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>
28 #include <pcmcia/cs_types.h>
29 #include <pcmcia/ss.h>
30 #include <pcmcia/cs.h>
31 #include <pcmcia/cistpl.h>
32 #include <pcmcia/cisreg.h>
33 #include <pcmcia/ds.h>
35 #include "cs_internal.h"
38 /* Access speed for IO windows */
40 module_param(io_speed, int, 0444);
43 static int pcmcia_adjust_io_region(struct resource *res, unsigned long start,
44 unsigned long end, struct pcmcia_socket *s)
46 if (s->resource_ops->adjust_io_region)
47 return s->resource_ops->adjust_io_region(res, start, end, s);
51 static struct resource *pcmcia_find_io_region(unsigned long base, int num,
53 struct pcmcia_socket *s)
55 if (s->resource_ops->find_io)
56 return s->resource_ops->find_io(base, num, align, s);
60 int pcmcia_validate_mem(struct pcmcia_socket *s)
62 if (s->resource_ops->validate_mem)
63 return s->resource_ops->validate_mem(s);
64 /* if there is no callback, we can assume that everything is OK */
68 struct resource *pcmcia_find_mem_region(u_long base, u_long num, u_long align,
69 int low, struct pcmcia_socket *s)
71 if (s->resource_ops->find_mem)
72 return s->resource_ops->find_mem(base, num, align, low, s);
79 * Special stuff for managing IO windows, because they are scarce
82 static int alloc_io_space(struct pcmcia_socket *s, u_int attr,
83 unsigned int *base, unsigned int num, u_int lines)
86 unsigned int try, align;
88 align = (*base) ? (lines ? 1<<lines : 0) : 1;
89 if (align && (align < num)) {
91 dev_dbg(&s->dev, "odd IO request: num %#x align %#x\n",
95 while (align && (align < num))
98 if (*base & ~(align-1)) {
99 dev_dbg(&s->dev, "odd IO request: base %#x align %#x\n",
103 if ((s->features & SS_CAP_STATIC_MAP) && s->io_offset) {
104 *base = s->io_offset | (*base & 0x0fff);
107 /* Check for an already-allocated window that must conflict with
108 * what was asked for. It is a hack because it does not catch all
109 * potential conflicts, just the most obvious ones.
111 for (i = 0; i < MAX_IO_WIN; i++)
112 if ((s->io[i].res) && *base &&
113 ((s->io[i].res->start & (align-1)) == *base))
115 for (i = 0; i < MAX_IO_WIN; i++) {
117 s->io[i].res = pcmcia_find_io_region(*base, num, align, s);
119 *base = s->io[i].res->start;
120 s->io[i].res->flags = (s->io[i].res->flags & ~IORESOURCE_BITS) | (attr & IORESOURCE_BITS);
121 s->io[i].InUse = num;
125 } else if ((s->io[i].res->flags & IORESOURCE_BITS) != (attr & IORESOURCE_BITS))
127 /* Try to extend top of window */
128 try = s->io[i].res->end + 1;
129 if ((*base == 0) || (*base == try))
130 if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start,
131 s->io[i].res->end + num, s) == 0) {
133 s->io[i].InUse += num;
136 /* Try to extend bottom of window */
137 try = s->io[i].res->start - num;
138 if ((*base == 0) || (*base == try))
139 if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start - num,
140 s->io[i].res->end, s) == 0) {
142 s->io[i].InUse += num;
146 return (i == MAX_IO_WIN);
147 } /* alloc_io_space */
150 static void release_io_space(struct pcmcia_socket *s, unsigned int base,
155 for (i = 0; i < MAX_IO_WIN; i++) {
158 if ((s->io[i].res->start <= base) &&
159 (s->io[i].res->end >= base+num-1)) {
160 s->io[i].InUse -= num;
161 /* Free the window if no one else is using it */
162 if (s->io[i].InUse == 0) {
163 release_resource(s->io[i].res);
169 } /* release_io_space */
172 /** pccard_access_configuration_register
174 * Access_configuration_register() reads and writes configuration
175 * registers in attribute memory. Memory window 0 is reserved for
176 * this and the tuple reading services.
