From 2f7c68cb55ecb7331f2381deb497c27155f32faf Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 03 Jan 2024 09:43:39 +0000
Subject: [PATCH] update kernel to 5.10.198
---
kernel/drivers/gpu/drm/i915/intel_dram.c | 82 ++++++++++++++++++++++++++++++++++++++++
1 files changed, 81 insertions(+), 1 deletions(-)
diff --git a/kernel/drivers/gpu/drm/i915/intel_dram.c b/kernel/drivers/gpu/drm/i915/intel_dram.c
index 8aa12ca..26e109c 100644
--- a/kernel/drivers/gpu/drm/i915/intel_dram.c
+++ b/kernel/drivers/gpu/drm/i915/intel_dram.c
@@ -5,6 +5,7 @@
#include "i915_drv.h"
#include "intel_dram.h"
+#include "intel_sideband.h"
struct dram_dimm_info {
u8 size, width, ranks;
@@ -433,6 +434,81 @@
return 0;
}
+static int icl_pcode_read_mem_global_info(struct drm_i915_private *dev_priv)
+{
+ struct dram_info *dram_info = &dev_priv->dram_info;
+ u32 val = 0;
+ int ret;
+
+ ret = sandybridge_pcode_read(dev_priv,
+ ICL_PCODE_MEM_SUBSYSYSTEM_INFO |
+ ICL_PCODE_MEM_SS_READ_GLOBAL_INFO,
+ &val, NULL);
+ if (ret)
+ return ret;
+
+ if (IS_GEN(dev_priv, 12)) {
+ switch (val & 0xf) {
+ case 0:
+ dram_info->type = INTEL_DRAM_DDR4;
+ break;
+ case 3:
+ dram_info->type = INTEL_DRAM_LPDDR4;
+ break;
+ case 4:
+ dram_info->type = INTEL_DRAM_DDR3;
+ break;
+ case 5:
+ dram_info->type = INTEL_DRAM_LPDDR3;
+ break;
+ default:
+ MISSING_CASE(val & 0xf);
+ return -1;
+ }
+ } else {
+ switch (val & 0xf) {
+ case 0:
+ dram_info->type = INTEL_DRAM_DDR4;
+ break;
+ case 1:
+ dram_info->type = INTEL_DRAM_DDR3;
+ break;
+ case 2:
+ dram_info->type = INTEL_DRAM_LPDDR3;
+ break;
+ case 3:
+ dram_info->type = INTEL_DRAM_LPDDR4;
+ break;
+ default:
+ MISSING_CASE(val & 0xf);
+ return -1;
+ }
+ }
+
+ dram_info->num_channels = (val & 0xf0) >> 4;
+ dram_info->num_qgv_points = (val & 0xf00) >> 8;
+
+ return 0;
+}
+
+static int gen11_get_dram_info(struct drm_i915_private *i915)
+{
+ int ret = skl_get_dram_info(i915);
+
+ if (ret)
+ return ret;
+
+ return icl_pcode_read_mem_global_info(i915);
+}
+
+static int gen12_get_dram_info(struct drm_i915_private *i915)
+{
+ /* Always needed for GEN12+ */
+ i915->dram_info.is_16gb_dimm = true;
+
+ return icl_pcode_read_mem_global_info(i915);
+}
+
void intel_dram_detect(struct drm_i915_private *i915)
{
struct dram_info *dram_info = &i915->dram_info;
@@ -448,7 +524,11 @@
if (INTEL_GEN(i915) < 9 || !HAS_DISPLAY(i915))
return;
- if (IS_GEN9_LP(i915))
+ if (INTEL_GEN(i915) >= 12)
+ ret = gen12_get_dram_info(i915);
+ else if (INTEL_GEN(i915) >= 11)
+ ret = gen11_get_dram_info(i915);
+ else if (IS_GEN9_LP(i915))
ret = bxt_get_dram_info(i915);
else
ret = skl_get_dram_info(i915);
--
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