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 module_param_named(skip_host_reset, ahci_skip_host_reset, int, 0444);
65 MODULE_PARM_DESC(skip_host_reset, "skip global host reset (0=don't skip, 1=skip)");
67 static int ahci_enable_alpm(struct ata_port *ap,
69 static void ahci_disable_alpm(struct ata_port *ap);
70 static ssize_t ahci_led_show(struct ata_port *ap, char *buf);
71 static ssize_t ahci_led_store(struct ata_port *ap, const char *buf,
73 static ssize_t ahci_transmit_led_message(struct ata_port *ap, u32 state,
80 AHCI_MAX_SG = 168, /* hardware max is 64K */
81 AHCI_DMA_BOUNDARY = 0xffffffff,
84 AHCI_CMD_SLOT_SZ = AHCI_MAX_CMDS * AHCI_CMD_SZ,
86 AHCI_CMD_TBL_CDB = 0x40,
87 AHCI_CMD_TBL_HDR_SZ = 0x80,
88 AHCI_CMD_TBL_SZ = AHCI_CMD_TBL_HDR_SZ + (AHCI_MAX_SG * 16),
89 AHCI_CMD_TBL_AR_SZ = AHCI_CMD_TBL_SZ * AHCI_MAX_CMDS,
90 AHCI_PORT_PRIV_DMA_SZ = AHCI_CMD_SLOT_SZ + AHCI_CMD_TBL_AR_SZ +
92 AHCI_IRQ_ON_SG = (1 << 31),
93 AHCI_CMD_ATAPI = (1 << 5),
94 AHCI_CMD_WRITE = (1 << 6),
95 AHCI_CMD_PREFETCH = (1 << 7),
96 AHCI_CMD_RESET = (1 << 8),
97 AHCI_CMD_CLR_BUSY = (1 << 10),
99 RX_FIS_D2H_REG = 0x40, /* offset of D2H Register FIS data */
100 RX_FIS_SDB = 0x58, /* offset of SDB FIS data */
101 RX_FIS_UNK = 0x60, /* offset of Unknown FIS data */
104 board_ahci_vt8251 = 1,
105 board_ahci_ign_iferr = 2,
106 board_ahci_sb600 = 3,
108 board_ahci_sb700 = 5,
109 board_ahci_mcp65 = 6,
110 board_ahci_nopmp = 7,
112 /* global controller registers */
113 HOST_CAP = 0x00, /* host capabilities */
114 HOST_CTL = 0x04, /* global host control */
115 HOST_IRQ_STAT = 0x08, /* interrupt status */
116 HOST_PORTS_IMPL = 0x0c, /* bitmap of implemented ports */
117 HOST_VERSION = 0x10, /* AHCI spec. version compliancy */
118 HOST_EM_LOC = 0x1c, /* Enclosure Management location */
119 HOST_EM_CTL = 0x20, /* Enclosure Management Control */
122 HOST_RESET = (1 << 0), /* reset controller; self-clear */
123 HOST_IRQ_EN = (1 << 1), /* global IRQ enable */
124 HOST_AHCI_EN = (1 << 31), /* AHCI enabled */
127 HOST_CAP_EMS = (1 << 6), /* Enclosure Management support */
128 HOST_CAP_SSC = (1 << 14), /* Slumber capable */
129 HOST_CAP_PMP = (1 << 17), /* Port Multiplier support */
130 HOST_CAP_CLO = (1 << 24), /* Command List Override support */
131 HOST_CAP_ALPM = (1 << 26), /* Aggressive Link PM support */
132 HOST_CAP_SSS = (1 << 27), /* Staggered Spin-up */
133 HOST_CAP_SNTF = (1 << 29), /* SNotification register */
134 HOST_CAP_NCQ = (1 << 30), /* Native Command Queueing */
135 HOST_CAP_64 = (1 << 31), /* PCI DAC (64-bit DMA) support */
137 /* registers for each SATA port */
138 PORT_LST_ADDR = 0x00, /* command list DMA addr */
139 PORT_LST_ADDR_HI = 0x04, /* command list DMA addr hi */
140 PORT_FIS_ADDR = 0x08, /* FIS rx buf addr */
141 PORT_FIS_ADDR_HI = 0x0c, /* FIS rx buf addr hi */
142 PORT_IRQ_STAT = 0x10, /* interrupt status */
143 PORT_IRQ_MASK = 0x14, /* interrupt enable/disable mask */
144 PORT_CMD = 0x18, /* port command */
145 PORT_TFDATA = 0x20, /* taskfile data */
146 PORT_SIG = 0x24, /* device TF signature */
147 PORT_CMD_ISSUE = 0x38, /* command issue */
148 PORT_SCR_STAT = 0x28, /* SATA phy register: SStatus */
149 PORT_SCR_CTL = 0x2c, /* SATA phy register: SControl */
150 PORT_SCR_ERR = 0x30, /* SATA phy register: SError */
151 PORT_SCR_ACT = 0x34, /* SATA phy register: SActive */
152 PORT_SCR_NTF = 0x3c, /* SATA phy register: SNotification */
154 /* PORT_IRQ_{STAT,MASK} bits */
155 PORT_IRQ_COLD_PRES = (1 << 31), /* cold presence detect */
156 PORT_IRQ_TF_ERR = (1 << 30), /* task file error */
157 PORT_IRQ_HBUS_ERR = (1 << 29), /* host bus fatal error */
158 PORT_IRQ_HBUS_DATA_ERR = (1 << 28), /* host bus data error */
159 PORT_IRQ_IF_ERR = (1 << 27), /* interface fatal error */
160 PORT_IRQ_IF_NONFATAL = (1 << 26), /* interface non-fatal error */
161 PORT_IRQ_OVERFLOW = (1 << 24), /* xfer exhausted available S/G */
162 PORT_IRQ_BAD_PMP = (1 << 23), /* incorrect port multiplier */
164 PORT_IRQ_PHYRDY = (1 << 22), /* PhyRdy changed */
165 PORT_IRQ_DEV_ILCK = (1 << 7), /* device interlock */
166 PORT_IRQ_CONNECT = (1 << 6), /* port connect change status */
167 PORT_IRQ_SG_DONE = (1 << 5), /* descriptor processed */
168 PORT_IRQ_UNK_FIS = (1 << 4), /* unknown FIS rx'd */
169 PORT_IRQ_SDB_FIS = (1 << 3), /* Set Device Bits FIS rx'd */
170 PORT_IRQ_DMAS_FIS = (1 << 2), /* DMA Setup FIS rx'd */
171 PORT_IRQ_PIOS_FIS = (1 << 1), /* PIO Setup FIS rx'd */
172 PORT_IRQ_D2H_REG_FIS = (1 << 0), /* D2H Register FIS rx'd */
174 PORT_IRQ_FREEZE = PORT_IRQ_HBUS_ERR |
180 PORT_IRQ_ERROR = PORT_IRQ_FREEZE |
182 PORT_IRQ_HBUS_DATA_ERR,
183 DEF_PORT_IRQ = PORT_IRQ_ERROR | PORT_IRQ_SG_DONE |
184 PORT_IRQ_SDB_FIS | PORT_IRQ_DMAS_FIS |
185 PORT_IRQ_PIOS_FIS | PORT_IRQ_D2H_REG_FIS,
188 PORT_CMD_ASP = (1 << 27), /* Aggressive Slumber/Partial */
189 PORT_CMD_ALPE = (1 << 26), /* Aggressive Link PM enable */
190 PORT_CMD_ATAPI = (1 << 24), /* Device is ATAPI */
191 PORT_CMD_PMP = (1 << 17), /* PMP attached */
192 PORT_CMD_LIST_ON = (1 << 15), /* cmd list DMA engine running */
193 PORT_CMD_FIS_ON = (1 << 14), /* FIS DMA engine running */
194 PORT_CMD_FIS_RX = (1 << 4), /* Enable FIS receive DMA engine */
195 PORT_CMD_CLO = (1 << 3), /* Command list override */
196 PORT_CMD_POWER_ON = (1 << 2), /* Power up device */
197 PORT_CMD_SPIN_UP = (1 << 1), /* Spin up device */
198 PORT_CMD_START = (1 << 0), /* Enable port DMA engine */
200 PORT_CMD_ICC_MASK = (0xf << 28), /* i/f ICC state mask */
201 PORT_CMD_ICC_ACTIVE = (0x1 << 28), /* Put i/f in active state */
202 PORT_CMD_ICC_PARTIAL = (0x2 << 28), /* Put i/f in partial state */
203 PORT_CMD_ICC_SLUMBER = (0x6 << 28), /* Put i/f in slumber state */
205 /* hpriv->flags bits */
206 AHCI_HFLAG_NO_NCQ = (1 << 0),
207 AHCI_HFLAG_IGN_IRQ_IF_ERR = (1 << 1), /* ignore IRQ_IF_ERR */
208 AHCI_HFLAG_IGN_SERR_INTERNAL = (1 << 2), /* ignore SERR_INTERNAL */
209 AHCI_HFLAG_32BIT_ONLY = (1 << 3), /* force 32bit */
210 AHCI_HFLAG_MV_PATA = (1 << 4), /* PATA port */
211 AHCI_HFLAG_NO_MSI = (1 << 5), /* no PCI MSI */
212 AHCI_HFLAG_NO_PMP = (1 << 6), /* no PMP */
213 AHCI_HFLAG_NO_HOTPLUG = (1 << 7), /* ignore PxSERR.DIAG.N */
214 AHCI_HFLAG_SECT255 = (1 << 8), /* max 255 sectors */
215 AHCI_HFLAG_YES_NCQ = (1 << 9), /* force NCQ cap on */
219 AHCI_FLAG_COMMON = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
220 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA |
221 ATA_FLAG_ACPI_SATA | ATA_FLAG_AN |
224 ICH_MAP = 0x90, /* ICH MAP register */
227 EM_CTL_RST = (1 << 9), /* Reset */
228 EM_CTL_TM = (1 << 8), /* Transmit Message */
229 EM_CTL_ALHD = (1 << 26), /* Activity LED */
232 struct ahci_cmd_hdr {
247 struct ahci_em_priv {
248 enum sw_activity blink_policy;
249 struct timer_list timer;
250 unsigned long saved_activity;
251 unsigned long activity;
252 unsigned long led_state;
255 struct ahci_host_priv {
256 unsigned int flags; /* AHCI_HFLAG_* */
257 u32 cap; /* cap to use */
258 u32 port_map; /* port map to use */
259 u32 saved_cap; /* saved initial cap */
260 u32 saved_port_map; /* saved initial port_map */
261 u32 em_loc; /* enclosure management location */
264 struct ahci_port_priv {
265 struct ata_link *active_link;
266 struct ahci_cmd_hdr *cmd_slot;
267 dma_addr_t cmd_slot_dma;
269 dma_addr_t cmd_tbl_dma;
271 dma_addr_t rx_fis_dma;
272 /* for NCQ spurious interrupt analysis */
273 unsigned int ncq_saw_d2h:1;
274 unsigned int ncq_saw_dmas:1;
275 unsigned int ncq_saw_sdb:1;
276 u32 intr_mask; /* interrupts to enable */
277 struct ahci_em_priv em_priv[MAX_SLOTS];/* enclosure management info
281 static int ahci_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
282 static int ahci_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
283 static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
284 static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc);
285 static bool ahci_qc_fill_rtf(struct ata_queued_cmd *qc);
286 static int ahci_port_start(struct ata_port *ap);
287 static void ahci_port_stop(struct ata_port *ap);
288 static void ahci_qc_prep(struct ata_queued_cmd *qc);
289 static void ahci_freeze(struct ata_port *ap);
290 static void ahci_thaw(struct ata_port *ap);
291 static void ahci_pmp_attach(struct ata_port *ap);
292 static void ahci_pmp_detach(struct ata_port *ap);
293 static int ahci_softreset(struct ata_link *link, unsigned int *class,
294 unsigned long deadline);
295 static int ahci_sb600_softreset(struct ata_link *link, unsigned int *class,
