Merge tag 'drm-xe-next-2024-02-25' of ssh://gitlab.freedesktop.org/dr…

…m/xe/kernel into drm-next

drm/xe feature pull for v6.9:

UAPI Changes:

- New query to the GuC firmware submission version. (José Roberto de Souza)
- Remove unused persistent exec_queues (Thomas Hellström)
- Add vram frequency sysfs attributes (Sujaritha Sundaresan, Rodrigo Vivi)
- Add the flag XE_VM_BIND_FLAG_DUMPABLE to notify devcoredump that mapping
  should be dumped (Maarten Lankhorst)

Cross-drivers Changes:

- Make sure intel_wakeref_t is treated as opaque type on i915-display
  and fix its type on xe

Driver Changes:

- Drop pre-production workarounds (Matt Roper)
- Drop kunit tests for unsuported platforms: PVC and pre-production DG2 (Lucas De Marchi)
- Start pumbling SR-IOV support with memory based interrupts
  for VF (Michal Wajdeczko)
- Allow to map BO in GGTT with PAT index corresponding to
  XE_CACHE_UC to work with memory based interrupts (Michal Wajdeczko)
- Improve logging with GT-oriented drm_printers (Michal Wajdeczko)
- Add GuC Doorbells Manager as prep work SR-IOV during
  VF provisioning ((Michal Wajdeczko)
- Refactor fake device handling in kunit integration ((Michal Wajdeczko)
- Implement additional workarounds for xe2 and MTL (Tejas Upadhyay,
  Lucas De Marchi, Shekhar Chauhan, Karthik Poosa)
- Program a few registers according to perfomance guide spec for Xe2 (Shekhar Chauhan)
- Add error handling for non-blocking communication with GuC (Daniele Ceraolo Spurio)
- Fix remaining 32b build issues and enable it back (Lucas De  Marchi)
- Fix build with CONFIG_DEBUG_FS=n (Jani Nikula)
- Fix warnings from GuC ABI headers (Matthew Brost)
- Introduce Relay Communication for SR-IOV for VF <-> GuC <-> PF (Michal Wajdeczko)
- Add mocs reset kunit (Ruthuvikas Ravikumar)
- Fix spellings (Colin Ian King)
- Disable mid-thread preemption when not properly supported by hardware (Nirmoy Das)
- Release mmap mappings on rpm suspend (Badal Nilawar)
- Fix BUG_ON on xe_exec by moving fence reservation to the validate stage (Matthew Auld)
- Fix xe_exec by reserving extra fence slot for CPU bind (Matthew Brost)
- Fix xe_exec with full long running exec queue, now returning
  -EWOULDBLOCK to userspace (Matthew Brost)
- Fix CT irq handler when CT is disabled (Matthew Brost)
- Fix VM_BIND_OP_UNMAP_ALL without any bound vmas (Thomas Hellström)
- Fix missing __iomem annotations (Thomas Hellström)
- Fix exec queue priority handling with GuC (Brian Welty)
- Fix setting SLPC flag to GuC when it's not supported (Vinay Belgaumkar)
- Fix C6 disabling without SLPC (Matt Roper)
- Drop -Wstringop-overflow to fix build with GCC11 (Paul E. McKenney)
- Circumvent bogus -Wstringop-overflow in one case (Arnd Bergmann)
- Refactor exec_queue user extensions handling and fix USM attributes
  being applied too late (Brian Welty)
- Use circ_buf head/tail convention (Matthew Brost)
- Fail build if circ_buf-related defines are modified with incompatible values
  (Matthew Brost)
- Fix several error paths (Dan Carpenter)
- Fix CCS copy for small VRAM copy chunks (Thomas Hellström)
- Rework driver initialization order and paths to account for driver running
  in VF mode (Michal Wajdeczko)
- Initialize GuC earlier during probe to handle driver in VF mode (Michał Winiarski)
- Fix migration use of MI_STORE_DATA_IMM to write PTEs (Matt Roper)
- Fix bounds checking in __xe_bo_placement_for_flags (Brian Welty)
- Drop display dependency on CONFIG_EXPERT (Jani Nikula)
- Do not hand-roll kstrdup when creating snapshot (Michal Wajdeczko)
- Stop creating one kunit module per kunit suite (Lucas De Marchi)
