1b930fb786
- Replace MIPS24K-specific code with more generic framework that will
make adding new CPU support easier
- Add MIPS24K support for new framework
- Limit backtrace depth to 1 for stability reasons and add option
HWPMC_MIPS_BACKTRACE to override this limitation
230 lines
8.3 KiB
C
230 lines
8.3 KiB
C
/*-
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* Copyright (c) 2010 George V. Neville-Neil <gnn@freebsd.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/pmc.h>
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#include <sys/pmckern.h>
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#include <machine/cpu.h>
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#include <machine/cpufunc.h>
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#include <machine/pmc_mdep.h>
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#define MIPS24K_PMC_CAPS (PMC_CAP_INTERRUPT | PMC_CAP_USER | \
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PMC_CAP_SYSTEM | PMC_CAP_EDGE | \
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PMC_CAP_THRESHOLD | PMC_CAP_READ | \
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PMC_CAP_WRITE | PMC_CAP_INVERT | \
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PMC_CAP_QUALIFIER)
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#define MIPS24K_PMC_INTERRUPT_ENABLE 0x10 /* Enable interrupts */
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#define MIPS24K_PMC_USER_ENABLE 0x08 /* Count in USER mode */
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#define MIPS24K_PMC_SUPER_ENABLE 0x04 /* Count in SUPERVISOR mode */
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#define MIPS24K_PMC_KERNEL_ENABLE 0x02 /* Count in KERNEL mode */
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#define MIPS24K_PMC_ENABLE (MIPS24K_PMC_USER_ENABLE | \
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MIPS24K_PMC_SUPER_ENABLE | \
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MIPS24K_PMC_KERNEL_ENABLE)
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#define MIPS24K_PMC_SELECT 5 /* Which bit position the event starts at. */
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const struct mips_event_code_map mips_event_codes[] = {
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{ PMC_EV_MIPS24K_CYCLE, MIPS_CTR_ALL, 0},
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{ PMC_EV_MIPS24K_INSTR_EXECUTED, MIPS_CTR_ALL, 1},
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{ PMC_EV_MIPS24K_BRANCH_COMPLETED, MIPS_CTR_0, 2},
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{ PMC_EV_MIPS24K_BRANCH_MISPRED, MIPS_CTR_1, 2},
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{ PMC_EV_MIPS24K_RETURN, MIPS_CTR_0, 3},
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{ PMC_EV_MIPS24K_RETURN_MISPRED, MIPS_CTR_1, 3},
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{ PMC_EV_MIPS24K_RETURN_NOT_31, MIPS_CTR_0, 4},
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{ PMC_EV_MIPS24K_RETURN_NOTPRED, MIPS_CTR_1, 4},
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{ PMC_EV_MIPS24K_ITLB_ACCESS, MIPS_CTR_0, 5},
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{ PMC_EV_MIPS24K_ITLB_MISS, MIPS_CTR_1, 5},
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{ PMC_EV_MIPS24K_DTLB_ACCESS, MIPS_CTR_0, 6},
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{ PMC_EV_MIPS24K_DTLB_MISS, MIPS_CTR_1, 6},
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{ PMC_EV_MIPS24K_JTLB_IACCESS, MIPS_CTR_0, 7},
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{ PMC_EV_MIPS24K_JTLB_IMISS, MIPS_CTR_1, 7},
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{ PMC_EV_MIPS24K_JTLB_DACCESS, MIPS_CTR_0, 8},
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{ PMC_EV_MIPS24K_JTLB_DMISS, MIPS_CTR_1, 8},
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{ PMC_EV_MIPS24K_IC_FETCH, MIPS_CTR_0, 9},
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{ PMC_EV_MIPS24K_IC_MISS, MIPS_CTR_1, 9},
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{ PMC_EV_MIPS24K_DC_LOADSTORE, MIPS_CTR_0, 10},
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{ PMC_EV_MIPS24K_DC_WRITEBACK, MIPS_CTR_1, 10},
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{ PMC_EV_MIPS24K_DC_MISS, MIPS_CTR_ALL, 11},
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/* 12 reserved */
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{ PMC_EV_MIPS24K_STORE_MISS, MIPS_CTR_0, 13},
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{ PMC_EV_MIPS24K_LOAD_MISS, MIPS_CTR_1, 13},
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{ PMC_EV_MIPS24K_INTEGER_COMPLETED, MIPS_CTR_0, 14},
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{ PMC_EV_MIPS24K_FP_COMPLETED, MIPS_CTR_1, 14},
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{ PMC_EV_MIPS24K_LOAD_COMPLETED, MIPS_CTR_0, 15},
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{ PMC_EV_MIPS24K_STORE_COMPLETED, MIPS_CTR_1, 15},
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{ PMC_EV_MIPS24K_BARRIER_COMPLETED, MIPS_CTR_0, 16},
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{ PMC_EV_MIPS24K_MIPS16_COMPLETED, MIPS_CTR_1, 16},
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{ PMC_EV_MIPS24K_NOP_COMPLETED, MIPS_CTR_0, 17},
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{ PMC_EV_MIPS24K_INTEGER_MULDIV_COMPLETED, MIPS_CTR_1, 17},
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{ PMC_EV_MIPS24K_RF_STALL, MIPS_CTR_0, 18},
