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");
54 /********************************************************************/
56 /********************************************************************/
59 struct pcmcia_device *p_dev;
60 struct lbs_private *priv;
66 /********************************************************************/
68 /********************************************************************/
70 /* This define enables wrapper functions which allow you
71 to dump all register accesses. You normally won't this,
72 except for development */
73 /* #define DEBUG_IO */
76 static int debug_output = 0;
78 /* This way the compiler optimizes the printk's away */
79 #define debug_output 0
82 static inline unsigned int if_cs_read8(struct if_cs_card *card, uint reg)
84 unsigned int val = ioread8(card->iobase + reg);
86 printk(KERN_INFO "inb %08x<%02x\n", reg, val);
89 static inline unsigned int if_cs_read16(struct if_cs_card *card, uint reg)
91 unsigned int val = ioread16(card->iobase + reg);
93 printk(KERN_INFO "inw %08x<%04x\n", reg, val);
96 static inline void if_cs_read16_rep(
97 struct if_cs_card *card,
103 printk(KERN_INFO "insw %08x<(0x%lx words)\n",
105 ioread16_rep(card->iobase + reg, buf, count);
108 static inline void if_cs_write8(struct if_cs_card *card, uint reg, u8 val)
111 printk(KERN_INFO "outb %08x>%02x\n", reg, val);
112 iowrite8(val, card->iobase + reg);
115 static inline void if_cs_write16(struct if_cs_card *card, uint reg, u16 val)
118 printk(KERN_INFO "outw %08x>%04x\n", reg, val);
119 iowrite16(val, card->iobase + reg);
122 static inline void if_cs_write16_rep(
123 struct if_cs_card *card,
129 printk(KERN_INFO "outsw %08x>(0x%lx words)\n",
131 iowrite16_rep(card->iobase + reg, buf, count);
136 * I know that polling/delaying is frowned upon. However, this procedure
137 * with polling is needed while downloading the firmware. At this stage,
138 * the hardware does unfortunately not create any interrupts.
140 * Fortunately, this function is never used once the firmware is in
143 * As a reference, see the "Firmware Specification v5.1", page 18
144 * and 19. I did not follow their suggested timing to the word,
145 * but this works nice & fast anyway.
147 static int if_cs_poll_while_fw_download(struct if_cs_card *card, uint addr, u8 reg)
151 for (i = 0; i < 100000; i++) {
152 u8 val = if_cs_read8(card, addr);
163 * First the bitmasks for the host/card interrupt/status registers:
165 #define IF_CS_BIT_TX 0x0001
166 #define IF_CS_BIT_RX 0x0002
167 #define IF_CS_BIT_COMMAND 0x0004
168 #define IF_CS_BIT_RESP 0x0008
169 #define IF_CS_BIT_EVENT 0x0010
170 #define IF_CS_BIT_MASK 0x001f
175 * It's not really clear to me what the host status register is for. It
176 * needs to be set almost in union with "host int cause". The following
177 * bits from above are used:
179 * IF_CS_BIT_TX driver downloaded a data packet
180 * IF_CS_BIT_RX driver got a data packet
181 * IF_CS_BIT_COMMAND driver downloaded a command
182 * IF_CS_BIT_RESP not used (has some meaning with powerdown)
183 * IF_CS_BIT_EVENT driver read a host event
185 #define IF_CS_HOST_STATUS 0x00000000
188 * With the host int cause register can the host (that is, Linux) cause
189 * an interrupt in the firmware, to tell the firmware about those events:
191 * IF_CS_BIT_TX a data packet has been downloaded
192 * IF_CS_BIT_RX a received data packet has retrieved
193 * IF_CS_BIT_COMMAND a firmware block or a command has been downloaded
194 * IF_CS_BIT_RESP not used (has some meaning with powerdown)
195 * IF_CS_BIT_EVENT a host event (link lost etc) has been retrieved
197 #define IF_CS_HOST_INT_CAUSE 0x00000002
200 * The host int mask register is used to enable/disable interrupt. However,
201 * I have the suspicion that disabled interrupts are lost.
