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5993856e53
This patch adds the PCI Device ID 0xc409 to the PCI ID table of via82cxxx.c, as well as the 0x8409 south bridge ID. This is required to make the IDE driver work on the VX855/VX875 integrated chipset. Signed-off-by: Harald Welte <HaraldWelte@viatech.com> Cc: Joseph Chan <JosephChan@via.com.tw> Cc: Bruce Chang <BruceChang@via.com.tw> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
510 lines
14 KiB
C
510 lines
14 KiB
C
/*
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* VIA IDE driver for Linux. Supported southbridges:
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*
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* vt82c576, vt82c586, vt82c586a, vt82c586b, vt82c596a, vt82c596b,
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* vt82c686, vt82c686a, vt82c686b, vt8231, vt8233, vt8233c, vt8233a,
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* vt8235, vt8237, vt8237a
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*
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* Copyright (c) 2000-2002 Vojtech Pavlik
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* Copyright (c) 2007 Bartlomiej Zolnierkiewicz
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*
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* Based on the work of:
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* Michel Aubry
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* Jeff Garzik
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* Andre Hedrick
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*
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* Documentation:
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* Obsolete device documentation publically available from via.com.tw
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* Current device documentation available under NDA only
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*/
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/*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/pci.h>
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#include <linux/init.h>
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#include <linux/ide.h>
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#include <linux/dmi.h>
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#ifdef CONFIG_PPC_CHRP
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#include <asm/processor.h>
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#endif
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#define DRV_NAME "via82cxxx"
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#define VIA_IDE_ENABLE 0x40
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#define VIA_IDE_CONFIG 0x41
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#define VIA_FIFO_CONFIG 0x43
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#define VIA_MISC_1 0x44
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#define VIA_MISC_2 0x45
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#define VIA_MISC_3 0x46
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#define VIA_DRIVE_TIMING 0x48
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#define VIA_8BIT_TIMING 0x4e
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#define VIA_ADDRESS_SETUP 0x4c
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#define VIA_UDMA_TIMING 0x50
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#define VIA_BAD_PREQ 0x01 /* Crashes if PREQ# till DDACK# set */
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#define VIA_BAD_CLK66 0x02 /* 66 MHz clock doesn't work correctly */
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#define VIA_SET_FIFO 0x04 /* Needs to have FIFO split set */
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#define VIA_NO_UNMASK 0x08 /* Doesn't work with IRQ unmasking on */
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#define VIA_BAD_ID 0x10 /* Has wrong vendor ID (0x1107) */
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#define VIA_BAD_AST 0x20 /* Don't touch Address Setup Timing */
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/*
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* VIA SouthBridge chips.
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*/
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static struct via_isa_bridge {
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char *name;
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u16 id;
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u8 rev_min;
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u8 rev_max;
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u8 udma_mask;
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u8 flags;
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} via_isa_bridges[] = {
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{ "vx855", PCI_DEVICE_ID_VIA_VX855, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
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{ "vx800", PCI_DEVICE_ID_VIA_VX800, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
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{ "cx700", PCI_DEVICE_ID_VIA_CX700, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
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{ "vt8237s", PCI_DEVICE_ID_VIA_8237S, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
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{ "vt6410", PCI_DEVICE_ID_VIA_6410, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
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{ "vt8251", PCI_DEVICE_ID_VIA_8251, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
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{ "vt8237", PCI_DEVICE_ID_VIA_8237, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
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{ "vt8237a", PCI_DEVICE_ID_VIA_8237A, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
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{ "vt8235", PCI_DEVICE_ID_VIA_8235, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
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{ "vt8233a", PCI_DEVICE_ID_VIA_8233A, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
