1 // SPDX-License-Identifier: GPL-2.0-only
3 * PCMCIA 16-bit resource management functions
5 * The initial developer of the original code is David A. Hinds
6 * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
7 * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
9 * Copyright (C) 1999 David A. Hinds
10 * Copyright (C) 2004-2010 Dominik Brodowski
13 #include <linux/module.h>
14 #include <linux/kernel.h>
15 #include <linux/interrupt.h>
16 #include <linux/delay.h>
17 #include <linux/pci.h>
18 #include <linux/device.h>
19 #include <linux/netdevice.h>
20 #include <linux/slab.h>
24 #include <pcmcia/ss.h>
25 #include <pcmcia/cistpl.h>
26 #include <pcmcia/cisreg.h>
27 #include <pcmcia/ds.h>
29 #include "cs_internal.h"
32 /* Access speed for IO windows */
34 module_param(io_speed, int, 0444);
37 int pcmcia_validate_mem(struct pcmcia_socket *s)
39 if (s->resource_ops->validate_mem)
40 return s->resource_ops->validate_mem(s);
41 /* if there is no callback, we can assume that everything is OK */
45 struct resource *pcmcia_find_mem_region(u_long base, u_long num, u_long align,
46 int low, struct pcmcia_socket *s)
48 if (s->resource_ops->find_mem)
49 return s->resource_ops->find_mem(base, num, align, low, s);
55 * release_io_space() - release IO ports allocated with alloc_io_space()
57 * @res: resource to release
60 static void release_io_space(struct pcmcia_socket *s, struct resource *res)
62 resource_size_t num = resource_size(res);
65 dev_dbg(&s->dev, "release_io_space for %pR\n", res);
67 for (i = 0; i < MAX_IO_WIN; i++) {
70 if ((s->io[i].res->start <= res->start) &&
71 (s->io[i].res->end >= res->end)) {
72 s->io[i].InUse -= num;
74 release_resource(res);
75 res->start = res->end = 0;
76 res->flags = IORESOURCE_IO;
77 /* Free the window if no one else is using it */
78 if (s->io[i].InUse == 0) {
79 release_resource(s->io[i].res);
89 * alloc_io_space() - allocate IO ports for use by a PCMCIA device
91 * @res: resource to allocate (begin: begin, end: size)
92 * @lines: number of IO lines decoded by the PCMCIA card
94 * Special stuff for managing IO windows, because they are scarce
96 static int alloc_io_space(struct pcmcia_socket *s, struct resource *res,
100 unsigned int base = res->start;
101 unsigned int num = res->end;
104 res->flags |= IORESOURCE_IO;
106 dev_dbg(&s->dev, "alloc_io_space request for %pR, %d lines\n",
109 align = base ? (lines ? 1<<lines : 0) : 1;
110 if (align && (align < num)) {
112 dev_dbg(&s->dev, "odd IO request\n");
115 while (align && (align < num))
118 if (base & ~(align-1)) {
119 dev_dbg(&s->dev, "odd IO request\n");
123 ret = s->resource_ops->find_io(s, res->flags, &base, num, align,
126 dev_dbg(&s->dev, "alloc_io_space request failed (%d)\n", ret);
131 res->end = res->start + num - 1;
134 ret = request_resource(res->parent, res);
137 "request_resource %pR failed: %d\n", res, ret);
139 release_io_space(s, res);
142 dev_dbg(&s->dev, "alloc_io_space request result %d: %pR\n", ret, res);
148 * pcmcia_access_config() - read or write card configuration registers
150 * pcmcia_access_config() reads and writes configuration registers in
151 * attribute memory. Memory window 0 is reserved for this and the tuple
152 * reading services. Drivers must use pcmcia_read_config_byte() or
153 * pcmcia_write_config_byte().
