2 * PCMCIA 16-bit resource management functions
4 * The initial developer of the original code is David A. Hinds
5 * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
6 * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
8 * Copyright (C) 1999 David A. Hinds
9 * Copyright (C) 2004-2005 Dominik Brodowski
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
17 #include <linux/module.h>
18 #include <linux/kernel.h>
19 #include <linux/interrupt.h>
20 #include <linux/delay.h>
21 #include <linux/pci.h>
22 #include <linux/device.h>
23 #include <linux/netdevice.h>
25 #include <pcmcia/cs_types.h>
26 #include <pcmcia/ss.h>
27 #include <pcmcia/cs.h>
28 #include <pcmcia/cistpl.h>
29 #include <pcmcia/cisreg.h>
30 #include <pcmcia/ds.h>
32 #include "cs_internal.h"
35 /* Access speed for IO windows */
37 module_param(io_speed, int, 0444);
40 #ifdef CONFIG_PCMCIA_PROBE
42 /* mask of IRQs already reserved by other cards, we should avoid using them */
43 static u8 pcmcia_used_irq[NR_IRQS];
46 static int pcmcia_adjust_io_region(struct resource *res, unsigned long start,
47 unsigned long end, struct pcmcia_socket *s)
49 if (s->resource_ops->adjust_io_region)
50 return s->resource_ops->adjust_io_region(res, start, end, s);
54 static struct resource *pcmcia_find_io_region(unsigned long base, int num,
56 struct pcmcia_socket *s)
58 if (s->resource_ops->find_io)
59 return s->resource_ops->find_io(base, num, align, s);
63 int pcmcia_validate_mem(struct pcmcia_socket *s)
65 if (s->resource_ops->validate_mem)
66 return s->resource_ops->validate_mem(s);
67 /* if there is no callback, we can assume that everything is OK */
71 struct resource *pcmcia_find_mem_region(u_long base, u_long num, u_long align,
72 int low, struct pcmcia_socket *s)
74 if (s->resource_ops->find_mem)
75 return s->resource_ops->find_mem(base, num, align, low, s);
82 * Special stuff for managing IO windows, because they are scarce
85 static int alloc_io_space(struct pcmcia_socket *s, u_int attr,
86 unsigned int *base, unsigned int num, u_int lines)
89 unsigned int try, align;
91 align = (*base) ? (lines ? 1<<lines : 0) : 1;
92 if (align && (align < num)) {
94 dev_dbg(&s->dev, "odd IO request: num %#x align %#x\n",
98 while (align && (align < num))
101 if (*base & ~(align-1)) {
102 dev_dbg(&s->dev, "odd IO request: base %#x align %#x\n",
106 if ((s->features & SS_CAP_STATIC_MAP) && s->io_offset) {
107 *base = s->io_offset | (*base & 0x0fff);
110 /* Check for an already-allocated window that must conflict with
111 * what was asked for. It is a hack because it does not catch all
112 * potential conflicts, just the most obvious ones.
114 for (i = 0; i < MAX_IO_WIN; i++)
115 if ((s->io[i].res) && *base &&
116 ((s->io[i].res->start & (align-1)) == *base))
118 for (i = 0; i < MAX_IO_WIN; i++) {
120 s->io[i].res = pcmcia_find_io_region(*base, num, align, s);
122 *base = s->io[i].res->start;
123 s->io[i].res->flags = (s->io[i].res->flags & ~IORESOURCE_BITS) | (attr & IORESOURCE_BITS);
124 s->io[i].InUse = num;
128 } else if ((s->io[i].res->flags & IORESOURCE_BITS) != (attr & IORESOURCE_BITS))
130 /* Try to extend top of window */
131 try = s->io[i].res->end + 1;
132 if ((*base == 0) || (*base == try))
133 if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start,
134 s->io[i].res->end + num, s) == 0) {
136 s->io[i].InUse += num;
139 /* Try to extend bottom of window */
140 try = s->io[i].res->start - num;
141 if ((*base == 0) || (*base == try))
142 if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start - num,
143 s->io[i].res->end, s) == 0) {
145 s->io[i].InUse += num;
149 return (i == MAX_IO_WIN);
150 } /* alloc_io_space */
153 static void release_io_space(struct pcmcia_socket *s, unsigned int base,
158 for (i = 0; i < MAX_IO_WIN; i++) {
161 if ((s->io[i].res->start <= base) &&
162 (s->io[i].res->end >= base+num-1)) {
163 s->io[i].InUse -= num;
164 /* Free the window if no one else is using it */
165 if (s->io[i].InUse == 0) {
166 release_resource(s->io[i].res);
172 } /* release_io_space */
175 /** pccard_access_configuration_register
177 * Access_configuration_register() reads and writes configuration
178 * registers in attribute memory. Memory window 0 is reserved for
179 * this and the tuple reading services.
