12d3f1b38SRuslan Bukin /*-
22d3f1b38SRuslan Bukin * Copyright (c) 2014 Ruslan Bukin <br@bsdpad.com>
32d3f1b38SRuslan Bukin * All rights reserved.
42d3f1b38SRuslan Bukin *
52d3f1b38SRuslan Bukin * This software was developed by SRI International and the University of
62d3f1b38SRuslan Bukin * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
72d3f1b38SRuslan Bukin * ("CTSRD"), as part of the DARPA CRASH research programme.
82d3f1b38SRuslan Bukin *
92d3f1b38SRuslan Bukin * Redistribution and use in source and binary forms, with or without
102d3f1b38SRuslan Bukin * modification, are permitted provided that the following conditions
112d3f1b38SRuslan Bukin * are met:
122d3f1b38SRuslan Bukin * 1. Redistributions of source code must retain the above copyright
132d3f1b38SRuslan Bukin * notice, this list of conditions and the following disclaimer.
142d3f1b38SRuslan Bukin * 2. Redistributions in binary form must reproduce the above copyright
152d3f1b38SRuslan Bukin * notice, this list of conditions and the following disclaimer in the
162d3f1b38SRuslan Bukin * documentation and/or other materials provided with the distribution.
172d3f1b38SRuslan Bukin *
182d3f1b38SRuslan Bukin * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
192d3f1b38SRuslan Bukin * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
202d3f1b38SRuslan Bukin * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
212d3f1b38SRuslan Bukin * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
222d3f1b38SRuslan Bukin * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
232d3f1b38SRuslan Bukin * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
242d3f1b38SRuslan Bukin * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
252d3f1b38SRuslan Bukin * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
262d3f1b38SRuslan Bukin * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
272d3f1b38SRuslan Bukin * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
282d3f1b38SRuslan Bukin * SUCH DAMAGE.
292d3f1b38SRuslan Bukin */
302d3f1b38SRuslan Bukin
312d3f1b38SRuslan Bukin /*
322d3f1b38SRuslan Bukin * BERI memory interface.
332d3f1b38SRuslan Bukin */
342d3f1b38SRuslan Bukin
352d3f1b38SRuslan Bukin #include <sys/param.h>
362d3f1b38SRuslan Bukin #include <sys/systm.h>
372d3f1b38SRuslan Bukin #include <sys/bus.h>
382d3f1b38SRuslan Bukin #include <sys/kernel.h>
392d3f1b38SRuslan Bukin #include <sys/module.h>
402d3f1b38SRuslan Bukin #include <sys/malloc.h>
412d3f1b38SRuslan Bukin #include <sys/rman.h>
422d3f1b38SRuslan Bukin #include <sys/timeet.h>
432d3f1b38SRuslan Bukin #include <sys/timetc.h>
442d3f1b38SRuslan Bukin #include <sys/conf.h>
452d3f1b38SRuslan Bukin #include <sys/uio.h>
462d3f1b38SRuslan Bukin
472d3f1b38SRuslan Bukin #include <dev/fdt/fdt_common.h>
482d3f1b38SRuslan Bukin #include <dev/ofw/openfirm.h>
492d3f1b38SRuslan Bukin #include <dev/ofw/ofw_bus.h>
502d3f1b38SRuslan Bukin #include <dev/ofw/ofw_bus_subr.h>
512d3f1b38SRuslan Bukin