155 static int pcmcia_access_config(struct pcmcia_device *p_dev,
156 off_t where, u8 *val,
157 int (*accessf) (struct pcmcia_socket *s,
158 int attr, unsigned int addr,
159 unsigned int len, void *ptr))
161 struct pcmcia_socket *s;
168 mutex_lock(&s->ops_mutex);
169 c = p_dev->function_config;
171 if (!(c->state & CONFIG_LOCKED)) {
172 dev_dbg(&p_dev->dev, "Configuration isn't locked\n");
173 mutex_unlock(&s->ops_mutex);
177 addr = (p_dev->config_base + where) >> 1;
179 ret = accessf(s, 1, addr, 1, val);
181 mutex_unlock(&s->ops_mutex);
188 * pcmcia_read_config_byte() - read a byte from a card configuration register
190 * pcmcia_read_config_byte() reads a byte from a configuration register in
193 int pcmcia_read_config_byte(struct pcmcia_device *p_dev, off_t where, u8 *val)
195 return pcmcia_access_config(p_dev, where, val, pcmcia_read_cis_mem);
197 EXPORT_SYMBOL(pcmcia_read_config_byte);
201 * pcmcia_write_config_byte() - write a byte to a card configuration register
203 * pcmcia_write_config_byte() writes a byte to a configuration register in
206 int pcmcia_write_config_byte(struct pcmcia_device *p_dev, off_t where, u8 val)
208 return pcmcia_access_config(p_dev, where, &val, pcmcia_write_cis_mem);
210 EXPORT_SYMBOL(pcmcia_write_config_byte);
214 * pcmcia_map_mem_page() - modify iomem window to point to a different offset
215 * @p_dev: pcmcia device
216 * @res: iomem resource already enabled by pcmcia_request_window()
217 * @offset: card_offset to map
219 * pcmcia_map_mem_page() modifies what can be read and written by accessing
220 * an iomem range previously enabled by pcmcia_request_window(), by setting
221 * the card_offset value to @offset.
223 int pcmcia_map_mem_page(struct pcmcia_device *p_dev, struct resource *res,
226 struct pcmcia_socket *s = p_dev->socket;
230 w = ((res->flags & IORESOURCE_BITS & WIN_FLAGS_REQ) >> 2) - 1;
234 mutex_lock(&s->ops_mutex);
235 s->win[w].card_start = offset;
236 ret = s->ops->set_mem_map(s, &s->win[w]);
238 dev_warn(&p_dev->dev, "failed to set_mem_map\n");
239 mutex_unlock(&s->ops_mutex);
242 EXPORT_SYMBOL(pcmcia_map_mem_page);
246 * pcmcia_fixup_iowidth() - reduce io width to 8bit
247 * @p_dev: pcmcia device
249 * pcmcia_fixup_iowidth() allows a PCMCIA device driver to reduce the
250 * IO width to 8bit after having called pcmcia_enable_device()
253 int pcmcia_fixup_iowidth(struct pcmcia_device *p_dev)
255 struct pcmcia_socket *s = p_dev->socket;
256 pccard_io_map io_off = { 0, 0, 0, 0, 1 };
260 mutex_lock(&s->ops_mutex);
262 dev_dbg(&p_dev->dev, "fixup iowidth to 8bit\n");
264 if (!(s->state & SOCKET_PRESENT) ||
265 !(p_dev->function_config->state & CONFIG_LOCKED)) {
266 dev_dbg(&p_dev->dev, "No card? Config not locked?\n");
271 io_on.speed = io_speed;
272 for (i = 0; i < MAX_IO_WIN; i++) {
278 io_on.flags = MAP_ACTIVE | IO_DATA_PATH_WIDTH_8;
279 io_on.start = s->io[i].res->start;
280 io_on.stop = s->io[i].res->end;
282 s->ops->set_io_map(s, &io_off);
284 s->ops->set_io_map(s, &io_on);
287 mutex_unlock(&s->ops_mutex);
291 EXPORT_SYMBOL(pcmcia_fixup_iowidth);
295 * pcmcia_fixup_vpp() - set Vpp to a new voltage level
296 * @p_dev: pcmcia device
297 * @new_vpp: new Vpp voltage
299 * pcmcia_fixup_vpp() allows a PCMCIA device driver to set Vpp to
300 * a new voltage level between calls to pcmcia_enable_device()
301 * and pcmcia_disable_device().
