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