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,
65 AHCI_USE_CLUSTERING = 1,
68 AHCI_CMD_SLOT_SZ = AHCI_MAX_CMDS * AHCI_CMD_SZ,
70 AHCI_CMD_TBL_CDB = 0x40,
71 AHCI_CMD_TBL_HDR_SZ = 0x80,
72 AHCI_CMD_TBL_SZ = AHCI_CMD_TBL_HDR_SZ + (AHCI_MAX_SG * 16),
73 AHCI_CMD_TBL_AR_SZ = AHCI_CMD_TBL_SZ * AHCI_MAX_CMDS,
74 AHCI_PORT_PRIV_DMA_SZ = AHCI_CMD_SLOT_SZ + AHCI_CMD_TBL_AR_SZ +
76 AHCI_IRQ_ON_SG = (1 << 31),
77 AHCI_CMD_ATAPI = (1 << 5),
78 AHCI_CMD_WRITE = (1 << 6),
79 AHCI_CMD_PREFETCH = (1 << 7),
80 AHCI_CMD_RESET = (1 << 8),
81 AHCI_CMD_CLR_BUSY = (1 << 10),
83 RX_FIS_D2H_REG = 0x40, /* offset of D2H Register FIS data */
84 RX_FIS_SDB = 0x58, /* offset of SDB FIS data */
85 RX_FIS_UNK = 0x60, /* offset of Unknown FIS data */
88 board_ahci_vt8251 = 1,
89 board_ahci_ign_iferr = 2,
94 /* global controller registers */
95 HOST_CAP = 0x00, /* host capabilities */
96 HOST_CTL = 0x04, /* global host control */
97 HOST_IRQ_STAT = 0x08, /* interrupt status */
98 HOST_PORTS_IMPL = 0x0c, /* bitmap of implemented ports */
99 HOST_VERSION = 0x10, /* AHCI spec. version compliancy */
102 HOST_RESET = (1 << 0), /* reset controller; self-clear */
103 HOST_IRQ_EN = (1 << 1), /* global IRQ enable */
104 HOST_AHCI_EN = (1 << 31), /* AHCI enabled */
107 HOST_CAP_SSC = (1 << 14), /* Slumber capable */
108 HOST_CAP_PMP = (1 << 17), /* Port Multiplier support */
109 HOST_CAP_CLO = (1 << 24), /* Command List Override support */
110 HOST_CAP_ALPM = (1 << 26), /* Aggressive Link PM support */
111 HOST_CAP_SSS = (1 << 27), /* Staggered Spin-up */
112 HOST_CAP_SNTF = (1 << 29), /* SNotification register */
113 HOST_CAP_NCQ = (1 << 30), /* Native Command Queueing */
114 HOST_CAP_64 = (1 << 31), /* PCI DAC (64-bit DMA) support */
116 /* registers for each SATA port */
117 PORT_LST_ADDR = 0x00, /* command list DMA addr */
118 PORT_LST_ADDR_HI = 0x04, /* command list DMA addr hi */
119 PORT_FIS_ADDR = 0x08, /* FIS rx buf addr */
120 PORT_FIS_ADDR_HI = 0x0c, /* FIS rx buf addr hi */
121 PORT_IRQ_STAT = 0x10, /* interrupt status */
122 PORT_IRQ_MASK = 0x14, /* interrupt enable/disable mask */
123 PORT_CMD = 0x18, /* port command */
124 PORT_TFDATA = 0x20, /* taskfile data */
125 PORT_SIG = 0x24, /* device TF signature */
126 PORT_CMD_ISSUE = 0x38, /* command issue */
127 PORT_SCR_STAT = 0x28, /* SATA phy register: SStatus */
128 PORT_SCR_CTL = 0x2c, /* SATA phy register: SControl */
129 PORT_SCR_ERR = 0x30, /* SATA phy register: SError */
130 PORT_SCR_ACT = 0x34, /* SATA phy register: SActive */
