Commit | Line | Data |
---|---|---|
4020f2d7 AD |
1 | /* |
2 | * tifm_7xx1.c - TI FlashMedia driver | |
3 | * | |
4 | * Copyright (C) 2006 Alex Dubov <oakad@yahoo.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | * | |
10 | */ | |
11 | ||
12 | #include <linux/tifm.h> | |
13 | #include <linux/dma-mapping.h> | |
14 | ||
15 | #define DRIVER_NAME "tifm_7xx1" | |
16 | #define DRIVER_VERSION "0.6" | |
17 | ||
18 | static void tifm_7xx1_eject(struct tifm_adapter *fm, struct tifm_dev *sock) | |
19 | { | |
20 | int cnt; | |
21 | unsigned long flags; | |
22 | ||
23 | spin_lock_irqsave(&fm->lock, flags); | |
24 | if (!fm->inhibit_new_cards) { | |
25 | for (cnt = 0; cnt < fm->max_sockets; cnt++) { | |
26 | if (fm->sockets[cnt] == sock) { | |
27 | fm->remove_mask |= (1 << cnt); | |
28 | queue_work(fm->wq, &fm->media_remover); | |
29 | break; | |
30 | } | |
31 | } | |
32 | } | |
33 | spin_unlock_irqrestore(&fm->lock, flags); | |
34 | } | |
35 | ||
36 | static void tifm_7xx1_remove_media(void *adapter) | |
37 | { | |
38 | struct tifm_adapter *fm = adapter; | |
39 | unsigned long flags; | |
40 | int cnt; | |
41 | struct tifm_dev *sock; | |
42 | ||
43 | if (!class_device_get(&fm->cdev)) | |
44 | return; | |
45 | spin_lock_irqsave(&fm->lock, flags); | |
46 | for (cnt = 0; cnt < fm->max_sockets; cnt++) { | |
47 | if (fm->sockets[cnt] && (fm->remove_mask & (1 << cnt))) { | |
48 | printk(KERN_INFO DRIVER_NAME | |
49 | ": demand removing card from socket %d\n", cnt); | |
50 | sock = fm->sockets[cnt]; | |
51 | fm->sockets[cnt] = 0; | |
52 | fm->remove_mask &= ~(1 << cnt); | |
53 | ||
54 | writel(0x0e00, sock->addr + SOCK_CONTROL); | |
55 | ||
56 | writel((TIFM_IRQ_FIFOMASK | TIFM_IRQ_CARDMASK) << cnt, | |
57 | fm->addr + FM_CLEAR_INTERRUPT_ENABLE); | |
58 | writel((TIFM_IRQ_FIFOMASK | TIFM_IRQ_CARDMASK) << cnt, | |
59 | fm->addr + FM_SET_INTERRUPT_ENABLE); | |
60 | ||
61 | spin_unlock_irqrestore(&fm->lock, flags); | |
62 | device_unregister(&sock->dev); | |
63 | spin_lock_irqsave(&fm->lock, flags); | |
64 | } | |
65 | } | |
66 | spin_unlock_irqrestore(&fm->lock, flags); | |
67 | class_device_put(&fm->cdev); | |
68 | } | |
69 | ||
7d12e780 | 70 | static irqreturn_t tifm_7xx1_isr(int irq, void *dev_id) |
4020f2d7 AD |
71 | { |
72 | struct tifm_adapter *fm = dev_id; | |
73 | unsigned int irq_status; | |
74 | unsigned int sock_irq_status, cnt; | |
75 | ||
76 | spin_lock(&fm->lock); | |
77 | irq_status = readl(fm->addr + FM_INTERRUPT_STATUS); | |
78 | if (irq_status == 0 || irq_status == (~0)) { | |
79 | spin_unlock(&fm->lock); | |
80 | return IRQ_NONE; | |
81 | } | |
82 | ||
83 | if (irq_status & TIFM_IRQ_ENABLE) { | |
84 | writel(TIFM_IRQ_ENABLE, fm->addr + FM_CLEAR_INTERRUPT_ENABLE); | |
85 | ||
86 | for (cnt = 0; cnt < fm->max_sockets; cnt++) { | |
87 | sock_irq_status = (irq_status >> cnt) & | |
