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 int pcmcia_map_mem_page(struct pcmcia_device
*p_dev
, window_handle_t wh
,
191 struct pcmcia_socket
*s
= p_dev
->socket
;
196 if (req
->Page
!= 0) {
197 dev_dbg(&s
->dev
, "failure: requested page is zero\n");
200 s
->win
[wh
].card_start
= req
->CardOffset
;
201 if (s
->ops
->set_mem_map(s
, &s
->win
[wh
]) != 0) {
202 dev_dbg(&s
->dev
, "failed to set_mem_map\n");
206 } /* pcmcia_map_mem_page */
207 EXPORT_SYMBOL(pcmcia_map_mem_page
);
210 /** pcmcia_modify_configuration
212 * Modify a locked socket configuration
214 int pcmcia_modify_configuration(struct pcmcia_device
*p_dev
,
217 struct pcmcia_socket
*s
;
221 c
= p_dev
->function_config
;
223 if (!(s
->state
& SOCKET_PRESENT
)) {
224 dev_dbg(&s
->dev
, "No card present\n");
227 if (!(c
->state
& CONFIG_LOCKED
)) {
228 dev_dbg(&s
->dev
, "Configuration isnt't locked\n");
232 if (mod
->Attributes
& CONF_IRQ_CHANGE_VALID
) {
233 if (mod
->Attributes
& CONF_ENABLE_IRQ
) {
234 c
->Attributes
|= CONF_ENABLE_IRQ
;
235 s
->socket
.io_irq
= s
->irq
.AssignedIRQ
;
237 c
->Attributes
&= ~CONF_ENABLE_IRQ
;
238 s
->socket
.io_irq
= 0;
240 s
->ops
->set_socket(s
, &s
->socket
);
243 if (mod
->Attributes
& CONF_VCC_CHANGE_VALID
) {
244 dev_dbg(&s
->dev
, "changing Vcc is not allowed at this time\n");
248 /* We only allow changing Vpp1 and Vpp2 to the same value */
249 if ((mod
->Attributes
& CONF_VPP1_CHANGE_VALID
) &&
250 (mod
->Attributes
& CONF_VPP2_CHANGE_VALID
)) {
251 if (mod
->Vpp1
!= mod
->Vpp2
) {
252 dev_dbg(&s
->dev
, "Vpp1 and Vpp2 must be the same\n");
255 s
->socket
.Vpp
= mod
->Vpp1
;
256 if (s
->ops
->set_socket(s
, &s
->socket
)) {
257 dev_printk(KERN_WARNING
, &s
->dev
,
258 "Unable to set VPP\n");
261 } else if ((mod
->Attributes
& CONF_VPP1_CHANGE_VALID
) ||
262 (mod
->Attributes
& CONF_VPP2_CHANGE_VALID
)) {
263 dev_dbg(&s
->dev
, "changing Vcc is not allowed at this time\n");
267 if (mod
->Attributes
& CONF_IO_CHANGE_WIDTH
) {
268 pccard_io_map io_off
= { 0, 0, 0, 0, 1 };
272 io_on
.speed
= io_speed
;
273 for (i
= 0; i
< MAX_IO_WIN
; i
++) {
279 io_on
.flags
= MAP_ACTIVE
| IO_DATA_PATH_WIDTH_8
;
280 io_on
.start
= s
->io
[i
].res
->start
;
281 io_on
.stop
= s
->io
[i
].res
->end
;
283 s
->ops
->set_io_map(s
, &io_off
);
285 s
->ops
->set_io_map(s
, &io_on
);
290 } /* modify_configuration */
291 EXPORT_SYMBOL(pcmcia_modify_configuration
);
294 int pcmcia_release_configuration(struct pcmcia_device
*p_dev
)
296 pccard_io_map io
= { 0, 0, 0, 0, 1 };
297 struct pcmcia_socket
*s
= p_dev
->socket
;
298 config_t
*c
= p_dev
->function_config
;
301 if (p_dev
->_locked
) {
303 if (--(s
->lock_count
