arch/arm/plat-feroceon/mv_hal/cpu/pj4/mvPJ4Cntrs.h

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#ifndef __mvPJ4Cntrs_h__
#define __mvPJ4Cntrs_h__

#define MV_CPU_CNTR_SIZE			32 /* bits */

#define MRVL_PJ4B_CCNT_BIT_OFFSET 	31

#define	MRVL_PJ4B_PMU_ENABLE	0x001	/* Enable counters */
#define MRVL_PJ4B_PMN_RESET		0x002	/* Reset event counters */
#define	MRVL_PJ4B_CCNT_RESET	0x004	/* Reset cycles counter */
#define	MRVL_PJ4B_PMU_RESET		(MRVL_PJ4B_CCNT_RESET | MRVL_PJ4B_PMN_RESET)
#define MRVL_PJ4B_PMU_CNT64		0x008	/* Make CCNT count every 64th cycle */

/*
* Different types of events that can be counted by the Marvell PJ4 Performance Monitor
*
*/
enum mrvl_pj4b_perf_types  {
	MRVL_PJ4B_SOFTWARE_INCR = 0x00,	/* software increment */
	MRVL_PJ4B_IFU_IFETCH_REFILL = 0x01, 	/* instruction fetch that cause a refill */
						/* at the lowest level of instruction or unified cache */
	MRVL_PJ4B_IF_TLB_REFILL = 0x02,		/* instruction fetch that cause a TLB refill at the lowest level of TLB */
	MRVL_PJ4B_DATA_RW_CACHE_REFILL = 0x03,	/* data read or write operation that causes a refill of */
						/* at the lowest level of data or unified cache */
	MRVL_PJ4B_DATA_RW_CACHE_ACCESS = 0x04,	/* data read or write operation that causes a cache access */
						/* at the lowest level of data or unified cache */
	MRVL_PJ4B_DATA_RW_TLB_REFILL = 0x05,	/* data read or write operation that causes a TLB refill */
						/* at the lowest level of TLB */
	MRVL_PJ4B_DATA_READ_INST_EXEC = 0x06,	/* data read architecturally executed */
	MRVL_PJ4B_DATA_WRIT_INST_EXEC = 0x07,	/* data write architecturally executed */
	MRVL_PJ4B_INSN_EXECUTED = 0x08,		/* instruction architecturally executed */
	MRVL_PJ4B_EXCEPTION_TAKEN = 0x09,	/* exception taken */
	MRVL_PJ4B_EXCEPTION_RETURN = 0x0a,	/* exception return architecturally executed */
	MRVL_PJ4B_INSN_WR_CONTEXTIDR = 0x0b,	/* instruction that writes to the Context ID Register */
						/* architecturally executed */
	MRVL_PJ4B_SW_CHANGE_PC = 0x0c,		/* software change of PC, except by an exception, architecturally executed */
	MRVL_PJ4B_BR_EXECUTED = 0x0d,		/* immediate branch architecturally executed, taken or not taken */
	MRVL_PJ4B_PROCEDURE_RETURN = 0x0e,	/* procedure return architecturally executed */
	MRVL_PJ4B_UNALIGNED_ACCESS = 0x0f,	/* unaligned access architecturally executed */
	MRVL_PJ4B_BR_INST_MISS_PRED = 0x10,	/* branch mispredicted or not predicted */
	MRVL_PJ4B_CYCLE_COUNT = 0x11,		/* cycle count */
	MRVL_PJ4B_BR_PRED_TAKEN = 0x12,		/* branches or other change in the program flow */
						/* that could have been predicted */
						/* by the branch prediction resources of the processor */
	MRVL_PJ4B_DCACHE_READ_HIT = 0x40,	/* counts the number of Data Cache read hits */
	MRVL_PJ4B_DCACHE_READ_MISS = 0x41,	/* connts the number of Data Cache read misses */
	MRVL_PJ4B_DCACHE_WRITE_HIT = 0x42,	/* counts the number of Data Cache write hits */
	MRVL_PJ4B_DCACHE_WRITE_MISS = 0x43,	/* counts the number of Data Cache write misses */
	MRVL_PJ4B_MMU_BUS_REQUEST = 0x44,	/* counts the number of cycles of request to the MMU Bus */
	MRVL_PJ4B_ICACHE_BUS_REQUEST = 0x45,	/* counts the number of cycles the Instruction Cache requests the bus */