182 int pcmcia_access_configuration_register(struct pcmcia_device *p_dev,
185 struct pcmcia_socket *s;
190 if (!p_dev || !p_dev->function_config)
195 mutex_lock(&s->ops_mutex);
196 c = p_dev->function_config;
198 if (!(c->state & CONFIG_LOCKED)) {
199 dev_dbg(&s->dev, "Configuration isnt't locked\n");
200 mutex_unlock(&s->ops_mutex);
204 addr = (c->ConfigBase + reg->Offset) >> 1;
205 mutex_unlock(&s->ops_mutex);
207 switch (reg->Action) {
209 pcmcia_read_cis_mem(s, 1, addr, 1, &val);
214 pcmcia_write_cis_mem(s, 1, addr, 1, &val);
217 dev_dbg(&s->dev, "Invalid conf register request\n");
222 } /* pcmcia_access_configuration_register */
223 EXPORT_SYMBOL(pcmcia_access_configuration_register);
226 int pcmcia_map_mem_page(struct pcmcia_device *p_dev, window_handle_t wh,
229 struct pcmcia_socket *s = p_dev->socket;
235 if (req->Page != 0) {
236 dev_dbg(&s->dev, "failure: requested page is zero\n");
239 mutex_lock(&s->ops_mutex);
240 s->win[wh].card_start = req->CardOffset;
241 ret = s->ops->set_mem_map(s, &s->win[wh]);
243 dev_warn(&s->dev, "failed to set_mem_map\n");
244 mutex_unlock(&s->ops_mutex);
246 } /* pcmcia_map_mem_page */
247 EXPORT_SYMBOL(pcmcia_map_mem_page);
250 /** pcmcia_modify_configuration
252 * Modify a locked socket configuration
254 int pcmcia_modify_configuration(struct pcmcia_device *p_dev,
257 struct pcmcia_socket *s;
263 mutex_lock(&s->ops_mutex);
264 c = p_dev->function_config;
266 if (!(s->state & SOCKET_PRESENT)) {
267 dev_dbg(&s->dev, "No card present\n");
271 if (!(c->state & CONFIG_LOCKED)) {
272 dev_dbg(&s->dev, "Configuration isnt't locked\n");
277 if (mod->Attributes & CONF_IRQ_CHANGE_VALID) {
278 if (mod->Attributes & CONF_ENABLE_IRQ) {
279 c->Attributes |= CONF_ENABLE_IRQ;
280 s->socket.io_irq = s->irq.AssignedIRQ;
282 c->Attributes &= ~CONF_ENABLE_IRQ;
283 s->socket.io_irq = 0;
285 s->ops->set_socket(s, &s->socket);
288 if (mod->Attributes & CONF_VCC_CHANGE_VALID) {
289 dev_dbg(&s->dev, "changing Vcc is not allowed at this time\n");
294 /* We only allow changing Vpp1 and Vpp2 to the same value */
295 if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) &&
296 (mod->Attributes & CONF_VPP2_CHANGE_VALID)) {
297 if (mod->Vpp1 != mod->Vpp2) {
298 dev_dbg(&s->dev, "Vpp1 and Vpp2 must be the same\n");
302 s->socket.Vpp = mod->Vpp1;
303 if (s->ops->set_socket(s, &s->socket)) {
304 dev_printk(KERN_WARNING, &s->dev,
305 "Unable to set VPP\n");
309 } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) ||
310 (mod->Attributes & CONF_VPP2_CHANGE_VALID)) {
311 dev_dbg(&s->dev, "changing Vcc is not allowed at this time\n");
316 if (mod->Attributes & CONF_IO_CHANGE_WIDTH) {
317 pccard_io_map io_off = { 0, 0, 0, 0, 1 };
321 io_on.speed = io_speed;
322 for (i = 0; i < MAX_IO_WIN; i++) {
328 io_on.flags = MAP_ACTIVE | IO_DATA_PATH_WIDTH_8;
329 io_on.start = s->io[i].res->start;
330 io_on.stop = s->io[i].res->end;
332 s->ops->set_io_map(s, &io_off);
334 s->ops->set_io_map(s, &io_on);
339 mutex_unlock(&s->ops_mutex);
342 } /* modify_configuration */
343 EXPORT_SYMBOL(pcmcia_modify_configuration);
346 int pcmcia_release_configuration(struct pcmcia_device *p_dev)
348 pccard_io_map io = { 0, 0, 0, 0, 1 };
