From 8f61b34cebf0b8c4a00362f30cb03c8f5225cff6 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Fri, 14 Jun 2013 09:13:52 -0400 Subject: [PATCH] drm/radeon: add a reset work handler New asics support non-privileged IBs. This allows us to skip IB checking in the driver since the hardware will check the command buffers for us. When using non-privileged IBs, if the CP encounters an illegal register in the command stream, it will halt and generate an interrupt. The CP needs to be reset to continue. For now just do a full GPU reset when this happens. Signed-off-by: Alex Deucher --- drivers/gpu/drm/radeon/radeon.h | 1 + drivers/gpu/drm/radeon/radeon_irq_kms.c | 18 ++++++++++++++++++ 2 files changed, 19 insertions(+) diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index 142ce6cc69f5..f5fccbbf78a6 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -1691,6 +1691,7 @@ struct radeon_device { struct si_rlc rlc; struct work_struct hotplug_work; struct work_struct audio_work; + struct work_struct reset_work; int num_crtc; /* number of crtcs */ struct mutex dc_hw_i2c_mutex; /* display controller hw i2c mutex */ bool audio_enabled; diff --git a/drivers/gpu/drm/radeon/radeon_irq_kms.c b/drivers/gpu/drm/radeon/radeon_irq_kms.c index 5a99d433fc35..dbffecad5a4c 100644 --- a/drivers/gpu/drm/radeon/radeon_irq_kms.c +++ b/drivers/gpu/drm/radeon/radeon_irq_kms.c @@ -81,6 +81,23 @@ static void radeon_hotplug_work_func(struct work_struct *work) drm_helper_hpd_irq_event(dev); } +/** + * radeon_irq_reset_work_func - execute gpu reset + * + * @work: work struct + * + * Execute scheduled gpu reset (cayman+). + * This function is called when the irq handler + * thinks we need a gpu reset. + */ +static void radeon_irq_reset_work_func(struct work_struct *work) +{ + struct radeon_device *rdev = container_of(work, struct radeon_device, + reset_work); + + radeon_gpu_reset(rdev); +} + /** * radeon_driver_irq_preinstall_kms - drm irq preinstall callback * @@ -243,6 +260,7 @@ int radeon_irq_kms_init(struct radeon_device *rdev) INIT_WORK(&rdev->hotplug_work, radeon_hotplug_work_func); INIT_WORK(&rdev->audio_work, r600_audio_update_hdmi); + INIT_WORK(&rdev->reset_work, radeon_irq_reset_work_func); spin_lock_init(&rdev->irq.lock); r = drm_vblank_init(rdev->ddev, rdev->num_crtc); -- 2.20.1