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> |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 22 | |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 23 | enum { |
| 24 | ATA_ACPI_FILTER_SETXFER = 1 << 0, |
| 25 | ATA_ACPI_FILTER_LOCK = 1 << 1, |
Tejun Heo | b344991 | 2008-07-06 23:15:03 +0900 | [diff] [blame] | 26 | ATA_ACPI_FILTER_DIPM = 1 << 2, |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 27 | |
| 28 | ATA_ACPI_FILTER_DEFAULT = ATA_ACPI_FILTER_SETXFER | |
Tejun Heo | b344991 | 2008-07-06 23:15:03 +0900 | [diff] [blame] | 29 | ATA_ACPI_FILTER_LOCK | |
| 30 | ATA_ACPI_FILTER_DIPM, |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 31 | }; |
| 32 | |
| 33 | static unsigned int ata_acpi_gtf_filter = ATA_ACPI_FILTER_DEFAULT; |
| 34 | module_param_named(acpi_gtf_filter, ata_acpi_gtf_filter, int, 0644); |
Tejun Heo | b344991 | 2008-07-06 23:15:03 +0900 | [diff] [blame] | 35 | 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] | 36 | |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 37 | #define NO_PORT_MULT 0xffff |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 38 | #define SATA_ADR(root, pmp) (((root) << 16) | (pmp)) |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 39 | |
| 40 | #define REGS_PER_GTF 7 |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 41 | struct ata_acpi_gtf { |
| 42 | u8 tf[REGS_PER_GTF]; /* regs. 0x1f1 - 0x1f7 */ |
| 43 | } __packed; |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 44 | |
Alan Cox | ca42663 | 2007-03-08 23:13:50 +0000 | [diff] [blame] | 45 | /* |
| 46 | * Helper - belongs in the PCI layer somewhere eventually |
| 47 | */ |
| 48 | static int is_pci_dev(struct device *dev) |
| 49 | { |
| 50 | return (dev->bus == &pci_bus_type); |
| 51 | } |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 52 | |
Tejun Heo | 398e078 | 2007-12-15 15:05:03 +0900 | [diff] [blame] | 53 | static void ata_acpi_clear_gtf(struct ata_device *dev) |
| 54 | { |
| 55 | kfree(dev->gtf_cache); |
| 56 | dev->gtf_cache = NULL; |
| 57 | } |
| 58 | |
Tejun Heo | d0df8b5d | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 59 | /** |
| 60 | * ata_acpi_associate_sata_port - associate SATA port with ACPI objects |
| 61 | * @ap: target SATA port |
| 62 | * |
| 63 | * Look up ACPI objects associated with @ap and initialize acpi_handle |
| 64 | * fields of @ap, the port and devices accordingly. |
| 65 | * |
| 66 | * LOCKING: |
| 67 | * EH context. |
| 68 | * |
| 69 | * RETURNS: |
| 70 | * 0 on success, -errno on failure. |
| 71 | */ |
| 72 | void ata_acpi_associate_sata_port(struct ata_port *ap) |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 73 | { |
Tejun Heo | d0df8b5d | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 74 | WARN_ON(!(ap->flags & ATA_FLAG_ACPI_SATA)); |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 75 | |
Tejun Heo | 071f44b | 2008-04-07 22:47:22 +0900 | [diff] [blame] | 76 | if (!sata_pmp_attached(ap)) { |
Tejun Heo | d0df8b5d | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 77 | acpi_integer adr = SATA_ADR(ap->port_no, NO_PORT_MULT); |
| 78 | |
| 79 | ap->link.device->acpi_handle = |
| 80 | acpi_get_child(ap->host->acpi_handle, adr); |
| 81 | } else { |
| 82 | struct ata_link *link; |
| 83 | |
| 84 | ap->link.device->acpi_handle = NULL; |
| 85 | |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 86 | ata_for_each_link(link, ap, EDGE) { |
Tejun Heo | d0df8b5d | 2007-09-23 13:19:54 +0900 | [diff] [blame] | 87 | acpi_integer adr = SATA_ADR(ap->port_no, link->pmp); |
| 88 | |
| 89 | link->device->acpi_handle = |
| 90 | acpi_get_child(ap->host->acpi_handle, adr); |
| 91 | } |
| 92 | } |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 93 | } |
Alan Cox | ca42663 | 2007-03-08 23:13:50 +0000 | [diff] [blame] | 94 | |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 95 | static void ata_acpi_associate_ide_port(struct ata_port *ap) |
| 96 | { |
| 97 | int max_devices, i; |
| 98 | |
| 99 | ap->acpi_handle = acpi_get_child(ap->host->acpi_handle, ap->port_no); |
| 100 | if (!ap->acpi_handle) |
| 101 | return; |
| 102 | |
| 103 | max_devices = 1; |
| 104 | if (ap->flags & ATA_FLAG_SLAVE_POSS) |
| 105 | max_devices++; |
| 106 | |
| 107 | for (i = 0; i < max_devices; i++) { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 108 | struct ata_device *dev = &ap->link.device[i]; |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 109 | |
| 110 | dev->acpi_handle = acpi_get_child(ap->acpi_handle, i); |
| 111 | } |
Tejun Heo | c05e6ff | 2007-12-15 15:05:02 +0900 | [diff] [blame] | 112 | |
| 113 | if (ata_acpi_gtm(ap, &ap->__acpi_init_gtm) == 0) |
| 114 | ap->pflags |= ATA_PFLAG_INIT_GTM_VALID; |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 115 | } |
| 116 | |
Holger Macht | 664d080 | 2008-06-03 20:27:59 +0200 | [diff] [blame] | 117 | /* @ap and @dev are the same as ata_acpi_handle_hotplug() */ |
| 118 | static void ata_acpi_detach_device(struct ata_port *ap, struct ata_device *dev) |
| 119 | { |
| 120 | if (dev) |
| 121 | dev->flags |= ATA_DFLAG_DETACH; |
| 122 | else { |
| 123 | struct ata_link *tlink; |
| 124 | struct ata_device *tdev; |
| 125 | |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 126 | ata_for_each_link(tlink, ap, EDGE) |
| 127 | ata_for_each_dev(tdev, tlink, ALL) |
Holger Macht | 664d080 | 2008-06-03 20:27:59 +0200 | [diff] [blame] | 128 | tdev->flags |= ATA_DFLAG_DETACH; |
| 129 | } |
| 130 | |
| 131 | ata_port_schedule_eh(ap); |
| 132 | } |
| 133 | |
| 134 | /** |
| 135 | * ata_acpi_handle_hotplug - ACPI event handler backend |
| 136 | * @ap: ATA port ACPI event occurred |
| 137 | * @dev: ATA device ACPI event occurred (can be NULL) |
| 138 | * @event: ACPI event which occurred |
Holger Macht | 664d080 | 2008-06-03 20:27:59 +0200 | [diff] [blame] | 139 | * |
| 140 | * All ACPI bay / device realted events end up in this function. If |
| 141 | * the event is port-wide @dev is NULL. If the event is specific to a |
| 142 | * device, @dev points to it. |
| 143 | * |
| 144 | * Hotplug (as opposed to unplug) notification is always handled as |
| 145 | * port-wide while unplug only kills the target device on device-wide |
| 146 | * event. |
| 147 | * |
| 148 | * LOCKING: |
| 149 | * ACPI notify handler context. May sleep. |
| 150 | */ |
| 151 | static void ata_acpi_handle_hotplug(struct ata_port *ap, struct ata_device *dev, |
Shaohua Li | f730ae1 | 2008-08-28 10:05:45 +0800 | [diff] [blame] | 152 | u32 event) |
Matthew Garrett | 237d844 | 2007-10-03 01:24:16 +0100 | [diff] [blame] | 153 | { |
