有关SRIO的Doorbell中断响应函数映射

guang ming wang

Prodigy 210 points

您好！我在看论坛下载的K2_STK_DSP_v1.1.zip中的SRIO部分的代码，

其中 SRIO_Interrupts.c中的函数 interrupt void SRIO_Doorbell_ISR()，应该是Doorbell中断响应函数吧，

这个函数名是怎样被映射为Doorbell中断响应函数的呢？

根据我的理解，应该需要一个映射，注册这个函数的代码，可是没有找到。

请指教！

9 年多前

0 Allen35065 9 年多前

TI__Mastermind 27075 points

同一个文件里

Uint32 uiLow_pri_Q_host_event_num;
void SRIO_Interrupts_Init(void)
{
/* Disable Global host interrupts. */
gpCIC0_regs->GLOBAL_ENABLE_HINT_REG= 0;

uiLow_pri_Q_host_event_num= 18;
/*map INTD1 low priority queue channel 0 interrupt event to CIC0 out 18*/
KeyStone_CIC_event_map(gpCIC0_regs, CSL_CIC0_QMSS_INTD_1_LOW_0, uiLow_pri_Q_host_event_num);

/* Enable Global host interrupts. */
gpCIC0_regs->GLOBAL_ENABLE_HINT_REG= 1;

/*map SRIO doorbell interrupts to INT4.
map message descriptor accumulation low priority channel 0 interrupt
to INT5*/
gpCGEM_regs->INTMUX1 =
(CSL_C66X_COREPAC_SRIO_INTDST16_PLUS_N<<CSL_CGEM_INTMUX1_INTSEL4_SHIFT)|
(CSL_C66X_COREPAC_CIC_OUT18<<CSL_CGEM_INTMUX1_INTSEL5_SHIFT);

//enable INT4, 5
CPU_interrupt_enable((1<<4)|(1<<5));

interrupt_cfg.interrupt_map = interrupt_map;
interrupt_cfg.uiNumInterruptMap =
sizeof(interrupt_map)/sizeof(SRIO_Interrupt_Map);

/*interrupt rate control is not used in this test*/
interrupt_cfg.interrupt_rate= NULL;
interrupt_cfg.uiNumInterruptRateCfg= 0;

interrupt_cfg.doorbell_route_ctl= SRIO_DOORBELL_ROUTE_TO_DEDICATE_INT;

srio_cfg.interrupt_cfg = &interrupt_cfg;

}