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c6de2b64 DB |
1 | /* |
2 | * PCMCIA driver for SL811HS (as found in REX-CFU1U) | |
3 | * Filename: sl811_cs.c | |
4 | * Author: Yukio Yamamoto | |
5 | * | |
6 | * Port to sl811-hcd and 2.6.x by | |
7 | * Botond Botyanszki <boti@rocketmail.com> | |
8 | * Simon Pickering | |
9 | * | |
10 | * Last update: 2005-05-12 | |
11 | */ | |
12 | ||
13 | #include <linux/kernel.h> | |
14 | #include <linux/module.h> | |
15 | #include <linux/init.h> | |
16 | #include <linux/sched.h> | |
17 | #include <linux/ptrace.h> | |
18 | #include <linux/slab.h> | |
19 | #include <linux/string.h> | |
20 | #include <linux/timer.h> | |
21 | #include <linux/ioport.h> | |
d052d1be | 22 | #include <linux/platform_device.h> |
c6de2b64 | 23 | |
c6de2b64 DB |
24 | #include <pcmcia/cs_types.h> |
25 | #include <pcmcia/cs.h> | |
26 | #include <pcmcia/cistpl.h> | |
27 | #include <pcmcia/cisreg.h> | |
28 | #include <pcmcia/ds.h> | |
29 | ||
30 | #include <linux/usb_sl811.h> | |
31 | ||
32 | MODULE_AUTHOR("Botond Botyanszki"); | |
33 | MODULE_DESCRIPTION("REX-CFU1U PCMCIA driver for 2.6"); | |
34 | MODULE_LICENSE("GPL"); | |
35 | ||
36 | ||
37 | /*====================================================================*/ | |
38 | /* MACROS */ | |
39 | /*====================================================================*/ | |
40 | ||
41 | #if defined(DEBUG) || defined(CONFIG_USB_DEBUG) || defined(PCMCIA_DEBUG) | |
42 | ||
43 | static int pc_debug = 0; | |
44 | module_param(pc_debug, int, 0644); | |
45 | ||
46 | #define DBG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG "sl811_cs: " args) | |
47 | ||
48 | #else | |
49 | #define DBG(n, args...) do{}while(0) | |
50 | #endif /* no debugging */ | |
51 | ||
52 | #define INFO(args...) printk(KERN_INFO "sl811_cs: " args) | |
53 | ||
54 | #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0444) | |
55 | ||
56 | #define CS_CHECK(fn, ret) \ | |
57 | do { \ | |
58 | last_fn = (fn); \ | |
59 | if ((last_ret = (ret)) != 0) \ | |
60 | goto cs_failed; \ | |
61 | } while (0) | |
62 | ||
63 | /*====================================================================*/ | |
64 | /* VARIABLES */ | |
65 | /*====================================================================*/ | |
66 | ||
67 | static const char driver_name[DEV_NAME_LEN] = "sl811_cs"; | |
68 | ||
69 | static dev_link_t *dev_list = NULL; | |
70 | ||
c6de2b64 DB |
71 | typedef struct local_info_t { |
72 | dev_link_t link; | |
73 | dev_node_t node; | |
74 | } local_info_t; | |
75 | ||
76 | /*====================================================================*/ | |
77 | ||
78 | static void release_platform_dev(struct device * dev) | |
79 | { | |
80 | DBG(0, "sl811_cs platform_dev release\n"); | |
81 | dev->parent = NULL; | |
82 | } | |
83 | ||
84 | static struct sl811_platform_data platform_data = { | |
85 | .potpg = 100, | |
86 | .power = 50, /* == 100mA */ | |
87 | // .reset = ... FIXME: invoke CF reset on the card | |
88 | }; | |
89 | ||
90 | static struct resource resources[] = { | |
91 | [0] = { | |
92 | .flags = IORESOURCE_IRQ, | |
93 | }, | |
94 | [1] = { | |
95 | // .name = "address", | |
96 | .flags = IORESOURCE_IO, | |
97 | }, | |
98 | [2] = { | |
99 | // .name = "data", | |
100 | .flags = IORESOURCE_IO, | |
101 | }, | |
102 | }; | |
103 | ||
104 | extern struct device_driver sl811h_driver; | |
105 | ||
106 | static struct platform_device platform_dev = { | |
107 | .id = -1, | |
108 | .dev = { | |
109 | .platform_data = &platform_data, | |
110 | .release = release_platform_dev, | |
111 | }, | |
112 | .resource = resources, | |
113 | .num_resources = ARRAY_SIZE(resources), | |
114 | }; | |
115 | ||
116 | static int sl811_hc_init(struct device *parent, ioaddr_t base_addr, int irq) | |
