dma_sbus.c revision 200874
155714Skris/* $OpenBSD: dma_sbus.c,v 1.12 2005/03/03 01:41:45 miod Exp $ */ 255714Skris/* $NetBSD: dma_sbus.c,v 1.5 2000/07/09 20:57:42 pk Exp $ */ 355714Skris 455714Skris/*- 555714Skris * Copyright (c) 1998 The NetBSD Foundation, Inc. 655714Skris * All rights reserved. 755714Skris * 855714Skris * This code is derived from software contributed to The NetBSD Foundation 955714Skris * by Paul Kranenburg. 1055714Skris * 1155714Skris * Redistribution and use in source and binary forms, with or without 1255714Skris * modification, are permitted provided that the following conditions 1355714Skris * are met: 1455714Skris * 1. Redistributions of source code must retain the above copyright 1555714Skris * notice, this list of conditions and the following disclaimer. 1655714Skris * 2. Redistributions in binary form must reproduce the above copyright 1755714Skris * notice, this list of conditions and the following disclaimer in the 1855714Skris * documentation and/or other materials provided with the distribution. 1955714Skris * 3. All advertising materials mentioning features or use of this software 2055714Skris * must display the following acknowledgement: 2155714Skris * This product includes software developed by the NetBSD 2255714Skris * Foundation, Inc. and its contributors. 2355714Skris * 4. Neither the name of The NetBSD Foundation nor the names of its 2455714Skris * contributors may be used to endorse or promote products derived 2555714Skris * from this software without specific prior written permission. 2655714Skris * 2755714Skris * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 2855714Skris * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 2955714Skris * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 3055714Skris * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 3155714Skris * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 3255714Skris * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 3355714Skris * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 3455714Skris * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 3555714Skris * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 3655714Skris * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 3755714Skris * POSSIBILITY OF SUCH DAMAGE. 3855714Skris */ 3955714Skris 4055714Skris/*- 4155714Skris * Copyright (c) 1994 Peter Galbavy. All rights reserved. 4255714Skris * Copyright (c) 2005 Marius Strobl <marius@FreeBSD.org>. All rights reserved. 4355714Skris * 4455714Skris * Redistribution and use in source and binary forms, with or without 4555714Skris * modification, are permitted provided that the following conditions 4655714Skris * are met: 4755714Skris * 1. Redistributions of source code must retain the above copyright 4855714Skris * notice, this list of conditions and the following disclaimer. 4955714Skris * 2. Redistributions in binary form must reproduce the above copyright 5055714Skris * notice, this list of conditions and the following disclaimer in the 5155714Skris * documentation and/or other materials provided with the distribution. 