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 | ||
c4028958 | 36 | static void tifm_7xx1_remove_media(struct work_struct *work) |
4020f2d7 | 37 | { |
c4028958 DH |
38 | struct tifm_adapter *fm = |
39 | container_of(work, struct tifm_adapter, media_remover); | |
4020f2d7 AD |
40 | unsigned long flags; |
41 | int cnt; | |
42 | struct tifm_dev *sock; | |
43 | ||
44 | if (!class_device_get(&fm->cdev)) | |
45 | return; | |
46 | spin_lock_irqsave(&fm->lock, flags); | |
47 | for (cnt = 0; cnt < fm->max_sockets; cnt++) { | |
48 | if (fm->sockets[cnt] && (fm->remove_mask & (1 << cnt))) { | |
49 | printk(KERN_INFO DRIVER_NAME | |
50 | ": demand removing card from socket %d\n", cnt); | |
51 | sock = fm->sockets[cnt]; | |
e069d79d | 52 | fm->sockets[cnt] = NULL; |
4020f2d7 AD |
53 | fm->remove_mask &= ~(1 << cnt); |
54 | ||
55 | writel(0x0e00, sock->addr + SOCK_CONTROL); | |
56 | ||
57 | writel((TIFM_IRQ_FIFOMASK | TIFM_IRQ_CARDMASK) << cnt, | |
58 | fm->addr + FM_CLEAR_INTERRUPT_ENABLE); | |
59 | writel((TIFM_IRQ_FIFOMASK | TIFM_IRQ_CARDMASK) << cnt, | |
60 | fm->addr + FM_SET_INTERRUPT_ENABLE); | |
61 | ||
62 | spin_unlock_irqrestore(&fm->lock, flags); | |
63 | device_unregister(&sock->dev); | |
64 | spin_lock_irqsave(&fm->lock, flags); | |
65 | } | |
66 | } | |
67 | spin_unlock_irqrestore(&fm->lock, flags); | |
68 | class_device_put(&fm->cdev); | |
69 | } | |
70 | ||
7d12e780 | 71 | static irqreturn_t tifm_7xx1_isr(int irq, void *dev_id) |
4020f2d7 AD |
72 | { |
73 | struct tifm_adapter *fm = dev_id; | |
74 | unsigned int irq_status; | |
75 | unsigned int sock_irq_status, cnt; | |
76 | ||
77 | spin_lock(&fm->lock); | |
78 | irq_status = readl(fm->addr + FM_INTERRUPT_STATUS); | |
79 | if (irq_status == 0 || irq_status == (~0)) { | |
80 | spin_unlock(&fm->lock); | |
81 | return IRQ_NONE; | |
82 | } | |
83 | ||
84 | if (irq_status & TIFM_IRQ_ENABLE) { | |
85 | writel(TIFM_IRQ_ENABLE, fm->addr + FM_CLEAR_INTERRUPT_ENABLE); | |
86 | ||
87 | for (cnt = 0; cnt < fm->max_sockets; cnt++) { | |
88 | sock_irq_status = (irq_status >> cnt) & | |
89 | (TIFM_IRQ_FIFOMASK | TIFM_IRQ_CARDMASK); | |
90 | ||
91 | if (fm->sockets[cnt]) { | |
92 | if (sock_irq_status && | |
93 | fm->sockets[cnt]->signal_irq) | |
94 | sock_irq_status = fm->sockets[cnt]-> | |
95 | signal_irq(fm->sockets[cnt], | |
96 | sock_irq_status); | |
97 | ||
98 | if (irq_status & (1 << cnt)) | |
99 | fm->remove_mask |= 1 << cnt; | |
100 | } else { | |
101 | if (irq_status & (1 << cnt)) | |
102 | fm->insert_mask |= 1 << cnt; | |
103 | } | |
104 | } | |
105 | } | |
106 | writel(irq_status, fm->addr + FM_INTERRUPT_STATUS); | |
107 | ||
108 | if (!fm->inhibit_new_cards) { | |
109 | if (!fm->remove_mask && !fm->insert_mask) { | |
