From: Michal Wajdeczko <michal.wajdec...@intel.com>

Most of the changes to the 62.0.0 firmware revolved around CTB
communication channel. Conform to the new (stable) CTB protocol.

Signed-off-by: John Harrison <john.c.harri...@intel.com>
Signed-off-by: Michal Wajdeczko <michal.wajdec...@intel.com>
Signed-off-by: Matthew Brost <matthew.br...@intel.com>
---
 .../gpu/drm/i915/gt/uc/abi/guc_actions_abi.h  | 107 ++++++
 .../gt/uc/abi/guc_communication_ctb_abi.h     | 120 ++++--
 .../gt/uc/abi/guc_communication_mmio_abi.h    |  65 ++--
 drivers/gpu/drm/i915/gt/uc/intel_guc.c        | 107 ++++--
 drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c    |  45 +--
 drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c     | 356 +++++++++---------
 drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h     |   6 +-
 drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h   |  75 +---
 drivers/gpu/drm/i915/gt/uc/intel_guc_log.c    |  29 +-
 drivers/gpu/drm/i915/gt/uc/intel_guc_log.h    |   6 +-
 drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c      |  26 +-
 11 files changed, 521 insertions(+), 421 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/uc/abi/guc_actions_abi.h 
b/drivers/gpu/drm/i915/gt/uc/abi/guc_actions_abi.h
index 90efef8a73e4..dfaea0b54370 100644
--- a/drivers/gpu/drm/i915/gt/uc/abi/guc_actions_abi.h
+++ b/drivers/gpu/drm/i915/gt/uc/abi/guc_actions_abi.h
@@ -6,6 +6,113 @@
 #ifndef _ABI_GUC_ACTIONS_ABI_H
 #define _ABI_GUC_ACTIONS_ABI_H
 
+/**
+ * DOC: HOST2GUC_REGISTER_CTB
+ *
+ * This message is used as part of the `CTB based communication`_ setup.
+ *
+ * This message must be sent as `MMIO HXG Message`_.
+ *
+ *  
+---+-------+--------------------------------------------------------------+
+ *  |   | Bits  | Description                                                  
|
+ *  
+===+=======+==============================================================+
+ *  | 0 |    31 | ORIGIN = GUC_HXG_ORIGIN_HOST_                                
|
+ *  |   
+-------+--------------------------------------------------------------+
+ *  |   | 30:28 | TYPE = GUC_HXG_TYPE_REQUEST_                                 
|
+ *  |   
+-------+--------------------------------------------------------------+
+ *  |   | 27:16 | DATA0 = MBZ                                                  
|
+ *  |   
+-------+--------------------------------------------------------------+
+ *  |   |  15:0 | ACTION = _`GUC_ACTION_HOST2GUC_REGISTER_CTB`                 
|
+ *  
+---+-------+--------------------------------------------------------------+
+ *  | 1 | 31:12 | RESERVED = MBZ                                               
|
+ *  |   
+-------+--------------------------------------------------------------+
+ *  |   |  11:8 | **TYPE** - type for the `CT Buffer`_                         
|
+ *  |   |       |                                                              
|
+ *  |   |       |   - _`GUC_CTB_TYPE_HOST2GUC` = 0                             
|
+ *  |   |       |   - _`GUC_CTB_TYPE_GUC2HOST` = 1                             
|
+ *  |   
+-------+--------------------------------------------------------------+
+ *  |   |   7:0 | **SIZE** - size of the `CT Buffer`_ in 4K units minus 1      
|
+ *  
+---+-------+--------------------------------------------------------------+
+ *  | 2 |  31:0 | **DESC_ADDR** - GGTT address of the `CTB Descriptor`_        
|
+ *  
+---+-------+--------------------------------------------------------------+
+ *  | 3 |  31:0 | **BUFF_ADDF** - GGTT address of the `CT Buffer`_             
|
+ *  
+---+-------+--------------------------------------------------------------+
+ *
+ *  
+---+-------+--------------------------------------------------------------+
+ *  |   | Bits  | Description                                                  
|
+ *  
+===+=======+==============================================================+
+ *  | 0 |    31 | ORIGIN = GUC_HXG_ORIGIN_GUC_                                 
|
+ *  |   
+-------+--------------------------------------------------------------+
+ *  |   | 30:28 | TYPE = GUC_HXG_TYPE_RESPONSE_SUCCESS_                        
|
+ *  |   
+-------+--------------------------------------------------------------+
+ *  |   |  27:0 | DATA0 = MBZ                                                  
|
+ *  
+---+-------+--------------------------------------------------------------+
+ */
+#define GUC_ACTION_HOST2GUC_REGISTER_CTB               0x4505
+
+#define HOST2GUC_REGISTER_CTB_REQUEST_MSG_LEN          
(GUC_HXG_REQUEST_MSG_MIN_LEN + 3u)
+#define HOST2GUC_REGISTER_CTB_REQUEST_MSG_0_MBZ                
GUC_HXG_REQUEST_MSG_0_DATA0
+#define HOST2GUC_REGISTER_CTB_REQUEST_MSG_1_MBZ                (0xfffff << 12)
+#define HOST2GUC_REGISTER_CTB_REQUEST_MSG_1_TYPE       (0xf << 8)
+#define   GUC_CTB_TYPE_HOST2GUC                                0u
+#define   GUC_CTB_TYPE_GUC2HOST                                1u
+#define HOST2GUC_REGISTER_CTB_REQUEST_MSG_1_SIZE       (0xff << 0)
+#define HOST2GUC_REGISTER_CTB_REQUEST_MSG_2_DESC_ADDR  
GUC_HXG_REQUEST_MSG_n_DATAn
+#define HOST2GUC_REGISTER_CTB_REQUEST_MSG_3_BUFF_ADDR  
GUC_HXG_REQUEST_MSG_n_DATAn
+
+#define HOST2GUC_REGISTER_CTB_RESPONSE_MSG_LEN         
GUC_HXG_RESPONSE_MSG_MIN_LEN
+#define HOST2GUC_REGISTER_CTB_RESPONSE_MSG_0_MBZ       
GUC_HXG_RESPONSE_MSG_0_DATA0
+
+/**
+ * DOC: HOST2GUC_DEREGISTER_CTB
+ *
+ * This message is used as part of the `CTB based communication`_ teardown.
+ *
+ * This message must be sent as `MMIO HXG Message`_.
+ *
+ *  
+---+-------+--------------------------------------------------------------+
+ *  |   | Bits  | Description                                                  
|
+ *  
+===+=======+==============================================================+
+ *  | 0 |    31 | ORIGIN = GUC_HXG_ORIGIN_HOST_                                
|
+ *  |   
+-------+--------------------------------------------------------------+
+ *  |   | 30:28 | TYPE = GUC_HXG_TYPE_REQUEST_                                 
|
+ *  |   
+-------+--------------------------------------------------------------+
+ *  |   | 27:16 | DATA0 = MBZ                                                  
|
+ *  |   
+-------+--------------------------------------------------------------+
+ *  |   |  15:0 | ACTION = _`GUC_ACTION_HOST2GUC_DEREGISTER_CTB`               
|
+ *  
+---+-------+--------------------------------------------------------------+
+ *  | 1 | 31:12 | RESERVED = MBZ                                               
|
+ *  |   
+-------+--------------------------------------------------------------+
+ *  |   |  11:8 | **TYPE** - type of the `CT Buffer`_                          
|
+ *  |   |       |                                                              
|
+ *  |   |       | see `GUC_ACTION_HOST2GUC_REGISTER_CTB`_                      
|
+ *  |   
+-------+--------------------------------------------------------------+
+ *  |   |   7:0 | RESERVED = MBZ                                               
|
+ *  
+---+-------+--------------------------------------------------------------+
+ *
+ *  
+---+-------+--------------------------------------------------------------+
+ *  |   | Bits  | Description                                                  
|
+ *  
+===+=======+==============================================================+
+ *  | 0 |    31 | ORIGIN = GUC_HXG_ORIGIN_GUC_                                 
|
+ *  |   
+-------+--------------------------------------------------------------+
+ *  |   | 30:28 | TYPE = GUC_HXG_TYPE_RESPONSE_SUCCESS_                        
|
+ *  |   
+-------+--------------------------------------------------------------+
+ *  |   |  27:0 | DATA0 = MBZ                                                  
|
+ *  
+---+-------+--------------------------------------------------------------+
+ */
+#define GUC_ACTION_HOST2GUC_DEREGISTER_CTB             0x4506
+
+#define HOST2GUC_DEREGISTER_CTB_REQUEST_MSG_LEN                
(GUC_HXG_REQUEST_MSG_MIN_LEN + 1u)
+#define HOST2GUC_DEREGISTER_CTB_REQUEST_MSG_0_MBZ      
GUC_HXG_REQUEST_MSG_0_DATA0
+#define HOST2GUC_DEREGISTER_CTB_REQUEST_MSG_1_MBZ      (0xfffff << 12)
+#define HOST2GUC_DEREGISTER_CTB_REQUEST_MSG_1_TYPE     (0xf << 8)
+#define HOST2GUC_DEREGISTER_CTB_REQUEST_MSG_1_MBZ2     (0xff << 0)
+
+#define HOST2GUC_DEREGISTER_CTB_RESPONSE_MSG_LEN       
GUC_HXG_RESPONSE_MSG_MIN_LEN
+#define HOST2GUC_DEREGISTER_CTB_RESPONSE_MSG_0_MBZ     
GUC_HXG_RESPONSE_MSG_0_DATA0
+
+/* legacy definitions */
+
 enum intel_guc_action {
        INTEL_GUC_ACTION_DEFAULT = 0x0,
        INTEL_GUC_ACTION_REQUEST_PREEMPTION = 0x2,
diff --git a/drivers/gpu/drm/i915/gt/uc/abi/guc_communication_ctb_abi.h 
b/drivers/gpu/drm/i915/gt/uc/abi/guc_communication_ctb_abi.h
index d38935f47ecf..93d3e423fba6 100644
--- a/drivers/gpu/drm/i915/gt/uc/abi/guc_communication_ctb_abi.h
+++ b/drivers/gpu/drm/i915/gt/uc/abi/guc_communication_ctb_abi.h
@@ -7,6 +7,104 @@
 #define _ABI_GUC_COMMUNICATION_CTB_ABI_H
 