349 struct pcmcia_socket *s = p_dev->socket;
353 mutex_lock(&s->ops_mutex);
354 c = p_dev->function_config;
355 if (p_dev->_locked) {
357 if (--(s->lock_count) == 0) {
358 s->socket.flags = SS_OUTPUT_ENA; /* Is this correct? */
360 s->socket.io_irq = 0;
361 s->ops->set_socket(s, &s->socket);
364 if (c->state & CONFIG_LOCKED) {
365 c->state &= ~CONFIG_LOCKED;
366 if (c->state & CONFIG_IO_REQ)
367 for (i = 0; i < MAX_IO_WIN; i++) {
371 if (s->io[i].Config != 0)
374 s->ops->set_io_map(s, &io);
377 mutex_unlock(&s->ops_mutex);
380 } /* pcmcia_release_configuration */
383 /** pcmcia_release_io
385 * Release_io() releases the I/O ranges allocated by a client. This
386 * may be invoked some time after a card ejection has already dumped
387 * the actual socket configuration, so if the client is "stale", we
388 * don't bother checking the port ranges against the current socket
391 static int pcmcia_release_io(struct pcmcia_device *p_dev, io_req_t *req)
393 struct pcmcia_socket *s = p_dev->socket;
397 mutex_lock(&s->ops_mutex);
398 c = p_dev->function_config;
405 if ((c->io.BasePort1 != req->BasePort1) ||
406 (c->io.NumPorts1 != req->NumPorts1) ||
407 (c->io.BasePort2 != req->BasePort2) ||
408 (c->io.NumPorts2 != req->NumPorts2))
411 c->state &= ~CONFIG_IO_REQ;
413 release_io_space(s, req->BasePort1, req->NumPorts1);
415 release_io_space(s, req->BasePort2, req->NumPorts2);
418 mutex_unlock(&s->ops_mutex);
421 } /* pcmcia_release_io */
424 static int pcmcia_release_irq(struct pcmcia_device *p_dev, irq_req_t *req)
426 struct pcmcia_socket *s = p_dev->socket;
430 mutex_lock(&s->ops_mutex);
432 c = p_dev->function_config;
439 if (c->state & CONFIG_LOCKED)
442 if (c->irq.Attributes != req->Attributes) {
443 dev_dbg(&s->dev, "IRQ attributes must match assigned ones\n");
446 if (s->irq.AssignedIRQ != req->AssignedIRQ) {
447 dev_dbg(&s->dev, "IRQ must match assigned one\n");
450 if (--s->irq.Config == 0) {
451 c->state &= ~CONFIG_IRQ_REQ;
452 s->irq.AssignedIRQ = 0;
456 free_irq(req->AssignedIRQ, p_dev->priv);
458 #ifdef CONFIG_PCMCIA_PROBE
459 pcmcia_used_irq[req->AssignedIRQ]--;
464 mutex_unlock(&s->ops_mutex);
467 } /* pcmcia_release_irq */
470 int pcmcia_release_window(struct pcmcia_device *p_dev, window_handle_t wh)
472 struct pcmcia_socket *s = p_dev->socket;
479 mutex_lock(&s->ops_mutex);
482 if (!(p_dev->_win & CLIENT_WIN_REQ(wh))) {
483 dev_dbg(&s->dev, "not releasing unknown window\n");
484 mutex_unlock(&s->ops_mutex);
488 /* Shut down memory window */
489 win->flags &= ~MAP_ACTIVE;
490 s->ops->set_mem_map(s, win);
491 s->state &= ~SOCKET_WIN_REQ(wh);
493 /* Release system memory */
495 release_resource(win->res);
499 p_dev->_win &= ~CLIENT_WIN_REQ(wh);
500 mutex_unlock(&s->ops_mutex);
503 } /* pcmcia_release_window */
504 EXPORT_SYMBOL(pcmcia_release_window);
507 int pcmcia_request_configuration(struct pcmcia_device *p_dev,
512 struct pcmcia_socket *s = p_dev->socket;
516 if (!(s->state & SOCKET_PRESENT))
519 if (req->IntType & INT_CARDBUS) {
520 dev_dbg(&s->dev, "IntType may not be INT_CARDBUS\n");
524 mutex_lock(&s->ops_mutex);
525 c = p_dev->function_config;
526 if (c->state & CONFIG_LOCKED) {
527 mutex_unlock(&s->ops_mutex);
