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
10 #include <asm-generic/pci.h>
11 #include <asm-generic/pci-dma-compat.h>
12 #include <asm/pci_clp.h>
13 #include <asm/pci_debug.h>
15 #define PCIBIOS_MIN_IO 0x1000
16 #define PCIBIOS_MIN_MEM 0x10000000
18 #define pcibios_assign_all_busses() (0)
20 void __iomem *pci_iomap(struct pci_dev *, int, unsigned long);
21 void pci_iounmap(struct pci_dev *, void __iomem *);
22 int pci_domain_nr(struct pci_bus *);
23 int pci_proc_domain(struct pci_bus *);
25 #define ZPCI_BUS_NR 0 /* default bus number */
26 #define ZPCI_DEVFN 0 /* default device number */
28 /* PCI Function Controls */
29 #define ZPCI_FC_FN_ENABLED 0x80
30 #define ZPCI_FC_ERROR 0x40
31 #define ZPCI_FC_BLOCKED 0x20
32 #define ZPCI_FC_DMA_ENABLED 0x10
40 /* hardware counters */
47 /* software counters */
48 atomic64_t allocated_pages;
49 atomic64_t mapped_pages;
50 atomic64_t unmapped_pages;
51 } __packed __aligned(16);
54 ZPCI_FN_STATE_RESERVED,
55 ZPCI_FN_STATE_STANDBY,
56 ZPCI_FN_STATE_CONFIGURED,
61 struct zpci_bar_struct {
62 struct resource *res; /* bus resource */
63 u32 val; /* bar start & 3 flag bits */
64 u16 map_idx; /* index into bar mapping array */
65 u8 size; /* order 2 exponent */
68 /* Private data per function */
72 struct list_head entry; /* list of all zpci_devices, needed for hotplug, etc. */
74 enum zpci_state state;
75 u32 fid; /* function ID, used by sclp */
76 u32 fh; /* function handle, used by insn's */
77 u16 vfn; /* virtual function number */
78 u16 pchid; /* physical channel ID */
79 u8 pfgid; /* function group ID */
80 u8 pft; /* pci function type */
83 u8 pfip[CLP_PFIP_NR_SEGMENTS]; /* pci function internal path */
84 u32 uid; /* user defined id */
85 u8 util_str[CLP_UTIL_STR_LEN]; /* utility string */
88 u64 msi_addr; /* MSI address */
89 unsigned int max_msi; /* maximum number of MSI's */
90 struct airq_iv *aibv; /* adapter interrupt bit vector */
91 unsigned int aisb; /* number of the summary bit */
94 unsigned long *dma_table;
95 spinlock_t dma_table_lock;
98 spinlock_t iommu_bitmap_lock;
99 unsigned long *iommu_bitmap;
100 unsigned long iommu_size;
101 unsigned long iommu_pages;
102 unsigned int next_bit;
105 struct zpci_bar_struct bars[PCI_BAR_COUNT];
107 u64 start_dma; /* Start of available DMA addresses */
108 u64 end_dma; /* End of available DMA addresses */
109 u64 dma_mask; /* DMA address space mask */
111 /* Function measurement block */
112 struct zpci_fmb *fmb;
113 u16 fmb_update; /* update interval */
115 enum pci_bus_speed max_bus_speed;
117 struct dentry *debugfs_dev;
118 struct dentry *debugfs_perf;
121 static inline bool zdev_enabled(struct zpci_dev *zdev)
123 return (zdev->fh & (1UL << 31)) ? true : false;
126 extern const struct attribute_group *zpci_attr_groups[];
128 /* -----------------------------------------------------------------------------
130 ----------------------------------------------------------------------------- */
132 int zpci_create_device(struct zpci_dev *);
133 int zpci_enable_device(struct zpci_dev *);
134 int zpci_disable_device(struct zpci_dev *);
135 void zpci_stop_device(struct zpci_dev *);
136 int zpci_register_ioat(struct zpci_dev *, u8, u64, u64, u64);
137 int zpci_unregister_ioat(struct zpci_dev *, u8);
140 int clp_scan_pci_devices(void);
141 int clp_rescan_pci_devices(void);
142 int clp_rescan_pci_devices_simple(void);
143 int clp_add_pci_device(u32, u32, int);
144 int clp_enable_fh(struct zpci_dev *, u8);
145 int clp_disable_fh(struct zpci_dev *);
148 /* Error handling and recovery */
149 void zpci_event_error(void *);
150 void zpci_event_availability(void *);
151 void zpci_rescan(void);
152 bool zpci_is_enabled(void);
153 #else /* CONFIG_PCI */
154 static inline void zpci_event_error(void *e) {}
155 static inline void zpci_event_availability(void *e) {}
156 static inline void zpci_rescan(void) {}
157 #endif /* CONFIG_PCI */
159 #ifdef CONFIG_HOTPLUG_PCI_S390
160 int zpci_init_slot(struct zpci_dev *);
161 void zpci_exit_slot(struct zpci_dev *);
162 #else /* CONFIG_HOTPLUG_PCI_S390 */
163 static inline int zpci_init_slot(struct zpci_dev *zdev)
167 static inline void zpci_exit_slot(struct zpci_dev *zdev) {}
168 #endif /* CONFIG_HOTPLUG_PCI_S390 */
171 struct zpci_dev *get_zdev(struct pci_dev *);
172 struct zpci_dev *get_zdev_by_fid(u32);
175 int zpci_dma_init(void);
176 void zpci_dma_exit(void);
179 int zpci_fmb_enable_device(struct zpci_dev *);
180 int zpci_fmb_disable_device(struct zpci_dev *);
183 int zpci_debug_init(void);
184 void zpci_debug_exit(void);
185 void zpci_debug_init_device(struct zpci_dev *);
186 void zpci_debug_exit_device(struct zpci_dev *);
187 void zpci_debug_info(struct zpci_dev *, struct seq_file *);