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> 12a755a45dSJan Glauber #include <asm/pci_clp.h> 13d0b08853SJan Glauber #include <asm/pci_debug.h> 14bd3a1725SMartin Schwidefsky #include <asm/sclp.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 35f9dc447eSSebastian Ott #define ZPCI_FMB_DMA_COUNTER_VALID (1 << 23) 36f9dc447eSSebastian Ott 37f9dc447eSSebastian Ott struct zpci_fmb_fmt0 { 38f9dc447eSSebastian Ott u64 dma_rbytes; 39f9dc447eSSebastian Ott u64 dma_wbytes; 40f9dc447eSSebastian Ott }; 41f9dc447eSSebastian Ott 42f9dc447eSSebastian Ott struct zpci_fmb_fmt1 { 43f9dc447eSSebastian Ott u64 rx_bytes; 44f9dc447eSSebastian Ott u64 rx_packets; 45f9dc447eSSebastian Ott u64 tx_bytes; 46f9dc447eSSebastian Ott u64 tx_packets; 47f9dc447eSSebastian Ott }; 48f9dc447eSSebastian Ott 49f9dc447eSSebastian Ott struct zpci_fmb_fmt2 { 50f9dc447eSSebastian Ott u64 consumed_work_units; 51f9dc447eSSebastian Ott u64 max_work_units; 52f9dc447eSSebastian Ott }; 53f9dc447eSSebastian Ott 54d0b08853SJan Glauber struct zpci_fmb { 55d0b08853SJan Glauber u32 format : 8; 56f9dc447eSSebastian Ott u32 fmt_ind : 24; 57d0b08853SJan Glauber u32 samples; 58d0b08853SJan Glauber u64 last_update; 59f9dc447eSSebastian Ott /* common counters */ 60d0b08853SJan Glauber u64 ld_ops; 61d0b08853SJan Glauber u64 st_ops; 62d0b08853SJan Glauber u64 stb_ops; 63d0b08853SJan Glauber u64 rpcit_ops; 64f9dc447eSSebastian Ott /* format specific counters */ 65f9dc447eSSebastian Ott union { 66f9dc447eSSebastian Ott struct zpci_fmb_fmt0 fmt0; 67f9dc447eSSebastian Ott struct zpci_fmb_fmt1 fmt1; 68f9dc447eSSebastian Ott struct zpci_fmb_fmt2 fmt2; 69f9dc447eSSebastian Ott }; 709d89d9e6SSebastian Ott } __packed __aligned(128); 71d0b08853SJan Glauber 72cd248341SJan Glauber enum zpci_state { 73783684f1SSebastian Ott ZPCI_FN_STATE_STANDBY = 0, 74783684f1SSebastian Ott ZPCI_FN_STATE_CONFIGURED = 1, 75783684f1SSebastian Ott ZPCI_FN_STATE_RESERVED = 2, 76783684f1SSebastian Ott ZPCI_FN_STATE_ONLINE = 3, 77cd248341SJan Glauber }; 78cd248341SJan Glauber 79cd248341SJan Glauber struct zpci_bar_struct { 807a572a3aSSebastian Ott struct resource *res; /* bus resource */ 81cd248341SJan Glauber u32 val; /* bar start & 3 flag bits */ 82cd248341SJan Glauber u16 map_idx; /* index into bar mapping array */ 837a572a3aSSebastian Ott u8 size; /* order 2 exponent */ 84cd248341SJan Glauber }; 85cd248341SJan Glauber 868128f23cSGerald Schaefer struct s390_domain; 878128f23cSGerald Schaefer 88cd248341SJan Glauber /* Private data per function */ 89cd248341SJan Glauber struct zpci_dev { 90cd248341SJan Glauber struct pci_bus *bus; 91cd248341SJan Glauber struct list_head entry; /* list of all zpci_devices, needed for hotplug, etc. */ 92cd248341SJan Glauber 93cd248341SJan Glauber enum zpci_state state; 94cd248341SJan Glauber u32 fid; /* function ID, used by sclp */ 95cd248341SJan Glauber u32 fh; /* function handle, used by insn's */ 96ac4995b9SSebastian Ott u16 vfn; /* virtual function number */ 97cd248341SJan Glauber u16 pchid; /* physical channel ID */ 98cd248341SJan Glauber u8 pfgid; /* function group ID */ 99ac4995b9SSebastian Ott u8 pft; /* pci function type */ 100cd248341SJan Glauber u16 domain; 101cd248341SJan Glauber 10280ed156aSSebastian Ott struct mutex lock; 103ac4995b9SSebastian Ott u8 pfip[CLP_PFIP_NR_SEGMENTS]; /* pci function internal path */ 104ac4995b9SSebastian Ott u32 uid; /* user defined id */ 105ac4995b9SSebastian Ott u8 util_str[CLP_UTIL_STR_LEN]; /* utility string */ 106ac4995b9SSebastian Ott 1079a4da8a5SJan