From 18137207236285989dfc0ee7f929b954199228f3 Mon Sep 17 00:00:00 2001
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Thu, 10 May 2007 00:01:07 +0200
Subject: ide: fix UDMA/MWDMA/SWDMA masks (v3)

* use 0x00 instead of 0x80 to disable ->{ultra,mwdma,swdma}_mask
* add udma_mask field to ide_pci_device_t and use it to initialize
  ->ultra_mask in aec62xx, cmd64x, pdc202xx_{new,old} and piix drivers
* fix UDMA masks to match with chipset specific *_ratemask()
  (alim15x3, hpt366, serverworks and siimage drivers need UDMA mask
   filtering method - done in the next patch)

v2:
* piix: fix cable detection for 82801AA_1 and 82372FB_1
  [ Noticed by Sergei Shtylyov <sshtylyov@ru.mvista.com>. ]
* cmd64x: use hwif->cds->udma_mask
  [ Suggested by Sergei Shtylyov <sshtylyov@ru.mvista.com>. ]
* aec62xx: fix newly introduced bug - check DMA status not command register
  [ Noticed by Sergei Shtylyov <sshtylyov@ru.mvista.com>. ]

v3:
* piix: use hwif->cds->udma_mask
  [ Suggested by Sergei Shtylyov <sshtylyov@ru.mvista.com>. ]

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/pci/aec62xx.c      | 19 +++++++++--
 drivers/ide/pci/alim15x3.c     | 13 ++++++--
 drivers/ide/pci/cmd64x.c       | 17 +++++-----
 drivers/ide/pci/pdc202xx_new.c | 10 +++++-
 drivers/ide/pci/pdc202xx_old.c |  7 +++-
 drivers/ide/pci/piix.c         | 73 ++++++++++++++++++------------------------
 drivers/ide/pci/sis5513.c      |  5 ++-
 7 files changed, 87 insertions(+), 57 deletions(-)

(limited to 'drivers/ide/pci')

diff --git a/drivers/ide/pci/aec62xx.c b/drivers/ide/pci/aec62xx.c
index 73bdf64dbbfc..abe0b1bb55ff 100644
--- a/drivers/ide/pci/aec62xx.c
+++ b/drivers/ide/pci/aec62xx.c
@@ -261,11 +261,13 @@ static unsigned int __devinit init_chipset_aec62xx(struct pci_dev *dev, const ch
 
 static void __devinit init_hwif_aec62xx(ide_hwif_t *hwif)
 {
+	struct pci_dev *dev = hwif->pci_dev;
+
 	hwif->autodma = 0;
 	hwif->tuneproc = &aec62xx_tune_drive;
 	hwif->speedproc = &aec62xx_tune_chipset;
 
-	if (hwif->pci_dev->device == PCI_DEVICE_ID_ARTOP_ATP850UF)
+	if (dev->device == PCI_DEVICE_ID_ARTOP_ATP850UF)
 		hwif->serialized = hwif->channel;
 
 	if (hwif->mate)
@@ -277,7 +279,15 @@ static void __devinit init_hwif_aec62xx(ide_hwif_t *hwif)
 		return;
 	}
 
-	hwif->ultra_mask = 0x7f;
+	hwif->ultra_mask = hwif->cds->udma_mask;
+
+	/* atp865 and atp865r */
+	if (hwif->ultra_mask == 0x3f) {
+		/* check bit 0x10 of DMA status register */
+		if (inb(pci_resource_start(dev, 4) + 2) & 0x10)
+ 			hwif->ultra_mask = 0x7f; /* udma0-6 */
+	}
+
 	hwif->mwdma_mask = 0x07;
 
 	hwif->ide_dma_check	= &aec62xx_config_drive_xfer_rate;
@@ -344,6 +354,7 @@ static ide_pci_device_t aec62xx_chipsets[] __devinitdata = {
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},
 		.bootable	= OFF_BOARD,
+		.udma_mask	= 0x07, /* udma0-2 */
 	},{	/* 1 */
 		.name		= "AEC6260",
 		.init_setup	= init_setup_aec62xx,
@@ -353,6 +364,7 @@ static ide_pci_device_t aec62xx_chipsets[] __devinitdata = {
 		.channels	= 2,
 		.autodma	= NOAUTODMA,
 		.bootable	= OFF_BOARD,
+		.udma_mask	= 0x1f, /* udma0-4 */
 	},{	/* 2 */
 		.name		= "AEC6260R",
 		.init_setup	= init_setup_aec62xx,
@@ -363,6 +375,7 @@ static ide_pci_device_t aec62xx_chipsets[] __devinitdata = {
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},
 		.bootable	= NEVER_BOARD,
+		.udma_mask	= 0x1f, /* udma0-4 */
 	},{	/* 3 */
 		.name		= "AEC6X80",
 		.init_setup	= init_setup_aec6x80,
@@ -372,6 +385,7 @@ static ide_pci_device_t aec62xx_chipsets[] __devinitdata = {
 		.channels	= 2,
 		.autodma	= AUTODMA,
 		.bootable	= OFF_BOARD,
+		.udma_mask	= 0x3f, /* udma0-5 */
 	},{	/* 4 */
 		.name		= "AEC6X80R",
 		.init_setup	= init_setup_aec6x80,
@@ -382,6 +396,7 @@ static ide_pci_device_t aec62xx_chipsets[] __devinitdata = {
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},
 		.bootable	= OFF_BOARD,
+		.udma_mask	= 0x3f, /* udma0-5 */
 	}
 };
 
diff --git a/drivers/ide/pci/alim15x3.c b/drivers/ide/pci/alim15x3.c
index 946a12746cb5..26c27d946c67 100644
--- a/drivers/ide/pci/alim15x3.c
+++ b/drivers/ide/pci/alim15x3.c
@@ -783,8 +783,17 @@ static void __devinit init_hwif_common_ali15x3 (ide_hwif_t *hwif)
 
 	hwif->atapi_dma = 1;
 
-	if (m5229_revision > 0x20)
-		hwif->ultra_mask = 0x7f;
+	if (m5229_revision <= 0x20)
+		hwif->ultra_mask = 0x00; /* no udma */
+	else if (m5229_revision < 0xC2)
+		hwif->ultra_mask = 0x07; /* udma0-2 */
+	else if (m5229_revision == 0xC2 || m5229_revision == 0xC3)
+		hwif->ultra_mask = 0x1f; /* udma0-4 */
+	else if (m5229_revision == 0xC4)
+		hwif->ultra_mask = 0x3f; /* udma0-5 */
+	else
+		hwif->ultra_mask = 0x7f; /* udma0-6 */
+
 	hwif->mwdma_mask = 0x07;
 	hwif->swdma_mask = 0x07;
 
diff --git a/drivers/ide/pci/cmd64x.c b/drivers/ide/pci/cmd64x.c
index 77f51ab6d439..610c45f7b4e2 100644
--- a/drivers/ide/pci/cmd64x.c
+++ b/drivers/ide/pci/cmd64x.c
@@ -644,15 +644,12 @@ static void __devinit init_hwif_cmd64x(ide_hwif_t *hwif)
 
 	hwif->atapi_dma = 1;
 
-	hwif->ultra_mask = 0x3f;
-	hwif->mwdma_mask = 0x07;
+	hwif->ultra_mask = hwif->cds->udma_mask;
+
+	if (dev->device == PCI_DEVICE_ID_CMD_646 && class_rev < 5)
+		hwif->ultra_mask = 0x00;
 
-	if (dev->device == PCI_DEVICE_ID_CMD_643)
-		hwif->ultra_mask = 0x80;
-	if (dev->device == PCI_DEVICE_ID_CMD_646)
-		hwif->ultra_mask = (class_rev > 0x04) ? 0x07 : 0x80;
-	if (dev->device == PCI_DEVICE_ID_CMD_648)
-		hwif->ultra_mask = 0x1f;
+	hwif->mwdma_mask = 0x07;
 
 	hwif->ide_dma_check = &cmd64x_config_drive_for_dma;
 	if (!(hwif->udma_four))
@@ -716,6 +713,7 @@ static ide_pci_device_t cmd64x_chipsets[] __devinitdata = {
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x00,0x00,0x00}, {0x51,0x08,0x08}},
 		.bootable	= ON_BOARD,
+		.udma_mask	= 0x00, /* no udma */
 	},{	/* 1 */
 		.name		= "CMD646",
 		.init_setup	= init_setup_cmd646,
@@ -725,6 +723,7 @@ static ide_pci_device_t cmd64x_chipsets[] __devinitdata = {
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
 		.bootable	= ON_BOARD,
+		.udma_mask	= 0x07, /* udma0-2 */
 	},{	/* 2 */
 		.name		= "CMD648",
 		.init_setup	= init_setup_cmd64x,
@@ -734,6 +733,7 @@ static ide_pci_device_t cmd64x_chipsets[] __devinitdata = {
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
 		.bootable	= ON_BOARD,
+		.udma_mask	= 0x1f, /* udma0-4 */
 	},{	/* 3 */
 		.name		= "CMD649",
 		.init_setup	= init_setup_cmd64x,
@@ -743,6 +743,7 @@ static ide_pci_device_t cmd64x_chipsets[] __devinitdata = {
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
 		.bootable	= ON_BOARD,
+		.udma_mask	= 0x3f, /* udma0-5 */
 	}
 };
 
diff --git a/drivers/ide/pci/pdc202xx_new.c b/drivers/ide/pci/pdc202xx_new.c
index 2cdd629c653d..a23853445af9 100644
--- a/drivers/ide/pci/pdc202xx_new.c
+++ b/drivers/ide/pci/pdc202xx_new.c
@@ -543,7 +543,8 @@ static void __devinit init_hwif_pdc202new(ide_hwif_t *hwif)
 	hwif->drives[0].autotune = hwif->drives[1].autotune = 1;
 
 	hwif->atapi_dma  = 1;
-	hwif->ultra_mask = 0x7f;
+
+	hwif->ultra_mask = hwif->cds->udma_mask;
 	hwif->mwdma_mask = 0x07;
 
 	hwif->err_stops_fifo = 1;
@@ -619,6 +620,7 @@ static ide_pci_device_t pdcnew_chipsets[] __devinitdata = {
 		.channels	= 2,
 		.autodma	= AUTODMA,
 		.bootable	= OFF_BOARD,
+		.udma_mask	= 0x3f, /* udma0-5 */
 	},{	/* 1 */
 		.name		= "PDC20269",
 		.init_setup	= init_setup_pdcnew,
@@ -627,6 +629,7 @@ static ide_pci_device_t pdcnew_chipsets[] __devinitdata = {
 		.channels	= 2,
 		.autodma	= AUTODMA,
 		.bootable	= OFF_BOARD,
+		.udma_mask	= 0x7f, /* udma0-6*/
 	},{	/* 2 */
 		.name		= "PDC20270",
 		.init_setup	= init_setup_pdc20270,
@@ -635,6 +638,7 @@ static ide_pci_device_t pdcnew_chipsets[] __devinitdata = {
 		.channels	= 2,
 		.autodma	= AUTODMA,
 		.bootable	= OFF_BOARD,
+		.udma_mask	= 0x3f, /* udma0-5 */
 	},{	/* 3 */
 		.name		= "PDC20271",
 		.init_setup	= init_setup_pdcnew,
@@ -643,6 +647,7 @@ static ide_pci_device_t pdcnew_chipsets[] __devinitdata = {
 		.channels	= 2,
 		.autodma	= AUTODMA,
 		.bootable	= OFF_BOARD,
+		.udma_mask	= 0x7f, /* udma0-6*/
 	},{	/* 4 */
 		.name		= "PDC20275",
 		.init_setup	= init_setup_pdcnew,
@@ -651,6 +656,7 @@ static ide_pci_device_t pdcnew_chipsets[] __devinitdata = {
 		.channels	= 2,
 		.autodma	= AUTODMA,
 		.bootable	= OFF_BOARD,
+		.udma_mask	= 0x7f, /* udma0-6*/
 	},{	/* 5 */
 		.name		= "PDC20276",
 		.init_setup	= init_setup_pdc20276,
@@ -659,6 +665,7 @@ static ide_pci_device_t pdcnew_chipsets[] __devinitdata = {
 		.channels	= 2,
 		.autodma	= AUTODMA,
 		.bootable	= OFF_BOARD,
+		.udma_mask	= 0x7f, /* udma0-6*/
 	},{	/* 6 */
 		.name		= "PDC20277",
 		.init_setup	= init_setup_pdcnew,
@@ -667,6 +674,7 @@ static ide_pci_device_t pdcnew_chipsets[] __devinitdata = {
 		.channels	= 2,
 		.autodma	= AUTODMA,
 		.bootable	= OFF_BOARD,
+		.udma_mask	= 0x7f, /* udma0-6*/
 	}
 };
 
diff --git a/drivers/ide/pci/pdc202xx_old.c b/drivers/ide/pci/pdc202xx_old.c
index a7a639fe1eaf..d7a38067fb34 100644
--- a/drivers/ide/pci/pdc202xx_old.c
+++ b/drivers/ide/pci/pdc202xx_old.c
@@ -478,7 +478,7 @@ static void __devinit init_hwif_pdc202xx(ide_hwif_t *hwif)
 
 	hwif->drives[0].autotune = hwif->drives[1].autotune = 1;
 
-	hwif->ultra_mask = 0x3f;
+	hwif->ultra_mask = hwif->cds->udma_mask;
 	hwif->mwdma_mask = 0x07;
 	hwif->swdma_mask = 0x07;
 	hwif->atapi_dma = 1;
@@ -587,6 +587,7 @@ static ide_pci_device_t pdc202xx_chipsets[] __devinitdata = {
 		.autodma	= AUTODMA,
 		.bootable	= OFF_BOARD,
 		.extra		= 16,
+		.udma_mask	= 0x07, /* udma0-2 */
 	},{	/* 1 */
 		.name		= "PDC20262",
 		.init_setup	= init_setup_pdc202ata4,
@@ -597,6 +598,7 @@ static ide_pci_device_t pdc202xx_chipsets[] __devinitdata = {
 		.autodma	= AUTODMA,
 		.bootable	= OFF_BOARD,
 		.extra		= 48,
+		.udma_mask	= 0x1f, /* udma0-4 */
 	},{	/* 2 */
 		.name		= "PDC20263",
 		.init_setup	= init_setup_pdc202ata4,
@@ -607,6 +609,7 @@ static ide_pci_device_t pdc202xx_chipsets[] __devinitdata = {
 		.autodma	= AUTODMA,
 		.bootable	= OFF_BOARD,
 		.extra		= 48,
+		.udma_mask	= 0x1f, /* udma0-4 */
 	},{	/* 3 */
 		.name		= "PDC20265",
 		.init_setup	= init_setup_pdc20265,
@@ -617,6 +620,7 @@ static ide_pci_device_t pdc202xx_chipsets[] __devinitdata = {
 		.autodma	= AUTODMA,
 		.bootable	= OFF_BOARD,
 		.extra		= 48,
+		.udma_mask	= 0x3f, /* udma0-5 */
 	},{	/* 4 */
 		.name		= "PDC20267",
 		.init_setup	= init_setup_pdc202xx,
@@ -627,6 +631,7 @@ static ide_pci_device_t pdc202xx_chipsets[] __devinitdata = {
 		.autodma	= AUTODMA,
 		.bootable	= OFF_BOARD,
 		.extra		= 48,
+		.udma_mask	= 0x3f, /* udma0-5 */
 	}
 };
 
diff --git a/drivers/ide/pci/piix.c b/drivers/ide/pci/piix.c
index 061d300ab8be..17ea44edb4eb 100644
--- a/drivers/ide/pci/piix.c
+++ b/drivers/ide/pci/piix.c
@@ -524,26 +524,14 @@ static void __devinit init_hwif_piix(ide_hwif_t *hwif)
 		hwif->ide_dma_clear_irq = &piix_dma_clear_irq;
 
 	hwif->atapi_dma = 1;
-	hwif->ultra_mask = 0x3f;
+
+	hwif->ultra_mask = hwif->cds->udma_mask;
 	hwif->mwdma_mask = 0x06;
 	hwif->swdma_mask = 0x04;
 
-	switch(hwif->pci_dev->device) {
-		case PCI_DEVICE_ID_INTEL_82371FB_0:
-		case PCI_DEVICE_ID_INTEL_82371FB_1:
-		case PCI_DEVICE_ID_INTEL_82371SB_1:
-			hwif->ultra_mask = 0x80;
-			break;
-		case PCI_DEVICE_ID_INTEL_82371AB:
-		case PCI_DEVICE_ID_INTEL_82443MX_1:
-		case PCI_DEVICE_ID_INTEL_82451NX:
-		case PCI_DEVICE_ID_INTEL_82801AB_1:
-			hwif->ultra_mask = 0x07;
-			break;
-		default:
-			if (!hwif->udma_four)
-				hwif->udma_four = piix_cable_detect(hwif);
-			break;
+	if (hwif->ultra_mask & 0x78) {
+		if (!hwif->udma_four)
+			hwif->udma_four = piix_cable_detect(hwif);
 	}
 
 	if (no_piix_dma)
@@ -557,7 +545,7 @@ static void __devinit init_hwif_piix(ide_hwif_t *hwif)
 	hwif->drives[0].autodma = hwif->autodma;
 }
 
-#define DECLARE_PIIX_DEV(name_str) \
+#define DECLARE_PIIX_DEV(name_str, udma) \
 	{						\
 		.name		= name_str,		\
 		.init_chipset	= init_chipset_piix,	\
@@ -566,11 +554,12 @@ static void __devinit init_hwif_piix(ide_hwif_t *hwif)
 		.autodma	= AUTODMA,		\
 		.enablebits	= {{0x41,0x80,0x80}, {0x43,0x80,0x80}}, \
 		.bootable	= ON_BOARD,		\
+		.udma_mask	= udma,			\
 	}
 
 static ide_pci_device_t piix_pci_info[] __devinitdata = {
-	/*  0 */ DECLARE_PIIX_DEV("PIIXa"),
-	/*  1 */ DECLARE_PIIX_DEV("PIIXb"),
+	/*  0 */ DECLARE_PIIX_DEV("PIIXa", 0x00),	/* no udma */
+	/*  1 */ DECLARE_PIIX_DEV("PIIXb", 0x00),	/* no udma */
 
 	/*  2 */
 	{	/*
@@ -587,28 +576,28 @@ static ide_pci_device_t piix_pci_info[] __devinitdata = {
 		.flags		= IDEPCI_FLAG_ISA_PORTS
 	},
 
-	/*  3 */ DECLARE_PIIX_DEV("PIIX3"),
-	/*  4 */ DECLARE_PIIX_DEV("PIIX4"),
-	/*  5 */ DECLARE_PIIX_DEV("ICH0"),
-	/*  6 */ DECLARE_PIIX_DEV("PIIX4"),
-	/*  7 */ DECLARE_PIIX_DEV("ICH"),
-	/*  8 */ DECLARE_PIIX_DEV("PIIX4"),
-	/*  9 */ DECLARE_PIIX_DEV("PIIX4"),
-	/* 10 */ DECLARE_PIIX_DEV("ICH2"),
-	/* 11 */ DECLARE_PIIX_DEV("ICH2M"),
-	/* 12 */ DECLARE_PIIX_DEV("ICH3M"),
-	/* 13 */ DECLARE_PIIX_DEV("ICH3"),
-	/* 14 */ DECLARE_PIIX_DEV("ICH4"),
-	/* 15 */ DECLARE_PIIX_DEV("ICH5"),
-	/* 16 */ DECLARE_PIIX_DEV("C-ICH"),
-	/* 17 */ DECLARE_PIIX_DEV("ICH4"),
-	/* 18 */ DECLARE_PIIX_DEV("ICH5-SATA"),
-	/* 19 */ DECLARE_PIIX_DEV("ICH5"),
-	/* 20 */ DECLARE_PIIX_DEV("ICH6"),
-	/* 21 */ DECLARE_PIIX_DEV("ICH7"),
-	/* 22 */ DECLARE_PIIX_DEV("ICH4"),
-	/* 23 */ DECLARE_PIIX_DEV("ESB2"),
-	/* 24 */ DECLARE_PIIX_DEV("ICH8M"),
+	/*  3 */ DECLARE_PIIX_DEV("PIIX3", 0x00),	/* no udma */
+	/*  4 */ DECLARE_PIIX_DEV("PIIX4", 0x07),	/* udma0-2 */
+	/*  5 */ DECLARE_PIIX_DEV("ICH0",  0x07),	/* udma0-2 */
+	/*  6 */ DECLARE_PIIX_DEV("PIIX4", 0x07),	/* udma0-2 */
+	/*  7 */ DECLARE_PIIX_DEV("ICH",   0x1f),	/* udma0-4 */
+	/*  8 */ DECLARE_PIIX_DEV("PIIX4", 0x1f),	/* udma0-4 */
+	/*  9 */ DECLARE_PIIX_DEV("PIIX4", 0x07),	/* udma0-2 */
+	/* 10 */ DECLARE_PIIX_DEV("ICH2",  0x3f),	/* udma0-5 */
+	/* 11 */ DECLARE_PIIX_DEV("ICH2M", 0x3f),	/* udma0-5 */
+	/* 12 */ DECLARE_PIIX_DEV("ICH3M", 0x3f),	/* udma0-5 */
+	/* 13 */ DECLARE_PIIX_DEV("ICH3",  0x3f),	/* udma0-5 */
+	/* 14 */ DECLARE_PIIX_DEV("ICH4",  0x3f),	/* udma0-5 */
+	/* 15 */ DECLARE_PIIX_DEV("ICH5",  0x3f),	/* udma0-5 */
+	/* 16 */ DECLARE_PIIX_DEV("C-ICH", 0x3f),	/* udma0-5 */
+	/* 17 */ DECLARE_PIIX_DEV("ICH4",  0x3f),	/* udma0-5 */
+	/* 18 */ DECLARE_PIIX_DEV("ICH5-SATA", 0x3f),	/* udma0-5 */
+	/* 19 */ DECLARE_PIIX_DEV("ICH5",  0x3f),	/* udma0-5 */
+	/* 20 */ DECLARE_PIIX_DEV("ICH6",  0x3f),	/* udma0-5 */
+	/* 21 */ DECLARE_PIIX_DEV("ICH7",  0x3f),	/* udma0-5 */
+	/* 22 */ DECLARE_PIIX_DEV("ICH4",  0x3f),	/* udma0-5 */
+	/* 23 */ DECLARE_PIIX_DEV("ESB2",  0x3f),	/* udma0-5 */
+	/* 24 */ DECLARE_PIIX_DEV("ICH8M", 0x3f),	/* udma0-5 */
 };
 
 /**
diff --git a/drivers/ide/pci/sis5513.c b/drivers/ide/pci/sis5513.c
index 2ba0669f36a1..6fe4ecb6c06c 100644
--- a/drivers/ide/pci/sis5513.c
+++ b/drivers/ide/pci/sis5513.c
@@ -858,6 +858,8 @@ static unsigned int __devinit ata66_sis5513 (ide_hwif_t *hwif)
 
 static void __devinit init_hwif_sis5513 (ide_hwif_t *hwif)
 {
+	u8 udma_rates[] = { 0x00, 0x00, 0x07, 0x1f, 0x3f, 0x3f, 0x7f, 0x7f };
+
 	hwif->autodma = 0;
 
 	if (!hwif->irq)
@@ -873,7 +875,8 @@ static void __devinit init_hwif_sis5513 (ide_hwif_t *hwif)
 	}
 
 	hwif->atapi_dma = 1;
-	hwif->ultra_mask = 0x7f;
+
+	hwif->ultra_mask = udma_rates[chipset_family];
 	hwif->mwdma_mask = 0x07;
 	hwif->swdma_mask = 0x07;
 
-- 
cgit v1.2.3


From 2d5eaa6dd744a641e75503232a01f52d0768884c Mon Sep 17 00:00:00 2001
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Thu, 10 May 2007 00:01:08 +0200
Subject: ide: rework the code for selecting the best DMA transfer mode (v3)

Depends on the "ide: fix UDMA/MWDMA/SWDMA masks" patch.

