arch/arm/oprofile/op_model_v6.c

   1 /**
   2  * @file op_model_v6.c
   3  * ARM11 Performance Monitor Driver
   4  *
   5  * Based on op_model_xscale.c
   6  *
   7  * @remark Copyright 2000-2004 Deepak Saxena <dsaxena@mvista.com>
   8  * @remark Copyright 2000-2004 MontaVista Software Inc
   9  * @remark Copyright 2004 Dave Jiang <dave.jiang@intel.com>
  10  * @remark Copyright 2004 Intel Corporation
  11  * @remark Copyright 2004 Zwane Mwaikambo <zwane@arm.linux.org.uk>
  12  * @remark Copyright 2004 OProfile Authors
  13  *
  14  * @remark Read the file COPYING
  15  *
  16  * @author Tony Lindgren <tony@atomide.com>
  17  */
  18
  19 /* #define DEBUG */
  20 #include <linux/types.h>
  21 #include <linux/errno.h>
  22 #include <linux/sched.h>
  23 #include <linux/oprofile.h>
  24 #include <linux/interrupt.h>
  25 #include <asm/irq.h>
  26 #include <asm/system.h>
  27
  28 #include "op_counter.h"
  29 #include "op_arm_model.h"
  30 #include "op_model_arm11_core.h"
  31
  32 static int irqs[] = {
  33 #ifdef CONFIG_ARCH_OMAP2
  34         3,
  35 #endif
  36 #ifdef CONFIG_ARCH_BCMRING
  37         IRQ_PMUIRQ, /* for BCMRING, ARM PMU interrupt is 43 */
  38 #endif
  39 };
  40
  41 static void armv6_pmu_stop(void)
  42 {
  43         arm11_stop_pmu();
  44         arm11_release_interrupts(irqs, ARRAY_SIZE(irqs));
  45 }
  46
  47 static int armv6_pmu_start(void)
  48 {
  49         int ret;
  50
  51         ret = arm11_request_interrupts(irqs, ARRAY_SIZE(irqs));
  52         if (ret >= 0)
  53                 ret = arm11_start_pmu();
  54
  55         return ret;
  56 }
  57
  58 static int armv6_detect_pmu(void)
  59 {
  60         return 0;
  61 }
  62
  63 struct op_arm_model_spec op_armv6_spec = {
  64         .init           = armv6_detect_pmu,
  65         .num_counters   = 3,
  66         .setup_ctrs     = arm11_setup_pmu,
  67         .start          = armv6_pmu_start,
  68         .stop           = armv6_pmu_stop,
  69         .name           = "arm/armv6",
  70 };