[linux.git] / drivers / ata / pata_icside.c

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

#include <asm/dma.h>
#include <asm/ecard.h>

#define DRV_NAME	"pata_icside"

#define ICS_IDENT_OFFSET		0x2280

#define ICS_ARCIN_V5_INTRSTAT		0x0000
#define ICS_ARCIN_V5_INTROFFSET		0x0004

#define ICS_ARCIN_V6_INTROFFSET_1	0x2200
#define ICS_ARCIN_V6_INTRSTAT_1		0x2290
#define ICS_ARCIN_V6_INTROFFSET_2	0x3200
#define ICS_ARCIN_V6_INTRSTAT_2		0x3290

struct portinfo {
	unsigned int dataoffset;
	unsigned int ctrloffset;
	unsigned int stepping;
};

static const struct portinfo pata_icside_portinfo_v5 = {
	.dataoffset	= 0x2800,
	.ctrloffset	= 0x2b80,
	.stepping	= 6,
};

static const struct portinfo pata_icside_portinfo_v6_1 = {
	.dataoffset	= 0x2000,
	.ctrloffset	= 0x2380,
	.stepping	= 6,
};

static const struct portinfo pata_icside_portinfo_v6_2 = {
	.dataoffset	= 0x3000,
	.ctrloffset	= 0x3380,
	.stepping	= 6,
};

#define PATA_ICSIDE_MAX_SG	128

struct pata_icside_state {
	void __iomem *irq_port;
	void __iomem *ioc_base;
	unsigned int type;
	unsigned int dma;
	struct {
		u8 port_sel;
		u8 disabled;
		unsigned int speed[ATA_MAX_DEVICES];
	} port[2];
	struct scatterlist sg[PATA_ICSIDE_MAX_SG];
};

struct pata_icside_info {
	struct pata_icside_state *state;
	struct expansion_card	*ec;
	void __iomem		*base;
	void __iomem		*irqaddr;
	unsigned int		irqmask;
	const expansioncard_ops_t *irqops;
	unsigned int		mwdma_mask;
	unsigned int		nr_ports;
	const struct portinfo	*port[2];
	unsigned long		raw_base;
	unsigned long		raw_ioc_base;
};

#define ICS_TYPE_A3IN	0
#define ICS_TYPE_A3USER	1
#define ICS_TYPE_V6	3
#define ICS_TYPE_V5	15
#define ICS_TYPE_NOTYPE	((unsigned int)-1)

/* ---------------- Version 5 PCB Support Functions --------------------- */
/* Prototype: pata_icside_irqenable_arcin_v5 (struct expansion_card *ec, int irqnr)
 * Purpose  : enable interrupts from card
 */
static void pata_icside_irqenable_arcin_v5 (struct expansion_card *ec, int irqnr)
{
	struct pata_icside_state *state = ec->irq_data;

	writeb(0, state->irq_port + ICS_ARCIN_V5_INTROFFSET);
}

/* Prototype: pata_icside_irqdisable_arcin_v5 (struct expansion_card *ec, int irqnr)
 * Purpose  : disable interrupts from card
 */
static void pata_icside_irqdisable_arcin_v5 (struct expansion_card *ec, int irqnr)
{
	struct pata_icside_state *state = ec->irq_data;

	readb(state->irq_port + ICS_ARCIN_V5_INTROFFSET);
}

static const expansioncard_ops_t pata_icside_ops_arcin_v5 = {
	.irqenable	= pata_icside_irqenable_arcin_v5,
	.irqdisable	= pata_icside_irqdisable_arcin_v5,
};


/* ---------------- Version 6 PCB Support Functions --------------------- */
/* Prototype: pata_icside_irqenable_arcin_v6 (struct expansion_card *ec, int irqnr)
 * Purpose  : enable interrupts from card
 */
static void pata_icside_irqenable_arcin_v6 (struct expansion_card *ec, int irqnr)
{
	struct pata_icside_state *state = ec->irq_data;
	void __iomem *base = state->irq_port;

	if (!state->port[0].disabled)
		writeb(0, base + ICS_ARCIN_V6_INTROFFSET_1);
	if (!state->port[1].disabled)
		writeb(0, base + ICS_ARCIN_V6_INTROFFSET_2);
}

/* Prototype: pata_icside_irqdisable_arcin_v6 (struct expansion_card *ec, int irqnr)
 * Purpose  : disable interrupts from card
 */
static void pata_icside_irqdisable_arcin_v6 (struct expansion_card *ec, int irqnr)
{
	struct pata_icside_state *state = ec->irq_data;

	readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_1);
	readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_2);
}

/* Prototype: pata_icside_irqprobe(struct expansion_card *ec)
 * Purpose  : detect an active interrupt from card
 */
static int pata_icside_irqpending_arcin_v6(struct expansion_card *ec)
{
	struct pata_icside_state *state = ec->irq_data;

	return readb(state->irq_port + ICS_ARCIN_V6_INTRSTAT_1) & 1 ||
	       readb(state->irq_port + ICS_ARCIN_V6_INTRSTAT_2) & 1;
}

static const expansioncard_ops_t pata_icside_ops_arcin_v6 = {
	.irqenable	= pata_icside_irqenable_arcin_v6,
	.irqdisable	= pata_icside_irqdisable_arcin_v6,
	.irqpending	= pata_icside_irqpending_arcin_v6,
};


/*
 * SG-DMA support.
 *
 * Similar to the BM-DMA, but we use the RiscPCs IOMD DMA controllers.
 * There is only one DMA controller per card, which means that only
 * one drive can be accessed at one time.  NOTE! We do not enforce that
 * here, but we rely on the main IDE driver spotting that both
 * interfaces use the same IRQ, which should guarantee this.
 */

/*
 * Configure the IOMD to give the appropriate timings for the transfer
 * mode being requested.  We take the advice of the ATA standards, and
 * calculate the cycle time based on the transfer mode, and the EIDE
 * MW DMA specs that the drive provides in the IDENTIFY command.
 *
 * We have the following IOMD DMA modes to choose from:
 *
 *	Type	Active		Recovery	Cycle
 *	A	250 (250)	312 (550)	562 (800)
 *	B	187 (200)	250 (550)	437 (750)
 *	C	125 (125)	125 (375)	250 (500)
 *	D	62  (50)	125 (375)	187 (425)
 *
 * (figures in brackets are actual measured timings on DIOR/DIOW)
 *
 * However, we also need to take care of the read/write active and
 * recovery timings:
 *
 *			Read	Write
 *  	Mode	Active	-- Recovery --	Cycle	IOMD type
 *	MW0	215	50	215	480	A
 *	MW1	80	50	50	150	C
 *	MW2	70	25	25	120	C
 */
static void pata_icside_set_dmamode(struct ata_port *ap, struct ata_device *adev)
{
	struct pata_icside_state *state = ap->host->private_data;
	struct ata_timing t;
	unsigned int cycle;
	char iomd_type;

