diff options
Diffstat (limited to 'arch/powerpc/kernel/ppc970-pmu.c')
| -rw-r--r-- | arch/powerpc/kernel/ppc970-pmu.c | 72 |
1 files changed, 69 insertions, 3 deletions
diff --git a/arch/powerpc/kernel/ppc970-pmu.c b/arch/powerpc/kernel/ppc970-pmu.c index c3256580be1..aed8ccd7c07 100644 --- a/arch/powerpc/kernel/ppc970-pmu.c +++ b/arch/powerpc/kernel/ppc970-pmu.c @@ -19,6 +19,8 @@ #define PM_PMC_MSK 0xf #define PM_UNIT_SH 8 /* TTMMUX number and setting - unit select */ #define PM_UNIT_MSK 0xf +#define PM_SPCSEL_SH 6 +#define PM_SPCSEL_MSK 3 #define PM_BYTE_SH 4 /* Byte number of event bus to use */ #define PM_BYTE_MSK 3 #define PM_PMCSEL_MSK 0xf @@ -88,8 +90,11 @@ static short mmcr1_adder_bits[8] = { * Layout of constraint bits: * 6666555555555544444444443333333333222222222211111111110000000000 * 3210987654321098765432109876543210987654321098765432109876543210 - * <><>[ >[ >[ >< >< >< >< ><><><><><><><><> - * T0T1 UC PS1 PS2 B0 B1 B2 B3 P1P2P3P4P5P6P7P8 + * <><><>[ >[ >[ >< >< >< >< ><><><><><><><><> + * SPT0T1 UC PS1 PS2 B0 B1 B2 B3 P1P2P3P4P5P6P7P8 + * + * SP - SPCSEL constraint + * 48-49: SPCSEL value 0x3_0000_0000_0000 * * T0 - TTM0 constraint * 46-47: TTM0SEL value (0=FPU, 2=IFU, 3=VPU) 0xC000_0000_0000 @@ -126,6 +131,57 @@ static short mmcr1_adder_bits[8] = { * 0-13: Count of events needing PMC2..PMC8 */ +static unsigned char direct_marked_event[8] = { + (1<<2) | (1<<3), /* PMC1: PM_MRK_GRP_DISP, PM_MRK_ST_CMPL */ + (1<<3) | (1<<5), /* PMC2: PM_THRESH_TIMEO, PM_MRK_BRU_FIN */ + (1<<3) | (1<<5), /* PMC3: PM_MRK_ST_CMPL_INT, PM_MRK_VMX_FIN */ + (1<<4) | (1<<5), /* PMC4: PM_MRK_GRP_CMPL, PM_MRK_CRU_FIN */ + (1<<4) | (1<<5), /* PMC5: PM_GRP_MRK, PM_MRK_GRP_TIMEO */ + (1<<3) | (1<<4) | (1<<5), + /* PMC6: PM_MRK_ST_STS, PM_MRK_FXU_FIN, PM_MRK_GRP_ISSUED */ + (1<<4) | (1<<5), /* PMC7: PM_MRK_FPU_FIN, PM_MRK_INST_FIN */ + (1<<4) /* PMC8: PM_MRK_LSU_FIN */ +}; + +/* + * Returns 1 if event counts things relating to marked instructions + * and thus needs the MMCRA_SAMPLE_ENABLE bit set, or 0 if not. + */ +static int p970_marked_instr_event(unsigned int event) +{ + int pmc, psel, unit, byte, bit; + unsigned int mask; + + pmc = (event >> PM_PMC_SH) & PM_PMC_MSK; + psel = event & PM_PMCSEL_MSK; + if (pmc) { + if (direct_marked_event[pmc - 1] & (1 << psel)) + return 1; + if (psel == 0) /* add events */ + bit = (pmc <= 4)? pmc - 1: 8 - pmc; + else if (psel == 7 || psel == 13) /* decode events */ + bit = 4; + else + return 0; + } else + bit = psel; + + byte = (event >> PM_BYTE_SH) & PM_BYTE_MSK; + unit = (event >> PM_UNIT_SH) & PM_UNIT_MSK; + mask = 0; + switch (unit) { + case PM_VPU: + mask = 0x4c; /* byte 0 bits 2,3,6 */ + case PM_LSU0: + /* byte 2 bits 0,2,3,4,6; all of byte 1 */ + mask = 0x085dff00; + case PM_LSU1L: + mask = 0x50 << 24; /* byte 3 bits 4,6 */ + break; + } + return (mask >> (byte * 8 + bit)) & 1; +} + /* Masks and values for using events from the various units */ static u64 unit_cons[PM_LASTUNIT+1][2] = { [PM_FPU] = { 0xc80000000000ull, 0x040000000000ull }, @@ -138,7 +194,7 @@ static u64 unit_cons[PM_LASTUNIT+1][2] = { static int p970_get_constraint(unsigned int event, u64 *maskp, u64 *valp) { - int pmc, byte, unit, sh; + int pmc, byte, unit, sh, spcsel; u64 mask = 0, value = 0; int grp = -1; @@ -177,6 +233,11 @@ static int p970_get_constraint(unsigned int event, u64 *maskp, u64 *valp) mask |= 0x800000000ull; value |= 0x100000000ull; } + spcsel = (event >> PM_SPCSEL_SH) & PM_SPCSEL_MSK; + if (spcsel) { + mask |= 3ull << 48; + value |= (u64)spcsel << 48; + } *maskp = mask; *valp = value; return 0; @@ -209,6 +270,7 @@ static int p970_compute_mmcr(unsigned int event[], int n_ev, unsigned char ttmuse[2]; unsigned char pmcsel[8]; int i; + int spcsel; if (n_ev > 8) return -1; @@ -316,6 +378,10 @@ static int p970_compute_mmcr(unsigned int event[], int n_ev, } pmcsel[pmc] = psel; hwc[i] = pmc; + spcsel = (event[i] >> PM_SPCSEL_SH) & PM_SPCSEL_MSK; + mmcr1 |= spcsel; + if (p970_marked_instr_event(event[i])) + mmcra |= MMCRA_SAMPLE_ENABLE; } for (pmc = 0; pmc < 2; ++pmc) mmcr0 |= pmcsel[pmc] << (MMCR0_PMC1SEL_SH - 7 * pmc); |