* [PATCH] drm/i915: Use chipset-specific irq installers
@ 2011-06-28 10:48 Chris Wilson
2011-06-28 17:48 ` Ben Widawsky
0 siblings, 1 reply; 4+ messages in thread
From: Chris Wilson @ 2011-06-28 10:48 UTC (permalink / raw)
To: intel-gfx
Konstantin Belousov pointed out that 4697995b98417 replaced the generic
i915_driver_irq_*install() functions with chipset specific routines
accessible only through driver->irq_*install(). So update the sanity
check in i915_request_wait() to match.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
drivers/gpu/drm/i915/i915_gem.c | 31 ++++++++++++++++++++-----------
1 files changed, 20 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 60268173..add0141 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2029,6 +2029,25 @@ i915_gem_retire_work_handler(struct work_struct *work)
mutex_unlock(&dev->struct_mutex);
}
+static void assert_irq_enabled(struct intel_ring_buffer *ring)
+{
+ struct drm_device *dev = ring->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 ier;
+
+ if (HAS_PCH_SPLIT(dev))
+ ier = I915_READ(DEIER) | I915_READ(GTIER);
+ else
+ ier = I915_READ(IER);
+
+ if (!ier) {
+ DRM_ERROR("something (likely vbetool) disabled "
+ "interrupts, re-enabling\n");
+ dev->driver->irq_preinstall(dev);
+ dev->driver->irq_postinstall(dev);
+ }
+}
+
/**
* Waits for a sequence number to be signaled, and cleans up the
* request and object lists appropriately for that event.
@@ -2038,7 +2057,6 @@ i915_wait_request(struct intel_ring_buffer *ring,
uint32_t seqno)
{
drm_i915_private_t *dev_priv = ring->dev->dev_private;
- u32 ier;
int ret = 0;
BUG_ON(seqno == 0);
@@ -2073,16 +2091,7 @@ i915_wait_request(struct intel_ring_buffer *ring,
}
if (!i915_seqno_passed(ring->get_seqno(ring), seqno)) {
- if (HAS_PCH_SPLIT(ring->dev))
- ier = I915_READ(DEIER) | I915_READ(GTIER);
- else
- ier = I915_READ(IER);
- if (!ier) {
- DRM_ERROR("something (likely vbetool) disabled "
- "interrupts, re-enabling\n");
- i915_driver_irq_preinstall(ring->dev);
- i915_driver_irq_postinstall(ring->dev);
- }
+ assert_irq_enabled(ring);
trace_i915_gem_request_wait_begin(ring, seqno);
--
1.7.5.4
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] drm/i915: Use chipset-specific irq installers
2011-06-28 10:48 [PATCH] drm/i915: Use chipset-specific irq installers Chris Wilson
@ 2011-06-28 17:48 ` Ben Widawsky
2011-06-28 17:56 ` Keith Packard
2011-06-28 18:01 ` Chris Wilson
0 siblings, 2 replies; 4+ messages in thread
From: Ben Widawsky @ 2011-06-28 17:48 UTC (permalink / raw)
To: Chris Wilson; +Cc: intel-gfx
On Tue, Jun 28, 2011 at 11:48:51AM +0100, Chris Wilson wrote:
> Konstantin Belousov pointed out that 4697995b98417 replaced the generic
> i915_driver_irq_*install() functions with chipset specific routines
> accessible only through driver->irq_*install(). So update the sanity
> check in i915_request_wait() to match.
>
> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
> ---
> drivers/gpu/drm/i915/i915_gem.c | 31 ++++++++++++++++++++-----------
> 1 files changed, 20 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
> index 60268173..add0141 100644
> --- a/drivers/gpu/drm/i915/i915_gem.c
> +++ b/drivers/gpu/drm/i915/i915_gem.c
> @@ -2029,6 +2029,25 @@ i915_gem_retire_work_handler(struct work_struct *work)
> mutex_unlock(&dev->struct_mutex);
> }
>
> +static void assert_irq_enabled(struct intel_ring_buffer *ring)
> +{
> + struct drm_device *dev = ring->dev;
> + struct drm_i915_private *dev_priv = dev->dev_private;
> + u32 ier;
> +
> + if (HAS_PCH_SPLIT(dev))
> + ier = I915_READ(DEIER) | I915_READ(GTIER);
> + else
> + ier = I915_READ(IER);
> +
> + if (!ier) {
> + DRM_ERROR("something (likely vbetool) disabled "
> + "interrupts, re-enabling\n");
> + dev->driver->irq_preinstall(dev);
> + dev->driver->irq_postinstall(dev);
> + }
> +}
> +
> /**
> * Waits for a sequence number to be signaled, and cleans up the
> * request and object lists appropriately for that event.
