forked from rrcarlosr/Jetpack
1076 lines
33 KiB
C
1076 lines
33 KiB
C
/*
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* Copyright (c) 2017-2018, NVIDIA CORPORATION. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* The driver handles Error's from Control Backbone(CBB) generated due to
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* illegal accesses. When an error is reported from a NOC within CBB,
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* the driver checks ErrVld status of all three Error Logger's of that NOC.
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* It then prints debug information about failed transaction using ErrLog
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* registers of error logger which has ErrVld set. Currently, SLV, DEC,
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* TMO, SEC, UNS are the only codes which are supported by CBB.
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*/
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#include <asm/traps.h>
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#include <linux/clk.h>
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#include <linux/debugfs.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include <linux/platform_device.h>
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#include <linux/device.h>
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#include <linux/io.h>
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#include <linux/of_irq.h>
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#include <linux/of_address.h>
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#include <linux/interrupt.h>
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#include <linux/ioport.h>
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#include <soc/tegra/chip-id.h>
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#include <linux/platform/tegra/tegra19x_cbb.h>
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static LIST_HEAD(cbb_noc_list);
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static DEFINE_RAW_SPINLOCK(cbb_noc_lock);
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static struct tegra_noc_errors noc_errors[] = {
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{.errcode = "SLV",
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.src = "Target",
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.type = "Target error detected by CBB slave"
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},
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{.errcode = "DEC",
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.src = "Initiator NIU",
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.type = "Address decode error"
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},
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{.errcode = "UNS",
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.src = "Target NIU",
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.type = "Unsupported request. Not a valid transaction"
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},
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{.errcode = "DISC", /* Not Supported by CBB */
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.src = "Power Disconnect",
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.type = "Disconnected target or domain"
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},
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{.errcode = "SEC",
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.src = "Initiator NIU or Firewall",
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.type = "Security violation. Firewall error"
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},
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{.errcode = "HIDE", /* Not Supported by CBB */
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.src = "Firewall",
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.type = "Hidden security violation, reported as OK to initiator"
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},
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{.errcode = "TMO",
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.src = "Target NIU",
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.type = "Target time-out error"
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},
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{.errcode = "RSV",
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.src = "None",
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.type = "Reserved"
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}
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};
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static char *tegra_noc_opc_trantype[] = {
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"RD - Read, Incrementing",
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"RDW - Read, Wrap", /* Not Supported by CBB */
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"RDX - Exclusive Read", /* Not Supported by CBB */
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"RDL - Linked Read", /* Not Supported by CBB */
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"WR - Write, Incrementing",
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"WRW - Write, Wrap", /* Not Supported by CBB */
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"WRC - Exclusive Write", /* Not Supported by CBB */
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"PRE - Preamble Sequence for Fixed Accesses"
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};
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static char *tegra_axi2apb_errors[] = {
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"SFIFONE - Status FIFO Not Empty interrupt",
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"SFIFOF - Status FIFO Full interrupt",
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"TIM - Timer(Timeout) interrupt",
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"SLV - SLVERR interrupt",
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"NULL",
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"ERBF - Early response buffer Full interrupt",
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"NULL",
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"RDFIFOF - Read Response FIFO Full interrupt",
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"WRFIFOF - Write Response FIFO Full interrupt",
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"CH0DFIFOF - Ch0 Data FIFO Full interrupt",
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"CH1DFIFOF - Ch1 Data FIFO Full interrupt",
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"CH2DFIFOF - Ch2 Data FIFO Full interrupt",
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"UAT - Unsupported alignment type error",
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"UBS - Unsupported burst size error",
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"UBE - Unsupported Byte Enable error",
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"UBT - Unsupported burst type error",
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"BFS - Block Firewall security error",
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"ARFS - Address Range Firewall security error",
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"CH0RFIFOF - Ch0 Request FIFO Full interrupt",
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"CH1RFIFOF - Ch1 Request FIFO Full interrupt",
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"CH2RFIFOF - Ch2 Request FIFO Full interrupt"
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};
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static void print_cbb_err(struct seq_file *file, const char *fmt, ...)
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{
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va_list args;
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struct va_format vaf;
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va_start(args, fmt);
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if (file) {
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seq_vprintf(file, fmt, args);
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} else {
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vaf.fmt = fmt;
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vaf.va = &args;
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pr_crit("%pV", &vaf);
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}
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va_end(args);
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}
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static void cbbcentralnoc_parse_routeid
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(struct tegra_lookup_noc_aperture *noc_trans_info, u64 routeid)
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{
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noc_trans_info->initflow = get_noc_errlog_subfield(routeid, 23, 20);
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noc_trans_info->targflow = get_noc_errlog_subfield(routeid, 19, 16);
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noc_trans_info->targ_subrange = get_noc_errlog_subfield(routeid, 15, 9);
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noc_trans_info->seqid = get_noc_errlog_subfield(routeid, 8, 0);
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}
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static void bpmpnoc_parse_routeid
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(struct tegra_lookup_noc_aperture *noc_trans_info, u64 routeid)
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{
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noc_trans_info->initflow = get_noc_errlog_subfield(routeid, 20, 18);
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noc_trans_info->targflow = get_noc_errlog_subfield(routeid, 17, 13);
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noc_trans_info->targ_subrange = get_noc_errlog_subfield(routeid, 12, 9);
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noc_trans_info->seqid = get_noc_errlog_subfield(routeid, 8, 0);
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}
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static void aonnoc_parse_routeid
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(struct tegra_lookup_noc_aperture *noc_trans_info, u64 routeid)