88 | (TIFM_IRQ_FIFOMASK | TIFM_IRQ_CARDMASK); | |
89 | ||
90 | if (fm->sockets[cnt]) { | |
91 | if (sock_irq_status && | |
92 | fm->sockets[cnt]->signal_irq) | |
93 | sock_irq_status = fm->sockets[cnt]-> | |
94 | signal_irq(fm->sockets[cnt], | |
95 | sock_irq_status); | |
96 | ||
97 | if (irq_status & (1 << cnt)) | |
98 | fm->remove_mask |= 1 << cnt; | |
99 | } else { | |
100 | if (irq_status & (1 << cnt)) | |
101 | fm->insert_mask |= 1 << cnt; | |
102 | } | |
103 | } | |
104 | } | |
105 | writel(irq_status, fm->addr + FM_INTERRUPT_STATUS); | |
106 | ||
107 | if (!fm->inhibit_new_cards) { | |
108 | if (!fm->remove_mask && !fm->insert_mask) { | |
109 | writel(TIFM_IRQ_ENABLE, | |
110 | fm->addr + FM_SET_INTERRUPT_ENABLE); | |
111 | } else { | |
112 | queue_work(fm->wq, &fm->media_remover); | |
113 | queue_work(fm->wq, &fm->media_inserter); | |
114 | } | |
115 | } | |
116 | ||
117 | spin_unlock(&fm->lock); | |
118 | return IRQ_HANDLED; | |
119 | } | |
120 | ||
121 | static tifm_media_id tifm_7xx1_toggle_sock_power(char *sock_addr, int is_x2) | |
122 | { | |
123 | unsigned int s_state; | |
124 | int cnt; | |
125 | ||
126 | writel(0x0e00, sock_addr + SOCK_CONTROL); | |
127 | ||
128 | for (cnt = 0; cnt < 100; cnt++) { | |
129 | if (!(TIFM_SOCK_STATE_POWERED & | |
130 | readl(sock_addr + SOCK_PRESENT_STATE))) | |
131 | break; | |
132 | msleep(10); | |
133 | } | |
134 | ||
135 | s_state = readl(sock_addr + SOCK_PRESENT_STATE); | |
136 | if (!(TIFM_SOCK_STATE_OCCUPIED & s_state)) | |
137 | return FM_NULL; | |
138 | ||
139 | if (is_x2) { | |
140 | writel((s_state & 7) | 0x0c00, sock_addr + SOCK_CONTROL); | |
141 | } else { | |
142 | // SmartMedia cards need extra 40 msec | |
143 | if (((readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7) == 1) | |
144 | msleep(40); | |
145 | writel(readl(sock_addr + SOCK_CONTROL) | TIFM_CTRL_LED, | |
146 | sock_addr + SOCK_CONTROL); | |
147 | msleep(10); | |
148 | writel((s_state & 0x7) | 0x0c00 | TIFM_CTRL_LED, | |
149 | sock_addr + SOCK_CONTROL); | |
150 | } | |
151 | ||
152 | for (cnt = 0; cnt < 100; cnt++) { | |
153 | if ((TIFM_SOCK_STATE_POWERED & | |
154 | readl(sock_addr + SOCK_PRESENT_STATE))) | |
155 | break; | |
156 | msleep(10); | |
157 | } | |
158 | ||
159 | if (!is_x2) | |
160 | writel(readl(sock_addr + SOCK_CONTROL) & (~TIFM_CTRL_LED), | |
161 | sock_addr + SOCK_CONTROL); | |
162 | ||
163 | return (readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7; | |
164 | } | |
165 | ||
166 | inline static char *tifm_7xx1_sock_addr(char *base_addr, unsigned int sock_num) | |
167 | { | |
168 | return base_addr + ((sock_num + 1) << 10); | |
169 | } | |
170 | ||
171 | static void tifm_7xx1_insert_media(void *adapter) | |
172 | { | |
173 | struct tifm_adapter *fm = adapter; | |
174 | unsigned long flags; | |