	/*
	 * DMA is based on a 16MHz clock
	 */
	if (ata_timing_compute(adev, adev->dma_mode, &t, 1000, 1))
		return;

	/*
	 * Choose the IOMD cycle timing which ensure that the interface
	 * satisfies the measured active, recovery and cycle times.
	 */
	if (t.active <= 50 && t.recover <= 375 && t.cycle <= 425)
		iomd_type = 'D', cycle = 187;
	else if (t.active <= 125 && t.recover <= 375 && t.cycle <= 500)
		iomd_type = 'C', cycle = 250;
	else if (t.active <= 200 && t.recover <= 550 && t.cycle <= 750)
		iomd_type = 'B', cycle = 437;
	else
		iomd_type = 'A', cycle = 562;

	ata_dev_printk(adev, KERN_INFO, "timings: act %dns rec %dns cyc %dns (%c)\n",
		t.active, t.recover, t.cycle, iomd_type);

	state->port[ap->port_no].speed[adev->devno] = cycle;
}

static void pata_icside_bmdma_setup(struct ata_queued_cmd *qc)
{
	struct ata_port *ap = qc->ap;
	struct pata_icside_state *state = ap->host->private_data;
	struct scatterlist *sg, *rsg = state->sg;
	unsigned int write = qc->tf.flags & ATA_TFLAG_WRITE;
	unsigned int si;

	/*
	 * We are simplex; BUG if we try to fiddle with DMA
	 * while it's active.
	 */
	BUG_ON(dma_channel_active(state->dma));

	/*
	 * Copy ATAs scattered sg list into a contiguous array of sg
	 */
	for_each_sg(qc->sg, sg, qc->n_elem, si) {
		memcpy(rsg, sg, sizeof(*sg));
		rsg++;
	}

	/*
	 * Route the DMA signals to the correct interface
	 */
	writeb(state->port[ap->port_no].port_sel, state->ioc_base);

	set_dma_speed(state->dma, state->port[ap->port_no].speed[qc->dev->devno]);
	set_dma_sg(state->dma, state->sg, rsg - state->sg);
	set_dma_mode(state->dma, write ? DMA_MODE_WRITE : DMA_MODE_READ);

	/* issue r/w command */
	ap->ops->exec_command(ap, &qc->tf);
}

static void pata_icside_bmdma_start(struct ata_queued_cmd *qc)
{
	struct ata_port *ap = qc->ap;
	struct pata_icside_state *state = ap->host->private_data;

	BUG_ON(dma_channel_active(state->dma));
	enable_dma(state->dma);
}

static void pata_icside_bmdma_stop(struct ata_queued_cmd *qc)
{
	struct ata_port *ap = qc->ap;
	struct pata_icside_state *state = ap->host->private_data;

	disable_dma(state->dma);

	/* see ata_bmdma_stop */
	ata_altstatus(ap);
}

static u8 pata_icside_bmdma_status(struct ata_port *ap)
{
	struct pata_icside_state *state = ap->host->private_data;
	void __iomem *irq_port;

	irq_port = state->irq_port + (ap->port_no ? ICS_ARCIN_V6_INTRSTAT_2 :
						    ICS_ARCIN_V6_INTRSTAT_1);

	return readb(irq_port) & 1 ? ATA_DMA_INTR : 0;
}

static int icside_dma_init(struct pata_icside_info *info)
{
	struct pata_icside_state *state = info->state;
	struct expansion_card *ec = info->ec;
	int i;

	for (i = 0; i < ATA_MAX_DEVICES; i++) {
		state->port[0].speed[i] = 480;
		state->port[1].speed[i] = 480;
	}

	if (ec->dma != NO_DMA && !request_dma(ec->dma, DRV_NAME)) {
		state->dma = ec->dma;
		info->mwdma_mask = 0x07;	/* MW0..2 */
	}

	return 0;
}


static int pata_icside_port_start(struct ata_port *ap)
{
	/* No PRD to alloc */
	return ata_pad_alloc(ap, ap->dev);
}

static struct scsi_host_template pata_icside_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		= PATA_ICSIDE_MAX_SG,
	.cmd_per_lun		= ATA_SHT_CMD_PER_LUN,
	.emulated		= ATA_SHT_EMULATED,
	.use_clustering		= ATA_SHT_USE_CLUSTERING,
	.proc_name		= DRV_NAME,
	.dma_boundary		= ~0, /* no dma boundaries */
	.slave_configure	= ata_scsi_slave_config,
	.slave_destroy		= ata_scsi_slave_destroy,
	.bios_param		= ata_std_bios_param,
};

/* wish this was exported from libata-core */
static void ata_dummy_noret(struct ata_port *port)
{
}

static void pata_icside_postreset(struct ata_link *link, unsigned int *classes)
{
	struct ata_port *ap = link->ap;
	struct pata_icside_state *state = ap->host->private_data;

	if (classes[0] != ATA_DEV_NONE || classes[1] != ATA_DEV_NONE)
		return ata_std_postreset(link, classes);

	state->port[ap->port_no].disabled = 1;

	if (state->type == ICS_TYPE_V6) {
		/*
		 * Disable interrupts from this port, otherwise we
		 * receive spurious interrupts from the floating
		 * interrupt line.
		 */
		void __iomem *irq_port = state->irq_port +
				(ap->port_no ? ICS_ARCIN_V6_INTROFFSET_2 : ICS_ARCIN_V6_INTROFFSET_1);
		readb(irq_port);
	}
}

static void pata_icside_error_handler(struct ata_port *ap)
{
	ata_bmdma_drive_eh(ap, ata_std_prereset, ata_std_softreset, NULL,
			   pata_icside_postreset);
}

static struct ata_port_operations pata_icside_port_ops = {
	.set_dmamode		= pata_icside_set_dmamode,

	.tf_load		= ata_tf_load,
	.tf_read		= ata_tf_read,
	.exec_command		= ata_exec_command,
	.check_status		= ata_check_status,
	.dev_select		= ata_std_dev_select,

