1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright (C) 2008 Hewlett-Packard Development Company, L.P. 4 * Bjorn Helgaas <bjorn.helgaas@hp.com> 5 */ 6 7 extern struct mutex pnp_lock; 8 extern const struct attribute_group *pnp_dev_groups[]; 9 void *pnp_alloc(long size); 10 11 int pnp_register_protocol(struct pnp_protocol *protocol); 12 void pnp_unregister_protocol(struct pnp_protocol *protocol); 13 14 #define PNP_EISA_ID_MASK 0x7fffffff 15 void pnp_eisa_id_to_string(u32 id, char *str); 16 struct pnp_dev *pnp_alloc_dev(struct pnp_protocol *, int id, 17 const char *pnpid); 18 struct pnp_card *pnp_alloc_card(struct pnp_protocol *, int id, char *pnpid); 19 20 int pnp_add_device(struct pnp_dev *dev); 21 struct pnp_id *pnp_add_id(struct pnp_dev *dev, const char *id); 22 23 int pnp_add_card(struct pnp_card *card); 24 void pnp_remove_card(struct pnp_card *card); 25 int pnp_add_card_device(struct pnp_card *card, struct pnp_dev *dev); 26 void pnp_remove_card_device(struct pnp_dev *dev); 27 28 struct pnp_port { 29 resource_size_t min; /* min base number */ 30 resource_size_t max; /* max base number */ 31 resource_size_t align; /* align boundary */ 32 resource_size_t size; /* size of range */ 33 unsigned char flags; /* port flags */ 34 }; 35 36 #define PNP_IRQ_NR 256 37 typedef struct { DECLARE_BITMAP(bits, PNP_IRQ_NR); } pnp_irq_mask_t; 38 39 struct pnp_irq { 40 pnp_irq_mask_t map; /* bitmap for IRQ lines */ 41 unsigned char flags; /* IRQ flags */ 42 }; 43 44 struct pnp_dma { 45 unsigned char map; /* bitmask for DMA channels */ 46 unsigned char flags; /* DMA flags */ 47 }; 48 49 struct pnp_mem { 50 resource_size_t min; /* min base number */ 51 resource_size_t max; /* max base number */ 52 resource_size_t align; /* align boundary */ 53 resource_size_t size; /* size of range */ 54 unsigned char flags; /* memory flags */ 55 }; 56 57 #define PNP_OPTION_DEPENDENT 0x80000000 58 #define PNP_OPTION_SET_MASK 0xffff 59 #define PNP_OPTION_SET_SHIFT 12 60 #define PNP_OPTION_PRIORITY_MASK 0xfff 61 #define PNP_OPTION_PRIORITY_SHIFT 0 62 63 #define PNP_RES_PRIORITY_PREFERRED 0 64 #define PNP_RES_PRIORITY_ACCEPTABLE 1 65 #define PNP_RES_PRIORITY_FUNCTIONAL 2 66 #define PNP_RES_PRIORITY_INVALID PNP_OPTION_PRIORITY_MASK 67 68 struct pnp_option { 69 struct list_head list; 70 unsigned int flags; /* independent/dependent, set, priority */ 71 72 unsigned long type; /* IORESOURCE_{IO,MEM,IRQ,DMA} */ 73 union { 74 struct pnp_port port; 75 struct pnp_irq irq; 76 struct pnp_dma dma; 77 struct pnp_mem mem; 78 } u; 79 }; 80 81 int pnp_register_irq_resource(struct pnp_dev *dev, unsigned int option_flags, 82 pnp_irq_mask_t *map, unsigned char flags); 83 int pnp_register_dma_resource(struct pnp_dev *dev, unsigned int option_flags, 84 unsigned char map, unsigned char flags); 85 int pnp_register_port_resource(struct pnp_dev *dev, unsigned int option_flags, 86 resource_size_t min, resource_size_t max, 87 resource_size_t align, resource_size_t size, 88 unsigned char flags); 89 int pnp_register_mem_resource(struct pnp_dev *dev, unsigned int option_flags, 90 resource_size_t min, resource_size_t max, 91 resource_size_t align, resource_size_t size, 92 unsigned char flags); 93 94 static inline int pnp_option_is_dependent(struct pnp_option *option) 95 { 96 return option->flags & PNP_OPTION_DEPENDENT ? 