can read some blocks from sd-card, but then something fails and the wrapper won't acknowledge the rd_addr handshake :-(
This commit is contained in:
Romain Dolbeau
@@ -268,6 +268,7 @@ rdfpga_write(dev_t dev, struct uio *uio, int flags)
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void* kvap;
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if (bus_dmamem_map(sc->sc_dmatag, &segs, 1, RDFPGA_VAL_DMA_MAX_SZ, &kvap, BUS_DMA_NOWAIT)) {
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aprint_error_dev(sc->sc_dev, "cannot allocate DVMA address");
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bus_dmamem_free(sc->sc_dmatag, &segs, 1);
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return ENXIO;
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}
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/* else { */
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@@ -277,6 +278,8 @@ rdfpga_write(dev_t dev, struct uio *uio, int flags)
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if (bus_dmamap_load(sc->sc_dmatag, sc->sc_dmamap, kvap, RDFPGA_VAL_DMA_MAX_SZ, /* kernel space */ NULL,
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BUS_DMA_NOWAIT | BUS_DMA_STREAMING | BUS_DMA_WRITE)) {
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aprint_error_dev(sc->sc_dev, "cannot load dma map");
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bus_dmamem_unmap(sc->sc_dmatag, kvap, RDFPGA_VAL_DMA_MAX_SZ);
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bus_dmamem_free(sc->sc_dmatag, &segs, 1);
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return ENXIO;
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}
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/* else { */
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322
NetBSD/9.0/usr/src/sys/dev/sbus/rdfpga_sdcard.c
Normal file
322
NetBSD/9.0/usr/src/sys/dev/sbus/rdfpga_sdcard.c
Normal file
@@ -0,0 +1,322 @@
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/* $NetBSD$ */
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/*-
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* Copyright (c) 2020 Romain Dolbeau <romain@dolbeau.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/errno.h>
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#include <sys/device.h>
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#include <sys/malloc.h>
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#include <sys/bus.h>
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#include <machine/autoconf.h>
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#include <sys/cpu.h>
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#include <sys/conf.h>
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#include <sys/rndsource.h>
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#include <sys/timetc.h>
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#include <dev/sbus/sbusvar.h>
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#include <dev/sbus/rdfpga_sdcard.h>
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#include <machine/param.h>
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int rdfpga_sdcard_print(void *, const char *);
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int rdfpga_sdcard_match(device_t, cfdata_t, void *);
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void rdfpga_sdcard_attach(device_t, device_t, void *);
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CFATTACH_DECL_NEW(rdfpga_sdcard, sizeof(struct rdfpga_sdcard_softc),
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rdfpga_sdcard_match, rdfpga_sdcard_attach, NULL, NULL);
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dev_type_open(rdfpga_sdcard_open);
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dev_type_close(rdfpga_sdcard_close);
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dev_type_ioctl(rdfpga_sdcard_ioctl);
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const struct bdevsw rdfpga_sdcard_bdevsw = {
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.d_open = rdfpga_sdcard_open,
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.d_close = rdfpga_sdcard_close,
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.d_strategy = bdev_strategy,
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.d_ioctl = rdfpga_sdcard_ioctl,
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.d_dump = nodump,
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.d_psize = nosize,
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.d_discard = nodiscard,
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.d_flag = D_DISK
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};
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extern struct cfdriver rdfpga_sdcard_cd;
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static int rdfpga_sdcard_wait_dma_ready(struct rdfpga_sdcard_softc *sc, const int count);
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static int rdfpga_sdcard_wait_device_ready(struct rdfpga_sdcard_softc *sc, const int count);
