111 lines
3.5 KiB
C
111 lines
3.5 KiB
C
|
/*
|
||
|
|
* Copyright (C) 2001 Broadcom Corporation
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU General Public License
|
||
|
|
* as published by the Free Software Foundation; either version 2
|
||
|
|
* of the License, or (at your option) any later version.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
* GNU General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this program; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef __ASM_SIBYTE_TRACE_PROF_H
|
||
|
|
#define __ASM_SIBYTE_TRACE_PROF_H
|
||
|
|
|
||
|
|
#undef DBG
|
||
|
|
#if SBPROF_TB_DEBUG
|
||
|
|
#define DBG(a) a
|
||
|
|
#else
|
||
|
|
#define DBG(a)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#define SBPROF_TB_MAJOR 240
|
||
|
|
#define DEVNAME "bcm1250_tbprof"
|
||
|
|
|
||
|
|
typedef u_int64_t tb_sample_t[6*256];
|
||
|
|
|
||
|
|
struct sbprof_tb {
|
||
|
|
int open;
|
||
|
|
tb_sample_t *sbprof_tbbuf;
|
||
|
|
int next_tb_sample;
|
||
|
|
|
||
|
|
volatile int tb_enable;
|
||
|
|
volatile int tb_armed;
|
||
|
|
|
||
|
|
wait_queue_head_t tb_sync;
|
||
|
|
wait_queue_head_t tb_read;
|
||
|
|
};
|
||
|
|
|
||
|
|
#define MAX_SAMPLE_BYTES (24*1024*1024)
|
||
|
|
#define MAX_TBSAMPLE_BYTES (12*1024*1024)
|
||
|
|
|
||
|
|
#define MAX_SAMPLES (MAX_SAMPLE_BYTES/sizeof(u_int32_t))
|
||
|
|
#define TB_SAMPLE_SIZE (sizeof(tb_sample_t))
|
||
|
|
#define MAX_TB_SAMPLES (MAX_TBSAMPLE_BYTES/TB_SAMPLE_SIZE)
|
||
|
|
|
||
|
|
/* IOCTLs */
|
||
|
|
#define SBPROF_ZBSTART _IOW('s', 0, int)
|
||
|
|
#define SBPROF_ZBSTOP _IOW('s', 1, int)
|
||
|
|
#define SBPROF_ZBWAITFULL _IOW('s', 2, int)
|
||
|
|
|
||
|
|
/***************************************************************************
|
||
|
|
* Routines for gathering ZBbus profiles using trace buffer
|
||
|
|
***************************************************************************/
|
||
|
|
|
||
|
|
/* Requires: Already called zclk_timer_init with a value that won't
|
||
|
|
saturate 40 bits. No subsequent use of SCD performance counters
|
||
|
|
or trace buffer.
|
||
|
|
Effect: Starts gathering random ZBbus profiles using trace buffer. */
|
||
|
|
extern int sbprof_zbprof_start(struct file *filp);
|
||
|
|
|
||
|
|
/* Effect: Stops collection of ZBbus profiles */
|
||
|
|
extern int sbprof_zbprof_stop(void);
|
||
|
|
|
||
|
|
|
||
|
|
/***************************************************************************
|
||
|
|
* Routines for using 40-bit SCD cycle counter
|
||
|
|
*
|
||
|
|
* Client responsible for either handling interrupts or making sure
|
||
|
|
* the cycles counter never saturates, e.g., by doing
|
||
|
|
* zclk_timer_init(0) at least every 2^40 - 1 ZCLKs.
|
||
|
|
***************************************************************************/
|
||
|
|
|
||
|
|
/* Configures SCD counter 0 to count ZCLKs starting from val;
|
||
|
|
Configures SCD counters1,2,3 to count nothing.
|
||
|
|
Must not be called while gathering ZBbus profiles.
|
||
|
|
|
||
|
|
unsigned long long val; */
|
||
|
|
#define zclk_timer_init(val) \
|
||
|
|
__asm__ __volatile__ (".set push;" \
|
||
|
|
".set mips64;" \
|
||
|
|
"la $8, 0xb00204c0;" /* SCD perf_cnt_cfg */ \
|
||
|
|
"sd %0, 0x10($8);" /* write val to counter0 */ \
|
||
|
|
"sd %1, 0($8);" /* config counter0 for zclks*/ \
|
||
|
|
".set pop" \
|
||
|
|
: /* no outputs */ \
|
||
|
|
/* enable, counter0 */ \
|
||
|
|
: /* inputs */ "r"(val), "r" ((1ULL << 33) | 1ULL) \
|
||
|
|
: /* modifies */ "$8" )
|
||
|
|
|
||
|
|
|
||
|
|
/* Reads SCD counter 0 and puts result in value
|
||
|
|
unsigned long long val; */
|
||
|
|
#define zclk_get(val) \
|
||
|
|
__asm__ __volatile__ (".set push;" \
|
||
|
|
".set mips64;" \
|
||
|
|
"la $8, 0xb00204c0;" /* SCD perf_cnt_cfg */ \
|
||
|
|
"ld %0, 0x10($8);" /* write val to counter0 */ \
|
||
|
|
".set pop" \
|
||
|
|
: /* outputs */ "=r"(val) \
|
||
|
|
: /* inputs */ \
|
||
|
|
: /* modifies */ "$8" )
|
||
|
|
|
||
|
|
#endif /* __ASM_SIBYTE_TRACE_PROF_H */
|