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Commit 9b9ff2e16a4609a7ab39b12e67fc56b51c8cd1f4

Authored by Grant Grundler
Committed by Kyle McMartin
1 parent 7c0b67efe9
Exists in master and in 7 other branches imx_3.0.35_4.1.0, imx_3.10.17_1.0.1_ga, imx_3.10.53_1.1.0_ga, imx_3.14.28_1.0.0_ga, smarc-imx_3.10.53_1.1.0_ga, smarc-imx_3.14.28_1.0.0_ga, smarc-l5.0.0_1.0.0-ga

[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>

Showing 1 changed file with 7 additions and 1 deletions Side-by-side Diff

include/asm-parisc/pci.h
Diff comments   View file @ 9b9ff2e
... ... @@ -84,11 +84,17 @@
84 84 /*
85 85 ** Convert between PCI (IO_VIEW) addresses and processor (PA_VIEW) addresses.
86 86 ** See pcibios.c for more conversions used by Generic PCI code.
  87 +**
  88 +** Platform characteristics/firmware guarantee that
  89 +** (1) PA_VIEW - IO_VIEW = lmmio_offset for both LMMIO and ELMMIO
  90 +** (2) PA_VIEW == IO_VIEW for GMMIO
87 91 */
88 92 #define PCI_BUS_ADDR(hba,a) (PCI_IS_LMMIO(hba,a) \
89 93 ? ((a) - hba->lmmio_space_offset) /* mangle LMMIO */ \
90 94 : (a)) /* GMMIO */
91   -#define PCI_HOST_ADDR(hba,a) ((a) + hba->lmmio_space_offset)
  95 +#define PCI_HOST_ADDR(hba,a) (((a) & PCI_F_EXTEND) == 0 \
  96 + ? (a) + hba->lmmio_space_offset \
  97 + : (a))
92 98  
93 99 #else /* !CONFIG_64BIT */
94 100