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)
194 c = p_dev->function_config;
196 if (!(c->state & CONFIG_LOCKED)) {
197 dev_dbg(&s->dev, "Configuration isnt't locked\n");
201 addr = (c->ConfigBase + reg->Offset) >> 1;
203 switch (reg->Action) {
205 pcmcia_read_cis_mem(s, 1, addr, 1, &val);
210 pcmcia_write_cis_mem(s, 1, addr, 1, &val);
213 dev_dbg(&s->dev, "Invalid conf register request\n");
218 } /* pcmcia_access_configuration_register */
219 EXPORT_SYMBOL(pcmcia_access_configuration_register);
222 int pcmcia_map_mem_page(struct pcmcia_device *p_dev, window_handle_t wh,
225 struct pcmcia_socket *s = p_dev->socket;
231 if (req->Page != 0) {
232 dev_dbg(&s->dev, "failure: requested page is zero\n");
235 mutex_lock(&s->ops_mutex);
236 s->win[wh].card_start = req->CardOffset;
237 ret = s->ops->set_mem_map(s, &s->win[wh]);
239 dev_warn(&s->dev, "failed to set_mem_map\n");
240 mutex_unlock(&s->ops_mutex);
242 } /* pcmcia_map_mem_page */
243 EXPORT_SYMBOL(pcmcia_map_mem_page);
246 /** pcmcia_modify_configuration
248 * Modify a locked socket configuration
250 int pcmcia_modify_configuration(struct pcmcia_device *p_dev,
253 struct pcmcia_socket *s;
257 c = p_dev->function_config;
259 if (!(s->state & SOCKET_PRESENT)) {
260 dev_dbg(&s->dev, "No card present\n");
263 if (!(c->state & CONFIG_LOCKED)) {
264 dev_dbg(&s->dev, "Configuration isnt't locked\n");
268 if (mod->Attributes & CONF_IRQ_CHANGE_VALID) {
269 if (mod->Attributes & CONF_ENABLE_IRQ) {
270 c->Attributes |= CONF_ENABLE_IRQ;
271 s->socket.io_irq = s->irq.AssignedIRQ;
273 c->Attributes &= ~CONF_ENABLE_IRQ;
274 s->socket.io_irq = 0;
276 s->ops->set_socket(s, &s->socket);
279 if (mod->Attributes & CONF_VCC_CHANGE_VALID) {
280 dev_dbg(&s->dev, "changing Vcc is not allowed at this time\n");
284 /* We only allow changing Vpp1 and Vpp2 to the same value */
285 if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) &&
286 (mod->Attributes & CONF_VPP2_CHANGE_VALID)) {
287 if (mod->Vpp1 != mod->Vpp2) {
288 dev_dbg(&s->dev, "Vpp1 and Vpp2 must be the same\n");
291 s->socket.Vpp = mod->Vpp1;
292 if (s->ops->set_socket(s, &s->socket)) {
293 dev_printk(KERN_WARNING, &s->dev,
294 "Unable to set VPP\n");
297 } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) ||
298 (mod->Attributes & CONF_VPP2_CHANGE_VALID)) {
299 dev_dbg(&s->dev, "changing Vcc is not allowed at this time\n");
303 if (mod->Attributes & CONF_IO_CHANGE_WIDTH) {
304 pccard_io_map io_off = { 0, 0, 0, 0, 1 };
308 io_on.speed = io_speed;
309 for (i = 0; i < MAX_IO_WIN; i++) {
315 io_on.flags = MAP_ACTIVE | IO_DATA_PATH_WIDTH_8;
316 io_on.start = s->io[i].res->start;
317 io_on.stop = s->io[i].res->end;
319 s->ops->set_io_map(s, &io_off);
321 s->ops->set_io_map(s, &io_on);
326 } /* modify_configuration */
327 EXPORT_SYMBOL(pcmcia_modify_configuration);
330 int pcmcia_release_configuration(struct pcmcia_device *p_dev)
332 pccard_io_map io = { 0, 0, 0, 0, 1 };
333 struct pcmcia_socket *s = p_dev->socket;
334 config_t *c = p_dev->function_config;