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{
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noc_trans_info->initflow = get_noc_errlog_subfield(routeid, 22, 21);
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noc_trans_info->targflow = get_noc_errlog_subfield(routeid, 20, 15);
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noc_trans_info->targ_subrange = get_noc_errlog_subfield(routeid, 14, 9);
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noc_trans_info->seqid = get_noc_errlog_subfield(routeid, 8, 0);
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}
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static void scenoc_parse_routeid
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(struct tegra_lookup_noc_aperture *noc_trans_info, u64 routeid)
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{
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noc_trans_info->initflow = get_noc_errlog_subfield(routeid, 21, 19);
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noc_trans_info->targflow = get_noc_errlog_subfield(routeid, 18, 14);
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noc_trans_info->targ_subrange = get_noc_errlog_subfield(routeid, 13, 9);
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noc_trans_info->seqid = get_noc_errlog_subfield(routeid, 8, 0);
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}
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static void cvnoc_parse_routeid
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(struct tegra_lookup_noc_aperture *noc_trans_info, u64 routeid)
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{
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noc_trans_info->initflow = get_noc_errlog_subfield(routeid, 18, 16);
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noc_trans_info->targflow = get_noc_errlog_subfield(routeid, 15, 12);
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noc_trans_info->targ_subrange = get_noc_errlog_subfield(routeid, 11, 7);
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noc_trans_info->seqid = get_noc_errlog_subfield(routeid, 6, 0);
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}
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static void cbbcentralnoc_parse_userbits
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(struct tegra_noc_userbits *noc_trans_usrbits, u64 usrbits)
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{
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noc_trans_usrbits->axcache = get_noc_errlog_subfield(usrbits, 3, 0);
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noc_trans_usrbits->non_mod = get_noc_errlog_subfield(usrbits, 4, 4);
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noc_trans_usrbits->axprot = get_noc_errlog_subfield(usrbits, 7, 5);
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noc_trans_usrbits->vqc = get_noc_errlog_subfield(usrbits, 9, 8);
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noc_trans_usrbits->grpsec = get_noc_errlog_subfield(usrbits, 16, 10);
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noc_trans_usrbits->falconsec = get_noc_errlog_subfield(usrbits, 18, 17);
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noc_trans_usrbits->mstr_id = get_noc_errlog_subfield(usrbits, 22, 19)-1;
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noc_trans_usrbits->axi_id = get_noc_errlog_subfield(usrbits, 30, 23);
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}
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static void clusternoc_parse_userbits
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(struct tegra_noc_userbits *noc_trans_usrbits, u64 usrbits)
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{
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noc_trans_usrbits->mstr_id = get_noc_errlog_subfield(usrbits, 21, 18)-1;
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noc_trans_usrbits->vqc = get_noc_errlog_subfield(usrbits, 17, 16);
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noc_trans_usrbits->grpsec = get_noc_errlog_subfield(usrbits, 15, 9);
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noc_trans_usrbits->falconsec = get_noc_errlog_subfield(usrbits, 8, 7);
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noc_trans_usrbits->axprot = get_noc_errlog_subfield(usrbits, 6, 4);
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noc_trans_usrbits->axcache = get_noc_errlog_subfield(usrbits, 3, 0);
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}
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static void cbb_errlogger_faulten(void __iomem *addr)
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{
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writel(1, addr+OFF_ERRLOGGER_0_FAULTEN_0);
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writel(1, addr+OFF_ERRLOGGER_1_FAULTEN_0);
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writel(1, addr+OFF_ERRLOGGER_2_FAULTEN_0);
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}
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static void cbb_errlogger_stallen(void __iomem *addr)
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{
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writel(1, addr+OFF_ERRLOGGER_0_STALLEN_0);
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writel(1, addr+OFF_ERRLOGGER_1_STALLEN_0);
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writel(1, addr+OFF_ERRLOGGER_2_STALLEN_0);
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}
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static void cbb_errlogger_errclr(void __iomem *addr)
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{
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writel(1, addr+OFF_ERRLOGGER_0_ERRCLR_0);
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writel(1, addr+OFF_ERRLOGGER_1_ERRCLR_0);
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writel(1, addr+OFF_ERRLOGGER_2_ERRCLR_0);
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}
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static unsigned int cbb_errlogger_errvld(void __iomem *addr)
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{
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unsigned int errvld_status = 0;
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errvld_status = readl(addr+OFF_ERRLOGGER_0_ERRVLD_0);
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errvld_status |= (readl(addr+OFF_ERRLOGGER_1_ERRVLD_0) << 1);
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errvld_status |= (readl(addr+OFF_ERRLOGGER_2_ERRVLD_0) << 2);
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return errvld_status;
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}
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/*
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* Fetch InitlocalAddress from NOC Aperture lookup table
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* using Targflow, Targsubrange
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*/
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static int get_init_localaddress(
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struct tegra_lookup_noc_aperture *noc_trans_info,
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struct tegra_lookup_noc_aperture *lookup_noc_aperture,
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int max_cnt)
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{
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int targ_f = 0, targ_sr = 0;
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unsigned long long init_localaddress = 0;
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int targflow = noc_trans_info->targflow;
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int targ_subrange = noc_trans_info->targ_subrange;
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for (targ_f = 0; targ_f < max_cnt; targ_f++) {
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if (lookup_noc_aperture[targ_f].targflow == targflow) {
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targ_sr = targ_f;
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do {
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if (lookup_noc_aperture[targ_sr].targ_subrange == targ_subrange) {
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init_localaddress = lookup_noc_aperture[targ_sr].init_localaddress;
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return init_localaddress;
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}
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if (targ_sr >= max_cnt)
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return 0;
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targ_sr++;
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} while (lookup_noc_aperture[targ_sr].targflow == lookup_noc_aperture[targ_sr-1].targflow);
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targ_f = targ_sr;
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}
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}
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return init_localaddress;
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}
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static void print_cache(struct seq_file *file, u32 cache)
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{
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if ((cache & 0x3) == 0x0) {
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print_cbb_err(file, "\t Cache\t\t\t: 0x%x -- "
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"Non-cacheable/Non-Bufferable)\n", cache);
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return;
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}
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if ((cache & 0x3) == 0x1) {
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print_cbb_err(file, "\t Cache\t\t\t: 0x%x -- Device\n",
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cache);
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return;
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}
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switch (cache) {
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case 0x2:
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print_cbb_err(file,
