descriptor.hxx

// dawn/include/dawn/io/descriptor.hxx
//
// SPDX-License-Identifier: Apache-2.0
//
 
#pragma once
 
#include "dawn/dev/descriptor.hxx"
#include "dawn/io/common.hxx"
#include "dawn/porting/config.hxx"
 
namespace dawn
{
class CIODescriptor : public CIOCommon
{
public:
  enum
  {
    IO_DESCRIPTOR_CFG_FIRST = 0,
    IO_DESCRIPTOR_CFG_LAST = 31
  };
 
  explicit CIODescriptor(CDescObject &desc)
    : CIOCommon(desc)
  {
  }
 
  ~CIODescriptor() override;
 
#ifdef CONFIG_DAWN_OBJECT_HAS_NAME
  const char *getClassNameStr() const override
  {
    return "descriptor";
  }
#endif
 
  int configure() override;
  int deinit() override;
  int getDataImpl(IODataCmn &data, size_t len) override;
  int setDataImpl(IODataCmn &data) override;
  int setDataAtImpl(IODataCmn &data, size_t offset) override;
  int getDataAtImpl(IODataCmn &data, size_t len, size_t offset) override;
 
#ifdef CONFIG_DAWN_IO_NOTIFY
  int getFd() const override;
#endif
 
  size_t getDataSize() const override;
  size_t getDataDim() const override;
 
  bool isRead() const override
  {
    return true;
  };
 
  bool isWrite() const override
  {
    return getCmnDevno() != 0;
  };
 
  bool isNotify() const override
  {
    return true;
  };
 
  bool isBatch() const override
  {
    return false;
  };
 
  bool isSeekable() const override
  {
    return true;
  }
 
  using ObjectIdHelper =
    CIOCommon::IOObjectIdHelperNoTS<IO_CLASS_DESCRIPTOR, SObjectId::DTYPE_BLOCK>;
 
  constexpr static SObjectId::ObjectId objectId(uint16_t inst)
  {
    return ObjectIdHelper::create(inst);
  }
 
private:
  CDevDescriptor::SDescriptorReg regDesc = {}; 
 
  int configureDesc(const CDescObject &desc);
};
} // Namespace dawn