179 int pcmcia_access_configuration_register(struct pcmcia_device *p_dev,
182 struct pcmcia_socket *s;
187 if (!p_dev || !p_dev->function_config)
192 mutex_lock(&s->ops_mutex);
193 c = p_dev->function_config;
195 if (!(c->state & CONFIG_LOCKED)) {
196 dev_dbg(&s->dev, "Configuration isnt't locked\n");
197 mutex_unlock(&s->ops_mutex);
201 addr = (c->ConfigBase + reg->Offset) >> 1;
202 mutex_unlock(&s->ops_mutex);
204 switch (reg->Action) {
206 pcmcia_read_cis_mem(s, 1, addr, 1, &val);
211 pcmcia_write_cis_mem(s, 1, addr, 1, &val);
214 dev_dbg(&s->dev, "Invalid conf register request\n");
219 } /* pcmcia_access_configuration_register */
220 EXPORT_SYMBOL(pcmcia_access_configuration_register);
223 int pcmcia_map_mem_page(struct pcmcia_device *p_dev, window_handle_t wh,
226 struct pcmcia_socket *s = p_dev->socket;
232 if (req->Page != 0) {
233 dev_dbg(&s->dev, "failure: requested page is zero\n");
236 mutex_lock(&s->ops_mutex);
237 s->win[wh].card_start = req->CardOffset;
238 ret = s->ops->set_mem_map(s, &s->win[wh]);
240 dev_warn(&s->dev, "failed to set_mem_map\n");
241 mutex_unlock(&s->ops_mutex);
243 } /* pcmcia_map_mem_page */
244 EXPORT_SYMBOL(pcmcia_map_mem_page);
247 /** pcmcia_modify_configuration
249 * Modify a locked socket configuration
251 int pcmcia_modify_configuration(struct pcmcia_device *p_dev,
254 struct pcmcia_socket *s;
260 mutex_lock(&s->ops_mutex);
261 c = p_dev->function_config;
263 if (!(s->state & SOCKET_PRESENT)) {
264 dev_dbg(&s->dev, "No card present\n");
268 if (!(c->state & CONFIG_LOCKED)) {
269 dev_dbg(&s->dev, "Configuration isnt't locked\n");
274 if (mod->Attributes & (CONF_IRQ_CHANGE_VALID | CONF_VCC_CHANGE_VALID)) {
276 "changing Vcc or IRQ is not allowed at this time\n");
281 /* We only allow changing Vpp1 and Vpp2 to the same value */
282 if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) &&
283 (mod->Attributes & CONF_VPP2_CHANGE_VALID)) {
284 if (mod->Vpp1 != mod->Vpp2) {
285 dev_dbg(&s->dev, "Vpp1 and Vpp2 must be the same\n");
289 s->socket.Vpp = mod->Vpp1;
290 if (s->ops->set_socket(s, &s->socket)) {
291 dev_printk(KERN_WARNING, &s->dev,
292 "Unable to set VPP\n");
296 } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) ||
297 (mod->Attributes & CONF_VPP2_CHANGE_VALID)) {
298 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 mutex_unlock(&s->ops_mutex);
329 } /* modify_configuration */
330 EXPORT_SYMBOL(pcmcia_modify_configuration);
333 int pcmcia_release_configuration(struct pcmcia_device *p_dev)
335 pccard_io_map io = { 0, 0, 0, 0, 1 };
336 struct pcmcia_socket *s = p_dev->socket;
340 mutex_lock(&s->ops_mutex);
341 c = p_dev->function_config;
342 if (p_dev->_locked) {
344 if (--(s->lock_count) == 0) {
345 s->socket.flags = SS_OUTPUT_ENA; /* Is this correct? */
347 s->socket.io_irq = 0;
348 s->ops->set_socket(s, &s->socket);
351 if (c->state & CONFIG_LOCKED) {
352 c->state &= ~CONFIG_LOCKED;
353 if (c->state & CONFIG_IO_REQ)
354 for (i = 0; i < MAX_IO_WIN; i++) {
358 if (s->io[i].Config != 0)
361 s->ops->set_io_map(s, &io);
364 mutex_unlock(&s->ops_mutex);
367 } /* pcmcia_release_configuration */
370 /** pcmcia_release_io
372 * Release_io() releases the I/O ranges allocated by a client. This
373 * may be invoked some time after a card ejection has already dumped
374 * the actual socket configuration, so if the client is "stale", we
375 * don't bother checking the port ranges against the current socket
