3 Driver for the Marvell 8385 based compact flash WLAN cards.
5 (C) 2007 by Holger Schurig <hs4233@mail.mn-solutions.de>
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
20 Boston, MA 02110-1301, USA.
24 #include <linux/module.h>
25 #include <linux/slab.h>
26 #include <linux/delay.h>
27 #include <linux/moduleparam.h>
28 #include <linux/firmware.h>
29 #include <linux/netdevice.h>
31 #include <pcmcia/cistpl.h>
32 #include <pcmcia/ds.h>
36 #define DRV_NAME "libertas_cs"
43 /********************************************************************/
45 /********************************************************************/
47 MODULE_AUTHOR("Holger Schurig <hs4233@mail.mn-solutions.de>");
48 MODULE_DESCRIPTION("Driver for Marvell 83xx compact flash WLAN cards");
49 MODULE_LICENSE("GPL");
50 MODULE_FIRMWARE("libertas_cs_helper.fw");
54 /********************************************************************/
56 /********************************************************************/
59 struct pcmcia_device
*p_dev
;
60 struct lbs_private
*priv
;
67 /********************************************************************/
69 /********************************************************************/
71 /* This define enables wrapper functions which allow you
72 to dump all register accesses. You normally won't this,
73 except for development */
74 /* #define DEBUG_IO */
77 static int debug_output
= 0;
79 /* This way the compiler optimizes the printk's away */
80 #define debug_output 0
83 static inline unsigned int if_cs_read8(struct if_cs_card
*card
, uint reg
)
85 unsigned int val
= ioread8(card
->iobase
+ reg
);
87 printk(KERN_INFO
"inb %08x<%02x\n", reg
, val
);
90 static inline unsigned int if_cs_read16(struct if_cs_card
*card
, uint reg
)
92 unsigned int val
= ioread16(card
->iobase
+ reg
);
94 printk(KERN_INFO
"inw %08x<%04x\n", reg
, val
);
97 static inline void if_cs_read16_rep(
98 struct if_cs_card
*card
,
104 printk(KERN_INFO
"insw %08x<(0x%lx words)\n",
106 ioread16_rep(card
->iobase
+ reg
, buf
, count
);
109 static inline void if_cs_write8(struct if_cs_card
*card
, uint reg
, u8 val
)
112 printk(KERN_INFO
"outb %08x>%02x\n", reg
, val
);
113 iowrite8(val
, card
->iobase
+ reg
);
116 static inline void if_cs_write16(struct if_cs_card
*card
, uint reg
, u16 val
)
119 printk(KERN_INFO
"outw %08x>%04x\n", reg
, val
);
120 iowrite16(val
, card
->iobase
+ reg
);
123 static inline void if_cs_write16_rep(
124 struct if_cs_card
*card
,
130 printk(KERN_INFO
"outsw %08x>(0x%lx words)\n",
132 iowrite16_rep(card
->iobase
+ reg
, buf
, count
);
137 * I know that polling/delaying is frowned upon. However, this procedure
138 * with polling is needed while downloading the firmware. At this stage,
139 * the hardware does unfortunately not create any interrupts.
141 * Fortunately, this function is never used once the firmware is in
144 * As a reference, see the "Firmware Specification v5.1", page 18
145 * and 19. I did not follow their suggested timing to the word,
146 * but this works nice & fast anyway.
148 static int if_cs_poll_while_fw_download(struct if_cs_card
*card
, uint addr
, u8 reg
)
152 for (i
= 0; i
< 100000; i
++) {
153 u8 val
= if_cs_read8(card
, addr
);
164 * First the bitmasks for the host/card interrupt/status registers:
166 #define IF_CS_BIT_TX 0x0001
167 #define IF_CS_BIT_RX 0x0002
168 #define IF_CS_BIT_COMMAND 0x0004
169 #define IF_CS_BIT_RESP 0x0008
170 #define IF_CS_BIT_EVENT 0x0010
171 #define IF_CS_BIT_MASK 0x001f
176 * It's not really clear to me what the host status register is for. It
177 * needs to be set almost in union with "host int cause". The following
178 * bits from above are used:
180 * IF_CS_BIT_TX driver downloaded a data packet
181 * IF_CS_BIT_RX driver got a data packet
182 * IF_CS_BIT_COMMAND driver downloaded a command
183 * IF_CS_BIT_RESP not used (has some meaning with powerdown)
184 * IF_CS_BIT_EVENT driver read a host event
186 #define IF_CS_HOST_STATUS 0x00000000
189 * With the host int cause register can the host (that is, Linux) cause
190 * an interrupt in the firmware, to tell the firmware about those events:
192 * IF_CS_BIT_TX a data packet has been downloaded
193 * IF_CS_BIT_RX a received data packet has retrieved
194 * IF_CS_BIT_COMMAND a firmware block or a command has been downloaded
195 * IF_CS_BIT_RESP not used (has some meaning with powerdown)
196 * IF_CS_BIT_EVENT a host event (link lost etc) has been retrieved
198 #define IF_CS_HOST_INT_CAUSE 0x00000002
201 * The host int mask register is used to enable/disable interrupt. However,
202 * I have the suspicion that disabled interrupts are lost.
