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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 | * | |
861e93cf HD |
7 | * See PDC documentation at |
8 | * https://parisc.wiki.kernel.org/index.php/Technical_Documentation | |
1da177e4 LT |
9 | * for documentation describing the entry points and calling |
10 | * conventions defined below. | |
11 | * | |
12 | * Copyright 1999 SuSE GmbH Nuernberg (Philipp Rumpf, prumpf@tux.org) | |
13 | * Copyright 1999 The Puffin Group, (Alex deVries, David Kennedy) | |
14 | * Copyright 2003 Grant Grundler <grundler parisc-linux org> | |
15 | * Copyright 2003,2004 Ryan Bradetich <rbrad@parisc-linux.org> | |
8ffaeaf4 | 16 | * Copyright 2004,2006 Thibaut VARENE <varenet@parisc-linux.org> |
1da177e4 LT |
17 | */ |
18 | ||
19 | /* I think it would be in everyone's best interest to follow this | |
20 | * guidelines when writing PDC wrappers: | |
21 | * | |
22 | * - the name of the pdc wrapper should match one of the macros | |
23 | * used for the first two arguments | |
24 | * - don't use caps for random parts of the name | |
25 | * - use the static PDC result buffers and "copyout" to structs | |
26 | * supplied by the caller to encapsulate alignment restrictions | |
27 | * - hold pdc_lock while in PDC or using static result buffers | |
28 | * - use __pa() to convert virtual (kernel) pointers to physical | |
29 | * ones. | |
30 | * - the name of the struct used for pdc return values should equal | |
31 | * one of the macros used for the first two arguments to the | |
32 | * corresponding PDC call | |
33 | * - keep the order of arguments | |
34 | * - don't be smart (setting trailing NUL bytes for strings, return | |
35 | * something useful even if the call failed) unless you are sure | |
36 | * it's not going to affect functionality or performance | |
37 | * | |
38 | * Example: | |
39 | * int pdc_cache_info(struct pdc_cache_info *cache_info ) | |
40 | * { | |
41 | * int retval; | |
42 | * | |
43 | * spin_lock_irq(&pdc_lock); | |
44 | * retval = mem_pdc_call(PDC_CACHE,PDC_CACHE_INFO,__pa(cache_info),0); | |
45 | * convert_to_wide(pdc_result); | |
46 | * memcpy(cache_info, pdc_result, sizeof(*cache_info)); | |
47 | * spin_unlock_irq(&pdc_lock); | |
48 | * | |
49 | * return retval; | |
50 | * } | |
51 | * prumpf 991016 | |
52 | */ | |
53 | ||
c0891ac1 | 54 | #include <linux/stdarg.h> |
1da177e4 LT |
55 | |
56 | #include <linux/delay.h> | |
57 | #include <linux/init.h> | |
58 | #include <linux/kernel.h> | |
59 | #include <linux/module.h> | |
60 | #include <linux/string.h> | |
61 | #include <linux/spinlock.h> | |
62 | ||
63 | #include <asm/page.h> | |
64 | #include <asm/pdc.h> | |
65 | #include <asm/pdcpat.h> | |
1da177e4 LT |
66 | #include <asm/processor.h> /* for boot_cpu_data */ |
67 | ||
f5213b2c HD |
68 | #if defined(BOOTLOADER) |
69 | # undef spin_lock_irqsave | |
70 | # define spin_lock_irqsave(a, b) { b = 1; } | |
71 | # undef spin_unlock_irqrestore | |
72 | # define spin_unlock_irqrestore(a, b) | |
73 | #else | |
1da177e4 | 74 | static DEFINE_SPINLOCK(pdc_lock); |
f5213b2c HD |
75 | #endif |
76 | ||
6c86cb82 KM |
77 | extern unsigned long pdc_result[NUM_PDC_RESULT]; |
78 | extern unsigned long pdc_result2[NUM_PDC_RESULT]; | |
1da177e4 | 79 | |
a8f44e38 | 80 | #ifdef CONFIG_64BIT |
1da177e4 LT |
81 | #define WIDE_FIRMWARE 0x1 |
82 | #define NARROW_FIRMWARE 0x2 | |
83 | ||
84 | /* Firmware needs to be initially set to narrow to determine the | |
85 | * actual firmware width. */ | |
1b69085d | 86 | int parisc_narrow_firmware __ro_after_init = 1; |
1da177e4 LT |
87 | #endif |
88 | ||
675ec7a5 GG |
89 | /* On most currently-supported platforms, IODC I/O calls are 32-bit calls |
90 | * and MEM_PDC calls are always the same width as the OS. | |
91 | * Some PAT boxes may have 64-bit IODC I/O. | |
1da177e4 | 92 | * |
675ec7a5 GG |
93 | * Ryan Bradetich added the now obsolete CONFIG_PDC_NARROW to allow |
94 | * 64-bit kernels to run on systems with 32-bit MEM_PDC calls. | |
95 | * This allowed wide kernels to run on Cxxx boxes. | |
96 | * We now detect 32-bit-only PDC and dynamically switch to 32-bit mode | |
97 | * when running a 64-bit kernel on such boxes (e.g. C200 or C360). | |
1da177e4 LT |
98 | */ |
99 | ||
a8f44e38 | 100 | #ifdef CONFIG_64BIT |
1da177e4 LT |
101 | long real64_call(unsigned long function, ...); |
102 | #endif | |
103 | long real32_call(unsigned long function, ...); | |
104 | ||
a8f44e38 | 105 | #ifdef CONFIG_64BIT |
1da177e4 LT |
106 | # define MEM_PDC (unsigned long)(PAGE0->mem_pdc_hi) << 32 | PAGE0->mem_pdc |
107 | # define mem_pdc_call(args...) unlikely(parisc_narrow_firmware) ? real32_call(MEM_PDC, args) : real64_call(MEM_PDC, args) | |
108 | #else | |
109 | # define MEM_PDC (unsigned long)PAGE0->mem_pdc | |
110 | # define mem_pdc_call(args...) real32_call(MEM_PDC, args) | |
111 | #endif | |
112 | ||
113 | ||
114 | /** | |
115 | * f_extend - Convert PDC addresses to kernel addresses. | |
116 | * @address: Address returned from PDC. | |
117 | * | |
118 | * This function is used to convert PDC addresses into kernel addresses | |
119 | * when the PDC address size and kernel address size are different. | |
120 | */ | |
121 | static unsigned long f_extend(unsigned long address) | |
122 | { | |
a8f44e38 | 123 | #ifdef CONFIG_64BIT |
1da177e4 LT |
124 | if(unlikely(parisc_narrow_firmware)) { |
125 | if((address & 0xff000000) == 0xf0000000) | |
126 | return 0xf0f0f0f000000000UL | (u32)address; | |
127 | ||
128 | if((address & 0xf0000000) == 0xf0000000) | |
129 | return 0xffffffff00000000UL | (u32)address; | |
130 | } | |
131 | #endif | |
132 | return address; | |
133 | } | |
134 | ||
135 | /** | |
136 | * convert_to_wide - Convert the return buffer addresses into kernel addresses. | |
137 | * @address: The return buffer from PDC. | |
138 | * | |
139 | * This function is used to convert the return buffer addresses retrieved from PDC | |
140 | * into kernel addresses when the PDC address size and kernel address size are | |
141 | * different. | |
142 | */ | |
143 | static void convert_to_wide(unsigned long *addr) | |
144 | { | |
a8f44e38 | 145 | #ifdef CONFIG_64BIT |
1da177e4 LT |
146 | int i; |
147 | unsigned int *p = (unsigned int *)addr; | |
148 | ||
8a5aa00e HD |
149 | if (unlikely(parisc_narrow_firmware)) { |
150 | for (i = (NUM_PDC_RESULT-1); i >= 0; --i) | |
1da177e4 LT |
151 | addr[i] = p[i]; |
152 | } | |
153 | #endif | |
154 | } | |
155 | ||
24b574d0 | 156 | #ifdef CONFIG_64BIT |
60ffef06 | 157 | void set_firmware_width_unlocked(void) |
24b574d0 KM |
158 | { |
159 | int ret; | |
160 | ||
161 | ret = mem_pdc_call(PDC_MODEL, PDC_MODEL_CAPABILITIES, | |
162 | __pa(pdc_result), 0); | |
163 | convert_to_wide(pdc_result); | |
164 | if (pdc_result[0] != NARROW_FIRMWARE) | |
165 | parisc_narrow_firmware = 0; | |
166 | } | |
167 | ||
1da177e4 LT |
168 | /** |
169 | * set_firmware_width - Determine if the firmware is wide or narrow. | |
170 | * | |
24b574d0 KM |
171 | * This function must be called before any pdc_* function that uses the |
172 | * convert_to_wide function. | |
1da177e4 | 173 | */ |
60ffef06 | 174 | void set_firmware_width(void) |
1da177e4 | 175 | { |
09690b18 | 176 | unsigned long flags; |
24b574d0 KM |
177 | spin_lock_irqsave(&pdc_lock, flags); |
178 | set_firmware_width_unlocked(); | |
179 | spin_unlock_irqrestore(&pdc_lock, flags); | |
180 | } | |
181 | #else | |
60ffef06 PG |
182 | void set_firmware_width_unlocked(void) |
183 | { | |
24b574d0 KM |
184 | return; |
185 | } | |
1da177e4 | 186 | |
60ffef06 PG |
187 | void set_firmware_width(void) |
188 | { | |
24b574d0 | 189 | return; |
1da177e4 | 190 | } |
24b574d0 | 191 | #endif /*CONFIG_64BIT*/ |
1da177e4 | 192 | |
f5213b2c HD |
193 | |
194 | #if !defined(BOOTLOADER) | |
1da177e4 LT |
195 | /** |
196 | * pdc_emergency_unlock - Unlock the linux pdc lock | |
197 | * | |
198 | * This call unlocks the linux pdc lock in case we need some PDC functions | |
199 | * (like pdc_add_valid) during kernel stack dump. | |
200 | */ | |
201 | void pdc_emergency_unlock(void) | |
202 | { | |
203 | /* Spinlock DEBUG code freaks out if we unconditionally unlock */ | |
204 | if (spin_is_locked(&pdc_lock)) | |
205 | spin_unlock(&pdc_lock); | |
206 | } | |
207 | ||
208 | ||
209 | /** | |
210 | * pdc_add_valid - Verify address can be accessed without causing a HPMC. | |
211 | * @address: Address to be verified. | |
212 | * | |
213 | * This PDC call attempts to read from the specified address and verifies | |
214 | * if the address is valid. | |
215 | * | |
216 | * The return value is PDC_OK (0) in case accessing this address is valid. | |
217 | */ | |
218 | int pdc_add_valid(unsigned long address) | |
219 | { | |
220 | int retval; | |
09690b18 | 221 | unsigned long flags; |
1da177e4 | 222 | |
