From patchwork Tue Jul 14 07:54:47 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pavel Fedin X-Patchwork-Id: 494923 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 1BCF61402C2 for ; Tue, 14 Jul 2015 18:04:21 +1000 (AEST) Received: from localhost ([::1]:58420 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZEvCM-0008BR-EM for incoming@patchwork.ozlabs.org; Tue, 14 Jul 2015 04:04:18 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:40502) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZEv3K-0000uz-EZ for qemu-devel@nongnu.org; Tue, 14 Jul 2015 03:55:00 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZEv3F-0002H3-Di for qemu-devel@nongnu.org; Tue, 14 Jul 2015 03:54:58 -0400 Received: from mailout2.w1.samsung.com ([210.118.77.12]:63977) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZEv3F-0002GP-8X for qemu-devel@nongnu.org; Tue, 14 Jul 2015 03:54:53 -0400 Received: from eucpsbgm1.samsung.com (unknown [203.254.199.244]) by mailout2.w1.samsung.com (Oracle Communications Messaging Server 7.0.5.31.0 64bit (built May 5 2014)) with ESMTP id <0NRG0074NWNG0P20@mailout2.w1.samsung.com> for qemu-devel@nongnu.org; Tue, 14 Jul 2015 08:54:52 +0100 (BST) X-AuditID: cbfec7f4-f79c56d0000012ee-e4-55a4c04cb2a1 Received: from eusync4.samsung.com ( [203.254.199.214]) by eucpsbgm1.samsung.com (EUCPMTA) with SMTP id 42.21.04846.C40C4A55; Tue, 14 Jul 2015 08:54:52 +0100 (BST) Received: from localhost ([106.109.131.169]) by eusync4.samsung.com (Oracle Communications Messaging Server 7.0.5.31.0 64bit (built May 5 2014)) with ESMTPA id <0NRG009MIWNFEN30@eusync4.samsung.com>; Tue, 14 Jul 2015 08:54:52 +0100 (BST) From: Pavel Fedin To: qemu-devel@nongnu.org Date: Tue, 14 Jul 2015 10:54:47 +0300 Message-id: <0c1f9bfc5a989591cffd59fd6b219cc09ac0b42b.1436859955.git.p.fedin@samsung.com> X-Mailer: git-send-email 1.9.5.msysgit.0 In-reply-to: References: In-reply-to: References: X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrMLMWRmVeSWpSXmKPExsVy+t/xa7o+B5aEGnyZIGXx4vU/Rov5W86w Wsw584DF4njvDhaLts/f2S3uvv7M4sDmsXPWXXaPliNvWT3uXNvD5vHk2mamAJYoLpuU1JzM stQifbsEroyzPQ9ZCn7HVkzs2MfawLjZpYuRk0NCwESi/9lPdghbTOLCvfVsXYxcHEICSxkl PnzbCuV8Y5R4c/wQC0gVm4C6xOmvH8BsEQFJid9dp5lBipgFHjFKXGs7xwySEBawlfg46R9T FyMHB4uAqsSzRlOQMK9AtETvwfNsENs0JBZ9mQNmcwqYS8w8NgHsCiEBM4lbN+8z4xKfwMi/ gJFhFaNoamlyQXFSeq6hXnFibnFpXrpecn7uJkZI0H3Zwbj4mNUhRgEORiUe3hfWS0KFWBPL iitzDzFKcDArifBabAQK8aYkVlalFuXHF5XmpBYfYpTmYFES5527632IkEB6YklqdmpqQWoR TJaJg1OqgXFSYHpna962gIIDx06WvTPb4KKhoBgzddu2yzkri2cuMjws8W3flqBNke8yn56O kLs66UDcvYzaiSaPM/XSLuZf3DB3neXeJumFkq7M0xm6Lbwj63Ta53MulImWm/UkU3njye8u eteyDnrFlc7i/hBYfJFFQeD9n2NGhruETheWH929/6FGt70SS3FGoqEWc1FxIgCNq/PbNgIA AA== X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 210.118.77.12 Cc: Peter Maydell , Shlomo Pongratz , Shlomo Pongratz , Christoffer Dall , Eric Auger Subject: [Qemu-devel] [PATCH v4 5/5] Add gicversion option to virt machine X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Set kernel_irqchip_type according to value of the option and pass it around where necessary. Instantiate devices and fdt nodes according to the choice. mac_cpus for virt machine increased to 64. GICv2 compatibility check happens inside arm_gic_common_realize(). Signed-off-by: Pavel Fedin --- hw/arm/virt.c | 135 ++++++++++++++++++++++++++++++++++++++++++-------- include/hw/arm/fdt.h | 2 +- include/hw/arm/virt.h | 6 ++- 3 files changed, 120 insertions(+), 23 deletions(-) diff --git a/hw/arm/virt.c b/hw/arm/virt.c index 2e7d858..df69dc8 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -48,6 +48,8 @@ #include "hw/arm/sysbus-fdt.h" #include "hw/platform-bus.h" #include "hw/arm/fdt.h" +#include "linux/kvm.h" /* For KVM_DEV_TYPE_ARM_VGIC_V{2|3} */ +#include "qapi/visitor.h" /* Number of external interrupt lines to configure the GIC with */ #define NUM_IRQS 256 @@ -67,6 +69,7 @@ typedef struct VirtBoardInfo { uint32_t clock_phandle; uint32_t gic_phandle; uint32_t v2m_phandle; + const char *class_name; } VirtBoardInfo; typedef struct { @@ -80,6 +83,7 @@ typedef struct { } VirtMachineState; #define TYPE_VIRT_MACHINE "virt" +#define TYPE_VIRTV3_MACHINE "virt-v3" #define VIRT_MACHINE(obj) \ OBJECT_CHECK(VirtMachineState, (obj), TYPE_VIRT_MACHINE) #define VIRT_MACHINE_GET_CLASS(obj) \ @@ -106,7 +110,12 @@ static const MemMapEntry a15memmap[] = { /* GIC distributor and CPU interfaces sit inside the CPU peripheral space */ [VIRT_GIC_DIST] = { 0x08000000, 0x00010000 }, [VIRT_GIC_CPU] = { 0x08010000, 0x00010000 }, - [VIRT_GIC_V2M] = { 0x08020000, 0x00001000 }, + [VIRT_GIC_V2M] = { 0x08020000, 0x00010000 }, + /* On v3 VIRT_GIC_DIST_MBI and VIRT_ITS_CONTROL take place of + * VIRT_GIC_CPU and VIRT_GIC_V2M respectively + */ + [VIRT_ITS_TRANSLATION] = { 0x08030000, 0x00010000 }, + [VIRT_LPI] = { 0x08040000, 0x00800000 }, [VIRT_UART] = { 0x09000000, 0x00001000 }, [VIRT_RTC] = { 0x09010000, 0x00001000 }, [VIRT_FW_CFG] = { 0x09020000, 0x0000000a }, @@ -256,10 +265,13 @@ static void fdt_add_timer_nodes(const VirtBoardInfo *vbi) * they are edge-triggered. */ ARMCPU *armcpu; + uint32_t max; uint32_t irqflags = GIC_FDT_IRQ_FLAGS_EDGE_LO_HI; + /* Argument is 32 bit but 8 bits are reserved for flags */ + max = (vbi->smp_cpus >= 24) ? 24 : vbi->smp_cpus; irqflags = deposit32(irqflags, GIC_FDT_IRQ_PPI_CPU_START, - GIC_FDT_IRQ_PPI_CPU_WIDTH, (1 << vbi->smp_cpus) - 1); + GIC_FDT_IRQ_PPI_CPU_WIDTH, (1 << max) - 1); qemu_fdt_add_subnode(vbi->fdt, "/timer"); @@ -283,6 +295,18 @@ static void fdt_add_cpu_nodes(const VirtBoardInfo *vbi) { int cpu; + /* + * From Documentation/devicetree/bindings/arm/cpus.txt + * On ARM v8 64-bit systems value should be set to 2, + * that corresponds to the MPIDR_EL1 register size. + * If MPIDR_EL1[63:32] value is equal to 0 on all CPUs + * in the system, #address-cells can be set to 1, since + * MPIDR_EL1[63:32] bits are not used for CPUs + * identification. + * + * Now GIC500 doesn't support affinities 2 & 3 so currently + * #address-cells can stay 1 until future GIC + */ qemu_fdt_add_subnode(vbi->fdt, "/cpus"); qemu_fdt_setprop_cell(vbi->fdt, "/cpus", "#address-cells", 0x1); qemu_fdt_setprop_cell(vbi->fdt, "/cpus", "#size-cells", 0x0); @@ -319,25 +343,36 @@ static void fdt_add_v2m_gic_node(VirtBoardInfo *vbi) qemu_fdt_setprop_cell(vbi->fdt, "/intc/v2m", "phandle", vbi->v2m_phandle); } -static void fdt_add_gic_node(VirtBoardInfo *vbi) +static void fdt_add_gic_node(VirtBoardInfo *vbi, int type) { vbi->gic_phandle = qemu_fdt_alloc_phandle(vbi->fdt); qemu_fdt_setprop_cell(vbi->fdt, "/", "interrupt-parent", vbi->gic_phandle); qemu_fdt_add_subnode(vbi->fdt, "/intc"); - /* 'cortex-a15-gic' means 'GIC v2' */ - qemu_fdt_setprop_string(vbi->fdt, "/intc", "compatible", - "arm,cortex-a15-gic"); qemu_fdt_setprop_cell(vbi->fdt, "/intc", "#interrupt-cells", 3); qemu_fdt_setprop(vbi->fdt, "/intc", "interrupt-controller", NULL, 0); - qemu_fdt_setprop_sized_cells(vbi->fdt, "/intc", "reg", - 2, vbi->memmap[VIRT_GIC_DIST].base, - 2, vbi->memmap[VIRT_GIC_DIST].size, - 2, vbi->memmap[VIRT_GIC_CPU].base, - 2, vbi->memmap[VIRT_GIC_CPU].size); qemu_fdt_setprop_cell(vbi->fdt, "/intc", "#address-cells", 0x2); qemu_fdt_setprop_cell(vbi->fdt, "/intc", "#size-cells", 0x2); qemu_fdt_setprop(vbi->fdt, "/intc", "ranges", NULL, 0); + if (type == KVM_DEV_TYPE_ARM_VGIC_V3) { + qemu_fdt_setprop_string(vbi->fdt, "/intc", "compatible", + "arm,gic-v3"); + qemu_fdt_setprop_sized_cells(vbi->fdt, "/intc", "reg", + 2, vbi->memmap[VIRT_GIC_DIST].base, + 2, vbi->memmap[VIRT_GIC_DIST].size, + 2, vbi->memmap[VIRT_LPI].base, + 2, vbi->memmap[VIRT_LPI].size); + } else { + /* 'cortex-a15-gic' means 'GIC v2' */ + qemu_fdt_setprop_string(vbi->fdt, "/intc", "compatible", + "arm,cortex-a15-gic"); + qemu_fdt_setprop_sized_cells(vbi->fdt, "/intc", "reg", + 2, vbi->memmap[VIRT_GIC_DIST].base, + 2, vbi->memmap[VIRT_GIC_DIST].size, + 2, vbi->memmap[VIRT_GIC_CPU].base, + 2, vbi->memmap[VIRT_GIC_CPU].size); + } + qemu_fdt_setprop_cell(vbi->fdt, "/intc", "phandle", vbi->gic_phandle); } @@ -360,20 +395,35 @@ static void create_v2m(VirtBoardInfo *vbi, qemu_irq *pic) fdt_add_v2m_gic_node(vbi); } -static void create_gic(VirtBoardInfo *vbi, qemu_irq *pic) +static void create_gic(VirtBoardInfo *vbi, qemu_irq *pic, int type) { /* We create a standalone GIC v2 */ DeviceState *gicdev; SysBusDevice *gicbusdev; - const char *gictype = "arm_gic"; + const char *gictype; int i; - if (kvm_irqchip_in_kernel()) { - gictype = "kvm-arm-gic"; + if (type == KVM_DEV_TYPE_ARM_VGIC_V3) { + /* TODO: Software emulation is not implemented yet */ + if (!kvm_irqchip_in_kernel()) { + fprintf(stderr, "KVM is currently required for GICv3 emulation\n"); + exit(1); + } + gictype = "kvm-arm-gicv3"; + } else { + gictype = kvm_irqchip_in_kernel() ? "kvm-arm-gic" : "arm_gic"; } gicdev = qdev_create(NULL, gictype); - qdev_prop_set_uint32(gicdev, "revision", 2); + + for (i = 0; i < vbi->smp_cpus; i++) { + CPUState *cpu = qemu_get_cpu(i); + CPUARMState *env = cpu->env_ptr; + env->nvic = gicdev; + } + + qdev_prop_set_uint32(gicdev, "revision", + type == KVM_DEV_TYPE_ARM_VGIC_V3 ? 3 : 2); qdev_prop_set_uint32(gicdev, "num-cpu", smp_cpus); /* Note that the num-irq property counts both internal and external * interrupts; there are always 32 of the former (mandated by GIC spec). @@ -382,7 +432,11 @@ static void create_gic(VirtBoardInfo *vbi, qemu_irq *pic) qdev_init_nofail(gicdev); gicbusdev = SYS_BUS_DEVICE(gicdev); sysbus_mmio_map(gicbusdev, 0, vbi->memmap[VIRT_GIC_DIST].base); - sysbus_mmio_map(gicbusdev, 1, vbi->memmap[VIRT_GIC_CPU].base); + if (type == KVM_DEV_TYPE_ARM_VGIC_V3) { + sysbus_mmio_map(gicbusdev, 1, vbi->memmap[VIRT_LPI].base); + } else { + sysbus_mmio_map(gicbusdev, 