110 | writel(TIFM_IRQ_ENABLE, | |
111 | fm->addr + FM_SET_INTERRUPT_ENABLE); | |
112 | } else { | |
113 | queue_work(fm->wq, &fm->media_remover); | |
114 | queue_work(fm->wq, &fm->media_inserter); | |
115 | } | |
116 | } | |
117 | ||
118 | spin_unlock(&fm->lock); | |
119 | return IRQ_HANDLED; | |
120 | } | |
121 | ||
e069d79d | 122 | static tifm_media_id tifm_7xx1_toggle_sock_power(char __iomem *sock_addr, int is_x2) |
4020f2d7 AD |
123 | { |
124 | unsigned int s_state; | |
125 | int cnt; | |
126 | ||
127 | writel(0x0e00, sock_addr + SOCK_CONTROL); | |
128 | ||
129 | for (cnt = 0; cnt < 100; cnt++) { | |
130 | if (!(TIFM_SOCK_STATE_POWERED & | |
131 | readl(sock_addr + SOCK_PRESENT_STATE))) | |
132 | break; | |
133 | msleep(10); | |
134 | } | |
135 | ||
136 | s_state = readl(sock_addr + SOCK_PRESENT_STATE); | |
137 | if (!(TIFM_SOCK_STATE_OCCUPIED & s_state)) | |
138 | return FM_NULL; | |
139 | ||
140 | if (is_x2) { | |
141 | writel((s_state & 7) | 0x0c00, sock_addr + SOCK_CONTROL); | |
142 | } else { | |
143 | // SmartMedia cards need extra 40 msec | |
144 | if (((readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7) == 1) | |
145 | msleep(40); | |
146 | writel(readl(sock_addr + SOCK_CONTROL) | TIFM_CTRL_LED, | |
147 | sock_addr + SOCK_CONTROL); | |
148 | msleep(10); | |
149 | writel((s_state & 0x7) | 0x0c00 | TIFM_CTRL_LED, | |
150 | sock_addr + SOCK_CONTROL); | |
151 | } | |
152 | ||
153 | for (cnt = 0; cnt < 100; cnt++) { | |
154 | if ((TIFM_SOCK_STATE_POWERED & | |
155 | readl(sock_addr + SOCK_PRESENT_STATE))) | |
156 | break; | |
157 | msleep(10); | |
158 | } | |
159 | ||
160 | if (!is_x2) | |
161 | writel(readl(sock_addr + SOCK_CONTROL) & (~TIFM_CTRL_LED), | |
162 | sock_addr + SOCK_CONTROL); | |
163 | ||
164 | return (readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7; | |
165 | } | |
166 | ||
e069d79d AV |
167 | inline static char __iomem * |
168 | tifm_7xx1_sock_addr(char __iomem *base_addr, unsigned int sock_num) | |
4020f2d7 AD |
169 | { |
170 | return base_addr + ((sock_num + 1) << 10); | |
171 | } | |
172 | ||
c4028958 | 173 | static void tifm_7xx1_insert_media(struct work_struct *work) |
4020f2d7 | 174 | { |
c4028958 DH |
175 | struct tifm_adapter *fm = |
176 | container_of(work, struct tifm_adapter, media_inserter); | |
4020f2d7 AD |
177 | unsigned long flags; |
178 | tifm_media_id media_id; | |
179 | char *card_name = "xx"; | |
180 | int cnt, ok_to_register; | |
181 | unsigned int insert_mask; | |
e069d79d | 182 | struct tifm_dev *new_sock = NULL; |
4020f2d7 AD |
183 | |
184 | if (!class_device_get(&fm->cdev)) | |
185 | return; | |
186 | spin_lock_irqsave(&fm->lock, flags); | |
187 | insert_mask = fm->insert_mask; | |
188 | fm->insert_mask = 0; | |
