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Diffstat (limited to 'dvalin/kernel/drivers/gpu/arm/midgard/csf/mali_kbase_csf_tiler_heap.h')
| -rw-r--r-- | dvalin/kernel/drivers/gpu/arm/midgard/csf/mali_kbase_csf_tiler_heap.h | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/dvalin/kernel/drivers/gpu/arm/midgard/csf/mali_kbase_csf_tiler_heap.h b/dvalin/kernel/drivers/gpu/arm/midgard/csf/mali_kbase_csf_tiler_heap.h new file mode 100644 index 0000000..04c27f7 --- /dev/null +++ b/dvalin/kernel/drivers/gpu/arm/midgard/csf/mali_kbase_csf_tiler_heap.h @@ -0,0 +1,115 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +/* + * + * (C) COPYRIGHT 2019-2021 ARM Limited. All rights reserved. + * + * This program is free software and is provided to you under the terms of the + * GNU General Public License version 2 as published by the Free Software + * Foundation, and any use by you of this program is subject to the terms + * of such GNU license. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, you can access it online at + * http://www.gnu.org/licenses/gpl-2.0.html. + * + */ + +#ifndef _KBASE_CSF_TILER_HEAP_H_ +#define _KBASE_CSF_TILER_HEAP_H_ + +#include <mali_kbase.h> + +/** + * kbase_csf_tiler_heap_context_init - Initialize the tiler heaps context for a + * GPU address space + * + * @kctx: Pointer to the kbase context being initialized. + * + * Return: 0 if successful or a negative error code on failure. + */ +int kbase_csf_tiler_heap_context_init(struct kbase_context *kctx); + +/** + * kbase_csf_tiler_heap_context_term - Terminate the tiler heaps context for a + * GPU address space + * + * This function deletes any chunked tiler heaps that weren't deleted before + * context termination. + * + * @kctx: Pointer to the kbase context being terminated. + */ +void kbase_csf_tiler_heap_context_term(struct kbase_context *kctx); + +/** + * kbase_csf_tiler_heap_init - Initialize a chunked tiler memory heap. + * + * @kctx: Pointer to the kbase context in which to allocate resources for the + * tiler heap. + * @chunk_size: Size of each chunk, in bytes. Must be page-aligned. + * @initial_chunks: The initial number of chunks to allocate. Must not be + * zero or greater than @max_chunks. + * @max_chunks: The maximum number of chunks that the heap should be allowed + * to use. Must not be less than @initial_chunks. + * @target_in_flight: Number of render-passes that the driver should attempt to + * keep in flight for which allocation of new chunks is + * allowed. Must not be zero. + * @gpu_heap_va: Where to store the GPU virtual address of the context that was + * set up for the tiler heap. + * @first_chunk_va: Where to store the GPU virtual address of the first chunk + * allocated for the heap. This points to the header of the + * heap chunk and not to the low address of free memory in it. + * + * Return: 0 if successful or a negative error code on failure. + */ +int kbase_csf_tiler_heap_init(struct kbase_context *kctx, + u32 chunk_size, u32 initial_chunks, u32 max_chunks, + u16 target_in_flight, u64 *gpu_heap_va, + u64 *first_chunk_va); + +/** + * kbasep_cs_tiler_heap_term - Terminate a chunked tiler memory heap. + * + * This function will terminate a chunked tiler heap and cause all the chunks + * (initial and those added during out-of-memory processing) to be freed. + * It is the caller's responsibility to ensure no further operations on this + * heap will happen before calling this function. + * + * @kctx: Pointer to the kbase context in which the tiler heap was initialized. + * @gpu_heap_va: The GPU virtual address of the context that was set up for the + * tiler heap. + * + * Return: 0 if successful or a negative error code on failure. + */ +int kbase_csf_tiler_heap_term(struct kbase_context *kctx, u64 gpu_heap_va); + +/** + * kbase_csf_tiler_heap_alloc_new_chunk - Allocate a new chunk for tiler heap. + * + * This function will allocate a new chunk for the chunked tiler heap depending + * on the settings provided by userspace when the heap was created and the + * heap's statistics (like number of render passes in-flight). + * It would return an appropriate error code if a new chunk couldn't be + * allocated. + * + * @kctx: Pointer to the kbase context in which the tiler heap was initialized. + * @gpu_heap_va: GPU virtual address of the heap context. + * @nr_in_flight: Number of render passes that are in-flight, must not be zero. + * @pending_frag_count: Number of render passes in-flight with completed vertex/tiler stage. + * The minimum value is zero but it must be less or equal to + * the total number of render passes in flight + * @new_chunk_ptr: Where to store the GPU virtual address & size of the new + * chunk allocated for the heap. + * + * Return: 0 if a new chunk was allocated otherwise an appropriate negative + * error code (like -EBUSY when a free chunk is expected to be + * available upon completion of a render pass and -EINVAL when + * invalid value was passed for one of the argument). + */ +int kbase_csf_tiler_heap_alloc_new_chunk(struct kbase_context *kctx, + u64 gpu_heap_va, u32 nr_in_flight, u32 pending_frag_count, u64 *new_chunk_ptr); +#endif |