Merge master.kernel.org:/pub/scm/linux/kernel/git/bart/ide-2.6

1 files changed, 114 insertions, 263 deletions

diff --git a/drivers/ide/pci/via82cxxx.c b/drivers/ide/pci/via82cxxx.c
index a4d099c937ff7..cee2c374cd2f7 100644
--- a/drivers/ide/pci/via82cxxx.c
+++ b/drivers/ide/pci/via82cxxx.c
@@ -100,185 +100,14 @@ static struct via_isa_bridge {
 	{ NULL }
 };
 
-static struct via_isa_bridge *via_config;
-static unsigned int via_80w;
 static unsigned int via_clock;
 static char *via_dma[] = { "MWDMA16", "UDMA33", "UDMA66", "UDMA100", "UDMA133" };
 
-/*
- * VIA /proc entry.
- */
-
-#if defined(DISPLAY_VIA_TIMINGS) && defined(CONFIG_PROC_FS)
-
-#include <linux/stat.h>
-#include <linux/proc_fs.h>
-
-static u8 via_proc = 0;
-static unsigned long via_base;
-static struct pci_dev *bmide_dev, *isa_dev;
-
-static char *via_control3[] = { "No limit", "64", "128", "192" };
-
-#define via_print(format, arg...) p += sprintf(p, format "\n" , ## arg)
-#define via_print_drive(name, format, arg...)\
-	p += sprintf(p, name); for (i = 0; i < 4; i++) p += sprintf(p, format, ## arg); p += sprintf(p, "\n");
-
-
-/**
- *	via_get_info		-	generate via /proc file 
- *	@buffer: buffer for data
- *	@addr: set to start of data to use
- *	@offset: current file offset
- *	@count: size of read
- *
- *	Fills in buffer with the debugging/configuration information for
- *	the VIA chipset tuning and attached drives
- */
- 
-static int via_get_info(char *buffer, char **addr, off_t offset, int count)
+struct via82cxxx_dev
 {
-	int speed[4], cycle[4], setup[4], active[4], recover[4], den[4],
-		 uen[4], udma[4], umul[4], active8b[4], recover8b[4];
-	struct pci_dev *dev = bmide_dev;
-	unsigned int v, u, i;
-	int len;
-	u16 c, w;
-	u8 t, x;
-	char *p = buffer;
-
-	via_print("----------VIA BusMastering IDE Configuration"
-		"----------------");
-
-	via_print("Driver Version:                     3.38");
-	via_print("South Bridge:                       VIA %s",
-		via_config->name);
-
-	pci_read_config_byte(isa_dev, PCI_REVISION_ID, &t);
-	pci_read_config_byte(dev, PCI_REVISION_ID, &x);
-	via_print("Revision:                           ISA %#x IDE %#x", t, x);
-	via_print("Highest DMA rate:                   %s",
-		via_dma[via_config->flags & VIA_UDMA]);
-
-	via_print("BM-DMA base:                        %#lx", via_base);
-	via_print("PCI clock:                          %d.%dMHz",
-		via_clock / 1000, via_clock / 100 % 10);
-
-	pci_read_config_byte(dev, VIA_MISC_1, &t);
-	via_print("Master Read  Cycle IRDY:            %dws",
-		(t & 64) >> 6);
-	via_print("Master Write Cycle IRDY:            %dws",
-		(t & 32) >> 5);
-	via_print("BM IDE Status Register Read Retry:  %s",
-		(t & 8) ? "yes" : "no");
-
-	pci_read_config_byte(dev, VIA_MISC_3, &t);
-	via_print("Max DRDY Pulse Width:               %s%s",
-		via_control3[(t & 0x03)], (t & 0x03) ? " PCI clocks" : "");
-
-	via_print("-----------------------Primary IDE"
-		"-------Secondary IDE------");
-	via_print("Read DMA FIFO flush:   %10s%20s",
-		(t & 0x80) ? "yes" : "no", (t & 0x40) ? "yes" : "no");
-	via_print("End Sector FIFO flush: %10s%20s",
-		(t & 0x20) ? "yes" : "no", (t & 0x10) ? "yes" : "no");
-
-	pci_read_config_byte(dev, VIA_IDE_CONFIG, &t);
