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);
66 * Special stuff for managing IO windows, because they are scarce
69 static int alloc_io_space(struct pcmcia_socket *s, u_int attr,
70 unsigned int *base, unsigned int num, u_int lines)
73 unsigned int try, align;
75 align = (*base) ? (lines ? 1<<lines : 0) : 1;
76 if (align && (align < num)) {
78 dev_dbg(&s->dev, "odd IO request: num %#x align %#x\n",
82 while (align && (align < num))
85 if (*base & ~(align-1)) {
86 dev_dbg(&s->dev, "odd IO request: base %#x align %#x\n",
90 if ((s->features & SS_CAP_STATIC_MAP) && s->io_offset) {
91 *base = s->io_offset | (*base & 0x0fff);
94 /* Check for an already-allocated window that must conflict with
95 * what was asked for. It is a hack because it does not catch all
96 * potential conflicts, just the most obvious ones.
98 for (i = 0; i < MAX_IO_WIN; i++)
99 if ((s->io[i].res) && *base &&
100 ((s->io[i].res->start & (align-1)) == *base))
102 for (i = 0; i < MAX_IO_WIN; i++) {
104 s->io[i].res = pcmcia_find_io_region(*base, num, align, s);
106 *base = s->io[i].res->start;
107 s->io[i].res->flags = (s->io[i].res->flags & ~IORESOURCE_BITS) | (attr & IORESOURCE_BITS);
108 s->io[i].InUse = num;
112 } else if ((s->io[i].res->flags & IORESOURCE_BITS) != (attr & IORESOURCE_BITS))
114 /* Try to extend top of window */
115 try = s->io[i].res->end + 1;
116 if ((*base == 0) || (*base == try))
117 if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start,
118 s->io[i].res->end + num, s) == 0) {
120 s->io[i].InUse += num;
123 /* Try to extend bottom of window */
124 try = s->io[i].res->start - num;
125 if ((*base == 0) || (*base == try))
126 if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start - num,
127 s->io[i].res->end, s) == 0) {
129 s->io[i].InUse += num;
133 return (i == MAX_IO_WIN);
134 } /* alloc_io_space */
137 static void release_io_space(struct pcmcia_socket *s, unsigned int base,
142 for (i = 0; i < MAX_IO_WIN; i++) {
145 if ((s->io[i].res->start <= base) &&
146 (s->io[i].res->end >= base+num-1)) {
147 s->io[i].InUse -= num;
148 /* Free the window if no one else is using it */
149 if (s->io[i].InUse == 0) {
150 release_resource(s->io[i].res);
156 } /* release_io_space */
159 /** pccard_access_configuration_register
161 * Access_configuration_register() reads and writes configuration
162 * registers in attribute memory. Memory window 0 is reserved for
163 * this and the tuple reading services.
