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powerpc/pci: Disable filling pci-OF-bus-map for non-chrp/powermac

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Creating or filling pci-OF-bus-map property in the device-tree is
deprecated since May 2006 [1] and was used only in old platforms like
PowerMac.

Currently kernel code handles it only for chrp and powermac code. So
completely disable filling pci-OF-bus-map property for non-chrp and
non-powermac platforms.

[1] - https://lore.kernel.org/linuxppc-dev/1148016268.13249.14.camel@localhost.localdomain/

Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220706104308.5390-5-pali@kernel.org
This commit is contained in:
Pali Rohár 2022-07-06 12:43:07 +02:00 committed by Michael Ellerman
parent 7045445887
commit 7f102d6198
1 changed files with 10 additions and 3 deletions
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13
arch/powerpc/kernel/pci_32.c
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@ -37,15 +37,12 @@ EXPORT_SYMBOL(isa_io_base);
EXPORT_SYMBOL(pci_dram_offset);
static void fixup_cpc710_pci64(struct pci_dev* dev);
static u8* pci_to_OF_bus_map;
/* By default, we don't re-assign bus numbers. We do this only on
* some pmacs
*/
static int pci_assign_all_buses;
static int pci_bus_count;
/* This will remain NULL for now, until isa-bridge.c is made common
* to both 32-bit and 64-bit.
*/
@ -65,6 +62,11 @@ fixup_cpc710_pci64(struct pci_dev* dev)
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CPC710_PCI64, fixup_cpc710_pci64);
#if defined(CONFIG_PPC_PMAC) || defined(CONFIG_PPC_CHRP)
static u8* pci_to_OF_bus_map;
static int pci_bus_count;
/*
* Functions below are used on OpenFirmware machines.
*/
@ -221,6 +223,8 @@ pci_create_OF_bus_map(void)
}
#endif
#endif /* defined(CONFIG_PPC_PMAC) || defined(CONFIG_PPC_CHRP) */
void pcibios_setup_phb_io_space(struct pci_controller *hose)
{
unsigned long io_offset;
@ -252,6 +256,8 @@ static int __init pcibios_init(void)
if (pci_assign_all_buses || next_busno <= hose->last_busno)
next_busno = hose->last_busno + pcibios_assign_bus_offset;
}
#if defined(CONFIG_PPC_PMAC) || defined(CONFIG_PPC_CHRP)
pci_bus_count = next_busno;
/* OpenFirmware based machines need a map of OF bus
@ -260,6 +266,7 @@ static int __init pcibios_init(void)
*/
if (pci_assign_all_buses)
pcibios_make_OF_bus_map();
#endif
/* Call common code to handle resource allocation */
pcibios_resource_survey();