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> | |
c4030698 | 13 | #include <linux/dma-mapping.h> |
eb12a679 | 14 | #include <linux/module.h> |
4020f2d7 AD |
15 | |
16 | #define DRIVER_NAME "tifm_7xx1" | |
4552f0cb AD |
17 | #define DRIVER_VERSION "0.8" |
18 | ||
19 | #define TIFM_IRQ_ENABLE 0x80000000 | |
20 | #define TIFM_IRQ_SOCKMASK(x) (x) | |
21 | #define TIFM_IRQ_CARDMASK(x) ((x) << 8) | |
22 | #define TIFM_IRQ_FIFOMASK(x) ((x) << 16) | |
23 | #define TIFM_IRQ_SETALL 0xffffffff | |
4020f2d7 | 24 | |
6113ed73 AD |
25 | static void tifm_7xx1_dummy_eject(struct tifm_adapter *fm, |
26 | struct tifm_dev *sock) | |
27 | { | |
28 | } | |
29 | ||
4020f2d7 AD |
30 | static void tifm_7xx1_eject(struct tifm_adapter *fm, struct tifm_dev *sock) |
31 | { | |
4020f2d7 AD |
32 | unsigned long flags; |
33 | ||
34 | spin_lock_irqsave(&fm->lock, flags); | |
7146f0d3 | 35 | fm->socket_change_set |= 1 << sock->socket_id; |
3540af8f | 36 | tifm_queue_work(&fm->media_switcher); |
4020f2d7 AD |
37 | spin_unlock_irqrestore(&fm->lock, flags); |
38 | } | |
39 | ||
7d12e780 | 40 | static irqreturn_t tifm_7xx1_isr(int irq, void *dev_id) |
4020f2d7 AD |
41 | { |
42 | struct tifm_adapter *fm = dev_id; | |
217334d1 | 43 | struct tifm_dev *sock; |
91f8d011 | 44 | unsigned int irq_status, cnt; |
4020f2d7 AD |
45 | |
46 | spin_lock(&fm->lock); | |
47 | irq_status = readl(fm->addr + FM_INTERRUPT_STATUS); | |
48 | if (irq_status == 0 || irq_status == (~0)) { | |
49 | spin_unlock(&fm->lock); | |
50 | return IRQ_NONE; | |
51 | } | |
52 | ||
53 | if (irq_status & TIFM_IRQ_ENABLE) { | |
54 | writel(TIFM_IRQ_ENABLE, fm->addr + FM_CLEAR_INTERRUPT_ENABLE); | |
55 | ||
8b40adab | 56 | for (cnt = 0; cnt < fm->num_sockets; cnt++) { |
217334d1 | 57 | sock = fm->sockets[cnt]; |
4552f0cb AD |
58 | if (sock) { |
59 | if ((irq_status >> cnt) & TIFM_IRQ_FIFOMASK(1)) | |
60 | sock->data_event(sock); | |
61 | if ((irq_status >> cnt) & TIFM_IRQ_CARDMASK(1)) | |
62 | sock->card_event(sock); | |
63 | } | |
4020f2d7 | 64 | } |
6412d927 | 65 | |
8b40adab AD |
66 | fm->socket_change_set |= irq_status |
67 | & ((1 << fm->num_sockets) - 1); | |
4020f2d7 AD |
68 | } |
69 | writel(irq_status, fm->addr + FM_INTERRUPT_STATUS); | |
70 | ||
3540af8f AD |
71 | if (fm->finish_me) |
72 | complete_all(fm->finish_me); | |
73 | else if (!fm->socket_change_set) | |
7146f0d3 AD |
74 | writel(TIFM_IRQ_ENABLE, fm->addr + FM_SET_INTERRUPT_ENABLE); |
75 | else | |
3540af8f | 76 | tifm_queue_work(&fm->media_switcher); |
4020f2d7 AD |
77 | |
78 | spin_unlock(&fm->lock); | |
79 | return IRQ_HANDLED; | |
80 | } | |
81 | ||
342c0ec4 | 82 | static unsigned char tifm_7xx1_toggle_sock_power(char __iomem *sock_addr) |
