2 * drivers/pcmcia/m32r_cfc.c
4 * Device driver for the CFC functionality of M32R.
6 * Copyright (c) 2001, 2002, 2003, 2004
7 * Hiroyuki Kondo, Naoto Sugai, Hayato Fujiwara
10 #include <linux/module.h>
11 #include <linux/moduleparam.h>
12 #include <linux/init.h>
13 #include <linux/types.h>
14 #include <linux/fcntl.h>
15 #include <linux/string.h>
16 #include <linux/kernel.h>
17 #include <linux/errno.h>
18 #include <linux/timer.h>
19 #include <linux/slab.h>
20 #include <linux/ioport.h>
21 #include <linux/delay.h>
22 #include <linux/workqueue.h>
23 #include <linux/interrupt.h>
24 #include <linux/platform_device.h>
25 #include <linux/bitops.h>
28 #include <asm/system.h>
30 #include <pcmcia/cs_types.h>
31 #include <pcmcia/ss.h>
32 #include <pcmcia/cs.h>
34 #undef MAX_IO_WIN /* FIXME */
36 #undef MAX_WIN /* FIXME */
42 static int m32r_cfc_debug;
43 module_param(m32r_cfc_debug, int, 0644);
44 #define debug(lvl, fmt, arg...) do { \
45 if (m32r_cfc_debug > (lvl)) \
46 printk(KERN_DEBUG "m32r_cfc: " fmt , ## arg); \
49 #define debug(n, args...) do { } while (0)
52 /* Poll status interval -- 0 means default to interrupt */
53 static int poll_interval = 0;
55 typedef enum pcc_space { as_none = 0, as_comm, as_attr, as_io } pcc_as_t;
57 typedef struct pcc_socket {
59 struct pcmcia_socket socket;
63 u_long base; /* PCC register base */
64 u_char cs_irq1, cs_irq2, intr;
65 pccard_io_map io_map[MAX_IO_WIN];
66 pccard_mem_map mem_map[MAX_WIN];
69 pcc_as_t current_space;
72 struct proc_dir_entry *proc;
76 static int pcc_sockets = 0;
77 static pcc_socket_t socket[M32R_MAX_PCC] = {
81 /*====================================================================*/
83 static unsigned int pcc_get(u_short, unsigned int);
84 static void pcc_set(u_short, unsigned int , unsigned int );
86 static DEFINE_SPINLOCK(pcc_lock);
88 #if !defined(CONFIG_PLAT_USRV)
89 static inline u_long pcc_port2addr(unsigned long port, int size) {
93 if (size == 1) { /* byte access */
96 addr = CFC_IO_MAPBASE_BYTE - CFC_IOPORT_BASE + odd + port;
98 addr = CFC_IO_MAPBASE_WORD - CFC_IOPORT_BASE + port;
102 #else /* CONFIG_PLAT_USRV */
103 static inline u_long pcc_port2addr(unsigned long port, int size) {
105 u_long addr = ((port - CFC_IOPORT_BASE) & 0xf000) << 8;
107 if (size == 1) { /* byte access */
111 addr = (addr | CFC_IO_MAPBASE_BYTE) + odd + (port & 0xfff);
112 } else if (size == 2) /* word access */
113 addr = (addr | CFC_IO_MAPBASE_WORD) + (port & 0xfff);
117 #endif /* CONFIG_PLAT_USRV */
119 void pcc_ioread_byte(int sock, unsigned long port, void *buf, size_t size,
120 size_t nmemb, int flag)
123 unsigned char *bp = (unsigned char *)buf;
126 debug(3, "m32r_cfc: pcc_ioread_byte: sock=%d, port=%#lx, buf=%p, "
127 "size=%u, nmemb=%d, flag=%d\n",
128 sock, port, buf, size, nmemb, flag);
130 addr = pcc_port2addr(port, 1);
132 printk("m32r_cfc:ioread_byte null port :%#lx\n",port);
135 debug(3, "m32r_cfc: pcc_ioread_byte: addr=%#lx\n", addr);
137 spin_lock_irqsave(&pcc_lock, flags);
141 spin_unlock_irqrestore(&pcc_lock, flags);
