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> | |
7146f0d3 | 14 | #include <linux/freezer.h> |
4020f2d7 AD |
15 | |
16 | #define DRIVER_NAME "tifm_7xx1" | |
50743f4c | 17 | #define DRIVER_VERSION "0.7" |
4020f2d7 AD |
18 | |
19 | static void tifm_7xx1_eject(struct tifm_adapter *fm, struct tifm_dev *sock) | |
20 | { | |
4020f2d7 AD |
21 | unsigned long flags; |
22 | ||
23 | spin_lock_irqsave(&fm->lock, flags); | |
7146f0d3 AD |
24 | fm->socket_change_set |= 1 << sock->socket_id; |
25 | wake_up_all(&fm->change_set_notify); | |
4020f2d7 AD |
26 | spin_unlock_irqrestore(&fm->lock, flags); |
27 | } | |
28 | ||
7d12e780 | 29 | static irqreturn_t tifm_7xx1_isr(int irq, void *dev_id) |
4020f2d7 AD |
30 | { |
31 | struct tifm_adapter *fm = dev_id; | |
217334d1 | 32 | struct tifm_dev *sock; |
4020f2d7 AD |
33 | unsigned int irq_status; |
34 | unsigned int sock_irq_status, cnt; | |
35 | ||
36 | spin_lock(&fm->lock); | |
37 | irq_status = readl(fm->addr + FM_INTERRUPT_STATUS); | |
38 | if (irq_status == 0 || irq_status == (~0)) { | |
39 | spin_unlock(&fm->lock); | |
40 | return IRQ_NONE; | |
41 | } | |
42 | ||
43 | if (irq_status & TIFM_IRQ_ENABLE) { | |
44 | writel(TIFM_IRQ_ENABLE, fm->addr + FM_CLEAR_INTERRUPT_ENABLE); | |
45 | ||
6412d927 | 46 | for (cnt = 0; cnt < fm->num_sockets; cnt++) { |
217334d1 | 47 | sock = fm->sockets[cnt]; |
6412d927 AD |
48 | sock_irq_status = (irq_status >> cnt) |
49 | & (TIFM_IRQ_FIFOMASK(1) | |
50 | | TIFM_IRQ_CARDMASK(1)); | |
4020f2d7 | 51 | |
6412d927 AD |
52 | if (sock && sock_irq_status) |
53 | sock->signal_irq(sock, sock_irq_status); | |
4020f2d7 | 54 | } |
6412d927 AD |
55 | |
56 | fm->socket_change_set |= irq_status | |
57 | & ((1 << fm->num_sockets) - 1); | |
4020f2d7 AD |
58 | } |
59 | writel(irq_status, fm->addr + FM_INTERRUPT_STATUS); | |
60 | ||
7146f0d3 AD |
61 | if (!fm->socket_change_set) |
62 | writel(TIFM_IRQ_ENABLE, fm->addr + FM_SET_INTERRUPT_ENABLE); | |
63 | else | |
64 | wake_up_all(&fm->change_set_notify); | |
4020f2d7 AD |
65 | |
66 | spin_unlock(&fm->lock); | |
67 | return IRQ_HANDLED; | |
68 | } | |
69 | ||
e069d79d | 70 | static tifm_media_id tifm_7xx1_toggle_sock_power(char __iomem *sock_addr, int is_x2) |
4020f2d7 AD |
71 | { |
72 | unsigned int s_state; | |
73 | int cnt; | |
74 | ||
75 | writel(0x0e00, sock_addr + SOCK_CONTROL); | |
76 | ||
77 | for (cnt = 0; cnt < 100; cnt++) { | |
78 | if (!(TIFM_SOCK_STATE_POWERED & | |
79 | readl(sock_addr + SOCK_PRESENT_STATE))) | |
80 | break; | |
81 | msleep(10); | |
82 | } | |
83 | ||
84 | s_state = readl(sock_addr + SOCK_PRESENT_STATE); | |
85 | if (!(TIFM_SOCK_STATE_OCCUPIED & s_state)) | |
86 | return FM_NULL; | |
87 | ||
88 | if (is_x2) { | |
89 | writel((s_state & 7) | 0x0c00, sock_addr + SOCK_CONTROL); | |
90 | } else { | |
91 | // SmartMedia cards need extra 40 msec | |
92 | if (((readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7) == 1) | |
93 | msleep(40); | |
94 | writel(readl(sock_addr + SOCK_CONTROL) | TIFM_CTRL_LED, | |
95 | sock_addr + SOCK_CONTROL); | |
96 | msleep(10); | |
97 | writel((s_state & 0x7) | 0x0c00 | TIFM_CTRL_LED, | |
