[linux-2.6-block.git] / drivers / pcmcia / vrc4171_card.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * vrc4171_card.c, NEC VRC4171 Card Controller driver for Socket Services.
 *
 * Copyright (C) 2003-2005  Yoichi Yuasa <yuasa@linux-mips.org>
 */
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/spinlock.h>
#include <linux/types.h>
#include <linux/platform_device.h>

#include <asm/io.h>

#include <pcmcia/ss.h>

#include "i82365.h"

MODULE_DESCRIPTION("NEC VRC4171 Card Controllers driver for Socket Services");
MODULE_AUTHOR("Yoichi Yuasa <yuasa@linux-mips.org>");
MODULE_LICENSE("GPL");

#define CARD_MAX_SLOTS		2
#define CARD_SLOTA		0
#define CARD_SLOTB		1
#define CARD_SLOTB_OFFSET	0x40

#define CARD_MEM_START		0x10000000
#define CARD_MEM_END		0x13ffffff
#define CARD_MAX_MEM_OFFSET	0x3ffffff
#define CARD_MAX_MEM_SPEED	1000

#define CARD_CONTROLLER_INDEX	0x03e0
#define CARD_CONTROLLER_DATA	0x03e1
 /* Power register */
  #define VPP_GET_VCC		0x01
  #define POWER_ENABLE		0x10
 #define CARD_VOLTAGE_SENSE	0x1f
  #define VCC_3VORXV_CAPABLE	0x00
  #define VCC_XV_ONLY		0x01
  #define VCC_3V_CAPABLE	0x02
  #define VCC_5V_ONLY		0x03
 #define CARD_VOLTAGE_SELECT	0x2f
  #define VCC_3V		0x01
  #define VCC_5V		0x00
  #define VCC_XV		0x02
  #define VCC_STATUS_3V		0x02
  #define VCC_STATUS_5V		0x01
  #define VCC_STATUS_XV		0x03
 #define GLOBAL_CONTROL		0x1e
  #define EXWRBK		0x04
  #define IRQPM_EN		0x08
  #define CLRPMIRQ		0x10

#define INTERRUPT_STATUS	0x05fa
 #define IRQ_A			0x02
 #define IRQ_B			0x04

#define CONFIGURATION1		0x05fe
 #define SLOTB_CONFIG		0xc000
 #define SLOTB_NONE		0x0000
 #define SLOTB_PCCARD		0x4000
 #define SLOTB_CF		0x8000
 #define SLOTB_FLASHROM		0xc000

#define CARD_CONTROLLER_START	CARD_CONTROLLER_INDEX
#define CARD_CONTROLLER_END	CARD_CONTROLLER_DATA

#define IO_MAX_MAPS	2
#define MEM_MAX_MAPS	5

enum vrc4171_slot {
	SLOT_PROBE = 0,
	SLOT_NOPROBE_IO,
	SLOT_NOPROBE_MEM,
	SLOT_NOPROBE_ALL,
	SLOT_INITIALIZED,
};

enum vrc4171_slotb {
	SLOTB_IS_NONE,
	SLOTB_IS_PCCARD,
	SLOTB_IS_CF,
	SLOTB_IS_FLASHROM,
};

struct vrc4171_socket {
	enum vrc4171_slot slot;
	struct pcmcia_socket pcmcia_socket;
	char name[24];
	int csc_irq;
	int io_irq;
	spinlock_t lock;
};

static struct vrc4171_socket vrc4171_sockets[CARD_MAX_SLOTS];
static enum vrc4171_slotb vrc4171_slotb = SLOTB_IS_NONE;
static char vrc4171_card_name[] = "NEC VRC4171 Card Controller";
static unsigned int vrc4171_irq;
static uint16_t vrc4171_irq_mask = 0xdeb8;

static struct resource vrc4171_card_resource[3] = {
	{	.name		= vrc4171_card_name,
		.start		= CARD_CONTROLLER_START,
		.end		= CARD_CONTROLLER_END,
		.flags		= IORESOURCE_IO,	},
	{	.name		= vrc4171_card_name,
		.start		= INTERRUPT_STATUS,
		.end		= INTERRUPT_STATUS,
		.flags		= IORESOURCE_IO,	},
	{	.name		= vrc4171_card_name,
		.start		= CONFIGURATION1,
		.end		= CONFIGURATION1,
		.flags		= IORESOURCE_IO,	},
};

static struct platform_device vrc4171_card_device = {
	.name		= vrc4171_card_name,
	.id		= 0,
	.num_resources	= 3,
	.resource	= vrc4171_card_resource,
};

static inline uint16_t vrc4171_get_irq_status(void)
{
	return inw(INTERRUPT_STATUS);
}

static inline void vrc4171_set_multifunction_pin(enum vrc4171_slotb config)
{
	uint16_t config1;

	config1 = inw(CONFIGURATION1);
	config1 &= ~SLOTB_CONFIG;

	switch (config) {
	case SLOTB_IS_NONE:
		config1 |= SLOTB_NONE;
		break;
	case SLOTB_IS_PCCARD:
		config1 |= SLOTB_PCCARD;
		break;
	case SLOTB_IS_CF:
		config1 |= SLOTB_CF;
		break;
	case SLOTB_IS_FLASHROM:
		config1 |= SLOTB_FLASHROM;
		break;
	default:
		break;
	}

	outw(config1, CONFIGURATION1);
}

static inline uint8_t exca_read_byte(int slot, uint8_t index)
{
	if (slot == CARD_SLOTB)
		index += CARD_SLOTB_OFFSET;

	outb(index, CARD_CONTROLLER_INDEX);
	return inb(CARD_CONTROLLER_DATA);
}

static inline uint16_t exca_read_word(int slot, uint8_t index)
{
	uint16_t data;

	if (slot == CARD_SLOTB)
		index += CARD_SLOTB_OFFSET;

	outb(index++, CARD_CONTROLLER_INDEX);
	data = inb(CARD_CONTROLLER_DATA);

	outb(index, CARD_CONTROLLER_INDEX);
	data |= ((uint16_t)inb(CARD_CONTROLLER_DATA)) << 8;

	return data;
}

static inline uint8_t exca_write_byte(int slot, uint8_t index, uint8_t data)
{
	if (slot == CARD_SLOTB)
		index += CARD_SLOTB_OFFSET;

	outb(index, CARD_CONTROLLER_INDEX);
	outb(data, CARD_CONTROLLER_DATA);

	return data;
}

static inline uint16_t exca_write_word(int slot, uint8_t index, uint16_t data)
{
	if (slot == CARD_SLOTB)
		index += CARD_SLOTB_OFFSET;

	outb(index++, CARD_CONTROLLER_INDEX);
	outb(data, CARD_CONTROLLER_DATA);

	outb(index, CARD_CONTROLLER_INDEX);
	outb((uint8_t)(data >> 8), CARD_CONTROLLER_DATA);