) == 0) {
304 s
->socket
.flags
= SS_OUTPUT_ENA
; /* Is this correct? */
306 s
->socket
.io_irq
= 0;
307 s
->ops
->set_socket(s
, &s
->socket
);
310 if (c
->state
& CONFIG_LOCKED
) {
311 c
->state
&= ~CONFIG_LOCKED
;
312 if (c
->state
& CONFIG_IO_REQ
)
313 for (i
= 0; i
< MAX_IO_WIN
; i
++) {
317 if (s
->io
[i
].Config
!= 0)
320 s
->ops
->set_io_map(s
, &io
);
325 } /* pcmcia_release_configuration */
328 /** pcmcia_release_io
330 * Release_io() releases the I/O ranges allocated by a client. This
331 * may be invoked some time after a card ejection has already dumped
332 * the actual socket configuration, so if the client is "stale", we
333 * don't bother checking the port ranges against the current socket
336 static int pcmcia_release_io(struct pcmcia_device
*p_dev
, io_req_t
*req
)
338 struct pcmcia_socket
*s
= p_dev
->socket
;
339 config_t
*c
= p_dev
->function_config
;
346 if ((c
->io
.BasePort1
!= req
->BasePort1
) ||
347 (c
->io
.NumPorts1
!= req
->NumPorts1
) ||
348 (c
->io
.BasePort2
!= req
->BasePort2
) ||
349 (c
->io
.NumPorts2
!= req
->NumPorts2
))
352 c
->state
&= ~CONFIG_IO_REQ
;
354 release_io_space(s
, req
->BasePort1
, req
->NumPorts1
);
356 release_io_space(s
, req
->BasePort2
, req
->NumPorts2
);
359 } /* pcmcia_release_io */
362 static int pcmcia_release_irq(struct pcmcia_device
*p_dev
, irq_req_t
*req
)
364 struct pcmcia_socket
*s
= p_dev
->socket
;
365 config_t
*c
= p_dev
->function_config
;
371 if (c
->state
& CONFIG_LOCKED
)
373 if (c
->irq
.Attributes
!= req
->Attributes
) {
374 dev_dbg(&s
->dev
, "IRQ attributes must match assigned ones\n");
377 if (s
->irq
.AssignedIRQ
!= req
->AssignedIRQ
) {
378 dev_dbg(&s
->dev
, "IRQ must match assigned one\n");
381 if (--s
->irq
.Config
== 0) {
382 c
->state
&= ~CONFIG_IRQ_REQ
;
383 s
->irq
.AssignedIRQ
= 0;
386 if (req
->Attributes
& IRQ_HANDLE_PRESENT
) {
387 free_irq(req
->AssignedIRQ
, req
->Instance
);
390 #ifdef CONFIG_PCMCIA_PROBE
391 pcmcia_used_irq
[req
->AssignedIRQ
]--;
395 } /* pcmcia_release_irq */
398 int pcmcia_release_window(struct pcmcia_device
*p_dev
, window_handle_t wh
)
400 struct pcmcia_socket
*s
= p_dev
->socket
;
409 if (!(p_dev
->_win
& CLIENT_WIN_REQ(wh
))) {
410 dev_dbg(&s
->dev
, "not releasing unknown window\n");
414 /* Shut down memory window */
415 win
->flags
&= ~MAP_ACTIVE
;
416 s
->ops
->set_mem_map(s
, win
);
417 s
->state
&= ~SOCKET_WIN_REQ(wh
);
419 /* Release system memory */
421 release_resource(win
->res
);
425 p_dev
->_win
&= ~CLIENT_WIN_REQ(wh
);
428 } /* pcmcia_release_window */
429 EXPORT_SYMBOL(pcmcia_release_window
);
432 int pcmcia_request_configuration(struct pcmcia_device
*p_dev
,