98 | sock_addr + SOCK_CONTROL); | |
99 | } | |
100 | ||
101 | for (cnt = 0; cnt < 100; cnt++) { | |
102 | if ((TIFM_SOCK_STATE_POWERED & | |
103 | readl(sock_addr + SOCK_PRESENT_STATE))) | |
104 | break; | |
105 | msleep(10); | |
106 | } | |
107 | ||
108 | if (!is_x2) | |
109 | writel(readl(sock_addr + SOCK_CONTROL) & (~TIFM_CTRL_LED), | |
110 | sock_addr + SOCK_CONTROL); | |
111 | ||
112 | return (readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7; | |
113 | } | |
114 | ||
e069d79d AV |
115 | inline static char __iomem * |
116 | tifm_7xx1_sock_addr(char __iomem *base_addr, unsigned int sock_num) | |
4020f2d7 AD |
117 | { |
118 | return base_addr + ((sock_num + 1) << 10); | |
119 | } | |
120 | ||
7146f0d3 | 121 | static int tifm_7xx1_switch_media(void *data) |
4020f2d7 | 122 | { |
7146f0d3 | 123 | struct tifm_adapter *fm = data; |
4020f2d7 AD |
124 | unsigned long flags; |
125 | tifm_media_id media_id; | |
126 | char *card_name = "xx"; | |
7146f0d3 | 127 | int cnt, rc; |
6412d927 AD |
128 | struct tifm_dev *sock; |
129 | unsigned int socket_change_set; | |
4020f2d7 | 130 | |
6412d927 | 131 | while (1) { |
7146f0d3 AD |
132 | rc = wait_event_interruptible(fm->change_set_notify, |
133 | fm->socket_change_set); | |
134 | if (rc == -ERESTARTSYS) | |
135 | try_to_freeze(); | |
136 | ||
6412d927 AD |
137 | spin_lock_irqsave(&fm->lock, flags); |
138 | socket_change_set = fm->socket_change_set; | |
139 | fm->socket_change_set = 0; | |
140 | ||
141 | dev_dbg(fm->dev, "checking media set %x\n", | |
142 | socket_change_set); | |
143 | ||
7146f0d3 | 144 | if (kthread_should_stop()) |
6412d927 | 145 | socket_change_set = (1 << fm->num_sockets) - 1; |
4020f2d7 | 146 | spin_unlock_irqrestore(&fm->lock, flags); |
4020f2d7 | 147 | |
6412d927 | 148 | if (!socket_change_set) |
7146f0d3 | 149 | continue; |
6412d927 AD |
150 | |
151 | spin_lock_irqsave(&fm->lock, flags); | |
152 | for (cnt = 0; cnt < fm->num_sockets; cnt++) { | |
153 | if (!(socket_change_set & (1 << cnt))) | |
154 | continue; | |
155 | sock = fm->sockets[cnt]; | |
156 | if (sock) { | |
4020f2d7 | 157 | printk(KERN_INFO DRIVER_NAME |
6412d927 AD |
158 | ": demand removing card from socket %d\n", |
159 | cnt); | |
160 | fm->sockets[cnt] = NULL; | |
161 | spin_unlock_irqrestore(&fm->lock, flags); | |
162 | device_unregister(&sock->dev); | |
4020f2d7 | 163 | spin_lock_irqsave(&fm->lock, flags); |
6412d927 AD |
164 | writel(0x0e00, |
165 | tifm_7xx1_sock_addr(fm->addr, cnt) | |
166 | + SOCK_CONTROL); | |
167 | } | |
7146f0d3 | 168 | if (kthread_should_stop()) |
6412d927 AD |
169 | continue; |
170 | ||
171 | spin_unlock_irqrestore(&fm->lock, flags); | |
172 | media_id = tifm_7xx1_toggle_sock_power( | |
173 | tifm_7xx1_sock_addr(fm->addr, cnt), | |
174 | fm->num_sockets == 2); | |
175 | if (media_id) { | |
176 | sock = tifm_alloc_device(fm); | |
177 | if (sock) { | |
178 | sock->addr = tifm_7xx1_sock_addr(fm->addr, | |
179 | cnt); | |
180 | sock->media_id = media_id; | |
181 | sock->socket_id = cnt; | |
182 | switch (media_id) { | |
183 | case 1: | |
184 | card_name = "xd"; | |
185 | break; | |
186 | case 2: | |
