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* [PATCH v9 00/14] drm/xe/hwmon: Update hwmon thermal mailbox
@ 2026-10-09 12:03 Karthik Poosa
  2026-10-09 12:03 ` [PATCH v9 01/14] drm/xe/hwmon: Handle pcode read failures of xe_hwmon_pcode_rmw_power_limit Karthik Poosa
                   ` (15 more replies)
  0 siblings, 16 replies; 26+ messages in thread
From: Karthik Poosa @ 2026-10-09 12:03 UTC (permalink / raw)
  To: intel-xe
  Cc: rodrigo.vivi, anshuman.gupta, badal.nilawar, raag.jadav,
	riana.tauro, sk.anirban, mallesh.koujalagi, soham.purkait,
	Karthik Poosa

This series adds CRI-specific temperature sensor handling to the Xe
hwmon implementation and fixes couple of hwmon issues.

CRI platforms may report unavailable temperature sensors and support
a variable number of VRAM temperature channels depending on platform
configuration. This series adds the required sensor presence checks and
uses platform-reported thermal configuration data to expose only valid
temperature-related hwmon attributes.

The series also corrects the telemetry group selection used for memory
controller temperature reporting.

v2:
 - Address review comments from Sashiko, Badal and Raag.
 - Enable IEEE 754 temperature decoding for MMIO temperature registers.
  - Split sensor validity check into mailbox vs MMIO handling; add
    is_temp_available() / is_temp_is_visible().
 - Temporarily disable memory controller and PCIe temperatures on CRI.

v3:
  - Detect unavailable temperature sensors: rephrase a debug log.
  - Decode mailbox temperatures as 8-bit sign-magnitude values instead of
    s8.
  - Use VRAM temperature sensor count from thermal config on CRI: address
    review comments from sashiko-bot@kernel.org and Rodrigo.
  - Decode CRI temperature registers as IEEE-754: reject temperatures that
    overflow long on 32-bit systems.

v4:
  - Address review comments and issues report from Rodrigo and
    sashiko-bot@kernel.org.
  - Decode mailbox temperatures as 8-bit sign-magnitude values.
  - Cache sensor availability during registration.
  - Enable memory controller and pcie sensors for CRI.
  - Derive the VRAM channel count from the CRI MSU enable mask.
  - Use CRI-specific package and VRAM temperature registers.
  - Handle the CRI memory controller and pcie sensor offsets as per CRI.

v5:
 - Remove the unintended IGT prefix from the patch titles.

v6:
 - Address issues reported by sashiko-bot@kernel.org.
 - Add VRAM individual channel CRI_VRAM_TEMPERATURE_N register for CRI.

v7:
 - Address review comments from Rodrigo.
    - Use ret instead of count in patch 1.
    - Return true for platforms without temperature sentinels support.
    - Rename has_mbx_temp_sentinel to has_temp_sentinel.
    - Add a info flag for pcie sensor offset.
    - Simplify temperature channels config.

v8:
 - Address review comment from Sashiko.
 - Revert the unconditional validation of temperature readings on
   non-sentinel platforms.
   This avoids creating spurious VRAM temperature channels when the
   corresponding sensors are unavailable.

v9:
 - Address review comment from Rodrigo.
 - Use helper for pcie sensor offset instead of info field.

Karthik Poosa (14):
  drm/xe/hwmon: Handle pcode read failures of
    xe_hwmon_pcode_rmw_power_limit
  drm/xe/hwmon: Decode mailbox temperature as sign-magnitude
  drm/xe/hwmon: Fix memory controller thermal data handling
  drm/xe/hwmon: Add helpers to validate thermal sensor readings
  drm/xe/hwmon: Handle unavailable memory controller sensors
  drm/xe/hwmon: Detect unavailable PCIe thermal sensors
  drm/xe/hwmon: Consolidate temperature sensor availability checks
  drm/xe/hwmon: Cache temperature availability to reduce probe time
  drm/xe/hwmon: use CRI-specific package and VRAM temperature registers
  drm/xe/hwmon: Add platform-aware VRAM thermal channel support
  drm/xe/hwmon: Decode CRI temperature registers as IEEE-754
  drm/xe/hwmon: Update memory controller temperature offset for CRI
  drm/xe/hwmon: add PCIe temperature support for CRI
  drm/xe/hwmon: Simplify temperature channels config

