diff options
Diffstat (limited to 'arch/powerpc/platforms/powernv/pci.c')
-rw-r--r-- | arch/powerpc/platforms/powernv/pci.c | 214 |
1 files changed, 18 insertions, 196 deletions
diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c index c0bea75ac27b..35f566aa0424 100644 --- a/arch/powerpc/platforms/powernv/pci.c +++ b/arch/powerpc/platforms/powernv/pci.c @@ -18,7 +18,6 @@ #include <asm/sections.h> #include <asm/io.h> -#include <asm/prom.h> #include <asm/pci-bridge.h> #include <asm/machdep.h> #include <asm/msi_bitmap.h> @@ -38,7 +37,7 @@ static DEFINE_MUTEX(tunnel_mutex); int pnv_pci_get_slot_id(struct device_node *np, uint64_t *id) { - struct device_node *parent = np; + struct device_node *node = np; u32 bdfn; u64 phbid; int ret; @@ -48,25 +47,29 @@ int pnv_pci_get_slot_id(struct device_node *np, uint64_t *id) return -ENXIO; bdfn = ((bdfn & 0x00ffff00) >> 8); - while ((parent = of_get_parent(parent))) { - if (!PCI_DN(parent)) { - of_node_put(parent); + for (node = np; node; node = of_get_parent(node)) { + if (!PCI_DN(node)) { + of_node_put(node); break; } - if (!of_device_is_compatible(parent, "ibm,ioda2-phb") && - !of_device_is_compatible(parent, "ibm,ioda3-phb")) { - of_node_put(parent); + if (!of_device_is_compatible(node, "ibm,ioda2-phb") && + !of_device_is_compatible(node, "ibm,ioda3-phb") && + !of_device_is_compatible(node, "ibm,ioda2-npu2-opencapi-phb")) { + of_node_put(node); continue; } - ret = of_property_read_u64(parent, "ibm,opal-phbid", &phbid); + ret = of_property_read_u64(node, "ibm,opal-phbid", &phbid); if (ret) { - of_node_put(parent); + of_node_put(node); return -ENXIO; } - *id = PCI_SLOT_ID(phbid, bdfn); + if (of_device_is_compatible(node, "ibm,ioda2-npu2-opencapi-phb")) + *id = PCI_PHB_SLOT_ID(phbid); + else + *id = PCI_SLOT_ID(phbid, bdfn); return 0; } @@ -156,75 +159,6 @@ exit: } EXPORT_SYMBOL_GPL(pnv_pci_set_power_state); -int pnv_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type) -{ - struct pci_controller *hose = pci_bus_to_host(pdev->bus); - struct pnv_phb *phb = hose->private_data; - struct msi_desc *entry; - struct msi_msg msg; - int hwirq; - unsigned int virq; - int rc; - - if (WARN_ON(!phb) || !phb->msi_bmp.bitmap) - return -ENODEV; - - if (pdev->no_64bit_msi && !phb->msi32_support) - return -ENODEV; - - for_each_pci_msi_entry(entry, pdev) { - if (!entry->msi_attrib.is_64 && !phb->msi32_support) { - pr_warn("%s: Supports only 64-bit MSIs\n", - pci_name(pdev)); - return -ENXIO; - } - hwirq = msi_bitmap_alloc_hwirqs(&phb->msi_bmp, 1); - if (hwirq < 0) { - pr_warn("%s: Failed to find a free MSI\n", - pci_name(pdev)); - return -ENOSPC; - } - virq = irq_create_mapping(NULL, phb->msi_base + hwirq); - if (!virq) { - pr_warn("%s: Failed to map MSI to linux irq\n", - pci_name(pdev)); - msi_bitmap_free_hwirqs(&phb->msi_bmp, hwirq, 1); - return -ENOMEM; - } - rc = phb->msi_setup(phb, pdev, phb->msi_base + hwirq, - virq, entry->msi_attrib.is_64, &msg); - if (rc) { - pr_warn("%s: Failed to setup MSI\n", pci_name(pdev)); - irq_dispose_mapping(virq); - msi_bitmap_free_hwirqs(&phb->msi_bmp, hwirq, 1); - return rc; - } - irq_set_msi_desc(virq, entry); - pci_write_msi_msg(virq, &msg); - } - return 0; -} - -void pnv_teardown_msi_irqs(struct pci_dev *pdev) -{ - struct pci_controller *hose = pci_bus_to_host(pdev->bus); - struct pnv_phb *phb = hose->private_data; - struct msi_desc *entry; - irq_hw_number_t hwirq; - - if (WARN_ON(!phb)) - return; - - for_each_pci_msi_entry(entry, pdev) { - if (!entry->irq) - continue; - hwirq = virq_to_hw(entry->irq); - irq_set_msi_desc(entry->irq, NULL); - irq_dispose_mapping(entry->irq); - msi_bitmap_free_hwirqs(&phb->msi_bmp, hwirq - phb->msi_base, 1); - } -} - /* Nicely print the contents of the PE State Tables (PEST). */ static void pnv_pci_dump_pest(__be64 pestA[], __be64 pestB[], int pest_size) { @@ -709,7 +643,7 @@ int pnv_pci_cfg_write(struct pci_dn *pdn, return PCIBIOS_SUCCESSFUL; } -#if CONFIG_EEH +#ifdef CONFIG_EEH static bool pnv_pci_cfg_check(struct pci_dn *pdn) { struct eeh_dev *edev = NULL; @@ -810,53 +744,6 @@ struct iommu_table *pnv_pci_table_alloc(int nid) return tbl; } -void pnv_pci_dma_dev_setup(struct pci_dev *pdev) -{ - struct pci_controller *hose = pci_bus_to_host(pdev->bus); - struct pnv_phb *phb = hose->private_data; -#ifdef CONFIG_PCI_IOV - struct pnv_ioda_pe *pe; - struct pci_dn *pdn; - - /* Fix the VF pdn PE number */ - if (pdev->is_virtfn) { - pdn = pci_get_pdn(pdev); - WARN_ON(pdn->pe_number != IODA_INVALID_PE); - list_for_each_entry(pe, &phb->ioda.pe_list, list) { - if (pe->rid == ((pdev->bus->number << 8) | - (pdev->devfn & 0xff))) { - pdn->pe_number = pe->pe_number; - pe->pdev = pdev; - break; - } - } - } -#endif /* CONFIG_PCI_IOV */ - - if (phb && phb->dma_dev_setup) - phb->dma_dev_setup(phb, pdev); -} - -void pnv_pci_dma_bus_setup(struct pci_bus *bus) -{ - struct pci_controller *hose = bus->sysdata; - struct pnv_phb *phb = hose->private_data; - struct pnv_ioda_pe *pe; - - list_for_each_entry(pe, &phb->ioda.pe_list, list) { - if (!(pe->flags & (PNV_IODA_PE_BUS | PNV_IODA_PE_BUS_ALL))) - continue; - - if (!pe->pbus) - continue; - - if (bus->number == ((pe->rid >> 8) & 0xFF)) { - pe->pbus = bus; - break; - } - } -} - struct device_node *pnv_pci_get_phb_node(struct pci_dev *dev) { struct pci_controller *hose = pci_bus_to_host(dev->bus); @@ -867,10 +754,9 @@ EXPORT_SYMBOL(pnv_pci_get_phb_node); int pnv_pci_set_tunnel_bar(struct pci_dev *dev, u64 addr, int enable) { - __be64 val; - struct pci_controller *hose; - struct pnv_phb *phb; + struct pnv_phb *phb = pci_bus_to_pnvhb(dev->bus); u64 tunnel_bar; + __be64 val; int rc; if (!opal_check_token(OPAL_PCI_GET_PBCQ_TUNNEL_BAR)) @@ -878,9 +764,6 @@ int pnv_pci_set_tunnel_bar(struct pci_dev *dev, u64 addr, int enable) if (!opal_check_token(OPAL_PCI_SET_PBCQ_TUNNEL_BAR)) return -ENXIO; - hose = pci_bus_to_host(dev->bus); - phb = hose->private_data; - mutex_lock(&tunnel_mutex); rc = opal_pci_get_pbcq_tunnel_bar(phb->opal_id, &val); if (rc != OPAL_SUCCESS) { @@ -931,7 +814,7 @@ void pnv_pci_shutdown(void) /* Fixup wrong class code in p7ioc and p8 root complex */ static void pnv_p7ioc_rc_quirk(struct pci_dev *dev) { - dev->class = PCI_CLASS_BRIDGE_PCI << 8; + dev->class = PCI_CLASS_BRIDGE_PCI_NORMAL; } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_IBM, 0x3b9, pnv_p7ioc_rc_quirk); @@ -962,11 +845,6 @@ void __init pnv_pci_init(void) pcie_ports_disabled = true; #endif - /* Look for IODA IO-Hubs. */ - for_each_compatible_node(np, NULL, "ibm,ioda-hub") { - pnv_pci_init_ioda_hub(np); - } - /* Look for ioda2 built-in PHB3's */ for_each_compatible_node(np, NULL, "ibm,ioda2-phb") pnv_pci_init_ioda2_phb(np); @@ -975,17 +853,6 @@ void __init pnv_pci_init(void) for_each_compatible_node(np, NULL, "ibm,ioda3-phb") pnv_pci_init_ioda2_phb(np); - /* Look for NPU PHBs */ - for_each_compatible_node(np, NULL, "ibm,ioda2-npu-phb") - pnv_pci_init_npu_phb(np); - - /* - * Look for NPU2 PHBs which we treat mostly as NPU PHBs with - * the exception of TCE kill which requires an OPAL call. - */ - for_each_compatible_node(np, NULL, "ibm,ioda2-npu2-phb") - pnv_pci_init_npu_phb(np); - /* Look for NPU2 OpenCAPI PHBs */ for_each_compatible_node(np, NULL, "ibm,ioda2-npu2-opencapi-phb") pnv_pci_init_npu2_opencapi_phb(np); @@ -993,48 +860,3 @@ void __init pnv_pci_init(void) /* Configure IOMMU DMA hooks */ set_pci_dma_ops(&dma_iommu_ops); } - -static int pnv_tce_iommu_bus_notifier(struct notifier_block *nb, - unsigned long action, void *data) -{ - struct device *dev = data; - struct pci_dev *pdev; - struct pci_dn *pdn; - struct pnv_ioda_pe *pe; - struct pci_controller *hose; - struct pnv_phb *phb; - - switch (action) { - case BUS_NOTIFY_ADD_DEVICE: - pdev = to_pci_dev(dev); - pdn = pci_get_pdn(pdev); - hose = pci_bus_to_host(pdev->bus); - phb = hose->private_data; - - WARN_ON_ONCE(!phb); - if (!pdn || pdn->pe_number == IODA_INVALID_PE || !phb) - return 0; - - pe = &phb->ioda.pe_array[pdn->pe_number]; - if (!pe->table_group.group) - return 0; - iommu_add_device(&pe->table_group, dev); - return 0; - case BUS_NOTIFY_DEL_DEVICE: - iommu_del_device(dev); - return 0; - default: - return 0; - } -} - -static struct notifier_block pnv_tce_iommu_bus_nb = { - .notifier_call = pnv_tce_iommu_bus_notifier, -}; - -static int __init pnv_tce_iommu_bus_notifier_init(void) -{ - bus_register_notifier(&pci_bus_type, &pnv_tce_iommu_bus_nb); - return 0; -} -machine_subsys_initcall_sync(powernv, pnv_tce_iommu_bus_notifier_init); |