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Subject[PATCH 68/68] via82cxxx: convert to ide2libata
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Subject: [PATCH] via82cxxx: convert to ide2libata

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
drivers/ata/pata_via.h | 8 -
drivers/ide/via82cxxx.c | 261 ++++--------------------------------------------
2 files changed, 28 insertions(+), 241 deletions(-)

Index: b/drivers/ata/pata_via.h
===================================================================
--- a/drivers/ata/pata_via.h
+++ b/drivers/ata/pata_via.h
@@ -1,5 +1,4 @@

-#ifdef __LINUX_LIBATA_H__
enum {
VIA_BAD_PREQ = 0x01, /* Crashes if PREQ# till DDACK# set */
VIA_BAD_CLK66 = 0x02, /* 66 MHz clock doesn't work correctly */
@@ -12,7 +11,7 @@ enum {
};

enum {
- VIA_IDFLAG_SINGLE = (1 << 0), /* single channel controller */
+ VIA_IDFLAG_SINGLE = (1 << 1), /* single channel controller */
};

/*
@@ -57,7 +56,6 @@ static const struct via_isa_bridge {
{ "vtxxxx", PCI_DEVICE_ID_VIA_ANON, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
{ NULL }
};
-#endif

#include <linux/dmi.h>

@@ -88,7 +86,6 @@ static int via_cable_override(struct pci
return 0;
}

-#ifdef __LINUX_LIBATA_H__
/**
* via_do_set_mode - set transfer mode data
* @ap: ATA interface
@@ -110,7 +107,9 @@ static void via_do_set_mode(struct ata_p
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
struct ata_device *peer = ata_dev_pair(adev);
struct ata_timing t, p;
+#ifndef __IDE2LIBATA
static int via_clock = 33333; /* Bus clock in kHZ */
+#endif
unsigned long T = 1000000000 / via_clock;
unsigned long UT = T;
int ut;
@@ -268,4 +267,3 @@ static void via_fixup(struct pci_dev *pd
pci_write_config_dword(pdev, 0x50, timing);
}
}
-#endif
Index: b/drivers/ide/via82cxxx.c
===================================================================
--- a/drivers/ide/via82cxxx.c
+++ b/drivers/ide/via82cxxx.c
@@ -36,177 +36,20 @@

#define DRV_NAME "via82cxxx"