-	via_print("Prefetch Buffer:       %10s%20s",
-		(t & 0x80) ? "yes" : "no", (t & 0x20) ? "yes" : "no");
-	via_print("Post Write Buffer:     %10s%20s",
-		(t & 0x40) ? "yes" : "no", (t & 0x10) ? "yes" : "no");
-
-	pci_read_config_byte(dev, VIA_IDE_ENABLE, &t);
-	via_print("Enabled:               %10s%20s",
-		(t & 0x02) ? "yes" : "no", (t & 0x01) ? "yes" : "no");
-
-	c = inb(via_base + 0x02) | (inb(via_base + 0x0a) << 8);
-	via_print("Simplex only:          %10s%20s",
-		(c & 0x80) ? "yes" : "no", (c & 0x8000) ? "yes" : "no");
-
-	via_print("Cable Type:            %10s%20s",
-		(via_80w & 1) ? "80w" : "40w", (via_80w & 2) ? "80w" : "40w");
-
-	via_print("-------------------drive0----drive1"
-		"----drive2----drive3-----");
-
-	pci_read_config_byte(dev, VIA_ADDRESS_SETUP, &t);
-	pci_read_config_dword(dev, VIA_DRIVE_TIMING, &v);
-	pci_read_config_word(dev, VIA_8BIT_TIMING, &w);
-
-	if (via_config->flags & VIA_UDMA)
-		pci_read_config_dword(dev, VIA_UDMA_TIMING, &u);
-	else u = 0;
-
-	for (i = 0; i < 4; i++) {
-
-		setup[i]     = ((t >> ((3 - i) << 1)) & 0x3) + 1;
-		recover8b[i] = ((w >> ((1 - (i >> 1)) << 3)) & 0xf) + 1;
-		active8b[i]  = ((w >> (((1 - (i >> 1)) << 3) + 4)) & 0xf) + 1;
-		active[i]    = ((v >> (((3 - i) << 3) + 4)) & 0xf) + 1;
-		recover[i]   = ((v >> ((3 - i) << 3)) & 0xf) + 1;
-		udma[i]      = ((u >> ((3 - i) << 3)) & 0x7) + 2;
-		umul[i]      = ((u >> (((3 - i) & 2) << 3)) & 0x8) ? 1 : 2;
-		uen[i]       = ((u >> ((3 - i) << 3)) & 0x20);
-		den[i]       = (c & ((i & 1) ? 0x40 : 0x20) << ((i & 2) << 2));
-
-		speed[i] = 2 * via_clock / (active[i] + recover[i]);
-		cycle[i] = 1000000 * (active[i] + recover[i]) / via_clock;
-
-		if (!uen[i] || !den[i])
-			continue;
-
-		switch (via_config->flags & VIA_UDMA) {
-
-			case VIA_UDMA_33:
-				speed[i] = 2 * via_clock / udma[i];
-				cycle[i] = 1000000 * udma[i] / via_clock;
-				break;
-
-			case VIA_UDMA_66:
-				speed[i] = 4 * via_clock / (udma[i] * umul[i]);
-				cycle[i] = 500000 * (udma[i] * umul[i]) / via_clock;
-				break;
-
-			case VIA_UDMA_100:
-				speed[i] = 6 * via_clock / udma[i];
-				cycle[i] = 333333 * udma[i] / via_clock;
-				break;
-
-			case VIA_UDMA_133:
-				speed[i] = 8 * via_clock / udma[i];
-				cycle[i] = 250000 * udma[i] / via_clock;
-				break;
-		}
-	}
-
-	via_print_drive("Transfer Mode: ", "%10s",
-		den[i] ? (uen[i] ? "UDMA" : "DMA") : "PIO");
-
-	via_print_drive("Address Setup: ", "%8dns",
-		1000000 * setup[i] / via_clock);
-	via_print_drive("Cmd Active:    ", "%8dns",
-		1000000 * active8b[i] / via_clock);
-	via_print_drive("Cmd Recovery:  ", "%8dns",
-		1000000 * recover8b[i] / via_clock);
-	via_print_drive("Data Active:   ", "%8dns",
-		1000000 * active[i] / via_clock);
-	via_print_drive("Data Recovery: ", "%8dns",
-		1000000 * recover[i] / via_clock);
-	via_print_drive("Cycle Time:    ", "%8dns",
-		cycle[i]);
-	via_print_drive("Transfer Rate: ", "%4d.%dMB/s",
-		speed[i] / 1000, speed[i] / 100 % 10);
-
-	/* hoping it is less than 4K... */
-	len = (p - buffer) - offset;
-	*addr = buffer + offset;
-
-	return len > count ? count : len;
-}
-
-#endif /* DISPLAY_VIA_TIMINGS && CONFIG_PROC_FS */
+	struct via_isa_bridge *via_config;
+	unsigned int via_80w;
+};
 
