cfe_api.c

LINUX 2.6.17.4的源码

/*
 * Copyright (C) 2000, 2001, 2002 Broadcom Corporation
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

/*  *********************************************************************
    *
    *  Broadcom Common Firmware Environment (CFE)
    *
    *  Device Function stubs			File: cfe_api.c
    *
    *  This module contains device function stubs (small routines to
    *  call the standard "iocb" interface entry point to CFE).
    *  There should be one routine here per iocb function call.
    *
    *  Authors:  Mitch Lichtenberg, Chris Demetriou
    *
    ********************************************************************* */

#include "cfe_api.h"
#include "cfe_api_int.h"

/* Cast from a native pointer to a cfe_xptr_t and back.	 */
#define XPTR_FROM_NATIVE(n)	((cfe_xptr_t) (intptr_t) (n))
#define NATIVE_FROM_XPTR(x)	((void *) (intptr_t) (x))

#ifdef CFE_API_IMPL_NAMESPACE
#define cfe_iocb_dispatch(a)		__cfe_iocb_dispatch(a)
#endif
int cfe_iocb_dispatch(cfe_xiocb_t * xiocb);

#if defined(CFE_API_common) || defined(CFE_API_ALL)
/*
 * Declare the dispatch function with args of "intptr_t".
 * This makes sure whatever model we're compiling in
 * puts the pointers in a single register.  For example,
 * combining -mlong64 and -mips1 or -mips2 would lead to
 * trouble, since the handle and IOCB pointer will be
 * passed in two registers each, and CFE expects one.
 */

static int (*cfe_dispfunc) (intptr_t handle, intptr_t xiocb) = 0;
static cfe_xuint_t cfe_handle = 0;

int cfe_init(cfe_xuint_t handle, cfe_xuint_t ept)
{
	cfe_dispfunc = NATIVE_FROM_XPTR(ept);
	cfe_handle = handle;
	return 0;
}

int cfe_iocb_dispatch(cfe_xiocb_t * xiocb)
{
	if (!cfe_dispfunc)
		return -1;
	return (*cfe_dispfunc) ((intptr_t) cfe_handle, (intptr_t) xiocb);
}
#endif				/* CFE_API_common || CFE_API_ALL */

#if defined(CFE_API_close) || defined(CFE_API_ALL)
int cfe_close(int handle)
{
	cfe_xiocb_t xiocb;

	xiocb.xiocb_fcode = CFE_CMD_DEV_CLOSE;
	xiocb.xiocb_status = 0;
	xiocb.xiocb_handle = handle;
	xiocb.xiocb_flags = 0;
	xiocb.xiocb_psize = 0;

	cfe_iocb_dispatch(&xiocb);

	return xiocb.xiocb_status;

}
#endif				/* CFE_API_close || CFE_API_ALL */

#if defined(CFE_API_cpu_start) || defined(CFE_API_ALL)
int cfe_cpu_start(int cpu, void (*fn) (void), long sp, long gp, long a1)
{
	cfe_xiocb_t xiocb;

	xiocb.xiocb_fcode = CFE_CMD_FW_CPUCTL;
	xiocb.xiocb_status = 0;
	xiocb.xiocb_handle = 0;
	xiocb.xiocb_flags = 0;
	xiocb.xiocb_psize = sizeof(xiocb_cpuctl_t);
	xiocb.plist.xiocb_cpuctl.cpu_number = cpu;
	xiocb.plist.xiocb_cpuctl.cpu_command = CFE_CPU_CMD_START;
	xiocb.plist.xiocb_cpuctl.gp_val = gp;
	xiocb.plist.xiocb_cpuctl.sp_val = sp;
	xiocb.plist.xiocb_cpuctl.a1_val = a1;
	xiocb.plist.xiocb_cpuctl.start_addr = (long) fn;

	cfe_iocb_dispatch(&xiocb);

	return xiocb.xiocb_status;
}
#endif				/* CFE_API_cpu_start || CFE_API_ALL */

#if defined(CFE_API_cpu_stop) || defined(CFE_API_ALL)
int cfe_cpu_stop(int cpu)
{
	cfe_xiocb_t xiocb;

