网络中断异常服务例程 网络释义 1. 中断异常服务例程 0x00000018)处运行,该地址的指令是跳转到“中断异常服务例程”(HandleIRQ)处运行。以上就是我对异常向量表的一个简 … yuanjiaxing-baby.blog.163.com|基于6个网页
ack = irq = (vector-0x800) >>4;#ifdefCONFIG_ALPHA_JENSENswitch(vector) {case0x660: handle_nmi(regs);return;/* local device interrupts: */case0x900:handle_irq(4, regs);return;/* com1 -> irq 4 */case0x920:handle_irq(3, regs);return;/* com2 -> irq 3 */case0x980:handle_irq...
handle_level_irq() { mask( irq ); ack( irq ); status |=IRQ_INPROGRESS; handle_IRQ_event(); status &=~IRQ_INPROGRESS; unmask( irq ); } 由于irq在整个处理过程中都被屏蔽,所以需要handle_level_irq里的action要尽量简短 handle_edge_irq * Interrupt occures on the falling and/or rising edge...
voidhandle_edge_eoi_irq(unsignedintirq, struct irq_desc *desc){structirq_chip*chip=irq_desc_get_chip(desc);raw_spin_lock(&desc->lock); desc->istate &= ~(IRQS_REPLAY | IRQS_WAITING);if(unlikely(irqd_irq_disabled(&desc->irq_data) || irqd_irq_inprogress(&desc->irq_data) || !d...
handle_level_irq() { mask( irq ); ack( irq ); status |=IRQ_INPROGRESS; handle_IRQ_event(); status &=~IRQ_INPROGRESS; unmask( irq ); } 由于irq在整个处理过程中都被屏蔽,所以需要handle_level_irq里的action要尽量简短 handle_edge_irq ...
handle_IRQ_event(); status &=~IRQ_INPROGRESS; unmask( irq ); } 由于irq在整个处理过程中都被屏蔽,所以需要handle_level_irq里的action要尽量简短 handle_edge_irq * Interrupt occures on the falling and/or rising edge of a hardware * signal. The occurence is latched into the irq controller hard...
首先来看handle_level_irq: [plain]view plaincopy /** * handle_level_irq - Level type irq handler * @irq: the interrupt number * @desc: the interrupt description structure for this irq * * Level type interrupts are active as long as the hardware line has ...
_irq.part.15+0x1e/0x1d0 [ 122.041864] which lock already depends on the new lock. [ 122.041865] the existing dependency chain (in reverse order) is: [ 122.041866] -> #1 (&port_lock_key){-.-.}-{2:2}: [ 122.041868] lock_acquire+0x1b1/0x8a0 [ 122.041868] _raw_spin_lock_irq...
一般地说，句柄是一个固定的结构序号，你这里handle应该是一个指向结构的指针，这个结构中的乘以eventId是对应IRQ序号。你可以查一下handle的定义。
IRQ(大概是最熟悉的异常方式了)在外部中断源在需要向处理器请求服务时发生,比如:时钟、外围器件FIFO上/下溢出、按键等等。IRQHandler就是中断的处理句柄,具体如下。 --- NESTED_ENTRY IRQHandler sub lr, lr, #4 ; fix return address stmfd sp!, {r0-r3, r12, lr} ;保存将要用到的寄存器...