xref: /openbmc/linux/drivers/ata/pata_pcmcia.c (revision 25df73d9)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *   pata_pcmcia.c - PCMCIA PATA controller driver.
4  *   Copyright 2005-2006 Red Hat Inc, all rights reserved.
5  *   PCMCIA ident update Copyright 2006 Marcin Juszkiewicz
6  *						<openembedded@hrw.one.pl>
7  *
8  *   Heavily based upon ide-cs.c
9  *   The initial developer of the original code is David A. Hinds
10  *   <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
11  *   are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
12  */
13 
14 #include <linux/kernel.h>
15 #include <linux/module.h>
16 #include <linux/blkdev.h>
17 #include <linux/delay.h>
18 #include <linux/slab.h>
19 #include <scsi/scsi_host.h>
20 #include <linux/ata.h>
21 #include <linux/libata.h>
22 
23 #include <pcmcia/cistpl.h>
24 #include <pcmcia/ds.h>
25 #include <pcmcia/cisreg.h>
26 #include <pcmcia/ciscode.h>
27 
28 
29 #define DRV_NAME "pata_pcmcia"
30 #define DRV_VERSION "0.3.5"
31 
32 /**
33  *	pcmcia_set_mode	-	PCMCIA specific mode setup
34  *	@link: link
35  *	@r_failed_dev: Return pointer for failed device
36  *
37  *	Perform the tuning and setup of the devices and timings, which
38  *	for PCMCIA is the same as any other controller. We wrap it however
39  *	as we need to spot hardware with incorrect or missing master/slave
40  *	decode, which alas is embarrassingly common in the PC world
41  */
42 
pcmcia_set_mode(struct ata_link * link,struct ata_device ** r_failed_dev)43 static int pcmcia_set_mode(struct ata_link *link, struct ata_device **r_failed_dev)
44 {
45 	struct ata_device *master = &link->device[0];
46 	struct ata_device *slave = &link->device[1];
47 
48 	if (!ata_dev_enabled(master) || !ata_dev_enabled(slave))
49 		return ata_do_set_mode(link, r_failed_dev);
50 
51 	if (memcmp(master->id + ATA_ID_FW_REV,  slave->id + ATA_ID_FW_REV,
52 			   ATA_ID_FW_REV_LEN + ATA_ID_PROD_LEN) == 0) {
53 		/* Suspicious match, but could be two cards from
54 		   the same vendor - check serial */
55 		if (memcmp(master->id + ATA_ID_SERNO, slave->id + ATA_ID_SERNO,
56 			   ATA_ID_SERNO_LEN) == 0 && master->id[ATA_ID_SERNO] >> 8) {
57 			ata_dev_warn(slave, "is a ghost device, ignoring\n");
58 			ata_dev_disable(slave);
59 		}
60 	}
61 	return ata_do_set_mode(link, r_failed_dev);
62 }
63 
64 /**
65  *	pcmcia_set_mode_8bit	-	PCMCIA specific mode setup
66  *	@link: link
67  *	@r_failed_dev: Return pointer for failed device
68  *
69  *	For the simple emulated 8bit stuff the less we do the better.
70  */
71 
pcmcia_set_mode_8bit(struct ata_link * link,struct ata_device ** r_failed_dev)72 static int pcmcia_set_mode_8bit(struct ata_link *link,
73 				struct ata_device **r_failed_dev)
74 {
75 	return 0;
76 }
77 
78 /**
79  *	ata_data_xfer_8bit	 -	Transfer data by 8bit PIO
80  *	@qc: queued command
81  *	@buf: data buffer
82  *	@buflen: buffer length
83  *	@rw: read/write
84  *
85  *	Transfer data from/to the device data register by 8 bit PIO.
86  *
87  *	LOCKING:
88  *	Inherited from caller.
89  */
90 
ata_data_xfer_8bit(struct ata_queued_cmd * qc,unsigned char * buf,unsigned int buflen,int rw)91 static unsigned int ata_data_xfer_8bit(struct ata_queued_cmd *qc,
92 				unsigned char *buf, unsigned int buflen, int rw)
93 {
94 	struct ata_port *ap = qc->dev->link->ap;
95 
96 	if (rw == READ)
97 		ioread8_rep(ap->ioaddr.data_addr, buf, buflen);
98 	else
99 		iowrite8_rep(ap->ioaddr.data_addr, buf, buflen);
100 
101 	return buflen;
102 }
103 
104 /**
105  *	pcmcia_8bit_drain_fifo - Stock FIFO drain logic for SFF controllers
106  *	@qc: command
107  *
108  *	Drain the FIFO and device of any stuck data following a command
109  *	failing to complete. In some cases this is necessary before a
110  *	reset will recover the device.
