1c6557e7fSMartin Schwidefsky #ifndef __ASM_S390_PCI_H 2c6557e7fSMartin Schwidefsky #define __ASM_S390_PCI_H 3c6557e7fSMartin Schwidefsky 4cd248341SJan Glauber /* must be set before including asm-generic/pci.h */ 5c6557e7fSMartin Schwidefsky #define PCI_DMA_BUS_IS_PHYS (0) 6cd248341SJan Glauber /* must be set before including pci_clp.h */ 7cd248341SJan Glauber #define PCI_BAR_COUNT 6 8c6557e7fSMartin Schwidefsky 957b5918cSSebastian Ott #include <linux/pci.h> 10cd248341SJan Glauber #include <asm-generic/pci.h> 11cd248341SJan Glauber #include <asm-generic/pci-dma-compat.h> 12a755a45dSJan Glauber #include <asm/pci_clp.h> 13d0b08853SJan Glauber #include <asm/pci_debug.h> 14c6557e7fSMartin Schwidefsky 15cd248341SJan Glauber #define PCIBIOS_MIN_IO 0x1000 16cd248341SJan Glauber #define PCIBIOS_MIN_MEM 0x10000000 17cd248341SJan Glauber 18cd248341SJan Glauber #define pcibios_assign_all_busses() (0) 19cd248341SJan Glauber 20cd248341SJan Glauber void __iomem *pci_iomap(struct pci_dev *, int, unsigned long); 21cd248341SJan Glauber void pci_iounmap(struct pci_dev *, void __iomem *); 22cd248341SJan Glauber int pci_domain_nr(struct pci_bus *); 23cd248341SJan Glauber int pci_proc_domain(struct pci_bus *); 24cd248341SJan Glauber 25cd248341SJan Glauber #define ZPCI_BUS_NR 0 /* default bus number */ 26cd248341SJan Glauber #define ZPCI_DEVFN 0 /* default device number */ 27cd248341SJan Glauber 28cd248341SJan Glauber /* PCI Function Controls */ 29cd248341SJan Glauber #define ZPCI_FC_FN_ENABLED 0x80 30cd248341SJan Glauber #define ZPCI_FC_ERROR 0x40 31cd248341SJan Glauber #define ZPCI_FC_BLOCKED 0x20 32cd248341SJan Glauber #define ZPCI_FC_DMA_ENABLED 0x10 33cd248341SJan Glauber 34d0b08853SJan Glauber struct zpci_fmb { 35d0b08853SJan Glauber u32 format : 8; 36d0b08853SJan Glauber u32 dma_valid : 1; 37d0b08853SJan Glauber u32 : 23; 38d0b08853SJan Glauber u32 samples; 39d0b08853SJan Glauber u64 last_update; 40d0b08853SJan Glauber /* hardware counters */ 41d0b08853SJan Glauber u64 ld_ops; 42d0b08853SJan Glauber u64 st_ops; 43d0b08853SJan Glauber u64 stb_ops; 44d0b08853SJan Glauber u64 rpcit_ops; 45d0b08853SJan Glauber u64 dma_rbytes; 46d0b08853SJan Glauber u64 dma_wbytes; 47d0b08853SJan Glauber /* software counters */ 48d0b08853SJan Glauber atomic64_t allocated_pages; 49d0b08853SJan Glauber atomic64_t mapped_pages; 50d0b08853SJan Glauber atomic64_t unmapped_pages; 51d0b08853SJan Glauber } __packed __aligned(16); 52d0b08853SJan Glauber 53cd248341SJan Glauber enum zpci_state { 54cd248341SJan Glauber ZPCI_FN_STATE_RESERVED, 55cd248341SJan Glauber ZPCI_FN_STATE_STANDBY, 56cd248341SJan Glauber ZPCI_FN_STATE_CONFIGURED, 57cd248341SJan Glauber ZPCI_FN_STATE_ONLINE, 58cd248341SJan Glauber NR_ZPCI_FN_STATES, 59cd248341SJan Glauber }; 60cd248341SJan Glauber 61cd248341SJan Glauber struct zpci_bar_struct { 627a572a3aSSebastian Ott struct resource *res; /* bus resource */ 63cd248341SJan Glauber u32 val; /* bar start & 3 flag bits */ 64cd248341SJan Glauber u16 map_idx; /* index into bar mapping array */ 657a572a3aSSebastian Ott u8 size; /* order 2 exponent */ 66cd248341SJan Glauber }; 67cd248341SJan Glauber 68cd248341SJan Glauber /* Private data per function */ 