patch-2.4.10 linux/drivers/ide/amd7409.c
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- Lines: 472
- Date:
Wed Dec 31 16:00:00 1969
- Orig file:
v2.4.9/linux/drivers/ide/amd7409.c
- Orig date:
Sat May 19 17:43:06 2001
diff -u --recursive --new-file v2.4.9/linux/drivers/ide/amd7409.c linux/drivers/ide/amd7409.c
@@ -1,471 +0,0 @@
-/*
- * linux/drivers/ide/amd7409.c Version 0.05 June 9, 2000
- *
- * Copyright (C) 1999-2000 Andre Hedrick <andre@linux-ide.org>
- * May be copied or modified under the terms of the GNU General Public License
- *
- */
-
-#include <linux/config.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/timer.h>
-#include <linux/mm.h>
-#include <linux/ioport.h>
-#include <linux/blkdev.h>
-#include <linux/hdreg.h>
-
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/pci.h>
-#include <linux/ide.h>
-
-#include <asm/io.h>
-#include <asm/irq.h>
-
-#include "ide_modes.h"
-
-#define DISPLAY_VIPER_TIMINGS
-
-#if defined(DISPLAY_VIPER_TIMINGS) && defined(CONFIG_PROC_FS)
-#include <linux/stat.h>
-#include <linux/proc_fs.h>
-
-static int amd7409_get_info(char *, char **, off_t, int);
-extern int (*amd7409_display_info)(char *, char **, off_t, int); /* ide-proc.c */
-extern char *ide_media_verbose(ide_drive_t *);
-static struct pci_dev *bmide_dev;
-
-static int amd7409_get_info (char *buffer, char **addr, off_t offset, int count)
-{
- char *p = buffer;
- u32 bibma = pci_resource_start(bmide_dev, 4);
- u8 c0 = 0, c1 = 0;
-
- /*
- * at that point bibma+0x2 et bibma+0xa are byte registers
- * to investigate:
- */
- c0 = inb_p((unsigned short)bibma + 0x02);
- c1 = inb_p((unsigned short)bibma + 0x0a);
-
- p += sprintf(p, "\n AMD 7409 VIPER Chipset.\n");
- p += sprintf(p, "--------------- Primary Channel ---------------- Secondary Channel -------------\n");
- p += sprintf(p, " %sabled %sabled\n",
- (c0&0x80) ? "dis" : " en",
- (c1&0x80) ? "dis" : " en");
- p += sprintf(p, "--------------- drive0 --------- drive1 -------- drive0 ---------- drive1 ------\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 " );
- p += sprintf(p, "UDMA\n");
- p += sprintf(p, "DMA\n");
- p += sprintf(p, "PIO\n");
-
- return p-buffer; /* => must be less than 4k! */
-}
-#endif /* defined(DISPLAY_VIPER_TIMINGS) && defined(CONFIG_PROC_FS) */
-
-byte amd7409_proc = 0;
-
-extern char *ide_xfer_verbose (byte xfer_rate);
-
-static unsigned int amd7409_swdma_check (struct pci_dev *dev)
-{
- unsigned int class_rev;
- pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev);
- class_rev &= 0xff;
- return ((int) (class_rev >= 7) ? 1 : 0);
-}
-
-static int amd7409_swdma_error(ide_drive_t *drive)
-{
- printk("%s: single-word DMA not support (revision < C4)\n", drive->name);
- return 0;
-}
-
-/*
- * Here is where all the hard work goes to program the chipset.
