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Commit | Line | Data |
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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
4020f2d7 AD |
2 | /* |
3 | * tifm_7xx1.c - TI FlashMedia driver | |
4 | * | |
5 | * Copyright (C) 2006 Alex Dubov <oakad@yahoo.com> | |
4020f2d7 AD |
6 | */ |
7 | ||
8 | #include <linux/tifm.h> | |
c4030698 | 9 | #include <linux/dma-mapping.h> |
eb12a679 | 10 | #include <linux/module.h> |
4020f2d7 AD |
11 | |
12 | #define DRIVER_NAME "tifm_7xx1" | |
4552f0cb AD |
13 | #define DRIVER_VERSION "0.8" |
14 | ||
15 | #define TIFM_IRQ_ENABLE 0x80000000 | |
16 | #define TIFM_IRQ_SOCKMASK(x) (x) | |
17 | #define TIFM_IRQ_CARDMASK(x) ((x) << 8) | |
18 | #define TIFM_IRQ_FIFOMASK(x) ((x) << 16) | |
19 | #define TIFM_IRQ_SETALL 0xffffffff | |
4020f2d7 | 20 | |
6113ed73 AD |
21 | static void tifm_7xx1_dummy_eject(struct tifm_adapter *fm, |
22 | struct tifm_dev *sock) | |
23 | { | |
24 | } | |
25 | ||
4020f2d7 AD |
26 | static void tifm_7xx1_eject(struct tifm_adapter *fm, struct tifm_dev *sock) |
27 | { | |
4020f2d7 AD |
28 | unsigned long flags; |
29 | ||
30 | spin_lock_irqsave(&fm->lock, flags); | |
7146f0d3 | 31 | fm->socket_change_set |= 1 << sock->socket_id; |
3540af8f | 32 | tifm_queue_work(&fm->media_switcher); |
4020f2d7 AD |
33 | spin_unlock_irqrestore(&fm->lock, flags); |
34 | } | |
35 | ||
7d12e780 | 36 | static irqreturn_t tifm_7xx1_isr(int irq, void *dev_id) |
4020f2d7 AD |
37 | { |
38 | struct tifm_adapter *fm = dev_id; | |
217334d1 | 39 | struct tifm_dev *sock; |
91f8d011 | 40 | unsigned int irq_status, cnt; |
4020f2d7 AD |
41 | |
42 | spin_lock(&fm->lock); | |
43 | irq_status = readl(fm->addr + FM_INTERRUPT_STATUS); | |
44 | if (irq_status == 0 || irq_status == (~0)) { | |
45 | spin_unlock(&fm->lock); | |
46 | return IRQ_NONE; | |
47 | } | |
48 | ||
49 | if (irq_status & TIFM_IRQ_ENABLE) { | |
50 | writel(TIFM_IRQ_ENABLE, fm->addr + FM_CLEAR_INTERRUPT_ENABLE); | |
51 | ||
8b40adab | 52 | for (cnt = 0; cnt < fm->num_sockets; cnt++) { |
217334d1 | 53 | sock = fm->sockets[cnt]; |
4552f0cb AD |
54 | if (sock) { |
55 | if ((irq_status >> cnt) & TIFM_IRQ_FIFOMASK(1)) | |
56 | sock->data_event(sock); | |
57 | if ((irq_status >> cnt) & TIFM_IRQ_CARDMASK(1)) | |
58 | sock->card_event(sock); | |
59 | } | |
4020f2d7 | 60 | } |
6412d927 | 61 | |
8b40adab AD |
62 | fm->socket_change_set |= irq_status |
63 | & ((1 << fm->num_sockets) - 1); | |
4020f2d7 AD |
64 | } |
65 | writel(irq_status, fm->addr + FM_INTERRUPT_STATUS); | |
66 | ||
3540af8f AD |
67 | if (fm->finish_me) |
68 | complete_all(fm->finish_me); | |
69 | else if (!fm->socket_change_set) | |
7146f0d3 AD |
