[linux-2.6-block.git] / drivers / ata / pata_isapnp.c


/*
 *   pata-isapnp.c - ISA PnP PATA controller driver.
 *   Copyright 2005/2006 Red Hat Inc <alan@redhat.com>, all rights reserved.
 *
 *   Based in part on ide-pnp.c by Andrey Panin <pazke@donpac.ru>
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/isapnp.h>
#include <linux/init.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <scsi/scsi_host.h>
#include <linux/ata.h>
#include <linux/libata.h>

#define DRV_NAME "pata_isapnp"
#define DRV_VERSION "0.2.2"

static struct scsi_host_template isapnp_sht = {
	.module			= THIS_MODULE,
	.name			= DRV_NAME,
	.ioctl			= ata_scsi_ioctl,
	.queuecommand		= ata_scsi_queuecmd,
	.can_queue		= ATA_DEF_QUEUE,
	.this_id		= ATA_SHT_THIS_ID,
	.sg_tablesize		= LIBATA_MAX_PRD,
	.cmd_per_lun		= ATA_SHT_CMD_PER_LUN,
	.emulated		= ATA_SHT_EMULATED,
	.use_clustering		= ATA_SHT_USE_CLUSTERING,
	.proc_name		= DRV_NAME,
	.dma_boundary		= ATA_DMA_BOUNDARY,
	.slave_configure	= ata_scsi_slave_config,
	.slave_destroy		= ata_scsi_slave_destroy,
	.bios_param		= ata_std_bios_param,
};

static struct ata_port_operations isapnp_port_ops = {
	.tf_load	= ata_tf_load,
	.tf_read	= ata_tf_read,
	.check_status 	= ata_check_status,
	.exec_command	= ata_exec_command,
	.dev_select 	= ata_std_dev_select,

	.freeze		= ata_bmdma_freeze,
	.thaw		= ata_bmdma_thaw,
	.error_handler	= ata_bmdma_error_handler,
	.post_internal_cmd = ata_bmdma_post_internal_cmd,
	.cable_detect	= ata_cable_40wire,

	.qc_prep 	= ata_qc_prep,
	.qc_issue	= ata_qc_issue_prot,

	.data_xfer	= ata_data_xfer,

	.irq_clear	= ata_bmdma_irq_clear,
	.irq_on		= ata_irq_on,

	.port_start	= ata_sff_port_start,
};

/**
 *	isapnp_init_one		-	attach an isapnp interface
 *	@idev: PnP device
 *	@dev_id: matching detect line
 *
 *	Register an ISA bus IDE interface. Such interfaces are PIO 0 and
 *	non shared IRQ.
 */

static int isapnp_init_one(struct pnp_dev *idev, const struct pnp_device_id *dev_id)
{
	struct ata_host *host;
	struct ata_port *ap;
	void __iomem *cmd_addr, *ctl_addr;

	if (pnp_port_valid(idev, 0) == 0)
		return -ENODEV;

	/* FIXME: Should selected polled PIO here not fail */
	if (pnp_irq_valid(idev, 0) == 0)
		return -ENODEV;

	/* allocate host */
	host = ata_host_alloc(&idev->dev, 1);
	if (!host)
		return -ENOMEM;

	/* acquire resources and fill host */
	cmd_addr = devm_ioport_map(&idev->dev, pnp_port_start(idev, 0), 8);
	if (!cmd_addr)
		return -ENOMEM;

	ap = host->ports[0];

	ap->ops = &isapnp_port_ops;
	ap->pio_mask = 1;
	ap->flags |= ATA_FLAG_SLAVE_POSS;

	ap->ioaddr.cmd_addr = cmd_addr;

	if (pnp_port_valid(idev, 1) == 0) {
		ctl_addr = devm_ioport_map(&idev->dev,
					   pnp_port_start(idev, 1), 1);
		ap->ioaddr.altstatus_addr = ctl_addr;
		ap->ioaddr.ctl_addr = ctl_addr;
	}

	ata_std_ports(&ap->ioaddr);

	ata_port_desc(ap, "cmd 0x%llx ctl 0x%llx",
		      (unsigned long long)pnp_port_start(idev, 0),
		      (unsigned long long)pnp_port_start(idev, 1));

	/* activate */
	return ata_host_activate(host, pnp_irq(idev, 0), ata_interrupt, 0,
				 &isapnp_sht);
}