- *
- */
-static int amd7409_tune_chipset (ide_drive_t *drive, byte speed)
-{
- ide_hwif_t *hwif = HWIF(drive);
- struct pci_dev *dev = hwif->pci_dev;
- int err = 0;
- byte unit = (drive->select.b.unit & 0x01);
-#ifdef CONFIG_BLK_DEV_IDEDMA
- unsigned long dma_base = hwif->dma_base;
-#endif /* CONFIG_BLK_DEV_IDEDMA */
- byte drive_pci = 0x00;
- byte drive_pci2 = 0x00;
- byte ultra_timing = 0x00;
- byte dma_pio_timing = 0x00;
- byte pio_timing = 0x00;
-
- switch (drive->dn) {
- case 0: drive_pci = 0x53; drive_pci2 = 0x4b; break;
- case 1: drive_pci = 0x52; drive_pci2 = 0x4a; break;
- case 2: drive_pci = 0x51; drive_pci2 = 0x49; break;
- case 3: drive_pci = 0x50; drive_pci2 = 0x48; break;
- default:
- return -1;
- }
-
- pci_read_config_byte(dev, drive_pci, &ultra_timing);
- pci_read_config_byte(dev, drive_pci2, &dma_pio_timing);
- pci_read_config_byte(dev, 0x4c, &pio_timing);
-
-#ifdef DEBUG
- printk("%s: UDMA 0x%02x DMAPIO 0x%02x PIO 0x%02x ",
- drive->name, ultra_timing, dma_pio_timing, pio_timing);
-#endif
-
- ultra_timing &= ~0xC7;
- dma_pio_timing &= ~0xFF;
- pio_timing &= ~(0x03 << drive->dn);
-
-#ifdef DEBUG
- printk(":: UDMA 0x%02x DMAPIO 0x%02x PIO 0x%02x ",
- ultra_timing, dma_pio_timing, pio_timing);
-#endif
-
- switch(speed) {
-#ifdef CONFIG_BLK_DEV_IDEDMA
- case XFER_UDMA_4:
- ultra_timing |= 0x45;
- dma_pio_timing |= 0x20;
- break;
- case XFER_UDMA_3:
- ultra_timing |= 0x44;
- dma_pio_timing |= 0x20;
- break;
- case XFER_UDMA_2:
- ultra_timing |= 0x40;
- dma_pio_timing |= 0x20;
- break;
- case XFER_UDMA_1:
- ultra_timing |= 0x41;
- dma_pio_timing |= 0x20;
- break;
- case XFER_UDMA_0:
- ultra_timing |= 0x42;
- dma_pio_timing |= 0x20;
- break;
- case XFER_MW_DMA_2:
- dma_pio_timing |= 0x20;
- break;
- case XFER_MW_DMA_1:
- dma_pio_timing |= 0x21;
- break;
- case XFER_MW_DMA_0:
- dma_pio_timing |= 0x77;
- break;
- case XFER_SW_DMA_2:
- if (!amd7409_swdma_check(dev))
- return amd7409_swdma_error(drive);
- dma_pio_timing |= 0x42;
- break;
- case XFER_SW_DMA_1:
- if (!amd7409_swdma_check(dev))
- return amd7409_swdma_error(drive);
- dma_pio_timing |= 0x65;
- break;
- case XFER_SW_DMA_0:
- if (!amd7409_swdma_check(dev))
- return amd7409_swdma_error(drive);
- dma_pio_timing |= 0xA8;
- break;
-#endif /* CONFIG_BLK_DEV_IDEDMA */
- case XFER_PIO_4:
- dma_pio_timing |= 0x20;
- break;
- case XFER_PIO_3:
- dma_pio_timing |= 0x22;
- break;
- case XFER_PIO_2:
- dma_pio_timing |= 0x42;
- break;
- case XFER_PIO_1:
- dma_pio_timing |= 0x65;
- break;
- case XFER_PIO_0:
- default:
- dma_pio_timing |= 0xA8;
- break;
- }
-
- pio_timing |= (0x03 << drive->dn);
-
- if (!drive->init_speed)
- drive->init_speed = speed;
-
-#ifdef CONFIG_BLK_DEV_IDEDMA
- pci_write_config_byte(dev, drive_pci, ultra_timing);
-#endif /* CONFIG_BLK_DEV_IDEDMA */
- pci_write_config_byte(dev, drive_pci2, dma_pio_timing);
- pci_write_config_byte(dev, 0x4c, pio_timing);
-
-#ifdef DEBUG
- printk(":: UDMA 0x%02x DMAPIO 0x%02x PIO 0x%02x\n",
- ultra_timing, dma_pio_timing, pio_timing);
-#endif
-
-#ifdef CONFIG_BLK_DEV_IDEDMA
- if (speed > XFER_PIO_4) {
- outb(inb(dma_base+2)|(1<<(5+unit)), dma_base+2);
- } else {
- outb(inb(dma_base+2) & ~(1<<(5+unit)), dma_base+2);