337 if (p_dev->_locked) {
339 if (--(s->lock_count) == 0) {
340 s->socket.flags = SS_OUTPUT_ENA; /* Is this correct? */
342 s->socket.io_irq = 0;
343 s->ops->set_socket(s, &s->socket);
346 if (c->state & CONFIG_LOCKED) {
347 c->state &= ~CONFIG_LOCKED;
348 if (c->state & CONFIG_IO_REQ)
349 for (i = 0; i < MAX_IO_WIN; i++) {
353 if (s->io[i].Config != 0)
356 s->ops->set_io_map(s, &io);
361 } /* pcmcia_release_configuration */
364 /** pcmcia_release_io
366 * Release_io() releases the I/O ranges allocated by a client. This
367 * may be invoked some time after a card ejection has already dumped
368 * the actual socket configuration, so if the client is "stale", we
369 * don't bother checking the port ranges against the current socket
372 static int pcmcia_release_io(struct pcmcia_device *p_dev, io_req_t *req)
374 struct pcmcia_socket *s = p_dev->socket;
375 config_t *c = p_dev->function_config;
382 if ((c->io.BasePort1 != req->BasePort1) ||
383 (c->io.NumPorts1 != req->NumPorts1) ||
384 (c->io.BasePort2 != req->BasePort2) ||
385 (c->io.NumPorts2 != req->NumPorts2))
388 c->state &= ~CONFIG_IO_REQ;
390 release_io_space(s, req->BasePort1, req->NumPorts1);
392 release_io_space(s, req->BasePort2, req->NumPorts2);
395 } /* pcmcia_release_io */
398 static int pcmcia_release_irq(struct pcmcia_device *p_dev, irq_req_t *req)
400 struct pcmcia_socket *s = p_dev->socket;
401 config_t *c = p_dev->function_config;
407 if (c->state & CONFIG_LOCKED)
409 if (c->irq.Attributes != req->Attributes) {
410 dev_dbg(&s->dev, "IRQ attributes must match assigned ones\n");
413 if (s->irq.AssignedIRQ != req->AssignedIRQ) {
414 dev_dbg(&s->dev, "IRQ must match assigned one\n");
417 if (--s->irq.Config == 0) {
418 c->state &= ~CONFIG_IRQ_REQ;
419 s->irq.AssignedIRQ = 0;
423 free_irq(req->AssignedIRQ, p_dev->priv);
425 #ifdef CONFIG_PCMCIA_PROBE
426 pcmcia_used_irq[req->AssignedIRQ]--;
430 } /* pcmcia_release_irq */
433 int pcmcia_release_window(struct pcmcia_device *p_dev, window_handle_t wh)
435 struct pcmcia_socket *s = p_dev->socket;
442 mutex_lock(&s->ops_mutex);
445 if (!(p_dev->_win & CLIENT_WIN_REQ(wh))) {
446 dev_dbg(&s->dev, "not releasing unknown window\n");
447 mutex_unlock(&s->ops_mutex);
451 /* Shut down memory window */
452 win->flags &= ~MAP_ACTIVE;
453 s->ops->set_mem_map(s, win);
454 s->state &= ~SOCKET_WIN_REQ(wh);
456 /* Release system memory */
458 release_resource(win->res);
462 p_dev->_win &= ~CLIENT_WIN_REQ(wh);
463 mutex_unlock(&s->ops_mutex);
466 } /* pcmcia_release_window */
467 EXPORT_SYMBOL(pcmcia_release_window);
470 int pcmcia_request_configuration(struct pcmcia_device *p_dev,
475 struct pcmcia_socket *s = p_dev->socket;
479 if (!(s->state & SOCKET_PRESENT))
482 if (req->IntType & INT_CARDBUS) {
483 dev_dbg(&s->dev, "IntType may not be INT_CARDBUS\n");
486 c = p_dev->function_config;
487 if (c->state & CONFIG_LOCKED) {
488 dev_dbg(&s->dev, "Configuration is locked\n");
492 /* Do power control. We don't allow changes in Vcc. */