522d3f1b38SRuslan Bukin #include <machine/bus.h>
532d3f1b38SRuslan Bukin #include <machine/fdt.h>
542d3f1b38SRuslan Bukin #include <machine/cpu.h>
552d3f1b38SRuslan Bukin #include <machine/intr.h>
562d3f1b38SRuslan Bukin
572d3f1b38SRuslan Bukin struct beri_mem_softc {
582d3f1b38SRuslan Bukin struct resource *res[1];
592d3f1b38SRuslan Bukin struct cdev *mem_cdev;
602d3f1b38SRuslan Bukin device_t dev;
612d3f1b38SRuslan Bukin int mem_size;
622d3f1b38SRuslan Bukin int mem_start;
632d3f1b38SRuslan Bukin };
642d3f1b38SRuslan Bukin
652d3f1b38SRuslan Bukin static struct resource_spec beri_mem_spec[] = {
662d3f1b38SRuslan Bukin { SYS_RES_MEMORY, 0, RF_ACTIVE },
672d3f1b38SRuslan Bukin { -1, 0 }
682d3f1b38SRuslan Bukin };
692d3f1b38SRuslan Bukin
702d3f1b38SRuslan Bukin static int
mem_open(struct cdev * dev,int flags __unused,int fmt __unused,struct thread * td __unused)712d3f1b38SRuslan Bukin mem_open(struct cdev *dev, int flags __unused,
722d3f1b38SRuslan Bukin int fmt __unused, struct thread *td __unused)
732d3f1b38SRuslan Bukin {
742d3f1b38SRuslan Bukin struct beri_mem_softc *sc;
752d3f1b38SRuslan Bukin
762d3f1b38SRuslan Bukin sc = dev->si_drv1;
772d3f1b38SRuslan Bukin
782d3f1b38SRuslan Bukin return (0);
792d3f1b38SRuslan Bukin }
802d3f1b38SRuslan Bukin
812d3f1b38SRuslan Bukin static int
mem_close(struct cdev * dev,int flags __unused,int fmt __unused,struct thread * td __unused)822d3f1b38SRuslan Bukin mem_close(struct cdev *dev, int flags __unused,
832d3f1b38SRuslan Bukin int fmt __unused, struct thread *td __unused)
842d3f1b38SRuslan Bukin {
852d3f1b38SRuslan Bukin struct beri_mem_softc *sc;
862d3f1b38SRuslan Bukin
872d3f1b38SRuslan Bukin sc = dev->si_drv1;
882d3f1b38SRuslan Bukin
892d3f1b38SRuslan Bukin return (0);
902d3f1b38SRuslan Bukin }
912d3f1b38SRuslan Bukin
922d3f1b38SRuslan Bukin static int
mem_ioctl(struct cdev * dev,u_long cmd,caddr_t addr,int flags,struct thread * td)932d3f1b38SRuslan Bukin mem_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flags,
942d3f1b38SRuslan Bukin struct thread *td)
952d3f1b38SRuslan Bukin {
962d3f1b38SRuslan Bukin
972d3f1b38SRuslan Bukin return (0);
982d3f1b38SRuslan Bukin }
992d3f1b38SRuslan Bukin
1002d3f1b38SRuslan Bukin static int
mem_mmap(struct cdev * dev,vm_ooffset_t offset,vm_paddr_t * paddr,int nprot,vm_memattr_t * memattr)1012d3f1b38SRuslan Bukin mem_mmap(struct cdev *dev, vm_ooffset_t offset, vm_paddr_t *paddr, int nprot,
1022d3f1b38SRuslan Bukin vm_memattr_t *memattr)
1032d3f1b38SRuslan Bukin {
1042d3f1b38SRuslan Bukin struct beri_mem_softc *sc;
1052d3f1b38SRuslan Bukin
1062d3f1b38SRuslan Bukin sc = dev->si_drv1;
1072d3f1b38SRuslan Bukin
1082d3f1b38SRuslan Bukin if (offset < sc->mem_size) {
1092d3f1b38SRuslan Bukin *paddr = sc->mem_start + offset;
1102d3f1b38SRuslan Bukin return (0);
1112d3f1b38SRuslan Bukin }
1122d3f1b38SRuslan Bukin
1132d3f1b38SRuslan Bukin return (EINVAL);
1142d3f1b38SRuslan Bukin }
1152d3f1b38SRuslan Bukin
1162d3f1b38SRuslan Bukin static struct cdevsw mem_cdevsw = {
