1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 2c6557e7fSMartin Schwidefsky #ifndef __ASM_S390_PCI_H 3c6557e7fSMartin Schwidefsky #define __ASM_S390_PCI_H 4c6557e7fSMartin Schwidefsky 5cd248341SJan Glauber /* must be set before including pci_clp.h */ 6cd248341SJan Glauber #define PCI_BAR_COUNT 6 7c6557e7fSMartin Schwidefsky 857b5918cSSebastian Ott #include <linux/pci.h> 980ed156aSSebastian Ott #include <linux/mutex.h> 10f42c2235SJoerg Roedel #include <linux/iommu.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 29c840927cSSebastian Ott #define ZPCI_NR_DMA_SPACES 1 30c840927cSSebastian Ott #define ZPCI_NR_DEVICES CONFIG_PCI_NR_FUNCTIONS 31c840927cSSebastian Ott 32cd248341SJan Glauber /* PCI Function Controls */ 33cd248341SJan Glauber #define ZPCI_FC_FN_ENABLED 0x80 34cd248341SJan Glauber #define ZPCI_FC_ERROR 0x40 35cd248341SJan Glauber #define ZPCI_FC_BLOCKED 0x20 36cd248341SJan Glauber #define ZPCI_FC_DMA_ENABLED 0x10 37cd248341SJan Glauber 38f9dc447eSSebastian Ott #define ZPCI_FMB_DMA_COUNTER_VALID (1 << 23) 39f9dc447eSSebastian Ott 40f9dc447eSSebastian Ott struct zpci_fmb_fmt0 { 41f9dc447eSSebastian Ott u64 dma_rbytes; 42f9dc447eSSebastian Ott u64 dma_wbytes; 43f9dc447eSSebastian Ott }; 44f9dc447eSSebastian Ott 45f9dc447eSSebastian Ott struct zpci_fmb_fmt1 { 46f9dc447eSSebastian Ott u64 rx_bytes; 47f9dc447eSSebastian Ott u64 rx_packets; 48f9dc447eSSebastian Ott u64 tx_bytes; 49f9dc447eSSebastian Ott u64 tx_packets; 50f9dc447eSSebastian Ott }; 51f9dc447eSSebastian Ott 52f9dc447eSSebastian Ott struct zpci_fmb_fmt2 { 53f9dc447eSSebastian Ott u64 consumed_work_units; 54f9dc447eSSebastian Ott u64 max_work_units; 55f9dc447eSSebastian Ott }; 56f9dc447eSSebastian Ott 570ac94282SSebastian Ott struct zpci_fmb_fmt3 { 580ac94282SSebastian Ott u64 tx_bytes; 590ac94282SSebastian Ott }; 600ac94282SSebastian Ott 61d0b08853SJan Glauber struct zpci_fmb { 62d0b08853SJan Glauber u32 format : 8; 63f9dc447eSSebastian Ott u32 fmt_ind : 24; 64d0b08853SJan Glauber u32 samples; 65d0b08853SJan Glauber u64 last_update; 66f9dc447eSSebastian Ott /* common counters */ 67d0b08853SJan Glauber u64 ld_ops; 68d0b08853SJan Glauber u64 st_ops; 69d0b08853SJan Glauber u64 stb_ops; 70d0b08853SJan Glauber u64 rpcit_ops; 71f9dc447eSSebastian Ott /* format specific counters */ 72f9dc447eSSebastian Ott union { 73f9dc447eSSebastian Ott struct zpci_fmb_fmt0 fmt0; 74f9dc447eSSebastian Ott struct zpci_fmb_fmt1 fmt1; 75f9dc447eSSebastian Ott struct zpci_fmb_fmt2 fmt2; 760ac94282SSebastian Ott struct zpci_fmb_fmt3 fmt3; 77f9dc447eSSebastian Ott }; 789d89d9e6SSebastian Ott } __packed __aligned(128); 79d0b08853SJan Glauber 80cd248341SJan Glauber enum zpci_state { 81783684f1SSebastian Ott ZPCI_FN_STATE_STANDBY = 0, 82783684f1SSebastian Ott ZPCI_FN_STATE_CONFIGURED = 1, 83783684f1SSebastian Ott ZPCI_FN_STATE_RESERVED = 2, 84783684f1SSebastian Ott ZPCI_FN_STATE_ONLINE = 3, 85cd248341SJan Glauber }; 86cd248341SJan Glauber 87cd248341SJan Glauber struct zpci_bar_struct { 887a572a3aSSebastian Ott