5255714Skris * 5355714Skris * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 5455714Skris * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 5555714Skris * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 5655714Skris * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 5755714Skris * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 5855714Skris * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 5955714Skris * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 6055714Skris * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 6155714Skris * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 6255714Skris * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 6355714Skris */ 6455714Skris 6555714Skris#include <sys/cdefs.h> 6655714Skris__FBSDID("$FreeBSD: head/sys/sparc64/sbus/dma_sbus.c 200874 2009-12-22 21:02:46Z marius $"); 6755714Skris 6855714Skris#include <sys/param.h> 6955714Skris#include <sys/systm.h> 7055714Skris#include <sys/bus.h> 7155714Skris#include <sys/kernel.h> 7255714Skris#include <sys/module.h> 7355714Skris#include <sys/rman.h> 7455714Skris 7555714Skris#include <dev/ofw/ofw_bus.h> 7655714Skris#include <dev/ofw/ofw_bus_subr.h> 7755714Skris#include <dev/ofw/openfirm.h> 7855714Skris 7955714Skris#include <machine/bus.h> 8055714Skris#include <machine/bus_common.h> 8155714Skris#include <machine/resource.h> 8255714Skris 8355714Skris#include <sparc64/sbus/lsi64854reg.h> 8455714Skris#include <sparc64/sbus/lsi64854var.h> 8555714Skris#include <sparc64/sbus/ofw_sbus.h> 8655714Skris#include <sparc64/sbus/sbusreg.h> 8755714Skris#include <sparc64/sbus/sbusvar.h> 8855714Skris 8955714Skrisstruct dma_devinfo { 9055714Skris struct ofw_bus_devinfo ddi_obdinfo; 9155714Skris struct resource_list ddi_rl; 9255714Skris}; 9355714Skris 9455714Skrisstruct dma_softc { 9555714Skris struct lsi64854_softc sc_lsi64854; /* base device */ 9655714Skris int sc_ign; 9755714Skris int sc_slot; 9855714Skris}; 9955714Skris 10055714Skrisstatic devclass_t dma_devclass; 10155714Skris 10255714Skrisstatic device_probe_t dma_probe; 10355714Skrisstatic device_attach_t dma_attach; 10455714Skrisstatic bus_print_child_t dma_print_child; 10555714Skrisstatic bus_probe_nomatch_t dma_probe_nomatch; 10655714Skrisstatic bus_get_resource_list_t dma_get_resource_list; 10755714Skrisstatic ofw_bus_get_devinfo_t dma_get_devinfo; 10855714Skris 10955714Skrisstatic struct dma_devinfo *dma_setup_dinfo(device_t, struct dma_softc *, 11055714Skris phandle_t); 11155714Skrisstatic void dma_destroy_dinfo(struct dma_devinfo *); 11255714Skrisstatic int dma_print_res(struct dma_devinfo *); 11355714Skris 11455714Skrisstatic device_method_t dma_methods[] = { 11555714Skris /* Device interface */ 11655714Skris DEVMETHOD(device_probe, dma_probe), 11755714Skris DEVMETHOD(device_attach, dma_attach), 11855714Skris DEVMETHOD(device_shutdown, bus_generic_shutdown), 11955714Skris DEVMETHOD(device_suspend, bus_generic_suspend), 12055714Skris DEVMETHOD(device_resume, bus_generic_resume), 12155714Skris 12255714Skris /* Bus interface */ 12355714Skris DEVMETHOD(bus_print_child, dma_print_child), 12455714Skris DEVMETHOD(bus_probe_nomatch, dma_probe_nomatch), 12555714Skris DEVMETHOD(bus_alloc_resource, bus_generic_rl_alloc_resource), 12655714Skris DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 12755714Skris DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 12855714Skris DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource), 12955714Skris DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 13055714Skris DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 13155714Skris DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource), 13255714Skris DEVMETHOD(bus_get_resource_list, dma_get_resource_list), 13355714Skris DEVMETHOD(bus_child_pnpinfo_str, ofw_bus_gen_child_pnpinfo_str), 13455714Skris 13555714Skris /* ofw_bus interface */ 13655714Skris DEVMETHOD(ofw_bus_get_devinfo, dma_get_devinfo), 13755714Skris DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat), 