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static int rdfpga_sdcard_read_block(struct rdfpga_sdcard_softc *sc, const u_int32_t block, void *data);
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struct rdfpga_sdcard_rb_32to512 {
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union {
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u_int32_t block;
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u_int8_t data[512];
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} x;
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};
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#define RDFPGA_SDCARD_RS _IOR(0, 1, u_int32_t)
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#define RDFPGA_SDCARD_RSO _IOR(0, 3, u_int32_t)
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#define RDFPGA_SDCARD_RSO2 _IOR(0, 4, u_int32_t)
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#define RDFPGA_SDCARD_RSO3 _IOR(0, 5, u_int32_t)
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#define RDFPGA_SDCARD_RSTC _IOR(0, 6, u_int32_t)
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#define RDFPGA_SDCARD_RSTD _IOR(0, 7, u_int32_t)
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#define RDFPGA_SDCARD_RB _IOWR(0, 2, struct rdfpga_sdcard_rb_32to512)
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int
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rdfpga_sdcard_ioctl (dev_t dev, u_long cmd, void *data, int flag, struct lwp *l)
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{
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struct rdfpga_sdcard_softc *sc = device_lookup_private(&rdfpga_sdcard_cd, minor(dev));
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int err = 0;
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switch (cmd) {
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case RDFPGA_SDCARD_RS:
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*((u_int32_t*)data) = bus_space_read_4(sc->sc_bustag, sc->sc_bhregs, RDFPGA_SDCARD_REG_STATUS);
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break;
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case RDFPGA_SDCARD_RSO:
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*((u_int32_t*)data) = bus_space_read_4(sc->sc_bustag, sc->sc_bhregs, RDFPGA_SDCARD_REG_STATUS_OLD);
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break;
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case RDFPGA_SDCARD_RSO2:
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*((u_int32_t*)data) = bus_space_read_4(sc->sc_bustag, sc->sc_bhregs, RDFPGA_SDCARD_REG_STATUS_OLD2);
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break;
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case RDFPGA_SDCARD_RSO3:
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*((u_int32_t*)data) = bus_space_read_4(sc->sc_bustag, sc->sc_bhregs, RDFPGA_SDCARD_REG_STATUS_OLD3);
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break;
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case RDFPGA_SDCARD_RSTC:
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*((u_int32_t*)data) = bus_space_read_4(sc->sc_bustag, sc->sc_bhregs, RDFPGA_SDCARD_REG_CTRL);
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bus_space_write_4(sc->sc_bustag, sc->sc_bhregs, RDFPGA_SDCARD_REG_CTRL, 0);
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break;
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case RDFPGA_SDCARD_RSTD:
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*((u_int32_t*)data) = bus_space_read_4(sc->sc_bustag, sc->sc_bhregs, RDFPGA_SDCARD_REG_DMAW_CTRL);
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bus_space_write_4(sc->sc_bustag, sc->sc_bhregs, RDFPGA_SDCARD_REG_DMAW_CTRL, 0);
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break;
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case RDFPGA_SDCARD_RB:
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{
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struct rdfpga_sdcard_rb_32to512* u = data;
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err = rdfpga_sdcard_read_block(sc, u->x.block, u->x.data);
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break;
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}
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default:
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err = EINVAL;
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break;
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}
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return(err);
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}
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int
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rdfpga_sdcard_open(dev_t dev, int flags, int mode, struct lwp *l)
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{
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return (0);
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}
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int
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rdfpga_sdcard_close(dev_t dev, int flags, int mode, struct lwp *l)
