Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Regular cardbus driver ("yenta_socket") | |
3 | * | |
4 | * (C) Copyright 1999, 2000 Linus Torvalds | |
5 | * | |
6 | * Changelog: | |
7 | * Aug 2002: Manfred Spraul <manfred@colorfullife.com> | |
8 | * Dynamically adjust the size of the bridge resource | |
9 | * | |
10 | * May 2003: Dominik Brodowski <linux@brodo.de> | |
11 | * Merge pci_socket.c and yenta.c into one file | |
12 | */ | |
13 | #include <linux/init.h> | |
14 | #include <linux/pci.h> | |
1da177e4 LT |
15 | #include <linux/workqueue.h> |
16 | #include <linux/interrupt.h> | |
17 | #include <linux/delay.h> | |
18 | #include <linux/module.h> | |
19 | ||
1da177e4 LT |
20 | #include <pcmcia/cs_types.h> |
21 | #include <pcmcia/ss.h> | |
22 | #include <pcmcia/cs.h> | |
23 | ||
24 | #include <asm/io.h> | |
25 | ||
26 | #include "yenta_socket.h" | |
27 | #include "i82365.h" | |
28 | ||
29 | static int disable_clkrun; | |
30 | module_param(disable_clkrun, bool, 0444); | |
31 | MODULE_PARM_DESC(disable_clkrun, "If PC card doesn't function properly, please try this option"); | |
32 | ||
fa912bcb DR |
33 | static int isa_probe = 1; |
34 | module_param(isa_probe, bool, 0444); | |
35 | MODULE_PARM_DESC(isa_probe, "If set ISA interrupts are probed (default). Set to N to disable probing"); | |
36 | ||
37 | static int pwr_irqs_off; | |
38 | module_param(pwr_irqs_off, bool, 0644); | |
39 | MODULE_PARM_DESC(pwr_irqs_off, "Force IRQs off during power-on of slot. Use only when seeing IRQ storms!"); | |
40 | ||
1da177e4 LT |
41 | #if 0 |
42 | #define debug(x,args...) printk(KERN_DEBUG "%s: " x, __func__ , ##args) | |
43 | #else | |
44 | #define debug(x,args...) | |
45 | #endif | |
46 | ||
47 | /* Don't ask.. */ | |
48 | #define to_cycles(ns) ((ns)/120) | |
49 | #define to_ns(cycles) ((cycles)*120) | |
50 | ||
63e7ebd0 DR |
51 | /** |
52 | * yenta PCI irq probing. | |
53 | * currently only used in the TI/EnE initialization code | |
54 | */ | |
55 | #ifdef CONFIG_YENTA_TI | |
1da177e4 | 56 | static int yenta_probe_cb_irq(struct yenta_socket *socket); |
63e7ebd0 | 57 | #endif |
1da177e4 LT |
58 | |
59 | ||
60 | static unsigned int override_bios; | |
61 | module_param(override_bios, uint, 0000); | |
62 | MODULE_PARM_DESC (override_bios, "yenta ignore bios resource allocation"); | |
63 | ||
64 | /* | |
65 | * Generate easy-to-use ways of reading a cardbus sockets | |
66 | * regular memory space ("cb_xxx"), configuration space | |
67 | * ("config_xxx") and compatibility space ("exca_xxxx") | |
68 | */ | |
69 | static inline u32 cb_readl(struct yenta_socket *socket, unsigned reg) | |
70 | { | |
71 | u32 val = readl(socket->base + reg); | |
72 | debug("%p %04x %08x\n", socket, reg, val); | |
73 | return val; | |
74 | } | |
75 | ||
76 | static inline void cb_writel(struct yenta_socket *socket, unsigned reg, u32 val) | |
77 | { | |
78 | debug("%p %04x %08x\n", socket, reg, val); | |
79 | writel(val, socket->base + reg); | |
c8751e4c | 80 | readl(socket->base + reg); /* avoid problems with PCI write posting */ |
1da177e4 LT |
81 | } |
82 | ||
83 | static inline u8 config_readb(struct yenta_socket *socket, unsigned offset) | |
84 | { | |
85 | u8 val; | |
86 | pci_read_config_byte(socket->dev, offset, &val); | |
87 | debug("%p %04x %02x\n", socket, offset, val); | |
88 | return val; | |
89 | } | |
90 | ||
91 | static inline u16 config_readw(struct yenta_socket *socket, unsigned offset) | |
92 | { | |
93 | u16 val; | |
94 | pci_read_config_word(socket->dev, offset, &val); | |
95 | debug("%p %04x %04x\n", socket, offset, val); | |
96 | return val; | |
97 | } | |
98 | ||
99 | static inline u32 config_readl(struct yenta_socket *socket, unsigned offset) | |
100 | { | |
101 | u32 val; | |
102 | pci_read_config_dword(socket->dev, offset, &val); | |
103 | debug("%p %04x %08x\n", socket, offset, val); | |
104 | return val; | |
105 | } | |
106 | ||
107 | static inline void config_writeb(struct yenta_socket *socket, unsigned offset, u8 val) | |
108 | { | |
109 | debug("%p %04x %02x\n", socket, offset, val); | |
110 | pci_write_config_byte(socket->dev, offset, val); | |
111 | } | |
112 | ||
113 | static inline void config_writew(struct yenta_socket *socket, unsigned offset, u16 val) | |
114 | { | |
115 | debug("%p %04x %04x\n", socket, offset, val); | |
116 | pci_write_config_word(socket->dev, offset, val); | |
117 | } | |
118 | ||
119 | static inline void config_writel(struct yenta_socket *socket, unsigned offset, u32 val) | |
120 | { | |
121 | debug("%p %04x %08x\n", socket, offset, val); | |
122 | pci_write_config_dword(socket->dev, offset, val); | |
123 | } | |
124 | ||
125 | static inline u8 exca_readb(struct yenta_socket *socket, unsigned reg) | |
126 | { | |
127 | u8 val = readb(socket->base + 0x800 + reg); | |
128 | debug("%p %04x %02x\n", socket, reg, val); | |
129 | return val; | |
130 | } | |
131 | ||
132 | static inline u8 exca_readw(struct yenta_socket *socket, unsigned reg) | |
133 | { | |
134 | u16 val; | |
135 | val = readb(socket->base + 0x800 + reg); | |
136 | val |= readb(socket->base + 0x800 + reg + 1) << 8; | |
137 | debug("%p %04x %04x\n", socket, reg, val); | |
138 | return val; | |
139 | } | |
140 | ||
141 | static inline void exca_writeb(struct yenta_socket *socket, unsigned reg, u8 val) | |
142 | { | |
143 | debug("%p %04x %02x\n", socket, reg, val); | |
144 | writeb(val, socket->base + 0x800 + reg); | |
c8751e4c | 145 | readb(socket->base + 0x800 + reg); /* PCI write posting... */ |
1da177e4 LT |
146 | } |
147 | ||
148 | static void exca_writew(struct yenta_socket *socket, unsigned reg, u16 val) | |
149 | { | |
150 | debug("%p %04x %04x\n", socket, reg, val); | |
151 | writeb(val, socket->base + 0x800 + reg); | |
152 | writeb(val >> 8, socket->base + 0x800 + reg + 1); | |
c8751e4c DR |
153 | |
154 | /* PCI write posting... */ | |
155 | readb(socket->base + 0x800 + reg); | |
156 | readb(socket->base + 0x800 + reg + 1); | |
1da177e4 LT |
157 | } |
158 | ||
030ee39c LT |
159 | static ssize_t show_yenta_registers(struct device *yentadev, struct device_attribute *attr, char *buf) |
160 | { | |
161 | struct pci_dev *dev = to_pci_dev(yentadev); | |
162 | struct yenta_socket *socket = pci_get_drvdata(dev); | |
163 | int offset = 0, i; | |
164 | ||
165 | offset = snprintf(buf, PAGE_SIZE, "CB registers:"); | |
166 | for (i = 0; i < 0x24; i += 4) { | |
167 | unsigned val; | |
168 | if (!(i & 15)) | |
169 | offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n%02x:", i); | |
170 | val = cb_readl(socket, i); | |
171 | offset += snprintf(buf + offset, PAGE_SIZE - offset, " %08x", val); | |
172 | } | |
173 | ||
174 | offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n\nExCA registers:"); | |
175 | for (i = 0; i < 0x45; i++) { | |
176 | unsigned char val; | |
177 | if (!(i & 7)) { | |
178 | if (i & 8) { | |
179 | memcpy(buf + offset, " -", 2); | |
