2020-02-21 05:57:17

by Tian Tao

[permalink] [raw]
Subject: [PATCH] drm/hisilicon: Fixed pcie resource conflict using the general API

the kernel provide the drm_fb_helper_remove_conflicting_pci_framebuffer
to remvoe the pcie resource conflict,there is no need to driver it again.

Signed-off-by: Tian Tao <[email protected]>
---
drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 22 +++++-----------------
1 file changed, 5 insertions(+), 17 deletions(-)

diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
index 7ebe831..0f7dba7 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
@@ -47,22 +47,6 @@ static irqreturn_t hibmc_drm_interrupt(int irq, void *arg)
return IRQ_HANDLED;
}

-static void hibmc_remove_framebuffers(struct pci_dev *pdev)
-{
- struct apertures_struct *ap;
-
- ap = alloc_apertures(1);
- if (!ap)
- return;
-
- ap->ranges[0].base = pci_resource_start(pdev, 0);
- ap->ranges[0].size = pci_resource_len(pdev, 0);
-
- drm_fb_helper_remove_conflicting_framebuffers(ap, "hibmcdrmfb", false);
-
- kfree(ap);
-}
-
static struct drm_driver hibmc_driver = {
.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
.fops = &hibmc_fops,
@@ -343,7 +327,11 @@ static int hibmc_pci_probe(struct pci_dev *pdev,
struct drm_device *dev;
int ret;

- hibmc_remove_framebuffers(pdev);
+ ret = drm_fb_helper_remove_conflicting_pci_framebuffers(pdev,
+ "hibmcdrmfb");
+ if (ret)
+ return ret;
+

dev = drm_dev_alloc(&hibmc_driver, &pdev->dev);
if (IS_ERR(dev)) {
--
2.7.4


2020-02-21 08:53:03

by Thomas Zimmermann

[permalink] [raw]
Subject: Re: [PATCH] drm/hisilicon: Fixed pcie resource conflict using the general API

Hi

Am 21.02.20 um 08:06 schrieb Xinliang Liu:
> Hi tao,
> Are you sending a wrong patch?
> Function hibmc_remove_framebuffers is added by your prior reviewing patch.
> Please send patch based on drm-misc-next branch[1] or linux-next.

There's drm_fb_helper_remove_conflicting_pci_framebuffers() which
already implements the functionality. I asked to try using it instead of
creating an own implementation.

Best regards
Thomas

>
> Thanks,
> -Xinliang
>
> [1] https://anongit.freedesktop.org/git/drm-misc.git
>
> On Fri, 21 Feb 2020 at 13:56, Tian Tao <[email protected]
> <mailto:[email protected]>> wrote:
>
> the kernel provide the drm_fb_helper_remove_conflicting_pci_framebuffer
> to remvoe the pcie resource conflict,there is no need to driver it
> again.
>
> Signed-off-by: Tian Tao <[email protected]
> <mailto:[email protected]>>
> ---
>  drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 22
> +++++-----------------
>  1 file changed, 5 insertions(+), 17 deletions(-)
>
> diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
> b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
> index 7ebe831..0f7dba7 100644
> --- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
> +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
> @@ -47,22 +47,6 @@ static irqreturn_t hibmc_drm_interrupt(int irq,
> void *arg)
>         return IRQ_HANDLED;
>  }
>
> -static void hibmc_remove_framebuffers(struct pci_dev *pdev)
> -{
> -       struct apertures_struct *ap;
> -
> -       ap = alloc_apertures(1);
> -       if (!ap)
> -               return;
> -
> -       ap->ranges[0].base = pci_resource_start(pdev, 0);
> -       ap->ranges[0].size = pci_resource_len(pdev, 0);
> -
> -       drm_fb_helper_remove_conflicting_framebuffers(ap,
> "hibmcdrmfb", false);
> -
> -       kfree(ap);
> -}
> -
>  static struct drm_driver hibmc_driver = {
>         .driver_features        = DRIVER_GEM | DRIVER_MODESET |
> DRIVER_ATOMIC,
>         .fops                   = &hibmc_fops,
> @@ -343,7 +327,11 @@ static int hibmc_pci_probe(struct pci_dev *pdev,
>         struct drm_device *dev;
>         int ret;
>
> -       hibmc_remove_framebuffers(pdev);
> +       ret = drm_fb_helper_remove_conflicting_pci_framebuffers(pdev,
> +                                                             
>  "hibmcdrmfb");
> +       if (ret)
> +               return ret;
> +
>
>         dev = drm_dev_alloc(&hibmc_driver, &pdev->dev);
>         if (IS_ERR(dev)) {
> --
> 2.7.4
>

--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Felix Imendörffer


Attachments:
signature.asc (499.00 B)
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2020-02-21 09:13:35

by Thomas Zimmermann

[permalink] [raw]
Subject: Re: [PATCH] drm/hisilicon: Fixed pcie resource conflict using the general API