09690b18 | 223 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 | 224 | retval = mem_pdc_call(PDC_ADD_VALID, PDC_ADD_VALID_VERIFY, address); |
09690b18 | 225 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
226 | |
227 | return retval; | |
228 | } | |
229 | EXPORT_SYMBOL(pdc_add_valid); | |
230 | ||
77089c52 HD |
231 | /** |
232 | * pdc_instr - Get instruction that invokes PDCE_CHECK in HPMC handler. | |
233 | * @instr: Pointer to variable which will get instruction opcode. | |
234 | * | |
235 | * The return value is PDC_OK (0) in case call succeeded. | |
236 | */ | |
237 | int __init pdc_instr(unsigned int *instr) | |
238 | { | |
239 | int retval; | |
240 | unsigned long flags; | |
241 | ||
242 | spin_lock_irqsave(&pdc_lock, flags); | |
243 | retval = mem_pdc_call(PDC_INSTR, 0UL, __pa(pdc_result)); | |
244 | convert_to_wide(pdc_result); | |
245 | *instr = pdc_result[0]; | |
246 | spin_unlock_irqrestore(&pdc_lock, flags); | |
247 | ||
248 | return retval; | |
249 | } | |
250 | ||
1da177e4 LT |
251 | /** |
252 | * pdc_chassis_info - Return chassis information. | |
253 | * @result: The return buffer. | |
254 | * @chassis_info: The memory buffer address. | |
255 | * @len: The size of the memory buffer address. | |
256 | * | |
257 | * An HVERSION dependent call for returning the chassis information. | |
258 | */ | |
259 | int __init pdc_chassis_info(struct pdc_chassis_info *chassis_info, void *led_info, unsigned long len) | |
260 | { | |
261 | int retval; | |
09690b18 | 262 | unsigned long flags; |
1da177e4 | 263 | |
09690b18 | 264 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
265 | memcpy(&pdc_result, chassis_info, sizeof(*chassis_info)); |
266 | memcpy(&pdc_result2, led_info, len); | |
267 | retval = mem_pdc_call(PDC_CHASSIS, PDC_RETURN_CHASSIS_INFO, | |
268 | __pa(pdc_result), __pa(pdc_result2), len); | |
269 | memcpy(chassis_info, pdc_result, sizeof(*chassis_info)); | |
270 | memcpy(led_info, pdc_result2, len); | |
09690b18 | 271 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
272 | |
273 | return retval; | |
274 | } | |
275 | ||
276 | /** | |
277 | * pdc_pat_chassis_send_log - Sends a PDC PAT CHASSIS log message. | |
278 | * @retval: -1 on error, 0 on success. Other value are PDC errors | |
279 | * | |
280 | * Must be correctly formatted or expect system crash | |
281 | */ | |
a8f44e38 | 282 | #ifdef CONFIG_64BIT |
1da177e4 LT |
283 | int pdc_pat_chassis_send_log(unsigned long state, unsigned long data) |
284 | { | |
285 | int retval = 0; | |
09690b18 | 286 | unsigned long flags; |
1da177e4 LT |
287 | |
288 | if (!is_pdc_pat()) | |
289 | return -1; | |
290 | ||
09690b18 | 291 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 | 292 | retval = mem_pdc_call(PDC_PAT_CHASSIS_LOG, PDC_PAT_CHASSIS_WRITE_LOG, __pa(&state), __pa(&data)); |
09690b18 | 293 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
294 | |
295 | return retval; | |
296 | } | |
297 | #endif | |
298 | ||
299 | /** | |
8ffaeaf4 | 300 | * pdc_chassis_disp - Updates chassis code |
1da177e4 | 301 | * @retval: -1 on error, 0 on success |
1da177e4 LT |
302 | */ |
303 | int pdc_chassis_disp(unsigned long disp) | |
304 | { | |
305 | int retval = 0; | |
09690b18 | 306 | unsigned long flags; |
1da177e4 | 307 | |
09690b18 | 308 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 | 309 | retval = mem_pdc_call(PDC_CHASSIS, PDC_CHASSIS_DISP, disp); |
09690b18 | 310 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
311 | |
312 | return retval; | |
313 | } | |
314 | ||
507efd63 SS |
315 | /** |
316 | * pdc_cpu_rendenzvous - Stop currently executing CPU | |
317 | * @retval: -1 on error, 0 on success | |
318 | */ | |
319 | int __pdc_cpu_rendezvous(void) | |
320 | { | |
321 | if (is_pdc_pat()) | |
322 | return mem_pdc_call(PDC_PAT_CPU, PDC_PAT_CPU_RENDEZVOUS); | |
323 | else | |
324 | return mem_pdc_call(PDC_PROC, 1, 0); | |
325 | } | |
326 | ||
327 | ||
8ffaeaf4 TV |
328 | /** |
329 | * pdc_chassis_warn - Fetches chassis warnings | |
330 | * @retval: -1 on error, 0 on success | |
331 | */ | |
332 | int pdc_chassis_warn(unsigned long *warn) | |
333 | { | |
334 | int retval = 0; | |
09690b18 | 335 | unsigned long flags; |
8ffaeaf4 | 336 | |
09690b18 | 337 | spin_lock_irqsave(&pdc_lock, flags); |
8ffaeaf4 TV |
338 | retval = mem_pdc_call(PDC_CHASSIS, PDC_CHASSIS_WARN, __pa(pdc_result)); |
339 | *warn = pdc_result[0]; | |
09690b18 | 340 | spin_unlock_irqrestore(&pdc_lock, flags); |
8ffaeaf4 TV |
341 | |
342 | return retval; | |
343 | } | |
344 | ||
60ffef06 | 345 | int pdc_coproc_cfg_unlocked(struct pdc_coproc_cfg *pdc_coproc_info) |
24b574d0 KM |
346 | { |
347 | int ret; | |
348 | ||
349 | ret = mem_pdc_call(PDC_COPROC, PDC_COPROC_CFG, __pa(pdc_result)); | |
350 | convert_to_wide(pdc_result); | |
351 | pdc_coproc_info->ccr_functional = pdc_result[0]; | |
352 | pdc_coproc_info->ccr_present = pdc_result[1]; | |
353 | pdc_coproc_info->revision = pdc_result[17]; | |
354 | pdc_coproc_info->model = pdc_result[18]; | |
355 | ||
356 | return ret; | |
357 | } | |
358 | ||
1da177e4 LT |
359 | /** |
360 | * pdc_coproc_cfg - To identify coprocessors attached to the processor. | |
361 | * @pdc_coproc_info: Return buffer address. | |
362 | * | |
363 | * This PDC call returns the presence and status of all the coprocessors | |
364 | * attached to the processor. | |
365 | */ | |
60ffef06 | 366 | int pdc_coproc_cfg(struct pdc_coproc_cfg *pdc_coproc_info) |
1da177e4 | 367 | { |
24b574d0 | 368 | int ret; |
09690b18 | 369 | unsigned long flags; |
1da177e4 | 370 | |
24b574d0 KM |
371 | spin_lock_irqsave(&pdc_lock, flags); |
372 | ret = pdc_coproc_cfg_unlocked(pdc_coproc_info); | |
373 | spin_unlock_irqrestore(&pdc_lock, flags); | |
1da177e4 | 374 | |
24b574d0 | 375 | return ret; |
1da177e4 LT |
376 | } |
377 | ||
378 | /** | |
379 | * pdc_iodc_read - Read data from the modules IODC. | |
380 | * @actcnt: The actual number of bytes. | |
381 | * @hpa: The HPA of the module for the iodc read. | |
382 | * @index: The iodc entry point. | |
383 | * @iodc_data: A buffer memory for the iodc options. | |
384 | * @iodc_data_size: Size of the memory buffer. | |
385 | * | |
386 | * This PDC call reads from the IODC of the module specified by the hpa | |
387 | * argument. | |
388 | */ | |
389 | int pdc_iodc_read(unsigned long *actcnt, unsigned long hpa, unsigned int index, | |
390 | void *iodc_data, unsigned int iodc_data_size) | |
391 | { | |
392 | int retval; | |
09690b18 | 393 | unsigned long flags; |
1da177e4 | 394 | |
09690b18 | 395 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
396 | retval = mem_pdc_call(PDC_IODC, PDC_IODC_READ, __pa(pdc_result), hpa, |
397 | index, __pa(pdc_result2), iodc_data_size); | |
398 | convert_to_wide(pdc_result); | |
399 | *actcnt = pdc_result[0]; | |
400 | memcpy(iodc_data, pdc_result2, iodc_data_size); | |
09690b18 | 401 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
402 | |
403 | return retval; | |
404 | } | |
405 | EXPORT_SYMBOL(pdc_iodc_read); | |
406 | ||
407 | /** | |
408 | * pdc_system_map_find_mods - Locate unarchitected modules. | |
409 | * @pdc_mod_info: Return buffer address. | |
410 | * @mod_path: pointer to dev path structure. | |
411 | * @mod_index: fixed address module index. | |
412 | * | |
413 | * To locate and identify modules which reside at fixed I/O addresses, which | |
414 | * do not self-identify via architected bus walks. | |
415 | */ | |
416 | int pdc_system_map_find_mods(struct pdc_system_map_mod_info *pdc_mod_info, | |
417 | struct pdc_module_path *mod_path, long mod_index) | |
418 | { | |
419 | int retval; | |
09690b18 | 420 | unsigned long flags; |
1da177e4 | 421 | |
09690b18 | 422 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
423 | retval = mem_pdc_call(PDC_SYSTEM_MAP, PDC_FIND_MODULE, __pa(pdc_result), |
424 | __pa(pdc_result2), mod_index); | |
425 | convert_to_wide(pdc_result); | |
426 | memcpy(pdc_mod_info, pdc_result, sizeof(*pdc_mod_info)); | |
427 | memcpy(mod_path, pdc_result2, sizeof(*mod_path)); | |
09690b18 | 428 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
429 | |
430 | pdc_mod_info->mod_addr = f_extend(pdc_mod_info->mod_addr); | |
431 | return retval; | |
432 | } | |
433 | ||
434 | /** | |
435 | * pdc_system_map_find_addrs - Retrieve additional address ranges. | |
436 | * @pdc_addr_info: Return buffer address. | |
437 | * @mod_index: Fixed address module index. | |
438 | * @addr_index: Address range index. | |
439 | * | |
440 | * Retrieve additional information about subsequent address ranges for modules | |
441 | * with multiple address ranges. | |
442 | */ | |
443 | int pdc_system_map_find_addrs(struct pdc_system_map_addr_info *pdc_addr_info, | |
444 | long mod_index, long addr_index) | |
445 | { | |
446 | int retval; | |