378 static int pcmcia_release_io(struct pcmcia_device *p_dev, io_req_t *req)
380 struct pcmcia_socket *s = p_dev->socket;
384 mutex_lock(&s->ops_mutex);
385 c = p_dev->function_config;
392 if ((c->io.BasePort1 != req->BasePort1) ||
393 (c->io.NumPorts1 != req->NumPorts1) ||
394 (c->io.BasePort2 != req->BasePort2) ||
395 (c->io.NumPorts2 != req->NumPorts2))
398 c->state &= ~CONFIG_IO_REQ;
400 release_io_space(s, req->BasePort1, req->NumPorts1);
402 release_io_space(s, req->BasePort2, req->NumPorts2);
405 mutex_unlock(&s->ops_mutex);
408 } /* pcmcia_release_io */
411 static int pcmcia_release_irq(struct pcmcia_device *p_dev, irq_req_t *req)
413 struct pcmcia_socket *s = p_dev->socket;
417 mutex_lock(&s->ops_mutex);
419 c = p_dev->function_config;
426 if (c->state & CONFIG_LOCKED)
429 if (s->pcmcia_irq != req->AssignedIRQ) {
430 dev_dbg(&s->dev, "IRQ must match assigned one\n");
435 free_irq(req->AssignedIRQ, p_dev->priv);
440 mutex_unlock(&s->ops_mutex);
443 } /* pcmcia_release_irq */
446 int pcmcia_release_window(struct pcmcia_device *p_dev, window_handle_t wh)
448 struct pcmcia_socket *s = p_dev->socket;
455 mutex_lock(&s->ops_mutex);
458 if (!(p_dev->_win & CLIENT_WIN_REQ(wh))) {
459 dev_dbg(&s->dev, "not releasing unknown window\n");
460 mutex_unlock(&s->ops_mutex);
464 /* Shut down memory window */
465 win->flags &= ~MAP_ACTIVE;
466 s->ops->set_mem_map(s, win);
467 s->state &= ~SOCKET_WIN_REQ(wh);
469 /* Release system memory */
471 release_resource(win->res);
475 p_dev->_win &= ~CLIENT_WIN_REQ(wh);
476 mutex_unlock(&s->ops_mutex);
479 } /* pcmcia_release_window */
480 EXPORT_SYMBOL(pcmcia_release_window);
483 int pcmcia_request_configuration(struct pcmcia_device *p_dev,
488 struct pcmcia_socket *s = p_dev->socket;
492 if (!(s->state & SOCKET_PRESENT))
495 if (req->IntType & INT_CARDBUS) {
496 dev_dbg(&s->dev, "IntType may not be INT_CARDBUS\n");
500 mutex_lock(&s->ops_mutex);
501 c = p_dev->function_config;
502 if (c->state & CONFIG_LOCKED) {
503 mutex_unlock(&s->ops_mutex);
504 dev_dbg(&s->dev, "Configuration is locked\n");
508 /* Do power control. We don't allow changes in Vcc. */
509 s->socket.Vpp = req->Vpp;
510 if (s->ops->set_socket(s, &s->socket)) {
511 mutex_unlock(&s->ops_mutex);
512 dev_printk(KERN_WARNING, &s->dev,
513 "Unable to set socket state\n");
517 /* Pick memory or I/O card, DMA mode, interrupt */
518 c->IntType = req->IntType;
519 c->Attributes = req->Attributes;
520 if (req->IntType & INT_MEMORY_AND_IO)
521 s->socket.flags |= SS_IOCARD;
522 if (req->IntType & INT_ZOOMED_VIDEO)
523 s->socket.flags |= SS_ZVCARD | SS_IOCARD;
524 if (req->Attributes & CONF_ENABLE_DMA)
525 s->socket.flags |= SS_DMA_MODE;
526 if (req->Attributes & CONF_ENABLE_SPKR)
527 s->socket.flags |= SS_SPKR_ENA;
528 if (req->Attributes & CONF_ENABLE_IRQ)
529 s->socket.io_irq = s->pcmcia_irq;
531 s->socket.io_irq = 0;
532 s->ops->set_socket(s, &s->socket);
534 mutex_unlock(&s->ops_mutex);
536 /* Set up CIS configuration registers */
537 base = c->ConfigBase = req->ConfigBase;
538 c->CardValues = req->Present;
539 if (req->Present & PRESENT_COPY) {
541 pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy);
543 if (req->Present & PRESENT_OPTION) {
544 if (s->functions == 1) {
545 c->Option = req->ConfigIndex & COR_CONFIG_MASK;
547 c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK;
548 c->Option |= COR_FUNC_ENA|COR_IREQ_ENA;
