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[PARISC] Make PCI_HOST_ADDR and PCI_BUS_ADDR symmetrical
Change to asm-parisc/pci.h makes the define of PCI_HOST_ADDR symmetrical
with PCI_BUS_ADDR. Also add a comment about PA_VIEW and LMMIO/ELMMIO/GMMIO.
Signed-off-by: Grant Grundler <grundler@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
authored by
Grant Grundler
and committed by
Kyle McMartin
9b9ff2e1
7c0b67ef
+7
-1
include/asm-parisc/pci.h
+7
-1
include/asm-parisc/pci.h
···
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/*
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** Convert between PCI (IO_VIEW) addresses and processor (PA_VIEW) addresses.
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** See pcibios.c for more conversions used by Generic PCI code.
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**
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** Platform characteristics/firmware guarantee that
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** (1) PA_VIEW - IO_VIEW = lmmio_offset for both LMMIO and ELMMIO
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** (2) PA_VIEW == IO_VIEW for GMMIO
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*/
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#define PCI_BUS_ADDR(hba,a) (PCI_IS_LMMIO(hba,a) \
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? ((a) - hba->lmmio_space_offset) /* mangle LMMIO */ \
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: (a)) /* GMMIO */
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-
#define PCI_HOST_ADDR(hba,a) ((a) + hba->lmmio_space_offset)
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#define PCI_HOST_ADDR(hba,a) (((a) & PCI_F_EXTEND) == 0 \
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? (a) + hba->lmmio_space_offset \
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: (a))
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#else /* !CONFIG_64BIT */
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