- Reduce scope and constify variables (Thomas Hellström, Jani Nikula, Michal Wajdeczko)
- Improve and document xe_guc_ct_send_recv() (Michal Wajdeczko)
- Add proxy communication between CSME and GSC uC (Daniele Ceraolo Spurio)
- Fix size calculation when writing pgtable (Fei Yang)
- Make sure cfb is page size aligned in stolen memory (Vinod Govindapillai)
- Stop printing guc log to dmesg when waiting for GuC fails (Rodrigo Vivi)
- Use XE_CACHE_WB instead of XE_CACHE_NONE for cpu coherency on migration
  (Himal Prasad Ghimiray)
- Fix error path in xe_vm_create (Moti Haimovski)
- Fix warnings in doc generation (Thomas Hellström, Badal Nilawar)
- Improve devcoredump content for mesa debugging (José Roberto de Souza)
- Fix crash in trace_dma_fence_init() (José Roberto de Souza)
- Improve CT state change handling (Matthew Brost)
- Toggle USM support for Xe2 (Lucas De Marchi)
- Reduces code duplication to emit PIPE_CONTROL (José Roberto de Souza)
- Canonicalize addresses where needed for Xe2 and add to devcoredump
  (José Roberto de Souza)
- Only allow 1 ufence per exec / bind IOCTL (Matthew Brost)
- Move all display code to display/ (Jani Nikula)
- Fix sparse warnings by correctly using annotations (Thomas Hellström)
- Warn on job timeouts instead of using asserts (Matt Roper)
- Prefix macros to avoid clashes with sparc (Matthew Brost)
- Fix -Walloc-size by subclassing instead of allocating size smaller than struct (Thomas Hellström)
- Add status check during gsc header readout (Suraj Kandpal)
- Fix infinite loop in vm_bind_ioctl_ops_unwind() (Matthew Brost)
- Fix fence refcounting (Matthew Brost)
- Fix picking incorrect userptr VMA (Matthew Brost)
- Fix USM on integrated by mapping both mem.kernel_bb_pool and usm.bb_pool (Matthew Brost)
- Fix double initialization of display power domains (Xiaoming Wang)
- Check expected uC versions by major.minor.patch instead of just major.minor (John Harrison)
- Bump minimum GuC version to 70.19.2 for all platforms under force-probe
  (John Harrison)
- Add GuC firmware loading for Lunar Lake (John Harrison)
- Use kzalloc() instead of hand-rolled alloc + memset (Nirmoy Das)
- Fix max page size of VMA during a REMAP (Matthew Brost)
- Don't ignore error when pinning pages in kthread (Matthew Auld)
- Refactor xe hwmon (Karthik Poosa)
- Add debug logs for D3cold (Riana Tauro)
- Remove broken TEST_VM_ASYNC_OPS_ERROR (Matthew Brost)
- Always allow to override firmware blob with module param and improve
  log when no firmware is found (Lucas De Marchi)
- Fix shift-out-of-bounds due to xe_vm_prepare_vma() accepting zero fences (Thomas Hellström)
- Fix shift-out-of-bounds by distinguishing xe_pt/xe_pt_dir subclass (Thomas Hellström)
- Fail driver bind if platform supports MSIX, but fails to allocate all of them (Dani Liberman)
- Fix intel_fbdev thinking memory is backed by shmem (Matthew Auld)
- Prefer drm_dbg() over dev_dbg() (Jani Nikula)
- Avoid function cast warnings with clang-16 (Arnd Bergmann)
- Enhance xe_bo_move trace (Priyanka Dandamudi)
- Fix xe_vma_set_pte_size() not setting the right gpuva.flags for 4K size (Matthew Brost)
- Add XE_VMA_PTE_64K VMA flag (Matthew Brost)
- Return 2MB page size for compact 64k PTEs (Matthew Brost)
- Remove usage of the deprecated ida_simple_xx() API (Christophe JAILLET)
- Fix modpost warning on xe_mocs live kunit module (Ashutosh Dixit)
- Drop extra newline in from sysfs files (Ashutosh Dixit)
- Implement VM snapshot support for BO's and userptr (Maarten Lankhorst)
- Add debug logs when skipping rebinds (Matthew Brost)
- Fix code generation when mixing build directories (Dafna Hirschfeld)
- Prefer struct_size over open coded arithmetic (Erick Archer)