 /**
  *	via_set_speed			-	write timing registers
@@ -289,11 +118,13 @@ static int via_get_info(char *buffer, char **addr, off_t offset, int count)
  *	via_set_speed writes timing values to the chipset registers
  */
 
-static void via_set_speed(struct pci_dev *dev, u8 dn, struct ide_timing *timing)
+static void via_set_speed(ide_hwif_t *hwif, u8 dn, struct ide_timing *timing)
 {
+	struct pci_dev *dev = hwif->pci_dev;
+	struct via82cxxx_dev *vdev = ide_get_hwifdata(hwif);
 	u8 t;
 
-	if (~via_config->flags & VIA_BAD_AST) {
+	if (~vdev->via_config->flags & VIA_BAD_AST) {
 		pci_read_config_byte(dev, VIA_ADDRESS_SETUP, &t);
 		t = (t & ~(3 << ((3 - dn) << 1))) | ((FIT(timing->setup, 1, 4) - 1) << ((3 - dn) << 1));
 		pci_write_config_byte(dev, VIA_ADDRESS_SETUP, t);
@@ -305,7 +136,7 @@ static void via_set_speed(struct pci_dev *dev, u8 dn, struct ide_timing *timing)
 	pci_write_config_byte(dev, VIA_DRIVE_TIMING + (3 - dn),
 		((FIT(timing->active, 1, 16) - 1) << 4) | (FIT(timing->recover, 1, 16) - 1));
 
-	switch (via_config->flags & VIA_UDMA) {
+	switch (vdev->via_config->flags & VIA_UDMA) {
 		case VIA_UDMA_33:  t = timing->udma ? (0xe0 | (FIT(timing->udma, 2, 5) - 2)) : 0x03; break;
 		case VIA_UDMA_66:  t = timing->udma ? (0xe8 | (FIT(timing->udma, 2, 9) - 2)) : 0x0f; break;
 		case VIA_UDMA_100: t = timing->udma ? (0xe0 | (FIT(timing->udma, 2, 9) - 2)) : 0x07; break;
@@ -329,6 +160,7 @@ static void via_set_speed(struct pci_dev *dev, u8 dn, struct ide_timing *timing)
 static int via_set_drive(ide_drive_t *drive, u8 speed)
 {
 	ide_drive_t *peer = HWIF(drive)->drives + (~drive->dn & 1);
+	struct via82cxxx_dev *vdev = ide_get_hwifdata(drive->hwif);
 	struct ide_timing t, p;
 	unsigned int T, UT;
 
@@ -337,7 +169,7 @@ static int via_set_drive(ide_drive_t *drive, u8 speed)
 
 	T = 1000000000 / via_clock;
 
