From: Jungo Lin <jungo.lin-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
To: Tomasz Figa <tfiga-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
"Sean Cheng (鄭昇弘)"
<sean.cheng-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>,
"Frederic Chen (陳俊元)"
<frederic.chen-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>,
"Rynn Wu (吳育恩)" <rynn.wu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>,
srv_heupstream
<srv_heupstream-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>,
"Rob Herring" <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
"Ryan Yu (余孟修)" <ryan.yu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>,
"Frankie Chiu (邱文凱)"
<frankie.chiu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>,
"Hans Verkuil" <hverkuil-qWit8jRvyhVmR6Xm/wNWPw@public.gmane.org>,
ddavenport-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org,
"Sj Huang" <sj.huang-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>,
"moderated list:ARM/Mediatek SoC support"
<linux-mediatek-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>,
"Laurent Pinchart"
<laurent.pinchart-ryLnwIuWjnjg/C1BVhZhaw@public.gmane.org>,
"Matthias Brugger"
<matthias.bgg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
"Mauro Carvalho Chehab"
<mchehab-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
list-Y9sIeH5OGRo@public.gmane.org
Subject: Re: [RFC, v3 9/9] media: platform: Add Mediatek ISP P1 shared memory device
Date: Tue, 23 Jul 2019 16:21:57 +0800 [thread overview]
Message-ID: <1563870117.1212.455.camel@mtksdccf07> (raw)
In-Reply-To: <CAAFQd5AaNFpMGCVJREY85n8UetEwd99TOka8-ECoLzMbMkos_g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
Hi, Tomasz:
On Tue, 2019-07-23 at 16:20 +0900, Tomasz Figa wrote:
> Hi Jungo,
>
> On Fri, Jul 5, 2019 at 4:59 PM Jungo Lin <jungo.lin-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org> wrote:
> >
> > Hi Tomasz:
> >
> > On Fri, 2019-07-05 at 13:22 +0900, Tomasz Figa wrote:
> > > Hi Jungo,
> > >
> > > On Fri, Jul 5, 2019 at 12:33 PM Jungo Lin <jungo.lin-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org> wrote:
> > > >
> > > > Hi Tomasz,
> >
> > [snip]
> >
> > > > After applying your suggestion in SCP device driver, we could remove
> > > > mtk_cam-smem.h/c. Currently, we use dma_alloc_coherent with SCP device
> > > > to get SCP address. We could touch the buffer with this SCP address in
> > > > SCP processor.
> > > >
> > > > After that, we use dma_map_page_attrs with P1 device which supports
> > > > IOMMU domain to get IOVA address. For this address, we will assign
> > > > it to our ISP HW device to proceed.
> > > >
> > > > Below is the snippet for ISP P1 compose buffer initialization.
> > > >
> > > > ptr = dma_alloc_coherent(p1_dev->cam_dev.smem_dev,
> > > > MAX_COMPOSER_SIZE, &addr, GFP_KERNEL);
> > > > if (!ptr) {
> > > > dev_err(dev, "failed to allocate compose memory\n");
> > > > return -ENOMEM;
> > > > }
> > > > isp_ctx->scp_mem_pa = addr;
> > >
> > > addr contains a DMA address, not a physical address. Could we call it
> > > scp_mem_dma instead?
> > >
> > > > dev_dbg(dev, "scp addr:%pad\n", &addr);
> > > >
> > > > /* get iova address */
> > > > addr = dma_map_page_attrs(dev, phys_to_page(addr), 0,
> > >
> > > addr is a DMA address, so phys_to_page() can't be called on it. The
> > > simplest thing here would be to use dma_map_single() with ptr as the
> > > CPU address expected.
> > >
> >
> > We have changed to use ma_map_single() with ptr, but encounter IOMMU
> > error. From the debug log of iommu_dma_map_page[3], we got
> > 0x0000000054800000 instead of expected address: 0x0000000050800000[2].
> > There is a address offset(0x4000000). If we change to use
> > dma_map_page_attrs with phys_to_page(addr), the address is correct as we
> > expected[2]. Do you have any suggestion on this issue? Do we miss
> > something?
>
> Sorry for the late reply. Could you show me the code changes you made
> to use dma_map_single()? It would sound like the virtual address
> passed to dma_map_single() isn't correct.