Signed-off-by: Daniel Vetter <[email protected]>
From: Lucas De Marchi <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/dbdkrwmcoqqlwftuc3olbauazc3pbamj26wa34puztowsnauoh@i3zms7ut4yuw

drivers/gpu/drm/xe/.kunitconfig

@@ -11,3 +11,8 @@ CONFIG_DRM_XE_DISPLAY=n
 CONFIG_EXPERT=y
 CONFIG_FB=y
 CONFIG_DRM_XE_KUNIT_TEST=y
+CONFIG_LOCK_DEBUGGING_SUPPORT=y
+CONFIG_PROVE_LOCKING=y
+CONFIG_DEBUG_MUTEXES=y
+CONFIG_LOCKDEP=y
+CONFIG_DEBUG_LOCKDEP=y

drivers/gpu/drm/xe/Kconfig

@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0-only
 config DRM_XE
 	tristate "Intel Xe Graphics"
-	depends on DRM && PCI && MMU && (m || (y && KUNIT=y)) && 64BIT
+	depends on DRM && PCI && MMU && (m || (y && KUNIT=y))
 	select INTERVAL_TREE
 	# we need shmfs for the swappable backing store, and in particular
 	# the shmem_readpage() which depends upon tmpfs

drivers/gpu/drm/xe/Makefile

@@ -76,6 +76,7 @@ xe-y += xe_bb.o \
 	xe_ggtt.o \
 	xe_gpu_scheduler.o \
 	xe_gsc.o \
+	xe_gsc_proxy.o \
 	xe_gsc_submit.o \
 	xe_gt.o \
 	xe_gt_ccs_mode.o \
@@ -92,6 +93,7 @@ xe-y += xe_bb.o \
 	xe_guc.o \
 	xe_guc_ads.o \
 	xe_guc_ct.o \
+	xe_guc_db_mgr.o \
 	xe_guc_debugfs.o \
 	xe_guc_hwconfig.o \
 	xe_guc_log.o \
@@ -137,6 +139,7 @@ xe-y += xe_bb.o \
 	xe_uc_debugfs.o \
 	xe_uc_fw.o \
 	xe_vm.o \
+	xe_vram_freq.o \
 	xe_wait_user_fence.o \
 	xe_wa.o \
 	xe_wopcm.o
@@ -145,18 +148,23 @@ xe-y += xe_bb.o \
 xe-$(CONFIG_HWMON) += xe_hwmon.o
 
 # graphics virtualization (SR-IOV) support
-xe-y += xe_sriov.o
+xe-y += \
+	xe_guc_relay.o \
+	xe_memirq.o \
+	xe_sriov.o
 
 xe-$(CONFIG_PCI_IOV) += \
 	xe_lmtt.o \
 	xe_lmtt_2l.o \
 	xe_lmtt_ml.o
 
+xe-$(CONFIG_DRM_XE_KUNIT_TEST) += \
+	tests/xe_kunit_helpers.o
+
 # i915 Display compat #defines and #includes
 subdir-ccflags-$(CONFIG_DRM_XE_DISPLAY) += \
 	-I$(srctree)/$(src)/display/ext \
 	-I$(srctree)/$(src)/compat-i915-headers \
-	-I$(srctree)/drivers/gpu/drm/xe/display/ \
 	-I$(srctree)/drivers/gpu/drm/i915/display/ \
 	-Ddrm_i915_gem_object=xe_bo \
 	-Ddrm_i915_private=xe_device
@@ -176,17 +184,17 @@ $(obj)/i915-display/%.o: $(srctree)/drivers/gpu/drm/i915/display/%.c FORCE
 
