From 47b5c838af92d3504e99633bf568578203b7305f Mon Sep 17 00:00:00 2001 From: Linas Vepstas Date: Fri, 15 Sep 2006 18:57:42 -0500 Subject: [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 Signed-off-by: Paul Mackerras --- arch/powerpc/platforms/pseries/eeh.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) (limited to 'arch/powerpc') 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 @@ -481,6 +481,35 @@ eeh_slot_availability(struct pci_dn *pdn) return -1; } +/** + * 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 -- cgit v1.2.3-59-g8ed1b