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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> | |
1da177e4 LT |
70 | #include <asm/processor.h> /* for boot_cpu_data */ |
71 | ||
f5213b2c HD |
72 | #if defined(BOOTLOADER) |
73 | # undef spin_lock_irqsave | |
74 | # define spin_lock_irqsave(a, b) { b = 1; } | |
75 | # undef spin_unlock_irqrestore | |
76 | # define spin_unlock_irqrestore(a, b) | |
77 | #else | |
1da177e4 | 78 | static DEFINE_SPINLOCK(pdc_lock); |
f5213b2c HD |
79 | #endif |
80 | ||
6c86cb82 KM |
81 | extern unsigned long pdc_result[NUM_PDC_RESULT]; |
82 | extern unsigned long pdc_result2[NUM_PDC_RESULT]; | |
1da177e4 | 83 | |
a8f44e38 | 84 | #ifdef CONFIG_64BIT |
1da177e4 LT |
85 | #define WIDE_FIRMWARE 0x1 |
86 | #define NARROW_FIRMWARE 0x2 | |
87 | ||
88 | /* Firmware needs to be initially set to narrow to determine the | |
89 | * actual firmware width. */ | |
1b69085d | 90 | int parisc_narrow_firmware __ro_after_init = 1; |
1da177e4 LT |
91 | #endif |
92 | ||
675ec7a5 GG |
93 | /* On most currently-supported platforms, IODC I/O calls are 32-bit calls |
94 | * and MEM_PDC calls are always the same width as the OS. | |
95 | * Some PAT boxes may have 64-bit IODC I/O. | |
1da177e4 | 96 | * |
675ec7a5 GG |
97 | * Ryan Bradetich added the now obsolete CONFIG_PDC_NARROW to allow |
98 | * 64-bit kernels to run on systems with 32-bit MEM_PDC calls. | |
99 | * This allowed wide kernels to run on Cxxx boxes. | |
100 | * We now detect 32-bit-only PDC and dynamically switch to 32-bit mode | |
101 | * when running a 64-bit kernel on such boxes (e.g. C200 or C360). | |
1da177e4 LT |
102 | */ |
103 | ||
a8f44e38 | 104 | #ifdef CONFIG_64BIT |
1da177e4 LT |
105 | long real64_call(unsigned long function, ...); |
106 | #endif | |
107 | long real32_call(unsigned long function, ...); | |
108 | ||
a8f44e38 | 109 | #ifdef CONFIG_64BIT |
1da177e4 LT |
110 | # define MEM_PDC (unsigned long)(PAGE0->mem_pdc_hi) << 32 | PAGE0->mem_pdc |
111 | # define mem_pdc_call(args...) unlikely(parisc_narrow_firmware) ? real32_call(MEM_PDC, args) : real64_call(MEM_PDC, args) | |
112 | #else | |
113 | # define MEM_PDC (unsigned long)PAGE0->mem_pdc | |
114 | # define mem_pdc_call(args...) real32_call(MEM_PDC, args) | |
115 | #endif | |
116 | ||
117 | ||
118 | /** | |
119 | * f_extend - Convert PDC addresses to kernel addresses. | |
120 | * @address: Address returned from PDC. | |
121 | * | |
122 | * This function is used to convert PDC addresses into kernel addresses | |
123 | * when the PDC address size and kernel address size are different. | |
124 | */ | |
125 | static unsigned long f_extend(unsigned long address) | |
126 | { | |
a8f44e38 | 127 | #ifdef CONFIG_64BIT |
1da177e4 LT |
128 | if(unlikely(parisc_narrow_firmware)) { |
129 | if((address & 0xff000000) == 0xf0000000) | |
130 | return 0xf0f0f0f000000000UL | (u32)address; | |
131 | ||
132 | if((address & 0xf0000000) == 0xf0000000) | |
133 | return 0xffffffff00000000UL | (u32)address; | |
134 | } | |
135 | #endif | |
136 | return address; | |
137 | } | |
138 | ||
139 | /** | |
140 | * convert_to_wide - Convert the return buffer addresses into kernel addresses. | |
141 | * @address: The return buffer from PDC. | |
142 | * | |
143 | * This function is used to convert the return buffer addresses retrieved from PDC | |
144 | * into kernel addresses when the PDC address size and kernel address size are | |
145 | * different. | |
146 | */ | |
147 | static void convert_to_wide(unsigned long *addr) | |
148 | { | |
a8f44e38 | 149 | #ifdef CONFIG_64BIT |
1da177e4 LT |
150 | int i; |
151 | unsigned int *p = (unsigned int *)addr; | |
152 | ||
8a5aa00e HD |
153 | if (unlikely(parisc_narrow_firmware)) { |
154 | for (i = (NUM_PDC_RESULT-1); i >= 0; --i) | |
1da177e4 LT |
155 | addr[i] = p[i]; |
156 | } | |
157 | #endif | |
158 | } | |
159 | ||
24b574d0 | 160 | #ifdef CONFIG_64BIT |
60ffef06 | 161 | void set_firmware_width_unlocked(void) |
24b574d0 KM |
162 | { |
163 | int ret; | |
164 | ||
165 | ret = mem_pdc_call(PDC_MODEL, PDC_MODEL_CAPABILITIES, | |
166 | __pa(pdc_result), 0); | |
167 | convert_to_wide(pdc_result); | |
168 | if (pdc_result[0] != NARROW_FIRMWARE) | |
169 | parisc_narrow_firmware = 0; | |
170 | } | |
171 | ||
1da177e4 LT |
172 | /** |
173 | * set_firmware_width - Determine if the firmware is wide or narrow. | |
174 | * | |
24b574d0 KM |
175 | * This function must be called before any pdc_* function that uses the |
176 | * convert_to_wide function. | |
1da177e4 | 177 | */ |
60ffef06 | 178 | void set_firmware_width(void) |
1da177e4 | 179 | { |
09690b18 | 180 | unsigned long flags; |
24b574d0 KM |
181 | spin_lock_irqsave(&pdc_lock, flags); |
182 | set_firmware_width_unlocked(); | |
183 | spin_unlock_irqrestore(&pdc_lock, flags); | |
184 | } | |
185 | #else | |
60ffef06 PG |
186 | void set_firmware_width_unlocked(void) |
187 | { | |
24b574d0 KM |
188 | return; |
189 | } | |
1da177e4 | 190 | |
60ffef06 PG |
191 | void set_firmware_width(void) |
192 | { | |
24b574d0 | 193 | return; |
1da177e4 | 194 | } |
24b574d0 | 195 | #endif /*CONFIG_64BIT*/ |
1da177e4 | 196 | |
f5213b2c HD |
197 | |
198 | #if !defined(BOOTLOADER) | |
1da177e4 LT |
199 | /** |
200 | * pdc_emergency_unlock - Unlock the linux pdc lock | |
201 | * | |
202 | * This call unlocks the linux pdc lock in case we need some PDC functions | |
203 | * (like pdc_add_valid) during kernel stack dump. | |
204 | */ | |
205 | void pdc_emergency_unlock(void) | |
206 | { | |
207 | /* Spinlock DEBUG code freaks out if we unconditionally unlock */ | |
208 | if (spin_is_locked(&pdc_lock)) | |
209 | spin_unlock(&pdc_lock); | |
210 | } | |
211 | ||
212 | ||
213 | /** | |
214 | * pdc_add_valid - Verify address can be accessed without causing a HPMC. | |
215 | * @address: Address to be verified. | |
216 | * | |
217 | * This PDC call attempts to read from the specified address and verifies | |
218 | * if the address is valid. | |
219 | * | |
220 | * The return value is PDC_OK (0) in case accessing this address is valid. | |
221 | */ | |
222 | int pdc_add_valid(unsigned long address) | |
223 | { | |
224 | int retval; | |
09690b18 | 225 | unsigned long flags; |
1da177e4 | 226 | |
09690b18 | 227 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 | 228 | retval = mem_pdc_call(PDC_ADD_VALID, PDC_ADD_VALID_VERIFY, address); |
09690b18 | 229 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
230 | |
231 | return retval; | |
232 | } | |
233 | EXPORT_SYMBOL(pdc_add_valid); | |
234 | ||
77089c52 HD |
235 | /** |
236 | * pdc_instr - Get instruction that invokes PDCE_CHECK in HPMC handler. | |
237 | * @instr: Pointer to variable which will get instruction opcode. | |
238 | * | |
239 | * The return value is PDC_OK (0) in case call succeeded. | |
240 | */ | |
241 | int __init pdc_instr(unsigned int *instr) | |
242 | { | |
243 | int retval; | |
244 | unsigned long flags; | |
245 | ||
246 | spin_lock_irqsave(&pdc_lock, flags); | |
247 | retval = mem_pdc_call(PDC_INSTR, 0UL, __pa(pdc_result)); | |
248 | convert_to_wide(pdc_result); | |
249 | *instr = pdc_result[0]; | |
250 | spin_unlock_irqrestore(&pdc_lock, flags); | |
251 | ||
252 | return retval; | |
253 | } | |
254 | ||
1da177e4 LT |
255 | /** |
256 | * pdc_chassis_info - Return chassis information. | |
257 | * @result: The return buffer. | |
258 | * @chassis_info: The memory buffer address. | |
259 | * @len: The size of the memory buffer address. | |
260 | * | |
261 | * An HVERSION dependent call for returning the chassis information. | |
262 | */ | |
263 | int __init pdc_chassis_info(struct pdc_chassis_info *chassis_info, void *led_info, unsigned long len) | |
264 | { | |
265 | int retval; | |
09690b18 | 266 | unsigned long flags; |
1da177e4 | 267 | |
09690b18 | 268 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
269 | memcpy(&pdc_result, chassis_info, sizeof(*chassis_info)); |
270 | memcpy(&pdc_result2, led_info, len); | |
271 | retval = mem_pdc_call(PDC_CHASSIS, PDC_RETURN_CHASSIS_INFO, | |
272 | __pa(pdc_result), __pa(pdc_result2), len); | |
273 | memcpy(chassis_info, pdc_result, sizeof(*chassis_info)); | |
274 | memcpy(led_info, pdc_result2, len); | |
09690b18 | 275 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
276 | |
277 | return retval; | |
278 | } | |
279 | ||
280 | /** | |
281 | * pdc_pat_chassis_send_log - Sends a PDC PAT CHASSIS log message. | |
