Commit 388d7617 authored by Kan Liang's avatar Kan Liang Committed by Peter Zijlstra
Browse files

perf/x86/intel/uncore: Support IIO free-running counters on GNR 



The free-running counters for IIO uncore blocks on Granite Rapids are
similar to Sapphire Rapids. The key difference is the offset of the
registers. The number of the IIO uncore blocks can also be retrieved
from the discovery table.

Signed-off-by: default avatarKan Liang <kan.liang@linux.intel.com>
Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: default avatarAmmy Yi <ammy.yi@intel.com>
Link: https://lore.kernel.org/r/20231117163939.2468007-4-kan.liang@linux.intel.com
parent 632c4bf6

arch/x86/events/intel/uncore_snbep.c

+11 −1
Original line number Diff line number Diff line
@@ -6648,11 +6648,21 @@ static struct intel_uncore_type *gnr_uncores[UNCORE_GNR_NUM_UNCORE_TYPES] = { 
	NULL,

};



static struct freerunning_counters gnr_iio_freerunning[] = {

	[SPR_IIO_MSR_IOCLK]	= { 0x290e, 0x01, 0x10, 1, 48 },

	[SPR_IIO_MSR_BW_IN]	= { 0x360e, 0x10, 0x80, 8, 48 },

	[SPR_IIO_MSR_BW_OUT]	= { 0x2e0e, 0x10, 0x80, 8, 48 },

};



void gnr_uncore_cpu_init(void)

{

	uncore_msr_uncores = uncore_get_uncores(UNCORE_ACCESS_MSR, 0, NULL,

	uncore_msr_uncores = uncore_get_uncores(UNCORE_ACCESS_MSR,

						UNCORE_SPR_MSR_EXTRA_UNCORES,

						spr_msr_uncores,

						UNCORE_GNR_NUM_UNCORE_TYPES,

						gnr_uncores);

	spr_uncore_iio_free_running.num_boxes = uncore_type_max_boxes(uncore_msr_uncores, UNCORE_SPR_IIO);

	spr_uncore_iio_free_running.freerunning = gnr_iio_freerunning;

}



int gnr_uncore_pci_init(void)