528 dev_dbg(&s->dev, "Configuration is locked\n");
532 /* Do power control. We don't allow changes in Vcc. */
533 s->socket.Vpp = req->Vpp;
534 if (s->ops->set_socket(s, &s->socket)) {
535 mutex_unlock(&s->ops_mutex);
536 dev_printk(KERN_WARNING, &s->dev,
537 "Unable to set socket state\n");
541 /* Pick memory or I/O card, DMA mode, interrupt */
542 c->IntType = req->IntType;
543 c->Attributes = req->Attributes;
544 if (req->IntType & INT_MEMORY_AND_IO)
545 s->socket.flags |= SS_IOCARD;
546 if (req->IntType & INT_ZOOMED_VIDEO)
547 s->socket.flags |= SS_ZVCARD | SS_IOCARD;
548 if (req->Attributes & CONF_ENABLE_DMA)
549 s->socket.flags |= SS_DMA_MODE;
550 if (req->Attributes & CONF_ENABLE_SPKR)
551 s->socket.flags |= SS_SPKR_ENA;
552 if (req->Attributes & CONF_ENABLE_IRQ)
553 s->socket.io_irq = s->irq.AssignedIRQ;
555 s->socket.io_irq = 0;
556 s->ops->set_socket(s, &s->socket);
558 mutex_unlock(&s->ops_mutex);
560 /* Set up CIS configuration registers */
561 base = c->ConfigBase = req->ConfigBase;
562 c->CardValues = req->Present;
563 if (req->Present & PRESENT_COPY) {
565 pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy);
567 if (req->Present & PRESENT_OPTION) {
568 if (s->functions == 1) {
569 c->Option = req->ConfigIndex & COR_CONFIG_MASK;
571 c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK;
572 c->Option |= COR_FUNC_ENA|COR_IREQ_ENA;
573 if (req->Present & PRESENT_IOBASE_0)
574 c->Option |= COR_ADDR_DECODE;
576 if (c->state & CONFIG_IRQ_REQ)
577 if (!(c->irq.Attributes & IRQ_FORCED_PULSE))
578 c->Option |= COR_LEVEL_REQ;
579 pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option);
582 if (req->Present & PRESENT_STATUS) {
583 c->Status = req->Status;
584 pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status);
586 if (req->Present & PRESENT_PIN_REPLACE) {
588 pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin);
590 if (req->Present & PRESENT_EXT_STATUS) {
591 c->ExtStatus = req->ExtStatus;
592 pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus);
594 if (req->Present & PRESENT_IOBASE_0) {
595 u_char b = c->io.BasePort1 & 0xff;
596 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b);
597 b = (c->io.BasePort1 >> 8) & 0xff;
598 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b);
600 if (req->Present & PRESENT_IOSIZE) {
601 u_char b = c->io.NumPorts1 + c->io.NumPorts2 - 1;
602 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b);
605 /* Configure I/O windows */
606 if (c->state & CONFIG_IO_REQ) {
607 mutex_lock(&s->ops_mutex);
608 iomap.speed = io_speed;
609 for (i = 0; i < MAX_IO_WIN; i++)
612 iomap.flags = MAP_ACTIVE;
613 switch (s->io[i].res->flags & IO_DATA_PATH_WIDTH) {
614 case IO_DATA_PATH_WIDTH_16:
615 iomap.flags |= MAP_16BIT; break;
616 case IO_DATA_PATH_WIDTH_AUTO:
617 iomap.flags |= MAP_AUTOSZ; break;
621 iomap.start = s->io[i].res->start;
622 iomap.stop = s->io[i].res->end;
623 s->ops->set_io_map(s, &iomap);
626 mutex_unlock(&s->ops_mutex);
629 c->state |= CONFIG_LOCKED;
632 } /* pcmcia_request_configuration */
633 EXPORT_SYMBOL(pcmcia_request_configuration);
636 /** pcmcia_request_io
638 * Request_io() reserves ranges of port addresses for a socket.
