[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / ide / icside.c

/*
 * Copyright (c) 1996-2004 Russell King.
 *
 * Please note that this platform does not support 32-bit IDE IO.
 */

#include <linux/string.h>
#include <linux/module.h>
#include <linux/ioport.h>
#include <linux/slab.h>
#include <linux/blkdev.h>
#include <linux/errno.h>
#include <linux/ide.h>
#include <linux/dma-mapping.h>
#include <linux/device.h>
#include <linux/init.h>
#include <linux/scatterlist.h>
#include <linux/io.h>

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

#define DRV_NAME "icside"

#define ICS_IDENT_OFFSET		0x2280

#define ICS_ARCIN_V5_INTRSTAT		0x0000
#define ICS_ARCIN_V5_INTROFFSET		0x0004
#define ICS_ARCIN_V5_IDEOFFSET		0x2800
#define ICS_ARCIN_V5_IDEALTOFFSET	0x2b80
#define ICS_ARCIN_V5_IDESTEPPING	6

#define ICS_ARCIN_V6_IDEOFFSET_1	0x2000
#define ICS_ARCIN_V6_INTROFFSET_1	0x2200
#define ICS_ARCIN_V6_INTRSTAT_1		0x2290
#define ICS_ARCIN_V6_IDEALTOFFSET_1	0x2380
#define ICS_ARCIN_V6_IDEOFFSET_2	0x3000
#define ICS_ARCIN_V6_INTROFFSET_2	0x3200
#define ICS_ARCIN_V6_INTRSTAT_2		0x3290
#define ICS_ARCIN_V6_IDEALTOFFSET_2	0x3380
#define ICS_ARCIN_V6_IDESTEPPING	6

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

static struct cardinfo icside_cardinfo_v5 = {
	.dataoffset	= ICS_ARCIN_V5_IDEOFFSET,
	.ctrloffset	= ICS_ARCIN_V5_IDEALTOFFSET,
	.stepping	= ICS_ARCIN_V5_IDESTEPPING,
};

static struct cardinfo icside_cardinfo_v6_1 = {
	.dataoffset	= ICS_ARCIN_V6_IDEOFFSET_1,
	.ctrloffset	= ICS_ARCIN_V6_IDEALTOFFSET_1,
	.stepping	= ICS_ARCIN_V6_IDESTEPPING,
};

static struct cardinfo icside_cardinfo_v6_2 = {
	.dataoffset	= ICS_ARCIN_V6_IDEOFFSET_2,
	.ctrloffset	= ICS_ARCIN_V6_IDEALTOFFSET_2,
	.stepping	= ICS_ARCIN_V6_IDESTEPPING,
};

struct icside_state {
	unsigned int channel;
	unsigned int enabled;
	void __iomem *irq_port;
	void __iomem *ioc_base;
	unsigned int sel;
	unsigned int type;
	struct ide_host *host;
};

#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: icside_irqenable_arcin_v5 (struct expansion_card *ec, int irqnr)
 * Purpose  : enable interrupts from card
 */
static void icside_irqenable_arcin_v5 (struct expansion_card *ec, int irqnr)
{
	struct icside_state *state = ec->irq_data;

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

/* Prototype: icside_irqdisable_arcin_v5 (struct expansion_card *ec, int irqnr)
 * Purpose  : disable interrupts from card
 */
static void icside_irqdisable_arcin_v5 (struct expansion_card *ec, int irqnr)
{
	struct icside_state *state = ec->irq_data;

	readb(state->irq_port + ICS_ARCIN_V5_INTROFFSET);
}

static const expansioncard_ops_t icside_ops_arcin_v5 = {
	.irqenable	= icside_irqenable_arcin_v5,
	.irqdisable	= icside_irqdisable_arcin_v5,
};


/* ---------------- Version 6 PCB Support Functions --------------------- */
/* Prototype: icside_irqenable_arcin_v6 (struct expansion_card *ec, int irqnr)
 * Purpose  : enable interrupts from card
 */
static void icside_irqenable_arcin_v6 (struct expansion_card *ec, int irqnr)
{
	struct icside_state *state = ec->irq_data;
	void __iomem *base = state->irq_port;

	state->enabled = 1;

	switch (state->channel) {
	case 0:
		writeb(0, base + ICS_ARCIN_V6_INTROFFSET_1);
		readb(base + ICS_ARCIN_V6_INTROFFSET_2);
		break;
	case 1:
		writeb(0, base + ICS_ARCIN_V6_INTROFFSET_2);
		readb(base + ICS_ARCIN_V6_INTROFFSET_1);
		break;
	}
}

/* Prototype: icside_irqdisable_arcin_v6 (struct expansion_card *ec, int irqnr)
 * Purpose  : disable interrupts from card
 */
static void icside_irqdisable_arcin_v6 (struct expansion_card *ec, int irqnr)
{
	struct icside_state *state = ec->irq_data;

	state->enabled = 0;

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

/* Prototype: icside_irqprobe(struct expansion_card *ec)
 * Purpose  : detect an active interrupt from card
 */
static int icside_irqpending_arcin_v6(struct expansion_card *ec)
{
	struct 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 icside_ops_arcin_v6 = {
	.irqenable	= icside_irqenable_arcin_v6,
	.irqdisable	= icside_irqdisable_arcin_v6,
	.irqpending	= icside_irqpending_arcin_v6,
};

/*
 * Handle routing of interrupts.  This is called before
 * we write the command to the drive.
 */
static void icside_maskproc(ide_drive_t *drive, int mask)
{
	ide_hwif_t *hwif = drive->hwif;
	struct expansion_card *ec = ECARD_DEV(hwif->dev);
	struct icside_state *state = ecard_get_drvdata(ec);
	unsigned long flags;

	local_irq_save(flags);

	state->channel = hwif->channel;

	if (state->enabled && !mask) {
		switch (hwif->channel) {
		case 0:
			writeb(0, state->irq_port + ICS_ARCIN_V6_INTROFFSET_1);
			readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_2);
			break;
		case 1:
			writeb(0, state->irq_port + ICS_ARCIN_V6_INTROFFSET_2);
			readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_1);
			break;
		}
	} else {
		readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_2);
		readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_1);
	}

	local_irq_restore(flags);
}

static const struct ide_port_ops icside_v6_no_dma_port_ops = {
	.maskproc		= icside_maskproc,
};

