sys/dev/ahci/ahci_generic.c

   1 /*-
   2  * Copyright (c) 2009-2012 Alexander Motin <mav@FreeBSD.org>
   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  *    without modification, immediately at the beginning of the file.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  */
  26
  27 #include <sys/cdefs.h>
  28 __FBSDID("$FreeBSD$");
  29
  30 #include "opt_acpi.h"
  31 #include "opt_platform.h"
  32
  33 #include <sys/param.h>
  34 #include <sys/module.h>
  35 #include <sys/systm.h>
  36 #include <sys/kernel.h>
  37 #include <sys/bus.h>
  38 #include <sys/conf.h>
  39 #include <sys/endian.h>
  40 #include <sys/malloc.h>
  41 #include <sys/lock.h>
  42 #include <sys/mutex.h>
  43 #include <sys/rman.h>
  44
  45 #include <machine/bus.h>
  46 #include <machine/resource.h>
  47
  48 #include <dev/ahci/ahci.h>
  49
  50 #ifdef DEV_ACPI
  51 #include <contrib/dev/acpica/include/acpi.h>
  52 #include <dev/acpica/acpivar.h>
  53
  54 #include <dev/pci/pcivar.h>
  55 #include <dev/pci/pcireg.h>
  56 #endif
  57
  58 #ifdef FDT
  59 #include <dev/ofw/ofw_bus.h>
  60 #include <dev/ofw/ofw_bus_subr.h>
  61
  62 static struct ofw_compat_data compat_data[] = {
  63         {"generic-ahci",                1},
  64         {"snps,dwc-ahci",               1},
  65         {"marvell,armada-3700-ahci",    1},
  66         {NULL,                          0}
  67 };
  68
  69 static int
  70 ahci_fdt_probe(device_t dev)
  71 {
  72         struct ahci_controller *ctlr = device_get_softc(dev);
  73         phandle_t node;
  74
  75         if (!ofw_bus_status_okay(dev))
  76                 return (ENXIO);
  77
  78         if (!ofw_bus_search_compatible(dev, compat_data)->ocd_data)
  79                 return (ENXIO);
  80
  81         device_set_desc_copy(dev, "AHCI SATA controller");
  82         node = ofw_bus_get_node(dev);
  83         ctlr->dma_coherent = OF_hasprop(node, "dma-coherent");
  84         return (BUS_PROBE_DEFAULT);
  85 }
  86 #endif
  87
  88 #ifdef DEV_ACPI
  89
  90 static const struct ahci_acpi_quirk {
  91         const char*     hid;
  92         u_int           quirks;
  93 } ahci_acpi_quirks[] = {
  94         { "NXP0004", AHCI_Q_NOPMP },
  95         { NULL, 0 }
  96 };
  97
  98
  99 static int
 100 ahci_acpi_probe(device_t dev)
 101 {
 102         struct ahci_controller *ctlr = device_get_softc(dev);
 103         ACPI_HANDLE h;
 104         int i;
 105
 106         if ((h = acpi_get_handle(dev)) == NULL)
 107                 return (ENXIO);
 108
 109         if (pci_get_class(dev) == PCIC_STORAGE &&
 110             pci_get_subclass(dev) == PCIS_STORAGE_SATA &&
 111             pci_get_progif(dev) == PCIP_STORAGE_SATA_AHCI_1_0) {
 112                 device_set_desc_copy(dev, "AHCI SATA controller");
 113                 if (ACPI_FAILURE(acpi_GetInteger(h, "_CCA",
 114                       &ctlr->dma_coherent)))
 115                         ctlr->dma_coherent = 0;
 116                 if (bootverbose)
 117                         device_printf(dev, "Bus is%s cache-coherent\n",
 118                           ctlr->dma_coherent ? "" : " not");
 119                 for (i = 0; ahci_acpi_quirks[i].hid != NULL; i++) {
 120                         if (acpi_MatchHid(h, ahci_acpi_quirks[i].hid) != ACPI_MATCHHID_NOMATCH) {
 121                                 ctlr->quirks = ahci_acpi_quirks[i].quirks;
 122                                 break;
