1/*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2012 The FreeBSD Foundation 5 * All rights reserved. 6 * 7 * This software was developed by Oleksandr Rybalko under sponsorship 8 * from the FreeBSD Foundation. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32#include <sys/cdefs.h> 33__FBSDID("$FreeBSD$"); 34 35#include <sys/param.h> 36#include <sys/module.h> 37#include <sys/systm.h> 38#include <sys/kernel.h> 39#include <sys/ata.h> 40#include <sys/bus.h> 41#include <sys/endian.h> 42#include <sys/malloc.h> 43#include <sys/lock.h> 44#include <sys/mutex.h> 45#include <sys/sema.h> 46#include <sys/taskqueue.h> 47#include <vm/uma.h> 48#include <machine/stdarg.h> 49#include <machine/resource.h> 50#include <machine/bus.h> 51#include <sys/rman.h> 52#include <dev/pci/pcivar.h> 53#include <dev/pci/pcireg.h> 54#include <dev/ata/ata-all.h> 55#include <dev/ata/ata-pci.h> 56#include <ata_if.h> 57 58#include <dev/fdt/fdt_common.h> 59#include <dev/ofw/openfirm.h> 60#include <dev/ofw/ofw_bus.h> 61#include <dev/ofw/ofw_bus_subr.h> 62 63#include <machine/fdt.h> 64 65/* local prototypes */ 66static int imx_ata_ch_attach(device_t dev); 67static int imx_ata_setmode(device_t dev, int target, int mode); 68 69static int 70imx_ata_probe(device_t dev) 71{ 72 struct ata_pci_controller *ctrl; 73 74 if (!ofw_bus_status_okay(dev)) 75 return (ENXIO); 76 77 if (!ofw_bus_is_compatible(dev, "fsl,imx51-ata") && 78 !ofw_bus_is_compatible(dev, "fsl,imx53-ata")) 79 return (ENXIO); 80 81 ctrl = device_get_softc(dev); 82 83 device_set_desc(dev, "Freescale Integrated PATA Controller"); 84 return (BUS_PROBE_LOW_PRIORITY); 85} 86 87static void 88imx_ata_intr(void *data) 89{ 90 struct ata_pci_controller *ctrl = data; 91 92 bus_write_2(ctrl->r_res1, 0x28, bus_read_2(ctrl->r_res1, 0x28)); 93 ctrl->interrupt[0].function(ctrl->interrupt[0].argument); 94} 95 96static int 97imx_ata_attach(device_t dev) 98{ 99 struct ata_pci_controller *ctrl; 100 device_t child; 101 int unit; 102 103 ctrl = device_get_softc(dev); 104 /* do chipset specific setups only needed once */ 105 ctrl->legacy = ata_legacy(dev); 106 ctrl->channels = 1; 107 ctrl->ichannels = -1; 108 ctrl->ch_attach = ata_pci_ch_attach; 109 ctrl->ch_detach = ata_pci_ch_detach; 110 ctrl->dev = dev; 111 112 ctrl->r_type1 = SYS_RES_MEMORY; 113 ctrl->r_rid1 = 0; 114 ctrl->r_res1 = bus_alloc_resource_any(dev, ctrl->r_type1, 115 &ctrl->r_rid1, RF_ACTIVE); 116 117 if (ata_setup_interrupt(dev, imx_ata_intr)) { 118 device_printf(dev, "failed to setup interrupt\n"); 119 return ENXIO; 120 } 121 122 ctrl->channels = 1; 123 124 ctrl->ch_attach = imx_ata_ch_attach; 125 ctrl->setmode = imx_ata_setmode; 126 127 /* attach all channels on this controller */ 128 unit = 0; 129 child = device_add_child(dev, "ata", ((unit == 0) && ctrl->legacy) ? 