lkml.org 
[lkml]   [2023]   [Oct]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH V4 17/17] platform/x86/intel/pmc: Show Die C6 counter on Meteor Lake
    Date
    Expose the Die C6 counter on Meteor Lake.

    Signed-off-by: David E. Box <david.e.box@linux.intel.com>
    ---
    V4 - no change

    V3 - Split PATCH V2 13. Separates implementation (previous patch)
    from platform specific use (this patch)

    drivers/platform/x86/intel/pmc/mtl.c | 32 ++++++++++++++++++++++++++++
    1 file changed, 32 insertions(+)

    diff --git a/drivers/platform/x86/intel/pmc/mtl.c b/drivers/platform/x86/intel/pmc/mtl.c
    index 7ceeae507f4c..38c2f946ec23 100644
    --- a/drivers/platform/x86/intel/pmc/mtl.c
    +++ b/drivers/platform/x86/intel/pmc/mtl.c
    @@ -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.
    --
    2.34.1
    \
     
     \ /
      Last update: 2023-10-19 01:18    [W:3.235 / U:0.012 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site