09690b18 | 447 | unsigned long flags; |
1da177e4 | 448 | |
09690b18 | 449 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
450 | retval = mem_pdc_call(PDC_SYSTEM_MAP, PDC_FIND_ADDRESS, __pa(pdc_result), |
451 | mod_index, addr_index); | |
452 | convert_to_wide(pdc_result); | |
453 | memcpy(pdc_addr_info, pdc_result, sizeof(*pdc_addr_info)); | |
09690b18 | 454 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
455 | |
456 | pdc_addr_info->mod_addr = f_extend(pdc_addr_info->mod_addr); | |
457 | return retval; | |
458 | } | |
459 | ||
460 | /** | |
461 | * pdc_model_info - Return model information about the processor. | |
462 | * @model: The return buffer. | |
463 | * | |
464 | * Returns the version numbers, identifiers, and capabilities from the processor module. | |
465 | */ | |
466 | int pdc_model_info(struct pdc_model *model) | |
467 | { | |
468 | int retval; | |
09690b18 | 469 | unsigned long flags; |
1da177e4 | 470 | |
09690b18 | 471 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
472 | retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_INFO, __pa(pdc_result), 0); |
473 | convert_to_wide(pdc_result); | |
474 | memcpy(model, pdc_result, sizeof(*model)); | |
09690b18 | 475 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
476 | |
477 | return retval; | |
478 | } | |
479 | ||
480 | /** | |
481 | * pdc_model_sysmodel - Get the system model name. | |
482 | * @name: A char array of at least 81 characters. | |
483 | * | |
ec1fdc24 KM |
484 | * Get system model name from PDC ROM (e.g. 9000/715 or 9000/778/B160L). |
485 | * Using OS_ID_HPUX will return the equivalent of the 'modelname' command | |
486 | * on HP/UX. | |
1da177e4 LT |
487 | */ |
488 | int pdc_model_sysmodel(char *name) | |
489 | { | |
490 | int retval; | |
09690b18 | 491 | unsigned long flags; |
1da177e4 | 492 | |
09690b18 | 493 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
494 | retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_SYSMODEL, __pa(pdc_result), |
495 | OS_ID_HPUX, __pa(name)); | |
496 | convert_to_wide(pdc_result); | |
497 | ||
498 | if (retval == PDC_OK) { | |
499 | name[pdc_result[0]] = '\0'; /* add trailing '\0' */ | |
500 | } else { | |
501 | name[0] = 0; | |
502 | } | |
09690b18 | 503 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
504 | |
505 | return retval; | |
506 | } | |
507 | ||
508 | /** | |
509 | * pdc_model_versions - Identify the version number of each processor. | |
510 | * @cpu_id: The return buffer. | |
511 | * @id: The id of the processor to check. | |
512 | * | |
513 | * Returns the version number for each processor component. | |
514 | * | |
515 | * This comment was here before, but I do not know what it means :( -RB | |
516 | * id: 0 = cpu revision, 1 = boot-rom-version | |
517 | */ | |
518 | int pdc_model_versions(unsigned long *versions, int id) | |
519 | { | |
520 | int retval; | |
09690b18 | 521 | unsigned long flags; |
1da177e4 | 522 | |
09690b18 | 523 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
524 | retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_VERSIONS, __pa(pdc_result), id); |
525 | convert_to_wide(pdc_result); | |
526 | *versions = pdc_result[0]; | |
09690b18 | 527 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
528 | |
529 | return retval; | |
530 | } | |
531 | ||
532 | /** | |
533 | * pdc_model_cpuid - Returns the CPU_ID. | |
534 | * @cpu_id: The return buffer. | |
535 | * | |
536 | * Returns the CPU_ID value which uniquely identifies the cpu portion of | |
537 | * the processor module. | |
538 | */ | |
539 | int pdc_model_cpuid(unsigned long *cpu_id) | |
540 | { | |
541 | int retval; | |
09690b18 | 542 | unsigned long flags; |
1da177e4 | 543 | |
09690b18 | 544 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
545 | pdc_result[0] = 0; /* preset zero (call may not be implemented!) */ |
546 | retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_CPU_ID, __pa(pdc_result), 0); | |
547 | convert_to_wide(pdc_result); | |
548 | *cpu_id = pdc_result[0]; | |
09690b18 | 549 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
550 | |
551 | return retval; | |
552 | } | |
553 | ||
554 | /** | |
555 | * pdc_model_capabilities - Returns the platform capabilities. | |
556 | * @capabilities: The return buffer. | |
557 | * | |
558 | * Returns information about platform support for 32- and/or 64-bit | |
559 | * OSes, IO-PDIR coherency, and virtual aliasing. | |
560 | */ | |
561 | int pdc_model_capabilities(unsigned long *capabilities) | |
562 | { | |
563 | int retval; | |
09690b18 | 564 | unsigned long flags; |
1da177e4 | 565 | |
09690b18 | 566 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
567 | pdc_result[0] = 0; /* preset zero (call may not be implemented!) */ |
568 | retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_CAPABILITIES, __pa(pdc_result), 0); | |
569 | convert_to_wide(pdc_result); | |
445c088f CW |
570 | if (retval == PDC_OK) { |
571 | *capabilities = pdc_result[0]; | |
572 | } else { | |
573 | *capabilities = PDC_MODEL_OS32; | |
574 | } | |
09690b18 | 575 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
576 | |
577 | return retval; | |
578 | } | |
579 | ||
8207d4ee HD |
580 | /** |
581 | * pdc_model_platform_info - Returns machine product and serial number. | |
582 | * @orig_prod_num: Return buffer for original product number. | |
583 | * @current_prod_num: Return buffer for current product number. | |
584 | * @serial_no: Return buffer for serial number. | |
585 | * | |
586 | * Returns strings containing the original and current product numbers and the | |
587 | * serial number of the system. | |
588 | */ | |
589 | int pdc_model_platform_info(char *orig_prod_num, char *current_prod_num, | |
590 | char *serial_no) | |
591 | { | |
592 | int retval; | |
593 | unsigned long flags; | |
594 | ||
595 | spin_lock_irqsave(&pdc_lock, flags); | |
596 | retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_GET_PLATFORM_INFO, | |
597 | __pa(orig_prod_num), __pa(current_prod_num), __pa(serial_no)); | |
598 | convert_to_wide(pdc_result); | |
599 | spin_unlock_irqrestore(&pdc_lock, flags); | |
600 | ||
601 | return retval; | |
602 | } | |
603 | ||
1da177e4 LT |
604 | /** |
605 | * pdc_cache_info - Return cache and TLB information. | |
606 | * @cache_info: The return buffer. | |
607 | * | |
608 | * Returns information about the processor's cache and TLB. | |
609 | */ | |
610 | int pdc_cache_info(struct pdc_cache_info *cache_info) | |
611 | { | |
612 | int retval; | |
09690b18 | 613 | unsigned long flags; |
1da177e4 | 614 | |
09690b18 | 615 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
616 | retval = mem_pdc_call(PDC_CACHE, PDC_CACHE_INFO, __pa(pdc_result), 0); |
617 | convert_to_wide(pdc_result); | |
618 | memcpy(cache_info, pdc_result, sizeof(*cache_info)); | |
09690b18 | 619 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
620 | |
621 | return retval; | |
622 | } | |
623 | ||
a9d2d386 KM |
624 | /** |
625 | * pdc_spaceid_bits - Return whether Space ID hashing is turned on. | |
626 | * @space_bits: Should be 0, if not, bad mojo! | |
627 | * | |
628 | * Returns information about Space ID hashing. | |
629 | */ | |
630 | int pdc_spaceid_bits(unsigned long *space_bits) | |
631 | { | |
632 | int retval; | |
09690b18 | 633 | unsigned long flags; |
a9d2d386 | 634 | |
09690b18 | 635 | spin_lock_irqsave(&pdc_lock, flags); |
a9d2d386 KM |
636 | pdc_result[0] = 0; |
637 | retval = mem_pdc_call(PDC_CACHE, PDC_CACHE_RET_SPID, __pa(pdc_result), 0); | |
638 | convert_to_wide(pdc_result); | |
639 | *space_bits = pdc_result[0]; | |
09690b18 | 640 | spin_unlock_irqrestore(&pdc_lock, flags); |
a9d2d386 KM |
641 | |
642 | return retval; | |
643 | } | |
644 | ||
1da177e4 LT |
645 | #ifndef CONFIG_PA20 |
646 | /** | |
647 | * pdc_btlb_info - Return block TLB information. | |
648 | * @btlb: The return buffer. | |
649 | * | |
650 | * Returns information about the hardware Block TLB. | |
651 | */ | |
652 | int pdc_btlb_info(struct pdc_btlb_info *btlb) | |
653 | { | |
654 | int retval; | |
09690b18 | 655 | unsigned long flags; |
1da177e4 | 656 | |
09690b18 | 657 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
658 | retval = mem_pdc_call(PDC_BLOCK_TLB, PDC_BTLB_INFO, __pa(pdc_result), 0); |
659 | memcpy(btlb, pdc_result, sizeof(*btlb)); | |
09690b18 | 660 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
661 | |
662 | if(retval < 0) { | |
663 | btlb->max_size = 0; | |
664 | } | |
665 | return retval; | |
666 | } | |
667 | ||
668 | /** | |
669 | * pdc_mem_map_hpa - Find fixed module information. | |
670 | * @address: The return buffer | |
671 | * @mod_path: pointer to dev path structure. | |
672 | * | |
673 | * This call was developed for S700 workstations to allow the kernel to find | |
