Just seen a documentation error in program_mocs_l3cc_table() still
documents a parameter that has been removed. Will fix later.
Peter.
On Fri, 11 Mar 2016, Peter Antoine wrote:
Hi Chris,
Just posted patch that moves to the engine->init_hw().
Have moved the L3CC registers programming out of the function and left in the
same place as the original function was. These registers are shared with all
engines.
Peter.
On Thu, 10 Mar 2016, Chris Wilson wrote:
On Thu, Mar 10, 2016 at 08:22:58PM +0000, Peter Antoine wrote:
Allow for the MOCS to be programmed for all engines.
Currently we program the MOCS when the first render batch
goes through. This works on most platforms but fails on
platforms that do not run a render batch early,
i.e. headless servers. The patch now programs all initialised engines
on init and the RCS is programmed again within the initial batch. This
is done for predictable consistency with regards to the hardware
context.
Hardware context loading sets the values of the MOCS for RCS
and L3CC. Programming them from within the batch makes sure that
the render context is valid, no matter what the previous state of
the saved-context was.
Signed-off-by: Peter Antoine <peter.antoine@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_gem.c | 3 +
drivers/gpu/drm/i915/intel_mocs.c | 138
++++++++++++++++++++++++++++++++++----
drivers/gpu/drm/i915/intel_mocs.h | 1 +
3 files changed, 130 insertions(+), 12 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_gem.c
b/drivers/gpu/drm/i915/i915_gem.c
index b854af2..05c9fcb 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -32,6 +32,7 @@
#include "i915_vgpu.h"
#include "i915_trace.h"
#include "intel_drv.h"
+#include "intel_mocs.h"
#include <linux/shmem_fs.h>
#include <linux/slab.h>
#include <linux/swap.h>
@@ -4882,6 +4883,8 @@ i915_gem_init_hw(struct drm_device *dev)
goto out;
}
+ intel_program_mocs_engines(dev);
Registers to be written when enabling the engine are called from
engine->init_hw() in the line above. Please add this state there, which
can then be specialised via vfunc if so desired.
-Chris
--
Peter Antoine (Android Graphics Driver Software Engineer)
---------------------------------------------------------------------
Intel Corporation (UK) Limited
Registered No. 1134945 (England)
Registered Office: Pipers Way, Swindon SN3 1RJ
VAT No: 860 2173 47
--
Peter Antoine (Android Graphics Driver Software Engineer)
---------------------------------------------------------------------
Intel Corporation (UK) Limited
Registered No. 1134945 (England)
Registered Office: Pipers Way, Swindon SN3 1RJ
VAT No: 860 2173 47
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