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 9cd248341SJan Glauber #include <asm-generic/pci.h> 10cd248341SJan Glauber #include <asm-generic/pci-dma-compat.h> 11a755a45dSJan Glauber #include <asm/pci_clp.h> 12d0b08853SJan Glauber #include <asm/pci_debug.h> 13c6557e7fSMartin Schwidefsky 14cd248341SJan Glauber #define PCIBIOS_MIN_IO 0x1000 15cd248341SJan Glauber #define PCIBIOS_MIN_MEM 0x10000000 16cd248341SJan Glauber 17cd248341SJan Glauber #define pcibios_assign_all_busses() (0) 18cd248341SJan Glauber 19cd248341SJan Glauber void __iomem *pci_iomap(struct pci_dev *, int, unsigned long); 20cd248341SJan Glauber void pci_iounmap(struct pci_dev *, void __iomem *); 21cd248341SJan Glauber int pci_domain_nr(struct pci_bus *); 22cd248341SJan Glauber int pci_proc_domain(struct pci_bus *); 23cd248341SJan Glauber 249a4da8a5SJan Glauber /* MSI arch hooks */ 259a4da8a5SJan Glauber #define arch_setup_msi_irqs arch_setup_msi_irqs 269a4da8a5SJan Glauber #define arch_teardown_msi_irqs arch_teardown_msi_irqs 279a4da8a5SJan Glauber 28cd248341SJan Glauber #define ZPCI_BUS_NR 0 /* default bus number */ 29cd248341SJan Glauber #define ZPCI_DEVFN 0 /* default device number */ 30cd248341SJan Glauber 31cd248341SJan Glauber /* PCI Function Controls */ 32cd248341SJan Glauber #define ZPCI_FC_FN_ENABLED 0x80 33cd248341SJan Glauber #define ZPCI_FC_ERROR 0x40 34cd248341SJan Glauber #define ZPCI_FC_BLOCKED 0x20 35cd248341SJan Glauber #define ZPCI_FC_DMA_ENABLED 0x10 36cd248341SJan Glauber 37d0b08853SJan Glauber struct zpci_fmb { 38d0b08853SJan Glauber u32 format : 8; 39d0b08853SJan Glauber u32 dma_valid : 1; 40d0b08853SJan Glauber u32 : 23; 41d0b08853SJan Glauber u32 samples; 42d0b08853SJan Glauber u64 last_update; 43d0b08853SJan Glauber /* hardware counters */ 44d0b08853SJan Glauber u64 ld_ops; 45d0b08853SJan Glauber u64 st_ops; 46d0b08853SJan Glauber u64 stb_ops; 47d0b08853SJan Glauber u64 rpcit_ops; 48d0b08853SJan Glauber u64 dma_rbytes; 49d0b08853SJan Glauber u64 dma_wbytes; 50d0b08853SJan Glauber /* software counters */ 51d0b08853SJan Glauber atomic64_t allocated_pages; 52d0b08853SJan Glauber atomic64_t mapped_pages; 53d0b08853SJan Glauber atomic64_t unmapped_pages; 54d0b08853SJan Glauber } __packed __aligned(16); 55d0b08853SJan Glauber 565d0d8f43SMartin Schwidefsky #define ZPCI_MSI_VEC_BITS 11 575d0d8f43SMartin Schwidefsky #define ZPCI_MSI_VEC_MAX (1 << ZPCI_MSI_VEC_BITS) 585d0d8f43SMartin Schwidefsky #define ZPCI_MSI_VEC_MASK (ZPCI_MSI_VEC_MAX - 1) 599a4da8a5SJan Glauber 60cd248341SJan Glauber enum zpci_state { 61cd248341SJan Glauber ZPCI_FN_STATE_RESERVED, 62cd248341SJan Glauber ZPCI_FN_STATE_STANDBY, 63cd248341SJan Glauber ZPCI_FN_STATE_CONFIGURED, 64cd248341SJan Glauber ZPCI_FN_STATE_ONLINE, 65cd248341SJan Glauber NR_ZPCI_FN_STATES, 66cd248341SJan Glauber }; 67cd248341SJan Glauber 68cd248341SJan Glauber struct zpci_bar_struct { 69cd248341SJan Glauber u32 val; /* bar start & 3 flag bits */ 70cd248341SJan Glauber u8 size; /* order 2 exponent */ 71cd248341SJan Glauber u16 map_idx; /* index into bar mapping array */ 72cd248341SJan Glauber }; 73cd248341SJan Glauber 74cd248341SJan Glauber /* Private data per function */ 75cd248341SJan Glauber struct zpci_dev { 76cd248341SJan Glauber struct pci_dev *pdev; 77cd248341SJan Glauber struct pci_bus *bus; 78cd248341SJan Glauber struct list_head entry; /* list of all zpci_devices, needed for hotplug, etc. */ 79cd248341SJan Glauber 80cd248341SJan Glauber enum zpci_state state; 81cd248341SJan Glauber u32 fid; /* function ID, used by sclp */ 82cd248341SJan Glauber u32 fh; /* function handle, used by insn's */ 83cd248341SJan Glauber u16 pchid; /* physical channel ID */ 84cd248341SJan Glauber u8 pfgid; /* function group ID */ 85cd248341SJan Glauber u16 domain; 86cd248341SJan Glauber 879a4da8a5SJan Glauber /* IRQ stuff */ 889a4da8a5SJan Glauber u64 msi_addr; /* MSI address */ 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 103cd248341SJan Glauber struct zpci_bar_struct bars[PCI_BAR_COUNT]; 104cd248341SJan Glauber 105828b35f6SJan Glauber u64 start_dma; /* Start of available DMA addresses */ 106828b35f6SJan Glauber u64 end_dma; /* End of available DMA addresses */ 107828b35f6SJan Glauber u64 dma_mask; /* DMA