io.h

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/*
 * (c) 2008-2010 Adam Lackorzynski <adam@os.inf.tu-dresden.de>,
 *               Alexander Warg <warg@os.inf.tu-dresden.de>
 *     economic rights: Technische Universität Dresden (Germany)
 * License: see LICENSE.spdx (in this directory or the directories above)
 */
 
 
#pragma once
 
#include <l4/sys/types.h>
#include <l4/sys/linkage.h>
#include <l4/io/types.h>
 
__BEGIN_DECLS
 
L4_CV long L4_EXPORT
l4io_request_irq(int irqnum, l4_cap_idx_t irqcap);
 
L4_CV l4_cap_idx_t L4_EXPORT
l4io_request_icu(void);
 
L4_CV long L4_EXPORT
l4io_release_irq(int irqnum, l4_cap_idx_t irq_cap);
 
L4_CV long L4_EXPORT
l4io_request_iomem(l4_addr_t phys, unsigned long size, int flags,
                   l4_addr_t *virt);
 
L4_CV long L4_EXPORT
l4io_request_iomem_region(l4_addr_t phys, l4_addr_t virt,
                          unsigned long size, int flags);
 
L4_CV long L4_EXPORT
l4io_release_iomem(l4_addr_t virt, unsigned long size);
 
L4_CV long L4_EXPORT
l4io_request_ioport(unsigned portnum, unsigned len);
 
L4_CV long L4_EXPORT
l4io_release_ioport(unsigned portnum, unsigned len);
 
 
/* -------------- Device handling --------------------- */
 
L4_INLINE
l4io_device_handle_t l4io_get_root_device(void);
 
L4_CV int L4_EXPORT
l4io_iterate_devices(l4io_device_handle_t *devhandle,
                     l4io_device_t *dev, l4io_resource_handle_t *reshandle);
 
L4_CV int L4_EXPORT
l4io_lookup_device(const char *devname,
                   l4io_device_handle_t *dev_handle,
                   l4io_device_t *dev, l4io_resource_handle_t *res_handle);
 
L4_CV int L4_EXPORT
l4io_lookup_resource(l4io_device_handle_t devhandle,
                     enum l4io_resource_types_t type,
                     l4io_resource_handle_t *reshandle,
                     l4io_resource_t *res);
 
 
/* --------------- Convenience functions ----------------- */
 
L4_CV l4_addr_t L4_EXPORT
l4io_request_resource_iomem(l4io_device_handle_t devhandle,
                            l4io_resource_handle_t *reshandle);
 
L4_CV void L4_EXPORT
l4io_request_all_ioports(void (*res_cb)(l4vbus_resource_t const *res));
 
L4_CV int L4_EXPORT
l4io_has_resource(enum l4io_resource_types_t type,
                  l4vbus_paddr_t start, l4vbus_paddr_t end);
 
/* ------------------------------------------------------- */
/* Implementations */
 
L4_INLINE
l4io_device_handle_t l4io_get_root_device(void)
{ return 0; }
l4io_device_handle_t l4io_get_root_device(void) {…}
 
__END_DECLS