549 if (req->Present & PRESENT_IOBASE_0)
550 c->Option |= COR_ADDR_DECODE;
552 if ((req->Attributes & CONF_ENABLE_IRQ) &&
553 !(req->Attributes & CONF_ENABLE_PULSE_IRQ))
554 c->Option |= COR_LEVEL_REQ;
555 pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option);
558 if (req->Present & PRESENT_STATUS) {
559 c->Status = req->Status;
560 pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status);
562 if (req->Present & PRESENT_PIN_REPLACE) {
564 pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin);
566 if (req->Present & PRESENT_EXT_STATUS) {
567 c->ExtStatus = req->ExtStatus;
568 pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus);
570 if (req->Present & PRESENT_IOBASE_0) {
571 u_char b = c->io.BasePort1 & 0xff;
572 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b);
573 b = (c->io.BasePort1 >> 8) & 0xff;
574 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b);
576 if (req->Present & PRESENT_IOSIZE) {
577 u_char b = c->io.NumPorts1 + c->io.NumPorts2 - 1;
578 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b);
581 /* Configure I/O windows */
582 if (c->state & CONFIG_IO_REQ) {
583 mutex_lock(&s->ops_mutex);
584 iomap.speed = io_speed;
585 for (i = 0; i < MAX_IO_WIN; i++)
588 iomap.flags = MAP_ACTIVE;
589 switch (s->io[i].res->flags & IO_DATA_PATH_WIDTH) {
590 case IO_DATA_PATH_WIDTH_16:
591 iomap.flags |= MAP_16BIT; break;
592 case IO_DATA_PATH_WIDTH_AUTO:
593 iomap.flags |= MAP_AUTOSZ; break;
597 iomap.start = s->io[i].res->start;
598 iomap.stop = s->io[i].res->end;
599 s->ops->set_io_map(s, &iomap);
602 mutex_unlock(&s->ops_mutex);
605 c->state |= CONFIG_LOCKED;
608 } /* pcmcia_request_configuration */
609 EXPORT_SYMBOL(pcmcia_request_configuration);
612 /** pcmcia_request_io
614 * Request_io() reserves ranges of port addresses for a socket.
615 * I have not implemented range sharing or alias addressing.
617 int pcmcia_request_io(struct pcmcia_device *p_dev, io_req_t *req)
619 struct pcmcia_socket *s = p_dev->socket;
623 mutex_lock(&s->ops_mutex);
625 if (!(s->state & SOCKET_PRESENT)) {
626 dev_dbg(&s->dev, "No card present\n");
633 c = p_dev->function_config;
634 if (c->state & CONFIG_LOCKED) {
635 dev_dbg(&s->dev, "Configuration is locked\n");
638 if (c->state & CONFIG_IO_REQ) {
639 dev_dbg(&s->dev, "IO already configured\n");
642 if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)) {
643 dev_dbg(&s->dev, "bad attribute setting for IO region 1\n");
646 if ((req->NumPorts2 > 0) &&
647 (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))) {
648 dev_dbg(&s->dev, "bad attribute setting for IO region 2\n");
652 dev_dbg(&s->dev, "trying to allocate resource 1\n");
653 ret = alloc_io_space(s, req->Attributes1, &req->BasePort1,
654 req->NumPorts1, req->IOAddrLines);
656 dev_dbg(&s->dev, "allocation of resource 1 failed\n");
660 if (req->NumPorts2) {
661 dev_dbg(&s->dev, "trying to allocate resource 2\n");
662 ret = alloc_io_space(s, req->Attributes2, &req->BasePort2,
663 req->NumPorts2, req->IOAddrLines);
665 dev_dbg(&s->dev, "allocation of resource 2 failed\n");
666 release_io_space(s, req->BasePort1, req->NumPorts1);
672 c->state |= CONFIG_IO_REQ;
674 dev_dbg(&s->dev, "allocating resources succeeded: %d\n", ret);
677 mutex_unlock(&s->ops_mutex);
680 } /* pcmcia_request_io */
681 EXPORT_SYMBOL(pcmcia_request_io);
684 /** pcmcia_request_irq
686 * Request_irq() reserves an irq for this client.
