1 #ifndef __ASM_S390_PCI_H 2 #define __ASM_S390_PCI_H 3 4 /* must be set before including asm-generic/pci.h */ 5 #define PCI_DMA_BUS_IS_PHYS (0) 6 /* must be set before including pci_clp.h */ 7 #define PCI_BAR_COUNT 6 8 9 #include <asm-generic/pci.h> 10 #include <asm-generic/pci-dma-compat.h> 11 #include <asm/pci_clp.h> 12 13 #define PCIBIOS_MIN_IO 0x1000 14 #define PCIBIOS_MIN_MEM 0x10000000 15 16 #define pcibios_assign_all_busses() (0) 17 18 void __iomem *pci_iomap(struct pci_dev *, int, unsigned long); 19 void pci_iounmap(struct pci_dev *, void __iomem *); 20 int pci_domain_nr(struct pci_bus *); 21 int pci_proc_domain(struct pci_bus *); 22 23 #define ZPCI_BUS_NR 0 /* default bus number */ 24 #define ZPCI_DEVFN 0 /* default device number */ 25 26 /* PCI Function Controls */ 27 #define ZPCI_FC_FN_ENABLED 0x80 28 #define ZPCI_FC_ERROR 0x40 29 #define ZPCI_FC_BLOCKED 0x20 30 #define ZPCI_FC_DMA_ENABLED 0x10 31 32 enum zpci_state { 33 ZPCI_FN_STATE_RESERVED, 34 ZPCI_FN_STATE_STANDBY, 35 ZPCI_FN_STATE_CONFIGURED, 36 ZPCI_FN_STATE_ONLINE, 37 NR_ZPCI_FN_STATES, 38 }; 39 40 struct zpci_bar_struct { 41 u32 val; /* bar start & 3 flag bits */ 42 u8 size; /* order 2 exponent */ 43 u16 map_idx; /* index into bar mapping array */ 44 }; 45 46 /* Private data per function */ 47 struct zpci_dev { 48 struct pci_dev *pdev; 49 struct pci_bus *bus; 50 struct list_head entry; /* list of all zpci_devices, needed for hotplug, etc. */ 51 52 enum zpci_state state; 53 u32 fid; /* function ID, used by sclp */ 54 u32 fh; /* function handle, used by insn's */ 55 u16 pchid; /* physical channel ID */ 56 u8 pfgid; /* function group ID */ 57 u16 domain; 58 59 struct zpci_bar_struct bars[PCI_BAR_COUNT]; 60 61 enum pci_bus_speed max_bus_speed; 62 }; 63 64 static inline bool zdev_enabled(struct zpci_dev *zdev) 65 { 66 return (zdev->fh & (1UL << 31)) ? true : false; 67 } 68 69 /* ----------------------------------------------------------------------------- 70 Prototypes 71 ----------------------------------------------------------------------------- */ 72 /* Base stuff */ 73 struct zpci_dev *zpci_alloc_device(void); 74 int zpci_create_device(struct zpci_dev *); 75 int zpci_enable_device(struct zpci_dev *); 76 void zpci_stop_device(struct zpci_dev *); 77 void zpci_free_device(struct zpci_dev *); 78 int zpci_scan_device(struct zpci_dev *); 79 80 /* CLP */ 81 int clp_find_pci_devices(void); 82 int clp_add_pci_device(u32, u32, int); 83 int clp_enable_fh(struct zpci_dev *, u8); 84 int clp_disable_fh(struct zpci_dev *); 85 86 /* Helpers */ 87 struct zpci_dev *get_zdev(struct pci_dev *); 88 struct zpci_dev *get_zdev_by_fid(u32); 89 bool zpci_fid_present(u32); 90 91 #endif 92