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"\t Cache\t\t\t: 0x%x -- Cacheable/Non-Bufferable\n", cache);
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break;
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case 0x3:
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print_cbb_err(file,
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"\t Cache\t\t\t: 0x%x -- Cacheable/Bufferable\n", cache);
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break;
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default:
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print_cbb_err(file, "\t Cache\t\t\t: 0x%x -- Cacheable\n",
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cache);
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}
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}
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static void print_prot(struct seq_file *file, u32 prot)
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{
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char *data_str;
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char *secure_str;
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char *priv_str;
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data_str = (prot & 0x4) ? "Instruction" : "Data";
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secure_str = (prot & 0x2) ? "Non-Secure" : "Secure";
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priv_str = (prot & 0x1) ? "Privileged" : "Unprivileged";
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print_cbb_err(file, "\t Protection\t\t: 0x%x -- %s, %s, %s Access\n",
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prot, priv_str, secure_str, data_str);
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}
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static unsigned int tegra_axi2apb_errstatus(void __iomem *addr)
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{
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unsigned int error_status;
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error_status = readl(addr+DMAAPB_X_RAW_INTERRUPT_STATUS);
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writel(0xFFFFFFFF, addr+DMAAPB_X_RAW_INTERRUPT_STATUS);
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return error_status;
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}
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static void print_errlog5(struct seq_file *file,
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struct tegra_cbb_errlog_record *errlog)
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{
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struct tegra_noc_userbits userbits;
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u32 errlog5 = errlog->errlog5;
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errlog->tegra_noc_parse_userbits(&userbits, errlog5);
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if (!strcmp(errlog->name, "CBB-NOC")) {
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print_cbb_err(file, "\t Non-Modify\t\t: 0x%x\n",
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userbits.non_mod);
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print_cbb_err(file, "\t AXI ID\t\t: 0x%x\n",
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userbits.axi_id);
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}
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print_cbb_err(file, "\t Master ID\t\t: %s\n",
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errlog->tegra_cbb_master_id[userbits.mstr_id]);
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print_cbb_err(file, "\t Security Group(GRPSEC): 0x%x\n",
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userbits.grpsec);
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print_cache(file, userbits.axcache);
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print_prot(file, userbits.axprot);
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print_cbb_err(file, "\t FALCONSEC\t\t: 0x%x\n", userbits.falconsec);
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print_cbb_err(file, "\t Virtual Queuing Channel(VQC): 0x%x\n",
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userbits.vqc);
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}
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/*
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* Fetch Base Address/InitlocalAddress from NOC aperture lookup table
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* using TargFlow & Targ_subRange extracted from RouteId.
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* Perform address reconstruction as below:
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* Address = Base Address + (ErrLog3+ErrLog4)
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*/
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static void print_errlog3_4(struct seq_file *file, u32 errlog3, u32 errlog4,
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struct tegra_lookup_noc_aperture *noc_trans_info,
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struct tegra_lookup_noc_aperture *noc_aperture,
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int max_noc_aperture)
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{
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struct resource *res = NULL;
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u64 addr = 0;
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addr = errlog4;
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addr = (addr << 32) | errlog3;
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/*
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* if errlog4[7]="1", then it's a joker entry.
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* joker entry is a rare phenomenon and address is not reliable.
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* debug should be done using the routeid information alone.
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*/
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if (errlog4 & 0x80)
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print_cbb_err(file, "\t debug using routeid alone as below"
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" address is a joker entry and not-reliable.");
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addr += get_init_localaddress(noc_trans_info, noc_aperture,
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max_noc_aperture);
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res = locate_resource(&iomem_resource, addr);
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if (res == NULL)
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print_cbb_err(file, "\t Address\t\t: 0x%llx"
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" (unknown device)\n", addr);
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else
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print_cbb_err(file, "\t Address\t\t: "
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"0x%llx -- %s + 0x%llx\n", addr, res->name,
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addr - res->start);
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}
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/*
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* Get RouteId from ErrLog1+ErrLog2 registers and fetch values of
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* InitFlow, TargFlow, Targ_subRange and SeqId values from RouteId
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*/
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static void print_errlog1_2(struct seq_file *file,
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struct tegra_cbb_errlog_record *errlog,
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struct tegra_lookup_noc_aperture *noc_trans_info)
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{
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u64 routeid = 0;
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u32 seqid = 0;
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routeid = errlog->errlog2;
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routeid = (routeid<<32)|errlog->errlog1;
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print_cbb_err(file, "\t RouteId\t\t: 0x%lx\n", routeid);
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errlog->tegra_noc_parse_routeid(noc_trans_info, routeid);
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print_cbb_err(file, "\t InitFlow\t\t: %s\n",
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errlog->tegra_noc_routeid_initflow[noc_trans_info->initflow]);
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print_cbb_err(file, "\t Targflow\t\t: %s\n",
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errlog->tegra_noc_routeid_targflow[noc_trans_info->targflow]);
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print_cbb_err(file, "\t TargSubRange\t\t: %d\n",
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noc_trans_info->targ_subrange);
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print_cbb_err(file, "\t SeqId\t\t\t: %d\n", seqid);
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}
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/*
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* Print transcation type, error code and description from ErrLog0 for all
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* errors. For NOC slave errors, all relevant error info is printed using
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* ErrLog0 only. But additional information is printed for errors from
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* APB slaves because for them:
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* - All errors are logged as SLV(slave) errors in errlog0 due to APB having
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* only single bit pslverr to report all errors.
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* - Exact cause is printed by reading DMAAPB_X_RAW_INTERRUPT_STATUS register.
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* - The driver prints information showing AXI2APB bridge and exact error
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* only if there is error in any AXI2APB slave.
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* - There is still no way to disambiguate a DEC error from SLV error type.
