Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Sarah Walker | 76 | 100.00% | 1 | 100.00% |
Total | 76 | 1 |
/* SPDX-License-Identifier: GPL-2.0-only OR MIT */ /* Copyright (c) 2023 Imagination Technologies Ltd. */ #ifndef PVR_ROGUE_FWIF_STREAM_H #define PVR_ROGUE_FWIF_STREAM_H /** * DOC: Streams * * Commands are submitted to the kernel driver in the form of streams. * * A command stream has the following layout : * - A 64-bit header containing: * * A u32 containing the length of the main stream inclusive of the length of the header. * * A u32 for padding. * - The main stream data. * - The extension stream (optional), which is composed of: * * One or more headers. * * The extension stream data, corresponding to the extension headers. * * The main stream provides the base command data. This has a fixed layout based on the features * supported by a given GPU. * * The extension stream provides the command parameters that are required for BRNs & ERNs for the * current GPU. This stream is comprised of one or more headers, followed by data for each given * BRN/ERN. * * Each header is a u32 containing a bitmask of quirks & enhancements in the extension stream, a * "type" field determining the set of quirks & enhancements the bitmask represents, and a * continuation bit determining whether any more headers are present. The headers are then followed * by command data; this is specific to each quirk/enhancement. All unused / reserved bits in the * header must be set to 0. * * All parameters and headers in the main and extension streams must be naturally aligned. * * If a parameter appears in both the main and extension streams, then the extension parameter is * used. */ /* * Stream extension header definition */ #define PVR_STREAM_EXTHDR_TYPE_SHIFT 29U #define PVR_STREAM_EXTHDR_TYPE_MASK (7U << PVR_STREAM_EXTHDR_TYPE_SHIFT) #define PVR_STREAM_EXTHDR_TYPE_MAX 8U #define PVR_STREAM_EXTHDR_CONTINUATION BIT(28U) #define PVR_STREAM_EXTHDR_DATA_MASK ~(PVR_STREAM_EXTHDR_TYPE_MASK | PVR_STREAM_EXTHDR_CONTINUATION) /* * Stream extension header - Geometry 0 */ #define PVR_STREAM_EXTHDR_TYPE_GEOM0 0U #define PVR_STREAM_EXTHDR_GEOM0_BRN49927 BIT(0U) #define PVR_STREAM_EXTHDR_GEOM0_VALID PVR_STREAM_EXTHDR_GEOM0_BRN49927 /* * Stream extension header - Fragment 0 */ #define PVR_STREAM_EXTHDR_TYPE_FRAG0 0U #define PVR_STREAM_EXTHDR_FRAG0_BRN47217 BIT(0U) #define PVR_STREAM_EXTHDR_FRAG0_BRN49927 BIT(1U) #define PVR_STREAM_EXTHDR_FRAG0_VALID PVR_STREAM_EXTHDR_FRAG0_BRN49927 /* * Stream extension header - Compute 0 */ #define PVR_STREAM_EXTHDR_TYPE_COMPUTE0 0U #define PVR_STREAM_EXTHDR_COMPUTE0_BRN49927 BIT(0U) #define PVR_STREAM_EXTHDR_COMPUTE0_VALID PVR_STREAM_EXTHDR_COMPUTE0_BRN49927 #endif /* PVR_ROGUE_FWIF_STREAM_H */
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