diff options
| author | Tim Wawrzynczak <twawrzynczak@chromium.org> | 2021-06-24 11:48:27 -0600 |
|---|---|---|
| committer | Tim Wawrzynczak <twawrzynczak@chromium.org> | 2021-06-29 21:52:44 +0000 |
| commit | 61005c8eb53bec186bfa8a23e4f9ce755eed7437 (patch) | |
| tree | 4146d2bfd77c1fea9d8fc0d232195f51d9f6c54f /src/soc | |
| parent | e9ee919fac1fda650643b255ec536b64ead2bf31 (diff) | |
soc/intel/common/irq: Add function to return IRQ for PCI devfn
The IRQ for a single device may be required elsewhere, therefore provide
get_pci_devfn_irq.
BUG=b:130217151, b:171580862, b:176858827
Change-Id: Ibebd821767a2698c9e60b09eeeff3bb596359728
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55826
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/intel/common/block/include/intelblocks/irq.h | 5 | ||||
| -rw-r--r-- | src/soc/intel/common/block/irq/irq.c | 15 |
2 files changed, 19 insertions, 1 deletions
diff --git a/src/soc/intel/common/block/include/intelblocks/irq.h b/src/soc/intel/common/block/include/intelblocks/irq.h index 4a7a13bee0..33c9b7e7ac 100644 --- a/src/soc/intel/common/block/include/intelblocks/irq.h +++ b/src/soc/intel/common/block/include/intelblocks/irq.h @@ -7,6 +7,7 @@ #include <types.h> #define MAX_FNS 8 +#define INVALID_IRQ -1 #define ANY_PIRQ(x) [PCI_FUNC(x)] = { .fixed_int_pin = PCI_INT_NONE,\ .fixed_pirq = PIRQ_INVALID, \ @@ -61,4 +62,8 @@ bool irq_program_non_pch(void); const struct pci_irq_entry *get_cached_pci_irqs(void); +/* Search the cached PCI IRQ assignment results for the matching devfn and + return the corresponding IRQ, or INVALID_IRQ if not found. */ +int get_pci_devfn_irq(unsigned int devfn); + #endif /* SOC_INTEL_COMMON_IRQ_H */ diff --git a/src/soc/intel/common/block/irq/irq.c b/src/soc/intel/common/block/irq/irq.c index b3f5c73b38..f0892a988c 100644 --- a/src/soc/intel/common/block/irq/irq.c +++ b/src/soc/intel/common/block/irq/irq.c @@ -21,7 +21,6 @@ #define IDX2PIN(i) (enum pci_pin)((i) + PCI_INT_A) #define PIN2IDX(p) (size_t)((p) - PCI_INT_A) -#define INVALID_IRQ -1 struct pin_info { enum pin_state { @@ -429,3 +428,17 @@ bool irq_program_non_pch(void) return true; } + +int get_pci_devfn_irq(unsigned int devfn) +{ + const struct pci_irq_entry *entry = cached_entries; + + while (entry) { + if (entry->devfn == devfn) + return entry->irq; + + entry = entry->next; + } + + return INVALID_IRQ; +} |