* add ide_hwif_t.udma_filter hook for filtering UDMA mask
  (use it in alim15x3, hpt366, siimage and serverworks drivers)
* add ide_max_dma_mode() for finding best DMA mode for the device
  (loosely based on some older libata-core.c code)
* convert ide_dma_speed() users to use ide_max_dma_mode()
* make ide_rate_filter() take "ide_drive_t *drive" as an argument instead
  of "u8 mode" and teach it to how to use UDMA mask to do filtering
* use ide_rate_filter() in hpt366 driver
* remove no longer needed ide_dma_speed() and *_ratemask()
* unexport eighty_ninty_three()

v2:
* rename ->filter_udma_mask to ->udma_filter
  [ Suggested by Sergei Shtylyov <sshtylyov@ru.mvista.com>. ]

v3:
* updated for scc_pata driver (fixes XFER_UDMA_6 filtering for user-space
  originated transfer mode change requests when 100MHz clock is used)

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/arm/icside.c       |   2 +-
 drivers/ide/cris/ide-cris.c    |   2 +-
 drivers/ide/ide-dma.c          |  74 ++++++++++++++++++++++++
 drivers/ide/ide-iops.c         |   2 -
 drivers/ide/ide-lib.c          | 125 ++++++-----------------------------------
 drivers/ide/ide.c              |   1 +
 drivers/ide/pci/aec62xx.c      |  32 +----------
 drivers/ide/pci/alim15x3.c     |  76 ++++++-------------------
 drivers/ide/pci/atiixp.c       |  20 +------
 drivers/ide/pci/cmd64x.c       |  65 +++++----------------
 drivers/ide/pci/cs5535.c       |  20 +------
 drivers/ide/pci/hpt34x.c       |   9 +--
 drivers/ide/pci/hpt366.c       |  67 +++++++++++-----------
 drivers/ide/pci/it8213.c       |  20 +------
 drivers/ide/pci/it821x.c       |  20 +------
 drivers/ide/pci/jmicron.c      |  21 +------
 drivers/ide/pci/pdc202xx_new.c |  14 +----
 drivers/ide/pci/pdc202xx_old.c |  27 +--------
 drivers/ide/pci/piix.c         |  66 +---------------------
 drivers/ide/pci/scc_pata.c     |  21 +------
 drivers/ide/pci/serverworks.c  |  31 ++++++----
 drivers/ide/pci/siimage.c      |  45 +++++++--------
 drivers/ide/pci/sis5513.c      |  14 +----
 drivers/ide/pci/slc90e66.c     |  13 +----
 drivers/ide/pci/tc86c001.c     |   9 +--
 drivers/ide/pci/triflex.c      |   4 +-
 include/linux/ide.h            |  10 ++--
 27 files changed, 236 insertions(+), 574 deletions(-)

(limited to 'drivers/ide/pci')

diff --git a/drivers/ide/arm/icside.c b/drivers/ide/arm/icside.c
index e2953fc1fafb..f383ace2a087 100644
--- a/drivers/ide/arm/icside.c
+++ b/drivers/ide/arm/icside.c
@@ -342,7 +342,7 @@ static int icside_dma_check(ide_drive_t *drive)
 	 * Enable DMA on any drive that has multiword DMA
 	 */
 	if (id->field_valid & 2) {
-		xfer_mode = ide_dma_speed(drive, 0);
+		xfer_mode = ide_max_dma_mode(drive);
 		goto out;
 	}
 
diff --git a/drivers/ide/cris/ide-cris.c b/drivers/ide/cris/ide-cris.c
index 5e8efc89255a..9691d089fce8 100644
--- a/drivers/ide/cris/ide-cris.c
+++ b/drivers/ide/cris/ide-cris.c
@@ -1004,7 +1004,7 @@ static int cris_ide_build_dmatable (ide_drive_t *drive)
 
 static int cris_config_drive_for_dma (ide_drive_t *drive)
 {
-	u8 speed = ide_dma_speed(drive, 1);
+	u8 speed = ide_max_dma_mode(drive);
 
 	if (!speed)
 		return 0;
diff --git a/drivers/ide/ide-dma.c b/drivers/ide/ide-dma.c
index fd213088b06b..f28fabb791fe 100644
--- a/drivers/ide/ide-dma.c
+++ b/drivers/ide/ide-dma.c
@@ -705,6 +705,80 @@ int ide_use_dma(ide_drive_t *drive)
 
 EXPORT_SYMBOL_GPL(ide_use_dma);
 
+static const u8 xfer_mode_bases[] = {
+	XFER_UDMA_0,
+	XFER_MW_DMA_0,
+	XFER_SW_DMA_0,
+};
+
+static unsigned int ide_get_mode_mask(ide_drive_t *drive, u8 base)
+{
+	struct hd_driveid *id = drive->id;
+	ide_hwif_t *hwif = drive->hwif;
+	unsigned int mask = 0;
+
+	switch(base) {
+	case XFER_UDMA_0:
+		if ((id->field_valid & 4) == 0)
+			break;
+
+		mask = id->dma_ultra & hwif->ultra_mask;
+
+		if (hwif->udma_filter)
+			mask &= hwif->udma_filter(drive);
+
+		if ((mask & 0x78) && (eighty_ninty_three(drive) == 0))
+			mask &= 0x07;
+		break;
+	case XFER_MW_DMA_0:
+		mask = id->dma_mword & hwif->mwdma_mask;
+		break;
+	case XFER_SW_DMA_0:
+		mask = id->dma_1word & hwif->swdma_mask;
+		break;
+	default:
+		BUG();
+		break;
+	}
+
+	return mask;
+}
+
+/**
+ *	ide_max_dma_mode	-	compute DMA speed
+ *	@drive: IDE device
+ *
+ *	Checks the drive capabilities and returns the speed to use
+ *	for the DMA transfer.  Returns 0 if the drive is incapable
+ *	of DMA transfers.
+ */
+
+u8 ide_max_dma_mode(ide_drive_t *drive)
+{
+	ide_hwif_t *hwif = drive->hwif;
+	unsigned int mask;
+	int x, i;
+	u8 mode = 0;
+
+	if (drive->media != ide_disk && hwif->atapi_dma == 0)
+		return 0;
+
+	for (i = 0; i < ARRAY_SIZE(xfer_mode_bases); i++) {
+		mask = ide_get_mode_mask(drive, xfer_mode_bases[i]);
+		x = fls(mask) - 1;
+		if (x >= 0) {
+			mode = xfer_mode_bases[i] + x;
+			break;
+		}
+	}
+
+	printk(KERN_DEBUG "%s: selected mode 0x%x\n", drive->name, mode);
+
+	return mode;
+}
+
+EXPORT_SYMBOL_GPL(ide_max_dma_mode);
+
 void ide_dma_verbose(ide_drive_t *drive)
 {
 	struct hd_driveid *id	= drive->id;
diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c
index 3caa176b3155..ed6128f6cd98 100644
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -592,8 +592,6 @@ u8 eighty_ninty_three (ide_drive_t *drive)
 	return 1;
 }
 
-EXPORT_SYMBOL(eighty_ninty_three);
-
 int ide_ata66_check (ide_drive_t *drive, ide_task_t *args)
 {
 	if ((args->tfRegister[IDE_COMMAND_OFFSET] == WIN_SETFEATURES) &&
diff --git a/drivers/ide/ide-lib.c b/drivers/ide/ide-lib.c
index 68719314df3f..4557fc5a3ea3 100644
--- a/drivers/ide/ide-lib.c
+++ b/drivers/ide/ide-lib.c
@@ -69,123 +69,34 @@ char *ide_xfer_verbose (u8 xfer_rate)
 EXPORT_SYMBOL(ide_xfer_verbose);
 
 /**
- *	ide_dma_speed	-	compute DMA speed
- *	@drive: drive
- *	@mode:	modes available
- *
- *	Checks the drive capabilities and returns the speed to use
- *	for the DMA transfer.  Returns 0 if the drive is incapable
- *	of DMA transfers.
- */
- 
-u8 ide_dma_speed(ide_drive_t *drive, u8 mode)
-{
-	struct hd_driveid *id   = drive->id;
-	ide_hwif_t *hwif	= HWIF(drive);
-	u8 ultra_mask, mwdma_mask, swdma_mask;
-	u8 speed = 0;
-
-	if (drive->media != ide_disk && hwif->atapi_dma == 0)
-		return 0;
-
-	/* Capable of UltraDMA modes? */
-	ultra_mask = id->dma_ultra & hwif->ultra_mask;
-
-	if (!(id->field_valid & 4))
-		mode = 0;	/* fallback to MW/SW DMA if no UltraDMA */
-
-	switch (mode) {
-	case 4:
-		if (ultra_mask & 0x40) {
-			speed = XFER_UDMA_6;
-			break;
-		}
-	case 3:
-		if (ultra_mask & 0x20) {
-			speed = XFER_UDMA_5;
-			break;
-		}
-	case 2:
-		if (ultra_mask & 0x10) {
-			speed = XFER_UDMA_4;
-			break;
-		}
-		if (ultra_mask & 0x08) {
-			speed = XFER_UDMA_3;
-			break;
-		}
-	case 1:
-		if (ultra_mask & 0x04) {
-			speed = XFER_UDMA_2;
-			break;
-		}
-		if (ultra_mask & 0x02) {
-			speed = XFER_UDMA_1;
-			break;
-		}
-		if (ultra_mask & 0x01) {
-			speed = XFER_UDMA_0;
-			break;
-		}
-	case 0:
-		mwdma_mask = id->dma_mword & hwif->mwdma_mask;
-
-		if (mwdma_mask & 0x04) {
-			speed = XFER_MW_DMA_2;
-			break;
-		}
-		if (mwdma_mask & 0x02) {
-			speed = XFER_MW_DMA_1;
-			break;
-		}
-		if (mwdma_mask & 0x01) {
-			speed = XFER_MW_DMA_0;
-			break;
-		}
-
-		swdma_mask = id->dma_1word & hwif->swdma_mask;
-
-		if (swdma_mask & 0x04) {
-			speed = XFER_SW_DMA_2;
-			break;
-		}
-		if (swdma_mask & 0x02) {
-			speed = XFER_SW_DMA_1;
-			break;
-		}
-		if (swdma_mask & 0x01) {
-			speed = XFER_SW_DMA_0;
-			break;
-		}
-	}
-
-	return speed;
-}
-EXPORT_SYMBOL(ide_dma_speed);
-
-
-/**
- *	ide_rate_filter		-	return best speed for mode
- *	@mode: modes available
+ *	ide_rate_filter		-	filter transfer mode
+ *	@drive: IDE device
  *	@speed: desired speed
  *
- *	Given the available DMA/UDMA mode this function returns
+ *	Given the available transfer modes this function returns
  *	the best available speed at or below the speed requested.
+ *
+ *	FIXME: filter also PIO/SWDMA/MWDMA modes
  */
 
-u8 ide_rate_filter (u8 mode, u8 speed) 
+u8 ide_rate_filter(ide_drive_t *drive, u8 speed)
 {
 #ifdef CONFIG_BLK_DEV_IDEDMA
-	static u8 speed_max[] = {
-		XFER_MW_DMA_2, XFER_UDMA_2, XFER_UDMA_4,
-		XFER_UDMA_5, XFER_UDMA_6
-	};
+	ide_hwif_t *hwif = drive->hwif;
+	u8 mask = hwif->ultra_mask, mode = XFER_MW_DMA_2;
+
+	if (hwif->udma_filter)
+		mask = hwif->udma_filter(drive);
+
+	if ((mask & 0x78) && (eighty_ninty_three(drive) == 0))
+		mask &= 0x07;
+
+	if (mask)
+		mode = fls(mask) - 1 + XFER_UDMA_0;
 
 //	printk("%s: mode 0x%02x, speed 0x%02x\n", __FUNCTION__, mode, speed);
 
-	/* So that we remember to update this if new modes appear */
-	BUG_ON(mode > 4);
-	return min(speed, speed_max[mode]);
+	return min(speed, mode);
 #else /* !CONFIG_BLK_DEV_IDEDMA */
 	return min(speed, (u8)XFER_PIO_4);
 #endif /* CONFIG_BLK_DEV_IDEDMA */
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index c06424fe647b..73f752142f9e 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -477,6 +477,7 @@ static void ide_hwif_restore(ide_hwif_t *hwif, ide_hwif_t *tmp_hwif)
 
 	hwif->tuneproc			= tmp_hwif->tuneproc;
 	hwif->speedproc			= tmp_hwif->speedproc;
+	hwif->udma_filter		= tmp_hwif->udma_filter;
 	hwif->selectproc		= tmp_hwif->selectproc;
 	hwif->reset_poll		= tmp_hwif->reset_poll;
 	hwif->pre_reset			= tmp_hwif->pre_reset;
diff --git a/drivers/ide/pci/aec62xx.c b/drivers/ide/pci/aec62xx.c
index abe0b1bb55ff..099539e8c7a3 100644
--- a/drivers/ide/pci/aec62xx.c
+++ b/drivers/ide/pci/aec62xx.c
@@ -87,38 +87,12 @@ static u8 pci_bus_clock_list_ultra (u8 speed, struct chipset_bus_clock_list_entr
 	return chipset_table->ultra_settings;
 }
 
-static u8 aec62xx_ratemask (ide_drive_t *drive)
-{
-	ide_hwif_t *hwif	= HWIF(drive);
-	u8 mode;
-
-	switch(hwif->pci_dev->device) {
-		case PCI_DEVICE_ID_ARTOP_ATP865:
-		case PCI_DEVICE_ID_ARTOP_ATP865R:
-			mode = (inb(hwif->channel ?
-				    hwif->mate->dma_status :
-				    hwif->dma_status) & 0x10) ? 4 : 3;
-			break;
-		case PCI_DEVICE_ID_ARTOP_ATP860:
-		case PCI_DEVICE_ID_ARTOP_ATP860R:
-			mode = 2;
-			break;
-		case PCI_DEVICE_ID_ARTOP_ATP850UF:
-		default:
-			return 1;
-	}
-
-	if (!eighty_ninty_three(drive))
-		mode = min(mode, (u8)1);
-	return mode;
-}
-
 static int aec6210_tune_chipset (ide_drive_t *drive, u8 xferspeed)
 {
 	ide_hwif_t *hwif	= HWIF(drive);
 	struct pci_dev *dev	= hwif->pci_dev;
 	u16 d_conf		= 0;
-	u8 speed	= ide_rate_filter(aec62xx_ratemask(drive), xferspeed);
+	u8 speed		= ide_rate_filter(drive, xferspeed);
 	u8 ultra = 0, ultra_conf = 0;
 	u8 tmp0 = 0, tmp1 = 0, tmp2 = 0;
 	unsigned long flags;
@@ -145,7 +119,7 @@ static int aec6260_tune_chipset (ide_drive_t *drive, u8 xferspeed)
 {
 	ide_hwif_t *hwif	= HWIF(drive);
 	struct pci_dev *dev	= hwif->pci_dev;
-	u8 speed	= ide_rate_filter(aec62xx_ratemask(drive), xferspeed);
+	u8 speed	= ide_rate_filter(drive, xferspeed);
 	u8 unit		= (drive->select.b.unit & 0x01);
 	u8 tmp1 = 0, tmp2 = 0;
 	u8 ultra = 0, drive_conf = 0, ultra_conf = 0;
@@ -183,7 +157,7 @@ static int aec62xx_tune_chipset (ide_drive_t *drive, u8 speed)
 
 static int config_chipset_for_dma (ide_drive_t *drive)
 {
-	u8 speed = ide_dma_speed(drive, aec62xx_ratemask(drive));	
+	u8 speed = ide_max_dma_mode(drive);
 
 	if (!(speed))
 		return 0;
diff --git a/drivers/ide/pci/alim15x3.c b/drivers/ide/pci/alim15x3.c
index 26c27d946c67..76643b626bdd 100644
--- a/drivers/ide/pci/alim15x3.c
+++ b/drivers/ide/pci/alim15x3.c
@@ -378,74 +378,31 @@ static void ali15x3_tune_drive (ide_drive_t *drive, u8 pio)
 }
 
 /**
- *	ali15x3_can_ultra	-	check for ultra DMA support
- *	@drive: drive to do the check
+ *	ali_udma_filter		-	compute UDMA mask
+ *	@drive: IDE device
  *
- *	Check the drive and controller revisions. Return 0 if UDMA is
- *	not available, or 1 if UDMA can be used. The actual rules for
- *	the ALi are
+ *	Return available UDMA modes.
+ *
+ *	The actual rules for the ALi are:
  *		No UDMA on revisions <= 0x20
  *		Disk only for revisions < 0xC2
  *		Not WDC drives for revisions < 0xC2
  *
  *	FIXME: WDC ifdef needs to die
  */
- 
-static u8 ali15x3_can_ultra (ide_drive_t *drive)
-{
-#ifndef CONFIG_WDC_ALI15X3
-	struct hd_driveid *id	= drive->id;
-#endif /* CONFIG_WDC_ALI15X3 */
-
-	if (m5229_revision <= 0x20) {
-		return 0;
-	} else if ((m5229_revision < 0xC2) &&
-#ifndef CONFIG_WDC_ALI15X3
-		   ((chip_is_1543c_e && strstr(id->model, "WDC ")) ||
-		    (drive->media!=ide_disk))) {
-#else /* CONFIG_WDC_ALI15X3 */
-		   (drive->media!=ide_disk)) {
-#endif /* CONFIG_WDC_ALI15X3 */
-		return 0;
-	} else {
-		return 1;
-	}
-}
 
-/**
- *	ali15x3_ratemask	-	generate DMA mode list
- *	@drive: drive to compute against
- *
- *	Generate a list of the available DMA modes for the drive. 
- *	FIXME: this function contains lots of bogus masking we can dump
- *
- *	Return the highest available mode (UDMA33, UDMA66, UDMA100,..)
- */
- 
-static u8 ali15x3_ratemask (ide_drive_t *drive)
+static u8 ali_udma_filter(ide_drive_t *drive)
 {
-	u8 mode = 0, can_ultra	= ali15x3_can_ultra(drive);
-
-	if (m5229_revision > 0xC4 && can_ultra) {
-		mode = 4;
-	} else if (m5229_revision == 0xC4 && can_ultra) {
-		mode = 3;
-	} else if (m5229_revision >= 0xC2 && can_ultra) {
-		mode = 2;
-	} else if (can_ultra) {
-		return 1;
-	} else {
-		return 0;
+	if (m5229_revision > 0x20 && m5229_revision < 0xC2) {
+		if (drive->media != ide_disk)
+			return 0;
+#ifndef CONFIG_WDC_ALI15X3
+		if (chip_is_1543c_e && strstr(drive->id->model, "WDC "))
+			return 0;
+#endif
 	}
 
-	/*
-	 *	If the drive sees no suitable cable then UDMA 33
-	 *	is the highest permitted mode
-	 */
-	 
-	if (!eighty_ninty_three(drive))
-		mode = min(mode, (u8)1);
-	return mode;
+	return drive->hwif->ultra_mask;
 }
 
