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1da177e4 LT |
1 | /* |
2 | * arch/parisc/kernel/firmware.c - safe PDC access routines | |
3 | * | |
4 | * PDC == Processor Dependent Code | |
5 | * | |
6 | * See http://www.parisc-linux.org/documentation/index.html | |
7 | * for documentation describing the entry points and calling | |
8 | * conventions defined below. | |
9 | * | |
10 | * Copyright 1999 SuSE GmbH Nuernberg (Philipp Rumpf, prumpf@tux.org) | |
11 | * Copyright 1999 The Puffin Group, (Alex deVries, David Kennedy) | |
12 | * Copyright 2003 Grant Grundler <grundler parisc-linux org> | |
13 | * Copyright 2003,2004 Ryan Bradetich <rbrad@parisc-linux.org> | |
8ffaeaf4 | 14 | * Copyright 2004,2006 Thibaut VARENE <varenet@parisc-linux.org> |
1da177e4 LT |
15 | * |
16 | * This program is free software; you can redistribute it and/or modify | |
17 | * it under the terms of the GNU General Public License as published by | |
18 | * the Free Software Foundation; either version 2 of the License, or | |
19 | * (at your option) any later version. | |
20 | * | |
21 | */ | |
22 | ||
23 | /* I think it would be in everyone's best interest to follow this | |
24 | * guidelines when writing PDC wrappers: | |
25 | * | |
26 | * - the name of the pdc wrapper should match one of the macros | |
27 | * used for the first two arguments | |
28 | * - don't use caps for random parts of the name | |
29 | * - use the static PDC result buffers and "copyout" to structs | |
30 | * supplied by the caller to encapsulate alignment restrictions | |
31 | * - hold pdc_lock while in PDC or using static result buffers | |
32 | * - use __pa() to convert virtual (kernel) pointers to physical | |
33 | * ones. | |
34 | * - the name of the struct used for pdc return values should equal | |
35 | * one of the macros used for the first two arguments to the | |
36 | * corresponding PDC call | |
37 | * - keep the order of arguments | |
38 | * - don't be smart (setting trailing NUL bytes for strings, return | |
39 | * something useful even if the call failed) unless you are sure | |
40 | * it's not going to affect functionality or performance | |
41 | * | |
42 | * Example: | |
43 | * int pdc_cache_info(struct pdc_cache_info *cache_info ) | |
44 | * { | |
45 | * int retval; | |
46 | * | |
47 | * spin_lock_irq(&pdc_lock); | |
48 | * retval = mem_pdc_call(PDC_CACHE,PDC_CACHE_INFO,__pa(cache_info),0); | |
49 | * convert_to_wide(pdc_result); | |
50 | * memcpy(cache_info, pdc_result, sizeof(*cache_info)); | |
51 | * spin_unlock_irq(&pdc_lock); | |
52 | * | |
53 | * return retval; | |
54 | * } | |
55 | * prumpf 991016 | |
56 | */ | |
57 | ||
58 | #include <stdarg.h> | |
59 | ||
60 | #include <linux/delay.h> | |
61 | #include <linux/init.h> | |
62 | #include <linux/kernel.h> | |
63 | #include <linux/module.h> | |
64 | #include <linux/string.h> | |
65 | #include <linux/spinlock.h> | |
66 | ||
67 | #include <asm/page.h> | |
68 | #include <asm/pdc.h> | |
69 | #include <asm/pdcpat.h> | |
70 | #include <asm/system.h> | |
71 | #include <asm/processor.h> /* for boot_cpu_data */ | |
72 | ||
73 | static DEFINE_SPINLOCK(pdc_lock); | |
6c86cb82 KM |
74 | extern unsigned long pdc_result[NUM_PDC_RESULT]; |
75 | extern unsigned long pdc_result2[NUM_PDC_RESULT]; | |
1da177e4 | 76 | |
a8f44e38 | 77 | #ifdef CONFIG_64BIT |
1da177e4 LT |
78 | #define WIDE_FIRMWARE 0x1 |
79 | #define NARROW_FIRMWARE 0x2 | |
80 | ||
81 | /* Firmware needs to be initially set to narrow to determine the | |
82 | * actual firmware width. */ | |
8039de10 | 83 | int parisc_narrow_firmware __read_mostly = 1; |
1da177e4 LT |
84 | #endif |
85 | ||
675ec7a5 GG |
86 | /* On most currently-supported platforms, IODC I/O calls are 32-bit calls |
87 | * and MEM_PDC calls are always the same width as the OS. | |
88 | * Some PAT boxes may have 64-bit IODC I/O. | |
1da177e4 | 89 | * |
675ec7a5 GG |
90 | * Ryan Bradetich added the now obsolete CONFIG_PDC_NARROW to allow |
91 | * 64-bit kernels to run on systems with 32-bit MEM_PDC calls. | |
92 | * This allowed wide kernels to run on Cxxx boxes. | |
93 | * We now detect 32-bit-only PDC and dynamically switch to 32-bit mode | |
94 | * when running a 64-bit kernel on such boxes (e.g. C200 or C360). | |
1da177e4 LT |
95 | */ |
96 | ||
a8f44e38 | 97 | #ifdef CONFIG_64BIT |
1da177e4 LT |
98 | long real64_call(unsigned long function, ...); |
99 | #endif | |
100 | long real32_call(unsigned long function, ...); | |
101 | ||
a8f44e38 | 102 | #ifdef CONFIG_64BIT |
1da177e4 LT |
103 | # define MEM_PDC (unsigned long)(PAGE0->mem_pdc_hi) << 32 | PAGE0->mem_pdc |
104 | # define mem_pdc_call(args...) unlikely(parisc_narrow_firmware) ? real32_call(MEM_PDC, args) : real64_call(MEM_PDC, args) | |
105 | #else | |
106 | # define MEM_PDC (unsigned long)PAGE0->mem_pdc | |
107 | # define mem_pdc_call(args...) real32_call(MEM_PDC, args) | |
108 | #endif | |
109 | ||
110 | ||
111 | /** | |
112 | * f_extend - Convert PDC addresses to kernel addresses. | |
113 | * @address: Address returned from PDC. | |
114 | * | |
115 | * This function is used to convert PDC addresses into kernel addresses | |
116 | * when the PDC address size and kernel address size are different. | |
117 | */ | |
118 | static unsigned long f_extend(unsigned long address) | |
119 | { | |
a8f44e38 | 120 | #ifdef CONFIG_64BIT |
1da177e4 LT |
121 | if(unlikely(parisc_narrow_firmware)) { |
122 | if((address & 0xff000000) == 0xf0000000) | |
123 | return 0xf0f0f0f000000000UL | (u32)address; | |
124 | ||
125 | if((address & 0xf0000000) == 0xf0000000) | |
126 | return 0xffffffff00000000UL | (u32)address; | |
127 | } | |
128 | #endif | |
129 | return address; | |
130 | } | |
131 | ||
132 | /** | |
133 | * convert_to_wide - Convert the return buffer addresses into kernel addresses. | |
134 | * @address: The return buffer from PDC. | |
135 | * | |
136 | * This function is used to convert the return buffer addresses retrieved from PDC | |
137 | * into kernel addresses when the PDC address size and kernel address size are | |
138 | * different. | |
139 | */ | |
140 | static void convert_to_wide(unsigned long *addr) | |
141 | { | |
a8f44e38 | 142 | #ifdef CONFIG_64BIT |
1da177e4 LT |
143 | int i; |
144 | unsigned int *p = (unsigned int *)addr; | |
145 | ||
146 | if(unlikely(parisc_narrow_firmware)) { | |
147 | for(i = 31; i >= 0; --i) | |
148 | addr[i] = p[i]; | |
149 | } | |
150 | #endif | |
151 | } | |
152 | ||
24b574d0 | 153 | #ifdef CONFIG_64BIT |
24dc029f | 154 | void __cpuinit set_firmware_width_unlocked(void) |
24b574d0 KM |
155 | { |
156 | int ret; | |
157 | ||
158 | ret = mem_pdc_call(PDC_MODEL, PDC_MODEL_CAPABILITIES, | |
159 | __pa(pdc_result), 0); | |
160 | convert_to_wide(pdc_result); | |
161 | if (pdc_result[0] != NARROW_FIRMWARE) | |
162 | parisc_narrow_firmware = 0; | |
163 | } | |
164 | ||
1da177e4 LT |
165 | /** |
166 | * set_firmware_width - Determine if the firmware is wide or narrow. | |
167 | * | |
24b574d0 KM |
168 | * This function must be called before any pdc_* function that uses the |
169 | * convert_to_wide function. | |
1da177e4 | 170 | */ |
24dc029f | 171 | void __cpuinit set_firmware_width(void) |
1da177e4 | 172 | { |
09690b18 | 173 | unsigned long flags; |
24b574d0 KM |
174 | spin_lock_irqsave(&pdc_lock, flags); |
175 | set_firmware_width_unlocked(); | |
176 | spin_unlock_irqrestore(&pdc_lock, flags); | |
177 | } | |
178 | #else | |
24dc029f | 179 | void __cpuinit set_firmware_width_unlocked(void) { |
