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587c73343a
The GFX doorbell solution provides a mechanism for submission of workload to the graphics hardware by a ring3 application without the penalty of ring transition for each workload submission. This feature is not currently used by the Linux drivers, but in SR-IOV mode the doorbells are treated as shared resource and the PF driver must be able to provision exclusive range of doorbells IDs across all enabled VFs. Introduce simple GuC doorbell ID manager that will be used by the PF driver for VFs provisioning and can later be used by submission code once we are ready to switch from H2G based notifications to doorbells mechanism. Cc: Matthew Brost <matthew.brost@intel.com> Cc: Piotr Piórkowski <piotr.piorkowski@intel.com> Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com> Link: https://lore.kernel.org/r/20231218190629.502-4-michal.wajdeczko@intel.com Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
23 lines
695 B
C
23 lines
695 B
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2023 Intel Corporation
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*/
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#ifndef _XE_GUC_DB_MGR_H_
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#define _XE_GUC_DB_MGR_H_
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struct drm_printer;
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struct xe_guc_db_mgr;
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int xe_guc_db_mgr_init(struct xe_guc_db_mgr *dbm, unsigned int count);
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int xe_guc_db_mgr_reserve_id_locked(struct xe_guc_db_mgr *dbm);
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void xe_guc_db_mgr_release_id_locked(struct xe_guc_db_mgr *dbm, unsigned int id);
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int xe_guc_db_mgr_reserve_range(struct xe_guc_db_mgr *dbm, unsigned int count, unsigned int spare);
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void xe_guc_db_mgr_release_range(struct xe_guc_db_mgr *dbm, unsigned int start, unsigned int count);
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void xe_guc_db_mgr_print(struct xe_guc_db_mgr *dbm, struct drm_printer *p, int indent);
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#endif
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