[linux.git] / drivers / pcmcia / au1000_generic.c

/*
 *
 * Alchemy Semi Au1000 pcmcia driver
 *
 * Copyright 2001-2003 MontaVista Software Inc.
 * Author: MontaVista Software, Inc.
 *         	[email protected] or [email protected]
 *
 * Copyright 2004 Pete Popov, Embedded Alley Solutions, Inc.
 * Updated the driver to 2.6. Followed the sa11xx API and largely
 * copied many of the hardware independent functions.
 *
 * ########################################################################
 *
 *  This program is free software; you can distribute it and/or modify it
 *  under the terms of the GNU General Public License (Version 2) as
 *  published by the Free Software Foundation.
 *
 *  This program is distributed in the hope it will be useful, but WITHOUT
 *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 *  for more details.
 *
 *  You should have received a copy of the GNU General Public License along
 *  with this program; if not, write to the Free Software Foundation, Inc.,
 *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
 *
 * ########################################################################
 *
 * 
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/cpufreq.h>
#include <linux/ioport.h>
#include <linux/kernel.h>
#include <linux/timer.h>
#include <linux/mm.h>
#include <linux/notifier.h>
#include <linux/interrupt.h>
#include <linux/spinlock.h>
#include <linux/platform_device.h>

#include <asm/io.h>
#include <asm/irq.h>
#include <asm/system.h>

#include <asm/mach-au1x00/au1000.h>
#include "au1000_generic.h"

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Pete Popov <[email protected]>");
MODULE_DESCRIPTION("Linux PCMCIA Card Services: Au1x00 Socket Controller");

#if 0
#define debug(x,args...) printk(KERN_DEBUG "%s: " x, __func__ , ##args)
#else
#define debug(x,args...)
#endif

#define MAP_SIZE 0x100000
extern struct au1000_pcmcia_socket au1000_pcmcia_socket[];
#define PCMCIA_SOCKET(x)	(au1000_pcmcia_socket + (x))
#define to_au1000_socket(x)	container_of(x, struct au1000_pcmcia_socket, socket)

/* Some boards like to support CF cards as IDE root devices, so they
 * grab pcmcia sockets directly.
 */
u32 *pcmcia_base_vaddrs[2];
extern const unsigned long mips_io_port_base;

DECLARE_MUTEX(pcmcia_sockets_lock);

static int (*au1x00_pcmcia_hw_init[])(struct device *dev) = {
	au1x_board_init,
};

static int
au1x00_pcmcia_skt_state(struct au1000_pcmcia_socket *skt)
{
	struct pcmcia_state state;
	unsigned int stat;

	memset(&state, 0, sizeof(struct pcmcia_state));

	skt->ops->socket_state(skt, &state);

	stat = state.detect  ? SS_DETECT : 0;
	stat |= state.ready  ? SS_READY  : 0;
	stat |= state.wrprot ? SS_WRPROT : 0;
	stat |= state.vs_3v  ? SS_3VCARD : 0;
	stat |= state.vs_Xv  ? SS_XVCARD : 0;
	stat |= skt->cs_state.Vcc ? SS_POWERON : 0;

	if (skt->cs_state.flags & SS_IOCARD)
		stat |= state.bvd1 ? SS_STSCHG : 0;
	else {
		if (state.bvd1 == 0)
			stat |= SS_BATDEAD;
		else if (state.bvd2 == 0)
			stat |= SS_BATWARN;
	}
	return stat;
}

/*
 * au100_pcmcia_config_skt
 *
 * Convert PCMCIA socket state to our socket configure structure.
 */
static int
au1x00_pcmcia_config_skt(struct au1000_pcmcia_socket *skt, socket_state_t *state)
{
	int ret;

	ret = skt->ops->configure_socket(skt, state);
	if (ret == 0) {
		skt->cs_state = *state;
	}

	if (ret < 0)
		debug("unable to configure socket %d\n", skt->nr);

	return ret;
}

/* au1x00_pcmcia_sock_init()
 *
 * (Re-)Initialise the socket, turning on status interrupts
 * and PCMCIA bus.  This must wait for power to stabilise
 * so that the card status signals report correctly.
 *
 * Returns: 0
 */
static int au1x00_pcmcia_sock_init(struct pcmcia_socket *sock)
{
	struct au1000_pcmcia_socket *skt = to_au1000_socket(sock);

	debug("initializing socket %u\n", skt->nr);

	skt->ops->socket_init(skt);
	return 0;
}

/*
 * au1x00_pcmcia_suspend()
 *
 * Remove power on the socket, disable IRQs from the card.
 * Turn off status interrupts, and disable the PCMCIA bus.
 *
 * Returns: 0
 */
static int au1x00_pcmcia_suspend(struct pcmcia_socket *sock)
{
	struct au1000_pcmcia_socket *skt = to_au1000_socket(sock);

	debug("suspending socket %u\n", skt->nr);

	skt->ops->socket_suspend(skt);

	return 0;
}

static DEFINE_SPINLOCK(status_lock);