203 #define IF_CS_HOST_INT_MASK 0x00000004
206 * Used to send or receive data packets:
208 #define IF_CS_HOST_WRITE 0x00000016
209 #define IF_CS_HOST_WRITE_LEN 0x00000014
210 #define IF_CS_READ 0x00000010
211 #define IF_CS_READ_LEN 0x00000024
214 * Used to send commands (and to send firmware block) and to
215 * receive command responses:
217 #define IF_CS_HOST_CMD 0x0000001A
218 #define IF_CS_HOST_CMD_LEN 0x00000018
219 #define IF_CS_CARD_CMD 0x00000012
220 #define IF_CS_CARD_CMD_LEN 0x00000030
223 * The card status registers shows what the card/firmware actually
226 * IF_CS_BIT_TX you may send a data packet
227 * IF_CS_BIT_RX you may retrieve a data packet
228 * IF_CS_BIT_COMMAND you may send a command
229 * IF_CS_BIT_RESP you may retrieve a command response
230 * IF_CS_BIT_EVENT the card has a event for use (link lost, snr low etc)
232 * When reading this register several times, you will get back the same
233 * results --- with one exception: the IF_CS_BIT_EVENT clear itself
236 * Not that we don't rely on BIT_RX,_BIT_RESP or BIT_EVENT because
237 * we handle this via the card int cause register.
239 #define IF_CS_CARD_STATUS 0x00000020
240 #define IF_CS_CARD_STATUS_MASK 0x7f00
243 * The card int cause register is used by the card/firmware to notify us
244 * about the following events:
246 * IF_CS_BIT_TX a data packet has successfully been sentx
247 * IF_CS_BIT_RX a data packet has been received and can be retrieved
248 * IF_CS_BIT_COMMAND not used
249 * IF_CS_BIT_RESP the firmware has a command response for us
250 * IF_CS_BIT_EVENT the card has a event for use (link lost, snr low etc)
252 #define IF_CS_CARD_INT_CAUSE 0x00000022
255 * This is used to for handshaking with the card's bootloader/helper image
256 * to synchronize downloading of firmware blocks.
258 #define IF_CS_CARD_SQ_READ_LOW 0x00000028
259 #define IF_CS_CARD_SQ_HELPER_OK 0x10
262 * The scratch register tells us ...
264 * IF_CS_SCRATCH_BOOT_OK the bootloader runs
265 * IF_CS_SCRATCH_HELPER_OK the helper firmware already runs
267 #define IF_CS_SCRATCH 0x0000003F
268 #define IF_CS_SCRATCH_BOOT_OK 0x00
269 #define IF_CS_SCRATCH_HELPER_OK 0x5a
272 /********************************************************************/
273 /* I/O and interrupt handling */
274 /********************************************************************/
276 static inline void if_cs_enable_ints(struct if_cs_card *card)
278 lbs_deb_enter(LBS_DEB_CS);
279 if_cs_write16(card, IF_CS_HOST_INT_MASK, 0);
282 static inline void if_cs_disable_ints(struct if_cs_card *card)
284 lbs_deb_enter(LBS_DEB_CS);
285 if_cs_write16(card, IF_CS_HOST_INT_MASK, IF_CS_BIT_MASK);
289 * Called from if_cs_host_to_card to send a command to the hardware
291 static int if_cs_send_cmd(struct lbs_private *priv, u8 *buf, u16 nb)
293 struct if_cs_card *card = (struct if_cs_card *)priv->card;
297 lbs_deb_enter(LBS_DEB_CS);
298 if_cs_disable_ints(card);
300 /* Is hardware ready? */
302 u16 val = if_cs_read16(card, IF_CS_CARD_STATUS);
303 if (val & IF_CS_BIT_COMMAND)
306 lbs_pr_err("card not ready for commands\n");
312 if_cs_write16(card, IF_CS_HOST_CMD_LEN, nb);
314 if_cs_write16_rep(card, IF_CS_HOST_CMD, buf, nb / 2);
315 /* Are we supposed to transfer an odd amount of bytes? */
317 if_cs_write8(card, IF_CS_HOST_CMD, buf[nb-1]);
319 /* "Assert the download over interrupt command in the Host
320 * status register" */
321 if_cs_write16(card, IF_CS_HOST_STATUS, IF_CS_BIT_COMMAND);
323 /* "Assert the download over interrupt command in the Card
324 * interrupt case register" */
325 if_cs_write16(card, IF_CS_HOST_INT_CAUSE, IF_CS_BIT_COMMAND);
329 if_cs_enable_ints(card);
330 lbs_deb_leave_args(LBS_DEB_CS, "ret %d", ret);
335 * Called from if_cs_host_to_card to send a data to the hardware
337 static void if_cs_send_data(struct lbs_private *priv, u8 *buf, u16 nb)
339 struct if_cs_card *card = (struct if_cs_card *)priv->card;
342 lbs_deb_enter(LBS_DEB_CS);
343 if_cs_disable_ints(card);
345 status = if_cs_read16(card, IF_CS_CARD_STATUS);
346 BUG_ON((status & IF_CS_BIT_TX) == 0);
348 if_cs_write16(card, IF_CS_HOST_WRITE_LEN, nb);
350 /* write even number of bytes, then odd byte if necessary */
351 if_cs_write16_rep(card, IF_CS_HOST_WRITE, buf, nb / 2);
353 if_cs_write8(card, IF_CS_HOST_WRITE, buf[nb-1]);
355 if_cs_write16(card, IF_CS_HOST_STATUS, IF_CS_BIT_TX);
356 if_cs_write16(card, IF_CS_HOST_INT_CAUSE, IF_CS_BIT_TX);
357 if_cs_enable_ints(card);
359 lbs_deb_leave(LBS_DEB_CS);
363 * Get the command result out of the card.