282 | * @retval: -1 on error, 0 on success. Other value are PDC errors | |
283 | * | |
284 | * Must be correctly formatted or expect system crash | |
285 | */ | |
a8f44e38 | 286 | #ifdef CONFIG_64BIT |
1da177e4 LT |
287 | int pdc_pat_chassis_send_log(unsigned long state, unsigned long data) |
288 | { | |
289 | int retval = 0; | |
09690b18 | 290 | unsigned long flags; |
1da177e4 LT |
291 | |
292 | if (!is_pdc_pat()) | |
293 | return -1; | |
294 | ||
09690b18 | 295 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 | 296 | retval = mem_pdc_call(PDC_PAT_CHASSIS_LOG, PDC_PAT_CHASSIS_WRITE_LOG, __pa(&state), __pa(&data)); |
09690b18 | 297 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
298 | |
299 | return retval; | |
300 | } | |
301 | #endif | |
302 | ||
303 | /** | |
8ffaeaf4 | 304 | * pdc_chassis_disp - Updates chassis code |
1da177e4 | 305 | * @retval: -1 on error, 0 on success |
1da177e4 LT |
306 | */ |
307 | int pdc_chassis_disp(unsigned long disp) | |
308 | { | |
309 | int retval = 0; | |
09690b18 | 310 | unsigned long flags; |
1da177e4 | 311 | |
09690b18 | 312 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 | 313 | retval = mem_pdc_call(PDC_CHASSIS, PDC_CHASSIS_DISP, disp); |
09690b18 | 314 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
315 | |
316 | return retval; | |
317 | } | |
318 | ||
8ffaeaf4 TV |
319 | /** |
320 | * pdc_chassis_warn - Fetches chassis warnings | |
321 | * @retval: -1 on error, 0 on success | |
322 | */ | |
323 | int pdc_chassis_warn(unsigned long *warn) | |
324 | { | |
325 | int retval = 0; | |
09690b18 | 326 | unsigned long flags; |
8ffaeaf4 | 327 | |
09690b18 | 328 | spin_lock_irqsave(&pdc_lock, flags); |
8ffaeaf4 TV |
329 | retval = mem_pdc_call(PDC_CHASSIS, PDC_CHASSIS_WARN, __pa(pdc_result)); |
330 | *warn = pdc_result[0]; | |
09690b18 | 331 | spin_unlock_irqrestore(&pdc_lock, flags); |
8ffaeaf4 TV |
332 | |
333 | return retval; | |
334 | } | |
335 | ||
60ffef06 | 336 | int pdc_coproc_cfg_unlocked(struct pdc_coproc_cfg *pdc_coproc_info) |
24b574d0 KM |
337 | { |
338 | int ret; | |
339 | ||
340 | ret = mem_pdc_call(PDC_COPROC, PDC_COPROC_CFG, __pa(pdc_result)); | |
341 | convert_to_wide(pdc_result); | |
342 | pdc_coproc_info->ccr_functional = pdc_result[0]; | |
343 | pdc_coproc_info->ccr_present = pdc_result[1]; | |
344 | pdc_coproc_info->revision = pdc_result[17]; | |
345 | pdc_coproc_info->model = pdc_result[18]; | |
346 | ||
347 | return ret; | |
348 | } | |
349 | ||
1da177e4 LT |
350 | /** |
351 | * pdc_coproc_cfg - To identify coprocessors attached to the processor. | |
352 | * @pdc_coproc_info: Return buffer address. | |
353 | * | |
354 | * This PDC call returns the presence and status of all the coprocessors | |
355 | * attached to the processor. | |
356 | */ | |
60ffef06 | 357 | int pdc_coproc_cfg(struct pdc_coproc_cfg *pdc_coproc_info) |
1da177e4 | 358 | { |
24b574d0 | 359 | int ret; |
09690b18 | 360 | unsigned long flags; |
1da177e4 | 361 | |
24b574d0 KM |
362 | spin_lock_irqsave(&pdc_lock, flags); |
363 | ret = pdc_coproc_cfg_unlocked(pdc_coproc_info); | |
364 | spin_unlock_irqrestore(&pdc_lock, flags); | |
1da177e4 | 365 | |
24b574d0 | 366 | return ret; |
1da177e4 LT |
367 | } |
368 | ||
369 | /** | |
370 | * pdc_iodc_read - Read data from the modules IODC. | |
371 | * @actcnt: The actual number of bytes. | |
372 | * @hpa: The HPA of the module for the iodc read. | |
373 | * @index: The iodc entry point. | |
374 | * @iodc_data: A buffer memory for the iodc options. | |
375 | * @iodc_data_size: Size of the memory buffer. | |
376 | * | |
377 | * This PDC call reads from the IODC of the module specified by the hpa | |
378 | * argument. | |
379 | */ | |
380 | int pdc_iodc_read(unsigned long *actcnt, unsigned long hpa, unsigned int index, | |
381 | void *iodc_data, unsigned int iodc_data_size) | |
382 | { | |
383 | int retval; | |
09690b18 | 384 | unsigned long flags; |
1da177e4 | 385 | |
09690b18 | 386 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
387 | retval = mem_pdc_call(PDC_IODC, PDC_IODC_READ, __pa(pdc_result), hpa, |
388 | index, __pa(pdc_result2), iodc_data_size); | |
389 | convert_to_wide(pdc_result); | |
390 | *actcnt = pdc_result[0]; | |
391 | memcpy(iodc_data, pdc_result2, iodc_data_size); | |
09690b18 | 392 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
393 | |
394 | return retval; | |
395 | } | |
396 | EXPORT_SYMBOL(pdc_iodc_read); | |
397 | ||
398 | /** | |
399 | * pdc_system_map_find_mods - Locate unarchitected modules. | |
400 | * @pdc_mod_info: Return buffer address. | |
401 | * @mod_path: pointer to dev path structure. | |
402 | * @mod_index: fixed address module index. | |
403 | * | |
404 | * To locate and identify modules which reside at fixed I/O addresses, which | |
405 | * do not self-identify via architected bus walks. | |
406 | */ | |
407 | int pdc_system_map_find_mods(struct pdc_system_map_mod_info *pdc_mod_info, | |
408 | struct pdc_module_path *mod_path, long mod_index) | |
409 | { | |
410 | int retval; | |
09690b18 | 411 | unsigned long flags; |
1da177e4 | 412 | |
09690b18 | 413 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
414 | retval = mem_pdc_call(PDC_SYSTEM_MAP, PDC_FIND_MODULE, __pa(pdc_result), |
415 | __pa(pdc_result2), mod_index); | |
416 | convert_to_wide(pdc_result); | |
417 | memcpy(pdc_mod_info, pdc_result, sizeof(*pdc_mod_info)); | |
418 | memcpy(mod_path, pdc_result2, sizeof(*mod_path)); | |
09690b18 | 419 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
420 | |
421 | pdc_mod_info->mod_addr = f_extend(pdc_mod_info->mod_addr); | |
422 | return retval; | |
423 | } | |
424 | ||
425 | /** | |
426 | * pdc_system_map_find_addrs - Retrieve additional address ranges. | |
427 | * @pdc_addr_info: Return buffer address. | |
428 | * @mod_index: Fixed address module index. | |
429 | * @addr_index: Address range index. | |
430 | * | |
431 | * Retrieve additional information about subsequent address ranges for modules | |
432 | * with multiple address ranges. | |
433 | */ | |
434 | int pdc_system_map_find_addrs(struct pdc_system_map_addr_info *pdc_addr_info, | |
435 | long mod_index, long addr_index) | |
436 | { | |
437 | int retval; | |
09690b18 | 438 | unsigned long flags; |
1da177e4 | 439 | |
09690b18 | 440 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
441 | retval = mem_pdc_call(PDC_SYSTEM_MAP, PDC_FIND_ADDRESS, __pa(pdc_result), |
442 | mod_index, addr_index); | |
443 | convert_to_wide(pdc_result); | |
444 | memcpy(pdc_addr_info, pdc_result, sizeof(*pdc_addr_info)); | |
09690b18 | 445 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
446 | |
447 | pdc_addr_info->mod_addr = f_extend(pdc_addr_info->mod_addr); | |
448 | return retval; | |
449 | } | |
450 | ||
451 | /** | |
452 | * pdc_model_info - Return model information about the processor. | |
453 | * @model: The return buffer. | |
454 | * | |
455 | * Returns the version numbers, identifiers, and capabilities from the processor module. | |
456 | */ | |
457 | int pdc_model_info(struct pdc_model *model) | |
458 | { | |
459 | int retval; | |
09690b18 | 460 | unsigned long flags; |
1da177e4 | 461 | |
09690b18 | 462 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
463 | retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_INFO, __pa(pdc_result), 0); |
464 | convert_to_wide(pdc_result); | |
465 | memcpy(model, pdc_result, sizeof(*model)); | |
09690b18 | 466 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
467 | |
468 | return retval; | |
469 | } | |
470 | ||
471 | /** | |
472 | * pdc_model_sysmodel - Get the system model name. | |
473 | * @name: A char array of at least 81 characters. | |
474 | * | |
ec1fdc24 KM |
475 | * Get system model name from PDC ROM (e.g. 9000/715 or 9000/778/B160L). |
476 | * Using OS_ID_HPUX will return the equivalent of the 'modelname' command | |
477 | * on HP/UX. | |
1da177e4 LT |
478 | */ |
479 | int pdc_model_sysmodel(char *name) | |
480 | { | |
481 | int retval; | |
09690b18 | 482 | unsigned long flags; |
1da177e4 | 483 | |
09690b18 | 484 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
485 | retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_SYSMODEL, __pa(pdc_result), |
486 | OS_ID_HPUX, __pa(name)); | |
487 | convert_to_wide(pdc_result); | |
488 | ||
489 | if (retval == PDC_OK) { | |
490 | name[pdc_result[0]] = '\0'; /* add trailing '\0' */ | |
491 | } else { | |
492 | name[0] = 0; | |
493 | } | |