144 void pcc_ioread_word(int sock, unsigned long port, void *buf, size_t size,
145 size_t nmemb, int flag)
148 unsigned short *bp = (unsigned short *)buf;
151 debug(3, "m32r_cfc: pcc_ioread_word: sock=%d, port=%#lx, "
152 "buf=%p, size=%u, nmemb=%d, flag=%d\n",
153 sock, port, buf, size, nmemb, flag);
156 printk("m32r_cfc: ioread_word :illigal size %u : %#lx\n", size,
159 printk("m32r_cfc: ioread_word :insw \n");
161 addr = pcc_port2addr(port, 2);
163 printk("m32r_cfc:ioread_word null port :%#lx\n",port);
166 debug(3, "m32r_cfc: pcc_ioread_word: addr=%#lx\n", addr);
168 spin_lock_irqsave(&pcc_lock, flags);
172 spin_unlock_irqrestore(&pcc_lock, flags);
175 void pcc_iowrite_byte(int sock, unsigned long port, void *buf, size_t size,
176 size_t nmemb, int flag)
179 unsigned char *bp = (unsigned char *)buf;
182 debug(3, "m32r_cfc: pcc_iowrite_byte: sock=%d, port=%#lx, "
183 "buf=%p, size=%u, nmemb=%d, flag=%d\n",
184 sock, port, buf, size, nmemb, flag);
187 addr = pcc_port2addr(port, 1);
189 printk("m32r_cfc:iowrite_byte null port:%#lx\n",port);
192 debug(3, "m32r_cfc: pcc_iowrite_byte: addr=%#lx\n", addr);
194 spin_lock_irqsave(&pcc_lock, flags);
197 spin_unlock_irqrestore(&pcc_lock, flags);
200 void pcc_iowrite_word(int sock, unsigned long port, void *buf, size_t size,
201 size_t nmemb, int flag)
204 unsigned short *bp = (unsigned short *)buf;
207 debug(3, "m32r_cfc: pcc_iowrite_word: sock=%d, port=%#lx, "
208 "buf=%p, size=%u, nmemb=%d, flag=%d\n",
209 sock, port, buf, size, nmemb, flag);
212 printk("m32r_cfc: iowrite_word :illigal size %u : %#lx\n",
215 printk("m32r_cfc: iowrite_word :outsw \n");
217 addr = pcc_port2addr(port, 2);
219 printk("m32r_cfc:iowrite_word null addr :%#lx\n",port);
224 printk("m32r_cfc:iowrite_word port addr (%#lx):%#lx\n", port,
229 debug(3, "m32r_cfc: pcc_iowrite_word: addr=%#lx\n", addr);
231 spin_lock_irqsave(&pcc_lock, flags);
234 spin_unlock_irqrestore(&pcc_lock, flags);
237 /*====================================================================*/
239 #define IS_REGISTERED 0x2000
240 #define IS_ALIVE 0x8000
242 typedef struct pcc_t {
247 static pcc_t pcc[] = {
248 #if !defined(CONFIG_PLAT_USRV)
249 { "m32r_cfc", 0 }, { "", 0 },
250 #else /* CONFIG_PLAT_USRV */
251 { "m32r_cfc", 0 }, { "m32r_cfc", 0 }, { "m32r_cfc", 0 },
252 { "m32r_cfc", 0 }, { "m32r_cfc", 0 }, { "", 0 },
253 #endif /* CONFIG_PLAT_USRV */
256 static irqreturn_t pcc_interrupt(int, void *);
258 /*====================================================================*/
260 static struct timer_list poll_timer;
262 static unsigned int pcc_get(u_short sock, unsigned int reg)
264 unsigned int val = inw(reg);
265 debug(3, "m32r_cfc: pcc_get: reg(0x%08x)=0x%04x\n", reg, val);
270 static void pcc_set(u_short sock, unsigned int reg, unsigned int data)
273 debug(3, "m32r_cfc: pcc_set: reg(0x%08x)=0x%04x\n", reg, data);
276 /*======================================================================
278 See if a card is present, powered up, in IO mode, and already
279 bound to a (non PC Card) Linux driver. We leave these alone.