/**
 *	isapnp_remove_one	-	unplug an isapnp interface
 *	@idev: PnP device
 *
 *	Remove a previously configured PnP ATA port. Called only on module
 *	unload events as the core does not currently deal with ISAPnP docking.
 */

static void isapnp_remove_one(struct pnp_dev *idev)
{
	struct device *dev = &idev->dev;
	struct ata_host *host = dev_get_drvdata(dev);

	ata_host_detach(host);
}

static struct pnp_device_id isapnp_devices[] = {
  	/* Generic ESDI/IDE/ATA compatible hard disk controller */
	{.id = "PNP0600", .driver_data = 0},
	{.id = ""}
};

MODULE_DEVICE_TABLE(pnp, isapnp_devices);

static struct pnp_driver isapnp_driver = {
	.name		= DRV_NAME,
	.id_table	= isapnp_devices,
	.probe		= isapnp_init_one,
	.remove		= isapnp_remove_one,
};

static int __init isapnp_init(void)
{
	return pnp_register_driver(&isapnp_driver);
}

static void __exit isapnp_exit(void)
{
	pnp_unregister_driver(&isapnp_driver);
}

MODULE_AUTHOR("Alan Cox");
MODULE_DESCRIPTION("low-level driver for ISA PnP ATA");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);

module_init(isapnp_init);
module_exit(isapnp_exit);
Commit	Line	Data
669a5db4 JG	1
	2	/*
	3	* pata-isapnp.c - ISA PnP PATA controller driver.
	4	* Copyright 2005/2006 Red Hat Inc <alan@redhat.com>, all rights reserved.
	5	*
	6	* Based in part on ide-pnp.c by Andrey Panin <pazke@donpac.ru>
	7	*/
	8
	9	#include <linux/kernel.h>
	10	#include <linux/module.h>
	11	#include <linux/isapnp.h>
	12	#include <linux/init.h>
	13	#include <linux/blkdev.h>
	14	#include <linux/delay.h>
	15	#include <scsi/scsi_host.h>
	16	#include <linux/ata.h>
	17	#include <linux/libata.h>
	18
	19	#define DRV_NAME "pata_isapnp"
2a3103ce	20	#define DRV_VERSION "0.2.2"
669a5db4 JG	21
	22	static struct scsi_host_template isapnp_sht = {
	23	.module = THIS_MODULE,
	24	.name = DRV_NAME,
	25	.ioctl = ata_scsi_ioctl,
	26	.queuecommand = ata_scsi_queuecmd,
	27	.can_queue = ATA_DEF_QUEUE,
	28	.this_id = ATA_SHT_THIS_ID,
	29	.sg_tablesize = LIBATA_MAX_PRD,
669a5db4 JG	30	.cmd_per_lun = ATA_SHT_CMD_PER_LUN,
	31	.emulated = ATA_SHT_EMULATED,
	32	.use_clustering = ATA_SHT_USE_CLUSTERING,
	33	.proc_name = DRV_NAME,
	34	.dma_boundary = ATA_DMA_BOUNDARY,
	35	.slave_configure = ata_scsi_slave_config,
afdfe899	36	.slave_destroy = ata_scsi_slave_destroy,
669a5db4 JG	37	.bios_param = ata_std_bios_param,
	38	};
	39
	40	static struct ata_port_operations isapnp_port_ops = {
669a5db4 JG	41	.tf_load = ata_tf_load,
	42	.tf_read = ata_tf_read,
	43	.check_status = ata_check_status,
	44	.exec_command = ata_exec_command,
	45	.dev_select = ata_std_dev_select,
	46
	47	.freeze = ata_bmdma_freeze,
	48	.thaw = ata_bmdma_thaw,
	49	.error_handler = ata_bmdma_error_handler,
	50	.post_internal_cmd = ata_bmdma_post_internal_cmd,
a73984a0	51	.cable_detect = ata_cable_40wire,
669a5db4 JG	52
	53	.qc_prep = ata_qc_prep,
	54	.qc_issue = ata_qc_issue_prot,
bda30288	55
0d5ff566	56	.data_xfer = ata_data_xfer,
669a5db4	57
669a5db4	58	.irq_clear = ata_bmdma_irq_clear,
246ce3b6	59	.irq_on = ata_irq_on,
669a5db4	60
81ad1837	61	.port_start = ata_sff_port_start,
669a5db4 JG	62	};
	63
	64	/**
