Mercurial > ecos-v3_0-branch

//==========================================================================
//
//      var_misc.c
//
//      HAL miscellaneous functions
//
//==========================================================================
//####COPYRIGHTBEGIN####
//
// -------------------------------------------
// The contents of this file are subject to the Red Hat eCos Public License
// Version 1.1 (the "License"); you may not use this file except in
// compliance with the License.  You may obtain a copy of the License at
// http://www.redhat.com/
//
// Software distributed under the License is distributed on an "AS IS"
// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.  See the
// License for the specific language governing rights and limitations under
// the License.
//
// The Original Code is eCos - Embedded Configurable Operating System,
// released September 30, 1998.
//
// The Initial Developer of the Original Code is Red Hat.
// Portions created by Red Hat are
// Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
// All Rights Reserved.
// -------------------------------------------
//
//####COPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):    jskov
// Contributors: jskov, jlarmour, nickg
// Date:         1999-04-03
// Purpose:      HAL miscellaneous functions
// Description:  This file contains miscellaneous functions provided by the
//               HAL.
//
//####DESCRIPTIONEND####
//
//===========================================================================

#include <pkgconf/hal.h>

#include <cyg/infra/cyg_type.h>
#include <cyg/infra/cyg_trac.h>         // tracing macros
#include <cyg/infra/cyg_ass.h>          // assertion macros
#include <cyg/infra/diag.h>             // diag_printf

#include <cyg/hal/hal_arch.h>           // HAL header
#include <cyg/hal/hal_cache.h>          // HAL cache
#include <cyg/hal/hal_intr.h>           // HAL interrupts/exceptions

//---------------------------------------------------------------------------
// Initial cache enabling

#ifdef CYGHWR_HAL_SH_CACHE_MODE_P0_WRITE_BACK
# define CACHE_MODE_P0 0
#else
# define CACHE_MODE_P0 CYGARC_REG_CCR_WT
#endif

#ifdef CYGHWR_HAL_SH_CACHE_MODE_P1_WRITE_BACK
# define CACHE_MODE_P1 CYGARC_REG_CCR_CB
#else
# define CACHE_MODE_P1 0
#endif

externC void
cyg_var_enable_caches(void)
{
    // Initialize cache.
    HAL_UCACHE_INVALIDATE_ALL();

    // Set cache modes
    HAL_UCACHE_WRITE_MODE_SH(CACHE_MODE_P0|CACHE_MODE_P1);

#ifdef CYGHWR_HAL_SH_CACHE_ENABLE
    // Enable cache.
    HAL_UCACHE_ENABLE();
#endif
}

//---------------------------------------------------------------------------
void
hal_variant_init(void)
{
}

//---------------------------------------------------------------------------
// Interrupt function support

#ifdef CYGSEM_HAL_COMMON_INTERRUPTS_ALLOW_NESTING
externC cyg_uint8 cyg_hal_ILVL_table[];
#define HAL_UPDATE_ILVL_TABLE(_vector_, _level_)                         \
    /* Update the ILVL table, so it is easy for the interrupt entry */   \
    /* code to find out the level of a given interrupt source.      */   \
    cyg_hal_ILVL_table[(_vector_)] = (_level_)
#else
#define HAL_UPDATE_ILVL_TABLE(_vector_, _level_)
#endif

void
hal_interrupt_set_level(int vector, int level)
{
    cyg_uint16 iprX;

    CYG_ASSERT((0 <= (level) && 15 >= (level)), "Illegal level");
    CYG_ASSERT((CYGNUM_HAL_ISR_MIN <= (vector)
                && CYGNUM_HAL_ISR_MAX >= (vector)), "Illegal vector");

    HAL_UPDATE_ILVL_TABLE(vector, level);

    switch( (vector) ) {
    case CYGNUM_HAL_INTERRUPT_NMI:
        /* fall through */
    case CYGNUM_HAL_INTERRUPT_LVL0 ... CYGNUM_HAL_INTERRUPT_LVL14:
        /* Cannot change levels */
        break;

