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 (c->irq.Attributes != req->Attributes) {
430 dev_dbg(&s->dev, "IRQ attributes must match assigned ones\n");
433 if (s->irq.AssignedIRQ != req->AssignedIRQ) {
434 dev_dbg(&s->dev, "IRQ must match assigned one\n");
437 if (--s->irq.Config == 0) {
438 c->state &= ~CONFIG_IRQ_REQ;
442 free_irq(req->AssignedIRQ, p_dev->priv);
447 mutex_unlock(&s->ops_mutex);
450 } /* pcmcia_release_irq */
453 int pcmcia_release_window(struct pcmcia_device *p_dev, window_handle_t wh)
455 struct pcmcia_socket *s = p_dev->socket;
462 mutex_lock(&s->ops_mutex);
465 if (!(p_dev->_win & CLIENT_WIN_REQ(wh))) {
466 dev_dbg(&s->dev, "not releasing unknown window\n");
467 mutex_unlock(&s->ops_mutex);
471 /* Shut down memory window */
472 win->flags &= ~MAP_ACTIVE;
473 s->ops->set_mem_map(s, win);
474 s->state &= ~SOCKET_WIN_REQ(wh);
476 /* Release system memory */
478 release_resource(win->res);
482 p_dev->_win &= ~CLIENT_WIN_REQ(wh);
483 mutex_unlock(&s->ops_mutex);
486 } /* pcmcia_release_window */
487 EXPORT_SYMBOL(pcmcia_release_window);
490 int pcmcia_request_configuration(struct pcmcia_device *p_dev,
495 struct pcmcia_socket *s = p_dev->socket;
499 if (!(s->state & SOCKET_PRESENT))
502 if (req->IntType & INT_CARDBUS) {
503 dev_dbg(&s->dev, "IntType may not be INT_CARDBUS\n");
507 mutex_lock(&s->ops_mutex);
508 c = p_dev->function_config;
509 if (c->state & CONFIG_LOCKED) {
510 mutex_unlock(&s->ops_mutex);
511 dev_dbg(&s->dev, "Configuration is locked\n");
515 /* Do power control. We don't allow changes in Vcc. */
516 s->socket.Vpp = req->Vpp;
517 if (s->ops->set_socket(s, &s->socket)) {
518 mutex_unlock(&s->ops_mutex);
519 dev_printk(KERN_WARNING, &s->dev,
520 "Unable to set socket state\n");
524 /* Pick memory or I/O card, DMA mode, interrupt */
525 c->IntType = req->IntType;
526 c->Attributes = req->Attributes;
527 if (req->IntType & INT_MEMORY_AND_IO)
528 s->socket.flags |= SS_IOCARD;
529 if (req->IntType & INT_ZOOMED_VIDEO)
530 s->socket.flags |= SS_ZVCARD | SS_IOCARD;
531 if (req->Attributes & CONF_ENABLE_DMA)
532 s->socket.flags |= SS_DMA_MODE;
533 if (req->Attributes & CONF_ENABLE_SPKR)
534 s->socket.flags |= SS_SPKR_ENA;
535 if (req->Attributes & CONF_ENABLE_IRQ)
536 s->socket.io_irq = s->irq.AssignedIRQ;
538 s->socket.io_irq = 0;
539 s->ops->set_socket(s, &s->socket);
541 mutex_unlock(&s->ops_mutex);
543 /* Set up CIS configuration registers */
544 base = c->ConfigBase = req->ConfigBase;
545 c->CardValues = req->Present;
546 if (req->Present & PRESENT_COPY) {
548 pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy);
550 if (req->Present & PRESENT_OPTION) {
551 if (s->functions == 1) {
552 c->Option = req->ConfigIndex & COR_CONFIG_MASK;
554 c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK;
555 c->Option |= COR_FUNC_ENA|COR_IREQ_ENA;
556 if (req->Present & PRESENT_IOBASE_0)
557 c->Option |= COR_ADDR_DECODE;
559 if (c->state & CONFIG_IRQ_REQ)
560 if (!(c->irq.Attributes & IRQ_FORCED_PULSE))
561 c->Option |= COR_LEVEL_REQ;
562 pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option);