130 unit : devclass_find_free_unit(ata_devclass, 2)); 131 if (child == NULL) 132 device_printf(dev, "failed to add ata child device\n"); 133 else 134 device_set_ivars(child, (void *)(intptr_t)unit); 135 136 bus_generic_attach(dev); 137 return 0; 138} 139 140static int 141imx_ata_ch_attach(device_t dev) 142{ 143 struct ata_pci_controller *ctrl; 144 struct ata_channel *ch; 145 int i; 146 147 ctrl = device_get_softc(device_get_parent(dev)); 148 ch = device_get_softc(dev); 149 for (i = ATA_DATA; i < ATA_MAX_RES; i++) 150 ch->r_io[i].res = ctrl->r_res1; 151 152 bus_write_2(ctrl->r_res1, 0x24, 0x80); 153 DELAY(100); 154 bus_write_2(ctrl->r_res1, 0x24, 0xc0); 155 DELAY(100); 156 157 158 /* Write TIME_OFF/ON/1/2W */ 159 bus_write_1(ctrl->r_res1, 0x00, 3); 160 bus_write_1(ctrl->r_res1, 0x01, 3); 161 bus_write_1(ctrl->r_res1, 0x02, (25 + 15) / 15); 162 bus_write_1(ctrl->r_res1, 0x03, (70 + 15) / 15); 163 164 /* Write TIME_2R/AX/RDX/4 */ 165 bus_write_1(ctrl->r_res1, 0x04, (70 + 15) / 15); 166 bus_write_1(ctrl->r_res1, 0x05, (50 + 15) / 15 + 2); 167 bus_write_1(ctrl->r_res1, 0x06, 1); 168 bus_write_1(ctrl->r_res1, 0x07, (10 + 15) / 15); 169 170 /* Write TIME_9 ; the rest of timing registers is irrelevant for PIO */ 171 bus_write_1(ctrl->r_res1, 0x08, (10 + 15) / 15); 172 173 bus_write_2(ctrl->r_res1, 0x24, 0xc1); 174 DELAY(30000); 175 176 /* setup ATA registers */ 177 ch->r_io[ATA_DATA ].offset = 0xa0; 178 ch->r_io[ATA_FEATURE].offset = 0xa4; 179 ch->r_io[ATA_ERROR ].offset = 0xa4; 180 ch->r_io[ATA_COUNT ].offset = 0xa8; 181 ch->r_io[ATA_SECTOR ].offset = 0xac; 182 ch->r_io[ATA_CYL_LSB].offset = 0xb0; 183 ch->r_io[ATA_CYL_MSB].offset = 0xb4; 184 ch->r_io[ATA_DRIVE ].offset = 0xb8; 185 ch->r_io[ATA_COMMAND].offset = 0xbc; 186 187 ch->r_io[ATA_STATUS ].offset = 0xbc; 188 ch->r_io[ATA_ALTSTAT].offset = 0xd8; 189 ch->r_io[ATA_CONTROL].offset = 0xd8; 190 191 ata_pci_hw(dev); 192 193 ch->flags |= ATA_NO_SLAVE; 194 ch->flags |= ATA_USE_16BIT; 195 ch->flags |= ATA_CHECKS_CABLE; 196 ch->flags |= ATA_KNOWN_PRESENCE; 197 198 /* Clear pending interrupts. */ 199 bus_write_2(ctrl->r_res1, 0x28, 0xf8); 200 /* Enable all, but Idle interrupts. */ 201 bus_write_2(ctrl->r_res1, 0x2c, 0x88); 202 203 return 0; 204} 205 206static int 207imx_ata_setmode(device_t dev, int target, int mode) 208{ 209 210 return (min(mode, ATA_PIO4)); 211} 212 213static device_method_t imx_ata_methods[] = { 214 DEVMETHOD(device_probe, imx_ata_probe), 215 DEVMETHOD(device_attach, imx_ata_attach), 216 DEVMETHOD(device_detach, ata_pci_detach), 217 DEVMETHOD(device_suspend, ata_pci_suspend), 218 DEVMETHOD(device_resume, ata_pci_resume), 219 DEVMETHOD(device_shutdown, bus_generic_shutdown), 220 DEVMETHOD(bus_read_ivar, ata_pci_read_ivar), 221 DEVMETHOD(bus_write_ivar, ata_pci_write_ivar), 222 DEVMETHOD(bus_alloc_resource, ata_pci_alloc_resource), 223 DEVMETHOD(bus_release_resource, ata_pci_release_resource), 224 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 225 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 226 DEVMETHOD(bus_setup_intr, ata_pci_setup_intr), 227 DEVMETHOD(bus_teardown_intr, ata_pci_teardown_intr), 228 DEVMETHOD(pci_read_config, ata_pci_read_config), 229 DEVMETHOD(pci_write_config, ata_pci_write_config), 230 DEVMETHOD(bus_print_child, ata_pci_print_child), 231 DEVMETHOD(bus_child_location_str, ata_pci_child_location_str), 232 DEVMETHOD_END 233}; 234static driver_t imx_ata_driver = { 235 "atapci", 236 imx_ata_methods, 237 sizeof(struct ata_pci_controller) 238}; 239DRIVER_MODULE(imx_ata, simplebus, imx_ata_driver, ata_pci_devclass, NULL, 240 NULL); 241MODULE_VERSION(imx_ata, 1); 242MODULE_DEPEND(imx_ata, ata, 1, 1, 1); 243MODULE_DEPEND(imx_ata, atapci, 1, 1, 1); 244