        /* IPRA */
    case CYGNUM_HAL_INTERRUPT_TMU0_TUNI0:
        HAL_READ_UINT16(CYGARC_REG_IPRA, iprX);
        iprX &= ~CYGARC_REG_IPRA_TMU0_MASK;
        iprX |= (level)*CYGARC_REG_IPRA_TMU0_PRI1;
        HAL_WRITE_UINT16(CYGARC_REG_IPRA, iprX);
        break;
    case CYGNUM_HAL_INTERRUPT_TMU1_TUNI1:
        HAL_READ_UINT16(CYGARC_REG_IPRA, iprX);
        iprX &= ~CYGARC_REG_IPRA_TMU1_MASK;
        iprX |= (level)*CYGARC_REG_IPRA_TMU1_PRI1;
        HAL_WRITE_UINT16(CYGARC_REG_IPRA, iprX);
        break;
    case CYGNUM_HAL_INTERRUPT_TMU2_TUNI2:
    case CYGNUM_HAL_INTERRUPT_TMU2_TICPI2:
        HAL_READ_UINT16(CYGARC_REG_IPRA, iprX);
        iprX &= ~CYGARC_REG_IPRA_TMU2_MASK;
        iprX |= (level)*CYGARC_REG_IPRA_TMU2_PRI1;
        HAL_WRITE_UINT16(CYGARC_REG_IPRA, iprX);
        break;
    case CYGNUM_HAL_INTERRUPT_RTC_ATI:
    case CYGNUM_HAL_INTERRUPT_RTC_PRI:
    case CYGNUM_HAL_INTERRUPT_RTC_CUI:
        HAL_READ_UINT16(CYGARC_REG_IPRA, iprX);
        iprX &= ~CYGARC_REG_IPRA_RTC_MASK;
        iprX |= (level)*CYGARC_REG_IPRA_RTC_PRI1;
        HAL_WRITE_UINT16(CYGARC_REG_IPRA, iprX);
        break;

        /* IPRB */
    case CYGNUM_HAL_INTERRUPT_SCI_ERI:
    case CYGNUM_HAL_INTERRUPT_SCI_RXI:
    case CYGNUM_HAL_INTERRUPT_SCI_TXI:
    case CYGNUM_HAL_INTERRUPT_SCI_TEI:
        HAL_READ_UINT16(CYGARC_REG_IPRB, iprX);
        iprX &= ~CYGARC_REG_IPRB_SCI_MASK;
        iprX |= (level)*CYGARC_REG_IPRB_SCI_PRI1;
        HAL_WRITE_UINT16(CYGARC_REG_IPRB, iprX);
        break;
    case CYGNUM_HAL_INTERRUPT_WDT_ITI:
        HAL_READ_UINT16(CYGARC_REG_IPRB, iprX);
        iprX &= ~CYGARC_REG_IPRB_WDT_MASK;
        iprX |= (level)*CYGARC_REG_IPRB_WDT_PRI1;
        HAL_WRITE_UINT16(CYGARC_REG_IPRB, iprX);
        break;
    case CYGNUM_HAL_INTERRUPT_REF_RCMI:
    case CYGNUM_HAL_INTERRUPT_REF_ROVI:
        HAL_READ_UINT16(CYGARC_REG_IPRB, iprX);
        iprX &= ~CYGARC_REG_IPRB_REF_MASK;
        iprX |= (level)*CYGARC_REG_IPRB_REF_PRI1;
        HAL_WRITE_UINT16(CYGARC_REG_IPRB, iprX);
        break;