 # Display code specific to xe
 xe-$(CONFIG_DRM_XE_DISPLAY) += \
-	xe_display.o \
-	display/xe_fb_pin.o \
-	display/xe_hdcp_gsc.o \
-	display/xe_plane_initial.o \
-	display/xe_display_rps.o \
+	display/ext/i915_irq.o \
+	display/ext/i915_utils.o \
+	display/intel_fb_bo.o \
+	display/intel_fbdev_fb.o \
+	display/xe_display.o \
 	display/xe_display_misc.o \
+	display/xe_display_rps.o \
 	display/xe_dsb_buffer.o \
-	display/intel_fbdev_fb.o \
-	display/intel_fb_bo.o \
-	display/ext/i915_irq.o \
-	display/ext/i915_utils.o
+	display/xe_fb_pin.o \
+	display/xe_hdcp_gsc.o \
+	display/xe_plane_initial.o
 
 # SOC code shared with i915
 xe-$(CONFIG_DRM_XE_DISPLAY) += \
@@ -213,8 +221,6 @@ xe-$(CONFIG_DRM_XE_DISPLAY) += \
 	i915-display/intel_ddi.o \
 	i915-display/intel_ddi_buf_trans.o \
 	i915-display/intel_display.o \
-	i915-display/intel_display_debugfs.o \
-	i915-display/intel_display_debugfs_params.o \
 	i915-display/intel_display_device.o \
 	i915-display/intel_display_driver.o \
 	i915-display/intel_display_irq.o \
@@ -258,7 +264,6 @@ xe-$(CONFIG_DRM_XE_DISPLAY) += \
 	i915-display/intel_modeset_setup.o \
 	i915-display/intel_modeset_verify.o \
 	i915-display/intel_panel.o \
-	i915-display/intel_pipe_crc.o \
 	i915-display/intel_pmdemand.o \
 	i915-display/intel_pps.o \
 	i915-display/intel_psr.o \
@@ -285,6 +290,13 @@ ifeq ($(CONFIG_DRM_FBDEV_EMULATION),y)
 	xe-$(CONFIG_DRM_XE_DISPLAY) += i915-display/intel_fbdev.o
 endif
 
+ifeq ($(CONFIG_DEBUG_FS),y)
+	xe-$(CONFIG_DRM_XE_DISPLAY) += \
+		i915-display/intel_display_debugfs.o \
+		i915-display/intel_display_debugfs_params.o \
+		i915-display/intel_pipe_crc.o
+endif
+
 obj-$(CONFIG_DRM_XE) += xe.o
 obj-$(CONFIG_DRM_XE_KUNIT_TEST) += tests/
 

drivers/gpu/drm/xe/abi/gsc_proxy_commands_abi.h

@@ -0,0 +1,44 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2023 Intel Corporation
+ */
+
+#ifndef _ABI_GSC_PROXY_COMMANDS_ABI_H
+#define _ABI_GSC_PROXY_COMMANDS_ABI_H
+
+#include <linux/types.h>
+
+/* Heci client ID for proxy commands */
+#define HECI_MEADDRESS_PROXY 10
+
+/* FW-defined proxy header */
+struct xe_gsc_proxy_header {
+	/*
+	 * hdr:
+	 * Bits 0-7: type of the proxy message (see enum xe_gsc_proxy_type)
+	 * Bits 8-15: rsvd
+	 * Bits 16-31: length in bytes of the payload following the proxy header
+	 */
+	u32 hdr;
+#define GSC_PROXY_TYPE		 GENMASK(7, 0)
+#define GSC_PROXY_PAYLOAD_LENGTH GENMASK(31, 16)
+
+	u32 source;		/* Source of the Proxy message */
+	u32 destination;	/* Destination of the Proxy message */
+#define GSC_PROXY_ADDRESSING_KMD  0x10000
+#define GSC_PROXY_ADDRESSING_GSC  0x20000
+#define GSC_PROXY_ADDRESSING_CSME 0x30000
+
+	u32 status;		/* Command status */
+} __packed;
+
+/* FW-defined proxy types */
+enum xe_gsc_proxy_type {
+	GSC_PROXY_MSG_TYPE_PROXY_INVALID = 0,
+	GSC_PROXY_MSG_TYPE_PROXY_QUERY = 1,
+	GSC_PROXY_MSG_TYPE_PROXY_PAYLOAD = 2,
+	GSC_PROXY_MSG_TYPE_PROXY_END = 3,
+	GSC_PROXY_MSG_TYPE_PROXY_NOTIFICATION = 4,
+};
+
+#endif