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{ "vt8233c", PCI_DEVICE_ID_VIA_8233C_0, 0x00, 0x2f, ATA_UDMA5, },
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{ "vt8233", PCI_DEVICE_ID_VIA_8233_0, 0x00, 0x2f, ATA_UDMA5, },
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{ "vt8231", PCI_DEVICE_ID_VIA_8231, 0x00, 0x2f, ATA_UDMA5, },
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{ "vt82c686b", PCI_DEVICE_ID_VIA_82C686, 0x40, 0x4f, ATA_UDMA5, },
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{ "vt82c686a", PCI_DEVICE_ID_VIA_82C686, 0x10, 0x2f, ATA_UDMA4, },
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{ "vt82c686", PCI_DEVICE_ID_VIA_82C686, 0x00, 0x0f, ATA_UDMA2, VIA_BAD_CLK66 },
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{ "vt82c596b", PCI_DEVICE_ID_VIA_82C596, 0x10, 0x2f, ATA_UDMA4, },
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{ "vt82c596a", PCI_DEVICE_ID_VIA_82C596, 0x00, 0x0f, ATA_UDMA2, VIA_BAD_CLK66 },
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{ "vt82c586b", PCI_DEVICE_ID_VIA_82C586_0, 0x47, 0x4f, ATA_UDMA2, VIA_SET_FIFO },
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{ "vt82c586b", PCI_DEVICE_ID_VIA_82C586_0, 0x40, 0x46, ATA_UDMA2, VIA_SET_FIFO | VIA_BAD_PREQ },
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{ "vt82c586b", PCI_DEVICE_ID_VIA_82C586_0, 0x30, 0x3f, ATA_UDMA2, VIA_SET_FIFO },
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{ "vt82c586a", PCI_DEVICE_ID_VIA_82C586_0, 0x20, 0x2f, ATA_UDMA2, VIA_SET_FIFO },
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{ "vt82c586", PCI_DEVICE_ID_VIA_82C586_0, 0x00, 0x0f, 0x00, VIA_SET_FIFO },
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{ "vt82c576", PCI_DEVICE_ID_VIA_82C576, 0x00, 0x2f, 0x00, VIA_SET_FIFO | VIA_NO_UNMASK },
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{ "vt82c576", PCI_DEVICE_ID_VIA_82C576, 0x00, 0x2f, 0x00, VIA_SET_FIFO | VIA_NO_UNMASK | VIA_BAD_ID },
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{ NULL }
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};
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static unsigned int via_clock;
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static char *via_dma[] = { "16", "25", "33", "44", "66", "100", "133" };
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struct via82cxxx_dev
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{
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struct via_isa_bridge *via_config;
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unsigned int via_80w;
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};
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/**
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* via_set_speed - write timing registers
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* @dev: PCI device
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* @dn: device
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* @timing: IDE timing data to use
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*
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* via_set_speed writes timing values to the chipset registers
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*/
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static void via_set_speed(ide_hwif_t *hwif, u8 dn, struct ide_timing *timing)
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{
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struct pci_dev *dev = to_pci_dev(hwif->dev);
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struct ide_host *host = pci_get_drvdata(dev);
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struct via82cxxx_dev *vdev = host->host_priv;
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u8 t;
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if (~vdev->via_config->flags & VIA_BAD_AST) {
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pci_read_config_byte(dev, VIA_ADDRESS_SETUP, &t);
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t = (t & ~(3 << ((3 - dn) << 1))) | ((clamp_val(timing->setup, 1, 4) - 1) << ((3 - dn) << 1));
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pci_write_config_byte(dev, VIA_ADDRESS_SETUP, t);
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}
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pci_write_config_byte(dev, VIA_8BIT_TIMING + (1 - (dn >> 1)),
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((clamp_val(timing->act8b, 1, 16) - 1) << 4) | (clamp_val(timing->rec8b, 1, 16) - 1));
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pci_write_config_byte(dev, VIA_DRIVE_TIMING + (3 - dn),
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((clamp_val(timing->active, 1, 16) - 1) << 4) | (clamp_val(timing->recover, 1, 16) - 1));
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switch (vdev->via_config->udma_mask) {
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case ATA_UDMA2: t = timing->udma ? (0xe0 | (clamp_val(timing->udma, 2, 5) - 2)) : 0x03; break;
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case ATA_UDMA4: t = timing->udma ? (0xe8 | (clamp_val(timing->udma, 2, 9) - 2)) : 0x0f; break;
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case ATA_UDMA5: t = timing->udma ? (0xe0 | (clamp_val(timing->udma, 2, 9) - 2)) : 0x07; break;
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case ATA_UDMA6: t = timing->udma ? (0xe0 | (clamp_val(timing->udma, 2, 9) - 2)) : 0x07; break;
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default: return;
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}
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pci_write_config_byte(dev, VIA_UDMA_TIMING + (3 - dn), t);
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}
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/**
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* via_set_drive - configure transfer mode
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* @drive: Drive to set up
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* @speed: desired speed
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*
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* via_set_drive() computes timing values configures the chipset to
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* a desired transfer mode. It also can be called by upper layers.