166 int pcmcia_access_configuration_register(struct pcmcia_device *p_dev,
169 struct pcmcia_socket *s;
174 if (!p_dev || !p_dev->function_config)
178 c = p_dev->function_config;
180 if (!(c->state & CONFIG_LOCKED)) {
181 dev_dbg(&s->dev, "Configuration isnt't locked\n");
185 addr = (c->ConfigBase + reg->Offset) >> 1;
187 switch (reg->Action) {
189 pcmcia_read_cis_mem(s, 1, addr, 1, &val);
194 pcmcia_write_cis_mem(s, 1, addr, 1, &val);
197 dev_dbg(&s->dev, "Invalid conf register request\n");
202 } /* pcmcia_access_configuration_register */
203 EXPORT_SYMBOL(pcmcia_access_configuration_register);
206 int pcmcia_map_mem_page(struct pcmcia_device *p_dev, window_handle_t wh,
209 struct pcmcia_socket *s = p_dev->socket;
214 if (req->Page != 0) {
215 dev_dbg(&s->dev, "failure: requested page is zero\n");
218 s->win[wh].card_start = req->CardOffset;
219 if (s->ops->set_mem_map(s, &s->win[wh]) != 0) {
220 dev_dbg(&s->dev, "failed to set_mem_map\n");
224 } /* pcmcia_map_mem_page */
225 EXPORT_SYMBOL(pcmcia_map_mem_page);
228 /** pcmcia_modify_configuration
230 * Modify a locked socket configuration
232 int pcmcia_modify_configuration(struct pcmcia_device *p_dev,
235 struct pcmcia_socket *s;
239 c = p_dev->function_config;
241 if (!(s->state & SOCKET_PRESENT)) {
242 dev_dbg(&s->dev, "No card present\n");
245 if (!(c->state & CONFIG_LOCKED)) {
246 dev_dbg(&s->dev, "Configuration isnt't locked\n");
250 if (mod->Attributes & CONF_IRQ_CHANGE_VALID) {
251 if (mod->Attributes & CONF_ENABLE_IRQ) {
252 c->Attributes |= CONF_ENABLE_IRQ;
253 s->socket.io_irq = s->irq.AssignedIRQ;
255 c->Attributes &= ~CONF_ENABLE_IRQ;
256 s->socket.io_irq = 0;
258 s->ops->set_socket(s, &s->socket);
261 if (mod->Attributes & CONF_VCC_CHANGE_VALID) {
262 dev_dbg(&s->dev, "changing Vcc is not allowed at this time\n");
266 /* We only allow changing Vpp1 and Vpp2 to the same value */
267 if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) &&
268 (mod->Attributes & CONF_VPP2_CHANGE_VALID)) {
269 if (mod->Vpp1 != mod->Vpp2) {
270 dev_dbg(&s->dev, "Vpp1 and Vpp2 must be the same\n");
273 s->socket.Vpp = mod->Vpp1;
274 if (s->ops->set_socket(s, &s->socket)) {
275 dev_printk(KERN_WARNING, &s->dev,
276 "Unable to set VPP\n");
279 } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) ||
280 (mod->Attributes & CONF_VPP2_CHANGE_VALID)) {
281 dev_dbg(&s->dev, "changing Vcc is not allowed at this time\n");
285 if (mod->Attributes & CONF_IO_CHANGE_WIDTH) {
286 pccard_io_map io_off = { 0, 0, 0, 0, 1 };
290 io_on.speed = io_speed;
291 for (i = 0; i < MAX_IO_WIN; i++) {
297 io_on.flags = MAP_ACTIVE | IO_DATA_PATH_WIDTH_8;
298 io_on.start = s->io[i].res->start;
299 io_on.stop = s->io[i].res->end;
301 s->ops->set_io_map(s, &io_off);
303 s->ops->set_io_map(s, &io_on);
308 } /* modify_configuration */
309 EXPORT_SYMBOL(pcmcia_modify_configuration);
312 int pcmcia_release_configuration(struct pcmcia_device *p_dev)
314 pccard_io_map io = { 0, 0, 0, 0, 1 };
315 struct pcmcia_socket *s = p_dev->socket;
316 config_t *c = p_dev->function_config;
319 if (p_dev->_locked) {
321 if (--(s->lock_count) == 0) {
322 s->socket.flags = SS_OUTPUT_ENA; /* Is this correct? */
324 s->socket.io_irq = 0;
325 s->ops->set_socket(s, &s->socket);
328 if (c->state & CONFIG_LOCKED) {
329 c->state &= ~CONFIG_LOCKED;
330 if (c->state & CONFIG_IO_REQ)
331 for (i = 0; i < MAX_IO_WIN; i++) {
335 if (s->io[i].Config != 0)
338 s->ops->set_io_map(s, &io);
