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Move portio back into x64 (Bareflank#522)
Rather than a generic portio interface for all architectures, with aarch64 implementing a MMIO-based fake portio, the one item that used portio generically (serial drivers) has been refactored to provide a generic implementation of its own IO which is conditionally compiled in whichever way is sensible for each architecture. Signed-off-by: Chris Pavlina <pavlinac@ainfosec.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,167 @@ | ||
| // | ||
| // Bareflank Hypervisor | ||
| // Copyright (C) 2017 Assured Information Security, Inc. | ||
| // | ||
| // This library is free software; you can redistribute it and/or | ||
| // modify it under the terms of the GNU Lesser General Public | ||
| // License as published by the Free Software Foundation; either | ||
| // version 2.1 of the License, or (at your option) any later version. | ||
| // | ||
| // This library is distributed in the hope that it will be useful, | ||
| // but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| // Lesser General Public License for more details. | ||
| // | ||
| // You should have received a copy of the GNU Lesser General Public | ||
| // License along with this library; if not, write to the Free Software | ||
| // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
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| #ifndef SERIAL_PORT_BASE_H | ||
| #define SERIAL_PORT_BASE_H | ||
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| #include <cstdint> | ||
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| #include <intrinsics/common.h> | ||
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| // ----------------------------------------------------------------------------- | ||
| // Exports | ||
| // ----------------------------------------------------------------------------- | ||
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| #include <bfexports.h> | ||
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| #ifndef STATIC_SERIAL | ||
| #ifdef SHARED_SERIAL | ||
| #define EXPORT_SERIAL EXPORT_SYM | ||
| #else | ||
| #define EXPORT_SERIAL IMPORT_SYM | ||
| #endif | ||
| #else | ||
| #define EXPORT_SERIAL | ||
| #endif | ||
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| #ifdef _MSC_VER | ||
| #pragma warning(push) | ||
| #pragma warning(disable : 4251) | ||
| #endif | ||
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| // ----------------------------------------------------------------------------- | ||
| // Definitions | ||
| // ----------------------------------------------------------------------------- | ||
|
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| /// Serial port base class | ||
| /// | ||
| /// This class provides an interface to the basic functions of a serial port, | ||
| /// and also provides abstracted IO functions to its subclasses. | ||
| /// | ||
| class EXPORT_SERIAL serial_port_base | ||
| { | ||
| public: | ||
| #if defined(BF_X64) | ||
| using port_type = x64::portio::port_addr_type; | ||
| using value_type_8 = x64::portio::port_8bit_type; | ||
| using value_type_32 = x64::portio::port_32bit_type; | ||
| #elif defined(BF_AARCH64) | ||
| using port_type = uintptr_t; | ||
| using value_type_8 = uint8_t; | ||
| using value_type_32 = uint32_t; | ||
| #else | ||
| # error "No serial port implementation for this architecture" | ||
| #endif | ||
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| public: | ||
| virtual ~serial_port_base() = default; | ||
|
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| /// Port | ||
| /// | ||
| /// @expects none | ||
| /// @ensures none | ||
| /// | ||
| /// @return the serial device's port | ||
| virtual port_type port() const noexcept = 0; | ||
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| /// Write Character | ||
| /// | ||
| /// Writes a character to the serial device. | ||
| /// | ||
| /// @expects none | ||
| /// @ensures none | ||
| /// | ||
| /// @param c character to write | ||
| /// | ||
| virtual void write(char c) noexcept = 0; | ||
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| /// Write String | ||
| /// | ||
| /// Writes a string to the serial device. | ||
| /// | ||
| /// @expects none | ||
| /// @ensures none | ||
| /// | ||
| /// @param str string to write | ||
| /// | ||
| virtual void write(const std::string &str) noexcept; | ||
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| /// Write String | ||
| /// | ||
| /// Writes a string to the serial device. | ||
| /// | ||
| /// @expects none | ||
| /// @ensures none | ||
| /// | ||
| /// @param str string to write | ||
| /// @param len length of the string to write | ||
| /// | ||
| virtual void write(const char *str, size_t len) noexcept; | ||
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| protected: | ||
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| /// Read 8 bits from IO | ||
| /// | ||
| /// Reads a value from IO. Implementation is architecture-dependent | ||
| /// | ||
| /// @expects none | ||
| /// @ensures none | ||
| /// | ||
| /// @param offset offset (in bytes) from the base address returned by port() | ||
| /// @return data loaded from the offset given | ||
| /// | ||
| value_type_8 offset_inb(port_type offset) const noexcept; | ||
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| /// Read 32 bits from IO | ||
| /// | ||
| /// Reads a value from IO. Implementation is architecture-dependent | ||
| /// | ||
| /// @expects none | ||
| /// @ensures none | ||
| /// | ||
| /// @param offset offset (in bytes) from the base address returned by port() | ||
| /// @return data loaded from the offset given | ||
| /// | ||
| value_type_32 offset_ind(port_type offset) const noexcept; | ||
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| /// Write 8 bits to IO | ||
| /// | ||
| /// Writes a value to IO. Implementation is architecture-dependent | ||
| /// | ||
| /// @expects none | ||
| /// @ensures none | ||
| /// | ||
| /// @param offset offset (in bytes) from the base address returned by port() | ||
| /// @param data value to write to the offset given | ||
| /// | ||
| void offset_outb(port_type offset, value_type_8 data) const noexcept; | ||
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| /// Write 32 bits to IO | ||
| /// | ||
| /// Writes a value to IO. Implementation is architecture-dependent | ||
| /// | ||
| /// @expects none | ||
| /// @ensures none | ||
| /// | ||
| /// @param offset offset (in bytes) from the base address returned by port() | ||
| /// @param data value to write to the offset given | ||
| /// | ||
| void offset_outd(port_type offset, value_type_32 data) const noexcept; | ||
| }; | ||
|
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| #endif |
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