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/*-
* Copyright (C) 2017 Olivier Houchard
*
* 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/systm.h>
#include <sys/buf.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/proc.h>
#include <sys/smp.h>
#include "nvme_private.h"
static int nvme_ahci_probe(device_t dev);
static int nvme_ahci_attach(device_t dev);
static int nvme_ahci_detach(device_t dev);
static device_method_t nvme_ahci_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, nvme_ahci_probe),
DEVMETHOD(device_attach, nvme_ahci_attach),
DEVMETHOD(device_detach, nvme_ahci_detach),
DEVMETHOD(device_shutdown, nvme_shutdown),
{ 0, 0 }
};
static driver_t nvme_ahci_driver = {
"nvme",
nvme_ahci_methods,
sizeof(struct nvme_controller),
};
DRIVER_MODULE(nvme, ahci, nvme_ahci_driver, NULL, NULL);
static int
nvme_ahci_probe (device_t device)
{
return (0);
}
static int
nvme_ahci_attach(device_t dev)
{
struct nvme_controller*ctrlr = DEVICE2SOFTC(dev);
int ret;
/* Map MMIO registers */
ctrlr->resource_id = 0;
ctrlr->resource = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&ctrlr->resource_id, RF_ACTIVE);
if(ctrlr->resource == NULL) {
nvme_printf(ctrlr, "unable to allocate mem resource\n");
ret = ENOMEM;
goto bad;
}
ctrlr->bus_tag = rman_get_bustag(ctrlr->resource);
ctrlr->bus_handle = rman_get_bushandle(ctrlr->resource);
ctrlr->regs = (struct nvme_registers *)ctrlr->bus_handle;
/* Allocate and setup IRQ */
ctrlr->rid = 0;
ctrlr->res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
&ctrlr->rid, RF_SHAREABLE | RF_ACTIVE);
if (ctrlr->res == NULL) {
nvme_printf(ctrlr, "unable to allocate shared interrupt\n");
ret = ENOMEM;
goto bad;
}
ctrlr->msi_count = 0;
ctrlr->num_io_queues = 1;
if (bus_setup_intr(dev, ctrlr->res,
INTR_TYPE_MISC | INTR_MPSAFE, NULL, nvme_ctrlr_shared_handler,
ctrlr, &ctrlr->tag) != 0) {
nvme_printf(ctrlr, "unable to setup shared interrupt\n");
ret = ENOMEM;
goto bad;
}
ctrlr->tag = (void *)0x1;
/*
* We're attached via this funky mechanism. Flag the controller so that
* it avoids things that can't work when we do that, like asking for
* PCI config space entries.
*/
ctrlr->quirks |= QUIRK_AHCI;
return (nvme_attach(dev)); /* Note: failure frees resources */
bad:
if (ctrlr->resource != NULL) {
bus_release_resource(dev, SYS_RES_MEMORY,
ctrlr->resource_id, ctrlr->resource);
}
if (ctrlr->res)
bus_release_resource(ctrlr->dev, SYS_RES_IRQ,
rman_get_rid(ctrlr->res), ctrlr->res);
return (ret);
}
static int
nvme_ahci_detach(device_t dev)
{
return (nvme_detach(dev));
}
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