639 * I have not implemented range sharing or alias addressing.
641 int pcmcia_request_io(struct pcmcia_device *p_dev, io_req_t *req)
643 struct pcmcia_socket *s = p_dev->socket;
647 mutex_lock(&s->ops_mutex);
649 if (!(s->state & SOCKET_PRESENT)) {
650 dev_dbg(&s->dev, "No card present\n");
657 c = p_dev->function_config;
658 if (c->state & CONFIG_LOCKED) {
659 dev_dbg(&s->dev, "Configuration is locked\n");
662 if (c->state & CONFIG_IO_REQ) {
663 dev_dbg(&s->dev, "IO already configured\n");
666 if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)) {
667 dev_dbg(&s->dev, "bad attribute setting for IO region 1\n");
670 if ((req->NumPorts2 > 0) &&
671 (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))) {
672 dev_dbg(&s->dev, "bad attribute setting for IO region 2\n");
676 dev_dbg(&s->dev, "trying to allocate resource 1\n");
677 ret = alloc_io_space(s, req->Attributes1, &req->BasePort1,
678 req->NumPorts1, req->IOAddrLines);
680 dev_dbg(&s->dev, "allocation of resource 1 failed\n");
684 if (req->NumPorts2) {
685 dev_dbg(&s->dev, "trying to allocate resource 2\n");
686 ret = alloc_io_space(s, req->Attributes2, &req->BasePort2,
687 req->NumPorts2, req->IOAddrLines);
689 dev_dbg(&s->dev, "allocation of resource 2 failed\n");
690 release_io_space(s, req->BasePort1, req->NumPorts1);
696 c->state |= CONFIG_IO_REQ;
698 dev_dbg(&s->dev, "allocating resources succeeded: %d\n", ret);
701 mutex_unlock(&s->ops_mutex);
704 } /* pcmcia_request_io */
705 EXPORT_SYMBOL(pcmcia_request_io);
708 /** pcmcia_request_irq
710 * Request_irq() reserves an irq for this client.
712 * Also, since Linux only reserves irq's when they are actually
713 * hooked, we don't guarantee that an irq will still be available
714 * when the configuration is locked. Now that I think about it,
715 * there might be a way to fix this using a dummy handler.
718 #ifdef CONFIG_PCMCIA_PROBE
719 static irqreturn_t test_action(int cpl, void *dev_id)
725 int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req)
727 struct pcmcia_socket *s = p_dev->socket;
729 int ret = -EINVAL, irq = 0;
732 mutex_lock(&s->ops_mutex);
734 if (!(s->state & SOCKET_PRESENT)) {
735 dev_dbg(&s->dev, "No card present\n");
738 c = p_dev->function_config;
739 if (c->state & CONFIG_LOCKED) {
740 dev_dbg(&s->dev, "Configuration is locked\n");
743 if (c->state & CONFIG_IRQ_REQ) {
744 dev_dbg(&s->dev, "IRQ already configured\n");
748 /* Decide what type of interrupt we are registering */
750 if (s->functions > 1) /* All of this ought to be handled higher up */
752 else if (req->Attributes & IRQ_TYPE_DYNAMIC_SHARING)
755 printk(KERN_WARNING "pcmcia: Driver needs updating to support IRQ sharing.\n");
757 #ifdef CONFIG_PCMCIA_PROBE
759 if (s->irq.AssignedIRQ != 0) {
760 /* If the interrupt is already assigned, it must be the same */
761 irq = s->irq.AssignedIRQ;
764 u32 mask = s->irq_mask;
765 void *data = p_dev; /* something unique to this device */
767 for (try = 0; try < 64; try++) {
770 /* marked as available by driver, and not blocked by userspace? */
771 if (!((mask >> irq) & 1))
774 /* avoid an IRQ which is already used by a PCMCIA card */
775 if ((try < 32) && pcmcia_used_irq[irq])
778 /* register the correct driver, if possible, of check whether
779 * registering a dummy handle works, i.e. if the IRQ isn't
780 * marked as used by the kernel resource management core */
781 ret = request_irq(irq,
782 (req->Handler) ? req->Handler : test_action,
785 (req->Handler) ? p_dev->priv : data);
794 /* only assign PCI irq if no IRQ already assigned */
795 if (ret && !s->irq.AssignedIRQ) {
797 dev_printk(KERN_INFO, &s->dev, "no IRQ found\n");
804 if (ret && req->Handler) {
805 ret = request_irq(irq, req->Handler, type,
806 p_dev->devname, p_dev->priv);
