public inbox for intel-gfx@lists.freedesktop.org
 help / color / mirror / Atom feed
From: Neil Roberts <neil@linux.intel.com>
To: intel-gfx@lists.freedesktop.org
Subject: [PATCH] drm/i915: Add I915_PARAM_REVISION
Date: Wed,  4 Mar 2015 14:41:16 +0000	[thread overview]
Message-ID: <1425480076-9368-1-git-send-email-neil@linux.intel.com> (raw)

Adds a parameter which can be used with DRM_I915_GETPARAM to query the
GPU revision. The intention is to use this in Mesa to implement the
WaDisableSIMD16On3SrcInstr workaround on Skylake but only for
revision 2.

Signed-off-by: Neil Roberts <neil@linux.intel.com>
---
The corresponding Mesa patches are here:

http://lists.freedesktop.org/archives/mesa-dev/2015-March/078534.html

and the libdrm patch is here:

http://lists.freedesktop.org/archives/dri-devel/2015-March/078645.html

 drivers/gpu/drm/i915/i915_dma.c | 3 +++
 include/uapi/drm/i915_drm.h     | 1 +
 2 files changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 0312879..36dd1df 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -68,6 +68,9 @@ static int i915_getparam(struct drm_device *dev, void *data,
 	case I915_PARAM_CHIPSET_ID:
 		value = dev->pdev->device;
 		break;
+	case I915_PARAM_REVISION:
+		value = dev->pdev->revision;
+		break;
 	case I915_PARAM_HAS_GEM:
 		value = 1;
 		break;
diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h
index 6eed16b..b768f3b 100644
--- a/include/uapi/drm/i915_drm.h
+++ b/include/uapi/drm/i915_drm.h
@@ -347,6 +347,7 @@ typedef struct drm_i915_irq_wait {
 #define I915_PARAM_HAS_COHERENT_PHYS_GTT 29
 #define I915_PARAM_MMAP_VERSION          30
 #define I915_PARAM_HAS_BSD2		 31
+#define I915_PARAM_REVISION              32
 
 typedef struct drm_i915_getparam {
 	int param;
-- 
1.9.3

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/intel-gfx

             reply	other threads:[~2015-03-04 14:41 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-04 14:41 Neil Roberts [this message]
2015-03-04 16:16 ` [PATCH] drm/i915: Add I915_PARAM_REVISION Daniel Vetter
2015-03-27 19:18 ` Jesse Barnes

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1425480076-9368-1-git-send-email-neil@linux.intel.com \
    --to=neil@linux.intel.com \
    --cc=intel-gfx@lists.freedesktop.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox