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platform/x86/intel/pmt: telemetry: Fix fixed region handling

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Use the telem_type and the fixed block guid to determine if an entry is a
fixed region. For certain platforms we don't support this.

Cc: Srinivas Pandruvada <srinivas.pandruvada@intel.com>
Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Signed-off-by: Gayatri Kammela <gayatri.kammela@linux.intel.com>
Link: https://lore.kernel.org/r/20220629221334.434307-4-gayatri.kammela@linux.intel.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
David E. Box 2022-06-29 15:13:33 -07:00 • committed by Hans de Goede
parent 99de05043e
commit ba7e421eee
1 changed files with 15 additions and 3 deletions
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18
drivers/platform/x86/intel/pmt/telemetry.c
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@ -23,12 +23,19 @@
#define TELEM_GUID_OFFSET 0x4
#define TELEM_BASE_OFFSET 0x8
#define TELEM_ACCESS(v) ((v) & GENMASK(3, 0))
#define TELEM_TYPE(v) (((v) & GENMASK(7, 4)) >> 4)
/* size is in bytes */
#define TELEM_SIZE(v) (((v) & GENMASK(27, 12)) >> 10)
/* Used by client hardware to identify a fixed telemetry entry*/
#define TELEM_CLIENT_FIXED_BLOCK_GUID 0x10000000
enum telem_type {
TELEM_TYPE_PUNIT = 0,
TELEM_TYPE_CRASHLOG,
TELEM_TYPE_PUNIT_FIXED,
};
struct pmt_telem_priv {
int num_entries;
struct intel_pmt_entry entry[];
@ -39,10 +46,15 @@ static bool pmt_telem_region_overlaps(struct intel_pmt_entry *entry,
{
u32 guid = readl(entry->disc_table + TELEM_GUID_OFFSET);
if (guid != TELEM_CLIENT_FIXED_BLOCK_GUID)
return false;
if (intel_pmt_is_early_client_hw(dev)) {
u32 type = TELEM_TYPE(readl(entry->disc_table));
return intel_pmt_is_early_client_hw(dev);
if ((type == TELEM_TYPE_PUNIT_FIXED) ||
(guid == TELEM_CLIENT_FIXED_BLOCK_GUID))
return true;
}
return false;
}
static int pmt_telem_header_decode(struct intel_pmt_entry *entry,