diff options
Diffstat (limited to 'drivers/pcmcia/au1000_generic.c')
| -rw-r--r-- | drivers/pcmcia/au1000_generic.c | 545 |
1 files changed, 0 insertions, 545 deletions
diff --git a/drivers/pcmcia/au1000_generic.c b/drivers/pcmcia/au1000_generic.c deleted file mode 100644 index 95dd7c6..0000000 --- a/drivers/pcmcia/au1000_generic.c +++ /dev/null @@ -1,545 +0,0 @@ -/* - * - * 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/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/mutex.h> -#include <linux/platform_device.h> -#include <linux/slab.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; - -static DEFINE_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=(unsigned int)(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; - struct au1000_pcmcia_socket *skt; - 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++) { - 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.parent = 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_PHYS_ATTR; - skt->phys_mem = AU1X_SOCK0_PHYS_MEM; - } - else { - skt->virt_io = (void *) - (ioremap((phys_t)AU1X_SOCK1_IO, 0x1000) - - (u32)mips_io_port_base); - skt->phys_attr = AU1X_SOCK1_PHYS_ATTR; - skt->phys_mem = AU1X_SOCK1_PHYS_MEM; - } - 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; - - -out_err: - ops->hw_shutdown(skt); - while (i-- > 0) { - skt = PCMCIA_SOCKET(i); - - del_timer_sync(&skt->poll_timer); - pcmcia_unregister_socket(&skt->socket); - if (i == 0) { - iounmap(skt->virt_io + (u32)mips_io_port_base); - skt->virt_io = NULL; - } -#ifndef CONFIG_MIPS_XXS1500 - else { - iounmap(skt->virt_io + (u32)mips_io_port_base); - skt->virt_io = NULL; - } -#endif - ops->hw_shutdown(skt); - - } - kfree(sinfo); -out: - return ret; -} - -int au1x00_drv_pcmcia_remove(struct platform_device *dev) -{ - struct skt_dev_info *sinfo = platform_get_drvdata(dev); - int i; - - mutex_lock(&pcmcia_sockets_lock); - platform_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); - 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); - mutex_unlock(&pcmcia_sockets_lock); - return 0; -} - - -/* - * PCMCIA "Driver" API - */ - -static int au1x00_drv_pcmcia_probe(struct platform_device *dev) -{ - int i, ret = -ENODEV; - - mutex_lock(&pcmcia_sockets_lock); - for (i=0; i < ARRAY_SIZE(au1x00_pcmcia_hw_init); i++) { - ret = au1x00_pcmcia_hw_init[i](&dev->dev); - if (ret == 0) - break; - } - mutex_unlock(&pcmcia_sockets_lock); - return ret; -} - -static struct platform_driver au1x00_pcmcia_driver = { - .driver = { - .name = "au1x00-pcmcia", - .owner = THIS_MODULE, - }, - .probe = au1x00_drv_pcmcia_probe, - .remove = au1x00_drv_pcmcia_remove, -}; - - -/* 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; - error = platform_driver_register(&au1x00_pcmcia_driver); - 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) -{ - platform_driver_unregister(&au1x00_pcmcia_driver); -} - -module_init(au1x00_pcmcia_init); -module_exit(au1x00_pcmcia_exit); |