	.cable_detect		= ata_cable_40wire,

	.bmdma_setup		= pata_icside_bmdma_setup,
	.bmdma_start		= pata_icside_bmdma_start,

	.data_xfer		= ata_data_xfer_noirq,

	/* no need to build any PRD tables for DMA */
	.qc_prep		= ata_noop_qc_prep,
	.qc_issue		= ata_qc_issue_prot,

	.freeze			= ata_bmdma_freeze,
	.thaw			= ata_bmdma_thaw,
	.error_handler		= pata_icside_error_handler,
	.post_internal_cmd	= pata_icside_bmdma_stop,

	.irq_clear		= ata_dummy_noret,
	.irq_on			= ata_irq_on,

	.port_start		= pata_icside_port_start,

	.bmdma_stop		= pata_icside_bmdma_stop,
	.bmdma_status		= pata_icside_bmdma_status,
};

static void __devinit
pata_icside_setup_ioaddr(struct ata_port *ap, void __iomem *base,
			 struct pata_icside_info *info,
			 const struct portinfo *port)
{
	struct ata_ioports *ioaddr = &ap->ioaddr;
	void __iomem *cmd = base + port->dataoffset;

	ioaddr->cmd_addr	= cmd;
	ioaddr->data_addr	= cmd + (ATA_REG_DATA    << port->stepping);
	ioaddr->error_addr	= cmd + (ATA_REG_ERR     << port->stepping);
	ioaddr->feature_addr	= cmd + (ATA_REG_FEATURE << port->stepping);
	ioaddr->nsect_addr	= cmd + (ATA_REG_NSECT   << port->stepping);
	ioaddr->lbal_addr	= cmd + (ATA_REG_LBAL    << port->stepping);
	ioaddr->lbam_addr	= cmd + (ATA_REG_LBAM    << port->stepping);
	ioaddr->lbah_addr	= cmd + (ATA_REG_LBAH    << port->stepping);
	ioaddr->device_addr	= cmd + (ATA_REG_DEVICE  << port->stepping);
	ioaddr->status_addr	= cmd + (ATA_REG_STATUS  << port->stepping);
	ioaddr->command_addr	= cmd + (ATA_REG_CMD     << port->stepping);

	ioaddr->ctl_addr	= base + port->ctrloffset;
	ioaddr->altstatus_addr	= ioaddr->ctl_addr;

	ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx",
		      info->raw_base + port->dataoffset,
		      info->raw_base + port->ctrloffset);

	if (info->raw_ioc_base)
		ata_port_desc(ap, "iocbase 0x%lx", info->raw_ioc_base);
}

static int __devinit pata_icside_register_v5(struct pata_icside_info *info)
{
	struct pata_icside_state *state = info->state;
	void __iomem *base;

	base = ecardm_iomap(info->ec, ECARD_RES_MEMC, 0, 0);
	if (!base)
		return -ENOMEM;

	state->irq_port = base;

	info->base = base;
	info->irqaddr = base + ICS_ARCIN_V5_INTRSTAT;
	info->irqmask = 1;
	info->irqops = &pata_icside_ops_arcin_v5;
	info->nr_ports = 1;
	info->port[0] = &pata_icside_portinfo_v5;

	info->raw_base = ecard_resource_start(info->ec, ECARD_RES_MEMC);

	return 0;
}

static int __devinit pata_icside_register_v6(struct pata_icside_info *info)
{
	struct pata_icside_state *state = info->state;
	struct expansion_card *ec = info->ec;
	void __iomem *ioc_base, *easi_base;
	unsigned int sel = 0;

	ioc_base = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
	if (!ioc_base)
		return -ENOMEM;

	easi_base = ioc_base;

	if (ecard_resource_flags(ec, ECARD_RES_EASI)) {
		easi_base = ecardm_iomap(ec, ECARD_RES_EASI, 0, 0);
		if (!easi_base)
			return -ENOMEM;

		/*
		 * Enable access to the EASI region.
		 */
		sel = 1 << 5;
	}

	writeb(sel, ioc_base);

	state->irq_port = easi_base;
	state->ioc_base = ioc_base;
	state->port[0].port_sel = sel;
	state->port[1].port_sel = sel | 1;

	info->base = easi_base;
	info->irqops = &pata_icside_ops_arcin_v6;
	info->nr_ports = 2;
	info->port[0] = &pata_icside_portinfo_v6_1;
	info->port[1] = &pata_icside_portinfo_v6_2;

	info->raw_base = ecard_resource_start(ec, ECARD_RES_EASI);
	info->raw_ioc_base = ecard_resource_start(ec, ECARD_RES_IOCFAST);

	return icside_dma_init(info);
}

static int __devinit pata_icside_add_ports(struct pata_icside_info *info)
{
	struct expansion_card *ec = info->ec;
	struct ata_host *host;
	int i;

	if (info->irqaddr) {
		ec->irqaddr = info->irqaddr;
		ec->irqmask = info->irqmask;
	}
	if (info->irqops)
		ecard_setirq(ec, info->irqops, info->state);

	/*
	 * Be on the safe side - disable interrupts
	 */
	ec->ops->irqdisable(ec, ec->irq);

	host = ata_host_alloc(&ec->dev, info->nr_ports);
	if (!host)
		return -ENOMEM;

	host->private_data = info->state;
	host->flags = ATA_HOST_SIMPLEX;

	for (i = 0; i < info->nr_ports; i++) {
		struct ata_port *ap = host->ports[i];

		ap->pio_mask = 0x1f;
		ap->mwdma_mask = info->mwdma_mask;
		ap->flags |= ATA_FLAG_SLAVE_POSS;
		ap->ops = &pata_icside_port_ops;

		pata_icside_setup_ioaddr(ap, info->base, info, info->port[i]);
	}

	return ata_host_activate(host, ec->irq, ata_interrupt, 0,
				 &pata_icside_sht);
}

static int __devinit
pata_icside_probe(struct expansion_card *ec, const struct ecard_id *id)
{
	struct pata_icside_state *state;
	struct pata_icside_info info;
	void __iomem *idmem;
	int ret;

	ret = ecard_request_resources(ec);
	if (ret)
		goto out;

	state = devm_kzalloc(&ec->dev, sizeof(*state), GFP_KERNEL);
	if (!state) {
		ret = -ENOMEM;
		goto release;
	}

	state->type = ICS_TYPE_NOTYPE;
	state->dma = NO_DMA;

	idmem = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
	if (idmem) {
		unsigned int type;

