82 lines
1.7 KiB
C
82 lines
1.7 KiB
C
|
// SPDX-License-Identifier: MIT
|
||
|
|
/*
|
||
|
|
* Copyright © 2021 Intel Corporation
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/string_helpers.h>
|
||
|
|
|
||
|
|
#include "intel_guc_rc.h"
|
||
|
|
#include "gt/intel_gt.h"
|
||
|
|
#include "i915_drv.h"
|
||
|
|
|
||
|
|
static bool __guc_rc_supported(struct intel_guc *guc)
|
||
|
|
{
|
||
|
|
/* GuC RC is unavailable for pre-Gen12 */
|
||
|
|
return guc->submission_supported &&
|
||
|
|
GRAPHICS_VER(guc_to_gt(guc)->i915) >= 12;
|
||
|
|
}
|
||
|
|
|
||
|
|
static bool __guc_rc_selected(struct intel_guc *guc)
|
||
|
|
{
|
||
|
|
if (!intel_guc_rc_is_supported(guc))
|
||
|
|
return false;
|
||
|
|
|
||
|
|
return guc->submission_selected;
|
||
|
|
}
|
||
|
|
|
||
|
|
void intel_guc_rc_init_early(struct intel_guc *guc)
|
||
|
|
{
|
||
|
|
guc->rc_supported = __guc_rc_supported(guc);
|
||
|
|
guc->rc_selected = __guc_rc_selected(guc);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int guc_action_control_gucrc(struct intel_guc *guc, bool enable)
|
||
|
|
{
|
||
|
|
u32 rc_mode = enable ? INTEL_GUCRC_FIRMWARE_CONTROL :
|
||
|
|
INTEL_GUCRC_HOST_CONTROL;
|
||
|
|
u32 action[] = {
|
||
|
|
INTEL_GUC_ACTION_SETUP_PC_GUCRC,
|
||
|
|
rc_mode
|
||
|
|
};
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
ret = intel_guc_send(guc, action, ARRAY_SIZE(action));
|
||
|
|
ret = ret > 0 ? -EPROTO : ret;
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int __guc_rc_control(struct intel_guc *guc, bool enable)
|
||
|
|
{
|
||
|
|
struct intel_gt *gt = guc_to_gt(guc);
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
if (!intel_uc_uses_guc_rc(>->uc))
|
||
|
|
return -EOPNOTSUPP;
|
||
|
|
|
||
|
|
if (!intel_guc_is_ready(guc))
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
ret = guc_action_control_gucrc(guc, enable);
|
||
|
|
if (ret) {
|
||
|
|
i915_probe_error(guc_to_gt(guc)->i915, "Failed to %s GuC RC (%pe)\n",
|
||
|
|
str_enable_disable(enable), ERR_PTR(ret));
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
drm_info(>->i915->drm, "GuC RC: %s\n",
|
||
|
|
str_enabled_disabled(enable));
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int intel_guc_rc_enable(struct intel_guc *guc)
|
||
|
|
{
|
||
|
|
return __guc_rc_control(guc, true);
|
||
|
|
}
|
||
|
|
|
||
|
|
int intel_guc_rc_disable(struct intel_guc *guc)
|
||
|
|
{
|
||
|
|
return __guc_rc_control(guc, false);
|
||
|
|
}
|