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 static int ahci_skip_host_reset;
53 module_param_named(skip_host_reset, ahci_skip_host_reset, int, 0444);
54 MODULE_PARM_DESC(skip_host_reset, "skip global host reset (0=don't skip, 1=skip)");
56 static int ahci_enable_alpm(struct ata_port *ap,
58 static void ahci_disable_alpm(struct ata_port *ap);
63 AHCI_MAX_SG = 168, /* hardware max is 64K */
64 AHCI_DMA_BOUNDARY = 0xffffffff,
67 AHCI_CMD_SLOT_SZ = AHCI_MAX_CMDS * AHCI_CMD_SZ,
69 AHCI_CMD_TBL_CDB = 0x40,
70 AHCI_CMD_TBL_HDR_SZ = 0x80,
71 AHCI_CMD_TBL_SZ = AHCI_CMD_TBL_HDR_SZ + (AHCI_MAX_SG * 16),
72 AHCI_CMD_TBL_AR_SZ = AHCI_CMD_TBL_SZ * AHCI_MAX_CMDS,
73 AHCI_PORT_PRIV_DMA_SZ = AHCI_CMD_SLOT_SZ + AHCI_CMD_TBL_AR_SZ +
75 AHCI_IRQ_ON_SG = (1 << 31),
76 AHCI_CMD_ATAPI = (1 << 5),
77 AHCI_CMD_WRITE = (1 << 6),
78 AHCI_CMD_PREFETCH = (1 << 7),
79 AHCI_CMD_RESET = (1 << 8),
80 AHCI_CMD_CLR_BUSY = (1 << 10),
82 RX_FIS_D2H_REG = 0x40, /* offset of D2H Register FIS data */
83 RX_FIS_SDB = 0x58, /* offset of SDB FIS data */
84 RX_FIS_UNK = 0x60, /* offset of Unknown FIS data */
87 board_ahci_vt8251 = 1,
88 board_ahci_ign_iferr = 2,
93 /* global controller registers */
94 HOST_CAP = 0x00, /* host capabilities */
95 HOST_CTL = 0x04, /* global host control */
96 HOST_IRQ_STAT = 0x08, /* interrupt status */
97 HOST_PORTS_IMPL = 0x0c, /* bitmap of implemented ports */
98 HOST_VERSION = 0x10, /* AHCI spec. version compliancy */
101 HOST_RESET = (1 << 0), /* reset controller; self-clear */
102 HOST_IRQ_EN = (1 << 1), /* global IRQ enable */
103 HOST_AHCI_EN = (1 << 31), /* AHCI enabled */
106 HOST_CAP_SSC = (1 << 14), /* Slumber capable */
107 HOST_CAP_PMP = (1 << 17), /* Port Multiplier support */
108 HOST_CAP_CLO = (1 << 24), /* Command List Override support */
109 HOST_CAP_ALPM = (1 << 26), /* Aggressive Link PM support */
110 HOST_CAP_SSS = (1 << 27), /* Staggered Spin-up */
111 HOST_CAP_SNTF = (1 << 29), /* SNotification register */
112 HOST_CAP_NCQ = (1 << 30), /* Native Command Queueing */
113 HOST_CAP_64 = (1 << 31), /* PCI DAC (64-bit DMA) support */
115 /* registers for each SATA port */
116 PORT_LST_ADDR = 0x00, /* command list DMA addr */
117 PORT_LST_ADDR_HI = 0x04, /* command list DMA addr hi */
118 PORT_FIS_ADDR = 0x08, /* FIS rx buf addr */
119 PORT_FIS_ADDR_HI = 0x0c, /* FIS rx buf addr hi */
120 PORT_IRQ_STAT = 0x10, /* interrupt status */
121 PORT_IRQ_MASK = 0x14, /* interrupt enable/disable mask */
122 PORT_CMD = 0x18, /* port command */
123 PORT_TFDATA = 0x20, /* taskfile data */
124 PORT_SIG = 0x24, /* device TF signature */
125 PORT_CMD_ISSUE = 0x38, /* command issue */
126 PORT_SCR_STAT = 0x28, /* SATA phy register: SStatus */
127 PORT_SCR_CTL = 0x2c, /* SATA phy register: SControl */
128 PORT_SCR_ERR = 0x30, /* SATA phy register: SError */
129 PORT_SCR_ACT = 0x34, /* SATA phy register: SActive */
130 PORT_SCR_NTF = 0x3c, /* SATA phy register: SNotification */
132 /* PORT_IRQ_{STAT,MASK} bits */
133 PORT_IRQ_COLD_PRES = (1 << 31), /* cold presence detect */
134 PORT_IRQ_TF_ERR = (1 << 30), /* task file error */
135 PORT_IRQ_HBUS_ERR = (1 << 29), /* host bus fatal error */
136 PORT_IRQ_HBUS_DATA_ERR = (1 << 28), /* host bus data error */
137 PORT_IRQ_IF_ERR = (1 << 27), /* interface fatal error */
138 PORT_IRQ_IF_NONFATAL = (1 << 26), /* interface non-fatal error */
139 PORT_IRQ_OVERFLOW = (1 << 24), /* xfer exhausted available S/G */
140 PORT_IRQ_BAD_PMP = (1 << 23), /* incorrect port multiplier */
142 PORT_IRQ_PHYRDY = (1 << 22), /* PhyRdy changed */
143 PORT_IRQ_DEV_ILCK = (1 << 7), /* device interlock */
144 PORT_IRQ_CONNECT = (1 << 6), /* port connect change status */
145 PORT_IRQ_SG_DONE = (1 << 5), /* descriptor processed */
146 PORT_IRQ_UNK_FIS = (1 << 4), /* unknown FIS rx'd */
147 PORT_IRQ_SDB_FIS = (1 << 3), /* Set Device Bits FIS rx'd */
148 PORT_IRQ_DMAS_FIS = (1 << 2), /* DMA Setup FIS rx'd */
149 PORT_IRQ_PIOS_FIS = (1 << 1), /* PIO Setup FIS rx'd */
150 PORT_IRQ_D2H_REG_FIS = (1 << 0), /* D2H Register FIS rx'd */
152 PORT_IRQ_FREEZE = PORT_IRQ_HBUS_ERR |
158 PORT_IRQ_ERROR = PORT_IRQ_FREEZE |
160 PORT_IRQ_HBUS_DATA_ERR,
161 DEF_PORT_IRQ = PORT_IRQ_ERROR | PORT_IRQ_SG_DONE |
162 PORT_IRQ_SDB_FIS | PORT_IRQ_DMAS_FIS |
163 PORT_IRQ_PIOS_FIS | PORT_IRQ_D2H_REG_FIS,
166 PORT_CMD_ASP = (1 << 27), /* Aggressive Slumber/Partial */
167 PORT_CMD_ALPE = (1 << 26), /* Aggressive Link PM enable */
168 PORT_CMD_ATAPI = (1 << 24), /* Device is ATAPI */
169 PORT_CMD_PMP = (1 << 17), /* PMP attached */
170 PORT_CMD_LIST_ON = (1 << 15), /* cmd list DMA engine running */
171 PORT_CMD_FIS_ON = (1 << 14), /* FIS DMA engine running */
172 PORT_CMD_FIS_RX = (1 << 4), /* Enable FIS receive DMA engine */
173 PORT_CMD_CLO = (1 << 3), /* Command list override */
174 PORT_CMD_POWER_ON = (1 << 2), /* Power up device */
175 PORT_CMD_SPIN_UP = (1 << 1), /* Spin up device */
176 PORT_CMD_START = (1 << 0), /* Enable port DMA engine */
178 PORT_CMD_ICC_MASK = (0xf << 28), /* i/f ICC state mask */
179 PORT_CMD_ICC_ACTIVE = (0x1 << 28), /* Put i/f in active state */
180 PORT_CMD_ICC_PARTIAL = (0x2 << 28), /* Put i/f in partial state */
181 PORT_CMD_ICC_SLUMBER = (0x6 << 28), /* Put i/f in slumber state */
183 /* hpriv->flags bits */
184 AHCI_HFLAG_NO_NCQ = (1 << 0),
185 AHCI_HFLAG_IGN_IRQ_IF_ERR = (1 << 1), /* ignore IRQ_IF_ERR */
186 AHCI_HFLAG_IGN_SERR_INTERNAL = (1 << 2), /* ignore SERR_INTERNAL */
187 AHCI_HFLAG_32BIT_ONLY = (1 << 3), /* force 32bit */
188 AHCI_HFLAG_MV_PATA = (1 << 4), /* PATA port */
189 AHCI_HFLAG_NO_MSI = (1 << 5), /* no PCI MSI */
190 AHCI_HFLAG_NO_PMP = (1 << 6), /* no PMP */
191 AHCI_HFLAG_NO_HOTPLUG = (1 << 7), /* ignore PxSERR.DIAG.N */
192 AHCI_HFLAG_SECT255 = (1 << 8), /* max 255 sectors */
196 AHCI_FLAG_COMMON = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
197 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA |
198 ATA_FLAG_ACPI_SATA | ATA_FLAG_AN |
201 ICH_MAP = 0x90, /* ICH MAP register */
204 struct ahci_cmd_hdr {
219 struct ahci_host_priv {
220 unsigned int flags; /* AHCI_HFLAG_* */
221 u32 cap; /* cap to use */
222 u32 port_map; /* port map to use */
223 u32 saved_cap; /* saved initial cap */
224 u32 saved_port_map; /* saved initial port_map */
227 struct ahci_port_priv {
228 struct ata_link *active_link;
229 struct ahci_cmd_hdr *cmd_slot;
230 dma_addr_t cmd_slot_dma;
232 dma_addr_t cmd_tbl_dma;
234 dma_addr_t rx_fis_dma;
235 /* for NCQ spurious interrupt analysis */
236 unsigned int ncq_saw_d2h:1;
237 unsigned int ncq_saw_dmas:1;
238 unsigned int ncq_saw_sdb:1;
239 u32 intr_mask; /* interrupts to enable */
242 static int ahci_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val);
243 static int ahci_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val);
244 static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
245 static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc);
246 static int ahci_port_start(struct ata_port *ap);
247 static void ahci_port_stop(struct ata_port *ap);
248 static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
