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aha/drivers/ide/pci/alim15x3.c
Michael De Backer e11db063d8 [PATCH] alim15x3.c: M5229 (rev c8) support for DMA cd-writer 
Configuration bits are not set properly for DMA on some chipset revisions.
It has already been corrected for M5229 (rev c7) but not for M5229 (rev
c8).  This leads to the bug described at
http://bugzilla.kernel.org/show_bug.cgi?id=5786 (lost interrupt + ide bus
hangs).

Signed-off-by: Michael De Backer <micdb@skynet.be>
Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-13 07:32:14 -07:00

919 lines
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/*
* linux/drivers/ide/pci/alim15x3.c Version 0.17 2003/01/02
*
* Copyright (C) 1998-2000 Michel Aubry, Maintainer
* Copyright (C) 1998-2000 Andrzej Krzysztofowicz, Maintainer
* Copyright (C) 1999-2000 CJ, cjtsai@ali.com.tw, Maintainer
*
* Copyright (C) 1998-2000 Andre Hedrick (andre@linux-ide.org)
* May be copied or modified under the terms of the GNU General Public License
* Copyright (C) 2002 Alan Cox <alan@redhat.com>
* ALi (now ULi M5228) support by Clear Zhang <Clear.Zhang@ali.com.tw>
*
* (U)DMA capable version of ali 1533/1543(C), 1535(D)
*
**********************************************************************
* 9/7/99 --Parts from the above author are included and need to be
* converted into standard interface, once I finish the thought.
*
* Recent changes
* Don't use LBA48 mode on ALi <= 0xC4
* Don't poke 0x79 with a non ALi northbridge
* Don't flip undefined bits on newer chipsets (fix Fujitsu laptop hang)
* Allow UDMA6 on revisions > 0xC4
*
* Documentation
* Chipset documentation available under NDA only
*
*/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/hdreg.h>
#include <linux/ide.h>
#include <linux/init.h>
#include <asm/io.h>
#define DISPLAY_ALI_TIMINGS
/*
* ALi devices are not plug in. Otherwise these static values would
* need to go. They ought to go away anyway
*/
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)
#include <linux/stat.h>
#include <linux/proc_fs.h>
static u8 ali_proc = 0;
static struct pci_dev *bmide_dev;
static char *fifo[4] = {
"FIFO Off",
"FIFO On ",
"DMA mode",
"PIO mode" };
static char *udmaT[8] = {
"1.5T",
" 2T",
"2.5T",
" 3T",
"3.5T",
" 4T",
" 6T",
" 8T"
};
static char *channel_status[8] = {
"OK ",
"busy ",
"DRQ ",
"DRQ busy ",
"error ",
"error busy ",
"error DRQ ",
"error DRQ busy"
};
/**
* ali_get_info - generate proc file for ALi IDE
* @buffer: buffer to fill
* @addr: address of user start in buffer
* @offset: offset into 'file'
* @count: buffer count
*
* Walks the Ali devices and outputs summary data on the tuning and
* anything else that will help with debugging
*/
static int ali_get_info (char *buffer, char **addr, off_t offset, int count)
{
unsigned long bibma;
u8 reg53h, reg5xh, reg5yh, reg5xh1, reg5yh1, c0, c1, rev, tmp;
char *q, *p = buffer;
/* fetch rev. */