565 if (req->Present & PRESENT_STATUS) {
566 c->Status = req->Status;
567 pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status);
569 if (req->Present & PRESENT_PIN_REPLACE) {
571 pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin);
573 if (req->Present & PRESENT_EXT_STATUS) {
574 c->ExtStatus = req->ExtStatus;
575 pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus);
577 if (req->Present & PRESENT_IOBASE_0) {
578 u_char b = c->io.BasePort1 & 0xff;
579 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b);
580 b = (c->io.BasePort1 >> 8) & 0xff;
581 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b);
583 if (req->Present & PRESENT_IOSIZE) {
584 u_char b = c->io.NumPorts1 + c->io.NumPorts2 - 1;
585 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b);
588 /* Configure I/O windows */
589 if (c->state & CONFIG_IO_REQ) {
590 mutex_lock(&s->ops_mutex);
591 iomap.speed = io_speed;
592 for (i = 0; i < MAX_IO_WIN; i++)
595 iomap.flags = MAP_ACTIVE;
596 switch (s->io[i].res->flags & IO_DATA_PATH_WIDTH) {
597 case IO_DATA_PATH_WIDTH_16:
598 iomap.flags |= MAP_16BIT; break;
599 case IO_DATA_PATH_WIDTH_AUTO:
600 iomap.flags |= MAP_AUTOSZ; break;
604 iomap.start = s->io[i].res->start;
605 iomap.stop = s->io[i].res->end;
606 s->ops->set_io_map(s, &iomap);
609 mutex_unlock(&s->ops_mutex);
612 c->state |= CONFIG_LOCKED;
615 } /* pcmcia_request_configuration */
616 EXPORT_SYMBOL(pcmcia_request_configuration);
619 /** pcmcia_request_io
621 * Request_io() reserves ranges of port addresses for a socket.
622 * I have not implemented range sharing or alias addressing.
624 int pcmcia_request_io(struct pcmcia_device *p_dev, io_req_t *req)
626 struct pcmcia_socket *s = p_dev->socket;
630 mutex_lock(&s->ops_mutex);
632 if (!(s->state & SOCKET_PRESENT)) {
633 dev_dbg(&s->dev, "No card present\n");
640 c = p_dev->function_config;
641 if (c->state & CONFIG_LOCKED) {
642 dev_dbg(&s->dev, "Configuration is locked\n");
645 if (c->state & CONFIG_IO_REQ) {
646 dev_dbg(&s->dev, "IO already configured\n");
649 if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)) {
650 dev_dbg(&s->dev, "bad attribute setting for IO region 1\n");
653 if ((req->NumPorts2 > 0) &&
654 (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))) {
655 dev_dbg(&s->dev, "bad attribute setting for IO region 2\n");
659 dev_dbg(&s->dev, "trying to allocate resource 1\n");
660 ret = alloc_io_space(s, req->Attributes1, &req->BasePort1,
661 req->NumPorts1, req->IOAddrLines);
663 dev_dbg(&s->dev, "allocation of resource 1 failed\n");
667 if (req->NumPorts2) {
668 dev_dbg(&s->dev, "trying to allocate resource 2\n");
669 ret = alloc_io_space(s, req->Attributes2, &req->BasePort2,
670 req->NumPorts2, req->IOAddrLines);
672 dev_dbg(&s->dev, "allocation of resource 2 failed\n");
673 release_io_space(s, req->BasePort1, req->NumPorts1);
679 c->state |= CONFIG_IO_REQ;
681 dev_dbg(&s->dev, "allocating resources succeeded: %d\n", ret);
684 mutex_unlock(&s->ops_mutex);
687 } /* pcmcia_request_io */
688 EXPORT_SYMBOL(pcmcia_request_io);
691 /** pcmcia_request_irq
693 * Request_irq() reserves an irq for this client.