 123                         }
 124                 }
 125                 return (BUS_PROBE_DEFAULT);
 126         }
 127
 128         return (ENXIO);
 129 }
 130 #endif
 131
 132 static int
 133 ahci_gen_ctlr_reset(device_t dev)
 134 {
 135
 136         return ahci_ctlr_reset(dev);
 137 }
 138
 139 static int
 140 ahci_gen_attach(device_t dev)
 141 {
 142         struct ahci_controller *ctlr = device_get_softc(dev);
 143         int     error;
 144
 145         ctlr->r_rid = 0;
 146         ctlr->r_mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &ctlr->r_rid,
 147             RF_ACTIVE);
 148         if (ctlr->r_mem == NULL)
 149                 return (ENXIO);
 150
 151         /* Setup controller defaults. */
 152         ctlr->numirqs = 1;
 153
 154         /* Reset controller */
 155         if ((error = ahci_gen_ctlr_reset(dev)) == 0)
 156                 error = ahci_attach(dev);
 157
 158         if (error != 0) {
 159                 if (ctlr->r_mem != NULL)
 160                         bus_release_resource(dev, SYS_RES_MEMORY, ctlr->r_rid,
 161                             ctlr->r_mem);
 162         }
 163         return error;
 164 }
 165
 166 static int
 167 ahci_gen_detach(device_t dev)
 168 {
 169
 170         ahci_detach(dev);
 171         return (0);
 172 }
 173
 174 #ifdef FDT
 175 static devclass_t ahci_gen_fdt_devclass;
 176 static device_method_t ahci_fdt_methods[] = {
 177         DEVMETHOD(device_probe,     ahci_fdt_probe),
 178         DEVMETHOD(device_attach,    ahci_gen_attach),
 179         DEVMETHOD(device_detach,    ahci_gen_detach),
 180         DEVMETHOD(bus_print_child,  ahci_print_child),
 181         DEVMETHOD(bus_alloc_resource,       ahci_alloc_resource),
 182         DEVMETHOD(bus_release_resource,     ahci_release_resource),
 183         DEVMETHOD(bus_setup_intr,   ahci_setup_intr),
 184         DEVMETHOD(bus_teardown_intr,ahci_teardown_intr),
 185         DEVMETHOD(bus_child_location_str, ahci_child_location_str),
 186         DEVMETHOD(bus_get_dma_tag,  ahci_get_dma_tag),
 187         DEVMETHOD_END
 188 };
 189 static driver_t ahci_fdt_driver = {
 190         "ahci",
 191         ahci_fdt_methods,
 192         sizeof(struct ahci_controller)
 193 };
 194 DRIVER_MODULE(ahci_fdt, simplebus, ahci_fdt_driver, ahci_gen_fdt_devclass,
 195     NULL, NULL);
 196 #endif
 197
 198 #ifdef DEV_ACPI
 199 static devclass_t ahci_gen_acpi_devclass;
 200 static device_method_t ahci_acpi_methods[] = {
 201         DEVMETHOD(device_probe,     ahci_acpi_probe),
 202         DEVMETHOD(device_attach,    ahci_gen_attach),
 203         DEVMETHOD(device_detach,    ahci_gen_detach),
 204         DEVMETHOD(bus_print_child,  ahci_print_child),
 205         DEVMETHOD(bus_alloc_resource,       ahci_alloc_resource),
 206         DEVMETHOD(bus_release_resource,     ahci_release_resource),
 207         DEVMETHOD(bus_setup_intr,   ahci_setup_intr),
 208         DEVMETHOD(bus_teardown_intr,ahci_teardown_intr),
 209         DEVMETHOD(bus_child_location_str, ahci_child_location_str),
 210         DEVMETHOD(bus_get_dma_tag,  ahci_get_dma_tag),
 211         DEVMETHOD_END
 212 };
 213 static driver_t ahci_acpi_driver = {
 214         "ahci",
 215         ahci_acpi_methods,
 216         sizeof(struct ahci_controller)
 217 };
 218 DRIVER_MODULE(ahci_acpi, acpi, ahci_acpi_driver, ahci_gen_acpi_devclass,
 219     NULL, NULL);
 220 #endif