Holger Macht | 664d080 | 2008-06-03 20:27:59 +0200 | [diff] [blame] | 154 | struct ata_eh_info *ehi = &ap->link.eh_info; |
Tejun Heo | 233f112 | 2008-03-12 14:24:43 +0900 | [diff] [blame] | 155 | int wait = 0; |
| 156 | unsigned long flags; |
Shaohua Li | f730ae1 | 2008-08-28 10:05:45 +0800 | [diff] [blame] | 157 | acpi_handle handle; |
Jeff Garzik | c85665f | 2008-05-19 17:56:10 -0400 | [diff] [blame] | 158 | |
Shaohua Li | f730ae1 | 2008-08-28 10:05:45 +0800 | [diff] [blame] | 159 | if (dev) |
Matthew Garrett | ae6c23c | 2008-05-19 17:29:34 +0100 | [diff] [blame] | 160 | handle = dev->acpi_handle; |
Shaohua Li | f730ae1 | 2008-08-28 10:05:45 +0800 | [diff] [blame] | 161 | else |
Matthew Garrett | ae6c23c | 2008-05-19 17:29:34 +0100 | [diff] [blame] | 162 | handle = ap->acpi_handle; |
Zhang Rui | 3c1e389 | 2008-07-11 09:42:03 -0400 | [diff] [blame] | 163 | |
Holger Macht | 664d080 | 2008-06-03 20:27:59 +0200 | [diff] [blame] | 164 | spin_lock_irqsave(ap->lock, flags); |
Shaohua Li | f730ae1 | 2008-08-28 10:05:45 +0800 | [diff] [blame] | 165 | /* |
| 166 | * When dock driver calls into the routine, it will always use |
| 167 | * ACPI_NOTIFY_BUS_CHECK/ACPI_NOTIFY_DEVICE_CHECK for add and |
| 168 | * ACPI_NOTIFY_EJECT_REQUEST for remove |
| 169 | */ |
Tejun Heo | 233f112 | 2008-03-12 14:24:43 +0900 | [diff] [blame] | 170 | switch (event) { |
| 171 | case ACPI_NOTIFY_BUS_CHECK: |
| 172 | case ACPI_NOTIFY_DEVICE_CHECK: |
| 173 | ata_ehi_push_desc(ehi, "ACPI event"); |
Jeff Garzik | c85665f | 2008-05-19 17:56:10 -0400 | [diff] [blame] | 174 | |
Shaohua Li | f730ae1 | 2008-08-28 10:05:45 +0800 | [diff] [blame] | 175 | ata_ehi_hotplugged(ehi); |
| 176 | ata_port_freeze(ap); |
Holger Macht | 664d080 | 2008-06-03 20:27:59 +0200 | [diff] [blame] | 177 | break; |
| 178 | case ACPI_NOTIFY_EJECT_REQUEST: |
| 179 | ata_ehi_push_desc(ehi, "ACPI event"); |
| 180 | |
Holger Macht | 664d080 | 2008-06-03 20:27:59 +0200 | [diff] [blame] | 181 | ata_acpi_detach_device(ap, dev); |
| 182 | wait = 1; |
| 183 | break; |
Matthew Garrett | 237d844 | 2007-10-03 01:24:16 +0100 | [diff] [blame] | 184 | } |
| 185 | |
Matthew Garrett | ae6c23c | 2008-05-19 17:29:34 +0100 | [diff] [blame] | 186 | spin_unlock_irqrestore(ap->lock, flags); |
| 187 | |
Shaohua Li | f730ae1 | 2008-08-28 10:05:45 +0800 | [diff] [blame] | 188 | if (wait) |
Matthew Garrett | ae6c23c | 2008-05-19 17:29:34 +0100 | [diff] [blame] | 189 | ata_port_wait_eh(ap); |
Holger Macht | 664d080 | 2008-06-03 20:27:59 +0200 | [diff] [blame] | 190 | } |
| 191 | |
| 192 | static void ata_acpi_dev_notify_dock(acpi_handle handle, u32 event, void *data) |
| 193 | { |
| 194 | struct ata_device *dev = data; |
| 195 | |
Shaohua Li | f730ae1 | 2008-08-28 10:05:45 +0800 | [diff] [blame] | 196 | ata_acpi_handle_hotplug(dev->link->ap, dev, event); |
Holger Macht | 664d080 | 2008-06-03 20:27:59 +0200 | [diff] [blame] | 197 | } |
| 198 | |
| 199 | static void ata_acpi_ap_notify_dock(acpi_handle handle, u32 event, void *data) |
| 200 | { |
| 201 | struct ata_port *ap = data; |
| 202 | |
Shaohua Li | f730ae1 | 2008-08-28 10:05:45 +0800 | [diff] [blame] | 203 | ata_acpi_handle_hotplug(ap, NULL, event); |
Matthew Garrett | 237d844 | 2007-10-03 01:24:16 +0100 | [diff] [blame] | 204 | } |
| 205 | |
Shaohua Li | 1253f7a | 2008-08-28 10:06:16 +0800 | [diff] [blame] | 206 | static void ata_acpi_uevent(struct ata_port *ap, struct ata_device *dev, |
| 207 | u32 event) |
| 208 | { |
| 209 | struct kobject *kobj = NULL; |
| 210 | char event_string[20]; |
| 211 | char *envp[] = { event_string, NULL }; |
| 212 | |
| 213 | if (dev) { |
| 214 | if (dev->sdev) |
| 215 | kobj = &dev->sdev->sdev_gendev.kobj; |
| 216 | } else |
| 217 | kobj = &ap->dev->kobj; |
| 218 | |
| 219 | if (kobj) { |
| 220 | snprintf(event_string, 20, "BAY_EVENT=%d", event); |
| 221 | kobject_uevent_env(kobj, KOBJ_CHANGE, envp); |
| 222 | } |
| 223 | } |
| 224 | |
| 225 | static void ata_acpi_ap_uevent(acpi_handle handle, u32 event, void *data) |
| 226 | { |
| 227 | ata_acpi_uevent(data, NULL, event); |
| 228 | } |
| 229 | |
| 230 | static void ata_acpi_dev_uevent(acpi_handle handle, u32 event, void *data) |
| 231 | { |
| 232 | struct ata_device *dev = data; |
| 233 | ata_acpi_uevent(dev->link->ap, dev, event); |
| 234 | } |
| 235 | |
| 236 | static struct acpi_dock_ops ata_acpi_dev_dock_ops = { |
| 237 | .handler = ata_acpi_dev_notify_dock, |
| 238 | .uevent = ata_acpi_dev_uevent, |
| 239 | }; |
| 240 | |
| 241 | static struct acpi_dock_ops ata_acpi_ap_dock_ops = { |
| 242 | .handler = ata_acpi_ap_notify_dock, |
| 243 | .uevent = ata_acpi_ap_uevent, |
| 244 | }; |
| 245 | |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 246 | /** |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 247 | * ata_acpi_associate - associate ATA host with ACPI objects |
| 248 | * @host: target ATA host |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 249 | * |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 250 | * Look up ACPI objects associated with @host and initialize |
| 251 | * acpi_handle fields of @host, its ports and devices accordingly. |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 252 | * |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 253 | * LOCKING: |
| 254 | * EH context. |
| 255 | * |
| 256 | * RETURNS: |
| 257 | * 0 on success, -errno on failure. |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 258 | */ |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 259 | void ata_acpi_associate(struct ata_host *host) |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 260 | { |
Matthew Garrett | 237d844 | 2007-10-03 01:24:16 +0100 | [diff] [blame] | 261 | int i, j; |
Alan Cox | ca42663 | 2007-03-08 23:13:50 +0000 | [diff] [blame] | 262 | |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 263 | if (!is_pci_dev(host->dev) || libata_noacpi) |
| 264 | return; |
Alan Cox | ca42663 | 2007-03-08 23:13:50 +0000 | [diff] [blame] | 265 | |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 266 | host->acpi_handle = DEVICE_ACPI_HANDLE(host->dev); |
| 267 | if (!host->acpi_handle) |
| 268 | return; |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 269 | |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 270 | for (i = 0; i < host->n_ports; i++) { |
| 271 | struct ata_port *ap = host->ports[i]; |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 272 | |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 273 | if (host->ports[0]->flags & ATA_FLAG_ACPI_SATA) |
| 274 | ata_acpi_associate_sata_port(ap); |
| 275 | else |
| 276 | ata_acpi_associate_ide_port(ap); |
Matthew Garrett | 237d844 | 2007-10-03 01:24:16 +0100 | [diff] [blame] | 277 | |
