Re: linux-next: Tree for Nov 22 (riscv: DMA_GLOBAL_POOL)

Randy Dunlap
2023-11-30T17:04:38Z

On 11/30/23 08:35, Conor Dooley wrote:
> On Wed, Nov 22, 2023 at 02:37:43PM -0800, Randy Dunlap wrote:
>>
>>
>> On 11/21/23 19:52, Stephen Rothwell wrote:
>>> Hi all,
>>>
>>> Changes since 20231121:
>>>
>>
>> on riscv 32-bit:
>>
>> WARNING: unmet direct dependencies detected for DMA_GLOBAL_POOL
>> Depends on [n]: !ARCH_HAS_DMA_SET_UNCACHED [=n] && !DMA_DIRECT_REMAP [=y]
>> Selected by [y]:
>> - ARCH_R9A07G043 [=y] && SOC_RENESAS [=y] && RISCV [=y] && NONPORTABLE [=y] && RISCV_ALTERNATIVE [=y] && !RISCV_ISA_ZICBOM [=n] && RISCV_SBI [=y]
>>
>> WARNING: unmet direct dependencies detected for DMA_GLOBAL_POOL
>> Depends on [n]: !ARCH_HAS_DMA_SET_UNCACHED [=n] && !DMA_DIRECT_REMAP [=y]
>> Selected by [y]:
>> - ARCH_R9A07G043 [=y] && SOC_RENESAS [=y] && RISCV [=y] && NONPORTABLE [=y] && RISCV_ALTERNATIVE [=y] && !RISCV_ISA_ZICBOM [=n] && RISCV_SBI [=y]
>
> DMA_DIRECT_REMAP is selected by the T-HEAD CMO erratum.
> DMA_GLOBAL_POOL by the Andes CMO erratum.
>
> We could do
>
> diff --git a/drivers/soc/renesas/Kconfig b/drivers/soc/renesas/Kconfig
> index 0071864c2111..d8723fdf1e55 100644
> --- a/drivers/soc/renesas/Kconfig
> +++ b/drivers/soc/renesas/Kconfig
> @@ -339,6 +339,7 @@ if RISCV
>
> config ARCH_R9A07G043
> bool "RISC-V Platform support for RZ/Five"
> + depends on !DMA_DIRECT_REMAP
> depends on NONPORTABLE
> depends on RISCV_ALTERNATIVE
> depends on !RISCV_ISA_ZICBOM

OK, that works for me.

Tested-by: Randy Dunlap <rdunlap@infradead.org> # build-tested

Thanks.

--
~Randy