2 * ahci.c - AHCI SATA support
4 * Maintained by: Jeff Garzik <jgarzik@pobox.com>
5 * Please ALWAYS copy linux-ide@vger.kernel.org
8 * Copyright 2004-2005 Red Hat, Inc.
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2, or (at your option)
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; see the file COPYING. If not, write to
23 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
26 * libata documentation is available via 'make {ps|pdf}docs',
27 * as Documentation/DocBook/libata.*
29 * AHCI hardware documentation:
30 * http://www.intel.com/technology/serialata/pdf/rev1_0.pdf
31 * http://www.intel.com/technology/serialata/pdf/rev1_1.pdf
35 #include <linux/kernel.h>
36 #include <linux/module.h>
37 #include <linux/pci.h>
38 #include <linux/init.h>
39 #include <linux/blkdev.h>
40 #include <linux/delay.h>
41 #include <linux/interrupt.h>
42 #include <linux/dma-mapping.h>
43 #include <linux/device.h>
44 #include <linux/dmi.h>
45 #include <scsi/scsi_host.h>
46 #include <scsi/scsi_cmnd.h>
47 #include <linux/libata.h>
49 #define DRV_NAME "ahci"
50 #define DRV_VERSION "3.0"
52 /* Enclosure Management Control */
53 #define EM_CTRL_MSG_TYPE 0x000f0000
55 /* Enclosure Management LED Message Type */
56 #define EM_MSG_LED_HBA_PORT 0x0000000f
57 #define EM_MSG_LED_PMP_SLOT 0x0000ff00
58 #define EM_MSG_LED_VALUE 0xffff0000
59 #define EM_MSG_LED_VALUE_ACTIVITY 0x00070000
60 #define EM_MSG_LED_VALUE_OFF 0xfff80000
61 #define EM_MSG_LED_VALUE_ON 0x00010000
63 static int ahci_skip_host_reset;
64 static int ahci_ignore_sss;
66 module_param_named(skip_host_reset, ahci_skip_host_reset, int, 0444);
67 MODULE_PARM_DESC(skip_host_reset, "skip global host reset (0=don't skip, 1=skip)");
69 module_param_named(ignore_sss, ahci_ignore_sss, int, 0444);
70 MODULE_PARM_DESC(ignore_sss, "Ignore staggered spinup flag (0=don't ignore, 1=ignore)");
72 static int ahci_enable_alpm(struct ata_port *ap,
74 static void ahci_disable_alpm(struct ata_port *ap);
75 static ssize_t ahci_led_show(struct ata_port *ap, char *buf);
76 static ssize_t ahci_led_store(struct ata_port *ap, const char *buf,
78 static ssize_t ahci_transmit_led_message(struct ata_port *ap, u32 state,
84 AHCI_MAX_SG = 168, /* hardware max is 64K */
85 AHCI_DMA_BOUNDARY = 0xffffffff,
88 AHCI_CMD_SLOT_SZ = AHCI_MAX_CMDS * AHCI_CMD_SZ,
90 AHCI_CMD_TBL_CDB = 0x40,
91 AHCI_CMD_TBL_HDR_SZ = 0x80,
92 AHCI_CMD_TBL_SZ = AHCI_CMD_TBL_HDR_SZ + (AHCI_MAX_SG * 16),
93 AHCI_CMD_TBL_AR_SZ = AHCI_CMD_TBL_SZ * AHCI_MAX_CMDS,
94 AHCI_PORT_PRIV_DMA_SZ = AHCI_CMD_SLOT_SZ + AHCI_CMD_TBL_AR_SZ +
96 AHCI_IRQ_ON_SG = (1 << 31),
97 AHCI_CMD_ATAPI = (1 << 5),
98 AHCI_CMD_WRITE = (1 << 6),
99 AHCI_CMD_PREFETCH = (1 << 7),
100 AHCI_CMD_RESET = (1 << 8),
101 AHCI_CMD_CLR_BUSY = (1 << 10),
103 RX_FIS_D2H_REG = 0x40, /* offset of D2H Register FIS data */
104 RX_FIS_SDB = 0x58, /* offset of SDB FIS data */
105 RX_FIS_UNK = 0x60, /* offset of Unknown FIS data */
108 board_ahci_vt8251 = 1,
109 board_ahci_ign_iferr = 2,
110 board_ahci_sb600 = 3,
112 board_ahci_sb700 = 5, /* for SB700 and SB800 */
113 board_ahci_mcp65 = 6,
114 board_ahci_nopmp = 7,
115 board_ahci_yesncq = 8,
117 /* global controller registers */
118 HOST_CAP = 0x00, /* host capabilities */
119 HOST_CTL = 0x04, /* global host control */
120 HOST_IRQ_STAT = 0x08, /* interrupt status */
121 HOST_PORTS_IMPL = 0x0c, /* bitmap of implemented ports */
122 HOST_VERSION = 0x10, /* AHCI spec. version compliancy */
123 HOST_EM_LOC = 0x1c, /* Enclosure Management location */
124 HOST_EM_CTL = 0x20, /* Enclosure Management Control */
127 HOST_RESET = (1 << 0), /* reset controller; self-clear */
128 HOST_IRQ_EN = (1 << 1), /* global IRQ enable */
129 HOST_AHCI_EN = (1 << 31), /* AHCI enabled */
132 HOST_CAP_EMS = (1 << 6), /* Enclosure Management support */
133 HOST_CAP_SSC = (1 << 14), /* Slumber capable */
134 HOST_CAP_PMP = (1 << 17), /* Port Multiplier support */
135 HOST_CAP_CLO = (1 << 24), /* Command List Override support */
136 HOST_CAP_ALPM = (1 << 26), /* Aggressive Link PM support */
137 HOST_CAP_SSS = (1 << 27), /* Staggered Spin-up */
138 HOST_CAP_SNTF = (1 << 29), /* SNotification register */
139 HOST_CAP_NCQ = (1 << 30), /* Native Command Queueing */
140 HOST_CAP_64 = (1 << 31), /* PCI DAC (64-bit DMA) support */
142 /* registers for each SATA port */
143 PORT_LST_ADDR = 0x00, /* command list DMA addr */
144 PORT_LST_ADDR_HI = 0x04, /* command list DMA addr hi */
145 PORT_FIS_ADDR = 0x08, /* FIS rx buf addr */
146 PORT_FIS_ADDR_HI = 0x0c, /* FIS rx buf addr hi */
147 PORT_IRQ_STAT = 0x10, /* interrupt status */
148 PORT_IRQ_MASK = 0x14, /* interrupt enable/disable mask */
149 PORT_CMD = 0x18, /* port command */
150 PORT_TFDATA = 0x20, /* taskfile data */
151 PORT_SIG = 0x24, /* device TF signature */
152 PORT_CMD_ISSUE = 0x38, /* command issue */
153 PORT_SCR_STAT = 0x28, /* SATA phy register: SStatus */
154 PORT_SCR_CTL = 0x2c, /* SATA phy register: SControl */
155 PORT_SCR_ERR = 0x30, /* SATA phy register: SError */
156 PORT_SCR_ACT = 0x34, /* SATA phy register: SActive */
157 PORT_SCR_NTF = 0x3c, /* SATA phy register: SNotification */
159 /* PORT_IRQ_{STAT,MASK} bits */
160 PORT_IRQ_COLD_PRES = (1 << 31), /* cold presence detect */
161 PORT_IRQ_TF_ERR = (1 << 30), /* task file error */
162 PORT_IRQ_HBUS_ERR = (1 << 29), /* host bus fatal error */
163 PORT_IRQ_HBUS_DATA_ERR = (1 << 28), /* host bus data error */
164 PORT_IRQ_IF_ERR = (1 << 27), /* interface fatal error */
165 PORT_IRQ_IF_NONFATAL = (1 << 26), /* interface non-fatal error */
166 PORT_IRQ_OVERFLOW = (1 << 24), /* xfer exhausted available S/G */
167 PORT_IRQ_BAD_PMP = (1 << 23), /* incorrect port multiplier */
169 PORT_IRQ_PHYRDY = (1 << 22), /* PhyRdy changed */
170 PORT_IRQ_DEV_ILCK = (1 << 7), /* device interlock */
171 PORT_IRQ_CONNECT = (1 << 6), /* port connect change status */
172 PORT_IRQ_SG_DONE = (1 << 5), /* descriptor processed */
173 PORT_IRQ_UNK_FIS = (1 << 4), /* unknown FIS rx'd */
174 PORT_IRQ_SDB_FIS = (1 << 3), /* Set Device Bits FIS rx'd */
175 PORT_IRQ_DMAS_FIS = (1 << 2), /* DMA Setup FIS rx'd */
176 PORT_IRQ_PIOS_FIS = (1 << 1), /* PIO Setup FIS rx'd */
177 PORT_IRQ_D2H_REG_FIS = (1 << 0), /* D2H Register FIS rx'd */
179 PORT_IRQ_FREEZE = PORT_IRQ_HBUS_ERR |
185 PORT_IRQ_ERROR = PORT_IRQ_FREEZE |
187 PORT_IRQ_HBUS_DATA_ERR,
188 DEF_PORT_IRQ = PORT_IRQ_ERROR | PORT_IRQ_SG_DONE |
189 PORT_IRQ_SDB_FIS | PORT_IRQ_DMAS_FIS |
190 PORT_IRQ_PIOS_FIS | PORT_IRQ_D2H_REG_FIS,
193 PORT_CMD_ASP = (1 << 27), /* Aggressive Slumber/Partial */
194 PORT_CMD_ALPE = (1 << 26), /* Aggressive Link PM enable */
195 PORT_CMD_ATAPI = (1 << 24), /* Device is ATAPI */
196 PORT_CMD_PMP = (1 << 17), /* PMP attached */
197 PORT_CMD_LIST_ON = (1 << 15), /* cmd list DMA engine running */
198 PORT_CMD_FIS_ON = (1 << 14), /* FIS DMA engine running */
199 PORT_CMD_FIS_RX = (1 << 4), /* Enable FIS receive DMA engine */
200 PORT_CMD_CLO = (1 << 3), /* Command list override */
201 PORT_CMD_POWER_ON = (1 << 2), /* Power up device */
202 PORT_CMD_SPIN_UP = (1 << 1), /* Spin up device */
203 PORT_CMD_START = (1 << 0), /* Enable port DMA engine */
205 PORT_CMD_ICC_MASK = (0xf << 28), /* i/f ICC state mask */
206 PORT_CMD_ICC_ACTIVE = (0x1 << 28), /* Put i/f in active state */
207 PORT_CMD_ICC_PARTIAL = (0x2 << 28), /* Put i/f in partial state */
208 PORT_CMD_ICC_SLUMBER = (0x6 << 28), /* Put i/f in slumber state */
210 /* hpriv->flags bits */
211 AHCI_HFLAG_NO_NCQ = (1 << 0),
212 AHCI_HFLAG_IGN_IRQ_IF_ERR = (1 << 1), /* ignore IRQ_IF_ERR */
213 AHCI_HFLAG_IGN_SERR_INTERNAL = (1 << 2), /* ignore SERR_INTERNAL */
214 AHCI_HFLAG_32BIT_ONLY = (1 << 3), /* force 32bit */
215 AHCI_HFLAG_MV_PATA = (1 << 4), /* PATA port */
216 AHCI_HFLAG_NO_MSI = (1 << 5), /* no PCI MSI */
217 AHCI_HFLAG_NO_PMP = (1 << 6), /* no PMP */
218 AHCI_HFLAG_NO_HOTPLUG = (1 << 7), /* ignore PxSERR.DIAG.N */
219 AHCI_HFLAG_SECT255 = (1 << 8), /* max 255 sectors */
220 AHCI_HFLAG_YES_NCQ = (1 << 9), /* force NCQ cap on */
221 AHCI_HFLAG_NO_SUSPEND = (1 << 10), /* don't suspend */
222 AHCI_HFLAG_SRST_TOUT_IS_OFFLINE = (1 << 11), /* treat SRST timeout as
227 AHCI_FLAG_COMMON = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
228 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA |
229 ATA_FLAG_ACPI_SATA | ATA_FLAG_AN |
232 ICH_MAP = 0x90, /* ICH MAP register */
239 EM_CTL_RST = (1 << 9), /* Reset */
240 EM_CTL_TM = (1 << 8), /* Transmit Message */
241 EM_CTL_ALHD = (1 << 26), /* Activity LED */
244 struct ahci_cmd_hdr {
259 struct ahci_em_priv {
260 enum sw_activity blink_policy;
261 struct timer_list timer;
262 unsigned long saved_activity;
263 unsigned long activity;
264 unsigned long led_state;
267 struct ahci_host_priv {
268 unsigned int flags; /* AHCI_HFLAG_* */
269 u32 cap; /* cap to use */
270 u32 port_map; /* port map to use */
271 u32 saved_cap; /* saved initial cap */
272 u32 saved_port_map; /* saved initial port_map */
273 u32 em_loc; /* enclosure management location */
276 struct ahci_port_priv {
277 struct ata_link *active_link;
278 struct ahci_cmd_hdr *cmd_slot;
279 dma_addr_t cmd_slot_dma;
281 dma_addr_t cmd_tbl_dma;
283 dma_addr_t rx_fis_dma;
284 /* for NCQ spurious interrupt analysis */
285 unsigned int ncq_saw_d2h:1;
286 unsigned int ncq_saw_dmas:1;
287 unsigned int ncq_saw_sdb:1;
288 u32 intr_mask; /* interrupts to enable */
289 /* enclosure management info per PM slot */
290 struct ahci_em_priv em_priv[EM_MAX_SLOTS];
293 static int ahci_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
294 static int ahci_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
295 static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
296 static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc);
297 static bool ahci_qc_fill_rtf(struct ata_queued_cmd *qc);
