include/asm-powerpc/cell-pmu.h

   1 /*
   2  * Cell Broadband Engine Performance Monitor
   3  *
   4  * (C) Copyright IBM Corporation 2006
   5  *
   6  * Author:
   7  *   David Erb (djerb@us.ibm.com)
   8  *   Kevin Corry (kevcorry@us.ibm.com)
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2, or (at your option)
  13  * any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23  */
  24
  25 #ifndef __ASM_CELL_PMU_H__
  26 #define __ASM_CELL_PMU_H__
  27
  28 /* The Cell PMU has four hardware performance counters, which can be
  29  * configured as four 32-bit counters or eight 16-bit counters.
  30  */
  31 #define NR_PHYS_CTRS 4
  32 #define NR_CTRS      (NR_PHYS_CTRS * 2)
  33
  34 /* Macros for the pm_control register. */
  35 #define CBE_PM_16BIT_CTR(ctr)              (1 << (24 - ((ctr) & (NR_PHYS_CTRS - 1))))
  36 #define CBE_PM_ENABLE_PERF_MON             0x80000000
  37 #define CBE_PM_STOP_AT_MAX                 0x40000000
  38 #define CBE_PM_TRACE_MODE_GET(pm_control)  (((pm_control) >> 28) & 0x3)
  39 #define CBE_PM_TRACE_MODE_SET(mode)        (((mode)  & 0x3) << 28)
  40 #define CBE_PM_COUNT_MODE_SET(count)       (((count) & 0x3) << 18)
  41 #define CBE_PM_FREEZE_ALL_CTRS             0x00100000
  42 #define CBE_PM_ENABLE_EXT_TRACE            0x00008000
  43
  44 /* Macros for the trace_address register. */
  45 #define CBE_PM_TRACE_BUF_FULL              0x00000800
  46 #define CBE_PM_TRACE_BUF_EMPTY             0x00000400
  47 #define CBE_PM_TRACE_BUF_DATA_COUNT(ta)    ((ta) & 0x3ff)
  48 #define CBE_PM_TRACE_BUF_MAX_COUNT         0x400
  49
  50 /* Macros for the pm07_control registers. */
  51 #define CBE_PM_CTR_INPUT_MUX(pm07_control) (((pm07_control) >> 26) & 0x3f)
  52 #define CBE_PM_CTR_INPUT_CONTROL           0x02000000
  53 #define CBE_PM_CTR_POLARITY                0x01000000
  54 #define CBE_PM_CTR_COUNT_CYCLES            0x00800000
  55 #define CBE_PM_CTR_ENABLE                  0x00400000
  56
  57 /* Macros for the pm_status register. */
  58 #define CBE_PM_CTR_OVERFLOW_INTR(ctr)      (1 << (31 - ((ctr) & 7)))
  59
  60 enum pm_reg_name {
  61         group_control,
  62         debug_bus_control,
  63         trace_address,
  64         ext_tr_timer,
  65         pm_status,
  66         pm_control,
  67         pm_interval,
  68         pm_start_stop,
  69 };
  70
  71 /* Routines for reading/writing the PMU registers. */
  72 extern u32  cbe_read_phys_ctr(u32 cpu, u32 phys_ctr);
  73 extern void cbe_write_phys_ctr(u32 cpu, u32 phys_ctr, u32 val);
  74 extern u32  cbe_read_ctr(u32 cpu, u32 ctr);
  75 extern void cbe_write_ctr(u32 cpu, u32 ctr, u32 val);
  76
  77 extern u32  cbe_read_pm07_control(u32 cpu, u32 ctr);
  78 extern void cbe_write_pm07_control(u32 cpu, u32 ctr, u32 val);
  79 extern u32  cbe_read_pm(u32 cpu, enum pm_reg_name reg);
  80 extern void cbe_write_pm(u32 cpu, enum pm_reg_name reg, u32 val);
  81
  82 extern u32  cbe_get_ctr_size(u32 cpu, u32 phys_ctr);
  83 extern void cbe_set_ctr_size(u32 cpu, u32 phys_ctr, u32 ctr_size);
  84
  85 extern void cbe_enable_pm(u32 cpu);
  86 extern void cbe_disable_pm(u32 cpu);
  87
  88 extern void cbe_read_trace_buffer(u32 cpu, u64 *buf);
  89
  90 extern void cbe_enable_pm_interrupts(u32 cpu, u32 thread, u32 mask);
  91 extern void cbe_disable_pm_interrupts(u32 cpu);
  92 extern u32  cbe_query_pm_interrupts(u32 cpu);
  93 extern u32  cbe_clear_pm_interrupts(u32 cpu);
  94 extern void cbe_sync_irq(int node);
  95
  96 /* Utility functions, macros */
  97 extern u32 cbe_get_hw_thread_id(int cpu);
  98
  99 #define cbe_cpu_to_node(cpu) ((cpu) >> 1)
 100
 101 #define CBE_COUNT_SUPERVISOR_MODE       0
 102 #define CBE_COUNT_HYPERVISOR_MODE       1
 103 #define CBE_COUNT_PROBLEM_MODE          2
 104 #define CBE_COUNT_ALL_MODES             3
 105
 106 /* Macros for the pm07_control registers. */
 107 #define PM07_CTR_INPUT_MUX(x)                    (((x) & 0x3F) << 26)
 108 #define PM07_CTR_INPUT_CONTROL(x)                (((x) & 1) << 25)
 109 #define PM07_CTR_POLARITY(x)                     (((x) & 1) << 24)
 110 #define PM07_CTR_COUNT_CYCLES(x)                 (((x) & 1) << 23)
 111 #define PM07_CTR_ENABLE(x)                       (((x) & 1) << 22)
 112
 113 #endif /* __ASM_CELL_PMU_H__ */