[mirror_ubuntu-artful-kernel.git] / drivers / ide / pci / triflex.c

/*
 * triflex.c
 * 
 * IDE Chipset driver for the Compaq TriFlex IDE controller.
 * 
 * Known to work with the Compaq Workstation 5x00 series.
 *
 * Copyright (C) 2002 Hewlett-Packard Development Group, L.P.
 * Author: Torben Mathiasen <torben.mathiasen@hp.com>
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * 
 * Loosely based on the piix & svwks drivers.
 *
 * Documentation:
 *	Not publically available.
 */

#include <linux/types.h>
#include <linux/module.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/pci.h>
#include <linux/ide.h>
#include <linux/init.h>

static int triflex_tune_chipset(ide_drive_t *drive, u8 xferspeed)
{
	ide_hwif_t *hwif = HWIF(drive);
	struct pci_dev *dev = hwif->pci_dev;
	u8 channel_offset = hwif->channel ? 0x74 : 0x70;
	u16 timing = 0;
	u32 triflex_timings = 0;
	u8 unit = (drive->select.b.unit & 0x01);
	u8 speed = ide_rate_filter(drive, xferspeed);
	
	pci_read_config_dword(dev, channel_offset, &triflex_timings);
	
	switch(speed) {
		case XFER_MW_DMA_2:
			timing = 0x0103; 
			break;
		case XFER_MW_DMA_1:
			timing = 0x0203;
			break;
		case XFER_MW_DMA_0:
			timing = 0x0808;
			break;
		case XFER_SW_DMA_2:
		case XFER_SW_DMA_1:
		case XFER_SW_DMA_0:
			timing = 0x0f0f;
			break;
		case XFER_PIO_4:
			timing = 0x0202;
			break;
		case XFER_PIO_3:
			timing = 0x0204;
			break;
		case XFER_PIO_2:
			timing = 0x0404;
			break;
		case XFER_PIO_1:
			timing = 0x0508;
			break;
		case XFER_PIO_0:
			timing = 0x0808;
			break;
		default:
			return -1;
	}

	triflex_timings &= ~(0xFFFF << (16 * unit));
	triflex_timings |= (timing << (16 * unit));
	
	pci_write_config_dword(dev, channel_offset, triflex_timings);
	
	return (ide_config_drive_speed(drive, speed));
}

static void triflex_tune_drive(ide_drive_t *drive, u8 pio)
{
	int use_pio = ide_get_best_pio_mode(drive, pio, 4, NULL);
	(void) triflex_tune_chipset(drive, (XFER_PIO_0 + use_pio));
}

static int triflex_config_drive_xfer_rate(ide_drive_t *drive)
{
	if (ide_tune_dma(drive))
		return 0;

	triflex_tune_drive(drive, 255);

	return -1;
}

static void __devinit init_hwif_triflex(ide_hwif_t *hwif)
{
	hwif->tuneproc = &triflex_tune_drive;
	hwif->speedproc = &triflex_tune_chipset;

	hwif->atapi_dma  = 1;
	hwif->mwdma_mask = 0x07;
	hwif->swdma_mask = 0x07;
	hwif->ide_dma_check = &triflex_config_drive_xfer_rate;
	
	if (!noautodma)
		hwif->autodma = 1;
	hwif->drives[0].autodma = hwif->autodma;
	hwif->drives[1].autodma = hwif->autodma;
}

static ide_pci_device_t triflex_device __devinitdata = {
	.name		= "TRIFLEX",
	.init_hwif	= init_hwif_triflex,
	.channels	= 2,
	.autodma	= AUTODMA,
	.enablebits	= {{0x80, 0x01, 0x01}, {0x80, 0x02, 0x02}},
	.bootable	= ON_BOARD,
};

static int __devinit triflex_init_one(struct pci_dev *dev, 
		const struct pci_device_id *id)
{
	return ide_setup_pci_device(dev, &triflex_device);
}

static struct pci_device_id triflex_pci_tbl[] = {
	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_TRIFLEX_IDE,
	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
	{ 0, },
};
MODULE_DEVICE_TABLE(pci, triflex_pci_tbl);

static struct pci_driver driver = {
	.name		= "TRIFLEX_IDE",
	.id_table	= triflex_pci_tbl,
	.probe		= triflex_init_one,
};

static int __init triflex_ide_init(void)
{
	return ide_pci_register_driver(&driver);
}

module_init(triflex_ide_init);

