io.h
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:9k
- #ifndef _ASM_CRIS_IO_H
- #define _ASM_CRIS_IO_H
- #include <asm/page.h> /* for __va, __pa */
- #include <asm/svinto.h>
- #include <linux/config.h>
- /* Console I/O for simulated etrax100. Use #ifdef so erroneous
- use will be evident. */
- #ifdef CONFIG_SVINTO_SIM
- /* Let's use the ucsim interface since it lets us do write(2, ...) */
- #define SIMCOUT(s,len)
- asm ("moveq 4,$r9 nt"
- "moveq 2,$r10 nt"
- "move.d %0,$r11 nt"
- "move.d %1,$r12 nt"
- "push $irp nt"
- "move 0f,$irp nt"
- "jump -6809 n"
- "0: nt"
- "pop $irp"
- : : "rm" (s), "rm" (len) : "r9","r10","r11","r12","memory")
- #define TRACE_ON() __extension__
- ({ int _Foofoo; __asm__ volatile ("bmod [%0],%0" : "=r" (_Foofoo) : "0"
- (255)); _Foofoo; })
- #define TRACE_OFF() do { __asm__ volatile ("bmod [%0],%0" :: "r" (254)); } while (0)
- #define SIM_END() do { __asm__ volatile ("bmod [%0],%0" :: "r" (28)); } while (0)
- #define CRIS_CYCLES() __extension__
- ({ unsigned long c; asm ("bmod [%1],%0" : "=r" (c) : "r" (27)); c;})
- #else /* ! defined CONFIG_SVINTO_SIM */
- /* FIXME: Is there a reliable cycle counter available in some chip? Use
- that then. */
- #define CRIS_CYCLES() 0
- #endif /* ! defined CONFIG_SVINTO_SIM */
- /* Etrax shadow registers - which live in arch/cris/kernel/shadows.c */
- extern unsigned long port_g_data_shadow;
- extern unsigned char port_pa_dir_shadow;
- extern unsigned char port_pa_data_shadow;
- extern unsigned char port_pb_i2c_shadow;
- extern unsigned char port_pb_config_shadow;
- extern unsigned char port_pb_dir_shadow;
- extern unsigned char port_pb_data_shadow;
- extern unsigned long r_timer_ctrl_shadow;
- extern unsigned long port_cse1_shadow;
- extern unsigned long port_csp0_shadow;
- extern unsigned long port_csp4_shadow;
- extern volatile unsigned long *port_cse1_addr;
- extern volatile unsigned long *port_csp0_addr;
- extern volatile unsigned long *port_csp4_addr;
- /* macro for setting regs through a shadow -
- * r = register name (like R_PORT_PA_DATA)
- * s = shadow name (like port_pa_data_shadow)
- * b = bit number
- * v = value (0 or 1)
- */
- #define REG_SHADOW_SET(r,s,b,v) *r = s = (s & ~(1 << (b))) | ((v) << (b))
- /* The LED's on various Etrax-based products are set differently. */
- #if defined(CONFIG_ETRAX_NO_LEDS) || defined(CONFIG_SVINTO_SIM)
- #undef CONFIG_ETRAX_PA_LEDS
- #undef CONFIG_ETRAX_PB_LEDS
- #undef CONFIG_ETRAX_CSP0_LEDS
- #define LED_NETWORK_SET_G(x)
- #define LED_NETWORK_SET_R(x)
- #define LED_ACTIVE_SET_G(x)
- #define LED_ACTIVE_SET_R(x)
- #define LED_DISK_WRITE(x)
- #define LED_DISK_READ(x)
- #endif
- #if !defined(CONFIG_ETRAX_CSP0_LEDS)
- #define LED_BIT_SET(x)
- #define LED_BIT_CLR(x)
- #endif
- #define LED_OFF 0x00
- #define LED_GREEN 0x01
- #define LED_RED 0x02
- #define LED_ORANGE (LED_GREEN | LED_RED)
- #if CONFIG_ETRAX_LED1G == CONFIG_ETRAX_LED1R
- #define LED_NETWORK_SET(x)