189 | if (fm->inhibit_new_cards) { | |
190 | spin_unlock_irqrestore(&fm->lock, flags); | |
191 | class_device_put(&fm->cdev); | |
192 | return; | |
193 | } | |
194 | spin_unlock_irqrestore(&fm->lock, flags); | |
195 | ||
196 | for (cnt = 0; cnt < fm->max_sockets; cnt++) { | |
197 | if (!(insert_mask & (1 << cnt))) | |
198 | continue; | |
199 | ||
200 | media_id = tifm_7xx1_toggle_sock_power(tifm_7xx1_sock_addr(fm->addr, cnt), | |
201 | fm->max_sockets == 2); | |
202 | if (media_id) { | |
203 | ok_to_register = 0; | |
204 | new_sock = tifm_alloc_device(fm, cnt); | |
205 | if (new_sock) { | |
206 | new_sock->addr = tifm_7xx1_sock_addr(fm->addr, | |
207 | cnt); | |
208 | new_sock->media_id = media_id; | |
209 | switch (media_id) { | |
210 | case 1: | |
211 | card_name = "xd"; | |
212 | break; | |
213 | case 2: | |
214 | card_name = "ms"; | |
215 | break; | |
216 | case 3: | |
217 | card_name = "sd"; | |
218 | break; | |
219 | default: | |
220 | break; | |
221 | } | |
222 | snprintf(new_sock->dev.bus_id, BUS_ID_SIZE, | |
223 | "tifm_%s%u:%u", card_name, fm->id, cnt); | |
224 | printk(KERN_INFO DRIVER_NAME | |
225 | ": %s card detected in socket %d\n", | |
226 | card_name, cnt); | |
227 | spin_lock_irqsave(&fm->lock, flags); | |
228 | if (!fm->sockets[cnt]) { | |
229 | fm->sockets[cnt] = new_sock; | |
230 | ok_to_register = 1; | |
231 | } | |
232 | spin_unlock_irqrestore(&fm->lock, flags); | |
233 | if (!ok_to_register || | |
234 | device_register(&new_sock->dev)) { | |
235 | spin_lock_irqsave(&fm->lock, flags); | |
e069d79d | 236 | fm->sockets[cnt] = NULL; |
4020f2d7 AD |
237 | spin_unlock_irqrestore(&fm->lock, |
238 | flags); | |
239 | tifm_free_device(&new_sock->dev); | |
240 | } | |
241 | } | |
242 | } | |
243 | writel((TIFM_IRQ_FIFOMASK | TIFM_IRQ_CARDMASK) << cnt, | |
244 | fm->addr + FM_CLEAR_INTERRUPT_ENABLE); | |
245 | writel((TIFM_IRQ_FIFOMASK | TIFM_IRQ_CARDMASK) << cnt, | |
246 | fm->addr + FM_SET_INTERRUPT_ENABLE); | |
247 | } | |
248 | ||
249 | writel(TIFM_IRQ_ENABLE, fm->addr + FM_SET_INTERRUPT_ENABLE); | |
250 | class_device_put(&fm->cdev); | |
251 | } | |
252 | ||
253 | static int tifm_7xx1_suspend(struct pci_dev *dev, pm_message_t state) | |
254 | { | |
255 | struct tifm_adapter *fm = pci_get_drvdata(dev); | |
256 | unsigned long flags; | |
257 | ||
258 | spin_lock_irqsave(&fm->lock, flags); | |
259 | fm->inhibit_new_cards = 1; | |
260 | fm->remove_mask = 0xf; | |
261 | fm->insert_mask = 0; | |
262 | writel(TIFM_IRQ_ENABLE, fm->addr + FM_CLEAR_INTERRUPT_ENABLE); | |
263 | spin_unlock_irqrestore(&fm->lock, flags); | |
264 | flush_workqueue(fm->wq); | |
265 | ||
c4028958 | 266 | tifm_7xx1_remove_media(&fm->media_remover); |
4020f2d7 AD |
267 | |
