* [PATCH] drm/hisilicon: Add the shutdown for hibmc_pci_driver
@ 2020-04-11 2:49 Tian Tao
2020-04-12 14:18 ` Sam Ravnborg
0 siblings, 1 reply; 3+ messages in thread
From: Tian Tao @ 2020-04-11 2:49 UTC (permalink / raw)
To: puck.chen, airlied, daniel, tzimmermann, kraxel,
alexander.deucher, tglx, dri-devel, xinliang.liu, linux-kernel
Cc: linuxarm
add the shutdown function to release the resource.
Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
---
drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
index a6fd0c2..126d4f4 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
@@ -232,6 +232,21 @@ static int hibmc_hw_map(struct hibmc_drm_private *priv)
return 0;
}
+static void hibmc_hw_unmap(struct hibmc_drm_private *priv)
+{
+ struct drm_device *dev = priv->dev;
+
+ if (priv->mmio) {
+ devm_iounmap(dev->dev, priv->mmio);
+ priv->mmio = NULL;
+ }
+
+ if (priv->fb_map) {
+ devm_iounmap(dev->dev, priv->fb_map);
+ priv->fb_map = NULL;
+ }
+}
+
static int hibmc_hw_init(struct hibmc_drm_private *priv)
{
int ret;
@@ -258,6 +273,7 @@ static int hibmc_unload(struct drm_device *dev)
hibmc_kms_fini(priv);
hibmc_mm_fini(priv);
+ hibmc_hw_unmap(priv);
dev->dev_private = NULL;
return 0;
}
@@ -374,6 +390,12 @@ static void hibmc_pci_remove(struct pci_dev *pdev)
drm_dev_unregister(dev);
hibmc_unload(dev);
drm_dev_put(dev);
+ pci_disable_device(pdev);
+}
+
+static void hibmc_pci_shutdown(struct pci_dev *pdev)
+{
+ hibmc_pci_remove(pdev);
}
static struct pci_device_id hibmc_pci_table[] = {
@@ -386,6 +408,7 @@ static struct pci_driver hibmc_pci_driver = {
.id_table = hibmc_pci_table,
.probe = hibmc_pci_probe,
.remove = hibmc_pci_remove,
+ .shutdown = hibmc_pci_shutdown,
.driver.pm = &hibmc_pm_ops,
};
--
2.7.4
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^ permalink raw reply related [flat|nested] 3+ messages in thread* Re: [PATCH] drm/hisilicon: Add the shutdown for hibmc_pci_driver
2020-04-11 2:49 [PATCH] drm/hisilicon: Add the shutdown for hibmc_pci_driver Tian Tao
@ 2020-04-12 14:18 ` Sam Ravnborg
0 siblings, 0 replies; 3+ messages in thread
From: Sam Ravnborg @ 2020-04-12 14:18 UTC (permalink / raw)
To: Tian Tao
Cc: airlied, puck.chen, linux-kernel, dri-devel, linuxarm,
xinliang.liu, kraxel, tzimmermann, alexander.deucher, tglx
Hi Tian.
On Sat, Apr 11, 2020 at 10:49:30AM +0800, Tian Tao wrote:
> add the shutdown function to release the resource.
>
Why it the release of the memory required in the shutdown method?
The memory is allocated using devm_ioremap() which
will let device management handle the release of the resources when
he driver is released.
The patch also introduces a pci_disable_device()
The better approch would be to use pcim_enable_device()
so you let the device management about releasing the
resources.