249 static void ahci_qc_prep(struct ata_queued_cmd *qc);
250 static u8 ahci_check_status(struct ata_port *ap);
251 static void ahci_freeze(struct ata_port *ap);
252 static void ahci_thaw(struct ata_port *ap);
253 static void ahci_pmp_attach(struct ata_port *ap);
254 static void ahci_pmp_detach(struct ata_port *ap);
255 static void ahci_error_handler(struct ata_port *ap);
256 static void ahci_vt8251_error_handler(struct ata_port *ap);
257 static void ahci_p5wdh_error_handler(struct ata_port *ap);
258 static void ahci_post_internal_cmd(struct ata_queued_cmd *qc);
259 static int ahci_port_resume(struct ata_port *ap);
260 static void ahci_dev_config(struct ata_device *dev);
261 static unsigned int ahci_fill_sg(struct ata_queued_cmd *qc, void *cmd_tbl);
262 static void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag,
265 static int ahci_port_suspend(struct ata_port *ap, pm_message_t mesg);
266 static int ahci_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
267 static int ahci_pci_device_resume(struct pci_dev *pdev);
270 static struct class_device_attribute *ahci_shost_attrs[] = {
271 &class_device_attr_link_power_management_policy,
275 static struct scsi_host_template ahci_sht = {
276 ATA_NCQ_SHT(DRV_NAME),
277 .can_queue = AHCI_MAX_CMDS - 1,
278 .sg_tablesize = AHCI_MAX_SG,
279 .dma_boundary = AHCI_DMA_BOUNDARY,
280 .shost_attrs = ahci_shost_attrs,
283 static const struct ata_port_operations ahci_ops = {
284 .check_status = ahci_check_status,
285 .check_altstatus = ahci_check_status,
286 .dev_select = ata_noop_dev_select,
288 .dev_config = ahci_dev_config,
290 .tf_read = ahci_tf_read,
292 .qc_defer = sata_pmp_qc_defer_cmd_switch,
293 .qc_prep = ahci_qc_prep,
294 .qc_issue = ahci_qc_issue,
296 .irq_clear = ata_noop_irq_clear,
298 .scr_read = ahci_scr_read,
299 .scr_write = ahci_scr_write,
301 .freeze = ahci_freeze,
304 .error_handler = ahci_error_handler,
305 .post_internal_cmd = ahci_post_internal_cmd,
307 .pmp_attach = ahci_pmp_attach,
308 .pmp_detach = ahci_pmp_detach,
311 .port_suspend = ahci_port_suspend,
312 .port_resume = ahci_port_resume,
314 .enable_pm = ahci_enable_alpm,
315 .disable_pm = ahci_disable_alpm,
317 .port_start = ahci_port_start,
318 .port_stop = ahci_port_stop,
321 static const struct ata_port_operations ahci_vt8251_ops = {
322 .check_status = ahci_check_status,
323 .check_altstatus = ahci_check_status,
324 .dev_select = ata_noop_dev_select,
326 .dev_config = ahci_dev_config,
328 .tf_read = ahci_tf_read,
330 .qc_defer = sata_pmp_qc_defer_cmd_switch,
331 .qc_prep = ahci_qc_prep,
332 .qc_issue = ahci_qc_issue,
334 .irq_clear = ata_noop_irq_clear,
336 .scr_read = ahci_scr_read,
337 .scr_write = ahci_scr_write,
339 .freeze = ahci_freeze,
342 .error_handler = ahci_vt8251_error_handler,
343 .post_internal_cmd = ahci_post_internal_cmd,
345 .pmp_attach = ahci_pmp_attach,
346 .pmp_detach = ahci_pmp_detach,
349 .port_suspend = ahci_port_suspend,
350 .port_resume = ahci_port_resume,
352 .enable_pm = ahci_enable_alpm,
353 .disable_pm = ahci_disable_alpm,
355 .port_start = ahci_port_start,
356 .port_stop = ahci_port_stop,
359 static const struct ata_port_operations ahci_p5wdh_ops = {
360 .check_status = ahci_check_status,
361 .check_altstatus = ahci_check_status,
362 .dev_select = ata_noop_dev_select,
364 .dev_config = ahci_dev_config,
366 .tf_read = ahci_tf_read,
368 .qc_defer = sata_pmp_qc_defer_cmd_switch,
369 .qc_prep = ahci_qc_prep,
370 .qc_issue = ahci_qc_issue,
372 .irq_clear = ata_noop_irq_clear,
374 .scr_read = ahci_scr_read,
375 .scr_write = ahci_scr_write,
377 .freeze = ahci_freeze,
380 .error_handler = ahci_p5wdh_error_handler,
381 .post_internal_cmd = ahci_post_internal_cmd,
383 .pmp_attach = ahci_pmp_attach,
384 .pmp_detach = ahci_pmp_detach,
387 .port_suspend = ahci_port_suspend,
388 .port_resume = ahci_port_resume,
390 .enable_pm = ahci_enable_alpm,
391 .disable_pm = ahci_disable_alpm,
393 .port_start = ahci_port_start,
394 .port_stop = ahci_port_stop,
397 #define AHCI_HFLAGS(flags) .private_data = (void *)(flags)
399 static const struct ata_port_info ahci_port_info[] = {
402 .flags = AHCI_FLAG_COMMON,
403 .pio_mask = 0x1f, /* pio0-4 */
404 .udma_mask = ATA_UDMA6,
405 .port_ops = &ahci_ops,
407 /* board_ahci_vt8251 */
409 AHCI_HFLAGS (AHCI_HFLAG_NO_NCQ | AHCI_HFLAG_NO_PMP),
410 .flags = AHCI_FLAG_COMMON,
411 .pio_mask = 0x1f, /* pio0-4 */
412 .udma_mask = ATA_UDMA6,
413 .port_ops = &ahci_vt8251_ops,
415 /* board_ahci_ign_iferr */
417 AHCI_HFLAGS (AHCI_HFLAG_IGN_IRQ_IF_ERR),
418 .flags = AHCI_FLAG_COMMON,
419 .pio_mask = 0x1f, /* pio0-4 */
420 .udma_mask = ATA_UDMA6,
421 .port_ops = &ahci_ops,
423 /* board_ahci_sb600 */
425 AHCI_HFLAGS (AHCI_HFLAG_IGN_SERR_INTERNAL |
426 AHCI_HFLAG_32BIT_ONLY |
427 AHCI_HFLAG_SECT255 | AHCI_HFLAG_NO_PMP),
428 .flags = AHCI_FLAG_COMMON,
429 .pio_mask = 0x1f, /* pio0-4 */
430 .udma_mask = ATA_UDMA6,
431 .port_ops = &ahci_ops,
435 AHCI_HFLAGS (AHCI_HFLAG_NO_NCQ | AHCI_HFLAG_NO_MSI |
437 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
438 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
439 .pio_mask = 0x1f, /* pio0-4 */
440 .udma_mask = ATA_UDMA6,
441 .port_ops = &ahci_ops,
443 /* board_ahci_sb700 */
445 AHCI_HFLAGS (AHCI_HFLAG_IGN_SERR_INTERNAL |
447 .flags = AHCI_FLAG_COMMON,
448 .pio_mask = 0x1f, /* pio0-4 */
449 .udma_mask = ATA_UDMA6,
450 .port_ops = &ahci_ops,
454 static const struct pci_device_id ahci_pci_tbl[] = {
456 { PCI_VDEVICE(INTEL, 0x2652), board_ahci }, /* ICH6 */
457 { PCI_VDEVICE(INTEL, 0x2653), board_ahci }, /* ICH6M */
458 { PCI_VDEVICE(INTEL, 0x27c1), board_ahci }, /* ICH7 */
459 { PCI_VDEVICE(INTEL, 0x27c5), board_ahci }, /* ICH7M */
460 { PCI_VDEVICE(INTEL, 0x27c3), board_ahci }, /* ICH7R */
461 { PCI_VDEVICE(AL, 0x5288), board_ahci_ign_iferr }, /* ULi M5288 */
462 { PCI_VDEVICE(INTEL, 0x2681), board_ahci }, /* ESB2 */
463 { PCI_VDEVICE(INTEL, 0x2682), board_ahci }, /* ESB2 */
464 { PCI_VDEVICE(INTEL, 0x2683), board_ahci }, /* ESB2 */
465 { PCI_VDEVICE(INTEL, 0x27c6), board_ahci }, /* ICH7-M DH */
466 { PCI_VDEVICE(INTEL, 0x2821), board_ahci }, /* ICH8 */
467 { PCI_VDEVICE(INTEL, 0x2822), board_ahci }, /* ICH8 */
468 { PCI_VDEVICE(INTEL, 0x2824), board_ahci }, /* ICH8 */
469 { PCI_VDEVICE(INTEL, 0x2829), board_ahci }, /* ICH8M */
470 { PCI_VDEVICE(INTEL, 0x282a), board_ahci }, /* ICH8M */
471 { PCI_VDEVICE(INTEL, 0x2922), board_ahci }, /* ICH9 */
472 { PCI_VDEVICE(INTEL, 0x2923), board_ahci }, /* ICH9 */
473 { PCI_VDEVICE(INTEL, 0x2924), board_ahci }, /* ICH9 */
474 { PCI_VDEVICE(INTEL, 0x2925), board_ahci }, /* ICH9 */
475 { PCI_VDEVICE(INTEL, 0x2927), board_ahci }, /* ICH9 */
476 { PCI_VDEVICE(INTEL, 0x2929), board_ahci }, /* ICH9M */
477 { PCI_VDEVICE(INTEL, 0x292a), board_ahci }, /* ICH9M */
478 { PCI_VDEVICE(INTEL, 0x292b), board_ahci }, /* ICH9M */
479 { PCI_VDEVICE(INTEL, 0x292c), board_ahci }, /* ICH9M */
480 { PCI_VDEVICE(INTEL, 0x292f), board_ahci }, /* ICH9M */
481 { PCI_VDEVICE(INTEL, 0x294d), board_ahci }, /* ICH9 */
482 { PCI_VDEVICE(INTEL, 0x294e), board_ahci }, /* ICH9M */
483 { PCI_VDEVICE(INTEL, 0x502a), board_ahci }, /* Tolapai */