	return data;
}

static inline int search_nonuse_irq(void)
{
	int i;

	for (i = 0; i < 16; i++) {
		if (vrc4171_irq_mask & (1 << i)) {
			vrc4171_irq_mask &= ~(1 << i);
			return i;
		}
	}

	return -1;
}

static int pccard_init(struct pcmcia_socket *sock)
{
	struct vrc4171_socket *socket;
	unsigned int slot;

	sock->features |= SS_CAP_PCCARD | SS_CAP_PAGE_REGS;
	sock->irq_mask = 0;
	sock->map_size = 0x1000;
	sock->pci_irq = vrc4171_irq;

	slot = sock->sock;
	socket = &vrc4171_sockets[slot];
	socket->csc_irq = search_nonuse_irq();
	socket->io_irq = search_nonuse_irq();
	spin_lock_init(&socket->lock);

	return 0;
}

static int pccard_get_status(struct pcmcia_socket *sock, u_int *value)
{
	unsigned int slot;
	uint8_t status, sense;
	u_int val = 0;

	if (sock == NULL || sock->sock >= CARD_MAX_SLOTS || value == NULL)
		return -EINVAL;

	slot = sock->sock;

	status = exca_read_byte(slot, I365_STATUS);
	if (exca_read_byte(slot, I365_INTCTL) & I365_PC_IOCARD) {
		if (status & I365_CS_STSCHG)
			val |= SS_STSCHG;
	} else {
		if (!(status & I365_CS_BVD1))
			val |= SS_BATDEAD;
		else if ((status & (I365_CS_BVD1 | I365_CS_BVD2)) == I365_CS_BVD1)
			val |= SS_BATWARN;
	}
	if ((status & I365_CS_DETECT) == I365_CS_DETECT)
		val |= SS_DETECT;
	if (status & I365_CS_WRPROT)
		val |= SS_WRPROT;
	if (status & I365_CS_READY)
		val |= SS_READY;
	if (status & I365_CS_POWERON)
		val |= SS_POWERON;

	sense = exca_read_byte(slot, CARD_VOLTAGE_SENSE);
	switch (sense) {
	case VCC_3VORXV_CAPABLE:
		val |= SS_3VCARD | SS_XVCARD;
		break;
	case VCC_XV_ONLY:
		val |= SS_XVCARD;
		break;
	case VCC_3V_CAPABLE:
		val |= SS_3VCARD;
		break;
	default:
		/* 5V only */
		break;
	}

	*value = val;

	return 0;
}

static inline uint8_t set_Vcc_value(u_char Vcc)
{
	switch (Vcc) {
	case 33:
		return VCC_3V;
	case 50:
		return VCC_5V;
	}

	/* Small voltage is chosen for safety. */
	return VCC_3V;
}

static int pccard_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
{
	struct vrc4171_socket *socket;
	unsigned int slot;
	uint8_t voltage, power, control, cscint;

	if (sock == NULL || sock->sock >= CARD_MAX_SLOTS ||
	    (state->Vpp != state->Vcc && state->Vpp != 0) ||
	    (state->Vcc != 50 && state->Vcc != 33 && state->Vcc != 0))
		return -EINVAL;

	slot = sock->sock;
	socket = &vrc4171_sockets[slot];

	spin_lock_irq(&socket->lock);

	voltage = set_Vcc_value(state->Vcc);
	exca_write_byte(slot, CARD_VOLTAGE_SELECT, voltage);

	power = POWER_ENABLE;
	if (state->Vpp == state->Vcc)
		power |= VPP_GET_VCC;
	if (state->flags & SS_OUTPUT_ENA)
		power |= I365_PWR_OUT;
	exca_write_byte(slot, I365_POWER, power);

	control = 0;
	if (state->io_irq != 0)
		control |= socket->io_irq;
	if (state->flags & SS_IOCARD)
		control |= I365_PC_IOCARD;
	if (state->flags & SS_RESET)
		control	&= ~I365_PC_RESET;
	else
		control |= I365_PC_RESET;
	exca_write_byte(slot, I365_INTCTL, control);

        cscint = 0;
        exca_write_byte(slot, I365_CSCINT, cscint);
	exca_read_byte(slot, I365_CSC);	/* clear CardStatus change */
	if (state->csc_mask != 0)
		cscint |= socket->csc_irq << 8;
	if (state->flags & SS_IOCARD) {
		if (state->csc_mask & SS_STSCHG)
			cscint |= I365_CSC_STSCHG;
	} else {
		if (state->csc_mask & SS_BATDEAD)
			cscint |= I365_CSC_BVD1;
		if (state->csc_mask & SS_BATWARN)
			cscint |= I365_CSC_BVD2;
	}
	if (state->csc_mask & SS_READY)
		cscint |= I365_CSC_READY;
	if (state->csc_mask & SS_DETECT)
		cscint |= I365_CSC_DETECT;
        exca_write_byte(slot, I365_CSCINT, cscint);

	spin_unlock_irq(&socket->lock);

	return 0;
}

static int pccard_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
{
	unsigned int slot;
	uint8_t ioctl, addrwin;
	u_char map;

	if (sock == NULL || sock->sock >= CARD_MAX_SLOTS ||
	    io == NULL || io->map >= IO_MAX_MAPS ||
	    io->start > 0xffff || io->stop > 0xffff || io->start > io->stop)
		return -EINVAL;

	slot = sock->sock;
	map = io->map;

	addrwin = exca_read_byte(slot, I365_ADDRWIN);
	if (addrwin & I365_ENA_IO(map)) {
		addrwin &= ~I365_ENA_IO(map);
		exca_write_byte(slot, I365_ADDRWIN, addrwin);
	}

	exca_write_word(slot, I365_IO(map)+I365_W_START, io->start);
	exca_write_word(slot, I365_IO(map)+I365_W_STOP, io->stop);

	ioctl = 0;
	if (io->speed > 0)
		ioctl |= I365_IOCTL_WAIT(map);
	if (io->flags & MAP_16BIT)
		ioctl |= I365_IOCTL_16BIT(map);
	if (io->flags & MAP_AUTOSZ)
		ioctl |= I365_IOCTL_IOCS16(map);
	if (io->flags & MAP_0WS)
		ioctl |= I365_IOCTL_0WS(map);
	exca_write_byte(slot, I365_IOCTL, ioctl);

	if (io->flags & MAP_ACTIVE) {
		addrwin |= I365_ENA_IO(map);
		exca_write_byte(slot, I365_ADDRWIN, addrwin);
	}

	return 0;
}

static int pccard_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem)
{
	unsigned int slot;
	uint16_t start, stop, offset;
	uint8_t addrwin;
	u_char map;

