patch-2.4.19 linux-2.4.19/arch/mips/sibyte/sb1250/bcm1250_tbprof.h

• Lines: 101
• Date: Fri Aug 2 17:39:43 2002
• Orig file: linux-2.4.18/arch/mips/sibyte/sb1250/bcm1250_tbprof.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.18/arch/mips/sibyte/sb1250/bcm1250_tbprof.h linux-2.4.19/arch/mips/sibyte/sb1250/bcm1250_tbprof.h
@@ -0,0 +1,100 @@
+/*
+ * 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 BCM1250_TBPROF_H
+
+#if SBPROF_TB_DEBUG
+#define DBG(a) a
+#else
+#define DBG(a)
+#endif
+
+#define SBPROF_TB_MAJOR 240
+
+typedef u_int64_t tb_sample_t[6*256];
+
+struct sbprof_tb {
+	tb_sample_t *sbprof_tbbuf;
+	int          next_tb_sample;
+
+	volatile int tb_enable;
+	volatile int tb_armed;
+
+	wait_queue_head_t tb_sync;
+};
+
+#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)
+
+/***************************************************************************
+ * 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