5ed5fddb7c
This commit removes APIs that were previously marked as deprecated. This change has the following implications: - The use of the global 'env()' accessor is not possible anymore. - Boolean accessor methods are no longer prefixed with 'is_'. E.g., instead of 'is_valid()', use 'valid()'. - The last traces of 'Ram_session' are gone now. The 'Env::ram()' accessor returns the 'Ram_allocator' interface, which is a subset of the 'Pd_session' interface. - All connection constructors need the 'Env' as argument. - The 'Reporter' constructor needs an 'Env' argument now because the reporter creates a report connection. - The old overload 'Child_policy::resolve_session_request' that returned a 'Service' does not exist anymore. - The base/printf.h header has been removed, use base/log.h instead. - The old notion of 'Signal_dispatcher' is gone. Use 'Signal_handler'. - Transitional headers like os/server.h, cap_session/, volatile_object.h, os/attached*_dataspace.h, signal_rpc_dispatcher.h have been removed. - The distinction between 'Thread_state' and 'Thread_state_base' does not exist anymore. - The header cpu_thread/capability.h along with the type definition of 'Cpu_thread_capability' has been removed. Use the type 'Thread_capability' define in cpu_session/cpu_session.h instead. - Several XML utilities (i.e., at os/include/decorator) could be removed because their functionality is nowadays covered by util/xml_node.h. - The 'os/ram_session_guard.h' has been removed. Use 'Constrained_ram_allocator' provided by base/ram_allocator.h instead. Issue #1987
91 lines
2.4 KiB
C++
91 lines
2.4 KiB
C++
/*
|
|
* \brief I/O MEM dataspace utility
|
|
* \author Norman Feske
|
|
* \date 2011-05-19
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2011-2017 Genode Labs GmbH
|
|
*
|
|
* This file is part of the Genode OS framework, which is distributed
|
|
* under the terms of the GNU Affero General Public License version 3.
|
|
*/
|
|
|
|
#ifndef _INCLUDE__BASE__ATTACHED_IO_MEM_DATASPACE_H_
|
|
#define _INCLUDE__BASE__ATTACHED_IO_MEM_DATASPACE_H_
|
|
|
|
#include <io_mem_session/connection.h>
|
|
#include <base/env.h>
|
|
|
|
namespace Genode { class Attached_io_mem_dataspace; }
|
|
|
|
|
|
/**
|
|
* Request and locally attach a memory-mapped I/O resource
|
|
*
|
|
* This class is a wrapper for a typical sequence of operations performed
|
|
* by device drivers to access memory-mapped device resources. Its sole
|
|
* purpose is to avoid duplicated code.
|
|
*/
|
|
class Genode::Attached_io_mem_dataspace
|
|
{
|
|
private:
|
|
|
|
Region_map &_env_rm;
|
|
Io_mem_connection _mmio;
|
|
Io_mem_dataspace_capability _ds;
|
|
Region_map::Local_addr _local_addr;
|
|
|
|
static void *_with_sub_page_offset(void *local, addr_t io_base)
|
|
{
|
|
return (void *)((addr_t)local | (io_base & (addr_t)0xfff));
|
|
}
|
|
|
|
public:
|
|
|
|
/**
|
|
* Constructor
|
|
*
|
|
* \param base base address of memory-mapped I/O resource
|
|
* \param size size of resource
|
|
* \param write_combined enable write combining for the resource
|
|
*
|
|
* \throw Service_denied
|
|
* \throw Insufficient_ram_quota
|
|
* \throw Insufficient_cap_quota
|
|
* \throw Out_of_ram
|
|
* \throw Out_of_caps
|
|
* \throw Region_map::Region_conflict
|
|
* \throw Region_map::Invalid_dataspace
|
|
*/
|
|
Attached_io_mem_dataspace(Env &env, Genode::addr_t base, Genode::size_t size,
|
|
bool write_combined = false)
|
|
:
|
|
_env_rm(env.rm()),
|
|
_mmio(env, base, size, write_combined),
|
|
_ds(_mmio.dataspace()),
|
|
_local_addr(_with_sub_page_offset(env.rm().attach(_ds), base))
|
|
{ }
|
|
|
|
/**
|
|
* Destructor
|
|
*/
|
|
~Attached_io_mem_dataspace() { _env_rm.detach(_local_addr); }
|
|
|
|
/**
|
|
* Return capability of the used RAM dataspace
|
|
*/
|
|
Io_mem_dataspace_capability cap() { return _ds; }
|
|
|
|
/**
|
|
* Request local address
|
|
*
|
|
* This is a template to avoid inconvenient casts at the caller.
|
|
* A newly allocated I/O MEM dataspace is untyped memory anyway.
|
|
*/
|
|
template <typename T>
|
|
T *local_addr() { return static_cast<T *>(_local_addr); }
|
|
};
|
|
|
|
#endif /* _INCLUDE__BASE__ATTACHED_IO_MEM_DATASPACE_H_ */
|