From: "Christian König" <christian.koenig@amd.com>
To: Anson Jacob <Anson.Jacob@amd.com>,
mpe@ellerman.id.au, benh@kernel.crashing.org, paulus@samba.org,
christophe.leroy@csgroup.eu, linuxppc-dev@lists.ozlabs.org,
amd-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org
Cc: Sunpeng.Li@amd.com, Harry.Wentland@amd.com,
qingqing.zhuo@amd.com, Rodrigo.Siqueira@amd.com,
roman.li@amd.com, Christoph Hellwig <hch@infradead.org>,
Aurabindo.Pillai@amd.com, Bhawanpreet.Lakha@amd.com,
bindu.r@amd.com
Subject: Re: [RFC v2 2/2] drm/amd/display: Use PPC FPU functions
Date: Wed, 21 Jul 2021 08:29:43 +0200 [thread overview]
Message-ID: <9094cea1-602e-6e71-4ff7-c06fd04af6c5@amd.com> (raw)
In-Reply-To: <20210721044801.840501-3-Anson.Jacob@amd.com>
Am 21.07.21 um 06:48 schrieb Anson Jacob:
> Use kernel_fpu_begin & kernel_fpu_end for PPC
>
> Depends on "ppc/fpu: Add generic FPU api similar to x86"
>
> v2:
> - Got rid of macro switch for PPC as header file with same
> name as x86 is added by previous patch in the series
>
> Signed-off-by: Anson Jacob <Anson.Jacob@amd.com>
> CC: Christoph Hellwig <hch@infradead.org>
> CC: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
> CC: Harry Wentland <harry.wentland@amd.com>
> CC: Christian König <christian.koenig@amd.com>
Looks good in general, but question is what about other architectures
like ARM?
Regards,
Christian.
> ---
> drivers/gpu/drm/amd/display/dc/os_types.h | 29 -----------------------
> 1 file changed, 29 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/display/dc/os_types.h b/drivers/gpu/drm/amd/display/dc/os_types.h
> index 126c2f3a4dd3..47ef434f93d8 100644
> --- a/drivers/gpu/drm/amd/display/dc/os_types.h
> +++ b/drivers/gpu/drm/amd/display/dc/os_types.h
> @@ -51,38 +51,9 @@
> #define dm_error(fmt, ...) DRM_ERROR(fmt, ##__VA_ARGS__)
>
> #if defined(CONFIG_DRM_AMD_DC_DCN)
> -#if defined(CONFIG_X86)
> #include <asm/fpu/api.h>
> #define DC_FP_START() kernel_fpu_begin()
> #define DC_FP_END() kernel_fpu_end()
> -#elif defined(CONFIG_PPC64)
> -#include <asm/switch_to.h>
> -#include <asm/cputable.h>
> -#define DC_FP_START() { \
> - if (cpu_has_feature(CPU_FTR_VSX_COMP)) { \
> - preempt_disable(); \
> - enable_kernel_vsx(); \
> - } else if (cpu_has_feature(CPU_FTR_ALTIVEC_COMP)) { \
> - preempt_disable(); \
> - enable_kernel_altivec(); \
> - } else if (!cpu_has_feature(CPU_FTR_FPU_UNAVAILABLE)) { \
> - preempt_disable(); \
> - enable_kernel_fp(); \
> - } \
> -}
> -#define DC_FP_END() { \
> - if (cpu_has_feature(CPU_FTR_VSX_COMP)) { \
> - disable_kernel_vsx(); \
> - preempt_enable(); \
> - } else if (cpu_has_feature(CPU_FTR_ALTIVEC_COMP)) { \
> - disable_kernel_altivec(); \
> - preempt_enable(); \
> - } else if (!cpu_has_feature(CPU_FTR_FPU_UNAVAILABLE)) { \
> - disable_kernel_fp(); \
> - preempt_enable(); \
> - } \
> -}
> -#endif
> #endif
>
> /*
next prev parent reply other threads:[~2021-07-21 6:30 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-21 4:47 [RFC v2 0/2] PPC: Add generic FPU api similar to x86 Anson Jacob
2021-07-21 4:48 ` [RFC v2 1/2] ppc/fpu: " Anson Jacob
2021-07-21 6:58 ` Christoph Hellwig
2021-07-21 4:48 ` [RFC v2 2/2] drm/amd/display: Use PPC FPU functions Anson Jacob
2021-07-21 6:29 ` Christian König [this message]
2021-07-21 6:51 ` Christoph Hellwig
2021-07-21 9:24 ` Christian König
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