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{
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return (0);
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}
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int
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rdfpga_sdcard_print(void *aux, const char *busname)
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{
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sbus_print(aux, busname);
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return (UNCONF);
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}
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int
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rdfpga_sdcard_match(device_t parent, cfdata_t cf, void *aux)
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{
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struct sbus_attach_args *sa = (struct sbus_attach_args *)aux;
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return (strcmp("RDOL,sdcard", sa->sa_name) == 0);
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}
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/*
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* Attach all the sub-devices we can find
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*/
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void
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rdfpga_sdcard_attach(device_t parent, device_t self, void *aux)
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{
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struct sbus_attach_args *sa = aux;
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struct rdfpga_sdcard_softc *sc = device_private(self);
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struct sbus_softc *sbsc = device_private(parent);
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int node;
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int sbusburst;
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sc->sc_bustag = sa->sa_bustag;
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sc->sc_dmatag = sa->sa_dmatag;
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sc->sc_dev = self;
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if (sbus_bus_map(sc->sc_bustag, sa->sa_slot, sa->sa_offset, sa->sa_size,
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BUS_SPACE_MAP_LINEAR, &sc->sc_bhregs) != 0) {
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aprint_error(": cannot map registers\n");
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return;
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}
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//sc->sc_buffer = bus_space_vaddr(sc->sc_bustag, sc->sc_bhregs);
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sc->sc_bufsiz = sa->sa_size;
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node = sc->sc_node = sa->sa_node;
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/*
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* Get transfer burst size from PROM
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*/
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sbusburst = sbsc->sc_burst;
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if (sbusburst == 0)
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sbusburst = SBUS_BURST_32 - 1; /* 1->16 */
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sc->sc_burst = prom_getpropint(node, "burst-sizes", -1);
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if (sc->sc_burst == -1)
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/* take SBus burst sizes */
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sc->sc_burst = sbusburst;
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/* Clamp at parent's burst sizes */
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sc->sc_burst &= sbusburst;
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aprint_normal("\n");
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aprint_normal_dev(self, "nid 0x%x, bustag %p, burst 0x%x (parent 0x%0x)\n",
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sc->sc_node,
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sc->sc_bustag,
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sc->sc_burst,
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sbsc->sc_burst);
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aprint_normal_dev(self, "old status 0x%08x, current 0x%08x\n",
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bus_space_read_4(sc->sc_bustag, sc->sc_bhregs, RDFPGA_SDCARD_REG_STATUS_OLD),
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bus_space_read_4(sc->sc_bustag, sc->sc_bhregs, RDFPGA_SDCARD_REG_STATUS));
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/* Allocate a dmamap */
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if (bus_dmamap_create(sc->sc_dmatag, RDFPGA_SDCARD_VAL_DMA_MAX_SZ, 1, RDFPGA_SDCARD_VAL_DMA_MAX_SZ, 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &sc->sc_dmamap) != 0) {