> @@ -2038,7 +2057,6 @@ i915_wait_request(struct intel_ring_buffer *ring,
> uint32_t seqno)
> {
> drm_i915_private_t *dev_priv = ring->dev->dev_private;
> - u32 ier;
> int ret = 0;
>
> BUG_ON(seqno == 0);
> @@ -2073,16 +2091,7 @@ i915_wait_request(struct intel_ring_buffer *ring,
> }
>
> if (!i915_seqno_passed(ring->get_seqno(ring), seqno)) {
> - if (HAS_PCH_SPLIT(ring->dev))
> - ier = I915_READ(DEIER) | I915_READ(GTIER);
> - else
> - ier = I915_READ(IER);
> - if (!ier) {
> - DRM_ERROR("something (likely vbetool) disabled "
> - "interrupts, re-enabling\n");
> - i915_driver_irq_preinstall(ring->dev);
> - i915_driver_irq_postinstall(ring->dev);
> - }
> + assert_irq_enabled(ring);
>
> trace_i915_gem_request_wait_begin(ring, seqno);
>
I'm not totally thrilled with the name. It would make more sense to me
if you had something like:
if (!is_irq_enabled(ring)) {
DRM_ERROR(...);
dev->driver->irq_preinstall(ring->dev);
dev->driver->irq_postinstall(ring->dev);
}
This allows allows for error checking at other points without changing
state.
I'm very nitpicky when it comes to the work assert :p
Ben
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] drm/i915: Use chipset-specific irq installers
2011-06-28 17:48 ` Ben Widawsky
@ 2011-06-28 17:56 ` Keith Packard
2011-06-28 18:01 ` Chris Wilson
1 sibling, 0 replies; 4+ messages in thread
From: Keith Packard @ 2011-06-28 17:56 UTC (permalink / raw)
To: Ben Widawsky, Chris Wilson; +Cc: intel-gfx
[-- Attachment #1.1: Type: text/plain, Size: 749 bytes --]
On Tue, 28 Jun 2011 10:48:57 -0700, Ben Widawsky <ben@bwidawsk.net> wrote:
> I'm very nitpicky when it comes to the work assert :p
I pushed a much simpler patch:
----------------------- drivers/gpu/drm/i915/i915_gem.c -----------------------
index c6389de..e81dbe5 100644
@@ -2080,8 +2080,8 @@ i915_wait_request(struct intel_ring_buffer *ring,
if (!ier) {
DRM_ERROR("something (likely vbetool) disabled "
"interrupts, re-enabling\n");
- i915_driver_irq_preinstall(ring->dev);
- i915_driver_irq_postinstall(ring->dev);
+ ring->dev->driver->irq_preinstall(ring->dev);
+ ring->dev->driver->irq_postinstall(ring->dev);
}
trace_i915_gem_request_wait_begin(ring, seqno);
--
keith.packard@intel.com
[-- Attachment #1.2: Type: application/pgp-signature, Size: 189 bytes --]
[-- Attachment #2: Type: text/plain, Size: 159 bytes --]
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] drm/i915: Use chipset-specific irq installers
2011-06-28 17:48 ` Ben Widawsky
2011-06-28 17:56 ` Keith Packard
@ 2011-06-28 18:01 ` Chris Wilson
1 sibling, 0 replies; 4+ messages in thread
From: Chris Wilson @ 2011-06-28 18:01 UTC (permalink / raw)
To: Ben Widawsky; +Cc: intel-gfx
On Tue, 28 Jun 2011 10:48:57 -0700, Ben Widawsky <ben@bwidawsk.net> wrote:
> I'm not totally thrilled with the name. It would make more sense to me
> if you had something like:
> if (!is_irq_enabled(ring)) {
> DRM_ERROR(...);
> dev->driver->irq_preinstall(ring->dev);
> dev->driver->irq_postinstall(ring->dev);
> }
>
> This allows allows for error checking at other points without changing
> state.
>
> I'm very nitpicky when it comes to the work assert :p
*g* I was just following the idiom Jesse started with his
assert_plane_enabled() and friends. :)
You're right that expressed as a predicate function with a separate fixup
routine this would be more useful, but more so is idiomatic programming...
Feel free to supplement the code with more error checking! :)
-Chris
--
Chris Wilson, Intel Open Source Technology Centre
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2011-06-28 18:01 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2011-06-28 10:48 [PATCH] drm/i915: Use chipset-specific irq installers Chris Wilson
2011-06-28 17:48 ` Ben Widawsky
2011-06-28 17:56 ` Keith Packard
2011-06-28 18:01 ` Chris Wilson
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).