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head/sys/dev/xdma/xdma_fdt_test.c
Property | Old Value | New Value |
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svn:eol-style | null | native \ No newline at end of property |
svn:keywords | null | FreeBSD=%H \ No newline at end of property |
svn:mime-type | null | text/plain \ No newline at end of property |
/*- | |||||
* Copyright (c) 2016 Ruslan Bukin <br@bsdpad.com> | |||||
* All rights reserved. | |||||
* | |||||
* This software was developed by SRI International and the University of | |||||
* Cambridge Computer Laboratory under DARPA/AFRL contract FA8750-10-C-0237 | |||||
* ("CTSRD"), as part of the DARPA CRASH research programme. | |||||
* | |||||
* 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. | |||||
*/ | |||||
/* xDMA memcpy test driver. */ | |||||
#include <sys/cdefs.h> | |||||
__FBSDID("$FreeBSD$"); | |||||
#include <sys/param.h> | |||||
#include <sys/systm.h> | |||||
#include <sys/conf.h> | |||||
#include <sys/bus.h> | |||||
#include <sys/kernel.h> | |||||
#include <sys/kthread.h> | |||||
#include <sys/module.h> | |||||
#include <sys/lock.h> | |||||
#include <sys/mutex.h> | |||||
#include <sys/resource.h> | |||||
#include <sys/rman.h> | |||||
#include <machine/bus.h> | |||||
#include <dev/xdma/xdma.h> | |||||
#include <dev/fdt/fdt_common.h> | |||||
#include <dev/ofw/ofw_bus.h> | |||||
#include <dev/ofw/ofw_bus_subr.h> | |||||
/* | |||||
* To use this test add a compatible node to your dts, e.g. | |||||
* | |||||
* xdma_test { | |||||
* compatible = "freebsd,xdma-test"; | |||||
* | |||||
* dmas = <&dma 0 0 0xffffffff>; | |||||
* dma-names = "test"; | |||||
* }; | |||||
*/ | |||||
struct xdmatest_softc { | |||||
device_t dev; | |||||
xdma_controller_t *xdma; | |||||
xdma_channel_t *xchan; | |||||
void *ih; | |||||
struct intr_config_hook config_intrhook; | |||||
char *src; | |||||
char *dst; | |||||
uint32_t len; | |||||
uintptr_t src_phys; | |||||
uintptr_t dst_phys; | |||||
bus_dma_tag_t src_dma_tag; | |||||
bus_dmamap_t src_dma_map; | |||||
bus_dma_tag_t dst_dma_tag; | |||||
bus_dmamap_t dst_dma_map; | |||||
struct mtx mtx; | |||||
int done; | |||||
struct proc *newp; | |||||
}; | |||||
static int xdmatest_probe(device_t dev); | |||||
static int xdmatest_attach(device_t dev); | |||||
static int xdmatest_detach(device_t dev); | |||||
static int | |||||
xdmatest_intr(void *arg) | |||||
{ | |||||
struct xdmatest_softc *sc; | |||||
sc = arg; | |||||
sc->done = 1; | |||||
mtx_lock(&sc->mtx); | |||||
wakeup(sc); | |||||
mtx_unlock(&sc->mtx); | |||||
return (0); | |||||
} | |||||
static void | |||||
xdmatest_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int err) | |||||
{ | |||||
bus_addr_t *addr; | |||||
if (err) | |||||
return; | |||||
addr = (bus_addr_t*)arg; | |||||
*addr = segs[0].ds_addr; | |||||
} | |||||
static int | |||||
xdmatest_alloc_test_memory(struct xdmatest_softc *sc) | |||||
{ | |||||
int err; | |||||
sc->len = (0x1000000 - 8); /* 16mb */ | |||||
sc->len = 8; | |||||
/* Source memory. */ | |||||
err = bus_dma_tag_create( | |||||
bus_get_dma_tag(sc->dev), | |||||
1024, 0, /* alignment, boundary */ | |||||
BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ | |||||
BUS_SPACE_MAXADDR, /* highaddr */ | |||||
NULL, NULL, /* filter, filterarg */ | |||||
sc->len, 1, /* maxsize, nsegments*/ | |||||
sc->len, 0, /* maxsegsize, flags */ | |||||
NULL, NULL, /* lockfunc, lockarg */ | |||||
&sc->src_dma_tag); | |||||
if (err) { | |||||
device_printf(sc->dev, | |||||
"%s: Can't create bus_dma tag.\n", __func__); | |||||
return (-1); | |||||
} | |||||
err = bus_dmamem_alloc(sc->src_dma_tag, (void **)&sc->src, | |||||