/*
 * au1x00_check_status()
 */
static void au1x00_check_status(struct au1000_pcmcia_socket *skt)
{
	unsigned int events;

	debug("entering PCMCIA monitoring thread\n");

	do {
		unsigned int status;
		unsigned long flags;

		status = au1x00_pcmcia_skt_state(skt);

		spin_lock_irqsave(&status_lock, flags);
		events = (status ^ skt->status) & skt->cs_state.csc_mask;
		skt->status = status;
		spin_unlock_irqrestore(&status_lock, flags);

		debug("events: %s%s%s%s%s%s\n",
			events == 0         ? "<NONE>"   : "",
			events & SS_DETECT  ? "DETECT "  : "",
			events & SS_READY   ? "READY "   : "",
			events & SS_BATDEAD ? "BATDEAD " : "",
			events & SS_BATWARN ? "BATWARN " : "",
			events & SS_STSCHG  ? "STSCHG "  : "");

		if (events)
			pcmcia_parse_events(&skt->socket, events);
	} while (events);
}

/* 
 * au1x00_pcmcia_poll_event()
 * Let's poll for events in addition to IRQs since IRQ only is unreliable...
 */
static void au1x00_pcmcia_poll_event(unsigned long dummy)
{
	struct au1000_pcmcia_socket *skt = (struct au1000_pcmcia_socket *)dummy;
	debug("polling for events\n");

	mod_timer(&skt->poll_timer, jiffies + AU1000_PCMCIA_POLL_PERIOD);

	au1x00_check_status(skt);
}

/* au1x00_pcmcia_get_status()
 *
 * From the sa11xx_core.c:
 * Implements the get_status() operation for the in-kernel PCMCIA
 * service (formerly SS_GetStatus in Card Services). Essentially just
 * fills in bits in `status' according to internal driver state or
 * the value of the voltage detect chipselect register.
 *
 * As a debugging note, during card startup, the PCMCIA core issues
 * three set_socket() commands in a row the first with RESET deasserted,
 * the second with RESET asserted, and the last with RESET deasserted
 * again. Following the third set_socket(), a get_status() command will
 * be issued. The kernel is looking for the SS_READY flag (see
 * setup_socket(), reset_socket(), and unreset_socket() in cs.c).
 *
 * Returns: 0
 */
static int
au1x00_pcmcia_get_status(struct pcmcia_socket *sock, unsigned int *status)
{
	struct au1000_pcmcia_socket *skt = to_au1000_socket(sock);

	skt->status = au1x00_pcmcia_skt_state(skt);
	*status = skt->status;

	return 0;
}

/* au1x00_pcmcia_set_socket()
 * Implements the set_socket() operation for the in-kernel PCMCIA
 * service (formerly SS_SetSocket in Card Services). We more or
 * less punt all of this work and let the kernel handle the details
 * of power configuration, reset, &c. We also record the value of
 * `state' in order to regurgitate it to the PCMCIA core later.
 *
 * Returns: 0
 */
static int
au1x00_pcmcia_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
{
  struct au1000_pcmcia_socket *skt = to_au1000_socket(sock);

  debug("for sock %u\n", skt->nr);

  debug("\tmask:  %s%s%s%s%s%s\n\tflags: %s%s%s%s%s%s\n",
	(state->csc_mask==0)?"<NONE>":"",
	(state->csc_mask&SS_DETECT)?"DETECT ":"",
	(state->csc_mask&SS_READY)?"READY ":"",
	(state->csc_mask&SS_BATDEAD)?"BATDEAD ":"",
	(state->csc_mask&SS_BATWARN)?"BATWARN ":"",
	(state->csc_mask&SS_STSCHG)?"STSCHG ":"",
	(state->flags==0)?"<NONE>":"",
	(state->flags&SS_PWR_AUTO)?"PWR_AUTO ":"",
	(state->flags&SS_IOCARD)?"IOCARD ":"",
	(state->flags&SS_RESET)?"RESET ":"",
	(state->flags&SS_SPKR_ENA)?"SPKR_ENA ":"",
	(state->flags&SS_OUTPUT_ENA)?"OUTPUT_ENA ":"");
  debug("\tVcc %d  Vpp %d  irq %d\n",
	state->Vcc, state->Vpp, state->io_irq);

  return au1x00_pcmcia_config_skt(skt, state);
}

int 
au1x00_pcmcia_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *map)
{
	struct au1000_pcmcia_socket *skt = to_au1000_socket(sock);
	unsigned int speed;

	if(map->map>=MAX_IO_WIN){
		debug("map (%d) out of range\n", map->map);
		return -1;
	}

	if(map->flags&MAP_ACTIVE){
		speed=(map->speed>0)?map->speed:AU1000_PCMCIA_IO_SPEED;
		skt->spd_io[map->map] = speed;
	}

	map->start=(ioaddr_t)(u32)skt->virt_io;
	map->stop=map->start+MAP_SIZE;
	return 0;

