patch-2.4.21 linux-2.4.21/drivers/ide/pci/amd74xx.c
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- Lines: 484
- Date:
2003-06-13 07:51:33.000000000 -0700
- Orig file:
linux-2.4.20/drivers/ide/pci/amd74xx.c
- Orig date:
1969-12-31 16:00:00.000000000 -0800
diff -urN linux-2.4.20/drivers/ide/pci/amd74xx.c linux-2.4.21/drivers/ide/pci/amd74xx.c
@@ -0,0 +1,483 @@
+/*
+ * Version 2.10
+ *
+ * AMD 755/756/766/8111 and nVidia nForce IDE driver for Linux.
+ *
+ * Copyright (c) 2000-2002 Vojtech Pavlik
+ *
+ * Based on the work of:
+ * Andre Hedrick
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/ioport.h>
+#include <linux/blkdev.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/ide.h>
+#include <asm/io.h>
+
+#include "ide-timing.h"
+#include "amd74xx.h"
+
+#define AMD_IDE_ENABLE (0x00 + amd_config->base)
+#define AMD_IDE_CONFIG (0x01 + amd_config->base)
+#define AMD_CABLE_DETECT (0x02 + amd_config->base)
+#define AMD_DRIVE_TIMING (0x08 + amd_config->base)
+#define AMD_8BIT_TIMING (0x0e + amd_config->base)
+#define AMD_ADDRESS_SETUP (0x0c + amd_config->base)
+#define AMD_UDMA_TIMING (0x10 + amd_config->base)
+
+#define AMD_UDMA 0x07
+#define AMD_UDMA_33 0x01
+#define AMD_UDMA_66 0x02
+#define AMD_UDMA_100 0x03
+#define AMD_CHECK_SWDMA 0x08
+#define AMD_BAD_SWDMA 0x10
+#define AMD_BAD_FIFO 0x20
+
+/*
+ * AMD SouthBridge chips.
+ */
+
+static struct amd_ide_chip {
+ unsigned short id;
+ unsigned char rev;
+ unsigned long base;
+ unsigned char flags;
+} amd_ide_chips[] = {
+ { PCI_DEVICE_ID_AMD_COBRA_7401, 0x00, 0x40, AMD_UDMA_33 | AMD_BAD_SWDMA }, /* AMD-755 Cobra */
+ { PCI_DEVICE_ID_AMD_VIPER_7409, 0x00, 0x40, AMD_UDMA_66 | AMD_CHECK_SWDMA }, /* AMD-756 Viper */
+ { PCI_DEVICE_ID_AMD_VIPER_7411, 0x00, 0x40, AMD_UDMA_100 | AMD_BAD_FIFO }, /* AMD-766 Viper */
+ { PCI_DEVICE_ID_AMD_OPUS_7441, 0x00, 0x40, AMD_UDMA_100 }, /* AMD-768 Opus */
+ { PCI_DEVICE_ID_AMD_8111_IDE, 0x00, 0x40, AMD_UDMA_100 }, /* AMD-8111 */
+ { PCI_DEVICE_ID_NVIDIA_NFORCE_IDE, 0x00, 0x50, AMD_UDMA_100 }, /* nVidia nForce */
+ { PCI_DEVICE_ID_NVIDIA_NFORCE2_IDE, 0x00, 0x50, AMD_UDMA_100 }, /* nVidia nForce */
+
+ { 0 }
+};
+
+static struct amd_ide_chip *amd_config;
+static unsigned char amd_enabled;
+static unsigned int amd_80w;
+static unsigned int amd_clock;
+
+static unsigned char amd_cyc2udma[] = { 6, 6, 5, 4, 0, 1, 1, 2, 2, 3, 3 };
+static unsigned char amd_udma2cyc[] = { 4, 6, 8, 10, 3, 2, 1, 1 };
+static char *amd_dma[] = { "MWDMA16", "UDMA33", "UDMA66", "UDMA100" };
+
+/*
+ * AMD /proc entry.
