mirror of
https://github.com/open-simh/simtools.git
synced 2026-04-26 20:16:36 +00:00
b70fc2f639
This version was on the VMS FREEWARE disk at some point. It shipped with the included .exes, though modern windows systems certainly don't support the direct access to SCSI DLL that's used.
45 lines
1.9 KiB
C
45 lines
1.9 KiB
C
/* Phyio.h v1.2-2 Definition of Physical I/O routines */
|
|
|
|
/*
|
|
This is part of ODS2 written by Paul Nankervis,
|
|
email address: Paulnank@au1.ibm.com
|
|
|
|
ODS2 is distributed freely for all members of the
|
|
VMS community to use. However all derived works
|
|
must maintain comments in their source to acknowledge
|
|
the contibution of the original author.
|
|
*/
|
|
|
|
/* To set up physical I/O for a new system a group of phyio
|
|
routines need to be set up. They are:-
|
|
phyio_show() which doesn't need to do anything - but
|
|
it would generally print some statistics
|
|
about the other phyio calls.
|
|
phyio_init() to prepare a device for use by future
|
|
read/write calls. The device name would usually
|
|
map to a local device - for example rra: to /dev/rra
|
|
on a Unix system. The call needs to return a handle
|
|
(channel, file handle, reference number...) for
|
|
future reference, and optionally some device
|
|
information.
|
|
phyio_read() will return a specified number of bytes into a
|
|
buffer from the start of a 512 byte block on the
|
|
device referred to by the handle.
|
|
phyio_write() will write a number of bytes out to a 512 byte block
|
|
address on a device.
|
|
|
|
*/
|
|
|
|
#define PHYIO_READONLY 1
|
|
|
|
struct phyio_info {
|
|
unsigned status;
|
|
unsigned sectors;
|
|
unsigned sectorsize;
|
|
};
|
|
|
|
void phyio_show(void);
|
|
unsigned phyio_init(int devlen,char *devnam,unsigned *handle,struct phyio_info *info);
|
|
unsigned phyio_read(unsigned handle,unsigned block,unsigned length,char *buffer);
|
|
unsigned phyio_write(unsigned handle,unsigned block,unsigned length,char *buffer);
|