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/delay.h>
26 #include <linux/moduleparam.h>
27 #include <linux/firmware.h>
28 #include <linux/netdevice.h>
30 #include <pcmcia/cs_types.h>
31 #include <pcmcia/cs.h>
32 #include <pcmcia/cistpl.h>
33 #include <pcmcia/ds.h>
37 #define DRV_NAME "libertas_cs"
44 /********************************************************************/
46 /********************************************************************/
48 MODULE_AUTHOR("Holger Schurig <hs4233@mail.mn-solutions.de>");
49 MODULE_DESCRIPTION("Driver for Marvell 83xx compact flash WLAN cards");
50 MODULE_LICENSE("GPL");
51 MODULE_FIRMWARE("libertas_cs_helper.fw");
55 /********************************************************************/
57 /********************************************************************/
60 struct pcmcia_device
*p_dev
;
61 struct lbs_private
*priv
;
68 /********************************************************************/
70 /********************************************************************/
72 /* This define enables wrapper functions which allow you
73 to dump all register accesses. You normally won't this,
74 except for development */
75 /* #define DEBUG_IO */
78 static int debug_output
= 0;
80 /* This way the compiler optimizes the printk's away */
81 #define debug_output 0
84 static inline unsigned int if_cs_read8(struct if_cs_card
*card
, uint reg
)
86 unsigned int val
= ioread8(card
->iobase
+ reg
);
88 printk(KERN_INFO
"inb %08x<%02x\n", reg
, val
);
91 static inline unsigned int if_cs_read16(struct if_cs_card
*card
, uint reg
)
93 unsigned int val
= ioread16(card
->iobase
+ reg
);
95 printk(KERN_INFO
"inw %08x<%04x\n", reg
, val
);
98 static inline void if_cs_read16_rep(
99 struct if_cs_card
*card
,
105 printk(KERN_INFO
"insw %08x<(0x%lx words)\n",
107 ioread16_rep(card
->iobase
+ reg
, buf
, count
);
110 static inline void if_cs_write8(struct if_cs_card
*card
, uint reg
, u8 val
)
113 printk(KERN_INFO
"outb %08x>%02x\n", reg
, val
);
114 iowrite8(val
, card
->iobase
+ reg
);
117 static inline void if_cs_write16(struct if_cs_card
*card
, uint reg
, u16 val
)
120 printk(KERN_INFO
"outw %08x>%04x\n", reg
, val
);
121 iowrite16(val
, card
->iobase
+ reg
);
124 static inline void if_cs_write16_rep(
125 struct if_cs_card
*card
,
131 printk(KERN_INFO
"outsw %08x>(0x%lx words)\n",
133 iowrite16_rep(card
->iobase
+ reg
, buf
, count
);
138 * I know that polling/delaying is frowned upon. However, this procedure
139 * with polling is needed while downloading the firmware. At this stage,
140 * the hardware does unfortunately not create any interrupts.
142 * Fortunately, this function is never used once the firmware is in
145 * As a reference, see the "Firmware Specification v5.1", page 18
146 * and 19. I did not follow their suggested timing to the word,
147 * but this works nice & fast anyway.
149 static int if_cs_poll_while_fw_download(struct if_cs_card
*card
, uint addr
, u8 reg
)
153 for (i
= 0; i
< 100000; i
++) {
154 u8 val
= if_cs_read8(card
, addr
);
165 * First the bitmasks for the host/card interrupt/status registers:
167 #define IF_CS_BIT_TX 0x0001
168 #define IF_CS_BIT_RX 0x0002
169 #define IF_CS_BIT_COMMAND 0x0004
170 #define IF_CS_BIT_RESP 0x0008
171 #define IF_CS_BIT_EVENT 0x0010
172 #define IF_CS_BIT_MASK 0x001f
177 * It's not really clear to me what the host status register is for. It
178 * needs to be set almost in union with "host int cause". The following
179 * bits from above are used:
181 * IF_CS_BIT_TX driver downloaded a data packet
182 * IF_CS_BIT_RX driver got a data packet
183 * IF_CS_BIT_COMMAND driver downloaded a command
184 * IF_CS_BIT_RESP not used (has some meaning with powerdown)
185 * IF_CS_BIT_EVENT driver read a host event
187 #define IF_CS_HOST_STATUS 0x00000000
190 * With the host int cause register can the host (that is, Linux) cause
191 * an interrupt in the firmware, to tell the firmware about those events:
193 * IF_CS_BIT_TX a data packet has been downloaded
194 * IF_CS_BIT_RX a received data packet has retrieved
195 * IF_CS_BIT_COMMAND a firmware block or a command has been downloaded
196 * IF_CS_BIT_RESP not used (has some meaning with powerdown)
197 * IF_CS_BIT_EVENT a host event (link lost etc) has been retrieved
199 #define IF_CS_HOST_INT_CAUSE 0x00000002
202 * The host int mask register is used to enable/disable interrupt. However,
203 * I have the suspicion that disabled interrupts are lost.