187 | card_name = "ms"; | |
188 | break; | |
189 | case 3: | |
190 | card_name = "sd"; | |
191 | break; | |
192 | default: | |
193 | tifm_free_device(&sock->dev); | |
194 | spin_lock_irqsave(&fm->lock, flags); | |
195 | continue; | |
196 | } | |
197 | snprintf(sock->dev.bus_id, BUS_ID_SIZE, | |
198 | "tifm_%s%u:%u", card_name, fm->id, cnt); | |
199 | printk(KERN_INFO DRIVER_NAME | |
200 | ": %s card detected in socket %d\n", | |
201 | card_name, cnt); | |
202 | if (!device_register(&sock->dev)) { | |
203 | spin_lock_irqsave(&fm->lock, flags); | |
204 | if (!fm->sockets[cnt]) { | |
205 | fm->sockets[cnt] = sock; | |
206 | sock = NULL; | |
207 | } | |
208 | spin_unlock_irqrestore(&fm->lock, flags); | |
209 | } | |
210 | if (sock) | |
211 | tifm_free_device(&sock->dev); | |
4020f2d7 | 212 | } |
6412d927 AD |
213 | spin_lock_irqsave(&fm->lock, flags); |
214 | } | |
215 | } | |
216 | ||
7146f0d3 | 217 | if (!kthread_should_stop()) { |
6412d927 AD |
218 | writel(TIFM_IRQ_FIFOMASK(socket_change_set) |
219 | | TIFM_IRQ_CARDMASK(socket_change_set), | |
220 | fm->addr + FM_CLEAR_INTERRUPT_ENABLE); | |
221 | writel(TIFM_IRQ_FIFOMASK(socket_change_set) | |
222 | | TIFM_IRQ_CARDMASK(socket_change_set), | |
223 | fm->addr + FM_SET_INTERRUPT_ENABLE); | |
224 | writel(TIFM_IRQ_ENABLE, | |
225 | fm->addr + FM_SET_INTERRUPT_ENABLE); | |
226 | spin_unlock_irqrestore(&fm->lock, flags); | |
6412d927 AD |
227 | } else { |
228 | for (cnt = 0; cnt < fm->num_sockets; cnt++) { | |
229 | if (fm->sockets[cnt]) | |
230 | fm->socket_change_set |= 1 << cnt; | |
231 | } | |
232 | if (!fm->socket_change_set) { | |
233 | spin_unlock_irqrestore(&fm->lock, flags); | |
7146f0d3 | 234 | return 0; |
6412d927 | 235 | } else { |
4020f2d7 | 236 | spin_unlock_irqrestore(&fm->lock, flags); |
4020f2d7 AD |
237 | } |
238 | } | |
4020f2d7 | 239 | } |
7146f0d3 | 240 | return 0; |
4020f2d7 AD |
241 | } |
242 | ||
7146f0d3 AD |
243 | #ifdef CONFIG_PM |
244 | ||
4020f2d7 AD |
245 | static int tifm_7xx1_suspend(struct pci_dev *dev, pm_message_t state) |
246 | { | |
7146f0d3 | 247 | dev_dbg(&dev->dev, "suspending host\n"); |
4020f2d7 | 248 | |
7146f0d3 AD |
249 | pci_save_state(dev); |
250 | pci_enable_wake(dev, pci_choose_state(dev, state), 0); | |
251 | pci_disable_device(dev); | |
252 | pci_set_power_state(dev, pci_choose_state(dev, state)); | |
4020f2d7 AD |
253 | return 0; |
254 | } | |
255 | ||
256 | static int tifm_7xx1_resume(struct pci_dev *dev) | |
257 | { | |
258 | struct tifm_adapter *fm = pci_get_drvdata(dev); | |
7146f0d3 | 259 | int cnt, rc; |
4020f2d7 | 260 | unsigned long flags; |
7146f0d3 | 261 | tifm_media_id new_ids[fm->num_sockets]; |
4020f2d7 | 262 | |
7146f0d3 | 263 | pci_set_power_state(dev, PCI_D0); |
4020f2d7 | 264 | pci_restore_state(dev); |
7146f0d3 AD |
265 | rc = pci_enable_device(dev); |
266 | if (rc) | |
267 | return rc; | |
268 | pci_set_master(dev); | |
269 | ||
270 | dev_dbg(&dev->dev, "resuming host\n"); | |
4020f2d7 | 271 | |
7146f0d3 AD |
272 | for (cnt = 0; cnt < fm->num_sockets; cnt++) |
273 | new_ids[cnt] = tifm_7xx1_toggle_sock_power( | |
