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 */
36 static int io_speed = 0;
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];
49 * Special stuff for managing IO windows, because they are scarce
52 static int alloc_io_space(struct pcmcia_socket *s, u_int attr,
53 unsigned int *base, unsigned int num, u_int lines)
56 unsigned int try, align;
58 align = (*base) ? (lines ? 1<<lines : 0) : 1;
59 if (align && (align < num)) {
61 dev_dbg(&s->dev, "odd IO request: num %#x align %#x\n",
65 while (align && (align < num)) align <<= 1;
67 if (*base & ~(align-1)) {
68 dev_dbg(&s->dev, "odd IO request: base %#x align %#x\n",
72 if ((s->features & SS_CAP_STATIC_MAP) && s->io_offset) {
73 *base = s->io_offset | (*base & 0x0fff);
76 /* Check for an already-allocated window that must conflict with
77 * what was asked for. It is a hack because it does not catch all
78 * potential conflicts, just the most obvious ones.
80 for (i = 0; i < MAX_IO_WIN; i++)
81 if ((s->io[i].res) && *base &&
82 ((s->io[i].res->start & (align-1)) == *base))
84 for (i = 0; i < MAX_IO_WIN; i++) {
86 s->io[i].res = pcmcia_find_io_region(*base, num, align, s);
88 *base = s->io[i].res->start;
89 s->io[i].res->flags = (s->io[i].res->flags & ~IORESOURCE_BITS) | (attr & IORESOURCE_BITS);
94 } else if ((s->io[i].res->flags & IORESOURCE_BITS) != (attr & IORESOURCE_BITS))
96 /* Try to extend top of window */
97 try = s->io[i].res->end + 1;
98 if ((*base == 0) || (*base == try))
99 if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start,
100 s->io[i].res->end + num, s) == 0) {
102 s->io[i].InUse += num;
105 /* Try to extend bottom of window */
106 try = s->io[i].res->start - num;
107 if ((*base == 0) || (*base == try))
108 if (pcmcia_adjust_io_region(s->io[i].res, s->io[i].res->start - num,
109 s->io[i].res->end, s) == 0) {
111 s->io[i].InUse += num;
115 return (i == MAX_IO_WIN);
116 } /* alloc_io_space */
119 static void release_io_space(struct pcmcia_socket *s, unsigned int base,
124 for (i = 0; i < MAX_IO_WIN; i++) {
127 if ((s->io[i].res->start <= base) &&
128 (s->io[i].res->end >= base+num-1)) {
129 s->io[i].InUse -= num;
130 /* Free the window if no one else is using it */
131 if (s->io[i].InUse == 0) {
132 release_resource(s->io[i].res);
138 } /* release_io_space */
141 /** pccard_access_configuration_register
143 * Access_configuration_register() reads and writes configuration
144 * registers in attribute memory. Memory window 0 is reserved for
145 * this and the tuple reading services.
148 int pcmcia_access_configuration_register(struct pcmcia_device *p_dev,
151 struct pcmcia_socket *s;
156 if (!p_dev || !p_dev->function_config)
160 c = p_dev->function_config;
162 if (!(c->state & CONFIG_LOCKED)) {
163 dev_dbg(&s->dev, "Configuration isnt't locked\n");
167 addr = (c->ConfigBase + reg->Offset) >> 1;
169 switch (reg->Action) {
171 pcmcia_read_cis_mem(s, 1, addr, 1, &val);
176 pcmcia_write_cis_mem(s, 1, addr, 1, &val);
179 dev_dbg(&s->dev, "Invalid conf register request\n");
184 } /* pcmcia_access_configuration_register */
185 EXPORT_SYMBOL(pcmcia_access_configuration_register);
188 /** pcmcia_get_window
190 int pcmcia_get_window(struct pcmcia_socket *s, window_handle_t *handle,
191 int idx, win_req_t *req)
196 if (!s || !(s->state & SOCKET_PRESENT))
198 for (w = idx; w < MAX_WIN; w++)
199 if (s->state & SOCKET_WIN_REQ(w))
204 req->Base = win->ctl.res->start;
205 req->Size = win->ctl.res->end - win->ctl.res->start + 1;
206 req->AccessSpeed = win->ctl.speed;
208 if (win->ctl.flags & MAP_ATTRIB)
209 req->Attributes |= WIN_MEMORY_TYPE_AM;
210 if (win->ctl.flags & MAP_ACTIVE)
211 req->Attributes |= WIN_ENABLE;
212 if (win->ctl.flags & MAP_16BIT)
213 req->Attributes |= WIN_DATA_WIDTH_16;
214 if (win->ctl.flags & MAP_USE_WAIT)
215 req->Attributes |= WIN_USE_WAIT;
218 } /* pcmcia_get_window */
219 EXPORT_SYMBOL(pcmcia_get_window);
222 /** pcmcia_get_mem_page
224 * Change the card address of an already open memory window.
