diff options
Diffstat (limited to 'hw/loongarch')
| -rw-r--r-- | hw/loongarch/virt.c | 60 |
1 files changed, 41 insertions, 19 deletions
diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c index 2d7f718570..2b5ae45939 100644 --- a/hw/loongarch/virt.c +++ b/hw/loongarch/virt.c @@ -718,25 +718,47 @@ static void virt_irq_init(LoongArchVirtMachineState *lvms) uint32_t cpuintc_phandle, eiointc_phandle, pch_pic_phandle, pch_msi_phandle; /* - * The connection of interrupts: - * +-----+ +---------+ +-------+ - * | IPI |--> | CPUINTC | <-- | Timer | - * +-----+ +---------+ +-------+ - * ^ - * | - * +---------+ - * | EIOINTC | - * +---------+ - * ^ ^ - * | | - * +---------+ +---------+ - * | PCH-PIC | | PCH-MSI | - * +---------+ +---------+ - * ^ ^ ^ - * | | | - * +--------+ +---------+ +---------+ - * | UARTs | | Devices | | Devices | - * +--------+ +---------+ +---------+ + * Extended IRQ model. + * | + * +-----------+ +-------------|--------+ +-----------+ + * | IPI/Timer | --> | CPUINTC(0-3)|(4-255) | <-- | IPI/Timer | + * +-----------+ +-------------|--------+ +-----------+ + * ^ | + * | + * +---------+ + * | EIOINTC | + * +---------+ + * ^ ^ + * | | + * +---------+ +---------+ + * | PCH-PIC | | PCH-MSI | + * +---------+ +---------+ + * ^ ^ ^ + * | | | + * +--------+ +---------+ +---------+ + * | UARTs | | Devices | | Devices | + * +--------+ +---------+ +---------+ + * + * Virt extended IRQ model. + * + * +-----+ +---------------+ +-------+ + * | IPI |--> | CPUINTC(0-255)| <-- | Timer | + * +-----+ +---------------+ +-------+ + * ^ + * | + * +-----------+ + * | V-EIOINTC | + * +-----------+ + * ^ ^ + * | | + * +---------+ +---------+ + * | PCH-PIC | | PCH-MSI | + * +---------+ +---------+ + * ^ ^ ^ + * | | | + * +--------+ +---------+ +---------+ + * | UARTs | | Devices | | Devices | + * +--------+ +---------+ +---------+ */ /* Create IPI device */ |