303 int pcmcia_fixup_vpp(struct pcmcia_device *p_dev, unsigned char new_vpp)
305 struct pcmcia_socket *s = p_dev->socket;
308 mutex_lock(&s->ops_mutex);
310 dev_dbg(&p_dev->dev, "fixup Vpp to %d\n", new_vpp);
312 if (!(s->state & SOCKET_PRESENT) ||
313 !(p_dev->function_config->state & CONFIG_LOCKED)) {
314 dev_dbg(&p_dev->dev, "No card? Config not locked?\n");
319 s->socket.Vpp = new_vpp;
320 if (s->ops->set_socket(s, &s->socket)) {
321 dev_warn(&p_dev->dev, "Unable to set VPP\n");
325 p_dev->vpp = new_vpp;
328 mutex_unlock(&s->ops_mutex);
332 EXPORT_SYMBOL(pcmcia_fixup_vpp);
336 * pcmcia_release_configuration() - physically disable a PCMCIA device
337 * @p_dev: pcmcia device
339 * pcmcia_release_configuration() is the 1:1 counterpart to
340 * pcmcia_enable_device(): If a PCMCIA device is no longer used by any
341 * driver, the Vpp voltage is set to 0, IRQs will no longer be generated,
342 * and I/O ranges will be disabled. As pcmcia_release_io() and
343 * pcmcia_release_window() still need to be called, device drivers are
344 * expected to call pcmcia_disable_device() instead.
346 int pcmcia_release_configuration(struct pcmcia_device *p_dev)
348 pccard_io_map io = { 0, 0, 0, 0, 1 };
349 struct pcmcia_socket *s = p_dev->socket;
353 mutex_lock(&s->ops_mutex);
354 c = p_dev->function_config;
355 if (p_dev->_locked) {
357 if (--(s->lock_count) == 0) {
358 s->socket.flags = SS_OUTPUT_ENA; /* Is this correct? */
360 s->socket.io_irq = 0;
361 s->ops->set_socket(s, &s->socket);
364 if (c->state & CONFIG_LOCKED) {
365 c->state &= ~CONFIG_LOCKED;
366 if (c->state & CONFIG_IO_REQ)
367 for (i = 0; i < MAX_IO_WIN; i++) {
371 if (s->io[i].Config != 0)
374 s->ops->set_io_map(s, &io);
377 mutex_unlock(&s->ops_mutex);
384 * pcmcia_release_io() - release I/O allocated by a PCMCIA device
385 * @p_dev: pcmcia device
387 * pcmcia_release_io() releases the I/O ranges allocated by a PCMCIA
388 * device. This may be invoked some time after a card ejection has
389 * already dumped the actual socket configuration, so if the client is
390 * "stale", we don't bother checking the port ranges against the
391 * current socket values.
393 static void pcmcia_release_io(struct pcmcia_device *p_dev)
395 struct pcmcia_socket *s = p_dev->socket;
398 mutex_lock(&s->ops_mutex);
402 c = p_dev->function_config;
404 release_io_space(s, &c->io[0]);
407 release_io_space(s, &c->io[1]);
410 c->state &= ~CONFIG_IO_REQ;
413 mutex_unlock(&s->ops_mutex);
414 } /* pcmcia_release_io */
418 * pcmcia_release_window() - release reserved iomem for PCMCIA devices
419 * @p_dev: pcmcia device
420 * @res: iomem resource to release
422 * pcmcia_release_window() releases &struct resource *res which was
423 * previously reserved by calling pcmcia_request_window().
