Messages in this thread | | | Date | Mon, 11 Sep 2023 11:33:57 +0200 | Subject | Re: [PATCH 9/9] dma_buf: heaps: mtk_sec_heap: Add a new CMA heap | From | AngeloGioacchino Del Regno <> |
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Il 11/09/23 04:30, Yong Wu ha scritto: > Create a new mtk_svp_cma heap from the CMA reserved buffer. > > When the first allocating buffer, use cma_alloc to prepare whole the > CMA range, then send its range to TEE to protect and manage. > For the later allocating, we just adds the cma_used_size. > > When SVP done, cma_release will release the buffer, then kernel may > reuse it. > > Signed-off-by: Yong Wu <yong.wu@mediatek.com> > --- > drivers/dma-buf/heaps/Kconfig | 2 +- > drivers/dma-buf/heaps/mtk_secure_heap.c | 121 +++++++++++++++++++++++- > 2 files changed, 119 insertions(+), 4 deletions(-) > > diff --git a/drivers/dma-buf/heaps/Kconfig b/drivers/dma-buf/heaps/Kconfig > index 729c0cf3eb7c..e101f788ecbf 100644 > --- a/drivers/dma-buf/heaps/Kconfig > +++ b/drivers/dma-buf/heaps/Kconfig > @@ -15,7 +15,7 @@ config DMABUF_HEAPS_CMA > > config DMABUF_HEAPS_MTK_SECURE > bool "DMA-BUF MediaTek Secure Heap" > - depends on DMABUF_HEAPS && TEE > + depends on DMABUF_HEAPS && TEE && CMA > help > Choose this option to enable dma-buf MediaTek secure heap for Secure > Video Path. This heap is backed by TEE client interfaces. If in > diff --git a/drivers/dma-buf/heaps/mtk_secure_heap.c b/drivers/dma-buf/heaps/mtk_secure_heap.c > index daf6cf2121a1..3f568fe6b569 100644 > --- a/drivers/dma-buf/heaps/mtk_secure_heap.c > +++ b/drivers/dma-buf/heaps/mtk_secure_heap.c
..snip..
> +} > + > +RESERVEDMEM_OF_DECLARE(mtk_secure_cma, "mediatek,secure_cma_chunkmem",
I'd suggest "mediatek,secure-heap" as compatible name.
> + mtk_secure_cma_init); > +
Regards, Angelo
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