xref: /openbmc/linux/drivers/ata/pata_pcmcia.c (revision b6dcefde)
1 /*
2  *   pata_pcmcia.c - PCMCIA PATA controller driver.
3  *   Copyright 2005-2006 Red Hat Inc, all rights reserved.
4  *   PCMCIA ident update Copyright 2006 Marcin Juszkiewicz
5  *						<openembedded@hrw.one.pl>
6  *
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, or (at your option)
10  *  any later version.
11  *
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.
16  *
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, 675 Mass Ave, Cambridge, MA 02139, USA.
20  *
21  *   Heavily based upon ide-cs.c
22  *   The initial developer of the original code is David A. Hinds
23  *   <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
24  *   are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
25  */
26 
27 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <linux/blkdev.h>
31 #include <linux/delay.h>
32 #include <scsi/scsi_host.h>
33 #include <linux/ata.h>
34 #include <linux/libata.h>
35 
36 #include <pcmcia/cs_types.h>
37 #include <pcmcia/cs.h>
38 #include <pcmcia/cistpl.h>
39 #include <pcmcia/ds.h>
40 #include <pcmcia/cisreg.h>
41 #include <pcmcia/ciscode.h>
42 
43 
44 #define DRV_NAME "pata_pcmcia"
45 #define DRV_VERSION "0.3.5"
46 
47 /*
48  *	Private data structure to glue stuff together
49  */
50 
51 struct ata_pcmcia_info {
52 	struct pcmcia_device *pdev;
53 	int		ndev;
54 	dev_node_t	node;
55 };
56 
57 /**
58  *	pcmcia_set_mode	-	PCMCIA specific mode setup
59  *	@link: link
60  *	@r_failed_dev: Return pointer for failed device
61  *
62  *	Perform the tuning and setup of the devices and timings, which
63  *	for PCMCIA is the same as any other controller. We wrap it however
64  *	as we need to spot hardware with incorrect or missing master/slave
65  *	decode, which alas is embarrassingly common in the PC world
66  */
67 
68 static int pcmcia_set_mode(struct ata_link *link, struct ata_device **r_failed_dev)
69 {
70 	struct ata_device *master = &link->device[0];
71 	struct ata_device *slave = &link->device[1];
72 
73 	if (!ata_dev_enabled(master) || !ata_dev_enabled(slave))
74 		return ata_do_set_mode(link, r_failed_dev);
75 
76 	if (memcmp(master->id + ATA_ID_FW_REV,  slave->id + ATA_ID_FW_REV,
77 			   ATA_ID_FW_REV_LEN + ATA_ID_PROD_LEN) == 0) {
78 		/* Suspicious match, but could be two cards from
79 		   the same vendor - check serial */
80 		if (memcmp(master->id + ATA_ID_SERNO, slave->id + ATA_ID_SERNO,
81 			   ATA_ID_SERNO_LEN) == 0 && master->id[ATA_ID_SERNO] >> 8) {
82 			ata_dev_printk(slave, KERN_WARNING, "is a ghost device, ignoring.\n");
83 			ata_dev_disable(slave);
84 		}
85 	}
86 	return ata_do_set_mode(link, r_failed_dev);
87 }
88 
89 /**
90  *	pcmcia_set_mode_8bit	-	PCMCIA specific mode setup
91  *	@link: link
92  *	@r_failed_dev: Return pointer for failed device
93  *
94  *	For the simple emulated 8bit stuff the less we do the better.
95  */
96 
97 static int pcmcia_set_mode_8bit(struct ata_link *link,
98 				struct ata_device **r_failed_dev)
99 {
100 	return 0;
101 }
102 
103 /**
104  *	ata_data_xfer_8bit	 -	Transfer data by 8bit PIO
105  *	@dev: device to target
106  *	@buf: data buffer
107  *	@buflen: buffer length
108  *	@rw: read/write
109  *
110  *	Transfer data from/to the device data register by 8 bit PIO.
111  *
112  *	LOCKING:
113  *	Inherited from caller.
