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> 11f42c2235SJoerg Roedel #include <linux/iommu.h> 12cd248341SJan Glauber #include <asm-generic/pci.h> 13a755a45dSJan Glauber #include <asm/pci_clp.h> 14d0b08853SJan Glauber #include <asm/pci_debug.h> 15bd3a1725SMartin Schwidefsky #include <asm/sclp.h> 16c6557e7fSMartin Schwidefsky 17cd248341SJan Glauber #define PCIBIOS_MIN_IO 0x1000 18cd248341SJan Glauber #define PCIBIOS_MIN_MEM 0x10000000 19cd248341SJan Glauber 20cd248341SJan Glauber #define pcibios_assign_all_busses() (0) 21cd248341SJan Glauber 22cd248341SJan Glauber void __iomem *pci_iomap(struct pci_dev *, int, unsigned long); 23cd248341SJan Glauber void pci_iounmap(struct pci_dev *, void __iomem *); 24cd248341SJan Glauber int pci_domain_nr(struct pci_bus *); 25cd248341SJan Glauber int pci_proc_domain(struct pci_bus *); 26cd248341SJan Glauber 27cd248341SJan Glauber #define ZPCI_BUS_NR 0 /* default bus number */ 28cd248341SJan Glauber #define ZPCI_DEVFN 0 /* default device number */ 29cd248341SJan Glauber 30cd248341SJan Glauber /* PCI Function Controls */ 31cd248341SJan Glauber #define ZPCI_FC_FN_ENABLED 0x80 32cd248341SJan Glauber #define ZPCI_FC_ERROR 0x40 33cd248341SJan Glauber #define ZPCI_FC_BLOCKED 0x20 34cd248341SJan Glauber #define ZPCI_FC_DMA_ENABLED 0x10 35cd248341SJan Glauber 36f9dc447eSSebastian Ott #define ZPCI_FMB_DMA_COUNTER_VALID (1 << 23) 37f9dc447eSSebastian Ott 38f9dc447eSSebastian Ott struct zpci_fmb_fmt0 { 39f9dc447eSSebastian Ott u64 dma_rbytes; 40f9dc447eSSebastian Ott u64 dma_wbytes; 41f9dc447eSSebastian Ott }; 42f9dc447eSSebastian Ott 43f9dc447eSSebastian Ott struct zpci_fmb_fmt1 { 44f9dc447eSSebastian Ott u64 rx_bytes; 45f9dc447eSSebastian Ott u64 rx_packets; 46f9dc447eSSebastian Ott u64 tx_bytes; 47f9dc447eSSebastian Ott u64 tx_packets; 48f9dc447eSSebastian Ott }; 49f9dc447eSSebastian Ott 50f9dc447eSSebastian Ott struct zpci_fmb_fmt2 { 51f9dc447eSSebastian Ott u64 consumed_work_units; 52f9dc447eSSebastian Ott u64 max_work_units; 53f9dc447eSSebastian Ott }; 54f9dc447eSSebastian Ott 55d0b08853SJan Glauber struct zpci_fmb { 56d0b08853SJan Glauber u32 format : 8; 57f9dc447eSSebastian Ott u32 fmt_ind : 24; 58d0b08853SJan Glauber u32 samples; 59d0b08853SJan Glauber u64 last_update; 60f9dc447eSSebastian Ott /* common counters */ 61d0b08853SJan Glauber u64 ld_ops; 62d0b08853SJan Glauber u64 st_ops; 63d0b08853SJan Glauber u64 stb_ops; 64d0b08853SJan Glauber u64 rpcit_ops; 65f9dc447eSSebastian Ott /* format specific counters */ 66f9dc447eSSebastian Ott union { 67f9dc447eSSebastian Ott struct zpci_fmb_fmt0 fmt0; 68f9dc447eSSebastian Ott struct zpci_fmb_fmt1 fmt1; 69f9dc447eSSebastian Ott struct zpci_fmb_fmt2 fmt2; 70f9dc447eSSebastian Ott }; 719d89d9e6SSebastian Ott } __packed __aligned(128); 72d0b08853SJan Glauber 73cd248341SJan Glauber enum zpci_state { 74783684f1SSebastian Ott ZPCI_FN_STATE_STANDBY = 0, 75783684f1SSebastian Ott ZPCI_FN_STATE_CONFIGURED = 1, 76783684f1SSebastian Ott ZPCI_FN_STATE_RESERVED = 2, 