		type = readb(idmem + ICS_IDENT_OFFSET) & 1;
		type |= (readb(idmem + ICS_IDENT_OFFSET + 4) & 1) << 1;
		type |= (readb(idmem + ICS_IDENT_OFFSET + 8) & 1) << 2;
		type |= (readb(idmem + ICS_IDENT_OFFSET + 12) & 1) << 3;
		ecardm_iounmap(ec, idmem);

		state->type = type;
	}

	memset(&info, 0, sizeof(info));
	info.state = state;
	info.ec = ec;

	switch (state->type) {
	case ICS_TYPE_A3IN:
		dev_warn(&ec->dev, "A3IN unsupported\n");
		ret = -ENODEV;
		break;

	case ICS_TYPE_A3USER:
		dev_warn(&ec->dev, "A3USER unsupported\n");
		ret = -ENODEV;
		break;

	case ICS_TYPE_V5:
		ret = pata_icside_register_v5(&info);
		break;

	case ICS_TYPE_V6:
		ret = pata_icside_register_v6(&info);
		break;

	default:
		dev_warn(&ec->dev, "unknown interface type\n");
		ret = -ENODEV;
		break;
	}

	if (ret == 0)
		ret = pata_icside_add_ports(&info);

	if (ret == 0)
		goto out;

 release:
	ecard_release_resources(ec);
 out:
	return ret;
}

static void pata_icside_shutdown(struct expansion_card *ec)
{
	struct ata_host *host = ecard_get_drvdata(ec);
	unsigned long flags;

	/*
	 * Disable interrupts from this card.  We need to do
	 * this before disabling EASI since we may be accessing
	 * this register via that region.
	 */
	local_irq_save(flags);
	ec->ops->irqdisable(ec, ec->irq);
	local_irq_restore(flags);

	/*
	 * Reset the ROM pointer so that we can read the ROM
	 * after a soft reboot.  This also disables access to
	 * the IDE taskfile via the EASI region.
	 */
	if (host) {
		struct pata_icside_state *state = host->private_data;
		if (state->ioc_base)
			writeb(0, state->ioc_base);
	}
}

static void __devexit pata_icside_remove(struct expansion_card *ec)
{
	struct ata_host *host = ecard_get_drvdata(ec);
	struct pata_icside_state *state = host->private_data;

	ata_host_detach(host);

	pata_icside_shutdown(ec);

	/*
	 * don't NULL out the drvdata - devres/libata wants it
	 * to free the ata_host structure.
	 */
	if (state->dma != NO_DMA)
		free_dma(state->dma);

	ecard_release_resources(ec);
}

static const struct ecard_id pata_icside_ids[] = {
	{ MANU_ICS,  PROD_ICS_IDE  },
	{ MANU_ICS2, PROD_ICS2_IDE },
	{ 0xffff, 0xffff }
};

static struct ecard_driver pata_icside_driver = {
	.probe		= pata_icside_probe,
	.remove 	= __devexit_p(pata_icside_remove),
	.shutdown	= pata_icside_shutdown,
	.id_table	= pata_icside_ids,
	.drv = {
		.name	= DRV_NAME,
	},
};

static int __init pata_icside_init(void)
{
	return ecard_register_driver(&pata_icside_driver);
}

static void __exit pata_icside_exit(void)
{
	ecard_remove_driver(&pata_icside_driver);
}

MODULE_AUTHOR("Russell King <[email protected]>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("ICS PATA driver");