-#define VIA_IDE_ENABLE 0x40
-#define VIA_IDE_CONFIG 0x41
-#define VIA_FIFO_CONFIG 0x43
-#define VIA_MISC_1 0x44
-#define VIA_MISC_2 0x45
-#define VIA_MISC_3 0x46
-#define VIA_DRIVE_TIMING 0x48
-#define VIA_8BIT_TIMING 0x4e
-#define VIA_ADDRESS_SETUP 0x4c
-#define VIA_UDMA_TIMING 0x50
-
-#define VIA_BAD_PREQ 0x01 /* Crashes if PREQ# till DDACK# set */
-#define VIA_BAD_CLK66 0x02 /* 66 MHz clock doesn't work correctly */
-#define VIA_SET_FIFO 0x04 /* Needs to have FIFO split set */
-#define VIA_NO_UNMASK 0x08 /* Doesn't work with IRQ unmasking on */
-#define VIA_BAD_ID 0x10 /* Has wrong vendor ID (0x1107) */
-#define VIA_BAD_AST 0x20 /* Don't touch Address Setup Timing */
-#define VIA_SATA_PATA 0x80 /* SATA/PATA combined configuration */
-
-enum {
- VIA_IDFLAG_SINGLE = (1 << 1), /* single channel controller */
-};
-
-/*
- * VIA SouthBridge chips.
- */
-
-static struct via_isa_bridge {
- char *name;
- u16 id;
- u8 rev_min;
- u8 rev_max;
- u8 udma_mask;
- u8 flags;
-} via_isa_bridges[] = {
- { "vx855", PCI_DEVICE_ID_VIA_VX855, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST | VIA_SATA_PATA },
- { "vx800", PCI_DEVICE_ID_VIA_VX800, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST | VIA_SATA_PATA },
- { "cx700", PCI_DEVICE_ID_VIA_CX700, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST | VIA_SATA_PATA },
- { "vt8261", PCI_DEVICE_ID_VIA_8261, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
- { "vt8237s", PCI_DEVICE_ID_VIA_8237S, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
- { "vt6410", PCI_DEVICE_ID_VIA_6410, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
- { "vt6415", PCI_DEVICE_ID_VIA_6410, 0x00, 0xff, ATA_UDMA6, VIA_BAD_AST },
- { "vt8251", PCI_DEVICE_ID_VIA_8251, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
- { "vt8237", PCI_DEVICE_ID_VIA_8237, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
- { "vt8237a", PCI_DEVICE_ID_VIA_8237A, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
- { "vt8235", PCI_DEVICE_ID_VIA_8235, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
- { "vt8233a", PCI_DEVICE_ID_VIA_8233A, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
- { "vt8233c", PCI_DEVICE_ID_VIA_8233C_0, 0x00, 0x2f, ATA_UDMA5, },
- { "vt8233", PCI_DEVICE_ID_VIA_8233_0, 0x00, 0x2f, ATA_UDMA5, },
- { "vt8231", PCI_DEVICE_ID_VIA_8231, 0x00, 0x2f, ATA_UDMA5, },
- { "vt82c686b", PCI_DEVICE_ID_VIA_82C686, 0x40, 0x4f, ATA_UDMA5, },
- { "vt82c686a", PCI_DEVICE_ID_VIA_82C686, 0x10, 0x2f, ATA_UDMA4, },
- { "vt82c686", PCI_DEVICE_ID_VIA_82C686, 0x00, 0x0f, ATA_UDMA2, VIA_BAD_CLK66 },
- { "vt82c596b", PCI_DEVICE_ID_VIA_82C596, 0x10, 0x2f, ATA_UDMA4, },
- { "vt82c596a", PCI_DEVICE_ID_VIA_82C596, 0x00, 0x0f, ATA_UDMA2, VIA_BAD_CLK66 },
- { "vt82c586b", PCI_DEVICE_ID_VIA_82C586_0, 0x47, 0x4f, ATA_UDMA2, VIA_SET_FIFO },
- { "vt82c586b", PCI_DEVICE_ID_VIA_82C586_0, 0x40, 0x46, ATA_UDMA2, VIA_SET_FIFO | VIA_BAD_PREQ },
- { "vt82c586b", PCI_DEVICE_ID_VIA_82C586_0, 0x30, 0x3f, ATA_UDMA2, VIA_SET_FIFO },
- { "vt82c586a", PCI_DEVICE_ID_VIA_82C586_0, 0x20, 0x2f, ATA_UDMA2, VIA_SET_FIFO },
- { "vt82c586", PCI_DEVICE_ID_VIA_82C586_0, 0x00, 0x0f, 0x00, VIA_SET_FIFO },
- { "vt82c576", PCI_DEVICE_ID_VIA_82C576, 0x00, 0x2f, 0x00, VIA_SET_FIFO | VIA_NO_UNMASK },
- { "vt82c576", PCI_DEVICE_ID_VIA_82C576, 0x00, 0x2f, 0x00, VIA_SET_FIFO | VIA_NO_UNMASK | VIA_BAD_ID },
- { "vtxxxx", PCI_DEVICE_ID_VIA_ANON, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
- { NULL }
-};
-
static unsigned int via_clock;
static char *via_dma[] = { "16", "25", "33", "44", "66", "100", "133" };

+#include <linux/ide2libata.h>
+#include "../ata/pata_via.h"
+
struct via82cxxx_dev
{
- struct via_isa_bridge *via_config;
+ const struct via_isa_bridge *via_config;
unsigned int via_80w;
u8 cached_device[2];
};

