94 lines
3.2 KiB
C
94 lines
3.2 KiB
C
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/*
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* Copyright (C) 2011-2015 Apple Inc. All rights reserved.
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*
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* This document is the property of Apple Inc.
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* It is considered confidential and proprietary.
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*
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* This document may not be reproduced or transmitted in any form,
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* in whole or in part, without the express written permission of
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* Apple Inc.
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*/
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#include <debug.h>
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#include <platform/int.h>
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#include <platform/error_handler.h>
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#include <platform/soc/hwisr.h>
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#include <platform/soc/hwregbase.h>
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#include <platform/soc/miu.h>
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// All errors (the remaining bits are perf counters)
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#define AMCC_IRERRDBG_INTEN_ALLERRORS ( \
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AMCC_IRERRDBG_INTSTS_MCC_TP_PAR_ERR_UMASK \
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| AMCC_IRERRDBG_INTSTS_MCC_DAT_ONE_BIT_ERR_UMASK \
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| AMCC_IRERRDBG_INTSTS_MCC_DAT_MULTI_BITS_ERR_UMASK \
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| AMCC_IRERRDBG_INTSTS_MCC_AF_ERR_UMASK \
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| AMCC_IRERRDBG_INTSTS_MCC_TP_MULTI_PAR_ERR_UMASK \
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| AMCC_IRERRDBG_INTSTS_MCS_LS3_B_ALLOC_PAR_ERR_UMASK \
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| AMCC_IRERRDBG_INTSTS_MCS_LS3_B_RESP_PAR_ERR_UMASK \
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| AMCC_IRERRDBG_INTSTS_MCS_LS3_B_TOKEN_PAR_ERR_UMASK \
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| AMCC_IRERRDBG_INTSTS_MCS_LS3_B_DATA_PULL_PAR_ERR_UMASK \
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)
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#define AMCC_IRERRDBG_INTSTS_ALLERRORS AMCC_IRERRDBG_INTEN_ALLERRORS
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#define AMCC_IRERRDBG_MCC_AF_ERR_LOG2_AGENT_IODAP (0x88)
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#define CP_COM_NORM_MSK_CLR_ALL (~0)
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#define CP_COM_NORM_MSK_ILLEGAL_COH_INTS ( \
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CP_COM_INT_NORM_MASK_SET_CCU0_ILLEGAL_PIO_ACCESS_INT_MSK_SET_UMASK \
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| CP_COM_INT_NORM_MASK_SET_CCU1_ILLEGAL_PIO_ACCESS_INT_MSK_SET_UMASK \
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)
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#if NUM_AMCCS > 1
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#error "amc_int_handler() must be recoded for NUM_AMCCS > 1"
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#endif
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static void amc_int_handler(void *arg __unused)
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{
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uint32_t intsts = rAMCC_IRERRDBG_INTSTS(0);
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if ((intsts & (AMCC_IRERRDBG_INTEN_ALLERRORS & ~AMCC_IRERRDBG_INTSTS_MCC_AF_ERR_UMASK)) == 0) {
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// Whitelist errors caused by the IODAP agent (Astris) since
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// these are most likely caused by user input errors.
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uint32_t agent_id = AMCC_IRERRDBG_MCC_AF_ERR_LOG2_MCC_AF_ERR_AID_LOG_XTRCT(rAMCC_IRERRDBG_MCC_AF_ERR_LOG2(0));
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if (agent_id == AMCC_IRERRDBG_MCC_AF_ERR_LOG2_AGENT_IODAP) {
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dprintf(DEBUG_INFO, "AMC error from IODAP (ignored): 0x%x\n", intsts);
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// Clear the interrupt and continue on.
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rAMCC_IRERRDBG_INTSTS(0) = intsts;
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return;
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}
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}
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panic("Received unexpected AMC error. AMCC_IRERRDBG_INTSTS = 0x%x\n", intsts);
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}
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static void cp_int_handler(void *arg __unused) {
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panic("Received unexpected Coherency Point error. CP_COM_INT_NORM_REQUEST = 0x%x\n", rCP_COM_INT_NORM_REQUEST);
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}
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static void enable_cp_checks()
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{
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install_int_handler(INT_COHERENCE_PNT_ERR, cp_int_handler, NULL);
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rCP_COM_INT_NORM_MASK_CLR = CP_COM_NORM_MSK_CLR_ALL;
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unmask_int(INT_COHERENCE_PNT_ERR);
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}
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static void enable_amc_checks()
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{
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install_int_handler(INT_MEM_CONTROLLER0, amc_int_handler, NULL);
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rAMCC_IRERRDBG_INTEN(0) = AMCC_IRERRDBG_INTEN_ALLERRORS;
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if (rAMCC_IRERRDBG_INTSTS(0) & AMCC_IRERRDBG_INTSTS_ALLERRORS) {
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// AMC Interrupts, unlike the CP ones, don't seem to stick. If an error already exists
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// this early in bootup, we won't get an interrupt upon unmask.
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amc_int_handler(NULL);
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}
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rAMCC_IRERRDBG_INTSTS(0) = AMCC_IRERRDBG_INTSTS_ALLERRORS;
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unmask_int(INT_MEM_CONTROLLER0);
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}
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void platform_enable_error_handler() {
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enable_amc_checks();
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enable_cp_checks();
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}
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