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{ PMC_EV_MIPS24K_INSTR_REFETCH, MIPS_CTR_1, 18},
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{ PMC_EV_MIPS24K_STORE_COND_COMPLETED, MIPS_CTR_0, 19},
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{ PMC_EV_MIPS24K_STORE_COND_FAILED, MIPS_CTR_1, 19},
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{ PMC_EV_MIPS24K_ICACHE_REQUESTS, MIPS_CTR_0, 20},
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{ PMC_EV_MIPS24K_ICACHE_HIT, MIPS_CTR_1, 20},
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{ PMC_EV_MIPS24K_L2_WRITEBACK, MIPS_CTR_0, 21},
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{ PMC_EV_MIPS24K_L2_ACCESS, MIPS_CTR_1, 21},
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{ PMC_EV_MIPS24K_L2_MISS, MIPS_CTR_0, 22},
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{ PMC_EV_MIPS24K_L2_ERR_CORRECTED, MIPS_CTR_1, 22},
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{ PMC_EV_MIPS24K_EXCEPTIONS, MIPS_CTR_0, 23},
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/* Event 23 on COP0 1/3 is undefined */
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{ PMC_EV_MIPS24K_RF_CYCLES_STALLED, MIPS_CTR_0, 24},
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{ PMC_EV_MIPS24K_IFU_CYCLES_STALLED, MIPS_CTR_0, 25},
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{ PMC_EV_MIPS24K_ALU_CYCLES_STALLED, MIPS_CTR_1, 25},
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/* Events 26 through 32 undefined or reserved to customers */
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{ PMC_EV_MIPS24K_UNCACHED_LOAD, MIPS_CTR_0, 33},
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{ PMC_EV_MIPS24K_UNCACHED_STORE, MIPS_CTR_1, 33},
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{ PMC_EV_MIPS24K_CP2_REG_TO_REG_COMPLETED, MIPS_CTR_0, 35},
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{ PMC_EV_MIPS24K_MFTC_COMPLETED, MIPS_CTR_1, 35},
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/* Event 36 reserved */
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{ PMC_EV_MIPS24K_IC_BLOCKED_CYCLES, MIPS_CTR_0, 37},
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{ PMC_EV_MIPS24K_DC_BLOCKED_CYCLES, MIPS_CTR_1, 37},
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{ PMC_EV_MIPS24K_L2_IMISS_STALL_CYCLES, MIPS_CTR_0, 38},
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{ PMC_EV_MIPS24K_L2_DMISS_STALL_CYCLES, MIPS_CTR_1, 38},
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{ PMC_EV_MIPS24K_DMISS_CYCLES, MIPS_CTR_0, 39},
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{ PMC_EV_MIPS24K_L2_MISS_CYCLES, MIPS_CTR_1, 39},
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{ PMC_EV_MIPS24K_UNCACHED_BLOCK_CYCLES, MIPS_CTR_0, 40},
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{ PMC_EV_MIPS24K_MDU_STALL_CYCLES, MIPS_CTR_0, 41},
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{ PMC_EV_MIPS24K_FPU_STALL_CYCLES, MIPS_CTR_1, 41},
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{ PMC_EV_MIPS24K_CP2_STALL_CYCLES, MIPS_CTR_0, 42},
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{ PMC_EV_MIPS24K_COREXTEND_STALL_CYCLES, MIPS_CTR_1, 42},
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{ PMC_EV_MIPS24K_ISPRAM_STALL_CYCLES, MIPS_CTR_0, 43},
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{ PMC_EV_MIPS24K_DSPRAM_STALL_CYCLES, MIPS_CTR_1, 43},
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{ PMC_EV_MIPS24K_CACHE_STALL_CYCLES, MIPS_CTR_0, 44},
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/* Event 44 undefined on 1/3 */
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{ PMC_EV_MIPS24K_LOAD_TO_USE_STALLS, MIPS_CTR_0, 45},
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{ PMC_EV_MIPS24K_BASE_MISPRED_STALLS, MIPS_CTR_1, 45},
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{ PMC_EV_MIPS24K_CPO_READ_STALLS, MIPS_CTR_0, 46},
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{ PMC_EV_MIPS24K_BRANCH_MISPRED_CYCLES, MIPS_CTR_1, 46},
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/* Event 47 reserved */
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{ PMC_EV_MIPS24K_IFETCH_BUFFER_FULL, MIPS_CTR_0, 48},
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{ PMC_EV_MIPS24K_FETCH_BUFFER_ALLOCATED, MIPS_CTR_1, 48},
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{ PMC_EV_MIPS24K_EJTAG_ITRIGGER, MIPS_CTR_0, 49},
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{ PMC_EV_MIPS24K_EJTAG_DTRIGGER, MIPS_CTR_1, 49},
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{ PMC_EV_MIPS24K_FSB_LT_QUARTER, MIPS_CTR_0, 50},
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{ PMC_EV_MIPS24K_FSB_QUARTER_TO_HALF, MIPS_CTR_1, 50},
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{ PMC_EV_MIPS24K_FSB_GT_HALF, MIPS_CTR_0, 51},
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{ PMC_EV_MIPS24K_FSB_FULL_PIPELINE_STALLS, MIPS_CTR_1, 51},
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{ PMC_EV_MIPS24K_LDQ_LT_QUARTER, MIPS_CTR_0, 52},
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{ PMC_EV_MIPS24K_LDQ_QUARTER_TO_HALF, MIPS_CTR_1, 52},
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{ PMC_EV_MIPS24K_LDQ_GT_HALF, MIPS_CTR_0, 53},
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{ PMC_EV_MIPS24K_LDQ_FULL_PIPELINE_STALLS, MIPS_CTR_1, 53},
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{ PMC_EV_MIPS24K_WBB_LT_QUARTER, MIPS_CTR_0, 54},
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{ PMC_EV_MIPS24K_WBB_QUARTER_TO_HALF, MIPS_CTR_1, 54},
