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