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author | Stefan Roese <sr@denx.de> | 2009-10-29 16:54:52 +0100 |
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committer | Stefan Roese <sr@denx.de> | 2009-11-09 11:27:08 +0100 |
commit | 9a81c61249d8361ed57d81f496121f3eb9c0eee8 (patch) | |
tree | 8fdae979d28249f795d065809321bad7ca138e52 /cpu/ppc4xx/4xx_pci.c | |
parent | b0b867462c569e7accd6f78c942cbab028116ecf (diff) | |
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ppc4xx: Remove duplicated is_pci_host() functions
This patch introduces a weak default function for is_pci_host(),
returning 1. This is the default behaviour, since most boards only
implement PCI host functionality. This weak default can be overridden
by a board specific version if needed.
Signed-off-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'cpu/ppc4xx/4xx_pci.c')
-rw-r--r-- | cpu/ppc4xx/4xx_pci.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/cpu/ppc4xx/4xx_pci.c b/cpu/ppc4xx/4xx_pci.c index fa521f0..40017f4 100644 --- a/cpu/ppc4xx/4xx_pci.c +++ b/cpu/ppc4xx/4xx_pci.c @@ -478,6 +478,26 @@ void pci_init_board(void) static struct pci_controller ppc440_hose = {0}; +/* + * This routine is called to determine if a pci scan should be + * performed. With various hardware environments (especially cPCI and + * PPMC) it's insufficient to depend on the state of the arbiter enable + * bit in the strap register, or generic host/adapter assumptions. + * + * Rather than hard-code a bad assumption in the general 440 code, the + * 440 pci code requires the board to decide at runtime. + * + * Return 0 for adapter mode, non-zero for host (monarch) mode. + * + * Weak default implementation: "Normal" boards implement the PCI + * host functionality. This can be overridden for PCI adapter boards. + */ +int __is_pci_host(struct pci_controller *hose) +{ + return 1; +} +int is_pci_host(struct pci_controller *hose) + __attribute__((weak, alias("__is_pci_host"))); int pci_440_init (struct pci_controller *hose) { |