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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * arch/parisc/kernel/firmware.c - safe PDC access routines | |
4 | * | |
5 | * PDC == Processor Dependent Code | |
6 | * | |
7 | * See http://www.parisc-linux.org/documentation/index.html | |
8 | * for documentation describing the entry points and calling | |
9 | * conventions defined below. | |
10 | * | |
11 | * Copyright 1999 SuSE GmbH Nuernberg (Philipp Rumpf, prumpf@tux.org) | |
12 | * Copyright 1999 The Puffin Group, (Alex deVries, David Kennedy) | |
13 | * Copyright 2003 Grant Grundler <grundler parisc-linux org> | |
14 | * Copyright 2003,2004 Ryan Bradetich <rbrad@parisc-linux.org> | |
8ffaeaf4 | 15 | * Copyright 2004,2006 Thibaut VARENE <varenet@parisc-linux.org> |
1da177e4 LT |
16 | */ |
17 | ||
18 | /* I think it would be in everyone's best interest to follow this | |
19 | * guidelines when writing PDC wrappers: | |
20 | * | |
21 | * - the name of the pdc wrapper should match one of the macros | |
22 | * used for the first two arguments | |
23 | * - don't use caps for random parts of the name | |
24 | * - use the static PDC result buffers and "copyout" to structs | |
25 | * supplied by the caller to encapsulate alignment restrictions | |
26 | * - hold pdc_lock while in PDC or using static result buffers | |
27 | * - use __pa() to convert virtual (kernel) pointers to physical | |
28 | * ones. | |
29 | * - the name of the struct used for pdc return values should equal | |
30 | * one of the macros used for the first two arguments to the | |
31 | * corresponding PDC call | |
32 | * - keep the order of arguments | |
33 | * - don't be smart (setting trailing NUL bytes for strings, return | |
34 | * something useful even if the call failed) unless you are sure | |
35 | * it's not going to affect functionality or performance | |
36 | * | |
37 | * Example: | |
38 | * int pdc_cache_info(struct pdc_cache_info *cache_info ) | |
39 | * { | |
40 | * int retval; | |
41 | * | |
42 | * spin_lock_irq(&pdc_lock); | |
43 | * retval = mem_pdc_call(PDC_CACHE,PDC_CACHE_INFO,__pa(cache_info),0); | |
44 | * convert_to_wide(pdc_result); | |
45 | * memcpy(cache_info, pdc_result, sizeof(*cache_info)); | |
46 | * spin_unlock_irq(&pdc_lock); | |
47 | * | |
48 | * return retval; | |
49 | * } | |
50 | * prumpf 991016 | |
51 | */ | |
52 | ||
53 | #include <stdarg.h> | |
54 | ||
55 | #include <linux/delay.h> | |
56 | #include <linux/init.h> | |
57 | #include <linux/kernel.h> | |
58 | #include <linux/module.h> | |
59 | #include <linux/string.h> | |
60 | #include <linux/spinlock.h> | |
61 | ||
62 | #include <asm/page.h> | |
63 | #include <asm/pdc.h> | |
64 | #include <asm/pdcpat.h> | |
1da177e4 LT |
65 | #include <asm/processor.h> /* for boot_cpu_data */ |
66 | ||
f5213b2c HD |
67 | #if defined(BOOTLOADER) |
68 | # undef spin_lock_irqsave | |
69 | # define spin_lock_irqsave(a, b) { b = 1; } | |
70 | # undef spin_unlock_irqrestore | |
71 | # define spin_unlock_irqrestore(a, b) | |
72 | #else | |
1da177e4 | 73 | static DEFINE_SPINLOCK(pdc_lock); |
f5213b2c HD |
74 | #endif |
75 | ||
6c86cb82 KM |
76 | extern unsigned long pdc_result[NUM_PDC_RESULT]; |
77 | extern unsigned long pdc_result2[NUM_PDC_RESULT]; | |
1da177e4 | 78 | |
a8f44e38 | 79 | #ifdef CONFIG_64BIT |
1da177e4 LT |
80 | #define WIDE_FIRMWARE 0x1 |
81 | #define NARROW_FIRMWARE 0x2 | |
82 | ||
83 | /* Firmware needs to be initially set to narrow to determine the | |
84 | * actual firmware width. */ | |
1b69085d | 85 | int parisc_narrow_firmware __ro_after_init = 1; |
1da177e4 LT |
86 | #endif |
87 | ||
675ec7a5 GG |
88 | /* On most currently-supported platforms, IODC I/O calls are 32-bit calls |
89 | * and MEM_PDC calls are always the same width as the OS. | |
90 | * Some PAT boxes may have 64-bit IODC I/O. | |
1da177e4 | 91 | * |
675ec7a5 GG |
92 | * Ryan Bradetich added the now obsolete CONFIG_PDC_NARROW to allow |
93 | * 64-bit kernels to run on systems with 32-bit MEM_PDC calls. | |
94 | * This allowed wide kernels to run on Cxxx boxes. | |
95 | * We now detect 32-bit-only PDC and dynamically switch to 32-bit mode | |
96 | * when running a 64-bit kernel on such boxes (e.g. C200 or C360). | |
1da177e4 LT |
97 | */ |
98 | ||
a8f44e38 | 99 | #ifdef CONFIG_64BIT |
1da177e4 LT |
100 | long real64_call(unsigned long function, ...); |
101 | #endif | |
102 | long real32_call(unsigned long function, ...); | |
103 | ||
a8f44e38 | 104 | #ifdef CONFIG_64BIT |
1da177e4 LT |
105 | # define MEM_PDC (unsigned long)(PAGE0->mem_pdc_hi) << 32 | PAGE0->mem_pdc |
106 | # define mem_pdc_call(args...) unlikely(parisc_narrow_firmware) ? real32_call(MEM_PDC, args) : real64_call(MEM_PDC, args) | |
107 | #else | |
108 | # define MEM_PDC (unsigned long)PAGE0->mem_pdc | |
109 | # define mem_pdc_call(args...) real32_call(MEM_PDC, args) | |
110 | #endif | |
111 | ||
112 | ||
113 | /** | |
114 | * f_extend - Convert PDC addresses to kernel addresses. | |
115 | * @address: Address returned from PDC. | |
116 | * | |
117 | * This function is used to convert PDC addresses into kernel addresses | |
118 | * when the PDC address size and kernel address size are different. | |
119 | */ | |
120 | static unsigned long f_extend(unsigned long address) | |
121 | { | |
a8f44e38 | 122 | #ifdef CONFIG_64BIT |
1da177e4 LT |
123 | if(unlikely(parisc_narrow_firmware)) { |
124 | if((address & 0xff000000) == 0xf0000000) | |
125 | return 0xf0f0f0f000000000UL | (u32)address; | |
126 | ||
127 | if((address & 0xf0000000) == 0xf0000000) | |
128 | return 0xffffffff00000000UL | (u32)address; | |
129 | } | |
130 | #endif | |
131 | return address; | |
132 | } | |
133 | ||
134 | /** | |
135 | * convert_to_wide - Convert the return buffer addresses into kernel addresses. | |
136 | * @address: The return buffer from PDC. | |
137 | * | |
138 | * This function is used to convert the return buffer addresses retrieved from PDC | |
139 | * into kernel addresses when the PDC address size and kernel address size are | |
140 | * different. | |
141 | */ | |
142 | static void convert_to_wide(unsigned long *addr) | |
143 | { | |
a8f44e38 | 144 | #ifdef CONFIG_64BIT |
1da177e4 LT |
145 | int i; |
146 | unsigned int *p = (unsigned int *)addr; | |
147 | ||
8a5aa00e HD |
148 | if (unlikely(parisc_narrow_firmware)) { |
149 | for (i = (NUM_PDC_RESULT-1); i >= 0; --i) | |
1da177e4 LT |
150 | addr[i] = p[i]; |
151 | } | |
152 | #endif | |
153 | } | |
154 | ||
24b574d0 | 155 | #ifdef CONFIG_64BIT |
60ffef06 | 156 | void set_firmware_width_unlocked(void) |
24b574d0 KM |
157 | { |
158 | int ret; | |
159 | ||
160 | ret = mem_pdc_call(PDC_MODEL, PDC_MODEL_CAPABILITIES, | |
161 | __pa(pdc_result), 0); | |
162 | convert_to_wide(pdc_result); | |
163 | if (pdc_result[0] != NARROW_FIRMWARE) | |
164 | parisc_narrow_firmware = 0; | |
165 | } | |
166 | ||
1da177e4 LT |
167 | /** |
168 | * set_firmware_width - Determine if the firmware is wide or narrow. | |
169 | * | |
24b574d0 KM |
170 | * This function must be called before any pdc_* function that uses the |
171 | * convert_to_wide function. | |
1da177e4 | 172 | */ |
60ffef06 | 173 | void set_firmware_width(void) |
1da177e4 | 174 | { |
09690b18 | 175 | unsigned long flags; |
24b574d0 KM |
176 | spin_lock_irqsave(&pdc_lock, flags); |
177 | set_firmware_width_unlocked(); | |
178 | spin_unlock_irqrestore(&pdc_lock, flags); | |
179 | } | |
180 | #else | |
60ffef06 PG |
181 | void set_firmware_width_unlocked(void) |
182 | { | |
24b574d0 KM |
183 | return; |
184 | } | |
1da177e4 | 185 | |
60ffef06 PG |
186 | void set_firmware_width(void) |
187 | { | |
24b574d0 | 188 | return; |
1da177e4 | 189 | } |
24b574d0 | 190 | #endif /*CONFIG_64BIT*/ |
1da177e4 | 191 | |
f5213b2c HD |
192 | |
193 | #if !defined(BOOTLOADER) | |
1da177e4 LT |
194 | /** |
195 | * pdc_emergency_unlock - Unlock the linux pdc lock | |
196 | * | |
197 | * This call unlocks the linux pdc lock in case we need some PDC functions | |
198 | * (like pdc_add_valid) during kernel stack dump. | |
199 | */ | |
200 | void pdc_emergency_unlock(void) | |
201 | { | |
202 | /* Spinlock DEBUG code freaks out if we unconditionally unlock */ | |
203 | if (spin_is_locked(&pdc_lock)) | |
204 | spin_unlock(&pdc_lock); | |
205 | } | |
206 | ||
207 | ||
208 | /** | |
209 | * pdc_add_valid - Verify address can be accessed without causing a HPMC. | |
210 | * @address: Address to be verified. | |
211 | * | |
212 | * This PDC call attempts to read from the specified address and verifies | |
213 | * if the address is valid. | |
214 | * | |
215 | * The return value is PDC_OK (0) in case accessing this address is valid. | |
216 | */ | |
217 | int pdc_add_valid(unsigned long address) | |
