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/*

 * 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

#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. */

static int sbprof_zbprof_start(struct file *filp);

/* Effect: Stops collection of ZBbus profiles */

static 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 */