Tejun Heo | 233f112 | 2008-03-12 14:24:43 +0900 | [diff] [blame] | 278 | if (ap->acpi_handle) { |
Tejun Heo | 233f112 | 2008-03-12 14:24:43 +0900 | [diff] [blame] | 279 | /* we might be on a docking station */ |
| 280 | register_hotplug_dock_device(ap->acpi_handle, |
Shaohua Li | 1253f7a | 2008-08-28 10:06:16 +0800 | [diff] [blame] | 281 | &ata_acpi_ap_dock_ops, ap); |
Tejun Heo | 233f112 | 2008-03-12 14:24:43 +0900 | [diff] [blame] | 282 | } |
Matthew Garrett | 237d844 | 2007-10-03 01:24:16 +0100 | [diff] [blame] | 283 | |
| 284 | for (j = 0; j < ata_link_max_devices(&ap->link); j++) { |
| 285 | struct ata_device *dev = &ap->link.device[j]; |
| 286 | |
Tejun Heo | 233f112 | 2008-03-12 14:24:43 +0900 | [diff] [blame] | 287 | if (dev->acpi_handle) { |
Tejun Heo | 233f112 | 2008-03-12 14:24:43 +0900 | [diff] [blame] | 288 | /* we might be on a docking station */ |
| 289 | register_hotplug_dock_device(dev->acpi_handle, |
Shaohua Li | 1253f7a | 2008-08-28 10:06:16 +0800 | [diff] [blame] | 290 | &ata_acpi_dev_dock_ops, dev); |
Tejun Heo | 233f112 | 2008-03-12 14:24:43 +0900 | [diff] [blame] | 291 | } |
Matthew Garrett | 237d844 | 2007-10-03 01:24:16 +0100 | [diff] [blame] | 292 | } |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 293 | } |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 294 | } |
| 295 | |
| 296 | /** |
Tejun Heo | 562f0c2 | 2007-12-15 15:05:01 +0900 | [diff] [blame] | 297 | * ata_acpi_dissociate - dissociate ATA host from ACPI objects |
| 298 | * @host: target ATA host |
| 299 | * |
| 300 | * This function is called during driver detach after the whole host |
| 301 | * is shut down. |
| 302 | * |
| 303 | * LOCKING: |
| 304 | * EH context. |
| 305 | */ |
| 306 | void ata_acpi_dissociate(struct ata_host *host) |
| 307 | { |
Tejun Heo | c05e6ff | 2007-12-15 15:05:02 +0900 | [diff] [blame] | 308 | int i; |
| 309 | |
| 310 | /* Restore initial _GTM values so that driver which attaches |
| 311 | * afterward can use them too. |
| 312 | */ |
| 313 | for (i = 0; i < host->n_ports; i++) { |
| 314 | struct ata_port *ap = host->ports[i]; |
| 315 | const struct ata_acpi_gtm *gtm = ata_acpi_init_gtm(ap); |
| 316 | |
| 317 | if (ap->acpi_handle && gtm) |
| 318 | ata_acpi_stm(ap, gtm); |
| 319 | } |
Tejun Heo | 562f0c2 | 2007-12-15 15:05:01 +0900 | [diff] [blame] | 320 | } |
| 321 | |
| 322 | /** |
Tejun Heo | 64578a3 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 323 | * ata_acpi_gtm - execute _GTM |
| 324 | * @ap: target ATA port |
| 325 | * @gtm: out parameter for _GTM result |
| 326 | * |
| 327 | * Evaluate _GTM and store the result in @gtm. |
| 328 | * |
| 329 | * LOCKING: |
| 330 | * EH context. |
| 331 | * |
| 332 | * RETURNS: |
| 333 | * 0 on success, -ENOENT if _GTM doesn't exist, -errno on failure. |
| 334 | */ |
Tejun Heo | 0d02f0b | 2007-12-15 15:04:57 +0900 | [diff] [blame] | 335 | 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] | 336 | { |
| 337 | struct acpi_buffer output = { .length = ACPI_ALLOCATE_BUFFER }; |
| 338 | union acpi_object *out_obj; |
| 339 | acpi_status status; |
| 340 | int rc = 0; |
| 341 | |
| 342 | status = acpi_evaluate_object(ap->acpi_handle, "_GTM", NULL, &output); |
| 343 | |
| 344 | rc = -ENOENT; |
| 345 | if (status == AE_NOT_FOUND) |
| 346 | goto out_free; |
| 347 | |
| 348 | rc = -EINVAL; |
| 349 | if (ACPI_FAILURE(status)) { |
| 350 | ata_port_printk(ap, KERN_ERR, |
| 351 | "ACPI get timing mode failed (AE 0x%x)\n", |
| 352 | status); |
| 353 | goto out_free; |
| 354 | } |
| 355 | |
| 356 | out_obj = output.pointer; |
| 357 | if (out_obj->type != ACPI_TYPE_BUFFER) { |
| 358 | ata_port_printk(ap, KERN_WARNING, |
| 359 | "_GTM returned unexpected object type 0x%x\n", |
| 360 | out_obj->type); |
| 361 | |
| 362 | goto out_free; |
| 363 | } |
| 364 | |
| 365 | if (out_obj->buffer.length != sizeof(struct ata_acpi_gtm)) { |
| 366 | ata_port_printk(ap, KERN_ERR, |
| 367 | "_GTM returned invalid length %d\n", |
| 368 | out_obj->buffer.length); |
| 369 | goto out_free; |
| 370 | } |
| 371 | |
| 372 | memcpy(gtm, out_obj->buffer.pointer, sizeof(struct ata_acpi_gtm)); |
| 373 | rc = 0; |
| 374 | out_free: |
| 375 | kfree(output.pointer); |
| 376 | return rc; |
| 377 | } |
| 378 | |
Alan Cox | badff03 | 2007-10-04 21:28:18 +0100 | [diff] [blame] | 379 | EXPORT_SYMBOL_GPL(ata_acpi_gtm); |
| 380 | |
Tejun Heo | 64578a3 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 381 | /** |
| 382 | * ata_acpi_stm - execute _STM |
| 383 | * @ap: target ATA port |
| 384 | * @stm: timing parameter to _STM |
| 385 | * |
| 386 | * Evaluate _STM with timing parameter @stm. |
| 387 | * |
| 388 | * LOCKING: |
| 389 | * EH context. |
| 390 | * |
| 391 | * RETURNS: |
| 392 | * 0 on success, -ENOENT if _STM doesn't exist, -errno on failure. |
| 393 | */ |
Tejun Heo | 0d02f0b | 2007-12-15 15:04:57 +0900 | [diff] [blame] | 394 | 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] | 395 | { |
| 396 | acpi_status status; |
Tejun Heo | 0d02f0b | 2007-12-15 15:04:57 +0900 | [diff] [blame] | 397 | struct ata_acpi_gtm stm_buf = *stm; |
Tejun Heo | 64578a3 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 398 | struct acpi_object_list input; |
| 399 | union acpi_object in_params[3]; |
| 400 | |
| 401 | in_params[0].type = ACPI_TYPE_BUFFER; |
| 402 | in_params[0].buffer.length = sizeof(struct ata_acpi_gtm); |
Tejun Heo | 0d02f0b | 2007-12-15 15:04:57 +0900 | [diff] [blame] | 403 | in_params[0].buffer.pointer = (u8 *)&stm_buf; |
Tejun Heo | 64578a3 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 404 | /* Buffers for id may need byteswapping ? */ |
| 405 | in_params[1].type = ACPI_TYPE_BUFFER; |
| 406 | in_params[1].buffer.length = 512; |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 407 | in_params[1].buffer.pointer = (u8 *)ap->link.device[0].id; |
Tejun Heo | 64578a3 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 408 | in_params[2].type = ACPI_TYPE_BUFFER; |
| 409 | in_params[2].buffer.length = 512; |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 410 | in_params[2].buffer.pointer = (u8 *)ap->link.device[1].id; |
Tejun Heo | 64578a3 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 411 | |
| 412 | input.count = 3; |
| 413 | input.pointer = in_params; |
| 414 | |
| 415 | status = acpi_evaluate_object(ap->acpi_handle, "_STM", &input, NULL); |
| 416 | |
| 417 | if (status == AE_NOT_FOUND) |
| 418 | return -ENOENT; |
| 419 | if (ACPI_FAILURE(status)) { |
| 420 | ata_port_printk(ap, KERN_ERR, |
| 421 | "ACPI set timing mode failed (status=0x%x)\n", status); |