218 | { | |
219 | int retval; | |
09690b18 | 220 | unsigned long flags; |
1da177e4 | 221 | |
09690b18 | 222 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 | 223 | retval = mem_pdc_call(PDC_ADD_VALID, PDC_ADD_VALID_VERIFY, address); |
09690b18 | 224 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
225 | |
226 | return retval; | |
227 | } | |
228 | EXPORT_SYMBOL(pdc_add_valid); | |
229 | ||
77089c52 HD |
230 | /** |
231 | * pdc_instr - Get instruction that invokes PDCE_CHECK in HPMC handler. | |
232 | * @instr: Pointer to variable which will get instruction opcode. | |
233 | * | |
234 | * The return value is PDC_OK (0) in case call succeeded. | |
235 | */ | |
236 | int __init pdc_instr(unsigned int *instr) | |
237 | { | |
238 | int retval; | |
239 | unsigned long flags; | |
240 | ||
241 | spin_lock_irqsave(&pdc_lock, flags); | |
242 | retval = mem_pdc_call(PDC_INSTR, 0UL, __pa(pdc_result)); | |
243 | convert_to_wide(pdc_result); | |
244 | *instr = pdc_result[0]; | |
245 | spin_unlock_irqrestore(&pdc_lock, flags); | |
246 | ||
247 | return retval; | |
248 | } | |
249 | ||
1da177e4 LT |
250 | /** |
251 | * pdc_chassis_info - Return chassis information. | |
252 | * @result: The return buffer. | |
253 | * @chassis_info: The memory buffer address. | |
254 | * @len: The size of the memory buffer address. | |
255 | * | |
256 | * An HVERSION dependent call for returning the chassis information. | |
257 | */ | |
258 | int __init pdc_chassis_info(struct pdc_chassis_info *chassis_info, void *led_info, unsigned long len) | |
259 | { | |
260 | int retval; | |
09690b18 | 261 | unsigned long flags; |
1da177e4 | 262 | |
09690b18 | 263 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
264 | memcpy(&pdc_result, chassis_info, sizeof(*chassis_info)); |
265 | memcpy(&pdc_result2, led_info, len); | |
266 | retval = mem_pdc_call(PDC_CHASSIS, PDC_RETURN_CHASSIS_INFO, | |
267 | __pa(pdc_result), __pa(pdc_result2), len); | |
268 | memcpy(chassis_info, pdc_result, sizeof(*chassis_info)); | |
269 | memcpy(led_info, pdc_result2, len); | |
09690b18 | 270 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
271 | |
272 | return retval; | |
273 | } | |
274 | ||
275 | /** | |
276 | * pdc_pat_chassis_send_log - Sends a PDC PAT CHASSIS log message. | |
277 | * @retval: -1 on error, 0 on success. Other value are PDC errors | |
278 | * | |
279 | * Must be correctly formatted or expect system crash | |
280 | */ | |
a8f44e38 | 281 | #ifdef CONFIG_64BIT |
1da177e4 LT |
282 | int pdc_pat_chassis_send_log(unsigned long state, unsigned long data) |
283 | { | |
284 | int retval = 0; | |
09690b18 | 285 | unsigned long flags; |
1da177e4 LT |
286 | |
287 | if (!is_pdc_pat()) | |
288 | return -1; | |
289 | ||
09690b18 | 290 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 | 291 | retval = mem_pdc_call(PDC_PAT_CHASSIS_LOG, PDC_PAT_CHASSIS_WRITE_LOG, __pa(&state), __pa(&data)); |
09690b18 | 292 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
293 | |
294 | return retval; | |
295 | } | |
296 | #endif | |
297 | ||
298 | /** | |
8ffaeaf4 | 299 | * pdc_chassis_disp - Updates chassis code |
1da177e4 | 300 | * @retval: -1 on error, 0 on success |
1da177e4 LT |
301 | */ |
302 | int pdc_chassis_disp(unsigned long disp) | |
303 | { | |
304 | int retval = 0; | |
09690b18 | 305 | unsigned long flags; |
1da177e4 | 306 | |
09690b18 | 307 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 | 308 | retval = mem_pdc_call(PDC_CHASSIS, PDC_CHASSIS_DISP, disp); |
09690b18 | 309 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
310 | |
311 | return retval; | |
312 | } | |
313 | ||
8ffaeaf4 TV |
314 | /** |
315 | * pdc_chassis_warn - Fetches chassis warnings | |
316 | * @retval: -1 on error, 0 on success | |
317 | */ | |
318 | int pdc_chassis_warn(unsigned long *warn) | |
319 | { | |
320 | int retval = 0; | |
09690b18 | 321 | unsigned long flags; |
8ffaeaf4 | 322 | |
09690b18 | 323 | spin_lock_irqsave(&pdc_lock, flags); |
8ffaeaf4 TV |
324 | retval = mem_pdc_call(PDC_CHASSIS, PDC_CHASSIS_WARN, __pa(pdc_result)); |
325 | *warn = pdc_result[0]; | |
09690b18 | 326 | spin_unlock_irqrestore(&pdc_lock, flags); |
8ffaeaf4 TV |
327 | |
328 | return retval; | |
329 | } | |
330 | ||
60ffef06 | 331 | int pdc_coproc_cfg_unlocked(struct pdc_coproc_cfg *pdc_coproc_info) |
24b574d0 KM |
332 | { |
333 | int ret; | |
334 | ||
335 | ret = mem_pdc_call(PDC_COPROC, PDC_COPROC_CFG, __pa(pdc_result)); | |
336 | convert_to_wide(pdc_result); | |
337 | pdc_coproc_info->ccr_functional = pdc_result[0]; | |
338 | pdc_coproc_info->ccr_present = pdc_result[1]; | |
339 | pdc_coproc_info->revision = pdc_result[17]; | |
340 | pdc_coproc_info->model = pdc_result[18]; | |
341 | ||
342 | return ret; | |
343 | } | |
344 | ||
1da177e4 LT |
345 | /** |
346 | * pdc_coproc_cfg - To identify coprocessors attached to the processor. | |
347 | * @pdc_coproc_info: Return buffer address. | |
348 | * | |
349 | * This PDC call returns the presence and status of all the coprocessors | |
350 | * attached to the processor. | |
351 | */ | |
60ffef06 | 352 | int pdc_coproc_cfg(struct pdc_coproc_cfg *pdc_coproc_info) |
1da177e4 | 353 | { |
24b574d0 | 354 | int ret; |
09690b18 | 355 | unsigned long flags; |
1da177e4 | 356 | |
24b574d0 KM |
357 | spin_lock_irqsave(&pdc_lock, flags); |
358 | ret = pdc_coproc_cfg_unlocked(pdc_coproc_info); | |
359 | spin_unlock_irqrestore(&pdc_lock, flags); | |
1da177e4 | 360 | |
24b574d0 | 361 | return ret; |
1da177e4 LT |
362 | } |
363 | ||
364 | /** | |
365 | * pdc_iodc_read - Read data from the modules IODC. | |
366 | * @actcnt: The actual number of bytes. | |
367 | * @hpa: The HPA of the module for the iodc read. | |
368 | * @index: The iodc entry point. | |
369 | * @iodc_data: A buffer memory for the iodc options. | |
370 | * @iodc_data_size: Size of the memory buffer. | |
371 | * | |
372 | * This PDC call reads from the IODC of the module specified by the hpa | |
373 | * argument. | |
374 | */ | |
375 | int pdc_iodc_read(unsigned long *actcnt, unsigned long hpa, unsigned int index, | |
376 | void *iodc_data, unsigned int iodc_data_size) | |
377 | { | |
378 | int retval; | |
09690b18 | 379 | unsigned long flags; |
1da177e4 | 380 | |
09690b18 | 381 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
382 | retval = mem_pdc_call(PDC_IODC, PDC_IODC_READ, __pa(pdc_result), hpa, |
383 | index, __pa(pdc_result2), iodc_data_size); | |
384 | convert_to_wide(pdc_result); | |
385 | *actcnt = pdc_result[0]; | |
386 | memcpy(iodc_data, pdc_result2, iodc_data_size); | |
09690b18 | 387 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
388 | |
389 | return retval; | |
390 | } | |
391 | EXPORT_SYMBOL(pdc_iodc_read); | |
392 | ||
393 | /** | |
394 | * pdc_system_map_find_mods - Locate unarchitected modules. | |
395 | * @pdc_mod_info: Return buffer address. | |
396 | * @mod_path: pointer to dev path structure. | |
397 | * @mod_index: fixed address module index. | |
398 | * | |
399 | * To locate and identify modules which reside at fixed I/O addresses, which | |
400 | * do not self-identify via architected bus walks. | |
401 | */ | |
402 | int pdc_system_map_find_mods(struct pdc_system_map_mod_info *pdc_mod_info, | |
403 | struct pdc_module_path *mod_path, long mod_index) | |
404 | { | |
405 | int retval; | |
09690b18 | 406 | unsigned long flags; |
1da177e4 | 407 | |
09690b18 | 408 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
409 | retval = mem_pdc_call(PDC_SYSTEM_MAP, PDC_FIND_MODULE, __pa(pdc_result), |
410 | __pa(pdc_result2), mod_index); | |
411 | convert_to_wide(pdc_result); | |
412 | memcpy(pdc_mod_info, pdc_result, sizeof(*pdc_mod_info)); | |
413 | memcpy(mod_path, pdc_result2, sizeof(*mod_path)); | |
09690b18 | 414 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
415 | |
416 | pdc_mod_info->mod_addr = f_extend(pdc_mod_info->mod_addr); | |
417 | return retval; | |
418 | } | |
419 | ||
420 | /** | |
421 | * pdc_system_map_find_addrs - Retrieve additional address ranges. | |
422 | * @pdc_addr_info: Return buffer address. | |
423 | * @mod_index: Fixed address module index. | |
424 | * @addr_index: Address range index. | |
425 | * | |
426 | * Retrieve additional information about subsequent address ranges for modules | |
427 | * with multiple address ranges. | |
428 | */ | |
429 | int pdc_system_map_find_addrs(struct pdc_system_map_addr_info *pdc_addr_info, | |
430 | long mod_index, long addr_index) | |
431 | { | |
432 | int retval; | |
09690b18 | 433 | unsigned long flags; |
1da177e4 | 434 | |
09690b18 | 435 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
436 | retval = mem_pdc_call(PDC_SYSTEM_MAP, PDC_FIND_ADDRESS, __pa(pdc_result), |
437 | mod_index, addr_index); | |