}  /* au1x00_pcmcia_set_io_map() */


static int 
au1x00_pcmcia_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *map)
{
	struct au1000_pcmcia_socket *skt = to_au1000_socket(sock);
	unsigned short speed = map->speed;

	if(map->map>=MAX_WIN){
		debug("map (%d) out of range\n", map->map);
		return -1;
	}

	if (map->flags & MAP_ATTRIB) {
		skt->spd_attr[map->map] = speed;
		skt->spd_mem[map->map] = 0;
	} else {
		skt->spd_attr[map->map] = 0;
		skt->spd_mem[map->map] = speed;
	}

	if (map->flags & MAP_ATTRIB) {
		map->static_start = skt->phys_attr + map->card_start;
	}
	else {
		map->static_start = skt->phys_mem + map->card_start;
	}

	debug("set_mem_map %d start %08lx card_start %08x\n",
			map->map, map->static_start, map->card_start);
	return 0;

}  /* au1x00_pcmcia_set_mem_map() */

static struct pccard_operations au1x00_pcmcia_operations = {
	.init			= au1x00_pcmcia_sock_init,
	.suspend		= au1x00_pcmcia_suspend,
	.get_status		= au1x00_pcmcia_get_status,
	.set_socket		= au1x00_pcmcia_set_socket,
	.set_io_map		= au1x00_pcmcia_set_io_map,
	.set_mem_map		= au1x00_pcmcia_set_mem_map,
};

static const char *skt_names[] = {
	"PCMCIA socket 0",
	"PCMCIA socket 1",
};

struct skt_dev_info {
	int nskt;
};

int au1x00_pcmcia_socket_probe(struct device *dev, struct pcmcia_low_level *ops, int first, int nr)
{
	struct skt_dev_info *sinfo;
	int ret, i;

	sinfo = kzalloc(sizeof(struct skt_dev_info), GFP_KERNEL);
	if (!sinfo) {
		ret = -ENOMEM;
		goto out;
	}

	sinfo->nskt = nr;

	/*
	 * Initialise the per-socket structure.
	 */
	for (i = 0; i < nr; i++) {
		struct au1000_pcmcia_socket *skt = PCMCIA_SOCKET(i);
		memset(skt, 0, sizeof(*skt));

		skt->socket.resource_ops = &pccard_static_ops;
		skt->socket.ops = &au1x00_pcmcia_operations;
		skt->socket.owner = ops->owner;
		skt->socket.dev.dev = dev;

		init_timer(&skt->poll_timer);
		skt->poll_timer.function = au1x00_pcmcia_poll_event;
		skt->poll_timer.data = (unsigned long)skt;
		skt->poll_timer.expires = jiffies + AU1000_PCMCIA_POLL_PERIOD;

		skt->nr		= first + i;
		skt->irq	= 255;
		skt->dev	= dev;
		skt->ops	= ops;

		skt->res_skt.name	= skt_names[skt->nr];
		skt->res_io.name	= "io";
		skt->res_io.flags	= IORESOURCE_MEM | IORESOURCE_BUSY;
		skt->res_mem.name	= "memory";
		skt->res_mem.flags	= IORESOURCE_MEM;
		skt->res_attr.name	= "attribute";
		skt->res_attr.flags	= IORESOURCE_MEM;

		/*
		 * PCMCIA client drivers use the inb/outb macros to access the
		 * IO registers. Since mips_io_port_base is added to the
		 * access address of the mips implementation of inb/outb,
		 * we need to subtract it here because we want to access the
		 * I/O or MEM address directly, without going through this
		 * "mips_io_port_base" mechanism.
		 */
		if (i == 0) {
			skt->virt_io = (void *)
				(ioremap((phys_t)AU1X_SOCK0_IO, 0x1000) -
				(u32)mips_io_port_base);
			skt->phys_attr = AU1X_SOCK0_PSEUDO_PHYS_ATTR;
			skt->phys_mem = AU1X_SOCK0_PSEUDO_PHYS_MEM;
		}
#ifndef CONFIG_MIPS_XXS1500
		else  {
			skt->virt_io = (void *)
				(ioremap((phys_t)AU1X_SOCK1_IO, 0x1000) -
				(u32)mips_io_port_base);
			skt->phys_attr = AU1X_SOCK1_PSEUDO_PHYS_ATTR;
			skt->phys_mem = AU1X_SOCK1_PSEUDO_PHYS_MEM;
		}
#endif
		pcmcia_base_vaddrs[i] = (u32 *)skt->virt_io;
		ret = ops->hw_init(skt);

		skt->socket.features = SS_CAP_STATIC_MAP|SS_CAP_PCCARD;
		skt->socket.irq_mask = 0;
		skt->socket.map_size = MAP_SIZE;
		skt->socket.pci_irq = skt->irq;
		skt->socket.io_offset = (unsigned long)skt->virt_io;

		skt->status = au1x00_pcmcia_skt_state(skt);

		ret = pcmcia_register_socket(&skt->socket);
		if (ret)
			goto out_err;