226 int pcmcia_get_mem_page(struct pcmcia_socket *skt, window_handle_t wh,
229 window_handle_t win = wh;
231 if ((win == NULL) || (win->magic != WINDOW_MAGIC))
234 req->CardOffset = win->ctl.card_start;
236 } /* pcmcia_get_mem_page */
237 EXPORT_SYMBOL(pcmcia_get_mem_page);
240 int pcmcia_map_mem_page(struct pcmcia_device *p_dev, window_handle_t wh,
243 struct pcmcia_socket *s;
244 window_handle_t win = wh;
246 if ((win == NULL) || (win->magic != WINDOW_MAGIC))
249 if (req->Page != 0) {
250 dev_dbg(&s->dev, "failure: requested page is zero\n");
253 win->ctl.card_start = req->CardOffset;
254 if (s->ops->set_mem_map(s, &win->ctl) != 0) {
255 dev_dbg(&s->dev, "failed to set_mem_map\n");
259 } /* pcmcia_map_mem_page */
260 EXPORT_SYMBOL(pcmcia_map_mem_page);
263 /** pcmcia_modify_configuration
265 * Modify a locked socket configuration
267 int pcmcia_modify_configuration(struct pcmcia_device *p_dev,
270 struct pcmcia_socket *s;
274 c = p_dev->function_config;
276 if (!(s->state & SOCKET_PRESENT)) {
277 dev_dbg(&s->dev, "No card present\n");
280 if (!(c->state & CONFIG_LOCKED)) {
281 dev_dbg(&s->dev, "Configuration isnt't locked\n");
285 if (mod->Attributes & CONF_IRQ_CHANGE_VALID) {
286 if (mod->Attributes & CONF_ENABLE_IRQ) {
287 c->Attributes |= CONF_ENABLE_IRQ;
288 s->socket.io_irq = s->irq.AssignedIRQ;
290 c->Attributes &= ~CONF_ENABLE_IRQ;
291 s->socket.io_irq = 0;
293 s->ops->set_socket(s, &s->socket);
296 if (mod->Attributes & CONF_VCC_CHANGE_VALID) {
297 dev_dbg(&s->dev, "changing Vcc is not allowed at this time\n");
301 /* We only allow changing Vpp1 and Vpp2 to the same value */
302 if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) &&
303 (mod->Attributes & CONF_VPP2_CHANGE_VALID)) {
304 if (mod->Vpp1 != mod->Vpp2) {
305 dev_dbg(&s->dev, "Vpp1 and Vpp2 must be the same\n");
308 s->socket.Vpp = mod->Vpp1;
309 if (s->ops->set_socket(s, &s->socket)) {
310 dev_printk(KERN_WARNING, &s->dev,
311 "Unable to set VPP\n");
314 } else if ((mod->Attributes & CONF_VPP1_CHANGE_VALID) ||
315 (mod->Attributes & CONF_VPP2_CHANGE_VALID)) {
316 dev_dbg(&s->dev, "changing Vcc is not allowed at this time\n");
320 if (mod->Attributes & CONF_IO_CHANGE_WIDTH) {
321 pccard_io_map io_off = { 0, 0, 0, 0, 1 };
325 io_on.speed = io_speed;
326 for (i = 0; i < MAX_IO_WIN; i++) {
332 io_on.flags = MAP_ACTIVE | IO_DATA_PATH_WIDTH_8;
333 io_on.start = s->io[i].res->start;
334 io_on.stop = s->io[i].res->end;
336 s->ops->set_io_map(s, &io_off);
338 s->ops->set_io_map(s, &io_on);
343 } /* modify_configuration */
344 EXPORT_SYMBOL(pcmcia_modify_configuration);
347 int pcmcia_release_configuration(struct pcmcia_device *p_dev)
349 pccard_io_map io = { 0, 0, 0, 0, 1 };
350 struct pcmcia_socket *s = p_dev->socket;
351 config_t *c = p_dev->function_config;
354 if (p_dev->_locked) {
356 if (--(s->lock_count) == 0) {
357 s->socket.flags = SS_OUTPUT_ENA; /* Is this correct? */
359 s->socket.io_irq = 0;
360 s->ops->set_socket(s, &s->socket);