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*/
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static void via_set_drive(ide_drive_t *drive, const u8 speed)
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{
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ide_hwif_t *hwif = drive->hwif;
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ide_drive_t *peer = ide_get_pair_dev(drive);
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struct pci_dev *dev = to_pci_dev(hwif->dev);
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struct ide_host *host = pci_get_drvdata(dev);
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struct via82cxxx_dev *vdev = host->host_priv;
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struct ide_timing t, p;
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unsigned int T, UT;
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T = 1000000000 / via_clock;
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switch (vdev->via_config->udma_mask) {
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case ATA_UDMA2: UT = T; break;
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case ATA_UDMA4: UT = T/2; break;
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case ATA_UDMA5: UT = T/3; break;
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case ATA_UDMA6: UT = T/4; break;
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default: UT = T;
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}
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ide_timing_compute(drive, speed, &t, T, UT);
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if (peer) {
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ide_timing_compute(peer, peer->current_speed, &p, T, UT);
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ide_timing_merge(&p, &t, &t, IDE_TIMING_8BIT);
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}
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via_set_speed(hwif, drive->dn, &t);
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}
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/**
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* via_set_pio_mode - set host controller for PIO mode
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* @drive: drive
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* @pio: PIO mode number
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*
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* A callback from the upper layers for PIO-only tuning.
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*/
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static void via_set_pio_mode(ide_drive_t *drive, const u8 pio)
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{
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via_set_drive(drive, XFER_PIO_0 + pio);
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}
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static struct via_isa_bridge *via_config_find(struct pci_dev **isa)
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{
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struct via_isa_bridge *via_config;
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for (via_config = via_isa_bridges; via_config->id; via_config++)
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if ((*isa = pci_get_device(PCI_VENDOR_ID_VIA +
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!!(via_config->flags & VIA_BAD_ID),
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via_config->id, NULL))) {
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if ((*isa)->revision >= via_config->rev_min &&
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(*isa)->revision <= via_config->rev_max)
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break;
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pci_dev_put(*isa);
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}
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return via_config;
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}
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/*
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* Check and handle 80-wire cable presence
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*/
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static void via_cable_detect(struct via82cxxx_dev *vdev, u32 u)
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{
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int i;
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switch (vdev->via_config->udma_mask) {
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case ATA_UDMA4:
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for (i = 24; i >= 0; i -= 8)
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if (((u >> (i & 16)) & 8) &&
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((u >> i) & 0x20) &&
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(((u >> i) & 7) < 2)) {
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/*
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* 2x PCI clock and
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* UDMA w/ < 3T/cycle
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*/
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vdev->via_80w |= (1 << (1 - (i >> 4)));
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}
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break;
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case ATA_UDMA5:
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for (i = 24; i >= 0; i -= 8)
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if (((u >> i) & 0x10) ||
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(((u >> i) & 0x20) &&
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(((u >> i) & 7) < 4))) {
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/* BIOS 80-wire bit or
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* UDMA w/ < 60ns/cycle
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*/
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vdev->via_80w |= (1 << (1 - (i >> 4)));
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}
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break;
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case ATA_UDMA6:
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for (i = 24; i >= 0; i -= 8)
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if (((u >> i) & 0x10) ||
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(((u >> i) & 0x20) &&
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(((u >> i) & 7) < 6))) {
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/* BIOS 80-wire bit or
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* UDMA w/ < 60ns/cycle
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*/
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vdev->via_80w |= (1 << (1 - (i >> 4)));
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}
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break;
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}
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}
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/**
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* init_chipset_via82cxxx - initialization handler
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* @dev: PCI device
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*
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* The initialization callback. Here we determine the IDE chip type
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* and initialize its drive independent registers.
