455 lines
16 KiB
C
455 lines
16 KiB
C
/*
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* Linux Plug and Play Support
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* Copyright by Adam Belay <ambx1@neo.rr.com>
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*
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*/
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#ifndef _LINUX_PNP_H
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#define _LINUX_PNP_H
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#ifdef __KERNEL__
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#include <linux/device.h>
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#include <linux/list.h>
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#include <linux/errno.h>
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#include <linux/mod_devicetable.h>
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#define PNP_MAX_PORT 8
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#define PNP_MAX_MEM 4
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#define PNP_MAX_IRQ 2
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#define PNP_MAX_DMA 2
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#define PNP_NAME_LEN 50
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struct pnp_protocol;
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struct pnp_dev;
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/*
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* Resource Management
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*/
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/* Use these instead of directly reading pnp_dev to get resource information */
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#define pnp_port_start(dev,bar) ((dev)->res.port_resource[(bar)].start)
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#define pnp_port_end(dev,bar) ((dev)->res.port_resource[(bar)].end)
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#define pnp_port_flags(dev,bar) ((dev)->res.port_resource[(bar)].flags)
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#define pnp_port_valid(dev,bar) \
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((pnp_port_flags((dev),(bar)) & (IORESOURCE_IO | IORESOURCE_UNSET)) \
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== IORESOURCE_IO)
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#define pnp_port_len(dev,bar) \
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((pnp_port_start((dev),(bar)) == 0 && \
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pnp_port_end((dev),(bar)) == \
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pnp_port_start((dev),(bar))) ? 0 : \
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\
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(pnp_port_end((dev),(bar)) - \
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pnp_port_start((dev),(bar)) + 1))
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#define pnp_mem_start(dev,bar) ((dev)->res.mem_resource[(bar)].start)
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#define pnp_mem_end(dev,bar) ((dev)->res.mem_resource[(bar)].end)
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#define pnp_mem_flags(dev,bar) ((dev)->res.mem_resource[(bar)].flags)
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#define pnp_mem_valid(dev,bar) \
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((pnp_mem_flags((dev),(bar)) & (IORESOURCE_MEM | IORESOURCE_UNSET)) \
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== IORESOURCE_MEM)
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#define pnp_mem_len(dev,bar) \
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((pnp_mem_start((dev),(bar)) == 0 && \
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pnp_mem_end((dev),(bar)) == \
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pnp_mem_start((dev),(bar))) ? 0 : \
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\
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(pnp_mem_end((dev),(bar)) - \
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pnp_mem_start((dev),(bar)) + 1))
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#define pnp_irq(dev,bar) ((dev)->res.irq_resource[(bar)].start)
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#define pnp_irq_flags(dev,bar) ((dev)->res.irq_resource[(bar)].flags)
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#define pnp_irq_valid(dev,bar) \
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((pnp_irq_flags((dev),(bar)) & (IORESOURCE_IRQ | IORESOURCE_UNSET)) \
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== IORESOURCE_IRQ)
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#define pnp_dma(dev,bar) ((dev)->res.dma_resource[(bar)].start)
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#define pnp_dma_flags(dev,bar) ((dev)->res.dma_resource[(bar)].flags)
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#define pnp_dma_valid(dev,bar) \
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((pnp_dma_flags((dev),(bar)) & (IORESOURCE_DMA | IORESOURCE_UNSET)) \
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== IORESOURCE_DMA)
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#define PNP_PORT_FLAG_16BITADDR (1<<0)
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#define PNP_PORT_FLAG_FIXED (1<<1)
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struct pnp_port {
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unsigned short min; /* min base number */
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unsigned short max; /* max base number */
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unsigned char align; /* align boundary */
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unsigned char size; /* size of range */
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unsigned char flags; /* port flags */
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unsigned char pad; /* pad */
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struct pnp_port *next; /* next port */
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};
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#define PNP_IRQ_NR 256
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struct pnp_irq {
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DECLARE_BITMAP(map, PNP_IRQ_NR); /* bitmaks for IRQ lines */
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unsigned char flags; /* IRQ flags */
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unsigned char pad; /* pad */
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struct pnp_irq *next; /* next IRQ */
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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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struct pnp_dma *next; /* next port */
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};
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struct pnp_mem {
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unsigned int min; /* min base number */
