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>
24 #include <linux/slab.h>
26 #include <pcmcia/cs_types.h>
27 #include <pcmcia/ss.h>
28 #include <pcmcia/cs.h>
29 #include <pcmcia/cistpl.h>
30 #include <pcmcia/cisreg.h>
31 #include <pcmcia/ds.h>
33 #include "cs_internal.h"
36 /* Access speed for IO windows */
38 module_param(io_speed, int, 0444);
41 #ifdef CONFIG_PCMCIA_PROBE
43 /* mask of IRQs already reserved by other cards, we should avoid using them */
44 static u8 pcmcia_used_irq[NR_IRQS];
47 static int pcmcia_adjust_io_region(struct resource *res, unsigned long start,
48 unsigned long end, struct pcmcia_socket *s)
50 if (s->resource_ops->adjust_io_region)
51 return s->resource_ops->adjust_io_region(res, start, end, s);
55 static struct resource *pcmcia_find_io_region(unsigned long base, int num,
57 struct pcmcia_socket *s)
59 if (s->resource_ops->find_io)
60 return s->resource_ops->find_io(base, num, align, s);
64 int pcmcia_validate_mem(struct pcmcia_socket *s)
66 if (s->resource_ops->validate_mem)
67 return s->resource_ops->validate_mem(s);
68 /* if there is no callback, we can assume that everything is OK */
72 struct resource *pcmcia_find_mem_region(u_long base, u_long num, u_long align,
73 int low, struct pcmcia_socket *s)
75 if (s->resource_ops->find_mem)
76 return s->resource_ops->find_mem(base, num, align, low, s);
83 * Special stuff for managing IO windows, because they are scarce
86 static int alloc_io_space(struct pcmcia_socket *s, u_int attr,
87 unsigned int *base, unsigned int num, u_int lines)
90 unsigned int try, align;
92 align = (*base) ? (lines ? 1<<lines : 0) : 1;
93 if (align && (align < num)) {
95 dev_dbg(&s->dev, "odd IO request: num %#x align %#x\n",
99 while (align && (align < num))
102 if (*base & ~(align-1)) {
103 dev_dbg(&s->dev, "odd IO request: base %#x align %#x\n",
107 if ((s->features & SS_CAP_STATIC_MAP) && s->io_offset) {
108 *base = s->io_offset | (*base & 0x0fff);
111 /* Check for an already-allocated window that must conflict with
112 * what was asked for. It is a hack because it does not catch all
113 * potential conflicts, just the most obvious ones.
115 for (i = 0; i < MAX_IO_WIN; i++)
116 if ((s->io[i].res) && *base &&
117 ((s->io[i].res->start & (align-1)) == *base))
119 for (i = 0; i < MAX_IO_WIN; i++) {
121 s->io[i].res = pcmcia_find_io_region(*base, num, align, s);
123 *base = s->io[i].res->start;
124 s->io[i].res->flags = (s->io[i].res->flags & ~IORESOURCE_BITS) | (attr & IORESOURCE_BITS);
125 s->io[i].InUse = num;
129 } else if ((s->io[i].res->flags & IORESOURCE_BITS) != (attr & IORESOURCE_BITS))
131 /* Try to extend top of window */
132 try = s->io[i].res->end + 1;
133 if ((*base == 0) || (*base == try))
134 if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start,
135 s->io[i].res->end + num, s) == 0) {
137 s->io[i].InUse += num;
140 /* Try to extend bottom of window */
141 try = s->io[i].res->start - num;
142 if ((*base == 0) || (*base == try))
143 if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start - num,
144 s->io[i].res->end, s) == 0) {
146 s->io[i].InUse += num;
150 return (i == MAX_IO_WIN);
151 } /* alloc_io_space */
154 static void release_io_space(struct pcmcia_socket *s, unsigned int base,
159 for (i = 0; i < MAX_IO_WIN; i++) {
162 if ((s->io[i].res->start <= base) &&
163 (s->io[i].res->end >= base+num-1)) {
164 s->io[i].InUse -= num;
165 /* Free the window if no one else is using it */
166 if (s->io[i].InUse == 0) {
167 release_resource(s->io[i].res);
173 } /* release_io_space */
176 /** pccard_access_configuration_register
178 * Access_configuration_register() reads and writes configuration
179 * registers in attribute memory. Memory window 0 is reserved for
180 * this and the tuple reading services.