493 s->socket.Vpp = req->Vpp;
494 if (s->ops->set_socket(s, &s->socket)) {
495 dev_printk(KERN_WARNING, &s->dev,
496 "Unable to set socket state\n");
500 /* Pick memory or I/O card, DMA mode, interrupt */
501 c->IntType = req->IntType;
502 c->Attributes = req->Attributes;
503 if (req->IntType & INT_MEMORY_AND_IO)
504 s->socket.flags |= SS_IOCARD;
505 if (req->IntType & INT_ZOOMED_VIDEO)
506 s->socket.flags |= SS_ZVCARD | SS_IOCARD;
507 if (req->Attributes & CONF_ENABLE_DMA)
508 s->socket.flags |= SS_DMA_MODE;
509 if (req->Attributes & CONF_ENABLE_SPKR)
510 s->socket.flags |= SS_SPKR_ENA;
511 if (req->Attributes & CONF_ENABLE_IRQ)
512 s->socket.io_irq = s->irq.AssignedIRQ;
514 s->socket.io_irq = 0;
515 s->ops->set_socket(s, &s->socket);
518 /* Set up CIS configuration registers */
519 base = c->ConfigBase = req->ConfigBase;
520 c->CardValues = req->Present;
521 if (req->Present & PRESENT_COPY) {
523 pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy);
525 if (req->Present & PRESENT_OPTION) {
526 if (s->functions == 1) {
527 c->Option = req->ConfigIndex & COR_CONFIG_MASK;
529 c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK;
530 c->Option |= COR_FUNC_ENA|COR_IREQ_ENA;
531 if (req->Present & PRESENT_IOBASE_0)
532 c->Option |= COR_ADDR_DECODE;
534 if (c->state & CONFIG_IRQ_REQ)
535 if (!(c->irq.Attributes & IRQ_FORCED_PULSE))
536 c->Option |= COR_LEVEL_REQ;
537 pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option);
540 if (req->Present & PRESENT_STATUS) {
541 c->Status = req->Status;
542 pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status);
544 if (req->Present & PRESENT_PIN_REPLACE) {
546 pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin);
548 if (req->Present & PRESENT_EXT_STATUS) {
549 c->ExtStatus = req->ExtStatus;
550 pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus);
552 if (req->Present & PRESENT_IOBASE_0) {
553 u_char b = c->io.BasePort1 & 0xff;
554 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b);
555 b = (c->io.BasePort1 >> 8) & 0xff;
556 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b);
558 if (req->Present & PRESENT_IOSIZE) {
559 u_char b = c->io.NumPorts1 + c->io.NumPorts2 - 1;
560 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b);
563 /* Configure I/O windows */
564 if (c->state & CONFIG_IO_REQ) {
565 iomap.speed = io_speed;
566 for (i = 0; i < MAX_IO_WIN; i++)
569 iomap.flags = MAP_ACTIVE;
570 switch (s->io[i].res->flags & IO_DATA_PATH_WIDTH) {
571 case IO_DATA_PATH_WIDTH_16:
572 iomap.flags |= MAP_16BIT; break;
573 case IO_DATA_PATH_WIDTH_AUTO:
574 iomap.flags |= MAP_AUTOSZ; break;
578 iomap.start = s->io[i].res->start;
579 iomap.stop = s->io[i].res->end;
580 s->ops->set_io_map(s, &iomap);
585 c->state |= CONFIG_LOCKED;
588 } /* pcmcia_request_configuration */
589 EXPORT_SYMBOL(pcmcia_request_configuration);
592 /** pcmcia_request_io
594 * Request_io() reserves ranges of port addresses for a socket.
595 * I have not implemented range sharing or alias addressing.