438 | convert_to_wide(pdc_result); | |
439 | memcpy(pdc_addr_info, pdc_result, sizeof(*pdc_addr_info)); | |
09690b18 | 440 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
441 | |
442 | pdc_addr_info->mod_addr = f_extend(pdc_addr_info->mod_addr); | |
443 | return retval; | |
444 | } | |
445 | ||
446 | /** | |
447 | * pdc_model_info - Return model information about the processor. | |
448 | * @model: The return buffer. | |
449 | * | |
450 | * Returns the version numbers, identifiers, and capabilities from the processor module. | |
451 | */ | |
452 | int pdc_model_info(struct pdc_model *model) | |
453 | { | |
454 | int retval; | |
09690b18 | 455 | unsigned long flags; |
1da177e4 | 456 | |
09690b18 | 457 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
458 | retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_INFO, __pa(pdc_result), 0); |
459 | convert_to_wide(pdc_result); | |
460 | memcpy(model, pdc_result, sizeof(*model)); | |
09690b18 | 461 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
462 | |
463 | return retval; | |
464 | } | |
465 | ||
466 | /** | |
467 | * pdc_model_sysmodel - Get the system model name. | |
468 | * @name: A char array of at least 81 characters. | |
469 | * | |
ec1fdc24 KM |
470 | * Get system model name from PDC ROM (e.g. 9000/715 or 9000/778/B160L). |
471 | * Using OS_ID_HPUX will return the equivalent of the 'modelname' command | |
472 | * on HP/UX. | |
1da177e4 LT |
473 | */ |
474 | int pdc_model_sysmodel(char *name) | |
475 | { | |
476 | int retval; | |
09690b18 | 477 | unsigned long flags; |
1da177e4 | 478 | |
09690b18 | 479 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
480 | retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_SYSMODEL, __pa(pdc_result), |
481 | OS_ID_HPUX, __pa(name)); | |
482 | convert_to_wide(pdc_result); | |
483 | ||
484 | if (retval == PDC_OK) { | |
485 | name[pdc_result[0]] = '\0'; /* add trailing '\0' */ | |
486 | } else { | |
487 | name[0] = 0; | |
488 | } | |
09690b18 | 489 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
490 | |
491 | return retval; | |
492 | } | |
493 | ||
494 | /** | |
495 | * pdc_model_versions - Identify the version number of each processor. | |
496 | * @cpu_id: The return buffer. | |
497 | * @id: The id of the processor to check. | |
498 | * | |
499 | * Returns the version number for each processor component. | |
500 | * | |
501 | * This comment was here before, but I do not know what it means :( -RB | |
502 | * id: 0 = cpu revision, 1 = boot-rom-version | |
503 | */ | |
504 | int pdc_model_versions(unsigned long *versions, int id) | |
505 | { | |
506 | int retval; | |
09690b18 | 507 | unsigned long flags; |
1da177e4 | 508 | |
09690b18 | 509 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
510 | retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_VERSIONS, __pa(pdc_result), id); |
511 | convert_to_wide(pdc_result); | |
512 | *versions = pdc_result[0]; | |
09690b18 | 513 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
514 | |
515 | return retval; | |
516 | } | |
517 | ||
518 | /** | |
519 | * pdc_model_cpuid - Returns the CPU_ID. | |
520 | * @cpu_id: The return buffer. | |
521 | * | |
522 | * Returns the CPU_ID value which uniquely identifies the cpu portion of | |
523 | * the processor module. | |
524 | */ | |
525 | int pdc_model_cpuid(unsigned long *cpu_id) | |
526 | { | |
527 | int retval; | |
09690b18 | 528 | unsigned long flags; |
1da177e4 | 529 | |
09690b18 | 530 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
531 | pdc_result[0] = 0; /* preset zero (call may not be implemented!) */ |
532 | retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_CPU_ID, __pa(pdc_result), 0); | |
533 | convert_to_wide(pdc_result); | |
534 | *cpu_id = pdc_result[0]; | |
09690b18 | 535 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
536 | |
537 | return retval; | |
538 | } | |
539 | ||
540 | /** | |
541 | * pdc_model_capabilities - Returns the platform capabilities. | |
542 | * @capabilities: The return buffer. | |
543 | * | |
544 | * Returns information about platform support for 32- and/or 64-bit | |
545 | * OSes, IO-PDIR coherency, and virtual aliasing. | |
546 | */ | |
547 | int pdc_model_capabilities(unsigned long *capabilities) | |
548 | { | |
549 | int retval; | |
09690b18 | 550 | unsigned long flags; |
1da177e4 | 551 | |
09690b18 | 552 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
553 | pdc_result[0] = 0; /* preset zero (call may not be implemented!) */ |
554 | retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_CAPABILITIES, __pa(pdc_result), 0); | |
555 | convert_to_wide(pdc_result); | |
445c088f CW |
556 | if (retval == PDC_OK) { |
557 | *capabilities = pdc_result[0]; | |
558 | } else { | |
559 | *capabilities = PDC_MODEL_OS32; | |
560 | } | |
09690b18 | 561 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
562 | |
563 | return retval; | |
564 | } | |
565 | ||
8207d4ee HD |
566 | /** |
567 | * pdc_model_platform_info - Returns machine product and serial number. | |
568 | * @orig_prod_num: Return buffer for original product number. | |
569 | * @current_prod_num: Return buffer for current product number. | |
570 | * @serial_no: Return buffer for serial number. | |
571 | * | |
572 | * Returns strings containing the original and current product numbers and the | |
573 | * serial number of the system. | |
574 | */ | |
575 | int pdc_model_platform_info(char *orig_prod_num, char *current_prod_num, | |
576 | char *serial_no) | |
577 | { | |
578 | int retval; | |
579 | unsigned long flags; | |
580 | ||
581 | spin_lock_irqsave(&pdc_lock, flags); | |
582 | retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_GET_PLATFORM_INFO, | |
583 | __pa(orig_prod_num), __pa(current_prod_num), __pa(serial_no)); | |
584 | convert_to_wide(pdc_result); | |
585 | spin_unlock_irqrestore(&pdc_lock, flags); | |
586 | ||
587 | return retval; | |
588 | } | |
589 | ||
1da177e4 LT |
590 | /** |
591 | * pdc_cache_info - Return cache and TLB information. | |
592 | * @cache_info: The return buffer. | |
593 | * | |
594 | * Returns information about the processor's cache and TLB. | |
595 | */ | |
596 | int pdc_cache_info(struct pdc_cache_info *cache_info) | |
597 | { | |
598 | int retval; | |
09690b18 | 599 | unsigned long flags; |
1da177e4 | 600 | |
09690b18 | 601 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
602 | retval = mem_pdc_call(PDC_CACHE, PDC_CACHE_INFO, __pa(pdc_result), 0); |
603 | convert_to_wide(pdc_result); | |
604 | memcpy(cache_info, pdc_result, sizeof(*cache_info)); | |
09690b18 | 605 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
606 | |
607 | return retval; | |
608 | } | |
609 | ||
a9d2d386 KM |
610 | /** |
611 | * pdc_spaceid_bits - Return whether Space ID hashing is turned on. | |
612 | * @space_bits: Should be 0, if not, bad mojo! | |
613 | * | |
614 | * Returns information about Space ID hashing. | |
615 | */ | |
616 | int pdc_spaceid_bits(unsigned long *space_bits) | |
617 | { | |
618 | int retval; | |
09690b18 | 619 | unsigned long flags; |
a9d2d386 | 620 | |
09690b18 | 621 | spin_lock_irqsave(&pdc_lock, flags); |
a9d2d386 KM |
622 | pdc_result[0] = 0; |
623 | retval = mem_pdc_call(PDC_CACHE, PDC_CACHE_RET_SPID, __pa(pdc_result), 0); | |
624 | convert_to_wide(pdc_result); | |
625 | *space_bits = pdc_result[0]; | |
09690b18 | 626 | spin_unlock_irqrestore(&pdc_lock, flags); |
a9d2d386 KM |
627 | |
628 | return retval; | |
629 | } | |
630 | ||
1da177e4 LT |
631 | #ifndef CONFIG_PA20 |
632 | /** | |
633 | * pdc_btlb_info - Return block TLB information. | |
634 | * @btlb: The return buffer. | |
635 | * | |
636 | * Returns information about the hardware Block TLB. | |
637 | */ | |
638 | int pdc_btlb_info(struct pdc_btlb_info *btlb) | |
639 | { | |
640 | int retval; | |
09690b18 | 641 | unsigned long flags; |
1da177e4 | 642 | |
09690b18 | 643 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
644 | retval = mem_pdc_call(PDC_BLOCK_TLB, PDC_BTLB_INFO, __pa(pdc_result), 0); |
645 | memcpy(btlb, pdc_result, sizeof(*btlb)); | |
09690b18 | 646 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
647 | |
648 | if(retval < 0) { | |
649 | btlb->max_size = 0; | |
650 | } | |
651 | return retval; | |
652 | } | |
653 | ||
654 | /** | |
655 | * pdc_mem_map_hpa - Find fixed module information. | |
656 | * @address: The return buffer | |
657 | * @mod_path: pointer to dev path structure. | |
658 | * | |
659 | * This call was developed for S700 workstations to allow the kernel to find | |
660 | * the I/O devices (Core I/O). In the future (Kittyhawk and beyond) this | |
661 | * call will be replaced (on workstations) by the architected PDC_SYSTEM_MAP | |
662 | * call. | |
