linux/include/asm-frv/timer-regs.h
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   1/* timer-regs.h: hardware timer register definitions
   2 *
   3 * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
   4 * Written by David Howells (dhowells@redhat.com)
   5 *
   6 * This program is free software; you can redistribute it and/or
   7 * modify it under the terms of the GNU General Public License
   8 * as published by the Free Software Foundation; either version
   9 * 2 of the License, or (at your option) any later version.
  10 */
  11
  12#ifndef _ASM_TIMER_REGS_H
  13#define _ASM_TIMER_REGS_H
  14
  15#include <asm/sections.h>
  16
  17extern unsigned long __nongprelbss __clkin_clock_speed_HZ;
  18extern unsigned long __nongprelbss __ext_bus_clock_speed_HZ;
  19extern unsigned long __nongprelbss __res_bus_clock_speed_HZ;
  20extern unsigned long __nongprelbss __sdram_clock_speed_HZ;
  21extern unsigned long __nongprelbss __core_bus_clock_speed_HZ;
  22extern unsigned long __nongprelbss __core_clock_speed_HZ;
  23extern unsigned long __nongprelbss __dsu_clock_speed_HZ;
  24extern unsigned long __nongprelbss __serial_clock_speed_HZ;
  25
  26#define __get_CLKC()    ({ *(volatile unsigned long *)(0xfeff9a00); })
  27
  28static inline void __set_CLKC(unsigned long v)
  29{
  30        int tmp;
  31
  32        asm volatile("  st%I0.p %2,%M0          \n"
  33                     "  setlos  %3,%1           \n"
  34                     "  membar                  \n"
  35                     "0:                        \n"
  36                     "  subicc  %1,#1,%1,icc0   \n"
  37                     "  bnc     icc0,#1,0b      \n"
  38                     : "=m"(*(volatile unsigned long *) 0xfeff9a00), "=r"(tmp)
  39                     : "r"(v), "i"(256)
  40                     : "icc0");
  41}
  42
  43#define __get_TCTR()    ({ *(volatile unsigned long *)(0xfeff9418); })
  44#define __get_TPRV()    ({ *(volatile unsigned long *)(0xfeff9420); })
  45#define __get_TPRCKSL() ({ *(volatile unsigned long *)(0xfeff9428); })
  46#define __get_TCSR(T)   ({ *(volatile unsigned long *)(0xfeff9400 + 8 * (T)); })
  47#define __get_TxCKSL(T) ({ *(volatile unsigned long *)(0xfeff9430 + 8 * (T)); })
  48
  49#define __get_TCSR_DATA(T) ({ __get_TCSR(T) >> 24; })
  50
  51#define __set_TCTR(V)   do { *(volatile unsigned long *)(0xfeff9418) = (V); mb(); } while(0)
  52#define __set_TPRV(V)   do { *(volatile unsigned long *)(0xfeff9420) = (V) << 24; mb(); } while(0)
  53#define __set_TPRCKSL(V) do { *(volatile unsigned long *)(0xfeff9428) = (V); mb(); } while(0)
  54#define __set_TCSR(T,V) \
  55do { *(volatile unsigned long *)(0xfeff9400 + 8 * (T)) = (V); mb(); } while(0)
  56
  57#define __set_TxCKSL(T,V) \
  58do { *(volatile unsigned long *)(0xfeff9430 + 8 * (T)) = (V); mb(); } while(0)
  59
  60#define __set_TCSR_DATA(T,V) __set_TCSR(T, (V) << 24)
  61#define __set_TxCKSL_DATA(T,V) __set_TxCKSL(T, TxCKSL_EIGHT | __TxCKSL_SELECT((V)))
  62
  63/* clock control register */
  64#define CLKC_CMODE              0x0f000000
  65#define CLKC_SLPL               0x000f0000
  66#define CLKC_P0                 0x00000100
  67#define CLKC_CM                 0x00000003
  68
  69#define CLKC_CMODE_s            24
  70
  71/* timer control register - non-readback mode */
  72#define TCTR_MODE_0             0x00000000
  73#define TCTR_MODE_2             0x04000000
  74#define TCTR_MODE_4             0x08000000
  75#define TCTR_MODE_5             0x0a000000
  76#define TCTR_RL_LATCH           0x00000000
  77#define TCTR_RL_RW_LOW8         0x10000000
  78#define TCTR_RL_RW_HIGH8        0x20000000
  79#define TCTR_RL_RW_LH8          0x30000000
  80#define TCTR_SC_CTR0            0x00000000
  81#define TCTR_SC_CTR1            0x40000000
  82#define TCTR_SC_CTR2            0x80000000
  83
  84/* timer control register - readback mode */
  85#define TCTR_CNT0               0x02000000
  86#define TCTR_CNT1               0x04000000
  87#define TCTR_CNT2               0x08000000
  88#define TCTR_NSTATUS            0x10000000
  89#define TCTR_NCOUNT             0x20000000
  90#define TCTR_SC_READBACK        0xc0000000
  91
  92/* timer control status registers - non-readback mode */
  93#define TCSRx_DATA              0xff000000
  94
  95/* timer control status registers - readback mode */
  96#define TCSRx_OUTPUT            0x80000000
  97#define TCSRx_NULLCOUNT         0x40000000
  98#define TCSRx_RL                0x30000000
  99#define TCSRx_MODE              0x07000000
 100
 101/* timer clock select registers */
 102#define TxCKSL_SELECT           0x0f000000
 103#define __TxCKSL_SELECT(X)      ((X) << 24)
 104#define TxCKSL_EIGHT            0xf0000000
 105
 106#endif /* _ASM_TIMER_REGS_H */
 107
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