205 #define IF_CS_HOST_INT_MASK 0x00000004
208 * Used to send or receive data packets:
210 #define IF_CS_WRITE 0x00000016
211 #define IF_CS_WRITE_LEN 0x00000014
212 #define IF_CS_READ 0x00000010
213 #define IF_CS_READ_LEN 0x00000024
216 * Used to send commands (and to send firmware block) and to
217 * receive command responses:
219 #define IF_CS_CMD 0x0000001A
220 #define IF_CS_CMD_LEN 0x00000018
221 #define IF_CS_RESP 0x00000012
222 #define IF_CS_RESP_LEN 0x00000030
225 * The card status registers shows what the card/firmware actually
228 * IF_CS_BIT_TX you may send a data packet
229 * IF_CS_BIT_RX you may retrieve a data packet
230 * IF_CS_BIT_COMMAND you may send a command
231 * IF_CS_BIT_RESP you may retrieve a command response
232 * IF_CS_BIT_EVENT the card has a event for use (link lost, snr low etc)
234 * When reading this register several times, you will get back the same
235 * results --- with one exception: the IF_CS_BIT_EVENT clear itself
238 * Not that we don't rely on BIT_RX,_BIT_RESP or BIT_EVENT because
239 * we handle this via the card int cause register.
241 #define IF_CS_CARD_STATUS 0x00000020
242 #define IF_CS_CARD_STATUS_MASK 0x7f00
245 * The card int cause register is used by the card/firmware to notify us
246 * about the following events:
248 * IF_CS_BIT_TX a data packet has successfully been sentx
249 * IF_CS_BIT_RX a data packet has been received and can be retrieved
250 * IF_CS_BIT_COMMAND not used
251 * IF_CS_BIT_RESP the firmware has a command response for us
252 * IF_CS_BIT_EVENT the card has a event for use (link lost, snr low etc)
254 #define IF_CS_CARD_INT_CAUSE 0x00000022
257 * This is used to for handshaking with the card's bootloader/helper image
258 * to synchronize downloading of firmware blocks.
260 #define IF_CS_SQ_READ_LOW 0x00000028
261 #define IF_CS_SQ_HELPER_OK 0x10
264 * The scratch register tells us ...
266 * IF_CS_SCRATCH_BOOT_OK the bootloader runs
267 * IF_CS_SCRATCH_HELPER_OK the helper firmware already runs
269 #define IF_CS_SCRATCH 0x0000003F
270 #define IF_CS_SCRATCH_BOOT_OK 0x00
271 #define IF_CS_SCRATCH_HELPER_OK 0x5a
274 * Used to detect ancient chips:
276 #define IF_CS_PRODUCT_ID 0x0000001C
277 #define IF_CS_CF8385_B1_REV 0x12
278 #define IF_CS_CF8381_B3_REV 0x04
279 #define IF_CS_CF8305_B1_REV 0x03
282 * Used to detect other cards than CF8385 since their revisions of silicon
283 * doesn't match those from CF8385, eg. CF8381 B3 works with this driver.
