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);
56 #define ZPCI_MSI_VEC_BITS 11
57 #define ZPCI_MSI_VEC_MAX (1 << ZPCI_MSI_VEC_BITS)
58 #define ZPCI_MSI_VEC_MASK (ZPCI_MSI_VEC_MAX - 1)
61 ZPCI_FN_STATE_RESERVED,
62 ZPCI_FN_STATE_STANDBY,
63 ZPCI_FN_STATE_CONFIGURED,
68 struct zpci_bar_struct {
69 u32 val; /* bar start & 3 flag bits */
70 u8 size; /* order 2 exponent */
71 u16 map_idx; /* index into bar mapping array */
74 /* Private data per function */
78 struct list_head entry; /* list of all zpci_devices, needed for hotplug, etc. */
80 enum zpci_state state;
81 u32 fid; /* function ID, used by sclp */
82 u32 fh; /* function handle, used by insn's */
83 u16 pchid; /* physical channel ID */
84 u8 pfgid; /* function group ID */
88 u64 msi_addr; /* MSI address */
89 struct airq_iv *aibv; /* adapter interrupt bit vector */
90 unsigned int aisb; /* number of the summary bit */
93 unsigned long *dma_table;
94 spinlock_t dma_table_lock;
97 spinlock_t iommu_bitmap_lock;
98 unsigned long *iommu_bitmap;
99 unsigned long iommu_size;
100 unsigned long iommu_pages;
101 unsigned int next_bit;
103 struct zpci_bar_struct bars[PCI_BAR_COUNT];
105 u64 start_dma; /* Start of available DMA addresses */
106 u64 end_dma; /* End of available DMA addresses */
107 u64 dma_mask; /* DMA address space mask */
109 /* Function measurement block */
110 struct zpci_fmb *fmb;
111 u16 fmb_update; /* update interval */
113 enum pci_bus_speed max_bus_speed;
115 struct dentry *debugfs_dev;
116 struct dentry *debugfs_perf;
119 static inline bool zdev_enabled(struct zpci_dev *zdev)
121 return (zdev->fh & (1UL << 31)) ? true : false;
124 /* -----------------------------------------------------------------------------
126 ----------------------------------------------------------------------------- */
128 struct zpci_dev *zpci_alloc_device(void);
129 int zpci_create_device(struct zpci_dev *);
130 int zpci_enable_device(struct zpci_dev *);
131 int zpci_disable_device(struct zpci_dev *);
132 void zpci_stop_device(struct zpci_dev *);
133 void zpci_free_device(struct zpci_dev *);
134 int zpci_register_ioat(struct zpci_dev *, u8, u64, u64, u64);
135 int zpci_unregister_ioat(struct zpci_dev *, u8);
138 int clp_find_pci_devices(void);
139 int clp_add_pci_device(u32, u32, int);
140 int clp_enable_fh(struct zpci_dev *, u8);
141 int clp_disable_fh(struct zpci_dev *);
144 /* Error handling and recovery */
145 void zpci_event_error(void *);
146 void zpci_event_availability(void *);
147 #else /* CONFIG_PCI */
148 static inline void zpci_event_error(void *e) {}
149 static inline void zpci_event_availability(void *e) {}
150 #endif /* CONFIG_PCI */
152 #ifdef CONFIG_HOTPLUG_PCI_S390
153 int zpci_init_slot(struct zpci_dev *);
154 void zpci_exit_slot(struct zpci_dev *);
155 #else /* CONFIG_HOTPLUG_PCI_S390 */
156 static inline int zpci_init_slot(struct zpci_dev *zdev)
160 static inline void zpci_exit_slot(struct zpci_dev *zdev) {}
161 #endif /* CONFIG_HOTPLUG_PCI_S390 */
164 struct zpci_dev *get_zdev(struct pci_dev *);
165 struct zpci_dev *get_zdev_by_fid(u32);
166 bool zpci_fid_present(u32);
169 int zpci_sysfs_add_device(struct device *);
170 void zpci_sysfs_remove_device(struct device *);
173 int zpci_dma_init(void);
174 void zpci_dma_exit(void);
177 int zpci_fmb_enable_device(struct zpci_dev *);
178 int zpci_fmb_disable_device(struct zpci_dev *);
181 int zpci_debug_init(void);
182 void zpci_debug_exit(void);
183 void zpci_debug_init_device(struct zpci_dev *);
184 void zpci_debug_exit_device(struct zpci_dev *);
185 void zpci_debug_info(struct zpci_dev *, struct seq_file *);