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>
12 #include <asm/pci_debug.h>
14 #define PCIBIOS_MIN_IO 0x1000
15 #define PCIBIOS_MIN_MEM 0x10000000
17 #define pcibios_assign_all_busses() (0)
19 void __iomem *pci_iomap(struct pci_dev *, int, unsigned long);
20 void pci_iounmap(struct pci_dev *, void __iomem *);
21 int pci_domain_nr(struct pci_bus *);
22 int pci_proc_domain(struct pci_bus *);
25 #define arch_setup_msi_irqs arch_setup_msi_irqs
26 #define arch_teardown_msi_irqs arch_teardown_msi_irqs
28 #define ZPCI_BUS_NR 0 /* default bus number */
29 #define ZPCI_DEVFN 0 /* default device number */
31 /* PCI Function Controls */
32 #define ZPCI_FC_FN_ENABLED 0x80
33 #define ZPCI_FC_ERROR 0x40
34 #define ZPCI_FC_BLOCKED 0x20
35 #define ZPCI_FC_DMA_ENABLED 0x10
43 /* hardware counters */
50 /* software counters */
51 atomic64_t allocated_pages;
52 atomic64_t mapped_pages;
53 atomic64_t unmapped_pages;
54 } __packed __aligned(16);
59 struct hlist_node msi_chain;
62 #define ZPCI_NR_MSI_VECS 64
63 #define ZPCI_MSI_MASK (ZPCI_NR_MSI_VECS - 1)
66 ZPCI_FN_STATE_RESERVED,
67 ZPCI_FN_STATE_STANDBY,
68 ZPCI_FN_STATE_CONFIGURED,
73 struct zpci_bar_struct {
74 u32 val; /* bar start & 3 flag bits */
75 u8 size; /* order 2 exponent */
76 u16 map_idx; /* index into bar mapping array */
79 /* Private data per function */
83 struct list_head entry; /* list of all zpci_devices, needed for hotplug, etc. */
85 enum zpci_state state;
86 u32 fid; /* function ID, used by sclp */
87 u32 fh; /* function handle, used by insn's */
88 u16 pchid; /* physical channel ID */
89 u8 pfgid; /* function group ID */
93 u64 msi_addr; /* MSI address */
94 struct zdev_irq_map *irq_map;
95 struct msi_map *msi_map[ZPCI_NR_MSI_VECS];
96 unsigned int aisb; /* number of the summary bit */
99 unsigned long *dma_table;
100 spinlock_t dma_table_lock;
103 spinlock_t iommu_bitmap_lock;
104 unsigned long *iommu_bitmap;
105 unsigned long iommu_size;
106 unsigned long iommu_pages;
107 unsigned int next_bit;
109 struct zpci_bar_struct bars[PCI_BAR_COUNT];
111 u64 start_dma; /* Start of available DMA addresses */
112 u64 end_dma; /* End of available DMA addresses */
113 u64 dma_mask; /* DMA address space mask */
115 /* Function measurement block */
116 struct zpci_fmb *fmb;
117 u16 fmb_update; /* update interval */
119 enum pci_bus_speed max_bus_speed;
121 struct dentry *debugfs_dev;
122 struct dentry *debugfs_perf;
123 struct dentry *debugfs_debug;
126 struct pci_hp_callback_ops {
127 int (*create_slot) (struct zpci_dev *zdev);
128 void (*remove_slot) (struct zpci_dev *zdev);
131 static inline bool zdev_enabled(struct zpci_dev *zdev)
133 return (zdev->fh & (1UL << 31)) ? true : false;
136 /* -----------------------------------------------------------------------------
138 ----------------------------------------------------------------------------- */
140 struct zpci_dev *zpci_alloc_device(void);
141 int zpci_create_device(struct zpci_dev *);
142 int zpci_enable_device(struct zpci_dev *);
143 int zpci_disable_device(struct zpci_dev *);
144 void zpci_stop_device(struct zpci_dev *);
145 void zpci_free_device(struct zpci_dev *);
146 int zpci_scan_device(struct zpci_dev *);
147 int zpci_register_ioat(struct zpci_dev *, u8, u64, u64, u64);
148 int zpci_unregister_ioat(struct zpci_dev *, u8);
151 int clp_find_pci_devices(void);
152 int clp_add_pci_device(u32, u32, int);
153 int clp_enable_fh(struct zpci_dev *, u8);
154 int clp_disable_fh(struct zpci_dev *);
157 struct msi_desc *__irq_get_msi_desc(unsigned int);
158 int zpci_msi_set_mask_bits(struct msi_desc *, u32, u32);
159 int zpci_setup_msi_irq(struct zpci_dev *, struct msi_desc *, unsigned int, int);
160 void zpci_teardown_msi_irq(struct zpci_dev *, struct msi_desc *);
161 int zpci_msihash_init(void);
162 void zpci_msihash_exit(void);
165 /* Error handling and recovery */
166 void zpci_event_error(void *);
167 void zpci_event_availability(void *);
168 #else /* CONFIG_PCI */
169 static inline void zpci_event_error(void *e) {}
170 static inline void zpci_event_availability(void *e) {}
171 #endif /* CONFIG_PCI */
174 struct zpci_dev *get_zdev(struct pci_dev *);
175 struct zpci_dev *get_zdev_by_fid(u32);
176 bool zpci_fid_present(u32);
179 int zpci_sysfs_add_device(struct device *);
180 void zpci_sysfs_remove_device(struct device *);
183 int zpci_dma_init(void);
184 void zpci_dma_exit(void);
187 extern struct mutex zpci_list_lock;
188 extern struct list_head zpci_list;
189 extern unsigned int s390_pci_probe;
191 void zpci_register_hp_ops(struct pci_hp_callback_ops *);
192 void zpci_deregister_hp_ops(void);
195 int zpci_fmb_enable_device(struct zpci_dev *);
196 int zpci_fmb_disable_device(struct zpci_dev *);
199 int zpci_debug_init(void);
200 void zpci_debug_exit(void);
201 void zpci_debug_init_device(struct zpci_dev *);
202 void zpci_debug_exit_device(struct zpci_dev *);
203 void zpci_debug_info(struct zpci_dev *, struct seq_file *);