696 int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req)
698 struct pcmcia_socket *s = p_dev->socket;
700 int ret = -EINVAL, irq = p_dev->irq_v;
701 int type = IRQF_SHARED;
703 mutex_lock(&s->ops_mutex);
705 if (!(s->state & SOCKET_PRESENT)) {
706 dev_dbg(&s->dev, "No card present\n");
709 c = p_dev->function_config;
710 if (c->state & CONFIG_LOCKED) {
711 dev_dbg(&s->dev, "Configuration is locked\n");
714 if (c->state & CONFIG_IRQ_REQ) {
715 dev_dbg(&s->dev, "IRQ already configured\n");
720 dev_dbg(&s->dev, "no IRQ available\n");
724 if (!(req->Attributes & IRQ_TYPE_DYNAMIC_SHARING)) {
725 req->Attributes |= IRQ_TYPE_DYNAMIC_SHARING;
726 dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: "
727 "request for exclusive IRQ could not be fulfilled.\n");
728 dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: the driver "
729 "needs updating to supported shared IRQ lines.\n");
733 ret = request_irq(irq, req->Handler, type,
734 p_dev->devname, p_dev->priv);
736 dev_printk(KERN_INFO, &s->dev,
737 "request_irq() failed\n");
742 c->irq.Attributes = req->Attributes;
743 req->AssignedIRQ = irq;
746 c->state |= CONFIG_IRQ_REQ;
751 mutex_unlock(&s->ops_mutex);
753 } /* pcmcia_request_irq */
754 EXPORT_SYMBOL(pcmcia_request_irq);
757 #ifdef CONFIG_PCMCIA_PROBE
759 /* mask of IRQs already reserved by other cards, we should avoid using them */
760 static u8 pcmcia_used_irq[NR_IRQS];
762 static irqreturn_t test_action(int cpl, void *dev_id)
768 * pcmcia_setup_isa_irq() - determine whether an ISA IRQ can be used
769 * @p_dev - the associated PCMCIA device
771 * locking note: must be called with ops_mutex locked.
773 static int pcmcia_setup_isa_irq(struct pcmcia_device *p_dev, int type)
775 struct pcmcia_socket *s = p_dev->socket;
776 unsigned int try, irq;
777 u32 mask = s->irq_mask;
780 for (try = 0; try < 64; try++) {
783 /* marked as available by driver, not blocked by userspace? */
784 if (!((mask >> irq) & 1))
787 /* avoid an IRQ which is already used by another PCMCIA card */
788 if ((try < 32) && pcmcia_used_irq[irq])
791 /* register the correct driver, if possible, to check whether
792 * registering a dummy handle works, i.e. if the IRQ isn't
793 * marked as used by the kernel resource management core */
794 ret = request_irq(irq, test_action, type, p_dev->devname,
797 free_irq(irq, p_dev);
798 p_dev->irq_v = s->irq.AssignedIRQ = irq;
799 pcmcia_used_irq[irq]++;
807 void pcmcia_cleanup_irq(struct pcmcia_socket *s)
809 pcmcia_used_irq[s->irq.AssignedIRQ]--;
810 s->irq.AssignedIRQ = 0;
813 #else /* CONFIG_PCMCIA_PROBE */
815 static int pcmcia_setup_isa_irq(struct pcmcia_device *p_dev, int type)
820 void pcmcia_cleanup_irq(struct pcmcia_socket *s)
822 s->irq.AssignedIRQ = 0;
826 #endif /* CONFIG_PCMCIA_PROBE */
830 * pcmcia_setup_irq() - determine IRQ to be used for device
831 * @p_dev - the associated PCMCIA device
833 * locking note: must be called with ops_mutex locked.
