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1da177e4 LT |
1 | /* $Id: oplib.h,v 1.14 2001/12/19 00:29:51 davem Exp $ |
2 | * oplib.h: Describes the interface and available routines in the | |
3 | * Linux Prom library. | |
4 | * | |
5 | * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) | |
6 | * Copyright (C) 1996 Jakub Jelinek (jj@sunsite.mff.cuni.cz) | |
7 | */ | |
8 | ||
9 | #ifndef __SPARC64_OPLIB_H | |
10 | #define __SPARC64_OPLIB_H | |
11 | ||
12 | #include <linux/config.h> | |
13 | #include <asm/openprom.h> | |
14 | ||
90a6646b DM |
15 | /* OBP version string. */ |
16 | extern char prom_version[]; | |
1da177e4 LT |
17 | |
18 | /* Root node of the prom device tree, this stays constant after | |
19 | * initialization is complete. | |
20 | */ | |
21 | extern int prom_root_node; | |
22 | ||
23 | /* PROM stdin and stdout */ | |
24 | extern int prom_stdin, prom_stdout; | |
25 | ||
26 | /* /chosen node of the prom device tree, this stays constant after | |
27 | * initialization is complete. | |
28 | */ | |
29 | extern int prom_chosen_node; | |
30 | ||
bff06d55 | 31 | /* Helper values and strings in arch/sparc64/kernel/head.S */ |
d82ace7d DM |
32 | extern const char prom_peer_name[]; |
33 | extern const char prom_compatible_name[]; | |
34 | extern const char prom_root_compatible[]; | |
bff06d55 DM |
35 | extern const char prom_finddev_name[]; |
36 | extern const char prom_chosen_path[]; | |
37 | extern const char prom_getprop_name[]; | |
38 | extern const char prom_mmu_name[]; | |
39 | extern const char prom_callmethod_name[]; | |
40 | extern const char prom_translate_name[]; | |
41 | extern const char prom_map_name[]; | |
42 | extern const char prom_unmap_name[]; | |
43 | extern int prom_mmu_ihandle_cache; | |
44 | extern unsigned int prom_boot_mapped_pc; | |
45 | extern unsigned int prom_boot_mapping_mode; | |
46 | extern unsigned long prom_boot_mapping_phys_high, prom_boot_mapping_phys_low; | |
47 | ||
1da177e4 LT |
48 | struct linux_mlist_p1275 { |
49 | struct linux_mlist_p1275 *theres_more; | |
50 | unsigned long start_adr; | |
51 | unsigned long num_bytes; | |
52 | }; | |
53 | ||
54 | struct linux_mem_p1275 { | |
55 | struct linux_mlist_p1275 **p1275_totphys; | |
56 | struct linux_mlist_p1275 **p1275_prommap; | |
57 | struct linux_mlist_p1275 **p1275_available; /* What we can use */ | |
58 | }; | |
59 | ||
60 | /* The functions... */ | |
61 | ||
62 | /* You must call prom_init() before using any of the library services, | |
63 | * preferably as early as possible. Pass it the romvec pointer. | |
64 | */ | |
65 | extern void prom_init(void *cif_handler, void *cif_stack); | |
66 | ||
67 | /* Boot argument acquisition, returns the boot command line string. */ | |
68 | extern char *prom_getbootargs(void); | |
69 | ||
70 | /* Device utilities. */ | |
71 | ||
72 | /* Device operations. */ | |
73 | ||
74 | /* Open the device described by the passed string. Note, that the format | |
75 | * of the string is different on V0 vs. V2->higher proms. The caller must | |
76 | * know what he/she is doing! Returns the device descriptor, an int. | |
77 | */ | |
bff06d55 | 78 | extern int prom_devopen(const char *device_string); |
1da177e4 LT |
79 | |
80 | /* Close a previously opened device described by the passed integer | |
81 | * descriptor. | |
82 | */ | |
83 | extern int prom_devclose(int device_handle); | |
84 | ||
85 | /* Do a seek operation on the device described by the passed integer | |
86 | * descriptor. | |
87 | */ | |
88 | extern void prom_seek(int device_handle, unsigned int seek_hival, | |
89 | unsigned int seek_lowval); | |
90 | ||
1da177e4 LT |
91 | /* Miscellaneous routines, don't really fit in any category per se. */ |
92 | ||
93 | /* Reboot the machine with the command line passed. */ | |
bff06d55 | 94 | extern void prom_reboot(const char *boot_command); |
