif)
 {
 	struct pci_dev *dev = to_pci_dev(hwif->dev);
-	u8 reg47 = 0;
-	u8 mask = hwif->channel ? 0x01 : 0x02;  /* bit0:Primary */
+	u8 reg47 = 0, mask = hwif->channel ? 0x01 : 0x02;
 
+	pci_read_config_byte(dev, 0x47, &reg47);
+
+	/* bit[0(1)]: 0:80, 1:40 */
+	return (reg47 & mask) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
+}
+
+static void __devinit init_hwif_slc90e66(ide_hwif_t *hwif)
+{
 	hwif->set_pio_mode = &slc90e66_set_pio_mode;
 	hwif->set_dma_mode = &slc90e66_set_dma_mode;
 
-	pci_read_config_byte(dev, 0x47, &reg47);
-
 	if (hwif->dma_base == 0)
 		return;
 
-	if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-		/* bit[0(1)]: 0:80, 1:40 */
-		hwif->cbl = (reg47 & mask) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
+	hwif->cable_detect = slc90e66_cable_detect;
 }
 
 static const struct ide_port_info slc90e66_chipset __devinitdata = {
Index: b/drivers/ide/pci/tc86c001.c
===================================================================
--- a/drivers/ide/pci/tc86c001.c
+++ b/drivers/ide/pci/tc86c001.c
@@ -160,6 +160,19 @@ static int tc86c001_busproc(ide_drive_t 
 	return 0;
 }
 
+static u8 __devinit tc86c001_cable_detect(ide_hwif_t *hwif)
+{
+	struct pci_dev *dev = to_pci_dev(hwif->dev);
+	unsigned long sc_base = pci_resource_start(dev, 5);
+	u16 scr1 = inw(sc_base + 0x00);
+
+	/*
+	 * System Control  1 Register bit 13 (PDIAGN):
+	 * 0=80-pin cable, 1=40-pin cable
+	 */
+	return (scr1 & 0x2000) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
+}
+
 static void __devinit init_hwif_tc86c001(ide_hwif_t *hwif)
 {
 	struct pci_dev *dev	= to_pci_dev(hwif->dev);
@@ -183,6 +196,8 @@ static void __devinit init_hwif_tc86c001
 
 	hwif->busproc	= &tc86c001_busproc;
 
+	hwif->cable_detect = tc86c001_cable_detect;
+
 	if (!hwif->dma_base)
 		return;
 
@@ -196,15 +211,6 @@ static void __devinit init_hwif_tc86c001
 	hwif->rqsize	 = 0xffff;
 
 	hwif->dma_start 	= &tc86c001_dma_start;
-
-	if (hwif->cbl != ATA_CBL_PATA40_SHORT) {
-		/*
-		 * System Control  1 Register bit 13 (PDIAGN):
-		 * 0=80-pin cable, 1=40-pin cable
-		 */
-		scr1 = inw(sc_base + 0x00);
-		hwif->cbl = (scr1 & 0x2000) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
-	}
 }
 
 static unsigned int __devinit init_chipset_tc86c001(struct pci_dev *dev,
Index: b/drivers/ide/pci/via82cxxx.c
===================================================================
--- a/drivers/ide/pci/via82cxxx.c
+++ b/drivers/ide/pci/via82cxxx.c
@@ -424,11 +424,7 @@ static void __devinit init_hwif_via82cxx
 	hwif->set_pio_mode = &via_set_pio_mode;
 	hwif->set_dma_mode = &via_set_drive;
 
-	if (!hwif->dma_base)
-		return;
-
-	if (hwif->cbl != ATA_CBL_PATA40_SHORT)
-		hwif->cbl = via82cxxx_cable_detect(hwif);
+	hwif->cable_detect = via82cxxx_cable_detect;
 }
 
 static const struct ide_port_info via82cxxx_chipset __devinitdata = {
Index: b/include/linux/ide.h
===================================================================
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -535,6 +535,8 @@ typedef struct hwif_s {
 	u8 (*mdma_filter)(ide_drive_t *);
 	u8 (*udma_filter)(ide_drive_t *);
 
+	u8 (*cable_detect)(struct hwif_s *);
+
 	void (*ata_input_data)(ide_drive_t *, void *, u32);
 	void (*ata_output_data)(ide_drive_t *, void *, u32);
 

Re: [PATCH 8/8] ide: add ->cable_detect method to ide_hwif_t

[Sergei Shtylyov]

Hello.

Bartlomiej Zolnierkiewicz wrote:

> * Add ->cable_detect method to ide_hwif_t.

