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1da177e4 LT |
1 | /* $Id: openprom.h,v 1.24 2000/06/04 06:23:53 anton Exp $ */ |
2 | #ifndef __SPARC_OPENPROM_H | |
3 | #define __SPARC_OPENPROM_H | |
4 | ||
5 | /* openprom.h: Prom structures and defines for access to the OPENBOOT | |
6 | * prom routines and data areas. | |
7 | * | |
8 | * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) | |
9 | */ | |
10 | ||
11 | #include <asm/vaddrs.h> | |
12 | ||
13 | /* Empirical constants... */ | |
14 | #define LINUX_OPPROM_MAGIC 0x10010407 | |
15 | ||
16 | #ifndef __ASSEMBLY__ | |
17 | /* V0 prom device operations. */ | |
18 | struct linux_dev_v0_funcs { | |
19 | int (*v0_devopen)(char *device_str); | |
20 | int (*v0_devclose)(int dev_desc); | |
21 | int (*v0_rdblkdev)(int dev_desc, int num_blks, int blk_st, char *buf); | |
22 | int (*v0_wrblkdev)(int dev_desc, int num_blks, int blk_st, char *buf); | |
23 | int (*v0_wrnetdev)(int dev_desc, int num_bytes, char *buf); | |
24 | int (*v0_rdnetdev)(int dev_desc, int num_bytes, char *buf); | |
25 | int (*v0_rdchardev)(int dev_desc, int num_bytes, int dummy, char *buf); | |
26 | int (*v0_wrchardev)(int dev_desc, int num_bytes, int dummy, char *buf); | |
27 | int (*v0_seekdev)(int dev_desc, long logical_offst, int from); | |
28 | }; | |
29 | ||
30 | /* V2 and later prom device operations. */ | |
31 | struct linux_dev_v2_funcs { | |
32 | int (*v2_inst2pkg)(int d); /* Convert ihandle to phandle */ | |
33 | char * (*v2_dumb_mem_alloc)(char *va, unsigned sz); | |
34 | void (*v2_dumb_mem_free)(char *va, unsigned sz); | |
35 | ||
36 | /* To map devices into virtual I/O space. */ | |
37 | char * (*v2_dumb_mmap)(char *virta, int which_io, unsigned paddr, unsigned sz); | |
38 | void (*v2_dumb_munmap)(char *virta, unsigned size); | |
39 | ||
40 | int (*v2_dev_open)(char *devpath); | |
41 | void (*v2_dev_close)(int d); | |
42 | int (*v2_dev_read)(int d, char *buf, int nbytes); | |
43 | int (*v2_dev_write)(int d, char *buf, int nbytes); | |
44 | int (*v2_dev_seek)(int d, int hi, int lo); | |
45 | ||
46 | /* Never issued (multistage load support) */ | |
47 | void (*v2_wheee2)(void); | |
48 | void (*v2_wheee3)(void); | |
49 | }; | |
50 | ||
51 | struct linux_mlist_v0 { | |
52 | struct linux_mlist_v0 *theres_more; | |
53 | char *start_adr; | |
54 | unsigned num_bytes; | |
55 | }; | |
56 | ||
57 | struct linux_mem_v0 { | |
58 | struct linux_mlist_v0 **v0_totphys; | |
59 | struct linux_mlist_v0 **v0_prommap; | |
60 | struct linux_mlist_v0 **v0_available; /* What we can use */ | |
61 | }; | |
62 | ||
63 | /* Arguments sent to the kernel from the boot prompt. */ | |
64 | struct linux_arguments_v0 { | |
65 | char *argv[8]; | |
66 | char args[100]; | |
67 | char boot_dev[2]; | |
68 | int boot_dev_ctrl; | |
69 | int boot_dev_unit; | |
70 | int dev_partition; | |
71 | char *kernel_file_name; | |
72 | void *aieee1; /* XXX */ | |
73 | }; | |
74 | ||
75 | /* V2 and up boot things. */ | |
76 | struct linux_bootargs_v2 { | |
77 | char **bootpath; | |
78 | char **bootargs; | |
79 | int *fd_stdin; | |
