On 5/17/2021 11:42 PM, Claire Chang wrote:
> Split the debugfs creation to make the code reusable for supporting
> different bounce buffer pools, e.g. restricted DMA pool.
>
> Signed-off-by: Claire Chang
Reviewed-by: Florian Fainelli
On 5/17/2021 11:42 PM, Claire Chang wrote:
> Update is_swiotlb_active to add a struct device argument. This will be
> useful later to allow for restricted DMA pool.
>
> Signed-off-by: Claire Chang
Reviewed-by: Florian Fainelli
On 5/17/2021 11:42 PM, Claire Chang wrote:
> Add a new getter, get_io_tlb_mem, to help select the io_tlb_mem struct.
> The restricted DMA pool is preferred if available.
>
> Signed-off-by: Claire Chang
Reviewed-by: Florian Fainelli
On 5/17/2021 11:42 PM, Claire Chang wrote:
> Update is_swiotlb_buffer to add a struct device argument. This will be
> useful later to allow for restricted DMA pool.
>
> Signed-off-by: Claire Chang
Reviewed-by: Florian Fainelli
(!mem)
> + return -ENOMEM;
> +
> + if (PageHighMem(pfn_to_page(PHYS_PFN(rmem->base {
> + kfree(mem);
> + return -EINVAL;
This could probably deserve a warning here to indicate that the reserved
area must be accessible within the linear mapping as I would expect a
lot of people to trip over that.
Reviewed-by: Florian Fainelli
--
Florian
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On 5/17/2021 11:42 PM, Claire Chang wrote:
> Add a new wrapper __dma_direct_free_pages() that will be useful later
> for swiotlb_free().
>
> Signed-off-by: Claire Chang
Reviewed-by: Florian Fainelli
--
Florian
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On 5/17/2021 11:42 PM, Claire Chang wrote:
> Add a new function, swiotlb_init_io_tlb_mem, for the io_tlb_mem struct
> initialization to make the code reusable.
>
> Note that we now also call set_memory_decrypted in swiotlb_init_with_tbl.
>
> Signed-off-by: Claire Chang
> ---
> kernel/dma/swi
On 5/17/2021 11:42 PM, Claire Chang wrote:
> Add a new kconfig symbol, DMA_RESTRICTED_POOL, for restricted DMA pool.
>
> Signed-off-by: Claire Chang
Reviewed-by: Florian Fainelli
--
Florian
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