	xiocb.xiocb_fcode = CFE_CMD_FW_CPUCTL;
	xiocb.xiocb_status = 0;
	xiocb.xiocb_handle = 0;
	xiocb.xiocb_flags = 0;
	xiocb.xiocb_psize = sizeof(xiocb_cpuctl_t);
	xiocb.plist.xiocb_cpuctl.cpu_number = cpu;
	xiocb.plist.xiocb_cpuctl.cpu_command = CFE_CPU_CMD_STOP;

	cfe_iocb_dispatch(&xiocb);

	return xiocb.xiocb_status;
}
#endif				/* CFE_API_cpu_stop || CFE_API_ALL */

#if defined(CFE_API_enumenv) || defined(CFE_API_ALL)
int cfe_enumenv(int idx, char *name, int namelen, char *val, int vallen)
{
	cfe_xiocb_t xiocb;

	xiocb.xiocb_fcode = CFE_CMD_ENV_SET;
	xiocb.xiocb_status = 0;
	xiocb.xiocb_handle = 0;
	xiocb.xiocb_flags = 0;
	xiocb.xiocb_psize = sizeof(xiocb_envbuf_t);
	xiocb.plist.xiocb_envbuf.enum_idx = idx;
	xiocb.plist.xiocb_envbuf.name_ptr = XPTR_FROM_NATIVE(name);
	xiocb.plist.xiocb_envbuf.name_length = namelen;
	xiocb.plist.xiocb_envbuf.val_ptr = XPTR_FROM_NATIVE(val);
	xiocb.plist.xiocb_envbuf.val_length = vallen;

	cfe_iocb_dispatch(&xiocb);

	return xiocb.xiocb_status;
}
#endif				/* CFE_API_enumenv || CFE_API_ALL */

#if defined(CFE_API_enummem) || defined(CFE_API_ALL)
int
cfe_enummem(int idx, int flags, cfe_xuint_t * start, cfe_xuint_t * length,
	    cfe_xuint_t * type)
{
	cfe_xiocb_t xiocb;

	xiocb.xiocb_fcode = CFE_CMD_FW_MEMENUM;
	xiocb.xiocb_status = 0;
	xiocb.xiocb_handle = 0;
	xiocb.xiocb_flags = flags;
	xiocb.xiocb_psize = sizeof(xiocb_meminfo_t);
	xiocb.plist.xiocb_meminfo.mi_idx = idx;

	cfe_iocb_dispatch(&xiocb);

	if (xiocb.xiocb_status < 0)
		return xiocb.xiocb_status;

	*start = xiocb.plist.xiocb_meminfo.mi_addr;
	*length = xiocb.plist.xiocb_meminfo.mi_size;
	*type = xiocb.plist.xiocb_meminfo.mi_type;

	return 0;
}
#endif				/* CFE_API_enummem || CFE_API_ALL */

#if defined(CFE_API_exit) || defined(CFE_API_ALL)
int cfe_exit(int warm, int status)
{
	cfe_xiocb_t xiocb;

	xiocb.xiocb_fcode = CFE_CMD_FW_RESTART;
	xiocb.xiocb_status = 0;
	xiocb.xiocb_handle = 0;
	xiocb.xiocb_flags = warm ? CFE_FLG_WARMSTART : 0;
	xiocb.xiocb_psize = sizeof(xiocb_exitstat_t);
	xiocb.plist.xiocb_exitstat.status = status;

	cfe_iocb_dispatch(&xiocb);

	return xiocb.xiocb_status;
}
#endif				/* CFE_API_exit || CFE_API_ALL */

#if defined(CFE_API_flushcache) || defined(CFE_API_ALL)
int cfe_flushcache(int flg)
{
	cfe_xiocb_t xiocb;

	xiocb.xiocb_fcode = CFE_CMD_FW_FLUSHCACHE;
	xiocb.xiocb_status = 0;
	xiocb.xiocb_handle = 0;
	xiocb.xiocb_flags = flg;
	xiocb.xiocb_psize = 0;

	cfe_iocb_dispatch(&xiocb);