 /**
@@ -461,7 +418,7 @@ static int ali15x3_tune_chipset (ide_drive_t *drive, u8 xferspeed)
 {
 	ide_hwif_t *hwif	= HWIF(drive);
 	struct pci_dev *dev	= hwif->pci_dev;
-	u8 speed		= ide_rate_filter(ali15x3_ratemask(drive), xferspeed);
+	u8 speed		= ide_rate_filter(drive, xferspeed);
 	u8 speed1		= speed;
 	u8 unit			= (drive->select.b.unit & 0x01);
 	u8 tmpbyte		= 0x00;
@@ -511,7 +468,7 @@ static int ali15x3_tune_chipset (ide_drive_t *drive, u8 xferspeed)
  
 static int config_chipset_for_dma (ide_drive_t *drive)
 {
-	u8 speed = ide_dma_speed(drive, ali15x3_ratemask(drive));
+	u8 speed = ide_max_dma_mode(drive);
 
 	if (!(speed))
 		return 0;
@@ -771,6 +728,7 @@ static void __devinit init_hwif_common_ali15x3 (ide_hwif_t *hwif)
 	hwif->autodma = 0;
 	hwif->tuneproc = &ali15x3_tune_drive;
 	hwif->speedproc = &ali15x3_tune_chipset;
+	hwif->udma_filter = &ali_udma_filter;
 
 	/* don't use LBA48 DMA on ALi devices before rev 0xC5 */
 	hwif->no_lba48_dma = (m5229_revision <= 0xC4) ? 1 : 0;
diff --git a/drivers/ide/pci/atiixp.c b/drivers/ide/pci/atiixp.c
index 2d48af32e3f4..f7e80d6076d7 100644
--- a/drivers/ide/pci/atiixp.c
+++ b/drivers/ide/pci/atiixp.c
@@ -48,22 +48,6 @@ static int save_mdma_mode[4];
 
 static DEFINE_SPINLOCK(atiixp_lock);
 
-/**
- *	atiixp_ratemask		-	compute rate mask for ATIIXP IDE
- *	@drive: IDE drive to compute for
- *
- *	Returns the available modes for the ATIIXP IDE controller.
- */
-
-static u8 atiixp_ratemask(ide_drive_t *drive)
-{
-	u8 mode = 3;
-
-	if (!eighty_ninty_three(drive))
-		mode = min(mode, (u8)1);
-	return mode;
-}
-
 /**
  *	atiixp_dma_2_pio		-	return the PIO mode matching DMA
  *	@xfer_rate: transfer speed
@@ -189,7 +173,7 @@ static int atiixp_speedproc(ide_drive_t *drive, u8 xferspeed)
 	u16 tmp16;
 	u8 speed, pio;
 
-	speed = ide_rate_filter(atiixp_ratemask(drive), xferspeed);
+	speed = ide_rate_filter(drive, xferspeed);
 
 	spin_lock_irqsave(&atiixp_lock, flags);
 
@@ -233,7 +217,7 @@ static int atiixp_speedproc(ide_drive_t *drive, u8 xferspeed)
 
 static int atiixp_config_drive_for_dma(ide_drive_t *drive)
 {
-	u8 speed = ide_dma_speed(drive, atiixp_ratemask(drive));
+	u8 speed = ide_max_dma_mode(drive);
 
 	if (!speed)
 		return 0;
diff --git a/drivers/ide/pci/cmd64x.c b/drivers/ide/pci/cmd64x.c
index 610c45f7b4e2..19f5ac1f866c 100644
--- a/drivers/ide/pci/cmd64x.c
+++ b/drivers/ide/pci/cmd64x.c
@@ -292,55 +292,6 @@ static void cmd64x_tune_drive (ide_drive_t *drive, u8 pio)
 	(void) ide_config_drive_speed(drive, XFER_PIO_0 + pio);
 }
 
-static u8 cmd64x_ratemask (ide_drive_t *drive)
-{
-	struct pci_dev *dev	= HWIF(drive)->pci_dev;
-	u8 mode = 0;
-
-	switch(dev->device) {
-		case PCI_DEVICE_ID_CMD_649:
-			mode = 3;
-			break;
-		case PCI_DEVICE_ID_CMD_648:
-			mode = 2;
-			break;
-		case PCI_DEVICE_ID_CMD_643:
-			return 0;
-
-		case PCI_DEVICE_ID_CMD_646:
-		{
-			unsigned int class_rev	= 0;
-			pci_read_config_dword(dev,
-				PCI_CLASS_REVISION, &class_rev);
-			class_rev &= 0xff;
-		/*
-		 * UltraDMA only supported on PCI646U and PCI646U2, which
-		 * correspond to revisions 0x03, 0x05 and 0x07 respectively.
-		 * Actually, although the CMD tech support people won't
-		 * tell me the details, the 0x03 revision cannot support
-		 * UDMA correctly without hardware modifications, and even
-		 * then it only works with Quantum disks due to some
-		 * hold time assumptions in the 646U part which are fixed
-		 * in the 646U2.
-		 *
-		 * So we only do UltraDMA on revision 0x05 and 0x07 chipsets.
-		 */
-			switch(class_rev) {
-				case 0x07:
-				case 0x05:
-					return 1;
-				case 0x03:
-				case 0x01:
-				default:
-					return 0;
-			}
-		}
-	}
-	if (!eighty_ninty_three(drive))
-		mode = min(mode, (u8)1);
-	return mode;
-}
-
 static int cmd64x_tune_chipset (ide_drive_t *drive, u8 speed)
 {
 	ide_hwif_t *hwif	= HWIF(drive);
@@ -348,7 +299,7 @@ static int cmd64x_tune_chipset (ide_drive_t *drive, u8 speed)
 	u8 unit			= drive->dn & 0x01;
 	u8 regU = 0, pciU	= hwif->channel ? UDIDETCR1 : UDIDETCR0;
 
-	speed = ide_rate_filter(cmd64x_ratemask(drive), speed);
+	speed = ide_rate_filter(drive, speed);
 
 	if (speed >= XFER_SW_DMA_0) {
 		(void) pci_read_config_byte(dev, pciU, &regU);
@@ -403,7 +354,7 @@ static int cmd64x_tune_chipset (ide_drive_t *drive, u8 speed)
 
 static int config_chipset_for_dma (ide_drive_t *drive)
 {
-	u8 speed	= ide_dma_speed(drive, cmd64x_ratemask(drive));
+	u8 speed = ide_max_dma_mode(drive);
 
 	if (!speed)
 		return 0;
@@ -646,6 +597,18 @@ static void __devinit init_hwif_cmd64x(ide_hwif_t *hwif)
 
 	hwif->ultra_mask = hwif->cds->udma_mask;
 
+	/*
+	 * UltraDMA only supported on PCI646U and PCI646U2, which
+	 * correspond to revisions 0x03, 0x05 and 0x07 respectively.
+	 * Actually, although the CMD tech support people won't
+	 * tell me the details, the 0x03 revision cannot support
+	 * UDMA correctly without hardware modifications, and even
+	 * then it only works with Quantum disks due to some
+	 * hold time assumptions in the 646U part which are fixed
+	 * in the 646U2.
+	 *
+	 * So we only do UltraDMA on revision 0x05 and 0x07 chipsets.
+	 */
 	if (dev->device == PCI_DEVICE_ID_CMD_646 && class_rev < 5)
 		hwif->ultra_mask = 0x00;
 
diff --git a/drivers/ide/pci/cs5535.c b/drivers/ide/pci/cs5535.c
index 45f43efbf92c..66a101e470d0 100644
--- a/drivers/ide/pci/cs5535.c
+++ b/drivers/ide/pci/cs5535.c
@@ -127,20 +127,6 @@ static void cs5535_set_speed(ide_drive_t *drive, u8 speed)
 	}
 }
 
-static u8 cs5535_ratemask(ide_drive_t *drive)
-{
-	/* eighty93 will return 1 if it's 80core and capable of
-	exceeding udma2, 0 otherwise. we need ratemask to set
-	the max speed and if we can > udma2 then we return 2
-	which selects speed_max as udma4 which is the 5535's max
-	speed, and 1 selects udma2 which is the max for 40c */
-	if (!eighty_ninty_three(drive))
-		return 1;
-
-	return 2;
-}
-
-
 /****
  *	cs5535_set_drive         -     Configure the drive to the new speed
  *	@drive: Drive to set up
@@ -151,7 +137,7 @@ static u8 cs5535_ratemask(ide_drive_t *drive)
  */
 static int cs5535_set_drive(ide_drive_t *drive, u8 speed)
 {
-	speed = ide_rate_filter(cs5535_ratemask(drive), speed);
+	speed = ide_rate_filter(drive, speed);
 	ide_config_drive_speed(drive, speed);
 	cs5535_set_speed(drive, speed);
 
@@ -180,9 +166,7 @@ static void cs5535_tuneproc(ide_drive_t *drive, u8 xferspeed)
 
 static int cs5535_config_drive_for_dma(ide_drive_t *drive)
 {
-	u8 speed;
-
-	speed = ide_dma_speed(drive, cs5535_ratemask(drive));
+	u8 speed = ide_max_dma_mode(drive);
 
 	/* If no DMA speed was available then let dma_check hit pio */
 	if (!speed) {
diff --git a/drivers/ide/pci/hpt34x.c b/drivers/ide/pci/hpt34x.c
index 924eaa3a5708..473e1b33dbf7 100644
--- a/drivers/ide/pci/hpt34x.c
+++ b/drivers/ide/pci/hpt34x.c
@@ -43,15 +43,10 @@
 
 #define HPT343_DEBUG_DRIVE_INFO		0
 
-static u8 hpt34x_ratemask (ide_drive_t *drive)
-{
-	return 1;
-}
-
 static int hpt34x_tune_chipset (ide_drive_t *drive, u8 xferspeed)
 {
 	struct pci_dev *dev	= HWIF(drive)->pci_dev;
-	u8 speed	= ide_rate_filter(hpt34x_ratemask(drive), xferspeed);
+	u8 speed = ide_rate_filter(drive, xferspeed);
 	u32 reg1= 0, tmp1 = 0, reg2 = 0, tmp2 = 0;
 	u8			hi_speed, lo_speed;
 
@@ -98,7 +93,7 @@ static void hpt34x_tune_drive (ide_drive_t *drive, u8 pio)
 
 static int config_chipset_for_dma (ide_drive_t *drive)
 {
-	u8 speed = ide_dma_speed(drive, hpt34x_ratemask(drive));
+	u8 speed = ide_max_dma_mode(drive);
 
 	if (!(speed))
 		return 0;
diff --git a/drivers/ide/pci/hpt366.c b/drivers/ide/pci/hpt366.c
index cf9d344d19f8..de5ad9c35dc6 100644
--- a/drivers/ide/pci/hpt366.c
+++ b/drivers/ide/pci/hpt366.c
@@ -514,43 +514,31 @@ static int check_in_drive_list(ide_drive_t *drive, const char **list)
 	return 0;
 }
 
-static u8 hpt3xx_ratemask(ide_drive_t *drive)
-{
-	struct hpt_info *info	= pci_get_drvdata(HWIF(drive)->pci_dev);
-	u8 mode			= info->max_mode;
-
-	if (!eighty_ninty_three(drive) && mode)
-		mode = min(mode, (u8)1);
-	return mode;
-}
-
 /*
  *	Note for the future; the SATA hpt37x we must set
  *	either PIO or UDMA modes 0,4,5
  */
- 
-static u8 hpt3xx_ratefilter(ide_drive_t *drive, u8 speed)
+
+static u8 hpt3xx_udma_filter(ide_drive_t *drive)
 {
 	struct hpt_info *info	= pci_get_drvdata(HWIF(drive)->pci_dev);
 	u8 chip_type		= info->chip_type;
-	u8 mode			= hpt3xx_ratemask(drive);
-
-	if (drive->media != ide_disk)
-		return min(speed, (u8)XFER_PIO_4);
+	u8 mode			= info->max_mode;
+	u8 mask;
 
 	switch (mode) {
 		case 0x04:
-			speed = min_t(u8, speed, XFER_UDMA_6);
+			mask = 0x7f;
 			break;
 		case 0x03:
-			speed = min_t(u8, speed, XFER_UDMA_5);
+			mask = 0x3f;
 			if (chip_type >= HPT374)
 				break;
 			if (!check_in_drive_list(drive, bad_ata100_5))
 				goto check_bad_ata33;
 			/* fall thru */
 		case 0x02:
-			speed = min_t(u8, speed, XFER_UDMA_4);
+			mask = 0x1f;
 
 			/*
 			 * CHECK ME, Does this need to be changed to HPT374 ??
@@ -561,13 +549,13 @@ static u8 hpt3xx_ratefilter(ide_drive_t *drive, u8 speed)
 			    !check_in_drive_list(drive, bad_ata66_4))
 				goto check_bad_ata33;
 
-			speed = min_t(u8, speed, XFER_UDMA_3);
+			mask = 0x0f;
 			if (HPT366_ALLOW_ATA66_3 &&
 			    !check_in_drive_list(drive, bad_ata66_3))
 				goto check_bad_ata33;
 			/* fall thru */
 		case 0x01:
-			speed = min_t(u8, speed, XFER_UDMA_2);
+			mask = 0x07;
 
 		check_bad_ata33:
 			if (chip_type >= HPT370A)
@@ -577,10 +565,10 @@ static u8 hpt3xx_ratefilter(ide_drive_t *drive, u8 speed)
 			/* fall thru */
 		case 0x00:
 		default:
-			speed = min_t(u8, speed, XFER_MW_DMA_2);
+			mask = 0x00;
 			break;
 	}
-	return speed;
+	return mask;
 }
 
 static u32 get_speed_setting(u8 speed, struct hpt_info *info)
@@ -608,12 +596,19 @@ static int hpt36x_tune_chipset(ide_drive_t *drive, u8 xferspeed)
 	ide_hwif_t *hwif	= HWIF(drive);
 	struct pci_dev  *dev	= hwif->pci_dev;
 	struct hpt_info	*info	= pci_get_drvdata(dev);
-	u8  speed		= hpt3xx_ratefilter(drive, xferspeed);
+	u8  speed		= ide_rate_filter(drive, xferspeed);
 	u8  itr_addr		= drive->dn ? 0x44 : 0x40;
-	u32 itr_mask		= speed < XFER_MW_DMA_0 ? 0x30070000 :
-				 (speed < XFER_UDMA_0   ? 0xc0070000 : 0xc03800ff);
-	u32 new_itr		= get_speed_setting(speed, info);
 	u32 old_itr		= 0;
+	u32 itr_mask, new_itr;
+
+	/* TODO: move this to ide_rate_filter() [ check ->atapi_dma ] */
+	if (drive->media != ide_disk)
+		speed = min_t(u8, speed, XFER_PIO_4);
+
+	itr_mask = speed < XFER_MW_DMA_0 ? 0x30070000 :
+		  (speed < XFER_UDMA_0   ? 0xc0070000 : 0xc03800ff);
+
+	new_itr = get_speed_setting(speed, info);
 
 	/*
 	 * Disable on-chip PIO FIFO/buffer (and PIO MST mode as well)
@@ -633,12 +628,19 @@ static int hpt37x_tune_chipset(ide_drive_t *drive, u8 xferspeed)
 	ide_hwif_t *hwif	= HWIF(drive);
 	struct pci_dev  *dev	= hwif->pci_dev;
 	struct hpt_info	*info	= pci_get_drvdata(dev);
-	u8  speed		= hpt3xx_ratefilter(drive, xferspeed);
+	u8  speed		= ide_rate_filter(drive, xferspeed);
 	u8  itr_addr		= 0x40 + (drive->dn * 4);
-	u32 itr_mask		= speed < XFER_MW_DMA_0 ? 0x303c0000 :
-				 (speed < XFER_UDMA_0   ? 0xc03c0000 : 0xc1c001ff);
-	u32 new_itr		= get_speed_setting(speed, info);
 	u32 old_itr		= 0;
+	u32 itr_mask, new_itr;
+
+	/* TODO: move this to ide_rate_filter() [ check ->atapi_dma ] */
+	if (drive->media != ide_disk)
+		speed = min_t(u8, speed, XFER_PIO_4);
+
+	itr_mask = speed < XFER_MW_DMA_0 ? 0x303c0000 :
+		  (speed < XFER_UDMA_0   ? 0xc03c0000 : 0xc1c001ff);
+
+	new_itr = get_speed_setting(speed, info);
 
 	pci_read_config_dword(dev, itr_addr, &old_itr);
 	new_itr = (new_itr & ~itr_mask) | (old_itr & itr_mask);
@@ -676,7 +678,7 @@ static void hpt3xx_tune_drive(ide_drive_t *drive, u8 pio)
  */
 static int config_chipset_for_dma(ide_drive_t *drive)
 {
-	u8 speed = ide_dma_speed(drive, hpt3xx_ratemask(drive));
+	u8 speed = ide_max_dma_mode(drive);
 
 	if (!speed)
 		return 0;
@@ -1271,6 +1273,7 @@ static void __devinit init_hwif_hpt366(ide_hwif_t *hwif)
 	hwif->intrproc			= &hpt3xx_intrproc;
 	hwif->maskproc			= &hpt3xx_maskproc;
 	hwif->busproc			= &hpt3xx_busproc;
+	hwif->udma_filter		= &hpt3xx_udma_filter;
 
 	/*
 	 * HPT3xxN chips have some complications:
diff --git a/drivers/ide/pci/it8213.c b/drivers/ide/pci/it8213.c
index 424f00bb160d..02b56cb7bb1b 100644
--- a/drivers/ide/pci/it8213.c
+++ b/drivers/ide/pci/it8213.c
@@ -17,22 +17,6 @@
 
 #include <asm/io.h>
 
-/*
- *	it8213_ratemask	-	Compute available modes
- *	@drive: IDE drive
- *
- *	Compute the available speeds for the devices on the interface. This
- *	is all modes to ATA133 clipped by drive cable setup.
- */
-
-static u8 it8213_ratemask (ide_drive_t *drive)
-{
-	u8 mode	= 4;
-	if (!eighty_ninty_three(drive))
-		mode = min_t(u8, mode, 1);
-	return mode;
-}
-
 /**
  *	it8213_dma_2_pio		-	return the PIO mode matching DMA
  *	@xfer_rate: transfer speed
@@ -145,7 +129,7 @@ static int it8213_tune_chipset (ide_drive_t *drive, u8 xferspeed)
 	ide_hwif_t *hwif	= HWIF(drive);
 	struct pci_dev *dev	= hwif->pci_dev;
 	u8 maslave		= 0x40;
-	u8 speed		= ide_rate_filter(it8213_ratemask(drive), xferspeed);
+	u8 speed		= ide_rate_filter(drive, xferspeed);
 	int a_speed		= 3 << (drive->dn * 4);
 	int u_flag		= 1 << drive->dn;
 	int v_flag		= 0x01 << drive->dn;
@@ -222,7 +206,7 @@ static int it8213_tune_chipset (ide_drive_t *drive, u8 xferspeed)
 
 static int config_chipset_for_dma (ide_drive_t *drive)
 {
-	u8 speed = ide_dma_speed(drive, it8213_ratemask(drive));
+	u8 speed = ide_max_dma_mode(drive);
 
 	if (!speed)
 		return 0;
diff --git a/drivers/ide/pci/it821x.c b/drivers/ide/pci/it821x.c
index 4e1254813ee0..442f658c6ae7 100644
--- a/drivers/ide/pci/it821x.c
+++ b/drivers/ide/pci/it821x.c
@@ -228,22 +228,6 @@ static void it821x_clock_strategy(ide_drive_t *drive)
 	}
 }
 
-/**
- *	it821x_ratemask	-	Compute available modes
- *	@drive: IDE drive
- *
- *	Compute the available speeds for the devices on the interface. This
- *	is all modes to ATA133 clipped by drive cable setup.
- */
-
-static u8 it821x_ratemask (ide_drive_t *drive)
-{
-	u8 mode	= 4;
-	if (!eighty_ninty_three(drive))
-		mode = min(mode, (u8)1);
-	return mode;
-}
-
 /**
  *	it821x_tunepio	-	tune a drive
  *	@drive: drive to tune
@@ -438,7 +422,7 @@ static int it821x_tune_chipset (ide_drive_t *drive, byte xferspeed)
 
 	ide_hwif_t *hwif	= drive->hwif;
 	struct it821x_dev *itdev = ide_get_hwifdata(hwif);
-	u8 speed		= ide_rate_filter(it821x_ratemask(drive), xferspeed);
+	u8 speed		= ide_rate_filter(drive, xferspeed);
 
 	switch (speed) {
 	case XFER_PIO_4:
@@ -488,7 +472,7 @@ static int it821x_tune_chipset (ide_drive_t *drive, byte xferspeed)
 
 static int config_chipset_for_dma (ide_drive_t *drive)
 {
-	u8 speed	= ide_dma_speed(drive, it821x_ratemask(drive));
+	u8 speed = ide_max_dma_mode(drive);
 
 	if (speed == 0)
 		return 0;
diff --git a/drivers/ide/pci/jmicron.c b/drivers/ide/pci/jmicron.c
index be4fc96c29e0..dbb3c199cba9 100644
--- a/drivers/ide/pci/jmicron.c
+++ b/drivers/ide/pci/jmicron.c
@@ -21,22 +21,6 @@ typedef enum {
 	PORT_SATA = 2,
 } port_type;
 