09690b18 | 494 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
495 | |
496 | return retval; | |
497 | } | |
498 | ||
499 | /** | |
500 | * pdc_model_versions - Identify the version number of each processor. | |
501 | * @cpu_id: The return buffer. | |
502 | * @id: The id of the processor to check. | |
503 | * | |
504 | * Returns the version number for each processor component. | |
505 | * | |
506 | * This comment was here before, but I do not know what it means :( -RB | |
507 | * id: 0 = cpu revision, 1 = boot-rom-version | |
508 | */ | |
509 | int pdc_model_versions(unsigned long *versions, int id) | |
510 | { | |
511 | int retval; | |
09690b18 | 512 | unsigned long flags; |
1da177e4 | 513 | |
09690b18 | 514 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
515 | retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_VERSIONS, __pa(pdc_result), id); |
516 | convert_to_wide(pdc_result); | |
517 | *versions = pdc_result[0]; | |
09690b18 | 518 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
519 | |
520 | return retval; | |
521 | } | |
522 | ||
523 | /** | |
524 | * pdc_model_cpuid - Returns the CPU_ID. | |
525 | * @cpu_id: The return buffer. | |
526 | * | |
527 | * Returns the CPU_ID value which uniquely identifies the cpu portion of | |
528 | * the processor module. | |
529 | */ | |
530 | int pdc_model_cpuid(unsigned long *cpu_id) | |
531 | { | |
532 | int retval; | |
09690b18 | 533 | unsigned long flags; |
1da177e4 | 534 | |
09690b18 | 535 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
536 | pdc_result[0] = 0; /* preset zero (call may not be implemented!) */ |
537 | retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_CPU_ID, __pa(pdc_result), 0); | |
538 | convert_to_wide(pdc_result); | |
539 | *cpu_id = pdc_result[0]; | |
09690b18 | 540 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
541 | |
542 | return retval; | |
543 | } | |
544 | ||
545 | /** | |
546 | * pdc_model_capabilities - Returns the platform capabilities. | |
547 | * @capabilities: The return buffer. | |
548 | * | |
549 | * Returns information about platform support for 32- and/or 64-bit | |
550 | * OSes, IO-PDIR coherency, and virtual aliasing. | |
551 | */ | |
552 | int pdc_model_capabilities(unsigned long *capabilities) | |
553 | { | |
554 | int retval; | |
09690b18 | 555 | unsigned long flags; |
1da177e4 | 556 | |
09690b18 | 557 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
558 | pdc_result[0] = 0; /* preset zero (call may not be implemented!) */ |
559 | retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_CAPABILITIES, __pa(pdc_result), 0); | |
560 | convert_to_wide(pdc_result); | |
445c088f CW |
561 | if (retval == PDC_OK) { |
562 | *capabilities = pdc_result[0]; | |
563 | } else { | |
564 | *capabilities = PDC_MODEL_OS32; | |
565 | } | |
09690b18 | 566 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
567 | |
568 | return retval; | |
569 | } | |
570 | ||
8207d4ee HD |
571 | /** |
572 | * pdc_model_platform_info - Returns machine product and serial number. | |
573 | * @orig_prod_num: Return buffer for original product number. | |
574 | * @current_prod_num: Return buffer for current product number. | |
575 | * @serial_no: Return buffer for serial number. | |
576 | * | |
577 | * Returns strings containing the original and current product numbers and the | |
578 | * serial number of the system. | |
579 | */ | |
580 | int pdc_model_platform_info(char *orig_prod_num, char *current_prod_num, | |
581 | char *serial_no) | |
582 | { | |
583 | int retval; | |
584 | unsigned long flags; | |
585 | ||
586 | spin_lock_irqsave(&pdc_lock, flags); | |
587 | retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_GET_PLATFORM_INFO, | |
588 | __pa(orig_prod_num), __pa(current_prod_num), __pa(serial_no)); | |
589 | convert_to_wide(pdc_result); | |
590 | spin_unlock_irqrestore(&pdc_lock, flags); | |
591 | ||
592 | return retval; | |
593 | } | |
594 | ||
1da177e4 LT |
595 | /** |
596 | * pdc_cache_info - Return cache and TLB information. | |
597 | * @cache_info: The return buffer. | |
598 | * | |
599 | * Returns information about the processor's cache and TLB. | |
600 | */ | |
601 | int pdc_cache_info(struct pdc_cache_info *cache_info) | |
602 | { | |
603 | int retval; | |
09690b18 | 604 | unsigned long flags; |
1da177e4 | 605 | |
09690b18 | 606 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
607 | retval = mem_pdc_call(PDC_CACHE, PDC_CACHE_INFO, __pa(pdc_result), 0); |
608 | convert_to_wide(pdc_result); | |
609 | memcpy(cache_info, pdc_result, sizeof(*cache_info)); | |
09690b18 | 610 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
611 | |
612 | return retval; | |
613 | } | |
614 | ||
a9d2d386 KM |
615 | /** |
616 | * pdc_spaceid_bits - Return whether Space ID hashing is turned on. | |
617 | * @space_bits: Should be 0, if not, bad mojo! | |
618 | * | |
619 | * Returns information about Space ID hashing. | |
620 | */ | |
621 | int pdc_spaceid_bits(unsigned long *space_bits) | |
622 | { | |
623 | int retval; | |
09690b18 | 624 | unsigned long flags; |
a9d2d386 | 625 | |
09690b18 | 626 | spin_lock_irqsave(&pdc_lock, flags); |
a9d2d386 KM |
627 | pdc_result[0] = 0; |
628 | retval = mem_pdc_call(PDC_CACHE, PDC_CACHE_RET_SPID, __pa(pdc_result), 0); | |
629 | convert_to_wide(pdc_result); | |
630 | *space_bits = pdc_result[0]; | |
09690b18 | 631 | spin_unlock_irqrestore(&pdc_lock, flags); |
a9d2d386 KM |
632 | |
633 | return retval; | |
634 | } | |
635 | ||
1da177e4 LT |
636 | #ifndef CONFIG_PA20 |
637 | /** | |
638 | * pdc_btlb_info - Return block TLB information. | |
639 | * @btlb: The return buffer. | |
640 | * | |
641 | * Returns information about the hardware Block TLB. | |
642 | */ | |
643 | int pdc_btlb_info(struct pdc_btlb_info *btlb) | |
644 | { | |
645 | int retval; | |
09690b18 | 646 | unsigned long flags; |
1da177e4 | 647 | |
09690b18 | 648 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
649 | retval = mem_pdc_call(PDC_BLOCK_TLB, PDC_BTLB_INFO, __pa(pdc_result), 0); |
650 | memcpy(btlb, pdc_result, sizeof(*btlb)); | |
09690b18 | 651 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
652 | |
653 | if(retval < 0) { | |
654 | btlb->max_size = 0; | |
655 | } | |
656 | return retval; | |
657 | } | |
658 | ||
659 | /** | |
660 | * pdc_mem_map_hpa - Find fixed module information. | |
661 | * @address: The return buffer | |
662 | * @mod_path: pointer to dev path structure. | |
663 | * | |
664 | * This call was developed for S700 workstations to allow the kernel to find | |
665 | * the I/O devices (Core I/O). In the future (Kittyhawk and beyond) this | |
666 | * call will be replaced (on workstations) by the architected PDC_SYSTEM_MAP | |
667 | * call. | |
668 | * | |
669 | * This call is supported by all existing S700 workstations (up to Gecko). | |
670 | */ | |
671 | int pdc_mem_map_hpa(struct pdc_memory_map *address, | |
672 | struct pdc_module_path *mod_path) | |
673 | { | |
674 | int retval; | |
09690b18 | 675 | unsigned long flags; |
1da177e4 | 676 | |
09690b18 | 677 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
678 | memcpy(pdc_result2, mod_path, sizeof(*mod_path)); |
679 | retval = mem_pdc_call(PDC_MEM_MAP, PDC_MEM_MAP_HPA, __pa(pdc_result), | |
680 | __pa(pdc_result2)); | |
681 | memcpy(address, pdc_result, sizeof(*address)); | |
09690b18 | 682 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
683 | |
684 | return retval; | |
685 | } | |
686 | #endif /* !CONFIG_PA20 */ | |
687 | ||
688 | /** | |
689 | * pdc_lan_station_id - Get the LAN address. | |
690 | * @lan_addr: The return buffer. | |
691 | * @hpa: The network device HPA. | |
692 | * | |
693 | * Get the LAN station address when it is not directly available from the LAN hardware. | |
694 | */ | |
695 | int pdc_lan_station_id(char *lan_addr, unsigned long hpa) | |
696 | { | |
697 | int retval; | |
09690b18 | 698 | unsigned long flags; |
1da177e4 | 699 | |
09690b18 | 700 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
701 | retval = mem_pdc_call(PDC_LAN_STATION_ID, PDC_LAN_STATION_ID_READ, |
702 | __pa(pdc_result), hpa); | |
703 | if (retval < 0) { | |
704 | /* FIXME: else read MAC from NVRAM */ | |
705 | memset(lan_addr, 0, PDC_LAN_STATION_ID_SIZE); | |
706 | } else { | |
707 | memcpy(lan_addr, pdc_result, PDC_LAN_STATION_ID_SIZE); | |
708 | } | |
09690b18 | 709 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