363 if (c->state & CONFIG_LOCKED) {
364 c->state &= ~CONFIG_LOCKED;
365 if (c->state & CONFIG_IO_REQ)
366 for (i = 0; i < MAX_IO_WIN; i++) {
370 if (s->io[i].Config != 0)
373 s->ops->set_io_map(s, &io);
378 } /* pcmcia_release_configuration */
381 /** pcmcia_release_io
383 * Release_io() releases the I/O ranges allocated by a client. This
384 * may be invoked some time after a card ejection has already dumped
385 * the actual socket configuration, so if the client is "stale", we
386 * don't bother checking the port ranges against the current socket
389 static int pcmcia_release_io(struct pcmcia_device *p_dev, io_req_t *req)
391 struct pcmcia_socket *s = p_dev->socket;
392 config_t *c = p_dev->function_config;
399 if ((c->io.BasePort1 != req->BasePort1) ||
400 (c->io.NumPorts1 != req->NumPorts1) ||
401 (c->io.BasePort2 != req->BasePort2) ||
402 (c->io.NumPorts2 != req->NumPorts2))
405 c->state &= ~CONFIG_IO_REQ;
407 release_io_space(s, req->BasePort1, req->NumPorts1);
409 release_io_space(s, req->BasePort2, req->NumPorts2);
412 } /* pcmcia_release_io */
415 static int pcmcia_release_irq(struct pcmcia_device *p_dev, irq_req_t *req)
417 struct pcmcia_socket *s = p_dev->socket;
418 config_t *c= p_dev->function_config;
424 if (c->state & CONFIG_LOCKED)
426 if (c->irq.Attributes != req->Attributes) {
427 dev_dbg(&s->dev, "IRQ attributes must match assigned ones\n");
430 if (s->irq.AssignedIRQ != req->AssignedIRQ) {
431 dev_dbg(&s->dev, "IRQ must match assigned one\n");
434 if (--s->irq.Config == 0) {
435 c->state &= ~CONFIG_IRQ_REQ;
436 s->irq.AssignedIRQ = 0;
439 if (req->Attributes & IRQ_HANDLE_PRESENT) {
440 free_irq(req->AssignedIRQ, req->Instance);
443 #ifdef CONFIG_PCMCIA_PROBE
444 pcmcia_used_irq[req->AssignedIRQ]--;
448 } /* pcmcia_release_irq */
451 int pcmcia_release_window(struct pcmcia_device *p_dev, window_handle_t wh)
453 struct pcmcia_socket *s;
454 window_handle_t win = wh;
456 if ((win == NULL) || (win->magic != WINDOW_MAGIC))
459 if (!(win->handle->_win & CLIENT_WIN_REQ(win->index))) {
460 dev_dbg(&s->dev, "not releasing unknown window\n");
464 /* Shut down memory window */
465 win->ctl.flags &= ~MAP_ACTIVE;
466 s->ops->set_mem_map(s, &win->ctl);
467 s->state &= ~SOCKET_WIN_REQ(win->index);
469 /* Release system memory */
471 release_resource(win->ctl.res);
475 win->handle->_win &= ~CLIENT_WIN_REQ(win->index);
480 } /* pcmcia_release_window */
481 EXPORT_SYMBOL(pcmcia_release_window);
484 int pcmcia_request_configuration(struct pcmcia_device *p_dev,
489 struct pcmcia_socket *s = p_dev->socket;
493 if (!(s->state & SOCKET_PRESENT))
496 if (req->IntType & INT_CARDBUS) {
497 dev_dbg(&s->dev, "IntType may not be INT_CARDBUS\n");
500 c = p_dev->function_config;
501 if (c->state & CONFIG_LOCKED) {
502 dev_dbg(&s->dev, "Configuration is locked\n");
506 /* Do power control. We don't allow changes in Vcc. */
507 s->socket.Vpp = req->Vpp;
508 if (s->ops->set_socket(s, &s->socket)) {