183 int pcmcia_access_configuration_register(struct pcmcia_device *p_dev,
186 struct pcmcia_socket *s;
191 if (!p_dev || !p_dev->function_config)
196 mutex_lock(&s->ops_mutex);
197 c = p_dev->function_config;
199 if (!(c->state & CONFIG_LOCKED)) {
200 dev_dbg(&s->dev, "Configuration isnt't locked\n");
201 mutex_unlock(&s->ops_mutex);
205 addr = (c->ConfigBase + reg->Offset) >> 1;
206 mutex_unlock(&s->ops_mutex);
208 switch (reg->Action) {
210 pcmcia_read_cis_mem(s, 1, addr, 1, &val);
215 pcmcia_write_cis_mem(s, 1, addr, 1, &val);
218 dev_dbg(&s->dev, "Invalid conf register request\n");
223 } /* pcmcia_access_configuration_register */
224 EXPORT_SYMBOL(pcmcia_access_configuration_register);
227 int pcmcia_map_mem_page(struct pcmcia_device *p_dev, window_handle_t wh,
230 struct pcmcia_socket *s = p_dev->socket;
236 if (req->Page != 0) {
237 dev_dbg(&s->dev, "failure: requested page is zero\n");
240 mutex_lock(&s->ops_mutex);
241 s->win[wh].card_start = req->CardOffset;
242 ret = s->ops->set_mem_map(s, &s->win[wh]);
244 dev_warn(&s->dev, "failed to set_mem_map\n");
245 mutex_unlock(&s->ops_mutex);
247 } /* pcmcia_map_mem_page */
248 EXPORT_SYMBOL(pcmcia_map_mem_page);
251 /** pcmcia_modify_configuration
253 * Modify a locked socket configuration
255 int pcmcia_modify_configuration(struct pcmcia_device *p_dev,
258 struct pcmcia_socket *s;
264 mutex_lock(&s->ops_mutex);
265 c = p_dev->function_config;
267 if (!(s->state & SOCKET_PRESENT)) {
268 dev_dbg(&s->dev, "No card present\n");
272 if (!(c->state & CONFIG_LOCKED)) {
273 dev_dbg(&s->dev, "Configuration isnt't locked\n");
278 if (mod->Attributes & (CONF_IRQ_CHANGE_VALID | CONF_VCC_CHANGE_VALID)) {
280 "changing Vcc or IRQ is not allowed at this time\n");
285 /* We only allow changing Vpp1 and Vpp2 to the same value */
286 if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) &&
287 (mod->Attributes & CONF_VPP2_CHANGE_VALID)) {
288 if (mod->Vpp1 != mod->Vpp2) {
289 dev_dbg(&s->dev, "Vpp1 and Vpp2 must be the same\n");
293 s->socket.Vpp = mod->Vpp1;
294 if (s->ops->set_socket(s, &s->socket)) {
295 dev_printk(KERN_WARNING, &s->dev,
296 "Unable to set VPP\n");
300 } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) ||
301 (mod->Attributes & CONF_VPP2_CHANGE_VALID)) {
302 dev_dbg(&s->dev, "changing Vcc is not allowed at this time\n");
307 if (mod->Attributes & CONF_IO_CHANGE_WIDTH) {
308 pccard_io_map io_off = { 0, 0, 0, 0, 1 };
312 io_on.speed = io_speed;
313 for (i = 0; i < MAX_IO_WIN; i++) {
319 io_on.flags = MAP_ACTIVE | IO_DATA_PATH_WIDTH_8;
320 io_on.start = s->io[i].res->start;
321 io_on.stop = s->io[i].res->end;
323 s->ops->set_io_map(s, &io_off);
325 s->ops->set_io_map(s, &io_on);
330 mutex_unlock(&s->ops_mutex);
333 } /* modify_configuration */
334 EXPORT_SYMBOL(pcmcia_modify_configuration);
337 int pcmcia_release_configuration(struct pcmcia_device *p_dev)
339 pccard_io_map io = { 0, 0, 0, 0, 1 };
340 struct pcmcia_socket *s = p_dev->socket;
344 mutex_lock(&s->ops_mutex);
345 c = p_dev->function_config;
346 if (p_dev->_locked) {
348 if (--(s->lock_count) == 0) {