808 dev_printk(KERN_INFO, &s->dev,
809 "request_irq() failed\n");
814 /* Make sure the fact the request type was overridden is passed back */
815 if (type == IRQF_SHARED && !(req->Attributes & IRQ_TYPE_DYNAMIC_SHARING)) {
816 req->Attributes |= IRQ_TYPE_DYNAMIC_SHARING;
817 dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: "
818 "request for exclusive IRQ could not be fulfilled.\n");
819 dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: the driver "
820 "needs updating to supported shared IRQ lines.\n");
822 c->irq.Attributes = req->Attributes;
823 s->irq.AssignedIRQ = req->AssignedIRQ = irq;
826 c->state |= CONFIG_IRQ_REQ;
829 #ifdef CONFIG_PCMCIA_PROBE
830 pcmcia_used_irq[irq]++;
835 mutex_unlock(&s->ops_mutex);
837 } /* pcmcia_request_irq */
838 EXPORT_SYMBOL(pcmcia_request_irq);
841 /** pcmcia_request_window
843 * Request_window() establishes a mapping between card memory space
844 * and system memory space.
846 int pcmcia_request_window(struct pcmcia_device *p_dev, win_req_t *req, window_handle_t *wh)
848 struct pcmcia_socket *s = p_dev->socket;
853 if (!(s->state & SOCKET_PRESENT)) {
854 dev_dbg(&s->dev, "No card present\n");
857 if (req->Attributes & (WIN_PAGED | WIN_SHARED)) {
858 dev_dbg(&s->dev, "bad attribute setting for iomem region\n");
862 /* Window size defaults to smallest available */
864 req->Size = s->map_size;
865 align = (((s->features & SS_CAP_MEM_ALIGN) ||
866 (req->Attributes & WIN_STRICT_ALIGN)) ?
867 req->Size : s->map_size);
868 if (req->Size & (s->map_size-1)) {
869 dev_dbg(&s->dev, "invalid map size\n");
872 if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) ||
873 (req->Base & (align-1))) {
874 dev_dbg(&s->dev, "invalid base address\n");
880 /* Allocate system memory window */
881 for (w = 0; w < MAX_WIN; w++)
882 if (!(s->state & SOCKET_WIN_REQ(w)))
885 dev_dbg(&s->dev, "all windows are used already\n");
889 mutex_lock(&s->ops_mutex);
892 if (!(s->features & SS_CAP_STATIC_MAP)) {
893 win->res = pcmcia_find_mem_region(req->Base, req->Size, align,
894 (req->Attributes & WIN_MAP_BELOW_1MB), s);
896 dev_dbg(&s->dev, "allocating mem region failed\n");
897 mutex_unlock(&s->ops_mutex);
901 p_dev->_win |= CLIENT_WIN_REQ(w);
903 /* Configure the socket controller */
906 win->speed = req->AccessSpeed;
907 if (req->Attributes & WIN_MEMORY_TYPE)
908 win->flags |= MAP_ATTRIB;
909 if (req->Attributes & WIN_ENABLE)
910 win->flags |= MAP_ACTIVE;
911 if (req->Attributes & WIN_DATA_WIDTH_16)
912 win->flags |= MAP_16BIT;
913 if (req->Attributes & WIN_USE_WAIT)
914 win->flags |= MAP_USE_WAIT;
917 if (s->ops->set_mem_map(s, win) != 0) {
918 dev_dbg(&s->dev, "failed to set memory mapping\n");
919 mutex_unlock(&s->ops_mutex);
922 s->state |= SOCKET_WIN_REQ(w);
924 /* Return window handle */
925 if (s->features & SS_CAP_STATIC_MAP)
926 req->Base = win->static_start;
928 req->Base = win->res->start;
930 mutex_unlock(&s->ops_mutex);
934 } /* pcmcia_request_window */
935 EXPORT_SYMBOL(pcmcia_request_window);
937 void pcmcia_disable_device(struct pcmcia_device *p_dev)
939 pcmcia_release_configuration(p_dev);
940 pcmcia_release_io(p_dev, &p_dev->io);
941 pcmcia_release_irq(p_dev, &p_dev->irq);
943 pcmcia_release_window(p_dev, p_dev->win);
945 EXPORT_SYMBOL(pcmcia_disable_device);
948 struct pcmcia_cfg_mem {
949 struct pcmcia_device *p_dev;
951 int (*conf_check) (struct pcmcia_device *p_dev,
952 cistpl_cftable_entry_t *cfg,
953 cistpl_cftable_entry_t *dflt,
957 cistpl_cftable_entry_t dflt;
961 * pcmcia_do_loop_config() - internal helper for pcmcia_loop_config()
963 * pcmcia_do_loop_config() is the internal callback for the call from
964 * pcmcia_loop_config() to pccard_loop_tuple(). Data is transferred
965 * by a struct pcmcia_cfg_mem.
