94 lines
2.8 KiB
C
94 lines
2.8 KiB
C
/* $NetBSD: qemufwcfg_fdt.c,v 1.1 2018/06/15 15:07:56 jakllsch Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2017 Jared McNeill <jmcneill@invisible.ca>
|
|
* 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 ``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 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/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: qemufwcfg_fdt.c,v 1.1 2018/06/15 15:07:56 jakllsch Exp $");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/device.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/mutex.h>
|
|
#include <sys/bus.h>
|
|
|
|
#include <dev/fdt/fdtvar.h>
|
|
|
|
#include <dev/ic/qemufwcfgvar.h>
|
|
|
|
static int fwcfg_fdt_match(device_t, cfdata_t, void *);
|
|
static void fwcfg_fdt_attach(device_t, device_t, void *);
|
|
|
|
CFATTACH_DECL_NEW(qemufwcfg_fdt, sizeof(struct fwcfg_softc),
|
|
fwcfg_fdt_match,
|
|
fwcfg_fdt_attach,
|
|
NULL,
|
|
NULL
|
|
);
|
|
|
|
static const char * const compatible[] = {
|
|
"qemu,fw-cfg-mmio",
|
|
NULL
|
|
};
|
|
|
|
|
|
static int
|
|
fwcfg_fdt_match(device_t parent, cfdata_t match, void *opaque)
|
|
{
|
|
struct fdt_attach_args * const faa = opaque;
|
|
|
|
return of_match_compatible(faa->faa_phandle, compatible);
|
|
}
|
|
|
|
static void
|
|
fwcfg_fdt_attach(device_t parent, device_t self, void *opaque)
|
|
{
|
|
struct fwcfg_softc *sc = device_private(self);
|
|
struct fdt_attach_args * const faa = opaque;
|
|
bus_addr_t base;
|
|
bus_size_t size;
|
|
|
|
if (fdtbus_get_reg(faa->faa_phandle, 0, &base, &size) != 0) {
|
|
aprint_error_dev(self, "couldn't get registers\n");
|
|
return;
|
|
}
|
|
|
|
sc->sc_dev = self;
|
|
sc->sc_bst = faa->faa_bst;
|
|
|
|
if (bus_space_map(sc->sc_bst, base, size, 0, &sc->sc_bsh) != 0) {
|
|
aprint_error_dev(self, "couldn't map registers\n");
|
|
return;
|
|
}
|
|
|
|
aprint_naive("\n");
|
|
aprint_normal("\n");
|
|
|
|
fwcfg_attach(sc);
|
|
|
|
pmf_device_register(self, NULL, NULL);
|
|
}
|