Commit 6e796485 authored by David E. Box's avatar David E. Box Committed by Hans de Goede
Browse files

platform/x86/intel/pmc: Show Die C6 counter on Meteor Lake 



Expose the Die C6 counter on Meteor Lake.

Signed-off-by: default avatarDavid E. Box <david.e.box@linux.intel.com>
Reviewed-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20231129222132.2331261-21-david.e.box@linux.intel.com


Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
parent 3621df43

drivers/platform/x86/intel/pmc/mtl.c

+32 −0
Original line number Diff line number Diff line
@@ -10,12 +10,17 @@ 


#include <linux/pci.h>

#include "core.h"

#include "../pmt/telemetry.h"



/* PMC SSRAM PMT Telemetry GUIDS */

#define SOCP_LPM_REQ_GUID	0x2625030

#define IOEM_LPM_REQ_GUID	0x4357464

#define IOEP_LPM_REQ_GUID	0x5077612



/* Die C6 from PUNIT telemetry */

#define MTL_PMT_DMU_DIE_C6_OFFSET	15

#define MTL_PMT_DMU_GUID		0x1A067102



static const u8 MTL_LPM_REG_INDEX[] = {0, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14, 15, 16, 20};



/*
@@ -968,6 +973,32 @@ static struct pmc_info mtl_pmc_info_list[] = { 
	{}

};



static void mtl_punit_pmt_init(struct pmc_dev *pmcdev)

{

	struct telem_endpoint *ep;

	struct pci_dev *pcidev;



	pcidev = pci_get_domain_bus_and_slot(0, 0, PCI_DEVFN(10, 0));

	if (!pcidev) {

		dev_err(&pmcdev->pdev->dev, "PUNIT PMT device not found.\n");

		return;

	}



	ep = pmt_telem_find_and_register_endpoint(pcidev, MTL_PMT_DMU_GUID, 0);

	if (IS_ERR(ep)) {

		dev_err(&pmcdev->pdev->dev,

			"pmc_core: couldn't get DMU telem endpoint, %ld\n",

			PTR_ERR(ep));

		return;

	}



	pci_dev_put(pcidev);

	pmcdev->punit_ep = ep;



	pmcdev->has_die_c6 = true;

	pmcdev->die_c6_offset = MTL_PMT_DMU_DIE_C6_OFFSET;

}



#define MTL_GNA_PCI_DEV	0x7e4c

#define MTL_IPU_PCI_DEV	0x7d19

#define MTL_VPU_PCI_DEV	0x7d1d
@@ -1032,6 +1063,7 @@ int mtl_core_init(struct pmc_dev *pmcdev) 
	}



	pmc_core_get_low_power_modes(pmcdev);

	mtl_punit_pmt_init(pmcdev);



	/* Due to a hardware limitation, the GBE LTR blocks PC10

	 * when a cable is attached. Tell the PMC to ignore it.