268 | pci_set_power_state(dev, PCI_D3hot); | |
269 | pci_disable_device(dev); | |
270 | pci_save_state(dev); | |
271 | return 0; | |
272 | } | |
273 | ||
274 | static int tifm_7xx1_resume(struct pci_dev *dev) | |
275 | { | |
276 | struct tifm_adapter *fm = pci_get_drvdata(dev); | |
277 | unsigned long flags; | |
278 | ||
279 | pci_restore_state(dev); | |
280 | pci_enable_device(dev); | |
281 | pci_set_power_state(dev, PCI_D0); | |
282 | pci_set_master(dev); | |
283 | ||
284 | spin_lock_irqsave(&fm->lock, flags); | |
285 | fm->inhibit_new_cards = 0; | |
286 | writel(TIFM_IRQ_SETALL, fm->addr + FM_INTERRUPT_STATUS); | |
287 | writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE); | |
288 | writel(TIFM_IRQ_ENABLE | TIFM_IRQ_SETALLSOCK, | |
289 | fm->addr + FM_SET_INTERRUPT_ENABLE); | |
290 | fm->insert_mask = 0xf; | |
291 | spin_unlock_irqrestore(&fm->lock, flags); | |
292 | return 0; | |
293 | } | |
294 | ||
295 | static int tifm_7xx1_probe(struct pci_dev *dev, | |
296 | const struct pci_device_id *dev_id) | |
297 | { | |
298 | struct tifm_adapter *fm; | |
299 | int pci_dev_busy = 0; | |
300 | int rc; | |
301 | ||
302 | rc = pci_set_dma_mask(dev, DMA_32BIT_MASK); | |
303 | if (rc) | |
304 | return rc; | |
305 | ||
306 | rc = pci_enable_device(dev); | |
307 | if (rc) | |
308 | return rc; | |
309 | ||
310 | pci_set_master(dev); | |
311 | ||
312 | rc = pci_request_regions(dev, DRIVER_NAME); | |
313 | if (rc) { | |
314 | pci_dev_busy = 1; | |
315 | goto err_out; | |
316 | } | |
317 | ||
318 | pci_intx(dev, 1); | |
319 | ||
320 | fm = tifm_alloc_adapter(); | |
321 | if (!fm) { | |
322 | rc = -ENOMEM; | |
323 | goto err_out_int; | |
324 | } | |
325 | ||
326 | fm->dev = &dev->dev; | |
327 | fm->max_sockets = (dev->device == 0x803B) ? 2 : 4; | |
328 | fm->sockets = kzalloc(sizeof(struct tifm_dev*) * fm->max_sockets, | |
329 | GFP_KERNEL); | |
330 | if (!fm->sockets) | |
331 | goto err_out_free; | |
332 | ||
c4028958 DH |
333 | INIT_WORK(&fm->media_inserter, tifm_7xx1_insert_media); |
334 | INIT_WORK(&fm->media_remover, tifm_7xx1_remove_media); | |
4020f2d7 AD |
335 | fm->eject = tifm_7xx1_eject; |
336 | pci_set_drvdata(dev, fm); | |
337 | ||
338 | fm->addr = ioremap(pci_resource_start(dev, 0), | |
339 | pci_resource_len(dev, 0)); | |
340 | if (!fm->addr) | |
341 | goto err_out_free; | |
342 | ||
343 | rc = request_irq(dev->irq, tifm_7xx1_isr, SA_SHIRQ, DRIVER_NAME, fm); | |
344 | if (rc) | |
345 | goto err_out_unmap; | |
346 | ||
347 | rc = tifm_add_adapter(fm); | |
348 | if (rc) | |
349 | goto err_out_irq; | |
350 | ||
351 | writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE); | |
352 | writel(TIFM_IRQ_ENABLE | TIFM_IRQ_SETALLSOCK, | |
353 | fm->addr + FM_SET_INTERRUPT_ENABLE); | |
354 | ||