343 } /* pcmcia_release_configuration */
346 /** pcmcia_release_io
348 * Release_io() releases the I/O ranges allocated by a client. This
349 * may be invoked some time after a card ejection has already dumped
350 * the actual socket configuration, so if the client is "stale", we
351 * don't bother checking the port ranges against the current socket
354 static int pcmcia_release_io(struct pcmcia_device *p_dev, io_req_t *req)
356 struct pcmcia_socket *s = p_dev->socket;
357 config_t *c = p_dev->function_config;
364 if ((c->io.BasePort1 != req->BasePort1) ||
365 (c->io.NumPorts1 != req->NumPorts1) ||
366 (c->io.BasePort2 != req->BasePort2) ||
367 (c->io.NumPorts2 != req->NumPorts2))
370 c->state &= ~CONFIG_IO_REQ;
372 release_io_space(s, req->BasePort1, req->NumPorts1);
374 release_io_space(s, req->BasePort2, req->NumPorts2);
377 } /* pcmcia_release_io */
380 static int pcmcia_release_irq(struct pcmcia_device *p_dev, irq_req_t *req)
382 struct pcmcia_socket *s = p_dev->socket;
383 config_t *c = p_dev->function_config;
389 if (c->state & CONFIG_LOCKED)
391 if (c->irq.Attributes != req->Attributes) {
392 dev_dbg(&s->dev, "IRQ attributes must match assigned ones\n");
395 if (s->irq.AssignedIRQ != req->AssignedIRQ) {
396 dev_dbg(&s->dev, "IRQ must match assigned one\n");
399 if (--s->irq.Config == 0) {
400 c->state &= ~CONFIG_IRQ_REQ;
401 s->irq.AssignedIRQ = 0;
405 free_irq(req->AssignedIRQ, p_dev->priv);
407 #ifdef CONFIG_PCMCIA_PROBE
408 pcmcia_used_irq[req->AssignedIRQ]--;
412 } /* pcmcia_release_irq */
415 int pcmcia_release_window(struct pcmcia_device *p_dev, window_handle_t wh)
417 struct pcmcia_socket *s = p_dev->socket;
426 if (!(p_dev->_win & CLIENT_WIN_REQ(wh))) {
427 dev_dbg(&s->dev, "not releasing unknown window\n");
431 /* Shut down memory window */
432 win->flags &= ~MAP_ACTIVE;
433 s->ops->set_mem_map(s, win);
434 s->state &= ~SOCKET_WIN_REQ(wh);
436 /* Release system memory */
438 release_resource(win->res);
442 p_dev->_win &= ~CLIENT_WIN_REQ(wh);
445 } /* pcmcia_release_window */
446 EXPORT_SYMBOL(pcmcia_release_window);
449 int pcmcia_request_configuration(struct pcmcia_device *p_dev,
454 struct pcmcia_socket *s = p_dev->socket;
458 if (!(s->state & SOCKET_PRESENT))
461 if (req->IntType & INT_CARDBUS) {
462 dev_dbg(&s->dev, "IntType may not be INT_CARDBUS\n");
465 c = p_dev->function_config;
466 if (c->state & CONFIG_LOCKED) {
467 dev_dbg(&s->dev, "Configuration is locked\n");
471 /* Do power control. We don't allow changes in Vcc. */
472 s->socket.Vpp = req->Vpp;
473 if (s->ops->set_socket(s, &s->socket)) {
474 dev_printk(KERN_WARNING, &s->dev,
475 "Unable to set socket state\n");
479 /* Pick memory or I/O card, DMA mode, interrupt */
480 c->IntType = req->IntType;
481 c->Attributes = req->Attributes;
482 if (req->IntType & INT_MEMORY_AND_IO)
483 s->socket.flags |= SS_IOCARD;
484 if (req->IntType & INT_ZOOMED_VIDEO)
485 s->socket.flags |= SS_ZVCARD | SS_IOCARD;
486 if (req->Attributes & CONF_ENABLE_DMA)
487 s->socket.flags |= SS_DMA_MODE;
488 if (req->Attributes & CONF_ENABLE_SPKR)
489 s->socket.flags |= SS_SPKR_ENA;
490 if (req->Attributes & CONF_ENABLE_IRQ)
491 s->socket.io_irq = s->irq.AssignedIRQ;
493 s->socket.io_irq = 0;
494 s->ops->set_socket(s, &s->socket);
497 /* Set up CIS configuration registers */
498 base = c->ConfigBase = req->ConfigBase;
499 c->CardValues = req->Present;
500 if (req->Present & PRESENT_COPY) {
502 pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy);