-/**
- *	jmicron_ratemask	-	Compute available modes
- *	@drive: IDE drive
- *
- *	Compute the available speeds for the devices on the interface. This
- *	is all modes to ATA133 clipped by drive cable setup.
- */
-
-static u8 jmicron_ratemask(ide_drive_t *drive)
-{
-	u8 mode	= 4;
-	if (!eighty_ninty_three(drive))
-		mode = min(mode, (u8)1);
-	return mode;
-}
-
 /**
  *	ata66_jmicron		-	Cable check
  *	@hwif: IDE port
@@ -129,8 +113,7 @@ static void config_jmicron_chipset_for_pio (ide_drive_t *drive, byte set_speed)
 
 static int jmicron_tune_chipset (ide_drive_t *drive, byte xferspeed)
 {
-
-	u8 speed		= ide_rate_filter(jmicron_ratemask(drive), xferspeed);
+	u8 speed = ide_rate_filter(drive, xferspeed);
 
 	return ide_config_drive_speed(drive, speed);
 }
@@ -145,7 +128,7 @@ static int jmicron_tune_chipset (ide_drive_t *drive, byte xferspeed)
 
 static int config_chipset_for_dma (ide_drive_t *drive)
 {
-	u8 speed	= ide_dma_speed(drive, jmicron_ratemask(drive));
+	u8 speed = ide_max_dma_mode(drive);
 
 	if (!speed)
 		return 0;
diff --git a/drivers/ide/pci/pdc202xx_new.c b/drivers/ide/pci/pdc202xx_new.c
index a23853445af9..772ca4007de4 100644
--- a/drivers/ide/pci/pdc202xx_new.c
+++ b/drivers/ide/pci/pdc202xx_new.c
@@ -82,16 +82,6 @@ static u8 max_dma_rate(struct pci_dev *pdev)
 	return mode;
 }
 
-static u8 pdcnew_ratemask(ide_drive_t *drive)
-{
-	u8 mode = max_dma_rate(HWIF(drive)->pci_dev);
-
-	if (!eighty_ninty_three(drive))
-		mode = min_t(u8, mode, 1);
-
-	return	mode;
-}
-
 /**
  * get_indexed_reg - Get indexed register
  * @hwif: for the port address
@@ -164,7 +154,7 @@ static int pdcnew_tune_chipset(ide_drive_t *drive, u8 speed)
 	u8 adj			= (drive->dn & 1) ? 0x08 : 0x00;
 	int			err;
 
-	speed = ide_rate_filter(pdcnew_ratemask(drive), speed);
+	speed = ide_rate_filter(drive, speed);
 
 	/*
 	 * Issue SETFEATURES_XFER to the drive first. PDC202xx hardware will
@@ -267,7 +257,7 @@ static int config_chipset_for_dma(ide_drive_t *drive)
 		set_indexed_reg(hwif, 0x13 + adj, tmp | 0x03);
 	}
 
-	speed = ide_dma_speed(drive, pdcnew_ratemask(drive));
+	speed = ide_max_dma_mode(drive);
 
 	if (!speed)
 		return 0;
diff --git a/drivers/ide/pci/pdc202xx_old.c b/drivers/ide/pci/pdc202xx_old.c
index d7a38067fb34..207a6191fac7 100644
--- a/drivers/ide/pci/pdc202xx_old.c
+++ b/drivers/ide/pci/pdc202xx_old.c
@@ -101,35 +101,12 @@ static const char *pdc_quirk_drives[] = {
 #define	MC1		0x02	/* DMA"C" timing */
 #define	MC0		0x01	/* DMA"C" timing */
 
-static u8 pdc202xx_ratemask (ide_drive_t *drive)
-{
-	u8 mode;
-
-	switch(HWIF(drive)->pci_dev->device) {
-		case PCI_DEVICE_ID_PROMISE_20267:
-		case PCI_DEVICE_ID_PROMISE_20265:
-			mode = 3;
-			break;
-		case PCI_DEVICE_ID_PROMISE_20263:
-		case PCI_DEVICE_ID_PROMISE_20262:
-			mode = 2;
-			break;
-		case PCI_DEVICE_ID_PROMISE_20246:
-			return 1;
-		default:
-			return 0;
-	}
-	if (!eighty_ninty_three(drive))
-		mode = min(mode, (u8)1);
-	return mode;
-}
-
 static int pdc202xx_tune_chipset (ide_drive_t *drive, u8 xferspeed)
 {
 	ide_hwif_t *hwif	= HWIF(drive);
 	struct pci_dev *dev	= hwif->pci_dev;
 	u8 drive_pci		= 0x60 + (drive->dn << 2);
-	u8 speed	= ide_rate_filter(pdc202xx_ratemask(drive), xferspeed);
+	u8 speed		= ide_rate_filter(drive, xferspeed);
 
 	u32			drive_conf;
 	u8			AP, BP, CP, DP;
@@ -308,7 +285,7 @@ chipset_is_set:
 	if (drive->media == ide_disk)	/* PREFETCH_EN */
 		pci_write_config_byte(dev, (drive_pci), AP|PREFETCH_EN);
 
-	speed = ide_dma_speed(drive, pdc202xx_ratemask(drive));
+	speed = ide_max_dma_mode(drive);
 
 	if (!(speed)) {
 		/* restore original pci-config space */
diff --git a/drivers/ide/pci/piix.c b/drivers/ide/pci/piix.c
index 17ea44edb4eb..84d3938a430a 100644
--- a/drivers/ide/pci/piix.c
+++ b/drivers/ide/pci/piix.c
@@ -105,68 +105,6 @@
 
 static int no_piix_dma;
 
-/**
- *	piix_ratemask		-	compute rate mask for PIIX IDE
- *	@drive: IDE drive to compute for
- *
- *	Returns the available modes for the PIIX IDE controller.
- */
- 
-static u8 piix_ratemask (ide_drive_t *drive)
-{
-	struct pci_dev *dev	= HWIF(drive)->pci_dev;
-	u8 mode;
-
-	switch(dev->device) {
-		case PCI_DEVICE_ID_INTEL_82801EB_1:
-			mode = 3;
-			break;
-		/* UDMA 100 capable */
-		case PCI_DEVICE_ID_INTEL_82801BA_8:
-		case PCI_DEVICE_ID_INTEL_82801BA_9:
-		case PCI_DEVICE_ID_INTEL_82801CA_10:
-		case PCI_DEVICE_ID_INTEL_82801CA_11:
-		case PCI_DEVICE_ID_INTEL_82801E_11:
-		case PCI_DEVICE_ID_INTEL_82801DB_1:
-		case PCI_DEVICE_ID_INTEL_82801DB_10:
-		case PCI_DEVICE_ID_INTEL_82801DB_11:
-		case PCI_DEVICE_ID_INTEL_82801EB_11:
-		case PCI_DEVICE_ID_INTEL_ESB_2:
-		case PCI_DEVICE_ID_INTEL_ICH6_19:
-		case PCI_DEVICE_ID_INTEL_ICH7_21:
-		case PCI_DEVICE_ID_INTEL_ESB2_18:
-		case PCI_DEVICE_ID_INTEL_ICH8_6:
-			mode = 3;
-			break;
-		/* UDMA 66 capable */
-		case PCI_DEVICE_ID_INTEL_82801AA_1:
-		case PCI_DEVICE_ID_INTEL_82372FB_1:
-			mode = 2;
-			break;
-		/* UDMA 33 capable */
-		case PCI_DEVICE_ID_INTEL_82371AB:
-		case PCI_DEVICE_ID_INTEL_82443MX_1:
-		case PCI_DEVICE_ID_INTEL_82451NX:
-		case PCI_DEVICE_ID_INTEL_82801AB_1:
-			return 1;
-		/* Non UDMA capable (MWDMA2) */
-		case PCI_DEVICE_ID_INTEL_82371SB_1:
-		case PCI_DEVICE_ID_INTEL_82371FB_1:
-		case PCI_DEVICE_ID_INTEL_82371FB_0:
-		case PCI_DEVICE_ID_INTEL_82371MX:
-		default:
-			return 0;
-	}
-	
-	/*
-	 *	If we are UDMA66 capable fall back to UDMA33 
-	 *	if the drive cannot see an 80pin cable.
-	 */
-	if (!eighty_ninty_three(drive))
-		mode = min_t(u8, mode, 1);
-	return mode;
-}
-
 /**
  *	piix_dma_2_pio		-	return the PIO mode matching DMA
  *	@xfer_rate: transfer speed
@@ -301,7 +239,7 @@ static int piix_tune_chipset (ide_drive_t *drive, u8 xferspeed)
 	ide_hwif_t *hwif	= HWIF(drive);
 	struct pci_dev *dev	= hwif->pci_dev;
 	u8 maslave		= hwif->channel ? 0x42 : 0x40;
-	u8 speed		= ide_rate_filter(piix_ratemask(drive), xferspeed);
+	u8 speed		= ide_rate_filter(drive, xferspeed);
 	int a_speed		= 3 << (drive->dn * 4);
 	int u_flag		= 1 << drive->dn;
 	int v_flag		= 0x01 << drive->dn;
@@ -376,7 +314,7 @@ static int piix_tune_chipset (ide_drive_t *drive, u8 xferspeed)
  
 static int piix_config_drive_for_dma (ide_drive_t *drive)
 {
-	u8 speed = ide_dma_speed(drive, piix_ratemask(drive));
+	u8 speed = ide_max_dma_mode(drive);
 
 	/*
 	 * If no DMA speed was available or the chipset has DMA bugs
diff --git a/drivers/ide/pci/scc_pata.c b/drivers/ide/pci/scc_pata.c
index f84bf791f72e..cbf936325355 100644
--- a/drivers/ide/pci/scc_pata.c
+++ b/drivers/ide/pci/scc_pata.c
@@ -189,23 +189,6 @@ scc_ide_outsl(unsigned long port, void *addr, u32 count)
 	}
 }
 
-/**
- *	scc_ratemask	-	Compute available modes
- *	@drive: IDE drive
- *
- *	Compute the available speeds for the devices on the interface.
- *	Enforce UDMA33 as a limit if there is no 80pin cable present.
- */
-
-static u8 scc_ratemask(ide_drive_t *drive)
-{
-	u8 mode = 4;
-
-	if (!eighty_ninty_three(drive))
-		mode = min(mode, (u8)1);
-	return mode;
-}
-
 /**
  *	scc_tuneproc	-	tune a drive PIO mode
  *	@drive: drive to tune
@@ -273,7 +256,7 @@ static void scc_tuneproc(ide_drive_t *drive, byte mode_wanted)
 static int scc_tune_chipset(ide_drive_t *drive, byte xferspeed)
 {
 	ide_hwif_t *hwif = HWIF(drive);
-	u8 speed = ide_rate_filter(scc_ratemask(drive), xferspeed);
+	u8 speed = ide_rate_filter(drive, xferspeed);
 	struct scc_ports *ports = ide_get_hwifdata(hwif);
 	unsigned long ctl_base = ports->ctl;
 	unsigned long cckctrl_port = ctl_base + 0xff0;
@@ -347,7 +330,7 @@ static int scc_tune_chipset(ide_drive_t *drive, byte xferspeed)
 
 static int scc_config_chipset_for_dma(ide_drive_t *drive)
 {
-	u8 speed = ide_dma_speed(drive, scc_ratemask(drive));
+	u8 speed = ide_max_dma_mode(drive);
 
 	if (!speed)
 		return 0;
diff --git a/drivers/ide/pci/serverworks.c b/drivers/ide/pci/serverworks.c
index dbcd37a0c652..2fa6d92d16cc 100644
--- a/drivers/ide/pci/serverworks.c
+++ b/drivers/ide/pci/serverworks.c
@@ -65,16 +65,16 @@ static int check_in_drive_lists (ide_drive_t *drive, const char **list)
 	return 0;
 }
 
-static u8 svwks_ratemask (ide_drive_t *drive)
+static u8 svwks_udma_filter(ide_drive_t *drive)
 {
 	struct pci_dev *dev     = HWIF(drive)->pci_dev;
-	u8 mode = 0;
+	u8 mask = 0;
 
 	if (!svwks_revision)
 		pci_read_config_byte(dev, PCI_REVISION_ID, &svwks_revision);
 
 	if (dev->device == PCI_DEVICE_ID_SERVERWORKS_HT1000IDE)
-		return 2;
+		return 0x1f;
 	if (dev->device == PCI_DEVICE_ID_SERVERWORKS_OSB4IDE) {
 		u32 reg = 0;
 		if (isa_dev)
@@ -86,25 +86,31 @@ static u8 svwks_ratemask (ide_drive_t *drive)
 		if(drive->media == ide_disk)
 			return 0;
 		/* Check the OSB4 DMA33 enable bit */
-		return ((reg & 0x00004000) == 0x00004000) ? 1 : 0;
+		return ((reg & 0x00004000) == 0x00004000) ? 0x07 : 0;
 	} else if (svwks_revision < SVWKS_CSB5_REVISION_NEW) {
-		return 1;
+		return 0x07;
 	} else if (svwks_revision >= SVWKS_CSB5_REVISION_NEW) {
-		u8 btr = 0;
+		u8 btr = 0, mode;
 		pci_read_config_byte(dev, 0x5A, &btr);
 		mode = btr & 0x3;
-		if (!eighty_ninty_three(drive))
-			mode = min(mode, (u8)1);
+
 		/* If someone decides to do UDMA133 on CSB5 the same
 		   issue will bite so be inclusive */
 		if (mode > 2 && check_in_drive_lists(drive, svwks_bad_ata100))
 			mode = 2;
+
+		switch(mode) {
+		case 2:	 mask = 0x1f; break;
+		case 1:	 mask = 0x07; break;
+		default: mask = 0x00; break;
+		}
 	}
 	if (((dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB6IDE) ||
 	     (dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2)) &&
 	    (!(PCI_FUNC(dev->devfn) & 1)))
-		mode = 2;
-	return mode;
+		mask = 0x1f;
+
+	return mask;
 }
 
 static u8 svwks_csb_check (struct pci_dev *dev)
@@ -141,7 +147,7 @@ static int svwks_tune_chipset (ide_drive_t *drive, u8 xferspeed)
 	if (xferspeed == 255)	/* PIO auto-tuning */
 		speed = XFER_PIO_0 + pio;
 	else
-		speed = ide_rate_filter(svwks_ratemask(drive), xferspeed);
+		speed = ide_rate_filter(drive, xferspeed);
 
 	/* If we are about to put a disk into UDMA mode we screwed up.
 	   Our code assumes we never _ever_ do this on an OSB4 */
@@ -304,7 +310,7 @@ static void svwks_tune_drive (ide_drive_t *drive, u8 pio)
 
 static int config_chipset_for_dma (ide_drive_t *drive)
 {
-	u8 speed = ide_dma_speed(drive, svwks_ratemask(drive));
+	u8 speed = ide_max_dma_mode(drive);
 
 	if (!(speed))
 		speed = XFER_PIO_0 + ide_get_best_pio_mode(drive, 255, 5, NULL);
@@ -500,6 +506,7 @@ static void __devinit init_hwif_svwks (ide_hwif_t *hwif)
 
 	hwif->tuneproc = &svwks_tune_drive;
 	hwif->speedproc = &svwks_tune_chipset;
+	hwif->udma_filter = &svwks_udma_filter;
 
 	hwif->atapi_dma = 1;
 
diff --git a/drivers/ide/pci/siimage.c b/drivers/ide/pci/siimage.c
index c0188de3cc66..5314ec913724 100644
--- a/drivers/ide/pci/siimage.c
+++ b/drivers/ide/pci/siimage.c
@@ -122,45 +122,41 @@ static inline unsigned long siimage_seldev(ide_drive_t *drive, int r)
 }
 
 /**
- *	siimage_ratemask	-	Compute available modes
- *	@drive: IDE drive
+ *	sil_udma_filter		-	compute UDMA mask
+ *	@drive: IDE device
+ *
+ *	Compute the available UDMA speeds for the device on the interface.
  *
- *	Compute the available speeds for the devices on the interface.
  *	For the CMD680 this depends on the clocking mode (scsc), for the
- *	SI3312 SATA controller life is a bit simpler. Enforce UDMA33
- *	as a limit if there is no 80pin cable present.
+ *	SI3112 SATA controller life is a bit simpler.
  */
- 
-static byte siimage_ratemask (ide_drive_t *drive)
+
+static u8 sil_udma_filter(ide_drive_t *drive)
 {
-	ide_hwif_t *hwif	= HWIF(drive);
-	u8 mode	= 0, scsc = 0;
+	ide_hwif_t *hwif = drive->hwif;
 	unsigned long base = (unsigned long) hwif->hwif_data;
+	u8 mask = 0, scsc = 0;
 
 	if (hwif->mmio)
 		scsc = hwif->INB(base + 0x4A);
 	else
 		pci_read_config_byte(hwif->pci_dev, 0x8A, &scsc);
 
-	if(is_sata(hwif))
-	{
-		if(strstr(drive->id->model, "Maxtor"))
-			return 3;
-		return 4;
+	if (is_sata(hwif)) {
+		mask = strstr(drive->id->model, "Maxtor") ? 0x3f : 0x7f;
+		goto out;
 	}
-	
+
 	if ((scsc & 0x30) == 0x10)	/* 133 */
-		mode = 4;
+		mask = 0x7f;
 	else if ((scsc & 0x30) == 0x20)	/* 2xPCI */
-		mode = 4;
+		mask = 0x7f;
 	else if ((scsc & 0x30) == 0x00)	/* 100 */
-		mode = 3;
+		mask = 0x3f;
 	else 	/* Disabled ? */
 		BUG();
-
-	if (!eighty_ninty_three(drive))
-		mode = min(mode, (u8)1);
-	return mode;
+out:
+	return mask;
 }
 
 /**
@@ -306,7 +302,7 @@ static int siimage_tune_chipset (ide_drive_t *drive, byte xferspeed)
 	ide_hwif_t *hwif	= HWIF(drive);
 	u16 ultra = 0, multi	= 0;
 	u8 mode = 0, unit	= drive->select.b.unit;
-	u8 speed		= ide_rate_filter(siimage_ratemask(drive), xferspeed);
+	u8 speed		= ide_rate_filter(drive, xferspeed);
 	unsigned long base	= (unsigned long)hwif->hwif_data;
 	u8 scsc = 0, addr_mask	= ((hwif->channel) ?
 				    ((hwif->mmio) ? 0xF4 : 0x84) :
@@ -389,7 +385,7 @@ static int siimage_tune_chipset (ide_drive_t *drive, byte xferspeed)
  
 static int config_chipset_for_dma (ide_drive_t *drive)
 {
-	u8 speed	= ide_dma_speed(drive, siimage_ratemask(drive));
+	u8 speed = ide_max_dma_mode(drive);
 
 	if (!speed)
 		return 0;
@@ -989,6 +985,7 @@ static void __devinit init_hwif_siimage(ide_hwif_t *hwif)
 	hwif->tuneproc	= &siimage_tuneproc;
 	hwif->reset_poll = &siimage_reset_poll;
 	hwif->pre_reset = &siimage_pre_reset;
+	hwif->udma_filter = &sil_udma_filter;
 
 	if(is_sata(hwif)) {
 		static int first = 1;
diff --git a/drivers/ide/pci/sis5513.c b/drivers/ide/pci/sis5513.c
index 6fe4ecb6c06c..83c80ed73e99 100644
--- a/drivers/ide/pci/sis5513.c
+++ b/drivers/ide/pci/sis5513.c
@@ -428,16 +428,6 @@ static int sis_get_info (char *buffer, char **addr, off_t offset, int count)
 }
 #endif /* defined(DISPLAY_SIS_TIMINGS) && defined(CONFIG_PROC_FS) */
 
-static u8 sis5513_ratemask (ide_drive_t *drive)
-{
-	u8 rates[] = { 0, 0, 1, 2, 3, 3, 4, 4 };
-	u8 mode = rates[chipset_family];
-
-	if (!eighty_ninty_three(drive))
-		mode = min(mode, (u8)1);
-	return mode;
-}
-
 /*
  * Configuration functions
  */
@@ -563,7 +553,7 @@ static int sis5513_tune_chipset (ide_drive_t *drive, u8 xferspeed)
 	u8 drive_pci, reg, speed;
 	u32 regdw;
 
-	speed = ide_rate_filter(sis5513_ratemask(drive), xferspeed);
+	speed = ide_rate_filter(drive, xferspeed);
 
 	/* See config_art_rwp_pio for drive pci config registers */
 	drive_pci = 0x40;
@@ -653,7 +643,7 @@ static void sis5513_tune_drive (ide_drive_t *drive, u8 pio)
  */
 static int config_chipset_for_dma (ide_drive_t *drive)
 {
-	u8 speed	= ide_dma_speed(drive, sis5513_ratemask(drive));
+	u8 speed = ide_max_dma_mode(drive);
 
 #ifdef DEBUG
 	printk("SIS5513: config_chipset_for_dma, drive %d, ultra %x\n",
diff --git a/drivers/ide/pci/slc90e66.c b/drivers/ide/pci/slc90e66.c
index 852ccb36da1d..9e95a5cbf984 100644
--- a/drivers/ide/pci/slc90e66.c
+++ b/drivers/ide/pci/slc90e66.c
@@ -21,15 +21,6 @@
 
 #include <asm/io.h>
 
-static u8 slc90e66_ratemask (ide_drive_t *drive)
-{
-	u8 mode	= 2;
-
-	if (!eighty_ninty_three(drive))
-		mode = min_t(u8, mode, 1);
-	return mode;
-}
-
 static u8 slc90e66_dma_2_pio (u8 xfer_rate) {
 	switch(xfer_rate) {
 		case XFER_UDMA_4:
@@ -122,7 +113,7 @@ static int slc90e66_tune_chipset (ide_drive_t *drive, u8 xferspeed)
 	ide_hwif_t *hwif	= HWIF(drive);
 	struct pci_dev *dev	= hwif->pci_dev;
 	u8 maslave		= hwif->channel ? 0x42 : 0x40;
-	u8 speed	= ide_rate_filter(slc90e66_ratemask(drive), xferspeed);
+	u8 speed		= ide_rate_filter(drive, xferspeed);
 	int sitre = 0, a_speed	= 7 << (drive->dn * 4);
 	int u_speed = 0, u_flag = 1 << drive->dn;
 	u16			reg4042, reg44, reg48, reg4a;
@@ -171,7 +162,7 @@ static int slc90e66_tune_chipset (ide_drive_t *drive, u8 xferspeed)
 
 static int slc90e66_config_drive_for_dma (ide_drive_t *drive)
 {
-	u8 speed = ide_dma_speed(drive, slc90e66_ratemask(drive));
+	u8 speed = ide_max_dma_mode(drive);
 
 	if (!speed)
 		return 0;
diff --git a/drivers/ide/pci/tc86c001.c b/drivers/ide/pci/tc86c001.c
index 0b6d81d6ce48..168f035caa3f 100644
--- a/drivers/ide/pci/tc86c001.c
+++ b/drivers/ide/pci/tc86c001.c
@@ -13,18 +13,13 @@
 #include <linux/pci.h>
 #include <linux/ide.h>
 