285 #define CF8305_MANFID 0x02db
286 #define CF8305_CARDID 0x8103
287 #define CF8381_MANFID 0x02db
288 #define CF8381_CARDID 0x6064
289 #define CF8385_MANFID 0x02df
290 #define CF8385_CARDID 0x8103
292 static inline int if_cs_hw_is_cf8305(struct pcmcia_device
*p_dev
)
294 return (p_dev
->manf_id
== CF8305_MANFID
&&
295 p_dev
->card_id
== CF8305_CARDID
);
298 static inline int if_cs_hw_is_cf8381(struct pcmcia_device
*p_dev
)
300 return (p_dev
->manf_id
== CF8381_MANFID
&&
301 p_dev
->card_id
== CF8381_CARDID
);
304 static inline int if_cs_hw_is_cf8385(struct pcmcia_device
*p_dev
)
306 return (p_dev
->manf_id
== CF8385_MANFID
&&
307 p_dev
->card_id
== CF8385_CARDID
);
310 /********************************************************************/
311 /* I/O and interrupt handling */
312 /********************************************************************/
314 static inline void if_cs_enable_ints(struct if_cs_card
*card
)
316 lbs_deb_enter(LBS_DEB_CS
);
317 if_cs_write16(card
, IF_CS_HOST_INT_MASK
, 0);
320 static inline void if_cs_disable_ints(struct if_cs_card
*card
)
322 lbs_deb_enter(LBS_DEB_CS
);
323 if_cs_write16(card
, IF_CS_HOST_INT_MASK
, IF_CS_BIT_MASK
);
327 * Called from if_cs_host_to_card to send a command to the hardware
329 static int if_cs_send_cmd(struct lbs_private
*priv
, u8
*buf
, u16 nb
)
331 struct if_cs_card
*card
= (struct if_cs_card
*)priv
->card
;
335 lbs_deb_enter(LBS_DEB_CS
);
336 if_cs_disable_ints(card
);
338 /* Is hardware ready? */
340 u16 status
= if_cs_read16(card
, IF_CS_CARD_STATUS
);
341 if (status
& IF_CS_BIT_COMMAND
)
344 lbs_pr_err("card not ready for commands\n");
350 if_cs_write16(card
, IF_CS_CMD_LEN
, nb
);
352 if_cs_write16_rep(card
, IF_CS_CMD
, buf
, nb
/ 2);
353 /* Are we supposed to transfer an odd amount of bytes? */
355 if_cs_write8(card
, IF_CS_CMD
, buf
[nb
-1]);
357 /* "Assert the download over interrupt command in the Host
358 * status register" */
359 if_cs_write16(card
, IF_CS_HOST_STATUS
, IF_CS_BIT_COMMAND
);
361 /* "Assert the download over interrupt command in the Card
362 * interrupt case register" */
363 if_cs_write16(card
, IF_CS_HOST_INT_CAUSE
, IF_CS_BIT_COMMAND
);
367 if_cs_enable_ints(card
);
368 lbs_deb_leave_args(LBS_DEB_CS
, "ret %d", ret
);
373 * Called from if_cs_host_to_card to send a data to the hardware
375 static void if_cs_send_data(struct lbs_private
*priv
, u8
*buf
, u16 nb
)
377 struct if_cs_card
*card
= (struct if_cs_card
*)priv
->card
;
380 lbs_deb_enter(LBS_DEB_CS
);
381 if_cs_disable_ints(card
);
383 status
= if_cs_read16(card
, IF_CS_CARD_STATUS
);
384 BUG_ON((status
& IF_CS_BIT_TX
) == 0);
386 if_cs_write16(card
, IF_CS_WRITE_LEN
, nb
);
388 /* write even number of bytes, then odd byte if necessary */
389 if_cs_write16_rep(card
, IF_CS_WRITE
, buf
, nb
/ 2);
391 if_cs_write8(card
, IF_CS_WRITE
, buf
[nb
-1]);
393 if_cs_write16(card
, IF_CS_HOST_STATUS
, IF_CS_BIT_TX
);
394 if_cs_write16(card
, IF_CS_HOST_INT_CAUSE
, IF_CS_BIT_TX
);
395 if_cs_enable_ints(card
);
397 lbs_deb_leave(LBS_DEB_CS
);
401 * Get the command result out of the card.
