target/linux/rb532-2.6/files/include/asm-mips/rc32434/rc32434.h

   1 /*
   2  ***************************************************************************
   3  * Definitions for IDT RC323434 CPU.
   4  *
   5  ****************************************************************************
   6  * Kiran Rao
   7  *
   8  * Original form
   9  ****************************************************************************
  10  * P. Sadik   Oct 08, 2003
  11  *
  12  * Started revision history
  13  * Made IDT_BUS_FREQ a kernel configuration parameter
  14  ****************************************************************************
  15  * P. Sadik   Oct 10, 2003
  16  *
  17  * Removed IDT_BUS_FREQ, since this parameter is no longer required. Instead
  18  * idt_cpu_freq is used everywhere
  19  ****************************************************************************
  20  * P. Sadik   Oct 20, 2003
  21  *
  22  * Removed RC32434_BASE_BAUD
  23  ****************************************************************************
  24 */
  25 #ifndef _RC32434_H_
  26 #define _RC32434_H_
  27
  28 #include <linux/autoconf.h>
  29 #include <linux/delay.h>
  30 #include <asm/io.h>
  31
  32 #define RC32434_REG_BASE   0x18000000
  33
  34 #define interrupt ((volatile INT_t ) INT0_VirtualAddress)
  35 #define gpio      ((volatile GPIO_t) GPIO0_VirtualAddress)
  36
  37
  38 #define IDT_CLOCK_MULT 2
  39 #define MIPS_CPU_TIMER_IRQ 7
  40 /* Interrupt Controller */
  41 #define IC_GROUP0_PEND     (RC32434_REG_BASE + 0x38000)
  42 #define IC_GROUP0_MASK     (RC32434_REG_BASE + 0x38008)
  43 #define IC_GROUP_OFFSET    0x0C
  44
  45 #define NUM_INTR_GROUPS    5
  46 /* 16550 UARTs */
  47
  48 #define GROUP0_IRQ_BASE 8               /* GRP2 IRQ numbers start here */
  49 #define GROUP1_IRQ_BASE (GROUP0_IRQ_BASE + 32) /* GRP3 IRQ numbers start here */
  50 #define GROUP2_IRQ_BASE (GROUP1_IRQ_BASE + 32) /* GRP4 IRQ numbers start here */
  51 #define GROUP3_IRQ_BASE (GROUP2_IRQ_BASE + 32)  /* GRP5 IRQ numbers start here */
  52 #define GROUP4_IRQ_BASE (GROUP3_IRQ_BASE + 32)
  53
  54
  55 #ifdef __MIPSEB__
  56 #define RC32434_UART0_BASE (RC32434_REG_BASE + 0x58003)
  57 #else
  58 #define RC32434_UART0_BASE (RC32434_REG_BASE + 0x58000)
  59 #endif
  60
  61 #define RC32434_UART0_IRQ  GROUP3_IRQ_BASE + 0
  62 // #define EB434_UART1_IRQ    GROUP4_IRQ_BASE + 11
  63
  64 #define local_readl(addr) __raw_readl(addr)
  65 #define local_writel(l,addr) __raw_writel(l,addr)
  66
  67 /* cpu pipeline flush */
  68 static inline void rc32434_sync(void)
  69 {
  70         __asm__ volatile ("sync");
  71 }
  72
  73 static inline void rc32434_sync_udelay(int us)
  74 {
  75         __asm__ volatile ("sync");
  76         udelay(us);
  77 }
  78
  79 static inline void rc32434_sync_delay(int ms)
  80 {
  81         __asm__ volatile ("sync");
  82         mdelay(ms);
  83 }
  84
  85 /*
  86  * C access to CLZ and CLO instructions
  87  * (count leading zeroes/ones).
  88  */
  89 static inline int rc32434_clz(unsigned long val)
  90 {
  91         int ret;
  92         __asm__ volatile (
  93                 ".set\tnoreorder\n\t"
  94                 ".set\tnoat\n\t"
  95                 ".set\tmips32\n\t"
  96                 "clz\t%0,%1\n\t"
  97                 ".set\tmips0\n\t"
  98                 ".set\tat\n\t"
  99                 ".set\treorder"
 100                 : "=r" (ret)
 101                 : "r" (val));
 102
 103         return ret;
 104 }
 105 static inline int rc32434_clo(unsigned long val)
 106 {
 107         int ret;
 108         __asm__ volatile (
 109                 ".set\tnoreorder\n\t"
 110                 ".set\tnoat\n\t"
 111                 ".set\tmips32\n\t"
 112                 "clo\t%0,%1\n\t"
 113                 ".set\tmips0\n\t"
 114                 ".set\tat\n\t"
 115                 ".set\treorder"
 116                 : "=r" (ret)
 117                 : "r" (val));
 118
 119         return ret;
 120 }
 121
 122 #endif /* _RC32434_H_ */