diff options
| author | Linas Vepstas <linas@austin.ibm.com> | 2006-09-16 01:57:42 +0200 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2006-09-21 14:59:14 +0200 |
| commit | 47b5c838af92d3504e99633bf568578203b7305f (patch) | |
| tree | 0122e533f39c48572d74a592c61ac394466fff01 | |
| parent | [POWERPC] EEH: code comment cleanup (diff) | |
| download | linux-47b5c838af92d3504e99633bf568578203b7305f.tar.xz linux-47b5c838af92d3504e99633bf568578203b7305f.zip | |
[POWERPC] EEH: enable MMIO/DMA on frozen slot
Add wrapper around the rtas call to enable MMIO or DMA on a frozen pci
slot.
Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
| -rw-r--r-- | arch/powerpc/platforms/pseries/eeh.c | 29 | ||||
| -rw-r--r-- | include/asm-powerpc/ppc-pci.h | 11 |
2 files changed, 40 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/pseries/eeh.c b/arch/powerpc/platforms/pseries/eeh.c index fb91842fc819..4534886e3b4e 100644 --- a/arch/powerpc/platforms/pseries/eeh.c +++ b/arch/powerpc/platforms/pseries/eeh.c @@ -482,6 +482,35 @@ eeh_slot_availability(struct pci_dn *pdn) } /** + * rtas_pci_enable - enable MMIO or DMA transfers for this slot + * @pdn pci device node + */ + +int +rtas_pci_enable(struct pci_dn *pdn, int function) +{ + int config_addr; + int rc; + + /* Use PE configuration address, if present */ + config_addr = pdn->eeh_config_addr; + if (pdn->eeh_pe_config_addr) + config_addr = pdn->eeh_pe_config_addr; + + rc = rtas_call(ibm_set_eeh_option, 4, 1, NULL, + config_addr, + BUID_HI(pdn->phb->buid), + BUID_LO(pdn->phb->buid), + function); + + if (rc) + printk(KERN_WARNING "EEH: Cannot enable function %d, err=%d dn=%s\n", + function, rc, pdn->node->full_name); + + return rc; +} + +/** * rtas_pci_slot_reset - raises/lowers the pci #RST line * @pdn pci device node * @state: 1/0 to raise/lower the #RST diff --git a/include/asm-powerpc/ppc-pci.h b/include/asm-powerpc/ppc-pci.h index cf79bc7ebb55..1115756c79f9 100644 --- a/include/asm-powerpc/ppc-pci.h +++ b/include/asm-powerpc/ppc-pci.h @@ -69,6 +69,17 @@ struct pci_dev *pci_get_device_by_addr(unsigned long addr); void eeh_slot_error_detail (struct pci_dn *pdn, int severity); /** + * rtas_pci_enableo - enable IO transfers for this slot + * @pdn: pci device node + * @function: either EEH_THAW_MMIO or EEH_THAW_DMA + * + * Enable I/O transfers to this slot + */ +#define EEH_THAW_MMIO 2 +#define EEH_THAW_DMA 3 +int rtas_pci_enable(struct pci_dn *pdn, int function); + +/** * rtas_set_slot_reset -- unfreeze a frozen slot * * Clear the EEH-frozen condition on a slot. This routine |