drivers/gpu/drm/xe/abi/guc_actions_sriov_abi.h

@@ -0,0 +1,174 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2023 Intel Corporation
+ */
+
+#ifndef _GUC_ACTIONS_PF_ABI_H
+#define _GUC_ACTIONS_PF_ABI_H
+
+#include "guc_communication_ctb_abi.h"
+
+/**
+ * DOC: GUC2PF_RELAY_FROM_VF
+ *
+ * This message is used by the GuC firmware to forward a VF2PF `Relay Message`_
+ * received from the Virtual Function (VF) driver to this Physical Function (PF)
+ * driver.
+ *
+ * This message is always sent as `CTB HXG Message`_.
+ *
+ *  +---+-------+--------------------------------------------------------------+
+ *  |   | Bits  | Description                                                  |
+ *  +===+=======+==============================================================+
+ *  | 0 |    31 | ORIGIN = GUC_HXG_ORIGIN_GUC_                                 |
+ *  |   +-------+--------------------------------------------------------------+
+ *  |   | 30:28 | TYPE = GUC_HXG_TYPE_EVENT_                                   |
+ *  |   +-------+--------------------------------------------------------------+
+ *  |   | 27:16 | MBZ                                                          |
+ *  |   +-------+--------------------------------------------------------------+
+ *  |   |  15:0 | ACTION = _`XE_GUC_ACTION_GUC2PF_RELAY_FROM_VF` = 0x5100      |
+ *  +---+-------+--------------------------------------------------------------+
+ *  | 1 |  31:0 | **VFID** - source VF identifier                              |
+ *  +---+-------+--------------------------------------------------------------+
+ *  | 2 |  31:0 | **RELAY_ID** - VF/PF message ID                              |
+ *  +---+-------+-----------------+--------------------------------------------+
+ *  | 3 |  31:0 | **RELAY_DATA1** |                                            |
+ *  +---+-------+-----------------+                                            |
+ *  |...|       |                 |       [Embedded `Relay Message`_]          |
+ *  +---+-------+-----------------+                                            |
+ *  | n |  31:0 | **RELAY_DATAx** |                                            |
+ *  +---+-------+-----------------+--------------------------------------------+
+ */
+#define XE_GUC_ACTION_GUC2PF_RELAY_FROM_VF		0x5100
+
+#define GUC2PF_RELAY_FROM_VF_EVENT_MSG_MIN_LEN		(GUC_HXG_EVENT_MSG_MIN_LEN + 2u)
+#define GUC2PF_RELAY_FROM_VF_EVENT_MSG_MAX_LEN \
+	(GUC2PF_RELAY_FROM_VF_EVENT_MSG_MIN_LEN + GUC_RELAY_MSG_MAX_LEN)
+#define GUC2PF_RELAY_FROM_VF_EVENT_MSG_0_MBZ		GUC_HXG_EVENT_MSG_0_DATA0
+#define GUC2PF_RELAY_FROM_VF_EVENT_MSG_1_VFID		GUC_HXG_EVENT_MSG_n_DATAn
+#define GUC2PF_RELAY_FROM_VF_EVENT_MSG_2_RELAY_ID	GUC_HXG_EVENT_MSG_n_DATAn
+#define GUC2PF_RELAY_FROM_VF_EVENT_MSG_3_RELAY_DATA1	GUC_HXG_EVENT_MSG_n_DATAn
+#define GUC2PF_RELAY_FROM_VF_EVENT_MSG_n_RELAY_DATAx	GUC_HXG_EVENT_MSG_n_DATAn
+#define GUC2PF_RELAY_FROM_VF_EVENT_MSG_NUM_RELAY_DATA	GUC_RELAY_MSG_MAX_LEN
+
+/**
+ * DOC: PF2GUC_RELAY_TO_VF
+ *
+ * This H2G message is used by the Physical Function (PF) driver to send embedded
+ * VF2PF `Relay Message`_ to the VF.
+ *
+ * This action message must be sent over CTB as `CTB HXG Message`_.
+ *
+ *  +---+-------+--------------------------------------------------------------+
+ *  |   | Bits  | Description                                                  |
+ *  +===+=======+==============================================================+
+ *  | 0 |    31 | ORIGIN = GUC_HXG_ORIGIN_HOST_                                |