296 unsigned long deadline);
297 static int ahci_hardreset(struct ata_link *link, unsigned int *class,
298 unsigned long deadline);
299 static int ahci_vt8251_hardreset(struct ata_link *link, unsigned int *class,
300 unsigned long deadline);
301 static int ahci_p5wdh_hardreset(struct ata_link *link, unsigned int *class,
302 unsigned long deadline);
303 static void ahci_postreset(struct ata_link *link, unsigned int *class);
304 static void ahci_error_handler(struct ata_port *ap);
305 static void ahci_post_internal_cmd(struct ata_queued_cmd *qc);
306 static int ahci_port_resume(struct ata_port *ap);
307 static void ahci_dev_config(struct ata_device *dev);
308 static unsigned int ahci_fill_sg(struct ata_queued_cmd *qc, void *cmd_tbl);
309 static void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag,
312 static int ahci_port_suspend(struct ata_port *ap, pm_message_t mesg);
313 static int ahci_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
314 static int ahci_pci_device_resume(struct pci_dev *pdev);
316 static ssize_t ahci_activity_show(struct ata_device *dev, char *buf);
317 static ssize_t ahci_activity_store(struct ata_device *dev,
318 enum sw_activity val);
319 static void ahci_init_sw_activity(struct ata_link *link);
321 static struct device_attribute *ahci_shost_attrs[] = {
322 &dev_attr_link_power_management_policy,
323 &dev_attr_em_message_type,
324 &dev_attr_em_message,
328 static struct device_attribute *ahci_sdev_attrs[] = {
329 &dev_attr_sw_activity,
330 &dev_attr_unload_heads,
334 static struct scsi_host_template ahci_sht = {
335 ATA_NCQ_SHT(DRV_NAME),
336 .can_queue = AHCI_MAX_CMDS - 1,
337 .sg_tablesize = AHCI_MAX_SG,
338 .dma_boundary = AHCI_DMA_BOUNDARY,
339 .shost_attrs = ahci_shost_attrs,
340 .sdev_attrs = ahci_sdev_attrs,
343 static struct ata_port_operations ahci_ops = {
344 .inherits = &sata_pmp_port_ops,
346 .qc_defer = sata_pmp_qc_defer_cmd_switch,
347 .qc_prep = ahci_qc_prep,
348 .qc_issue = ahci_qc_issue,
349 .qc_fill_rtf = ahci_qc_fill_rtf,
351 .freeze = ahci_freeze,
353 .softreset = ahci_softreset,
354 .hardreset = ahci_hardreset,
355 .postreset = ahci_postreset,
356 .pmp_softreset = ahci_softreset,
357 .error_handler = ahci_error_handler,
358 .post_internal_cmd = ahci_post_internal_cmd,
359 .dev_config = ahci_dev_config,
361 .scr_read = ahci_scr_read,
362 .scr_write = ahci_scr_write,
363 .pmp_attach = ahci_pmp_attach,
364 .pmp_detach = ahci_pmp_detach,
366 .enable_pm = ahci_enable_alpm,
367 .disable_pm = ahci_disable_alpm,
368 .em_show = ahci_led_show,
369 .em_store = ahci_led_store,
370 .sw_activity_show = ahci_activity_show,
371 .sw_activity_store = ahci_activity_store,
373 .port_suspend = ahci_port_suspend,
374 .port_resume = ahci_port_resume,
376 .port_start = ahci_port_start,
377 .port_stop = ahci_port_stop,
380 static struct ata_port_operations ahci_vt8251_ops = {
381 .inherits = &ahci_ops,
382 .hardreset = ahci_vt8251_hardreset,
385 static struct ata_port_operations ahci_p5wdh_ops = {
386 .inherits = &ahci_ops,
387 .hardreset = ahci_p5wdh_hardreset,
390 static struct ata_port_operations ahci_sb600_ops = {
391 .inherits = &ahci_ops,
392 .softreset = ahci_sb600_softreset,
393 .pmp_softreset = ahci_sb600_softreset,
396 #define AHCI_HFLAGS(flags) .private_data = (void *)(flags)
398 static const struct ata_port_info ahci_port_info[] = {
401 .flags = AHCI_FLAG_COMMON,
402 .pio_mask = 0x1f, /* pio0-4 */
403 .udma_mask = ATA_UDMA6,
404 .port_ops = &ahci_ops,
406 /* board_ahci_vt8251 */
408 AHCI_HFLAGS (AHCI_HFLAG_NO_NCQ | AHCI_HFLAG_NO_PMP),
409 .flags = AHCI_FLAG_COMMON,
410 .pio_mask = 0x1f, /* pio0-4 */
411 .udma_mask = ATA_UDMA6,
412 .port_ops = &ahci_vt8251_ops,
414 /* board_ahci_ign_iferr */
416 AHCI_HFLAGS (AHCI_HFLAG_IGN_IRQ_IF_ERR),
417 .flags = AHCI_FLAG_COMMON,
418 .pio_mask = 0x1f, /* pio0-4 */
419 .udma_mask = ATA_UDMA6,
420 .port_ops = &ahci_ops,
422 /* board_ahci_sb600 */
424 AHCI_HFLAGS (AHCI_HFLAG_IGN_SERR_INTERNAL |
425 AHCI_HFLAG_32BIT_ONLY | AHCI_HFLAG_NO_MSI |
427 .flags = AHCI_FLAG_COMMON,
428 .pio_mask = 0x1f, /* pio0-4 */
429 .udma_mask = ATA_UDMA6,
430 .port_ops = &ahci_sb600_ops,
434 AHCI_HFLAGS (AHCI_HFLAG_NO_NCQ | AHCI_HFLAG_NO_MSI |
435 AHCI_HFLAG_MV_PATA | AHCI_HFLAG_NO_PMP),
436 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
437 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
438 .pio_mask = 0x1f, /* pio0-4 */
439 .udma_mask = ATA_UDMA6,
440 .port_ops = &ahci_ops,
442 /* board_ahci_sb700 */
444 AHCI_HFLAGS (AHCI_HFLAG_IGN_SERR_INTERNAL),
445 .flags = AHCI_FLAG_COMMON,
446 .pio_mask = 0x1f, /* pio0-4 */
447 .udma_mask = ATA_UDMA6,
448 .port_ops = &ahci_sb600_ops,
450 /* board_ahci_mcp65 */
452 AHCI_HFLAGS (AHCI_HFLAG_YES_NCQ),
453 .flags = AHCI_FLAG_COMMON,
454 .pio_mask = 0x1f, /* pio0-4 */
455 .udma_mask = ATA_UDMA6,
456 .port_ops = &ahci_ops,
458 /* board_ahci_nopmp */
460 AHCI_HFLAGS (AHCI_HFLAG_NO_PMP),
461 .flags = AHCI_FLAG_COMMON,
462 .pio_mask = 0x1f, /* pio0-4 */
463 .udma_mask = ATA_UDMA6,
464 .port_ops = &ahci_ops,
468 static const struct pci_device_id ahci_pci_tbl[] = {
470 { PCI_VDEVICE(INTEL, 0x2652), board_ahci }, /* ICH6 */
471 { PCI_VDEVICE(INTEL, 0x2653), board_ahci }, /* ICH6M */
472 { PCI_VDEVICE(INTEL, 0x27c1), board_ahci }, /* ICH7 */
473 { PCI_VDEVICE(INTEL, 0x27c5), board_ahci }, /* ICH7M */
474 { PCI_VDEVICE(INTEL, 0x27c3), board_ahci }, /* ICH7R */
475 { PCI_VDEVICE(AL, 0x5288), board_ahci_ign_iferr }, /* ULi M5288 */
476 { PCI_VDEVICE(INTEL, 0x2681), board_ahci }, /* ESB2 */
477 { PCI_VDEVICE(INTEL, 0x2682), board_ahci }, /* ESB2 */
478 { PCI_VDEVICE(INTEL, 0x2683), board_ahci }, /* ESB2 */
479 { PCI_VDEVICE(INTEL, 0x27c6), board_ahci }, /* ICH7-M DH */
480 { PCI_VDEVICE(INTEL, 0x2821), board_ahci }, /* ICH8 */
481 { PCI_VDEVICE(INTEL, 0x2822), board_ahci }, /* ICH8 */
482 { PCI_VDEVICE(INTEL, 0x2824), board_ahci }, /* ICH8 */
483 { PCI_VDEVICE(INTEL, 0x2829), board_ahci }, /* ICH8M */
484 { PCI_VDEVICE(INTEL, 0x282a), board_ahci }, /* ICH8M */
485 { PCI_VDEVICE(INTEL, 0x2922), board_ahci }, /* ICH9 */
486 { PCI_VDEVICE(INTEL, 0x2923), board_ahci }, /* ICH9 */
487 { PCI_VDEVICE(INTEL, 0x2924), board_ahci }, /* ICH9 */
488 { PCI_VDEVICE(INTEL, 0x2925), board_ahci }, /* ICH9 */
489 { PCI_VDEVICE(INTEL, 0x2927), board_ahci }, /* ICH9 */
490 { PCI_VDEVICE(INTEL, 0x2929), board_ahci }, /* ICH9M */
491 { PCI_VDEVICE(INTEL, 0x292a), board_ahci }, /* ICH9M */
492 { PCI_VDEVICE(INTEL, 0x292b), board_ahci }, /* ICH9M */
493 { PCI_VDEVICE(INTEL, 0x292c), board_ahci }, /* ICH9M */
494 { PCI_VDEVICE(INTEL, 0x292f), board_ahci }, /* ICH9M */
495 { PCI_VDEVICE(INTEL, 0x294d), board_ahci }, /* ICH9 */
496 { PCI_VDEVICE(INTEL, 0x294e), board_ahci }, /* ICH9M */
497 { PCI_VDEVICE(INTEL, 0x502a), board_ahci }, /* Tolapai */
498 { PCI_VDEVICE(INTEL, 0x502b), board_ahci }, /* Tolapai */
499 { PCI_VDEVICE(INTEL, 0x3a05), board_ahci }, /* ICH10 */
500 { PCI_VDEVICE(INTEL, 0x3a25), board_ahci }, /* ICH10 */
501 { PCI_VDEVICE(INTEL, 0x3b24), board_ahci }, /* PCH RAID */
502 { PCI_VDEVICE(INTEL, 0x3b25), board_ahci }, /* PCH RAID */
503 { PCI_VDEVICE(INTEL, 0x3b2b), board_ahci }, /* PCH RAID */
504 { PCI_VDEVICE(INTEL, 0x3b2c), board_ahci }, /* PCH RAID */
506 /* JMicron 360/1/3/5/6, match class to avoid IDE function */
507 { PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
508 PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci_ign_iferr },
511 { PCI_VDEVICE(ATI, 0x4380), board_ahci_sb600 }, /* ATI SB600 */
512 { PCI_VDEVICE(ATI, 0x4390), board_ahci_sb700 }, /* ATI SB700/800 */
513 { PCI_VDEVICE(ATI, 0x4391), board_ahci_sb700 }, /* ATI SB700/800 */
514 { PCI_VDEVICE(ATI, 0x4392), board_ahci_sb700 }, /* ATI SB700/800 */
515 { PCI_VDEVICE(ATI, 0x4393), board_ahci_sb700 }, /* ATI SB700/800 */
516 { PCI_VDEVICE(ATI, 0x4394), board_ahci_sb700 }, /* ATI SB700/800 */
517 { PCI_VDEVICE(ATI, 0x4395), board_ahci_sb700 }, /* ATI SB700/800 */
520 { PCI_VDEVICE(VIA, 0x3349), board_ahci_vt8251 }, /* VIA VT8251 */
521 { PCI_VDEVICE(VIA, 0x6287), board_ahci_vt8251 }, /* VIA VT8251 */
524 { PCI_VDEVICE(NVIDIA, 0x044c), board_ahci_mcp65 }, /* MCP65 */
525 { PCI_VDEVICE(NVIDIA, 0x044d), board_ahci_mcp65 }, /* MCP65 */
526 { PCI_VDEVICE(NVIDIA, 0x044e), board_ahci_mcp65 }, /* MCP65 */
527 { PCI_VDEVICE(NVIDIA, 0x044f), board_ahci_mcp65 }, /* MCP65 */
528 { PCI_VDEVICE(NVIDIA, 0x045c), board_ahci_mcp65 }, /* MCP65 */
529 { PCI_VDEVICE(NVIDIA, 0x045d), board_ahci_mcp65 }, /* MCP65 */