- do {
- LED_NETWORK_SET_G((x) & LED_GREEN);
- } while (0)
- #else
- #define LED_NETWORK_SET(x)
- do {
- LED_NETWORK_SET_G((x) & LED_GREEN);
- LED_NETWORK_SET_R((x) & LED_RED);
- } while (0)
- #endif
- #if CONFIG_ETRAX_LED2G == CONFIG_ETRAX_LED2R
- #define LED_ACTIVE_SET(x)
- do {
- LED_ACTIVE_SET_G((x) & LED_GREEN);
- } while (0)
- #else
- #define LED_ACTIVE_SET(x)
- do {
- LED_ACTIVE_SET_G((x) & LED_GREEN);
- LED_ACTIVE_SET_R((x) & LED_RED);
- } while (0)
- #endif
- #ifdef CONFIG_ETRAX_PA_LEDS
- #define LED_NETWORK_SET_G(x)
- REG_SHADOW_SET(R_PORT_PA_DATA, port_pa_data_shadow, CONFIG_ETRAX_LED1G, !(x))
- #define LED_NETWORK_SET_R(x)
- REG_SHADOW_SET(R_PORT_PA_DATA, port_pa_data_shadow, CONFIG_ETRAX_LED1R, !(x))
- #define LED_ACTIVE_SET_G(x)
- REG_SHADOW_SET(R_PORT_PA_DATA, port_pa_data_shadow, CONFIG_ETRAX_LED2G, !(x))
- #define LED_ACTIVE_SET_R(x)
- REG_SHADOW_SET(R_PORT_PA_DATA, port_pa_data_shadow, CONFIG_ETRAX_LED2R, !(x))
- #define LED_DISK_WRITE(x)
- do{
- REG_SHADOW_SET(R_PORT_PA_DATA, port_pa_data_shadow, CONFIG_ETRAX_LED3G, !(x));
- REG_SHADOW_SET(R_PORT_PA_DATA, port_pa_data_shadow, CONFIG_ETRAX_LED3R, !(x));
- }while(0)
- #define LED_DISK_READ(x)
- REG_SHADOW_SET(R_PORT_PA_DATA, port_pa_data_shadow, CONFIG_ETRAX_LED3G, !(x))
- #endif
- #ifdef CONFIG_ETRAX_PB_LEDS
- #define LED_NETWORK_SET_G(x)
- REG_SHADOW_SET(R_PORT_PB_DATA, port_pb_data_shadow, CONFIG_ETRAX_LED1G, !(x))
- #define LED_NETWORK_SET_R(x)
- REG_SHADOW_SET(R_PORT_PB_DATA, port_pb_data_shadow, CONFIG_ETRAX_LED1R, !(x))
- #define LED_ACTIVE_SET_G(x)
- REG_SHADOW_SET(R_PORT_PB_DATA, port_pb_data_shadow, CONFIG_ETRAX_LED2G, !(x))
- #define LED_ACTIVE_SET_R(x)
- REG_SHADOW_SET(R_PORT_PB_DATA, port_pb_data_shadow, CONFIG_ETRAX_LED2R, !(x))
- #define LED_DISK_WRITE(x)
- do{
- REG_SHADOW_SET(R_PORT_PB_DATA, port_pb_data_shadow, CONFIG_ETRAX_LED3G, !(x));
- REG_SHADOW_SET(R_PORT_PB_DATA, port_pb_data_shadow, CONFIG_ETRAX_LED3R, !(x));
- }while(0)
- #define LED_DISK_READ(x)
- REG_SHADOW_SET(R_PORT_PB_DATA, port_pb_data_shadow, CONFIG_ETRAX_LED3G, !(x))
- #endif
- #ifdef CONFIG_ETRAX_CSP0_LEDS
- #define CONFIGURABLE_LEDS
- ((1 << CONFIG_ETRAX_LED1G ) | (1 << CONFIG_ETRAX_LED1R ) |
- (1 << CONFIG_ETRAX_LED2G ) | (1 << CONFIG_ETRAX_LED2R ) |
- (1 << CONFIG_ETRAX_LED3G ) | (1 << CONFIG_ETRAX_LED3R ) |
- (1 << CONFIG_ETRAX_LED4G ) | (1 << CONFIG_ETRAX_LED4R ) |
- (1 << CONFIG_ETRAX_LED5G ) | (1 << CONFIG_ETRAX_LED5R ) |
- (1 << CONFIG_ETRAX_LED6G ) | (1 << CONFIG_ETRAX_LED6R ) |
- (1 << CONFIG_ETRAX_LED7G ) | (1 << CONFIG_ETRAX_LED7R ) |
- (1 << CONFIG_ETRAX_LED8Y ) | (1 << CONFIG_ETRAX_LED9Y ) |
- (1 << CONFIG_ETRAX_LED10Y ) |(1 << CONFIG_ETRAX_LED11Y )|
- (1 << CONFIG_ETRAX_LED12R ))
- #define LED_NETWORK_SET_G(x)
- REG_SHADOW_SET(port_csp0_addr, port_csp0_shadow, CONFIG_ETRAX_LED1G, !(x))
- #define LED_NETWORK_SET_R(x)
- REG_SHADOW_SET(port_csp0_addr, port_csp0_shadow, CONFIG_ETRAX_LED1R, !(x))
- #define LED_ACTIVE_SET_G(x)
