1 #ifndef ARM_COMMON__KVM_ARCH_H 2 #define ARM_COMMON__KVM_ARCH_H 3 4 #include <stdbool.h> 5 #ifndef _GNU_SOURCE 6 #define _GNU_SOURCE 7 #endif 8 #include <sched.h> 9 10 #include <linux/const.h> 11 #include <linux/types.h> 12 13 #include "arm-common/gic.h" 14 15 /* 16 * The memory map used for ARM guests (not to scale): 17 * 18 * 0 64K 16M 32M 48M 1GB 2GB 19 * +-------+----+-------+-------+--------+-----+---------+---...... 20 * | PCI |////| plat | | | | | 21 * | I/O |////| MMIO: | Flash | virtio | GIC | PCI | DRAM 22 * | space |////| UART, | | MMIO | | (AXI) | 23 * | |////| RTC, | | | | | 24 * | |////| PVTIME| | | | | 25 * +-------+----+-------+-------+--------+-----+---------+---...... 26 */ 27 28 #define ARM_IOPORT_AREA _AC(0x0000000000000000, UL) 29 #define ARM_MMIO_AREA _AC(0x0000000001000000, UL) 30 #define ARM_AXI_AREA _AC(0x0000000040000000, UL) 31 #define ARM_MEMORY_AREA _AC(0x0000000080000000, UL) 32 33 #define KVM_IOPORT_AREA ARM_IOPORT_AREA 34 #define ARM_IOPORT_SIZE (1U << 16) 35 36 37 #define ARM_UART_MMIO_BASE ARM_MMIO_AREA 38 #define ARM_UART_MMIO_SIZE 0x10000 39 40 #define ARM_RTC_MMIO_BASE (ARM_UART_MMIO_BASE + ARM_UART_MMIO_SIZE) 41 #define ARM_RTC_MMIO_SIZE 0x10000 42 43 #define ARM_PVTIME_BASE (ARM_RTC_MMIO_BASE + ARM_RTC_MMIO_SIZE) 44 #define ARM_PVTIME_SIZE SZ_64K 45 46 #define KVM_FLASH_MMIO_BASE (ARM_MMIO_AREA + 0x1000000) 47 #define KVM_FLASH_MAX_SIZE 0x1000000 48 49 #define KVM_VIRTIO_MMIO_AREA (KVM_FLASH_MMIO_BASE + KVM_FLASH_MAX_SIZE) 50 #define ARM_VIRTIO_MMIO_SIZE (ARM_AXI_AREA - \ 51 (KVM_VIRTIO_MMIO_AREA + ARM_GIC_SIZE)) 52 53 #define ARM_GIC_DIST_BASE (ARM_AXI_AREA - ARM_GIC_DIST_SIZE) 54 #define ARM_GIC_CPUI_BASE (ARM_GIC_DIST_BASE - ARM_GIC_CPUI_SIZE) 55 #define ARM_GIC_SIZE (ARM_GIC_DIST_SIZE + ARM_GIC_CPUI_SIZE) 56 #define ARM_GIC_DIST_SIZE 0x10000 57 #define ARM_GIC_CPUI_SIZE 0x20000 58 59 60 #define KVM_PCI_CFG_AREA ARM_AXI_AREA 61 #define ARM_PCI_CFG_SIZE (1ULL << 28) 62 #define KVM_PCI_MMIO_AREA (KVM_PCI_CFG_AREA + ARM_PCI_CFG_SIZE) 63 #define ARM_PCI_MMIO_SIZE (ARM_MEMORY_AREA - \ 64 (ARM_AXI_AREA + ARM_PCI_CFG_SIZE)) 65 66 67 #define ARM_LOMAP_MAX_MEMORY ((1ULL << 32) - ARM_MEMORY_AREA) 68 69 70 #define KVM_IOEVENTFD_HAS_PIO 0 71 72 /* 73 * On a GICv3 there must be one redistributor per vCPU. 74 * The value here is the size for one, we multiply this at runtime with 75 * the number of requested vCPUs to get the actual size. 76 */ 77 #define ARM_GIC_REDIST_SIZE 0x20000 78 79 #define KVM_IRQ_OFFSET GIC_SPI_IRQ_BASE 80 81 #define KVM_VM_TYPE 0 82 83 #define VIRTIO_DEFAULT_TRANS(kvm) \ 84 ((kvm)->cfg.arch.virtio_trans_pci ? \ 85 ((kvm)->cfg.virtio_legacy ? VIRTIO_PCI_LEGACY : VIRTIO_PCI) : \ 86 VIRTIO_MMIO) 87 88 #define VIRTIO_RING_ENDIAN (VIRTIO_ENDIAN_LE | VIRTIO_ENDIAN_BE) 89 90 #define ARCH_HAS_PCI_EXP 1 91 92 static inline bool arm_addr_in_ioport_region(u64 phys_addr) 93 { 94 u64 limit = KVM_IOPORT_AREA + ARM_IOPORT_SIZE; 95 return phys_addr >= KVM_IOPORT_AREA && phys_addr < limit; 96 } 97 98 struct kvm_arch { 99 /* 100 * We may have to align the guest memory for virtio, so keep the 101 * original pointers here for munmap. 102 */ 103 void *ram_alloc_start; 104 u64 ram_alloc_size; 105 106 /* 107 * Guest addresses for memory layout. 108 */ 109 u64 memory_guest_start; 110 u64 kern_guest_start; 111 u64 initrd_guest_start; 112 u64 initrd_size; 113 u64 dtb_guest_start; 114 115 cpu_set_t *vcpu_affinity_cpuset; 116 }; 117 118 #endif /* ARM_COMMON__KVM_ARCH_H */ 119