Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 1 | /* |
| 2 | * libata-acpi.c |
| 3 | * Provides ACPI support for PATA/SATA. |
| 4 | * |
| 5 | * Copyright (C) 2006 Intel Corp. |
| 6 | * Copyright (C) 2006 Randy Dunlap |
| 7 | */ |
| 8 | |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 9 | #include <linux/module.h> |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 10 | #include <linux/ata.h> |
| 11 | #include <linux/delay.h> |
| 12 | #include <linux/device.h> |
| 13 | #include <linux/errno.h> |
| 14 | #include <linux/kernel.h> |
| 15 | #include <linux/acpi.h> |
| 16 | #include <linux/libata.h> |
| 17 | #include <linux/pci.h> |
Matthew Garrett | 237d844 | 2007-10-03 01:24:16 +0100 | [diff] [blame] | 18 | #include <scsi/scsi_device.h> |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 19 | #include "libata.h" |
| 20 | |
| 21 | #include <acpi/acpi_bus.h> |
| 22 | #include <acpi/acnames.h> |
| 23 | #include <acpi/acnamesp.h> |
| 24 | #include <acpi/acparser.h> |
| 25 | #include <acpi/acexcep.h> |
| 26 | #include <acpi/acmacros.h> |
| 27 | #include <acpi/actypes.h> |
| 28 | |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 29 | enum { |
| 30 | ATA_ACPI_FILTER_SETXFER = 1 << 0, |
| 31 | ATA_ACPI_FILTER_LOCK = 1 << 1, |
Tejun Heo | b344991 | 2008-07-06 23:15:03 +0900 | [diff] [blame^] | 32 | ATA_ACPI_FILTER_DIPM = 1 << 2, |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 33 | |
| 34 | ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER | |
Tejun Heo | b344991 | 2008-07-06 23:15:03 +0900 | [diff] [blame^] | 35 | ATA_ACPI_FILTER_LOCK | |
| 36 | ATA_ACPI_FILTER_DIPM, |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 37 | }; |
| 38 | |
| 39 | static unsigned int ata_acpi_gtf_filter = ATA_ACPI_FILTER_DEFAULT; |
| 40 | module_param_named(acpi_gtf_filter, ata_acpi_gtf_filter, int, 0644); |
Tejun Heo | b344991 | 2008-07-06 23:15:03 +0900 | [diff] [blame^] | 41 | MODULE_PARM_DESC(acpi_gtf_filter, "filter mask for ACPI _GTF commands, set to filter out (0x1=set xfermode, 0x2=lock/freeze lock, 0x4=DIPM)"); |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 42 | |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 43 | #define NO_PORT_MULT 0xffff |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 44 | #define SATA_ADR(root, pmp) (((root) << 16) | (pmp)) |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 45 | |
| 46 | #define REGS_PER_GTF 7 |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 47 | struct ata_acpi_gtf { |
| 48 | u8 tf[REGS_PER_GTF]; /* regs. 0x1f1 - 0x1f7 */ |
| 49 | } __packed; |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 50 | |
Alan Cox | ca42663 | 2007-03-08 23:13:50 +0000 | [diff] [blame] | 51 | /* |
| 52 | * Helper - belongs in the PCI layer somewhere eventually |
| 53 | */ |
| 54 | static int is_pci_dev(struct device *dev) |
| 55 | { |
| 56 | return (dev->bus == &pci_bus_type); |
| 57 | } |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 58 | |
Tejun Heo | 398e078 | 2007-12-15 15:05:03 +0900 | [diff] [blame] | 59 | static void ata_acpi_clear_gtf(struct ata_device *dev) |
| 60 | { |
| 61 | kfree(dev->gtf_cache); |
| 62 | dev->gtf_cache = NULL; |
| 63 | } |
| 64 | |
Tejun Heo | d0df8b5d | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 65 | /** |
| 66 | * ata_acpi_associate_sata_port - associate SATA port with ACPI objects |
| 67 | * @ap: target SATA port |
| 68 | * |
| 69 | * Look up ACPI objects associated with @ap and initialize acpi_handle |
| 70 | * fields of @ap, the port and devices accordingly. |
| 71 | * |
| 72 | * LOCKING: |
| 73 | * EH context. |
| 74 | * |
| 75 | * RETURNS: |
| 76 | * 0 on success, -errno on failure. |
| 77 | */ |
| 78 | void ata_acpi_associate_sata_port(struct ata_port *ap) |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 79 | { |
Tejun Heo | d0df8b5d | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 80 | WARN_ON(!(ap->flags & ATA_FLAG_ACPI_SATA)); |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 81 | |
Tejun Heo | 071f44b | 2008-04-07 22:47:22 +0900 | [diff] [blame] | 82 | if (!sata_pmp_attached(ap)) { |
Tejun Heo | d0df8b5d | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 83 | acpi_integer adr = SATA_ADR(ap->port_no, NO_PORT_MULT); |
| 84 | |
| 85 | ap->link.device->acpi_handle = |
| 86 | acpi_get_child(ap->host->acpi_handle, adr); |
| 87 | } else { |
| 88 | struct ata_link *link; |
| 89 | |
| 90 | ap->link.device->acpi_handle = NULL; |
| 91 | |
| 92 | ata_port_for_each_link(link, ap) { |
| 93 | acpi_integer adr = SATA_ADR(ap->port_no, link->pmp); |
| 94 | |
| 95 | link->device->acpi_handle = |
| 96 | acpi_get_child(ap->host->acpi_handle, adr); |
| 97 | } |
| 98 | } |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 99 | } |
Alan Cox | ca42663 | 2007-03-08 23:13:50 +0000 | [diff] [blame] | 100 | |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 101 | static void ata_acpi_associate_ide_port(struct ata_port *ap) |
| 102 | { |
| 103 | int max_devices, i; |
| 104 | |
| 105 | ap->acpi_handle = acpi_get_child(ap->host->acpi_handle, ap->port_no); |
| 106 | if (!ap->acpi_handle) |
| 107 | return; |
| 108 | |
| 109 | max_devices = 1; |
| 110 | if (ap->flags & ATA_FLAG_SLAVE_POSS) |
| 111 | max_devices++; |
| 112 | |
| 113 | for (i = 0; i < max_devices; i++) { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 114 | struct ata_device *dev = &ap->link.device[i]; |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 115 | |
| 116 | dev->acpi_handle = acpi_get_child(ap->acpi_handle, i); |
| 117 | } |
Tejun Heo | c05e6ff | 2007-12-15 15:05:02 +0900 | [diff] [blame] | 118 | |
| 119 | if (ata_acpi_gtm(ap, &ap->__acpi_init_gtm) == 0) |
| 120 | ap->pflags |= ATA_PFLAG_INIT_GTM_VALID; |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 121 | } |
| 122 | |
Holger Macht | 664d080 | 2008-06-03 20:27:59 +0200 | [diff] [blame] | 123 | static void ata_acpi_eject_device(acpi_handle handle) |
| 124 | { |
| 125 | struct acpi_object_list arg_list; |
| 126 | union acpi_object arg; |
| 127 | |
| 128 | arg_list.count = 1; |
| 129 | arg_list.pointer = &arg; |
| 130 | arg.type = ACPI_TYPE_INTEGER; |
| 131 | arg.integer.value = 1; |
| 132 | |
| 133 | if (ACPI_FAILURE(acpi_evaluate_object(handle, "_EJ0", |
| 134 | &arg_list, NULL))) |
| 135 | printk(KERN_ERR "Failed to evaluate _EJ0!\n"); |
| 136 | } |
| 137 | |
| 138 | /* @ap and @dev are the same as ata_acpi_handle_hotplug() */ |
| 139 | static void ata_acpi_detach_device(struct ata_port *ap, struct ata_device *dev) |
| 140 | { |
| 141 | if (dev) |
| 142 | dev->flags |= ATA_DFLAG_DETACH; |
| 143 | else { |
| 144 | struct ata_link *tlink; |
| 145 | struct ata_device *tdev; |
| 146 | |
| 147 | ata_port_for_each_link(tlink, ap) |
| 148 | ata_link_for_each_dev(tdev, tlink) |
| 149 | tdev->flags |= ATA_DFLAG_DETACH; |
| 150 | } |
| 151 | |
| 152 | ata_port_schedule_eh(ap); |
| 153 | } |
| 154 | |
| 155 | /** |
| 156 | * ata_acpi_handle_hotplug - ACPI event handler backend |
