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/Ethereal-msm8939-beta9/arch/mips/fw/cfe/cfe_api.c

https://bitbucket.org/MilosStamenkovic95/etherealos
C | 432 lines | 307 code | 89 blank | 36 comment | 10 complexity | 7a55211fd7112e0a87d2e26661df9d77 MD5 | raw file
  1/*
  2 * Copyright (C) 2000, 2001, 2002 Broadcom Corporation
  3 *
  4 * This program is free software; you can redistribute it and/or
  5 * modify it under the terms of the GNU General Public License
  6 * as published by the Free Software Foundation; either version 2
  7 * of the License, or (at your option) any later version.
  8 *
  9 * This program is distributed in the hope that it will be useful,
 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 12 * GNU General Public License for more details.
 13 *
 14 * You should have received a copy of the GNU General Public License
 15 * along with this program; if not, write to the Free Software
 16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 17 */
 18
 19/*
 20 *
 21 * Broadcom Common Firmware Environment (CFE)
 22 *
 23 * This module contains device function stubs (small routines to
 24 * call the standard "iocb" interface entry point to CFE).
 25 * There should be one routine here per iocb function call.
 26 *
 27 * Authors:  Mitch Lichtenberg, Chris Demetriou
 28 */
 29
 30#include <asm/fw/cfe/cfe_api.h>
 31#include "cfe_api_int.h"
 32
 33/* Cast from a native pointer to a cfe_xptr_t and back.	 */
 34#define XPTR_FROM_NATIVE(n)	((cfe_xptr_t) (intptr_t) (n))
 35#define NATIVE_FROM_XPTR(x)	((void *) (intptr_t) (x))
 36
 37int cfe_iocb_dispatch(struct cfe_xiocb *xiocb);
 38
 39/*
 40 * Declare the dispatch function with args of "intptr_t".
 41 * This makes sure whatever model we're compiling in
 42 * puts the pointers in a single register.  For example,
 43 * combining -mlong64 and -mips1 or -mips2 would lead to
 44 * trouble, since the handle and IOCB pointer will be
 45 * passed in two registers each, and CFE expects one.
 46 */
 47
 48static int (*cfe_dispfunc) (intptr_t handle, intptr_t xiocb);
 49static u64 cfe_handle;
 50
 51int cfe_init(u64 handle, u64 ept)
 52{
 53	cfe_dispfunc = NATIVE_FROM_XPTR(ept);
 54	cfe_handle = handle;
 55	return 0;
 56}
 57
 58int cfe_iocb_dispatch(struct cfe_xiocb * xiocb)
 59{
 60	if (!cfe_dispfunc)
 61		return -1;
 62	return (*cfe_dispfunc) ((intptr_t) cfe_handle, (intptr_t) xiocb);
 63}
 64
 65int cfe_close(int handle)
 66{
 67	struct cfe_xiocb xiocb;
 68
 69	xiocb.xiocb_fcode = CFE_CMD_DEV_CLOSE;
 70	xiocb.xiocb_status = 0;
 71	xiocb.xiocb_handle = handle;
 72	xiocb.xiocb_flags = 0;
 73	xiocb.xiocb_psize = 0;
 74
 75	cfe_iocb_dispatch(&xiocb);
 76
 77	return xiocb.xiocb_status;
 78
 79}
 80
 81int cfe_cpu_start(int cpu, void (*fn) (void), long sp, long gp, long a1)
 82{
 83	struct cfe_xiocb xiocb;
 84
 85	xiocb.xiocb_fcode = CFE_CMD_FW_CPUCTL;
 86	xiocb.xiocb_status = 0;
 87	xiocb.xiocb_handle = 0;
 88	xiocb.xiocb_flags = 0;
 89	xiocb.xiocb_psize = sizeof(struct xiocb_cpuctl);
 90	xiocb.plist.xiocb_cpuctl.cpu_number = cpu;
 91	xiocb.plist.xiocb_cpuctl.cpu_command = CFE_CPU_CMD_START;
 92	xiocb.plist.xiocb_cpuctl.gp_val = gp;
