hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

drm/i915/bdw: Macro for LRCs and module option for Execlists 

GEN8 brings an expansion of the HW contexts: "Logical Ring Contexts".
These expanded contexts enable a number of new abilities, especially
"Execlists".

The macro is defined to off until we have things in place to hope to
work.

v2: Rename "advanced contexts" to the more correct "logical ring
contexts".

v3: Add a module parameter to enable execlists. Execlist are relatively
new, and so it'd be wise to be able to switch back to ring submission
to debug subtle problems that will inevitably arise.

v4: Add an intel_enable_execlists function.

v5: Sanitize early, as suggested by Daniel. Remove lrc_enabled.

Signed-off-by: Ben Widawsky <ben@bwidawsk.net> (v1)
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com> (v3)
Signed-off-by: Oscar Mateo <oscar.mateo@intel.com> (v2, v4 & v5)
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Oscar Mateo 2014-07-24 17:04:11 +01:00 committed by Daniel Vetter
parent b20385f1f8
commit 127f100369
5 changed files with 25 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/gpu/drm/i915/i915_drv.h
View File

@ -2062,6 +2062,7 @@ struct drm_i915_cmd_table {
#define I915_NEED_GFX_HWS(dev) (INTEL_INFO(dev)->need_gfx_hws)
#define HAS_HW_CONTEXTS(dev) (INTEL_INFO(dev)->gen >= 6)
#define HAS_LOGICAL_RING_CONTEXTS(dev) 0
#define HAS_ALIASING_PPGTT(dev) (INTEL_INFO(dev)->gen >= 6)
#define HAS_PPGTT(dev) (INTEL_INFO(dev)->gen >= 7 && !IS_GEN8(dev))
#define USES_PPGTT(dev) (i915.enable_ppgtt)
@ -2149,6 +2150,7 @@ struct i915_params {
int enable_rc6;
int enable_fbc;
int enable_ppgtt;
int enable_execlists;
int enable_psr;
unsigned int preliminary_hw_support;
int disable_power_well;

3
drivers/gpu/drm/i915/i915_gem.c
View File

@ -4723,6 +4723,9 @@ int i915_gem_init(struct drm_device *dev)
struct drm_i915_private *dev_priv = dev->dev_private;
int ret;
i915.enable_execlists = intel_sanitize_enable_execlists(dev,
i915.enable_execlists);
mutex_lock(&dev->struct_mutex);
if (IS_VALLEYVIEW(dev)) {

6
drivers/gpu/drm/i915/i915_params.c
View File

@ -35,6 +35,7 @@ struct i915_params i915 __read_mostly = {
.vbt_sdvo_panel_type = -1,
.enable_rc6 = -1,
.enable_fbc = -1,
.enable_execlists = -1,
.enable_hangcheck = true,
.enable_ppgtt = -1,
.enable_psr = 1,
@ -118,6 +119,11 @@ MODULE_PARM_DESC(enable_ppgtt,
"Override PPGTT usage. "
"(-1=auto [default], 0=disabled, 1=aliasing, 2=full)");
module_param_named(enable_execlists, i915.enable_execlists, int, 0400);
MODULE_PARM_DESC(enable_execlists,
"Override execlists usage. "
"(-1=auto [default], 0=disabled, 1=enabled)");
module_param_named(enable_psr, i915.enable_psr, int, 0600);
MODULE_PARM_DESC(enable_psr, "Enable PSR (default: true)");

11
drivers/gpu/drm/i915/intel_lrc.c
View File

@ -40,3 +40,14 @@
#include <drm/drmP.h>
#include <drm/i915_drm.h>
#include "i915_drv.h"
int intel_sanitize_enable_execlists(struct drm_device *dev, int enable_execlists)
{
if (enable_execlists == 0)
return 0;
if (HAS_LOGICAL_RING_CONTEXTS(dev) && USES_PPGTT(dev))
return 1;
return 0;
}

3
drivers/gpu/drm/i915/intel_lrc.h
View File

@ -24,4 +24,7 @@
#ifndef _INTEL_LRC_H_
#define _INTEL_LRC_H_
/* Execlists */
int intel_sanitize_enable_execlists(struct drm_device *dev, int enable_execlists);
#endif /* _INTEL_LRC_H_ */