59 lines
953 B
C
59 lines
953 B
C
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/* libbdev - driver endpoint management */
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#include <minix/drivers.h>
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#include <minix/bdev.h>
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#include <assert.h>
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#include "proto.h"
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static endpoint_t driver_endpt[NR_DEVICES];
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void bdev_driver_init(void)
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{
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/* Initialize the driver table.
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*/
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int i;
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for (i = 0; i < NR_DEVICES; i++)
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driver_endpt[i] = NONE;
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}
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void bdev_driver_clear(dev_t dev)
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{
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/* Clear information about a driver.
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*/
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int major;
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major = major(dev);
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assert(major >= 0 && major < NR_DEVICES);
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driver_endpt[major] = NONE;
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}
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void bdev_driver_set(dev_t dev, endpoint_t endpt)
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{
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/* Set the endpoint for a driver.
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*/
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int major;
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major = major(dev);
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assert(major >= 0 && major < NR_DEVICES);
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driver_endpt[major] = endpt;
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}
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endpoint_t bdev_driver_get(dev_t dev)
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{
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/* Return the endpoint for a driver, or NONE if we do not know its endpoint.
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*/
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int major;
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major = major(dev);
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assert(major >= 0 && major < NR_DEVICES);
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return driver_endpt[major];
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}
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