298 static int ahci_port_start(struct ata_port *ap);
299 static void ahci_port_stop(struct ata_port *ap);
300 static void ahci_qc_prep(struct ata_queued_cmd *qc);
301 static void ahci_freeze(struct ata_port *ap);
302 static void ahci_thaw(struct ata_port *ap);
303 static void ahci_pmp_attach(struct ata_port *ap);
304 static void ahci_pmp_detach(struct ata_port *ap);
305 static int ahci_softreset(struct ata_link *link, unsigned int *class,
306 unsigned long deadline);
307 static int ahci_sb600_softreset(struct ata_link *link, unsigned int *class,
308 unsigned long deadline);
309 static int ahci_hardreset(struct ata_link *link, unsigned int *class,
310 unsigned long deadline);
311 static int ahci_vt8251_hardreset(struct ata_link *link, unsigned int *class,
312 unsigned long deadline);
313 static int ahci_p5wdh_hardreset(struct ata_link *link, unsigned int *class,
314 unsigned long deadline);
315 static void ahci_postreset(struct ata_link *link, unsigned int *class);
316 static void ahci_error_handler(struct ata_port *ap);
317 static void ahci_post_internal_cmd(struct ata_queued_cmd *qc);
318 static int ahci_port_resume(struct ata_port *ap);
319 static void ahci_dev_config(struct ata_device *dev);
320 static void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag,
323 static int ahci_port_suspend(struct ata_port *ap, pm_message_t mesg);
324 static int ahci_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
325 static int ahci_pci_device_resume(struct pci_dev *pdev);
327 static ssize_t ahci_activity_show(struct ata_device *dev, char *buf);
328 static ssize_t ahci_activity_store(struct ata_device *dev,
329 enum sw_activity val);
330 static void ahci_init_sw_activity(struct ata_link *link);
332 static ssize_t ahci_show_host_caps(struct device *dev,
333 struct device_attribute *attr, char *buf);
334 static ssize_t ahci_show_host_version(struct device *dev,
335 struct device_attribute *attr, char *buf);
336 static ssize_t ahci_show_port_cmd(struct device *dev,
337 struct device_attribute *attr, char *buf);
339 DEVICE_ATTR(ahci_host_caps, S_IRUGO, ahci_show_host_caps, NULL);
340 DEVICE_ATTR(ahci_host_version, S_IRUGO, ahci_show_host_version, NULL);
341 DEVICE_ATTR(ahci_port_cmd, S_IRUGO, ahci_show_port_cmd, NULL);
343 static struct device_attribute *ahci_shost_attrs[] = {
344 &dev_attr_link_power_management_policy,
345 &dev_attr_em_message_type,
346 &dev_attr_em_message,
347 &dev_attr_ahci_host_caps,
348 &dev_attr_ahci_host_version,
349 &dev_attr_ahci_port_cmd,
353 static struct device_attribute *ahci_sdev_attrs[] = {
354 &dev_attr_sw_activity,
355 &dev_attr_unload_heads,
359 static struct scsi_host_template ahci_sht = {
360 ATA_NCQ_SHT(DRV_NAME),
361 .can_queue = AHCI_MAX_CMDS - 1,
362 .sg_tablesize = AHCI_MAX_SG,
363 .dma_boundary = AHCI_DMA_BOUNDARY,
364 .shost_attrs = ahci_shost_attrs,
365 .sdev_attrs = ahci_sdev_attrs,
368 static struct ata_port_operations ahci_ops = {
369 .inherits = &sata_pmp_port_ops,
371 .qc_defer = sata_pmp_qc_defer_cmd_switch,
372 .qc_prep = ahci_qc_prep,
373 .qc_issue = ahci_qc_issue,
374 .qc_fill_rtf = ahci_qc_fill_rtf,
376 .freeze = ahci_freeze,
378 .softreset = ahci_softreset,
379 .hardreset = ahci_hardreset,
380 .postreset = ahci_postreset,
381 .pmp_softreset = ahci_softreset,
382 .error_handler = ahci_error_handler,
383 .post_internal_cmd = ahci_post_internal_cmd,
384 .dev_config = ahci_dev_config,
386 .scr_read = ahci_scr_read,
387 .scr_write = ahci_scr_write,
388 .pmp_attach = ahci_pmp_attach,
389 .pmp_detach = ahci_pmp_detach,
391 .enable_pm = ahci_enable_alpm,
392 .disable_pm = ahci_disable_alpm,
393 .em_show = ahci_led_show,
394 .em_store = ahci_led_store,
395 .sw_activity_show = ahci_activity_show,
396 .sw_activity_store = ahci_activity_store,
398 .port_suspend = ahci_port_suspend,
399 .port_resume = ahci_port_resume,
401 .port_start = ahci_port_start,
402 .port_stop = ahci_port_stop,
405 static struct ata_port_operations ahci_vt8251_ops = {
406 .inherits = &ahci_ops,
407 .hardreset = ahci_vt8251_hardreset,
410 static struct ata_port_operations ahci_p5wdh_ops = {
411 .inherits = &ahci_ops,
412 .hardreset = ahci_p5wdh_hardreset,
415 static struct ata_port_operations ahci_sb600_ops = {
416 .inherits = &ahci_ops,
417 .softreset = ahci_sb600_softreset,
418 .pmp_softreset = ahci_sb600_softreset,
421 #define AHCI_HFLAGS(flags) .private_data = (void *)(flags)
423 static const struct ata_port_info ahci_port_info[] = {
426 .flags = AHCI_FLAG_COMMON,
427 .pio_mask = ATA_PIO4,
428 .udma_mask = ATA_UDMA6,
429 .port_ops = &ahci_ops,
431 [board_ahci_vt8251] =
433 AHCI_HFLAGS (AHCI_HFLAG_NO_NCQ | AHCI_HFLAG_NO_PMP),
434 .flags = AHCI_FLAG_COMMON,
435 .pio_mask = ATA_PIO4,
436 .udma_mask = ATA_UDMA6,
437 .port_ops = &ahci_vt8251_ops,
439 [board_ahci_ign_iferr] =
441 AHCI_HFLAGS (AHCI_HFLAG_IGN_IRQ_IF_ERR),
442 .flags = AHCI_FLAG_COMMON,
443 .pio_mask = ATA_PIO4,
444 .udma_mask = ATA_UDMA6,
445 .port_ops = &ahci_ops,
449 AHCI_HFLAGS (AHCI_HFLAG_IGN_SERR_INTERNAL |
450 AHCI_HFLAG_NO_MSI | AHCI_HFLAG_SECT255),
451 .flags = AHCI_FLAG_COMMON,
452 .pio_mask = ATA_PIO4,
453 .udma_mask = ATA_UDMA6,
454 .port_ops = &ahci_sb600_ops,
458 AHCI_HFLAGS (AHCI_HFLAG_NO_NCQ | AHCI_HFLAG_NO_MSI |
459 AHCI_HFLAG_MV_PATA | AHCI_HFLAG_NO_PMP),
460 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
461 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
462 .pio_mask = ATA_PIO4,
463 .udma_mask = ATA_UDMA6,
464 .port_ops = &ahci_ops,
466 [board_ahci_sb700] = /* for SB700 and SB800 */
468 AHCI_HFLAGS (AHCI_HFLAG_IGN_SERR_INTERNAL),
469 .flags = AHCI_FLAG_COMMON,
470 .pio_mask = ATA_PIO4,
471 .udma_mask = ATA_UDMA6,
472 .port_ops = &ahci_sb600_ops,
476 AHCI_HFLAGS (AHCI_HFLAG_YES_NCQ),
477 .flags = AHCI_FLAG_COMMON,
478 .pio_mask = ATA_PIO4,
479 .udma_mask = ATA_UDMA6,
480 .port_ops = &ahci_ops,
484 AHCI_HFLAGS (AHCI_HFLAG_NO_PMP),
485 .flags = AHCI_FLAG_COMMON,
486 .pio_mask = ATA_PIO4,
487 .udma_mask = ATA_UDMA6,
488 .port_ops = &ahci_ops,
490 /* board_ahci_yesncq */
492 AHCI_HFLAGS (AHCI_HFLAG_YES_NCQ),
493 .flags = AHCI_FLAG_COMMON,
494 .pio_mask = ATA_PIO4,
495 .udma_mask = ATA_UDMA6,
496 .port_ops = &ahci_ops,
500 static const struct pci_device_id ahci_pci_tbl[] = {
502 { PCI_VDEVICE(INTEL, 0x2652), board_ahci }, /* ICH6 */
503 { PCI_VDEVICE(INTEL, 0x2653), board_ahci }, /* ICH6M */
504 { PCI_VDEVICE(INTEL, 0x27c1), board_ahci }, /* ICH7 */
505 { PCI_VDEVICE(INTEL, 0x27c5), board_ahci }, /* ICH7M */
506 { PCI_VDEVICE(INTEL, 0x27c3), board_ahci }, /* ICH7R */
507 { PCI_VDEVICE(AL, 0x5288), board_ahci_ign_iferr }, /* ULi M5288 */
508 { PCI_VDEVICE(INTEL, 0x2681), board_ahci }, /* ESB2 */
509 { PCI_VDEVICE(INTEL, 0x2682), board_ahci }, /* ESB2 */
510 { PCI_VDEVICE(INTEL, 0x2683), board_ahci }, /* ESB2 */
511 { PCI_VDEVICE(INTEL, 0x27c6), board_ahci }, /* ICH7-M DH */
512 { PCI_VDEVICE(INTEL, 0x2821), board_ahci }, /* ICH8 */
513 { PCI_VDEVICE(INTEL, 0x2822), board_ahci }, /* ICH8 */
514 { PCI_VDEVICE(INTEL, 0x2824), board_ahci }, /* ICH8 */
515 { PCI_VDEVICE(INTEL, 0x2829), board_ahci }, /* ICH8M */
516 { PCI_VDEVICE(INTEL, 0x282a), board_ahci }, /* ICH8M */
517 { PCI_VDEVICE(INTEL, 0x2922), board_ahci }, /* ICH9 */
518 { PCI_VDEVICE(INTEL, 0x2923), board_ahci }, /* ICH9 */
519 { PCI_VDEVICE(INTEL, 0x2924), board_ahci }, /* ICH9 */
520 { PCI_VDEVICE(INTEL, 0x2925), board_ahci }, /* ICH9 */
521 { PCI_VDEVICE(INTEL, 0x2927), board_ahci }, /* ICH9 */
522 { PCI_VDEVICE(INTEL, 0x2929), board_ahci }, /* ICH9M */
523 { PCI_VDEVICE(INTEL, 0x292a), board_ahci }, /* ICH9M */
524 { PCI_VDEVICE(INTEL, 0x292b), board_ahci }, /* ICH9M */
525 { PCI_VDEVICE(INTEL, 0x292c), board_ahci }, /* ICH9M */
526 { PCI_VDEVICE(INTEL, 0x292f), board_ahci }, /* ICH9M */
527 { PCI_VDEVICE(INTEL, 0x294d), board_ahci }, /* ICH9 */
528 { PCI_VDEVICE(INTEL, 0x294e), board_ahci }, /* ICH9M */
529 { PCI_VDEVICE(INTEL, 0x502a), board_ahci }, /* Tolapai */
530 { PCI_VDEVICE(INTEL, 0x502b), board_ahci }, /* Tolapai */
531 { PCI_VDEVICE(INTEL, 0x3a05), board_ahci }, /* ICH10 */
532 { PCI_VDEVICE(INTEL, 0x3a22), board_ahci }, /* ICH10 */
533 { PCI_VDEVICE(INTEL, 0x3a25), board_ahci }, /* ICH10 */
534 { PCI_VDEVICE(INTEL, 0x3b22), board_ahci }, /* PCH AHCI */
535 { PCI_VDEVICE(INTEL, 0x3b23), board_ahci }, /* PCH AHCI */
536 { PCI_VDEVICE(INTEL, 0x3b24), board_ahci }, /* PCH RAID */
537 { PCI_VDEVICE(INTEL, 0x3b25), board_ahci }, /* PCH RAID */
538 { PCI_VDEVICE(INTEL, 0x3b29), board_ahci }, /* PCH AHCI */
539 { PCI_VDEVICE(INTEL, 0x3b2b), board_ahci }, /* PCH RAID */
540 { PCI_VDEVICE(INTEL, 0x3b2c), board_ahci }, /* PCH RAID */
541 { PCI_VDEVICE(INTEL, 0x3b2f), board_ahci }, /* PCH AHCI */
543 /* JMicron 360/1/3/5/6, match class to avoid IDE function */
544 { PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
545 PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci_ign_iferr },
548 { PCI_VDEVICE(ATI, 0x4380), board_ahci_sb600 }, /* ATI SB600 */
549 { PCI_VDEVICE(ATI, 0x4390), board_ahci_sb700 }, /* ATI SB700/800 */
550 { PCI_VDEVICE(ATI, 0x4391), board_ahci_sb700 }, /* ATI SB700/800 */
551 { PCI_VDEVICE(ATI, 0x4392), board_ahci_sb700 }, /* ATI SB700/800 */
552 { PCI_VDEVICE(ATI, 0x4393), board_ahci_sb700 }, /* ATI SB700/800 */
553 { PCI_VDEVICE(ATI, 0x4394), board_ahci_sb700 }, /* ATI SB700/800 */
554 { PCI_VDEVICE(ATI, 0x4395), board_ahci_sb700 }, /* ATI SB700/800 */
557 { PCI_VDEVICE(VIA, 0x3349), board_ahci_vt8251 }, /* VIA VT8251 */
558 { PCI_VDEVICE(VIA, 0x6287), board_ahci_vt8251 }, /* VIA VT8251 */
561 { PCI_VDEVICE(NVIDIA, 0x044c), board_ahci_mcp65 }, /* MCP65 */
562 { PCI_VDEVICE(NVIDIA, 0x044d), board_ahci_mcp65 }, /* MCP65 */
563 { PCI_VDEVICE(NVIDIA, 0x044e), board_ahci_mcp65 }, /* MCP65 */
564 { PCI_VDEVICE(NVIDIA, 0x044f), board_ahci_mcp65 }, /* MCP65 */
