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1da177e4 LT |
1 | #ifndef __ASM_S390_PCI_H |
2 | #define __ASM_S390_PCI_H | |
3 | ||
cd248341 | 4 | /* must be set before including asm-generic/pci.h */ |
1da177e4 | 5 | #define PCI_DMA_BUS_IS_PHYS (0) |
cd248341 JG |
6 | /* must be set before including pci_clp.h */ |
7 | #define PCI_BAR_COUNT 6 | |
1da177e4 | 8 | |
cd248341 JG |
9 | #include <asm-generic/pci.h> |
10 | #include <asm-generic/pci-dma-compat.h> | |
a755a45d | 11 | #include <asm/pci_clp.h> |
1da177e4 | 12 | |
cd248341 JG |
13 | #define PCIBIOS_MIN_IO 0x1000 |
14 | #define PCIBIOS_MIN_MEM 0x10000000 | |
15 | ||
16 | #define pcibios_assign_all_busses() (0) | |
17 | ||
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 *); | |
22 | ||
9a4da8a5 JG |
23 | /* MSI arch hooks */ |
24 | #define arch_setup_msi_irqs arch_setup_msi_irqs | |
25 | #define arch_teardown_msi_irqs arch_teardown_msi_irqs | |
26 | ||
cd248341 JG |
27 | #define ZPCI_BUS_NR 0 /* default bus number */ |
28 | #define ZPCI_DEVFN 0 /* default device number */ | |
29 | ||
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 | |
35 | ||
9a4da8a5 JG |
36 | struct msi_map { |
37 | unsigned long irq; | |
38 | struct msi_desc *msi; | |
39 | struct hlist_node msi_chain; | |
40 | }; | |
41 | ||
42 | #define ZPCI_NR_MSI_VECS 64 | |
43 | #define ZPCI_MSI_MASK (ZPCI_NR_MSI_VECS - 1) | |
44 | ||
cd248341 JG |
45 | enum zpci_state { |
46 | ZPCI_FN_STATE_RESERVED, | |
47 | ZPCI_FN_STATE_STANDBY, | |
48 | ZPCI_FN_STATE_CONFIGURED, | |
49 | ZPCI_FN_STATE_ONLINE, | |
50 | NR_ZPCI_FN_STATES, | |
51 | }; | |
52 | ||
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 */ | |
57 | }; | |
58 | ||
59 | /* Private data per function */ | |
60 | struct zpci_dev { | |
61 | struct pci_dev *pdev; | |
62 | struct pci_bus *bus; | |
63 | struct list_head entry; /* list of all zpci_devices, needed for hotplug, etc. */ | |
64 | ||
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 */ | |
70 | u16 domain; | |
71 | ||
9a4da8a5 JG |
72 | /* IRQ stuff */ |
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 */ | |
77 | ||
828b35f6 JG |
78 | /* DMA stuff */ |
79 | unsigned long *dma_table; | |
80 | spinlock_t dma_table_lock; | |
81 | int tlb_refresh; | |
82 | ||
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; | |
88 | ||
cd248341 JG |
89 | struct zpci_bar_struct bars[PCI_BAR_COUNT]; |
90 | ||
828b35f6 JG |
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 */ | |
94 | ||
cd248341 JG |
95 | enum pci_bus_speed max_bus_speed; |
96 | }; | |
97 | ||
7441b062 JG |
98 | struct pci_hp_callback_ops { |
99 | int (*create_slot) (struct zpci_dev *zdev); | |
100 | void (*remove_slot) (struct zpci_dev *zdev); | |
101 | }; | |
102 | ||
cd248341 JG |
103 | static inline bool zdev_enabled(struct zpci_dev *zdev) |
104 | { | |
105 | return (zdev->fh & (1UL << 31)) ? true : false; | |
106 | } | |
107 | ||
108 | /* ----------------------------------------------------------------------------- | |
109 | Prototypes | |
110 | ----------------------------------------------------------------------------- */ | |
111 | /* Base stuff */ | |
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 *); | |
828b35f6 JG |
118 | int zpci_register_ioat(struct zpci_dev *, u8, u64, u64, u64); |
119 | int zpci_unregister_ioat(struct zpci_dev *, u8); | |
cd248341 | 120 | |
a755a45d JG |
121 | /* CLP */ |
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 *); | |
126 | ||
9a4da8a5 JG |
127 | /* MSI */ |
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); | |
134 | ||
cbc0dd1f JG |
135 | /* Error handling and recovery */ |
136 | void zpci_event_error(void *); | |
137 | void zpci_event_availability(void *); | |
138 | ||
cd248341 JG |
139 | /* Helpers */ |
140 | struct zpci_dev *get_zdev(struct pci_dev *); | |
141 | struct zpci_dev *get_zdev_by_fid(u32); | |
142 | bool zpci_fid_present(u32); | |
143 | ||
1e8da956 JG |
144 | /* sysfs */ |
145 | int zpci_sysfs_add_device(struct device *); | |
146 | void zpci_sysfs_remove_device(struct device *); | |
147 | ||
828b35f6 JG |
148 | /* DMA */ |
149 | int zpci_dma_init(void); | |
150 | void zpci_dma_exit(void); | |
151 | ||
7441b062 JG |
152 | /* Hotplug */ |
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; | |
157 | ||
cd248341 | 158 | #endif |