[PATCH] drm/radeon/kms: clean up multiple crtc handling for evergreen+
On 07/08/2011 09:51 AM, Alex Deucher wrote:
> evergreen+ asics have 2-6 crtcs. Don't access crtc registers
> for crtc regs that don't exist as they have very high latency
> and may cause problems on some asics. The previous code missed
> a few cases and was not fine grained enough (missed the 4 crtc
> case for example).
>
> Fixes:
> https://bugs.freedesktop.org/show_bug.cgi?id=38800
>
> Signed-off-by: Alex Deucher
> Reviewed-by: Michel D?nzer
> ---
> drivers/gpu/drm/radeon/evergreen.c | 159
> ++--
> 1 files changed, 98 insertions(+), 61 deletions(-)
>
> diff --git a/drivers/gpu/drm/radeon/evergreen.c
> b/drivers/gpu/drm/radeon/evergreen.c
> index e8a5ffb..bf2493b 100644
> --- a/drivers/gpu/drm/radeon/evergreen.c
> +++ b/drivers/gpu/drm/radeon/evergreen.c
> @@ -985,17 +985,19 @@ void evergreen_mc_stop(struct radeon_device *rdev,
> struct evergreen_mc_save *sav
> {
> save->vga_control[0] = RREG32(D1VGA_CONTROL);
> save->vga_control[1] = RREG32(D2VGA_CONTROL);
> - save->vga_control[2] = RREG32(EVERGREEN_D3VGA_CONTROL);
> - save->vga_control[3] = RREG32(EVERGREEN_D4VGA_CONTROL);
> - save->vga_control[4] = RREG32(EVERGREEN_D5VGA_CONTROL);
> - save->vga_control[5] = RREG32(EVERGREEN_D6VGA_CONTROL);
> save->vga_render_control = RREG32(VGA_RENDER_CONTROL);
> save->vga_hdp_control = RREG32(VGA_HDP_CONTROL);
> save->crtc_control[0] = RREG32(EVERGREEN_CRTC_CONTROL +
> EVERGREEN_CRTC0_REGISTER_OFFSET);
> save->crtc_control[1] = RREG32(EVERGREEN_CRTC_CONTROL +
> EVERGREEN_CRTC1_REGISTER_OFFSET);
> - if (!(rdev->flags & RADEON_IS_IGP)) {
> + if (rdev->num_crtc >= 4) {
> + save->vga_control[2] = RREG32(EVERGREEN_D3VGA_CONTROL);
> + save->vga_control[3] = RREG32(EVERGREEN_D4VGA_CONTROL);
> save->crtc_control[2] = RREG32(EVERGREEN_CRTC_CONTROL +
> EVERGREEN_CRTC2_REGISTER_OFFSET);
> save->crtc_control[3] = RREG32(EVERGREEN_CRTC_CONTROL +
> EVERGREEN_CRTC3_REGISTER_OFFSET);
> + }
> + if (rdev->num_crtc >= 6) {
> + save->vga_control[4] = RREG32(EVERGREEN_D5VGA_CONTROL);
> + save->vga_control[5] = RREG32(EVERGREEN_D6VGA_CONTROL);
> save->crtc_control[4] = RREG32(EVERGREEN_CRTC_CONTROL +
> EVERGREEN_CRTC4_REGISTER_OFFSET);
> save->crtc_control[5] = RREG32(EVERGREEN_CRTC_CONTROL +
> EVERGREEN_CRTC5_REGISTER_OFFSET);
> }
> @@ -1004,35 +1006,45 @@ void evergreen_mc_stop(struct radeon_device *rdev,
> struct evergreen_mc_save *sav
> WREG32(VGA_RENDER_CONTROL, 0);