4020f2d7 AD |
83 | { |
84 | unsigned int s_state; | |
85 | int cnt; | |
86 | ||
87 | writel(0x0e00, sock_addr + SOCK_CONTROL); | |
88 | ||
342c0ec4 | 89 | for (cnt = 16; cnt <= 256; cnt <<= 1) { |
8b40adab AD |
90 | if (!(TIFM_SOCK_STATE_POWERED |
91 | & readl(sock_addr + SOCK_PRESENT_STATE))) | |
4020f2d7 | 92 | break; |
342c0ec4 AD |
93 | |
94 | msleep(cnt); | |
4020f2d7 AD |
95 | } |
96 | ||
97 | s_state = readl(sock_addr + SOCK_PRESENT_STATE); | |
98 | if (!(TIFM_SOCK_STATE_OCCUPIED & s_state)) | |
e23f2b8a | 99 | return 0; |
4020f2d7 | 100 | |
342c0ec4 AD |
101 | writel(readl(sock_addr + SOCK_CONTROL) | TIFM_CTRL_LED, |
102 | sock_addr + SOCK_CONTROL); | |
4020f2d7 | 103 | |
342c0ec4 AD |
104 | /* xd needs some extra time before power on */ |
105 | if (((readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7) | |
106 | == TIFM_TYPE_XD) | |
107 | msleep(40); | |
108 | ||
055b8224 AD |
109 | writel((s_state & TIFM_CTRL_POWER_MASK) | 0x0c00, |
110 | sock_addr + SOCK_CONTROL); | |
342c0ec4 AD |
111 | /* wait for power to stabilize */ |
112 | msleep(20); | |
113 | for (cnt = 16; cnt <= 256; cnt <<= 1) { | |
8b40adab AD |
114 | if ((TIFM_SOCK_STATE_POWERED |
115 | & readl(sock_addr + SOCK_PRESENT_STATE))) | |
4020f2d7 | 116 | break; |
342c0ec4 AD |
117 | |
118 | msleep(cnt); | |
4020f2d7 AD |
119 | } |
120 | ||
342c0ec4 AD |
121 | writel(readl(sock_addr + SOCK_CONTROL) & (~TIFM_CTRL_LED), |
122 | sock_addr + SOCK_CONTROL); | |
4020f2d7 AD |
123 | |
124 | return (readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7; | |
125 | } | |
126 | ||
055b8224 AD |
127 | inline static void tifm_7xx1_sock_power_off(char __iomem *sock_addr) |
128 | { | |
129 | writel((~TIFM_CTRL_POWER_MASK) & readl(sock_addr + SOCK_CONTROL), | |
130 | sock_addr + SOCK_CONTROL); | |
131 | } | |
132 | ||
e069d79d AV |
133 | inline static char __iomem * |
134 | tifm_7xx1_sock_addr(char __iomem *base_addr, unsigned int sock_num) | |
4020f2d7 AD |
135 | { |
136 | return base_addr + ((sock_num + 1) << 10); | |
137 | } | |
138 | ||
3540af8f | 139 | static void tifm_7xx1_switch_media(struct work_struct *work) |
4020f2d7 | 140 | { |
3540af8f AD |
141 | struct tifm_adapter *fm = container_of(work, struct tifm_adapter, |
142 | media_switcher); | |
91f8d011 | 143 | struct tifm_dev *sock; |
055b8224 | 144 | char __iomem *sock_addr; |
4020f2d7 | 145 | unsigned long flags; |
e23f2b8a | 146 | unsigned char media_id; |
91f8d011 | 147 | unsigned int socket_change_set, cnt; |
4020f2d7 | 148 | |
3540af8f AD |
149 | spin_lock_irqsave(&fm->lock, flags); |
150 | socket_change_set = fm->socket_change_set; | |
151 | fm->socket_change_set = 0; | |