70 | writel(TIFM_IRQ_ENABLE, fm->addr + FM_SET_INTERRUPT_ENABLE); |
71 | else | |
3540af8f | 72 | tifm_queue_work(&fm->media_switcher); |
4020f2d7 AD |
73 | |
74 | spin_unlock(&fm->lock); | |
75 | return IRQ_HANDLED; | |
76 | } | |
77 | ||
342c0ec4 | 78 | static unsigned char tifm_7xx1_toggle_sock_power(char __iomem *sock_addr) |
4020f2d7 AD |
79 | { |
80 | unsigned int s_state; | |
81 | int cnt; | |
82 | ||
83 | writel(0x0e00, sock_addr + SOCK_CONTROL); | |
84 | ||
342c0ec4 | 85 | for (cnt = 16; cnt <= 256; cnt <<= 1) { |
8b40adab AD |
86 | if (!(TIFM_SOCK_STATE_POWERED |
87 | & readl(sock_addr + SOCK_PRESENT_STATE))) | |
4020f2d7 | 88 | break; |
342c0ec4 AD |
89 | |
90 | msleep(cnt); | |
4020f2d7 AD |
91 | } |
92 | ||
93 | s_state = readl(sock_addr + SOCK_PRESENT_STATE); | |
94 | if (!(TIFM_SOCK_STATE_OCCUPIED & s_state)) | |
e23f2b8a | 95 | return 0; |
4020f2d7 | 96 | |
342c0ec4 AD |
97 | writel(readl(sock_addr + SOCK_CONTROL) | TIFM_CTRL_LED, |
98 | sock_addr + SOCK_CONTROL); | |
4020f2d7 | 99 | |
342c0ec4 AD |
100 | /* xd needs some extra time before power on */ |
101 | if (((readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7) | |
102 | == TIFM_TYPE_XD) | |
103 | msleep(40); | |
104 | ||
055b8224 AD |
105 | writel((s_state & TIFM_CTRL_POWER_MASK) | 0x0c00, |
106 | sock_addr + SOCK_CONTROL); | |
342c0ec4 AD |
107 | /* wait for power to stabilize */ |
108 | msleep(20); | |
109 | for (cnt = 16; cnt <= 256; cnt <<= 1) { | |
8b40adab AD |
110 | if ((TIFM_SOCK_STATE_POWERED |
111 | & readl(sock_addr + SOCK_PRESENT_STATE))) | |
4020f2d7 | 112 | break; |
342c0ec4 AD |
113 | |
114 | msleep(cnt); | |
4020f2d7 AD |
115 | } |
116 | ||
342c0ec4 AD |
117 | writel(readl(sock_addr + SOCK_CONTROL) & (~TIFM_CTRL_LED), |
118 | sock_addr + SOCK_CONTROL); | |
4020f2d7 AD |
119 | |
120 | return (readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7; | |
121 | } | |
122 | ||
055b8224 AD |
123 | inline static void tifm_7xx1_sock_power_off(char __iomem *sock_addr) |
124 | { | |
125 | writel((~TIFM_CTRL_POWER_MASK) & readl(sock_addr + SOCK_CONTROL), | |
126 | sock_addr + SOCK_CONTROL); | |
127 | } | |
128 | ||
e069d79d AV |
129 | inline static char __iomem * |
130 | tifm_7xx1_sock_addr(char __iomem *base_addr, unsigned int sock_num) | |
4020f2d7 AD |
131 | { |
132 | return base_addr + ((sock_num + 1) << 10); | |
133 | } | |
134 | ||
3540af8f | 135 | static void tifm_7xx1_switch_media(struct work_struct *work) |
4020f2d7 | 136 | { |
3540af8f AD |
137 | struct tifm_adapter *fm = container_of(work, struct tifm_adapter, |
138 | media_switcher); | |
91f8d011 | 139 | struct tifm_dev *sock; |
055b8224 | 140 | char __iomem *sock_addr; |
4020f2d7 | 141 | unsigned long flags; |