24b574d0 KM |
180 | return; |
181 | } | |
1da177e4 | 182 | |
24dc029f | 183 | void __cpuinit set_firmware_width(void) { |
24b574d0 | 184 | return; |
1da177e4 | 185 | } |
24b574d0 | 186 | #endif /*CONFIG_64BIT*/ |
1da177e4 LT |
187 | |
188 | /** | |
189 | * pdc_emergency_unlock - Unlock the linux pdc lock | |
190 | * | |
191 | * This call unlocks the linux pdc lock in case we need some PDC functions | |
192 | * (like pdc_add_valid) during kernel stack dump. | |
193 | */ | |
194 | void pdc_emergency_unlock(void) | |
195 | { | |
196 | /* Spinlock DEBUG code freaks out if we unconditionally unlock */ | |
197 | if (spin_is_locked(&pdc_lock)) | |
198 | spin_unlock(&pdc_lock); | |
199 | } | |
200 | ||
201 | ||
202 | /** | |
203 | * pdc_add_valid - Verify address can be accessed without causing a HPMC. | |
204 | * @address: Address to be verified. | |
205 | * | |
206 | * This PDC call attempts to read from the specified address and verifies | |
207 | * if the address is valid. | |
208 | * | |
209 | * The return value is PDC_OK (0) in case accessing this address is valid. | |
210 | */ | |
211 | int pdc_add_valid(unsigned long address) | |
212 | { | |
213 | int retval; | |
09690b18 | 214 | unsigned long flags; |
1da177e4 | 215 | |
09690b18 | 216 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 | 217 | retval = mem_pdc_call(PDC_ADD_VALID, PDC_ADD_VALID_VERIFY, address); |
09690b18 | 218 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
219 | |
220 | return retval; | |
221 | } | |
222 | EXPORT_SYMBOL(pdc_add_valid); | |
223 | ||
224 | /** | |
225 | * pdc_chassis_info - Return chassis information. | |
226 | * @result: The return buffer. | |
227 | * @chassis_info: The memory buffer address. | |
228 | * @len: The size of the memory buffer address. | |
229 | * | |
230 | * An HVERSION dependent call for returning the chassis information. | |
231 | */ | |
232 | int __init pdc_chassis_info(struct pdc_chassis_info *chassis_info, void *led_info, unsigned long len) | |
233 | { | |
234 | int retval; | |
09690b18 | 235 | unsigned long flags; |
1da177e4 | 236 | |
09690b18 | 237 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
238 | memcpy(&pdc_result, chassis_info, sizeof(*chassis_info)); |
239 | memcpy(&pdc_result2, led_info, len); | |
240 | retval = mem_pdc_call(PDC_CHASSIS, PDC_RETURN_CHASSIS_INFO, | |
241 | __pa(pdc_result), __pa(pdc_result2), len); | |
242 | memcpy(chassis_info, pdc_result, sizeof(*chassis_info)); | |
243 | memcpy(led_info, pdc_result2, len); | |
09690b18 | 244 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
245 | |
246 | return retval; | |
247 | } | |
248 | ||
249 | /** | |
250 | * pdc_pat_chassis_send_log - Sends a PDC PAT CHASSIS log message. | |
251 | * @retval: -1 on error, 0 on success. Other value are PDC errors | |
252 | * | |
253 | * Must be correctly formatted or expect system crash | |
254 | */ | |
a8f44e38 | 255 | #ifdef CONFIG_64BIT |
1da177e4 LT |
256 | int pdc_pat_chassis_send_log(unsigned long state, unsigned long data) |
257 | { | |
258 | int retval = 0; | |
09690b18 | 259 | unsigned long flags; |
1da177e4 LT |
260 | |
261 | if (!is_pdc_pat()) | |
262 | return -1; | |
263 | ||
09690b18 | 264 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 | 265 | retval = mem_pdc_call(PDC_PAT_CHASSIS_LOG, PDC_PAT_CHASSIS_WRITE_LOG, __pa(&state), __pa(&data)); |
09690b18 | 266 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
267 | |
268 | return retval; | |
269 | } | |
270 | #endif | |
271 | ||
272 | /** | |
8ffaeaf4 | 273 | * pdc_chassis_disp - Updates chassis code |
1da177e4 | 274 | * @retval: -1 on error, 0 on success |
1da177e4 LT |
275 | */ |
276 | int pdc_chassis_disp(unsigned long disp) | |
277 | { | |
278 | int retval = 0; | |
09690b18 | 279 | unsigned long flags; |
1da177e4 | 280 | |
09690b18 | 281 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 | 282 | retval = mem_pdc_call(PDC_CHASSIS, PDC_CHASSIS_DISP, disp); |
09690b18 | 283 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
284 | |
285 | return retval; | |
286 | } | |
287 | ||
8ffaeaf4 TV |
288 | /** |
289 | * pdc_chassis_warn - Fetches chassis warnings | |
290 | * @retval: -1 on error, 0 on success | |
291 | */ | |
292 | int pdc_chassis_warn(unsigned long *warn) | |
293 | { | |
294 | int retval = 0; | |
09690b18 | 295 | unsigned long flags; |
8ffaeaf4 | 296 | |
09690b18 | 297 | spin_lock_irqsave(&pdc_lock, flags); |
8ffaeaf4 TV |
298 | retval = mem_pdc_call(PDC_CHASSIS, PDC_CHASSIS_WARN, __pa(pdc_result)); |
299 | *warn = pdc_result[0]; | |
09690b18 | 300 | spin_unlock_irqrestore(&pdc_lock, flags); |
8ffaeaf4 TV |
301 | |
302 | return retval; | |
303 | } | |
304 | ||
24dc029f | 305 | int __cpuinit pdc_coproc_cfg_unlocked(struct pdc_coproc_cfg *pdc_coproc_info) |
24b574d0 KM |
306 | { |
307 | int ret; | |
308 | ||
309 | ret = mem_pdc_call(PDC_COPROC, PDC_COPROC_CFG, __pa(pdc_result)); | |
310 | convert_to_wide(pdc_result); | |
311 | pdc_coproc_info->ccr_functional = pdc_result[0]; | |
312 | pdc_coproc_info->ccr_present = pdc_result[1]; | |
313 | pdc_coproc_info->revision = pdc_result[17]; | |
314 | pdc_coproc_info->model = pdc_result[18]; | |
315 | ||
316 | return ret; | |
317 | } | |
318 | ||
1da177e4 LT |
319 | /** |
320 | * pdc_coproc_cfg - To identify coprocessors attached to the processor. | |
321 | * @pdc_coproc_info: Return buffer address. | |
322 | * | |
323 | * This PDC call returns the presence and status of all the coprocessors | |
324 | * attached to the processor. | |
325 | */ | |
24dc029f | 326 | int __cpuinit pdc_coproc_cfg(struct pdc_coproc_cfg *pdc_coproc_info) |
1da177e4 | 327 | { |
24b574d0 | 328 | int ret; |
09690b18 | 329 | unsigned long flags; |
1da177e4 | 330 | |
24b574d0 KM |
331 | spin_lock_irqsave(&pdc_lock, flags); |
332 | ret = pdc_coproc_cfg_unlocked(pdc_coproc_info); | |
333 | spin_unlock_irqrestore(&pdc_lock, flags); | |
1da177e4 | 334 | |
24b574d0 | 335 | return ret; |
1da177e4 LT |
336 | } |
337 | ||
338 | /** | |
339 | * pdc_iodc_read - Read data from the modules IODC. | |
340 | * @actcnt: The actual number of bytes. | |
341 | * @hpa: The HPA of the module for the iodc read. | |
342 | * @index: The iodc entry point. | |
343 | * @iodc_data: A buffer memory for the iodc options. | |
344 | * @iodc_data_size: Size of the memory buffer. | |
345 | * | |
346 | * This PDC call reads from the IODC of the module specified by the hpa | |
347 | * argument. | |
348 | */ | |
349 | int pdc_iodc_read(unsigned long *actcnt, unsigned long hpa, unsigned int index, | |
350 | void *iodc_data, unsigned int iodc_data_size) | |
351 | { | |
352 | int retval; | |
09690b18 | 353 | unsigned long flags; |
1da177e4 | 354 | |
09690b18 | 355 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
356 | retval = mem_pdc_call(PDC_IODC, PDC_IODC_READ, __pa(pdc_result), hpa, |
357 | index, __pa(pdc_result2), iodc_data_size); | |
358 | convert_to_wide(pdc_result); | |
359 | *actcnt = pdc_result[0]; | |
360 | memcpy(iodc_data, pdc_result2, iodc_data_size); | |
09690b18 | 361 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
362 | |
363 | return retval; | |
364 | } | |
365 | EXPORT_SYMBOL(pdc_iodc_read); | |
366 | ||
367 | /** | |
368 | * pdc_system_map_find_mods - Locate unarchitected modules. | |
369 | * @pdc_mod_info: Return buffer address. | |
370 | * @mod_path: pointer to dev path structure. | |
371 | * @mod_index: fixed address module index. | |
372 | * | |
