arch/sparc/include/asm/pcr.h

   1 #ifndef __PCR_H
   2 #define __PCR_H
   3
   4 struct pcr_ops {
   5         u64 (*read)(void);
   6         void (*write)(u64);
   7 };
   8 extern const struct pcr_ops *pcr_ops;
   9
  10 extern void deferred_pcr_work_irq(int irq, struct pt_regs *regs);
  11 extern void schedule_deferred_pcr_work(void);
  12
  13 #define PCR_PIC_PRIV            0x00000001 /* PIC access is privileged */
  14 #define PCR_STRACE              0x00000002 /* Trace supervisor events  */
  15 #define PCR_UTRACE              0x00000004 /* Trace user events        */
  16 #define PCR_N2_HTRACE           0x00000008 /* Trace hypervisor events  */
  17 #define PCR_N2_TOE_OV0          0x00000010 /* Trap if PIC 0 overflows  */
  18 #define PCR_N2_TOE_OV1          0x00000020 /* Trap if PIC 1 overflows  */
  19 #define PCR_N2_MASK0            0x00003fc0
  20 #define PCR_N2_MASK0_SHIFT      6
  21 #define PCR_N2_SL0              0x0003c000
  22 #define PCR_N2_SL0_SHIFT        14
  23 #define PCR_N2_OV0              0x00040000
  24 #define PCR_N2_MASK1            0x07f80000
  25 #define PCR_N2_MASK1_SHIFT      19
  26 #define PCR_N2_SL1              0x78000000
  27 #define PCR_N2_SL1_SHIFT        27
  28 #define PCR_N2_OV1              0x80000000
  29
  30 extern unsigned int picl_shift;
  31
  32 /* In order to commonize as much of the implementation as
  33  * possible, we use PICH as our counter.  Mostly this is
  34  * to accomodate Niagara-1 which can only count insn cycles
  35  * in PICH.
  36  */
  37 static inline u64 picl_value(unsigned int nmi_hz)
  38 {
  39         u32 delta = local_cpu_data().clock_tick / (nmi_hz << picl_shift);
  40
  41         return ((u64)((0 - delta) & 0xffffffff)) << 32;
  42 }
  43
  44 extern u64 pcr_enable;
  45
  46 #endif /* __PCR_H */