69cd248341SJan Glauber struct zpci_dev { 70cd248341SJan Glauber struct pci_dev *pdev; 71cd248341SJan Glauber struct pci_bus *bus; 72cd248341SJan Glauber struct list_head entry; /* list of all zpci_devices, needed for hotplug, etc. */ 73cd248341SJan Glauber 74cd248341SJan Glauber enum zpci_state state; 75cd248341SJan Glauber u32 fid; /* function ID, used by sclp */ 76cd248341SJan Glauber u32 fh; /* function handle, used by insn's */ 77ac4995b9SSebastian Ott u16 vfn; /* virtual function number */ 78cd248341SJan Glauber u16 pchid; /* physical channel ID */ 79cd248341SJan Glauber u8 pfgid; /* function group ID */ 80ac4995b9SSebastian Ott u8 pft; /* pci function type */ 81cd248341SJan Glauber u16 domain; 82cd248341SJan Glauber 83ac4995b9SSebastian Ott u8 pfip[CLP_PFIP_NR_SEGMENTS]; /* pci function internal path */ 84ac4995b9SSebastian Ott u32 uid; /* user defined id */ 85ac4995b9SSebastian Ott u8 util_str[CLP_UTIL_STR_LEN]; /* utility string */ 86ac4995b9SSebastian Ott 879a4da8a5SJan Glauber /* IRQ stuff */ 889a4da8a5SJan Glauber u64 msi_addr; /* MSI address */ 89b19148f6SSebastian Ott unsigned int max_msi; /* maximum number of MSI's */ 905d0d8f43SMartin Schwidefsky struct airq_iv *aibv; /* adapter interrupt bit vector */ 919a4da8a5SJan Glauber unsigned int aisb; /* number of the summary bit */ 929a4da8a5SJan Glauber 93828b35f6SJan Glauber /* DMA stuff */ 94828b35f6SJan Glauber unsigned long *dma_table; 95828b35f6SJan Glauber spinlock_t dma_table_lock; 96828b35f6SJan Glauber int tlb_refresh; 97828b35f6SJan Glauber 98828b35f6SJan Glauber spinlock_t iommu_bitmap_lock; 99828b35f6SJan Glauber unsigned long *iommu_bitmap; 100828b35f6SJan Glauber unsigned long iommu_size; 101828b35f6SJan Glauber unsigned long iommu_pages; 102828b35f6SJan Glauber unsigned int next_bit; 103828b35f6SJan Glauber 1047a572a3aSSebastian Ott char res_name[16]; 105cd248341SJan Glauber struct zpci_bar_struct bars[PCI_BAR_COUNT]; 106cd248341SJan Glauber 107828b35f6SJan Glauber u64 start_dma; /* Start of available DMA addresses */ 108828b35f6SJan Glauber u64 end_dma; /* End of available DMA addresses */ 109828b35f6SJan Glauber u64 dma_mask; /* DMA address space mask */ 110828b35f6SJan Glauber 111d0b08853SJan Glauber /* Function measurement block */ 112d0b08853SJan Glauber struct zpci_fmb *fmb; 113d0b08853SJan Glauber u16 fmb_update; /* update interval */ 114d0b08853SJan Glauber 115cd248341SJan Glauber enum pci_bus_speed max_bus_speed; 116d0b08853SJan Glauber 117d0b08853SJan Glauber struct dentry *debugfs_dev; 118d0b08853SJan Glauber struct dentry *debugfs_perf; 119cd248341SJan Glauber }; 120cd248341SJan Glauber 121cd248341SJan Glauber static inline bool zdev_enabled(struct zpci_dev *zdev) 122cd248341SJan Glauber { 123cd248341SJan Glauber return (zdev->fh & (1UL << 31)) ? true : false; 124cd248341SJan Glauber } 125cd248341SJan Glauber 12693065d04SSebastian Ott extern const struct attribute_group *zpci_attr_groups[]; 12793065d04SSebastian Ott 128cd248341SJan Glauber /* ----------------------------------------------------------------------------- 129cd248341SJan Glauber Prototypes 130cd248341SJan Glauber ----------------------------------------------------------------------------- */ 