204 #define IF_CS_HOST_INT_MASK 0x00000004
207 * Used to send or receive data packets:
209 #define IF_CS_WRITE 0x00000016
210 #define IF_CS_WRITE_LEN 0x00000014
211 #define IF_CS_READ 0x00000010
212 #define IF_CS_READ_LEN 0x00000024
215 * Used to send commands (and to send firmware block) and to
216 * receive command responses:
218 #define IF_CS_CMD 0x0000001A
219 #define IF_CS_CMD_LEN 0x00000018
220 #define IF_CS_RESP 0x00000012
221 #define IF_CS_RESP_LEN 0x00000030
224 * The card status registers shows what the card/firmware actually
227 * IF_CS_BIT_TX you may send a data packet
228 * IF_CS_BIT_RX you may retrieve a data packet
229 * IF_CS_BIT_COMMAND you may send a command
230 * IF_CS_BIT_RESP you may retrieve a command response
231 * IF_CS_BIT_EVENT the card has a event for use (link lost, snr low etc)
233 * When reading this register several times, you will get back the same
234 * results --- with one exception: the IF_CS_BIT_EVENT clear itself
237 * Not that we don't rely on BIT_RX,_BIT_RESP or BIT_EVENT because
238 * we handle this via the card int cause register.
240 #define IF_CS_CARD_STATUS 0x00000020
241 #define IF_CS_CARD_STATUS_MASK 0x7f00
244 * The card int cause register is used by the card/firmware to notify us
245 * about the following events:
247 * IF_CS_BIT_TX a data packet has successfully been sentx
248 * IF_CS_BIT_RX a data packet has been received and can be retrieved
249 * IF_CS_BIT_COMMAND not used
250 * IF_CS_BIT_RESP the firmware has a command response for us
251 * IF_CS_BIT_EVENT the card has a event for use (link lost, snr low etc)
253 #define IF_CS_CARD_INT_CAUSE 0x00000022
256 * This is used to for handshaking with the card's bootloader/helper image
257 * to synchronize downloading of firmware blocks.
259 #define IF_CS_SQ_READ_LOW 0x00000028
260 #define IF_CS_SQ_HELPER_OK 0x10
263 * The scratch register tells us ...
265 * IF_CS_SCRATCH_BOOT_OK the bootloader runs
266 * IF_CS_SCRATCH_HELPER_OK the helper firmware already runs
268 #define IF_CS_SCRATCH 0x0000003F
269 #define IF_CS_SCRATCH_BOOT_OK 0x00
270 #define IF_CS_SCRATCH_HELPER_OK 0x5a
273 * Used to detect ancient chips:
275 #define IF_CS_PRODUCT_ID 0x0000001C
276 #define IF_CS_CF8385_B1_REV 0x12
277 #define IF_CS_CF8381_B3_REV 0x04
278 #define IF_CS_CF8305_B1_REV 0x03
281 * Used to detect other cards than CF8385 since their revisions of silicon
282 * doesn't match those from CF8385, eg. CF8381 B3 works with this driver.
