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/drivers/ide/pci/triflex.c

https://bitbucket.org/evzijst/gittest
C | 188 lines | 134 code | 26 blank | 28 comment | 6 complexity | 97f656033cc39a2909e4bf27c60d82fa MD5 | raw file
  1/*
  2 * triflex.c
  3 * 
  4 * IDE Chipset driver for the Compaq TriFlex IDE controller.
  5 * 
  6 * Known to work with the Compaq Workstation 5x00 series.
  7 *
  8 * Copyright (C) 2002 Hewlett-Packard Development Group, L.P.
  9 * Author: Torben Mathiasen <torben.mathiasen@hp.com>
 10 *
 11 * This program is free software; you can redistribute it and/or modify
 12 * it under the terms of the GNU General Public License version 2 as
 13 * published by the Free Software Foundation.
 14 *
 15 * This program is distributed in the hope that it will be useful,
 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 18 * GNU General Public License for more details.
 19 *
 20 * You should have received a copy of the GNU General Public License
 21 * along with this program; if not, write to the Free Software
 22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 23 * 
 24 * Loosely based on the piix & svwks drivers.
 25 *
 26 * Documentation:
 27 *	Not publically available.
 28 */
 29
 30#include <linux/config.h>
 31#include <linux/types.h>
 32#include <linux/module.h>
 33#include <linux/kernel.h>
 34#include <linux/delay.h>
 35#include <linux/timer.h>
 36#include <linux/mm.h>
 37#include <linux/ioport.h>
 38#include <linux/blkdev.h>
 39#include <linux/hdreg.h>
 40#include <linux/pci.h>
 41#include <linux/ide.h>
 42#include <linux/init.h>
 43
 44static int triflex_tune_chipset(ide_drive_t *drive, u8 xferspeed)
 45{
 46	ide_hwif_t *hwif = HWIF(drive);
 47	struct pci_dev *dev = hwif->pci_dev;
 48	u8 channel_offset = hwif->channel ? 0x74 : 0x70;
 49	u16 timing = 0;
 50	u32 triflex_timings = 0;
 51	u8 unit = (drive->select.b.unit & 0x01);
 52	u8 speed = ide_rate_filter(0, xferspeed);
 53	
 54	pci_read_config_dword(dev, channel_offset, &triflex_timings);
 55	
 56	switch(speed) {
 57		case XFER_MW_DMA_2:
 58			timing = 0x0103; 
 59			break;
 60		case XFER_MW_DMA_1:
 61			timing = 0x0203;
 62			break;
 63		case XFER_MW_DMA_0:
 64			timing = 0x0808;
 65			break;
 66		case XFER_SW_DMA_2:
 67		case XFER_SW_DMA_1:
 68		case XFER_SW_DMA_0:
 69			timing = 0x0f0f;
 70			break;
 71		case XFER_PIO_4:
 72			timing = 0x0202;
 73			break;
 74		case XFER_PIO_3:
 75			timing = 0x0204;
 76			break;
 77		case XFER_PIO_2:
 78			timing = 0x0404;
 79			break;
 80		case XFER_PIO_1:
 81			timing = 0x0508;
 82			break;
 83		case XFER_PIO_0:
 84			timing = 0x0808;
 85			break;
 86		default:
 87			return -1;
 88	}
 89
 90	triflex_timings &= ~(0xFFFF << (16 * unit));
 91	triflex_timings |= (timing << (16 * unit));
 92	
 93	pci_write_config_dword(dev, channel_offset, triflex_timings);
 94	
 95	return (ide_config_drive_speed(drive, speed));
 96}
 97
 98static void triflex_tune_drive(ide_drive_t *drive, u8 pio)
 99{
100	int use_pio = ide_get_best_pio_mode(drive, pio, 4, NULL);
101	(void) triflex_tune_chipset(drive, (XFER_PIO_0 + use_pio));
102}
103
104static int triflex_config_drive_for_dma(ide_drive_t *drive)
105{
106	int speed = ide_dma_speed(drive, 0); /* No ultra speeds */
107
108	if (!speed) { 
109		u8 pspeed = ide_get_best_pio_mode(drive, 255, 4, NULL);
110		speed = XFER_PIO_0 + pspeed;
111	}
112	
113	(void) triflex_tune_chipset(drive, speed);
114	 return ide_dma_enable(drive);
115}
116
117static int triflex_config_drive_xfer_rate(ide_drive_t *drive)
118{
119	ide_hwif_t *hwif	= HWIF(drive);
120	struct hd_driveid *id	= drive->id;
121
122	if ((id->capability & 1) && drive->autodma) {
123		if (ide_use_dma(drive)) {
124			if (triflex_config_drive_for_dma(drive))
125				return hwif->ide_dma_on(drive);
126		}
127	}
128
129	hwif->tuneproc(drive, 255);
130	return hwif->ide_dma_off_quietly(drive);
131}
132
133static void __init init_hwif_triflex(ide_hwif_t *hwif)
134{
135	hwif->tuneproc = &triflex_tune_drive;
136	hwif->speedproc = &triflex_tune_chipset;
137
138	hwif->atapi_dma  = 1;
139	hwif->mwdma_mask = 0x07;
140	hwif->swdma_mask = 0x07;
141	hwif->ide_dma_check = &triflex_config_drive_xfer_rate;
142	
143	if (!noautodma)
144		hwif->autodma = 1;
145	hwif->drives[0].autodma = hwif->autodma;
146	hwif->drives[1].autodma = hwif->autodma;
147}
148
149static ide_pci_device_t triflex_device __devinitdata = {
150	.name		= "TRIFLEX",
151	.init_hwif	= init_hwif_triflex,
152	.channels	= 2,
153	.autodma	= AUTODMA,
154	.enablebits	= {{0x80, 0x01, 0x01}, {0x80, 0x02, 0x02}},
155	.bootable	= ON_BOARD,
156};
157
158static int __devinit triflex_init_one(struct pci_dev *dev, 
159		const struct pci_device_id *id)
160{
161	return ide_setup_pci_device(dev, &triflex_device);
162}
163
164static struct pci_device_id triflex_pci_tbl[] = {
165	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_TRIFLEX_IDE,
166	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
167	{ 0, },
168};
169MODULE_DEVICE_TABLE(pci, triflex_pci_tbl);
170
171static struct pci_driver driver = {
172	.name		= "TRIFLEX_IDE",
173	.id_table	= triflex_pci_tbl,
174	.probe		= triflex_init_one,
175};
176
177static int triflex_ide_init(void)
178{
179	return ide_pci_register_driver(&driver);
180}
181
182module_init(triflex_ide_init);
183
184MODULE_AUTHOR("Torben Mathiasen");
185MODULE_DESCRIPTION("PCI driver module for Compaq Triflex IDE");
186MODULE_LICENSE("GPL");
187
188