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*/
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static void print_errlog0(struct seq_file *file,
|
|
struct tegra_cbb_errlog_record *errlog)
|
|
{
|
|
struct tegra_noc_packet_header hdr;
|
|
|
|
hdr.lock = errlog->errlog0 & 0x1;
|
|
hdr.opc = get_noc_errlog_subfield(errlog->errlog0, 4, 1);
|
|
hdr.errcode = get_noc_errlog_subfield(errlog->errlog0, 10, 8);
|
|
hdr.len1 = get_noc_errlog_subfield(errlog->errlog0, 27, 16);
|
|
hdr.format = (errlog->errlog0>>31);
|
|
|
|
print_cbb_err(file, "\t Transaction Type\t: %s\n",
|
|
tegra_noc_opc_trantype[hdr.opc]);
|
|
print_cbb_err(file, "\t Error Code\t\t: %s\n",
|
|
noc_errors[hdr.errcode].errcode);
|
|
print_cbb_err(file, "\t Error Source\t\t: %s\n",
|
|
noc_errors[hdr.errcode].src);
|
|
print_cbb_err(file, "\t Error Description\t: %s\n",
|
|
noc_errors[hdr.errcode].type);
|
|
|
|
if (!strcmp(noc_errors[hdr.errcode].errcode, "SLV")
|
|
&& (errlog->is_ax2apb_bridge_connected)) {
|
|
int i = 0, j = 0;
|
|
int max_axi2apb_err = ARRAY_SIZE(tegra_axi2apb_errors);
|
|
u32 bus_status = 0;
|
|
|
|
/* For all SLV errors, read DMAAPB_X_RAW_INTERRUPT_STATUS
|
|
* register to get error status for all AXI2APB bridges and
|
|
* print only if a bit set for any bridge due to error in
|
|
* a APB slave. For other NOC slaves, no bit will be set.
|
|
* So, below line won't get printed.
|
|
*/
|
|
|
|
for (i = 0; i < errlog->apb_bridge_cnt; i++) {
|
|
bus_status = tegra_axi2apb_errstatus(
|
|
errlog->axi2abp_bases[i]);
|
|
|
|
if (bus_status) {
|
|
for(j = 0; j < max_axi2apb_err; j++) {
|
|
if ( bus_status & (1<<j) )
|
|
print_cbb_err(file, "\t "
|
|
"AXI2APB_%d bridge error: %s"
|
|
, i, tegra_axi2apb_errors[j]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
print_cbb_err(file, "\t Packet header Lock\t: %d\n", hdr.lock);
|
|
print_cbb_err(file, "\t Packet header Len1\t: %d\n", hdr.len1);
|
|
if (hdr.format)
|
|
print_cbb_err(file, "\t NOC protocol version\t: %s\n",
|
|
"version >= 2.7");
|
|
else
|
|
print_cbb_err(file, "\t NOC protocol version\t: %s\n",
|
|
"version < 2.7");
|
|
}
|
|
|
|
|
|
/*
|
|
* Print debug information about failed transaction using
|
|
* ErrLog registers of error loggger having ErrVld set
|
|
*/
|
|
static void print_errloggerX_info(
|
|
struct seq_file *file,
|
|
struct tegra_cbb_errlog_record *errlog, int errloggerX)
|
|
{
|
|
struct tegra_lookup_noc_aperture noc_trans_info = {0,};
|
|
|
|
print_cbb_err(file, "\tError Logger\t\t: %d\n", errloggerX);
|
|
if (errloggerX == 0) {
|
|
errlog->errlog0 = readl(errlog->vaddr+OFF_ERRLOGGER_0_ERRLOG0_0);
|
|
errlog->errlog1 = readl(errlog->vaddr+OFF_ERRLOGGER_0_ERRLOG1_0);
|
|
errlog->errlog2 = readl(errlog->vaddr+OFF_ERRLOGGER_0_RESERVED_00_0);
|
|
errlog->errlog3 = readl(errlog->vaddr+OFF_ERRLOGGER_0_ERRLOG3_0);
|
|
errlog->errlog4 = readl(errlog->vaddr+OFF_ERRLOGGER_0_ERRLOG4_0);
|
|
errlog->errlog5 = readl(errlog->vaddr+OFF_ERRLOGGER_0_ERRLOG5_0);
|
|
} else if (errloggerX == 1) {
|
|
errlog->errlog0 = readl(errlog->vaddr+OFF_ERRLOGGER_1_ERRLOG0_0);
|
|
errlog->errlog1 = readl(errlog->vaddr+OFF_ERRLOGGER_1_ERRLOG1_0);
|
|
errlog->errlog2 = readl(errlog->vaddr+OFF_ERRLOGGER_1_RESERVED_00_0);
|
|
errlog->errlog3 = readl(errlog->vaddr+OFF_ERRLOGGER_1_ERRLOG3_0);
|
|
errlog->errlog4 = readl(errlog->vaddr+OFF_ERRLOGGER_1_ERRLOG4_0);
|
|
errlog->errlog5 = readl(errlog->vaddr+OFF_ERRLOGGER_1_ERRLOG5_0);
|
|
} else if (errloggerX == 2) {
|
|
errlog->errlog0 = readl(errlog->vaddr+OFF_ERRLOGGER_2_ERRLOG0_0);
|
|
errlog->errlog1 = readl(errlog->vaddr+OFF_ERRLOGGER_2_ERRLOG1_0);
|
|
errlog->errlog2 = readl(errlog->vaddr+OFF_ERRLOGGER_2_RESERVED_00_0);
|
|
errlog->errlog3 = readl(errlog->vaddr+OFF_ERRLOGGER_2_ERRLOG3_0);
|
|
errlog->errlog4 = readl(errlog->vaddr+OFF_ERRLOGGER_2_ERRLOG4_0);
|
|
errlog->errlog5 = readl(errlog->vaddr+OFF_ERRLOGGER_2_ERRLOG5_0);
|
|
}
|
|
|
|
print_cbb_err(file, "\tErrLog0\t\t\t: 0x%x\n", errlog->errlog0);
|
|
print_errlog0(file, errlog);
|
|
|
|
print_cbb_err(file, "\tErrLog1\t\t\t: 0x%x\n", errlog->errlog1);
|
|
print_cbb_err(file, "\tErrLog2\t\t\t: 0x%x\n", errlog->errlog2);
|
|
print_errlog1_2(file, errlog, &noc_trans_info);
|
|
|
|
print_cbb_err(file, "\tErrLog3\t\t\t: 0x%x\n", errlog->errlog3);
|
|
print_cbb_err(file, "\tErrLog4\t\t\t: 0x%x\n", errlog->errlog4);