+ */
+
+#ifdef CONFIG_PROC_FS
+
+#include <linux/stat.h>
+#include <linux/proc_fs.h>
+
+static unsigned long amd_base;
+static struct pci_dev *bmide_dev;
+extern int (*amd74xx_display_info)(char *, char **, off_t, int); /* ide-proc.c */
+
+#define amd_print(format, arg...) p += sprintf(p, format "\n" , ## arg)
+#define amd_print_drive(name, format, arg...)\
+ p += sprintf(p, name); for (i = 0; i < 4; i++) p += sprintf(p, format, ## arg); p += sprintf(p, "\n");
+
+static int amd74xx_get_info(char *buffer, char **addr, off_t offset, int count)
+{
+ int speed[4], cycle[4], setup[4], active[4], recover[4], den[4],
+ uen[4], udma[4], active8b[4], recover8b[4];
+ struct pci_dev *dev = bmide_dev;
+ unsigned int v, u, i;
+ unsigned short c, w;
+ unsigned char t;
+ char *p = buffer;
+ int len;
+
+ amd_print("----------AMD BusMastering IDE Configuration----------------");
+
+ amd_print("Driver Version: 2.10");
+ amd_print("South Bridge: %s", bmide_dev->name);
+
+ pci_read_config_byte(dev, PCI_REVISION_ID, &t);
+ amd_print("Revision: IDE %#x", t);
+ amd_print("Highest DMA rate: %s", amd_dma[amd_config->flags & AMD_UDMA]);
+
+ amd_print("BM-DMA base: %#lx", amd_base);
+ amd_print("PCI clock: %d.%dMHz", amd_clock / 1000, amd_clock / 100 % 10);
+
+ amd_print("-----------------------Primary IDE-------Secondary IDE------");
+
+ pci_read_config_byte(dev, AMD_IDE_CONFIG, &t);
+ amd_print("Prefetch Buffer: %10s%20s", (t & 0x80) ? "yes" : "no", (t & 0x20) ? "yes" : "no");
+ amd_print("Post Write Buffer: %10s%20s", (t & 0x40) ? "yes" : "no", (t & 0x10) ? "yes" : "no");
+
+ pci_read_config_byte(dev, AMD_IDE_ENABLE, &t);
+ amd_print("Enabled: %10s%20s", (t & 0x02) ? "yes" : "no", (t & 0x01) ? "yes" : "no");
+
+ c = inb(amd_base + 0x02) | (inb(amd_base + 0x0a) << 8);
+ amd_print("Simplex only: %10s%20s", (c & 0x80) ? "yes" : "no", (c & 0x8000) ? "yes" : "no");
+
+ amd_print("Cable Type: %10s%20s", (amd_80w & 1) ? "80w" : "40w", (amd_80w & 2) ? "80w" : "40w");
+
+ if (!amd_clock)
+ return p - buffer;
+
+ amd_print("-------------------drive0----drive1----drive2----drive3-----");
+
+ pci_read_config_byte(dev, AMD_ADDRESS_SETUP, &t);
+ pci_read_config_dword(dev, AMD_DRIVE_TIMING, &v);
+ pci_read_config_word(dev, AMD_8BIT_TIMING, &w);
+ pci_read_config_dword(dev, AMD_UDMA_TIMING, &u);
+
+ 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] = amd_udma2cyc[((u >> ((3 - i) << 3)) & 0x7)];
+ uen[i] = ((u >> ((3 - i) << 3)) & 0x40) ? 1 : 0;
+ den[i] = (c & ((i & 1) ? 0x40 : 0x20) << ((i & 2) << 2));
+
+ if (den[i] && uen[i] && udma[i] == 1) {
+ speed[i] = amd_clock * 3;
+ cycle[i] = 666666 / amd_clock;
+ continue;
+ }
+
+ speed[i] = 4 * amd_clock / ((den[i] && uen[i]) ? udma[i] : (active[i] + recover[i]) * 2);
+ cycle[i] = 1000000 * ((den[i] && uen[i]) ? udma[i] : (active[i] + recover[i]) * 2) / amd_clock / 2;
+ }
+
+ amd_print_drive("Transfer Mode: ", "%10s", den[i] ? (uen[i] ? "UDMA" : "DMA") : "PIO");
+
