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Fri, 25 Aug 2023 17:53:29 -0500 Received: from xsjfnuv50.xilinx.com (10.180.168.240) by SATLEXMB03.amd.com (10.181.40.144) with Microsoft SMTP Server id 15.1.2507.27 via Frontend Transport; Fri, 25 Aug 2023 17:53:29 -0500 From: Vikram Garhwal To: CC: , , Oleksandr Tyshchenko Subject: [QEMU][PATCH v3 1/2] xen_arm: Create virtio-mmio devices during initialization Date: Fri, 25 Aug 2023 15:53:25 -0700 Message-ID: <20230825225326.9438-2-vikram.garhwal@amd.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230825225326.9438-1-vikram.garhwal@amd.com> References: <20230825225326.9438-1-vikram.garhwal@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SN1PEPF000252A1:EE_|PH0PR12MB8176:EE_ X-MS-Office365-Filtering-Correlation-Id: 59316550-2900-4c60-758c-08dba5be1a98 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17; 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envelope-from=vikram.garhwal@amd.com; helo=NAM11-DM6-obe.outbound.protection.outlook.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Oleksandr Tyshchenko In order to use virtio backends we need to allocate virtio-mmio parameters (irq and base) and register corresponding buses. Use the constants defined in public header arch-arm.h to be aligned with the toolstack. So the number of current supported virtio-mmio devices is 10. For the interrupts triggering use already existing on Arm device-model hypercall. The toolstack should then insert the same amount of device nodes into guest device-tree. Signed-off-by: Oleksandr Tyshchenko Signed-off-by: Vikram Garhwal --- hw/arm/xen_arm.c | 51 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) diff --git a/hw/arm/xen_arm.c b/hw/arm/xen_arm.c index 1d3e6d481a..d1e9f7b488 100644 --- a/hw/arm/xen_arm.c +++ b/hw/arm/xen_arm.c @@ -26,6 +26,7 @@ #include "qapi/qapi-commands-migration.h" #include "qapi/visitor.h" #include "hw/boards.h" +#include "hw/irq.h" #include "hw/sysbus.h" #include "sysemu/block-backend.h" #include "sysemu/tpm_backend.h" @@ -59,6 +60,54 @@ struct XenArmState { } cfg; }; +/* + * VIRTIO_MMIO_DEV_SIZE is imported from tools/libs/light/libxl_arm.c under Xen + * repository. + * + * Origin: git://xenbits.xen.org/xen.git 2128143c114c + */ +#define VIRTIO_MMIO_DEV_SIZE 0x200 + +#define NR_VIRTIO_MMIO_DEVICES \ + (GUEST_VIRTIO_MMIO_SPI_LAST - GUEST_VIRTIO_MMIO_SPI_FIRST) + +#if CONFIG_XEN_CTRL_INTERFACE_VERSION <= 41500 +static int xendevicemodel_set_irq_level( + xendevicemodel_handle *dmod, domid_t domid, uint32_t irq, + unsigned int level) +{ + return 0; +} +#endif + +#if CONFIG_XEN_CTRL_INTERFACE_VERSION <= 41700 +#define GUEST_VIRTIO_MMIO_BASE xen_mk_ullong(0x02000000) +#define GUEST_VIRTIO_MMIO_SIZE xen_mk_ullong(0x00100000) +#define GUEST_VIRTIO_MMIO_SPI_FIRST 33 +#define GUEST_VIRTIO_MMIO_SPI_LAST 43 +#endif + +static void xen_set_irq(void *opaque, int irq, int level) +{ + xendevicemodel_set_irq_level(xen_dmod, xen_domid, irq, level); +} + +static void xen_create_virtio_mmio_devices(XenArmState *xam) +{ + int i; + + for (i = 0; i < NR_VIRTIO_MMIO_DEVICES; i++) { + hwaddr base = GUEST_VIRTIO_MMIO_BASE + i * VIRTIO_MMIO_DEV_SIZE; + qemu_irq irq = qemu_allocate_irq(xen_set_irq, NULL, + GUEST_VIRTIO_MMIO_SPI_FIRST + i); + + sysbus_create_simple("virtio-mmio", base, irq); + + DPRINTF("Created virtio-mmio device %d: irq %d base 0x%lx\n", + i, GUEST_VIRTIO_MMIO_SPI_FIRST + i, base); + } +} + void arch_handle_ioreq(XenIOState *state, ioreq_t *req) { hw_error("Invalid ioreq type 0x%x\n", req->type); @@ -110,6 +159,8 @@ static void xen_arm_init(MachineState *machine) xen_register_ioreq(xam->state, machine->smp.cpus, &xen_memory_listener); + xen_create_virtio_mmio_devices(xam); + #ifdef CONFIG_TPM if (xam->cfg.tpm_base_addr) { xen_enable_tpm(xam); From patchwork Fri Aug 25 22:53:26 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vikram Garhwal X-Patchwork-Id: 13366400 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 973CEC83F04 for ; Fri, 25 Aug 2023 22:59:20 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qZflJ-0000Ol-4t; Fri, 25 Aug 2023 18:58:41 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qZflH-0000Nm-UK for qemu-devel@nongnu.org; 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Fri, 25 Aug 2023 17:53:30 -0500 Received: from SATLEXMB03.amd.com (10.181.40.144) by SATLEXMB05.amd.com (10.181.40.146) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Fri, 25 Aug 2023 17:53:30 -0500 Received: from xsjfnuv50.xilinx.com (10.180.168.240) by SATLEXMB03.amd.com (10.181.40.144) with Microsoft SMTP Server id 15.1.2507.27 via Frontend Transport; Fri, 25 Aug 2023 17:53:29 -0500 From: Vikram Garhwal To: CC: , , Oleksandr Tyshchenko Subject: [QEMU][PATCH v3 2/2] xen_arm: Initialize RAM and add hi/low memory regions Date: Fri, 25 Aug 2023 15:53:26 -0700 Message-ID: <20230825225326.9438-3-vikram.garhwal@amd.