565 { PCI_VDEVICE(NVIDIA, 0x045c), board_ahci_mcp65 }, /* MCP65 */
566 { PCI_VDEVICE(NVIDIA, 0x045d), board_ahci_mcp65 }, /* MCP65 */
567 { PCI_VDEVICE(NVIDIA, 0x045e), board_ahci_mcp65 }, /* MCP65 */
568 { PCI_VDEVICE(NVIDIA, 0x045f), board_ahci_mcp65 }, /* MCP65 */
569 { PCI_VDEVICE(NVIDIA, 0x0550), board_ahci_yesncq }, /* MCP67 */
570 { PCI_VDEVICE(NVIDIA, 0x0551), board_ahci_yesncq }, /* MCP67 */
571 { PCI_VDEVICE(NVIDIA, 0x0552), board_ahci_yesncq }, /* MCP67 */
572 { PCI_VDEVICE(NVIDIA, 0x0553), board_ahci_yesncq }, /* MCP67 */
573 { PCI_VDEVICE(NVIDIA, 0x0554), board_ahci_yesncq }, /* MCP67 */
574 { PCI_VDEVICE(NVIDIA, 0x0555), board_ahci_yesncq }, /* MCP67 */
575 { PCI_VDEVICE(NVIDIA, 0x0556), board_ahci_yesncq }, /* MCP67 */
576 { PCI_VDEVICE(NVIDIA, 0x0557), board_ahci_yesncq }, /* MCP67 */
577 { PCI_VDEVICE(NVIDIA, 0x0558), board_ahci_yesncq }, /* MCP67 */
578 { PCI_VDEVICE(NVIDIA, 0x0559), board_ahci_yesncq }, /* MCP67 */
579 { PCI_VDEVICE(NVIDIA, 0x055a), board_ahci_yesncq }, /* MCP67 */
580 { PCI_VDEVICE(NVIDIA, 0x055b), board_ahci_yesncq }, /* MCP67 */
581 { PCI_VDEVICE(NVIDIA, 0x07f0), board_ahci_yesncq }, /* MCP73 */
582 { PCI_VDEVICE(NVIDIA, 0x07f1), board_ahci_yesncq }, /* MCP73 */
583 { PCI_VDEVICE(NVIDIA, 0x07f2), board_ahci_yesncq }, /* MCP73 */
584 { PCI_VDEVICE(NVIDIA, 0x07f3), board_ahci_yesncq }, /* MCP73 */
585 { PCI_VDEVICE(NVIDIA, 0x07f4), board_ahci_yesncq }, /* MCP73 */
586 { PCI_VDEVICE(NVIDIA, 0x07f5), board_ahci_yesncq }, /* MCP73 */
587 { PCI_VDEVICE(NVIDIA, 0x07f6), board_ahci_yesncq }, /* MCP73 */
588 { PCI_VDEVICE(NVIDIA, 0x07f7), board_ahci_yesncq }, /* MCP73 */
589 { PCI_VDEVICE(NVIDIA, 0x07f8), board_ahci_yesncq }, /* MCP73 */
590 { PCI_VDEVICE(NVIDIA, 0x07f9), board_ahci_yesncq }, /* MCP73 */
591 { PCI_VDEVICE(NVIDIA, 0x07fa), board_ahci_yesncq }, /* MCP73 */
592 { PCI_VDEVICE(NVIDIA, 0x07fb), board_ahci_yesncq }, /* MCP73 */
593 { PCI_VDEVICE(NVIDIA, 0x0ad0), board_ahci }, /* MCP77 */
594 { PCI_VDEVICE(NVIDIA, 0x0ad1), board_ahci }, /* MCP77 */
595 { PCI_VDEVICE(NVIDIA, 0x0ad2), board_ahci }, /* MCP77 */
596 { PCI_VDEVICE(NVIDIA, 0x0ad3), board_ahci }, /* MCP77 */
597 { PCI_VDEVICE(NVIDIA, 0x0ad4), board_ahci }, /* MCP77 */
598 { PCI_VDEVICE(NVIDIA, 0x0ad5), board_ahci }, /* MCP77 */
599 { PCI_VDEVICE(NVIDIA, 0x0ad6), board_ahci }, /* MCP77 */
600 { PCI_VDEVICE(NVIDIA, 0x0ad7), board_ahci }, /* MCP77 */
601 { PCI_VDEVICE(NVIDIA, 0x0ad8), board_ahci }, /* MCP77 */
602 { PCI_VDEVICE(NVIDIA, 0x0ad9), board_ahci }, /* MCP77 */
603 { PCI_VDEVICE(NVIDIA, 0x0ada), board_ahci }, /* MCP77 */
604 { PCI_VDEVICE(NVIDIA, 0x0adb), board_ahci }, /* MCP77 */
605 { PCI_VDEVICE(NVIDIA, 0x0ab4), board_ahci }, /* MCP79 */
606 { PCI_VDEVICE(NVIDIA, 0x0ab5), board_ahci }, /* MCP79 */
607 { PCI_VDEVICE(NVIDIA, 0x0ab6), board_ahci }, /* MCP79 */
608 { PCI_VDEVICE(NVIDIA, 0x0ab7), board_ahci }, /* MCP79 */
609 { PCI_VDEVICE(NVIDIA, 0x0ab8), board_ahci }, /* MCP79 */
610 { PCI_VDEVICE(NVIDIA, 0x0ab9), board_ahci }, /* MCP79 */
611 { PCI_VDEVICE(NVIDIA, 0x0aba), board_ahci }, /* MCP79 */
612 { PCI_VDEVICE(NVIDIA, 0x0abb), board_ahci }, /* MCP79 */
613 { PCI_VDEVICE(NVIDIA, 0x0abc), board_ahci }, /* MCP79 */
614 { PCI_VDEVICE(NVIDIA, 0x0abd), board_ahci }, /* MCP79 */
615 { PCI_VDEVICE(NVIDIA, 0x0abe), board_ahci }, /* MCP79 */
616 { PCI_VDEVICE(NVIDIA, 0x0abf), board_ahci }, /* MCP79 */
617 { PCI_VDEVICE(NVIDIA, 0x0d84), board_ahci }, /* MCP89 */
618 { PCI_VDEVICE(NVIDIA, 0x0d85), board_ahci }, /* MCP89 */
619 { PCI_VDEVICE(NVIDIA, 0x0d86), board_ahci }, /* MCP89 */
620 { PCI_VDEVICE(NVIDIA, 0x0d87), board_ahci }, /* MCP89 */
621 { PCI_VDEVICE(NVIDIA, 0x0d88), board_ahci }, /* MCP89 */
622 { PCI_VDEVICE(NVIDIA, 0x0d89), board_ahci }, /* MCP89 */
623 { PCI_VDEVICE(NVIDIA, 0x0d8a), board_ahci }, /* MCP89 */
624 { PCI_VDEVICE(NVIDIA, 0x0d8b), board_ahci }, /* MCP89 */
625 { PCI_VDEVICE(NVIDIA, 0x0d8c), board_ahci }, /* MCP89 */
626 { PCI_VDEVICE(NVIDIA, 0x0d8d), board_ahci }, /* MCP89 */
627 { PCI_VDEVICE(NVIDIA, 0x0d8e), board_ahci }, /* MCP89 */
628 { PCI_VDEVICE(NVIDIA, 0x0d8f), board_ahci }, /* MCP89 */
631 { PCI_VDEVICE(SI, 0x1184), board_ahci }, /* SiS 966 */
632 { PCI_VDEVICE(SI, 0x1185), board_ahci }, /* SiS 968 */
633 { PCI_VDEVICE(SI, 0x0186), board_ahci }, /* SiS 968 */
636 { PCI_VDEVICE(MARVELL, 0x6145), board_ahci_mv }, /* 6145 */
637 { PCI_VDEVICE(MARVELL, 0x6121), board_ahci_mv }, /* 6121 */
640 { PCI_VDEVICE(PROMISE, 0x3f20), board_ahci }, /* PDC42819 */
642 /* Generic, PCI class code for AHCI */
643 { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
644 PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci },
646 { } /* terminate list */
650 static struct pci_driver ahci_pci_driver = {
652 .id_table = ahci_pci_tbl,
653 .probe = ahci_init_one,
654 .remove = ata_pci_remove_one,
656 .suspend = ahci_pci_device_suspend,
657 .resume = ahci_pci_device_resume,
661 static int ahci_em_messages = 1;
662 module_param(ahci_em_messages, int, 0444);
663 /* add other LED protocol types when they become supported */
664 MODULE_PARM_DESC(ahci_em_messages,
665 "Set AHCI Enclosure Management Message type (0 = disabled, 1 = LED");
667 #if defined(CONFIG_PATA_MARVELL) || defined(CONFIG_PATA_MARVELL_MODULE)
668 static int marvell_enable;
670 static int marvell_enable = 1;
672 module_param(marvell_enable, int, 0644);
673 MODULE_PARM_DESC(marvell_enable, "Marvell SATA via AHCI (1 = enabled)");
676 static inline int ahci_nr_ports(u32 cap)
678 return (cap & 0x1f) + 1;
681 static inline void __iomem *__ahci_port_base(struct ata_host *host,
682 unsigned int port_no)
684 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
686 return mmio + 0x100 + (port_no * 0x80);
689 static inline void __iomem *ahci_port_base(struct ata_port *ap)
691 return __ahci_port_base(ap->host, ap->port_no);
694 static void ahci_enable_ahci(void __iomem *mmio)
699 /* turn on AHCI_EN */
700 tmp = readl(mmio + HOST_CTL);
701 if (tmp & HOST_AHCI_EN)
704 /* Some controllers need AHCI_EN to be written multiple times.
705 * Try a few times before giving up.
707 for (i = 0; i < 5; i++) {
709 writel(tmp, mmio + HOST_CTL);
710 tmp = readl(mmio + HOST_CTL); /* flush && sanity check */
711 if (tmp & HOST_AHCI_EN)
719 static ssize_t ahci_show_host_caps(struct device *dev,
720 struct device_attribute *attr, char *buf)
722 struct Scsi_Host *shost = class_to_shost(dev);
723 struct ata_port *ap = ata_shost_to_port(shost);
724 struct ahci_host_priv *hpriv = ap->host->private_data;
726 return sprintf(buf, "%x\n", hpriv->cap);
729 static ssize_t ahci_show_host_version(struct device *dev,
730 struct device_attribute *attr, char *buf)
732 struct Scsi_Host *shost = class_to_shost(dev);
733 struct ata_port *ap = ata_shost_to_port(shost);
734 void __iomem *mmio = ap->host->iomap[AHCI_PCI_BAR];
736 return sprintf(buf, "%x\n", readl(mmio + HOST_VERSION));
739 static ssize_t ahci_show_port_cmd(struct device *dev,
740 struct device_attribute *attr, char *buf)
742 struct Scsi_Host *shost = class_to_shost(dev);
743 struct ata_port *ap = ata_shost_to_port(shost);
744 void __iomem *port_mmio = ahci_port_base(ap);
746 return sprintf(buf, "%x\n", readl(port_mmio + PORT_CMD));
750 * ahci_save_initial_config - Save and fixup initial config values
751 * @pdev: target PCI device
752 * @hpriv: host private area to store config values
754 * Some registers containing configuration info might be setup by
755 * BIOS and might be cleared on reset. This function saves the
756 * initial values of those registers into @hpriv such that they
757 * can be restored after controller reset.
759 * If inconsistent, config values are fixed up by this function.
764 static void ahci_save_initial_config(struct pci_dev *pdev,
765 struct ahci_host_priv *hpriv)
767 void __iomem *mmio = pcim_iomap_table(pdev)[AHCI_PCI_BAR];
772 /* make sure AHCI mode is enabled before accessing CAP */
773 ahci_enable_ahci(mmio);
775 /* Values prefixed with saved_ are written back to host after
776 * reset. Values without are used for driver operation.
778 hpriv->saved_cap = cap = readl(mmio + HOST_CAP);
779 hpriv->saved_port_map = port_map = readl(mmio + HOST_PORTS_IMPL);
781 /* some chips have errata preventing 64bit use */
782 if ((cap & HOST_CAP_64) && (hpriv->flags & AHCI_HFLAG_32BIT_ONLY)) {
783 dev_printk(KERN_INFO, &pdev->dev,
784 "controller can't do 64bit DMA, forcing 32bit\n");
788 if ((cap & HOST_CAP_NCQ) && (hpriv->flags & AHCI_HFLAG_NO_NCQ)) {
789 dev_printk(KERN_INFO, &pdev->dev,
790 "controller can't do NCQ, turning off CAP_NCQ\n");
791 cap &= ~HOST_CAP_NCQ;
794 if (!(cap & HOST_CAP_NCQ) && (hpriv->flags & AHCI_HFLAG_YES_NCQ)) {
795 dev_printk(KERN_INFO, &pdev->dev,
796 "controller can do NCQ, turning on CAP_NCQ\n");
800 if ((cap & HOST_CAP_PMP) && (hpriv->flags & AHCI_HFLAG_NO_PMP)) {
801 dev_printk(KERN_INFO, &pdev->dev,
802 "controller can't do PMP, turning off CAP_PMP\n");
803 cap &= ~HOST_CAP_PMP;
806 if (pdev->vendor == PCI_VENDOR_ID_JMICRON && pdev->device == 0x2361 &&
808 dev_printk(KERN_INFO, &pdev->dev,
809 "JMB361 has only one port, port_map 0x%x -> 0x%x\n",
815 * Temporary Marvell 6145 hack: PATA port presence
816 * is asserted through the standard AHCI port
817 * presence register, as bit 4 (counting from 0)
819 if (hpriv->flags & AHCI_HFLAG_MV_PATA) {
820 if (pdev->device == 0x6121)
824 dev_printk(KERN_ERR, &pdev->dev,
825 "MV_AHCI HACK: port_map %x -> %x\n",
828 dev_printk(KERN_ERR, &pdev->dev,
829 "Disabling your PATA port. Use the boot option 'ahci.marvell_enable=0' to avoid this.\n");
834 /* cross check port_map and cap.n_ports */
838 for (i = 0; i < AHCI_MAX_PORTS; i++)
839 if (port_map & (1 << i))
842 /* If PI has more ports than n_ports, whine, clear
843 * port_map and let it be generated from n_ports.