597 int pcmcia_request_io(struct pcmcia_device *p_dev, io_req_t *req)
599 struct pcmcia_socket *s = p_dev->socket;
602 if (!(s->state & SOCKET_PRESENT)) {
603 dev_dbg(&s->dev, "No card present\n");
609 c = p_dev->function_config;
610 if (c->state & CONFIG_LOCKED) {
611 dev_dbg(&s->dev, "Configuration is locked\n");
614 if (c->state & CONFIG_IO_REQ) {
615 dev_dbg(&s->dev, "IO already configured\n");
618 if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)) {
619 dev_dbg(&s->dev, "bad attribute setting for IO region 1\n");
622 if ((req->NumPorts2 > 0) &&
623 (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))) {
624 dev_dbg(&s->dev, "bad attribute setting for IO region 2\n");
628 dev_dbg(&s->dev, "trying to allocate resource 1\n");
629 if (alloc_io_space(s, req->Attributes1, &req->BasePort1,
630 req->NumPorts1, req->IOAddrLines)) {
631 dev_dbg(&s->dev, "allocation of resource 1 failed\n");
635 if (req->NumPorts2) {
636 dev_dbg(&s->dev, "trying to allocate resource 2\n");
637 if (alloc_io_space(s, req->Attributes2, &req->BasePort2,
638 req->NumPorts2, req->IOAddrLines)) {
639 dev_dbg(&s->dev, "allocation of resource 2 failed\n");
640 release_io_space(s, req->BasePort1, req->NumPorts1);
646 c->state |= CONFIG_IO_REQ;
649 } /* pcmcia_request_io */
650 EXPORT_SYMBOL(pcmcia_request_io);
653 /** pcmcia_request_irq
655 * Request_irq() reserves an irq for this client.
657 * Also, since Linux only reserves irq's when they are actually
658 * hooked, we don't guarantee that an irq will still be available
659 * when the configuration is locked. Now that I think about it,
660 * there might be a way to fix this using a dummy handler.
663 #ifdef CONFIG_PCMCIA_PROBE
664 static irqreturn_t test_action(int cpl, void *dev_id)
670 int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req)
672 struct pcmcia_socket *s = p_dev->socket;
674 int ret = -EINVAL, irq = 0;
677 if (!(s->state & SOCKET_PRESENT)) {
678 dev_dbg(&s->dev, "No card present\n");
681 c = p_dev->function_config;
682 if (c->state & CONFIG_LOCKED) {
683 dev_dbg(&s->dev, "Configuration is locked\n");
686 if (c->state & CONFIG_IRQ_REQ) {
687 dev_dbg(&s->dev, "IRQ already configured\n");
691 /* Decide what type of interrupt we are registering */
693 if (s->functions > 1) /* All of this ought to be handled higher up */
695 else if (req->Attributes & IRQ_TYPE_DYNAMIC_SHARING)
698 printk(KERN_WARNING "pcmcia: Driver needs updating to support IRQ sharing.\n");
700 #ifdef CONFIG_PCMCIA_PROBE
703 /* if the underlying IRQ infrastructure allows for it, only allocate
704 * the IRQ, but do not enable it
707 type |= IRQ_NOAUTOEN;
708 #endif /* IRQ_NOAUTOEN */
710 if (s->irq.AssignedIRQ != 0) {
711 /* If the interrupt is already assigned, it must be the same */
712 irq = s->irq.AssignedIRQ;
715 u32 mask = s->irq_mask;
716 void *data = p_dev; /* something unique to this device */
718 for (try = 0; try < 64; try++) {
721 /* marked as available by driver, and not blocked by userspace? */
722 if (!((mask >> irq) & 1))
725 /* avoid an IRQ which is already used by a PCMCIA card */
726 if ((try < 32) && pcmcia_used_irq[irq])
729 /* register the correct driver, if possible, of check whether
730 * registering a dummy handle works, i.e. if the IRQ isn't
731 * marked as used by the kernel resource management core */
732 ret = request_irq(irq,
733 (req->Handler) ? req->Handler : test_action,
736 (req->Handler) ? p_dev->priv : data);
745 /* only assign PCI irq if no IRQ already assigned */
746 if (ret && !s->irq.AssignedIRQ) {
748 dev_printk(KERN_INFO, &s->dev, "no IRQ found\n");
755 if (ret && req->Handler) {
756 ret = request_irq(irq, req->Handler, type,
757 p_dev->devname, p_dev->priv);
759 dev_printk(KERN_INFO, &s->dev,
760 "request_irq() failed\n");
765 /* Make sure the fact the request type was overridden is passed back */
766 if (type == IRQF_SHARED && !(req->Attributes & IRQ_TYPE_DYNAMIC_SHARING)) {
767 req->Attributes |= IRQ_TYPE_DYNAMIC_SHARING;
768 dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: "
769 "request for exclusive IRQ could not be fulfilled.\n");
770 dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: the driver "
771 "needs updating to supported shared IRQ lines.\n");
773 c->irq.Attributes = req->Attributes;
774 s->irq.AssignedIRQ = req->AssignedIRQ = irq;
777 c->state |= CONFIG_IRQ_REQ;
780 #ifdef CONFIG_PCMCIA_PROBE
781 pcmcia_used_irq[irq]++;
785 } /* pcmcia_request_irq */
786 EXPORT_SYMBOL(pcmcia_request_irq);
789 /** pcmcia_request_window
791 * Request_window() establishes a mapping between card memory space
792 * and system memory space.
