1/*- 2 * Copyright (c) 2009 Neelkanth Natu 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/param.h> 28#include <sys/kernel.h> 29#include <sys/systm.h> 30#include <sys/module.h> 31#include <sys/bus.h> 32#include <sys/rman.h> 33#include <sys/lock.h> 34#include <sys/mutex.h> 35#include <sys/sema.h> 36#include <sys/taskqueue.h> 37 38#include <machine/bus.h> 39 40#include <vm/uma.h> 41 42#include <sys/ata.h> 43#include <dev/ata/ata-all.h> 44 45#include <machine/resource.h> 46 47__FBSDID("$FreeBSD$"); 48 49static int 50ata_zbbus_probe(device_t dev) 51{ 52 53 return (ata_probe(dev)); 54} 55 56static int 57ata_zbbus_attach(device_t dev) 58{ 59 int i, rid, regshift, regoffset; 60 struct ata_channel *ch; 61 struct resource *io; 62 63 ch = device_get_softc(dev); 64 65 if (ch->attached) 66 return (0); 67 ch->attached = 1; 68 69 rid = 0; 70 io = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 0, ~0, 1, RF_ACTIVE); 71 if (io == NULL) 72 return (ENXIO); 73 74 /* 75 * SWARM needs an address shift of 5 when accessing ATA registers. 76 * 77 * For e.g. an access to register 4 actually needs an address 78 * of (4 << 5) to be output on the generic bus. 79 */ 80 regshift = 5; 81 resource_int_value(device_get_name(dev), device_get_unit(dev), 82 "regshift", ®shift); 83 if (regshift && bootverbose) 84 device_printf(dev, "using a register shift of %d\n", regshift); 85 86 regoffset = 0x1F0; 87 resource_int_value(device_get_name(dev), device_get_unit(dev), 88 "regoffset", ®offset); 89 if (regoffset && bootverbose) { 90 device_printf(dev, "using a register offset of 0x%0x\n", 91 regoffset); 92 } 93 94 /* setup the ata register addresses */ 95 for (i = ATA_DATA; i <= ATA_COMMAND; ++i) { 96 ch->r_io[i].res = io; 97 ch->r_io[i].offset = (regoffset + i) << regshift; 98 } 99 100 ch->r_io[ATA_CONTROL].res = io; 101 ch->r_io[ATA_CONTROL].offset = (regoffset + ATA_CTLOFFSET) << regshift; 102 ch->r_io[ATA_IDX_ADDR].res = io; /* XXX what is this used for */ 103 ata_default_registers(dev); 104 105 /* initialize softc for this channel */ 106 ch->unit = 0; 107 ch->flags |= ATA_USE_16BIT; 108 ata_generic_hw(dev); 109 110 return (ata_attach(dev)); 111} 112 113static int 114ata_zbbus_detach(device_t dev) 115{ 116 int error; 117 struct ata_channel *ch = device_get_softc(dev); 118 119 if (!ch->attached) 120 return (0); 121 ch->attached = 0; 122 123 error = ata_detach(dev); 124 125 bus_release_resource(dev, SYS_RES_MEMORY, 0, 126 ch->r_io[ATA_IDX_ADDR].res); 127 128 return (error); 129} 130 131static int 132ata_zbbus_suspend(device_t dev) 133{ 134 struct ata_channel *ch = device_get_softc(dev); 135 136 if (!ch->attached) 137 return (0); 138 139 return (ata_suspend(dev)); 140} 141 142static int 143ata_zbbus_resume(device_t dev) 144{ 145 struct ata_channel *ch = device_get_softc(dev); 146 147 if (!ch->attached) 148 return (0); 149 150 return (ata_resume(dev)); 151} 152 153static device_method_t ata_zbbus_methods[] = { 154 /* device interface */ 155 DEVMETHOD(device_probe, ata_zbbus_probe), 156 DEVMETHOD(device_attach, ata_zbbus_attach), 157 DEVMETHOD(device_detach, ata_zbbus_detach), 158 DEVMETHOD(device_suspend, ata_zbbus_suspend), 159 DEVMETHOD(device_resume, ata_zbbus_resume), 160 161 { 0, 0 } 162}; 163 164static driver_t ata_zbbus_driver = { 165 "ata", 166 ata_zbbus_methods, 167 sizeof(struct ata_channel) 168}; 169 170DRIVER_MODULE(ata, zbbus, ata_zbbus_driver, ata_devclass, 0, 0); 171