> WREG32(EVERGREEN_CRTC_UPDATE_LOCK + EVERGREEN_CRTC0_REGISTER_OFFSET, 1);
> WREG32(EVERGREEN_CRTC_UPDATE_LOCK + EVERGREEN_CRTC1_REGISTER_OFFSET, 1);
> - if (!(rdev->flags & RADEON_IS_IGP)) {
> + if (rdev->num_crtc >= 4) {
> WREG32(EVERGREEN_CRTC_UPDATE_LOCK +
> EVERGREEN_CRTC2_REGISTER_OFFSET, 1);
> WREG32(EVERGREEN_CRTC_UPDATE_LOCK +
> EVERGREEN_CRTC3_REGISTER_OFFSET, 1);
> + }
> + if (rdev->num_crtc >= 6) {
> WREG32(EVERGREEN_CRTC_UPDATE_LOCK +
> EVERGREEN_CRTC4_REGISTER_OFFSET, 1);
> WREG32(EVERGREEN_CRTC_UPDATE_LOCK +
> EVERGREEN_CRTC5_REGISTER_OFFSET, 1);
> }
> WREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC0_REGISTER_OFFSET, 0);
> WREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC1_REGISTER_OFFSET, 0);
> - if (!(rdev->flags & RADEON_IS_IGP)) {
> + if (rdev->num_crtc >= 4) {
> WREG32(EVERGREEN_CRTC_CONTROL +
> EVERGREEN_CRTC2_REGISTER_OFFSET, 0);
> WREG32(EVERGREEN_CRTC_CONTROL +
> EVERGREEN_CRTC3_REGISTER_OFFSET, 0);
> + }
> + if (rdev->num_crtc >= 6) {
> WREG32(EVERGREEN_CRTC_CONTROL +
> EVERGREEN_CRTC4_REGISTER_OFFSET, 0);
> WREG32(EVERGREEN_CRTC_CONTROL +
> EVERGREEN_CRTC5_REGISTER_OFFSET, 0);
> }
> WREG32(EVERGREEN_CRTC_UPDATE_LOCK + EVERGREEN_CRTC0_REGISTER_OFFSET, 0);
> WREG32(EVERGREEN_CRTC_UPDATE_LOCK + EVERGREEN_CRTC1_REGISTER_OFFSET, 0);
> - if (!(rdev->flags & RADEON_IS_IGP)) {
> + if (rdev->num_crtc >= 4) {
> WREG32(EVERGREEN_CRTC_UPDATE_LOCK +
> EVERGREEN_CRTC2_REGISTER_OFFSET, 0);
> WREG32(EVERGREEN_CRTC_UPDATE_LOCK +
> EVERGREEN_CRTC3_REGISTER_OFFSET, 0);
> + }
> + if (rdev->num_crtc >= 6) {
> WREG32(EVERGREEN_CRTC_UPDATE_LOCK +
> EVERGREEN_CRTC4_REGISTER_OFFSET, 0);
> WREG32(EVERGREEN_CRTC_UPDATE_LOCK +
> EVERGREEN_CRTC5_REGISTER_OFFSET, 0);
> }
>
> WREG32(D1VGA_CONTROL, 0);
> WREG32(D2VGA_CONTROL, 0);
> - WREG32(EVERGREEN_D3VGA_CONTROL, 0);
> - WREG32(EVERGREEN_D4VGA_CONTROL, 0);
> - WREG32(EVERGREEN_D5VGA_CONTROL, 0);
> - WREG32(EVERGREEN_D6VGA_CONTROL, 0);
> + if (rdev->num_crtc >= 4) {
> + WREG32(EVERGREEN_D3VGA_CONTROL, 0);
> + WREG32(EVERGREEN_D4VGA_CONTROL, 0);
> + }
> + if
Re: [PATCH] drm/radeon/kms: clean up multiple crtc handling for evergreen+
On 07/08/2011 09:51 AM, Alex Deucher wrote:
evergreen+ asics have 2-6 crtcs. Don't access crtc registers
for crtc regs that don't exist as they have very high latency
and may cause problems on some asics. The previous code missed
a few cases and was not fine grained enough (missed the 4 crtc
case for example).
Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=38800
Signed-off-by: Alex Deucher alexdeuc...@gmail.com
Reviewed-by: Michel Dänzer mic...@daenzer.net
---
drivers/gpu/drm/radeon/evergreen.c | 159
++--
1 files changed, 98 insertions(+), 61 deletions(-)
diff --git a/drivers/gpu/drm/radeon/evergreen.c
b/drivers/gpu/drm/radeon/evergreen.c
index e8a5ffb..bf2493b 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -985,17 +985,19 @@ void evergreen_mc_stop(struct radeon_device *rdev,
struct evergreen_mc_save *sav
{
save-vga_control[0] = RREG32(D1VGA_CONTROL);
save-vga_control[1] = RREG32(D2VGA_CONTROL);
- save-vga_control[2] = RREG32(EVERGREEN_D3VGA_CONTROL);
- save-vga_control[3] = RREG32(EVERGREEN_D4VGA_CONTROL);
- save-vga_control[4] = RREG32(EVERGREEN_D5VGA_CONTROL);
- save-vga_control[5] = RREG32(EVERGREEN_D6VGA_CONTROL);
save-vga_render_control = RREG32(VGA_RENDER_CONTROL);
save-vga_hdp_control = RREG32(VGA_HDP_CONTROL);
save-crtc_control[0] = RREG32(EVERGREEN_CRTC_CONTROL +
EVERGREEN_CRTC0_REGISTER_OFFSET);
save-crtc_control[1] = RREG32(EVERGREEN_CRTC_CONTROL +
EVERGREEN_CRTC1_REGISTER_OFFSET);
- if (!(rdev-flags RADEON_IS_IGP)) {
+ if (rdev-num_crtc = 4) {
+ save-vga_control[2] = RREG32(EVERGREEN_D3VGA_CONTROL);
+ save-vga_control[3] = RREG32(EVERGREEN_D4VGA_CONTROL);
save-crtc_control[2] = RREG32(EVERGREEN_CRTC_CONTROL +
EVERGREEN_CRTC2_REGISTER_OFFSET);
save-crtc_control[3] = RREG32(EVERGREEN_CRTC_CONTROL +
EVERGREEN_CRTC3_REGISTER_OFFSET);
+ }
+ if (rdev-num_crtc = 6) {
+ save-vga_control[4] = RREG32(EVERGREEN_D5VGA_CONTROL);
+ save-vga_control[5] = RREG32(EVERGREEN_D6VGA_CONTROL);
save-crtc_control[4] = RREG32(EVERGREEN_CRTC_CONTROL +
EVERGREEN_CRTC4_REGISTER_OFFSET);
save-crtc_control[5] = RREG32(EVERGREEN_CRTC_CONTROL +
EVERGREEN_CRTC5_REGISTER_OFFSET);
}
@@ -1004,35 +1006,45 @@ void evergreen_mc_stop(struct radeon_device *rdev,
struct evergreen_mc_save *sav
WREG32(VGA_RENDER_CONTROL, 0);
WREG32(EVERGREEN_CRTC_UPDATE_LOCK + EVERGREEN_CRTC0_REGISTER_OFFSET, 1);
WREG32(EVERGREEN_CRTC_UPDATE_LOCK + EVERGREEN_CRTC1_REGISTER_OFFSET, 1);
- if (!(rdev-flags RADEON_IS_IGP)) {
+ if (rdev-num_crtc = 4) {
WREG32(EVERGREEN_CRTC_UPDATE_LOCK +
EVERGREEN_CRTC2_REGISTER_OFFSET, 1);
WREG32(EVERGREEN_CRTC_UPDATE_LOCK +
EVERGREEN_CRTC3_REGISTER_OFFSET, 1);
+ }
+ if (rdev-num_crtc = 6) {
WREG32(EVERGREEN_CRTC_UPDATE_LOCK +
EVERGREEN_CRTC4_REGISTER_OFFSET, 1);
WREG32(EVERGREEN_CRTC_UPDATE_LOCK +
EVERGREEN_CRTC5_REGISTER_OFFSET, 1);
}
WREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC0_REGISTER_OFFSET, 0);
WREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC1_REGISTER_OFFSET, 0);
- if (!(rdev-flags RADEON_IS_IGP)) {
+ if (rdev-num_crtc = 4) {
WREG32(EVERGREEN_CRTC_CONTROL +
EVERGREEN_CRTC2_REGISTER_OFFSET, 0);
WREG32(EVERGREEN_CRTC_CONTROL +
EVERGREEN_CRTC3_REGISTER_OFFSET, 0);
+ }
+ if (rdev-num_crtc = 6) {
WREG32(EVERGREEN_CRTC_CONTROL +
EVERGREEN_CRTC4_REGISTER_OFFSET, 0);
WREG32(EVERGREEN_CRTC_CONTROL +
EVERGREEN_CRTC5_REGISTER_OFFSET, 0);
}
WREG32(EVERGREEN_CRTC_UPDATE_LOCK + EVERGREEN_CRTC0_REGISTER_OFFSET, 0);
WREG32(EVERGREEN_CRTC_UPDATE_LOCK + EVERGREEN_CRTC1_REGISTER_OFFSET, 0);
- if (!(rdev-flags RADEON_IS_IGP)) {
+ if (rdev-num_crtc = 4) {
WREG32(EVERGREEN_CRTC_UPDATE_LOCK +
EVERGREEN_CRTC2_REGISTER_OFFSET, 0);
WREG32(EVERGREEN_CRTC_UPDATE_LOCK +
EVERGREEN_CRTC3_REGISTER_OFFSET, 0);
+ }
+ if (rdev-num_crtc = 6) {
WREG32(EVERGREEN_CRTC_UPDATE_LOCK +
EVERGREEN_CRTC4_REGISTER_OFFSET, 0);
WREG32(EVERGREEN_CRTC_UPDATE_LOCK +
EVERGREEN_CRTC5_REGISTER_OFFSET, 0);
}
WREG32(D1VGA_CONTROL, 0);
WREG32(D2VGA_CONTROL, 0);
- WREG32(EVERGREEN_D3VGA_CONTROL, 0);
- WREG32(EVERGREEN_D4VGA_CONTROL, 0);
- WREG32(EVERGREEN_D5VGA_CONTROL, 0);
- WREG32(EVERGREEN_D6VGA_CONTROL, 0);
+ if (rdev-num_crtc = 4) {
+ WREG32(EVERGREEN_D3VGA_CONTROL, 0);
+ WREG32(EVERGREEN_D4VGA_CONTROL, 0);
+ }
+ if (rdev-num_crtc = 6) {
+ WREG32(EVERGREEN_D5VGA_CONTROL, 0);
+ WREG32(EVERGREEN_D6VGA_CONTROL,
Re: [RFC] drm: emit change events when mode config changes
On 04/14/2011 12:42 PM, Jesse Barnes wrote:
We've already seen that apps want to monitor the display config, and
some (like upowerd) poll for changes since we don't provide a
notification for general mode config changes, just hotplug events. So
add a new drm event, with CHANGE=1 set in the event, to allow for it.