710 | |
711 | return retval; | |
712 | } | |
713 | EXPORT_SYMBOL(pdc_lan_station_id); | |
714 | ||
715 | /** | |
716 | * pdc_stable_read - Read data from Stable Storage. | |
717 | * @staddr: Stable Storage address to access. | |
718 | * @memaddr: The memory address where Stable Storage data shall be copied. | |
7022672e | 719 | * @count: number of bytes to transfer. count is multiple of 4. |
1da177e4 LT |
720 | * |
721 | * This PDC call reads from the Stable Storage address supplied in staddr | |
722 | * and copies count bytes to the memory address memaddr. | |
723 | * The call will fail if staddr+count > PDC_STABLE size. | |
724 | */ | |
725 | int pdc_stable_read(unsigned long staddr, void *memaddr, unsigned long count) | |
726 | { | |
727 | int retval; | |
09690b18 | 728 | unsigned long flags; |
1da177e4 | 729 | |
09690b18 | 730 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
731 | retval = mem_pdc_call(PDC_STABLE, PDC_STABLE_READ, staddr, |
732 | __pa(pdc_result), count); | |
733 | convert_to_wide(pdc_result); | |
734 | memcpy(memaddr, pdc_result, count); | |
09690b18 | 735 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
736 | |
737 | return retval; | |
738 | } | |
739 | EXPORT_SYMBOL(pdc_stable_read); | |
740 | ||
741 | /** | |
742 | * pdc_stable_write - Write data to Stable Storage. | |
743 | * @staddr: Stable Storage address to access. | |
744 | * @memaddr: The memory address where Stable Storage data shall be read from. | |
7022672e | 745 | * @count: number of bytes to transfer. count is multiple of 4. |
1da177e4 LT |
746 | * |
747 | * This PDC call reads count bytes from the supplied memaddr address, | |
748 | * and copies count bytes to the Stable Storage address staddr. | |
749 | * The call will fail if staddr+count > PDC_STABLE size. | |
750 | */ | |
751 | int pdc_stable_write(unsigned long staddr, void *memaddr, unsigned long count) | |
752 | { | |
753 | int retval; | |
09690b18 | 754 | unsigned long flags; |
1da177e4 | 755 | |
09690b18 | 756 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
757 | memcpy(pdc_result, memaddr, count); |
758 | convert_to_wide(pdc_result); | |
759 | retval = mem_pdc_call(PDC_STABLE, PDC_STABLE_WRITE, staddr, | |
760 | __pa(pdc_result), count); | |
09690b18 | 761 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
762 | |
763 | return retval; | |
764 | } | |
765 | EXPORT_SYMBOL(pdc_stable_write); | |
766 | ||
767 | /** | |
768 | * pdc_stable_get_size - Get Stable Storage size in bytes. | |
769 | * @size: pointer where the size will be stored. | |
770 | * | |
771 | * This PDC call returns the number of bytes in the processor's Stable | |
772 | * Storage, which is the number of contiguous bytes implemented in Stable | |
773 | * Storage starting from staddr=0. size in an unsigned 64-bit integer | |
774 | * which is a multiple of four. | |
775 | */ | |
776 | int pdc_stable_get_size(unsigned long *size) | |
777 | { | |
778 | int retval; | |
09690b18 | 779 | unsigned long flags; |
1da177e4 | 780 | |
09690b18 | 781 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
782 | retval = mem_pdc_call(PDC_STABLE, PDC_STABLE_RETURN_SIZE, __pa(pdc_result)); |
783 | *size = pdc_result[0]; | |
09690b18 | 784 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
785 | |
786 | return retval; | |
787 | } | |
788 | EXPORT_SYMBOL(pdc_stable_get_size); | |
789 | ||
790 | /** | |
791 | * pdc_stable_verify_contents - Checks that Stable Storage contents are valid. | |
792 | * | |
793 | * This PDC call is meant to be used to check the integrity of the current | |
794 | * contents of Stable Storage. | |
795 | */ | |
796 | int pdc_stable_verify_contents(void) | |
797 | { | |
798 | int retval; | |
09690b18 | 799 | unsigned long flags; |
1da177e4 | 800 | |
09690b18 | 801 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 | 802 | retval = mem_pdc_call(PDC_STABLE, PDC_STABLE_VERIFY_CONTENTS); |
09690b18 | 803 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
804 | |
805 | return retval; | |
806 | } | |
807 | EXPORT_SYMBOL(pdc_stable_verify_contents); | |
808 | ||
809 | /** | |
810 | * pdc_stable_initialize - Sets Stable Storage contents to zero and initialize | |
811 | * the validity indicator. | |
812 | * | |
813 | * This PDC call will erase all contents of Stable Storage. Use with care! | |
814 | */ | |
815 | int pdc_stable_initialize(void) | |
816 | { | |
817 | int retval; | |
09690b18 | 818 | unsigned long flags; |
1da177e4 | 819 | |
09690b18 | 820 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 | 821 | retval = mem_pdc_call(PDC_STABLE, PDC_STABLE_INITIALIZE); |
09690b18 | 822 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
823 | |
824 | return retval; | |
825 | } | |
826 | EXPORT_SYMBOL(pdc_stable_initialize); | |
827 | ||
828 | /** | |
829 | * pdc_get_initiator - Get the SCSI Interface Card params (SCSI ID, SDTR, SE or LVD) | |
830 | * @hwpath: fully bc.mod style path to the device. | |
831 | * @initiator: the array to return the result into | |
832 | * | |
833 | * Get the SCSI operational parameters from PDC. | |
834 | * Needed since HPUX never used BIOS or symbios card NVRAM. | |
835 | * Most ncr/sym cards won't have an entry and just use whatever | |
836 | * capabilities of the card are (eg Ultra, LVD). But there are | |
837 | * several cases where it's useful: | |
838 | * o set SCSI id for Multi-initiator clusters, | |
839 | * o cable too long (ie SE scsi 10Mhz won't support 6m length), | |
840 | * o bus width exported is less than what the interface chip supports. | |
841 | */ | |
842 | int pdc_get_initiator(struct hardware_path *hwpath, struct pdc_initiator *initiator) | |
843 | { | |
844 | int retval; | |
09690b18 | 845 | unsigned long flags; |
1da177e4 | 846 | |
09690b18 | 847 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
848 | |
849 | /* BCJ-XXXX series boxes. E.G. "9000/785/C3000" */ | |
850 | #define IS_SPROCKETS() (strlen(boot_cpu_data.pdc.sys_model_name) == 14 && \ | |
851 | strncmp(boot_cpu_data.pdc.sys_model_name, "9000/785", 8) == 0) | |
852 | ||
853 | retval = mem_pdc_call(PDC_INITIATOR, PDC_GET_INITIATOR, | |
854 | __pa(pdc_result), __pa(hwpath)); | |
855 | if (retval < PDC_OK) | |
856 | goto out; | |
857 | ||
858 | if (pdc_result[0] < 16) { | |
859 | initiator->host_id = pdc_result[0]; | |
860 | } else { | |
861 | initiator->host_id = -1; | |
862 | } | |
863 | ||
864 | /* | |
865 | * Sprockets and Piranha return 20 or 40 (MT/s). Prelude returns | |
866 | * 1, 2, 5 or 10 for 5, 10, 20 or 40 MT/s, respectively | |
867 | */ | |
868 | switch (pdc_result[1]) { | |
869 | case 1: initiator->factor = 50; break; | |
870 | case 2: initiator->factor = 25; break; | |
871 | case 5: initiator->factor = 12; break; | |
872 | case 25: initiator->factor = 10; break; | |
873 | case 20: initiator->factor = 12; break; | |
874 | case 40: initiator->factor = 10; break; | |
875 | default: initiator->factor = -1; break; | |
876 | } | |
877 | ||
878 | if (IS_SPROCKETS()) { | |
879 | initiator->width = pdc_result[4]; | |
880 | initiator->mode = pdc_result[5]; | |
881 | } else { | |
882 | initiator->width = -1; | |
883 | initiator->mode = -1; | |
884 | } | |
885 | ||
886 | out: | |
09690b18 KM |
887 | spin_unlock_irqrestore(&pdc_lock, flags); |
888 | ||
1da177e4 LT |
889 | return (retval >= PDC_OK); |
890 | } | |
891 | EXPORT_SYMBOL(pdc_get_initiator); | |
892 | ||
893 | ||
894 | /** | |
895 | * pdc_pci_irt_size - Get the number of entries in the interrupt routing table. | |
896 | * @num_entries: The return value. | |
897 | * @hpa: The HPA for the device. | |
898 | * | |
899 | * This PDC function returns the number of entries in the specified cell's | |
900 | * interrupt table. | |
901 | * Similar to PDC_PAT stuff - but added for Forte/Allegro boxes | |
902 | */ | |
903 | int pdc_pci_irt_size(unsigned long *num_entries, unsigned long hpa) | |
904 | { | |
905 | int retval; | |
09690b18 | 906 | unsigned long flags; |
1da177e4 | 907 | |
09690b18 | 908 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
909 | retval = mem_pdc_call(PDC_PCI_INDEX, PDC_PCI_GET_INT_TBL_SIZE, |
910 | __pa(pdc_result), hpa); | |
911 | convert_to_wide(pdc_result); | |
912 | *num_entries = pdc_result[0]; | |
09690b18 | 913 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
914 | |
915 | return retval; | |
916 | } | |
917 | ||
918 | /** | |
919 | * pdc_pci_irt - Get the PCI interrupt routing table. | |