674 | * the I/O devices (Core I/O). In the future (Kittyhawk and beyond) this | |
675 | * call will be replaced (on workstations) by the architected PDC_SYSTEM_MAP | |
676 | * call. | |
677 | * | |
678 | * This call is supported by all existing S700 workstations (up to Gecko). | |
679 | */ | |
680 | int pdc_mem_map_hpa(struct pdc_memory_map *address, | |
681 | struct pdc_module_path *mod_path) | |
682 | { | |
683 | int retval; | |
09690b18 | 684 | unsigned long flags; |
1da177e4 | 685 | |
09690b18 | 686 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
687 | memcpy(pdc_result2, mod_path, sizeof(*mod_path)); |
688 | retval = mem_pdc_call(PDC_MEM_MAP, PDC_MEM_MAP_HPA, __pa(pdc_result), | |
689 | __pa(pdc_result2)); | |
690 | memcpy(address, pdc_result, sizeof(*address)); | |
09690b18 | 691 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
692 | |
693 | return retval; | |
694 | } | |
695 | #endif /* !CONFIG_PA20 */ | |
696 | ||
697 | /** | |
698 | * pdc_lan_station_id - Get the LAN address. | |
699 | * @lan_addr: The return buffer. | |
700 | * @hpa: The network device HPA. | |
701 | * | |
702 | * Get the LAN station address when it is not directly available from the LAN hardware. | |
703 | */ | |
704 | int pdc_lan_station_id(char *lan_addr, unsigned long hpa) | |
705 | { | |
706 | int retval; | |
09690b18 | 707 | unsigned long flags; |
1da177e4 | 708 | |
09690b18 | 709 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
710 | retval = mem_pdc_call(PDC_LAN_STATION_ID, PDC_LAN_STATION_ID_READ, |
711 | __pa(pdc_result), hpa); | |
712 | if (retval < 0) { | |
713 | /* FIXME: else read MAC from NVRAM */ | |
714 | memset(lan_addr, 0, PDC_LAN_STATION_ID_SIZE); | |
715 | } else { | |
716 | memcpy(lan_addr, pdc_result, PDC_LAN_STATION_ID_SIZE); | |
717 | } | |
09690b18 | 718 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
719 | |
720 | return retval; | |
721 | } | |
722 | EXPORT_SYMBOL(pdc_lan_station_id); | |
723 | ||
724 | /** | |
725 | * pdc_stable_read - Read data from Stable Storage. | |
726 | * @staddr: Stable Storage address to access. | |
727 | * @memaddr: The memory address where Stable Storage data shall be copied. | |
7022672e | 728 | * @count: number of bytes to transfer. count is multiple of 4. |
1da177e4 LT |
729 | * |
730 | * This PDC call reads from the Stable Storage address supplied in staddr | |
731 | * and copies count bytes to the memory address memaddr. | |
732 | * The call will fail if staddr+count > PDC_STABLE size. | |
733 | */ | |
734 | int pdc_stable_read(unsigned long staddr, void *memaddr, unsigned long count) | |
735 | { | |
736 | int retval; | |
09690b18 | 737 | unsigned long flags; |
1da177e4 | 738 | |
09690b18 | 739 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
740 | retval = mem_pdc_call(PDC_STABLE, PDC_STABLE_READ, staddr, |
741 | __pa(pdc_result), count); | |
742 | convert_to_wide(pdc_result); | |
743 | memcpy(memaddr, pdc_result, count); | |
09690b18 | 744 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
745 | |
746 | return retval; | |
747 | } | |
748 | EXPORT_SYMBOL(pdc_stable_read); | |
749 | ||
750 | /** | |
751 | * pdc_stable_write - Write data to Stable Storage. | |
752 | * @staddr: Stable Storage address to access. | |
753 | * @memaddr: The memory address where Stable Storage data shall be read from. | |
7022672e | 754 | * @count: number of bytes to transfer. count is multiple of 4. |
1da177e4 LT |
755 | * |
756 | * This PDC call reads count bytes from the supplied memaddr address, | |
757 | * and copies count bytes to the Stable Storage address staddr. | |
758 | * The call will fail if staddr+count > PDC_STABLE size. | |
759 | */ | |
760 | int pdc_stable_write(unsigned long staddr, void *memaddr, unsigned long count) | |
761 | { | |
762 | int retval; | |
09690b18 | 763 | unsigned long flags; |
1da177e4 | 764 | |
09690b18 | 765 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
766 | memcpy(pdc_result, memaddr, count); |
767 | convert_to_wide(pdc_result); | |
768 | retval = mem_pdc_call(PDC_STABLE, PDC_STABLE_WRITE, staddr, | |
769 | __pa(pdc_result), count); | |
09690b18 | 770 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
771 | |
772 | return retval; | |
773 | } | |
774 | EXPORT_SYMBOL(pdc_stable_write); | |
775 | ||
776 | /** | |
777 | * pdc_stable_get_size - Get Stable Storage size in bytes. | |
778 | * @size: pointer where the size will be stored. | |
779 | * | |
780 | * This PDC call returns the number of bytes in the processor's Stable | |
781 | * Storage, which is the number of contiguous bytes implemented in Stable | |
782 | * Storage starting from staddr=0. size in an unsigned 64-bit integer | |
783 | * which is a multiple of four. | |
784 | */ | |
785 | int pdc_stable_get_size(unsigned long *size) | |
786 | { | |
787 | int retval; | |
09690b18 | 788 | unsigned long flags; |
1da177e4 | 789 | |
09690b18 | 790 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
791 | retval = mem_pdc_call(PDC_STABLE, PDC_STABLE_RETURN_SIZE, __pa(pdc_result)); |
792 | *size = pdc_result[0]; | |
09690b18 | 793 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
794 | |
795 | return retval; | |
796 | } | |
797 | EXPORT_SYMBOL(pdc_stable_get_size); | |
798 | ||
799 | /** | |
800 | * pdc_stable_verify_contents - Checks that Stable Storage contents are valid. | |
801 | * | |
802 | * This PDC call is meant to be used to check the integrity of the current | |
803 | * contents of Stable Storage. | |
804 | */ | |
805 | int pdc_stable_verify_contents(void) | |
806 | { | |
807 | int retval; | |
09690b18 | 808 | unsigned long flags; |
1da177e4 | 809 | |
09690b18 | 810 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 | 811 | retval = mem_pdc_call(PDC_STABLE, PDC_STABLE_VERIFY_CONTENTS); |
09690b18 | 812 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
813 | |
814 | return retval; | |
815 | } | |
816 | EXPORT_SYMBOL(pdc_stable_verify_contents); | |
817 | ||
818 | /** | |
819 | * pdc_stable_initialize - Sets Stable Storage contents to zero and initialize | |
820 | * the validity indicator. | |
821 | * | |
822 | * This PDC call will erase all contents of Stable Storage. Use with care! | |
823 | */ | |
824 | int pdc_stable_initialize(void) | |
825 | { | |
826 | int retval; | |
09690b18 | 827 | unsigned long flags; |
1da177e4 | 828 | |
09690b18 | 829 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 | 830 | retval = mem_pdc_call(PDC_STABLE, PDC_STABLE_INITIALIZE); |
09690b18 | 831 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
832 | |
833 | return retval; | |
834 | } | |
835 | EXPORT_SYMBOL(pdc_stable_initialize); | |
836 | ||
837 | /** | |
838 | * pdc_get_initiator - Get the SCSI Interface Card params (SCSI ID, SDTR, SE or LVD) | |
839 | * @hwpath: fully bc.mod style path to the device. | |
840 | * @initiator: the array to return the result into | |
841 | * | |
842 | * Get the SCSI operational parameters from PDC. | |
843 | * Needed since HPUX never used BIOS or symbios card NVRAM. | |
844 | * Most ncr/sym cards won't have an entry and just use whatever | |
845 | * capabilities of the card are (eg Ultra, LVD). But there are | |
846 | * several cases where it's useful: | |
847 | * o set SCSI id for Multi-initiator clusters, | |
848 | * o cable too long (ie SE scsi 10Mhz won't support 6m length), | |
849 | * o bus width exported is less than what the interface chip supports. | |
850 | */ | |
851 | int pdc_get_initiator(struct hardware_path *hwpath, struct pdc_initiator *initiator) | |
852 | { | |
853 | int retval; | |
09690b18 | 854 | unsigned long flags; |
1da177e4 | 855 | |
09690b18 | 856 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
857 | |
858 | /* BCJ-XXXX series boxes. E.G. "9000/785/C3000" */ | |
859 | #define IS_SPROCKETS() (strlen(boot_cpu_data.pdc.sys_model_name) == 14 && \ | |
860 | strncmp(boot_cpu_data.pdc.sys_model_name, "9000/785", 8) == 0) | |
861 | ||
862 | retval = mem_pdc_call(PDC_INITIATOR, PDC_GET_INITIATOR, | |
863 | __pa(pdc_result), __pa(hwpath)); | |
864 | if (retval < PDC_OK) | |
865 | goto out; | |
866 | ||
867 | if (pdc_result[0] < 16) { | |
868 | initiator->host_id = pdc_result[0]; | |
869 | } else { | |
870 | initiator->host_id = -1; | |
871 | } | |
872 | ||
873 | /* | |
874 | * Sprockets and Piranha return 20 or 40 (MT/s). Prelude returns | |
875 | * 1, 2, 5 or 10 for 5, 10, 20 or 40 MT/s, respectively | |
876 | */ | |
877 | switch (pdc_result[1]) { | |
878 | case 1: initiator->factor = 50; break; | |
879 | case 2: initiator->factor = 25; break; | |
880 | case 5: initiator->factor = 12; break; | |
881 | case 25: initiator->factor = 10; break; | |
882 | case 20: initiator->factor = 12; break; | |
883 | case 40: initiator->factor = 10; break; | |
884 | default: initiator->factor = -1; break; | |
