linux/drivers/pnp/base.h
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   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_resource(struct pnp_dev *dev,
 163                                      struct resource *res);
 164struct pnp_resource *pnp_add_irq_resource(struct pnp_dev *dev, int irq,
 165                                          int flags);
 166struct pnp_resource *pnp_add_dma_resource(struct pnp_dev *dev, int dma,
 167                                          int flags);
 168struct pnp_resource *pnp_add_io_resource(struct pnp_dev *dev,
 169                                         resource_size_t start,
 170                                         resource_size_t end, int flags);
 171struct pnp_resource *pnp_add_mem_resource(struct pnp_dev *dev,
 172                                          resource_size_t start,
 173                                          resource_size_t end, int flags);
 174struct pnp_resource *pnp_add_bus_resource(struct pnp_dev *dev,
 175                                          resource_size_t start,
 176                                          resource_size_t end);
 177
 178extern 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
 187
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