663 | * | |
664 | * This call is supported by all existing S700 workstations (up to Gecko). | |
665 | */ | |
666 | int pdc_mem_map_hpa(struct pdc_memory_map *address, | |
667 | struct pdc_module_path *mod_path) | |
668 | { | |
669 | int retval; | |
09690b18 | 670 | unsigned long flags; |
1da177e4 | 671 | |
09690b18 | 672 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
673 | memcpy(pdc_result2, mod_path, sizeof(*mod_path)); |
674 | retval = mem_pdc_call(PDC_MEM_MAP, PDC_MEM_MAP_HPA, __pa(pdc_result), | |
675 | __pa(pdc_result2)); | |
676 | memcpy(address, pdc_result, sizeof(*address)); | |
09690b18 | 677 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
678 | |
679 | return retval; | |
680 | } | |
681 | #endif /* !CONFIG_PA20 */ | |
682 | ||
683 | /** | |
684 | * pdc_lan_station_id - Get the LAN address. | |
685 | * @lan_addr: The return buffer. | |
686 | * @hpa: The network device HPA. | |
687 | * | |
688 | * Get the LAN station address when it is not directly available from the LAN hardware. | |
689 | */ | |
690 | int pdc_lan_station_id(char *lan_addr, unsigned long hpa) | |
691 | { | |
692 | int retval; | |
09690b18 | 693 | unsigned long flags; |
1da177e4 | 694 | |
09690b18 | 695 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
696 | retval = mem_pdc_call(PDC_LAN_STATION_ID, PDC_LAN_STATION_ID_READ, |
697 | __pa(pdc_result), hpa); | |
698 | if (retval < 0) { | |
699 | /* FIXME: else read MAC from NVRAM */ | |
700 | memset(lan_addr, 0, PDC_LAN_STATION_ID_SIZE); | |
701 | } else { | |
702 | memcpy(lan_addr, pdc_result, PDC_LAN_STATION_ID_SIZE); | |
703 | } | |
09690b18 | 704 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
705 | |
706 | return retval; | |
707 | } | |
708 | EXPORT_SYMBOL(pdc_lan_station_id); | |
709 | ||
710 | /** | |
711 | * pdc_stable_read - Read data from Stable Storage. | |
712 | * @staddr: Stable Storage address to access. | |
713 | * @memaddr: The memory address where Stable Storage data shall be copied. | |
7022672e | 714 | * @count: number of bytes to transfer. count is multiple of 4. |
1da177e4 LT |
715 | * |
716 | * This PDC call reads from the Stable Storage address supplied in staddr | |
717 | * and copies count bytes to the memory address memaddr. | |
718 | * The call will fail if staddr+count > PDC_STABLE size. | |
719 | */ | |
720 | int pdc_stable_read(unsigned long staddr, void *memaddr, unsigned long count) | |
721 | { | |
722 | int retval; | |
09690b18 | 723 | unsigned long flags; |
1da177e4 | 724 | |
09690b18 | 725 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
726 | retval = mem_pdc_call(PDC_STABLE, PDC_STABLE_READ, staddr, |
727 | __pa(pdc_result), count); | |
728 | convert_to_wide(pdc_result); | |
729 | memcpy(memaddr, pdc_result, count); | |
09690b18 | 730 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
731 | |
732 | return retval; | |
733 | } | |
734 | EXPORT_SYMBOL(pdc_stable_read); | |
735 | ||
736 | /** | |
737 | * pdc_stable_write - Write data to Stable Storage. | |
738 | * @staddr: Stable Storage address to access. | |
739 | * @memaddr: The memory address where Stable Storage data shall be read from. | |
7022672e | 740 | * @count: number of bytes to transfer. count is multiple of 4. |
1da177e4 LT |
741 | * |
742 | * This PDC call reads count bytes from the supplied memaddr address, | |
743 | * and copies count bytes to the Stable Storage address staddr. | |
744 | * The call will fail if staddr+count > PDC_STABLE size. | |
745 | */ | |
746 | int pdc_stable_write(unsigned long staddr, void *memaddr, unsigned long count) | |
747 | { | |
748 | int retval; | |
09690b18 | 749 | unsigned long flags; |
1da177e4 | 750 | |
09690b18 | 751 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
752 | memcpy(pdc_result, memaddr, count); |
753 | convert_to_wide(pdc_result); | |
754 | retval = mem_pdc_call(PDC_STABLE, PDC_STABLE_WRITE, staddr, | |
755 | __pa(pdc_result), count); | |
09690b18 | 756 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
757 | |
758 | return retval; | |
759 | } | |
760 | EXPORT_SYMBOL(pdc_stable_write); | |
761 | ||
762 | /** | |
763 | * pdc_stable_get_size - Get Stable Storage size in bytes. | |
764 | * @size: pointer where the size will be stored. | |
765 | * | |
766 | * This PDC call returns the number of bytes in the processor's Stable | |
767 | * Storage, which is the number of contiguous bytes implemented in Stable | |
768 | * Storage starting from staddr=0. size in an unsigned 64-bit integer | |
769 | * which is a multiple of four. | |
770 | */ | |
771 | int pdc_stable_get_size(unsigned long *size) | |
772 | { | |
773 | int retval; | |
09690b18 | 774 | unsigned long flags; |
1da177e4 | 775 | |
09690b18 | 776 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
777 | retval = mem_pdc_call(PDC_STABLE, PDC_STABLE_RETURN_SIZE, __pa(pdc_result)); |
778 | *size = pdc_result[0]; | |
09690b18 | 779 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
780 | |
781 | return retval; | |
782 | } | |
783 | EXPORT_SYMBOL(pdc_stable_get_size); | |
784 | ||
785 | /** | |
786 | * pdc_stable_verify_contents - Checks that Stable Storage contents are valid. | |
787 | * | |
788 | * This PDC call is meant to be used to check the integrity of the current | |
789 | * contents of Stable Storage. | |
790 | */ | |
791 | int pdc_stable_verify_contents(void) | |
792 | { | |
793 | int retval; | |
09690b18 | 794 | unsigned long flags; |
1da177e4 | 795 | |
09690b18 | 796 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 | 797 | retval = mem_pdc_call(PDC_STABLE, PDC_STABLE_VERIFY_CONTENTS); |
09690b18 | 798 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
799 | |
800 | return retval; | |
801 | } | |
802 | EXPORT_SYMBOL(pdc_stable_verify_contents); | |
803 | ||
804 | /** | |
805 | * pdc_stable_initialize - Sets Stable Storage contents to zero and initialize | |
806 | * the validity indicator. | |
807 | * | |
808 | * This PDC call will erase all contents of Stable Storage. Use with care! | |
809 | */ | |
810 | int pdc_stable_initialize(void) | |
811 | { | |
812 | int retval; | |
09690b18 | 813 | unsigned long flags; |
1da177e4 | 814 | |
09690b18 | 815 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 | 816 | retval = mem_pdc_call(PDC_STABLE, PDC_STABLE_INITIALIZE); |
09690b18 | 817 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
818 | |
819 | return retval; | |
820 | } | |
821 | EXPORT_SYMBOL(pdc_stable_initialize); | |
822 | ||
823 | /** | |
824 | * pdc_get_initiator - Get the SCSI Interface Card params (SCSI ID, SDTR, SE or LVD) | |
825 | * @hwpath: fully bc.mod style path to the device. | |
826 | * @initiator: the array to return the result into | |
827 | * | |
828 | * Get the SCSI operational parameters from PDC. | |
829 | * Needed since HPUX never used BIOS or symbios card NVRAM. | |
830 | * Most ncr/sym cards won't have an entry and just use whatever | |
831 | * capabilities of the card are (eg Ultra, LVD). But there are | |
832 | * several cases where it's useful: | |
833 | * o set SCSI id for Multi-initiator clusters, | |
834 | * o cable too long (ie SE scsi 10Mhz won't support 6m length), | |
835 | * o bus width exported is less than what the interface chip supports. | |
836 | */ | |
837 | int pdc_get_initiator(struct hardware_path *hwpath, struct pdc_initiator *initiator) | |
838 | { | |
839 | int retval; | |
09690b18 | 840 | unsigned long flags; |
1da177e4 | 841 | |
09690b18 | 842 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
843 | |
844 | /* BCJ-XXXX series boxes. E.G. "9000/785/C3000" */ | |
845 | #define IS_SPROCKETS() (strlen(boot_cpu_data.pdc.sys_model_name) == 14 && \ | |
846 | strncmp(boot_cpu_data.pdc.sys_model_name, "9000/785", 8) == 0) | |
847 | ||
848 | retval = mem_pdc_call(PDC_INITIATOR, PDC_GET_INITIATOR, | |
849 | __pa(pdc_result), __pa(hwpath)); | |
850 | if (retval < PDC_OK) | |
851 | goto out; | |
852 | ||
853 | if (pdc_result[0] < 16) { | |
854 | initiator->host_id = pdc_result[0]; | |
855 | } else { | |
856 | initiator->host_id = -1; | |
857 | } | |
858 | ||
859 | /* | |
860 | * Sprockets and Piranha return 20 or 40 (MT/s). Prelude returns | |
861 | * 1, 2, 5 or 10 for 5, 10, 20 or 40 MT/s, respectively | |
862 | */ | |
863 | switch (pdc_result[1]) { | |
864 | case 1: initiator->factor = 50; break; | |
865 | case 2: initiator->factor = 25; break; | |
866 | case 5: initiator->factor = 12; break; | |
867 | case 25: initiator->factor = 10; break; | |
868 | case 20: initiator->factor = 12; break; | |
869 | case 40: initiator->factor = 10; break; | |
870 | default: initiator->factor = -1; break; | |
871 | } | |
872 | ||
873 | if (IS_SPROCKETS()) { | |
874 | initiator->width = pdc_result[4]; | |