| 422 | return -EINVAL; |
| 423 | } |
| 424 | return 0; |
| 425 | } |
| 426 | |
Alan Cox | badff03 | 2007-10-04 21:28:18 +0100 | [diff] [blame] | 427 | EXPORT_SYMBOL_GPL(ata_acpi_stm); |
| 428 | |
Tejun Heo | 64578a3 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 429 | /** |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 430 | * ata_dev_get_GTF - get the drive bootup default taskfile settings |
Tejun Heo | 3a32a8e | 2007-05-05 23:50:38 +0900 | [diff] [blame] | 431 | * @dev: target ATA device |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 432 | * @gtf: output parameter for buffer containing _GTF taskfile arrays |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 433 | * |
| 434 | * This applies to both PATA and SATA drives. |
| 435 | * |
| 436 | * The _GTF method has no input parameters. |
| 437 | * It returns a variable number of register set values (registers |
| 438 | * hex 1F1..1F7, taskfiles). |
| 439 | * The <variable number> is not known in advance, so have ACPI-CA |
| 440 | * allocate the buffer as needed and return it, then free it later. |
| 441 | * |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 442 | * LOCKING: |
| 443 | * EH context. |
| 444 | * |
| 445 | * RETURNS: |
Tejun Heo | 66fa7f2 | 2007-12-15 15:05:04 +0900 | [diff] [blame] | 446 | * Number of taskfiles on success, 0 if _GTF doesn't exist. -EINVAL |
| 447 | * if _GTF is invalid. |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 448 | */ |
Tejun Heo | 398e078 | 2007-12-15 15:05:03 +0900 | [diff] [blame] | 449 | 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] | 450 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 451 | struct ata_port *ap = dev->link->ap; |
Tejun Heo | 3a32a8e | 2007-05-05 23:50:38 +0900 | [diff] [blame] | 452 | acpi_status status; |
Tejun Heo | 3a32a8e | 2007-05-05 23:50:38 +0900 | [diff] [blame] | 453 | struct acpi_buffer output; |
| 454 | union acpi_object *out_obj; |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 455 | int rc = 0; |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 456 | |
Tejun Heo | 398e078 | 2007-12-15 15:05:03 +0900 | [diff] [blame] | 457 | /* if _GTF is cached, use the cached value */ |
| 458 | if (dev->gtf_cache) { |
| 459 | out_obj = dev->gtf_cache; |
| 460 | goto done; |
| 461 | } |
| 462 | |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 463 | /* set up output buffer */ |
| 464 | output.length = ACPI_ALLOCATE_BUFFER; |
| 465 | output.pointer = NULL; /* ACPI-CA sets this; save/free it later */ |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 466 | |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 467 | if (ata_msg_probe(ap)) |
Tejun Heo | 3a32a8e | 2007-05-05 23:50:38 +0900 | [diff] [blame] | 468 | ata_dev_printk(dev, KERN_DEBUG, "%s: ENTER: port#: %d\n", |
Harvey Harrison | 7f5e4e8 | 2008-03-05 18:24:52 -0800 | [diff] [blame] | 469 | __func__, ap->port_no); |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 470 | |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 471 | /* _GTF has no input parameters */ |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 472 | status = acpi_evaluate_object(dev->acpi_handle, "_GTF", NULL, &output); |
Tejun Heo | 398e078 | 2007-12-15 15:05:03 +0900 | [diff] [blame] | 473 | out_obj = dev->gtf_cache = output.pointer; |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 474 | |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 475 | if (ACPI_FAILURE(status)) { |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 476 | if (status != AE_NOT_FOUND) { |
| 477 | ata_dev_printk(dev, KERN_WARNING, |
| 478 | "_GTF evaluation failed (AE 0x%x)\n", |
| 479 | status); |
Tejun Heo | 66fa7f2 | 2007-12-15 15:05:04 +0900 | [diff] [blame] | 480 | rc = -EINVAL; |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 481 | } |
| 482 | goto out_free; |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 483 | } |
| 484 | |
| 485 | if (!output.length || !output.pointer) { |
| 486 | if (ata_msg_probe(ap)) |
Tejun Heo | 3a32a8e | 2007-05-05 23:50:38 +0900 | [diff] [blame] | 487 | ata_dev_printk(dev, KERN_DEBUG, "%s: Run _GTF: " |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 488 | "length or ptr is NULL (0x%llx, 0x%p)\n", |
Harvey Harrison | 7f5e4e8 | 2008-03-05 18:24:52 -0800 | [diff] [blame] | 489 | __func__, |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 490 | (unsigned long long)output.length, |
| 491 | output.pointer); |
Tejun Heo | 66fa7f2 | 2007-12-15 15:05:04 +0900 | [diff] [blame] | 492 | rc = -EINVAL; |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 493 | goto out_free; |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 494 | } |
| 495 | |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 496 | if (out_obj->type != ACPI_TYPE_BUFFER) { |
Tejun Heo | 69b16a5 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 497 | ata_dev_printk(dev, KERN_WARNING, |
| 498 | "_GTF unexpected object type 0x%x\n", |
| 499 | out_obj->type); |
Tejun Heo | 66fa7f2 | 2007-12-15 15:05:04 +0900 | [diff] [blame] | 500 | rc = -EINVAL; |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 501 | goto out_free; |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 502 | } |
| 503 | |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 504 | if (out_obj->buffer.length % REGS_PER_GTF) { |
Tejun Heo | 69b16a5 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 505 | ata_dev_printk(dev, KERN_WARNING, |
| 506 | "unexpected _GTF length (%d)\n", |
| 507 | out_obj->buffer.length); |
Tejun Heo | 66fa7f2 | 2007-12-15 15:05:04 +0900 | [diff] [blame] | 508 | rc = -EINVAL; |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 509 | goto out_free; |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 510 | } |
| 511 | |
Tejun Heo | 398e078 | 2007-12-15 15:05:03 +0900 | [diff] [blame] | 512 | done: |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 513 | rc = out_obj->buffer.length / REGS_PER_GTF; |
Tejun Heo | 398e078 | 2007-12-15 15:05:03 +0900 | [diff] [blame] | 514 | if (gtf) { |
| 515 | *gtf = (void *)out_obj->buffer.pointer; |
| 516 | if (ata_msg_probe(ap)) |
| 517 | ata_dev_printk(dev, KERN_DEBUG, |
| 518 | "%s: returning gtf=%p, gtf_count=%d\n", |
Harvey Harrison | 7f5e4e8 | 2008-03-05 18:24:52 -0800 | [diff] [blame] | 519 | __func__, *gtf, rc); |
Tejun Heo | 398e078 | 2007-12-15 15:05:03 +0900 | [diff] [blame] | 520 | } |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 521 | return rc; |
| 522 | |
| 523 | out_free: |
Tejun Heo | 398e078 | 2007-12-15 15:05:03 +0900 | [diff] [blame] | 524 | ata_acpi_clear_gtf(dev); |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 525 | return rc; |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 526 | } |