284 #define CF8305_MANFID 0x02db
285 #define CF8305_CARDID 0x8103
286 #define CF8381_MANFID 0x02db
287 #define CF8381_CARDID 0x6064
288 #define CF8385_MANFID 0x02df
289 #define CF8385_CARDID 0x8103
291 static inline int if_cs_hw_is_cf8305(struct pcmcia_device
*p_dev
)
293 return (p_dev
->manf_id
== CF8305_MANFID
&&
294 p_dev
->card_id
== CF8305_CARDID
);
297 static inline int if_cs_hw_is_cf8381(struct pcmcia_device
*p_dev
)
299 return (p_dev
->manf_id
== CF8381_MANFID
&&
300 p_dev
->card_id
== CF8381_CARDID
);
303 static inline int if_cs_hw_is_cf8385(struct pcmcia_device
*p_dev
)
305 return (p_dev
->manf_id
== CF8385_MANFID
&&
306 p_dev
->card_id
== CF8385_CARDID
);
309 /********************************************************************/
310 /* I/O and interrupt handling */
311 /********************************************************************/
313 static inline void if_cs_enable_ints(struct if_cs_card
*card
)
315 lbs_deb_enter(LBS_DEB_CS
);
316 if_cs_write16(card
, IF_CS_HOST_INT_MASK
, 0);
319 static inline void if_cs_disable_ints(struct if_cs_card
*card
)
321 lbs_deb_enter(LBS_DEB_CS
);
322 if_cs_write16(card
, IF_CS_HOST_INT_MASK
, IF_CS_BIT_MASK
);
326 * Called from if_cs_host_to_card to send a command to the hardware
328 static int if_cs_send_cmd(struct lbs_private
*priv
, u8
*buf
, u16 nb
)
330 struct if_cs_card
*card
= (struct if_cs_card
*)priv
->card
;
334 lbs_deb_enter(LBS_DEB_CS
);
335 if_cs_disable_ints(card
);
337 /* Is hardware ready? */
339 u16 status
= if_cs_read16(card
, IF_CS_CARD_STATUS
);
340 if (status
& IF_CS_BIT_COMMAND
)
343 lbs_pr_err("card not ready for commands\n");
349 if_cs_write16(card
, IF_CS_CMD_LEN
, nb
);
351 if_cs_write16_rep(card
, IF_CS_CMD
, buf
, nb
/ 2);
352 /* Are we supposed to transfer an odd amount of bytes? */
354 if_cs_write8(card
, IF_CS_CMD
, buf
[nb
-1]);
356 /* "Assert the download over interrupt command in the Host
357 * status register" */
358 if_cs_write16(card
, IF_CS_HOST_STATUS
, IF_CS_BIT_COMMAND
);
360 /* "Assert the download over interrupt command in the Card
361 * interrupt case register" */
362 if_cs_write16(card
, IF_CS_HOST_INT_CAUSE
, IF_CS_BIT_COMMAND
);
366 if_cs_enable_ints(card
);
367 lbs_deb_leave_args(LBS_DEB_CS
, "ret %d", ret
);
372 * Called from if_cs_host_to_card to send a data to the hardware
374 static void if_cs_send_data(struct lbs_private
*priv
, u8
*buf
, u16 nb
)
376 struct if_cs_card
*card
= (struct if_cs_card
*)priv
->card
;
379 lbs_deb_enter(LBS_DEB_CS
);
380 if_cs_disable_ints(card
);
382 status
= if_cs_read16(card
, IF_CS_CARD_STATUS
);
383 BUG_ON((status
& IF_CS_BIT_TX
) == 0);
385 if_cs_write16(card
, IF_CS_WRITE_LEN
, nb
);
387 /* write even number of bytes, then odd byte if necessary */
388 if_cs_write16_rep(card
, IF_CS_WRITE
, buf
, nb
/ 2);
390 if_cs_write8(card
, IF_CS_WRITE
, buf
[nb
-1]);
392 if_cs_write16(card
, IF_CS_HOST_STATUS
, IF_CS_BIT_TX
);
393 if_cs_write16(card
, IF_CS_HOST_INT_CAUSE
, IF_CS_BIT_TX
);
394 if_cs_enable_ints(card
);
396 lbs_deb_leave(LBS_DEB_CS
);
400 * Get the command result out of the card.