131 PORT_SCR_NTF = 0x3c, /* SATA phy register: SNotification */
133 /* PORT_IRQ_{STAT,MASK} bits */
134 PORT_IRQ_COLD_PRES = (1 << 31), /* cold presence detect */
135 PORT_IRQ_TF_ERR = (1 << 30), /* task file error */
136 PORT_IRQ_HBUS_ERR = (1 << 29), /* host bus fatal error */
137 PORT_IRQ_HBUS_DATA_ERR = (1 << 28), /* host bus data error */
138 PORT_IRQ_IF_ERR = (1 << 27), /* interface fatal error */
139 PORT_IRQ_IF_NONFATAL = (1 << 26), /* interface non-fatal error */
140 PORT_IRQ_OVERFLOW = (1 << 24), /* xfer exhausted available S/G */
141 PORT_IRQ_BAD_PMP = (1 << 23), /* incorrect port multiplier */
143 PORT_IRQ_PHYRDY = (1 << 22), /* PhyRdy changed */
144 PORT_IRQ_DEV_ILCK = (1 << 7), /* device interlock */
145 PORT_IRQ_CONNECT = (1 << 6), /* port connect change status */
146 PORT_IRQ_SG_DONE = (1 << 5), /* descriptor processed */
147 PORT_IRQ_UNK_FIS = (1 << 4), /* unknown FIS rx'd */
148 PORT_IRQ_SDB_FIS = (1 << 3), /* Set Device Bits FIS rx'd */
149 PORT_IRQ_DMAS_FIS = (1 << 2), /* DMA Setup FIS rx'd */
150 PORT_IRQ_PIOS_FIS = (1 << 1), /* PIO Setup FIS rx'd */
151 PORT_IRQ_D2H_REG_FIS = (1 << 0), /* D2H Register FIS rx'd */
153 PORT_IRQ_FREEZE = PORT_IRQ_HBUS_ERR |
159 PORT_IRQ_ERROR = PORT_IRQ_FREEZE |
161 PORT_IRQ_HBUS_DATA_ERR,
162 DEF_PORT_IRQ = PORT_IRQ_ERROR | PORT_IRQ_SG_DONE |
163 PORT_IRQ_SDB_FIS | PORT_IRQ_DMAS_FIS |
164 PORT_IRQ_PIOS_FIS | PORT_IRQ_D2H_REG_FIS,
167 PORT_CMD_ASP = (1 << 27), /* Aggressive Slumber/Partial */
168 PORT_CMD_ALPE = (1 << 26), /* Aggressive Link PM enable */
169 PORT_CMD_ATAPI = (1 << 24), /* Device is ATAPI */
170 PORT_CMD_PMP = (1 << 17), /* PMP attached */
171 PORT_CMD_LIST_ON = (1 << 15), /* cmd list DMA engine running */
172 PORT_CMD_FIS_ON = (1 << 14), /* FIS DMA engine running */
173 PORT_CMD_FIS_RX = (1 << 4), /* Enable FIS receive DMA engine */
174 PORT_CMD_CLO = (1 << 3), /* Command list override */
175 PORT_CMD_POWER_ON = (1 << 2), /* Power up device */
176 PORT_CMD_SPIN_UP = (1 << 1), /* Spin up device */
177 PORT_CMD_START = (1 << 0), /* Enable port DMA engine */
179 PORT_CMD_ICC_MASK = (0xf << 28), /* i/f ICC state mask */
180 PORT_CMD_ICC_ACTIVE = (0x1 << 28), /* Put i/f in active state */
181 PORT_CMD_ICC_PARTIAL = (0x2 << 28), /* Put i/f in partial state */
182 PORT_CMD_ICC_SLUMBER = (0x6 << 28), /* Put i/f in slumber state */
184 /* hpriv->flags bits */
185 AHCI_HFLAG_NO_NCQ = (1 << 0),
186 AHCI_HFLAG_IGN_IRQ_IF_ERR = (1 << 1), /* ignore IRQ_IF_ERR */
187 AHCI_HFLAG_IGN_SERR_INTERNAL = (1 << 2), /* ignore SERR_INTERNAL */
188 AHCI_HFLAG_32BIT_ONLY = (1 << 3), /* force 32bit */