175 | tifm_media_id media_id; | |
176 | char *card_name = "xx"; | |
177 | int cnt, ok_to_register; | |
178 | unsigned int insert_mask; | |
179 | struct tifm_dev *new_sock = 0; | |
180 | ||
181 | if (!class_device_get(&fm->cdev)) | |
182 | return; | |
183 | spin_lock_irqsave(&fm->lock, flags); | |
184 | insert_mask = fm->insert_mask; | |
185 | fm->insert_mask = 0; | |
186 | if (fm->inhibit_new_cards) { | |
187 | spin_unlock_irqrestore(&fm->lock, flags); | |
188 | class_device_put(&fm->cdev); | |
189 | return; | |
190 | } | |
191 | spin_unlock_irqrestore(&fm->lock, flags); | |
192 | ||
193 | for (cnt = 0; cnt < fm->max_sockets; cnt++) { | |
194 | if (!(insert_mask & (1 << cnt))) | |
195 | continue; | |
196 | ||
197 | media_id = tifm_7xx1_toggle_sock_power(tifm_7xx1_sock_addr(fm->addr, cnt), | |
198 | fm->max_sockets == 2); | |
199 | if (media_id) { | |
200 | ok_to_register = 0; | |
201 | new_sock = tifm_alloc_device(fm, cnt); | |
202 | if (new_sock) { | |
203 | new_sock->addr = tifm_7xx1_sock_addr(fm->addr, | |
204 | cnt); | |
205 | new_sock->media_id = media_id; | |
206 | switch (media_id) { | |
207 | case 1: | |
208 | card_name = "xd"; | |
209 | break; | |
210 | case 2: | |
211 | card_name = "ms"; | |
212 | break; | |
213 | case 3: | |
214 | card_name = "sd"; | |
215 | break; | |
216 | default: | |
217 | break; | |
218 | } | |
219 | snprintf(new_sock->dev.bus_id, BUS_ID_SIZE, | |
220 | "tifm_%s%u:%u", card_name, fm->id, cnt); | |
221 | printk(KERN_INFO DRIVER_NAME | |
222 | ": %s card detected in socket %d\n", | |
223 | card_name, cnt); | |
224 | spin_lock_irqsave(&fm->lock, flags); | |
225 | if (!fm->sockets[cnt]) { | |
226 | fm->sockets[cnt] = new_sock; | |
227 | ok_to_register = 1; | |
228 | } | |
229 | spin_unlock_irqrestore(&fm->lock, flags); | |
230 | if (!ok_to_register || | |
231 | device_register(&new_sock->dev)) { | |
232 | spin_lock_irqsave(&fm->lock, flags); | |
233 | fm->sockets[cnt] = 0; | |
234 | spin_unlock_irqrestore(&fm->lock, | |
235 | flags); | |
236 | tifm_free_device(&new_sock->dev); | |
237 | } | |
238 | } | |
239 | } | |
240 | writel((TIFM_IRQ_FIFOMASK | TIFM_IRQ_CARDMASK) << cnt, | |
241 | fm->addr + FM_CLEAR_INTERRUPT_ENABLE); | |
242 | writel((TIFM_IRQ_FIFOMASK | TIFM_IRQ_CARDMASK) << cnt, | |
243 | fm->addr + FM_SET_INTERRUPT_ENABLE); | |
244 | } | |
245 | ||
246 | writel(TIFM_IRQ_ENABLE, fm->addr + FM_SET_INTERRUPT_ENABLE); | |
247 | class_device_put(&fm->cdev); | |
248 | } | |
249 | ||
250 | static int tifm_7xx1_suspend(struct pci_dev *dev, pm_message_t state) | |
251 | { | |
252 | struct tifm_adapter *fm = pci_get_drvdata(dev); | |
253 | unsigned long flags; | |
254 | ||
255 | spin_lock_irqsave(&fm->lock, flags); | |
256 | fm->inhibit_new_cards = 1; | |
257 | fm->remove_mask = 0xf; | |
258 | fm->insert_mask = 0; | |
