text: /*
   * 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)
   *
   * 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 <asm/fw/cfe/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))
  
  int cfe_iocb_dispatch(struct cfe_xiocb *xiocb);
  
  /*
   * 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);
  static u64 cfe_handle;
  
  int cfe_init(u64 handle, u64 ept)
  {
  	cfe_dispfunc = NATIVE_FROM_XPTR(ept);
  	cfe_handle = handle;
  	return 0;
  }
  
  int cfe_iocb_dispatch(struct cfe_xiocb * xiocb)
  {
  	if (!cfe_dispfunc)
  		return -1;
  	return (*cfe_dispfunc) ((intptr_t) cfe_handle, (intptr_t) xiocb);
  }
  
  int cfe_close(int handle)
  {
  	struct cfe_xiocb 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;
  
  }
  
  int cfe_cpu_start(int cpu, void (*fn) (void), long sp, long gp, long a1)
  {
  	struct cfe_xiocb xiocb;
  
  	xiocb.xiocb_fcode = CFE_CMD_FW_CPUCTL;
  	xiocb.xiocb_status = 0;
  	xiocb.xiocb_handle = 0;
  	xiocb.xiocb_flags = 0;
  	xiocb.xiocb_psize = sizeof(struct xiocb_cpuctl);
  	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;
  }
  
  int cfe_cpu_stop(int cpu)
  {
  	struct cfe_xiocb xiocb;
  
  	xiocb.xiocb_fcode = CFE_CMD_FW_CPUCTL;
  	xiocb.xiocb_status = 0;
  	xiocb.xiocb_handle = 0;
  	xiocb.xiocb_flags = 0;
  	xiocb.xiocb_psize = sizeof(struct xiocb_cpuctl);
  	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;
  }
  
  int cfe_enumenv(int idx, char *name, int namelen, char *val, int vallen)
  {
  	struct cfe_xiocb xiocb;
  
  	xiocb.xiocb_fcode = CFE_CMD_ENV_SET;
  	xiocb.xiocb_status = 0;
  	xiocb.xiocb_handle = 0;
  	xiocb.xiocb_flags = 0;
  	xiocb.xiocb_psize = sizeof(struct xiocb_envbuf);
  	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;
  }
  
  int
  cfe_enummem(int idx, int flags, u64 *start, u64 *length, u64 *type)
  {
  	struct cfe_xiocb xiocb;
  
  	xiocb.xiocb_fcode = CFE_CMD_FW_MEMENUM;
  	xiocb.xiocb_status = 0;
  	xiocb.xiocb_handle = 0;
  	xiocb.xiocb_flags = flags;
  	xiocb.xiocb_psize = sizeof(struct xiocb_meminfo);
  	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;
  }
  
  int cfe_exit(int warm, int status)
  {
  	struct cfe_xiocb 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(struct xiocb_exitstat);
  	xiocb.plist.xiocb_exitstat.status = status;
  
  	cfe_iocb_dispatch(&xiocb);
  
  	return xiocb.xiocb_status;
  }
  
  int cfe_flushcache(int flg)
  {
  	struct cfe_xiocb 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;
  }
  
  int cfe_getdevinfo(char *name)
  {
  	struct cfe_xiocb xiocb;
  
  	xiocb.xiocb_fcode = CFE_CMD_DEV_GETINFO;
  	xiocb.xiocb_status = 0;
  	xiocb.xiocb_handle = 0;
  	xiocb.xiocb_flags = 0;
  	xiocb.xiocb_psize = sizeof(struct xiocb_buffer);
  	xiocb.plist.xiocb_buffer.buf_offset = 0;
  	xiocb.plist.xiocb_buffer.buf_ptr = XPTR_FROM_NATIVE(name);
  	xiocb.plist.xiocb_buffer.buf_length = strlen(name);
  
  	cfe_iocb_dispatch(&xiocb);
  
  	if (xiocb.xiocb_status < 0)
  		return xiocb.xiocb_status;
  	return xiocb.plist.xiocb_buffer.buf_ioctlcmd;
  }
  
  int cfe_getenv(char *name, char *dest, int destlen)
  {
  	struct cfe_xiocb 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(struct xiocb_envbuf);
  	xiocb.plist.xiocb_envbuf.enum_idx = 0;
  	xiocb.plist.xiocb_envbuf.name_ptr = XPTR_FROM_NATIVE(name);
  	xiocb.plist.xiocb_envbuf.name_length = 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;
  }
  
  int cfe_getfwinfo(cfe_fwinfo_t * info)
  {
  	struct cfe_xiocb xiocb;
  
  	xiocb.xiocb_fcode = CFE_CMD_FW_GETINFO;
  	xiocb.xiocb_status = 0;
  	xiocb.xiocb_handle = 0;
  	xiocb.xiocb_flags = 0;
  	xiocb.xiocb_psize = sizeof(struct xiocb_fwinfo);
  
