From 03c8f1f15a876002f4193e064ba979f8bc22340f Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Sun, 29 Dec 2019 18:31:47 +0000
Subject: drm/i915/gt: Ensure that all new contexts clear STOP_RING
Git-commit: 987281ab02af9200e02f1d0cefc51d22dc0f5a62
Patch-mainline: v5.6-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322
Set up the RING_MI_MODE in new contexts to clear the STOP_RING bit, just
in case they find it still set after a reset (as they are the first
contexts to be run).
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191229183153.3719869-1-chris@chris-wilson.co.uk
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/i915/gt/intel_lrc.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c
index 35f7a0a3649c..716bd7a01bab 100644
--- a/drivers/gpu/drm/i915/gt/intel_lrc.c
+++ b/drivers/gpu/drm/i915/gt/intel_lrc.c
@@ -3038,10 +3038,8 @@ static void reset_csb_pointers(struct intel_engine_cs *engine)
&execlists->csb_status[reset_value]);
}
-static void __execlists_reset_reg_state(const struct intel_context *ce,
- const struct intel_engine_cs *engine)
+static void __reset_stop_ring(u32 *regs, const struct intel_engine_cs *engine)
{
- u32 *regs = ce->lrc_reg_state;
int x;
x = lrc_ring_mi_mode(engine);
@@ -3051,6 +3049,14 @@ static void __execlists_reset_reg_state(const struct intel_context *ce,
}
}
+static void __execlists_reset_reg_state(const struct intel_context *ce,
+ const struct intel_engine_cs *engine)
+{
+ u32 *regs = ce->lrc_reg_state;
+
+ __reset_stop_ring(regs, engine);
+}
+
static void __execlists_reset(struct intel_engine_cs *engine, bool stalled)
{
struct intel_engine_execlists * const execlists = &engine->execlists;
@@ -4051,6 +4057,8 @@ static void execlists_init_reg_state(u32 *regs,
INTEL_GEN(engine->i915) >= 12 ?
GEN12_CTX_BB_PER_CTX_PTR :
CTX_BB_PER_CTX_PTR);
+
+ __reset_stop_ring(regs, engine);
}
static int
--
2.28.0