diff options
Diffstat (limited to 'drivers/pcmcia/m32r_pcc.c')
| -rw-r--r-- | drivers/pcmcia/m32r_pcc.c | 763 |
1 files changed, 0 insertions, 763 deletions
diff --git a/drivers/pcmcia/m32r_pcc.c b/drivers/pcmcia/m32r_pcc.c deleted file mode 100644 index c2239a7e383a..000000000000 --- a/drivers/pcmcia/m32r_pcc.c +++ /dev/null @@ -1,763 +0,0 @@ -/* - * drivers/pcmcia/m32r_pcc.c - * - * Device driver for the PCMCIA functionality of M32R. - * - * Copyright (c) 2001, 2002, 2003, 2004 - * Hiroyuki Kondo, Naoto Sugai, Hayato Fujiwara - */ - -#include <linux/module.h> -#include <linux/moduleparam.h> -#include <linux/init.h> -#include <linux/types.h> -#include <linux/fcntl.h> -#include <linux/string.h> -#include <linux/kernel.h> -#include <linux/errno.h> -#include <linux/timer.h> -#include <linux/ioport.h> -#include <linux/delay.h> -#include <linux/workqueue.h> -#include <linux/interrupt.h> -#include <linux/platform_device.h> -#include <linux/bitops.h> -#include <asm/irq.h> -#include <asm/io.h> -#include <asm/addrspace.h> - -#include <pcmcia/ss.h> - -/* XXX: should be moved into asm/irq.h */ -#define PCC0_IRQ 24 -#define PCC1_IRQ 25 - -#include "m32r_pcc.h" - -#define CHAOS_PCC_DEBUG -#ifdef CHAOS_PCC_DEBUG - static volatile u_short dummy_readbuf; -#endif - -#define PCC_DEBUG_DBEX - - -/* Poll status interval -- 0 means default to interrupt */ -static int poll_interval = 0; - -typedef enum pcc_space { as_none = 0, as_comm, as_attr, as_io } pcc_as_t; - -typedef struct pcc_socket { - u_short type, flags; - struct pcmcia_socket socket; - unsigned int number; - unsigned int ioaddr; - u_long mapaddr; - u_long base; /* PCC register base */ - u_char cs_irq, intr; - pccard_io_map io_map[MAX_IO_WIN]; - pccard_mem_map mem_map[MAX_WIN]; - u_char io_win; - u_char mem_win; - pcc_as_t current_space; - u_char last_iodbex; -#ifdef CHAOS_PCC_DEBUG - u_char last_iosize; -#endif -#ifdef CONFIG_PROC_FS - struct proc_dir_entry *proc; -#endif -} pcc_socket_t; - -static int pcc_sockets = 0; -static pcc_socket_t socket[M32R_MAX_PCC] = { - { 0, }, /* ... */ -}; - -/*====================================================================*/ - -static unsigned int pcc_get(u_short, unsigned int); -static void pcc_set(u_short, unsigned int , unsigned int ); - -static DEFINE_SPINLOCK(pcc_lock); - -void pcc_iorw(int sock, unsigned long port, void *buf, size_t size, size_t nmemb, int wr, int flag) -{ - u_long addr; - u_long flags; - int need_ex; -#ifdef PCC_DEBUG_DBEX - int _dbex; -#endif - pcc_socket_t *t = &socket[sock]; -#ifdef CHAOS_PCC_DEBUG - int map_changed = 0; -#endif - - /* Need lock ? */ - spin_lock_irqsave(&pcc_lock, flags); - - /* - * Check if need dbex - */ - need_ex = (size > 1 && flag == 0) ? PCMOD_DBEX : 0; -#ifdef PCC_DEBUG_DBEX - _dbex = need_ex; - need_ex = 0; -#endif - - /* - * calculate access address - */ - addr = t->mapaddr + port - t->ioaddr + KSEG1; /* XXX */ - - /* - * Check current mapping - */ - if (t->current_space != as_io || t->last_iodbex != need_ex) { - - u_long cbsz; - - /* - * Disable first - */ - pcc_set(sock, PCCR, 0); - - /* - * Set mode and io address - */ - cbsz = (t->flags & MAP_16BIT) ? 