>
> Best regards,
> Tomasz
>
Please check the below code snippet in today's testing.
p1_dev->cam_dev.smem_dev = &p1_dev->scp_pdev->dev;
ptr = dma_alloc_coherent(p1_dev->cam_dev.smem_dev,
MTK_ISP_COMPOSER_MEM_SIZE, &addr, GFP_KERNEL);
if (!ptr) {
dev_err(dev, "failed to allocate compose memory\n");
return -ENOMEM;
}
p1_dev->composer_scp_addr = addr;
p1_dev->composer_virt_addr = ptr;
dev_info(dev, "scp addr:%pad va:%pK\n", &addr, ptr);
/* get iova address */
addr = dma_map_single(dev, ptr, MTK_ISP_COMPOSER_MEM_SIZE,
DMA_BIDIRECTIONAL);
if (dma_mapping_error(dev, addr)) {
dma_free_coherent(p1_dev->cam_dev.smem_dev,
MTK_ISP_COMPOSER_MEM_SIZE,
ptr, p1_dev->composer_scp_addr);
dev_err(dev, "Failed to map scp iova\n");
ret = -ENOMEM;
goto fail_free_mem;
}
p1_dev->composer_iova = addr;
dev_info(dev, "scp iova addr:%pad\n", &addr);
Moreover, below is extracted log[2].
We guess the virtual address which is returned by dma_alloc_coherent
function is not valid kernel logical address. It is actually returned by
memremap() in dma_init_coherent_memory(). Moreover, dma_map_single()
will call virt_to_page() function. For virt_to_page function, it
requires a logical address[1].
[1]https://www.oreilly.com/library/view/linux-device-drivers/0596005903/ch15.html
[2]
322 [ 1.238269] mtk-cam-p1 1a006000.camisp: scp
addr:0x0000000052000000 va:00000000a3adc471
323 [ 1.239582] mtk-cam-p1 1a006000.camisp: scp iova
addr:0x00000000fde00000
7716 [ 1.238963] mtk-cam-p1 1a006000.camisp: scp
addr:0x0000000052000000 va:0000000042ec580f
7717 [ 1.240276] mtk-cam-p1 1a006000.camisp: scp iova
addr:0x00000000fde00000
15088 [ 1.239309] mtk-cam-p1 1a006000.camisp: scp
addr:0x0000000052000000 va:000000005e5b3462
15089 [ 1.240626] mtk-cam-p1 1a006000.camisp: scp iova
addr:0x00000000fde00000
Best regards,
Jungo
> >
> > [1]
> > [ 1.344786] __dma_alloc_from_coherent: 0x800000 PAGE_SHIFT:12
> > device_base:0x0000000050000000 dma:0x0000000050800000
> > virt_base:ffffff8014000000 va:ffffff8014800000
> >
> > [ 1.346890] mtk-cam 1a000000.camisp: scp addr:0x0000000050800000
> > va:ffffff8014800000
> >
> > [ 1.347864] iommu_dma_map_page:0x0000000054800000 offset:0
> > [ 1.348562] mtk-cam 1a000000.camisp: iova addr:0x00000000fde00000
> >
> > [2]
> > [ 1.346738] __dma_alloc_from_coherent: 0x800000 PAGE_SHIFT:12
> > device_base:0x0000000050000000 dma:0x0000000050800000
> > virt_base:ffffff8014000000 va:ffffff8014800000
> > [ 1.348841] mtk-cam 1a000000.camisp: scp addr:0x0000000050800000
> > va:ffffff8014800000
> > [ 1.349816] iommu_dma_map_page:0x0000000050800000 offset:0
> > [ 1.350514] mtk-cam 1a000000.camisp: iova addr:0x00000000fde00000
> >
> >
> > [3]
> > dma_addr_t iommu_dma_map_page(struct device *dev, struct page *page,
> > unsigned long offset, size_t size, int prot)
> > {
> > phys_addr_t phys = page_to_phys(page);
> > pr_err("iommu_dma_map_page:%pa offset:%lu\n", &phys, offset);
> >
> > return __iommu_dma_map(dev, page_to_phys(page) + offset, size, prot,
> > iommu_get_dma_domain(dev));
> > }
> >
> > [snip]
> >
> > Best regards,
> >
> > Jungo
> >
>
> _______________________________________________
