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> 1080ed156aSSebastian Ott #include <linux/mutex.h> 11cd248341SJan Glauber #include <asm-generic/pci.h> 12cd248341SJan Glauber #include <asm-generic/pci-dma-compat.h> 13a755a45dSJan Glauber #include <asm/pci_clp.h> 14d0b08853SJan Glauber #include <asm/pci_debug.h> 15c6557e7fSMartin Schwidefsky 16cd248341SJan Glauber #define PCIBIOS_MIN_IO 0x1000 17cd248341SJan Glauber #define PCIBIOS_MIN_MEM 0x10000000 18cd248341SJan Glauber 19cd248341SJan Glauber #define pcibios_assign_all_busses() (0) 20cd248341SJan Glauber 21cd248341SJan Glauber void __iomem *pci_iomap(struct pci_dev *, int, unsigned long); 22cd248341SJan Glauber void pci_iounmap(struct pci_dev *, void __iomem *); 23cd248341SJan Glauber int pci_domain_nr(struct pci_bus *); 24cd248341SJan Glauber int pci_proc_domain(struct pci_bus *); 25cd248341SJan Glauber 26cd248341SJan Glauber #define ZPCI_BUS_NR 0 /* default bus number */ 27cd248341SJan Glauber #define ZPCI_DEVFN 0 /* default device number */ 28cd248341SJan Glauber 29cd248341SJan Glauber /* PCI Function Controls */ 30cd248341SJan Glauber #define ZPCI_FC_FN_ENABLED 0x80 31cd248341SJan Glauber #define ZPCI_FC_ERROR 0x40 32cd248341SJan Glauber #define ZPCI_FC_BLOCKED 0x20 33cd248341SJan Glauber #define ZPCI_FC_DMA_ENABLED 0x10 34cd248341SJan Glauber 35d0b08853SJan Glauber struct zpci_fmb { 36d0b08853SJan Glauber u32 format : 8; 37d0b08853SJan Glauber u32 dma_valid : 1; 38d0b08853SJan Glauber u32 : 23; 39d0b08853SJan Glauber u32 samples; 40d0b08853SJan Glauber u64 last_update; 41d0b08853SJan Glauber /* hardware counters */ 42d0b08853SJan Glauber u64 ld_ops; 43d0b08853SJan Glauber u64 st_ops; 44d0b08853SJan Glauber u64 stb_ops; 45d0b08853SJan Glauber u64 rpcit_ops; 46d0b08853SJan Glauber u64 dma_rbytes; 47d0b08853SJan Glauber u64 dma_wbytes; 48d0b08853SJan Glauber } __packed __aligned(16); 49d0b08853SJan Glauber 50cd248341SJan Glauber enum zpci_state { 51cd248341SJan Glauber ZPCI_FN_STATE_RESERVED, 52cd248341SJan Glauber ZPCI_FN_STATE_STANDBY, 53cd248341SJan Glauber ZPCI_FN_STATE_CONFIGURED, 54cd248341SJan Glauber ZPCI_FN_STATE_ONLINE, 55cd248341SJan Glauber NR_ZPCI_FN_STATES, 56cd248341SJan Glauber }; 57cd248341SJan Glauber 58cd248341SJan Glauber struct zpci_bar_struct { 597a572a3aSSebastian Ott struct resource *res; /* bus resource */ 60cd248341SJan Glauber u32 val; /* bar start & 3 flag bits */ 61cd248341SJan Glauber u16 map_idx; /* index into bar mapping array */ 627a572a3aSSebastian Ott u8 size; /* order 2 exponent */ 63cd248341SJan Glauber }; 64cd248341SJan Glauber 658128f23cSGerald Schaefer struct s390_domain; 668128f23cSGerald Schaefer 67cd248341SJan Glauber /* Private data per function */ 68cd248341SJan Glauber struct zpci_dev { 69cd248341SJan Glauber struct pci_bus *bus; 70cd248341SJan Glauber struct list_head entry; /* list of all zpci_devices, needed for hotplug, etc. */ 71cd248341SJan Glauber 72cd248341SJan Glauber enum zpci_state state; 73cd248341SJan Glauber u32 fid; /* function ID, used by sclp */ 74cd248341SJan Glauber u32 fh; /* function handle, used by insn's */ 75ac4995b9SSebastian Ott u16 vfn; /* virtual function number */ 76cd248341SJan Glauber u16 pchid; /* physical channel ID */ 77cd248341SJan Glauber u8 pfgid; /* function group ID */ 78ac4995b9SSebastian Ott u8 pft; /* pci function type */ 79cd248341SJan Glauber u16 domain; 80cd248341SJan Glauber 8180ed156aSSebastian Ott struct mutex lock; 