1 : 0; 97 } 98 99 static inline unsigned int pnp_option_set(struct pnp_option *option) 100 { 101 return (option->flags >> PNP_OPTION_SET_SHIFT) & PNP_OPTION_SET_MASK; 102 } 103 104 static inline unsigned int pnp_option_priority(struct pnp_option *option) 105 { 106 return (option->flags >> PNP_OPTION_PRIORITY_SHIFT) & 107 PNP_OPTION_PRIORITY_MASK; 108 } 109 110 static inline unsigned int pnp_new_dependent_set(struct pnp_dev *dev, 111 int priority) 112 { 113 unsigned int flags; 114 115 if (priority > PNP_RES_PRIORITY_FUNCTIONAL) { 116 dev_warn(&dev->dev, "invalid dependent option priority %d " 117 "clipped to %d", priority, 118 PNP_RES_PRIORITY_INVALID); 119 priority = PNP_RES_PRIORITY_INVALID; 120 } 121 122 flags = PNP_OPTION_DEPENDENT | 123 ((dev->num_dependent_sets & PNP_OPTION_SET_MASK) << 124 PNP_OPTION_SET_SHIFT) | 125 ((priority & PNP_OPTION_PRIORITY_MASK) << 126 PNP_OPTION_PRIORITY_SHIFT); 127 128 dev->num_dependent_sets++; 129 130 return flags; 131 } 132 133 char *pnp_option_priority_name(struct pnp_option *option); 134 void dbg_pnp_show_option(struct pnp_dev *dev, struct pnp_option *option); 135 136 void pnp_init_resources(struct pnp_dev *dev); 137 138 void pnp_fixup_device(struct pnp_dev *dev); 139 void pnp_free_options(struct pnp_dev *dev); 140 int __pnp_add_device(struct pnp_dev *dev); 141 void __pnp_remove_device(struct pnp_dev *dev); 142 143 int pnp_check_port(struct pnp_dev *dev, struct resource *res); 144 int pnp_check_mem(struct pnp_dev *dev, struct resource *res); 145 int pnp_check_irq(struct pnp_dev *dev, struct resource *res); 146 #ifdef CONFIG_ISA_DMA_API 147 int pnp_check_dma(struct pnp_dev *dev, struct resource *res); 148 #endif 149 150 char *pnp_resource_type_name(struct resource *res); 151 void dbg_pnp_show_resources(struct pnp_dev *dev, char *desc); 152 153 void pnp_free_resources(struct pnp_dev *dev); 154 unsigned long pnp_resource_type(struct resource *res); 155 156 struct pnp_resource { 157 struct list_head list; 158 struct resource res; 159 }; 160 161 void pnp_free_resource(struct pnp_resource *pnp_res); 162 163 struct pnp_resource *pnp_add_resource(struct pnp_dev *dev, 164 struct resource *res); 165 struct pnp_resource *pnp_add_irq_resource(struct pnp_dev *dev, int irq, 166 int flags); 167 struct pnp_resource *pnp_add_dma_resource(struct pnp_dev *dev, int dma, 168 int flags); 169 struct pnp_resource *pnp_add_io_resource(struct pnp_dev *dev, 170 resource_size_t start, 171 resource_size_t end, int flags); 172 struct pnp_resource *pnp_add_mem_resource(struct pnp_dev *dev, 173 resource_size_t start, 174 resource_size_t end, int flags); 175 struct pnp_resource *pnp_add_bus_resource(struct pnp_dev *dev, 176 resource_size_t start, 177 resource_size_t end); 178 179 extern int pnp_debug; 180 181 #if defined(CONFIG_PNP_DEBUG_MESSAGES) 182 #define pnp_dbg(dev, format, arg...) \ 183 ({ if (pnp_debug) dev_printk(KERN_DEBUG, dev, format, ## arg); 0; }) 184 #else 185 #define pnp_dbg(dev, format, arg...) \ 186 ({ if (0) dev_printk(KERN_DEBUG, dev, format, ## arg); 0; }) 187 #endif 188