Hi

Am 21.02.20 um 06:55 schrieb Tian Tao:
> the kernel provide the drm_fb_helper_remove_conflicting_pci_framebuffer
> to remvoe the pcie resource conflict,there is no need to driver it again.
>
> Signed-off-by: Tian Tao <[email protected]>
> ---
> drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 22 +++++-----------------
> 1 file changed, 5 insertions(+), 17 deletions(-)
>
> diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
> index 7ebe831..0f7dba7 100644
> --- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
> +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
> @@ -47,22 +47,6 @@ static irqreturn_t hibmc_drm_interrupt(int irq, void *arg)
> return IRQ_HANDLED;
> }
>
> -static void hibmc_remove_framebuffers(struct pci_dev *pdev)
> -{
> - struct apertures_struct *ap;
> -
> - ap = alloc_apertures(1);
> - if (!ap)
> - return;
> -
> - ap->ranges[0].base = pci_resource_start(pdev, 0);
> - ap->ranges[0].size = pci_resource_len(pdev, 0);
> -
> - drm_fb_helper_remove_conflicting_framebuffers(ap, "hibmcdrmfb", false);
> -
> - kfree(ap);
> -}
> -
> static struct drm_driver hibmc_driver = {
> .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
> .fops = &hibmc_fops,
> @@ -343,7 +327,11 @@ static int hibmc_pci_probe(struct pci_dev *pdev,
> struct drm_device *dev;
> int ret;
>
> - hibmc_remove_framebuffers(pdev);
> + ret = drm_fb_helper_remove_conflicting_pci_framebuffers(pdev,
> + "hibmcdrmfb");
> + if (ret)
> + return ret;
> +
>

Only one empty line please. With this change

Acked-by: Thomas Zimmermann <[email protected]>


> dev = drm_dev_alloc(&hibmc_driver, &pdev->dev);
> if (IS_ERR(dev)) {
>

--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Felix Imendörffer


Attachments:
signature.asc (499.00 B)
OpenPGP digital signature

2020-02-21 09:14:35

by tiantao (H)

[permalink] [raw]
Subject: Re: [PATCH] drm/hisilicon: Fixed pcie resource conflict using the general API

Sorry,my mistake. I sent the wrong patch, please ignore the patch below

在 2020/2/21 16:52, Thomas Zimmermann 写道:
> Hi
>
> Am 21.02.20 um 08:06 schrieb Xinliang Liu:
>> Hi tao,
>> Are you sending a wrong patch?
>> Function hibmc_remove_framebuffers is added by your prior reviewing patch.
>> Please send patch based on drm-misc-next branch[1] or linux-next.
>
> There's drm_fb_helper_remove_conflicting_pci_framebuffers() which
> already implements the functionality. I asked to try using it instead of
> creating an own implementation.
>
> Best regards
> Thomas
>
>>
>> Thanks,
>> -Xinliang
>>
>> [1] https://anongit.freedesktop.org/git/drm-misc.git
>>
>> On Fri, 21 Feb 2020 at 13:56, Tian Tao <[email protected]
>> <mailto:[email protected]>> wrote:
>>
>> the kernel provide the drm_fb_helper_remove_conflicting_pci_framebuffer
>> to remvoe the pcie resource conflict,there is no need to driver it
>> again.
>>
>> Signed-off-by: Tian Tao <[email protected]
>> <mailto:[email protected]>>
>> ---
>>  drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 22
>> +++++-----------------
>>  1 file changed, 5 insertions(+), 17 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
>> b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
>> index 7ebe831..0f7dba7 100644
>> --- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
>> +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
>> @@ -47,22 +47,6 @@ static irqreturn_t hibmc_drm_interrupt(int irq,
>> void *arg)
>>         return IRQ_HANDLED;
>>  }
>>
>> -static void hibmc_remove_framebuffers(struct pci_dev *pdev)
>> -{
>> -       struct apertures_struct *ap;
>> -
>> -       ap = alloc_apertures(1);
>> -       if (!ap)
>> -               return;
>> -
>> -       ap->ranges[0].base = pci_resource_start(pdev, 0);
>> -       ap->ranges[0].size = pci_resource_len(pdev, 0);
>> -
>> -       drm_fb_helper_remove_conflicting_framebuffers(ap,
>> "hibmcdrmfb", false);
>> -
>> -       kfree(ap);
>> -}
>> -
>>  static struct drm_driver hibmc_driver = {
>>         .driver_features        = DRIVER_GEM | DRIVER_MODESET |
>> DRIVER_ATOMIC,
>>         .fops                   = &hibmc_fops,
>> @@ -343,7 +327,11 @@ static int hibmc_pci_probe(struct pci_dev *pdev,
>>         struct drm_device *dev;
>>         int ret;
>>
>> -       hibmc_remove_framebuffers(pdev);
>> +       ret = drm_fb_helper_remove_conflicting_pci_framebuffers(pdev,
>> +
>>  "hibmcdrmfb");
>> +       if (ret)
>> +               return ret;
>> +
>>
>>         dev = drm_dev_alloc(&hibmc_driver, &pdev->dev);
>>         if (IS_ERR(dev)) {
>> --
>> 2.7.4
>>
>