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| author | Arnd Bergmann <arnd@arndb.de> | 2022-07-15 17:36:17 +0200 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2022-07-29 12:09:32 -0500 |
| commit | c1ef322491cb880fea4e52535b15448f2a573ded (patch) | |
| tree | 205497cbb26cc3eb9c7a3f93b8dcc8f765273ec8 /arch/sparc/include | |
| parent | 0ad722f159e44983ddea1929ffd90d0c20a86f24 (diff) | |
| download | linux-c1ef322491cb880fea4e52535b15448f2a573ded.tar.bz2 | |
sparc: Use generic pci_mmap_resource_range()
The main feature of the sparc-specific implementation of
pci_mmap_resource_range() is that it allows mapping the entire PCI I/O
space for a PCI host bridge using the /proc/bus/pci interface on a bridge
device.
The generic implementation cannot do this, but it also appears that this
got broken for sparc by commit 9eff02e2042f ("PCI: check mmap range of
/proc/bus/pci files too"), which enforces that each address is part of a
BAR for kernels after 2.6.28.
Remove it all, assuming that the corresponding user space code has already
been changed to access /dev/ioport instead a long time ago. Add
pci_iobar_pfn() to make it possible to map I/O resources. This is adapted
from the powerpc version.
Link: https://lore.kernel.org/lkml/1519887203.622.3.camel@infradead.org/t/
Link: https://lore.kernel.org/r/20220715153617.3393420-2-arnd@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'arch/sparc/include')
| -rw-r--r-- | arch/sparc/include/asm/pci.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/pci.h b/arch/sparc/include/asm/pci.h index 4deddf430e5d..dff90dce6cb7 100644 --- a/arch/sparc/include/asm/pci.h +++ b/arch/sparc/include/asm/pci.h @@ -37,6 +37,7 @@ static inline int pci_proc_domain(struct pci_bus *bus) #define HAVE_PCI_MMAP #define arch_can_pci_mmap_io() 1 #define HAVE_ARCH_PCI_GET_UNMAPPED_AREA +#define ARCH_GENERIC_PCI_MMAP_RESOURCE #define get_pci_unmapped_area get_fb_unmapped_area #endif /* CONFIG_SPARC64 */ |