pci_read_config_byte(bmide_dev, 0x08, &rev);
if (rev >= 0xc1) /* M1543C or newer */
udmaT[7] = " ???";
else
fifo[3] = " ??? ";
/* first fetch bibma: */
bibma = pci_resource_start(bmide_dev, 4);
/*
* at that point bibma+0x2 et bibma+0xa are byte
* registers to investigate:
*/
c0 = inb(bibma + 0x02);
c1 = inb(bibma + 0x0a);
p += sprintf(p,
"\n Ali M15x3 Chipset.\n");
p += sprintf(p,
" ------------------\n");
pci_read_config_byte(bmide_dev, 0x78, &reg53h);
p += sprintf(p, "PCI Clock: %d.\n", reg53h);
pci_read_config_byte(bmide_dev, 0x53, &reg53h);
p += sprintf(p,
"CD_ROM FIFO:%s, CD_ROM DMA:%s\n",
(reg53h & 0x02) ? "Yes" : "No ",
(reg53h & 0x01) ? "Yes" : "No " );
pci_read_config_byte(bmide_dev, 0x74, &reg53h);
p += sprintf(p,
"FIFO Status: contains %d Words, runs%s%s\n\n",
(reg53h & 0x3f),
(reg53h & 0x40) ? " OVERWR" : "",
(reg53h & 0x80) ? " OVERRD." : "." );
p += sprintf(p,
"-------------------primary channel"
"-------------------secondary channel"
"---------\n\n");
pci_read_config_byte(bmide_dev, 0x09, &reg53h);
p += sprintf(p,
"channel status: %s"
" %s\n",
(reg53h & 0x20) ? "On " : "Off",
(reg53h & 0x10) ? "On " : "Off" );
p += sprintf(p,
"both channels togth: %s"
" %s\n",
(c0&0x80) ? "No " : "Yes",
(c1&0x80) ? "No " : "Yes" );
pci_read_config_byte(bmide_dev, 0x76, &reg53h);
p += sprintf(p,
"Channel state: %s %s\n",
channel_status[reg53h & 0x07],
channel_status[(reg53h & 0x70) >> 4] );
pci_read_config_byte(bmide_dev, 0x58, &reg5xh);
pci_read_config_byte(bmide_dev, 0x5c, &reg5yh);
p += sprintf(p,
"Add. Setup Timing: %dT"
" %dT\n",
(reg5xh & 0x07) ? (reg5xh & 0x07) : 8,
(reg5yh & 0x07) ? (reg5yh & 0x07) : 8 );
pci_read_config_byte(bmide_dev, 0x59, &reg5xh);
pci_read_config_byte(bmide_dev, 0x5d, &reg5yh);
p += sprintf(p,
"Command Act. Count: %dT"
" %dT\n"
"Command Rec. Count: %dT"
" %dT\n\n",
(reg5xh & 0x70) ? ((reg5xh & 0x70) >> 4) : 8,
(reg5yh & 0x70) ? ((reg5yh & 0x70) >> 4) : 8,
(reg5xh & 0x0f) ? (reg5xh & 0x0f) : 16,
(reg5yh & 0x0f) ? (reg5yh & 0x0f) : 16 );
p += sprintf(p,
"----------------drive0-----------drive1"
"------------drive0-----------drive1------\n\n");
p += sprintf(p,
"DMA enabled: %s %s"
" %s %s\n",
(c0&0x20) ? "Yes" : "No ",
(c0&0x40) ? "Yes" : "No ",
(c1&0x20) ? "Yes" : "No ",
(c1&0x40) ? "Yes" : "No " );
pci_read_config_byte(bmide_dev, 0x54, &reg5xh);
pci_read_config_byte(bmide_dev, 0x55, &reg5yh);
q = "FIFO threshold: %2d Words %2d Words"
" %2d Words %2d Words\n";
if (rev < 0xc1) {
if ((rev == 0x20) &&
(pci_read_config_byte(bmide_dev, 0x4f, &tmp), (tmp &= 0x20))) {
p += sprintf(p, q, 8, 8, 8, 8);
} else {
p += sprintf(p, q,
(reg5xh & 0x03) + 12,
((reg5xh & 0x30)>>4) + 12,
(reg5yh & 0x03) + 12,
((reg5yh & 0x30)>>4) + 12 );
}
} else {
int t1 = (tmp = (reg5xh & 0x03)) ? (tmp << 3) : 4;
int t2 = (tmp = ((reg5xh & 0x30)>>4)) ? (tmp << 3) : 4;
int t3 = (tmp = (reg5yh & 0x03)) ? (tmp << 3) : 4;
int t4 = (tmp = ((reg5yh & 0x30)>>4)) ? (tmp << 3) : 4;