425 int pcmcia_release_window(struct pcmcia_device *p_dev, struct resource *res)
427 struct pcmcia_socket *s = p_dev->socket;
431 dev_dbg(&p_dev->dev, "releasing window %pR\n", res);
433 w = ((res->flags & IORESOURCE_BITS & WIN_FLAGS_REQ) >> 2) - 1;
437 mutex_lock(&s->ops_mutex);
440 if (!(p_dev->_win & CLIENT_WIN_REQ(w))) {
441 dev_dbg(&p_dev->dev, "not releasing unknown window\n");
442 mutex_unlock(&s->ops_mutex);
446 /* Shut down memory window */
447 win->flags &= ~MAP_ACTIVE;
448 s->ops->set_mem_map(s, win);
449 s->state &= ~SOCKET_WIN_REQ(w);
451 /* Release system memory */
453 release_resource(res);
454 release_resource(win->res);
458 res->start = res->end = 0;
459 res->flags = IORESOURCE_MEM;
460 p_dev->_win &= ~CLIENT_WIN_REQ(w);
461 mutex_unlock(&s->ops_mutex);
464 } /* pcmcia_release_window */
465 EXPORT_SYMBOL(pcmcia_release_window);
469 * pcmcia_enable_device() - set up and activate a PCMCIA device
470 * @p_dev: the associated PCMCIA device
472 * pcmcia_enable_device() physically enables a PCMCIA device. It parses
473 * the flags passed to in @flags and stored in @p_dev->flags and sets up
474 * the Vpp voltage, enables the speaker line, I/O ports and store proper
475 * values to configuration registers.
477 int pcmcia_enable_device(struct pcmcia_device *p_dev)
481 struct pcmcia_socket *s = p_dev->socket;
484 unsigned char status = 0;
485 unsigned char ext_status = 0;
486 unsigned char option = 0;
487 unsigned int flags = p_dev->config_flags;
489 if (!(s->state & SOCKET_PRESENT))
492 mutex_lock(&s->ops_mutex);
493 c = p_dev->function_config;
494 if (c->state & CONFIG_LOCKED) {
495 mutex_unlock(&s->ops_mutex);
496 dev_dbg(&p_dev->dev, "Configuration is locked\n");
500 /* Do power control. We don't allow changes in Vcc. */
501 s->socket.Vpp = p_dev->vpp;
502 if (s->ops->set_socket(s, &s->socket)) {
503 mutex_unlock(&s->ops_mutex);
504 dev_warn(&p_dev->dev, "Unable to set socket state\n");
508 /* Pick memory or I/O card, DMA mode, interrupt */
509 if (p_dev->_io || flags & CONF_ENABLE_IRQ)
510 flags |= CONF_ENABLE_IOCARD;
511 if (flags & CONF_ENABLE_IOCARD)
512 s->socket.flags |= SS_IOCARD;
513 if (flags & CONF_ENABLE_ZVCARD)
514 s->socket.flags |= SS_ZVCARD | SS_IOCARD;
515 if (flags & CONF_ENABLE_SPKR) {
516 s->socket.flags |= SS_SPKR_ENA;
517 status = CCSR_AUDIO_ENA;
518 if (!(p_dev->config_regs & PRESENT_STATUS))
519 dev_warn(&p_dev->dev, "speaker requested, but "
520 "PRESENT_STATUS not set!\n");
522 if (flags & CONF_ENABLE_IRQ)
523 s->socket.io_irq = s->pcmcia_irq;
525 s->socket.io_irq = 0;
526 if (flags & CONF_ENABLE_ESR) {
527 p_dev->config_regs |= PRESENT_EXT_STATUS;
528 ext_status = ESR_REQ_ATTN_ENA;
530 s->ops->set_socket(s, &s->socket);
534 "enable_device: V %d, flags %x, base %x, regs %x, idx %x\n",
535 p_dev->vpp, flags, p_dev->config_base, p_dev->config_regs,
536 p_dev->config_index);
538 /* Set up CIS configuration registers */
539 base = p_dev->config_base;
540 if (p_dev->config_regs & PRESENT_COPY) {
542 dev_dbg(&p_dev->dev, "clearing CISREG_SCR\n");
543 pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &tmp);
545 if (p_dev->config_regs & PRESENT_PIN_REPLACE) {
547 dev_dbg(&p_dev->dev, "clearing CISREG_PRR\n");
548 pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &tmp);
550 if (p_dev->config_regs & PRESENT_OPTION) {
551 if (s->functions == 1) {
552 option = p_dev->config_index & COR_CONFIG_MASK;
554 option = p_dev->config_index & COR_MFC_CONFIG_MASK;
555 option |= COR_FUNC_ENA|COR_IREQ_ENA;
