883823291d
This patch adds the SPU event based profiling funcitonality for the IBM Cell processor. Previously, the CELL OProfile kernel code supported PPU event, PPU cycle profiling and SPU cycle profiling. The addition of SPU event profiling allows the users to identify where in their SPU code various SPU evnets are occuring. This should help users further identify issues with their code. Note, SPU profiling has some limitations due to HW constraints. Only one event at a time can be used for profiling and SPU event profiling must be time sliced across all of the SPUs in a node. The patch adds a new arch specific file to the OProfile file system. The file has bit 0 set to indicate that the kernel supports SPU event profiling. The user tool must check this file/bit to make sure the kernel supports SPU event profiling before trying to do SPU event profiling. The user tool check is part of the user tool patch for SPU event profiling. Signed-off-by: Carl Love <carll@us.ibm.com> Signed-off-by: Robert Richter <robert.richter@amd.com>
108 lines
4 KiB
C
108 lines
4 KiB
C
/*
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* Cell Broadband Engine Performance Monitor
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*
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* (C) Copyright IBM Corporation 2006
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*
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* Author:
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* David Erb (djerb@us.ibm.com)
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* Kevin Corry (kevcorry@us.ibm.com)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef __ASM_CELL_PMU_H__
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#define __ASM_CELL_PMU_H__
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/* The Cell PMU has four hardware performance counters, which can be
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* configured as four 32-bit counters or eight 16-bit counters.
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*/
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#define NR_PHYS_CTRS 4
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#define NR_CTRS (NR_PHYS_CTRS * 2)
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/* Macros for the pm_control register. */
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#define CBE_PM_16BIT_CTR(ctr) (1 << (24 - ((ctr) & (NR_PHYS_CTRS - 1))))
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#define CBE_PM_ENABLE_PERF_MON 0x80000000
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#define CBE_PM_STOP_AT_MAX 0x40000000
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#define CBE_PM_TRACE_MODE_GET(pm_control) (((pm_control) >> 28) & 0x3)
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#define CBE_PM_TRACE_MODE_SET(mode) (((mode) & 0x3) << 28)
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#define CBE_PM_TRACE_BUF_OVFLW(bit) (((bit) & 0x1) << 17)
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#define CBE_PM_COUNT_MODE_SET(count) (((count) & 0x3) << 18)
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#define CBE_PM_FREEZE_ALL_CTRS 0x00100000
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#define CBE_PM_ENABLE_EXT_TRACE 0x00008000
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#define CBE_PM_SPU_ADDR_TRACE_SET(msk) (((msk) & 0x3) << 9)
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/* Macros for the trace_address register. */
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#define CBE_PM_TRACE_BUF_FULL 0x00000800
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#define CBE_PM_TRACE_BUF_EMPTY 0x00000400
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#define CBE_PM_TRACE_BUF_DATA_COUNT(ta) ((ta) & 0x3ff)
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#define CBE_PM_TRACE_BUF_MAX_COUNT 0x400
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/* Macros for the pm07_control registers. */
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#define CBE_PM_CTR_INPUT_MUX(pm07_control) (((pm07_control) >> 26) & 0x3f)
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#define CBE_PM_CTR_INPUT_CONTROL 0x02000000
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#define CBE_PM_CTR_POLARITY 0x01000000
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#define CBE_PM_CTR_COUNT_CYCLES 0x00800000
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#define CBE_PM_CTR_ENABLE 0x00400000
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#define PM07_CTR_INPUT_MUX(x) (((x) & 0x3F) << 26)
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#define PM07_CTR_INPUT_CONTROL(x) (((x) & 1) << 25)
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#define PM07_CTR_POLARITY(x) (((x) & 1) << 24)
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#define PM07_CTR_COUNT_CYCLES(x) (((x) & 1) << 23)
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#define PM07_CTR_ENABLE(x) (((x) & 1) << 22)
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/* Macros for the pm_status register. */
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#define CBE_PM_CTR_OVERFLOW_INTR(ctr) (1 << (31 - ((ctr) & 7)))
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enum pm_reg_name {
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group_control,
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debug_bus_control,
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trace_address,
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ext_tr_timer,
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pm_status,
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pm_control,
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pm_interval,
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pm_start_stop,
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};
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/* Routines for reading/writing the PMU registers. */
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extern u32 cbe_read_phys_ctr(u32 cpu, u32 phys_ctr);
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extern void cbe_write_phys_ctr(u32 cpu, u32 phys_ctr, u32 val);
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extern u32 cbe_read_ctr(u32 cpu, u32 ctr);
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extern void cbe_write_ctr(u32 cpu, u32 ctr, u32 val);
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extern u32 cbe_read_pm07_control(u32 cpu, u32 ctr);
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extern void cbe_write_pm07_control(u32 cpu, u32 ctr, u32 val);
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extern u32 cbe_read_pm(u32 cpu, enum pm_reg_name reg);
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extern void cbe_write_pm(u32 cpu, enum pm_reg_name reg, u32 val);
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extern u32 cbe_get_ctr_size(u32 cpu, u32 phys_ctr);
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extern void cbe_set_ctr_size(u32 cpu, u32 phys_ctr, u32 ctr_size);
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extern void cbe_enable_pm(u32 cpu);
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extern void cbe_disable_pm(u32 cpu);
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extern void cbe_read_trace_buffer(u32 cpu, u64 *buf);
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extern void cbe_enable_pm_interrupts(u32 cpu, u32 thread, u32 mask);
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extern void cbe_disable_pm_interrupts(u32 cpu);
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extern u32 cbe_get_and_clear_pm_interrupts(u32 cpu);
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extern void cbe_sync_irq(int node);
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#define CBE_COUNT_SUPERVISOR_MODE 0
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#define CBE_COUNT_HYPERVISOR_MODE 1
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#define CBE_COUNT_PROBLEM_MODE 2
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#define CBE_COUNT_ALL_MODES 3
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#endif /* __ASM_CELL_PMU_H__ */
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