281 We make an exception for cards that seem to be serial devices.
283 ======================================================================*/
285 static int __init is_alive(u_short sock)
289 debug(3, "m32r_cfc: is_alive:\n");
292 stat = pcc_get(sock, (unsigned int)PLD_CFSTS);
295 printk("Card is detected at socket %d : stat = 0x%08x\n", sock, stat);
296 debug(3, "m32r_cfc: is_alive: sock stat is 0x%04x\n", stat);
301 static void add_pcc_socket(ulong base, int irq, ulong mapaddr,
304 pcc_socket_t *t = &socket[pcc_sockets];
306 debug(3, "m32r_cfc: add_pcc_socket: base=%#lx, irq=%d, "
307 "mapaddr=%#lx, ioaddr=%08x\n",
308 base, irq, mapaddr, ioaddr);
312 t->mapaddr = mapaddr;
313 #if !defined(CONFIG_PLAT_USRV)
316 t->cs_irq1 = irq; // insert irq
317 t->cs_irq2 = irq + 1; // eject irq
318 #else /* CONFIG_PLAT_USRV */
321 t->cs_irq1 = 0; // insert irq
322 t->cs_irq2 = 0; // eject irq
323 #endif /* CONFIG_PLAT_USRV */
325 if (is_alive(pcc_sockets))
326 t->flags |= IS_ALIVE;
329 #if !defined(CONFIG_PLAT_USRV)
330 request_region((unsigned int)PLD_CFRSTCR, 0x20, "m32r_cfc");
331 #else /* CONFIG_PLAT_USRV */
333 unsigned int reg_base;
335 reg_base = (unsigned int)PLD_CFRSTCR;
336 reg_base |= pcc_sockets << 8;
337 request_region(reg_base, 0x20, "m32r_cfc");
339 #endif /* CONFIG_PLAT_USRV */
340 printk(KERN_INFO " %s ", pcc[pcc_sockets].name);
341 printk("pcc at 0x%08lx\n", t->base);
343 /* Update socket interrupt information, capabilities */
344 t->socket.features |= (SS_CAP_PCCARD | SS_CAP_STATIC_MAP);
345 t->socket.map_size = M32R_PCC_MAPSIZE;
346 t->socket.io_offset = ioaddr; /* use for io access offset */
347 t->socket.irq_mask = 0;
348 #if !defined(CONFIG_PLAT_USRV)
349 t->socket.pci_irq = PLD_IRQ_CFIREQ ; /* card interrupt */
350 #else /* CONFIG_PLAT_USRV */
351 t->socket.pci_irq = PLD_IRQ_CF0 + pcc_sockets;
352 #endif /* CONFIG_PLAT_USRV */
354 #ifndef CONFIG_PLAT_USRV
355 /* insert interrupt */
356 request_irq(irq, pcc_interrupt, 0, "m32r_cfc", pcc_interrupt);
357 #ifndef CONFIG_PLAT_MAPPI3
358 /* eject interrupt */
359 request_irq(irq+1, pcc_interrupt, 0, "m32r_cfc", pcc_interrupt);
361 debug(3, "m32r_cfc: enable CFMSK, RDYSEL\n");
362 pcc_set(pcc_sockets, (unsigned int)PLD_CFIMASK, 0x01);
363 #endif /* CONFIG_PLAT_USRV */
364 #if defined(CONFIG_PLAT_M32700UT) || defined(CONFIG_PLAT_USRV) || defined(CONFIG_PLAT_OPSPUT)
365 pcc_set(pcc_sockets, (unsigned int)PLD_CFCR1, 0x0200);
373 /*====================================================================*/
375 static irqreturn_t pcc_interrupt(int irq, void *dev)
381 debug(3, "m32r_cfc: pcc_interrupt: irq=%d, dev=%p\n", irq, dev);
382 for (i = 0; i < pcc_sockets; i++) {
383 if (socket[i].cs_irq1 != irq && socket[i].cs_irq2 != irq)
387 debug(3, "m32r_cfc: pcc_interrupt: socket %d irq 0x%02x ",
389 events |= SS_DETECT; /* insert or eject */
391 pcmcia_parse_events(&socket[i].socket, events);
393 debug(3, "m32r_cfc: pcc_interrupt: done\n");
395 return IRQ_RETVAL(handled);
396 } /* pcc_interrupt */
398 static void pcc_interrupt_wrapper(u_long data)
400 debug(3, "m32r_cfc: pcc_interrupt_wrapper:\n");
401 pcc_interrupt(0, NULL);
402 init_timer(&poll_timer);
403 poll_timer.expires = jiffies + poll_interval;
