From patchwork Tue Mar 30 08:20:06 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eduard - Gabriel Munteanu X-Patchwork-Id: 89250 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter.kernel.org (8.14.3/8.14.3) with ESMTP id o2U8Kh8j006231 for ; Tue, 30 Mar 2010 08:20:43 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755867Ab0C3IUk (ORCPT ); Tue, 30 Mar 2010 04:20:40 -0400 Received: from mail-bw0-f209.google.com ([209.85.218.209]:41750 "EHLO mail-bw0-f209.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755859Ab0C3IU2 (ORCPT ); Tue, 30 Mar 2010 04:20:28 -0400 Received: by mail-bw0-f209.google.com with SMTP id 1so4153668bwz.21 for ; Tue, 30 Mar 2010 01:20:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:sender:from:to:cc:subject :date:message-id:x-mailer:in-reply-to:references; bh=rdKhm8Nhhl5dTk9xbbs17ahuC6PDxIEupCHMxNGm1lk=; b=mTPyJT5WcyNHDAQmxJc6dX8BCnpCRwdb6YIRz6NF9uipJB6V7zJnS7IWTASiej6LS1 vimTCferbRrrun3gWNNPjSaGotyzzY3h7Mea1flIMaW8/TqzPVzxOzZBon2TprAArmC3 LSQLcuFLCvkqzIZ+VrbMpzIfAJdt9sEVjK8Qc= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:from:to:cc:subject:date:message-id:x-mailer:in-reply-to :references; b=rpnYTUIP72UyWs02oU/5DVzC/4XBYGy8xfWCiDf/eR4E3pvFo2gmuiT/RFvDEjeLeI cot1Z9UK82CgIa2rloZC67LFUj51JTCpPOeem73rbdV+b5vC32aAlHOKt/qXCLd2VZie P9kIf0gGpVH+bAUAOheNHuNiCygc2IzKDhqOQ= Received: by 10.204.15.134 with SMTP id k6mr5197790bka.96.1269937227688; Tue, 30 Mar 2010 01:20:27 -0700 (PDT) Received: from localhost.localdomain ([188.25.93.130]) by mx.google.com with ESMTPS id 16sm2589620bwz.9.2010.03.30.01.20.26 (version=SSLv3 cipher=RC4-MD5); Tue, 30 Mar 2010 01:20:27 -0700 (PDT) From: Eduard - Gabriel Munteanu To: joro@8bytes.org Cc: aliguori@us.ibm.com, avi@redhat.com, qemu-devel@nongnu.org, kvm@vger.kernel.org, Eduard - Gabriel Munteanu Subject: [RFC PATCH 5/7] x86-64: AMD IOMMU stub Date: Tue, 30 Mar 2010 11:20:06 +0300 Message-Id: <54dea1e5f71be876d7154ce153a09273a634af2f.1269936879.git.eduard.munteanu@linux360.ro> X-Mailer: git-send-email 1.6.4.4 In-Reply-To: References: Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter.kernel.org [140.211.167.41]); Tue, 30 Mar 2010 08:20:44 +0000 (UTC) diff --git a/Makefile.target b/Makefile.target index cbe19a6..dfa4652 100644 --- a/Makefile.target +++ b/Makefile.target @@ -230,6 +230,7 @@ obj-i386-y += device-hotplug.o pci-hotplug.o smbios.o wdt_ib700.o obj-i386-y += extboot.o obj-i386-y += ne2000-isa.o debugcon.o multiboot.o obj-i386-y += testdev.o +obj-i386-y += amd_iommu.o obj-i386-$(CONFIG_KVM_PIT) += i8254-kvm.o obj-i386-$(CONFIG_KVM_DEVICE_ASSIGNMENT) += device-assignment.o diff --git a/hw/amd_iommu.c b/hw/amd_iommu.c new file mode 100644 index 0000000..b502430 --- /dev/null +++ b/hw/amd_iommu.c @@ -0,0 +1,103 @@ +/* + * AMD IOMMU emulation + * + * Copyright (c) 2010 Eduard - Gabriel Munteanu + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +/* + * IVRS (I/O Virtualization Reporting Structure) table. + * + * Describes the AMD IOMMU, as per: + * "AMD I/O Virtualization Technology (IOMMU) Specification", rev 1.26 + */ + +#include + +#include "pc.h" + +struct ivrs_ivhd +{ + uint8_t type; + uint8_t flags; + uint16_t length; + uint16_t devid; + uint16_t capab_off; + uint64_t iommu_base_addr; + uint16_t pci_seg_group; + uint16_t iommu_info; + uint32_t reserved; + uint32_t entry; +} __attribute__ ((__packed__)); + +struct ivrs_table +{ + struct acpi_table_header acpi_hdr; + uint32_t iv_info; + uint32_t reserved[2]; + struct ivrs_ivhd ivhd; +} __attribute__ ((__packed__)); + +static const char ivrs_sig[] = "IVRS"; +static const char dfl_id[] = "QEMUQEMU"; + +static void amd_iommu_init_ivrs(void) +{ + int ivrs_size = sizeof(struct ivrs_table); + struct ivrs_table *ivrs; + struct ivrs_ivhd *ivhd; + struct acpi_table_header *acpi_hdr; + + ivrs = acpi_alloc_table(ivrs_size); + acpi_hdr = &ivrs->acpi_hdr; + ivhd = &ivrs->ivhd; + + ivrs->iv_info = (64 << 15) | /* Virtual address space size. */ + (48 << 8); /* Physical address space size. */ + + ivhd->type = 0x10; + ivhd->flags = 0; + ivhd->length = sizeof(struct ivrs_ivhd); + ivhd->devid = 0; + ivhd->capab_off = 0; + ivhd->iommu_base_addr = 0; + ivhd->pci_seg_group = 0; + ivhd->iommu_info = 0; + ivhd->reserved = 0; + ivhd->entry = 0; + + strncpy(acpi_hdr->signature, ivrs_sig, 4); + acpi_hdr->revision = 1; + strncpy(acpi_hdr->oem_id, dfl_id, 6); + strncpy(acpi_hdr->oem_table_id, dfl_id, 8); + acpi_hdr->oem_revision = 1; + strncpy(acpi_hdr->asl_compiler_id, dfl_id, 4); + acpi_hdr->asl_compiler_revision = 1; + + acpi_commit_table(ivrs); +} + +int amd_iommu_init(void) +{ + amd_iommu_init_ivrs(); + + return 0; +} + diff --git a/hw/pc.c b/hw/pc.c index 0aebae9..89a7a30 100644 --- a/hw/pc.c +++ b/hw/pc.c @@ -906,6 +906,8 @@ static void pc_init1(ram_addr_t ram_size, cpu_register_physical_memory((uint32_t)(-bios_size), bios_size, bios_offset | IO_MEM_ROM); + amd_iommu_init(); + fw_cfg = bochs_bios_init(); rom_set_fw(fw_cfg); diff --git a/hw/pc.h b/hw/pc.h index 92954db..b91300e 100644 --- a/hw/pc.h +++ b/hw/pc.h @@ -194,4 +194,7 @@ int cpu_is_bsp(CPUState *env); int e820_add_entry(uint64_t, uint64_t, uint32_t); +/* amd_iommu.c */ +int amd_iommu_init(void); + #endif