1 /* $Id: openprom.h,v 1.9 2001/03/16 10:22:02 davem Exp $ */ 2 #ifndef __SPARC64_OPENPROM_H 3 #define __SPARC64_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) 1996 David S. Miller (davem@caip.rutgers.edu) 9 */ 10 11 #ifndef __ASSEMBLY__ 12 /* V0 prom device operations. */ 13 struct linux_dev_v0_funcs { 14 int (*v0_devopen)(char *device_str); 15 int (*v0_devclose)(int dev_desc); 16 int (*v0_rdblkdev)(int dev_desc, int num_blks, int blk_st, char *buf); 17 int (*v0_wrblkdev)(int dev_desc, int num_blks, int blk_st, char *buf); 18 int (*v0_wrnetdev)(int dev_desc, int num_bytes, char *buf); 19 int (*v0_rdnetdev)(int dev_desc, int num_bytes, char *buf); 20 int (*v0_rdchardev)(int dev_desc, int num_bytes, int dummy, char *buf); 21 int (*v0_wrchardev)(int dev_desc, int num_bytes, int dummy, char *buf); 22 int (*v0_seekdev)(int dev_desc, long logical_offst, int from); 23 }; 24 25 /* V2 and later prom device operations. */ 26 struct linux_dev_v2_funcs { 27 int (*v2_inst2pkg)(int d); /* Convert ihandle to phandle */ 28 char * (*v2_dumb_mem_alloc)(char *va, unsigned sz); 29 void (*v2_dumb_mem_free)(char *va, unsigned sz); 30 31 /* To map devices into virtual I/O space. */ 32 char * (*v2_dumb_mmap)(char *virta, int which_io, unsigned paddr, unsigned sz); 33 void (*v2_dumb_munmap)(char *virta, unsigned size); 34 35 int (*v2_dev_open)(char *devpath); 36 void (*v2_dev_close)(int d); 37 int (*v2_dev_read)(int d, char *buf, int nbytes); 38 int (*v2_dev_write)(int d, char *buf, int nbytes); 39 int (*v2_dev_seek)(int d, int hi, int lo); 40 41 /* Never issued (multistage load support) */ 42 void (*v2_wheee2)(void); 43 void (*v2_wheee3)(void); 44 }; 45 46 struct linux_mlist_v0 { 47 struct linux_mlist_v0 *theres_more; 48 unsigned start_adr; 49 unsigned num_bytes; 50 }; 51 52 struct linux_mem_v0 { 53 struct linux_mlist_v0 **v0_totphys; 54 struct linux_mlist_v0 **v0_prommap; 55 struct linux_mlist_v0 **v0_available; /* What we can use */ 56 }; 57 58 /* Arguments sent to the kernel from the boot prompt. */ 59 struct linux_arguments_v0 { 60 char *argv[8]; 61 char args[100]; 62 char boot_dev[2]; 63 int boot_dev_ctrl; 64 int boot_dev_unit; 65 int dev_partition; 66 char *kernel_file_name; 67 void *aieee1; /* XXX */ 68 }; 69 70 /* V2 and up boot things. */ 71 struct linux_bootargs_v2 { 72 char **bootpath; 73 char **bootargs; 74 int *fd_stdin; 75 int *fd_stdout; 76 }; 77 78 /* The top level PROM vector. */ 79 struct linux_romvec { 80 /* Version numbers. */ 81 unsigned int pv_magic_cookie; 82 unsigned int pv_romvers; 83 unsigned int pv_plugin_revision; 84 unsigned int pv_printrev; 85 86 /* Version 0 memory descriptors. */ 87 struct linux_mem_v0 pv_v0mem; 88 89 /* Node operations. */ 90 struct linux_nodeops *pv_nodeops; 91 92 char **pv_bootstr; 93 struct linux_dev_v0_funcs pv_v0devops; 94 95 char *pv_stdin; 96 char *pv_stdout; 97 #define PROMDEV_KBD 0 /* input from keyboard */ 98 #define PROMDEV_SCREEN 0 /* output to screen */ 99 #define PROMDEV_TTYA 1 /* in/out to ttya */ 100 #define PROMDEV_TTYB 2 /* in/out to ttyb */ 101 102 /* Blocking getchar/putchar. NOT REENTRANT! (grr) */ 103 int (*pv_getchar)(void); 104 void (*pv_putchar)(int ch); 105 106 /* Non-blocking variants. */ 107 int (*pv_nbgetchar)(void); 108 int (*pv_nbputchar)(int ch); 109 110 void (*pv_putstr)(char *str, int len); 111 112 /* Miscellany. */ 113 void (*pv_reboot)(char *bootstr); 114 void (*pv_printf)(__const__ char *fmt, ...); 115 void (*pv_abort)(void); 116 __volatile__ int *pv_ticks; 117 void (*pv_halt)(void); 118 void (**pv_synchook)(void); 119 120 /* Evaluate a forth string, not different proto for V0 and V2->up. */ 121 union { 122 void (*v0_eval)(int len, char *str); 123 void (*v2_eval)(char *str); 124 } pv_fortheval; 125 126 struct linux_arguments_v0 **pv_v0bootargs; 127 128 /* Get ether address. */ 129 unsigned int (*pv_enaddr)(int d, char *enaddr); 130 131 struct linux_bootargs_v2 pv_v2bootargs; 132 struct linux_dev_v2_funcs pv_v2devops; 133 134 int filler[15]; 135 136 /* This one is sun4c/sun4 only. */ 137 void (*pv_setctxt)(int ctxt, char *va, int pmeg); 138 139 /* Prom version 3 Multiprocessor routines. This stuff is crazy. 