Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
base.h
Go to the documentation of this file.
1 /*
2  * Copyright (C) 2008 Hewlett-Packard Development Company, L.P.
3  * Bjorn Helgaas <[email protected]>
4  */
5 
6 extern spinlock_t pnp_lock;
7 extern struct device_attribute pnp_interface_attrs[];
8 void *pnp_alloc(long size);
9 
10 int pnp_register_protocol(struct pnp_protocol *protocol);
11 void pnp_unregister_protocol(struct pnp_protocol *protocol);
12 
13 #define PNP_EISA_ID_MASK 0x7fffffff
14 void pnp_eisa_id_to_string(u32 id, char *str);
15 struct pnp_dev *pnp_alloc_dev(struct pnp_protocol *, int id,
16  const char *pnpid);
17 struct pnp_card *pnp_alloc_card(struct pnp_protocol *, int id, char *pnpid);
18 
19 int pnp_add_device(struct pnp_dev *dev);
20 struct pnp_id *pnp_add_id(struct pnp_dev *dev, const char *id);
21 
22 int pnp_add_card(struct pnp_card *card);
23 void pnp_remove_card(struct pnp_card *card);
24 int pnp_add_card_device(struct pnp_card *card, struct pnp_dev *dev);
25 void pnp_remove_card_device(struct pnp_dev *dev);
26 
27 struct pnp_port {
28  resource_size_t min; /* min base number */
29  resource_size_t max; /* max base number */
30  resource_size_t align; /* align boundary */
31  resource_size_t size; /* size of range */
32  unsigned char flags; /* port flags */
33 };
34 
35 #define PNP_IRQ_NR 256
36 typedef struct { DECLARE_BITMAP(bits, PNP_IRQ_NR); } pnp_irq_mask_t;
37 
38 struct pnp_irq {
39  pnp_irq_mask_t map; /* bitmap for IRQ lines */
40  unsigned char flags; /* IRQ flags */
41 };
42 
43 struct pnp_dma {
44  unsigned char map; /* bitmask for DMA channels */
45  unsigned char flags; /* DMA flags */
46 };
47 
48 struct pnp_mem {
49  resource_size_t min; /* min base number */
50  resource_size_t max; /* max base number */
51  resource_size_t align; /* align boundary */
52  resource_size_t size; /* size of range */
53  unsigned char flags; /* memory flags */
54 };
55 
56 #define PNP_OPTION_DEPENDENT 0x80000000
57 #define PNP_OPTION_SET_MASK 0xffff
58 #define PNP_OPTION_SET_SHIFT 12
59 #define PNP_OPTION_PRIORITY_MASK 0xfff
60 #define PNP_OPTION_PRIORITY_SHIFT 0
61 
62 #define PNP_RES_PRIORITY_PREFERRED 0
63 #define PNP_RES_PRIORITY_ACCEPTABLE 1
64 #define PNP_RES_PRIORITY_FUNCTIONAL 2
65 #define PNP_RES_PRIORITY_INVALID PNP_OPTION_PRIORITY_MASK
66 
67 struct pnp_option {
68  struct list_head list;
69  unsigned int flags; /* independent/dependent, set, priority */
70 
71  unsigned long type; /* IORESOURCE_{IO,MEM,IRQ,DMA} */
72  union {
73  struct pnp_port port;
74  struct pnp_irq irq;
75  struct pnp_dma dma;
76  struct pnp_mem mem;
77  } u;
78 };
79 
80 int pnp_register_irq_resource(struct pnp_dev *dev, unsigned int option_flags,
81  pnp_irq_mask_t *map, unsigned char flags);
82 int pnp_register_dma_resource(struct pnp_dev *dev, unsigned int option_flags,
83  unsigned char map, unsigned char flags);
84 int pnp_register_port_resource(struct pnp_dev *dev, unsigned int option_flags,
85  resource_size_t min, resource_size_t max,
86  resource_size_t align, resource_size_t size,
87  unsigned char flags);
88 int pnp_register_mem_resource(struct pnp_dev *dev, unsigned int option_flags,
89  resource_size_t min, resource_size_t max,
90  resource_size_t align, resource_size_t size,
