linux-kernel - [PATCH 1/3] EDAC/i10nm: Add Intel Granite Rapids-D support

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Message-ID: <20250704151609.7833-2-qiuxu.zhuo@intel.com>
Date: Fri,  4 Jul 2025 23:16:07 +0800
From: Qiuxu Zhuo <qiuxu.zhuo@...el.com>
To: Tony Luck <tony.luck@...el.com>,
	Borislav Petkov <bp@...en8.de>
Cc: Qiuxu Zhuo <qiuxu.zhuo@...el.com>,
	VikasX Chougule <vikasx.chougule@...el.com>,
	James Morse <james.morse@....com>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	Robert Richter <rric@...nel.org>,
	Lili Li <lili.li@...el.com>,
	Laurens SEGHERS <laurens@...e.com>,
	linux-edac@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 1/3] EDAC/i10nm: Add Intel Granite Rapids-D support

The Granite Rapids-D CPU model uses memory controller registers similar
to those of the Granite Rapids server CPU but with a different memory
controller MMIO base.

Add the Granite Rapids-D CPU model ID and use the new memory controller
MMIO base for EDAC support.

Tested-by: VikasX Chougule <vikasx.chougule@...el.com>
Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@...el.com>
---
 drivers/edac/i10nm_base.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/edac/i10nm_base.c b/drivers/edac/i10nm_base.c
index a3fca2567752..c1e45c16f70e 100644
--- a/drivers/edac/i10nm_base.c
+++ b/drivers/edac/i10nm_base.c
@@ -62,6 +62,7 @@
 	((GET_BITFIELD(reg, 0, 10) << 12) + 0x140000)
 
 #define I10NM_GNR_IMC_MMIO_OFFSET	0x24c000
+#define I10NM_GNR_D_IMC_MMIO_OFFSET	0x206000
 #define I10NM_GNR_IMC_MMIO_SIZE		0x4000
 #define I10NM_HBM_IMC_MMIO_SIZE		0x9000
 #define I10NM_DDR_IMC_CH_CNT(reg)	GET_BITFIELD(reg, 21, 24)
@@ -687,6 +688,14 @@ static struct pci_dev *get_gnr_mdev(struct skx_dev *d, int logical_idx, int *phy
 	return NULL;
 }
 
+static u32 get_gnr_imc_mmio_offset(void)
+{
+	if (boot_cpu_data.x86_vfm == INTEL_GRANITERAPIDS_D)
+		return I10NM_GNR_D_IMC_MMIO_OFFSET;
+
+	return I10NM_GNR_IMC_MMIO_OFFSET;
+}
+
 /**
  * get_ddr_munit() - Get the resource of the i-th DDR memory controller.
  *
@@ -715,7 +724,7 @@ static struct pci_dev *get_ddr_munit(struct skx_dev *d, int i, u32 *offset, unsi
 			return NULL;
 
 		*offset = I10NM_GET_IMC_MMIO_OFFSET(reg) +
-			  I10NM_GNR_IMC_MMIO_OFFSET +
+			  get_gnr_imc_mmio_offset() +
 			  physical_idx * I10NM_GNR_IMC_MMIO_SIZE;
 		*size   = I10NM_GNR_IMC_MMIO_SIZE;
 
@@ -1030,6 +1039,7 @@ static const struct x86_cpu_id i10nm_cpuids[] = {
 	X86_MATCH_VFM(INTEL_SAPPHIRERAPIDS_X, &spr_cfg),
 	X86_MATCH_VFM(INTEL_EMERALDRAPIDS_X,  &spr_cfg),
 	X86_MATCH_VFM(INTEL_GRANITERAPIDS_X,  &gnr_cfg),
+	X86_MATCH_VFM(INTEL_GRANITERAPIDS_D,  &gnr_cfg),
 	X86_MATCH_VFM(INTEL_ATOM_CRESTMONT_X, &gnr_cfg),
 	X86_MATCH_VFM(INTEL_ATOM_CRESTMONT,   &gnr_cfg),
 	X86_MATCH_VFM(INTEL_ATOM_DARKMONT_X,  &gnr_cfg),
-- 
2.43.0