struct resource *res; /* bus resource */ 89cd248341SJan Glauber u32 val; /* bar start & 3 flag bits */ 90cd248341SJan Glauber u16 map_idx; /* index into bar mapping array */ 917a572a3aSSebastian Ott u8 size; /* order 2 exponent */ 92cd248341SJan Glauber }; 93cd248341SJan Glauber 948128f23cSGerald Schaefer struct s390_domain; 958128f23cSGerald Schaefer 96cd248341SJan Glauber /* Private data per function */ 97cd248341SJan Glauber struct zpci_dev { 98cd248341SJan Glauber struct pci_bus *bus; 99cd248341SJan Glauber struct list_head entry; /* list of all zpci_devices, needed for hotplug, etc. */ 100cd248341SJan Glauber 101cd248341SJan Glauber enum zpci_state state; 102cd248341SJan Glauber u32 fid; /* function ID, used by sclp */ 103cd248341SJan Glauber u32 fh; /* function handle, used by insn's */ 104ac4995b9SSebastian Ott u16 vfn; /* virtual function number */ 105cd248341SJan Glauber u16 pchid; /* physical channel ID */ 106cd248341SJan Glauber u8 pfgid; /* function group ID */ 107ac4995b9SSebastian Ott u8 pft; /* pci function type */ 108cd248341SJan Glauber u16 domain; 109cd248341SJan Glauber 11080ed156aSSebastian Ott struct mutex lock; 111ac4995b9SSebastian Ott u8 pfip[CLP_PFIP_NR_SEGMENTS]; /* pci function internal path */ 112ac4995b9SSebastian Ott u32 uid; /* user defined id */ 113ac4995b9SSebastian Ott u8 util_str[CLP_UTIL_STR_LEN]; /* utility string */ 114ac4995b9SSebastian Ott 1159a4da8a5SJan Glauber /* IRQ stuff */ 1169a4da8a5SJan Glauber u64 msi_addr; /* MSI address */ 117b19148f6SSebastian Ott unsigned int max_msi; /* maximum number of MSI's */ 118e979ce7bSSebastian Ott unsigned int msi_first_bit; 119e979ce7bSSebastian Ott unsigned int msi_nr_irqs; 1205d0d8f43SMartin Schwidefsky struct airq_iv *aibv; /* adapter interrupt bit vector */ 121795818e8SSebastian Ott unsigned long aisb; /* number of the summary bit */ 1229a4da8a5SJan Glauber 123828b35f6SJan Glauber /* DMA stuff */ 124828b35f6SJan Glauber unsigned long *dma_table; 125828b35f6SJan Glauber spinlock_t dma_table_lock; 126828b35f6SJan Glauber int tlb_refresh; 127828b35f6SJan Glauber 128828b35f6SJan Glauber spinlock_t iommu_bitmap_lock; 129828b35f6SJan Glauber unsigned long *iommu_bitmap; 13013954fd6SSebastian Ott unsigned long *lazy_bitmap; 131828b35f6SJan Glauber unsigned long iommu_size; 132828b35f6SJan Glauber unsigned long iommu_pages; 133828b35f6SJan Glauber unsigned int next_bit; 134828b35f6SJan Glauber 135f42c2235SJoerg Roedel struct iommu_device iommu_dev; /* IOMMU core handle */ 136f42c2235SJoerg Roedel 1377a572a3aSSebastian Ott char res_name[16]; 138cd248341SJan Glauber struct zpci_bar_struct bars[PCI_BAR_COUNT]; 139cd248341SJan Glauber 140828b35f6SJan Glauber u64 start_dma; /* Start of available DMA addresses */ 141828b35f6SJan Glauber u64 end_dma; /* End of available DMA addresses */ 142828b35f6SJan Glauber u64 dma_mask; /* DMA address space mask */ 143828b35f6SJan Glauber 144d0b08853SJan Glauber /* Function measurement block */ 145d0b08853SJan Glauber struct zpci_fmb *fmb; 