556 if (p_dev->config_regs & PRESENT_IOBASE_0)
557 option |= COR_ADDR_DECODE;
559 if ((flags & CONF_ENABLE_IRQ) &&
560 !(flags & CONF_ENABLE_PULSE_IRQ))
561 option |= COR_LEVEL_REQ;
562 pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &option);
565 if (p_dev->config_regs & PRESENT_STATUS)
566 pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &status);
568 if (p_dev->config_regs & PRESENT_EXT_STATUS)
569 pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1,
572 if (p_dev->config_regs & PRESENT_IOBASE_0) {
573 u8 b = c->io[0].start & 0xff;
574 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b);
575 b = (c->io[0].start >> 8) & 0xff;
576 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b);
578 if (p_dev->config_regs & PRESENT_IOSIZE) {
579 u8 b = resource_size(&c->io[0]) + resource_size(&c->io[1]) - 1;
580 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b);
583 /* Configure I/O windows */
584 if (c->state & CONFIG_IO_REQ) {
585 iomap.speed = io_speed;
586 for (i = 0; i < MAX_IO_WIN; i++)
589 iomap.flags = MAP_ACTIVE;
590 switch (s->io[i].res->flags & IO_DATA_PATH_WIDTH) {
591 case IO_DATA_PATH_WIDTH_16:
592 iomap.flags |= MAP_16BIT; break;
593 case IO_DATA_PATH_WIDTH_AUTO:
594 iomap.flags |= MAP_AUTOSZ; break;
598 iomap.start = s->io[i].res->start;
599 iomap.stop = s->io[i].res->end;
600 s->ops->set_io_map(s, &iomap);
605 c->state |= CONFIG_LOCKED;
607 mutex_unlock(&s->ops_mutex);
609 } /* pcmcia_enable_device */
610 EXPORT_SYMBOL(pcmcia_enable_device);
614 * pcmcia_request_io() - attempt to reserve port ranges for PCMCIA devices
615 * @p_dev: the associated PCMCIA device
617 * pcmcia_request_io() attempts to reserve the IO port ranges specified in
618 * &struct pcmcia_device @p_dev->resource[0] and @p_dev->resource[1]. The
619 * "start" value is the requested start of the IO port resource; "end"
620 * reflects the number of ports requested. The number of IO lines requested
621 * is specified in &struct pcmcia_device @p_dev->io_lines.
623 int pcmcia_request_io(struct pcmcia_device *p_dev)
625 struct pcmcia_socket *s = p_dev->socket;
626 config_t *c = p_dev->function_config;
629 mutex_lock(&s->ops_mutex);
630 dev_dbg(&p_dev->dev, "pcmcia_request_io: %pR , %pR",
631 &c->io[0], &c->io[1]);
633 if (!(s->state & SOCKET_PRESENT)) {
634 dev_dbg(&p_dev->dev, "pcmcia_request_io: No card present\n");
638 if (c->state & CONFIG_LOCKED) {
639 dev_dbg(&p_dev->dev, "Configuration is locked\n");
642 if (c->state & CONFIG_IO_REQ) {
643 dev_dbg(&p_dev->dev, "IO already configured\n");
647 ret = alloc_io_space(s, &c->io[0], p_dev->io_lines);
652 ret = alloc_io_space(s, &c->io[1], p_dev->io_lines);
654 struct resource tmp = c->io[0];
655 /* release the previously allocated resource */
656 release_io_space(s, &c->io[0]);
657 /* but preserve the settings, for they worked... */
658 c->io[0].end = resource_size(&tmp);
659 c->io[0].start = tmp.start;
660 c->io[0].flags = tmp.flags;
666 c->state |= CONFIG_IO_REQ;
669 dev_dbg(&p_dev->dev, "pcmcia_request_io succeeded: %pR , %pR",
670 &c->io[0], &c->io[1]);
672 mutex_unlock(&s->ops_mutex);
675 } /* pcmcia_request_io */
676 EXPORT_SYMBOL(pcmcia_request_io);
680 * pcmcia_request_irq() - attempt to request a IRQ for a PCMCIA device
681 * @p_dev: the associated PCMCIA device
682 * @handler: IRQ handler to register
684 * pcmcia_request_irq() is a wrapper around request_irq() which allows
685 * the PCMCIA core to clean up the registration in pcmcia_disable_device().