1da177e4 LT |
95 | |
96 | /* Evaluate the forth string passed. */ | |
bff06d55 | 97 | extern void prom_feval(const char *forth_string); |
1da177e4 LT |
98 | |
99 | /* Enter the prom, with possibility of continuation with the 'go' | |
100 | * command in newer proms. | |
101 | */ | |
102 | extern void prom_cmdline(void); | |
103 | ||
104 | /* Enter the prom, with no chance of continuation for the stand-alone | |
105 | * which calls this. | |
106 | */ | |
107 | extern void prom_halt(void) __attribute__ ((noreturn)); | |
108 | ||
109 | /* Halt and power-off the machine. */ | |
110 | extern void prom_halt_power_off(void) __attribute__ ((noreturn)); | |
111 | ||
112 | /* Set the PROM 'sync' callback function to the passed function pointer. | |
113 | * When the user gives the 'sync' command at the prom prompt while the | |
114 | * kernel is still active, the prom will call this routine. | |
115 | * | |
116 | */ | |
117 | typedef int (*callback_func_t)(long *cmd); | |
118 | extern void prom_setcallback(callback_func_t func_ptr); | |
119 | ||
120 | /* Acquire the IDPROM of the root node in the prom device tree. This | |
121 | * gets passed a buffer where you would like it stuffed. The return value | |
122 | * is the format type of this idprom or 0xff on error. | |
123 | */ | |
124 | extern unsigned char prom_get_idprom(char *idp_buffer, int idpbuf_size); | |
125 | ||
1da177e4 LT |
126 | /* Character operations to/from the console.... */ |
127 | ||
128 | /* Non-blocking get character from console. */ | |
129 | extern int prom_nbgetchar(void); | |
130 | ||
131 | /* Non-blocking put character to console. */ | |
132 | extern int prom_nbputchar(char character); | |
133 | ||
134 | /* Blocking get character from console. */ | |
135 | extern char prom_getchar(void); | |
136 | ||
137 | /* Blocking put character to console. */ | |
138 | extern void prom_putchar(char character); | |
139 | ||
140 | /* Prom's internal routines, don't use in kernel/boot code. */ | |
bff06d55 | 141 | extern void prom_printf(const char *fmt, ...); |
1da177e4 LT |
142 | extern void prom_write(const char *buf, unsigned int len); |
143 | ||
144 | /* Query for input device type */ | |
145 | ||
146 | enum prom_input_device { | |
147 | PROMDEV_IKBD, /* input from keyboard */ | |
148 | PROMDEV_ITTYA, /* input from ttya */ | |
149 | PROMDEV_ITTYB, /* input from ttyb */ | |
c126cf80 | 150 | PROMDEV_IRSC, /* input from rsc */ |
1a7a242c | 151 | PROMDEV_IVCONS, /* input from virtual-console */ |
1da177e4 LT |
152 | PROMDEV_I_UNK, |
153 | }; | |
154 | ||
155 | extern enum prom_input_device prom_query_input_device(void); | |
156 | ||
157 | /* Query for output device type */ | |
158 | ||
159 | enum prom_output_device { | |
160 | PROMDEV_OSCREEN, /* to screen */ | |
161 | PROMDEV_OTTYA, /* to ttya */ | |
162 | PROMDEV_OTTYB, /* to ttyb */ | |
c126cf80 | 163 | PROMDEV_ORSC, /* to rsc */ |
1a7a242c | 164 | PROMDEV_OVCONS, /* to virtual-console */ |
1da177e4 LT |
165 | PROMDEV_O_UNK, |
166 | }; | |
167 | ||
168 | extern enum prom_output_device prom_query_output_device(void); | |
169 | ||
170 | /* Multiprocessor operations... */ | |
171 | #ifdef CONFIG_SMP | |
7890f794 DM |
172 | /* Start the CPU with the given device tree node at the passed program |
173 | * counter with the given arg passed in via register %o0. | |
1da177e4 | 174 | */ |
7890f794 DM |
175 | extern void prom_startcpu(int cpunode, unsigned long pc, unsigned long arg); |
176 | ||
177 | /* Start the CPU with the given cpu ID at the passed program | |
178 | * counter with the given arg passed in via register %o0. | |
179 | */ | |
180 | extern void prom_startcpu_cpuid(int cpuid, unsigned long pc, unsigned long arg); | |
181 | ||
182 | /* Stop the CPU with the given cpu ID. */ | |
183 | extern void prom_stopcpu_cpuid(int cpuid); | |
1da177e4 LT |
