arch/cris/arch-v10/kernel/shadows.c

   1 /* $Id: shadows.c,v 1.1 2001/12/17 13:59:27 bjornw Exp $
   2  *
   3  * Various shadow registers. Defines for these are in include/asm-etrax100/io.h
   4  */
   5
   6 /* Shadows for internal Etrax-registers */
   7
   8 unsigned long genconfig_shadow;
   9 unsigned long port_g_data_shadow;
  10 unsigned char port_pa_dir_shadow;
  11 unsigned char port_pa_data_shadow;
  12 unsigned char port_pb_i2c_shadow;
  13 unsigned char port_pb_config_shadow;
  14 unsigned char port_pb_dir_shadow;
  15 unsigned char port_pb_data_shadow;
  16 unsigned long r_timer_ctrl_shadow;
  17
  18 /* Shadows for external I/O port registers.
  19  * These are only usable if there actually IS a latch connected
  20  * to the corresponding external chip-select pin.
  21  *
  22  * A common usage is that CSP0 controls LED's and CSP4 video chips.
  23  */
  24
  25 unsigned long port_cse1_shadow;
  26 unsigned long port_csp0_shadow;
  27 unsigned long port_csp4_shadow;
  28
  29 /* Corresponding addresses for the ports.
  30  * These are initialized in arch/cris/mm/init.c using ioremap.
  31  */
  32
  33 volatile unsigned long *port_cse1_addr;
  34 volatile unsigned long *port_csp0_addr;
  35 volatile unsigned long *port_csp4_addr;
  36