373 | * To locate and identify modules which reside at fixed I/O addresses, which | |
374 | * do not self-identify via architected bus walks. | |
375 | */ | |
376 | int pdc_system_map_find_mods(struct pdc_system_map_mod_info *pdc_mod_info, | |
377 | struct pdc_module_path *mod_path, long mod_index) | |
378 | { | |
379 | int retval; | |
09690b18 | 380 | unsigned long flags; |
1da177e4 | 381 | |
09690b18 | 382 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
383 | retval = mem_pdc_call(PDC_SYSTEM_MAP, PDC_FIND_MODULE, __pa(pdc_result), |
384 | __pa(pdc_result2), mod_index); | |
385 | convert_to_wide(pdc_result); | |
386 | memcpy(pdc_mod_info, pdc_result, sizeof(*pdc_mod_info)); | |
387 | memcpy(mod_path, pdc_result2, sizeof(*mod_path)); | |
09690b18 | 388 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
389 | |
390 | pdc_mod_info->mod_addr = f_extend(pdc_mod_info->mod_addr); | |
391 | return retval; | |
392 | } | |
393 | ||
394 | /** | |
395 | * pdc_system_map_find_addrs - Retrieve additional address ranges. | |
396 | * @pdc_addr_info: Return buffer address. | |
397 | * @mod_index: Fixed address module index. | |
398 | * @addr_index: Address range index. | |
399 | * | |
400 | * Retrieve additional information about subsequent address ranges for modules | |
401 | * with multiple address ranges. | |
402 | */ | |
403 | int pdc_system_map_find_addrs(struct pdc_system_map_addr_info *pdc_addr_info, | |
404 | long mod_index, long addr_index) | |
405 | { | |
406 | int retval; | |
09690b18 | 407 | unsigned long flags; |
1da177e4 | 408 | |
09690b18 | 409 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
410 | retval = mem_pdc_call(PDC_SYSTEM_MAP, PDC_FIND_ADDRESS, __pa(pdc_result), |
411 | mod_index, addr_index); | |
412 | convert_to_wide(pdc_result); | |
413 | memcpy(pdc_addr_info, pdc_result, sizeof(*pdc_addr_info)); | |
09690b18 | 414 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
415 | |
416 | pdc_addr_info->mod_addr = f_extend(pdc_addr_info->mod_addr); | |
417 | return retval; | |
418 | } | |
419 | ||
420 | /** | |
421 | * pdc_model_info - Return model information about the processor. | |
422 | * @model: The return buffer. | |
423 | * | |
424 | * Returns the version numbers, identifiers, and capabilities from the processor module. | |
425 | */ | |
426 | int pdc_model_info(struct pdc_model *model) | |
427 | { | |
428 | int retval; | |
09690b18 | 429 | unsigned long flags; |
1da177e4 | 430 | |
09690b18 | 431 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
432 | retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_INFO, __pa(pdc_result), 0); |
433 | convert_to_wide(pdc_result); | |
434 | memcpy(model, pdc_result, sizeof(*model)); | |
09690b18 | 435 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
436 | |
437 | return retval; | |
438 | } | |
439 | ||
440 | /** | |
441 | * pdc_model_sysmodel - Get the system model name. | |
442 | * @name: A char array of at least 81 characters. | |
443 | * | |
ec1fdc24 KM |
444 | * Get system model name from PDC ROM (e.g. 9000/715 or 9000/778/B160L). |
445 | * Using OS_ID_HPUX will return the equivalent of the 'modelname' command | |
446 | * on HP/UX. | |
1da177e4 LT |
447 | */ |
448 | int pdc_model_sysmodel(char *name) | |
449 | { | |
450 | int retval; | |
09690b18 | 451 | unsigned long flags; |
1da177e4 | 452 | |
09690b18 | 453 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
454 | retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_SYSMODEL, __pa(pdc_result), |
455 | OS_ID_HPUX, __pa(name)); | |
456 | convert_to_wide(pdc_result); | |
457 | ||
458 | if (retval == PDC_OK) { | |
459 | name[pdc_result[0]] = '\0'; /* add trailing '\0' */ | |
460 | } else { | |
461 | name[0] = 0; | |
462 | } | |
09690b18 | 463 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
464 | |
465 | return retval; | |
466 | } | |
467 | ||
468 | /** | |
469 | * pdc_model_versions - Identify the version number of each processor. | |
470 | * @cpu_id: The return buffer. | |
471 | * @id: The id of the processor to check. | |
472 | * | |
473 | * Returns the version number for each processor component. | |
474 | * | |
475 | * This comment was here before, but I do not know what it means :( -RB | |
476 | * id: 0 = cpu revision, 1 = boot-rom-version | |
477 | */ | |
478 | int pdc_model_versions(unsigned long *versions, int id) | |
479 | { | |
480 | int retval; | |
09690b18 | 481 | unsigned long flags; |
1da177e4 | 482 | |
09690b18 | 483 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
484 | retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_VERSIONS, __pa(pdc_result), id); |
485 | convert_to_wide(pdc_result); | |
486 | *versions = pdc_result[0]; | |
09690b18 | 487 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
488 | |
489 | return retval; | |
490 | } | |
491 | ||
492 | /** | |
493 | * pdc_model_cpuid - Returns the CPU_ID. | |
494 | * @cpu_id: The return buffer. | |
495 | * | |
496 | * Returns the CPU_ID value which uniquely identifies the cpu portion of | |
497 | * the processor module. | |
498 | */ | |
499 | int pdc_model_cpuid(unsigned long *cpu_id) | |
500 | { | |
501 | int retval; | |
09690b18 | 502 | unsigned long flags; |
1da177e4 | 503 | |
09690b18 | 504 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
505 | pdc_result[0] = 0; /* preset zero (call may not be implemented!) */ |
506 | retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_CPU_ID, __pa(pdc_result), 0); | |
507 | convert_to_wide(pdc_result); | |
508 | *cpu_id = pdc_result[0]; | |
09690b18 | 509 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
510 | |
511 | return retval; | |
512 | } | |
513 | ||
514 | /** | |
515 | * pdc_model_capabilities - Returns the platform capabilities. | |
516 | * @capabilities: The return buffer. | |
517 | * | |
518 | * Returns information about platform support for 32- and/or 64-bit | |
519 | * OSes, IO-PDIR coherency, and virtual aliasing. | |
520 | */ | |
521 | int pdc_model_capabilities(unsigned long *capabilities) | |
522 | { | |
523 | int retval; | |
09690b18 | 524 | unsigned long flags; |
1da177e4 | 525 | |
09690b18 | 526 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
527 | pdc_result[0] = 0; /* preset zero (call may not be implemented!) */ |
528 | retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_CAPABILITIES, __pa(pdc_result), 0); | |
529 | convert_to_wide(pdc_result); | |
445c088f CW |
530 | if (retval == PDC_OK) { |
531 | *capabilities = pdc_result[0]; | |
532 | } else { | |
533 | *capabilities = PDC_MODEL_OS32; | |
534 | } | |
09690b18 | 535 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
536 | |
537 | return retval; | |
538 | } | |
539 | ||
540 | /** | |
541 | * pdc_cache_info - Return cache and TLB information. | |
542 | * @cache_info: The return buffer. | |
543 | * | |
544 | * Returns information about the processor's cache and TLB. | |
545 | */ | |
546 | int pdc_cache_info(struct pdc_cache_info *cache_info) | |
547 | { | |
548 | int retval; | |
09690b18 | 549 | unsigned long flags; |
1da177e4 | 550 | |
09690b18 | 551 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
552 | retval = mem_pdc_call(PDC_CACHE, PDC_CACHE_INFO, __pa(pdc_result), 0); |
553 | convert_to_wide(pdc_result); | |
554 | memcpy(cache_info, pdc_result, sizeof(*cache_info)); | |
09690b18 | 555 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
556 | |
557 | return retval; | |
558 | } | |
559 | ||
a9d2d386 KM |
560 | /** |