114  */
115 
116 static unsigned int ata_data_xfer_8bit(struct ata_device *dev,
117 				unsigned char *buf, unsigned int buflen, int rw)
118 {
119 	struct ata_port *ap = dev->link->ap;
120 
121 	if (rw == READ)
122 		ioread8_rep(ap->ioaddr.data_addr, buf, buflen);
123 	else
124 		iowrite8_rep(ap->ioaddr.data_addr, buf, buflen);
125 
126 	return buflen;
127 }
128 
129 /**
130  *	pcmcia_8bit_drain_fifo - Stock FIFO drain logic for SFF controllers
131  *	@qc: command
132  *
133  *	Drain the FIFO and device of any stuck data following a command
134  *	failing to complete. In some cases this is neccessary before a
135  *	reset will recover the device.
136  *
137  */
138 
139 void pcmcia_8bit_drain_fifo(struct ata_queued_cmd *qc)
140 {
141 	int count;
142 	struct ata_port *ap;
143 
144 	/* We only need to flush incoming data when a command was running */
145 	if (qc == NULL || qc->dma_dir == DMA_TO_DEVICE)
146 		return;
147 
148 	ap = qc->ap;
149 
150 	/* Drain up to 64K of data before we give up this recovery method */
151 	for (count = 0; (ap->ops->sff_check_status(ap) & ATA_DRQ)
152 							&& count++ < 65536;)
153 		ioread8(ap->ioaddr.data_addr);
154 
155 	if (count)
156 		ata_port_printk(ap, KERN_WARNING, "drained %d bytes to clear DRQ.\n",
157 								count);
158 
159 }
160 
161 static struct scsi_host_template pcmcia_sht = {
162 	ATA_PIO_SHT(DRV_NAME),
163 };
164 
165 static struct ata_port_operations pcmcia_port_ops = {
166 	.inherits	= &ata_sff_port_ops,
167 	.sff_data_xfer	= ata_sff_data_xfer_noirq,
168 	.cable_detect	= ata_cable_40wire,
169 	.set_mode	= pcmcia_set_mode,
170 };
171 
172 static struct ata_port_operations pcmcia_8bit_port_ops = {
173 	.inherits	= &ata_sff_port_ops,
174 	.sff_data_xfer	= ata_data_xfer_8bit,
175 	.cable_detect	= ata_cable_40wire,
176 	.set_mode	= pcmcia_set_mode_8bit,
177 	.drain_fifo	= pcmcia_8bit_drain_fifo,
178 };
179 
180 
181 struct pcmcia_config_check {
182 	unsigned long ctl_base;
183 	int skip_vcc;
184 	int is_kme;
185 };
186 
187 static int pcmcia_check_one_config(struct pcmcia_device *pdev,
188 				   cistpl_cftable_entry_t *cfg,
189 				   cistpl_cftable_entry_t *dflt,
190 				   unsigned int vcc,
191 				   void *priv_data)
192 {
193 	struct pcmcia_config_check *stk = priv_data;
194 
195 	/* Check for matching Vcc, unless we're desperate */
196 	if (!stk->skip_vcc) {
197 		if (cfg->vcc.present & (1 << CISTPL_POWER_VNOM)) {
198 			if (vcc != cfg->vcc.param[CISTPL_POWER_VNOM] / 10000)
199 				return -ENODEV;
200 		} else if (dflt->vcc.present & (1 << CISTPL_POWER_VNOM)) {
201 			if (vcc != dflt->vcc.param[CISTPL_POWER_VNOM] / 10000)
202 				return -ENODEV;
203 		}
204 	}
205 
206 	if (cfg->vpp1.present & (1 << CISTPL_POWER_VNOM))
207 		pdev->conf.Vpp = cfg->vpp1.param[CISTPL_POWER_VNOM] / 10000;
208 	else if (dflt->vpp1.present & (1 << CISTPL_POWER_VNOM))
209 		pdev->conf.Vpp = dflt->vpp1.param[CISTPL_POWER_VNOM] / 10000;
210 
211 	if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) {
212 		cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io;
213 		pdev->io.BasePort1 = io->win[0].base;
214 		pdev->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
215 		if (!(io->flags & CISTPL_IO_16BIT))
216 			pdev->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
217 		if (io->nwin == 2) {
218 			pdev->io.NumPorts1 = 8;
219 			pdev->io.BasePort2 = io->win[1].base;
220 			pdev->io.NumPorts2 = (stk->is_kme) ? 2 : 1;
221 			if (pcmcia_request_io(pdev, &pdev->io) != 0)
222 				return -ENODEV;
223 			stk->ctl_base = pdev->io.BasePort2;
224 		} else if ((io->nwin == 1) && (io->win[0].len >= 16)) {
225 			pdev->io.NumPorts1 = io->win[0].len;
226 			pdev->io.NumPorts2 = 0;
227 			if (pcmcia_request_io(pdev, &pdev->io) != 0)
228 				return -ENODEV;
229 			stk->ctl_base = pdev->io.BasePort1 + 0x0e;
230 		} else
231 			return -ENODEV;
232 		/* If we've got this far, we're done */
233 		return 0;
234 	}
235 	return -ENODEV;
236 }
237 
238 /**
239  *	pcmcia_init_one		-	attach a PCMCIA interface
240  *	@pdev: pcmcia device
241  *
242  *	Register a PCMCIA IDE interface. Such interfaces are PIO 0 and
243  *	shared IRQ.