  	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;
  
  	return 0;
  }
  
  int cfe_getstdhandle(int flg)
  {
  	struct cfe_xiocb 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;
  }
  
  int64_t
  cfe_getticks(void)
  {
  	struct cfe_xiocb xiocb;
  
  	xiocb.xiocb_fcode = CFE_CMD_FW_GETTIME;
  	xiocb.xiocb_status = 0;
  	xiocb.xiocb_handle = 0;
  	xiocb.xiocb_flags = 0;
  	xiocb.xiocb_psize = sizeof(struct xiocb_time);
  	xiocb.plist.xiocb_time.ticks = 0;
  
  	cfe_iocb_dispatch(&xiocb);
  
  	return xiocb.plist.xiocb_time.ticks;
  
  }
  
  int cfe_inpstat(int handle)
  {
  	struct cfe_xiocb xiocb;
  
  	xiocb.xiocb_fcode = CFE_CMD_DEV_INPSTAT;
  	xiocb.xiocb_status = 0;
  	xiocb.xiocb_handle = handle;
  	xiocb.xiocb_flags = 0;
  	xiocb.xiocb_psize = sizeof(struct xiocb_inpstat);
  	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;
  }
  
  int
  cfe_ioctl(int handle, unsigned int ioctlnum, unsigned char *buffer,
  	  int length, int *retlen, u64 offset)
  {
  	struct cfe_xiocb xiocb;
  
  	xiocb.xiocb_fcode = CFE_CMD_DEV_IOCTL;
  	xiocb.xiocb_status = 0;
  	xiocb.xiocb_handle = handle;
  	xiocb.xiocb_flags = 0;
  	xiocb.xiocb_psize = sizeof(struct xiocb_buffer);
  	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;
  }
  
  int cfe_open(char *name)
  {
  	struct cfe_xiocb xiocb;
  
  	xiocb.xiocb_fcode = CFE_CMD_DEV_OPEN;
  	xiocb.xiocb_status = 0;
  	xiocb.xiocb_handle = 0;
  	xiocb.xiocb_flags = 0;
  	xiocb.xiocb_psize = sizeof(struct xiocb_buffer);
  	xiocb.plist.xiocb_buffer.buf_offset = 0;
  	xiocb.plist.xiocb_buffer.buf_ptr = XPTR_FROM_NATIVE(name);
  	xiocb.plist.xiocb_buffer.buf_length = strlen(name);
  
  	cfe_iocb_dispatch(&xiocb);
  
  	if (xiocb.xiocb_status < 0)
  		return xiocb.xiocb_status;
  	return xiocb.xiocb_handle;
  }
  
  int cfe_read(int handle, unsigned char *buffer, int length)
  {
  	return cfe_readblk(handle, 0, buffer, length);
  }
  
  int cfe_readblk(int handle, s64 offset, unsigned char *buffer, int length)
  {
  	struct cfe_xiocb xiocb;
  
  	xiocb.xiocb_fcode = CFE_CMD_DEV_READ;
  	xiocb.xiocb_status = 0;
  	xiocb.xiocb_handle = handle;
  	xiocb.xiocb_flags = 0;
  	xiocb.xiocb_psize = sizeof(struct xiocb_buffer);
  	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;
  }
  
  int cfe_setenv(char *name, char *val)
  {
  	struct cfe_xiocb xiocb;
  
  	xiocb.xiocb_fcode = CFE_CMD_ENV_SET;
  	xiocb.xiocb_status = 0;
  	xiocb.xiocb_handle = 0;
  	xiocb.xiocb_flags = 0;
  	xiocb.xiocb_psize = sizeof(struct xiocb_envbuf);
  	xiocb.plist.xiocb_envbuf.enum_idx = 0;
  	xiocb.plist.xiocb_envbuf.name_ptr = XPTR_FROM_NATIVE(name);
  	xiocb.plist.xiocb_envbuf.name_length = strlen(name);
  	xiocb.plist.xiocb_envbuf.val_ptr = XPTR_FROM_NATIVE(val);
  	xiocb.plist.xiocb_envbuf.val_length = strlen(val);
  
  	cfe_iocb_dispatch(&xiocb);
  
  	return xiocb.xiocb_status;
  }
  
  int cfe_write(int handle, unsigned char *buffer, int length)
  {
  	return cfe_writeblk(handle, 0, buffer, length);
  }
  
  int cfe_writeblk(int handle, s64 offset, unsigned char *buffer, int length)
  {
  	struct cfe_xiocb xiocb;
  
  	xiocb.xiocb_fcode = CFE_CMD_DEV_WRITE;
  	xiocb.xiocb_status = 0;
  	xiocb.xiocb_handle = handle;
  	xiocb.xiocb_flags = 0;
  	xiocb.xiocb_psize = sizeof(struct xiocb_buffer);
  	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;
  }
  