180 | offset += 2; | |
181 | } else | |
182 | offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n%02x:", i); | |
183 | } | |
184 | val = exca_readb(socket, i); | |
185 | offset += snprintf(buf + offset, PAGE_SIZE - offset, " %02x", val); | |
186 | } | |
187 | buf[offset++] = '\n'; | |
188 | return offset; | |
189 | } | |
190 | ||
191 | static DEVICE_ATTR(yenta_registers, S_IRUSR, show_yenta_registers, NULL); | |
192 | ||
1da177e4 LT |
193 | /* |
194 | * Ugh, mixed-mode cardbus and 16-bit pccard state: things depend | |
195 | * on what kind of card is inserted.. | |
196 | */ | |
197 | static int yenta_get_status(struct pcmcia_socket *sock, unsigned int *value) | |
198 | { | |
199 | struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket); | |
200 | unsigned int val; | |
201 | u32 state = cb_readl(socket, CB_SOCKET_STATE); | |
202 | ||
203 | val = (state & CB_3VCARD) ? SS_3VCARD : 0; | |
204 | val |= (state & CB_XVCARD) ? SS_XVCARD : 0; | |
fa912bcb DR |
205 | val |= (state & (CB_5VCARD | CB_3VCARD | CB_XVCARD | CB_YVCARD)) ? 0 : SS_PENDING; |
206 | val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? SS_PENDING : 0; | |
207 | ||
1da177e4 LT |
208 | |
209 | if (state & CB_CBCARD) { | |
210 | val |= SS_CARDBUS; | |
211 | val |= (state & CB_CARDSTS) ? SS_STSCHG : 0; | |
212 | val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? 0 : SS_DETECT; | |
213 | val |= (state & CB_PWRCYCLE) ? SS_POWERON | SS_READY : 0; | |
fa912bcb | 214 | } else if (state & CB_16BITCARD) { |
1da177e4 LT |
215 | u8 status = exca_readb(socket, I365_STATUS); |
216 | val |= ((status & I365_CS_DETECT) == I365_CS_DETECT) ? SS_DETECT : 0; | |
217 | if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) { | |
218 | val |= (status & I365_CS_STSCHG) ? 0 : SS_STSCHG; | |
219 | } else { | |
220 | val |= (status & I365_CS_BVD1) ? 0 : SS_BATDEAD; | |
221 | val |= (status & I365_CS_BVD2) ? 0 : SS_BATWARN; | |
222 | } | |
223 | val |= (status & I365_CS_WRPROT) ? SS_WRPROT : 0; | |
224 | val |= (status & I365_CS_READY) ? SS_READY : 0; | |
225 | val |= (status & I365_CS_POWERON) ? SS_POWERON : 0; | |
226 | } | |
227 | ||
228 | *value = val; | |
229 | return 0; | |
230 | } | |
231 | ||
1da177e4 LT |
232 | static void yenta_set_power(struct yenta_socket *socket, socket_state_t *state) |
233 | { | |
ea2f1590 DR |
234 | /* some birdges require to use the ExCA registers to power 16bit cards */ |
235 | if (!(cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) && | |
236 | (socket->flags & YENTA_16BIT_POWER_EXCA)) { | |
237 | u8 reg, old; | |
238 | reg = old = exca_readb(socket, I365_POWER); | |
239 | reg &= ~(I365_VCC_MASK | I365_VPP1_MASK | I365_VPP2_MASK); | |
240 | ||
241 | /* i82365SL-DF style */ | |
242 | if (socket->flags & YENTA_16BIT_POWER_DF) { | |
243 | switch (state->Vcc) { | |
244 | case 33: reg |= I365_VCC_3V; break; | |
245 | case 50: reg |= I365_VCC_5V; break; | |
246 | default: reg = 0; break; | |
247 | } | |
248 | switch (state->Vpp) { | |
249 | case 33: | |
250 | case 50: reg |= I365_VPP1_5V; break; | |
251 | case 120: reg |= I365_VPP1_12V; break; | |
252 | } | |
253 | } else { | |
254 | /* i82365SL-B style */ | |
255 | switch (state->Vcc) { | |
256 | case 50: reg |= I365_VCC_5V; break; | |
257 | default: reg = 0; break; | |
258 | } | |
259 | switch (state->Vpp) { | |
260 | case 50: reg |= I365_VPP1_5V | I365_VPP2_5V; break; | |
261 | case 120: reg |= I365_VPP1_12V | I365_VPP2_12V; break; | |
262 | } | |
263 | } | |
264 | ||
265 | if (reg != old) | |
266 | exca_writeb(socket, I365_POWER, reg); | |
267 | } else { | |
268 | u32 reg = 0; /* CB_SC_STPCLK? */ | |
269 | switch (state->Vcc) { | |
270 | case 33: reg = CB_SC_VCC_3V; break; | |
271 | case 50: reg = CB_SC_VCC_5V; break; | |
272 | default: reg = 0; break; | |
273 | } | |
274 | switch (state->Vpp) { | |
275 | case 33: reg |= CB_SC_VPP_3V; break; | |
276 | case 50: reg |= CB_SC_VPP_5V; break; | |
277 | case 120: reg |= CB_SC_VPP_12V; break; | |
278 | } | |
279 | if (reg != cb_readl(socket, CB_SOCKET_CONTROL)) | |
280 | cb_writel(socket, CB_SOCKET_CONTROL, reg); | |
1da177e4 | 281 | } |
1da177e4 LT |
282 | } |
283 | ||
284 | static int yenta_set_socket(struct pcmcia_socket *sock, socket_state_t *state) | |
285 | { | |
286 | struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket); | |
287 | u16 bridge; | |
288 | ||
d250a481 DR |
289 | /* if powering down: do it immediately */ |
290 | if (state->Vcc == 0) | |
291 | yenta_set_power(socket, state); | |
292 | ||
1da177e4 LT |
293 | socket->io_irq = state->io_irq; |
294 | bridge = config_readw(socket, CB_BRIDGE_CONTROL) & ~(CB_BRIDGE_CRST | CB_BRIDGE_INTR); | |
295 | if (cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) { | |
296 | u8 intr; | |
297 | bridge |= (state->flags & SS_RESET) ? CB_BRIDGE_CRST : 0; | |
298 | ||
299 | /* ISA interrupt control? */ | |
300 | intr = exca_readb(socket, I365_INTCTL); | |
301 | intr = (intr & ~0xf); | |
302 | if (!socket->cb_irq) { | |
303 | intr |= state->io_irq; | |
304 | bridge |= CB_BRIDGE_INTR; | |
305 | } | |
306 | exca_writeb(socket, I365_INTCTL, intr); | |
307 | } else { | |
308 | u8 reg; | |
309 | ||
310 | reg = exca_readb(socket, I365_INTCTL) & (I365_RING_ENA | I365_INTR_ENA); | |
311 | reg |= (state->flags & SS_RESET) ? 0 : I365_PC_RESET; | |
312 | reg |= (state->flags & SS_IOCARD) ? I365_PC_IOCARD : 0; | |
313 | if (state->io_irq != socket->cb_irq) { | |
314 | reg |= state->io_irq; | |
315 | bridge |= CB_BRIDGE_INTR; | |
316 | } | |
317 | exca_writeb(socket, I365_INTCTL, reg); | |
318 | ||
319 | reg = exca_readb(socket, I365_POWER) & (I365_VCC_MASK|I365_VPP1_MASK); | |
320 | reg |= I365_PWR_NORESET; | |
321 | if (state->flags & SS_PWR_AUTO) reg |= I365_PWR_AUTO; | |
322 | if (state->flags & SS_OUTPUT_ENA) reg |= I365_PWR_OUT; | |
323 | if (exca_readb(socket, I365_POWER) != reg) | |
324 | exca_writeb(socket, I365_POWER, reg); | |
325 | ||
326 | /* CSC interrupt: no ISA irq for CSC */ | |
327 | reg = I365_CSC_DETECT; | |
328 | if (state->flags & SS_IOCARD) { | |
329 | if (state->csc_mask & SS_STSCHG) reg |= I365_CSC_STSCHG; | |
330 | } else { | |
331 | if (state->csc_mask & SS_BATDEAD) reg |= I365_CSC_BVD1; | |
332 | if (state->csc_mask & SS_BATWARN) reg |= I365_CSC_BVD2; | |
333 | if (state->csc_mask & SS_READY) reg |= I365_CSC_READY; | |
334 | } | |
335 | exca_writeb(socket, I365_CSCINT, reg); | |
336 | exca_readb(socket, I365_CSC); | |
337 | if(sock->zoom_video) | |
338 | sock->zoom_video(sock, state->flags & SS_ZVCARD); | |
339 | } | |
340 | config_writew(socket, CB_BRIDGE_CONTROL, bridge); | |
341 | /* Socket event mask: get card insert/remove events.. */ | |
342 | cb_writel(socket, CB_SOCKET_EVENT, -1); | |
343 | cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK); | |
d250a481 DR |
344 | |
345 | /* if powering up: do it as the last step when the socket is configured */ | |