689 int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req)
691 struct pcmcia_socket *s = p_dev->socket;
693 int ret = -EINVAL, irq = p_dev->irq_v;
694 int type = IRQF_SHARED;
696 mutex_lock(&s->ops_mutex);
698 if (!(s->state & SOCKET_PRESENT)) {
699 dev_dbg(&s->dev, "No card present\n");
702 c = p_dev->function_config;
703 if (c->state & CONFIG_LOCKED) {
704 dev_dbg(&s->dev, "Configuration is locked\n");
709 dev_dbg(&s->dev, "no IRQ available\n");
713 if (!(req->Attributes & IRQ_TYPE_DYNAMIC_SHARING)) {
714 req->Attributes |= IRQ_TYPE_DYNAMIC_SHARING;
715 dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: the driver "
716 "needs updating to supported shared IRQ lines.\n");
720 ret = request_irq(irq, req->Handler, type,
721 p_dev->devname, p_dev->priv);
723 dev_printk(KERN_INFO, &s->dev,
724 "request_irq() failed\n");
729 req->AssignedIRQ = irq;
735 mutex_unlock(&s->ops_mutex);
737 } /* pcmcia_request_irq */
738 EXPORT_SYMBOL(pcmcia_request_irq);
741 #ifdef CONFIG_PCMCIA_PROBE
743 /* mask of IRQs already reserved by other cards, we should avoid using them */
744 static u8 pcmcia_used_irq[NR_IRQS];
746 static irqreturn_t test_action(int cpl, void *dev_id)
752 * pcmcia_setup_isa_irq() - determine whether an ISA IRQ can be used
753 * @p_dev - the associated PCMCIA device
755 * locking note: must be called with ops_mutex locked.
757 static int pcmcia_setup_isa_irq(struct pcmcia_device *p_dev, int type)
759 struct pcmcia_socket *s = p_dev->socket;
760 unsigned int try, irq;
761 u32 mask = s->irq_mask;
764 for (try = 0; try < 64; try++) {
767 /* marked as available by driver, not blocked by userspace? */
768 if (!((mask >> irq) & 1))
771 /* avoid an IRQ which is already used by another PCMCIA card */
772 if ((try < 32) && pcmcia_used_irq[irq])
775 /* register the correct driver, if possible, to check whether
776 * registering a dummy handle works, i.e. if the IRQ isn't
777 * marked as used by the kernel resource management core */
778 ret = request_irq(irq, test_action, type, p_dev->devname,
781 free_irq(irq, p_dev);
782 p_dev->irq_v = s->pcmcia_irq = irq;
783 pcmcia_used_irq[irq]++;
791 void pcmcia_cleanup_irq(struct pcmcia_socket *s)
793 pcmcia_used_irq[s->pcmcia_irq]--;
797 #else /* CONFIG_PCMCIA_PROBE */
799 static int pcmcia_setup_isa_irq(struct pcmcia_device *p_dev, int type)
804 void pcmcia_cleanup_irq(struct pcmcia_socket *s)
810 #endif /* CONFIG_PCMCIA_PROBE */
814 * pcmcia_setup_irq() - determine IRQ to be used for device
815 * @p_dev - the associated PCMCIA device
817 * locking note: must be called with ops_mutex locked.