> Linux-mediatek mailing list
> Linux-mediatek-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
> http://lists.infradead.org/mailman/listinfo/linux-mediatek
next prev parent reply other threads:[~2019-07-23 8:21 UTC|newest]
Thread overview: 131+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <jungo.lin@mediatek.com>
2019-03-28 9:56 ` [RFC V1 00/12] meida: platform: mtk-isp: Add Mediatek ISP Pass 1 driver Jungo Lin
2019-03-28 9:56 ` [RFC V1 01/12] dt-bindings: mt8183: Add binding for ISP Pass 1 reserved memory Jungo Lin
2019-03-28 9:56 ` [RFC V1 02/12] dts: arm64: mt8183: Add ISP Pass 1 shared memory node Jungo Lin
2019-03-28 9:56 ` [RFC V1 03/12] dt-bindings: mt8183: Added cam-smem dt-bindings Jungo Lin
2019-03-28 9:56 ` [RFC V1 04/12] dt-bindings: mt8183: Added camera ISP Pass 1 Jungo Lin
2019-03-28 9:56 ` [RFC V1 05/12] dts: arm64: mt8183: Add ISP Pass 1 nodes Jungo Lin
2019-03-28 9:56 ` [RFC V1 08/12] media: platform: Add Mediatek ISP P1 private control Jungo Lin
2019-03-28 9:56 ` [RFC V1 09/12] media: platform: Add Mediatek ISP P1 V4L2 functions Jungo Lin
2019-03-28 9:56 ` [RFC V1 10/12] media: platform: Add Mediatek ISP P1 device driver Jungo Lin
[not found] ` <1553767007-11909-1-git-send-email-jungo.lin-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
2019-03-28 9:56 ` [RFC V1 06/12] media: platform: Add Mediatek ISP Pass 1 driver Kconfig Jungo Lin
2019-03-28 9:56 ` [RFC V1 07/12] media: platform: Add Mediatek ISP P1 image & meta formats Jungo Lin
2019-03-28 9:56 ` [RFC V1 11/12] media: platform: Add Mediatek ISP P1 SCP communication Jungo Lin
2019-03-28 9:56 ` [RFC V1 12/12] media: platform: Add Mediatek ISP P1 shared memory driver Jungo Lin
2019-06-11 3:53 ` [RFC, V3 0/9] media: platform: mtk-isp: Add Mediatek ISP Pass 1 driver Jungo Lin
2019-06-11 3:53 ` [RFC,v3 1/9] dt-bindings: mt8183: Added camera ISP Pass 1 Jungo Lin
2019-06-11 3:53 ` [RFC,v3 2/9] dts: arm64: mt8183: Add ISP Pass 1 nodes Jungo Lin
2019-06-11 3:53 ` [RFC,v3 3/9] media: platform: Add Mediatek ISP Pass 1 driver Kconfig Jungo Lin
2019-06-11 3:53 ` [RFC, v3 4/9] media: platform: Add Mediatek ISP P1 image & meta formats Jungo Lin
2019-06-11 3:53 ` [RFC,v3 5/9] media: platform: Add Mediatek ISP P1 V4L2 control Jungo Lin
2019-07-01 5:50 ` Tomasz Figa
2019-07-02 11:34 ` Jungo Lin
2019-06-11 3:53 ` [RFC,v3 6/9] media: platform: Add Mediatek ISP P1 V4L2 functions Jungo Lin
2019-07-10 9:54 ` Tomasz Figa
2019-07-18 4:39 ` Jungo Lin
2019-07-23 10:21 ` Tomasz Figa
2019-07-24 4:31 ` Jungo Lin
2019-07-26 5:49 ` Tomasz Figa
2019-07-29 1:18 ` Jungo Lin
2019-07-29 10:04 ` Tomasz Figa
2019-07-30 1:44 ` Jungo Lin
2019-08-05 9:59 ` Tomasz Figa
2019-06-11 3:53 ` [RFC,v3 7/9] media: platform: Add Mediatek ISP P1 device driver Jungo Lin
2019-07-10 9:56 ` Tomasz Figa
2019-07-20 9:58 ` Jungo Lin
2019-07-25 9:23 ` Tomasz Figa
2019-07-26 7:23 ` Jungo Lin
2019-08-06 9:47 ` Tomasz Figa
2019-08-07 2:11 ` Jungo Lin
2019-08-07 13:25 ` Tomasz Figa
2019-06-11 3:53 ` [RFC,v3 8/9] media: platform: Add Mediatek ISP P1 SCP communication Jungo Lin