-	switch (via_config->flags & VIA_UDMA) {
+	switch (vdev->via_config->flags & VIA_UDMA) {
 		case VIA_UDMA_33:   UT = T;   break;
 		case VIA_UDMA_66:   UT = T/2; break;
 		case VIA_UDMA_100:  UT = T/3; break;
@@ -352,7 +184,7 @@ static int via_set_drive(ide_drive_t *drive, u8 speed)
 		ide_timing_merge(&p, &t, &t, IDE_TIMING_8BIT);
 	}
 
-	via_set_speed(HWIF(drive)->pci_dev, drive->dn, &t);
+	via_set_speed(HWIF(drive), drive->dn, &t);
 
 	if (!drive->init_speed)
 		drive->init_speed = speed;
@@ -390,20 +222,41 @@ static void via82cxxx_tune_drive(ide_drive_t *drive, u8 pio)
  
 static int via82cxxx_ide_dma_check (ide_drive_t *drive)
 {
-	u16 w80 = HWIF(drive)->udma_four;
+	ide_hwif_t *hwif = HWIF(drive);
+	struct via82cxxx_dev *vdev = ide_get_hwifdata(hwif);
+	u16 w80 = hwif->udma_four;
 
 	u16 speed = ide_find_best_mode(drive,
 		XFER_PIO | XFER_EPIO | XFER_SWDMA | XFER_MWDMA |
-		(via_config->flags & VIA_UDMA ? XFER_UDMA : 0) |
-		(w80 && (via_config->flags & VIA_UDMA) >= VIA_UDMA_66 ? XFER_UDMA_66 : 0) |
-		(w80 && (via_config->flags & VIA_UDMA) >= VIA_UDMA_100 ? XFER_UDMA_100 : 0) |
-		(w80 && (via_config->flags & VIA_UDMA) >= VIA_UDMA_133 ? XFER_UDMA_133 : 0));
+		(vdev->via_config->flags & VIA_UDMA ? XFER_UDMA : 0) |
+		(w80 && (vdev->via_config->flags & VIA_UDMA) >= VIA_UDMA_66 ? XFER_UDMA_66 : 0) |
+		(w80 && (vdev->via_config->flags & VIA_UDMA) >= VIA_UDMA_100 ? XFER_UDMA_100 : 0) |
+		(w80 && (vdev->via_config->flags & VIA_UDMA) >= VIA_UDMA_133 ? XFER_UDMA_133 : 0));
 
 	via_set_drive(drive, speed);
 
 	if (drive->autodma && (speed & XFER_MODE) != XFER_PIO)
-		return HWIF(drive)->ide_dma_on(drive);
-	return HWIF(drive)->ide_dma_off_quietly(drive);
+		return hwif->ide_dma_on(drive);
+	return hwif->ide_dma_off_quietly(drive);
+}
+
+static struct via_isa_bridge *via_config_find(struct pci_dev **isa)
+{
+	struct via_isa_bridge *via_config;
+	u8 t;
+
+	for (via_config = via_isa_bridges; via_config->id; via_config++)
+		if ((*isa = pci_find_device(PCI_VENDOR_ID_VIA +
+			!!(via_config->flags & VIA_BAD_ID),
+			via_config->id, NULL))) {
+
+			pci_read_config_byte(*isa, PCI_REVISION_ID, &t);
+			if (t >= via_config->rev_min &&
+			    t <= via_config->rev_max)
+				break;
+		}
+
+	return via_config;
 }
 
 /**
@@ -418,82 +271,28 @@ static int via82cxxx_ide_dma_check (ide_drive_t *drive)
 static unsigned int __devinit init_chipset_via82cxxx(struct pci_dev *dev, const char *name)
 {
 	struct pci_dev *isa = NULL;
+	struct via_isa_bridge *via_config;
 	u8 t, v;
 	unsigned int u;
-	int i;
 