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230825225326.9438-1-vikram.garhwal@amd.com> References: <20230825225326.9438-1-vikram.garhwal@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SA2PEPF00001509:EE_|SN7PR12MB7154:EE_ X-MS-Office365-Filtering-Correlation-Id: ee1a2256-fe83-42ec-18e4-08dba5be1a80 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 25 Aug 2023 22:53:30.9247 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: ee1a2256-fe83-42ec-18e4-08dba5be1a80 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d; Ip=[165.204.84.17]; Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: SA2PEPF00001509.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN7PR12MB7154 Received-SPF: softfail client-ip=40.107.92.87; envelope-from=vikram.garhwal@amd.com; helo=NAM10-BN7-obe.outbound.protection.outlook.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Oleksandr Tyshchenko In order to use virtio backends we need to initialize RAM for the xen-mapcache (which is responsible for mapping guest memory using foreign mapping) to work. Calculate and add hi/low memory regions based on machine->ram_size. Use the constants defined in public header arch-arm.h to be aligned with the xen toolstack. While using this machine, the toolstack should then pass real ram_size using "-m" arg. If "-m" is not given, create a QEMU machine without IOREQ and other emulated devices like TPM and VIRTIO. This is done to keep this QEMU machine usable for /etc/init.d/xencommons. Signed-off-by: Oleksandr Tyshchenko Signed-off-by: Vikram Garhwal --- hw/arm/xen_arm.c | 53 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) diff --git a/hw/arm/xen_arm.c b/hw/arm/xen_arm.c index d1e9f7b488..aa8b6171ad 100644 --- a/hw/arm/xen_arm.c +++ b/hw/arm/xen_arm.c @@ -60,6 +60,8 @@ struct XenArmState { } cfg; }; +static MemoryRegion ram_lo, ram_hi; + /* * VIRTIO_MMIO_DEV_SIZE is imported from tools/libs/light/libxl_arm.c under Xen * repository. @@ -80,6 +82,14 @@ static int xendevicemodel_set_irq_level( } #endif +#if defined(__i386__) || defined(__x86_64__) +#define GUEST_RAM_BANKS 2 +#define GUEST_RAM0_BASE 0x40000000ULL /* 3GB of low RAM @ 1GB */ +#define GUEST_RAM0_SIZE 0xc0000000ULL +#define GUEST_RAM1_BASE 0x0200000000ULL /* 1016GB of RAM @ 8GB */ +#define GUEST_RAM1_SIZE 0xfe00000000ULL +#endif + #if CONFIG_XEN_CTRL_INTERFACE_VERSION <= 41700 #define GUEST_VIRTIO_MMIO_BASE xen_mk_ullong(0x02000000) #define GUEST_VIRTIO_MMIO_SIZE xen_mk_ullong(0x00100000) @@ -108,6 +118,39 @@ static void xen_create_virtio_mmio_devices(XenArmState *xam) } } +static void xen_init_ram(MachineState *machine) +{ + MemoryRegion *sysmem = get_system_memory(); + ram_addr_t block_len, ram_size[GUEST_RAM_BANKS]; + + if (machine->ram_size <= GUEST_RAM0_SIZE) { + ram_size[0] = machine->ram_size; + ram_size[1] = 0; + block_len = GUEST_RAM0_BASE + ram_size[0]; + } else { + ram_size[0] = GUEST_RAM0_SIZE; + ram_size[1] = machine->ram_size - GUEST_RAM0_SIZE; + block_len = GUEST_RAM1_BASE + ram_size[1]; + } + + memory_region_init_ram(&ram_memory, NULL, "xen.ram", block_len, + &error_fatal); + + memory_region_init_alias(&ram_lo, NULL, "xen.ram.lo", &ram_memory, + GUEST_RAM0_BASE, ram_size[0]); + memory_region_add_subregion(sysmem, GUEST_RAM0_BASE, &ram_lo); + DPRINTF("Initialized region xen.ram.lo: base 0x%llx size 0x%lx\n", + GUEST_RAM0_BASE, ram_size[0]); + + if (ram_size[1] > 0) { + memory_region_init_alias(&ram_hi, NULL, "xen.ram.hi", &ram_memory, + GUEST_RAM1_BASE, ram_size[1]); + memory_region_add_subregion(sysmem, GUEST_RAM1_BASE, &ram_hi); + DPRINTF("Initialized region xen.ram.hi: base 0x%llx size 0x%lx\n", + GUEST_RAM1_BASE, ram_size[1]); + } +} + void arch_handle_ioreq(XenIOState *state, ioreq_t *req) { hw_error("Invalid ioreq type 0x%x\n", req->type); @@ -157,6 +200,14 @@ static void xen_arm_init(MachineState *machine) xam->state = g_new0(XenIOState, 1); + if (machine->ram_size == 0) { + DPRINTF("ram_size not specified. QEMU machine started without IOREQ" + "(no emulated devices including Virtio)\n"); + return; + } + + xen_init_ram(machine); + xen_register_ioreq(xam->state, machine->smp.cpus, &xen_memory_listener); xen_create_virtio_mmio_devices(xam); @@ -204,6 +255,8 @@ static void xen_arm_machine_class_init(ObjectClass *oc, void *data) mc->init = xen_arm_init; mc->max_cpus = 1; mc->default_machine_opts = "accel=xen"; + /* Set explicitly here to make sure that real ram_size is passed */ + mc->default_ram_size = 0; #ifdef CONFIG_TPM object_class_property_add(oc, "tpm-base-addr", "uint64_t",