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hw/riscv: virt: Create a platform bus

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Create a platform bus to allow dynamic devices to be connected. This is
based on the ARM implementation.

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@amd.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Message-Id: <20220427234146.1130752-4-alistair.francis@opensource.wdc.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Alistair Francis 2022-04-28 09:41:43 +10:00
parent d24a7bc24e
commit 1832b7cb3f
3 changed files with 56 additions and 20 deletions
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7
include/hw/riscv/virt.h
View file

@ -46,6 +46,7 @@ struct RISCVVirtState {
/*< public >*/
Notifier machine_done;
DeviceState *platform_bus_dev;
RISCVHartArrayState soc[VIRT_SOCKETS_MAX];
DeviceState *irqchip[VIRT_SOCKETS_MAX];
PFlashCFI01 *flash[2];
@ -76,6 +77,7 @@ enum {
VIRT_DRAM,
VIRT_PCIE_MMIO,
VIRT_PCIE_PIO,
VIRT_PLATFORM_BUS,
VIRT_PCIE_ECAM
};
@ -85,9 +87,12 @@ enum {
VIRTIO_IRQ = 1, /* 1 to 8 */
VIRTIO_COUNT = 8,
PCIE_IRQ = 0x20, /* 32 to 35 */
VIRTIO_NDEV = 0x35 /* Arbitrary maximum number of interrupts */
VIRT_PLATFORM_BUS_IRQ = 64, /* 64 to 96 */
VIRTIO_NDEV = 96 /* Arbitrary maximum number of interrupts */
};
#define VIRT_PLATFORM_BUS_NUM_IRQS 32
#define VIRT_IRQCHIP_IPI_MSI 1
#define VIRT_IRQCHIP_NUM_MSIS 255
#define VIRT_IRQCHIP_NUM_SOURCES VIRTIO_NDEV