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/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (C) 2012-2014 Intel Corporation
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/param.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/module.h>
#include <vm/uma.h>
#include "nvme_private.h"
#include "nvme_if.h"
int32_t nvme_retry_count;
MALLOC_DEFINE(M_NVME, "nvme", "nvme(4) memory allocations");
int
nvme_shutdown(device_t dev)
{
struct nvme_controller *ctrlr;
ctrlr = DEVICE2SOFTC(dev);
nvme_ctrlr_shutdown(ctrlr);
return (0);
}
int
nvme_attach(device_t dev)
{
struct nvme_controller *ctrlr = DEVICE2SOFTC(dev);
int status;
status = nvme_ctrlr_construct(ctrlr, dev);
if (status != 0) {
nvme_ctrlr_destruct(ctrlr, dev);
return (status);
}
ctrlr->config_hook.ich_func = nvme_ctrlr_start_config_hook;
ctrlr->config_hook.ich_arg = ctrlr;
if (config_intrhook_establish(&ctrlr->config_hook) != 0)
return (ENOMEM);
return (0);
}
int
nvme_detach(device_t dev)
{
struct nvme_controller *ctrlr = DEVICE2SOFTC(dev);
int error;
config_intrhook_drain(&ctrlr->config_hook);
error = bus_generic_detach(dev);
if (error)
return (error);
nvme_ctrlr_destruct(ctrlr, dev);
return (0);
}
void
nvme_notify_async(struct nvme_controller *ctrlr,
const struct nvme_completion *async_cpl,
uint32_t log_page_id, void *log_page_buffer, uint32_t log_page_size)
{
device_t *children;
int n_children;
if (device_get_children(ctrlr->dev, &children, &n_children) != 0)
return;
for (int i = 0; i < n_children; i++)
NVME_HANDLE_AEN(children[i], async_cpl, log_page_id,
log_page_buffer, log_page_size);
free(children, M_TEMP);
}
void
nvme_notify_fail(struct nvme_controller *ctrlr)
{
device_t *children;
int n_children;
/*
* This controller failed during initialization (i.e. IDENTIFY
* command failed or timed out). Do not notify any nvme
* consumers of the failure here, since the consumer does not
* even know about the controller yet.
*/
if (!ctrlr->is_initialized)
return;
if (device_get_children(ctrlr->dev, &children, &n_children) != 0)
return;
for (int i = 0; i < n_children; i++)
NVME_CONTROLLER_FAILED(children[i]);
free(children, M_TEMP);
}
void
nvme_completion_poll_cb(void *arg, const struct nvme_completion *cpl)
{
struct nvme_completion_poll_status *status = arg;
/*
* Copy status into the argument passed by the caller, so that
* the caller can check the status to determine if the
* the request passed or failed.
*/
memcpy(&status->cpl, cpl, sizeof(*cpl));
atomic_store_rel_int(&status->done, 1);
}
static int
nvme_modevent(module_t mod __unused, int type __unused, void *argp __unused)
{
return (0);
}
static moduledata_t nvme_mod = {
"nvme",
nvme_modevent,
0
};
DECLARE_MODULE(nvme, nvme_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);
MODULE_VERSION(nvme, 1);
MODULE_DEPEND(nvme, cam, 1, 1, 1);
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