diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h | 52 |
1 files changed, 18 insertions, 34 deletions
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 7c24d83f5c24..3e7fe237cfa5 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.h @@ -35,44 +35,28 @@ struct intel_guc_ct_buffer { u32 *cmds; }; -/** Represents pair of command transport buffers. - * - * Buffers go in pairs to allow bi-directional communication. - * To simplify the code we place both of them in the same vma. - * Buffers from the same pair must share unique owner id. - * - * @vma: pointer to the vma with pair of CT buffers - * @ctbs: buffers for sending(0) and receiving(1) commands - * @owner: unique identifier - * @next_fence: fence to be used with next send command - */ -struct intel_guc_ct_channel { - struct i915_vma *vma; - struct intel_guc_ct_buffer ctbs[2]; - u32 owner; - u32 next_fence; - bool enabled; -}; -/** Holds all command transport channels. +/** Top-level structure for Command Transport related data * - * @host_channel: main channel used by the host + * Includes a pair of CT buffers for bi-directional communication and tracking + * for the H2G and G2H requests sent and received through the buffers. */ struct intel_guc_ct { - struct intel_guc_ct_channel host_channel; - /* other channels are tbd */ + struct i915_vma *vma; + bool enabled; - /** @lock: protects pending requests list */ - spinlock_t lock; + /* buffers for sending(0) and receiving(1) commands */ + struct intel_guc_ct_buffer ctbs[2]; - /** @pending_requests: list of requests waiting for response */ - struct list_head pending_requests; + struct { + u32 next_fence; /* fence to be used with next request to send */ - /** @incoming_requests: list of incoming requests */ - struct list_head incoming_requests; + spinlock_t lock; /* protects pending requests list */ + struct list_head pending; /* requests waiting for response */ - /** @worker: worker for handling incoming requests */ - struct work_struct worker; + struct list_head incoming; /* incoming requests */ + struct work_struct worker; /* handler for incoming requests */ + } requests; }; void intel_guc_ct_init_early(struct intel_guc_ct *ct); @@ -81,13 +65,13 @@ void intel_guc_ct_fini(struct intel_guc_ct *ct); int intel_guc_ct_enable(struct intel_guc_ct *ct); void intel_guc_ct_disable(struct intel_guc_ct *ct); -static inline void intel_guc_ct_stop(struct intel_guc_ct *ct) +static inline bool intel_guc_ct_enabled(struct intel_guc_ct *ct) { - ct->host_channel.enabled = false; + return ct->enabled; } -int intel_guc_send_ct(struct intel_guc *guc, const u32 *action, u32 len, +int intel_guc_ct_send(struct intel_guc_ct *ct, const u32 *action, u32 len, u32 *response_buf, u32 response_buf_size); -void intel_guc_to_host_event_handler_ct(struct intel_guc *guc); +void intel_guc_ct_event_handler(struct intel_guc_ct *ct); #endif /* _INTEL_GUC_CT_H_ */ |