403 static int if_cs_receive_cmdres(struct lbs_private
*priv
, u8
*data
, u32
*len
)
409 lbs_deb_enter(LBS_DEB_CS
);
411 /* is hardware ready? */
412 status
= if_cs_read16(priv
->card
, IF_CS_CARD_STATUS
);
413 if ((status
& IF_CS_BIT_RESP
) == 0) {
414 lbs_pr_err("no cmd response in card\n");
419 *len
= if_cs_read16(priv
->card
, IF_CS_RESP_LEN
);
420 if ((*len
== 0) || (*len
> LBS_CMD_BUFFER_SIZE
)) {
421 lbs_pr_err("card cmd buffer has invalid # of bytes (%d)\n", *len
);
425 /* read even number of bytes, then odd byte if necessary */
426 if_cs_read16_rep(priv
->card
, IF_CS_RESP
, data
, *len
/sizeof(u16
));
428 data
[*len
-1] = if_cs_read8(priv
->card
, IF_CS_RESP
);
430 /* This is a workaround for a firmware that reports too much
435 /* Clear this flag again */
436 spin_lock_irqsave(&priv
->driver_lock
, flags
);
437 priv
->dnld_sent
= DNLD_RES_RECEIVED
;
438 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
441 lbs_deb_leave_args(LBS_DEB_CS
, "ret %d, len %d", ret
, *len
);
445 static struct sk_buff
*if_cs_receive_data(struct lbs_private
*priv
)
447 struct sk_buff
*skb
= NULL
;
451 lbs_deb_enter(LBS_DEB_CS
);
453 len
= if_cs_read16(priv
->card
, IF_CS_READ_LEN
);
454 if (len
== 0 || len
> MRVDRV_ETH_RX_PACKET_BUFFER_SIZE
) {
455 lbs_pr_err("card data buffer has invalid # of bytes (%d)\n", len
);
456 priv
->dev
->stats
.rx_dropped
++;
460 skb
= dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE
+ 2);
464 skb_reserve(skb
, 2);/* 16 byte align */
467 /* read even number of bytes, then odd byte if necessary */
468 if_cs_read16_rep(priv
->card
, IF_CS_READ
, data
, len
/sizeof(u16
));
470 data
[len
-1] = if_cs_read8(priv
->card
, IF_CS_READ
);
473 if_cs_write16(priv
->card
, IF_CS_HOST_STATUS
, IF_CS_BIT_RX
);
474 if_cs_write16(priv
->card
, IF_CS_HOST_INT_CAUSE
, IF_CS_BIT_RX
);
477 lbs_deb_leave_args(LBS_DEB_CS
, "ret %p", skb
);
481 static irqreturn_t
if_cs_interrupt(int irq
, void *data
)
483 struct if_cs_card
*card
= data
;
484 struct lbs_private
*priv
= card
->priv
;
487 lbs_deb_enter(LBS_DEB_CS
);
489 /* Ask card interrupt cause register if there is something for us */
490 cause
= if_cs_read16(card
, IF_CS_CARD_INT_CAUSE
);
491 lbs_deb_cs("cause 0x%04x\n", cause
);
498 if (cause
== 0xffff) {
499 /* Read in junk, the card has probably been removed */
500 card
->priv
->surpriseremoved
= 1;
504 if (cause
& IF_CS_BIT_RX
) {
506 lbs_deb_cs("rx packet\n");
507 skb
= if_cs_receive_data(priv
);
509 lbs_process_rxed_packet(priv
, skb
);
512 if (cause
& IF_CS_BIT_TX
) {
513 lbs_deb_cs("tx done\n");
514 lbs_host_to_card_done(priv
);
517 if (cause
& IF_CS_BIT_RESP
) {
521 lbs_deb_cs("cmd resp\n");
522 spin_lock_irqsave(&priv
->driver_lock
, flags
);
523 i
= (priv
->resp_idx
== 0) ? 1 : 0;
524 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
526 BUG_ON(priv
->resp_len
[i
]);
527 if_cs_receive_cmdres(priv
, priv
->resp_buf
[i
],
530 spin_lock_irqsave(&priv
->driver_lock
, flags
);
531 lbs_notify_command_response(priv
, i
);
532 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
535 if (cause
& IF_CS_BIT_EVENT
) {
536 u16 status
= if_cs_read16(priv
->card
, IF_CS_CARD_STATUS
);
537 if_cs_write16(priv
->card
, IF_CS_HOST_INT_CAUSE
,
539 lbs_queue_event(priv
, (status
& IF_CS_CARD_STATUS_MASK
) >> 8);
542 /* Clear interrupt cause */
543 if_cs_write16(card
, IF_CS_CARD_INT_CAUSE
, cause
& IF_CS_BIT_MASK
);
545 lbs_deb_leave(LBS_DEB_CS
);
552 /********************************************************************/
554 /********************************************************************/
557 * Tries to program the helper firmware.
559 * Return 0 on success
561 static int if_cs_prog_helper(struct if_cs_card
*card
)
566 const struct firmware
*fw
;
568 lbs_deb_enter(LBS_DEB_CS
);
571 * This is the only place where an unaligned register access happens on
572 * the CF8305 card, therefore for the sake of speed of the driver, we do
573 * the alignment correction here.
