153 lines
3.8 KiB
C
153 lines
3.8 KiB
C
/*
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* Copyright (C) 2010 Piotr Jaroszyński <p.jaroszynski@gmail.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef _IPXE_LINUX_H
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#define _IPXE_LINUX_H
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FILE_LICENCE(GPL2_OR_LATER);
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/** @file
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*
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* Linux devices, drivers and device requests.
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*/
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#include <ipxe/list.h>
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#include <ipxe/device.h>
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#include <ipxe/settings.h>
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/**
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* Convert a Linux error number to an iPXE status code
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*
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* @v errno Linux error number
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* @ret rc iPXE status code (before negation)
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*/
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#define ELINUX( errno ) EPLATFORM ( EINFO_EPLATFORM, errno )
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/** A linux device */
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struct linux_device {
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/** Generic device */
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struct device dev;
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/** Driver that's handling the device */
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struct linux_driver *driver;
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/** Private data used by drivers */
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void *priv;
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};
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struct linux_device_request;
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/** A linux driver */
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struct linux_driver {
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/** Name */
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char *name;
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/** Probe function */
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int (*probe)(struct linux_device *device, struct linux_device_request *request);
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/** Remove function */
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void (*remove)(struct linux_device *device);
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/** Can the driver probe any more devices? */
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int can_probe;
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};
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/** Linux driver table */
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#define LINUX_DRIVERS __table(struct linux_driver, "linux_drivers")
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/** Declare a Linux driver */
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#define __linux_driver __table_entry(LINUX_DRIVERS, 01)
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/**
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* Set linux device driver-private data
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*
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* @v device Linux device
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* @v priv Private data
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*/
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static inline void linux_set_drvdata(struct linux_device * device, void *priv)
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{
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device->priv = priv;
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}
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/**
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* Get linux device driver-private data
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*
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* @v device Linux device
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* @ret priv Private data
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*/
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static inline void *linux_get_drvdata(struct linux_device *device)
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{
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return device->priv;
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}
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/**
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* A device request.
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*
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* To be created and filled by the UI code.
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*/
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struct linux_device_request {
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/** Driver name. Compared to the linux drivers' names */
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char *driver;
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/** List node */
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struct list_head list;
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/** List of settings */
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struct list_head settings;
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};
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/** A device request setting */
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struct linux_setting {
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/** Name */
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char *name;
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/** Value */
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char *value;
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/** Was the setting already applied? */
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int applied;
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/** List node */
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struct list_head list;
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};
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/**
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* List of requested devices.
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*
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* Filled by the UI code. Linux root_driver walks over this list looking for an
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* appropriate driver to handle each request by matching the driver's name.
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*/
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extern struct list_head linux_device_requests;
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/**
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* List of global settings to apply.
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*
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* Filled by the UI code. Linux root_driver applies these settings.
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*/
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extern struct list_head linux_global_settings;
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/**
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* Look for the last occurrence of a setting with the specified name
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*
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* @v name Name of the setting to look for
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* @v settings List of the settings to look through
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*/
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struct linux_setting *linux_find_setting(char *name, struct list_head *settings);
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/**
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* Apply a list of linux settings to a settings block
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*
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* @v new_settings List of linux_setting's to apply
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* @v settings_block Settings block to apply the settings to
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* @ret rc 0 on success
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*/
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extern void linux_apply_settings(struct list_head *new_settings, struct settings *settings_block);
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#endif /* _IPXE_LINUX_H */
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