0 : PCMOD_CBSZ; - pcc_set(sock, PCMOD, PCMOD_AS_IO | cbsz | need_ex); - pcc_set(sock, PCADR, addr & 0x1ff00000); - - /* - * Enable and read it - */ - pcc_set(sock, PCCR, 1); - -#ifdef CHAOS_PCC_DEBUG -#if 0 - map_changed = (t->current_space == as_attr && size == 2); /* XXX */ -#else - map_changed = 1; -#endif -#endif - t->current_space = as_io; - } - - /* - * access to IO space - */ - if (size == 1) { - /* Byte */ - unsigned char *bp = (unsigned char *)buf; - -#ifdef CHAOS_DEBUG - if (map_changed) { - dummy_readbuf = readb(addr); - } -#endif - if (wr) { - /* write Byte */ - while (nmemb--) { - writeb(*bp++, addr); - } - } else { - /* read Byte */ - while (nmemb--) { - *bp++ = readb(addr); - } - } - } else { - /* Word */ - unsigned short *bp = (unsigned short *)buf; - -#ifdef CHAOS_PCC_DEBUG - if (map_changed) { - dummy_readbuf = readw(addr); - } -#endif - if (wr) { - /* write Word */ - while (nmemb--) { -#ifdef PCC_DEBUG_DBEX - if (_dbex) { - unsigned char *cp = (unsigned char *)bp; - unsigned short tmp; - tmp = cp[1] << 8 | cp[0]; - writew(tmp, addr); - bp++; - } else -#endif - writew(*bp++, addr); - } - } else { - /* read Word */ - while (nmemb--) { -#ifdef PCC_DEBUG_DBEX - if (_dbex) { - unsigned char *cp = (unsigned char *)bp; - unsigned short tmp; - tmp = readw(addr); - cp[0] = tmp & 0xff; - cp[1] = (tmp >> 8) & 0xff; - bp++; - } else -#endif - *bp++ = readw(addr); - } - } - } - -#if 1 - /* addr is no longer used */ - if ((addr = pcc_get(sock, PCIRC)) & PCIRC_BWERR) { - printk("m32r_pcc: BWERR detected : port 0x%04lx : iosize %dbit\n", - port, size * 8); - pcc_set(sock, PCIRC, addr); - } -#endif - /* - * save state - */ - t->last_iosize = size; - t->last_iodbex = need_ex; - - /* Need lock ? */ - - spin_unlock_irqrestore(&pcc_lock,flags); - - return; -} - -void pcc_ioread(int sock, unsigned long port, void *buf, size_t size, size_t nmemb, int flag) { - pcc_iorw(sock, port, buf, size, nmemb, 0, flag); -} - -void pcc_iowrite(int sock, unsigned long port, void *buf, size_t size, size_t nmemb, int flag) { - pcc_iorw(sock, port, buf, size, nmemb, 1, flag); -} - -/*====================================================================*/ - -#define IS_REGISTERED 0x2000 -#define IS_ALIVE 0x8000 - -typedef struct pcc_t { - char *name; - u_short flags; -} pcc_t; - -static pcc_t pcc[] = { - { "xnux2", 0 }, { "xnux2", 0 }, -}; - -static irqreturn_t pcc_interrupt(int, void *); - -/*====================================================================*/ - -static struct timer_list poll_timer; - -static unsigned int pcc_get(u_short sock, unsigned int reg) -{ - return inl(socket[sock].base + reg); -} - - -static void pcc_set(u_short sock, unsigned int reg, unsigned int data) -{ - outl(data, socket[sock].base + reg); -} - -/*====================================================================== - - See if a card is present, powered up, in IO mode, and already - bound to a (non PC Card) Linux driver. We leave these alone. - - We make an exception for cards that seem to be serial devices. - -======================================================================*/ - -static int __init is_alive(u_short sock) -{ - unsigned int stat; - unsigned int f; - - stat = pcc_get(sock, PCIRC); - f = (stat & (PCIRC_CDIN1 | PCIRC_CDIN2)) >> 16; - if(!f){ - printk("m32r_pcc: No Card is detected at socket %d : stat = 0x%08x\n",stat,sock); - return 0; - } - if(f!