1 /* 2 * Copyright 2010 Tilera Corporation. All Rights Reserved. 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public License 6 * as published by the Free Software Foundation, version 2. 7 * 8 * This program is distributed in the hope that it will be useful, but 9 * WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or 11 * NON INFRINGEMENT. See the GNU General Public License for 12 * more details. 13 */ 14 15 #ifndef _ASM_TILE_PCI_H 16 #define _ASM_TILE_PCI_H 17 18 #include <linux/pci.h> 19 #include <asm-generic/pci_iomap.h> 20 21 /* 22 * Structure of a PCI controller (host bridge) 23 */ 24 struct pci_controller { 25 int index; /* PCI domain number */ 26 struct pci_bus *root_bus; 27 28 int first_busno; 29 int last_busno; 30 31 int hv_cfg_fd[2]; /* config{0,1} fds for this PCIe controller */ 32 int hv_mem_fd; /* fd to Hypervisor for MMIO operations */ 33 34 struct pci_ops *ops; 35 36 int irq_base; /* Base IRQ from the Hypervisor */ 37 int plx_gen1; /* flag for PLX Gen 1 configuration */ 38 39 /* Address ranges that are routed to this controller/bridge. */ 40 struct resource mem_resources[3]; 41 }; 42 43 /* 44 * The hypervisor maps the entirety of CPA-space as bus addresses, so 45 * bus addresses are physical addresses. The networking and block 46 * device layers use this boolean for bounce buffer decisions. 47 */ 48 #define PCI_DMA_BUS_IS_PHYS 1 49 50 int __init tile_pci_init(void); 51 int __init pcibios_init(void); 52 pci_iounmap(struct pci_dev * dev,void __iomem * addr)53static inline void pci_iounmap(struct pci_dev *dev, void __iomem *addr) {} 54 55 void __devinit pcibios_fixup_bus(struct pci_bus *bus); 56 57 #define TILE_NUM_PCIE 2 58 59 #define pci_domain_nr(bus) (((struct pci_controller *)(bus)->sysdata)->index) 60 61 /* 62 * This decides whether to display the domain number in /proc. 63 */ pci_proc_domain(struct pci_bus * bus)64static inline int pci_proc_domain(struct pci_bus *bus) 65 { 66 return 1; 67 } 68 69 /* 70 * pcibios_assign_all_busses() tells whether or not the bus numbers 71 * should be reassigned, in case the BIOS didn't do it correctly, or 72 * in case we don't have a BIOS and we want to let Linux do it. 73 */ pcibios_assign_all_busses(void)74static inline int pcibios_assign_all_busses(void) 75 { 76 return 1; 77 } 78 79 #define PCIBIOS_MIN_MEM 0 80 #define PCIBIOS_MIN_IO 0 81 82 /* 83 * This flag tells if the platform is TILEmpower that needs 84 * special configuration for the PLX switch chip. 85 */ 86 extern int tile_plx_gen1; 87 88 /* Use any cpu for PCI. */ 89 #define cpumask_of_pcibus(bus) cpu_online_mask 90 91 /* implement the pci_ DMA API in terms of the generic device dma_ one */ 92 #include <asm-generic/pci-dma-compat.h> 93 94 /* generic pci stuff */ 95 #include <asm-generic/pci.h> 96 97 #endif /* _ASM_TILE_PCI_H */ 98