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unsigned int max; /* max base number */
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unsigned int align; /* align boundary */
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unsigned int size; /* size of range */
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unsigned char flags; /* memory flags */
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unsigned char pad; /* pad */
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struct pnp_mem *next; /* next memory resource */
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};
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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 65535
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struct pnp_option {
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unsigned short priority; /* priority */
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struct pnp_port *port; /* first port */
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struct pnp_irq *irq; /* first IRQ */
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struct pnp_dma *dma; /* first DMA */
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struct pnp_mem *mem; /* first memory resource */
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struct pnp_option *next; /* used to chain dependent resources */
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};
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struct pnp_resource_table {
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struct resource port_resource[PNP_MAX_PORT];
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struct resource mem_resource[PNP_MAX_MEM];
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struct resource dma_resource[PNP_MAX_DMA];
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struct resource irq_resource[PNP_MAX_IRQ];
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};
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/*
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* Device Managemnt
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*/
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struct pnp_card {
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struct device dev; /* Driver Model device interface */
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unsigned char number; /* used as an index, must be unique */
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struct list_head global_list; /* node in global list of cards */
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struct list_head protocol_list; /* node in protocol's list of cards */
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struct list_head devices; /* devices attached to the card */
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struct pnp_protocol * protocol;
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struct pnp_id * id; /* contains supported EISA IDs*/
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char name[PNP_NAME_LEN]; /* contains a human-readable name */
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unsigned char pnpver; /* Plug & Play version */
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unsigned char productver; /* product version */
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unsigned int serial; /* serial number */
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unsigned char checksum; /* if zero - checksum passed */
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struct proc_dir_entry *procdir; /* directory entry in /proc/bus/isapnp */
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};
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#define global_to_pnp_card(n) list_entry(n, struct pnp_card, global_list)
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#define protocol_to_pnp_card(n) list_entry(n, struct pnp_card, protocol_list)
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#define to_pnp_card(n) container_of(n, struct pnp_card, dev)
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#define pnp_for_each_card(card) \
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for((card) = global_to_pnp_card(pnp_cards.next); \
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(card) != global_to_pnp_card(&pnp_cards); \
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(card) = global_to_pnp_card((card)->global_list.next))
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struct pnp_card_link {
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struct pnp_card * card;
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struct pnp_card_driver * driver;
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void * driver_data;
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};
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static inline void *pnp_get_card_drvdata (struct pnp_card_link *pcard)
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{
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return pcard->driver_data;
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}
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static inline void pnp_set_card_drvdata (struct pnp_card_link *pcard, void *data)
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{
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pcard->driver_data = data;
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}
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struct pnp_dev {
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struct device dev; /* Driver Model device interface */
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unsigned char number; /* used as an index, must be unique */
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int status;
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struct list_head global_list; /* node in global list of devices */
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struct list_head protocol_list; /* node in list of device's protocol */
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struct list_head card_list; /* node in card's list of devices */
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struct list_head rdev_list; /* node in cards list of requested devices */
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struct pnp_protocol * protocol;
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struct pnp_card * card; /* card the device is attached to, none if NULL */
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struct pnp_driver * driver;
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struct pnp_card_link * card_link;
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struct pnp_id * id; /* supported EISA IDs*/
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int active;
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int capabilities;
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struct pnp_option * independent;
