Commit | Line | Data |
---|---|---|
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 | |
57b5918c | 9 | #include <linux/pci.h> |
80ed156a | 10 | #include <linux/mutex.h> |
cd248341 | 11 | #include <asm-generic/pci.h> |
a755a45d | 12 | #include <asm/pci_clp.h> |
d0b08853 | 13 | #include <asm/pci_debug.h> |
1da177e4 | 14 | |
cd248341 JG |
15 | #define PCIBIOS_MIN_IO 0x1000 |
16 | #define PCIBIOS_MIN_MEM 0x10000000 | |
17 | ||
18 | #define pcibios_assign_all_busses() (0) | |
19 | ||
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 *); | |
24 | ||
25 | #define ZPCI_BUS_NR 0 /* default bus number */ | |
26 | #define ZPCI_DEVFN 0 /* default device number */ | |
27 | ||
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 | |
33 | ||
d0b08853 JG |
34 | struct zpci_fmb { |
35 | u32 format : 8; | |
36 | u32 dma_valid : 1; | |
37 | u32 : 23; | |
38 | u32 samples; | |
39 | u64 last_update; | |
40 | /* hardware counters */ | |
41 | u64 ld_ops; | |
42 | u64 st_ops; | |
43 | u64 stb_ops; | |
44 | u64 rpcit_ops; | |
45 | u64 dma_rbytes; | |
46 | u64 dma_wbytes; | |
9d89d9e6 SO |
47 | u64 pad[2]; |
48 | } __packed __aligned(128); | |
d0b08853 | 49 | |
cd248341 JG |
50 | enum zpci_state { |
51 | ZPCI_FN_STATE_RESERVED, | |
52 | ZPCI_FN_STATE_STANDBY, | |
53 | ZPCI_FN_STATE_CONFIGURED, | |
54 | ZPCI_FN_STATE_ONLINE, | |
55 | NR_ZPCI_FN_STATES, | |
56 | }; | |
57 | ||
58 | struct zpci_bar_struct { | |
7a572a3a | 59 | struct resource *res; /* bus resource */ |
cd248341 | 60 | u32 val; /* bar start & 3 flag bits */ |
cd248341 | 61 | u16 map_idx; /* index into bar mapping array */ |
7a572a3a | 62 | u8 size; /* order 2 exponent */ |
cd248341 JG |
63 | }; |
64 | ||
8128f23c GS |
65 | struct s390_domain; |
66 | ||
cd248341 JG |
67 | /* Private data per function */ |
68 | struct zpci_dev { | |
cd248341 JG |
69 | struct pci_bus *bus; |
70 | struct list_head entry; /* list of all zpci_devices, needed for hotplug, etc. */ | |
71 | ||
72 | enum zpci_state state; | |
73 | u32 fid; /* function ID, used by sclp */ | |
74 | u32 fh; /* function handle, used by insn's */ | |
ac4995b9 | 75 | u16 vfn; /* virtual function number */ |
cd248341 JG |
76 | u16 pchid; /* physical channel ID */ |
77 | u8 pfgid; /* function group ID */ | |
ac4995b9 | 78 | u8 pft; /* pci function type */ |
cd248341 JG |
79 | u16 domain; |
80 | ||
80ed156a | 81 | struct mutex lock; |
ac4995b9 SO |
82 | u8 pfip[CLP_PFIP_NR_SEGMENTS]; /* pci function internal path */ |
83 | u32 uid; /* user defined id */ | |
84 | u8 util_str[CLP_UTIL_STR_LEN]; /* utility string */ | |
85 | ||
9a4da8a5 JG |
86 | /* IRQ stuff */ |
87 | u64 msi_addr; /* MSI address */ | |
b19148f6 | 88 | unsigned int max_msi; /* maximum number of MSI's */ |
5d0d8f43 | 89 | struct airq_iv *aibv; /* adapter interrupt bit vector */ |
9a4da8a5 JG |
90 | unsigned int aisb; /* number of the summary bit */ |
91 | ||
828b35f6 JG |
92 | /* DMA stuff */ |
93 | unsigned long *dma_table; | |
94 | spinlock_t dma_table_lock; | |
95 | int tlb_refresh; | |
96 | ||
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; | |
102 | ||
7a572a3a | 103 | char res_name[16]; |
cd248341 JG |
104 | struct zpci_bar_struct bars[PCI_BAR_COUNT]; |
105 | ||
828b35f6 JG |
106 | u64 start_dma; /* Start of available DMA addresses */ |
107 | u64 end_dma; /* End of available DMA addresses */ | |
108 | u64 dma_mask; /* DMA address space mask */ | |
109 | ||
d0b08853 JG |
110 | /* Function measurement block */ |
111 | struct zpci_fmb *fmb; | |
112 | u16 fmb_update; /* update interval */ | |
6001018a SO |
113 | /* software counters */ |
114 | atomic64_t allocated_pages; | |
115 | atomic64_t mapped_pages; | |
116 | atomic64_t unmapped_pages; | |
d0b08853 | 117 | |
cd248341 | 118 | enum pci_bus_speed max_bus_speed; |
d0b08853 JG |
119 | |