561 | * pdc_spaceid_bits - Return whether Space ID hashing is turned on. | |
562 | * @space_bits: Should be 0, if not, bad mojo! | |
563 | * | |
564 | * Returns information about Space ID hashing. | |
565 | */ | |
566 | int pdc_spaceid_bits(unsigned long *space_bits) | |
567 | { | |
568 | int retval; | |
09690b18 | 569 | unsigned long flags; |
a9d2d386 | 570 | |
09690b18 | 571 | spin_lock_irqsave(&pdc_lock, flags); |
a9d2d386 KM |
572 | pdc_result[0] = 0; |
573 | retval = mem_pdc_call(PDC_CACHE, PDC_CACHE_RET_SPID, __pa(pdc_result), 0); | |
574 | convert_to_wide(pdc_result); | |
575 | *space_bits = pdc_result[0]; | |
09690b18 | 576 | spin_unlock_irqrestore(&pdc_lock, flags); |
a9d2d386 KM |
577 | |
578 | return retval; | |
579 | } | |
580 | ||
1da177e4 LT |
581 | #ifndef CONFIG_PA20 |
582 | /** | |
583 | * pdc_btlb_info - Return block TLB information. | |
584 | * @btlb: The return buffer. | |
585 | * | |
586 | * Returns information about the hardware Block TLB. | |
587 | */ | |
588 | int pdc_btlb_info(struct pdc_btlb_info *btlb) | |
589 | { | |
590 | int retval; | |
09690b18 | 591 | unsigned long flags; |
1da177e4 | 592 | |
09690b18 | 593 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
594 | retval = mem_pdc_call(PDC_BLOCK_TLB, PDC_BTLB_INFO, __pa(pdc_result), 0); |
595 | memcpy(btlb, pdc_result, sizeof(*btlb)); | |
09690b18 | 596 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
597 | |
598 | if(retval < 0) { | |
599 | btlb->max_size = 0; | |
600 | } | |
601 | return retval; | |
602 | } | |
603 | ||
604 | /** | |
605 | * pdc_mem_map_hpa - Find fixed module information. | |
606 | * @address: The return buffer | |
607 | * @mod_path: pointer to dev path structure. | |
608 | * | |
609 | * This call was developed for S700 workstations to allow the kernel to find | |
610 | * the I/O devices (Core I/O). In the future (Kittyhawk and beyond) this | |
611 | * call will be replaced (on workstations) by the architected PDC_SYSTEM_MAP | |
612 | * call. | |
613 | * | |
614 | * This call is supported by all existing S700 workstations (up to Gecko). | |
615 | */ | |
616 | int pdc_mem_map_hpa(struct pdc_memory_map *address, | |
617 | struct pdc_module_path *mod_path) | |
618 | { | |
619 | int retval; | |
09690b18 | 620 | unsigned long flags; |
1da177e4 | 621 | |
09690b18 | 622 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
623 | memcpy(pdc_result2, mod_path, sizeof(*mod_path)); |
624 | retval = mem_pdc_call(PDC_MEM_MAP, PDC_MEM_MAP_HPA, __pa(pdc_result), | |
625 | __pa(pdc_result2)); | |
626 | memcpy(address, pdc_result, sizeof(*address)); | |
09690b18 | 627 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
628 | |
629 | return retval; | |
630 | } | |
631 | #endif /* !CONFIG_PA20 */ | |
632 | ||
633 | /** | |
634 | * pdc_lan_station_id - Get the LAN address. | |
635 | * @lan_addr: The return buffer. | |
636 | * @hpa: The network device HPA. | |
637 | * | |
638 | * Get the LAN station address when it is not directly available from the LAN hardware. | |
639 | */ | |
640 | int pdc_lan_station_id(char *lan_addr, unsigned long hpa) | |
641 | { | |
642 | int retval; | |
09690b18 | 643 | unsigned long flags; |
1da177e4 | 644 | |
09690b18 | 645 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
646 | retval = mem_pdc_call(PDC_LAN_STATION_ID, PDC_LAN_STATION_ID_READ, |
647 | __pa(pdc_result), hpa); | |
648 | if (retval < 0) { | |
649 | /* FIXME: else read MAC from NVRAM */ | |
650 | memset(lan_addr, 0, PDC_LAN_STATION_ID_SIZE); | |
651 | } else { | |
652 | memcpy(lan_addr, pdc_result, PDC_LAN_STATION_ID_SIZE); | |
653 | } | |
09690b18 | 654 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
655 | |
656 | return retval; | |
657 | } | |
658 | EXPORT_SYMBOL(pdc_lan_station_id); | |
659 | ||
660 | /** | |
661 | * pdc_stable_read - Read data from Stable Storage. | |
662 | * @staddr: Stable Storage address to access. | |
663 | * @memaddr: The memory address where Stable Storage data shall be copied. | |
7022672e | 664 | * @count: number of bytes to transfer. count is multiple of 4. |
1da177e4 LT |
665 | * |
666 | * This PDC call reads from the Stable Storage address supplied in staddr | |
667 | * and copies count bytes to the memory address memaddr. | |
668 | * The call will fail if staddr+count > PDC_STABLE size. | |
669 | */ | |
670 | int pdc_stable_read(unsigned long staddr, void *memaddr, unsigned long count) | |
671 | { | |
672 | int retval; | |
09690b18 | 673 | unsigned long flags; |
1da177e4 | 674 | |
09690b18 | 675 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
676 | retval = mem_pdc_call(PDC_STABLE, PDC_STABLE_READ, staddr, |
677 | __pa(pdc_result), count); | |
678 | convert_to_wide(pdc_result); | |
679 | memcpy(memaddr, pdc_result, count); | |
09690b18 | 680 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
681 | |
682 | return retval; | |
683 | } | |
684 | EXPORT_SYMBOL(pdc_stable_read); | |
685 | ||
686 | /** | |
687 | * pdc_stable_write - Write data to Stable Storage. | |
688 | * @staddr: Stable Storage address to access. | |
689 | * @memaddr: The memory address where Stable Storage data shall be read from. | |
7022672e | 690 | * @count: number of bytes to transfer. count is multiple of 4. |
1da177e4 LT |
691 | * |
692 | * This PDC call reads count bytes from the supplied memaddr address, | |
693 | * and copies count bytes to the Stable Storage address staddr. | |
694 | * The call will fail if staddr+count > PDC_STABLE size. | |
695 | */ | |
696 | int pdc_stable_write(unsigned long staddr, void *memaddr, unsigned long count) | |
697 | { | |
698 | int retval; | |
09690b18 | 699 | unsigned long flags; |
1da177e4 | 700 | |
09690b18 | 701 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
702 | memcpy(pdc_result, memaddr, count); |
703 | convert_to_wide(pdc_result); | |
704 | retval = mem_pdc_call(PDC_STABLE, PDC_STABLE_WRITE, staddr, | |
705 | __pa(pdc_result), count); | |
09690b18 | 706 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
707 | |
708 | return retval; | |
709 | } | |
710 | EXPORT_SYMBOL(pdc_stable_write); | |
711 | ||
712 | /** | |
713 | * pdc_stable_get_size - Get Stable Storage size in bytes. | |
714 | * @size: pointer where the size will be stored. | |
715 | * | |
716 | * This PDC call returns the number of bytes in the processor's Stable | |
717 | * Storage, which is the number of contiguous bytes implemented in Stable | |
718 | * Storage starting from staddr=0. size in an unsigned 64-bit integer | |
719 | * which is a multiple of four. | |
720 | */ | |
721 | int pdc_stable_get_size(unsigned long *size) | |
722 | { | |
723 | int retval; | |
09690b18 | 724 | unsigned long flags; |
1da177e4 | 725 | |
09690b18 | 726 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
727 | retval = mem_pdc_call(PDC_STABLE, PDC_STABLE_RETURN_SIZE, __pa(pdc_result)); |
728 | *size = pdc_result[0]; | |
09690b18 | 729 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
730 | |
731 | return retval; | |
732 | } | |
733 | EXPORT_SYMBOL(pdc_stable_get_size); | |
734 | ||
735 | /** | |
736 | * pdc_stable_verify_contents - Checks that Stable Storage contents are valid. | |
737 | * | |
738 | * This PDC call is meant to be used to check the integrity of the current | |
739 | * contents of Stable Storage. | |
740 | */ | |
741 | int pdc_stable_verify_contents(void) | |
742 | { | |
743 | int retval; | |
09690b18 | 744 | unsigned long flags; |
1da177e4 | 745 | |