244  */
245 
246 static int pcmcia_init_one(struct pcmcia_device *pdev)
247 {
248 	struct ata_host *host;
249 	struct ata_port *ap;
250 	struct ata_pcmcia_info *info;
251 	struct pcmcia_config_check *stk = NULL;
252 	int is_kme = 0, ret = -ENOMEM, p;
253 	unsigned long io_base, ctl_base;
254 	void __iomem *io_addr, *ctl_addr;
255 	int n_ports = 1;
256 	struct ata_port_operations *ops = &pcmcia_port_ops;
257 
258 	info = kzalloc(sizeof(*info), GFP_KERNEL);
259 	if (info == NULL)
260 		return -ENOMEM;
261 
262 	/* Glue stuff together. FIXME: We may be able to get rid of info with care */
263 	info->pdev = pdev;
264 	pdev->priv = info;
265 
266 	/* Set up attributes in order to probe card and get resources */
267 	pdev->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
268 	pdev->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
269 	pdev->io.IOAddrLines = 3;
270 	pdev->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING;
271 	pdev->conf.Attributes = CONF_ENABLE_IRQ;
272 	pdev->conf.IntType = INT_MEMORY_AND_IO;
273 
274 	/* See if we have a manufacturer identifier. Use it to set is_kme for
275 	   vendor quirks */
276 	is_kme = ((pdev->manf_id == MANFID_KME) &&
277 		  ((pdev->card_id == PRODID_KME_KXLC005_A) ||
278 		   (pdev->card_id == PRODID_KME_KXLC005_B)));
279 
280 	/* Allocate resoure probing structures */
281 
282 	stk = kzalloc(sizeof(*stk), GFP_KERNEL);
283 	if (!stk)
284 		goto out1;
285 	stk->is_kme = is_kme;
286 	stk->skip_vcc = io_base = ctl_base = 0;
287 
288 	if (pcmcia_loop_config(pdev, pcmcia_check_one_config, stk)) {
289 		stk->skip_vcc = 1;
290 		if (pcmcia_loop_config(pdev, pcmcia_check_one_config, stk))
291 			goto failed; /* No suitable config found */
292 	}
293 	io_base = pdev->io.BasePort1;
294 	ctl_base = stk->ctl_base;
295 	ret = pcmcia_request_irq(pdev, &pdev->irq);
296 	if (ret)
297 		goto failed;
298 
299 	ret = pcmcia_request_configuration(pdev, &pdev->conf);
300 	if (ret)
301 		goto failed;
302 
303 	/* iomap */
304 	ret = -ENOMEM;
305 	io_addr = devm_ioport_map(&pdev->dev, io_base, 8);
306 	ctl_addr = devm_ioport_map(&pdev->dev, ctl_base, 1);
307 	if (!io_addr || !ctl_addr)
308 		goto failed;
309 
310 	/* Success. Disable the IRQ nIEN line, do quirks */
311 	iowrite8(0x02, ctl_addr);
312 	if (is_kme)
313 		iowrite8(0x81, ctl_addr + 0x01);
314 
315 	/* FIXME: Could be more ports at base + 0x10 but we only deal with
316 	   one right now */
317 	if (pdev->io.NumPorts1 >= 0x20)
318 		n_ports = 2;
319 
320 	if (pdev->manf_id == 0x0097 && pdev->card_id == 0x1620)
321 		ops = &pcmcia_8bit_port_ops;
322 	/*
323 	 *	Having done the PCMCIA plumbing the ATA side is relatively
324 	 *	sane.
