Commit | Line | Data |
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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 | |
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 | ||
f9dc447e SO |
34 | #define ZPCI_FMB_DMA_COUNTER_VALID (1 << 23) |
35 | ||
36 | struct zpci_fmb_fmt0 { | |
37 | u64 dma_rbytes; | |
38 | u64 dma_wbytes; | |
39 | }; | |
40 | ||
41 | struct zpci_fmb_fmt1 { | |
42 | u64 rx_bytes; | |
43 | u64 rx_packets; | |
44 | u64 tx_bytes; | |
45 | u64 tx_packets; | |
46 | }; | |
47 | ||
48 | struct zpci_fmb_fmt2 { | |
49 | u64 consumed_work_units; | |
50 | u64 max_work_units; | |
51 | }; | |
52 | ||
d0b08853 | 53 | struct zpci_fmb { |
f9dc447e SO |
54 | u32 format : 8; |
55 | u32 fmt_ind : 24; | |
d0b08853 JG |
56 | u32 samples; |
57 | u64 last_update; | |
f9dc447e | 58 | /* common counters */ |
d0b08853 JG |
59 | u64 ld_ops; |
60 | u64 st_ops; | |
61 | u64 stb_ops; | |
62 | u64 rpcit_ops; | |
f9dc447e SO |
63 | /* format specific counters */ |
64 | union { | |
65 | struct zpci_fmb_fmt0 fmt0; | |
66 | struct zpci_fmb_fmt1 fmt1; | |
67 | struct zpci_fmb_fmt2 fmt2; | |
68 | }; | |
9d89d9e6 | 69 | } __packed __aligned(128); |
d0b08853 | 70 | |
cd248341 JG |
71 | enum zpci_state { |
72 | ZPCI_FN_STATE_RESERVED, | |
73 | ZPCI_FN_STATE_STANDBY, | |
74 | ZPCI_FN_STATE_CONFIGURED, | |
75 | ZPCI_FN_STATE_ONLINE, | |
76 | NR_ZPCI_FN_STATES, | |
77 | }; | |
78 | ||
79 | struct zpci_bar_struct { | |
7a572a3a | 80 | struct resource *res; /* bus resource */ |
cd248341 | 81 | u32 val; /* bar start & 3 flag bits */ |
cd248341 | 82 | u16 map_idx; /* index into bar mapping array */ |
7a572a3a | 83 | u8 size; /* order 2 exponent */ |
cd248341 JG |
84 | }; |
85 | ||
8128f23c GS |
86 | struct s390_domain; |
87 | ||
cd248341 JG |
88 | /* Private data per function */ |
89 | struct zpci_dev { | |
cd248341 JG |
90 | struct pci_bus *bus; |
91 | struct list_head entry; /* list of all zpci_devices, needed for hotplug, etc. */ | |
92 | ||
93 | enum zpci_state state; | |
94 | u32 fid; /* function ID, used by sclp */ | |
95 | u32 fh; /* function handle, used by insn's */ | |
ac4995b9 | 96 | u16 vfn; /* virtual function number */ |
cd248341 JG |
97 | u16 pchid; /* physical channel ID */ |
98 | u8 pfgid; /* function group ID */ | |
ac4995b9 | 99 | u8 pft; /* pci function type */ |
cd248341 JG |
100 | u16 domain; |
101 | ||
80ed156a | 102 | struct mutex lock; |
ac4995b9 SO |
103 | u8 pfip[CLP_PFIP_NR_SEGMENTS]; /* pci function internal path */ |
104 | u32 uid; /* user defined id */ | |
105 | u8 util_str[CLP_UTIL_STR_LEN]; /* utility string */ | |
106 | ||
9a4da8a5 JG |
107 | /* IRQ stuff */ |
108 | u64 msi_addr; /* MSI address */ | |
b19148f6 | 109 | unsigned int max_msi; /* maximum number of MSI's */ |
5d0d8f43 | 110 | struct airq_iv *aibv; /* adapter interrupt bit vector */ |
9a4da8a5 JG |
111 | unsigned int aisb; /* number of the summary bit */ |
112 | ||
828b35f6 JG |
113 | /* DMA stuff */ |
114 | unsigned long *dma_table; | |
115 | spinlock_t dma_table_lock; | |
116 | int tlb_refresh; | |
117 | ||
118 | spinlock_t iommu_bitmap_lock; | |
119 | unsigned long *iommu_bitmap; | |
120 | unsigned long iommu_size; | |
121 | unsigned long iommu_pages; | |
122 | unsigned int next_bit; | |
123 | ||
7a572a3a | 124 | char res_name[16]; |
cd248341 JG |
125 | struct zpci_bar_struct bars[PCI_BAR_COUNT]; |
126 | ||
828b35f6 JG |
127 | u64 start_dma; /* Start of available DMA addresses */ |
128 | u64 end_dma; /* End of available DMA addresses */ | |
129 | u64 dma_mask; /* DMA address space mask */ | |
130 | ||
d0b08853 JG |
131 | /* Function measurement block */ |
132 | struct zpci_fmb *fmb; | |
133 | u16 fmb_update; /* update interval */ | |
6001018a SO |
134 | /* software counters */ |
135 | atomic64_t allocated_pages; | |
136 | atomic64_t mapped_pages; | |
137 | atomic64_t unmapped_pages; | |
d0b08853 | 138 | |