09690b18 | 746 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 | 747 | retval = mem_pdc_call(PDC_STABLE, PDC_STABLE_VERIFY_CONTENTS); |
09690b18 | 748 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
749 | |
750 | return retval; | |
751 | } | |
752 | EXPORT_SYMBOL(pdc_stable_verify_contents); | |
753 | ||
754 | /** | |
755 | * pdc_stable_initialize - Sets Stable Storage contents to zero and initialize | |
756 | * the validity indicator. | |
757 | * | |
758 | * This PDC call will erase all contents of Stable Storage. Use with care! | |
759 | */ | |
760 | int pdc_stable_initialize(void) | |
761 | { | |
762 | int retval; | |
09690b18 | 763 | unsigned long flags; |
1da177e4 | 764 | |
09690b18 | 765 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 | 766 | retval = mem_pdc_call(PDC_STABLE, PDC_STABLE_INITIALIZE); |
09690b18 | 767 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
768 | |
769 | return retval; | |
770 | } | |
771 | EXPORT_SYMBOL(pdc_stable_initialize); | |
772 | ||
773 | /** | |
774 | * pdc_get_initiator - Get the SCSI Interface Card params (SCSI ID, SDTR, SE or LVD) | |
775 | * @hwpath: fully bc.mod style path to the device. | |
776 | * @initiator: the array to return the result into | |
777 | * | |
778 | * Get the SCSI operational parameters from PDC. | |
779 | * Needed since HPUX never used BIOS or symbios card NVRAM. | |
780 | * Most ncr/sym cards won't have an entry and just use whatever | |
781 | * capabilities of the card are (eg Ultra, LVD). But there are | |
782 | * several cases where it's useful: | |
783 | * o set SCSI id for Multi-initiator clusters, | |
784 | * o cable too long (ie SE scsi 10Mhz won't support 6m length), | |
785 | * o bus width exported is less than what the interface chip supports. | |
786 | */ | |
787 | int pdc_get_initiator(struct hardware_path *hwpath, struct pdc_initiator *initiator) | |
788 | { | |
789 | int retval; | |
09690b18 | 790 | unsigned long flags; |
1da177e4 | 791 | |
09690b18 | 792 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
793 | |
794 | /* BCJ-XXXX series boxes. E.G. "9000/785/C3000" */ | |
795 | #define IS_SPROCKETS() (strlen(boot_cpu_data.pdc.sys_model_name) == 14 && \ | |
796 | strncmp(boot_cpu_data.pdc.sys_model_name, "9000/785", 8) == 0) | |
797 | ||
798 | retval = mem_pdc_call(PDC_INITIATOR, PDC_GET_INITIATOR, | |
799 | __pa(pdc_result), __pa(hwpath)); | |
800 | if (retval < PDC_OK) | |
801 | goto out; | |
802 | ||
803 | if (pdc_result[0] < 16) { | |
804 | initiator->host_id = pdc_result[0]; | |
805 | } else { | |
806 | initiator->host_id = -1; | |
807 | } | |
808 | ||
809 | /* | |
810 | * Sprockets and Piranha return 20 or 40 (MT/s). Prelude returns | |
811 | * 1, 2, 5 or 10 for 5, 10, 20 or 40 MT/s, respectively | |
812 | */ | |
813 | switch (pdc_result[1]) { | |
814 | case 1: initiator->factor = 50; break; | |
815 | case 2: initiator->factor = 25; break; | |
816 | case 5: initiator->factor = 12; break; | |
817 | case 25: initiator->factor = 10; break; | |
818 | case 20: initiator->factor = 12; break; | |
819 | case 40: initiator->factor = 10; break; | |
820 | default: initiator->factor = -1; break; | |
821 | } | |
822 | ||
823 | if (IS_SPROCKETS()) { | |
824 | initiator->width = pdc_result[4]; | |
825 | initiator->mode = pdc_result[5]; | |
826 | } else { | |
827 | initiator->width = -1; | |
828 | initiator->mode = -1; | |
829 | } | |
830 | ||
831 | out: | |
09690b18 KM |
832 | spin_unlock_irqrestore(&pdc_lock, flags); |
833 | ||
1da177e4 LT |
834 | return (retval >= PDC_OK); |
835 | } | |
836 | EXPORT_SYMBOL(pdc_get_initiator); | |
837 | ||
838 | ||
839 | /** | |
840 | * pdc_pci_irt_size - Get the number of entries in the interrupt routing table. | |
841 | * @num_entries: The return value. | |
842 | * @hpa: The HPA for the device. | |
843 | * | |
844 | * This PDC function returns the number of entries in the specified cell's | |
845 | * interrupt table. | |
846 | * Similar to PDC_PAT stuff - but added for Forte/Allegro boxes | |
847 | */ | |
848 | int pdc_pci_irt_size(unsigned long *num_entries, unsigned long hpa) | |
849 | { | |
850 | int retval; | |
09690b18 | 851 | unsigned long flags; |
1da177e4 | 852 | |
09690b18 | 853 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
854 | retval = mem_pdc_call(PDC_PCI_INDEX, PDC_PCI_GET_INT_TBL_SIZE, |
855 | __pa(pdc_result), hpa); | |
856 | convert_to_wide(pdc_result); | |
857 | *num_entries = pdc_result[0]; | |
09690b18 | 858 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
859 | |
860 | return retval; | |
861 | } | |
862 | ||
863 | /** | |
864 | * pdc_pci_irt - Get the PCI interrupt routing table. | |
865 | * @num_entries: The number of entries in the table. | |
866 | * @hpa: The Hard Physical Address of the device. | |
867 | * @tbl: | |
868 | * | |
869 | * Get the PCI interrupt routing table for the device at the given HPA. | |
870 | * Similar to PDC_PAT stuff - but added for Forte/Allegro boxes | |
871 | */ | |
872 | int pdc_pci_irt(unsigned long num_entries, unsigned long hpa, void *tbl) | |
873 | { | |
874 | int retval; | |
09690b18 | 875 | unsigned long flags; |
1da177e4 LT |
876 | |
877 | BUG_ON((unsigned long)tbl & 0x7); | |
878 | ||
09690b18 | 879 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
880 | pdc_result[0] = num_entries; |
881 | retval = mem_pdc_call(PDC_PCI_INDEX, PDC_PCI_GET_INT_TBL, | |
882 | __pa(pdc_result), hpa, __pa(tbl)); | |
09690b18 | 883 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
884 | |
885 | return retval; | |
886 | } | |
887 | ||
888 | ||
889 | #if 0 /* UNTEST CODE - left here in case someone needs it */ | |
890 | ||
891 | /** | |
892 | * pdc_pci_config_read - read PCI config space. | |
893 | * @hpa token from PDC to indicate which PCI device | |
894 | * @pci_addr configuration space address to read from | |
895 | * | |
896 | * Read PCI Configuration space *before* linux PCI subsystem is running. | |
897 | */ | |
898 | unsigned int pdc_pci_config_read(void *hpa, unsigned long cfg_addr) | |
899 | { | |
900 | int retval; | |
09690b18 KM |
901 | unsigned long flags; |
902 | ||
903 | spin_lock_irqsave(&pdc_lock, flags); | |
1da177e4 LT |
904 | pdc_result[0] = 0; |
905 | pdc_result[1] = 0; | |
906 | retval = mem_pdc_call(PDC_PCI_INDEX, PDC_PCI_READ_CONFIG, | |
907 | __pa(pdc_result), hpa, cfg_addr&~3UL, 4UL); | |
09690b18 KM |
908 | spin_unlock_irqrestore(&pdc_lock, flags); |
909 | ||
1da177e4 LT |
910 | return retval ? ~0 : (unsigned int) pdc_result[0]; |
911 | } | |
912 | ||
913 | ||
914 | /** | |
915 | * pdc_pci_config_write - read PCI config space. | |
916 | * @hpa token from PDC to indicate which PCI device | |
917 | * @pci_addr configuration space address to write | |
918 | * @val value we want in the 32-bit register | |
919 | * | |
920 | * Write PCI Configuration space *before* linux PCI subsystem is running. | |
921 | */ | |
922 | void pdc_pci_config_write(void *hpa, unsigned long cfg_addr, unsigned int val) | |
923 | { | |
924 | int retval; | |
09690b18 KM |
925 | unsigned long flags; |
926 | ||
927 | spin_lock_irqsave(&pdc_lock, flags); | |
1da177e4 LT |
928 | pdc_result[0] = 0; |
929 | retval = mem_pdc_call(PDC_PCI_INDEX, PDC_PCI_WRITE_CONFIG, | |
930 | __pa(pdc_result), hpa, | |
931 | cfg_addr&~3UL, 4UL, (unsigned long) val); | |
09690b18 KM |
932 | spin_unlock_irqrestore(&pdc_lock, flags); |
933 | ||
1da177e4 LT |
934 | return retval; |
935 | } | |
936 | #endif /* UNTESTED CODE */ | |
937 | ||
938 | /** | |