111  *
112  */
113 
pcmcia_8bit_drain_fifo(struct ata_queued_cmd * qc)114 static void pcmcia_8bit_drain_fifo(struct ata_queued_cmd *qc)
115 {
116 	int count;
117 	struct ata_port *ap;
118 
119 	/* We only need to flush incoming data when a command was running */
120 	if (qc == NULL || qc->dma_dir == DMA_TO_DEVICE)
121 		return;
122 
123 	ap = qc->ap;
124 
125 	/* Drain up to 64K of data before we give up this recovery method */
126 	for (count = 0; (ap->ops->sff_check_status(ap) & ATA_DRQ)
127 							&& count++ < 65536;)
128 		ioread8(ap->ioaddr.data_addr);
129 
130 	if (count)
131 		ata_port_warn(ap, "drained %d bytes to clear DRQ\n", count);
132 
133 }
134 
135 static const struct scsi_host_template pcmcia_sht = {
136 	ATA_PIO_SHT(DRV_NAME),
137 };
138 
139 static struct ata_port_operations pcmcia_port_ops = {
140 	.inherits	= &ata_sff_port_ops,
141 	.sff_data_xfer	= ata_sff_data_xfer32,
142 	.cable_detect	= ata_cable_40wire,
143 	.set_mode	= pcmcia_set_mode,
144 };
145 
146 static struct ata_port_operations pcmcia_8bit_port_ops = {
147 	.inherits	= &ata_sff_port_ops,
148 	.sff_data_xfer	= ata_data_xfer_8bit,
149 	.cable_detect	= ata_cable_40wire,
150 	.set_mode	= pcmcia_set_mode_8bit,
151 	.sff_drain_fifo	= pcmcia_8bit_drain_fifo,
152 };
153 
154 
pcmcia_check_one_config(struct pcmcia_device * pdev,void * priv_data)155 static int pcmcia_check_one_config(struct pcmcia_device *pdev, void *priv_data)
156 {
157 	int *is_kme = priv_data;
158 
159 	if ((pdev->resource[0]->flags & IO_DATA_PATH_WIDTH)
160 	    != IO_DATA_PATH_WIDTH_8) {
161 		pdev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
162 		pdev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
163 	}
164 	pdev->resource[1]->flags &= ~IO_DATA_PATH_WIDTH;
165 	pdev->resource[1]->flags |= IO_DATA_PATH_WIDTH_8;
166 
167 	if (pdev->resource[1]->end) {
168 		pdev->resource[0]->end = 8;
169 		pdev->resource[1]->end = (*is_kme) ? 2 : 1;
170 	} else {
171 		if (pdev->resource[0]->end < 16)
172 			return -ENODEV;
173 	}
174 
175 	return pcmcia_request_io(pdev);
176 }
177 
178 /**
179  *	pcmcia_init_one		-	attach a PCMCIA interface
180  *	@pdev: pcmcia device
181  *
182  *	Register a PCMCIA IDE interface. Such interfaces are PIO 0 and
183  *	shared IRQ.