509 dev_printk(KERN_WARNING, &s->dev,
510 "Unable to set socket state\n");
514 /* Pick memory or I/O card, DMA mode, interrupt */
515 c->IntType = req->IntType;
516 c->Attributes = req->Attributes;
517 if (req->IntType & INT_MEMORY_AND_IO)
518 s->socket.flags |= SS_IOCARD;
519 if (req->IntType & INT_ZOOMED_VIDEO)
520 s->socket.flags |= SS_ZVCARD | SS_IOCARD;
521 if (req->Attributes & CONF_ENABLE_DMA)
522 s->socket.flags |= SS_DMA_MODE;
523 if (req->Attributes & CONF_ENABLE_SPKR)
524 s->socket.flags |= SS_SPKR_ENA;
525 if (req->Attributes & CONF_ENABLE_IRQ)
526 s->socket.io_irq = s->irq.AssignedIRQ;
528 s->socket.io_irq = 0;
529 s->ops->set_socket(s, &s->socket);
532 /* Set up CIS configuration registers */
533 base = c->ConfigBase = req->ConfigBase;
534 c->CardValues = req->Present;
535 if (req->Present & PRESENT_COPY) {
537 pcmcia_write_cis_mem(s, 1, (base + CISREG_SCR)>>1, 1, &c->Copy);
539 if (req->Present & PRESENT_OPTION) {
540 if (s->functions == 1) {
541 c->Option = req->ConfigIndex & COR_CONFIG_MASK;
543 c->Option = req->ConfigIndex & COR_MFC_CONFIG_MASK;
544 c->Option |= COR_FUNC_ENA|COR_IREQ_ENA;
545 if (req->Present & PRESENT_IOBASE_0)
546 c->Option |= COR_ADDR_DECODE;
548 if (c->state & CONFIG_IRQ_REQ)
549 if (!(c->irq.Attributes & IRQ_FORCED_PULSE))
550 c->Option |= COR_LEVEL_REQ;
551 pcmcia_write_cis_mem(s, 1, (base + CISREG_COR)>>1, 1, &c->Option);
554 if (req->Present & PRESENT_STATUS) {
555 c->Status = req->Status;
556 pcmcia_write_cis_mem(s, 1, (base + CISREG_CCSR)>>1, 1, &c->Status);
558 if (req->Present & PRESENT_PIN_REPLACE) {
560 pcmcia_write_cis_mem(s, 1, (base + CISREG_PRR)>>1, 1, &c->Pin);
562 if (req->Present & PRESENT_EXT_STATUS) {
563 c->ExtStatus = req->ExtStatus;
564 pcmcia_write_cis_mem(s, 1, (base + CISREG_ESR)>>1, 1, &c->ExtStatus);
566 if (req->Present & PRESENT_IOBASE_0) {
567 u_char b = c->io.BasePort1 & 0xff;
568 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_0)>>1, 1, &b);
569 b = (c->io.BasePort1 >> 8) & 0xff;
570 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOBASE_1)>>1, 1, &b);
572 if (req->Present & PRESENT_IOSIZE) {
573 u_char b = c->io.NumPorts1 + c->io.NumPorts2 - 1;
574 pcmcia_write_cis_mem(s, 1, (base + CISREG_IOSIZE)>>1, 1, &b);
577 /* Configure I/O windows */
578 if (c->state & CONFIG_IO_REQ) {
579 iomap.speed = io_speed;
580 for (i = 0; i < MAX_IO_WIN; i++)
583 iomap.flags = MAP_ACTIVE;
584 switch (s->io[i].res->flags & IO_DATA_PATH_WIDTH) {
585 case IO_DATA_PATH_WIDTH_16:
586 iomap.flags |= MAP_16BIT; break;
587 case IO_DATA_PATH_WIDTH_AUTO:
588 iomap.flags |= MAP_AUTOSZ; break;
592 iomap.start = s->io[i].res->start;
593 iomap.stop = s->io[i].res->end;
594 s->ops->set_io_map(s, &iomap);
599 c->state |= CONFIG_LOCKED;
602 } /* pcmcia_request_configuration */
603 EXPORT_SYMBOL(pcmcia_request_configuration);
606 /** pcmcia_request_io
608 * Request_io() reserves ranges of port addresses for a socket.
609 * I have not implemented range sharing or alias addressing.
