arch/m68knommu/platform/5249/config.c

   1 /***************************************************************************/
   2
   3 /*
   4  *      linux/arch/m68knommu/platform/5249/config.c
   5  *
   6  *      Copyright (C) 2002, Greg Ungerer (gerg@snapgear.com)
   7  */
   8
   9 /***************************************************************************/
  10
  11 #include <linux/kernel.h>
  12 #include <linux/sched.h>
  13 #include <linux/param.h>
  14 #include <linux/init.h>
  15 #include <linux/interrupt.h>
  16 #include <asm/irq.h>
  17 #include <asm/dma.h>
  18 #include <asm/traps.h>
  19 #include <asm/machdep.h>
  20 #include <asm/coldfire.h>
  21 #include <asm/mcftimer.h>
  22 #include <asm/mcfsim.h>
  23 #include <asm/mcfdma.h>
  24
  25 /***************************************************************************/
  26
  27 void coldfire_tick(void);
  28 void coldfire_timer_init(irq_handler_t handler);
  29 unsigned long coldfire_timer_offset(void);
  30 void coldfire_reset(void);
  31
  32 /***************************************************************************/
  33
  34 /*
  35  *      DMA channel base address table.
  36  */
  37 unsigned int   dma_base_addr[MAX_M68K_DMA_CHANNELS] = {
  38         MCF_MBAR + MCFDMA_BASE0,
  39         MCF_MBAR + MCFDMA_BASE1,
  40         MCF_MBAR + MCFDMA_BASE2,
  41         MCF_MBAR + MCFDMA_BASE3,
  42 };
  43
  44 unsigned int dma_device_address[MAX_M68K_DMA_CHANNELS];
  45
  46 /***************************************************************************/
  47
  48 void mcf_autovector(unsigned int vec)
  49 {
  50         volatile unsigned char  *mbar;
  51
  52         if ((vec >= 25) && (vec <= 31)) {
  53                 mbar = (volatile unsigned char *) MCF_MBAR;
  54                 vec = 0x1 << (vec - 24);
  55                 *(mbar + MCFSIM_AVR) |= vec;
  56                 mcf_setimr(mcf_getimr() & ~vec);
  57         }
  58 }
  59
  60 /***************************************************************************/
  61
  62 void mcf_settimericr(unsigned int timer, unsigned int level)
  63 {
  64         volatile unsigned char *icrp;
  65         unsigned int icr, imr;
  66
  67         if (timer <= 2) {
  68                 switch (timer) {
  69                 case 2:  icr = MCFSIM_TIMER2ICR; imr = MCFSIM_IMR_TIMER2; break;
  70                 default: icr = MCFSIM_TIMER1ICR; imr = MCFSIM_IMR_TIMER1; break;
  71                 }
  72
  73                 icrp = (volatile unsigned char *) (MCF_MBAR + icr);
  74                 *icrp = MCFSIM_ICR_AUTOVEC | (level << 2) | MCFSIM_ICR_PRI3;
  75                 mcf_setimr(mcf_getimr() & ~imr);
  76         }
  77 }
  78
  79 /***************************************************************************/
  80
  81 int mcf_timerirqpending(int timer)
  82 {
  83         unsigned int imr = 0;
  84
  85         switch (timer) {
  86         case 1:  imr = MCFSIM_IMR_TIMER1; break;
  87         case 2:  imr = MCFSIM_IMR_TIMER2; break;
  88         default: break;
  89         }
  90         return (mcf_getipr() & imr);
  91 }
  92
  93 /***************************************************************************/
  94
  95 void config_BSP(char *commandp, int size)
  96 {
  97         mcf_setimr(MCFSIM_IMR_MASKALL);
  98         mach_sched_init = coldfire_timer_init;
  99         mach_tick = coldfire_tick;
 100         mach_gettimeoffset = coldfire_timer_offset;
 101         mach_reset = coldfire_reset;
 102 }
 103
 104 /***************************************************************************/