1, vbi->memmap[VIRT_GIC_CPU].base); + } /* Wire the outputs from each CPU's generic timer to the * appropriate GIC PPI inputs, and the GIC's IRQ output to @@ -409,9 +463,11 @@ static void create_gic(VirtBoardInfo *vbi, qemu_irq *pic) pic[i] = qdev_get_gpio_in(gicdev, i); } - fdt_add_gic_node(vbi); + fdt_add_gic_node(vbi, type); - create_v2m(vbi, pic); + if (type == KVM_DEV_TYPE_ARM_VGIC_V2) { + create_v2m(vbi, pic); + } } static void create_uart(const VirtBoardInfo *vbi, qemu_irq *pic) @@ -875,7 +931,7 @@ static void machvirt_init(MachineState *machine) create_flash(vbi); - create_gic(vbi, pic); + create_gic(vbi, pic, machine->kernel_irqchip_type); create_uart(vbi, pic); @@ -933,6 +989,37 @@ static void virt_set_secure(Object *obj, bool value, Error **errp) vms->secure = value; } +static void virt_get_gic_version(Object *obj, Visitor *v, void *opaque, + const char *name, Error **errp) +{ + MachineState *ms = MACHINE(obj); + int32_t value = (ms->kernel_irqchip_type == KVM_DEV_TYPE_ARM_VGIC_V3) ? + 3 : 2; + + visit_type_int32(v, &value, name, errp); +} + +static void virt_set_gic_version(Object *obj, Visitor *v, void *opaque, + const char *name, Error **errp) +{ + MachineState *ms = MACHINE(obj); + int32_t value; + + visit_type_int32(v, &value, name, errp); + + switch (value) { + case 3: + ms->kernel_irqchip_type = KVM_DEV_TYPE_ARM_VGIC_V3; + break; + case 2: + ms->kernel_irqchip_type = KVM_DEV_TYPE_ARM_VGIC_V2; + break; + default: + error_report ("Only GICv2 and GICv3 supported currently\n"); + exit(1); + } +} + static void virt_instance_init(Object *obj) { VirtMachineState *vms = VIRT_MACHINE(obj); @@ -948,6 +1035,11 @@ static void virt_instance_init(Object *obj) /* Default GIC type is v2 */ vms->parent.kernel_irqchip_type = KVM_DEV_TYPE_ARM_VGIC_V2; + object_property_add(obj, "gicversion", "int", virt_get_gic_version, + virt_set_gic_version, NULL, NULL, NULL); + object_property_set_description(obj, "gicversion", + "Set GIC version. " + "Valid values are 2 and 3", NULL); } static void virt_class_init(ObjectClass *oc, void *data) @@ -957,7 +1049,8 @@ static void virt_class_init(ObjectClass *oc, void *data) mc->name = TYPE_VIRT_MACHINE; mc->desc = "ARM Virtual Machine", mc->init = machvirt_init; - mc->max_cpus = 8; + /* With gic3 full implementation (with bitops) rase the lmit to 128 */ + mc->max_cpus = 64; mc->has_dynamic_sysbus = true; mc->block_default_type = IF_VIRTIO; mc->no_cdrom = 1; diff --git a/include/hw/arm/fdt.h b/include/hw/arm/fdt.h index c3d5015..dd794dd 100644 --- a/include/hw/arm/fdt.h +++ b/include/hw/arm/fdt.h @@ -29,6 +29,6 @@ #define GIC_FDT_IRQ_FLAGS_LEVEL_LO 8 #define GIC_FDT_IRQ_PPI_CPU_START 8 -#define GIC_FDT_IRQ_PPI_CPU_WIDTH 8 +#define GIC_FDT_IRQ_PPI_CPU_WIDTH 24 #endif diff --git a/include/hw/arm/virt.h b/include/hw/arm/virt.h index d22fd8e..852efb9 100644 --- a/include/hw/arm/virt.h +++ b/include/hw/arm/virt.h @@ -46,6 +46,11 @@ enum { VIRT_CPUPERIPHS, VIRT_GIC_DIST, VIRT_GIC_CPU, + VIRT_GIC_V2M, + VIRT_GIC_DIST_MBI = VIRT_GIC_CPU, + VIRT_ITS_CONTROL = VIRT_GIC_V2M, + VIRT_ITS_TRANSLATION, + VIRT_LPI, VIRT_UART, VIRT_MMIO, VIRT_RTC, @@ -54,7 +59,6 @@ enum { VIRT_PCIE_MMIO, VIRT_PCIE_PIO, VIRT_PCIE_ECAM, - VIRT_GIC_V2M, VIRT_PLATFORM_BUS, };