82ac4995b9SSebastian Ott u8 pfip[CLP_PFIP_NR_SEGMENTS]; /* pci function internal path */ 83ac4995b9SSebastian Ott u32 uid; /* user defined id */ 84ac4995b9SSebastian Ott u8 util_str[CLP_UTIL_STR_LEN]; /* utility string */ 85ac4995b9SSebastian Ott 869a4da8a5SJan Glauber /* IRQ stuff */ 879a4da8a5SJan Glauber u64 msi_addr; /* MSI address */ 88b19148f6SSebastian Ott unsigned int max_msi; /* maximum number of MSI's */ 895d0d8f43SMartin Schwidefsky struct airq_iv *aibv; /* adapter interrupt bit vector */ 909a4da8a5SJan Glauber unsigned int aisb; /* number of the summary bit */ 919a4da8a5SJan Glauber 92828b35f6SJan Glauber /* DMA stuff */ 93828b35f6SJan Glauber unsigned long *dma_table; 94828b35f6SJan Glauber spinlock_t dma_table_lock; 95828b35f6SJan Glauber int tlb_refresh; 96828b35f6SJan Glauber 97828b35f6SJan Glauber spinlock_t iommu_bitmap_lock; 98828b35f6SJan Glauber unsigned long *iommu_bitmap; 99828b35f6SJan Glauber unsigned long iommu_size; 100828b35f6SJan Glauber unsigned long iommu_pages; 101828b35f6SJan Glauber unsigned int next_bit; 102828b35f6SJan Glauber 1037a572a3aSSebastian Ott char res_name[16]; 104cd248341SJan Glauber struct zpci_bar_struct bars[PCI_BAR_COUNT]; 105cd248341SJan Glauber 106828b35f6SJan Glauber u64 start_dma; /* Start of available DMA addresses */ 107828b35f6SJan Glauber u64 end_dma; /* End of available DMA addresses */ 108828b35f6SJan Glauber u64 dma_mask; /* DMA address space mask */ 109828b35f6SJan Glauber 110d0b08853SJan Glauber /* Function measurement block */ 111d0b08853SJan Glauber struct zpci_fmb *fmb; 112d0b08853SJan Glauber u16 fmb_update; /* update interval */ 1136001018aSSebastian Ott /* software counters */ 1146001018aSSebastian Ott atomic64_t allocated_pages; 1156001018aSSebastian Ott atomic64_t mapped_pages; 1166001018aSSebastian Ott atomic64_t unmapped_pages; 117d0b08853SJan Glauber 118cd248341SJan Glauber enum pci_bus_speed max_bus_speed; 119d0b08853SJan Glauber 120d0b08853SJan Glauber struct dentry *debugfs_dev; 121d0b08853SJan Glauber struct dentry *debugfs_perf; 1228128f23cSGerald Schaefer 1238128f23cSGerald Schaefer struct s390_domain *s390_domain; /* s390 IOMMU domain data */ 124cd248341SJan Glauber }; 125cd248341SJan Glauber 126cd248341SJan Glauber static inline bool zdev_enabled(struct zpci_dev *zdev) 127cd248341SJan Glauber { 128cd248341SJan Glauber return (zdev->fh & (1UL << 31)) ? true : false; 129cd248341SJan Glauber } 130cd248341SJan Glauber 13193065d04SSebastian Ott extern const struct attribute_group *zpci_attr_groups[]; 13293065d04SSebastian Ott 133cd248341SJan Glauber /* ----------------------------------------------------------------------------- 134cd248341SJan Glauber Prototypes 135cd248341SJan Glauber ----------------------------------------------------------------------------- */ 136cd248341SJan Glauber /* Base stuff */ 137cd248341SJan Glauber int zpci_create_device(struct zpci_dev *); 138cd248341SJan Glauber int zpci_enable_device(struct zpci_dev *); 139cb65a669SSebastian Ott int zpci_disable_device(struct zpci_dev *); 140cd248341SJan Glauber void zpci_stop_device(struct zpci_dev *); 141828b35f6SJan Glauber int zpci_register_ioat(struct zpci_dev *, u8, u64, u64, u64); 142828b35f6SJan Glauber int zpci_unregister_ioat(struct zpci_dev *, u8); 143cd248341SJan Glauber 144a755a45dSJan Glauber /* CLP */ 1451d578966SSebastian Ott int clp_scan_pci_devices(void); 1461d578966SSebastian Ott int clp_rescan_pci_devices(void); 