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struct pnp_option * dependent;
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struct pnp_resource_table res;
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char name[PNP_NAME_LEN]; /* contains a human-readable name */
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unsigned short regs; /* ISAPnP: supported registers */
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int flags; /* used by protocols */
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struct proc_dir_entry *procent; /* device entry in /proc/bus/isapnp */
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void *data;
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};
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#define global_to_pnp_dev(n) list_entry(n, struct pnp_dev, global_list)
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#define card_to_pnp_dev(n) list_entry(n, struct pnp_dev, card_list)
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#define protocol_to_pnp_dev(n) list_entry(n, struct pnp_dev, protocol_list)
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#define to_pnp_dev(n) container_of(n, struct pnp_dev, dev)
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#define pnp_for_each_dev(dev) \
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for((dev) = global_to_pnp_dev(pnp_global.next); \
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(dev) != global_to_pnp_dev(&pnp_global); \
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(dev) = global_to_pnp_dev((dev)->global_list.next))
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#define card_for_each_dev(card,dev) \
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for((dev) = card_to_pnp_dev((card)->devices.next); \
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(dev) != card_to_pnp_dev(&(card)->devices); \
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(dev) = card_to_pnp_dev((dev)->card_list.next))
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#define pnp_dev_name(dev) (dev)->name
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static inline void *pnp_get_drvdata (struct pnp_dev *pdev)
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{
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return dev_get_drvdata(&pdev->dev);
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}
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static inline void pnp_set_drvdata (struct pnp_dev *pdev, void *data)
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{
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dev_set_drvdata(&pdev->dev, data);
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}
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struct pnp_fixup {
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char id[7];
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void (*quirk_function)(struct pnp_dev *dev); /* fixup function */
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};
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/* config parameters */
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#define PNP_CONFIG_NORMAL 0x0001
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#define PNP_CONFIG_FORCE 0x0002 /* disables validity checking */
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/* capabilities */
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#define PNP_READ 0x0001
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#define PNP_WRITE 0x0002
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#define PNP_DISABLE 0x0004
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#define PNP_CONFIGURABLE 0x0008
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#define PNP_REMOVABLE 0x0010
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#define pnp_can_read(dev) (((dev)->protocol) && ((dev)->protocol->get) && \
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((dev)->capabilities & PNP_READ))
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#define pnp_can_write(dev) (((dev)->protocol) && ((dev)->protocol->set) && \
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((dev)->capabilities & PNP_WRITE))
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#define pnp_can_disable(dev) (((dev)->protocol) && ((dev)->protocol->disable) && \
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((dev)->capabilities & PNP_DISABLE))
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#define pnp_can_configure(dev) ((!(dev)->active) && \
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((dev)->capabilities & PNP_CONFIGURABLE))
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#ifdef CONFIG_ISAPNP
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extern struct pnp_protocol isapnp_protocol;
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#define pnp_device_is_isapnp(dev) ((dev)->protocol == (&isapnp_protocol))
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#else
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#define pnp_device_is_isapnp(dev) 0
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#endif
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#ifdef CONFIG_PNPBIOS
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extern struct pnp_protocol pnpbios_protocol;
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#define pnp_device_is_pnpbios(dev) ((dev)->protocol == (&pnpbios_protocol))
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#else
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#define pnp_device_is_pnpbios(dev) 0
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#endif
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/* status */
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#define PNP_READY 0x0000
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#define PNP_ATTACHED 0x0001
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#define PNP_BUSY 0x0002
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#define PNP_FAULTY 0x0004
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/* isapnp specific macros */
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#define isapnp_card_number(dev) ((dev)->card ? (dev)->card->number : -1)
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#define isapnp_csn_number(dev) ((dev)->number)
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/*
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* Driver Management
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*/
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struct pnp_id {
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char id[PNP_ID_LEN];
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struct pnp_id * next;
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};
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struct pnp_driver {
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char * name;
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const struct pnp_device_id *id_table;
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unsigned int flags;