module_init(pata_icside_init);
module_exit(pata_icside_exit);
Commit	Line	Data
73b6a2be RK	1	#include <linux/kernel.h>
	2	#include <linux/module.h>
	3	#include <linux/init.h>
	4	#include <linux/blkdev.h>
	5	#include <scsi/scsi_host.h>
	6	#include <linux/ata.h>
	7	#include <linux/libata.h>
	8
	9	#include <asm/dma.h>
	10	#include <asm/ecard.h>
	11
	12	#define DRV_NAME "pata_icside"
	13
	14	#define ICS_IDENT_OFFSET 0x2280
	15
	16	#define ICS_ARCIN_V5_INTRSTAT 0x0000
	17	#define ICS_ARCIN_V5_INTROFFSET 0x0004
	18
	19	#define ICS_ARCIN_V6_INTROFFSET_1 0x2200
	20	#define ICS_ARCIN_V6_INTRSTAT_1 0x2290
	21	#define ICS_ARCIN_V6_INTROFFSET_2 0x3200
	22	#define ICS_ARCIN_V6_INTRSTAT_2 0x3290
	23
	24	struct portinfo {
	25	unsigned int dataoffset;
	26	unsigned int ctrloffset;
	27	unsigned int stepping;
	28	};
	29
	30	static const struct portinfo pata_icside_portinfo_v5 = {
	31	.dataoffset = 0x2800,
	32	.ctrloffset = 0x2b80,
	33	.stepping = 6,
	34	};
	35
	36	static const struct portinfo pata_icside_portinfo_v6_1 = {
	37	.dataoffset = 0x2000,
	38	.ctrloffset = 0x2380,
	39	.stepping = 6,
	40	};
	41
	42	static const struct portinfo pata_icside_portinfo_v6_2 = {
	43	.dataoffset = 0x3000,
	44	.ctrloffset = 0x3380,
	45	.stepping = 6,
	46	};
	47
	48	#define PATA_ICSIDE_MAX_SG 128
	49
	50	struct pata_icside_state {
	51	void __iomem *irq_port;
	52	void __iomem *ioc_base;
	53	unsigned int type;
	54	unsigned int dma;
	55	struct {
	56	u8 port_sel;
	57	u8 disabled;
	58	unsigned int speed[ATA_MAX_DEVICES];
	59	} port[2];
	60	struct scatterlist sg[PATA_ICSIDE_MAX_SG];
	61	};
	62
f95637d2 RK	63	struct pata_icside_info {
	64	struct pata_icside_state *state;
	65	struct expansion_card *ec;
	66	void __iomem *base;
	67	void __iomem *irqaddr;
	68	unsigned int irqmask;
	69	const expansioncard_ops_t *irqops;
	70	unsigned int mwdma_mask;
	71	unsigned int nr_ports;
	72	const struct portinfo *port[2];
cbcdd875 TH	73	unsigned long raw_base;
cbcdd875 TH	74	unsigned long raw_ioc_base;
f95637d2 RK	75	};
f95637d2 RK	76
73b6a2be RK	77	#define ICS_TYPE_A3IN 0
	78	#define ICS_TYPE_A3USER 1
	79	#define ICS_TYPE_V6 3
	80	#define ICS_TYPE_V5 15
	81	#define ICS_TYPE_NOTYPE ((unsigned int)-1)
	82
	83	/* ---------------- Version 5 PCB Support Functions --------------------- */
	84	/* Prototype: pata_icside_irqenable_arcin_v5 (struct expansion_card *ec, int irqnr)
	85	* Purpose : enable interrupts from card
	86	*/
	87	static void pata_icside_irqenable_arcin_v5 (struct expansion_card *ec, int irqnr)
	88	{
	89	struct pata_icside_state *state = ec->irq_data;
	90
	91	writeb(0, state->irq_port + ICS_ARCIN_V5_INTROFFSET);
	92	}
	93
	94	/* Prototype: pata_icside_irqdisable_arcin_v5 (struct expansion_card *ec, int irqnr)
	95	* Purpose : disable interrupts from card
	96	*/
	97	static void pata_icside_irqdisable_arcin_v5 (struct expansion_card *ec, int irqnr)
	98	{
	99	struct pata_icside_state *state = ec->irq_data;
	100
	101	readb(state->irq_port + ICS_ARCIN_V5_INTROFFSET);
	102	}
	103
	104	static const expansioncard_ops_t pata_icside_ops_arcin_v5 = {
	105	.irqenable = pata_icside_irqenable_arcin_v5,
	106	.irqdisable = pata_icside_irqdisable_arcin_v5,
	107	};
	108
	109
	110	/* ---------------- Version 6 PCB Support Functions --------------------- */
	111	/* Prototype: pata_icside_irqenable_arcin_v6 (struct expansion_card *ec, int irqnr)
	112	* Purpose : enable interrupts from card
	113	*/
	114	static void pata_icside_irqenable_arcin_v6 (struct expansion_card *ec, int irqnr)
	115	{
	116	struct pata_icside_state *state = ec->irq_data;
	117	void __iomem *base = state->irq_port;
	118
	119	if (!state->port[0].disabled)
	120	writeb(0, base + ICS_ARCIN_V6_INTROFFSET_1);
	121	if (!state->port[1].disabled)
	122	writeb(0, base + ICS_ARCIN_V6_INTROFFSET_2);
	123	}
	124
	125	/* Prototype: pata_icside_irqdisable_arcin_v6 (struct expansion_card *ec, int irqnr)
	126	* Purpose : disable interrupts from card
	127	*/
	128	static void pata_icside_irqdisable_arcin_v6 (struct expansion_card *ec, int irqnr)
	129	{
	130	struct pata_icside_state *state = ec->irq_data;
	131
	132	readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_1);
	133	readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_2);
	134	}
	135
	136	/* Prototype: pata_icside_irqprobe(struct expansion_card *ec)
	137	* Purpose : detect an active interrupt from card
	138	*/
	139	static int pata_icside_irqpending_arcin_v6(struct expansion_card *ec)
	140	{
141	struct pata_icside_state *state = ec->irq_data;
142
143	return readb(state->irq_port + ICS_ARCIN_V6_INTRSTAT_1) & 1 \|\|
144	readb(state->irq_port + ICS_ARCIN_V6_INTRSTAT_2) & 1;
145	}
146
147	static const expansioncard_ops_t pata_icside_ops_arcin_v6 = {
148	.irqenable = pata_icside_irqenable_arcin_v6,
149	.irqdisable = pata_icside_irqdisable_arcin_v6,
150	.irqpending = pata_icside_irqpending_arcin_v6,
151	};
152
153
154	/*
155	* SG-DMA support.
156	*
157	* Similar to the BM-DMA, but we use the RiscPCs IOMD DMA controllers.
158	* There is only one DMA controller per card, which means that only
159	* one drive can be accessed at one time. NOTE! We do not enforce that
160	* here, but we rely on the main IDE driver spotting that both
161	* interfaces use the same IRQ, which should guarantee this.
162	*/
163
164	/*
165	* Configure the IOMD to give the appropriate timings for the transfer
166	* mode being requested. We take the advice of the ATA standards, and
