From: Badal Nilawar <badal.nilawar@xxxxxxxxx>
Add support for C6 residency and C state type for MTL SAMedia. Also add
mtl_drpc.
v2: Fixed review comments (Ashutosh)
v3: Sort registers and fix whitespace errors in intel_gt_regs.h (Matt R)
Remove MTL_CC_SHIFT (Ashutosh)
Adapt to RC6 residency register code refactor (Jani N)
v4: Move MTL branch to top in drpc_show
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@xxxxxxxxx>
Signed-off-by: Badal Nilawar <badal.nilawar@xxxxxxxxx>
---
drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c | 60 ++++++++++++++++++-
drivers/gpu/drm/i915/gt/intel_gt_regs.h | 5 ++
drivers/gpu/drm/i915/gt/intel_rc6.c | 17 ++++--
3 files changed, 77 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c b/drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c
index 235d593cfaeba..c88d8ec62b692 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c
@@ -256,6 +256,62 @@ static int ilk_drpc(struct seq_file *m)
return 0;
}
+static int mtl_drpc(struct seq_file *m)
+{
+ struct intel_gt *gt = m->private;
+ struct intel_uncore *uncore = gt->uncore;
+ u32 gt_core_status, rcctl1, global_forcewake;
+ u32 mtl_powergate_enable = 0, mtl_powergate_status = 0;
+
+ gt_core_status = intel_uncore_read(uncore, MTL_MIRROR_TARGET_WP1);
+
+ global_forcewake = intel_uncore_read(uncore, FORCEWAKE_GT_GEN9);
+
+ rcctl1 = intel_uncore_read(uncore, GEN6_RC_CONTROL);
+ mtl_powergate_enable = intel_uncore_read(uncore, GEN9_PG_ENABLE);
+ mtl_powergate_status = intel_uncore_read(uncore,
+ GEN9_PWRGT_DOMAIN_STATUS);
+
+ seq_printf(m, "RC6 Enabled: %s\n",
+ str_yes_no(rcctl1 & GEN6_RC_CTL_RC6_ENABLE));
+ if (gt->type == GT_MEDIA) {
+ seq_printf(m, "Media Well Gating Enabled: %s\n",
+ str_yes_no(mtl_powergate_enable & GEN9_MEDIA_PG_ENABLE));
+ } else {
+ seq_printf(m, "Render Well Gating Enabled: %s\n",
+ str_yes_no(mtl_powergate_enable & GEN9_RENDER_PG_ENABLE));
+ }
+
+ seq_puts(m, "Current RC state: ");
+ switch (REG_FIELD_GET(MTL_CC_MASK, gt_core_status)) {
+ case MTL_CC0:
+ seq_puts(m, "on\n");
+ break;
+ case MTL_CC6:
+ seq_puts(m, "RC6\n");
+ break;
+ default:
+ seq_puts(m, "Unknown\n");
+ break;
+ }
+
+ if (gt->type == GT_MEDIA)
+ seq_printf(m, "Media Power Well: %s\n",
+ (mtl_powergate_status &
+ GEN9_PWRGT_MEDIA_STATUS_MASK) ? "Up" : "Down");
+ else
+ seq_printf(m, "Render Power Well: %s\n",
+ (mtl_powergate_status &
+ GEN9_PWRGT_RENDER_STATUS_MASK) ? "Up" : "Down");
+
+ /* Works for both render and media gt's */
+ intel_rc6_print_residency(m, "RC6 residency since boot:", INTEL_RC6_RES_RC6);
+
+ seq_printf(m, "Global Forcewake Requests: 0x%x\n", global_forcewake);
+
+ return fw_domains_show(m, NULL);
+}
+
static int drpc_show(struct seq_file *m, void *unused)
{
struct intel_gt *gt = m->private;
@@ -264,7 +320,9 @@ static int drpc_show(struct seq_file *m, void *unused)
int err = -ENODEV;
with_intel_runtime_pm(gt->uncore->rpm, wakeref) {
- if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915))
+ if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 70))
+ err = mtl_drpc(m);
+ else if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915))
err = vlv_drpc(m);
else if (GRAPHICS_VER(i915) >= 6)
err = gen6_drpc(m);
diff --git a/drivers/gpu/drm/i915/gt/intel_gt_regs.h b/drivers/gpu/drm/i915/gt/intel_gt_regs.h
index b4b1b54ad738f..9f168867eb8ae 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt_regs.h
+++ b/drivers/gpu/drm/i915/gt/intel_gt_regs.h
@@ -24,6 +24,9 @@
/* MTL workpoint reg to get core C state and actual freq of 3D, SAMedia */
#define MTL_MIRROR_TARGET_WP1 _MMIO(0xc60)
#define MTL_CAGF_MASK REG_GENMASK(8, 0)
+#define MTL_CC0 0x0
+#define MTL_CC6 0x3
+#define MTL_CC_MASK REG_GENMASK(12, 9)
/* RPM unit config (Gen8+) */
#define RPM_CONFIG0 _MMIO(0xd00)
@@ -1516,6 +1519,8 @@
#define FORCEWAKE_MEDIA_VLV _MMIO(0x1300b8)
#define FORCEWAKE_ACK_MEDIA_VLV _MMIO(0x1300bc)
+#define MTL_MEDIA_MC6 _MMIO(0x138048)
+
#define GEN6_GT_THREAD_STATUS_REG _MMIO(0x13805c)
#define GEN6_GT_THREAD_STATUS_CORE_MASK 0x7
diff --git a/drivers/gpu/drm/i915/gt/intel_rc6.c b/drivers/gpu/drm/i915/gt/intel_rc6.c
index 6db4e60d5fba5..2ee4051e4d961 100644
--- a/drivers/gpu/drm/i915/gt/intel_rc6.c
+++ b/drivers/gpu/drm/i915/gt/intel_rc6.c
@@ -553,10 +553,19 @@ static void __intel_rc6_disable(struct intel_rc6 *rc6)
static void rc6_res_reg_init(struct intel_rc6 *rc6)
{
- rc6->res_reg[INTEL_RC6_RES_RC6_LOCKED] = GEN6_GT_GFX_RC6_LOCKED;
- rc6->res_reg[INTEL_RC6_RES_RC6] = GEN6_GT_GFX_RC6;
- rc6->res_reg[INTEL_RC6_RES_RC6p] = GEN6_GT_GFX_RC6p;
- rc6->res_reg[INTEL_RC6_RES_RC6pp] = GEN6_GT_GFX_RC6pp;
+ memset(rc6->res_reg, INVALID_MMIO_REG.reg, sizeof(rc6->res_reg));
+
+ switch (rc6_to_gt(rc6)->type) {
+ case GT_MEDIA:
+ rc6->res_reg[INTEL_RC6_RES_RC6] = MTL_MEDIA_MC6;
+ break;
+ default:
+ rc6->res_reg[INTEL_RC6_RES_RC6_LOCKED] = GEN6_GT_GFX_RC6_LOCKED;
+ rc6->res_reg[INTEL_RC6_RES_RC6] = GEN6_GT_GFX_RC6;
+ rc6->res_reg[INTEL_RC6_RES_RC6p] = GEN6_GT_GFX_RC6p;
+ rc6->res_reg[INTEL_RC6_RES_RC6pp] = GEN6_GT_GFX_RC6pp;
+ break;
+ }
}
void intel_rc6_init(struct intel_rc6 *rc6)
--
2.38.0
