23cbdcc971
This fixes a ubsan warning where it thinks you are walking off the end of a symbol. No functional change.
118 lines
2.7 KiB
C
118 lines
2.7 KiB
C
/*
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* Copyright (c) 2012 Corey Tabaka
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*
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* Use of this source code is governed by a MIT-style
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* license that can be found in the LICENSE file or at
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* https://opensource.org/licenses/MIT
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*/
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#include <dev/driver.h>
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#include <assert.h>
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#include <lk/err.h>
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#include <lk/trace.h>
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/* static list of devices constructed with DEVICE_INSTANCE macros */
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extern struct device __start_devices[] __WEAK;
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extern struct device __stop_devices[] __WEAK;
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status_t device_init_all(void) {
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status_t res = NO_ERROR;
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for (struct device *dev = __start_devices; dev != __stop_devices; dev++) {
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if (dev->flags & DEVICE_FLAG_AUTOINIT) {
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status_t code = device_init(dev);
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if (code < 0) {
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TRACEF("Driver init failed for driver \"%s\", device \"%s\", reason %d\n",
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dev->driver->type, dev->name, code);
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res = code;
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}
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}
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}
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return res;
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}
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status_t device_fini_all(void) {
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status_t res = NO_ERROR;
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for (struct device *dev = __start_devices; dev != __stop_devices; dev++) {
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status_t code = device_fini(dev);
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if (code < 0) {
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TRACEF("Driver fini failed for driver \"%s\", device \"%s\", reason %d\n",
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dev->driver->type, dev->name, code);
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res = code;
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}
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}
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return res;
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}
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status_t device_init(struct device *dev) {
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if (!dev)
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return ERR_INVALID_ARGS;
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DEBUG_ASSERT(dev->driver);
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const struct driver_ops *ops = dev->driver->ops;
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if (ops && ops->init) {
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dprintf(INFO, "dev: initializing device %s:%s\n", dev->driver->type, dev->name);
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status_t err = ops->init(dev);
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if (err < 0) {
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dev->device_state = DEVICE_INITIALIZED_FAILED;
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} else {
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dev->device_state = DEVICE_INITIALIZED;
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}
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return err;
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} else {
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return ERR_NOT_SUPPORTED;
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}
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}
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status_t device_fini(struct device *dev) {
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if (!dev)
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return ERR_INVALID_ARGS;
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DEBUG_ASSERT(dev->driver);
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const struct driver_ops *ops = dev->driver->ops;
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if (ops && ops->fini)
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return ops->fini(dev);
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else
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return ERR_NOT_SUPPORTED;
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}
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status_t device_suspend(struct device *dev) {
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if (!dev)
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return ERR_NOT_SUPPORTED;
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DEBUG_ASSERT(dev->driver);
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const struct driver_ops *ops = dev->driver->ops;
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if (ops && ops->suspend)
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return ops->suspend(dev);
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else
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return ERR_NOT_SUPPORTED;
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}
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status_t device_resume(struct device *dev) {
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if (!dev)
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return ERR_NOT_SUPPORTED;
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DEBUG_ASSERT(dev->driver);
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const struct driver_ops *ops = dev->driver->ops;
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if (ops && ops->resume)
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return ops->resume(dev);
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else
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return ERR_NOT_SUPPORTED;
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}
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