address space mask */ 108828b35f6SJan Glauber 109d0b08853SJan Glauber /* Function measurement block */ 110d0b08853SJan Glauber struct zpci_fmb *fmb; 111d0b08853SJan Glauber u16 fmb_update; /* update interval */ 112d0b08853SJan Glauber 113cd248341SJan Glauber enum pci_bus_speed max_bus_speed; 114d0b08853SJan Glauber 115d0b08853SJan Glauber struct dentry *debugfs_dev; 116d0b08853SJan Glauber struct dentry *debugfs_perf; 117cd248341SJan Glauber }; 118cd248341SJan Glauber 119cd248341SJan Glauber static inline bool zdev_enabled(struct zpci_dev *zdev) 120cd248341SJan Glauber { 121cd248341SJan Glauber return (zdev->fh & (1UL << 31)) ? true : false; 122cd248341SJan Glauber } 123cd248341SJan Glauber 124cd248341SJan Glauber /* ----------------------------------------------------------------------------- 125cd248341SJan Glauber Prototypes 126cd248341SJan Glauber ----------------------------------------------------------------------------- */ 127cd248341SJan Glauber /* Base stuff */ 128cd248341SJan Glauber struct zpci_dev *zpci_alloc_device(void); 129cd248341SJan Glauber int zpci_create_device(struct zpci_dev *); 130cd248341SJan Glauber int zpci_enable_device(struct zpci_dev *); 131cb65a669SSebastian Ott int zpci_disable_device(struct zpci_dev *); 132cd248341SJan Glauber void zpci_stop_device(struct zpci_dev *); 133cd248341SJan Glauber void zpci_free_device(struct zpci_dev *); 134828b35f6SJan Glauber int zpci_register_ioat(struct zpci_dev *, u8, u64, u64, u64); 135828b35f6SJan Glauber int zpci_unregister_ioat(struct zpci_dev *, u8); 136cd248341SJan Glauber 137a755a45dSJan Glauber /* CLP */ 1381d578966SSebastian Ott int clp_scan_pci_devices(void); 1391d578966SSebastian Ott int clp_rescan_pci_devices(void); 140a755a45dSJan Glauber int clp_add_pci_device(u32, u32, int); 141a755a45dSJan Glauber int clp_enable_fh(struct zpci_dev *, u8); 142a755a45dSJan Glauber int clp_disable_fh(struct zpci_dev *); 143a755a45dSJan Glauber 1449a17e972SSebastian Ott #ifdef CONFIG_PCI 145cbc0dd1fSJan Glauber /* Error handling and recovery */ 146cbc0dd1fSJan Glauber void zpci_event_error(void *); 147cbc0dd1fSJan Glauber void zpci_event_availability(void *); 1489a17e972SSebastian Ott #else /* CONFIG_PCI */ 1499a17e972SSebastian Ott static inline void zpci_event_error(void *e) {} 1509a17e972SSebastian Ott static inline void zpci_event_availability(void *e) {} 1519a17e972SSebastian Ott #endif /* CONFIG_PCI */ 152cbc0dd1fSJan Glauber 15367f43f38SSebastian Ott #ifdef CONFIG_HOTPLUG_PCI_S390 15467f43f38SSebastian Ott int zpci_init_slot(struct zpci_dev *); 15567f43f38SSebastian Ott void zpci_exit_slot(struct zpci_dev *); 15667f43f38SSebastian Ott #else /* CONFIG_HOTPLUG_PCI_S390 */ 15767f43f38SSebastian Ott static inline int zpci_init_slot(struct zpci_dev *zdev) 15867f43f38SSebastian Ott { 15967f43f38SSebastian Ott return 0; 16067f43f38SSebastian Ott } 16167f43f38SSebastian Ott static inline void zpci_exit_slot(struct zpci_dev *zdev) {} 16267f43f38SSebastian Ott #endif /* CONFIG_HOTPLUG_PCI_S390 */ 16367f43f38SSebastian Ott 164cd248341SJan Glauber /* Helpers */ 165cd248341SJan Glauber struct zpci_dev *get_zdev(struct pci_dev *); 166cd248341SJan Glauber struct zpci_dev *get_zdev_by_fid(u32); 167cd248341SJan Glauber 1681e8da956SJan Glauber /* sysfs */ 1691e8da956SJan Glauber int zpci_sysfs_add_device(struct device *); 1701e8da956SJan Glauber void zpci_sysfs_remove_device(struct device *); 1711e8da956SJan Glauber 172828b35f6SJan Glauber /* DMA */ 173828b35f6SJan Glauber int zpci_dma_init(void); 174828b35f6SJan Glauber void zpci_dma_exit(void); 175828b35f6SJan Glauber 176d0b08853SJan Glauber /* FMB */ 177d0b08853SJan Glauber int zpci_fmb_enable_device(struct zpci_dev *); 178d0b08853SJan Glauber int zpci_fmb_disable_device(struct zpci_dev *); 179d0b08853SJan Glauber 180d0b08853SJan Glauber /* Debug */ 181d0b08853SJan Glauber int zpci_debug_init(void); 182d0b08853SJan Glauber void zpci_debug_exit(void); 183d0b08853SJan Glauber void zpci_debug_init_device(struct zpci_dev *); 184d0b08853SJan Glauber void zpci_debug_exit_device(struct zpci_dev *); 185d0b08853SJan Glauber void zpci_debug_info(struct zpci_dev *, struct seq_file *); 186d0b08853SJan Glauber 187cd248341SJan Glauber #endif 188