#ifdef CONFIG_BLK_DEV_IDEDMA_ICS
/*
 * 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		250		437
 *	C	125 (125)	125 (375)	250 (500)
 *	D	62		125		187
 *
 * (figures in brackets are actual measured timings)
 *
 * 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 icside_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive)
{
	unsigned long cycle_time = 0;
	int use_dma_info = 0;
	const u8 xfer_mode = drive->dma_mode;

	switch (xfer_mode) {
	case XFER_MW_DMA_2:
		cycle_time = 250;
		use_dma_info = 1;
		break;

	case XFER_MW_DMA_1:
		cycle_time = 250;
		use_dma_info = 1;
		break;

	case XFER_MW_DMA_0:
		cycle_time = 480;
		break;

	case XFER_SW_DMA_2:
	case XFER_SW_DMA_1:
	case XFER_SW_DMA_0:
		cycle_time = 480;
		break;
	}

	/*
	 * If we're going to be doing MW_DMA_1 or MW_DMA_2, we should
	 * take care to note the values in the ID...
	 */
	if (use_dma_info && drive->id[ATA_ID_EIDE_DMA_TIME] > cycle_time)
		cycle_time = drive->id[ATA_ID_EIDE_DMA_TIME];

	ide_set_drivedata(drive, (void *)cycle_time);

	printk(KERN_INFO "%s: %s selected (peak %luMB/s)\n",
	       drive->name, ide_xfer_verbose(xfer_mode),
	       2000 / (cycle_time ? cycle_time : (unsigned long) -1));
}

static const struct ide_port_ops icside_v6_port_ops = {
	.set_dma_mode		= icside_set_dma_mode,
	.maskproc		= icside_maskproc,
};

static void icside_dma_host_set(ide_drive_t *drive, int on)
{
}

static int icside_dma_end(ide_drive_t *drive)
{
	ide_hwif_t *hwif = drive->hwif;
	struct expansion_card *ec = ECARD_DEV(hwif->dev);

	disable_dma(ec->dma);

	return get_dma_residue(ec->dma) != 0;
}

static void icside_dma_start(ide_drive_t *drive)
{
	ide_hwif_t *hwif = drive->hwif;
	struct expansion_card *ec = ECARD_DEV(hwif->dev);

	/* We can not enable DMA on both channels simultaneously. */
	BUG_ON(dma_channel_active(ec->dma));
	enable_dma(ec->dma);
}

static int icside_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd)
{
	ide_hwif_t *hwif = drive->hwif;
	struct expansion_card *ec = ECARD_DEV(hwif->dev);
	struct icside_state *state = ecard_get_drvdata(ec);
	unsigned int dma_mode;

	if (cmd->tf_flags & IDE_TFLAG_WRITE)
		dma_mode = DMA_MODE_WRITE;
	else
		dma_mode = DMA_MODE_READ;

	/*
	 * We can not enable DMA on both channels.
	 */
	BUG_ON(dma_channel_active(ec->dma));

	/*
	 * Ensure that we have the right interrupt routed.
	 */
	icside_maskproc(drive, 0);

	/*
	 * Route the DMA signals to the correct interface.
	 */
	writeb(state->sel | hwif->channel, state->ioc_base);

	/*
	 * Select the correct timing for this drive.
	 */
	set_dma_speed(ec->dma, (unsigned long)ide_get_drivedata(drive));

	/*
	 * Tell the DMA engine about the SG table and
	 * data direction.
	 */
	set_dma_sg(ec->dma, hwif->sg_table, cmd->sg_nents);
	set_dma_mode(ec->dma, dma_mode);

	return 0;
}

static int icside_dma_test_irq(ide_drive_t *drive)
{
	ide_hwif_t *hwif = drive->hwif;
	struct expansion_card *ec = ECARD_DEV(hwif->dev);
	struct icside_state *state = ecard_get_drvdata(ec);

	return readb(state->irq_port +
		     (hwif->channel ?
			ICS_ARCIN_V6_INTRSTAT_2 :
			ICS_ARCIN_V6_INTRSTAT_1)) & 1;
}

static int icside_dma_init(ide_hwif_t *hwif, const struct ide_port_info *d)
{
	hwif->dmatable_cpu	= NULL;
	hwif->dmatable_dma	= 0;

	return 0;
}

static const struct ide_dma_ops icside_v6_dma_ops = {
	.dma_host_set		= icside_dma_host_set,
	.dma_setup		= icside_dma_setup,
	.dma_start		= icside_dma_start,
	.dma_end		= icside_dma_end,
	.dma_test_irq		= icside_dma_test_irq,
	.dma_lost_irq		= ide_dma_lost_irq,
};
#endif

static int icside_dma_off_init(ide_hwif_t *hwif, const struct ide_port_info *d)
{
	return -EOPNOTSUPP;
}

static void icside_setup_ports(struct ide_hw *hw, void __iomem *base,
			       struct cardinfo *info, struct expansion_card *ec)
{
	unsigned long port = (unsigned long)base + info->dataoffset;

	hw->io_ports.data_addr	 = port;
	hw->io_ports.error_addr	 = port + (1 << info->stepping);
	hw->io_ports.nsect_addr	 = port + (2 << info->stepping);
	hw->io_ports.lbal_addr	 = port + (3 << info->stepping);
	hw->io_ports.lbam_addr	 = port + (4 << info->stepping);
	hw->io_ports.lbah_addr	 = port + (5 << info->stepping);
	hw->io_ports.device_addr = port + (6 << info->stepping);
	hw->io_ports.status_addr = port + (7 << info->stepping);
	hw->io_ports.ctl_addr	 = (unsigned long)base + info->ctrloffset;

	hw->irq = ec->irq;
	hw->dev = &ec->dev;
}

static const struct ide_port_info icside_v5_port_info = {
	.host_flags		= IDE_HFLAG_NO_DMA,
	.chipset		= ide_acorn,
};

static int icside_register_v5(struct icside_state *state,
			      struct expansion_card *ec)
{
	void __iomem *base;
	struct ide_host *host;
	struct ide_hw hw, *hws[] = { &hw };
	int ret;

