GIC-v2 架构分为了两个逻辑块:Distributor 和 CPU Interface,也就是分发器端和 CPU 接口端。 Distributor(仲裁器): 中间那个框框,此逻辑块负责处理各个中断事件的分发问题,也就是中断事件应该发送到哪个 CPU Interface 上去。分发器收集所有的中断源,可以控制每个中断的优先级,它总是将优先级最高的中断事件发送到 ...
只读寄存器GITS_TYPER: PTA 代表 创建collection table时候,用cpuid 还是用 gicr 的地址来路由到对应的redistributor上面。 ITS 配置 (作用是把 device_id,对于pcie设备device_id为设备的BDF)的event_id 转成硬件中断号(INTD)和目标cpu的redistributor ITS转换过程 1) 使用device_id来查询device table 2)使用event...
•handle_fasteoi_irq() •handle_simple_irq() •handle_percpu_irq() •handle_edge_eoi_irq() •handle_bad_irq() c. Chip-level hardwareencapsulation •irq_ack •irq_mask_ack - Optional,recommended for performance •irq_mask •irq_unmask •irq_eoi - Optional, requiredfor EOI...
When booting through bl31 I get the following error emitted from the Linux kernel: GIC CPU mask not found - kernel will fail to boot. When I examine the GICD_ITARGETSR array from bl31 all the values are 0, have I missed initialising something somewhere?
•handle_simple_irq() •handle_percpu_irq() •handle_edge_eoi_irq() •handle_bad_irq() c. Chip-level hardware encapsulation •irq_ack •irq_mask_ack - Optional, recommended for performance •irq_mask •irq_unmask •irq_eoi - Optional, required for EOI flow handlers ...
•handle_simple_irq() •handle_percpu_irq() •handle_edge_eoi_irq() •handle_bad_irq() c. Chip-level hardware encapsulation •irq_ack •irq_mask_ack – Optional, recommendedforperformance •irq_mask •irq_unmask •irq_eoi – Optional, required for EOI flow handlers ...
= XST_SUCCESS) { return XST_FAILURE; } /* Enable all (completion/error/delay) interrupts */ XAxiCdma_IntrEnable(InstancePtr, XAXICDMA_XR_IRQ_ALL_MASK); for (Index = 0; Index Tries; Index++) { Status = CDMATransfer(InstancePtr, BUFFER_BYTESIZE, SubmitTries); if(Status != XST_...
AXI-HP接口_DMA_GIC编程
KVM_DEV_ARM_VGIC_GRP_CPU_SYSREGS, mpidr, KVM_DEV_ARM_VGIC_V3_MPIDR_MASK as u64, )? .chunks[0]; Ok(((reg_val & ICC_CTLR_EL1_PRIBITS_MASK) >> ICC_CTLR_EL1_PRIBITS_SHIFT) + 1) } fn is_ap_reg_available(reg: &SimpleReg, num_priority_bits: u64) -> bool { // As per...