|
|
print_errlog3_4(file, errlog->errlog3, errlog->errlog4,
|
|
&noc_trans_info, errlog->noc_aperture,
|
|
errlog->max_noc_aperture);
|
|
|
|
print_cbb_err(file, "\tErrLog5\t\t\t: 0x%x\n", errlog->errlog5);
|
|
print_errlog5(file, errlog);
|
|
}
|
|
|
|
|
|
static void print_errlog(struct seq_file *file,
|
|
struct tegra_cbb_errlog_record *errlog,
|
|
int errvld_status)
|
|
{
|
|
pr_crit("**************************************\n");
|
|
pr_crit("* For more Internal Decode Help\n");
|
|
pr_crit("* http://nv/cbberr\n");
|
|
pr_crit("* NVIDIA userID is required to access\n");
|
|
pr_crit("**************************************\n");
|
|
pr_crit("CPU:%d, Error:%s\n", smp_processor_id(), errlog->name);
|
|
|
|
if (errvld_status & 0x1)
|
|
print_errloggerX_info(file, errlog, 0);
|
|
else if (errvld_status & 0x2)
|
|
print_errloggerX_info(file, errlog, 1);
|
|
else if (errvld_status & 0x4)
|
|
print_errloggerX_info(file, errlog, 2);
|
|
|
|
errlog->errclr(errlog->vaddr);
|
|
print_cbb_err(file, "\t**************************************\n");
|
|
}
|
|
|
|
|
|
static int cbb_serr_callback(struct pt_regs *regs, int reason,
|
|
unsigned int esr, void *priv)
|
|
{
|
|
unsigned int errvld_status = 0;
|
|
struct tegra_cbb_errlog_record *errlog = priv;
|
|
int retval = 1;
|
|
|
|
if ((!errlog->is_clk_rst) ||
|
|
(errlog->is_clk_rst && errlog->is_clk_enabled())) {
|
|
errvld_status = errlog->errvld(errlog->vaddr);
|
|
|
|
if (errvld_status) {
|
|
print_errlog(NULL, errlog, errvld_status);
|
|
retval = 0;
|
|
}
|
|
}
|
|
return retval;
|
|
}
|
|
|
|
|
|
static struct tegra_cbb_noc_data tegra194_cbb_central_noc_data = {
|
|
.name = "CBB-NOC",
|
|
.errvld = cbb_errlogger_errvld,
|
|
.faulten = cbb_errlogger_faulten,
|
|
.stallen = cbb_errlogger_stallen,
|
|
.errclr = cbb_errlogger_errclr,
|
|
.tegra_cbb_master_id = t194_master_id,
|
|
.noc_aperture = t194_cbbcentralnoc_aperture_lookup,
|
|
.max_noc_aperture = ARRAY_SIZE(t194_cbbcentralnoc_aperture_lookup),
|
|
.tegra_noc_routeid_initflow = t194_cbbcentralnoc_routeid_initflow,
|
|
.tegra_noc_routeid_targflow = t194_cbbcentralnoc_routeid_targflow,
|
|
.tegra_noc_parse_routeid = cbbcentralnoc_parse_routeid,
|
|
.tegra_noc_parse_userbits = cbbcentralnoc_parse_userbits,
|
|
.is_ax2apb_bridge_connected = 1
|
|
};
|
|
|
|
static struct tegra_cbb_noc_data tegra194_aon_noc_data = {
|
|
.name = "AON-NOC",
|
|
.errvld = cbb_errlogger_errvld,
|
|
.faulten = cbb_errlogger_faulten,
|
|
.stallen = cbb_errlogger_stallen,
|
|
.errclr = cbb_errlogger_errclr,
|
|
.tegra_cbb_master_id = t194_master_id,
|
|
.noc_aperture = t194_aonnoc_aperture_lookup,
|
|
.max_noc_aperture = ARRAY_SIZE(t194_aonnoc_aperture_lookup),
|
|
.tegra_noc_routeid_initflow = t194_aonnoc_routeid_initflow,
|
|
.tegra_noc_routeid_targflow = t194_aonnoc_routeid_targflow,
|
|
.tegra_noc_parse_routeid = aonnoc_parse_routeid,
|
|
.tegra_noc_parse_userbits = clusternoc_parse_userbits,
|
|
.is_ax2apb_bridge_connected = 0
|
|
};
|
|
|
|
static struct tegra_cbb_noc_data tegra194_bpmp_noc_data = {
|
|
.name = "BPMP-NOC",
|
|
.errvld = cbb_errlogger_errvld,
|
|
.faulten = cbb_errlogger_faulten,
|
|
.stallen = cbb_errlogger_stallen,
|
|
.errclr = cbb_errlogger_errclr,
|
|
.tegra_cbb_master_id = t194_master_id,
|
|
.noc_aperture = t194_bpmpnoc_aperture_lookup,
|
|
.max_noc_aperture = ARRAY_SIZE(t194_bpmpnoc_aperture_lookup),
|
|
.tegra_noc_routeid_initflow = t194_bpmpnoc_routeid_initflow,
|
|
.tegra_noc_routeid_targflow = t194_bpmpnoc_routeid_targflow,
|
|
.tegra_noc_parse_routeid = bpmpnoc_parse_routeid,
|
|
.tegra_noc_parse_userbits = clusternoc_parse_userbits,
|
|
.is_ax2apb_bridge_connected = 1
|
|
};
|
|
|
|
static struct tegra_cbb_noc_data tegra194_rce_noc_data = {
|
|
.name = "RCE-NOC",
|
|
.errvld = cbb_errlogger_errvld,
|
|
.faulten = cbb_errlogger_faulten,
|
|
.stallen = cbb_errlogger_stallen,
|
|
.errclr = cbb_errlogger_errclr,
|
|
.tegra_cbb_master_id = t194_master_id,
|
|
.noc_aperture = t194_scenoc_aperture_lookup,
|
|
.max_noc_aperture = ARRAY_SIZE(t194_scenoc_aperture_lookup),
|
|
.tegra_noc_routeid_initflow = t194_scenoc_routeid_initflow,
|
|
.tegra_noc_routeid_targflow = t194_scenoc_routeid_targflow,
|
|
.tegra_noc_parse_routeid = scenoc_parse_routeid,
|
|
.tegra_noc_parse_userbits = clusternoc_parse_userbits,
|
|
.is_ax2apb_bridge_connected = 1
|
|
};
|
|