184 | |
185 | /* Stop the current CPU. */ | |
186 | extern void prom_stopself(void); | |
187 | ||
188 | /* Idle the current CPU. */ | |
189 | extern void prom_idleself(void); | |
190 | ||
191 | /* Resume the CPU with the passed device tree node. */ | |
192 | extern void prom_resumecpu(int cpunode); | |
193 | #endif | |
194 | ||
195 | /* Power management interfaces. */ | |
196 | ||
197 | /* Put the current CPU to sleep. */ | |
198 | extern void prom_sleepself(void); | |
199 | ||
200 | /* Put the entire system to sleep. */ | |
201 | extern int prom_sleepsystem(void); | |
202 | ||
203 | /* Initiate a wakeup event. */ | |
204 | extern int prom_wakeupsystem(void); | |
205 | ||
206 | /* MMU and memory related OBP interfaces. */ | |
207 | ||
208 | /* Get unique string identifying SIMM at given physical address. */ | |
209 | extern int prom_getunumber(int syndrome_code, | |
210 | unsigned long phys_addr, | |
211 | char *buf, int buflen); | |
212 | ||
213 | /* Retain physical memory to the caller across soft resets. */ | |
bff06d55 | 214 | extern unsigned long prom_retain(const char *name, |
1da177e4 LT |
215 | unsigned long pa_low, unsigned long pa_high, |
216 | long size, long align); | |
217 | ||
218 | /* Load explicit I/D TLB entries into the calling processor. */ | |
219 | extern long prom_itlb_load(unsigned long index, | |
220 | unsigned long tte_data, | |
221 | unsigned long vaddr); | |
222 | ||
223 | extern long prom_dtlb_load(unsigned long index, | |
224 | unsigned long tte_data, | |
225 | unsigned long vaddr); | |
226 | ||
227 | /* Map/Unmap client program address ranges. First the format of | |
228 | * the mapping mode argument. | |
229 | */ | |
230 | #define PROM_MAP_WRITE 0x0001 /* Writable */ | |
231 | #define PROM_MAP_READ 0x0002 /* Readable - sw */ | |
232 | #define PROM_MAP_EXEC 0x0004 /* Executable - sw */ | |
233 | #define PROM_MAP_LOCKED 0x0010 /* Locked, use i/dtlb load calls for this instead */ | |
234 | #define PROM_MAP_CACHED 0x0020 /* Cacheable in both L1 and L2 caches */ | |
235 | #define PROM_MAP_SE 0x0040 /* Side-Effects */ | |
236 | #define PROM_MAP_GLOB 0x0080 /* Global */ | |
237 | #define PROM_MAP_IE 0x0100 /* Invert-Endianness */ | |
238 | #define PROM_MAP_DEFAULT (PROM_MAP_WRITE | PROM_MAP_READ | PROM_MAP_EXEC | PROM_MAP_CACHED) | |
239 | ||
240 | extern int prom_map(int mode, unsigned long size, | |
241 | unsigned long vaddr, unsigned long paddr); | |
242 | extern void prom_unmap(unsigned long size, unsigned long vaddr); | |
243 | ||
244 | ||
245 | /* PROM device tree traversal functions... */ | |
246 | ||
247 | #ifdef PROMLIB_INTERNAL | |
248 | ||
249 | /* Internal version of prom_getchild. */ | |
250 | extern int __prom_getchild(int parent_node); | |
251 | ||
252 | /* Internal version of prom_getsibling. */ | |
253 | extern int __prom_getsibling(int node); | |
254 | ||
255 | #endif | |
256 | ||
257 | /* Get the child node of the given node, or zero if no child exists. */ | |
258 | extern int prom_getchild(int parent_node); | |
259 | ||
260 | /* Get the next sibling node of the given node, or zero if no further | |
261 | * siblings exist. | |
262 | */ | |
263 | extern int prom_getsibling(int node); | |
264 | ||
265 | /* Get the length, at the passed node, of the given property type. | |
266 | * Returns -1 on error (ie. no such property at this node). | |
267 | */ | |
bff06d55 | 268 | extern int prom_getproplen(int thisnode, const char *property); |
1da177e4 LT |
269 | |
270 | /* Fetch the requested property using the given buffer. Returns | |
271 | * the number of bytes the prom put into your buffer or -1 on error. | |
272 | */ | |
bff06d55 | 273 | extern int prom_getproperty(int thisnode, const char *property, |
1da177e4 LT |
274 | char *prop_buffer, int propbuf_size); |
275 | ||
276 | /* Acquire an integer property. */ | |