920 | * @num_entries: The number of entries in the table. | |
921 | * @hpa: The Hard Physical Address of the device. | |
922 | * @tbl: | |
923 | * | |
924 | * Get the PCI interrupt routing table for the device at the given HPA. | |
925 | * Similar to PDC_PAT stuff - but added for Forte/Allegro boxes | |
926 | */ | |
927 | int pdc_pci_irt(unsigned long num_entries, unsigned long hpa, void *tbl) | |
928 | { | |
929 | int retval; | |
09690b18 | 930 | unsigned long flags; |
1da177e4 LT |
931 | |
932 | BUG_ON((unsigned long)tbl & 0x7); | |
933 | ||
09690b18 | 934 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
935 | pdc_result[0] = num_entries; |
936 | retval = mem_pdc_call(PDC_PCI_INDEX, PDC_PCI_GET_INT_TBL, | |
937 | __pa(pdc_result), hpa, __pa(tbl)); | |
09690b18 | 938 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
939 | |
940 | return retval; | |
941 | } | |
942 | ||
943 | ||
944 | #if 0 /* UNTEST CODE - left here in case someone needs it */ | |
945 | ||
946 | /** | |
947 | * pdc_pci_config_read - read PCI config space. | |
948 | * @hpa token from PDC to indicate which PCI device | |
949 | * @pci_addr configuration space address to read from | |
950 | * | |
951 | * Read PCI Configuration space *before* linux PCI subsystem is running. | |
952 | */ | |
953 | unsigned int pdc_pci_config_read(void *hpa, unsigned long cfg_addr) | |
954 | { | |
955 | int retval; | |
09690b18 KM |
956 | unsigned long flags; |
957 | ||
958 | spin_lock_irqsave(&pdc_lock, flags); | |
1da177e4 LT |
959 | pdc_result[0] = 0; |
960 | pdc_result[1] = 0; | |
961 | retval = mem_pdc_call(PDC_PCI_INDEX, PDC_PCI_READ_CONFIG, | |
962 | __pa(pdc_result), hpa, cfg_addr&~3UL, 4UL); | |
09690b18 KM |
963 | spin_unlock_irqrestore(&pdc_lock, flags); |
964 | ||
1da177e4 LT |
965 | return retval ? ~0 : (unsigned int) pdc_result[0]; |
966 | } | |
967 | ||
968 | ||
969 | /** | |
970 | * pdc_pci_config_write - read PCI config space. | |
971 | * @hpa token from PDC to indicate which PCI device | |
972 | * @pci_addr configuration space address to write | |
973 | * @val value we want in the 32-bit register | |
974 | * | |
975 | * Write PCI Configuration space *before* linux PCI subsystem is running. | |
976 | */ | |
977 | void pdc_pci_config_write(void *hpa, unsigned long cfg_addr, unsigned int val) | |
978 | { | |
979 | int retval; | |
09690b18 KM |
980 | unsigned long flags; |
981 | ||
982 | spin_lock_irqsave(&pdc_lock, flags); | |
1da177e4 LT |
983 | pdc_result[0] = 0; |
984 | retval = mem_pdc_call(PDC_PCI_INDEX, PDC_PCI_WRITE_CONFIG, | |
985 | __pa(pdc_result), hpa, | |
986 | cfg_addr&~3UL, 4UL, (unsigned long) val); | |
09690b18 KM |
987 | spin_unlock_irqrestore(&pdc_lock, flags); |
988 | ||
1da177e4 LT |
989 | return retval; |
990 | } | |
991 | #endif /* UNTESTED CODE */ | |
992 | ||
993 | /** | |
994 | * pdc_tod_read - Read the Time-Of-Day clock. | |
995 | * @tod: The return buffer: | |
996 | * | |
997 | * Read the Time-Of-Day clock | |
998 | */ | |
999 | int pdc_tod_read(struct pdc_tod *tod) | |
1000 | { | |
1001 | int retval; | |
09690b18 | 1002 | unsigned long flags; |
1da177e4 | 1003 | |
09690b18 | 1004 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1005 | retval = mem_pdc_call(PDC_TOD, PDC_TOD_READ, __pa(pdc_result), 0); |
1006 | convert_to_wide(pdc_result); | |
1007 | memcpy(tod, pdc_result, sizeof(*tod)); | |
09690b18 | 1008 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1009 | |
1010 | return retval; | |
1011 | } | |
1012 | EXPORT_SYMBOL(pdc_tod_read); | |
1013 | ||
c9c2877d HD |
1014 | int pdc_mem_pdt_info(struct pdc_mem_retinfo *rinfo) |
1015 | { | |
1016 | int retval; | |
1017 | unsigned long flags; | |
1018 | ||
1019 | spin_lock_irqsave(&pdc_lock, flags); | |
1020 | retval = mem_pdc_call(PDC_MEM, PDC_MEM_MEMINFO, __pa(pdc_result), 0); | |
1021 | convert_to_wide(pdc_result); | |
1022 | memcpy(rinfo, pdc_result, sizeof(*rinfo)); | |
1023 | spin_unlock_irqrestore(&pdc_lock, flags); | |
1024 | ||
1025 | return retval; | |
1026 | } | |
1027 | ||
1028 | int pdc_mem_pdt_read_entries(struct pdc_mem_read_pdt *pret, | |
1029 | unsigned long *pdt_entries_ptr) | |
1030 | { | |
1031 | int retval; | |
1032 | unsigned long flags; | |
1033 | ||
1034 | spin_lock_irqsave(&pdc_lock, flags); | |
1035 | retval = mem_pdc_call(PDC_MEM, PDC_MEM_READ_PDT, __pa(pdc_result), | |
8a5aa00e | 1036 | __pa(pdt_entries_ptr)); |
c9c2877d HD |
1037 | if (retval == PDC_OK) { |
1038 | convert_to_wide(pdc_result); | |
1039 | memcpy(pret, pdc_result, sizeof(*pret)); | |
c9c2877d HD |
1040 | } |
1041 | spin_unlock_irqrestore(&pdc_lock, flags); | |
1042 | ||
8a5aa00e HD |
1043 | #ifdef CONFIG_64BIT |
1044 | /* | |
1045 | * 64-bit kernels should not call this PDT function in narrow mode. | |
1046 | * The pdt_entries_ptr array above will now contain 32-bit values | |
1047 | */ | |
1048 | if (WARN_ON_ONCE((retval == PDC_OK) && parisc_narrow_firmware)) | |
1049 | return PDC_ERROR; | |
1050 | #endif | |
1051 | ||
c9c2877d HD |
1052 | return retval; |
1053 | } | |
1054 | ||
1da177e4 LT |
1055 | /** |
1056 | * pdc_tod_set - Set the Time-Of-Day clock. | |
1057 | * @sec: The number of seconds since epoch. | |
1058 | * @usec: The number of micro seconds. | |
1059 | * | |
1060 | * Set the Time-Of-Day clock. | |
1061 | */ | |
1062 | int pdc_tod_set(unsigned long sec, unsigned long usec) | |
1063 | { | |
1064 | int retval; | |
09690b18 | 1065 | unsigned long flags; |
1da177e4 | 1066 | |
09690b18 | 1067 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 | 1068 | retval = mem_pdc_call(PDC_TOD, PDC_TOD_WRITE, sec, usec); |
09690b18 | 1069 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1070 | |
1071 | return retval; | |
1072 | } | |
1073 | EXPORT_SYMBOL(pdc_tod_set); | |
1074 | ||
a8f44e38 | 1075 | #ifdef CONFIG_64BIT |
1da177e4 LT |
1076 | int pdc_mem_mem_table(struct pdc_memory_table_raddr *r_addr, |
1077 | struct pdc_memory_table *tbl, unsigned long entries) | |
1078 | { | |
1079 | int retval; | |
09690b18 | 1080 | unsigned long flags; |
1da177e4 | 1081 | |
09690b18 | 1082 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1083 | retval = mem_pdc_call(PDC_MEM, PDC_MEM_TABLE, __pa(pdc_result), __pa(pdc_result2), entries); |
1084 | convert_to_wide(pdc_result); | |
1085 | memcpy(r_addr, pdc_result, sizeof(*r_addr)); | |
1086 | memcpy(tbl, pdc_result2, entries * sizeof(*tbl)); | |
09690b18 | 1087 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1088 | |
1089 | return retval; | |
1090 | } | |
a8f44e38 | 1091 | #endif /* CONFIG_64BIT */ |
1da177e4 LT |
1092 | |
1093 | /* FIXME: Is this pdc used? I could not find type reference to ftc_bitmap | |
1094 | * so I guessed at unsigned long. Someone who knows what this does, can fix | |
1095 | * it later. :) | |
1096 | */ | |
1097 | int pdc_do_firm_test_reset(unsigned long ftc_bitmap) | |
1098 | { | |
1099 | int retval; | |
09690b18 | 1100 | unsigned long flags; |
1da177e4 | 1101 | |
09690b18 | 1102 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1103 | retval = mem_pdc_call(PDC_BROADCAST_RESET, PDC_DO_FIRM_TEST_RESET, |
1104 | PDC_FIRM_TEST_MAGIC, ftc_bitmap); | |
09690b18 | 1105 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1106 | |
1107 | return retval; | |
1108 | } | |
1109 | ||
1110 | /* | |
1111 | * pdc_do_reset - Reset the system. | |
1112 | * | |
1113 | * Reset the system. | |
1114 | */ | |
1115 | int pdc_do_reset(void) | |
1116 | { | |
1117 | int retval; | |
09690b18 | 1118 | unsigned long flags; |
1da177e4 | 1119 | |
09690b18 | 1120 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 | 1121 | retval = mem_pdc_call(PDC_BROADCAST_RESET, PDC_DO_RESET); |
09690b18 | 1122 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1123 | |
1124 | return retval; | |
1125 | } | |
1126 | ||
1127 | /* | |
1128 | * pdc_soft_power_info - Enable soft power switch. | |
1129 | * @power_reg: address of soft power register | |
1130 | * | |
1131 | * Return the absolute address of the soft power switch register | |
1132 | */ | |
1133 | int __init pdc_soft_power_info(unsigned long *power_reg) | |
1134 | { | |
1135 | int retval; | |
09690b18 | 1136 | unsigned long flags; |
1da177e4 LT |
1137 | |
1138 | *power_reg = (unsigned long) (-1); | |
1139 | ||
09690b18 | 1140 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1141 | retval = mem_pdc_call(PDC_SOFT_POWER, PDC_SOFT_POWER_INFO, __pa(pdc_result), 0); |