146d0b08853SJan Glauber u16 fmb_update; /* update interval */ 1470b7589ecSSebastian Ott u16 fmb_length; 1486001018aSSebastian Ott /* software counters */ 1496001018aSSebastian Ott atomic64_t allocated_pages; 1506001018aSSebastian Ott atomic64_t mapped_pages; 1516001018aSSebastian Ott atomic64_t unmapped_pages; 152d0b08853SJan Glauber 153cd248341SJan Glauber enum pci_bus_speed max_bus_speed; 154d0b08853SJan Glauber 155d0b08853SJan Glauber struct dentry *debugfs_dev; 1568128f23cSGerald Schaefer 1578128f23cSGerald Schaefer struct s390_domain *s390_domain; /* s390 IOMMU domain data */ 158cd248341SJan Glauber }; 159cd248341SJan Glauber 160cd248341SJan Glauber static inline bool zdev_enabled(struct zpci_dev *zdev) 161cd248341SJan Glauber { 162cd248341SJan Glauber return (zdev->fh & (1UL << 31)) ? true : false; 163cd248341SJan Glauber } 164cd248341SJan Glauber 16593065d04SSebastian Ott extern const struct attribute_group *zpci_attr_groups[]; 16693065d04SSebastian Ott 167cd248341SJan Glauber /* ----------------------------------------------------------------------------- 168cd248341SJan Glauber Prototypes 169cd248341SJan Glauber ----------------------------------------------------------------------------- */ 170cd248341SJan Glauber /* Base stuff */ 171cd248341SJan Glauber int zpci_create_device(struct zpci_dev *); 172623bd44dSSebastian Ott void zpci_remove_device(struct zpci_dev *zdev); 173cd248341SJan Glauber int zpci_enable_device(struct zpci_dev *); 174cb65a669SSebastian Ott int zpci_disable_device(struct zpci_dev *); 175828b35f6SJan Glauber int zpci_register_ioat(struct zpci_dev *, u8, u64, u64, u64); 176828b35f6SJan Glauber int zpci_unregister_ioat(struct zpci_dev *, u8); 17701553d9aSSebastian Ott void zpci_remove_reserved_devices(void); 178cd248341SJan Glauber 179a755a45dSJan Glauber /* CLP */ 1801d578966SSebastian Ott int clp_scan_pci_devices(void); 1811d578966SSebastian Ott int clp_rescan_pci_devices(void); 18257b5918cSSebastian Ott int clp_rescan_pci_devices_simple(void); 183a755a45dSJan Glauber int clp_add_pci_device(u32, u32, int); 184a755a45dSJan Glauber int clp_enable_fh(struct zpci_dev *, u8); 185a755a45dSJan Glauber int clp_disable_fh(struct zpci_dev *); 186783684f1SSebastian Ott int clp_get_state(u32 fid, enum zpci_state *state); 187a755a45dSJan Glauber 188f42c2235SJoerg Roedel /* IOMMU Interface */ 189f42c2235SJoerg Roedel int zpci_init_iommu(struct zpci_dev *zdev); 190f42c2235SJoerg Roedel void zpci_destroy_iommu(struct zpci_dev *zdev); 191f42c2235SJoerg Roedel 1929a17e972SSebastian Ott #ifdef CONFIG_PCI 193cbc0dd1fSJan Glauber /* Error handling and recovery */ 194cbc0dd1fSJan Glauber void zpci_event_error(void *); 195cbc0dd1fSJan Glauber void zpci_event_availability(void *); 19657b5918cSSebastian Ott void zpci_rescan(void); 197aa3b7c29SSebastian Ott bool zpci_is_enabled(void); 1989a17e972SSebastian Ott #else /* CONFIG_PCI */ 1999a17e972SSebastian Ott static inline void zpci_event_error(void *e) {} 2009a17e972SSebastian Ott static inline void