346 | if (state->Vcc != 0) | |
347 | yenta_set_power(socket, state); | |
1da177e4 LT |
348 | return 0; |
349 | } | |
350 | ||
351 | static int yenta_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io) | |
352 | { | |
353 | struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket); | |
354 | int map; | |
355 | unsigned char ioctl, addr, enable; | |
356 | ||
357 | map = io->map; | |
358 | ||
359 | if (map > 1) | |
360 | return -EINVAL; | |
361 | ||
362 | enable = I365_ENA_IO(map); | |
363 | addr = exca_readb(socket, I365_ADDRWIN); | |
364 | ||
365 | /* Disable the window before changing it.. */ | |
366 | if (addr & enable) { | |
367 | addr &= ~enable; | |
368 | exca_writeb(socket, I365_ADDRWIN, addr); | |
369 | } | |
370 | ||
371 | exca_writew(socket, I365_IO(map)+I365_W_START, io->start); | |
372 | exca_writew(socket, I365_IO(map)+I365_W_STOP, io->stop); | |
373 | ||
374 | ioctl = exca_readb(socket, I365_IOCTL) & ~I365_IOCTL_MASK(map); | |
375 | if (io->flags & MAP_0WS) ioctl |= I365_IOCTL_0WS(map); | |
376 | if (io->flags & MAP_16BIT) ioctl |= I365_IOCTL_16BIT(map); | |
377 | if (io->flags & MAP_AUTOSZ) ioctl |= I365_IOCTL_IOCS16(map); | |
378 | exca_writeb(socket, I365_IOCTL, ioctl); | |
379 | ||
380 | if (io->flags & MAP_ACTIVE) | |
381 | exca_writeb(socket, I365_ADDRWIN, addr | enable); | |
382 | return 0; | |
383 | } | |
384 | ||
385 | static int yenta_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem) | |
386 | { | |
387 | struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket); | |
388 | struct pci_bus_region region; | |
389 | int map; | |
390 | unsigned char addr, enable; | |
391 | unsigned int start, stop, card_start; | |
392 | unsigned short word; | |
393 | ||
394 | pcibios_resource_to_bus(socket->dev, ®ion, mem->res); | |
395 | ||
396 | map = mem->map; | |
397 | start = region.start; | |
398 | stop = region.end; | |
399 | card_start = mem->card_start; | |
400 | ||
401 | if (map > 4 || start > stop || ((start ^ stop) >> 24) || | |
402 | (card_start >> 26) || mem->speed > 1000) | |
403 | return -EINVAL; | |
404 | ||
405 | enable = I365_ENA_MEM(map); | |
406 | addr = exca_readb(socket, I365_ADDRWIN); | |
407 | if (addr & enable) { | |
408 | addr &= ~enable; | |
409 | exca_writeb(socket, I365_ADDRWIN, addr); | |
410 | } | |
411 | ||
412 | exca_writeb(socket, CB_MEM_PAGE(map), start >> 24); | |
413 | ||
414 | word = (start >> 12) & 0x0fff; | |
415 | if (mem->flags & MAP_16BIT) | |
416 | word |= I365_MEM_16BIT; | |
417 | if (mem->flags & MAP_0WS) | |
418 | word |= I365_MEM_0WS; | |
419 | exca_writew(socket, I365_MEM(map) + I365_W_START, word); | |
420 | ||
421 | word = (stop >> 12) & 0x0fff; | |
422 | switch (to_cycles(mem->speed)) { | |
423 | case 0: break; | |
424 | case 1: word |= I365_MEM_WS0; break; | |
425 | case 2: word |= I365_MEM_WS1; break; | |
426 | default: word |= I365_MEM_WS1 | I365_MEM_WS0; break; | |
427 | } | |
428 | exca_writew(socket, I365_MEM(map) + I365_W_STOP, word); | |
429 | ||
430 | word = ((card_start - start) >> 12) & 0x3fff; | |
431 | if (mem->flags & MAP_WRPROT) | |
432 | word |= I365_MEM_WRPROT; | |
433 | if (mem->flags & MAP_ATTRIB) | |
434 | word |= I365_MEM_REG; | |
435 | exca_writew(socket, I365_MEM(map) + I365_W_OFF, word); | |
436 | ||
437 | if (mem->flags & MAP_ACTIVE) | |
438 | exca_writeb(socket, I365_ADDRWIN, addr | enable); | |
439 | return 0; | |
440 | } | |
441 | ||
442 | ||
fa912bcb | 443 | |
7d12e780 | 444 | static irqreturn_t yenta_interrupt(int irq, void *dev_id) |
1da177e4 | 445 | { |
fa912bcb DR |
446 | unsigned int events; |
447 | struct yenta_socket *socket = (struct yenta_socket *) dev_id; | |
1da177e4 LT |
448 | u8 csc; |
449 | u32 cb_event; | |
1da177e4 LT |
450 | |
451 | /* Clear interrupt status for the event */ | |
452 | cb_event = cb_readl(socket, CB_SOCKET_EVENT); | |
453 | cb_writel(socket, CB_SOCKET_EVENT, cb_event); | |
454 | ||
455 | csc = exca_readb(socket, I365_CSC); | |
456 | ||
e4115805 DR |
457 | if (!(cb_event || csc)) |
458 | return IRQ_NONE; | |
459 | ||
1da177e4 LT |
460 | events = (cb_event & (CB_CD1EVENT | CB_CD2EVENT)) ? SS_DETECT : 0 ; |
461 | events |= (csc & I365_CSC_DETECT) ? SS_DETECT : 0; | |
462 | if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) { | |
463 | events |= (csc & I365_CSC_STSCHG) ? SS_STSCHG : 0; | |
464 | } else { | |
465 | events |= (csc & I365_CSC_BVD1) ? SS_BATDEAD : 0; | |
466 | events |= (csc & I365_CSC_BVD2) ? SS_BATWARN : 0; | |
467 | events |= (csc & I365_CSC_READY) ? SS_READY : 0; | |
468 | } | |
1da177e4 | 469 | |
fa912bcb | 470 | if (events) |
1da177e4 | 471 | pcmcia_parse_events(&socket->socket, events); |
fa912bcb | 472 | |
e4115805 | 473 | return IRQ_HANDLED; |
1da177e4 LT |
474 | } |
475 | ||
476 | static void yenta_interrupt_wrapper(unsigned long data) | |
477 | { | |
478 | struct yenta_socket *socket = (struct yenta_socket *) data; | |
479 | ||
7d12e780 | 480 | yenta_interrupt(0, (void *)socket); |
1da177e4 LT |
481 | socket->poll_timer.expires = jiffies + HZ; |
482 | add_timer(&socket->poll_timer); | |
483 | } | |
484 | ||
485 | static void yenta_clear_maps(struct yenta_socket *socket) | |
486 | { | |
487 | int i; | |
488 | struct resource res = { .start = 0, .end = 0x0fff }; | |
489 | pccard_io_map io = { 0, 0, 0, 0, 1 }; | |
490 | pccard_mem_map mem = { .res = &res, }; | |
491 | ||
492 | yenta_set_socket(&socket->socket, &dead_socket); | |
493 | for (i = 0; i < 2; i++) { | |
494 | io.map = i; | |
495 | yenta_set_io_map(&socket->socket, &io); | |
496 | } | |
497 | for (i = 0; i < 5; i++) { | |
498 | mem.map = i; | |
499 | yenta_set_mem_map(&socket->socket, &mem); | |
500 | } | |
501 | } | |
502 | ||
fa912bcb DR |
503 | /* redoes voltage interrogation if required */ |
504 | static void yenta_interrogate(struct yenta_socket *socket) | |
505 | { | |
506 | u32 state; | |
507 | ||
508 | state = cb_readl(socket, CB_SOCKET_STATE); | |
509 | if (!(state & (CB_5VCARD | CB_3VCARD | CB_XVCARD | CB_YVCARD)) || | |
510 | (state & (CB_CDETECT1 | CB_CDETECT2 | CB_NOTACARD | CB_BADVCCREQ)) || | |
511 | ((state & (CB_16BITCARD | CB_CBCARD)) == (CB_16BITCARD | CB_CBCARD))) | |
512 | cb_writel(socket, CB_SOCKET_FORCE, CB_CVSTEST); | |
513 | } | |
514 | ||
1da177e4 LT |
515 | /* Called at resume and initialization events */ |
516 | static int yenta_sock_init(struct pcmcia_socket *sock) | |
517 | { | |
518 | struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket); | |
1da177e4 LT |
519 | |
520 | exca_writeb(socket, I365_GBLCTL, 0x00); | |
521 | exca_writeb(socket, I365_GENCTL, 0x00); | |
522 | ||
523 | /* Redo card voltage interrogation */ | |
fa912bcb | 524 | yenta_interrogate(socket); |
1da177e4 LT |
525 | |
526 | yenta_clear_maps(socket); | |
527 | ||
528 | if (socket->type && socket->type->sock_init) | |
529 | socket->type->sock_init(socket); | |
530 | ||
531 | /* Re-enable CSC interrupts */ | |