131cd248341SJan Glauber /* Base stuff */ 132cd248341SJan Glauber int zpci_create_device(struct zpci_dev *); 133cd248341SJan Glauber int zpci_enable_device(struct zpci_dev *); 134cb65a669SSebastian Ott int zpci_disable_device(struct zpci_dev *); 135cd248341SJan Glauber void zpci_stop_device(struct zpci_dev *); 136828b35f6SJan Glauber int zpci_register_ioat(struct zpci_dev *, u8, u64, u64, u64); 137828b35f6SJan Glauber int zpci_unregister_ioat(struct zpci_dev *, u8); 138cd248341SJan Glauber 139a755a45dSJan Glauber /* CLP */ 1401d578966SSebastian Ott int clp_scan_pci_devices(void); 1411d578966SSebastian Ott int clp_rescan_pci_devices(void); 14257b5918cSSebastian Ott int clp_rescan_pci_devices_simple(void); 143a755a45dSJan Glauber int clp_add_pci_device(u32, u32, int); 144a755a45dSJan Glauber int clp_enable_fh(struct zpci_dev *, u8); 145a755a45dSJan Glauber int clp_disable_fh(struct zpci_dev *); 146a755a45dSJan Glauber 1479a17e972SSebastian Ott #ifdef CONFIG_PCI 148cbc0dd1fSJan Glauber /* Error handling and recovery */ 149cbc0dd1fSJan Glauber void zpci_event_error(void *); 150cbc0dd1fSJan Glauber void zpci_event_availability(void *); 15157b5918cSSebastian Ott void zpci_rescan(void); 152aa3b7c29SSebastian Ott bool zpci_is_enabled(void); 1539a17e972SSebastian Ott #else /* CONFIG_PCI */ 1549a17e972SSebastian Ott static inline void zpci_event_error(void *e) {} 1559a17e972SSebastian Ott static inline void zpci_event_availability(void *e) {} 15657b5918cSSebastian Ott static inline void zpci_rescan(void) {} 1579a17e972SSebastian Ott #endif /* CONFIG_PCI */ 158cbc0dd1fSJan Glauber 15967f43f38SSebastian Ott #ifdef CONFIG_HOTPLUG_PCI_S390 16067f43f38SSebastian Ott int zpci_init_slot(struct zpci_dev *); 16167f43f38SSebastian Ott void zpci_exit_slot(struct zpci_dev *); 16267f43f38SSebastian Ott #else /* CONFIG_HOTPLUG_PCI_S390 */ 16367f43f38SSebastian Ott static inline int zpci_init_slot(struct zpci_dev *zdev) 16467f43f38SSebastian Ott { 16567f43f38SSebastian Ott return 0; 16667f43f38SSebastian Ott } 16767f43f38SSebastian Ott static inline void zpci_exit_slot(struct zpci_dev *zdev) {} 16867f43f38SSebastian Ott #endif /* CONFIG_HOTPLUG_PCI_S390 */ 16967f43f38SSebastian Ott 170cd248341SJan Glauber /* Helpers */ 171cd248341SJan Glauber struct zpci_dev *get_zdev(struct pci_dev *); 172cd248341SJan Glauber struct zpci_dev *get_zdev_by_fid(u32); 173cd248341SJan Glauber 174828b35f6SJan Glauber /* DMA */ 175828b35f6SJan Glauber int zpci_dma_init(void); 176828b35f6SJan Glauber void zpci_dma_exit(void); 177828b35f6SJan Glauber 178d0b08853SJan Glauber /* FMB */ 179d0b08853SJan Glauber int zpci_fmb_enable_device(struct zpci_dev *); 180d0b08853SJan Glauber int zpci_fmb_disable_device(struct zpci_dev *); 181d0b08853SJan Glauber 182d0b08853SJan Glauber /* Debug */ 183d0b08853SJan Glauber int zpci_debug_init(void); 184d0b08853SJan Glauber void zpci_debug_exit(void); 185d0b08853SJan Glauber void zpci_debug_init_device(struct zpci_dev *); 186d0b08853SJan Glauber void zpci_debug_exit_device(struct zpci_dev *); 187d0b08853SJan Glauber void zpci_debug_info(struct zpci_dev *, struct seq_file *); 188d0b08853SJan Glauber 189cd248341SJan Glauber #endif 190