 	/*
 	 * Find the ISA bridge to see how good the IDE is.
 	 */
-
-	for (via_config = via_isa_bridges; via_config->id; via_config++)
-		if ((isa = pci_find_device(PCI_VENDOR_ID_VIA +
-			!!(via_config->flags & VIA_BAD_ID),
-			via_config->id, NULL))) {
-
-			pci_read_config_byte(isa, PCI_REVISION_ID, &t);
-			if (t >= via_config->rev_min &&
-			    t <= via_config->rev_max)
-				break;
-		}
-
+	via_config = via_config_find(&isa);
 	if (!via_config->id) {
 		printk(KERN_WARNING "VP_IDE: Unknown VIA SouthBridge, disabling DMA.\n");
 		return -ENODEV;
 	}
 
 	/*
-	 * Check 80-wire cable presence and setup Clk66.
+	 * Setup or disable Clk66 if appropriate
 	 */
 
-	switch (via_config->flags & VIA_UDMA) {
-
-		case VIA_UDMA_66:
-			/* Enable Clk66 */
-			pci_read_config_dword(dev, VIA_UDMA_TIMING, &u);
-			pci_write_config_dword(dev, VIA_UDMA_TIMING, u|0x80008);
-			for (i = 24; i >= 0; i -= 8)
-				if (((u >> (i & 16)) & 8) &&
-				    ((u >> i) & 0x20) &&
-				     (((u >> i) & 7) < 2)) {
-					/*
-					 * 2x PCI clock and
-					 * UDMA w/ < 3T/cycle
-					 */
-					via_80w |= (1 << (1 - (i >> 4)));
-				}
-			break;
-
-		case VIA_UDMA_100:
-			pci_read_config_dword(dev, VIA_UDMA_TIMING, &u);
-			for (i = 24; i >= 0; i -= 8)
-				if (((u >> i) & 0x10) ||
-				    (((u >> i) & 0x20) &&
-				     (((u >> i) & 7) < 4))) {
-					/* BIOS 80-wire bit or
-					 * UDMA w/ < 60ns/cycle
-					 */
-					via_80w |= (1 << (1 - (i >> 4)));
-				}
-			break;
-
-		case VIA_UDMA_133:
-			pci_read_config_dword(dev, VIA_UDMA_TIMING, &u);
-			for (i = 24; i >= 0; i -= 8)
-				if (((u >> i) & 0x10) ||
-				    (((u >> i) & 0x20) &&
-				     (((u >> i) & 7) < 6))) {
-					/* BIOS 80-wire bit or
-					 * UDMA w/ < 60ns/cycle
-					 */
-					via_80w |= (1 << (1 - (i >> 4)));
-				}
-			break;
-
-	}
-
-	/* Disable Clk66 */
-	if (via_config->flags & VIA_BAD_CLK66) {
+	if ((via_config->flags & VIA_UDMA) == VIA_UDMA_66) {
+		/* Enable Clk66 */
+		pci_read_config_dword(dev, VIA_UDMA_TIMING, &u);
+		pci_write_config_dword(dev, VIA_UDMA_TIMING, u|0x80008);
+	} else if (via_config->flags & VIA_BAD_CLK66) {
 		/* Would cause trouble on 596a and 686 */
 		pci_read_config_dword(dev, VIA_UDMA_TIMING, &u);
 		pci_write_config_dword(dev, VIA_UDMA_TIMING, u & ~0x80008);
@@ -560,26 +359,78 @@ static unsigned int __devinit init_chipset_via82cxxx(struct pci_dev *dev, const
 		via_dma[via_config->flags & VIA_UDMA],
 		pci_name(dev));
 