530 { PCI_VDEVICE(NVIDIA, 0x045e), board_ahci_mcp65 }, /* MCP65 */
531 { PCI_VDEVICE(NVIDIA, 0x045f), board_ahci_mcp65 }, /* MCP65 */
532 { PCI_VDEVICE(NVIDIA, 0x0550), board_ahci }, /* MCP67 */
533 { PCI_VDEVICE(NVIDIA, 0x0551), board_ahci }, /* MCP67 */
534 { PCI_VDEVICE(NVIDIA, 0x0552), board_ahci }, /* MCP67 */
535 { PCI_VDEVICE(NVIDIA, 0x0553), board_ahci }, /* MCP67 */
536 { PCI_VDEVICE(NVIDIA, 0x0554), board_ahci }, /* MCP67 */
537 { PCI_VDEVICE(NVIDIA, 0x0555), board_ahci }, /* MCP67 */
538 { PCI_VDEVICE(NVIDIA, 0x0556), board_ahci }, /* MCP67 */
539 { PCI_VDEVICE(NVIDIA, 0x0557), board_ahci }, /* MCP67 */
540 { PCI_VDEVICE(NVIDIA, 0x0558), board_ahci }, /* MCP67 */
541 { PCI_VDEVICE(NVIDIA, 0x0559), board_ahci }, /* MCP67 */
542 { PCI_VDEVICE(NVIDIA, 0x055a), board_ahci }, /* MCP67 */
543 { PCI_VDEVICE(NVIDIA, 0x055b), board_ahci }, /* MCP67 */
544 { PCI_VDEVICE(NVIDIA, 0x07f0), board_ahci }, /* MCP73 */
545 { PCI_VDEVICE(NVIDIA, 0x07f1), board_ahci }, /* MCP73 */
546 { PCI_VDEVICE(NVIDIA, 0x07f2), board_ahci }, /* MCP73 */
547 { PCI_VDEVICE(NVIDIA, 0x07f3), board_ahci }, /* MCP73 */
548 { PCI_VDEVICE(NVIDIA, 0x07f4), board_ahci }, /* MCP73 */
549 { PCI_VDEVICE(NVIDIA, 0x07f5), board_ahci }, /* MCP73 */
550 { PCI_VDEVICE(NVIDIA, 0x07f6), board_ahci }, /* MCP73 */
551 { PCI_VDEVICE(NVIDIA, 0x07f7), board_ahci }, /* MCP73 */
552 { PCI_VDEVICE(NVIDIA, 0x07f8), board_ahci }, /* MCP73 */
553 { PCI_VDEVICE(NVIDIA, 0x07f9), board_ahci }, /* MCP73 */
554 { PCI_VDEVICE(NVIDIA, 0x07fa), board_ahci }, /* MCP73 */
555 { PCI_VDEVICE(NVIDIA, 0x07fb), board_ahci }, /* MCP73 */
556 { PCI_VDEVICE(NVIDIA, 0x0ad0), board_ahci }, /* MCP77 */
557 { PCI_VDEVICE(NVIDIA, 0x0ad1), board_ahci }, /* MCP77 */
558 { PCI_VDEVICE(NVIDIA, 0x0ad2), board_ahci }, /* MCP77 */
559 { PCI_VDEVICE(NVIDIA, 0x0ad3), board_ahci }, /* MCP77 */
560 { PCI_VDEVICE(NVIDIA, 0x0ad4), board_ahci }, /* MCP77 */
561 { PCI_VDEVICE(NVIDIA, 0x0ad5), board_ahci }, /* MCP77 */
562 { PCI_VDEVICE(NVIDIA, 0x0ad6), board_ahci }, /* MCP77 */
563 { PCI_VDEVICE(NVIDIA, 0x0ad7), board_ahci }, /* MCP77 */
564 { PCI_VDEVICE(NVIDIA, 0x0ad8), board_ahci }, /* MCP77 */
565 { PCI_VDEVICE(NVIDIA, 0x0ad9), board_ahci }, /* MCP77 */
566 { PCI_VDEVICE(NVIDIA, 0x0ada), board_ahci }, /* MCP77 */
567 { PCI_VDEVICE(NVIDIA, 0x0adb), board_ahci }, /* MCP77 */
568 { PCI_VDEVICE(NVIDIA, 0x0ab4), board_ahci }, /* MCP79 */
569 { PCI_VDEVICE(NVIDIA, 0x0ab5), board_ahci }, /* MCP79 */
570 { PCI_VDEVICE(NVIDIA, 0x0ab6), board_ahci }, /* MCP79 */
571 { PCI_VDEVICE(NVIDIA, 0x0ab7), board_ahci }, /* MCP79 */
572 { PCI_VDEVICE(NVIDIA, 0x0ab8), board_ahci }, /* MCP79 */
573 { PCI_VDEVICE(NVIDIA, 0x0ab9), board_ahci }, /* MCP79 */
574 { PCI_VDEVICE(NVIDIA, 0x0aba), board_ahci }, /* MCP79 */
575 { PCI_VDEVICE(NVIDIA, 0x0abb), board_ahci }, /* MCP79 */
576 { PCI_VDEVICE(NVIDIA, 0x0abc), board_ahci }, /* MCP79 */
577 { PCI_VDEVICE(NVIDIA, 0x0abd), board_ahci }, /* MCP79 */
578 { PCI_VDEVICE(NVIDIA, 0x0abe), board_ahci }, /* MCP79 */
579 { PCI_VDEVICE(NVIDIA, 0x0abf), board_ahci }, /* MCP79 */
580 { PCI_VDEVICE(NVIDIA, 0x0bc8), board_ahci }, /* MCP7B */
581 { PCI_VDEVICE(NVIDIA, 0x0bc9), board_ahci }, /* MCP7B */
582 { PCI_VDEVICE(NVIDIA, 0x0bca), board_ahci }, /* MCP7B */
583 { PCI_VDEVICE(NVIDIA, 0x0bcb), board_ahci }, /* MCP7B */
584 { PCI_VDEVICE(NVIDIA, 0x0bcc), board_ahci }, /* MCP7B */
585 { PCI_VDEVICE(NVIDIA, 0x0bcd), board_ahci }, /* MCP7B */
586 { PCI_VDEVICE(NVIDIA, 0x0bce), board_ahci }, /* MCP7B */
587 { PCI_VDEVICE(NVIDIA, 0x0bcf), board_ahci }, /* MCP7B */
588 { PCI_VDEVICE(NVIDIA, 0x0bc4), board_ahci }, /* MCP7B */
589 { PCI_VDEVICE(NVIDIA, 0x0bc5), board_ahci }, /* MCP7B */
590 { PCI_VDEVICE(NVIDIA, 0x0bc6), board_ahci }, /* MCP7B */
591 { PCI_VDEVICE(NVIDIA, 0x0bc7), board_ahci }, /* MCP7B */
594 { PCI_VDEVICE(SI, 0x1184), board_ahci }, /* SiS 966 */
595 { PCI_VDEVICE(SI, 0x1185), board_ahci }, /* SiS 968 */
596 { PCI_VDEVICE(SI, 0x0186), board_ahci }, /* SiS 968 */
599 { PCI_VDEVICE(MARVELL, 0x6145), board_ahci_mv }, /* 6145 */
600 { PCI_VDEVICE(MARVELL, 0x6121), board_ahci_mv }, /* 6121 */
603 { PCI_VDEVICE(PROMISE, 0x3f20), board_ahci }, /* PDC42819 */
605 /* Generic, PCI class code for AHCI */
606 { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
607 PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci },
609 { } /* terminate list */
613 static struct pci_driver ahci_pci_driver = {
615 .id_table = ahci_pci_tbl,
616 .probe = ahci_init_one,
617 .remove = ata_pci_remove_one,
619 .suspend = ahci_pci_device_suspend,
620 .resume = ahci_pci_device_resume,
624 static int ahci_em_messages = 1;
625 module_param(ahci_em_messages, int, 0444);
626 /* add other LED protocol types when they become supported */
627 MODULE_PARM_DESC(ahci_em_messages,
628 "Set AHCI Enclosure Management Message type (0 = disabled, 1 = LED");
630 #if defined(CONFIG_PATA_MARVELL) || defined(CONFIG_PATA_MARVELL_MODULE)
631 static int marvell_enable;
633 static int marvell_enable = 1;
635 module_param(marvell_enable, int, 0644);
636 MODULE_PARM_DESC(marvell_enable, "Marvell SATA via AHCI (1 = enabled)");
639 static inline int ahci_nr_ports(u32 cap)
641 return (cap & 0x1f) + 1;
644 static inline void __iomem *__ahci_port_base(struct ata_host *host,
645 unsigned int port_no)
647 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
649 return mmio + 0x100 + (port_no * 0x80);
652 static inline void __iomem *ahci_port_base(struct ata_port *ap)
654 return __ahci_port_base(ap->host, ap->port_no);
657 static void ahci_enable_ahci(void __iomem *mmio)
662 /* turn on AHCI_EN */
663 tmp = readl(mmio + HOST_CTL);
664 if (tmp & HOST_AHCI_EN)
667 /* Some controllers need AHCI_EN to be written multiple times.
668 * Try a few times before giving up.
670 for (i = 0; i < 5; i++) {
672 writel(tmp, mmio + HOST_CTL);
673 tmp = readl(mmio + HOST_CTL); /* flush && sanity check */
674 if (tmp & HOST_AHCI_EN)
683 * ahci_save_initial_config - Save and fixup initial config values
684 * @pdev: target PCI device
685 * @hpriv: host private area to store config values
687 * Some registers containing configuration info might be setup by
688 * BIOS and might be cleared on reset. This function saves the
689 * initial values of those registers into @hpriv such that they
690 * can be restored after controller reset.
692 * If inconsistent, config values are fixed up by this function.
697 static void ahci_save_initial_config(struct pci_dev *pdev,
698 struct ahci_host_priv *hpriv)
700 void __iomem *mmio = pcim_iomap_table(pdev)[AHCI_PCI_BAR];
705 /* make sure AHCI mode is enabled before accessing CAP */
706 ahci_enable_ahci(mmio);
708 /* Values prefixed with saved_ are written back to host after
709 * reset. Values without are used for driver operation.
711 hpriv->saved_cap = cap = readl(mmio + HOST_CAP);
712 hpriv->saved_port_map = port_map = readl(mmio + HOST_PORTS_IMPL);
714 /* some chips have errata preventing 64bit use */
715 if ((cap & HOST_CAP_64) && (hpriv->flags & AHCI_HFLAG_32BIT_ONLY)) {
716 dev_printk(KERN_INFO, &pdev->dev,
717 "controller can't do 64bit DMA, forcing 32bit\n");
721 if ((cap & HOST_CAP_NCQ) && (hpriv->flags & AHCI_HFLAG_NO_NCQ)) {
722 dev_printk(KERN_INFO, &pdev->dev,
723 "controller can't do NCQ, turning off CAP_NCQ\n");
724 cap &= ~HOST_CAP_NCQ;
727 if (!(cap & HOST_CAP_NCQ) && (hpriv->flags & AHCI_HFLAG_YES_NCQ)) {
728 dev_printk(KERN_INFO, &pdev->dev,
729 "controller can do NCQ, turning on CAP_NCQ\n");
733 if ((cap & HOST_CAP_PMP) && (hpriv->flags & AHCI_HFLAG_NO_PMP)) {
734 dev_printk(KERN_INFO, &pdev->dev,
735 "controller can't do PMP, turning off CAP_PMP\n");
736 cap &= ~HOST_CAP_PMP;
739 if (pdev->vendor == PCI_VENDOR_ID_JMICRON && pdev->device == 0x2361 &&
741 dev_printk(KERN_INFO, &pdev->dev,
742 "JMB361 has only one port, port_map 0x%x -> 0x%x\n",
748 * Temporary Marvell 6145 hack: PATA port presence
749 * is asserted through the standard AHCI port
750 * presence register, as bit 4 (counting from 0)
752 if (hpriv->flags & AHCI_HFLAG_MV_PATA) {
753 if (pdev->device == 0x6121)
757 dev_printk(KERN_ERR, &pdev->dev,
758 "MV_AHCI HACK: port_map %x -> %x\n",
761 dev_printk(KERN_ERR, &pdev->dev,
762 "Disabling your PATA port. Use the boot option 'ahci.marvell_enable=0' to avoid this.\n");
767 /* cross check port_map and cap.n_ports */
771 for (i = 0; i < AHCI_MAX_PORTS; i++)
772 if (port_map & (1 << i))
775 /* If PI has more ports than n_ports, whine, clear
776 * port_map and let it be generated from n_ports.