+ amd_print_drive("Address Setup: ", "%8dns", 1000000 * setup[i] / amd_clock);
+ amd_print_drive("Cmd Active: ", "%8dns", 1000000 * active8b[i] / amd_clock);
+ amd_print_drive("Cmd Recovery: ", "%8dns", 1000000 * recover8b[i] / amd_clock);
+ amd_print_drive("Data Active: ", "%8dns", 1000000 * active[i] / amd_clock);
+ amd_print_drive("Data Recovery: ", "%8dns", 1000000 * recover[i] / amd_clock);
+ amd_print_drive("Cycle Time: ", "%8dns", cycle[i]);
+ amd_print_drive("Transfer Rate: ", "%4d.%dMB/s", speed[i] / 1000, speed[i] / 100 % 10);
+
+ /* hoping p - buffer is less than 4K... */
+ len = (p - buffer) - offset;
+ *addr = buffer + offset;
+
+ return len > count ? count : len;
+}
+
+#endif
+
+/*
+ * amd_set_speed() writes timing values to the chipset registers
+ */
+
+static void amd_set_speed(struct pci_dev *dev, unsigned char dn, struct ide_timing *timing)
+{
+ unsigned char t;
+
+ pci_read_config_byte(dev, AMD_ADDRESS_SETUP, &t);
+ t = (t & ~(3 << ((3 - dn) << 1))) | ((FIT(timing->setup, 1, 4) - 1) << ((3 - dn) << 1));
+ pci_write_config_byte(dev, AMD_ADDRESS_SETUP, t);
+
+ pci_write_config_byte(dev, AMD_8BIT_TIMING + (1 - (dn >> 1)),
+ ((FIT(timing->act8b, 1, 16) - 1) << 4) | (FIT(timing->rec8b, 1, 16) - 1));
+
+ pci_write_config_byte(dev, AMD_DRIVE_TIMING + (3 - dn),
+ ((FIT(timing->active, 1, 16) - 1) << 4) | (FIT(timing->recover, 1, 16) - 1));
+
+ switch (amd_config->flags & AMD_UDMA) {
+ case AMD_UDMA_33: t = timing->udma ? (0xc0 | (FIT(timing->udma, 2, 5) - 2)) : 0x03; break;
+ case AMD_UDMA_66: t = timing->udma ? (0xc0 | amd_cyc2udma[FIT(timing->udma, 2, 10)]) : 0x03; break;
+ case AMD_UDMA_100: t = timing->udma ? (0xc0 | amd_cyc2udma[FIT(timing->udma, 1, 10)]) : 0x03; break;
+ default: return;
+ }
+
+ pci_write_config_byte(dev, AMD_UDMA_TIMING + (3 - dn), t);
+}
+
+/*
+ * amd_set_drive() computes timing values configures the drive and
+ * the chipset to a desired transfer mode. It also can be called
+ * by upper layers.
+ */
+
+static int amd_set_drive(ide_drive_t *drive, u8 speed)
+{
+ ide_drive_t *peer = HWIF(drive)->drives + (~drive->dn & 1);
+ struct ide_timing t, p;
+ int T, UT;
+
+ if (speed != XFER_PIO_SLOW && speed != drive->current_speed)
+ if (ide_config_drive_speed(drive, speed))
+ printk(KERN_WARNING "ide%d: Drive %d didn't accept speed setting. Oh, well.\n",
+ drive->dn >> 1, drive->dn & 1);
+
+ T = 1000000000 / amd_clock;
+ UT = T / min_t(int, max_t(int, amd_config->flags & AMD_UDMA, 1), 2);
+
+ ide_timing_compute(drive, speed, &t, T, UT);
+
+ if (peer->present) {
+ ide_timing_compute(peer, peer->current_speed, &p, T, UT);
+ ide_timing_merge(&p, &t, &t, IDE_TIMING_8BIT);
+ }
+
+ if (speed == XFER_UDMA_5 && amd_clock <= 33333) t.udma = 1;
+
+ amd_set_speed(HWIF(drive)->pci_dev, drive->dn, &t);
+
+ if (!drive->init_speed)
+ drive->init_speed = speed;
+ drive->current_speed = speed;
+
+ return 0;
+}
+
+/*
+ * amd74xx_tune_drive() is a callback from upper layers for
+ * PIO-only tuning.
