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

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  1 #ifndef __SPARC_OPENPROM_H
  2 #define __SPARC_OPENPROM_H
  3 
  4 /* openprom.h:  Prom structures and defines for access to the OPENBOOT
  5  *              prom routines and data areas.
  6  *
  7  * Copyright (C) 1995,1996 David S. Miller (davem@caip.rutgers.edu)
  8  */
  9 
 10 /* Empirical constants... */
 11 #define LINUX_OPPROM_MAGIC      0x10010407
 12 
 13 #ifndef __ASSEMBLY__
 14 #include <linux/of.h>
 15 
 16 /* V0 prom device operations. */
 17 struct linux_dev_v0_funcs {
 18         int (*v0_devopen)(char *device_str);
 19         int (*v0_devclose)(int dev_desc);
 20         int (*v0_rdblkdev)(int dev_desc, int num_blks, int blk_st, char *buf);
 21         int (*v0_wrblkdev)(int dev_desc, int num_blks, int blk_st, char *buf);
 22         int (*v0_wrnetdev)(int dev_desc, int num_bytes, char *buf);
 23         int (*v0_rdnetdev)(int dev_desc, int num_bytes, char *buf);
 24         int (*v0_rdchardev)(int dev_desc, int num_bytes, int dummy, char *buf);
 25         int (*v0_wrchardev)(int dev_desc, int num_bytes, int dummy, char *buf);
 26         int (*v0_seekdev)(int dev_desc, long logical_offst, int from);
 27 };
 28 
 29 /* V2 and later prom device operations. */
 30 struct linux_dev_v2_funcs {
 31         phandle (*v2_inst2pkg)(int d);  /* Convert ihandle to phandle */
 32         char * (*v2_dumb_mem_alloc)(char *va, unsigned int sz);
 33         void (*v2_dumb_mem_free)(char *va, unsigned int sz);
 34 
 35         /* To map devices into virtual I/O space. */
 36         char * (*v2_dumb_mmap)(char *virta, int which_io, unsigned int paddr, unsigned int sz);
 37         void (*v2_dumb_munmap)(char *virta, unsigned int size);
 38 
 39         int (*v2_dev_open)(char *devpath);
 40         void (*v2_dev_close)(int d);
 41         int (*v2_dev_read)(int d, char *buf, int nbytes);
 42         int (*v2_dev_write)(int d, const char *buf, int nbytes);
 43         int (*v2_dev_seek)(int d, int hi, int lo);
 44 
 45         /* Never issued (multistage load support) */
 46         void (*v2_wheee2)(void);
 47         void (*v2_wheee3)(void);
 48 };
 49 
 50 struct linux_mlist_v0 {
 51         struct linux_mlist_v0 *theres_more;
 52         unsigned int start_adr;
 53         unsigned int num_bytes;
 54 };
 55 
 56 struct linux_mem_v0 {
 57         struct linux_mlist_v0 **v0_totphys;
 58         struct linux_mlist_v0 **v0_prommap;
 59         struct linux_mlist_v0 **v0_available; /* What we can use */
 60 };
 61 
 62 /* Arguments sent to the kernel from the boot prompt. */
 63 struct linux_arguments_v0 {
 64         char *argv[8];
 65         char args[100];
 66         char boot_dev[2];
 67         int boot_dev_ctrl;
 68         int boot_dev_unit;
 69         int dev_partition;
 70         char *kernel_file_name;
 71         void *aieee1;           /* XXX */
 72 };
 73 
 74 /* V2 and up boot things. */
 75 struct linux_bootargs_v2 {
 76         char **bootpath;
 77         char **bootargs;
 78         int *fd_stdin;
 79         int *fd_stdout;
 80 };
 81 
 82 /* The top level PROM vector. */
 83 struct linux_romvec {
 84         /* Version numbers. */
 85         unsigned int pv_magic_cookie;
 86         unsigned int pv_romvers;
 87         unsigned int pv_plugin_revision;
 88         unsigned int pv_printrev;
 89 
 90         /* Version 0 memory descriptors. */
 91         struct linux_mem_v0 pv_v0mem;
 92 
 93         /* Node operations. */
 94         struct linux_nodeops *pv_nodeops;
 95 
 96         char **pv_bootstr;
 97         struct linux_dev_v0_funcs pv_v0devops;
 98 
 99         char *pv_stdin;
100         char *pv_stdout;
101 #define PROMDEV_KBD     0               /* input from keyboard */
102 #define PROMDEV_SCREEN  0               /* output to screen */
103 #define PROMDEV_TTYA    1               /* in/out to ttya */
104 #define PROMDEV_TTYB    2               /* in/out to ttyb */
105 
106         /* Blocking getchar/putchar.  NOT REENTRANT! (grr) */
107         int (*pv_getchar)(void);
108         void (*pv_putchar)(int ch);
109 
110         /* Non-blocking variants. */
111         int (*pv_nbgetchar)(void);
112         int (*pv_nbputchar)(int ch);
113 
114         void (*pv_putstr)(char *str, int len);
115 
116         /* Miscellany. */
117         void (*pv_reboot)(char *bootstr);
118         void (*pv_printf)(__const__ char *fmt, ...);
119         void (*pv_abort)(void);
120         __volatile__ int *pv_ticks;
121         void (*pv_halt)(void);
122         void (**pv_synchook)(void);
123 
124         /* Evaluate a forth string, not different proto for V0 and V2->up. */
125         union {
126                 void (*v0_eval)(int len, char *str);
127                 void (*v2_eval)(char *str);
128         } pv_fortheval;
129 
130         struct linux_arguments_v0 **pv_v0bootargs;
131 
132         /* Get ether address. */
133         unsigned int (*pv_enaddr)(int d, char *enaddr);
134 
135         struct linux_bootargs_v2 pv_v2bootargs;
136         struct linux_dev_v2_funcs pv_v2devops;
137 
138         int filler[15];
139 
140         /* This one is sun4c/sun4 only. */
141         void (*pv_setctxt)(int ctxt, char *va, int pmeg);
142 
143         /* Prom version 3 Multiprocessor routines. This stuff is crazy.