6412d927 | 152 | |
7dd817d0 | 153 | dev_dbg(fm->dev.parent, "checking media set %x\n", |
3540af8f | 154 | socket_change_set); |
6412d927 | 155 | |
3540af8f | 156 | if (!socket_change_set) { |
4020f2d7 | 157 | spin_unlock_irqrestore(&fm->lock, flags); |
3540af8f AD |
158 | return; |
159 | } | |
4020f2d7 | 160 | |
2428a8fe AD |
161 | for (cnt = 0; cnt < fm->num_sockets; cnt++) { |
162 | if (!(socket_change_set & (1 << cnt))) | |
163 | continue; | |
164 | sock = fm->sockets[cnt]; | |
165 | if (sock) { | |
166 | printk(KERN_INFO | |
167 | "%s : demand removing card from socket %u:%u\n", | |
0bad16aa | 168 | dev_name(&fm->dev), fm->id, cnt); |
2428a8fe | 169 | fm->sockets[cnt] = NULL; |
055b8224 | 170 | sock_addr = sock->addr; |
6412d927 | 171 | spin_unlock_irqrestore(&fm->lock, flags); |
2428a8fe AD |
172 | device_unregister(&sock->dev); |
173 | spin_lock_irqsave(&fm->lock, flags); | |
055b8224 AD |
174 | tifm_7xx1_sock_power_off(sock_addr); |
175 | writel(0x0e00, sock_addr + SOCK_CONTROL); | |
2428a8fe AD |
176 | } |
177 | ||
178 | spin_unlock_irqrestore(&fm->lock, flags); | |
179 | ||
180 | media_id = tifm_7xx1_toggle_sock_power( | |
181 | tifm_7xx1_sock_addr(fm->addr, cnt)); | |
182 | ||
183 | // tifm_alloc_device will check if media_id is valid | |
184 | sock = tifm_alloc_device(fm, cnt, media_id); | |
185 | if (sock) { | |
186 | sock->addr = tifm_7xx1_sock_addr(fm->addr, cnt); | |
187 | ||
188 | if (!device_register(&sock->dev)) { | |
6412d927 | 189 | spin_lock_irqsave(&fm->lock, flags); |
2428a8fe AD |
190 | if (!fm->sockets[cnt]) { |
191 | fm->sockets[cnt] = sock; | |
192 | sock = NULL; | |
193 | } | |
194 | spin_unlock_irqrestore(&fm->lock, flags); | |
6412d927 | 195 | } |
2428a8fe AD |
196 | if (sock) |
197 | tifm_free_device(&sock->dev); | |
6412d927 | 198 | } |
2428a8fe AD |
199 | spin_lock_irqsave(&fm->lock, flags); |
200 | } | |
6412d927 | 201 | |
3540af8f AD |
202 | writel(TIFM_IRQ_FIFOMASK(socket_change_set) |
203 | | TIFM_IRQ_CARDMASK(socket_change_set), | |
204 | fm->addr + FM_CLEAR_INTERRUPT_ENABLE); | |
205 | ||
206 | writel(TIFM_IRQ_FIFOMASK(socket_change_set) | |
207 | | TIFM_IRQ_CARDMASK(socket_change_set), | |
208 | fm->addr + FM_SET_INTERRUPT_ENABLE); | |
209 | ||
210 | writel(TIFM_IRQ_ENABLE, fm->addr + FM_SET_INTERRUPT_ENABLE); | |
211 | spin_unlock_irqrestore(&fm->lock, flags); | |
4020f2d7 AD |
212 | } |
213 | ||
7146f0d3 AD |
214 | #ifdef CONFIG_PM |
215 | ||
4020f2d7 AD |
216 | static int tifm_7xx1_suspend(struct pci_dev *dev, pm_message_t state) |
217 | { | |
055b8224 AD |
218 | struct tifm_adapter *fm = pci_get_drvdata(dev); |
219 | int cnt; | |
220 | ||
7146f0d3 | 221 | dev_dbg(&dev->dev, "suspending host\n"); |