504 if (req->Present & PRESENT_OPTION) {
505 if (s->functions == 1) {
506 c->Option = req->ConfigIndex & COR_CONFIG_MASK;
508 c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK;
509 c->Option |= COR_FUNC_ENA|COR_IREQ_ENA;
510 if (req->Present & PRESENT_IOBASE_0)
511 c->Option |= COR_ADDR_DECODE;
513 if (c->state & CONFIG_IRQ_REQ)
514 if (!(c->irq.Attributes & IRQ_FORCED_PULSE))
515 c->Option |= COR_LEVEL_REQ;
516 pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option);
519 if (req->Present & PRESENT_STATUS) {
520 c->Status = req->Status;
521 pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status);
523 if (req->Present & PRESENT_PIN_REPLACE) {
525 pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin);
527 if (req->Present & PRESENT_EXT_STATUS) {
528 c->ExtStatus = req->ExtStatus;
529 pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus);
531 if (req->Present & PRESENT_IOBASE_0) {
532 u_char b = c->io.BasePort1 & 0xff;
533 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b);
534 b = (c->io.BasePort1 >> 8) & 0xff;
535 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b);
537 if (req->Present & PRESENT_IOSIZE) {
538 u_char b = c->io.NumPorts1 + c->io.NumPorts2 - 1;
539 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b);
542 /* Configure I/O windows */
543 if (c->state & CONFIG_IO_REQ) {
544 iomap.speed = io_speed;
545 for (i = 0; i < MAX_IO_WIN; i++)
548 iomap.flags = MAP_ACTIVE;
549 switch (s->io[i].res->flags & IO_DATA_PATH_WIDTH) {
550 case IO_DATA_PATH_WIDTH_16:
551 iomap.flags |= MAP_16BIT; break;
552 case IO_DATA_PATH_WIDTH_AUTO:
553 iomap.flags |= MAP_AUTOSZ; break;
557 iomap.start = s->io[i].res->start;
558 iomap.stop = s->io[i].res->end;
559 s->ops->set_io_map(s, &iomap);
564 c->state |= CONFIG_LOCKED;
567 } /* pcmcia_request_configuration */
568 EXPORT_SYMBOL(pcmcia_request_configuration);
571 /** pcmcia_request_io
573 * Request_io() reserves ranges of port addresses for a socket.
574 * I have not implemented range sharing or alias addressing.
576 int pcmcia_request_io(struct pcmcia_device *p_dev, io_req_t *req)
578 struct pcmcia_socket *s = p_dev->socket;
581 if (!(s->state & SOCKET_PRESENT)) {
582 dev_dbg(&s->dev, "No card present\n");
588 c = p_dev->function_config;
589 if (c->state & CONFIG_LOCKED) {
590 dev_dbg(&s->dev, "Configuration is locked\n");
593 if (c->state & CONFIG_IO_REQ) {
594 dev_dbg(&s->dev, "IO already configured\n");
597 if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)) {
598 dev_dbg(&s->dev, "bad attribute setting for IO region 1\n");
601 if ((req->NumPorts2 > 0) &&
602 (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))) {
603 dev_dbg(&s->dev, "bad attribute setting for IO region 2\n");
607 dev_dbg(&s->dev, "trying to allocate resource 1\n");
608 if (alloc_io_space(s, req->Attributes1, &req->BasePort1,
609 req->NumPorts1, req->IOAddrLines)) {
610 dev_dbg(&s->dev, "allocation of resource 1 failed\n");
614 if (req->NumPorts2) {
615 dev_dbg(&s->dev, "trying to allocate resource 2\n");
616 if (alloc_io_space(s, req->Attributes2, &req->BasePort2,
617 req->NumPorts2, req->IOAddrLines)) {
618 dev_dbg(&s->dev, "allocation of resource 2 failed\n");
619 release_io_space(s, req->BasePort1, req->NumPorts1);
625 c->state |= CONFIG_IO_REQ;
628 } /* pcmcia_request_io */
629 EXPORT_SYMBOL(pcmcia_request_io);
632 /** pcmcia_request_irq
634 * Request_irq() reserves an irq for this client.
