[linux.git] / drivers / ide / 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 <[email protected]>
 *
 * 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 publicly available.
 */

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

#define DRV_NAME "triflex"

static void triflex_set_mode(ide_hwif_t *hwif, ide_drive_t *drive)
{
	struct pci_dev *dev = to_pci_dev(hwif->dev);
	u32 triflex_timings = 0;
	u16 timing = 0;
	u8 channel_offset = hwif->channel ? 0x74 : 0x70, unit = drive->dn & 1;

	pci_read_config_dword(dev, channel_offset, &triflex_timings);

	switch (drive->dma_mode) {
		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;
	}

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

static void triflex_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
{
	drive->dma_mode = drive->pio_mode;
	triflex_set_mode(hwif, drive);
}

static const struct ide_port_ops triflex_port_ops = {
	.set_pio_mode		= triflex_set_pio_mode,
	.set_dma_mode		= triflex_set_mode,
};

static const struct ide_port_info triflex_device = {
	.name		= DRV_NAME,
	.enablebits	= {{0x80, 0x01, 0x01}, {0x80, 0x02, 0x02}},
	.port_ops	= &triflex_port_ops,
	.pio_mask	= ATA_PIO4,
	.swdma_mask	= ATA_SWDMA2,
	.mwdma_mask	= ATA_MWDMA2,
};

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

static const struct pci_device_id triflex_pci_tbl[] = {
	{ PCI_VDEVICE(COMPAQ, PCI_DEVICE_ID_COMPAQ_TRIFLEX_IDE), 0 },
	{ 0, },
};
MODULE_DEVICE_TABLE(pci, triflex_pci_tbl);

#ifdef CONFIG_PM
static int triflex_ide_pci_suspend(struct pci_dev *dev, pm_message_t state)
{
	/*
	 * We must not disable or powerdown the device.
	 * APM bios refuses to suspend if IDE is not accessible.
	 */
	pci_save_state(dev);
	return 0;
}
#else
#define triflex_ide_pci_suspend NULL
#endif

static struct pci_driver triflex_pci_driver = {
	.name		= "TRIFLEX_IDE",
	.id_table	= triflex_pci_tbl,
	.probe		= triflex_init_one,
	.remove		= ide_pci_remove,
	.suspend	= triflex_ide_pci_suspend,
	.resume		= ide_pci_resume,
};

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

static void __exit triflex_ide_exit(void)
{
	pci_unregister_driver(&triflex_pci_driver);
}

module_init(triflex_ide_init);
module_exit(triflex_ide_exit);

