diff options
| author | Ian Moffett <ian@osmora.org> | 2024-05-07 19:15:26 -0400 |
|---|---|---|
| committer | Ian Moffett <ian@osmora.org> | 2024-05-07 19:17:11 -0400 |
| commit | 139d593640cf8e7cc666818a29a689d5def541ef (patch) | |
| tree | 9a9fafab290a7c4b8507b63fc928d1fe7b7befdc /sys | |
| parent | 293cb0eab638c682e951e68c404dc214772539c2 (diff) | |
kernel: pci: Add macros for fetching BAR base
Signed-off-by: Ian Moffett <ian@osmora.org>
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/include/dev/pci/pci.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/sys/include/dev/pci/pci.h b/sys/include/dev/pci/pci.h index 66ecb91..ad3f7ac 100644 --- a/sys/include/dev/pci/pci.h +++ b/sys/include/dev/pci/pci.h @@ -34,6 +34,7 @@ #include <sys/queue.h> #include <sys/cdefs.h> #include <dev/pci/pciregs.h> +#include <vm/vm.h> /* Lookup bits */ #define PCI_DEVICE_ID __BIT(0) @@ -41,6 +42,14 @@ #define PCI_CLASS __BIT(2) #define PCI_SUBCLASS __BIT(3) +/* Base address masks for BARs */ +#define PCI_BAR_MEMMASK ~7 +#define PCI_BAR_IOMASK ~3 + +/* Macros to fetch base address from BAR */ +#define PCI_BAR_MEMBASE(BAR) PHYS_TO_VIRT(BAR & PCI_BAR_MEMMASK) +#define PCI_BAR_IOBASE(BAR) PHYS_TO_VIRT(BAR & PCI_BAR_IOMASK) + /* For PCI lookups */ struct pci_lookup { uint16_t device_id; |