 93	xiocb.plist.xiocb_cpuctl.sp_val = sp;
 94	xiocb.plist.xiocb_cpuctl.a1_val = a1;
 95	xiocb.plist.xiocb_cpuctl.start_addr = (long) fn;
 96
 97	cfe_iocb_dispatch(&xiocb);
 98
 99	return xiocb.xiocb_status;
100}
101
102int cfe_cpu_stop(int cpu)
103{
104	struct cfe_xiocb xiocb;
105
106	xiocb.xiocb_fcode = CFE_CMD_FW_CPUCTL;
107	xiocb.xiocb_status = 0;
108	xiocb.xiocb_handle = 0;
109	xiocb.xiocb_flags = 0;
110	xiocb.xiocb_psize = sizeof(struct xiocb_cpuctl);
111	xiocb.plist.xiocb_cpuctl.cpu_number = cpu;
112	xiocb.plist.xiocb_cpuctl.cpu_command = CFE_CPU_CMD_STOP;
113
114	cfe_iocb_dispatch(&xiocb);
115
116	return xiocb.xiocb_status;
117}
118
119int cfe_enumenv(int idx, char *name, int namelen, char *val, int vallen)
120{
121	struct cfe_xiocb xiocb;
122
123	xiocb.xiocb_fcode = CFE_CMD_ENV_SET;
124	xiocb.xiocb_status = 0;
125	xiocb.xiocb_handle = 0;
126	xiocb.xiocb_flags = 0;
127	xiocb.xiocb_psize = sizeof(struct xiocb_envbuf);
128	xiocb.plist.xiocb_envbuf.enum_idx = idx;
129	xiocb.plist.xiocb_envbuf.name_ptr = XPTR_FROM_NATIVE(name);
130	xiocb.plist.xiocb_envbuf.name_length = namelen;
131	xiocb.plist.xiocb_envbuf.val_ptr = XPTR_FROM_NATIVE(val);
132	xiocb.plist.xiocb_envbuf.val_length = vallen;
133
134	cfe_iocb_dispatch(&xiocb);
135
136	return xiocb.xiocb_status;
137}
138
139int
140cfe_enummem(int idx, int flags, u64 *start, u64 *length, u64 *type)
141{
142	struct cfe_xiocb xiocb;
143
144	xiocb.xiocb_fcode = CFE_CMD_FW_MEMENUM;
145	xiocb.xiocb_status = 0;
146	xiocb.xiocb_handle = 0;
147	xiocb.xiocb_flags = flags;
148	xiocb.xiocb_psize = sizeof(struct xiocb_meminfo);
149	xiocb.plist.xiocb_meminfo.mi_idx = idx;
150
151	cfe_iocb_dispatch(&xiocb);
152
153	if (xiocb.xiocb_status < 0)
154		return xiocb.xiocb_status;
155
156	*start = xiocb.plist.xiocb_meminfo.mi_addr;
157	*length = xiocb.plist.xiocb_meminfo.mi_size;
158	*type = xiocb.plist.xiocb_meminfo.mi_type;
159
160	return 0;
161}
162
163int cfe_exit(int warm, int status)
164{
165	struct cfe_xiocb xiocb;
166
167	xiocb.xiocb_fcode = CFE_CMD_FW_RESTART;
168	xiocb.xiocb_status = 0;
169	xiocb.xiocb_handle = 0;
170	xiocb.xiocb_flags = warm ? CFE_FLG_WARMSTART : 0;
171	xiocb.xiocb_psize = sizeof(struct xiocb_exitstat);
172	xiocb.plist.xiocb_exitstat.status = status;
173
174	cfe_iocb_dispatch(&xiocb);
175
176	return xiocb.xiocb_status;
177}
178
179int cfe_flushcache(int flg)
180{
181	struct cfe_xiocb xiocb;
182
183	xiocb.xiocb_fcode = CFE_CMD_FW_FLUSHCACHE;
184	xiocb.xiocb_status = 0;
185	xiocb.xiocb_handle = 0;
186	xiocb.xiocb_flags = flg;
187	xiocb.xiocb_psize = 0;
188
189	cfe_iocb_dispatch(&xiocb);
190
191	return xiocb.xiocb_status;
192}
193
194int cfe_getdevinfo(char *name)
195{
196	struct cfe_xiocb xiocb;
197
198	xiocb.xiocb_fcode = CFE_CMD_DEV_GETINFO;
199	xiocb.xiocb_status = 0;
200	xiocb.xiocb_handle = 0;
201	xiocb.xiocb_flags = 0;
202	xiocb.xiocb_psize = sizeof(struct xiocb_buffer);
203	xiocb.plist.xiocb_buffer.buf_offset = 0;
204	xiocb.plist.xiocb_buffer.buf_ptr = XPTR_FROM_NATIVE(name);
205	xiocb.plist.xiocb_buffer.buf_length = strlen(name);
206
207	cfe_iocb_dispatch(&xiocb);
208
209	if (xiocb.xiocb_status < 0)
210		return xiocb.xiocb_status;
211	return xiocb.plist.xiocb_buffer.buf_ioctlcmd;