77783684f1SSebastian Ott ZPCI_FN_STATE_ONLINE = 3, 78cd248341SJan Glauber }; 79cd248341SJan Glauber 80cd248341SJan Glauber struct zpci_bar_struct { 817a572a3aSSebastian Ott struct resource *res; /* bus resource */ 82cd248341SJan Glauber u32 val; /* bar start & 3 flag bits */ 83cd248341SJan Glauber u16 map_idx; /* index into bar mapping array */ 847a572a3aSSebastian Ott u8 size; /* order 2 exponent */ 85cd248341SJan Glauber }; 86cd248341SJan Glauber 878128f23cSGerald Schaefer struct s390_domain; 888128f23cSGerald Schaefer 89cd248341SJan Glauber /* Private data per function */ 90cd248341SJan Glauber struct zpci_dev { 91cd248341SJan Glauber struct pci_bus *bus; 92cd248341SJan Glauber struct list_head entry; /* list of all zpci_devices, needed for hotplug, etc. */ 93cd248341SJan Glauber 94cd248341SJan Glauber enum zpci_state state; 95cd248341SJan Glauber u32 fid; /* function ID, used by sclp */ 96cd248341SJan Glauber u32 fh; /* function handle, used by insn's */ 97ac4995b9SSebastian Ott u16 vfn; /* virtual function number */ 98cd248341SJan Glauber u16 pchid; /* physical channel ID */ 99cd248341SJan Glauber u8 pfgid; /* function group ID */ 100ac4995b9SSebastian Ott u8 pft; /* pci function type */ 101cd248341SJan Glauber u16 domain; 102cd248341SJan Glauber 10380ed156aSSebastian Ott struct mutex lock; 104ac4995b9SSebastian Ott u8 pfip[CLP_PFIP_NR_SEGMENTS]; /* pci function internal path */ 105ac4995b9SSebastian Ott u32 uid; /* user defined id */ 106ac4995b9SSebastian Ott u8 util_str[CLP_UTIL_STR_LEN]; /* utility string */ 107ac4995b9SSebastian Ott 1089a4da8a5SJan Glauber /* IRQ stuff */ 1099a4da8a5SJan Glauber u64 msi_addr; /* MSI address */ 110b19148f6SSebastian Ott unsigned int max_msi; /* maximum number of MSI's */ 1115d0d8f43SMartin Schwidefsky struct airq_iv *aibv; /* adapter interrupt bit vector */ 112795818e8SSebastian Ott unsigned long aisb; /* number of the summary bit */ 1139a4da8a5SJan Glauber 114828b35f6SJan Glauber /* DMA stuff */ 115828b35f6SJan Glauber unsigned long *dma_table; 116828b35f6SJan Glauber spinlock_t dma_table_lock; 117828b35f6SJan Glauber int tlb_refresh; 118828b35f6SJan Glauber 119828b35f6SJan Glauber spinlock_t iommu_bitmap_lock; 120828b35f6SJan Glauber unsigned long *iommu_bitmap; 12113954fd6SSebastian Ott unsigned long *lazy_bitmap; 122828b35f6SJan Glauber unsigned long iommu_size; 123828b35f6SJan Glauber unsigned long iommu_pages; 124828b35f6SJan Glauber unsigned int next_bit; 125828b35f6SJan Glauber 126f42c2235SJoerg Roedel struct iommu_device iommu_dev; /* IOMMU core handle */ 127f42c2235SJoerg Roedel 1287a572a3aSSebastian Ott char res_name[16]; 129cd248341SJan Glauber struct zpci_bar_struct bars[PCI_BAR_COUNT]; 130cd248341SJan Glauber 131828b35f6SJan Glauber u64 start_dma; /* Start of available DMA addresses */ 132828b35f6SJan Glauber u64 end_dma; /* End of available DMA addresses */ 133828b35f6SJan Glauber u64 dma_mask; /* DMA address space mask */ 134828b35f6SJan Glauber 135d0b08853SJan Glauber /* Function measurement