[not found] ` <20190611035344.29814-9-jungo.lin-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
2019-07-10 9:58 ` Tomasz Figa
2019-07-21 2:18 ` Jungo Lin
2019-07-25 10:56 ` [RFC, v3 " Tomasz Figa
2019-07-26 8:07 ` [RFC,v3 " Jungo Lin
2019-06-11 3:53 ` [RFC, v3 9/9] media: platform: Add Mediatek ISP P1 shared memory device Jungo Lin
2019-07-01 7:25 ` [RFC,v3 " Tomasz Figa
2019-07-05 3:33 ` Jungo Lin
2019-07-05 4:22 ` [RFC, v3 " Tomasz Figa
[not found] ` <CAAFQd5BaTQ-Q7gsE0X+d4_81OZq9WHaCYkmALt7_4A1JFo=_8g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2019-07-05 5:44 ` [RFC,v3 " Jungo Lin
2019-07-05 7:59 ` Jungo Lin
2019-07-23 7:20 ` [RFC, v3 " Tomasz Figa
[not found] ` <CAAFQd5AaNFpMGCVJREY85n8UetEwd99TOka8-ECoLzMbMkos_g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2019-07-23 8:21 ` Jungo Lin [this message]
2019-07-26 5:15 ` Tomasz Figa
[not found] ` <CAAFQd5Bh80N+cMhz=eyHUGJLaE5uuypOawQvHrTgGSMDvmcpLA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2019-07-26 7:41 ` Christoph Hellwig
2019-07-26 7:42 ` Tomasz Figa
[not found] ` <CAAFQd5CXwRm-3jD+rfNNDNLH=gT_i0QYSAG3XBo3SJnPTY56_w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2019-07-26 11:04 ` Robin Murphy
[not found] ` <4460bc91-352a-7f3a-cbed-1b95e743ca8c-5wv7dgnIgG8@public.gmane.org>
2019-07-26 11:59 ` Jungo Lin
2019-07-26 14:04 ` Tomasz Figa
[not found] <Jungo Lin <jungo.lin@mediatek.com>
2019-04-02 10:04 ` [PATCH v1] media: media_device_enum_links32: fix missing reserved field copy Jungo Lin
2019-04-02 11:33 ` Laurent Pinchart
2019-04-03 0:30 ` Jungo Lin
2019-04-03 1:44 ` [PATCH] media: media_device_enum_links32: clean a reserved field Jungo Lin
2019-05-10 1:57 ` [RFC, V2, 00/11] meida: platform: mtk-isp: Add Mediatek ISP Pass 1 driver Jungo Lin
2019-05-10 1:57 ` [RFC, V2, 01/11] dt-bindings: mt8183: Add binding for ISP Pass 1 reserved memory Jungo Lin
2019-05-14 19:50 ` [RFC,V2,01/11] " Rob Herring
2019-05-15 13:02 ` Jungo Lin
2019-05-10 1:57 ` [RFC,V2,02/11] dts: arm64: mt8183: Add ISP Pass 1 shared memory node Jungo Lin
2019-05-10 1:57 ` [RFC,V2,03/11] dt-bindings: mt8183: Added camera ISP Pass 1 Jungo Lin
2019-05-14 19:54 ` Rob Herring
2019-05-16 6:12 ` Jungo Lin
2019-05-10 1:57 ` [RFC,V2,04/11] dts: arm64: mt8183: Add ISP Pass 1 nodes Jungo Lin
2019-05-10 1:57 ` [RFC, V2, 05/11] media: platform: Add Mediatek ISP Pass 1 driver Kconfig Jungo Lin
2019-05-10 1:57 ` [RFC, V2, 06/11] media: platform: Add Mediatek ISP P1 image & meta formats Jungo Lin
2019-05-13 8:35 ` Hans Verkuil
2019-05-15 12:49 ` Jungo Lin
2019-05-10 1:58 ` [RFC,V2,07/11] media: platform: Add Mediatek ISP P1 private control Jungo Lin
2019-05-13 8:46 ` Hans Verkuil
[not found] ` <49a8ba54-aba4-1915-6732-987a58e8bd3c-qWit8jRvyhVmR6Xm/wNWPw@public.gmane.org>
2019-05-14 6:23 ` Jungo Lin
2019-10-02 10:55 ` Sakari Ailus
2019-10-02 11:02 ` Sakari Ailus
[not found] ` <Jungo Lin <jungo.lin-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
2019-05-10 1:58 ` [RFC,V2,08/11] media: platform: Add Mediatek ISP P1 V4L2 functions Jungo Lin
2019-05-24 18:49 ` Drew Davenport
2019-05-28 1:00 ` Jungo Lin
2019-05-10 1:58 ` [RFC,V2,09/11] media: platform: Add Mediatek ISP P1 device driver Jungo Lin