	if (sock == NULL || sock->sock >= CARD_MAX_SLOTS ||
	    mem == NULL || mem->map >= MEM_MAX_MAPS ||
	    mem->res->start < CARD_MEM_START || mem->res->start > CARD_MEM_END ||
	    mem->res->end < CARD_MEM_START || mem->res->end > CARD_MEM_END ||
	    mem->res->start > mem->res->end ||
	    mem->card_start > CARD_MAX_MEM_OFFSET ||
	    mem->speed > CARD_MAX_MEM_SPEED)
		return -EINVAL;

	slot = sock->sock;
	map = mem->map;

	addrwin = exca_read_byte(slot, I365_ADDRWIN);
	if (addrwin & I365_ENA_MEM(map)) {
		addrwin &= ~I365_ENA_MEM(map);
		exca_write_byte(slot, I365_ADDRWIN, addrwin);
	}

	start = (mem->res->start >> 12) & 0x3fff;
	if (mem->flags & MAP_16BIT)
		start |= I365_MEM_16BIT;
	exca_write_word(slot, I365_MEM(map)+I365_W_START, start);

	stop = (mem->res->end >> 12) & 0x3fff;
	switch (mem->speed) {
	case 0:
		break;
	case 1:
		stop |= I365_MEM_WS0;
		break;
	case 2:
		stop |= I365_MEM_WS1;
		break;
	default:
		stop |= I365_MEM_WS0 | I365_MEM_WS1;
		break;
	}
	exca_write_word(slot, I365_MEM(map)+I365_W_STOP, stop);

	offset = (mem->card_start >> 12) & 0x3fff;
	if (mem->flags & MAP_ATTRIB)
		offset |= I365_MEM_REG;
	if (mem->flags & MAP_WRPROT)
		offset |= I365_MEM_WRPROT;
	exca_write_word(slot, I365_MEM(map)+I365_W_OFF, offset);

	if (mem->flags & MAP_ACTIVE) {
		addrwin |= I365_ENA_MEM(map);
		exca_write_byte(slot, I365_ADDRWIN, addrwin);
	}

	return 0;
}

static struct pccard_operations vrc4171_pccard_operations = {
	.init			= pccard_init,
	.get_status		= pccard_get_status,
	.set_socket		= pccard_set_socket,
	.set_io_map		= pccard_set_io_map,
	.set_mem_map		= pccard_set_mem_map,
};

static inline unsigned int get_events(int slot)
{
	unsigned int events = 0;
	uint8_t status, csc;

	status = exca_read_byte(slot, I365_STATUS);
	csc = exca_read_byte(slot, I365_CSC);

	if (exca_read_byte(slot, I365_INTCTL) & I365_PC_IOCARD) {
		if ((csc & I365_CSC_STSCHG) && (status & I365_CS_STSCHG))
			events |= SS_STSCHG;
	} else {
		if (csc & (I365_CSC_BVD1 | I365_CSC_BVD2)) {
			if (!(status & I365_CS_BVD1))
				events |= SS_BATDEAD;
			else if ((status & (I365_CS_BVD1 | I365_CS_BVD2)) == I365_CS_BVD1)
				events |= SS_BATWARN;
		}
	}
	if ((csc & I365_CSC_READY) && (status & I365_CS_READY))
		events |= SS_READY;
	if ((csc & I365_CSC_DETECT) && ((status & I365_CS_DETECT) == I365_CS_DETECT))
		events |= SS_DETECT;

	return events;
}

static irqreturn_t pccard_interrupt(int irq, void *dev_id)
{
	struct vrc4171_socket *socket;
	unsigned int events;
	irqreturn_t retval = IRQ_NONE;
	uint16_t status;

	status = vrc4171_get_irq_status();
	if (status & IRQ_A) {
		socket = &vrc4171_sockets[CARD_SLOTA];
		if (socket->slot == SLOT_INITIALIZED) {
			if (status & (1 << socket->csc_irq)) {
				events = get_events(CARD_SLOTA);
				if (events != 0) {
					pcmcia_parse_events(&socket->pcmcia_socket, events);
					retval = IRQ_HANDLED;
				}
			}
		}
	}

	if (status & IRQ_B) {
		socket = &vrc4171_sockets[CARD_SLOTB];
		if (socket->slot == SLOT_INITIALIZED) {
			if (status & (1 << socket->csc_irq)) {
				events = get_events(CARD_SLOTB);
				if (events != 0) {
					pcmcia_parse_events(&socket->pcmcia_socket, events);
					retval = IRQ_HANDLED;
				}
			}
		}
	}

	return retval;
}

static inline void reserve_using_irq(int slot)
{
	unsigned int irq;

	irq = exca_read_byte(slot, I365_INTCTL);
	irq &= 0x0f;
	vrc4171_irq_mask &= ~(1 << irq);

	irq = exca_read_byte(slot, I365_CSCINT);
	irq = (irq & 0xf0) >> 4;
	vrc4171_irq_mask &= ~(1 << irq);
}

static int vrc4171_add_sockets(void)
{
	struct vrc4171_socket *socket;
	int slot, retval;

	for (slot = 0; slot < CARD_MAX_SLOTS; slot++) {
		if (slot == CARD_SLOTB && vrc4171_slotb == SLOTB_IS_NONE)
			continue;

		socket = &vrc4171_sockets[slot];
		if (socket->slot != SLOT_PROBE) {
			uint8_t addrwin;

			switch (socket->slot) {
			case SLOT_NOPROBE_MEM:
				addrwin = exca_read_byte(slot, I365_ADDRWIN);
				addrwin &= 0x1f;
				exca_write_byte(slot, I365_ADDRWIN, addrwin);
				break;
			case SLOT_NOPROBE_IO:
				addrwin = exca_read_byte(slot, I365_ADDRWIN);
				addrwin &= 0xc0;
				exca_write_byte(slot, I365_ADDRWIN, addrwin);
				break;
			default:
				break;
			}

			reserve_using_irq(slot);
			continue;
		}

		sprintf(socket->name, "NEC VRC4171 Card Slot %1c", 'A' + slot);
		socket->pcmcia_socket.dev.parent = &vrc4171_card_device.dev;
		socket->pcmcia_socket.ops = &vrc4171_pccard_operations;
		socket->pcmcia_socket.owner = THIS_MODULE;

		retval = pcmcia_register_socket(&socket->pcmcia_socket);
		if (retval < 0)
			return retval;

		exca_write_byte(slot, I365_ADDRWIN, 0);
		exca_write_byte(slot, GLOBAL_CONTROL, 0);

		socket->slot = SLOT_INITIALIZED;
	}

	return 0;
}

static void vrc4171_remove_sockets(void)
{
	struct vrc4171_socket *socket;
	int slot;

	for (slot = 0; slot < CARD_MAX_SLOTS; slot++) {
		if (slot == CARD_SLOTB && vrc4171_slotb == SLOTB_IS_NONE)
			continue;