875 | initiator->mode = pdc_result[5]; | |
876 | } else { | |
877 | initiator->width = -1; | |
878 | initiator->mode = -1; | |
879 | } | |
880 | ||
881 | out: | |
09690b18 KM |
882 | spin_unlock_irqrestore(&pdc_lock, flags); |
883 | ||
1da177e4 LT |
884 | return (retval >= PDC_OK); |
885 | } | |
886 | EXPORT_SYMBOL(pdc_get_initiator); | |
887 | ||
888 | ||
889 | /** | |
890 | * pdc_pci_irt_size - Get the number of entries in the interrupt routing table. | |
891 | * @num_entries: The return value. | |
892 | * @hpa: The HPA for the device. | |
893 | * | |
894 | * This PDC function returns the number of entries in the specified cell's | |
895 | * interrupt table. | |
896 | * Similar to PDC_PAT stuff - but added for Forte/Allegro boxes | |
897 | */ | |
898 | int pdc_pci_irt_size(unsigned long *num_entries, unsigned long hpa) | |
899 | { | |
900 | int retval; | |
09690b18 | 901 | unsigned long flags; |
1da177e4 | 902 | |
09690b18 | 903 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
904 | retval = mem_pdc_call(PDC_PCI_INDEX, PDC_PCI_GET_INT_TBL_SIZE, |
905 | __pa(pdc_result), hpa); | |
906 | convert_to_wide(pdc_result); | |
907 | *num_entries = pdc_result[0]; | |
09690b18 | 908 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
909 | |
910 | return retval; | |
911 | } | |
912 | ||
913 | /** | |
914 | * pdc_pci_irt - Get the PCI interrupt routing table. | |
915 | * @num_entries: The number of entries in the table. | |
916 | * @hpa: The Hard Physical Address of the device. | |
917 | * @tbl: | |
918 | * | |
919 | * Get the PCI interrupt routing table for the device at the given HPA. | |
920 | * Similar to PDC_PAT stuff - but added for Forte/Allegro boxes | |
921 | */ | |
922 | int pdc_pci_irt(unsigned long num_entries, unsigned long hpa, void *tbl) | |
923 | { | |
924 | int retval; | |
09690b18 | 925 | unsigned long flags; |
1da177e4 LT |
926 | |
927 | BUG_ON((unsigned long)tbl & 0x7); | |
928 | ||
09690b18 | 929 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
930 | pdc_result[0] = num_entries; |
931 | retval = mem_pdc_call(PDC_PCI_INDEX, PDC_PCI_GET_INT_TBL, | |
932 | __pa(pdc_result), hpa, __pa(tbl)); | |
09690b18 | 933 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
934 | |
935 | return retval; | |
936 | } | |
937 | ||
938 | ||
939 | #if 0 /* UNTEST CODE - left here in case someone needs it */ | |
940 | ||
941 | /** | |
942 | * pdc_pci_config_read - read PCI config space. | |
943 | * @hpa token from PDC to indicate which PCI device | |
944 | * @pci_addr configuration space address to read from | |
945 | * | |
946 | * Read PCI Configuration space *before* linux PCI subsystem is running. | |
947 | */ | |
948 | unsigned int pdc_pci_config_read(void *hpa, unsigned long cfg_addr) | |
949 | { | |
950 | int retval; | |
09690b18 KM |
951 | unsigned long flags; |
952 | ||
953 | spin_lock_irqsave(&pdc_lock, flags); | |
1da177e4 LT |
954 | pdc_result[0] = 0; |
955 | pdc_result[1] = 0; | |
956 | retval = mem_pdc_call(PDC_PCI_INDEX, PDC_PCI_READ_CONFIG, | |
957 | __pa(pdc_result), hpa, cfg_addr&~3UL, 4UL); | |
09690b18 KM |
958 | spin_unlock_irqrestore(&pdc_lock, flags); |
959 | ||
1da177e4 LT |
960 | return retval ? ~0 : (unsigned int) pdc_result[0]; |
961 | } | |
962 | ||
963 | ||
964 | /** | |
965 | * pdc_pci_config_write - read PCI config space. | |
966 | * @hpa token from PDC to indicate which PCI device | |
967 | * @pci_addr configuration space address to write | |
968 | * @val value we want in the 32-bit register | |
969 | * | |
970 | * Write PCI Configuration space *before* linux PCI subsystem is running. | |
971 | */ | |
972 | void pdc_pci_config_write(void *hpa, unsigned long cfg_addr, unsigned int val) | |
973 | { | |
974 | int retval; | |
09690b18 KM |
975 | unsigned long flags; |
976 | ||
977 | spin_lock_irqsave(&pdc_lock, flags); | |
1da177e4 LT |
978 | pdc_result[0] = 0; |
979 | retval = mem_pdc_call(PDC_PCI_INDEX, PDC_PCI_WRITE_CONFIG, | |
980 | __pa(pdc_result), hpa, | |
981 | cfg_addr&~3UL, 4UL, (unsigned long) val); | |
09690b18 KM |
982 | spin_unlock_irqrestore(&pdc_lock, flags); |
983 | ||
1da177e4 LT |
984 | return retval; |
985 | } | |
986 | #endif /* UNTESTED CODE */ | |
987 | ||
988 | /** | |
989 | * pdc_tod_read - Read the Time-Of-Day clock. | |
990 | * @tod: The return buffer: | |
991 | * | |
992 | * Read the Time-Of-Day clock | |
993 | */ | |
994 | int pdc_tod_read(struct pdc_tod *tod) | |
995 | { | |
996 | int retval; | |
09690b18 | 997 | unsigned long flags; |
1da177e4 | 998 | |
09690b18 | 999 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1000 | retval = mem_pdc_call(PDC_TOD, PDC_TOD_READ, __pa(pdc_result), 0); |
1001 | convert_to_wide(pdc_result); | |
1002 | memcpy(tod, pdc_result, sizeof(*tod)); | |
09690b18 | 1003 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1004 | |
1005 | return retval; | |
1006 | } | |
1007 | EXPORT_SYMBOL(pdc_tod_read); | |
1008 | ||
c9c2877d HD |
1009 | int pdc_mem_pdt_info(struct pdc_mem_retinfo *rinfo) |
1010 | { | |
1011 | int retval; | |
1012 | unsigned long flags; | |
1013 | ||
1014 | spin_lock_irqsave(&pdc_lock, flags); | |
1015 | retval = mem_pdc_call(PDC_MEM, PDC_MEM_MEMINFO, __pa(pdc_result), 0); | |
1016 | convert_to_wide(pdc_result); | |
1017 | memcpy(rinfo, pdc_result, sizeof(*rinfo)); | |
1018 | spin_unlock_irqrestore(&pdc_lock, flags); | |
1019 | ||
1020 | return retval; | |
1021 | } | |
1022 | ||
1023 | int pdc_mem_pdt_read_entries(struct pdc_mem_read_pdt *pret, | |
1024 | unsigned long *pdt_entries_ptr) | |
1025 | { | |
1026 | int retval; | |
1027 | unsigned long flags; | |
1028 | ||
1029 | spin_lock_irqsave(&pdc_lock, flags); | |
1030 | retval = mem_pdc_call(PDC_MEM, PDC_MEM_READ_PDT, __pa(pdc_result), | |
8a5aa00e | 1031 | __pa(pdt_entries_ptr)); |
c9c2877d HD |
1032 | if (retval == PDC_OK) { |
1033 | convert_to_wide(pdc_result); | |
1034 | memcpy(pret, pdc_result, sizeof(*pret)); | |
c9c2877d HD |
1035 | } |
1036 | spin_unlock_irqrestore(&pdc_lock, flags); | |
1037 | ||
8a5aa00e HD |
1038 | #ifdef CONFIG_64BIT |
1039 | /* | |
1040 | * 64-bit kernels should not call this PDT function in narrow mode. | |
1041 | * The pdt_entries_ptr array above will now contain 32-bit values | |
1042 | */ | |
1043 | if (WARN_ON_ONCE((retval == PDC_OK) && parisc_narrow_firmware)) | |
1044 | return PDC_ERROR; | |
1045 | #endif | |
1046 | ||
c9c2877d HD |
1047 | return retval; |
1048 | } | |
1049 | ||
1da177e4 LT |
1050 | /** |
1051 | * pdc_tod_set - Set the Time-Of-Day clock. | |
1052 | * @sec: The number of seconds since epoch. | |
1053 | * @usec: The number of micro seconds. | |
1054 | * | |
1055 | * Set the Time-Of-Day clock. | |
1056 | */ | |
1057 | int pdc_tod_set(unsigned long sec, unsigned long usec) | |
1058 | { | |
1059 | int retval; | |
09690b18 | 1060 | unsigned long flags; |
1da177e4 | 1061 | |
09690b18 | 1062 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 | 1063 | retval = mem_pdc_call(PDC_TOD, PDC_TOD_WRITE, sec, usec); |
09690b18 | 1064 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1065 | |
1066 | return retval; | |
1067 | } | |
1068 | EXPORT_SYMBOL(pdc_tod_set); | |
1069 | ||
a8f44e38 | 1070 | #ifdef CONFIG_64BIT |
1da177e4 LT |
1071 | int pdc_mem_mem_table(struct pdc_memory_table_raddr *r_addr, |
1072 | struct pdc_memory_table *tbl, unsigned long entries) | |
1073 | { | |
1074 | int retval; | |
09690b18 | 1075 | unsigned long flags; |
1da177e4 | 1076 | |
09690b18 | 1077 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1078 | retval = mem_pdc_call(PDC_MEM, PDC_MEM_TABLE, __pa(pdc_result), __pa(pdc_result2), entries); |
1079 | convert_to_wide(pdc_result); | |
1080 | memcpy(r_addr, pdc_result, sizeof(*r_addr)); | |
1081 | memcpy(tbl, pdc_result2, entries * sizeof(*tbl)); | |
09690b18 | 1082 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1083 | |
1084 | return retval; | |
1085 | } | |
a8f44e38 | 1086 | #endif /* CONFIG_64BIT */ |
1da177e4 LT |
1087 | |
1088 | /* FIXME: Is this pdc used? I could not find type reference to ftc_bitmap | |
1089 | * so I guessed at unsigned long. Someone who knows what this does, can fix | |
1090 | * it later. :) | |
1091 | */ | |
1092 | int pdc_do_firm_test_reset(unsigned long ftc_bitmap) | |
1093 | { | |
1094 | int retval; | |
09690b18 | 1095 | unsigned long flags; |
1da177e4 | 1096 | |
09690b18 | 1097 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1098 | retval = mem_pdc_call(PDC_BROADCAST_RESET, PDC_DO_FIRM_TEST_RESET, |
1099 | PDC_FIRM_TEST_MAGIC, ftc_bitmap); | |
09690b18 | 1100 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1101 | |
1102 | return retval; | |
1103 | } | |
1104 | ||
1105 | /* | |
1106 | * pdc_do_reset - Reset the system. | |
1107 | * | |
