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ammgws/biostar_b660gtn_iommu_groups.md

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Biostar B660GTN IOMMU groups
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biostar_b660gtn_iommu_groups.md

With iGPU disabled in BIOS and a dedicated GPU in the one and only PCI slot:

>lsiommu                                                                                                                      0|16:55:43
IOMMU Group 0:
	00:00.0 Host bridge [0600]: Intel Corporation Device [8086:4650] (rev 02)
IOMMU Group 1:
	00:01.0 PCI bridge [0604]: Intel Corporation 12th Gen Core Processor PCI Express x16 Controller #1 [8086:460d] (rev 02)
IOMMU Group 2:
	00:06.0 PCI bridge [0604]: Intel Corporation 12th Gen Core Processor PCI Express x4 Controller #0 [8086:464d] (rev 02)
IOMMU Group 3:
	00:0a.0 Signal processing controller [1180]: Intel Corporation Platform Monitoring Technology [8086:467d] (rev 01)
IOMMU Group 4:
	00:14.0 USB controller [0c03]: Intel Corporation Alder Lake-S PCH USB 3.2 Gen 2x2 XHCI Controller [8086:7ae0] (rev 11)
	00:14.2 RAM memory [0500]: Intel Corporation Alder Lake-S PCH Shared SRAM [8086:7aa7] (rev 11)
IOMMU Group 5:
	00:15.0 Serial bus controller [0c80]: Intel Corporation Alder Lake-S PCH I2C Controller #0 [8086:7acc] (rev 11)
	00:15.1 Serial bus controller [0c80]: Intel Corporation Device [8086:7acd] (rev 11)
IOMMU Group 6:
	00:16.0 Communication controller [0780]: Intel Corporation Alder Lake-S PCH HECI Controller #1 [8086:7ae8] (rev 11)
IOMMU Group 7:
	00:17.0 SATA controller [0106]: Intel Corporation Alder Lake-S PCH SATA Controller [AHCI Mode] [8086:7ae2] (rev 11)
IOMMU Group 8:
	00:1d.0 PCI bridge [0604]: Intel Corporation Device [8086:7ab6] (rev 11)
IOMMU Group 9:
	00:1f.0 ISA bridge [0601]: Intel Corporation Device [8086:7a86] (rev 11)
	00:1f.3 Audio device [0403]: Intel Corporation Alder Lake-S HD Audio Controller [8086:7ad0] (rev 11)
	00:1f.4 SMBus [0c05]: Intel Corporation Alder Lake-S PCH SMBus Controller [8086:7aa3] (rev 11)
	00:1f.5 Serial bus controller [0c80]: Intel Corporation Alder Lake-S PCH SPI Controller [8086:7aa4] (rev 11)
IOMMU Group 10:
	01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Ellesmere [Radeon RX 470/480/570/570X/580/580X/590] [1002:67df] (rev ef)
	01:00.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] Ellesmere HDMI Audio [Radeon RX 470/480 / 570/580/590] [1002:aaf0]
IOMMU Group 11:
	02:00.0 Non-Volatile memory controller [0108]: Phison Electronics Corporation E12 NVMe Controller [1987:5012] (rev 01)
IOMMU Group 12:
	03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller [10ec:8125] (rev 05)
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ammgws commented Mar 22, 2022 •
edited

With iGPU enabled in BIOS and a dedicated GPU in the one and only PCI slot:

>lsiommu
IOMMU Group 0:
	00:00.0 Host bridge [0600]: Intel Corporation Device [8086:4650] (rev 02)
IOMMU Group 1:
	00:01.0 PCI bridge [0604]: Intel Corporation 12th Gen Core Processor PCI Express x16 Controller #1 [8086:460d] (rev 02)
IOMMU Group 2:
	00:02.0 VGA compatible controller [0300]: Intel Corporation Device [8086:4682] (rev 0c)
IOMMU Group 3:
	00:06.0 PCI bridge [0604]: Intel Corporation 12th Gen Core Processor PCI Express x4 Controller #0 [8086:464d] (rev 02)
IOMMU Group 4:
	00:0a.0 Signal processing controller [1180]: Intel Corporation Platform Monitoring Technology [8086:467d] (rev 01)
IOMMU Group 5:
	00:14.0 USB controller [0c03]: Intel Corporation Alder Lake-S PCH USB 3.2 Gen 2x2 XHCI Controller [8086:7ae0] (rev 11)
	00:14.2 RAM memory [0500]: Intel Corporation Alder Lake-S PCH Shared SRAM [8086:7aa7] (rev 11)
IOMMU Group 6:
	00:15.0 Serial bus controller [0c80]: Intel Corporation Alder Lake-S PCH I2C Controller #0 [8086:7acc] (rev 11)
	00:15.1 Serial bus controller [0c80]: Intel Corporation Device [8086:7acd] (rev 11)
IOMMU Group 7:
	00:16.0 Communication controller [0780]: Intel Corporation Alder Lake-S PCH HECI Controller #1 [8086:7ae8] (rev 11)
IOMMU Group 8:
	00:17.0 SATA controller [0106]: Intel Corporation Alder Lake-S PCH SATA Controller [AHCI Mode] [8086:7ae2] (rev 11)
IOMMU Group 9:
	00:1d.0 PCI bridge [0604]: Intel Corporation Device [8086:7ab6] (rev 11)
IOMMU Group 10:
	00:1f.0 ISA bridge [0601]: Intel Corporation Device [8086:7a86] (rev 11)
	00:1f.3 Audio device [0403]: Intel Corporation Alder Lake-S HD Audio Controller [8086:7ad0] (rev 11)
	00:1f.4 SMBus [0c05]: Intel Corporation Alder Lake-S PCH SMBus Controller [8086:7aa3] (rev 11)
	00:1f.5 Serial bus controller [0c80]: Intel Corporation Alder Lake-S PCH SPI Controller [8086:7aa4] (rev 11)
IOMMU Group 11:
	01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Ellesmere [Radeon RX 470/480/570/570X/580/580X/590] [1002:67df] (rev ef)
	01:00.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] Ellesmere HDMI Audio [Radeon RX 470/480 / 570/580/590] [1002:aaf0]
IOMMU Group 12:
	02:00.0 Non-Volatile memory controller [0108]: Phison Electronics Corporation E12 NVMe Controller [1987:5012] (rev 01)
IOMMU Group 13:
	03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller [10ec:8125] (rev 05)

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