349 s->socket.flags = SS_OUTPUT_ENA; /* Is this correct? */
351 s->socket.io_irq = 0;
352 s->ops->set_socket(s, &s->socket);
355 if (c->state & CONFIG_LOCKED) {
356 c->state &= ~CONFIG_LOCKED;
357 if (c->state & CONFIG_IO_REQ)
358 for (i = 0; i < MAX_IO_WIN; i++) {
362 if (s->io[i].Config != 0)
365 s->ops->set_io_map(s, &io);
368 mutex_unlock(&s->ops_mutex);
371 } /* pcmcia_release_configuration */
374 /** pcmcia_release_io
376 * Release_io() releases the I/O ranges allocated by a client. This
377 * may be invoked some time after a card ejection has already dumped
378 * the actual socket configuration, so if the client is "stale", we
379 * don't bother checking the port ranges against the current socket
382 static int pcmcia_release_io(struct pcmcia_device *p_dev, io_req_t *req)
384 struct pcmcia_socket *s = p_dev->socket;
388 mutex_lock(&s->ops_mutex);
389 c = p_dev->function_config;
396 if ((c->io.BasePort1 != req->BasePort1) ||
397 (c->io.NumPorts1 != req->NumPorts1) ||
398 (c->io.BasePort2 != req->BasePort2) ||
399 (c->io.NumPorts2 != req->NumPorts2))
402 c->state &= ~CONFIG_IO_REQ;
404 release_io_space(s, req->BasePort1, req->NumPorts1);
406 release_io_space(s, req->BasePort2, req->NumPorts2);
409 mutex_unlock(&s->ops_mutex);
412 } /* pcmcia_release_io */
415 static int pcmcia_release_irq(struct pcmcia_device *p_dev, irq_req_t *req)
417 struct pcmcia_socket *s = p_dev->socket;
421 mutex_lock(&s->ops_mutex);
423 c = p_dev->function_config;
430 if (c->state & CONFIG_LOCKED)
433 if (c->irq.Attributes != req->Attributes) {
434 dev_dbg(&s->dev, "IRQ attributes must match assigned ones\n");
437 if (s->irq.AssignedIRQ != req->AssignedIRQ) {
438 dev_dbg(&s->dev, "IRQ must match assigned one\n");
441 if (--s->irq.Config == 0) {
442 c->state &= ~CONFIG_IRQ_REQ;
443 s->irq.AssignedIRQ = 0;
447 free_irq(req->AssignedIRQ, p_dev->priv);
449 #ifdef CONFIG_PCMCIA_PROBE
450 pcmcia_used_irq[req->AssignedIRQ]--;
455 mutex_unlock(&s->ops_mutex);
458 } /* pcmcia_release_irq */
461 int pcmcia_release_window(struct pcmcia_device *p_dev, window_handle_t wh)
463 struct pcmcia_socket *s = p_dev->socket;
470 mutex_lock(&s->ops_mutex);
473 if (!(p_dev->_win & CLIENT_WIN_REQ(wh))) {
474 dev_dbg(&s->dev, "not releasing unknown window\n");
475 mutex_unlock(&s->ops_mutex);
479 /* Shut down memory window */
480 win->flags &= ~MAP_ACTIVE;
481 s->ops->set_mem_map(s, win);
482 s->state &= ~SOCKET_WIN_REQ(wh);
484 /* Release system memory */
486 release_resource(win->res);
490 p_dev->_win &= ~CLIENT_WIN_REQ(wh);
491 mutex_unlock(&s->ops_mutex);
494 } /* pcmcia_release_window */
495 EXPORT_SYMBOL(pcmcia_release_window);
498 int pcmcia_request_configuration(struct pcmcia_device *p_dev,
503 struct pcmcia_socket *s = p_dev->socket;
507 if (!(s->state & SOCKET_PRESENT))
510 if (req->IntType & INT_CARDBUS) {
511 dev_dbg(&s->dev, "IntType may not be INT_CARDBUS\n");
515 mutex_lock(&s->ops_mutex);
516 c = p_dev->function_config;
517 if (c->state & CONFIG_LOCKED) {
518 mutex_unlock(&s->ops_mutex);
519 dev_dbg(&s->dev, "Configuration is locked\n");
523 /* Do power control. We don't allow changes in Vcc. */