| 157 | * @ap: ATA port ACPI event occurred |
| 158 | * @dev: ATA device ACPI event occurred (can be NULL) |
| 159 | * @event: ACPI event which occurred |
| 160 | * @is_dock_event: boolean indicating whether the event was a dock one |
| 161 | * |
| 162 | * All ACPI bay / device realted events end up in this function. If |
| 163 | * the event is port-wide @dev is NULL. If the event is specific to a |
| 164 | * device, @dev points to it. |
| 165 | * |
| 166 | * Hotplug (as opposed to unplug) notification is always handled as |
| 167 | * port-wide while unplug only kills the target device on device-wide |
| 168 | * event. |
| 169 | * |
| 170 | * LOCKING: |
| 171 | * ACPI notify handler context. May sleep. |
| 172 | */ |
| 173 | static void ata_acpi_handle_hotplug(struct ata_port *ap, struct ata_device *dev, |
| 174 | u32 event, int is_dock_event) |
Matthew Garrett | 237d844 | 2007-10-03 01:24:16 +0100 | [diff] [blame] | 175 | { |
| 176 | char event_string[12]; |
| 177 | char *envp[] = { event_string, NULL }; |
Holger Macht | 664d080 | 2008-06-03 20:27:59 +0200 | [diff] [blame] | 178 | struct ata_eh_info *ehi = &ap->link.eh_info; |
Tejun Heo | 233f112 | 2008-03-12 14:24:43 +0900 | [diff] [blame] | 179 | struct kobject *kobj = NULL; |
| 180 | int wait = 0; |
| 181 | unsigned long flags; |
Matthew Garrett | ae6c23c | 2008-05-19 17:29:34 +0100 | [diff] [blame] | 182 | acpi_handle handle, tmphandle; |
| 183 | unsigned long sta; |
| 184 | acpi_status status; |
Jeff Garzik | c85665f | 2008-05-19 17:56:10 -0400 | [diff] [blame] | 185 | |
Holger Macht | 664d080 | 2008-06-03 20:27:59 +0200 | [diff] [blame] | 186 | if (dev) { |
| 187 | if (dev->sdev) |
| 188 | kobj = &dev->sdev->sdev_gendev.kobj; |
Matthew Garrett | ae6c23c | 2008-05-19 17:29:34 +0100 | [diff] [blame] | 189 | handle = dev->acpi_handle; |
Holger Macht | 664d080 | 2008-06-03 20:27:59 +0200 | [diff] [blame] | 190 | } else { |
| 191 | kobj = &ap->dev->kobj; |
Matthew Garrett | ae6c23c | 2008-05-19 17:29:34 +0100 | [diff] [blame] | 192 | handle = ap->acpi_handle; |
Holger Macht | 664d080 | 2008-06-03 20:27:59 +0200 | [diff] [blame] | 193 | } |
Matthew Garrett | ae6c23c | 2008-05-19 17:29:34 +0100 | [diff] [blame] | 194 | |
| 195 | status = acpi_get_handle(handle, "_EJ0", &tmphandle); |
Holger Macht | 664d080 | 2008-06-03 20:27:59 +0200 | [diff] [blame] | 196 | if (ACPI_FAILURE(status)) |
| 197 | /* This device does not support hotplug */ |
Matthew Garrett | ae6c23c | 2008-05-19 17:29:34 +0100 | [diff] [blame] | 198 | return; |
Matthew Garrett | ae6c23c | 2008-05-19 17:29:34 +0100 | [diff] [blame] | 199 | |
Holger Macht | 664d080 | 2008-06-03 20:27:59 +0200 | [diff] [blame] | 200 | spin_lock_irqsave(ap->lock, flags); |
Matthew Garrett | ae6c23c | 2008-05-19 17:29:34 +0100 | [diff] [blame] | 201 | |
Tejun Heo | 233f112 | 2008-03-12 14:24:43 +0900 | [diff] [blame] | 202 | switch (event) { |
| 203 | case ACPI_NOTIFY_BUS_CHECK: |
| 204 | case ACPI_NOTIFY_DEVICE_CHECK: |
| 205 | ata_ehi_push_desc(ehi, "ACPI event"); |
Jeff Garzik | c85665f | 2008-05-19 17:56:10 -0400 | [diff] [blame] | 206 | |
Holger Macht | 664d080 | 2008-06-03 20:27:59 +0200 | [diff] [blame] | 207 | status = acpi_evaluate_integer(handle, "_STA", NULL, &sta); |
| 208 | if (ACPI_FAILURE(status)) { |
| 209 | ata_port_printk(ap, KERN_ERR, |
| 210 | "acpi: failed to determine bay status (0x%x)\n", |
| 211 | status); |
| 212 | break; |
| 213 | } |
| 214 | |
| 215 | if (sta) { |
Matthew Garrett | ae6c23c | 2008-05-19 17:29:34 +0100 | [diff] [blame] | 216 | ata_ehi_hotplugged(ehi); |
| 217 | ata_port_freeze(ap); |
Holger Macht | 664d080 | 2008-06-03 20:27:59 +0200 | [diff] [blame] | 218 | } else { |
| 219 | /* The device has gone - unplug it */ |
| 220 | ata_acpi_detach_device(ap, dev); |
| 221 | wait = 1; |
Tejun Heo | 233f112 | 2008-03-12 14:24:43 +0900 | [diff] [blame] | 222 | } |
Holger Macht | 664d080 | 2008-06-03 20:27:59 +0200 | [diff] [blame] | 223 | break; |
| 224 | case ACPI_NOTIFY_EJECT_REQUEST: |
| 225 | ata_ehi_push_desc(ehi, "ACPI event"); |
| 226 | |
| 227 | if (!is_dock_event) |
| 228 | break; |
| 229 | |
| 230 | /* undock event - immediate unplug */ |
| 231 | ata_acpi_detach_device(ap, dev); |
| 232 | wait = 1; |
| 233 | break; |
Matthew Garrett | 237d844 | 2007-10-03 01:24:16 +0100 | [diff] [blame] | 234 | } |
| 235 | |
Holger Macht | 664d080 | 2008-06-03 20:27:59 +0200 | [diff] [blame] | 236 | /* make sure kobj doesn't go away while ap->lock is released */ |
| 237 | kobject_get(kobj); |
| 238 | |
Matthew Garrett | ae6c23c | 2008-05-19 17:29:34 +0100 | [diff] [blame] | 239 | spin_unlock_irqrestore(ap->lock, flags); |
| 240 | |
Holger Macht | 664d080 | 2008-06-03 20:27:59 +0200 | [diff] [blame] | 241 | if (wait) { |
Matthew Garrett | ae6c23c | 2008-05-19 17:29:34 +0100 | [diff] [blame] | 242 | ata_port_wait_eh(ap); |
Holger Macht | 664d080 | 2008-06-03 20:27:59 +0200 | [diff] [blame] | 243 | ata_acpi_eject_device(handle); |
| 244 | } |
Matthew Garrett | ae6c23c | 2008-05-19 17:29:34 +0100 | [diff] [blame] | 245 | |
Holger Macht | 664d080 | 2008-06-03 20:27:59 +0200 | [diff] [blame] | 246 | if (kobj && !is_dock_event) { |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 247 | sprintf(event_string, "BAY_EVENT=%d", event); |
Matthew Garrett | 237d844 | 2007-10-03 01:24:16 +0100 | [diff] [blame] | 248 | kobject_uevent_env(kobj, KOBJ_CHANGE, envp); |
| 249 | } |
Holger Macht | 664d080 | 2008-06-03 20:27:59 +0200 | [diff] [blame] | 250 | |
| 251 | kobject_put(kobj); |
| 252 | } |
| 253 | |
| 254 | static void ata_acpi_dev_notify_dock(acpi_handle handle, u32 event, void *data) |
| 255 | { |
| 256 | struct ata_device *dev = data; |
| 257 | |
| 258 | ata_acpi_handle_hotplug(dev->link->ap, dev, event, 1); |
| 259 | } |
| 260 | |
| 261 | static void ata_acpi_ap_notify_dock(acpi_handle handle, u32 event, void *data) |
| 262 | { |
| 263 | struct ata_port *ap = data; |
| 264 | |
| 265 | ata_acpi_handle_hotplug(ap, NULL, event, 1); |
Matthew Garrett | 237d844 | 2007-10-03 01:24:16 +0100 | [diff] [blame] | 266 | } |
| 267 | |
| 268 | static void ata_acpi_dev_notify(acpi_handle handle, u32 event, void *data) |
| 269 | { |
| 270 | struct ata_device *dev = data; |
Matthew Garrett | 237d844 | 2007-10-03 01:24:16 +0100 | [diff] [blame] | 271 | |
Holger Macht | 664d080 | 2008-06-03 20:27:59 +0200 | [diff] [blame] | 272 | ata_acpi_handle_hotplug(dev->link->ap, dev, event, 0); |
Matthew Garrett | 237d844 | 2007-10-03 01:24:16 +0100 | [diff] [blame] | 273 | } |
| 274 | |
| 275 | static void ata_acpi_ap_notify(acpi_handle handle, u32 event, void *data) |
| 276 | { |
| 277 | struct ata_port *ap = data; |
| 278 | |
Holger Macht | 664d080 | 2008-06-03 20:27:59 +0200 | [diff] [blame] | 279 | ata_acpi_handle_hotplug(ap, NULL, event, 0); |
Matthew Garrett | 237d844 | 2007-10-03 01:24:16 +0100 | [diff] [blame] | 280 | } |
| 281 | |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 282 | /** |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 283 | * ata_acpi_associate - associate ATA host with ACPI objects |
