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| author |   David S. Miller <davem@sunset.davemloft.net> | 2006-02-09 22:20:01 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-03-20 01:12:12 -0800 |
| commit | 7eae642f75e0f7fbce7c37b2dfe0641ff1e9ebfd (patch) | |
| tree | bc308c82a5670163470b44b6f339d1b379a97347 /arch/sparc64/kernel/pci_sun4v_asm.S | |
| parent | [SPARC64]: More SUN4V PCI controller work. (diff) | |
| download | linux-dev-7eae642f75e0f7fbce7c37b2dfe0641ff1e9ebfd.tar.xz linux-dev-7eae642f75e0f7fbce7c37b2dfe0641ff1e9ebfd.zip | |
[SPARC64]: Implement SUN4V PCI config space access.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/kernel/pci_sun4v_asm.S')
| -rw-r--r-- | arch/sparc64/kernel/pci_sun4v_asm.S | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/sparc64/kernel/pci_sun4v_asm.S b/arch/sparc64/kernel/pci_sun4v_asm.S index fd2fe0edf168..2f1147146abe 100644 --- a/arch/sparc64/kernel/pci_sun4v_asm.S +++ b/arch/sparc64/kernel/pci_sun4v_asm.S @@ -54,3 +54,51 @@ pci_sun4v_iommu_demap: ta HV_FAST_TRAP retl mov %o1, %o0 + + /* %o0: devhandle + * %o1: pci_device + * %o2: pci_config_offset + * %o3: size + * + * returns %o0: data + * + * If there is an error, the data will be returned + * as all 1's. + */ + .globl pci_sun4v_config_get +pci_sun4v_config_get: + mov %o3, %o4 + mov %o2, %o3 + mov %o1, %o2 + mov %o0, %o1 + mov HV_FAST_PCI_CONFIG_GET, %o0 + ta HV_FAST_TRAP + brnz,a,pn %o1, 1f + mov -1, %o2 +1: retl + mov %o2, %o0 + + /* %o0: devhandle + * %o1: pci_device + * %o2: pci_config_offset + * %o3: size + * %o4: data + * + * returns %o0: status + * + * status will be zero if the operation completed + * successfully, else -1 if not + */ + .globl pci_sun4v_config_put +pci_sun4v_config_put: + mov %o3, %o4 + mov %o2, %o3 + mov %o1, %o2 + mov %o0, %o1 + mov HV_FAST_PCI_CONFIG_PUT, %o0 + ta HV_FAST_TRAP + brnz,a,pn %o1, 1f + mov -1, %o1 +1: retl + mov %o1, %o0 + |