p += sprintf(p, q, t1, t2, t3, t4);
}
#if 0
p += sprintf(p,
"FIFO threshold: %2d Words %2d Words"
" %2d Words %2d Words\n",
(reg5xh & 0x03) + 12,
((reg5xh & 0x30)>>4) + 12,
(reg5yh & 0x03) + 12,
((reg5yh & 0x30)>>4) + 12 );
#endif
p += sprintf(p,
"FIFO mode: %s %s %s %s\n",
fifo[((reg5xh & 0x0c) >> 2)],
fifo[((reg5xh & 0xc0) >> 6)],
fifo[((reg5yh & 0x0c) >> 2)],
fifo[((reg5yh & 0xc0) >> 6)] );
pci_read_config_byte(bmide_dev, 0x5a, &reg5xh);
pci_read_config_byte(bmide_dev, 0x5b, &reg5xh1);
pci_read_config_byte(bmide_dev, 0x5e, &reg5yh);
pci_read_config_byte(bmide_dev, 0x5f, &reg5yh1);
p += sprintf(p,/*
"------------------drive0-----------drive1"
"------------drive0-----------drive1------\n")*/
"Dt RW act. Cnt %2dT %2dT"
" %2dT %2dT\n"
"Dt RW rec. Cnt %2dT %2dT"
" %2dT %2dT\n\n",
(reg5xh & 0x70) ? ((reg5xh & 0x70) >> 4) : 8,
(reg5xh1 & 0x70) ? ((reg5xh1 & 0x70) >> 4) : 8,
(reg5yh & 0x70) ? ((reg5yh & 0x70) >> 4) : 8,
(reg5yh1 & 0x70) ? ((reg5yh1 & 0x70) >> 4) : 8,
(reg5xh & 0x0f) ? (reg5xh & 0x0f) : 16,
(reg5xh1 & 0x0f) ? (reg5xh1 & 0x0f) : 16,
(reg5yh & 0x0f) ? (reg5yh & 0x0f) : 16,
(reg5yh1 & 0x0f) ? (reg5yh1 & 0x0f) : 16 );
p += sprintf(p,
"-----------------------------------UDMA Timings"
"--------------------------------\n\n");
pci_read_config_byte(bmide_dev, 0x56, &reg5xh);
pci_read_config_byte(bmide_dev, 0x57, &reg5yh);
p += sprintf(p,
"UDMA: %s %s"
" %s %s\n"
"UDMA timings: %s %s"
" %s %s\n\n",
(reg5xh & 0x08) ? "OK" : "No",
(reg5xh & 0x80) ? "OK" : "No",
(reg5yh & 0x08) ? "OK" : "No",
(reg5yh & 0x80) ? "OK" : "No",
udmaT[(reg5xh & 0x07)],
udmaT[(reg5xh & 0x70) >> 4],
udmaT[reg5yh & 0x07],
udmaT[(reg5yh & 0x70) >> 4] );
return p-buffer; /* => must be less than 4k! */
}
#endif /* defined(DISPLAY_ALI_TIMINGS) && defined(CONFIG_PROC_FS) */
/**
* ali15x3_tune_drive - set up a drive
* @drive: drive to tune
* @pio: unused
*
* Select the best PIO timing for the drive in question. Then
* program the controller for this drive set up
*/
static void ali15x3_tune_drive (ide_drive_t *drive, u8 pio)
{
ide_pio_data_t d;
ide_hwif_t *hwif = HWIF(drive);
struct pci_dev *dev = hwif->pci_dev;
int s_time, a_time, c_time;
u8 s_clc, a_clc, r_clc;
unsigned long flags;
int bus_speed = system_bus_clock();
int port = hwif->channel ? 0x5c : 0x58;
int portFIFO = hwif->channel ? 0x55 : 0x54;
u8 cd_dma_fifo = 0;
int unit = drive->select.b.unit & 1;
pio = ide_get_best_pio_mode(drive, pio, 5, &d);
s_time = ide_pio_timings[pio].setup_time;
a_time = ide_pio_timings[pio].active_time;
if ((s_clc = (s_time * bus_speed + 999) / 1000) >= 8)
s_clc = 0;
if ((a_clc = (a_time * bus_speed + 999) / 1000) >= 8)
a_clc = 0;
c_time = ide_pio_timings[pio].cycle_time;
#if 0
if ((r_clc = ((c_time - s_time - a_time) * bus_speed + 999) / 1000) >= 16)
r_clc = 0;
#endif
if (!(r_clc = (c_time * bus_speed + 999) / 1000 - a_clc - s_clc)) {
r_clc = 1;
} else {
if (r_clc >= 16)
r_clc = 0;
}
local_irq_save(flags);
/*
