111 lines
3.5 KiB
C
111 lines
3.5 KiB
C
/*
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* Copyright (C) 2001 Broadcom Corporation
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef __ASM_SIBYTE_TRACE_PROF_H
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#define __ASM_SIBYTE_TRACE_PROF_H
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#undef DBG
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#if SBPROF_TB_DEBUG
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#define DBG(a) a
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#else
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#define DBG(a)
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#endif
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#define SBPROF_TB_MAJOR 240
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#define DEVNAME "bcm1250_tbprof"
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typedef u_int64_t tb_sample_t[6*256];
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struct sbprof_tb {
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int open;
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tb_sample_t *sbprof_tbbuf;
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int next_tb_sample;
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volatile int tb_enable;
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volatile int tb_armed;
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wait_queue_head_t tb_sync;
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wait_queue_head_t tb_read;
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};
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#define MAX_SAMPLE_BYTES (24*1024*1024)
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#define MAX_TBSAMPLE_BYTES (12*1024*1024)
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#define MAX_SAMPLES (MAX_SAMPLE_BYTES/sizeof(u_int32_t))
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#define TB_SAMPLE_SIZE (sizeof(tb_sample_t))
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#define MAX_TB_SAMPLES (MAX_TBSAMPLE_BYTES/TB_SAMPLE_SIZE)
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/* IOCTLs */
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#define SBPROF_ZBSTART _IOW('s', 0, int)
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#define SBPROF_ZBSTOP _IOW('s', 1, int)
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#define SBPROF_ZBWAITFULL _IOW('s', 2, int)
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/***************************************************************************
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* Routines for gathering ZBbus profiles using trace buffer
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***************************************************************************/
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/* Requires: Already called zclk_timer_init with a value that won't
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saturate 40 bits. No subsequent use of SCD performance counters
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or trace buffer.
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Effect: Starts gathering random ZBbus profiles using trace buffer. */
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extern int sbprof_zbprof_start(struct file *filp);
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/* Effect: Stops collection of ZBbus profiles */
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extern int sbprof_zbprof_stop(void);
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/***************************************************************************
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* Routines for using 40-bit SCD cycle counter
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*
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* Client responsible for either handling interrupts or making sure
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* the cycles counter never saturates, e.g., by doing
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* zclk_timer_init(0) at least every 2^40 - 1 ZCLKs.
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***************************************************************************/
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/* Configures SCD counter 0 to count ZCLKs starting from val;
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Configures SCD counters1,2,3 to count nothing.
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Must not be called while gathering ZBbus profiles.
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unsigned long long val; */
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#define zclk_timer_init(val) \
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__asm__ __volatile__ (".set push;" \
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".set mips64;" \
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"la $8, 0xb00204c0;" /* SCD perf_cnt_cfg */ \
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"sd %0, 0x10($8);" /* write val to counter0 */ \
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"sd %1, 0($8);" /* config counter0 for zclks*/ \
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".set pop" \
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: /* no outputs */ \
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/* enable, counter0 */ \
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: /* inputs */ "r"(val), "r" ((1ULL << 33) | 1ULL) \
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: /* modifies */ "$8" )
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/* Reads SCD counter 0 and puts result in value
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unsigned long long val; */
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#define zclk_get(val) \
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__asm__ __volatile__ (".set push;" \
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".set mips64;" \
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"la $8, 0xb00204c0;" /* SCD perf_cnt_cfg */ \
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"ld %0, 0x10($8);" /* write val to counter0 */ \
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".set pop" \
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: /* outputs */ "=r"(val) \
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: /* inputs */ \
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: /* modifies */ "$8" )
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#endif /* __ASM_SIBYTE_TRACE_PROF_H */
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