144          * No joke. Calling these when there is only one cpu probably
145          * crashes the machine, have to test this. :-)
146          */
147 
148         /* v3_cpustart() will start the cpu 'whichcpu' in mmu-context
149          * 'thiscontext' executing at address 'prog_counter'
150          */
151         int (*v3_cpustart)(unsigned int whichcpu, int ctxtbl_ptr,
152                            int thiscontext, char *prog_counter);
153 
154         /* v3_cpustop() will cause cpu 'whichcpu' to stop executing
155          * until a resume cpu call is made.
156          */
157         int (*v3_cpustop)(unsigned int whichcpu);
158 
159         /* v3_cpuidle() will idle cpu 'whichcpu' until a stop or
160          * resume cpu call is made.
161          */
162         int (*v3_cpuidle)(unsigned int whichcpu);
163 
164         /* v3_cpuresume() will resume processor 'whichcpu' executing
165          * starting with whatever 'pc' and 'npc' were left at the
166          * last 'idle' or 'stop' call.
167          */
168         int (*v3_cpuresume)(unsigned int whichcpu);
169 };
170 
171 /* Routines for traversing the prom device tree. */
172 struct linux_nodeops {
173         phandle (*no_nextnode)(phandle node);
174         phandle (*no_child)(phandle node);
175         int (*no_proplen)(phandle node, const char *name);
176         int (*no_getprop)(phandle node, const char *name, char *val);
177         int (*no_setprop)(phandle node, const char *name, char *val, int len);
178         char * (*no_nextprop)(phandle node, char *name);
179 };
180 
181 /* More fun PROM structures for device probing. */
182 #if defined(__sparc__) && defined(__arch64__)
183 #define PROMREG_MAX     24
184 #define PROMVADDR_MAX   16
185 #define PROMINTR_MAX    32
186 #else
187 #define PROMREG_MAX     16
188 #define PROMVADDR_MAX   16
189 #define PROMINTR_MAX    15
190 #endif
191 
192 struct linux_prom_registers {
193         unsigned int which_io;  /* hi part of physical address */
194         unsigned int phys_addr; /* The physical address of this register */
195         unsigned int reg_size;  /* How many bytes does this register take up? */
196 };
197 
198 struct linux_prom64_registers {
199         unsigned long phys_addr;
200         unsigned long reg_size;
201 };
202 
203 struct linux_prom_irqs {
204         int pri;    /* IRQ priority */
205         int vector; /* This is foobar, what does it do? */
206 };
207 
208 /* Element of the "ranges" vector */
209 struct linux_prom_ranges {
210         unsigned int ot_child_space;
211         unsigned int ot_child_base;             /* Bus feels this */
212         unsigned int ot_parent_space;
213         unsigned int ot_parent_base;            /* CPU looks from here */
214         unsigned int or_size;
215 };
216 
217 /*
218  * Ranges and reg properties are a bit different for PCI.
219  */
220 #if defined(__sparc__) && defined(__arch64__)
221 struct linux_prom_pci_registers {
222         unsigned int phys_hi;
223         unsigned int phys_mid;
224         unsigned int phys_lo;
225 
226         unsigned int size_hi;
227         unsigned int size_lo;
228 };
229 #else
230 struct linux_prom_pci_registers {
231         /*
232          * We don't know what information this field contain.
233          * We guess, PCI device function is in bits 15:8
234          * So, ...
235          */
236         unsigned int which_io;  /* Let it be 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 #endif
246 
247 struct linux_prom_pci_ranges {
248         unsigned int child_phys_hi;     /* Only certain bits are encoded here. */
249         unsigned int child_phys_mid;
250         unsigned int child_phys_lo;
251 
252         unsigned int parent_phys_hi;
253         unsigned int parent_phys_lo;
254 
255         unsigned int size_hi;
256         unsigned int size_lo;
257 };
258 
259 struct linux_prom_pci_intmap {
260         unsigned int phys_hi;
261         unsigned int phys_mid;
262         unsigned int phys_lo;
263 
264         unsigned int interrupt;
265 
266         int          cnode;
267         unsigned int cinterrupt;
268 };
269 
270 struct linux_prom_pci_intmask {
271         unsigned int phys_hi;
272         unsigned int phys_mid;
273         unsigned int phys_lo;
274         unsigned int interrupt;
275 };
276 
277 #endif /* !(__ASSEMBLY__) */
278 
279 #endif /* !(__SPARC_OPENPROM_H) */
280 

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