686 * Drivers are free to use request_irq() directly, but then they need to
687 * call free_irq() themselfves, too. Also, only %IRQF_SHARED capable IRQ
688 * handlers are allowed.
690 int __must_check pcmcia_request_irq(struct pcmcia_device *p_dev,
691 irq_handler_t handler)
698 ret = request_irq(p_dev->irq, handler, IRQF_SHARED,
699 p_dev->devname, p_dev->priv);
705 EXPORT_SYMBOL(pcmcia_request_irq);
708 #ifdef CONFIG_PCMCIA_PROBE
710 /* mask of IRQs already reserved by other cards, we should avoid using them */
711 static u8 pcmcia_used_irq[32];
713 static irqreturn_t test_action(int cpl, void *dev_id)
719 * pcmcia_setup_isa_irq() - determine whether an ISA IRQ can be used
720 * @p_dev: the associated PCMCIA device
721 * @type: IRQ type (flags)
723 * locking note: must be called with ops_mutex locked.
725 static int pcmcia_setup_isa_irq(struct pcmcia_device *p_dev, int type)
727 struct pcmcia_socket *s = p_dev->socket;
728 unsigned int try, irq;
729 u32 mask = s->irq_mask;
732 for (try = 0; try < 64; try++) {
738 /* marked as available by driver, not blocked by userspace? */
739 if (!((mask >> irq) & 1))
742 /* avoid an IRQ which is already used by another PCMCIA card */
743 if ((try < 32) && pcmcia_used_irq[irq])
746 /* register the correct driver, if possible, to check whether
747 * registering a dummy handle works, i.e. if the IRQ isn't
748 * marked as used by the kernel resource management core */
749 ret = request_irq(irq, test_action, type, p_dev->devname,
752 free_irq(irq, p_dev);
753 p_dev->irq = s->pcmcia_irq = irq;
754 pcmcia_used_irq[irq]++;
762 void pcmcia_cleanup_irq(struct pcmcia_socket *s)
764 pcmcia_used_irq[s->pcmcia_irq]--;
768 #else /* CONFIG_PCMCIA_PROBE */
770 static int pcmcia_setup_isa_irq(struct pcmcia_device *p_dev, int type)
775 void pcmcia_cleanup_irq(struct pcmcia_socket *s)
781 #endif /* CONFIG_PCMCIA_PROBE */
785 * pcmcia_setup_irq() - determine IRQ to be used for device
786 * @p_dev: the associated PCMCIA device
788 * locking note: must be called with ops_mutex locked.