835 int pcmcia_setup_irq(struct pcmcia_device *p_dev)
837 struct pcmcia_socket *s = p_dev->socket;
842 /* already assigned? */
843 if (s->irq.AssignedIRQ) {
844 p_dev->irq_v = s->irq.AssignedIRQ;
848 /* prefer an exclusive ISA irq */
849 if (!pcmcia_setup_isa_irq(p_dev, 0))
852 /* but accept a shared ISA irq */
853 if (!pcmcia_setup_isa_irq(p_dev, IRQF_SHARED))
856 /* but use the PCI irq otherwise */
858 p_dev->irq_v = s->irq.AssignedIRQ = s->pci_irq;
866 /** pcmcia_request_window
868 * Request_window() establishes a mapping between card memory space
869 * and system memory space.
871 int pcmcia_request_window(struct pcmcia_device *p_dev, win_req_t *req, window_handle_t *wh)
873 struct pcmcia_socket *s = p_dev->socket;
878 if (!(s->state & SOCKET_PRESENT)) {
879 dev_dbg(&s->dev, "No card present\n");
882 if (req->Attributes & (WIN_PAGED | WIN_SHARED)) {
883 dev_dbg(&s->dev, "bad attribute setting for iomem region\n");
887 /* Window size defaults to smallest available */
889 req->Size = s->map_size;
890 align = (((s->features & SS_CAP_MEM_ALIGN) ||
891 (req->Attributes & WIN_STRICT_ALIGN)) ?
892 req->Size : s->map_size);
893 if (req->Size & (s->map_size-1)) {
894 dev_dbg(&s->dev, "invalid map size\n");
897 if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) ||
898 (req->Base & (align-1))) {
899 dev_dbg(&s->dev, "invalid base address\n");
905 /* Allocate system memory window */
906 for (w = 0; w < MAX_WIN; w++)
907 if (!(s->state & SOCKET_WIN_REQ(w)))
910 dev_dbg(&s->dev, "all windows are used already\n");
914 mutex_lock(&s->ops_mutex);
917 if (!(s->features & SS_CAP_STATIC_MAP)) {
918 win->res = pcmcia_find_mem_region(req->Base, req->Size, align,
919 (req->Attributes & WIN_MAP_BELOW_1MB), s);
921 dev_dbg(&s->dev, "allocating mem region failed\n");
922 mutex_unlock(&s->ops_mutex);
926 p_dev->_win |= CLIENT_WIN_REQ(w);
928 /* Configure the socket controller */
931 win->speed = req->AccessSpeed;
932 if (req->Attributes & WIN_MEMORY_TYPE)
933 win->flags |= MAP_ATTRIB;
934 if (req->Attributes & WIN_ENABLE)
935 win->flags |= MAP_ACTIVE;
936 if (req->Attributes & WIN_DATA_WIDTH_16)
937 win->flags |= MAP_16BIT;
938 if (req->Attributes & WIN_USE_WAIT)
939 win->flags |= MAP_USE_WAIT;
942 if (s->ops->set_mem_map(s, win) != 0) {
943 dev_dbg(&s->dev, "failed to set memory mapping\n");
944 mutex_unlock(&s->ops_mutex);
947 s->state |= SOCKET_WIN_REQ(w);
949 /* Return window handle */
950 if (s->features & SS_CAP_STATIC_MAP)
951 req->Base = win->static_start;
953 req->Base = win->res->start;
955 mutex_unlock(&s->ops_mutex);
959 } /* pcmcia_request_window */
960 EXPORT_SYMBOL(pcmcia_request_window);
962 void pcmcia_disable_device(struct pcmcia_device *p_dev)
964 pcmcia_release_configuration(p_dev);
965 pcmcia_release_io(p_dev, &p_dev->io);
966 pcmcia_release_irq(p_dev, &p_dev->irq);
968 pcmcia_release_window(p_dev, p_dev->win);
970 EXPORT_SYMBOL(pcmcia_disable_device);
973 struct pcmcia_cfg_mem {
974 struct pcmcia_device *p_dev;
976 int (*conf_check) (struct pcmcia_device *p_dev,
977 cistpl_cftable_entry_t *cfg,
978 cistpl_cftable_entry_t *dflt,
982 cistpl_cftable_entry_t dflt;
986 * pcmcia_do_loop_config() - internal helper for pcmcia_loop_config()
988 * pcmcia_do_loop_config() is the internal callback for the call from
989 * pcmcia_loop_config() to pccard_loop_tuple(). Data is transferred
990 * by a struct pcmcia_cfg_mem.