1142 | if (retval == PDC_OK) { | |
1143 | convert_to_wide(pdc_result); | |
1144 | *power_reg = f_extend(pdc_result[0]); | |
1145 | } | |
09690b18 | 1146 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1147 | |
1148 | return retval; | |
1149 | } | |
1150 | ||
1151 | /* | |
1152 | * pdc_soft_power_button - Control the soft power button behaviour | |
1153 | * @sw_control: 0 for hardware control, 1 for software control | |
1154 | * | |
1155 | * | |
1156 | * This PDC function places the soft power button under software or | |
1157 | * hardware control. | |
1158 | * Under software control the OS may control to when to allow to shut | |
1159 | * down the system. Under hardware control pressing the power button | |
1160 | * powers off the system immediately. | |
1161 | */ | |
1162 | int pdc_soft_power_button(int sw_control) | |
1163 | { | |
1164 | int retval; | |
09690b18 KM |
1165 | unsigned long flags; |
1166 | ||
1167 | spin_lock_irqsave(&pdc_lock, flags); | |
1da177e4 | 1168 | retval = mem_pdc_call(PDC_SOFT_POWER, PDC_SOFT_POWER_ENABLE, __pa(pdc_result), sw_control); |
09690b18 KM |
1169 | spin_unlock_irqrestore(&pdc_lock, flags); |
1170 | ||
1da177e4 LT |
1171 | return retval; |
1172 | } | |
1173 | ||
1174 | /* | |
1175 | * pdc_io_reset - Hack to avoid overlapping range registers of Bridges devices. | |
1176 | * Primarily a problem on T600 (which parisc-linux doesn't support) but | |
1177 | * who knows what other platform firmware might do with this OS "hook". | |
1178 | */ | |
1179 | void pdc_io_reset(void) | |
1180 | { | |
09690b18 KM |
1181 | unsigned long flags; |
1182 | ||
1183 | spin_lock_irqsave(&pdc_lock, flags); | |
1da177e4 | 1184 | mem_pdc_call(PDC_IO, PDC_IO_RESET, 0); |
09690b18 | 1185 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1186 | } |
1187 | ||
1188 | /* | |
1189 | * pdc_io_reset_devices - Hack to Stop USB controller | |
1190 | * | |
1191 | * If PDC used the usb controller, the usb controller | |
1192 | * is still running and will crash the machines during iommu | |
1193 | * setup, because of still running DMA. This PDC call | |
1194 | * stops the USB controller. | |
1195 | * Normally called after calling pdc_io_reset(). | |
1196 | */ | |
1197 | void pdc_io_reset_devices(void) | |
1198 | { | |
09690b18 KM |
1199 | unsigned long flags; |
1200 | ||
1201 | spin_lock_irqsave(&pdc_lock, flags); | |
1da177e4 | 1202 | mem_pdc_call(PDC_IO, PDC_IO_RESET_DEVICES, 0); |
09690b18 | 1203 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1204 | } |
1205 | ||
f5213b2c HD |
1206 | #endif /* defined(BOOTLOADER) */ |
1207 | ||
ef1afd4d KM |
1208 | /* locked by pdc_console_lock */ |
1209 | static int __attribute__((aligned(8))) iodc_retbuf[32]; | |
1210 | static char __attribute__((aligned(64))) iodc_dbuf[4096]; | |
1da177e4 LT |
1211 | |
1212 | /** | |
721fdf34 KM |
1213 | * pdc_iodc_print - Console print using IODC. |
1214 | * @str: the string to output. | |
1215 | * @count: length of str | |
1da177e4 LT |
1216 | * |
1217 | * Note that only these special chars are architected for console IODC io: | |
1218 | * BEL, BS, CR, and LF. Others are passed through. | |
1219 | * Since the HP console requires CR+LF to perform a 'newline', we translate | |
1220 | * "\n" to "\r\n". | |
1221 | */ | |
ef1afd4d | 1222 | int pdc_iodc_print(const unsigned char *str, unsigned count) |
1da177e4 | 1223 | { |
721fdf34 | 1224 | unsigned int i; |
c53421b1 | 1225 | unsigned long flags; |
1da177e4 | 1226 | |
fbea6684 | 1227 | for (i = 0; i < count;) { |
721fdf34 KM |
1228 | switch(str[i]) { |
1229 | case '\n': | |
1230 | iodc_dbuf[i+0] = '\r'; | |
1231 | iodc_dbuf[i+1] = '\n'; | |
1232 | i += 2; | |
ef1afd4d | 1233 | goto print; |
721fdf34 KM |
1234 | default: |
1235 | iodc_dbuf[i] = str[i]; | |
d9b68e5e | 1236 | i++; |
721fdf34 KM |
1237 | break; |
1238 | } | |
1239 | } | |
1da177e4 | 1240 | |
ef1afd4d | 1241 | print: |
1da177e4 LT |
1242 | spin_lock_irqsave(&pdc_lock, flags); |
1243 | real32_call(PAGE0->mem_cons.iodc_io, | |
1244 | (unsigned long)PAGE0->mem_cons.hpa, ENTRY_IO_COUT, | |
1245 | PAGE0->mem_cons.spa, __pa(PAGE0->mem_cons.dp.layers), | |
721fdf34 | 1246 | __pa(iodc_retbuf), 0, __pa(iodc_dbuf), i, 0); |
1da177e4 | 1247 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 | 1248 | |
721fdf34 | 1249 | return i; |
1da177e4 LT |
1250 | } |
1251 | ||
f5213b2c | 1252 | #if !defined(BOOTLOADER) |
1da177e4 LT |
1253 | /** |
1254 | * pdc_iodc_getc - Read a character (non-blocking) from the PDC console. | |
1255 | * | |
1256 | * Read a character (non-blocking) from the PDC console, returns -1 if | |
1257 | * key is not present. | |
1258 | */ | |
1259 | int pdc_iodc_getc(void) | |
1260 | { | |
1da177e4 LT |
1261 | int ch; |
1262 | int status; | |
ef1afd4d | 1263 | unsigned long flags; |
1da177e4 LT |
1264 | |
1265 | /* Bail if no console input device. */ | |
1266 | if (!PAGE0->mem_kbd.iodc_io) | |
1267 | return 0; | |
1268 | ||
1269 | /* wait for a keyboard (rs232)-input */ | |
1270 | spin_lock_irqsave(&pdc_lock, flags); | |
1271 | real32_call(PAGE0->mem_kbd.iodc_io, | |
1272 | (unsigned long)PAGE0->mem_kbd.hpa, ENTRY_IO_CIN, | |
1273 | PAGE0->mem_kbd.spa, __pa(PAGE0->mem_kbd.dp.layers), | |
1274 | __pa(iodc_retbuf), 0, __pa(iodc_dbuf), 1, 0); | |
1275 | ||
1276 | ch = *iodc_dbuf; | |
1277 | status = *iodc_retbuf; | |
1278 | spin_unlock_irqrestore(&pdc_lock, flags); | |
1279 | ||
1280 | if (status == 0) | |
1281 | return -1; | |
1282 | ||
1283 | return ch; | |
1284 | } | |
1285 | ||
1286 | int pdc_sti_call(unsigned long func, unsigned long flags, | |
1287 | unsigned long inptr, unsigned long outputr, | |
1288 | unsigned long glob_cfg) | |
1289 | { | |
1290 | int retval; | |
09690b18 | 1291 | unsigned long irqflags; |
1da177e4 | 1292 | |
09690b18 | 1293 | spin_lock_irqsave(&pdc_lock, irqflags); |
1da177e4 | 1294 | retval = real32_call(func, flags, inptr, outputr, glob_cfg); |
09690b18 | 1295 | spin_unlock_irqrestore(&pdc_lock, irqflags); |
1da177e4 LT |
1296 | |
1297 | return retval; | |
1298 | } | |
1299 | EXPORT_SYMBOL(pdc_sti_call); | |
1300 | ||
a8f44e38 | 1301 | #ifdef CONFIG_64BIT |
1da177e4 LT |
1302 | /** |
1303 | * pdc_pat_cell_get_number - Returns the cell number. | |
1304 | * @cell_info: The return buffer. | |
1305 | * | |
1306 | * This PDC call returns the cell number of the cell from which the call | |
1307 | * is made. | |
1308 | */ | |
1309 | int pdc_pat_cell_get_number(struct pdc_pat_cell_num *cell_info) | |
1310 | { | |
1311 | int retval; | |
09690b18 | 1312 | unsigned long flags; |
1da177e4 | 1313 | |
09690b18 | 1314 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1315 | retval = mem_pdc_call(PDC_PAT_CELL, PDC_PAT_CELL_GET_NUMBER, __pa(pdc_result)); |
1316 | memcpy(cell_info, pdc_result, sizeof(*cell_info)); | |
09690b18 | 1317 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1318 | |
1319 | return retval; | |
1320 | } | |
1321 | ||
1322 | /** | |
1323 | * pdc_pat_cell_module - Retrieve the cell's module information. | |
1324 | * @actcnt: The number of bytes written to mem_addr. | |
1325 | * @ploc: The physical location. | |
1326 | * @mod: The module index. | |
1327 | * @view_type: The view of the address type. | |
1328 | * @mem_addr: The return buffer. | |
1329 | * | |
1330 | * This PDC call returns information about each module attached to the cell | |
1331 | * at the specified location. | |
1332 | */ | |
1333 | int pdc_pat_cell_module(unsigned long *actcnt, unsigned long ploc, unsigned long mod, | |
1334 | unsigned long view_type, void *mem_addr) | |
1335 | { | |
1336 | int retval; | |
09690b18 | 1337 | unsigned long flags; |
1da177e4 LT |
1338 | static struct pdc_pat_cell_mod_maddr_block result __attribute__ ((aligned (8))); |
1339 | ||
09690b18 | 1340 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1341 | retval = mem_pdc_call(PDC_PAT_CELL, PDC_PAT_CELL_MODULE, __pa(pdc_result), |
1342 | ploc, mod, view_type, __pa(&result)); | |
1343 | if(!retval) { | |
1344 | *actcnt = pdc_result[0]; | |
1345 | memcpy(mem_addr, &result, *actcnt); | |
1346 | } | |
09690b18 | 1347 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1348 | |
1349 | return retval; | |
1350 | } | |
1351 | ||
fe8376db HD |
1352 | /** |
1353 | * pdc_pat_cell_info - Retrieve the cell's information. | |
1354 | * @info: The pointer to a struct pdc_pat_cell_info_rtn_block. | |
1355 | * @actcnt: The number of bytes which should be written to info. | |
