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further implemented PCI interrupt handler logic

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This commit is contained in:
Markus Fröschle
2013-12-17 16:27:22 +00:00
parent 51938eef49
commit 6f6b9d74d6
1 changed files with 22 additions and 3 deletions
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25
BaS_gcc/sources/pci.c
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@@ -150,7 +150,7 @@ __attribute__((interrupt)) void pci_interrupt(void)
{
}
int32_t pci_get_interrupt_cause(int32_t *handles)
static int32_t pci_get_interrupt_cause(int32_t *handles)
{
int32_t handle;
@@ -169,6 +169,12 @@ int32_t pci_get_interrupt_cause(int32_t *handles)
return -1;
}
static int32_t pci_call_interrupt_chain(int32_t handle, int32_t data)
{
return data; /* unmodified - means: not handled */
}
#ifdef MACHINE_M5484LITE
/*
* This gets called from irq5 in exceptions.S
* Once we arrive here, the SR has been set to disable interrupts and the gcc scratch registers have been saved
@@ -176,12 +182,18 @@ int32_t pci_get_interrupt_cause(int32_t *handles)
void irq5_handler(void)
{
int32_t handle;
int32_t value;
int32_t newvalue;
MCF_EPORT_EPFR |= (1 << 5); /* clear interrupt from edge port */
xprintf("IRQ5!\r\n");
if ((handle = pci_get_interrupt_cause(handles)) > 0)
{
;
newvalue = pci_call_interrupt_chain(handle, value);
if (newvalue == value)
{
debug_printf("%s: interrupt not handled!\r\n", __FUNCTION__);
}
}
}
@@ -192,14 +204,21 @@ void irq5_handler(void)
void irq7_handler(void)
{
int32_t handle;
int32_t value;
int32_t newvalue;
MCF_EPORT_EPFR |= (1 << 7);
debug_printf("IRQ7!\r\n");
if ((handle = pci_get_interrupt_cause(handles)) > 0)
{
;
newvalue = pci_call_interrupt_chain(handle, value);
if (newvalue == value)
{
debug_printf("%s: interrupt not handled!\r\n", __FUNCTION__);
}
}
}
#endif /* MACHINE_M548X */
/*
* retrieve handle for i'th device