939 | * pdc_tod_read - Read the Time-Of-Day clock. | |
940 | * @tod: The return buffer: | |
941 | * | |
942 | * Read the Time-Of-Day clock | |
943 | */ | |
944 | int pdc_tod_read(struct pdc_tod *tod) | |
945 | { | |
946 | int retval; | |
09690b18 | 947 | unsigned long flags; |
1da177e4 | 948 | |
09690b18 | 949 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
950 | retval = mem_pdc_call(PDC_TOD, PDC_TOD_READ, __pa(pdc_result), 0); |
951 | convert_to_wide(pdc_result); | |
952 | memcpy(tod, pdc_result, sizeof(*tod)); | |
09690b18 | 953 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
954 | |
955 | return retval; | |
956 | } | |
957 | EXPORT_SYMBOL(pdc_tod_read); | |
958 | ||
959 | /** | |
960 | * pdc_tod_set - Set the Time-Of-Day clock. | |
961 | * @sec: The number of seconds since epoch. | |
962 | * @usec: The number of micro seconds. | |
963 | * | |
964 | * Set the Time-Of-Day clock. | |
965 | */ | |
966 | int pdc_tod_set(unsigned long sec, unsigned long usec) | |
967 | { | |
968 | int retval; | |
09690b18 | 969 | unsigned long flags; |
1da177e4 | 970 | |
09690b18 | 971 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 | 972 | retval = mem_pdc_call(PDC_TOD, PDC_TOD_WRITE, sec, usec); |
09690b18 | 973 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
974 | |
975 | return retval; | |
976 | } | |
977 | EXPORT_SYMBOL(pdc_tod_set); | |
978 | ||
a8f44e38 | 979 | #ifdef CONFIG_64BIT |
1da177e4 LT |
980 | int pdc_mem_mem_table(struct pdc_memory_table_raddr *r_addr, |
981 | struct pdc_memory_table *tbl, unsigned long entries) | |
982 | { | |
983 | int retval; | |
09690b18 | 984 | unsigned long flags; |
1da177e4 | 985 | |
09690b18 | 986 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
987 | retval = mem_pdc_call(PDC_MEM, PDC_MEM_TABLE, __pa(pdc_result), __pa(pdc_result2), entries); |
988 | convert_to_wide(pdc_result); | |
989 | memcpy(r_addr, pdc_result, sizeof(*r_addr)); | |
990 | memcpy(tbl, pdc_result2, entries * sizeof(*tbl)); | |
09690b18 | 991 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
992 | |
993 | return retval; | |
994 | } | |
a8f44e38 | 995 | #endif /* CONFIG_64BIT */ |
1da177e4 LT |
996 | |
997 | /* FIXME: Is this pdc used? I could not find type reference to ftc_bitmap | |
998 | * so I guessed at unsigned long. Someone who knows what this does, can fix | |
999 | * it later. :) | |
1000 | */ | |
1001 | int pdc_do_firm_test_reset(unsigned long ftc_bitmap) | |
1002 | { | |
1003 | int retval; | |
09690b18 | 1004 | unsigned long flags; |
1da177e4 | 1005 | |
09690b18 | 1006 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1007 | retval = mem_pdc_call(PDC_BROADCAST_RESET, PDC_DO_FIRM_TEST_RESET, |
1008 | PDC_FIRM_TEST_MAGIC, ftc_bitmap); | |
09690b18 | 1009 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1010 | |
1011 | return retval; | |
1012 | } | |
1013 | ||
1014 | /* | |
1015 | * pdc_do_reset - Reset the system. | |
1016 | * | |
1017 | * Reset the system. | |
1018 | */ | |
1019 | int pdc_do_reset(void) | |
1020 | { | |
1021 | int retval; | |
09690b18 | 1022 | unsigned long flags; |
1da177e4 | 1023 | |
09690b18 | 1024 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 | 1025 | retval = mem_pdc_call(PDC_BROADCAST_RESET, PDC_DO_RESET); |
09690b18 | 1026 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1027 | |
1028 | return retval; | |
1029 | } | |
1030 | ||
1031 | /* | |
1032 | * pdc_soft_power_info - Enable soft power switch. | |
1033 | * @power_reg: address of soft power register | |
1034 | * | |
1035 | * Return the absolute address of the soft power switch register | |
1036 | */ | |
1037 | int __init pdc_soft_power_info(unsigned long *power_reg) | |
1038 | { | |
1039 | int retval; | |
09690b18 | 1040 | unsigned long flags; |
1da177e4 LT |
1041 | |
1042 | *power_reg = (unsigned long) (-1); | |
1043 | ||
09690b18 | 1044 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1045 | retval = mem_pdc_call(PDC_SOFT_POWER, PDC_SOFT_POWER_INFO, __pa(pdc_result), 0); |
1046 | if (retval == PDC_OK) { | |
1047 | convert_to_wide(pdc_result); | |
1048 | *power_reg = f_extend(pdc_result[0]); | |
1049 | } | |
09690b18 | 1050 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1051 | |
1052 | return retval; | |
1053 | } | |
1054 | ||
1055 | /* | |
1056 | * pdc_soft_power_button - Control the soft power button behaviour | |
1057 | * @sw_control: 0 for hardware control, 1 for software control | |
1058 | * | |
1059 | * | |
1060 | * This PDC function places the soft power button under software or | |
1061 | * hardware control. | |
1062 | * Under software control the OS may control to when to allow to shut | |
1063 | * down the system. Under hardware control pressing the power button | |
1064 | * powers off the system immediately. | |
1065 | */ | |
1066 | int pdc_soft_power_button(int sw_control) | |
1067 | { | |
1068 | int retval; | |
09690b18 KM |
1069 | unsigned long flags; |
1070 | ||
1071 | spin_lock_irqsave(&pdc_lock, flags); | |
1da177e4 | 1072 | retval = mem_pdc_call(PDC_SOFT_POWER, PDC_SOFT_POWER_ENABLE, __pa(pdc_result), sw_control); |
09690b18 KM |
1073 | spin_unlock_irqrestore(&pdc_lock, flags); |
1074 | ||
1da177e4 LT |
1075 | return retval; |
1076 | } | |
1077 | ||
1078 | /* | |
1079 | * pdc_io_reset - Hack to avoid overlapping range registers of Bridges devices. | |
1080 | * Primarily a problem on T600 (which parisc-linux doesn't support) but | |
1081 | * who knows what other platform firmware might do with this OS "hook". | |
1082 | */ | |
1083 | void pdc_io_reset(void) | |
1084 | { | |
09690b18 KM |
1085 | unsigned long flags; |
1086 | ||
1087 | spin_lock_irqsave(&pdc_lock, flags); | |
1da177e4 | 1088 | mem_pdc_call(PDC_IO, PDC_IO_RESET, 0); |
09690b18 | 1089 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1090 | } |
1091 | ||
1092 | /* | |
1093 | * pdc_io_reset_devices - Hack to Stop USB controller | |
1094 | * | |
1095 | * If PDC used the usb controller, the usb controller | |
1096 | * is still running and will crash the machines during iommu | |
1097 | * setup, because of still running DMA. This PDC call | |
1098 | * stops the USB controller. | |
1099 | * Normally called after calling pdc_io_reset(). | |
1100 | */ | |
1101 | void pdc_io_reset_devices(void) | |
1102 | { | |
09690b18 KM |
1103 | unsigned long flags; |
1104 | ||
1105 | spin_lock_irqsave(&pdc_lock, flags); | |
1da177e4 | 1106 | mem_pdc_call(PDC_IO, PDC_IO_RESET_DEVICES, 0); |
09690b18 | 1107 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1108 | } |
1109 | ||
ef1afd4d KM |
1110 | /* locked by pdc_console_lock */ |
1111 | static int __attribute__((aligned(8))) iodc_retbuf[32]; | |
1112 | static char __attribute__((aligned(64))) iodc_dbuf[4096]; | |
1da177e4 LT |
1113 | |
1114 | /** | |
721fdf34 KM |
1115 | * pdc_iodc_print - Console print using IODC. |
1116 | * @str: the string to output. | |
1117 | * @count: length of str | |
1da177e4 LT |
1118 | * |
1119 | * Note that only these special chars are architected for console IODC io: | |
1120 | * BEL, BS, CR, and LF. Others are passed through. | |
1121 | * Since the HP console requires CR+LF to perform a 'newline', we translate | |
1122 | * "\n" to "\r\n". | |
1123 | */ | |
ef1afd4d | 1124 | int pdc_iodc_print(const unsigned char *str, unsigned count) |
1da177e4 | 1125 | { |
721fdf34 | 1126 | unsigned int i; |
c53421b1 | 1127 | unsigned long flags; |
1da177e4 | 1128 | |
ef1afd4d | 1129 | for (i = 0; i < count && i < 79;) { |
721fdf34 KM |
1130 | switch(str[i]) { |