		socket = &vrc4171_sockets[slot];
		if (socket->slot == SLOT_INITIALIZED)
			pcmcia_unregister_socket(&socket->pcmcia_socket);

		socket->slot = SLOT_PROBE;
	}
}

static int vrc4171_card_setup(char *options)
{
	if (options == NULL || *options == '\0')
		return 1;

	if (strncmp(options, "irq:", 4) == 0) {
		int irq;
		options += 4;
		irq = simple_strtoul(options, &options, 0);
		if (irq >= 0 && irq < nr_irqs)
			vrc4171_irq = irq;

		if (*options != ',')
			return 1;
		options++;
	}

	if (strncmp(options, "slota:", 6) == 0) {
		options += 6;
		if (*options != '\0') {
			if (strncmp(options, "memnoprobe", 10) == 0) {
				vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_MEM;
				options += 10;
			} else if (strncmp(options, "ionoprobe", 9) == 0) {
				vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_IO;
				options += 9;
			} else if ( strncmp(options, "noprobe", 7) == 0) {
				vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_ALL;
				options += 7;
			}

			if (*options != ',')
				return 1;
			options++;
		} else
			return 1;

	}

	if (strncmp(options, "slotb:", 6) == 0) {
		options += 6;
		if (*options != '\0') {
			if (strncmp(options, "pccard", 6) == 0) {
				vrc4171_slotb = SLOTB_IS_PCCARD;
				options += 6;
			} else if (strncmp(options, "cf", 2) == 0) {
				vrc4171_slotb = SLOTB_IS_CF;
				options += 2;
			} else if (strncmp(options, "flashrom", 8) == 0) {
				vrc4171_slotb = SLOTB_IS_FLASHROM;
				options += 8;
			} else if (strncmp(options, "none", 4) == 0) {
				vrc4171_slotb = SLOTB_IS_NONE;
				options += 4;
			}

			if (*options != ',')
				return 1;
			options++;

			if (strncmp(options, "memnoprobe", 10) == 0)
				vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_MEM;
			if (strncmp(options, "ionoprobe", 9) == 0)
				vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_IO;
			if (strncmp(options, "noprobe", 7) == 0)
				vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_ALL;
		}
	}

	return 1;
}

__setup("vrc4171_card=", vrc4171_card_setup);

static struct platform_driver vrc4171_card_driver = {
	.driver = {
		.name		= vrc4171_card_name,
	},
};

static int vrc4171_card_init(void)
{
	int retval;

	retval = platform_driver_register(&vrc4171_card_driver);
	if (retval < 0)
		return retval;

	retval = platform_device_register(&vrc4171_card_device);
	if (retval < 0) {
		platform_driver_unregister(&vrc4171_card_driver);
		return retval;
	}

	vrc4171_set_multifunction_pin(vrc4171_slotb);

	retval = vrc4171_add_sockets();
	if (retval == 0)
		retval = request_irq(vrc4171_irq, pccard_interrupt, IRQF_SHARED,
		                     vrc4171_card_name, vrc4171_sockets);

	if (retval < 0) {
		vrc4171_remove_sockets();
		platform_device_unregister(&vrc4171_card_device);
		platform_driver_unregister(&vrc4171_card_driver);
		return retval;
	}

	printk(KERN_INFO "%s, connected to IRQ %d\n",
		vrc4171_card_driver.driver.name, vrc4171_irq);

	return 0;
}

static void vrc4171_card_exit(void)
{
	free_irq(vrc4171_irq, vrc4171_sockets);
	vrc4171_remove_sockets();
	platform_device_unregister(&vrc4171_card_device);
	platform_driver_unregister(&vrc4171_card_driver);
}