| 284 | * @host: target ATA host |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 285 | * |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 286 | * Look up ACPI objects associated with @host and initialize |
| 287 | * acpi_handle fields of @host, its ports and devices accordingly. |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 288 | * |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 289 | * LOCKING: |
| 290 | * EH context. |
| 291 | * |
| 292 | * RETURNS: |
| 293 | * 0 on success, -errno on failure. |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 294 | */ |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 295 | void ata_acpi_associate(struct ata_host *host) |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 296 | { |
Matthew Garrett | 237d844 | 2007-10-03 01:24:16 +0100 | [diff] [blame] | 297 | int i, j; |
Alan Cox | ca42663 | 2007-03-08 23:13:50 +0000 | [diff] [blame] | 298 | |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 299 | if (!is_pci_dev(host->dev) || libata_noacpi) |
| 300 | return; |
Alan Cox | ca42663 | 2007-03-08 23:13:50 +0000 | [diff] [blame] | 301 | |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 302 | host->acpi_handle = DEVICE_ACPI_HANDLE(host->dev); |
| 303 | if (!host->acpi_handle) |
| 304 | return; |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 305 | |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 306 | for (i = 0; i < host->n_ports; i++) { |
| 307 | struct ata_port *ap = host->ports[i]; |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 308 | |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 309 | if (host->ports[0]->flags & ATA_FLAG_ACPI_SATA) |
| 310 | ata_acpi_associate_sata_port(ap); |
| 311 | else |
| 312 | ata_acpi_associate_ide_port(ap); |
Matthew Garrett | 237d844 | 2007-10-03 01:24:16 +0100 | [diff] [blame] | 313 | |
Tejun Heo | 233f112 | 2008-03-12 14:24:43 +0900 | [diff] [blame] | 314 | if (ap->acpi_handle) { |
| 315 | acpi_install_notify_handler(ap->acpi_handle, |
| 316 | ACPI_SYSTEM_NOTIFY, |
| 317 | ata_acpi_ap_notify, ap); |
Tejun Heo | 233f112 | 2008-03-12 14:24:43 +0900 | [diff] [blame] | 318 | /* we might be on a docking station */ |
| 319 | register_hotplug_dock_device(ap->acpi_handle, |
Holger Macht | 664d080 | 2008-06-03 20:27:59 +0200 | [diff] [blame] | 320 | ata_acpi_ap_notify_dock, ap); |
Tejun Heo | 233f112 | 2008-03-12 14:24:43 +0900 | [diff] [blame] | 321 | } |
Matthew Garrett | 237d844 | 2007-10-03 01:24:16 +0100 | [diff] [blame] | 322 | |
| 323 | for (j = 0; j < ata_link_max_devices(&ap->link); j++) { |
| 324 | struct ata_device *dev = &ap->link.device[j]; |
| 325 | |
Tejun Heo | 233f112 | 2008-03-12 14:24:43 +0900 | [diff] [blame] | 326 | if (dev->acpi_handle) { |
| 327 | acpi_install_notify_handler(dev->acpi_handle, |
| 328 | ACPI_SYSTEM_NOTIFY, |
| 329 | ata_acpi_dev_notify, dev); |
Tejun Heo | 233f112 | 2008-03-12 14:24:43 +0900 | [diff] [blame] | 330 | /* we might be on a docking station */ |
| 331 | register_hotplug_dock_device(dev->acpi_handle, |
Holger Macht | 664d080 | 2008-06-03 20:27:59 +0200 | [diff] [blame] | 332 | ata_acpi_dev_notify_dock, dev); |
Tejun Heo | 233f112 | 2008-03-12 14:24:43 +0900 | [diff] [blame] | 333 | } |
Matthew Garrett | 237d844 | 2007-10-03 01:24:16 +0100 | [diff] [blame] | 334 | } |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 335 | } |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 336 | } |
| 337 | |
| 338 | /** |
Tejun Heo | 562f0c2 | 2007-12-15 15:05:01 +0900 | [diff] [blame] | 339 | * ata_acpi_dissociate - dissociate ATA host from ACPI objects |
| 340 | * @host: target ATA host |
| 341 | * |
| 342 | * This function is called during driver detach after the whole host |
| 343 | * is shut down. |
| 344 | * |
| 345 | * LOCKING: |
| 346 | * EH context. |
| 347 | */ |
| 348 | void ata_acpi_dissociate(struct ata_host *host) |
| 349 | { |
Tejun Heo | c05e6ff | 2007-12-15 15:05:02 +0900 | [diff] [blame] | 350 | int i; |
| 351 | |
| 352 | /* Restore initial _GTM values so that driver which attaches |
| 353 | * afterward can use them too. |
| 354 | */ |
| 355 | for (i = 0; i < host->n_ports; i++) { |
| 356 | struct ata_port *ap = host->ports[i]; |
| 357 | const struct ata_acpi_gtm *gtm = ata_acpi_init_gtm(ap); |
| 358 | |
| 359 | if (ap->acpi_handle && gtm) |
| 360 | ata_acpi_stm(ap, gtm); |
| 361 | } |
Tejun Heo | 562f0c2 | 2007-12-15 15:05:01 +0900 | [diff] [blame] | 362 | } |
| 363 | |
| 364 | /** |
Tejun Heo | 64578a3 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 365 | * ata_acpi_gtm - execute _GTM |
| 366 | * @ap: target ATA port |
| 367 | * @gtm: out parameter for _GTM result |
| 368 | * |
| 369 | * Evaluate _GTM and store the result in @gtm. |
| 370 | * |
| 371 | * LOCKING: |
| 372 | * EH context. |
| 373 | * |
| 374 | * RETURNS: |
| 375 | * 0 on success, -ENOENT if _GTM doesn't exist, -errno on failure. |
| 376 | */ |
Tejun Heo | 0d02f0b | 2007-12-15 15:04:57 +0900 | [diff] [blame] | 377 | int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *gtm) |
Tejun Heo | 64578a3 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 378 | { |
| 379 | struct acpi_buffer output = { .length = ACPI_ALLOCATE_BUFFER }; |
| 380 | union acpi_object *out_obj; |
| 381 | acpi_status status; |
| 382 | int rc = 0; |
| 383 | |
| 384 | status = acpi_evaluate_object(ap->acpi_handle, "_GTM", NULL, &output); |
| 385 | |
| 386 | rc = -ENOENT; |
| 387 | if (status == AE_NOT_FOUND) |
| 388 | goto out_free; |
| 389 | |
| 390 | rc = -EINVAL; |
| 391 | if (ACPI_FAILURE(status)) { |
| 392 | ata_port_printk(ap, KERN_ERR, |
| 393 | "ACPI get timing mode failed (AE 0x%x)\n", |
| 394 | status); |
| 395 | goto out_free; |
| 396 | } |
| 397 | |
| 398 | out_obj = output.pointer; |
| 399 | if (out_obj->type != ACPI_TYPE_BUFFER) { |
| 400 | ata_port_printk(ap, KERN_WARNING, |
| 401 | "_GTM returned unexpected object type 0x%x\n", |
| 402 | out_obj->type); |
| 403 | |
| 404 | goto out_free; |
| 405 | } |
| 406 | |
| 407 | if (out_obj->buffer.length != sizeof(struct ata_acpi_gtm)) { |
| 408 | ata_port_printk(ap, KERN_ERR, |
| 409 | "_GTM returned invalid length %d\n", |
| 410 | out_obj->buffer.length); |
| 411 | goto out_free; |
| 412 | } |
| 413 | |
| 414 | memcpy(gtm, out_obj->buffer.pointer, sizeof(struct ata_acpi_gtm)); |
| 415 | rc = 0; |
| 416 | out_free: |
| 417 | kfree(output.pointer); |
| 418 | return rc; |
| 419 | } |
| 420 | |
Alan Cox | badff03 | 2007-10-04 21:28:18 +0100 | [diff] [blame] | 421 | EXPORT_SYMBOL_GPL(ata_acpi_gtm); |
| 422 | |
Tejun Heo | 64578a3 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 423 | /** |
| 424 | * ata_acpi_stm - execute _STM |
| 425 | * @ap: target ATA port |
| 426 | * @stm: timing parameter to _STM |
| 427 | * |
| 428 | * Evaluate _STM with timing parameter @stm. |
| 429 | * |
| 430 | * LOCKING: |
| 431 | * EH context. |
| 432 | * |
| 433 | * RETURNS: |