4020f2d7 | 222 | |
055b8224 AD |
223 | for (cnt = 0; cnt < fm->num_sockets; cnt++) { |
224 | if (fm->sockets[cnt]) | |
225 | tifm_7xx1_sock_power_off(fm->sockets[cnt]->addr); | |
226 | } | |
227 | ||
7146f0d3 AD |
228 | pci_save_state(dev); |
229 | pci_enable_wake(dev, pci_choose_state(dev, state), 0); | |
230 | pci_disable_device(dev); | |
231 | pci_set_power_state(dev, pci_choose_state(dev, state)); | |
4020f2d7 AD |
232 | return 0; |
233 | } | |
234 | ||
235 | static int tifm_7xx1_resume(struct pci_dev *dev) | |
236 | { | |
237 | struct tifm_adapter *fm = pci_get_drvdata(dev); | |
88de1b2f | 238 | int rc; |
a819a228 | 239 | unsigned long timeout; |
88de1b2f | 240 | unsigned int good_sockets = 0, bad_sockets = 0; |
4020f2d7 | 241 | unsigned long flags; |
c13884a8 LA |
242 | /* Maximum number of entries is 4 */ |
243 | unsigned char new_ids[4]; | |
3540af8f | 244 | DECLARE_COMPLETION_ONSTACK(finish_resume); |
4020f2d7 | 245 | |
c13884a8 LA |
246 | if (WARN_ON(fm->num_sockets > ARRAY_SIZE(new_ids))) |
247 | return -ENXIO; | |
248 | ||
7146f0d3 | 249 | pci_set_power_state(dev, PCI_D0); |
4020f2d7 | 250 | pci_restore_state(dev); |
7146f0d3 AD |
251 | rc = pci_enable_device(dev); |
252 | if (rc) | |
253 | return rc; | |
254 | pci_set_master(dev); | |
255 | ||
256 | dev_dbg(&dev->dev, "resuming host\n"); | |
4020f2d7 | 257 | |
88de1b2f AD |
258 | for (rc = 0; rc < fm->num_sockets; rc++) |
259 | new_ids[rc] = tifm_7xx1_toggle_sock_power( | |
260 | tifm_7xx1_sock_addr(fm->addr, rc)); | |
4020f2d7 | 261 | spin_lock_irqsave(&fm->lock, flags); |
88de1b2f AD |
262 | for (rc = 0; rc < fm->num_sockets; rc++) { |
263 | if (fm->sockets[rc]) { | |
264 | if (fm->sockets[rc]->type == new_ids[rc]) | |
265 | good_sockets |= 1 << rc; | |
266 | else | |
267 | bad_sockets |= 1 << rc; | |
7146f0d3 AD |
268 | } |
269 | } | |
270 | ||
6412d927 | 271 | writel(TIFM_IRQ_ENABLE | TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1), |
7146f0d3 | 272 | fm->addr + FM_SET_INTERRUPT_ENABLE); |
88de1b2f AD |
273 | dev_dbg(&dev->dev, "change sets on resume: good %x, bad %x\n", |
274 | good_sockets, bad_sockets); | |
275 | ||
276 | fm->socket_change_set = 0; | |
277 | if (good_sockets) { | |
3540af8f | 278 | fm->finish_me = &finish_resume; |
7146f0d3 | 279 | spin_unlock_irqrestore(&fm->lock, flags); |
a819a228 NMG |
280 | timeout = wait_for_completion_timeout(&finish_resume, HZ); |
281 | dev_dbg(&dev->dev, "wait returned %lu\n", timeout); | |
88de1b2f AD |
282 | writel(TIFM_IRQ_FIFOMASK(good_sockets) |
283 | | TIFM_IRQ_CARDMASK(good_sockets), | |
284 | fm->addr + FM_CLEAR_INTERRUPT_ENABLE); | |
285 | writel(TIFM_IRQ_FIFOMASK(good_sockets) | |