		WARN_ON(skt->socket.sock != i);

		add_timer(&skt->poll_timer);
	}

	dev_set_drvdata(dev, sinfo);
	return 0;

	do {
		struct au1000_pcmcia_socket *skt = PCMCIA_SOCKET(i);

		del_timer_sync(&skt->poll_timer);
		pcmcia_unregister_socket(&skt->socket);
out_err:
		flush_scheduled_work();
		ops->hw_shutdown(skt);

		i--;
	} while (i > 0);
	kfree(sinfo);
out:
	return ret;
}

int au1x00_drv_pcmcia_remove(struct device *dev)
{
	struct skt_dev_info *sinfo = dev_get_drvdata(dev);
	int i;

	down(&pcmcia_sockets_lock);
	dev_set_drvdata(dev, NULL);

	for (i = 0; i < sinfo->nskt; i++) {
		struct au1000_pcmcia_socket *skt = PCMCIA_SOCKET(i);

		del_timer_sync(&skt->poll_timer);
		pcmcia_unregister_socket(&skt->socket);
		flush_scheduled_work();
		skt->ops->hw_shutdown(skt);
		au1x00_pcmcia_config_skt(skt, &dead_socket);
		iounmap(skt->virt_io + (u32)mips_io_port_base);
		skt->virt_io = NULL;
	}

	kfree(sinfo);
	up(&pcmcia_sockets_lock);
	return 0;
}


/*
 * PCMCIA "Driver" API
 */

static int au1x00_drv_pcmcia_probe(struct device *dev)
{
	int i, ret = -ENODEV;

	down(&pcmcia_sockets_lock);
	for (i=0; i < ARRAY_SIZE(au1x00_pcmcia_hw_init); i++) {
		ret = au1x00_pcmcia_hw_init[i](dev);
		if (ret == 0)
			break;
	}
	up(&pcmcia_sockets_lock);
	return ret;
}


static struct device_driver au1x00_pcmcia_driver = {
	.probe		= au1x00_drv_pcmcia_probe,
	.remove		= au1x00_drv_pcmcia_remove,
	.name		= "au1x00-pcmcia",
	.bus		= &platform_bus_type,
	.suspend	= pcmcia_socket_dev_suspend,
	.resume		= pcmcia_socket_dev_resume,
};


/* au1x00_pcmcia_init()
 *
 * This routine performs low-level PCMCIA initialization and then
 * registers this socket driver with Card Services.
 *
 * Returns: 0 on success, -ve error code on failure
 */
static int __init au1x00_pcmcia_init(void)
{
	int error = 0;
	if ((error = driver_register(&au1x00_pcmcia_driver)))
		return error;
	return error;
}

/* au1x00_pcmcia_exit()
 * Invokes the low-level kernel service to free IRQs associated with this
 * socket controller and reset GPIO edge detection.
 */
static void __exit au1x00_pcmcia_exit(void)
{
	driver_unregister(&au1x00_pcmcia_driver);
}