| 434 | * 0 on success, -ENOENT if _STM doesn't exist, -errno on failure. |
| 435 | */ |
Tejun Heo | 0d02f0b | 2007-12-15 15:04:57 +0900 | [diff] [blame] | 436 | int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm) |
Tejun Heo | 64578a3 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 437 | { |
| 438 | acpi_status status; |
Tejun Heo | 0d02f0b | 2007-12-15 15:04:57 +0900 | [diff] [blame] | 439 | struct ata_acpi_gtm stm_buf = *stm; |
Tejun Heo | 64578a3 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 440 | struct acpi_object_list input; |
| 441 | union acpi_object in_params[3]; |
| 442 | |
| 443 | in_params[0].type = ACPI_TYPE_BUFFER; |
| 444 | in_params[0].buffer.length = sizeof(struct ata_acpi_gtm); |
Tejun Heo | 0d02f0b | 2007-12-15 15:04:57 +0900 | [diff] [blame] | 445 | in_params[0].buffer.pointer = (u8 *)&stm_buf; |
Tejun Heo | 64578a3 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 446 | /* Buffers for id may need byteswapping ? */ |
| 447 | in_params[1].type = ACPI_TYPE_BUFFER; |
| 448 | in_params[1].buffer.length = 512; |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 449 | in_params[1].buffer.pointer = (u8 *)ap->link.device[0].id; |
Tejun Heo | 64578a3 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 450 | in_params[2].type = ACPI_TYPE_BUFFER; |
| 451 | in_params[2].buffer.length = 512; |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 452 | in_params[2].buffer.pointer = (u8 *)ap->link.device[1].id; |
Tejun Heo | 64578a3 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 453 | |
| 454 | input.count = 3; |
| 455 | input.pointer = in_params; |
| 456 | |
| 457 | status = acpi_evaluate_object(ap->acpi_handle, "_STM", &input, NULL); |
| 458 | |
| 459 | if (status == AE_NOT_FOUND) |
| 460 | return -ENOENT; |
| 461 | if (ACPI_FAILURE(status)) { |
| 462 | ata_port_printk(ap, KERN_ERR, |
| 463 | "ACPI set timing mode failed (status=0x%x)\n", status); |
| 464 | return -EINVAL; |
| 465 | } |
| 466 | return 0; |
| 467 | } |
| 468 | |
Alan Cox | badff03 | 2007-10-04 21:28:18 +0100 | [diff] [blame] | 469 | EXPORT_SYMBOL_GPL(ata_acpi_stm); |
| 470 | |
Tejun Heo | 64578a3 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 471 | /** |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 472 | * ata_dev_get_GTF - get the drive bootup default taskfile settings |
Tejun Heo | 3a32a8e | 2007-05-05 23:50:38 +0900 | [diff] [blame] | 473 | * @dev: target ATA device |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 474 | * @gtf: output parameter for buffer containing _GTF taskfile arrays |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 475 | * |
| 476 | * This applies to both PATA and SATA drives. |
| 477 | * |
| 478 | * The _GTF method has no input parameters. |
| 479 | * It returns a variable number of register set values (registers |
| 480 | * hex 1F1..1F7, taskfiles). |
| 481 | * The <variable number> is not known in advance, so have ACPI-CA |
| 482 | * allocate the buffer as needed and return it, then free it later. |
| 483 | * |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 484 | * LOCKING: |
| 485 | * EH context. |
| 486 | * |
| 487 | * RETURNS: |
Tejun Heo | 66fa7f2 | 2007-12-15 15:05:04 +0900 | [diff] [blame] | 488 | * Number of taskfiles on success, 0 if _GTF doesn't exist. -EINVAL |
| 489 | * if _GTF is invalid. |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 490 | */ |
Tejun Heo | 398e078 | 2007-12-15 15:05:03 +0900 | [diff] [blame] | 491 | static int ata_dev_get_GTF(struct ata_device *dev, struct ata_acpi_gtf **gtf) |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 492 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 493 | struct ata_port *ap = dev->link->ap; |
Tejun Heo | 3a32a8e | 2007-05-05 23:50:38 +0900 | [diff] [blame] | 494 | acpi_status status; |
Tejun Heo | 3a32a8e | 2007-05-05 23:50:38 +0900 | [diff] [blame] | 495 | struct acpi_buffer output; |
| 496 | union acpi_object *out_obj; |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 497 | int rc = 0; |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 498 | |
Tejun Heo | 398e078 | 2007-12-15 15:05:03 +0900 | [diff] [blame] | 499 | /* if _GTF is cached, use the cached value */ |
| 500 | if (dev->gtf_cache) { |
| 501 | out_obj = dev->gtf_cache; |
| 502 | goto done; |
| 503 | } |
| 504 | |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 505 | /* set up output buffer */ |
| 506 | output.length = ACPI_ALLOCATE_BUFFER; |
| 507 | output.pointer = NULL; /* ACPI-CA sets this; save/free it later */ |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 508 | |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 509 | if (ata_msg_probe(ap)) |
Tejun Heo | 3a32a8e | 2007-05-05 23:50:38 +0900 | [diff] [blame] | 510 | ata_dev_printk(dev, KERN_DEBUG, "%s: ENTER: port#: %d\n", |
Harvey Harrison | 7f5e4e8 | 2008-03-05 18:24:52 -0800 | [diff] [blame] | 511 | __func__, ap->port_no); |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 512 | |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 513 | /* _GTF has no input parameters */ |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 514 | status = acpi_evaluate_object(dev->acpi_handle, "_GTF", NULL, &output); |
Tejun Heo | 398e078 | 2007-12-15 15:05:03 +0900 | [diff] [blame] | 515 | out_obj = dev->gtf_cache = output.pointer; |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 516 | |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 517 | if (ACPI_FAILURE(status)) { |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 518 | if (status != AE_NOT_FOUND) { |
| 519 | ata_dev_printk(dev, KERN_WARNING, |
| 520 | "_GTF evaluation failed (AE 0x%x)\n", |
| 521 | status); |
Tejun Heo | 66fa7f2 | 2007-12-15 15:05:04 +0900 | [diff] [blame] | 522 | rc = -EINVAL; |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 523 | } |
| 524 | goto out_free; |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 525 | } |
| 526 | |
| 527 | if (!output.length || !output.pointer) { |
| 528 | if (ata_msg_probe(ap)) |
Tejun Heo | 3a32a8e | 2007-05-05 23:50:38 +0900 | [diff] [blame] | 529 | ata_dev_printk(dev, KERN_DEBUG, "%s: Run _GTF: " |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 530 | "length or ptr is NULL (0x%llx, 0x%p)\n", |
Harvey Harrison | 7f5e4e8 | 2008-03-05 18:24:52 -0800 | [diff] [blame] | 531 | __func__, |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 532 | (unsigned long long)output.length, |
| 533 | output.pointer); |
Tejun Heo | 66fa7f2 | 2007-12-15 15:05:04 +0900 | [diff] [blame] | 534 | rc = -EINVAL; |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 535 | goto out_free; |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 536 | } |
| 537 | |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 538 | if (out_obj->type != ACPI_TYPE_BUFFER) { |
Tejun Heo | 69b16a5 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 539 | ata_dev_printk(dev, KERN_WARNING, |
| 540 | "_GTF unexpected object type 0x%x\n", |
| 541 | out_obj->type); |