1356 | * @offset: offset of the structure. | |
1357 | * @cell_number: The cell number which should be asked, or -1 for current cell. | |
1358 | * | |
1359 | * This PDC call returns information about the given cell (or all cells). | |
1360 | */ | |
1361 | int pdc_pat_cell_info(struct pdc_pat_cell_info_rtn_block *info, | |
1362 | unsigned long *actcnt, unsigned long offset, | |
1363 | unsigned long cell_number) | |
1364 | { | |
1365 | int retval; | |
1366 | unsigned long flags; | |
1367 | struct pdc_pat_cell_info_rtn_block result; | |
1368 | ||
1369 | spin_lock_irqsave(&pdc_lock, flags); | |
1370 | retval = mem_pdc_call(PDC_PAT_CELL, PDC_PAT_CELL_GET_INFO, | |
1371 | __pa(pdc_result), __pa(&result), *actcnt, | |
1372 | offset, cell_number); | |
1373 | if (!retval) { | |
1374 | *actcnt = pdc_result[0]; | |
1375 | memcpy(info, &result, *actcnt); | |
1376 | } | |
1377 | spin_unlock_irqrestore(&pdc_lock, flags); | |
1378 | ||
1379 | return retval; | |
1380 | } | |
1381 | ||
1da177e4 LT |
1382 | /** |
1383 | * pdc_pat_cpu_get_number - Retrieve the cpu number. | |
1384 | * @cpu_info: The return buffer. | |
1385 | * @hpa: The Hard Physical Address of the CPU. | |
1386 | * | |
1387 | * Retrieve the cpu number for the cpu at the specified HPA. | |
1388 | */ | |
637250cc | 1389 | int pdc_pat_cpu_get_number(struct pdc_pat_cpu_num *cpu_info, unsigned long hpa) |
1da177e4 LT |
1390 | { |
1391 | int retval; | |
09690b18 | 1392 | unsigned long flags; |
1da177e4 | 1393 | |
09690b18 | 1394 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1395 | retval = mem_pdc_call(PDC_PAT_CPU, PDC_PAT_CPU_GET_NUMBER, |
1396 | __pa(&pdc_result), hpa); | |
1397 | memcpy(cpu_info, pdc_result, sizeof(*cpu_info)); | |
09690b18 | 1398 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1399 | |
1400 | return retval; | |
1401 | } | |
1402 | ||
1403 | /** | |
1404 | * pdc_pat_get_irt_size - Retrieve the number of entries in the cell's interrupt table. | |
1405 | * @num_entries: The return value. | |
1406 | * @cell_num: The target cell. | |
1407 | * | |
1408 | * This PDC function returns the number of entries in the specified cell's | |
1409 | * interrupt table. | |
1410 | */ | |
1411 | int pdc_pat_get_irt_size(unsigned long *num_entries, unsigned long cell_num) | |
1412 | { | |
1413 | int retval; | |
09690b18 | 1414 | unsigned long flags; |
1da177e4 | 1415 | |
09690b18 | 1416 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1417 | retval = mem_pdc_call(PDC_PAT_IO, PDC_PAT_IO_GET_PCI_ROUTING_TABLE_SIZE, |
1418 | __pa(pdc_result), cell_num); | |
1419 | *num_entries = pdc_result[0]; | |
09690b18 | 1420 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1421 | |
1422 | return retval; | |
1423 | } | |
1424 | ||
1425 | /** | |
1426 | * pdc_pat_get_irt - Retrieve the cell's interrupt table. | |
1427 | * @r_addr: The return buffer. | |
1428 | * @cell_num: The target cell. | |
1429 | * | |
1430 | * This PDC function returns the actual interrupt table for the specified cell. | |
1431 | */ | |
1432 | int pdc_pat_get_irt(void *r_addr, unsigned long cell_num) | |
1433 | { | |
1434 | int retval; | |
09690b18 | 1435 | unsigned long flags; |
1da177e4 | 1436 | |
09690b18 | 1437 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1438 | retval = mem_pdc_call(PDC_PAT_IO, PDC_PAT_IO_GET_PCI_ROUTING_TABLE, |
1439 | __pa(r_addr), cell_num); | |
09690b18 | 1440 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1441 | |
1442 | return retval; | |
1443 | } | |
1444 | ||
1445 | /** | |
1446 | * pdc_pat_pd_get_addr_map - Retrieve information about memory address ranges. | |
1447 | * @actlen: The return buffer. | |
1448 | * @mem_addr: Pointer to the memory buffer. | |
1449 | * @count: The number of bytes to read from the buffer. | |
1450 | * @offset: The offset with respect to the beginning of the buffer. | |
1451 | * | |
1452 | */ | |
1453 | int pdc_pat_pd_get_addr_map(unsigned long *actual_len, void *mem_addr, | |
1454 | unsigned long count, unsigned long offset) | |
1455 | { | |
1456 | int retval; | |
09690b18 | 1457 | unsigned long flags; |
1da177e4 | 1458 | |
09690b18 | 1459 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1460 | retval = mem_pdc_call(PDC_PAT_PD, PDC_PAT_PD_GET_ADDR_MAP, __pa(pdc_result), |
1461 | __pa(pdc_result2), count, offset); | |
1462 | *actual_len = pdc_result[0]; | |
1463 | memcpy(mem_addr, pdc_result2, *actual_len); | |
09690b18 | 1464 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1465 | |
1466 | return retval; | |
1467 | } | |
1468 | ||
fe8376db HD |
1469 | /** |
1470 | * pdc_pat_pd_get_PDC_interface_revisions - Retrieve PDC interface revisions. | |
1471 | * @legacy_rev: The legacy revision. | |
1472 | * @pat_rev: The PAT revision. | |
1473 | * @pdc_cap: The PDC capabilities. | |
1474 | * | |
1475 | */ | |
1476 | int pdc_pat_pd_get_pdc_revisions(unsigned long *legacy_rev, | |
1477 | unsigned long *pat_rev, unsigned long *pdc_cap) | |
1478 | { | |
1479 | int retval; | |
1480 | unsigned long flags; | |
1481 | ||
1482 | spin_lock_irqsave(&pdc_lock, flags); | |
1483 | retval = mem_pdc_call(PDC_PAT_PD, PDC_PAT_PD_GET_PDC_INTERF_REV, | |
1484 | __pa(pdc_result)); | |
1485 | if (retval == PDC_OK) { | |
1486 | *legacy_rev = pdc_result[0]; | |
1487 | *pat_rev = pdc_result[1]; | |
1488 | *pdc_cap = pdc_result[2]; | |
1489 | } | |
1490 | spin_unlock_irqrestore(&pdc_lock, flags); | |
1491 | ||
1492 | return retval; | |
1493 | } | |
1494 | ||
1495 | ||
1da177e4 LT |
1496 | /** |
1497 | * pdc_pat_io_pci_cfg_read - Read PCI configuration space. | |
1498 | * @pci_addr: PCI configuration space address for which the read request is being made. | |
1499 | * @pci_size: Size of read in bytes. Valid values are 1, 2, and 4. | |
1500 | * @mem_addr: Pointer to return memory buffer. | |
1501 | * | |
1502 | */ | |
1503 | int pdc_pat_io_pci_cfg_read(unsigned long pci_addr, int pci_size, u32 *mem_addr) | |
1504 | { | |
1505 | int retval; | |
09690b18 KM |
1506 | unsigned long flags; |
1507 | ||
1508 | spin_lock_irqsave(&pdc_lock, flags); | |
1da177e4 LT |
1509 | retval = mem_pdc_call(PDC_PAT_IO, PDC_PAT_IO_PCI_CONFIG_READ, |
1510 | __pa(pdc_result), pci_addr, pci_size); | |
1511 | switch(pci_size) { | |
49ea1480 HD |
1512 | case 1: *(u8 *) mem_addr = (u8) pdc_result[0]; break; |
1513 | case 2: *(u16 *)mem_addr = (u16) pdc_result[0]; break; | |
1514 | case 4: *(u32 *)mem_addr = (u32) pdc_result[0]; break; | |
1da177e4 | 1515 | } |
09690b18 | 1516 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1517 | |
1518 | return retval; | |
1519 | } | |
1520 | ||
1521 | /** | |
1522 | * pdc_pat_io_pci_cfg_write - Retrieve information about memory address ranges. | |
1523 | * @pci_addr: PCI configuration space address for which the write request is being made. | |
1524 | * @pci_size: Size of write in bytes. Valid values are 1, 2, and 4. | |
1525 | * @value: Pointer to 1, 2, or 4 byte value in low order end of argument to be | |
1526 | * written to PCI Config space. | |
1527 | * | |
1528 | */ | |
1529 | int pdc_pat_io_pci_cfg_write(unsigned long pci_addr, int pci_size, u32 val) | |
1530 | { | |
1531 | int retval; | |
09690b18 | 1532 | unsigned long flags; |
1da177e4 | 1533 | |
09690b18 | 1534 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1535 | retval = mem_pdc_call(PDC_PAT_IO, PDC_PAT_IO_PCI_CONFIG_WRITE, |
1536 | pci_addr, pci_size, val); | |
09690b18 | 1537 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1538 | |
1539 | return retval; | |
1540 | } | |
c9c2877d HD |
1541 | |
1542 | /** | |
1543 | * pdc_pat_mem_pdc_info - Retrieve information about page deallocation table | |
1544 | * @rinfo: memory pdt information | |
1545 | * | |
1546 | */ | |
1547 | int pdc_pat_mem_pdt_info(struct pdc_pat_mem_retinfo *rinfo) | |
1548 | { | |
1549 | int retval; | |
1550 | unsigned long flags; | |
1551 | ||
1552 | spin_lock_irqsave(&pdc_lock, flags); | |
1553 | retval = mem_pdc_call(PDC_PAT_MEM, PDC_PAT_MEM_PD_INFO, | |
1554 | __pa(&pdc_result)); | |
1555 | if (retval == PDC_OK) | |
1556 | memcpy(rinfo, &pdc_result, sizeof(*rinfo)); | |
1557 | spin_unlock_irqrestore(&pdc_lock, flags); | |
1558 | ||
1559 | return retval; | |
1560 | } | |
1561 | ||
8a5aa00e HD |
1562 | /** |
1563 | * pdc_pat_mem_pdt_cell_info - Retrieve information about page deallocation | |
1564 | * table of a cell | |
1565 | * @rinfo: memory pdt information | |
1566 | * @cell: cell number | |
