diff options
Diffstat (limited to 'drivers/ide/pci/via82cxxx.c')
| -rw-r--r-- | drivers/ide/pci/via82cxxx.c | 520 |
1 files changed, 0 insertions, 520 deletions
diff --git a/drivers/ide/pci/via82cxxx.c b/drivers/ide/pci/via82cxxx.c deleted file mode 100644 index c85b87cb59d..00000000000 --- a/drivers/ide/pci/via82cxxx.c +++ /dev/null @@ -1,520 +0,0 @@ -/* - * - * Version 3.38 - * - * VIA IDE driver for Linux. Supported southbridges: - * - * vt82c576, vt82c586, vt82c586a, vt82c586b, vt82c596a, vt82c596b, - * vt82c686, vt82c686a, vt82c686b, vt8231, vt8233, vt8233c, vt8233a, - * vt8235, vt8237 - * - * Copyright (c) 2000-2002 Vojtech Pavlik - * - * Based on the work of: - * Michel Aubry - * Jeff Garzik - * Andre Hedrick - * - * Documentation: - * Obsolete device documentation publically available from via.com.tw - * Current device documentation available under NDA only - */ - -/* - * 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> - -#ifdef CONFIG_PPC_MULTIPLATFORM -#include <asm/processor.h> -#endif - -#include "ide-timing.h" - -#define DISPLAY_VIA_TIMINGS - -#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_UDMA 0x007 -#define VIA_UDMA_NONE 0x000 -#define VIA_UDMA_33 0x001 -#define VIA_UDMA_66 0x002 -#define VIA_UDMA_100 0x003 -#define VIA_UDMA_133 0x004 -#define VIA_BAD_PREQ 0x010 /* Crashes if PREQ# till DDACK# set */ -#define VIA_BAD_CLK66 0x020 /* 66 MHz clock doesn't work correctly */ -#define VIA_SET_FIFO 0x040 /* Needs to have FIFO split set */ -#define VIA_NO_UNMASK 0x080 /* Doesn't work with IRQ unmasking on */ -#define VIA_BAD_ID 0x100 /* Has wrong vendor ID (0x1107) */ -#define VIA_BAD_AST 0x200 /* Don't touch Address Setup Timing */ - -/* - * VIA SouthBridge chips. - */ - -static struct via_isa_bridge { - char *name; - u16 id; - u8 rev_min; - u8 rev_max; - u16 flags; -} via_isa_bridges[] = { - { "vt6410", PCI_DEVICE_ID_VIA_6410, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST }, - { "vt8251", PCI_DEVICE_ID_VIA_8251, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST }, - { "vt8237", PCI_DEVICE_ID_VIA_8237, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST }, - { "vt8235", PCI_DEVICE_ID_VIA_8235, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST }, - { "vt8233a", PCI_DEVICE_ID_VIA_8233A, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST }, - { "vt8233c", PCI_DEVICE_ID_VIA_8233C_0, 0x00, 0x2f, VIA_UDMA_100 }, - { "vt8233", PCI_DEVICE_ID_VIA_8233_0, 0x00, 0x2f, VIA_UDMA_100 }, - { "vt8231", PCI_DEVICE_ID_VIA_8231, 0x00, 0x2f, VIA_UDMA_100 }, - { "vt82c686b", PCI_DEVICE_ID_VIA_82C686, 0x40, 0x4f, VIA_UDMA_100 }, - { "vt82c686a", PCI_DEVICE_ID_VIA_82C686, 0x10, 0x2f, VIA_UDMA_66 }, - { "vt82c686", PCI_DEVICE_ID_VIA_82C686, 0x00, 0x0f, VIA_UDMA_33 | VIA_BAD_CLK66 }, - { "vt82c596b", PCI_DEVICE_ID_VIA_82C596, 0x10, 0x2f, VIA_UDMA_66 }, - { "vt82c596a", PCI_DEVICE_ID_VIA_82C596, 0x00, 0x0f, VIA_UDMA_33 | VIA_BAD_CLK66 }, - { "vt82c586b", PCI_DEVICE_ID_VIA_82C586_0, 0x47, 0x4f, VIA_UDMA_33 | VIA_SET_FIFO }, - { "vt82c586b", PCI_DEVICE_ID_VIA_82C586_0, 0x40, 0x46, VIA_UDMA_33 | VIA_SET_FIFO | VIA_BAD_PREQ }, - { "vt82c586b", PCI_DEVICE_ID_VIA_82C586_0, 0x30, 0x3f, VIA_UDMA_33 | VIA_SET_FIFO }, - { "vt82c586a", PCI_DEVICE_ID_VIA_82C586_0, 0x20, 0x2f, VIA_UDMA_33 | VIA_SET_FIFO }, - { "vt82c586", PCI_DEVICE_ID_VIA_82C586_0, 0x00, 0x0f, VIA_UDMA_NONE | VIA_SET_FIFO }, - { "vt82c576", PCI_DEVICE_ID_VIA_82C576, 0x00, 0x2f, VIA_UDMA_NONE | VIA_SET_FIFO | VIA_NO_UNMASK }, - { "vt82c576", PCI_DEVICE_ID_VIA_82C576, 0x00, 0x2f, VIA_UDMA_NONE | VIA_SET_FIFO | VIA_NO_UNMASK | VIA_BAD_ID }, - { NULL } -}; - -static unsigned int via_clock; -static char *via_dma[] = { "MWDMA16", "UDMA33", "UDMA66", "UDMA100", "UDMA133" }; - -struct via82cxxx_dev -{ - struct via_isa_bridge *via_config; - unsigned int via_80w; -}; - -/** - * 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 ide_timing *timing) -{ - struct pci_dev *dev = hwif->pci_dev; - struct via82cxxx_dev *vdev = ide_get_hwifdata(hwif); - 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))) | ((FIT(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)), - ((FIT(timing->act8b, 1, 16) - 1) << 4) | (FIT(timing->rec8b, 1, 16) - 1)); - - pci_write_config_byte(dev, VIA_DRIVE_TIMING + (3 - dn), - ((FIT(timing->active, 1, 16) - 1) << 4) | (FIT(timing->recover, 1, 16) - 1)); - - 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; - case VIA_UDMA_133: t = timing->udma ? (0xe0 | (FIT(timing->udma, 2, 9) - 2)) : 0x07; break; - default: return; - } - - pci_write_config_byte(dev, VIA_UDMA_TIMING + (3 - dn), t); -} - -/** - * via_set_drive - configure transfer mode - * @drive: Drive to set up - * @speed: desired speed - * - * via_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 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; - - if (speed != XFER_PIO_SLOW) - ide_config_drive_speed(drive, speed); - - T = 1000000000 / via_clock; - - 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; - case VIA_UDMA_133: UT = T/4; break; - default: UT = T; - } - - 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); - } - - via_set_speed(HWIF(drive), drive->dn, &t); - - if (!drive->init_speed) - drive->init_speed = speed; - drive->current_speed = speed; - - return 0; -} - -/** - * via82cxxx_tune_drive - PIO setup - * @drive: drive to set up - * @pio: mode to use (255 for 'best possible') - * - * A callback from the upper layers for PIO-only tuning. - */ - -static void via82cxxx_tune_drive(ide_drive_t *drive, u8 pio) -{ - if (pio == 255) { - via_set_drive(drive, - ide_find_best_mode(drive, XFER_PIO | XFER_EPIO)); - return; - } - - via_set_drive(drive, XFER_PIO_0 + min_t(u8, pio, 5)); -} - -/** - * via82cxxx_ide_dma_check - set up for DMA if possible - * @drive: IDE drive to set up - * - * Set up the drive for the highest supported speed considering the - * driver, controller and cable - */ - -static int via82cxxx_ide_dma_check (ide_drive_t *drive) -{ - 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 | - (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->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; -} - -/** - * init_chipset_via82cxxx - initialization handler - * @dev: PCI device - * @name: Name of interface - * - * The initialization callback. Here we determine the IDE chip type - * and initialize its drive independent registers. - */ - -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; - - /* - * Find the ISA bridge to see how good the IDE is. - */ - via_config = via_config_find(&isa); - if (!via_config->id) { - printk(KERN_WARNING "VP_IDE: Unknown VIA SouthBridge, disabling DMA.