-static inline u8 tc86c001_ratemask(ide_drive_t *drive)
-{
-	return eighty_ninty_three(drive) ? 2 : 1;
-}
-
 static int tc86c001_tune_chipset(ide_drive_t *drive, u8 speed)
 {
 	ide_hwif_t *hwif	= HWIF(drive);
 	unsigned long scr_port	= hwif->config_data + (drive->dn ? 0x02 : 0x00);
 	u16 mode, scr		= hwif->INW(scr_port);
 
-	speed = ide_rate_filter(tc86c001_ratemask(drive), speed);
+	speed = ide_rate_filter(drive, speed);
 
 	switch (speed) {
 		case XFER_UDMA_4:	mode = 0x00c0; break;
@@ -174,7 +169,7 @@ static int tc86c001_busproc(ide_drive_t *drive, int state)
 
 static int config_chipset_for_dma(ide_drive_t *drive)
 {
-	u8 speed = ide_dma_speed(drive, tc86c001_ratemask(drive));
+	u8 speed = ide_max_dma_mode(drive);
 
 	if (!speed)
 		return 0;
diff --git a/drivers/ide/pci/triflex.c b/drivers/ide/pci/triflex.c
index 5e06179c3469..8a877235b949 100644
--- a/drivers/ide/pci/triflex.c
+++ b/drivers/ide/pci/triflex.c
@@ -48,7 +48,7 @@ static int triflex_tune_chipset(ide_drive_t *drive, u8 xferspeed)
 	u16 timing = 0;
 	u32 triflex_timings = 0;
 	u8 unit = (drive->select.b.unit & 0x01);
-	u8 speed = ide_rate_filter(0, xferspeed);
+	u8 speed = ide_rate_filter(drive, xferspeed);
 	
 	pci_read_config_dword(dev, channel_offset, &triflex_timings);
 	
@@ -102,7 +102,7 @@ static void triflex_tune_drive(ide_drive_t *drive, u8 pio)
 
 static int triflex_config_drive_for_dma(ide_drive_t *drive)
 {
-	int speed = ide_dma_speed(drive, 0); /* No ultra speeds */
+	u8 speed = ide_max_dma_mode(drive);
 
 	if (!speed)
 		return 0;
diff --git a/include/linux/ide.h b/include/linux/ide.h
index c9375c863584..23ab4dc05009 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -717,11 +717,8 @@ typedef struct hwif_s {
 	int	(*quirkproc)(ide_drive_t *);
 	/* driver soft-power interface */
 	int	(*busproc)(ide_drive_t *, int);
-//	/* host rate limiter */
-//	u8	(*ratemask)(ide_drive_t *);
-//	/* device rate limiter */
-//	u8	(*ratefilter)(ide_drive_t *, u8);
 #endif
+	u8 (*udma_filter)(ide_drive_t *);
 
 	void (*ata_input_data)(ide_drive_t *, void *, u32);
 	void (*ata_output_data)(ide_drive_t *, void *, u32);
@@ -1279,6 +1276,7 @@ int ide_in_drive_list(struct hd_driveid *, const struct drive_list_entry *);
 int __ide_dma_bad_drive(ide_drive_t *);
 int __ide_dma_good_drive(ide_drive_t *);
 int ide_use_dma(ide_drive_t *);
+u8 ide_max_dma_mode(ide_drive_t *);
 void ide_dma_off(ide_drive_t *);
 void ide_dma_verbose(ide_drive_t *);
 int ide_set_dma(ide_drive_t *);
@@ -1305,6 +1303,7 @@ extern int __ide_dma_timeout(ide_drive_t *);
 
 #else
 static inline int ide_use_dma(ide_drive_t *drive) { return 0; }
+static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
 static inline void ide_dma_off(ide_drive_t *drive) { ; }
 static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
 static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
@@ -1349,8 +1348,7 @@ static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
 }
 
 /* ide-lib.c */
-extern u8 ide_dma_speed(ide_drive_t *drive, u8 mode);
-extern u8 ide_rate_filter(u8 mode, u8 speed); 
+u8 ide_rate_filter(ide_drive_t *, u8);
 extern int ide_dma_enable(ide_drive_t *drive);
 extern char *ide_xfer_verbose(u8 xfer_rate);
 extern void ide_toggle_bounce(ide_drive_t *drive, int on);
-- 
cgit v1.2.3


From 29e744d088e3555f4efbdf390f01088dd66993b6 Mon Sep 17 00:00:00 2001
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Thu, 10 May 2007 00:01:09 +0200
Subject: ide: add ide_tune_dma() helper

After reworking the code responsible for selecting the best DMA
transfer mode it is now possible to add generic ide_tune_dma() helper.

Convert some IDE PCI host drivers to use it (the ones left need more work).

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/ide-dma.c      | 20 ++++++++++++++++++++
 drivers/ide/pci/aec62xx.c  | 13 +------------
 drivers/ide/pci/atiixp.c   | 22 +---------------------
 drivers/ide/pci/cs5535.c   | 15 +--------------
 drivers/ide/pci/hpt34x.c   | 20 +-------------------
 drivers/ide/pci/hpt366.c   | 20 +-------------------
 drivers/ide/pci/it8213.c   | 21 +--------------------
 drivers/ide/pci/jmicron.c  | 21 +--------------------
 drivers/ide/pci/piix.c     | 26 +-------------------------
 drivers/ide/pci/sis5513.c  | 21 +--------------------
 drivers/ide/pci/slc90e66.c | 13 +------------
 drivers/ide/pci/tc86c001.c | 13 +------------
 drivers/ide/pci/triflex.c  | 13 +------------
 include/linux/ide.h        |  2 ++
 14 files changed, 34 insertions(+), 206 deletions(-)

(limited to 'drivers/ide/pci')

diff --git a/drivers/ide/ide-dma.c b/drivers/ide/ide-dma.c
index f28fabb791fe..5fe85191d49c 100644
--- a/drivers/ide/ide-dma.c
+++ b/drivers/ide/ide-dma.c
@@ -779,6 +779,26 @@ u8 ide_max_dma_mode(ide_drive_t *drive)
 
 EXPORT_SYMBOL_GPL(ide_max_dma_mode);
 
+int ide_tune_dma(ide_drive_t *drive)
+{
+	u8 speed;
+
+	/* TODO: use only ide_max_dma_mode() */
+	if (!ide_use_dma(drive))
+		return 0;
+
+	speed = ide_max_dma_mode(drive);
+
+	if (!speed)
+		return 0;
+
+	drive->hwif->speedproc(drive, speed);
+
+	return ide_dma_enable(drive);
+}
+
+EXPORT_SYMBOL_GPL(ide_tune_dma);
+
 void ide_dma_verbose(ide_drive_t *drive)
 {
 	struct hd_driveid *id	= drive->id;
diff --git a/drivers/ide/pci/aec62xx.c b/drivers/ide/pci/aec62xx.c
index 099539e8c7a3..b173bc66ce1e 100644
--- a/drivers/ide/pci/aec62xx.c
+++ b/drivers/ide/pci/aec62xx.c
@@ -155,17 +155,6 @@ static int aec62xx_tune_chipset (ide_drive_t *drive, u8 speed)
 	}
 }
 
-static int config_chipset_for_dma (ide_drive_t *drive)
-{
-	u8 speed = ide_max_dma_mode(drive);
-
-	if (!(speed))
-		return 0;
-
-	(void) aec62xx_tune_chipset(drive, speed);
-	return ide_dma_enable(drive);
-}
-
 static void aec62xx_tune_drive (ide_drive_t *drive, u8 pio)
 {
 	pio = ide_get_best_pio_mode(drive, pio, 4, NULL);
@@ -174,7 +163,7 @@ static void aec62xx_tune_drive (ide_drive_t *drive, u8 pio)
 
 static int aec62xx_config_drive_xfer_rate (ide_drive_t *drive)
 {
-	if (ide_use_dma(drive) && config_chipset_for_dma(drive))
+	if (ide_tune_dma(drive))
 		return 0;
 
 	if (ide_use_fast_pio(drive))
diff --git a/drivers/ide/pci/atiixp.c b/drivers/ide/pci/atiixp.c
index f7e80d6076d7..0e52ad722a72 100644
--- a/drivers/ide/pci/atiixp.c
+++ b/drivers/ide/pci/atiixp.c
@@ -206,26 +206,6 @@ static int atiixp_speedproc(ide_drive_t *drive, u8 xferspeed)
 	return ide_config_drive_speed(drive, speed);
 }
 
-/**
- *	atiixp_config_drive_for_dma	-	configure drive for DMA
- *	@drive: IDE drive to configure
- *
- *	Set up a ATIIXP interface channel for the best available speed.
- *	We prefer UDMA if it is available and then MWDMA. If DMA is
- *	not available we switch to PIO and return 0.
- */
-
-static int atiixp_config_drive_for_dma(ide_drive_t *drive)
-{
-	u8 speed = ide_max_dma_mode(drive);
-
-	if (!speed)
-		return 0;
-
-	(void) atiixp_speedproc(drive, speed);
-	return ide_dma_enable(drive);
-}
-
 /**
  *	atiixp_dma_check	-	set up an IDE device
  *	@drive: IDE drive to configure
@@ -240,7 +220,7 @@ static int atiixp_dma_check(ide_drive_t *drive)
 
 	drive->init_speed = 0;
 
-	if (ide_use_dma(drive) && atiixp_config_drive_for_dma(drive))
+	if (ide_tune_dma(drive))
 		return 0;
 
 	if (ide_use_fast_pio(drive)) {
diff --git a/drivers/ide/pci/cs5535.c b/drivers/ide/pci/cs5535.c
index 66a101e470d0..41925c47ef05 100644
--- a/drivers/ide/pci/cs5535.c
+++ b/drivers/ide/pci/cs5535.c
@@ -164,26 +164,13 @@ static void cs5535_tuneproc(ide_drive_t *drive, u8 xferspeed)
 	cs5535_set_speed(drive, xferspeed);
 }
 
-static int cs5535_config_drive_for_dma(ide_drive_t *drive)
-{
-	u8 speed = ide_max_dma_mode(drive);
-
-	/* If no DMA speed was available then let dma_check hit pio */
-	if (!speed) {
-		return 0;
-	}
-
-	cs5535_set_drive(drive, speed);
-	return ide_dma_enable(drive);
-}
-
 static int cs5535_dma_check(ide_drive_t *drive)
 {
 	u8 speed;
 
 	drive->init_speed = 0;
 
-	if (ide_use_dma(drive) && cs5535_config_drive_for_dma(drive))
+	if (ide_tune_dma(drive))
 		return 0;
 
 	if (ide_use_fast_pio(drive)) {
diff --git a/drivers/ide/pci/hpt34x.c b/drivers/ide/pci/hpt34x.c
index 473e1b33dbf7..2c24c3de8846 100644
--- a/drivers/ide/pci/hpt34x.c
+++ b/drivers/ide/pci/hpt34x.c
@@ -84,29 +84,11 @@ static void hpt34x_tune_drive (ide_drive_t *drive, u8 pio)
 	(void) hpt34x_tune_chipset(drive, (XFER_PIO_0 + pio));
 }
 
-/*
- * This allows the configuration of ide_pci chipset registers
- * for cards that learn about the drive's UDMA, DMA, PIO capabilities
- * after the drive is reported by the OS.  Initially for designed for
- * HPT343 UDMA chipset by HighPoint|Triones Technologies, Inc.
- */
-
-static int config_chipset_for_dma (ide_drive_t *drive)
-{
-	u8 speed = ide_max_dma_mode(drive);
-
-	if (!(speed))
-		return 0;
-
-	(void) hpt34x_tune_chipset(drive, speed);
-	return ide_dma_enable(drive);
-}
-
 static int hpt34x_config_drive_xfer_rate (ide_drive_t *drive)
 {
 	drive->init_speed = 0;
 
-	if (ide_use_dma(drive) && config_chipset_for_dma(drive))
+	if (ide_tune_dma(drive))
 #ifndef CONFIG_HPT34X_AUTODMA
 		return -1;
 #else
diff --git a/drivers/ide/pci/hpt366.c b/drivers/ide/pci/hpt366.c
index de5ad9c35dc6..fcbc5605b38e 100644
--- a/drivers/ide/pci/hpt366.c
+++ b/drivers/ide/pci/hpt366.c
@@ -669,24 +669,6 @@ static void hpt3xx_tune_drive(ide_drive_t *drive, u8 pio)
 	(void) hpt3xx_tune_chipset (drive, XFER_PIO_0 + pio);
 }
 
-/*
- * This allows the configuration of ide_pci chipset registers
- * for cards that learn about the drive's UDMA, DMA, PIO capabilities
- * after the drive is reported by the OS.  Initially designed for
- * HPT366 UDMA chipset by HighPoint|Triones Technologies, Inc.
- *
- */
-static int config_chipset_for_dma(ide_drive_t *drive)
-{
-	u8 speed = ide_max_dma_mode(drive);
-
-	if (!speed)
-		return 0;
-
-	(void) hpt3xx_tune_chipset(drive, speed);
-	return ide_dma_enable(drive);
-}
-
 static int hpt3xx_quirkproc(ide_drive_t *drive)
 {
 	struct hd_driveid *id	= drive->id;
@@ -741,7 +723,7 @@ static int hpt366_config_drive_xfer_rate(ide_drive_t *drive)
 {
 	drive->init_speed = 0;
 
-	if (ide_use_dma(drive) && config_chipset_for_dma(drive))
+	if (ide_tune_dma(drive))
 		return 0;
 
 	if (ide_use_fast_pio(drive))
diff --git a/drivers/ide/pci/it8213.c b/drivers/ide/pci/it8213.c
index 02b56cb7bb1b..c04a02687b95 100644
--- a/drivers/ide/pci/it8213.c
+++ b/drivers/ide/pci/it8213.c
@@ -197,25 +197,6 @@ static int it8213_tune_chipset (ide_drive_t *drive, u8 xferspeed)
 	return ide_config_drive_speed(drive, speed);
 }
 
-/*
- *	config_chipset_for_dma	-	configure for DMA
- *	@drive: drive to configure
- *
- *	Called by the IDE layer when it wants the timings set up.
- */
-
-static int config_chipset_for_dma (ide_drive_t *drive)
-{
-	u8 speed = ide_max_dma_mode(drive);
-
-	if (!speed)
-		return 0;
-
-	it8213_tune_chipset(drive, speed);
-
-	return ide_dma_enable(drive);
-}
-
 /**
  *	it8213_configure_drive_for_dma	-	set up for DMA transfers
  *	@drive: drive we are going to set up
@@ -230,7 +211,7 @@ static int it8213_config_drive_for_dma (ide_drive_t *drive)
 {
 	u8 pio;
 
-	if (ide_use_dma(drive) && config_chipset_for_dma(drive))
+	if (ide_tune_dma(drive))
 		return 0;
 
 	pio = ide_get_best_pio_mode(drive, 255, 4, NULL);
diff --git a/drivers/ide/pci/jmicron.c b/drivers/ide/pci/jmicron.c
index dbb3c199cba9..76ed25147229 100644
--- a/drivers/ide/pci/jmicron.c
+++ b/drivers/ide/pci/jmicron.c
@@ -118,25 +118,6 @@ static int jmicron_tune_chipset (ide_drive_t *drive, byte xferspeed)
 	return ide_config_drive_speed(drive, speed);
 }
 
-/**
- *	config_chipset_for_dma	-	configure for DMA
- *	@drive: drive to configure
- *
- *	As the JMicron snoops for timings all we actually need to do is
- *	make sure we don't set an invalid mode.
- */
-
-static int config_chipset_for_dma (ide_drive_t *drive)
-{
-	u8 speed = ide_max_dma_mode(drive);
-
-	if (!speed)
-		return 0;
-
-	jmicron_tune_chipset(drive, speed);
-	return ide_dma_enable(drive);
-}
-
 /**
  *	jmicron_configure_drive_for_dma	-	set up for DMA transfers
  *	@drive: drive we are going to set up
@@ -147,7 +128,7 @@ static int config_chipset_for_dma (ide_drive_t *drive)
 
 static int jmicron_config_drive_for_dma (ide_drive_t *drive)
 {
-	if (ide_use_dma(drive) && config_chipset_for_dma(drive))
+	if (ide_tune_dma(drive))
 		return 0;
 
 	config_jmicron_chipset_for_pio(drive, 1);
diff --git a/drivers/ide/pci/piix.c b/drivers/ide/pci/piix.c
index 84d3938a430a..8b219dd63024 100644
--- a/drivers/ide/pci/piix.c
+++ b/drivers/ide/pci/piix.c
@@ -303,30 +303,6 @@ static int piix_tune_chipset (ide_drive_t *drive, u8 xferspeed)
 	return ide_config_drive_speed(drive, speed);
 }
 
-/**
- *	piix_config_drive_for_dma	-	configure drive for DMA
- *	@drive: IDE drive to configure
- *
- *	Set up a PIIX interface channel for the best available speed.
- *	We prefer UDMA if it is available and then MWDMA.  If DMA is
- *	not available we switch to PIO and return 0.
- */
- 
-static int piix_config_drive_for_dma (ide_drive_t *drive)
-{
-	u8 speed = ide_max_dma_mode(drive);
-
-	/*
-	 * If no DMA speed was available or the chipset has DMA bugs
-	 * then disable DMA and use PIO
-	 */
-	if (!speed)
-		return 0;
-
-	(void) piix_tune_chipset(drive, speed);
-	return ide_dma_enable(drive);
-}
-
 /**
  *	piix_config_drive_xfer_rate	-	set up an IDE device
  *	@drive: IDE drive to configure
@@ -339,7 +315,7 @@ static int piix_config_drive_xfer_rate (ide_drive_t *drive)
 {
 	drive->init_speed = 0;
 
-	if (ide_use_dma(drive) && piix_config_drive_for_dma(drive))
+	if (ide_tune_dma(drive))
 		return 0;
 
 	if (ide_use_fast_pio(drive))
diff --git a/drivers/ide/pci/sis5513.c b/drivers/ide/pci/sis5513.c
index 83c80ed73e99..41953fe4fa6b 100644
--- a/drivers/ide/pci/sis5513.c
+++ b/drivers/ide/pci/sis5513.c
@@ -638,32 +638,13 @@ static void sis5513_tune_drive (ide_drive_t *drive, u8 pio)
 	(void) config_chipset_for_pio(drive, pio);
 }
 
-/*
- * ((id->hw_config & 0x4000|0x2000) && (HWIF(drive)->udma_four))
- */
-static int config_chipset_for_dma (ide_drive_t *drive)
-{
-	u8 speed = ide_max_dma_mode(drive);
-
-#ifdef DEBUG
-	printk("SIS5513: config_chipset_for_dma, drive %d, ultra %x\n",
-	       drive->dn, drive->id->dma_ultra);
-#endif
-
-	if (!(speed))
-		return 0;
-
-	sis5513_tune_chipset(drive, speed);
-	return ide_dma_enable(drive);
-}
-
 static int sis5513_config_xfer_rate(ide_drive_t *drive)
 {
 	config_art_rwp_pio(drive, 5);
 
 	drive->init_speed = 0;
 
-	if (ide_use_dma(drive) && config_chipset_for_dma(drive))
+	if (ide_tune_dma(drive))
 		return 0;
 
 	if (ide_use_fast_pio(drive))
diff --git a/drivers/ide/pci/slc90e66.c b/drivers/ide/pci/slc90e66.c
index 9e95a5cbf984..c40f291f91e0 100644
--- a/drivers/ide/pci/slc90e66.c
+++ b/drivers/ide/pci/slc90e66.c
@@ -160,22 +160,11 @@ static int slc90e66_tune_chipset (ide_drive_t *drive, u8 xferspeed)
 	return ide_config_drive_speed(drive, speed);
 }
 
-static int slc90e66_config_drive_for_dma (ide_drive_t *drive)
-{
-	u8 speed = ide_max_dma_mode(drive);
-
-	if (!speed)
-		return 0;
-
-	(void) slc90e66_tune_chipset(drive, speed);
-	return ide_dma_enable(drive);
-}
-
 static int slc90e66_config_drive_xfer_rate (ide_drive_t *drive)
 {
 	drive->init_speed = 0;
 
-	if (ide_use_dma(drive) && slc90e66_config_drive_for_dma(drive))
+	if (ide_tune_dma(drive))
 		return 0;
 
 	if (ide_use_fast_pio(drive))
diff --git a/drivers/ide/pci/tc86c001.c b/drivers/ide/pci/tc86c001.c
index 168f035caa3f..cee619bb2eaf 100644
--- a/drivers/ide/pci/tc86c001.c
+++ b/drivers/ide/pci/tc86c001.c
@@ -167,20 +167,9 @@ static int tc86c001_busproc(ide_drive_t *drive, int state)
 	return 0;
 }
 
-static int config_chipset_for_dma(ide_drive_t *drive)
-{
-	u8 speed = ide_max_dma_mode(drive);
-
-	if (!speed)
-		return 0;
-
-	(void) tc86c001_tune_chipset(drive, speed);
-	return ide_dma_enable(drive);
-}
-
 static int tc86c001_config_drive_xfer_rate(ide_drive_t *drive)
 {
-	if (ide_use_dma(drive) && config_chipset_for_dma(drive))
+	if (ide_tune_dma(drive))
 		return 0;
 
 	if (ide_use_fast_pio(drive))
diff --git a/drivers/ide/pci/triflex.c b/drivers/ide/pci/triflex.c
index 8a877235b949..35e8c612638f 100644
--- a/drivers/ide/pci/triflex.c
+++ b/drivers/ide/pci/triflex.c
@@ -100,20 +100,9 @@ static void triflex_tune_drive(ide_drive_t *drive, u8 pio)
 	(void) triflex_tune_chipset(drive, (XFER_PIO_0 + use_pio));
 }
 
-static int triflex_config_drive_for_dma(ide_drive_t *drive)
-{
-	u8 speed = ide_max_dma_mode(drive);
-
-	if (!speed)
-		return 0;
-
-	(void) triflex_tune_chipset(drive, speed);
-	 return ide_dma_enable(drive);
-}
-
 static int triflex_config_drive_xfer_rate(ide_drive_t *drive)
 {
-	if (ide_use_dma(drive) && triflex_config_drive_for_dma(drive))
+	if (ide_tune_dma(drive))
 		return 0;
 
 	triflex_tune_drive(drive, 255);
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 23ab4dc05009..d03fa2d5d75a 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1277,6 +1277,7 @@ int __ide_dma_bad_drive(ide_drive_t *);
 int __ide_dma_good_drive(ide_drive_t *);
 int ide_use_dma(ide_drive_t *);
 u8 ide_max_dma_mode(ide_drive_t *);
+int ide_tune_dma(ide_drive_t *);
 void ide_dma_off(ide_drive_t *);
 void ide_dma_verbose(ide_drive_t *);
 int ide_set_dma(ide_drive_t *);
@@ -1304,6 +1305,7 @@ extern int __ide_dma_timeout(ide_drive_t *);
 #else
 static inline int ide_use_dma(ide_drive_t *drive) { return 0; }
 static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
+static inline int ide_tune_dma(ide_drive_t *drive) { return 0; }
 static inline void ide_dma_off(ide_drive_t *drive) { ; }
 static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
 static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
-- 
cgit v1.2.3


From ecfd80e4a514123070b4cfb674b817ba75055df2 Mon Sep 17 00:00:00 2001
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Thu, 10 May 2007 00:01:09 +0200
Subject: ide: make /proc/ide/ optional

All important information/features should be already available through
sysfs and ioctl interfaces.