484 { PCI_VDEVICE(INTEL, 0x502b), board_ahci }, /* Tolapai */
485 { PCI_VDEVICE(INTEL, 0x3a05), board_ahci }, /* ICH10 */
486 { PCI_VDEVICE(INTEL, 0x3a25), board_ahci }, /* ICH10 */
488 /* JMicron 360/1/3/5/6, match class to avoid IDE function */
489 { PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
490 PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci_ign_iferr },
493 { PCI_VDEVICE(ATI, 0x4380), board_ahci_sb600 }, /* ATI SB600 */
494 { PCI_VDEVICE(ATI, 0x4390), board_ahci_sb700 }, /* ATI SB700/800 */
495 { PCI_VDEVICE(ATI, 0x4391), board_ahci_sb700 }, /* ATI SB700/800 */
496 { PCI_VDEVICE(ATI, 0x4392), board_ahci_sb700 }, /* ATI SB700/800 */
497 { PCI_VDEVICE(ATI, 0x4393), board_ahci_sb700 }, /* ATI SB700/800 */
498 { PCI_VDEVICE(ATI, 0x4394), board_ahci_sb700 }, /* ATI SB700/800 */
499 { PCI_VDEVICE(ATI, 0x4395), board_ahci_sb700 }, /* ATI SB700/800 */
502 { PCI_VDEVICE(VIA, 0x3349), board_ahci_vt8251 }, /* VIA VT8251 */
503 { PCI_VDEVICE(VIA, 0x6287), board_ahci_vt8251 }, /* VIA VT8251 */
506 { PCI_VDEVICE(NVIDIA, 0x044c), board_ahci }, /* MCP65 */
507 { PCI_VDEVICE(NVIDIA, 0x044d), board_ahci }, /* MCP65 */
508 { PCI_VDEVICE(NVIDIA, 0x044e), board_ahci }, /* MCP65 */
509 { PCI_VDEVICE(NVIDIA, 0x044f), board_ahci }, /* MCP65 */
510 { PCI_VDEVICE(NVIDIA, 0x045c), board_ahci }, /* MCP65 */
511 { PCI_VDEVICE(NVIDIA, 0x045d), board_ahci }, /* MCP65 */
512 { PCI_VDEVICE(NVIDIA, 0x045e), board_ahci }, /* MCP65 */
513 { PCI_VDEVICE(NVIDIA, 0x045f), board_ahci }, /* MCP65 */
514 { PCI_VDEVICE(NVIDIA, 0x0550), board_ahci }, /* MCP67 */
515 { PCI_VDEVICE(NVIDIA, 0x0551), board_ahci }, /* MCP67 */
516 { PCI_VDEVICE(NVIDIA, 0x0552), board_ahci }, /* MCP67 */
517 { PCI_VDEVICE(NVIDIA, 0x0553), board_ahci }, /* MCP67 */
518 { PCI_VDEVICE(NVIDIA, 0x0554), board_ahci }, /* MCP67 */
519 { PCI_VDEVICE(NVIDIA, 0x0555), board_ahci }, /* MCP67 */
520 { PCI_VDEVICE(NVIDIA, 0x0556), board_ahci }, /* MCP67 */
521 { PCI_VDEVICE(NVIDIA, 0x0557), board_ahci }, /* MCP67 */
522 { PCI_VDEVICE(NVIDIA, 0x0558), board_ahci }, /* MCP67 */
523 { PCI_VDEVICE(NVIDIA, 0x0559), board_ahci }, /* MCP67 */
524 { PCI_VDEVICE(NVIDIA, 0x055a), board_ahci }, /* MCP67 */
525 { PCI_VDEVICE(NVIDIA, 0x055b), board_ahci }, /* MCP67 */
526 { PCI_VDEVICE(NVIDIA, 0x07f0), board_ahci }, /* MCP73 */
527 { PCI_VDEVICE(NVIDIA, 0x07f1), board_ahci }, /* MCP73 */
528 { PCI_VDEVICE(NVIDIA, 0x07f2), board_ahci }, /* MCP73 */
529 { PCI_VDEVICE(NVIDIA, 0x07f3), board_ahci }, /* MCP73 */
530 { PCI_VDEVICE(NVIDIA, 0x07f4), board_ahci }, /* MCP73 */
531 { PCI_VDEVICE(NVIDIA, 0x07f5), board_ahci }, /* MCP73 */
532 { PCI_VDEVICE(NVIDIA, 0x07f6), board_ahci }, /* MCP73 */
533 { PCI_VDEVICE(NVIDIA, 0x07f7), board_ahci }, /* MCP73 */
534 { PCI_VDEVICE(NVIDIA, 0x07f8), board_ahci }, /* MCP73 */
535 { PCI_VDEVICE(NVIDIA, 0x07f9), board_ahci }, /* MCP73 */
536 { PCI_VDEVICE(NVIDIA, 0x07fa), board_ahci }, /* MCP73 */
537 { PCI_VDEVICE(NVIDIA, 0x07fb), board_ahci }, /* MCP73 */
538 { PCI_VDEVICE(NVIDIA, 0x0ad0), board_ahci }, /* MCP77 */
539 { PCI_VDEVICE(NVIDIA, 0x0ad1), board_ahci }, /* MCP77 */
540 { PCI_VDEVICE(NVIDIA, 0x0ad2), board_ahci }, /* MCP77 */
541 { PCI_VDEVICE(NVIDIA, 0x0ad3), board_ahci }, /* MCP77 */
542 { PCI_VDEVICE(NVIDIA, 0x0ad4), board_ahci }, /* MCP77 */
543 { PCI_VDEVICE(NVIDIA, 0x0ad5), board_ahci }, /* MCP77 */
544 { PCI_VDEVICE(NVIDIA, 0x0ad6), board_ahci }, /* MCP77 */
545 { PCI_VDEVICE(NVIDIA, 0x0ad7), board_ahci }, /* MCP77 */
546 { PCI_VDEVICE(NVIDIA, 0x0ad8), board_ahci }, /* MCP77 */
547 { PCI_VDEVICE(NVIDIA, 0x0ad9), board_ahci }, /* MCP77 */
548 { PCI_VDEVICE(NVIDIA, 0x0ada), board_ahci }, /* MCP77 */
549 { PCI_VDEVICE(NVIDIA, 0x0adb), board_ahci }, /* MCP77 */
550 { PCI_VDEVICE(NVIDIA, 0x0ab4), board_ahci }, /* MCP79 */
551 { PCI_VDEVICE(NVIDIA, 0x0ab5), board_ahci }, /* MCP79 */
552 { PCI_VDEVICE(NVIDIA, 0x0ab6), board_ahci }, /* MCP79 */
553 { PCI_VDEVICE(NVIDIA, 0x0ab7), board_ahci }, /* MCP79 */
554 { PCI_VDEVICE(NVIDIA, 0x0ab8), board_ahci }, /* MCP79 */
555 { PCI_VDEVICE(NVIDIA, 0x0ab9), board_ahci }, /* MCP79 */
556 { PCI_VDEVICE(NVIDIA, 0x0aba), board_ahci }, /* MCP79 */
557 { PCI_VDEVICE(NVIDIA, 0x0abb), board_ahci }, /* MCP79 */
558 { PCI_VDEVICE(NVIDIA, 0x0abc), board_ahci }, /* MCP79 */
559 { PCI_VDEVICE(NVIDIA, 0x0abd), board_ahci }, /* MCP79 */
560 { PCI_VDEVICE(NVIDIA, 0x0abe), board_ahci }, /* MCP79 */
561 { PCI_VDEVICE(NVIDIA, 0x0abf), board_ahci }, /* MCP79 */
562 { PCI_VDEVICE(NVIDIA, 0x0bc8), board_ahci }, /* MCP7B */
563 { PCI_VDEVICE(NVIDIA, 0x0bc9), board_ahci }, /* MCP7B */
564 { PCI_VDEVICE(NVIDIA, 0x0bca), board_ahci }, /* MCP7B */
565 { PCI_VDEVICE(NVIDIA, 0x0bcb), board_ahci }, /* MCP7B */
566 { PCI_VDEVICE(NVIDIA, 0x0bcc), board_ahci }, /* MCP7B */
567 { PCI_VDEVICE(NVIDIA, 0x0bcd), board_ahci }, /* MCP7B */
568 { PCI_VDEVICE(NVIDIA, 0x0bce), board_ahci }, /* MCP7B */
569 { PCI_VDEVICE(NVIDIA, 0x0bcf), board_ahci }, /* MCP7B */
570 { PCI_VDEVICE(NVIDIA, 0x0bd0), board_ahci }, /* MCP7B */
571 { PCI_VDEVICE(NVIDIA, 0x0bd1), board_ahci }, /* MCP7B */
572 { PCI_VDEVICE(NVIDIA, 0x0bd2), board_ahci }, /* MCP7B */
573 { PCI_VDEVICE(NVIDIA, 0x0bd3), board_ahci }, /* MCP7B */
576 { PCI_VDEVICE(SI, 0x1184), board_ahci }, /* SiS 966 */
577 { PCI_VDEVICE(SI, 0x1185), board_ahci }, /* SiS 966 */
578 { PCI_VDEVICE(SI, 0x0186), board_ahci }, /* SiS 968 */
581 { PCI_VDEVICE(MARVELL, 0x6145), board_ahci_mv }, /* 6145 */
582 { PCI_VDEVICE(MARVELL, 0x6121), board_ahci_mv }, /* 6121 */
584 /* Generic, PCI class code for AHCI */
585 { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
586 PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci },
588 { } /* terminate list */
592 static struct pci_driver ahci_pci_driver = {
594 .id_table = ahci_pci_tbl,
595 .probe = ahci_init_one,
596 .remove = ata_pci_remove_one,
598 .suspend = ahci_pci_device_suspend,
599 .resume = ahci_pci_device_resume,
604 static inline int ahci_nr_ports(u32 cap)
606 return (cap & 0x1f) + 1;
609 static inline void __iomem *__ahci_port_base(struct ata_host *host,
610 unsigned int port_no)
612 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
614 return mmio + 0x100 + (port_no * 0x80);
617 static inline void __iomem *ahci_port_base(struct ata_port *ap)
619 return __ahci_port_base(ap->host, ap->port_no);
622 static void ahci_enable_ahci(void __iomem *mmio)
626 /* turn on AHCI_EN */
627 tmp = readl(mmio + HOST_CTL);
628 if (!(tmp & HOST_AHCI_EN)) {
630 writel(tmp, mmio + HOST_CTL);
631 tmp = readl(mmio + HOST_CTL); /* flush && sanity check */
632 WARN_ON(!(tmp & HOST_AHCI_EN));
637 * ahci_save_initial_config - Save and fixup initial config values
638 * @pdev: target PCI device
639 * @hpriv: host private area to store config values
641 * Some registers containing configuration info might be setup by
642 * BIOS and might be cleared on reset. This function saves the
643 * initial values of those registers into @hpriv such that they
644 * can be restored after controller reset.
646 * If inconsistent, config values are fixed up by this function.