167	* calculate the cycle time based on the transfer mode, and the EIDE
168	* MW DMA specs that the drive provides in the IDENTIFY command.
169	*
170	* We have the following IOMD DMA modes to choose from:
171	*
172	* Type Active Recovery Cycle
173	* A 250 (250) 312 (550) 562 (800)
174	* B 187 (200) 250 (550) 437 (750)
175	* C 125 (125) 125 (375) 250 (500)
176	* D 62 (50) 125 (375) 187 (425)
177	*
178	* (figures in brackets are actual measured timings on DIOR/DIOW)
179	*
180	* However, we also need to take care of the read/write active and
181	* recovery timings:
182	*
183	* Read Write
184	* Mode Active -- Recovery -- Cycle IOMD type
185	* MW0 215 50 215 480 A
186	* MW1 80 50 50 150 C
187	* MW2 70 25 25 120 C
188	*/
189	static void pata_icside_set_dmamode(struct ata_port ap, struct ata_device adev)
190	{
191	struct pata_icside_state *state = ap->host->private_data;
192	struct ata_timing t;
193	unsigned int cycle;
194	char iomd_type;
195
196	/*
197	* DMA is based on a 16MHz clock
198	*/
199	if (ata_timing_compute(adev, adev->dma_mode, &t, 1000, 1))
200	return;
201
202	/*
203	* Choose the IOMD cycle timing which ensure that the interface
204	* satisfies the measured active, recovery and cycle times.
205	*/
206	if (t.active <= 50 && t.recover <= 375 && t.cycle <= 425)
207	iomd_type = 'D', cycle = 187;
208	else if (t.active <= 125 && t.recover <= 375 && t.cycle <= 500)
209	iomd_type = 'C', cycle = 250;
210	else if (t.active <= 200 && t.recover <= 550 && t.cycle <= 750)
211	iomd_type = 'B', cycle = 437;
212	else
213	iomd_type = 'A', cycle = 562;
214
215	ata_dev_printk(adev, KERN_INFO, "timings: act %dns rec %dns cyc %dns (%c)\n",
216	t.active, t.recover, t.cycle, iomd_type);
217
218	state->port[ap->port_no].speed[adev->devno] = cycle;
219	}
220
221	static void pata_icside_bmdma_setup(struct ata_queued_cmd *qc)
222	{
223	struct ata_port *ap = qc->ap;
224	struct pata_icside_state *state = ap->host->private_data;
225	struct scatterlist sg, rsg = state->sg;
226	unsigned int write = qc->tf.flags & ATA_TFLAG_WRITE;
ff2aeb1e	227	unsigned int si;
73b6a2be RK	228
	229	/*
	230	* We are simplex; BUG if we try to fiddle with DMA
	231	* while it's active.
	232	*/
	233	BUG_ON(dma_channel_active(state->dma));
	234
	235	/*
	236	* Copy ATAs scattered sg list into a contiguous array of sg
	237	*/
ff2aeb1e	238	for_each_sg(qc->sg, sg, qc->n_elem, si) {
73b6a2be RK	239	memcpy(rsg, sg, sizeof(*sg));
	240	rsg++;
	241	}
	242
	243	/*
	244	* Route the DMA signals to the correct interface
	245	*/
	246	writeb(state->port[ap->port_no].port_sel, state->ioc_base);
	247
	248	set_dma_speed(state->dma, state->port[ap->port_no].speed[qc->dev->devno]);
	249	set_dma_sg(state->dma, state->sg, rsg - state->sg);
	250	set_dma_mode(state->dma, write ? DMA_MODE_WRITE : DMA_MODE_READ);
	251
	252	/* issue r/w command */
	253	ap->ops->exec_command(ap, &qc->tf);
	254	}
	255
	256	static void pata_icside_bmdma_start(struct ata_queued_cmd *qc)
	257	{
	258	struct ata_port *ap = qc->ap;
	259	struct pata_icside_state *state = ap->host->private_data;
	260
	261	BUG_ON(dma_channel_active(state->dma));
	262	enable_dma(state->dma);
	263	}
	264
	265	static void pata_icside_bmdma_stop(struct ata_queued_cmd *qc)
	266	{
	267	struct ata_port *ap = qc->ap;
	268	struct pata_icside_state *state = ap->host->private_data;
	269
	270	disable_dma(state->dma);
	271
	272	/* see ata_bmdma_stop */
	273	ata_altstatus(ap);
	274	}
	275
	276	static u8 pata_icside_bmdma_status(struct ata_port *ap)
	277	{
	278	struct pata_icside_state *state = ap->host->private_data;
	279	void __iomem *irq_port;
	280
	281	irq_port = state->irq_port + (ap->port_no ? ICS_ARCIN_V6_INTRSTAT_2 :
	282	ICS_ARCIN_V6_INTRSTAT_1);
	283
	284	return readb(irq_port) & 1 ? ATA_DMA_INTR : 0;
	285	}
	286
f95637d2	287	static int icside_dma_init(struct pata_icside_info *info)
73b6a2be	288	{
f95637d2 RK	289	struct pata_icside_state *state = info->state;
f95637d2 RK	290	struct expansion_card *ec = info->ec;
73b6a2be RK	291	int i;
	292
	293	for (i = 0; i < ATA_MAX_DEVICES; i++) {
	294	state->port[0].speed[i] = 480;
	295	state->port[1].speed[i] = 480;
	296	}
	297
	298	if (ec->dma != NO_DMA && !request_dma(ec->dma, DRV_NAME)) {
	299	state->dma = ec->dma;
f95637d2	300	info->mwdma_mask = 0x07; /* MW0..2 */
73b6a2be RK	301	}
	302
	303	return 0;
	304	}
	305
	306
	307	static int pata_icside_port_start(struct ata_port *ap)
	308	{
	309	/* No PRD to alloc */
	310	return ata_pad_alloc(ap, ap->dev);
	311	}
	312
	313	static struct scsi_host_template pata_icside_sht = {
	314	.module = THIS_MODULE,
	315	.name = DRV_NAME,
	316	.ioctl = ata_scsi_ioctl,
	317	.queuecommand = ata_scsi_queuecmd,
	318	.can_queue = ATA_DEF_QUEUE,
	319	.this_id = ATA_SHT_THIS_ID,
	320	.sg_tablesize = PATA_ICSIDE_MAX_SG,
	321	.cmd_per_lun = ATA_SHT_CMD_PER_LUN,
	322	.emulated = ATA_SHT_EMULATED,
	323	.use_clustering = ATA_SHT_USE_CLUSTERING,
	324	.proc_name = DRV_NAME,
	325	.dma_boundary = ~0, /* no dma boundaries */
	326	.slave_configure = ata_scsi_slave_config,
	327	.slave_destroy = ata_scsi_slave_destroy,
	328	.bios_param = ata_std_bios_param,
	329	};
	330
	331	/* wish this was exported from libata-core */
	332	static void ata_dummy_noret(struct ata_port *port)
	333	{
	334	}
	335
c15fcafe	336	static void pata_icside_postreset(struct ata_link link, unsigned int classes)
73b6a2be	337	{
c15fcafe	338	struct ata_port *ap = link->ap;
