Root/drivers/pnp/base.h

1/*
2 * Copyright (C) 2008 Hewlett-Packard Development Company, L.P.
3 * Bjorn Helgaas <bjorn.helgaas@hp.com>
4 */
5
6extern spinlock_t pnp_lock;
7extern struct device_attribute pnp_interface_attrs[];
8void *pnp_alloc(long size);
9
10int pnp_register_protocol(struct pnp_protocol *protocol);
11void pnp_unregister_protocol(struct pnp_protocol *protocol);
12
13#define PNP_EISA_ID_MASK 0x7fffffff
14void pnp_eisa_id_to_string(u32 id, char *str);
15struct pnp_dev *pnp_alloc_dev(struct pnp_protocol *, int id,
16                  const char *pnpid);
17struct pnp_card *pnp_alloc_card(struct pnp_protocol *, int id, char *pnpid);
18
19int pnp_add_device(struct pnp_dev *dev);
20struct pnp_id *pnp_add_id(struct pnp_dev *dev, const char *id);
21
22int pnp_add_card(struct pnp_card *card);
23void pnp_remove_card(struct pnp_card *card);
24int pnp_add_card_device(struct pnp_card *card, struct pnp_dev *dev);
25void pnp_remove_card_device(struct pnp_dev *dev);
26
27struct 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
36typedef struct { DECLARE_BITMAP(bits, PNP_IRQ_NR); } pnp_irq_mask_t;
37
38struct pnp_irq {
39    pnp_irq_mask_t map; /* bitmap for IRQ lines */
40    unsigned char flags; /* IRQ flags */
41};
42
43struct pnp_dma {
44    unsigned char map; /* bitmask for DMA channels */
45    unsigned char flags; /* DMA flags */
46};
47
48struct 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
67struct 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
80int pnp_register_irq_resource(struct pnp_dev *dev, unsigned int option_flags,
81                  pnp_irq_mask_t *map, unsigned char flags);
82int pnp_register_dma_resource(struct pnp_dev *dev, unsigned int option_flags,
83                  unsigned char map, unsigned char flags);
84int 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);
88int 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
93static inline int pnp_option_is_dependent(struct pnp_option *option)
94{
95    return option->flags & PNP_OPTION_DEPENDENT ? 1 : 0;
96}
97
98static 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
103static 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
109static 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
132char *pnp_option_priority_name(struct pnp_option *option);
133void dbg_pnp_show_option(struct pnp_dev *dev, struct pnp_option *option);
134
135void pnp_init_resources(struct pnp_dev *dev);
136
137void pnp_fixup_device(struct pnp_dev *dev);
138void pnp_free_options(struct pnp_dev *dev);
139int __pnp_add_device(struct pnp_dev *dev);
140void __pnp_remove_device(struct pnp_dev *dev);
141
142int pnp_check_port(struct pnp_dev *dev, struct resource *res);
143int pnp_check_mem(struct pnp_dev *dev, struct resource *res);
144int pnp_check_irq(struct pnp_dev *dev, struct resource *res);
145#ifdef CONFIG_ISA_DMA_API
146int pnp_check_dma(struct pnp_dev *dev, struct resource *res);
147#endif
148
149char *pnp_resource_type_name(struct resource *res);
150void dbg_pnp_show_resources(struct pnp_dev *dev, char *desc);
151
152void pnp_free_resources(struct pnp_dev *dev);
153unsigned long pnp_resource_type(struct resource *res);
154
155struct pnp_resource {
156    struct list_head list;
157    struct resource res;
158};
159
160void pnp_free_resource(struct pnp_resource *pnp_res);
161
162struct pnp_resource *pnp_add_irq_resource(struct pnp_dev *dev, int irq,
163                      int flags);
164struct pnp_resource *pnp_add_dma_resource(struct pnp_dev *dev, int dma,
165                      int flags);
166struct pnp_resource *pnp_add_io_resource(struct pnp_dev *dev,
167                     resource_size_t start,
168                     resource_size_t end, int flags);
169struct pnp_resource *pnp_add_mem_resource(struct pnp_dev *dev,
170                      resource_size_t start,
171                      resource_size_t end, int flags);
172struct pnp_resource *pnp_add_bus_resource(struct pnp_dev *dev,
173                      resource_size_t start,
174                      resource_size_t end);
175
176extern 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
185

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