325 	 */
326 	ret = -ENOMEM;
327 	host = ata_host_alloc(&pdev->dev, n_ports);
328 	if (!host)
329 		goto failed;
330 
331 	for (p = 0; p < n_ports; p++) {
332 		ap = host->ports[p];
333 
334 		ap->ops = ops;
335 		ap->pio_mask = ATA_PIO0;	/* ISA so PIO 0 cycles */
336 		ap->flags |= ATA_FLAG_SLAVE_POSS;
337 		ap->ioaddr.cmd_addr = io_addr + 0x10 * p;
338 		ap->ioaddr.altstatus_addr = ctl_addr + 0x10 * p;
339 		ap->ioaddr.ctl_addr = ctl_addr + 0x10 * p;
340 		ata_sff_std_ports(&ap->ioaddr);
341 
342 		ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx", io_base, ctl_base);
343 	}
344 
345 	/* activate */
346 	ret = ata_host_activate(host, pdev->irq.AssignedIRQ, ata_sff_interrupt,
347 				IRQF_SHARED, &pcmcia_sht);
348 	if (ret)
349 		goto failed;
350 
351 	info->ndev = 1;
352 	kfree(stk);
353 	return 0;
354 
355 failed:
356 	kfree(stk);
357 	info->ndev = 0;
358 	pcmcia_disable_device(pdev);
359 out1:
360 	kfree(info);
361 	return ret;
362 }
363 
364 /**
365  *	pcmcia_remove_one	-	unplug an pcmcia interface
366  *	@pdev: pcmcia device
367  *
368  *	A PCMCIA ATA device has been unplugged. Perform the needed
369  *	cleanup. Also called on module unload for any active devices.
370  */
371 
372 static void pcmcia_remove_one(struct pcmcia_device *pdev)
373 {
374 	struct ata_pcmcia_info *info = pdev->priv;
375 	struct device *dev = &pdev->dev;
376 
377 	if (info != NULL) {
378 		/* If we have attached the device to the ATA layer, detach it */
379 		if (info->ndev) {
380 			struct ata_host *host = dev_get_drvdata(dev);
381 			ata_host_detach(host);
382 		}
383 		info->ndev = 0;
384 		pdev->priv = NULL;
385 	}
386 	pcmcia_disable_device(pdev);
387 	kfree(info);
388 }
389 
390 static struct pcmcia_device_id pcmcia_devices[] = {
391 	PCMCIA_DEVICE_FUNC_ID(4),
392 	PCMCIA_DEVICE_MANF_CARD(0x0000, 0x0000),	/* Corsair */
393 	PCMCIA_DEVICE_MANF_CARD(0x0007, 0x0000),	/* Hitachi */
394 	PCMCIA_DEVICE_MANF_CARD(0x000a, 0x0000),	/* I-O Data CFA */
395 	PCMCIA_DEVICE_MANF_CARD(0x001c, 0x0001),	/* Mitsubishi CFA */
396 	PCMCIA_DEVICE_MANF_CARD(0x0032, 0x0704),
397 	PCMCIA_DEVICE_MANF_CARD(0x0032, 0x2904),
398 	PCMCIA_DEVICE_MANF_CARD(0x0045, 0x0401),	/* SanDisk CFA */
399 	PCMCIA_DEVICE_MANF_CARD(0x004f, 0x0000),	/* Kingston */
400 	PCMCIA_DEVICE_MANF_CARD(0x0097, 0x1620), 	/* TI emulated */