117 | { | |
118 | if (platform_dev.dev.parent) | |
119 | return -EBUSY; | |
120 | platform_dev.dev.parent = parent; | |
121 | ||
122 | /* finish seting up the platform device */ | |
123 | resources[0].start = irq; | |
124 | ||
125 | resources[1].start = base_addr; | |
126 | resources[1].end = base_addr; | |
127 | ||
128 | resources[2].start = base_addr + 1; | |
129 | resources[2].end = base_addr + 1; | |
130 | ||
131 | /* The driver core will probe for us. We know sl811-hcd has been | |
132 | * initialized already because of the link order dependency. | |
133 | */ | |
134 | platform_dev.name = sl811h_driver.name; | |
135 | return platform_device_register(&platform_dev); | |
136 | } | |
137 | ||
138 | /*====================================================================*/ | |
139 | ||
140 | static void sl811_cs_detach(dev_link_t *link) | |
141 | { | |
142 | dev_link_t **linkp; | |
143 | ||
144 | DBG(0, "sl811_cs_detach(0x%p)\n", link); | |
145 | ||
146 | /* Locate device structure */ | |
147 | for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next) { | |
148 | if (*linkp == link) | |
149 | break; | |
150 | } | |
151 | if (*linkp == NULL) | |
152 | return; | |
153 | ||
154 | /* Break the link with Card Services */ | |
155 | if (link->handle) | |
156 | pcmcia_deregister_client(link->handle); | |
157 | ||
158 | /* Unlink device structure, and free it */ | |
159 | *linkp = link->next; | |
160 | /* This points to the parent local_info_t struct */ | |
161 | kfree(link->priv); | |
162 | } | |
163 | ||
164 | static void sl811_cs_release(dev_link_t * link) | |
165 | { | |
166 | ||
167 | DBG(0, "sl811_cs_release(0x%p)\n", link); | |
168 | ||
169 | if (link->open) { | |
170 | DBG(1, "sl811_cs: release postponed, '%s' still open\n", | |
171 | link->dev->dev_name); | |
172 | link->state |= DEV_STALE_CONFIG; | |
173 | return; | |
174 | } | |
175 | ||
176 | /* Unlink the device chain */ | |
177 | link->dev = NULL; | |
178 | ||
179 | platform_device_unregister(&platform_dev); | |
180 | pcmcia_release_configuration(link->handle); | |
181 | if (link->io.NumPorts1) | |
182 | pcmcia_release_io(link->handle, &link->io); | |
183 | if (link->irq.AssignedIRQ) | |
184 | pcmcia_release_irq(link->handle, &link->irq); | |
185 | link->state &= ~DEV_CONFIG; | |
186 | ||
187 | if (link->state & DEV_STALE_LINK) | |
188 | sl811_cs_detach(link); | |
189 | } | |
190 | ||
191 | static void sl811_cs_config(dev_link_t *link) | |
192 | { | |
193 | client_handle_t handle = link->handle; | |
194 | struct device *parent = &handle_to_dev(handle); | |
195 | local_info_t *dev = link->priv; | |
196 | tuple_t tuple; | |
197 | cisparse_t parse; | |
198 | int last_fn, last_ret; | |
199 | u_char buf[64]; | |
200 | config_info_t conf; | |
201 | cistpl_cftable_entry_t dflt = { 0 }; | |
202 | ||
203 | DBG(0, "sl811_cs_config(0x%p)\n", link); | |
204 | ||
205 | tuple.DesiredTuple = CISTPL_CONFIG; | |
206 | tuple.Attributes = 0; | |
207 | tuple.TupleData = buf; | |
208 | tuple.TupleDataMax = sizeof(buf); | |
209 | tuple.TupleOffset = 0; | |
210 | CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple)); | |
211 | CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple)); | |
212 | CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse)); | |
213 | link->conf.ConfigBase = parse.config.base; | |
214 | link->conf.Present = parse.config.rmask[0]; | |
215 | ||
216 | /* Configure card */ | |
217 | link->state |= DEV_CONFIG; | |
218 | ||
219 | /* Look up the current Vcc */ | |
220 | CS_CHECK(GetConfigurationInfo, | |
221 | pcmcia_get_configuration_info(handle, &conf)); | |
222 | link->conf.Vcc = conf.Vcc; | |
223 | ||
224 | tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; | |