794 int pcmcia_request_window(struct pcmcia_device *p_dev, win_req_t *req, window_handle_t *wh)
796 struct pcmcia_socket *s = p_dev->socket;
801 if (!(s->state & SOCKET_PRESENT)) {
802 dev_dbg(&s->dev, "No card present\n");
805 if (req->Attributes & (WIN_PAGED | WIN_SHARED)) {
806 dev_dbg(&s->dev, "bad attribute setting for iomem region\n");
810 /* Window size defaults to smallest available */
812 req->Size = s->map_size;
813 align = (((s->features & SS_CAP_MEM_ALIGN) ||
814 (req->Attributes & WIN_STRICT_ALIGN)) ?
815 req->Size : s->map_size);
816 if (req->Size & (s->map_size-1)) {
817 dev_dbg(&s->dev, "invalid map size\n");
820 if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) ||
821 (req->Base & (align-1))) {
822 dev_dbg(&s->dev, "invalid base address\n");
828 /* Allocate system memory window */
829 for (w = 0; w < MAX_WIN; w++)
830 if (!(s->state & SOCKET_WIN_REQ(w)))
833 dev_dbg(&s->dev, "all windows are used already\n");
837 mutex_lock(&s->ops_mutex);
840 if (!(s->features & SS_CAP_STATIC_MAP)) {
841 win->res = pcmcia_find_mem_region(req->Base, req->Size, align,
842 (req->Attributes & WIN_MAP_BELOW_1MB), s);
844 dev_dbg(&s->dev, "allocating mem region failed\n");
845 mutex_unlock(&s->ops_mutex);
849 p_dev->_win |= CLIENT_WIN_REQ(w);
851 /* Configure the socket controller */
854 win->speed = req->AccessSpeed;
855 if (req->Attributes & WIN_MEMORY_TYPE)
856 win->flags |= MAP_ATTRIB;
857 if (req->Attributes & WIN_ENABLE)
858 win->flags |= MAP_ACTIVE;
859 if (req->Attributes & WIN_DATA_WIDTH_16)
860 win->flags |= MAP_16BIT;
861 if (req->Attributes & WIN_USE_WAIT)
862 win->flags |= MAP_USE_WAIT;
865 if (s->ops->set_mem_map(s, win) != 0) {
866 dev_dbg(&s->dev, "failed to set memory mapping\n");
867 mutex_unlock(&s->ops_mutex);
870 s->state |= SOCKET_WIN_REQ(w);
872 /* Return window handle */
873 if (s->features & SS_CAP_STATIC_MAP)
874 req->Base = win->static_start;
876 req->Base = win->res->start;
878 mutex_unlock(&s->ops_mutex);
882 } /* pcmcia_request_window */
883 EXPORT_SYMBOL(pcmcia_request_window);
885 void pcmcia_disable_device(struct pcmcia_device *p_dev)
887 pcmcia_release_configuration(p_dev);
888 pcmcia_release_io(p_dev, &p_dev->io);
889 pcmcia_release_irq(p_dev, &p_dev->irq);
891 pcmcia_release_window(p_dev, p_dev->win);
893 EXPORT_SYMBOL(pcmcia_disable_device);
896 struct pcmcia_cfg_mem {
897 struct pcmcia_device *p_dev;
899 int (*conf_check) (struct pcmcia_device *p_dev,
900 cistpl_cftable_entry_t *cfg,
901 cistpl_cftable_entry_t *dflt,
905 cistpl_cftable_entry_t dflt;
909 * pcmcia_do_loop_config() - internal helper for pcmcia_loop_config()
911 * pcmcia_do_loop_config() is the internal callback for the call from
912 * pcmcia_loop_config() to pccard_loop_tuple(). Data is transferred
913 * by a struct pcmcia_cfg_mem.
