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![Heiner Kallweit](/assets/img/avatar_default.png)
The kernel will complain anyway if it runs out of memory, so it is not necessary to print an extra error message when that happens and kzalloc() can be called directly instead of pnp_alloc() which then becomes redundant and can be dropped. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> [ rjw: Subject and changelog edits ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
186 lines
5.8 KiB
C
186 lines
5.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2008 Hewlett-Packard Development Company, L.P.
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* Bjorn Helgaas <bjorn.helgaas@hp.com>
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*/
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extern struct mutex pnp_lock;
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extern const struct attribute_group *pnp_dev_groups[];
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int pnp_register_protocol(struct pnp_protocol *protocol);
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void pnp_unregister_protocol(struct pnp_protocol *protocol);
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#define PNP_EISA_ID_MASK 0x7fffffff
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void pnp_eisa_id_to_string(u32 id, char *str);
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struct pnp_dev *pnp_alloc_dev(struct pnp_protocol *, int id,
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const char *pnpid);
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struct pnp_card *pnp_alloc_card(struct pnp_protocol *, int id, char *pnpid);
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int pnp_add_device(struct pnp_dev *dev);
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struct pnp_id *pnp_add_id(struct pnp_dev *dev, const char *id);
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int pnp_add_card(struct pnp_card *card);
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void pnp_remove_card(struct pnp_card *card);
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int pnp_add_card_device(struct pnp_card *card, struct pnp_dev *dev);
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void pnp_remove_card_device(struct pnp_dev *dev);
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struct pnp_port {
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resource_size_t min; /* min base number */
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resource_size_t max; /* max base number */
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resource_size_t align; /* align boundary */
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resource_size_t size; /* size of range */
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unsigned char flags; /* port flags */
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};
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#define PNP_IRQ_NR 256
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typedef struct { DECLARE_BITMAP(bits, PNP_IRQ_NR); } pnp_irq_mask_t;
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struct pnp_irq {
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pnp_irq_mask_t map; /* bitmap for IRQ lines */
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unsigned char flags; /* IRQ flags */
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};
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struct pnp_dma {
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unsigned char map; /* bitmask for DMA channels */
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unsigned char flags; /* DMA flags */
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};
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struct pnp_mem {
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resource_size_t min; /* min base number */
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resource_size_t max; /* max base number */
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resource_size_t align; /* align boundary */
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resource_size_t size; /* size of range */
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unsigned char flags; /* memory flags */
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};
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#define PNP_OPTION_DEPENDENT 0x80000000
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#define PNP_OPTION_SET_MASK 0xffff
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#define PNP_OPTION_SET_SHIFT 12
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#define PNP_OPTION_PRIORITY_MASK 0xfff
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#define PNP_OPTION_PRIORITY_SHIFT 0
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#define PNP_RES_PRIORITY_PREFERRED 0
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#define PNP_RES_PRIORITY_ACCEPTABLE 1
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#define PNP_RES_PRIORITY_FUNCTIONAL 2
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#define PNP_RES_PRIORITY_INVALID PNP_OPTION_PRIORITY_MASK
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struct pnp_option {
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struct list_head list;
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unsigned int flags; /* independent/dependent, set, priority */
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unsigned long type; /* IORESOURCE_{IO,MEM,IRQ,DMA} */
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union {
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struct pnp_port port;
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struct pnp_irq irq;
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struct pnp_dma dma;
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struct pnp_mem mem;
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} u;
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};
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int pnp_register_irq_resource(struct pnp_dev *dev, unsigned int option_flags,
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pnp_irq_mask_t *map, unsigned char flags);
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int pnp_register_dma_resource(struct pnp_dev *dev, unsigned int option_flags,
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unsigned char map, unsigned char flags);
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int pnp_register_port_resource(struct pnp_dev *dev, unsigned int option_flags,
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resource_size_t min, resource_size_t max,
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resource_size_t align, resource_size_t size,
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unsigned char flags);
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int pnp_register_mem_resource(struct pnp_dev *dev, unsigned int option_flags,
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resource_size_t min, resource_size_t max,