 #include <linux/types.h>
+#include <linux/build_bug.h>
+
+#include "guc_messages_abi.h"
+
+/**
+ * DOC: CTB Descriptor
+ *
+ *  
+---+-------+--------------------------------------------------------------+
+ *  |   | Bits  | Description                                                  
|
+ *  
+===+=======+==============================================================+
+ *  | 0 |  31:0 | **HEAD** - offset (in dwords) to the last dword that was     
|
+ *  |   |       | read from the `CT Buffer`_.                                  
|
+ *  |   |       | It can only be updated by the receiver.                      
|
+ *  
+---+-------+--------------------------------------------------------------+
+ *  | 1 |  31:0 | **TAIL** - offset (in dwords) to the last dword that was     
|
+ *  |   |       | written to the `CT Buffer`_.                                 
|
+ *  |   |       | It can only be updated by the sender.                        
|
+ *  
+---+-------+--------------------------------------------------------------+
+ *  | 2 |  31:0 | **STATUS** - status of the CTB                               
|
+ *  |   |       |                                                              
|
+ *  |   |       |   - _`GUC_CTB_STATUS_NO_ERROR` = 0 (normal operation)        
|
+ *  |   |       |   - _`GUC_CTB_STATUS_OVERFLOW` = 1 (head/tail too large)     
|
+ *  |   |       |   - _`GUC_CTB_STATUS_UNDERFLOW` = 2 (truncated message)      
|
+ *  |   |       |   - _`GUC_CTB_STATUS_MISMATCH` = 4 (head/tail modified)      
|
+ *  
+---+-------+--------------------------------------------------------------+
+ *  |...|       | RESERVED = MBZ                                               
|
+ *  
+---+-------+--------------------------------------------------------------+
+ *  | 15|  31:0 | RESERVED = MBZ                                               
|
+ *  
+---+-------+--------------------------------------------------------------+
+ */
+
+struct guc_ct_buffer_desc {
+       u32 head;
+       u32 tail;
+       u32 status;
+#define GUC_CTB_STATUS_NO_ERROR                                0
+#define GUC_CTB_STATUS_OVERFLOW                                (1 << 0)
+#define GUC_CTB_STATUS_UNDERFLOW                       (1 << 1)
+#define GUC_CTB_STATUS_MISMATCH                                (1 << 2)
+       u32 reserved[13];
+} __packed;
+static_assert(sizeof(struct guc_ct_buffer_desc) == 64);
+
+/**
+ * DOC: CTB Message
+ *
+ *  
+---+-------+--------------------------------------------------------------+
+ *  |   | Bits  | Description                                                  
|
+ *  
+===+=======+==============================================================+
+ *  | 0 | 31:16 | **FENCE** - message identifier                               
|
+ *  |   
+-------+--------------------------------------------------------------+
+ *  |   | 15:12 | **FORMAT** - format of the CTB message                       
|
+ *  |   |       |  - _`GUC_CTB_FORMAT_HXG` = 0 - see `CTB HXG Message`_        
|
+ *  |   
+-------+--------------------------------------------------------------+
+ *  |   |  11:8 | **RESERVED**                                                 
|
+ *  |   
+-------+--------------------------------------------------------------+
+ *  |   |   7:0 | **NUM_DWORDS** - length of the CTB message (w/o header)      
|
+ *  
+---+-------+--------------------------------------------------------------+
+ *  | 1 |  31:0 | optional (depends on FORMAT)                                 
|
+ *  +---+-------+                                                              
|
+ *  |...|       |                                                              
|
+ *  +---+-------+                                                              
|
+ *  | n |  31:0 |                                                              
|
+ *  
+---+-------+--------------------------------------------------------------+
+ */
+
+#define GUC_CTB_MSG_MIN_LEN                    1u
+#define GUC_CTB_MSG_MAX_LEN                    256u
+#define GUC_CTB_MSG_0_FENCE                    (0xffff << 16)
+#define GUC_CTB_MSG_0_FORMAT                   (0xf << 12)
+#define   GUC_CTB_FORMAT_HXG                   0u
+#define GUC_CTB_MSG_0_RESERVED                 (0xf << 8)
+#define GUC_CTB_MSG_0_NUM_DWORDS               (0xff << 0)
+
+/**
+ * DOC: CTB HXG Message
+ *
+ *  
+---+-------+--------------------------------------------------------------+
+ *  |   | Bits  | Description                                                  
|
+ *  
+===+=======+==============================================================+
+ *  | 0 | 31:16 | FENCE                                                        
|
+ *  |   
+-------+--------------------------------------------------------------+
+ *  |   | 15:12 | FORMAT = GUC_CTB_FORMAT_HXG_                                 
|
+ *  |   
+-------+--------------------------------------------------------------+
+ *  |   |  11:8 | RESERVED = MBZ                                               
|
+ *  |   
+-------+--------------------------------------------------------------+
+ *  |   |   7:0 | NUM_DWORDS = length (in dwords) of the embedded HXG message  
|
+ *  
+---+-------+--------------------------------------------------------------+
+ *  | 1 |  31:0 |  +--------------------------------------------------------+  
|
+ *  +---+-------+  |                                                        |  
|
+ *  |...|       |  |  Embedded `HXG Message`_                               |  
|
+ *  +---+-------+  |                                                        |  
|
+ *  | n |  31:0 |  +--------------------------------------------------------+  
|
+ *  
+---+-------+--------------------------------------------------------------+
+ */
+
+#define GUC_CTB_HXG_MSG_MIN_LEN                (GUC_CTB_MSG_MIN_LEN + 
GUC_HXG_MSG_MIN_LEN)
+#define GUC_CTB_HXG_MSG_MAX_LEN                GUC_CTB_MSG_MAX_LEN
 
 /**
  * DOC: CTB based communication
@@ -60,28 +158,6 @@
  * - **flags**, holds various bits to control message handling
  */
 
-/*
- * Describes single command transport buffer.
- * Used by both guc-master and clients.
- */
-struct guc_ct_buffer_desc {
-       u32 addr;               /* gfx address */
-       u64 host_private;       /* host private data */
-       u32 size;               /* size in bytes */
-       u32 head;               /* offset updated by GuC*/
-       u32 tail;               /* offset updated by owner */
-       u32 is_in_error;        /* error indicator */
-       u32 reserved1;
-       u32 reserved2;
-       u32 owner;              /* id of the channel owner */
-       u32 owner_sub_id;       /* owner-defined field for extra tracking */
-       u32 reserved[5];
-} __packed;
-
-/* Type of command transport buffer */
-#define INTEL_GUC_CT_BUFFER_TYPE_SEND  0x0u
-#define INTEL_GUC_CT_BUFFER_TYPE_RECV  0x1u
-
 /*
  * Definition of the command transport message header (DW0)
  *
diff --git a/drivers/gpu/drm/i915/gt/uc/abi/guc_communication_mmio_abi.h 
b/drivers/gpu/drm/i915/gt/uc/abi/guc_communication_mmio_abi.h
index be066a62e9e0..bbf1ddb77434 100644
--- a/drivers/gpu/drm/i915/gt/uc/abi/guc_communication_mmio_abi.h
+++ b/drivers/gpu/drm/i915/gt/uc/abi/guc_communication_mmio_abi.h
@@ -7,46 +7,43 @@
 #define _ABI_GUC_COMMUNICATION_MMIO_ABI_H
 
 /**
- * DOC: MMIO based communication
+ * DOC: GuC MMIO based communication
  *
- * The MMIO based communication between Host and GuC uses software scratch
- * registers, where first register holds data treated as message header,
- * and other registers are used to hold message payload.
+ * The MMIO based communication between Host and GuC relies on special
+ * hardware registers which format could be defined by the software
+ * (so called scratch registers).
  *
- * For Gen9+, GuC uses software scratch registers 0xC180-0xC1B8,
- * but no H2G command takes more than 8 parameters and the GuC FW
- * itself uses an 8-element array to store the H2G message.
+ * Each MMIO based message, both Host to GuC (H2G) and GuC to Host (G2H)
+ * messages, which maximum length depends on number of available scratch
+ * registers, is directly written into those scratch registers.
  *
- *      +-----------+---------+---------+---------+
- *      |  MMIO[0]  | MMIO[1] |   ...   | MMIO[n] |
- *      +-----------+---------+---------+---------+
- *      | header    |      optional payload       |
- *      +======+====+=========+=========+=========+
- *      | 31:28|type|         |         |         |
- *      +------+----+         |         |         |
- *      | 27:16|data|         |         |         |
- *      +------+----+         |         |         |
- *      |  15:0|code|         |         |         |
- *      +------+----+---------+---------+---------+
+ * For Gen9+, there are 16 software scratch registers 0xC180-0xC1B8,
+ * but no H2G command takes more than 4 parameters and the GuC firmware
+ * itself uses an 4-element array to store the H2G message.
  *
- * The message header consists of:
+ * For Gen11+, there are additional 4 registers 0x190240-0x19024C, which
+ * are, regardless on lower count, preferred over legacy ones.
  *
- * - **type**, indicates message type
- * - **code**, indicates message code, is specific for **type**
- * - **data**, indicates message data, optional, depends on **code**
- *
- * The following message **types** are supported:
- *
- * - **REQUEST**, indicates Host-to-GuC request, requested GuC action code
- *   must be priovided in **code** field. Optional action specific parameters
- *   can be provided in remaining payload registers or **data** field.
- *
- * - **RESPONSE**, indicates GuC-to-Host response from earlier GuC request,
- *   action response status will be provided in **code** field. Optional
- *   response data can be returned in remaining payload registers or **data**
- *   field.
+ * The MMIO based communication is mainly used during driver initialization
+ * phase to setup the `CTB based communication`_ that will be used afterwards.
  */
 