790 int pcmcia_setup_irq(struct pcmcia_device *p_dev)
792 struct pcmcia_socket *s = p_dev->socket;
797 /* already assigned? */
799 p_dev->irq = s->pcmcia_irq;
803 /* prefer an exclusive ISA irq */
804 if (!pcmcia_setup_isa_irq(p_dev, 0))
807 /* but accept a shared ISA irq */
808 if (!pcmcia_setup_isa_irq(p_dev, IRQF_SHARED))
811 /* but use the PCI irq otherwise */
813 p_dev->irq = s->pcmcia_irq = s->pci_irq;
822 * pcmcia_request_window() - attempt to reserve iomem for PCMCIA devices
823 * @p_dev: the associated PCMCIA device
824 * @res: &struct resource pointing to p_dev->resource[2..5]
825 * @speed: access speed
827 * pcmcia_request_window() attepts to reserve an iomem ranges specified in
828 * &struct resource @res pointing to one of the entries in
829 * &struct pcmcia_device @p_dev->resource[2..5]. The "start" value is the
830 * requested start of the IO mem resource; "end" reflects the size
833 int pcmcia_request_window(struct pcmcia_device *p_dev, struct resource *res,
836 struct pcmcia_socket *s = p_dev->socket;
841 dev_dbg(&p_dev->dev, "request_window %pR %d\n", res, speed);
843 if (!(s->state & SOCKET_PRESENT)) {
844 dev_dbg(&p_dev->dev, "No card present\n");
848 /* Window size defaults to smallest available */
850 res->end = s->map_size;
851 align = (s->features & SS_CAP_MEM_ALIGN) ? res->end : s->map_size;
852 if (res->end & (s->map_size-1)) {
853 dev_dbg(&p_dev->dev, "invalid map size\n");
856 if ((res->start && (s->features & SS_CAP_STATIC_MAP)) ||
857 (res->start & (align-1))) {
858 dev_dbg(&p_dev->dev, "invalid base address\n");
864 /* Allocate system memory window */
865 mutex_lock(&s->ops_mutex);
866 for (w = 0; w < MAX_WIN; w++)
867 if (!(s->state & SOCKET_WIN_REQ(w)))
870 dev_dbg(&p_dev->dev, "all windows are used already\n");
871 mutex_unlock(&s->ops_mutex);
877 if (!(s->features & SS_CAP_STATIC_MAP)) {
878 win->res = pcmcia_find_mem_region(res->start, res->end, align,
881 dev_dbg(&p_dev->dev, "allocating mem region failed\n");
882 mutex_unlock(&s->ops_mutex);
886 p_dev->_win |= CLIENT_WIN_REQ(w);
888 /* Configure the socket controller */
890 win->flags = res->flags & WIN_FLAGS_MAP;
894 if (s->ops->set_mem_map(s, win) != 0) {
895 dev_dbg(&p_dev->dev, "failed to set memory mapping\n");
896 mutex_unlock(&s->ops_mutex);
899 s->state |= SOCKET_WIN_REQ(w);
901 /* Return window handle */
902 if (s->features & SS_CAP_STATIC_MAP)
903 res->start = win->static_start;
905 res->start = win->res->start;
907 /* convert to new-style resources */
908 res->end += res->start - 1;
909 res->flags &= ~WIN_FLAGS_REQ;
910 res->flags |= (win->map << 2) | IORESOURCE_MEM;
911 res->parent = win->res;
913 request_resource(&iomem_resource, res);
915 dev_dbg(&p_dev->dev, "request_window results in %pR\n", res);
917 mutex_unlock(&s->ops_mutex);
920 } /* pcmcia_request_window */
921 EXPORT_SYMBOL(pcmcia_request_window);
925 * pcmcia_disable_device() - disable and clean up a PCMCIA device
926 * @p_dev: the associated PCMCIA device
928 * pcmcia_disable_device() is the driver-callable counterpart to
929 * pcmcia_enable_device(): If a PCMCIA device is no longer used,
930 * drivers are expected to clean up and disable the device by calling
931 * this function. Any I/O ranges (iomem and ioports) will be released,
932 * the Vpp voltage will be set to 0, and IRQs will no longer be
933 * generated -- at least if there is no other card function (of
934 * multifunction devices) being used.
936 void pcmcia_disable_device(struct pcmcia_device *p_dev)
940 dev_dbg(&p_dev->dev, "disabling device\n");
942 for (i = 0; i < MAX_WIN; i++) {
943 struct resource *res = p_dev->resource[MAX_IO_WIN + i];
944 if (res->flags & WIN_FLAGS_REQ)
945 pcmcia_release_window(p_dev, res);
948 pcmcia_release_configuration(p_dev);
949 pcmcia_release_io(p_dev);
951 free_irq(p_dev->irq, p_dev->priv);
955 EXPORT_SYMBOL(pcmcia_disable_device);