1108 | * Reset the system. | |
1109 | */ | |
1110 | int pdc_do_reset(void) | |
1111 | { | |
1112 | int retval; | |
09690b18 | 1113 | unsigned long flags; |
1da177e4 | 1114 | |
09690b18 | 1115 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 | 1116 | retval = mem_pdc_call(PDC_BROADCAST_RESET, PDC_DO_RESET); |
09690b18 | 1117 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1118 | |
1119 | return retval; | |
1120 | } | |
1121 | ||
1122 | /* | |
1123 | * pdc_soft_power_info - Enable soft power switch. | |
1124 | * @power_reg: address of soft power register | |
1125 | * | |
1126 | * Return the absolute address of the soft power switch register | |
1127 | */ | |
1128 | int __init pdc_soft_power_info(unsigned long *power_reg) | |
1129 | { | |
1130 | int retval; | |
09690b18 | 1131 | unsigned long flags; |
1da177e4 LT |
1132 | |
1133 | *power_reg = (unsigned long) (-1); | |
1134 | ||
09690b18 | 1135 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1136 | retval = mem_pdc_call(PDC_SOFT_POWER, PDC_SOFT_POWER_INFO, __pa(pdc_result), 0); |
1137 | if (retval == PDC_OK) { | |
1138 | convert_to_wide(pdc_result); | |
1139 | *power_reg = f_extend(pdc_result[0]); | |
1140 | } | |
09690b18 | 1141 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1142 | |
1143 | return retval; | |
1144 | } | |
1145 | ||
1146 | /* | |
1147 | * pdc_soft_power_button - Control the soft power button behaviour | |
1148 | * @sw_control: 0 for hardware control, 1 for software control | |
1149 | * | |
1150 | * | |
1151 | * This PDC function places the soft power button under software or | |
1152 | * hardware control. | |
1153 | * Under software control the OS may control to when to allow to shut | |
1154 | * down the system. Under hardware control pressing the power button | |
1155 | * powers off the system immediately. | |
1156 | */ | |
1157 | int pdc_soft_power_button(int sw_control) | |
1158 | { | |
1159 | int retval; | |
09690b18 KM |
1160 | unsigned long flags; |
1161 | ||
1162 | spin_lock_irqsave(&pdc_lock, flags); | |
1da177e4 | 1163 | retval = mem_pdc_call(PDC_SOFT_POWER, PDC_SOFT_POWER_ENABLE, __pa(pdc_result), sw_control); |
09690b18 KM |
1164 | spin_unlock_irqrestore(&pdc_lock, flags); |
1165 | ||
1da177e4 LT |
1166 | return retval; |
1167 | } | |
1168 | ||
1169 | /* | |
1170 | * pdc_io_reset - Hack to avoid overlapping range registers of Bridges devices. | |
1171 | * Primarily a problem on T600 (which parisc-linux doesn't support) but | |
1172 | * who knows what other platform firmware might do with this OS "hook". | |
1173 | */ | |
1174 | void pdc_io_reset(void) | |
1175 | { | |
09690b18 KM |
1176 | unsigned long flags; |
1177 | ||
1178 | spin_lock_irqsave(&pdc_lock, flags); | |
1da177e4 | 1179 | mem_pdc_call(PDC_IO, PDC_IO_RESET, 0); |
09690b18 | 1180 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1181 | } |
1182 | ||
1183 | /* | |
1184 | * pdc_io_reset_devices - Hack to Stop USB controller | |
1185 | * | |
1186 | * If PDC used the usb controller, the usb controller | |
1187 | * is still running and will crash the machines during iommu | |
1188 | * setup, because of still running DMA. This PDC call | |
1189 | * stops the USB controller. | |
1190 | * Normally called after calling pdc_io_reset(). | |
1191 | */ | |
1192 | void pdc_io_reset_devices(void) | |
1193 | { | |
09690b18 KM |
1194 | unsigned long flags; |
1195 | ||
1196 | spin_lock_irqsave(&pdc_lock, flags); | |
1da177e4 | 1197 | mem_pdc_call(PDC_IO, PDC_IO_RESET_DEVICES, 0); |
09690b18 | 1198 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1199 | } |
1200 | ||
f5213b2c HD |
1201 | #endif /* defined(BOOTLOADER) */ |
1202 | ||
ef1afd4d KM |
1203 | /* locked by pdc_console_lock */ |
1204 | static int __attribute__((aligned(8))) iodc_retbuf[32]; | |
1205 | static char __attribute__((aligned(64))) iodc_dbuf[4096]; | |
1da177e4 LT |
1206 | |
1207 | /** | |
721fdf34 KM |
1208 | * pdc_iodc_print - Console print using IODC. |
1209 | * @str: the string to output. | |
1210 | * @count: length of str | |
1da177e4 LT |
1211 | * |
1212 | * Note that only these special chars are architected for console IODC io: | |
1213 | * BEL, BS, CR, and LF. Others are passed through. | |
1214 | * Since the HP console requires CR+LF to perform a 'newline', we translate | |
1215 | * "\n" to "\r\n". | |
1216 | */ | |
ef1afd4d | 1217 | int pdc_iodc_print(const unsigned char *str, unsigned count) |
1da177e4 | 1218 | { |
721fdf34 | 1219 | unsigned int i; |
c53421b1 | 1220 | unsigned long flags; |
1da177e4 | 1221 | |
fbea6684 | 1222 | for (i = 0; i < count;) { |
721fdf34 KM |
1223 | switch(str[i]) { |
1224 | case '\n': | |
1225 | iodc_dbuf[i+0] = '\r'; | |
1226 | iodc_dbuf[i+1] = '\n'; | |
1227 | i += 2; | |
ef1afd4d | 1228 | goto print; |
721fdf34 KM |
1229 | default: |
1230 | iodc_dbuf[i] = str[i]; | |
d9b68e5e | 1231 | i++; |
721fdf34 KM |
1232 | break; |
1233 | } | |
1234 | } | |
1da177e4 | 1235 | |
ef1afd4d | 1236 | print: |
1da177e4 LT |
1237 | spin_lock_irqsave(&pdc_lock, flags); |
1238 | real32_call(PAGE0->mem_cons.iodc_io, | |
1239 | (unsigned long)PAGE0->mem_cons.hpa, ENTRY_IO_COUT, | |
1240 | PAGE0->mem_cons.spa, __pa(PAGE0->mem_cons.dp.layers), | |
721fdf34 | 1241 | __pa(iodc_retbuf), 0, __pa(iodc_dbuf), i, 0); |
1da177e4 | 1242 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 | 1243 | |
721fdf34 | 1244 | return i; |
1da177e4 LT |
1245 | } |
1246 | ||
f5213b2c | 1247 | #if !defined(BOOTLOADER) |
1da177e4 LT |
1248 | /** |
1249 | * pdc_iodc_getc - Read a character (non-blocking) from the PDC console. | |
1250 | * | |
1251 | * Read a character (non-blocking) from the PDC console, returns -1 if | |
1252 | * key is not present. | |
1253 | */ | |
1254 | int pdc_iodc_getc(void) | |
1255 | { | |
1da177e4 LT |
1256 | int ch; |
1257 | int status; | |
ef1afd4d | 1258 | unsigned long flags; |
1da177e4 LT |
1259 | |
1260 | /* Bail if no console input device. */ | |
1261 | if (!PAGE0->mem_kbd.iodc_io) | |
1262 | return 0; | |
1263 | ||
1264 | /* wait for a keyboard (rs232)-input */ | |
1265 | spin_lock_irqsave(&pdc_lock, flags); | |
1266 | real32_call(PAGE0->mem_kbd.iodc_io, | |
1267 | (unsigned long)PAGE0->mem_kbd.hpa, ENTRY_IO_CIN, | |
1268 | PAGE0->mem_kbd.spa, __pa(PAGE0->mem_kbd.dp.layers), | |
1269 | __pa(iodc_retbuf), 0, __pa(iodc_dbuf), 1, 0); | |
1270 | ||
1271 | ch = *iodc_dbuf; | |
1272 | status = *iodc_retbuf; | |
1273 | spin_unlock_irqrestore(&pdc_lock, flags); | |
1274 | ||
1275 | if (status == 0) | |
1276 | return -1; | |
1277 | ||
1278 | return ch; | |
1279 | } | |
1280 | ||
1281 | int pdc_sti_call(unsigned long func, unsigned long flags, | |
1282 | unsigned long inptr, unsigned long outputr, | |
1283 | unsigned long glob_cfg) | |
1284 | { | |
1285 | int retval; | |
09690b18 | 1286 | unsigned long irqflags; |
1da177e4 | 1287 | |
09690b18 | 1288 | spin_lock_irqsave(&pdc_lock, irqflags); |
1da177e4 | 1289 | retval = real32_call(func, flags, inptr, outputr, glob_cfg); |
09690b18 | 1290 | spin_unlock_irqrestore(&pdc_lock, irqflags); |
1da177e4 LT |
1291 | |
1292 | return retval; | |
1293 | } | |
1294 | EXPORT_SYMBOL(pdc_sti_call); | |
1295 | ||
a8f44e38 | 1296 | #ifdef CONFIG_64BIT |
1da177e4 LT |
1297 | /** |
1298 | * pdc_pat_cell_get_number - Returns the cell number. | |
1299 | * @cell_info: The return buffer. | |
1300 | * | |
1301 | * This PDC call returns the cell number of the cell from which the call | |
1302 | * is made. | |
1303 | */ | |
1304 | int pdc_pat_cell_get_number(struct pdc_pat_cell_num *cell_info) | |
1305 | { | |
1306 | int retval; | |
09690b18 | 1307 | unsigned long flags; |
1da177e4 | 1308 | |
09690b18 | 1309 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1310 | retval = mem_pdc_call(PDC_PAT_CELL, PDC_PAT_CELL_GET_NUMBER, __pa(pdc_result)); |
1311 | memcpy(cell_info, pdc_result, sizeof(*cell_info)); | |
09690b18 | 1312 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1313 | |
1314 | return retval; | |
1315 | } | |
1316 | ||
1317 | /** | |
1318 | * pdc_pat_cell_module - Retrieve the cell's module information. | |
1319 | * @actcnt: The number of bytes written to mem_addr. | |
1320 | * @ploc: The physical location. | |
1321 | * @mod: The module index. | |
1322 | * @view_type: The view of the address type. | |
1323 | * @mem_addr: The return buffer. | |
1324 | * | |
1325 | * This PDC call returns information about each module attached to the cell | |
1326 | * at the specified location. | |
1327 | */ | |
1328 | int pdc_pat_cell_module(unsigned long *actcnt, unsigned long ploc, unsigned long mod, | |
1329 | unsigned long view_type, void *mem_addr) | |
1330 | { | |
1331 | int retval; | |
09690b18 | 1332 | unsigned long flags; |
1da177e4 LT |