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

	state->irq_port = base;

	ec->irqaddr  = base + ICS_ARCIN_V5_INTRSTAT;
	ec->irqmask  = 1;

	ecard_setirq(ec, &icside_ops_arcin_v5, state);

	/*
	 * Be on the safe side - disable interrupts
	 */
	icside_irqdisable_arcin_v5(ec, 0);

	icside_setup_ports(&hw, base, &icside_cardinfo_v5, ec);

	host = ide_host_alloc(&icside_v5_port_info, hws, 1);
	if (host == NULL)
		return -ENODEV;

	state->host = host;

	ecard_set_drvdata(ec, state);

	ret = ide_host_register(host, &icside_v5_port_info, hws);
	if (ret)
		goto err_free;

	return 0;
err_free:
	ide_host_free(host);
	ecard_set_drvdata(ec, NULL);
	return ret;
}

static const struct ide_port_info icside_v6_port_info __initconst = {
	.init_dma		= icside_dma_off_init,
	.port_ops		= &icside_v6_no_dma_port_ops,
	.host_flags		= IDE_HFLAG_SERIALIZE | IDE_HFLAG_MMIO,
	.mwdma_mask		= ATA_MWDMA2,
	.swdma_mask		= ATA_SWDMA2,
	.chipset		= ide_acorn,
};

static int icside_register_v6(struct icside_state *state,
			      struct expansion_card *ec)
{
	void __iomem *ioc_base, *easi_base;
	struct ide_host *host;
	unsigned int sel = 0;
	int ret;
	struct ide_hw hw[2], *hws[] = { &hw[0], &hw[1] };
	struct ide_port_info d = icside_v6_port_info;

	ioc_base = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
	if (!ioc_base) {
		ret = -ENOMEM;
		goto out;
	}

	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) {
			ret = -ENOMEM;
			goto out;
		}

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

	writeb(sel, ioc_base);

	ecard_setirq(ec, &icside_ops_arcin_v6, state);

	state->irq_port   = easi_base;
	state->ioc_base   = ioc_base;
	state->sel	  = sel;

	/*
	 * Be on the safe side - disable interrupts
	 */
	icside_irqdisable_arcin_v6(ec, 0);

	icside_setup_ports(&hw[0], easi_base, &icside_cardinfo_v6_1, ec);
	icside_setup_ports(&hw[1], easi_base, &icside_cardinfo_v6_2, ec);

	host = ide_host_alloc(&d, hws, 2);
	if (host == NULL)
		return -ENODEV;

	state->host = host;

	ecard_set_drvdata(ec, state);

#ifdef CONFIG_BLK_DEV_IDEDMA_ICS
	if (ec->dma != NO_DMA && !request_dma(ec->dma, DRV_NAME)) {
		d.init_dma = icside_dma_init;
		d.port_ops = &icside_v6_port_ops;
		d.dma_ops  = &icside_v6_dma_ops;
	}
#endif

	ret = ide_host_register(host, &d, hws);
	if (ret)
		goto err_free;

	return 0;
err_free:
	ide_host_free(host);
	if (d.dma_ops)
		free_dma(ec->dma);
	ecard_set_drvdata(ec, NULL);
out:
	return ret;
}

static int icside_probe(struct expansion_card *ec, const struct ecard_id *id)
{
	struct icside_state *state;
	void __iomem *idmem;
	int ret;

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

	state = kzalloc(sizeof(struct icside_state), GFP_KERNEL);
	if (!state) {
		ret = -ENOMEM;
		goto release;
	}

	state->type	= ICS_TYPE_NOTYPE;

	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;
	}

	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 = icside_register_v5(state, ec);
		break;

	case ICS_TYPE_V6:
		ret = icside_register_v6(state, ec);
		break;

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

	if (ret == 0)
		goto out;

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

static void icside_remove(struct expansion_card *ec)
{
	struct icside_state *state = ecard_get_drvdata(ec);

	switch (state->type) {
	case ICS_TYPE_V5:
		/* FIXME: tell IDE to stop using the interface */

		/* Disable interrupts */
		icside_irqdisable_arcin_v5(ec, 0);
		break;

	case ICS_TYPE_V6:
		/* FIXME: tell IDE to stop using the interface */
		if (ec->dma != NO_DMA)
			free_dma(ec->dma);

		/* Disable interrupts */
		icside_irqdisable_arcin_v6(ec, 0);

		/* Reset the ROM pointer/EASI selection */
		writeb(0, state->ioc_base);
		break;
	}

	ecard_set_drvdata(ec, NULL);

	kfree(state);
	ecard_release_resources(ec);
}

static void icside_shutdown(struct expansion_card *ec)
{
	struct icside_state *state = 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, 0);
	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 (state->ioc_base)
		writeb(0, state->ioc_base);
}