885 | } | |
886 | ||
887 | if (IS_SPROCKETS()) { | |
888 | initiator->width = pdc_result[4]; | |
889 | initiator->mode = pdc_result[5]; | |
890 | } else { | |
891 | initiator->width = -1; | |
892 | initiator->mode = -1; | |
893 | } | |
894 | ||
895 | out: | |
09690b18 KM |
896 | spin_unlock_irqrestore(&pdc_lock, flags); |
897 | ||
1da177e4 LT |
898 | return (retval >= PDC_OK); |
899 | } | |
900 | EXPORT_SYMBOL(pdc_get_initiator); | |
901 | ||
902 | ||
903 | /** | |
904 | * pdc_pci_irt_size - Get the number of entries in the interrupt routing table. | |
905 | * @num_entries: The return value. | |
906 | * @hpa: The HPA for the device. | |
907 | * | |
908 | * This PDC function returns the number of entries in the specified cell's | |
909 | * interrupt table. | |
910 | * Similar to PDC_PAT stuff - but added for Forte/Allegro boxes | |
911 | */ | |
912 | int pdc_pci_irt_size(unsigned long *num_entries, unsigned long hpa) | |
913 | { | |
914 | int retval; | |
09690b18 | 915 | unsigned long flags; |
1da177e4 | 916 | |
09690b18 | 917 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
918 | retval = mem_pdc_call(PDC_PCI_INDEX, PDC_PCI_GET_INT_TBL_SIZE, |
919 | __pa(pdc_result), hpa); | |
920 | convert_to_wide(pdc_result); | |
921 | *num_entries = pdc_result[0]; | |
09690b18 | 922 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
923 | |
924 | return retval; | |
925 | } | |
926 | ||
927 | /** | |
928 | * pdc_pci_irt - Get the PCI interrupt routing table. | |
929 | * @num_entries: The number of entries in the table. | |
930 | * @hpa: The Hard Physical Address of the device. | |
931 | * @tbl: | |
932 | * | |
933 | * Get the PCI interrupt routing table for the device at the given HPA. | |
934 | * Similar to PDC_PAT stuff - but added for Forte/Allegro boxes | |
935 | */ | |
936 | int pdc_pci_irt(unsigned long num_entries, unsigned long hpa, void *tbl) | |
937 | { | |
938 | int retval; | |
09690b18 | 939 | unsigned long flags; |
1da177e4 LT |
940 | |
941 | BUG_ON((unsigned long)tbl & 0x7); | |
942 | ||
09690b18 | 943 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
944 | pdc_result[0] = num_entries; |
945 | retval = mem_pdc_call(PDC_PCI_INDEX, PDC_PCI_GET_INT_TBL, | |
946 | __pa(pdc_result), hpa, __pa(tbl)); | |
09690b18 | 947 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
948 | |
949 | return retval; | |
950 | } | |
951 | ||
952 | ||
953 | #if 0 /* UNTEST CODE - left here in case someone needs it */ | |
954 | ||
955 | /** | |
956 | * pdc_pci_config_read - read PCI config space. | |
957 | * @hpa token from PDC to indicate which PCI device | |
958 | * @pci_addr configuration space address to read from | |
959 | * | |
960 | * Read PCI Configuration space *before* linux PCI subsystem is running. | |
961 | */ | |
962 | unsigned int pdc_pci_config_read(void *hpa, unsigned long cfg_addr) | |
963 | { | |
964 | int retval; | |
09690b18 KM |
965 | unsigned long flags; |
966 | ||
967 | spin_lock_irqsave(&pdc_lock, flags); | |
1da177e4 LT |
968 | pdc_result[0] = 0; |
969 | pdc_result[1] = 0; | |
970 | retval = mem_pdc_call(PDC_PCI_INDEX, PDC_PCI_READ_CONFIG, | |
971 | __pa(pdc_result), hpa, cfg_addr&~3UL, 4UL); | |
09690b18 KM |
972 | spin_unlock_irqrestore(&pdc_lock, flags); |
973 | ||
1da177e4 LT |
974 | return retval ? ~0 : (unsigned int) pdc_result[0]; |
975 | } | |
976 | ||
977 | ||
978 | /** | |
979 | * pdc_pci_config_write - read PCI config space. | |
980 | * @hpa token from PDC to indicate which PCI device | |
981 | * @pci_addr configuration space address to write | |
982 | * @val value we want in the 32-bit register | |
983 | * | |
984 | * Write PCI Configuration space *before* linux PCI subsystem is running. | |
985 | */ | |
986 | void pdc_pci_config_write(void *hpa, unsigned long cfg_addr, unsigned int val) | |
987 | { | |
988 | int retval; | |
09690b18 KM |
989 | unsigned long flags; |
990 | ||
991 | spin_lock_irqsave(&pdc_lock, flags); | |
1da177e4 LT |
992 | pdc_result[0] = 0; |
993 | retval = mem_pdc_call(PDC_PCI_INDEX, PDC_PCI_WRITE_CONFIG, | |
994 | __pa(pdc_result), hpa, | |
995 | cfg_addr&~3UL, 4UL, (unsigned long) val); | |
09690b18 KM |
996 | spin_unlock_irqrestore(&pdc_lock, flags); |
997 | ||
1da177e4 LT |
998 | return retval; |
999 | } | |
1000 | #endif /* UNTESTED CODE */ | |
1001 | ||
1002 | /** | |
1003 | * pdc_tod_read - Read the Time-Of-Day clock. | |
1004 | * @tod: The return buffer: | |
1005 | * | |
1006 | * Read the Time-Of-Day clock | |
1007 | */ | |
1008 | int pdc_tod_read(struct pdc_tod *tod) | |
1009 | { | |
1010 | int retval; | |
09690b18 | 1011 | unsigned long flags; |
1da177e4 | 1012 | |
09690b18 | 1013 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1014 | retval = mem_pdc_call(PDC_TOD, PDC_TOD_READ, __pa(pdc_result), 0); |
1015 | convert_to_wide(pdc_result); | |
1016 | memcpy(tod, pdc_result, sizeof(*tod)); | |
09690b18 | 1017 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1018 | |
1019 | return retval; | |
1020 | } | |
1021 | EXPORT_SYMBOL(pdc_tod_read); | |
1022 | ||
c9c2877d HD |
1023 | int pdc_mem_pdt_info(struct pdc_mem_retinfo *rinfo) |
1024 | { | |
1025 | int retval; | |
1026 | unsigned long flags; | |
1027 | ||
1028 | spin_lock_irqsave(&pdc_lock, flags); | |
1029 | retval = mem_pdc_call(PDC_MEM, PDC_MEM_MEMINFO, __pa(pdc_result), 0); | |
1030 | convert_to_wide(pdc_result); | |
1031 | memcpy(rinfo, pdc_result, sizeof(*rinfo)); | |
1032 | spin_unlock_irqrestore(&pdc_lock, flags); | |
1033 | ||
1034 | return retval; | |
1035 | } | |
1036 | ||
1037 | int pdc_mem_pdt_read_entries(struct pdc_mem_read_pdt *pret, | |
1038 | unsigned long *pdt_entries_ptr) | |
1039 | { | |
1040 | int retval; | |
1041 | unsigned long flags; | |
1042 | ||
1043 | spin_lock_irqsave(&pdc_lock, flags); | |
1044 | retval = mem_pdc_call(PDC_MEM, PDC_MEM_READ_PDT, __pa(pdc_result), | |
8a5aa00e | 1045 | __pa(pdt_entries_ptr)); |
c9c2877d HD |
1046 | if (retval == PDC_OK) { |
1047 | convert_to_wide(pdc_result); | |
1048 | memcpy(pret, pdc_result, sizeof(*pret)); | |
c9c2877d HD |
1049 | } |
1050 | spin_unlock_irqrestore(&pdc_lock, flags); | |
1051 | ||
8a5aa00e HD |
1052 | #ifdef CONFIG_64BIT |
1053 | /* | |
1054 | * 64-bit kernels should not call this PDT function in narrow mode. | |
1055 | * The pdt_entries_ptr array above will now contain 32-bit values | |
1056 | */ | |
1057 | if (WARN_ON_ONCE((retval == PDC_OK) && parisc_narrow_firmware)) | |
1058 | return PDC_ERROR; | |
1059 | #endif | |
1060 | ||
c9c2877d HD |
1061 | return retval; |
1062 | } | |
1063 | ||
1da177e4 LT |
1064 | /** |
1065 | * pdc_tod_set - Set the Time-Of-Day clock. | |
1066 | * @sec: The number of seconds since epoch. | |
1067 | * @usec: The number of micro seconds. | |
1068 | * | |
1069 | * Set the Time-Of-Day clock. | |
1070 | */ | |
1071 | int pdc_tod_set(unsigned long sec, unsigned long usec) | |
1072 | { | |
1073 | int retval; | |
09690b18 | 1074 | unsigned long flags; |
1da177e4 | 1075 | |
09690b18 | 1076 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 | 1077 | retval = mem_pdc_call(PDC_TOD, PDC_TOD_WRITE, sec, usec); |
09690b18 | 1078 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1079 | |
1080 | return retval; | |
1081 | } | |
1082 | EXPORT_SYMBOL(pdc_tod_set); | |
1083 | ||
a8f44e38 | 1084 | #ifdef CONFIG_64BIT |
1da177e4 LT |
1085 | int pdc_mem_mem_table(struct pdc_memory_table_raddr *r_addr, |
1086 | struct pdc_memory_table *tbl, unsigned long entries) | |
1087 | { | |
1088 | int retval; | |
09690b18 | 1089 | unsigned long flags; |
1da177e4 | 1090 | |
09690b18 | 1091 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1092 | retval = mem_pdc_call(PDC_MEM, PDC_MEM_TABLE, __pa(pdc_result), __pa(pdc_result2), entries); |
1093 | convert_to_wide(pdc_result); | |
1094 | memcpy(r_addr, pdc_result, sizeof(*r_addr)); | |
1095 | memcpy(tbl, pdc_result2, entries * sizeof(*tbl)); | |
09690b18 | 1096 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1097 | |
1098 | return retval; | |
1099 | } | |
a8f44e38 | 1100 | #endif /* CONFIG_64BIT */ |
1da177e4 LT |
1101 | |
1102 | /* FIXME: Is this pdc used? I could not find type reference to ftc_bitmap | |
1103 | * so I guessed at unsigned long. Someone who knows what this does, can fix | |
1104 | * it later. :) | |
1105 | */ | |
1106 | int pdc_do_firm_test_reset(unsigned long ftc_bitmap) | |
1107 | { | |
1108 | int retval; | |
09690b18 | 1109 | unsigned long flags; |
1da177e4 | 1110 | |
09690b18 | 1111 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1112 | retval = mem_pdc_call(PDC_BROADCAST_RESET, PDC_DO_FIRM_TEST_RESET, |
1113 | PDC_FIRM_TEST_MAGIC, ftc_bitmap); | |
09690b18 | 1114 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1115 | |
1116 | return retval; | |
1117 | } | |
1118 | ||
1119 | /* | |