| 527 | |
Tejun Heo | 7c77fa4 | 2007-12-18 16:33:03 +0900 | [diff] [blame] | 528 | /** |
| 529 | * ata_acpi_gtm_xfermode - determine xfermode from GTM parameter |
| 530 | * @dev: target device |
| 531 | * @gtm: GTM parameter to use |
| 532 | * |
| 533 | * Determine xfermask for @dev from @gtm. |
| 534 | * |
| 535 | * LOCKING: |
| 536 | * None. |
| 537 | * |
| 538 | * RETURNS: |
| 539 | * Determined xfermask. |
| 540 | */ |
| 541 | unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev, |
| 542 | const struct ata_acpi_gtm *gtm) |
| 543 | { |
Tejun Heo | a0f79b9 | 2007-12-18 16:33:05 +0900 | [diff] [blame] | 544 | unsigned long xfer_mask = 0; |
| 545 | unsigned int type; |
| 546 | int unit; |
| 547 | u8 mode; |
Tejun Heo | 7c77fa4 | 2007-12-18 16:33:03 +0900 | [diff] [blame] | 548 | |
| 549 | /* we always use the 0 slot for crap hardware */ |
| 550 | unit = dev->devno; |
| 551 | if (!(gtm->flags & 0x10)) |
| 552 | unit = 0; |
| 553 | |
Tejun Heo | a0f79b9 | 2007-12-18 16:33:05 +0900 | [diff] [blame] | 554 | /* PIO */ |
| 555 | mode = ata_timing_cycle2mode(ATA_SHIFT_PIO, gtm->drive[unit].pio); |
| 556 | xfer_mask |= ata_xfer_mode2mask(mode); |
Tejun Heo | 7c77fa4 | 2007-12-18 16:33:03 +0900 | [diff] [blame] | 557 | |
| 558 | /* See if we have MWDMA or UDMA data. We don't bother with |
| 559 | * MWDMA if UDMA is available as this means the BIOS set UDMA |
| 560 | * and our error changedown if it works is UDMA to PIO anyway. |
| 561 | */ |
Tejun Heo | a0f79b9 | 2007-12-18 16:33:05 +0900 | [diff] [blame] | 562 | if (!(gtm->flags & (1 << (2 * unit)))) |
| 563 | type = ATA_SHIFT_MWDMA; |
| 564 | else |
| 565 | type = ATA_SHIFT_UDMA; |
Tejun Heo | 7c77fa4 | 2007-12-18 16:33:03 +0900 | [diff] [blame] | 566 | |
Tejun Heo | a0f79b9 | 2007-12-18 16:33:05 +0900 | [diff] [blame] | 567 | mode = ata_timing_cycle2mode(type, gtm->drive[unit].dma); |
| 568 | xfer_mask |= ata_xfer_mode2mask(mode); |
| 569 | |
| 570 | return xfer_mask; |
Tejun Heo | 7c77fa4 | 2007-12-18 16:33:03 +0900 | [diff] [blame] | 571 | } |
| 572 | EXPORT_SYMBOL_GPL(ata_acpi_gtm_xfermask); |
| 573 | |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 574 | /** |
Alan Cox | e1ddb4b | 2007-08-16 02:33:36 -0400 | [diff] [blame] | 575 | * ata_acpi_cbl_80wire - Check for 80 wire cable |
| 576 | * @ap: Port to check |
Tejun Heo | 021ee9a | 2007-12-18 16:33:06 +0900 | [diff] [blame] | 577 | * @gtm: GTM data to use |
Alan Cox | e1ddb4b | 2007-08-16 02:33:36 -0400 | [diff] [blame] | 578 | * |
Tejun Heo | 021ee9a | 2007-12-18 16:33:06 +0900 | [diff] [blame] | 579 | * Return 1 if the @gtm indicates the BIOS selected an 80wire mode. |
Alan Cox | e1ddb4b | 2007-08-16 02:33:36 -0400 | [diff] [blame] | 580 | */ |
Tejun Heo | 021ee9a | 2007-12-18 16:33:06 +0900 | [diff] [blame] | 581 | 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] | 582 | { |
Tejun Heo | 021ee9a | 2007-12-18 16:33:06 +0900 | [diff] [blame] | 583 | struct ata_device *dev; |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 584 | |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 585 | ata_for_each_dev(dev, &ap->link, ENABLED) { |
Tejun Heo | 021ee9a | 2007-12-18 16:33:06 +0900 | [diff] [blame] | 586 | unsigned long xfer_mask, udma_mask; |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 587 | |
Tejun Heo | 021ee9a | 2007-12-18 16:33:06 +0900 | [diff] [blame] | 588 | xfer_mask = ata_acpi_gtm_xfermask(dev, gtm); |
| 589 | ata_unpack_xfermask(xfer_mask, NULL, NULL, &udma_mask); |
| 590 | |
| 591 | if (udma_mask & ~ATA_UDMA_MASK_40C) |
| 592 | return 1; |
| 593 | } |
| 594 | |
Alan Cox | e1ddb4b | 2007-08-16 02:33:36 -0400 | [diff] [blame] | 595 | return 0; |
| 596 | } |
Alan Cox | e1ddb4b | 2007-08-16 02:33:36 -0400 | [diff] [blame] | 597 | EXPORT_SYMBOL_GPL(ata_acpi_cbl_80wire); |
| 598 | |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 599 | static void ata_acpi_gtf_to_tf(struct ata_device *dev, |
| 600 | const struct ata_acpi_gtf *gtf, |
| 601 | struct ata_taskfile *tf) |
| 602 | { |
| 603 | ata_tf_init(dev, tf); |
| 604 | |
| 605 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
| 606 | tf->protocol = ATA_PROT_NODATA; |
| 607 | tf->feature = gtf->tf[0]; /* 0x1f1 */ |
| 608 | tf->nsect = gtf->tf[1]; /* 0x1f2 */ |
| 609 | tf->lbal = gtf->tf[2]; /* 0x1f3 */ |
| 610 | tf->lbam = gtf->tf[3]; /* 0x1f4 */ |
| 611 | tf->lbah = gtf->tf[4]; /* 0x1f5 */ |
| 612 | tf->device = gtf->tf[5]; /* 0x1f6 */ |
| 613 | tf->command = gtf->tf[6]; /* 0x1f7 */ |
| 614 | } |
| 615 | |
| 616 | static int ata_acpi_filter_tf(const struct ata_taskfile *tf, |
| 617 | const struct ata_taskfile *ptf) |
| 618 | { |
| 619 | if (ata_acpi_gtf_filter & ATA_ACPI_FILTER_SETXFER) { |
| 620 | /* libata doesn't use ACPI to configure transfer mode. |
| 621 | * It will only confuse device configuration. Skip. |
| 622 | */ |
| 623 | if (tf->command == ATA_CMD_SET_FEATURES && |
| 624 | tf->feature == SETFEATURES_XFER) |
| 625 | return 1; |
| 626 | } |
| 627 | |
| 628 | if (ata_acpi_gtf_filter & ATA_ACPI_FILTER_LOCK) { |
| 629 | /* BIOS writers, sorry but we don't wanna lock |
| 630 | * features unless the user explicitly said so. |
| 631 | */ |
| 632 | |
| 633 | /* DEVICE CONFIGURATION FREEZE LOCK */ |
| 634 | if (tf->command == ATA_CMD_CONF_OVERLAY && |
| 635 | tf->feature == ATA_DCO_FREEZE_LOCK) |
| 636 | return 1; |
| 637 | |
| 638 | /* SECURITY FREEZE LOCK */ |
| 639 | if (tf->command == ATA_CMD_SEC_FREEZE_LOCK) |
| 640 | return 1; |
| 641 | |
| 642 | /* SET MAX LOCK and SET MAX FREEZE LOCK */ |
| 643 | if ((!ptf || ptf->command != ATA_CMD_READ_NATIVE_MAX) && |
| 644 | tf->command == ATA_CMD_SET_MAX && |
| 645 | (tf->feature == ATA_SET_MAX_LOCK || |
| 646 | tf->feature == ATA_SET_MAX_FREEZE_LOCK)) |
| 647 | return 1; |
| 648 | } |
| 649 | |
Tejun Heo | b344991 | 2008-07-06 23:15:03 +0900 | [diff] [blame] | 650 | if (ata_acpi_gtf_filter & ATA_ACPI_FILTER_DIPM) { |
| 651 | /* inhibit enabling DIPM */ |
| 652 | if (tf->command == ATA_CMD_SET_FEATURES && |
| 653 | tf->feature == SETFEATURES_SATA_ENABLE && |
| 654 | tf->nsect == SATA_DIPM) |
| 655 | return 1; |
| 656 | } |
| 657 | |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 658 | return 0; |
| 659 | } |
| 660 | |
Alan Cox | e1ddb4b | 2007-08-16 02:33:36 -0400 | [diff] [blame] | 661 | /** |
Tejun Heo | 0e8634b | 2007-12-15 15:05:05 +0900 | [diff] [blame] | 662 | * ata_acpi_run_tf - send taskfile registers to host controller |