	return xiocb.xiocb_status;
}
#endif				/* CFE_API_flushcache || CFE_API_ALL */

#if defined(CFE_API_getdevinfo) || defined(CFE_API_ALL)
int cfe_getdevinfo(char *name)
{
	cfe_xiocb_t xiocb;

	xiocb.xiocb_fcode = CFE_CMD_DEV_GETINFO;
	xiocb.xiocb_status = 0;
	xiocb.xiocb_handle = 0;
	xiocb.xiocb_flags = 0;
	xiocb.xiocb_psize = sizeof(xiocb_buffer_t);
	xiocb.plist.xiocb_buffer.buf_offset = 0;
	xiocb.plist.xiocb_buffer.buf_ptr = XPTR_FROM_NATIVE(name);
	xiocb.plist.xiocb_buffer.buf_length = cfe_strlen(name);

	cfe_iocb_dispatch(&xiocb);

	if (xiocb.xiocb_status < 0)
		return xiocb.xiocb_status;
	return xiocb.plist.xiocb_buffer.buf_devflags;
}
#endif				/* CFE_API_getdevinfo || CFE_API_ALL */

#if defined(CFE_API_getenv) || defined(CFE_API_ALL)
int cfe_getenv(char *name, char *dest, int destlen)
{
	cfe_xiocb_t xiocb;

	*dest = 0;

	xiocb.xiocb_fcode = CFE_CMD_ENV_GET;
	xiocb.xiocb_status = 0;
	xiocb.xiocb_handle = 0;
	xiocb.xiocb_flags = 0;
	xiocb.xiocb_psize = sizeof(xiocb_envbuf_t);
	xiocb.plist.xiocb_envbuf.enum_idx = 0;
	xiocb.plist.xiocb_envbuf.name_ptr = XPTR_FROM_NATIVE(name);
	xiocb.plist.xiocb_envbuf.name_length = cfe_strlen(name);
	xiocb.plist.xiocb_envbuf.val_ptr = XPTR_FROM_NATIVE(dest);
	xiocb.plist.xiocb_envbuf.val_length = destlen;

	cfe_iocb_dispatch(&xiocb);

	return xiocb.xiocb_status;
}
#endif				/* CFE_API_getenv || CFE_API_ALL */

#if defined(CFE_API_getfwinfo) || defined(CFE_API_ALL)
int cfe_getfwinfo(cfe_fwinfo_t * info)
{
	cfe_xiocb_t xiocb;

	xiocb.xiocb_fcode = CFE_CMD_FW_GETINFO;
	xiocb.xiocb_status = 0;
	xiocb.xiocb_handle = 0;
	xiocb.xiocb_flags = 0;
	xiocb.xiocb_psize = sizeof(xiocb_fwinfo_t);

	cfe_iocb_dispatch(&xiocb);

	if (xiocb.xiocb_status < 0)
		return xiocb.xiocb_status;

	info->fwi_version = xiocb.plist.xiocb_fwinfo.fwi_version;
	info->fwi_totalmem = xiocb.plist.xiocb_fwinfo.fwi_totalmem;
	info->fwi_flags = xiocb.plist.xiocb_fwinfo.fwi_flags;
	info->fwi_boardid = xiocb.plist.xiocb_fwinfo.fwi_boardid;
	info->fwi_bootarea_va = xiocb.plist.xiocb_fwinfo.fwi_bootarea_va;
	info->fwi_bootarea_pa = xiocb.plist.xiocb_fwinfo.fwi_bootarea_pa;
	info->fwi_bootarea_size =
	    xiocb.plist.xiocb_fwinfo.fwi_bootarea_size;
#if 0
	info->fwi_reserved1 = xiocb.plist.xiocb_fwinfo.fwi_reserved1;
	info->fwi_reserved2 = xiocb.plist.xiocb_fwinfo.fwi_reserved2;
	info->fwi_reserved3 = xiocb.plist.xiocb_fwinfo.fwi_reserved3;
#endif

	return 0;
}
#endif				/* CFE_API_getfwinfo || CFE_API_ALL */

#if defined(CFE_API_getstdhandle) || defined(CFE_API_ALL)
int cfe_getstdhandle(int flg)
{
	cfe_xiocb_t xiocb;

	xiocb.xiocb_fcode = CFE_CMD_DEV_GETHANDLE;
	xiocb.xiocb_status = 0;
	xiocb.xiocb_handle = 0;
	xiocb.xiocb_flags = flg;
	xiocb.xiocb_psize = 0;

	cfe_iocb_dispatch(&xiocb);

	if (xiocb.xiocb_status < 0)
		return xiocb.xiocb_status;
	return xiocb.xiocb_handle;
}
#endif				/* CFE_API_getstdhandle || CFE_API_ALL */