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{ PMC_EV_MIPS24K_WBB_GT_HALF, MIPS_CTR_0, 55},
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{ PMC_EV_MIPS24K_WBB_FULL_PIPELINE_STALLS, MIPS_CTR_1, 55},
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/* Events 56-63 reserved */
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{ PMC_EV_MIPS24K_REQUEST_LATENCY, MIPS_CTR_0, 61},
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{ PMC_EV_MIPS24K_REQUEST_COUNT, MIPS_CTR_1, 61}
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};
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const int mips_event_codes_size =
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sizeof(mips_event_codes) / sizeof(mips_event_codes[0]);
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struct mips_pmc_spec mips_pmc_spec = {
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.ps_cpuclass = PMC_CLASS_MIPS24K,
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.ps_cputype = PMC_CPU_MIPS_24K,
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.ps_capabilities = MIPS24K_PMC_CAPS,
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.ps_counter_width = 32
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};
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/*
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* Performance Count Register N
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*/
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uint64_t
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mips_pmcn_read(unsigned int pmc)
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{
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uint32_t reg = 0;
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KASSERT(pmc < mips_npmcs, ("[mips24k,%d] illegal PMC number %d",
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__LINE__, pmc));
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/* The counter value is the next value after the control register. */
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switch (pmc) {
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case 0:
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reg = mips_rd_perfcnt1();
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break;
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case 1:
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reg = mips_rd_perfcnt3();
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break;
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default:
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return 0;
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}
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return (reg);
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}
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uint64_t
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mips_pmcn_write(unsigned int pmc, uint64_t reg)
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{
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KASSERT(pmc < mips_npmcs, ("[mips24k,%d] illegal PMC number %d",
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__LINE__, pmc));
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switch (pmc) {
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case 0:
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mips_wr_perfcnt1(reg);
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break;
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case 1:
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mips_wr_perfcnt3(reg);
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break;
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default:
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return 0;
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}
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return (reg);
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}
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uint32_t
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mips_get_perfctl(int cpu, int ri, uint32_t event, uint32_t caps)
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{
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uint32_t config;
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config = event;
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config <<= MIPS24K_PMC_SELECT;
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if (caps & PMC_CAP_SYSTEM)
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config |= (MIPS24K_PMC_SUPER_ENABLE |
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MIPS24K_PMC_KERNEL_ENABLE);
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if (caps & PMC_CAP_USER)
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config |= MIPS24K_PMC_USER_ENABLE;
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if ((caps & (PMC_CAP_USER | PMC_CAP_SYSTEM)) == 0)
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config |= MIPS24K_PMC_ENABLE;
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if (caps & PMC_CAP_INTERRUPT)
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config |= MIPS24K_PMC_INTERRUPT_ENABLE;
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PMCDBG(MDP,ALL,2,"mips24k-get_perfctl ri=%d -> config=0x%x", ri, config);
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return (config);
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}
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