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*/
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static int init_chipset_via82cxxx(struct pci_dev *dev)
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{
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struct ide_host *host = pci_get_drvdata(dev);
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struct via82cxxx_dev *vdev = host->host_priv;
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struct via_isa_bridge *via_config = vdev->via_config;
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u8 t, v;
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u32 u;
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/*
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* Detect cable and configure Clk66
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*/
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pci_read_config_dword(dev, VIA_UDMA_TIMING, &u);
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via_cable_detect(vdev, u);
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if (via_config->udma_mask == ATA_UDMA4) {
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/* Enable Clk66 */
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pci_write_config_dword(dev, VIA_UDMA_TIMING, u|0x80008);
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} else if (via_config->flags & VIA_BAD_CLK66) {
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/* Would cause trouble on 596a and 686 */
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pci_write_config_dword(dev, VIA_UDMA_TIMING, u & ~0x80008);
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}
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/*
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* Check whether interfaces are enabled.
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*/
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pci_read_config_byte(dev, VIA_IDE_ENABLE, &v);
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/*
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* Set up FIFO sizes and thresholds.
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*/
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pci_read_config_byte(dev, VIA_FIFO_CONFIG, &t);
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/* Disable PREQ# till DDACK# */
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if (via_config->flags & VIA_BAD_PREQ) {
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/* Would crash on 586b rev 41 */
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t &= 0x7f;
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}
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/* Fix FIFO split between channels */
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if (via_config->flags & VIA_SET_FIFO) {
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t &= (t & 0x9f);
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switch (v & 3) {
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case 2: t |= 0x00; break; /* 16 on primary */
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case 1: t |= 0x60; break; /* 16 on secondary */
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case 3: t |= 0x20; break; /* 8 pri 8 sec */
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}
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}
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pci_write_config_byte(dev, VIA_FIFO_CONFIG, t);
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return 0;
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}
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/*
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* Cable special cases
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*/
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static const struct dmi_system_id cable_dmi_table[] = {
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{
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.ident = "Acer Ferrari 3400",
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.matches = {
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DMI_MATCH(DMI_BOARD_VENDOR, "Acer,Inc."),
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DMI_MATCH(DMI_BOARD_NAME, "Ferrari 3400"),
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},
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},
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{ }
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};
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static int via_cable_override(struct pci_dev *pdev)
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{
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/* Systems by DMI */
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if (dmi_check_system(cable_dmi_table))
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return 1;
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/* Arima W730-K8/Targa Visionary 811/... */
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if (pdev->subsystem_vendor == 0x161F &&
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pdev->subsystem_device == 0x2032)
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return 1;
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return 0;
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}
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static u8 via82cxxx_cable_detect(ide_hwif_t *hwif)
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{
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struct pci_dev *pdev = to_pci_dev(hwif->dev);
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struct ide_host *host = pci_get_drvdata(pdev);
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struct via82cxxx_dev *vdev = host->host_priv;
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if (via_cable_override(pdev))
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return ATA_CBL_PATA40_SHORT;
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if ((vdev->via_80w >> hwif->channel) & 1)
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return ATA_CBL_PATA80;
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else
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return ATA_CBL_PATA40;
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}
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static const struct ide_port_ops via_port_ops = {
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.set_pio_mode = via_set_pio_mode,
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.set_dma_mode = via_set_drive,
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.cable_detect = via82cxxx_cable_detect,
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};
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static const struct ide_port_info via82cxxx_chipset __devinitdata = {
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.name = DRV_NAME,
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.init_chipset = init_chipset_via82cxxx,
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.enablebits = { { 0x40, 0x02, 0x02 }, { 0x40, 0x01, 0x01 } },
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.port_ops = &via_port_ops,
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.host_flags = IDE_HFLAG_PIO_NO_BLACKLIST |
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IDE_HFLAG_POST_SET_MODE |
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IDE_HFLAG_IO_32BIT,
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.pio_mask = ATA_PIO5,
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.swdma_mask = ATA_SWDMA2,
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.mwdma_mask = ATA_MWDMA2,
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};
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static int __devinit via_init_one(struct pci_dev *dev, const struct pci_device_id *id)
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{
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struct pci_dev *isa = NULL;
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struct via_isa_bridge *via_config;
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struct via82cxxx_dev *vdev;
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int rc;
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u8 idx = id->driver_data;
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struct ide_port_info d;
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d = via82cxxx_chipset;
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/*
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* Find the ISA bridge and check we know what it is.