Sam
> Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
> ---
> drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 23 +++++++++++++++++++++++
> 1 file changed, 23 insertions(+)
>
> diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
> index a6fd0c2..126d4f4 100644
> --- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
> +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
> @@ -232,6 +232,21 @@ static int hibmc_hw_map(struct hibmc_drm_private *priv)
> return 0;
> }
>
> +static void hibmc_hw_unmap(struct hibmc_drm_private *priv)
> +{
> + struct drm_device *dev = priv->dev;
> +
> + if (priv->mmio) {
> + devm_iounmap(dev->dev, priv->mmio);
> + priv->mmio = NULL;
> + }
> +
> + if (priv->fb_map) {
> + devm_iounmap(dev->dev, priv->fb_map);
> + priv->fb_map = NULL;
> + }
> +}
> +
> static int hibmc_hw_init(struct hibmc_drm_private *priv)
> {
> int ret;
> @@ -258,6 +273,7 @@ static int hibmc_unload(struct drm_device *dev)
>
> hibmc_kms_fini(priv);
> hibmc_mm_fini(priv);
> + hibmc_hw_unmap(priv);
> dev->dev_private = NULL;
> return 0;
> }
> @@ -374,6 +390,12 @@ static void hibmc_pci_remove(struct pci_dev *pdev)
> drm_dev_unregister(dev);
> hibmc_unload(dev);
> drm_dev_put(dev);
> + pci_disable_device(pdev);
> +}
> +
> +static void hibmc_pci_shutdown(struct pci_dev *pdev)
> +{
> + hibmc_pci_remove(pdev);
> }
>
> static struct pci_device_id hibmc_pci_table[] = {
> @@ -386,6 +408,7 @@ static struct pci_driver hibmc_pci_driver = {
> .id_table = hibmc_pci_table,
> .probe = hibmc_pci_probe,
> .remove = hibmc_pci_remove,
> + .shutdown = hibmc_pci_shutdown,
> .driver.pm = &hibmc_pm_ops,
> };
>
> --
> 2.7.4
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
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^ permalink raw reply [flat|nested] 3+ messages in thread
* [PATCH] drm/hisilicon: Add the load and unload for hibmc_driver
@ 2020-03-06 3:42 Tian Tao
2020-03-06 3:42 ` [PATCH] drm/hisilicon: Add the shutdown for hibmc_pci_driver Tian Tao
0 siblings, 1 reply; 3+ messages in thread
From: Tian Tao @ 2020-03-06 3:42 UTC (permalink / raw)
To: puck.chen, airlied, daniel, tzimmermann, kraxel,
alexander.deucher, tglx, dri-devel, xinliang.liu, linux-kernel
Cc: linuxarm
using the load and unload function provided by drm framework instead of
doing the same work in the hibmc_pci_probe and do some code cleanup.
Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Signed-off-by: Gong junjie <gongjunjie2@huawei.com>
---
drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 62 +++++++++----------------
drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h | 2 +
2 files changed, 24 insertions(+), 40 deletions(-)
diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
index 79a180a..51f1c70 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
@@ -23,7 +23,7 @@
#include <drm/drm_print.h>
#include <drm/drm_probe_helper.h>
#include <drm/drm_vblank.h>
-
+#include <drm/drm_pci.h>
#include "hibmc_drm_drv.h"
#include "hibmc_drm_regs.h"
@@ -49,6 +49,8 @@ static irqreturn_t hibmc_drm_interrupt(int irq, void *arg)
static struct drm_driver hibmc_driver = {
.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
+ .load = hibmc_load,
+ .unload = hibmc_unload,
.fops = &hibmc_fops,
.name = "hibmc",
.date = "20160828",
@@ -232,6 +234,21 @@ static int hibmc_hw_map(struct hibmc_drm_private *priv)
return 0;
}
+static void hibmc_hw_unmap(struct hibmc_drm_private *priv)
+{
+ struct drm_device *dev = priv->dev;
+
+ if (priv->mmio) {
+ devm_iounmap(dev->dev, priv->mmio);
+ priv->mmio = NULL;
+ }
+
+ if (priv->fb_map) {
+ devm_iounmap(dev->dev, priv->fb_map);
+ priv->fb_map = NULL;
+ }
+}
+
static int hibmc_hw_init(struct hibmc_drm_private *priv)
{
int ret;
@@ -245,7 +262,7 @@ static int hibmc_hw_init(struct hibmc_drm_private *priv)
return 0;
