nfsd: nfsd should drop CAP_MKNOD for non-root
[safe/jmp/linux-2.6] / drivers / pnp / base.h
index 6f60097..0b8d140 100644 (file)
@@ -1,4 +1,10 @@
+/*
+ * Copyright (C) 2008 Hewlett-Packard Development Company, L.P.
+ *     Bjorn Helgaas <bjorn.helgaas@hp.com>
+ */
+
 extern spinlock_t pnp_lock;
+extern struct device_attribute pnp_interface_attrs[];
 void *pnp_alloc(long size);
 
 int pnp_register_protocol(struct pnp_protocol *protocol);
@@ -11,30 +17,124 @@ struct pnp_card *pnp_alloc_card(struct pnp_protocol *, int id, char *pnpid);
 
 int pnp_add_device(struct pnp_dev *dev);
 struct pnp_id *pnp_add_id(struct pnp_dev *dev, char *id);
-int pnp_interface_attach_device(struct pnp_dev *dev);
 
 int pnp_add_card(struct pnp_card *card);
-struct pnp_id *pnp_add_card_id(struct pnp_card *card, char *id);
 void pnp_remove_card(struct pnp_card *card);
 int pnp_add_card_device(struct pnp_card *card, struct pnp_dev *dev);
 void pnp_remove_card_device(struct pnp_dev *dev);
 
-struct pnp_option *pnp_build_option(int priority);
-struct pnp_option *pnp_register_independent_option(struct pnp_dev *dev);
-struct pnp_option *pnp_register_dependent_option(struct pnp_dev *dev,
-                                                int priority);
-int pnp_register_irq_resource(struct pnp_dev *dev, struct pnp_option *option,
-                             struct pnp_irq *data);
-int pnp_register_dma_resource(struct pnp_dev *dev, struct pnp_option *option,
-                             struct pnp_dma *data);
-int pnp_register_port_resource(struct pnp_dev *dev, struct pnp_option *option,
-                              struct pnp_port *data);
-int pnp_register_mem_resource(struct pnp_dev *dev, struct pnp_option *option,
-                             struct pnp_mem *data);
+struct pnp_port {
+       resource_size_t min;    /* min base number */
+       resource_size_t max;    /* max base number */
+       resource_size_t align;  /* align boundary */
+       resource_size_t size;   /* size of range */
+       unsigned char flags;    /* port flags */
+};
+
+#define PNP_IRQ_NR 256
+typedef struct { DECLARE_BITMAP(bits, PNP_IRQ_NR); } pnp_irq_mask_t;
+
+struct pnp_irq {
+       pnp_irq_mask_t map;     /* bitmap for IRQ lines */
+       unsigned char flags;    /* IRQ flags */
+};
+
+struct pnp_dma {
+       unsigned char map;      /* bitmask for DMA channels */
+       unsigned char flags;    /* DMA flags */
+};
+
+struct pnp_mem {
+       resource_size_t min;    /* min base number */
+       resource_size_t max;    /* max base number */
+       resource_size_t align;  /* align boundary */
+       resource_size_t size;   /* size of range */
+       unsigned char flags;    /* memory flags */
+};
+
+#define PNP_OPTION_DEPENDENT           0x80000000
+#define PNP_OPTION_SET_MASK            0xffff
+#define PNP_OPTION_SET_SHIFT           12
+#define PNP_OPTION_PRIORITY_MASK       0xfff
+#define PNP_OPTION_PRIORITY_SHIFT      0
+
+#define PNP_RES_PRIORITY_PREFERRED     0
+#define PNP_RES_PRIORITY_ACCEPTABLE    1
+#define PNP_RES_PRIORITY_FUNCTIONAL    2
+#define PNP_RES_PRIORITY_INVALID       PNP_OPTION_PRIORITY_MASK
+
+struct pnp_option {
+       struct list_head list;
+       unsigned int flags;     /* independent/dependent, set, priority */
+
+       unsigned long type;     /* IORESOURCE_{IO,MEM,IRQ,DMA} */
+       union {
+               struct pnp_port port;
+               struct pnp_irq irq;
+               struct pnp_dma dma;
+               struct pnp_mem mem;
+       } u;
+};
+
+int pnp_register_irq_resource(struct pnp_dev *dev, unsigned int option_flags,
+                             pnp_irq_mask_t *map, unsigned char flags);
+int pnp_register_dma_resource(struct pnp_dev *dev, unsigned int option_flags,
+                             unsigned char map, unsigned char flags);
+int pnp_register_port_resource(struct pnp_dev *dev, unsigned int option_flags,
+                              resource_size_t min, resource_size_t max,
+                              resource_size_t align, resource_size_t size,
+                              unsigned char flags);
+int pnp_register_mem_resource(struct pnp_dev *dev, unsigned int option_flags,
+                             resource_size_t min, resource_size_t max,
+                             resource_size_t align, resource_size_t size,
+                             unsigned char flags);
+
+static inline int pnp_option_is_dependent(struct pnp_option *option)
+{
+       return option->flags & PNP_OPTION_DEPENDENT ? 1 : 0;
+}
+
+static inline unsigned int pnp_option_set(struct pnp_option *option)
+{
+       return (option->flags >> PNP_OPTION_SET_SHIFT) & PNP_OPTION_SET_MASK;
+}
+
+static inline unsigned int pnp_option_priority(struct pnp_option *option)
+{
+       return (option->flags >> PNP_OPTION_PRIORITY_SHIFT) &
+           PNP_OPTION_PRIORITY_MASK;
+}
+
+static inline unsigned int pnp_new_dependent_set(struct pnp_dev *dev,
+                                                int priority)
+{
+       unsigned int flags;
+
+       if (priority > PNP_RES_PRIORITY_FUNCTIONAL) {
+               dev_warn(&dev->dev, "invalid dependent option priority %d "
+                        "clipped to %d", priority,
+                        PNP_RES_PRIORITY_INVALID);
+               priority = PNP_RES_PRIORITY_INVALID;
+       }
+
+       flags = PNP_OPTION_DEPENDENT |
+           ((dev->num_dependent_sets & PNP_OPTION_SET_MASK) <<
+               PNP_OPTION_SET_SHIFT) |
+           ((priority & PNP_OPTION_PRIORITY_MASK) <<
+               PNP_OPTION_PRIORITY_SHIFT);
+
+       dev->num_dependent_sets++;
+
+       return flags;
+}
+
+char *pnp_option_priority_name(struct pnp_option *option);
+void dbg_pnp_show_option(struct pnp_dev *dev, struct pnp_option *option);
+
 void pnp_init_resources(struct pnp_dev *dev);
 