120 | struct dentry *debugfs_dev; | |
121 | struct dentry *debugfs_perf; | |
8128f23c GS |
122 | |
123 | struct s390_domain *s390_domain; /* s390 IOMMU domain data */ | |
cd248341 JG |
124 | }; |
125 | ||
126 | static inline bool zdev_enabled(struct zpci_dev *zdev) | |
127 | { | |
128 | return (zdev->fh & (1UL << 31)) ? true : false; | |
129 | } | |
130 | ||
93065d04 SO |
131 | extern const struct attribute_group *zpci_attr_groups[]; |
132 | ||
cd248341 JG |
133 | /* ----------------------------------------------------------------------------- |
134 | Prototypes | |
135 | ----------------------------------------------------------------------------- */ | |
136 | /* Base stuff */ | |
cd248341 JG |
137 | int zpci_create_device(struct zpci_dev *); |
138 | int zpci_enable_device(struct zpci_dev *); | |
cb65a669 | 139 | int zpci_disable_device(struct zpci_dev *); |
cd248341 | 140 | void zpci_stop_device(struct zpci_dev *); |
828b35f6 JG |
141 | int zpci_register_ioat(struct zpci_dev *, u8, u64, u64, u64); |
142 | int zpci_unregister_ioat(struct zpci_dev *, u8); | |
cd248341 | 143 | |
a755a45d | 144 | /* CLP */ |
1d578966 SO |
145 | int clp_scan_pci_devices(void); |
146 | int clp_rescan_pci_devices(void); | |
57b5918c | 147 | int clp_rescan_pci_devices_simple(void); |
a755a45d JG |
148 | int clp_add_pci_device(u32, u32, int); |
149 | int clp_enable_fh(struct zpci_dev *, u8); | |
150 | int clp_disable_fh(struct zpci_dev *); | |
151 | ||
9a17e972 | 152 | #ifdef CONFIG_PCI |
cbc0dd1f JG |
153 | /* Error handling and recovery */ |
154 | void zpci_event_error(void *); | |
155 | void zpci_event_availability(void *); | |
57b5918c | 156 | void zpci_rescan(void); |
aa3b7c29 | 157 | bool zpci_is_enabled(void); |
9a17e972 SO |
158 | #else /* CONFIG_PCI */ |
159 | static inline void zpci_event_error(void *e) {} | |
160 | static inline void zpci_event_availability(void *e) {} | |
57b5918c | 161 | static inline void zpci_rescan(void) {} |
9a17e972 | 162 | #endif /* CONFIG_PCI */ |
cbc0dd1f | 163 | |
67f43f38 SO |
164 | #ifdef CONFIG_HOTPLUG_PCI_S390 |
165 | int zpci_init_slot(struct zpci_dev *); | |
166 | void zpci_exit_slot(struct zpci_dev *); | |
167 | #else /* CONFIG_HOTPLUG_PCI_S390 */ | |
168 | static inline int zpci_init_slot(struct zpci_dev *zdev) | |
169 | { | |
170 | return 0; | |
171 | } | |
172 | static inline void zpci_exit_slot(struct zpci_dev *zdev) {} | |
173 | #endif /* CONFIG_HOTPLUG_PCI_S390 */ | |
174 | ||
cd248341 | 175 | /* Helpers */ |
198a5278 SO |
176 | static inline struct zpci_dev *to_zpci(struct pci_dev *pdev) |
177 | { | |
178 | return pdev->sysdata; | |
179 | } | |
180 | ||
cd248341 | 181 | struct zpci_dev *get_zdev_by_fid(u32); |
cd248341 | 182 | |
828b35f6 JG |
183 | /* DMA */ |
184 | int zpci_dma_init(void); | |
185 | void zpci_dma_exit(void); | |
186 | ||
d0b08853 JG |
187 | /* FMB */ |
188 | int zpci_fmb_enable_device(struct zpci_dev *); | |
189 | int zpci_fmb_disable_device(struct zpci_dev *); | |
190 | ||
191 | /* Debug */ | |
192 | int zpci_debug_init(void); | |
193 | void zpci_debug_exit(void); | |
9a99649f | 194 | void zpci_debug_init_device(struct zpci_dev *, const char *); |
d0b08853 JG |
195 | void zpci_debug_exit_device(struct zpci_dev *); |
196 | void zpci_debug_info(struct zpci_dev *, struct seq_file *); | |
197 | ||
3a368f74 PH |
198 | #ifdef CONFIG_NUMA |
199 | ||
200 | /* Returns the node based on PCI bus */ | |
201 | static inline int __pcibus_to_node(const struct pci_bus *bus) | |
202 | { | |
203 | return NUMA_NO_NODE; | |
204 | } | |
205 | ||
206 | static inline const struct cpumask * | |
207 | cpumask_of_pcibus(const struct pci_bus *bus) | |
208 | { | |
209 | return cpu_online_mask; | |
210 | } | |
211 | ||
212 | #endif /* CONFIG_NUMA */ | |
213 | ||
cd248341 | 214 | #endif |