845 if (map_ports > ahci_nr_ports(cap)) {
846 dev_printk(KERN_WARNING, &pdev->dev,
847 "implemented port map (0x%x) contains more "
848 "ports than nr_ports (%u), using nr_ports\n",
849 port_map, ahci_nr_ports(cap));
854 /* fabricate port_map from cap.nr_ports */
856 port_map = (1 << ahci_nr_ports(cap)) - 1;
857 dev_printk(KERN_WARNING, &pdev->dev,
858 "forcing PORTS_IMPL to 0x%x\n", port_map);
860 /* write the fixed up value to the PI register */
861 hpriv->saved_port_map = port_map;
864 /* record values to use during operation */
866 hpriv->port_map = port_map;
870 * ahci_restore_initial_config - Restore initial config
871 * @host: target ATA host
873 * Restore initial config stored by ahci_save_initial_config().
878 static void ahci_restore_initial_config(struct ata_host *host)
880 struct ahci_host_priv *hpriv = host->private_data;
881 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
883 writel(hpriv->saved_cap, mmio + HOST_CAP);
884 writel(hpriv->saved_port_map, mmio + HOST_PORTS_IMPL);
885 (void) readl(mmio + HOST_PORTS_IMPL); /* flush */
888 static unsigned ahci_scr_offset(struct ata_port *ap, unsigned int sc_reg)
890 static const int offset[] = {
891 [SCR_STATUS] = PORT_SCR_STAT,
892 [SCR_CONTROL] = PORT_SCR_CTL,
893 [SCR_ERROR] = PORT_SCR_ERR,
894 [SCR_ACTIVE] = PORT_SCR_ACT,
895 [SCR_NOTIFICATION] = PORT_SCR_NTF,
897 struct ahci_host_priv *hpriv = ap->host->private_data;
899 if (sc_reg < ARRAY_SIZE(offset) &&
900 (sc_reg != SCR_NOTIFICATION || (hpriv->cap & HOST_CAP_SNTF)))
901 return offset[sc_reg];
905 static int ahci_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val)
907 void __iomem *port_mmio = ahci_port_base(link->ap);
908 int offset = ahci_scr_offset(link->ap, sc_reg);
911 *val = readl(port_mmio + offset);
917 static int ahci_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val)
919 void __iomem *port_mmio = ahci_port_base(link->ap);
920 int offset = ahci_scr_offset(link->ap, sc_reg);
923 writel(val, port_mmio + offset);
929 static void ahci_start_engine(struct ata_port *ap)
931 void __iomem *port_mmio = ahci_port_base(ap);
935 tmp = readl(port_mmio + PORT_CMD);
936 tmp |= PORT_CMD_START;
937 writel(tmp, port_mmio + PORT_CMD);
938 readl(port_mmio + PORT_CMD); /* flush */
941 static int ahci_stop_engine(struct ata_port *ap)
943 void __iomem *port_mmio = ahci_port_base(ap);
946 tmp = readl(port_mmio + PORT_CMD);
948 /* check if the HBA is idle */
949 if ((tmp & (PORT_CMD_START | PORT_CMD_LIST_ON)) == 0)
952 /* setting HBA to idle */
953 tmp &= ~PORT_CMD_START;
954 writel(tmp, port_mmio + PORT_CMD);
956 /* wait for engine to stop. This could be as long as 500 msec */
957 tmp = ata_wait_register(port_mmio + PORT_CMD,
958 PORT_CMD_LIST_ON, PORT_CMD_LIST_ON, 1, 500);
959 if (tmp & PORT_CMD_LIST_ON)
965 static void ahci_start_fis_rx(struct ata_port *ap)
967 void __iomem *port_mmio = ahci_port_base(ap);
968 struct ahci_host_priv *hpriv = ap->host->private_data;
969 struct ahci_port_priv *pp = ap->private_data;
972 /* set FIS registers */
973 if (hpriv->cap & HOST_CAP_64)
974 writel((pp->cmd_slot_dma >> 16) >> 16,
975 port_mmio + PORT_LST_ADDR_HI);
976 writel(pp->cmd_slot_dma & 0xffffffff, port_mmio + PORT_LST_ADDR);
978 if (hpriv->cap & HOST_CAP_64)
979 writel((pp->rx_fis_dma >> 16) >> 16,
980 port_mmio + PORT_FIS_ADDR_HI);
981 writel(pp->rx_fis_dma & 0xffffffff, port_mmio + PORT_FIS_ADDR);
983 /* enable FIS reception */
984 tmp = readl(port_mmio + PORT_CMD);
985 tmp |= PORT_CMD_FIS_RX;
986 writel(tmp, port_mmio + PORT_CMD);
989 readl(port_mmio + PORT_CMD);
992 static int ahci_stop_fis_rx(struct ata_port *ap)
994 void __iomem *port_mmio = ahci_port_base(ap);
997 /* disable FIS reception */
998 tmp = readl(port_mmio + PORT_CMD);
999 tmp &= ~PORT_CMD_FIS_RX;
1000 writel(tmp, port_mmio + PORT_CMD);
1002 /* wait for completion, spec says 500ms, give it 1000 */
1003 tmp = ata_wait_register(port_mmio + PORT_CMD, PORT_CMD_FIS_ON,
1004 PORT_CMD_FIS_ON, 10, 1000);
1005 if (tmp & PORT_CMD_FIS_ON)
1011 static void ahci_power_up(struct ata_port *ap)
1013 struct ahci_host_priv *hpriv = ap->host->private_data;
1014 void __iomem *port_mmio = ahci_port_base(ap);
1017 cmd = readl(port_mmio + PORT_CMD) & ~PORT_CMD_ICC_MASK;
1019 /* spin up device */
1020 if (hpriv->cap & HOST_CAP_SSS) {
1021 cmd |= PORT_CMD_SPIN_UP;
1022 writel(cmd, port_mmio + PORT_CMD);
1026 writel(cmd | PORT_CMD_ICC_ACTIVE, port_mmio + PORT_CMD);
1029 static void ahci_disable_alpm(struct ata_port *ap)
1031 struct ahci_host_priv *hpriv = ap->host->private_data;
1032 void __iomem *port_mmio = ahci_port_base(ap);
1034 struct ahci_port_priv *pp = ap->private_data;
1036 /* IPM bits should be disabled by libata-core */
1037 /* get the existing command bits */
1038 cmd = readl(port_mmio + PORT_CMD);
1040 /* disable ALPM and ASP */
1041 cmd &= ~PORT_CMD_ASP;
1042 cmd &= ~PORT_CMD_ALPE;
1044 /* force the interface back to active */
1045 cmd |= PORT_CMD_ICC_ACTIVE;
1047 /* write out new cmd value */
1048 writel(cmd, port_mmio + PORT_CMD);
1049 cmd = readl(port_mmio + PORT_CMD);
1051 /* wait 10ms to be sure we've come out of any low power state */
1054 /* clear out any PhyRdy stuff from interrupt status */
1055 writel(PORT_IRQ_PHYRDY, port_mmio + PORT_IRQ_STAT);
1057 /* go ahead and clean out PhyRdy Change from Serror too */
1058 ahci_scr_write(&ap->link, SCR_ERROR, ((1 << 16) | (1 << 18)));
1061 * Clear flag to indicate that we should ignore all PhyRdy
1064 hpriv->flags &= ~AHCI_HFLAG_NO_HOTPLUG;
1067 * Enable interrupts on Phy Ready.
1069 pp->intr_mask |= PORT_IRQ_PHYRDY;
1070 writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
1073 * don't change the link pm policy - we can be called
1074 * just to turn of link pm temporarily
1078 static int ahci_enable_alpm(struct ata_port *ap,
1079 enum link_pm policy)
1081 struct ahci_host_priv *hpriv = ap->host->private_data;
1082 void __iomem *port_mmio = ahci_port_base(ap);
1084 struct ahci_port_priv *pp = ap->private_data;
1087 /* Make sure the host is capable of link power management */
1088 if (!(hpriv->cap & HOST_CAP_ALPM))
1092 case MAX_PERFORMANCE:
1095 * if we came here with NOT_AVAILABLE,
1096 * it just means this is the first time we
1097 * have tried to enable - default to max performance,
1098 * and let the user go to lower power modes on request.
1100 ahci_disable_alpm(ap);
1103 /* configure HBA to enter SLUMBER */
1107 /* configure HBA to enter PARTIAL */
1115 * Disable interrupts on Phy Ready. This keeps us from
1116 * getting woken up due to spurious phy ready interrupts
1117 * TBD - Hot plug should be done via polling now, is
1118 * that even supported?
1120 pp->intr_mask &= ~PORT_IRQ_PHYRDY;
1121 writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
1124 * Set a flag to indicate that we should ignore all PhyRdy
1125 * state changes since these can happen now whenever we
1128 hpriv->flags |= AHCI_HFLAG_NO_HOTPLUG;
1130 /* get the existing command bits */
1131 cmd = readl(port_mmio + PORT_CMD);
1134 * Set ASP based on Policy
1139 * Setting this bit will instruct the HBA to aggressively
1140 * enter a lower power link state when it's appropriate and
1141 * based on the value set above for ASP
1143 cmd |= PORT_CMD_ALPE;
1145 /* write out new cmd value */
1146 writel(cmd, port_mmio + PORT_CMD);
1147 cmd = readl(port_mmio + PORT_CMD);
1149 /* IPM bits should be set by libata-core */
1154 static void ahci_power_down(struct ata_port *ap)
1156 struct ahci_host_priv *hpriv = ap->host->private_data;
1157 void __iomem *port_mmio = ahci_port_base(ap);
1160 if (!(hpriv->cap & HOST_CAP_SSS))
1163 /* put device into listen mode, first set PxSCTL.DET to 0 */
1164 scontrol = readl(port_mmio + PORT_SCR_CTL);
1166 writel(scontrol, port_mmio + PORT_SCR_CTL);
1168 /* then set PxCMD.SUD to 0 */
1169 cmd = readl(port_mmio + PORT_CMD) & ~PORT_CMD_ICC_MASK;
1170 cmd &= ~PORT_CMD_SPIN_UP;
1171 writel(cmd, port_mmio + PORT_CMD);
1175 static void ahci_start_port(struct ata_port *ap)
1177 struct ahci_port_priv *pp = ap->private_data;
1178 struct ata_link *link;
1179 struct ahci_em_priv *emp;
1183 /* enable FIS reception */
1184 ahci_start_fis_rx(ap);
1187 ahci_start_engine(ap);
1190 if (ap->flags & ATA_FLAG_EM) {
1191 ata_for_each_link(link, ap, EDGE) {
1192 emp = &pp->em_priv[link->pmp];
1194 /* EM Transmit bit maybe busy during init */
1195 for (i = 0; i < EM_MAX_RETRY; i++) {
1196 rc = ahci_transmit_led_message(ap,
1207 if (ap->flags & ATA_FLAG_SW_ACTIVITY)
1208 ata_for_each_link(link, ap, EDGE)
1209 ahci_init_sw_activity(link);
1213 static int ahci_deinit_port(struct ata_port *ap, const char **emsg)
1218 rc = ahci_stop_engine(ap);
1220 *emsg = "failed to stop engine";
1224 /* disable FIS reception */
1225 rc = ahci_stop_fis_rx(ap);
1227 *emsg = "failed stop FIS RX";
1234 static int ahci_reset_controller(struct ata_host *host)
1236 struct pci_dev *pdev = to_pci_dev(host->dev);
1237 struct ahci_host_priv *hpriv = host->private_data;
1238 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
1241 /* we must be in AHCI mode, before using anything
1242 * AHCI-specific, such as HOST_RESET.
1244 ahci_enable_ahci(mmio);
1246 /* global controller reset */
1247 if (!ahci_skip_host_reset) {
1248 tmp = readl(mmio + HOST_CTL);
1249 if ((tmp & HOST_RESET) == 0) {
1250 writel(tmp | HOST_RESET, mmio + HOST_CTL);
1251 readl(mmio + HOST_CTL); /* flush */
1255 * to perform host reset, OS should set HOST_RESET
1256 * and poll until this bit is read to be "0".
1257 * reset must complete within 1 second, or
1258 * the hardware should be considered fried.
1260 tmp = ata_wait_register(mmio + HOST_CTL, HOST_RESET,
1261 HOST_RESET, 10, 1000);
1263 if (tmp & HOST_RESET) {
1264 dev_printk(KERN_ERR, host->dev,
1265 "controller reset failed (0x%x)\n", tmp);
1269 /* turn on AHCI mode */
1270 ahci_enable_ahci(mmio);
1272 /* Some registers might be cleared on reset. Restore
1275 ahci_restore_initial_config(host);
1277 dev_printk(KERN_INFO, host->dev,
1278 "skipping global host reset\n");
1280 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
1284 pci_read_config_word(pdev, 0x92, &tmp16);
1285 if ((tmp16 & hpriv->port_map) != hpriv->port_map) {
1286 tmp16 |= hpriv->port_map;
1287 pci_write_config_word(pdev, 0x92, tmp16);
1294 static void ahci_sw_activity(struct ata_link *link)
1296 struct ata_port *ap = link->ap;
1297 struct ahci_port_priv *pp = ap->private_data;
1298 struct ahci_em_priv *emp = &pp->em_priv[link->pmp];
1300 if (!(link->flags & ATA_LFLAG_SW_ACTIVITY))
1304 if (!timer_pending(&emp->timer))
1305 mod_timer(&emp->timer, jiffies + msecs_to_jiffies(10));
1308 static void ahci_sw_activity_blink(unsigned long arg)
1310 struct ata_link *link = (struct ata_link *)arg;
1311 struct ata_port *ap = link->ap;
1312 struct ahci_port_priv *pp = ap->private_data;
1313 struct ahci_em_priv *emp = &pp->em_priv[link->pmp];
1314 unsigned long led_message = emp->led_state;
1315 u32 activity_led_state;
1316 unsigned long flags;
1318 led_message &= EM_MSG_LED_VALUE;
1319 led_message |= ap->port_no | (link->pmp << 8);
1321 /* check to see if we've had activity. If so,
1322 * toggle state of LED and reset timer. If not,
1323 * turn LED to desired idle state.