184  */
185 
pcmcia_init_one(struct pcmcia_device * pdev)186 static int pcmcia_init_one(struct pcmcia_device *pdev)
187 {
188 	struct ata_host *host;
189 	struct ata_port *ap;
190 	int is_kme = 0, ret = -ENOMEM, p;
191 	unsigned long io_base, ctl_base;
192 	void __iomem *io_addr, *ctl_addr;
193 	int n_ports = 1;
194 	struct ata_port_operations *ops = &pcmcia_port_ops;
195 
196 	/* Set up attributes in order to probe card and get resources */
197 	pdev->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO |
198 		CONF_AUTO_SET_VPP | CONF_AUTO_CHECK_VCC;
199 
200 	/* See if we have a manufacturer identifier. Use it to set is_kme for
201 	   vendor quirks */
202 	is_kme = ((pdev->manf_id == MANFID_KME) &&
203 		  ((pdev->card_id == PRODID_KME_KXLC005_A) ||
204 		   (pdev->card_id == PRODID_KME_KXLC005_B)));
205 
206 	if (pcmcia_loop_config(pdev, pcmcia_check_one_config, &is_kme)) {
207 		pdev->config_flags &= ~CONF_AUTO_CHECK_VCC;
208 		if (pcmcia_loop_config(pdev, pcmcia_check_one_config, &is_kme))
209 			goto failed; /* No suitable config found */
210 	}
211 	io_base = pdev->resource[0]->start;
212 	if (pdev->resource[1]->end)
213 		ctl_base = pdev->resource[1]->start;
214 	else
215 		ctl_base = pdev->resource[0]->start + 0x0e;
216 
217 	if (!pdev->irq)
218 		goto failed;
219 
220 	ret = pcmcia_enable_device(pdev);
221 	if (ret)
222 		goto failed;
223 
224 	/* iomap */
225 	ret = -ENOMEM;
226 	io_addr = devm_ioport_map(&pdev->dev, io_base, 8);
227 	ctl_addr = devm_ioport_map(&pdev->dev, ctl_base, 1);
228 	if (!io_addr || !ctl_addr)
229 		goto failed;
230 
231 	/* Success. Disable the IRQ nIEN line, do quirks */
232 	iowrite8(0x02, ctl_addr);
233 	if (is_kme)
234 		iowrite8(0x81, ctl_addr + 0x01);
235 
236 	/* FIXME: Could be more ports at base + 0x10 but we only deal with
237 	   one right now */
238 	if (resource_size(pdev->resource[0]) >= 0x20)
239 		n_ports = 2;
240 
241 	if (pdev->manf_id == 0x0097 && pdev->card_id == 0x1620)
242 		ops = &pcmcia_8bit_port_ops;
243 	/*
244 	 *	Having done the PCMCIA plumbing the ATA side is relatively
245 	 *	sane.
246 	 */
247 	ret = -ENOMEM;
248 	host = ata_host_alloc(&pdev->dev, n_ports);
249 	if (!host)
250 		goto failed;
251 
252 	for (p = 0; p < n_ports; p++) {
253 		ap = host->ports[p];
254 
255 		ap->ops = ops;
256 		ap->pio_mask = ATA_PIO0;	/* ISA so PIO 0 cycles */
257 		ap->flags |= ATA_FLAG_SLAVE_POSS;
258 		ap->ioaddr.cmd_addr = io_addr + 0x10 * p;
259 		ap->ioaddr.altstatus_addr = ctl_addr + 0x10 * p;
260 		ap->ioaddr.ctl_addr = ctl_addr + 0x10 * p;
261 		ata_sff_std_ports(&ap->ioaddr);
262 
263 		ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx", io_base, ctl_base);
264 	}
265 
266 	/* activate */
267 	ret = ata_host_activate(host, pdev->irq, ata_sff_interrupt,
268 				IRQF_SHARED, &pcmcia_sht);
269 	if (ret)
270 		goto failed;
271 
272 	pdev->priv = host;
273 	return 0;
274 
275 failed:
276 	pcmcia_disable_device(pdev);
277 	return ret;