-#define GUC_MAX_MMIO_MSG_LEN           8
+#define GUC_MAX_MMIO_MSG_LEN           4
+
+/**
+ * DOC: MMIO HXG Message
+ *
+ * Format of the MMIO messages follows definitions of `HXG Message`_.
+ *
+ *  
+---+-------+--------------------------------------------------------------+
+ *  |   | Bits  | Description                                                  
|
+ *  
+===+=======+==============================================================+
+ *  | 0 |  31:0 |  +--------------------------------------------------------+  
|
+ *  +---+-------+  |                                                        |  
|
+ *  |...|       |  |  Embedded `HXG Message`_                               |  
|
+ *  +---+-------+  |                                                        |  
|
+ *  | n |  31:0 |  +--------------------------------------------------------+  
|
+ *  
+---+-------+--------------------------------------------------------------+
+ */
 
 #endif /* _ABI_GUC_COMMUNICATION_MMIO_ABI_H */
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc.c 
b/drivers/gpu/drm/i915/gt/uc/intel_guc.c
index f147cb389a20..6661dcb02239 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.c
@@ -219,24 +219,19 @@ static u32 guc_ctl_log_params_flags(struct intel_guc *guc)
 
        BUILD_BUG_ON(!CRASH_BUFFER_SIZE);
        BUILD_BUG_ON(!IS_ALIGNED(CRASH_BUFFER_SIZE, UNIT));
-       BUILD_BUG_ON(!DPC_BUFFER_SIZE);
-       BUILD_BUG_ON(!IS_ALIGNED(DPC_BUFFER_SIZE, UNIT));
-       BUILD_BUG_ON(!ISR_BUFFER_SIZE);
-       BUILD_BUG_ON(!IS_ALIGNED(ISR_BUFFER_SIZE, UNIT));
+       BUILD_BUG_ON(!DEBUG_BUFFER_SIZE);
+       BUILD_BUG_ON(!IS_ALIGNED(DEBUG_BUFFER_SIZE, UNIT));
 
        BUILD_BUG_ON((CRASH_BUFFER_SIZE / UNIT - 1) >
                        (GUC_LOG_CRASH_MASK >> GUC_LOG_CRASH_SHIFT));
-       BUILD_BUG_ON((DPC_BUFFER_SIZE / UNIT - 1) >
-                       (GUC_LOG_DPC_MASK >> GUC_LOG_DPC_SHIFT));
-       BUILD_BUG_ON((ISR_BUFFER_SIZE / UNIT - 1) >
-                       (GUC_LOG_ISR_MASK >> GUC_LOG_ISR_SHIFT));
+       BUILD_BUG_ON((DEBUG_BUFFER_SIZE / UNIT - 1) >
+                       (GUC_LOG_DEBUG_MASK >> GUC_LOG_DEBUG_SHIFT));
 
        flags = GUC_LOG_VALID |
                GUC_LOG_NOTIFY_ON_HALF_FULL |
                FLAG |
                ((CRASH_BUFFER_SIZE / UNIT - 1) << GUC_LOG_CRASH_SHIFT) |
-               ((DPC_BUFFER_SIZE / UNIT - 1) << GUC_LOG_DPC_SHIFT) |
-               ((ISR_BUFFER_SIZE / UNIT - 1) << GUC_LOG_ISR_SHIFT) |
+               ((DEBUG_BUFFER_SIZE / UNIT - 1) << GUC_LOG_DEBUG_SHIFT) |
                (offset << GUC_LOG_BUF_ADDR_SHIFT);
 
        #undef UNIT
@@ -376,29 +371,27 @@ void intel_guc_fini(struct intel_guc *guc)
 /*
  * This function implements the MMIO based host to GuC interface.
  */
-int intel_guc_send_mmio(struct intel_guc *guc, const u32 *action, u32 len,
+int intel_guc_send_mmio(struct intel_guc *guc, const u32 *request, u32 len,
                        u32 *response_buf, u32 response_buf_size)
 {
+       struct drm_i915_private *i915 = guc_to_gt(guc)->i915;
        struct intel_uncore *uncore = guc_to_gt(guc)->uncore;
-       u32 status;
+       u32 header;
        int i;
        int ret;
 
        GEM_BUG_ON(!len);
        GEM_BUG_ON(len > guc->send_regs.count);
 
-       /* We expect only action code */
-       GEM_BUG_ON(*action & ~INTEL_GUC_MSG_CODE_MASK);
-
-       /* If CT is available, we expect to use MMIO only during init/fini */
-       GEM_BUG_ON(*action != 
INTEL_GUC_ACTION_REGISTER_COMMAND_TRANSPORT_BUFFER &&
-                  *action != 
INTEL_GUC_ACTION_DEREGISTER_COMMAND_TRANSPORT_BUFFER);
+       GEM_BUG_ON(FIELD_GET(GUC_HXG_MSG_0_ORIGIN, request[0]) != 
GUC_HXG_ORIGIN_HOST);
+       GEM_BUG_ON(FIELD_GET(GUC_HXG_MSG_0_TYPE, request[0]) != 
GUC_HXG_TYPE_REQUEST);
 
        mutex_lock(&guc->send_mutex);
        intel_uncore_forcewake_get(uncore, guc->send_regs.fw_domains);
 
+retry:
        for (i = 0; i < len; i++)
-               intel_uncore_write(uncore, guc_send_reg(guc, i), action[i]);
+               intel_uncore_write(uncore, guc_send_reg(guc, i), request[i]);
 
        intel_uncore_posting_read(uncore, guc_send_reg(guc, i - 1));
 
@@ -410,30 +403,74 @@ int intel_guc_send_mmio(struct intel_guc *guc, const u32 
*action, u32 len,
         */
        ret = __intel_wait_for_register_fw(uncore,
                                           guc_send_reg(guc, 0),
-                                          INTEL_GUC_MSG_TYPE_MASK,
-                                          INTEL_GUC_MSG_TYPE_RESPONSE <<
-                                          INTEL_GUC_MSG_TYPE_SHIFT,
-                                          10, 10, &status);
-       /* If GuC explicitly returned an error, convert it to -EIO */
-       if (!ret && !INTEL_GUC_MSG_IS_RESPONSE_SUCCESS(status))
-               ret = -EIO;
+                                          GUC_HXG_MSG_0_ORIGIN,
+                                          FIELD_PREP(GUC_HXG_MSG_0_ORIGIN,
+                                                     GUC_HXG_ORIGIN_GUC),
+                                          10, 10, &header);
+       if (unlikely(ret)) {
+timeout:
+               drm_err(&i915->drm, "mmio request %#x: no reply %x\n",
+                       request[0], header);
+               goto out;
+       }
 
-       if (ret) {
-               DRM_ERROR("MMIO: GuC action %#x failed with error %d %#x\n",
-                         action[0], ret, status);
+       if (FIELD_GET(GUC_HXG_MSG_0_TYPE, header) == 
GUC_HXG_TYPE_NO_RESPONSE_BUSY) {
+#define done ({ header = intel_uncore_read(uncore, guc_send_reg(guc, 0)); \
+               FIELD_GET(GUC_HXG_MSG_0_ORIGIN, header) != GUC_HXG_ORIGIN_GUC 
|| \
+               FIELD_GET(GUC_HXG_MSG_0_TYPE, header) != 
GUC_HXG_TYPE_NO_RESPONSE_BUSY; })
+
+               ret = wait_for(done, 1000);
+               if (unlikely(ret))
+                       goto timeout;
+               if (unlikely(FIELD_GET(GUC_HXG_MSG_0_ORIGIN, header) !=
+                                      GUC_HXG_ORIGIN_GUC))
+                       goto proto;
+#undef done
+       }
+
+       if (FIELD_GET(GUC_HXG_MSG_0_TYPE, header) == 
GUC_HXG_TYPE_NO_RESPONSE_RETRY) {
+               u32 reason = FIELD_GET(GUC_HXG_RETRY_MSG_0_REASON, header);
+
+               drm_dbg(&i915->drm, "mmio request %#x: retrying, reason %u\n",
+                       request[0], reason);
+               goto retry;
+       }
+
+       if (FIELD_GET(GUC_HXG_MSG_0_TYPE, header) == 
GUC_HXG_TYPE_RESPONSE_FAILURE) {
+               u32 hint = FIELD_GET(GUC_HXG_FAILURE_MSG_0_HINT, header);
+               u32 error = FIELD_GET(GUC_HXG_FAILURE_MSG_0_ERROR, header);
+
+               drm_err(&i915->drm, "mmio request %#x: failure %x/%u\n",
+                       request[0], error, hint);
+               ret = -ENXIO;
+               goto out;
+       }
+
+       if (FIELD_GET(GUC_HXG_MSG_0_TYPE, header) != 
GUC_HXG_TYPE_RESPONSE_SUCCESS) {
+proto:
+               drm_err(&i915->drm, "mmio request %#x: unexpected reply %#x\n",
+                       request[0], header);
+               ret = -EPROTO;
                goto out;
        }
 
        if (response_buf) {
-               int count = min(response_buf_size, guc->send_regs.count - 1);
+               int count = min(response_buf_size, guc->send_regs.count);
 
-               for (i = 0; i < count; i++)
+               GEM_BUG_ON(!count);
+
+               response_buf[0] = header;
+
+               for (i = 1; i < count; i++)
                        response_buf[i] = intel_uncore_read(uncore,
-                                                           guc_send_reg(guc, i 
+ 1));
-       }
+                                                           guc_send_reg(guc, 
i));
 