365 static int if_cs_receive_cmdres(struct lbs_private *priv, u8 *data, u32 *len)
371 lbs_deb_enter(LBS_DEB_CS);
373 /* is hardware ready? */
374 status = if_cs_read16(priv->card, IF_CS_CARD_STATUS);
375 if ((status & IF_CS_BIT_RESP) == 0) {
376 lbs_pr_err("no cmd response in card\n");
381 *len = if_cs_read16(priv->card, IF_CS_CARD_CMD_LEN);
382 if ((*len == 0) || (*len > LBS_CMD_BUFFER_SIZE)) {
383 lbs_pr_err("card cmd buffer has invalid # of bytes (%d)\n", *len);
387 /* read even number of bytes, then odd byte if necessary */
388 if_cs_read16_rep(priv->card, IF_CS_CARD_CMD, data, *len/sizeof(u16));
390 data[*len-1] = if_cs_read8(priv->card, IF_CS_CARD_CMD);
392 /* This is a workaround for a firmware that reports too much
397 /* Clear this flag again */
398 spin_lock_irqsave(&priv->driver_lock, flags);
399 priv->dnld_sent = DNLD_RES_RECEIVED;
400 spin_unlock_irqrestore(&priv->driver_lock, flags);
403 lbs_deb_leave_args(LBS_DEB_CS, "ret %d, len %d", ret, *len);
407 static struct sk_buff *if_cs_receive_data(struct lbs_private *priv)
409 struct sk_buff *skb = NULL;
413 lbs_deb_enter(LBS_DEB_CS);
415 len = if_cs_read16(priv->card, IF_CS_READ_LEN);
416 if (len == 0 || len > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE) {
417 lbs_pr_err("card data buffer has invalid # of bytes (%d)\n", len);
418 priv->stats.rx_dropped++;
422 skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + 2);
426 skb_reserve(skb, 2);/* 16 byte align */
429 /* read even number of bytes, then odd byte if necessary */
430 if_cs_read16_rep(priv->card, IF_CS_READ, data, len/sizeof(u16));
432 data[len-1] = if_cs_read8(priv->card, IF_CS_READ);
435 if_cs_write16(priv->card, IF_CS_HOST_STATUS, IF_CS_BIT_RX);
436 if_cs_write16(priv->card, IF_CS_HOST_INT_CAUSE, IF_CS_BIT_RX);
439 lbs_deb_leave_args(LBS_DEB_CS, "ret %p", skb);
443 static irqreturn_t if_cs_interrupt(int irq, void *data)
445 struct if_cs_card *card = data;
446 struct lbs_private *priv = card->priv;
449 lbs_deb_enter(LBS_DEB_CS);
451 /* Ask card interrupt cause register if there is something for us */
452 cause = if_cs_read16(card, IF_CS_CARD_INT_CAUSE);
453 lbs_deb_cs("cause 0x%04x\n", cause);
460 if (cause == 0xffff) {
461 /* Read in junk, the card has probably been removed */
462 card->priv->surpriseremoved = 1;
466 if (cause & IF_CS_BIT_RX) {
468 lbs_deb_cs("rx packet\n");
469 skb = if_cs_receive_data(priv);
471 lbs_process_rxed_packet(priv, skb);
474 if (cause & IF_CS_BIT_TX) {
475 lbs_deb_cs("tx done\n");
476 lbs_host_to_card_done(priv);
479 if (cause & IF_CS_BIT_RESP) {
483 lbs_deb_cs("cmd resp\n");
484 spin_lock_irqsave(&priv->driver_lock, flags);
485 i = (priv->resp_idx == 0) ? 1 : 0;
486 spin_unlock_irqrestore(&priv->driver_lock, flags);
488 BUG_ON(priv->resp_len[i]);
489 if_cs_receive_cmdres(priv, priv->resp_buf[i],
492 spin_lock_irqsave(&priv->driver_lock, flags);
493 lbs_notify_command_response(priv, i);
494 spin_unlock_irqrestore(&priv->driver_lock, flags);
497 if (cause & IF_CS_BIT_EVENT) {
498 u16 event = if_cs_read16(priv->card, IF_CS_CARD_STATUS)
499 & IF_CS_CARD_STATUS_MASK;
500 if_cs_write16(priv->card, IF_CS_HOST_INT_CAUSE,
502 lbs_deb_cs("host event 0x%04x\n", event);
503 lbs_queue_event(priv, event >> 8 & 0xff);
506 /* Clear interrupt cause */
