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pci: Add standard PCIe ECAM macros

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Lot of PCIe controllers are using ECAM addressing. So add common ECAM
macros into U-Boot's pci.h header file which can be suitable for most
PCI controller drivers.

Replace custom ECAM address macros in every PCI controller driver by new
ECAM macros from U-Boot's pci.h header file.

Similar macros are defined also in Linux kernel. There is a small
difference between Linux and these new U-Boot macros.

U-Boot's PCIE_ECAM_OFFSET() takes device and function numbers in separate
arguments. Linux's PCIE_ECAM_OFFSET() takes device and function numbers
encoded in one argument. The reason is that U-Boot's PCI_DEVFN() macro is
different than Linux's PCI_SLOT() macro. So having device and function
numbers in separate arguments makes code more straightforward.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
This commit is contained in:
Pali Rohár
2021-11-03 01:01:05 +01:00
committed by Tom Rini
parent b814e0007e
commit a4bc38da27
7 changed files with 37 additions and 41 deletions
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5
drivers/pci/pcie_xilinx.c
View File

@@ -76,10 +76,7 @@ static int pcie_xilinx_config_address(const struct udevice *udev, pci_dev_t bdf,
return -ENODEV;
addr = pcie->cfg_base;
addr += bus << 20;
addr += dev << 15;
addr += func << 12;
addr += offset;
addr += PCIE_ECAM_OFFSET(bus, dev, func, offset);
*paddress = addr;
return 0;