778 if (map_ports > ahci_nr_ports(cap)) {
779 dev_printk(KERN_WARNING, &pdev->dev,
780 "implemented port map (0x%x) contains more "
781 "ports than nr_ports (%u), using nr_ports\n",
782 port_map, ahci_nr_ports(cap));
787 /* fabricate port_map from cap.nr_ports */
789 port_map = (1 << ahci_nr_ports(cap)) - 1;
790 dev_printk(KERN_WARNING, &pdev->dev,
791 "forcing PORTS_IMPL to 0x%x\n", port_map);
793 /* write the fixed up value to the PI register */
794 hpriv->saved_port_map = port_map;
797 /* record values to use during operation */
799 hpriv->port_map = port_map;
803 * ahci_restore_initial_config - Restore initial config
804 * @host: target ATA host
806 * Restore initial config stored by ahci_save_initial_config().
811 static void ahci_restore_initial_config(struct ata_host *host)
813 struct ahci_host_priv *hpriv = host->private_data;
814 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
816 writel(hpriv->saved_cap, mmio + HOST_CAP);
817 writel(hpriv->saved_port_map, mmio + HOST_PORTS_IMPL);
818 (void) readl(mmio + HOST_PORTS_IMPL); /* flush */
821 static unsigned ahci_scr_offset(struct ata_port *ap, unsigned int sc_reg)
823 static const int offset[] = {
824 [SCR_STATUS] = PORT_SCR_STAT,
825 [SCR_CONTROL] = PORT_SCR_CTL,
826 [SCR_ERROR] = PORT_SCR_ERR,
827 [SCR_ACTIVE] = PORT_SCR_ACT,
828 [SCR_NOTIFICATION] = PORT_SCR_NTF,
830 struct ahci_host_priv *hpriv = ap->host->private_data;
832 if (sc_reg < ARRAY_SIZE(offset) &&
833 (sc_reg != SCR_NOTIFICATION || (hpriv->cap & HOST_CAP_SNTF)))
834 return offset[sc_reg];
838 static int ahci_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val)
840 void __iomem *port_mmio = ahci_port_base(link->ap);
841 int offset = ahci_scr_offset(link->ap, sc_reg);
844 *val = readl(port_mmio + offset);
850 static int ahci_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val)
852 void __iomem *port_mmio = ahci_port_base(link->ap);
853 int offset = ahci_scr_offset(link->ap, sc_reg);
856 writel(val, port_mmio + offset);
862 static void ahci_start_engine(struct ata_port *ap)
864 void __iomem *port_mmio = ahci_port_base(ap);
868 tmp = readl(port_mmio + PORT_CMD);
869 tmp |= PORT_CMD_START;
870 writel(tmp, port_mmio + PORT_CMD);
871 readl(port_mmio + PORT_CMD); /* flush */
874 static int ahci_stop_engine(struct ata_port *ap)
876 void __iomem *port_mmio = ahci_port_base(ap);
879 tmp = readl(port_mmio + PORT_CMD);
881 /* check if the HBA is idle */
882 if ((tmp & (PORT_CMD_START | PORT_CMD_LIST_ON)) == 0)
885 /* setting HBA to idle */
886 tmp &= ~PORT_CMD_START;
887 writel(tmp, port_mmio + PORT_CMD);
889 /* wait for engine to stop. This could be as long as 500 msec */
890 tmp = ata_wait_register(port_mmio + PORT_CMD,
891 PORT_CMD_LIST_ON, PORT_CMD_LIST_ON, 1, 500);
892 if (tmp & PORT_CMD_LIST_ON)
898 static void ahci_start_fis_rx(struct ata_port *ap)
900 void __iomem *port_mmio = ahci_port_base(ap);
901 struct ahci_host_priv *hpriv = ap->host->private_data;
902 struct ahci_port_priv *pp = ap->private_data;
905 /* set FIS registers */
906 if (hpriv->cap & HOST_CAP_64)
907 writel((pp->cmd_slot_dma >> 16) >> 16,
908 port_mmio + PORT_LST_ADDR_HI);
909 writel(pp->cmd_slot_dma & 0xffffffff, port_mmio + PORT_LST_ADDR);
911 if (hpriv->cap & HOST_CAP_64)
912 writel((pp->rx_fis_dma >> 16) >> 16,
913 port_mmio + PORT_FIS_ADDR_HI);
914 writel(pp->rx_fis_dma & 0xffffffff, port_mmio + PORT_FIS_ADDR);
916 /* enable FIS reception */
917 tmp = readl(port_mmio + PORT_CMD);
918 tmp |= PORT_CMD_FIS_RX;
919 writel(tmp, port_mmio + PORT_CMD);
922 readl(port_mmio + PORT_CMD);
925 static int ahci_stop_fis_rx(struct ata_port *ap)
927 void __iomem *port_mmio = ahci_port_base(ap);
930 /* disable FIS reception */
931 tmp = readl(port_mmio + PORT_CMD);
932 tmp &= ~PORT_CMD_FIS_RX;
933 writel(tmp, port_mmio + PORT_CMD);
935 /* wait for completion, spec says 500ms, give it 1000 */
936 tmp = ata_wait_register(port_mmio + PORT_CMD, PORT_CMD_FIS_ON,
937 PORT_CMD_FIS_ON, 10, 1000);
938 if (tmp & PORT_CMD_FIS_ON)
944 static void ahci_power_up(struct ata_port *ap)
946 struct ahci_host_priv *hpriv = ap->host->private_data;
947 void __iomem *port_mmio = ahci_port_base(ap);
950 cmd = readl(port_mmio + PORT_CMD) & ~PORT_CMD_ICC_MASK;
953 if (hpriv->cap & HOST_CAP_SSS) {
954 cmd |= PORT_CMD_SPIN_UP;
955 writel(cmd, port_mmio + PORT_CMD);
959 writel(cmd | PORT_CMD_ICC_ACTIVE, port_mmio + PORT_CMD);
962 static void ahci_disable_alpm(struct ata_port *ap)
964 struct ahci_host_priv *hpriv = ap->host->private_data;
965 void __iomem *port_mmio = ahci_port_base(ap);
967 struct ahci_port_priv *pp = ap->private_data;
969 /* IPM bits should be disabled by libata-core */
970 /* get the existing command bits */
971 cmd = readl(port_mmio + PORT_CMD);
973 /* disable ALPM and ASP */
974 cmd &= ~PORT_CMD_ASP;
975 cmd &= ~PORT_CMD_ALPE;
977 /* force the interface back to active */
978 cmd |= PORT_CMD_ICC_ACTIVE;
980 /* write out new cmd value */
981 writel(cmd, port_mmio + PORT_CMD);
982 cmd = readl(port_mmio + PORT_CMD);
984 /* wait 10ms to be sure we've come out of any low power state */
987 /* clear out any PhyRdy stuff from interrupt status */
988 writel(PORT_IRQ_PHYRDY, port_mmio + PORT_IRQ_STAT);
990 /* go ahead and clean out PhyRdy Change from Serror too */
991 ahci_scr_write(&ap->link, SCR_ERROR, ((1 << 16) | (1 << 18)));
994 * Clear flag to indicate that we should ignore all PhyRdy
997 hpriv->flags &= ~AHCI_HFLAG_NO_HOTPLUG;
1000 * Enable interrupts on Phy Ready.
1002 pp->intr_mask |= PORT_IRQ_PHYRDY;
1003 writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
1006 * don't change the link pm policy - we can be called
1007 * just to turn of link pm temporarily
1011 static int ahci_enable_alpm(struct ata_port *ap,
1012 enum link_pm policy)
1014 struct ahci_host_priv *hpriv = ap->host->private_data;
1015 void __iomem *port_mmio = ahci_port_base(ap);
1017 struct ahci_port_priv *pp = ap->private_data;
1020 /* Make sure the host is capable of link power management */
1021 if (!(hpriv->cap & HOST_CAP_ALPM))
1025 case MAX_PERFORMANCE:
1028 * if we came here with NOT_AVAILABLE,
1029 * it just means this is the first time we
1030 * have tried to enable - default to max performance,
1031 * and let the user go to lower power modes on request.
1033 ahci_disable_alpm(ap);
1036 /* configure HBA to enter SLUMBER */
1040 /* configure HBA to enter PARTIAL */
1048 * Disable interrupts on Phy Ready. This keeps us from
1049 * getting woken up due to spurious phy ready interrupts
1050 * TBD - Hot plug should be done via polling now, is
1051 * that even supported?
1053 pp->intr_mask &= ~PORT_IRQ_PHYRDY;
1054 writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
1057 * Set a flag to indicate that we should ignore all PhyRdy
1058 * state changes since these can happen now whenever we
1061 hpriv->flags |= AHCI_HFLAG_NO_HOTPLUG;
1063 /* get the existing command bits */
1064 cmd = readl(port_mmio + PORT_CMD);
1067 * Set ASP based on Policy
1072 * Setting this bit will instruct the HBA to aggressively
1073 * enter a lower power link state when it's appropriate and
1074 * based on the value set above for ASP
1076 cmd |= PORT_CMD_ALPE;
1078 /* write out new cmd value */
1079 writel(cmd, port_mmio + PORT_CMD);
1080 cmd = readl(port_mmio + PORT_CMD);
1082 /* IPM bits should be set by libata-core */
1087 static void ahci_power_down(struct ata_port *ap)
1089 struct ahci_host_priv *hpriv = ap->host->private_data;
1090 void __iomem *port_mmio = ahci_port_base(ap);
1093 if (!(hpriv->cap & HOST_CAP_SSS))
1096 /* put device into listen mode, first set PxSCTL.DET to 0 */
1097 scontrol = readl(port_mmio + PORT_SCR_CTL);
1099 writel(scontrol, port_mmio + PORT_SCR_CTL);
1101 /* then set PxCMD.SUD to 0 */
1102 cmd = readl(port_mmio + PORT_CMD) & ~PORT_CMD_ICC_MASK;
1103 cmd &= ~PORT_CMD_SPIN_UP;
1104 writel(cmd, port_mmio + PORT_CMD);
1108 static void ahci_start_port(struct ata_port *ap)
1110 struct ahci_port_priv *pp = ap->private_data;
1111 struct ata_link *link;
1112 struct ahci_em_priv *emp;
1114 /* enable FIS reception */
1115 ahci_start_fis_rx(ap);
1118 ahci_start_engine(ap);
1121 if (ap->flags & ATA_FLAG_EM) {
1122 ata_for_each_link(link, ap, EDGE) {
1123 emp = &pp->em_priv[link->pmp];
1124 ahci_transmit_led_message(ap, emp->led_state, 4);
1128 if (ap->flags & ATA_FLAG_SW_ACTIVITY)
1129 ata_for_each_link(link, ap, EDGE)
1130 ahci_init_sw_activity(link);
1134 static int ahci_deinit_port(struct ata_port *ap, const char **emsg)
1139 rc = ahci_stop_engine(ap);
1141 *emsg = "failed to stop engine";
1145 /* disable FIS reception */
1146 rc = ahci_stop_fis_rx(ap);
1148 *emsg = "failed stop FIS RX";
1155 static int ahci_reset_controller(struct ata_host *host)
1157 struct pci_dev *pdev = to_pci_dev(host->dev);
1158 struct ahci_host_priv *hpriv = host->private_data;
1159 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
1162 /* we must be in AHCI mode, before using anything
1163 * AHCI-specific, such as HOST_RESET.
1165 ahci_enable_ahci(mmio);
1167 /* global controller reset */
1168 if (!ahci_skip_host_reset) {
1169 tmp = readl(mmio + HOST_CTL);
1170 if ((tmp & HOST_RESET) == 0) {
1171 writel(tmp | HOST_RESET, mmio + HOST_CTL);
1172 readl(mmio + HOST_CTL); /* flush */
1176 * to perform host reset, OS should set HOST_RESET
1177 * and poll until this bit is read to be "0".