225 | CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple)); | |
226 | while (1) { | |
227 | cistpl_cftable_entry_t *cfg = &(parse.cftable_entry); | |
228 | ||
229 | if (pcmcia_get_tuple_data(handle, &tuple) != 0 | |
230 | || pcmcia_parse_tuple(handle, &tuple, &parse) | |
231 | != 0) | |
232 | goto next_entry; | |
233 | ||
234 | if (cfg->flags & CISTPL_CFTABLE_DEFAULT) { | |
235 | dflt = *cfg; | |
236 | } | |
237 | ||
238 | if (cfg->index == 0) | |
239 | goto next_entry; | |
240 | ||
241 | link->conf.ConfigIndex = cfg->index; | |
242 | ||
243 | /* Use power settings for Vcc and Vpp if present */ | |
244 | /* Note that the CIS values need to be rescaled */ | |
245 | if (cfg->vcc.present & (1<<CISTPL_POWER_VNOM)) { | |
246 | if (cfg->vcc.param[CISTPL_POWER_VNOM]/10000 | |
247 | != conf.Vcc) | |
248 | goto next_entry; | |
249 | } else if (dflt.vcc.present & (1<<CISTPL_POWER_VNOM)) { | |
250 | if (dflt.vcc.param[CISTPL_POWER_VNOM]/10000 | |
251 | != conf.Vcc) | |
252 | goto next_entry; | |
253 | } | |
254 | ||
255 | if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM)) | |
256 | link->conf.Vpp1 = link->conf.Vpp2 = | |
257 | cfg->vpp1.param[CISTPL_POWER_VNOM]/10000; | |
258 | else if (dflt.vpp1.present & (1<<CISTPL_POWER_VNOM)) | |
259 | link->conf.Vpp1 = link->conf.Vpp2 = | |
260 | dflt.vpp1.param[CISTPL_POWER_VNOM]/10000; | |
261 | ||
262 | /* we need an interrupt */ | |
263 | if (cfg->irq.IRQInfo1 || dflt.irq.IRQInfo1) | |
264 | link->conf.Attributes |= CONF_ENABLE_IRQ; | |
265 | ||
266 | /* IO window settings */ | |
267 | link->io.NumPorts1 = link->io.NumPorts2 = 0; | |
268 | if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) { | |
269 | cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io; | |
270 | ||
271 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_8; | |
272 | link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK; | |
273 | link->io.BasePort1 = io->win[0].base; | |
274 | link->io.NumPorts1 = io->win[0].len; | |
275 | ||
276 | if (pcmcia_request_io(link->handle, &link->io) != 0) | |
277 | goto next_entry; | |
278 | } | |
279 | break; | |
280 | ||
281 | next_entry: | |
282 | if (link->io.NumPorts1) | |
283 | pcmcia_release_io(link->handle, &link->io); | |
284 | last_ret = pcmcia_get_next_tuple(handle, &tuple); | |
285 | } | |
286 | ||
287 | /* require an IRQ and two registers */ | |
288 | if (!link->io.NumPorts1 || link->io.NumPorts1 < 2) | |
289 | goto cs_failed; | |
290 | if (link->conf.Attributes & CONF_ENABLE_IRQ) | |
291 | CS_CHECK(RequestIRQ, | |
292 | pcmcia_request_irq(link->handle, &link->irq)); | |
293 | else | |
294 | goto cs_failed; | |
295 | ||
296 | CS_CHECK(RequestConfiguration, | |
297 | pcmcia_request_configuration(link->handle, &link->conf)); | |
298 | ||
299 | sprintf(dev->node.dev_name, driver_name); | |
300 | dev->node.major = dev->node.minor = 0; | |
301 | link->dev = &dev->node; | |
302 | ||
303 | printk(KERN_INFO "%s: index 0x%02x: Vcc %d.%d", | |
304 | dev->node.dev_name, link->conf.ConfigIndex, | |
305 | link->conf.Vcc/10, link->conf.Vcc%10); | |
306 | if (link->conf.Vpp1) | |
307 | printk(", Vpp %d.%d", link->conf.Vpp1/10, link->conf.Vpp1%10); | |
308 | printk(", irq %d", link->irq.AssignedIRQ); | |
309 | printk(", io 0x%04x-0x%04x", link->io.BasePort1, | |
310 | link->io.BasePort1+link->io.NumPorts1-1); | |
311 | printk("\n"); | |
312 | ||
313 | link->state &= ~DEV_CONFIG_PENDING; | |
314 | ||
315 | if (sl811_hc_init(parent, link->io.BasePort1, link->irq.AssignedIRQ) | |
316 | < 0) { | |
317 | cs_failed: | |
318 | printk("sl811_cs_config failed\n"); | |
319 | cs_error(link->handle, last_fn, last_ret); | |
320 | sl811_cs_release(link); | |
321 | link->state &= ~DEV_CONFIG_PENDING; | |