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

static struct ecard_driver icside_driver = {
	.probe		= icside_probe,
	.remove		= icside_remove,
	.shutdown	= icside_shutdown,
	.id_table	= icside_ids,
	.drv = {
		.name	= "icside",
	},
};

static int __init icside_init(void)
{
	return ecard_register_driver(&icside_driver);
}

static void __exit icside_exit(void)
{
	ecard_remove_driver(&icside_driver);
}

MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("ICS IDE driver");

module_init(icside_init);
module_exit(icside_exit);
Commit	Line	Data
1da177e4	1	/*
1da177e4 LT	2	* Copyright (c) 1996-2004 Russell King.
	3	*
	4	* Please note that this platform does not support 32-bit IDE IO.
	5	*/
	6
1da177e4 LT	7	#include <linux/string.h>
	8	#include <linux/module.h>
	9	#include <linux/ioport.h>
	10	#include <linux/slab.h>
	11	#include <linux/blkdev.h>
	12	#include <linux/errno.h>
1da177e4 LT	13	#include <linux/ide.h>
	14	#include <linux/dma-mapping.h>
	15	#include <linux/device.h>
	16	#include <linux/init.h>
	17	#include <linux/scatterlist.h>
ba5b55d0	18	#include <linux/io.h>
1da177e4 LT	19
	20	#include <asm/dma.h>
	21	#include <asm/ecard.h>
1da177e4	22
67717e22 BZ	23	#define DRV_NAME "icside"
67717e22 BZ	24
1da177e4 LT	25	#define ICS_IDENT_OFFSET 0x2280
	26
	27	#define ICS_ARCIN_V5_INTRSTAT 0x0000
	28	#define ICS_ARCIN_V5_INTROFFSET 0x0004
	29	#define ICS_ARCIN_V5_IDEOFFSET 0x2800
	30	#define ICS_ARCIN_V5_IDEALTOFFSET 0x2b80
	31	#define ICS_ARCIN_V5_IDESTEPPING 6
	32
	33	#define ICS_ARCIN_V6_IDEOFFSET_1 0x2000
	34	#define ICS_ARCIN_V6_INTROFFSET_1 0x2200
	35	#define ICS_ARCIN_V6_INTRSTAT_1 0x2290
	36	#define ICS_ARCIN_V6_IDEALTOFFSET_1 0x2380
	37	#define ICS_ARCIN_V6_IDEOFFSET_2 0x3000
	38	#define ICS_ARCIN_V6_INTROFFSET_2 0x3200
	39	#define ICS_ARCIN_V6_INTRSTAT_2 0x3290
	40	#define ICS_ARCIN_V6_IDEALTOFFSET_2 0x3380
	41	#define ICS_ARCIN_V6_IDESTEPPING 6
	42
	43	struct cardinfo {
	44	unsigned int dataoffset;
	45	unsigned int ctrloffset;
	46	unsigned int stepping;
	47	};
	48
	49	static struct cardinfo icside_cardinfo_v5 = {
	50	.dataoffset = ICS_ARCIN_V5_IDEOFFSET,
	51	.ctrloffset = ICS_ARCIN_V5_IDEALTOFFSET,
	52	.stepping = ICS_ARCIN_V5_IDESTEPPING,
	53	};
	54
	55	static struct cardinfo icside_cardinfo_v6_1 = {
	56	.dataoffset = ICS_ARCIN_V6_IDEOFFSET_1,
	57	.ctrloffset = ICS_ARCIN_V6_IDEALTOFFSET_1,
	58	.stepping = ICS_ARCIN_V6_IDESTEPPING,
	59	};
	60
	61	static struct cardinfo icside_cardinfo_v6_2 = {
	62	.dataoffset = ICS_ARCIN_V6_IDEOFFSET_2,
	63	.ctrloffset = ICS_ARCIN_V6_IDEALTOFFSET_2,
	64	.stepping = ICS_ARCIN_V6_IDESTEPPING,
	65	};
	66
	67	struct icside_state {
f75d4a23 BZ	68	unsigned int channel;
f75d4a23 BZ	69	unsigned int enabled;
1da177e4 LT	70	void __iomem *irq_port;
1da177e4 LT	71	void __iomem *ioc_base;
26839f09	72	unsigned int sel;
1da177e4	73	unsigned int type;
48c3c107	74	struct ide_host *host;
1da177e4 LT	75	};
	76
	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: icside_irqenable_arcin_v5 (struct expansion_card *ec, int irqnr)
	85	* Purpose : enable interrupts from card
	86	*/
	87	static void icside_irqenable_arcin_v5 (struct expansion_card *ec, int irqnr)
	88	{
	89	struct icside_state *state = ec->irq_data;
	90
	91	writeb(0, state->irq_port + ICS_ARCIN_V5_INTROFFSET);
	92	}
	93
	94	/* Prototype: icside_irqdisable_arcin_v5 (struct expansion_card *ec, int irqnr)
	95	* Purpose : disable interrupts from card
	96	*/
	97	static void icside_irqdisable_arcin_v5 (struct expansion_card *ec, int irqnr)
	98	{
	99	struct icside_state *state = ec->irq_data;
	100
	101	readb(state->irq_port + ICS_ARCIN_V5_INTROFFSET);
	102	}
	103
	104	static const expansioncard_ops_t icside_ops_arcin_v5 = {
	105	.irqenable = icside_irqenable_arcin_v5,
	106	.irqdisable = icside_irqdisable_arcin_v5,
	107	};
	108
	109
	110	/* ---------------- Version 6 PCB Support Functions --------------------- */
	111	/* Prototype: icside_irqenable_arcin_v6 (struct expansion_card *ec, int irqnr)
	112	* Purpose : enable interrupts from card
	113	*/
	114	static void icside_irqenable_arcin_v6 (struct expansion_card *ec, int irqnr)
	115	{
	116	struct icside_state *state = ec->irq_data;
	117	void __iomem *base = state->irq_port;
	118
f75d4a23	119	state->enabled = 1;
1da177e4	120
f75d4a23 BZ	121	switch (state->channel) {
	122	case 0:
	123	writeb(0, base + ICS_ARCIN_V6_INTROFFSET_1);
	124	readb(base + ICS_ARCIN_V6_INTROFFSET_2);