278 }
279 
280 /**
281  *	pcmcia_remove_one	-	unplug an pcmcia interface
282  *	@pdev: pcmcia device
283  *
284  *	A PCMCIA ATA device has been unplugged. Perform the needed
285  *	cleanup. Also called on module unload for any active devices.
286  */
287 
pcmcia_remove_one(struct pcmcia_device * pdev)288 static void pcmcia_remove_one(struct pcmcia_device *pdev)
289 {
290 	struct ata_host *host = pdev->priv;
291 
292 	if (host)
293 		ata_host_detach(host);
294 
295 	pcmcia_disable_device(pdev);
296 }
297 
298 static const struct pcmcia_device_id pcmcia_devices[] = {
299 	PCMCIA_DEVICE_FUNC_ID(4),
300 	PCMCIA_DEVICE_MANF_CARD(0x0000, 0x0000),	/* Corsair */
301 	PCMCIA_DEVICE_MANF_CARD(0x0007, 0x0000),	/* Hitachi */
302 	PCMCIA_DEVICE_MANF_CARD(0x000a, 0x0000),	/* I-O Data CFA */
303 	PCMCIA_DEVICE_MANF_CARD(0x001c, 0x0001),	/* Mitsubishi CFA */
304 	PCMCIA_DEVICE_MANF_CARD(0x0032, 0x0704),
305 	PCMCIA_DEVICE_MANF_CARD(0x0032, 0x2904),
306 	PCMCIA_DEVICE_MANF_CARD(0x0045, 0x0401),	/* SanDisk CFA */
307 	PCMCIA_DEVICE_MANF_CARD(0x004f, 0x0000),	/* Kingston */
308 	PCMCIA_DEVICE_MANF_CARD(0x0097, 0x1620), 	/* TI emulated */
309 	PCMCIA_DEVICE_MANF_CARD(0x0098, 0x0000),	/* Toshiba */
310 	PCMCIA_DEVICE_MANF_CARD(0x00a4, 0x002d),
311 	PCMCIA_DEVICE_MANF_CARD(0x00ce, 0x0000),	/* Samsung */
312 	PCMCIA_DEVICE_MANF_CARD(0x00f1, 0x0101),	/* SanDisk High (>8G) CFA */
313 	PCMCIA_DEVICE_MANF_CARD(0x0319, 0x0000),	/* Hitachi */
314 	PCMCIA_DEVICE_MANF_CARD(0x2080, 0x0001),
315 	PCMCIA_DEVICE_MANF_CARD(0x4e01, 0x0100),	/* Viking CFA */
316 	PCMCIA_DEVICE_MANF_CARD(0x4e01, 0x0200),	/* Lexar, Viking CFA */
317 	PCMCIA_DEVICE_PROD_ID123("Caravelle", "PSC-IDE ", "PSC000", 0x8c36137c, 0xd0693ab8, 0x2768a9f0),
318 	PCMCIA_DEVICE_PROD_ID123("CDROM", "IDE", "MCD-601p", 0x1b9179ca, 0xede88951, 0x0d902f74),
319 	PCMCIA_DEVICE_PROD_ID123("PCMCIA", "IDE CARD", "F1", 0x281f1c5d, 0x1907960c, 0xf7fde8b9),
320 	PCMCIA_DEVICE_PROD_ID12("ARGOSY", "CD-ROM", 0x78f308dc, 0x66536591),
321 	PCMCIA_DEVICE_PROD_ID12("ARGOSY", "PnPIDE", 0x78f308dc, 0x0c694728),
322 	PCMCIA_DEVICE_PROD_ID12("CNF   ", "CD-ROM", 0x46d7db81, 0x66536591),
323 	PCMCIA_DEVICE_PROD_ID12("CNF CD-M", "CD-ROM", 0x7d93b852, 0x66536591),
324 	PCMCIA_DEVICE_PROD_ID12("Creative Technology Ltd.", "PCMCIA CD-ROM Interface Card", 0xff8c8a45, 0xfe8020c4),
325 	PCMCIA_DEVICE_PROD_ID12("Digital Equipment Corporation.", "Digital Mobile Media CD-ROM", 0x17692a66, 0xef1dcbde),
326 	PCMCIA_DEVICE_PROD_ID12("EXP", "CD+GAME", 0x6f58c983, 0x63c13aaf),
327 	PCMCIA_DEVICE_PROD_ID12("EXP   ", "CD-ROM", 0x0a5c52fd, 0x66536591),
328 	PCMCIA_DEVICE_PROD_ID12("EXP   ", "PnPIDE", 0x0a5c52fd, 0x0c694728),
329 	PCMCIA_DEVICE_PROD_ID12("FREECOM", "PCCARD-IDE", 0x5714cbf7, 0x48e0ab8e),
330 	PCMCIA_DEVICE_PROD_ID12("HITACHI", "FLASH", 0xf4f43949, 0x9eb86aae),
331 	PCMCIA_DEVICE_PROD_ID12("HITACHI", "microdrive", 0xf4f43949, 0xa6d76178),
332 	PCMCIA_DEVICE_PROD_ID12("Hyperstone", "Model1", 0x3d5b9ef5, 0xca6ab420),
