mirror of
https://github.com/ipxe/ipxe
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1266d7902b
Intel's C compiler (icc) chokes on the zero-length arrays that we currently use as part of the mechanism for accessing linker table entries. Abstract away the zero-length arrays, to make a port to icc easier. Introduce macros such as for_each_table_entry() to simplify the common case of iterating over all entries in a linker table. Represent table names as #defined string constants rather than unquoted literals; this avoids visual confusion between table names and C variable or type names, and also allows us to force a compilation error in the event of incorrect table names.
112 lines
2.0 KiB
C
112 lines
2.0 KiB
C
#ifndef _GPXE_DEVICE_H
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#define _GPXE_DEVICE_H
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/**
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* @file
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*
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* Device model
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*
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*/
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#include <gpxe/list.h>
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#include <gpxe/tables.h>
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/** A hardware device description */
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struct device_description {
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/** Bus type
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*
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* This must be a BUS_TYPE_XXX constant.
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*/
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unsigned int bus_type;
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/** Location
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*
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* The interpretation of this field is bus-type-specific.
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*/
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unsigned int location;
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/** Vendor ID */
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unsigned int vendor;
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/** Device ID */
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unsigned int device;
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/** Device class */
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unsigned long class;
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/** I/O address */
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unsigned long ioaddr;
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/** IRQ */
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unsigned int irq;
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};
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/** PCI bus type */
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#define BUS_TYPE_PCI 1
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/** ISAPnP bus type */
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#define BUS_TYPE_ISAPNP 2
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/** EISA bus type */
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#define BUS_TYPE_EISA 3
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/** MCA bus type */
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#define BUS_TYPE_MCA 4
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/** ISA bus type */
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#define BUS_TYPE_ISA 5
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/** A hardware device */
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struct device {
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/** Name */
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char name[16];
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/** Device description */
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struct device_description desc;
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/** Devices on the same bus */
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struct list_head siblings;
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/** Devices attached to this device */
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struct list_head children;
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/** Bus device */
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struct device *parent;
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};
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/**
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* A root device
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*
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* Root devices are system buses such as PCI, EISA, etc.
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*
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*/
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struct root_device {
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/** Device chain
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*
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* A root device has a NULL parent field.
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*/
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struct device dev;
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/** Root device driver */
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struct root_driver *driver;
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};
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/** A root device driver */
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struct root_driver {
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/**
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* Add root device
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*
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* @v rootdev Root device
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* @ret rc Return status code
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*
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* Called from probe_devices() for all root devices in the build.
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*/
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int ( * probe ) ( struct root_device *rootdev );
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/**
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* Remove root device
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*
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* @v rootdev Root device
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*
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* Called from remove_device() for all successfully-probed
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* root devices.
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*/
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void ( * remove ) ( struct root_device *rootdev );
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};
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/** Root device table */
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#define ROOT_DEVICES "root_devices"
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/** Declare a root device */
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#define __root_device __table ( struct root_device, ROOT_DEVICES, 01 )
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#endif /* _GPXE_DEVICE_H */
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