651 static void ahci_save_initial_config(struct pci_dev *pdev,
652 struct ahci_host_priv *hpriv)
654 void __iomem *mmio = pcim_iomap_table(pdev)[AHCI_PCI_BAR];
659 /* make sure AHCI mode is enabled before accessing CAP */
660 ahci_enable_ahci(mmio);
662 /* Values prefixed with saved_ are written back to host after
663 * reset. Values without are used for driver operation.
665 hpriv->saved_cap = cap = readl(mmio + HOST_CAP);
666 hpriv->saved_port_map = port_map = readl(mmio + HOST_PORTS_IMPL);
668 /* some chips have errata preventing 64bit use */
669 if ((cap & HOST_CAP_64) && (hpriv->flags & AHCI_HFLAG_32BIT_ONLY)) {
670 dev_printk(KERN_INFO, &pdev->dev,
671 "controller can't do 64bit DMA, forcing 32bit\n");
675 if ((cap & HOST_CAP_NCQ) && (hpriv->flags & AHCI_HFLAG_NO_NCQ)) {
676 dev_printk(KERN_INFO, &pdev->dev,
677 "controller can't do NCQ, turning off CAP_NCQ\n");
678 cap &= ~HOST_CAP_NCQ;
681 if ((cap & HOST_CAP_PMP) && (hpriv->flags & AHCI_HFLAG_NO_PMP)) {
682 dev_printk(KERN_INFO, &pdev->dev,
683 "controller can't do PMP, turning off CAP_PMP\n");
684 cap &= ~HOST_CAP_PMP;
688 * Temporary Marvell 6145 hack: PATA port presence
689 * is asserted through the standard AHCI port
690 * presence register, as bit 4 (counting from 0)
692 if (hpriv->flags & AHCI_HFLAG_MV_PATA) {
693 if (pdev->device == 0x6121)
697 dev_printk(KERN_ERR, &pdev->dev,
698 "MV_AHCI HACK: port_map %x -> %x\n",
705 /* cross check port_map and cap.n_ports */
709 for (i = 0; i < AHCI_MAX_PORTS; i++)
710 if (port_map & (1 << i))
713 /* If PI has more ports than n_ports, whine, clear
714 * port_map and let it be generated from n_ports.
716 if (map_ports > ahci_nr_ports(cap)) {
717 dev_printk(KERN_WARNING, &pdev->dev,
718 "implemented port map (0x%x) contains more "
719 "ports than nr_ports (%u), using nr_ports\n",
720 port_map, ahci_nr_ports(cap));
725 /* fabricate port_map from cap.nr_ports */
727 port_map = (1 << ahci_nr_ports(cap)) - 1;
728 dev_printk(KERN_WARNING, &pdev->dev,
729 "forcing PORTS_IMPL to 0x%x\n", port_map);
731 /* write the fixed up value to the PI register */
732 hpriv->saved_port_map = port_map;
735 /* record values to use during operation */
737 hpriv->port_map = port_map;
741 * ahci_restore_initial_config - Restore initial config
742 * @host: target ATA host
744 * Restore initial config stored by ahci_save_initial_config().
749 static void ahci_restore_initial_config(struct ata_host *host)
751 struct ahci_host_priv *hpriv = host->private_data;
752 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
754 writel(hpriv->saved_cap, mmio + HOST_CAP);
755 writel(hpriv->saved_port_map, mmio + HOST_PORTS_IMPL);
756 (void) readl(mmio + HOST_PORTS_IMPL); /* flush */
759 static unsigned ahci_scr_offset(struct ata_port *ap, unsigned int sc_reg)
761 static const int offset[] = {
762 [SCR_STATUS] = PORT_SCR_STAT,
763 [SCR_CONTROL] = PORT_SCR_CTL,
764 [SCR_ERROR] = PORT_SCR_ERR,
765 [SCR_ACTIVE] = PORT_SCR_ACT,
766 [SCR_NOTIFICATION] = PORT_SCR_NTF,
768 struct ahci_host_priv *hpriv = ap->host->private_data;
770 if (sc_reg < ARRAY_SIZE(offset) &&
771 (sc_reg != SCR_NOTIFICATION || (hpriv->cap & HOST_CAP_SNTF)))
772 return offset[sc_reg];
776 static int ahci_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
778 void __iomem *port_mmio = ahci_port_base(ap);
779 int offset = ahci_scr_offset(ap, sc_reg);
782 *val = readl(port_mmio + offset);
788 static int ahci_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
790 void __iomem *port_mmio = ahci_port_base(ap);
791 int offset = ahci_scr_offset(ap, sc_reg);
794 writel(val, port_mmio + offset);
800 static void ahci_start_engine(struct ata_port *ap)
802 void __iomem *port_mmio = ahci_port_base(ap);
806 tmp = readl(port_mmio + PORT_CMD);
807 tmp |= PORT_CMD_START;
808 writel(tmp, port_mmio + PORT_CMD);
809 readl(port_mmio + PORT_CMD); /* flush */
812 static int ahci_stop_engine(struct ata_port *ap)
814 void __iomem *port_mmio = ahci_port_base(ap);
817 tmp = readl(port_mmio + PORT_CMD);
819 /* check if the HBA is idle */
820 if ((tmp & (PORT_CMD_START | PORT_CMD_LIST_ON)) == 0)
823 /* setting HBA to idle */
824 tmp &= ~PORT_CMD_START;
825 writel(tmp, port_mmio + PORT_CMD);
827 /* wait for engine to stop. This could be as long as 500 msec */
828 tmp = ata_wait_register(port_mmio + PORT_CMD,
829 PORT_CMD_LIST_ON, PORT_CMD_LIST_ON, 1, 500);
830 if (tmp & PORT_CMD_LIST_ON)
836 static void ahci_start_fis_rx(struct ata_port *ap)
838 void __iomem *port_mmio = ahci_port_base(ap);
839 struct ahci_host_priv *hpriv = ap->host->private_data;
840 struct ahci_port_priv *pp = ap->private_data;
843 /* set FIS registers */
844 if (hpriv->cap & HOST_CAP_64)
845 writel((pp->cmd_slot_dma >> 16) >> 16,
846 port_mmio + PORT_LST_ADDR_HI);
847 writel(pp->cmd_slot_dma & 0xffffffff, port_mmio + PORT_LST_ADDR);
849 if (hpriv->cap & HOST_CAP_64)
850 writel((pp->rx_fis_dma >> 16) >> 16,
851 port_mmio + PORT_FIS_ADDR_HI);
852 writel(pp->rx_fis_dma & 0xffffffff, port_mmio + PORT_FIS_ADDR);
854 /* enable FIS reception */
855 tmp = readl(port_mmio + PORT_CMD);
856 tmp |= PORT_CMD_FIS_RX;
857 writel(tmp, port_mmio + PORT_CMD);
860 readl(port_mmio + PORT_CMD);
863 static int ahci_stop_fis_rx(struct ata_port *ap)
865 void __iomem *port_mmio = ahci_port_base(ap);
868 /* disable FIS reception */
869 tmp = readl(port_mmio + PORT_CMD);
870 tmp &= ~PORT_CMD_FIS_RX;
871 writel(tmp, port_mmio + PORT_CMD);
873 /* wait for completion, spec says 500ms, give it 1000 */
874 tmp = ata_wait_register(port_mmio + PORT_CMD, PORT_CMD_FIS_ON,
875 PORT_CMD_FIS_ON, 10, 1000);
876 if (tmp & PORT_CMD_FIS_ON)
882 static void ahci_power_up(struct ata_port *ap)
884 struct ahci_host_priv *hpriv = ap->host->private_data;
885 void __iomem *port_mmio = ahci_port_base(ap);
888 cmd = readl(port_mmio + PORT_CMD) & ~PORT_CMD_ICC_MASK;
891 if (hpriv->cap & HOST_CAP_SSS) {
892 cmd |= PORT_CMD_SPIN_UP;
893 writel(cmd, port_mmio + PORT_CMD);
897 writel(cmd | PORT_CMD_ICC_ACTIVE, port_mmio + PORT_CMD);
900 static void ahci_disable_alpm(struct ata_port *ap)
902 struct ahci_host_priv *hpriv = ap->host->private_data;
903 void __iomem *port_mmio = ahci_port_base(ap);
905 struct ahci_port_priv *pp = ap->private_data;
907 /* IPM bits should be disabled by libata-core */
908 /* get the existing command bits */
909 cmd = readl(port_mmio + PORT_CMD);
911 /* disable ALPM and ASP */
912 cmd &= ~PORT_CMD_ASP;
913 cmd &= ~PORT_CMD_ALPE;
915 /* force the interface back to active */
916 cmd |= PORT_CMD_ICC_ACTIVE;
918 /* write out new cmd value */
919 writel(cmd, port_mmio + PORT_CMD);
920 cmd = readl(port_mmio + PORT_CMD);
922 /* wait 10ms to be sure we've come out of any low power state */
925 /* clear out any PhyRdy stuff from interrupt status */
926 writel(PORT_IRQ_PHYRDY, port_mmio + PORT_IRQ_STAT);
928 /* go ahead and clean out PhyRdy Change from Serror too */
929 ahci_scr_write(ap, SCR_ERROR, ((1 << 16) | (1 << 18)));
932 * Clear flag to indicate that we should ignore all PhyRdy
935 hpriv->flags &= ~AHCI_HFLAG_NO_HOTPLUG;
938 * Enable interrupts on Phy Ready.
940 pp->intr_mask |= PORT_IRQ_PHYRDY;
941 writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
944 * don't change the link pm policy - we can be called
945 * just to turn of link pm temporarily
949 static int ahci_enable_alpm(struct ata_port *ap,
952 struct ahci_host_priv *hpriv = ap->host->private_data;
953 void __iomem *port_mmio = ahci_port_base(ap);
955 struct ahci_port_priv *pp = ap->private_data;
958 /* Make sure the host is capable of link power management */
959 if (!(hpriv->cap & HOST_CAP_ALPM))
963 case MAX_PERFORMANCE:
966 * if we came here with NOT_AVAILABLE,
967 * it just means this is the first time we
968 * have tried to enable - default to max performance,
969 * and let the user go to lower power modes on request.
971 ahci_disable_alpm(ap);
974 /* configure HBA to enter SLUMBER */
978 /* configure HBA to enter PARTIAL */
986 * Disable interrupts on Phy Ready. This keeps us from
987 * getting woken up due to spurious phy ready interrupts
988 * TBD - Hot plug should be done via polling now, is
989 * that even supported?
