[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>
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Коммит
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@ -481,6 +481,35 @@ eeh_slot_availability(struct pci_dn *pdn)
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return -1;
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}
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/**
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* rtas_pci_enable - enable MMIO or DMA transfers for this slot
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* @pdn pci device node
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*/
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int
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rtas_pci_enable(struct pci_dn *pdn, int function)
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{
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int config_addr;
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int rc;
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/* Use PE configuration address, if present */
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config_addr = pdn->eeh_config_addr;
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if (pdn->eeh_pe_config_addr)
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config_addr = pdn->eeh_pe_config_addr;
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rc = rtas_call(ibm_set_eeh_option, 4, 1, NULL,
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config_addr,
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BUID_HI(pdn->phb->buid),
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BUID_LO(pdn->phb->buid),
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function);
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if (rc)
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printk(KERN_WARNING "EEH: Cannot enable function %d, err=%d dn=%s\n",
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function, rc, pdn->node->full_name);
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return rc;
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}
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/**
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* rtas_pci_slot_reset - raises/lowers the pci #RST line
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* @pdn pci device node
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@ -68,6 +68,17 @@ struct pci_dev *pci_get_device_by_addr(unsigned long addr);
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*/
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void eeh_slot_error_detail (struct pci_dn *pdn, int severity);
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/**
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* rtas_pci_enableo - enable IO transfers for this slot
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* @pdn: pci device node
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* @function: either EEH_THAW_MMIO or EEH_THAW_DMA
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*
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* Enable I/O transfers to this slot
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*/
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#define EEH_THAW_MMIO 2
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#define EEH_THAW_DMA 3
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int rtas_pci_enable(struct pci_dn *pdn, int function);
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/**
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* rtas_set_slot_reset -- unfreeze a frozen slot
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*
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