437 struct pcmcia_socket
*s
= p_dev
->socket
;
441 if (!(s
->state
& SOCKET_PRESENT
))
444 if (req
->IntType
& INT_CARDBUS
) {
445 dev_dbg(&s
->dev
, "IntType may not be INT_CARDBUS\n");
448 c
= p_dev
->function_config
;
449 if (c
->state
& CONFIG_LOCKED
) {
450 dev_dbg(&s
->dev
, "Configuration is locked\n");
454 /* Do power control. We don't allow changes in Vcc. */
455 s
->socket
.Vpp
= req
->Vpp
;
456 if (s
->ops
->set_socket(s
, &s
->socket
)) {
457 dev_printk(KERN_WARNING
, &s
->dev
,
458 "Unable to set socket state\n");
462 /* Pick memory or I/O card, DMA mode, interrupt */
463 c
->IntType
= req
->IntType
;
464 c
->Attributes
= req
->Attributes
;
465 if (req
->IntType
& INT_MEMORY_AND_IO
)
466 s
->socket
.flags
|= SS_IOCARD
;
467 if (req
->IntType
& INT_ZOOMED_VIDEO
)
468 s
->socket
.flags
|= SS_ZVCARD
| SS_IOCARD
;
469 if (req
->Attributes
& CONF_ENABLE_DMA
)
470 s
->socket
.flags
|= SS_DMA_MODE
;
471 if (req
->Attributes
& CONF_ENABLE_SPKR
)
472 s
->socket
.flags
|= SS_SPKR_ENA
;
473 if (req
->Attributes
& CONF_ENABLE_IRQ
)
474 s
->socket
.io_irq
= s
->irq
.AssignedIRQ
;
476 s
->socket
.io_irq
= 0;
477 s
->ops
->set_socket(s
, &s
->socket
);
480 /* Set up CIS configuration registers */
481 base
= c
->ConfigBase
= req
->ConfigBase
;
482 c
->CardValues
= req
->Present
;
483 if (req
->Present
& PRESENT_COPY
) {
485 pcmcia_write_cis_mem(s
, 1, (base
+ CISREG_SCR
)>>1, 1, &c
->Copy
);
487 if (req
->Present
& PRESENT_OPTION
) {
488 if (s
->functions
== 1) {
489 c
->Option
= req
->ConfigIndex
& COR_CONFIG_MASK
;
491 c
->Option
= req
->ConfigIndex
& COR_MFC_CONFIG_MASK
;
492 c
->Option
|= COR_FUNC_ENA
|COR_IREQ_ENA
;
493 if (req
->Present
& PRESENT_IOBASE_0
)
494 c
->Option
|= COR_ADDR_DECODE
;
496 if (c
->state
& CONFIG_IRQ_REQ
)
497 if (!(c
->irq
.Attributes
& IRQ_FORCED_PULSE
))
498 c
->Option
|= COR_LEVEL_REQ
;
499 pcmcia_write_cis_mem(s
, 1, (base
+ CISREG_COR
)>>1, 1, &c
->Option
);
502 if (req
->Present
& PRESENT_STATUS
) {
503 c
->Status
= req
->Status
;
504 pcmcia_write_cis_mem(s
, 1, (base
+ CISREG_CCSR
)>>1, 1, &c
->Status
);
506 if (req
->Present
& PRESENT_PIN_REPLACE
) {
508 pcmcia_write_cis_mem(s
, 1, (base
+ CISREG_PRR
)>>1, 1, &c
->Pin
);
510 if (req
->Present
& PRESENT_EXT_STATUS
) {
511 c
->ExtStatus
= req
->ExtStatus
;
512 pcmcia_write_cis_mem(s
, 1, (base
+ CISREG_ESR
)>>1, 1, &c
->ExtStatus
);
514 if (req
->Present
& PRESENT_IOBASE_0
) {
515 u_char b
= c
->io
.BasePort1
& 0xff;
516 pcmcia_write_cis_mem(s
, 1, (base
+ CISREG_IOBASE_0
)>>1, 1, &b
);
517 b
= (c
->io
.BasePort1
>> 8) & 0xff;
518 pcmcia_write_cis_mem(s
, 1, (base
+ CISREG_IOBASE_1
)>>1, 1, &b
);
520 if (req
->Present