+ *  |   +-------+--------------------------------------------------------------+
+ *  |   | 30:28 | TYPE = `GUC_HXG_TYPE_FAST_REQUEST`_                          |
+ *  |   +-------+--------------------------------------------------------------+
+ *  |   | 27:16 | MBZ                                                          |
+ *  |   +-------+--------------------------------------------------------------+
+ *  |   |  15:0 | ACTION = _`XE_GUC_ACTION_PF2GUC_RELAY_TO_VF` = 0x5101        |
+ *  +---+-------+--------------------------------------------------------------+
+ *  | 1 |  31:0 | **VFID** - target VF identifier                              |
+ *  +---+-------+--------------------------------------------------------------+
+ *  | 2 |  31:0 | **RELAY_ID** - VF/PF message ID                              |
+ *  +---+-------+-----------------+--------------------------------------------+
+ *  | 3 |  31:0 | **RELAY_DATA1** |                                            |
+ *  +---+-------+-----------------+                                            |
+ *  |...|       |                 |       [Embedded `Relay Message`_]          |
+ *  +---+-------+-----------------+                                            |
+ *  | n |  31:0 | **RELAY_DATAx** |                                            |
+ *  +---+-------+-----------------+--------------------------------------------+
+ */
+#define XE_GUC_ACTION_PF2GUC_RELAY_TO_VF		0x5101
+
+#define PF2GUC_RELAY_TO_VF_REQUEST_MSG_MIN_LEN		(GUC_HXG_REQUEST_MSG_MIN_LEN + 2u)
+#define PF2GUC_RELAY_TO_VF_REQUEST_MSG_MAX_LEN \
+	(PF2GUC_RELAY_TO_VF_REQUEST_MSG_MIN_LEN + GUC_RELAY_MSG_MAX_LEN)
+#define PF2GUC_RELAY_TO_VF_REQUEST_MSG_0_MBZ		GUC_HXG_REQUEST_MSG_0_DATA0
+#define PF2GUC_RELAY_TO_VF_REQUEST_MSG_1_VFID		GUC_HXG_REQUEST_MSG_n_DATAn
+#define PF2GUC_RELAY_TO_VF_REQUEST_MSG_2_RELAY_ID	GUC_HXG_REQUEST_MSG_n_DATAn
+#define PF2GUC_RELAY_TO_VF_REQUEST_MSG_3_RELAY_DATA1	GUC_HXG_REQUEST_MSG_n_DATAn
+#define PF2GUC_RELAY_TO_VF_REQUEST_MSG_n_RELAY_DATAx	GUC_HXG_REQUEST_MSG_n_DATAn
+#define PF2GUC_RELAY_TO_VF_REQUEST_MSG_NUM_RELAY_DATA	GUC_RELAY_MSG_MAX_LEN
+
+/**
+ * DOC: GUC2VF_RELAY_FROM_PF
+ *
+ * This message is used by the GuC firmware to deliver `Relay Message`_ from the
+ * Physical Function (PF) driver to this Virtual Function (VF) driver.
+ * See `GuC Relay Communication`_ for details.
+ *
+ * This message is always sent over CTB.
+ *
+ *  +---+-------+--------------------------------------------------------------+
+ *  |   | Bits  | Description                                                  |
+ *  +===+=======+==============================================================+
+ *  | 0 |    31 | ORIGIN = GUC_HXG_ORIGIN_GUC_                                 |
+ *  |   +-------+--------------------------------------------------------------+
+ *  |   | 30:28 | TYPE = GUC_HXG_TYPE_EVENT_                                   |
+ *  |   +-------+--------------------------------------------------------------+
+ *  |   | 27:16 | MBZ                                                          |
+ *  |   +-------+--------------------------------------------------------------+
+ *  |   |  15:0 | ACTION = _`XE_GUC_ACTION_GUC2VF_RELAY_FROM_PF` = 0x5102      |
+ *  +---+-------+--------------------------------------------------------------+
+ *  | 1 |  31:0 | **RELAY_ID** - VF/PF message ID                              |
+ *  +---+-------+-----------------+--------------------------------------------+
+ *  | 2 |  31:0 | **RELAY_DATA1** |                                            |
+ *  +---+-------+-----------------+                                            |
+ *  |...|       |                 |       [Embedded `Relay Message`_]          |
+ *  +---+-------+-----------------+                                            |
+ *  | n |  31:0 | **RELAY_DATAx** |                                            |
+ *  +---+-------+-----------------+--------------------------------------------+
+ */
+#define XE_GUC_ACTION_GUC2VF_RELAY_FROM_PF		0x5102
+
+#define GUC2VF_RELAY_FROM_PF_EVENT_MSG_MIN_LEN		(GUC_HXG_EVENT_MSG_MIN_LEN + 1u)
+#define GUC2VF_RELAY_FROM_PF_EVENT_MSG_MAX_LEN \
+	(GUC2VF_RELAY_FROM_PF_EVENT_MSG_MIN_LEN + GUC_RELAY_MSG_MAX_LEN)
+#define GUC2VF_RELAY_FROM_PF_EVENT_MSG_0_MBZ		GUC_HXG_EVENT_MSG_0_DATA0
+#define GUC2VF_RELAY_FROM_PF_EVENT_MSG_1_RELAY_ID	GUC_HXG_EVENT_MSG_n_DATAn
+#define GUC2VF_RELAY_FROM_PF_EVENT_MSG_n_RELAY_DATAx	GUC_HXG_EVENT_MSG_n_DATAn
+#define GUC2VF_RELAY_FROM_PF_EVENT_MSG_NUM_RELAY_DATA	GUC_RELAY_MSG_MAX_LEN
+
+/**
+ * DOC: VF2GUC_RELAY_TO_PF
+ *
+ * This message is used by the Virtual Function (VF) drivers to communicate with
+ * the Physical Function (PF) driver and send `Relay Message`_ to the PF driver.
+ * See `GuC Relay Communication`_ for details.
+ *
+ * This message must be sent over CTB.
+ *
+ *  +---+-------+--------------------------------------------------------------+
+ *  |   | Bits  | Description                                                  |
+ *  +===+=======+==============================================================+
+ *  | 0 |    31 | ORIGIN = GUC_HXG_ORIGIN_HOST_                                |
+ *  |   +-------+--------------------------------------------------------------+
+ *  |   | 30:28 | TYPE = GUC_HXG_TYPE_REQUEST_ or GUC_HXG_TYPE_FAST_REQUEST_   |
+ *  |   +-------+--------------------------------------------------------------+
+ *  |   | 27:16 | MBZ                                                          |
+ *  |   +-------+--------------------------------------------------------------+
+ *  |   |  15:0 | ACTION = _`XE_GUC_ACTION_VF2GUC_RELAY_TO_PF` = 0x5103        |
+ *  +---+-------+--------------------------------------------------------------+
+ *  | 1 |  31:0 | **RELAY_ID** - VF/PF message ID                              |
+ *  +---+-------+-----------------+--------------------------------------------+
+ *  | 2 |  31:0 | **RELAY_DATA1** |                                            |
+ *  +---+-------+-----------------+                                            |
+ *  |...|       |                 |       [Embedded `Relay Message`_]          |
+ *  +---+-------+-----------------+                                            |
+ *  | n |  31:0 | **RELAY_DATAx** |                                            |
+ *  +---+-------+-----------------+--------------------------------------------+
+ */
+#define XE_GUC_ACTION_VF2GUC_RELAY_TO_PF		0x5103
+
+#define VF2GUC_RELAY_TO_PF_REQUEST_MSG_MIN_LEN		(GUC_HXG_REQUEST_MSG_MIN_LEN + 1u)
+#define VF2GUC_RELAY_TO_PF_REQUEST_MSG_MAX_LEN \
+	(VF2GUC_RELAY_TO_PF_REQUEST_MSG_MIN_LEN + GUC_RELAY_MSG_MAX_LEN)
+#define VF2GUC_RELAY_TO_PF_REQUEST_MSG_0_MBZ		GUC_HXG_REQUEST_MSG_0_DATA0
+#define VF2GUC_RELAY_TO_PF_REQUEST_MSG_1_RELAY_ID	GUC_HXG_REQUEST_MSG_n_DATAn
+#define VF2GUC_RELAY_TO_PF_REQUEST_MSG_n_RELAY_DATAx	GUC_HXG_REQUEST_MSG_n_DATAn
+#define VF2GUC_RELAY_TO_PF_REQUEST_MSG_NUM_RELAY_DATA	GUC_RELAY_MSG_MAX_LEN
+
+#endif