* PIO mode => ATA FIFO on, ATAPI FIFO off
*/
pci_read_config_byte(dev, portFIFO, &cd_dma_fifo);
if (drive->media==ide_disk) {
if (unit) {
pci_write_config_byte(dev, portFIFO, (cd_dma_fifo & 0x0F) | 0x50);
} else {
pci_write_config_byte(dev, portFIFO, (cd_dma_fifo & 0xF0) | 0x05);
}
} else {
if (unit) {
pci_write_config_byte(dev, portFIFO, cd_dma_fifo & 0x0F);
} else {
pci_write_config_byte(dev, portFIFO, cd_dma_fifo & 0xF0);
}
}
pci_write_config_byte(dev, port, s_clc);
pci_write_config_byte(dev, port+drive->select.b.unit+2, (a_clc << 4) | r_clc);
local_irq_restore(flags);
/*
* setup active rec
* { 70, 165, 365 }, PIO Mode 0
* { 50, 125, 208 }, PIO Mode 1
* { 30, 100, 110 }, PIO Mode 2
* { 30, 80, 70 }, PIO Mode 3 with IORDY
* { 25, 70, 25 }, PIO Mode 4 with IORDY ns
* { 20, 50, 30 } PIO Mode 5 with IORDY (nonstandard)
*/
}
/**
* ali15x3_can_ultra - check for ultra DMA support
* @drive: drive to do the check
*
* 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
* 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)
{
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 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;
}
/**
* ali15x3_tune_chipset - set up chiset for new speed
* @drive: drive to configure for
* @xferspeed: desired speed
*
* Configure the hardware for the desired IDE transfer mode.
* We also do the needed drive configuration through helpers
*/
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 speed1 = speed;
u8 unit = (drive->select.b.unit & 0x01);
u8 tmpbyte = 0x00;
int m5229_udma = (hwif->channel) ? 0x57 : 0x56;
if (speed == XFER_UDMA_6)
speed1 = 0x47;
if (speed < XFER_UDMA_0) {
u8 ultra_enable = (unit) ? 0x7f : 0xf7;
/*
* clear "ultra enable" bit
*/
pci_read_config_byte(dev, m5229_udma, &tmpbyte);
tmpbyte &= ultra_enable;
pci_write_config_byte(dev, m5229_udma, tmpbyte);
if (speed < XFER_SW_DMA_0)
ali15x3_tune_drive(drive, speed);
} else {
pci_read_config_byte(dev, m5229_udma, &tmpbyte);
tmpbyte &= (0x0f << ((1-unit) << 2));
/*
* enable ultra dma and set timing
*/
tmpbyte |= ((0x08 | ((4-speed1)&0x07)) << (unit << 2));
pci_write_config_byte(dev, m5229_udma, tmpbyte);
if (speed >= XFER_UDMA_3) {
pci_read_config_byte(dev, 0x4b, &tmpbyte);
tmpbyte |= 1;
pci_write_config_byte(dev, 0x4b, tmpbyte);
}
}
return (ide_config_drive_speed(drive, speed));
}
/**
* config_chipset_for_dma - set up DMA mode
* @drive: drive to configure for
*
* Place a drive into DMA mode and tune the chipset for
* the selected speed.
*
* Returns true if DMA mode can be used
*/
static int config_chipset_for_dma (ide_drive_t *drive)
{
u8 speed = ide_dma_speed(drive, ali15x3_ratemask(drive));
if (!(speed))
return 0;
(void) ali15x3_tune_chipset(drive, speed);
return ide_dma_enable(drive);
}
/**
* ali15x3_config_drive_for_dma - configure for DMA
* @drive: drive to configure
*
* Configure a drive for DMA operation. If DMA is not possible we
* drop the drive into PIO mode instead.