189 AHCI_HFLAG_MV_PATA = (1 << 4), /* PATA port */
190 AHCI_HFLAG_NO_MSI = (1 << 5), /* no PCI MSI */
191 AHCI_HFLAG_NO_PMP = (1 << 6), /* no PMP */
192 AHCI_HFLAG_NO_HOTPLUG = (1 << 7), /* ignore PxSERR.DIAG.N */
193 AHCI_HFLAG_SECT255 = (1 << 8), /* max 255 sectors */
197 AHCI_FLAG_COMMON = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
198 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA |
199 ATA_FLAG_ACPI_SATA | ATA_FLAG_AN |
202 ICH_MAP = 0x90, /* ICH MAP register */
205 struct ahci_cmd_hdr {
220 struct ahci_host_priv {
221 unsigned int flags; /* AHCI_HFLAG_* */
222 u32 cap; /* cap to use */
223 u32 port_map; /* port map to use */
224 u32 saved_cap; /* saved initial cap */
225 u32 saved_port_map; /* saved initial port_map */
228 struct ahci_port_priv {
229 struct ata_link *active_link;
230 struct ahci_cmd_hdr *cmd_slot;
231 dma_addr_t cmd_slot_dma;
233 dma_addr_t cmd_tbl_dma;
235 dma_addr_t rx_fis_dma;
236 /* for NCQ spurious interrupt analysis */
237 unsigned int ncq_saw_d2h:1;
238 unsigned int ncq_saw_dmas:1;
239 unsigned int ncq_saw_sdb:1;
240 u32 intr_mask; /* interrupts to enable */
243 static int ahci_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val);
244 static int ahci_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val);
245 static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
246 static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc);
247 static int ahci_port_start(struct ata_port *ap);
248 static void ahci_port_stop(struct ata_port *ap);
249 static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
250 static void ahci_qc_prep(struct ata_queued_cmd *qc);
251 static u8 ahci_check_status(struct ata_port *ap);
252 static void ahci_freeze(struct ata_port *ap);
253 static void ahci_thaw(struct ata_port *ap);
254 static void ahci_pmp_attach(struct ata_port *ap);
255 static void ahci_pmp_detach(struct ata_port *ap);
256 static void ahci_error_handler(struct ata_port *ap);
257 static void ahci_vt8251_error_handler(struct ata_port *ap);
258 static void ahci_p5wdh_error_handler(struct ata_port *ap);
259 static void ahci_post_internal_cmd(struct ata_queued_cmd *qc);
260 static int ahci_port_resume(struct ata_port *ap);
261 static void ahci_dev_config(struct ata_device *dev);
262 static unsigned int ahci_fill_sg(struct ata_queued_cmd *qc, void *cmd_tbl);
263 static void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag,
266 static int ahci_port_suspend(struct ata_port *ap, pm_message_t mesg);