212}
213
214int cfe_getenv(char *name, char *dest, int destlen)
215{
216	struct cfe_xiocb xiocb;
217
218	*dest = 0;
219
220	xiocb.xiocb_fcode = CFE_CMD_ENV_GET;
221	xiocb.xiocb_status = 0;
222	xiocb.xiocb_handle = 0;
223	xiocb.xiocb_flags = 0;
224	xiocb.xiocb_psize = sizeof(struct xiocb_envbuf);
225	xiocb.plist.xiocb_envbuf.enum_idx = 0;
226	xiocb.plist.xiocb_envbuf.name_ptr = XPTR_FROM_NATIVE(name);
227	xiocb.plist.xiocb_envbuf.name_length = strlen(name);
228	xiocb.plist.xiocb_envbuf.val_ptr = XPTR_FROM_NATIVE(dest);
229	xiocb.plist.xiocb_envbuf.val_length = destlen;
230
231	cfe_iocb_dispatch(&xiocb);
232
233	return xiocb.xiocb_status;
234}
235
236int cfe_getfwinfo(cfe_fwinfo_t * info)
237{
238	struct cfe_xiocb xiocb;
239
240	xiocb.xiocb_fcode = CFE_CMD_FW_GETINFO;
241	xiocb.xiocb_status = 0;
242	xiocb.xiocb_handle = 0;
243	xiocb.xiocb_flags = 0;
244	xiocb.xiocb_psize = sizeof(struct xiocb_fwinfo);
245
246	cfe_iocb_dispatch(&xiocb);
247
248	if (xiocb.xiocb_status < 0)
249		return xiocb.xiocb_status;
250
251	info->fwi_version = xiocb.plist.xiocb_fwinfo.fwi_version;
252	info->fwi_totalmem = xiocb.plist.xiocb_fwinfo.fwi_totalmem;
253	info->fwi_flags = xiocb.plist.xiocb_fwinfo.fwi_flags;
254	info->fwi_boardid = xiocb.plist.xiocb_fwinfo.fwi_boardid;
255	info->fwi_bootarea_va = xiocb.plist.xiocb_fwinfo.fwi_bootarea_va;
256	info->fwi_bootarea_pa = xiocb.plist.xiocb_fwinfo.fwi_bootarea_pa;
257	info->fwi_bootarea_size =
258	    xiocb.plist.xiocb_fwinfo.fwi_bootarea_size;
259#if 0
260	info->fwi_reserved1 = xiocb.plist.xiocb_fwinfo.fwi_reserved1;
261	info->fwi_reserved2 = xiocb.plist.xiocb_fwinfo.fwi_reserved2;
262	info->fwi_reserved3 = xiocb.plist.xiocb_fwinfo.fwi_reserved3;
263#endif
264
265	return 0;
266}
267
268int cfe_getstdhandle(int flg)
269{
270	struct cfe_xiocb xiocb;
271
272	xiocb.xiocb_fcode = CFE_CMD_DEV_GETHANDLE;
273	xiocb.xiocb_status = 0;
274	xiocb.xiocb_handle = 0;
275	xiocb.xiocb_flags = flg;
276	xiocb.xiocb_psize = 0;
277
278	cfe_iocb_dispatch(&xiocb);
279
280	if (xiocb.xiocb_status < 0)
281		return xiocb.xiocb_status;
282	return xiocb.xiocb_handle;
283}
284
285int64_t
286cfe_getticks(void)
287{
288	struct cfe_xiocb xiocb;
289
290	xiocb.xiocb_fcode = CFE_CMD_FW_GETTIME;
291	xiocb.xiocb_status = 0;
292	xiocb.xiocb_handle = 0;
293	xiocb.xiocb_flags = 0;
294	xiocb.xiocb_psize = sizeof(struct xiocb_time);
295	xiocb.plist.xiocb_time.ticks = 0;
296
297	cfe_iocb_dispatch(&xiocb);
298
299	return xiocb.plist.xiocb_time.ticks;
300
301}
302
303int cfe_inpstat(int handle)
304{
305	struct cfe_xiocb xiocb;
306
307	xiocb.xiocb_fcode = CFE_CMD_DEV_INPSTAT;
308	xiocb.xiocb_status = 0;
309	xiocb.xiocb_handle = handle;
310	xiocb.xiocb_flags = 0;
311	xiocb.xiocb_psize = sizeof(struct xiocb_inpstat);
312	xiocb.plist.xiocb_inpstat.inp_status = 0;
313
314	cfe_iocb_dispatch(&xiocb);
315
316	if (xiocb.xiocb_status < 0)
317		return xiocb.xiocb_status;
318	return xiocb.plist.xiocb_inpstat.inp_status;
319}
320
321int
322cfe_ioctl(int handle, unsigned int ioctlnum, unsigned char *buffer,
323	  int length, int *retlen, u64 offset)
324{
325	struct cfe_xiocb xiocb;
326
327	xiocb.xiocb_fcode = CFE_CMD_DEV_IOCTL;