Glauber /* IRQ stuff */ 1089a4da8a5SJan Glauber u64 msi_addr; /* MSI address */ 109b19148f6SSebastian Ott unsigned int max_msi; /* maximum number of MSI's */ 1105d0d8f43SMartin Schwidefsky struct airq_iv *aibv; /* adapter interrupt bit vector */ 111795818e8SSebastian Ott unsigned long aisb; /* number of the summary bit */ 1129a4da8a5SJan Glauber 113828b35f6SJan Glauber /* DMA stuff */ 114828b35f6SJan Glauber unsigned long *dma_table; 115828b35f6SJan Glauber spinlock_t dma_table_lock; 116828b35f6SJan Glauber int tlb_refresh; 117828b35f6SJan Glauber 118828b35f6SJan Glauber spinlock_t iommu_bitmap_lock; 119828b35f6SJan Glauber unsigned long *iommu_bitmap; 12013954fd6SSebastian Ott unsigned long *lazy_bitmap; 121828b35f6SJan Glauber unsigned long iommu_size; 122828b35f6SJan Glauber unsigned long iommu_pages; 123828b35f6SJan Glauber unsigned int next_bit; 124828b35f6SJan Glauber 1257a572a3aSSebastian Ott char res_name[16]; 126cd248341SJan Glauber struct zpci_bar_struct bars[PCI_BAR_COUNT]; 127cd248341SJan Glauber 128828b35f6SJan Glauber u64 start_dma; /* Start of available DMA addresses */ 129828b35f6SJan Glauber u64 end_dma; /* End of available DMA addresses */ 130828b35f6SJan Glauber u64 dma_mask; /* DMA address space mask */ 131828b35f6SJan Glauber 132d0b08853SJan Glauber /* Function measurement block */ 133d0b08853SJan Glauber struct zpci_fmb *fmb; 134d0b08853SJan Glauber u16 fmb_update; /* update interval */ 1350b7589ecSSebastian Ott u16 fmb_length; 1366001018aSSebastian Ott /* software counters */ 1376001018aSSebastian Ott atomic64_t allocated_pages; 1386001018aSSebastian Ott atomic64_t mapped_pages; 1396001018aSSebastian Ott atomic64_t unmapped_pages; 140d0b08853SJan Glauber 141cd248341SJan Glauber enum pci_bus_speed max_bus_speed; 142d0b08853SJan Glauber 143d0b08853SJan Glauber struct dentry *debugfs_dev; 144d0b08853SJan Glauber struct dentry *debugfs_perf; 1458128f23cSGerald Schaefer 1468128f23cSGerald Schaefer struct s390_domain *s390_domain; /* s390 IOMMU domain data */ 147cd248341SJan Glauber }; 148cd248341SJan Glauber 149cd248341SJan Glauber static inline bool zdev_enabled(struct zpci_dev *zdev) 150cd248341SJan Glauber { 151cd248341SJan Glauber return (zdev->fh & (1UL << 31)) ? true : false; 152cd248341SJan Glauber } 153cd248341SJan Glauber 15493065d04SSebastian Ott extern const struct attribute_group *zpci_attr_groups[]; 15593065d04SSebastian Ott 156cd248341SJan Glauber /* ----------------------------------------------------------------------------- 157cd248341SJan Glauber Prototypes 158cd248341SJan Glauber ----------------------------------------------------------------------------- */ 159cd248341SJan Glauber /* Base stuff */ 160cd248341SJan Glauber int zpci_create_device(struct zpci_dev *); 161cd248341SJan Glauber int zpci_enable_device(struct zpci_dev *); 162cb65a669SSebastian Ott int zpci_disable_device(struct zpci_dev *); 163cd248341SJan Glauber void zpci_stop_device(struct zpci_dev *); 164828b35f6SJan Glauber int zpci_register_ioat(struct zpci_dev *, u8, u64, u64, u64); 165828b35f6SJan Glauber int zpci_unregister_ioat(struct zpci_dev *, u8); 166cd248341SJan Glauber 167a755a45dSJan Glauber /* CLP */ 1681d578966SSebastian Ott int clp_scan_pci_devices(void); 1691d578966SSebastian Ott int clp_rescan_pci_devices(void); 17057b5918cSSebastian Ott int clp_rescan_pci_devices_simple(void); 171a755a45dSJan Glauber int clp_add_pci_device(u32, u32, int); 172a755a45dSJan Glauber int clp_enable_fh(struct zpci_dev *, u8); 173a755a45dSJan