611 int pcmcia_request_io(struct pcmcia_device *p_dev, io_req_t *req)
613 struct pcmcia_socket *s = p_dev->socket;
616 if (!(s->state & SOCKET_PRESENT)) {
617 dev_dbg(&s->dev, "No card present\n");
623 c = p_dev->function_config;
624 if (c->state & CONFIG_LOCKED) {
625 dev_dbg(&s->dev, "Configuration is locked\n");
628 if (c->state & CONFIG_IO_REQ) {
629 dev_dbg(&s->dev, "IO already configured\n");
632 if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)) {
633 dev_dbg(&s->dev, "bad attribute setting for IO region 1\n");
636 if ((req->NumPorts2 > 0) &&
637 (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))) {
638 dev_dbg(&s->dev, "bad attribute setting for IO region 2\n");
642 dev_dbg(&s->dev, "trying to allocate resource 1\n");
643 if (alloc_io_space(s, req->Attributes1, &req->BasePort1,
644 req->NumPorts1, req->IOAddrLines)) {
645 dev_dbg(&s->dev, "allocation of resource 1 failed\n");
649 if (req->NumPorts2) {
650 dev_dbg(&s->dev, "trying to allocate resource 2\n");
651 if (alloc_io_space(s, req->Attributes2, &req->BasePort2,
652 req->NumPorts2, req->IOAddrLines)) {
653 dev_dbg(&s->dev, "allocation of resource 2 failed\n");
654 release_io_space(s, req->BasePort1, req->NumPorts1);
660 c->state |= CONFIG_IO_REQ;
663 } /* pcmcia_request_io */
664 EXPORT_SYMBOL(pcmcia_request_io);
667 /** pcmcia_request_irq
669 * Request_irq() reserves an irq for this client.
671 * Also, since Linux only reserves irq's when they are actually
672 * hooked, we don't guarantee that an irq will still be available
673 * when the configuration is locked. Now that I think about it,
674 * there might be a way to fix this using a dummy handler.
677 #ifdef CONFIG_PCMCIA_PROBE
678 static irqreturn_t test_action(int cpl, void *dev_id)
684 int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req)
686 struct pcmcia_socket *s = p_dev->socket;
688 int ret = -EINVAL, irq = 0;
691 if (!(s->state & SOCKET_PRESENT)) {
692 dev_dbg(&s->dev, "No card present\n");
695 c = p_dev->function_config;
696 if (c->state & CONFIG_LOCKED) {
697 dev_dbg(&s->dev, "Configuration is locked\n");
700 if (c->state & CONFIG_IRQ_REQ) {
701 dev_dbg(&s->dev, "IRQ already configured\n");
705 /* Decide what type of interrupt we are registering */
707 if (s->functions > 1) /* All of this ought to be handled higher up */
709 else if (req->Attributes & IRQ_TYPE_DYNAMIC_SHARING)
711 else printk(KERN_WARNING "pcmcia: Driver needs updating to support IRQ sharing.\n");
713 #ifdef CONFIG_PCMCIA_PROBE
716 /* if the underlying IRQ infrastructure allows for it, only allocate
717 * the IRQ, but do not enable it
719 if (!(req->Attributes & IRQ_HANDLE_PRESENT))
720 type |= IRQ_NOAUTOEN;
721 #endif /* IRQ_NOAUTOEN */
723 if (s->irq.AssignedIRQ != 0) {
724 /* If the interrupt is already assigned, it must be the same */
725 irq = s->irq.AssignedIRQ;
728 u32 mask = s->irq_mask;
729 void *data = &p_dev->dev.driver; /* something unique to this device */
731 for (try = 0; try < 64; try++) {
734 /* marked as available by driver, and not blocked by userspace? */
735 if (!((mask >> irq) & 1))
738 /* avoid an IRQ which is already used by a PCMCIA card */
739 if ((try < 32) && pcmcia_used_irq[irq])
742 /* register the correct driver, if possible, of check whether
743 * registering a dummy handle works, i.e. if the IRQ isn't
744 * marked as used by the kernel resource management core */
745 ret = request_irq(irq,
746 (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Handler : test_action,
749 (req->Attributes & IRQ_HANDLE_PRESENT) ? req->Instance : data);
751 if (!(req->Attributes & IRQ_HANDLE_PRESENT))
758 /* only assign PCI irq if no IRQ already assigned */
759 if (ret && !s->irq.AssignedIRQ) {
761 dev_printk(KERN_INFO, &s->dev, "no IRQ found\n");
768 if (ret && (req->Attributes & IRQ_HANDLE_PRESENT)) {
