1 #ifndef __ASM_S390_PCI_H
2 #define __ASM_S390_PCI_H
4 /* must be set before including asm-generic/pci.h */
5 #define PCI_DMA_BUS_IS_PHYS (0)
6 /* must be set before including pci_clp.h */
7 #define PCI_BAR_COUNT 6
9 #include <asm-generic/pci.h>
10 #include <asm-generic/pci-dma-compat.h>
11 #include <asm/pci_clp.h>
13 #define PCIBIOS_MIN_IO 0x1000
14 #define PCIBIOS_MIN_MEM 0x10000000
16 #define pcibios_assign_all_busses() (0)
18 void __iomem *pci_iomap(struct pci_dev *, int, unsigned long);
19 void pci_iounmap(struct pci_dev *, void __iomem *);
20 int pci_domain_nr(struct pci_bus *);
21 int pci_proc_domain(struct pci_bus *);
24 #define arch_setup_msi_irqs arch_setup_msi_irqs
25 #define arch_teardown_msi_irqs arch_teardown_msi_irqs
27 #define ZPCI_BUS_NR 0 /* default bus number */
28 #define ZPCI_DEVFN 0 /* default device number */
30 /* PCI Function Controls */
31 #define ZPCI_FC_FN_ENABLED 0x80
32 #define ZPCI_FC_ERROR 0x40
33 #define ZPCI_FC_BLOCKED 0x20
34 #define ZPCI_FC_DMA_ENABLED 0x10
39 struct hlist_node msi_chain;
42 #define ZPCI_NR_MSI_VECS 64
43 #define ZPCI_MSI_MASK (ZPCI_NR_MSI_VECS - 1)
46 ZPCI_FN_STATE_RESERVED,
47 ZPCI_FN_STATE_STANDBY,
48 ZPCI_FN_STATE_CONFIGURED,
53 struct zpci_bar_struct {
54 u32 val; /* bar start & 3 flag bits */
55 u8 size; /* order 2 exponent */
56 u16 map_idx; /* index into bar mapping array */
59 /* Private data per function */
63 struct list_head entry; /* list of all zpci_devices, needed for hotplug, etc. */
65 enum zpci_state state;
66 u32 fid; /* function ID, used by sclp */
67 u32 fh; /* function handle, used by insn's */
68 u16 pchid; /* physical channel ID */
69 u8 pfgid; /* function group ID */
73 u64 msi_addr; /* MSI address */
74 struct zdev_irq_map *irq_map;
75 struct msi_map *msi_map[ZPCI_NR_MSI_VECS];
76 unsigned int aisb; /* number of the summary bit */
79 unsigned long *dma_table;
80 spinlock_t dma_table_lock;
83 spinlock_t iommu_bitmap_lock;
84 unsigned long *iommu_bitmap;
85 unsigned long iommu_size;
86 unsigned long iommu_pages;
87 unsigned int next_bit;
89 struct zpci_bar_struct bars[PCI_BAR_COUNT];
91 u64 start_dma; /* Start of available DMA addresses */
92 u64 end_dma; /* End of available DMA addresses */
93 u64 dma_mask; /* DMA address space mask */
95 enum pci_bus_speed max_bus_speed;
98 struct pci_hp_callback_ops {
99 int (*create_slot) (struct zpci_dev *zdev);
100 void (*remove_slot) (struct zpci_dev *zdev);
103 static inline bool zdev_enabled(struct zpci_dev *zdev)
105 return (zdev->fh & (1UL << 31)) ? true : false;
108 /* -----------------------------------------------------------------------------
110 ----------------------------------------------------------------------------- */
112 struct zpci_dev *zpci_alloc_device(void);
113 int zpci_create_device(struct zpci_dev *);
114 int zpci_enable_device(struct zpci_dev *);
115 void zpci_stop_device(struct zpci_dev *);
116 void zpci_free_device(struct zpci_dev *);
117 int zpci_scan_device(struct zpci_dev *);
118 int zpci_register_ioat(struct zpci_dev *, u8, u64, u64, u64);
119 int zpci_unregister_ioat(struct zpci_dev *, u8);
122 int clp_find_pci_devices(void);
123 int clp_add_pci_device(u32, u32, int);
124 int clp_enable_fh(struct zpci_dev *, u8);
125 int clp_disable_fh(struct zpci_dev *);
128 struct msi_desc *__irq_get_msi_desc(unsigned int);
129 int zpci_msi_set_mask_bits(struct msi_desc *, u32, u32);
130 int zpci_setup_msi_irq(struct zpci_dev *, struct msi_desc *, unsigned int, int);
131 void zpci_teardown_msi_irq(struct zpci_dev *, struct msi_desc *);
132 int zpci_msihash_init(void);
133 void zpci_msihash_exit(void);
135 /* Error handling and recovery */
136 void zpci_event_error(void *);
137 void zpci_event_availability(void *);
140 struct zpci_dev *get_zdev(struct pci_dev *);
141 struct zpci_dev *get_zdev_by_fid(u32);
142 bool zpci_fid_present(u32);
145 int zpci_sysfs_add_device(struct device *);
146 void zpci_sysfs_remove_device(struct device *);
149 int zpci_dma_init(void);
150 void zpci_dma_exit(void);
153 extern struct mutex zpci_list_lock;
154 extern struct list_head zpci_list;
155 extern struct pci_hp_callback_ops hotplug_ops;
156 extern unsigned int pci_probe;