Tejun Heo | 66fa7f2 | 2007-12-15 15:05:04 +0900 | [diff] [blame] | 542 | rc = -EINVAL; |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 543 | goto out_free; |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 544 | } |
| 545 | |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 546 | if (out_obj->buffer.length % REGS_PER_GTF) { |
Tejun Heo | 69b16a5 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 547 | ata_dev_printk(dev, KERN_WARNING, |
| 548 | "unexpected _GTF length (%d)\n", |
| 549 | out_obj->buffer.length); |
Tejun Heo | 66fa7f2 | 2007-12-15 15:05:04 +0900 | [diff] [blame] | 550 | rc = -EINVAL; |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 551 | goto out_free; |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 552 | } |
| 553 | |
Tejun Heo | 398e078 | 2007-12-15 15:05:03 +0900 | [diff] [blame] | 554 | done: |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 555 | rc = out_obj->buffer.length / REGS_PER_GTF; |
Tejun Heo | 398e078 | 2007-12-15 15:05:03 +0900 | [diff] [blame] | 556 | if (gtf) { |
| 557 | *gtf = (void *)out_obj->buffer.pointer; |
| 558 | if (ata_msg_probe(ap)) |
| 559 | ata_dev_printk(dev, KERN_DEBUG, |
| 560 | "%s: returning gtf=%p, gtf_count=%d\n", |
Harvey Harrison | 7f5e4e8 | 2008-03-05 18:24:52 -0800 | [diff] [blame] | 561 | __func__, *gtf, rc); |
Tejun Heo | 398e078 | 2007-12-15 15:05:03 +0900 | [diff] [blame] | 562 | } |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 563 | return rc; |
| 564 | |
| 565 | out_free: |
Tejun Heo | 398e078 | 2007-12-15 15:05:03 +0900 | [diff] [blame] | 566 | ata_acpi_clear_gtf(dev); |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 567 | return rc; |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 568 | } |
| 569 | |
Tejun Heo | 7c77fa4 | 2007-12-18 16:33:03 +0900 | [diff] [blame] | 570 | /** |
| 571 | * ata_acpi_gtm_xfermode - determine xfermode from GTM parameter |
| 572 | * @dev: target device |
| 573 | * @gtm: GTM parameter to use |
| 574 | * |
| 575 | * Determine xfermask for @dev from @gtm. |
| 576 | * |
| 577 | * LOCKING: |
| 578 | * None. |
| 579 | * |
| 580 | * RETURNS: |
| 581 | * Determined xfermask. |
| 582 | */ |
| 583 | unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev, |
| 584 | const struct ata_acpi_gtm *gtm) |
| 585 | { |
Tejun Heo | a0f79b9 | 2007-12-18 16:33:05 +0900 | [diff] [blame] | 586 | unsigned long xfer_mask = 0; |
| 587 | unsigned int type; |
| 588 | int unit; |
| 589 | u8 mode; |
Tejun Heo | 7c77fa4 | 2007-12-18 16:33:03 +0900 | [diff] [blame] | 590 | |
| 591 | /* we always use the 0 slot for crap hardware */ |
| 592 | unit = dev->devno; |
| 593 | if (!(gtm->flags & 0x10)) |
| 594 | unit = 0; |
| 595 | |
Tejun Heo | a0f79b9 | 2007-12-18 16:33:05 +0900 | [diff] [blame] | 596 | /* PIO */ |
| 597 | mode = ata_timing_cycle2mode(ATA_SHIFT_PIO, gtm->drive[unit].pio); |
| 598 | xfer_mask |= ata_xfer_mode2mask(mode); |
Tejun Heo | 7c77fa4 | 2007-12-18 16:33:03 +0900 | [diff] [blame] | 599 | |
| 600 | /* See if we have MWDMA or UDMA data. We don't bother with |
| 601 | * MWDMA if UDMA is available as this means the BIOS set UDMA |
| 602 | * and our error changedown if it works is UDMA to PIO anyway. |
| 603 | */ |
Tejun Heo | a0f79b9 | 2007-12-18 16:33:05 +0900 | [diff] [blame] | 604 | if (!(gtm->flags & (1 << (2 * unit)))) |
| 605 | type = ATA_SHIFT_MWDMA; |
| 606 | else |
| 607 | type = ATA_SHIFT_UDMA; |
Tejun Heo | 7c77fa4 | 2007-12-18 16:33:03 +0900 | [diff] [blame] | 608 | |
Tejun Heo | a0f79b9 | 2007-12-18 16:33:05 +0900 | [diff] [blame] | 609 | mode = ata_timing_cycle2mode(type, gtm->drive[unit].dma); |
| 610 | xfer_mask |= ata_xfer_mode2mask(mode); |
| 611 | |
| 612 | return xfer_mask; |
Tejun Heo | 7c77fa4 | 2007-12-18 16:33:03 +0900 | [diff] [blame] | 613 | } |
| 614 | EXPORT_SYMBOL_GPL(ata_acpi_gtm_xfermask); |
| 615 | |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 616 | /** |
Alan Cox | e1ddb4b | 2007-08-16 02:33:36 -0400 | [diff] [blame] | 617 | * ata_acpi_cbl_80wire - Check for 80 wire cable |
| 618 | * @ap: Port to check |
Tejun Heo | 021ee9a | 2007-12-18 16:33:06 +0900 | [diff] [blame] | 619 | * @gtm: GTM data to use |
Alan Cox | e1ddb4b | 2007-08-16 02:33:36 -0400 | [diff] [blame] | 620 | * |
Tejun Heo | 021ee9a | 2007-12-18 16:33:06 +0900 | [diff] [blame] | 621 | * Return 1 if the @gtm indicates the BIOS selected an 80wire mode. |
Alan Cox | e1ddb4b | 2007-08-16 02:33:36 -0400 | [diff] [blame] | 622 | */ |
Tejun Heo | 021ee9a | 2007-12-18 16:33:06 +0900 | [diff] [blame] | 623 | int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm) |
Alan Cox | e1ddb4b | 2007-08-16 02:33:36 -0400 | [diff] [blame] | 624 | { |
Tejun Heo | 021ee9a | 2007-12-18 16:33:06 +0900 | [diff] [blame] | 625 | struct ata_device *dev; |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 626 | |
Tejun Heo | 021ee9a | 2007-12-18 16:33:06 +0900 | [diff] [blame] | 627 | ata_link_for_each_dev(dev, &ap->link) { |
| 628 | unsigned long xfer_mask, udma_mask; |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 629 | |
Tejun Heo | 021ee9a | 2007-12-18 16:33:06 +0900 | [diff] [blame] | 630 | if (!ata_dev_enabled(dev)) |
| 631 | continue; |
Alan Cox | e1ddb4b | 2007-08-16 02:33:36 -0400 | [diff] [blame] | 632 | |
Tejun Heo | 021ee9a | 2007-12-18 16:33:06 +0900 | [diff] [blame] | 633 | xfer_mask = ata_acpi_gtm_xfermask(dev, gtm); |
| 634 | ata_unpack_xfermask(xfer_mask, NULL, NULL, &udma_mask); |
| 635 | |
| 636 | if (udma_mask & ~ATA_UDMA_MASK_40C) |
| 637 | return 1; |
| 638 | } |
| 639 | |
Alan Cox | e1ddb4b | 2007-08-16 02:33:36 -0400 | [diff] [blame] | 640 | return 0; |
| 641 | } |
Alan Cox | e1ddb4b | 2007-08-16 02:33:36 -0400 | [diff] [blame] | 642 | EXPORT_SYMBOL_GPL(ata_acpi_cbl_80wire); |
| 643 | |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 644 | static void ata_acpi_gtf_to_tf(struct ata_device *dev, |
| 645 | const struct ata_acpi_gtf *gtf, |
| 646 | struct ata_taskfile *tf) |
| 647 | { |
| 648 | ata_tf_init(dev, tf); |
| 649 | |
| 650 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
| 651 | tf->protocol = ATA_PROT_NODATA; |
| 652 | tf->feature = gtf->tf[0]; /* 0x1f1 */ |
| 653 | tf->nsect = gtf->tf[1]; /* 0x1f2 */ |
| 654 | tf->lbal = gtf->tf[2]; /* 0x1f3 */ |
| 655 | tf->lbam = gtf->tf[3]; /* 0x1f4 */ |
| 656 | tf->lbah = gtf->tf[4]; /* 0x1f5 */ |
| 657 | tf->device = gtf->tf[5]; /* 0x1f6 */ |
| 658 | tf->command = gtf->tf[6]; /* 0x1f7 */ |
| 659 | } |
| 660 | |
| 661 | static int ata_acpi_filter_tf(const struct ata_taskfile *tf, |
| 662 | const struct ata_taskfile *ptf) |
| 663 | { |
| 664 | if (ata_acpi_gtf_filter & ATA_ACPI_FILTER_SETXFER) { |
| 665 | /* libata doesn't use ACPI to configure transfer mode. |
| 666 | * It will only confuse device configuration. Skip. |
| 667 | */ |
| 668 | if (tf->command == ATA_CMD_SET_FEATURES && |
| 669 | tf->feature == SETFEATURES_XFER) |
| 670 | return 1; |
| 671 | } |
| 672 | |
| 673 | if (ata_acpi_gtf_filter & ATA_ACPI_FILTER_LOCK) { |