1178 * reset must complete within 1 second, or
1179 * the hardware should be considered fried.
1181 tmp = ata_wait_register(mmio + HOST_CTL, HOST_RESET,
1182 HOST_RESET, 10, 1000);
1184 if (tmp & HOST_RESET) {
1185 dev_printk(KERN_ERR, host->dev,
1186 "controller reset failed (0x%x)\n", tmp);
1190 /* turn on AHCI mode */
1191 ahci_enable_ahci(mmio);
1193 /* Some registers might be cleared on reset. Restore
1196 ahci_restore_initial_config(host);
1198 dev_printk(KERN_INFO, host->dev,
1199 "skipping global host reset\n");
1201 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
1205 pci_read_config_word(pdev, 0x92, &tmp16);
1206 if ((tmp16 & hpriv->port_map) != hpriv->port_map) {
1207 tmp16 |= hpriv->port_map;
1208 pci_write_config_word(pdev, 0x92, tmp16);
1215 static void ahci_sw_activity(struct ata_link *link)
1217 struct ata_port *ap = link->ap;
1218 struct ahci_port_priv *pp = ap->private_data;
1219 struct ahci_em_priv *emp = &pp->em_priv[link->pmp];
1221 if (!(link->flags & ATA_LFLAG_SW_ACTIVITY))
1225 if (!timer_pending(&emp->timer))
1226 mod_timer(&emp->timer, jiffies + msecs_to_jiffies(10));
1229 static void ahci_sw_activity_blink(unsigned long arg)
1231 struct ata_link *link = (struct ata_link *)arg;
1232 struct ata_port *ap = link->ap;
1233 struct ahci_port_priv *pp = ap->private_data;
1234 struct ahci_em_priv *emp = &pp->em_priv[link->pmp];
1235 unsigned long led_message = emp->led_state;
1236 u32 activity_led_state;
1237 unsigned long flags;
1239 led_message &= EM_MSG_LED_VALUE;
1240 led_message |= ap->port_no | (link->pmp << 8);
1242 /* check to see if we've had activity. If so,
1243 * toggle state of LED and reset timer. If not,
1244 * turn LED to desired idle state.
1246 spin_lock_irqsave(ap->lock, flags);
1247 if (emp->saved_activity != emp->activity) {
1248 emp->saved_activity = emp->activity;
1249 /* get the current LED state */
1250 activity_led_state = led_message & EM_MSG_LED_VALUE_ON;
1252 if (activity_led_state)
1253 activity_led_state = 0;
1255 activity_led_state = 1;
1257 /* clear old state */
1258 led_message &= ~EM_MSG_LED_VALUE_ACTIVITY;
1261 led_message |= (activity_led_state << 16);
1262 mod_timer(&emp->timer, jiffies + msecs_to_jiffies(100));
1264 /* switch to idle */
1265 led_message &= ~EM_MSG_LED_VALUE_ACTIVITY;
1266 if (emp->blink_policy == BLINK_OFF)
1267 led_message |= (1 << 16);
1269 spin_unlock_irqrestore(ap->lock, flags);
1270 ahci_transmit_led_message(ap, led_message, 4);
1273 static void ahci_init_sw_activity(struct ata_link *link)
1275 struct ata_port *ap = link->ap;
1276 struct ahci_port_priv *pp = ap->private_data;
1277 struct ahci_em_priv *emp = &pp->em_priv[link->pmp];
1279 /* init activity stats, setup timer */
1280 emp->saved_activity = emp->activity = 0;
1281 setup_timer(&emp->timer, ahci_sw_activity_blink, (unsigned long)link);
1283 /* check our blink policy and set flag for link if it's enabled */
1284 if (emp->blink_policy)
1285 link->flags |= ATA_LFLAG_SW_ACTIVITY;
1288 static int ahci_reset_em(struct ata_host *host)
1290 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
1293 em_ctl = readl(mmio + HOST_EM_CTL);
1294 if ((em_ctl & EM_CTL_TM) || (em_ctl & EM_CTL_RST))
1297 writel(em_ctl | EM_CTL_RST, mmio + HOST_EM_CTL);
1301 static ssize_t ahci_transmit_led_message(struct ata_port *ap, u32 state,
1304 struct ahci_host_priv *hpriv = ap->host->private_data;
1305 struct ahci_port_priv *pp = ap->private_data;
1306 void __iomem *mmio = ap->host->iomap[AHCI_PCI_BAR];
1308 u32 message[] = {0, 0};
1309 unsigned long flags;
1311 struct ahci_em_priv *emp;
1313 /* get the slot number from the message */
1314 pmp = (state & EM_MSG_LED_PMP_SLOT) >> 8;
1315 if (pmp < MAX_SLOTS)
1316 emp = &pp->em_priv[pmp];
1320 spin_lock_irqsave(ap->lock, flags);
1323 * if we are still busy transmitting a previous message,
1326 em_ctl = readl(mmio + HOST_EM_CTL);
1327 if (em_ctl & EM_CTL_TM) {
1328 spin_unlock_irqrestore(ap->lock, flags);
1333 * create message header - this is all zero except for
1334 * the message size, which is 4 bytes.
1336 message[0] |= (4 << 8);
1338 /* ignore 0:4 of byte zero, fill in port info yourself */
1339 message[1] = ((state & ~EM_MSG_LED_HBA_PORT) | ap->port_no);
1341 /* write message to EM_LOC */
1342 writel(message[0], mmio + hpriv->em_loc);
1343 writel(message[1], mmio + hpriv->em_loc+4);
1345 /* save off new led state for port/slot */
1346 emp->led_state = message[1];
1349 * tell hardware to transmit the message
1351 writel(em_ctl | EM_CTL_TM, mmio + HOST_EM_CTL);
1353 spin_unlock_irqrestore(ap->lock, flags);
1357 static ssize_t ahci_led_show(struct ata_port *ap, char *buf)
1359 struct ahci_port_priv *pp = ap->private_data;
1360 struct ata_link *link;
1361 struct ahci_em_priv *emp;
1364 ata_for_each_link(link, ap, EDGE) {
1365 emp = &pp->em_priv[link->pmp];
1366 rc += sprintf(buf, "%lx\n", emp->led_state);
1371 static ssize_t ahci_led_store(struct ata_port *ap, const char *buf,
1376 struct ahci_port_priv *pp = ap->private_data;
1377 struct ahci_em_priv *emp;
1379 state = simple_strtoul(buf, NULL, 0);
1381 /* get the slot number from the message */
1382 pmp = (state & EM_MSG_LED_PMP_SLOT) >> 8;
1383 if (pmp < MAX_SLOTS)
1384 emp = &pp->em_priv[pmp];
1388 /* mask off the activity bits if we are in sw_activity
1389 * mode, user should turn off sw_activity before setting
1390 * activity led through em_message
1392 if (emp->blink_policy)
1393 state &= ~EM_MSG_LED_VALUE_ACTIVITY;
1395 return ahci_transmit_led_message(ap, state, size);
1398 static ssize_t ahci_activity_store(struct ata_device *dev, enum sw_activity val)
1400 struct ata_link *link = dev->link;
1401 struct ata_port *ap = link->ap;
1402 struct ahci_port_priv *pp = ap->private_data;
1403 struct ahci_em_priv *emp = &pp->em_priv[link->pmp];
1404 u32 port_led_state = emp->led_state;
1406 /* save the desired Activity LED behavior */
1409 link->flags &= ~(ATA_LFLAG_SW_ACTIVITY);
1411 /* set the LED to OFF */
1412 port_led_state &= EM_MSG_LED_VALUE_OFF;
1413 port_led_state |= (ap->port_no | (link->pmp << 8));
1414 ahci_transmit_led_message(ap, port_led_state, 4);
1416 link->flags |= ATA_LFLAG_SW_ACTIVITY;
1417 if (val == BLINK_OFF) {
1418 /* set LED to ON for idle */
1419 port_led_state &= EM_MSG_LED_VALUE_OFF;
1420 port_led_state |= (ap->port_no | (link->pmp << 8));
1421 port_led_state |= EM_MSG_LED_VALUE_ON; /* check this */
1422 ahci_transmit_led_message(ap, port_led_state, 4);
1425 emp->blink_policy = val;
1429 static ssize_t ahci_activity_show(struct ata_device *dev, char *buf)
1431 struct ata_link *link = dev->link;
1432 struct ata_port *ap = link->ap;
1433 struct ahci_port_priv *pp = ap->private_data;
1434 struct ahci_em_priv *emp = &pp->em_priv[link->pmp];
1436 /* display the saved value of activity behavior for this
1439 return sprintf(buf, "%d\n", emp->blink_policy);
1442 static void ahci_port_init(struct pci_dev *pdev, struct ata_port *ap,
1443 int port_no, void __iomem *mmio,
1444 void __iomem *port_mmio)
1446 const char *emsg = NULL;
1450 /* make sure port is not active */
1451 rc = ahci_deinit_port(ap, &emsg);
1453 dev_printk(KERN_WARNING, &pdev->dev,
1454 "%s (%d)\n", emsg, rc);
1457 tmp = readl(port_mmio + PORT_SCR_ERR);
1458 VPRINTK("PORT_SCR_ERR 0x%x\n", tmp);
1459 writel(tmp, port_mmio + PORT_SCR_ERR);
1461 /* clear port IRQ */
1462 tmp = readl(port_mmio + PORT_IRQ_STAT);
1463 VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp);
1465 writel(tmp, port_mmio + PORT_IRQ_STAT);
1467 writel(1 << port_no, mmio + HOST_IRQ_STAT);
1470 static void ahci_init_controller(struct ata_host *host)
1472 struct ahci_host_priv *hpriv = host->private_data;
1473 struct pci_dev *pdev = to_pci_dev(host->dev);
1474 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
1476 void __iomem *port_mmio;
1480 if (hpriv->flags & AHCI_HFLAG_MV_PATA) {
1481 if (pdev->device == 0x6121)
1485 port_mmio = __ahci_port_base(host, mv);
1487 writel(0, port_mmio + PORT_IRQ_MASK);
1489 /* clear port IRQ */
1490 tmp = readl(port_mmio + PORT_IRQ_STAT);
1491 VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp);
1493 writel(tmp, port_mmio + PORT_IRQ_STAT);
1496 for (i = 0; i < host->n_ports; i++) {
1497 struct ata_port *ap = host->ports[i];
1499 port_mmio = ahci_port_base(ap);
1500 if (ata_port_is_dummy(ap))
1503 ahci_port_init(pdev, ap, i, mmio, port_mmio);
1506 tmp = readl(mmio + HOST_CTL);
1507 VPRINTK("HOST_CTL 0x%x\n", tmp);
1508 writel(tmp | HOST_IRQ_EN, mmio + HOST_CTL);
1509 tmp = readl(mmio + HOST_CTL);
1510 VPRINTK("HOST_CTL 0x%x\n", tmp);
1513 static void ahci_dev_config(struct ata_device *dev)
1515 struct ahci_host_priv *hpriv = dev->link->ap->host->private_data;
1517 if (hpriv->flags & AHCI_HFLAG_SECT255) {
1518 dev->max_sectors = 255;
1519 ata_dev_printk(dev, KERN_INFO,
1520 "SB600 AHCI: limiting to 255 sectors per cmd\n");
1524 static unsigned int ahci_dev_classify(struct ata_port *ap)
1526 void __iomem *port_mmio = ahci_port_base(ap);
1527 struct ata_taskfile tf;
1530 tmp = readl(port_mmio + PORT_SIG);
1531 tf.lbah = (tmp >> 24) & 0xff;
1532 tf.lbam = (tmp >> 16) & 0xff;
1533 tf.lbal = (tmp >> 8) & 0xff;