1325 spin_lock_irqsave(ap->lock, flags);
1326 if (emp->saved_activity != emp->activity) {
1327 emp->saved_activity = emp->activity;
1328 /* get the current LED state */
1329 activity_led_state = led_message & EM_MSG_LED_VALUE_ON;
1331 if (activity_led_state)
1332 activity_led_state = 0;
1334 activity_led_state = 1;
1336 /* clear old state */
1337 led_message &= ~EM_MSG_LED_VALUE_ACTIVITY;
1340 led_message |= (activity_led_state << 16);
1341 mod_timer(&emp->timer, jiffies + msecs_to_jiffies(100));
1343 /* switch to idle */
1344 led_message &= ~EM_MSG_LED_VALUE_ACTIVITY;
1345 if (emp->blink_policy == BLINK_OFF)
1346 led_message |= (1 << 16);
1348 spin_unlock_irqrestore(ap->lock, flags);
1349 ahci_transmit_led_message(ap, led_message, 4);
1352 static void ahci_init_sw_activity(struct ata_link *link)
1354 struct ata_port *ap = link->ap;
1355 struct ahci_port_priv *pp = ap->private_data;
1356 struct ahci_em_priv *emp = &pp->em_priv[link->pmp];
1358 /* init activity stats, setup timer */
1359 emp->saved_activity = emp->activity = 0;
1360 setup_timer(&emp->timer, ahci_sw_activity_blink, (unsigned long)link);
1362 /* check our blink policy and set flag for link if it's enabled */
1363 if (emp->blink_policy)
1364 link->flags |= ATA_LFLAG_SW_ACTIVITY;
1367 static int ahci_reset_em(struct ata_host *host)
1369 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
1372 em_ctl = readl(mmio + HOST_EM_CTL);
1373 if ((em_ctl & EM_CTL_TM) || (em_ctl & EM_CTL_RST))
1376 writel(em_ctl | EM_CTL_RST, mmio + HOST_EM_CTL);
1380 static ssize_t ahci_transmit_led_message(struct ata_port *ap, u32 state,
1383 struct ahci_host_priv *hpriv = ap->host->private_data;
1384 struct ahci_port_priv *pp = ap->private_data;
1385 void __iomem *mmio = ap->host->iomap[AHCI_PCI_BAR];
1387 u32 message[] = {0, 0};
1388 unsigned long flags;
1390 struct ahci_em_priv *emp;
1392 /* get the slot number from the message */
1393 pmp = (state & EM_MSG_LED_PMP_SLOT) >> 8;
1394 if (pmp < EM_MAX_SLOTS)
1395 emp = &pp->em_priv[pmp];
1399 spin_lock_irqsave(ap->lock, flags);
1402 * if we are still busy transmitting a previous message,
1405 em_ctl = readl(mmio + HOST_EM_CTL);
1406 if (em_ctl & EM_CTL_TM) {
1407 spin_unlock_irqrestore(ap->lock, flags);
1412 * create message header - this is all zero except for
1413 * the message size, which is 4 bytes.
1415 message[0] |= (4 << 8);
1417 /* ignore 0:4 of byte zero, fill in port info yourself */
1418 message[1] = ((state & ~EM_MSG_LED_HBA_PORT) | ap->port_no);
1420 /* write message to EM_LOC */
1421 writel(message[0], mmio + hpriv->em_loc);
1422 writel(message[1], mmio + hpriv->em_loc+4);
1424 /* save off new led state for port/slot */
1425 emp->led_state = state;
1428 * tell hardware to transmit the message
1430 writel(em_ctl | EM_CTL_TM, mmio + HOST_EM_CTL);
1432 spin_unlock_irqrestore(ap->lock, flags);
1436 static ssize_t ahci_led_show(struct ata_port *ap, char *buf)
1438 struct ahci_port_priv *pp = ap->private_data;
1439 struct ata_link *link;
1440 struct ahci_em_priv *emp;
1443 ata_for_each_link(link, ap, EDGE) {
1444 emp = &pp->em_priv[link->pmp];
1445 rc += sprintf(buf, "%lx\n", emp->led_state);
1450 static ssize_t ahci_led_store(struct ata_port *ap, const char *buf,
1455 struct ahci_port_priv *pp = ap->private_data;
1456 struct ahci_em_priv *emp;
1458 state = simple_strtoul(buf, NULL, 0);
1460 /* get the slot number from the message */
1461 pmp = (state & EM_MSG_LED_PMP_SLOT) >> 8;
1462 if (pmp < EM_MAX_SLOTS)
1463 emp = &pp->em_priv[pmp];
1467 /* mask off the activity bits if we are in sw_activity
1468 * mode, user should turn off sw_activity before setting
1469 * activity led through em_message
1471 if (emp->blink_policy)
1472 state &= ~EM_MSG_LED_VALUE_ACTIVITY;
1474 return ahci_transmit_led_message(ap, state, size);
1477 static ssize_t ahci_activity_store(struct ata_device *dev, enum sw_activity val)
1479 struct ata_link *link = dev->link;
1480 struct ata_port *ap = link->ap;
1481 struct ahci_port_priv *pp = ap->private_data;
1482 struct ahci_em_priv *emp = &pp->em_priv[link->pmp];
1483 u32 port_led_state = emp->led_state;
1485 /* save the desired Activity LED behavior */
1488 link->flags &= ~(ATA_LFLAG_SW_ACTIVITY);
1490 /* set the LED to OFF */
1491 port_led_state &= EM_MSG_LED_VALUE_OFF;
1492 port_led_state |= (ap->port_no | (link->pmp << 8));
1493 ahci_transmit_led_message(ap, port_led_state, 4);
1495 link->flags |= ATA_LFLAG_SW_ACTIVITY;
1496 if (val == BLINK_OFF) {
1497 /* set LED to ON for idle */
1498 port_led_state &= EM_MSG_LED_VALUE_OFF;
1499 port_led_state |= (ap->port_no | (link->pmp << 8));
1500 port_led_state |= EM_MSG_LED_VALUE_ON; /* check this */
1501 ahci_transmit_led_message(ap, port_led_state, 4);
1504 emp->blink_policy = val;
1508 static ssize_t ahci_activity_show(struct ata_device *dev, char *buf)
1510 struct ata_link *link = dev->link;
1511 struct ata_port *ap = link->ap;
1512 struct ahci_port_priv *pp = ap->private_data;
1513 struct ahci_em_priv *emp = &pp->em_priv[link->pmp];
1515 /* display the saved value of activity behavior for this
1518 return sprintf(buf, "%d\n", emp->blink_policy);
1521 static void ahci_port_init(struct pci_dev *pdev, struct ata_port *ap,
1522 int port_no, void __iomem *mmio,
1523 void __iomem *port_mmio)
1525 const char *emsg = NULL;
1529 /* make sure port is not active */
1530 rc = ahci_deinit_port(ap, &emsg);
1532 dev_printk(KERN_WARNING, &pdev->dev,
1533 "%s (%d)\n", emsg, rc);
1536 tmp = readl(port_mmio + PORT_SCR_ERR);
1537 VPRINTK("PORT_SCR_ERR 0x%x\n", tmp);
1538 writel(tmp, port_mmio + PORT_SCR_ERR);
1540 /* clear port IRQ */
1541 tmp = readl(port_mmio + PORT_IRQ_STAT);
1542 VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp);
1544 writel(tmp, port_mmio + PORT_IRQ_STAT);
1546 writel(1 << port_no, mmio + HOST_IRQ_STAT);
1549 static void ahci_init_controller(struct ata_host *host)
1551 struct ahci_host_priv *hpriv = host->private_data;
1552 struct pci_dev *pdev = to_pci_dev(host->dev);
1553 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
1555 void __iomem *port_mmio;
1559 if (hpriv->flags & AHCI_HFLAG_MV_PATA) {
1560 if (pdev->device == 0x6121)
1564 port_mmio = __ahci_port_base(host, mv);
1566 writel(0, port_mmio + PORT_IRQ_MASK);
1568 /* clear port IRQ */
1569 tmp = readl(port_mmio + PORT_IRQ_STAT);
1570 VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp);
1572 writel(tmp, port_mmio + PORT_IRQ_STAT);
1575 for (i = 0; i < host->n_ports; i++) {
1576 struct ata_port *ap = host->ports[i];
1578 port_mmio = ahci_port_base(ap);
1579 if (ata_port_is_dummy(ap))
1582 ahci_port_init(pdev, ap, i, mmio, port_mmio);
1585 tmp = readl(mmio + HOST_CTL);
1586 VPRINTK("HOST_CTL 0x%x\n", tmp);
1587 writel(tmp | HOST_IRQ_EN, mmio + HOST_CTL);
1588 tmp = readl(mmio + HOST_CTL);
1589 VPRINTK("HOST_CTL 0x%x\n", tmp);
1592 static void ahci_dev_config(struct ata_device *dev)
1594 struct ahci_host_priv *hpriv = dev->link->ap->host->private_data;
1596 if (hpriv->flags & AHCI_HFLAG_SECT255) {
1597 dev->max_sectors = 255;
1598 ata_dev_printk(dev, KERN_INFO,
1599 "SB600 AHCI: limiting to 255 sectors per cmd\n");
1603 static unsigned int ahci_dev_classify(struct ata_port *ap)
1605 void __iomem *port_mmio = ahci_port_base(ap);
1606 struct ata_taskfile tf;
1609 tmp = readl(port_mmio + PORT_SIG);
1610 tf.lbah = (tmp >> 24) & 0xff;
1611 tf.lbam = (tmp >> 16) & 0xff;
1612 tf.lbal = (tmp >> 8) & 0xff;
1613 tf.nsect = (tmp) & 0xff;
1615 return ata_dev_classify(&tf);
1618 static void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag,
1621 dma_addr_t cmd_tbl_dma;
1623 cmd_tbl_dma = pp->cmd_tbl_dma + tag * AHCI_CMD_TBL_SZ;
1625 pp->cmd_slot[tag].opts = cpu_to_le32(opts);
1626 pp->cmd_slot[tag].status = 0;
1627 pp->cmd_slot[tag].tbl_addr = cpu_to_le32(cmd_tbl_dma & 0xffffffff);
1628 pp->cmd_slot[tag].tbl_addr_hi = cpu_to_le32((cmd_tbl_dma >> 16) >> 16);
1631 static int ahci_kick_engine(struct ata_port *ap, int force_restart)
1633 void __iomem *port_mmio = ahci_port_base(ap);
1634 struct ahci_host_priv *hpriv = ap->host->private_data;
1635 u8 status = readl(port_mmio + PORT_TFDATA) & 0xFF;
1639 /* do we need to kick the port? */
1640 busy = status & (ATA_BUSY | ATA_DRQ);
1641 if (!busy && !force_restart)
1645 rc = ahci_stop_engine(ap);
1649 /* need to do CLO? */
1655 if (!(hpriv->cap & HOST_CAP_CLO)) {
1661 tmp = readl(port_mmio + PORT_CMD);
1662 tmp |= PORT_CMD_CLO;
1663 writel(tmp, port_mmio + PORT_CMD);
1666 tmp = ata_wait_register(port_mmio + PORT_CMD,
1667 PORT_CMD_CLO, PORT_CMD_CLO, 1, 500);
1668 if (tmp & PORT_CMD_CLO)
1671 /* restart engine */
1673 ahci_start_engine(ap);
1677 static int ahci_exec_polled_cmd(struct ata_port *ap, int pmp,
1678 struct ata_taskfile *tf, int is_cmd, u16 flags,
1679 unsigned long timeout_msec)
1681 const u32 cmd_fis_len = 5; /* five dwords */
1682 struct ahci_port_priv *pp = ap->private_data;
1683 void __iomem *port_mmio = ahci_port_base(ap);
1684 u8 *fis = pp->cmd_tbl;
1687 /* prep the command */
1688 ata_tf_to_fis(tf, pmp, is_cmd, fis);
1689 ahci_fill_cmd_slot(pp, 0, cmd_fis_len | flags | (pmp << 12));
1692 writel(1, port_mmio + PORT_CMD_ISSUE);
1695 tmp = ata_wait_register(port_mmio + PORT_CMD_ISSUE, 0x1, 0x1,
1698 ahci_kick_engine(ap, 1);
1702 readl(port_mmio + PORT_CMD_ISSUE); /* flush */
1707 static int ahci_do_softreset(struct ata_link *link, unsigned int *class,
1708 int pmp, unsigned long deadline,
1709 int (*check_ready)(struct ata_link *link))
1711 struct ata_port *ap = link->ap;
1712 struct ahci_host_priv *hpriv = ap->host->private_data;
1713 const char *reason = NULL;
1714 unsigned long now, msecs;
1715 struct ata_taskfile tf;
1720 /* prepare for SRST (AHCI-1.1 10.4.1) */
1721 rc = ahci_kick_engine(ap, 1);
1722 if (rc && rc != -EOPNOTSUPP)
1723 ata_link_printk(link, KERN_WARNING,
1724 "failed to reset engine (errno=%d)\n", rc);
1726 ata_tf_init(link->device, &tf);
1728 /* issue the first D2H Register FIS */
1731 if (time_after(now, deadline))
1732 msecs = jiffies_to_msecs(deadline - now);
1735 if (ahci_exec_polled_cmd(ap, pmp, &tf, 0,
1736 AHCI_CMD_RESET | AHCI_CMD_CLR_BUSY, msecs)) {
1738 reason = "1st FIS failed";
1742 /* spec says at least 5us, but be generous and sleep for 1ms */
1745 /* issue the second D2H Register FIS */
1746 tf.ctl &= ~ATA_SRST;
1747 ahci_exec_polled_cmd(ap, pmp, &tf, 0, 0, 0);
1749 /* wait for link to become ready */
1750 rc = ata_wait_after_reset(link, deadline, check_ready);
1751 if (rc == -EBUSY && hpriv->flags & AHCI_HFLAG_SRST_TOUT_IS_OFFLINE) {
1753 * Workaround for cases where link online status can't
1754 * be trusted. Treat device readiness timeout as link
1757 ata_link_printk(link, KERN_INFO,
1758 "device not ready, treating as offline\n");
1759 *class = ATA_DEV_NONE;
1761 /* link occupied, -ENODEV too is an error */
1762 reason = "device not ready";
1765 *class = ahci_dev_classify(ap);
1767 DPRINTK("EXIT, class=%u\n", *class);
1771 ata_link_printk(link, KERN_ERR, "softreset failed (%s)\n", reason);
1775 static int ahci_check_ready(struct ata_link *link)
1777 void __iomem *port_mmio = ahci_port_base(link->ap);
1778 u8 status = readl(port_mmio + PORT_TFDATA) & 0xFF;
1780 return ata_check_ready(status);
1783 static int ahci_softreset(struct ata_link *link, unsigned int *class,
1784 unsigned long deadline)
1786 int pmp = sata_srst_pmp(link);
1790 return ahci_do_softreset(link, class, pmp, deadline, ahci_check_ready);
1793 static int ahci_sb600_check_ready(struct ata_link *link)
1795 void __iomem *port_mmio = ahci_port_base(link->ap);
1796 u8 status = readl(port_mmio + PORT_TFDATA) & 0xFF;
1797 u32 irq_status = readl(port_mmio + PORT_IRQ_STAT);
1800 * There is no need to check TFDATA if BAD PMP is found due to HW bug,
1801 * which can save timeout delay.