Tejun Heo | 3a32a8e | 2007-05-05 23:50:38 +0900 | [diff] [blame] | 663 | * @dev: target ATA device |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 664 | * @gtf: raw ATA taskfile register set (0x1f1 - 0x1f7) |
| 665 | * |
| 666 | * Outputs ATA taskfile to standard ATA host controller using MMIO |
| 667 | * or PIO as indicated by the ATA_FLAG_MMIO flag. |
| 668 | * Writes the control, feature, nsect, lbal, lbam, and lbah registers. |
| 669 | * Optionally (ATA_TFLAG_LBA48) writes hob_feature, hob_nsect, |
| 670 | * hob_lbal, hob_lbam, and hob_lbah. |
| 671 | * |
| 672 | * This function waits for idle (!BUSY and !DRQ) after writing |
| 673 | * registers. If the control register has a new value, this |
| 674 | * function also waits for idle after writing control and before |
| 675 | * writing the remaining registers. |
| 676 | * |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 677 | * LOCKING: |
| 678 | * EH context. |
| 679 | * |
| 680 | * RETURNS: |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 681 | * 1 if command is executed successfully. 0 if ignored, rejected or |
| 682 | * filtered out, -errno on other errors. |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 683 | */ |
Tejun Heo | 0e8634b | 2007-12-15 15:05:05 +0900 | [diff] [blame] | 684 | static int ata_acpi_run_tf(struct ata_device *dev, |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 685 | const struct ata_acpi_gtf *gtf, |
| 686 | const struct ata_acpi_gtf *prev_gtf) |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 687 | { |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 688 | struct ata_taskfile *pptf = NULL; |
| 689 | struct ata_taskfile tf, ptf, rtf; |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 690 | unsigned int err_mask; |
Tejun Heo | 0e8634b | 2007-12-15 15:05:05 +0900 | [diff] [blame] | 691 | const char *level; |
| 692 | char msg[60]; |
| 693 | int rc; |
Jeff Garzik | fc16c25 | 2007-02-24 21:05:01 -0500 | [diff] [blame] | 694 | |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 695 | if ((gtf->tf[0] == 0) && (gtf->tf[1] == 0) && (gtf->tf[2] == 0) |
| 696 | && (gtf->tf[3] == 0) && (gtf->tf[4] == 0) && (gtf->tf[5] == 0) |
| 697 | && (gtf->tf[6] == 0)) |
| 698 | return 0; |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 699 | |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 700 | ata_acpi_gtf_to_tf(dev, gtf, &tf); |
| 701 | if (prev_gtf) { |
| 702 | ata_acpi_gtf_to_tf(dev, prev_gtf, &ptf); |
| 703 | pptf = &ptf; |
| 704 | } |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 705 | |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 706 | if (!ata_acpi_filter_tf(&tf, pptf)) { |
| 707 | rtf = tf; |
| 708 | err_mask = ata_exec_internal(dev, &rtf, NULL, |
| 709 | DMA_NONE, NULL, 0, 0); |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 710 | |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 711 | switch (err_mask) { |
| 712 | case 0: |
| 713 | level = KERN_DEBUG; |
| 714 | snprintf(msg, sizeof(msg), "succeeded"); |
| 715 | rc = 1; |
| 716 | break; |
Tejun Heo | 0e8634b | 2007-12-15 15:05:05 +0900 | [diff] [blame] | 717 | |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 718 | case AC_ERR_DEV: |
| 719 | level = KERN_INFO; |
| 720 | snprintf(msg, sizeof(msg), |
| 721 | "rejected by device (Stat=0x%02x Err=0x%02x)", |
| 722 | rtf.command, rtf.feature); |
| 723 | rc = 0; |
| 724 | break; |
Tejun Heo | 0e8634b | 2007-12-15 15:05:05 +0900 | [diff] [blame] | 725 | |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 726 | default: |
| 727 | level = KERN_ERR; |
| 728 | snprintf(msg, sizeof(msg), |
| 729 | "failed (Emask=0x%x Stat=0x%02x Err=0x%02x)", |
| 730 | err_mask, rtf.command, rtf.feature); |
| 731 | rc = -EIO; |
| 732 | break; |
| 733 | } |
| 734 | } else { |
Tejun Heo | 0e8634b | 2007-12-15 15:05:05 +0900 | [diff] [blame] | 735 | level = KERN_INFO; |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 736 | snprintf(msg, sizeof(msg), "filtered out"); |
Tejun Heo | 0e8634b | 2007-12-15 15:05:05 +0900 | [diff] [blame] | 737 | rc = 0; |
Tejun Heo | 4700c4b | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 738 | } |
| 739 | |
Tejun Heo | 0e8634b | 2007-12-15 15:05:05 +0900 | [diff] [blame] | 740 | ata_dev_printk(dev, level, |
| 741 | "ACPI cmd %02x/%02x:%02x:%02x:%02x:%02x:%02x %s\n", |
| 742 | tf.command, tf.feature, tf.nsect, tf.lbal, |
| 743 | tf.lbam, tf.lbah, tf.device, msg); |
| 744 | |
| 745 | return rc; |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 746 | } |
| 747 | |
| 748 | /** |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 749 | * ata_acpi_exec_tfs - get then write drive taskfile settings |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 750 | * @dev: target ATA device |
Martin Olsson | 98a1708 | 2009-04-22 18:21:29 +0200 | [diff] [blame] | 751 | * @nr_executed: out parameter for the number of executed commands |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 752 | * |
Martin Olsson | 98a1708 | 2009-04-22 18:21:29 +0200 | [diff] [blame] | 753 | * Evaluate _GTF and execute returned taskfiles. |
Tejun Heo | 69b16a5 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 754 | * |
| 755 | * LOCKING: |
| 756 | * EH context. |
| 757 | * |
| 758 | * RETURNS: |
Tejun Heo | 66fa7f2 | 2007-12-15 15:05:04 +0900 | [diff] [blame] | 759 | * Number of executed taskfiles on success, 0 if _GTF doesn't exist. |
| 760 | * -errno on other errors. |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 761 | */ |
Tejun Heo | 66fa7f2 | 2007-12-15 15:05:04 +0900 | [diff] [blame] | 762 | 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] | 763 | { |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 764 | struct ata_acpi_gtf *gtf = NULL, *pgtf = NULL; |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 765 | int gtf_count, i, rc; |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 766 | |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 767 | /* get taskfiles */ |
Tejun Heo | 66fa7f2 | 2007-12-15 15:05:04 +0900 | [diff] [blame] | 768 | rc = ata_dev_get_GTF(dev, >f); |
| 769 | if (rc < 0) |
| 770 | return rc; |
| 771 | gtf_count = rc; |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 772 | |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 773 | /* execute them */ |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 774 | for (i = 0; i < gtf_count; i++, gtf++) { |
| 775 | rc = ata_acpi_run_tf(dev, gtf, pgtf); |
Tejun Heo | 0e8634b | 2007-12-15 15:05:05 +0900 | [diff] [blame] | 776 | if (rc < 0) |
| 777 | break; |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 778 | if (rc) { |
Tejun Heo | 0e8634b | 2007-12-15 15:05:05 +0900 | [diff] [blame] | 779 | (*nr_executed)++; |
