测试发现，网络程序在执行中断的时候，导致了其余中断丢失，于是，想通过设置中断优先级来处理。
tmp = intc_bank_read_reg(bank, INTC_REVISION) & 0xff;
printk(KERN_INFO "IRQ: Found an INTC at 0x%p "
"(revision %ld.%ld) with %d interrupts\n",
bank->base_reg, tmp >> 4, tmp & 0xf, bank->nr_irqs);
printk(KERN_INFO "IRQ: Found an INTC at 0x%p "
"(revision %ld.%ld) with %d interrupts\n",
bank->base_reg, tmp >> 4, tmp & 0xf, bank->nr_irqs);
tmp = intc_bank_read_reg(bank, INTC_SYSCONFIG);
tmp |= 1 << 1; /* soft reset */
intc_bank_write_reg(tmp, bank, INTC_SYSCONFIG);
tmp |= 1 << 1; /* soft reset */
intc_bank_write_reg(tmp, bank, INTC_SYSCONFIG);
while (!(intc_bank_read_reg(bank, INTC_SYSSTATUS) & 0x1))
/* Wait for reset to complete */;
/* Wait for reset to complete */;
/* Enable autoidle */
intc_bank_write_reg(1 << 0, bank, INTC_SYSCONFIG);
intc_bank_write_reg(1 << 0, bank, INTC_SYSCONFIG);
intc_bank_write_reg((0 << 2), bank, INTC_ILR0 + 62*4); //gpio3
intc_bank_write_reg((0 << 2), bank, INTC_ILR0 + 63*4); //gpio3
intc_bank_write_reg(40 << 2, bank, INTC_ILR0 + 40*4); //eth
intc_bank_write_reg(40 << 2, bank, INTC_ILR0 + 41*4); //eth
intc_bank_write_reg(40 << 2, bank, INTC_ILR0 + 42*4); //eth
intc_bank_write_reg(40 << 2, bank, INTC_ILR0 + 43*4); //eth
intc_bank_write_reg(40 << 2, bank, INTC_ILR0 + 41*4); //eth
intc_bank_write_reg(40 << 2, bank, INTC_ILR0 + 42*4); //eth
intc_bank_write_reg(40 << 2, bank, INTC_ILR0 + 43*4); //eth
将现在使用的gpio3_21作为中断的优先级设置成0。网络优先级设置成40
测试后，发现，没有解决问题，不知道这样设置对不对？
还需要设置别的地方吗？
还有就是中断嵌套的问题，正在执行的中断可以被新的中断抢占吗？如何设置？