1803 if (irq_status & PORT_IRQ_BAD_PMP)
1806 return ata_check_ready(status);
1809 static int ahci_sb600_softreset(struct ata_link *link, unsigned int *class,
1810 unsigned long deadline)
1812 struct ata_port *ap = link->ap;
1813 void __iomem *port_mmio = ahci_port_base(ap);
1814 int pmp = sata_srst_pmp(link);
1820 rc = ahci_do_softreset(link, class, pmp, deadline,
1821 ahci_sb600_check_ready);
1824 * Soft reset fails on some ATI chips with IPMS set when PMP
1825 * is enabled but SATA HDD/ODD is connected to SATA port,
1826 * do soft reset again to port 0.
1829 irq_sts = readl(port_mmio + PORT_IRQ_STAT);
1830 if (irq_sts & PORT_IRQ_BAD_PMP) {
1831 ata_link_printk(link, KERN_WARNING,
1832 "applying SB600 PMP SRST workaround "
1834 rc = ahci_do_softreset(link, class, 0, deadline,
1842 static int ahci_hardreset(struct ata_link *link, unsigned int *class,
1843 unsigned long deadline)
1845 const unsigned long *timing = sata_ehc_deb_timing(&link->eh_context);
1846 struct ata_port *ap = link->ap;
1847 struct ahci_port_priv *pp = ap->private_data;
1848 u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
1849 struct ata_taskfile tf;
1855 ahci_stop_engine(ap);
1857 /* clear D2H reception area to properly wait for D2H FIS */
1858 ata_tf_init(link->device, &tf);
1860 ata_tf_to_fis(&tf, 0, 0, d2h_fis);
1862 rc = sata_link_hardreset(link, timing, deadline, &online,
1865 ahci_start_engine(ap);
1868 *class = ahci_dev_classify(ap);
1870 DPRINTK("EXIT, rc=%d, class=%u\n", rc, *class);
1874 static int ahci_vt8251_hardreset(struct ata_link *link, unsigned int *class,
1875 unsigned long deadline)
1877 struct ata_port *ap = link->ap;
1883 ahci_stop_engine(ap);
1885 rc = sata_link_hardreset(link, sata_ehc_deb_timing(&link->eh_context),
1886 deadline, &online, NULL);
1888 ahci_start_engine(ap);
1890 DPRINTK("EXIT, rc=%d, class=%u\n", rc, *class);
1892 /* vt8251 doesn't clear BSY on signature FIS reception,
1893 * request follow-up softreset.
1895 return online ? -EAGAIN : rc;
1898 static int ahci_p5wdh_hardreset(struct ata_link *link, unsigned int *class,
1899 unsigned long deadline)
1901 struct ata_port *ap = link->ap;
1902 struct ahci_port_priv *pp = ap->private_data;
1903 u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
1904 struct ata_taskfile tf;
1908 ahci_stop_engine(ap);
1910 /* clear D2H reception area to properly wait for D2H FIS */
1911 ata_tf_init(link->device, &tf);
1913 ata_tf_to_fis(&tf, 0, 0, d2h_fis);
1915 rc = sata_link_hardreset(link, sata_ehc_deb_timing(&link->eh_context),
1916 deadline, &online, NULL);
1918 ahci_start_engine(ap);
1920 /* The pseudo configuration device on SIMG4726 attached to
1921 * ASUS P5W-DH Deluxe doesn't send signature FIS after
1922 * hardreset if no device is attached to the first downstream
1923 * port && the pseudo device locks up on SRST w/ PMP==0. To
1924 * work around this, wait for !BSY only briefly. If BSY isn't
1925 * cleared, perform CLO and proceed to IDENTIFY (achieved by
1926 * ATA_LFLAG_NO_SRST and ATA_LFLAG_ASSUME_ATA).
1928 * Wait for two seconds. Devices attached to downstream port
1929 * which can't process the following IDENTIFY after this will
1930 * have to be reset again. For most cases, this should
1931 * suffice while making probing snappish enough.
1934 rc = ata_wait_after_reset(link, jiffies + 2 * HZ,
1937 ahci_kick_engine(ap, 0);
1942 static void ahci_postreset(struct ata_link *link, unsigned int *class)
1944 struct ata_port *ap = link->ap;
1945 void __iomem *port_mmio = ahci_port_base(ap);
1948 ata_std_postreset(link, class);
1950 /* Make sure port's ATAPI bit is set appropriately */
1951 new_tmp = tmp = readl(port_mmio + PORT_CMD);
1952 if (*class == ATA_DEV_ATAPI)
1953 new_tmp |= PORT_CMD_ATAPI;
1955 new_tmp &= ~PORT_CMD_ATAPI;
1956 if (new_tmp != tmp) {
1957 writel(new_tmp, port_mmio + PORT_CMD);
1958 readl(port_mmio + PORT_CMD); /* flush */
1962 static unsigned int ahci_fill_sg(struct ata_queued_cmd *qc, void *cmd_tbl)
1964 struct scatterlist *sg;
1965 struct ahci_sg *ahci_sg = cmd_tbl + AHCI_CMD_TBL_HDR_SZ;
1971 * Next, the S/G list.
1973 for_each_sg(qc->sg, sg, qc->n_elem, si) {
1974 dma_addr_t addr = sg_dma_address(sg);
1975 u32 sg_len = sg_dma_len(sg);
1977 ahci_sg[si].addr = cpu_to_le32(addr & 0xffffffff);
1978 ahci_sg[si].addr_hi = cpu_to_le32((addr >> 16) >> 16);
1979 ahci_sg[si].flags_size = cpu_to_le32(sg_len - 1);
1985 static void ahci_qc_prep(struct ata_queued_cmd *qc)
1987 struct ata_port *ap = qc->ap;
1988 struct ahci_port_priv *pp = ap->private_data;
1989 int is_atapi = ata_is_atapi(qc->tf.protocol);
1992 const u32 cmd_fis_len = 5; /* five dwords */
1993 unsigned int n_elem;
1996 * Fill in command table information. First, the header,
1997 * a SATA Register - Host to Device command FIS.
1999 cmd_tbl = pp->cmd_tbl + qc->tag * AHCI_CMD_TBL_SZ;
2001 ata_tf_to_fis(&qc->tf, qc->dev->link->pmp, 1, cmd_tbl);
2003 memset(cmd_tbl + AHCI_CMD_TBL_CDB, 0, 32);
2004 memcpy(cmd_tbl + AHCI_CMD_TBL_CDB, qc->cdb, qc->dev->cdb_len);
2008 if (qc->flags & ATA_QCFLAG_DMAMAP)
2009 n_elem = ahci_fill_sg(qc, cmd_tbl);
2012 * Fill in command slot information.
2014 opts = cmd_fis_len | n_elem << 16 | (qc->dev->link->pmp << 12);
2015 if (qc->tf.flags & ATA_TFLAG_WRITE)
2016 opts |= AHCI_CMD_WRITE;
2018 opts |= AHCI_CMD_ATAPI | AHCI_CMD_PREFETCH;
2020 ahci_fill_cmd_slot(pp, qc->tag, opts);
2023 static void ahci_error_intr(struct ata_port *ap, u32 irq_stat)
2025 struct ahci_host_priv *hpriv = ap->host->private_data;
2026 struct ahci_port_priv *pp = ap->private_data;
2027 struct ata_eh_info *host_ehi = &ap->link.eh_info;
2028 struct ata_link *link = NULL;
2029 struct ata_queued_cmd *active_qc;
2030 struct ata_eh_info *active_ehi;
2033 /* determine active link */
2034 ata_for_each_link(link, ap, EDGE)
2035 if (ata_link_active(link))
2040 active_qc = ata_qc_from_tag(ap, link->active_tag);
2041 active_ehi = &link->eh_info;
2043 /* record irq stat */
2044 ata_ehi_clear_desc(host_ehi);
2045 ata_ehi_push_desc(host_ehi, "irq_stat 0x%08x", irq_stat);
2047 /* AHCI needs SError cleared; otherwise, it might lock up */
2048 ahci_scr_read(&ap->link, SCR_ERROR, &serror);
2049 ahci_scr_write(&ap->link, SCR_ERROR, serror);
2050 host_ehi->serror |= serror;
2052 /* some controllers set IRQ_IF_ERR on device errors, ignore it */
2053 if (hpriv->flags & AHCI_HFLAG_IGN_IRQ_IF_ERR)
2054 irq_stat &= ~PORT_IRQ_IF_ERR;
2056 if (irq_stat & PORT_IRQ_TF_ERR) {
2057 /* If qc is active, charge it; otherwise, the active
2058 * link. There's no active qc on NCQ errors. It will
2059 * be determined by EH by reading log page 10h.
2062 active_qc->err_mask |= AC_ERR_DEV;
2064 active_ehi->err_mask |= AC_ERR_DEV;
2066 if (hpriv->flags & AHCI_HFLAG_IGN_SERR_INTERNAL)
2067 host_ehi->serror &= ~SERR_INTERNAL;
2070 if (irq_stat & PORT_IRQ_UNK_FIS) {
2071 u32 *unk = (u32 *)(pp->rx_fis + RX_FIS_UNK);
2073 active_ehi->err_mask |= AC_ERR_HSM;
2074 active_ehi->action |= ATA_EH_RESET;
2075 ata_ehi_push_desc(active_ehi,
2076 "unknown FIS %08x %08x %08x %08x" ,
2077 unk[0], unk[1], unk[2], unk[3]);
2080 if (sata_pmp_attached(ap) && (irq_stat & PORT_IRQ_BAD_PMP)) {
2081 active_ehi->err_mask |= AC_ERR_HSM;
2082 active_ehi->action |= ATA_EH_RESET;
2083 ata_ehi_push_desc(active_ehi, "incorrect PMP");
2086 if (irq_stat & (PORT_IRQ_HBUS_ERR | PORT_IRQ_HBUS_DATA_ERR)) {
2087 host_ehi->err_mask |= AC_ERR_HOST_BUS;
2088 host_ehi->action |= ATA_EH_RESET;
2089 ata_ehi_push_desc(host_ehi, "host bus error");
2092 if (irq_stat & PORT_IRQ_IF_ERR) {
2093 host_ehi->err_mask |= AC_ERR_ATA_BUS;
2094 host_ehi->action |= ATA_EH_RESET;
2095 ata_ehi_push_desc(host_ehi, "interface fatal error");
2098 if (irq_stat & (PORT_IRQ_CONNECT | PORT_IRQ_PHYRDY)) {
2099 ata_ehi_hotplugged(host_ehi);
2100 ata_ehi_push_desc(host_ehi, "%s",
2101 irq_stat & PORT_IRQ_CONNECT ?