MODULE_AUTHOR("Torben Mathiasen");
MODULE_DESCRIPTION("PCI driver module for Compaq Triflex IDE");
MODULE_LICENSE("GPL");
Commit	Line	Data
1da177e4 LT	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
1da177e4 LT	30	#include <linux/types.h>
	31	#include <linux/module.h>
	32	#include <linux/kernel.h>
	33	#include <linux/delay.h>
	34	#include <linux/timer.h>
	35	#include <linux/mm.h>
	36	#include <linux/ioport.h>
	37	#include <linux/blkdev.h>
	38	#include <linux/hdreg.h>
	39	#include <linux/pci.h>
	40	#include <linux/ide.h>
	41	#include <linux/init.h>
	42
	43	static int triflex_tune_chipset(ide_drive_t *drive, u8 xferspeed)
	44	{
	45	ide_hwif_t *hwif = HWIF(drive);
	46	struct pci_dev *dev = hwif->pci_dev;
	47	u8 channel_offset = hwif->channel ? 0x74 : 0x70;
	48	u16 timing = 0;
	49	u32 triflex_timings = 0;
	50	u8 unit = (drive->select.b.unit & 0x01);
2d5eaa6d	51	u8 speed = ide_rate_filter(drive, xferspeed);
1da177e4 LT	52
	53	pci_read_config_dword(dev, channel_offset, &triflex_timings);
	54
	55	switch(speed) {
	56	case XFER_MW_DMA_2:
	57	timing = 0x0103;
	58	break;
	59	case XFER_MW_DMA_1:
	60	timing = 0x0203;
	61	break;
	62	case XFER_MW_DMA_0:
	63	timing = 0x0808;
	64	break;
	65	case XFER_SW_DMA_2:
	66	case XFER_SW_DMA_1:
	67	case XFER_SW_DMA_0:
	68	timing = 0x0f0f;
	69	break;
	70	case XFER_PIO_4:
	71	timing = 0x0202;
	72	break;
	73	case XFER_PIO_3:
	74	timing = 0x0204;
	75	break;
	76	case XFER_PIO_2:
	77	timing = 0x0404;
	78	break;
	79	case XFER_PIO_1:
	80	timing = 0x0508;
	81	break;
	82	case XFER_PIO_0:
	83	timing = 0x0808;
	84	break;
	85	default:
	86	return -1;
	87	}
	88
	89	triflex_timings &= ~(0xFFFF << (16 * unit));
	90	triflex_timings \|= (timing << (16 * unit));
	91
	92	pci_write_config_dword(dev, channel_offset, triflex_timings);
	93
	94	return (ide_config_drive_speed(drive, speed));
	95	}
	96
	97	static void triflex_tune_drive(ide_drive_t *drive, u8 pio)
	98	{
	99	int use_pio = ide_get_best_pio_mode(drive, pio, 4, NULL);
	100	(void) triflex_tune_chipset(drive, (XFER_PIO_0 + use_pio));
	101	}
	102
1da177e4 LT	103	static int triflex_config_drive_xfer_rate(ide_drive_t *drive)
1da177e4 LT	104	{
29e744d0	105	if (ide_tune_dma(drive))
3608b5d7 BZ	106	return 0;
	107
	108	triflex_tune_drive(drive, 255);
1da177e4	109
3608b5d7	110	return -1;
1da177e4 LT	111	}
1da177e4 LT	112
d6904ab6	113	static void __devinit init_hwif_triflex(ide_hwif_t *hwif)
1da177e4 LT	114	{
	115	hwif->tuneproc = &triflex_tune_drive;
	116	hwif->speedproc = &triflex_tune_chipset;
	117
	118	hwif->atapi_dma = 1;
	119	hwif->mwdma_mask = 0x07;
	120	hwif->swdma_mask = 0x07;
	121	hwif->ide_dma_check = &triflex_config_drive_xfer_rate;
	122
	123	if (!noautodma)
	124	hwif->autodma = 1;
	125	hwif->drives[0].autodma = hwif->autodma;
	126	hwif->drives[1].autodma = hwif->autodma;
	127	}
	128
	129	static ide_pci_device_t triflex_device __devinitdata = {
	130	.name = "TRIFLEX",
	131	.init_hwif = init_hwif_triflex,
	132	.channels = 2,
	133	.autodma = AUTODMA,
	134	.enablebits = {{0x80, 0x01, 0x01}, {0x80, 0x02, 0x02}},
	135	.bootable = ON_BOARD,
	136	};
	137
	138	static int __devinit triflex_init_one(struct pci_dev *dev,
	139	const struct pci_device_id *id)
	140	{
	141	return ide_setup_pci_device(dev, &triflex_device);
	142	}
	143
	144	static struct pci_device_id triflex_pci_tbl[] = {
	145	{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_TRIFLEX_IDE,
	146	PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
	147	{ 0, },
	148	};
	149	MODULE_DEVICE_TABLE(pci, triflex_pci_tbl);
	150
	151	static struct pci_driver driver = {
	152	.name = "TRIFLEX_IDE",
	153	.id_table = triflex_pci_tbl,
	154	.probe = triflex_init_one,
	155	};
	156
82ab1eec	157	static int __init triflex_ide_init(void)
1da177e4 LT	158	{
	159	return ide_pci_register_driver(&driver);
	160	}
	161
	162	module_init(triflex_ide_init);
	163
	164	MODULE_AUTHOR("Torben Mathiasen");
	165	MODULE_DESCRIPTION("PCI driver module for Compaq Triflex IDE");
	166	MODULE_LICENSE("GPL");
	167
	168