575 if (card
->align_regs
)
576 scratch
= if_cs_read16(card
, IF_CS_SCRATCH
) >> 8;
578 scratch
= if_cs_read8(card
, IF_CS_SCRATCH
);
580 /* "If the value is 0x5a, the firmware is already
581 * downloaded successfully"
583 if (scratch
== IF_CS_SCRATCH_HELPER_OK
)
586 /* "If the value is != 00, it is invalid value of register */
587 if (scratch
!= IF_CS_SCRATCH_BOOT_OK
) {
592 /* TODO: make firmware file configurable */
593 ret
= request_firmware(&fw
, "libertas_cs_helper.fw",
596 lbs_pr_err("can't load helper firmware\n");
600 lbs_deb_cs("helper size %td\n", fw
->size
);
602 /* "Set the 5 bytes of the helper image to 0" */
603 /* Not needed, this contains an ARM branch instruction */
606 /* "the number of bytes to send is 256" */
608 int remain
= fw
->size
- sent
;
613 /* "write the number of bytes to be sent to the I/O Command
614 * write length register" */
615 if_cs_write16(card
, IF_CS_CMD_LEN
, count
);
617 /* "write this to I/O Command port register as 16 bit writes */
619 if_cs_write16_rep(card
, IF_CS_CMD
,
623 /* "Assert the download over interrupt command in the Host
624 * status register" */
625 if_cs_write8(card
, IF_CS_HOST_STATUS
, IF_CS_BIT_COMMAND
);
627 /* "Assert the download over interrupt command in the Card
628 * interrupt case register" */
629 if_cs_write16(card
, IF_CS_HOST_INT_CAUSE
, IF_CS_BIT_COMMAND
);
631 /* "The host polls the Card Status register ... for 50 ms before
632 declaring a failure */
633 ret
= if_cs_poll_while_fw_download(card
, IF_CS_CARD_STATUS
,
636 lbs_pr_err("can't download helper at 0x%x, ret %d\n",
648 release_firmware(fw
);
650 lbs_deb_leave_args(LBS_DEB_CS
, "ret %d", ret
);
655 static int if_cs_prog_real(struct if_cs_card
*card
)
657 const struct firmware
*fw
;
663 lbs_deb_enter(LBS_DEB_CS
);
665 /* TODO: make firmware file configurable */
666 ret
= request_firmware(&fw
, "libertas_cs.fw",
669 lbs_pr_err("can't load firmware\n");
673 lbs_deb_cs("fw size %td\n", fw
->size
);
675 ret
= if_cs_poll_while_fw_download(card
, IF_CS_SQ_READ_LOW
,
678 lbs_pr_err("helper firmware doesn't answer\n");
682 for (sent
= 0; sent
< fw
->size
; sent
+= len
) {
683 len
= if_cs_read16(card
, IF_CS_SQ_READ_LOW
);
686 lbs_pr_info("odd, need to retry this firmware block\n");
692 lbs_pr_err("could not download firmware\n");
701 if_cs_write16(card
, IF_CS_CMD_LEN
, len
);
703 if_cs_write16_rep(card
, IF_CS_CMD
,
706 if_cs_write8(card
, IF_CS_HOST_STATUS
, IF_CS_BIT_COMMAND
);
707 if_cs_write16(card
, IF_CS_HOST_INT_CAUSE
, IF_CS_BIT_COMMAND
);
709 ret
= if_cs_poll_while_fw_download(card
, IF_CS_CARD_STATUS
,
712 lbs_pr_err("can't download firmware at 0x%x\n", sent
);
717 ret
= if_cs_poll_while_fw_download(card
, IF_CS_SCRATCH
, 0x5a);
719 lbs_pr_err("firmware download failed\n");
722 release_firmware(fw
);
725 lbs_deb_leave_args(LBS_DEB_CS
, "ret %d", ret
);
731 /********************************************************************/
732 /* Callback functions for libertas.ko */
733 /********************************************************************/
735 /* Send commands or data packets to the card */
736 static int if_cs_host_to_card(struct lbs_private
*priv
,
743 lbs_deb_enter_args(LBS_DEB_CS
, "type %d, bytes %d", type
, nb
);
747 priv
->dnld_sent
= DNLD_DATA_SENT
;
748 if_cs_send_data(priv
, buf
, nb
);
752 priv
->dnld_sent
= DNLD_CMD_SENT
;
753 ret
= if_cs_send_cmd(priv
, buf
, nb
);
756 lbs_pr_err("%s: unsupported type %d\n", __func__
, type
);
759 lbs_deb_leave_args(LBS_DEB_CS
, "ret %d", ret
);
764 /********************************************************************/
766 /********************************************************************/
769 * After a card is removed, if_cs_release() will unregister the
770 * device, and release the PCMCIA configuration. If the device is
771 * still open, this will be postponed until it is closed.