402 static int if_cs_receive_cmdres(struct lbs_private
*priv
, u8
*data
, u32
*len
)
408 lbs_deb_enter(LBS_DEB_CS
);
410 /* is hardware ready? */
411 status
= if_cs_read16(priv
->card
, IF_CS_CARD_STATUS
);
412 if ((status
& IF_CS_BIT_RESP
) == 0) {
413 lbs_pr_err("no cmd response in card\n");
418 *len
= if_cs_read16(priv
->card
, IF_CS_RESP_LEN
);
419 if ((*len
== 0) || (*len
> LBS_CMD_BUFFER_SIZE
)) {
420 lbs_pr_err("card cmd buffer has invalid # of bytes (%d)\n", *len
);
424 /* read even number of bytes, then odd byte if necessary */
425 if_cs_read16_rep(priv
->card
, IF_CS_RESP
, data
, *len
/sizeof(u16
));
427 data
[*len
-1] = if_cs_read8(priv
->card
, IF_CS_RESP
);
429 /* This is a workaround for a firmware that reports too much
434 /* Clear this flag again */
435 spin_lock_irqsave(&priv
->driver_lock
, flags
);
436 priv
->dnld_sent
= DNLD_RES_RECEIVED
;
437 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
440 lbs_deb_leave_args(LBS_DEB_CS
, "ret %d, len %d", ret
, *len
);
444 static struct sk_buff
*if_cs_receive_data(struct lbs_private
*priv
)
446 struct sk_buff
*skb
= NULL
;
450 lbs_deb_enter(LBS_DEB_CS
);
452 len
= if_cs_read16(priv
->card
, IF_CS_READ_LEN
);
453 if (len
== 0 || len
> MRVDRV_ETH_RX_PACKET_BUFFER_SIZE
) {
454 lbs_pr_err("card data buffer has invalid # of bytes (%d)\n", len
);
455 priv
->dev
->stats
.rx_dropped
++;
459 skb
= dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE
+ 2);
463 skb_reserve(skb
, 2);/* 16 byte align */
466 /* read even number of bytes, then odd byte if necessary */
467 if_cs_read16_rep(priv
->card
, IF_CS_READ
, data
, len
/sizeof(u16
));
469 data
[len
-1] = if_cs_read8(priv
->card
, IF_CS_READ
);
472 if_cs_write16(priv
->card
, IF_CS_HOST_STATUS
, IF_CS_BIT_RX
);
473 if_cs_write16(priv
->card
, IF_CS_HOST_INT_CAUSE
, IF_CS_BIT_RX
);
476 lbs_deb_leave_args(LBS_DEB_CS
, "ret %p", skb
);
480 static irqreturn_t
if_cs_interrupt(int irq
, void *data
)
482 struct if_cs_card
*card
= data
;
483 struct lbs_private
*priv
= card
->priv
;
486 lbs_deb_enter(LBS_DEB_CS
);
488 /* Ask card interrupt cause register if there is something for us */
489 cause
= if_cs_read16(card
, IF_CS_CARD_INT_CAUSE
);
490 lbs_deb_cs("cause 0x%04x\n", cause
);
497 if (cause
== 0xffff) {
498 /* Read in junk, the card has probably been removed */
499 card
->priv
->surpriseremoved
= 1;
503 if (cause
& IF_CS_BIT_RX
) {
505 lbs_deb_cs("rx packet\n");
506 skb
= if_cs_receive_data(priv
);
508 lbs_process_rxed_packet(priv
, skb
);
511 if (cause
& IF_CS_BIT_TX
) {
512 lbs_deb_cs("tx done\n");
513 lbs_host_to_card_done(priv
);
516 if (cause
& IF_CS_BIT_RESP
) {
520 lbs_deb_cs("cmd resp\n");
521 spin_lock_irqsave(&priv
->driver_lock
, flags
);
522 i
= (priv
->resp_idx
== 0) ? 1 : 0;
523 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
525 BUG_ON(priv
->resp_len
[i
]);
526 if_cs_receive_cmdres(priv
, priv
->resp_buf
[i
],
529 spin_lock_irqsave(&priv
->driver_lock
, flags
);
530 lbs_notify_command_response(priv
, i
);
531 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
534 if (cause
& IF_CS_BIT_EVENT
) {
535 u16 status
= if_cs_read16(priv
->card
, IF_CS_CARD_STATUS
);
536 if_cs_write16(priv
->card
, IF_CS_HOST_INT_CAUSE
,
538 lbs_queue_event(priv
, (status
& IF_CS_CARD_STATUS_MASK
) >> 8);
541 /* Clear interrupt cause */
542 if_cs_write16(card
, IF_CS_CARD_INT_CAUSE
, cause
& IF_CS_BIT_MASK
);
544 lbs_deb_leave(LBS_DEB_CS
);
551 /********************************************************************/
553 /********************************************************************/
556 * Tries to program the helper firmware.
