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From: Brian Ho <brian@brkho.com>
To: freedreno@lists.freedesktop.org
Cc: robdclark@chromium.org, Brian Ho <brian@brkho.com>,
	"open list:DRM DRIVER FOR MSM ADRENO GPU"
	<linux-arm-msm@vger.kernel.org>,
	open list <linux-kernel@vger.kernel.org>,
	"open list:DRM DRIVER FOR MSM ADRENO GPU"
	<dri-devel@lists.freedesktop.org>,
	hoegsberg@chromium.org
Subject: [PATCH 0/2] drm/msm: Add the MSM_WAIT_IOVA ioctl
Date: Mon, 13 Jan 2020 10:36:03 -0500	[thread overview]
Message-ID: <20200113153605.52350-1-brian@brkho.com> (raw)

This patch set implements the MSM_WAIT_IOVA ioctl which lets
userspace sleep until the value at a given iova reaches a certain
condition. This is needed in turnip to implement the
VK_QUERY_RESULT_WAIT_BIT flag for vkGetQueryPoolResults.

First, we add a GPU-wide wait queue that is signaled on all IRQs.
We can then wait on this wait queue inside MSM_WAIT_IOVA until the
condition is met.

The corresponding merge request in mesa can be found at:
https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3279

Brian Ho (2):
  drm/msm: Add a GPU-wide wait queue
  drm/msm: Add MSM_WAIT_IOVA ioctl

 drivers/gpu/drm/msm/msm_drv.c | 63 +++++++++++++++++++++++++++++++++--
 drivers/gpu/drm/msm/msm_gpu.c |  4 +++
 drivers/gpu/drm/msm/msm_gpu.h |  3 ++
 include/uapi/drm/msm_drm.h    | 13 ++++++++
 4 files changed, 81 insertions(+), 2 deletions(-)

-- 
2.25.0.rc1.283.g88dfdc4193-goog

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             reply	other threads:[~2020-01-14  8:20 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-13 15:36 Brian Ho [this message]
2020-01-13 15:36 ` [PATCH 1/2] drm/msm: Add a GPU-wide wait queue Brian Ho
2020-01-13 17:55   ` [Freedreno] " Jordan Crouse
2020-01-13 18:23     ` Rob Clark
2020-01-13 15:36 ` [PATCH 2/2] drm/msm: Add MSM_WAIT_IOVA ioctl Brian Ho
2020-01-13 16:25   ` Rob Clark
2020-01-13 17:57     ` Kristian Kristensen
2020-01-13 22:55       ` Brian Ho
2020-01-13 23:17         ` Rob Clark
2020-01-14  0:45           ` [Freedreno] " Kristian Høgsberg
2020-01-14 16:40           ` Brian Ho
2020-01-14 16:48             ` Rob Clark
2020-01-14 17:45               ` Brian Ho
2020-01-13 17:51   ` [Freedreno] " Jordan Crouse
2020-01-13 18:21     ` Rob Clark
2020-01-14 16:52     ` Rob Clark
2020-01-14 17:23       ` Jordan Crouse
2020-01-14 17:30         ` Kristian Kristensen
2020-01-14 18:05           ` Jordan Crouse

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