-       /* Use data from the GuC response as our return value */
-       ret = INTEL_GUC_MSG_TO_DATA(status);
+               /* Use number of copied dwords as our return value */
+               ret = count;
+       } else {
+               /* Use data from the GuC response as our return value */
+               ret = FIELD_GET(GUC_HXG_RESPONSE_MSG_0_DATA0, header);
+       }
 
 out:
        intel_uncore_forcewake_put(uncore, guc->send_regs.fw_domains);
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c 
b/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c
index 9abfbc6edbd6..b82145652d57 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c
@@ -24,10 +24,6 @@
  *      +---------------------------------------+
  *      | guc_gt_system_info                    |
  *      +---------------------------------------+
- *      | guc_clients_info                      |
- *      +---------------------------------------+
- *      | guc_ct_pool_entry[size]               |
- *      +---------------------------------------+
  *      | padding                               |
  *      +---------------------------------------+ <== 4K aligned
  *      | private data                          |
@@ -39,8 +35,6 @@ struct __guc_ads_blob {
        struct guc_ads ads;
        struct guc_policies policies;
        struct guc_gt_system_info system_info;
-       struct guc_clients_info clients_info;
-       struct guc_ct_pool_entry ct_pool[GUC_CT_POOL_SIZE];
 } __packed;
 
 static u32 guc_ads_private_data_size(struct intel_guc *guc)
@@ -59,38 +53,15 @@ static u32 guc_ads_blob_size(struct intel_guc *guc)
               guc_ads_private_data_size(guc);
 }
 
-static void guc_policy_init(struct guc_policy *policy)
-{
-       policy->execution_quantum = POLICY_DEFAULT_EXECUTION_QUANTUM_US;
-       policy->preemption_time = POLICY_DEFAULT_PREEMPTION_TIME_US;
-       policy->fault_time = POLICY_DEFAULT_FAULT_TIME_US;
-       policy->policy_flags = 0;
-}
-
 static void guc_policies_init(struct guc_policies *policies)
 {
-       struct guc_policy *policy;
-       u32 p, i;
-
-       policies->dpc_promote_time = POLICY_DEFAULT_DPC_PROMOTE_TIME_US;
-       policies->max_num_work_items = POLICY_MAX_NUM_WI;
-
-       for (p = 0; p < GUC_CLIENT_PRIORITY_NUM; p++) {
-               for (i = 0; i < GUC_MAX_ENGINE_CLASSES; i++) {
-                       policy = &policies->policy[p][i];
-
-                       guc_policy_init(policy);
-               }
-       }
-
+       policies->dpc_promote_time = GLOBAL_POLICY_DEFAULT_DPC_PROMOTE_TIME_US;
+       policies->max_num_work_items = GLOBAL_POLICY_MAX_NUM_WI;
+       /* Disable automatic resets as not yet supported. */
+       policies->global_flags = GLOBAL_POLICY_DISABLE_ENGINE_RESET;
        policies->is_valid = 1;
 }
 
-static void guc_ct_pool_entries_init(struct guc_ct_pool_entry *pool, u32 num)
-{
-       memset(pool, 0, num * sizeof(*pool));
-}
-
 static void guc_mapping_table_init(struct intel_gt *gt,
                                   struct guc_gt_system_info *system_info)
 {
@@ -178,17 +149,9 @@ static void __guc_ads_init(struct intel_guc *guc)
 
        base = intel_guc_ggtt_offset(guc, guc->ads_vma);
 
-       /* Clients info  */
-       guc_ct_pool_entries_init(blob->ct_pool, ARRAY_SIZE(blob->ct_pool));
-
-       blob->clients_info.clients_num = 1;
-       blob->clients_info.ct_pool_addr = base + ptr_offset(blob, ct_pool);
-       blob->clients_info.ct_pool_count = ARRAY_SIZE(blob->ct_pool);
-
        /* ADS */
        blob->ads.scheduler_policies = base + ptr_offset(blob, policies);
        blob->ads.gt_system_info = base + ptr_offset(blob, system_info);
-       blob->ads.clients_info = base + ptr_offset(blob, clients_info);
 
        /* Private Data */
        blob->ads.private_data = base + guc_ads_private_data_offset(guc);
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c 
b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c
index 8f7b148fef58..43409044528e 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c
@@ -103,61 +103,66 @@ void intel_guc_ct_init_early(struct intel_guc_ct *ct)
 static inline const char *guc_ct_buffer_type_to_str(u32 type)
 {
        switch (type) {
-       case INTEL_GUC_CT_BUFFER_TYPE_SEND:
+       case GUC_CTB_TYPE_HOST2GUC:
                return "SEND";
-       case INTEL_GUC_CT_BUFFER_TYPE_RECV:
+       case GUC_CTB_TYPE_GUC2HOST:
                return "RECV";
        default:
                return "<invalid>";
        }
 }
 
-static void guc_ct_buffer_desc_init(struct guc_ct_buffer_desc *desc,
-                                   u32 cmds_addr, u32 size)
+static void guc_ct_buffer_desc_init(struct guc_ct_buffer_desc *desc)
 {
        memset(desc, 0, sizeof(*desc));
-       desc->addr = cmds_addr;
-       desc->size = size;
-       desc->owner = CTB_OWNER_HOST;
 }
 
-static void guc_ct_buffer_reset(struct intel_guc_ct_buffer *ctb, u32 cmds_addr)
+static void guc_ct_buffer_reset(struct intel_guc_ct_buffer *ctb)
 {
-       guc_ct_buffer_desc_init(ctb->desc, cmds_addr, ctb->size);
+       ctb->broken = false;
+       guc_ct_buffer_desc_init(ctb->desc);
 }
 
 static void guc_ct_buffer_init(struct intel_guc_ct_buffer *ctb,
                               struct guc_ct_buffer_desc *desc,
-                              u32 *cmds, u32 size)
+                              u32 *cmds, u32 size_in_bytes)
 {
-       GEM_BUG_ON(size % 4);
+       GEM_BUG_ON(size_in_bytes % 4);
 
        ctb->desc = desc;
        ctb->cmds = cmds;
-       ctb->size = size;
+       ctb->size = size_in_bytes / 4;
 
-       guc_ct_buffer_reset(ctb, 0);
+       guc_ct_buffer_reset(ctb);
 }
 
-static int guc_action_register_ct_buffer(struct intel_guc *guc,
-                                        u32 desc_addr,
-                                        u32 type)
+static int guc_action_register_ct_buffer(struct intel_guc *guc, u32 type,
+                                        u32 desc_addr, u32 buff_addr, u32 size)
 {
-       u32 action[] = {
-               INTEL_GUC_ACTION_REGISTER_COMMAND_TRANSPORT_BUFFER,
-               desc_addr,
-               sizeof(struct guc_ct_buffer_desc),
-               type
+       u32 request[HOST2GUC_REGISTER_CTB_REQUEST_MSG_LEN] = {
+               FIELD_PREP(GUC_HXG_MSG_0_ORIGIN, GUC_HXG_ORIGIN_HOST) |
+               FIELD_PREP(GUC_HXG_MSG_0_TYPE, GUC_HXG_TYPE_REQUEST) |
+               FIELD_PREP(GUC_HXG_REQUEST_MSG_0_ACTION, 
GUC_ACTION_HOST2GUC_REGISTER_CTB),
+               FIELD_PREP(HOST2GUC_REGISTER_CTB_REQUEST_MSG_1_SIZE, size / 
SZ_4K - 1) |
+               FIELD_PREP(HOST2GUC_REGISTER_CTB_REQUEST_MSG_1_TYPE, type),
+               FIELD_PREP(HOST2GUC_REGISTER_CTB_REQUEST_MSG_2_DESC_ADDR, 
desc_addr),
+               FIELD_PREP(HOST2GUC_REGISTER_CTB_REQUEST_MSG_3_BUFF_ADDR, 
buff_addr),
        };
 
-       /* Can't use generic send(), CT registration must go over MMIO */
-       return intel_guc_send_mmio(guc, action, ARRAY_SIZE(action), NULL, 0);
+       GEM_BUG_ON(type != GUC_CTB_TYPE_HOST2GUC && type != 
GUC_CTB_TYPE_GUC2HOST);
+       GEM_BUG_ON(size % SZ_4K);
+
+       /* CT registration must go over MMIO */
+       return intel_guc_send_mmio(guc, request, ARRAY_SIZE(request), NULL, 0);
 }
 
-static int ct_register_buffer(struct intel_guc_ct *ct, u32 desc_addr, u32 type)
+static int ct_register_buffer(struct intel_guc_ct *ct, u32 type,
+                             u32 desc_addr, u32 buff_addr, u32 size)
 {
-       int err = guc_action_register_ct_buffer(ct_to_guc(ct), desc_addr, type);
+       int err;
 
+       err = guc_action_register_ct_buffer(ct_to_guc(ct), type,
+                                           desc_addr, buff_addr, size);
        if (unlikely(err))
                CT_ERROR(ct, "Failed to register %s buffer (err=%d)\n",
                         guc_ct_buffer_type_to_str(type), err);
@@ -166,14 +171,17 @@ static int ct_register_buffer(struct intel_guc_ct *ct, 
u32 desc_addr, u32 type)
 
 static int guc_action_deregister_ct_buffer(struct intel_guc *guc, u32 type)
 {
-       u32 action[] = {
-               INTEL_GUC_ACTION_DEREGISTER_COMMAND_TRANSPORT_BUFFER,
-               CTB_OWNER_HOST,
-               type
+       u32 request[HOST2GUC_DEREGISTER_CTB_REQUEST_MSG_LEN] = {
+               FIELD_PREP(GUC_HXG_MSG_0_ORIGIN, GUC_HXG_ORIGIN_HOST) |
+               FIELD_PREP(GUC_HXG_MSG_0_TYPE, GUC_HXG_TYPE_REQUEST) |
+               FIELD_PREP(GUC_HXG_REQUEST_MSG_0_ACTION, 
GUC_ACTION_HOST2GUC_DEREGISTER_CTB),
+               FIELD_PREP(HOST2GUC_DEREGISTER_CTB_REQUEST_MSG_1_TYPE, type),
        };
 