						/* until the data return */
	MRVL_PJ4B_WB_WRITE_LATENCY = 0x46,	/* counts the number of cycles the Write Buffer requests the bus */
	MRVL_PJ4B_HOLD_LDM_STM = 0x47,		/* counts the number of cycles the pipeline is held */
						/* because of a load/store multiple instruction */
	MRVL_PJ4B_NO_DUAL_CFLAG = 0x48,		/* counts the number of cycles the processor cannot dual issue */
						/* because of a Carry flag dependency */
	MRVL_PJ4B_NO_DUAL_REGISTER_PLUS = 0x49,	/* counts the number of cycles the processor cannot dual issue because */
						/* the register file does not have enough read ports and at least one other reason */
	MRVL_PJ4B_LDST_ROB0_ON_HOLD = 0x4a,	/* counts the number of cycles a load or store instruction waits */
						/* to retire from ROB0 */
	MRVL_PJ4B_LDST_ROB1_ON_HOLD = 0x4b,	/* counts the number of cycles a load or store instruction waits */
						/* to retire from ROB0=1 */
	MRVL_PJ4B_DATA_WRITE_ACCESS_COUNT = 0x4c, 	/* counts the number of any Data write access */
	MRVL_PJ4B_DATA_READ_ACCESS_COUNT = 0x4d, 	/* counts the number of any Data read access */
	MRVL_PJ4B_A2_STALL = 0x4e, 		/* counts the number of cycles ALU A2 is stalled */
	/*TODO: implement with fabric counters*/
	MRVL_PJ4B_L2C_WRITE_HIT = 0x4f, 	/* counts the number of write accesses to addresses already in the L2C */
	MRVL_PJ4B_L2C_WRITE_MISS = 0x50,	/* counts the number of write accesses to addresses not in the L2C */
	MRVL_PJ4B_L2C_READ_COUNT = 0x51,	/* counts the number of L2C cache-to-bus external read request */
	/*TODO: end*/
	MRVL_PJ4B_ICACHE_READ_MISS = 0x60, 	/* counts the number of Instruction Cache read misses */
	MRVL_PJ4B_ITLB_MISS = 0x61, 		/* counts the number of instruction TLB miss */
	MRVL_PJ4B_SINGLE_ISSUE = 0x62, 		/* counts the number of cycles the processor single issues */
	MRVL_PJ4B_BR_RETIRED = 0x63, 		/* counts the number of times one branch retires */
	MRVL_PJ4B_ROB_FULL = 0x64, 		/* counts the number of cycles the Re-order Buffer (ROB) is full */
	MRVL_PJ4B_MMU_READ_BEAT = 0x65, 	/* counts the number of times the bus returns RDY to the MMU */
	MRVL_PJ4B_WB_WRITE_BEAT = 0x66, 	/* counts the number times the bus returns ready to the Write Buffer */
	MRVL_PJ4B_DUAL_ISSUE = 0x67, 		/* counts the number of cycles the processor dual issues */
	MRVL_PJ4B_NO_DUAL_RAW = 0x68, 		/* counts the number of cycles the processor cannot dual issue */
						/* because of a Read after Write hazard */
	MRVL_PJ4B_HOLD_IS = 0x69, 		/* counts the number of cycles the issue is held */
	/*TODO: implement with fabric counters*/
	MRVL_PJ4B_L2C_LATENCY = 0x6a, 		/* counts the latency for the most recent L2C read */
						/* from the external bus Counts cycles */
	/*TODO: end*/
	MRVL_PJ4B_DCACHE_ACCESS = 0x70, 	/* counts the number of times the Data cache is accessed */
	MRVL_PJ4B_DTLB_MISS = 0x71, 		/* counts the number of data TLB misses */
	MRVL_PJ4B_BR_PRED_MISS = 0x72, 		/* counts the number of mispredicted branches */
	MRVL_PJ4B_A1_STALL = 0x74, 		/* counts the number of cycles ALU A1 is stalled */
	MRVL_PJ4B_DCACHE_READ_LATENCY = 0x75, 	/* counts the number of cycles the Data cache requests the bus for a read */