73b6a2be RK	339	struct pata_icside_state *state = ap->host->private_data;
73b6a2be RK	340
eba84481	341	if (classes[0] != ATA_DEV_NONE \|\| classes[1] != ATA_DEV_NONE)
c15fcafe	342	return ata_std_postreset(link, classes);
73b6a2be RK	343
	344	state->port[ap->port_no].disabled = 1;
	345
	346	if (state->type == ICS_TYPE_V6) {
	347	/*
	348	* Disable interrupts from this port, otherwise we
	349	* receive spurious interrupts from the floating
	350	* interrupt line.
	351	*/
	352	void __iomem *irq_port = state->irq_port +
	353	(ap->port_no ? ICS_ARCIN_V6_INTROFFSET_2 : ICS_ARCIN_V6_INTROFFSET_1);
	354	readb(irq_port);
	355	}
	356	}
	357
eba84481 RK	358	static void pata_icside_error_handler(struct ata_port *ap)
	359	{
	360	ata_bmdma_drive_eh(ap, ata_std_prereset, ata_std_softreset, NULL,
	361	pata_icside_postreset);
	362	}
	363
73b6a2be	364	static struct ata_port_operations pata_icside_port_ops = {
73b6a2be RK	365	.set_dmamode = pata_icside_set_dmamode,
	366
	367	.tf_load = ata_tf_load,
	368	.tf_read = ata_tf_read,
	369	.exec_command = ata_exec_command,
	370	.check_status = ata_check_status,
	371	.dev_select = ata_std_dev_select,
	372
f95637d2 RK	373	.cable_detect = ata_cable_40wire,
f95637d2 RK	374
73b6a2be RK	375	.bmdma_setup = pata_icside_bmdma_setup,
	376	.bmdma_start = pata_icside_bmdma_start,
	377
	378	.data_xfer = ata_data_xfer_noirq,
	379
	380	/* no need to build any PRD tables for DMA */
	381	.qc_prep = ata_noop_qc_prep,
	382	.qc_issue = ata_qc_issue_prot,
	383
	384	.freeze = ata_bmdma_freeze,
	385	.thaw = ata_bmdma_thaw,
eba84481	386	.error_handler = pata_icside_error_handler,
73b6a2be RK	387	.post_internal_cmd = pata_icside_bmdma_stop,
73b6a2be RK	388
73b6a2be RK	389	.irq_clear = ata_dummy_noret,
73b6a2be RK	390	.irq_on = ata_irq_on,
73b6a2be RK	391
	392	.port_start = pata_icside_port_start,
	393
	394	.bmdma_stop = pata_icside_bmdma_stop,
	395	.bmdma_status = pata_icside_bmdma_status,
	396	};
	397
f95637d2	398	static void __devinit
cbcdd875	399	pata_icside_setup_ioaddr(struct ata_port ap, void __iomem base,
c15fcafe AV	400	struct pata_icside_info *info,
c15fcafe AV	401	const struct portinfo *port)
73b6a2be	402	{
cbcdd875	403	struct ata_ioports *ioaddr = &ap->ioaddr;
c15fcafe	404	void __iomem *cmd = base + port->dataoffset;
73b6a2be RK	405
73b6a2be RK	406	ioaddr->cmd_addr = cmd;
c15fcafe AV	407	ioaddr->data_addr = cmd + (ATA_REG_DATA << port->stepping);
	408	ioaddr->error_addr = cmd + (ATA_REG_ERR << port->stepping);
	409	ioaddr->feature_addr = cmd + (ATA_REG_FEATURE << port->stepping);
	410	ioaddr->nsect_addr = cmd + (ATA_REG_NSECT << port->stepping);
	411	ioaddr->lbal_addr = cmd + (ATA_REG_LBAL << port->stepping);
	412	ioaddr->lbam_addr = cmd + (ATA_REG_LBAM << port->stepping);
	413	ioaddr->lbah_addr = cmd + (ATA_REG_LBAH << port->stepping);
	414	ioaddr->device_addr = cmd + (ATA_REG_DEVICE << port->stepping);
	415	ioaddr->status_addr = cmd + (ATA_REG_STATUS << port->stepping);
	416	ioaddr->command_addr = cmd + (ATA_REG_CMD << port->stepping);
	417
	418	ioaddr->ctl_addr = base + port->ctrloffset;
73b6a2be	419	ioaddr->altstatus_addr = ioaddr->ctl_addr;
cbcdd875 TH	420
cbcdd875 TH	421	ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx",
c15fcafe AV	422	info->raw_base + port->dataoffset,
c15fcafe AV	423	info->raw_base + port->ctrloffset);
cbcdd875 TH	424
	425	if (info->raw_ioc_base)
	426	ata_port_desc(ap, "iocbase 0x%lx", info->raw_ioc_base);
73b6a2be RK	427	}
73b6a2be RK	428
f95637d2	429	static int __devinit pata_icside_register_v5(struct pata_icside_info *info)
73b6a2be	430	{
f95637d2	431	struct pata_icside_state *state = info->state;
73b6a2be RK	432	void __iomem *base;
73b6a2be RK	433
10bdaaa0	434	base = ecardm_iomap(info->ec, ECARD_RES_MEMC, 0, 0);
73b6a2be RK	435	if (!base)
	436	return -ENOMEM;
	437
	438	state->irq_port = base;
	439
f95637d2 RK	440	info->base = base;
	441	info->irqaddr = base + ICS_ARCIN_V5_INTRSTAT;
	442	info->irqmask = 1;
	443	info->irqops = &pata_icside_ops_arcin_v5;
	444	info->nr_ports = 1;
	445	info->port[0] = &pata_icside_portinfo_v5;
73b6a2be	446
c15fcafe	447	info->raw_base = ecard_resource_start(info->ec, ECARD_RES_MEMC);
cbcdd875	448
73b6a2be RK	449	return 0;
	450	}
	451
f95637d2	452	static int __devinit pata_icside_register_v6(struct pata_icside_info *info)
73b6a2be	453	{
f95637d2 RK	454	struct pata_icside_state *state = info->state;
f95637d2 RK	455	struct expansion_card *ec = info->ec;
73b6a2be RK	456	void __iomem ioc_base, easi_base;
73b6a2be RK	457	unsigned int sel = 0;
73b6a2be	458
10bdaaa0 RK	459	ioc_base = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
	460	if (!ioc_base)
	461	return -ENOMEM;
73b6a2be RK	462
	463	easi_base = ioc_base;
	464
	465	if (ecard_resource_flags(ec, ECARD_RES_EASI)) {
10bdaaa0 RK	466	easi_base = ecardm_iomap(ec, ECARD_RES_EASI, 0, 0);
	467	if (!easi_base)
	468	return -ENOMEM;
73b6a2be RK	469
	470	/*
	471	* Enable access to the EASI region.
	472	*/
	473	sel = 1 << 5;
	474	}
	475
	476	writeb(sel, ioc_base);
	477
73b6a2be RK	478	state->irq_port = easi_base;
	479	state->ioc_base = ioc_base;
	480	state->port[0].port_sel = sel;
	481	state->port[1].port_sel = sel \| 1;
	482
f95637d2 RK	483	info->base = easi_base;
	484	info->irqops = &pata_icside_ops_arcin_v6;
	485	info->nr_ports = 2;
	486	info->port[0] = &pata_icside_portinfo_v6_1;
	487	info->port[1] = &pata_icside_portinfo_v6_2;
	488
cbcdd875 TH	489	info->raw_base = ecard_resource_start(ec, ECARD_RES_EASI);