-       /* Can't use generic send(), CT deregistration must go over MMIO */
-       return intel_guc_send_mmio(guc, action, ARRAY_SIZE(action), NULL, 0);
+       GEM_BUG_ON(type != GUC_CTB_TYPE_HOST2GUC && type != 
GUC_CTB_TYPE_GUC2HOST);
+
+       /* CT deregistration must go over MMIO */
+       return intel_guc_send_mmio(guc, request, ARRAY_SIZE(request), NULL, 0);
 }
 
 static int ct_deregister_buffer(struct intel_guc_ct *ct, u32 type)
@@ -261,7 +269,7 @@ void intel_guc_ct_fini(struct intel_guc_ct *ct)
 int intel_guc_ct_enable(struct intel_guc_ct *ct)
 {
        struct intel_guc *guc = ct_to_guc(ct);
-       u32 base, cmds;
+       u32 base, desc, cmds;
        void *blob;
        int err;
 
@@ -277,23 +285,26 @@ int intel_guc_ct_enable(struct intel_guc_ct *ct)
        GEM_BUG_ON(blob != ct->ctbs.send.desc);
 
        /* (re)initialize descriptors */
-       cmds = base + ptrdiff(ct->ctbs.send.cmds, blob);
-       guc_ct_buffer_reset(&ct->ctbs.send, cmds);
-
-       cmds = base + ptrdiff(ct->ctbs.recv.cmds, blob);
-       guc_ct_buffer_reset(&ct->ctbs.recv, cmds);
+       guc_ct_buffer_reset(&ct->ctbs.send);
+       guc_ct_buffer_reset(&ct->ctbs.recv);
 
        /*
         * Register both CT buffers starting with RECV buffer.
         * Descriptors are in first half of the blob.
         */
-       err = ct_register_buffer(ct, base + ptrdiff(ct->ctbs.recv.desc, blob),
-                                INTEL_GUC_CT_BUFFER_TYPE_RECV);
+       desc = base + ptrdiff(ct->ctbs.recv.desc, blob);
+       cmds = base + ptrdiff(ct->ctbs.recv.cmds, blob);
+       err = ct_register_buffer(ct, GUC_CTB_TYPE_GUC2HOST,
+                                desc, cmds, ct->ctbs.recv.size * 4);
+
        if (unlikely(err))
                goto err_out;
 
-       err = ct_register_buffer(ct, base + ptrdiff(ct->ctbs.send.desc, blob),
-                                INTEL_GUC_CT_BUFFER_TYPE_SEND);
+       desc = base + ptrdiff(ct->ctbs.send.desc, blob);
+       cmds = base + ptrdiff(ct->ctbs.send.cmds, blob);
+       err = ct_register_buffer(ct, GUC_CTB_TYPE_HOST2GUC,
+                                desc, cmds, ct->ctbs.send.size * 4);
+
        if (unlikely(err))
                goto err_deregister;
 
@@ -302,7 +313,7 @@ int intel_guc_ct_enable(struct intel_guc_ct *ct)
        return 0;
 
 err_deregister:
-       ct_deregister_buffer(ct, INTEL_GUC_CT_BUFFER_TYPE_RECV);
+       ct_deregister_buffer(ct, GUC_CTB_TYPE_GUC2HOST);
 err_out:
        CT_PROBE_ERROR(ct, "Failed to enable CTB (%pe)\n", ERR_PTR(err));
        return err;
@@ -321,8 +332,8 @@ void intel_guc_ct_disable(struct intel_guc_ct *ct)
        ct->enabled = false;
 
        if (intel_guc_is_fw_running(guc)) {
-               ct_deregister_buffer(ct, INTEL_GUC_CT_BUFFER_TYPE_SEND);
-               ct_deregister_buffer(ct, INTEL_GUC_CT_BUFFER_TYPE_RECV);
+               ct_deregister_buffer(ct, GUC_CTB_TYPE_HOST2GUC);
+               ct_deregister_buffer(ct, GUC_CTB_TYPE_GUC2HOST);
        }
 }
 
@@ -354,24 +365,6 @@ static void write_barrier(struct intel_guc_ct *ct)
        }
 }
 
-/**
- * DOC: CTB Host to GuC request
- *
- * Format of the CTB Host to GuC request message is as follows::
- *
- *      +------------+---------+---------+---------+---------+
- *      |   msg[0]   |   [1]   |   [2]   |   ...   |  [n-1]  |
- *      +------------+---------+---------+---------+---------+
- *      |   MESSAGE  |       MESSAGE PAYLOAD                 |
- *      +   HEADER   +---------+---------+---------+---------+
- *      |            |    0    |    1    |   ...   |    n    |
- *      +============+=========+=========+=========+=========+
- *      |  len >= 1  |  FENCE  |     request specific data   |
- *      +------+-----+---------+---------+---------+---------+
- *
- *                   ^-----------------len-------------------^
- */
-
 static int ct_write(struct intel_guc_ct *ct,
                    const u32 *action,
                    u32 len /* in dwords */,
@@ -384,20 +377,22 @@ static int ct_write(struct intel_guc_ct *ct,
        u32 size = ctb->size;
        u32 used;
        u32 header;
+       u32 hxg;
        u32 *cmds = ctb->cmds;
        unsigned int i;
 
-       if (unlikely(desc->is_in_error))
+       if (unlikely(ctb->broken))
                return -EPIPE;
 
-       if (unlikely(!IS_ALIGNED(head | tail, 4) ||
-                    (tail | head) >= size))
+       if (unlikely(desc->status))
                goto corrupted;
 
-       /* later calculations will be done in dwords */
-       head /= 4;
-       tail /= 4;
-       size /= 4;
+       if (unlikely((tail | head) >= size)) {
+               CT_ERROR(ct, "Invalid offsets head=%u tail=%u (size=%u)\n",
+                        head, tail, size);
+               desc->status |= GUC_CTB_STATUS_OVERFLOW;
+               goto corrupted;
+       }
 
        /*
         * tail == head condition indicates empty. GuC FW does not support
@@ -413,22 +408,25 @@ static int ct_write(struct intel_guc_ct *ct,
                return -ENOSPC;
 
        /*
-        * Write the message. The format is the following:
-        * DW0: header (including action code)
-        * DW1: fence
-        * DW2+: action data
+        * dw0: CT header (including fence)
+        * dw1: HXG header (including action code)
+        * dw2+: action data
         */
-       header = (len << GUC_CT_MSG_LEN_SHIFT) |
-                GUC_CT_MSG_SEND_STATUS |
-                (action[0] << GUC_CT_MSG_ACTION_SHIFT);
+       header = FIELD_PREP(GUC_CTB_MSG_0_FORMAT, GUC_CTB_FORMAT_HXG) |
+                FIELD_PREP(GUC_CTB_MSG_0_NUM_DWORDS, len) |
+                FIELD_PREP(GUC_CTB_MSG_0_FENCE, fence);
 
-       CT_DEBUG(ct, "writing %*ph %*ph %*ph\n",
-                4, &header, 4, &fence, 4 * (len - 1), &action[1]);
+       hxg = FIELD_PREP(GUC_HXG_MSG_0_TYPE, GUC_HXG_TYPE_REQUEST) |
+             FIELD_PREP(GUC_HXG_REQUEST_MSG_0_ACTION |
+                        GUC_HXG_REQUEST_MSG_0_DATA0, action[0]);
+
+       CT_DEBUG(ct, "writing (tail %u) %*ph %*ph %*ph\n",
+                tail, 4, &header, 4, &hxg, 4 * (len - 1), &action[1]);
 
        cmds[tail] = header;
        tail = (tail + 1) % size;
 
-       cmds[tail] = fence;
+       cmds[tail] = hxg;
        tail = (tail + 1) % size;
 
        for (i = 1; i < len; i++) {
@@ -443,14 +441,15 @@ static int ct_write(struct intel_guc_ct *ct,
         */
        write_barrier(ct);
 
-       /* now update desc tail (back in bytes) */
-       desc->tail = tail * 4;
+       /* now update descriptor */
+       WRITE_ONCE(desc->tail, tail);
+
        return 0;
 
 corrupted:
-       CT_ERROR(ct, "Corrupted descriptor addr=%#x head=%u tail=%u size=%u\n",
-                desc->addr, desc->head, desc->tail, desc->size);
-       desc->is_in_error = 1;
+       CT_ERROR(ct, "Corrupted descriptor head=%u tail=%u status=%#x\n",
+                desc->head, desc->tail, desc->status);
+       ctb->broken = true;
        return -EPIPE;
 }
 
@@ -477,7 +476,9 @@ static int wait_for_ct_request_update(struct ct_request 
*req, u32 *status)
         * up to that length of time, then switch to a slower sleep-wait loop.
         * No GuC command should ever take longer than 10ms.
         */
-#define done INTEL_GUC_MSG_IS_RESPONSE(READ_ONCE(req->status))
+#define done \
+       (FIELD_GET(GUC_HXG_MSG_0_ORIGIN, READ_ONCE(req->status)) == \
+        GUC_HXG_ORIGIN_GUC)
        err = wait_for_us(done, 10);
        if (err)
                err = wait_for(done, 10);
@@ -532,21 +533,21 @@ static int ct_send(struct intel_guc_ct *ct,
        if (unlikely(err))
                goto unlink;
 