401 	PCMCIA_DEVICE_MANF_CARD(0x0098, 0x0000),	/* Toshiba */
402 	PCMCIA_DEVICE_MANF_CARD(0x00a4, 0x002d),
403 	PCMCIA_DEVICE_MANF_CARD(0x00ce, 0x0000),	/* Samsung */
404 	PCMCIA_DEVICE_MANF_CARD(0x0319, 0x0000),	/* Hitachi */
405 	PCMCIA_DEVICE_MANF_CARD(0x2080, 0x0001),
406 	PCMCIA_DEVICE_MANF_CARD(0x4e01, 0x0100),	/* Viking CFA */
407 	PCMCIA_DEVICE_MANF_CARD(0x4e01, 0x0200),	/* Lexar, Viking CFA */
408 	PCMCIA_DEVICE_PROD_ID123("Caravelle", "PSC-IDE ", "PSC000", 0x8c36137c, 0xd0693ab8, 0x2768a9f0),
409 	PCMCIA_DEVICE_PROD_ID123("CDROM", "IDE", "MCD-601p", 0x1b9179ca, 0xede88951, 0x0d902f74),
410 	PCMCIA_DEVICE_PROD_ID123("PCMCIA", "IDE CARD", "F1", 0x281f1c5d, 0x1907960c, 0xf7fde8b9),
411 	PCMCIA_DEVICE_PROD_ID12("ARGOSY", "CD-ROM", 0x78f308dc, 0x66536591),
412 	PCMCIA_DEVICE_PROD_ID12("ARGOSY", "PnPIDE", 0x78f308dc, 0x0c694728),
413 	PCMCIA_DEVICE_PROD_ID12("CNF   ", "CD-ROM", 0x46d7db81, 0x66536591),
414 	PCMCIA_DEVICE_PROD_ID12("CNF CD-M", "CD-ROM", 0x7d93b852, 0x66536591),
415 	PCMCIA_DEVICE_PROD_ID12("Creative Technology Ltd.", "PCMCIA CD-ROM Interface Card", 0xff8c8a45, 0xfe8020c4),
416 	PCMCIA_DEVICE_PROD_ID12("Digital Equipment Corporation.", "Digital Mobile Media CD-ROM", 0x17692a66, 0xef1dcbde),
417 	PCMCIA_DEVICE_PROD_ID12("EXP", "CD+GAME", 0x6f58c983, 0x63c13aaf),
418 	PCMCIA_DEVICE_PROD_ID12("EXP   ", "CD-ROM", 0x0a5c52fd, 0x66536591),
419 	PCMCIA_DEVICE_PROD_ID12("EXP   ", "PnPIDE", 0x0a5c52fd, 0x0c694728),
420 	PCMCIA_DEVICE_PROD_ID12("FREECOM", "PCCARD-IDE", 0x5714cbf7, 0x48e0ab8e),
421 	PCMCIA_DEVICE_PROD_ID12("HITACHI", "FLASH", 0xf4f43949, 0x9eb86aae),
422 	PCMCIA_DEVICE_PROD_ID12("HITACHI", "microdrive", 0xf4f43949, 0xa6d76178),
423 	PCMCIA_DEVICE_PROD_ID12("Hyperstone", "Model1", 0x3d5b9ef5, 0xca6ab420),
424 	PCMCIA_DEVICE_PROD_ID12("IBM", "microdrive", 0xb569a6e5, 0xa6d76178),
425 	PCMCIA_DEVICE_PROD_ID12("IBM", "IBM17JSSFP20", 0xb569a6e5, 0xf2508753),
426 	PCMCIA_DEVICE_PROD_ID12("KINGSTON", "CF8GB", 0x2e6d1829, 0xacbe682e),
427 	PCMCIA_DEVICE_PROD_ID12("IO DATA", "CBIDE2      ", 0x547e66dc, 0x8671043b),
428 	PCMCIA_DEVICE_PROD_ID12("IO DATA", "PCIDE", 0x547e66dc, 0x5c5ab149),
429 	PCMCIA_DEVICE_PROD_ID12("IO DATA", "PCIDEII", 0x547e66dc, 0xb3662674),
430 	PCMCIA_DEVICE_PROD_ID12("LOOKMEET", "CBIDE2      ", 0xe37be2b5, 0x8671043b),