524 s->socket.Vpp = req->Vpp;
525 if (s->ops->set_socket(s, &s->socket)) {
526 mutex_unlock(&s->ops_mutex);
527 dev_printk(KERN_WARNING, &s->dev,
528 "Unable to set socket state\n");
532 /* Pick memory or I/O card, DMA mode, interrupt */
533 c->IntType = req->IntType;
534 c->Attributes = req->Attributes;
535 if (req->IntType & INT_MEMORY_AND_IO)
536 s->socket.flags |= SS_IOCARD;
537 if (req->IntType & INT_ZOOMED_VIDEO)
538 s->socket.flags |= SS_ZVCARD | SS_IOCARD;
539 if (req->Attributes & CONF_ENABLE_DMA)
540 s->socket.flags |= SS_DMA_MODE;
541 if (req->Attributes & CONF_ENABLE_SPKR)
542 s->socket.flags |= SS_SPKR_ENA;
543 if (req->Attributes & CONF_ENABLE_IRQ)
544 s->socket.io_irq = s->irq.AssignedIRQ;
546 s->socket.io_irq = 0;
547 s->ops->set_socket(s, &s->socket);
549 mutex_unlock(&s->ops_mutex);
551 /* Set up CIS configuration registers */
552 base = c->ConfigBase = req->ConfigBase;
553 c->CardValues = req->Present;
554 if (req->Present & PRESENT_COPY) {
556 pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy);
558 if (req->Present & PRESENT_OPTION) {
559 if (s->functions == 1) {
560 c->Option = req->ConfigIndex & COR_CONFIG_MASK;
562 c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK;
563 c->Option |= COR_FUNC_ENA|COR_IREQ_ENA;
564 if (req->Present & PRESENT_IOBASE_0)
565 c->Option |= COR_ADDR_DECODE;
567 if (c->state & CONFIG_IRQ_REQ)
568 if (!(c->irq.Attributes & IRQ_FORCED_PULSE))
569 c->Option |= COR_LEVEL_REQ;
570 pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option);
573 if (req->Present & PRESENT_STATUS) {
574 c->Status = req->Status;
575 pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status);
577 if (req->Present & PRESENT_PIN_REPLACE) {
579 pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin);
581 if (req->Present & PRESENT_EXT_STATUS) {
582 c->ExtStatus = req->ExtStatus;
583 pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus);
585 if (req->Present & PRESENT_IOBASE_0) {
586 u_char b = c->io.BasePort1 & 0xff;
587 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b);
588 b = (c->io.BasePort1 >> 8) & 0xff;
589 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b);
591 if (req->Present & PRESENT_IOSIZE) {
592 u_char b = c->io.NumPorts1 + c->io.NumPorts2 - 1;
593 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b);
596 /* Configure I/O windows */
597 if (c->state & CONFIG_IO_REQ) {
598 mutex_lock(&s->ops_mutex);
599 iomap.speed = io_speed;
600 for (i = 0; i < MAX_IO_WIN; i++)
603 iomap.flags = MAP_ACTIVE;
604 switch (s->io[i].res->flags & IO_DATA_PATH_WIDTH) {
605 case IO_DATA_PATH_WIDTH_16:
606 iomap.flags |= MAP_16BIT; break;
607 case IO_DATA_PATH_WIDTH_AUTO:
608 iomap.flags |= MAP_AUTOSZ; break;
612 iomap.start = s->io[i].res->start;
613 iomap.stop = s->io[i].res->end;
614 s->ops->set_io_map(s, &iomap);
617 mutex_unlock(&s->ops_mutex);
620 c->state |= CONFIG_LOCKED;
623 } /* pcmcia_request_configuration */
624 EXPORT_SYMBOL(pcmcia_request_configuration);
627 /** pcmcia_request_io
629 * Request_io() reserves ranges of port addresses for a socket.
630 * I have not implemented range sharing or alias addressing.