	125	break;
	126	case 1:
	127	writeb(0, base + ICS_ARCIN_V6_INTROFFSET_2);
	128	readb(base + ICS_ARCIN_V6_INTROFFSET_1);
	129	break;
	130	}
1da177e4 LT	131	}
	132
	133	/* Prototype: icside_irqdisable_arcin_v6 (struct expansion_card *ec, int irqnr)
	134	* Purpose : disable interrupts from card
	135	*/
	136	static void icside_irqdisable_arcin_v6 (struct expansion_card *ec, int irqnr)
	137	{
	138	struct icside_state *state = ec->irq_data;
	139
f75d4a23 BZ	140	state->enabled = 0;
f75d4a23 BZ	141
1da177e4 LT	142	readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_1);
	143	readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_2);
	144	}
	145
	146	/* Prototype: icside_irqprobe(struct expansion_card *ec)
	147	* Purpose : detect an active interrupt from card
	148	*/
	149	static int icside_irqpending_arcin_v6(struct expansion_card *ec)
	150	{
	151	struct icside_state *state = ec->irq_data;
	152
	153	return readb(state->irq_port + ICS_ARCIN_V6_INTRSTAT_1) & 1 \|\|
	154	readb(state->irq_port + ICS_ARCIN_V6_INTRSTAT_2) & 1;
	155	}
	156
	157	static const expansioncard_ops_t icside_ops_arcin_v6 = {
	158	.irqenable = icside_irqenable_arcin_v6,
	159	.irqdisable = icside_irqdisable_arcin_v6,
	160	.irqpending = icside_irqpending_arcin_v6,
	161	};
	162
f75d4a23 BZ	163	/*
	164	* Handle routing of interrupts. This is called before
	165	* we write the command to the drive.
	166	*/
	167	static void icside_maskproc(ide_drive_t *drive, int mask)
	168	{
	169	ide_hwif_t *hwif = drive->hwif;
	170	struct expansion_card *ec = ECARD_DEV(hwif->dev);
	171	struct icside_state *state = ecard_get_drvdata(ec);
	172	unsigned long flags;
	173
	174	local_irq_save(flags);
	175
	176	state->channel = hwif->channel;
	177
	178	if (state->enabled && !mask) {
	179	switch (hwif->channel) {
	180	case 0:
	181	writeb(0, state->irq_port + ICS_ARCIN_V6_INTROFFSET_1);
	182	readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_2);
	183	break;
	184	case 1:
	185	writeb(0, state->irq_port + ICS_ARCIN_V6_INTROFFSET_2);
	186	readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_1);
	187	break;
	188	}
	189	} else {
	190	readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_2);
	191	readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_1);
	192	}
	193
	194	local_irq_restore(flags);
	195	}
	196
	197	static const struct ide_port_ops icside_v6_no_dma_port_ops = {
	198	.maskproc = icside_maskproc,
	199	};
	200
1da177e4	201	#ifdef CONFIG_BLK_DEV_IDEDMA_ICS
1da177e4 LT	202	/*
	203	* SG-DMA support.
	204	*
	205	* Similar to the BM-DMA, but we use the RiscPCs IOMD DMA controllers.
	206	* There is only one DMA controller per card, which means that only
	207	* one drive can be accessed at one time. NOTE! We do not enforce that
	208	* here, but we rely on the main IDE driver spotting that both
	209	* interfaces use the same IRQ, which should guarantee this.
	210	*/
	211
1da177e4 LT	212	/*
	213	* Configure the IOMD to give the appropriate timings for the transfer
	214	* mode being requested. We take the advice of the ATA standards, and
	215	* calculate the cycle time based on the transfer mode, and the EIDE
	216	* MW DMA specs that the drive provides in the IDENTIFY command.
	217	*
	218	* We have the following IOMD DMA modes to choose from:
	219	*
	220	* Type Active Recovery Cycle
	221	* A 250 (250) 312 (550) 562 (800)
	222	* B 187 250 437
	223	* C 125 (125) 125 (375) 250 (500)
	224	* D 62 125 187
	225	*
	226	* (figures in brackets are actual measured timings)
	227	*
	228	* However, we also need to take care of the read/write active and
	229	* recovery timings:
	230	*
	231	* Read Write
	232	* Mode Active -- Recovery -- Cycle IOMD type
	233	* MW0 215 50 215 480 A
	234	* MW1 80 50 50 150 C
	235	* MW2 70 25 25 120 C
	236	*/
8776168c	237	static void icside_set_dma_mode(ide_hwif_t hwif, ide_drive_t drive)
1da177e4	238	{
027253c1	239	unsigned long cycle_time = 0;
5bfb151f	240	int use_dma_info = 0;
8776168c	241	const u8 xfer_mode = drive->dma_mode;
1da177e4	242
1da177e4 LT	243	switch (xfer_mode) {
	244	case XFER_MW_DMA_2:
	245	cycle_time = 250;
	246	use_dma_info = 1;
	247	break;
	248
	249	case XFER_MW_DMA_1:
	250	cycle_time = 250;
	251	use_dma_info = 1;
	252	break;
	253
	254	case XFER_MW_DMA_0:
	255	cycle_time = 480;
	256	break;
	257
	258	case XFER_SW_DMA_2:
	259	case XFER_SW_DMA_1:
	260	case XFER_SW_DMA_0:
	261	cycle_time = 480;
	262	break;