769 ret = request_irq(irq, req->Handler, type,
770 p_dev->devname, req->Instance);
772 dev_printk(KERN_INFO, &s->dev,
773 "request_irq() failed\n");
778 /* Make sure the fact the request type was overridden is passed back */
779 if (type == IRQF_SHARED && !(req->Attributes & IRQ_TYPE_DYNAMIC_SHARING)) {
780 req->Attributes |= IRQ_TYPE_DYNAMIC_SHARING;
781 dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: "
782 "request for exclusive IRQ could not be fulfilled.\n");
783 dev_printk(KERN_WARNING, &p_dev->dev, "pcmcia: the driver "
784 "needs updating to supported shared IRQ lines.\n");
786 c->irq.Attributes = req->Attributes;
787 s->irq.AssignedIRQ = req->AssignedIRQ = irq;
790 c->state |= CONFIG_IRQ_REQ;
793 #ifdef CONFIG_PCMCIA_PROBE
794 pcmcia_used_irq[irq]++;
798 } /* pcmcia_request_irq */
799 EXPORT_SYMBOL(pcmcia_request_irq);
802 /** pcmcia_request_window
804 * Request_window() establishes a mapping between card memory space
805 * and system memory space.
807 int pcmcia_request_window(struct pcmcia_device **p_dev, win_req_t *req, window_handle_t *wh)
809 struct pcmcia_socket *s = (*p_dev)->socket;
814 if (!(s->state & SOCKET_PRESENT)) {
815 dev_dbg(&s->dev, "No card present\n");
818 if (req->Attributes & (WIN_PAGED | WIN_SHARED)) {
819 dev_dbg(&s->dev, "bad attribute setting for iomem region\n");
823 /* Window size defaults to smallest available */
825 req->Size = s->map_size;
826 align = (((s->features & SS_CAP_MEM_ALIGN) ||
827 (req->Attributes & WIN_STRICT_ALIGN)) ?
828 req->Size : s->map_size);
829 if (req->Size & (s->map_size-1)) {
830 dev_dbg(&s->dev, "invalid map size\n");
833 if ((req->Base && (s->features & SS_CAP_STATIC_MAP)) ||
834 (req->Base & (align-1))) {
835 dev_dbg(&s->dev, "invalid base address\n");
841 /* Allocate system memory window */
842 for (w = 0; w < MAX_WIN; w++)
843 if (!(s->state & SOCKET_WIN_REQ(w))) break;
845 dev_dbg(&s->dev, "all windows are used already\n");
850 win->magic = WINDOW_MAGIC;
852 win->handle = *p_dev;
855 if (!(s->features & SS_CAP_STATIC_MAP)) {
856 win->ctl.res = pcmcia_find_mem_region(req->Base, req->Size, align,
857 (req->Attributes & WIN_MAP_BELOW_1MB), s);
859 dev_dbg(&s->dev, "allocating mem region failed\n");
863 (*p_dev)->_win |= CLIENT_WIN_REQ(w);
865 /* Configure the socket controller */
868 win->ctl.speed = req->AccessSpeed;
869 if (req->Attributes & WIN_MEMORY_TYPE)
870 win->ctl.flags |= MAP_ATTRIB;
871 if (req->Attributes & WIN_ENABLE)
872 win->ctl.flags |= MAP_ACTIVE;
873 if (req->Attributes & WIN_DATA_WIDTH_16)
874 win->ctl.flags |= MAP_16BIT;
875 if (req->Attributes & WIN_USE_WAIT)
876 win->ctl.flags |= MAP_USE_WAIT;
877 win->ctl.card_start = 0;
878 if (s->ops->set_mem_map(s, &win->ctl) != 0) {
879 dev_dbg(&s->dev, "failed to set memory mapping\n");
882 s->state |= SOCKET_WIN_REQ(w);
884 /* Return window handle */
885 if (s->features & SS_CAP_STATIC_MAP) {
886 req->Base = win->ctl.static_start;
888 req->Base = win->ctl.res->start;
893 } /* pcmcia_request_window */
894 EXPORT_SYMBOL(pcmcia_request_window);
896 void pcmcia_disable_device(struct pcmcia_device *p_dev) {
897 pcmcia_release_configuration(p_dev);
898 pcmcia_release_io(p_dev, &p_dev->io);
899 pcmcia_release_irq(p_dev, &p_dev->irq);
901 pcmcia_release_window(p_dev, p_dev->win);
903 EXPORT_SYMBOL(pcmcia_disable_device);
906 struct pcmcia_cfg_mem {
907 struct pcmcia_device *p_dev;
909 int (*conf_check) (struct pcmcia_device *p_dev,
910 cistpl_cftable_entry_t *cfg,
911 cistpl_cftable_entry_t *dflt,
915 cistpl_cftable_entry_t dflt;
919 * pcmcia_do_loop_config() - internal helper for pcmcia_loop_config()
921 * pcmcia_do_loop_config() is the internal callback for the call from
922 * pcmcia_loop_config() to pccard_loop_tuple(). Data is transferred
923 * by a struct pcmcia_cfg_mem.