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aprint_error_dev(self, ": DMA map create failed\n");
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} else {
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aprint_normal_dev(self, "dmamap: %lu %lu %d (%p)\n", sc->sc_dmamap->dm_maxsegsz, sc->sc_dmamap->dm_mapsize, sc->sc_dmamap->dm_nsegs, sc->sc_dmatag->_dmamap_load);
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}
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}
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static int rdfpga_sdcard_wait_dma_ready(struct rdfpga_sdcard_softc *sc, const int count) {
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u_int32_t ctrl;
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int ctr;
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ctr = 0;
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while (((ctrl = bus_space_read_4(sc->sc_bustag, sc->sc_bhregs, RDFPGA_SDCARD_REG_DMAW_CTRL)) != 0) &&
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(ctr < count)) {
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delay(1);
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ctr ++;
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}
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if (ctrl)
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return EBUSY;
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return 0;
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}
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static int rdfpga_sdcard_wait_device_ready(struct rdfpga_sdcard_softc *sc, const int count) {
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u_int32_t ctrl;
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int ctr;
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ctr = 0;
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while (((ctrl = bus_space_read_4(sc->sc_bustag, sc->sc_bhregs, RDFPGA_SDCARD_REG_CTRL)) != 0) &&
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(ctr < count)) {
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/* aprint_error_dev(sc->sc_dev, "ctrl is 0x%08x (%d, old status 0x%08x, current 0x%08x)\n", ctrl, ctr, */
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/* bus_space_read_4(sc->sc_bustag, sc->sc_bhregs, RDFPGA_SDCARD_REG_STATUS_OLD), */
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/* bus_space_read_4(sc->sc_bustag, sc->sc_bhregs, RDFPGA_SDCARD_REG_STATUS)); */
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delay(1);
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ctr ++;
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}
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aprint_normal_dev(sc->sc_dev, "ctrl is 0x%08x (%d, old status 0x%08x, current 0x%08x)\n", ctrl, ctr,
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bus_space_read_4(sc->sc_bustag, sc->sc_bhregs, RDFPGA_SDCARD_REG_STATUS_OLD),
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bus_space_read_4(sc->sc_bustag, sc->sc_bhregs, RDFPGA_SDCARD_REG_STATUS));
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if (ctrl)
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return EBUSY;
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return rdfpga_sdcard_wait_dma_ready(sc, count);
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}
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static int rdfpga_sdcard_read_block(struct rdfpga_sdcard_softc *sc, const u_int32_t block, void *data) {
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int res = 0;
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u_int32_t ctrl;
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if ((res = rdfpga_sdcard_wait_device_ready(sc, 50000)) != 0)
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return res;
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if (bus_dmamem_alloc(sc->sc_dmatag, RDFPGA_SDCARD_VAL_DMA_MAX_SZ, 64, 64, &sc->sc_segs, 1, &sc->sc_rsegs, BUS_DMA_NOWAIT | BUS_DMA_STREAMING)) {
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aprint_error_dev(sc->sc_dev, "cannot allocate DVMA memory");
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return ENXIO;
|
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}
|
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|
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void* kvap;
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if (bus_dmamem_map(sc->sc_dmatag, &sc->sc_segs, 1, RDFPGA_SDCARD_VAL_DMA_MAX_SZ, &kvap, BUS_DMA_NOWAIT)) {
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aprint_error_dev(sc->sc_dev, "cannot allocate DVMA address");
|
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bus_dmamem_free(sc->sc_dmatag, &sc->sc_segs, 1);
|
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return ENXIO;
|
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}
|
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|
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/* for testing only, remove */
|
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memcpy(kvap, data, 512);
|
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|