259 | writel(TIFM_IRQ_ENABLE, fm->addr + FM_CLEAR_INTERRUPT_ENABLE); | |
260 | spin_unlock_irqrestore(&fm->lock, flags); | |
261 | flush_workqueue(fm->wq); | |
262 | ||
263 | tifm_7xx1_remove_media(fm); | |
264 | ||
265 | pci_set_power_state(dev, PCI_D3hot); | |
266 | pci_disable_device(dev); | |
267 | pci_save_state(dev); | |
268 | return 0; | |
269 | } | |
270 | ||
271 | static int tifm_7xx1_resume(struct pci_dev *dev) | |
272 | { | |
273 | struct tifm_adapter *fm = pci_get_drvdata(dev); | |
274 | unsigned long flags; | |
275 | ||
276 | pci_restore_state(dev); | |
277 | pci_enable_device(dev); | |
278 | pci_set_power_state(dev, PCI_D0); | |
279 | pci_set_master(dev); | |
280 | ||
281 | spin_lock_irqsave(&fm->lock, flags); | |
282 | fm->inhibit_new_cards = 0; | |
283 | writel(TIFM_IRQ_SETALL, fm->addr + FM_INTERRUPT_STATUS); | |
284 | writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE); | |
285 | writel(TIFM_IRQ_ENABLE | TIFM_IRQ_SETALLSOCK, | |
286 | fm->addr + FM_SET_INTERRUPT_ENABLE); | |
287 | fm->insert_mask = 0xf; | |
288 | spin_unlock_irqrestore(&fm->lock, flags); | |
289 | return 0; | |
290 | } | |
291 | ||
292 | static int tifm_7xx1_probe(struct pci_dev *dev, | |
293 | const struct pci_device_id *dev_id) | |
294 | { | |
295 | struct tifm_adapter *fm; | |
296 | int pci_dev_busy = 0; | |
297 | int rc; | |
298 | ||
299 | rc = pci_set_dma_mask(dev, DMA_32BIT_MASK); | |
300 | if (rc) | |
301 | return rc; | |
302 | ||
303 | rc = pci_enable_device(dev); | |
304 | if (rc) | |
305 | return rc; | |
306 | ||
307 | pci_set_master(dev); | |
308 | ||
309 | rc = pci_request_regions(dev, DRIVER_NAME); | |
310 | if (rc) { | |
311 | pci_dev_busy = 1; | |
312 | goto err_out; | |
313 | } | |
314 | ||
315 | pci_intx(dev, 1); | |
316 | ||
317 | fm = tifm_alloc_adapter(); | |
318 | if (!fm) { | |
319 | rc = -ENOMEM; | |
320 | goto err_out_int; | |
321 | } | |
322 | ||
323 | fm->dev = &dev->dev; | |
324 | fm->max_sockets = (dev->device == 0x803B) ? 2 : 4; | |
325 | fm->sockets = kzalloc(sizeof(struct tifm_dev*) * fm->max_sockets, | |
326 | GFP_KERNEL); | |
327 | if (!fm->sockets) | |
328 | goto err_out_free; | |
329 | ||
330 | INIT_WORK(&fm->media_inserter, tifm_7xx1_insert_media, fm); | |
331 | INIT_WORK(&fm->media_remover, tifm_7xx1_remove_media, fm); | |
332 | fm->eject = tifm_7xx1_eject; | |
333 | pci_set_drvdata(dev, fm); | |
334 | ||
335 | fm->addr = ioremap(pci_resource_start(dev, 0), | |
336 | pci_resource_len(dev, 0)); | |
337 | if (!fm->addr) | |
338 | goto err_out_free; | |
339 | ||
340 | rc = request_irq(dev->irq, tifm_7xx1_isr, SA_SHIRQ, DRIVER_NAME, fm); | |
341 | if (rc) | |
342 | goto err_out_unmap; | |
343 | ||
344 | rc = tifm_add_adapter(fm); | |
345 | if (rc) | |
346 | goto err_out_irq; | |
347 | ||
348 | writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE); | |