532 | cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK); | |
533 | ||
534 | return 0; | |
535 | } | |
536 | ||
537 | static int yenta_sock_suspend(struct pcmcia_socket *sock) | |
538 | { | |
539 | struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket); | |
540 | ||
541 | /* Disable CSC interrupts */ | |
542 | cb_writel(socket, CB_SOCKET_MASK, 0x0); | |
543 | ||
544 | return 0; | |
545 | } | |
546 | ||
547 | /* | |
548 | * Use an adaptive allocation for the memory resource, | |
549 | * sometimes the memory behind pci bridges is limited: | |
550 | * 1/8 of the size of the io window of the parent. | |
eb0a90b4 DB |
551 | * max 4 MB, min 16 kB. We try very hard to not get below |
552 | * the "ACC" values, though. | |
1da177e4 LT |
553 | */ |
554 | #define BRIDGE_MEM_MAX 4*1024*1024 | |
eb0a90b4 | 555 | #define BRIDGE_MEM_ACC 128*1024 |
1da177e4 LT |
556 | #define BRIDGE_MEM_MIN 16*1024 |
557 | ||
eb0a90b4 DB |
558 | #define BRIDGE_IO_MAX 512 |
559 | #define BRIDGE_IO_ACC 256 | |
1da177e4 LT |
560 | #define BRIDGE_IO_MIN 32 |
561 | ||
562 | #ifndef PCIBIOS_MIN_CARDBUS_IO | |
563 | #define PCIBIOS_MIN_CARDBUS_IO PCIBIOS_MIN_IO | |
564 | #endif | |
565 | ||
eb0a90b4 DB |
566 | static int yenta_search_one_res(struct resource *root, struct resource *res, |
567 | u32 min) | |
568 | { | |
569 | u32 align, size, start, end; | |
570 | ||
571 | if (res->flags & IORESOURCE_IO) { | |
572 | align = 1024; | |
573 | size = BRIDGE_IO_MAX; | |
574 | start = PCIBIOS_MIN_CARDBUS_IO; | |
575 | end = ~0U; | |
576 | } else { | |
577 | unsigned long avail = root->end - root->start; | |
578 | int i; | |
579 | size = BRIDGE_MEM_MAX; | |
580 | if (size > avail/8) { | |
581 | size=(avail+1)/8; | |
582 | /* round size down to next power of 2 */ | |
583 | i = 0; | |
584 | while ((size /= 2) != 0) | |
585 | i++; | |
586 | size = 1 << i; | |
587 | } | |
588 | if (size < min) | |
589 | size = min; | |
590 | align = size; | |
591 | start = PCIBIOS_MIN_MEM; | |
592 | end = ~0U; | |
593 | } | |
594 | ||
595 | do { | |
596 | if (allocate_resource(root, res, size, start, end, align, | |
597 | NULL, NULL)==0) { | |
598 | return 1; | |
599 | } | |
600 | size = size/2; | |
601 | align = size; | |
602 | } while (size >= min); | |
603 | ||
604 | return 0; | |
605 | } | |
606 | ||
607 | ||
608 | static int yenta_search_res(struct yenta_socket *socket, struct resource *res, | |
609 | u32 min) | |
610 | { | |
611 | int i; | |
612 | for (i=0; i<PCI_BUS_NUM_RESOURCES; i++) { | |
613 | struct resource * root = socket->dev->bus->resource[i]; | |
614 | if (!root) | |
615 | continue; | |
616 | ||
617 | if ((res->flags ^ root->flags) & | |
618 | (IORESOURCE_IO | IORESOURCE_MEM | IORESOURCE_PREFETCH)) | |
619 | continue; /* Wrong type */ | |
620 | ||
621 | if (yenta_search_one_res(root, res, min)) | |
622 | return 1; | |
623 | } | |
624 | return 0; | |
625 | } | |
626 | ||
b3743fa4 | 627 | static int yenta_allocate_res(struct yenta_socket *socket, int nr, unsigned type, int addr_start, int addr_end) |
1da177e4 | 628 | { |
1da177e4 | 629 | struct resource *root, *res; |
43c34735 | 630 | struct pci_bus_region region; |
1da177e4 LT |
631 | unsigned mask; |
632 | ||
7925407a IK |
633 | res = socket->dev->resource + PCI_BRIDGE_RESOURCES + nr; |
634 | /* Already allocated? */ | |
635 | if (res->parent) | |
b3743fa4 | 636 | return 0; |
7925407a | 637 | |
1da177e4 LT |
638 | /* The granularity of the memory limit is 4kB, on IO it's 4 bytes */ |
639 | mask = ~0xfff; | |
640 | if (type & IORESOURCE_IO) | |
641 | mask = ~3; | |
642 | ||
43c34735 | 643 | res->name = socket->dev->subordinate->name; |
1da177e4 | 644 | res->flags = type; |
1da177e4 | 645 | |
43c34735 DB |
646 | region.start = config_readl(socket, addr_start) & mask; |
647 | region.end = config_readl(socket, addr_end) | ~mask; | |
648 | if (region.start && region.end > region.start && !override_bios) { | |
649 | pcibios_bus_to_resource(socket->dev, res, ®ion); | |
862104e5 DB |
650 | root = pci_find_parent_resource(socket->dev, res); |
651 | if (root && (request_resource(root, res) == 0)) | |
b3743fa4 | 652 | return 0; |
862104e5 | 653 | printk(KERN_INFO "yenta %s: Preassigned resource %d busy or not available, reconfiguring...\n", |
1da177e4 | 654 | pci_name(socket->dev), nr); |
1da177e4 LT |
655 | } |
656 | ||
657 | if (type & IORESOURCE_IO) { | |
eb0a90b4 DB |
658 | if ((yenta_search_res(socket, res, BRIDGE_IO_MAX)) || |
659 | (yenta_search_res(socket, res, BRIDGE_IO_ACC)) || | |
b3743fa4 DB |
660 | (yenta_search_res(socket, res, BRIDGE_IO_MIN))) |
661 | return 1; | |
1da177e4 | 662 | } else { |
eb0a90b4 DB |
663 | if (type & IORESOURCE_PREFETCH) { |
664 | if ((yenta_search_res(socket, res, BRIDGE_MEM_MAX)) || | |
665 | (yenta_search_res(socket, res, BRIDGE_MEM_ACC)) || | |
b3743fa4 DB |
666 | (yenta_search_res(socket, res, BRIDGE_MEM_MIN))) |
667 | return 1; | |
eb0a90b4 DB |
668 | /* Approximating prefetchable by non-prefetchable */ |
669 | res->flags = IORESOURCE_MEM; | |
1da177e4 | 670 | } |
eb0a90b4 DB |
671 | if ((yenta_search_res(socket, res, BRIDGE_MEM_MAX)) || |
672 | (yenta_search_res(socket, res, BRIDGE_MEM_ACC)) || | |
b3743fa4 DB |
673 | (yenta_search_res(socket, res, BRIDGE_MEM_MIN))) |
674 | return 1; | |
eb0a90b4 DB |
675 | } |
676 | ||
1da177e4 | 677 | printk(KERN_INFO "yenta %s: no resource of type %x available, trying to continue...\n", |
eb0a90b4 DB |
678 | pci_name(socket->dev), type); |
679 | res->start = res->end = res->flags = 0; | |
b3743fa4 | 680 | return 0; |
1da177e4 LT |
681 | } |
682 | ||
683 | /* | |
684 | * Allocate the bridge mappings for the device.. | |
685 | */ | |
686 | static void yenta_allocate_resources(struct yenta_socket *socket) | |
687 | { | |
b3743fa4 DB |
688 | int program = 0; |
689 | program += yenta_allocate_res(socket, 0, IORESOURCE_IO, | |
27879835 | 690 | PCI_CB_IO_BASE_0, PCI_CB_IO_LIMIT_0); |
b3743fa4 | 691 | program += yenta_allocate_res(socket, 1, IORESOURCE_IO, |
27879835 | 692 | PCI_CB_IO_BASE_1, PCI_CB_IO_LIMIT_1); |
b3743fa4 | 693 | program += yenta_allocate_res(socket, 2, IORESOURCE_MEM|IORESOURCE_PREFETCH, |
27879835 | 694 | PCI_CB_MEMORY_BASE_0, PCI_CB_MEMORY_LIMIT_0); |
b3743fa4 | 695 | program += yenta_allocate_res(socket, 3, IORESOURCE_MEM, |
27879835 | 696 | PCI_CB_MEMORY_BASE_1, PCI_CB_MEMORY_LIMIT_1); |
b3743fa4 DB |
697 | if (program) |
698 | pci_setup_cardbus(socket->dev->subordinate); | |
1da177e4 LT |
699 | } |
700 | ||
701 | ||
702 | /* | |
703 | * Free the bridge mappings for the device.. | |
704 | */ | |
705 | static void yenta_free_resources(struct yenta_socket *socket) | |
706 | { | |
707 | int i; | |
708 | for (i=0;i<4;i++) { | |
709 | struct resource *res; | |
710 | res = socket->dev->resource + PCI_BRIDGE_RESOURCES + i; | |
711 | if (res->start != 0 && res->end != 0) | |
712 | release_resource(res); | |