925 static int pcmcia_do_loop_config(tuple_t *tuple, cisparse_t *parse, void *priv)
927 cistpl_cftable_entry_t *cfg = &parse->cftable_entry;
928 struct pcmcia_cfg_mem *cfg_mem = priv;
931 cfg_mem->p_dev->conf.ConfigIndex = cfg->index;
932 if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
933 cfg_mem->dflt = *cfg;
935 return cfg_mem->conf_check(cfg_mem->p_dev, cfg, &cfg_mem->dflt,
936 cfg_mem->p_dev->socket->socket.Vcc,
941 * pcmcia_loop_config() - loop over configuration options
942 * @p_dev: the struct pcmcia_device which we need to loop for.
943 * @conf_check: function to call for each configuration option.
944 * It gets passed the struct pcmcia_device, the CIS data
945 * describing the configuration option, and private data
946 * being passed to pcmcia_loop_config()
947 * @priv_data: private data to be passed to the conf_check function.
949 * pcmcia_loop_config() loops over all configuration options, and calls
950 * the driver-specific conf_check() for each one, checking whether
951 * it is a valid one. Returns 0 on success or errorcode otherwise.
953 int pcmcia_loop_config(struct pcmcia_device *p_dev,
954 int (*conf_check) (struct pcmcia_device *p_dev,
955 cistpl_cftable_entry_t *cfg,
956 cistpl_cftable_entry_t *dflt,
961 struct pcmcia_cfg_mem *cfg_mem;
964 cfg_mem = kzalloc(sizeof(struct pcmcia_cfg_mem), GFP_KERNEL);
968 cfg_mem->p_dev = p_dev;
969 cfg_mem->conf_check = conf_check;
970 cfg_mem->priv_data = priv_data;
972 ret = pccard_loop_tuple(p_dev->socket, p_dev->func,
973 CISTPL_CFTABLE_ENTRY, &cfg_mem->parse,
974 cfg_mem, pcmcia_do_loop_config);
979 EXPORT_SYMBOL(pcmcia_loop_config);
982 struct pcmcia_loop_mem {
983 struct pcmcia_device *p_dev;
985 int (*loop_tuple) (struct pcmcia_device *p_dev,
991 * pcmcia_do_loop_tuple() - internal helper for pcmcia_loop_config()
993 * pcmcia_do_loop_tuple() is the internal callback for the call from
994 * pcmcia_loop_tuple() to pccard_loop_tuple(). Data is transferred
995 * by a struct pcmcia_cfg_mem.
997 static int pcmcia_do_loop_tuple(tuple_t *tuple, cisparse_t *parse, void *priv)
999 struct pcmcia_loop_mem *loop = priv;
1001 return loop->loop_tuple(loop->p_dev, tuple, loop->priv_data);
1005 * pcmcia_loop_tuple() - loop over tuples in the CIS
1006 * @p_dev: the struct pcmcia_device which we need to loop for.
1007 * @code: which CIS code shall we look for?
1008 * @priv_data: private data to be passed to the loop_tuple function.
1009 * @loop_tuple: function to call for each CIS entry of type @function. IT
1010 * gets passed the raw tuple and @priv_data.
1012 * pcmcia_loop_tuple() loops over all CIS entries of type @function, and
1013 * calls the @loop_tuple function for each entry. If the call to @loop_tuple
1014 * returns 0, the loop exits. Returns 0 on success or errorcode otherwise.
