diff options
Diffstat (limited to 'sys/sparc64/sbus/dma_sbus.c')
| -rw-r--r-- | sys/sparc64/sbus/dma_sbus.c | 506 |
1 files changed, 506 insertions, 0 deletions
diff --git a/sys/sparc64/sbus/dma_sbus.c b/sys/sparc64/sbus/dma_sbus.c new file mode 100644 index 0000000..9f34a8fc --- /dev/null +++ b/sys/sparc64/sbus/dma_sbus.c @@ -0,0 +1,506 @@ +/* $OpenBSD: dma_sbus.c,v 1.12 2005/03/03 01:41:45 miod Exp $ */ +/* $NetBSD: dma_sbus.c,v 1.5 2000/07/09 20:57:42 pk Exp $ */ + +/*- + * Copyright (c) 1998 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Paul Kranenburg. + * + * 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the NetBSD + * Foundation, Inc. and its contributors. + * 4. Neither the name of The NetBSD Foundation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * 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. + */ + +/*- + * Copyright (c) 1994 Peter Galbavy. All rights reserved. + * Copyright (c) 2005 Marius Strobl <marius@FreeBSD.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 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> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/bus.h> +#include <sys/kernel.h> +#include <sys/module.h> +#include <sys/resource.h> +#include <sys/rman.h> + +#include <dev/ofw/ofw_bus.h> +#include <dev/ofw/openfirm.h> + +#include <machine/bus.h> +#include <machine/bus_common.h> +#include <machine/resource.h> + +#include <sparc64/sbus/lsi64854reg.h> +#include <sparc64/sbus/lsi64854var.h> +#include <sparc64/sbus/ofw_sbus.h> +#include <sparc64/sbus/sbusreg.h> +#include <sparc64/sbus/sbusvar.h> + +struct dma_devinfo { + char *ddi_compat; /* PROM compatible */ + char *ddi_model; /* PROM model */ + char *ddi_name; /* PROM name */ + phandle_t ddi_node; /* PROM node */ + char *ddi_type; /* PROM device_type */ + + struct resource_list ddi_rl; +}; + +struct dma_softc { + struct lsi64854_softc sc_lsi64854; /* base device */ + int sc_ign; + int sc_slot; +}; + +static devclass_t dma_devclass; + +static device_probe_t dma_probe; +static device_attach_t dma_attach; +static bus_print_child_t dma_print_child; +static bus_probe_nomatch_t dma_probe_nomatch; +static bus_get_resource_list_t dma_get_resource_list; +#if 0 +static bus_setup_intr_t dma_setup_intr; +#endif +static ofw_bus_get_compat_t dma_get_compat; +static ofw_bus_get_model_t dma_get_model; +static ofw_bus_get_name_t dma_get_name; +static ofw_bus_get_node_t dma_get_node; +static ofw_bus_get_type_t dma_get_type; + +static struct dma_devinfo *dma_setup_dinfo(device_t, phandle_t, char *); +static void dma_destroy_dinfo(struct dma_devinfo *); + +static device_method_t dma_methods[] = { + /* Device interface */ + DEVMETHOD(device_probe, dma_probe), + DEVMETHOD(device_attach, dma_attach), + + /* Bus interface */ + DEVMETHOD(bus_print_child, dma_print_child), + DEVMETHOD(bus_probe_nomatch, dma_probe_nomatch), +#if 0 + DEVMETHOD(bus_setup_intr, dma_setup_intr), +#else + DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), +#endif + DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), + DEVMETHOD(bus_alloc_resource, bus_generic_rl_alloc_resource), + DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource), + DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), + DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), + DEVMETHOD(bus_get_resource_list, dma_get_resource_list), + DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource), + + /* ofw_bus interface */ + DEVMETHOD(ofw_bus_get_compat, dma_get_compat), + DEVMETHOD(ofw_bus_get_model, dma_get_model), + DEVMETHOD(ofw_bus_get_name, dma_get_name), + DEVMETHOD(ofw_bus_get_node, dma_get_node), + DEVMETHOD(ofw_bus_get_type, dma_get_type), + + { 0, 0 } +}; + +static driver_t dma_driver = { + "dma", + dma_methods, + sizeof(struct dma_softc), +}; + +DRIVER_MODULE(dma, sbus, dma_driver, dma_devclass, 0, 0); + +static int +dma_probe(device_t dev) +{ + const char *name; + + name = ofw_bus_get_name(dev); + if (strcmp(name, "espdma") == 0 || strcmp(name, "dma") == 0 || + strcmp(name, "ledma") == 0) { + device_set_desc_copy(dev, name); + return (0); + } + return (ENXIO); +} + +static int +dma_attach(device_t dev) +{ + struct dma_softc *dsc; + struct lsi64854_softc *lsc; + struct dma_devinfo *ddi; + device_t cdev; + const char *name; + char *cabletype, *cname; + uint32_t csr; + phandle_t child, node; + int error, burst, children; + + dsc = device_get_softc(dev); + bzero(dsc, sizeof(struct dma_softc)); + lsc = &dsc->sc_lsi64854; + + name = ofw_bus_get_name(dev); + node = ofw_bus_get_node(dev); + dsc->sc_ign = sbus_get_ign(dev); + dsc->sc_slot = sbus_get_slot(dev); + + lsc->sc_rid = 0; + lsc->sc_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &lsc->sc_rid, + RF_ACTIVE); + if (lsc->sc_res == NULL) { + device_printf(dev, "cannot allocate resources\n"); + return (ENXIO); + } + lsc->sc_regt = rman_get_bustag(lsc->sc_res); + lsc->sc_regh = rman_get_bushandle(lsc->sc_res); + + if (strcmp(name, "espdma") == 0 || strcmp(name, "dma") == 0) + lsc->sc_channel = L64854_CHANNEL_SCSI; + else if (strcmp(name, "ledma") == 0) { + /* + * Check to see which cable type is currently active and + * set the appropriate bit in the ledma csr so that it + * gets used. If we didn't netboot, the PROM won't have + * the "cable-selection" property; default to TP and then + * the user can change it via a "media" option to ifconfig. + */ + csr = L64854_GCSR(lsc); + if ((OF_getprop_alloc(node, "cable-selection", 1, + (void **)&cabletype)) == -1) { + /* assume TP if nothing there */ + csr |= E_TP_AUI; + } else { + if (strcmp(cabletype, "aui") == 0) + csr &= ~E_TP_AUI; + else + csr |= E_TP_AUI; + free(cabletype, M_OFWPROP); + } + L64854_SCSR(lsc, csr); + DELAY(20000); /* manual says we need a 20ms delay */ + lsc->sc_channel = L64854_CHANNEL_ENET; + } else { + device_printf(dev, "unsupported DMA channel\n"); + error = ENXIO; + goto fail_lres; + } + + error = bus_dma_tag_create( + NULL, /* parent */ + PAGE_SIZE, 0, /* alignment, boundary */ + BUS_SPACE_MAXADDR, /* lowaddr */ + BUS_SPACE_MAXADDR, /* highaddr */ + NULL, NULL, /* filter, filterarg */ + BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ + 0, /* nsegments */ + BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ + 0, /* flags */ + NULL, NULL, /* no locking */ + &lsc->sc_parent_dmat); + if (error != 0) { + device_printf(dev, "cannot allocate parent DMA tag\n"); + goto fail_lres; + } + + burst = sbus_get_burstsz(dev); + lsc->sc_burst = (burst & SBUS_BURST_32) ? 32 : + (burst & SBUS_BURST_16) ? 16 : 0; + lsc->sc_dev = dev; + + error = lsi64854_attach(lsc); + if (error != 0) { + device_printf(dev, "lsi64854_attach failed\n"); + goto fail_lpdma; + } + + /* Attach children. */ + children = 0; + for (child = OF_child(node); child != 0; child = OF_peer(child)) { + if ((OF_getprop_alloc(child, "name", 1, (void **)&cname)) == -1) + continue; + if ((ddi = dma_setup_dinfo(dev, child, cname)) == NULL) { + device_printf(dev, "<%s>: incomplete\n", cname); + free(cname, M_OFWPROP); + continue; + } + if (children != 0) { + device_printf(dev, "<%s>: only one child per DMA " + "channel supported\n", cname); + dma_destroy_dinfo(ddi); + free(cname, M_OFWPROP); + continue; + } + if ((cdev = device_add_child(dev, NULL, -1)) == NULL) { + device_printf(dev, "<%s>: device_add_child failed\n", + cname); + dma_destroy_dinfo(ddi); + free(cname, M_OFWPROP); + continue; + } + device_set_ivars(cdev, ddi); + children++; + } + error = bus_generic_attach(dev); + if (error != 0) { + device_printf(dev, "bus_generic_attach failed\n"); + goto fail_lsi; + } + + return (0); + + fail_lsi: + lsi64854_detach(lsc); + fail_lpdma: + bus_dma_tag_destroy(lsc->sc_parent_dmat); + fail_lres: + bus_release_resource(dev, SYS_RES_MEMORY, lsc->sc_rid, lsc->sc_res); + return (error); +} + +static struct dma_devinfo * +dma_setup_dinfo(device_t dev, phandle_t node, char *name) +{ + struct dma_softc *dsc; + struct dma_devinfo *ddi; + struct sbus_regs *reg; + uint32_t base, iv, *intr; + int i, nreg, nintr, slot, rslot; + + dsc = device_get_softc(dev); + + ddi = malloc(sizeof(*ddi), M_DEVBUF, M_WAITOK | M_ZERO); + if (ddi == NULL) + return (NULL); + resource_list_init(&ddi->ddi_rl); + ddi->ddi_name = name; + ddi->ddi_node = node; + OF_getprop_alloc(node, "compatible", 1, (void **)&ddi->ddi_compat); + OF_getprop_alloc(node, "device_type", 1, (void **)&ddi->ddi_type); + OF_getprop_alloc(node, "model", 