e23f2b8a | 142 | unsigned char media_id; |
91f8d011 | 143 | unsigned int socket_change_set, cnt; |
4020f2d7 | 144 | |
3540af8f AD |
145 | spin_lock_irqsave(&fm->lock, flags); |
146 | socket_change_set = fm->socket_change_set; | |
147 | fm->socket_change_set = 0; | |
6412d927 | 148 | |
7dd817d0 | 149 | dev_dbg(fm->dev.parent, "checking media set %x\n", |
3540af8f | 150 | socket_change_set); |
6412d927 | 151 | |
3540af8f | 152 | if (!socket_change_set) { |
4020f2d7 | 153 | spin_unlock_irqrestore(&fm->lock, flags); |
3540af8f AD |
154 | return; |
155 | } | |
4020f2d7 | 156 | |
2428a8fe AD |
157 | for (cnt = 0; cnt < fm->num_sockets; cnt++) { |
158 | if (!(socket_change_set & (1 << cnt))) | |
159 | continue; | |
160 | sock = fm->sockets[cnt]; | |
161 | if (sock) { | |
162 | printk(KERN_INFO | |
163 | "%s : demand removing card from socket %u:%u\n", | |
0bad16aa | 164 | dev_name(&fm->dev), fm->id, cnt); |
2428a8fe | 165 | fm->sockets[cnt] = NULL; |
055b8224 | 166 | sock_addr = sock->addr; |
6412d927 | 167 | spin_unlock_irqrestore(&fm->lock, flags); |
2428a8fe AD |
168 | device_unregister(&sock->dev); |
169 | spin_lock_irqsave(&fm->lock, flags); | |
055b8224 AD |
170 | tifm_7xx1_sock_power_off(sock_addr); |
171 | writel(0x0e00, sock_addr + SOCK_CONTROL); | |
2428a8fe AD |
172 | } |
173 | ||
174 | spin_unlock_irqrestore(&fm->lock, flags); | |
175 | ||
176 | media_id = tifm_7xx1_toggle_sock_power( | |
177 | tifm_7xx1_sock_addr(fm->addr, cnt)); | |
178 | ||
179 | // tifm_alloc_device will check if media_id is valid | |
180 | sock = tifm_alloc_device(fm, cnt, media_id); | |
181 | if (sock) { | |
182 | sock->addr = tifm_7xx1_sock_addr(fm->addr, cnt); | |
183 | ||
184 | if (!device_register(&sock->dev)) { | |
6412d927 | 185 | spin_lock_irqsave(&fm->lock, flags); |
2428a8fe AD |
186 | if (!fm->sockets[cnt]) { |
187 | fm->sockets[cnt] = sock; | |
188 | sock = NULL; | |
189 | } | |
190 | spin_unlock_irqrestore(&fm->lock, flags); | |
6412d927 | 191 | } |
2428a8fe AD |
192 | if (sock) |
193 | tifm_free_device(&sock->dev); | |
6412d927 | 194 | } |
2428a8fe AD |
195 | spin_lock_irqsave(&fm->lock, flags); |
196 | } | |
6412d927 | 197 | |
3540af8f AD |
198 | writel(TIFM_IRQ_FIFOMASK(socket_change_set) |
199 | | TIFM_IRQ_CARDMASK(socket_change_set), | |
200 | fm->addr + FM_CLEAR_INTERRUPT_ENABLE); | |
201 | ||
202 | writel(TIFM_IRQ_FIFOMASK(socket_change_set) | |
203 | | TIFM_IRQ_CARDMASK(socket_change_set), | |
204 | fm->addr + FM_SET_INTERRUPT_ENABLE); | |
205 | ||
206 | writel(TIFM_IRQ_ENABLE, fm->addr + FM_SET_INTERRUPT_ENABLE); | |
207 | spin_unlock_irqrestore(&fm->lock, flags); | |
4020f2d7 AD |
208 | } |
209 | ||
ff249c1c | 210 | static int __maybe_unused tifm_7xx1_suspend(struct device *dev_d) |