1120 | * pdc_do_reset - Reset the system. | |
1121 | * | |
1122 | * Reset the system. | |
1123 | */ | |
1124 | int pdc_do_reset(void) | |
1125 | { | |
1126 | int retval; | |
09690b18 | 1127 | unsigned long flags; |
1da177e4 | 1128 | |
09690b18 | 1129 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 | 1130 | retval = mem_pdc_call(PDC_BROADCAST_RESET, PDC_DO_RESET); |
09690b18 | 1131 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1132 | |
1133 | return retval; | |
1134 | } | |
1135 | ||
1136 | /* | |
1137 | * pdc_soft_power_info - Enable soft power switch. | |
1138 | * @power_reg: address of soft power register | |
1139 | * | |
1140 | * Return the absolute address of the soft power switch register | |
1141 | */ | |
1142 | int __init pdc_soft_power_info(unsigned long *power_reg) | |
1143 | { | |
1144 | int retval; | |
09690b18 | 1145 | unsigned long flags; |
1da177e4 LT |
1146 | |
1147 | *power_reg = (unsigned long) (-1); | |
1148 | ||
09690b18 | 1149 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1150 | retval = mem_pdc_call(PDC_SOFT_POWER, PDC_SOFT_POWER_INFO, __pa(pdc_result), 0); |
1151 | if (retval == PDC_OK) { | |
1152 | convert_to_wide(pdc_result); | |
1153 | *power_reg = f_extend(pdc_result[0]); | |
1154 | } | |
09690b18 | 1155 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1156 | |
1157 | return retval; | |
1158 | } | |
1159 | ||
1160 | /* | |
1161 | * pdc_soft_power_button - Control the soft power button behaviour | |
1162 | * @sw_control: 0 for hardware control, 1 for software control | |
1163 | * | |
1164 | * | |
1165 | * This PDC function places the soft power button under software or | |
1166 | * hardware control. | |
1167 | * Under software control the OS may control to when to allow to shut | |
1168 | * down the system. Under hardware control pressing the power button | |
1169 | * powers off the system immediately. | |
1170 | */ | |
1171 | int pdc_soft_power_button(int sw_control) | |
1172 | { | |
1173 | int retval; | |
09690b18 KM |
1174 | unsigned long flags; |
1175 | ||
1176 | spin_lock_irqsave(&pdc_lock, flags); | |
1da177e4 | 1177 | retval = mem_pdc_call(PDC_SOFT_POWER, PDC_SOFT_POWER_ENABLE, __pa(pdc_result), sw_control); |
09690b18 KM |
1178 | spin_unlock_irqrestore(&pdc_lock, flags); |
1179 | ||
1da177e4 LT |
1180 | return retval; |
1181 | } | |
1182 | ||
1183 | /* | |
1184 | * pdc_io_reset - Hack to avoid overlapping range registers of Bridges devices. | |
1185 | * Primarily a problem on T600 (which parisc-linux doesn't support) but | |
1186 | * who knows what other platform firmware might do with this OS "hook". | |
1187 | */ | |
1188 | void pdc_io_reset(void) | |
1189 | { | |
09690b18 KM |
1190 | unsigned long flags; |
1191 | ||
1192 | spin_lock_irqsave(&pdc_lock, flags); | |
1da177e4 | 1193 | mem_pdc_call(PDC_IO, PDC_IO_RESET, 0); |
09690b18 | 1194 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1195 | } |
1196 | ||
1197 | /* | |
1198 | * pdc_io_reset_devices - Hack to Stop USB controller | |
1199 | * | |
1200 | * If PDC used the usb controller, the usb controller | |
1201 | * is still running and will crash the machines during iommu | |
1202 | * setup, because of still running DMA. This PDC call | |
1203 | * stops the USB controller. | |
1204 | * Normally called after calling pdc_io_reset(). | |
1205 | */ | |
1206 | void pdc_io_reset_devices(void) | |
1207 | { | |
09690b18 KM |
1208 | unsigned long flags; |
1209 | ||
1210 | spin_lock_irqsave(&pdc_lock, flags); | |
1da177e4 | 1211 | mem_pdc_call(PDC_IO, PDC_IO_RESET_DEVICES, 0); |
09690b18 | 1212 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1213 | } |
1214 | ||
f5213b2c HD |
1215 | #endif /* defined(BOOTLOADER) */ |
1216 | ||
ef1afd4d KM |
1217 | /* locked by pdc_console_lock */ |
1218 | static int __attribute__((aligned(8))) iodc_retbuf[32]; | |
1219 | static char __attribute__((aligned(64))) iodc_dbuf[4096]; | |
1da177e4 LT |
1220 | |
1221 | /** | |
721fdf34 KM |
1222 | * pdc_iodc_print - Console print using IODC. |
1223 | * @str: the string to output. | |
1224 | * @count: length of str | |
1da177e4 LT |
1225 | * |
1226 | * Note that only these special chars are architected for console IODC io: | |
1227 | * BEL, BS, CR, and LF. Others are passed through. | |
1228 | * Since the HP console requires CR+LF to perform a 'newline', we translate | |
1229 | * "\n" to "\r\n". | |
1230 | */ | |
ef1afd4d | 1231 | int pdc_iodc_print(const unsigned char *str, unsigned count) |
1da177e4 | 1232 | { |
721fdf34 | 1233 | unsigned int i; |
c53421b1 | 1234 | unsigned long flags; |
1da177e4 | 1235 | |
fbea6684 | 1236 | for (i = 0; i < count;) { |
721fdf34 KM |
1237 | switch(str[i]) { |
1238 | case '\n': | |
1239 | iodc_dbuf[i+0] = '\r'; | |
1240 | iodc_dbuf[i+1] = '\n'; | |
1241 | i += 2; | |
ef1afd4d | 1242 | goto print; |
721fdf34 KM |
1243 | default: |
1244 | iodc_dbuf[i] = str[i]; | |
d9b68e5e | 1245 | i++; |
721fdf34 KM |
1246 | break; |
1247 | } | |
1248 | } | |
1da177e4 | 1249 | |
ef1afd4d | 1250 | print: |
1da177e4 LT |
1251 | spin_lock_irqsave(&pdc_lock, flags); |
1252 | real32_call(PAGE0->mem_cons.iodc_io, | |
1253 | (unsigned long)PAGE0->mem_cons.hpa, ENTRY_IO_COUT, | |
1254 | PAGE0->mem_cons.spa, __pa(PAGE0->mem_cons.dp.layers), | |
721fdf34 | 1255 | __pa(iodc_retbuf), 0, __pa(iodc_dbuf), i, 0); |
1da177e4 | 1256 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 | 1257 | |
721fdf34 | 1258 | return i; |
1da177e4 LT |
1259 | } |
1260 | ||
f5213b2c | 1261 | #if !defined(BOOTLOADER) |
1da177e4 LT |
1262 | /** |
1263 | * pdc_iodc_getc - Read a character (non-blocking) from the PDC console. | |
1264 | * | |
1265 | * Read a character (non-blocking) from the PDC console, returns -1 if | |
1266 | * key is not present. | |
1267 | */ | |
1268 | int pdc_iodc_getc(void) | |
1269 | { | |
1da177e4 LT |
1270 | int ch; |
1271 | int status; | |
ef1afd4d | 1272 | unsigned long flags; |
1da177e4 LT |
1273 | |
1274 | /* Bail if no console input device. */ | |
1275 | if (!PAGE0->mem_kbd.iodc_io) | |
1276 | return 0; | |
1277 | ||
1278 | /* wait for a keyboard (rs232)-input */ | |
1279 | spin_lock_irqsave(&pdc_lock, flags); | |
1280 | real32_call(PAGE0->mem_kbd.iodc_io, | |
1281 | (unsigned long)PAGE0->mem_kbd.hpa, ENTRY_IO_CIN, | |
1282 | PAGE0->mem_kbd.spa, __pa(PAGE0->mem_kbd.dp.layers), | |
1283 | __pa(iodc_retbuf), 0, __pa(iodc_dbuf), 1, 0); | |
1284 | ||
1285 | ch = *iodc_dbuf; | |
1286 | status = *iodc_retbuf; | |
1287 | spin_unlock_irqrestore(&pdc_lock, flags); | |
1288 | ||
1289 | if (status == 0) | |
1290 | return -1; | |
1291 | ||
1292 | return ch; | |
1293 | } | |
1294 | ||
1295 | int pdc_sti_call(unsigned long func, unsigned long flags, | |
1296 | unsigned long inptr, unsigned long outputr, | |
1297 | unsigned long glob_cfg) | |
1298 | { | |
1299 | int retval; | |
09690b18 | 1300 | unsigned long irqflags; |
1da177e4 | 1301 | |
09690b18 | 1302 | spin_lock_irqsave(&pdc_lock, irqflags); |
1da177e4 | 1303 | retval = real32_call(func, flags, inptr, outputr, glob_cfg); |
09690b18 | 1304 | spin_unlock_irqrestore(&pdc_lock, irqflags); |
1da177e4 LT |
1305 | |
1306 | return retval; | |
1307 | } | |
1308 | EXPORT_SYMBOL(pdc_sti_call); | |
1309 | ||
a8f44e38 | 1310 | #ifdef CONFIG_64BIT |
1da177e4 LT |
1311 | /** |
1312 | * pdc_pat_cell_get_number - Returns the cell number. | |
1313 | * @cell_info: The return buffer. | |
1314 | * | |
1315 | * This PDC call returns the cell number of the cell from which the call | |
1316 | * is made. | |
1317 | */ | |
1318 | int pdc_pat_cell_get_number(struct pdc_pat_cell_num *cell_info) | |
1319 | { | |
1320 | int retval; | |
09690b18 | 1321 | unsigned long flags; |
1da177e4 | 1322 | |
09690b18 | 1323 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1324 | retval = mem_pdc_call(PDC_PAT_CELL, PDC_PAT_CELL_GET_NUMBER, __pa(pdc_result)); |
1325 | memcpy(cell_info, pdc_result, sizeof(*cell_info)); | |
09690b18 | 1326 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1327 | |
1328 | return retval; | |
1329 | } | |
1330 | ||
1331 | /** | |
1332 | * pdc_pat_cell_module - Retrieve the cell's module information. | |
1333 | * @actcnt: The number of bytes written to mem_addr. | |
1334 | * @ploc: The physical location. | |
1335 | * @mod: The module index. | |
1336 | * @view_type: The view of the address type. | |
1337 | * @mem_addr: The return buffer. | |
1338 | * | |
1339 | * This PDC call returns information about each module attached to the cell | |
1340 | * at the specified location. | |
1341 | */ | |
1342 | int pdc_pat_cell_module(unsigned long *actcnt, unsigned long ploc, unsigned long mod, | |
1343 | unsigned long view_type, void *mem_addr) | |
1344 | { | |
1345 | int retval; | |
09690b18 | 1346 | unsigned long flags; |
1da177e4 LT |