2102 "connection status changed" : "PHY RDY changed");
2105 /* okay, let's hand over to EH */
2107 if (irq_stat & PORT_IRQ_FREEZE)
2108 ata_port_freeze(ap);
2113 static void ahci_port_intr(struct ata_port *ap)
2115 void __iomem *port_mmio = ahci_port_base(ap);
2116 struct ata_eh_info *ehi = &ap->link.eh_info;
2117 struct ahci_port_priv *pp = ap->private_data;
2118 struct ahci_host_priv *hpriv = ap->host->private_data;
2119 int resetting = !!(ap->pflags & ATA_PFLAG_RESETTING);
2120 u32 status, qc_active;
2123 status = readl(port_mmio + PORT_IRQ_STAT);
2124 writel(status, port_mmio + PORT_IRQ_STAT);
2126 /* ignore BAD_PMP while resetting */
2127 if (unlikely(resetting))
2128 status &= ~PORT_IRQ_BAD_PMP;
2130 /* If we are getting PhyRdy, this is
2131 * just a power state change, we should
2132 * clear out this, plus the PhyRdy/Comm
2133 * Wake bits from Serror
2135 if ((hpriv->flags & AHCI_HFLAG_NO_HOTPLUG) &&
2136 (status & PORT_IRQ_PHYRDY)) {
2137 status &= ~PORT_IRQ_PHYRDY;
2138 ahci_scr_write(&ap->link, SCR_ERROR, ((1 << 16) | (1 << 18)));
2141 if (unlikely(status & PORT_IRQ_ERROR)) {
2142 ahci_error_intr(ap, status);
2146 if (status & PORT_IRQ_SDB_FIS) {
2147 /* If SNotification is available, leave notification
2148 * handling to sata_async_notification(). If not,
2149 * emulate it by snooping SDB FIS RX area.
2151 * Snooping FIS RX area is probably cheaper than
2152 * poking SNotification but some constrollers which
2153 * implement SNotification, ICH9 for example, don't
2154 * store AN SDB FIS into receive area.
2156 if (hpriv->cap & HOST_CAP_SNTF)
2157 sata_async_notification(ap);
2159 /* If the 'N' bit in word 0 of the FIS is set,
2160 * we just received asynchronous notification.
2161 * Tell libata about it.
2163 const __le32 *f = pp->rx_fis + RX_FIS_SDB;
2164 u32 f0 = le32_to_cpu(f[0]);
2167 sata_async_notification(ap);
2171 /* pp->active_link is valid iff any command is in flight */
2172 if (ap->qc_active && pp->active_link->sactive)
2173 qc_active = readl(port_mmio + PORT_SCR_ACT);
2175 qc_active = readl(port_mmio + PORT_CMD_ISSUE);
2177 rc = ata_qc_complete_multiple(ap, qc_active);
2179 /* while resetting, invalid completions are expected */
2180 if (unlikely(rc < 0 && !resetting)) {
2181 ehi->err_mask |= AC_ERR_HSM;
2182 ehi->action |= ATA_EH_RESET;
2183 ata_port_freeze(ap);
2187 static irqreturn_t ahci_interrupt(int irq, void *dev_instance)
2189 struct ata_host *host = dev_instance;
2190 struct ahci_host_priv *hpriv;
2191 unsigned int i, handled = 0;
2193 u32 irq_stat, irq_masked;
2197 hpriv = host->private_data;
2198 mmio = host->iomap[AHCI_PCI_BAR];
2200 /* sigh. 0xffffffff is a valid return from h/w */
2201 irq_stat = readl(mmio + HOST_IRQ_STAT);
2205 irq_masked = irq_stat & hpriv->port_map;
2207 spin_lock(&host->lock);
2209 for (i = 0; i < host->n_ports; i++) {
2210 struct ata_port *ap;
2212 if (!(irq_masked & (1 << i)))
2215 ap = host->ports[i];
2218 VPRINTK("port %u\n", i);
2220 VPRINTK("port %u (no irq)\n", i);
2221 if (ata_ratelimit())
2222 dev_printk(KERN_WARNING, host->dev,
2223 "interrupt on disabled port %u\n", i);
2229 /* HOST_IRQ_STAT behaves as level triggered latch meaning that
2230 * it should be cleared after all the port events are cleared;
2231 * otherwise, it will raise a spurious interrupt after each
2232 * valid one. Please read section 10.6.2 of ahci 1.1 for more
2235 * Also, use the unmasked value to clear interrupt as spurious
2236 * pending event on a dummy port might cause screaming IRQ.
2238 writel(irq_stat, mmio + HOST_IRQ_STAT);
2240 spin_unlock(&host->lock);
2244 return IRQ_RETVAL(handled);
2247 static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc)
2249 struct ata_port *ap = qc->ap;
2250 void __iomem *port_mmio = ahci_port_base(ap);
2251 struct ahci_port_priv *pp = ap->private_data;
2253 /* Keep track of the currently active link. It will be used
2254 * in completion path to determine whether NCQ phase is in
2257 pp->active_link = qc->dev->link;
2259 if (qc->tf.protocol == ATA_PROT_NCQ)
2260 writel(1 << qc->tag, port_mmio + PORT_SCR_ACT);
2261 writel(1 << qc->tag, port_mmio + PORT_CMD_ISSUE);
2263 ahci_sw_activity(qc->dev->link);
2268 static bool ahci_qc_fill_rtf(struct ata_queued_cmd *qc)
2270 struct ahci_port_priv *pp = qc->ap->private_data;
2271 u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
2273 ata_tf_from_fis(d2h_fis, &qc->result_tf);
2277 static void ahci_freeze(struct ata_port *ap)
2279 void __iomem *port_mmio = ahci_port_base(ap);
2282 writel(0, port_mmio + PORT_IRQ_MASK);
2285 static void ahci_thaw(struct ata_port *ap)
2287 void __iomem *mmio = ap->host->iomap[AHCI_PCI_BAR];
2288 void __iomem *port_mmio = ahci_port_base(ap);
2290 struct ahci_port_priv *pp = ap->private_data;
2293 tmp = readl(port_mmio + PORT_IRQ_STAT);
2294 writel(tmp, port_mmio + PORT_IRQ_STAT);
2295 writel(1 << ap->port_no, mmio + HOST_IRQ_STAT);
2297 /* turn IRQ back on */
2298 writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
2301 static void ahci_error_handler(struct ata_port *ap)
2303 if (!(ap->pflags & ATA_PFLAG_FROZEN)) {
2304 /* restart engine */
2305 ahci_stop_engine(ap);
2306 ahci_start_engine(ap);
2309 sata_pmp_error_handler(ap);
2312 static void ahci_post_internal_cmd(struct ata_queued_cmd *qc)
2314 struct ata_port *ap = qc->ap;
2316 /* make DMA engine forget about the failed command */
2317 if (qc->flags & ATA_QCFLAG_FAILED)
2318 ahci_kick_engine(ap, 1);
2321 static void ahci_pmp_attach(struct ata_port *ap)
2323 void __iomem *port_mmio = ahci_port_base(ap);
2324 struct ahci_port_priv *pp = ap->private_data;
2327 cmd = readl(port_mmio + PORT_CMD);
2328 cmd |= PORT_CMD_PMP;
2329 writel(cmd, port_mmio + PORT_CMD);
2331 pp->intr_mask |= PORT_IRQ_BAD_PMP;
2332 writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
2335 static void ahci_pmp_detach(struct ata_port *ap)
2337 void __iomem *port_mmio = ahci_port_base(ap);
2338 struct ahci_port_priv *pp = ap->private_data;
2341 cmd = readl(port_mmio + PORT_CMD);
2342 cmd &= ~PORT_CMD_PMP;
2343 writel(cmd, port_mmio + PORT_CMD);
2345 pp->intr_mask &= ~PORT_IRQ_BAD_PMP;
2346 writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
2349 static int ahci_port_resume(struct ata_port *ap)
2352 ahci_start_port(ap);
2354 if (sata_pmp_attached(ap))
2355 ahci_pmp_attach(ap);
2357 ahci_pmp_detach(ap);
2363 static int ahci_port_suspend(struct ata_port *ap, pm_message_t mesg)
2365 const char *emsg = NULL;
2368 rc = ahci_deinit_port(ap, &emsg);
2370 ahci_power_down(ap);
2372 ata_port_printk(ap, KERN_ERR, "%s (%d)\n", emsg, rc);
2373 ahci_start_port(ap);
2379 static int ahci_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
2381 struct ata_host *host = dev_get_drvdata(&pdev->dev);
2382 struct ahci_host_priv *hpriv = host->private_data;
2383 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
2386 if (mesg.event & PM_EVENT_SUSPEND &&
2387 hpriv->flags & AHCI_HFLAG_NO_SUSPEND) {
2388 dev_printk(KERN_ERR, &pdev->dev,
2389 "BIOS update required for suspend/resume\n");
2393 if (mesg.event & PM_EVENT_SLEEP) {
2394 /* AHCI spec rev1.1 section 8.3.3:
2395 * Software must disable interrupts prior to requesting a
2396 * transition of the HBA to D3 state.
2398 ctl = readl(mmio + HOST_CTL);
2399 ctl &= ~HOST_IRQ_EN;
2400 writel(ctl, mmio + HOST_CTL);
2401 readl(mmio + HOST_CTL); /* flush */
2404 return ata_pci_device_suspend(pdev, mesg);
2407 static int ahci_pci_device_resume(struct pci_dev *pdev)
2409 struct ata_host *host = dev_get_drvdata(&pdev->dev);
2412 rc = ata_pci_device_do_resume(pdev);
2416 if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
2417 rc = ahci_reset_controller(host);
2421 ahci_init_controller(host);
2424 ata_host_resume(host);
2430 static int ahci_port_start(struct ata_port *ap)
2432 struct device *dev = ap->host->dev;
2433 struct ahci_port_priv *pp;
2437 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
2441 mem = dmam_alloc_coherent(dev, AHCI_PORT_PRIV_DMA_SZ, &mem_dma,
2445 memset(mem, 0, AHCI_PORT_PRIV_DMA_SZ);
2448 * First item in chunk of DMA memory: 32-slot command table,
2449 * 32 bytes each in size
2452 pp->cmd_slot_dma = mem_dma;
2454 mem += AHCI_CMD_SLOT_SZ;
2455 mem_dma += AHCI_CMD_SLOT_SZ;
2458 * Second item: Received-FIS area
2461 pp->rx_fis_dma = mem_dma;
2463 mem += AHCI_RX_FIS_SZ;
2464 mem_dma += AHCI_RX_FIS_SZ;
2467 * Third item: data area for storing a single command
2468 * and its scatter-gather table
2471 pp->cmd_tbl_dma = mem_dma;
2474 * Save off initial list of interrupts to be enabled.
2475 * This could be changed later
2477 pp->intr_mask = DEF_PORT_IRQ;
2479 ap->private_data = pp;
2481 /* engage engines, captain */
2482 return ahci_port_resume(ap);
2485 static void ahci_port_stop(struct ata_port *ap)
2487 const char *emsg = NULL;
2490 /* de-initialize port */
2491 rc = ahci_deinit_port(ap, &emsg);
2493 ata_port_printk(ap, KERN_WARNING, "%s (%d)\n", emsg, rc);
2496 static int ahci_configure_dma_masks(struct pci_dev *pdev, int using_dac)
2501 !pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
2502 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
2504 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
2506 dev_printk(KERN_ERR, &pdev->dev,
2507 "64-bit DMA enable failed\n");
2512 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2514 dev_printk(KERN_ERR, &pdev->dev,
2515 "32-bit DMA enable failed\n");
2518 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
2520 dev_printk(KERN_ERR, &pdev->dev,
2521 "32-bit consistent DMA enable failed\n");
2528 static void ahci_print_info(struct ata_host *host)
2530 struct ahci_host_priv *hpriv = host->private_data;
2531 struct pci_dev *pdev = to_pci_dev(host->dev);
2532 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
2533 u32 vers, cap, impl, speed;
2534 const char *speed_s;
2538 vers = readl(mmio + HOST_VERSION);
2540 impl = hpriv->port_map;
2542 speed = (cap >> 20) & 0xf;
2545 else if (speed == 2)
2547 else if (speed == 3)
2552 pci_read_config_word(pdev, 0x0a, &cc);
2553 if (cc == PCI_CLASS_STORAGE_IDE)
2555 else if (cc == PCI_CLASS_STORAGE_SATA)
2557 else if (cc == PCI_CLASS_STORAGE_RAID)
2562 dev_printk(KERN_INFO, &pdev->dev,
2563 "AHCI %02x%02x.%02x%02x "
2564 "%u slots %u ports %s Gbps 0x%x impl %s mode\n"
2567 (vers >> 24) & 0xff,
2568 (vers >> 16) & 0xff,
2572 ((cap >> 8) & 0x1f) + 1,
2578 dev_printk(KERN_INFO, &pdev->dev,
2585 cap & (1 << 31) ? "64bit " : "",
2586 cap & (1 << 30) ? "ncq " : "",
2587 cap & (1 << 29) ? "sntf " : "",
2588 cap & (1 << 28) ? "ilck " : "",
2589 cap & (1 << 27) ? "stag " : "",
2590 cap & (1 << 26) ? "pm " : "",
2591 cap & (1 << 25) ? "led " : "",
2593 cap & (1 << 24) ? "clo " : "",
2594 cap & (1 << 19) ? "nz " : "",
2595 cap & (1 << 18) ? "only " : "",
2596 cap & (1 << 17) ? "pmp " : "",
2597 cap & (1 << 15) ? "pio " : "",
2598 cap & (1 << 14) ? "slum " : "",
2599 cap & (1 << 13) ? "part " : "",
2600 cap & (1 << 6) ? "ems ": ""
2604 /* On ASUS P5W DH Deluxe, the second port of PCI device 00:1f.2 is
2605 * hardwired to on-board SIMG 4726. The chipset is ICH8 and doesn't
2606 * support PMP and the 4726 either directly exports the device
2607 * attached to the first downstream port or acts as a hardware storage
2608 * controller and emulate a single ATA device (can be RAID 0/1 or some
2609 * other configuration).
2611 * When there's no device attached to the first downstream port of the
2612 * 4726, "Config Disk" appears, which is a pseudo ATA device to
2613 * configure the 4726. However, ATA emulation of the device is very
2614 * lame. It doesn't send signature D2H Reg FIS after the initial
2615 * hardreset, pukes on SRST w/ PMP==0 and has bunch of other issues.
2617 * The following function works around the problem by always using
2618 * hardreset on the port and not depending on receiving signature FIS
2619 * afterward. If signature FIS isn't received soon, ATA class is
2620 * assumed without follow-up softreset.
