mirror of
https://github.com/Fennix-Project/Drivers.git
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86 lines
2.3 KiB
C
86 lines
2.3 KiB
C
/*
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This file is part of Fennix Drivers.
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Fennix Drivers is free software: you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation, either version 3 of
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the License, or (at your option) any later version.
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Fennix Drivers is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Fennix Drivers. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <driver.h>
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#include <errno.h>
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extern __driverAPI *API;
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int DriverEntry();
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int DriverFinal();
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int DriverPanic();
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int DriverProbe();
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void __IdentifyDriver(
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dev_t ID,
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int (*GetDriverInfo)(dev_t, const char *, const char *,
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const char *, const char *, const char *));
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typedef void (*CallPtr)(void);
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extern CallPtr __init_array_start[0], __init_array_end[0];
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extern CallPtr __fini_array_start[0], __fini_array_end[0];
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int _entry()
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{
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for (CallPtr *func = __init_array_start; func != __init_array_end; func++)
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(*func)();
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return DriverEntry();
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}
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int _final()
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{
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int err = DriverFinal();
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for (CallPtr *func = __fini_array_start; func != __fini_array_end; func++)
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(*func)();
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return err;
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}
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#define API_MajorRequiredVersion 0
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#define API_MinorRequiredVersion 0
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#define API_PatchRequiredVersion 0
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int _start(__driverAPI *__API)
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{
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if (unlikely(__API == NULL))
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return -EINVAL;
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if (unlikely(__API->APIVersion.Major != API_MajorRequiredVersion ||
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__API->APIVersion.Minor != API_MinorRequiredVersion ||
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__API->APIVersion.Patch != API_PatchRequiredVersion))
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return -EPROTO;
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if (unlikely(__API->RegisterFunction == NULL))
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return -ENOSYS;
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if (unlikely(DriverEntry == NULL ||
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DriverFinal == NULL ||
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DriverPanic == NULL ||
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DriverProbe == NULL ||
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__IdentifyDriver == NULL))
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return -EFAULT;
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API = __API;
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__API->RegisterFunction(__API->MajorID, _entry, _drf_Entry);
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__API->RegisterFunction(__API->MajorID, _final, _drf_Final);
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__API->RegisterFunction(__API->MajorID, DriverPanic, _drf_Panic);
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__API->RegisterFunction(__API->MajorID, DriverProbe, _drf_Probe);
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__IdentifyDriver(__API->MajorID, __API->GetDriverInfo);
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return 0;
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}
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