322 | } | |
323 | } | |
324 | ||
325 | static int | |
326 | sl811_cs_event(event_t event, int priority, event_callback_args_t *args) | |
327 | { | |
328 | dev_link_t *link = args->client_data; | |
329 | ||
330 | DBG(1, "sl811_cs_event(0x%06x)\n", event); | |
331 | ||
332 | switch (event) { | |
333 | case CS_EVENT_CARD_REMOVAL: | |
334 | link->state &= ~DEV_PRESENT; | |
335 | if (link->state & DEV_CONFIG) | |
336 | sl811_cs_release(link); | |
337 | break; | |
338 | ||
339 | case CS_EVENT_CARD_INSERTION: | |
340 | link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; | |
341 | sl811_cs_config(link); | |
342 | break; | |
343 | ||
344 | case CS_EVENT_PM_SUSPEND: | |
345 | link->state |= DEV_SUSPEND; | |
346 | /* Fall through... */ | |
347 | case CS_EVENT_RESET_PHYSICAL: | |
348 | if (link->state & DEV_CONFIG) | |
349 | pcmcia_release_configuration(link->handle); | |
350 | break; | |
351 | ||
352 | case CS_EVENT_PM_RESUME: | |
353 | link->state &= ~DEV_SUSPEND; | |
354 | /* Fall through... */ | |
355 | case CS_EVENT_CARD_RESET: | |
356 | if (link->state & DEV_CONFIG) | |
357 | pcmcia_request_configuration(link->handle, &link->conf); | |
358 | DBG(0, "reset sl811-hcd here?\n"); | |
359 | break; | |
360 | } | |
361 | return 0; | |
362 | } | |
363 | ||
364 | static dev_link_t *sl811_cs_attach(void) | |
365 | { | |
366 | local_info_t *local; | |
367 | dev_link_t *link; | |
368 | client_reg_t client_reg; | |
22f3a8f5 | 369 | int ret; |
c6de2b64 DB |
370 | |
371 | local = kmalloc(sizeof(local_info_t), GFP_KERNEL); | |
372 | if (!local) | |
373 | return NULL; | |
374 | memset(local, 0, sizeof(local_info_t)); | |
375 | link = &local->link; | |
376 | link->priv = local; | |
377 | ||
378 | /* Initialize */ | |
379 | link->irq.Attributes = IRQ_TYPE_EXCLUSIVE; | |
380 | link->irq.IRQInfo1 = IRQ_INFO2_VALID|IRQ_LEVEL_ID; | |
c6de2b64 DB |
381 | link->irq.Handler = NULL; |
382 | ||
383 | link->conf.Attributes = 0; | |
384 | link->conf.Vcc = 33; | |
385 | link->conf.IntType = INT_MEMORY_AND_IO; | |
386 | ||
387 | /* Register with Card Services */ | |
388 | link->next = dev_list; | |
389 | dev_list = link; | |
390 | client_reg.dev_info = (dev_info_t *) &driver_name; | |
391 | client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE; | |
c6de2b64 DB |
392 | client_reg.Version = 0x0210; |
393 | client_reg.event_callback_args.client_data = link; | |
394 | ret = pcmcia_register_client(&link->handle, &client_reg); | |
395 | if (ret != CS_SUCCESS) { | |
396 | cs_error(link->handle, RegisterClient, ret); | |
397 | sl811_cs_detach(link); | |
398 | return NULL; | |
399 | } | |
400 | ||
401 | return link; | |
402 | } | |
403 | ||
22f3a8f5 DB |
404 | static struct pcmcia_device_id sl811_ids[] = { |
405 | PCMCIA_DEVICE_MANF_CARD(0xc015, 0x0001), /* RATOC USB HOST CF+ Card */ | |
406 | PCMCIA_DEVICE_NULL, | |
407 | }; | |
408 | MODULE_DEVICE_TABLE(pcmcia, sl811_ids); | |
409 | ||
c6de2b64 DB |
410 | static struct pcmcia_driver sl811_cs_driver = { |
411 | .owner = THIS_MODULE, | |
412 | .drv = { | |
413 | .name = (char *)driver_name, | |
414 | }, | |
415 | .attach = sl811_cs_attach, | |
1e212f36 | 416 | .event = sl811_cs_event, |
c6de2b64 | 417 | .detach = sl811_cs_detach, |
22f3a8f5 | 418 | .id_table = sl811_ids, |
c6de2b64 DB |
419 | }; |
420 | ||
421 | /*====================================================================*/ | |
422 | ||
423 | static int __init init_sl811_cs(void) | |
424 | { | |
425 | return pcmcia_register_driver(&sl811_cs_driver); | |
426 | } | |
427 | module_init(init_sl811_cs); | |
428 | ||
429 | static void __exit exit_sl811_cs(void) | |
430 | { | |
431 | pcmcia_unregister_driver(&sl811_cs_driver); | |
432 | } | |
433 | module_exit(exit_sl811_cs); |