507 if_cs_write16(card, IF_CS_CARD_INT_CAUSE, cause & IF_CS_BIT_MASK);
509 lbs_deb_leave(LBS_DEB_CS);
516 /********************************************************************/
518 /********************************************************************/
521 * Tries to program the helper firmware.
523 * Return 0 on success
525 static int if_cs_prog_helper(struct if_cs_card *card)
530 const struct firmware *fw;
532 lbs_deb_enter(LBS_DEB_CS);
534 scratch = if_cs_read8(card, IF_CS_SCRATCH);
536 /* "If the value is 0x5a, the firmware is already
537 * downloaded successfully"
539 if (scratch == IF_CS_SCRATCH_HELPER_OK)
542 /* "If the value is != 00, it is invalid value of register */
543 if (scratch != IF_CS_SCRATCH_BOOT_OK) {
548 /* TODO: make firmware file configurable */
549 ret = request_firmware(&fw, "libertas_cs_helper.fw",
550 &handle_to_dev(card->p_dev));
552 lbs_pr_err("can't load helper firmware\n");
556 lbs_deb_cs("helper size %td\n", fw->size);
558 /* "Set the 5 bytes of the helper image to 0" */
559 /* Not needed, this contains an ARM branch instruction */
562 /* "the number of bytes to send is 256" */
564 int remain = fw->size - sent;
569 /* "write the number of bytes to be sent to the I/O Command
570 * write length register" */
571 if_cs_write16(card, IF_CS_HOST_CMD_LEN, count);
573 /* "write this to I/O Command port register as 16 bit writes */
575 if_cs_write16_rep(card, IF_CS_HOST_CMD,
579 /* "Assert the download over interrupt command in the Host
580 * status register" */
581 if_cs_write8(card, IF_CS_HOST_STATUS, IF_CS_BIT_COMMAND);
583 /* "Assert the download over interrupt command in the Card
584 * interrupt case register" */
585 if_cs_write16(card, IF_CS_HOST_INT_CAUSE, IF_CS_BIT_COMMAND);
587 /* "The host polls the Card Status register ... for 50 ms before
588 declaring a failure */
589 ret = if_cs_poll_while_fw_download(card, IF_CS_CARD_STATUS,
592 lbs_pr_err("can't download helper at 0x%x, ret %d\n",
603 release_firmware(fw);
607 lbs_deb_leave_args(LBS_DEB_CS, "ret %d", ret);
612 static int if_cs_prog_real(struct if_cs_card *card)
614 const struct firmware *fw;
620 lbs_deb_enter(LBS_DEB_CS);
622 /* TODO: make firmware file configurable */
623 ret = request_firmware(&fw, "libertas_cs.fw",
624 &handle_to_dev(card->p_dev));
626 lbs_pr_err("can't load firmware\n");
630 lbs_deb_cs("fw size %td\n", fw->size);
632 ret = if_cs_poll_while_fw_download(card, IF_CS_CARD_SQ_READ_LOW,
633 IF_CS_CARD_SQ_HELPER_OK);
635 lbs_pr_err("helper firmware doesn't answer\n");
639 for (sent = 0; sent < fw->size; sent += len) {
640 len = if_cs_read16(card, IF_CS_CARD_SQ_READ_LOW);
643 lbs_pr_info("odd, need to retry this firmware block\n");
649 lbs_pr_err("could not download firmware\n");
658 if_cs_write16(card, IF_CS_HOST_CMD_LEN, len);
660 if_cs_write16_rep(card, IF_CS_HOST_CMD,
663 if_cs_write8(card, IF_CS_HOST_STATUS, IF_CS_BIT_COMMAND);
664 if_cs_write16(card, IF_CS_HOST_INT_CAUSE, IF_CS_BIT_COMMAND);
666 ret = if_cs_poll_while_fw_download(card, IF_CS_CARD_STATUS,
669 lbs_pr_err("can't download firmware at 0x%x\n", sent);
674 ret = if_cs_poll_while_fw_download(card, IF_CS_SCRATCH, 0x5a);
676 lbs_pr_err("firmware download failed\n");
685 release_firmware(fw);
688 lbs_deb_leave_args(LBS_DEB_CS, "ret %d", ret);