636 * Also, since Linux only reserves irq's when they are actually
637 * hooked, we don't guarantee that an irq will still be available
638 * when the configuration is locked. Now that I think about it,
639 * there might be a way to fix this using a dummy handler.
642 #ifdef CONFIG_PCMCIA_PROBE
643 static irqreturn_t test_action(int cpl, void *dev_id)
649 int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req)
651 struct pcmcia_socket *s = p_dev->socket;
653 int ret = -EINVAL, irq = 0;
656 if (!(s->state & SOCKET_PRESENT)) {
657 dev_dbg(&s->dev, "No card present\n");
660 c = p_dev->function_config;
661 if (c->state & CONFIG_LOCKED) {
662 dev_dbg(&s->dev, "Configuration is locked\n");
665 if (c->state & CONFIG_IRQ_REQ) {
666 dev_dbg(&s->dev, "IRQ already configured\n");
670 /* Decide what type of interrupt we are registering */
672 if (s->functions > 1) /* All of this ought to be handled higher up */
674 else if (req->Attributes & IRQ_TYPE_DYNAMIC_SHARING)
677 printk(KERN_WARNING "pcmcia: Driver needs updating to support IRQ sharing.\n");
679 #ifdef CONFIG_PCMCIA_PROBE
682 /* if the underlying IRQ infrastructure allows for it, only allocate
683 * the IRQ, but do not enable it
686 type |= IRQ_NOAUTOEN;
687 #endif /* IRQ_NOAUTOEN */
689 if (s->irq.AssignedIRQ != 0) {
690 /* If the interrupt is already assigned, it must be the same */
691 irq = s->irq.AssignedIRQ;
694 u32 mask = s->irq_mask;
695 void *data = p_dev; /* something unique to this device */
697 for (try = 0; try < 64; try++) {
700 /* marked as available by driver, and not blocked by userspace? */
701 if (!((mask >> irq) & 1))
704 /* avoid an IRQ which is already used by a PCMCIA card */
705 if ((try < 32) && pcmcia_used_irq[irq])
708 /* register the correct driver, if possible, of check whether
709 * registering a dummy handle works, i.e. if the IRQ isn't
710 * marked as used by the kernel resource management core */
711 ret = request_irq(irq,
712 (req->Handler) ? req->Handler : test_action,
715 (req->Handler) ? p_dev->priv : data);
724 /* only assign PCI irq if no IRQ already assigned */
725 if (ret && !s->irq.AssignedIRQ) {
727 dev_printk(KERN_INFO, &s->dev, "no IRQ found\n");
734 if (ret && req->Handler) {
735 ret = request_irq(irq, req->Handler, type,
736 p_dev->devname, p_dev->priv);
738 dev_printk(KERN_INFO, &s->dev,
739 "request_irq() failed\n");
744 /* Make sure the fact the request type was overridden is passed back */
745 if (type == IRQF_SHARED && !(req->Attributes & IRQ_TYPE_DYNAMIC_SHARING)) {
746 req->Attributes |= IRQ_TYPE_DYNAMIC_SHARING;
747 dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: "
748 "request for exclusive IRQ could not be fulfilled.\n");
749 dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: the driver "
750 "needs updating to supported shared IRQ lines.\n");
752 c->irq.Attributes = req->Attributes;
753 s->irq.AssignedIRQ = req->AssignedIRQ = irq;
756 c->state |= CONFIG_IRQ_REQ;
759 #ifdef CONFIG_PCMCIA_PROBE
760 pcmcia_used_irq[irq]++;
764 } /* pcmcia_request_irq */
765 EXPORT_SYMBOL(pcmcia_request_irq);
768 /** pcmcia_request_window
770 * Request_window() establishes a mapping between card memory space
771 * and system memory space.