13855714Skris DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model), 13955714Skris DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name), 14055714Skris DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node), 14155714Skris DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type), 14255714Skris 14355714Skris KOBJMETHOD_END 14455714Skris}; 14555714Skris 14655714Skrisstatic driver_t dma_driver = { 14755714Skris "dma", 14855714Skris dma_methods, 14955714Skris sizeof(struct dma_softc), 15055714Skris}; 15155714Skris 15255714Skris/* 15355714Skris * The probe order is handled by sbus(4) as we don't want the variants 15455714Skris * with children to be attached earlier than the stand-alone controllers 15555714Skris * in order to generally preserve the OFW device tree order. 15655714Skris */ 15755714SkrisEARLY_DRIVER_MODULE(dma, sbus, dma_driver, dma_devclass, 0, 0, 15855714Skris BUS_PASS_DEFAULT); 15955714SkrisMODULE_DEPEND(dma, sbus, 1, 1, 1); 16055714SkrisMODULE_VERSION(dma, 1); 16155714Skris 16255714Skrisstatic int 16355714Skrisdma_probe(device_t dev) 16455714Skris{ 16555714Skris const char *name; 16655714Skris 16755714Skris name = ofw_bus_get_name(dev); 16855714Skris if (strcmp(name, "espdma") == 0 || strcmp(name, "dma") == 0 || 16955714Skris strcmp(name, "ledma") == 0) { 17055714Skris device_set_desc_copy(dev, name); 17155714Skris return (0); 17255714Skris } 17355714Skris return (ENXIO); 17455714Skris} 17555714Skris 17655714Skrisstatic int 17755714Skrisdma_attach(device_t dev) 17855714Skris{ 17955714Skris struct dma_softc *dsc; 18055714Skris struct lsi64854_softc *lsc; 18155714Skris struct dma_devinfo *ddi; 18255714Skris device_t cdev; 18355714Skris const char *name; 18455714Skris char *cabletype; 18555714Skris uint32_t csr; 18655714Skris phandle_t child, node; 18755714Skris int error, i; 18855714Skris 18955714Skris dsc = device_get_softc(dev); 19055714Skris lsc = &dsc->sc_lsi64854; 19155714Skris 19255714Skris name = ofw_bus_get_name(dev); 19355714Skris node = ofw_bus_get_node(dev); 19455714Skris dsc->sc_ign = sbus_get_ign(dev); 19555714Skris dsc->sc_slot = sbus_get_slot(dev); 19655714Skris 19755714Skris i = 0; 19855714Skris lsc->sc_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &i, 19955714Skris RF_ACTIVE); 20055714Skris if (lsc->sc_res == NULL) { 20155714Skris device_printf(dev, "cannot allocate resources\n"); 20255714Skris return (ENXIO); 20355714Skris } 20455714Skris 20555714Skris if (strcmp(name, "espdma") == 0 || strcmp(name, "dma") == 0) 20655714Skris lsc->sc_channel = L64854_CHANNEL_SCSI; 20755714Skris else if (strcmp(name, "ledma") == 0) { 20855714Skris /* 20955714Skris * Check to see which cable type is currently active and 21055714Skris * set the appropriate bit in the ledma csr so that it 21155714Skris * gets used. If we didn't netboot, the PROM won't have 21255714Skris * the "cable-selection" property; default to TP and then 21355714Skris * the user can change it via a "media" option to ifconfig. 21455714Skris */ 21555714Skris csr = L64854_GCSR(lsc); 21655714Skris if ((OF_getprop_alloc(node, "cable-selection", 1, 21755714Skris (void **)&cabletype)) == -1) { 21855714Skris /* assume TP if nothing there */ 21955714Skris csr |= E_TP_AUI; 22055714Skris } else { 22155714Skris if (strcmp(cabletype, "aui") == 0) 22255714Skris csr &= ~E_TP_AUI; 22355714Skris else 22455714Skris csr |= E_TP_AUI; 22555714Skris free(cabletype, M_OFWPROP); 22655714Skris } 22755714Skris L64854_SCSR(lsc, csr); 22855714Skris DELAY(20000); /* manual says