0b01,表示向所有 CPU Interface发送一个 SGI 中断 0b10,表示向自己发送一个 SGI 0b11,reserved CPUTargetList,一个 CPU 位图,某一位为 1 表示要向该 CPU Interface 发送一个 SGI(TargetListFilter=0b00 的情况下) static void gicv2_send_sgi(uint32_t sgi, enum sgi_mode mode, cpumask_t *mask) ...
IPI中断,即处理器核间中断(Inter-Processor Interrupt),其实就是ARM GIC架构里定义的SGI中断(Software Generated Interrupt)。在GICv3架构中,共有16个SGI中断(不包括extension的),中断号是从0到15。ARM推荐的软件规定,0-7 SGI给REE(Rich Execution Environment)使用,8-15 SGI给TEE (Trusted Execution Environment)使...
0b01,表示向所有 CPU Interface发送一个 SGI 中断 0b10,表示向自己发送一个 SGI 0b11,reserved CPUTargetList,一个 CPU 位图,某一位为 1 表示要向该 CPU Interface 发送一个 SGI(TargetListFilter=0b00 的情况下) AI检测代码解析 static void gicv2_send_sgi(uint32_t sgi, enum sgi_mode mode, cpum...
外设类型的中断一般通过一个interrupt request line的硬件信号线连接到中断控制器,可能是电平触发的(Level-sensitive),也可能是边缘触发的(Edge-triggered)。 (2)软件触发的中断(SGI,Software-generated interrupt)。软件可以通过写GICD_SGIR寄存器来触发一个中断事件,这样的中断,可以用于processor之间的通信。 (3)虚拟中...
运行 AI代码解释 *ARMGeneric Interrupt Controller,version3AArch64SMPcores are often associatedwitha GICv3,providing Private PeripheralInterrupts(PPI),Shared PeripheralInterrupts(SPI),Software GeneratedInterrupts(SGI),and Locality-specific PeripheralInterrupts(LPI).Main node required properties:-compatible:should...
sgi_aff_add_table(icc_sgi1r_value, i); }return (RT_CPUS_NR + 31) >> 5; }rt_inline void gicv3_sgi_send(rt_uint64_t int_id) { rt_uint64_t i; for (i = 0; i < sgi_aff_table_num; i++) { if (sgi_aff_table[i].target_list) ...
Add up_affinity_irq/up_trigger_irq/up_prioritize_irq; Add arm64_gic_irq_trigger to set irq type; Send sgi with correct aff and target list; Move sgi attach and enable to gic init. Impact ARM64 GICv3 Testing fvp-v8r:nsh_smp and qemu-armv8a:nsh_smp...
GiccSetSgi1r(val); } cpu++; } } VOID HalIrqSendIpi(UINT32 target, UINT32 ipi) { GicSgi(ipi, target); } VOID HalIrqSetAffinity(UINT32 irq, UINT32 cpuMask) { UINT64 affinity = MpidrToAffinity(NextCpu(0, cpuMask)); /* When ARE is on, use router */ ...
需要金币:*** 金币(10金币=人民币1元) 分析arm架构参考gicv3和gicv4软件概述.pdf 关闭预览 想预览更多内容,点击免费在线预览全文 免费在线预览全文 GICv3 and GICv4 Software Overview Non- DAI 0492B Copyright 2015-2016 ARM Limited. . 1 Non- GICv3 and GICv4 Software Overview Copyright © 200...
+agintc_send_ipi(int sgi, int targetmask) +{ + int val = (sgi << 24) | (targetmask); + + __asm volatile ("msr "STR(ICC_SGI1R)", %x0" ::"r" (val)); +} Index: arch/arm64/conf/GENERIC === RCS file: /cvs/src/sys/arch/arm64/conf/GENERIC,v retrieving revision 1.23 ...