431 	PCMCIA_DEVICE_PROD_ID12("M-Systems", "CF300", 0x7ed2ad87, 0x7e9e78ee),
432 	PCMCIA_DEVICE_PROD_ID12("M-Systems", "CF500", 0x7ed2ad87, 0x7a13045c),
433 	PCMCIA_DEVICE_PROD_ID2("NinjaATA-", 0xebe0bd79),
434 	PCMCIA_DEVICE_PROD_ID12("PCMCIA", "CD-ROM", 0x281f1c5d, 0x66536591),
435 	PCMCIA_DEVICE_PROD_ID12("PCMCIA", "PnPIDE", 0x281f1c5d, 0x0c694728),
436 	PCMCIA_DEVICE_PROD_ID12("SHUTTLE TECHNOLOGY LTD.", "PCCARD-IDE/ATAPI Adapter", 0x4a3f0ba0, 0x322560e1),
437 	PCMCIA_DEVICE_PROD_ID12("SEAGATE", "ST1", 0x87c1b330, 0xe1f30883),
438 	PCMCIA_DEVICE_PROD_ID12("SAMSUNG", "04/05/06", 0x43d74cb4, 0x6a22777d),
439 	PCMCIA_DEVICE_PROD_ID12("SMI VENDOR", "SMI PRODUCT", 0x30896c92, 0x703cc5f6),
440 	PCMCIA_DEVICE_PROD_ID12("TOSHIBA", "MK2001MPL", 0xb4585a1a, 0x3489e003),
441 	PCMCIA_DEVICE_PROD_ID1("TRANSCEND    512M   ", 0xd0909443),
442 	PCMCIA_DEVICE_PROD_ID12("TRANSCEND", "TS1GCF45", 0x709b1bf1, 0xf68b6f32),
443 	PCMCIA_DEVICE_PROD_ID12("TRANSCEND", "TS1GCF80", 0x709b1bf1, 0x2a54d4b1),
444 	PCMCIA_DEVICE_PROD_ID12("TRANSCEND", "TS2GCF120", 0x709b1bf1, 0x969aa4f2),
445 	PCMCIA_DEVICE_PROD_ID12("TRANSCEND", "TS4GCF120", 0x709b1bf1, 0xf54a91c8),
446 	PCMCIA_DEVICE_PROD_ID12("WIT", "IDE16", 0x244e5994, 0x3e232852),
447 	PCMCIA_DEVICE_PROD_ID12("WEIDA", "TWTTI", 0xcc7cf69c, 0x212bb918),
448 	PCMCIA_DEVICE_PROD_ID1("STI Flash", 0xe4a13209),
449 	PCMCIA_DEVICE_PROD_ID12("STI", "Flash 5.0", 0xbf2df18d, 0x8cb57a0e),
450 	PCMCIA_MFC_DEVICE_PROD_ID12(1, "SanDisk", "ConnectPlus", 0x7a954bd9, 0x74be00c6),
451 	PCMCIA_DEVICE_PROD_ID2("Flash Card", 0x5a362506),
452 	PCMCIA_DEVICE_NULL,
453 };
454 
455 MODULE_DEVICE_TABLE(pcmcia, pcmcia_devices);
456 
457 static struct pcmcia_driver pcmcia_driver = {
458 	.owner		= THIS_MODULE,
459 	.drv = {
460 		.name		= DRV_NAME,
461 	},
462 	.id_table	= pcmcia_devices,
463 	.probe		= pcmcia_init_one,
464 	.remove		= pcmcia_remove_one,
465 };
466 
467 static int __init pcmcia_init(void)
468 {
469 	return pcmcia_register_driver(&pcmcia_driver);
470 }
471 
472 static void __exit pcmcia_exit(void)
473 {
474 	pcmcia_unregister_driver(&pcmcia_driver);
475 }
476 
477 MODULE_AUTHOR("Alan Cox");
478 MODULE_DESCRIPTION("low-level driver for PCMCIA ATA");
479 MODULE_LICENSE("GPL");
480 MODULE_VERSION(DRV_VERSION);
481 
482 module_init(pcmcia_init);
483 module_exit(pcmcia_exit);
484