*
* FIXME: exactly what are we trying to return here
*/
static int ali15x3_config_drive_for_dma(ide_drive_t *drive)
{
ide_hwif_t *hwif = HWIF(drive);
struct hd_driveid *id = drive->id;
if ((m5229_revision<=0x20) && (drive->media!=ide_disk))
return hwif->ide_dma_off_quietly(drive);
drive->init_speed = 0;
if ((id != NULL) && ((id->capability & 1) != 0) && drive->autodma) {
/* Consult the list of known "bad" drives */
if (__ide_dma_bad_drive(drive))
goto ata_pio;
if ((id->field_valid & 4) && (m5229_revision >= 0xC2)) {
if (id->dma_ultra & hwif->ultra_mask) {
/* Force if Capable UltraDMA */
int dma = config_chipset_for_dma(drive);
if ((id->field_valid & 2) && !dma)
goto try_dma_modes;
}
} else if (id->field_valid & 2) {
try_dma_modes:
if ((id->dma_mword & hwif->mwdma_mask) ||
(id->dma_1word & hwif->swdma_mask)) {
/* Force if Capable regular DMA modes */
if (!config_chipset_for_dma(drive))
goto no_dma_set;
}
} else if (__ide_dma_good_drive(drive) &&
(id->eide_dma_time < 150)) {
/* Consult the list of known "good" drives */
if (!config_chipset_for_dma(drive))
goto no_dma_set;
} else {
goto ata_pio;
}
} else {
ata_pio:
hwif->tuneproc(drive, 255);
no_dma_set:
return hwif->ide_dma_off_quietly(drive);
}
return hwif->ide_dma_on(drive);
}
/**
* ali15x3_dma_setup - begin a DMA phase
* @drive: target device
*
* Returns 1 if the DMA cannot be performed, zero on success.
*/
static int ali15x3_dma_setup(ide_drive_t *drive)
{
if (m5229_revision < 0xC2 && drive->media != ide_disk) {
if (rq_data_dir(drive->hwif->hwgroup->rq))
return 1; /* try PIO instead of DMA */
}
return ide_dma_setup(drive);
}
/**
* init_chipset_ali15x3 - Initialise an ALi IDE controller
* @dev: PCI device
* @name: Name of the controller
*
* This function initializes the ALI IDE controller and where
* appropriate also sets up the 1533 southbridge.
*/
static unsigned int __devinit init_chipset_ali15x3 (struct pci_dev *dev, const char *name)
{
unsigned long flags;
u8 tmpbyte;
struct pci_dev *north = pci_find_slot(0, PCI_DEVFN(0,0));
pci_read_config_byte(dev, PCI_REVISION_ID, &m5229_revision);
isa_dev = pci_find_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, NULL);
#if defined(DISPLAY_ALI_TIMINGS) && defined(CONFIG_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) */
local_irq_save(flags);
if (m5229_revision < 0xC2) {
/*
* revision 0x20 (1543-E, 1543-F)
* revision 0xC0, 0xC1 (1543C-C, 1543C-D, 1543C-E)
* clear CD-ROM DMA write bit, m5229, 0x4b, bit 7
*/
pci_read_config_byte(dev, 0x4b, &tmpbyte);
/*
* clear bit 7
*/
pci_write_config_byte(dev, 0x4b, tmpbyte & 0x7F);
local_irq_restore(flags);
return 0;
}
/*
* 1543C-B?, 1535, 1535D, 1553
* Note 1: not all "motherboard" support this detection
* Note 2: if no udma 66 device, the detection may "error".
* but in this case, we will not set the device to
* ultra 66, the detection result is not important
*/
/*
* enable "Cable Detection", m5229, 0x4b, bit3
*/
pci_read_config_byte(dev, 0x4b, &tmpbyte);
pci_write_config_byte(dev, 0x4b, tmpbyte | 0x08);
/*
* We should only tune the 1533 enable if we are using an ALi
* North bridge. We might have no north found on some zany
* box without a device at 0:0.0. The ALi bridge will be at
* 0:0.0 so if we didn't find one we know what is cooking.
*/
if (north && north->vendor != PCI_VENDOR_ID_AL) {
local_irq_restore(flags);
return 0;
}
if (m5229_revision < 0xC5 && isa_dev)
{
/*
* set south-bridge's enable bit, m1533, 0x79
*/
pci_read_config_byte(isa_dev, 0x79, &tmpbyte);
if (m5229_revision == 0xC2) {
/*
* 1543C-B0 (m1533, 0x79, bit 2)
*/
pci_write_config_byte(isa_dev, 0x79, tmpbyte | 0x04);
} else if (m5229_revision >= 0xC3) {
/*
* 1553/1535 (m1533, 0x79, bit 1)
*/
pci_write_config_byte(isa_dev, 0x79, tmpbyte | 0x02);
}
}
local_irq_restore(flags);
return 0;
}
/**
* ata66_ali15x3 - check for UDMA 66 support
* @hwif: IDE interface
*
* This checks if the controller and the cable are capable
* of UDMA66 transfers. It doesn't check the drives.
