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| author | David E. Box <david.e.box@linux.intel.com> | 2023-11-30 01:21:22 +0300 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2023-12-04 16:53:43 +0300 |
| commit | 416eeb2e1fc7b60ab0c7ced26ab966dd7733357d (patch) | |
| tree | 9e4b2f3266b94d3e53978815b372188c25bfb0f9 /drivers/platform/x86/intel/pmt/class.c | |
| parent | 4d1b7efee3fc703c64bacc37c4824888c5f26e8b (diff) | |
| download | linux-416eeb2e1fc7b60ab0c7ced26ab966dd7733357d.tar.xz | |
platform/x86/intel/pmt: telemetry: Export API to read telemetry
Export symbols to allow access to Intel PMT Telemetry data on available
devices. Provides APIs to search, register, and read telemetry using a
kref managed pointer that serves as a handle to a telemetry endpoint.
To simplify searching for present devices, have the IDA start at 1
instead of 0 so that 0 can be used to indicate end of search.
Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20231129222132.2331261-11-david.e.box@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'drivers/platform/x86/intel/pmt/class.c')
| -rw-r--r-- | drivers/platform/x86/intel/pmt/class.c | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/drivers/platform/x86/intel/pmt/class.c b/drivers/platform/x86/intel/pmt/class.c index 142a24e3727d..4b53940a64e2 100644 --- a/drivers/platform/x86/intel/pmt/class.c +++ b/drivers/platform/x86/intel/pmt/class.c @@ -17,7 +17,7 @@ #include "../vsec.h" #include "class.h" -#define PMT_XA_START 0 +#define PMT_XA_START 1 #define PMT_XA_MAX INT_MAX #define PMT_XA_LIMIT XA_LIMIT(PMT_XA_START, PMT_XA_MAX) #define GUID_SPR_PUNIT 0x9956f43f @@ -247,6 +247,7 @@ static int intel_pmt_dev_register(struct intel_pmt_entry *entry, struct intel_pmt_namespace *ns, struct device *parent) { + struct intel_vsec_device *ivdev = dev_to_ivdev(parent); struct resource res = {0}; struct device *dev; int ret; @@ -270,7 +271,7 @@ static int intel_pmt_dev_register(struct intel_pmt_entry *entry, if (ns->attr_grp) { ret = sysfs_create_group(entry->kobj, ns->attr_grp); if (ret) - goto fail_sysfs; + goto fail_sysfs_create_group; } /* if size is 0 assume no data buffer, so no file needed */ @@ -295,13 +296,23 @@ static int intel_pmt_dev_register(struct intel_pmt_entry *entry, entry->pmt_bin_attr.size = entry->size; ret = sysfs_create_bin_file(&dev->kobj, &entry->pmt_bin_attr); - if (!ret) - return 0; + if (ret) + goto fail_ioremap; + + if (ns->pmt_add_endpoint) { + ret = ns->pmt_add_endpoint(entry, ivdev->pcidev); + if (ret) + goto fail_add_endpoint; + } + + return 0; +fail_add_endpoint: + sysfs_remove_bin_file(entry->kobj, &entry->pmt_bin_attr); fail_ioremap: if (ns->attr_grp) sysfs_remove_group(entry->kobj, ns->attr_grp); -fail_sysfs: +fail_sysfs_create_group: device_unregister(dev); fail_dev_create: xa_erase(ns->xa, entry->devid); |