1347 | static struct pdc_pat_cell_mod_maddr_block result __attribute__ ((aligned (8))); |
1348 | ||
09690b18 | 1349 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1350 | retval = mem_pdc_call(PDC_PAT_CELL, PDC_PAT_CELL_MODULE, __pa(pdc_result), |
1351 | ploc, mod, view_type, __pa(&result)); | |
1352 | if(!retval) { | |
1353 | *actcnt = pdc_result[0]; | |
1354 | memcpy(mem_addr, &result, *actcnt); | |
1355 | } | |
09690b18 | 1356 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1357 | |
1358 | return retval; | |
1359 | } | |
1360 | ||
fe8376db HD |
1361 | /** |
1362 | * pdc_pat_cell_info - Retrieve the cell's information. | |
1363 | * @info: The pointer to a struct pdc_pat_cell_info_rtn_block. | |
1364 | * @actcnt: The number of bytes which should be written to info. | |
1365 | * @offset: offset of the structure. | |
1366 | * @cell_number: The cell number which should be asked, or -1 for current cell. | |
1367 | * | |
1368 | * This PDC call returns information about the given cell (or all cells). | |
1369 | */ | |
1370 | int pdc_pat_cell_info(struct pdc_pat_cell_info_rtn_block *info, | |
1371 | unsigned long *actcnt, unsigned long offset, | |
1372 | unsigned long cell_number) | |
1373 | { | |
1374 | int retval; | |
1375 | unsigned long flags; | |
1376 | struct pdc_pat_cell_info_rtn_block result; | |
1377 | ||
1378 | spin_lock_irqsave(&pdc_lock, flags); | |
1379 | retval = mem_pdc_call(PDC_PAT_CELL, PDC_PAT_CELL_GET_INFO, | |
1380 | __pa(pdc_result), __pa(&result), *actcnt, | |
1381 | offset, cell_number); | |
1382 | if (!retval) { | |
1383 | *actcnt = pdc_result[0]; | |
1384 | memcpy(info, &result, *actcnt); | |
1385 | } | |
1386 | spin_unlock_irqrestore(&pdc_lock, flags); | |
1387 | ||
1388 | return retval; | |
1389 | } | |
1390 | ||
1da177e4 LT |
1391 | /** |
1392 | * pdc_pat_cpu_get_number - Retrieve the cpu number. | |
1393 | * @cpu_info: The return buffer. | |
1394 | * @hpa: The Hard Physical Address of the CPU. | |
1395 | * | |
1396 | * Retrieve the cpu number for the cpu at the specified HPA. | |
1397 | */ | |
637250cc | 1398 | int pdc_pat_cpu_get_number(struct pdc_pat_cpu_num *cpu_info, unsigned long hpa) |
1da177e4 LT |
1399 | { |
1400 | int retval; | |
09690b18 | 1401 | unsigned long flags; |
1da177e4 | 1402 | |
09690b18 | 1403 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1404 | retval = mem_pdc_call(PDC_PAT_CPU, PDC_PAT_CPU_GET_NUMBER, |
1405 | __pa(&pdc_result), hpa); | |
1406 | memcpy(cpu_info, pdc_result, sizeof(*cpu_info)); | |
09690b18 | 1407 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1408 | |
1409 | return retval; | |
1410 | } | |
1411 | ||
1412 | /** | |
1413 | * pdc_pat_get_irt_size - Retrieve the number of entries in the cell's interrupt table. | |
1414 | * @num_entries: The return value. | |
1415 | * @cell_num: The target cell. | |
1416 | * | |
1417 | * This PDC function returns the number of entries in the specified cell's | |
1418 | * interrupt table. | |
1419 | */ | |
1420 | int pdc_pat_get_irt_size(unsigned long *num_entries, unsigned long cell_num) | |
1421 | { | |
1422 | int retval; | |
09690b18 | 1423 | unsigned long flags; |
1da177e4 | 1424 | |
09690b18 | 1425 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1426 | retval = mem_pdc_call(PDC_PAT_IO, PDC_PAT_IO_GET_PCI_ROUTING_TABLE_SIZE, |
1427 | __pa(pdc_result), cell_num); | |
1428 | *num_entries = pdc_result[0]; | |
09690b18 | 1429 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1430 | |
1431 | return retval; | |
1432 | } | |
1433 | ||
1434 | /** | |
1435 | * pdc_pat_get_irt - Retrieve the cell's interrupt table. | |
1436 | * @r_addr: The return buffer. | |
1437 | * @cell_num: The target cell. | |
1438 | * | |
1439 | * This PDC function returns the actual interrupt table for the specified cell. | |
1440 | */ | |
1441 | int pdc_pat_get_irt(void *r_addr, unsigned long cell_num) | |
1442 | { | |
1443 | int retval; | |
09690b18 | 1444 | unsigned long flags; |
1da177e4 | 1445 | |
09690b18 | 1446 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1447 | retval = mem_pdc_call(PDC_PAT_IO, PDC_PAT_IO_GET_PCI_ROUTING_TABLE, |
1448 | __pa(r_addr), cell_num); | |
09690b18 | 1449 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1450 | |
1451 | return retval; | |
1452 | } | |
1453 | ||
1454 | /** | |
1455 | * pdc_pat_pd_get_addr_map - Retrieve information about memory address ranges. | |
1456 | * @actlen: The return buffer. | |
1457 | * @mem_addr: Pointer to the memory buffer. | |
1458 | * @count: The number of bytes to read from the buffer. | |
1459 | * @offset: The offset with respect to the beginning of the buffer. | |
1460 | * | |
1461 | */ | |
1462 | int pdc_pat_pd_get_addr_map(unsigned long *actual_len, void *mem_addr, | |
1463 | unsigned long count, unsigned long offset) | |
1464 | { | |
1465 | int retval; | |
09690b18 | 1466 | unsigned long flags; |
1da177e4 | 1467 | |
09690b18 | 1468 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1469 | retval = mem_pdc_call(PDC_PAT_PD, PDC_PAT_PD_GET_ADDR_MAP, __pa(pdc_result), |
1470 | __pa(pdc_result2), count, offset); | |
1471 | *actual_len = pdc_result[0]; | |
1472 | memcpy(mem_addr, pdc_result2, *actual_len); | |
09690b18 | 1473 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1474 | |
1475 | return retval; | |
1476 | } | |
1477 | ||
fe8376db HD |
1478 | /** |
1479 | * pdc_pat_pd_get_PDC_interface_revisions - Retrieve PDC interface revisions. | |
1480 | * @legacy_rev: The legacy revision. | |
1481 | * @pat_rev: The PAT revision. | |
1482 | * @pdc_cap: The PDC capabilities. | |
1483 | * | |
1484 | */ | |
1485 | int pdc_pat_pd_get_pdc_revisions(unsigned long *legacy_rev, | |
1486 | unsigned long *pat_rev, unsigned long *pdc_cap) | |
1487 | { | |
1488 | int retval; | |
1489 | unsigned long flags; | |
1490 | ||
1491 | spin_lock_irqsave(&pdc_lock, flags); | |
1492 | retval = mem_pdc_call(PDC_PAT_PD, PDC_PAT_PD_GET_PDC_INTERF_REV, | |
1493 | __pa(pdc_result)); | |
1494 | if (retval == PDC_OK) { | |
1495 | *legacy_rev = pdc_result[0]; | |
1496 | *pat_rev = pdc_result[1]; | |
1497 | *pdc_cap = pdc_result[2]; | |
1498 | } | |
1499 | spin_unlock_irqrestore(&pdc_lock, flags); | |
1500 | ||
1501 | return retval; | |
1502 | } | |
1503 | ||
1504 | ||
1da177e4 LT |
1505 | /** |
1506 | * pdc_pat_io_pci_cfg_read - Read PCI configuration space. | |
1507 | * @pci_addr: PCI configuration space address for which the read request is being made. | |
1508 | * @pci_size: Size of read in bytes. Valid values are 1, 2, and 4. | |
1509 | * @mem_addr: Pointer to return memory buffer. | |
1510 | * | |
1511 | */ | |
1512 | int pdc_pat_io_pci_cfg_read(unsigned long pci_addr, int pci_size, u32 *mem_addr) | |
1513 | { | |
1514 | int retval; | |
09690b18 KM |
1515 | unsigned long flags; |
1516 | ||
1517 | spin_lock_irqsave(&pdc_lock, flags); | |
1da177e4 LT |
1518 | retval = mem_pdc_call(PDC_PAT_IO, PDC_PAT_IO_PCI_CONFIG_READ, |
1519 | __pa(pdc_result), pci_addr, pci_size); | |
1520 | switch(pci_size) { | |
49ea1480 HD |
1521 | case 1: *(u8 *) mem_addr = (u8) pdc_result[0]; break; |
1522 | case 2: *(u16 *)mem_addr = (u16) pdc_result[0]; break; | |
1523 | case 4: *(u32 *)mem_addr = (u32) pdc_result[0]; break; | |
1da177e4 | 1524 | } |
09690b18 | 1525 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1526 | |
1527 | return retval; | |
1528 | } | |
1529 | ||
1530 | /** | |
1531 | * pdc_pat_io_pci_cfg_write - Retrieve information about memory address ranges. | |
1532 | * @pci_addr: PCI configuration space address for which the write request is being made. | |
1533 | * @pci_size: Size of write in bytes. Valid values are 1, 2, and 4. | |
1534 | * @value: Pointer to 1, 2, or 4 byte value in low order end of argument to be | |
1535 | * written to PCI Config space. | |
1536 | * | |
1537 | */ | |
1538 | int pdc_pat_io_pci_cfg_write(unsigned long pci_addr, int pci_size, u32 val) | |
1539 | { | |
1540 | int retval; | |
09690b18 | 1541 | unsigned long flags; |
1da177e4 | 1542 | |
09690b18 | 1543 | spin_lock_irqsave(&pdc_lock, flags); |
1da177e4 LT |
1544 | retval = mem_pdc_call(PDC_PAT_IO, PDC_PAT_IO_PCI_CONFIG_WRITE, |
1545 | pci_addr, pci_size, val); | |
09690b18 | 1546 | spin_unlock_irqrestore(&pdc_lock, flags); |
1da177e4 LT |
1547 | |
1548 | return retval; | |
1549 | } | |
c9c2877d HD |
1550 | |
1551 | /** | |
1552 | * pdc_pat_mem_pdc_info - Retrieve information about page deallocation table | |
1553 | * @rinfo: memory pdt information | |
1554 | * | |
1555 | */ | |
1556 | int pdc_pat_mem_pdt_info(struct pdc_pat_mem_retinfo *rinfo) | |
1557 | { | |
1558 | int retval; | |
1559 | unsigned long flags; | |
1560 | ||
1561 | spin_lock_irqsave(&pdc_lock, flags); | |
1562 | retval = mem_pdc_call(PDC_PAT_MEM, PDC_PAT_MEM_PD_INFO, | |
1563 | __pa(&pdc_result)); | |
1564 | if (retval == PDC_OK) | |
