On Tue, Jun 15, 2021 at 06:44:38PM +0200, Michal Wajdeczko wrote:
>
>
> On 15.06.2021 17:52, Matthew Brost wrote:
> > On Tue, Jun 15, 2021 at 11:00:09AM +0200, Michal Wajdeczko wrote:
> >>
> >>
> >> On 14.06.2021 21:42, Matthew Brost wrote:
> >>> From: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>
> >>>
> >>> 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.Harrison@xxxxxxxxx>
> >>> Signed-off-by: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>
> >>> Signed-off-by: Matthew Brost <matthew.brost@xxxxxxxxx>
> >>> ---
> >>> .../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` |
> >>> + * +---+-------+--------------------------------------------------------------+
> >>
> >> with removal of the action code number from the documentation we lost
> >> the possibility of searching for this number in case someone hits any of
> >> dmesg that was referring to it that like following:
> >>
> >> "mmio request %#x: no reply %x\n",
> >> "mmio request %#x: failure %x/%u\n",
> >> "Sending action %#x failed (err=%d status=%#X)\n",
> >>
> >> what's the actual benefit in removal if they were already in the table?
> >>
> >
> > The below define 'GUC_ACTION_HOST2GUC_REGISTER_CTB' still exists,
> > right?. Isn't it better to have this defined in a single place.
>
> it's not a doxygen so below define will not show up in rendered rst
> documentation
>
Ok, if you insist I'll add this back in but it does seems wrong to have
something in 2 places.
Matt
> >
> >>> + * | 1 | 31:12 | RESERVED = MBZ |
> >>> + * | +-------+--------------------------------------------------------------+
> >>> + * | | 11:8 | **TYPE** - type for the `CT Buffer`_ |
> >>> + * | | | |
> >>> + * | | | - _`GUC_CTB_TYPE_HOST2GUC` = 0 |
> >>> + * | | | - _`GUC_CTB_TYPE_GUC2HOST` = 1 |
> >>> + * | +-------+--------------------------------------------------------------+
> >>
> >> note that params are still well documented
> >>
> >
> > For consistency we likely should delete these values too.
> >
> > Matt
> >
> >>> + * | | 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/" \
> >>>