558 * Return 0 on success
560 static int if_cs_prog_helper(struct if_cs_card
*card
)
565 const struct firmware
*fw
;
567 lbs_deb_enter(LBS_DEB_CS
);
570 * This is the only place where an unaligned register access happens on
571 * the CF8305 card, therefore for the sake of speed of the driver, we do
572 * the alignment correction here.
574 if (card
->align_regs
)
575 scratch
= if_cs_read16(card
, IF_CS_SCRATCH
) >> 8;
577 scratch
= if_cs_read8(card
, IF_CS_SCRATCH
);
579 /* "If the value is 0x5a, the firmware is already
580 * downloaded successfully"
582 if (scratch
== IF_CS_SCRATCH_HELPER_OK
)
585 /* "If the value is != 00, it is invalid value of register */
586 if (scratch
!= IF_CS_SCRATCH_BOOT_OK
) {
591 /* TODO: make firmware file configurable */
592 ret
= request_firmware(&fw
, "libertas_cs_helper.fw",
595 lbs_pr_err("can't load helper firmware\n");
599 lbs_deb_cs("helper size %td\n", fw
->size
);
601 /* "Set the 5 bytes of the helper image to 0" */
602 /* Not needed, this contains an ARM branch instruction */
605 /* "the number of bytes to send is 256" */
607 int remain
= fw
->size
- sent
;
612 /* "write the number of bytes to be sent to the I/O Command
613 * write length register" */
614 if_cs_write16(card
, IF_CS_CMD_LEN
, count
);
616 /* "write this to I/O Command port register as 16 bit writes */
618 if_cs_write16_rep(card
, IF_CS_CMD
,
622 /* "Assert the download over interrupt command in the Host
623 * status register" */
624 if_cs_write8(card
, IF_CS_HOST_STATUS
, IF_CS_BIT_COMMAND
);
626 /* "Assert the download over interrupt command in the Card
627 * interrupt case register" */
628 if_cs_write16(card
, IF_CS_HOST_INT_CAUSE
, IF_CS_BIT_COMMAND
);
630 /* "The host polls the Card Status register ... for 50 ms before
631 declaring a failure */
632 ret
= if_cs_poll_while_fw_download(card
, IF_CS_CARD_STATUS
,
635 lbs_pr_err("can't download helper at 0x%x, ret %d\n",
647 release_firmware(fw
);
649 lbs_deb_leave_args(LBS_DEB_CS
, "ret %d", ret
);
654 static int if_cs_prog_real(struct if_cs_card
*card
)
656 const struct firmware
*fw
;
662 lbs_deb_enter(LBS_DEB_CS
);
664 /* TODO: make firmware file configurable */
665 ret
= request_firmware(&fw
, "libertas_cs.fw",
668 lbs_pr_err("can't load firmware\n");
672 lbs_deb_cs("fw size %td\n", fw
->size
);
674 ret
= if_cs_poll_while_fw_download(card
, IF_CS_SQ_READ_LOW
,
677 lbs_pr_err("helper firmware doesn't answer\n");
681 for (sent
= 0; sent
< fw
->size
; sent
+= len
) {
682 len
= if_cs_read16(card
, IF_CS_SQ_READ_LOW
);
685 lbs_pr_info("odd, need to retry this firmware block\n");
691 lbs_pr_err("could not download firmware\n");
700 if_cs_write16(card
, IF_CS_CMD_LEN
, len
);
702 if_cs_write16_rep(card
, IF_CS_CMD
,
705 if_cs_write8(card
, IF_CS_HOST_STATUS
, IF_CS_BIT_COMMAND
);
706 if_cs_write16(card
, IF_CS_HOST_INT_CAUSE
, IF_CS_BIT_COMMAND
);
708 ret
= if_cs_poll_while_fw_download(card
, IF_CS_CARD_STATUS
,
711 lbs_pr_err("can't download firmware at 0x%x\n", sent
);
716 ret
= if_cs_poll_while_fw_download(card
, IF_CS_SCRATCH
, 0x5a);
718 lbs_pr_err("firmware download failed\n");
721 release_firmware(fw
);
724 lbs_deb_leave_args(LBS_DEB_CS
, "ret %d", ret
);
730 /********************************************************************/
731 /* Callback functions for libertas.ko */
732 /********************************************************************/
734 /* Send commands or data packets to the card */
735 static int if_cs_host_to_card(struct lbs_private
*priv
,
742 lbs_deb_enter_args(LBS_DEB_CS
, "type %d, bytes %d", type
, nb
);
746 priv
->dnld_sent
= DNLD_DATA_SENT
;
747 if_cs_send_data(priv
, buf
, nb
);
751 priv
->dnld_sent
= DNLD_CMD_SENT
;
752 ret
= if_cs_send_cmd(priv
, buf
, nb
);
755 lbs_pr_err("%s: unsupported type %d\n", __func__
, type
);
758 lbs_deb_leave_args(LBS_DEB_CS
, "ret %d", ret
);
763 /********************************************************************/
765 /********************************************************************/
768 * After a card is removed, if_cs_release() will unregister the
769 * device, and release the PCMCIA configuration. If the device is
770 * still open, this will be postponed until it is closed.