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if (bus_dmamap_load(sc->sc_dmatag, sc->sc_dmamap, kvap, RDFPGA_SDCARD_VAL_DMA_MAX_SZ, /* kernel space */ NULL,
|
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BUS_DMA_NOWAIT | BUS_DMA_STREAMING | BUS_DMA_READ)) {
|
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aprint_error_dev(sc->sc_dev, "cannot load dma map");
|
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bus_dmamem_unmap(sc->sc_dmatag, kvap, RDFPGA_SDCARD_VAL_DMA_MAX_SZ);
|
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bus_dmamem_free(sc->sc_dmatag, &sc->sc_segs, 1);
|
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return ENXIO;
|
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}
|
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|
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bus_dmamap_sync(sc->sc_dmatag, sc->sc_dmamap, 0, 512, BUS_DMASYNC_PREREAD);
|
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|
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/* set DMA address */
|
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bus_space_write_4(sc->sc_bustag, sc->sc_bhregs, RDFPGA_SDCARD_REG_DMAW_ADDR, (uint32_t)(sc->sc_dmamap->dm_segs[0].ds_addr));
|
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/* set block to read */
|
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bus_space_write_4(sc->sc_bustag, sc->sc_bhregs, RDFPGA_SDCARD_REG_ADDR, block);
|
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ctrl = RDFPGA_SDCARD_CTRL_START | RDFPGA_SDCARD_CTRL_READ;
|
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/* initiate reading block from SDcard; once the read request is acknowledged, the HW will start the DMA engine */
|
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bus_space_write_4(sc->sc_bustag, sc->sc_bhregs, RDFPGA_SDCARD_REG_CTRL, ctrl);
|
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|
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res = rdfpga_sdcard_wait_device_ready(sc, 100000);
|
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|
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bus_dmamap_sync(sc->sc_dmatag, sc->sc_dmamap, 0, 512, BUS_DMASYNC_POSTREAD);
|
||||
|
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bus_dmamap_unload(sc->sc_dmatag, sc->sc_dmamap);
|
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/* aprint_normal_dev(sc->sc_dev, "dma: unloaded\n"); */
|
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|
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memcpy(data, kvap, 512);
|
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|
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bus_dmamem_unmap(sc->sc_dmatag, kvap, RDFPGA_SDCARD_VAL_DMA_MAX_SZ);
|
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/* aprint_normal_dev(sc->sc_dev, "dma: unmapped\n"); */
|
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|
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bus_dmamem_free(sc->sc_dmatag, &sc->sc_segs, 1);
|
||||
|
||||
return res;
|
||||
}
|
||||
67
NetBSD/9.0/usr/src/sys/dev/sbus/rdfpga_sdcard.h
Normal file
67
NetBSD/9.0/usr/src/sys/dev/sbus/rdfpga_sdcard.h
Normal file
@@ -0,0 +1,67 @@
|
||||
/* $NetBSD$ */
|
||||
|
||||
/*-
|
||||
* Copyright (c) 2020 Romain Dolbeau <romain@dolbeau.org>
|
||||
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
|
||||
*/
|
||||
|
||||
#ifndef _RDFPGA_SDCARD_H_
|
||||
#define _RDFPGA_SDCARD_H_
|
||||
|
||||
struct rdfpga_sdcard_softc {
|
||||
device_t sc_dev; /* us as a device */
|
||||
u_int sc_rev; /* revision */
|
||||
int sc_node; /* PROM node ID */
|
||||
int sc_burst; /* DVMA burst size in effect */
|
||||
bus_space_tag_t sc_bustag; /* bus tag */
|
||||
bus_space_handle_t sc_bhregs; /* bus handle */
|
||||
//void * sc_buffer; /* VA of the registers */
|
||||
int sc_bufsiz; /* Size of buffer */
|
||||
bus_dma_tag_t sc_dmatag;
|
||||
bus_dmamap_t sc_dmamap; /* DMA map for bus_dma_* */
|
||||
bus_dma_segment_t sc_segs;
|
||||
int sc_rsegs;
|
||||
|
||||
};
|
||||
|
||||
/* ctrl*/
|
||||
#define RDFPGA_SDCARD_REG_BASE 0x00
|
||||
#define RDFPGA_SDCARD_REG_STATUS (RDFPGA_SDCARD_REG_BASE + 0x00)
|
||||
#define RDFPGA_SDCARD_REG_STATUS_OLD (RDFPGA_SDCARD_REG_BASE + 0x04)
|
||||
#define RDFPGA_SDCARD_REG_ADDR (RDFPGA_SDCARD_REG_BASE + 0x08)
|
||||
#define RDFPGA_SDCARD_REG_CTRL (RDFPGA_SDCARD_REG_BASE + 0x0c)
|
||||
#define RDFPGA_SDCARD_REG_DMAW_ADDR (RDFPGA_SDCARD_REG_BASE + 0x10)
|
||||
#define RDFPGA_SDCARD_REG_DMAW_CTRL (RDFPGA_SDCARD_REG_BASE + 0x14)
|
||||
#define RDFPGA_SDCARD_REG_STATUS_OLD2 (RDFPGA_SDCARD_REG_BASE + 0x18)
|
||||
#define RDFPGA_SDCARD_REG_STATUS_OLD3 (RDFPGA_SDCARD_REG_BASE + 0x1c)
|
||||
/* nothing 0x18 - 0x3c ; DATA* not used directly */
|
||||
|
||||
|
||||
#define RDFPGA_SDCARD_CTRL_START 0x80000000
|
||||
#define RDFPGA_SDCARD_CTRL_READ 0x40000000
|
||||
|
||||
/* one page, though we're likely to only use 512 bytes (one block) ATM */
|
||||
#define RDFPGA_SDCARD_VAL_DMA_MAX_SZ (4096)
|
||||
|
||||
#endif /* _RDFPGA_SDCARD_H_ */
|
||||
Reference in New Issue
Block a user