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 <linux/mutex.h>
11 #include <asm-generic/pci.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
34 #define ZPCI_FMB_DMA_COUNTER_VALID (1 << 23)
36 struct zpci_fmb_fmt0
{
41 struct zpci_fmb_fmt1
{
48 struct zpci_fmb_fmt2
{
49 u64 consumed_work_units
;
63 /* format specific counters */
65 struct zpci_fmb_fmt0 fmt0
;
66 struct zpci_fmb_fmt1 fmt1
;
67 struct zpci_fmb_fmt2 fmt2
;
69 } __packed
__aligned(128);
72 ZPCI_FN_STATE_RESERVED
,
73 ZPCI_FN_STATE_STANDBY
,
74 ZPCI_FN_STATE_CONFIGURED
,
79 struct zpci_bar_struct
{
80 struct resource
*res
; /* bus resource */
81 u32 val
; /* bar start & 3 flag bits */
82 u16 map_idx
; /* index into bar mapping array */
83 u8 size
; /* order 2 exponent */
88 /* Private data per function */
91 struct list_head entry
; /* list of all zpci_devices, needed for hotplug, etc. */
93 enum zpci_state state
;
94 u32 fid
; /* function ID, used by sclp */
95 u32 fh
; /* function handle, used by insn's */
96 u16 vfn
; /* virtual function number */
97 u16 pchid
; /* physical channel ID */
98 u8 pfgid
; /* function group ID */
99 u8 pft
; /* pci function type */
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 */
108 u64 msi_addr
; /* MSI address */
109 unsigned int max_msi
; /* maximum number of MSI's */
110 struct airq_iv
*aibv
; /* adapter interrupt bit vector */
111 unsigned int aisb
; /* number of the summary bit */
114 unsigned long *dma_table
;
115 spinlock_t dma_table_lock
;
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
;
125 struct zpci_bar_struct bars
[PCI_BAR_COUNT
];
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 */
131 /* Function measurement block */
132 struct zpci_fmb
*fmb
;
133 u16 fmb_update
; /* update interval */
134 /* software counters */
135 atomic64_t allocated_pages
;
136 atomic64_t mapped_pages
;
137 atomic64_t unmapped_pages
;
139 enum pci_bus_speed max_bus_speed
;
141 struct dentry
*debugfs_dev
;
142 struct dentry
*debugfs_perf
;
144 struct s390_domain
*s390_domain
; /* s390 IOMMU domain data */
147 static inline bool zdev_enabled(struct zpci_dev
*zdev
)
149 return (zdev
->fh
& (1UL << 31)) ? true : false;
152 extern const struct attribute_group
*zpci_attr_groups
[];
154 /* -----------------------------------------------------------------------------
156 ----------------------------------------------------------------------------- */
158 int zpci_create_device(struct zpci_dev
*);
159 int zpci_enable_device(struct zpci_dev
*);
160 int zpci_disable_device(struct zpci_dev
*);
161 void zpci_stop_device(struct zpci_dev
*);
162 int zpci_register_ioat(struct zpci_dev
*, u8
, u64
, u64
, u64
);
163 int zpci_unregister_ioat(struct zpci_dev
*, u8
);
166 int clp_scan_pci_devices(void);
167 int clp_rescan_pci_devices(void);
168 int clp_rescan_pci_devices_simple(void);
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
*);
174 /* Error handling and recovery */
175 void zpci_event_error(void *);
176 void zpci_event_availability(void *);
177 void zpci_rescan(void);
178 bool zpci_is_enabled(void);
179 #else /* CONFIG_PCI */
180 static inline void zpci_event_error(void *e
) {}
181 static inline void zpci_event_availability(void *e
) {}
182 static inline void zpci_rescan(void) {}
183 #endif /* CONFIG_PCI */
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
)
193 static inline void zpci_exit_slot(struct zpci_dev
*zdev
) {}
194 #endif /* CONFIG_HOTPLUG_PCI_S390 */
197 static inline struct zpci_dev
*to_zpci(struct pci_dev
*pdev
)
199 return pdev
->sysdata
;
202 struct zpci_dev
*get_zdev_by_fid(u32
);
205 int zpci_dma_init(void);
206 void zpci_dma_exit(void);
209 int zpci_fmb_enable_device(struct zpci_dev
*);
210 int zpci_fmb_disable_device(struct zpci_dev
*);
213 int zpci_debug_init(void);
214 void zpci_debug_exit(void);
215 void zpci_debug_init_device(struct zpci_dev
*, const char *);
216 void zpci_debug_exit_device(struct zpci_dev
*);
217 void zpci_debug_info(struct zpci_dev
*, struct seq_file
*);
221 /* Returns the node based on PCI bus */
222 static inline int __pcibus_to_node(const struct pci_bus
*bus
)
227 static inline const struct cpumask
*
228 cpumask_of_pcibus(const struct pci_bus
*bus
)
230 return cpu_online_mask
;
233 #endif /* CONFIG_NUMA */