773 int pcmcia_request_window(struct pcmcia_device *p_dev, win_req_t *req, window_handle_t *wh)
775 struct pcmcia_socket *s = p_dev->socket;
780 if (!(s->state & SOCKET_PRESENT)) {
781 dev_dbg(&s->dev, "No card present\n");
784 if (req->Attributes & (WIN_PAGED | WIN_SHARED)) {
785 dev_dbg(&s->dev, "bad attribute setting for iomem region\n");
789 /* Window size defaults to smallest available */
791 req->Size = s->map_size;
792 align = (((s->features & SS_CAP_MEM_ALIGN) ||
793 (req->Attributes & WIN_STRICT_ALIGN)) ?
794 req->Size : s->map_size);
795 if (req->Size & (s->map_size-1)) {
796 dev_dbg(&s->dev, "invalid map size\n");
799 if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) ||
800 (req->Base & (align-1))) {
801 dev_dbg(&s->dev, "invalid base address\n");
807 /* Allocate system memory window */
808 for (w = 0; w < MAX_WIN; w++)
809 if (!(s->state & SOCKET_WIN_REQ(w)))
812 dev_dbg(&s->dev, "all windows are used already\n");
818 if (!(s->features & SS_CAP_STATIC_MAP)) {
819 win->res = pcmcia_find_mem_region(req->Base, req->Size, align,
820 (req->Attributes & WIN_MAP_BELOW_1MB), s);
822 dev_dbg(&s->dev, "allocating mem region failed\n");
826 p_dev->_win |= CLIENT_WIN_REQ(w);
828 /* Configure the socket controller */
831 win->speed = req->AccessSpeed;
832 if (req->Attributes & WIN_MEMORY_TYPE)
833 win->flags |= MAP_ATTRIB;
834 if (req->Attributes & WIN_ENABLE)
835 win->flags |= MAP_ACTIVE;
836 if (req->Attributes & WIN_DATA_WIDTH_16)
837 win->flags |= MAP_16BIT;
838 if (req->Attributes & WIN_USE_WAIT)
839 win->flags |= MAP_USE_WAIT;
841 if (s->ops->set_mem_map(s, win) != 0) {
842 dev_dbg(&s->dev, "failed to set memory mapping\n");
845 s->state |= SOCKET_WIN_REQ(w);
847 /* Return window handle */
848 if (s->features & SS_CAP_STATIC_MAP)
849 req->Base = win->static_start;
851 req->Base = win->res->start;
856 } /* pcmcia_request_window */
857 EXPORT_SYMBOL(pcmcia_request_window);
859 void pcmcia_disable_device(struct pcmcia_device *p_dev)
861 pcmcia_release_configuration(p_dev);
862 pcmcia_release_io(p_dev, &p_dev->io);
863 pcmcia_release_irq(p_dev, &p_dev->irq);
865 pcmcia_release_window(p_dev, p_dev->win);
867 EXPORT_SYMBOL(pcmcia_disable_device);
870 struct pcmcia_cfg_mem {
871 struct pcmcia_device *p_dev;
873 int (*conf_check) (struct pcmcia_device *p_dev,
874 cistpl_cftable_entry_t *cfg,
875 cistpl_cftable_entry_t *dflt,
879 cistpl_cftable_entry_t dflt;
883 * pcmcia_do_loop_config() - internal helper for pcmcia_loop_config()
885 * pcmcia_do_loop_config() is the internal callback for the call from
886 * pcmcia_loop_config() to pccard_loop_tuple(). Data is transferred
887 * by a struct pcmcia_cfg_mem.