1172d3f1b38SRuslan Bukin .d_version = D_VERSION,
1182d3f1b38SRuslan Bukin .d_open = mem_open,
1192d3f1b38SRuslan Bukin .d_close = mem_close,
1202d3f1b38SRuslan Bukin .d_ioctl = mem_ioctl,
1212d3f1b38SRuslan Bukin .d_mmap = mem_mmap,
1222d3f1b38SRuslan Bukin .d_name = "BERI memory",
1232d3f1b38SRuslan Bukin };
1242d3f1b38SRuslan Bukin
1252d3f1b38SRuslan Bukin static int
beri_mem_probe(device_t dev)1262d3f1b38SRuslan Bukin beri_mem_probe(device_t dev)
1272d3f1b38SRuslan Bukin {
1282d3f1b38SRuslan Bukin
1292d3f1b38SRuslan Bukin if (!ofw_bus_status_okay(dev))
1302d3f1b38SRuslan Bukin return (ENXIO);
1312d3f1b38SRuslan Bukin
1322d3f1b38SRuslan Bukin if (!ofw_bus_is_compatible(dev, "sri-cambridge,beri-mem"))
1332d3f1b38SRuslan Bukin return (ENXIO);
1342d3f1b38SRuslan Bukin
1352d3f1b38SRuslan Bukin device_set_desc(dev, "BERI memory");
1362d3f1b38SRuslan Bukin return (BUS_PROBE_DEFAULT);
1372d3f1b38SRuslan Bukin }
1382d3f1b38SRuslan Bukin
1392d3f1b38SRuslan Bukin static int
beri_mem_attach(device_t dev)1402d3f1b38SRuslan Bukin beri_mem_attach(device_t dev)
1412d3f1b38SRuslan Bukin {
1422d3f1b38SRuslan Bukin struct beri_mem_softc *sc;
1432d3f1b38SRuslan Bukin
1442d3f1b38SRuslan Bukin sc = device_get_softc(dev);
1452d3f1b38SRuslan Bukin sc->dev = dev;
1462d3f1b38SRuslan Bukin
1472d3f1b38SRuslan Bukin if (bus_alloc_resources(dev, beri_mem_spec, sc->res)) {
1482d3f1b38SRuslan Bukin device_printf(dev, "could not allocate resources\n");
1492d3f1b38SRuslan Bukin return (ENXIO);
1502d3f1b38SRuslan Bukin }
1512d3f1b38SRuslan Bukin
1522d3f1b38SRuslan Bukin /* Memory info */
1532d3f1b38SRuslan Bukin sc->mem_size = rman_get_size(sc->res[0]);
1542d3f1b38SRuslan Bukin sc->mem_start = rman_get_start(sc->res[0]);
1552d3f1b38SRuslan Bukin
1562d3f1b38SRuslan Bukin sc->mem_cdev = make_dev(&mem_cdevsw, 0, UID_ROOT, GID_WHEEL,
1572d3f1b38SRuslan Bukin 0600, "beri_mem");
1582d3f1b38SRuslan Bukin
1592d3f1b38SRuslan Bukin if (sc->mem_cdev == NULL) {
1602d3f1b38SRuslan Bukin device_printf(dev, "Failed to create character device.\n");
1612d3f1b38SRuslan Bukin return (ENXIO);
1622d3f1b38SRuslan Bukin }
1632d3f1b38SRuslan Bukin
1642d3f1b38SRuslan Bukin sc->mem_cdev->si_drv1 = sc;
1652d3f1b38SRuslan Bukin
1662d3f1b38SRuslan Bukin return (0);
1672d3f1b38SRuslan Bukin }
1682d3f1b38SRuslan Bukin
1692d3f1b38SRuslan Bukin static device_method_t beri_mem_methods[] = {
1702d3f1b38SRuslan Bukin DEVMETHOD(device_probe, beri_mem_probe),
1712d3f1b38SRuslan Bukin DEVMETHOD(device_attach, beri_mem_attach),
1722d3f1b38SRuslan Bukin { 0, 0 }
1732d3f1b38SRuslan Bukin };
1742d3f1b38SRuslan Bukin
1752d3f1b38SRuslan Bukin static driver_t beri_mem_driver = {
1762d3f1b38SRuslan Bukin "beri_mem",
1772d3f1b38SRuslan Bukin beri_mem_methods,
1782d3f1b38SRuslan Bukin sizeof(struct beri_mem_softc),
1792d3f1b38SRuslan Bukin };
1802d3f1b38SRuslan Bukin
1812ded2b9aSJohn Baldwin DRIVER_MODULE(beri_mem, simplebus, beri_mem_driver, 0, 0);
182