4020f2d7 | 211 | { |
ff249c1c | 212 | struct pci_dev *dev = to_pci_dev(dev_d); |
055b8224 AD |
213 | struct tifm_adapter *fm = pci_get_drvdata(dev); |
214 | int cnt; | |
215 | ||
7146f0d3 | 216 | dev_dbg(&dev->dev, "suspending host\n"); |
4020f2d7 | 217 | |
055b8224 AD |
218 | for (cnt = 0; cnt < fm->num_sockets; cnt++) { |
219 | if (fm->sockets[cnt]) | |
220 | tifm_7xx1_sock_power_off(fm->sockets[cnt]->addr); | |
221 | } | |
222 | ||
ff249c1c | 223 | device_wakeup_disable(dev_d); |
4020f2d7 AD |
224 | return 0; |
225 | } | |
226 | ||
ff249c1c | 227 | static int __maybe_unused tifm_7xx1_resume(struct device *dev_d) |
4020f2d7 | 228 | { |
ff249c1c | 229 | struct pci_dev *dev = to_pci_dev(dev_d); |
4020f2d7 | 230 | struct tifm_adapter *fm = pci_get_drvdata(dev); |
88de1b2f | 231 | int rc; |
a819a228 | 232 | unsigned long timeout; |
88de1b2f | 233 | unsigned int good_sockets = 0, bad_sockets = 0; |
4020f2d7 | 234 | unsigned long flags; |
c13884a8 LA |
235 | /* Maximum number of entries is 4 */ |
236 | unsigned char new_ids[4]; | |
3540af8f | 237 | DECLARE_COMPLETION_ONSTACK(finish_resume); |
4020f2d7 | 238 | |
c13884a8 LA |
239 | if (WARN_ON(fm->num_sockets > ARRAY_SIZE(new_ids))) |
240 | return -ENXIO; | |
241 | ||
7146f0d3 AD |
242 | pci_set_master(dev); |
243 | ||
244 | dev_dbg(&dev->dev, "resuming host\n"); | |
4020f2d7 | 245 | |
88de1b2f AD |
246 | for (rc = 0; rc < fm->num_sockets; rc++) |
247 | new_ids[rc] = tifm_7xx1_toggle_sock_power( | |
248 | tifm_7xx1_sock_addr(fm->addr, rc)); | |
4020f2d7 | 249 | spin_lock_irqsave(&fm->lock, flags); |
88de1b2f AD |
250 | for (rc = 0; rc < fm->num_sockets; rc++) { |
251 | if (fm->sockets[rc]) { | |
252 | if (fm->sockets[rc]->type == new_ids[rc]) | |
253 | good_sockets |= 1 << rc; | |
254 | else | |
255 | bad_sockets |= 1 << rc; | |
7146f0d3 AD |
256 | } |
257 | } | |
258 | ||
6412d927 | 259 | writel(TIFM_IRQ_ENABLE | TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1), |
7146f0d3 | 260 | fm->addr + FM_SET_INTERRUPT_ENABLE); |
88de1b2f AD |
261 | dev_dbg(&dev->dev, "change sets on resume: good %x, bad %x\n", |
262 | good_sockets, bad_sockets); | |
263 | ||
264 | fm->socket_change_set = 0; | |
265 | if (good_sockets) { | |
3540af8f | 266 | fm->finish_me = &finish_resume; |
7146f0d3 | 267 | spin_unlock_irqrestore(&fm->lock, flags); |
a819a228 NMG |
268 | timeout = wait_for_completion_timeout(&finish_resume, HZ); |
269 | dev_dbg(&dev->dev, "wait returned %lu\n", timeout); | |
88de1b2f AD |
270 | writel(TIFM_IRQ_FIFOMASK(good_sockets) |
271 | | TIFM_IRQ_CARDMASK(good_sockets), | |
272 | fm->addr + FM_CLEAR_INTERRUPT_ENABLE); | |
273 | writel(TIFM_IRQ_FIFOMASK(good_sockets) | |