Tejun Heo | 3264a8d | 2007-12-15 15:05:06 +0900 | [diff] [blame] | 780 | pgtf = gtf; |
| 781 | } |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 782 | } |
| 783 | |
Tejun Heo | 398e078 | 2007-12-15 15:05:03 +0900 | [diff] [blame] | 784 | ata_acpi_clear_gtf(dev); |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 785 | |
Tejun Heo | 0e8634b | 2007-12-15 15:05:05 +0900 | [diff] [blame] | 786 | if (rc < 0) |
| 787 | return rc; |
| 788 | return 0; |
Kristen Carlson Accardi | 11ef697 | 2006-09-28 11:29:01 -0700 | [diff] [blame] | 789 | } |
| 790 | |
Kristen Carlson Accardi | 7ea1fbc | 2006-09-28 11:29:12 -0700 | [diff] [blame] | 791 | /** |
| 792 | * ata_acpi_push_id - send Identify data to drive |
Tejun Heo | 3a32a8e | 2007-05-05 23:50:38 +0900 | [diff] [blame] | 793 | * @dev: target ATA device |
Kristen Carlson Accardi | 7ea1fbc | 2006-09-28 11:29:12 -0700 | [diff] [blame] | 794 | * |
| 795 | * _SDD ACPI object: for SATA mode only |
| 796 | * Must be after Identify (Packet) Device -- uses its data |
| 797 | * ATM this function never returns a failure. It is an optional |
| 798 | * method and if it fails for whatever reason, we should still |
| 799 | * just keep going. |
Tejun Heo | 69b16a5 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 800 | * |
| 801 | * LOCKING: |
| 802 | * EH context. |
| 803 | * |
| 804 | * RETURNS: |
| 805 | * 0 on success, -errno on failure. |
Kristen Carlson Accardi | 7ea1fbc | 2006-09-28 11:29:12 -0700 | [diff] [blame] | 806 | */ |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 807 | static int ata_acpi_push_id(struct ata_device *dev) |
Kristen Carlson Accardi | 7ea1fbc | 2006-09-28 11:29:12 -0700 | [diff] [blame] | 808 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 809 | struct ata_port *ap = dev->link->ap; |
Tejun Heo | 3a32a8e | 2007-05-05 23:50:38 +0900 | [diff] [blame] | 810 | int err; |
Tejun Heo | 3a32a8e | 2007-05-05 23:50:38 +0900 | [diff] [blame] | 811 | acpi_status status; |
| 812 | struct acpi_object_list input; |
| 813 | union acpi_object in_params[1]; |
Kristen Carlson Accardi | 7ea1fbc | 2006-09-28 11:29:12 -0700 | [diff] [blame] | 814 | |
Kristen Carlson Accardi | 7ea1fbc | 2006-09-28 11:29:12 -0700 | [diff] [blame] | 815 | if (ata_msg_probe(ap)) |
Tejun Heo | 3a32a8e | 2007-05-05 23:50:38 +0900 | [diff] [blame] | 816 | ata_dev_printk(dev, KERN_DEBUG, "%s: ix = %d, port#: %d\n", |
Harvey Harrison | 7f5e4e8 | 2008-03-05 18:24:52 -0800 | [diff] [blame] | 817 | __func__, dev->devno, ap->port_no); |
Kristen Carlson Accardi | 7ea1fbc | 2006-09-28 11:29:12 -0700 | [diff] [blame] | 818 | |
Kristen Carlson Accardi | 7ea1fbc | 2006-09-28 11:29:12 -0700 | [diff] [blame] | 819 | /* Give the drive Identify data to the drive via the _SDD method */ |
| 820 | /* _SDD: set up input parameters */ |
| 821 | input.count = 1; |
| 822 | input.pointer = in_params; |
| 823 | in_params[0].type = ACPI_TYPE_BUFFER; |
Tejun Heo | 3a32a8e | 2007-05-05 23:50:38 +0900 | [diff] [blame] | 824 | in_params[0].buffer.length = sizeof(dev->id[0]) * ATA_ID_WORDS; |
| 825 | in_params[0].buffer.pointer = (u8 *)dev->id; |
Kristen Carlson Accardi | 7ea1fbc | 2006-09-28 11:29:12 -0700 | [diff] [blame] | 826 | /* Output buffer: _SDD has no output */ |
| 827 | |
| 828 | /* It's OK for _SDD to be missing too. */ |
Tejun Heo | 3a32a8e | 2007-05-05 23:50:38 +0900 | [diff] [blame] | 829 | swap_buf_le16(dev->id, ATA_ID_WORDS); |
Tejun Heo | fafbae8 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 830 | status = acpi_evaluate_object(dev->acpi_handle, "_SDD", &input, NULL); |
Tejun Heo | 3a32a8e | 2007-05-05 23:50:38 +0900 | [diff] [blame] | 831 | swap_buf_le16(dev->id, ATA_ID_WORDS); |
Kristen Carlson Accardi | 7ea1fbc | 2006-09-28 11:29:12 -0700 | [diff] [blame] | 832 | |
| 833 | err = ACPI_FAILURE(status) ? -EIO : 0; |
Tejun Heo | 69b16a5 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 834 | if (err < 0) |
| 835 | ata_dev_printk(dev, KERN_WARNING, |
| 836 | "ACPI _SDD failed (AE 0x%x)\n", status); |
Kristen Carlson Accardi | 7ea1fbc | 2006-09-28 11:29:12 -0700 | [diff] [blame] | 837 | |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 838 | return err; |
Kristen Carlson Accardi | 7ea1fbc | 2006-09-28 11:29:12 -0700 | [diff] [blame] | 839 | } |
| 840 | |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 841 | /** |
Tejun Heo | 64578a3 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 842 | * ata_acpi_on_suspend - ATA ACPI hook called on suspend |
| 843 | * @ap: target ATA port |
| 844 | * |
| 845 | * This function is called when @ap is about to be suspended. All |
| 846 | * devices are already put to sleep but the port_suspend() callback |
| 847 | * hasn't been executed yet. Error return from this function aborts |
| 848 | * suspend. |
| 849 | * |
| 850 | * LOCKING: |
| 851 | * EH context. |
| 852 | * |
| 853 | * RETURNS: |
| 854 | * 0 on success, -errno on failure. |
| 855 | */ |
| 856 | int ata_acpi_on_suspend(struct ata_port *ap) |
| 857 | { |
Tejun Heo | c05e6ff | 2007-12-15 15:05:02 +0900 | [diff] [blame] | 858 | /* nada */ |
| 859 | return 0; |
Tejun Heo | 64578a3 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 860 | } |
| 861 | |
| 862 | /** |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 863 | * ata_acpi_on_resume - ATA ACPI hook called on resume |
| 864 | * @ap: target ATA port |
| 865 | * |
| 866 | * This function is called when @ap is resumed - right after port |
| 867 | * itself is resumed but before any EH action is taken. |
| 868 | * |
| 869 | * LOCKING: |
| 870 | * EH context. |
| 871 | */ |
| 872 | void ata_acpi_on_resume(struct ata_port *ap) |
| 873 | { |
Tejun Heo | c05e6ff | 2007-12-15 15:05:02 +0900 | [diff] [blame] | 874 | const struct ata_acpi_gtm *gtm = ata_acpi_init_gtm(ap); |
Tejun Heo | f58229f | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 875 | struct ata_device *dev; |
Kristen Carlson Accardi | 7ea1fbc | 2006-09-28 11:29:12 -0700 | [diff] [blame] | 876 | |
Tejun Heo | 398e078 | 2007-12-15 15:05:03 +0900 | [diff] [blame] | 877 | if (ap->acpi_handle && gtm) { |
| 878 | /* _GTM valid */ |
| 879 | |
| 880 | /* restore timing parameters */ |
Tejun Heo | c05e6ff | 2007-12-15 15:05:02 +0900 | [diff] [blame] | 881 | ata_acpi_stm(ap, gtm); |
Tejun Heo | 64578a3 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 882 | |
Tejun Heo | 398e078 | 2007-12-15 15:05:03 +0900 | [diff] [blame] | 883 | /* _GTF should immediately follow _STM so that it can |
| 884 | * use values set by _STM. Cache _GTF result and |
| 885 | * schedule _GTF. |
