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MGS-6010 [#ccc] gpu: add GetSGT callback for reserved_mem 

a GetSGT func callback was wanted when reserved_mem was exported

Signed-off-by: Jiyu Yang <jiyu.yang@nxp.com>
This commit is contained in:
Jiyu Yang 2020-10-14 09:49:09 +08:00 committed by Xianzhong
parent 54e7aa7ca3
commit 1ff58a46ef
1 changed files with 42 additions and 0 deletions
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42
drivers/mxc/gpu-viv/hal/os/linux/kernel/allocator/default/gc_hal_kernel_allocator_reserved_mem.c
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@ -476,6 +476,46 @@ reserved_mem_get_physical(
return gcvSTATUS_OK;
}
static gceSTATUS
reserved_mem_GetSGT(
IN gckALLOCATOR Allocator,
IN PLINUX_MDL Mdl,
IN gctSIZE_T Offset,
IN gctSIZE_T Bytes,
OUT gctPOINTER *SGT
)
{
struct page * page = gcvNULL;
struct sg_table *sgt = NULL;
struct reserved_mem *res = Mdl->priv;
gceSTATUS status = gcvSTATUS_OK;
gcmkASSERT(Offset + Bytes <= Mdl->numPages << PAGE_SHIFT);
sgt = kmalloc(sizeof(*sgt), GFP_KERNEL);
if (!sgt)
{
gcmkONERROR(gcvSTATUS_OUT_OF_MEMORY);
}
page = phys_to_page(res->start);
if (sg_alloc_table(sgt, 1, GFP_KERNEL)){
gcmkONERROR(gcvSTATUS_GENERIC_IO);
}
sg_set_page(sgt->sgl, page, PAGE_ALIGN(Bytes), Offset);
*SGT = (gctPOINTER)sgt;
OnError:
if (gcmIS_ERROR(status) && sgt)
{
kfree(sgt);
}
return status;
}
static void
reserved_mem_dtor(
gcsALLOCATOR *Allocator
@ -503,6 +543,7 @@ static gcsALLOCATOR_OPERATIONS reserved_mem_ops = {
.UnmapKernel = reserved_mem_unmap_kernel,
.Cache = reserved_mem_cache_op,
.Physical = reserved_mem_get_physical,
.GetSGT = reserved_mem_GetSGT,
};
/* GFP allocator entry. */
@ -538,6 +579,7 @@ _ReservedMemoryAllocatorInit(
allocator->capability = gcvALLOC_FLAG_LINUX_RESERVED_MEM
| gcvALLOC_FLAG_CONTIGUOUS
| gcvALLOC_FLAG_DMABUF_EXPORTABLE
| gcvALLOC_FLAG_CPU_ACCESS;
*Allocator = allocator;