772 static void if_cs_release(struct pcmcia_device
*p_dev
)
774 struct if_cs_card
*card
= p_dev
->priv
;
776 lbs_deb_enter(LBS_DEB_CS
);
778 free_irq(p_dev
->irq
, card
);
779 pcmcia_disable_device(p_dev
);
781 ioport_unmap(card
->iobase
);
783 lbs_deb_leave(LBS_DEB_CS
);
788 * This creates an "instance" of the driver, allocating local data
789 * structures for one device. The device is registered with Card
792 * The dev_link structure is initialized, but we don't actually
793 * configure the card at this point -- we wait until we receive a card
797 static int if_cs_ioprobe(struct pcmcia_device
*p_dev
, void *priv_data
)
799 p_dev
->resource
[0]->flags
&= ~IO_DATA_PATH_WIDTH
;
800 p_dev
->resource
[0]->flags
|= IO_DATA_PATH_WIDTH_AUTO
;
802 if (p_dev
->resource
[1]->end
) {
803 lbs_pr_err("wrong CIS (check number of IO windows)\n");
807 /* This reserves IO space but doesn't actually enable it */
808 return pcmcia_request_io(p_dev
);
811 static int if_cs_probe(struct pcmcia_device
*p_dev
)
814 unsigned int prod_id
;
815 struct lbs_private
*priv
;
816 struct if_cs_card
*card
;
818 lbs_deb_enter(LBS_DEB_CS
);
820 card
= kzalloc(sizeof(struct if_cs_card
), GFP_KERNEL
);
822 lbs_pr_err("error in kzalloc\n");
828 p_dev
->config_flags
|= CONF_ENABLE_IRQ
| CONF_AUTO_SET_IO
;
830 if (pcmcia_loop_config(p_dev
, if_cs_ioprobe
, NULL
)) {
831 lbs_pr_err("error in pcmcia_loop_config\n");
836 * Allocate an interrupt line. Note that this does not assign
837 * a handler to the interrupt, unless the 'Handler' member of
838 * the irq structure is initialized.
843 /* Initialize io access */
844 card
->iobase
= ioport_map(p_dev
->resource
[0]->start
,
845 resource_size(p_dev
->resource
[0]));
847 lbs_pr_err("error in ioport_map\n");
853 * This actually configures the PCMCIA socket -- setting up
854 * the I/O windows and the interrupt mapping, and putting the
855 * card and host interface into "Memory and IO" mode.
857 ret
= pcmcia_enable_device(p_dev
);
859 lbs_pr_err("error in pcmcia_enable_device\n");
863 /* Finally, report what we've done */
864 lbs_deb_cs("irq %d, io %pR", p_dev
->irq
, p_dev
->resource
[0]);
867 * Most of the libertas cards can do unaligned register access, but some
868 * weird ones can not. That's especially true for the CF8305 card.
