drivers/pnp/base.h

   1 /*
   2  * Copyright (C) 2008 Hewlett-Packard Development Company, L.P.
   3  *      Bjorn Helgaas <bjorn.helgaas@hp.com>
   4  */
   5
   6 extern struct mutex pnp_lock;
   7 extern const struct attribute_group *pnp_dev_groups[];
   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_resource(struct pnp_dev *dev,
 163                                       struct resource *res);
 164 struct pnp_resource *pnp_add_irq_resource(struct pnp_dev *dev, int irq,
 165                                           int flags);
 166 struct pnp_resource *pnp_add_dma_resource(struct pnp_dev *dev, int dma,
 167                                           int flags);
 168 struct pnp_resource *pnp_add_io_resource(struct pnp_dev *dev,
 169                                          resource_size_t start,
 170                                          resource_size_t end, int flags);
 171 struct pnp_resource *pnp_add_mem_resource(struct pnp_dev *dev,
 172                                           resource_size_t start,
 173                                           resource_size_t end, int flags);
 174 struct pnp_resource *pnp_add_bus_resource(struct pnp_dev *dev,
 175                                           resource_size_t start,
 176                                           resource_size_t end);
 177
 178 extern int pnp_debug;
 179
 180 #if defined(CONFIG_PNP_DEBUG_MESSAGES)
 181 #define pnp_dbg(dev, format, arg...)                                    \
 182         ({ if (pnp_debug) dev_printk(KERN_DEBUG, dev, format, ## arg); 0; })
 183 #else
 184 #define pnp_dbg(dev, format, arg...)                                    \
 185         ({ if (0) dev_printk(KERN_DEBUG, dev, format, ## arg); 0; })
 186 #endif