bff06d55 | 277 | extern int prom_getint(int node, const char *property); |
1da177e4 LT |
278 | |
279 | /* Acquire an integer property, with a default value. */ | |
bff06d55 | 280 | extern int prom_getintdefault(int node, const char *property, int defval); |
1da177e4 LT |
281 | |
282 | /* Acquire a boolean property, 0=FALSE 1=TRUE. */ | |
bff06d55 | 283 | extern int prom_getbool(int node, const char *prop); |
1da177e4 LT |
284 | |
285 | /* Acquire a string property, null string on error. */ | |
bff06d55 | 286 | extern void prom_getstring(int node, const char *prop, char *buf, int bufsize); |
1da177e4 LT |
287 | |
288 | /* Does the passed node have the given "name"? YES=1 NO=0 */ | |
bff06d55 | 289 | extern int prom_nodematch(int thisnode, const char *name); |
1da177e4 LT |
290 | |
291 | /* Puts in buffer a prom name in the form name@x,y or name (x for which_io | |
292 | * and y for first regs phys address | |
293 | */ | |
294 | extern int prom_getname(int node, char *buf, int buflen); | |
295 | ||
296 | /* Search all siblings starting at the passed node for "name" matching | |
297 | * the given string. Returns the node on success, zero on failure. | |
298 | */ | |
bff06d55 | 299 | extern int prom_searchsiblings(int node_start, const char *name); |
1da177e4 LT |
300 | |
301 | /* Return the first property type, as a string, for the given node. | |
302 | * Returns a null string on error. Buffer should be at least 32B long. | |
303 | */ | |
304 | extern char *prom_firstprop(int node, char *buffer); | |
305 | ||
306 | /* Returns the next property after the passed property for the given | |
307 | * node. Returns null string on failure. Buffer should be at least 32B long. | |
308 | */ | |
bff06d55 | 309 | extern char *prom_nextprop(int node, const char *prev_property, char *buffer); |
1da177e4 LT |
310 | |
311 | /* Returns 1 if the specified node has given property. */ | |
bff06d55 | 312 | extern int prom_node_has_property(int node, const char *property); |
1da177e4 LT |
313 | |
314 | /* Returns phandle of the path specified */ | |
bff06d55 | 315 | extern int prom_finddevice(const char *name); |
1da177e4 LT |
316 | |
317 | /* Set the indicated property at the given node with the passed value. | |
318 | * Returns the number of bytes of your value that the prom took. | |
319 | */ | |
bff06d55 | 320 | extern int prom_setprop(int node, const char *prop_name, char *prop_value, |
1da177e4 LT |
321 | int value_size); |
322 | ||
bff06d55 | 323 | extern int prom_pathtoinode(const char *path); |
1da177e4 LT |
324 | extern int prom_inst2pkg(int); |
325 | ||
326 | /* CPU probing helpers. */ | |
327 | int cpu_find_by_instance(int instance, int *prom_node, int *mid); | |
328 | int cpu_find_by_mid(int mid, int *prom_node); | |
329 | ||
330 | /* Client interface level routines. */ | |
331 | extern void prom_set_trap_table(unsigned long tba); | |
12eaa328 | 332 | extern void prom_set_trap_table_sun4v(unsigned long tba, unsigned long mmfsa); |
1da177e4 | 333 | |
bff06d55 | 334 | extern long p1275_cmd(const char *, long, ...); |
1da177e4 LT |
335 | |
336 | ||
337 | #if 0 | |
338 | #define P1275_SIZE(x) ((((long)((x) / 32)) << 32) | (x)) | |
339 | #else | |
340 | #define P1275_SIZE(x) x | |
341 | #endif | |
342 | ||
343 | /* We support at most 16 input and 1 output argument */ | |
344 | #define P1275_ARG_NUMBER 0 | |
345 | #define P1275_ARG_IN_STRING 1 | |
346 | #define P1275_ARG_OUT_BUF 2 | |
347 | #define P1275_ARG_OUT_32B 3 | |
348 | #define P1275_ARG_IN_FUNCTION 4 | |
349 | #define P1275_ARG_IN_BUF 5 | |
350 | #define P1275_ARG_IN_64B 6 | |
351 | ||
352 | #define P1275_IN(x) ((x) & 0xf) | |
353 | #define P1275_OUT(x) (((x) << 4) & 0xf0) | |
354 | #define P1275_INOUT(i,o) (P1275_IN(i)|P1275_OUT(o)) | |
355 | #define P1275_ARG(n,x) ((x) << ((n)*3 + 8)) | |
356 | ||
357 | #endif /* !(__SPARC64_OPLIB_H) */ |