274 | | TIFM_IRQ_CARDMASK(good_sockets), | |
275 | fm->addr + FM_SET_INTERRUPT_ENABLE); | |
276 | spin_lock_irqsave(&fm->lock, flags); | |
277 | fm->finish_me = NULL; | |
278 | fm->socket_change_set ^= good_sockets & fm->socket_change_set; | |
7146f0d3 AD |
279 | } |
280 | ||
88de1b2f AD |
281 | fm->socket_change_set |= bad_sockets; |
282 | if (fm->socket_change_set) | |
283 | tifm_queue_work(&fm->media_switcher); | |
7146f0d3 | 284 | |
88de1b2f | 285 | spin_unlock_irqrestore(&fm->lock, flags); |
7146f0d3 AD |
286 | writel(TIFM_IRQ_ENABLE, |
287 | fm->addr + FM_SET_INTERRUPT_ENABLE); | |
7146f0d3 | 288 | |
4020f2d7 AD |
289 | return 0; |
290 | } | |
291 | ||
baf8532a AD |
292 | static int tifm_7xx1_dummy_has_ms_pif(struct tifm_adapter *fm, |
293 | struct tifm_dev *sock) | |
294 | { | |
295 | return 0; | |
296 | } | |
297 | ||
298 | static int tifm_7xx1_has_ms_pif(struct tifm_adapter *fm, struct tifm_dev *sock) | |
299 | { | |
300 | if (((fm->num_sockets == 4) && (sock->socket_id == 2)) | |
301 | || ((fm->num_sockets == 2) && (sock->socket_id == 0))) | |
302 | return 1; | |
303 | ||
304 | return 0; | |
305 | } | |
306 | ||
4020f2d7 | 307 | static int tifm_7xx1_probe(struct pci_dev *dev, |
8b40adab | 308 | const struct pci_device_id *dev_id) |
4020f2d7 AD |
309 | { |
310 | struct tifm_adapter *fm; | |
311 | int pci_dev_busy = 0; | |
312 | int rc; | |
313 | ||
284901a9 | 314 | rc = pci_set_dma_mask(dev, DMA_BIT_MASK(32)); |
4020f2d7 AD |
315 | if (rc) |
316 | return rc; | |
317 | ||
318 | rc = pci_enable_device(dev); | |
319 | if (rc) | |
320 | return rc; | |
321 | ||
322 | pci_set_master(dev); | |
323 | ||
324 | rc = pci_request_regions(dev, DRIVER_NAME); | |
325 | if (rc) { | |
326 | pci_dev_busy = 1; | |
327 | goto err_out; | |
328 | } | |
329 | ||
330 | pci_intx(dev, 1); | |
331 | ||
6113ed73 AD |
332 | fm = tifm_alloc_adapter(dev->device == PCI_DEVICE_ID_TI_XX21_XX11_FM |
333 | ? 4 : 2, &dev->dev); | |
4020f2d7 AD |
334 | if (!fm) { |
335 | rc = -ENOMEM; | |
336 | goto err_out_int; | |
337 | } | |
338 | ||
3540af8f | 339 | INIT_WORK(&fm->media_switcher, tifm_7xx1_switch_media); |
4020f2d7 | 340 | fm->eject = tifm_7xx1_eject; |
baf8532a | 341 | fm->has_ms_pif = tifm_7xx1_has_ms_pif; |
4020f2d7 AD |
342 | pci_set_drvdata(dev, fm); |
343 | ||
bdbeed75 | 344 | fm->addr = pci_ioremap_bar(dev, 0); |
86d6275a WY |
345 | if (!fm->addr) { |
346 | rc = -ENODEV; | |
4020f2d7 | 347 | goto err_out_free; |
86d6275a | 348 | } |
4020f2d7 | 349 | |
bc913b18 | 350 | rc = request_irq(dev->irq, tifm_7xx1_isr, IRQF_SHARED, DRIVER_NAME, fm); |
4020f2d7 AD |
351 | if (rc) |
352 | goto err_out_unmap; | |
353 | ||
3540af8f | 354 | rc = tifm_add_adapter(fm); |
4020f2d7 AD |
355 | if (rc) |
