diff options
| author | Andrew Scull | 2022-04-21 16:11:11 +0000 |
|---|---|---|
| committer | Tom Rini | 2022-05-03 18:33:26 -0400 |
| commit | 7739d93d8288d9b58946ff5c5e46fb9e89599886 (patch) | |
| tree | 9b288afc525d82917979763b2d415d8973d78632 /include/pci.h | |
| parent | 12507a2d2269f36d16232d78ec15e861d3fff2d7 (diff) | |
pci: Match region flags using a mask
When converting addresses, apply a mask to the region flags during
lookup. This allows the caller to specify which flags are important and
which are not, for example to exclude system memory regions.
The behaviour of the function is changed such that they don't
preferentially search for a non-system memory region. However, system
memory regions are added after other regions in decode_regions() leading
to a similar outcome.
Signed-off-by: Andrew Scull <ascull@google.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'include/pci.h')
| -rw-r--r-- | include/pci.h | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/include/pci.h b/include/pci.h index 5175c7ea2fb..0a6b7a6f4bb 100644 --- a/include/pci.h +++ b/include/pci.h @@ -1318,11 +1318,12 @@ u32 dm_pci_read_bar32(const struct udevice *dev, int barnum); * @dev: Device containing the PCI address * @addr: PCI address to convert * @len: Length of the address range + * @mask: Mask to match flags for the region type * @flags: Flags for the region type (PCI_REGION_...) * Return: physical address corresponding to that PCI bus address */ phys_addr_t dm_pci_bus_to_phys(struct udevice *dev, pci_addr_t addr, size_t len, - unsigned long flags); + unsigned long mask, unsigned long flags); /** * dm_pci_phys_to_bus() - convert a physical address to a PCI bus address @@ -1330,11 +1331,12 @@ phys_addr_t dm_pci_bus_to_phys(struct udevice *dev, pci_addr_t addr, size_t len, * @dev: Device containing the bus address * @addr: Physical address to convert * @len: Length of the address range + * @mask: Mask to match flags for the region type * @flags: Flags for the region type (PCI_REGION_...) * Return: PCI bus address corresponding to that physical address */ pci_addr_t dm_pci_phys_to_bus(struct udevice *dev, phys_addr_t addr, size_t len, - unsigned long flags); + unsigned long mask, unsigned long flags); /** * dm_pci_map_bar() - get a virtual address associated with a BAR region @@ -1458,19 +1460,19 @@ int dm_pci_find_ext_capability(struct udevice *dev, int cap); int dm_pci_flr(struct udevice *dev); #define dm_pci_virt_to_bus(dev, addr, flags) \ - dm_pci_phys_to_bus(dev, (virt_to_phys(addr)), 0, (flags)) + dm_pci_phys_to_bus(dev, (virt_to_phys(addr)), 0, PCI_REGION_TYPE, (flags)) #define dm_pci_bus_to_virt(dev, addr, flags, len, map_flags) \ - map_physmem(dm_pci_bus_to_phys(dev, (addr), (len), (flags)), \ + map_physmem(dm_pci_bus_to_phys(dev, (addr), (len), PCI_REGION_TYPE, (flags)), \ (len), (map_flags)) #define dm_pci_phys_to_mem(dev, addr) \ - dm_pci_phys_to_bus((dev), (addr), 0, PCI_REGION_MEM) + dm_pci_phys_to_bus((dev), (addr), 0, PCI_REGION_TYPE, PCI_REGION_MEM) #define dm_pci_mem_to_phys(dev, addr) \ - dm_pci_bus_to_phys((dev), (addr), 0, PCI_REGION_MEM) + dm_pci_bus_to_phys((dev), (addr), 0, PCI_REGION_TYPE, PCI_REGION_MEM) #define dm_pci_phys_to_io(dev, addr) \ - dm_pci_phys_to_bus((dev), (addr), 0, PCI_REGION_IO) + dm_pci_phys_to_bus((dev), (addr), 0, PCI_REGION_TYPE, PCI_REGION_IO) #define dm_pci_io_to_phys(dev, addr) \ - dm_pci_bus_to_phys((dev), (addr), 0, PCI_REGION_IO) + dm_pci_bus_to_phys((dev), (addr), 0, PCI_REGION_TYPE, PCI_REGION_IO) #define dm_pci_virt_to_mem(dev, addr) \ dm_pci_virt_to_bus((dev), (addr), PCI_REGION_MEM) |