From: Keith Zhao <keith.zhao@starfivetech.com>
To: Shengyu Qu <wiagn233@outlook.com>,
<dri-devel@lists.freedesktop.org>, <devicetree@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <linux-riscv@lists.infradead.org>,
<linux-media@vger.kernel.org>, <linaro-mm-sig@lists.linaro.org>
Cc: David Airlie <airlied@gmail.com>, Daniel Vetter <daniel@ffwll.ch>,
"Rob Herring" <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
"Emil Renner Berthing" <kernel@esmil.dk>,
Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
Maxime Ripard <mripard@kernel.org>,
Thomas Zimmermann <tzimmermann@suse.de>,
Philipp Zabel <p.zabel@pengutronix.de>,
Sumit Semwal <sumit.semwal@linaro.org>,
<christian.koenig@amd.com>,
Bjorn Andersson <andersson@kernel.org>,
"Heiko Stuebner" <heiko@sntech.de>,
Shawn Guo <shawnguo@kernel.org>, Jagan Teki <jagan@edgeble.ai>,
Chris Morgan <macromorgan@hotmail.com>,
Jack Zhu <jack.zhu@starfivetech.com>,
Shengyang Chen <shengyang.chen@starfivetech.com>,
Changhuang Liang <changhuang.liang@starfivetech.com>
Subject: Re: [PATCH 7/9] drm/verisilicon: Add drm plane funcs
Date: Tue, 11 Jul 2023 09:44:15 +0800 [thread overview]
Message-ID: <560ca37f-74c3-8f36-c118-eb17f92e20b3@starfivetech.com> (raw)
In-Reply-To: <TY3P286MB261191B29FB384110094181C9830A@TY3P286MB2611.JPNP286.PROD.OUTLOOK.COM>
On 2023/7/11 0:46, Shengyu Qu wrote:
> Hello Keith,
>> +
>> +static void vs_plane_atomic_update(struct drm_plane *plane,
>> + struct drm_atomic_state *state)
>> +{
>> + struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
>> + plane);
>> + unsigned char i, num_planes;
>> + struct drm_framebuffer *fb;
>> + struct vs_plane *vs_plane = to_vs_plane(plane);
>> + //struct drm_plane_state *state = plane->state;
>> + struct vs_crtc *vs_crtc = to_vs_crtc(new_state->crtc);
>> + struct vs_plane_state *plane_state = to_vs_plane_state(new_state);
>> + //struct drm_format_name_buf *name = &plane_state->status.format_name;
>> +
>> + if (!new_state->fb || !new_state->crtc)
>> + return;
>> +
>> + fb = new_state->fb;
>> +
>> + num_planes = vs_get_plane_number(fb);
>> +
>> + for (i = 0; i < num_planes; i++) {
>> + struct vs_gem_object *vs_obj;
>> +
>> + vs_obj = vs_fb_get_gem_obj(fb, i);
>> + vs_plane->dma_addr[i] = vs_obj->iova + fb->offsets[i];
>
> There is a dcache flush operation here in downstream driver. Is that a cache coherence problem?
>
> Best regards,
>
> Shengyu
>
>> + }
>> +
>> + plane_state->status.src = drm_plane_state_src(new_state);
>> + plane_state->status.dest = drm_plane_state_dest(new_state);
>> +
>> + vs_plane->funcs->update(vs_crtc->dev, vs_plane, plane, state);
>> +}
>>yes , You can find that the current situation is very professional.
This problem exists at present, but the dma interface is not perfect at now,
and the dma_sync_single_for_device interface needs to be implemented later.
I will consider repairing this problem in the form of patch
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next prev parent reply other threads:[~2023-07-11 1:45 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-02 7:40 [PATCH 0/9] Add DRM driver for StarFive SoC JH7110 Keith Zhao
2023-06-02 7:40 ` [PATCH 1/9] dt-bindings: display: Add yamls for JH7110 display subsystem Keith Zhao
2023-06-02 18:21 ` Conor Dooley
2023-06-06 18:41 ` Shengyu Qu
2023-06-06 22:22 ` Heiko Stübner
2023-06-06 22:37 ` Conor Dooley
2023-06-07 6:41 ` Maxime Ripard
2023-06-07 8:02 ` Keith Zhao
2023-06-07 8:40 ` Heiko Stübner
2023-06-07 7:35 ` Krzysztof Kozlowski
2023-06-02 7:40 ` [PATCH 2/9] riscv: dts: starfive: jh7110: add dc&hdmi controller node Keith Zhao
2023-06-07 7:38 ` Krzysztof Kozlowski
2023-06-02 7:40 ` [PATCH 3/9] drm/verisilicon: Add basic drm driver Keith Zhao
2023-06-07 8:53 ` Lucas Stach
2023-07-25 3:12 ` Keith Zhao
2023-07-25 11:23 ` Keith Zhao
2023-06-19 12:59 ` Thomas Zimmermann
2023-07-07 18:09 ` Nicolas Dufresne
2023-07-08 19:11 ` Thomas Zimmermann
2023-07-13 15:14 ` Nicolas Dufresne
2023-07-03 18:42 ` Shengyu Qu
2023-07-04 6:09 ` Keith Zhao
2023-06-02 7:40 ` [PATCH 4/9] drm/verisilicon: Add gem driver for JH7110 SoC Keith Zhao
2023-06-19 13:18 ` Thomas Zimmermann
2023-07-20 10:00 ` Keith Zhao
2023-06-19 14:22 ` Thomas Zimmermann
2023-06-21 10:44 ` Thomas Zimmermann
2023-06-02 7:40 ` [PATCH 5/9] drm/verisilicon: Add mode config funcs Keith Zhao
2023-06-21 11:04 ` Thomas Zimmermann
2023-07-21 9:06 ` Keith Zhao
2023-06-02 7:40 ` [PATCH 6/9] drm/verisilicon: Add drm crtc funcs Keith Zhao
2023-06-30 11:55 ` Thomas Zimmermann
2023-07-21 11:57 ` Keith Zhao
2023-07-21 12:32 ` Sam Ravnborg
2023-06-02 7:40 ` [PATCH 7/9] drm/verisilicon: Add drm plane funcs Keith Zhao
2023-06-30 12:14 ` Thomas Zimmermann
2023-07-10 16:46 ` Shengyu Qu
2023-07-11 1:44 ` Keith Zhao [this message]
2023-06-02 7:40 ` [PATCH 8/9] drm/verisilicon: Add verisilicon dc controller driver Keith Zhao
2023-06-30 12:36 ` Thomas Zimmermann
2023-06-02 7:40 ` [PATCH 9/9] drm/verisilicon: Add starfive hdmi driver Keith Zhao
2023-06-05 8:08 ` Philipp Zabel
2023-06-05 9:56 ` Maxime Ripard
2023-06-23 2:38 ` Hoegeun Kwon
2023-06-26 5:34 ` Keith Zhao
2023-06-22 18:19 ` [PATCH 0/9] Add DRM driver for StarFive SoC JH7110 Palmer Dabbelt
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