> * Call the new method in ide_init_port() if:
>   - the host supports UDMA modes > UDMA2 ('hwif->ultra_mask & 78')
>   - DMA initialization was successful (if hwif->dma_base is not set
>     ide_init_port() sets hwif->ultra_mask to zero)
>   - "idex=ata66" is not used ('hwif->cbl != ATA_CBL_PATA40_SHORT')

> * Convert PCI host drivers to use ->cable_detect method.

> While at it:

> * Factor out cable detection to separate functions (if not already done).

> * hpt366.c/it8213.c/slc90e66.c:
>   - don't check cable type if "idex=ata66" is used

> * pdc202xx_new.c:
>   - add __devinit tag to pdcnew_cable_detect()

> * pdc202xx_old.c:
>   - rename pdc202xx_old_cable_detect() to pdc2026x_old_cable_detect()
>   - add __devinit tag to pdc2026x_old_cable_detect()

> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

> Index: b/drivers/ide/ide-probe.c
> ===================================================================
> --- a/drivers/ide/ide-probe.c
> +++ b/drivers/ide/ide-probe.c
> @@ -1343,6 +1343,11 @@ static void ide_init_port(ide_hwif_t *hw
>  	/* call chipset specific routine for each enabled port */
>  	if (d->init_hwif)
>  		d->init_hwif(hwif);
> +
> +	if (hwif->cable_detect && (hwif->ultra_mask & 0x78)) {
> +		if (hwif->cbl != ATA_CBL_PATA40_SHORT)
> +			hwif->cbl = hwif->cable_detect(hwif);
> +	}

    Could be collapsed to a single *if* statement...

> Index: b/drivers/ide/pci/alim15x3.c
> ===================================================================
> --- a/drivers/ide/pci/alim15x3.c
> +++ b/drivers/ide/pci/alim15x3.c
> @@ -666,13 +666,12 @@ static void __devinit init_hwif_common_a
>  	hwif->set_dma_mode = &ali_set_dma_mode;
>  	hwif->udma_filter = &ali_udma_filter;
>  
> +	hwif->cable_detect = ata66_ali15x3;

    Why not give that function a "standard" name while at it?

>  static const struct ide_port_info atiixp_pci_info[] __devinitdata = {
> Index: b/drivers/ide/pci/cmd64x.c
> ===================================================================
> --- a/drivers/ide/pci/cmd64x.c
> +++ b/drivers/ide/pci/cmd64x.c
> @@ -393,6 +393,8 @@ static void __devinit init_hwif_cmd64x(i
>  	hwif->set_pio_mode = &cmd64x_set_pio_mode;
>  	hwif->set_dma_mode = &cmd64x_set_dma_mode;
>  
> +	hwif->cable_detect = ata66_cmd64x;
> +

    Same question...

> Index: b/drivers/ide/pci/hpt366.c
> ===================================================================
> --- a/drivers/ide/pci/hpt366.c
> +++ b/drivers/ide/pci/hpt366.c
> @@ -1279,12 +1279,55 @@ static unsigned int __devinit init_chips
>  	return dev->irq;
>  }
>  
> +static u8 __devinit hpt3xx_cable_detect(ide_hwif_t *hwif)
> +{
> +	struct pci_dev	*dev	= to_pci_dev(hwif->dev);
> +	struct hpt_info *info	= pci_get_drvdata(dev);
> +	u8 chip_type		= info->chip_type;
> +	u8 scr1 = 0, ata66	= hwif->channel ? 0x01 : 0x02;

    The 'ata66' is pretty bad name for this variable (reversed sense), let's 
go with 'mask'...

> +
> +	/*
> +	 * The HPT37x uses the CBLID pins as outputs for MA15/MA16
> +	 * address lines to access an external EEPROM.  To read valid
> +	 * cable detect state the pins must be enabled as inputs.
> +	 */
> +	if (chip_type == HPT374 && (PCI_FUNC(dev->devfn) & 1)) {
> +		/*
> +		 * HPT374 PCI function 1
> +		 * - set bit 15 of reg 0x52 to enable TCBLID as input
> +		 * - set bit 15 of reg 0x56 to enable FCBLID as input
> +		 */
> +		u8  mcr_addr = hwif->select_data + 2;
> +		u16 mcr;
> +
> +		pci_read_config_word(dev, mcr_addr, &mcr);
> +		pci_write_config_word(dev, mcr_addr, (mcr | 0x8000));
> +		/* now read cable id register */
> +		pci_read_config_byte(dev, 0x5a, &scr1);
> +		pci_write_config_word(dev, mcr_addr, mcr);
> +	} else if (chip_type >= HPT370) {
> +		/*
> +		 * HPT370/372 and 374 pcifn 0
> +		 * - clear bit 0 of reg 0x5b to enable P/SCBLID as inputs
> +		 */
> +		u8 scr2 = 0;
> +
> +		pci_read_config_byte(dev, 0x5b, &scr2);
> +		pci_write_config_byte(dev, 0x5b, (scr2 & ~1));
> +		/* now read cable id register */
> +		pci_read_config_byte(dev, 0x5a, &scr1);
> +		pci_write_config_byte(dev, 0x5b,  scr2);