1567 | * | |
1568 | */ | |
1569 | int pdc_pat_mem_pdt_cell_info(struct pdc_pat_mem_cell_pdt_retinfo *rinfo, | |
1570 | unsigned long cell) | |
1571 | { | |
1572 | int retval; | |
1573 | unsigned long flags; | |
1574 | ||
1575 | spin_lock_irqsave(&pdc_lock, flags); | |
1576 | retval = mem_pdc_call(PDC_PAT_MEM, PDC_PAT_MEM_CELL_INFO, | |
1577 | __pa(&pdc_result), cell); | |
1578 | if (retval == PDC_OK) | |
1579 | memcpy(rinfo, &pdc_result, sizeof(*rinfo)); | |
1580 | spin_unlock_irqrestore(&pdc_lock, flags); | |
1581 | ||
1582 | return retval; | |
1583 | } | |
1584 | ||
c9c2877d HD |
1585 | /** |
1586 | * pdc_pat_mem_read_cell_pdt - Read PDT entries from (old) PAT firmware | |
1587 | * @pret: array of PDT entries | |
1588 | * @pdt_entries_ptr: ptr to hold number of PDT entries | |
1589 | * @max_entries: maximum number of entries to be read | |
1590 | * | |
1591 | */ | |
1592 | int pdc_pat_mem_read_cell_pdt(struct pdc_pat_mem_read_pd_retinfo *pret, | |
1593 | unsigned long *pdt_entries_ptr, unsigned long max_entries) | |
1594 | { | |
1595 | int retval; | |
1596 | unsigned long flags, entries; | |
1597 | ||
1598 | spin_lock_irqsave(&pdc_lock, flags); | |
1599 | /* PDC_PAT_MEM_CELL_READ is available on early PAT machines only */ | |
1600 | retval = mem_pdc_call(PDC_PAT_MEM, PDC_PAT_MEM_CELL_READ, | |
8a5aa00e HD |
1601 | __pa(&pdc_result), parisc_cell_num, |
1602 | __pa(pdt_entries_ptr)); | |
c9c2877d HD |
1603 | |
1604 | if (retval == PDC_OK) { | |
1605 | /* build up return value as for PDC_PAT_MEM_PD_READ */ | |
1606 | entries = min(pdc_result[0], max_entries); | |
1607 | pret->pdt_entries = entries; | |
1608 | pret->actual_count_bytes = entries * sizeof(unsigned long); | |
c9c2877d HD |
1609 | } |
1610 | ||
1611 | spin_unlock_irqrestore(&pdc_lock, flags); | |
1612 | WARN_ON(retval == PDC_OK && pdc_result[0] > max_entries); | |
1613 | ||
1614 | return retval; | |
1615 | } | |
1616 | /** | |
1617 | * pdc_pat_mem_read_pd_pdt - Read PDT entries from (newer) PAT firmware | |
1618 | * @pret: array of PDT entries | |
1619 | * @pdt_entries_ptr: ptr to hold number of PDT entries | |
8a5aa00e HD |
1620 | * @count: number of bytes to read |
1621 | * @offset: offset to start (in bytes) | |
c9c2877d HD |
1622 | * |
1623 | */ | |
1624 | int pdc_pat_mem_read_pd_pdt(struct pdc_pat_mem_read_pd_retinfo *pret, | |
1625 | unsigned long *pdt_entries_ptr, unsigned long count, | |
1626 | unsigned long offset) | |
1627 | { | |
1628 | int retval; | |
f520e552 | 1629 | unsigned long flags, entries; |
c9c2877d HD |
1630 | |
1631 | spin_lock_irqsave(&pdc_lock, flags); | |
1632 | retval = mem_pdc_call(PDC_PAT_MEM, PDC_PAT_MEM_PD_READ, | |
f520e552 | 1633 | __pa(&pdc_result), __pa(pdt_entries_ptr), |
c9c2877d | 1634 | count, offset); |
f520e552 HD |
1635 | |
1636 | if (retval == PDC_OK) { | |
1637 | entries = min(pdc_result[0], count); | |
1638 | pret->actual_count_bytes = entries; | |
1639 | pret->pdt_entries = entries / sizeof(unsigned long); | |
1640 | } | |
1641 | ||
c9c2877d HD |
1642 | spin_unlock_irqrestore(&pdc_lock, flags); |
1643 | ||
1644 | return retval; | |
1645 | } | |
25a9b765 HD |
1646 | |
1647 | /** | |
1648 | * pdc_pat_mem_get_dimm_phys_location - Get physical DIMM slot via PAT firmware | |
1649 | * @pret: ptr to hold returned information | |
1650 | * @phys_addr: physical address to examine | |
1651 | * | |
1652 | */ | |
1653 | int pdc_pat_mem_get_dimm_phys_location( | |
1654 | struct pdc_pat_mem_phys_mem_location *pret, | |
1655 | unsigned long phys_addr) | |
1656 | { | |
1657 | int retval; | |
1658 | unsigned long flags; | |
1659 | ||
1660 | spin_lock_irqsave(&pdc_lock, flags); | |
1661 | retval = mem_pdc_call(PDC_PAT_MEM, PDC_PAT_MEM_ADDRESS, | |
1662 | __pa(&pdc_result), phys_addr); | |
1663 | ||
1664 | if (retval == PDC_OK) | |
1665 | memcpy(pret, &pdc_result, sizeof(*pret)); | |
1666 | ||
1667 | spin_unlock_irqrestore(&pdc_lock, flags); | |
1668 | ||
1669 | return retval; | |
1670 | } | |
a8f44e38 | 1671 | #endif /* CONFIG_64BIT */ |
f5213b2c | 1672 | #endif /* defined(BOOTLOADER) */ |
1da177e4 LT |
1673 | |
1674 | ||
1675 | /***************** 32-bit real-mode calls ***********/ | |
1676 | /* The struct below is used | |
1677 | * to overlay real_stack (real2.S), preparing a 32-bit call frame. | |
1678 | * real32_call_asm() then uses this stack in narrow real mode | |
1679 | */ | |
1680 | ||
1681 | struct narrow_stack { | |
1682 | /* use int, not long which is 64 bits */ | |
1683 | unsigned int arg13; | |
1684 | unsigned int arg12; | |
1685 | unsigned int arg11; | |
1686 | unsigned int arg10; | |
1687 | unsigned int arg9; | |
1688 | unsigned int arg8; | |
1689 | unsigned int arg7; | |
1690 | unsigned int arg6; | |
1691 | unsigned int arg5; | |
1692 | unsigned int arg4; | |
1693 | unsigned int arg3; | |
1694 | unsigned int arg2; | |
1695 | unsigned int arg1; | |
1696 | unsigned int arg0; | |
1697 | unsigned int frame_marker[8]; | |
1698 | unsigned int sp; | |
1699 | /* in reality, there's nearly 8k of stack after this */ | |
1700 | }; | |
1701 | ||
1702 | long real32_call(unsigned long fn, ...) | |
1703 | { | |
1704 | va_list args; | |
1705 | extern struct narrow_stack real_stack; | |
1706 | extern unsigned long real32_call_asm(unsigned int *, | |
1707 | unsigned int *, | |
1708 | unsigned int); | |
1709 | ||
1710 | va_start(args, fn); | |
1711 | real_stack.arg0 = va_arg(args, unsigned int); | |
1712 | real_stack.arg1 = va_arg(args, unsigned int); | |
1713 | real_stack.arg2 = va_arg(args, unsigned int); | |
1714 | real_stack.arg3 = va_arg(args, unsigned int); | |
1715 | real_stack.arg4 = va_arg(args, unsigned int); | |
1716 | real_stack.arg5 = va_arg(args, unsigned int); | |
1717 | real_stack.arg6 = va_arg(args, unsigned int); | |
1718 | real_stack.arg7 = va_arg(args, unsigned int); | |
1719 | real_stack.arg8 = va_arg(args, unsigned int); | |
1720 | real_stack.arg9 = va_arg(args, unsigned int); | |
1721 | real_stack.arg10 = va_arg(args, unsigned int); | |
1722 | real_stack.arg11 = va_arg(args, unsigned int); | |
1723 | real_stack.arg12 = va_arg(args, unsigned int); | |
1724 | real_stack.arg13 = va_arg(args, unsigned int); | |
1725 | va_end(args); | |
1726 | ||
1727 | return real32_call_asm(&real_stack.sp, &real_stack.arg0, fn); | |
1728 | } | |
1729 | ||
a8f44e38 | 1730 | #ifdef CONFIG_64BIT |
1da177e4 LT |
1731 | /***************** 64-bit real-mode calls ***********/ |
1732 | ||
1733 | struct wide_stack { | |
1734 | unsigned long arg0; | |
1735 | unsigned long arg1; | |
1736 | unsigned long arg2; | |
1737 | unsigned long arg3; | |
1738 | unsigned long arg4; | |
1739 | unsigned long arg5; | |
1740 | unsigned long arg6; | |
1741 | unsigned long arg7; | |
1742 | unsigned long arg8; | |
1743 | unsigned long arg9; | |
1744 | unsigned long arg10; | |
1745 | unsigned long arg11; | |
1746 | unsigned long arg12; | |
1747 | unsigned long arg13; | |
1748 | unsigned long frame_marker[2]; /* rp, previous sp */ | |
1749 | unsigned long sp; | |
1750 | /* in reality, there's nearly 8k of stack after this */ | |
1751 | }; | |
1752 | ||
1753 | long real64_call(unsigned long fn, ...) | |
1754 | { | |
1755 | va_list args; | |
1756 | extern struct wide_stack real64_stack; | |
1757 | extern unsigned long real64_call_asm(unsigned long *, | |
1758 | unsigned long *, | |
1759 | unsigned long); | |
1760 | ||
1761 | va_start(args, fn); | |
1762 | real64_stack.arg0 = va_arg(args, unsigned long); | |
1763 | real64_stack.arg1 = va_arg(args, unsigned long); | |
1764 | real64_stack.arg2 = va_arg(args, unsigned long); | |
1765 | real64_stack.arg3 = va_arg(args, unsigned long); | |
1766 | real64_stack.arg4 = va_arg(args, unsigned long); | |
1767 | real64_stack.arg5 = va_arg(args, unsigned long); | |
1768 | real64_stack.arg6 = va_arg(args, unsigned long); | |
1769 | real64_stack.arg7 = va_arg(args, unsigned long); | |
1770 | real64_stack.arg8 = va_arg(args, unsigned long); | |
1771 | real64_stack.arg9 = va_arg(args, unsigned long); | |
1772 | real64_stack.arg10 = va_arg(args, unsigned long); | |
1773 | real64_stack.arg11 = va_arg(args, unsigned long); | |
1774 | real64_stack.arg12 = va_arg(args, unsigned long); | |
1775 | real64_stack.arg13 = va_arg(args, unsigned long); | |
1776 | va_end(args); | |
1777 | ||
1778 | return real64_call_asm(&real64_stack.sp, &real64_stack.arg0, fn); | |
1779 | } | |
1780 | ||
a8f44e38 | 1781 | #endif /* CONFIG_64BIT */ |