#if defined(CFE_API_getticks) || defined(CFE_API_ALL)
int64_t
#ifdef CFE_API_IMPL_NAMESPACE
__cfe_getticks(void)
#else
cfe_getticks(void)
#endif
{
	cfe_xiocb_t xiocb;

	xiocb.xiocb_fcode = CFE_CMD_FW_GETTIME;
	xiocb.xiocb_status = 0;
	xiocb.xiocb_handle = 0;
	xiocb.xiocb_flags = 0;
	xiocb.xiocb_psize = sizeof(xiocb_time_t);
	xiocb.plist.xiocb_time.ticks = 0;

	cfe_iocb_dispatch(&xiocb);

	return xiocb.plist.xiocb_time.ticks;

}
#endif				/* CFE_API_getticks || CFE_API_ALL */

#if defined(CFE_API_inpstat) || defined(CFE_API_ALL)
int cfe_inpstat(int handle)
{
	cfe_xiocb_t xiocb;

	xiocb.xiocb_fcode = CFE_CMD_DEV_INPSTAT;
	xiocb.xiocb_status = 0;
	xiocb.xiocb_handle = handle;
	xiocb.xiocb_flags = 0;
	xiocb.xiocb_psize = sizeof(xiocb_inpstat_t);
	xiocb.plist.xiocb_inpstat.inp_status = 0;

	cfe_iocb_dispatch(&xiocb);

	if (xiocb.xiocb_status < 0)
		return xiocb.xiocb_status;
	return xiocb.plist.xiocb_inpstat.inp_status;
}
#endif				/* CFE_API_inpstat || CFE_API_ALL */

#if defined(CFE_API_ioctl) || defined(CFE_API_ALL)
int
cfe_ioctl(int handle, unsigned int ioctlnum, unsigned char *buffer,
	  int length, int *retlen, cfe_xuint_t offset)
{
	cfe_xiocb_t xiocb;

	xiocb.xiocb_fcode = CFE_CMD_DEV_IOCTL;
	xiocb.xiocb_status = 0;
	xiocb.xiocb_handle = handle;
	xiocb.xiocb_flags = 0;
	xiocb.xiocb_psize = sizeof(xiocb_buffer_t);
	xiocb.plist.xiocb_buffer.buf_offset = offset;
	xiocb.plist.xiocb_buffer.buf_ioctlcmd = ioctlnum;
	xiocb.plist.xiocb_buffer.buf_ptr = XPTR_FROM_NATIVE(buffer);
	xiocb.plist.xiocb_buffer.buf_length = length;

	cfe_iocb_dispatch(&xiocb);

	if (retlen)
		*retlen = xiocb.plist.xiocb_buffer.buf_retlen;
	return xiocb.xiocb_status;
}
#endif				/* CFE_API_ioctl || CFE_API_ALL */

#if defined(CFE_API_open) || defined(CFE_API_ALL)
int cfe_open(char *name)
{
	cfe_xiocb_t xiocb;

	xiocb.xiocb_fcode = CFE_CMD_DEV_OPEN;
	xiocb.xiocb_status = 0;
	xiocb.xiocb_handle = 0;
	xiocb.xiocb_flags = 0;
	xiocb.xiocb_psize = sizeof(xiocb_buffer_t);
	xiocb.plist.xiocb_buffer.buf_offset = 0;
	xiocb.plist.xiocb_buffer.buf_ptr = XPTR_FROM_NATIVE(name);
	xiocb.plist.xiocb_buffer.buf_length = cfe_strlen(name);

	cfe_iocb_dispatch(&xiocb);

	if (xiocb.xiocb_status < 0)
		return xiocb.xiocb_status;
	return xiocb.xiocb_handle;
}
#endif				/* CFE_API_open || CFE_API_ALL */