	MRVL_PJ4B_DCACHE_WRITE_LATENCY = 0x76, 	/* counts the number of cycles the Data cache requests the bus */
						/* for a write */
	MRVL_PJ4B_NO_DUAL_REGISTER_FILE = 0x77, /* counts the number of cycles the processor cannot dual issue */
						/* because the register file doesn't have enough read ports */
	MRVL_PJ4B_BIU_SIMULTANEOUS_ACCESS = 0x78, 	/* BIU Simultaneous Access */
	MRVL_PJ4B_L2C_READ_HIT = 0x79, 		/* counts the number of L2C cache-to-bus external read requests */
	MRVL_PJ4B_L2C_READ_MISS = 0x7a, 	/* counts the number of L2C read accesses that resulted */
						/* in an external read request */
	MRVL_PJ4B_L2C_EVICTION = 0x7b, 		/* counts the number of evictions (CastOUT) of a line from the L2 cache */
	MRVL_PJ4B_TLB_MISS = 0x80, 		/* counts the number of instruction and data TLB misses */
	MRVL_PJ4B_BR_TAKEN = 0x81, 		/* counts the number of taken branches */
	MRVL_PJ4B_WB_FULL = 0x82, 		/* counts the number of cycles WB is full */
	MRVL_PJ4B_DCACHE_READ_BEAT = 0x83, 	/* counts the number of times the bus returns Data to */
						/* the Data cache during read request */
	MRVL_PJ4B_DCACHE_WRITE_BEAT = 0x84, 	/* counts the number of times the bus returns ready to */
						/* the Data cache during write request */
	MRVL_PJ4B_NO_DUAL_HW = 0x85, 		/* counts the number of cycles the processor cannot dual issue */
						/* because of hardware conflict */
	MRVL_PJ4B_NO_DUAL_MULTIPLE = 0x86, 	/* counts the number of cycles the processor cannot dual issue */
						/* because of multiple reasons */
	MRVL_PJ4B_BIU_ANY_ACCESS = 0x87, 	/* counts the number of cycles the BIU is accessed by any unit */
	MRVL_PJ4B_MAIN_TLB_REFILL_BY_ICACHE = 0x88, 	/* counts the number of instruction fetch operations */
							/* that causes a Main TLB walk */
	MRVL_PJ4B_MAIN_TLB_REFILL_BY_DCACHE = 0x89, 	/* counts the number of Data read or write operations */
							/* that causes a Main TLB walk */
	MRVL_PJ4B_ICACHE_READ_BEAT = 0x8a, 	/* counts the number of times the bus returns RDY to the instruction cache */
	MRVL_PJ4B_PMUEXT_IN0 = 0x90, 		/* counts any event from external input source PMUEXTIN[0] */
	MRVL_PJ4B_PMUEXT_IN1 = 0x91, 		/* counts any event from external input source PMUEXTIN[1] */
	MRVL_PJ4B_PMUEXT_IN0_IN1 = 0x92, 	/* counts any event from both external input sources PMUEXTIN[0] */
						/* and PMUEXTIN[1] */
	MRVL_PJ4B_WMMX2_STORE_FIFO_FULL = 0xc0, /* counts the number of cycles when the WMMX2 store FIFO is full */
	MRVL_PJ4B_WMMX2_FINISH_FIFO_FULL = 0xc1,/* counts the number of cycles when the WMMX2 finish FIFO is full */
	MRVL_PJ4B_WMMX2_INST_FIFO_FULL = 0xc2, 	/* counts the number of cycles when the WMMX2 instruction FIFO is full */
	MRVL_PJ4B_WMMX2_INST_RETIRED = 0xc3, 	/* counts the number of retired WMMX2 instructions */
	MRVL_PJ4B_WMMX2_BUSY = 0xc4, 		/* counts the number of cycles when the WMMX2 is busy */
	MRVL_PJ4B_WMMX2_HOLD_MI = 0xc5, 	/* counts the number of cycles when WMMX2 holds the issue stage */
	MRVL_PJ4B_WMMX2_HOLD_MW = 0xc6, 	/* counts the number of cycles when WMMX2 holds the write back stage */
	/* EVT_CCNT is not hardware defined */
	MRVL_PJ4B_EVT_CCNT = 0xFE,		/* CPU_CYCLE */
	MRVL_PJ4B_EVT_UNUSED = 0xFF,
};