267 static int ahci_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
268 static int ahci_pci_device_resume(struct pci_dev *pdev);
271 static struct class_device_attribute *ahci_shost_attrs[] = {
272 &class_device_attr_link_power_management_policy,
276 static struct scsi_host_template ahci_sht = {
277 .module = THIS_MODULE,
279 .ioctl = ata_scsi_ioctl,
280 .queuecommand = ata_scsi_queuecmd,
281 .change_queue_depth = ata_scsi_change_queue_depth,
282 .can_queue = AHCI_MAX_CMDS - 1,
283 .this_id = ATA_SHT_THIS_ID,
284 .sg_tablesize = AHCI_MAX_SG,
285 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
286 .emulated = ATA_SHT_EMULATED,
287 .use_clustering = AHCI_USE_CLUSTERING,
288 .proc_name = DRV_NAME,
289 .dma_boundary = AHCI_DMA_BOUNDARY,
290 .slave_configure = ata_scsi_slave_config,
291 .slave_destroy = ata_scsi_slave_destroy,
292 .bios_param = ata_std_bios_param,
293 .shost_attrs = ahci_shost_attrs,
296 static const struct ata_port_operations ahci_ops = {
297 .check_status = ahci_check_status,
298 .check_altstatus = ahci_check_status,
299 .dev_select = ata_noop_dev_select,
301 .dev_config = ahci_dev_config,
303 .tf_read = ahci_tf_read,
305 .qc_defer = sata_pmp_qc_defer_cmd_switch,
306 .qc_prep = ahci_qc_prep,
307 .qc_issue = ahci_qc_issue,
309 .irq_clear = ata_noop_irq_clear,
311 .scr_read = ahci_scr_read,
312 .scr_write = ahci_scr_write,
314 .freeze = ahci_freeze,
317 .error_handler = ahci_error_handler,
318 .post_internal_cmd = ahci_post_internal_cmd,
320 .pmp_attach = ahci_pmp_attach,
321 .pmp_detach = ahci_pmp_detach,
324 .port_suspend = ahci_port_suspend,
325 .port_resume = ahci_port_resume,
327 .enable_pm = ahci_enable_alpm,
328 .disable_pm = ahci_disable_alpm,
330 .port_start = ahci_port_start,
331 .port_stop = ahci_port_stop,
334 static const struct ata_port_operations ahci_vt8251_ops = {
335 .check_status = ahci_check_status,
336 .check_altstatus = ahci_check_status,
337 .dev_select = ata_noop_dev_select,
339 .tf_read = ahci_tf_read,
341 .qc_defer = sata_pmp_qc_defer_cmd_switch,
342 .qc_prep = ahci_qc_prep,
343 .qc_issue = ahci_qc_issue,
345 .irq_clear = ata_noop_irq_clear,
347 .scr_read = ahci_scr_read,
348 .scr_write = ahci_scr_write,
350 .freeze = ahci_freeze,
353 .error_handler = ahci_vt8251_error_handler,
354 .post_internal_cmd = ahci_post_internal_cmd,
356 .pmp_attach = ahci_pmp_attach,
357 .pmp_detach = ahci_pmp_detach,
360 .port_suspend = ahci_port_suspend,
361 .port_resume = ahci_port_resume,
364 .port_start = ahci_port_start,
365 .port_stop = ahci_port_stop,
368 static const struct ata_port_operations ahci_p5wdh_ops = {