b3743fa4 | 713 | res->start = res->end = res->flags = 0; |
1da177e4 LT |
714 | } |
715 | } | |
716 | ||
717 | ||
718 | /* | |
719 | * Close it down - release our resources and go home.. | |
720 | */ | |
721 | static void yenta_close(struct pci_dev *dev) | |
722 | { | |
723 | struct yenta_socket *sock = pci_get_drvdata(dev); | |
724 | ||
030ee39c LT |
725 | /* Remove the register attributes */ |
726 | device_remove_file(&dev->dev, &dev_attr_yenta_registers); | |
727 | ||
1da177e4 LT |
728 | /* we don't want a dying socket registered */ |
729 | pcmcia_unregister_socket(&sock->socket); | |
730 | ||
731 | /* Disable all events so we don't die in an IRQ storm */ | |
732 | cb_writel(sock, CB_SOCKET_MASK, 0x0); | |
733 | exca_writeb(sock, I365_CSCINT, 0); | |
734 | ||
735 | if (sock->cb_irq) | |
736 | free_irq(sock->cb_irq, sock); | |
737 | else | |
738 | del_timer_sync(&sock->poll_timer); | |
739 | ||
740 | if (sock->base) | |
741 | iounmap(sock->base); | |
742 | yenta_free_resources(sock); | |
743 | ||
744 | pci_release_regions(dev); | |
745 | pci_disable_device(dev); | |
746 | pci_set_drvdata(dev, NULL); | |
747 | } | |
748 | ||
749 | ||
750 | static struct pccard_operations yenta_socket_operations = { | |
751 | .init = yenta_sock_init, | |
752 | .suspend = yenta_sock_suspend, | |
753 | .get_status = yenta_get_status, | |
1da177e4 LT |
754 | .set_socket = yenta_set_socket, |
755 | .set_io_map = yenta_set_io_map, | |
756 | .set_mem_map = yenta_set_mem_map, | |
757 | }; | |
758 | ||
759 | ||
63e7ebd0 | 760 | #ifdef CONFIG_YENTA_TI |
1da177e4 | 761 | #include "ti113x.h" |
63e7ebd0 DR |
762 | #endif |
763 | #ifdef CONFIG_YENTA_RICOH | |
1da177e4 | 764 | #include "ricoh.h" |
63e7ebd0 DR |
765 | #endif |
766 | #ifdef CONFIG_YENTA_TOSHIBA | |
1da177e4 | 767 | #include "topic.h" |
63e7ebd0 DR |
768 | #endif |
769 | #ifdef CONFIG_YENTA_O2 | |
1da177e4 | 770 | #include "o2micro.h" |
63e7ebd0 | 771 | #endif |
1da177e4 LT |
772 | |
773 | enum { | |
774 | CARDBUS_TYPE_DEFAULT = -1, | |
775 | CARDBUS_TYPE_TI, | |
776 | CARDBUS_TYPE_TI113X, | |
777 | CARDBUS_TYPE_TI12XX, | |
778 | CARDBUS_TYPE_TI1250, | |
779 | CARDBUS_TYPE_RICOH, | |
ea2f1590 | 780 | CARDBUS_TYPE_TOPIC95, |
1da177e4 LT |
781 | CARDBUS_TYPE_TOPIC97, |
782 | CARDBUS_TYPE_O2MICRO, | |
8c3520d4 | 783 | CARDBUS_TYPE_ENE, |
1da177e4 LT |
784 | }; |
785 | ||
786 | /* | |
787 | * Different cardbus controllers have slightly different | |
788 | * initialization sequences etc details. List them here.. | |
789 | */ | |
790 | static struct cardbus_type cardbus_type[] = { | |
63e7ebd0 | 791 | #ifdef CONFIG_YENTA_TI |
1da177e4 LT |
792 | [CARDBUS_TYPE_TI] = { |
793 | .override = ti_override, | |
794 | .save_state = ti_save_state, | |
795 | .restore_state = ti_restore_state, | |
796 | .sock_init = ti_init, | |
797 | }, | |
798 | [CARDBUS_TYPE_TI113X] = { | |
799 | .override = ti113x_override, | |
800 | .save_state = ti_save_state, | |
801 | .restore_state = ti_restore_state, | |
802 | .sock_init = ti_init, | |
803 | }, | |
804 | [CARDBUS_TYPE_TI12XX] = { | |
805 | .override = ti12xx_override, | |
806 | .save_state = ti_save_state, | |
807 | .restore_state = ti_restore_state, | |
808 | .sock_init = ti_init, | |
809 | }, | |
810 | [CARDBUS_TYPE_TI1250] = { | |
811 | .override = ti1250_override, | |
812 | .save_state = ti_save_state, | |
813 | .restore_state = ti_restore_state, | |
814 | .sock_init = ti_init, | |
815 | }, | |
63e7ebd0 DR |
816 | #endif |
817 | #ifdef CONFIG_YENTA_RICOH | |
1da177e4 LT |
818 | [CARDBUS_TYPE_RICOH] = { |
819 | .override = ricoh_override, | |
820 | .save_state = ricoh_save_state, | |
821 | .restore_state = ricoh_restore_state, | |
822 | }, | |
63e7ebd0 DR |
823 | #endif |
824 | #ifdef CONFIG_YENTA_TOSHIBA | |
ea2f1590 DR |
825 | [CARDBUS_TYPE_TOPIC95] = { |
826 | .override = topic95_override, | |
827 | }, | |
1da177e4 LT |
828 | [CARDBUS_TYPE_TOPIC97] = { |
829 | .override = topic97_override, | |
830 | }, | |
63e7ebd0 DR |
831 | #endif |
832 | #ifdef CONFIG_YENTA_O2 | |
1da177e4 LT |
833 | [CARDBUS_TYPE_O2MICRO] = { |
834 | .override = o2micro_override, | |
835 | .restore_state = o2micro_restore_state, | |
836 | }, | |
63e7ebd0 DR |
837 | #endif |
838 | #ifdef CONFIG_YENTA_TI | |
8c3520d4 DR |
839 | [CARDBUS_TYPE_ENE] = { |
840 | .override = ene_override, | |
841 | .save_state = ti_save_state, | |
842 | .restore_state = ti_restore_state, | |
843 | .sock_init = ti_init, | |
844 | }, | |
63e7ebd0 | 845 | #endif |
1da177e4 LT |
846 | }; |
847 | ||
848 | ||
849 | /* | |
850 | * Only probe "regular" interrupts, don't | |
851 | * touch dangerous spots like the mouse irq, | |
852 | * because there are mice that apparently | |
853 | * get really confused if they get fondled | |
854 | * too intimately. | |
855 | * | |
856 | * Default to 11, 10, 9, 7, 6, 5, 4, 3. | |
857 | */ | |
858 | static u32 isa_interrupts = 0x0ef8; | |
859 | ||
860 | static unsigned int yenta_probe_irq(struct yenta_socket *socket, u32 isa_irq_mask) | |
861 | { | |
862 | int i; | |
863 | unsigned long val; | |
1da177e4 LT |
864 | u32 mask; |
865 | ||
1da177e4 LT |
866 | /* |
867 | * Probe for usable interrupts using the force | |
868 | * register to generate bogus card status events. | |
869 | */ | |
870 | cb_writel(socket, CB_SOCKET_EVENT, -1); | |
871 | cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK); | |
872 | exca_writeb(socket, I365_CSCINT, 0); | |
873 | val = probe_irq_on() & isa_irq_mask; | |
874 | for (i = 1; i < 16; i++) { | |
875 | if (!((val >> i) & 1)) | |
876 | continue; | |
877 | exca_writeb(socket, I365_CSCINT, I365_CSC_STSCHG | (i << 4)); | |
878 | cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS); | |
879 | udelay(100); | |
880 | cb_writel(socket, CB_SOCKET_EVENT, -1); | |
881 | } | |
882 | cb_writel(socket, CB_SOCKET_MASK, 0); | |
883 | exca_writeb(socket, I365_CSCINT, 0); | |
884 | ||
885 | mask = probe_irq_mask(val) & 0xffff; | |
886 | ||
1da177e4 LT |
887 | return mask; |
888 | } | |
889 | ||
890 | ||
63e7ebd0 DR |
891 | /** |
892 | * yenta PCI irq probing. | |
893 | * currently only used in the TI/EnE initialization code | |
894 | */ | |
895 | #ifdef CONFIG_YENTA_TI | |
896 | ||
1da177e4 | 897 | /* interrupt handler, only used during probing */ |
7d12e780 | 898 | static irqreturn_t yenta_probe_handler(int irq, void *dev_id) |
1da177e4 LT |
899 | { |
900 | struct yenta_socket *socket = (struct yenta_socket *) dev_id; | |
901 | u8 csc; | |
902 | u32 cb_event; | |
903 | ||
904 | /* Clear interrupt status for the event */ | |
905 | cb_event = cb_readl(socket, CB_SOCKET_EVENT); | |
906 | cb_writel(socket, CB_SOCKET_EVENT, -1); | |
907 | csc = exca_readb(socket, I365_CSC); | |
908 | ||
909 | if (cb_event || csc) { | |
910 | socket->probe_status = 1; | |
911 | return IRQ_HANDLED; | |
912 | } | |
913 | ||
914 | return IRQ_NONE; | |
915 | } | |
916 | ||
917 | /* probes the PCI interrupt, use only on override functions */ | |