#if defined(CFE_API_read) || defined(CFE_API_ALL)
int cfe_read(int handle, unsigned char *buffer, int length)
{
	return cfe_readblk(handle, 0, buffer, length);
}
#endif				/* CFE_API_read || CFE_API_ALL */

#if defined(CFE_API_readblk) || defined(CFE_API_ALL)
int
cfe_readblk(int handle, cfe_xint_t offset, unsigned char *buffer,
	    int length)
{
	cfe_xiocb_t xiocb;

	xiocb.xiocb_fcode = CFE_CMD_DEV_READ;
	xiocb.xiocb_status = 0;
	xiocb.xiocb_handle = handle;
	xiocb.xiocb_flags = 0;
	xiocb.xiocb_psize = sizeof(xiocb_buffer_t);
	xiocb.plist.xiocb_buffer.buf_offset = offset;
	xiocb.plist.xiocb_buffer.buf_ptr = XPTR_FROM_NATIVE(buffer);
	xiocb.plist.xiocb_buffer.buf_length = length;

	cfe_iocb_dispatch(&xiocb);

	if (xiocb.xiocb_status < 0)
		return xiocb.xiocb_status;
	return xiocb.plist.xiocb_buffer.buf_retlen;
}
#endif				/* CFE_API_readblk || CFE_API_ALL */

#if defined(CFE_API_setenv) || defined(CFE_API_ALL)
int cfe_setenv(char *name, char *val)
{
	cfe_xiocb_t xiocb;

	xiocb.xiocb_fcode = CFE_CMD_ENV_SET;
	xiocb.xiocb_status = 0;
	xiocb.xiocb_handle = 0;
	xiocb.xiocb_flags = 0;
	xiocb.xiocb_psize = sizeof(xiocb_envbuf_t);
	xiocb.plist.xiocb_envbuf.enum_idx = 0;
	xiocb.plist.xiocb_envbuf.name_ptr = XPTR_FROM_NATIVE(name);
	xiocb.plist.xiocb_envbuf.name_length = cfe_strlen(name);
	xiocb.plist.xiocb_envbuf.val_ptr = XPTR_FROM_NATIVE(val);
	xiocb.plist.xiocb_envbuf.val_length = cfe_strlen(val);

	cfe_iocb_dispatch(&xiocb);

	return xiocb.xiocb_status;
}
#endif				/* CFE_API_setenv || CFE_API_ALL */

#if (defined(CFE_API_strlen) || defined(CFE_API_ALL)) \
    && !defined(CFE_API_STRLEN_CUSTOM)
int cfe_strlen(char *name)
{
	int count = 0;

	while (*name++)
		count++;

	return count;
}
#endif				/* CFE_API_strlen || CFE_API_ALL */

#if defined(CFE_API_write) || defined(CFE_API_ALL)
int cfe_write(int handle, unsigned char *buffer, int length)
{
	return cfe_writeblk(handle, 0, buffer, length);
}
#endif				/* CFE_API_write || CFE_API_ALL */

#if defined(CFE_API_writeblk) || defined(CFE_API_ALL)
int
cfe_writeblk(int handle, cfe_xint_t offset, unsigned char *buffer,
	     int length)
{
	cfe_xiocb_t xiocb;

	xiocb.xiocb_fcode = CFE_CMD_DEV_WRITE;
	xiocb.xiocb_status = 0;
	xiocb.xiocb_handle = handle;
	xiocb.xiocb_flags = 0;
	xiocb.xiocb_psize = sizeof(xiocb_buffer_t);
	xiocb.plist.xiocb_buffer.buf_offset = offset;
	xiocb.plist.xiocb_buffer.buf_ptr = XPTR_FROM_NATIVE(buffer);
	xiocb.plist.xiocb_buffer.buf_length = length;

	cfe_iocb_dispatch(&xiocb);

	if (xiocb.xiocb_status < 0)
		return xiocb.xiocb_status;
	return xiocb.plist.xiocb_buffer.buf_retlen;
}
#endif				/* CFE_API_writeblk || CFE_API_ALL */