2019-05-24 21:19 ` [RFC, V2, 09/11] " Drew Davenport
2019-05-27 13:07 ` Jungo Lin
2019-05-10 1:58 ` [RFC, V2, 10/11] media: platform: Add Mediatek ISP P1 SCP communication Jungo Lin
2019-05-10 1:58 ` [RFC, V2, 11/11] media: platform: Add Mediatek ISP P1 shared memory device Jungo Lin
2019-08-07 12:47 ` [RFC, v4, 0/4] media: platform: mtk-isp: Add Mediatek ISP Pass 1 driver Jungo Lin
2019-08-07 12:48 ` [RFC,v4,1/4] media: dt-bindings: mt8183: Added camera ISP Pass 1 Jungo Lin
2019-08-21 19:47 ` Rob Herring
2019-08-22 12:47 ` Jungo Lin
[not found] ` <20190807124803.29884-2-jungo.lin-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
2019-08-21 20:17 ` Rob Herring
2019-08-22 12:48 ` Jungo Lin
2019-08-07 12:48 ` [RFC,v4,2/4] dts: arm64: mt8183: Add ISP Pass 1 nodes Jungo Lin
2019-08-07 12:48 ` [RFC, v4, 3/4] media: platform: Add Mediatek ISP P1 image & meta formats Jungo Lin
2019-08-07 12:48 ` [RFC,v4,4/4] media: platform: Add Mediatek ISP P1 V4L2 device driver Jungo Lin
2019-09-02 7:51 ` [RFC, v5, 0/5] media: platform: mtk-isp: Add Mediatek ISP Pass 1 driver Jungo Lin
2019-09-02 7:51 ` [RFC,v5, 1/5] media: dt-bindings: mt8183: Added camera ISP Pass 1 Jungo Lin
2019-09-02 15:17 ` [RFC, v5, " Rob Herring
2019-09-02 7:51 ` [RFC,v5, 2/5] dts: arm64: mt8183: Add ISP Pass 1 nodes Jungo Lin
2019-09-02 7:51 ` [RFC,v5, 3/5] media: videodev2.h: Add new boottime timestamp type Jungo Lin
2019-09-02 7:51 ` [RFC, v5, 4/5] media: pixfmt: Add Mediatek ISP P1 image & meta formats Jungo Lin
2019-09-02 7:51 ` [RFC, v5, 5/5] media: platform: Add Mediatek ISP P1 V4L2 device driver Jungo Lin
2019-12-19 5:49 ` [v6, 0/5] media: media: platform: mtk-isp: Add Mediatek ISP Pass 1 driver Jungo Lin
2019-12-19 5:49 ` [v6, 1/5] media: dt-bindings: mt8183: Added camera ISP Pass 1 Jungo Lin
2020-03-31 15:34 ` Helen Koike
2020-04-10 10:04 ` Jungo Lin
2019-12-19 5:49 ` [v6, 2/5] dts: arm64: mt8183: Add ISP Pass 1 nodes Jungo Lin
2019-12-19 5:49 ` [v6, 3/5] media: videodev2.h: Add new boottime timestamp type Jungo Lin
2020-01-07 14:10 ` Hans Verkuil
2020-01-10 10:08 ` Jungo Lin
2019-12-19 5:49 ` [v6, 4/5] media: platform: Add Mediatek ISP P1 image & meta formats Jungo Lin
2020-04-03 2:30 ` Laurent Pinchart
2020-04-10 10:00 ` Jungo Lin
2019-12-19 5:49 ` [v6, 5/5] media: platform: Add Mediatek ISP P1 V4L2 device driver Jungo Lin
2020-01-23 13:59 ` Hans Verkuil
2020-01-28 2:13 ` Jungo Lin
2020-03-31 15:34 ` Helen Koike
2020-04-09 2:05 ` Jungo Lin
2020-04-14 12:25 ` Helen Koike
[not found] ` <b2c30e560e9b4ec488957ca62bae09fe@mtkmbs01n2.mediatek.inc>
2020-05-04 12:27 ` Jungo Lin
2020-05-05 15:38 ` Helen Koike
2020-04-02 16:45 ` Dafna Hirschfeld
2020-04-09 2:49 ` Jungo Lin
2020-03-31 15:34 ` [v6, 0/5] media: media: platform: mtk-isp: Add Mediatek ISP Pass 1 driver Helen Koike
2020-04-10 10:32 ` Jungo Lin
2020-04-14 12:25 ` Helen Koike
[not found] ` <1fd3615eb18f48ada186bfe228fc907b@mtkmbs01n2.mediatek.inc>
2020-05-04 12:40 ` Jungo Lin
2020-05-05 15:30 ` Helen Koike
2020-05-05 16:18 ` Tomasz Figa
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