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| author | Karthik Poosa <karthik.poosa@intel.com> | 2026-07-02 14:55:39 +0530 |
|---|---|---|
| committer | Matt Roper <matthew.d.roper@intel.com> | 2026-07-06 08:55:48 -0700 |
| commit | f7c05238ab72ae72b5f6bd5516b02e7a24fdfd0d (patch) | |
| tree | 6dc39bb7b8473355f03a508071accfe5f8efb996 | |
| parent | 3a8bfa1f2af71ca21818253753fccc53337b7b9b (diff) | |
| download | linux-f7c05238ab72ae72b5f6bd5516b02e7a24fdfd0d.tar.gz linux-f7c05238ab72ae72b5f6bd5516b02e7a24fdfd0d.zip | |
drm/xe/pcode: Add support to get pcode version from PMT
Add api get_pcode_version() to read pcode version from PMT telemetry.
Add PUNIT_VERSION telemetry offset in xe_pmt.h.
Signed-off-by: Karthik Poosa <karthik.poosa@intel.com>
Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Link: https://patch.msgid.link/20260702092540.1005095-2-karthik.poosa@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
| -rw-r--r-- | drivers/gpu/drm/xe/regs/xe_pmt.h | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/xe/xe_pcode.c | 32 | ||||
| -rw-r--r-- | drivers/gpu/drm/xe/xe_pcode.h | 7 |
3 files changed, 41 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/regs/xe_pmt.h b/drivers/gpu/drm/xe/regs/xe_pmt.h index 240d57993ea6..a62ab05c6b4c 100644 --- a/drivers/gpu/drm/xe/regs/xe_pmt.h +++ b/drivers/gpu/drm/xe/regs/xe_pmt.h @@ -15,6 +15,8 @@ #define ENERGY_PKG REG_GENMASK64(31, 0) #define ENERGY_CARD REG_GENMASK64(63, 32) +#define PUNIT_VERSION_OFFSET 0xA0 + #define BMG_TELEMETRY_BASE_OFFSET 0xE0000 #define BMG_TELEMETRY_OFFSET (SOC_BASE + BMG_TELEMETRY_BASE_OFFSET) diff --git a/drivers/gpu/drm/xe/xe_pcode.c b/drivers/gpu/drm/xe/xe_pcode.c index 866986694d9c..ccc3bdeed6bb 100644 --- a/drivers/gpu/drm/xe/xe_pcode.c +++ b/drivers/gpu/drm/xe/xe_pcode.c @@ -11,10 +11,14 @@ #include <drm/drm_managed.h> +#include "regs/xe_pmt.h" #include "xe_assert.h" #include "xe_device.h" #include "xe_mmio.h" #include "xe_pcode_api.h" +#include "xe_pm.h" +#include "xe_printk.h" +#include "xe_vsec.h" /** * DOC: PCODE @@ -350,3 +354,31 @@ int xe_pcode_probe_early(struct xe_device *xe) return xe_pcode_ready(xe, false); } ALLOW_ERROR_INJECTION(xe_pcode_probe_early, ERRNO); /* See xe_pci_probe */ + +/** + * xe_get_pcode_version - Read pcode version via PMT telemetry + * @xe: xe instance + * @version: pointer to struct xe_pcode_version to store version info + * + * Reads the pcode version from PMT telemetry and fills the + * provided @version structure. + * + * Return: 0 on success, negative error code on failure. + */ +int xe_get_pcode_version(struct xe_device *xe, struct xe_pcode_version *version) +{ + int ret = 0; + + guard(xe_pm_runtime)(xe); + + ret = xe_pmt_telem_read(xe->drm.dev, + xe_mmio_read32(xe_root_tile_mmio(xe), PUNIT_TELEMETRY_GUID), + (u64 *)version, PUNIT_VERSION_OFFSET, sizeof(*version)); + if (ret != sizeof(*version)) { + xe_warn(xe, "pcode version read from PMT failed, ret %pe\n", ERR_PTR(ret)); + return ret; + } + xe_dbg(xe, "pcode version major %u minor %u engg %u\n", version->major, + version->minor, version->engg); + return 0; +} diff --git a/drivers/gpu/drm/xe/xe_pcode.h b/drivers/gpu/drm/xe/xe_pcode.h index 18260c29e620..8fb3e4ba13a6 100644 --- a/drivers/gpu/drm/xe/xe_pcode.h +++ b/drivers/gpu/drm/xe/xe_pcode.h @@ -12,6 +12,12 @@ struct drm_device; struct xe_device; struct xe_tile; +struct xe_pcode_version { + u16 minor; + u16 major; + u32 engg; +}; + int xe_pcode_init_early(struct xe_tile *tile); int xe_pcode_probe_early(struct xe_device *xe); int xe_pcode_ready(struct xe_device *xe, bool locked); @@ -22,6 +28,7 @@ int xe_pcode_write_timeout(struct xe_tile *tile, u32 mbox, u32 val, int timeout_ms); int xe_pcode_write64_timeout(struct xe_tile *tile, u32 mbox, u32 data0, u32 data1, int timeout); +int xe_get_pcode_version(struct xe_device *xe, struct xe_pcode_version *version); #define xe_pcode_write(tile, mbox, val) \ xe_pcode_write_timeout(tile, mbox, val, 1) |