632 int pcmcia_request_io(struct pcmcia_device *p_dev, io_req_t *req)
634 struct pcmcia_socket *s = p_dev->socket;
638 mutex_lock(&s->ops_mutex);
640 if (!(s->state & SOCKET_PRESENT)) {
641 dev_dbg(&s->dev, "No card present\n");
648 c = p_dev->function_config;
649 if (c->state & CONFIG_LOCKED) {
650 dev_dbg(&s->dev, "Configuration is locked\n");
653 if (c->state & CONFIG_IO_REQ) {
654 dev_dbg(&s->dev, "IO already configured\n");
657 if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)) {
658 dev_dbg(&s->dev, "bad attribute setting for IO region 1\n");
661 if ((req->NumPorts2 > 0) &&
662 (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))) {
663 dev_dbg(&s->dev, "bad attribute setting for IO region 2\n");
667 dev_dbg(&s->dev, "trying to allocate resource 1\n");
668 ret = alloc_io_space(s, req->Attributes1, &req->BasePort1,
669 req->NumPorts1, req->IOAddrLines);
671 dev_dbg(&s->dev, "allocation of resource 1 failed\n");
675 if (req->NumPorts2) {
676 dev_dbg(&s->dev, "trying to allocate resource 2\n");
677 ret = alloc_io_space(s, req->Attributes2, &req->BasePort2,
678 req->NumPorts2, req->IOAddrLines);
680 dev_dbg(&s->dev, "allocation of resource 2 failed\n");
681 release_io_space(s, req->BasePort1, req->NumPorts1);
687 c->state |= CONFIG_IO_REQ;
689 dev_dbg(&s->dev, "allocating resources succeeded: %d\n", ret);
692 mutex_unlock(&s->ops_mutex);
695 } /* pcmcia_request_io */
696 EXPORT_SYMBOL(pcmcia_request_io);
699 /** pcmcia_request_irq
701 * Request_irq() reserves an irq for this client.
703 * Also, since Linux only reserves irq's when they are actually
704 * hooked, we don't guarantee that an irq will still be available
705 * when the configuration is locked. Now that I think about it,
706 * there might be a way to fix this using a dummy handler.
709 #ifdef CONFIG_PCMCIA_PROBE
710 static irqreturn_t test_action(int cpl, void *dev_id)
716 int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req)
718 struct pcmcia_socket *s = p_dev->socket;
720 int ret = -EINVAL, irq = 0;
723 mutex_lock(&s->ops_mutex);
725 if (!(s->state & SOCKET_PRESENT)) {
726 dev_dbg(&s->dev, "No card present\n");
729 c = p_dev->function_config;
730 if (c->state & CONFIG_LOCKED) {
731 dev_dbg(&s->dev, "Configuration is locked\n");
734 if (c->state & CONFIG_IRQ_REQ) {
735 dev_dbg(&s->dev, "IRQ already configured\n");
739 /* Decide what type of interrupt we are registering */
741 if (s->functions > 1) /* All of this ought to be handled higher up */
743 else if (req->Attributes & IRQ_TYPE_DYNAMIC_SHARING)
746 printk(KERN_WARNING "pcmcia: Driver needs updating to support IRQ sharing.\n");
748 /* If the interrupt is already assigned, it must be the same */
749 if (s->irq.AssignedIRQ != 0)
750 irq = s->irq.AssignedIRQ;
752 #ifdef CONFIG_PCMCIA_PROBE
755 u32 mask = s->irq_mask;
756 void *data = p_dev; /* something unique to this device */
758 for (try = 0; try < 64; try++) {
761 /* marked as available by driver, and not blocked by userspace? */
762 if (!((mask >> irq) & 1))
765 /* avoid an IRQ which is already used by a PCMCIA card */
766 if ((try < 32) && pcmcia_used_irq[irq])
769 /* register the correct driver, if possible, of check whether
770 * registering a dummy handle works, i.e. if the IRQ isn't
771 * marked as used by the kernel resource management core */
772 ret = request_irq(irq,
773 (req->Handler) ? req->Handler : test_action,
776 (req->Handler) ? p_dev->priv : data);
785 /* only assign PCI irq if no IRQ already assigned */
786 if (ret && !s->irq.AssignedIRQ) {
788 dev_printk(KERN_INFO, &s->dev, "no IRQ found\n");
795 if (ret && req->Handler) {
796 ret = request_irq(irq, req->Handler, type,
797 p_dev->devname, p_dev->priv);
799 dev_printk(KERN_INFO, &s->dev,
800 "request_irq() failed\n");
805 /* Make sure the fact the request type was overridden is passed back */
806 if (type == IRQF_SHARED && !(req->Attributes & IRQ_TYPE_DYNAMIC_SHARING)) {
807 req->Attributes |= IRQ_TYPE_DYNAMIC_SHARING;
808 dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: "
809 "request for exclusive IRQ could not be fulfilled.\n");
810 dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: the driver "
811 "needs updating to supported shared IRQ lines.\n");
813 c->irq.Attributes = req->Attributes;
814 s->irq.AssignedIRQ = req->AssignedIRQ = irq;
817 c->state |= CONFIG_IRQ_REQ;
820 #ifdef CONFIG_PCMCIA_PROBE
821 pcmcia_used_irq[irq]++;
826 mutex_unlock(&s->ops_mutex);
828 } /* pcmcia_request_irq */
829 EXPORT_SYMBOL(pcmcia_request_irq);
832 /** pcmcia_request_window
834 * Request_window() establishes a mapping between card memory space
835 * and system memory space.