	263	}
	264
	265	/*
	266	* If we're going to be doing MW_DMA_1 or MW_DMA_2, we should
	267	* take care to note the values in the ID...
	268	*/
4dde4492 BZ	269	if (use_dma_info && drive->id[ATA_ID_EIDE_DMA_TIME] > cycle_time)
4dde4492 BZ	270	cycle_time = drive->id[ATA_ID_EIDE_DMA_TIME];
1da177e4	271
5bfb151f	272	ide_set_drivedata(drive, (void *)cycle_time);
1da177e4	273
027253c1 CD	274	printk(KERN_INFO "%s: %s selected (peak %luMB/s)\n",
	275	drive->name, ide_xfer_verbose(xfer_mode),
	276	2000 / (cycle_time ? cycle_time : (unsigned long) -1));
1da177e4 LT	277	}
1da177e4 LT	278
ac95beed BZ	279	static const struct ide_port_ops icside_v6_port_ops = {
ac95beed BZ	280	.set_dma_mode = icside_set_dma_mode,
f75d4a23	281	.maskproc = icside_maskproc,
ac95beed BZ	282	};
ac95beed BZ	283
15ce926a	284	static void icside_dma_host_set(ide_drive_t *drive, int on)
1da177e4	285	{
1da177e4 LT	286	}
1da177e4 LT	287
1da177e4 LT	288	static int icside_dma_end(ide_drive_t *drive)
1da177e4 LT	289	{
898ec223	290	ide_hwif_t *hwif = drive->hwif;
f8341c1c	291	struct expansion_card *ec = ECARD_DEV(hwif->dev);
1da177e4	292
f8341c1c	293	disable_dma(ec->dma);
1da177e4	294
f8341c1c	295	return get_dma_residue(ec->dma) != 0;
1da177e4 LT	296	}
	297
	298	static void icside_dma_start(ide_drive_t *drive)
	299	{
898ec223	300	ide_hwif_t *hwif = drive->hwif;
f8341c1c	301	struct expansion_card *ec = ECARD_DEV(hwif->dev);
1da177e4 LT	302
1da177e4 LT	303	/* We can not enable DMA on both channels simultaneously. */
f8341c1c BZ	304	BUG_ON(dma_channel_active(ec->dma));
f8341c1c BZ	305	enable_dma(ec->dma);
1da177e4 LT	306	}
1da177e4 LT	307
22981694	308	static int icside_dma_setup(ide_drive_t drive, struct ide_cmd cmd)
1da177e4	309	{
898ec223	310	ide_hwif_t *hwif = drive->hwif;
f8341c1c	311	struct expansion_card *ec = ECARD_DEV(hwif->dev);
26839f09	312	struct icside_state *state = ecard_get_drvdata(ec);
1da177e4 LT	313	unsigned int dma_mode;
1da177e4 LT	314
22981694	315	if (cmd->tf_flags & IDE_TFLAG_WRITE)
1da177e4 LT	316	dma_mode = DMA_MODE_WRITE;
	317	else
	318	dma_mode = DMA_MODE_READ;
	319
	320	/*
	321	* We can not enable DMA on both channels.
	322	*/
f8341c1c	323	BUG_ON(dma_channel_active(ec->dma));
1da177e4	324
f75d4a23 BZ	325	/*
	326	* Ensure that we have the right interrupt routed.
	327	*/
	328	icside_maskproc(drive, 0);
	329
1da177e4 LT	330	/*
	331	* Route the DMA signals to the correct interface.
	332	*/
26839f09	333	writeb(state->sel \| hwif->channel, state->ioc_base);
1da177e4 LT	334
	335	/*
	336	* Select the correct timing for this drive.
	337	*/
5bfb151f	338	set_dma_speed(ec->dma, (unsigned long)ide_get_drivedata(drive));
1da177e4 LT	339
	340	/*
	341	* Tell the DMA engine about the SG table and
	342	* data direction.
	343	*/
22981694	344	set_dma_sg(ec->dma, hwif->sg_table, cmd->sg_nents);
f8341c1c	345	set_dma_mode(ec->dma, dma_mode);
1da177e4	346
1da177e4 LT	347	return 0;
	348	}
	349
1da177e4 LT	350	static int icside_dma_test_irq(ide_drive_t *drive)
1da177e4 LT	351	{
898ec223	352	ide_hwif_t *hwif = drive->hwif;
26839f09 BZ	353	struct expansion_card *ec = ECARD_DEV(hwif->dev);
26839f09 BZ	354	struct icside_state *state = ecard_get_drvdata(ec);
1da177e4 LT	355
	356	return readb(state->irq_port +
	357	(hwif->channel ?
	358	ICS_ARCIN_V6_INTRSTAT_2 :
	359	ICS_ARCIN_V6_INTRSTAT_1)) & 1;
	360	}
	361
91432f48	362	static int icside_dma_init(ide_hwif_t hwif, const struct ide_port_info d)
1da177e4	363	{
1da177e4 LT	364	hwif->dmatable_cpu = NULL;
1da177e4 LT	365	hwif->dmatable_dma = 0;
1da177e4	366
91432f48	367	return 0;
1da177e4	368	}
5e37bdc0	369
f37afdac	370	static const struct ide_dma_ops icside_v6_dma_ops = {
5e37bdc0 BZ	371	.dma_host_set = icside_dma_host_set,
5e37bdc0 BZ	372	.dma_setup = icside_dma_setup,
5e37bdc0 BZ	373	.dma_start = icside_dma_start,
	374	.dma_end = icside_dma_end,
	375	.dma_test_irq = icside_dma_test_irq,
de23ec9c	376	.dma_lost_irq = ide_dma_lost_irq,
5e37bdc0	377	};
1da177e4 LT	378	#endif
1da177e4 LT	379
91432f48 BZ	380	static int icside_dma_off_init(ide_hwif_t hwif, const struct ide_port_info d)
	381	{
	382	return -EOPNOTSUPP;
	383	}
	384
9f36d314	385	static void icside_setup_ports(struct ide_hw hw, void __iomem base,
b25afdf1	386	struct cardinfo info, struct expansion_card ec)
1da177e4 LT	387	{
1da177e4 LT	388	unsigned long port = (unsigned long)base + info->dataoffset;
1da177e4	389
b25afdf1 BZ	390	hw->io_ports.data_addr = port;
