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1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Copyright (C) 2008 Hewlett-Packard Development Company, L.P.
4 * Bjorn Helgaas <[email protected]>
5 */
6
7extern struct mutex pnp_lock;
8extern const struct attribute_group *pnp_dev_groups[];
9extern const struct bus_type pnp_bus_type;
10
11int pnp_register_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);
23int pnp_add_card_device(struct pnp_card *card, struct pnp_dev *dev);
24
25struct pnp_port {
26 resource_size_t min; /* min base number */
27 resource_size_t max; /* max base number */
28 resource_size_t align; /* align boundary */
29 resource_size_t size; /* size of range */
30 unsigned char flags; /* port flags */
31};
32
33#define PNP_IRQ_NR 256
34typedef struct { DECLARE_BITMAP(bits, PNP_IRQ_NR); } pnp_irq_mask_t;
35
36struct pnp_irq {
37 pnp_irq_mask_t map; /* bitmap for IRQ lines */
38 unsigned char flags; /* IRQ flags */
39};
40
41struct pnp_dma {
42 unsigned char map; /* bitmask for DMA channels */
43 unsigned char flags; /* DMA flags */
44};
45
46struct pnp_mem {
47 resource_size_t min; /* min base number */
48 resource_size_t max; /* max base number */
49 resource_size_t align; /* align boundary */
50 resource_size_t size; /* size of range */
51 unsigned char flags; /* memory flags */
52};
53
54#define PNP_OPTION_DEPENDENT 0x80000000
55#define PNP_OPTION_SET_MASK 0xffff
56#define PNP_OPTION_SET_SHIFT 12
57#define PNP_OPTION_PRIORITY_MASK 0xfff
58#define PNP_OPTION_PRIORITY_SHIFT 0
59
60#define PNP_RES_PRIORITY_PREFERRED 0
61#define PNP_RES_PRIORITY_ACCEPTABLE 1
62#define PNP_RES_PRIORITY_FUNCTIONAL 2
63#define PNP_RES_PRIORITY_INVALID PNP_OPTION_PRIORITY_MASK
64
65struct pnp_option {
66 struct list_head list;
67 unsigned int flags; /* independent/dependent, set, priority */
68
69 unsigned long type; /* IORESOURCE_{IO,MEM,IRQ,DMA} */
70 union {
71 struct pnp_port port;
72 struct pnp_irq irq;
73 struct pnp_dma dma;
74 struct pnp_mem mem;
75 } u;
76};
77
78int pnp_register_irq_resource(struct pnp_dev *dev, unsigned int option_flags,
79 pnp_irq_mask_t *map, unsigned char flags);
80int pnp_register_dma_resource(struct pnp_dev *dev, unsigned int option_flags,
81 unsigned char map, unsigned char flags);
82int pnp_register_port_resource(struct pnp_dev *dev, unsigned int option_flags,
83 resource_size_t min, resource_size_t max,
84 resource_size_t align, resource_size_t size,
85 unsigned char flags);
86int pnp_register_mem_resource(struct pnp_dev *dev, unsigned int option_flags,
87 resource_size_t min, resource_size_t max,
88 resource_size_t align, resource_size_t size,
89 unsigned char flags);
90
91static inline int pnp_option_is_dependent(struct pnp_option *option)
92{
93 return option->flags & PNP_OPTION_DEPENDENT ? 1 : 0;
94}
95
96static inline unsigned int pnp_option_set(struct pnp_option *option)
97{
98 return (option->flags >> PNP_OPTION_SET_SHIFT) & PNP_OPTION_SET_MASK;
99}
100
101static inline unsigned int pnp_option_priority(struct pnp_option *option)
102{
103 return (option->flags >> PNP_OPTION_PRIORITY_SHIFT) &
104 PNP_OPTION_PRIORITY_MASK;
105}
106
107static inline unsigned int pnp_new_dependent_set(struct pnp_dev *dev,
108 int priority)
109{
110 unsigned int flags;
111
112 if (priority > PNP_RES_PRIORITY_FUNCTIONAL) {
113 dev_warn(&dev->dev, "invalid dependent option priority %d "
114 "clipped to %d", priority,
115 PNP_RES_PRIORITY_INVALID);
116 priority = PNP_RES_PRIORITY_INVALID;
117 }
118
119 flags = PNP_OPTION_DEPENDENT |
120 ((dev->num_dependent_sets & PNP_OPTION_SET_MASK) <<
121 PNP_OPTION_SET_SHIFT) |
122 ((priority & PNP_OPTION_PRIORITY_MASK) <<
123 PNP_OPTION_PRIORITY_SHIFT);
124
125 dev->num_dependent_sets++;
126
127 return flags;
128}
129
130char *pnp_option_priority_name(struct pnp_option *option);
131void dbg_pnp_show_option(struct pnp_dev *dev, struct pnp_option *option);
132
133void pnp_init_resources(struct pnp_dev *dev);
134
135void pnp_fixup_device(struct pnp_dev *dev);
136void pnp_free_options(struct pnp_dev *dev);
137int __pnp_add_device(struct pnp_dev *dev);
138
139int pnp_check_port(struct pnp_dev *dev, struct resource *res);
140int pnp_check_mem(struct pnp_dev *dev, struct resource *res);
141int pnp_check_irq(struct pnp_dev *dev, struct resource *res);
142#ifdef CONFIG_ISA_DMA_API
143int pnp_check_dma(struct pnp_dev *dev, struct resource *res);
144#endif
145
146char *pnp_resource_type_name(struct resource *res);
147void dbg_pnp_show_resources(struct pnp_dev *dev, char *desc);
148
149void pnp_free_resources(struct pnp_dev *dev);
150unsigned long pnp_resource_type(struct resource *res);
151
152struct pnp_resource {
153 struct list_head list;
154 struct resource res;
155};
156
157void pnp_free_resource(struct pnp_resource *pnp_res);
158
159struct pnp_resource *pnp_add_resource(struct pnp_dev *dev,
160 struct resource *res);
161struct pnp_resource *pnp_add_irq_resource(struct pnp_dev *dev, int irq,
162 int flags);
163struct pnp_resource *pnp_add_dma_resource(struct pnp_dev *dev, int dma,
164 int flags);
165struct pnp_resource *pnp_add_io_resource(struct pnp_dev *dev,
166 resource_size_t start,
167 resource_size_t end, int flags);
168struct pnp_resource *pnp_add_mem_resource(struct pnp_dev *dev,
169 resource_size_t start,
170 resource_size_t end, int flags);
171struct pnp_resource *pnp_add_bus_resource(struct pnp_dev *dev,
172 resource_size_t start,
173 resource_size_t end);
174
175extern int pnp_debug;
176
177#if defined(CONFIG_PNP_DEBUG_MESSAGES)
178#define pnp_dbg(dev, format, arg...) \
179 ({ if (pnp_debug) dev_printk(KERN_DEBUG, dev, format, ## arg); 0; })
180#else
181#define pnp_dbg(dev, format, arg...) \
182 ({ if (0) dev_printk(KERN_DEBUG, dev, format, ## arg); 0; })
183#endif