773 static void if_cs_release(struct pcmcia_device
*p_dev
)
775 struct if_cs_card
*card
= p_dev
->priv
;
777 lbs_deb_enter(LBS_DEB_CS
);
779 free_irq(p_dev
->irq
.AssignedIRQ
, card
);
780 pcmcia_disable_device(p_dev
);
782 ioport_unmap(card
->iobase
);
784 lbs_deb_leave(LBS_DEB_CS
);
789 * This creates an "instance" of the driver, allocating local data
790 * structures for one device. The device is registered with Card
793 * The dev_link structure is initialized, but we don't actually
794 * configure the card at this point -- we wait until we receive a card
798 static int if_cs_ioprobe(struct pcmcia_device
*p_dev
,
799 cistpl_cftable_entry_t
*cfg
,
800 cistpl_cftable_entry_t
*dflt
,
804 p_dev
->io
.Attributes1
= IO_DATA_PATH_WIDTH_AUTO
;
805 p_dev
->io
.BasePort1
= cfg
->io
.win
[0].base
;
806 p_dev
->io
.NumPorts1
= cfg
->io
.win
[0].len
;
808 /* Do we need to allocate an interrupt? */
809 if (cfg
->irq
.IRQInfo1
)
810 p_dev
->conf
.Attributes
|= CONF_ENABLE_IRQ
;
812 /* IO window settings */
813 if (cfg
->io
.nwin
!= 1) {
814 lbs_pr_err("wrong CIS (check number of IO windows)\n");
818 /* This reserves IO space but doesn't actually enable it */
819 return pcmcia_request_io(p_dev
, &p_dev
->io
);
822 static int if_cs_probe(struct pcmcia_device
*p_dev
)
825 unsigned int prod_id
;
826 struct lbs_private
*priv
;
827 struct if_cs_card
*card
;
829 lbs_deb_enter(LBS_DEB_CS
);
831 card
= kzalloc(sizeof(struct if_cs_card
), GFP_KERNEL
);
833 lbs_pr_err("error in kzalloc\n");
839 p_dev
->irq
.Attributes
= IRQ_TYPE_DYNAMIC_SHARING
;
840 p_dev
->irq
.Handler
= NULL
;
842 p_dev
->conf
.Attributes
= 0;
843 p_dev
->conf
.IntType
= INT_MEMORY_AND_IO
;
845 if (pcmcia_loop_config(p_dev
, if_cs_ioprobe
, NULL
)) {
846 lbs_pr_err("error in pcmcia_loop_config\n");
852 * Allocate an interrupt line. Note that this does not assign
853 * a handler to the interrupt, unless the 'Handler' member of
854 * the irq structure is initialized.
856 if (p_dev
->conf
.Attributes
& CONF_ENABLE_IRQ
) {
857 ret
= pcmcia_request_irq(p_dev
, &p_dev
->irq
);
859 lbs_pr_err("error in pcmcia_request_irq\n");
864 /* Initialize io access */
865 card
->iobase
= ioport_map(p_dev
->io
.BasePort1
, p_dev
->io
.NumPorts1
);
867 lbs_pr_err("error in ioport_map\n");
873 * This actually configures the PCMCIA socket -- setting up
874 * the I/O windows and the interrupt mapping, and putting the
875 * card and host interface into "Memory and IO" mode.
877 ret
= pcmcia_request_configuration(p_dev
, &p_dev
->conf
);
879 lbs_pr_err("error in pcmcia_request_configuration\n");
883 /* Finally, report what we've done */
884 lbs_deb_cs("irq %d, io 0x%04x-0x%04x\n",
885 p_dev
->irq
.AssignedIRQ
, p_dev
->io
.BasePort1
,
886 p_dev
->io
.BasePort1
+ p_dev
->io
.NumPorts1
- 1);
889 * Most of the libertas cards can do unaligned register access, but some
890 * weird ones can not. That's especially true for the CF8305 card.