| 674 | /* BIOS writers, sorry but we don't wanna lock |
| 675 | * features unless the user explicitly said so. |
| 676 | */ |
| 677 | |
| 678 | /* DEVICE CONFIGURATION FREEZE LOCK */ |
| 679 | if (tf->command == ATA_CMD_CONF_OVERLAY && |
| 680 | tf->feature == ATA_DCO_FREEZE_LOCK) |
| 681 | return 1; |
| 682 | |
| 683 | /* SECURITY FREEZE LOCK */ |
| 684 | if (tf->command == ATA_CMD_SEC_FREEZE_LOCK) |
| 685 | return 1; |
| 686 | |
| 687 | /* SET MAX LOCK and SET MAX FREEZE LOCK */ |
| 688 | if ((!ptf || ptf->command != ATA_CMD_READ_NATIVE_MAX) && |
| 689 | tf->command == ATA_CMD_SET_MAX && |
| 690 | (tf->feature == ATA_SET_MAX_LOCK || |
| 691 | tf->feature == ATA_SET_MAX_FREEZE_LOCK)) |
| 692 | return 1; |
| 693 | } |
| 694 | |
Tejun Heo | b344991 | 2008-07-06 23:15:03 +0900 | [diff] [blame^] | 695 | if (ata_acpi_gtf_filter & ATA_ACPI_FILTER_DIPM) { |
| 696 | /* inhibit enabling DIPM */ |
| 697 | if (tf->command == ATA_CMD_SET_FEATURES && |
| 698 | tf->feature == SETFEATURES_SATA_ENABLE && |
| 699 | tf->nsect == SATA_DIPM) |
| 700 | return 1; |
| 701 | } |
| 702 | |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 703 | return 0; |
| 704 | } |
| 705 | |
Alan Cox | e1ddb4b | 2007-08-16 02:33:36 -0400 | [diff] [blame] | 706 | /** |
Tejun Heo | 0e8634b | 2007-12-15 15:05:05 +0900 | [diff] [blame] | 707 | * ata_acpi_run_tf - send taskfile registers to host controller |
Tejun Heo | 3a32a8e | 2007-05-05 23:50:38 +0900 | [diff] [blame] | 708 | * @dev: target ATA device |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 709 | * @gtf: raw ATA taskfile register set (0x1f1 - 0x1f7) |
| 710 | * |
| 711 | * Outputs ATA taskfile to standard ATA host controller using MMIO |
| 712 | * or PIO as indicated by the ATA_FLAG_MMIO flag. |
| 713 | * Writes the control, feature, nsect, lbal, lbam, and lbah registers. |
| 714 | * Optionally (ATA_TFLAG_LBA48) writes hob_feature, hob_nsect, |
| 715 | * hob_lbal, hob_lbam, and hob_lbah. |
| 716 | * |
| 717 | * This function waits for idle (!BUSY and !DRQ) after writing |
| 718 | * registers. If the control register has a new value, this |
| 719 | * function also waits for idle after writing control and before |
| 720 | * writing the remaining registers. |
| 721 | * |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 722 | * LOCKING: |
| 723 | * EH context. |
| 724 | * |
| 725 | * RETURNS: |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 726 | * 1 if command is executed successfully. 0 if ignored, rejected or |
| 727 | * filtered out, -errno on other errors. |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 728 | */ |
Tejun Heo | 0e8634b | 2007-12-15 15:05:05 +0900 | [diff] [blame] | 729 | static int ata_acpi_run_tf(struct ata_device *dev, |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 730 | const struct ata_acpi_gtf *gtf, |
| 731 | const struct ata_acpi_gtf *prev_gtf) |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 732 | { |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 733 | struct ata_taskfile *pptf = NULL; |
| 734 | struct ata_taskfile tf, ptf, rtf; |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 735 | unsigned int err_mask; |
Tejun Heo | 0e8634b | 2007-12-15 15:05:05 +0900 | [diff] [blame] | 736 | const char *level; |
| 737 | char msg[60]; |
| 738 | int rc; |
Jeff Garzik | fc16c25 | 2007-02-24 21:05:01 -0500 | [diff] [blame] | 739 | |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 740 | if ((gtf->tf[0] == 0) && (gtf->tf[1] == 0) && (gtf->tf[2] == 0) |
| 741 | && (gtf->tf[3] == 0) && (gtf->tf[4] == 0) && (gtf->tf[5] == 0) |
| 742 | && (gtf->tf[6] == 0)) |
| 743 | return 0; |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 744 | |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 745 | ata_acpi_gtf_to_tf(dev, gtf, &tf); |
| 746 | if (prev_gtf) { |
| 747 | ata_acpi_gtf_to_tf(dev, prev_gtf, &ptf); |
| 748 | pptf = &ptf; |
| 749 | } |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 750 | |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 751 | if (!ata_acpi_filter_tf(&tf, pptf)) { |
| 752 | rtf = tf; |
| 753 | err_mask = ata_exec_internal(dev, &rtf, NULL, |
| 754 | DMA_NONE, NULL, 0, 0); |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 755 | |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 756 | switch (err_mask) { |
| 757 | case 0: |
| 758 | level = KERN_DEBUG; |
| 759 | snprintf(msg, sizeof(msg), "succeeded"); |
| 760 | rc = 1; |
| 761 | break; |
Tejun Heo | 0e8634b | 2007-12-15 15:05:05 +0900 | [diff] [blame] | 762 | |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 763 | case AC_ERR_DEV: |
| 764 | level = KERN_INFO; |
| 765 | snprintf(msg, sizeof(msg), |
| 766 | "rejected by device (Stat=0x%02x Err=0x%02x)", |
| 767 | rtf.command, rtf.feature); |
| 768 | rc = 0; |
| 769 | break; |
Tejun Heo | 0e8634b | 2007-12-15 15:05:05 +0900 | [diff] [blame] | 770 | |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 771 | default: |
| 772 | level = KERN_ERR; |
| 773 | snprintf(msg, sizeof(msg), |
| 774 | "failed (Emask=0x%x Stat=0x%02x Err=0x%02x)", |
| 775 | err_mask, rtf.command, rtf.feature); |
| 776 | rc = -EIO; |
| 777 | break; |
| 778 | } |
| 779 | } else { |
Tejun Heo | 0e8634b | 2007-12-15 15:05:05 +0900 | [diff] [blame] | 780 | level = KERN_INFO; |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 781 | snprintf(msg, sizeof(msg), "filtered out"); |
Tejun Heo | 0e8634b | 2007-12-15 15:05:05 +0900 | [diff] [blame] | 782 | rc = 0; |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 783 | } |
| 784 | |
Tejun Heo | 0e8634b | 2007-12-15 15:05:05 +0900 | [diff] [blame] | 785 | ata_dev_printk(dev, level, |
| 786 | "ACPI cmd %02x/%02x:%02x:%02x:%02x:%02x:%02x %s\n", |
| 787 | tf.command, tf.feature, tf.nsect, tf.lbal, |
| 788 | tf.lbam, tf.lbah, tf.device, msg); |
| 789 | |
| 790 | return rc; |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 791 | } |
| 792 | |
| 793 | /** |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 794 | * ata_acpi_exec_tfs - get then write drive taskfile settings |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 795 | * @dev: target ATA device |
Tejun Heo | 66fa7f2 | 2007-12-15 15:05:04 +0900 | [diff] [blame] | 796 | * @nr_executed: out paramter for the number of executed commands |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 797 | * |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 798 | * Evaluate _GTF and excute returned taskfiles. |
Tejun Heo | 69b16a5 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 799 | * |
| 800 | * LOCKING: |
| 801 | * EH context. |
| 802 | * |
| 803 | * RETURNS: |
Tejun Heo | 66fa7f2 | 2007-12-15 15:05:04 +0900 | [diff] [blame] | 804 | * Number of executed taskfiles on success, 0 if _GTF doesn't exist. |
| 805 | * -errno on other errors. |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 806 | */ |