837 int pcmcia_request_window(struct pcmcia_device *p_dev, win_req_t *req, window_handle_t *wh)
839 struct pcmcia_socket *s = p_dev->socket;
844 if (!(s->state & SOCKET_PRESENT)) {
845 dev_dbg(&s->dev, "No card present\n");
848 if (req->Attributes & (WIN_PAGED | WIN_SHARED)) {
849 dev_dbg(&s->dev, "bad attribute setting for iomem region\n");
853 /* Window size defaults to smallest available */
855 req->Size = s->map_size;
856 align = (((s->features & SS_CAP_MEM_ALIGN) ||
857 (req->Attributes & WIN_STRICT_ALIGN)) ?
858 req->Size : s->map_size);
859 if (req->Size & (s->map_size-1)) {
860 dev_dbg(&s->dev, "invalid map size\n");
863 if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) ||
864 (req->Base & (align-1))) {
865 dev_dbg(&s->dev, "invalid base address\n");
871 /* Allocate system memory window */
872 for (w = 0; w < MAX_WIN; w++)
873 if (!(s->state & SOCKET_WIN_REQ(w)))
876 dev_dbg(&s->dev, "all windows are used already\n");
880 mutex_lock(&s->ops_mutex);
883 if (!(s->features & SS_CAP_STATIC_MAP)) {
884 win->res = pcmcia_find_mem_region(req->Base, req->Size, align,
885 (req->Attributes & WIN_MAP_BELOW_1MB), s);
887 dev_dbg(&s->dev, "allocating mem region failed\n");
888 mutex_unlock(&s->ops_mutex);
892 p_dev->_win |= CLIENT_WIN_REQ(w);
894 /* Configure the socket controller */
897 win->speed = req->AccessSpeed;
898 if (req->Attributes & WIN_MEMORY_TYPE)
899 win->flags |= MAP_ATTRIB;
900 if (req->Attributes & WIN_ENABLE)
901 win->flags |= MAP_ACTIVE;
902 if (req->Attributes & WIN_DATA_WIDTH_16)
903 win->flags |= MAP_16BIT;
904 if (req->Attributes & WIN_USE_WAIT)
905 win->flags |= MAP_USE_WAIT;
908 if (s->ops->set_mem_map(s, win) != 0) {
909 dev_dbg(&s->dev, "failed to set memory mapping\n");
910 mutex_unlock(&s->ops_mutex);
913 s->state |= SOCKET_WIN_REQ(w);
915 /* Return window handle */
916 if (s->features & SS_CAP_STATIC_MAP)
917 req->Base = win->static_start;
919 req->Base = win->res->start;
921 mutex_unlock(&s->ops_mutex);
925 } /* pcmcia_request_window */
926 EXPORT_SYMBOL(pcmcia_request_window);
928 void pcmcia_disable_device(struct pcmcia_device *p_dev)
930 pcmcia_release_configuration(p_dev);
931 pcmcia_release_io(p_dev, &p_dev->io);
932 pcmcia_release_irq(p_dev, &p_dev->irq);
934 pcmcia_release_window(p_dev, p_dev->win);
936 EXPORT_SYMBOL(pcmcia_disable_device);
939 struct pcmcia_cfg_mem {
940 struct pcmcia_device *p_dev;
942 int (*conf_check) (struct pcmcia_device *p_dev,
943 cistpl_cftable_entry_t *cfg,
944 cistpl_cftable_entry_t *dflt,
948 cistpl_cftable_entry_t dflt;
952 * pcmcia_do_loop_config() - internal helper for pcmcia_loop_config()
954 * pcmcia_do_loop_config() is the internal callback for the call from
955 * pcmcia_loop_config() to pccard_loop_tuple(). Data is transferred
956 * by a struct pcmcia_cfg_mem.