Glauber int clp_disable_fh(struct zpci_dev *); 174783684f1SSebastian Ott int clp_get_state(u32 fid, enum zpci_state *state); 175a755a45dSJan Glauber 1769a17e972SSebastian Ott #ifdef CONFIG_PCI 177cbc0dd1fSJan Glauber /* Error handling and recovery */ 178cbc0dd1fSJan Glauber void zpci_event_error(void *); 179cbc0dd1fSJan Glauber void zpci_event_availability(void *); 18057b5918cSSebastian Ott void zpci_rescan(void); 181aa3b7c29SSebastian Ott bool zpci_is_enabled(void); 1829a17e972SSebastian Ott #else /* CONFIG_PCI */ 1839a17e972SSebastian Ott static inline void zpci_event_error(void *e) {} 1849a17e972SSebastian Ott static inline void zpci_event_availability(void *e) {} 18557b5918cSSebastian Ott static inline void zpci_rescan(void) {} 1869a17e972SSebastian Ott #endif /* CONFIG_PCI */ 187cbc0dd1fSJan Glauber 18867f43f38SSebastian Ott #ifdef CONFIG_HOTPLUG_PCI_S390 18967f43f38SSebastian Ott int zpci_init_slot(struct zpci_dev *); 19067f43f38SSebastian Ott void zpci_exit_slot(struct zpci_dev *); 19167f43f38SSebastian Ott #else /* CONFIG_HOTPLUG_PCI_S390 */ 19267f43f38SSebastian Ott static inline int zpci_init_slot(struct zpci_dev *zdev) 19367f43f38SSebastian Ott { 19467f43f38SSebastian Ott return 0; 19567f43f38SSebastian Ott } 19667f43f38SSebastian Ott static inline void zpci_exit_slot(struct zpci_dev *zdev) {} 19767f43f38SSebastian Ott #endif /* CONFIG_HOTPLUG_PCI_S390 */ 19867f43f38SSebastian Ott 199cd248341SJan Glauber /* Helpers */ 200198a5278SSebastian Ott static inline struct zpci_dev *to_zpci(struct pci_dev *pdev) 201198a5278SSebastian Ott { 202198a5278SSebastian Ott return pdev->sysdata; 203198a5278SSebastian Ott } 204198a5278SSebastian Ott 205cd248341SJan Glauber struct zpci_dev *get_zdev_by_fid(u32); 206cd248341SJan Glauber 207828b35f6SJan Glauber /* DMA */ 208828b35f6SJan Glauber int zpci_dma_init(void); 209828b35f6SJan Glauber void zpci_dma_exit(void); 210828b35f6SJan Glauber 211d0b08853SJan Glauber /* FMB */ 212d0b08853SJan Glauber int zpci_fmb_enable_device(struct zpci_dev *); 213d0b08853SJan Glauber int zpci_fmb_disable_device(struct zpci_dev *); 214d0b08853SJan Glauber 215d0b08853SJan Glauber /* Debug */ 216d0b08853SJan Glauber int zpci_debug_init(void); 217d0b08853SJan Glauber void zpci_debug_exit(void); 2189a99649fSSebastian Ott void zpci_debug_init_device(struct zpci_dev *, const char *); 219d0b08853SJan Glauber void zpci_debug_exit_device(struct zpci_dev *); 220d0b08853SJan Glauber void zpci_debug_info(struct zpci_dev *, struct seq_file *); 221d0b08853SJan Glauber 222bd3a1725SMartin Schwidefsky /* Error reporting */ 223bd3a1725SMartin Schwidefsky int zpci_report_error(struct pci_dev *, struct zpci_report_error_header *); 224bd3a1725SMartin Schwidefsky 2253a368f74SPhilipp Hachtmann #ifdef CONFIG_NUMA 2263a368f74SPhilipp Hachtmann 2273a368f74SPhilipp Hachtmann /* Returns the node based on PCI bus */ 2283a368f74SPhilipp Hachtmann static inline int __pcibus_to_node(const struct pci_bus *bus) 2293a368f74SPhilipp Hachtmann { 2303a368f74SPhilipp Hachtmann return NUMA_NO_NODE; 2313a368f74SPhilipp Hachtmann } 2323a368f74SPhilipp Hachtmann 2333a368f74SPhilipp Hachtmann static inline const struct cpumask * 2343a368f74SPhilipp Hachtmann cpumask_of_pcibus(const struct pci_bus *bus) 2353a368f74SPhilipp Hachtmann { 2363a368f74SPhilipp Hachtmann return cpu_online_mask; 2373a368f74SPhilipp Hachtmann } 2383a368f74SPhilipp Hachtmann 2393a368f74SPhilipp Hachtmann #endif /* CONFIG_NUMA */ 2403a368f74SPhilipp Hachtmann 241cd248341SJan Glauber #endif 242