14757b5918cSSebastian Ott int clp_rescan_pci_devices_simple(void); 148a755a45dSJan Glauber int clp_add_pci_device(u32, u32, int); 149a755a45dSJan Glauber int clp_enable_fh(struct zpci_dev *, u8); 150a755a45dSJan Glauber int clp_disable_fh(struct zpci_dev *); 151a755a45dSJan Glauber 1529a17e972SSebastian Ott #ifdef CONFIG_PCI 153cbc0dd1fSJan Glauber /* Error handling and recovery */ 154cbc0dd1fSJan Glauber void zpci_event_error(void *); 155cbc0dd1fSJan Glauber void zpci_event_availability(void *); 15657b5918cSSebastian Ott void zpci_rescan(void); 157aa3b7c29SSebastian Ott bool zpci_is_enabled(void); 1589a17e972SSebastian Ott #else /* CONFIG_PCI */ 1599a17e972SSebastian Ott static inline void zpci_event_error(void *e) {} 1609a17e972SSebastian Ott static inline void zpci_event_availability(void *e) {} 16157b5918cSSebastian Ott static inline void zpci_rescan(void) {} 1629a17e972SSebastian Ott #endif /* CONFIG_PCI */ 163cbc0dd1fSJan Glauber 16467f43f38SSebastian Ott #ifdef CONFIG_HOTPLUG_PCI_S390 16567f43f38SSebastian Ott int zpci_init_slot(struct zpci_dev *); 16667f43f38SSebastian Ott void zpci_exit_slot(struct zpci_dev *); 16767f43f38SSebastian Ott #else /* CONFIG_HOTPLUG_PCI_S390 */ 16867f43f38SSebastian Ott static inline int zpci_init_slot(struct zpci_dev *zdev) 16967f43f38SSebastian Ott { 17067f43f38SSebastian Ott return 0; 17167f43f38SSebastian Ott } 17267f43f38SSebastian Ott static inline void zpci_exit_slot(struct zpci_dev *zdev) {} 17367f43f38SSebastian Ott #endif /* CONFIG_HOTPLUG_PCI_S390 */ 17467f43f38SSebastian Ott 175cd248341SJan Glauber /* Helpers */ 176198a5278SSebastian Ott static inline struct zpci_dev *to_zpci(struct pci_dev *pdev) 177198a5278SSebastian Ott { 178198a5278SSebastian Ott return pdev->sysdata; 179198a5278SSebastian Ott } 180198a5278SSebastian Ott 181cd248341SJan Glauber struct zpci_dev *get_zdev_by_fid(u32); 182cd248341SJan Glauber 183828b35f6SJan Glauber /* DMA */ 184828b35f6SJan Glauber int zpci_dma_init(void); 185828b35f6SJan Glauber void zpci_dma_exit(void); 186828b35f6SJan Glauber 187d0b08853SJan Glauber /* FMB */ 188d0b08853SJan Glauber int zpci_fmb_enable_device(struct zpci_dev *); 189d0b08853SJan Glauber int zpci_fmb_disable_device(struct zpci_dev *); 190d0b08853SJan Glauber 191d0b08853SJan Glauber /* Debug */ 192d0b08853SJan Glauber int zpci_debug_init(void); 193d0b08853SJan Glauber void zpci_debug_exit(void); 1949a99649fSSebastian Ott void zpci_debug_init_device(struct zpci_dev *, const char *); 195d0b08853SJan Glauber void zpci_debug_exit_device(struct zpci_dev *); 196d0b08853SJan Glauber void zpci_debug_info(struct zpci_dev *, struct seq_file *); 197d0b08853SJan Glauber 1983a368f74SPhilipp Hachtmann #ifdef CONFIG_NUMA 1993a368f74SPhilipp Hachtmann 2003a368f74SPhilipp Hachtmann /* Returns the node based on PCI bus */ 2013a368f74SPhilipp Hachtmann static inline int __pcibus_to_node(const struct pci_bus *bus) 2023a368f74SPhilipp Hachtmann { 2033a368f74SPhilipp Hachtmann return NUMA_NO_NODE; 2043a368f74SPhilipp Hachtmann } 2053a368f74SPhilipp Hachtmann 2063a368f74SPhilipp Hachtmann static inline const struct cpumask * 2073a368f74SPhilipp Hachtmann cpumask_of_pcibus(const struct pci_bus *bus) 2083a368f74SPhilipp Hachtmann { 2093a368f74SPhilipp Hachtmann return cpu_online_mask; 2103a368f74SPhilipp Hachtmann } 2113a368f74SPhilipp Hachtmann 2123a368f74SPhilipp Hachtmann #endif /* CONFIG_NUMA */ 2133a368f74SPhilipp Hachtmann 214cd248341SJan Glauber #endif 215