819 int pcmcia_setup_irq(struct pcmcia_device *p_dev)
821 struct pcmcia_socket *s = p_dev->socket;
826 /* already assigned? */
828 p_dev->irq_v = s->pcmcia_irq;
832 /* prefer an exclusive ISA irq */
833 if (!pcmcia_setup_isa_irq(p_dev, 0))
836 /* but accept a shared ISA irq */
837 if (!pcmcia_setup_isa_irq(p_dev, IRQF_SHARED))
840 /* but use the PCI irq otherwise */
842 p_dev->irq_v = s->pcmcia_irq = s->pci_irq;
850 /** pcmcia_request_window
852 * Request_window() establishes a mapping between card memory space
853 * and system memory space.
855 int pcmcia_request_window(struct pcmcia_device *p_dev, win_req_t *req, window_handle_t *wh)
857 struct pcmcia_socket *s = p_dev->socket;
862 if (!(s->state & SOCKET_PRESENT)) {
863 dev_dbg(&s->dev, "No card present\n");
866 if (req->Attributes & (WIN_PAGED | WIN_SHARED)) {
867 dev_dbg(&s->dev, "bad attribute setting for iomem region\n");
871 /* Window size defaults to smallest available */
873 req->Size = s->map_size;
874 align = (((s->features & SS_CAP_MEM_ALIGN) ||
875 (req->Attributes & WIN_STRICT_ALIGN)) ?
876 req->Size : s->map_size);
877 if (req->Size & (s->map_size-1)) {
878 dev_dbg(&s->dev, "invalid map size\n");
881 if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) ||
882 (req->Base & (align-1))) {
883 dev_dbg(&s->dev, "invalid base address\n");
889 /* Allocate system memory window */
890 for (w = 0; w < MAX_WIN; w++)
891 if (!(s->state & SOCKET_WIN_REQ(w)))
894 dev_dbg(&s->dev, "all windows are used already\n");
898 mutex_lock(&s->ops_mutex);
901 if (!(s->features & SS_CAP_STATIC_MAP)) {
902 win->res = pcmcia_find_mem_region(req->Base, req->Size, align,
903 (req->Attributes & WIN_MAP_BELOW_1MB), s);
905 dev_dbg(&s->dev, "allocating mem region failed\n");
906 mutex_unlock(&s->ops_mutex);
910 p_dev->_win |= CLIENT_WIN_REQ(w);
912 /* Configure the socket controller */
915 win->speed = req->AccessSpeed;
916 if (req->Attributes & WIN_MEMORY_TYPE)
917 win->flags |= MAP_ATTRIB;
918 if (req->Attributes & WIN_ENABLE)
919 win->flags |= MAP_ACTIVE;
920 if (req->Attributes & WIN_DATA_WIDTH_16)
921 win->flags |= MAP_16BIT;
922 if (req->Attributes & WIN_USE_WAIT)
923 win->flags |= MAP_USE_WAIT;
926 if (s->ops->set_mem_map(s, win) != 0) {
927 dev_dbg(&s->dev, "failed to set memory mapping\n");
928 mutex_unlock(&s->ops_mutex);
931 s->state |= SOCKET_WIN_REQ(w);
933 /* Return window handle */
934 if (s->features & SS_CAP_STATIC_MAP)
935 req->Base = win->static_start;
937 req->Base = win->res->start;
939 mutex_unlock(&s->ops_mutex);
943 } /* pcmcia_request_window */
944 EXPORT_SYMBOL(pcmcia_request_window);
946 void pcmcia_disable_device(struct pcmcia_device *p_dev)
948 pcmcia_release_configuration(p_dev);
949 pcmcia_release_io(p_dev, &p_dev->io);
950 pcmcia_release_irq(p_dev, &p_dev->irq);
952 pcmcia_release_window(p_dev, p_dev->win);
954 EXPORT_SYMBOL(pcmcia_disable_device);
957 struct pcmcia_cfg_mem {
958 struct pcmcia_device *p_dev;
960 int (*conf_check) (struct pcmcia_device *p_dev,
961 cistpl_cftable_entry_t *cfg,
962 cistpl_cftable_entry_t *dflt,
966 cistpl_cftable_entry_t dflt;
970 * pcmcia_do_loop_config() - internal helper for pcmcia_loop_config()
972 * pcmcia_do_loop_config() is the internal callback for the call from
973 * pcmcia_loop_config() to pccard_loop_tuple(). Data is transferred
974 * by a struct pcmcia_cfg_mem.
