diff options
Diffstat (limited to 'arch/powerpc/platforms/powernv/pci.h')
| -rw-r--r-- | arch/powerpc/platforms/powernv/pci.h | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/powernv/pci.h b/arch/powerpc/platforms/powernv/pci.h index d4dbc49..28ae4ca 100644 --- a/arch/powerpc/platforms/powernv/pci.h +++ b/arch/powerpc/platforms/powernv/pci.h @@ -9,6 +9,50 @@ enum pnv_phb_type { PNV_PHB_IODA2, }; +/* Data associated with a PE, including IOMMU tracking etc.. */ +struct pnv_ioda_pe { + /* A PE can be associated with a single device or an + * entire bus (& children). In the former case, pdev + * is populated, in the later case, pbus is. + */ + struct pci_dev *pdev; + struct pci_bus *pbus; + + /* Effective RID (device RID for a device PE and base bus + * RID with devfn 0 for a bus PE) + */ + unsigned int rid; + + /* PE number */ + unsigned int pe_number; + + /* "Weight" assigned to the PE for the sake of DMA resource + * allocations + */ + unsigned int dma_weight; + + /* This is a PCI-E -> PCI-X bridge, this points to the + * corresponding bus PE + */ + struct pnv_ioda_pe *bus_pe; + + /* "Base" iommu table, ie, 4K TCEs, 32-bit DMA */ + int tce32_seg; + int tce32_segcount; + struct iommu_table tce32_table; + + /* XXX TODO: Add support for additional 64-bit iommus */ + + /* MSIs. MVE index is identical for for 32 and 64 bit MSI + * and -1 if not supported. (It's actually identical to the + * PE number) + */ + int mve_number; + + /* Link in list of PE#s */ + struct list_head link; +}; + struct pnv_phb { struct pci_controller *hose; enum pnv_phb_type type; @@ -34,6 +78,45 @@ struct pnv_phb { struct { struct iommu_table iommu_table; } p5ioc2; + + struct { + /* Global bridge info */ + unsigned int total_pe; + unsigned int m32_size; + unsigned int m32_segsize; + unsigned int m32_pci_base; + unsigned int io_size; + unsigned int io_segsize; + unsigned int io_pci_base; + + /* PE allocation bitmap */ + unsigned long *pe_alloc; + + /* M32 & IO segment maps */ + unsigned int *m32_segmap; + unsigned int *io_segmap; + struct pnv_ioda_pe *pe_array; + + /* Reverse map of PEs, will have to extend if + * we are to support more than 256 PEs, indexed + * bus { bus, devfn } + */ + unsigned char pe_rmap[0x10000]; + + /* 32-bit TCE tables allocation */ + unsigned long tce32_count; + + /* Total "weight" for the sake of DMA resources + * allocation + */ + unsigned int dma_weight; + unsigned int dma_pe_count; + + /* Sorted list of used PE's, sorted at + * boot for resource allocation purposes + */ + struct list_head pe_list; + } ioda; }; }; @@ -43,6 +126,7 @@ extern void pnv_pci_setup_iommu_table(struct iommu_table *tbl, void *tce_mem, u64 tce_size, u64 dma_offset); extern void pnv_pci_init_p5ioc2_hub(struct device_node *np); +extern void pnv_pci_init_ioda_hub(struct device_node *np); #endif /* __POWERNV_PCI_H */ |