889 static int pcmcia_do_loop_config(tuple_t *tuple, cisparse_t *parse, void *priv)
891 cistpl_cftable_entry_t *cfg = &parse->cftable_entry;
892 struct pcmcia_cfg_mem *cfg_mem = priv;
895 cfg_mem->p_dev->conf.ConfigIndex = cfg->index;
896 if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
897 cfg_mem->dflt = *cfg;
899 return cfg_mem->conf_check(cfg_mem->p_dev, cfg, &cfg_mem->dflt,
900 cfg_mem->p_dev->socket->socket.Vcc,
905 * pcmcia_loop_config() - loop over configuration options
906 * @p_dev: the struct pcmcia_device which we need to loop for.
907 * @conf_check: function to call for each configuration option.
908 * It gets passed the struct pcmcia_device, the CIS data
909 * describing the configuration option, and private data
910 * being passed to pcmcia_loop_config()
911 * @priv_data: private data to be passed to the conf_check function.
913 * pcmcia_loop_config() loops over all configuration options, and calls
914 * the driver-specific conf_check() for each one, checking whether
915 * it is a valid one. Returns 0 on success or errorcode otherwise.
917 int pcmcia_loop_config(struct pcmcia_device *p_dev,
918 int (*conf_check) (struct pcmcia_device *p_dev,
919 cistpl_cftable_entry_t *cfg,
920 cistpl_cftable_entry_t *dflt,
925 struct pcmcia_cfg_mem *cfg_mem;
928 cfg_mem = kzalloc(sizeof(struct pcmcia_cfg_mem), GFP_KERNEL);
932 cfg_mem->p_dev = p_dev;
933 cfg_mem->conf_check = conf_check;
934 cfg_mem->priv_data = priv_data;
936 ret = pccard_loop_tuple(p_dev->socket, p_dev->func,
937 CISTPL_CFTABLE_ENTRY, &cfg_mem->parse,
938 cfg_mem, pcmcia_do_loop_config);
943 EXPORT_SYMBOL(pcmcia_loop_config);
946 struct pcmcia_loop_mem {
947 struct pcmcia_device *p_dev;
949 int (*loop_tuple) (struct pcmcia_device *p_dev,
955 * pcmcia_do_loop_tuple() - internal helper for pcmcia_loop_config()
957 * pcmcia_do_loop_tuple() is the internal callback for the call from
958 * pcmcia_loop_tuple() to pccard_loop_tuple(). Data is transferred
959 * by a struct pcmcia_cfg_mem.
961 static int pcmcia_do_loop_tuple(tuple_t *tuple, cisparse_t *parse, void *priv)
963 struct pcmcia_loop_mem *loop = priv;
965 return loop->loop_tuple(loop->p_dev, tuple, loop->priv_data);
969 * pcmcia_loop_tuple() - loop over tuples in the CIS
970 * @p_dev: the struct pcmcia_device which we need to loop for.
971 * @code: which CIS code shall we look for?
972 * @priv_data: private data to be passed to the loop_tuple function.
973 * @loop_tuple: function to call for each CIS entry of type @function. IT
974 * gets passed the raw tuple and @priv_data.
976 * pcmcia_loop_tuple() loops over all CIS entries of type @function, and
977 * calls the @loop_tuple function for each entry. If the call to @loop_tuple
978 * returns 0, the loop exits. Returns 0 on success or errorcode otherwise.