Tejun Heo | 66fa7f2 | 2007-12-15 15:05:04 +0900 | [diff] [blame] | 807 | static int ata_acpi_exec_tfs(struct ata_device *dev, int *nr_executed) |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 808 | { |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 809 | struct ata_acpi_gtf *gtf = NULL, *pgtf = NULL; |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 810 | int gtf_count, i, rc; |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 811 | |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 812 | /* get taskfiles */ |
Tejun Heo | 66fa7f2 | 2007-12-15 15:05:04 +0900 | [diff] [blame] | 813 | rc = ata_dev_get_GTF(dev, >f); |
| 814 | if (rc < 0) |
| 815 | return rc; |
| 816 | gtf_count = rc; |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 817 | |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 818 | /* execute them */ |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 819 | for (i = 0; i < gtf_count; i++, gtf++) { |
| 820 | rc = ata_acpi_run_tf(dev, gtf, pgtf); |
Tejun Heo | 0e8634b | 2007-12-15 15:05:05 +0900 | [diff] [blame] | 821 | if (rc < 0) |
| 822 | break; |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 823 | if (rc) { |
Tejun Heo | 0e8634b | 2007-12-15 15:05:05 +0900 | [diff] [blame] | 824 | (*nr_executed)++; |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 825 | pgtf = gtf; |
| 826 | } |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 827 | } |
| 828 | |
Tejun Heo | 398e078 | 2007-12-15 15:05:03 +0900 | [diff] [blame] | 829 | ata_acpi_clear_gtf(dev); |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 830 | |
Tejun Heo | 0e8634b | 2007-12-15 15:05:05 +0900 | [diff] [blame] | 831 | if (rc < 0) |
| 832 | return rc; |
| 833 | return 0; |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 834 | } |
| 835 | |
Kristen Carlson Accardi | 7ea1fbc | 2006-09-28 11:29:12 -0700 | [diff] [blame] | 836 | /** |
| 837 | * ata_acpi_push_id - send Identify data to drive |
Tejun Heo | 3a32a8e | 2007-05-05 23:50:38 +0900 | [diff] [blame] | 838 | * @dev: target ATA device |
Kristen Carlson Accardi | 7ea1fbc | 2006-09-28 11:29:12 -0700 | [diff] [blame] | 839 | * |
| 840 | * _SDD ACPI object: for SATA mode only |
| 841 | * Must be after Identify (Packet) Device -- uses its data |
| 842 | * ATM this function never returns a failure. It is an optional |
| 843 | * method and if it fails for whatever reason, we should still |
| 844 | * just keep going. |
Tejun Heo | 69b16a5 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 845 | * |
| 846 | * LOCKING: |
| 847 | * EH context. |
| 848 | * |
| 849 | * RETURNS: |
| 850 | * 0 on success, -errno on failure. |
Kristen Carlson Accardi | 7ea1fbc | 2006-09-28 11:29:12 -0700 | [diff] [blame] | 851 | */ |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 852 | static int ata_acpi_push_id(struct ata_device *dev) |
Kristen Carlson Accardi | 7ea1fbc | 2006-09-28 11:29:12 -0700 | [diff] [blame] | 853 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 854 | struct ata_port *ap = dev->link->ap; |
Tejun Heo | 3a32a8e | 2007-05-05 23:50:38 +0900 | [diff] [blame] | 855 | int err; |
Tejun Heo | 3a32a8e | 2007-05-05 23:50:38 +0900 | [diff] [blame] | 856 | acpi_status status; |
| 857 | struct acpi_object_list input; |
| 858 | union acpi_object in_params[1]; |
Kristen Carlson Accardi | 7ea1fbc | 2006-09-28 11:29:12 -0700 | [diff] [blame] | 859 | |
Kristen Carlson Accardi | 7ea1fbc | 2006-09-28 11:29:12 -0700 | [diff] [blame] | 860 | if (ata_msg_probe(ap)) |
Tejun Heo | 3a32a8e | 2007-05-05 23:50:38 +0900 | [diff] [blame] | 861 | ata_dev_printk(dev, KERN_DEBUG, "%s: ix = %d, port#: %d\n", |
Harvey Harrison | 7f5e4e8 | 2008-03-05 18:24:52 -0800 | [diff] [blame] | 862 | __func__, dev->devno, ap->port_no); |
Kristen Carlson Accardi | 7ea1fbc | 2006-09-28 11:29:12 -0700 | [diff] [blame] | 863 | |
Kristen Carlson Accardi | 7ea1fbc | 2006-09-28 11:29:12 -0700 | [diff] [blame] | 864 | /* Give the drive Identify data to the drive via the _SDD method */ |
| 865 | /* _SDD: set up input parameters */ |
| 866 | input.count = 1; |
| 867 | input.pointer = in_params; |
| 868 | in_params[0].type = ACPI_TYPE_BUFFER; |
Tejun Heo | 3a32a8e | 2007-05-05 23:50:38 +0900 | [diff] [blame] | 869 | in_params[0].buffer.length = sizeof(dev->id[0]) * ATA_ID_WORDS; |
| 870 | in_params[0].buffer.pointer = (u8 *)dev->id; |
Kristen Carlson Accardi | 7ea1fbc | 2006-09-28 11:29:12 -0700 | [diff] [blame] | 871 | /* Output buffer: _SDD has no output */ |
| 872 | |
| 873 | /* It's OK for _SDD to be missing too. */ |
Tejun Heo | 3a32a8e | 2007-05-05 23:50:38 +0900 | [diff] [blame] | 874 | swap_buf_le16(dev->id, ATA_ID_WORDS); |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 875 | status = acpi_evaluate_object(dev->acpi_handle, "_SDD", &input, NULL); |
Tejun Heo | 3a32a8e | 2007-05-05 23:50:38 +0900 | [diff] [blame] | 876 | swap_buf_le16(dev->id, ATA_ID_WORDS); |
Kristen Carlson Accardi | 7ea1fbc | 2006-09-28 11:29:12 -0700 | [diff] [blame] | 877 | |
| 878 | err = ACPI_FAILURE(status) ? -EIO : 0; |
Tejun Heo | 69b16a5 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 879 | if (err < 0) |
| 880 | ata_dev_printk(dev, KERN_WARNING, |
| 881 | "ACPI _SDD failed (AE 0x%x)\n", status); |
Kristen Carlson Accardi | 7ea1fbc | 2006-09-28 11:29:12 -0700 | [diff] [blame] | 882 | |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 883 | return err; |
Kristen Carlson Accardi | 7ea1fbc | 2006-09-28 11:29:12 -0700 | [diff] [blame] | 884 | } |
| 885 | |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 886 | /** |
Tejun Heo | 64578a3 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 887 | * ata_acpi_on_suspend - ATA ACPI hook called on suspend |
| 888 | * @ap: target ATA port |
| 889 | * |
| 890 | * This function is called when @ap is about to be suspended. All |
| 891 | * devices are already put to sleep but the port_suspend() callback |
| 892 | * hasn't been executed yet. Error return from this function aborts |
| 893 | * suspend. |
| 894 | * |
| 895 | * LOCKING: |
| 896 | * EH context. |
| 897 | * |
| 898 | * RETURNS: |
| 899 | * 0 on success, -errno on failure. |
| 900 | */ |
| 901 | int ata_acpi_on_suspend(struct ata_port *ap) |
| 902 | { |
Tejun Heo | c05e6ff | 2007-12-15 15:05:02 +0900 | [diff] [blame] | 903 | /* nada */ |
| 904 | return 0; |
Tejun Heo | 64578a3 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 905 | } |
| 906 | |
| 907 | /** |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 908 | * ata_acpi_on_resume - ATA ACPI hook called on resume |
| 909 | * @ap: target ATA port |
| 910 | * |
| 911 | * This function is called when @ap is resumed - right after port |
| 912 | * itself is resumed but before any EH action is taken. |
| 913 | * |
| 914 | * LOCKING: |
| 915 | * EH context. |
| 916 | */ |
| 917 | void ata_acpi_on_resume(struct ata_port *ap) |
| 918 | { |
Tejun Heo | c05e6ff | 2007-12-15 15:05:02 +0900 | [diff] [blame] | 919 | const struct ata_acpi_gtm *gtm = ata_acpi_init_gtm(ap); |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 920 | struct ata_device *dev; |