1, (void **)&ddi->ddi_model); + slot = -1; + nreg = OF_getprop_alloc(node, "reg", sizeof(*reg), (void **)®); + if (nreg == -1) { + dma_destroy_dinfo(ddi); + return (NULL); + } + for (i = 0; i < nreg; i++) { + base = reg[i].sbr_offset; + if (SBUS_ABS(base)) { + rslot = SBUS_ABS_TO_SLOT(base); + base = SBUS_ABS_TO_OFFSET(base); + } else + rslot = reg[i].sbr_slot; + if (slot != -1 && slot != rslot) { + device_printf(dev, "<%s>: multiple slots\n", name); + free(reg, M_OFWPROP); + dma_destroy_dinfo(ddi); + return (NULL); + } + slot = rslot; + + resource_list_add(&ddi->ddi_rl, SYS_RES_MEMORY, i, base, + base + reg[i].sbr_size, reg[i].sbr_size); + } + free(reg, M_OFWPROP); + if (slot != dsc->sc_slot) { + device_printf(dev, "<%s>: parent and child slot do not match\n", + name); + dma_destroy_dinfo(ddi); + return (NULL); + } + + /* + * The `interrupts' property contains the SBus interrupt level. + */ + nintr = OF_getprop_alloc(node, "interrupts", sizeof(*intr), + (void **)&intr); + if (nintr != -1) { + for (i = 0; i < nintr; i++) { + iv = intr[i]; + /* + * SBus card devices need the slot number encoded into + * the vector as this is generally not done. + */ + if ((iv & INTMAP_OBIO_MASK) == 0) + iv |= slot << 3; + /* Set the IGN as appropriate. */ + iv |= dsc->sc_ign << INTMAP_IGN_SHIFT; + resource_list_add(&ddi->ddi_rl, SYS_RES_IRQ, i, + iv, iv, 1); + } + free(intr, M_OFWPROP); + } + return (ddi); +} + +static void +dma_destroy_dinfo(struct dma_devinfo *dinfo) +{ + + resource_list_free(&dinfo->ddi_rl); + if (dinfo->ddi_compat != NULL) + free(dinfo->ddi_compat, M_OFWPROP); + if (dinfo->ddi_model != NULL) + free(dinfo->ddi_model, M_OFWPROP); + if (dinfo->ddi_type != NULL) + free(dinfo->ddi_type, M_OFWPROP); + free(dinfo, M_DEVBUF); +} + +static int +dma_print_child(device_t dev, device_t child) +{ + struct dma_devinfo *ddi; + struct resource_list *rl; + int rv; + + ddi = device_get_ivars(child); + rl = &ddi->ddi_rl; + rv = bus_print_child_header(dev, child); + rv += resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx"); + rv += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld"); + rv += bus_print_child_footer(dev, child); + return (rv); +} + +static void +dma_probe_nomatch(device_t dev, device_t child) +{ + struct dma_devinfo *ddi; + struct resource_list *rl; + + ddi = device_get_ivars(child); + rl = &ddi->ddi_rl; + device_printf(dev, "<%s>", ddi->ddi_name); + resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx"); + resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld"); + printf(" type %s (no driver attached)\n", + ddi->ddi_type != NULL ? ddi->ddi_type : "unknown"); +} + +static struct resource_list * +dma_get_resource_list(device_t dev, device_t child) +{ + struct dma_devinfo *ddi; + + ddi = device_get_ivars(child); + return (&ddi->ddi_rl); +} + +#if 0 +static int +dma_setup_intr(device_t dev, device_t child, struct resource *ires, int flags, + driver_intr_t *intr, void *arg, void **cookiep) +{ + struct lsi64854_softc *sc; + + sc = (struct lsi64854_softc *)device_get_softc(dev); + /* XXX - for now only le; do ESP later */ + if (sc->sc_channel == L64854_CHANNEL_ENET) { + sc->sc_intrchain = intr; + sc->sc_intrchainarg = arg; + intr = (driver_intr_t *)lsi64854_enet_intr; + arg = sc; + } + + return (BUS_SETUP_INTR(device_get_parent(dev), child, ires, flags, + intr, arg, cookiep)); +} +#endif + +static const char * +dma_get_compat(device_t bus, device_t dev) +{ + struct dma_devinfo *dinfo; + + dinfo = device_get_ivars(dev); + return (dinfo->ddi_compat); +} + +static const char * +dma_get_model(device_t bus, device_t dev) +{ + struct dma_devinfo *dinfo; + + dinfo = device_get_ivars(dev); + return (dinfo->ddi_model); +} + +static const char * +dma_get_name(device_t bus, device_t dev) +{ + struct dma_devinfo *dinfo; + + dinfo = device_get_ivars(dev); + return (dinfo->ddi_name); +} + +static phandle_t +dma_get_node(device_t bus, device_t dev) +{ + struct dma_devinfo *dinfo; + + dinfo = device_get_ivars(dev); + return (dinfo->ddi_node); +} + +static const char * +dma_get_type(device_t bus, device_t dev) +{ + struct dma_devinfo *dinfo; + + dinfo = device_get_ivars(dev); + return (dinfo->ddi_type); +} |