870 card
->align_regs
= 0;
872 /* Check if we have a current silicon */
873 prod_id
= if_cs_read8(card
, IF_CS_PRODUCT_ID
);
874 if (if_cs_hw_is_cf8305(p_dev
)) {
875 card
->align_regs
= 1;
876 if (prod_id
< IF_CS_CF8305_B1_REV
) {
877 lbs_pr_err("old chips like 8305 rev B3 "
878 "aren't supported\n");
884 if (if_cs_hw_is_cf8381(p_dev
) && prod_id
< IF_CS_CF8381_B3_REV
) {
885 lbs_pr_err("old chips like 8381 rev B3 aren't supported\n");
890 if (if_cs_hw_is_cf8385(p_dev
) && prod_id
< IF_CS_CF8385_B1_REV
) {
891 lbs_pr_err("old chips like 8385 rev B1 aren't supported\n");
896 /* Load the firmware early, before calling into libertas.ko */
897 ret
= if_cs_prog_helper(card
);
898 if (ret
== 0 && !if_cs_hw_is_cf8305(p_dev
))
899 ret
= if_cs_prog_real(card
);
903 /* Make this card known to the libertas driver */
904 priv
= lbs_add_card(card
, &p_dev
->dev
);
910 /* Finish setting up fields in lbs_private */
913 priv
->hw_host_to_card
= if_cs_host_to_card
;
914 priv
->enter_deep_sleep
= NULL
;
915 priv
->exit_deep_sleep
= NULL
;
916 priv
->reset_deep_sleep_wakeup
= NULL
;
919 /* Now actually get the IRQ */
920 ret
= request_irq(p_dev
->irq
, if_cs_interrupt
,
921 IRQF_SHARED
, DRV_NAME
, card
);
923 lbs_pr_err("error in request_irq\n");
927 /* Clear any interrupt cause that happend while sending
928 * firmware/initializing card */
929 if_cs_write16(card
, IF_CS_CARD_INT_CAUSE
, IF_CS_BIT_MASK
);
930 if_cs_enable_ints(card
);
932 /* And finally bring the card up */
933 if (lbs_start_card(priv
) != 0) {
934 lbs_pr_err("could not activate card\n");
942 lbs_remove_card(priv
);
944 ioport_unmap(card
->iobase
);
946 pcmcia_disable_device(p_dev
);
948 lbs_deb_leave_args(LBS_DEB_CS
, "ret %d", ret
);
954 * This deletes a driver "instance". The device is de-registered with
955 * Card Services. If it has been released, all local data structures
956 * are freed. Otherwise, the structures will be freed when the device
959 static void if_cs_detach(struct pcmcia_device
*p_dev
)
961 struct if_cs_card
*card
= p_dev
->priv
;
963 lbs_deb_enter(LBS_DEB_CS
);
965 lbs_stop_card(card
->priv
);
966 lbs_remove_card(card
->priv
);
967 if_cs_disable_ints(card
);
968 if_cs_release(p_dev
);
971 lbs_deb_leave(LBS_DEB_CS
);
976 /********************************************************************/
977 /* Module initialization */
978 /********************************************************************/
980 static struct pcmcia_device_id if_cs_ids
[] = {
981 PCMCIA_DEVICE_MANF_CARD(CF8305_MANFID
, CF8305_CARDID
),
982 PCMCIA_DEVICE_MANF_CARD(CF8381_MANFID
, CF8381_CARDID
),
983 PCMCIA_DEVICE_MANF_CARD(CF8385_MANFID
, CF8385_CARDID
),
986 MODULE_DEVICE_TABLE(pcmcia
, if_cs_ids
);
989 static struct pcmcia_driver lbs_driver
= {
990 .owner
= THIS_MODULE
,
994 .probe
= if_cs_probe
,
995 .remove
= if_cs_detach
,
996 .id_table
= if_cs_ids
,
1000 static int __init
if_cs_init(void)
1004 lbs_deb_enter(LBS_DEB_CS
);
1005 ret
= pcmcia_register_driver(&lbs_driver
);
1006 lbs_deb_leave(LBS_DEB_CS
);
1011 static void __exit
if_cs_exit(void)
1013 lbs_deb_enter(LBS_DEB_CS
);
1014 pcmcia_unregister_driver(&lbs_driver
);
1015 lbs_deb_leave(LBS_DEB_CS
);
1019 module_init(if_cs_init
);
1020 module_exit(if_cs_exit
);