369 .check_status = ahci_check_status,
370 .check_altstatus = ahci_check_status,
371 .dev_select = ata_noop_dev_select,
373 .tf_read = ahci_tf_read,
375 .qc_defer = sata_pmp_qc_defer_cmd_switch,
376 .qc_prep = ahci_qc_prep,
377 .qc_issue = ahci_qc_issue,
379 .irq_clear = ata_noop_irq_clear,
381 .scr_read = ahci_scr_read,
382 .scr_write = ahci_scr_write,
384 .freeze = ahci_freeze,
387 .error_handler = ahci_p5wdh_error_handler,
388 .post_internal_cmd = ahci_post_internal_cmd,
390 .pmp_attach = ahci_pmp_attach,
391 .pmp_detach = ahci_pmp_detach,
394 .port_suspend = ahci_port_suspend,
395 .port_resume = ahci_port_resume,
398 .port_start = ahci_port_start,
399 .port_stop = ahci_port_stop,
402 #define AHCI_HFLAGS(flags) .private_data = (void *)(flags)
404 static const struct ata_port_info ahci_port_info[] = {
407 .flags = AHCI_FLAG_COMMON,
408 .pio_mask = 0x1f, /* pio0-4 */
409 .udma_mask = ATA_UDMA6,
410 .port_ops = &ahci_ops,
412 /* board_ahci_vt8251 */
414 AHCI_HFLAGS (AHCI_HFLAG_NO_NCQ | AHCI_HFLAG_NO_PMP),
415 .flags = AHCI_FLAG_COMMON,
416 .pio_mask = 0x1f, /* pio0-4 */
417 .udma_mask = ATA_UDMA6,
418 .port_ops = &ahci_vt8251_ops,
420 /* board_ahci_ign_iferr */
422 AHCI_HFLAGS (AHCI_HFLAG_IGN_IRQ_IF_ERR),
423 .flags = AHCI_FLAG_COMMON,
424 .pio_mask = 0x1f, /* pio0-4 */
425 .udma_mask = ATA_UDMA6,
426 .port_ops = &ahci_ops,
428 /* board_ahci_sb600 */
430 AHCI_HFLAGS (AHCI_HFLAG_IGN_SERR_INTERNAL |
431 AHCI_HFLAG_32BIT_ONLY |
432 AHCI_HFLAG_SECT255 | AHCI_HFLAG_NO_PMP),
433 .flags = AHCI_FLAG_COMMON,
434 .pio_mask = 0x1f, /* pio0-4 */
435 .udma_mask = ATA_UDMA6,
436 .port_ops = &ahci_ops,
440 AHCI_HFLAGS (AHCI_HFLAG_NO_NCQ | AHCI_HFLAG_NO_MSI |
442 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
443 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
444 .pio_mask = 0x1f, /* pio0-4 */
445 .udma_mask = ATA_UDMA6,
446 .port_ops = &ahci_ops,
448 /* board_ahci_sb700 */
450 AHCI_HFLAGS (AHCI_HFLAG_IGN_SERR_INTERNAL |
452 .flags = AHCI_FLAG_COMMON,
453 .pio_mask = 0x1f, /* pio0-4 */
454 .udma_mask = ATA_UDMA6,
455 .port_ops = &ahci_ops,
459 static const struct pci_device_id ahci_pci_tbl[] = {
461 { PCI_VDEVICE(INTEL, 0x2652), board_ahci }, /* ICH6 */
462 { PCI_VDEVICE(INTEL, 0x2653), board_ahci }, /* ICH6M */
463 { PCI_VDEVICE(INTEL, 0x27c1), board_ahci }, /* ICH7 */
464 { PCI_VDEVICE(INTEL, 0x27c5), board_ahci }, /* ICH7M */
465 { PCI_VDEVICE(INTEL, 0x27c3), board_ahci }, /* ICH7R */
466 { PCI_VDEVICE(AL, 0x5288), board_ahci_ign_iferr }, /* ULi M5288 */