915 static int pcmcia_do_loop_config(tuple_t *tuple, cisparse_t *parse, void *priv)
917 cistpl_cftable_entry_t *cfg = &parse->cftable_entry;
918 struct pcmcia_cfg_mem *cfg_mem = priv;
921 cfg_mem->p_dev->conf.ConfigIndex = cfg->index;
922 if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
923 cfg_mem->dflt = *cfg;
925 return cfg_mem->conf_check(cfg_mem->p_dev, cfg, &cfg_mem->dflt,
926 cfg_mem->p_dev->socket->socket.Vcc,
931 * pcmcia_loop_config() - loop over configuration options
932 * @p_dev: the struct pcmcia_device which we need to loop for.
933 * @conf_check: function to call for each configuration option.
934 * It gets passed the struct pcmcia_device, the CIS data
935 * describing the configuration option, and private data
936 * being passed to pcmcia_loop_config()
937 * @priv_data: private data to be passed to the conf_check function.
939 * pcmcia_loop_config() loops over all configuration options, and calls
940 * the driver-specific conf_check() for each one, checking whether
941 * it is a valid one. Returns 0 on success or errorcode otherwise.
943 int pcmcia_loop_config(struct pcmcia_device *p_dev,
944 int (*conf_check) (struct pcmcia_device *p_dev,
945 cistpl_cftable_entry_t *cfg,
946 cistpl_cftable_entry_t *dflt,
951 struct pcmcia_cfg_mem *cfg_mem;
954 cfg_mem = kzalloc(sizeof(struct pcmcia_cfg_mem), GFP_KERNEL);
958 cfg_mem->p_dev = p_dev;
959 cfg_mem->conf_check = conf_check;
960 cfg_mem->priv_data = priv_data;
962 ret = pccard_loop_tuple(p_dev->socket, p_dev->func,
963 CISTPL_CFTABLE_ENTRY, &cfg_mem->parse,
964 cfg_mem, pcmcia_do_loop_config);
969 EXPORT_SYMBOL(pcmcia_loop_config);
972 struct pcmcia_loop_mem {
973 struct pcmcia_device *p_dev;
975 int (*loop_tuple) (struct pcmcia_device *p_dev,
981 * pcmcia_do_loop_tuple() - internal helper for pcmcia_loop_config()
983 * pcmcia_do_loop_tuple() is the internal callback for the call from
984 * pcmcia_loop_tuple() to pccard_loop_tuple(). Data is transferred
985 * by a struct pcmcia_cfg_mem.
987 static int pcmcia_do_loop_tuple(tuple_t *tuple, cisparse_t *parse, void *priv)
989 struct pcmcia_loop_mem *loop = priv;
991 return loop->loop_tuple(loop->p_dev, tuple, loop->priv_data);
995 * pcmcia_loop_tuple() - loop over tuples in the CIS
996 * @p_dev: the struct pcmcia_device which we need to loop for.
997 * @code: which CIS code shall we look for?
998 * @priv_data: private data to be passed to the loop_tuple function.
999 * @loop_tuple: function to call for each CIS entry of type @function. IT
1000 * gets passed the raw tuple and @priv_data.
1002 * pcmcia_loop_tuple() loops over all CIS entries of type @function, and
1003 * calls the @loop_tuple function for each entry. If the call to @loop_tuple
1004 * returns 0, the loop exits. Returns 0 on success or errorcode otherwise.
