/*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright 2002 by Peter Grehan. 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. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * 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 /* * PSIM local bus ATA controller */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * Define the iobus ata bus attachment. This creates a pseudo-bus that * the ATA device can be attached to */ static int ata_iobus_attach(device_t dev); static int ata_iobus_probe(device_t dev); static int ata_iobus_print_child(device_t dev, device_t child); struct resource *ata_iobus_alloc_resource(device_t, device_t, int, int *, rman_res_t, rman_res_t, rman_res_t, u_int); static int ata_iobus_release_resource(device_t, device_t, struct resource *); static device_method_t ata_iobus_methods[] = { /* Device interface */ DEVMETHOD(device_probe, ata_iobus_probe), DEVMETHOD(device_attach, ata_iobus_attach), DEVMETHOD(device_shutdown, bus_generic_shutdown), DEVMETHOD(device_suspend, bus_generic_suspend), DEVMETHOD(device_resume, bus_generic_resume), /* Bus methods */ DEVMETHOD(bus_print_child, ata_iobus_print_child), DEVMETHOD(bus_alloc_resource, ata_iobus_alloc_resource), DEVMETHOD(bus_release_resource, ata_iobus_release_resource), DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), DEVMETHOD_END }; static driver_t ata_iobus_driver = { "ataiobus", ata_iobus_methods, 0, }; DRIVER_MODULE(ataiobus, iobus, ata_iobus_driver, NULL, NULL); MODULE_DEPEND(ata, ata, 1, 1, 1); static int ata_iobus_probe(device_t dev) { char *type = iobus_get_name(dev); if (strncmp(type, "ata", 3) != 0) return (ENXIO); device_set_desc(dev, "PSIM ATA Controller"); return (0); } static int ata_iobus_attach(device_t dev) { /* * Add a single child per controller. Should be able * to add two */ device_add_child(dev, "ata", DEVICE_UNIT_ANY); bus_attach_children(dev); return (0); } static int ata_iobus_print_child(device_t dev, device_t child) { int retval = 0; retval += bus_print_child_header(dev, child); /* irq ? */ retval += bus_print_child_footer(dev, child); return (retval); } struct resource * ata_iobus_alloc_resource(device_t dev, device_t child, int type, int *rid, rman_res_t start, rman_res_t end, rman_res_t count, u_int flags) { struct resource *res = NULL; int myrid; u_int *ofw_regs; ofw_regs = iobus_get_regs(dev); /* * The reg array for the PSIM ata device has 6 start/size entries: * 0 - unused * 1/2/3 - unused * 4/5/6 - primary command * 7/8/9 - secondary command * 10/11/12 - primary control * 13/14/15 - secondary control * 16/17/18 - primary/secondary dma registers, unimplemented * * The resource values are calculated from these registers */ if (type == SYS_RES_IOPORT) { switch (*rid) { case ATA_IOADDR_RID: myrid = 0; start = ofw_regs[4]; end = start + ATA_IOSIZE - 1; count = ATA_IOSIZE; res = BUS_ALLOC_RESOURCE(device_get_parent(dev), child, SYS_RES_MEMORY, &myrid, start, end, count, flags); break; case ATA_CTLADDR_RID: myrid = 0; start = ofw_regs[10]; end = start + ATA_CTLIOSIZE - 1; count = ATA_CTLIOSIZE; res = BUS_ALLOC_RESOURCE(device_get_parent(dev), child, SYS_RES_MEMORY, &myrid, start, end, count, flags); break; case ATA_BMADDR_RID: /* DMA not properly supported by psim */ break; } return (res); } else if (type == SYS_RES_IRQ && *rid == ATA_IRQ_RID) { /* * Pass this on to the parent */ return (BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, SYS_RES_IRQ, rid, 0, ~0, 1, flags)); } else { return (NULL); } } static int ata_iobus_release_resource(device_t dev, device_t child, struct resource *r) { /* no hotplug... */ return (0); } /* * Define the actual ATA device. This is a sub-bus to the ata-iobus layer * to allow the higher layer bus to massage the resource allocation. */ static int ata_iobus_sub_probe(device_t dev); static int ata_iobus_sub_setmode(device_t dev, int target, int mode); static device_method_t ata_iobus_sub_methods[] = { /* Device interface */ DEVMETHOD(device_probe, ata_iobus_sub_probe), DEVMETHOD(device_attach, ata_attach), DEVMETHOD(device_detach, ata_detach), DEVMETHOD(device_resume, ata_resume), /* ATA interface */ DEVMETHOD(ata_setmode, ata_iobus_sub_setmode), DEVMETHOD_END }; static driver_t ata_iobus_sub_driver = { "ata", ata_iobus_sub_methods, sizeof(struct ata_channel), }; DRIVER_MODULE(ata, ataiobus, ata_iobus_sub_driver, NULL, NULL); static int ata_iobus_sub_probe(device_t dev) { struct ata_channel *ch = device_get_softc(dev); /* Only a single unit per controller thus far */ ch->unit = 0; ch->flags = (ATA_USE_16BIT|ATA_NO_SLAVE); ata_generic_hw(dev); return ata_probe(dev); } static int ata_iobus_sub_setmode(device_t parent, int target, int mode) { /* Only ever PIO mode here... */ return (ATA_PIO); }