module_init(vrc4171_card_init);
module_exit(vrc4171_card_exit);
Commit	Line	Data
1a59d1b8	1	// SPDX-License-Identifier: GPL-2.0-or-later
1da177e4 LT	2	/*
	3	* vrc4171_card.c, NEC VRC4171 Card Controller driver for Socket Services.
	4	*
ada8e951	5	* Copyright (C) 2003-2005 Yoichi Yuasa <yuasa@linux-mips.org>
1da177e4 LT	6	*/
	7	#include <linux/init.h>
	8	#include <linux/ioport.h>
	9	#include <linux/interrupt.h>
	10	#include <linux/module.h>
	11	#include <linux/spinlock.h>
1da177e4	12	#include <linux/types.h>
d052d1be	13	#include <linux/platform_device.h>
1da177e4 LT	14
	15	#include <asm/io.h>
	16
	17	#include <pcmcia/ss.h>
	18
	19	#include "i82365.h"
	20
	21	MODULE_DESCRIPTION("NEC VRC4171 Card Controllers driver for Socket Services");
ada8e951	22	MODULE_AUTHOR("Yoichi Yuasa <yuasa@linux-mips.org>");
1da177e4 LT	23	MODULE_LICENSE("GPL");
	24
	25	#define CARD_MAX_SLOTS 2
	26	#define CARD_SLOTA 0
	27	#define CARD_SLOTB 1
	28	#define CARD_SLOTB_OFFSET 0x40
	29
	30	#define CARD_MEM_START 0x10000000
	31	#define CARD_MEM_END 0x13ffffff
	32	#define CARD_MAX_MEM_OFFSET 0x3ffffff
	33	#define CARD_MAX_MEM_SPEED 1000
	34
	35	#define CARD_CONTROLLER_INDEX 0x03e0
	36	#define CARD_CONTROLLER_DATA 0x03e1
	37	/* Power register */
	38	#define VPP_GET_VCC 0x01
	39	#define POWER_ENABLE 0x10
	40	#define CARD_VOLTAGE_SENSE 0x1f
	41	#define VCC_3VORXV_CAPABLE 0x00
	42	#define VCC_XV_ONLY 0x01
	43	#define VCC_3V_CAPABLE 0x02
	44	#define VCC_5V_ONLY 0x03
	45	#define CARD_VOLTAGE_SELECT 0x2f
	46	#define VCC_3V 0x01
	47	#define VCC_5V 0x00
	48	#define VCC_XV 0x02
	49	#define VCC_STATUS_3V 0x02
	50	#define VCC_STATUS_5V 0x01
	51	#define VCC_STATUS_XV 0x03
	52	#define GLOBAL_CONTROL 0x1e
	53	#define EXWRBK 0x04
	54	#define IRQPM_EN 0x08
	55	#define CLRPMIRQ 0x10
	56
	57	#define INTERRUPT_STATUS 0x05fa
	58	#define IRQ_A 0x02
	59	#define IRQ_B 0x04
	60
	61	#define CONFIGURATION1 0x05fe
	62	#define SLOTB_CONFIG 0xc000
	63	#define SLOTB_NONE 0x0000
	64	#define SLOTB_PCCARD 0x4000
	65	#define SLOTB_CF 0x8000
	66	#define SLOTB_FLASHROM 0xc000
	67
	68	#define CARD_CONTROLLER_START CARD_CONTROLLER_INDEX
	69	#define CARD_CONTROLLER_END CARD_CONTROLLER_DATA
	70
	71	#define IO_MAX_MAPS 2
	72	#define MEM_MAX_MAPS 5
	73
3ce3c1c4	74	enum vrc4171_slot {
1da177e4 LT	75	SLOT_PROBE = 0,
	76	SLOT_NOPROBE_IO,
	77	SLOT_NOPROBE_MEM,
	78	SLOT_NOPROBE_ALL,
	79	SLOT_INITIALIZED,
3ce3c1c4	80	};
1da177e4	81
3ce3c1c4	82	enum vrc4171_slotb {
1da177e4 LT	83	SLOTB_IS_NONE,
	84	SLOTB_IS_PCCARD,
	85	SLOTB_IS_CF,
	86	SLOTB_IS_FLASHROM,
3ce3c1c4	87	};
1da177e4	88
3ce3c1c4 HS	89	struct vrc4171_socket {
3ce3c1c4 HS	90	enum vrc4171_slot slot;
1da177e4 LT	91	struct pcmcia_socket pcmcia_socket;
	92	char name[24];
	93	int csc_irq;
	94	int io_irq;
7a410e8d	95	spinlock_t lock;
3ce3c1c4	96	};
1da177e4	97
3ce3c1c4 HS	98	static struct vrc4171_socket vrc4171_sockets[CARD_MAX_SLOTS];
3ce3c1c4 HS	99	static enum vrc4171_slotb vrc4171_slotb = SLOTB_IS_NONE;
1da177e4 LT	100	static char vrc4171_card_name[] = "NEC VRC4171 Card Controller";
	101	static unsigned int vrc4171_irq;
	102	static uint16_t vrc4171_irq_mask = 0xdeb8;
	103
	104	static struct resource vrc4171_card_resource[3] = {
	105	{ .name = vrc4171_card_name,
	106	.start = CARD_CONTROLLER_START,
	107	.end = CARD_CONTROLLER_END,
	108	.flags = IORESOURCE_IO, },
	109	{ .name = vrc4171_card_name,
	110	.start = INTERRUPT_STATUS,
	111	.end = INTERRUPT_STATUS,
	112	.flags = IORESOURCE_IO, },
	113	{ .name = vrc4171_card_name,
	114	.start = CONFIGURATION1,
	115	.end = CONFIGURATION1,
	116	.flags = IORESOURCE_IO, },
	117	};
	118
	119	static struct platform_device vrc4171_card_device = {
	120	.name = vrc4171_card_name,
	121	.id = 0,
	122	.num_resources = 3,
	123	.resource = vrc4171_card_resource,
	124	};
	125
	126	static inline uint16_t vrc4171_get_irq_status(void)
	127	{
	128	return inw(INTERRUPT_STATUS);
	129	}
	130
3ce3c1c4	131	static inline void vrc4171_set_multifunction_pin(enum vrc4171_slotb config)
1da177e4 LT	132	{
	133	uint16_t config1;
	134
	135	config1 = inw(CONFIGURATION1);
	136	config1 &= ~SLOTB_CONFIG;
	137
	138	switch (config) {
	139	case SLOTB_IS_NONE:
	140	config1 \|= SLOTB_NONE;
	141	break;
	142	case SLOTB_IS_PCCARD:
	143	config1 \|= SLOTB_PCCARD;
	144	break;
	145	case SLOTB_IS_CF:
	146	config1 \|= SLOTB_CF;
	147	break;
	148	case SLOTB_IS_FLASHROM:
	149	config1 \|= SLOTB_FLASHROM;
	150	break;
	151	default:
	152	break;
	153	}
	154
	155	outw(config1, CONFIGURATION1);
	156	}
	157
	158	static inline uint8_t exca_read_byte(int slot, uint8_t index)
	159	{
	160	if (slot == CARD_SLOTB)
	161	index += CARD_SLOTB_OFFSET;
	162
	163	outb(index, CARD_CONTROLLER_INDEX);
	164	return inb(CARD_CONTROLLER_DATA);
	165	}
	166
	167	static inline uint16_t exca_read_word(int slot, uint8_t index)
	168	{
	169	uint16_t data;
	170
	171	if (slot == CARD_SLOTB)
	172	index += CARD_SLOTB_OFFSET;
	173
	174	outb(index++, CARD_CONTROLLER_INDEX);
	175	data = inb(CARD_CONTROLLER_DATA);
	176
	177	outb(index, CARD_CONTROLLER_INDEX);
	178	data \|= ((uint16_t)inb(CARD_CONTROLLER_DATA)) << 8;
	179
	180	return data;
	181	}
	182
	183	static inline uint8_t exca_write_byte(int slot, uint8_t index, uint8_t data)
	184	{
	185	if (slot == CARD_SLOTB)
	186	index += CARD_SLOTB_OFFSET;
	187
	188	outb(index, CARD_CONTROLLER_INDEX);