286 | | TIFM_IRQ_CARDMASK(good_sockets), | |
287 | fm->addr + FM_SET_INTERRUPT_ENABLE); | |
288 | spin_lock_irqsave(&fm->lock, flags); | |
289 | fm->finish_me = NULL; | |
290 | fm->socket_change_set ^= good_sockets & fm->socket_change_set; | |
7146f0d3 AD |
291 | } |
292 | ||
88de1b2f AD |
293 | fm->socket_change_set |= bad_sockets; |
294 | if (fm->socket_change_set) | |
295 | tifm_queue_work(&fm->media_switcher); | |
7146f0d3 | 296 | |
88de1b2f | 297 | spin_unlock_irqrestore(&fm->lock, flags); |
7146f0d3 AD |
298 | writel(TIFM_IRQ_ENABLE, |
299 | fm->addr + FM_SET_INTERRUPT_ENABLE); | |
7146f0d3 | 300 | |
4020f2d7 AD |
301 | return 0; |
302 | } | |
303 | ||
7146f0d3 AD |
304 | #else |
305 | ||
306 | #define tifm_7xx1_suspend NULL | |
307 | #define tifm_7xx1_resume NULL | |
308 | ||
309 | #endif /* CONFIG_PM */ | |
310 | ||
baf8532a AD |
311 | static int tifm_7xx1_dummy_has_ms_pif(struct tifm_adapter *fm, |
312 | struct tifm_dev *sock) | |
313 | { | |
314 | return 0; | |
315 | } | |
316 | ||
317 | static int tifm_7xx1_has_ms_pif(struct tifm_adapter *fm, struct tifm_dev *sock) | |
318 | { | |
319 | if (((fm->num_sockets == 4) && (sock->socket_id == 2)) | |
320 | || ((fm->num_sockets == 2) && (sock->socket_id == 0))) | |
321 | return 1; | |
322 | ||
323 | return 0; | |
324 | } | |
325 | ||
4020f2d7 | 326 | static int tifm_7xx1_probe(struct pci_dev *dev, |
8b40adab | 327 | const struct pci_device_id *dev_id) |
4020f2d7 AD |
328 | { |
329 | struct tifm_adapter *fm; | |
330 | int pci_dev_busy = 0; | |
331 | int rc; | |
332 | ||
284901a9 | 333 | rc = pci_set_dma_mask(dev, DMA_BIT_MASK(32)); |
4020f2d7 AD |
334 | if (rc) |
335 | return rc; | |
336 | ||
337 | rc = pci_enable_device(dev); | |
338 | if (rc) | |
339 | return rc; | |
340 | ||
341 | pci_set_master(dev); | |
342 | ||
343 | rc = pci_request_regions(dev, DRIVER_NAME); | |
344 | if (rc) { | |
345 | pci_dev_busy = 1; | |
346 | goto err_out; | |
347 | } | |
348 | ||
349 | pci_intx(dev, 1); | |
350 | ||
6113ed73 AD |
351 | fm = tifm_alloc_adapter(dev->device == PCI_DEVICE_ID_TI_XX21_XX11_FM |
352 | ? 4 : 2, &dev->dev); | |
4020f2d7 AD |
353 | if (!fm) { |
354 | rc = -ENOMEM; | |
355 | goto err_out_int; | |
356 | } | |
357 | ||
3540af8f | 358 | INIT_WORK(&fm->media_switcher, tifm_7xx1_switch_media); |
4020f2d7 | 359 | fm->eject = tifm_7xx1_eject; |
baf8532a | 360 | fm->has_ms_pif = tifm_7xx1_has_ms_pif; |
4020f2d7 AD |
361 | pci_set_drvdata(dev, fm); |
362 | ||
bdbeed75 | 363 | fm->addr = pci_ioremap_bar(dev, 0); |
86d6275a WY |
364 | if (!fm->addr) { |
365 | rc = -ENODEV; | |
4020f2d7 | 366 | goto err_out_free; |
86d6275a | 367 | } |
4020f2d7 | 368 | |