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int (*probe) (struct pnp_dev *dev, const struct pnp_device_id *dev_id);
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void (*remove) (struct pnp_dev *dev);
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struct device_driver driver;
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};
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#define to_pnp_driver(drv) container_of(drv, struct pnp_driver, driver)
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struct pnp_card_driver {
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struct list_head global_list;
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char * name;
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const struct pnp_card_device_id *id_table;
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unsigned int flags;
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int (*probe) (struct pnp_card_link *card, const struct pnp_card_device_id *card_id);
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void (*remove) (struct pnp_card_link *card);
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struct pnp_driver link;
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};
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#define to_pnp_card_driver(drv) container_of(drv, struct pnp_card_driver, link)
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/* pnp driver flags */
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#define PNP_DRIVER_RES_DO_NOT_CHANGE 0x0001 /* do not change the state of the device */
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#define PNP_DRIVER_RES_DISABLE 0x0003 /* ensure the device is disabled */
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/*
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* Protocol Management
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*/
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struct pnp_protocol {
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struct list_head protocol_list;
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char * name;
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/* resource control functions */
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int (*get)(struct pnp_dev *dev, struct pnp_resource_table *res);
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int (*set)(struct pnp_dev *dev, struct pnp_resource_table *res);
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int (*disable)(struct pnp_dev *dev);
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/* used by pnp layer only (look but don't touch) */
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unsigned char number; /* protocol number*/
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struct device dev; /* link to driver model */
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struct list_head cards;
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struct list_head devices;
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};
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#define to_pnp_protocol(n) list_entry(n, struct pnp_protocol, protocol_list)
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#define protocol_for_each_card(protocol,card) \
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for((card) = protocol_to_pnp_card((protocol)->cards.next); \
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(card) != protocol_to_pnp_card(&(protocol)->cards); \
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(card) = protocol_to_pnp_card((card)->protocol_list.next))
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#define protocol_for_each_dev(protocol,dev) \
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for((dev) = protocol_to_pnp_dev((protocol)->devices.next); \
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(dev) != protocol_to_pnp_dev(&(protocol)->devices); \
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(dev) = protocol_to_pnp_dev((dev)->protocol_list.next))
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#if defined(CONFIG_PNP)
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/* device management */
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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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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_device_attach(struct pnp_dev *pnp_dev);
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void pnp_device_detach(struct pnp_dev *pnp_dev);
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extern struct list_head pnp_global;
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/* multidevice card support */
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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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int pnp_add_card_id(struct pnp_id *id, struct pnp_card *card);
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struct pnp_dev * pnp_request_card_device(struct pnp_card_link *clink, const char * id, struct pnp_dev * from);
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void pnp_release_card_device(struct pnp_dev * dev);
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int pnp_register_card_driver(struct pnp_card_driver * drv);
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void pnp_unregister_card_driver(struct pnp_card_driver * drv);
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extern struct list_head pnp_cards;
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/* resource management */
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struct pnp_option * pnp_register_independent_option(struct pnp_dev *dev);
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struct pnp_option * pnp_register_dependent_option(struct pnp_dev *dev, int priority);
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int pnp_register_irq_resource(struct pnp_option *option, struct pnp_irq *data);
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int pnp_register_dma_resource(struct pnp_option *option, struct pnp_dma *data);
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int pnp_register_port_resource(struct pnp_option *option, struct pnp_port *data);
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int pnp_register_mem_resource(struct pnp_option *option, struct pnp_mem *data);
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void pnp_init_resource_table(struct pnp_resource_table *table);
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int pnp_manual_config_dev(struct pnp_dev *dev, struct pnp_resource_table *res, int mode);
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int pnp_auto_config_dev(struct pnp_dev *dev);
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int pnp_validate_config(struct pnp_dev *dev);
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int pnp_activate_dev(struct pnp_dev *dev);
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int pnp_disable_dev(struct pnp_dev *dev);