module_init(au1x00_pcmcia_init);
module_exit(au1x00_pcmcia_exit);
Commit	Line	Data
1da177e4 LT	1	/*
	2	*
	3	* Alchemy Semi Au1000 pcmcia driver
	4	*
	5	* Copyright 2001-2003 MontaVista Software Inc.
	6	* Author: MontaVista Software, Inc.
	7	* [email protected] or [email protected]
	8	*
	9	* Copyright 2004 Pete Popov, Embedded Alley Solutions, Inc.
	10	* Updated the driver to 2.6. Followed the sa11xx API and largely
	11	* copied many of the hardware independent functions.
	12	*
	13	* ########################################################################
	14	*
	15	* This program is free software; you can distribute it and/or modify it
	16	* under the terms of the GNU General Public License (Version 2) as
	17	* published by the Free Software Foundation.
	18	*
	19	* This program is distributed in the hope it will be useful, but WITHOUT
	20	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	21	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	22	* for more details.
	23	*
	24	* You should have received a copy of the GNU General Public License along
	25	* with this program; if not, write to the Free Software Foundation, Inc.,
	26	* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
	27	*
	28	* ########################################################################
	29	*
	30	*
	31	*/
	32
	33	#include <linux/module.h>
	34	#include <linux/moduleparam.h>
	35	#include <linux/init.h>
1da177e4 LT	36	#include <linux/cpufreq.h>
	37	#include <linux/ioport.h>
	38	#include <linux/kernel.h>
	39	#include <linux/timer.h>
	40	#include <linux/mm.h>
	41	#include <linux/notifier.h>
	42	#include <linux/interrupt.h>
	43	#include <linux/spinlock.h>
d052d1be	44	#include <linux/platform_device.h>
1da177e4 LT	45
	46	#include <asm/io.h>
	47	#include <asm/irq.h>
	48	#include <asm/system.h>
	49
	50	#include <asm/mach-au1x00/au1000.h>
	51	#include "au1000_generic.h"
	52
	53	MODULE_LICENSE("GPL");
	54	MODULE_AUTHOR("Pete Popov <[email protected]>");
	55	MODULE_DESCRIPTION("Linux PCMCIA Card Services: Au1x00 Socket Controller");
	56
	57	#if 0
	58	#define debug(x,args...) printk(KERN_DEBUG "%s: " x, __func__ , ##args)
	59	#else
	60	#define debug(x,args...)
	61	#endif
	62
	63	#define MAP_SIZE 0x100000
	64	extern struct au1000_pcmcia_socket au1000_pcmcia_socket[];
	65	#define PCMCIA_SOCKET(x) (au1000_pcmcia_socket + (x))
	66	#define to_au1000_socket(x) container_of(x, struct au1000_pcmcia_socket, socket)
	67
	68	/* Some boards like to support CF cards as IDE root devices, so they
	69	* grab pcmcia sockets directly.
	70	*/
	71	u32 *pcmcia_base_vaddrs[2];
	72	extern const unsigned long mips_io_port_base;
	73
	74	DECLARE_MUTEX(pcmcia_sockets_lock);
	75
	76	static int (au1x00_pcmcia_hw_init[])(struct device dev) = {
	77	au1x_board_init,
	78	};
	79
	80	static int
	81	au1x00_pcmcia_skt_state(struct au1000_pcmcia_socket *skt)
	82	{
	83	struct pcmcia_state state;
	84	unsigned int stat;
	85
	86	memset(&state, 0, sizeof(struct pcmcia_state));
	87
	88	skt->ops->socket_state(skt, &state);
	89
	90	stat = state.detect ? SS_DETECT : 0;
	91	stat \|= state.ready ? SS_READY : 0;
	92	stat \|= state.wrprot ? SS_WRPROT : 0;
	93	stat \|= state.vs_3v ? SS_3VCARD : 0;
	94	stat \|= state.vs_Xv ? SS_XVCARD : 0;
	95	stat \|= skt->cs_state.Vcc ? SS_POWERON : 0;
	96
	97	if (skt->cs_state.flags & SS_IOCARD)
	98	stat \|= state.bvd1 ? SS_STSCHG : 0;
	99	else {
	100	if (state.bvd1 == 0)
	101	stat \|= SS_BATDEAD;
	102	else if (state.bvd2 == 0)
	103	stat \|= SS_BATWARN;
	104	}
	105	return stat;
	106	}
	107
	108	/*
109	* au100_pcmcia_config_skt
110	*
111	* Convert PCMCIA socket state to our socket configure structure.
112	*/
113	static int
114	au1x00_pcmcia_config_skt(struct au1000_pcmcia_socket skt, socket_state_t state)
115	{
116	int ret;
117
118	ret = skt->ops->configure_socket(skt, state);
119	if (ret == 0) {
120	skt->cs_state = *state;
121	}
122
123	if (ret < 0)
124	debug("unable to configure socket %d\n", skt->nr);
125
126	return ret;
127	}
128
129	/* au1x00_pcmcia_sock_init()
130	*
