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