	391	hw->io_ports.error_addr = port + (1 << info->stepping);
	392	hw->io_ports.nsect_addr = port + (2 << info->stepping);
	393	hw->io_ports.lbal_addr = port + (3 << info->stepping);
	394	hw->io_ports.lbam_addr = port + (4 << info->stepping);
	395	hw->io_ports.lbah_addr = port + (5 << info->stepping);
	396	hw->io_ports.device_addr = port + (6 << info->stepping);
	397	hw->io_ports.status_addr = port + (7 << info->stepping);
	398	hw->io_ports.ctl_addr = (unsigned long)base + info->ctrloffset;
	399
	400	hw->irq = ec->irq;
	401	hw->dev = &ec->dev;
1da177e4 LT	402	}
1da177e4 LT	403
33050ec7 BZ	404	static const struct ide_port_info icside_v5_port_info = {
33050ec7 BZ	405	.host_flags = IDE_HFLAG_NO_DMA,
29e52cf7	406	.chipset = ide_acorn,
33050ec7 BZ	407	};
33050ec7 BZ	408
fe31edc8 GKH	409	static int icside_register_v5(struct icside_state *state,
fe31edc8 GKH	410	struct expansion_card *ec)
1da177e4	411	{
1da177e4	412	void __iomem *base;
48c3c107	413	struct ide_host *host;
9f36d314	414	struct ide_hw hw, *hws[] = { &hw };
8a69580e	415	int ret;
1da177e4	416
10bdaaa0	417	base = ecardm_iomap(ec, ECARD_RES_MEMC, 0, 0);
1da177e4 LT	418	if (!base)
	419	return -ENOMEM;
	420
	421	state->irq_port = base;
	422
	423	ec->irqaddr = base + ICS_ARCIN_V5_INTRSTAT;
	424	ec->irqmask = 1;
c7b87f3d RK	425
c7b87f3d RK	426	ecard_setirq(ec, &icside_ops_arcin_v5, state);
1da177e4 LT	427
	428	/*
	429	* Be on the safe side - disable interrupts
	430	*/
	431	icside_irqdisable_arcin_v5(ec, 0);
	432
b25afdf1 BZ	433	icside_setup_ports(&hw, base, &icside_cardinfo_v5, ec);
b25afdf1 BZ	434
dca39830	435	host = ide_host_alloc(&icside_v5_port_info, hws, 1);
48c3c107	436	if (host == NULL)
1da177e4	437	return -ENODEV;
1da177e4	438
48c3c107	439	state->host = host;
1da177e4	440
26839f09 BZ	441	ecard_set_drvdata(ec, state);
26839f09 BZ	442
33050ec7	443	ret = ide_host_register(host, &icside_v5_port_info, hws);
8a69580e BZ	444	if (ret)
8a69580e BZ	445	goto err_free;
1da177e4 LT	446
1da177e4 LT	447	return 0;
8a69580e BZ	448	err_free:
	449	ide_host_free(host);
	450	ecard_set_drvdata(ec, NULL);
	451	return ret;
1da177e4 LT	452	}
1da177e4 LT	453
e6b53703	454	static const struct ide_port_info icside_v6_port_info __initconst = {
91432f48	455	.init_dma = icside_dma_off_init,
f75d4a23	456	.port_ops = &icside_v6_no_dma_port_ops,
c5dd43ec	457	.host_flags = IDE_HFLAG_SERIALIZE \| IDE_HFLAG_MMIO,
c413b9b9 BZ	458	.mwdma_mask = ATA_MWDMA2,
c413b9b9 BZ	459	.swdma_mask = ATA_SWDMA2,
29e52cf7	460	.chipset = ide_acorn,
c413b9b9 BZ	461	};
c413b9b9 BZ	462
fe31edc8 GKH	463	static int icside_register_v6(struct icside_state *state,
fe31edc8 GKH	464	struct expansion_card *ec)
1da177e4	465	{
1da177e4	466	void __iomem ioc_base, easi_base;
48c3c107	467	struct ide_host *host;
1da177e4 LT	468	unsigned int sel = 0;
1da177e4 LT	469	int ret;
9f36d314	470	struct ide_hw hw[2], *hws[] = { &hw[0], &hw[1] };
c413b9b9	471	struct ide_port_info d = icside_v6_port_info;
1da177e4	472
10bdaaa0	473	ioc_base = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
1da177e4 LT	474	if (!ioc_base) {
	475	ret = -ENOMEM;
	476	goto out;
	477	}
	478
	479	easi_base = ioc_base;
	480
	481	if (ecard_resource_flags(ec, ECARD_RES_EASI)) {
10bdaaa0	482	easi_base = ecardm_iomap(ec, ECARD_RES_EASI, 0, 0);
1da177e4 LT	483	if (!easi_base) {
1da177e4 LT	484	ret = -ENOMEM;
10bdaaa0	485	goto out;
1da177e4 LT	486	}
	487
	488	/*
	489	* Enable access to the EASI region.
	490	*/
	491	sel = 1 << 5;
	492	}
	493
	494	writeb(sel, ioc_base);
	495
c7b87f3d	496	ecard_setirq(ec, &icside_ops_arcin_v6, state);
1da177e4 LT	497
	498	state->irq_port = easi_base;
	499	state->ioc_base = ioc_base;
26839f09	500	state->sel = sel;
1da177e4 LT	501
	502	/*
	503	* Be on the safe side - disable interrupts
	504	*/
	505	icside_irqdisable_arcin_v6(ec, 0);
	506
b25afdf1 BZ	507	icside_setup_ports(&hw[0], easi_base, &icside_cardinfo_v6_1, ec);
	508	icside_setup_ports(&hw[1], easi_base, &icside_cardinfo_v6_2, ec);
	509
dca39830	510	host = ide_host_alloc(&d, hws, 2);
48c3c107	511	if (host == NULL)
b25afdf1	512	return -ENODEV;
1da177e4	513
48c3c107	514	state->host = host;
1da177e4	515
26839f09	516	ecard_set_drvdata(ec, state);
1da177e4	517
32a527ad	518	#ifdef CONFIG_BLK_DEV_IDEDMA_ICS
67717e22	519	if (ec->dma != NO_DMA && !request_dma(ec->dma, DRV_NAME)) {
91432f48	520	d.init_dma = icside_dma_init;
9c391bae	521	d.port_ops = &icside_v6_port_ops;