1131 | case '\n': | |
1132 | iodc_dbuf[i+0] = '\r'; | |
1133 | iodc_dbuf[i+1] = '\n'; | |
1134 | i += 2; | |
ef1afd4d | 1135 | goto print; |
721fdf34 | 1136 | case '\b': /* BS */ |
d9b68e5e | 1137 | i--; /* overwrite last */ |
721fdf34 KM |
1138 | default: |
1139 | iodc_dbuf[i] = str[i]; | |
d9b68e5e | 1140 | i++; |
721fdf34 KM |
1141 | break; |
1142 | } | |
1143 | } | |
1da177e4 | 1144 | |
ef1afd4d KM |
1145 | /* if we're at the end of line, and not already inserting a newline, |
1146 | * insert one anyway. iodc console doesn't claim to support >79 char | |
1147 | * lines. don't account for this in the return value. | |
1148 | */ | |
1149 | if (i == 79 && iodc_dbuf[i-1] != '\n') { | |
1150 | iodc_dbuf[i+0] = '\r'; | |
1151 | iodc_dbuf[i+1] = '\n'; | |
1152 | } | |
1153 | ||
1154 | print: | |
1da177e4 LT |
1155 | spin_lock_irqsave(&pdc_lock, flags); |
1156 | real32_call(PAGE0->mem_cons.iodc_io, | |
1157 | (unsigned long)PAGE0->mem_cons.hpa, ENTRY_IO_COUT, | |
1158 | PAGE0->mem_cons.spa, __pa(PAGE0->mem_cons.dp.layers), | |
721fdf34 | 1159 | __pa(iodc_retbuf), 0, __pa(iodc_dbuf), i, 0); |
1da177e4 | 1160 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 | 1161 | |
721fdf34 | 1162 | return i; |
1da177e4 LT |
1163 | } |
1164 | ||
1165 | /** | |
1166 | * pdc_iodc_getc - Read a character (non-blocking) from the PDC console. | |
1167 | * | |
1168 | * Read a character (non-blocking) from the PDC console, returns -1 if | |
1169 | * key is not present. | |
1170 | */ | |
1171 | int pdc_iodc_getc(void) | |
1172 | { | |
1da177e4 LT |
1173 | int ch; |
1174 | int status; | |
ef1afd4d | 1175 | unsigned long flags; |
1da177e4 LT |
1176 | |
1177 | /* Bail if no console input device. */ | |
1178 | if (!PAGE0->mem_kbd.iodc_io) | |
1179 | return 0; | |
1180 | ||
1181 | /* wait for a keyboard (rs232)-input */ | |
1182 | spin_lock_irqsave(&pdc_lock, flags); | |
1183 | real32_call(PAGE0->mem_kbd.iodc_io, | |
1184 | (unsigned long)PAGE0->mem_kbd.hpa, ENTRY_IO_CIN, | |
1185 | PAGE0->mem_kbd.spa, __pa(PAGE0->mem_kbd.dp.layers), | |
1186 | __pa(iodc_retbuf), 0, __pa(iodc_dbuf), 1, 0); | |
1187 | ||
1188 | ch = *iodc_dbuf; | |
1189 | status = *iodc_retbuf; | |
1190 | spin_unlock_irqrestore(&pdc_lock, flags); | |
1191 | ||
1192 | if (status == 0) | |
1193 | return -1; | |
1194 | ||
1195 | return ch; | |
1196 | } | |
1197 | ||
1198 | int pdc_sti_call(unsigned long func, unsigned long flags, | |
1199 | unsigned long inptr, unsigned long outputr, | |
1200 | unsigned long glob_cfg) | |
1201 | { | |
1202 | int retval; | |
09690b18 | 1203 | unsigned long irqflags; |
1da177e4 | 1204 | |
09690b18 | 1205 | spin_lock_irqsave(&pdc_lock, irqflags); |
1da177e4 | 1206 | retval = real32_call(func, flags, inptr, outputr, glob_cfg); |
09690b18 | 1207 | spin_unlock_irqrestore(&pdc_lock, irqflags); |
1da177e4 LT |
1208 | |
1209 | return retval; | |
1210 | } | |
1211 | EXPORT_SYMBOL(pdc_sti_call); | |
1212 | ||
a8f44e38 | 1213 | #ifdef CONFIG_64BIT |
1da177e4 LT |
1214 | /** |
1215 | * pdc_pat_cell_get_number - Returns the cell number. | |
1216 | * @cell_info: The return buffer. | |
1217 | * | |
1218 | * This PDC call returns the cell number of the cell from which the call | |
1219 | * is made. | |
1220 | */ | |
1221 | int pdc_pat_cell_get_number(struct pdc_pat_cell_num *cell_info) | |
1222 | { | |
1223 | int retval; | |
09690b18 | 1224 | unsigned long flags; |
1da177e4 | 1225 | |
09690b18 | 1226 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1227 | retval = mem_pdc_call(PDC_PAT_CELL, PDC_PAT_CELL_GET_NUMBER, __pa(pdc_result)); |
1228 | memcpy(cell_info, pdc_result, sizeof(*cell_info)); | |
09690b18 | 1229 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1230 | |
1231 | return retval; | |
1232 | } | |
1233 | ||
1234 | /** | |
1235 | * pdc_pat_cell_module - Retrieve the cell's module information. | |
1236 | * @actcnt: The number of bytes written to mem_addr. | |
1237 | * @ploc: The physical location. | |
1238 | * @mod: The module index. | |
1239 | * @view_type: The view of the address type. | |
1240 | * @mem_addr: The return buffer. | |
1241 | * | |
1242 | * This PDC call returns information about each module attached to the cell | |
1243 | * at the specified location. | |
1244 | */ | |
1245 | int pdc_pat_cell_module(unsigned long *actcnt, unsigned long ploc, unsigned long mod, | |
1246 | unsigned long view_type, void *mem_addr) | |
1247 | { | |
1248 | int retval; | |
09690b18 | 1249 | unsigned long flags; |
1da177e4 LT |
1250 | static struct pdc_pat_cell_mod_maddr_block result __attribute__ ((aligned (8))); |
1251 | ||
09690b18 | 1252 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1253 | retval = mem_pdc_call(PDC_PAT_CELL, PDC_PAT_CELL_MODULE, __pa(pdc_result), |
1254 | ploc, mod, view_type, __pa(&result)); | |
1255 | if(!retval) { | |
1256 | *actcnt = pdc_result[0]; | |
1257 | memcpy(mem_addr, &result, *actcnt); | |
1258 | } | |
09690b18 | 1259 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1260 | |
1261 | return retval; | |
1262 | } | |
1263 | ||
1264 | /** | |
1265 | * pdc_pat_cpu_get_number - Retrieve the cpu number. | |
1266 | * @cpu_info: The return buffer. | |
1267 | * @hpa: The Hard Physical Address of the CPU. | |
1268 | * | |
1269 | * Retrieve the cpu number for the cpu at the specified HPA. | |
1270 | */ | |
1271 | int pdc_pat_cpu_get_number(struct pdc_pat_cpu_num *cpu_info, void *hpa) | |
1272 | { | |
1273 | int retval; | |
09690b18 | 1274 | unsigned long flags; |
1da177e4 | 1275 | |
09690b18 | 1276 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1277 | retval = mem_pdc_call(PDC_PAT_CPU, PDC_PAT_CPU_GET_NUMBER, |
1278 | __pa(&pdc_result), hpa); | |
1279 | memcpy(cpu_info, pdc_result, sizeof(*cpu_info)); | |
09690b18 | 1280 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1281 | |
1282 | return retval; | |
1283 | } | |
1284 | ||
1285 | /** | |
1286 | * pdc_pat_get_irt_size - Retrieve the number of entries in the cell's interrupt table. | |
1287 | * @num_entries: The return value. | |
1288 | * @cell_num: The target cell. | |
1289 | * | |
1290 | * This PDC function returns the number of entries in the specified cell's | |
1291 | * interrupt table. | |
1292 | */ | |
1293 | int pdc_pat_get_irt_size(unsigned long *num_entries, unsigned long cell_num) | |
1294 | { | |
1295 | int retval; | |
09690b18 | 1296 | unsigned long flags; |
1da177e4 | 1297 | |
09690b18 | 1298 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1299 | retval = mem_pdc_call(PDC_PAT_IO, PDC_PAT_IO_GET_PCI_ROUTING_TABLE_SIZE, |
1300 | __pa(pdc_result), cell_num); | |
1301 | *num_entries = pdc_result[0]; | |
09690b18 | 1302 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1303 | |
1304 | return retval; | |
1305 | } | |
1306 | ||
1307 | /** | |
1308 | * pdc_pat_get_irt - Retrieve the cell's interrupt table. | |
1309 | * @r_addr: The return buffer. | |
1310 | * @cell_num: The target cell. | |
1311 | * | |
1312 | * This PDC function returns the actual interrupt table for the specified cell. | |
1313 | */ | |
1314 | int pdc_pat_get_irt(void *r_addr, unsigned long cell_num) | |
1315 | { | |
1316 | int retval; | |
09690b18 | 1317 | unsigned long flags; |
1da177e4 | 1318 | |
09690b18 | 1319 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1320 | retval = mem_pdc_call(PDC_PAT_IO, PDC_PAT_IO_GET_PCI_ROUTING_TABLE, |
1321 | __pa(r_addr), cell_num); | |
09690b18 | 1322 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1323 | |