BUS_DMA_WAITOK | BUS_DMA_COHERENT, &sc->src_dma_map); | |||||
if (err) { | |||||
device_printf(sc->dev, | |||||
"%s: Can't allocate memory.\n", __func__); | |||||
return (-1); | |||||
} | |||||
err = bus_dmamap_load(sc->src_dma_tag, sc->src_dma_map, sc->src, | |||||
sc->len, xdmatest_dmamap_cb, &sc->src_phys, BUS_DMA_WAITOK); | |||||
if (err) { | |||||
device_printf(sc->dev, | |||||
"%s: Can't load DMA map.\n", __func__); | |||||
return (-1); | |||||
} | |||||
/* Destination memory. */ | |||||
err = bus_dma_tag_create( | |||||
bus_get_dma_tag(sc->dev), | |||||
1024, 0, /* alignment, boundary */ | |||||
BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ | |||||
BUS_SPACE_MAXADDR, /* highaddr */ | |||||
NULL, NULL, /* filter, filterarg */ | |||||
sc->len, 1, /* maxsize, nsegments*/ | |||||
sc->len, 0, /* maxsegsize, flags */ | |||||
NULL, NULL, /* lockfunc, lockarg */ | |||||
&sc->dst_dma_tag); | |||||
if (err) { | |||||
device_printf(sc->dev, | |||||
"%s: Can't create bus_dma tag.\n", __func__); | |||||
return (-1); | |||||
} | |||||
err = bus_dmamem_alloc(sc->dst_dma_tag, (void **)&sc->dst, | |||||
BUS_DMA_WAITOK | BUS_DMA_COHERENT, &sc->dst_dma_map); | |||||
if (err) { | |||||
device_printf(sc->dev, | |||||
"%s: Can't allocate memory.\n", __func__); | |||||
return (-1); | |||||
} | |||||
err = bus_dmamap_load(sc->dst_dma_tag, sc->dst_dma_map, sc->dst, | |||||
sc->len, xdmatest_dmamap_cb, &sc->dst_phys, BUS_DMA_WAITOK); | |||||
if (err) { | |||||
device_printf(sc->dev, | |||||
"%s: Can't load DMA map.\n", __func__); | |||||
return (-1); | |||||
} | |||||
return (0); | |||||
} | |||||
static int | |||||
xdmatest_test(struct xdmatest_softc *sc) | |||||
{ | |||||
int err; | |||||
int i; | |||||
/* Get xDMA controller. */ | |||||
sc->xdma = xdma_ofw_get(sc->dev, "test"); | |||||
if (sc->xdma == NULL) { | |||||
device_printf(sc->dev, "Can't find xDMA controller.\n"); | |||||
return (-1); | |||||
} | |||||
/* Alloc xDMA virtual channel. */ | |||||
sc->xchan = xdma_channel_alloc(sc->xdma); | |||||
if (sc->xchan == NULL) { | |||||
device_printf(sc->dev, "Can't alloc virtual DMA channel.\n"); | |||||
return (-1); | |||||
} | |||||
/* Setup callback. */ | |||||
err = xdma_setup_intr(sc->xchan, xdmatest_intr, sc, &sc->ih); | |||||
if (err) { | |||||
device_printf(sc->dev, "Can't setup xDMA interrupt handler.\n"); | |||||
return (-1); | |||||
} | |||||
/* We are going to fill memory. */ | |||||
bus_dmamap_sync(sc->src_dma_tag, sc->src_dma_map, BUS_DMASYNC_PREWRITE); | |||||
bus_dmamap_sync(sc->dst_dma_tag, sc->dst_dma_map, BUS_DMASYNC_PREWRITE); | |||||
/* Fill memory. */ | |||||
for (i = 0; i < sc->len; i++) { | |||||
sc->src[i] = (i & 0xff); | |||||
sc->dst[i] = 0; | |||||
} | |||||
/* Configure channel for memcpy transfer. */ | |||||
err = xdma_prep_memcpy(sc->xchan, sc->src_phys, sc->dst_phys, sc->len); | |||||
if (err != 0) { | |||||
device_printf(sc->dev, "Can't configure virtual channel.\n"); | |||||
return (-1); | |||||
} | |||||
/* Start operation. */ | |||||
xdma_begin(sc->xchan); | |||||
return (0); | |||||
} | |||||
static int | |||||
xdmatest_verify(struct xdmatest_softc *sc) | |||||
{ | |||||
int err; | |||||
int i; | |||||
/* We have memory updated by DMA controller. */ | |||||
bus_dmamap_sync(sc->src_dma_tag, sc->src_dma_map, BUS_DMASYNC_POSTREAD); | |||||
bus_dmamap_sync(sc->dst_dma_tag, sc->dst_dma_map, BUS_DMASYNC_POSTWRITE); | |||||
for (i = 0; i < sc->len; i++) { | |||||
if (sc->dst[i] != sc->src[i]) { | |||||
device_printf(sc->dev, | |||||
"%s: Test failed: iter %d\n", __func__, i); | |||||
return (-1); | |||||
} | |||||
} | |||||
err = xdma_channel_free(sc->xchan); | |||||
if (err != 0) { | |||||