	189	outb(data, CARD_CONTROLLER_DATA);
	190
	191	return data;
	192	}
	193
	194	static inline uint16_t exca_write_word(int slot, uint8_t index, uint16_t data)
	195	{
196	if (slot == CARD_SLOTB)
197	index += CARD_SLOTB_OFFSET;
198
199	outb(index++, CARD_CONTROLLER_INDEX);
200	outb(data, CARD_CONTROLLER_DATA);
201
202	outb(index, CARD_CONTROLLER_INDEX);
203	outb((uint8_t)(data >> 8), CARD_CONTROLLER_DATA);
204
205	return data;
206	}
207
208	static inline int search_nonuse_irq(void)
209	{
210	int i;
211
212	for (i = 0; i < 16; i++) {
213	if (vrc4171_irq_mask & (1 << i)) {
214	vrc4171_irq_mask &= ~(1 << i);
215	return i;
216	}
217	}
218
219	return -1;
220	}
221
222	static int pccard_init(struct pcmcia_socket *sock)
223	{
3ce3c1c4	224	struct vrc4171_socket *socket;
1da177e4 LT	225	unsigned int slot;
	226
	227	sock->features \|= SS_CAP_PCCARD \| SS_CAP_PAGE_REGS;
	228	sock->irq_mask = 0;
	229	sock->map_size = 0x1000;
	230	sock->pci_irq = vrc4171_irq;
	231
	232	slot = sock->sock;
	233	socket = &vrc4171_sockets[slot];
	234	socket->csc_irq = search_nonuse_irq();
	235	socket->io_irq = search_nonuse_irq();
811af972	236	spin_lock_init(&socket->lock);
1da177e4 LT	237
	238	return 0;
	239	}
	240
	241	static int pccard_get_status(struct pcmcia_socket sock, u_int value)
	242	{
	243	unsigned int slot;
	244	uint8_t status, sense;
	245	u_int val = 0;
	246
	247	if (sock == NULL \|\| sock->sock >= CARD_MAX_SLOTS \|\| value == NULL)
	248	return -EINVAL;
	249
	250	slot = sock->sock;
	251
	252	status = exca_read_byte(slot, I365_STATUS);
	253	if (exca_read_byte(slot, I365_INTCTL) & I365_PC_IOCARD) {
	254	if (status & I365_CS_STSCHG)
	255	val \|= SS_STSCHG;
	256	} else {
	257	if (!(status & I365_CS_BVD1))
	258	val \|= SS_BATDEAD;
	259	else if ((status & (I365_CS_BVD1 \| I365_CS_BVD2)) == I365_CS_BVD1)
	260	val \|= SS_BATWARN;
	261	}
	262	if ((status & I365_CS_DETECT) == I365_CS_DETECT)
	263	val \|= SS_DETECT;
	264	if (status & I365_CS_WRPROT)
	265	val \|= SS_WRPROT;
	266	if (status & I365_CS_READY)
	267	val \|= SS_READY;
	268	if (status & I365_CS_POWERON)
	269	val \|= SS_POWERON;
	270
	271	sense = exca_read_byte(slot, CARD_VOLTAGE_SENSE);
	272	switch (sense) {
	273	case VCC_3VORXV_CAPABLE:
	274	val \|= SS_3VCARD \| SS_XVCARD;
	275	break;
	276	case VCC_XV_ONLY:
	277	val \|= SS_XVCARD;
	278	break;
	279	case VCC_3V_CAPABLE:
	280	val \|= SS_3VCARD;
	281	break;
	282	default:
	283	/* 5V only */
	284	break;
	285	}
	286
	287	*value = val;
	288
	289	return 0;
	290	}
	291
1da177e4 LT	292	static inline uint8_t set_Vcc_value(u_char Vcc)
	293	{
	294	switch (Vcc) {
	295	case 33:
	296	return VCC_3V;
	297	case 50:
	298	return VCC_5V;
	299	}
	300
	301	/* Small voltage is chosen for safety. */
	302	return VCC_3V;
	303	}
	304
	305	static int pccard_set_socket(struct pcmcia_socket sock, socket_state_t state)
	306	{
3ce3c1c4	307	struct vrc4171_socket *socket;
1da177e4 LT	308	unsigned int slot;
	309	uint8_t voltage, power, control, cscint;
	310
	311	if (sock == NULL \|\| sock->sock >= CARD_MAX_SLOTS \|\|
	312	(state->Vpp != state->Vcc && state->Vpp != 0) \|\|
	313	(state->Vcc != 50 && state->Vcc != 33 && state->Vcc != 0))
	314	return -EINVAL;
	315
	316	slot = sock->sock;
	317	socket = &vrc4171_sockets[slot];
	318
7a410e8d	319	spin_lock_irq(&socket->lock);
1da177e4 LT	320
	321	voltage = set_Vcc_value(state->Vcc);
	322	exca_write_byte(slot, CARD_VOLTAGE_SELECT, voltage);
	323
	324	power = POWER_ENABLE;
	325	if (state->Vpp == state->Vcc)
	326	power \|= VPP_GET_VCC;
	327	if (state->flags & SS_OUTPUT_ENA)
	328	power \|= I365_PWR_OUT;
	329	exca_write_byte(slot, I365_POWER, power);
	330
	331	control = 0;
	332	if (state->io_irq != 0)
	333	control \|= socket->io_irq;
	334	if (state->flags & SS_IOCARD)
	335	control \|= I365_PC_IOCARD;
	336	if (state->flags & SS_RESET)
	337	control &= ~I365_PC_RESET;
	338	else
	339	control \|= I365_PC_RESET;
	340	exca_write_byte(slot, I365_INTCTL, control);
	341
	342	cscint = 0;
	343	exca_write_byte(slot, I365_CSCINT, cscint);
	344	exca_read_byte(slot, I365_CSC); /* clear CardStatus change */
	345	if (state->csc_mask != 0)
	346	cscint \|= socket->csc_irq << 8;
	347	if (state->flags & SS_IOCARD) {
	348	if (state->csc_mask & SS_STSCHG)
	349	cscint \|= I365_CSC_STSCHG;
	350	} else {
	351	if (state->csc_mask & SS_BATDEAD)
	352	cscint \|= I365_CSC_BVD1;
	353	if (state->csc_mask & SS_BATWARN)
	354	cscint \|= I365_CSC_BVD2;
	355	}
	356	if (state->csc_mask & SS_READY)
	357	cscint \|= I365_CSC_READY;
	358	if (state->csc_mask & SS_DETECT)
	359	cscint \|= I365_CSC_DETECT;
	360	exca_write_byte(slot, I365_CSCINT, cscint);
	361
7a410e8d	362	spin_unlock_irq(&socket->lock);
1da177e4 LT	363
	364	return 0;
	365	}
	366
	367	static int pccard_set_io_map(struct pcmcia_socket sock, struct pccard_io_map io)
	368	{
	369	unsigned int slot;
	370	uint8_t ioctl, addrwin;
	371	u_char map;
	372
	373	if (sock == NULL \|\| sock->sock >= CARD_MAX_SLOTS \|\|
	374	io == NULL \|\| io->map >= IO_MAX_MAPS \|\|
	375	io->start > 0xffff \|\| io->stop > 0xffff \|\| io->start > io->stop)
	376	return -EINVAL;
	377
	378	slot = sock->sock;
	379	map = io->map;
	380
	381	addrwin = exca_read_byte(slot, I365_ADDRWIN);
	382	if (addrwin & I365_ENA_IO(map)) {
	383	addrwin &= ~I365_ENA_IO(map);