328	xiocb.xiocb_status = 0;
329	xiocb.xiocb_handle = handle;
330	xiocb.xiocb_flags = 0;
331	xiocb.xiocb_psize = sizeof(struct xiocb_buffer);
332	xiocb.plist.xiocb_buffer.buf_offset = offset;
333	xiocb.plist.xiocb_buffer.buf_ioctlcmd = ioctlnum;
334	xiocb.plist.xiocb_buffer.buf_ptr = XPTR_FROM_NATIVE(buffer);
335	xiocb.plist.xiocb_buffer.buf_length = length;
336
337	cfe_iocb_dispatch(&xiocb);
338
339	if (retlen)
340		*retlen = xiocb.plist.xiocb_buffer.buf_retlen;
341	return xiocb.xiocb_status;
342}
343
344int cfe_open(char *name)
345{
346	struct cfe_xiocb xiocb;
347
348	xiocb.xiocb_fcode = CFE_CMD_DEV_OPEN;
349	xiocb.xiocb_status = 0;
350	xiocb.xiocb_handle = 0;
351	xiocb.xiocb_flags = 0;
352	xiocb.xiocb_psize = sizeof(struct xiocb_buffer);
353	xiocb.plist.xiocb_buffer.buf_offset = 0;
354	xiocb.plist.xiocb_buffer.buf_ptr = XPTR_FROM_NATIVE(name);
355	xiocb.plist.xiocb_buffer.buf_length = strlen(name);
356
357	cfe_iocb_dispatch(&xiocb);
358
359	if (xiocb.xiocb_status < 0)
360		return xiocb.xiocb_status;
361	return xiocb.xiocb_handle;
362}
363
364int cfe_read(int handle, unsigned char *buffer, int length)
365{
366	return cfe_readblk(handle, 0, buffer, length);
367}
368
369int cfe_readblk(int handle, s64 offset, unsigned char *buffer, int length)
370{
371	struct cfe_xiocb xiocb;
372
373	xiocb.xiocb_fcode = CFE_CMD_DEV_READ;
374	xiocb.xiocb_status = 0;
375	xiocb.xiocb_handle = handle;
376	xiocb.xiocb_flags = 0;
377	xiocb.xiocb_psize = sizeof(struct xiocb_buffer);
378	xiocb.plist.xiocb_buffer.buf_offset = offset;
379	xiocb.plist.xiocb_buffer.buf_ptr = XPTR_FROM_NATIVE(buffer);
380	xiocb.plist.xiocb_buffer.buf_length = length;
381
382	cfe_iocb_dispatch(&xiocb);
383
384	if (xiocb.xiocb_status < 0)
385		return xiocb.xiocb_status;
386	return xiocb.plist.xiocb_buffer.buf_retlen;
387}
388
389int cfe_setenv(char *name, char *val)
390{
391	struct cfe_xiocb xiocb;
392
393	xiocb.xiocb_fcode = CFE_CMD_ENV_SET;
394	xiocb.xiocb_status = 0;
395	xiocb.xiocb_handle = 0;
396	xiocb.xiocb_flags = 0;
397	xiocb.xiocb_psize = sizeof(struct xiocb_envbuf);
398	xiocb.plist.xiocb_envbuf.enum_idx = 0;
399	xiocb.plist.xiocb_envbuf.name_ptr = XPTR_FROM_NATIVE(name);
400	xiocb.plist.xiocb_envbuf.name_length = strlen(name);
401	xiocb.plist.xiocb_envbuf.val_ptr = XPTR_FROM_NATIVE(val);
402	xiocb.plist.xiocb_envbuf.val_length = strlen(val);
403
404	cfe_iocb_dispatch(&xiocb);
405
406	return xiocb.xiocb_status;
407}
408
409int cfe_write(int handle, unsigned char *buffer, int length)
410{
411	return cfe_writeblk(handle, 0, buffer, length);
412}
413
414int cfe_writeblk(int handle, s64 offset, unsigned char *buffer, int length)
415{
416	struct cfe_xiocb xiocb;
417
418	xiocb.xiocb_fcode = CFE_CMD_DEV_WRITE;
419	xiocb.xiocb_status = 0;
420	xiocb.xiocb_handle = handle;
421	xiocb.xiocb_flags = 0;
422	xiocb.xiocb_psize = sizeof(struct xiocb_buffer);
423	xiocb.plist.xiocb_buffer.buf_offset = offset;
424	xiocb.plist.xiocb_buffer.buf_ptr = XPTR_FROM_NATIVE(buffer);
425	xiocb.plist.xiocb_buffer.buf_length = length;
426
427	cfe_iocb_dispatch(&xiocb);
428
429	if (xiocb.xiocb_status < 0)
430		return xiocb.xiocb_status;
431	return xiocb.plist.xiocb_buffer.buf_retlen;
432}