131	* (Re-)Initialise the socket, turning on status interrupts
132	* and PCMCIA bus. This must wait for power to stabilise
133	* so that the card status signals report correctly.
134	*
135	* Returns: 0
136	*/
137	static int au1x00_pcmcia_sock_init(struct pcmcia_socket *sock)
138	{
139	struct au1000_pcmcia_socket *skt = to_au1000_socket(sock);
140
141	debug("initializing socket %u\n", skt->nr);
142
143	skt->ops->socket_init(skt);
144	return 0;
145	}
146
147	/*
148	* au1x00_pcmcia_suspend()
149	*
150	* Remove power on the socket, disable IRQs from the card.
151	* Turn off status interrupts, and disable the PCMCIA bus.
152	*
153	* Returns: 0
154	*/
155	static int au1x00_pcmcia_suspend(struct pcmcia_socket *sock)
156	{
157	struct au1000_pcmcia_socket *skt = to_au1000_socket(sock);
158
159	debug("suspending socket %u\n", skt->nr);
160
161	skt->ops->socket_suspend(skt);
162
163	return 0;
164	}
165
166	static DEFINE_SPINLOCK(status_lock);
167
168	/*
169	* au1x00_check_status()
170	*/
171	static void au1x00_check_status(struct au1000_pcmcia_socket *skt)
172	{
173	unsigned int events;
174
175	debug("entering PCMCIA monitoring thread\n");
176
177	do {
178	unsigned int status;
179	unsigned long flags;
180
181	status = au1x00_pcmcia_skt_state(skt);
182
183	spin_lock_irqsave(&status_lock, flags);
184	events = (status ^ skt->status) & skt->cs_state.csc_mask;
185	skt->status = status;
186	spin_unlock_irqrestore(&status_lock, flags);
187
188	debug("events: %s%s%s%s%s%s\n",
189	events == 0 ? "<NONE>" : "",
190	events & SS_DETECT ? "DETECT " : "",
191	events & SS_READY ? "READY " : "",
192	events & SS_BATDEAD ? "BATDEAD " : "",
193	events & SS_BATWARN ? "BATWARN " : "",
194	events & SS_STSCHG ? "STSCHG " : "");
195
196	if (events)
197	pcmcia_parse_events(&skt->socket, events);
198	} while (events);
199	}
200
201	/*
202	* au1x00_pcmcia_poll_event()
203	* Let's poll for events in addition to IRQs since IRQ only is unreliable...
204	*/
205	static void au1x00_pcmcia_poll_event(unsigned long dummy)
206	{
207	struct au1000_pcmcia_socket skt = (struct au1000_pcmcia_socket )dummy;
208	debug("polling for events\n");
209
210	mod_timer(&skt->poll_timer, jiffies + AU1000_PCMCIA_POLL_PERIOD);
211
212	au1x00_check_status(skt);
213	}
214
215	/* au1x00_pcmcia_get_status()
216	*
217	* From the sa11xx_core.c:
218	* Implements the get_status() operation for the in-kernel PCMCIA
219	* service (formerly SS_GetStatus in Card Services). Essentially just
220	* fills in bits in `status' according to internal driver state or
221	* the value of the voltage detect chipselect register.
222	*
223	* As a debugging note, during card startup, the PCMCIA core issues
224	* three set_socket() commands in a row the first with RESET deasserted,
225	* the second with RESET asserted, and the last with RESET deasserted
226	* again. Following the third set_socket(), a get_status() command will
227	* be issued. The kernel is looking for the SS_READY flag (see
228	* setup_socket(), reset_socket(), and unreset_socket() in cs.c).
229	*
230	* Returns: 0
231	*/
232	static int
233	au1x00_pcmcia_get_status(struct pcmcia_socket sock, unsigned int status)
234	{
235	struct au1000_pcmcia_socket *skt = to_au1000_socket(sock);
236
237	skt->status = au1x00_pcmcia_skt_state(skt);
238	*status = skt->status;
239
240	return 0;
241	}
242
1da177e4 LT	243	/* au1x00_pcmcia_set_socket()
	244	* Implements the set_socket() operation for the in-kernel PCMCIA
	245	* service (formerly SS_SetSocket in Card Services). We more or
	246	* less punt all of this work and let the kernel handle the details
	247	* of power configuration, reset, &c. We also record the value of
	248	* `state' in order to regurgitate it to the PCMCIA core later.
	249	*
	250	* Returns: 0
	251	*/
	252	static int
	253	au1x00_pcmcia_set_socket(struct pcmcia_socket sock, socket_state_t state)
	254	{
	255	struct au1000_pcmcia_socket *skt = to_au1000_socket(sock);
	256
	257	debug("for sock %u\n", skt->nr);
	258
	259	debug("\tmask: %s%s%s%s%s%s\n\tflags: %s%s%s%s%s%s\n",