	490	info->raw_ioc_base = ecard_resource_start(ec, ECARD_RES_IOCFAST);
	491
f95637d2 RK	492	return icside_dma_init(info);
	493	}
	494
	495	static int __devinit pata_icside_add_ports(struct pata_icside_info *info)
	496	{
	497	struct expansion_card *ec = info->ec;
	498	struct ata_host *host;
	499	int i;
	500
	501	if (info->irqaddr) {
	502	ec->irqaddr = info->irqaddr;
	503	ec->irqmask = info->irqmask;
	504	}
	505	if (info->irqops)
	506	ecard_setirq(ec, info->irqops, info->state);
	507
	508	/*
	509	* Be on the safe side - disable interrupts
	510	*/
	511	ec->ops->irqdisable(ec, ec->irq);
	512
	513	host = ata_host_alloc(&ec->dev, info->nr_ports);
	514	if (!host)
	515	return -ENOMEM;
	516
	517	host->private_data = info->state;
	518	host->flags = ATA_HOST_SIMPLEX;
	519
	520	for (i = 0; i < info->nr_ports; i++) {
	521	struct ata_port *ap = host->ports[i];
	522
	523	ap->pio_mask = 0x1f;
	524	ap->mwdma_mask = info->mwdma_mask;
1d2808fd	525	ap->flags \|= ATA_FLAG_SLAVE_POSS;
f95637d2 RK	526	ap->ops = &pata_icside_port_ops;
f95637d2 RK	527
c15fcafe	528	pata_icside_setup_ioaddr(ap, info->base, info, info->port[i]);
f95637d2	529	}
73b6a2be	530
f95637d2 RK	531	return ata_host_activate(host, ec->irq, ata_interrupt, 0,
f95637d2 RK	532	&pata_icside_sht);
73b6a2be RK	533	}
	534
	535	static int __devinit
	536	pata_icside_probe(struct expansion_card ec, const struct ecard_id id)
	537	{
	538	struct pata_icside_state *state;
f95637d2	539	struct pata_icside_info info;
73b6a2be RK	540	void __iomem *idmem;
	541	int ret;
	542
	543	ret = ecard_request_resources(ec);
	544	if (ret)
	545	goto out;
	546
f95637d2	547	state = devm_kzalloc(&ec->dev, sizeof(*state), GFP_KERNEL);
73b6a2be RK	548	if (!state) {
	549	ret = -ENOMEM;
	550	goto release;
	551	}
	552
	553	state->type = ICS_TYPE_NOTYPE;
	554	state->dma = NO_DMA;
	555
10bdaaa0	556	idmem = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
73b6a2be RK	557	if (idmem) {
	558	unsigned int type;
	559
	560	type = readb(idmem + ICS_IDENT_OFFSET) & 1;
	561	type \|= (readb(idmem + ICS_IDENT_OFFSET + 4) & 1) << 1;
	562	type \|= (readb(idmem + ICS_IDENT_OFFSET + 8) & 1) << 2;
	563	type \|= (readb(idmem + ICS_IDENT_OFFSET + 12) & 1) << 3;
10bdaaa0	564	ecardm_iounmap(ec, idmem);
73b6a2be RK	565
	566	state->type = type;
	567	}
	568
f95637d2 RK	569	memset(&info, 0, sizeof(info));
	570	info.state = state;
	571	info.ec = ec;
73b6a2be RK	572
	573	switch (state->type) {
	574	case ICS_TYPE_A3IN:
	575	dev_warn(&ec->dev, "A3IN unsupported\n");
	576	ret = -ENODEV;
	577	break;
	578
	579	case ICS_TYPE_A3USER:
	580	dev_warn(&ec->dev, "A3USER unsupported\n");
	581	ret = -ENODEV;
	582	break;
	583
	584	case ICS_TYPE_V5:
f95637d2	585	ret = pata_icside_register_v5(&info);
73b6a2be RK	586	break;
	587
	588	case ICS_TYPE_V6:
f95637d2	589	ret = pata_icside_register_v6(&info);
73b6a2be RK	590	break;
	591
	592	default:
	593	dev_warn(&ec->dev, "unknown interface type\n");
	594	ret = -ENODEV;
	595	break;
	596	}
	597
	598	if (ret == 0)
f95637d2	599	ret = pata_icside_add_ports(&info);
73b6a2be RK	600
	601	if (ret == 0)
	602	goto out;
	603
73b6a2be RK	604	release:
	605	ecard_release_resources(ec);
	606	out:
	607	return ret;
	608	}
	609
	610	static void pata_icside_shutdown(struct expansion_card *ec)
	611	{
	612	struct ata_host *host = ecard_get_drvdata(ec);
	613	unsigned long flags;
	614
	615	/*
	616	* Disable interrupts from this card. We need to do
	617	* this before disabling EASI since we may be accessing
	618	* this register via that region.
	619	*/
	620	local_irq_save(flags);
c7b87f3d	621	ec->ops->irqdisable(ec, ec->irq);
73b6a2be RK	622	local_irq_restore(flags);
	623
	624	/*
	625	* Reset the ROM pointer so that we can read the ROM
	626	* after a soft reboot. This also disables access to
	627	* the IDE taskfile via the EASI region.
	628	*/
	629	if (host) {
	630	struct pata_icside_state *state = host->private_data;
	631	if (state->ioc_base)
	632	writeb(0, state->ioc_base);
	633	}
	634	}
	635
	636	static void __devexit pata_icside_remove(struct expansion_card *ec)
	637	{
	638	struct ata_host *host = ecard_get_drvdata(ec);
	639	struct pata_icside_state *state = host->private_data;
	640
	641	ata_host_detach(host);
	642
	643	pata_icside_shutdown(ec);
	644
	645	/*
	646	* don't NULL out the drvdata - devres/libata wants it
	647	* to free the ata_host structure.
	648	*/
73b6a2be RK	649	if (state->dma != NO_DMA)
73b6a2be RK	650	free_dma(state->dma);
73b6a2be	651
73b6a2be RK	652	ecard_release_resources(ec);
	653	}
	654
	655	static const struct ecard_id pata_icside_ids[] = {
	656	{ MANU_ICS, PROD_ICS_IDE },
	657	{ MANU_ICS2, PROD_ICS2_IDE },
	658	{ 0xffff, 0xffff }
	659	};
	660
	661	static struct ecard_driver pata_icside_driver = {
	662	.probe = pata_icside_probe,
	663	.remove = __devexit_p(pata_icside_remove),
	664	.shutdown = pata_icside_shutdown,
	665	.id_table = pata_icside_ids,
	666	.drv = {
	667	.name = DRV_NAME,
	668	},
	669	};
	670
	671	static int __init pata_icside_init(void)
	672	{
	673	return ecard_register_driver(&pata_icside_driver);
	674	}
	675
	676	static void __exit pata_icside_exit(void)
	677	{
	678	ecard_remove_driver(&pata_icside_driver);
	679	}
	680
	681	MODULE_AUTHOR("Russell King <[email protected]>");
	682	MODULE_LICENSE("GPL");
	683	MODULE_DESCRIPTION("ICS PATA driver");
	684
	685	module_init(pata_icside_init);
	686	module_exit(pata_icside_exit);