991 pp->intr_mask &= ~PORT_IRQ_PHYRDY;
992 writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
995 * Set a flag to indicate that we should ignore all PhyRdy
996 * state changes since these can happen now whenever we
999 hpriv->flags |= AHCI_HFLAG_NO_HOTPLUG;
1001 /* get the existing command bits */
1002 cmd = readl(port_mmio + PORT_CMD);
1005 * Set ASP based on Policy
1010 * Setting this bit will instruct the HBA to aggressively
1011 * enter a lower power link state when it's appropriate and
1012 * based on the value set above for ASP
1014 cmd |= PORT_CMD_ALPE;
1016 /* write out new cmd value */
1017 writel(cmd, port_mmio + PORT_CMD);
1018 cmd = readl(port_mmio + PORT_CMD);
1020 /* IPM bits should be set by libata-core */
1025 static void ahci_power_down(struct ata_port *ap)
1027 struct ahci_host_priv *hpriv = ap->host->private_data;
1028 void __iomem *port_mmio = ahci_port_base(ap);
1031 if (!(hpriv->cap & HOST_CAP_SSS))
1034 /* put device into listen mode, first set PxSCTL.DET to 0 */
1035 scontrol = readl(port_mmio + PORT_SCR_CTL);
1037 writel(scontrol, port_mmio + PORT_SCR_CTL);
1039 /* then set PxCMD.SUD to 0 */
1040 cmd = readl(port_mmio + PORT_CMD) & ~PORT_CMD_ICC_MASK;
1041 cmd &= ~PORT_CMD_SPIN_UP;
1042 writel(cmd, port_mmio + PORT_CMD);
1046 static void ahci_start_port(struct ata_port *ap)
1048 /* enable FIS reception */
1049 ahci_start_fis_rx(ap);
1052 ahci_start_engine(ap);
1055 static int ahci_deinit_port(struct ata_port *ap, const char **emsg)
1060 rc = ahci_stop_engine(ap);
1062 *emsg = "failed to stop engine";
1066 /* disable FIS reception */
1067 rc = ahci_stop_fis_rx(ap);
1069 *emsg = "failed stop FIS RX";
1076 static int ahci_reset_controller(struct ata_host *host)
1078 struct pci_dev *pdev = to_pci_dev(host->dev);
1079 struct ahci_host_priv *hpriv = host->private_data;
1080 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
1083 /* we must be in AHCI mode, before using anything
1084 * AHCI-specific, such as HOST_RESET.
1086 ahci_enable_ahci(mmio);
1088 /* global controller reset */
1089 if (!ahci_skip_host_reset) {
1090 tmp = readl(mmio + HOST_CTL);
1091 if ((tmp & HOST_RESET) == 0) {
1092 writel(tmp | HOST_RESET, mmio + HOST_CTL);
1093 readl(mmio + HOST_CTL); /* flush */
1096 /* reset must complete within 1 second, or
1097 * the hardware should be considered fried.
1101 tmp = readl(mmio + HOST_CTL);
1102 if (tmp & HOST_RESET) {
1103 dev_printk(KERN_ERR, host->dev,
1104 "controller reset failed (0x%x)\n", tmp);
1108 /* turn on AHCI mode */
1109 ahci_enable_ahci(mmio);
1111 /* Some registers might be cleared on reset. Restore
1114 ahci_restore_initial_config(host);
1116 dev_printk(KERN_INFO, host->dev,
1117 "skipping global host reset\n");
1119 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
1123 pci_read_config_word(pdev, 0x92, &tmp16);
1124 if ((tmp16 & hpriv->port_map) != hpriv->port_map) {
1125 tmp16 |= hpriv->port_map;
1126 pci_write_config_word(pdev, 0x92, tmp16);
1133 static void ahci_port_init(struct pci_dev *pdev, struct ata_port *ap,
1134 int port_no, void __iomem *mmio,
1135 void __iomem *port_mmio)
1137 const char *emsg = NULL;
1141 /* make sure port is not active */
1142 rc = ahci_deinit_port(ap, &emsg);
1144 dev_printk(KERN_WARNING, &pdev->dev,
1145 "%s (%d)\n", emsg, rc);
1148 tmp = readl(port_mmio + PORT_SCR_ERR);
1149 VPRINTK("PORT_SCR_ERR 0x%x\n", tmp);
1150 writel(tmp, port_mmio + PORT_SCR_ERR);
1152 /* clear port IRQ */
1153 tmp = readl(port_mmio + PORT_IRQ_STAT);
1154 VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp);
1156 writel(tmp, port_mmio + PORT_IRQ_STAT);
1158 writel(1 << port_no, mmio + HOST_IRQ_STAT);
1161 static void ahci_init_controller(struct ata_host *host)
1163 struct ahci_host_priv *hpriv = host->private_data;
1164 struct pci_dev *pdev = to_pci_dev(host->dev);
1165 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
1167 void __iomem *port_mmio;
1171 if (hpriv->flags & AHCI_HFLAG_MV_PATA) {
1172 if (pdev->device == 0x6121)
1176 port_mmio = __ahci_port_base(host, mv);
1178 writel(0, port_mmio + PORT_IRQ_MASK);
1180 /* clear port IRQ */
1181 tmp = readl(port_mmio + PORT_IRQ_STAT);
1182 VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp);
1184 writel(tmp, port_mmio + PORT_IRQ_STAT);
1187 for (i = 0; i < host->n_ports; i++) {
1188 struct ata_port *ap = host->ports[i];
1190 port_mmio = ahci_port_base(ap);
1191 if (ata_port_is_dummy(ap))
1194 ahci_port_init(pdev, ap, i, mmio, port_mmio);
1197 tmp = readl(mmio + HOST_CTL);
1198 VPRINTK("HOST_CTL 0x%x\n", tmp);
1199 writel(tmp | HOST_IRQ_EN, mmio + HOST_CTL);
1200 tmp = readl(mmio + HOST_CTL);
1201 VPRINTK("HOST_CTL 0x%x\n", tmp);
1204 static void ahci_dev_config(struct ata_device *dev)
1206 struct ahci_host_priv *hpriv = dev->link->ap->host->private_data;
1208 if (hpriv->flags & AHCI_HFLAG_SECT255) {
1209 dev->max_sectors = 255;
1210 ata_dev_printk(dev, KERN_INFO,
1211 "SB600 AHCI: limiting to 255 sectors per cmd\n");
1215 static unsigned int ahci_dev_classify(struct ata_port *ap)
1217 void __iomem *port_mmio = ahci_port_base(ap);
1218 struct ata_taskfile tf;
1221 tmp = readl(port_mmio + PORT_SIG);
1222 tf.lbah = (tmp >> 24) & 0xff;
1223 tf.lbam = (tmp >> 16) & 0xff;
1224 tf.lbal = (tmp >> 8) & 0xff;
1225 tf.nsect = (tmp) & 0xff;
1227 return ata_dev_classify(&tf);
1230 static void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag,
1233 dma_addr_t cmd_tbl_dma;
1235 cmd_tbl_dma = pp->cmd_tbl_dma + tag * AHCI_CMD_TBL_SZ;
1237 pp->cmd_slot[tag].opts = cpu_to_le32(opts);
1238 pp->cmd_slot[tag].status = 0;
1239 pp->cmd_slot[tag].tbl_addr = cpu_to_le32(cmd_tbl_dma & 0xffffffff);
1240 pp->cmd_slot[tag].tbl_addr_hi = cpu_to_le32((cmd_tbl_dma >> 16) >> 16);
1243 static int ahci_kick_engine(struct ata_port *ap, int force_restart)
1245 void __iomem *port_mmio = ap->ioaddr.cmd_addr;
1246 struct ahci_host_priv *hpriv = ap->host->private_data;
1250 /* do we need to kick the port? */
1251 busy = ahci_check_status(ap) & (ATA_BUSY | ATA_DRQ);
1252 if (!busy && !force_restart)
1256 rc = ahci_stop_engine(ap);
1260 /* need to do CLO? */
1266 if (!(hpriv->cap & HOST_CAP_CLO)) {
1272 tmp = readl(port_mmio + PORT_CMD);
1273 tmp |= PORT_CMD_CLO;
1274 writel(tmp, port_mmio + PORT_CMD);
1277 tmp = ata_wait_register(port_mmio + PORT_CMD,
1278 PORT_CMD_CLO, PORT_CMD_CLO, 1, 500);
1279 if (tmp & PORT_CMD_CLO)
1282 /* restart engine */
1284 ahci_start_engine(ap);
1288 static int ahci_exec_polled_cmd(struct ata_port *ap, int pmp,
1289 struct ata_taskfile *tf, int is_cmd, u16 flags,
1290 unsigned long timeout_msec)
1292 const u32 cmd_fis_len = 5; /* five dwords */
1293 struct ahci_port_priv *pp = ap->private_data;
1294 void __iomem *port_mmio = ahci_port_base(ap);
1295 u8 *fis = pp->cmd_tbl;
1298 /* prep the command */
1299 ata_tf_to_fis(tf, pmp, is_cmd, fis);
1300 ahci_fill_cmd_slot(pp, 0, cmd_fis_len | flags | (pmp << 12));
1303 writel(1, port_mmio + PORT_CMD_ISSUE);
1306 tmp = ata_wait_register(port_mmio + PORT_CMD_ISSUE, 0x1, 0x1,
1309 ahci_kick_engine(ap, 1);
1313 readl(port_mmio + PORT_CMD_ISSUE); /* flush */
1318 static int ahci_do_softreset(struct ata_link *link, unsigned int *class,
1319 int pmp, unsigned long deadline)
1321 struct ata_port *ap = link->ap;
1322 const char *reason = NULL;
1323 unsigned long now, msecs;
1324 struct ata_taskfile tf;
1329 if (ata_link_offline(link)) {
1330 DPRINTK("PHY reports no device\n");
1331 *class = ATA_DEV_NONE;
1335 /* prepare for SRST (AHCI-1.1 10.4.1) */
1336 rc = ahci_kick_engine(ap, 1);
1337 if (rc && rc != -EOPNOTSUPP)
1338 ata_link_printk(link, KERN_WARNING,
1339 "failed to reset engine (errno=%d)\n", rc);
1341 ata_tf_init(link->device, &tf);
1343 /* issue the first D2H Register FIS */
1346 if (time_after(now, deadline))
1347 msecs = jiffies_to_msecs(deadline - now);
1350 if (ahci_exec_polled_cmd(ap, pmp, &tf, 0,
1351 AHCI_CMD_RESET | AHCI_CMD_CLR_BUSY, msecs)) {
1353 reason = "1st FIS failed";
1357 /* spec says at least 5us, but be generous and sleep for 1ms */
1360 /* issue the second D2H Register FIS */
1361 tf.ctl &= ~ATA_SRST;
1362 ahci_exec_polled_cmd(ap, pmp, &tf, 0, 0, 0);
1364 /* wait a while before checking status */
1365 ata_wait_after_reset(ap, deadline);
1367 rc = ata_wait_ready(ap, deadline);
1368 /* link occupied, -ENODEV too is an error */
1370 reason = "device not ready";
1373 *class = ahci_dev_classify(ap);
1375 DPRINTK("EXIT, class=%u\n", *class);
1379 ata_link_printk(link, KERN_ERR, "softreset failed (%s)\n", reason);
1383 static int ahci_softreset(struct ata_link *link, unsigned int *class,
1384 unsigned long deadline)
1388 if (link->ap->flags & ATA_FLAG_PMP)
1389 pmp = SATA_PMP_CTRL_PORT;
1391 return ahci_do_softreset(link, class, pmp, deadline);
1394 static int ahci_hardreset(struct ata_link *link, unsigned int *class,
1395 unsigned long deadline)
1397 struct ata_port *ap = link->ap;
1398 struct ahci_port_priv *pp = ap->private_data;
1399 u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
1400 struct ata_taskfile tf;
1405 ahci_stop_engine(ap);
1407 /* clear D2H reception area to properly wait for D2H FIS */
1408 ata_tf_init(link->device, &tf);
1410 ata_tf_to_fis(&tf, 0, 0, d2h_fis);
1412 rc = sata_std_hardreset(link, class, deadline);
1414 ahci_start_engine(ap);
1416 if (rc == 0 && ata_link_online(link))
1417 *class = ahci_dev_classify(ap);
1418 if (rc != -EAGAIN && *class == ATA_DEV_UNKNOWN)
1419 *class = ATA_DEV_NONE;
1421 DPRINTK("EXIT, rc=%d, class=%u\n", rc, *class);
1425 static int ahci_vt8251_hardreset(struct ata_link *link, unsigned int *class,
1426 unsigned long deadline)
1428 struct ata_port *ap = link->ap;
1434 ahci_stop_engine(ap);
1436 rc = sata_link_hardreset(link, sata_ehc_deb_timing(&link->eh_context),
1439 /* vt8251 needs SError cleared for the port to operate */
1440 ahci_scr_read(ap, SCR_ERROR, &serror);
1441 ahci_scr_write(ap, SCR_ERROR, serror);
1443 ahci_start_engine(ap);
1445 DPRINTK("EXIT, rc=%d, class=%u\n", rc, *class);
1447 /* vt8251 doesn't clear BSY on signature FIS reception,
1448 * request follow-up softreset.
