# SPDX-License-Identifier: GPL-2.0-only
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menuconfig DMABUF_HEAPS_ROCKCHIP
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bool "DMA-BUF Userland Memory Heaps for RockChip"
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select DMA_SHARED_BUFFER
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help
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Choose this option to enable the RockChip DMA-BUF userland memory heaps.
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This options creates per heap chardevs in /dev/rk_dma_heap/ which
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allows userspace to allocate dma-bufs that can be shared
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between drivers.
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config DMABUF_HEAPS_ROCKCHIP_CMA_HEAP
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tristate "DMA-BUF RockChip CMA Heap"
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depends on DMABUF_HEAPS_ROCKCHIP
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help
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Choose this option to enable dma-buf RockChip CMA heap. This heap is backed
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by the Contiguous Memory Allocator (CMA). If your system has these
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regions, you should say Y here.
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config DMABUF_HEAPS_ROCKCHIP_CMA_ALIGNMENT
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int "Maximum PAGE_SIZE order of alignment for RockChip CMA Heap"
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range 0 12
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depends on DMABUF_HEAPS_ROCKCHIP_CMA_HEAP
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default 8
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help
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DMA mapping framework by default aligns all buffers to the smallest
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PAGE_SIZE order which is greater than or equal to the requested buffer
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size. This works well for buffers up to a few hundreds kilobytes, but
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for larger buffers it just a memory waste. With this parameter you can
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specify the maximum PAGE_SIZE order for contiguous buffers. Larger
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buffers will be aligned only to this specified order. The order is
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expressed as a power of two multiplied by the PAGE_SIZE.
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For example, if your system defaults to 4KiB pages, the order value
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of 8 means that the buffers will be aligned up to 1MiB only.
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If unsure, leave the default value "8".
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config DMABUF_RK_HEAPS_DEBUG
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bool "DMA-BUF RockChip Heap Debug"
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depends on DMABUF_HEAPS_ROCKCHIP
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help
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Choose this option to enable dma-buf RockChip heap debug.
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config DMABUF_RK_HEAPS_DEBUG_PRINT
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bool "DMA-BUF RockChip Heap Debug print log enable"
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depends on DMABUF_HEAPS_ROCKCHIP
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help
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Choose this option to enable dma-buf RockChip heap debug.
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