91  unsigned char flags);
92 
93 static inline int pnp_option_is_dependent(struct pnp_option *option)
94 {
95  return option->flags & PNP_OPTION_DEPENDENT ? 1 : 0;
96 }
97 
98 static inline unsigned int pnp_option_set(struct pnp_option *option)
99 {
100  return (option->flags >> PNP_OPTION_SET_SHIFT) & PNP_OPTION_SET_MASK;
101 }
102 
103 static inline unsigned int pnp_option_priority(struct pnp_option *option)
104 {
105  return (option->flags >> PNP_OPTION_PRIORITY_SHIFT) &
106  PNP_OPTION_PRIORITY_MASK;
107 }
108 
109 static inline unsigned int pnp_new_dependent_set(struct pnp_dev *dev,
110  int priority)
111 {
112  unsigned int flags;
113 
114  if (priority > PNP_RES_PRIORITY_FUNCTIONAL) {
115  dev_warn(&dev->dev, "invalid dependent option priority %d "
116  "clipped to %d", priority,
117  PNP_RES_PRIORITY_INVALID);
118  priority = PNP_RES_PRIORITY_INVALID;
119  }
120 
121  flags = PNP_OPTION_DEPENDENT |
122  ((dev->num_dependent_sets & PNP_OPTION_SET_MASK) <<
123  PNP_OPTION_SET_SHIFT) |
124  ((priority & PNP_OPTION_PRIORITY_MASK) <<
125  PNP_OPTION_PRIORITY_SHIFT);
126 
127  dev->num_dependent_sets++;
128 
129  return flags;
130 }
131 
132 char *pnp_option_priority_name(struct pnp_option *option);
133 void dbg_pnp_show_option(struct pnp_dev *dev, struct pnp_option *option);
134 
135 void pnp_init_resources(struct pnp_dev *dev);
136 
137 void pnp_fixup_device(struct pnp_dev *dev);
138 void pnp_free_options(struct pnp_dev *dev);
139 int __pnp_add_device(struct pnp_dev *dev);
140 void __pnp_remove_device(struct pnp_dev *dev);
141 
142 int pnp_check_port(struct pnp_dev *dev, struct resource *res);
143 int pnp_check_mem(struct pnp_dev *dev, struct resource *res);
144 int pnp_check_irq(struct pnp_dev *dev, struct resource *res);
145 #ifdef CONFIG_ISA_DMA_API
146 int pnp_check_dma(struct pnp_dev *dev, struct resource *res);
147 #endif
148 
149 char *pnp_resource_type_name(struct resource *res);
150 void dbg_pnp_show_resources(struct pnp_dev *dev, char *desc);
151 
152 void pnp_free_resources(struct pnp_dev *dev);
153 unsigned long pnp_resource_type(struct resource *res);
154 
155 struct pnp_resource {
156  struct list_head list;
157  struct resource res;
158 };
159 
160 void pnp_free_resource(struct pnp_resource *pnp_res);
161 
162 struct pnp_resource *pnp_add_irq_resource(struct pnp_dev *dev, int irq,
163  int flags);
164 struct pnp_resource *pnp_add_dma_resource(struct pnp_dev *dev, int dma,
165  int flags);
166 struct pnp_resource *pnp_add_io_resource(struct pnp_dev *dev,
167  resource_size_t start,
168  resource_size_t end, int flags);
169 struct pnp_resource *pnp_add_mem_resource(struct pnp_dev *dev,
170  resource_size_t start,
171  resource_size_t end, int flags);
172 struct pnp_resource *pnp_add_bus_resource(struct pnp_dev *dev,
173  resource_size_t start,
174  resource_size_t end);
175 
176 extern int pnp_debug;
177 
178 #if defined(CONFIG_PNP_DEBUG_MESSAGES)
179 #define pnp_dbg(dev, format, arg...) \
180  ({ if (pnp_debug) dev_printk(KERN_DEBUG, dev, format, ## arg); 0; })
181 #else
182 #define pnp_dbg(dev, format, arg...) \
183  ({ if (0) dev_printk(KERN_DEBUG, dev, format, ## arg); 0; })
184 #endif
Generated on Thu Jan 10 2013 13:09:46 for Linux Kernel by   doxygen 1.8.2