1450 return rc ?: -EAGAIN;
1453 static int ahci_p5wdh_hardreset(struct ata_link *link, unsigned int *class,
1454 unsigned long deadline)
1456 struct ata_port *ap = link->ap;
1457 struct ahci_port_priv *pp = ap->private_data;
1458 u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
1459 struct ata_taskfile tf;
1462 ahci_stop_engine(ap);
1464 /* clear D2H reception area to properly wait for D2H FIS */
1465 ata_tf_init(link->device, &tf);
1467 ata_tf_to_fis(&tf, 0, 0, d2h_fis);
1469 rc = sata_link_hardreset(link, sata_ehc_deb_timing(&link->eh_context),
1472 ahci_start_engine(ap);
1474 if (rc || ata_link_offline(link))
1477 /* spec mandates ">= 2ms" before checking status */
1480 /* The pseudo configuration device on SIMG4726 attached to
1481 * ASUS P5W-DH Deluxe doesn't send signature FIS after
1482 * hardreset if no device is attached to the first downstream
1483 * port && the pseudo device locks up on SRST w/ PMP==0. To
1484 * work around this, wait for !BSY only briefly. If BSY isn't
1485 * cleared, perform CLO and proceed to IDENTIFY (achieved by
1486 * ATA_LFLAG_NO_SRST and ATA_LFLAG_ASSUME_ATA).
1488 * Wait for two seconds. Devices attached to downstream port
1489 * which can't process the following IDENTIFY after this will
1490 * have to be reset again. For most cases, this should
1491 * suffice while making probing snappish enough.
1493 rc = ata_wait_ready(ap, jiffies + 2 * HZ);
1495 ahci_kick_engine(ap, 0);
1500 static void ahci_postreset(struct ata_link *link, unsigned int *class)
1502 struct ata_port *ap = link->ap;
1503 void __iomem *port_mmio = ahci_port_base(ap);
1506 ata_std_postreset(link, class);
1508 /* Make sure port's ATAPI bit is set appropriately */
1509 new_tmp = tmp = readl(port_mmio + PORT_CMD);
1510 if (*class == ATA_DEV_ATAPI)
1511 new_tmp |= PORT_CMD_ATAPI;
1513 new_tmp &= ~PORT_CMD_ATAPI;
1514 if (new_tmp != tmp) {
1515 writel(new_tmp, port_mmio + PORT_CMD);
1516 readl(port_mmio + PORT_CMD); /* flush */
1520 static int ahci_pmp_softreset(struct ata_link *link, unsigned int *class,
1521 unsigned long deadline)
1523 return ahci_do_softreset(link, class, link->pmp, deadline);
1526 static u8 ahci_check_status(struct ata_port *ap)
1528 void __iomem *mmio = ap->ioaddr.cmd_addr;
1530 return readl(mmio + PORT_TFDATA) & 0xFF;
1533 static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
1535 struct ahci_port_priv *pp = ap->private_data;
1536 u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
1538 ata_tf_from_fis(d2h_fis, tf);
1541 static unsigned int ahci_fill_sg(struct ata_queued_cmd *qc, void *cmd_tbl)
1543 struct scatterlist *sg;
1544 struct ahci_sg *ahci_sg = cmd_tbl + AHCI_CMD_TBL_HDR_SZ;
1550 * Next, the S/G list.
1552 for_each_sg(qc->sg, sg, qc->n_elem, si) {
1553 dma_addr_t addr = sg_dma_address(sg);
1554 u32 sg_len = sg_dma_len(sg);
1556 ahci_sg[si].addr = cpu_to_le32(addr & 0xffffffff);
1557 ahci_sg[si].addr_hi = cpu_to_le32((addr >> 16) >> 16);
1558 ahci_sg[si].flags_size = cpu_to_le32(sg_len - 1);
1564 static void ahci_qc_prep(struct ata_queued_cmd *qc)
1566 struct ata_port *ap = qc->ap;
1567 struct ahci_port_priv *pp = ap->private_data;
1568 int is_atapi = ata_is_atapi(qc->tf.protocol);
1571 const u32 cmd_fis_len = 5; /* five dwords */
1572 unsigned int n_elem;
1575 * Fill in command table information. First, the header,
1576 * a SATA Register - Host to Device command FIS.
1578 cmd_tbl = pp->cmd_tbl + qc->tag * AHCI_CMD_TBL_SZ;
1580 ata_tf_to_fis(&qc->tf, qc->dev->link->pmp, 1, cmd_tbl);
1582 memset(cmd_tbl + AHCI_CMD_TBL_CDB, 0, 32);
1583 memcpy(cmd_tbl + AHCI_CMD_TBL_CDB, qc->cdb, qc->dev->cdb_len);
1587 if (qc->flags & ATA_QCFLAG_DMAMAP)
1588 n_elem = ahci_fill_sg(qc, cmd_tbl);
1591 * Fill in command slot information.
1593 opts = cmd_fis_len | n_elem << 16 | (qc->dev->link->pmp << 12);
1594 if (qc->tf.flags & ATA_TFLAG_WRITE)
1595 opts |= AHCI_CMD_WRITE;
1597 opts |= AHCI_CMD_ATAPI | AHCI_CMD_PREFETCH;
1599 ahci_fill_cmd_slot(pp, qc->tag, opts);
1602 static void ahci_error_intr(struct ata_port *ap, u32 irq_stat)
1604 struct ahci_host_priv *hpriv = ap->host->private_data;
1605 struct ahci_port_priv *pp = ap->private_data;
1606 struct ata_eh_info *host_ehi = &ap->link.eh_info;
1607 struct ata_link *link = NULL;
1608 struct ata_queued_cmd *active_qc;
1609 struct ata_eh_info *active_ehi;
1612 /* determine active link */
1613 ata_port_for_each_link(link, ap)
1614 if (ata_link_active(link))
1619 active_qc = ata_qc_from_tag(ap, link->active_tag);
1620 active_ehi = &link->eh_info;
1622 /* record irq stat */
1623 ata_ehi_clear_desc(host_ehi);
1624 ata_ehi_push_desc(host_ehi, "irq_stat 0x%08x", irq_stat);
1626 /* AHCI needs SError cleared; otherwise, it might lock up */
1627 ahci_scr_read(ap, SCR_ERROR, &serror);
1628 ahci_scr_write(ap, SCR_ERROR, serror);
1629 host_ehi->serror |= serror;
1631 /* some controllers set IRQ_IF_ERR on device errors, ignore it */
1632 if (hpriv->flags & AHCI_HFLAG_IGN_IRQ_IF_ERR)
1633 irq_stat &= ~PORT_IRQ_IF_ERR;
1635 if (irq_stat & PORT_IRQ_TF_ERR) {
1636 /* If qc is active, charge it; otherwise, the active
1637 * link. There's no active qc on NCQ errors. It will
1638 * be determined by EH by reading log page 10h.
1641 active_qc->err_mask |= AC_ERR_DEV;
1643 active_ehi->err_mask |= AC_ERR_DEV;
1645 if (hpriv->flags & AHCI_HFLAG_IGN_SERR_INTERNAL)
1646 host_ehi->serror &= ~SERR_INTERNAL;
1649 if (irq_stat & PORT_IRQ_UNK_FIS) {
1650 u32 *unk = (u32 *)(pp->rx_fis + RX_FIS_UNK);
1652 active_ehi->err_mask |= AC_ERR_HSM;
1653 active_ehi->action |= ATA_EH_RESET;
1654 ata_ehi_push_desc(active_ehi,
1655 "unknown FIS %08x %08x %08x %08x" ,
1656 unk[0], unk[1], unk[2], unk[3]);
1659 if (ap->nr_pmp_links && (irq_stat & PORT_IRQ_BAD_PMP)) {
1660 active_ehi->err_mask |= AC_ERR_HSM;
1661 active_ehi->action |= ATA_EH_RESET;
1662 ata_ehi_push_desc(active_ehi, "incorrect PMP");
1665 if (irq_stat & (PORT_IRQ_HBUS_ERR | PORT_IRQ_HBUS_DATA_ERR)) {
1666 host_ehi->err_mask |= AC_ERR_HOST_BUS;
1667 host_ehi->action |= ATA_EH_RESET;
1668 ata_ehi_push_desc(host_ehi, "host bus error");
1671 if (irq_stat & PORT_IRQ_IF_ERR) {
1672 host_ehi->err_mask |= AC_ERR_ATA_BUS;
1673 host_ehi->action |= ATA_EH_RESET;
1674 ata_ehi_push_desc(host_ehi, "interface fatal error");
1677 if (irq_stat & (PORT_IRQ_CONNECT | PORT_IRQ_PHYRDY)) {
1678 ata_ehi_hotplugged(host_ehi);
1679 ata_ehi_push_desc(host_ehi, "%s",
1680 irq_stat & PORT_IRQ_CONNECT ?