80 | int *fd_stdout; | |
81 | }; | |
82 | ||
83 | /* The top level PROM vector. */ | |
84 | struct linux_romvec { | |
85 | /* Version numbers. */ | |
86 | unsigned int pv_magic_cookie; | |
87 | unsigned int pv_romvers; | |
88 | unsigned int pv_plugin_revision; | |
89 | unsigned int pv_printrev; | |
90 | ||
91 | /* Version 0 memory descriptors. */ | |
92 | struct linux_mem_v0 pv_v0mem; | |
93 | ||
94 | /* Node operations. */ | |
95 | struct linux_nodeops *pv_nodeops; | |
96 | ||
97 | char **pv_bootstr; | |
98 | struct linux_dev_v0_funcs pv_v0devops; | |
99 | ||
100 | char *pv_stdin; | |
101 | char *pv_stdout; | |
102 | #define PROMDEV_KBD 0 /* input from keyboard */ | |
103 | #define PROMDEV_SCREEN 0 /* output to screen */ | |
104 | #define PROMDEV_TTYA 1 /* in/out to ttya */ | |
105 | #define PROMDEV_TTYB 2 /* in/out to ttyb */ | |
106 | ||
107 | /* Blocking getchar/putchar. NOT REENTRANT! (grr) */ | |
108 | int (*pv_getchar)(void); | |
109 | void (*pv_putchar)(int ch); | |
110 | ||
111 | /* Non-blocking variants. */ | |
112 | int (*pv_nbgetchar)(void); | |
113 | int (*pv_nbputchar)(int ch); | |
114 | ||
115 | void (*pv_putstr)(char *str, int len); | |
116 | ||
117 | /* Miscellany. */ | |
118 | void (*pv_reboot)(char *bootstr); | |
119 | void (*pv_printf)(__const__ char *fmt, ...); | |
120 | void (*pv_abort)(void); | |
121 | __volatile__ int *pv_ticks; | |
122 | void (*pv_halt)(void); | |
123 | void (**pv_synchook)(void); | |
124 | ||
125 | /* Evaluate a forth string, not different proto for V0 and V2->up. */ | |
126 | union { | |
127 | void (*v0_eval)(int len, char *str); | |
128 | void (*v2_eval)(char *str); | |
129 | } pv_fortheval; | |
130 | ||
131 | struct linux_arguments_v0 **pv_v0bootargs; | |
132 | ||
133 | /* Get ether address. */ | |
134 | unsigned int (*pv_enaddr)(int d, char *enaddr); | |
135 | ||
136 | struct linux_bootargs_v2 pv_v2bootargs; | |
137 | struct linux_dev_v2_funcs pv_v2devops; | |
138 | ||
139 | int filler[15]; | |
140 | ||
141 | /* This one is sun4c/sun4 only. */ | |
142 | void (*pv_setctxt)(int ctxt, char *va, int pmeg); | |
143 | ||
144 | /* Prom version 3 Multiprocessor routines. This stuff is crazy. | |
145 | * No joke. Calling these when there is only one cpu probably | |
146 | * crashes the machine, have to test this. :-) | |
147 | */ | |
148 | ||
149 | /* v3_cpustart() will start the cpu 'whichcpu' in mmu-context | |
150 | * 'thiscontext' executing at address 'prog_counter' | |
151 | */ | |
152 | int (*v3_cpustart)(unsigned int whichcpu, int ctxtbl_ptr, | |
153 | int thiscontext, char *prog_counter); | |
154 | ||
155 | /* v3_cpustop() will cause cpu 'whichcpu' to stop executing | |
156 | * until a resume cpu call is made. | |
157 | */ | |
158 | int (*v3_cpustop)(unsigned int whichcpu); | |
159 | ||
160 | /* v3_cpuidle() will idle cpu 'whichcpu' until a stop or | |
161 | * resume cpu call is made. | |
162 | */ | |
163 | int (*v3_cpuidle)(unsigned int whichcpu); | |
164 | ||
165 | /* v3_cpuresume() will resume processor 'whichcpu' executing | |
166 | * starting with whatever 'pc' and 'npc' were left at the | |