	65	* isapnp_init_one - attach an isapnp interface
	66	* @idev: PnP device
	67	* @dev_id: matching detect line
	68	*
	69	* Register an ISA bus IDE interface. Such interfaces are PIO 0 and
	70	* non shared IRQ.
	71	*/
	72
	73	static int isapnp_init_one(struct pnp_dev idev, const struct pnp_device_id dev_id)
	74	{
5d728824 TH	75	struct ata_host *host;
5d728824 TH	76	struct ata_port *ap;
0d5ff566	77	void __iomem cmd_addr, ctl_addr;
669a5db4 JG	78
	79	if (pnp_port_valid(idev, 0) == 0)
	80	return -ENODEV;
	81
	82	/* FIXME: Should selected polled PIO here not fail */
	83	if (pnp_irq_valid(idev, 0) == 0)
	84	return -ENODEV;
	85
5d728824 TH	86	/* allocate host */
	87	host = ata_host_alloc(&idev->dev, 1);
	88	if (!host)
	89	return -ENOMEM;
	90
	91	/* acquire resources and fill host */
0d5ff566 TH	92	cmd_addr = devm_ioport_map(&idev->dev, pnp_port_start(idev, 0), 8);
	93	if (!cmd_addr)
	94	return -ENOMEM;
	95
5d728824 TH	96	ap = host->ports[0];
	97
	98	ap->ops = &isapnp_port_ops;
	99	ap->pio_mask = 1;
	100	ap->flags \|= ATA_FLAG_SLAVE_POSS;
	101
	102	ap->ioaddr.cmd_addr = cmd_addr;
669a5db4 JG	103
669a5db4 JG	104	if (pnp_port_valid(idev, 1) == 0) {
0d5ff566 TH	105	ctl_addr = devm_ioport_map(&idev->dev,
0d5ff566 TH	106	pnp_port_start(idev, 1), 1);
5d728824 TH	107	ap->ioaddr.altstatus_addr = ctl_addr;
5d728824 TH	108	ap->ioaddr.ctl_addr = ctl_addr;
669a5db4	109	}
669a5db4	110
5d728824 TH	111	ata_std_ports(&ap->ioaddr);
5d728824 TH	112
cbcdd875 TH	113	ata_port_desc(ap, "cmd 0x%llx ctl 0x%llx",
	114	(unsigned long long)pnp_port_start(idev, 0),
	115	(unsigned long long)pnp_port_start(idev, 1));
	116
5d728824 TH	117	/* activate */
	118	return ata_host_activate(host, pnp_irq(idev, 0), ata_interrupt, 0,
	119	&isapnp_sht);
669a5db4 JG	120	}
	121
	122	/**
	123	* isapnp_remove_one - unplug an isapnp interface
	124	* @idev: PnP device
	125	*
	126	* Remove a previously configured PnP ATA port. Called only on module
	127	* unload events as the core does not currently deal with ISAPnP docking.
	128	*/
	129
	130	static void isapnp_remove_one(struct pnp_dev *idev)
	131	{
	132	struct device *dev = &idev->dev;
	133	struct ata_host *host = dev_get_drvdata(dev);
	134
24dc5f33	135	ata_host_detach(host);
669a5db4 JG	136	}
	137
	138	static struct pnp_device_id isapnp_devices[] = {
	139	/* Generic ESDI/IDE/ATA compatible hard disk controller */
	140	{.id = "PNP0600", .driver_data = 0},
	141	{.id = ""}
	142	};
	143
6a286a6d JG	144	MODULE_DEVICE_TABLE(pnp, isapnp_devices);
6a286a6d JG	145
669a5db4 JG	146	static struct pnp_driver isapnp_driver = {
	147	.name = DRV_NAME,
	148	.id_table = isapnp_devices,
	149	.probe = isapnp_init_one,
	150	.remove = isapnp_remove_one,
	151	};
	152
	153	static int __init isapnp_init(void)
	154	{
	155	return pnp_register_driver(&isapnp_driver);
	156	}
	157
	158	static void __exit isapnp_exit(void)
	159	{
	160	pnp_unregister_driver(&isapnp_driver);
	161	}
	162
	163	MODULE_AUTHOR("Alan Cox");
	164	MODULE_DESCRIPTION("low-level driver for ISA PnP ATA");
	165	MODULE_LICENSE("GPL");
	166	MODULE_VERSION(DRV_VERSION);
	167
	168	module_init(isapnp_init);
	169	module_exit(isapnp_exit);