2622 static void ahci_p5wdh_workaround(struct ata_host *host)
2624 static struct dmi_system_id sysids[] = {
2626 .ident = "P5W DH Deluxe",
2628 DMI_MATCH(DMI_SYS_VENDOR,
2629 "ASUSTEK COMPUTER INC"),
2630 DMI_MATCH(DMI_PRODUCT_NAME, "P5W DH Deluxe"),
2635 struct pci_dev *pdev = to_pci_dev(host->dev);
2637 if (pdev->bus->number == 0 && pdev->devfn == PCI_DEVFN(0x1f, 2) &&
2638 dmi_check_system(sysids)) {
2639 struct ata_port *ap = host->ports[1];
2641 dev_printk(KERN_INFO, &pdev->dev, "enabling ASUS P5W DH "
2642 "Deluxe on-board SIMG4726 workaround\n");
2644 ap->ops = &ahci_p5wdh_ops;
2645 ap->link.flags |= ATA_LFLAG_NO_SRST | ATA_LFLAG_ASSUME_ATA;
2650 * SB600 ahci controller on certain boards can't do 64bit DMA with
2653 static bool ahci_sb600_32bit_only(struct pci_dev *pdev)
2655 static const struct dmi_system_id sysids[] = {
2657 * The oldest version known to be broken is 0901 and
2658 * working is 1501 which was released on 2007-10-26.
2659 * Force 32bit DMA on anything older than 1501.
2660 * Please read bko#9412 for more info.
2663 .ident = "ASUS M2A-VM",
2665 DMI_MATCH(DMI_BOARD_VENDOR,
2666 "ASUSTeK Computer INC."),
2667 DMI_MATCH(DMI_BOARD_NAME, "M2A-VM"),
2669 .driver_data = "20071026", /* yyyymmdd */
2673 const struct dmi_system_id *match;
2675 match = dmi_first_match(sysids);
2676 if (pdev->bus->number != 0 || pdev->devfn != PCI_DEVFN(0x12, 0) ||
2680 if (match->driver_data) {
2681 int year, month, date;
2684 dmi_get_date(DMI_BIOS_DATE, &year, &month, &date);
2685 snprintf(buf, sizeof(buf), "%04d%02d%02d", year, month, date);
2687 if (strcmp(buf, match->driver_data) >= 0)
2690 dev_printk(KERN_WARNING, &pdev->dev, "%s: BIOS too old, "
2691 "forcing 32bit DMA, update BIOS\n", match->ident);
2693 dev_printk(KERN_WARNING, &pdev->dev, "%s: this board can't "
2694 "do 64bit DMA, forcing 32bit\n", match->ident);
2699 static bool ahci_broken_system_poweroff(struct pci_dev *pdev)
2701 static const struct dmi_system_id broken_systems[] = {
2703 .ident = "HP Compaq nx6310",
2705 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
2706 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6310"),
2708 /* PCI slot number of the controller */
2709 .driver_data = (void *)0x1FUL,
2712 .ident = "HP Compaq 6720s",
2714 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
2715 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6720s"),
2717 /* PCI slot number of the controller */
2718 .driver_data = (void *)0x1FUL,
2721 { } /* terminate list */
2723 const struct dmi_system_id *dmi = dmi_first_match(broken_systems);
2726 unsigned long slot = (unsigned long)dmi->driver_data;
2727 /* apply the quirk only to on-board controllers */
2728 return slot == PCI_SLOT(pdev->devfn);
2734 static bool ahci_broken_suspend(struct pci_dev *pdev)
2736 static const struct dmi_system_id sysids[] = {
2738 * On HP dv[4-6] and HDX18 with earlier BIOSen, link
2739 * to the harddisk doesn't become online after
2740 * resuming from STR. Warn and fail suspend.
2745 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
2746 DMI_MATCH(DMI_PRODUCT_NAME,
2747 "HP Pavilion dv4 Notebook PC"),
2749 .driver_data = "F.30", /* cutoff BIOS version */
2754 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
2755 DMI_MATCH(DMI_PRODUCT_NAME,
2756 "HP Pavilion dv5 Notebook PC"),
2758 .driver_data = "F.16", /* cutoff BIOS version */
2763 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
2764 DMI_MATCH(DMI_PRODUCT_NAME,
2765 "HP Pavilion dv6 Notebook PC"),
2767 .driver_data = "F.21", /* cutoff BIOS version */
2772 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
2773 DMI_MATCH(DMI_PRODUCT_NAME,
2774 "HP HDX18 Notebook PC"),
2776 .driver_data = "F.23", /* cutoff BIOS version */
2778 { } /* terminate list */
2780 const struct dmi_system_id *dmi = dmi_first_match(sysids);
2783 if (!dmi || pdev->bus->number || pdev->devfn != PCI_DEVFN(0x1f, 2))
2786 ver = dmi_get_system_info(DMI_BIOS_VERSION);
2788 return !ver || strcmp(ver, dmi->driver_data) < 0;
2791 static bool ahci_broken_online(struct pci_dev *pdev)
2793 #define ENCODE_BUSDEVFN(bus, slot, func) \
2794 (void *)(unsigned long)(((bus) << 8) | PCI_DEVFN((slot), (func)))
2795 static const struct dmi_system_id sysids[] = {
2797 * There are several gigabyte boards which use
2798 * SIMG5723s configured as hardware RAID. Certain
2799 * 5723 firmware revisions shipped there keep the link
2800 * online but fail to answer properly to SRST or
2801 * IDENTIFY when no device is attached downstream
2802 * causing libata to retry quite a few times leading
2803 * to excessive detection delay.
2805 * As these firmwares respond to the second reset try
2806 * with invalid device signature, considering unknown
2807 * sig as offline works around the problem acceptably.
2810 .ident = "EP45-DQ6",
2812 DMI_MATCH(DMI_BOARD_VENDOR,
2813 "Gigabyte Technology Co., Ltd."),
2814 DMI_MATCH(DMI_BOARD_NAME, "EP45-DQ6"),
2816 .driver_data = ENCODE_BUSDEVFN(0x0a, 0x00, 0),
2819 .ident = "EP45-DS5",
2821 DMI_MATCH(DMI_BOARD_VENDOR,
2822 "Gigabyte Technology Co., Ltd."),
2823 DMI_MATCH(DMI_BOARD_NAME, "EP45-DS5"),
2825 .driver_data = ENCODE_BUSDEVFN(0x03, 0x00, 0),
2827 { } /* terminate list */
2829 #undef ENCODE_BUSDEVFN
2830 const struct dmi_system_id *dmi = dmi_first_match(sysids);
2836 val = (unsigned long)dmi->driver_data;
2838 return pdev->bus->number == (val >> 8) && pdev->devfn == (val & 0xff);
2841 static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
2843 static int printed_version;
2844 unsigned int board_id = ent->driver_data;
2845 struct ata_port_info pi = ahci_port_info[board_id];
2846 const struct ata_port_info *ppi[] = { &pi, NULL };
2847 struct device *dev = &pdev->dev;
2848 struct ahci_host_priv *hpriv;
2849 struct ata_host *host;
2854 WARN_ON(ATA_MAX_QUEUE > AHCI_MAX_CMDS);
2856 if (!printed_version++)
2857 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
2859 /* The AHCI driver can only drive the SATA ports, the PATA driver
2860 can drive them all so if both drivers are selected make sure
2861 AHCI stays out of the way */
2862 if (pdev->vendor == PCI_VENDOR_ID_MARVELL && !marvell_enable)
2865 /* acquire resources */
2866 rc = pcim_enable_device(pdev);
2870 /* AHCI controllers often implement SFF compatible interface.
2871 * Grab all PCI BARs just in case.
2873 rc = pcim_iomap_regions_request_all(pdev, 1 << AHCI_PCI_BAR, DRV_NAME);
2875 pcim_pin_device(pdev);
2879 if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
2880 (pdev->device == 0x2652 || pdev->device == 0x2653)) {
2883 /* ICH6s share the same PCI ID for both piix and ahci
2884 * modes. Enabling ahci mode while MAP indicates
2885 * combined mode is a bad idea. Yield to ata_piix.
2887 pci_read_config_byte(pdev, ICH_MAP, &map);
2889 dev_printk(KERN_INFO, &pdev->dev, "controller is in "
2890 "combined mode, can't enable AHCI mode\n");
2895 hpriv = devm_kzalloc(dev, sizeof(*hpriv), GFP_KERNEL);
2898 hpriv->flags |= (unsigned long)pi.private_data;
2900 /* MCP65 revision A1 and A2 can't do MSI */
2901 if (board_id == board_ahci_mcp65 &&
2902 (pdev->revision == 0xa1 || pdev->revision == 0xa2))
2903 hpriv->flags |= AHCI_HFLAG_NO_MSI;
2905 /* SB800 does NOT need the workaround to ignore SERR_INTERNAL */
2906 if (board_id == board_ahci_sb700 && pdev->revision >= 0x40)
2907 hpriv->flags &= ~AHCI_HFLAG_IGN_SERR_INTERNAL;
2909 /* apply sb600 32bit only quirk */
2910 if (ahci_sb600_32bit_only(pdev))
2911 hpriv->flags |= AHCI_HFLAG_32BIT_ONLY;
2913 if (!(hpriv->flags & AHCI_HFLAG_NO_MSI))
2914 pci_enable_msi(pdev);
2916 /* save initial config */
2917 ahci_save_initial_config(pdev, hpriv);
2920 if (hpriv->cap & HOST_CAP_NCQ)
2921 pi.flags |= ATA_FLAG_NCQ | ATA_FLAG_FPDMA_AA;
2923 if (hpriv->cap & HOST_CAP_PMP)
2924 pi.flags |= ATA_FLAG_PMP;
2926 if (ahci_em_messages && (hpriv->cap & HOST_CAP_EMS)) {
2928 void __iomem *mmio = pcim_iomap_table(pdev)[AHCI_PCI_BAR];
2929 u32 em_loc = readl(mmio + HOST_EM_LOC);
2930 u32 em_ctl = readl(mmio + HOST_EM_CTL);
2932 messages = (em_ctl & EM_CTRL_MSG_TYPE) >> 16;
2934 /* we only support LED message type right now */
2935 if ((messages & 0x01) && (ahci_em_messages == 1)) {
2937 hpriv->em_loc = ((em_loc >> 16) * 4);
2938 pi.flags |= ATA_FLAG_EM;
2939 if (!(em_ctl & EM_CTL_ALHD))
2940 pi.flags |= ATA_FLAG_SW_ACTIVITY;
2944 if (ahci_broken_system_poweroff(pdev)) {
2945 pi.flags |= ATA_FLAG_NO_POWEROFF_SPINDOWN;
2946 dev_info(&pdev->dev,
2947 "quirky BIOS, skipping spindown on poweroff\n");
2950 if (ahci_broken_suspend(pdev)) {
2951 hpriv->flags |= AHCI_HFLAG_NO_SUSPEND;
2952 dev_printk(KERN_WARNING, &pdev->dev,
2953 "BIOS update required for suspend/resume\n");
2956 if (ahci_broken_online(pdev)) {
2957 hpriv->flags |= AHCI_HFLAG_SRST_TOUT_IS_OFFLINE;
2958 dev_info(&pdev->dev,
2959 "online status unreliable, applying workaround\n");
2962 /* CAP.NP sometimes indicate the index of the last enabled
2963 * port, at other times, that of the last possible port, so
2964 * determining the maximum port number requires looking at
2965 * both CAP.NP and port_map.
2967 n_ports = max(ahci_nr_ports(hpriv->cap), fls(hpriv->port_map));
2969 host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
2972 host->iomap = pcim_iomap_table(pdev);
2973 host->private_data = hpriv;
2975 if (!(hpriv->cap & HOST_CAP_SSS) || ahci_ignore_sss)
2976 host->flags |= ATA_HOST_PARALLEL_SCAN;
2978 printk(KERN_INFO "ahci: SSS flag set, parallel bus scan disabled\n");
2980 if (pi.flags & ATA_FLAG_EM)
2981 ahci_reset_em(host);
2983 for (i = 0; i < host->n_ports; i++) {
2984 struct ata_port *ap = host->ports[i];
2986 ata_port_pbar_desc(ap, AHCI_PCI_BAR, -1, "abar");
2987 ata_port_pbar_desc(ap, AHCI_PCI_BAR,
2988 0x100 + ap->port_no * 0x80, "port");
2990 /* set initial link pm policy */
2991 ap->pm_policy = NOT_AVAILABLE;
2993 /* set enclosure management message type */
2994 if (ap->flags & ATA_FLAG_EM)
2995 ap->em_message_type = ahci_em_messages;
2998 /* disabled/not-implemented port */
2999 if (!(hpriv->port_map & (1 << i)))
3000 ap->ops = &ata_dummy_port_ops;
3003 /* apply workaround for ASUS P5W DH Deluxe mainboard */
3004 ahci_p5wdh_workaround(host);
3006 /* initialize adapter */
3007 rc = ahci_configure_dma_masks(pdev, hpriv->cap & HOST_CAP_64);
3011 rc = ahci_reset_controller(host);
3015 ahci_init_controller(host);
3016 ahci_print_info(host);
3018 pci_set_master(pdev);
3019 return ata_host_activate(host, pdev->irq, ahci_interrupt, IRQF_SHARED,
3023 static int __init ahci_init(void)
3025 return pci_register_driver(&ahci_pci_driver);
3028 static void __exit ahci_exit(void)
3030 pci_unregister_driver(&ahci_pci_driver);
3034 MODULE_AUTHOR("Jeff Garzik");
3035 MODULE_DESCRIPTION("AHCI SATA low-level driver");
3036 MODULE_LICENSE("GPL");
3037 MODULE_DEVICE_TABLE(pci, ahci_pci_tbl);
3038 MODULE_VERSION(DRV_VERSION);
3040 module_init(ahci_init);
3041 module_exit(ahci_exit);