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void pnp_resource_change(struct resource *resource, unsigned long start, unsigned long size);
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/* protocol helpers */
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int pnp_is_active(struct pnp_dev * dev);
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int compare_pnp_id(struct pnp_id * pos, const char * id);
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int pnp_add_id(struct pnp_id *id, struct pnp_dev *dev);
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int pnp_register_driver(struct pnp_driver *drv);
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void pnp_unregister_driver(struct pnp_driver *drv);
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#else
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/* device management */
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static inline int pnp_register_protocol(struct pnp_protocol *protocol) { return -ENODEV; }
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static inline void pnp_unregister_protocol(struct pnp_protocol *protocol) { }
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static inline int pnp_init_device(struct pnp_dev *dev) { return -ENODEV; }
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static inline int pnp_add_device(struct pnp_dev *dev) { return -ENODEV; }
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static inline void pnp_remove_device(struct pnp_dev *dev) { }
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static inline int pnp_device_attach(struct pnp_dev *pnp_dev) { return -ENODEV; }
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static inline void pnp_device_detach(struct pnp_dev *pnp_dev) { ; }
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/* multidevice card support */
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static inline int pnp_add_card(struct pnp_card *card) { return -ENODEV; }
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static inline void pnp_remove_card(struct pnp_card *card) { ; }
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static inline int pnp_add_card_device(struct pnp_card *card, struct pnp_dev *dev) { return -ENODEV; }
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static inline void pnp_remove_card_device(struct pnp_dev *dev) { ; }
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static inline int pnp_add_card_id(struct pnp_id *id, struct pnp_card *card) { return -ENODEV; }
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static inline struct pnp_dev * pnp_request_card_device(struct pnp_card_link *clink, const char * id, struct pnp_dev * from) { return NULL; }
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static inline void pnp_release_card_device(struct pnp_dev * dev) { ; }
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static inline int pnp_register_card_driver(struct pnp_card_driver * drv) { return -ENODEV; }
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static inline void pnp_unregister_card_driver(struct pnp_card_driver * drv) { ; }
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/* resource management */
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static inline struct pnp_option * pnp_register_independent_option(struct pnp_dev *dev) { return NULL; }
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static inline struct pnp_option * pnp_register_dependent_option(struct pnp_dev *dev, int priority) { return NULL; }
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static inline int pnp_register_irq_resource(struct pnp_option *option, struct pnp_irq *data) { return -ENODEV; }
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static inline int pnp_register_dma_resource(struct pnp_option *option, struct pnp_dma *data) { return -ENODEV; }
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static inline int pnp_register_port_resource(struct pnp_option *option, struct pnp_port *data) { return -ENODEV; }
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static inline int pnp_register_mem_resource(struct pnp_option *option, struct pnp_mem *data) { return -ENODEV; }
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static inline void pnp_init_resource_table(struct pnp_resource_table *table) { }
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static inline int pnp_manual_config_dev(struct pnp_dev *dev, struct pnp_resource_table *res, int mode) { return -ENODEV; }
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static inline int pnp_auto_config_dev(struct pnp_dev *dev) { return -ENODEV; }
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static inline int pnp_validate_config(struct pnp_dev *dev) { return -ENODEV; }
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static inline int pnp_activate_dev(struct pnp_dev *dev) { return -ENODEV; }
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static inline int pnp_disable_dev(struct pnp_dev *dev) { return -ENODEV; }
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static inline void pnp_resource_change(struct resource *resource, unsigned long start, unsigned long size) { }
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/* protocol helpers */
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static inline int pnp_is_active(struct pnp_dev * dev) { return 0; }
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static inline int compare_pnp_id(struct pnp_id * pos, const char * id) { return -ENODEV; }
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static inline int pnp_add_id(struct pnp_id *id, struct pnp_dev *dev) { return -ENODEV; }
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static inline int pnp_register_driver(struct pnp_driver *drv) { return -ENODEV; }
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static inline void pnp_unregister_driver(struct pnp_driver *drv) { ; }
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#endif /* CONFIG_PNP */
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#define pnp_err(format, arg...) printk(KERN_ERR "pnp: " format "\n" , ## arg)
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#define pnp_info(format, arg...) printk(KERN_INFO "pnp: " format "\n" , ## arg)
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#define pnp_warn(format, arg...) printk(KERN_WARNING "pnp: " format "\n" , ## arg)
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#ifdef CONFIG_PNP_DEBUG
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#define pnp_dbg(format, arg...) printk(KERN_DEBUG "pnp: " format "\n" , ## arg)
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#else
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#define pnp_dbg(format, arg...) do {} while (0)
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#endif
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#endif /* __KERNEL__ */
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#endif /* _LINUX_PNP_H */
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