+ */
+
+static void amd74xx_tune_drive(ide_drive_t *drive, u8 pio)
+{
+ if (!((amd_enabled >> HWIF(drive)->channel) & 1))
+ return;
+
+ if (pio == 255) {
+ amd_set_drive(drive, ide_find_best_mode(drive, XFER_PIO | XFER_EPIO));
+ return;
+ }
+
+ amd_set_drive(drive, XFER_PIO_0 + min_t(byte, pio, 5));
+}
+
+/*
+ * amd74xx_dmaproc() is a callback from upper layers that can do
+ * a lot, but we use it for DMA/PIO tuning only, delegating everything
+ * else to the default ide_dmaproc().
+ */
+
+static int amd74xx_ide_dma_check(ide_drive_t *drive)
+{
+ int w80 = HWIF(drive)->udma_four;
+
+ u8 speed = ide_find_best_mode(drive,
+ XFER_PIO | XFER_EPIO | XFER_MWDMA | XFER_UDMA |
+ ((amd_config->flags & AMD_BAD_SWDMA) ? 0 : XFER_SWDMA) |
+ (w80 && (amd_config->flags & AMD_UDMA) >= AMD_UDMA_66 ? XFER_UDMA_66 : 0) |
+ (w80 && (amd_config->flags & AMD_UDMA) >= AMD_UDMA_100 ? XFER_UDMA_100 : 0));
+
+ amd_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);
+}
+
+/*
+ * The initialization callback. Here we determine the IDE chip type
+ * and initialize its drive independent registers.
+ */
+
+static unsigned int __init init_chipset_amd74xx(struct pci_dev *dev, const char *name)
+{
+ unsigned char t;
+ unsigned int u;
+ int i;
+
+/*
+ * Check for bad SWDMA.
+ */
+
+ if (amd_config->flags & AMD_CHECK_SWDMA) {
+ pci_read_config_byte(dev, PCI_REVISION_ID, &t);
+ if (t <= 7)
+ amd_config->flags |= AMD_BAD_SWDMA;
+ }
+
+/*
+ * Check 80-wire cable presence.
+ */
+
+ switch (amd_config->flags & AMD_UDMA) {
+
+ case AMD_UDMA_100:
+ pci_read_config_byte(dev, AMD_CABLE_DETECT, &t);
+ pci_read_config_dword(dev, AMD_UDMA_TIMING, &u);
+ amd_80w = ((t & 0x3) ? 1 : 0) | ((t & 0xc) ? 2 : 0);
+ for (i = 24; i >= 0; i -= 8)
+ if (((u >> i) & 4) && !(amd_80w & (1 << (1 - (i >> 4))))) {
+ printk(KERN_WARNING "AMD_IDE: Bios didn't set cable bits corectly. Enabling workaround.\n");
+ amd_80w |= (1 << (1 - (i >> 4)));
+ }
+ break;
+
+ case AMD_UDMA_66:
+ pci_read_config_dword(dev, AMD_UDMA_TIMING, &u);
+ for (i = 24; i >= 0; i -= 8)
+ if ((u >> i) & 4)
+ amd_80w |= (1 << (1 - (i >> 4)));
+ break;
+ }
+
+ pci_read_config_dword(dev, AMD_IDE_ENABLE, &u);
+ amd_enabled = ((u & 1) ? 2 : 0) | ((u & 2) ? 1 : 0);
+
+/*
+ * Take care of prefetch & postwrite.
+ */
+
+ pci_read_config_byte(dev, AMD_IDE_CONFIG, &t);
+ pci_write_config_byte(dev, AMD_IDE_CONFIG,
+ (amd_config->flags & AMD_BAD_FIFO) ? (t & 0x0f) : (t | 0xf0));
+
+/*
+ * Determine the system bus clock.
+ */
+
+ amd_clock = system_bus_clock() * 1000;
+
+ switch (amd_clock) {
+ case 33000: amd_clock = 33333; break;
+ case 37000: amd_clock = 37500; break;
+ case 41000: amd_clock = 41666; break;
+ }
+
+ if (amd_clock < 20000 || amd_clock > 50000) {
+ printk(KERN_WARNING "AMD_IDE: User given PCI clock speed impossible (%d), using 33 MHz instead.\n", amd_clock);
+ printk(KERN_WARNING "AMD_IDE: Use ide0=ata66 if you want to assume 80-wire cable\n");
+ amd_clock = 33333;
+ }
+
+/*
+ * Print the boot message.
