From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f173.google.com (mail-pl1-f173.google.com [209.85.214.173]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B72E02690C0 for ; Mon, 18 Aug 2025 04:58:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.173 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755493098; cv=none; b=PiaJ60Dp21zhePwH+urhi2mESaIIMxydcHIu9kz+KoyZJ03inDzjjMdbIEm8NXcpws9ivHSusJ3B8fKQ3PVYEsRL+HA6YOEkVRTXqTb0Kev6zYa5e++ebhuRQ5JyXicARBUxNwo4mHTscSGDnhkUYPrLdc6lEerDkmLxlMb3zp0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755493098; c=relaxed/simple; bh=uWmg/md3Uur5G0azfupdlm5O0QlvtlmbG7Yvpw9yQX4=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=OjXGF51vpt7vcqDNAYgm+nyIYKSdL6cTZoa8CoMyErVBV7ZF1rOI2V+s+o3KHkEcbmKXmtQk21ZuAoSUkZWXkOLVn3GmG4lH600gCNYFFJK7VYLvnW0EGbLq8LQBgjf3Ucnq8nWd89yPchRoSHHTaLo0/0VO7wSP2arvXmLSUhM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ventanamicro.com; spf=pass smtp.mailfrom=ventanamicro.com; dkim=pass (2048-bit key) header.d=ventanamicro.com header.i=@ventanamicro.com header.b=YKomWJQC; arc=none smtp.client-ip=209.85.214.173 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ventanamicro.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ventanamicro.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ventanamicro.com header.i=@ventanamicro.com header.b="YKomWJQC" Received: by mail-pl1-f173.google.com with SMTP id d9443c01a7336-244581cc971so44551375ad.2 for ; Sun, 17 Aug 2025 21:58:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1755493096; x=1756097896; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=E3V/meoXkl+wsGtPedKQJxOsDVawZ6HAz5fY7bg7lxk=; b=YKomWJQCVQbP2laEtnHM/dTCuEN2DiNZWbLNLN65ci1VpfgltyDkUeEK2Ts0MkNsXJ ai5DC2/086zs1qwo91DTxXW49Hzkmm2pqMo/WmORynKGJWw9ojBR1Ba59TYUVrH5SFcv A8++dAdrtxccWkOOVDY/m721gVcAz+/pGW2cLUxXKvb3YGv++MMkqn/LygHey68VPXHd j2qm7ZpzkOPB/xJSMyNPQIGWQPb9miVlzWD7uLUg2jnEkHkLo52pP2dxGt7a1o1T2+ks I34Us8ziBCRPGJYYlATDnph175iMRN37ZByqAyp2NGIZ7ME//JKhu4CchuV4nWXgak8E L4yg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1755493096; x=1756097896; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=E3V/meoXkl+wsGtPedKQJxOsDVawZ6HAz5fY7bg7lxk=; b=eoM5i5A3Sa3ubSx9H/8cWn4V/RmK2O6hTwYZOLtPSb9rc7oxkiMIIVESQJlFHI9ZwX 4qp+h+pq5827Ey3bXx5C7iKtR47JVV2t7anfG5DTcyo8B+Tgbi2SnbvCI/tgEfcbA6J1 ispY4Ayw7IiZRgaCdjNBlsw9xjvEIziaDFF1fu3TZkM1HhtwombmVzuSZElkvufd+3IO hyigclqFfUHab04OSsv3kPTfvUeXBSf34dD7fRdNA8pmVwEukDOhaJLziDzrIBrZEDwN ZJ6RmDETVoyDt4zb43d7CSDWhX19a6A0EHCBwgMGHZOwTHlaNILnMBw8o28pBJoI16Oa q39A== X-Gm-Message-State: AOJu0YyBjQXqn2i5cVjEp2ZVU10U71x9q+B6NjfTMjuvjiRi4QVFT7bz gHLSOzzS2SfxxdfpI5/RmZ4DbZxSLuMqh6qv/LgdiCCoT35tUcZ3L4wEJRFLByp7Pu03QNBQlUS 7K4WId+8= X-Gm-Gg: ASbGncu3HKoT9LfjFzgVwcjxWT2/h9LWc1GJNzDa9VCmbSGm6YRanI0mzNLFNW8J8aL kq+jxewIBMClEOknRFILh1m3OUaUihLmKrQ8bMc99JVRlpJCyGAIiGaQa+cMsAV8P39RqC0dkwV bNsbHFd/cDu34WV99w7rbrjfjq4BqIM5UjINJ8KJKxsKBZqNhDikMIzhx80m0KJUhru0ErJJdIQ U7WAvxmiahb05kTNFVL5DhiMTeIwD7ThN2ONRk6wGRtppAnmeH9BIfQIE6k9Xsye2N4rmIkvOEb RyZiZczYrUOuXTXOwRL0+OLcI5umAf32Ci4g0n6mUMnPIRBowXgqzNI+9h6kvAbUbaM20adppuB 4HJtKOWwogfEjIo+/IMEgr+azCnSaYw== X-Google-Smtp-Source: AGHT+IFCk2BSwqNgThH6PEkau6i2nlNB+untLX8ay7e+tXj4jOXYDkG8+9f1odmZ7Mh1rjQjGkHVpw== X-Received: by 2002:a17:903:b07:b0:243:7cf:9bcf with SMTP id d9443c01a7336-2446d71ab96mr143054605ad.2.1755493095547; Sun, 17 Aug 2025 21:58:15 -0700 (PDT) Received: from sunil-pc.Dlink ([106.51.199.3]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-76e4528c264sm6124047b3a.43.2025.08.17.21.58.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 17 Aug 2025 21:58:14 -0700 (PDT) From: Sunil V L To: linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-acpi@vger.kernel.org, iommu@lists.linux.dev Cc: Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , "Rafael J . Wysocki" , Len Brown , Tomasz Jeznach , Joerg Roedel , Will Deacon , Robin Murphy , Sunil V L Subject: [PATCH v6 0/3] RISC-V: Add ACPI support for IOMMU Date: Mon, 18 Aug 2025 10:28:04 +0530 Message-ID: <20250818045807.763922-1-sunilvl@ventanamicro.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This series adds support for RISC-V IOMMU on ACPI based platforms. RISC-V IO Mapping Table (RIMT) is a new static ACPI table [1] introduced to communicate IOMMU information to the OS. [1] - https://github.com/riscv-non-isa/riscv-acpi-rimt/releases/download/v1.0/rimt-spec.pdf Changes since v5: 1) Rebased to 6.17-rc2 2) Fixed incorrect id_out assignment (Reported by Xianliang) Changes since v4: 1) Rebased to 6.16-rc6 2) Addressed Anup's feedback on formatting. 3) Added RB tag from Will and Anup. Changes since v3: 1) Rebased to 6.16-rc5 2) Addressed Drew's feedback on v3. a) Reordered calling rimt_iommu_configure_id(). b) Removed unnecessary inline. c) Added pr_fmt. d) Removed redundant rimt_iommu_configure_id() stub. 3) Added Drew's RB tag in PATCH 3. Changes since v2: 1) Rebased to 6.16-rc4 2) Removed Anup's SOB and link tags added by mistake in v2. Changes since v1: 1) Rebased to v6.16-rc1. 2) Dropped ACPICA patch since it is already available in 6.16-rc1. 3) Added Rafael's ACK. 4) Fixed few issues found by bots. Sunil V L (3): ACPI: RISC-V: Add support for RIMT ACPI: scan: Add support for RISC-V in acpi_iommu_configure_id() iommu/riscv: Add ACPI support MAINTAINERS | 1 + arch/riscv/Kconfig | 1 + drivers/acpi/Kconfig | 4 + drivers/acpi/riscv/Kconfig | 7 + drivers/acpi/riscv/Makefile | 1 + drivers/acpi/riscv/init.c | 2 + drivers/acpi/riscv/init.h | 1 + drivers/acpi/riscv/rimt.c | 520 +++++++++++++++++++++++++++ drivers/acpi/scan.c | 4 + drivers/iommu/riscv/iommu-platform.c | 17 +- drivers/iommu/riscv/iommu.c | 10 + include/linux/acpi_rimt.h | 28 ++ 12 files changed, 595 insertions(+), 1 deletion(-) create mode 100644 drivers/acpi/riscv/Kconfig create mode 100644 drivers/acpi/riscv/rimt.c create mode 100644 include/linux/acpi_rimt.h -- 2.43.0