976 static int pcmcia_do_loop_config(tuple_t *tuple, cisparse_t *parse, void *priv)
978 cistpl_cftable_entry_t *cfg = &parse->cftable_entry;
979 struct pcmcia_cfg_mem *cfg_mem = priv;
982 cfg_mem->p_dev->conf.ConfigIndex = cfg->index;
983 if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
984 cfg_mem->dflt = *cfg;
986 return cfg_mem->conf_check(cfg_mem->p_dev, cfg, &cfg_mem->dflt,
987 cfg_mem->p_dev->socket->socket.Vcc,
992 * pcmcia_loop_config() - loop over configuration options
993 * @p_dev: the struct pcmcia_device which we need to loop for.
994 * @conf_check: function to call for each configuration option.
995 * It gets passed the struct pcmcia_device, the CIS data
996 * describing the configuration option, and private data
997 * being passed to pcmcia_loop_config()
998 * @priv_data: private data to be passed to the conf_check function.
1000 * pcmcia_loop_config() loops over all configuration options, and calls
1001 * the driver-specific conf_check() for each one, checking whether
1002 * it is a valid one. Returns 0 on success or errorcode otherwise.
1004 int pcmcia_loop_config(struct pcmcia_device *p_dev,
1005 int (*conf_check) (struct pcmcia_device *p_dev,
1006 cistpl_cftable_entry_t *cfg,
1007 cistpl_cftable_entry_t *dflt,
1012 struct pcmcia_cfg_mem *cfg_mem;
1015 cfg_mem = kzalloc(sizeof(struct pcmcia_cfg_mem), GFP_KERNEL);
1016 if (cfg_mem == NULL)
1019 cfg_mem->p_dev = p_dev;
1020 cfg_mem->conf_check = conf_check;
1021 cfg_mem->priv_data = priv_data;
1023 ret = pccard_loop_tuple(p_dev->socket, p_dev->func,
1024 CISTPL_CFTABLE_ENTRY, &cfg_mem->parse,
1025 cfg_mem, pcmcia_do_loop_config);
1030 EXPORT_SYMBOL(pcmcia_loop_config);
1033 struct pcmcia_loop_mem {
1034 struct pcmcia_device *p_dev;
1036 int (*loop_tuple) (struct pcmcia_device *p_dev,
1042 * pcmcia_do_loop_tuple() - internal helper for pcmcia_loop_config()
1044 * pcmcia_do_loop_tuple() is the internal callback for the call from
1045 * pcmcia_loop_tuple() to pccard_loop_tuple(). Data is transferred
1046 * by a struct pcmcia_cfg_mem.
1048 static int pcmcia_do_loop_tuple(tuple_t *tuple, cisparse_t *parse, void *priv)
1050 struct pcmcia_loop_mem *loop = priv;
1052 return loop->loop_tuple(loop->p_dev, tuple, loop->priv_data);
1056 * pcmcia_loop_tuple() - loop over tuples in the CIS
1057 * @p_dev: the struct pcmcia_device which we need to loop for.
1058 * @code: which CIS code shall we look for?
1059 * @priv_data: private data to be passed to the loop_tuple function.
1060 * @loop_tuple: function to call for each CIS entry of type @function. IT
1061 * gets passed the raw tuple and @priv_data.
1063 * pcmcia_loop_tuple() loops over all CIS entries of type @function, and
1064 * calls the @loop_tuple function for each entry. If the call to @loop_tuple
1065 * returns 0, the loop exits. Returns 0 on success or errorcode otherwise.
