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> 12c6557e7fSMartin Schwidefsky 13cd248341SJan Glauber #define PCIBIOS_MIN_IO 0x1000 14cd248341SJan Glauber #define PCIBIOS_MIN_MEM 0x10000000 15cd248341SJan Glauber 16cd248341SJan Glauber #define pcibios_assign_all_busses() (0) 17cd248341SJan Glauber 18cd248341SJan Glauber void __iomem *pci_iomap(struct pci_dev *, int, unsigned long); 19cd248341SJan Glauber void pci_iounmap(struct pci_dev *, void __iomem *); 20cd248341SJan Glauber int pci_domain_nr(struct pci_bus *); 21cd248341SJan Glauber int pci_proc_domain(struct pci_bus *); 22cd248341SJan Glauber 239a4da8a5SJan Glauber /* MSI arch hooks */ 249a4da8a5SJan Glauber #define arch_setup_msi_irqs arch_setup_msi_irqs 259a4da8a5SJan Glauber #define arch_teardown_msi_irqs arch_teardown_msi_irqs 269a4da8a5SJan 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 369a4da8a5SJan Glauber struct msi_map { 379a4da8a5SJan Glauber unsigned long irq; 389a4da8a5SJan Glauber struct msi_desc *msi; 399a4da8a5SJan Glauber struct hlist_node msi_chain; 409a4da8a5SJan Glauber }; 419a4da8a5SJan Glauber 429a4da8a5SJan Glauber #define ZPCI_NR_MSI_VECS 64 439a4da8a5SJan Glauber #define ZPCI_MSI_MASK (ZPCI_NR_MSI_VECS - 1) 449a4da8a5SJan Glauber 45cd248341SJan Glauber enum zpci_state { 46cd248341SJan Glauber ZPCI_FN_STATE_RESERVED, 47cd248341SJan Glauber ZPCI_FN_STATE_STANDBY, 48cd248341SJan Glauber ZPCI_FN_STATE_CONFIGURED, 49cd248341SJan Glauber ZPCI_FN_STATE_ONLINE, 50cd248341SJan Glauber NR_ZPCI_FN_STATES, 51cd248341SJan Glauber }; 52cd248341SJan Glauber 53cd248341SJan Glauber struct zpci_bar_struct { 54cd248341SJan Glauber u32 val; /* bar start & 3 flag bits */ 55cd248341SJan Glauber u8 size; /* order 2 exponent */ 56cd248341SJan Glauber u16 map_idx; /* index into bar mapping array */ 57cd248341SJan Glauber }; 58cd248341SJan Glauber 59cd248341SJan Glauber /* Private data per function */ 60cd248341SJan Glauber struct zpci_dev { 61cd248341SJan Glauber struct pci_dev *pdev; 62cd248341SJan Glauber struct pci_bus *bus; 63cd248341SJan Glauber struct list_head entry; /* list of all zpci_devices, needed for hotplug, etc. */ 64cd248341SJan Glauber 65cd248341SJan Glauber enum zpci_state state; 66cd248341SJan Glauber u32 fid; /* function ID, used by sclp */ 67cd248341SJan Glauber u32 fh; /* function handle, used by insn's */ 68cd248341SJan Glauber u16 pchid; /* physical channel ID */ 69cd248341SJan Glauber u8 pfgid; /* function group ID */ 70cd248341SJan Glauber u16 domain; 71cd248341SJan Glauber 729a4da8a5SJan Glauber /* IRQ stuff */ 739a4da8a5SJan Glauber u64 msi_addr; /* MSI address */ 749a4da8a5SJan Glauber struct zdev_irq_map *irq_map; 759a4da8a5SJan Glauber struct msi_map *msi_map[ZPCI_NR_MSI_VECS]; 769a4da8a5SJan Glauber unsigned int aisb; /* number of the summary bit */ 779a4da8a5SJan Glauber 78cd248341SJan Glauber struct zpci_bar_struct bars[PCI_BAR_COUNT]; 79cd248341SJan Glauber 80cd248341SJan Glauber enum pci_bus_speed max_bus_speed; 81cd248341SJan Glauber }; 82cd248341SJan Glauber 83cd248341SJan Glauber static inline bool zdev_enabled(struct zpci_dev *zdev) 84cd248341SJan Glauber { 85cd248341SJan Glauber return (zdev->fh & (1UL << 31)) ? true : false; 86cd248341SJan Glauber } 87cd248341SJan Glauber 88cd248341SJan Glauber /* ----------------------------------------------------------------------------- 89cd248341SJan Glauber Prototypes 90cd248341SJan Glauber ----------------------------------------------------------------------------- */ 91cd248341SJan Glauber /* Base stuff */ 92cd248341SJan Glauber struct zpci_dev *zpci_alloc_device(void); 93cd248341SJan Glauber int zpci_create_device(struct zpci_dev *); 94cd248341SJan Glauber int zpci_enable_device(struct zpci_dev *); 95cd248341SJan Glauber void zpci_stop_device(struct zpci_dev *); 96cd248341SJan Glauber void zpci_free_device(struct zpci_dev *); 97cd248341SJan Glauber int zpci_scan_device(struct zpci_dev *); 98cd248341SJan Glauber 99a755a45dSJan Glauber /* CLP */ 100a755a45dSJan Glauber int clp_find_pci_devices(void); 101a755a45dSJan Glauber int clp_add_pci_device(u32, u32, int); 102a755a45dSJan Glauber int clp_enable_fh(struct zpci_dev *, u8); 103a755a45dSJan Glauber int clp_disable_fh(struct zpci_dev *); 104a755a45dSJan Glauber 1059a4da8a5SJan Glauber /* MSI */ 1069a4da8a5SJan Glauber struct msi_desc *__irq_get_msi_desc(unsigned int); 1079a4da8a5SJan Glauber int zpci_msi_set_mask_bits(struct msi_desc *, u32, u32); 1089a4da8a5SJan Glauber int zpci_setup_msi_irq(struct zpci_dev *, struct msi_desc *, unsigned int, int); 1099a4da8a5SJan Glauber void zpci_teardown_msi_irq(struct zpci_dev *, struct msi_desc *); 1109a4da8a5SJan Glauber int zpci_msihash_init(void); 1119a4da8a5SJan Glauber void zpci_msihash_exit(void); 1129a4da8a5SJan Glauber 113cd248341SJan Glauber /* Helpers */ 114cd248341SJan Glauber struct zpci_dev *get_zdev(struct pci_dev *); 115cd248341SJan Glauber struct zpci_dev *get_zdev_by_fid(u32); 116cd248341SJan Glauber bool zpci_fid_present(u32); 117cd248341SJan Glauber 118cd248341SJan Glauber #endif 119