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resource_size_t align, resource_size_t size,
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unsigned char flags);
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static inline int pnp_option_is_dependent(struct pnp_option *option)
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{
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return option->flags & PNP_OPTION_DEPENDENT ? 1 : 0;
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}
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static inline unsigned int pnp_option_set(struct pnp_option *option)
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{
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return (option->flags >> PNP_OPTION_SET_SHIFT) & PNP_OPTION_SET_MASK;
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}
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static inline unsigned int pnp_option_priority(struct pnp_option *option)
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{
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return (option->flags >> PNP_OPTION_PRIORITY_SHIFT) &
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PNP_OPTION_PRIORITY_MASK;
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}
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static inline unsigned int pnp_new_dependent_set(struct pnp_dev *dev,
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int priority)
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{
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unsigned int flags;
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if (priority > PNP_RES_PRIORITY_FUNCTIONAL) {
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dev_warn(&dev->dev, "invalid dependent option priority %d "
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"clipped to %d", priority,
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PNP_RES_PRIORITY_INVALID);
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priority = PNP_RES_PRIORITY_INVALID;
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}
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flags = PNP_OPTION_DEPENDENT |
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((dev->num_dependent_sets & PNP_OPTION_SET_MASK) <<
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PNP_OPTION_SET_SHIFT) |
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((priority & PNP_OPTION_PRIORITY_MASK) <<
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PNP_OPTION_PRIORITY_SHIFT);
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dev->num_dependent_sets++;
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return flags;
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}
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char *pnp_option_priority_name(struct pnp_option *option);
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void dbg_pnp_show_option(struct pnp_dev *dev, struct pnp_option *option);
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void pnp_init_resources(struct pnp_dev *dev);
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void pnp_fixup_device(struct pnp_dev *dev);
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void pnp_free_options(struct pnp_dev *dev);
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int __pnp_add_device(struct pnp_dev *dev);
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void __pnp_remove_device(struct pnp_dev *dev);
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int pnp_check_port(struct pnp_dev *dev, struct resource *res);
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int pnp_check_mem(struct pnp_dev *dev, struct resource *res);
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int pnp_check_irq(struct pnp_dev *dev, struct resource *res);
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#ifdef CONFIG_ISA_DMA_API
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int pnp_check_dma(struct pnp_dev *dev, struct resource *res);
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#endif
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char *pnp_resource_type_name(struct resource *res);
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void dbg_pnp_show_resources(struct pnp_dev *dev, char *desc);
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void pnp_free_resources(struct pnp_dev *dev);
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unsigned long pnp_resource_type(struct resource *res);
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struct pnp_resource {
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struct list_head list;
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struct resource res;
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};
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void pnp_free_resource(struct pnp_resource *pnp_res);
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struct pnp_resource *pnp_add_resource(struct pnp_dev *dev,
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struct resource *res);
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struct pnp_resource *pnp_add_irq_resource(struct pnp_dev *dev, int irq,
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int flags);
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struct pnp_resource *pnp_add_dma_resource(struct pnp_dev *dev, int dma,
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int flags);
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struct pnp_resource *pnp_add_io_resource(struct pnp_dev *dev,
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resource_size_t start,
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resource_size_t end, int flags);
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struct pnp_resource *pnp_add_mem_resource(struct pnp_dev *dev,
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resource_size_t start,
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resource_size_t end, int flags);
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struct pnp_resource *pnp_add_bus_resource(struct pnp_dev *dev,
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resource_size_t start,
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resource_size_t end);
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extern int pnp_debug;
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#if defined(CONFIG_PNP_DEBUG_MESSAGES)
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#define pnp_dbg(dev, format, arg...) \
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({ if (pnp_debug) dev_printk(KERN_DEBUG, dev, format, ## arg); 0; })
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#else
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#define pnp_dbg(dev, format, arg...) \
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({ if (0) dev_printk(KERN_DEBUG, dev, format, ## arg); 0; })
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#endif
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