bc913b18 | 369 | rc = request_irq(dev->irq, tifm_7xx1_isr, IRQF_SHARED, DRIVER_NAME, fm); |
4020f2d7 AD |
370 | if (rc) |
371 | goto err_out_unmap; | |
372 | ||
3540af8f | 373 | rc = tifm_add_adapter(fm); |
4020f2d7 AD |
374 | if (rc) |
375 | goto err_out_irq; | |
376 | ||
e4c70e85 AD |
377 | writel(TIFM_IRQ_ENABLE | TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1), |
378 | fm->addr + FM_CLEAR_INTERRUPT_ENABLE); | |
6412d927 | 379 | writel(TIFM_IRQ_ENABLE | TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1), |
8b40adab | 380 | fm->addr + FM_SET_INTERRUPT_ENABLE); |
4020f2d7 AD |
381 | return 0; |
382 | ||
383 | err_out_irq: | |
384 | free_irq(dev->irq, fm); | |
385 | err_out_unmap: | |
386 | iounmap(fm->addr); | |
387 | err_out_free: | |
4020f2d7 AD |
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); | |
055b8224 | 401 | int cnt; |
4020f2d7 | 402 | |
6113ed73 | 403 | fm->eject = tifm_7xx1_dummy_eject; |
baf8532a | 404 | fm->has_ms_pif = tifm_7xx1_dummy_has_ms_pif; |
7146f0d3 AD |
405 | writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE); |
406 | mmiowb(); | |
407 | free_irq(dev->irq, fm); | |
408 | ||
4020f2d7 AD |
409 | tifm_remove_adapter(fm); |
410 | ||
055b8224 AD |
411 | for (cnt = 0; cnt < fm->num_sockets; cnt++) |
412 | tifm_7xx1_sock_power_off(tifm_7xx1_sock_addr(fm->addr, cnt)); | |
413 | ||
4020f2d7 AD |
414 | iounmap(fm->addr); |
415 | pci_intx(dev, 0); | |
416 | pci_release_regions(dev); | |
417 | ||
418 | pci_disable_device(dev); | |
419 | tifm_free_adapter(fm); | |
420 | } | |
421 | ||
404147ba | 422 | static const struct pci_device_id tifm_7xx1_pci_tbl[] = { |
b5ad6761 AD |
423 | { PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX21_XX11_FM, PCI_ANY_ID, |
424 | PCI_ANY_ID, 0, 0, 0 }, /* xx21 - the one I have */ | |
425 | { PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX12_FM, PCI_ANY_ID, | |
426 | PCI_ANY_ID, 0, 0, 0 }, | |
427 | { PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX20_FM, PCI_ANY_ID, | |
428 | PCI_ANY_ID, 0, 0, 0 }, | |
4020f2d7 AD |
429 | { } |
430 | }; | |
431 | ||
432 | static struct pci_driver tifm_7xx1_driver = { | |
433 | .name = DRIVER_NAME, | |
434 | .id_table = tifm_7xx1_pci_tbl, | |
435 | .probe = tifm_7xx1_probe, | |
436 | .remove = tifm_7xx1_remove, | |
437 | .suspend = tifm_7xx1_suspend, | |
438 | .resume = tifm_7xx1_resume, | |
439 | }; | |
440 | ||
7e0b2cde | 441 | module_pci_driver(tifm_7xx1_driver); |
4020f2d7 AD |
442 | MODULE_AUTHOR("Alex Dubov"); |
443 | MODULE_DESCRIPTION("TI FlashMedia host driver"); | |
444 | MODULE_LICENSE("GPL"); | |
445 | MODULE_DEVICE_TABLE(pci, tifm_7xx1_pci_tbl); | |
446 | MODULE_VERSION(DRIVER_VERSION); |