drivers/gpu/drm/xe/abi/guc_communication_ctb_abi.h

@@ -81,12 +81,13 @@ static_assert(sizeof(struct guc_ct_buffer_desc) == 64);
 
 #define GUC_CTB_HDR_LEN				1u
 #define GUC_CTB_MSG_MIN_LEN			GUC_CTB_HDR_LEN
-#define GUC_CTB_MSG_MAX_LEN			256u
+#define GUC_CTB_MSG_MAX_LEN			(GUC_CTB_MSG_MIN_LEN + GUC_CTB_MAX_DWORDS)
 #define GUC_CTB_MSG_0_FENCE			(0xffffu << 16)
 #define GUC_CTB_MSG_0_FORMAT			(0xfu << 12)
 #define   GUC_CTB_FORMAT_HXG			0u
 #define GUC_CTB_MSG_0_RESERVED			(0xfu << 8)
 #define GUC_CTB_MSG_0_NUM_DWORDS		(0xffu << 0)
+#define   GUC_CTB_MAX_DWORDS			255
 
 /**
  * DOC: CTB HXG Message

drivers/gpu/drm/xe/abi/guc_messages_abi.h

@@ -24,6 +24,7 @@
  *  |   | 30:28 | **TYPE** - message type                                      |
  *  |   |       |   - _`GUC_HXG_TYPE_REQUEST` = 0                              |
  *  |   |       |   - _`GUC_HXG_TYPE_EVENT` = 1                                |
+ *  |   |       |   - _`GUC_HXG_TYPE_FAST_REQUEST` = 2                         |
  *  |   |       |   - _`GUC_HXG_TYPE_NO_RESPONSE_BUSY` = 3                     |
  *  |   |       |   - _`GUC_HXG_TYPE_NO_RESPONSE_RETRY` = 5                    |
  *  |   |       |   - _`GUC_HXG_TYPE_RESPONSE_FAILURE` = 6                     |
@@ -46,6 +47,7 @@
 #define GUC_HXG_MSG_0_TYPE			(0x7u << 28)
 #define   GUC_HXG_TYPE_REQUEST			0u
 #define   GUC_HXG_TYPE_EVENT			1u
+#define   GUC_HXG_TYPE_FAST_REQUEST		2u
 #define   GUC_HXG_TYPE_NO_RESPONSE_BUSY		3u
 #define   GUC_HXG_TYPE_NO_RESPONSE_RETRY	5u
 #define   GUC_HXG_TYPE_RESPONSE_FAILURE		6u