Add CONFIG_IDE_PROC_FS (CONFIG_SCSI_PROC_FS rip-off) config option,
disabling it makes IDE driver ~5 kB smaller (on x86-32).

While at it add CONFIG_PROC_FS=n versions of proc_ide_{create,destroy}()
and remove no longer needed #ifdefs.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/Kconfig        | 11 +++++++++++
 drivers/ide/Makefile       |  2 +-
 drivers/ide/ide-cd.c       |  4 ++--
 drivers/ide/ide-disk.c     |  4 ++--
 drivers/ide/ide-floppy.c   |  4 ++--
 drivers/ide/ide-tape.c     |  2 +-
 drivers/ide/ide.c          | 15 ++++++---------
 drivers/ide/pci/alim15x3.c |  8 ++++----
 drivers/ide/pci/amd74xx.c  |  6 +++---
 drivers/ide/pci/cmd64x.c   |  8 ++++----
 drivers/ide/pci/sis5513.c  |  6 +++---
 drivers/scsi/ide-scsi.c    |  2 +-
 include/linux/ide.h        | 14 ++++++++------
 13 files changed, 48 insertions(+), 38 deletions(-)

(limited to 'drivers/ide/pci')

diff --git a/drivers/ide/Kconfig b/drivers/ide/Kconfig
index 5bdf64b77913..a678bbecb489 100644
--- a/drivers/ide/Kconfig
+++ b/drivers/ide/Kconfig
@@ -291,6 +291,17 @@ config IDE_TASK_IOCTL
 
 	  If you are unsure, say N here.
 
+config IDE_PROC_FS
+	bool "legacy /proc/ide/ support"
+	depends on IDE && PROC_FS
+	default y
+	help
+	  This option enables support for the various files in
+	  /proc/ide.  In Linux 2.6 this has been superseded by
+	  files in sysfs but many legacy applications rely on this.
+
+	  If unsure say Y.
+
 comment "IDE chipset support/bugfixes"
 
 config IDE_GENERIC
diff --git a/drivers/ide/Makefile b/drivers/ide/Makefile
index d9f029e8ff74..75dc6969e0a7 100644
--- a/drivers/ide/Makefile
+++ b/drivers/ide/Makefile
@@ -20,7 +20,7 @@ ide-core-$(CONFIG_BLK_DEV_CMD640)	+= pci/cmd640.o
 # Core IDE code - must come before legacy
 ide-core-$(CONFIG_BLK_DEV_IDEPCI)	+= setup-pci.o
 ide-core-$(CONFIG_BLK_DEV_IDEDMA)	+= ide-dma.o
-ide-core-$(CONFIG_PROC_FS)		+= ide-proc.o
+ide-core-$(CONFIG_IDE_PROC_FS)		+= ide-proc.o
 ide-core-$(CONFIG_BLK_DEV_IDEPNP)	+= ide-pnp.o
 ide-core-$(CONFIG_BLK_DEV_IDEACPI)	+= ide-acpi.o
 
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index 638becda81c6..c3a0079789fd 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -3274,7 +3274,7 @@ int ide_cdrom_setup (ide_drive_t *drive)
 	return 0;
 }
 
-#ifdef CONFIG_PROC_FS
+#ifdef CONFIG_IDE_PROC_FS
 static
 sector_t ide_cdrom_capacity (ide_drive_t *drive)
 {
@@ -3321,7 +3321,7 @@ static void ide_cd_release(struct kref *kref)
 
 static int ide_cd_probe(ide_drive_t *);
 
-#ifdef CONFIG_PROC_FS
+#ifdef CONFIG_IDE_PROC_FS
 static int proc_idecd_read_capacity
 	(char *page, char **start, off_t off, int count, int *eof, void *data)
 {
diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 37aa6ddd9702..e7bc4d35c40c 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -559,7 +559,7 @@ static sector_t idedisk_capacity (ide_drive_t *drive)
 	return drive->capacity64 - drive->sect0;
 }
 
-#ifdef CONFIG_PROC_FS
+#ifdef CONFIG_IDE_PROC_FS
 
 static int smart_enable(ide_drive_t *drive)
 {
@@ -683,7 +683,7 @@ static ide_proc_entry_t idedisk_proc[] = {
 
 #define	idedisk_proc	NULL
 
-#endif	/* CONFIG_PROC_FS */
+#endif	/* CONFIG_IDE_PROC_FS */
 
 static void idedisk_prepare_flush(request_queue_t *q, struct request *rq)
 {
diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
index 57cd21c5b2c1..84d398f71e0f 100644
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -1892,7 +1892,7 @@ static void ide_floppy_release(struct kref *kref)
 	kfree(floppy);
 }
 
-#ifdef CONFIG_PROC_FS
+#ifdef CONFIG_IDE_PROC_FS
 
 static int proc_idefloppy_read_capacity
 	(char *page, char **start, off_t off, int count, int *eof, void *data)
@@ -1914,7 +1914,7 @@ static ide_proc_entry_t idefloppy_proc[] = {
 
 #define	idefloppy_proc	NULL
 
-#endif	/* CONFIG_PROC_FS */
+#endif	/* CONFIG_IDE_PROC_FS */
 
 static int ide_floppy_probe(ide_drive_t *);
 
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index 4e59239fef75..ad306ae24e24 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -4730,7 +4730,7 @@ static void ide_tape_release(struct kref *kref)
 	kfree(tape);
 }
 
-#ifdef CONFIG_PROC_FS
+#ifdef CONFIG_IDE_PROC_FS
 
 static int proc_idetape_read_name
 	(char *page, char **start, off_t off, int count, int *eof, void *data)
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index 73f752142f9e..7a96f6f07494 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -350,7 +350,7 @@ static int ide_system_bus_speed(void)
 	return system_bus_speed;
 }
 
-#ifdef CONFIG_PROC_FS
+#ifdef CONFIG_IDE_PROC_FS
 struct proc_dir_entry *proc_ide_root;
 #endif
 
@@ -1892,7 +1892,7 @@ static void __init probe_for_hwifs (void)
 
 void ide_register_subdriver(ide_drive_t *drive, ide_driver_t *driver)
 {
-#ifdef CONFIG_PROC_FS
+#ifdef CONFIG_IDE_PROC_FS
 	ide_add_proc_entries(drive->proc, driver->proc, drive);
 #endif
 }
@@ -1914,8 +1914,8 @@ EXPORT_SYMBOL(ide_register_subdriver);
 void ide_unregister_subdriver(ide_drive_t *drive, ide_driver_t *driver)
 {
 	unsigned long flags;
-	
-#ifdef CONFIG_PROC_FS
+
+#ifdef CONFIG_IDE_PROC_FS
 	ide_remove_proc_entries(drive->proc, driver->proc);
 #endif
 	down(&ide_setting_sem);
@@ -2069,7 +2069,7 @@ static int __init ide_init(void)
 
 	init_ide_data();
 
-#ifdef CONFIG_PROC_FS
+#ifdef CONFIG_IDE_PROC_FS
 	proc_ide_root = proc_mkdir("ide", NULL);
 #endif
 
@@ -2099,9 +2099,8 @@ static int __init ide_init(void)
 	probe_for_hwifs();
 	initializing = 0;
 
-#ifdef CONFIG_PROC_FS
 	proc_ide_create();
-#endif
+
 	return 0;
 }
 
@@ -2141,9 +2140,7 @@ void __exit cleanup_module (void)
 	pnpide_exit();
 #endif
 
-#ifdef CONFIG_PROC_FS
 	proc_ide_destroy();
-#endif
 
 	bus_unregister(&ide_bus_type);
 }
diff --git a/drivers/ide/pci/alim15x3.c b/drivers/ide/pci/alim15x3.c
index 76643b626bdd..428efdae0c7b 100644
--- a/drivers/ide/pci/alim15x3.c
+++ b/drivers/ide/pci/alim15x3.c
@@ -50,7 +50,7 @@ static u8 m5229_revision;
 static u8 chip_is_1543c_e;
 static struct pci_dev *isa_dev;
 
-#if defined(DISPLAY_ALI_TIMINGS) && defined(CONFIG_PROC_FS)
+#if defined(DISPLAY_ALI_TIMINGS) && defined(CONFIG_IDE_PROC_FS)
 #include <linux/stat.h>
 #include <linux/proc_fs.h>
 
@@ -278,7 +278,7 @@ static int ali_get_info (char *buffer, char **addr, off_t offset, int count)
 
 	return p-buffer; /* => must be less than 4k! */
 }
-#endif  /* defined(DISPLAY_ALI_TIMINGS) && defined(CONFIG_PROC_FS) */
+#endif  /* defined(DISPLAY_ALI_TIMINGS) && defined(CONFIG_IDE_PROC_FS) */
 
 /**
  *	ali15x3_tune_pio	-	set up chipset for PIO mode
@@ -566,13 +566,13 @@ static unsigned int __devinit init_chipset_ali15x3 (struct pci_dev *dev, const c
 
 	isa_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, NULL);
 
-#if defined(DISPLAY_ALI_TIMINGS) && defined(CONFIG_PROC_FS)
+#if defined(DISPLAY_ALI_TIMINGS) && defined(CONFIG_IDE_PROC_FS)
 	if (!ali_proc) {
 		ali_proc = 1;
 		bmide_dev = dev;
 		ide_pci_create_host_proc("ali", ali_get_info);
 	}
-#endif  /* defined(DISPLAY_ALI_TIMINGS) && defined(CONFIG_PROC_FS) */
+#endif  /* defined(DISPLAY_ALI_TIMINGS) && defined(CONFIG_IDE_PROC_FS) */
 
 	local_irq_save(flags);
 
diff --git a/drivers/ide/pci/amd74xx.c b/drivers/ide/pci/amd74xx.c
index 7989bdd842a2..becb1a5648b0 100644
--- a/drivers/ide/pci/amd74xx.c
+++ b/drivers/ide/pci/amd74xx.c
@@ -92,7 +92,7 @@ static unsigned char amd_cyc2udma[] = { 6, 6, 5, 4, 0, 1, 1, 2, 2, 3, 3, 3, 3, 3
  * AMD /proc entry.
  */
 
-#ifdef CONFIG_PROC_FS
+#ifdef CONFIG_IDE_PROC_FS
 
 #include <linux/stat.h>
 #include <linux/proc_fs.h>
@@ -402,14 +402,14 @@ static unsigned int __devinit init_chipset_amd74xx(struct pci_dev *dev, const ch
  * Register /proc/ide/amd74xx entry
  */
 
-#if defined(DISPLAY_AMD_TIMINGS) && defined(CONFIG_PROC_FS)
+#if defined(DISPLAY_AMD_TIMINGS) && defined(CONFIG_IDE_PROC_FS)
         if (!amd74xx_proc) {
                 amd_base = pci_resource_start(dev, 4);
                 bmide_dev = dev;
 		ide_pci_create_host_proc("amd74xx", amd74xx_get_info);
                 amd74xx_proc = 1;
         }
-#endif /* DISPLAY_AMD_TIMINGS && CONFIG_PROC_FS */
+#endif /* DISPLAY_AMD_TIMINGS && CONFIG_IDE_PROC_FS */
 
 	return dev->irq;
 }
diff --git a/drivers/ide/pci/cmd64x.c b/drivers/ide/pci/cmd64x.c
index 19f5ac1f866c..61ea96b5555c 100644
--- a/drivers/ide/pci/cmd64x.c
+++ b/drivers/ide/pci/cmd64x.c
@@ -74,7 +74,7 @@
 #define UDIDETCR1	0x7B
 #define DTPR1		0x7C
 
-#if defined(DISPLAY_CMD64X_TIMINGS) && defined(CONFIG_PROC_FS)
+#if defined(DISPLAY_CMD64X_TIMINGS) && defined(CONFIG_IDE_PROC_FS)
 #include <linux/stat.h>
 #include <linux/proc_fs.h>
 
@@ -165,7 +165,7 @@ static int cmd64x_get_info (char *buffer, char **addr, off_t offset, int count)
 	return p-buffer;	/* => must be less than 4k! */
 }
 
-#endif	/* defined(DISPLAY_CMD64X_TIMINGS) && defined(CONFIG_PROC_FS) */
+#endif	/* defined(DISPLAY_CMD64X_TIMINGS) && defined(CONFIG_IDE_PROC_FS) */
 
 static u8 quantize_timing(int timing, int quant)
 {
@@ -548,7 +548,7 @@ static unsigned int __devinit init_chipset_cmd64x(struct pci_dev *dev, const cha
 	(void) pci_write_config_byte(dev, UDIDETCR0, 0xf0);
 #endif /* CONFIG_PPC */
 
-#if defined(DISPLAY_CMD64X_TIMINGS) && defined(CONFIG_PROC_FS)
+#if defined(DISPLAY_CMD64X_TIMINGS) && defined(CONFIG_IDE_PROC_FS)
 
 	cmd_devs[n_cmd_devs++] = dev;
 
@@ -556,7 +556,7 @@ static unsigned int __devinit init_chipset_cmd64x(struct pci_dev *dev, const cha
 		cmd64x_proc = 1;
 		ide_pci_create_host_proc("cmd64x", cmd64x_get_info);
 	}
-#endif /* DISPLAY_CMD64X_TIMINGS && CONFIG_PROC_FS */
+#endif /* DISPLAY_CMD64X_TIMINGS && CONFIG_IDE_PROC_FS */
 
 	return 0;
 }
diff --git a/drivers/ide/pci/sis5513.c b/drivers/ide/pci/sis5513.c
index 41953fe4fa6b..2bde1b92784a 100644
--- a/drivers/ide/pci/sis5513.c
+++ b/drivers/ide/pci/sis5513.c
@@ -191,7 +191,7 @@ static char* chipset_capability[] = {
 	"ATA 133 (1st gen)", "ATA 133 (2nd gen)"
 };
 
-#if defined(DISPLAY_SIS_TIMINGS) && defined(CONFIG_PROC_FS)
+#if defined(DISPLAY_SIS_TIMINGS) && defined(CONFIG_IDE_PROC_FS)
 #include <linux/stat.h>
 #include <linux/proc_fs.h>
 
@@ -426,7 +426,7 @@ static int sis_get_info (char *buffer, char **addr, off_t offset, int count)
 
 	return len > count ? count : len;
 }
-#endif /* defined(DISPLAY_SIS_TIMINGS) && defined(CONFIG_PROC_FS) */
+#endif /* defined(DISPLAY_SIS_TIMINGS) && defined(CONFIG_IDE_PROC_FS) */
 
 /*
  * Configuration functions
@@ -797,7 +797,7 @@ static unsigned int __devinit init_chipset_sis5513 (struct pci_dev *dev, const c
 				break;
 		}
 
-#if defined(DISPLAY_SIS_TIMINGS) && defined(CONFIG_PROC_FS)
+#if defined(DISPLAY_SIS_TIMINGS) && defined(CONFIG_IDE_PROC_FS)
 		if (!sis_proc) {
 			sis_proc = 1;
 			bmide_dev = dev;
diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c
index 2b5b8a93bc10..531df3a29c47 100644
--- a/drivers/scsi/ide-scsi.c
+++ b/drivers/scsi/ide-scsi.c
@@ -770,7 +770,7 @@ static void ide_scsi_remove(ide_drive_t *drive)
 
 static int ide_scsi_probe(ide_drive_t *);
 
-#ifdef CONFIG_PROC_FS
+#ifdef CONFIG_IDE_PROC_FS
 static ide_proc_entry_t idescsi_proc[] = {
 	{ "capacity", S_IFREG|S_IRUGO, proc_ide_read_capacity, NULL },
 	{ NULL, 0, NULL, NULL }
diff --git a/include/linux/ide.h b/include/linux/ide.h
index d03fa2d5d75a..697c39dd66a1 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -912,15 +912,15 @@ typedef struct {
 	write_proc_t	*write_proc;
 } ide_proc_entry_t;
 
-#ifdef CONFIG_PROC_FS
+#ifdef CONFIG_IDE_PROC_FS
 extern struct proc_dir_entry *proc_ide_root;
 
-extern void proc_ide_create(void);
-extern void proc_ide_destroy(void);
-extern void create_proc_ide_interfaces(void);
+void proc_ide_create(void);
+void proc_ide_destroy(void);
+void create_proc_ide_interfaces(void);
 void destroy_proc_ide_interface(ide_hwif_t *);
-extern void ide_add_proc_entries(struct proc_dir_entry *, ide_proc_entry_t *, void *);
-extern void ide_remove_proc_entries(struct proc_dir_entry *, ide_proc_entry_t *);
+void ide_add_proc_entries(struct proc_dir_entry *, ide_proc_entry_t *, void *);
+void ide_remove_proc_entries(struct proc_dir_entry *, ide_proc_entry_t *);
 read_proc_t proc_ide_read_capacity;
 read_proc_t proc_ide_read_geometry;
 
@@ -944,6 +944,8 @@ void ide_pci_create_host_proc(const char *, get_info_t *);
 	return len;			\
 }
 #else
+static inline void proc_ide_create(void) { ; }
+static inline void proc_ide_destroy(void) { ; }
 static inline void create_proc_ide_interfaces(void) { ; }
 static inline void destroy_proc_ide_interface(ide_hwif_t *hwif) { ; }
 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
-- 
cgit v1.2.3


From 7f8f48af0861c38c28d4abd550102643e0ea9e6a Mon Sep 17 00:00:00 2001
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Thu, 10 May 2007 00:01:10 +0200
Subject: ide: cable detection fixes (take 2)

Tejun's recent eighty_ninty_three() fix has inspired me to do more thorough
review of the cable detection code...