* But see note 2 below!
*
* FIXME: frobs bits that are not defined on newer ALi devicea
*/
static unsigned int __devinit ata66_ali15x3 (ide_hwif_t *hwif)
{
struct pci_dev *dev = hwif->pci_dev;
unsigned int ata66 = 0;
u8 cable_80_pin[2] = { 0, 0 };
unsigned long flags;
u8 tmpbyte;
local_irq_save(flags);
if (m5229_revision >= 0xC2) {
/*
* Ultra66 cable detection (from Host View)
* m5229, 0x4a, bit0: primary, bit1: secondary 80 pin
*/
pci_read_config_byte(dev, 0x4a, &tmpbyte);
/*
* 0x4a, bit0 is 0 => primary channel
* has 80-pin (from host view)
*/
if (!(tmpbyte & 0x01)) cable_80_pin[0] = 1;
/*
* 0x4a, bit1 is 0 => secondary channel
* has 80-pin (from host view)
*/
if (!(tmpbyte & 0x02)) cable_80_pin[1] = 1;
/*
* Allow ata66 if cable of current channel has 80 pins
*/
ata66 = (hwif->channel)?cable_80_pin[1]:cable_80_pin[0];
} else {
/*
* check m1533, 0x5e, bit 1~4 == 1001 => & 00011110 = 00010010
*/
pci_read_config_byte(isa_dev, 0x5e, &tmpbyte);
chip_is_1543c_e = ((tmpbyte & 0x1e) == 0x12) ? 1: 0;
}
/*
* CD_ROM DMA on (m5229, 0x53, bit0)
* Enable this bit even if we want to use PIO
* PIO FIFO off (m5229, 0x53, bit1)
* The hardware will use 0x54h and 0x55h to control PIO FIFO
* (Not on later devices it seems)
*
* 0x53 changes meaning on later revs - we must no touch
* bit 1 on them. Need to check if 0x20 is the right break
*/
pci_read_config_byte(dev, 0x53, &tmpbyte);
if(m5229_revision <= 0x20)
tmpbyte = (tmpbyte & (~0x02)) | 0x01;
else if (m5229_revision == 0xc7 || m5229_revision == 0xc8)
tmpbyte |= 0x03;
else
tmpbyte |= 0x01;
pci_write_config_byte(dev, 0x53, tmpbyte);
local_irq_restore(flags);
return(ata66);
}
/**
* init_hwif_common_ali15x3 - Set up ALI IDE hardware
* @hwif: IDE interface
*
* Initialize the IDE structure side of the ALi 15x3 driver.
