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timer-regs.h

/* timer-regs.h: hardware timer register definitions
 *
 * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 */

#ifndef _ASM_TIMER_REGS_H
#define _ASM_TIMER_REGS_H

#include <asm/sections.h>

extern unsigned long __nongprelbss __clkin_clock_speed_HZ;
extern unsigned long __nongprelbss __ext_bus_clock_speed_HZ;
extern unsigned long __nongprelbss __res_bus_clock_speed_HZ;
extern unsigned long __nongprelbss __sdram_clock_speed_HZ;
extern unsigned long __nongprelbss __core_bus_clock_speed_HZ;
extern unsigned long __nongprelbss __core_clock_speed_HZ;
extern unsigned long __nongprelbss __dsu_clock_speed_HZ;
extern unsigned long __nongprelbss __serial_clock_speed_HZ;

#define __get_CLKC()    ({ *(volatile unsigned long *)(0xfeff9a00); })

static inline void __set_CLKC(unsigned long v)
{
      int tmp;

      asm volatile("    st%I0.p     %2,%M0            \n"
                 "      setlos      %3,%1       \n"
                 "      membar                  \n"
                 "0:                \n"
                 "      subicc      %1,#1,%1,icc0     \n"
                 "      bnc   icc0,#1,0b  \n"
                 : "=m"(*(volatile unsigned long *) 0xfeff9a00), "=r"(tmp)
                 : "r"(v), "i"(256)
                 : "icc0");
}

#define __get_TCTR()    ({ *(volatile unsigned long *)(0xfeff9418); })
#define __get_TPRV()    ({ *(volatile unsigned long *)(0xfeff9420); })
#define __get_TPRCKSL() ({ *(volatile unsigned long *)(0xfeff9428); })
#define __get_TCSR(T)   ({ *(volatile unsigned long *)(0xfeff9400 + 8 * (T)); })
#define __get_TxCKSL(T) ({ *(volatile unsigned long *)(0xfeff9430 + 8 * (T)); })

#define __get_TCSR_DATA(T) ({ __get_TCSR(T) >> 24; })

#define __set_TCTR(V)   do { *(volatile unsigned long *)(0xfeff9418) = (V); mb(); } while(0)
#define __set_TPRV(V)   do { *(volatile unsigned long *)(0xfeff9420) = (V) << 24; mb(); } while(0)
#define __set_TPRCKSL(V) do { *(volatile unsigned long *)(0xfeff9428) = (V); mb(); } while(0)
#define __set_TCSR(T,V) \
do { *(volatile unsigned long *)(0xfeff9400 + 8 * (T)) = (V); mb(); } while(0)

#define __set_TxCKSL(T,V) \
do { *(volatile unsigned long *)(0xfeff9430 + 8 * (T)) = (V); mb(); } while(0)

#define __set_TCSR_DATA(T,V) __set_TCSR(T, (V) << 24)
#define __set_TxCKSL_DATA(T,V) __set_TxCKSL(T, TxCKSL_EIGHT | __TxCKSL_SELECT((V)))

/* clock control register */
#define CLKC_CMODE            0x0f000000
#define CLKC_SLPL       0x000f0000
#define CLKC_P0               0x00000100
#define CLKC_CM               0x00000003

#define CLKC_CMODE_s          24

/* timer control register - non-readback mode */
#define TCTR_MODE_0           0x00000000
#define TCTR_MODE_2           0x04000000
#define TCTR_MODE_4           0x08000000
#define TCTR_MODE_5           0x0a000000
#define TCTR_RL_LATCH         0x00000000
#define TCTR_RL_RW_LOW8       0x10000000
#define TCTR_RL_RW_HIGH8      0x20000000
#define TCTR_RL_RW_LH8        0x30000000
#define TCTR_SC_CTR0          0x00000000
#define TCTR_SC_CTR1          0x40000000
#define TCTR_SC_CTR2          0x80000000

/* timer control register - readback mode */
#define TCTR_CNT0       0x02000000
#define TCTR_CNT1       0x04000000
#define TCTR_CNT2       0x08000000
#define TCTR_NSTATUS          0x10000000
#define TCTR_NCOUNT           0x20000000
#define TCTR_SC_READBACK      0xc0000000

/* timer control status registers - non-readback mode */
#define TCSRx_DATA            0xff000000

/* timer control status registers - readback mode */
#define TCSRx_OUTPUT          0x80000000
#define TCSRx_NULLCOUNT       0x40000000
#define TCSRx_RL        0x30000000
#define TCSRx_MODE            0x07000000

/* timer clock select registers */
#define TxCKSL_SELECT         0x0f000000
#define __TxCKSL_SELECT(X)    ((X) << 24)
#define TxCKSL_EIGHT          0xf0000000

#endif /* _ASM_TIMER_REGS_H */

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