32a527ad CD	522	d.dma_ops = &icside_v6_dma_ops;
	523	}
	524	#endif
1da177e4	525
d224b626	526	ret = ide_host_register(host, &d, hws);
8a69580e BZ	527	if (ret)
8a69580e BZ	528	goto err_free;
1da177e4 LT	529
1da177e4 LT	530	return 0;
8a69580e BZ	531	err_free:
	532	ide_host_free(host);
	533	if (d.dma_ops)
	534	free_dma(ec->dma);
	535	ecard_set_drvdata(ec, NULL);
	536	out:
1da177e4 LT	537	return ret;
	538	}
	539
fe31edc8	540	static int icside_probe(struct expansion_card ec, const struct ecard_id id)
1da177e4 LT	541	{
	542	struct icside_state *state;
	543	void __iomem *idmem;
	544	int ret;
	545
	546	ret = ecard_request_resources(ec);
	547	if (ret)
	548	goto out;
	549
cc60d8ba	550	state = kzalloc(sizeof(struct icside_state), GFP_KERNEL);
1da177e4 LT	551	if (!state) {
	552	ret = -ENOMEM;
	553	goto release;
	554	}
	555
1da177e4	556	state->type = ICS_TYPE_NOTYPE;
1da177e4	557
10bdaaa0	558	idmem = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
1da177e4 LT	559	if (idmem) {
	560	unsigned int type;
	561
	562	type = readb(idmem + ICS_IDENT_OFFSET) & 1;
	563	type \|= (readb(idmem + ICS_IDENT_OFFSET + 4) & 1) << 1;
	564	type \|= (readb(idmem + ICS_IDENT_OFFSET + 8) & 1) << 2;
	565	type \|= (readb(idmem + ICS_IDENT_OFFSET + 12) & 1) << 3;
10bdaaa0	566	ecardm_iounmap(ec, idmem);
1da177e4 LT	567
	568	state->type = type;
	569	}
	570
	571	switch (state->type) {
	572	case ICS_TYPE_A3IN:
	573	dev_warn(&ec->dev, "A3IN unsupported\n");
	574	ret = -ENODEV;
	575	break;
	576
	577	case ICS_TYPE_A3USER:
	578	dev_warn(&ec->dev, "A3USER unsupported\n");
	579	ret = -ENODEV;
	580	break;
	581
	582	case ICS_TYPE_V5:
	583	ret = icside_register_v5(state, ec);
	584	break;
	585
	586	case ICS_TYPE_V6:
	587	ret = icside_register_v6(state, ec);
	588	break;
	589
	590	default:
	591	dev_warn(&ec->dev, "unknown interface type\n");
	592	ret = -ENODEV;
	593	break;
	594	}
	595
26839f09	596	if (ret == 0)
1da177e4	597	goto out;
1da177e4 LT	598
	599	kfree(state);
	600	release:
	601	ecard_release_resources(ec);
	602	out:
	603	return ret;
	604	}
	605
fe31edc8	606	static void icside_remove(struct expansion_card *ec)
1da177e4 LT	607	{
	608	struct icside_state *state = ecard_get_drvdata(ec);
	609
	610	switch (state->type) {
	611	case ICS_TYPE_V5:
	612	/* FIXME: tell IDE to stop using the interface */
	613
	614	/* Disable interrupts */
	615	icside_irqdisable_arcin_v5(ec, 0);
	616	break;
	617
	618	case ICS_TYPE_V6:
	619	/* FIXME: tell IDE to stop using the interface */
	620	if (ec->dma != NO_DMA)
	621	free_dma(ec->dma);
	622
	623	/* Disable interrupts */
	624	icside_irqdisable_arcin_v6(ec, 0);
	625
	626	/* Reset the ROM pointer/EASI selection */
	627	writeb(0, state->ioc_base);
	628	break;
	629	}
	630
	631	ecard_set_drvdata(ec, NULL);
1da177e4	632
1da177e4 LT	633	kfree(state);
	634	ecard_release_resources(ec);
	635	}
	636
	637	static void icside_shutdown(struct expansion_card *ec)
	638	{
	639	struct icside_state *state = ecard_get_drvdata(ec);
	640	unsigned long flags;
	641
	642	/*
	643	* Disable interrupts from this card. We need to do
	644	* this before disabling EASI since we may be accessing
	645	* this register via that region.
	646	*/
	647	local_irq_save(flags);
	648	ec->ops->irqdisable(ec, 0);
	649	local_irq_restore(flags);
	650
	651	/*
	652	* Reset the ROM pointer so that we can read the ROM
	653	* after a soft reboot. This also disables access to
	654	* the IDE taskfile via the EASI region.
	655	*/
	656	if (state->ioc_base)
	657	writeb(0, state->ioc_base);
	658	}
	659
	660	static const struct ecard_id icside_ids[] = {
	661	{ MANU_ICS, PROD_ICS_IDE },
	662	{ MANU_ICS2, PROD_ICS2_IDE },
	663	{ 0xffff, 0xffff }
	664	};
	665
	666	static struct ecard_driver icside_driver = {
	667	.probe = icside_probe,
fe31edc8	668	.remove = icside_remove,
1da177e4 LT	669	.shutdown = icside_shutdown,
	670	.id_table = icside_ids,
	671	.drv = {
	672	.name = "icside",
	673	},
	674	};
	675
	676	static int __init icside_init(void)
	677	{
	678	return ecard_register_driver(&icside_driver);
	679	}
	680
1137fb67	681	static void __exit icside_exit(void)
8e27cb11	682	{
1137fb67	683	ecard_remove_driver(&icside_driver);
8e27cb11 BZ	684	}
8e27cb11 BZ	685
1da177e4 LT	686	MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>");
	687	MODULE_LICENSE("GPL");
	688	MODULE_DESCRIPTION("ICS IDE driver");
	689
	690	module_init(icside_init);
8e27cb11	691	module_exit(icside_exit);