*/
static void __devinit init_hwif_common_ali15x3 (ide_hwif_t *hwif)
{
hwif->autodma = 0;
hwif->tuneproc = &ali15x3_tune_drive;
hwif->speedproc = &ali15x3_tune_chipset;
/* don't use LBA48 DMA on ALi devices before rev 0xC5 */
hwif->no_lba48_dma = (m5229_revision <= 0xC4) ? 1 : 0;
if (!hwif->dma_base) {
hwif->drives[0].autotune = 1;
hwif->drives[1].autotune = 1;
return;
}
hwif->atapi_dma = 1;
if (m5229_revision > 0x20)
hwif->ultra_mask = 0x7f;
hwif->mwdma_mask = 0x07;
hwif->swdma_mask = 0x07;
if (m5229_revision >= 0x20) {
/*
* M1543C or newer for DMAing
*/
hwif->ide_dma_check = &ali15x3_config_drive_for_dma;
hwif->dma_setup = &ali15x3_dma_setup;
if (!noautodma)
hwif->autodma = 1;
if (!(hwif->udma_four))
hwif->udma_four = ata66_ali15x3(hwif);
}
hwif->drives[0].autodma = hwif->autodma;
hwif->drives[1].autodma = hwif->autodma;
}
/**
* init_hwif_ali15x3 - Initialize the ALI IDE x86 stuff
* @hwif: interface to configure
*
* Obtain the IRQ tables for an ALi based IDE solution on the PC
* class platforms. This part of the code isn't applicable to the
* Sparc systems
*/
static void __devinit init_hwif_ali15x3 (ide_hwif_t *hwif)
{
u8 ideic, inmir;
s8 irq_routing_table[] = { -1, 9, 3, 10, 4, 5, 7, 6,
1, 11, 0, 12, 0, 14, 0, 15 };
int irq = -1;
if (hwif->pci_dev->device == PCI_DEVICE_ID_AL_M5229)
hwif->irq = hwif->channel ? 15 : 14;
if (isa_dev) {
/*
* read IDE interface control
*/
pci_read_config_byte(isa_dev, 0x58, &ideic);
/* bit0, bit1 */
ideic = ideic & 0x03;
/* get IRQ for IDE Controller */
if ((hwif->channel && ideic == 0x03) ||
(!hwif->channel && !ideic)) {
/*
* get SIRQ1 routing table
*/
pci_read_config_byte(isa_dev, 0x44, &inmir);
inmir = inmir & 0x0f;
irq = irq_routing_table[inmir];
} else if (hwif->channel && !(ideic & 0x01)) {
/*
* get SIRQ2 routing table
*/
pci_read_config_byte(isa_dev, 0x75, &inmir);
inmir = inmir & 0x0f;
irq = irq_routing_table[inmir];
}
if(irq >= 0)
hwif->irq = irq;
}
init_hwif_common_ali15x3(hwif);
}
/**
* init_dma_ali15x3 - set up DMA on ALi15x3
* @hwif: IDE interface
* @dmabase: DMA interface base PCI address
*
* Set up the DMA functionality on the ALi 15x3. For the ALi
* controllers this is generic so we can let the generic code do
* the actual work.
*/
static void __devinit init_dma_ali15x3 (ide_hwif_t *hwif, unsigned long dmabase)
{
if (m5229_revision < 0x20)
return;
if (!(hwif->channel))
hwif->OUTB(hwif->INB(dmabase+2) & 0x60, dmabase+2);
ide_setup_dma(hwif, dmabase, 8);
}
static ide_pci_device_t ali15x3_chipset __devinitdata = {
.name = "ALI15X3",
.init_chipset = init_chipset_ali15x3,
.init_hwif = init_hwif_ali15x3,
.init_dma = init_dma_ali15x3,
.channels = 2,
.autodma = AUTODMA,
.bootable = ON_BOARD,
};
/**
* alim15x3_init_one - set up an ALi15x3 IDE controller
* @dev: PCI device to set up
*
* Perform the actual set up for an ALi15x3 that has been found by the
* hot plug layer.
*/
static int __devinit alim15x3_init_one(struct pci_dev *dev, const struct pci_device_id *id)
{
static struct pci_device_id ati_rs100[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS100) },
{ },
};
ide_pci_device_t *d = &ali15x3_chipset;
if (pci_dev_present(ati_rs100))
printk(KERN_WARNING "alim15x3: ATI Radeon IGP Northbridge is not yet fully tested.\n");
#if defined(CONFIG_SPARC64)
d->init_hwif = init_hwif_common_ali15x3;
#endif /* CONFIG_SPARC64 */
return ide_setup_pci_device(dev, d);
}
static struct pci_device_id alim15x3_pci_tbl[] = {
{ PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M5229, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
{ PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M5228, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
{ 0, },
};
MODULE_DEVICE_TABLE(pci, alim15x3_pci_tbl);
static struct pci_driver driver = {
.name = "ALI15x3_IDE",
.id_table = alim15x3_pci_tbl,
.probe = alim15x3_init_one,
};
static int ali15x3_ide_init(void)
{
return ide_pci_register_driver(&driver);
}
module_init(ali15x3_ide_init);
MODULE_AUTHOR("Michael Aubry, Andrzej Krzysztofowicz, CJ, Andre Hedrick, Alan Cox");
MODULE_DESCRIPTION("PCI driver module for ALi 15x3 IDE");
MODULE_LICENSE("GPL");
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