	260	(state->csc_mask==0)?"<NONE>":"",
	261	(state->csc_mask&SS_DETECT)?"DETECT ":"",
	262	(state->csc_mask&SS_READY)?"READY ":"",
	263	(state->csc_mask&SS_BATDEAD)?"BATDEAD ":"",
	264	(state->csc_mask&SS_BATWARN)?"BATWARN ":"",
	265	(state->csc_mask&SS_STSCHG)?"STSCHG ":"",
	266	(state->flags==0)?"<NONE>":"",
	267	(state->flags&SS_PWR_AUTO)?"PWR_AUTO ":"",
	268	(state->flags&SS_IOCARD)?"IOCARD ":"",
	269	(state->flags&SS_RESET)?"RESET ":"",
	270	(state->flags&SS_SPKR_ENA)?"SPKR_ENA ":"",
	271	(state->flags&SS_OUTPUT_ENA)?"OUTPUT_ENA ":"");
	272	debug("\tVcc %d Vpp %d irq %d\n",
	273	state->Vcc, state->Vpp, state->io_irq);
	274
	275	return au1x00_pcmcia_config_skt(skt, state);
	276	}
	277
	278	int
	279	au1x00_pcmcia_set_io_map(struct pcmcia_socket sock, struct pccard_io_map map)
	280	{
	281	struct au1000_pcmcia_socket *skt = to_au1000_socket(sock);
	282	unsigned int speed;
	283
	284	if(map->map>=MAX_IO_WIN){
	285	debug("map (%d) out of range\n", map->map);
	286	return -1;
	287	}
	288
	289	if(map->flags&MAP_ACTIVE){
	290	speed=(map->speed>0)?map->speed:AU1000_PCMCIA_IO_SPEED;
	291	skt->spd_io[map->map] = speed;
	292	}
	293
	294	map->start=(ioaddr_t)(u32)skt->virt_io;
	295	map->stop=map->start+MAP_SIZE;
	296	return 0;
	297
	298	} /* au1x00_pcmcia_set_io_map() */
	299
	300
	301	static int
	302	au1x00_pcmcia_set_mem_map(struct pcmcia_socket sock, struct pccard_mem_map map)
	303	{
	304	struct au1000_pcmcia_socket *skt = to_au1000_socket(sock);
	305	unsigned short speed = map->speed;
	306
307	if(map->map>=MAX_WIN){
308	debug("map (%d) out of range\n", map->map);
309	return -1;
310	}
311
312	if (map->flags & MAP_ATTRIB) {
313	skt->spd_attr[map->map] = speed;
314	skt->spd_mem[map->map] = 0;
315	} else {
316	skt->spd_attr[map->map] = 0;
317	skt->spd_mem[map->map] = speed;
318	}
319
320	if (map->flags & MAP_ATTRIB) {
321	map->static_start = skt->phys_attr + map->card_start;
322	}
323	else {
324	map->static_start = skt->phys_mem + map->card_start;
325	}
326
327	debug("set_mem_map %d start %08lx card_start %08x\n",
328	map->map, map->static_start, map->card_start);
329	return 0;
330
331	} /* au1x00_pcmcia_set_mem_map() */
332
333	static struct pccard_operations au1x00_pcmcia_operations = {
334	.init = au1x00_pcmcia_sock_init,
335	.suspend = au1x00_pcmcia_suspend,
336	.get_status = au1x00_pcmcia_get_status,
1da177e4 LT	337	.set_socket = au1x00_pcmcia_set_socket,
	338	.set_io_map = au1x00_pcmcia_set_io_map,
	339	.set_mem_map = au1x00_pcmcia_set_mem_map,
	340	};
	341
	342	static const char *skt_names[] = {
	343	"PCMCIA socket 0",
	344	"PCMCIA socket 1",
	345	};
	346
	347	struct skt_dev_info {
	348	int nskt;
	349	};
	350
	351	int au1x00_pcmcia_socket_probe(struct device dev, struct pcmcia_low_level ops, int first, int nr)
	352	{
	353	struct skt_dev_info *sinfo;
	354	int ret, i;
	355
8084b372	356	sinfo = kzalloc(sizeof(struct skt_dev_info), GFP_KERNEL);
1da177e4 LT	357	if (!sinfo) {
	358	ret = -ENOMEM;
	359	goto out;
	360	}
	361
1da177e4 LT	362	sinfo->nskt = nr;
	363
	364	/*
	365	* Initialise the per-socket structure.
	366	*/
	367	for (i = 0; i < nr; i++) {
	368	struct au1000_pcmcia_socket *skt = PCMCIA_SOCKET(i);
	369	memset(skt, 0, sizeof(*skt));
	370
dc33a4a3	371	skt->socket.resource_ops = &pccard_static_ops;
1da177e4 LT	372	skt->socket.ops = &au1x00_pcmcia_operations;
	373	skt->socket.owner = ops->owner;
	374	skt->socket.dev.dev = dev;
	375
	376	init_timer(&skt->poll_timer);
	377	skt->poll_timer.function = au1x00_pcmcia_poll_event;
	378	skt->poll_timer.data = (unsigned long)skt;
	379	skt->poll_timer.expires = jiffies + AU1000_PCMCIA_POLL_PERIOD;
	380
	381	skt->nr = first + i;
	382	skt->irq = 255;
	383	skt->dev = dev;
	384	skt->ops = ops;
	385
	386	skt->res_skt.name = skt_names[skt->nr];
	387	skt->res_io.name = "io";
	388	skt->res_io.flags = IORESOURCE_MEM \| IORESOURCE_BUSY;
	389	skt->res_mem.name = "memory";
	390	skt->res_mem.flags = IORESOURCE_MEM;
	391	skt->res_attr.name = "attribute";
	392	skt->res_attr.flags = IORESOURCE_MEM;
	393