* print user-friendly warning about limiting the maximum transfer speed
  to UDMA33 (and the reason behind it) when 80-wire cable is not detected,
  also while at it cleanup eighty_ninty_three() a bit

* use eighty_ninty_three() in ide_ata66_check(), this actually fixes 3 bugs:
  - bit 14 (word 93 validity check) == 1 && bit 13 (80-wire cable test) == 1
    were used as 80-wire cable present test for CONFIG_IDEDMA_IVB=n case
    (please see FIXME comment in eighty_ninty_three() for more details)
  - CONFIG_IDEDMA_IVB=y/n cases were interchanged
  - check for SATA devices was missing

* remove private cable warnings from pdc_202xx{old,new} drivers now that core
  code provides this functionality (plus, in pdc202xx_new case the test could
  give false warnings for ATAPI devices because pdc202xx_new driver doesn't
  even support ATAPI DMA)

Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/ide-iops.c         | 53 +++++++++++++++++++++++-------------------
 drivers/ide/ide-lib.c          | 11 +++++++--
 drivers/ide/pci/pdc202xx_new.c | 16 -------------
 drivers/ide/pci/pdc202xx_old.c | 20 +---------------
 include/linux/ide.h            |  1 +
 5 files changed, 40 insertions(+), 61 deletions(-)

(limited to 'drivers/ide/pci')

diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c
index ed6128f6cd98..f0be5f665a0e 100644
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -571,25 +571,40 @@ EXPORT_SYMBOL(ide_wait_stat);
  */
 u8 eighty_ninty_three (ide_drive_t *drive)
 {
-	if(HWIF(drive)->udma_four == 0)
-		return 0;
+	ide_hwif_t *hwif = drive->hwif;
+	struct hd_driveid *id = drive->id;
+
+	if (hwif->udma_four == 0)
+		goto no_80w;
 
 	/* Check for SATA but only if we are ATA5 or higher */
-	if (drive->id->hw_config == 0 && (drive->id->major_rev_num & 0x7FE0))
+	if (id->hw_config == 0 && (id->major_rev_num & 0x7FE0))
 		return 1;
-	if (!(drive->id->hw_config & 0x6000))
-		return 0;
-#ifndef CONFIG_IDEDMA_IVB
-	if(!(drive->id->hw_config & 0x4000))
-		return 0;
-#endif /* CONFIG_IDEDMA_IVB */
+
 	/*
 	 * FIXME:
 	 * - change master/slave IDENTIFY order
 	 * - force bit13 (80c cable present) check
 	 *   (unless the slave device is pre-ATA3)
 	 */
-	return 1;
+#ifndef CONFIG_IDEDMA_IVB
+	if (id->hw_config & 0x4000)
+#else
+	if (id->hw_config & 0x6000)
+#endif
+		return 1;
+
+no_80w:
+	if (drive->udma33_warned == 1)
+		return 0;
+
+	printk(KERN_WARNING "%s: %s side 80-wire cable detection failed, "
+			    "limiting max speed to UDMA33\n",
+			    drive->name, hwif->udma_four ? "drive" : "host");
+
+	drive->udma33_warned = 1;
+
+	return 0;
 }
 
 int ide_ata66_check (ide_drive_t *drive, ide_task_t *args)
@@ -597,23 +612,13 @@ int ide_ata66_check (ide_drive_t *drive, ide_task_t *args)
 	if ((args->tfRegister[IDE_COMMAND_OFFSET] == WIN_SETFEATURES) &&
 	    (args->tfRegister[IDE_SECTOR_OFFSET] > XFER_UDMA_2) &&
 	    (args->tfRegister[IDE_FEATURE_OFFSET] == SETFEATURES_XFER)) {
-#ifndef CONFIG_IDEDMA_IVB
-		if ((drive->id->hw_config & 0x6000) == 0) {
-#else /* !CONFIG_IDEDMA_IVB */
-		if (((drive->id->hw_config & 0x2000) == 0) ||
-		    ((drive->id->hw_config & 0x4000) == 0)) {
-#endif /* CONFIG_IDEDMA_IVB */
-			printk("%s: Speed warnings UDMA 3/4/5 is not "
-				"functional.\n", drive->name);
-			return 1;
-		}
-		if (!HWIF(drive)->udma_four) {
-			printk("%s: Speed warnings UDMA 3/4/5 is not "
-				"functional.\n",
-				HWIF(drive)->name);
+		if (eighty_ninty_three(drive) == 0) {
+			printk(KERN_WARNING "%s: UDMA speeds >UDMA33 cannot "
+					    "be set\n", drive->name);
 			return 1;
 		}
 	}
+
 	return 0;
 }
 
diff --git a/drivers/ide/ide-lib.c b/drivers/ide/ide-lib.c
index 4557fc5a3ea3..3be3c69383f2 100644
--- a/drivers/ide/ide-lib.c
+++ b/drivers/ide/ide-lib.c
@@ -88,8 +88,15 @@ u8 ide_rate_filter(ide_drive_t *drive, u8 speed)
 	if (hwif->udma_filter)
 		mask = hwif->udma_filter(drive);
 
-	if ((mask & 0x78) && (eighty_ninty_three(drive) == 0))
-		mask &= 0x07;
+	/*
+	 * TODO: speed > XFER_UDMA_2 extra check is needed to avoid false
+	 * cable warning from eighty_ninty_three(), moving ide_rate_filter()
+	 * calls from ->speedproc to core code will make this hack go away
+	 */
+	if (speed > XFER_UDMA_2) {
+		if ((mask & 0x78) && (eighty_ninty_three(drive) == 0))
+			mask &= 0x07;
+	}
 
 	if (mask)
 		mode = fls(mask) - 1 + XFER_UDMA_0;
diff --git a/drivers/ide/pci/pdc202xx_new.c b/drivers/ide/pci/pdc202xx_new.c
index 772ca4007de4..65b1e124edf7 100644
--- a/drivers/ide/pci/pdc202xx_new.c
+++ b/drivers/ide/pci/pdc202xx_new.c
@@ -37,8 +37,6 @@
 #include <asm/pci-bridge.h>
 #endif
 
-#define PDC202_DEBUG_CABLE	0
-
 #undef DEBUG
 
 #ifdef DEBUG
@@ -234,17 +232,8 @@ static int config_chipset_for_dma(ide_drive_t *drive)
 {
 	struct hd_driveid *id	= drive->id;
 	ide_hwif_t *hwif	= HWIF(drive);
-	u8 ultra_66		= (id->dma_ultra & 0x0078) ? 1 : 0;
-	u8 cable		= pdcnew_cable_detect(hwif);
 	u8 speed;
 
-	if (ultra_66 && cable) {
-		printk(KERN_WARNING "Warning: %s channel "
-		       "requires an 80-pin cable for operation.\n",
-		       hwif->channel ? "Secondary" : "Primary");
-		printk(KERN_WARNING "%s reduced to Ultra33 mode.\n", drive->name);
-	}
-
 	if (id->capability & 4) {
 		/*
 		 * Set IORDY_EN & PREFETCH_EN (this seems to have
@@ -547,11 +536,6 @@ static void __devinit init_hwif_pdc202new(ide_hwif_t *hwif)
 	if (!noautodma)
 		hwif->autodma = 1;
 	hwif->drives[0].autodma = hwif->drives[1].autodma = hwif->autodma;
-
-#if PDC202_DEBUG_CABLE
-	printk(KERN_DEBUG "%s: %s-pin cable\n",
-		hwif->name, hwif->udma_four ? "80" : "40");
-#endif /* PDC202_DEBUG_CABLE */
 }
 
 static int __devinit init_setup_pdcnew(struct pci_dev *dev, ide_pci_device_t *d)
diff --git a/drivers/ide/pci/pdc202xx_old.c b/drivers/ide/pci/pdc202xx_old.c
index 207a6191fac7..7146fe3f6ba7 100644
--- a/drivers/ide/pci/pdc202xx_old.c
+++ b/drivers/ide/pci/pdc202xx_old.c
@@ -46,7 +46,6 @@
 #include <asm/io.h>
 #include <asm/irq.h>
 
-#define PDC202_DEBUG_CABLE		0
 #define PDC202XX_DEBUG_DRIVE_INFO	0
 
 static const char *pdc_quirk_drives[] = {
@@ -238,20 +237,7 @@ static int config_chipset_for_dma (ide_drive_t *drive)
 	u32 drive_conf		= 0;
 	u8 drive_pci		= 0x60 + (drive->dn << 2);
 	u8 test1 = 0, test2 = 0, speed = -1;
-	u8 AP = 0, cable = 0;
-
-	u8 ultra_66		= ((id->dma_ultra & 0x0010) ||
-				   (id->dma_ultra & 0x0008)) ? 1 : 0;
-
-	if (dev->device != PCI_DEVICE_ID_PROMISE_20246)
-		cable = pdc202xx_old_cable_detect(hwif);
-	else
-		ultra_66 = 0;
-
-	if (ultra_66 && cable) {
-		printk(KERN_WARNING "Warning: %s channel requires an 80-pin cable for operation.\n", hwif->channel ? "Secondary":"Primary");
-		printk(KERN_WARNING "%s reduced to Ultra33 mode.\n", drive->name);
-	}
+	u8 AP = 0;
 
 	if (dev->device != PCI_DEVICE_ID_PROMISE_20246)
 		pdc_old_disable_66MHz_clock(drive->hwif);
@@ -477,10 +463,6 @@ static void __devinit init_hwif_pdc202xx(ide_hwif_t *hwif)
 	if (!noautodma)
 		hwif->autodma = 1;
 	hwif->drives[0].autodma = hwif->drives[1].autodma = hwif->autodma;
-#if PDC202_DEBUG_CABLE
-	printk(KERN_DEBUG "%s: %s-pin cable\n",
-		hwif->name, hwif->udma_four ? "80" : "40");
-#endif /* PDC202_DEBUG_CABLE */	
 }
 
 static void __devinit init_dma_pdc202xx(ide_hwif_t *hwif, unsigned long dmabase)
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 477b8c6be727..ca924b295c2e 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -605,6 +605,7 @@ typedef struct ide_drive_s {
 	unsigned scsi		: 1;	/* 0=default, 1=ide-scsi emulation */
 	unsigned sleeping	: 1;	/* 1=sleeping & sleep field valid */
 	unsigned post_reset	: 1;
+	unsigned udma33_warned	: 1;
 
 	u8	addressing;	/* 0=28-bit, 1=48-bit, 2=48-bit doing 28-bit */
         u8	quirk_list;	/* considered quirky, set for a specific host */
-- 
cgit v1.2.3


From 869c56ee9de1b72cd3f8ab9cdfbd3601e55c61f2 Mon Sep 17 00:00:00 2001
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Thu, 10 May 2007 00:01:10 +0200
Subject: ide: add "initializing" argument to ide_register_hw()

Add "initializing" argument to ide_register_hw() and use it instead of ide.c
wide variable of the same name.  Update all users of ide_register_hw()
accordingly.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/arm/bast-ide.c     |  2 +-
 drivers/ide/arm/ide_arm.c      |  2 +-
 drivers/ide/cris/ide-cris.c    |  2 +-
 drivers/ide/h8300/ide-h8300.c  |  2 +-
 drivers/ide/ide-pnp.c          |  2 +-
 drivers/ide/ide.c              | 16 +++++++---------
 drivers/ide/legacy/buddha.c    |  2 +-
 drivers/ide/legacy/falconide.c |  2 +-
 drivers/ide/legacy/gayle.c     |  2 +-
 drivers/ide/legacy/ide-cs.c    |  2 +-
 drivers/ide/legacy/macide.c    |  6 +++---
 drivers/ide/legacy/q40ide.c    |  2 +-
 drivers/ide/pci/delkin_cb.c    |  2 +-
 drivers/macintosh/mediabay.c   |  2 +-
 include/linux/ide.h            |  5 +++--
 15 files changed, 25 insertions(+), 26 deletions(-)

(limited to 'drivers/ide/pci')

diff --git a/drivers/ide/arm/bast-ide.c b/drivers/ide/arm/bast-ide.c
index 9d474e5fd8dc..f7449d04114a 100644
--- a/drivers/ide/arm/bast-ide.c
+++ b/drivers/ide/arm/bast-ide.c
@@ -45,7 +45,7 @@ bastide_register(unsigned int base, unsigned int aux, int irq,
 	hw.io_ports[IDE_CONTROL_OFFSET] = aux + (6 * 0x20);
 	hw.irq = irq;
 
-	ide_register_hw(&hw, hwif);
+	ide_register_hw(&hw, 0, hwif);
 
 	return 0;
 }
diff --git a/drivers/ide/arm/ide_arm.c b/drivers/ide/arm/ide_arm.c
index 23488c4d1fcd..a3d6744e870a 100644
--- a/drivers/ide/arm/ide_arm.c
+++ b/drivers/ide/arm/ide_arm.c
@@ -38,6 +38,6 @@ void __init ide_arm_init(void)
 		memset(&hw, 0, sizeof(hw));
 		ide_std_init_ports(&hw, IDE_ARM_IO, IDE_ARM_IO + 0x206);
 		hw.irq = IDE_ARM_IRQ;
-		ide_register_hw(&hw, NULL);
+		ide_register_hw(&hw, 1, NULL);
 	}
 }
diff --git a/drivers/ide/cris/ide-cris.c b/drivers/ide/cris/ide-cris.c
index 9691d089fce8..c04cb25a01ff 100644
--- a/drivers/ide/cris/ide-cris.c
+++ b/drivers/ide/cris/ide-cris.c
@@ -796,7 +796,7 @@ init_e100_ide (void)
 		                ide_offsets,
 		                0, 0, cris_ide_ack_intr,
 		                ide_default_irq(0));
-		ide_register_hw(&hw, &hwif);
+		ide_register_hw(&hw, 1, &hwif);
 		hwif->mmio = 1;
 		hwif->chipset = ide_etrax100;
 		hwif->tuneproc = &tune_cris_ide;
diff --git a/drivers/ide/h8300/ide-h8300.c b/drivers/ide/h8300/ide-h8300.c
index 88750a300337..6d26ad7360d5 100644
--- a/drivers/ide/h8300/ide-h8300.c
+++ b/drivers/ide/h8300/ide-h8300.c
@@ -101,7 +101,7 @@ void __init h8300_ide_init(void)
 	hw_setup(&hw);
 
 	/* register if */
-	idx = ide_register_hw(&hw, &hwif);
+	idx = ide_register_hw(&hw, 1, &hwif);
 	if (idx == -1) {
 		printk(KERN_ERR "ide-h8300: IDE I/F register failed\n");
 		return;
diff --git a/drivers/ide/ide-pnp.c b/drivers/ide/ide-pnp.c
index 98410ca044cf..2b8009c50e91 100644
--- a/drivers/ide/ide-pnp.c
+++ b/drivers/ide/ide-pnp.c
@@ -42,7 +42,7 @@ static int idepnp_probe(struct pnp_dev * dev, const struct pnp_device_id *dev_id
 	hw.irq = pnp_irq(dev, 0);
 	hw.dma = NO_DMA;
 
-	index = ide_register_hw(&hw, &hwif);
+	index = ide_register_hw(&hw, 1, &hwif);
 
 	if (index != -1) {
 	    	printk(KERN_INFO "ide%d: generic PnP IDE interface\n", index);
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index 614c5fd43cd2..0fc532850bbe 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -168,7 +168,6 @@ static const u8 ide_hwif_to_major[] = { IDE0_MAJOR, IDE1_MAJOR,
 
 static int idebus_parameter;	/* holds the "idebus=" parameter */
 static int system_bus_speed;	/* holds what we think is VESA/PCI bus speed */
-static int initializing;	/* set while initializing built-in drivers */
 
 DECLARE_MUTEX(ide_cfg_sem);
  __cacheline_aligned_in_smp DEFINE_SPINLOCK(ide_lock);
@@ -302,9 +301,7 @@ static void __init init_ide_data (void)
 #endif
 	}
 #ifdef CONFIG_IDE_ARM
-	initializing = 1;
 	ide_arm_init();
-	initializing = 0;
 #endif
 }
 
@@ -749,6 +746,7 @@ void ide_setup_ports (	hw_regs_t *hw,
 /**
  *	ide_register_hw_with_fixup	-	register IDE interface
  *	@hw: hardware registers
+ *	@initializing: set while initializing built-in drivers
  *	@hwifp: pointer to returned hwif
  *	@fixup: fixup function
  *
@@ -758,7 +756,9 @@ void ide_setup_ports (	hw_regs_t *hw,
  *	Returns -1 on error.
  */
 
-int ide_register_hw_with_fixup(hw_regs_t *hw, ide_hwif_t **hwifp, void(*fixup)(ide_hwif_t *hwif))
+int ide_register_hw_with_fixup(hw_regs_t *hw, int initializing,
+			       ide_hwif_t **hwifp,
+			       void(*fixup)(ide_hwif_t *hwif))
 {
 	int index, retry = 1;
 	ide_hwif_t *hwif;
@@ -810,9 +810,9 @@ found:
 
 EXPORT_SYMBOL(ide_register_hw_with_fixup);
 
-int ide_register_hw(hw_regs_t *hw, ide_hwif_t **hwifp)
+int ide_register_hw(hw_regs_t *hw, int initializing, ide_hwif_t **hwifp)
 {
-	return ide_register_hw_with_fixup(hw, hwifp, NULL);
+	return ide_register_hw_with_fixup(hw, initializing, hwifp, NULL);
 }
 
 EXPORT_SYMBOL(ide_register_hw);
@@ -1108,7 +1108,7 @@ int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device
 			ide_init_hwif_ports(&hw, (unsigned long) args[0],
 					    (unsigned long) args[1], NULL);
 			hw.irq = args[2];
-			if (ide_register_hw(&hw, NULL) == -1)
+			if (ide_register_hw(&hw, 0, NULL) == -1)
 				return -EIO;
 			return 0;
 		}
@@ -1819,10 +1819,8 @@ static int __init ide_init(void)
 		(void)qd65xx_init();
 #endif
 
-	initializing = 1;
 	/* Probe for special PCI and other "known" interface chipsets. */
 	probe_for_hwifs();
-	initializing = 0;
 
 	proc_ide_create();
 
diff --git a/drivers/ide/legacy/buddha.c b/drivers/ide/legacy/buddha.c
index 1ed224a01f79..101aee1711c4 100644
--- a/drivers/ide/legacy/buddha.c
+++ b/drivers/ide/legacy/buddha.c
@@ -213,7 +213,7 @@ fail_base2:
 						IRQ_AMIGA_PORTS);
 			}	
 			
-			index = ide_register_hw(&hw, &hwif);
+			index = ide_register_hw(&hw, 1, &hwif);
 			if (index != -1) {
 				hwif->mmio = 1;
 				printk("ide%d: ", index);
diff --git a/drivers/ide/legacy/falconide.c b/drivers/ide/legacy/falconide.c
index a9f2cd5bb81e..e1e9d9d6893f 100644
--- a/drivers/ide/legacy/falconide.c
+++ b/drivers/ide/legacy/falconide.c
@@ -70,7 +70,7 @@ void __init falconide_init(void)
 			0, 0, NULL,
 //			falconide_iops,
 			IRQ_MFP_IDE);
-	index = ide_register_hw(&hw, NULL);
+	index = ide_register_hw(&hw, 1, NULL);
 
 	if (index != -1)
 	    printk("ide%d: Falcon IDE interface\n", index);
diff --git a/drivers/ide/legacy/gayle.c b/drivers/ide/legacy/gayle.c
index dcfadbbf55d8..0830a021bbb6 100644
--- a/drivers/ide/legacy/gayle.c
+++ b/drivers/ide/legacy/gayle.c
@@ -165,7 +165,7 @@ found:
 //			&gayle_iops,
 			IRQ_AMIGA_PORTS);
 
-	index = ide_register_hw(&hw, &hwif);
+	index = ide_register_hw(&hw, 1, &hwif);
 	if (index != -1) {
 	    hwif->mmio = 1;
 	    switch (i) {
diff --git a/drivers/ide/legacy/ide-cs.c b/drivers/ide/legacy/ide-cs.c
index c6522a64d7ec..2f3977f195b7 100644
--- a/drivers/ide/legacy/ide-cs.c
+++ b/drivers/ide/legacy/ide-cs.c
@@ -153,7 +153,7 @@ static int idecs_register(unsigned long io, unsigned long ctl, unsigned long irq
     hw.irq = irq;
     hw.chipset = ide_pci;
     hw.dev = &handle->dev;
-    return ide_register_hw_with_fixup(&hw, NULL, ide_undecoded_slave);
+    return ide_register_hw_with_fixup(&hw, 0, NULL, ide_undecoded_slave);
 }
 
 /*======================================================================
diff --git a/drivers/ide/legacy/macide.c b/drivers/ide/legacy/macide.c
index 4c0079ad52ac..c211fc78345d 100644
--- a/drivers/ide/legacy/macide.c
+++ b/drivers/ide/legacy/macide.c
@@ -102,21 +102,21 @@ void macide_init(void)
 				0, 0, macide_ack_intr,
 //				quadra_ide_iops,
 				IRQ_NUBUS_F);
-		index = ide_register_hw(&hw, &hwif);
+		index = ide_register_hw(&hw, 1, &hwif);
 		break;
 	case MAC_IDE_PB:
 		ide_setup_ports(&hw, IDE_BASE, macide_offsets,
 				0, 0, macide_ack_intr,
 //				macide_pb_iops,
 				IRQ_NUBUS_C);
-		index = ide_register_hw(&hw, &hwif);
+		index = ide_register_hw(&hw, 1, &hwif);
 		break;
 	case MAC_IDE_BABOON:
 		ide_setup_ports(&hw, BABOON_BASE, macide_offsets,
 				0, 0, NULL,
 //				macide_baboon_iops,
 				IRQ_BABOON_1);
-		index = ide_register_hw(&hw, &hwif);
+		index = ide_register_hw(&hw, 1, &hwif);
 		if (index == -1) break;
 		if (macintosh_config->ident == MAC_MODEL_PB190) {
 
diff --git a/drivers/ide/legacy/q40ide.c b/drivers/ide/legacy/q40ide.c
index 74f08124eabb..e628a983ce33 100644
--- a/drivers/ide/legacy/q40ide.c
+++ b/drivers/ide/legacy/q40ide.c
@@ -142,7 +142,7 @@ void q40ide_init(void)
 			0, NULL,
 //			m68kide_iops,
 			q40ide_default_irq(pcide_bases[i]));
-	index = ide_register_hw(&hw, &hwif);
+	index = ide_register_hw(&hw, 1, &hwif);
 	// **FIXME**
 	if (index != -1)
 		hwif->mmio = 1;
diff --git a/drivers/ide/pci/delkin_cb.c b/drivers/ide/pci/delkin_cb.c
index dd7ec37fdeab..46f4a888c037 100644
--- a/drivers/ide/pci/delkin_cb.c
+++ b/drivers/ide/pci/delkin_cb.c
@@ -80,7 +80,7 @@ delkin_cb_probe (struct pci_dev *dev, const struct pci_device_id *id)
 	hw.irq = dev->irq;
 	hw.chipset = ide_pci;		/* this enables IRQ sharing */
 