694 /********************************************************************/
695 /* Callback functions for libertas.ko */
696 /********************************************************************/
698 /* Send commands or data packets to the card */
699 static int if_cs_host_to_card(struct lbs_private *priv,
706 lbs_deb_enter_args(LBS_DEB_CS, "type %d, bytes %d", type, nb);
710 priv->dnld_sent = DNLD_DATA_SENT;
711 if_cs_send_data(priv, buf, nb);
715 priv->dnld_sent = DNLD_CMD_SENT;
716 ret = if_cs_send_cmd(priv, buf, nb);
719 lbs_pr_err("%s: unsupported type %d\n", __FUNCTION__, type);
722 lbs_deb_leave_args(LBS_DEB_CS, "ret %d", ret);
727 /********************************************************************/
729 /********************************************************************/
732 * After a card is removed, if_cs_release() will unregister the
733 * device, and release the PCMCIA configuration. If the device is
734 * still open, this will be postponed until it is closed.
736 static void if_cs_release(struct pcmcia_device *p_dev)
738 struct if_cs_card *card = p_dev->priv;
740 lbs_deb_enter(LBS_DEB_CS);
742 free_irq(p_dev->irq.AssignedIRQ, card);
743 pcmcia_disable_device(p_dev);
745 ioport_unmap(card->iobase);
747 lbs_deb_leave(LBS_DEB_CS);
752 * This creates an "instance" of the driver, allocating local data
753 * structures for one device. The device is registered with Card
756 * The dev_link structure is initialized, but we don't actually
757 * configure the card at this point -- we wait until we receive a card
760 static int if_cs_probe(struct pcmcia_device *p_dev)
763 struct lbs_private *priv;
764 struct if_cs_card *card;
768 cistpl_cftable_entry_t *cfg = &parse.cftable_entry;
769 cistpl_io_t *io = &cfg->io;
772 lbs_deb_enter(LBS_DEB_CS);
774 card = kzalloc(sizeof(struct if_cs_card), GFP_KERNEL);
776 lbs_pr_err("error in kzalloc\n");
782 p_dev->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING;
783 p_dev->irq.Handler = NULL;
784 p_dev->irq.IRQInfo1 = IRQ_INFO2_VALID | IRQ_LEVEL_ID;
786 p_dev->conf.Attributes = 0;
787 p_dev->conf.IntType = INT_MEMORY_AND_IO;
789 tuple.Attributes = 0;
790 tuple.TupleData = buf;
791 tuple.TupleDataMax = sizeof(buf);
792 tuple.TupleOffset = 0;
794 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
795 if ((ret = pcmcia_get_first_tuple(p_dev, &tuple)) != 0 ||
796 (ret = pcmcia_get_tuple_data(p_dev, &tuple)) != 0 ||
797 (ret = pcmcia_parse_tuple(p_dev, &tuple, &parse)) != 0)
799 lbs_pr_err("error in pcmcia_get_first_tuple etc\n");
803 p_dev->conf.ConfigIndex = cfg->index;
805 /* Do we need to allocate an interrupt? */
806 if (cfg->irq.IRQInfo1) {
807 p_dev->conf.Attributes |= CONF_ENABLE_IRQ;
810 /* IO window settings */
811 if (cfg->io.nwin != 1) {
812 lbs_pr_err("wrong CIS (check number of IO windows)\n");
816 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
817 p_dev->io.BasePort1 = io->win[0].base;
818 p_dev->io.NumPorts1 = io->win[0].len;
820 /* This reserves IO space but doesn't actually enable it */
821 ret = pcmcia_request_io(p_dev, &p_dev->io);
823 lbs_pr_err("error in pcmcia_request_io\n");
828 * Allocate an interrupt line. Note that this does not assign
829 * a handler to the interrupt, unless the 'Handler' member of
830 * the irq structure is initialized.