274 | tifm_7xx1_sock_addr(fm->addr, cnt), | |
275 | fm->num_sockets == 2); | |
4020f2d7 | 276 | spin_lock_irqsave(&fm->lock, flags); |
7146f0d3 AD |
277 | fm->socket_change_set = 0; |
278 | for (cnt = 0; cnt < fm->num_sockets; cnt++) { | |
279 | if (fm->sockets[cnt]) { | |
280 | if (fm->sockets[cnt]->media_id == new_ids[cnt]) | |
281 | fm->socket_change_set |= 1 << cnt; | |
282 | ||
283 | fm->sockets[cnt]->media_id = new_ids[cnt]; | |
284 | } | |
285 | } | |
286 | ||
6412d927 | 287 | writel(TIFM_IRQ_ENABLE | TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1), |
7146f0d3 AD |
288 | fm->addr + FM_SET_INTERRUPT_ENABLE); |
289 | if (!fm->socket_change_set) { | |
290 | spin_unlock_irqrestore(&fm->lock, flags); | |
291 | return 0; | |
292 | } else { | |
293 | fm->socket_change_set = 0; | |
294 | spin_unlock_irqrestore(&fm->lock, flags); | |
295 | } | |
296 | ||
297 | wait_event_timeout(fm->change_set_notify, fm->socket_change_set, HZ); | |
298 | ||
299 | spin_lock_irqsave(&fm->lock, flags); | |
300 | writel(TIFM_IRQ_FIFOMASK(fm->socket_change_set) | |
301 | | TIFM_IRQ_CARDMASK(fm->socket_change_set), | |
302 | fm->addr + FM_CLEAR_INTERRUPT_ENABLE); | |
303 | writel(TIFM_IRQ_FIFOMASK(fm->socket_change_set) | |
304 | | TIFM_IRQ_CARDMASK(fm->socket_change_set), | |
305 | fm->addr + FM_SET_INTERRUPT_ENABLE); | |
306 | writel(TIFM_IRQ_ENABLE, | |
307 | fm->addr + FM_SET_INTERRUPT_ENABLE); | |
308 | fm->socket_change_set = 0; | |
309 | ||
4020f2d7 AD |
310 | spin_unlock_irqrestore(&fm->lock, flags); |
311 | return 0; | |
312 | } | |
313 | ||
7146f0d3 AD |
314 | #else |
315 | ||
316 | #define tifm_7xx1_suspend NULL | |
317 | #define tifm_7xx1_resume NULL | |
318 | ||
319 | #endif /* CONFIG_PM */ | |
320 | ||
4020f2d7 AD |
321 | static int tifm_7xx1_probe(struct pci_dev *dev, |
322 | const struct pci_device_id *dev_id) | |
323 | { | |
324 | struct tifm_adapter *fm; | |
325 | int pci_dev_busy = 0; | |
326 | int rc; | |
327 | ||
328 | rc = pci_set_dma_mask(dev, DMA_32BIT_MASK); | |
329 | if (rc) | |
330 | return rc; | |
331 | ||
332 | rc = pci_enable_device(dev); | |
333 | if (rc) | |
334 | return rc; | |
335 | ||
336 | pci_set_master(dev); | |
337 | ||
338 | rc = pci_request_regions(dev, DRIVER_NAME); | |
339 | if (rc) { | |
340 | pci_dev_busy = 1; | |
341 | goto err_out; | |
342 | } | |
343 | ||
344 | pci_intx(dev, 1); | |
345 | ||
346 | fm = tifm_alloc_adapter(); | |
347 | if (!fm) { | |
348 | rc = -ENOMEM; | |
349 | goto err_out_int; | |
350 | } | |
351 | ||
352 | fm->dev = &dev->dev; | |
6412d927 AD |
353 | fm->num_sockets = (dev->device == 0x803B) ? 2 : 4; |
354 | fm->sockets = kzalloc(sizeof(struct tifm_dev*) * fm->num_sockets, | |
4020f2d7 AD |
355 | GFP_KERNEL); |
356 | if (!fm->sockets) | |
357 | goto err_out_free; | |
358 | ||
4020f2d7 AD |
359 | fm->eject = tifm_7xx1_eject; |
360 | pci_set_drvdata(dev, fm); | |
361 | ||
362 | fm->addr = ioremap(pci_resource_start(dev, 0), | |
363 | pci_resource_len(dev, 0)); | |
364 | if (!fm->addr) | |
365 | goto err_out_free; | |
366 | ||
367 | rc = request_irq(dev->irq, tifm_7xx1_isr, SA_SHIRQ, DRIVER_NAME, fm); | |
368 | if (rc) | |