1016 int pcmcia_loop_tuple(struct pcmcia_device *p_dev, cisdata_t code,
1017 int (*loop_tuple) (struct pcmcia_device *p_dev,
1022 struct pcmcia_loop_mem loop = {
1024 .loop_tuple = loop_tuple,
1025 .priv_data = priv_data};
1027 return pccard_loop_tuple(p_dev->socket, p_dev->func, code, NULL,
1028 &loop, pcmcia_do_loop_tuple);
1030 EXPORT_SYMBOL(pcmcia_loop_tuple);
1033 struct pcmcia_loop_get {
1039 * pcmcia_do_get_tuple() - internal helper for pcmcia_get_tuple()
1041 * pcmcia_do_get_tuple() is the internal callback for the call from
1042 * pcmcia_get_tuple() to pcmcia_loop_tuple(). As we're only interested in
1043 * the first tuple, return 0 unconditionally. Create a memory buffer large
1044 * enough to hold the content of the tuple, and fill it with the tuple data.
1045 * The caller is responsible to free the buffer.
1047 static int pcmcia_do_get_tuple(struct pcmcia_device *p_dev, tuple_t *tuple,
1050 struct pcmcia_loop_get *get = priv;
1052 *get->buf = kzalloc(tuple->TupleDataLen, GFP_KERNEL);
1054 get->len = tuple->TupleDataLen;
1055 memcpy(*get->buf, tuple->TupleData, tuple->TupleDataLen);
1057 dev_dbg(&p_dev->dev, "do_get_tuple: out of memory\n");
1062 * pcmcia_get_tuple() - get first tuple from CIS
1063 * @p_dev: the struct pcmcia_device which we need to loop for.
1064 * @code: which CIS code shall we look for?
1065 * @buf: pointer to store the buffer to.
1067 * pcmcia_get_tuple() gets the content of the first CIS entry of type @code.
1068 * It returns the buffer length (or zero). The caller is responsible to free
1069 * the buffer passed in @buf.
1071 size_t pcmcia_get_tuple(struct pcmcia_device *p_dev, cisdata_t code,
1072 unsigned char **buf)
1074 struct pcmcia_loop_get get = {
1080 pcmcia_loop_tuple(p_dev, code, pcmcia_do_get_tuple, &get);
1084 EXPORT_SYMBOL(pcmcia_get_tuple);
1088 * pcmcia_do_get_mac() - internal helper for pcmcia_get_mac_from_cis()
1090 * pcmcia_do_get_mac() is the internal callback for the call from
1091 * pcmcia_get_mac_from_cis() to pcmcia_loop_tuple(). We check whether the
1092 * tuple contains a proper LAN_NODE_ID of length 6, and copy the data
1093 * to struct net_device->dev_addr[i].
1095 static int pcmcia_do_get_mac(struct pcmcia_device *p_dev, tuple_t *tuple,
1098 struct net_device *dev = priv;
1101 if (tuple->TupleData[0] != CISTPL_FUNCE_LAN_NODE_ID)
1103 if (tuple->TupleDataLen < ETH_ALEN + 2) {
1104 dev_warn(&p_dev->dev, "Invalid CIS tuple length for "
1109 if (tuple->TupleData[1] != ETH_ALEN) {
1110 dev_warn(&p_dev->dev, "Invalid header for LAN_NODE_ID\n");
1113 for (i = 0; i < 6; i++)
1114 dev->dev_addr[i] = tuple->TupleData[i+2];
1119 * pcmcia_get_mac_from_cis() - read out MAC address from CISTPL_FUNCE
1120 * @p_dev: the struct pcmcia_device for which we want the address.
1121 * @dev: a properly prepared struct net_device to store the info to.
1123 * pcmcia_get_mac_from_cis() reads out the hardware MAC address from
1124 * CISTPL_FUNCE and stores it into struct net_device *dev->dev_addr which
1125 * must be set up properly by the driver (see examples!).
1127 int pcmcia_get_mac_from_cis(struct pcmcia_device *p_dev, struct net_device *dev)
1129 return pcmcia_loop_tuple(p_dev, CISTPL_FUNCE, pcmcia_do_get_mac, dev);
1131 EXPORT_SYMBOL(pcmcia_get_mac_from_cis);