|
|
static struct tegra_cbb_noc_data tegra194_sce_noc_data = {
|
|
.name = "SCE-NOC",
|
|
.errvld = cbb_errlogger_errvld,
|
|
.faulten = cbb_errlogger_faulten,
|
|
.stallen = cbb_errlogger_stallen,
|
|
.errclr = cbb_errlogger_errclr,
|
|
.tegra_cbb_master_id = t194_master_id,
|
|
.noc_aperture = t194_scenoc_aperture_lookup,
|
|
.max_noc_aperture = ARRAY_SIZE(t194_scenoc_aperture_lookup),
|
|
.tegra_noc_routeid_initflow = t194_scenoc_routeid_initflow,
|
|
.tegra_noc_routeid_targflow = t194_scenoc_routeid_targflow,
|
|
.tegra_noc_parse_routeid = scenoc_parse_routeid,
|
|
.tegra_noc_parse_userbits = clusternoc_parse_userbits,
|
|
.is_ax2apb_bridge_connected = 1
|
|
};
|
|
|
|
|
|
static struct tegra_cbb_noc_data tegra194_cv_noc_data = {
|
|
.name = "CV-NOC",
|
|
.errvld = cbb_errlogger_errvld,
|
|
.faulten = cbb_errlogger_faulten,
|
|
.stallen = cbb_errlogger_stallen,
|
|
.errclr = cbb_errlogger_errclr,
|
|
.tegra_cbb_master_id = t194_master_id,
|
|
.noc_aperture = t194_cvnoc_aperture_lookup,
|
|
.max_noc_aperture = ARRAY_SIZE(t194_cvnoc_aperture_lookup),
|
|
.tegra_noc_routeid_initflow = t194_cvnoc_routeid_initflow,
|
|
.tegra_noc_routeid_targflow = t194_cvnoc_routeid_targflow,
|
|
.tegra_noc_parse_routeid = cvnoc_parse_routeid,
|
|
.tegra_noc_parse_userbits = clusternoc_parse_userbits,
|
|
.is_ax2apb_bridge_connected = 1,
|
|
.is_clk_rst = true,
|
|
.is_cluster_probed = is_nvcvnas_probed,
|
|
.is_clk_enabled = is_nvcvnas_clk_enabled,
|
|
.tegra_noc_en_clk_rpm = nvcvnas_busy,
|
|
.tegra_noc_dis_clk_rpm = nvcvnas_idle,
|
|
.tegra_noc_en_clk_no_rpm = nvcvnas_busy_no_rpm,
|
|
.tegra_noc_dis_clk_no_rpm = nvcvnas_idle_no_rpm
|
|
};
|
|
|
|
|
|
static const struct of_device_id axi2apb_match[] = {
|
|
{ .compatible = "nvidia,tegra194-AXI2APB-bridge", },
|
|
{},
|
|
};
|
|
|
|
static struct of_device_id tegra_cbb_match[] = {
|
|
{.compatible = "nvidia,tegra194-CBB-NOC",
|
|
.data = &tegra194_cbb_central_noc_data},
|
|
{.compatible = "nvidia,tegra194-AON-NOC",
|
|
.data = &tegra194_aon_noc_data},
|
|
{.compatible = "nvidia,tegra194-BPMP-NOC",
|
|
.data = &tegra194_bpmp_noc_data},
|
|
{.compatible = "nvidia,tegra194-RCE-NOC",
|
|
.data = &tegra194_rce_noc_data},
|
|
{.compatible = "nvidia,tegra194-SCE-NOC",
|
|
.data = &tegra194_sce_noc_data},
|
|
{.compatible = "nvidia,tegra194-CV-NOC",
|
|
.data = &tegra194_cv_noc_data},
|
|
{},
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(of, tegra_cbb_match);
|
|
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
static DEFINE_MUTEX(cbb_err_mutex);
|
|
static int created_root;
|
|
|
|
|
|
static int cbb_err_show(struct seq_file *file, void *data)
|
|
{
|
|
struct tegra_cbb_errlog_record *errlog;
|
|
unsigned int errvld_status = 0;
|
|
|
|
mutex_lock(&cbb_err_mutex);
|
|
|
|
list_for_each_entry(errlog, &cbb_noc_list, node) {
|
|
if ((!errlog->is_clk_rst) ||
|
|
(errlog->is_clk_rst && errlog->is_clk_enabled())) {
|
|
|
|
errvld_status = errlog->errvld(errlog->vaddr);
|
|
if (errvld_status) {
|
|
print_errlog(file, errlog,
|
|
errvld_status);
|
|
}
|
|
}
|
|
}
|
|
|
|
mutex_unlock(&cbb_err_mutex);
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int cbb_err_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, cbb_err_show, inode->i_private);
|
|
}
|
|
|
|
|
|
static const struct file_operations cbb_err_fops = {
|
|
.open = cbb_err_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release
|
|
};
|
|
|
|
|
|
static int cbb_noc_dbgfs_init(void)
|
|
{
|
|
struct dentry *d;
|
|
if (!created_root) {
|
|
d = debugfs_create_file("tegra_cbb_err",
|
|
S_IRUGO, NULL, NULL, &cbb_err_fops);
|
|
if (IS_ERR_OR_NULL(d)) {
|
|
pr_err("%s: could not create 'tegra_cbb_err' node\n",
|
|
__func__);
|
|
return PTR_ERR(d);
|
|
}
|
|
created_root = true;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#else
|
|
static int cbb_noc_dbgfs_init(void) { return 0; }
|
|
#endif
|
|
|
|
/*
|
|
* Handler for CBB errors from masters other than CCPLEX
|
|
*/
|
|
static irqreturn_t tegra_cbb_error_isr(int irq, void *dev_id)
|
|
{
|
|
struct tegra_cbb_errlog_record *errlog;
|
|
unsigned int errvld_status = 0;
|
|
unsigned long flags;
|
|
|
|
raw_spin_lock_irqsave(&cbb_noc_lock, flags);
|
|
|
|
list_for_each_entry(errlog, &cbb_noc_list, node) {
|
|
if ((!errlog->is_clk_rst) ||
|
|
(errlog->is_clk_rst && errlog->is_clk_enabled())) {
|