1324 | return retval; | |
1325 | } | |
1326 | ||
1327 | /** | |
1328 | * pdc_pat_pd_get_addr_map - Retrieve information about memory address ranges. | |
1329 | * @actlen: The return buffer. | |
1330 | * @mem_addr: Pointer to the memory buffer. | |
1331 | * @count: The number of bytes to read from the buffer. | |
1332 | * @offset: The offset with respect to the beginning of the buffer. | |
1333 | * | |
1334 | */ | |
1335 | int pdc_pat_pd_get_addr_map(unsigned long *actual_len, void *mem_addr, | |
1336 | unsigned long count, unsigned long offset) | |
1337 | { | |
1338 | int retval; | |
09690b18 | 1339 | unsigned long flags; |
1da177e4 | 1340 | |
09690b18 | 1341 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1342 | retval = mem_pdc_call(PDC_PAT_PD, PDC_PAT_PD_GET_ADDR_MAP, __pa(pdc_result), |
1343 | __pa(pdc_result2), count, offset); | |
1344 | *actual_len = pdc_result[0]; | |
1345 | memcpy(mem_addr, pdc_result2, *actual_len); | |
09690b18 | 1346 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1347 | |
1348 | return retval; | |
1349 | } | |
1350 | ||
1351 | /** | |
1352 | * pdc_pat_io_pci_cfg_read - Read PCI configuration space. | |
1353 | * @pci_addr: PCI configuration space address for which the read request is being made. | |
1354 | * @pci_size: Size of read in bytes. Valid values are 1, 2, and 4. | |
1355 | * @mem_addr: Pointer to return memory buffer. | |
1356 | * | |
1357 | */ | |
1358 | int pdc_pat_io_pci_cfg_read(unsigned long pci_addr, int pci_size, u32 *mem_addr) | |
1359 | { | |
1360 | int retval; | |
09690b18 KM |
1361 | unsigned long flags; |
1362 | ||
1363 | spin_lock_irqsave(&pdc_lock, flags); | |
1da177e4 LT |
1364 | retval = mem_pdc_call(PDC_PAT_IO, PDC_PAT_IO_PCI_CONFIG_READ, |
1365 | __pa(pdc_result), pci_addr, pci_size); | |
1366 | switch(pci_size) { | |
1367 | case 1: *(u8 *) mem_addr = (u8) pdc_result[0]; | |
1368 | case 2: *(u16 *)mem_addr = (u16) pdc_result[0]; | |
1369 | case 4: *(u32 *)mem_addr = (u32) pdc_result[0]; | |
1370 | } | |
09690b18 | 1371 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1372 | |
1373 | return retval; | |
1374 | } | |
1375 | ||
1376 | /** | |
1377 | * pdc_pat_io_pci_cfg_write - Retrieve information about memory address ranges. | |
1378 | * @pci_addr: PCI configuration space address for which the write request is being made. | |
1379 | * @pci_size: Size of write in bytes. Valid values are 1, 2, and 4. | |
1380 | * @value: Pointer to 1, 2, or 4 byte value in low order end of argument to be | |
1381 | * written to PCI Config space. | |
1382 | * | |
1383 | */ | |
1384 | int pdc_pat_io_pci_cfg_write(unsigned long pci_addr, int pci_size, u32 val) | |
1385 | { | |
1386 | int retval; | |
09690b18 | 1387 | unsigned long flags; |
1da177e4 | 1388 | |
09690b18 | 1389 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1390 | retval = mem_pdc_call(PDC_PAT_IO, PDC_PAT_IO_PCI_CONFIG_WRITE, |
1391 | pci_addr, pci_size, val); | |
09690b18 | 1392 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1393 | |
1394 | return retval; | |
1395 | } | |
a8f44e38 | 1396 | #endif /* CONFIG_64BIT */ |
1da177e4 LT |
1397 | |
1398 | ||
1399 | /***************** 32-bit real-mode calls ***********/ | |
1400 | /* The struct below is used | |
1401 | * to overlay real_stack (real2.S), preparing a 32-bit call frame. | |
1402 | * real32_call_asm() then uses this stack in narrow real mode | |
1403 | */ | |
1404 | ||
1405 | struct narrow_stack { | |
1406 | /* use int, not long which is 64 bits */ | |
1407 | unsigned int arg13; | |
1408 | unsigned int arg12; | |
1409 | unsigned int arg11; | |
1410 | unsigned int arg10; | |
1411 | unsigned int arg9; | |
1412 | unsigned int arg8; | |
1413 | unsigned int arg7; | |
1414 | unsigned int arg6; | |
1415 | unsigned int arg5; | |
1416 | unsigned int arg4; | |
1417 | unsigned int arg3; | |
1418 | unsigned int arg2; | |
1419 | unsigned int arg1; | |
1420 | unsigned int arg0; | |
1421 | unsigned int frame_marker[8]; | |
1422 | unsigned int sp; | |
1423 | /* in reality, there's nearly 8k of stack after this */ | |
1424 | }; | |
1425 | ||
1426 | long real32_call(unsigned long fn, ...) | |
1427 | { | |
1428 | va_list args; | |
1429 | extern struct narrow_stack real_stack; | |
1430 | extern unsigned long real32_call_asm(unsigned int *, | |
1431 | unsigned int *, | |
1432 | unsigned int); | |
1433 | ||
1434 | va_start(args, fn); | |
1435 | real_stack.arg0 = va_arg(args, unsigned int); | |
1436 | real_stack.arg1 = va_arg(args, unsigned int); | |
1437 | real_stack.arg2 = va_arg(args, unsigned int); | |
1438 | real_stack.arg3 = va_arg(args, unsigned int); | |
1439 | real_stack.arg4 = va_arg(args, unsigned int); | |
1440 | real_stack.arg5 = va_arg(args, unsigned int); | |
1441 | real_stack.arg6 = va_arg(args, unsigned int); | |
1442 | real_stack.arg7 = va_arg(args, unsigned int); | |
1443 | real_stack.arg8 = va_arg(args, unsigned int); | |
1444 | real_stack.arg9 = va_arg(args, unsigned int); | |
1445 | real_stack.arg10 = va_arg(args, unsigned int); | |
1446 | real_stack.arg11 = va_arg(args, unsigned int); | |
1447 | real_stack.arg12 = va_arg(args, unsigned int); | |
1448 | real_stack.arg13 = va_arg(args, unsigned int); | |
1449 | va_end(args); | |
1450 | ||
1451 | return real32_call_asm(&real_stack.sp, &real_stack.arg0, fn); | |
1452 | } | |
1453 | ||
a8f44e38 | 1454 | #ifdef CONFIG_64BIT |
1da177e4 LT |
1455 | /***************** 64-bit real-mode calls ***********/ |
1456 | ||
1457 | struct wide_stack { | |
1458 | unsigned long arg0; | |
1459 | unsigned long arg1; | |
1460 | unsigned long arg2; | |
1461 | unsigned long arg3; | |
1462 | unsigned long arg4; | |
1463 | unsigned long arg5; | |
1464 | unsigned long arg6; | |
1465 | unsigned long arg7; | |
1466 | unsigned long arg8; | |
1467 | unsigned long arg9; | |
1468 | unsigned long arg10; | |
1469 | unsigned long arg11; | |
1470 | unsigned long arg12; | |
1471 | unsigned long arg13; | |
1472 | unsigned long frame_marker[2]; /* rp, previous sp */ | |
1473 | unsigned long sp; | |
1474 | /* in reality, there's nearly 8k of stack after this */ | |
1475 | }; | |
1476 | ||
1477 | long real64_call(unsigned long fn, ...) | |
1478 | { | |
1479 | va_list args; | |
1480 | extern struct wide_stack real64_stack; | |
1481 | extern unsigned long real64_call_asm(unsigned long *, | |
1482 | unsigned long *, | |
1483 | unsigned long); | |
1484 | ||
1485 | va_start(args, fn); | |
1486 | real64_stack.arg0 = va_arg(args, unsigned long); | |
1487 | real64_stack.arg1 = va_arg(args, unsigned long); | |
1488 | real64_stack.arg2 = va_arg(args, unsigned long); | |
1489 | real64_stack.arg3 = va_arg(args, unsigned long); | |
1490 | real64_stack.arg4 = va_arg(args, unsigned long); | |
1491 | real64_stack.arg5 = va_arg(args, unsigned long); | |
1492 | real64_stack.arg6 = va_arg(args, unsigned long); | |
1493 | real64_stack.arg7 = va_arg(args, unsigned long); | |
1494 | real64_stack.arg8 = va_arg(args, unsigned long); | |
1495 | real64_stack.arg9 = va_arg(args, unsigned long); | |
1496 | real64_stack.arg10 = va_arg(args, unsigned long); | |
1497 | real64_stack.arg11 = va_arg(args, unsigned long); | |
1498 | real64_stack.arg12 = va_arg(args, unsigned long); | |
1499 | real64_stack.arg13 = va_arg(args, unsigned long); | |
1500 | va_end(args); | |
1501 | ||
1502 | return real64_call_asm(&real64_stack.sp, &real64_stack.arg0, fn); | |
1503 | } | |
1504 | ||
a8f44e38 | 1505 | #endif /* CONFIG_64BIT */ |
1da177e4 | 1506 |