 drivers/gpu/drm/xe/regs/xe_pcode_regs.h |   4 +
 drivers/gpu/drm/xe/xe_device_types.h    |   4 +
 drivers/gpu/drm/xe/xe_hwmon.c           | 450 ++++++++++++++++++------
 drivers/gpu/drm/xe/xe_pci.c             |   4 +
 drivers/gpu/drm/xe/xe_pci_types.h       |   2 +
 drivers/gpu/drm/xe/xe_pcode_api.h       |   2 -
 6 files changed, 366 insertions(+), 100 deletions(-)

-- 
2.25.1


^ permalink raw reply	[flat|nested] 26+ messages in thread

end of thread, other threads:[~2026-10-12 13:10 UTC | newest]

Thread overview: 26+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2026-10-09 12:03 [PATCH v9 00/14] drm/xe/hwmon: Update hwmon thermal mailbox Karthik Poosa
2026-10-09 12:03 ` [PATCH v9 01/14] drm/xe/hwmon: Handle pcode read failures of xe_hwmon_pcode_rmw_power_limit Karthik Poosa
2026-10-09 12:14   ` sashiko-bot
2026-10-10  5:14     ` Poosa, Karthik
2026-10-12 11:09       ` Poosa, Karthik
2026-10-09 12:03 ` [PATCH v9 02/14] drm/xe/hwmon: Decode mailbox temperature as sign-magnitude Karthik Poosa
2026-10-09 12:03 ` [PATCH v9 03/14] drm/xe/hwmon: Fix memory controller thermal data handling Karthik Poosa
2026-10-09 12:15   ` sashiko-bot
2026-10-09 12:03 ` [PATCH v9 04/14] drm/xe/hwmon: Add helpers to validate thermal sensor readings Karthik Poosa
2026-10-09 12:03 ` [PATCH v9 05/14] drm/xe/hwmon: Handle unavailable memory controller sensors Karthik Poosa
2026-10-09 12:03 ` [PATCH v9 06/14] drm/xe/hwmon: Detect unavailable PCIe thermal sensors Karthik Poosa
2026-10-09 12:03 ` [PATCH v9 07/14] drm/xe/hwmon: Consolidate temperature sensor availability checks Karthik Poosa
2026-10-09 12:16   ` sashiko-bot
2026-10-10  5:19     ` Poosa, Karthik
2026-10-12 13:10       ` Poosa, Karthik
2026-10-09 12:03 ` [PATCH v9 08/14] drm/xe/hwmon: Cache temperature availability to reduce probe time Karthik Poosa
2026-10-09 12:03 ` [PATCH v9 09/14] drm/xe/hwmon: use CRI-specific package and VRAM temperature registers Karthik Poosa
2026-10-09 12:03 ` [PATCH v9 10/14] drm/xe/hwmon: Add platform-aware VRAM thermal channel support Karthik Poosa
2026-10-09 12:18   ` sashiko-bot
2026-10-10  5:39     ` Poosa, Karthik
2026-10-09 12:03 ` [PATCH v9 11/14] drm/xe/hwmon: Decode CRI temperature registers as IEEE-754 Karthik Poosa
2026-10-09 12:03 ` [PATCH v9 12/14] drm/xe/hwmon: Update memory controller temperature offset for CRI Karthik Poosa
2026-10-09 12:03 ` [PATCH v9 13/14] drm/xe/hwmon: add PCIe temperature support " Karthik Poosa
2026-10-09 12:03 ` [PATCH v9 14/14] drm/xe/hwmon: Simplify temperature channels config Karthik Poosa
2026-10-09 12:17 ` ✓ CI.KUnit: success for drm/xe/hwmon: Update hwmon thermal mailbox (rev6) Patchwork
2026-10-09 13:42 ` ✓ Xe.CI.BAT: " Patchwork

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