& PRESENT_IOSIZE
) {
521 u_char b
= c
->io
.NumPorts1
+ c
->io
.NumPorts2
- 1;
522 pcmcia_write_cis_mem(s
, 1, (base
+ CISREG_IOSIZE
)>>1, 1, &b
);
525 /* Configure I/O windows */
526 if (c
->state
& CONFIG_IO_REQ
) {
527 iomap
.speed
= io_speed
;
528 for (i
= 0; i
< MAX_IO_WIN
; i
++)
531 iomap
.flags
= MAP_ACTIVE
;
532 switch (s
->io
[i
].res
->flags
& IO_DATA_PATH_WIDTH
) {
533 case IO_DATA_PATH_WIDTH_16
:
534 iomap
.flags
|= MAP_16BIT
; break;
535 case IO_DATA_PATH_WIDTH_AUTO
:
536 iomap
.flags
|= MAP_AUTOSZ
; break;
540 iomap
.start
= s
->io
[i
].res
->start
;
541 iomap
.stop
= s
->io
[i
].res
->end
;
542 s
->ops
->set_io_map(s
, &iomap
);
547 c
->state
|= CONFIG_LOCKED
;
550 } /* pcmcia_request_configuration */
551 EXPORT_SYMBOL(pcmcia_request_configuration
);
554 /** pcmcia_request_io
556 * Request_io() reserves ranges of port addresses for a socket.
557 * I have not implemented range sharing or alias addressing.
559 int pcmcia_request_io(struct pcmcia_device
*p_dev
, io_req_t
*req
)
561 struct pcmcia_socket
*s
= p_dev
->socket
;
564 if (!(s
->state
& SOCKET_PRESENT
)) {
565 dev_dbg(&s
->dev
, "No card present\n");
571 c
= p_dev
->function_config
;
572 if (c
->state
& CONFIG_LOCKED
) {
573 dev_dbg(&s
->dev
, "Configuration is locked\n");
576 if (c
->state
& CONFIG_IO_REQ
) {
577 dev_dbg(&s
->dev
, "IO already configured\n");
580 if (req
->Attributes1
& (IO_SHARED
| IO_FORCE_ALIAS_ACCESS
)) {
581 dev_dbg(&s
->dev
, "bad attribute setting for IO region 1\n");
584 if ((req
->NumPorts2
> 0) &&
585 (req
->Attributes2
& (IO_SHARED
| IO_FORCE_ALIAS_ACCESS
))) {
586 dev_dbg(&s
->dev
, "bad attribute setting for IO region 2\n");
590 dev_dbg(&s
->dev
, "trying to allocate resource 1\n");
591 if (alloc_io_space(s
, req
->Attributes1
, &req
->BasePort1
,
592 req
->NumPorts1
, req
->IOAddrLines
)) {
593 dev_dbg(&s
->dev
, "allocation of resource 1 failed\n");
597 if (req
->NumPorts2
) {
598 dev_dbg(&s
->dev
, "trying to allocate resource 2\n");
599 if (alloc_io_space(s
, req
->Attributes2
, &req
->BasePort2
,
600 req
->NumPorts2
, req
->IOAddrLines
)) {
601 dev_dbg(&s
->dev
, "allocation of resource 2 failed\n");
602 release_io_space(s
, req
->BasePort1
, req
->NumPorts1
);
608 c
->state
|= CONFIG_IO_REQ
;
611 } /* pcmcia_request_io */
612 EXPORT_SYMBOL(pcmcia_request_io
);
615 /** pcmcia_request_irq
617 * Request_irq() reserves an irq for this client.
619 * Also, since Linux only reserves irq's when they are actually
620 * hooked, we don't guarantee that an irq will still be available
621 * when the configuration is locked. Now that I think about it,
622 * there might be a way to fix this using a dummy handler.