}
-static int hibmc_unload(struct drm_device *dev)
+void hibmc_unload(struct drm_device *dev)
{
struct hibmc_drm_private *priv = dev->dev_private;
@@ -258,11 +275,12 @@ static int hibmc_unload(struct drm_device *dev)
hibmc_kms_fini(priv);
hibmc_mm_fini(priv);
+ hibmc_hw_unmap(priv);
dev->dev_private = NULL;
return 0;
}
-static int hibmc_load(struct drm_device *dev)
+int hibmc_load(struct drm_device *dev, unsigned long flags)
{
struct hibmc_drm_private *priv;
int ret;
@@ -332,43 +350,7 @@ static int hibmc_pci_probe(struct pci_dev *pdev,
if (ret)
return ret;
- dev = drm_dev_alloc(&hibmc_driver, &pdev->dev);
- if (IS_ERR(dev)) {
- DRM_ERROR("failed to allocate drm_device\n");
- return PTR_ERR(dev);
- }
-
- dev->pdev = pdev;
- pci_set_drvdata(pdev, dev);
-
- ret = pci_enable_device(pdev);
- if (ret) {
- DRM_ERROR("failed to enable pci device: %d\n", ret);
- goto err_free;
- }
-
- ret = hibmc_load(dev);
- if (ret) {
- DRM_ERROR("failed to load hibmc: %d\n", ret);
- goto err_disable;
- }
-
- ret = drm_dev_register(dev, 0);
- if (ret) {
- DRM_ERROR("failed to register drv for userspace access: %d\n",
- ret);
- goto err_unload;
- }
- return 0;
-
-err_unload:
- hibmc_unload(dev);
-err_disable:
- pci_disable_device(pdev);
-err_free:
- drm_dev_put(dev);
-
- return ret;
+ return drm_get_pci_dev(pdev, ent, &hibmc_driver);
}
static void hibmc_pci_remove(struct pci_dev *pdev)
diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
index 50a0c1f..4e89cd7 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
@@ -37,6 +37,8 @@ void hibmc_set_power_mode(struct hibmc_drm_private *priv,
void hibmc_set_current_gate(struct hibmc_drm_private *priv,
unsigned int gate);
+int hibmc_load(struct drm_device *dev, unsigned long flags);
+void hibmc_unload(struct drm_device *dev);
int hibmc_de_init(struct hibmc_drm_private *priv);
int hibmc_vdac_init(struct hibmc_drm_private *priv);
--
2.7.4
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^ permalink raw reply related [flat|nested] 3+ messages in thread* [PATCH] drm/hisilicon: Add the shutdown for hibmc_pci_driver
2020-03-06 3:42 [PATCH] drm/hisilicon: Add the load and unload for hibmc_driver Tian Tao
@ 2020-03-06 3:42 ` Tian Tao
0 siblings, 0 replies; 3+ messages in thread
From: Tian Tao @ 2020-03-06 3:42 UTC (permalink / raw)
To: puck.chen, airlied, daniel, tzimmermann, kraxel,
alexander.deucher, tglx, dri-devel, xinliang.liu, linux-kernel
Cc: linuxarm
add the shutdown function to release the resource.
Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
---
drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
index 51f1c70..0e58455d 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
@@ -357,9 +357,14 @@ static void hibmc_pci_remove(struct pci_dev *pdev)
{
struct drm_device *dev = pci_get_drvdata(pdev);
- drm_dev_unregister(dev);
- hibmc_unload(dev);
drm_dev_put(dev);
+ pci_disable_device(pdev);
+
+}
+
+static void hibmc_pci_shutdown(struct pci_dev *pdev)
+{
+ hibmc_pci_remove(pdev);
}
static struct pci_device_id hibmc_pci_table[] = {
@@ -372,6 +377,7 @@ static struct pci_driver hibmc_pci_driver = {
.id_table = hibmc_pci_table,
.probe = hibmc_pci_probe,
.remove = hibmc_pci_remove,
+ .shutdown = hibmc_pci_shutdown,
.driver.pm = &hibmc_pm_ops,
};
--
2.7.4
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^ permalink raw reply related [flat|nested] 3+ messages in thread
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2020-04-11 2:49 [PATCH] drm/hisilicon: Add the shutdown for hibmc_pci_driver Tian Tao
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2020-03-06 3:42 [PATCH] drm/hisilicon: Add the load and unload for hibmc_driver Tian Tao
2020-03-06 3:42 ` [PATCH] drm/hisilicon: Add the shutdown for hibmc_pci_driver Tian Tao
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