1006 int pcmcia_loop_tuple(struct pcmcia_device *p_dev, cisdata_t code,
1007 int (*loop_tuple) (struct pcmcia_device *p_dev,
1012 struct pcmcia_loop_mem loop = {
1014 .loop_tuple = loop_tuple,
1015 .priv_data = priv_data};
1017 return pccard_loop_tuple(p_dev->socket, p_dev->func, code, NULL,
1018 &loop, pcmcia_do_loop_tuple);
1020 EXPORT_SYMBOL(pcmcia_loop_tuple);
1023 struct pcmcia_loop_get {
1029 * pcmcia_do_get_tuple() - internal helper for pcmcia_get_tuple()
1031 * pcmcia_do_get_tuple() is the internal callback for the call from
1032 * pcmcia_get_tuple() to pcmcia_loop_tuple(). As we're only interested in
1033 * the first tuple, return 0 unconditionally. Create a memory buffer large
1034 * enough to hold the content of the tuple, and fill it with the tuple data.
1035 * The caller is responsible to free the buffer.
1037 static int pcmcia_do_get_tuple(struct pcmcia_device *p_dev, tuple_t *tuple,
1040 struct pcmcia_loop_get *get = priv;
1042 *get->buf = kzalloc(tuple->TupleDataLen, GFP_KERNEL);
1044 get->len = tuple->TupleDataLen;
1045 memcpy(*get->buf, tuple->TupleData, tuple->TupleDataLen);
1047 dev_dbg(&p_dev->dev, "do_get_tuple: out of memory\n");
1052 * pcmcia_get_tuple() - get first tuple from CIS
1053 * @p_dev: the struct pcmcia_device which we need to loop for.
1054 * @code: which CIS code shall we look for?
1055 * @buf: pointer to store the buffer to.
1057 * pcmcia_get_tuple() gets the content of the first CIS entry of type @code.
1058 * It returns the buffer length (or zero). The caller is responsible to free
1059 * the buffer passed in @buf.
1061 size_t pcmcia_get_tuple(struct pcmcia_device *p_dev, cisdata_t code,
1062 unsigned char **buf)
1064 struct pcmcia_loop_get get = {
1070 pcmcia_loop_tuple(p_dev, code, pcmcia_do_get_tuple, &get);
1074 EXPORT_SYMBOL(pcmcia_get_tuple);
1078 * pcmcia_do_get_mac() - internal helper for pcmcia_get_mac_from_cis()
1080 * pcmcia_do_get_mac() is the internal callback for the call from
1081 * pcmcia_get_mac_from_cis() to pcmcia_loop_tuple(). We check whether the
1082 * tuple contains a proper LAN_NODE_ID of length 6, and copy the data
1083 * to struct net_device->dev_addr[i].
1085 static int pcmcia_do_get_mac(struct pcmcia_device *p_dev, tuple_t *tuple,
1088 struct net_device *dev = priv;
1091 if (tuple->TupleData[0] != CISTPL_FUNCE_LAN_NODE_ID)
1093 if (tuple->TupleDataLen < ETH_ALEN + 2) {
1094 dev_warn(&p_dev->dev, "Invalid CIS tuple length for "
1099 if (tuple->TupleData[1] != ETH_ALEN) {
1100 dev_warn(&p_dev->dev, "Invalid header for LAN_NODE_ID\n");
1103 for (i = 0; i < 6; i++)
1104 dev->dev_addr[i] = tuple->TupleData[i+2];
1109 * pcmcia_get_mac_from_cis() - read out MAC address from CISTPL_FUNCE
1110 * @p_dev: the struct pcmcia_device for which we want the address.
1111 * @dev: a properly prepared struct net_device to store the info to.
1113 * pcmcia_get_mac_from_cis() reads out the hardware MAC address from
1114 * CISTPL_FUNCE and stores it into struct net_device *dev->dev_addr which
1115 * must be set up properly by the driver (see examples!).
1117 int pcmcia_get_mac_from_cis(struct pcmcia_device *p_dev, struct net_device *dev)
1119 return pcmcia_loop_tuple(p_dev, CISTPL_FUNCE, pcmcia_do_get_mac, dev);
1121 EXPORT_SYMBOL(pcmcia_get_mac_from_cis);