625 #ifdef CONFIG_PCMCIA_PROBE
626 static irqreturn_t
test_action(int cpl
, void *dev_id
)
632 int pcmcia_request_irq(struct pcmcia_device
*p_dev
, irq_req_t
*req
)
634 struct pcmcia_socket
*s
= p_dev
->socket
;
636 int ret
= -EINVAL
, irq
= 0;
639 if (!(s
->state
& SOCKET_PRESENT
)) {
640 dev_dbg(&s
->dev
, "No card present\n");
643 c
= p_dev
->function_config
;
644 if (c
->state
& CONFIG_LOCKED
) {
645 dev_dbg(&s
->dev
, "Configuration is locked\n");
648 if (c
->state
& CONFIG_IRQ_REQ
) {
649 dev_dbg(&s
->dev
, "IRQ already configured\n");
653 /* Decide what type of interrupt we are registering */
655 if (s
->functions
> 1) /* All of this ought to be handled higher up */
657 else if (req
->Attributes
& IRQ_TYPE_DYNAMIC_SHARING
)
659 else printk(KERN_WARNING
"pcmcia: Driver needs updating to support IRQ sharing.\n");
661 #ifdef CONFIG_PCMCIA_PROBE
664 /* if the underlying IRQ infrastructure allows for it, only allocate
665 * the IRQ, but do not enable it
667 if (!(req
->Attributes
& IRQ_HANDLE_PRESENT
))
668 type
|= IRQ_NOAUTOEN
;
669 #endif /* IRQ_NOAUTOEN */
671 if (s
->irq
.AssignedIRQ
!= 0) {
672 /* If the interrupt is already assigned, it must be the same */
673 irq
= s
->irq
.AssignedIRQ
;
676 u32 mask
= s
->irq_mask
;
677 void *data
= &p_dev
->dev
.driver
; /* something unique to this device */
679 for (try = 0; try < 64; try++) {
682 /* marked as available by driver, and not blocked by userspace? */
683 if (!((mask
>> irq
) & 1))
686 /* avoid an IRQ which is already used by a PCMCIA card */
687 if ((try < 32) && pcmcia_used_irq
[irq
])
690 /* register the correct driver, if possible, of check whether
691 * registering a dummy handle works, i.e. if the IRQ isn't
692 * marked as used by the kernel resource management core */
693 ret
= request_irq(irq
,
694 (req
->Attributes
& IRQ_HANDLE_PRESENT
) ? req
->Handler
: test_action
,
697 (req
->Attributes
& IRQ_HANDLE_PRESENT
) ? req
->Instance
: data
);
699 if (!(req
->Attributes
& IRQ_HANDLE_PRESENT
))
706 /* only assign PCI irq if no IRQ already assigned */
707 if (ret
&& !s
->irq
.AssignedIRQ
) {
709 dev_printk(KERN_INFO
, &s
->dev
, "no IRQ found\n");
716 if (ret
&& (req
->Attributes
& IRQ_HANDLE_PRESENT
)) {
717 ret
= request_irq(irq
, req
->Handler
, type
,
718 p_dev
->devname
, req
->Instance
);
720 dev_printk(KERN_INFO
, &s
->dev
,
721 "request_irq() failed\n");
726 /* Make sure the fact the request type was overridden is passed back */
727 if (type
== IRQF_SHARED
&& !(req
->Attributes
& IRQ_TYPE_DYNAMIC_SHARING
)) {
728 req
->Attributes
|= IRQ_TYPE_DYNAMIC_SHARING
;
729 dev_printk(KERN_WARNING
, &p_dev
->dev
, "pcmcia: "
730 "request for exclusive IRQ could not be fulfilled.\n");
731 dev_printk(KERN_WARNING
, &p_dev
->dev
, "pcmcia: the driver "
732 "needs updating to supported shared IRQ lines.\n");
734 c
->irq
.Attributes
= req
->Attributes
;
735 s
->irq
.AssignedIRQ
= req
->AssignedIRQ
= irq
;
738 c
->state
|= CONFIG_IRQ_REQ
;
741 #ifdef CONFIG_PCMCIA_PROBE
742 pcmcia_used_irq
[irq
]++;
746 } /* pcmcia_request_irq */
747 EXPORT_SYMBOL(pcmcia_request_irq
);
750 /** pcmcia_request_window
752 * Request_window() establishes a mapping between card memory space
753 * and system memory space.