918 | static int yenta_probe_cb_irq(struct yenta_socket *socket) | |
919 | { | |
1da177e4 LT |
920 | if (!socket->cb_irq) |
921 | return -1; | |
922 | ||
923 | socket->probe_status = 0; | |
924 | ||
dace1453 | 925 | if (request_irq(socket->cb_irq, yenta_probe_handler, IRQF_SHARED, "yenta", socket)) { |
1da177e4 LT |
926 | printk(KERN_WARNING "Yenta: request_irq() in yenta_probe_cb_irq() failed!\n"); |
927 | return -1; | |
928 | } | |
929 | ||
930 | /* generate interrupt, wait */ | |
931 | exca_writeb(socket, I365_CSCINT, I365_CSC_STSCHG); | |
932 | cb_writel(socket, CB_SOCKET_EVENT, -1); | |
933 | cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK); | |
934 | cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS); | |
a413c090 | 935 | |
1da177e4 LT |
936 | msleep(100); |
937 | ||
938 | /* disable interrupts */ | |
939 | cb_writel(socket, CB_SOCKET_MASK, 0); | |
940 | exca_writeb(socket, I365_CSCINT, 0); | |
941 | cb_writel(socket, CB_SOCKET_EVENT, -1); | |
942 | exca_readb(socket, I365_CSC); | |
943 | ||
944 | free_irq(socket->cb_irq, socket); | |
945 | ||
946 | return (int) socket->probe_status; | |
947 | } | |
948 | ||
63e7ebd0 | 949 | #endif /* CONFIG_YENTA_TI */ |
1da177e4 LT |
950 | |
951 | ||
952 | /* | |
953 | * Set static data that doesn't need re-initializing.. | |
954 | */ | |
955 | static void yenta_get_socket_capabilities(struct yenta_socket *socket, u32 isa_irq_mask) | |
956 | { | |
1da177e4 | 957 | socket->socket.pci_irq = socket->cb_irq; |
fa912bcb DR |
958 | if (isa_probe) |
959 | socket->socket.irq_mask = yenta_probe_irq(socket, isa_irq_mask); | |
960 | else | |
961 | socket->socket.irq_mask = 0; | |
1da177e4 LT |
962 | |
963 | printk(KERN_INFO "Yenta: ISA IRQ mask 0x%04x, PCI irq %d\n", | |
964 | socket->socket.irq_mask, socket->cb_irq); | |
965 | } | |
966 | ||
967 | /* | |
968 | * Initialize the standard cardbus registers | |
969 | */ | |
970 | static void yenta_config_init(struct yenta_socket *socket) | |
971 | { | |
972 | u16 bridge; | |
973 | struct pci_dev *dev = socket->dev; | |
8e5d17eb | 974 | struct pci_bus_region region; |
1da177e4 | 975 | |
8e5d17eb | 976 | pcibios_resource_to_bus(socket->dev, ®ion, &dev->resource[0]); |
1da177e4 LT |
977 | |
978 | config_writel(socket, CB_LEGACY_MODE_BASE, 0); | |
8e5d17eb | 979 | config_writel(socket, PCI_BASE_ADDRESS_0, region.start); |
1da177e4 LT |
980 | config_writew(socket, PCI_COMMAND, |
981 | PCI_COMMAND_IO | | |
982 | PCI_COMMAND_MEMORY | | |
983 | PCI_COMMAND_MASTER | | |
984 | PCI_COMMAND_WAIT); | |
985 | ||
986 | /* MAGIC NUMBERS! Fixme */ | |
987 | config_writeb(socket, PCI_CACHE_LINE_SIZE, L1_CACHE_BYTES / 4); | |
988 | config_writeb(socket, PCI_LATENCY_TIMER, 168); | |
989 | config_writel(socket, PCI_PRIMARY_BUS, | |
990 | (176 << 24) | /* sec. latency timer */ | |
991 | (dev->subordinate->subordinate << 16) | /* subordinate bus */ | |
992 | (dev->subordinate->secondary << 8) | /* secondary bus */ | |
993 | dev->subordinate->primary); /* primary bus */ | |
994 | ||
995 | /* | |
996 | * Set up the bridging state: | |
997 | * - enable write posting. | |
998 | * - memory window 0 prefetchable, window 1 non-prefetchable | |
999 | * - PCI interrupts enabled if a PCI interrupt exists.. | |
1000 | */ | |
1001 | bridge = config_readw(socket, CB_BRIDGE_CONTROL); | |
a413c090 DR |
1002 | bridge &= ~(CB_BRIDGE_CRST | CB_BRIDGE_PREFETCH1 | CB_BRIDGE_ISAEN | CB_BRIDGE_VGAEN); |
1003 | bridge |= CB_BRIDGE_PREFETCH0 | CB_BRIDGE_POSTEN; | |
1da177e4 LT |
1004 | config_writew(socket, CB_BRIDGE_CONTROL, bridge); |
1005 | } | |
1006 | ||
b435261b | 1007 | /** |
66005216 | 1008 | * yenta_fixup_parent_bridge - Fix subordinate bus# of the parent bridge |
b435261b BK |
1009 | * @cardbus_bridge: The PCI bus which the CardBus bridge bridges to |
1010 | * | |
1011 | * Checks if devices on the bus which the CardBus bridge bridges to would be | |
1012 | * invisible during PCI scans because of a misconfigured subordinate number | |
1013 | * of the parent brige - some BIOSes seem to be too lazy to set it right. | |
1014 | * Does the fixup carefully by checking how far it can go without conflicts. | |
1015 | * See http://bugzilla.kernel.org/show_bug.cgi?id=2944 for more information. | |
1016 | */ | |
1017 | static void yenta_fixup_parent_bridge(struct pci_bus *cardbus_bridge) | |
1018 | { | |
1019 | struct list_head *tmp; | |
1020 | unsigned char upper_limit; | |
1021 | /* | |
1022 | * We only check and fix the parent bridge: All systems which need | |
1023 | * this fixup that have been reviewed are laptops and the only bridge | |
1024 | * which needed fixing was the parent bridge of the CardBus bridge: | |
1025 | */ | |
1026 | struct pci_bus *bridge_to_fix = cardbus_bridge->parent; | |
1027 | ||
1028 | /* Check bus numbers are already set up correctly: */ | |
1029 | if (bridge_to_fix->subordinate >= cardbus_bridge->subordinate) | |
1030 | return; /* The subordinate number is ok, nothing to do */ | |
1031 | ||
1032 | if (!bridge_to_fix->parent) | |
1033 | return; /* Root bridges are ok */ | |
1034 | ||
1035 | /* stay within the limits of the bus range of the parent: */ | |
1036 | upper_limit = bridge_to_fix->parent->subordinate; | |
1037 | ||
1038 | /* check the bus ranges of all silbling bridges to prevent overlap */ | |
1039 | list_for_each(tmp, &bridge_to_fix->parent->children) { | |
1040 | struct pci_bus * silbling = pci_bus_b(tmp); | |
1041 | /* | |
1042 | * If the silbling has a higher secondary bus number | |
1043 | * and it's secondary is equal or smaller than our | |
1044 | * current upper limit, set the new upper limit to | |
1045 | * the bus number below the silbling's range: | |
1046 | */ | |
1047 | if (silbling->secondary > bridge_to_fix->subordinate | |
1048 | && silbling->secondary <= upper_limit) | |
1049 | upper_limit = silbling->secondary - 1; | |
1050 | } | |
1051 | ||
1052 | /* Show that the wanted subordinate number is not possible: */ | |
1053 | if (cardbus_bridge->subordinate > upper_limit) | |
1054 | printk(KERN_WARNING "Yenta: Upper limit for fixing this " | |
1055 | "bridge's parent bridge: #%02x\n", upper_limit); | |
1056 | ||
1057 | /* If we have room to increase the bridge's subordinate number, */ | |
1058 | if (bridge_to_fix->subordinate < upper_limit) { | |
1059 | ||
1060 | /* use the highest number of the hidden bus, within limits */ | |
1061 | unsigned char subordinate_to_assign = | |
1062 | min(cardbus_bridge->subordinate, upper_limit); | |
1063 | ||
1064 | printk(KERN_INFO "Yenta: Raising subordinate bus# of parent " | |
1065 | "bus (#%02x) from #%02x to #%02x\n", | |
1066 | bridge_to_fix->number, | |
1067 | bridge_to_fix->subordinate, subordinate_to_assign); | |
1068 | ||
1069 | /* Save the new subordinate in the bus struct of the bridge */ | |
1070 | bridge_to_fix->subordinate = subordinate_to_assign; | |