992 static int pcmcia_do_loop_config(tuple_t *tuple, cisparse_t *parse, void *priv)
994 cistpl_cftable_entry_t *cfg = &parse->cftable_entry;
995 struct pcmcia_cfg_mem *cfg_mem = priv;
998 cfg_mem->p_dev->conf.ConfigIndex = cfg->index;
999 if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
1000 cfg_mem->dflt = *cfg;
1002 return cfg_mem->conf_check(cfg_mem->p_dev, cfg, &cfg_mem->dflt,
1003 cfg_mem->p_dev->socket->socket.Vcc,
1004 cfg_mem->priv_data);
1008 * pcmcia_loop_config() - loop over configuration options
1009 * @p_dev: the struct pcmcia_device which we need to loop for.
1010 * @conf_check: function to call for each configuration option.
1011 * It gets passed the struct pcmcia_device, the CIS data
1012 * describing the configuration option, and private data
1013 * being passed to pcmcia_loop_config()
1014 * @priv_data: private data to be passed to the conf_check function.
1016 * pcmcia_loop_config() loops over all configuration options, and calls
1017 * the driver-specific conf_check() for each one, checking whether
1018 * it is a valid one. Returns 0 on success or errorcode otherwise.
1020 int pcmcia_loop_config(struct pcmcia_device *p_dev,
1021 int (*conf_check) (struct pcmcia_device *p_dev,
1022 cistpl_cftable_entry_t *cfg,
1023 cistpl_cftable_entry_t *dflt,
1028 struct pcmcia_cfg_mem *cfg_mem;
1031 cfg_mem = kzalloc(sizeof(struct pcmcia_cfg_mem), GFP_KERNEL);
1032 if (cfg_mem == NULL)
1035 cfg_mem->p_dev = p_dev;
1036 cfg_mem->conf_check = conf_check;
1037 cfg_mem->priv_data = priv_data;
1039 ret = pccard_loop_tuple(p_dev->socket, p_dev->func,
1040 CISTPL_CFTABLE_ENTRY, &cfg_mem->parse,
1041 cfg_mem, pcmcia_do_loop_config);
1046 EXPORT_SYMBOL(pcmcia_loop_config);
1049 struct pcmcia_loop_mem {
1050 struct pcmcia_device *p_dev;
1052 int (*loop_tuple) (struct pcmcia_device *p_dev,
1058 * pcmcia_do_loop_tuple() - internal helper for pcmcia_loop_config()
1060 * pcmcia_do_loop_tuple() is the internal callback for the call from
1061 * pcmcia_loop_tuple() to pccard_loop_tuple(). Data is transferred
1062 * by a struct pcmcia_cfg_mem.
1064 static int pcmcia_do_loop_tuple(tuple_t *tuple, cisparse_t *parse, void *priv)
1066 struct pcmcia_loop_mem *loop = priv;
1068 return loop->loop_tuple(loop->p_dev, tuple, loop->priv_data);
1072 * pcmcia_loop_tuple() - loop over tuples in the CIS
1073 * @p_dev: the struct pcmcia_device which we need to loop for.
1074 * @code: which CIS code shall we look for?
1075 * @priv_data: private data to be passed to the loop_tuple function.
1076 * @loop_tuple: function to call for each CIS entry of type @function. IT
1077 * gets passed the raw tuple and @priv_data.
1079 * pcmcia_loop_tuple() loops over all CIS entries of type @function, and
1080 * calls the @loop_tuple function for each entry. If the call to @loop_tuple
1081 * returns 0, the loop exits. Returns 0 on success or errorcode otherwise.
