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);
53 #define ZPCI_MSI_VEC_BITS 11
54 #define ZPCI_MSI_VEC_MAX (1 << ZPCI_MSI_VEC_BITS)
55 #define ZPCI_MSI_VEC_MASK (ZPCI_MSI_VEC_MAX - 1)
58 ZPCI_FN_STATE_RESERVED,
59 ZPCI_FN_STATE_STANDBY,
60 ZPCI_FN_STATE_CONFIGURED,
65 struct zpci_bar_struct {
66 struct resource *res; /* bus resource */
67 u32 val; /* bar start & 3 flag bits */
68 u16 map_idx; /* index into bar mapping array */
69 u8 size; /* order 2 exponent */
72 /* Private data per function */
76 struct list_head entry; /* list of all zpci_devices, needed for hotplug, etc. */
78 enum zpci_state state;
79 u32 fid; /* function ID, used by sclp */
80 u32 fh; /* function handle, used by insn's */
81 u16 pchid; /* physical channel ID */
82 u8 pfgid; /* function group ID */
86 u64 msi_addr; /* MSI address */
87 struct airq_iv *aibv; /* adapter interrupt bit vector */
88 unsigned int aisb; /* number of the summary bit */
91 unsigned long *dma_table;
92 spinlock_t dma_table_lock;
95 spinlock_t iommu_bitmap_lock;
96 unsigned long *iommu_bitmap;
97 unsigned long iommu_size;
98 unsigned long iommu_pages;
99 unsigned int next_bit;
102 struct zpci_bar_struct bars[PCI_BAR_COUNT];
104 u64 start_dma; /* Start of available DMA addresses */
105 u64 end_dma; /* End of available DMA addresses */
106 u64 dma_mask; /* DMA address space mask */
108 /* Function measurement block */
109 struct zpci_fmb *fmb;
110 u16 fmb_update; /* update interval */
112 enum pci_bus_speed max_bus_speed;
114 struct dentry *debugfs_dev;
115 struct dentry *debugfs_perf;
118 static inline bool zdev_enabled(struct zpci_dev *zdev)
120 return (zdev->fh & (1UL << 31)) ? true : false;
123 /* -----------------------------------------------------------------------------
125 ----------------------------------------------------------------------------- */
127 int zpci_create_device(struct zpci_dev *);
128 int zpci_enable_device(struct zpci_dev *);
129 int zpci_disable_device(struct zpci_dev *);
130 void zpci_stop_device(struct zpci_dev *);
131 int zpci_register_ioat(struct zpci_dev *, u8, u64, u64, u64);
132 int zpci_unregister_ioat(struct zpci_dev *, u8);
135 int clp_scan_pci_devices(void);
136 int clp_rescan_pci_devices(void);
137 int clp_rescan_pci_devices_simple(void);
138 int clp_add_pci_device(u32, u32, int);
139 int clp_enable_fh(struct zpci_dev *, u8);
140 int clp_disable_fh(struct zpci_dev *);
143 /* Error handling and recovery */
144 void zpci_event_error(void *);
145 void zpci_event_availability(void *);
146 void zpci_rescan(void);
147 bool zpci_is_enabled(void);
148 #else /* CONFIG_PCI */
149 static inline void zpci_event_error(void *e) {}
150 static inline void zpci_event_availability(void *e) {}
151 static inline void zpci_rescan(void) {}
152 #endif /* CONFIG_PCI */
154 #ifdef CONFIG_HOTPLUG_PCI_S390
155 int zpci_init_slot(struct zpci_dev *);
156 void zpci_exit_slot(struct zpci_dev *);
157 #else /* CONFIG_HOTPLUG_PCI_S390 */
158 static inline int zpci_init_slot(struct zpci_dev *zdev)
162 static inline void zpci_exit_slot(struct zpci_dev *zdev) {}
163 #endif /* CONFIG_HOTPLUG_PCI_S390 */
166 struct zpci_dev *get_zdev(struct pci_dev *);
167 struct zpci_dev *get_zdev_by_fid(u32);
170 int zpci_sysfs_add_device(struct device *);
171 void zpci_sysfs_remove_device(struct device *);
174 int zpci_dma_init(void);
175 void zpci_dma_exit(void);
178 int zpci_fmb_enable_device(struct zpci_dev *);
179 int zpci_fmb_disable_device(struct zpci_dev *);
182 int zpci_debug_init(void);
183 void zpci_debug_exit(void);
184 void zpci_debug_init_device(struct zpci_dev *);
185 void zpci_debug_exit_device(struct zpci_dev *);
186 void zpci_debug_info(struct zpci_dev *, struct seq_file *);