958 static int pcmcia_do_loop_config(tuple_t *tuple, cisparse_t *parse, void *priv)
960 cistpl_cftable_entry_t *cfg = &parse->cftable_entry;
961 struct pcmcia_cfg_mem *cfg_mem = priv;
964 cfg_mem->p_dev->conf.ConfigIndex = cfg->index;
965 if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
966 cfg_mem->dflt = *cfg;
968 return cfg_mem->conf_check(cfg_mem->p_dev, cfg, &cfg_mem->dflt,
969 cfg_mem->p_dev->socket->socket.Vcc,
974 * pcmcia_loop_config() - loop over configuration options
975 * @p_dev: the struct pcmcia_device which we need to loop for.
976 * @conf_check: function to call for each configuration option.
977 * It gets passed the struct pcmcia_device, the CIS data
978 * describing the configuration option, and private data
979 * being passed to pcmcia_loop_config()
980 * @priv_data: private data to be passed to the conf_check function.
982 * pcmcia_loop_config() loops over all configuration options, and calls
983 * the driver-specific conf_check() for each one, checking whether
984 * it is a valid one. Returns 0 on success or errorcode otherwise.
986 int pcmcia_loop_config(struct pcmcia_device *p_dev,
987 int (*conf_check) (struct pcmcia_device *p_dev,
988 cistpl_cftable_entry_t *cfg,
989 cistpl_cftable_entry_t *dflt,
994 struct pcmcia_cfg_mem *cfg_mem;
997 cfg_mem = kzalloc(sizeof(struct pcmcia_cfg_mem), GFP_KERNEL);
1001 cfg_mem->p_dev = p_dev;
1002 cfg_mem->conf_check = conf_check;
1003 cfg_mem->priv_data = priv_data;
1005 ret = pccard_loop_tuple(p_dev->socket, p_dev->func,
1006 CISTPL_CFTABLE_ENTRY, &cfg_mem->parse,
1007 cfg_mem, pcmcia_do_loop_config);
1012 EXPORT_SYMBOL(pcmcia_loop_config);
1015 struct pcmcia_loop_mem {
1016 struct pcmcia_device *p_dev;
1018 int (*loop_tuple) (struct pcmcia_device *p_dev,
1024 * pcmcia_do_loop_tuple() - internal helper for pcmcia_loop_config()
1026 * pcmcia_do_loop_tuple() is the internal callback for the call from
1027 * pcmcia_loop_tuple() to pccard_loop_tuple(). Data is transferred
1028 * by a struct pcmcia_cfg_mem.
1030 static int pcmcia_do_loop_tuple(tuple_t *tuple, cisparse_t *parse, void *priv)
1032 struct pcmcia_loop_mem *loop = priv;
1034 return loop->loop_tuple(loop->p_dev, tuple, loop->priv_data);
1038 * pcmcia_loop_tuple() - loop over tuples in the CIS
1039 * @p_dev: the struct pcmcia_device which we need to loop for.
1040 * @code: which CIS code shall we look for?
1041 * @priv_data: private data to be passed to the loop_tuple function.
1042 * @loop_tuple: function to call for each CIS entry of type @function. IT
1043 * gets passed the raw tuple and @priv_data.
1045 * pcmcia_loop_tuple() loops over all CIS entries of type @function, and
1046 * calls the @loop_tuple function for each entry. If the call to @loop_tuple
1047 * returns 0, the loop exits. Returns 0 on success or errorcode otherwise.