1333 | static struct pdc_pat_cell_mod_maddr_block result __attribute__ ((aligned (8))); |
1334 | ||
09690b18 | 1335 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1336 | retval = mem_pdc_call(PDC_PAT_CELL, PDC_PAT_CELL_MODULE, __pa(pdc_result), |
1337 | ploc, mod, view_type, __pa(&result)); | |
1338 | if(!retval) { | |
1339 | *actcnt = pdc_result[0]; | |
1340 | memcpy(mem_addr, &result, *actcnt); | |
1341 | } | |
09690b18 | 1342 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1343 | |
1344 | return retval; | |
1345 | } | |
1346 | ||
fe8376db HD |
1347 | /** |
1348 | * pdc_pat_cell_info - Retrieve the cell's information. | |
1349 | * @info: The pointer to a struct pdc_pat_cell_info_rtn_block. | |
1350 | * @actcnt: The number of bytes which should be written to info. | |
1351 | * @offset: offset of the structure. | |
1352 | * @cell_number: The cell number which should be asked, or -1 for current cell. | |
1353 | * | |
1354 | * This PDC call returns information about the given cell (or all cells). | |
1355 | */ | |
1356 | int pdc_pat_cell_info(struct pdc_pat_cell_info_rtn_block *info, | |
1357 | unsigned long *actcnt, unsigned long offset, | |
1358 | unsigned long cell_number) | |
1359 | { | |
1360 | int retval; | |
1361 | unsigned long flags; | |
1362 | struct pdc_pat_cell_info_rtn_block result; | |
1363 | ||
1364 | spin_lock_irqsave(&pdc_lock, flags); | |
1365 | retval = mem_pdc_call(PDC_PAT_CELL, PDC_PAT_CELL_GET_INFO, | |
1366 | __pa(pdc_result), __pa(&result), *actcnt, | |
1367 | offset, cell_number); | |
1368 | if (!retval) { | |
1369 | *actcnt = pdc_result[0]; | |
1370 | memcpy(info, &result, *actcnt); | |
1371 | } | |
1372 | spin_unlock_irqrestore(&pdc_lock, flags); | |
1373 | ||
1374 | return retval; | |
1375 | } | |
1376 | ||
1da177e4 LT |
1377 | /** |
1378 | * pdc_pat_cpu_get_number - Retrieve the cpu number. | |
1379 | * @cpu_info: The return buffer. | |
1380 | * @hpa: The Hard Physical Address of the CPU. | |
1381 | * | |
1382 | * Retrieve the cpu number for the cpu at the specified HPA. | |
1383 | */ | |
637250cc | 1384 | int pdc_pat_cpu_get_number(struct pdc_pat_cpu_num *cpu_info, unsigned long hpa) |
1da177e4 LT |
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_CPU, PDC_PAT_CPU_GET_NUMBER, |
1391 | __pa(&pdc_result), hpa); | |
1392 | memcpy(cpu_info, pdc_result, sizeof(*cpu_info)); | |
09690b18 | 1393 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1394 | |
1395 | return retval; | |
1396 | } | |
1397 | ||
1398 | /** | |
1399 | * pdc_pat_get_irt_size - Retrieve the number of entries in the cell's interrupt table. | |
1400 | * @num_entries: The return value. | |
1401 | * @cell_num: The target cell. | |
1402 | * | |
1403 | * This PDC function returns the number of entries in the specified cell's | |
1404 | * interrupt table. | |
1405 | */ | |
1406 | int pdc_pat_get_irt_size(unsigned long *num_entries, unsigned long cell_num) | |
1407 | { | |
1408 | int retval; | |
09690b18 | 1409 | unsigned long flags; |
1da177e4 | 1410 | |
09690b18 | 1411 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1412 | retval = mem_pdc_call(PDC_PAT_IO, PDC_PAT_IO_GET_PCI_ROUTING_TABLE_SIZE, |
1413 | __pa(pdc_result), cell_num); | |
1414 | *num_entries = pdc_result[0]; | |
09690b18 | 1415 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1416 | |
1417 | return retval; | |
1418 | } | |
1419 | ||
1420 | /** | |
1421 | * pdc_pat_get_irt - Retrieve the cell's interrupt table. | |
1422 | * @r_addr: The return buffer. | |
1423 | * @cell_num: The target cell. | |
1424 | * | |
1425 | * This PDC function returns the actual interrupt table for the specified cell. | |
1426 | */ | |
1427 | int pdc_pat_get_irt(void *r_addr, unsigned long cell_num) | |
1428 | { | |
1429 | int retval; | |
09690b18 | 1430 | unsigned long flags; |
1da177e4 | 1431 | |
09690b18 | 1432 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1433 | retval = mem_pdc_call(PDC_PAT_IO, PDC_PAT_IO_GET_PCI_ROUTING_TABLE, |
1434 | __pa(r_addr), cell_num); | |
09690b18 | 1435 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1436 | |
1437 | return retval; | |
1438 | } | |
1439 | ||
1440 | /** | |
1441 | * pdc_pat_pd_get_addr_map - Retrieve information about memory address ranges. | |
1442 | * @actlen: The return buffer. | |
1443 | * @mem_addr: Pointer to the memory buffer. | |
1444 | * @count: The number of bytes to read from the buffer. | |
1445 | * @offset: The offset with respect to the beginning of the buffer. | |
1446 | * | |
1447 | */ | |
1448 | int pdc_pat_pd_get_addr_map(unsigned long *actual_len, void *mem_addr, | |
1449 | unsigned long count, unsigned long offset) | |
1450 | { | |
1451 | int retval; | |
09690b18 | 1452 | unsigned long flags; |
1da177e4 | 1453 | |
09690b18 | 1454 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1455 | retval = mem_pdc_call(PDC_PAT_PD, PDC_PAT_PD_GET_ADDR_MAP, __pa(pdc_result), |
1456 | __pa(pdc_result2), count, offset); | |
1457 | *actual_len = pdc_result[0]; | |
1458 | memcpy(mem_addr, pdc_result2, *actual_len); | |
09690b18 | 1459 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1460 | |
1461 | return retval; | |
1462 | } | |
1463 | ||
fe8376db HD |
1464 | /** |
1465 | * pdc_pat_pd_get_PDC_interface_revisions - Retrieve PDC interface revisions. | |
1466 | * @legacy_rev: The legacy revision. | |
1467 | * @pat_rev: The PAT revision. | |
1468 | * @pdc_cap: The PDC capabilities. | |
1469 | * | |
1470 | */ | |
1471 | int pdc_pat_pd_get_pdc_revisions(unsigned long *legacy_rev, | |
1472 | unsigned long *pat_rev, unsigned long *pdc_cap) | |
1473 | { | |
1474 | int retval; | |
1475 | unsigned long flags; | |
1476 | ||
1477 | spin_lock_irqsave(&pdc_lock, flags); | |
1478 | retval = mem_pdc_call(PDC_PAT_PD, PDC_PAT_PD_GET_PDC_INTERF_REV, | |
1479 | __pa(pdc_result)); | |
1480 | if (retval == PDC_OK) { | |
1481 | *legacy_rev = pdc_result[0]; | |
1482 | *pat_rev = pdc_result[1]; | |
1483 | *pdc_cap = pdc_result[2]; | |
1484 | } | |
1485 | spin_unlock_irqrestore(&pdc_lock, flags); | |
1486 | ||
1487 | return retval; | |
1488 | } | |
1489 | ||
1490 | ||
1da177e4 LT |
1491 | /** |
1492 | * pdc_pat_io_pci_cfg_read - Read PCI configuration space. | |
1493 | * @pci_addr: PCI configuration space address for which the read request is being made. | |
1494 | * @pci_size: Size of read in bytes. Valid values are 1, 2, and 4. | |
1495 | * @mem_addr: Pointer to return memory buffer. | |
1496 | * | |
1497 | */ | |
1498 | int pdc_pat_io_pci_cfg_read(unsigned long pci_addr, int pci_size, u32 *mem_addr) | |
1499 | { | |
1500 | int retval; | |
09690b18 KM |
1501 | unsigned long flags; |
1502 | ||
1503 | spin_lock_irqsave(&pdc_lock, flags); | |
1da177e4 LT |
1504 | retval = mem_pdc_call(PDC_PAT_IO, PDC_PAT_IO_PCI_CONFIG_READ, |
1505 | __pa(pdc_result), pci_addr, pci_size); | |
1506 | switch(pci_size) { | |
49ea1480 HD |
1507 | case 1: *(u8 *) mem_addr = (u8) pdc_result[0]; break; |
1508 | case 2: *(u16 *)mem_addr = (u16) pdc_result[0]; break; | |
1509 | case 4: *(u32 *)mem_addr = (u32) pdc_result[0]; break; | |
1da177e4 | 1510 | } |
09690b18 | 1511 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1512 | |
1513 | return retval; | |
1514 | } | |
1515 | ||
1516 | /** | |
1517 | * pdc_pat_io_pci_cfg_write - Retrieve information about memory address ranges. | |
1518 | * @pci_addr: PCI configuration space address for which the write request is being made. | |
1519 | * @pci_size: Size of write in bytes. Valid values are 1, 2, and 4. | |
1520 | * @value: Pointer to 1, 2, or 4 byte value in low order end of argument to be | |
1521 | * written to PCI Config space. | |
1522 | * | |
1523 | */ | |
1524 | int pdc_pat_io_pci_cfg_write(unsigned long pci_addr, int pci_size, u32 val) | |
1525 | { | |
1526 | int retval; | |
09690b18 | 1527 | unsigned long flags; |
1da177e4 | 1528 | |
09690b18 | 1529 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1530 | retval = mem_pdc_call(PDC_PAT_IO, PDC_PAT_IO_PCI_CONFIG_WRITE, |
1531 | pci_addr, pci_size, val); | |
09690b18 | 1532 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1533 | |
1534 | return retval; | |
1535 | } | |
c9c2877d HD |
1536 | |
1537 | /** | |
1538 | * pdc_pat_mem_pdc_info - Retrieve information about page deallocation table | |
1539 | * @rinfo: memory pdt information | |
1540 | * | |
1541 | */ | |
1542 | int pdc_pat_mem_pdt_info(struct pdc_pat_mem_retinfo *rinfo) | |
1543 | { | |
1544 | int retval; | |
1545 | unsigned long flags; | |
1546 | ||
1547 | spin_lock_irqsave(&pdc_lock, flags); | |
1548 | retval = mem_pdc_call(PDC_PAT_MEM, PDC_PAT_MEM_PD_INFO, | |
1549 | __pa(&pdc_result)); | |
1550 | if (retval == PDC_OK) | |
1551 | memcpy(rinfo, &pdc_result, sizeof(*rinfo)); | |
