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Linux/arch/sparc/include/asm/oplib_64.h

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  1 /* oplib.h:  Describes the interface and available routines in the
  2  *           Linux Prom library.
  3  *
  4  * Copyright (C) 1995, 2007 David S. Miller (davem@davemloft.net)
  5  * Copyright (C) 1996 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
  6  */
  7 
  8 #ifndef __SPARC64_OPLIB_H
  9 #define __SPARC64_OPLIB_H
 10 
 11 #include <asm/openprom.h>
 12 
 13 /* OBP version string. */
 14 extern char prom_version[];
 15 
 16 /* Root node of the prom device tree, this stays constant after
 17  * initialization is complete.
 18  */
 19 extern phandle prom_root_node;
 20 
 21 /* PROM stdout */
 22 extern int prom_stdout;
 23 
 24 /* /chosen node of the prom device tree, this stays constant after
 25  * initialization is complete.
 26  */
 27 extern phandle prom_chosen_node;
 28 
 29 /* Helper values and strings in arch/sparc64/kernel/head.S */
 30 extern const char prom_peer_name[];
 31 extern const char prom_compatible_name[];
 32 extern const char prom_root_compatible[];
 33 extern const char prom_cpu_compatible[];
 34 extern const char prom_finddev_name[];
 35 extern const char prom_chosen_path[];
 36 extern const char prom_cpu_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 
 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 /* Miscellaneous routines, don't really fit in any category per se. */
 71 
 72 /* Reboot the machine with the command line passed. */
 73 extern void prom_reboot(const char *boot_command);
 74 
 75 /* Evaluate the forth string passed. */
 76 extern void prom_feval(const char *forth_string);
 77 
 78 /* Enter the prom, with possibility of continuation with the 'go'
 79  * command in newer proms.
 80  */
 81 extern void prom_cmdline(void);
 82 
 83 /* Enter the prom, with no chance of continuation for the stand-alone
 84  * which calls this.
 85  */
 86 extern void prom_halt(void) __attribute__ ((noreturn));
 87 
 88 /* Halt and power-off the machine. */
 89 extern void prom_halt_power_off(void) __attribute__ ((noreturn));
 90 
 91 /* Acquire the IDPROM of the root node in the prom device tree.  This
 92  * gets passed a buffer where you would like it stuffed.  The return value
 93  * is the format type of this idprom or 0xff on error.
 94  */
 95 extern unsigned char prom_get_idprom(char *idp_buffer, int idpbuf_size);
 96 
 97 /* Write a buffer of characters to the console. */
 98 extern void prom_console_write_buf(const char *buf, int len);
 99 
100 /* Prom's internal routines, don't use in kernel/boot code. */
101 extern __printf(1, 2) void prom_printf(const char *fmt, ...);
102 extern void prom_write(const char *buf, unsigned int len);
103 
104 /* Multiprocessor operations... */
105 #ifdef CONFIG_SMP
106 /* Start the CPU with the given device tree node at the passed program
107  * counter with the given arg passed in via register %o0.
108  */
109 extern void prom_startcpu(int cpunode, unsigned long pc, unsigned long arg);
110 
111 /* Start the CPU with the given cpu ID at the passed program
112  * counter with the given arg passed in via register %o0.
113  */
114 extern void prom_startcpu_cpuid(int cpuid, unsigned long pc, unsigned long arg);
115 
116 /* Stop the CPU with the given cpu ID.  */
117 extern void prom_stopcpu_cpuid(int cpuid);
118 
119 /* Stop the current CPU. */
120 extern void prom_stopself(void);
121 
122 /* Idle the current CPU. */
123 extern void prom_idleself(void);
124 
125 /* Resume the CPU with the passed device tree node. */
126 extern void prom_resumecpu(int cpunode);
127 #endif
128 
129 /* Power management interfaces. */
130 
131 /* Put the current CPU to sleep. */
132 extern void prom_sleepself(void);
133 
134 /* Put the entire system to sleep. */
135 extern int prom_sleepsystem(void);
136 
137 /* Initiate a wakeup event. */
138 extern int prom_wakeupsystem(void);
139 
140 /* MMU and memory related OBP interfaces. */
141 
142 /* Get unique string identifying SIMM at given physical address. */
143 extern int prom_getunumber(int syndrome_code,
144                            unsigned long phys_addr,
145                            char *buf, int buflen);
146 
147 /* Retain physical memory to the caller across soft resets. */
148 extern int prom_retain(const char *name, unsigned long size,
149                        unsigned long align, unsigned long *paddr);
150 
151 /* Load explicit I/D TLB entries into the calling processor. */
152 extern long prom_itlb_load(unsigned long index,
153                            unsigned long tte_data,
154                            unsigned long vaddr);
155 
156 extern long prom_dtlb_load(unsigned long index,
157                            unsigned long tte_data,
158                            unsigned long vaddr);
159 
160 /* Map/Unmap client program address ranges.  First the format of
161  * the mapping mode argument.