	384	exca_write_byte(slot, I365_ADDRWIN, addrwin);
	385	}
	386
	387	exca_write_word(slot, I365_IO(map)+I365_W_START, io->start);
	388	exca_write_word(slot, I365_IO(map)+I365_W_STOP, io->stop);
	389
	390	ioctl = 0;
	391	if (io->speed > 0)
	392	ioctl \|= I365_IOCTL_WAIT(map);
	393	if (io->flags & MAP_16BIT)
	394	ioctl \|= I365_IOCTL_16BIT(map);
	395	if (io->flags & MAP_AUTOSZ)
	396	ioctl \|= I365_IOCTL_IOCS16(map);
	397	if (io->flags & MAP_0WS)
	398	ioctl \|= I365_IOCTL_0WS(map);
	399	exca_write_byte(slot, I365_IOCTL, ioctl);
	400
	401	if (io->flags & MAP_ACTIVE) {
	402	addrwin \|= I365_ENA_IO(map);
	403	exca_write_byte(slot, I365_ADDRWIN, addrwin);
	404	}
	405
	406	return 0;
	407	}
	408
	409	static int pccard_set_mem_map(struct pcmcia_socket sock, struct pccard_mem_map mem)
	410	{
	411	unsigned int slot;
	412	uint16_t start, stop, offset;
	413	uint8_t addrwin;
	414	u_char map;
	415
	416	if (sock == NULL \|\| sock->sock >= CARD_MAX_SLOTS \|\|
	417	mem == NULL \|\| mem->map >= MEM_MAX_MAPS \|\|
	418	mem->res->start < CARD_MEM_START \|\| mem->res->start > CARD_MEM_END \|\|
	419	mem->res->end < CARD_MEM_START \|\| mem->res->end > CARD_MEM_END \|\|
	420	mem->res->start > mem->res->end \|\|
	421	mem->card_start > CARD_MAX_MEM_OFFSET \|\|
	422	mem->speed > CARD_MAX_MEM_SPEED)
	423	return -EINVAL;
	424
	425	slot = sock->sock;
	426	map = mem->map;
427
428	addrwin = exca_read_byte(slot, I365_ADDRWIN);
429	if (addrwin & I365_ENA_MEM(map)) {
430	addrwin &= ~I365_ENA_MEM(map);
431	exca_write_byte(slot, I365_ADDRWIN, addrwin);
432	}
433
434	start = (mem->res->start >> 12) & 0x3fff;
435	if (mem->flags & MAP_16BIT)
436	start \|= I365_MEM_16BIT;
437	exca_write_word(slot, I365_MEM(map)+I365_W_START, start);
438
439	stop = (mem->res->end >> 12) & 0x3fff;
440	switch (mem->speed) {
441	case 0:
442	break;
443	case 1:
444	stop \|= I365_MEM_WS0;
445	break;
446	case 2:
447	stop \|= I365_MEM_WS1;
448	break;
449	default:
450	stop \|= I365_MEM_WS0 \| I365_MEM_WS1;
451	break;
452	}
453	exca_write_word(slot, I365_MEM(map)+I365_W_STOP, stop);
454
455	offset = (mem->card_start >> 12) & 0x3fff;
456	if (mem->flags & MAP_ATTRIB)
457	offset \|= I365_MEM_REG;
458	if (mem->flags & MAP_WRPROT)
459	offset \|= I365_MEM_WRPROT;
460	exca_write_word(slot, I365_MEM(map)+I365_W_OFF, offset);
461
462	if (mem->flags & MAP_ACTIVE) {
463	addrwin \|= I365_ENA_MEM(map);
464	exca_write_byte(slot, I365_ADDRWIN, addrwin);
465	}
466
467	return 0;
468	}
469
470	static struct pccard_operations vrc4171_pccard_operations = {
471	.init = pccard_init,
472	.get_status = pccard_get_status,
1da177e4 LT	473	.set_socket = pccard_set_socket,
	474	.set_io_map = pccard_set_io_map,
	475	.set_mem_map = pccard_set_mem_map,
	476	};
	477
	478	static inline unsigned int get_events(int slot)
	479	{
	480	unsigned int events = 0;
	481	uint8_t status, csc;
	482
	483	status = exca_read_byte(slot, I365_STATUS);
	484	csc = exca_read_byte(slot, I365_CSC);
	485
	486	if (exca_read_byte(slot, I365_INTCTL) & I365_PC_IOCARD) {
	487	if ((csc & I365_CSC_STSCHG) && (status & I365_CS_STSCHG))
	488	events \|= SS_STSCHG;
	489	} else {
	490	if (csc & (I365_CSC_BVD1 \| I365_CSC_BVD2)) {
	491	if (!(status & I365_CS_BVD1))
	492	events \|= SS_BATDEAD;
	493	else if ((status & (I365_CS_BVD1 \| I365_CS_BVD2)) == I365_CS_BVD1)
	494	events \|= SS_BATWARN;
	495	}
	496	}
	497	if ((csc & I365_CSC_READY) && (status & I365_CS_READY))
	498	events \|= SS_READY;
	499	if ((csc & I365_CSC_DETECT) && ((status & I365_CS_DETECT) == I365_CS_DETECT))
	500	events \|= SS_DETECT;
	501
	502	return events;
	503	}
	504
7d12e780	505	static irqreturn_t pccard_interrupt(int irq, void *dev_id)
1da177e4	506	{
3ce3c1c4	507	struct vrc4171_socket *socket;
1da177e4 LT	508	unsigned int events;
	509	irqreturn_t retval = IRQ_NONE;
	510	uint16_t status;
	511
	512	status = vrc4171_get_irq_status();
	513	if (status & IRQ_A) {
	514	socket = &vrc4171_sockets[CARD_SLOTA];
	515	if (socket->slot == SLOT_INITIALIZED) {
	516	if (status & (1 << socket->csc_irq)) {
	517	events = get_events(CARD_SLOTA);
	518	if (events != 0) {
	519	pcmcia_parse_events(&socket->pcmcia_socket, events);
	520	retval = IRQ_HANDLED;
	521	}
	522	}
	523	}
	524	}
	525
	526	if (status & IRQ_B) {
	527	socket = &vrc4171_sockets[CARD_SLOTB];
	528	if (socket->slot == SLOT_INITIALIZED) {
	529	if (status & (1 << socket->csc_irq)) {
	530	events = get_events(CARD_SLOTB);
	531	if (events != 0) {
	532	pcmcia_parse_events(&socket->pcmcia_socket, events);
	533	retval = IRQ_HANDLED;
	534	}
	535	}
	536	}
	537	}
	538
	539	return retval;
	540	}
	541
	542	static inline void reserve_using_irq(int slot)
	543	{
	544	unsigned int irq;
	545
	546	irq = exca_read_byte(slot, I365_INTCTL);
	547	irq &= 0x0f;
	548	vrc4171_irq_mask &= ~(1 << irq);
	549
	550	irq = exca_read_byte(slot, I365_CSCINT);
	551	irq = (irq & 0xf0) >> 4;
	552	vrc4171_irq_mask &= ~(1 << irq);
	553	}
	554
34cdf25a	555	static int vrc4171_add_sockets(void)
1da177e4	556	{
3ce3c1c4	557	struct vrc4171_socket *socket;
1da177e4 LT	558	int slot, retval;
	559
	560	for (slot = 0; slot < CARD_MAX_SLOTS; slot++) {
	561	if (slot == CARD_SLOTB && vrc4171_slotb == SLOTB_IS_NONE)
	562	continue;
	563
	564	socket = &vrc4171_sockets[slot];
	565	if (socket->slot != SLOT_PROBE) {
	566	uint8_t addrwin;
	567