1534 tf.nsect = (tmp) & 0xff;
1536 return ata_dev_classify(&tf);
1539 static void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag,
1542 dma_addr_t cmd_tbl_dma;
1544 cmd_tbl_dma = pp->cmd_tbl_dma + tag * AHCI_CMD_TBL_SZ;
1546 pp->cmd_slot[tag].opts = cpu_to_le32(opts);
1547 pp->cmd_slot[tag].status = 0;
1548 pp->cmd_slot[tag].tbl_addr = cpu_to_le32(cmd_tbl_dma & 0xffffffff);
1549 pp->cmd_slot[tag].tbl_addr_hi = cpu_to_le32((cmd_tbl_dma >> 16) >> 16);
1552 static int ahci_kick_engine(struct ata_port *ap, int force_restart)
1554 void __iomem *port_mmio = ahci_port_base(ap);
1555 struct ahci_host_priv *hpriv = ap->host->private_data;
1556 u8 status = readl(port_mmio + PORT_TFDATA) & 0xFF;
1560 /* do we need to kick the port? */
1561 busy = status & (ATA_BUSY | ATA_DRQ);
1562 if (!busy && !force_restart)
1566 rc = ahci_stop_engine(ap);
1570 /* need to do CLO? */
1576 if (!(hpriv->cap & HOST_CAP_CLO)) {
1582 tmp = readl(port_mmio + PORT_CMD);
1583 tmp |= PORT_CMD_CLO;
1584 writel(tmp, port_mmio + PORT_CMD);
1587 tmp = ata_wait_register(port_mmio + PORT_CMD,
1588 PORT_CMD_CLO, PORT_CMD_CLO, 1, 500);
1589 if (tmp & PORT_CMD_CLO)
1592 /* restart engine */
1594 ahci_start_engine(ap);
1598 static int ahci_exec_polled_cmd(struct ata_port *ap, int pmp,
1599 struct ata_taskfile *tf, int is_cmd, u16 flags,
1600 unsigned long timeout_msec)
1602 const u32 cmd_fis_len = 5; /* five dwords */
1603 struct ahci_port_priv *pp = ap->private_data;
1604 void __iomem *port_mmio = ahci_port_base(ap);
1605 u8 *fis = pp->cmd_tbl;
1608 /* prep the command */
1609 ata_tf_to_fis(tf, pmp, is_cmd, fis);
1610 ahci_fill_cmd_slot(pp, 0, cmd_fis_len | flags | (pmp << 12));
1613 writel(1, port_mmio + PORT_CMD_ISSUE);
1616 tmp = ata_wait_register(port_mmio + PORT_CMD_ISSUE, 0x1, 0x1,
1619 ahci_kick_engine(ap, 1);
1623 readl(port_mmio + PORT_CMD_ISSUE); /* flush */
1628 static int ahci_do_softreset(struct ata_link *link, unsigned int *class,
1629 int pmp, unsigned long deadline,
1630 int (*check_ready)(struct ata_link *link))
1632 struct ata_port *ap = link->ap;
1633 const char *reason = NULL;
1634 unsigned long now, msecs;
1635 struct ata_taskfile tf;
1640 /* prepare for SRST (AHCI-1.1 10.4.1) */
1641 rc = ahci_kick_engine(ap, 1);
1642 if (rc && rc != -EOPNOTSUPP)
1643 ata_link_printk(link, KERN_WARNING,
1644 "failed to reset engine (errno=%d)\n", rc);
1646 ata_tf_init(link->device, &tf);
1648 /* issue the first D2H Register FIS */
1651 if (time_after(now, deadline))
1652 msecs = jiffies_to_msecs(deadline - now);
1655 if (ahci_exec_polled_cmd(ap, pmp, &tf, 0,
1656 AHCI_CMD_RESET | AHCI_CMD_CLR_BUSY, msecs)) {
1658 reason = "1st FIS failed";
1662 /* spec says at least 5us, but be generous and sleep for 1ms */
1665 /* issue the second D2H Register FIS */
1666 tf.ctl &= ~ATA_SRST;
1667 ahci_exec_polled_cmd(ap, pmp, &tf, 0, 0, 0);
1669 /* wait for link to become ready */
1670 rc = ata_wait_after_reset(link, deadline, check_ready);
1671 /* link occupied, -ENODEV too is an error */
1673 reason = "device not ready";
1676 *class = ahci_dev_classify(ap);
1678 DPRINTK("EXIT, class=%u\n", *class);
1682 ata_link_printk(link, KERN_ERR, "softreset failed (%s)\n", reason);
1686 static int ahci_check_ready(struct ata_link *link)
1688 void __iomem *port_mmio = ahci_port_base(link->ap);
1689 u8 status = readl(port_mmio + PORT_TFDATA) & 0xFF;
1691 return ata_check_ready(status);
1694 static int ahci_softreset(struct ata_link *link, unsigned int *class,
1695 unsigned long deadline)
1697 int pmp = sata_srst_pmp(link);
1701 return ahci_do_softreset(link, class, pmp, deadline, ahci_check_ready);
1704 static int ahci_sb600_check_ready(struct ata_link *link)
1706 void __iomem *port_mmio = ahci_port_base(link->ap);
1707 u8 status = readl(port_mmio + PORT_TFDATA) & 0xFF;
1708 u32 irq_status = readl(port_mmio + PORT_IRQ_STAT);
1711 * There is no need to check TFDATA if BAD PMP is found due to HW bug,
1712 * which can save timeout delay.
1714 if (irq_status & PORT_IRQ_BAD_PMP)
1717 return ata_check_ready(status);
1720 static int ahci_sb600_softreset(struct ata_link *link, unsigned int *class,
1721 unsigned long deadline)
1723 struct ata_port *ap = link->ap;
1724 void __iomem *port_mmio = ahci_port_base(ap);
1725 int pmp = sata_srst_pmp(link);
1731 rc = ahci_do_softreset(link, class, pmp, deadline,
1732 ahci_sb600_check_ready);
1735 * Soft reset fails on some ATI chips with IPMS set when PMP
1736 * is enabled but SATA HDD/ODD is connected to SATA port,
1737 * do soft reset again to port 0.
1740 irq_sts = readl(port_mmio + PORT_IRQ_STAT);
1741 if (irq_sts & PORT_IRQ_BAD_PMP) {
1742 ata_link_printk(link, KERN_WARNING,
1743 "failed due to HW bug, retry pmp=0\n");
1744 rc = ahci_do_softreset(link, class, 0, deadline,
1752 static int ahci_hardreset(struct ata_link *link, unsigned int *class,
1753 unsigned long deadline)
1755 const unsigned long *timing = sata_ehc_deb_timing(&link->eh_context);
1756 struct ata_port *ap = link->ap;
1757 struct ahci_port_priv *pp = ap->private_data;
1758 u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
1759 struct ata_taskfile tf;
1765 ahci_stop_engine(ap);
1767 /* clear D2H reception area to properly wait for D2H FIS */
1768 ata_tf_init(link->device, &tf);
1770 ata_tf_to_fis(&tf, 0, 0, d2h_fis);
1772 rc = sata_link_hardreset(link, timing, deadline, &online,
1775 ahci_start_engine(ap);
1778 *class = ahci_dev_classify(ap);
1780 DPRINTK("EXIT, rc=%d, class=%u\n", rc, *class);
1784 static int ahci_vt8251_hardreset(struct ata_link *link, unsigned int *class,
1785 unsigned long deadline)
1787 struct ata_port *ap = link->ap;
1793 ahci_stop_engine(ap);
1795 rc = sata_link_hardreset(link, sata_ehc_deb_timing(&link->eh_context),
1796 deadline, &online, NULL);
1798 ahci_start_engine(ap);
1800 DPRINTK("EXIT, rc=%d, class=%u\n", rc, *class);
1802 /* vt8251 doesn't clear BSY on signature FIS reception,
1803 * request follow-up softreset.
1805 return online ? -EAGAIN : rc;
1808 static int ahci_p5wdh_hardreset(struct ata_link *link, unsigned int *class,
1809 unsigned long deadline)
1811 struct ata_port *ap = link->ap;
1812 struct ahci_port_priv *pp = ap->private_data;
1813 u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
1814 struct ata_taskfile tf;
1818 ahci_stop_engine(ap);
1820 /* clear D2H reception area to properly wait for D2H FIS */
1821 ata_tf_init(link->device, &tf);
1823 ata_tf_to_fis(&tf, 0, 0, d2h_fis);
1825 rc = sata_link_hardreset(link, sata_ehc_deb_timing(&link->eh_context),
1826 deadline, &online, NULL);
1828 ahci_start_engine(ap);
1830 /* The pseudo configuration device on SIMG4726 attached to
1831 * ASUS P5W-DH Deluxe doesn't send signature FIS after
1832 * hardreset if no device is attached to the first downstream
1833 * port && the pseudo device locks up on SRST w/ PMP==0. To
1834 * work around this, wait for !BSY only briefly. If BSY isn't
1835 * cleared, perform CLO and proceed to IDENTIFY (achieved by
1836 * ATA_LFLAG_NO_SRST and ATA_LFLAG_ASSUME_ATA).
1838 * Wait for two seconds. Devices attached to downstream port
1839 * which can't process the following IDENTIFY after this will
1840 * have to be reset again. For most cases, this should
1841 * suffice while making probing snappish enough.
1844 rc = ata_wait_after_reset(link, jiffies + 2 * HZ,
1847 ahci_kick_engine(ap, 0);
1852 static void ahci_postreset(struct ata_link *link, unsigned int *class)
1854 struct ata_port *ap = link->ap;
1855 void __iomem *port_mmio = ahci_port_base(ap);
1858 ata_std_postreset(link, class);
1860 /* Make sure port's ATAPI bit is set appropriately */
1861 new_tmp = tmp = readl(port_mmio + PORT_CMD);
1862 if (*class == ATA_DEV_ATAPI)
1863 new_tmp |= PORT_CMD_ATAPI;
1865 new_tmp &= ~PORT_CMD_ATAPI;
1866 if (new_tmp != tmp) {
1867 writel(new_tmp, port_mmio + PORT_CMD);
1868 readl(port_mmio + PORT_CMD); /* flush */
1872 static unsigned int ahci_fill_sg(struct ata_queued_cmd *qc, void *cmd_tbl)
1874 struct scatterlist *sg;
1875 struct ahci_sg *ahci_sg = cmd_tbl + AHCI_CMD_TBL_HDR_SZ;
1881 * Next, the S/G list.
1883 for_each_sg(qc->sg, sg, qc->n_elem, si) {
1884 dma_addr_t addr = sg_dma_address(sg);
1885 u32 sg_len = sg_dma_len(sg);
1887 ahci_sg[si].addr = cpu_to_le32(addr & 0xffffffff);
1888 ahci_sg[si].addr_hi = cpu_to_le32((addr >> 16) >> 16);
1889 ahci_sg[si].flags_size = cpu_to_le32(sg_len - 1);
1895 static void ahci_qc_prep(struct ata_queued_cmd *qc)
1897 struct ata_port *ap = qc->ap;
1898 struct ahci_port_priv *pp = ap->private_data;
1899 int is_atapi = ata_is_atapi(qc->tf.protocol);
1902 const u32 cmd_fis_len = 5; /* five dwords */
1903 unsigned int n_elem;
1906 * Fill in command table information. First, the header,
1907 * a SATA Register - Host to Device command FIS.
1909 cmd_tbl = pp->cmd_tbl + qc->tag * AHCI_CMD_TBL_SZ;
1911 ata_tf_to_fis(&qc->tf, qc->dev->link->pmp, 1, cmd_tbl);
1913 memset(cmd_tbl + AHCI_CMD_TBL_CDB, 0, 32);
1914 memcpy(cmd_tbl + AHCI_CMD_TBL_CDB, qc->cdb, qc->dev->cdb_len);
1918 if (qc->flags & ATA_QCFLAG_DMAMAP)
1919 n_elem = ahci_fill_sg(qc, cmd_tbl);
1922 * Fill in command slot information.