block */ 136d0b08853SJan Glauber struct zpci_fmb *fmb; 137d0b08853SJan Glauber u16 fmb_update; /* update interval */ 1380b7589ecSSebastian Ott u16 fmb_length; 1396001018aSSebastian Ott /* software counters */ 1406001018aSSebastian Ott atomic64_t allocated_pages; 1416001018aSSebastian Ott atomic64_t mapped_pages; 1426001018aSSebastian Ott atomic64_t unmapped_pages; 143d0b08853SJan Glauber 144cd248341SJan Glauber enum pci_bus_speed max_bus_speed; 145d0b08853SJan Glauber 146d0b08853SJan Glauber struct dentry *debugfs_dev; 147d0b08853SJan Glauber struct dentry *debugfs_perf; 1488128f23cSGerald Schaefer 1498128f23cSGerald Schaefer struct s390_domain *s390_domain; /* s390 IOMMU domain data */ 150cd248341SJan Glauber }; 151cd248341SJan Glauber 152cd248341SJan Glauber static inline bool zdev_enabled(struct zpci_dev *zdev) 153cd248341SJan Glauber { 154cd248341SJan Glauber return (zdev->fh & (1UL << 31)) ? true : false; 155cd248341SJan Glauber } 156cd248341SJan Glauber 15793065d04SSebastian Ott extern const struct attribute_group *zpci_attr_groups[]; 15893065d04SSebastian Ott 159cd248341SJan Glauber /* ----------------------------------------------------------------------------- 160cd248341SJan Glauber Prototypes 161cd248341SJan Glauber ----------------------------------------------------------------------------- */ 162cd248341SJan Glauber /* Base stuff */ 163cd248341SJan Glauber int zpci_create_device(struct zpci_dev *); 164623bd44dSSebastian Ott void zpci_remove_device(struct zpci_dev *zdev); 165cd248341SJan Glauber int zpci_enable_device(struct zpci_dev *); 166cb65a669SSebastian Ott int zpci_disable_device(struct zpci_dev *); 167828b35f6SJan Glauber int zpci_register_ioat(struct zpci_dev *, u8, u64, u64, u64); 168828b35f6SJan Glauber int zpci_unregister_ioat(struct zpci_dev *, u8); 16901553d9aSSebastian Ott void zpci_remove_reserved_devices(void); 170cd248341SJan Glauber 171a755a45dSJan Glauber /* CLP */ 1721d578966SSebastian Ott int clp_scan_pci_devices(void); 1731d578966SSebastian Ott int clp_rescan_pci_devices(void); 17457b5918cSSebastian Ott int clp_rescan_pci_devices_simple(void); 175a755a45dSJan Glauber int clp_add_pci_device(u32, u32, int); 176a755a45dSJan Glauber int clp_enable_fh(struct zpci_dev *, u8); 177a755a45dSJan Glauber int clp_disable_fh(struct zpci_dev *); 178783684f1SSebastian Ott int clp_get_state(u32 fid, enum zpci_state *state); 179a755a45dSJan Glauber 180f42c2235SJoerg Roedel /* IOMMU Interface */ 181f42c2235SJoerg Roedel int zpci_init_iommu(struct zpci_dev *zdev); 182f42c2235SJoerg Roedel void zpci_destroy_iommu(struct zpci_dev *zdev); 183f42c2235SJoerg Roedel 1849a17e972SSebastian Ott #ifdef CONFIG_PCI 185cbc0dd1fSJan Glauber /* Error handling and recovery */ 186cbc0dd1fSJan Glauber void zpci_event_error(void *); 187cbc0dd1fSJan Glauber void zpci_event_availability(void *); 18857b5918cSSebastian Ott void zpci_rescan(void); 189aa3b7c29SSebastian Ott bool zpci_is_enabled(void); 1909a17e972SSebastian Ott #else /* CONFIG_PCI */ 1919a17e972SSebastian Ott static inline void zpci_event_error(void *e) {} 1929a17e972SSebastian Ott static inline void zpci_event_availability(void *e) {} 19357b5918cSSebastian Ott static inline void zpci_rescan(void) {} 1949a17e972SSebastian Ott #endif /* CONFIG_PCI */ 195cbc0dd1fSJan Glauber 19667f43f38SSebastian Ott #ifdef CONFIG_HOTPLUG_PCI_S390 19767f43f38SSebastian Ott int zpci_init_slot(struct zpci_dev *); 19867f43f38SSebastian Ott void zpci_exit_slot(struct zpci_dev *); 19967f43f38SSebastian Ott #else /* CONFIG_HOTPLUG_PCI_S390 */ 20067f43f38SSebastian Ott static inline int zpci_init_slot(struct zpci_dev *zdev) 20167f43f38SSebastian Ott { 20267f43f38SSebastian Ott return 0; 20367f43f38SSebastian Ott } 20467f43f38SSebastian Ott static inline void zpci_exit_slot(struct zpci_dev *zdev) {} 20567f43f38SSebastian Ott #endif /* CONFIG_HOTPLUG_PCI_S390 */ 20667f43f38SSebastian Ott 207cd248341SJan Glauber /* Helpers */ 208198a5278SSebastian Ott static inline struct zpci_dev *to_zpci(struct pci_dev *pdev) 209198a5278SSebastian Ott { 210198a5278SSebastian Ott return pdev->sysdata; 211198a5278SSebastian Ott } 212198a5278SSebastian Ott 213cd248341SJan Glauber struct zpci_dev *get_zdev_by_fid(u32); 214cd248341SJan Glauber 215828b35f6SJan Glauber /* DMA */ 216828b35f6SJan Glauber int zpci_dma_init(void); 217828b35f6SJan Glauber void zpci_dma_exit(void); 218828b35f6SJan Glauber 219d0b08853SJan Glauber /* FMB */ 220d0b08853SJan Glauber int zpci_fmb_enable_device(struct zpci_dev *); 221d0b08853SJan Glauber int zpci_fmb_disable_device(struct zpci_dev *); 222d0b08853SJan Glauber 223d0b08853SJan Glauber /* Debug */ 224d0b08853SJan Glauber int zpci_debug_init(void); 225d0b08853SJan Glauber void zpci_debug_exit(void); 2269a99649fSSebastian Ott void zpci_debug_init_device(struct zpci_dev *, const char *); 227d0b08853SJan Glauber void zpci_debug_exit_device(struct zpci_dev *); 228d0b08853SJan Glauber void zpci_debug_info(struct zpci_dev *, struct seq_file *); 229d0b08853SJan Glauber 230bd3a1725SMartin Schwidefsky /* Error reporting */ 231bd3a1725SMartin Schwidefsky int zpci_report_error(struct pci_dev *, struct zpci_report_error_header *); 232bd3a1725SMartin Schwidefsky 2333a368f74SPhilipp Hachtmann #ifdef CONFIG_NUMA 2343a368f74SPhilipp Hachtmann 2353a368f74SPhilipp Hachtmann /* Returns the node based on PCI bus */ 2363a368f74SPhilipp Hachtmann static inline int __pcibus_to_node(const struct pci_bus *bus) 2373a368f74SPhilipp Hachtmann { 2383a368f74SPhilipp Hachtmann return NUMA_NO_NODE; 2393a368f74SPhilipp Hachtmann } 2403a368f74SPhilipp Hachtmann 2413a368f74SPhilipp Hachtmann static inline const struct cpumask * 2423a368f74SPhilipp Hachtmann cpumask_of_pcibus(const struct pci_bus *bus) 2433a368f74SPhilipp Hachtmann { 2443a368f74SPhilipp Hachtmann return cpu_online_mask; 2453a368f74SPhilipp Hachtmann } 2463a368f74SPhilipp Hachtmann 2473a368f74SPhilipp Hachtmann #endif /* CONFIG_NUMA */ 2483a368f74SPhilipp Hachtmann 249cd248341SJan Glauber #endif 250