Kristen Carlson Accardi | 7ea1fbc | 2006-09-28 11:29:12 -0700 | [diff] [blame] | 921 | |
Tejun Heo | 398e078 | 2007-12-15 15:05:03 +0900 | [diff] [blame] | 922 | if (ap->acpi_handle && gtm) { |
| 923 | /* _GTM valid */ |
| 924 | |
| 925 | /* restore timing parameters */ |
Tejun Heo | c05e6ff | 2007-12-15 15:05:02 +0900 | [diff] [blame] | 926 | ata_acpi_stm(ap, gtm); |
Tejun Heo | 64578a3 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 927 | |
Tejun Heo | 398e078 | 2007-12-15 15:05:03 +0900 | [diff] [blame] | 928 | /* _GTF should immediately follow _STM so that it can |
| 929 | * use values set by _STM. Cache _GTF result and |
| 930 | * schedule _GTF. |
| 931 | */ |
| 932 | ata_link_for_each_dev(dev, &ap->link) { |
| 933 | ata_acpi_clear_gtf(dev); |
Shaohua Li | 48feb3c | 2008-03-25 16:50:45 +0800 | [diff] [blame] | 934 | if (ata_dev_enabled(dev) && |
| 935 | ata_dev_get_GTF(dev, NULL) >= 0) |
Tejun Heo | 398e078 | 2007-12-15 15:05:03 +0900 | [diff] [blame] | 936 | dev->flags |= ATA_DFLAG_ACPI_PENDING; |
| 937 | } |
| 938 | } else { |
| 939 | /* SATA _GTF needs to be evaulated after _SDD and |
| 940 | * there's no reason to evaluate IDE _GTF early |
| 941 | * without _STM. Clear cache and schedule _GTF. |
| 942 | */ |
| 943 | ata_link_for_each_dev(dev, &ap->link) { |
| 944 | ata_acpi_clear_gtf(dev); |
Shaohua Li | 48feb3c | 2008-03-25 16:50:45 +0800 | [diff] [blame] | 945 | if (ata_dev_enabled(dev)) |
| 946 | dev->flags |= ATA_DFLAG_ACPI_PENDING; |
Tejun Heo | 398e078 | 2007-12-15 15:05:03 +0900 | [diff] [blame] | 947 | } |
| 948 | } |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 949 | } |
| 950 | |
| 951 | /** |
Shaohua Li | bd3adca | 2007-11-02 09:32:38 +0800 | [diff] [blame] | 952 | * ata_acpi_set_state - set the port power state |
| 953 | * @ap: target ATA port |
| 954 | * @state: state, on/off |
| 955 | * |
| 956 | * This function executes the _PS0/_PS3 ACPI method to set the power state. |
| 957 | * ACPI spec requires _PS0 when IDE power on and _PS3 when power off |
| 958 | */ |
| 959 | void ata_acpi_set_state(struct ata_port *ap, pm_message_t state) |
| 960 | { |
| 961 | struct ata_device *dev; |
| 962 | |
| 963 | if (!ap->acpi_handle || (ap->flags & ATA_FLAG_ACPI_SATA)) |
| 964 | return; |
| 965 | |
| 966 | /* channel first and then drives for power on and vica versa |
| 967 | for power off */ |
| 968 | if (state.event == PM_EVENT_ON) |
| 969 | acpi_bus_set_power(ap->acpi_handle, ACPI_STATE_D0); |
| 970 | |
| 971 | ata_link_for_each_dev(dev, &ap->link) { |
| 972 | if (dev->acpi_handle && ata_dev_enabled(dev)) |
| 973 | acpi_bus_set_power(dev->acpi_handle, |
| 974 | state.event == PM_EVENT_ON ? |
| 975 | ACPI_STATE_D0 : ACPI_STATE_D3); |
| 976 | } |
| 977 | if (state.event != PM_EVENT_ON) |
| 978 | acpi_bus_set_power(ap->acpi_handle, ACPI_STATE_D3); |
| 979 | } |
| 980 | |
| 981 | /** |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 982 | * ata_acpi_on_devcfg - ATA ACPI hook called on device donfiguration |
| 983 | * @dev: target ATA device |
| 984 | * |
| 985 | * This function is called when @dev is about to be configured. |
| 986 | * IDENTIFY data might have been modified after this hook is run. |
| 987 | * |
| 988 | * LOCKING: |
| 989 | * EH context. |
| 990 | * |
| 991 | * RETURNS: |
| 992 | * Positive number if IDENTIFY data needs to be refreshed, 0 if not, |
| 993 | * -errno on failure. |
| 994 | */ |
| 995 | int ata_acpi_on_devcfg(struct ata_device *dev) |
| 996 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 997 | struct ata_port *ap = dev->link->ap; |
| 998 | struct ata_eh_context *ehc = &ap->link.eh_context; |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 999 | int acpi_sata = ap->flags & ATA_FLAG_ACPI_SATA; |
Tejun Heo | 66fa7f2 | 2007-12-15 15:05:04 +0900 | [diff] [blame] | 1000 | int nr_executed = 0; |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 1001 | int rc; |
| 1002 | |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 1003 | if (!dev->acpi_handle) |
| 1004 | return 0; |
| 1005 | |
| 1006 | /* do we need to do _GTF? */ |
| 1007 | if (!(dev->flags & ATA_DFLAG_ACPI_PENDING) && |
| 1008 | !(acpi_sata && (ehc->i.flags & ATA_EHI_DID_HARDRESET))) |
| 1009 | return 0; |
| 1010 | |
| 1011 | /* do _SDD if SATA */ |
| 1012 | if (acpi_sata) { |
| 1013 | rc = ata_acpi_push_id(dev); |
| 1014 | if (rc) |
| 1015 | goto acpi_err; |
| 1016 | } |
| 1017 | |
| 1018 | /* do _GTF */ |
Tejun Heo | 66fa7f2 | 2007-12-15 15:05:04 +0900 | [diff] [blame] | 1019 | rc = ata_acpi_exec_tfs(dev, &nr_executed); |
| 1020 | if (rc) |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 1021 | goto acpi_err; |
| 1022 | |
| 1023 | dev->flags &= ~ATA_DFLAG_ACPI_PENDING; |
| 1024 | |
| 1025 | /* refresh IDENTIFY page if any _GTF command has been executed */ |
Tejun Heo | 66fa7f2 | 2007-12-15 15:05:04 +0900 | [diff] [blame] | 1026 | if (nr_executed) { |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 1027 | rc = ata_dev_reread_id(dev, 0); |
| 1028 | if (rc < 0) { |
| 1029 | ata_dev_printk(dev, KERN_ERR, "failed to IDENTIFY " |
| 1030 | "after ACPI commands\n"); |
| 1031 | return rc; |
| 1032 | } |
| 1033 | } |
| 1034 | |
| 1035 | return 0; |
| 1036 | |
| 1037 | acpi_err: |
Tejun Heo | 66fa7f2 | 2007-12-15 15:05:04 +0900 | [diff] [blame] | 1038 | /* ignore evaluation failure if we can continue safely */ |
| 1039 | if (rc == -EINVAL && !nr_executed && !(ap->pflags & ATA_PFLAG_FROZEN)) |
| 1040 | return 0; |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 1041 | |
Tejun Heo | 66fa7f2 | 2007-12-15 15:05:04 +0900 | [diff] [blame] | 1042 | /* fail and let EH retry once more for unknown IO errors */ |
| 1043 | if (!(dev->flags & ATA_DFLAG_ACPI_FAILED)) { |
| 1044 | dev->flags |= ATA_DFLAG_ACPI_FAILED; |
| 1045 | return rc; |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 1046 | } |
Tejun Heo | 66fa7f2 | 2007-12-15 15:05:04 +0900 | [diff] [blame] | 1047 | |
| 1048 | ata_dev_printk(dev, KERN_WARNING, |
| 1049 | "ACPI: failed the second time, disabled\n"); |
| 1050 | dev->acpi_handle = NULL; |
| 1051 | |
| 1052 | /* We can safely continue if no _GTF command has been executed |
| 1053 | * and port is not frozen. |
| 1054 | */ |
| 1055 | if (!nr_executed && !(ap->pflags & ATA_PFLAG_FROZEN)) |
| 1056 | return 0; |
| 1057 | |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 1058 | return rc; |
| 1059 | } |
Tejun Heo | 562f0c2 | 2007-12-15 15:05:01 +0900 | [diff] [blame] | 1060 | |
| 1061 | /** |
| 1062 | * ata_acpi_on_disable - ATA ACPI hook called when a device is disabled |
| 1063 | * @dev: target ATA device |
| 1064 | * |
| 1065 | * This function is called when @dev is about to be disabled. |
| 1066 | * |
| 1067 | * LOCKING: |
| 1068 | * EH context. |
| 1069 | */ |
| 1070 | void ata_acpi_on_disable(struct ata_device *dev) |
| 1071 | { |
Tejun Heo | 398e078 | 2007-12-15 15:05:03 +0900 | [diff] [blame] | 1072 | ata_acpi_clear_gtf(dev); |
Tejun Heo | 562f0c2 | 2007-12-15 15:05:01 +0900 | [diff] [blame] | 1073 | } |