-	/*
-	 * Setup /proc/ide/via entry.
-	 */
+	return 0;
+}
+
+/*
+ * Check and handle 80-wire cable presence
+ */
+static void __devinit via_cable_detect(struct pci_dev *dev, struct via82cxxx_dev *vdev)
+{
+	unsigned int u;
+	int i;
+	pci_read_config_dword(dev, VIA_UDMA_TIMING, &u);
+
+	switch (vdev->via_config->flags & VIA_UDMA) {
+
+		case VIA_UDMA_66:
+			for (i = 24; i >= 0; i -= 8)
+				if (((u >> (i & 16)) & 8) &&
+				    ((u >> i) & 0x20) &&
+				     (((u >> i) & 7) < 2)) {
+					/*
+					 * 2x PCI clock and
+					 * UDMA w/ < 3T/cycle
+					 */
+					vdev->via_80w |= (1 << (1 - (i >> 4)));
+				}
+			break;
+
+		case VIA_UDMA_100:
+			for (i = 24; i >= 0; i -= 8)
+				if (((u >> i) & 0x10) ||
+				    (((u >> i) & 0x20) &&
+				     (((u >> i) & 7) < 4))) {
+					/* BIOS 80-wire bit or
+					 * UDMA w/ < 60ns/cycle
+					 */
+					vdev->via_80w |= (1 << (1 - (i >> 4)));
+				}
+			break;
+
+		case VIA_UDMA_133:
+			for (i = 24; i >= 0; i -= 8)
+				if (((u >> i) & 0x10) ||
+				    (((u >> i) & 0x20) &&
+				     (((u >> i) & 7) < 6))) {
+					/* BIOS 80-wire bit or
+					 * UDMA w/ < 60ns/cycle
+					 */
+					vdev->via_80w |= (1 << (1 - (i >> 4)));
+				}
+			break;
 
-#if defined(DISPLAY_VIA_TIMINGS) && defined(CONFIG_PROC_FS)
-	if (!via_proc) {
-		via_base = pci_resource_start(dev, 4);
-		bmide_dev = dev;
-		isa_dev = isa;
-		ide_pci_create_host_proc("via", via_get_info);
-		via_proc = 1;
 	}
-#endif /* DISPLAY_VIA_TIMINGS && CONFIG_PROC_FS */
-	return 0;
 }
 
 static void __devinit init_hwif_via82cxxx(ide_hwif_t *hwif)
 {
+	struct via82cxxx_dev *vdev = kmalloc(sizeof(struct via82cxxx_dev),
+		GFP_KERNEL);
+	struct pci_dev *isa = NULL;
 	int i;
 
+	if (vdev == NULL) {
+		printk(KERN_ERR "VP_IDE: out of memory :(\n");
+		return;
+	}
+
+	memset(vdev, 0, sizeof(struct via82cxxx_dev));
+	ide_set_hwifdata(hwif, vdev);
+
+	vdev->via_config = via_config_find(&isa);
+	via_cable_detect(hwif->pci_dev, vdev);
+
 	hwif->autodma = 0;
 
 	hwif->tuneproc = &via82cxxx_tune_drive;
@@ -594,7 +445,7 @@ static void __devinit init_hwif_via82cxxx(ide_hwif_t *hwif)
 
 	for (i = 0; i < 2; i++) {
 		hwif->drives[i].io_32bit = 1;
-		hwif->drives[i].unmask = (via_config->flags & VIA_NO_UNMASK) ? 0 : 1;
+		hwif->drives[i].unmask = (vdev->via_config->flags & VIA_NO_UNMASK) ? 0 : 1;
 		hwif->drives[i].autotune = 1;
 		hwif->drives[i].dn = hwif->channel * 2 + i;
 	}
@@ -608,7 +459,7 @@ static void __devinit init_hwif_via82cxxx(ide_hwif_t *hwif)
 	hwif->swdma_mask = 0x07;
 
 	if (!hwif->udma_four)
-		hwif->udma_four = (via_80w >> hwif->channel) & 1;
+		hwif->udma_four = (vdev->via_80w >> hwif->channel) & 1;
 	hwif->ide_dma_check = &via82cxxx_ide_dma_check;
 	if (!noautodma)
 		hwif->autodma = 1;