enum  pj4b_pmu_counters {
	MRVL_PJ4B_CCNT = 0,
	MRVL_PJ4B_PMN0,
	MRVL_PJ4B_PMN1,
	MRVL_PJ4B_PMN2,
	MRVL_PJ4B_PMN3,
	MRVL_PJ4B_PMN4,
	MRVL_PJ4B_PMN5,
	MRVL_PJ4B_MAX_COUNTERS
};


static inline void mrvl_pj4b_pmu_intr_disable(u32 val)
{
	asm volatile("mcr p15, 0, %0, c9, c14, 2" : : "r"(val));
}

static inline void mrvl_pj4b_pmu_cntr_disable(u32 val)
{
	asm volatile("mcr p15, 0, %0, c9, c12, 2" : : "r"(val));
}

static inline void mrvl_pj4b_pmu_intr_enable(u32 val)
{
	asm volatile("mcr p15, 0, %0, c9, c14, 1" : : "r"(val));
}

static inline void mrvl_pj4b_pmu_cntr_enable(u32 val)
{
	asm volatile("mcr p15, 0, %0, c9, c12, 1" : : "r"(val));
}

static inline void mrvl_pj4b_pmu_select_event(u32 cntr, u32 evt)
{
	asm volatile("mcr p15, 0, %0, c9, c12, 5" : : "r"(cntr));
	asm volatile("mcr p15, 0, %0, c9, c13, 1" : : "r"(evt));
}


static inline void mrvl_pj4b_write_pmnc(u32 val)
{
	asm volatile("mcr p15, 0, %0, c9, c12, 0" : : "r"(val));
}

static inline u32 mrvl_pj4b_read_pmnc(void)
{
	u32 val;

	asm volatile("mrc p15, 0, %0, c9, c12, 0" : "=r"(val));

	return val;
}

static INLINE MV_U64 mvCpuPmCntrRead(const int counter)
{
	MV_U32 val;

	asm volatile("mcr p15, 0, %0, c9, c12, 5" : : "r"(counter));
	asm volatile("mrc p15, 0, %0, c9, c13, 2" : "=r"(val));

	return (MV_U64)val;
}

static INLINE MV_U64 mvCpuCyclesCntrRead(void)
{
	MV_U32 val;

	asm volatile("mrc p15, 0, %0, c9, c13, 0" : "=r" (val));

	return (MV_U64)val;
}

/* Read counter register */
static INLINE MV_U64 mvCpuCntrsRead(const int counter)
{
	MV_U64 val = 0;

	switch (counter) {
	case MRVL_PJ4B_CCNT:
		val = mvCpuCyclesCntrRead();
		break;

	case MRVL_PJ4B_PMN0:
	case MRVL_PJ4B_PMN1:
	case MRVL_PJ4B_PMN2:
	case MRVL_PJ4B_PMN3:
	case MRVL_PJ4B_PMN4:
	case MRVL_PJ4B_PMN5:
		val = mvCpuPmCntrRead(counter - MRVL_PJ4B_PMN0);
		break;
	}
	return (MV_U64)val;
}

static INLINE void mvCpuCntrsReset(void)
{
	MV_U32	reg;

	reg = mrvl_pj4b_read_pmnc();
	reg |= MRVL_PJ4B_PMU_RESET;
	mrvl_pj4b_write_pmnc(reg);
}


#endif /* __mvPJ4Cntrs_h__ */