1071 | ||
1072 | /* and update the PCI config space with the new subordinate */ | |
1073 | pci_write_config_byte(bridge_to_fix->self, | |
1074 | PCI_SUBORDINATE_BUS, bridge_to_fix->subordinate); | |
1075 | } | |
1076 | } | |
1077 | ||
1da177e4 LT |
1078 | /* |
1079 | * Initialize a cardbus controller. Make sure we have a usable | |
1080 | * interrupt, and that we can map the cardbus area. Fill in the | |
1081 | * socket information structure.. | |
1082 | */ | |
1083 | static int __devinit yenta_probe (struct pci_dev *dev, const struct pci_device_id *id) | |
1084 | { | |
1085 | struct yenta_socket *socket; | |
1086 | int ret; | |
c7fb0b35 IK |
1087 | |
1088 | /* | |
1089 | * If we failed to assign proper bus numbers for this cardbus | |
1090 | * controller during PCI probe, its subordinate pci_bus is NULL. | |
1091 | * Bail out if so. | |
1092 | */ | |
1093 | if (!dev->subordinate) { | |
5a23f347 LT |
1094 | printk(KERN_ERR "Yenta: no bus associated with %s! " |
1095 | "(try 'pci=assign-busses')\n", pci_name(dev)); | |
c7fb0b35 IK |
1096 | return -ENODEV; |
1097 | } | |
1098 | ||
8084b372 | 1099 | socket = kzalloc(sizeof(struct yenta_socket), GFP_KERNEL); |
1da177e4 LT |
1100 | if (!socket) |
1101 | return -ENOMEM; | |
1da177e4 LT |
1102 | |
1103 | /* prepare pcmcia_socket */ | |
1104 | socket->socket.ops = ¥ta_socket_operations; | |
1105 | socket->socket.resource_ops = &pccard_nonstatic_ops; | |
87373318 | 1106 | socket->socket.dev.parent = &dev->dev; |
1da177e4 LT |
1107 | socket->socket.driver_data = socket; |
1108 | socket->socket.owner = THIS_MODULE; | |
5bc6b68a RK |
1109 | socket->socket.features = SS_CAP_PAGE_REGS | SS_CAP_PCCARD; |
1110 | socket->socket.map_size = 0x1000; | |
1111 | socket->socket.cb_dev = dev; | |
1da177e4 LT |
1112 | |
1113 | /* prepare struct yenta_socket */ | |
1114 | socket->dev = dev; | |
1115 | pci_set_drvdata(dev, socket); | |
1116 | ||
1117 | /* | |
1118 | * Do some basic sanity checking.. | |
1119 | */ | |
1120 | if (pci_enable_device(dev)) { | |
1121 | ret = -EBUSY; | |
1122 | goto free; | |
1123 | } | |
1124 | ||
1125 | ret = pci_request_regions(dev, "yenta_socket"); | |
1126 | if (ret) | |
1127 | goto disable; | |
1128 | ||
1129 | if (!pci_resource_start(dev, 0)) { | |
1130 | printk(KERN_ERR "No cardbus resource!\n"); | |
1131 | ret = -ENODEV; | |
1132 | goto release; | |
1133 | } | |
1134 | ||
1135 | /* | |
1136 | * Ok, start setup.. Map the cardbus registers, | |
1137 | * and request the IRQ. | |
1138 | */ | |
1139 | socket->base = ioremap(pci_resource_start(dev, 0), 0x1000); | |
1140 | if (!socket->base) { | |
1141 | ret = -ENOMEM; | |
1142 | goto release; | |
1143 | } | |
1144 | ||
1145 | /* | |
1146 | * report the subsystem vendor and device for help debugging | |
1147 | * the irq stuff... | |
1148 | */ | |
1149 | printk(KERN_INFO "Yenta: CardBus bridge found at %s [%04x:%04x]\n", | |
1150 | pci_name(dev), dev->subsystem_vendor, dev->subsystem_device); | |
1151 | ||
1152 | yenta_config_init(socket); | |
1153 | ||
1154 | /* Disable all events */ | |
1155 | cb_writel(socket, CB_SOCKET_MASK, 0x0); | |
1156 | ||
1157 | /* Set up the bridge regions.. */ | |
1158 | yenta_allocate_resources(socket); | |
1159 | ||
1160 | socket->cb_irq = dev->irq; | |
1161 | ||
1162 | /* Do we have special options for the device? */ | |
1163 | if (id->driver_data != CARDBUS_TYPE_DEFAULT && | |
1164 | id->driver_data < ARRAY_SIZE(cardbus_type)) { | |
1165 | socket->type = &cardbus_type[id->driver_data]; | |
1166 | ||
1167 | ret = socket->type->override(socket); | |
1168 | if (ret < 0) | |
1169 | goto unmap; | |
1170 | } | |
1171 | ||
1172 | /* We must finish initialization here */ | |
1173 | ||
dace1453 | 1174 | if (!socket->cb_irq || request_irq(socket->cb_irq, yenta_interrupt, IRQF_SHARED, "yenta", socket)) { |
1da177e4 LT |
1175 | /* No IRQ or request_irq failed. Poll */ |
1176 | socket->cb_irq = 0; /* But zero is a valid IRQ number. */ | |
1177 | init_timer(&socket->poll_timer); | |
1178 | socket->poll_timer.function = yenta_interrupt_wrapper; | |
1179 | socket->poll_timer.data = (unsigned long)socket; | |
1180 | socket->poll_timer.expires = jiffies + HZ; | |
1181 | add_timer(&socket->poll_timer); | |
5bc6b68a RK |
1182 | printk(KERN_INFO "Yenta: no PCI IRQ, CardBus support disabled for this socket.\n" |
1183 | KERN_INFO "Yenta: check your BIOS CardBus, BIOS IRQ or ACPI settings.\n"); | |
1184 | } else { | |
1185 | socket->socket.features |= SS_CAP_CARDBUS; | |
1da177e4 LT |
1186 | } |
1187 | ||
1188 | /* Figure out what the dang thing can do for the PCMCIA layer... */ | |
fa912bcb | 1189 | yenta_interrogate(socket); |
1da177e4 LT |
1190 | yenta_get_socket_capabilities(socket, isa_interrupts); |
1191 | printk(KERN_INFO "Socket status: %08x\n", cb_readl(socket, CB_SOCKET_STATE)); | |
1192 | ||
b435261b BK |
1193 | yenta_fixup_parent_bridge(dev->subordinate); |
1194 | ||
1da177e4 LT |
1195 | /* Register it with the pcmcia layer.. */ |
1196 | ret = pcmcia_register_socket(&socket->socket); | |
030ee39c LT |
1197 | if (ret == 0) { |
1198 | /* Add the yenta register attributes */ | |
4deb7c1e JG |
1199 | ret = device_create_file(&dev->dev, &dev_attr_yenta_registers); |
1200 | if (ret == 0) | |
1201 | goto out; | |
1202 | ||
1203 | /* error path... */ | |
1204 | pcmcia_unregister_socket(&socket->socket); | |
030ee39c | 1205 | } |
1da177e4 LT |
1206 | |
1207 | unmap: | |
1208 | iounmap(socket->base); | |
1209 | release: | |
1210 | pci_release_regions(dev); | |
1211 | disable: | |
1212 | pci_disable_device(dev); | |
1213 | free: | |
1214 | kfree(socket); | |
1215 | out: | |
1216 | return ret; | |
1217 | } | |
1218 | ||
f237de58 | 1219 | #ifdef CONFIG_PM |
1da177e4 LT |
1220 | static int yenta_dev_suspend (struct pci_dev *dev, pm_message_t state) |
1221 | { | |
1222 | struct yenta_socket *socket = pci_get_drvdata(dev); | |
1223 | int ret; | |
1224 | ||
1225 | ret = pcmcia_socket_dev_suspend(&dev->dev, state); | |
1226 | ||
1227 | if (socket) { | |
1228 | if (socket->type && socket->type->save_state) | |
1229 | socket->type->save_state(socket); | |
1230 | ||
1231 | /* FIXME: pci_save_state needs to have a better interface */ | |
1232 | pci_save_state(dev); | |
1233 | pci_read_config_dword(dev, 16*4, &socket->saved_state[0]); | |
1234 | pci_read_config_dword(dev, 17*4, &socket->saved_state[1]); | |
d58da590 | 1235 | pci_disable_device(dev); |
1da177e4 LT |
1236 | |
1237 | /* | |
1238 | * Some laptops (IBM T22) do not like us putting the Cardbus | |
1239 | * bridge into D3. At a guess, some other laptop will | |
1240 | * probably require this, so leave it commented out for now. | |
1241 | */ | |
1242 | /* pci_set_power_state(dev, 3); */ | |
1243 | } | |
1244 | ||
1245 | return ret; | |
1246 | } | |
1247 | ||
1248 | ||
1249 | static int yenta_dev_resume (struct pci_dev *dev) | |
1250 | { | |
1251 | struct yenta_socket *socket = pci_get_drvdata(dev); | |