we need a 20ms delay */ 22955714Skris lsc->sc_channel = L64854_CHANNEL_ENET; 23055714Skris } else { 23155714Skris device_printf(dev, "unsupported DMA channel\n"); 23255714Skris error = ENXIO; 23355714Skris goto fail_lres; 23455714Skris } 23555714Skris 23655714Skris error = bus_dma_tag_create( 23755714Skris bus_get_dma_tag(dev), /* parent */ 23855714Skris 1, 0, /* alignment, boundary */ 23955714Skris BUS_SPACE_MAXADDR, /* lowaddr */ 24055714Skris BUS_SPACE_MAXADDR, /* highaddr */ 24155714Skris NULL, NULL, /* filter, filterarg */ 24255714Skris BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 24355714Skris 0, /* nsegments */ 24455714Skris BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 24555714Skris 0, /* flags */ 24655714Skris NULL, NULL, /* no locking */ 24755714Skris &lsc->sc_parent_dmat); 24855714Skris if (error != 0) { 24955714Skris device_printf(dev, "cannot allocate parent DMA tag\n"); 25055714Skris goto fail_lres; 25155714Skris } 25255714Skris 25355714Skris i = sbus_get_burstsz(dev); 25455714Skris lsc->sc_burst = (i & SBUS_BURST_32) ? 32 : 25555714Skris (i & SBUS_BURST_16) ? 16 : 0; 25655714Skris lsc->sc_dev = dev; 25755714Skris 25855714Skris /* Attach children. */ 25955714Skris i = 0; 26055714Skris for (child = OF_child(node); child != 0; child = OF_peer(child)) { 26155714Skris if ((ddi = dma_setup_dinfo(dev, dsc, child)) == NULL) 26255714Skris continue; 26355714Skris if (i != 0) { 26455714Skris device_printf(dev, 26555714Skris "<%s>: only one child per DMA channel supported\n", 26655714Skris ddi->ddi_obdinfo.obd_name); 26755714Skris dma_destroy_dinfo(ddi); 26855714Skris continue; 26955714Skris } 27055714Skris if ((cdev = device_add_child(dev, NULL, -1)) == NULL) { 27155714Skris device_printf(dev, "<%s>: device_add_child failed\n", 27255714Skris ddi->ddi_obdinfo.obd_name); 27355714Skris dma_destroy_dinfo(ddi); 27455714Skris continue; 27555714Skris } 27655714Skris device_set_ivars(cdev, ddi); 27755714Skris i++; 27855714Skris } 27955714Skris return (bus_generic_attach(dev)); 28055714Skris 28155714Skris fail_lres: 28255714Skris bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(lsc->sc_res), 28355714Skris lsc->sc_res); 28455714Skris return (error); 28555714Skris} 28655714Skris 28755714Skrisstatic struct dma_devinfo * 28855714Skrisdma_setup_dinfo(device_t dev, struct dma_softc *dsc, phandle_t node) 28955714Skris{ 29055714Skris struct dma_devinfo *ddi; 29155714Skris struct sbus_regs *reg; 29255714Skris uint32_t base, iv, *intr; 29355714Skris int i, nreg, nintr, slot, rslot; 29455714Skris 29555714Skris ddi = malloc(sizeof(*ddi), M_DEVBUF, M_WAITOK | M_ZERO); 29655714Skris if (ofw_bus_gen_setup_devinfo(&ddi->ddi_obdinfo, node) != 0) { 29755714Skris free(ddi, M_DEVBUF); 29855714Skris return (NULL); 29955714Skris } 30055714Skris resource_list_init(&ddi->ddi_rl); 30155714Skris slot = -1; 30255714Skris nreg = OF_getprop_alloc(node, "reg", sizeof(*reg), (void **)®); 30355714Skris if (nreg == -1) { 30455714Skris device_printf(dev, "<%s>: incomplete\n", 30555714Skris ddi->ddi_obdinfo.obd_name); 30655714Skris goto fail; 30755714Skris } 30855714Skris for (i = 0; i < nreg; i++) { 30955714Skris base = reg[i].sbr_offset; 31055714Skris if (SBUS_ABS(base)) { 31155714Skris rslot = SBUS_ABS_TO_SLOT(base); 31255714Skris base = SBUS_ABS_TO_OFFSET(base); 31355714Skris } else 31455714Skris rslot = reg[i].sbr_slot; 31555714Skris if (slot != -1 && slot != rslot) { 31655714Skris device_printf(dev, "<%s>: multiple slots\n", 31755714Skris ddi->ddi_obdinfo.obd_name); 31855714Skris