369 | goto err_out_unmap; | |
370 | ||
7146f0d3 AD |
371 | init_waitqueue_head(&fm->change_set_notify); |
372 | rc = tifm_add_adapter(fm, tifm_7xx1_switch_media); | |
4020f2d7 AD |
373 | if (rc) |
374 | goto err_out_irq; | |
375 | ||
376 | writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE); | |
6412d927 | 377 | writel(TIFM_IRQ_ENABLE | TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1), |
4020f2d7 | 378 | fm->addr + FM_SET_INTERRUPT_ENABLE); |
7146f0d3 | 379 | wake_up_process(fm->media_switcher); |
4020f2d7 AD |
380 | return 0; |
381 | ||
382 | err_out_irq: | |
383 | free_irq(dev->irq, fm); | |
384 | err_out_unmap: | |
385 | iounmap(fm->addr); | |
386 | err_out_free: | |
387 | pci_set_drvdata(dev, NULL); | |
388 | tifm_free_adapter(fm); | |
389 | err_out_int: | |
390 | pci_intx(dev, 0); | |
391 | pci_release_regions(dev); | |
392 | err_out: | |
393 | if (!pci_dev_busy) | |
394 | pci_disable_device(dev); | |
395 | return rc; | |
396 | } | |
397 | ||
398 | static void tifm_7xx1_remove(struct pci_dev *dev) | |
399 | { | |
400 | struct tifm_adapter *fm = pci_get_drvdata(dev); | |
401 | unsigned long flags; | |
402 | ||
7146f0d3 AD |
403 | writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE); |
404 | mmiowb(); | |
405 | free_irq(dev->irq, fm); | |
406 | ||
4020f2d7 | 407 | spin_lock_irqsave(&fm->lock, flags); |
7146f0d3 | 408 | fm->socket_change_set = (1 << fm->num_sockets) - 1; |
4020f2d7 AD |
409 | spin_unlock_irqrestore(&fm->lock, flags); |
410 | ||
7146f0d3 | 411 | kthread_stop(fm->media_switcher); |
4020f2d7 AD |
412 | |
413 | tifm_remove_adapter(fm); | |
414 | ||
e069d79d | 415 | pci_set_drvdata(dev, NULL); |
4020f2d7 AD |
416 | |
417 | iounmap(fm->addr); | |
418 | pci_intx(dev, 0); | |
419 | pci_release_regions(dev); | |
420 | ||
421 | pci_disable_device(dev); | |
422 | tifm_free_adapter(fm); | |
423 | } | |
424 | ||
425 | static struct pci_device_id tifm_7xx1_pci_tbl [] = { | |
426 | { PCI_VENDOR_ID_TI, 0x8033, PCI_ANY_ID, PCI_ANY_ID, 0, 0, | |
427 | 0 }, /* xx21 - the one I have */ | |
428 | { PCI_VENDOR_ID_TI, 0x803B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, | |
429 | 0 }, /* xx12 - should be also supported */ | |
430 | { } | |
431 | }; | |
432 | ||
433 | static struct pci_driver tifm_7xx1_driver = { | |
434 | .name = DRIVER_NAME, | |
435 | .id_table = tifm_7xx1_pci_tbl, | |
436 | .probe = tifm_7xx1_probe, | |
437 | .remove = tifm_7xx1_remove, | |
438 | .suspend = tifm_7xx1_suspend, | |
439 | .resume = tifm_7xx1_resume, | |
440 | }; | |
441 | ||
442 | static int __init tifm_7xx1_init(void) | |
443 | { | |
444 | return pci_register_driver(&tifm_7xx1_driver); | |
445 | } | |
446 | ||
447 | static void __exit tifm_7xx1_exit(void) | |
448 | { | |
449 | pci_unregister_driver(&tifm_7xx1_driver); | |
450 | } | |
451 | ||
452 | MODULE_AUTHOR("Alex Dubov"); | |
453 | MODULE_DESCRIPTION("TI FlashMedia host driver"); | |
454 | MODULE_LICENSE("GPL"); | |
455 | MODULE_DEVICE_TABLE(pci, tifm_7xx1_pci_tbl); | |
456 | MODULE_VERSION(DRIVER_VERSION); | |
457 | ||
458 | module_init(tifm_7xx1_init); | |
459 | module_exit(tifm_7xx1_exit); |