-       if (!INTEL_GUC_MSG_IS_RESPONSE_SUCCESS(*status)) {
+       if (FIELD_GET(GUC_HXG_MSG_0_TYPE, *status) != 
GUC_HXG_TYPE_RESPONSE_SUCCESS) {
                err = -EIO;
                goto unlink;
        }
 
        if (response_buf) {
                /* There shall be no data in the status */
-               WARN_ON(INTEL_GUC_MSG_TO_DATA(request.status));
+               WARN_ON(FIELD_GET(GUC_HXG_RESPONSE_MSG_0_DATA0, 
request.status));
                /* Return actual response len */
                err = request.response_len;
        } else {
                /* There shall be no response payload */
                WARN_ON(request.response_len);
                /* Return data decoded from the status dword */
-               err = INTEL_GUC_MSG_TO_DATA(*status);
+               err = FIELD_GET(GUC_HXG_RESPONSE_MSG_0_DATA0, *status);
        }
 
 unlink:
@@ -583,21 +584,6 @@ int intel_guc_ct_send(struct intel_guc_ct *ct, const u32 
*action, u32 len,
        return ret;
 }
 
-static inline unsigned int ct_header_get_len(u32 header)
-{
-       return (header >> GUC_CT_MSG_LEN_SHIFT) & GUC_CT_MSG_LEN_MASK;
-}
-
-static inline unsigned int ct_header_get_action(u32 header)
-{
-       return (header >> GUC_CT_MSG_ACTION_SHIFT) & GUC_CT_MSG_ACTION_MASK;
-}
-
-static inline bool ct_header_is_response(u32 header)
-{
-       return !!(header & GUC_CT_MSG_IS_RESPONSE);
-}
-
 static struct ct_incoming_msg *ct_alloc_msg(u32 num_dwords)
 {
        struct ct_incoming_msg *msg;
@@ -630,17 +616,18 @@ static int ct_read(struct intel_guc_ct *ct, struct 
ct_incoming_msg **msg)
        unsigned int i;
        u32 header;
 
-       if (unlikely(desc->is_in_error))
+       if (unlikely(ctb->broken))
                return -EPIPE;
 
-       if (unlikely(!IS_ALIGNED(head | tail, 4) ||
-                    (tail | head) >= size))
+       if (unlikely(desc->status))
                goto corrupted;
 
-       /* later calculations will be done in dwords */
-       head /= 4;
-       tail /= 4;
-       size /= 4;
+       if (unlikely((tail | head) >= size)) {
+               CT_ERROR(ct, "Invalid offsets head=%u tail=%u (size=%u)\n",
+                        head, tail, size);
+               desc->status |= GUC_CTB_STATUS_OVERFLOW;
+               goto corrupted;
+       }
 
        /* tail == head condition indicates empty */
        available = tail - head;
@@ -659,7 +646,7 @@ static int ct_read(struct intel_guc_ct *ct, struct 
ct_incoming_msg **msg)
        head = (head + 1) % size;
 
        /* message len with header */
-       len = ct_header_get_len(header) + 1;
+       len = FIELD_GET(GUC_CTB_MSG_0_NUM_DWORDS, header) + GUC_CTB_MSG_MIN_LEN;
        if (unlikely(len > (u32)available)) {
                CT_ERROR(ct, "Incomplete message %*ph %*ph %*ph\n",
                         4, &header,
@@ -667,6 +654,7 @@ static int ct_read(struct intel_guc_ct *ct, struct 
ct_incoming_msg **msg)
                              size - head : available - 1), &cmds[head],
                         4 * (head + available - 1 > size ?
                              available - 1 - size + head : 0), &cmds[0]);
+               desc->status |= GUC_CTB_STATUS_UNDERFLOW;
                goto corrupted;
        }
 
@@ -689,65 +677,36 @@ static int ct_read(struct intel_guc_ct *ct, struct 
ct_incoming_msg **msg)
        }
        CT_DEBUG(ct, "received %*ph\n", 4 * len, (*msg)->msg);
 
-       desc->head = head * 4;
+       /* now update descriptor */
+       WRITE_ONCE(desc->head, head);
+
        return available - len;
 
 corrupted:
-       CT_ERROR(ct, "Corrupted descriptor addr=%#x head=%u tail=%u size=%u\n",
-                desc->addr, desc->head, desc->tail, desc->size);
-       desc->is_in_error = 1;
+       CT_ERROR(ct, "Corrupted descriptor head=%u tail=%u status=%#x\n",
+                desc->head, desc->tail, desc->status);
+       ctb->broken = true;
        return -EPIPE;
 }
 
-/**
- * DOC: CTB GuC to Host response
- *
- * Format of the CTB GuC to Host response message is as follows::
- *
- *      +------------+---------+---------+---------+---------+---------+
- *      |   msg[0]   |   [1]   |   [2]   |   [3]   |   ...   |  [n-1]  |
- *      +------------+---------+---------+---------+---------+---------+
- *      |   MESSAGE  |       MESSAGE PAYLOAD                           |
- *      +   HEADER   +---------+---------+---------+---------+---------+
- *      |            |    0    |    1    |    2    |   ...   |    n    |
- *      +============+=========+=========+=========+=========+=========+
- *      |  len >= 2  |  FENCE  |  STATUS |   response specific data    |
- *      +------+-----+---------+---------+---------+---------+---------+
- *
- *                   ^-----------------------len-----------------------^
- */
-
 static int ct_handle_response(struct intel_guc_ct *ct, struct ct_incoming_msg 
*response)
 {
-       u32 header = response->msg[0];
-       u32 len = ct_header_get_len(header);
-       u32 fence;
-       u32 status;
-       u32 datalen;
+       u32 len = FIELD_GET(GUC_CTB_MSG_0_NUM_DWORDS, response->msg[0]);
+       u32 fence = FIELD_GET(GUC_CTB_MSG_0_FENCE, response->msg[0]);
+       const u32 *hxg = &response->msg[GUC_CTB_MSG_MIN_LEN];
+       const u32 *data = &hxg[GUC_HXG_MSG_MIN_LEN];
+       u32 datalen = len - GUC_HXG_MSG_MIN_LEN;
        struct ct_request *req;
        unsigned long flags;
        bool found = false;
        int err = 0;
 
-       GEM_BUG_ON(!ct_header_is_response(header));
-
-       /* Response payload shall at least include fence and status */
-       if (unlikely(len < 2)) {
-               CT_ERROR(ct, "Corrupted response (len %u)\n", len);
-               return -EPROTO;
-       }
-
-       fence = response->msg[1];
-       status = response->msg[2];
-       datalen = len - 2;
-
-       /* Format of the status follows RESPONSE message */
-       if (unlikely(!INTEL_GUC_MSG_IS_RESPONSE(status))) {
-               CT_ERROR(ct, "Corrupted response (status %#x)\n", status);
-               return -EPROTO;
-       }
+       GEM_BUG_ON(len < GUC_HXG_MSG_MIN_LEN);
+       GEM_BUG_ON(FIELD_GET(GUC_HXG_MSG_0_ORIGIN, hxg[0]) != 
GUC_HXG_ORIGIN_GUC);
+       GEM_BUG_ON(FIELD_GET(GUC_HXG_MSG_0_TYPE, hxg[0]) != 
GUC_HXG_TYPE_RESPONSE_SUCCESS &&
+                  FIELD_GET(GUC_HXG_MSG_0_TYPE, hxg[0]) != 
GUC_HXG_TYPE_RESPONSE_FAILURE);
 
-       CT_DEBUG(ct, "response fence %u status %#x\n", fence, status);
+       CT_DEBUG(ct, "response fence %u status %#x\n", fence, hxg[0]);
 
        spin_lock_irqsave(&ct->requests.lock, flags);
        list_for_each_entry(req, &ct->requests.pending, link) {
@@ -763,9 +722,9 @@ static int ct_handle_response(struct intel_guc_ct *ct, 
struct ct_incoming_msg *r
                        err = -EMSGSIZE;
                }
                if (datalen)
-                       memcpy(req->response_buf, response->msg + 3, 4 * 
datalen);
+                       memcpy(req->response_buf, data, 4 * datalen);
                req->response_len = datalen;
-               WRITE_ONCE(req->status, status);
+               WRITE_ONCE(req->status, hxg[0]);
                found = true;
                break;
        }
@@ -786,14 +745,16 @@ static int ct_handle_response(struct intel_guc_ct *ct, 
struct ct_incoming_msg *r
 static int ct_process_request(struct intel_guc_ct *ct, struct ct_incoming_msg 
*request)
 {
        struct intel_guc *guc = ct_to_guc(ct);
-       u32 header, action, len;
+       const u32 *hxg;
        const u32 *payload;
+       u32 hxg_len, action, len;
        int ret;
 
-       header = request->msg[0];
-       payload = &request->msg[1];
-       action = ct_header_get_action(header);
-       len = ct_header_get_len(header);
+       hxg = &request->msg[GUC_CTB_MSG_MIN_LEN];
+       hxg_len = request->size - GUC_CTB_MSG_MIN_LEN;
+       payload = &hxg[GUC_HXG_MSG_MIN_LEN];
+       action = FIELD_GET(GUC_HXG_EVENT_MSG_0_ACTION, hxg[0]);
+       len = hxg_len - GUC_HXG_MSG_MIN_LEN;
 
        CT_DEBUG(ct, "request %x %*ph\n", action, 4 * len, payload);
 
@@ -855,29 +816,12 @@ static void ct_incoming_request_worker_func(struct 
work_struct *w)
                queue_work(system_unbound_wq, &ct->requests.worker);
 }
 
-/**
- * DOC: CTB GuC to Host request
- *
- * Format of the CTB GuC to Host request message is as follows::
- *
- *      +------------+---------+---------+---------+---------+---------+
- *      |   msg[0]   |   [1]   |   [2]   |   [3]   |   ...   |  [n-1]  |
- *      +------------+---------+---------+---------+---------+---------+
- *      |   MESSAGE  |       MESSAGE PAYLOAD                           |
- *      +   HEADER   +---------+---------+---------+---------+---------+
- *      |            |    0    |    1    |    2    |   ...   |    n    |
- *      +============+=========+=========+=========+=========+=========+
- *      |     len    |            request specific data                |
- *      +------+-----+---------+---------+---------+---------+---------+
- *
- *                   ^-----------------------len-----------------------^
- */
-
-static int ct_handle_request(struct intel_guc_ct *ct, struct ct_incoming_msg 
*request)
+static int ct_handle_event(struct intel_guc_ct *ct, struct ct_incoming_msg 
*request)
 {
+       const u32 *hxg = &request->msg[GUC_CTB_MSG_MIN_LEN];
        unsigned long flags;
 