|
errvld_status = errlog->errvld(errlog->vaddr);
|
|
|
|
if (errvld_status
|
|
&& ((irq == errlog->noc_secure_irq)
|
|
|| (irq == errlog->noc_nonsecure_irq))) {
|
|
print_cbb_err(NULL, "CPU:%d, Error:%s@0x%llx,"
|
|
"irq=%d\n", smp_processor_id(), errlog->name,
|
|
errlog->start, irq);
|
|
|
|
print_errlog(NULL, errlog, errvld_status);
|
|
}
|
|
}
|
|
}
|
|
raw_spin_unlock_irqrestore(&cbb_noc_lock, flags);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
/*
|
|
* Register handler for CBB_NONSECURE & CBB_SECURE interrupts due to
|
|
* CBB errors from masters other than CCPLEX
|
|
*/
|
|
static int cbb_register_isr(struct platform_device *pdev,
|
|
struct tegra_cbb_errlog_record *errlog)
|
|
{
|
|
int err = 0;
|
|
|
|
errlog->noc_nonsecure_irq = platform_get_irq(pdev, 0);
|
|
if (errlog->noc_nonsecure_irq <= 0) {
|
|
dev_err(&pdev->dev, "can't get irq (%d)\n",
|
|
errlog->noc_nonsecure_irq);
|
|
err = -ENOENT;
|
|
goto isr_err;
|
|
}
|
|
|
|
errlog->noc_secure_irq = platform_get_irq(pdev, 1);
|
|
if (errlog->noc_secure_irq <= 0) {
|
|
dev_err(&pdev->dev, "can't get irq (%d)\n",
|
|
errlog->noc_secure_irq);
|
|
err = -ENOENT;
|
|
goto isr_err;
|
|
}
|
|
dev_info(&pdev->dev, "noc_secure_irq = %d, noc_nonsecure_irq = %d>\n",
|
|
errlog->noc_secure_irq, errlog->noc_nonsecure_irq);
|
|
|
|
if (request_irq(errlog->noc_nonsecure_irq, tegra_cbb_error_isr, 0,
|
|
"noc_nonsecure_irq", pdev)) {
|
|
dev_err(&pdev->dev, "%s: Unable to register (%d) interrupt\n",
|
|
__func__, errlog->noc_nonsecure_irq);
|
|
goto isr_err;
|
|
}
|
|
if (request_irq(errlog->noc_secure_irq, tegra_cbb_error_isr, 0,
|
|
"noc_secure_irq", pdev)) {
|
|
dev_err(&pdev->dev, "%s: Unable to register (%d) interrupt\n",
|
|
__func__, errlog->noc_secure_irq);
|
|
goto isr_err_free_irq;
|
|
}
|
|
return 0;
|
|
|
|
isr_err_free_irq:
|
|
free_irq(errlog->noc_nonsecure_irq, pdev);
|
|
isr_err:
|
|
return err;
|
|
}
|
|
|
|
static void tegra_cbb_error_enable(struct tegra_cbb_errlog_record *errlog)
|
|
{
|
|
|
|
/* set “StallEn=1” to enable queuing of error packets till
|
|
* first is served & cleared
|
|
*/
|
|
errlog->stallen(errlog->vaddr);
|
|
|
|
/* set “FaultEn=1” to enable error reporting signal “Fault” */
|
|
errlog->faulten(errlog->vaddr);
|
|
}
|
|
|
|
|
|
static int tegra_cbb_probe(struct platform_device *pdev)
|
|
{
|
|
struct resource *res_base;
|
|
struct tegra_cbb_errlog_record *errlog;
|
|
const struct tegra_cbb_noc_data *bdata;
|
|
struct serr_hook *callback;
|
|
unsigned long flags;
|
|
struct device_node *np;
|
|
int i = 0;
|
|
int err = 0;
|
|
|
|
/*
|
|
* CBB don't exist on the simulator
|
|
*/
|
|
if (tegra_cpu_is_asim())
|
|
return 0;
|
|
|
|
bdata = of_device_get_match_data(&pdev->dev);
|
|
if (!bdata) {
|
|
dev_err(&pdev->dev, "No device match found\n");
|
|
return -EINVAL;
|
|
}
|
|
if (bdata->is_clk_rst) {
|
|
if (bdata->is_cluster_probed() && !bdata->is_clk_enabled()) {
|
|
bdata->tegra_noc_en_clk_rpm();
|
|
}
|
|
else {
|
|
dev_info(&pdev->dev, "defer probe as %s not probed yet",
|
|
bdata->name);
|
|
return -EPROBE_DEFER;
|
|
}
|
|
}
|
|
|
|
res_base = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
if (!res_base) {
|
|
dev_err(&pdev->dev, "Could not find base address");
|
|
return -ENOENT;
|
|
}
|
|
|
|
err = cbb_noc_dbgfs_init();
|
|
if (err)
|
|
return err;
|
|
|
|
errlog = devm_kzalloc(&pdev->dev, sizeof(*errlog), GFP_KERNEL);
|
|
if (!errlog)
|
|
return -ENOMEM;
|
|
|
|
errlog->start = res_base->start;
|
|
errlog->vaddr = devm_ioremap_resource(&pdev->dev, res_base);
|
|
if (IS_ERR(errlog->vaddr))
|
|
return -EPERM;
|
|
|
|
if (bdata->is_ax2apb_bridge_connected) {
|
|
np = of_find_matching_node(NULL, axi2apb_match);
|
|
if (!np) {
|
|
dev_info(&pdev->dev, "No match found for axi2apb\n");
|
|
return -ENOENT;
|
|
}
|
|
errlog->apb_bridge_cnt =
|
|
(of_property_count_elems_of_size(np, "reg", sizeof(u32)))/4;
|
|
|
|
errlog->axi2abp_bases = devm_kzalloc(&pdev->dev,
|
|
sizeof(u64)*errlog->apb_bridge_cnt, GFP_KERNEL);
|
|
if (errlog->axi2abp_bases == NULL)
|
|
return -ENOMEM;
|
|
|
|
for (i = 0; i < errlog->apb_bridge_cnt; i++) {
|
|
void __iomem *base = of_iomap(np, i);
|
|
|
|
if (!base) {
|
|
dev_err(&pdev->dev,
|
|
"failed to map axi2apb range\n");
|
|
return -ENOENT;
|
|
}
|
|
errlog->axi2abp_bases[i] = base;
|
|
}
|
|
}
|
|
errlog->name = bdata->name;