\n"); - return -ENODEV; - } - - /* - * Setup or disable Clk66 if appropriate - */ - - 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); - } - - /* - * 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); - - /* - * Determine system bus clock. - */ - - via_clock = system_bus_clock() * 1000; - - switch (via_clock) { - case 33000: via_clock = 33333; break; - case 37000: via_clock = 37500; break; - case 41000: via_clock = 41666; break; - } - - if (via_clock < 20000 || via_clock > 50000) { - printk(KERN_WARNING "VP_IDE: User given PCI clock speed " - "impossible (%d), using 33 MHz instead.\n", via_clock); - printk(KERN_WARNING "VP_IDE: Use ide0=ata66 if you want " - "to assume 80-wire cable.\n"); - via_clock = 33333; - } - - /* - * Print the boot message. - */ - - pci_read_config_byte(isa, PCI_REVISION_ID, &t); - printk(KERN_INFO "VP_IDE: VIA %s (rev %02x) IDE %s " - "controller on pci%s\n", - via_config->name, t, - via_dma[via_config->flags & VIA_UDMA], - pci_name(dev)); - - 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; - - } -} - -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; - hwif->speedproc = &via_set_drive; - - -#if defined(CONFIG_PPC_CHRP) && defined(CONFIG_PPC32) - if(_machine == _MACH_chrp && _chrp_type == _CHRP_Pegasos) { - hwif->irq = hwif->channel ? 15 : 14; - } -#endif - - for (i = 0; i < 2; i++) { - hwif->drives[i].io_32bit = 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; - } - - 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 = (vdev->via_80w >> hwif->channel) & 1; - hwif->ide_dma_check = &via82cxxx_ide_dma_check; - if (!noautodma) - hwif->autodma = 1; - hwif->drives[0].autodma = hwif->autodma; - hwif->drives[1].autodma = hwif->autodma; -} - -static ide_pci_device_t via82cxxx_chipsets[] __devinitdata = { - { /* 0 */ - .name = "VP_IDE", - .init_chipset = init_chipset_via82cxxx, - .init_hwif = init_hwif_via82cxxx, - .channels = 2, - .autodma = NOAUTODMA, - .enablebits = {{0x40,0x02,0x02}, {0x40,0x01,0x01}}, - .bootable = ON_BOARD - },{ /* 1 */ - .name = "VP_IDE", - .init_chipset = init_chipset_via82cxxx, - .init_hwif = init_hwif_via82cxxx, - .channels = 2, - .autodma = AUTODMA, - .enablebits = {{0x00,0x00,0x00}, {0x00,0x00,0x00}}, - .bootable = ON_BOARD, - } -}; - -static int __devinit via_init_one(struct pci_dev *dev, const struct pci_device_id *id) -{ - return ide_setup_pci_device(dev, &via82cxxx_chipsets[id->driver_data]); -} - -static struct pci_device_id via_pci_tbl[] = { - { PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C576_1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, - { PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, - { PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_6410, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1}, - { 0, }, -}; -MODULE_DEVICE_TABLE(pci, via_pci_tbl); - -static struct pci_driver driver = { - .name = "VIA_IDE", - .id_table = via_pci_tbl, - .probe = via_init_one, -}; - -static int via_ide_init(void) -{ - return ide_pci_register_driver(&driver); -} - -module_init(via_ide_init); - -MODULE_AUTHOR("Vojtech Pavlik, Michel Aubry, Jeff Garzik, Andre Hedrick"); -MODULE_DESCRIPTION("PCI driver module for VIA IDE"); -MODULE_LICENSE("GPL"); |