755 int pcmcia_request_window(struct pcmcia_device
**p_dev
, win_req_t
*req
, window_handle_t
*wh
)
757 struct pcmcia_socket
*s
= (*p_dev
)->socket
;
762 if (!(s
->state
& SOCKET_PRESENT
)) {
763 dev_dbg(&s
->dev
, "No card present\n");
766 if (req
->Attributes
& (WIN_PAGED
| WIN_SHARED
)) {
767 dev_dbg(&s
->dev
, "bad attribute setting for iomem region\n");
771 /* Window size defaults to smallest available */
773 req
->Size
= s
->map_size
;
774 align
= (((s
->features
& SS_CAP_MEM_ALIGN
) ||
775 (req
->Attributes
& WIN_STRICT_ALIGN
)) ?
776 req
->Size
: s
->map_size
);
777 if (req
->Size
& (s
->map_size
-1)) {
778 dev_dbg(&s
->dev
, "invalid map size\n");
781 if ((req
->Base
&& (s
->features
& SS_CAP_STATIC_MAP
)) ||
782 (req
->Base
& (align
-1))) {
783 dev_dbg(&s
->dev
, "invalid base address\n");
789 /* Allocate system memory window */
790 for (w
= 0; w
< MAX_WIN
; w
++)
791 if (!(s
->state
& SOCKET_WIN_REQ(w
))) break;
793 dev_dbg(&s
->dev
, "all windows are used already\n");
799 if (!(s
->features
& SS_CAP_STATIC_MAP
)) {
800 win
->res
= pcmcia_find_mem_region(req
->Base
, req
->Size
, align
,
801 (req
->Attributes
& WIN_MAP_BELOW_1MB
), s
);
803 dev_dbg(&s
->dev
, "allocating mem region failed\n");
807 (*p_dev
)->_win
|= CLIENT_WIN_REQ(w
);
809 /* Configure the socket controller */
812 win
->speed
= req
->AccessSpeed
;
813 if (req
->Attributes
& WIN_MEMORY_TYPE
)
814 win
->flags
|= MAP_ATTRIB
;
815 if (req
->Attributes
& WIN_ENABLE
)
816 win
->flags
|= MAP_ACTIVE
;
817 if (req
->Attributes
& WIN_DATA_WIDTH_16
)
818 win
->flags
|= MAP_16BIT
;
819 if (req
->Attributes
& WIN_USE_WAIT
)
820 win
->flags
|= MAP_USE_WAIT
;
822 if (s
->ops
->set_mem_map(s
, win
) != 0) {
823 dev_dbg(&s
->dev
, "failed to set memory mapping\n");
826 s
->state
|= SOCKET_WIN_REQ(w
);
828 /* Return window handle */
829 if (s
->features
& SS_CAP_STATIC_MAP
) {
830 req
->Base
= win
->static_start
;
832 req
->Base
= win
->res
->start
;
837 } /* pcmcia_request_window */
838 EXPORT_SYMBOL(pcmcia_request_window
);
840 void pcmcia_disable_device(struct pcmcia_device
*p_dev
) {
841 pcmcia_release_configuration(p_dev
);
842 pcmcia_release_io(p_dev
, &p_dev
->io
);
843 pcmcia_release_irq(p_dev
, &p_dev
->irq
);
845 pcmcia_release_window(p_dev
, p_dev
->win
);
847 EXPORT_SYMBOL(pcmcia_disable_device
);
850 struct pcmcia_cfg_mem
{
851 struct pcmcia_device
*p_dev
;
853 int (*conf_check
) (struct pcmcia_device
*p_dev
,
854 cistpl_cftable_entry_t
*cfg
,
855 cistpl_cftable_entry_t
*dflt
,
859 cistpl_cftable_entry_t dflt
;
863 * pcmcia_do_loop_config() - internal helper for pcmcia_loop_config()
865 * pcmcia_do_loop_config() is the internal callback for the call from
866 * pcmcia_loop_config() to pccard_loop_tuple(). Data is transferred
867 * by a struct pcmcia_cfg_mem.