355 | fm->insert_mask = 0xf; | |
356 | ||
357 | return 0; | |
358 | ||
359 | err_out_irq: | |
360 | free_irq(dev->irq, fm); | |
361 | err_out_unmap: | |
362 | iounmap(fm->addr); | |
363 | err_out_free: | |
364 | pci_set_drvdata(dev, NULL); | |
365 | tifm_free_adapter(fm); | |
366 | err_out_int: | |
367 | pci_intx(dev, 0); | |
368 | pci_release_regions(dev); | |
369 | err_out: | |
370 | if (!pci_dev_busy) | |
371 | pci_disable_device(dev); | |
372 | return rc; | |
373 | } | |
374 | ||
375 | static void tifm_7xx1_remove(struct pci_dev *dev) | |
376 | { | |
377 | struct tifm_adapter *fm = pci_get_drvdata(dev); | |
378 | unsigned long flags; | |
379 | ||
380 | spin_lock_irqsave(&fm->lock, flags); | |
381 | fm->inhibit_new_cards = 1; | |
382 | fm->remove_mask = 0xf; | |
383 | fm->insert_mask = 0; | |
384 | writel(TIFM_IRQ_ENABLE, fm->addr + FM_CLEAR_INTERRUPT_ENABLE); | |
385 | spin_unlock_irqrestore(&fm->lock, flags); | |
386 | ||
387 | flush_workqueue(fm->wq); | |
388 | ||
c4028958 | 389 | tifm_7xx1_remove_media(&fm->media_remover); |
4020f2d7 AD |
390 | |
391 | writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE); | |
392 | free_irq(dev->irq, fm); | |
393 | ||
394 | tifm_remove_adapter(fm); | |
395 | ||
e069d79d | 396 | pci_set_drvdata(dev, NULL); |
4020f2d7 AD |
397 | |
398 | iounmap(fm->addr); | |
399 | pci_intx(dev, 0); | |
400 | pci_release_regions(dev); | |
401 | ||
402 | pci_disable_device(dev); | |
403 | tifm_free_adapter(fm); | |
404 | } | |
405 | ||
406 | static struct pci_device_id tifm_7xx1_pci_tbl [] = { | |
407 | { PCI_VENDOR_ID_TI, 0x8033, PCI_ANY_ID, PCI_ANY_ID, 0, 0, | |
408 | 0 }, /* xx21 - the one I have */ | |
409 | { PCI_VENDOR_ID_TI, 0x803B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, | |
410 | 0 }, /* xx12 - should be also supported */ | |
411 | { } | |
412 | }; | |
413 | ||
414 | static struct pci_driver tifm_7xx1_driver = { | |
415 | .name = DRIVER_NAME, | |
416 | .id_table = tifm_7xx1_pci_tbl, | |
417 | .probe = tifm_7xx1_probe, | |
418 | .remove = tifm_7xx1_remove, | |
419 | .suspend = tifm_7xx1_suspend, | |
420 | .resume = tifm_7xx1_resume, | |
421 | }; | |
422 | ||
423 | static int __init tifm_7xx1_init(void) | |
424 | { | |
425 | return pci_register_driver(&tifm_7xx1_driver); | |
426 | } | |
427 | ||
428 | static void __exit tifm_7xx1_exit(void) | |
429 | { | |
430 | pci_unregister_driver(&tifm_7xx1_driver); | |
431 | } | |
432 | ||
433 | MODULE_AUTHOR("Alex Dubov"); | |
434 | MODULE_DESCRIPTION("TI FlashMedia host driver"); | |
435 | MODULE_LICENSE("GPL"); | |
436 | MODULE_DEVICE_TABLE(pci, tifm_7xx1_pci_tbl); | |
437 | MODULE_VERSION(DRIVER_VERSION); | |
438 | ||
439 | module_init(tifm_7xx1_init); | |
440 | module_exit(tifm_7xx1_exit); |