-       GEM_BUG_ON(ct_header_is_response(request->msg[0]));
+       GEM_BUG_ON(FIELD_GET(GUC_HXG_MSG_0_TYPE, hxg[0]) != GUC_HXG_TYPE_EVENT);
 
        spin_lock_irqsave(&ct->requests.lock, flags);
        list_add_tail(&request->link, &ct->requests.incoming);
@@ -887,15 +831,53 @@ static int ct_handle_request(struct intel_guc_ct *ct, 
struct ct_incoming_msg *re
        return 0;
 }
 
-static void ct_handle_msg(struct intel_guc_ct *ct, struct ct_incoming_msg *msg)
+static int ct_handle_hxg(struct intel_guc_ct *ct, struct ct_incoming_msg *msg)
 {
-       u32 header = msg->msg[0];
+       u32 origin, type;
+       u32 *hxg;
        int err;
 
-       if (ct_header_is_response(header))
+       if (unlikely(msg->size < GUC_CTB_HXG_MSG_MIN_LEN))
+               return -EBADMSG;
+
+       hxg = &msg->msg[GUC_CTB_MSG_MIN_LEN];
+
+       origin = FIELD_GET(GUC_HXG_MSG_0_ORIGIN, hxg[0]);
+       if (unlikely(origin != GUC_HXG_ORIGIN_GUC)) {
+               err = -EPROTO;
+               goto failed;
+       }
+
+       type = FIELD_GET(GUC_HXG_MSG_0_TYPE, hxg[0]);
+       switch (type) {
+       case GUC_HXG_TYPE_EVENT:
+               err = ct_handle_event(ct, msg);
+               break;
+       case GUC_HXG_TYPE_RESPONSE_SUCCESS:
+       case GUC_HXG_TYPE_RESPONSE_FAILURE:
                err = ct_handle_response(ct, msg);
+               break;
+       default:
+               err = -EOPNOTSUPP;
+       }
+
+       if (unlikely(err)) {
+failed:
+               CT_ERROR(ct, "Failed to handle HXG message (%pe) %*ph\n",
+                        ERR_PTR(err), 4 * GUC_HXG_MSG_MIN_LEN, hxg);
+       }
+       return err;
+}
+
+static void ct_handle_msg(struct intel_guc_ct *ct, struct ct_incoming_msg *msg)
+{
+       u32 format = FIELD_GET(GUC_CTB_MSG_0_FORMAT, msg->msg[0]);
+       int err;
+
+       if (format == GUC_CTB_FORMAT_HXG)
+               err = ct_handle_hxg(ct, msg);
        else
-               err = ct_handle_request(ct, msg);
+               err = -EOPNOTSUPP;
 
        if (unlikely(err)) {
                CT_ERROR(ct, "Failed to process CT message (%pe) %*ph\n",
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h 
b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h
index cb222f202301..1ae2dde6db93 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h
@@ -31,13 +31,15 @@ struct intel_guc;
  * @lock: protects access to the commands buffer and buffer descriptor
  * @desc: pointer to the buffer descriptor
  * @cmds: pointer to the commands buffer
- * @size: size of the commands buffer
+ * @size: size of the commands buffer in dwords
+ * @broken: flag to indicate if descriptor data is broken
  */
 struct intel_guc_ct_buffer {
        spinlock_t lock;
        struct guc_ct_buffer_desc *desc;
        u32 *cmds;
        u32 size;
+       bool broken;
 };
 
 
@@ -59,7 +61,7 @@ struct intel_guc_ct {
        struct tasklet_struct receive_tasklet;
 
        struct {
-               u32 last_fence; /* last fence used to send request */
+               u16 last_fence; /* last fence used to send request */
 
                spinlock_t lock; /* protects pending requests list */
                struct list_head pending; /* requests waiting for response */
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h 
b/drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h
index e9a9d85e2aa3..617ec601648d 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h
@@ -81,10 +81,8 @@
 #define   GUC_LOG_ALLOC_IN_MEGABYTE    (1 << 3)
 #define   GUC_LOG_CRASH_SHIFT          4
 #define   GUC_LOG_CRASH_MASK           (0x3 << GUC_LOG_CRASH_SHIFT)
-#define   GUC_LOG_DPC_SHIFT            6
-#define   GUC_LOG_DPC_MASK             (0x7 << GUC_LOG_DPC_SHIFT)
-#define   GUC_LOG_ISR_SHIFT            9
-#define   GUC_LOG_ISR_MASK             (0x7 << GUC_LOG_ISR_SHIFT)
+#define   GUC_LOG_DEBUG_SHIFT          6
+#define   GUC_LOG_DEBUG_MASK           (0xF << GUC_LOG_DEBUG_SHIFT)
 #define   GUC_LOG_BUF_ADDR_SHIFT       12
 
 #define GUC_CTL_WA                     1
@@ -247,32 +245,14 @@ struct guc_stage_desc {
 
 /* Scheduling policy settings */
 
-/* Reset engine upon preempt failure */
-#define POLICY_RESET_ENGINE            (1<<0)
-/* Preempt to idle on quantum expiry */
-#define POLICY_PREEMPT_TO_IDLE         (1<<1)
-
-#define POLICY_MAX_NUM_WI 15
-#define POLICY_DEFAULT_DPC_PROMOTE_TIME_US 500000
-#define POLICY_DEFAULT_EXECUTION_QUANTUM_US 1000000
-#define POLICY_DEFAULT_PREEMPTION_TIME_US 500000
-#define POLICY_DEFAULT_FAULT_TIME_US 250000
-
-struct guc_policy {
-       /* Time for one workload to execute. (in micro seconds) */
-       u32 execution_quantum;
-       /* Time to wait for a preemption request to completed before issuing a
-        * reset. (in micro seconds). */
-       u32 preemption_time;
-       /* How much time to allow to run after the first fault is observed.
-        * Then preempt afterwards. (in micro seconds) */
-       u32 fault_time;
-       u32 policy_flags;
-       u32 reserved[8];
-} __packed;
+#define GLOBAL_POLICY_MAX_NUM_WI 15
+
+/* Don't reset an engine upon preemption failure */
+#define GLOBAL_POLICY_DISABLE_ENGINE_RESET                             BIT(0)
+
+#define GLOBAL_POLICY_DEFAULT_DPC_PROMOTE_TIME_US 500000
 
 struct guc_policies {
-       struct guc_policy 
policy[GUC_CLIENT_PRIORITY_NUM][GUC_MAX_ENGINE_CLASSES];
        u32 submission_queue_depth[GUC_MAX_ENGINE_CLASSES];
        /* In micro seconds. How much time to allow before DPC processing is
         * called back via interrupt (to prevent DPC queue drain starving).
@@ -286,6 +266,7 @@ struct guc_policies {
         * idle. */
        u32 max_num_work_items;
 
+       u32 global_flags;
        u32 reserved[4];
 } __packed;
 
@@ -311,29 +292,13 @@ struct guc_gt_system_info {
        u32 generic_gt_sysinfo[GUC_GENERIC_GT_SYSINFO_MAX];
 } __packed;
 
-/* Clients info */
-struct guc_ct_pool_entry {
-       struct guc_ct_buffer_desc desc;
-       u32 reserved[7];
-} __packed;
-
-#define GUC_CT_POOL_SIZE       2
-
-struct guc_clients_info {
-       u32 clients_num;
-       u32 reserved0[13];
-       u32 ct_pool_addr;
-       u32 ct_pool_count;
-       u32 reserved[4];
-} __packed;
-
 /* GuC Additional Data Struct */
 struct guc_ads {
        struct guc_mmio_reg_set 
reg_state_list[GUC_MAX_ENGINE_CLASSES][GUC_MAX_INSTANCES_PER_CLASS];
        u32 reserved0;
        u32 scheduler_policies;
        u32 gt_system_info;
-       u32 clients_info;
+       u32 reserved1;
        u32 control_data;
        u32 golden_context_lrca[GUC_MAX_ENGINE_CLASSES];
        u32 eng_state_size[GUC_MAX_ENGINE_CLASSES];
@@ -344,8 +309,7 @@ struct guc_ads {
 /* GuC logging structures */
 
 enum guc_log_buffer_type {
-       GUC_ISR_LOG_BUFFER,
-       GUC_DPC_LOG_BUFFER,
+       GUC_DEBUG_LOG_BUFFER,
        GUC_CRASH_DUMP_LOG_BUFFER,
        GUC_MAX_LOG_BUFFER
 };
@@ -414,23 +378,6 @@ struct guc_shared_ctx_data {
        struct guc_ctx_report preempt_ctx_report[GUC_MAX_ENGINES_NUM];
 } __packed;
 