cd248341 | 139 | enum pci_bus_speed max_bus_speed; |
d0b08853 JG |
140 | |
141 | struct dentry *debugfs_dev; | |
142 | struct dentry *debugfs_perf; | |
8128f23c GS |
143 | |
144 | struct s390_domain *s390_domain; /* s390 IOMMU domain data */ | |
cd248341 JG |
145 | }; |
146 | ||
147 | static inline bool zdev_enabled(struct zpci_dev *zdev) | |
148 | { | |
149 | return (zdev->fh & (1UL << 31)) ? true : false; | |
150 | } | |
151 | ||
93065d04 SO |
152 | extern const struct attribute_group *zpci_attr_groups[]; |
153 | ||
cd248341 JG |
154 | /* ----------------------------------------------------------------------------- |
155 | Prototypes | |
156 | ----------------------------------------------------------------------------- */ | |
157 | /* Base stuff */ | |
cd248341 JG |
158 | int zpci_create_device(struct zpci_dev *); |
159 | int zpci_enable_device(struct zpci_dev *); | |
cb65a669 | 160 | int zpci_disable_device(struct zpci_dev *); |
cd248341 | 161 | void zpci_stop_device(struct zpci_dev *); |
828b35f6 JG |
162 | int zpci_register_ioat(struct zpci_dev *, u8, u64, u64, u64); |
163 | int zpci_unregister_ioat(struct zpci_dev *, u8); | |
cd248341 | 164 | |
a755a45d | 165 | /* CLP */ |
1d578966 SO |
166 | int clp_scan_pci_devices(void); |
167 | int clp_rescan_pci_devices(void); | |
57b5918c | 168 | int clp_rescan_pci_devices_simple(void); |
a755a45d JG |
169 | int clp_add_pci_device(u32, u32, int); |
170 | int clp_enable_fh(struct zpci_dev *, u8); | |
171 | int clp_disable_fh(struct zpci_dev *); | |
172 | ||
9a17e972 | 173 | #ifdef CONFIG_PCI |
cbc0dd1f JG |
174 | /* Error handling and recovery */ |
175 | void zpci_event_error(void *); | |
176 | void zpci_event_availability(void *); | |
57b5918c | 177 | void zpci_rescan(void); |
aa3b7c29 | 178 | bool zpci_is_enabled(void); |
9a17e972 SO |
179 | #else /* CONFIG_PCI */ |
180 | static inline void zpci_event_error(void *e) {} | |
181 | static inline void zpci_event_availability(void *e) {} | |
57b5918c | 182 | static inline void zpci_rescan(void) {} |
9a17e972 | 183 | #endif /* CONFIG_PCI */ |
cbc0dd1f | 184 | |
67f43f38 SO |
185 | #ifdef CONFIG_HOTPLUG_PCI_S390 |
186 | int zpci_init_slot(struct zpci_dev *); | |
187 | void zpci_exit_slot(struct zpci_dev *); | |
188 | #else /* CONFIG_HOTPLUG_PCI_S390 */ | |
189 | static inline int zpci_init_slot(struct zpci_dev *zdev) | |
190 | { | |
191 | return 0; | |
192 | } | |
193 | static inline void zpci_exit_slot(struct zpci_dev *zdev) {} | |
194 | #endif /* CONFIG_HOTPLUG_PCI_S390 */ | |
195 | ||
cd248341 | 196 | /* Helpers */ |
198a5278 SO |
197 | static inline struct zpci_dev *to_zpci(struct pci_dev *pdev) |
198 | { | |
199 | return pdev->sysdata; | |
200 | } | |
201 | ||
cd248341 | 202 | struct zpci_dev *get_zdev_by_fid(u32); |
cd248341 | 203 | |
828b35f6 JG |
204 | /* DMA */ |
205 | int zpci_dma_init(void); | |
206 | void zpci_dma_exit(void); | |
207 | ||
d0b08853 JG |
208 | /* FMB */ |
209 | int zpci_fmb_enable_device(struct zpci_dev *); | |
210 | int zpci_fmb_disable_device(struct zpci_dev *); | |
211 | ||
212 | /* Debug */ | |
213 | int zpci_debug_init(void); | |
214 | void zpci_debug_exit(void); | |
9a99649f | 215 | void zpci_debug_init_device(struct zpci_dev *, const char *); |
d0b08853 JG |
216 | void zpci_debug_exit_device(struct zpci_dev *); |
217 | void zpci_debug_info(struct zpci_dev *, struct seq_file *); | |
218 | ||
3a368f74 PH |
219 | #ifdef CONFIG_NUMA |
220 | ||
221 | /* Returns the node based on PCI bus */ | |
222 | static inline int __pcibus_to_node(const struct pci_bus *bus) | |
223 | { | |
224 | return NUMA_NO_NODE; | |
225 | } | |
226 | ||
227 | static inline const struct cpumask * | |
228 | cpumask_of_pcibus(const struct pci_bus *bus) | |
229 | { | |
230 | return cpu_online_mask; | |
231 | } | |
232 | ||
233 | #endif /* CONFIG_NUMA */ | |
234 | ||
cd248341 | 235 | #endif |