356 | goto err_out_irq; | |
357 | ||
e4c70e85 AD |
358 | writel(TIFM_IRQ_ENABLE | TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1), |
359 | fm->addr + FM_CLEAR_INTERRUPT_ENABLE); | |
6412d927 | 360 | writel(TIFM_IRQ_ENABLE | TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1), |
8b40adab | 361 | fm->addr + FM_SET_INTERRUPT_ENABLE); |
4020f2d7 AD |
362 | return 0; |
363 | ||
364 | err_out_irq: | |
365 | free_irq(dev->irq, fm); | |
366 | err_out_unmap: | |
367 | iounmap(fm->addr); | |
368 | err_out_free: | |
4020f2d7 AD |
369 | tifm_free_adapter(fm); |
370 | err_out_int: | |
371 | pci_intx(dev, 0); | |
372 | pci_release_regions(dev); | |
373 | err_out: | |
374 | if (!pci_dev_busy) | |
375 | pci_disable_device(dev); | |
376 | return rc; | |
377 | } | |
378 | ||
379 | static void tifm_7xx1_remove(struct pci_dev *dev) | |
380 | { | |
381 | struct tifm_adapter *fm = pci_get_drvdata(dev); | |
055b8224 | 382 | int cnt; |
4020f2d7 | 383 | |
6113ed73 | 384 | fm->eject = tifm_7xx1_dummy_eject; |
baf8532a | 385 | fm->has_ms_pif = tifm_7xx1_dummy_has_ms_pif; |
7146f0d3 | 386 | writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE); |
7146f0d3 AD |
387 | free_irq(dev->irq, fm); |
388 | ||
4020f2d7 AD |
389 | tifm_remove_adapter(fm); |
390 | ||
055b8224 AD |
391 | for (cnt = 0; cnt < fm->num_sockets; cnt++) |
392 | tifm_7xx1_sock_power_off(tifm_7xx1_sock_addr(fm->addr, cnt)); | |
393 | ||
4020f2d7 AD |
394 | iounmap(fm->addr); |
395 | pci_intx(dev, 0); | |
396 | pci_release_regions(dev); | |
397 | ||
398 | pci_disable_device(dev); | |
399 | tifm_free_adapter(fm); | |
400 | } | |
401 | ||
404147ba | 402 | static const struct pci_device_id tifm_7xx1_pci_tbl[] = { |
b5ad6761 AD |
403 | { PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX21_XX11_FM, PCI_ANY_ID, |
404 | PCI_ANY_ID, 0, 0, 0 }, /* xx21 - the one I have */ | |
405 | { PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX12_FM, PCI_ANY_ID, | |
406 | PCI_ANY_ID, 0, 0, 0 }, | |
407 | { PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX20_FM, PCI_ANY_ID, | |
408 | PCI_ANY_ID, 0, 0, 0 }, | |
4020f2d7 AD |
409 | { } |
410 | }; | |
411 | ||
ff249c1c VG |
412 | static SIMPLE_DEV_PM_OPS(tifm_7xx1_pm_ops, tifm_7xx1_suspend, tifm_7xx1_resume); |
413 | ||
4020f2d7 AD |
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, | |
ff249c1c | 419 | .driver.pm = &tifm_7xx1_pm_ops, |
4020f2d7 AD |
420 | }; |
421 | ||
7e0b2cde | 422 | module_pci_driver(tifm_7xx1_driver); |
4020f2d7 AD |
423 | MODULE_AUTHOR("Alex Dubov"); |
424 | MODULE_DESCRIPTION("TI FlashMedia host driver"); | |
425 | MODULE_LICENSE("GPL"); | |
426 | MODULE_DEVICE_TABLE(pci, tifm_7xx1_pci_tbl); | |
427 | MODULE_VERSION(DRIVER_VERSION); |