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author | David S. Miller <davem@davemloft.net> | 2009-03-01 21:35:16 -0800 |
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committer | David S. Miller <davem@davemloft.net> | 2009-03-01 21:35:16 -0800 |
commit | aa4abc9bcce0d2a7ec189e897f8f8c58ca04643b (patch) | |
tree | 22ef88d84a2e06380bb6a853c3ba28657e4e5f92 /arch/powerpc/sysdev/ppc4xx_pci.c | |
parent | jme: Adding {64,40}bits DMA mask back (diff) | |
parent | zaurus: add usb id for motomagx phones (diff) | |
download | linux-dev-aa4abc9bcce0d2a7ec189e897f8f8c58ca04643b.tar.xz linux-dev-aa4abc9bcce0d2a7ec189e897f8f8c58ca04643b.zip |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
drivers/net/wireless/iwlwifi/iwl-tx.c
net/8021q/vlan_core.c
net/core/dev.c
Diffstat (limited to 'arch/powerpc/sysdev/ppc4xx_pci.c')
-rw-r--r-- | arch/powerpc/sysdev/ppc4xx_pci.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/powerpc/sysdev/ppc4xx_pci.c b/arch/powerpc/sysdev/ppc4xx_pci.c index 77fae5f64f2e..5558d932b4d5 100644 --- a/arch/powerpc/sysdev/ppc4xx_pci.c +++ b/arch/powerpc/sysdev/ppc4xx_pci.c @@ -204,6 +204,23 @@ static int __init ppc4xx_setup_one_pci_PMM(struct pci_controller *hose, { u32 ma, pcila, pciha; + /* Hack warning ! The "old" PCI 2.x cell only let us configure the low + * 32-bit of incoming PLB addresses. The top 4 bits of the 36-bit + * address are actually hard wired to a value that appears to depend + * on the specific SoC. For example, it's 0 on 440EP and 1 on 440EPx. + * + * The trick here is we just crop those top bits and ignore them when + * programming the chip. That means the device-tree has to be right + * for the specific part used (we don't print a warning if it's wrong + * but on the other hand, you'll crash quickly enough), but at least + * this code should work whatever the hard coded value is + */ + plb_addr &= 0xffffffffull; + + /* Note: Due to the above hack, the test below doesn't actually test + * if you address is above 4G, but it tests that address and + * (address + size) are both contained in the same 4G + */ if ((plb_addr + size) > 0xffffffffull || !is_power_of_2(size) || size < 0x1000 || (plb_addr & (size - 1)) != 0) { printk(KERN_WARNING "%s: Resource out of range\n", |