980 int pcmcia_loop_tuple(struct pcmcia_device *p_dev, cisdata_t code,
981 int (*loop_tuple) (struct pcmcia_device *p_dev,
986 struct pcmcia_loop_mem loop = {
988 .loop_tuple = loop_tuple,
989 .priv_data = priv_data};
991 return pccard_loop_tuple(p_dev->socket, p_dev->func, code, NULL,
992 &loop, pcmcia_do_loop_tuple);
994 EXPORT_SYMBOL(pcmcia_loop_tuple);
997 struct pcmcia_loop_get {
1003 * pcmcia_do_get_tuple() - internal helper for pcmcia_get_tuple()
1005 * pcmcia_do_get_tuple() is the internal callback for the call from
1006 * pcmcia_get_tuple() to pcmcia_loop_tuple(). As we're only interested in
1007 * the first tuple, return 0 unconditionally. Create a memory buffer large
1008 * enough to hold the content of the tuple, and fill it with the tuple data.
1009 * The caller is responsible to free the buffer.
1011 static int pcmcia_do_get_tuple(struct pcmcia_device *p_dev, tuple_t *tuple,
1014 struct pcmcia_loop_get *get = priv;
1016 *get->buf = kzalloc(tuple->TupleDataLen, GFP_KERNEL);
1018 get->len = tuple->TupleDataLen;
1019 memcpy(*get->buf, tuple->TupleData, tuple->TupleDataLen);
1021 dev_dbg(&p_dev->dev, "do_get_tuple: out of memory\n");
1026 * pcmcia_get_tuple() - get first tuple from CIS
1027 * @p_dev: the struct pcmcia_device which we need to loop for.
1028 * @code: which CIS code shall we look for?
1029 * @buf: pointer to store the buffer to.
1031 * pcmcia_get_tuple() gets the content of the first CIS entry of type @code.
1032 * It returns the buffer length (or zero). The caller is responsible to free
1033 * the buffer passed in @buf.
1035 size_t pcmcia_get_tuple(struct pcmcia_device *p_dev, cisdata_t code,
1036 unsigned char **buf)
1038 struct pcmcia_loop_get get = {
1044 pcmcia_loop_tuple(p_dev, code, pcmcia_do_get_tuple, &get);
1048 EXPORT_SYMBOL(pcmcia_get_tuple);
1052 * pcmcia_do_get_mac() - internal helper for pcmcia_get_mac_from_cis()
1054 * pcmcia_do_get_mac() is the internal callback for the call from
1055 * pcmcia_get_mac_from_cis() to pcmcia_loop_tuple(). We check whether the
1056 * tuple contains a proper LAN_NODE_ID of length 6, and copy the data
1057 * to struct net_device->dev_addr[i].
1059 static int pcmcia_do_get_mac(struct pcmcia_device *p_dev, tuple_t *tuple,
1062 struct net_device *dev = priv;
1065 if (tuple->TupleData[0] != CISTPL_FUNCE_LAN_NODE_ID)
1067 if (tuple->TupleDataLen < ETH_ALEN + 2) {
1068 dev_warn(&p_dev->dev, "Invalid CIS tuple length for "
1073 if (tuple->TupleData[1] != ETH_ALEN) {
1074 dev_warn(&p_dev->dev, "Invalid header for LAN_NODE_ID\n");
1077 for (i = 0; i < 6; i++)
1078 dev->dev_addr[i] = tuple->TupleData[i+2];
1083 * pcmcia_get_mac_from_cis() - read out MAC address from CISTPL_FUNCE
1084 * @p_dev: the struct pcmcia_device for which we want the address.
1085 * @dev: a properly prepared struct net_device to store the info to.
1087 * pcmcia_get_mac_from_cis() reads out the hardware MAC address from
1088 * CISTPL_FUNCE and stores it into struct net_device *dev->dev_addr which
1089 * must be set up properly by the driver (see examples!).
1091 int pcmcia_get_mac_from_cis(struct pcmcia_device *p_dev, struct net_device *dev)
1093 return pcmcia_loop_tuple(p_dev, CISTPL_FUNCE, pcmcia_do_get_mac, dev);
1095 EXPORT_SYMBOL(pcmcia_get_mac_from_cis);