    Sigh, my pretty formatting is gone... at least don't leave double spaces 
and needless parens. :-)

> +	} else
> +		pci_read_config_byte(dev, 0x5a, &scr1);
> +
> +	return (scr1 & ata66) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
> +}
> +
[...]
> --- a/drivers/ide/pci/it8213.c
> +++ b/drivers/ide/pci/it8213.c
> Index: b/drivers/ide/pci/it821x.c
> ===================================================================
> --- a/drivers/ide/pci/it821x.c
> +++ b/drivers/ide/pci/it821x.c
> @@ -579,14 +579,13 @@ static void __devinit init_hwif_it821x(i
>  	} else
>  		hwif->host_flags |= IDE_HFLAG_NO_SET_MODE;
>  
> +	hwif->cable_detect = ata66_it821x;
> +

    I think the function is really worth renaming...

>  static void __devinit it8212_disable_raid(struct pci_dev *dev)
> Index: b/drivers/ide/pci/jmicron.c
> ===================================================================
> --- a/drivers/ide/pci/jmicron.c
> +++ b/drivers/ide/pci/jmicron.c
> @@ -111,11 +111,7 @@ static void __devinit init_hwif_jmicron(
>  	hwif->set_pio_mode = &jmicron_set_pio_mode;
>  	hwif->set_dma_mode = &jmicron_set_dma_mode;
>  
> -	if (hwif->dma_base == 0)
> -		return;
> -
> -	if (hwif->cbl != ATA_CBL_PATA40_SHORT)
> -		hwif->cbl = ata66_jmicron(hwif);
> +	hwif->cable_detect = ata66_jmicron;

    And this one too...

> Index: b/drivers/ide/pci/pdc202xx_old.c
> ===================================================================
> --- a/drivers/ide/pci/pdc202xx_old.c
> +++ b/drivers/ide/pci/pdc202xx_old.c
> @@ -140,7 +140,7 @@ static void pdc202xx_set_pio_mode(ide_dr
>  	pdc202xx_set_mode(drive, XFER_PIO_0 + pio);
>  }
>  
> -static u8 pdc202xx_old_cable_detect (ide_hwif_t *hwif)
> +static u8 __devinit pdc2026x_old_cable_detect(ide_hwif_t *hwif)

    I suggest just pdc2026x_ without old_.

>  #define DECLARE_SCC_DEV(name_str)			\
> Index: b/drivers/ide/pci/serverworks.c
> ===================================================================
> --- a/drivers/ide/pci/serverworks.c
> +++ b/drivers/ide/pci/serverworks.c
> @@ -346,13 +346,8 @@ static void __devinit init_hwif_svwks (i
>  	hwif->set_dma_mode = &svwks_set_dma_mode;
>  	hwif->udma_filter = &svwks_udma_filter;
>  
> -	if (!hwif->dma_base)
> -		return;
> -
> -	if (dev->device != PCI_DEVICE_ID_SERVERWORKS_OSB4IDE) {
> -		if (hwif->cbl != ATA_CBL_PATA40_SHORT)
> -			hwif->cbl = ata66_svwks(hwif);
> -	}
> +	if (dev->device != PCI_DEVICE_ID_SERVERWORKS_OSB4IDE)
> +		hwif->cable_detect = ata66_svwks;

    Worth renaming...

> Index: b/drivers/ide/pci/siimage.c
> ===================================================================
> --- a/drivers/ide/pci/siimage.c
> +++ b/drivers/ide/pci/siimage.c
> @@ -827,15 +827,14 @@ static void __devinit init_hwif_siimage(
>  	} else
>  		hwif->udma_filter = &sil_pata_udma_filter;
>  
> +	hwif->cable_detect = ata66_siimage;
> +

    That one too...

> Index: b/drivers/ide/pci/sis5513.c
> ===================================================================
> --- a/drivers/ide/pci/sis5513.c
> +++ b/drivers/ide/pci/sis5513.c
> @@ -565,13 +565,12 @@ static void __devinit init_hwif_sis5513 
>  	if (chipset_family >= ATA_133)
>  		hwif->udma_filter = sis5513_ata133_udma_filter;
>  
> +	hwif->cable_detect = ata66_sis5513;
> +

   Another one...

MBR, Sergei