Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 579 insertions, 0 deletions

diff --git a/drivers/pcmcia/au1000_generic.c b/drivers/pcmcia/au1000_generic.c
new file mode 100644
index 00000000000..9fa7f15d89e
--- /dev/null
+++ b/drivers/pcmcia/au1000_generic.c
@@ -0,0 +1,579 @@
+/*
+ *
+ * Alchemy Semi Au1000 pcmcia driver
+ *
+ * Copyright 2001-2003 MontaVista Software Inc.
+ * Author: MontaVista Software, Inc.
+ *         	ppopov@embeddedalley.com or source@mvista.com
+ *
+ * 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/config.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/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 <ppopov@embeddedalley.com>");
+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_get_socket()
+ * Implements the get_socket() operation for the in-kernel PCMCIA
+ * service (formerly SS_GetSocket in Card Services). Not a very
+ * exciting routine.
+ *
+ * Returns: 0
+ */
+static int
+au1x00_pcmcia_get_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);
+  *state = skt->cs_state;
+  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,
+	.get_socket		= au1x00_pcmcia_get_socket,
+	.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 = kmalloc(sizeof(struct skt_dev_info), GFP_KERNEL);
+	if (!sinfo) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	memset(sinfo, 0, sizeof(struct skt_dev_info));
+	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.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);
+		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 int au1x00_drv_pcmcia_suspend(struct device *dev, u32 state, u32 level)
+{
+	int ret = 0;
+	if (level == SUSPEND_SAVE_STATE)
+		ret = pcmcia_socket_dev_suspend(dev, state);
+	return ret;
+}
+
+static int au1x00_drv_pcmcia_resume(struct device *dev, u32 level)
+{
+	int ret = 0;
+	if (level == RESUME_RESTORE_STATE)
+		ret = pcmcia_socket_dev_resume(dev);
+	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	= au1x00_drv_pcmcia_suspend,
+	.resume		= au1x00_drv_pcmcia_resume
+};
+
+static struct platform_device au1x00_device = {
+	.name = "au1x00-pcmcia",
+	.id = 0,
+};
+
+/* 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;
+	platform_device_register(&au1x00_device);
+	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);
+	platform_device_unregister(&au1x00_device);
+}
+
+module_init(au1x00_pcmcia_init);
+module_exit(au1x00_pcmcia_exit);