1681 "connection status changed" : "PHY RDY changed");
1684 /* okay, let's hand over to EH */
1686 if (irq_stat & PORT_IRQ_FREEZE)
1687 ata_port_freeze(ap);
1692 static void ahci_port_intr(struct ata_port *ap)
1694 void __iomem *port_mmio = ap->ioaddr.cmd_addr;
1695 struct ata_eh_info *ehi = &ap->link.eh_info;
1696 struct ahci_port_priv *pp = ap->private_data;
1697 struct ahci_host_priv *hpriv = ap->host->private_data;
1698 int resetting = !!(ap->pflags & ATA_PFLAG_RESETTING);
1699 u32 status, qc_active;
1702 status = readl(port_mmio + PORT_IRQ_STAT);
1703 writel(status, port_mmio + PORT_IRQ_STAT);
1705 /* ignore BAD_PMP while resetting */
1706 if (unlikely(resetting))
1707 status &= ~PORT_IRQ_BAD_PMP;
1709 /* If we are getting PhyRdy, this is
1710 * just a power state change, we should
1711 * clear out this, plus the PhyRdy/Comm
1712 * Wake bits from Serror
1714 if ((hpriv->flags & AHCI_HFLAG_NO_HOTPLUG) &&
1715 (status & PORT_IRQ_PHYRDY)) {
1716 status &= ~PORT_IRQ_PHYRDY;
1717 ahci_scr_write(ap, SCR_ERROR, ((1 << 16) | (1 << 18)));
1720 if (unlikely(status & PORT_IRQ_ERROR)) {
1721 ahci_error_intr(ap, status);
1725 if (status & PORT_IRQ_SDB_FIS) {
1726 /* If SNotification is available, leave notification
1727 * handling to sata_async_notification(). If not,
1728 * emulate it by snooping SDB FIS RX area.
1730 * Snooping FIS RX area is probably cheaper than
1731 * poking SNotification but some constrollers which
1732 * implement SNotification, ICH9 for example, don't
1733 * store AN SDB FIS into receive area.
1735 if (hpriv->cap & HOST_CAP_SNTF)
1736 sata_async_notification(ap);
1738 /* If the 'N' bit in word 0 of the FIS is set,
1739 * we just received asynchronous notification.
1740 * Tell libata about it.
1742 const __le32 *f = pp->rx_fis + RX_FIS_SDB;
1743 u32 f0 = le32_to_cpu(f[0]);
1746 sata_async_notification(ap);
1750 /* pp->active_link is valid iff any command is in flight */
1751 if (ap->qc_active && pp->active_link->sactive)
1752 qc_active = readl(port_mmio + PORT_SCR_ACT);
1754 qc_active = readl(port_mmio + PORT_CMD_ISSUE);
1756 rc = ata_qc_complete_multiple(ap, qc_active, NULL);
1758 /* while resetting, invalid completions are expected */
1759 if (unlikely(rc < 0 && !resetting)) {
1760 ehi->err_mask |= AC_ERR_HSM;
1761 ehi->action |= ATA_EH_RESET;
1762 ata_port_freeze(ap);
1766 static irqreturn_t ahci_interrupt(int irq, void *dev_instance)
1768 struct ata_host *host = dev_instance;
1769 struct ahci_host_priv *hpriv;
1770 unsigned int i, handled = 0;
1772 u32 irq_stat, irq_ack = 0;
1776 hpriv = host->private_data;
1777 mmio = host->iomap[AHCI_PCI_BAR];
1779 /* sigh. 0xffffffff is a valid return from h/w */
1780 irq_stat = readl(mmio + HOST_IRQ_STAT);
1781 irq_stat &= hpriv->port_map;
1785 spin_lock(&host->lock);
1787 for (i = 0; i < host->n_ports; i++) {
1788 struct ata_port *ap;
1790 if (!(irq_stat & (1 << i)))
1793 ap = host->ports[i];
1796 VPRINTK("port %u\n", i);
1798 VPRINTK("port %u (no irq)\n", i);
1799 if (ata_ratelimit())
1800 dev_printk(KERN_WARNING, host->dev,
1801 "interrupt on disabled port %u\n", i);
1804 irq_ack |= (1 << i);
1808 writel(irq_ack, mmio + HOST_IRQ_STAT);
1812 spin_unlock(&host->lock);
1816 return IRQ_RETVAL(handled);
1819 static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc)
1821 struct ata_port *ap = qc->ap;
1822 void __iomem *port_mmio = ahci_port_base(ap);
1823 struct ahci_port_priv *pp = ap->private_data;
1825 /* Keep track of the currently active link. It will be used
1826 * in completion path to determine whether NCQ phase is in
1829 pp->active_link = qc->dev->link;
1831 if (qc->tf.protocol == ATA_PROT_NCQ)
1832 writel(1 << qc->tag, port_mmio + PORT_SCR_ACT);
1833 writel(1 << qc->tag, port_mmio + PORT_CMD_ISSUE);
1834 readl(port_mmio + PORT_CMD_ISSUE); /* flush */
1839 static void ahci_freeze(struct ata_port *ap)
1841 void __iomem *port_mmio = ahci_port_base(ap);
1844 writel(0, port_mmio + PORT_IRQ_MASK);
1847 static void ahci_thaw(struct ata_port *ap)
1849 void __iomem *mmio = ap->host->iomap[AHCI_PCI_BAR];
1850 void __iomem *port_mmio = ahci_port_base(ap);
1852 struct ahci_port_priv *pp = ap->private_data;
1855 tmp = readl(port_mmio + PORT_IRQ_STAT);
1856 writel(tmp, port_mmio + PORT_IRQ_STAT);
1857 writel(1 << ap->port_no, mmio + HOST_IRQ_STAT);
1859 /* turn IRQ back on */
1860 writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
1863 static void ahci_error_handler(struct ata_port *ap)
1865 if (!(ap->pflags & ATA_PFLAG_FROZEN)) {
1866 /* restart engine */
1867 ahci_stop_engine(ap);
1868 ahci_start_engine(ap);
1871 /* perform recovery */
1872 sata_pmp_do_eh(ap, ata_std_prereset, ahci_softreset,
1873 ahci_hardreset, ahci_postreset,
1874 sata_pmp_std_prereset, ahci_pmp_softreset,
1875 sata_pmp_std_hardreset, sata_pmp_std_postreset);
1878 static void ahci_vt8251_error_handler(struct ata_port *ap)
1880 if (!(ap->pflags & ATA_PFLAG_FROZEN)) {
1881 /* restart engine */
1882 ahci_stop_engine(ap);
1883 ahci_start_engine(ap);
1886 /* perform recovery */
1887 ata_do_eh(ap, ata_std_prereset, ahci_softreset, ahci_vt8251_hardreset,
1891 static void ahci_p5wdh_error_handler(struct ata_port *ap)
1893 if (!(ap->pflags & ATA_PFLAG_FROZEN)) {
1894 /* restart engine */
1895 ahci_stop_engine(ap);
1896 ahci_start_engine(ap);
1899 /* perform recovery */
1900 ata_do_eh(ap, ata_std_prereset, ahci_softreset, ahci_p5wdh_hardreset,
1904 static void ahci_post_internal_cmd(struct ata_queued_cmd *qc)
1906 struct ata_port *ap = qc->ap;
1908 /* make DMA engine forget about the failed command */
1909 if (qc->flags & ATA_QCFLAG_FAILED)
1910 ahci_kick_engine(ap, 1);
1913 static void ahci_pmp_attach(struct ata_port *ap)
1915 void __iomem *port_mmio = ahci_port_base(ap);
1916 struct ahci_port_priv *pp = ap->private_data;
1919 cmd = readl(port_mmio + PORT_CMD);
1920 cmd |= PORT_CMD_PMP;
1921 writel(cmd, port_mmio + PORT_CMD);
1923 pp->intr_mask |= PORT_IRQ_BAD_PMP;
1924 writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
1927 static void ahci_pmp_detach(struct ata_port *ap)
1929 void __iomem *port_mmio = ahci_port_base(ap);
1930 struct ahci_port_priv *pp = ap->private_data;
1933 cmd = readl(port_mmio + PORT_CMD);
1934 cmd &= ~PORT_CMD_PMP;
1935 writel(cmd, port_mmio + PORT_CMD);
1937 pp->intr_mask &= ~PORT_IRQ_BAD_PMP;
1938 writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
1941 static int ahci_port_resume(struct ata_port *ap)
1944 ahci_start_port(ap);
1946 if (ap->nr_pmp_links)
1947 ahci_pmp_attach(ap);
1949 ahci_pmp_detach(ap);
1955 static int ahci_port_suspend(struct ata_port *ap, pm_message_t mesg)
1957 const char *emsg = NULL;
1960 rc = ahci_deinit_port(ap, &emsg);
1962 ahci_power_down(ap);
1964 ata_port_printk(ap, KERN_ERR, "%s (%d)\n", emsg, rc);
1965 ahci_start_port(ap);
1971 static int ahci_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
1973 struct ata_host *host = dev_get_drvdata(&pdev->dev);
1974 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
1977 if (mesg.event & PM_EVENT_SLEEP) {
1978 /* AHCI spec rev1.1 section 8.3.3:
1979 * Software must disable interrupts prior to requesting a
1980 * transition of the HBA to D3 state.