-#define __INTEL_GUC_MSG_GET(T, m) \
-       (((m) & INTEL_GUC_MSG_ ## T ## _MASK) >> INTEL_GUC_MSG_ ## T ## _SHIFT)
-#define INTEL_GUC_MSG_TO_TYPE(m)       __INTEL_GUC_MSG_GET(TYPE, m)
-#define INTEL_GUC_MSG_TO_DATA(m)       __INTEL_GUC_MSG_GET(DATA, m)
-#define INTEL_GUC_MSG_TO_CODE(m)       __INTEL_GUC_MSG_GET(CODE, m)
-
-#define __INTEL_GUC_MSG_TYPE_IS(T, m) \
-       (INTEL_GUC_MSG_TO_TYPE(m) == INTEL_GUC_MSG_TYPE_ ## T)
-#define INTEL_GUC_MSG_IS_REQUEST(m)    __INTEL_GUC_MSG_TYPE_IS(REQUEST, m)
-#define INTEL_GUC_MSG_IS_RESPONSE(m)   __INTEL_GUC_MSG_TYPE_IS(RESPONSE, m)
-
-#define INTEL_GUC_MSG_IS_RESPONSE_SUCCESS(m) \
-        (typecheck(u32, (m)) && \
-         ((m) & (INTEL_GUC_MSG_TYPE_MASK | INTEL_GUC_MSG_CODE_MASK)) == \
-         ((INTEL_GUC_MSG_TYPE_RESPONSE << INTEL_GUC_MSG_TYPE_SHIFT) | \
-          (INTEL_GUC_RESPONSE_STATUS_SUCCESS << INTEL_GUC_MSG_CODE_SHIFT)))
-
 /* This action will be programmed in C1BC - SOFT_SCRATCH_15_REG */
 enum intel_guc_recv_message {
        INTEL_GUC_RECV_MSG_CRASH_DUMP_POSTED = BIT(1),
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_log.c 
b/drivers/gpu/drm/i915/gt/uc/intel_guc_log.c
index c36d5eb5bbb9..ac0931f0374b 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_log.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_log.c
@@ -197,10 +197,8 @@ static bool guc_check_log_buf_overflow(struct 
intel_guc_log *log,
 static unsigned int guc_get_log_buffer_size(enum guc_log_buffer_type type)
 {
        switch (type) {
-       case GUC_ISR_LOG_BUFFER:
-               return ISR_BUFFER_SIZE;
-       case GUC_DPC_LOG_BUFFER:
-               return DPC_BUFFER_SIZE;
+       case GUC_DEBUG_LOG_BUFFER:
+               return DEBUG_BUFFER_SIZE;
        case GUC_CRASH_DUMP_LOG_BUFFER:
                return CRASH_BUFFER_SIZE;
        default:
@@ -245,7 +243,7 @@ static void guc_read_update_log_buffer(struct intel_guc_log 
*log)
        src_data += PAGE_SIZE;
        dst_data += PAGE_SIZE;
 
-       for (type = GUC_ISR_LOG_BUFFER; type < GUC_MAX_LOG_BUFFER; type++) {
+       for (type = GUC_DEBUG_LOG_BUFFER; type < GUC_MAX_LOG_BUFFER; type++) {
                /*
                 * Make a copy of the state structure, inside GuC log buffer
                 * (which is uncached mapped), on the stack to avoid reading
@@ -463,21 +461,16 @@ int intel_guc_log_create(struct intel_guc_log *log)
         *  +===============================+ 00B
         *  |    Crash dump state header    |
         *  +-------------------------------+ 32B
-        *  |       DPC state header        |
+        *  |      Debug state header       |
         *  +-------------------------------+ 64B
-        *  |       ISR state header        |
-        *  +-------------------------------+ 96B
         *  |                               |
         *  +===============================+ PAGE_SIZE (4KB)
         *  |        Crash Dump logs        |
         *  +===============================+ + CRASH_SIZE
-        *  |           DPC logs            |
-        *  +===============================+ + DPC_SIZE
-        *  |           ISR logs            |
-        *  +===============================+ + ISR_SIZE
+        *  |          Debug logs           |
+        *  +===============================+ + DEBUG_SIZE
         */
-       guc_log_size = PAGE_SIZE + CRASH_BUFFER_SIZE + DPC_BUFFER_SIZE +
-                       ISR_BUFFER_SIZE;
+       guc_log_size = PAGE_SIZE + CRASH_BUFFER_SIZE + DEBUG_BUFFER_SIZE;
 
        vma = intel_guc_allocate_vma(guc, guc_log_size);
        if (IS_ERR(vma)) {
@@ -675,10 +668,8 @@ static const char *
 stringify_guc_log_type(enum guc_log_buffer_type type)
 {
        switch (type) {
-       case GUC_ISR_LOG_BUFFER:
-               return "ISR";
-       case GUC_DPC_LOG_BUFFER:
-               return "DPC";
+       case GUC_DEBUG_LOG_BUFFER:
+               return "DEBUG";
        case GUC_CRASH_DUMP_LOG_BUFFER:
                return "CRASH";
        default:
@@ -708,7 +699,7 @@ void intel_guc_log_info(struct intel_guc_log *log, struct 
drm_printer *p)
 
        drm_printf(p, "\tRelay full count: %u\n", log->relay.full_count);
 
-       for (type = GUC_ISR_LOG_BUFFER; type < GUC_MAX_LOG_BUFFER; type++) {
+       for (type = GUC_DEBUG_LOG_BUFFER; type < GUC_MAX_LOG_BUFFER; type++) {
                drm_printf(p, "\t%s:\tflush count %10u, overflow count %10u\n",
                           stringify_guc_log_type(type),
                           log->stats[type].flush,
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_log.h 
b/drivers/gpu/drm/i915/gt/uc/intel_guc_log.h
index 11fccd0b2294..ac1ee1d5ce10 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_log.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_log.h
@@ -17,12 +17,10 @@ struct intel_guc;
 
 #ifdef CONFIG_DRM_I915_DEBUG_GUC
 #define CRASH_BUFFER_SIZE      SZ_2M
-#define DPC_BUFFER_SIZE                SZ_8M
-#define ISR_BUFFER_SIZE                SZ_8M
+#define DEBUG_BUFFER_SIZE      SZ_16M
 #else
 #define CRASH_BUFFER_SIZE      SZ_8K
-#define DPC_BUFFER_SIZE                SZ_32K
-#define ISR_BUFFER_SIZE                SZ_32K
+#define DEBUG_BUFFER_SIZE      SZ_64K
 #endif
 
 /*
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c 
b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
index df647c9a8d56..9f23e9de3237 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
@@ -48,19 +48,19 @@ void intel_uc_fw_change_status(struct intel_uc_fw *uc_fw,
  * firmware as TGL.
  */
 #define INTEL_UC_FIRMWARE_DEFS(fw_def, guc_def, huc_def) \
-       fw_def(ALDERLAKE_S, 0, guc_def(tgl, 49, 0, 1), huc_def(tgl,  7, 5, 0)) \
-       fw_def(ROCKETLAKE,  0, guc_def(tgl, 49, 0, 1), huc_def(tgl,  7, 5, 0)) \
-       fw_def(TIGERLAKE,   0, guc_def(tgl, 49, 0, 1), huc_def(tgl,  7, 5, 0)) \
-       fw_def(JASPERLAKE,  0, guc_def(ehl, 49, 0, 1), huc_def(ehl,  9, 0, 0)) \
-       fw_def(ELKHARTLAKE, 0, guc_def(ehl, 49, 0, 1), huc_def(ehl,  9, 0, 0)) \
-       fw_def(ICELAKE,     0, guc_def(icl, 49, 0, 1), huc_def(icl,  9, 0, 0)) \
-       fw_def(COMETLAKE,   5, guc_def(cml, 49, 0, 1), huc_def(cml,  4, 0, 0)) \
-       fw_def(COMETLAKE,   0, guc_def(kbl, 49, 0, 1), huc_def(kbl,  4, 0, 0)) \
-       fw_def(COFFEELAKE,  0, guc_def(kbl, 49, 0, 1), huc_def(kbl,  4, 0, 0)) \
-       fw_def(GEMINILAKE,  0, guc_def(glk, 49, 0, 1), huc_def(glk,  4, 0, 0)) \
-       fw_def(KABYLAKE,    0, guc_def(kbl, 49, 0, 1), huc_def(kbl,  4, 0, 0)) \
-       fw_def(BROXTON,     0, guc_def(bxt, 49, 0, 1), huc_def(bxt,  2, 0, 0)) \
-       fw_def(SKYLAKE,     0, guc_def(skl, 49, 0, 1), huc_def(skl,  2, 0, 0))
+       fw_def(ALDERLAKE_S, 0, guc_def(tgl, 62, 0, 0), huc_def(tgl,  7, 5, 0)) \
+       fw_def(ROCKETLAKE,  0, guc_def(tgl, 62, 0, 0), huc_def(tgl,  7, 5, 0)) \
+       fw_def(TIGERLAKE,   0, guc_def(tgl, 62, 0, 0), huc_def(tgl,  7, 5, 0)) \
+       fw_def(JASPERLAKE,  0, guc_def(ehl, 62, 0, 0), huc_def(ehl,  9, 0, 0)) \
+       fw_def(ELKHARTLAKE, 0, guc_def(ehl, 62, 0, 0), huc_def(ehl,  9, 0, 0)) \
+       fw_def(ICELAKE,     0, guc_def(icl, 62, 0, 0), huc_def(icl,  9, 0, 0)) \
+       fw_def(COMETLAKE,   5, guc_def(cml, 62, 0, 0), huc_def(cml,  4, 0, 0)) \
+       fw_def(COMETLAKE,   0, guc_def(kbl, 62, 0, 0), huc_def(kbl,  4, 0, 0)) \
+       fw_def(COFFEELAKE,  0, guc_def(kbl, 62, 0, 0), huc_def(kbl,  4, 0, 0)) \
+       fw_def(GEMINILAKE,  0, guc_def(glk, 62, 0, 0), huc_def(glk,  4, 0, 0)) \
+       fw_def(KABYLAKE,    0, guc_def(kbl, 62, 0, 0), huc_def(kbl,  4, 0, 0)) \
+       fw_def(BROXTON,     0, guc_def(bxt, 62, 0, 0), huc_def(bxt,  2, 0, 0)) \
+       fw_def(SKYLAKE,     0, guc_def(skl, 62, 0, 0), huc_def(skl,  2, 0, 0))
 
 #define __MAKE_UC_FW_PATH(prefix_, name_, major_, minor_, patch_) \
        "i915/" \
-- 
2.28.0

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