Signed-off-by: Jesse Barnes jbar...@virtuousgeek.org
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 4c95b5f..174ee64 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -1589,6 +1589,8 @@ int drm_mode_setcrtc(struct drm_device *dev, void *data,
set.fb = fb;
ret = crtc-funcs-set_config(set);
+ drm_sysfs_change_event(dev);
+
out:
kfree(connector_set);
mutex_unlock(dev-mode_config.mutex);
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 9507204..df946d4 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -822,6 +822,8 @@ int drm_fb_helper_set_par(struct fb_info *info)
return ret;
}
}
+
+ drm_sysfs_change_event(dev);
mutex_unlock(dev-mode_config.mutex);
if (fb_helper-delayed_hotplug) {
diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c
index 2eee8e0..fd3af31 100644
--- a/drivers/gpu/drm/drm_sysfs.c
+++ b/drivers/gpu/drm/drm_sysfs.c
@@ -467,9 +467,9 @@ EXPORT_SYMBOL(drm_sysfs_connector_remove);
* drm_sysfs_hotplug_event - generate a DRM uevent
* @dev: DRM device
*
- * Send a uevent for the DRM device specified by @dev. Currently we only
- * set HOTPLUG=1 in the uevent environment, but this could be expanded to
- * deal with other types of events.
+ * Send a uevent for the DRM device specified by @dev. Set HOTPLUG=1 in the
+ * event to indicate a display config change occurred, probably due to a
+ * display being added or removed.
*/
void drm_sysfs_hotplug_event(struct drm_device *dev)
{
@@ -483,6 +483,24 @@ void drm_sysfs_hotplug_event(struct drm_device *dev)
EXPORT_SYMBOL(drm_sysfs_hotplug_event);
/**
+ * drm_sysfs_change_event - generate a DRM uevent indicating a display
config change
+ * @dev: DRM device
+ *
+ * Send a uevent for the DRM device specified by @dev. Set CHANGE=1 to
+ * indicate that a userspace initiated display configuration change occurred.
+ */
+void drm_sysfs_change_event(struct drm_device *dev)
+{
+ char *event_string = CHANGE=1;
+ char *envp[] = { event_string, NULL };
+
+ DRM_DEBUG(generating hotplug event\n);
Should be change event here?
+
+ kobject_uevent_env(dev-primary-kdev.kobj, KOBJ_CHANGE, envp);
+}
+EXPORT_SYMBOL(drm_sysfs_change_event);
+
+/**
* drm_sysfs_device_add - adds a class device to sysfs for a character driver
* @dev: DRM device to be added
* @head: DRM head in question
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index ad5770f..3aff8fc 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -1506,6 +1506,7 @@ extern struct class *drm_sysfs_create(struct module
*owner, char *name);
extern void drm_sysfs_destroy(void);
extern int drm_sysfs_device_add(struct drm_minor *minor);
extern void drm_sysfs_hotplug_event(struct drm_device *dev);
+extern void drm_sysfs_change_event(struct drm_device *dev);
extern void drm_sysfs_device_remove(struct drm_minor *minor);
extern char *drm_get_connector_status_name(enum drm_connector_status status);
extern int drm_sysfs_connector_add(struct drm_connector *connector);
--
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[RFC] drm: emit change events when mode config changes
On 04/14/2011 12:42 PM, Jesse Barnes wrote:
> We've already seen that apps want to monitor the display config, and
> some (like upowerd) poll for changes since we don't provide a
> notification for general mode config changes, just hotplug events. So
> add a new drm event, with CHANGE=1 set in the event, to allow for it.