/**
- * via_set_speed - write timing registers
- * @dev: PCI device
- * @dn: device
- * @timing: IDE timing data to use
- *
- * via_set_speed writes timing values to the chipset registers
- */
-
-static void via_set_speed(ide_hwif_t *hwif, u8 dn, struct ata_timing *timing)
-{
- struct pci_dev *dev = to_pci_dev(hwif->dev);
- struct ide_host *host = pci_get_drvdata(dev);
- struct via82cxxx_dev *vdev = host->host_priv;
- u8 t;
-
- if (~vdev->via_config->flags & VIA_BAD_AST) {
- pci_read_config_byte(dev, VIA_ADDRESS_SETUP, &t);
- t = (t & ~(3 << ((3 - dn) << 1))) | ((clamp_val(timing->setup, 1, 4) - 1) << ((3 - dn) << 1));
- pci_write_config_byte(dev, VIA_ADDRESS_SETUP, t);
- }
-
- pci_write_config_byte(dev, VIA_8BIT_TIMING + (1 - (dn >> 1)),
- ((clamp_val(timing->act8b, 1, 16) - 1) << 4) | (clamp_val(timing->rec8b, 1, 16) - 1));
-
- pci_write_config_byte(dev, VIA_DRIVE_TIMING + (3 - dn),
- ((clamp_val(timing->active, 1, 16) - 1) << 4) | (clamp_val(timing->recover, 1, 16) - 1));
-
- switch (vdev->via_config->udma_mask) {
- case ATA_UDMA2: t = timing->udma ? (0xe0 | (clamp_val(timing->udma, 2, 5) - 2)) : 0x03; break;
- case ATA_UDMA4: t = timing->udma ? (0xe8 | (clamp_val(timing->udma, 2, 9) - 2)) : 0x0f; break;
- case ATA_UDMA5: t = timing->udma ? (0xe0 | (clamp_val(timing->udma, 2, 9) - 2)) : 0x07; break;
- case ATA_UDMA6: t = timing->udma ? (0xe0 | (clamp_val(timing->udma, 2, 9) - 2)) : 0x07; break;
- }
-
- /* Set UDMA unless device is not UDMA capable */
- if (vdev->via_config->udma_mask) {
- u8 udma_etc;
-
- pci_read_config_byte(dev, VIA_UDMA_TIMING + 3 - dn, &udma_etc);
-
- /* clear transfer mode bit */
- udma_etc &= ~0x20;
-
- if (timing->udma) {
- /* preserve 80-wire cable detection bit */
- udma_etc &= 0x10;
- udma_etc |= t;
- }
-
- pci_write_config_byte(dev, VIA_UDMA_TIMING + 3 - dn, udma_etc);
- }
-}
-
-/**
- * via_set_drive - configure transfer mode
- * @hwif: port
- * @drive: Drive to set up
- *
- * via_set_drive() computes timing values configures the chipset to
- * a desired transfer mode. It also can be called by upper layers.
- */
-
-static void via_set_drive(ide_hwif_t *hwif, ide_drive_t *drive)
-{
- ide_drive_t *peer = ide_get_pair_dev(drive);
- struct pci_dev *dev = to_pci_dev(hwif->dev);
- struct ide_host *host = pci_get_drvdata(dev);
- struct via82cxxx_dev *vdev = host->host_priv;
- struct ata_timing t, p;
- unsigned int T, UT;
- const u8 speed = drive->dma_mode;
-
- T = 1000000000 / via_clock;
-
- switch (vdev->via_config->udma_mask) {
- case ATA_UDMA2: UT = T; break;
- case ATA_UDMA4: UT = T/2; break;
- case ATA_UDMA5: UT = T/3; break;
- case ATA_UDMA6: UT = T/4; break;
- default: UT = T;
- }
-
- ata_timing_compute(drive->id, speed, drive->pio_mode, &t, T, UT);
-
- if (peer) {
- ata_timing_compute(peer->id, peer->pio_mode,
- peer->pio_mode, &p, T, UT);
- ata_timing_merge(&p, &t, &t, ATA_TIMING_8BIT);
- }
-
- via_set_speed(hwif, drive->dn, &t);
-}
-
-/**
* via_set_pio_mode - set host controller for PIO mode
* @hwif: port
* @drive: drive
@@ -216,8 +59,20 @@ static void via_set_drive(ide_hwif_t *hw

static void via_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
{
- drive->dma_mode = drive->pio_mode;
- via_set_drive(hwif, drive);
+ const struct via_isa_bridge *config = drive->hwif->host->host_priv;
+ int set_ast = (config->flags & VIA_BAD_AST) ? 0 : 1;
+
+ via_do_set_mode(hwif, drive, drive->pio_mode, set_ast,
+ config->udma_mask);
+}
+
+static void via_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive)
+{
+ const struct via_isa_bridge *config = drive->hwif->host->host_priv;
+ int set_ast = (config->flags & VIA_BAD_AST) ? 0 : 1;
+
+ via_do_set_mode(hwif, drive, drive->dma_mode, set_ast,
+ config->udma_mask);
}

static u8 via_udma_filter(ide_drive_t *drive)
@@ -238,25 +93,6 @@ static u8 via_udma_filter(ide_drive_t *d
return hwif->ultra_mask;
}