869 static int pcmcia_do_loop_config(tuple_t
*tuple
, cisparse_t
*parse
, void *priv
)
871 cistpl_cftable_entry_t
*cfg
= &parse
->cftable_entry
;
872 struct pcmcia_cfg_mem
*cfg_mem
= priv
;
875 cfg_mem
->p_dev
->conf
.ConfigIndex
= cfg
->index
;
876 if (cfg
->flags
& CISTPL_CFTABLE_DEFAULT
)
877 cfg_mem
->dflt
= *cfg
;
879 return cfg_mem
->conf_check(cfg_mem
->p_dev
, cfg
, &cfg_mem
->dflt
,
880 cfg_mem
->p_dev
->socket
->socket
.Vcc
,
885 * pcmcia_loop_config() - loop over configuration options
886 * @p_dev: the struct pcmcia_device which we need to loop for.
887 * @conf_check: function to call for each configuration option.
888 * It gets passed the struct pcmcia_device, the CIS data
889 * describing the configuration option, and private data
890 * being passed to pcmcia_loop_config()
891 * @priv_data: private data to be passed to the conf_check function.
893 * pcmcia_loop_config() loops over all configuration options, and calls
894 * the driver-specific conf_check() for each one, checking whether
895 * it is a valid one. Returns 0 on success or errorcode otherwise.
897 int pcmcia_loop_config(struct pcmcia_device
*p_dev
,
898 int (*conf_check
) (struct pcmcia_device
*p_dev
,
899 cistpl_cftable_entry_t
*cfg
,
900 cistpl_cftable_entry_t
*dflt
,
905 struct pcmcia_cfg_mem
*cfg_mem
;
908 cfg_mem
= kzalloc(sizeof(struct pcmcia_cfg_mem
), GFP_KERNEL
);
912 cfg_mem
->p_dev
= p_dev
;
913 cfg_mem
->conf_check
= conf_check
;
914 cfg_mem
->priv_data
= priv_data
;
916 ret
= pccard_loop_tuple(p_dev
->socket
, p_dev
->func
,
917 CISTPL_CFTABLE_ENTRY
, &cfg_mem
->parse
,
918 cfg_mem
, pcmcia_do_loop_config
);
923 EXPORT_SYMBOL(pcmcia_loop_config
);
926 struct pcmcia_loop_mem
{
927 struct pcmcia_device
*p_dev
;
929 int (*loop_tuple
) (struct pcmcia_device
*p_dev
,
935 * pcmcia_do_loop_tuple() - internal helper for pcmcia_loop_config()
937 * pcmcia_do_loop_tuple() is the internal callback for the call from
938 * pcmcia_loop_tuple() to pccard_loop_tuple(). Data is transferred
939 * by a struct pcmcia_cfg_mem.
941 static int pcmcia_do_loop_tuple(tuple_t
*tuple
, cisparse_t
*parse
, void *priv
)
943 struct pcmcia_loop_mem
*loop
= priv
;
945 return loop
->loop_tuple(loop
->p_dev
, tuple
, loop
->priv_data
);
949 * pcmcia_loop_tuple() - loop over tuples in the CIS
950 * @p_dev: the struct pcmcia_device which we need to loop for.
951 * @code: which CIS code shall we look for?
952 * @priv_data: private data to be passed to the loop_tuple function.
953 * @loop_tuple: function to call for each CIS entry of type @function. IT
954 * gets passed the raw tuple and @priv_data.
956 * pcmcia_loop_tuple() loops over all CIS entries of type @function, and
957 * calls the @loop_tuple function for each entry. If the call to @loop_tuple
958 * returns 0, the loop exits. Returns 0 on success or errorcode otherwise.