 void pnp_fixup_device(struct pnp_dev *dev);
-void pnp_free_option(struct pnp_option *option);
+void pnp_free_options(struct pnp_dev *dev);
 int __pnp_add_device(struct pnp_dev *dev);
 void __pnp_remove_device(struct pnp_dev *dev);
 
@@ -43,28 +143,18 @@ int pnp_check_mem(struct pnp_dev *dev, struct resource *res);
 int pnp_check_irq(struct pnp_dev *dev, struct resource *res);
 int pnp_check_dma(struct pnp_dev *dev, struct resource *res);
 
+char *pnp_resource_type_name(struct resource *res);
 void dbg_pnp_show_resources(struct pnp_dev *dev, char *desc);
 
-void pnp_init_resource(struct resource *res);
-
-struct pnp_resource *pnp_get_pnp_resource(struct pnp_dev *dev,
-                                         unsigned int type, unsigned int num);
-
-#define PNP_MAX_PORT           40
-#define PNP_MAX_MEM            24
-#define PNP_MAX_IRQ             2
-#define PNP_MAX_DMA             2
+void pnp_free_resources(struct pnp_dev *dev);
+unsigned long pnp_resource_type(struct resource *res);
 
 struct pnp_resource {
+       struct list_head list;
        struct resource res;
 };
 
-struct pnp_resource_table {
-       struct pnp_resource port[PNP_MAX_PORT];
-       struct pnp_resource mem[PNP_MAX_MEM];
-       struct pnp_resource dma[PNP_MAX_DMA];
-       struct pnp_resource irq[PNP_MAX_IRQ];
-};
+void pnp_free_resource(struct pnp_resource *pnp_res);
 
 struct pnp_resource *pnp_add_irq_resource(struct pnp_dev *dev, int irq,
                                          int flags);
@@ -76,3 +166,13 @@ struct pnp_resource *pnp_add_io_resource(struct pnp_dev *dev,
 struct pnp_resource *pnp_add_mem_resource(struct pnp_dev *dev,
                                          resource_size_t start,
                                          resource_size_t end, int flags);
+
+extern int pnp_debug;
+
+#if defined(CONFIG_PNP_DEBUG_MESSAGES)
+#define pnp_dbg(dev, format, arg...)                                   \
+       ({ if (pnp_debug) dev_printk(KERN_DEBUG, dev, format, ## arg); 0; })
+#else
+#define pnp_dbg(dev, format, arg...)                                   \
+       ({ if (0) dev_printk(KERN_DEBUG, dev, format, ## arg); 0; })
+#endif