1049 int pcmcia_loop_tuple(struct pcmcia_device *p_dev, cisdata_t code,
1050 int (*loop_tuple) (struct pcmcia_device *p_dev,
1055 struct pcmcia_loop_mem loop = {
1057 .loop_tuple = loop_tuple,
1058 .priv_data = priv_data};
1060 return pccard_loop_tuple(p_dev->socket, p_dev->func, code, NULL,
1061 &loop, pcmcia_do_loop_tuple);
1063 EXPORT_SYMBOL(pcmcia_loop_tuple);
1066 struct pcmcia_loop_get {
1072 * pcmcia_do_get_tuple() - internal helper for pcmcia_get_tuple()
1074 * pcmcia_do_get_tuple() is the internal callback for the call from
1075 * pcmcia_get_tuple() to pcmcia_loop_tuple(). As we're only interested in
1076 * the first tuple, return 0 unconditionally. Create a memory buffer large
1077 * enough to hold the content of the tuple, and fill it with the tuple data.
1078 * The caller is responsible to free the buffer.
1080 static int pcmcia_do_get_tuple(struct pcmcia_device *p_dev, tuple_t *tuple,
1083 struct pcmcia_loop_get *get = priv;
1085 *get->buf = kzalloc(tuple->TupleDataLen, GFP_KERNEL);
1087 get->len = tuple->TupleDataLen;
1088 memcpy(*get->buf, tuple->TupleData, tuple->TupleDataLen);
1090 dev_dbg(&p_dev->dev, "do_get_tuple: out of memory\n");
1095 * pcmcia_get_tuple() - get first tuple from CIS
1096 * @p_dev: the struct pcmcia_device which we need to loop for.
1097 * @code: which CIS code shall we look for?
1098 * @buf: pointer to store the buffer to.
1100 * pcmcia_get_tuple() gets the content of the first CIS entry of type @code.
1101 * It returns the buffer length (or zero). The caller is responsible to free
1102 * the buffer passed in @buf.
1104 size_t pcmcia_get_tuple(struct pcmcia_device *p_dev, cisdata_t code,
1105 unsigned char **buf)
1107 struct pcmcia_loop_get get = {
1113 pcmcia_loop_tuple(p_dev, code, pcmcia_do_get_tuple, &get);
1117 EXPORT_SYMBOL(pcmcia_get_tuple);
1121 * pcmcia_do_get_mac() - internal helper for pcmcia_get_mac_from_cis()
1123 * pcmcia_do_get_mac() is the internal callback for the call from
1124 * pcmcia_get_mac_from_cis() to pcmcia_loop_tuple(). We check whether the
1125 * tuple contains a proper LAN_NODE_ID of length 6, and copy the data
1126 * to struct net_device->dev_addr[i].
1128 static int pcmcia_do_get_mac(struct pcmcia_device *p_dev, tuple_t *tuple,
1131 struct net_device *dev = priv;
1134 if (tuple->TupleData[0] != CISTPL_FUNCE_LAN_NODE_ID)
1136 if (tuple->TupleDataLen < ETH_ALEN + 2) {
1137 dev_warn(&p_dev->dev, "Invalid CIS tuple length for "
1142 if (tuple->TupleData[1] != ETH_ALEN) {
1143 dev_warn(&p_dev->dev, "Invalid header for LAN_NODE_ID\n");
1146 for (i = 0; i < 6; i++)
1147 dev->dev_addr[i] = tuple->TupleData[i+2];
1152 * pcmcia_get_mac_from_cis() - read out MAC address from CISTPL_FUNCE
1153 * @p_dev: the struct pcmcia_device for which we want the address.
1154 * @dev: a properly prepared struct net_device to store the info to.
1156 * pcmcia_get_mac_from_cis() reads out the hardware MAC address from
1157 * CISTPL_FUNCE and stores it into struct net_device *dev->dev_addr which
1158 * must be set up properly by the driver (see examples!).
1160 int pcmcia_get_mac_from_cis(struct pcmcia_device *p_dev, struct net_device *dev)
1162 return pcmcia_loop_tuple(p_dev, CISTPL_FUNCE, pcmcia_do_get_mac, dev);
1164 EXPORT_SYMBOL(pcmcia_get_mac_from_cis);