include/hw/arm/virt.h

   1 /*
   2  *
   3  * Copyright (c) 2015 Linaro Limited
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms and conditions of the GNU General Public License,
   7  * version 2 or later, as published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along with
  15  * this program.  If not, see <http://www.gnu.org/licenses/>.
  16  *
  17  * Emulate a virtual board which works by passing Linux all the information
  18  * it needs about what devices are present via the device tree.
  19  * There are some restrictions about what we can do here:
  20  *  + we can only present devices whose Linux drivers will work based
  21  *    purely on the device tree with no platform data at all
  22  *  + we want to present a very stripped-down minimalist platform,
  23  *    both because this reduces the security attack surface from the guest
  24  *    and also because it reduces our exposure to being broken when
  25  *    the kernel updates its device tree bindings and requires further
  26  *    information in a device binding that we aren't providing.
  27  * This is essentially the same approach kvmtool uses.
  28  */
  29
  30 #ifndef QEMU_ARM_VIRT_H
  31 #define QEMU_ARM_VIRT_H
  32
  33 #include "exec/hwaddr.h"
  34 #include "qemu/notify.h"
  35 #include "hw/boards.h"
  36 #include "hw/arm/boot.h"
  37 #include "hw/block/flash.h"
  38 #include "sysemu/kvm.h"
  39 #include "hw/intc/arm_gicv3_common.h"
  40 #include "qom/object.h"
  41
  42 #define NUM_GICV2M_SPIS       64
  43 #define NUM_VIRTIO_TRANSPORTS 32
  44 #define NUM_SMMU_IRQS          4
  45
  46 #define ARCH_GIC_MAINT_IRQ  9
  47
  48 #define ARCH_TIMER_VIRT_IRQ   11
  49 #define ARCH_TIMER_S_EL1_IRQ  13
  50 #define ARCH_TIMER_NS_EL1_IRQ 14
  51 #define ARCH_TIMER_NS_EL2_IRQ 10
  52
  53 #define VIRTUAL_PMU_IRQ 7
  54
  55 #define PPI(irq) ((irq) + 16)
  56
  57 /* See Linux kernel arch/arm64/include/asm/pvclock-abi.h */
  58 #define PVTIME_SIZE_PER_CPU 64
  59
  60 enum {
  61     VIRT_FLASH,
  62     VIRT_MEM,
  63     VIRT_CPUPERIPHS,
  64     VIRT_GIC_DIST,
  65     VIRT_GIC_CPU,
  66     VIRT_GIC_V2M,
  67     VIRT_GIC_HYP,
  68     VIRT_GIC_VCPU,
  69     VIRT_GIC_ITS,
  70     VIRT_GIC_REDIST,
  71     VIRT_SMMU,
  72     VIRT_UART,
  73     VIRT_MMIO,
  74     VIRT_RTC,
  75     VIRT_FW_CFG,
  76     VIRT_PCIE,
  77     VIRT_PCIE_MMIO,
  78     VIRT_PCIE_PIO,
  79     VIRT_PCIE_ECAM,
  80     VIRT_PLATFORM_BUS,
  81     VIRT_GPIO,
  82     VIRT_SECURE_UART,
  83     VIRT_SECURE_MEM,
  84     VIRT_PCDIMM_ACPI,
  85     VIRT_ACPI_GED,
  86     VIRT_NVDIMM_ACPI,
  87     VIRT_PVTIME,
  88     VIRT_LOWMEMMAP_LAST,
  89 };
  90
  91 /* indices of IO regions located after the RAM */
  92 enum {
  93     VIRT_HIGH_GIC_REDIST2 =  VIRT_LOWMEMMAP_LAST,
  94     VIRT_HIGH_PCIE_ECAM,
  95     VIRT_HIGH_PCIE_MMIO,
  96 };
  97
  98 typedef enum VirtIOMMUType {
  99     VIRT_IOMMU_NONE,
 100     VIRT_IOMMU_SMMUV3,
 101     VIRT_IOMMU_VIRTIO,
 102 } VirtIOMMUType;
 103
 104 typedef enum VirtMSIControllerType {
 105     VIRT_MSI_CTRL_NONE,
 106     VIRT_MSI_CTRL_GICV2M,
 107     VIRT_MSI_CTRL_ITS,
 108 } VirtMSIControllerType;
 109
 110 typedef enum VirtGICType {
 111     VIRT_GIC_VERSION_MAX,
 112     VIRT_GIC_VERSION_HOST,
 113     VIRT_GIC_VERSION_2,
 114     VIRT_GIC_VERSION_3,
 115     VIRT_GIC_VERSION_NOSEL,
 116 } VirtGICType;
 117
 118 struct VirtMachineClass {
 119     MachineClass parent;
 120     bool disallow_affinity_adjustment;
 121     bool no_its;
 122     bool no_pmu;
 123     bool claim_edge_triggered_timers;
 124     bool smbios_old_sys_ver;
 125     bool no_highmem_ecam;
 126     bool no_ged;   /* Machines < 4.2 has no support for ACPI GED device */
 127     bool kvm_no_adjvtime;
 128     bool no_kvm_steal_time;
 129     bool acpi_expose_flash;
 130 };
 131
 132 struct VirtMachineState {
 133     MachineState parent;
 134     Notifier machine_done;
 135     DeviceState *platform_bus_dev;
 136     FWCfgState *fw_cfg;
 137     PFlashCFI01 *flash[2];
 138     bool secure;
 139     bool highmem;
 140     bool highmem_ecam;
 141     bool its;
 142     bool virt;
 143     bool ras;
 144     bool mte;
 145     OnOffAuto acpi;
 146     VirtGICType gic_version;
 147     VirtIOMMUType iommu;
 148     VirtMSIControllerType msi_controller;
 149     uint16_t virtio_iommu_bdf;
 150     struct arm_boot_info bootinfo;
 151     MemMapEntry *memmap;
 152     char *pciehb_nodename;
 153     const int *irqmap;
 154     int smp_cpus;
 155     void *fdt;
 156     int fdt_size;
 157     uint32_t clock_phandle;
 158     uint32_t gic_phandle;
 159     uint32_t msi_phandle;
 160     uint32_t iommu_phandle;
 161     int psci_conduit;
 162     hwaddr highest_gpa;
 163     DeviceState *gic;
 164     DeviceState *acpi_dev;
 165     Notifier powerdown_notifier;
 166     PCIBus *bus;
 167 };
 168
 169 #define VIRT_ECAM_ID(high) (high ? VIRT_HIGH_PCIE_ECAM : VIRT_PCIE_ECAM)
 170
 171 #define TYPE_VIRT_MACHINE   MACHINE_TYPE_NAME("virt")
 172 OBJECT_DECLARE_TYPE(VirtMachineState, VirtMachineClass, VIRT_MACHINE)
 173
 174 void virt_acpi_setup(VirtMachineState *vms);
 175 bool virt_is_acpi_enabled(VirtMachineState *vms);
 176
 177 /* Return the number of used redistributor regions  */
 178 static inline int virt_gicv3_redist_region_count(VirtMachineState *vms)
 179 {
 180     uint32_t redist0_capacity =
 181                 vms->memmap[VIRT_GIC_REDIST].size / GICV3_REDIST_SIZE;
 182
 183     assert(vms->gic_version == VIRT_GIC_VERSION_3);
 184
 185     return vms->smp_cpus > redist0_capacity ? 2 : 1;
 186 }
 187
 188 #endif /* QEMU_ARM_VIRT_H */