162  */
163 #define PROM_MAP_WRITE  0x0001 /* Writable */
164 #define PROM_MAP_READ   0x0002 /* Readable - sw */
165 #define PROM_MAP_EXEC   0x0004 /* Executable - sw */
166 #define PROM_MAP_LOCKED 0x0010 /* Locked, use i/dtlb load calls for this instead */
167 #define PROM_MAP_CACHED 0x0020 /* Cacheable in both L1 and L2 caches */
168 #define PROM_MAP_SE     0x0040 /* Side-Effects */
169 #define PROM_MAP_GLOB   0x0080 /* Global */
170 #define PROM_MAP_IE     0x0100 /* Invert-Endianness */
171 #define PROM_MAP_DEFAULT (PROM_MAP_WRITE | PROM_MAP_READ | PROM_MAP_EXEC | PROM_MAP_CACHED)
172 
173 extern int prom_map(int mode, unsigned long size,
174                     unsigned long vaddr, unsigned long paddr);
175 extern void prom_unmap(unsigned long size, unsigned long vaddr);
176 
177 
178 /* PROM device tree traversal functions... */
179 
180 /* Get the child node of the given node, or zero if no child exists. */
181 extern phandle prom_getchild(phandle parent_node);
182 
183 /* Get the next sibling node of the given node, or zero if no further
184  * siblings exist.
185  */
186 extern phandle prom_getsibling(phandle node);
187 
188 /* Get the length, at the passed node, of the given property type.
189  * Returns -1 on error (ie. no such property at this node).
190  */
191 extern int prom_getproplen(phandle thisnode, const char *property);
192 
193 /* Fetch the requested property using the given buffer.  Returns
194  * the number of bytes the prom put into your buffer or -1 on error.
195  */
196 extern int prom_getproperty(phandle thisnode, const char *property,
197                             char *prop_buffer, int propbuf_size);
198 
199 /* Acquire an integer property. */
200 extern int prom_getint(phandle node, const char *property);
201 
202 /* Acquire an integer property, with a default value. */
203 extern int prom_getintdefault(phandle node, const char *property, int defval);
204 
205 /* Acquire a boolean property, 0=FALSE 1=TRUE. */
206 extern int prom_getbool(phandle node, const char *prop);
207 
208 /* Acquire a string property, null string on error. */
209 extern void prom_getstring(phandle node, const char *prop, char *buf,
210                            int bufsize);
211 
212 /* Does the passed node have the given "name"? YES=1 NO=0 */
213 extern int prom_nodematch(phandle thisnode, const char *name);
214 
215 /* Search all siblings starting at the passed node for "name" matching
216  * the given string.  Returns the node on success, zero on failure.
217  */
218 extern phandle prom_searchsiblings(phandle node_start, const char *name);
219 
220 /* Return the first property type, as a string, for the given node.
221  * Returns a null string on error. Buffer should be at least 32B long.
222  */
223 extern char *prom_firstprop(phandle node, char *buffer);
224 
225 /* Returns the next property after the passed property for the given
226  * node.  Returns null string on failure. Buffer should be at least 32B long.
227  */
228 extern char *prom_nextprop(phandle node, const char *prev_property, char *buf);
229 
230 /* Returns 1 if the specified node has given property. */
231 extern int prom_node_has_property(phandle node, const char *property);
232 
233 /* Returns phandle of the path specified */
234 extern phandle prom_finddevice(const char *name);
235 
236 /* Set the indicated property at the given node with the passed value.
237  * Returns the number of bytes of your value that the prom took.
238  */
239 extern int prom_setprop(phandle node, const char *prop_name, char *prop_value,
240                         int value_size);
241 
242 extern phandle prom_inst2pkg(int);
243 extern void prom_sun4v_guest_soft_state(void);
244 
245 extern int prom_ihandle2path(int handle, char *buffer, int bufsize);
246 
247 /* Client interface level routines. */
248 extern void p1275_cmd_direct(unsigned long *);
249 
250 #endif /* !(__SPARC64_OPLIB_H) */
251 

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