#if (CYGARC_SH_MOD_INTC >= 2)
#ifndef CYGHWR_HAL_SH_IRQ_USE_IRQLVL
        /* IPRC */
    case CYGNUM_HAL_INTERRUPT_IRQ_IRQ0:
        HAL_READ_UINT16(CYGARC_REG_IPRC, iprX);
        iprX &= ~CYGARC_REG_IPRC_IRQ0_MASK;
        iprX |= (level)*CYGARC_REG_IPRC_IRQ0_PRI1;
        HAL_WRITE_UINT16(CYGARC_REG_IPRC, iprX);
        break;
    case CYGNUM_HAL_INTERRUPT_IRQ_IRQ1:
        HAL_READ_UINT16(CYGARC_REG_IPRC, iprX);
        iprX &= ~CYGARC_REG_IPRC_IRQ1_MASK;
        iprX |= (level)*CYGARC_REG_IPRC_IRQ1_PRI1;
        HAL_WRITE_UINT16(CYGARC_REG_IPRC, iprX);
        break;
    case CYGNUM_HAL_INTERRUPT_IRQ_IRQ2:
        HAL_READ_UINT16(CYGARC_REG_IPRC, iprX);
        iprX &= ~CYGARC_REG_IPRC_IRQ2_MASK;
        iprX |= (level)*CYGARC_REG_IPRC_IRQ2_PRI1;
        HAL_WRITE_UINT16(CYGARC_REG_IPRC, iprX);
        break;
    case CYGNUM_HAL_INTERRUPT_IRQ_IRQ3:
        HAL_READ_UINT16(CYGARC_REG_IPRC, iprX);
        iprX &= ~CYGARC_REG_IPRC_IRQ3_MASK;
        iprX |= (level)*CYGARC_REG_IPRC_IRQ3_PRI1;
        HAL_WRITE_UINT16(CYGARC_REG_IPRC, iprX);
        break;
#endif
        /* IPRD */
    case CYGNUM_HAL_INTERRUPT_PINT_PINT07:
        HAL_READ_UINT16(CYGARC_REG_IPRD, iprX);
        iprX &= ~CYGARC_REG_IPRD_PINT07_MASK;
        iprX |= (level)*CYGARC_REG_IPRD_PINT07_PRI1;
        HAL_WRITE_UINT16(CYGARC_REG_IPRD, iprX);
        break;
    case CYGNUM_HAL_INTERRUPT_PINT_PINT8F:
        HAL_READ_UINT16(CYGARC_REG_IPRD, iprX);
        iprX &= ~CYGARC_REG_IPRD_PINT8F_MASK;
        iprX |= (level)*CYGARC_REG_IPRD_PINT8F_PRI1;
        HAL_WRITE_UINT16(CYGARC_REG_IPRD, iprX);
        break;
    case CYGNUM_HAL_INTERRUPT_IRQ_IRQ5:
        HAL_READ_UINT16(CYGARC_REG_IPRD, iprX);
        iprX &= ~CYGARC_REG_IPRD_IRQ5_MASK;
        iprX |= (level)*CYGARC_REG_IPRD_IRQ5_PRI1;
        HAL_WRITE_UINT16(CYGARC_REG_IPRD, iprX);
        break;
    case CYGNUM_HAL_INTERRUPT_IRQ_IRQ4:
        HAL_READ_UINT16(CYGARC_REG_IPRD, iprX);
        iprX &= ~CYGARC_REG_IPRD_IRQ4_MASK;
        iprX |= (level)*CYGARC_REG_IPRD_IRQ4_PRI1;
        HAL_WRITE_UINT16(CYGARC_REG_IPRD, iprX);
        break;

        /* IPRE */
    case CYGNUM_HAL_INTERRUPT_DMAC_DEI0:
    case CYGNUM_HAL_INTERRUPT_DMAC_DEI1:
    case CYGNUM_HAL_INTERRUPT_DMAC_DEI2:
    case CYGNUM_HAL_INTERRUPT_DMAC_DEI3:
        HAL_READ_UINT16(CYGARC_REG_IPRE, iprX);
        iprX &= ~CYGARC_REG_IPRE_DMAC_MASK;
        iprX |= (level)*CYGARC_REG_IPRE_DMAC_PRI1;
        HAL_WRITE_UINT16(CYGARC_REG_IPRE, iprX);
        break;
    case CYGNUM_HAL_INTERRUPT_IRDA_ERI1:
    case CYGNUM_HAL_INTERRUPT_IRDA_RXI1:
    case CYGNUM_HAL_INTERRUPT_IRDA_BRI1:
    case CYGNUM_HAL_INTERRUPT_IRDA_TXI1:
        HAL_READ_UINT16(CYGARC_REG_IPRE, iprX);
        iprX &= ~CYGARC_REG_IPRE_IRDA_MASK;
        iprX |= (level)*CYGARC_REG_IPRE_IRDA_PRI1;
        HAL_WRITE_UINT16(CYGARC_REG_IPRE, iprX);
        break;
    case CYGNUM_HAL_INTERRUPT_SCIF_ERI2:
    case CYGNUM_HAL_INTERRUPT_SCIF_RXI2:
    case CYGNUM_HAL_INTERRUPT_SCIF_BRI2:
    case CYGNUM_HAL_INTERRUPT_SCIF_TXI2:
        HAL_READ_UINT16(CYGARC_REG_IPRE, iprX);
        iprX &= ~CYGARC_REG_IPRE_SCIF_MASK;
        iprX |= (level)*CYGARC_REG_IPRE_SCIF_PRI1;
        HAL_WRITE_UINT16(CYGARC_REG_IPRE, iprX);
        break;
    case CYGNUM_HAL_INTERRUPT_ADC_ADI:
        HAL_READ_UINT16(CYGARC_REG_IPRE, iprX);
        iprX &= ~CYGARC_REG_IPRE_ADC_MASK;
        iprX |= (level)*CYGARC_REG_IPRE_ADC_PRI1;
        HAL_WRITE_UINT16(CYGARC_REG_IPRE, iprX);
        break;
#endif // (CYGARC_SH_MOD_INTC >= 2)