967 static int pcmcia_do_loop_config(tuple_t *tuple, cisparse_t *parse, void *priv)
969 cistpl_cftable_entry_t *cfg = &parse->cftable_entry;
970 struct pcmcia_cfg_mem *cfg_mem = priv;
973 cfg_mem->p_dev->conf.ConfigIndex = cfg->index;
974 if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
975 cfg_mem->dflt = *cfg;
977 return cfg_mem->conf_check(cfg_mem->p_dev, cfg, &cfg_mem->dflt,
978 cfg_mem->p_dev->socket->socket.Vcc,
983 * pcmcia_loop_config() - loop over configuration options
984 * @p_dev: the struct pcmcia_device which we need to loop for.
985 * @conf_check: function to call for each configuration option.
986 * It gets passed the struct pcmcia_device, the CIS data
987 * describing the configuration option, and private data
988 * being passed to pcmcia_loop_config()
989 * @priv_data: private data to be passed to the conf_check function.
991 * pcmcia_loop_config() loops over all configuration options, and calls
992 * the driver-specific conf_check() for each one, checking whether
993 * it is a valid one. Returns 0 on success or errorcode otherwise.
995 int pcmcia_loop_config(struct pcmcia_device *p_dev,
996 int (*conf_check) (struct pcmcia_device *p_dev,
997 cistpl_cftable_entry_t *cfg,
998 cistpl_cftable_entry_t *dflt,
1003 struct pcmcia_cfg_mem *cfg_mem;
1006 cfg_mem = kzalloc(sizeof(struct pcmcia_cfg_mem), GFP_KERNEL);
1007 if (cfg_mem == NULL)
1010 cfg_mem->p_dev = p_dev;
1011 cfg_mem->conf_check = conf_check;
1012 cfg_mem->priv_data = priv_data;
1014 ret = pccard_loop_tuple(p_dev->socket, p_dev->func,
1015 CISTPL_CFTABLE_ENTRY, &cfg_mem->parse,
1016 cfg_mem, pcmcia_do_loop_config);
1021 EXPORT_SYMBOL(pcmcia_loop_config);
1024 struct pcmcia_loop_mem {
1025 struct pcmcia_device *p_dev;
1027 int (*loop_tuple) (struct pcmcia_device *p_dev,
1033 * pcmcia_do_loop_tuple() - internal helper for pcmcia_loop_config()
1035 * pcmcia_do_loop_tuple() is the internal callback for the call from
1036 * pcmcia_loop_tuple() to pccard_loop_tuple(). Data is transferred
1037 * by a struct pcmcia_cfg_mem.
1039 static int pcmcia_do_loop_tuple(tuple_t *tuple, cisparse_t *parse, void *priv)
1041 struct pcmcia_loop_mem *loop = priv;
1043 return loop->loop_tuple(loop->p_dev, tuple, loop->priv_data);
1047 * pcmcia_loop_tuple() - loop over tuples in the CIS
1048 * @p_dev: the struct pcmcia_device which we need to loop for.
1049 * @code: which CIS code shall we look for?
1050 * @priv_data: private data to be passed to the loop_tuple function.
1051 * @loop_tuple: function to call for each CIS entry of type @function. IT
1052 * gets passed the raw tuple and @priv_data.
1054 * pcmcia_loop_tuple() loops over all CIS entries of type @function, and
1055 * calls the @loop_tuple function for each entry. If the call to @loop_tuple
1056 * returns 0, the loop exits. Returns 0 on success or errorcode otherwise.
