66 lines
1.6 KiB
C++
66 lines
1.6 KiB
C++
// devices.cpp
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// Device subsystem for HOS
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// Author: Josh Holtrop
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// Date: 05/11/05
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// Modified: 05/11/05
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#define _HOS_CPP_ _HOS_CPP_
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#include "hos_defines.h"
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#include "devices.h"
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#include "char/misc_char.h"
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#include "char/vconsole.h"
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DeviceDriver *drivers[256];
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int devices_init()
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{
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drivers[MAJOR_MISC_CHAR] = new MiscChar();
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drivers[MAJOR_VCONSOLE] = new VConsoleDriver();
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return 0;
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}
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int block_read(major_t major, minor_t minor, u32_t blockStart, u32_t blocks, void *buffer)
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{
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if (drivers[major & 0xFF])
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return drivers[major & 0xFF]->block_read(minor, blockStart, blocks, buffer);
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return DEV_INVALID_DEVICE;
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}
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int block_write(major_t major, minor_t minor, u32_t blockStart, u32_t blocks, void *buffer)
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{
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if (drivers[major & 0xFF])
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return drivers[major & 0xFF]->block_write(minor, blockStart, blocks, buffer);
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return DEV_INVALID_DEVICE;
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}
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int char_read(major_t major, minor_t minor)
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{
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if (drivers[major & 0xFF])
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return drivers[major & 0xFF]->char_read(minor);
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return DEV_INVALID_DEVICE;
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}
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int char_write(major_t major, minor_t minor, int c)
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{
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if (drivers[major & 0xFF])
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return drivers[major & 0xFF]->char_write(minor, c);
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return DEV_INVALID_DEVICE;
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}
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DeviceDriver::DeviceDriver() {}
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DeviceDriver::~DeviceDriver() {}
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int DeviceDriver::char_read(minor_t minor)
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{ return DEV_INVALID_ACCESS; }
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int DeviceDriver::char_write(minor_t minor, int c)
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{ return DEV_INVALID_ACCESS; }
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int DeviceDriver::block_read(minor_t minor, u32_t blockStart, u32_t blocks, void *buffer)
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{ return DEV_INVALID_ACCESS; }
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int DeviceDriver::block_write(minor_t minor, u32_t blockStart, u32_t blocks, void *buffer)
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{ return DEV_INVALID_ACCESS; }
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