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