1058 int pcmcia_loop_tuple(struct pcmcia_device *p_dev, cisdata_t code,
1059 int (*loop_tuple) (struct pcmcia_device *p_dev,
1064 struct pcmcia_loop_mem loop = {
1066 .loop_tuple = loop_tuple,
1067 .priv_data = priv_data};
1069 return pccard_loop_tuple(p_dev->socket, p_dev->func, code, NULL,
1070 &loop, pcmcia_do_loop_tuple);
1072 EXPORT_SYMBOL(pcmcia_loop_tuple);
1075 struct pcmcia_loop_get {
1081 * pcmcia_do_get_tuple() - internal helper for pcmcia_get_tuple()
1083 * pcmcia_do_get_tuple() is the internal callback for the call from
1084 * pcmcia_get_tuple() to pcmcia_loop_tuple(). As we're only interested in
1085 * the first tuple, return 0 unconditionally. Create a memory buffer large
1086 * enough to hold the content of the tuple, and fill it with the tuple data.
1087 * The caller is responsible to free the buffer.
1089 static int pcmcia_do_get_tuple(struct pcmcia_device *p_dev, tuple_t *tuple,
1092 struct pcmcia_loop_get *get = priv;
1094 *get->buf = kzalloc(tuple->TupleDataLen, GFP_KERNEL);
1096 get->len = tuple->TupleDataLen;
1097 memcpy(*get->buf, tuple->TupleData, tuple->TupleDataLen);
1099 dev_dbg(&p_dev->dev, "do_get_tuple: out of memory\n");
1104 * pcmcia_get_tuple() - get first tuple from CIS
1105 * @p_dev: the struct pcmcia_device which we need to loop for.
1106 * @code: which CIS code shall we look for?
1107 * @buf: pointer to store the buffer to.
1109 * pcmcia_get_tuple() gets the content of the first CIS entry of type @code.
1110 * It returns the buffer length (or zero). The caller is responsible to free
1111 * the buffer passed in @buf.
1113 size_t pcmcia_get_tuple(struct pcmcia_device *p_dev, cisdata_t code,
1114 unsigned char **buf)
1116 struct pcmcia_loop_get get = {
1122 pcmcia_loop_tuple(p_dev, code, pcmcia_do_get_tuple, &get);
1126 EXPORT_SYMBOL(pcmcia_get_tuple);
1130 * pcmcia_do_get_mac() - internal helper for pcmcia_get_mac_from_cis()
1132 * pcmcia_do_get_mac() is the internal callback for the call from
1133 * pcmcia_get_mac_from_cis() to pcmcia_loop_tuple(). We check whether the
1134 * tuple contains a proper LAN_NODE_ID of length 6, and copy the data
1135 * to struct net_device->dev_addr[i].
1137 static int pcmcia_do_get_mac(struct pcmcia_device *p_dev, tuple_t *tuple,
1140 struct net_device *dev = priv;
1143 if (tuple->TupleData[0] != CISTPL_FUNCE_LAN_NODE_ID)
1145 if (tuple->TupleDataLen < ETH_ALEN + 2) {
1146 dev_warn(&p_dev->dev, "Invalid CIS tuple length for "
1151 if (tuple->TupleData[1] != ETH_ALEN) {
1152 dev_warn(&p_dev->dev, "Invalid header for LAN_NODE_ID\n");
1155 for (i = 0; i < 6; i++)
1156 dev->dev_addr[i] = tuple->TupleData[i+2];
1161 * pcmcia_get_mac_from_cis() - read out MAC address from CISTPL_FUNCE
1162 * @p_dev: the struct pcmcia_device for which we want the address.
1163 * @dev: a properly prepared struct net_device to store the info to.
1165 * pcmcia_get_mac_from_cis() reads out the hardware MAC address from
1166 * CISTPL_FUNCE and stores it into struct net_device *dev->dev_addr which
1167 * must be set up properly by the driver (see examples!).
1169 int pcmcia_get_mac_from_cis(struct pcmcia_device *p_dev, struct net_device *dev)
1171 return pcmcia_loop_tuple(p_dev, CISTPL_FUNCE, pcmcia_do_get_mac, dev);
1173 EXPORT_SYMBOL(pcmcia_get_mac_from_cis);