1552 | spin_unlock_irqrestore(&pdc_lock, flags); | |
1553 | ||
1554 | return retval; | |
1555 | } | |
1556 | ||
8a5aa00e HD |
1557 | /** |
1558 | * pdc_pat_mem_pdt_cell_info - Retrieve information about page deallocation | |
1559 | * table of a cell | |
1560 | * @rinfo: memory pdt information | |
1561 | * @cell: cell number | |
1562 | * | |
1563 | */ | |
1564 | int pdc_pat_mem_pdt_cell_info(struct pdc_pat_mem_cell_pdt_retinfo *rinfo, | |
1565 | unsigned long cell) | |
1566 | { | |
1567 | int retval; | |
1568 | unsigned long flags; | |
1569 | ||
1570 | spin_lock_irqsave(&pdc_lock, flags); | |
1571 | retval = mem_pdc_call(PDC_PAT_MEM, PDC_PAT_MEM_CELL_INFO, | |
1572 | __pa(&pdc_result), cell); | |
1573 | if (retval == PDC_OK) | |
1574 | memcpy(rinfo, &pdc_result, sizeof(*rinfo)); | |
1575 | spin_unlock_irqrestore(&pdc_lock, flags); | |
1576 | ||
1577 | return retval; | |
1578 | } | |
1579 | ||
c9c2877d HD |
1580 | /** |
1581 | * pdc_pat_mem_read_cell_pdt - Read PDT entries from (old) PAT firmware | |
1582 | * @pret: array of PDT entries | |
1583 | * @pdt_entries_ptr: ptr to hold number of PDT entries | |
1584 | * @max_entries: maximum number of entries to be read | |
1585 | * | |
1586 | */ | |
1587 | int pdc_pat_mem_read_cell_pdt(struct pdc_pat_mem_read_pd_retinfo *pret, | |
1588 | unsigned long *pdt_entries_ptr, unsigned long max_entries) | |
1589 | { | |
1590 | int retval; | |
1591 | unsigned long flags, entries; | |
1592 | ||
1593 | spin_lock_irqsave(&pdc_lock, flags); | |
1594 | /* PDC_PAT_MEM_CELL_READ is available on early PAT machines only */ | |
1595 | retval = mem_pdc_call(PDC_PAT_MEM, PDC_PAT_MEM_CELL_READ, | |
8a5aa00e HD |
1596 | __pa(&pdc_result), parisc_cell_num, |
1597 | __pa(pdt_entries_ptr)); | |
c9c2877d HD |
1598 | |
1599 | if (retval == PDC_OK) { | |
1600 | /* build up return value as for PDC_PAT_MEM_PD_READ */ | |
1601 | entries = min(pdc_result[0], max_entries); | |
1602 | pret->pdt_entries = entries; | |
1603 | pret->actual_count_bytes = entries * sizeof(unsigned long); | |
c9c2877d HD |
1604 | } |
1605 | ||
1606 | spin_unlock_irqrestore(&pdc_lock, flags); | |
1607 | WARN_ON(retval == PDC_OK && pdc_result[0] > max_entries); | |
1608 | ||
1609 | return retval; | |
1610 | } | |
1611 | /** | |
1612 | * pdc_pat_mem_read_pd_pdt - Read PDT entries from (newer) PAT firmware | |
1613 | * @pret: array of PDT entries | |
1614 | * @pdt_entries_ptr: ptr to hold number of PDT entries | |
8a5aa00e HD |
1615 | * @count: number of bytes to read |
1616 | * @offset: offset to start (in bytes) | |
c9c2877d HD |
1617 | * |
1618 | */ | |
1619 | int pdc_pat_mem_read_pd_pdt(struct pdc_pat_mem_read_pd_retinfo *pret, | |
1620 | unsigned long *pdt_entries_ptr, unsigned long count, | |
1621 | unsigned long offset) | |
1622 | { | |
1623 | int retval; | |
f520e552 | 1624 | unsigned long flags, entries; |
c9c2877d HD |
1625 | |
1626 | spin_lock_irqsave(&pdc_lock, flags); | |
1627 | retval = mem_pdc_call(PDC_PAT_MEM, PDC_PAT_MEM_PD_READ, | |
f520e552 | 1628 | __pa(&pdc_result), __pa(pdt_entries_ptr), |
c9c2877d | 1629 | count, offset); |
f520e552 HD |
1630 | |
1631 | if (retval == PDC_OK) { | |
1632 | entries = min(pdc_result[0], count); | |
1633 | pret->actual_count_bytes = entries; | |
1634 | pret->pdt_entries = entries / sizeof(unsigned long); | |
1635 | } | |
1636 | ||
c9c2877d HD |
1637 | spin_unlock_irqrestore(&pdc_lock, flags); |
1638 | ||
1639 | return retval; | |
1640 | } | |
25a9b765 HD |
1641 | |
1642 | /** | |
1643 | * pdc_pat_mem_get_dimm_phys_location - Get physical DIMM slot via PAT firmware | |
1644 | * @pret: ptr to hold returned information | |
1645 | * @phys_addr: physical address to examine | |
1646 | * | |
1647 | */ | |
1648 | int pdc_pat_mem_get_dimm_phys_location( | |
1649 | struct pdc_pat_mem_phys_mem_location *pret, | |
1650 | unsigned long phys_addr) | |
1651 | { | |
1652 | int retval; | |
1653 | unsigned long flags; | |
1654 | ||
1655 | spin_lock_irqsave(&pdc_lock, flags); | |
1656 | retval = mem_pdc_call(PDC_PAT_MEM, PDC_PAT_MEM_ADDRESS, | |
1657 | __pa(&pdc_result), phys_addr); | |
1658 | ||
1659 | if (retval == PDC_OK) | |
1660 | memcpy(pret, &pdc_result, sizeof(*pret)); | |
1661 | ||
1662 | spin_unlock_irqrestore(&pdc_lock, flags); | |
1663 | ||
1664 | return retval; | |
1665 | } | |
a8f44e38 | 1666 | #endif /* CONFIG_64BIT */ |
f5213b2c | 1667 | #endif /* defined(BOOTLOADER) */ |
1da177e4 LT |
1668 | |
1669 | ||
1670 | /***************** 32-bit real-mode calls ***********/ | |
1671 | /* The struct below is used | |
1672 | * to overlay real_stack (real2.S), preparing a 32-bit call frame. | |
1673 | * real32_call_asm() then uses this stack in narrow real mode | |
1674 | */ | |
1675 | ||
1676 | struct narrow_stack { | |
1677 | /* use int, not long which is 64 bits */ | |
1678 | unsigned int arg13; | |
1679 | unsigned int arg12; | |
1680 | unsigned int arg11; | |
1681 | unsigned int arg10; | |
1682 | unsigned int arg9; | |
1683 | unsigned int arg8; | |
1684 | unsigned int arg7; | |
1685 | unsigned int arg6; | |
1686 | unsigned int arg5; | |
1687 | unsigned int arg4; | |
1688 | unsigned int arg3; | |
1689 | unsigned int arg2; | |
1690 | unsigned int arg1; | |
1691 | unsigned int arg0; | |
1692 | unsigned int frame_marker[8]; | |
1693 | unsigned int sp; | |
1694 | /* in reality, there's nearly 8k of stack after this */ | |
1695 | }; | |
1696 | ||
1697 | long real32_call(unsigned long fn, ...) | |
1698 | { | |
1699 | va_list args; | |
1700 | extern struct narrow_stack real_stack; | |
1701 | extern unsigned long real32_call_asm(unsigned int *, | |
1702 | unsigned int *, | |
1703 | unsigned int); | |
1704 | ||
1705 | va_start(args, fn); | |
1706 | real_stack.arg0 = va_arg(args, unsigned int); | |
1707 | real_stack.arg1 = va_arg(args, unsigned int); | |
1708 | real_stack.arg2 = va_arg(args, unsigned int); | |
1709 | real_stack.arg3 = va_arg(args, unsigned int); | |
1710 | real_stack.arg4 = va_arg(args, unsigned int); | |
1711 | real_stack.arg5 = va_arg(args, unsigned int); | |
1712 | real_stack.arg6 = va_arg(args, unsigned int); | |
1713 | real_stack.arg7 = va_arg(args, unsigned int); | |
1714 | real_stack.arg8 = va_arg(args, unsigned int); | |
1715 | real_stack.arg9 = va_arg(args, unsigned int); | |
1716 | real_stack.arg10 = va_arg(args, unsigned int); | |
1717 | real_stack.arg11 = va_arg(args, unsigned int); | |
1718 | real_stack.arg12 = va_arg(args, unsigned int); | |
1719 | real_stack.arg13 = va_arg(args, unsigned int); | |
1720 | va_end(args); | |
1721 | ||
1722 | return real32_call_asm(&real_stack.sp, &real_stack.arg0, fn); | |
1723 | } | |
1724 | ||
a8f44e38 | 1725 | #ifdef CONFIG_64BIT |
1da177e4 LT |
1726 | /***************** 64-bit real-mode calls ***********/ |
1727 | ||
1728 | struct wide_stack { | |
1729 | unsigned long arg0; | |
1730 | unsigned long arg1; | |
1731 | unsigned long arg2; | |
1732 | unsigned long arg3; | |
1733 | unsigned long arg4; | |
1734 | unsigned long arg5; | |
1735 | unsigned long arg6; | |
1736 | unsigned long arg7; | |
1737 | unsigned long arg8; | |
1738 | unsigned long arg9; | |
1739 | unsigned long arg10; | |
1740 | unsigned long arg11; | |
1741 | unsigned long arg12; | |
1742 | unsigned long arg13; | |
1743 | unsigned long frame_marker[2]; /* rp, previous sp */ | |
1744 | unsigned long sp; | |
1745 | /* in reality, there's nearly 8k of stack after this */ | |
1746 | }; | |
1747 | ||
1748 | long real64_call(unsigned long fn, ...) | |
1749 | { | |
1750 | va_list args; | |
1751 | extern struct wide_stack real64_stack; | |
1752 | extern unsigned long real64_call_asm(unsigned long *, | |
1753 | unsigned long *, | |
1754 | unsigned long); | |
1755 | ||
1756 | va_start(args, fn); | |
1757 | real64_stack.arg0 = va_arg(args, unsigned long); | |
1758 | real64_stack.arg1 = va_arg(args, unsigned long); | |
1759 | real64_stack.arg2 = va_arg(args, unsigned long); | |
1760 | real64_stack.arg3 = va_arg(args, unsigned long); | |
1761 | real64_stack.arg4 = va_arg(args, unsigned long); | |
1762 | real64_stack.arg5 = va_arg(args, unsigned long); | |
1763 | real64_stack.arg6 = va_arg(args, unsigned long); | |
1764 | real64_stack.arg7 = va_arg(args, unsigned long); | |
1765 | real64_stack.arg8 = va_arg(args, unsigned long); | |
1766 | real64_stack.arg9 = va_arg(args, unsigned long); | |
1767 | real64_stack.arg10 = va_arg(args, unsigned long); | |
1768 | real64_stack.arg11 = va_arg(args, unsigned long); | |
1769 | real64_stack.arg12 = va_arg(args, unsigned long); | |
1770 | real64_stack.arg13 = va_arg(args, unsigned long); | |
1771 | va_end(args); | |
1772 | ||
1773 | return real64_call_asm(&real64_stack.sp, &real64_stack.arg0, fn); | |
1774 | } | |
1775 | ||
a8f44e38 | 1776 | #endif /* CONFIG_64BIT */ |