What: /dev/fieldbus_devX
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Date: December 2018
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KernelVersion: 5.1 (staging)
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Contact: Sven Van Asbroeck <TheSven73@gmail.com>
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Description:
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The cdev interface to drivers for Fieldbus Device Memory
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(aka. Process Memory).
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The following file operations are supported:
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open(2)
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Create an I/O context associated with the file descriptor.
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read(2)
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Read from Process Memory's "read area".
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Clears POLLERR | POLLPRI from the file descriptor.
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write(2)
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Write to Process Memory's "write area".
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poll(2), select(2), epoll_wait(2) etc.
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When a "Process Memory Read Area Changed" event occurs,
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POLLERR | POLLPRI will be set on the file descriptor.
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Note that POLLIN | POLLOUT events are always set, because the
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process memory area is always readable and writable.
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close(2)
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Free up the I/O context that was associated
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with the file descriptor.
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Users: TBD
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