-	rc = ide_register_hw_with_fixup(&hw, &hwif, ide_undecoded_slave);
+	rc = ide_register_hw_with_fixup(&hw, 0, &hwif, ide_undecoded_slave);
 	if (rc < 0) {
 		printk(KERN_ERR "delkin_cb: ide_register_hw failed (%d)\n", rc);
 		pci_disable_device(dev);
diff --git a/drivers/macintosh/mediabay.c b/drivers/macintosh/mediabay.c
index 0acf2f7fd9d7..c803d2bba65d 100644
--- a/drivers/macintosh/mediabay.c
+++ b/drivers/macintosh/mediabay.c
@@ -563,7 +563,7 @@ static void media_bay_step(int i)
 				ide_init_hwif_ports(&hw, (unsigned long) bay->cd_base, (unsigned long) 0, NULL);
 				hw.irq = bay->cd_irq;
 				hw.chipset = ide_pmac;
-				bay->cd_index = ide_register_hw(&hw, NULL);
+				bay->cd_index = ide_register_hw(&hw, 0, NULL);
 				pmu_resume();
 			}
 			if (bay->cd_index == -1) {
diff --git a/include/linux/ide.h b/include/linux/ide.h
index ca924b295c2e..bdb97655ef61 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -223,8 +223,9 @@ typedef struct hw_regs_s {
 /*
  * Register new hardware with ide
  */
-int ide_register_hw(hw_regs_t *hw, struct hwif_s **hwifp);
-int ide_register_hw_with_fixup(hw_regs_t *, struct hwif_s **, void (*)(struct hwif_s *));
+int ide_register_hw(hw_regs_t *, int, struct hwif_s **);
+int ide_register_hw_with_fixup(hw_regs_t *, int, struct hwif_s **,
+			       void (*)(struct hwif_s *));
 
 /*
  * Set up hw_regs_t structure before calling ide_register_hw (optional)
-- 
cgit v1.2.3


From 5cbf79cdb37be2aa2a1b4fa94144526b14557060 Mon Sep 17 00:00:00 2001
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Thu, 10 May 2007 00:01:11 +0200
Subject: ide: add ide_proc_register_port()

* create_proc_ide_interfaces() tries to add /proc entries for every probed
  and initialized IDE port, replace it by ide_proc_register_port() which does
  it only for the given port (also rename destroy_proc_ide_interface() to
  ide_proc_unregister_port() for consistency)

* convert {create,destroy}_proc_ide_interface[s]() users to use new functions

* pmac driver depended on proc_ide_create() to add /proc port entries, fix it

* au1xxx-ide, swarm and cs5520 drivers depended indirectly on ide-generic
  driver (CONFIG_IDE_GENERIC=y) to add port /proc entries, fix them

* there is now no need to add /proc entries for IDE ports in proc_ide_create()
  so don't do it

* proc_ide_create() needs now to be called before drivers are probed - fix it,
  while at it make proc_ide_create() create /proc "ide" directory

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
 drivers/ide/arm/icside.c      |  7 +++++--
 drivers/ide/arm/rapide.c      |  2 +-
 drivers/ide/ide-generic.c     |  2 --
 drivers/ide/ide-probe.c       |  3 +++
 drivers/ide/ide-proc.c        | 34 +++++++++++++++++-----------------
 drivers/ide/ide.c             | 14 +++-----------
 drivers/ide/legacy/ali14xx.c  |  3 ++-
 drivers/ide/legacy/dtc2278.c  |  3 ++-
 drivers/ide/legacy/ht6560b.c  |  3 ++-
 drivers/ide/legacy/qd65xx.c   |  7 ++++---
 drivers/ide/legacy/umc8672.c  |  3 ++-
 drivers/ide/mips/au1xxx-ide.c |  3 +++
 drivers/ide/mips/swarm.c      |  3 +++
 drivers/ide/pci/cs5520.c      | 20 ++++++++++++++++----
 drivers/ide/pci/sgiioc4.c     |  2 +-
 drivers/ide/ppc/pmac.c        |  2 ++
 drivers/ide/setup-pci.c       | 25 +++++++++++++++++++++----
 include/linux/ide.h           | 10 ++++------
 18 files changed, 91 insertions(+), 55 deletions(-)

(limited to 'drivers/ide/pci')

diff --git a/drivers/ide/arm/icside.c b/drivers/ide/arm/icside.c
index f383ace2a087..1fe0457243db 100644
--- a/drivers/ide/arm/icside.c
+++ b/drivers/ide/arm/icside.c
@@ -591,7 +591,8 @@ icside_register_v5(struct icside_state *state, struct expansion_card *ec)
 	state->hwif[0] = hwif;
 
 	probe_hwif_init(hwif);
-	create_proc_ide_interfaces();
+
+	ide_proc_register_port(hwif);
 
 	return 0;
 }
@@ -679,7 +680,9 @@ icside_register_v6(struct icside_state *state, struct expansion_card *ec)
 
 	probe_hwif_init(hwif);
 	probe_hwif_init(mate);
-	create_proc_ide_interfaces();
+
+	ide_proc_register_port(hwif);
+	ide_proc_register_port(mate);
 
 	return 0;
 
diff --git a/drivers/ide/arm/rapide.c b/drivers/ide/arm/rapide.c
index 9c6c49fdd2b1..890ea3fac3c6 100644
--- a/drivers/ide/arm/rapide.c
+++ b/drivers/ide/arm/rapide.c
@@ -76,7 +76,7 @@ rapide_probe(struct expansion_card *ec, const struct ecard_id *id)
 		hwif->gendev.parent = &ec->dev;
 		hwif->noprobe = 0;
 		probe_hwif_init(hwif);
-		create_proc_ide_interfaces();
+		ide_proc_register_port(hwif);
 		ecard_set_drvdata(ec, hwif);
 		goto out;
 	}
diff --git a/drivers/ide/ide-generic.c b/drivers/ide/ide-generic.c
index 99fd56151131..0f72b98d727f 100644
--- a/drivers/ide/ide-generic.c
+++ b/drivers/ide/ide-generic.c
@@ -22,8 +22,6 @@ static int __init ide_generic_init(void)
 	if (ide_hwifs[0].io_ports[IDE_DATA_OFFSET])
 		ide_release_lock();	/* for atari only */
 
-	create_proc_ide_interfaces();
-
 	return 0;
 }
 
diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index 8f15c23aa70d..3cebed77f55d 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -1427,6 +1427,9 @@ int ideprobe_init (void)
 				}
 		}
 	}
+	for (index = 0; index < MAX_HWIFS; ++index)
+		if (probe[index])
+			ide_proc_register_port(&ide_hwifs[index]);
 	return 0;
 }
 
diff --git a/drivers/ide/ide-proc.c b/drivers/ide/ide-proc.c
index 949a6f609d84..d50bd996ff22 100644
--- a/drivers/ide/ide-proc.c
+++ b/drivers/ide/ide-proc.c
@@ -39,6 +39,8 @@
 
 #include <asm/io.h>
 
+static struct proc_dir_entry *proc_ide_root;
+
 static int proc_ide_read_imodel
 	(char *page, char **start, off_t off, int count, int *eof, void *data)
 {
@@ -783,26 +785,24 @@ static ide_proc_entry_t hwif_entries[] = {
 	{ NULL,	0, NULL, NULL }
 };
 
-void create_proc_ide_interfaces(void)
+void ide_proc_register_port(ide_hwif_t *hwif)
 {
-	int	h;
+	if (!hwif->present)
+		return;
 
-	for (h = 0; h < MAX_HWIFS; h++) {
-		ide_hwif_t *hwif = &ide_hwifs[h];
+	if (!hwif->proc) {
+		hwif->proc = proc_mkdir(hwif->name, proc_ide_root);
 
-		if (!hwif->present)
-			continue;
-		if (!hwif->proc) {
-			hwif->proc = proc_mkdir(hwif->name, proc_ide_root);
-			if (!hwif->proc)
-				return;
-			ide_add_proc_entries(hwif->proc, hwif_entries, hwif);
-		}
-		create_proc_ide_drives(hwif);
+		if (!hwif->proc)
+			return;
+
+		ide_add_proc_entries(hwif->proc, hwif_entries, hwif);
 	}
+
+	create_proc_ide_drives(hwif);
 }
 
-EXPORT_SYMBOL(create_proc_ide_interfaces);
+EXPORT_SYMBOL_GPL(ide_proc_register_port);
 
 #ifdef CONFIG_BLK_DEV_IDEPCI
 void ide_pci_create_host_proc(const char *name, get_info_t *get_info)
@@ -813,7 +813,7 @@ void ide_pci_create_host_proc(const char *name, get_info_t *get_info)
 EXPORT_SYMBOL_GPL(ide_pci_create_host_proc);
 #endif
 
-void destroy_proc_ide_interface(ide_hwif_t *hwif)
+void ide_proc_unregister_port(ide_hwif_t *hwif)
 {
 	if (hwif->proc) {
 		destroy_proc_ide_drives(hwif);
@@ -860,11 +860,11 @@ void proc_ide_create(void)
 {
 	struct proc_dir_entry *entry;
 
+	proc_ide_root = proc_mkdir("ide", NULL);
+
 	if (!proc_ide_root)
 		return;
 
-	create_proc_ide_interfaces();
-
 	entry = create_proc_entry("drivers", 0, proc_ide_root);
 	if (entry)
 		entry->proc_fops = &ide_drivers_operations;
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index 0fc532850bbe..038f2610e734 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -347,10 +347,6 @@ static int ide_system_bus_speed(void)
 	return system_bus_speed;
 }
 
-#ifdef CONFIG_IDE_PROC_FS
-struct proc_dir_entry *proc_ide_root;
-#endif
-
 static struct resource* hwif_request_region(ide_hwif_t *hwif,
 					    unsigned long addr, int num)
 {
@@ -594,7 +590,7 @@ void ide_unregister(unsigned int index)
 
 	spin_unlock_irq(&ide_lock);
 
-	destroy_proc_ide_interface(hwif);
+	ide_proc_unregister_port(hwif);
 
 	hwgroup = hwif->hwgroup;
 	/*
@@ -799,7 +795,7 @@ found:
 
 	if (!initializing) {
 		probe_hwif_init_with_fixup(hwif, fixup);
-		create_proc_ide_interfaces();
+		ide_proc_register_port(hwif);
 	}
 
 	if (hwifp)
@@ -1794,9 +1790,7 @@ static int __init ide_init(void)
 
 	init_ide_data();
 
-#ifdef CONFIG_IDE_PROC_FS
-	proc_ide_root = proc_mkdir("ide", NULL);
-#endif
+	proc_ide_create();
 
 #ifdef CONFIG_BLK_DEV_ALI14XX
 	if (probe_ali14xx)
@@ -1822,8 +1816,6 @@ static int __init ide_init(void)
 	/* Probe for special PCI and other "known" interface chipsets. */
 	probe_for_hwifs();
 
-	proc_ide_create();
-
 	return 0;
 }
 
diff --git a/drivers/ide/legacy/ali14xx.c b/drivers/ide/legacy/ali14xx.c
index 91961aa03047..df17ed68c0bc 100644
--- a/drivers/ide/legacy/ali14xx.c
+++ b/drivers/ide/legacy/ali14xx.c
@@ -223,7 +223,8 @@ static int __init ali14xx_probe(void)
 	probe_hwif_init(hwif);
 	probe_hwif_init(mate);
 
-	create_proc_ide_interfaces();
+	ide_proc_register_port(hwif);
+	ide_proc_register_port(mate);
 
 	return 0;
 }
diff --git a/drivers/ide/legacy/dtc2278.c b/drivers/ide/legacy/dtc2278.c
index 0219ffa64db6..36a3f0ac6162 100644
--- a/drivers/ide/legacy/dtc2278.c
+++ b/drivers/ide/legacy/dtc2278.c
@@ -138,7 +138,8 @@ static int __init dtc2278_probe(void)
 	probe_hwif_init(hwif);
 	probe_hwif_init(mate);
 
-	create_proc_ide_interfaces();
+	ide_proc_register_port(hwif);
+	ide_proc_register_port(mate);
 
 	return 0;
 }
diff --git a/drivers/ide/legacy/ht6560b.c b/drivers/ide/legacy/ht6560b.c
index a2832643c522..c8f353b1296f 100644
--- a/drivers/ide/legacy/ht6560b.c
+++ b/drivers/ide/legacy/ht6560b.c
@@ -357,7 +357,8 @@ int __init ht6560b_init(void)
 	probe_hwif_init(hwif);
 	probe_hwif_init(mate);
 
-	create_proc_ide_interfaces();
+	ide_proc_register_port(hwif);
+	ide_proc_register_port(mate);
 
 	return 0;
 
diff --git a/drivers/ide/legacy/qd65xx.c b/drivers/ide/legacy/qd65xx.c
index 2fb8f50f1293..d1414a75b523 100644
--- a/drivers/ide/legacy/qd65xx.c
+++ b/drivers/ide/legacy/qd65xx.c
@@ -427,7 +427,7 @@ static int __init qd_probe(int base)
 		qd_setup(hwif, base, config, QD6500_DEF_DATA, QD6500_DEF_DATA,
 			 &qd6500_tune_drive);
 
-		create_proc_ide_interfaces();
+		ide_proc_register_port(hwif);
 
 		return 1;
 	}
@@ -459,7 +459,7 @@ static int __init qd_probe(int base)
 				 &qd6580_tune_drive);
 			qd_write_reg(QD_DEF_CONTR,QD_CONTROL_PORT);
 
-			create_proc_ide_interfaces();
+			ide_proc_register_port(hwif);
 
 			return 1;
 		} else {
@@ -479,7 +479,8 @@ static int __init qd_probe(int base)
 				 &qd6580_tune_drive);
 			qd_write_reg(QD_DEF_CONTR,QD_CONTROL_PORT);
 
-			create_proc_ide_interfaces();
+			ide_proc_register_port(hwif);
+			ide_proc_register_port(mate);
 
 			return 0; /* no other qd65xx possible */
 		}
diff --git a/drivers/ide/legacy/umc8672.c b/drivers/ide/legacy/umc8672.c
index ca7974455578..ddc403a0bd82 100644
--- a/drivers/ide/legacy/umc8672.c
+++ b/drivers/ide/legacy/umc8672.c
@@ -160,7 +160,8 @@ static int __init umc8672_probe(void)
 	probe_hwif_init(hwif);
 	probe_hwif_init(mate);
 
-	create_proc_ide_interfaces();
+	ide_proc_register_port(hwif);
+	ide_proc_register_port(mate);
 
 	return 0;
 }
diff --git a/drivers/ide/mips/au1xxx-ide.c b/drivers/ide/mips/au1xxx-ide.c
index d54d9fe92a7d..ca95e990862e 100644
--- a/drivers/ide/mips/au1xxx-ide.c
+++ b/drivers/ide/mips/au1xxx-ide.c
@@ -760,6 +760,9 @@ static int au_ide_probe(struct device *dev)
 #endif
 
 	probe_hwif_init(hwif);
+
+	ide_proc_register_port(hwif);
+
 	dev_set_drvdata(dev, hwif);
 
 	printk(KERN_INFO "Au1xxx IDE(builtin) configured for %s\n", mode );
diff --git a/drivers/ide/mips/swarm.c b/drivers/ide/mips/swarm.c
index 81fa06851b27..6e935d7c63fd 100644
--- a/drivers/ide/mips/swarm.c
+++ b/drivers/ide/mips/swarm.c
@@ -129,6 +129,9 @@ static int __devinit swarm_ide_probe(struct device *dev)
 	hwif->irq = hwif->hw.irq;
 
 	probe_hwif_init(hwif);
+
+	ide_proc_register_port(hwif);
+
 	dev_set_drvdata(dev, hwif);
 
 	return 0;
diff --git a/drivers/ide/pci/cs5520.c b/drivers/ide/pci/cs5520.c
index 400859a839f7..3b88a3a56116 100644
--- a/drivers/ide/pci/cs5520.c
+++ b/drivers/ide/pci/cs5520.c
@@ -213,6 +213,7 @@ static ide_pci_device_t cyrix_chipsets[] __devinitdata = {
  
 static int __devinit cs5520_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 {
+	ide_hwif_t *hwif = NULL, *mate = NULL;
 	ata_index_t index;
 	ide_pci_device_t *d = &cyrix_chipsets[id->driver_data];
 
@@ -239,10 +240,21 @@ static int __devinit cs5520_init_one(struct pci_dev *dev, const struct pci_devic
 
 	ide_pci_setup_ports(dev, d, 14, &index);
 
-	if((index.b.low & 0xf0) != 0xf0)
-		probe_hwif_init(&ide_hwifs[index.b.low]);
-	if((index.b.high & 0xf0) != 0xf0)
-		probe_hwif_init(&ide_hwifs[index.b.high]);
+	if ((index.b.low & 0xf0) != 0xf0)
+		hwif = &ide_hwifs[index.b.low];
+	if ((index.b.high & 0xf0) != 0xf0)
+		mate = &ide_hwifs[index.b.high];
+
+	if (hwif)
+		probe_hwif_init(hwif);
+	if (mate)
+		probe_hwif_init(mate);
+
+	if (hwif)
+		ide_proc_register_port(hwif);
+	if (mate)
+		ide_proc_register_port(mate);
+
 	return 0;
 }
 
diff --git a/drivers/ide/pci/sgiioc4.c b/drivers/ide/pci/sgiioc4.c
index fd09b295a69d..d3185e29a38e 100644
--- a/drivers/ide/pci/sgiioc4.c
+++ b/drivers/ide/pci/sgiioc4.c
@@ -692,7 +692,7 @@ sgiioc4_ide_setup_pci_device(struct pci_dev *dev, ide_pci_device_t * d)
 		return -EIO;
 
 	/* Create /proc/ide entries */
-	create_proc_ide_interfaces();
+	ide_proc_register_port(hwif);
 
 	return 0;
 }
diff --git a/drivers/ide/ppc/pmac.c b/drivers/ide/ppc/pmac.c
index a49ebe44babd..45fc36f0f219 100644
--- a/drivers/ide/ppc/pmac.c
+++ b/drivers/ide/ppc/pmac.c
@@ -1276,6 +1276,8 @@ pmac_ide_setup_device(pmac_ide_hwif_t *pmif, ide_hwif_t *hwif)
 	/* We probe the hwif now */
 	probe_hwif_init(hwif);
 
+	ide_proc_register_port(hwif);
+
 	return 0;
 }
 
diff --git a/drivers/ide/setup-pci.c b/drivers/ide/setup-pci.c
index 118fb3205ca8..892cda755782 100644
--- a/drivers/ide/setup-pci.c
+++ b/drivers/ide/setup-pci.c
@@ -702,6 +702,7 @@ out:
 
 int ide_setup_pci_device(struct pci_dev *dev, ide_pci_device_t *d)
 {
+	ide_hwif_t *hwif = NULL, *mate = NULL;
 	ata_index_t index_list;
 	int ret;
 
@@ -710,11 +711,19 @@ int ide_setup_pci_device(struct pci_dev *dev, ide_pci_device_t *d)
 		goto out;
 
 	if ((index_list.b.low & 0xf0) != 0xf0)
-		probe_hwif_init_with_fixup(&ide_hwifs[index_list.b.low], d->fixup);
+		hwif = &ide_hwifs[index_list.b.low];
 	if ((index_list.b.high & 0xf0) != 0xf0)
-		probe_hwif_init_with_fixup(&ide_hwifs[index_list.b.high], d->fixup);
+		mate = &ide_hwifs[index_list.b.high];
 
-	create_proc_ide_interfaces();
+	if (hwif)
+		probe_hwif_init_with_fixup(hwif, d->fixup);
+	if (mate)
+		probe_hwif_init_with_fixup(mate, d->fixup);
+
+	if (hwif)
+		ide_proc_register_port(hwif);
+	if (mate)
+		ide_proc_register_port(mate);
 out:
 	return ret;
 }
@@ -748,7 +757,15 @@ int ide_setup_pci_devices(struct pci_dev *dev1, struct pci_dev *dev2,
 		}
 	}
 
-	create_proc_ide_interfaces();
+	for (i = 0; i < 2; i++) {
+		u8 idx[2] = { index_list[i].b.low, index_list[i].b.high };
+		int j;
+
+		for (j = 0; j < 2; j++) {
+			if ((idx[j] & 0xf0) != 0xf0)
+				ide_proc_register_port(ide_hwifs + idx[j]);
+		}
+	}
 out:
 	return ret;
 }
diff --git a/include/linux/ide.h b/include/linux/ide.h
index bdb97655ef61..52d482a16dd9 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -909,12 +909,10 @@ typedef struct {
 	write_proc_t	*write_proc;
 } ide_proc_entry_t;
 
-extern struct proc_dir_entry *proc_ide_root;
-
 void proc_ide_create(void);
 void proc_ide_destroy(void);
-void create_proc_ide_interfaces(void);
-void destroy_proc_ide_interface(ide_hwif_t *);
+void ide_proc_register_port(ide_hwif_t *);
+void ide_proc_unregister_port(ide_hwif_t *);
 void ide_proc_register_driver(ide_drive_t *, ide_driver_t *);
 void ide_proc_unregister_driver(ide_drive_t *, ide_driver_t *);
 
@@ -945,8 +943,8 @@ void ide_pci_create_host_proc(const char *, get_info_t *);
 #else
 static inline void proc_ide_create(void) { ; }
 static inline void proc_ide_destroy(void) { ; }
-static inline void create_proc_ide_interfaces(void) { ; }
-static inline void destroy_proc_ide_interface(ide_hwif_t *hwif) { ; }
+static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
+static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
 static inline void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
 static inline void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
 static inline void ide_add_generic_settings(ide_drive_t *drive) { ; }
-- 
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