1924 opts = cmd_fis_len | n_elem << 16 | (qc->dev->link->pmp << 12);
1925 if (qc->tf.flags & ATA_TFLAG_WRITE)
1926 opts |= AHCI_CMD_WRITE;
1928 opts |= AHCI_CMD_ATAPI | AHCI_CMD_PREFETCH;
1930 ahci_fill_cmd_slot(pp, qc->tag, opts);
1933 static void ahci_error_intr(struct ata_port *ap, u32 irq_stat)
1935 struct ahci_host_priv *hpriv = ap->host->private_data;
1936 struct ahci_port_priv *pp = ap->private_data;
1937 struct ata_eh_info *host_ehi = &ap->link.eh_info;
1938 struct ata_link *link = NULL;
1939 struct ata_queued_cmd *active_qc;
1940 struct ata_eh_info *active_ehi;
1943 /* determine active link */
1944 ata_for_each_link(link, ap, EDGE)
1945 if (ata_link_active(link))
1950 active_qc = ata_qc_from_tag(ap, link->active_tag);
1951 active_ehi = &link->eh_info;
1953 /* record irq stat */
1954 ata_ehi_clear_desc(host_ehi);
1955 ata_ehi_push_desc(host_ehi, "irq_stat 0x%08x", irq_stat);
1957 /* AHCI needs SError cleared; otherwise, it might lock up */
1958 ahci_scr_read(&ap->link, SCR_ERROR, &serror);
1959 ahci_scr_write(&ap->link, SCR_ERROR, serror);
1960 host_ehi->serror |= serror;
1962 /* some controllers set IRQ_IF_ERR on device errors, ignore it */
1963 if (hpriv->flags & AHCI_HFLAG_IGN_IRQ_IF_ERR)
1964 irq_stat &= ~PORT_IRQ_IF_ERR;
1966 if (irq_stat & PORT_IRQ_TF_ERR) {
1967 /* If qc is active, charge it; otherwise, the active
1968 * link. There's no active qc on NCQ errors. It will
1969 * be determined by EH by reading log page 10h.
1972 active_qc->err_mask |= AC_ERR_DEV;
1974 active_ehi->err_mask |= AC_ERR_DEV;
1976 if (hpriv->flags & AHCI_HFLAG_IGN_SERR_INTERNAL)
1977 host_ehi->serror &= ~SERR_INTERNAL;
1980 if (irq_stat & PORT_IRQ_UNK_FIS) {
1981 u32 *unk = (u32 *)(pp->rx_fis + RX_FIS_UNK);
1983 active_ehi->err_mask |= AC_ERR_HSM;
1984 active_ehi->action |= ATA_EH_RESET;
1985 ata_ehi_push_desc(active_ehi,
1986 "unknown FIS %08x %08x %08x %08x" ,
1987 unk[0], unk[1], unk[2], unk[3]);
1990 if (sata_pmp_attached(ap) && (irq_stat & PORT_IRQ_BAD_PMP)) {
1991 active_ehi->err_mask |= AC_ERR_HSM;
1992 active_ehi->action |= ATA_EH_RESET;
1993 ata_ehi_push_desc(active_ehi, "incorrect PMP");
1996 if (irq_stat & (PORT_IRQ_HBUS_ERR | PORT_IRQ_HBUS_DATA_ERR)) {
1997 host_ehi->err_mask |= AC_ERR_HOST_BUS;
1998 host_ehi->action |= ATA_EH_RESET;
1999 ata_ehi_push_desc(host_ehi, "host bus error");
2002 if (irq_stat & PORT_IRQ_IF_ERR) {
2003 host_ehi->err_mask |= AC_ERR_ATA_BUS;
2004 host_ehi->action |= ATA_EH_RESET;
2005 ata_ehi_push_desc(host_ehi, "interface fatal error");
2008 if (irq_stat & (PORT_IRQ_CONNECT | PORT_IRQ_PHYRDY)) {
2009 ata_ehi_hotplugged(host_ehi);
2010 ata_ehi_push_desc(host_ehi, "%s",
2011 irq_stat & PORT_IRQ_CONNECT ?
2012 "connection status changed" : "PHY RDY changed");
2015 /* okay, let's hand over to EH */
2017 if (irq_stat & PORT_IRQ_FREEZE)
2018 ata_port_freeze(ap);
2023 static void ahci_port_intr(struct ata_port *ap)
2025 void __iomem *port_mmio = ahci_port_base(ap);
2026 struct ata_eh_info *ehi = &ap->link.eh_info;
2027 struct ahci_port_priv *pp = ap->private_data;
2028 struct ahci_host_priv *hpriv = ap->host->private_data;
2029 int resetting = !!(ap->pflags & ATA_PFLAG_RESETTING);
2030 u32 status, qc_active;
2033 status = readl(port_mmio + PORT_IRQ_STAT);
2034 writel(status, port_mmio + PORT_IRQ_STAT);
2036 /* ignore BAD_PMP while resetting */
2037 if (unlikely(resetting))
2038 status &= ~PORT_IRQ_BAD_PMP;
2040 /* If we are getting PhyRdy, this is
2041 * just a power state change, we should
2042 * clear out this, plus the PhyRdy/Comm
2043 * Wake bits from Serror
2045 if ((hpriv->flags & AHCI_HFLAG_NO_HOTPLUG) &&
2046 (status & PORT_IRQ_PHYRDY)) {
2047 status &= ~PORT_IRQ_PHYRDY;
2048 ahci_scr_write(&ap->link, SCR_ERROR, ((1 << 16) | (1 << 18)));
2051 if (unlikely(status & PORT_IRQ_ERROR)) {
2052 ahci_error_intr(ap, status);
2056 if (status & PORT_IRQ_SDB_FIS) {
2057 /* If SNotification is available, leave notification
2058 * handling to sata_async_notification(). If not,
2059 * emulate it by snooping SDB FIS RX area.
2061 * Snooping FIS RX area is probably cheaper than
2062 * poking SNotification but some constrollers which
2063 * implement SNotification, ICH9 for example, don't
2064 * store AN SDB FIS into receive area.
2066 if (hpriv->cap & HOST_CAP_SNTF)
2067 sata_async_notification(ap);
2069 /* If the 'N' bit in word 0 of the FIS is set,
2070 * we just received asynchronous notification.
2071 * Tell libata about it.
2073 const __le32 *f = pp->rx_fis + RX_FIS_SDB;
2074 u32 f0 = le32_to_cpu(f[0]);
2077 sata_async_notification(ap);
2081 /* pp->active_link is valid iff any command is in flight */
2082 if (ap->qc_active && pp->active_link->sactive)
2083 qc_active = readl(port_mmio + PORT_SCR_ACT);
2085 qc_active = readl(port_mmio + PORT_CMD_ISSUE);
2087 rc = ata_qc_complete_multiple(ap, qc_active);
2089 /* while resetting, invalid completions are expected */
2090 if (unlikely(rc < 0 && !resetting)) {
2091 ehi->err_mask |= AC_ERR_HSM;
2092 ehi->action |= ATA_EH_RESET;
2093 ata_port_freeze(ap);
2097 static irqreturn_t ahci_interrupt(int irq, void *dev_instance)
2099 struct ata_host *host = dev_instance;
2100 struct ahci_host_priv *hpriv;
2101 unsigned int i, handled = 0;
2103 u32 irq_stat, irq_masked;
2107 hpriv = host->private_data;
2108 mmio = host->iomap[AHCI_PCI_BAR];
2110 /* sigh. 0xffffffff is a valid return from h/w */
2111 irq_stat = readl(mmio + HOST_IRQ_STAT);
2115 irq_masked = irq_stat & hpriv->port_map;
2117 spin_lock(&host->lock);
2119 for (i = 0; i < host->n_ports; i++) {
2120 struct ata_port *ap;
2122 if (!(irq_masked & (1 << i)))
2125 ap = host->ports[i];
2128 VPRINTK("port %u\n", i);
2130 VPRINTK("port %u (no irq)\n", i);
2131 if (ata_ratelimit())
2132 dev_printk(KERN_WARNING, host->dev,
2133 "interrupt on disabled port %u\n", i);
2139 /* HOST_IRQ_STAT behaves as level triggered latch meaning that
2140 * it should be cleared after all the port events are cleared;
2141 * otherwise, it will raise a spurious interrupt after each
2142 * valid one. Please read section 10.6.2 of ahci 1.1 for more
2145 * Also, use the unmasked value to clear interrupt as spurious
2146 * pending event on a dummy port might cause screaming IRQ.
2148 writel(irq_stat, mmio + HOST_IRQ_STAT);
2150 spin_unlock(&host->lock);
2154 return IRQ_RETVAL(handled);
2157 static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc)
2159 struct ata_port *ap = qc->ap;
2160 void __iomem *port_mmio = ahci_port_base(ap);
2161 struct ahci_port_priv *pp = ap->private_data;
2163 /* Keep track of the currently active link. It will be used
2164 * in completion path to determine whether NCQ phase is in
2167 pp->active_link = qc->dev->link;
2169 if (qc->tf.protocol == ATA_PROT_NCQ)
2170 writel(1 << qc->tag, port_mmio + PORT_SCR_ACT);
2171 writel(1 << qc->tag, port_mmio + PORT_CMD_ISSUE);
2173 ahci_sw_activity(qc->dev->link);
2178 static bool ahci_qc_fill_rtf(struct ata_queued_cmd *qc)
2180 struct ahci_port_priv *pp = qc->ap->private_data;
2181 u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
2183 ata_tf_from_fis(d2h_fis, &qc->result_tf);
2187 static void ahci_freeze(struct ata_port *ap)
2189 void __iomem *port_mmio = ahci_port_base(ap);
2192 writel(0, port_mmio + PORT_IRQ_MASK);
2195 static void ahci_thaw(struct ata_port *ap)
2197 void __iomem *mmio = ap->host->iomap[AHCI_PCI_BAR];
2198 void __iomem *port_mmio = ahci_port_base(ap);
2200 struct ahci_port_priv *pp = ap->private_data;
2203 tmp = readl(port_mmio + PORT_IRQ_STAT);
2204 writel(tmp, port_mmio + PORT_IRQ_STAT);
2205 writel(1 << ap->port_no, mmio + HOST_IRQ_STAT);
2207 /* turn IRQ back on */
2208 writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
2211 static void ahci_error_handler(struct ata_port *ap)
2213 if (!(ap->pflags & ATA_PFLAG_FROZEN)) {
2214 /* restart engine */
2215 ahci_stop_engine(ap);
2216 ahci_start_engine(ap);
2219 sata_pmp_error_handler(ap);
2222 static void ahci_post_internal_cmd(struct ata_queued_cmd *qc)
2224 struct ata_port *ap = qc->ap;
2226 /* make DMA engine forget about the failed command */
2227 if (qc->flags & ATA_QCFLAG_FAILED)
2228 ahci_kick_engine(ap, 1);
2231 static void ahci_pmp_attach(struct ata_port *ap)
2233 void __iomem *port_mmio = ahci_port_base(ap);
2234 struct ahci_port_priv *pp = ap->private_data;
2237 cmd = readl(port_mmio + PORT_CMD);
2238 cmd |= PORT_CMD_PMP;
2239 writel(cmd, port_mmio + PORT_CMD);
2241 pp->intr_mask |= PORT_IRQ_BAD_PMP;
2242 writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
2245 static void ahci_pmp_detach(struct ata_port *ap)
2247 void __iomem *port_mmio = ahci_port_base(ap);
2248 struct ahci_port_priv *pp = ap->private_data;
2251 cmd = readl(port_mmio + PORT_CMD);
2252 cmd &= ~PORT_CMD_PMP;
2253 writel(cmd, port_mmio + PORT_CMD);
2255 pp->intr_mask &= ~PORT_IRQ_BAD_PMP;
2256 writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
2259 static int ahci_port_resume(struct ata_port *ap)
2262 ahci_start_port(ap);
2264 if (sata_pmp_attached(ap))
2265 ahci_pmp_attach(ap);
2267 ahci_pmp_detach(ap);
2273 static int ahci_port_suspend(struct ata_port *ap, pm_message_t mesg)
2275 const char *emsg = NULL;
2278 rc = ahci_deinit_port(ap, &emsg);
2280 ahci_power_down(ap);
2282 ata_port_printk(ap, KERN_ERR, "%s (%d)\n", emsg, rc);
2283 ahci_start_port(ap);
2289 static int ahci_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
2291 struct ata_host *host = dev_get_drvdata(&pdev->dev);
2292 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
2295 if (mesg.event & PM_EVENT_SLEEP) {
2296 /* AHCI spec rev1.1 section 8.3.3:
2297 * Software must disable interrupts prior to requesting a
2298 * transition of the HBA to D3 state.