467 { PCI_VDEVICE(INTEL, 0x2681), board_ahci }, /* ESB2 */
468 { PCI_VDEVICE(INTEL, 0x2682), board_ahci }, /* ESB2 */
469 { PCI_VDEVICE(INTEL, 0x2683), board_ahci }, /* ESB2 */
470 { PCI_VDEVICE(INTEL, 0x27c6), board_ahci }, /* ICH7-M DH */
471 { PCI_VDEVICE(INTEL, 0x2821), board_ahci }, /* ICH8 */
472 { PCI_VDEVICE(INTEL, 0x2822), board_ahci }, /* ICH8 */
473 { PCI_VDEVICE(INTEL, 0x2824), board_ahci }, /* ICH8 */
474 { PCI_VDEVICE(INTEL, 0x2829), board_ahci }, /* ICH8M */
475 { PCI_VDEVICE(INTEL, 0x282a), board_ahci }, /* ICH8M */
476 { PCI_VDEVICE(INTEL, 0x2922), board_ahci }, /* ICH9 */
477 { PCI_VDEVICE(INTEL, 0x2923), board_ahci }, /* ICH9 */
478 { PCI_VDEVICE(INTEL, 0x2924), board_ahci }, /* ICH9 */
479 { PCI_VDEVICE(INTEL, 0x2925), board_ahci }, /* ICH9 */
480 { PCI_VDEVICE(INTEL, 0x2927), board_ahci }, /* ICH9 */
481 { PCI_VDEVICE(INTEL, 0x2929), board_ahci }, /* ICH9M */
482 { PCI_VDEVICE(INTEL, 0x292a), board_ahci }, /* ICH9M */
483 { PCI_VDEVICE(INTEL, 0x292b), board_ahci }, /* ICH9M */
484 { PCI_VDEVICE(INTEL, 0x292c), board_ahci }, /* ICH9M */
485 { PCI_VDEVICE(INTEL, 0x292f), board_ahci }, /* ICH9M */
486 { PCI_VDEVICE(INTEL, 0x294d), board_ahci }, /* ICH9 */
487 { PCI_VDEVICE(INTEL, 0x294e), board_ahci }, /* ICH9M */
488 { PCI_VDEVICE(INTEL, 0x502a), board_ahci }, /* Tolapai */
489 { PCI_VDEVICE(INTEL, 0x502b), board_ahci }, /* Tolapai */
490 { PCI_VDEVICE(INTEL, 0x3a05), board_ahci }, /* ICH10 */
491 { PCI_VDEVICE(INTEL, 0x3a25), board_ahci }, /* ICH10 */
493 /* JMicron 360/1/3/5/6, match class to avoid IDE function */
494 { PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
495 PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci_ign_iferr },
498 { PCI_VDEVICE(ATI, 0x4380), board_ahci_sb600 }, /* ATI SB600 */
499 { PCI_VDEVICE(ATI, 0x4390), board_ahci_sb700 }, /* ATI SB700/800 */
500 { PCI_VDEVICE(ATI, 0x4391), board_ahci_sb700 }, /* ATI SB700/800 */
501 { PCI_VDEVICE(ATI, 0x4392), board_ahci_sb700 }, /* ATI SB700/800 */
502 { PCI_VDEVICE(ATI, 0x4393), board_ahci_sb700 }, /* ATI SB700/800 */
503 { PCI_VDEVICE(ATI, 0x4394), board_ahci_sb700 }, /* ATI SB700/800 */
504 { PCI_VDEVICE(ATI, 0x4395), board_ahci_sb700 }, /* ATI SB700/800 */
507 { PCI_VDEVICE(VIA, 0x3349), board_ahci_vt8251 }, /* VIA VT8251 */
508 { PCI_VDEVICE(VIA, 0x6287), board_ahci_vt8251 }, /* VIA VT8251 */
511 { PCI_VDEVICE(NVIDIA, 0x044c), board_ahci }, /* MCP65 */
512 { PCI_VDEVICE(NVIDIA, 0x044d), board_ahci }, /* MCP65 */
513 { PCI_VDEVICE(NVIDIA, 0x044e), board_ahci }, /* MCP65 */
514 { PCI_VDEVICE(NVIDIA, 0x044f), board_ahci }, /* MCP65 */
