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Altera_Forum's avatar
Altera_Forum
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15 years ago

How to request multiply MSI interrupts?

Hi !!! Developing a network device driver on Arria2 GX (Avalon-ST). Is it possible to set a vector of 8 MSI interrupts , if the design supports only MSI interrupts, not MSI - X? From the...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Yes.

If you have a single MSI vector, you have to register 1 interrupt line.

If you want to test CAN, UART interrupts, than write your kernel module.

Request irq for CAN, than for UART, with interrupt handlers.

For ex:

static irqreturn_t can_isr ( int irq, void *dev )

{

void testCAN();

printk(KERN_DEBUG " CAN received irq = %d \n", irq);

return IRQ_HANDLED;

}

static irqreturn_t uart_isr ( int irq, void *dev )

{

void testUART();

printk(KERN_DEBUG " UART received irq = %d \n", irq);

return IRQ_HANDLED;

}