892 card
->align_regs
= 0;
894 /* Check if we have a current silicon */
895 prod_id
= if_cs_read8(card
, IF_CS_PRODUCT_ID
);
896 if (if_cs_hw_is_cf8305(p_dev
)) {
897 card
->align_regs
= 1;
898 if (prod_id
< IF_CS_CF8305_B1_REV
) {
899 lbs_pr_err("old chips like 8305 rev B3 "
900 "aren't supported\n");
906 if (if_cs_hw_is_cf8381(p_dev
) && prod_id
< IF_CS_CF8381_B3_REV
) {
907 lbs_pr_err("old chips like 8381 rev B3 aren't supported\n");
912 if (if_cs_hw_is_cf8385(p_dev
) && prod_id
< IF_CS_CF8385_B1_REV
) {
913 lbs_pr_err("old chips like 8385 rev B1 aren't supported\n");
918 /* Load the firmware early, before calling into libertas.ko */
919 ret
= if_cs_prog_helper(card
);
920 if (ret
== 0 && !if_cs_hw_is_cf8305(p_dev
))
921 ret
= if_cs_prog_real(card
);
925 /* Make this card known to the libertas driver */
926 priv
= lbs_add_card(card
, &p_dev
->dev
);
932 /* Finish setting up fields in lbs_private */
935 priv
->hw_host_to_card
= if_cs_host_to_card
;
936 priv
->enter_deep_sleep
= NULL
;
937 priv
->exit_deep_sleep
= NULL
;
938 priv
->reset_deep_sleep_wakeup
= NULL
;
941 /* Now actually get the IRQ */
942 ret
= request_irq(p_dev
->irq
.AssignedIRQ
, if_cs_interrupt
,
943 IRQF_SHARED
, DRV_NAME
, card
);
945 lbs_pr_err("error in request_irq\n");
949 /* Clear any interrupt cause that happend while sending
950 * firmware/initializing card */
951 if_cs_write16(card
, IF_CS_CARD_INT_CAUSE
, IF_CS_BIT_MASK
);
952 if_cs_enable_ints(card
);
954 /* And finally bring the card up */
955 if (lbs_start_card(priv
) != 0) {
956 lbs_pr_err("could not activate card\n");
964 lbs_remove_card(priv
);
966 ioport_unmap(card
->iobase
);
968 pcmcia_disable_device(p_dev
);
970 lbs_deb_leave_args(LBS_DEB_CS
, "ret %d", ret
);
976 * This deletes a driver "instance". The device is de-registered with
977 * Card Services. If it has been released, all local data structures
978 * are freed. Otherwise, the structures will be freed when the device
981 static void if_cs_detach(struct pcmcia_device
*p_dev
)
983 struct if_cs_card
*card
= p_dev
->priv
;
985 lbs_deb_enter(LBS_DEB_CS
);
987 lbs_stop_card(card
->priv
);
988 lbs_remove_card(card
->priv
);
989 if_cs_disable_ints(card
);
990 if_cs_release(p_dev
);
993 lbs_deb_leave(LBS_DEB_CS
);
998 /********************************************************************/
999 /* Module initialization */
1000 /********************************************************************/
1002 static struct pcmcia_device_id if_cs_ids
[] = {
1003 PCMCIA_DEVICE_MANF_CARD(CF8305_MANFID
, CF8305_CARDID
),
1004 PCMCIA_DEVICE_MANF_CARD(CF8381_MANFID
, CF8381_CARDID
),
1005 PCMCIA_DEVICE_MANF_CARD(CF8385_MANFID
, CF8385_CARDID
),
1008 MODULE_DEVICE_TABLE(pcmcia
, if_cs_ids
);
1011 static struct pcmcia_driver lbs_driver
= {
1012 .owner
= THIS_MODULE
,
1016 .probe
= if_cs_probe
,
1017 .remove
= if_cs_detach
,
1018 .id_table
= if_cs_ids
,
1022 static int __init
if_cs_init(void)
1026 lbs_deb_enter(LBS_DEB_CS
);
1027 ret
= pcmcia_register_driver(&lbs_driver
);
1028 lbs_deb_leave(LBS_DEB_CS
);
1033 static void __exit
if_cs_exit(void)
1035 lbs_deb_enter(LBS_DEB_CS
);
1036 pcmcia_unregister_driver(&lbs_driver
);
1037 lbs_deb_leave(LBS_DEB_CS
);
1041 module_init(if_cs_init
);
1042 module_exit(if_cs_exit
);