2300 ctl = readl(mmio + HOST_CTL);
2301 ctl &= ~HOST_IRQ_EN;
2302 writel(ctl, mmio + HOST_CTL);
2303 readl(mmio + HOST_CTL); /* flush */
2306 return ata_pci_device_suspend(pdev, mesg);
2309 static int ahci_pci_device_resume(struct pci_dev *pdev)
2311 struct ata_host *host = dev_get_drvdata(&pdev->dev);
2314 rc = ata_pci_device_do_resume(pdev);
2318 if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
2319 rc = ahci_reset_controller(host);
2323 ahci_init_controller(host);
2326 ata_host_resume(host);
2332 static int ahci_port_start(struct ata_port *ap)
2334 struct device *dev = ap->host->dev;
2335 struct ahci_port_priv *pp;
2339 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
2343 mem = dmam_alloc_coherent(dev, AHCI_PORT_PRIV_DMA_SZ, &mem_dma,
2347 memset(mem, 0, AHCI_PORT_PRIV_DMA_SZ);
2350 * First item in chunk of DMA memory: 32-slot command table,
2351 * 32 bytes each in size
2354 pp->cmd_slot_dma = mem_dma;
2356 mem += AHCI_CMD_SLOT_SZ;
2357 mem_dma += AHCI_CMD_SLOT_SZ;
2360 * Second item: Received-FIS area
2363 pp->rx_fis_dma = mem_dma;
2365 mem += AHCI_RX_FIS_SZ;
2366 mem_dma += AHCI_RX_FIS_SZ;
2369 * Third item: data area for storing a single command
2370 * and its scatter-gather table
2373 pp->cmd_tbl_dma = mem_dma;
2376 * Save off initial list of interrupts to be enabled.
2377 * This could be changed later
2379 pp->intr_mask = DEF_PORT_IRQ;
2381 ap->private_data = pp;
2383 /* engage engines, captain */
2384 return ahci_port_resume(ap);
2387 static void ahci_port_stop(struct ata_port *ap)
2389 const char *emsg = NULL;
2392 /* de-initialize port */
2393 rc = ahci_deinit_port(ap, &emsg);
2395 ata_port_printk(ap, KERN_WARNING, "%s (%d)\n", emsg, rc);
2398 static int ahci_configure_dma_masks(struct pci_dev *pdev, int using_dac)
2403 !pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
2404 rc = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
2406 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
2408 dev_printk(KERN_ERR, &pdev->dev,
2409 "64-bit DMA enable failed\n");
2414 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
2416 dev_printk(KERN_ERR, &pdev->dev,
2417 "32-bit DMA enable failed\n");
2420 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
2422 dev_printk(KERN_ERR, &pdev->dev,
2423 "32-bit consistent DMA enable failed\n");
2430 static void ahci_print_info(struct ata_host *host)
2432 struct ahci_host_priv *hpriv = host->private_data;
2433 struct pci_dev *pdev = to_pci_dev(host->dev);
2434 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
2435 u32 vers, cap, impl, speed;
2436 const char *speed_s;
2440 vers = readl(mmio + HOST_VERSION);
2442 impl = hpriv->port_map;
2444 speed = (cap >> 20) & 0xf;
2447 else if (speed == 2)
2452 pci_read_config_word(pdev, 0x0a, &cc);
2453 if (cc == PCI_CLASS_STORAGE_IDE)
2455 else if (cc == PCI_CLASS_STORAGE_SATA)
2457 else if (cc == PCI_CLASS_STORAGE_RAID)
2462 dev_printk(KERN_INFO, &pdev->dev,
2463 "AHCI %02x%02x.%02x%02x "
2464 "%u slots %u ports %s Gbps 0x%x impl %s mode\n"
2467 (vers >> 24) & 0xff,
2468 (vers >> 16) & 0xff,
2472 ((cap >> 8) & 0x1f) + 1,
2478 dev_printk(KERN_INFO, &pdev->dev,
2485 cap & (1 << 31) ? "64bit " : "",
2486 cap & (1 << 30) ? "ncq " : "",
2487 cap & (1 << 29) ? "sntf " : "",
2488 cap & (1 << 28) ? "ilck " : "",
2489 cap & (1 << 27) ? "stag " : "",
2490 cap & (1 << 26) ? "pm " : "",
2491 cap & (1 << 25) ? "led " : "",
2493 cap & (1 << 24) ? "clo " : "",
2494 cap & (1 << 19) ? "nz " : "",
2495 cap & (1 << 18) ? "only " : "",
2496 cap & (1 << 17) ? "pmp " : "",
2497 cap & (1 << 15) ? "pio " : "",
2498 cap & (1 << 14) ? "slum " : "",
2499 cap & (1 << 13) ? "part " : "",
2500 cap & (1 << 6) ? "ems ": ""
2504 /* On ASUS P5W DH Deluxe, the second port of PCI device 00:1f.2 is
2505 * hardwired to on-board SIMG 4726. The chipset is ICH8 and doesn't
2506 * support PMP and the 4726 either directly exports the device
2507 * attached to the first downstream port or acts as a hardware storage
2508 * controller and emulate a single ATA device (can be RAID 0/1 or some
2509 * other configuration).
2511 * When there's no device attached to the first downstream port of the
2512 * 4726, "Config Disk" appears, which is a pseudo ATA device to
2513 * configure the 4726. However, ATA emulation of the device is very
2514 * lame. It doesn't send signature D2H Reg FIS after the initial
2515 * hardreset, pukes on SRST w/ PMP==0 and has bunch of other issues.
2517 * The following function works around the problem by always using
2518 * hardreset on the port and not depending on receiving signature FIS
2519 * afterward. If signature FIS isn't received soon, ATA class is
2520 * assumed without follow-up softreset.
2522 static void ahci_p5wdh_workaround(struct ata_host *host)
2524 static struct dmi_system_id sysids[] = {
2526 .ident = "P5W DH Deluxe",
2528 DMI_MATCH(DMI_SYS_VENDOR,
2529 "ASUSTEK COMPUTER INC"),
2530 DMI_MATCH(DMI_PRODUCT_NAME, "P5W DH Deluxe"),
2535 struct pci_dev *pdev = to_pci_dev(host->dev);
2537 if (pdev->bus->number == 0 && pdev->devfn == PCI_DEVFN(0x1f, 2) &&
2538 dmi_check_system(sysids)) {
2539 struct ata_port *ap = host->ports[1];
2541 dev_printk(KERN_INFO, &pdev->dev, "enabling ASUS P5W DH "
2542 "Deluxe on-board SIMG4726 workaround\n");
2544 ap->ops = &ahci_p5wdh_ops;
2545 ap->link.flags |= ATA_LFLAG_NO_SRST | ATA_LFLAG_ASSUME_ATA;
2549 static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
2551 static int printed_version;
2552 unsigned int board_id = ent->driver_data;
2553 struct ata_port_info pi = ahci_port_info[board_id];
2554 const struct ata_port_info *ppi[] = { &pi, NULL };
2555 struct device *dev = &pdev->dev;
2556 struct ahci_host_priv *hpriv;
2557 struct ata_host *host;
2562 WARN_ON(ATA_MAX_QUEUE > AHCI_MAX_CMDS);
2564 if (!printed_version++)
2565 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
2567 /* The AHCI driver can only drive the SATA ports, the PATA driver
2568 can drive them all so if both drivers are selected make sure
2569 AHCI stays out of the way */
2570 if (pdev->vendor == PCI_VENDOR_ID_MARVELL && !marvell_enable)
2573 /* acquire resources */
2574 rc = pcim_enable_device(pdev);
2578 /* AHCI controllers often implement SFF compatible interface.
2579 * Grab all PCI BARs just in case.
2581 rc = pcim_iomap_regions_request_all(pdev, 1 << AHCI_PCI_BAR, DRV_NAME);
2583 pcim_pin_device(pdev);
2587 if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
2588 (pdev->device == 0x2652 || pdev->device == 0x2653)) {
2591 /* ICH6s share the same PCI ID for both piix and ahci
2592 * modes. Enabling ahci mode while MAP indicates
2593 * combined mode is a bad idea. Yield to ata_piix.
2595 pci_read_config_byte(pdev, ICH_MAP, &map);
2597 dev_printk(KERN_INFO, &pdev->dev, "controller is in "
2598 "combined mode, can't enable AHCI mode\n");
2603 hpriv = devm_kzalloc(dev, sizeof(*hpriv), GFP_KERNEL);
2606 hpriv->flags |= (unsigned long)pi.private_data;
2608 /* MCP65 revision A1 and A2 can't do MSI */
2609 if (board_id == board_ahci_mcp65 &&
2610 (pdev->revision == 0xa1 || pdev->revision == 0xa2))
2611 hpriv->flags |= AHCI_HFLAG_NO_MSI;
2613 if ((hpriv->flags & AHCI_HFLAG_NO_MSI) || pci_enable_msi(pdev))
2616 /* save initial config */
2617 ahci_save_initial_config(pdev, hpriv);
2620 if (hpriv->cap & HOST_CAP_NCQ)
2621 pi.flags |= ATA_FLAG_NCQ;
2623 if (hpriv->cap & HOST_CAP_PMP)
2624 pi.flags |= ATA_FLAG_PMP;
2626 if (ahci_em_messages && (hpriv->cap & HOST_CAP_EMS)) {
2628 void __iomem *mmio = pcim_iomap_table(pdev)[AHCI_PCI_BAR];
2629 u32 em_loc = readl(mmio + HOST_EM_LOC);
2630 u32 em_ctl = readl(mmio + HOST_EM_CTL);
2632 messages = (em_ctl & EM_CTRL_MSG_TYPE) >> 16;
2634 /* we only support LED message type right now */
2635 if ((messages & 0x01) && (ahci_em_messages == 1)) {
2637 hpriv->em_loc = ((em_loc >> 16) * 4);
2638 pi.flags |= ATA_FLAG_EM;
2639 if (!(em_ctl & EM_CTL_ALHD))
2640 pi.flags |= ATA_FLAG_SW_ACTIVITY;
2644 /* CAP.NP sometimes indicate the index of the last enabled
2645 * port, at other times, that of the last possible port, so
2646 * determining the maximum port number requires looking at
2647 * both CAP.NP and port_map.
2649 n_ports = max(ahci_nr_ports(hpriv->cap), fls(hpriv->port_map));
2651 host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
2654 host->iomap = pcim_iomap_table(pdev);
2655 host->private_data = hpriv;
2657 if (pi.flags & ATA_FLAG_EM)
2658 ahci_reset_em(host);
2660 for (i = 0; i < host->n_ports; i++) {
2661 struct ata_port *ap = host->ports[i];
2663 ata_port_pbar_desc(ap, AHCI_PCI_BAR, -1, "abar");
2664 ata_port_pbar_desc(ap, AHCI_PCI_BAR,
2665 0x100 + ap->port_no * 0x80, "port");
2667 /* set initial link pm policy */
2668 ap->pm_policy = NOT_AVAILABLE;
2670 /* set enclosure management message type */
2671 if (ap->flags & ATA_FLAG_EM)
2672 ap->em_message_type = ahci_em_messages;
2675 /* disabled/not-implemented port */
2676 if (!(hpriv->port_map & (1 << i)))
2677 ap->ops = &ata_dummy_port_ops;
2680 /* apply workaround for ASUS P5W DH Deluxe mainboard */
2681 ahci_p5wdh_workaround(host);
2683 /* initialize adapter */
2684 rc = ahci_configure_dma_masks(pdev, hpriv->cap & HOST_CAP_64);
2688 rc = ahci_reset_controller(host);
2692 ahci_init_controller(host);
2693 ahci_print_info(host);
2695 pci_set_master(pdev);
2696 return ata_host_activate(host, pdev->irq, ahci_interrupt, IRQF_SHARED,
2700 static int __init ahci_init(void)
2702 return pci_register_driver(&ahci_pci_driver);
2705 static void __exit ahci_exit(void)
2707 pci_unregister_driver(&ahci_pci_driver);
2711 MODULE_AUTHOR("Jeff Garzik");
2712 MODULE_DESCRIPTION("AHCI SATA low-level driver");
2713 MODULE_LICENSE("GPL");
2714 MODULE_DEVICE_TABLE(pci, ahci_pci_tbl);
2715 MODULE_VERSION(DRV_VERSION);
2717 module_init(ahci_init);
2718 module_exit(ahci_exit);