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PCI: Add defines for normal and subtractive PCI bridges

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Add these PCI class codes to pci_ids.h:

  PCI_CLASS_BRIDGE_PCI_NORMAL
  PCI_CLASS_BRIDGE_PCI_SUBTRACTIVE

Use these defines in all kernel code for describing PCI class codes for
normal and subtractive PCI bridges.

[bhelgaas: similar change in pci-mvebu.c]
Link: https://lore.kernel.org/r/20220214114109.26809-1-pali@kernel.org
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Pali Rohár
2022-02-14 12:41:08 +01:00
committed by Bjorn Helgaas
parent e783362eb5
commit 904b10fb18
24 changed files with 38 additions and 37 deletions
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16
drivers/pci/controller/dwc/pci-meson.c
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@@ -313,14 +313,14 @@ static int meson_pcie_rd_own_conf(struct pci_bus *bus, u32 devfn,
* cannot program the PCI_CLASS_DEVICE register, so we must fabricate
* the return value in the config accessors.
*/
if (where == PCI_CLASS_REVISION && size == 4)
*val = (PCI_CLASS_BRIDGE_PCI << 16) | (*val & 0xffff);
else if (where == PCI_CLASS_DEVICE && size == 2)
*val = PCI_CLASS_BRIDGE_PCI;
else if (where == PCI_CLASS_DEVICE && size == 1)
*val = PCI_CLASS_BRIDGE_PCI & 0xff;
else if (where == PCI_CLASS_DEVICE + 1 && size == 1)
*val = (PCI_CLASS_BRIDGE_PCI >> 8) & 0xff;
if ((where & ~3) == PCI_CLASS_REVISION) {
if (size <= 2)
*val = (*val & ((1 << (size * 8)) - 1)) << (8 * (where & 3));
*val &= ~0xffffff00;
*val |= PCI_CLASS_BRIDGE_PCI_NORMAL << 8;
if (size <= 2)
*val = (*val >> (8 * (where & 3))) & ((1 << (size * 8)) - 1);
}
return PCIBIOS_SUCCESSFUL;
}