- }
-#endif /* CONFIG_BLK_DEV_IDEDMA */
-
- err = ide_config_drive_speed(drive, speed);
- drive->current_speed = speed;
- return (err);
-}
-
-static void config_chipset_for_pio (ide_drive_t *drive)
-{
- unsigned short eide_pio_timing[6] = {960, 480, 240, 180, 120, 90};
- unsigned short xfer_pio = drive->id->eide_pio_modes;
- byte timing, speed, pio;
-
- pio = ide_get_best_pio_mode(drive, 255, 5, NULL);
-
- if (xfer_pio> 4)
- xfer_pio = 0;
-
- if (drive->id->eide_pio_iordy > 0) {
- for (xfer_pio = 5;
- xfer_pio>0 &&
- drive->id->eide_pio_iordy>eide_pio_timing[xfer_pio];
- xfer_pio--);
- } else {
- xfer_pio = (drive->id->eide_pio_modes & 4) ? 0x05 :
- (drive->id->eide_pio_modes & 2) ? 0x04 :
- (drive->id->eide_pio_modes & 1) ? 0x03 :
- (drive->id->tPIO & 2) ? 0x02 :
- (drive->id->tPIO & 1) ? 0x01 : xfer_pio;
- }
-
- timing = (xfer_pio >= pio) ? xfer_pio : pio;
-
- switch(timing) {
- case 4: speed = XFER_PIO_4;break;
- case 3: speed = XFER_PIO_3;break;
- case 2: speed = XFER_PIO_2;break;
- case 1: speed = XFER_PIO_1;break;
- default:
- speed = (!drive->id->tPIO) ? XFER_PIO_0 : XFER_PIO_SLOW;
- break;
- }
- (void) amd7409_tune_chipset(drive, speed);
- drive->current_speed = speed;
-}
-
-static void amd7409_tune_drive (ide_drive_t *drive, byte pio)
-{
- byte speed;
- switch(pio) {
- case 4: speed = XFER_PIO_4;break;
- case 3: speed = XFER_PIO_3;break;
- case 2: speed = XFER_PIO_2;break;
- case 1: speed = XFER_PIO_1;break;
- default: speed = XFER_PIO_0;break;
- }
- (void) amd7409_tune_chipset(drive, speed);
-}
-
-#ifdef CONFIG_BLK_DEV_IDEDMA
-/*
- * 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.
- */
-static int config_chipset_for_dma (ide_drive_t *drive)
-{
- struct hd_driveid *id = drive->id;
- byte udma_66 = eighty_ninty_three(drive);
- byte udma_100 = 0;
- byte speed = 0x00;
- int rval;
-
- if ((id->dma_ultra & 0x0020) && (udma_66)&& (udma_100)) {
- speed = XFER_UDMA_5;
- } else if ((id->dma_ultra & 0x0010) && (udma_66)) {
- speed = XFER_UDMA_4;
- } else if ((id->dma_ultra & 0x0008) && (udma_66)) {
- speed = XFER_UDMA_3;
- } else if (id->dma_ultra & 0x0004) {
- speed = XFER_UDMA_2;
- } else if (id->dma_ultra & 0x0002) {
- speed = XFER_UDMA_1;
- } else if (id->dma_ultra & 0x0001) {
- speed = XFER_UDMA_0;
- } else if (id->dma_mword & 0x0004) {
- speed = XFER_MW_DMA_2;
- } else if (id->dma_mword & 0x0002) {
- speed = XFER_MW_DMA_1;
- } else if (id->dma_mword & 0x0001) {
- speed = XFER_MW_DMA_0;
- } else {
- return ((int) ide_dma_off_quietly);
- }
-
- (void) amd7409_tune_chipset(drive, speed);
-
- rval = (int)( ((id->dma_ultra >> 11) & 3) ? ide_dma_on :
- ((id->dma_ultra >> 8) & 7) ? ide_dma_on :
- ((id->dma_mword >> 8) & 7) ? ide_dma_on :
- ide_dma_off_quietly);
-
- return rval;
-}
-
-
-
-static int config_drive_xfer_rate (ide_drive_t *drive)
-{
- struct hd_driveid *id = drive->id;
- ide_dma_action_t dma_func = ide_dma_on;
-
- if (id && (id->capability & 1) && HWIF(drive)->autodma) {
- /* Consult the list of known "bad" drives */
- if (ide_dmaproc(ide_dma_bad_drive, drive)) {
- dma_func = ide_dma_off;
- goto fast_ata_pio;
- }
- dma_func = ide_dma_off_quietly;
- if (id->field_valid & 4) {