1565 | memcpy(rinfo, &pdc_result, sizeof(*rinfo)); | |
1566 | spin_unlock_irqrestore(&pdc_lock, flags); | |
1567 | ||
1568 | return retval; | |
1569 | } | |
1570 | ||
8a5aa00e HD |
1571 | /** |
1572 | * pdc_pat_mem_pdt_cell_info - Retrieve information about page deallocation | |
1573 | * table of a cell | |
1574 | * @rinfo: memory pdt information | |
1575 | * @cell: cell number | |
1576 | * | |
1577 | */ | |
1578 | int pdc_pat_mem_pdt_cell_info(struct pdc_pat_mem_cell_pdt_retinfo *rinfo, | |
1579 | unsigned long cell) | |
1580 | { | |
1581 | int retval; | |
1582 | unsigned long flags; | |
1583 | ||
1584 | spin_lock_irqsave(&pdc_lock, flags); | |
1585 | retval = mem_pdc_call(PDC_PAT_MEM, PDC_PAT_MEM_CELL_INFO, | |
1586 | __pa(&pdc_result), cell); | |
1587 | if (retval == PDC_OK) | |
1588 | memcpy(rinfo, &pdc_result, sizeof(*rinfo)); | |
1589 | spin_unlock_irqrestore(&pdc_lock, flags); | |
1590 | ||
1591 | return retval; | |
1592 | } | |
1593 | ||
c9c2877d HD |
1594 | /** |
1595 | * pdc_pat_mem_read_cell_pdt - Read PDT entries from (old) PAT firmware | |
1596 | * @pret: array of PDT entries | |
1597 | * @pdt_entries_ptr: ptr to hold number of PDT entries | |
1598 | * @max_entries: maximum number of entries to be read | |
1599 | * | |
1600 | */ | |
1601 | int pdc_pat_mem_read_cell_pdt(struct pdc_pat_mem_read_pd_retinfo *pret, | |
1602 | unsigned long *pdt_entries_ptr, unsigned long max_entries) | |
1603 | { | |
1604 | int retval; | |
1605 | unsigned long flags, entries; | |
1606 | ||
1607 | spin_lock_irqsave(&pdc_lock, flags); | |
1608 | /* PDC_PAT_MEM_CELL_READ is available on early PAT machines only */ | |
1609 | retval = mem_pdc_call(PDC_PAT_MEM, PDC_PAT_MEM_CELL_READ, | |
8a5aa00e HD |
1610 | __pa(&pdc_result), parisc_cell_num, |
1611 | __pa(pdt_entries_ptr)); | |
c9c2877d HD |
1612 | |
1613 | if (retval == PDC_OK) { | |
1614 | /* build up return value as for PDC_PAT_MEM_PD_READ */ | |
1615 | entries = min(pdc_result[0], max_entries); | |
1616 | pret->pdt_entries = entries; | |
1617 | pret->actual_count_bytes = entries * sizeof(unsigned long); | |
c9c2877d HD |
1618 | } |
1619 | ||
1620 | spin_unlock_irqrestore(&pdc_lock, flags); | |
1621 | WARN_ON(retval == PDC_OK && pdc_result[0] > max_entries); | |
1622 | ||
1623 | return retval; | |
1624 | } | |
1625 | /** | |
1626 | * pdc_pat_mem_read_pd_pdt - Read PDT entries from (newer) PAT firmware | |
1627 | * @pret: array of PDT entries | |
1628 | * @pdt_entries_ptr: ptr to hold number of PDT entries | |
8a5aa00e HD |
1629 | * @count: number of bytes to read |
1630 | * @offset: offset to start (in bytes) | |
c9c2877d HD |
1631 | * |
1632 | */ | |
1633 | int pdc_pat_mem_read_pd_pdt(struct pdc_pat_mem_read_pd_retinfo *pret, | |
1634 | unsigned long *pdt_entries_ptr, unsigned long count, | |
1635 | unsigned long offset) | |
1636 | { | |
1637 | int retval; | |
f520e552 | 1638 | unsigned long flags, entries; |
c9c2877d HD |
1639 | |
1640 | spin_lock_irqsave(&pdc_lock, flags); | |
1641 | retval = mem_pdc_call(PDC_PAT_MEM, PDC_PAT_MEM_PD_READ, | |
f520e552 | 1642 | __pa(&pdc_result), __pa(pdt_entries_ptr), |
c9c2877d | 1643 | count, offset); |
f520e552 HD |
1644 | |
1645 | if (retval == PDC_OK) { | |
1646 | entries = min(pdc_result[0], count); | |
1647 | pret->actual_count_bytes = entries; | |
1648 | pret->pdt_entries = entries / sizeof(unsigned long); | |
1649 | } | |
1650 | ||
c9c2877d HD |
1651 | spin_unlock_irqrestore(&pdc_lock, flags); |
1652 | ||
1653 | return retval; | |
1654 | } | |
25a9b765 HD |
1655 | |
1656 | /** | |
1657 | * pdc_pat_mem_get_dimm_phys_location - Get physical DIMM slot via PAT firmware | |
1658 | * @pret: ptr to hold returned information | |
1659 | * @phys_addr: physical address to examine | |
1660 | * | |
1661 | */ | |
1662 | int pdc_pat_mem_get_dimm_phys_location( | |
1663 | struct pdc_pat_mem_phys_mem_location *pret, | |
1664 | unsigned long phys_addr) | |
1665 | { | |
1666 | int retval; | |
1667 | unsigned long flags; | |
1668 | ||
1669 | spin_lock_irqsave(&pdc_lock, flags); | |
1670 | retval = mem_pdc_call(PDC_PAT_MEM, PDC_PAT_MEM_ADDRESS, | |
1671 | __pa(&pdc_result), phys_addr); | |
1672 | ||
1673 | if (retval == PDC_OK) | |
1674 | memcpy(pret, &pdc_result, sizeof(*pret)); | |
1675 | ||
1676 | spin_unlock_irqrestore(&pdc_lock, flags); | |
1677 | ||
1678 | return retval; | |
1679 | } | |
a8f44e38 | 1680 | #endif /* CONFIG_64BIT */ |
f5213b2c | 1681 | #endif /* defined(BOOTLOADER) */ |
1da177e4 LT |
1682 | |
1683 | ||
1684 | /***************** 32-bit real-mode calls ***********/ | |
1685 | /* The struct below is used | |
1686 | * to overlay real_stack (real2.S), preparing a 32-bit call frame. | |
1687 | * real32_call_asm() then uses this stack in narrow real mode | |
1688 | */ | |
1689 | ||
1690 | struct narrow_stack { | |
1691 | /* use int, not long which is 64 bits */ | |
1692 | unsigned int arg13; | |
1693 | unsigned int arg12; | |
1694 | unsigned int arg11; | |
1695 | unsigned int arg10; | |
1696 | unsigned int arg9; | |
1697 | unsigned int arg8; | |
1698 | unsigned int arg7; | |
1699 | unsigned int arg6; | |
1700 | unsigned int arg5; | |
1701 | unsigned int arg4; | |
1702 | unsigned int arg3; | |
1703 | unsigned int arg2; | |
1704 | unsigned int arg1; | |
1705 | unsigned int arg0; | |
1706 | unsigned int frame_marker[8]; | |
1707 | unsigned int sp; | |
1708 | /* in reality, there's nearly 8k of stack after this */ | |
1709 | }; | |
1710 | ||
1711 | long real32_call(unsigned long fn, ...) | |
1712 | { | |
1713 | va_list args; | |
1714 | extern struct narrow_stack real_stack; | |
1715 | extern unsigned long real32_call_asm(unsigned int *, | |
1716 | unsigned int *, | |
1717 | unsigned int); | |
1718 | ||
1719 | va_start(args, fn); | |
1720 | real_stack.arg0 = va_arg(args, unsigned int); | |
1721 | real_stack.arg1 = va_arg(args, unsigned int); | |
1722 | real_stack.arg2 = va_arg(args, unsigned int); | |
1723 | real_stack.arg3 = va_arg(args, unsigned int); | |
1724 | real_stack.arg4 = va_arg(args, unsigned int); | |
1725 | real_stack.arg5 = va_arg(args, unsigned int); | |
1726 | real_stack.arg6 = va_arg(args, unsigned int); | |
1727 | real_stack.arg7 = va_arg(args, unsigned int); | |
1728 | real_stack.arg8 = va_arg(args, unsigned int); | |
1729 | real_stack.arg9 = va_arg(args, unsigned int); | |
1730 | real_stack.arg10 = va_arg(args, unsigned int); | |
1731 | real_stack.arg11 = va_arg(args, unsigned int); | |
1732 | real_stack.arg12 = va_arg(args, unsigned int); | |
1733 | real_stack.arg13 = va_arg(args, unsigned int); | |
1734 | va_end(args); | |
1735 | ||
1736 | return real32_call_asm(&real_stack.sp, &real_stack.arg0, fn); | |
1737 | } | |
1738 | ||
a8f44e38 | 1739 | #ifdef CONFIG_64BIT |
1da177e4 LT |
1740 | /***************** 64-bit real-mode calls ***********/ |
1741 | ||
1742 | struct wide_stack { | |
1743 | unsigned long arg0; | |
1744 | unsigned long arg1; | |
1745 | unsigned long arg2; | |
1746 | unsigned long arg3; | |
1747 | unsigned long arg4; | |
1748 | unsigned long arg5; | |
1749 | unsigned long arg6; | |
1750 | unsigned long arg7; | |
1751 | unsigned long arg8; | |
1752 | unsigned long arg9; | |
1753 | unsigned long arg10; | |
1754 | unsigned long arg11; | |
1755 | unsigned long arg12; | |
1756 | unsigned long arg13; | |
1757 | unsigned long frame_marker[2]; /* rp, previous sp */ | |
1758 | unsigned long sp; | |
1759 | /* in reality, there's nearly 8k of stack after this */ | |
1760 | }; | |
1761 | ||
1762 | long real64_call(unsigned long fn, ...) | |
1763 | { | |
1764 | va_list args; | |
1765 | extern struct wide_stack real64_stack; | |
1766 | extern unsigned long real64_call_asm(unsigned long *, | |
1767 | unsigned long *, | |
1768 | unsigned long); | |
1769 | ||
1770 | va_start(args, fn); | |
1771 | real64_stack.arg0 = va_arg(args, unsigned long); | |
1772 | real64_stack.arg1 = va_arg(args, unsigned long); | |
1773 | real64_stack.arg2 = va_arg(args, unsigned long); | |
1774 | real64_stack.arg3 = va_arg(args, unsigned long); | |
1775 | real64_stack.arg4 = va_arg(args, unsigned long); | |
1776 | real64_stack.arg5 = va_arg(args, unsigned long); | |
1777 | real64_stack.arg6 = va_arg(args, unsigned long); | |
1778 | real64_stack.arg7 = va_arg(args, unsigned long); | |
1779 | real64_stack.arg8 = va_arg(args, unsigned long); | |
1780 | real64_stack.arg9 = va_arg(args, unsigned long); | |
1781 | real64_stack.arg10 = va_arg(args, unsigned long); | |
1782 | real64_stack.arg11 = va_arg(args, unsigned long); | |
1783 | real64_stack.arg12 = va_arg(args, unsigned long); | |
1784 | real64_stack.arg13 = va_arg(args, unsigned long); | |
1785 | va_end(args); | |
1786 | ||
1787 | return real64_call_asm(&real64_stack.sp, &real64_stack.arg0, fn); | |
1788 | } | |
1789 | ||
a8f44e38 | 1790 | #endif /* CONFIG_64BIT */ |