1083 int pcmcia_loop_tuple(struct pcmcia_device *p_dev, cisdata_t code,
1084 int (*loop_tuple) (struct pcmcia_device *p_dev,
1089 struct pcmcia_loop_mem loop = {
1091 .loop_tuple = loop_tuple,
1092 .priv_data = priv_data};
1094 return pccard_loop_tuple(p_dev->socket, p_dev->func, code, NULL,
1095 &loop, pcmcia_do_loop_tuple);
1097 EXPORT_SYMBOL(pcmcia_loop_tuple);
1100 struct pcmcia_loop_get {
1106 * pcmcia_do_get_tuple() - internal helper for pcmcia_get_tuple()
1108 * pcmcia_do_get_tuple() is the internal callback for the call from
1109 * pcmcia_get_tuple() to pcmcia_loop_tuple(). As we're only interested in
1110 * the first tuple, return 0 unconditionally. Create a memory buffer large
1111 * enough to hold the content of the tuple, and fill it with the tuple data.
1112 * The caller is responsible to free the buffer.
1114 static int pcmcia_do_get_tuple(struct pcmcia_device *p_dev, tuple_t *tuple,
1117 struct pcmcia_loop_get *get = priv;
1119 *get->buf = kzalloc(tuple->TupleDataLen, GFP_KERNEL);
1121 get->len = tuple->TupleDataLen;
1122 memcpy(*get->buf, tuple->TupleData, tuple->TupleDataLen);
1124 dev_dbg(&p_dev->dev, "do_get_tuple: out of memory\n");
1129 * pcmcia_get_tuple() - get first tuple from CIS
1130 * @p_dev: the struct pcmcia_device which we need to loop for.
1131 * @code: which CIS code shall we look for?
1132 * @buf: pointer to store the buffer to.
1134 * pcmcia_get_tuple() gets the content of the first CIS entry of type @code.
1135 * It returns the buffer length (or zero). The caller is responsible to free
1136 * the buffer passed in @buf.
1138 size_t pcmcia_get_tuple(struct pcmcia_device *p_dev, cisdata_t code,
1139 unsigned char **buf)
1141 struct pcmcia_loop_get get = {
1147 pcmcia_loop_tuple(p_dev, code, pcmcia_do_get_tuple, &get);
1151 EXPORT_SYMBOL(pcmcia_get_tuple);
1155 * pcmcia_do_get_mac() - internal helper for pcmcia_get_mac_from_cis()
1157 * pcmcia_do_get_mac() is the internal callback for the call from
1158 * pcmcia_get_mac_from_cis() to pcmcia_loop_tuple(). We check whether the
1159 * tuple contains a proper LAN_NODE_ID of length 6, and copy the data
1160 * to struct net_device->dev_addr[i].
1162 static int pcmcia_do_get_mac(struct pcmcia_device *p_dev, tuple_t *tuple,
1165 struct net_device *dev = priv;
1168 if (tuple->TupleData[0] != CISTPL_FUNCE_LAN_NODE_ID)
1170 if (tuple->TupleDataLen < ETH_ALEN + 2) {
1171 dev_warn(&p_dev->dev, "Invalid CIS tuple length for "
1176 if (tuple->TupleData[1] != ETH_ALEN) {
1177 dev_warn(&p_dev->dev, "Invalid header for LAN_NODE_ID\n");
1180 for (i = 0; i < 6; i++)
1181 dev->dev_addr[i] = tuple->TupleData[i+2];
1186 * pcmcia_get_mac_from_cis() - read out MAC address from CISTPL_FUNCE
1187 * @p_dev: the struct pcmcia_device for which we want the address.
1188 * @dev: a properly prepared struct net_device to store the info to.
1190 * pcmcia_get_mac_from_cis() reads out the hardware MAC address from
1191 * CISTPL_FUNCE and stores it into struct net_device *dev->dev_addr which
1192 * must be set up properly by the driver (see examples!).
1194 int pcmcia_get_mac_from_cis(struct pcmcia_device *p_dev, struct net_device *dev)
1196 return pcmcia_loop_tuple(p_dev, CISTPL_FUNCE, pcmcia_do_get_mac, dev);
1198 EXPORT_SYMBOL(pcmcia_get_mac_from_cis);