device_printf(sc->dev, | |||||
"%s: Test failed: can't deallocate channel.\n", __func__); | |||||
return (-1); | |||||
} | |||||
err = xdma_put(sc->xdma); | |||||
if (err != 0) { | |||||
device_printf(sc->dev, | |||||
"%s: Test failed: can't deallocate xDMA.\n", __func__); | |||||
return (-1); | |||||
} | |||||
return (0); | |||||
} | |||||
static void | |||||
xdmatest_worker(void *arg) | |||||
{ | |||||
struct xdmatest_softc *sc; | |||||
int timeout; | |||||
int err; | |||||
sc = arg; | |||||
device_printf(sc->dev, "Worker %d started.\n", | |||||
device_get_unit(sc->dev)); | |||||
while (1) { | |||||
sc->done = 0; | |||||
mtx_lock(&sc->mtx); | |||||
xdmatest_test(sc); | |||||
timeout = 100; | |||||
do { | |||||
mtx_sleep(sc, &sc->mtx, 0, "xdmatest_wait", hz); | |||||
} while (timeout-- && sc->done == 0); | |||||
if (timeout != 0) { | |||||
err = xdmatest_verify(sc); | |||||
if (err == 0) { | |||||
/* Test succeeded. */ | |||||
mtx_unlock(&sc->mtx); | |||||
continue; | |||||
} | |||||
} | |||||
mtx_unlock(&sc->mtx); | |||||
device_printf(sc->dev, | |||||
"%s: Test failed.\n", __func__); | |||||
break; | |||||
} | |||||
} | |||||
static void | |||||
xdmatest_delayed_attach(void *arg) | |||||
{ | |||||
struct xdmatest_softc *sc; | |||||
sc = arg; | |||||
if (kproc_create(xdmatest_worker, (void *)sc, &sc->newp, 0, 0, | |||||
"xdmatest_worker") != 0) { | |||||
device_printf(sc->dev, | |||||
"%s: Failed to create worker thread.\n", __func__); | |||||
} | |||||
config_intrhook_disestablish(&sc->config_intrhook); | |||||
} | |||||
static int | |||||
xdmatest_probe(device_t dev) | |||||
{ | |||||
if (!ofw_bus_status_okay(dev)) | |||||
return (ENXIO); | |||||
if (!ofw_bus_is_compatible(dev, "freebsd,xdma-test")) | |||||
return (ENXIO); | |||||
device_set_desc(dev, "xDMA test driver"); | |||||
return (BUS_PROBE_DEFAULT); | |||||
} | |||||
static int | |||||
xdmatest_attach(device_t dev) | |||||
{ | |||||
struct xdmatest_softc *sc; | |||||
int err; | |||||
sc = device_get_softc(dev); | |||||
sc->dev = dev; | |||||
mtx_init(&sc->mtx, device_get_nameunit(dev), "xdmatest", MTX_DEF); | |||||
/* Allocate test memory */ | |||||
err = xdmatest_alloc_test_memory(sc); | |||||
if (err != 0) { | |||||
device_printf(sc->dev, "Can't allocate test memory.\n"); | |||||
return (-1); | |||||
} | |||||
/* We'll run test later, but before / mount. */ | |||||
sc->config_intrhook.ich_func = xdmatest_delayed_attach; | |||||
sc->config_intrhook.ich_arg = sc; | |||||
if (config_intrhook_establish(&sc->config_intrhook) != 0) | |||||
device_printf(dev, "config_intrhook_establish failed\n"); | |||||
return (0); | |||||
} | |||||
static int | |||||
xdmatest_detach(device_t dev) | |||||
{ | |||||
struct xdmatest_softc *sc; | |||||
sc = device_get_softc(dev); | |||||
bus_dmamap_unload(sc->src_dma_tag, sc->src_dma_map); | |||||
bus_dmamem_free(sc->src_dma_tag, sc->src, sc->src_dma_map); | |||||
bus_dma_tag_destroy(sc->src_dma_tag); | |||||
bus_dmamap_unload(sc->dst_dma_tag, sc->dst_dma_map); | |||||
bus_dmamem_free(sc->dst_dma_tag, sc->dst, sc->dst_dma_map); | |||||
bus_dma_tag_destroy(sc->dst_dma_tag); | |||||
return (0); | |||||
} | |||||
static device_method_t xdmatest_methods[] = { | |||||
/* Device interface */ | |||||
DEVMETHOD(device_probe, xdmatest_probe), | |||||
DEVMETHOD(device_attach, xdmatest_attach), | |||||
DEVMETHOD(device_detach, xdmatest_detach), | |||||
DEVMETHOD_END | |||||
}; | |||||
static driver_t xdmatest_driver = { | |||||
"xdmatest", | |||||
xdmatest_methods, | |||||
sizeof(struct xdmatest_softc), | |||||
}; | |||||
static devclass_t xdmatest_devclass; | |||||
DRIVER_MODULE(xdmatest, simplebus, xdmatest_driver, xdmatest_devclass, 0, 0); |