333 	PCMCIA_DEVICE_PROD_ID12("IBM", "microdrive", 0xb569a6e5, 0xa6d76178),
334 	PCMCIA_DEVICE_PROD_ID12("IBM", "IBM17JSSFP20", 0xb569a6e5, 0xf2508753),
335 	PCMCIA_DEVICE_PROD_ID12("KINGSTON", "CF CARD 1GB", 0x2e6d1829, 0x55d5bffb),
336 	PCMCIA_DEVICE_PROD_ID12("KINGSTON", "CF CARD 4GB", 0x2e6d1829, 0x531e7d10),
337 	PCMCIA_DEVICE_PROD_ID12("KINGSTON", "CF8GB", 0x2e6d1829, 0xacbe682e),
338 	PCMCIA_DEVICE_PROD_ID12("IO DATA", "CBIDE2      ", 0x547e66dc, 0x8671043b),
339 	PCMCIA_DEVICE_PROD_ID12("IO DATA", "PCIDE", 0x547e66dc, 0x5c5ab149),
340 	PCMCIA_DEVICE_PROD_ID12("IO DATA", "PCIDEII", 0x547e66dc, 0xb3662674),
341 	PCMCIA_DEVICE_PROD_ID12("LOOKMEET", "CBIDE2      ", 0xe37be2b5, 0x8671043b),
342 	PCMCIA_DEVICE_PROD_ID12("M-Systems", "CF300", 0x7ed2ad87, 0x7e9e78ee),
343 	PCMCIA_DEVICE_PROD_ID12("M-Systems", "CF500", 0x7ed2ad87, 0x7a13045c),
344 	PCMCIA_DEVICE_PROD_ID2("NinjaATA-", 0xebe0bd79),
345 	PCMCIA_DEVICE_PROD_ID12("PCMCIA", "CD-ROM", 0x281f1c5d, 0x66536591),
346 	PCMCIA_DEVICE_PROD_ID12("PCMCIA", "PnPIDE", 0x281f1c5d, 0x0c694728),
347 	PCMCIA_DEVICE_PROD_ID12("SHUTTLE TECHNOLOGY LTD.", "PCCARD-IDE/ATAPI Adapter", 0x4a3f0ba0, 0x322560e1),
348 	PCMCIA_DEVICE_PROD_ID12("SEAGATE", "ST1", 0x87c1b330, 0xe1f30883),
349 	PCMCIA_DEVICE_PROD_ID12("SAMSUNG", "04/05/06", 0x43d74cb4, 0x6a22777d),
350 	PCMCIA_DEVICE_PROD_ID12("SMI VENDOR", "SMI PRODUCT", 0x30896c92, 0x703cc5f6),
351 	PCMCIA_DEVICE_PROD_ID12("TOSHIBA", "MK2001MPL", 0xb4585a1a, 0x3489e003),
352 	PCMCIA_DEVICE_PROD_ID1("TRANSCEND    512M   ", 0xd0909443),
353 	PCMCIA_DEVICE_PROD_ID12("TRANSCEND", "TS1GCF45", 0x709b1bf1, 0xf68b6f32),
354 	PCMCIA_DEVICE_PROD_ID12("TRANSCEND", "TS1GCF80", 0x709b1bf1, 0x2a54d4b1),
355 	PCMCIA_DEVICE_PROD_ID12("TRANSCEND", "TS2GCF120", 0x709b1bf1, 0x969aa4f2),
356 	PCMCIA_DEVICE_PROD_ID12("TRANSCEND", "TS4GCF120", 0x709b1bf1, 0xf54a91c8),
357 	PCMCIA_DEVICE_PROD_ID12("TRANSCEND", "TS4GCF133", 0x709b1bf1, 0x7558f133),
358 	PCMCIA_DEVICE_PROD_ID12("TRANSCEND", "TS8GCF133", 0x709b1bf1, 0xb2f89b47),
359 	PCMCIA_DEVICE_PROD_ID12("WIT", "IDE16", 0x244e5994, 0x3e232852),
360 	PCMCIA_DEVICE_PROD_ID12("WEIDA", "TWTTI", 0xcc7cf69c, 0x212bb918),
361 	PCMCIA_DEVICE_PROD_ID1("STI Flash", 0xe4a13209),
362 	PCMCIA_DEVICE_PROD_ID12("STI", "Flash 5.0", 0xbf2df18d, 0x8cb57a0e),
363 	PCMCIA_MFC_DEVICE_PROD_ID12(1, "SanDisk", "ConnectPlus", 0x7a954bd9, 0x74be00c6),
364 	PCMCIA_DEVICE_PROD_ID2("Flash Card", 0x5a362506),
365 	PCMCIA_DEVICE_NULL,
366 };
367 
368 MODULE_DEVICE_TABLE(pcmcia, pcmcia_devices);
369 
370 static struct pcmcia_driver pcmcia_driver = {
371 	.owner		= THIS_MODULE,
372 	.name		= DRV_NAME,
373 	.id_table	= pcmcia_devices,
374 	.probe		= pcmcia_init_one,
375 	.remove		= pcmcia_remove_one,
376 };
377 module_pcmcia_driver(pcmcia_driver);
378 
379 MODULE_AUTHOR("Alan Cox");
380 MODULE_DESCRIPTION("low-level driver for PCMCIA ATA");
381 MODULE_LICENSE("GPL");
382 MODULE_VERSION(DRV_VERSION);
383