| 886 | */ |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 887 | ata_for_each_dev(dev, &ap->link, ALL) { |
Tejun Heo | 398e078 | 2007-12-15 15:05:03 +0900 | [diff] [blame] | 888 | ata_acpi_clear_gtf(dev); |
Shaohua Li | 48feb3c | 2008-03-25 16:50:45 +0800 | [diff] [blame] | 889 | if (ata_dev_enabled(dev) && |
| 890 | ata_dev_get_GTF(dev, NULL) >= 0) |
Tejun Heo | 398e078 | 2007-12-15 15:05:03 +0900 | [diff] [blame] | 891 | dev->flags |= ATA_DFLAG_ACPI_PENDING; |
| 892 | } |
| 893 | } else { |
| 894 | /* SATA _GTF needs to be evaulated after _SDD and |
| 895 | * there's no reason to evaluate IDE _GTF early |
| 896 | * without _STM. Clear cache and schedule _GTF. |
| 897 | */ |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 898 | ata_for_each_dev(dev, &ap->link, ALL) { |
Tejun Heo | 398e078 | 2007-12-15 15:05:03 +0900 | [diff] [blame] | 899 | ata_acpi_clear_gtf(dev); |
Shaohua Li | 48feb3c | 2008-03-25 16:50:45 +0800 | [diff] [blame] | 900 | if (ata_dev_enabled(dev)) |
| 901 | dev->flags |= ATA_DFLAG_ACPI_PENDING; |
Tejun Heo | 398e078 | 2007-12-15 15:05:03 +0900 | [diff] [blame] | 902 | } |
| 903 | } |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 904 | } |
| 905 | |
| 906 | /** |
Shaohua Li | bd3adca | 2007-11-02 09:32:38 +0800 | [diff] [blame] | 907 | * ata_acpi_set_state - set the port power state |
| 908 | * @ap: target ATA port |
| 909 | * @state: state, on/off |
| 910 | * |
| 911 | * This function executes the _PS0/_PS3 ACPI method to set the power state. |
| 912 | * ACPI spec requires _PS0 when IDE power on and _PS3 when power off |
| 913 | */ |
| 914 | void ata_acpi_set_state(struct ata_port *ap, pm_message_t state) |
| 915 | { |
| 916 | struct ata_device *dev; |
| 917 | |
| 918 | if (!ap->acpi_handle || (ap->flags & ATA_FLAG_ACPI_SATA)) |
| 919 | return; |
| 920 | |
| 921 | /* channel first and then drives for power on and vica versa |
| 922 | for power off */ |
| 923 | if (state.event == PM_EVENT_ON) |
| 924 | acpi_bus_set_power(ap->acpi_handle, ACPI_STATE_D0); |
| 925 | |
Tejun Heo | 1eca436 | 2008-11-03 20:03:17 +0900 | [diff] [blame] | 926 | ata_for_each_dev(dev, &ap->link, ENABLED) { |
| 927 | if (dev->acpi_handle) |
Shaohua Li | bd3adca | 2007-11-02 09:32:38 +0800 | [diff] [blame] | 928 | acpi_bus_set_power(dev->acpi_handle, |
| 929 | state.event == PM_EVENT_ON ? |
| 930 | ACPI_STATE_D0 : ACPI_STATE_D3); |
| 931 | } |
| 932 | if (state.event != PM_EVENT_ON) |
| 933 | acpi_bus_set_power(ap->acpi_handle, ACPI_STATE_D3); |
| 934 | } |
| 935 | |
| 936 | /** |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 937 | * ata_acpi_on_devcfg - ATA ACPI hook called on device donfiguration |
| 938 | * @dev: target ATA device |
| 939 | * |
| 940 | * This function is called when @dev is about to be configured. |
| 941 | * IDENTIFY data might have been modified after this hook is run. |
| 942 | * |
| 943 | * LOCKING: |
| 944 | * EH context. |
| 945 | * |
| 946 | * RETURNS: |
| 947 | * Positive number if IDENTIFY data needs to be refreshed, 0 if not, |
| 948 | * -errno on failure. |
| 949 | */ |
| 950 | int ata_acpi_on_devcfg(struct ata_device *dev) |
| 951 | { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 952 | struct ata_port *ap = dev->link->ap; |
| 953 | struct ata_eh_context *ehc = &ap->link.eh_context; |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 954 | int acpi_sata = ap->flags & ATA_FLAG_ACPI_SATA; |
Tejun Heo | 66fa7f2 | 2007-12-15 15:05:04 +0900 | [diff] [blame] | 955 | int nr_executed = 0; |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 956 | int rc; |
| 957 | |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 958 | if (!dev->acpi_handle) |
| 959 | return 0; |
| 960 | |
| 961 | /* do we need to do _GTF? */ |
| 962 | if (!(dev->flags & ATA_DFLAG_ACPI_PENDING) && |
| 963 | !(acpi_sata && (ehc->i.flags & ATA_EHI_DID_HARDRESET))) |
| 964 | return 0; |
| 965 | |
| 966 | /* do _SDD if SATA */ |
| 967 | if (acpi_sata) { |
| 968 | rc = ata_acpi_push_id(dev); |
| 969 | if (rc) |
| 970 | goto acpi_err; |
| 971 | } |
| 972 | |
| 973 | /* do _GTF */ |
Tejun Heo | 66fa7f2 | 2007-12-15 15:05:04 +0900 | [diff] [blame] | 974 | rc = ata_acpi_exec_tfs(dev, &nr_executed); |
| 975 | if (rc) |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 976 | goto acpi_err; |
| 977 | |
| 978 | dev->flags &= ~ATA_DFLAG_ACPI_PENDING; |
| 979 | |
| 980 | /* refresh IDENTIFY page if any _GTF command has been executed */ |
Tejun Heo | 66fa7f2 | 2007-12-15 15:05:04 +0900 | [diff] [blame] | 981 | if (nr_executed) { |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 982 | rc = ata_dev_reread_id(dev, 0); |
| 983 | if (rc < 0) { |
| 984 | ata_dev_printk(dev, KERN_ERR, "failed to IDENTIFY " |
| 985 | "after ACPI commands\n"); |
| 986 | return rc; |
| 987 | } |
| 988 | } |
| 989 | |
| 990 | return 0; |
| 991 | |
| 992 | acpi_err: |
Tejun Heo | 66fa7f2 | 2007-12-15 15:05:04 +0900 | [diff] [blame] | 993 | /* ignore evaluation failure if we can continue safely */ |
| 994 | if (rc == -EINVAL && !nr_executed && !(ap->pflags & ATA_PFLAG_FROZEN)) |
| 995 | return 0; |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 996 | |
Tejun Heo | 66fa7f2 | 2007-12-15 15:05:04 +0900 | [diff] [blame] | 997 | /* fail and let EH retry once more for unknown IO errors */ |
| 998 | if (!(dev->flags & ATA_DFLAG_ACPI_FAILED)) { |
| 999 | dev->flags |= ATA_DFLAG_ACPI_FAILED; |
| 1000 | return rc; |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 1001 | } |
Tejun Heo | 66fa7f2 | 2007-12-15 15:05:04 +0900 | [diff] [blame] | 1002 | |
| 1003 | ata_dev_printk(dev, KERN_WARNING, |
| 1004 | "ACPI: failed the second time, disabled\n"); |
| 1005 | dev->acpi_handle = NULL; |
| 1006 | |
| 1007 | /* We can safely continue if no _GTF command has been executed |
| 1008 | * and port is not frozen. |
| 1009 | */ |
| 1010 | if (!nr_executed && !(ap->pflags & ATA_PFLAG_FROZEN)) |
| 1011 | return 0; |
| 1012 | |
Tejun Heo | 6746544 | 2007-05-15 03:28:16 +0900 | [diff] [blame] | 1013 | return rc; |
| 1014 | } |
Tejun Heo | 562f0c2 | 2007-12-15 15:05:01 +0900 | [diff] [blame] | 1015 | |
| 1016 | /** |
| 1017 | * ata_acpi_on_disable - ATA ACPI hook called when a device is disabled |
| 1018 | * @dev: target ATA device |
| 1019 | * |
| 1020 | * This function is called when @dev is about to be disabled. |
| 1021 | * |
| 1022 | * LOCKING: |
| 1023 | * EH context. |
| 1024 | */ |
| 1025 | void ata_acpi_on_disable(struct ata_device *dev) |
| 1026 | { |
Tejun Heo | 398e078 | 2007-12-15 15:05:03 +0900 | [diff] [blame] | 1027 | ata_acpi_clear_gtf(dev); |
Tejun Heo | 562f0c2 | 2007-12-15 15:05:01 +0900 | [diff] [blame] | 1028 | } |