diff options
| author | Sunil V L <sunilvl@ventanamicro.com> | 2023-12-18 20:32:38 +0530 |
|---|---|---|
| committer | Alistair Francis <alistair.francis@wdc.com> | 2024-01-10 18:47:46 +1000 |
| commit | 68c8b403c78b8f20acbebba3cdc46320853fe5ca (patch) | |
| tree | 830629317ee0dd7f0f3aef6238f3eeb8cb77130d /include/hw/riscv | |
| parent | 8199bf48ea1fdb8e491311a0dc28cea30af18c95 (diff) | |
| download | qemu-68c8b403c78b8f20acbebba3cdc46320853fe5ca.zip qemu-68c8b403c78b8f20acbebba3cdc46320853fe5ca.tar.gz qemu-68c8b403c78b8f20acbebba3cdc46320853fe5ca.tar.bz2 | |
hw/riscv: virt: Make few IMSIC macros and functions public
Some macros and static function related to IMSIC are defined in virt.c.
They are required in virt-acpi-build.c. So, make them public.
Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Message-ID: <20231218150247.466427-5-sunilvl@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Diffstat (limited to 'include/hw/riscv')
| -rw-r--r-- | include/hw/riscv/virt.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/include/hw/riscv/virt.h b/include/hw/riscv/virt.h index e5c474b..5b03575 100644 --- a/include/hw/riscv/virt.h +++ b/include/hw/riscv/virt.h @@ -23,6 +23,7 @@ #include "hw/riscv/riscv_hart.h" #include "hw/sysbus.h" #include "hw/block/flash.h" +#include "hw/intc/riscv_imsic.h" #define VIRT_CPUS_MAX_BITS 9 #define VIRT_CPUS_MAX (1 << VIRT_CPUS_MAX_BITS) @@ -127,4 +128,28 @@ enum { bool virt_is_acpi_enabled(RISCVVirtState *s); void virt_acpi_setup(RISCVVirtState *vms); +uint32_t imsic_num_bits(uint32_t count); + +/* + * The virt machine physical address space used by some of the devices + * namely ACLINT, PLIC, APLIC, and IMSIC depend on number of Sockets, + * number of CPUs, and number of IMSIC guest files. + * + * Various limits defined by VIRT_SOCKETS_MAX_BITS, VIRT_CPUS_MAX_BITS, + * and VIRT_IRQCHIP_MAX_GUESTS_BITS are tuned for maximum utilization + * of virt machine physical address space. + */ + +#define VIRT_IMSIC_GROUP_MAX_SIZE (1U << IMSIC_MMIO_GROUP_MIN_SHIFT) +#if VIRT_IMSIC_GROUP_MAX_SIZE < \ + IMSIC_GROUP_SIZE(VIRT_CPUS_MAX_BITS, VIRT_IRQCHIP_MAX_GUESTS_BITS) +#error "Can't accomodate single IMSIC group in address space" +#endif + +#define VIRT_IMSIC_MAX_SIZE (VIRT_SOCKETS_MAX * \ + VIRT_IMSIC_GROUP_MAX_SIZE) +#if 0x4000000 < VIRT_IMSIC_MAX_SIZE +#error "Can't accomodate all IMSIC groups in address space" +#endif + #endif |