shadows.c
上传用户:jlfgdled
上传日期:2013-04-10
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文件大小:1k
- /* $Id: shadows.c,v 1.2 2001/03/15 14:25:16 bjornw Exp $
- *
- * Various shadow registers. Defines for these are in include/asm-etrax100/io.h
- */
- /* Shadows for internal Etrax-registers */
- unsigned long genconfig_shadow;
- unsigned long port_g_data_shadow;
- unsigned char port_pa_dir_shadow;
- unsigned char port_pa_data_shadow;
- unsigned char port_pb_i2c_shadow;
- unsigned char port_pb_config_shadow;
- unsigned char port_pb_dir_shadow;
- unsigned char port_pb_data_shadow;
- unsigned long r_timer_ctrl_shadow;
- /* Shadows for external I/O port registers.
- * These are only usable if there actually IS a latch connected
- * to the corresponding external chip-select pin.
- *
- * A common usage is that CSP0 controls LED's and CSP4 video chips.
- */
- unsigned long port_cse1_shadow;
- unsigned long port_csp0_shadow;
- unsigned long port_csp4_shadow;
- /* Corresponding addresses for the ports.
- * These are initialized in arch/cris/mm/init.c using ioremap.
- */
- volatile unsigned long *port_cse1_addr;
- volatile unsigned long *port_csp0_addr;
- volatile unsigned long *port_csp4_addr;