michaelh/zephyr
1
0
Fork 0
Code Releases Activity

Add _loapic_isr_vector_get to mvic

Browse source 
The kernel event logger requires this function to obtain
the irq that is being processed, but this was not implemented
for mvic. This patch add this function to mvic.

Change-Id: I5e1b4a6e2758b69ec713c18ac9f78aebad18a93f
Signed-off-by: Yonattan Louise <yonattan.a.louise.mendoza@intel.com>
This commit is contained in:
Yonattan Louise 2015-12-01 16:29:23 -06:00 • committed by Anas Nashif
commit dc12b5d06a
1 changed files with 28 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

28
drivers/interrupt_controller/mvic.c
View file

@ -73,6 +73,8 @@
#define LOAPIC_ENABLE 0x100 /* APIC Enabled */
#define LOAPIC_MVIC_ISR 0x110 /* MVIC In-Service Register offset */
/* forward declarations */
static void _mvic_rte_set(unsigned int irq, uint32_t value);
@ -523,3 +525,29 @@ void loapic_int_vec_trigger(unsigned int vector)
*(volatile int *)(CONFIG_LOAPIC_BASE_ADDRESS + LOAPIC_ICRLO) = icr_cmd;
}
/**
* @brief Find the currently executing interrupt vector, if any
*
* This routine finds the vector of the interrupt that is being processed.
* The ISR (In-Service Register) register contain the vectors of the interrupts
* in service. And the higher vector is the indentification of the interrupt
* being currently processed.
*
* MVIC ISR registers' offsets:
* --------------------
* | Offset | bits |
* --------------------
* | 0110H | 32:63 |
* --------------------
*
* @return The vector of the interrupt that is currently being processed.
*/
int _loapic_isr_vector_get(void)
{
/* pointer to ISR vector table */
volatile int *pReg;
pReg = (volatile int *)(CONFIG_LOAPIC_BASE_ADDRESS + LOAPIC_MVIC_ISR);
return 32 + (find_msb_set(*pReg) - 1);
}