- REG_SHADOW_SET(port_csp0_addr, port_csp0_shadow, CONFIG_ETRAX_LED2G, !(x))
- #define LED_ACTIVE_SET_R(x)
- REG_SHADOW_SET(port_csp0_addr, port_csp0_shadow, CONFIG_ETRAX_LED2R, !(x))
- #define LED_DISK_WRITE(x)
- do{
- REG_SHADOW_SET(port_csp0_addr, port_csp0_shadow, CONFIG_ETRAX_LED3G, !(x));
- REG_SHADOW_SET(port_csp0_addr, port_csp0_shadow, CONFIG_ETRAX_LED3R, !(x));
- }while(0)
- #define LED_DISK_READ(x)
- REG_SHADOW_SET(port_csp0_addr, port_csp0_shadow, CONFIG_ETRAX_LED3G, !(x))
- #define LED_BIT_SET(x)
- do{
- if((( 1 << x) & CONFIGURABLE_LEDS) != 0)
- REG_SHADOW_SET(port_csp0_addr, port_csp0_shadow, x, 1);
- }while(0)
- #define LED_BIT_CLR(x)
- do{
- if((( 1 << x) & CONFIGURABLE_LEDS) != 0)
- REG_SHADOW_SET(port_csp0_addr, port_csp0_shadow, x, 0);
- }while(0)
- #endif
- #
- #ifdef CONFIG_ETRAX_SOFT_SHUTDOWN
- #define SOFT_SHUTDOWN()
- REG_SHADOW_SET(port_csp0_addr, port_csp0_shadow, CONFIG_ETRAX_SHUTDOWN_BIT, 1)
- #else
- #define SOFT_SHUTDOWN()
- #endif
- /*
- * Change virtual addresses to physical addresses and vv.
- */
- static inline unsigned long virt_to_phys(volatile void * address)
- {
- return __pa(address);
- }
- static inline void * phys_to_virt(unsigned long address)
- {
- return __va(address);
- }
- extern void * __ioremap(unsigned long offset, unsigned long size, unsigned long flags);
- extern inline void * ioremap (unsigned long offset, unsigned long size)
- {
- return __ioremap(offset, size, 0);
- }
- /*
- * IO bus memory addresses are also 1:1 with the physical address
- */
- #define virt_to_bus virt_to_phys
- #define bus_to_virt phys_to_virt
- /*
- * readX/writeX() are used to access memory mapped devices. On some
- * architectures the memory mapped IO stuff needs to be accessed
- * differently. On the CRIS architecture, we just read/write the
- * memory location directly.
- */
- #define readb(addr) (*(volatile unsigned char *) (addr))
- #define readw(addr) (*(volatile unsigned short *) (addr))
- #define readl(addr) (*(volatile unsigned int *) (addr))
- #define writeb(b,addr) ((*(volatile unsigned char *) (addr)) = (b))
- #define writew(b,addr) ((*(volatile unsigned short *) (addr)) = (b))
- #define writel(b,addr) ((*(volatile unsigned int *) (addr)) = (b))
- #define memset_io(a,b,c) memset((void *)(a),(b),(c))
- #define memcpy_fromio(a,b,c) memcpy((a),(void *)(b),(c))
- #define memcpy_toio(a,b,c) memcpy((void *)(a),(b),(c))
- /*
- * Again, CRIS does not require mem IO specific function.
- */
- #define eth_io_copy_and_sum(a,b,c,d) eth_copy_and_sum((a),(void *)(b),(c),(d))
- /* The following is junk needed for the arch-independant code but which
- * we never use in the CRIS port
- */
- #define IO_SPACE_LIMIT 0xffff
- #define inb(x) (0)
- #define outb(x,y)
- #define outw(x,y)
- #define outl(x,y)
- #define insb(x,y,z)
- #define insw(x,y,z)
- #define insl(x,y,z)
- #define outsb(x,y,z)
- #define outsw(x,y,z)
- #define outsl(x,y,z)
- #endif