MODULE_AUTHOR("Torben Mathiasen");
MODULE_DESCRIPTION("PCI driver module for Compaq Triflex IDE");
MODULE_LICENSE("GPL");
Commit	Line	Data
1da177e4	1	/*
1da177e4 LT	2	* IDE Chipset driver for the Compaq TriFlex IDE controller.
	3	*
	4	* Known to work with the Compaq Workstation 5x00 series.
	5	*
	6	* Copyright (C) 2002 Hewlett-Packard Development Group, L.P.
	7	* Author: Torben Mathiasen <[email protected]>
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License version 2 as
	11	* published by the Free Software Foundation.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	21	*
	22	* Loosely based on the piix & svwks drivers.
	23	*
	24	* Documentation:
25985edc	25	* Not publicly available.
1da177e4 LT	26	*/
1da177e4 LT	27
1da177e4 LT	28	#include <linux/types.h>
	29	#include <linux/module.h>
	30	#include <linux/kernel.h>
1da177e4 LT	31	#include <linux/pci.h>
	32	#include <linux/ide.h>
	33	#include <linux/init.h>
	34
ced3ec8a BZ	35	#define DRV_NAME "triflex"
ced3ec8a BZ	36
8776168c	37	static void triflex_set_mode(ide_hwif_t hwif, ide_drive_t drive)
1da177e4	38	{
36501650	39	struct pci_dev *dev = to_pci_dev(hwif->dev);
1da177e4	40	u32 triflex_timings = 0;
123995b9 BZ	41	u16 timing = 0;
	42	u8 channel_offset = hwif->channel ? 0x74 : 0x70, unit = drive->dn & 1;
	43
1da177e4	44	pci_read_config_dword(dev, channel_offset, &triflex_timings);
123995b9	45
8776168c	46	switch (drive->dma_mode) {
1da177e4 LT	47	case XFER_MW_DMA_2:
	48	timing = 0x0103;
	49	break;
	50	case XFER_MW_DMA_1:
	51	timing = 0x0203;
	52	break;
	53	case XFER_MW_DMA_0:
	54	timing = 0x0808;
	55	break;
	56	case XFER_SW_DMA_2:
	57	case XFER_SW_DMA_1:
	58	case XFER_SW_DMA_0:
	59	timing = 0x0f0f;
	60	break;
	61	case XFER_PIO_4:
	62	timing = 0x0202;
	63	break;
	64	case XFER_PIO_3:
	65	timing = 0x0204;
	66	break;
	67	case XFER_PIO_2:
	68	timing = 0x0404;
	69	break;
	70	case XFER_PIO_1:
	71	timing = 0x0508;
	72	break;
	73	case XFER_PIO_0:
	74	timing = 0x0808;
	75	break;
1da177e4 LT	76	}
	77
	78	triflex_timings &= ~(0xFFFF << (16 * unit));
	79	triflex_timings \|= (timing << (16 * unit));
	80
	81	pci_write_config_dword(dev, channel_offset, triflex_timings);
1da177e4 LT	82	}
1da177e4 LT	83
e085b3ca	84	static void triflex_set_pio_mode(ide_hwif_t hwif, ide_drive_t drive)
1da177e4	85	{
8776168c BZ	86	drive->dma_mode = drive->pio_mode;
8776168c BZ	87	triflex_set_mode(hwif, drive);
1da177e4 LT	88	}
1da177e4 LT	89
ac95beed BZ	90	static const struct ide_port_ops triflex_port_ops = {
	91	.set_pio_mode = triflex_set_pio_mode,
	92	.set_dma_mode = triflex_set_mode,
	93	};
1da177e4	94
fe31edc8	95	static const struct ide_port_info triflex_device = {
ced3ec8a	96	.name = DRV_NAME,
1da177e4	97	.enablebits = {{0x80, 0x01, 0x01}, {0x80, 0x02, 0x02}},
ac95beed	98	.port_ops = &triflex_port_ops,
4099d143	99	.pio_mask = ATA_PIO4,
5f8b6c34 BZ	100	.swdma_mask = ATA_SWDMA2,
5f8b6c34 BZ	101	.mwdma_mask = ATA_MWDMA2,
1da177e4 LT	102	};
1da177e4 LT	103
fe31edc8	104	static int triflex_init_one(struct pci_dev dev, const struct pci_device_id id)
1da177e4	105	{
6cdf6eb3	106	return ide_pci_init_one(dev, &triflex_device, NULL);
1da177e4 LT	107	}
1da177e4 LT	108
9cbcc5e3 BZ	109	static const struct pci_device_id triflex_pci_tbl[] = {
9cbcc5e3 BZ	110	{ PCI_VDEVICE(COMPAQ, PCI_DEVICE_ID_COMPAQ_TRIFLEX_IDE), 0 },
1da177e4 LT	111	{ 0, },
	112	};
	113	MODULE_DEVICE_TABLE(pci, triflex_pci_tbl);
	114
839e7306 MP	115	#ifdef CONFIG_PM
	116	static int triflex_ide_pci_suspend(struct pci_dev *dev, pm_message_t state)
	117	{
	118	/*
	119	* We must not disable or powerdown the device.
	120	* APM bios refuses to suspend if IDE is not accessible.
	121	*/
	122	pci_save_state(dev);
	123	return 0;
	124	}
	125	#else
	126	#define triflex_ide_pci_suspend NULL
	127	#endif
	128
a9ab09e2	129	static struct pci_driver triflex_pci_driver = {
1da177e4 LT	130	.name = "TRIFLEX_IDE",
	131	.id_table = triflex_pci_tbl,
	132	.probe = triflex_init_one,
29d72f2d	133	.remove = ide_pci_remove,
839e7306	134	.suspend = triflex_ide_pci_suspend,
feb22b7f	135	.resume = ide_pci_resume,
1da177e4 LT	136	};
1da177e4 LT	137
82ab1eec	138	static int __init triflex_ide_init(void)
1da177e4	139	{
a9ab09e2	140	return ide_pci_register_driver(&triflex_pci_driver);
1da177e4 LT	141	}
1da177e4 LT	142
29d72f2d BZ	143	static void __exit triflex_ide_exit(void)
29d72f2d BZ	144	{
a9ab09e2	145	pci_unregister_driver(&triflex_pci_driver);
29d72f2d BZ	146	}
29d72f2d BZ	147
1da177e4	148	module_init(triflex_ide_init);
29d72f2d	149	module_exit(triflex_ide_exit);
1da177e4 LT	150
	151	MODULE_AUTHOR("Torben Mathiasen");
	152	MODULE_DESCRIPTION("PCI driver module for Compaq Triflex IDE");
	153	MODULE_LICENSE("GPL");
	154
	155