1982 ctl = readl(mmio + HOST_CTL);
1983 ctl &= ~HOST_IRQ_EN;
1984 writel(ctl, mmio + HOST_CTL);
1985 readl(mmio + HOST_CTL); /* flush */
1988 return ata_pci_device_suspend(pdev, mesg);
1991 static int ahci_pci_device_resume(struct pci_dev *pdev)
1993 struct ata_host *host = dev_get_drvdata(&pdev->dev);
1996 rc = ata_pci_device_do_resume(pdev);
2000 if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
2001 rc = ahci_reset_controller(host);
2005 ahci_init_controller(host);
2008 ata_host_resume(host);
2014 static int ahci_port_start(struct ata_port *ap)
2016 struct device *dev = ap->host->dev;
2017 struct ahci_port_priv *pp;
2021 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
2025 mem = dmam_alloc_coherent(dev, AHCI_PORT_PRIV_DMA_SZ, &mem_dma,
2029 memset(mem, 0, AHCI_PORT_PRIV_DMA_SZ);
2032 * First item in chunk of DMA memory: 32-slot command table,
2033 * 32 bytes each in size
2036 pp->cmd_slot_dma = mem_dma;
2038 mem += AHCI_CMD_SLOT_SZ;
2039 mem_dma += AHCI_CMD_SLOT_SZ;
2042 * Second item: Received-FIS area
2045 pp->rx_fis_dma = mem_dma;
2047 mem += AHCI_RX_FIS_SZ;
2048 mem_dma += AHCI_RX_FIS_SZ;
2051 * Third item: data area for storing a single command
2052 * and its scatter-gather table
2055 pp->cmd_tbl_dma = mem_dma;
2058 * Save off initial list of interrupts to be enabled.
2059 * This could be changed later
2061 pp->intr_mask = DEF_PORT_IRQ;
2063 ap->private_data = pp;
2065 /* engage engines, captain */
2066 return ahci_port_resume(ap);
2069 static void ahci_port_stop(struct ata_port *ap)
2071 const char *emsg = NULL;
2074 /* de-initialize port */
2075 rc = ahci_deinit_port(ap, &emsg);
2077 ata_port_printk(ap, KERN_WARNING, "%s (%d)\n", emsg, rc);
2080 static int ahci_configure_dma_masks(struct pci_dev *pdev, int using_dac)
2085 !pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
2086 rc = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
2088 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
2090 dev_printk(KERN_ERR, &pdev->dev,
2091 "64-bit DMA enable failed\n");
2096 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
2098 dev_printk(KERN_ERR, &pdev->dev,
2099 "32-bit DMA enable failed\n");
2102 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
2104 dev_printk(KERN_ERR, &pdev->dev,
2105 "32-bit consistent DMA enable failed\n");
2112 static void ahci_print_info(struct ata_host *host)
2114 struct ahci_host_priv *hpriv = host->private_data;
2115 struct pci_dev *pdev = to_pci_dev(host->dev);
2116 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
2117 u32 vers, cap, impl, speed;
2118 const char *speed_s;
2122 vers = readl(mmio + HOST_VERSION);
2124 impl = hpriv->port_map;
2126 speed = (cap >> 20) & 0xf;
2129 else if (speed == 2)
2134 pci_read_config_word(pdev, 0x0a, &cc);
2135 if (cc == PCI_CLASS_STORAGE_IDE)
2137 else if (cc == PCI_CLASS_STORAGE_SATA)
2139 else if (cc == PCI_CLASS_STORAGE_RAID)
2144 dev_printk(KERN_INFO, &pdev->dev,
2145 "AHCI %02x%02x.%02x%02x "
2146 "%u slots %u ports %s Gbps 0x%x impl %s mode\n"
2149 (vers >> 24) & 0xff,
2150 (vers >> 16) & 0xff,
2154 ((cap >> 8) & 0x1f) + 1,
2160 dev_printk(KERN_INFO, &pdev->dev,
2166 cap & (1 << 31) ? "64bit " : "",
2167 cap & (1 << 30) ? "ncq " : "",
2168 cap & (1 << 29) ? "sntf " : "",
2169 cap & (1 << 28) ? "ilck " : "",
2170 cap & (1 << 27) ? "stag " : "",
2171 cap & (1 << 26) ? "pm " : "",
2172 cap & (1 << 25) ? "led " : "",
2174 cap & (1 << 24) ? "clo " : "",
2175 cap & (1 << 19) ? "nz " : "",
2176 cap & (1 << 18) ? "only " : "",
2177 cap & (1 << 17) ? "pmp " : "",
2178 cap & (1 << 15) ? "pio " : "",
2179 cap & (1 << 14) ? "slum " : "",
2180 cap & (1 << 13) ? "part " : ""
2184 /* On ASUS P5W DH Deluxe, the second port of PCI device 00:1f.2 is
2185 * hardwired to on-board SIMG 4726. The chipset is ICH8 and doesn't
2186 * support PMP and the 4726 either directly exports the device
2187 * attached to the first downstream port or acts as a hardware storage
2188 * controller and emulate a single ATA device (can be RAID 0/1 or some
2189 * other configuration).
2191 * When there's no device attached to the first downstream port of the
2192 * 4726, "Config Disk" appears, which is a pseudo ATA device to
2193 * configure the 4726. However, ATA emulation of the device is very
2194 * lame. It doesn't send signature D2H Reg FIS after the initial
2195 * hardreset, pukes on SRST w/ PMP==0 and has bunch of other issues.
2197 * The following function works around the problem by always using
2198 * hardreset on the port and not depending on receiving signature FIS
2199 * afterward. If signature FIS isn't received soon, ATA class is
2200 * assumed without follow-up softreset.
2202 static void ahci_p5wdh_workaround(struct ata_host *host)
2204 static struct dmi_system_id sysids[] = {
2206 .ident = "P5W DH Deluxe",
2208 DMI_MATCH(DMI_SYS_VENDOR,
2209 "ASUSTEK COMPUTER INC"),
2210 DMI_MATCH(DMI_PRODUCT_NAME, "P5W DH Deluxe"),
2215 struct pci_dev *pdev = to_pci_dev(host->dev);
2217 if (pdev->bus->number == 0 && pdev->devfn == PCI_DEVFN(0x1f, 2) &&
2218 dmi_check_system(sysids)) {
2219 struct ata_port *ap = host->ports[1];
2221 dev_printk(KERN_INFO, &pdev->dev, "enabling ASUS P5W DH "
2222 "Deluxe on-board SIMG4726 workaround\n");
2224 ap->ops = &ahci_p5wdh_ops;
2225 ap->link.flags |= ATA_LFLAG_NO_SRST | ATA_LFLAG_ASSUME_ATA;
2229 static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
2231 static int printed_version;
2232 struct ata_port_info pi = ahci_port_info[ent->driver_data];
2233 const struct ata_port_info *ppi[] = { &pi, NULL };
2234 struct device *dev = &pdev->dev;
2235 struct ahci_host_priv *hpriv;
2236 struct ata_host *host;
2241 WARN_ON(ATA_MAX_QUEUE > AHCI_MAX_CMDS);
2243 if (!printed_version++)
2244 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
2246 /* acquire resources */
2247 rc = pcim_enable_device(pdev);
2251 /* AHCI controllers often implement SFF compatible interface.
2252 * Grab all PCI BARs just in case.
2254 rc = pcim_iomap_regions_request_all(pdev, 1 << AHCI_PCI_BAR, DRV_NAME);
2256 pcim_pin_device(pdev);
2260 if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
2261 (pdev->device == 0x2652 || pdev->device == 0x2653)) {
2264 /* ICH6s share the same PCI ID for both piix and ahci
2265 * modes. Enabling ahci mode while MAP indicates
2266 * combined mode is a bad idea. Yield to ata_piix.
2268 pci_read_config_byte(pdev, ICH_MAP, &map);
2270 dev_printk(KERN_INFO, &pdev->dev, "controller is in "
2271 "combined mode, can't enable AHCI mode\n");
2276 hpriv = devm_kzalloc(dev, sizeof(*hpriv), GFP_KERNEL);
2279 hpriv->flags |= (unsigned long)pi.private_data;
2281 if ((hpriv->flags & AHCI_HFLAG_NO_MSI) || pci_enable_msi(pdev))
2284 /* save initial config */
2285 ahci_save_initial_config(pdev, hpriv);
2288 if (hpriv->cap & HOST_CAP_NCQ)
2289 pi.flags |= ATA_FLAG_NCQ;
2291 if (hpriv->cap & HOST_CAP_PMP)
2292 pi.flags |= ATA_FLAG_PMP;
2294 /* CAP.NP sometimes indicate the index of the last enabled
2295 * port, at other times, that of the last possible port, so
2296 * determining the maximum port number requires looking at
2297 * both CAP.NP and port_map.
2299 n_ports = max(ahci_nr_ports(hpriv->cap), fls(hpriv->port_map));
2301 host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
2304 host->iomap = pcim_iomap_table(pdev);
2305 host->private_data = hpriv;
2307 for (i = 0; i < host->n_ports; i++) {
2308 struct ata_port *ap = host->ports[i];
2309 void __iomem *port_mmio = ahci_port_base(ap);
2311 ata_port_pbar_desc(ap, AHCI_PCI_BAR, -1, "abar");
2312 ata_port_pbar_desc(ap, AHCI_PCI_BAR,
2313 0x100 + ap->port_no * 0x80, "port");
2315 /* set initial link pm policy */
2316 ap->pm_policy = NOT_AVAILABLE;
2318 /* standard SATA port setup */
2319 if (hpriv->port_map & (1 << i))
2320 ap->ioaddr.cmd_addr = port_mmio;
2322 /* disabled/not-implemented port */
2324 ap->ops = &ata_dummy_port_ops;
2327 /* apply workaround for ASUS P5W DH Deluxe mainboard */
2328 ahci_p5wdh_workaround(host);
2330 /* initialize adapter */
2331 rc = ahci_configure_dma_masks(pdev, hpriv->cap & HOST_CAP_64);
2335 rc = ahci_reset_controller(host);
2339 ahci_init_controller(host);
2340 ahci_print_info(host);
2342 pci_set_master(pdev);
2343 return ata_host_activate(host, pdev->irq, ahci_interrupt, IRQF_SHARED,
2347 static int __init ahci_init(void)
2349 return pci_register_driver(&ahci_pci_driver);
2352 static void __exit ahci_exit(void)
2354 pci_unregister_driver(&ahci_pci_driver);
2358 MODULE_AUTHOR("Jeff Garzik");
2359 MODULE_DESCRIPTION("AHCI SATA low-level driver");
2360 MODULE_LICENSE("GPL");
2361 MODULE_DEVICE_TABLE(pci, ahci_pci_tbl);
2362 MODULE_VERSION(DRV_VERSION);
2364 module_init(ahci_init);
2365 module_exit(ahci_exit);