	568	switch (socket->slot) {
	569	case SLOT_NOPROBE_MEM:
	570	addrwin = exca_read_byte(slot, I365_ADDRWIN);
	571	addrwin &= 0x1f;
	572	exca_write_byte(slot, I365_ADDRWIN, addrwin);
	573	break;
	574	case SLOT_NOPROBE_IO:
	575	addrwin = exca_read_byte(slot, I365_ADDRWIN);
	576	addrwin &= 0xc0;
	577	exca_write_byte(slot, I365_ADDRWIN, addrwin);
	578	break;
	579	default:
	580	break;
	581	}
	582
	583	reserve_using_irq(slot);
	584	continue;
	585	}
	586
	587	sprintf(socket->name, "NEC VRC4171 Card Slot %1c", 'A' + slot);
dfe461ae	588	socket->pcmcia_socket.dev.parent = &vrc4171_card_device.dev;
1da177e4 LT	589	socket->pcmcia_socket.ops = &vrc4171_pccard_operations;
	590	socket->pcmcia_socket.owner = THIS_MODULE;
	591
	592	retval = pcmcia_register_socket(&socket->pcmcia_socket);
	593	if (retval < 0)
	594	return retval;
	595
	596	exca_write_byte(slot, I365_ADDRWIN, 0);
	597	exca_write_byte(slot, GLOBAL_CONTROL, 0);
	598
	599	socket->slot = SLOT_INITIALIZED;
	600	}
	601
	602	return 0;
	603	}
	604
	605	static void vrc4171_remove_sockets(void)
	606	{
3ce3c1c4	607	struct vrc4171_socket *socket;
1da177e4 LT	608	int slot;
	609
	610	for (slot = 0; slot < CARD_MAX_SLOTS; slot++) {
	611	if (slot == CARD_SLOTB && vrc4171_slotb == SLOTB_IS_NONE)
	612	continue;
	613
	614	socket = &vrc4171_sockets[slot];
	615	if (socket->slot == SLOT_INITIALIZED)
	616	pcmcia_unregister_socket(&socket->pcmcia_socket);
	617
	618	socket->slot = SLOT_PROBE;
	619	}
	620	}
	621
34cdf25a	622	static int vrc4171_card_setup(char *options)
1da177e4 LT	623	{
1da177e4 LT	624	if (options == NULL \|\| *options == '\0')
9b41046c	625	return 1;
1da177e4 LT	626
	627	if (strncmp(options, "irq:", 4) == 0) {
	628	int irq;
	629	options += 4;
	630	irq = simple_strtoul(options, &options, 0);
9130adda	631	if (irq >= 0 && irq < nr_irqs)
1da177e4 LT	632	vrc4171_irq = irq;
	633
	634	if (*options != ',')
9b41046c	635	return 1;
1da177e4 LT	636	options++;
	637	}
	638
	639	if (strncmp(options, "slota:", 6) == 0) {
	640	options += 6;
	641	if (*options != '\0') {
	642	if (strncmp(options, "memnoprobe", 10) == 0) {
	643	vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_MEM;
	644	options += 10;
	645	} else if (strncmp(options, "ionoprobe", 9) == 0) {
	646	vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_IO;
	647	options += 9;
	648	} else if ( strncmp(options, "noprobe", 7) == 0) {
	649	vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_ALL;
	650	options += 7;
	651	}
	652
	653	if (*options != ',')
9b41046c	654	return 1;
1da177e4 LT	655	options++;
1da177e4 LT	656	} else
9b41046c	657	return 1;
1da177e4 LT	658
	659	}
	660
	661	if (strncmp(options, "slotb:", 6) == 0) {
	662	options += 6;
	663	if (*options != '\0') {
	664	if (strncmp(options, "pccard", 6) == 0) {
	665	vrc4171_slotb = SLOTB_IS_PCCARD;
	666	options += 6;
	667	} else if (strncmp(options, "cf", 2) == 0) {
	668	vrc4171_slotb = SLOTB_IS_CF;
	669	options += 2;
	670	} else if (strncmp(options, "flashrom", 8) == 0) {
	671	vrc4171_slotb = SLOTB_IS_FLASHROM;
	672	options += 8;
	673	} else if (strncmp(options, "none", 4) == 0) {
	674	vrc4171_slotb = SLOTB_IS_NONE;
	675	options += 4;
	676	}
	677
	678	if (*options != ',')
9b41046c	679	return 1;
1da177e4 LT	680	options++;
	681
	682	if (strncmp(options, "memnoprobe", 10) == 0)
	683	vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_MEM;
	684	if (strncmp(options, "ionoprobe", 9) == 0)
	685	vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_IO;
	686	if (strncmp(options, "noprobe", 7) == 0)
	687	vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_ALL;
	688	}
	689	}
	690
9b41046c	691	return 1;
1da177e4 LT	692	}
	693
	694	__setup("vrc4171_card=", vrc4171_card_setup);
	695
7a192ec3 ML	696	static struct platform_driver vrc4171_card_driver = {
	697	.driver = {
	698	.name = vrc4171_card_name,
7a192ec3	699	},
1da177e4 LT	700	};
1da177e4 LT	701
34cdf25a	702	static int vrc4171_card_init(void)
1da177e4 LT	703	{
	704	int retval;
	705
7a192ec3	706	retval = platform_driver_register(&vrc4171_card_driver);
1da177e4 LT	707	if (retval < 0)
	708	return retval;
	709
	710	retval = platform_device_register(&vrc4171_card_device);
	711	if (retval < 0) {
7a192ec3	712	platform_driver_unregister(&vrc4171_card_driver);
1da177e4 LT	713	return retval;
	714	}
	715
	716	vrc4171_set_multifunction_pin(vrc4171_slotb);
	717
	718	retval = vrc4171_add_sockets();
	719	if (retval == 0)
dace1453	720	retval = request_irq(vrc4171_irq, pccard_interrupt, IRQF_SHARED,
1da177e4 LT	721	vrc4171_card_name, vrc4171_sockets);
	722
	723	if (retval < 0) {
	724	vrc4171_remove_sockets();
	725	platform_device_unregister(&vrc4171_card_device);
7a192ec3	726	platform_driver_unregister(&vrc4171_card_driver);
1da177e4 LT	727	return retval;
	728	}
	729
7a192ec3 ML	730	printk(KERN_INFO "%s, connected to IRQ %d\n",
7a192ec3 ML	731	vrc4171_card_driver.driver.name, vrc4171_irq);
1da177e4 LT	732
	733	return 0;
	734	}
	735
e765a02c	736	static void vrc4171_card_exit(void)
1da177e4 LT	737	{
	738	free_irq(vrc4171_irq, vrc4171_sockets);
	739	vrc4171_remove_sockets();
	740	platform_device_unregister(&vrc4171_card_device);
7a192ec3	741	platform_driver_unregister(&vrc4171_card_driver);
1da177e4 LT	742	}
	743
	744	module_init(vrc4171_card_init);
	745	module_exit(vrc4171_card_exit);