-static struct via_isa_bridge *via_config_find(struct pci_dev **isa)
-{
- struct via_isa_bridge *via_config;
-
- for (via_config = via_isa_bridges;
- via_config->id != PCI_DEVICE_ID_VIA_ANON; via_config++)
- if ((*isa = pci_get_device(PCI_VENDOR_ID_VIA +
- !!(via_config->flags & VIA_BAD_ID),
- via_config->id, NULL))) {
-
- if ((*isa)->revision >= via_config->rev_min &&
- (*isa)->revision <= via_config->rev_max)
- break;
- pci_dev_put(*isa);
- }
-
- return via_config;
-}
-
/*
* Check and handle 80-wire cable presence
*/
@@ -316,60 +152,16 @@ static int init_chipset_via82cxxx(struct
{
struct ide_host *host = pci_get_drvdata(dev);
struct via82cxxx_dev *vdev = host->host_priv;
- struct via_isa_bridge *via_config = vdev->via_config;
- u8 t, v;
u32 u;

- /*
- * Detect cable and configure Clk66
- */
- pci_read_config_dword(dev, VIA_UDMA_TIMING, &u);
-
+ pci_read_config_dword(dev, 0x50, &u);
via_cable_detect(vdev, u);

- if (via_config->udma_mask == ATA_UDMA4) {
- /* Enable Clk66 */
- 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_write_config_dword(dev, VIA_UDMA_TIMING, u & ~0x80008);
- }
-
- /*
- * Check whether interfaces are enabled.
- */
-
- pci_read_config_byte(dev, VIA_IDE_ENABLE, &v);
-
- /*
- * Set up FIFO sizes and thresholds.
- */
-
- pci_read_config_byte(dev, VIA_FIFO_CONFIG, &t);
-
- /* Disable PREQ# till DDACK# */
- if (via_config->flags & VIA_BAD_PREQ) {
- /* Would crash on 586b rev 41 */
- t &= 0x7f;
- }
-
- /* Fix FIFO split between channels */
- if (via_config->flags & VIA_SET_FIFO) {
- t &= (t & 0x9f);
- switch (v & 3) {
- case 2: t |= 0x00; break; /* 16 on primary */
- case 1: t |= 0x60; break; /* 16 on secondary */
- case 3: t |= 0x20; break; /* 8 pri 8 sec */
- }
- }
-
- pci_write_config_byte(dev, VIA_FIFO_CONFIG, t);
+ via_fixup(dev, vdev->via_config);

return 0;
}

-#include "../ata/pata_via.h"
-
static int via82cxxx_cable_detect(ide_hwif_t *hwif)
{
struct pci_dev *pdev = to_pci_dev(hwif->dev);
@@ -390,7 +182,7 @@ static int via82cxxx_cable_detect(ide_hw

static const struct ide_port_ops via_port_ops = {
.set_pio_mode = via_set_pio_mode,
- .set_dma_mode = via_set_drive,
+ .set_dma_mode = via_set_dma_mode,
.cable_detect = via82cxxx_cable_detect,
.udma_filter = via_udma_filter,
};
@@ -466,8 +258,7 @@ static const struct ide_port_info via82c

static int __devinit via_init_one(struct pci_dev *dev, const struct pci_device_id *id)
{
- struct pci_dev *isa = NULL;
- struct via_isa_bridge *via_config;
+ const struct via_isa_bridge *via_config;
struct via82cxxx_dev *vdev;
int rc;
u8 idx = id->driver_data;
@@ -478,19 +269,17 @@ static int __devinit via_init_one(struct
/*
* Find the ISA bridge and check we know what it is.
*/
- via_config = via_config_find(&isa);
+ via_config = via_config_find();

/*
* Print the boot message.
*/
- printk(KERN_INFO DRV_NAME " %s: VIA %s (rev %02x) IDE %sDMA%s\n",
- pci_name(dev), via_config->name, isa->revision,
+ printk(KERN_INFO DRV_NAME " %s: VIA %s IDE %sDMA%s\n",
+ pci_name(dev), via_config->name,
via_config->udma_mask ? "U" : "MW",
via_dma[via_config->udma_mask ?
(fls(via_config->udma_mask) - 1) : 0]);

- pci_dev_put(isa);
-
/*
* Determine system bus clock.
*/

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