[people/ms/linux.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 "0.2.0"

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 = {
	.port_disable	= ata_port_disable,
	.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,

	.qc_prep 	= ata_qc_prep,
	.qc_issue	= ata_qc_issue_prot,

	.data_xfer	= ata_data_xfer,

	.irq_handler	= ata_interrupt,
	.irq_clear	= ata_bmdma_irq_clear,
	.irq_on		= ata_irq_on,
	.irq_ack	= ata_irq_ack,

	.port_start	= ata_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_probe_ent ae;
	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;

	cmd_addr = devm_ioport_map(&idev->dev, pnp_port_start(idev, 0), 8);
	if (!cmd_addr)
		return -ENOMEM;

	memset(&ae, 0, sizeof(struct ata_probe_ent));
	INIT_LIST_HEAD(&ae.node);
	ae.dev = &idev->dev;
	ae.port_ops = &isapnp_port_ops;
	ae.sht = &isapnp_sht;
	ae.n_ports = 1;
	ae.pio_mask = 1;		/* ISA so PIO 0 cycles */
	ae.irq = pnp_irq(idev, 0);
	ae.irq_flags = 0;
	ae.port_flags = ATA_FLAG_SLAVE_POSS;
	ae.port[0].cmd_addr = cmd_addr;

	if (pnp_port_valid(idev, 1) == 0) {
		ctl_addr = devm_ioport_map(&idev->dev,
					   pnp_port_start(idev, 1), 1);
		ae.port[0].altstatus_addr = ctl_addr;
		ae.port[0].ctl_addr = ctl_addr;
		ae.port_flags |= ATA_FLAG_SRST;
	}
	ata_std_ports(&ae.port[0]);

	if (ata_device_add(&ae) == 0)
		return -ENODEV;
	return 0;
}

/**
 *	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 = ""}
};

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"
cb48cab7	20	#define DRV_VERSION "0.2.0"
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 = {
	41	.port_disable = ata_port_disable,
	42	.tf_load = ata_tf_load,
	43	.tf_read = ata_tf_read,
	44	.check_status = ata_check_status,
	45	.exec_command = ata_exec_command,
	46	.dev_select = ata_std_dev_select,
	47
	48	.freeze = ata_bmdma_freeze,
	49	.thaw = ata_bmdma_thaw,
	50	.error_handler = ata_bmdma_error_handler,
	51	.post_internal_cmd = ata_bmdma_post_internal_cmd,
	52
	53	.qc_prep = ata_qc_prep,
	54	.qc_issue = ata_qc_issue_prot,
bda30288	55
0d5ff566	56	.data_xfer = ata_data_xfer,
669a5db4 JG	57
	58	.irq_handler = ata_interrupt,
	59	.irq_clear = ata_bmdma_irq_clear,
246ce3b6 AI	60	.irq_on = ata_irq_on,
246ce3b6 AI	61	.irq_ack = ata_irq_ack,
669a5db4 JG	62
669a5db4 JG	63	.port_start = ata_port_start,
669a5db4 JG	64	};
	65
	66	/**
	67	* isapnp_init_one - attach an isapnp interface
	68	* @idev: PnP device
	69	* @dev_id: matching detect line
	70	*
	71	* Register an ISA bus IDE interface. Such interfaces are PIO 0 and
	72	* non shared IRQ.
	73	*/
	74
	75	static int isapnp_init_one(struct pnp_dev idev, const struct pnp_device_id dev_id)
	76	{
	77	struct ata_probe_ent ae;
0d5ff566	78	void __iomem cmd_addr, ctl_addr;
669a5db4 JG	79
	80	if (pnp_port_valid(idev, 0) == 0)
	81	return -ENODEV;
	82
	83	/* FIXME: Should selected polled PIO here not fail */
	84	if (pnp_irq_valid(idev, 0) == 0)
	85	return -ENODEV;
	86
0d5ff566 TH	87	cmd_addr = devm_ioport_map(&idev->dev, pnp_port_start(idev, 0), 8);
	88	if (!cmd_addr)
	89	return -ENOMEM;
	90
669a5db4 JG	91	memset(&ae, 0, sizeof(struct ata_probe_ent));
	92	INIT_LIST_HEAD(&ae.node);
	93	ae.dev = &idev->dev;
	94	ae.port_ops = &isapnp_port_ops;
	95	ae.sht = &isapnp_sht;
	96	ae.n_ports = 1;
	97	ae.pio_mask = 1; /* ISA so PIO 0 cycles */
	98	ae.irq = pnp_irq(idev, 0);
	99	ae.irq_flags = 0;
	100	ae.port_flags = ATA_FLAG_SLAVE_POSS;
0d5ff566	101	ae.port[0].cmd_addr = cmd_addr;
669a5db4 JG	102
669a5db4 JG	103	if (pnp_port_valid(idev, 1) == 0) {
0d5ff566 TH	104	ctl_addr = devm_ioport_map(&idev->dev,
	105	pnp_port_start(idev, 1), 1);
	106	ae.port[0].altstatus_addr = ctl_addr;
	107	ae.port[0].ctl_addr = ctl_addr;
669a5db4 JG	108	ae.port_flags \|= ATA_FLAG_SRST;
	109	}
	110	ata_std_ports(&ae.port[0]);
	111
	112	if (ata_device_add(&ae) == 0)
	113	return -ENODEV;
	114	return 0;
	115	}
	116
	117	/**
	118	* isapnp_remove_one - unplug an isapnp interface
	119	* @idev: PnP device
	120	*
	121	* Remove a previously configured PnP ATA port. Called only on module
	122	* unload events as the core does not currently deal with ISAPnP docking.
	123	*/
	124
	125	static void isapnp_remove_one(struct pnp_dev *idev)
	126	{
	127	struct device *dev = &idev->dev;
	128	struct ata_host *host = dev_get_drvdata(dev);
	129
24dc5f33	130	ata_host_detach(host);
669a5db4 JG	131	}
	132
	133	static struct pnp_device_id isapnp_devices[] = {
	134	/* Generic ESDI/IDE/ATA compatible hard disk controller */
	135	{.id = "PNP0600", .driver_data = 0},
	136	{.id = ""}
	137	};
	138
	139	static struct pnp_driver isapnp_driver = {
	140	.name = DRV_NAME,
	141	.id_table = isapnp_devices,
	142	.probe = isapnp_init_one,
	143	.remove = isapnp_remove_one,
	144	};
	145
	146	static int __init isapnp_init(void)
	147	{
	148	return pnp_register_driver(&isapnp_driver);
	149	}
	150
	151	static void __exit isapnp_exit(void)
	152	{
	153	pnp_unregister_driver(&isapnp_driver);
	154	}
	155
	156	MODULE_AUTHOR("Alan Cox");
	157	MODULE_DESCRIPTION("low-level driver for ISA PnP ATA");
	158	MODULE_LICENSE("GPL");
	159	MODULE_VERSION(DRV_VERSION);
	160
	161	module_init(isapnp_init);
	162	module_exit(isapnp_exit);