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*/
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via_config = via_config_find(&isa);
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if (!via_config->id) {
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printk(KERN_WARNING DRV_NAME " %s: unknown chipset, skipping\n",
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pci_name(dev));
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return -ENODEV;
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}
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/*
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* Print the boot message.
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*/
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printk(KERN_INFO DRV_NAME " %s: VIA %s (rev %02x) IDE %sDMA%s\n",
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pci_name(dev), via_config->name, isa->revision,
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via_config->udma_mask ? "U" : "MW",
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via_dma[via_config->udma_mask ?
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(fls(via_config->udma_mask) - 1) : 0]);
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pci_dev_put(isa);
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/*
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* Determine system bus clock.
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*/
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via_clock = (ide_pci_clk ? ide_pci_clk : 33) * 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 DRV_NAME ": User given PCI clock speed "
|
|
"impossible (%d), using 33 MHz instead.\n", via_clock);
|
|
via_clock = 33333;
|
|
}
|
|
|
|
if (idx == 0)
|
|
d.host_flags |= IDE_HFLAG_NO_AUTODMA;
|
|
else
|
|
d.enablebits[1].reg = d.enablebits[0].reg = 0;
|
|
|
|
if ((via_config->flags & VIA_NO_UNMASK) == 0)
|
|
d.host_flags |= IDE_HFLAG_UNMASK_IRQS;
|
|
|
|
d.udma_mask = via_config->udma_mask;
|
|
|
|
vdev = kzalloc(sizeof(*vdev), GFP_KERNEL);
|
|
if (!vdev) {
|
|
printk(KERN_ERR DRV_NAME " %s: out of memory :(\n",
|
|
pci_name(dev));
|
|
return -ENOMEM;
|
|
}
|
|
|
|
vdev->via_config = via_config;
|
|
|
|
rc = ide_pci_init_one(dev, &d, vdev);
|
|
if (rc)
|
|
kfree(vdev);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static void __devexit via_remove(struct pci_dev *dev)
|
|
{
|
|
struct ide_host *host = pci_get_drvdata(dev);
|
|
struct via82cxxx_dev *vdev = host->host_priv;
|
|
|
|
ide_pci_remove(dev);
|
|
kfree(vdev);
|
|
}
|
|
|
|
static const struct pci_device_id via_pci_tbl[] = {
|
|
{ PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_82C576_1), 0 },
|
|
{ PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_82C586_1), 0 },
|
|
{ PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_CX700_IDE), 0 },
|
|
{ PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_VX855_IDE), 0 },
|
|
{ PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_6410), 1 },
|
|
{ PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_SATA_EIDE), 1 },
|
|
{ 0, },
|
|
};
|
|
MODULE_DEVICE_TABLE(pci, via_pci_tbl);
|
|
|
|
static struct pci_driver via_pci_driver = {
|
|
.name = "VIA_IDE",
|
|
.id_table = via_pci_tbl,
|
|
.probe = via_init_one,
|
|
.remove = __devexit_p(via_remove),
|
|
.suspend = ide_pci_suspend,
|
|
.resume = ide_pci_resume,
|
|
};
|
|
|
|
static int __init via_ide_init(void)
|
|
{
|
|
return ide_pci_register_driver(&via_pci_driver);
|
|
}
|
|
|
|
static void __exit via_ide_exit(void)
|
|
{
|
|
pci_unregister_driver(&via_pci_driver);
|
|
}
|
|
|
|
module_init(via_ide_init);
|
|
module_exit(via_ide_exit);
|
|
|
|
MODULE_AUTHOR("Vojtech Pavlik, Michel Aubry, Jeff Garzik, Andre Hedrick");
|
|
MODULE_DESCRIPTION("PCI driver module for VIA IDE");
|
|
MODULE_LICENSE("GPL");
|