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PCI: tegra: Use PCI_CONF1_EXT_ADDRESS() macro

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Simplify pci-tegra.c driver code and use new PCI_CONF1_EXT_ADDRESS() macro
for accessing PCI config space.

Link: https://lore.kernel.org/r/20220928121911.14994-1-pali@kernel.org
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Acked-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Pali Rohár 2022-09-28 14:19:11 +02:00 committed by Lorenzo Pieralisi
parent 2301a3e1a5
commit 8bb7ff12a9
1 changed files with 3 additions and 8 deletions
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11
drivers/pci/controller/pci-tegra.c
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@ -415,13 +415,6 @@ static inline u32 pads_readl(struct tegra_pcie *pcie, unsigned long offset)
* address (access to which generates correct config transaction) falls in
* this 4 KiB region.
*/
static unsigned int tegra_pcie_conf_offset(u8 bus, unsigned int devfn,
unsigned int where)
{
return ((where & 0xf00) << 16) | (bus << 16) | (PCI_SLOT(devfn) << 11) |
(PCI_FUNC(devfn) << 8) | (where & 0xff);
}
static void __iomem *tegra_pcie_map_bus(struct pci_bus *bus,
unsigned int devfn,
int where)
@ -443,7 +436,9 @@ static void __iomem *tegra_pcie_map_bus(struct pci_bus *bus,
unsigned int offset;
u32 base;
offset = tegra_pcie_conf_offset(bus->number, devfn, where);
offset = PCI_CONF1_EXT_ADDRESS(bus->number, PCI_SLOT(devfn),
PCI_FUNC(devfn), where) &
~PCI_CONF1_ENABLE;
/* move 4 KiB window to offset within the FPCI region */
base = 0xfe100000 + ((offset & ~(SZ_4K - 1)) >> 8);