140 * No joke. Calling these when there is only one cpu probably 141 * crashes the machine, have to test this. :-) 142 */ 143 144 /* v3_cpustart() will start the cpu 'whichcpu' in mmu-context 145 * 'thiscontext' executing at address 'prog_counter' 146 */ 147 int (*v3_cpustart)(unsigned int whichcpu, int ctxtbl_ptr, 148 int thiscontext, char *prog_counter); 149 150 /* v3_cpustop() will cause cpu 'whichcpu' to stop executing 151 * until a resume cpu call is made. 152 */ 153 int (*v3_cpustop)(unsigned int whichcpu); 154 155 /* v3_cpuidle() will idle cpu 'whichcpu' until a stop or 156 * resume cpu call is made. 157 */ 158 int (*v3_cpuidle)(unsigned int whichcpu); 159 160 /* v3_cpuresume() will resume processor 'whichcpu' executing 161 * starting with whatever 'pc' and 'npc' were left at the 162 * last 'idle' or 'stop' call. 163 */ 164 int (*v3_cpuresume)(unsigned int whichcpu); 165 }; 166 167 /* Routines for traversing the prom device tree. */ 168 struct linux_nodeops { 169 int (*no_nextnode)(int node); 170 int (*no_child)(int node); 171 int (*no_proplen)(int node, char *name); 172 int (*no_getprop)(int node, char *name, char *val); 173 int (*no_setprop)(int node, char *name, char *val, int len); 174 char * (*no_nextprop)(int node, char *name); 175 }; 176 177 /* More fun PROM structures for device probing. */ 178 #define PROMREG_MAX 16 179 #define PROMVADDR_MAX 16 180 #define PROMINTR_MAX 15 181 182 struct linux_prom_registers { 183 unsigned which_io; /* hi part of physical address */ 184 unsigned phys_addr; /* The physical address of this register */ 185 int reg_size; /* How many bytes does this register take up? */ 186 }; 187 188 struct linux_prom64_registers { 189 long phys_addr; 190 long reg_size; 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 struct linux_prom64_ranges { 208 unsigned long ot_child_base; /* Bus feels this */ 209 unsigned long ot_parent_base; /* CPU looks from here */ 210 unsigned long or_size; 211 }; 212 213 /* Ranges and reg properties are a bit different for PCI. */ 214 struct linux_prom_pci_registers { 215 unsigned int phys_hi; 216 unsigned int phys_mid; 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_intmap { 236 unsigned int phys_hi; 237 unsigned int phys_mid; 238 unsigned int phys_lo; 239 240 unsigned int interrupt; 241 242 int cnode; 243 unsigned int cinterrupt; 244 }; 245 246 struct linux_prom_pci_intmask { 247 unsigned int phys_hi; 248 unsigned int phys_mid; 249 unsigned int phys_lo; 250 unsigned int interrupt; 251 }; 252 253 struct linux_prom_ebus_ranges { 254 unsigned int child_phys_hi; 255 unsigned int child_phys_lo; 256 257 unsigned int parent_phys_hi; 258 unsigned int parent_phys_mid; 259 unsigned int parent_phys_lo; 260 261 unsigned int size; 262 }; 263 264 struct linux_prom_ebus_intmap { 265 unsigned int phys_hi; 266 unsigned int phys_lo; 267 268 unsigned int interrupt; 269 270 int cnode; 271 unsigned int cinterrupt; 272 }; 273 274 struct linux_prom_ebus_intmask { 275 unsigned int phys_hi; 276 unsigned int phys_lo; 277 unsigned int interrupt; 278 }; 279 #endif /* !(__ASSEMBLY__) */ 280 281 #endif /* !(__SPARC64_OPENPROM_H) */ 282