free(reg, M_OFWPROP); 31955714Skris goto fail; 32055714Skris } 32155714Skris slot = rslot; 32255714Skris 32355714Skris resource_list_add(&ddi->ddi_rl, SYS_RES_MEMORY, i, base, 32455714Skris base + reg[i].sbr_size, reg[i].sbr_size); 32555714Skris } 32655714Skris free(reg, M_OFWPROP); 32755714Skris if (slot != dsc->sc_slot) { 32855714Skris device_printf(dev, "<%s>: parent and child slot do not match\n", 32955714Skris ddi->ddi_obdinfo.obd_name); 33055714Skris goto fail; 33155714Skris } 33255714Skris 33355714Skris /* 33455714Skris * The `interrupts' property contains the SBus interrupt level. 33555714Skris */ 33655714Skris nintr = OF_getprop_alloc(node, "interrupts", sizeof(*intr), 33755714Skris (void **)&intr); 33855714Skris if (nintr != -1) { 33955714Skris for (i = 0; i < nintr; i++) { 34055714Skris iv = intr[i]; 34155714Skris /* 34255714Skris * SBus card devices need the slot number encoded into 34355714Skris * the vector as this is generally not done. 34455714Skris */ 34555714Skris if ((iv & INTMAP_OBIO_MASK) == 0) 34655714Skris iv |= slot << 3; 34755714Skris /* Set the IGN as appropriate. */ 34855714Skris iv |= dsc->sc_ign << INTMAP_IGN_SHIFT; 34955714Skris resource_list_add(&ddi->ddi_rl, SYS_RES_IRQ, i, 35055714Skris iv, iv, 1); 35155714Skris } 35255714Skris free(intr, M_OFWPROP); 35355714Skris } 35455714Skris return (ddi); 35555714Skris 35655714Skris fail: 35755714Skris dma_destroy_dinfo(ddi); 35855714Skris return (NULL); 35955714Skris} 36055714Skris 36155714Skrisstatic void 36255714Skrisdma_destroy_dinfo(struct dma_devinfo *dinfo) 36355714Skris{ 36455714Skris 36555714Skris resource_list_free(&dinfo->ddi_rl); 36655714Skris ofw_bus_gen_destroy_devinfo(&dinfo->ddi_obdinfo); 36755714Skris free(dinfo, M_DEVBUF); 36855714Skris} 36955714Skris 37055714Skrisstatic int 37155714Skrisdma_print_child(device_t dev, device_t child) 37255714Skris{ 37355714Skris int rv; 37455714Skris 37555714Skris rv = bus_print_child_header(dev, child); 37655714Skris rv += dma_print_res(device_get_ivars(child)); 37755714Skris rv += bus_print_child_footer(dev, child); 37855714Skris return (rv); 37955714Skris} 38055714Skris 38155714Skrisstatic void 38255714Skrisdma_probe_nomatch(device_t dev, device_t child) 38355714Skris{ 38455714Skris const char *type; 38555714Skris 38655714Skris device_printf(dev, "<%s>", ofw_bus_get_name(child)); 38755714Skris dma_print_res(device_get_ivars(child)); 38855714Skris type = ofw_bus_get_type(child); 38955714Skris printf(" type %s (no driver attached)\n", 39055714Skris type != NULL ? type : "unknown"); 39155714Skris} 39255714Skris 39355714Skrisstatic struct resource_list * 39455714Skrisdma_get_resource_list(device_t dev, device_t child) 39555714Skris{ 39655714Skris struct dma_devinfo *ddi; 39755714Skris 39855714Skris ddi = device_get_ivars(child); 39955714Skris return (&ddi->ddi_rl); 40055714Skris} 40155714Skris 40255714Skrisstatic const struct ofw_bus_devinfo * 40355714Skrisdma_get_devinfo(device_t bus, device_t child) 40455714Skris{ 40555714Skris struct dma_devinfo *ddi; 40655714Skris 40755714Skris ddi = device_get_ivars(child); 40855714Skris return (&ddi->ddi_obdinfo); 40955714Skris} 41055714Skris 41155714Skrisstatic int 41255714Skrisdma_print_res(struct dma_devinfo *ddi) 41355714Skris{ 41455714Skris int rv; 41555714Skris 41655714Skris rv = 0; 41755714Skris rv += resource_list_print_type(&ddi->ddi_rl, "mem", SYS_RES_MEMORY, 41855714Skris "%#lx"); 41955714Skris rv += resource_list_print_type(&ddi->ddi_rl, "irq", SYS_RES_IRQ, "%ld"); 42055714Skris return (rv); 42155714Skris} 42255714Skris