404 add_timer(&poll_timer);
407 /*====================================================================*/
409 static int _pcc_get_status(u_short sock, u_int *value)
413 debug(3, "m32r_cfc: _pcc_get_status:\n");
414 status = pcc_get(sock, (unsigned int)PLD_CFSTS);
415 *value = (status) ? SS_DETECT : 0;
416 debug(3, "m32r_cfc: _pcc_get_status: status=0x%08x\n", status);
418 #if defined(CONFIG_PLAT_M32700UT) || defined(CONFIG_PLAT_USRV) || defined(CONFIG_PLAT_OPSPUT)
420 /* enable CF power */
421 status = inw((unsigned int)PLD_CPCR);
422 if (!(status & PLD_CPCR_CF)) {
423 debug(3, "m32r_cfc: _pcc_get_status: "
424 "power on (CPCR=0x%08x)\n", status);
425 status |= PLD_CPCR_CF;
426 outw(status, (unsigned int)PLD_CPCR);
429 *value |= SS_POWERON;
431 pcc_set(sock, (unsigned int)PLD_CFBUFCR,0);/* enable buffer */
434 *value |= SS_READY; /* always ready */
437 /* disable CF power */
438 status = inw((unsigned int)PLD_CPCR);
439 status &= ~PLD_CPCR_CF;
440 outw(status, (unsigned int)PLD_CPCR);
442 debug(3, "m32r_cfc: _pcc_get_status: "
443 "power off (CPCR=0x%08x)\n", status);
445 #elif defined(CONFIG_PLAT_MAPPI2) || defined(CONFIG_PLAT_MAPPI3)
447 status = pcc_get(sock, (unsigned int)PLD_CPCR);
448 if (status == 0) { /* power off */
449 pcc_set(sock, (unsigned int)PLD_CPCR, 1);
450 pcc_set(sock, (unsigned int)PLD_CFBUFCR,0); /* force buffer off for ZA-36 */
453 *value |= SS_POWERON;
455 pcc_set(sock, (unsigned int)PLD_CFBUFCR,0);
457 pcc_set(sock, (unsigned int)PLD_CFRSTCR, 0x0101);
458 udelay(25); /* for IDE reset */
459 pcc_set(sock, (unsigned int)PLD_CFRSTCR, 0x0100);
460 mdelay(2); /* for IDE reset */
465 /* disable CF power */
466 pcc_set(sock, (unsigned int)PLD_CPCR, 0);
468 debug(3, "m32r_cfc: _pcc_get_status: "
469 "power off (CPCR=0x%08x)\n", status);
472 #error no platform configuration
474 debug(3, "m32r_cfc: _pcc_get_status: GetStatus(%d) = %#4.4x\n",
479 /*====================================================================*/
481 static int _pcc_set_socket(u_short sock, socket_state_t *state)
483 debug(3, "m32r_cfc: SetSocket(%d, flags %#3.3x, Vcc %d, Vpp %d, "
484 "io_irq %d, csc_mask %#2.2x)\n", sock, state->flags,
485 state->Vcc, state->Vpp, state->io_irq, state->csc_mask);
487 #if defined(CONFIG_PLAT_M32700UT) || defined(CONFIG_PLAT_USRV) || defined(CONFIG_PLAT_OPSPUT) || defined(CONFIG_PLAT_MAPPI2) || defined(CONFIG_PLAT_MAPPI3)
489 if ((state->Vcc != 50) && (state->Vcc != 33))
491 /* accept 5V and 3.3V */
494 if (state->flags & SS_RESET) {
495 debug(3, ":RESET\n");
496 pcc_set(sock,(unsigned int)PLD_CFRSTCR,0x101);
498 pcc_set(sock,(unsigned int)PLD_CFRSTCR,0x100);
500 if (state->flags & SS_OUTPUT_ENA){
501 debug(3, ":OUTPUT_ENA\n");
503 pcc_set(sock,(unsigned int)PLD_CFBUFCR,0);
505 pcc_set(sock,(unsigned int)PLD_CFBUFCR,1);
509 if(state->flags & SS_IOCARD){
512 if (state->flags & SS_PWR_AUTO) {
513 debug(3, ":PWR_AUTO");
515 if (state->csc_mask & SS_DETECT)
516 debug(3, ":csc-SS_DETECT");
517 if (state->flags & SS_IOCARD) {
518 if (state->csc_mask & SS_STSCHG)
521 if (state->csc_mask & SS_BATDEAD)
522 debug(3, ":BATDEAD");
523 if (state->csc_mask & SS_BATWARN)
524 debug(3, ":BATWARN");