#if (CYGARC_SH_MOD_INTC >= 3)
        /* IPRF */
    case CYGNUM_HAL_INTERRUPT_LCDC_LCDI:
        HAL_READ_UINT16(CYGARC_REG_IPRF, iprX);
        iprX &= ~CYGARC_REG_IPRF_LCDI_MASK;
        iprX |= (level)*CYGARC_REG_IPRF_LCDI_PRI1;
        HAL_WRITE_UINT16(CYGARC_REG_IPRF, iprX);
        break;
    case CYGNUM_HAL_INTERRUPT_PCC_PCC0:
        HAL_READ_UINT16(CYGARC_REG_IPRF, iprX);
        iprX &= ~CYGARC_REG_IPRF_PCC0_MASK;
        iprX |= (level)*CYGARC_REG_IPRF_PCC0_PRI1;
        HAL_WRITE_UINT16(CYGARC_REG_IPRF, iprX);
        break;
    case CYGNUM_HAL_INTERRUPT_PCC_PCC1:
        HAL_READ_UINT16(CYGARC_REG_IPRF, iprX);
        iprX &= ~CYGARC_REG_IPRF_PCC1_MASK;
        iprX |= (level)*CYGARC_REG_IPRF_PCC1_PRI1;
        HAL_WRITE_UINT16(CYGARC_REG_IPRF, iprX);
        break;
#endif // (CYGARC_SH_MOD_INTC >= 3)

    case CYGNUM_HAL_INTERRUPT_RESERVED_1E0:
    case CYGNUM_HAL_INTERRUPT_RESERVED_3E0:
        /* Do nothing for these reserved vectors. */
        break;

    default:
        CYG_FAIL("Unknown interrupt vector");
        break;
    }
}

void
hal_interrupt_mask(int vector)
{
    switch( (vector) ) {
    case CYGNUM_HAL_INTERRUPT_NMI:
        /* fall through */
    case CYGNUM_HAL_INTERRUPT_LVL0 ... CYGNUM_HAL_INTERRUPT_LVL14:
        /* Can only be masked by fiddling Imask in SR. */
        break;
    case CYGNUM_HAL_INTERRUPT_TMU0_TUNI0 ... CYGNUM_HAL_ISR_MAX:
        HAL_INTERRUPT_SET_LEVEL((vector), 0);
        break;
    case CYGNUM_HAL_INTERRUPT_RESERVED_1E0:
    case CYGNUM_HAL_INTERRUPT_RESERVED_3E0:
        /* Do nothing for these reserved vectors. */
        break;
    default:
        CYG_FAIL("Unknown interrupt vector");
        break;
    }
}

void
hal_interrupt_unmask(int vector)
{
    switch( (vector) ) {
    case CYGNUM_HAL_INTERRUPT_NMI:
        /* fall through */
    case CYGNUM_HAL_INTERRUPT_LVL0 ... CYGNUM_HAL_INTERRUPT_LVL14:
        /* Can only be unmasked by fiddling Imask in SR. */
        break;
    case CYGNUM_HAL_INTERRUPT_TMU0_TUNI0 ... CYGNUM_HAL_ISR_MAX:
        HAL_INTERRUPT_SET_LEVEL((vector), 1);
        break;
    case CYGNUM_HAL_INTERRUPT_RESERVED_1E0:
    case CYGNUM_HAL_INTERRUPT_RESERVED_3E0:
        /* Do nothing for these reserved vectors. */
        break;
    default:
        CYG_FAIL("Unknown interrupt vector");
        break;
    }
}

void
hal_interrupt_acknowledge(int vector)
{
#if (CYGARC_SH_MOD_INTC >= 2)
    if ( (vector) >= CYGNUM_HAL_INTERRUPT_IRQ_IRQ0
         && (vector) <= CYGNUM_HAL_INTERRUPT_IRQ_IRQ5) {

        cyg_uint8 irr0;