=3) - printk("m32r_pcc: Insertion fail (%.8x) at socket %d\n",stat,sock); - else - printk("m32r_pcc: Card is Inserted at socket %d(%.8x)\n",sock,stat); - return 0; -} - -static int add_pcc_socket(ulong base, int irq, ulong mapaddr, - unsigned int ioaddr) -{ - pcc_socket_t *t = &socket[pcc_sockets]; - int err; - - /* add sockets */ - t->ioaddr = ioaddr; - t->mapaddr = mapaddr; - t->base = base; -#ifdef CHAOS_PCC_DEBUG - t->flags = MAP_16BIT; -#else - t->flags = 0; -#endif - if (is_alive(pcc_sockets)) - t->flags |= IS_ALIVE; - - /* add pcc */ - if (t->base > 0) { - request_region(t->base, 0x20, "m32r-pcc"); - } - - printk(KERN_INFO " %s ", pcc[pcc_sockets].name); - printk("pcc at 0x%08lx\n", t->base); - - /* Update socket interrupt information, capabilities */ - t->socket.features |= (SS_CAP_PCCARD | SS_CAP_STATIC_MAP); - t->socket.map_size = M32R_PCC_MAPSIZE; - t->socket.io_offset = ioaddr; /* use for io access offset */ - t->socket.irq_mask = 0; - t->socket.pci_irq = 2 + pcc_sockets; /* XXX */ - - err = request_irq(irq, pcc_interrupt, 0, "m32r-pcc", pcc_interrupt); - if (err) { - if (t->base > 0) - release_region(t->base, 0x20); - return err; - } - - pcc_sockets++; - - return 0; -} - - -/*====================================================================*/ - -static irqreturn_t pcc_interrupt(int irq, void *dev) -{ - int i, j, irc; - u_int events, active; - int handled = 0; - - pr_debug("m32r_pcc: pcc_interrupt(%d)\n", irq); - - for (j = 0; j < 20; j++) { - active = 0; - for (i = 0; i < pcc_sockets; i++) { - if ((socket[i].cs_irq != irq) && - (socket[i].socket.pci_irq != irq)) - continue; - handled = 1; - irc = pcc_get(i, PCIRC); - irc >>=16; - pr_debug("m32r_pcc: interrupt: socket %d pcirc 0x%02x ", - i, irc); - if (!irc) - continue; - - events = (irc) ? SS_DETECT : 0; - events |= (pcc_get(i,PCCR) & PCCR_PCEN) ? SS_READY : 0; - pr_debug("m32r_pcc: event 0x%02x\n", events); - - if (events) - pcmcia_parse_events(&socket[i].socket, events); - - active |= events; - active = 0; - } - if (!active) break; - } - if (j == 20) - printk(KERN_NOTICE "m32r-pcc: infinite loop in interrupt handler\n"); - - pr_debug("m32r_pcc: interrupt done\n"); - - return IRQ_RETVAL(handled); -} /* pcc_interrupt */ - -static void pcc_interrupt_wrapper(struct timer_list *unused) -{ - pcc_interrupt(0, NULL); - poll_timer.expires = jiffies + poll_interval; - add_timer(&poll_timer); -} - -/*====================================================================*/ - -static int _pcc_get_status(u_short sock, u_int *value) -{ - u_int status; - - status = pcc_get(sock,PCIRC); - *value = ((status & PCIRC_CDIN1) && (status & PCIRC_CDIN2)) - ? SS_DETECT : 0; - - status = pcc_get(sock,PCCR); - -#if 0 - *value |= (status & PCCR_PCEN) ? SS_READY : 0; -#else - *value |= SS_READY; /* XXX: always */ -#endif - - status = pcc_get(sock,PCCSIGCR); - *value |= (status & PCCSIGCR_VEN) ? SS_POWERON : 0; - - pr_debug("m32r_pcc: GetStatus(%d) = %#4.4x\n", sock, *value); - return 0; -} /* _get_status */ - -/*====================================================================*/ - -static int _pcc_set_socket(u_short sock, socket_state_t *state) -{ - u_long reg = 0; - - pr_debug("m32r_pcc: SetSocket(%d, flags %#3.3x, Vcc %d, Vpp %d, " - "io_irq %d, csc_mask %#2.2x)", sock, state->flags, - state->Vcc, state->Vpp, state->io_irq, state->csc_mask); - - if (state->Vcc) { - /* - * 5V only - */ - if (state->Vcc == 50) { - reg |= PCCSIGCR_VEN; - } else { - return -EINVAL; - } - } - - if (state->flags & SS_RESET) { - pr_debug("m32r_pcc: :RESET\n"); - reg |= PCCSIGCR_CRST; - } - if (state->flags & SS_OUTPUT_ENA){ - pr_debug("m32r_pcc: :OUTPUT_ENA\n"); - /* bit clear */ - } else { - reg |= PCCSIGCR_SEN; - } - - pcc_set(sock,PCCSIGCR,reg); - - if(state->flags & SS_IOCARD){ - pr_debug("m32r_pcc: :IOCARD"); - } - if (state->flags & SS_PWR_AUTO) { - pr_debug("m32r_pcc: :PWR_AUTO"); - } - if (state->csc_mask & SS_DETECT) - pr_debug("m32r_pcc: :csc-SS_DETECT"); - if (state->flags & SS_IOCARD) { - if (state->csc_mask & SS_STSCHG) - pr_debug("m32r_pcc: :STSCHG"); - } else { - if (state->csc_mask & SS_BATDEAD) - pr_debug("m32r_pcc: :BATDEAD"); - if (state->csc_mask & SS_BATWARN) - pr_debug("m32r_pcc: :BATWARN"); - if (state->csc_mask & SS_READY) - pr_debug("m32r_pcc: :READY"); - } - pr_debug("m32r_pcc: \n"); - return 0; -} /* _set_socket */ - -/*====================================================================*/ - -static int _pcc_set_io_map(u_short sock, struct pccard_io_map *io) -{ - u_char map; - - pr_debug("m32r_pcc: SetIOMap(%d, %d, %#2.2x, %d ns, " - "%#llx-%#llx)\n", sock, io->map, io->flags, - io->speed, (unsigned long long)io->start, - (unsigned long long)io->stop); - map = io->map; - - return 0; -} /* _set_io_map */ - -/*====================================================================*/ - -static int _pcc_set_mem_map(u_short sock, struct pccard_mem_map *mem) -{ - - u_char map = mem->map; - u_long mode; - u_long addr; - pcc_socket_t *t = &socket[sock]; -#ifdef CHAOS_PCC_DEBUG -#if 0 - pcc_as_t last = t->current_space; -#endif -#endif - - pr_debug("m32r_pcc: SetMemMap(%d, %d, %#2.2x, %d ns, " - "%#llx, %#x)\n", sock, map, mem->flags, - mem->speed, (unsigned long long)mem->static_start, - mem->card_start); - - /* - * sanity check - */ - if ((map > MAX_WIN) || (mem->card_start > 0x3ffffff)){ - return -EINVAL; - } - - /* - * de-activate - */ - if ((mem->flags & MAP_ACTIVE) == 0) { - t->current_space = as_none; - return 0; - } - - /* - * Disable first - */ - pcc_set(sock, PCCR, 0); - - /* - * Set mode - */ - if (mem->flags & MAP_ATTRIB) { - mode = PCMOD_AS_ATTRIB | PCMOD_CBSZ; - t->current_space = as_attr; - } else { - mode = 0; /* common memory */ - t->current_space = as_comm; - } - pcc_set(sock, PCMOD, mode); - - /* - * Set address - */ - addr = t->mapaddr + (mem->card_start & M32R_PCC_MAPMASK); - pcc_set(sock, PCADR, addr); - - mem->static_start = addr + mem->card_start; - - /* - * Enable again - */ - pcc_set(sock, PCCR, 1); - -#ifdef CHAOS_PCC_DEBUG -#if 0 - if (last != as_attr) { -#else - if (1) { -#endif - dummy_readbuf = *(u_char *)(addr + KSEG1); - } -#endif - - return 0; - -} /* _set_mem_map */ - -#if 0 /* driver model ordering issue */ -/*====================================================================== - - Routines for accessing socket information and register dumps via - /proc/bus/pccard/... - -======================================================================*/ - -static ssize_t show_info(struct class_device *class_dev, char *buf) -{ - pcc_socket_t *s = container_of(class_dev, struct pcc_socket, - socket.dev); - - return sprintf(buf, "type: %s\nbase addr: 0x%08lx\n", - pcc[s->type].name, s->base); -} - -static ssize_t show_exca(struct class_device *class_dev, char *buf) -{ - /* FIXME */ - - return 0; -} - -static CLASS_DEVICE_ATTR(info, S_IRUGO, show_info, NULL); -static CLASS_DEVICE_ATTR(exca, S_IRUGO, show_exca, NULL); -#endif - -/*====================================================================*/ - -/* this is horribly ugly... proper locking needs to be done here at - * some time... */ -#define LOCKED(x) do { \ - int retval; \ - unsigned long flags; \ - spin_lock_irqsave(&pcc_lock, flags); \ - retval = x; \ - spin_unlock_irqrestore(&pcc_lock, flags); \ - return retval; \ -} while (0) - - -static int pcc_get_status(struct pcmcia_socket *s, u_int *value) -{ - unsigned int sock = container_of(s, struct pcc_socket, socket)->number; - - if (socket[sock].flags & IS_ALIVE) { - *value = 0; - return -EINVAL; - } - LOCKED(_pcc_get_status(sock, value)); -} - -static int pcc_set_socket(struct pcmcia_socket *s, socket_state_t *state) -{ - unsigned int sock = container_of(s, struct pcc_socket, socket)->number; - - if (socket[sock].flags & IS_ALIVE) - return -EINVAL; - - LOCKED(_pcc_set_socket(sock, state)); -} - -static int pcc_set_io_map(struct pcmcia_socket *s, struct pccard_io_map *io) -{ - unsigned int sock = container_of(s, struct pcc_socket, socket)->number; - - if (socket[sock].flags & IS_ALIVE) - return -EINVAL; - LOCKED(_pcc_set_io_map(sock, io)); -} - -static int pcc_set_mem_map(struct pcmcia_socket *s, struct pccard_mem_map *mem) -{ - unsigned int sock = container_of(s, struct pcc_socket, socket)->number; - - if (socket[sock].flags & IS_ALIVE) - return -EINVAL; - LOCKED(_pcc_set_mem_map(sock, mem)); -} - -static int pcc_init(struct pcmcia_socket *s) -{ - pr_debug("m32r_pcc: init call\n"); - return 0; -} - -static struct pccard_operations pcc_operations = { - .init = pcc_init, - .get_status = pcc_get_status, - .set_socket = pcc_set_socket, - .set_io_map = pcc_set_io_map, - .set_mem_map = pcc_set_mem_map, -}; - -/*====================================================================*/ - -static struct platform_driver pcc_driver = { - .driver = { - .name = "pcc", - }, -}; - -static struct platform_device pcc_device = { - .name = "pcc", - .id = 0, -}; - -/*====================================================================*/ - -static int __init init_m32r_pcc(void) -{ - int i, ret; - - ret = platform_driver_register(&pcc_driver); - if (ret) - return ret; - - ret = platform_device_register(&pcc_device); - if (ret) - goto unreg_driv; - - printk(KERN_INFO "m32r PCC probe:\n"); - - pcc_sockets = 0; - - ret = add_pcc_socket(M32R_PCC0_BASE, PCC0_IRQ, M32R_PCC0_MAPBASE, - 0x1000); - if (ret) - goto unreg_dev; - -#ifdef CONFIG_M32RPCC_SLOT2 - ret = add_pcc_socket(M32R_PCC1_BASE, PCC1_IRQ, M32R_PCC1_MAPBASE, - 0x2000); - if (ret) - goto unreg_dev; -#endif - - if (pcc_sockets == 0) { - printk("socket is not found.\n"); - ret = -ENODEV; - goto unreg_dev; - } - - /* Set up interrupt handler(s) */ - - for (i = 0 ; i < pcc_sockets ; i++) { - socket[i].socket.dev.parent = &pcc_device.dev; - socket[i].socket.ops = &pcc_operations; - socket[i].socket.resource_ops = &pccard_static_ops; - socket[i].socket.owner = THIS_MODULE; - socket[i].number = i; - ret = pcmcia_register_socket(&socket[i].socket); - if (!ret) - socket[i].flags |= IS_REGISTERED; - } - - /* Finally, schedule a polling interrupt */ - if (poll_interval != 0) { - timer_setup(&poll_timer, pcc_interrupt_wrapper, 0); - poll_timer.expires = jiffies + poll_interval; - add_timer(&poll_timer); - } - - return 0; - -unreg_dev: - platform_device_unregister(&pcc_device); -unreg_driv: - platform_driver_unregister(&pcc_driver); - return ret; -} /* init_m32r_pcc */ - -static void __exit exit_m32r_pcc(void) -{ - int i; - - for (i = 0; i < pcc_sockets; i++) - if (socket[i].flags & IS_REGISTERED) - pcmcia_unregister_socket(&socket[i].socket); - - platform_device_unregister(&pcc_device); - if (poll_interval != 0) - del_timer_sync(&poll_timer); - - platform_driver_unregister(&pcc_driver); -} /* exit_m32r_pcc */ - -module_init(init_m32r_pcc); -module_exit(exit_m32r_pcc); -MODULE_LICENSE("Dual MPL/GPL"); -/*====================================================================*/ |