- if (id->dma_ultra & 0x002F) {
- /* Force if Capable UltraDMA */
- dma_func = config_chipset_for_dma(drive);
- if ((id->field_valid & 2) &&
- (dma_func != ide_dma_on))
- goto try_dma_modes;
- }
- } else if (id->field_valid & 2) {
-try_dma_modes:
- if ((id->dma_mword & 0x0007) ||
- ((id->dma_1word & 0x007) &&
- (amd7409_swdma_check(HWIF(drive)->pci_dev)))) {
- /* Force if Capable regular DMA modes */
- dma_func = config_chipset_for_dma(drive);
- if (dma_func != ide_dma_on)
- goto no_dma_set;
- }
-
- } else if (ide_dmaproc(ide_dma_good_drive, drive)) {
- if (id->eide_dma_time > 150) {
- goto no_dma_set;
- }
- /* Consult the list of known "good" drives */
- dma_func = config_chipset_for_dma(drive);
- if (dma_func != ide_dma_on)
- goto no_dma_set;
- } else {
- goto fast_ata_pio;
- }
- } else if ((id->capability & 8) || (id->field_valid & 2)) {
-fast_ata_pio:
- dma_func = ide_dma_off_quietly;
-no_dma_set:
-
- config_chipset_for_pio(drive);
- }
- return HWIF(drive)->dmaproc(dma_func, drive);
-}
-
-/*
- * amd7409_dmaproc() initiates/aborts (U)DMA read/write operations on a drive.
- */
-
-int amd7409_dmaproc (ide_dma_action_t func, ide_drive_t *drive)
-{
- switch (func) {
- case ide_dma_check:
- return config_drive_xfer_rate(drive);
- default:
- break;
- }
- return ide_dmaproc(func, drive); /* use standard DMA stuff */
-}
-#endif /* CONFIG_BLK_DEV_IDEDMA */
-
-unsigned int __init pci_init_amd7409 (struct pci_dev *dev, const char *name)
-{
- unsigned long fixdma_base = pci_resource_start(dev, 4);
-
-#ifdef CONFIG_BLK_DEV_IDEDMA
- if (!amd7409_swdma_check(dev))
- printk("%s: disabling single-word DMA support (revision < C4)\n", name);
-#endif /* CONFIG_BLK_DEV_IDEDMA */
-
- if (!fixdma_base) {
- /*
- *
- */
- } else {
- /*
- * enable DMA capable bit, and "not" simplex only
- */
- outb(inb(fixdma_base+2) & 0x60, fixdma_base+2);
-
- if (inb(fixdma_base+2) & 0x80)
- printk("%s: simplex device: DMA will fail!!\n", name);
- }
-#if defined(DISPLAY_VIPER_TIMINGS) && defined(CONFIG_PROC_FS)
- if (!amd7409_proc) {
- amd7409_proc = 1;
- bmide_dev = dev;
- amd7409_display_info = &amd7409_get_info;
- }
-#endif /* DISPLAY_VIPER_TIMINGS && CONFIG_PROC_FS */
-
- return 0;
-}
-
-unsigned int __init ata66_amd7409 (ide_hwif_t *hwif)
-{
-#ifdef CONFIG_AMD7409_OVERRIDE
- byte ata66 = 1;
-#else
- byte ata66 = 0;
-#endif /* CONFIG_AMD7409_OVERRIDE */
-
-#if 0
- pci_read_config_byte(hwif->pci_dev, 0x48, &ata66);
- return ((ata66 & 0x02) ? 0 : 1);
-#endif
- return ata66;
-}
-
-void __init ide_init_amd7409 (ide_hwif_t *hwif)
-{
- hwif->tuneproc = &amd7409_tune_drive;
- hwif->speedproc = &amd7409_tune_chipset;
-
-#ifndef CONFIG_BLK_DEV_IDEDMA
- hwif->drives[0].autotune = 1;
- hwif->drives[1].autotune = 1;
- hwif->autodma = 0;
- return;
-#else
-
- if (hwif->dma_base) {
- hwif->dmaproc = &amd7409_dmaproc;
- if (!noautodma)
- hwif->autodma = 1;
- } else {
- hwif->autodma = 0;
- hwif->drives[0].autotune = 1;
- hwif->drives[1].autotune = 1;
- }
-#endif /* CONFIG_BLK_DEV_IDEDMA */
-}
-
-void __init ide_dmacapable_amd7409 (ide_hwif_t *hwif, unsigned long dmabase)
-{
- ide_setup_dma(hwif, dmabase, 8);
-}
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