960 int pcmcia_loop_tuple(struct pcmcia_device
*p_dev
, cisdata_t code
,
961 int (*loop_tuple
) (struct pcmcia_device
*p_dev
,
966 struct pcmcia_loop_mem loop
= {
968 .loop_tuple
= loop_tuple
,
969 .priv_data
= priv_data
};
971 return pccard_loop_tuple(p_dev
->socket
, p_dev
->func
, code
, NULL
,
972 &loop
, pcmcia_do_loop_tuple
);
974 EXPORT_SYMBOL(pcmcia_loop_tuple
);
977 struct pcmcia_loop_get
{
983 * pcmcia_do_get_tuple() - internal helper for pcmcia_get_tuple()
985 * pcmcia_do_get_tuple() is the internal callback for the call from
986 * pcmcia_get_tuple() to pcmcia_loop_tuple(). As we're only interested in
987 * the first tuple, return 0 unconditionally. Create a memory buffer large
988 * enough to hold the content of the tuple, and fill it with the tuple data.
989 * The caller is responsible to free the buffer.
991 static int pcmcia_do_get_tuple(struct pcmcia_device
*p_dev
, tuple_t
*tuple
,
994 struct pcmcia_loop_get
*get
= priv
;
996 *get
->buf
= kzalloc(tuple
->TupleDataLen
, GFP_KERNEL
);
998 get
->len
= tuple
->TupleDataLen
;
999 memcpy(*get
->buf
, tuple
->TupleData
, tuple
->TupleDataLen
);
1001 dev_dbg(&p_dev
->dev
, "do_get_tuple: out of memory\n");
1006 * pcmcia_get_tuple() - get first tuple from CIS
1007 * @p_dev: the struct pcmcia_device which we need to loop for.
1008 * @code: which CIS code shall we look for?
1009 * @buf: pointer to store the buffer to.
1011 * pcmcia_get_tuple() gets the content of the first CIS entry of type @code.
1012 * It returns the buffer length (or zero). The caller is responsible to free
1013 * the buffer passed in @buf.
1015 size_t pcmcia_get_tuple(struct pcmcia_device
*p_dev
, cisdata_t code
,
1016 unsigned char **buf
)
1018 struct pcmcia_loop_get get
= {
1024 pcmcia_loop_tuple(p_dev
, code
, pcmcia_do_get_tuple
, &get
);
1028 EXPORT_SYMBOL(pcmcia_get_tuple
);
1032 * pcmcia_do_get_mac() - internal helper for pcmcia_get_mac_from_cis()
1034 * pcmcia_do_get_mac() is the internal callback for the call from
1035 * pcmcia_get_mac_from_cis() to pcmcia_loop_tuple(). We check whether the
1036 * tuple contains a proper LAN_NODE_ID of length 6, and copy the data
1037 * to struct net_device->dev_addr[i].
1039 static int pcmcia_do_get_mac(struct pcmcia_device
*p_dev
, tuple_t
*tuple
,
1042 struct net_device
*dev
= priv
;
1045 if (tuple
->TupleData
[0] != CISTPL_FUNCE_LAN_NODE_ID
)
1047 if (tuple
->TupleDataLen
< ETH_ALEN
+ 2) {
1048 dev_warn(&p_dev
->dev
, "Invalid CIS tuple length for "
1053 if (tuple
->TupleData
[1] != ETH_ALEN
) {
1054 dev_warn(&p_dev
->dev
, "Invalid header for LAN_NODE_ID\n");
1057 for (i
= 0; i
< 6; i
++)
1058 dev
->dev_addr
[i
] = tuple
->TupleData
[i
+2];
1063 * pcmcia_get_mac_from_cis() - read out MAC address from CISTPL_FUNCE
1064 * @p_dev: the struct pcmcia_device for which we want the address.
1065 * @dev: a properly prepared struct net_device to store the info to.
1067 * pcmcia_get_mac_from_cis() reads out the hardware MAC address from
1068 * CISTPL_FUNCE and stores it into struct net_device *dev->dev_addr which
1069 * must be set up properly by the driver (see examples!).
1071 int pcmcia_get_mac_from_cis(struct pcmcia_device
*p_dev
, struct net_device
*dev
)
1073 return pcmcia_loop_tuple(p_dev
, CISTPL_FUNCE
, pcmcia_do_get_mac
, dev
);
1075 EXPORT_SYMBOL(pcmcia_get_mac_from_cis
);