        HAL_READ_UINT8(CYGARC_REG_IRR0, irr0);
        switch ( vector ) {
#ifndef CYGHWR_HAL_SH_IRQ_USE_IRQLVL
        case CYGNUM_HAL_INTERRUPT_IRQ_IRQ0:
            irr0 &= ~CYGARC_REG_IRR0_IRQ0;
            break;
        case CYGNUM_HAL_INTERRUPT_IRQ_IRQ1:
            irr0 &= ~CYGARC_REG_IRR0_IRQ1;
            break;
        case CYGNUM_HAL_INTERRUPT_IRQ_IRQ2:
            irr0 &= ~CYGARC_REG_IRR0_IRQ2;
            break;
        case CYGNUM_HAL_INTERRUPT_IRQ_IRQ3:
            irr0 &= ~CYGARC_REG_IRR0_IRQ3;
            break;
#endif
        case CYGNUM_HAL_INTERRUPT_IRQ_IRQ4:
            irr0 &= ~CYGARC_REG_IRR0_IRQ4;
            break;
        case CYGNUM_HAL_INTERRUPT_IRQ_IRQ5:
            irr0 &= ~CYGARC_REG_IRR0_IRQ5;
            break;
        default:
            CYG_FAIL("Unhandled interrupt vector");
        }
        HAL_WRITE_UINT8(CYGARC_REG_IRR0, irr0);
    }
#endif
}

// Note: The PINTs can be masked and configured individually, even
// though there are only two vectors. Maybe add some fake vectors just
// for masking/configuring?
void
hal_interrupt_configure(int vector, int level, int up)
{
#if (CYGARC_SH_MOD_INTC >= 2)
    if ( (vector) >= CYGNUM_HAL_INTERRUPT_IRQ_IRQ0
         && (vector) <= CYGNUM_HAL_INTERRUPT_IRQ_IRQ5) {

        cyg_uint16 icr1, ss, mask;
        ss = 0;
        mask = CYGARC_REG_ICR1_SENSE_UP|CYGARC_REG_ICR1_SENSE_LEVEL;
        if (up) ss |= CYGARC_REG_ICR1_SENSE_UP;
        if (level) ss |= CYGARC_REG_ICR1_SENSE_LEVEL;
        CYG_ASSERT(!(up && level), "Cannot trigger on high level!");

        switch( (vector) ) {
        case CYGNUM_HAL_INTERRUPT_IRQ_IRQ5:
            ss <<= CYGARC_REG_ICR1_SENSE_IRQ5_shift;
            mask <<= CYGARC_REG_ICR1_SENSE_IRQ5_shift;
            break;
        case CYGNUM_HAL_INTERRUPT_IRQ_IRQ4:
            ss <<= CYGARC_REG_ICR1_SENSE_IRQ4_shift;
            mask <<= CYGARC_REG_ICR1_SENSE_IRQ4_shift;
            break;
#ifndef CYGHWR_HAL_SH_IRQ_USE_IRQLVL
        case CYGNUM_HAL_INTERRUPT_IRQ_IRQ3:
            ss <<= CYGARC_REG_ICR1_SENSE_IRQ3_shift;
            mask <<= CYGARC_REG_ICR1_SENSE_IRQ3_shift;
            break;
        case CYGNUM_HAL_INTERRUPT_IRQ_IRQ2:
            ss <<= CYGARC_REG_ICR1_SENSE_IRQ2_shift;
            mask <<= CYGARC_REG_ICR1_SENSE_IRQ2_shift;
            break;
        case CYGNUM_HAL_INTERRUPT_IRQ_IRQ1:
            ss <<= CYGARC_REG_ICR1_SENSE_IRQ1_shift;
            mask <<= CYGARC_REG_ICR1_SENSE_IRQ1_shift;
            break;
        case CYGNUM_HAL_INTERRUPT_IRQ_IRQ0:
            ss <<= CYGARC_REG_ICR1_SENSE_IRQ0_shift;
            mask <<= CYGARC_REG_ICR1_SENSE_IRQ0_shift;
            break;
#endif
        default:
            CYG_FAIL("Unhandled interrupt vector");
        }

        HAL_READ_UINT16(CYGARC_REG_ICR1, icr1);
        icr1 &= ~mask;
        icr1 |= ss;
        HAL_WRITE_UINT16(CYGARC_REG_ICR1, icr1);
    }
#endif
}

//---------------------------------------------------------------------------
// End of hal_misc.c
author	jlarmour
date	Fri, 17 Nov 2000 23:16:43 +0000
parents	d2f49caf9e38
children	52c99470ec11