>
> Signed-off-by: Jesse Barnes
>
> diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
> index 4c95b5f..174ee64 100644
> --- a/drivers/gpu/drm/drm_crtc.c
> +++ b/drivers/gpu/drm/drm_crtc.c
> @@ -1589,6 +1589,8 @@ int drm_mode_setcrtc(struct drm_device *dev, void *data,
> set.fb = fb;
> ret = crtc->funcs->set_config();
>
> + drm_sysfs_change_event(dev);
> +
> out:
> kfree(connector_set);
> mutex_unlock(>mode_config.mutex);
> diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
> index 9507204..df946d4 100644
> --- a/drivers/gpu/drm/drm_fb_helper.c
> +++ b/drivers/gpu/drm/drm_fb_helper.c
> @@ -822,6 +822,8 @@ int drm_fb_helper_set_par(struct fb_info *info)
> return ret;
> }
> }
> +
> + drm_sysfs_change_event(dev);
> mutex_unlock(>mode_config.mutex);
>
> if (fb_helper->delayed_hotplug) {
> diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c
> index 2eee8e0..fd3af31 100644
> --- a/drivers/gpu/drm/drm_sysfs.c
> +++ b/drivers/gpu/drm/drm_sysfs.c
> @@ -467,9 +467,9 @@ EXPORT_SYMBOL(drm_sysfs_connector_remove);
> * drm_sysfs_hotplug_event - generate a DRM uevent
> * @dev: DRM device
> *
> - * Send a uevent for the DRM device specified by @dev. Currently we only
> - * set HOTPLUG=1 in the uevent environment, but this could be expanded to
> - * deal with other types of events.
> + * Send a uevent for the DRM device specified by @dev. Set HOTPLUG=1 in the
> + * event to indicate a display config change occurred, probably due to a
> + * display being added or removed.
> */
> void drm_sysfs_hotplug_event(struct drm_device *dev)
> {
> @@ -483,6 +483,24 @@ void drm_sysfs_hotplug_event(struct drm_device *dev)
> EXPORT_SYMBOL(drm_sysfs_hotplug_event);
>
> /**
> + * drm_sysfs_change_event - generate a DRM uevent indicating a display
> config change
> + * @dev: DRM device
> + *
> + * Send a uevent for the DRM device specified by @dev. Set CHANGE=1 to
> + * indicate that a userspace initiated display configuration change occurred.
> + */
> +void drm_sysfs_change_event(struct drm_device *dev)
> +{
> + char *event_string = "CHANGE=1";
> + char *envp[] = { event_string, NULL };
> +
> + DRM_DEBUG("generating hotplug event\n");
Should be "change event" here?
> +
> + kobject_uevent_env(>primary->kdev.kobj, KOBJ_CHANGE, envp);
> +}
> +EXPORT_SYMBOL(drm_sysfs_change_event);
> +
> +/**
> * drm_sysfs_device_add - adds a class device to sysfs for a character driver
> * @dev: DRM device to be added
> * @head: DRM head in question
> diff --git a/include/drm/drmP.h b/include/drm/drmP.h
> index ad5770f..3aff8fc 100644
> --- a/include/drm/drmP.h
> +++ b/include/drm/drmP.h
> @@ -1506,6 +1506,7 @@ extern struct class *drm_sysfs_create(struct module
> *owner, char *name);
> extern void drm_sysfs_destroy(void);
> extern int drm_sysfs_device_add(struct drm_minor *minor);
> extern void drm_sysfs_hotplug_event(struct drm_device *dev);
> +extern void drm_sysfs_change_event(struct drm_device *dev);
> extern void drm_sysfs_device_remove(struct drm_minor *minor);
> extern char *drm_get_connector_status_name(enum drm_connector_status status);
> extern int drm_sysfs_connector_add(struct drm_connector *connector);
>
> --
> Benefiting from Server Virtualization: Beyond Initial Workload
> Consolidation -- Increasing the use of server virtualization is a top
> priority.Virtualization can reduce costs, simplify management, and improve
> application availability and disaster protection. Learn more about boosting
> the value of server virtualization. http://p.sf.net/sfu/vmware-sfdev2dev
> --
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application availability and disaster protection. Learn more about boosting
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