349 | writel(TIFM_IRQ_ENABLE | TIFM_IRQ_SETALLSOCK, | |
350 | fm->addr + FM_SET_INTERRUPT_ENABLE); | |
351 | ||
352 | fm->insert_mask = 0xf; | |
353 | ||
354 | return 0; | |
355 | ||
356 | err_out_irq: | |
357 | free_irq(dev->irq, fm); | |
358 | err_out_unmap: | |
359 | iounmap(fm->addr); | |
360 | err_out_free: | |
361 | pci_set_drvdata(dev, NULL); | |
362 | tifm_free_adapter(fm); | |
363 | err_out_int: | |
364 | pci_intx(dev, 0); | |
365 | pci_release_regions(dev); | |
366 | err_out: | |
367 | if (!pci_dev_busy) | |
368 | pci_disable_device(dev); | |
369 | return rc; | |
370 | } | |
371 | ||
372 | static void tifm_7xx1_remove(struct pci_dev *dev) | |
373 | { | |
374 | struct tifm_adapter *fm = pci_get_drvdata(dev); | |
375 | unsigned long flags; | |
376 | ||
377 | spin_lock_irqsave(&fm->lock, flags); | |
378 | fm->inhibit_new_cards = 1; | |
379 | fm->remove_mask = 0xf; | |
380 | fm->insert_mask = 0; | |
381 | writel(TIFM_IRQ_ENABLE, fm->addr + FM_CLEAR_INTERRUPT_ENABLE); | |
382 | spin_unlock_irqrestore(&fm->lock, flags); | |
383 | ||
384 | flush_workqueue(fm->wq); | |
385 | ||
386 | tifm_7xx1_remove_media(fm); | |
387 | ||
388 | writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE); | |
389 | free_irq(dev->irq, fm); | |
390 | ||
391 | tifm_remove_adapter(fm); | |
392 | ||
393 | pci_set_drvdata(dev, 0); | |
394 | ||
395 | iounmap(fm->addr); | |
396 | pci_intx(dev, 0); | |
397 | pci_release_regions(dev); | |
398 | ||
399 | pci_disable_device(dev); | |
400 | tifm_free_adapter(fm); | |
401 | } | |
402 | ||
403 | static struct pci_device_id tifm_7xx1_pci_tbl [] = { | |
404 | { PCI_VENDOR_ID_TI, 0x8033, PCI_ANY_ID, PCI_ANY_ID, 0, 0, | |
405 | 0 }, /* xx21 - the one I have */ | |
406 | { PCI_VENDOR_ID_TI, 0x803B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, | |
407 | 0 }, /* xx12 - should be also supported */ | |
408 | { } | |
409 | }; | |
410 | ||
411 | static struct pci_driver tifm_7xx1_driver = { | |
412 | .name = DRIVER_NAME, | |
413 | .id_table = tifm_7xx1_pci_tbl, | |
414 | .probe = tifm_7xx1_probe, | |
415 | .remove = tifm_7xx1_remove, | |
416 | .suspend = tifm_7xx1_suspend, | |
417 | .resume = tifm_7xx1_resume, | |
418 | }; | |
419 | ||
420 | static int __init tifm_7xx1_init(void) | |
421 | { | |
422 | return pci_register_driver(&tifm_7xx1_driver); | |
423 | } | |
424 | ||
425 | static void __exit tifm_7xx1_exit(void) | |
426 | { | |
427 | pci_unregister_driver(&tifm_7xx1_driver); | |
428 | } | |
429 | ||
430 | MODULE_AUTHOR("Alex Dubov"); | |
431 | MODULE_DESCRIPTION("TI FlashMedia host driver"); | |
432 | MODULE_LICENSE("GPL"); | |
433 | MODULE_DEVICE_TABLE(pci, tifm_7xx1_pci_tbl); | |
434 | MODULE_VERSION(DRIVER_VERSION); | |
435 | ||
436 | module_init(tifm_7xx1_init); | |
437 | module_exit(tifm_7xx1_exit); |