+ */
+
+ pci_read_config_byte(dev, PCI_REVISION_ID, &t);
+ printk(KERN_INFO "AMD_IDE: %s (rev %02x) %s controller on pci%s\n",
+ dev->name, t, amd_dma[amd_config->flags & AMD_UDMA], dev->slot_name);
+
+/*
+ * Register /proc/ide/amd74xx entry
+ */
+
+#if defined(DISPLAY_AMD_TIMINGS) && defined(CONFIG_PROC_FS)
+ if (!amd74xx_proc) {
+ amd_base = pci_resource_start(dev, 4);
+ bmide_dev = dev;
+ ide_pci_register_host_proc(&amd74xx_procs[0]);
+ amd74xx_proc = 1;
+ }
+#endif /* DISPLAY_AMD_TIMINGS && CONFIG_PROC_FS */
+
+
+ return 0;
+}
+
+static unsigned int __init ata66_amd74xx(ide_hwif_t *hwif)
+{
+ return ((amd_enabled & amd_80w) >> hwif->channel) & 1;
+}
+
+static void __init init_hwif_amd74xx(ide_hwif_t *hwif)
+{
+ int i;
+
+ hwif->autodma = 0;
+
+ hwif->tuneproc = &amd74xx_tune_drive;
+ hwif->speedproc = &amd_set_drive;
+
+ for (i = 0; i < 2; i++) {
+ hwif->drives[i].io_32bit = 1;
+ hwif->drives[i].unmask = 1;
+ hwif->drives[i].autotune = 1;
+ hwif->drives[i].dn = hwif->channel * 2 + i;
+ }
+
+ if (!hwif->dma_base)
+ return;
+
+ hwif->atapi_dma = 1;
+ hwif->ultra_mask = 0x7f;
+ hwif->mwdma_mask = 0x07;
+ hwif->swdma_mask = 0x07;
+
+ if (!(hwif->udma_four))
+ hwif->udma_four = ((amd_enabled & amd_80w) >> hwif->channel) & 1;
+ hwif->ide_dma_check = &amd74xx_ide_dma_check;
+ if (!noautodma)
+ hwif->autodma = 1;
+ hwif->drives[0].autodma = hwif->autodma;
+ hwif->drives[1].autodma = hwif->autodma;
+}
+
+/*
+ * We allow the BM-DMA driver only work on enabled interfaces.
+ */
+
+static void __init init_dma_amd74xx(ide_hwif_t *hwif, unsigned long dmabase)
+{
+ if ((amd_enabled >> hwif->channel) & 1)
+ ide_setup_dma(hwif, dmabase, 8);
+}
+
+extern void ide_setup_pci_device(struct pci_dev *, ide_pci_device_t *);
+
+static int __devinit amd74xx_probe(struct pci_dev *dev, const struct pci_device_id *id)
+{
+ ide_pci_device_t *d = amd74xx_chipsets + id->driver_data;
+ amd_config = amd_ide_chips + id->driver_data;
+ if (dev->device != d->device) BUG();
+ if (dev->device != amd_config->id) BUG();
+ ide_setup_pci_device(dev, d);
+ MOD_INC_USE_COUNT;
+ return 0;
+}
+
+static struct pci_device_id amd74xx_pci_tbl[] __devinitdata = {
+ { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_COBRA_7401, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+ { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7409, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1},
+ { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7411, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2},
+ { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_OPUS_7441, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3},
+ { PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_IDE, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4},
+ { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_IDE, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5},
+ { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2_IDE, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6},
+ { 0, },
+};
+
+static struct pci_driver driver = {
+ .name = "AMD IDE",
+ .id_table = amd74xx_pci_tbl,
+ .probe = amd74xx_probe,
+};
+
+static int amd74xx_ide_init(void)
+{
+ return ide_pci_register_driver(&driver);
+}
+
+static void amd74xx_ide_exit(void)
+{
+ ide_pci_unregister_driver(&driver);
+}
+
+module_init(amd74xx_ide_init);
+module_exit(amd74xx_ide_exit);
+
+MODULE_AUTHOR("Vojtech Pavlik");
+MODULE_DESCRIPTION("AMD PCI IDE driver");
+MODULE_LICENSE("GPL");
+
+EXPORT_NO_SYMBOLS;
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