1252 | ||
1253 | if (socket) { | |
4deb7c1e JG |
1254 | int rc; |
1255 | ||
1da177e4 LT |
1256 | pci_set_power_state(dev, 0); |
1257 | /* FIXME: pci_restore_state needs to have a better interface */ | |
1258 | pci_restore_state(dev); | |
1259 | pci_write_config_dword(dev, 16*4, socket->saved_state[0]); | |
1260 | pci_write_config_dword(dev, 17*4, socket->saved_state[1]); | |
4deb7c1e JG |
1261 | |
1262 | rc = pci_enable_device(dev); | |
1263 | if (rc) | |
1264 | return rc; | |
1265 | ||
d58da590 | 1266 | pci_set_master(dev); |
1da177e4 LT |
1267 | |
1268 | if (socket->type && socket->type->restore_state) | |
1269 | socket->type->restore_state(socket); | |
1270 | } | |
1271 | ||
1272 | return pcmcia_socket_dev_resume(&dev->dev); | |
1273 | } | |
f237de58 | 1274 | #endif |
1da177e4 LT |
1275 | |
1276 | #define CB_ID(vend,dev,type) \ | |
1277 | { \ | |
1278 | .vendor = vend, \ | |
1279 | .device = dev, \ | |
1280 | .subvendor = PCI_ANY_ID, \ | |
1281 | .subdevice = PCI_ANY_ID, \ | |
1282 | .class = PCI_CLASS_BRIDGE_CARDBUS << 8, \ | |
1283 | .class_mask = ~0, \ | |
1284 | .driver_data = CARDBUS_TYPE_##type, \ | |
1285 | } | |
1286 | ||
1287 | static struct pci_device_id yenta_table [] = { | |
1288 | CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1031, TI), | |
1289 | ||
1290 | /* | |
1291 | * TBD: Check if these TI variants can use more | |
1292 | * advanced overrides instead. (I can't get the | |
1293 | * data sheets for these devices. --rmk) | |
1294 | */ | |
63e7ebd0 | 1295 | #ifdef CONFIG_YENTA_TI |
1da177e4 LT |
1296 | CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1210, TI), |
1297 | ||
1298 | CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1130, TI113X), | |
1299 | CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1131, TI113X), | |
1300 | ||
1301 | CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1211, TI12XX), | |
1302 | CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1220, TI12XX), | |
1303 | CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1221, TI12XX), | |
1304 | CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1225, TI12XX), | |
1305 | CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251A, TI12XX), | |
1306 | CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251B, TI12XX), | |
1307 | CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1420, TI12XX), | |
1308 | CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1450, TI12XX), | |
1309 | CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1451A, TI12XX), | |
1310 | CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1510, TI12XX), | |
1311 | CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1520, TI12XX), | |
1312 | CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1620, TI12XX), | |
1313 | CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4410, TI12XX), | |
1314 | CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4450, TI12XX), | |
1315 | CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4451, TI12XX), | |
1316 | CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4510, TI12XX), | |
1317 | CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4520, TI12XX), | |
1318 | ||
1319 | CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1250, TI1250), | |
1320 | CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1410, TI1250), | |
1321 | ||
6c1a10db DR |
1322 | CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX21_XX11, TI12XX), |
1323 | CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X515, TI12XX), | |
59e35ba1 | 1324 | CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX12, TI12XX), |
6c1a10db DR |
1325 | CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X420, TI12XX), |
1326 | CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X620, TI12XX), | |
1327 | CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7410, TI12XX), | |
1328 | CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7510, TI12XX), | |
1329 | CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7610, TI12XX), | |
1330 | ||
f9cb8b71 DR |
1331 | CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_710, TI12XX), |
1332 | CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_712, TI12XX), | |
1333 | CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_720, TI12XX), | |
1334 | CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_722, TI12XX), | |
8c3520d4 DR |
1335 | CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1211, ENE), |
1336 | CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1225, ENE), | |
1337 | CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1410, ENE), | |
1338 | CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1420, ENE), | |
63e7ebd0 | 1339 | #endif /* CONFIG_YENTA_TI */ |
1da177e4 | 1340 | |
63e7ebd0 | 1341 | #ifdef CONFIG_YENTA_RICOH |
1da177e4 LT |
1342 | CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C465, RICOH), |
1343 | CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C466, RICOH), | |
1344 | CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C475, RICOH), | |
1345 | CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, RICOH), | |
1346 | CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C478, RICOH), | |
63e7ebd0 | 1347 | #endif |
1da177e4 | 1348 | |
63e7ebd0 | 1349 | #ifdef CONFIG_YENTA_TOSHIBA |
ea2f1590 | 1350 | CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC95, TOPIC95), |
1da177e4 LT |
1351 | CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC97, TOPIC97), |
1352 | CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC100, TOPIC97), | |
63e7ebd0 | 1353 | #endif |
1da177e4 | 1354 | |
63e7ebd0 | 1355 | #ifdef CONFIG_YENTA_O2 |
1da177e4 | 1356 | CB_ID(PCI_VENDOR_ID_O2, PCI_ANY_ID, O2MICRO), |
63e7ebd0 | 1357 | #endif |
1da177e4 LT |
1358 | |
1359 | /* match any cardbus bridge */ | |
1360 | CB_ID(PCI_ANY_ID, PCI_ANY_ID, DEFAULT), | |
1361 | { /* all zeroes */ } | |
1362 | }; | |
1363 | MODULE_DEVICE_TABLE(pci, yenta_table); | |
1364 | ||
1365 | ||
1366 | static struct pci_driver yenta_cardbus_driver = { | |
1367 | .name = "yenta_cardbus", | |
1368 | .id_table = yenta_table, | |
1369 | .probe = yenta_probe, | |
1370 | .remove = __devexit_p(yenta_close), | |
f237de58 | 1371 | #ifdef CONFIG_PM |
1da177e4 LT |
1372 | .suspend = yenta_dev_suspend, |
1373 | .resume = yenta_dev_resume, | |
f237de58 | 1374 | #endif |
1da177e4 LT |
1375 | }; |
1376 | ||
1377 | ||
1378 | static int __init yenta_socket_init(void) | |
1379 | { | |
1380 | return pci_register_driver (¥ta_cardbus_driver); | |
1381 | } | |
1382 | ||
1383 | ||
1384 | static void __exit yenta_socket_exit (void) | |
1385 | { | |
1386 | pci_unregister_driver (¥ta_cardbus_driver); | |
1387 | } | |
1388 | ||
1389 | ||
1390 | module_init(yenta_socket_init); | |
1391 | module_exit(yenta_socket_exit); | |
1392 | ||
1393 | MODULE_LICENSE("GPL"); |