832 if (p_dev->conf.Attributes & CONF_ENABLE_IRQ) {
833 ret = pcmcia_request_irq(p_dev, &p_dev->irq);
835 lbs_pr_err("error in pcmcia_request_irq\n");
840 /* Initialize io access */
841 card->iobase = ioport_map(p_dev->io.BasePort1, p_dev->io.NumPorts1);
843 lbs_pr_err("error in ioport_map\n");
849 * This actually configures the PCMCIA socket -- setting up
850 * the I/O windows and the interrupt mapping, and putting the
851 * card and host interface into "Memory and IO" mode.
853 ret = pcmcia_request_configuration(p_dev, &p_dev->conf);
855 lbs_pr_err("error in pcmcia_request_configuration\n");
859 /* Finally, report what we've done */
860 lbs_deb_cs("irq %d, io 0x%04x-0x%04x\n",
861 p_dev->irq.AssignedIRQ, p_dev->io.BasePort1,
862 p_dev->io.BasePort1 + p_dev->io.NumPorts1 - 1);
865 /* Load the firmware early, before calling into libertas.ko */
866 ret = if_cs_prog_helper(card);
868 ret = if_cs_prog_real(card);
872 /* Make this card known to the libertas driver */
873 priv = lbs_add_card(card, &p_dev->dev);
879 /* Finish setting up fields in lbs_private */
882 priv->hw_host_to_card = if_cs_host_to_card;
885 /* Now actually get the IRQ */
886 ret = request_irq(p_dev->irq.AssignedIRQ, if_cs_interrupt,
887 IRQF_SHARED, DRV_NAME, card);
889 lbs_pr_err("error in request_irq\n");
893 /* Clear any interrupt cause that happend while sending
894 * firmware/initializing card */
895 if_cs_write16(card, IF_CS_CARD_INT_CAUSE, IF_CS_BIT_MASK);
896 if_cs_enable_ints(card);
898 /* And finally bring the card up */
899 if (lbs_start_card(priv) != 0) {
900 lbs_pr_err("could not activate card\n");
904 /* The firmware for the CF card supports powersave */
905 priv->ps_supported = 1;
911 lbs_remove_card(priv);
913 ioport_unmap(card->iobase);
915 pcmcia_disable_device(p_dev);
917 lbs_deb_leave_args(LBS_DEB_CS, "ret %d", ret);
923 * This deletes a driver "instance". The device is de-registered with
924 * Card Services. If it has been released, all local data structures
925 * are freed. Otherwise, the structures will be freed when the device
928 static void if_cs_detach(struct pcmcia_device *p_dev)
930 struct if_cs_card *card = p_dev->priv;
932 lbs_deb_enter(LBS_DEB_CS);
934 lbs_stop_card(card->priv);
935 lbs_remove_card(card->priv);
936 if_cs_disable_ints(card);
937 if_cs_release(p_dev);
940 lbs_deb_leave(LBS_DEB_CS);
945 /********************************************************************/
946 /* Module initialization */
947 /********************************************************************/
949 static struct pcmcia_device_id if_cs_ids[] = {
950 PCMCIA_DEVICE_MANF_CARD(0x02df, 0x8103),
953 MODULE_DEVICE_TABLE(pcmcia, if_cs_ids);
956 static struct pcmcia_driver lbs_driver = {
957 .owner = THIS_MODULE,
961 .probe = if_cs_probe,
962 .remove = if_cs_detach,
963 .id_table = if_cs_ids,
967 static int __init if_cs_init(void)
971 lbs_deb_enter(LBS_DEB_CS);
972 ret = pcmcia_register_driver(&lbs_driver);
973 lbs_deb_leave(LBS_DEB_CS);
978 static void __exit if_cs_exit(void)
980 lbs_deb_enter(LBS_DEB_CS);
981 pcmcia_unregister_driver(&lbs_driver);
982 lbs_deb_leave(LBS_DEB_CS);
986 module_init(if_cs_init);
987 module_exit(if_cs_exit);