525 if (state->csc_mask & SS_READY)
533 /*====================================================================*/
535 static int _pcc_set_io_map(u_short sock, struct pccard_io_map *io)
539 debug(3, "m32r_cfc: SetIOMap(%d, %d, %#2.2x, %d ns, "
540 "%#lx-%#lx)\n", sock, io->map, io->flags,
541 io->speed, io->start, io->stop);
547 /*====================================================================*/
549 static int _pcc_set_mem_map(u_short sock, struct pccard_mem_map *mem)
552 u_char map = mem->map;
554 pcc_socket_t *t = &socket[sock];
556 debug(3, "m32r_cfc: SetMemMap(%d, %d, %#2.2x, %d ns, "
557 "%#lx, %#x)\n", sock, map, mem->flags,
558 mem->speed, mem->static_start, mem->card_start);
563 if ((map > MAX_WIN) || (mem->card_start > 0x3ffffff)){
570 if ((mem->flags & MAP_ACTIVE) == 0) {
571 t->current_space = as_none;
578 if (mem->flags & MAP_ATTRIB) {
579 t->current_space = as_attr;
581 t->current_space = as_comm;
587 addr = t->mapaddr + (mem->card_start & M32R_PCC_MAPMASK);
588 mem->static_start = addr + mem->card_start;
594 #if 0 /* driver model ordering issue */
595 /*======================================================================
597 Routines for accessing socket information and register dumps via
600 ======================================================================*/
602 static ssize_t show_info(struct class_device *class_dev, char *buf)
604 pcc_socket_t *s = container_of(class_dev, struct pcc_socket,
607 return sprintf(buf, "type: %s\nbase addr: 0x%08lx\n",
608 pcc[s->type].name, s->base);
611 static ssize_t show_exca(struct class_device *class_dev, char *buf)
618 static CLASS_DEVICE_ATTR(info, S_IRUGO, show_info, NULL);
619 static CLASS_DEVICE_ATTR(exca, S_IRUGO, show_exca, NULL);
622 /*====================================================================*/
624 /* this is horribly ugly... proper locking needs to be done here at
626 #define LOCKED(x) do { \
628 unsigned long flags; \
629 spin_lock_irqsave(&pcc_lock, flags); \
631 spin_unlock_irqrestore(&pcc_lock, flags); \
636 static int pcc_get_status(struct pcmcia_socket *s, u_int *value)
638 unsigned int sock = container_of(s, struct pcc_socket, socket)->number;
640 if (socket[sock].flags & IS_ALIVE) {
641 debug(3, "m32r_cfc: pcc_get_status: sock(%d) -EINVAL\n", sock);
645 debug(3, "m32r_cfc: pcc_get_status: sock(%d)\n", sock);
646 LOCKED(_pcc_get_status(sock, value));
649 static int pcc_set_socket(struct pcmcia_socket *s, socket_state_t *state)
651 unsigned int sock = container_of(s, struct pcc_socket, socket)->number;
653 if (socket[sock].flags & IS_ALIVE) {
654 debug(3, "m32r_cfc: pcc_set_socket: sock(%d) -EINVAL\n", sock);
657 debug(3, "m32r_cfc: pcc_set_socket: sock(%d)\n", sock);
658 LOCKED(_pcc_set_socket(sock, state));
661 static int pcc_set_io_map(struct pcmcia_socket *s, struct pccard_io_map *io)
663 unsigned int sock = container_of(s, struct pcc_socket, socket)->number;
665 if (socket[sock].flags & IS_ALIVE) {
666 debug(3, "m32r_cfc: pcc_set_io_map: sock(%d) -EINVAL\n", sock);
669 debug(3, "m32r_cfc: pcc_set_io_map: sock(%d)\n", sock);
670 LOCKED(_pcc_set_io_map(sock, io));
673 static int pcc_set_mem_map(struct pcmcia_socket *s, struct pccard_mem_map *mem)