	394	/*
	395	* PCMCIA client drivers use the inb/outb macros to access the
	396	* IO registers. Since mips_io_port_base is added to the
	397	* access address of the mips implementation of inb/outb,
	398	* we need to subtract it here because we want to access the
	399	* I/O or MEM address directly, without going through this
	400	* "mips_io_port_base" mechanism.
	401	*/
	402	if (i == 0) {
	403	skt->virt_io = (void *)
	404	(ioremap((phys_t)AU1X_SOCK0_IO, 0x1000) -
	405	(u32)mips_io_port_base);
	406	skt->phys_attr = AU1X_SOCK0_PSEUDO_PHYS_ATTR;
	407	skt->phys_mem = AU1X_SOCK0_PSEUDO_PHYS_MEM;
	408	}
	409	#ifndef CONFIG_MIPS_XXS1500
	410	else {
	411	skt->virt_io = (void *)
	412	(ioremap((phys_t)AU1X_SOCK1_IO, 0x1000) -
	413	(u32)mips_io_port_base);
	414	skt->phys_attr = AU1X_SOCK1_PSEUDO_PHYS_ATTR;
	415	skt->phys_mem = AU1X_SOCK1_PSEUDO_PHYS_MEM;
	416	}
	417	#endif
	418	pcmcia_base_vaddrs[i] = (u32 *)skt->virt_io;
	419	ret = ops->hw_init(skt);
	420
	421	skt->socket.features = SS_CAP_STATIC_MAP\|SS_CAP_PCCARD;
	422	skt->socket.irq_mask = 0;
	423	skt->socket.map_size = MAP_SIZE;
	424	skt->socket.pci_irq = skt->irq;
	425	skt->socket.io_offset = (unsigned long)skt->virt_io;
	426
	427	skt->status = au1x00_pcmcia_skt_state(skt);
	428
	429	ret = pcmcia_register_socket(&skt->socket);
	430	if (ret)
	431	goto out_err;
	432
	433	WARN_ON(skt->socket.sock != i);
	434
	435	add_timer(&skt->poll_timer);
436	}
437
438	dev_set_drvdata(dev, sinfo);
439	return 0;
440
441	do {
442	struct au1000_pcmcia_socket *skt = PCMCIA_SOCKET(i);
443
444	del_timer_sync(&skt->poll_timer);
445	pcmcia_unregister_socket(&skt->socket);
446	out_err:
447	flush_scheduled_work();
448	ops->hw_shutdown(skt);
449
450	i--;
451	} while (i > 0);
452	kfree(sinfo);
453	out:
454	return ret;
455	}
456
457	int au1x00_drv_pcmcia_remove(struct device *dev)
458	{
459	struct skt_dev_info *sinfo = dev_get_drvdata(dev);
460	int i;
461
462	down(&pcmcia_sockets_lock);
463	dev_set_drvdata(dev, NULL);
464
465	for (i = 0; i < sinfo->nskt; i++) {
466	struct au1000_pcmcia_socket *skt = PCMCIA_SOCKET(i);
467
468	del_timer_sync(&skt->poll_timer);
469	pcmcia_unregister_socket(&skt->socket);
470	flush_scheduled_work();
471	skt->ops->hw_shutdown(skt);
472	au1x00_pcmcia_config_skt(skt, &dead_socket);
efe29c0f	473	iounmap(skt->virt_io + (u32)mips_io_port_base);
1da177e4 LT	474	skt->virt_io = NULL;
	475	}
	476
	477	kfree(sinfo);
	478	up(&pcmcia_sockets_lock);
	479	return 0;
	480	}
	481
	482
	483	/*
	484	* PCMCIA "Driver" API
	485	*/
	486
	487	static int au1x00_drv_pcmcia_probe(struct device *dev)
	488	{
	489	int i, ret = -ENODEV;
	490
	491	down(&pcmcia_sockets_lock);
	492	for (i=0; i < ARRAY_SIZE(au1x00_pcmcia_hw_init); i++) {
	493	ret = au1x00_pcmcia_hw_init[i](dev);
	494	if (ret == 0)
	495	break;
	496	}
	497	up(&pcmcia_sockets_lock);
	498	return ret;
	499	}
	500
	501
1da177e4 LT	502	static struct device_driver au1x00_pcmcia_driver = {
	503	.probe = au1x00_drv_pcmcia_probe,
	504	.remove = au1x00_drv_pcmcia_remove,
	505	.name = "au1x00-pcmcia",
	506	.bus = &platform_bus_type,
9480e307 RK	507	.suspend = pcmcia_socket_dev_suspend,
9480e307 RK	508	.resume = pcmcia_socket_dev_resume,
1da177e4 LT	509	};
1da177e4 LT	510
1da177e4 LT	511
	512	/* au1x00_pcmcia_init()
	513	*
	514	* This routine performs low-level PCMCIA initialization and then
	515	* registers this socket driver with Card Services.
	516	*
	517	* Returns: 0 on success, -ve error code on failure
	518	*/
	519	static int __init au1x00_pcmcia_init(void)
	520	{
	521	int error = 0;
	522	if ((error = driver_register(&au1x00_pcmcia_driver)))
	523	return error;
1da177e4 LT	524	return error;
	525	}
	526
	527	/* au1x00_pcmcia_exit()
	528	* Invokes the low-level kernel service to free IRQs associated with this
	529	* socket controller and reset GPIO edge detection.
	530	*/
	531	static void __exit au1x00_pcmcia_exit(void)
	532	{
	533	driver_unregister(&au1x00_pcmcia_driver);
1da177e4 LT	534	}
	535
	536	module_init(au1x00_pcmcia_init);
	537	module_exit(au1x00_pcmcia_exit);