zpci_event_availability(void *e) {} 20157b5918cSSebastian Ott static inline void zpci_rescan(void) {} 2029a17e972SSebastian Ott #endif /* CONFIG_PCI */ 203cbc0dd1fSJan Glauber 20467f43f38SSebastian Ott #ifdef CONFIG_HOTPLUG_PCI_S390 20567f43f38SSebastian Ott int zpci_init_slot(struct zpci_dev *); 20667f43f38SSebastian Ott void zpci_exit_slot(struct zpci_dev *); 20767f43f38SSebastian Ott #else /* CONFIG_HOTPLUG_PCI_S390 */ 20867f43f38SSebastian Ott static inline int zpci_init_slot(struct zpci_dev *zdev) 20967f43f38SSebastian Ott { 21067f43f38SSebastian Ott return 0; 21167f43f38SSebastian Ott } 21267f43f38SSebastian Ott static inline void zpci_exit_slot(struct zpci_dev *zdev) {} 21367f43f38SSebastian Ott #endif /* CONFIG_HOTPLUG_PCI_S390 */ 21467f43f38SSebastian Ott 215cd248341SJan Glauber /* Helpers */ 216198a5278SSebastian Ott static inline struct zpci_dev *to_zpci(struct pci_dev *pdev) 217198a5278SSebastian Ott { 218198a5278SSebastian Ott return pdev->sysdata; 219198a5278SSebastian Ott } 220198a5278SSebastian Ott 221cd248341SJan Glauber struct zpci_dev *get_zdev_by_fid(u32); 222cd248341SJan Glauber 223828b35f6SJan Glauber /* DMA */ 224828b35f6SJan Glauber int zpci_dma_init(void); 225828b35f6SJan Glauber void zpci_dma_exit(void); 226828b35f6SJan Glauber 227c840927cSSebastian Ott int __init zpci_irq_init(void); 228c840927cSSebastian Ott void __init zpci_irq_exit(void); 229c840927cSSebastian Ott 230d0b08853SJan Glauber /* FMB */ 231d0b08853SJan Glauber int zpci_fmb_enable_device(struct zpci_dev *); 232d0b08853SJan Glauber int zpci_fmb_disable_device(struct zpci_dev *); 233d0b08853SJan Glauber 234d0b08853SJan Glauber /* Debug */ 235d0b08853SJan Glauber int zpci_debug_init(void); 236d0b08853SJan Glauber void zpci_debug_exit(void); 2379a99649fSSebastian Ott void zpci_debug_init_device(struct zpci_dev *, const char *); 238d0b08853SJan Glauber void zpci_debug_exit_device(struct zpci_dev *); 239d0b08853SJan Glauber void zpci_debug_info(struct zpci_dev *, struct seq_file *); 240d0b08853SJan Glauber 241bd3a1725SMartin Schwidefsky /* Error reporting */ 242bd3a1725SMartin Schwidefsky int zpci_report_error(struct pci_dev *, struct zpci_report_error_header *); 243bd3a1725SMartin Schwidefsky 2443a368f74SPhilipp Hachtmann #ifdef CONFIG_NUMA 2453a368f74SPhilipp Hachtmann 2463a368f74SPhilipp Hachtmann /* Returns the node based on PCI bus */ 2473a368f74SPhilipp Hachtmann static inline int __pcibus_to_node(const struct pci_bus *bus) 2483a368f74SPhilipp Hachtmann { 2493a368f74SPhilipp Hachtmann return NUMA_NO_NODE; 2503a368f74SPhilipp Hachtmann } 2513a368f74SPhilipp Hachtmann 2523a368f74SPhilipp Hachtmann static inline const struct cpumask * 2533a368f74SPhilipp Hachtmann cpumask_of_pcibus(const struct pci_bus *bus) 2543a368f74SPhilipp Hachtmann { 2553a368f74SPhilipp Hachtmann return cpu_online_mask; 2563a368f74SPhilipp Hachtmann } 2573a368f74SPhilipp Hachtmann 2583a368f74SPhilipp Hachtmann #endif /* CONFIG_NUMA */ 2593a368f74SPhilipp Hachtmann 260cd248341SJan Glauber #endif 261