1067 int pcmcia_loop_tuple(struct pcmcia_device *p_dev, cisdata_t code,
1068 int (*loop_tuple) (struct pcmcia_device *p_dev,
1073 struct pcmcia_loop_mem loop = {
1075 .loop_tuple = loop_tuple,
1076 .priv_data = priv_data};
1078 return pccard_loop_tuple(p_dev->socket, p_dev->func, code, NULL,
1079 &loop, pcmcia_do_loop_tuple);
1081 EXPORT_SYMBOL(pcmcia_loop_tuple);
1084 struct pcmcia_loop_get {
1090 * pcmcia_do_get_tuple() - internal helper for pcmcia_get_tuple()
1092 * pcmcia_do_get_tuple() is the internal callback for the call from
1093 * pcmcia_get_tuple() to pcmcia_loop_tuple(). As we're only interested in
1094 * the first tuple, return 0 unconditionally. Create a memory buffer large
1095 * enough to hold the content of the tuple, and fill it with the tuple data.
1096 * The caller is responsible to free the buffer.
1098 static int pcmcia_do_get_tuple(struct pcmcia_device *p_dev, tuple_t *tuple,
1101 struct pcmcia_loop_get *get = priv;
1103 *get->buf = kzalloc(tuple->TupleDataLen, GFP_KERNEL);
1105 get->len = tuple->TupleDataLen;
1106 memcpy(*get->buf, tuple->TupleData, tuple->TupleDataLen);
1108 dev_dbg(&p_dev->dev, "do_get_tuple: out of memory\n");
1113 * pcmcia_get_tuple() - get first tuple from CIS
1114 * @p_dev: the struct pcmcia_device which we need to loop for.
1115 * @code: which CIS code shall we look for?
1116 * @buf: pointer to store the buffer to.
1118 * pcmcia_get_tuple() gets the content of the first CIS entry of type @code.
1119 * It returns the buffer length (or zero). The caller is responsible to free
1120 * the buffer passed in @buf.
1122 size_t pcmcia_get_tuple(struct pcmcia_device *p_dev, cisdata_t code,
1123 unsigned char **buf)
1125 struct pcmcia_loop_get get = {
1131 pcmcia_loop_tuple(p_dev, code, pcmcia_do_get_tuple, &get);
1135 EXPORT_SYMBOL(pcmcia_get_tuple);
1139 * pcmcia_do_get_mac() - internal helper for pcmcia_get_mac_from_cis()
1141 * pcmcia_do_get_mac() is the internal callback for the call from
1142 * pcmcia_get_mac_from_cis() to pcmcia_loop_tuple(). We check whether the
1143 * tuple contains a proper LAN_NODE_ID of length 6, and copy the data
1144 * to struct net_device->dev_addr[i].
1146 static int pcmcia_do_get_mac(struct pcmcia_device *p_dev, tuple_t *tuple,
1149 struct net_device *dev = priv;
1152 if (tuple->TupleData[0] != CISTPL_FUNCE_LAN_NODE_ID)
1154 if (tuple->TupleDataLen < ETH_ALEN + 2) {
1155 dev_warn(&p_dev->dev, "Invalid CIS tuple length for "
1160 if (tuple->TupleData[1] != ETH_ALEN) {
1161 dev_warn(&p_dev->dev, "Invalid header for LAN_NODE_ID\n");
1164 for (i = 0; i < 6; i++)
1165 dev->dev_addr[i] = tuple->TupleData[i+2];
1170 * pcmcia_get_mac_from_cis() - read out MAC address from CISTPL_FUNCE
1171 * @p_dev: the struct pcmcia_device for which we want the address.
1172 * @dev: a properly prepared struct net_device to store the info to.
1174 * pcmcia_get_mac_from_cis() reads out the hardware MAC address from
1175 * CISTPL_FUNCE and stores it into struct net_device *dev->dev_addr which
1176 * must be set up properly by the driver (see examples!).
1178 int pcmcia_get_mac_from_cis(struct pcmcia_device *p_dev, struct net_device *dev)
1180 return pcmcia_loop_tuple(p_dev, CISTPL_FUNCE, pcmcia_do_get_mac, dev);
1182 EXPORT_SYMBOL(pcmcia_get_mac_from_cis);