diff options
| author | Anup Patel <anup.patel@wdc.com> | 2022-02-20 14:25:24 +0530 |
|---|---|---|
| committer | Alistair Francis <alistair.francis@wdc.com> | 2022-03-03 13:14:50 +1000 |
| commit | 28d8c281200f20a060c456c81fd1564f3d119fda (patch) | |
| tree | 6954747ca91b9eef20a0ff3df6afaa7bad27fc49 /include | |
| parent | 9746e583fe6ca67d9645448989535bc19adb6150 (diff) | |
hw/riscv: virt: Add optional AIA IMSIC support to virt machine
We extend virt machine to emulate both AIA IMSIC and AIA APLIC
devices only when "aia=aplic-imsic" parameter is passed along
with machine name in the QEMU command-line. The AIA IMSIC is
only a per-HART MSI controller so we use AIA APLIC in MSI-mode
to forward all wired interrupts as MSIs to the AIA IMSIC.
We also provide "aia-guests=<xyz>" parameter which can be used
to specify number of VS-level AIA IMSIC Guests MMIO pages for
each HART.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Signed-off-by: Anup Patel <anup@brainfault.org>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20220220085526.808674-4-anup@brainfault.org>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/hw/riscv/virt.h | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/include/hw/riscv/virt.h b/include/hw/riscv/virt.h index 47706b456d..d248d0dfa0 100644 --- a/include/hw/riscv/virt.h +++ b/include/hw/riscv/virt.h @@ -24,8 +24,10 @@ #include "hw/block/flash.h" #include "qom/object.h" -#define VIRT_CPUS_MAX 32 -#define VIRT_SOCKETS_MAX 8 +#define VIRT_CPUS_MAX_BITS 3 +#define VIRT_CPUS_MAX (1 << VIRT_CPUS_MAX_BITS) +#define VIRT_SOCKETS_MAX_BITS 2 +#define VIRT_SOCKETS_MAX (1 << VIRT_SOCKETS_MAX_BITS) #define TYPE_RISCV_VIRT_MACHINE MACHINE_TYPE_NAME("virt") typedef struct RISCVVirtState RISCVVirtState; @@ -35,6 +37,7 @@ DECLARE_INSTANCE_CHECKER(RISCVVirtState, RISCV_VIRT_MACHINE, typedef enum RISCVVirtAIAType { VIRT_AIA_TYPE_NONE = 0, VIRT_AIA_TYPE_APLIC, + VIRT_AIA_TYPE_APLIC_IMSIC, } RISCVVirtAIAType; struct RISCVVirtState { @@ -50,6 +53,7 @@ struct RISCVVirtState { int fdt_size; bool have_aclint; RISCVVirtAIAType aia_type; + int aia_guests; }; enum { @@ -65,6 +69,8 @@ enum { VIRT_UART0, VIRT_VIRTIO, VIRT_FW_CFG, + VIRT_IMSIC_M, + VIRT_IMSIC_S, VIRT_FLASH, VIRT_DRAM, VIRT_PCIE_MMIO, @@ -81,8 +87,12 @@ enum { VIRTIO_NDEV = 0x35 /* Arbitrary maximum number of interrupts */ }; -#define VIRT_IRQCHIP_NUM_SOURCES 127 +#define VIRT_IRQCHIP_IPI_MSI 1 +#define VIRT_IRQCHIP_NUM_MSIS 255 +#define VIRT_IRQCHIP_NUM_SOURCES VIRTIO_NDEV #define VIRT_IRQCHIP_NUM_PRIO_BITS 3 +#define VIRT_IRQCHIP_MAX_GUESTS_BITS 3 +#define VIRT_IRQCHIP_MAX_GUESTS ((1U << VIRT_IRQCHIP_MAX_GUESTS_BITS) - 1U) #define VIRT_PLIC_PRIORITY_BASE 0x04 #define VIRT_PLIC_PENDING_BASE 0x1000 @@ -97,6 +107,7 @@ enum { #define FDT_PCI_INT_CELLS 1 #define FDT_PLIC_INT_CELLS 1 #define FDT_APLIC_INT_CELLS 2 +#define FDT_IMSIC_INT_CELLS 0 #define FDT_MAX_INT_CELLS 2 #define FDT_MAX_INT_MAP_WIDTH (FDT_PCI_ADDR_CELLS + FDT_PCI_INT_CELLS + \ 1 + FDT_MAX_INT_CELLS) |