|
|
errlog->errvld = bdata->errvld;
|
|
errlog->errclr = bdata->errclr;
|
|
errlog->faulten = bdata->faulten;
|
|
errlog->stallen = bdata->stallen;
|
|
errlog->noc_aperture = bdata->noc_aperture;
|
|
errlog->max_noc_aperture = bdata->max_noc_aperture;
|
|
errlog->tegra_noc_routeid_initflow = bdata->tegra_noc_routeid_initflow;
|
|
errlog->tegra_noc_routeid_targflow = bdata->tegra_noc_routeid_targflow;
|
|
errlog->tegra_noc_parse_routeid = bdata->tegra_noc_parse_routeid;
|
|
errlog->tegra_noc_parse_userbits = bdata->tegra_noc_parse_userbits;
|
|
errlog->tegra_cbb_master_id = bdata->tegra_cbb_master_id;
|
|
errlog->is_ax2apb_bridge_connected = bdata->is_ax2apb_bridge_connected;
|
|
errlog->is_clk_rst = bdata->is_clk_rst;
|
|
errlog->is_cluster_probed = bdata->is_cluster_probed;
|
|
errlog->is_clk_enabled = bdata->is_clk_enabled;
|
|
errlog->tegra_noc_en_clk_rpm = bdata->tegra_noc_en_clk_rpm;
|
|
errlog->tegra_noc_dis_clk_rpm = bdata->tegra_noc_dis_clk_rpm;
|
|
errlog->tegra_noc_en_clk_no_rpm = bdata->tegra_noc_en_clk_no_rpm;
|
|
errlog->tegra_noc_dis_clk_no_rpm = bdata->tegra_noc_dis_clk_no_rpm;
|
|
|
|
platform_set_drvdata(pdev, errlog);
|
|
|
|
callback = devm_kzalloc(&pdev->dev, sizeof(*callback), GFP_KERNEL);
|
|
callback->fn = cbb_serr_callback;
|
|
callback->priv = errlog;
|
|
errlog->callback = callback;
|
|
|
|
raw_spin_lock_irqsave(&cbb_noc_lock, flags);
|
|
list_add(&errlog->node, &cbb_noc_list);
|
|
raw_spin_unlock_irqrestore(&cbb_noc_lock, flags);
|
|
|
|
/* register handler for CBB errors due to CCPLEX master*/
|
|
register_serr_hook(callback);
|
|
|
|
/* register handler for CBB errors due to masters other than CCPLEX*/
|
|
err = cbb_register_isr(pdev, errlog);
|
|
if (err < 0) {
|
|
dev_err(&pdev->dev, "Failed to register CBB Interrupt ISR");
|
|
return err;
|
|
}
|
|
|
|
tegra_cbb_error_enable(errlog);
|
|
|
|
if ((errlog->is_clk_rst) && (errlog->is_cluster_probed())
|
|
&& errlog->is_clk_enabled())
|
|
errlog->tegra_noc_dis_clk_rpm();
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int tegra_cbb_remove(struct platform_device *pdev)
|
|
{
|
|
struct resource *res_base;
|
|
struct tegra_cbb_errlog_record *errlog;
|
|
unsigned long flags;
|
|
|
|
res_base = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
if (!res_base)
|
|
return 0;
|
|
|
|
raw_spin_lock_irqsave(&cbb_noc_lock, flags);
|
|
list_for_each_entry(errlog, &cbb_noc_list, node) {
|
|
if (errlog->start == res_base->start) {
|
|
unregister_serr_hook(errlog->callback);
|
|
list_del(&errlog->node);
|
|
break;
|
|
}
|
|
}
|
|
raw_spin_unlock_irqrestore(&cbb_noc_lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
static int tegra_cbb_suspend_noirq(struct device *dev)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int tegra_cbb_resume_noirq(struct device *dev)
|
|
{
|
|
struct tegra_cbb_errlog_record *errlog = dev_get_drvdata(dev);
|
|
int ret = 0;
|
|
|
|
if (errlog->is_clk_rst) {
|
|
if (errlog->is_cluster_probed() && !errlog->is_clk_enabled())
|
|
errlog->tegra_noc_en_clk_no_rpm();
|
|
else {
|
|
dev_info(dev, "%s not resumed", errlog->name);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
tegra_cbb_error_enable(errlog);
|
|
dsb(sy);
|
|
|
|
if ((errlog->is_clk_rst) && (errlog->is_cluster_probed())
|
|
&& errlog->is_clk_enabled())
|
|
errlog->tegra_noc_dis_clk_no_rpm();
|
|
|
|
dev_info(dev, "%s resumed\n", errlog->name);
|
|
return ret;
|
|
}
|
|
|
|
static const struct dev_pm_ops tegra_cbb_pm = {
|
|
SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(tegra_cbb_suspend_noirq,
|
|
tegra_cbb_resume_noirq)
|
|
};
|
|
#endif
|
|
|
|
static struct platform_driver tegra_cbb_driver = {
|
|
.probe = tegra_cbb_probe,
|
|
.remove = tegra_cbb_remove,
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "tegra-cbb",
|
|
.of_match_table = of_match_ptr(tegra_cbb_match),
|
|
#ifdef CONFIG_PM_SLEEP
|
|
.pm = &tegra_cbb_pm,
|
|
#endif
|
|
},
|
|
};
|
|
|
|
static int __init tegra_cbb_init(void)
|
|
{
|
|
return platform_driver_register(&tegra_cbb_driver);
|
|
}
|
|
|
|
static void __exit tegra_cbb_exit(void)
|
|
{
|
|
platform_driver_unregister(&tegra_cbb_driver);
|
|
}
|
|
|
|
arch_initcall(tegra_cbb_init);
|
|
module_exit(tegra_cbb_exit);
|
|
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_DESCRIPTION("SError handler for NOC errors within Control Backbone");
|