167 | * last 'idle' or 'stop' call. | |
168 | */ | |
169 | int (*v3_cpuresume)(unsigned int whichcpu); | |
170 | }; | |
171 | ||
172 | /* Routines for traversing the prom device tree. */ | |
173 | struct linux_nodeops { | |
174 | int (*no_nextnode)(int node); | |
175 | int (*no_child)(int node); | |
176 | int (*no_proplen)(int node, char *name); | |
177 | int (*no_getprop)(int node, char *name, char *val); | |
178 | int (*no_setprop)(int node, char *name, char *val, int len); | |
179 | char * (*no_nextprop)(int node, char *name); | |
180 | }; | |
181 | ||
182 | /* More fun PROM structures for device probing. */ | |
183 | #define PROMREG_MAX 16 | |
184 | #define PROMVADDR_MAX 16 | |
185 | #define PROMINTR_MAX 15 | |
186 | ||
187 | struct linux_prom_registers { | |
188 | unsigned int which_io; /* is this in OBIO space? */ | |
189 | unsigned int phys_addr; /* The physical address of this register */ | |
190 | unsigned int reg_size; /* How many bytes does this register take up? */ | |
191 | }; | |
192 | ||
193 | struct linux_prom_irqs { | |
194 | int pri; /* IRQ priority */ | |
195 | int vector; /* This is foobar, what does it do? */ | |
196 | }; | |
197 | ||
198 | /* Element of the "ranges" vector */ | |
199 | struct linux_prom_ranges { | |
200 | unsigned int ot_child_space; | |
201 | unsigned int ot_child_base; /* Bus feels this */ | |
202 | unsigned int ot_parent_space; | |
203 | unsigned int ot_parent_base; /* CPU looks from here */ | |
204 | unsigned int or_size; | |
205 | }; | |
206 | ||
207 | /* Ranges and reg properties are a bit different for PCI. */ | |
208 | struct linux_prom_pci_registers { | |
209 | /* | |
210 | * We don't know what information this field contain. | |
211 | * We guess, PCI device function is in bits 15:8 | |
212 | * So, ... | |
213 | */ | |
214 | unsigned int which_io; /* Let it be which_io */ | |
215 | ||
216 | unsigned int phys_hi; | |
217 | unsigned int phys_lo; | |
218 | ||
219 | unsigned int size_hi; | |
220 | unsigned int size_lo; | |
221 | }; | |
222 | ||
223 | struct linux_prom_pci_ranges { | |
224 | unsigned int child_phys_hi; /* Only certain bits are encoded here. */ | |
225 | unsigned int child_phys_mid; | |
226 | unsigned int child_phys_lo; | |
227 | ||
228 | unsigned int parent_phys_hi; | |
229 | unsigned int parent_phys_lo; | |
230 | ||
231 | unsigned int size_hi; | |
232 | unsigned int size_lo; | |
233 | }; | |
234 | ||
235 | struct linux_prom_pci_assigned_addresses { | |
236 | unsigned int which_io; | |
237 | ||
238 | unsigned int phys_hi; | |
239 | unsigned int phys_lo; | |
240 | ||
241 | unsigned int size_hi; | |
242 | unsigned int size_lo; | |
243 | }; | |
244 | ||
245 | struct linux_prom_ebus_ranges { | |
246 | unsigned int child_phys_hi; | |
247 | unsigned int child_phys_lo; | |
248 | ||
249 | unsigned int parent_phys_hi; | |
250 | unsigned int parent_phys_mid; | |
251 | unsigned int parent_phys_lo; | |
252 | ||
253 | unsigned int size; | |
254 | }; | |
255 | ||
256 | #endif /* !(__ASSEMBLY__) */ | |
257 | ||
258 | #endif /* !(__SPARC_OPENPROM_H) */ |