675 unsigned int sock = container_of(s, struct pcc_socket, socket)->number;
677 if (socket[sock].flags & IS_ALIVE) {
678 debug(3, "m32r_cfc: pcc_set_mem_map: sock(%d) -EINVAL\n", sock);
681 debug(3, "m32r_cfc: pcc_set_mem_map: sock(%d)\n", sock);
682 LOCKED(_pcc_set_mem_map(sock, mem));
685 static int pcc_init(struct pcmcia_socket *s)
687 debug(3, "m32r_cfc: pcc_init()\n");
691 static struct pccard_operations pcc_operations = {
693 .get_status = pcc_get_status,
694 .set_socket = pcc_set_socket,
695 .set_io_map = pcc_set_io_map,
696 .set_mem_map = pcc_set_mem_map,
699 /*====================================================================*/
701 static struct device_driver pcc_driver = {
703 .bus = &platform_bus_type,
704 .suspend = pcmcia_socket_dev_suspend,
705 .resume = pcmcia_socket_dev_resume,
708 static struct platform_device pcc_device = {
713 /*====================================================================*/
715 static int __init init_m32r_pcc(void)
719 ret = driver_register(&pcc_driver);
723 ret = platform_device_register(&pcc_device);
725 driver_unregister(&pcc_driver);
729 #if defined(CONFIG_PLAT_MAPPI2) || defined(CONFIG_PLAT_MAPPI3)
730 pcc_set(0, (unsigned int)PLD_CFCR0, 0x0f0f);
731 pcc_set(0, (unsigned int)PLD_CFCR1, 0x0200);
736 #if !defined(CONFIG_PLAT_USRV)
737 add_pcc_socket(M32R_PCC0_BASE, PLD_IRQ_CFC_INSERT, CFC_ATTR_MAPBASE,
739 #else /* CONFIG_PLAT_USRV */
744 for (i = 0 ; i < M32R_MAX_PCC ; i++) {
745 base = (ulong)PLD_CFRSTCR;
746 base = base | (i << 8);
747 ioaddr = (i + 1) << 12;
748 mapaddr = CFC_ATTR_MAPBASE | (i << 20);
749 add_pcc_socket(base, 0, mapaddr, ioaddr);
752 #endif /* CONFIG_PLAT_USRV */
754 if (pcc_sockets == 0) {
755 printk("socket is not found.\n");
756 platform_device_unregister(&pcc_device);
757 driver_unregister(&pcc_driver);
761 /* Set up interrupt handler(s) */
763 for (i = 0 ; i < pcc_sockets ; i++) {
764 socket[i].socket.dev.parent = &pcc_device.dev;
765 socket[i].socket.ops = &pcc_operations;
766 socket[i].socket.resource_ops = &pccard_nonstatic_ops;
767 socket[i].socket.owner = THIS_MODULE;
768 socket[i].number = i;
769 ret = pcmcia_register_socket(&socket[i].socket);
771 socket[i].flags |= IS_REGISTERED;
773 #if 0 /* driver model ordering issue */
774 class_device_create_file(&socket[i].socket.dev,
775 &class_device_attr_info);
776 class_device_create_file(&socket[i].socket.dev,
777 &class_device_attr_exca);
781 /* Finally, schedule a polling interrupt */
782 if (poll_interval != 0) {
783 poll_timer.function = pcc_interrupt_wrapper;
785 init_timer(&poll_timer);
786 poll_timer.expires = jiffies + poll_interval;
787 add_timer(&poll_timer);
791 } /* init_m32r_pcc */
793 static void __exit exit_m32r_pcc(void)
797 for (i = 0; i < pcc_sockets; i++)
798 if (socket[i].flags & IS_REGISTERED)
799 pcmcia_unregister_socket(&socket[i].socket);
801 platform_device_unregister(&pcc_device);
802 if (poll_interval != 0)
803 del_timer_sync(&poll_timer);
805 driver_unregister(&pcc_driver);
806 } /* exit_m32r_pcc */
808 module_init(init_m32r_pcc);
809 module_exit(exit_m32r_pcc);
810 MODULE_LICENSE("Dual MPL/GPL");
811 /*====================================================================*/