515 { PCI_VDEVICE(NVIDIA, 0x045c), board_ahci }, /* MCP65 */
516 { PCI_VDEVICE(NVIDIA, 0x045d), board_ahci }, /* MCP65 */
517 { PCI_VDEVICE(NVIDIA, 0x045e), board_ahci }, /* MCP65 */
518 { PCI_VDEVICE(NVIDIA, 0x045f), board_ahci }, /* MCP65 */
519 { PCI_VDEVICE(NVIDIA, 0x0550), board_ahci }, /* MCP67 */
520 { PCI_VDEVICE(NVIDIA, 0x0551), board_ahci }, /* MCP67 */
521 { PCI_VDEVICE(NVIDIA, 0x0552), board_ahci }, /* MCP67 */
522 { PCI_VDEVICE(NVIDIA, 0x0553), board_ahci }, /* MCP67 */
523 { PCI_VDEVICE(NVIDIA, 0x0554), board_ahci }, /* MCP67 */
524 { PCI_VDEVICE(NVIDIA, 0x0555), board_ahci }, /* MCP67 */
525 { PCI_VDEVICE(NVIDIA, 0x0556), board_ahci }, /* MCP67 */
526 { PCI_VDEVICE(NVIDIA, 0x0557), board_ahci }, /* MCP67 */
527 { PCI_VDEVICE(NVIDIA, 0x0558), board_ahci }, /* MCP67 */
528 { PCI_VDEVICE(NVIDIA, 0x0559), board_ahci }, /* MCP67 */
529 { PCI_VDEVICE(NVIDIA, 0x055a), board_ahci }, /* MCP67 */
530 { PCI_VDEVICE(NVIDIA, 0x055b), board_ahci }, /* MCP67 */
531 { PCI_VDEVICE(NVIDIA, 0x07f0), board_ahci }, /* MCP73 */
532 { PCI_VDEVICE(NVIDIA, 0x07f1), board_ahci }, /* MCP73 */
533 { PCI_VDEVICE(NVIDIA, 0x07f2), board_ahci }, /* MCP73 */
534 { PCI_VDEVICE(NVIDIA, 0x07f3), board_ahci }, /* MCP73 */
535 { PCI_VDEVICE(NVIDIA, 0x07f4), board_ahci }, /* MCP73 */
536 { PCI_VDEVICE(NVIDIA, 0x07f5), board_ahci }, /* MCP73 */
537 { PCI_VDEVICE(NVIDIA, 0x07f6), board_ahci }, /* MCP73 */
538 { PCI_VDEVICE(NVIDIA, 0x07f7), board_ahci }, /* MCP73 */
539 { PCI_VDEVICE(NVIDIA, 0x07f8), board_ahci }, /* MCP73 */
540 { PCI_VDEVICE(NVIDIA, 0x07f9), board_ahci }, /* MCP73 */
541 { PCI_VDEVICE(NVIDIA, 0x07fa), board_ahci }, /* MCP73 */
542 { PCI_VDEVICE(NVIDIA, 0x07fb), board_ahci }, /* MCP73 */
543 { PCI_VDEVICE(NVIDIA, 0x0ad0), board_ahci }, /* MCP77 */
544 { PCI_VDEVICE(NVIDIA, 0x0ad1), board_ahci }, /* MCP77 */
545 { PCI_VDEVICE(NVIDIA, 0x0ad2), board_ahci }, /* MCP77 */
546 { PCI_VDEVICE(NVIDIA, 0x0ad3), board_ahci }, /* MCP77 */
547 { PCI_VDEVICE(NVIDIA, 0x0ad4), board_ahci }, /* MCP77 */
548 { PCI_VDEVICE(NVIDIA, 0x0ad5), board_ahci }, /* MCP77 */
549 { PCI_VDEVICE(NVIDIA, 0x0ad6), board_ahci }, /* MCP77 */
550 { PCI_VDEVICE(NVIDIA, 0x0ad7), board_ahci }, /* MCP77 */
551 { PCI_VDEVICE(NVIDIA, 0x0ad8), board_ahci }, /* MCP77 */
552 { PCI_VDEVICE(NVIDIA, 0x0ad9), board_ahci }, /* MCP77 */
553 { PCI_VDEVICE(NVIDIA, 0x0ada), board_ahci }, /* MCP77 */
554 { PCI_VDEVICE(NVIDIA, 0x0adb), board_ahci }, /* MCP77 */
555 { PCI_VDEVICE(NVIDIA, 0x0ab4), board_ahci }, /* MCP79 */
556 { PCI_VDEVICE(NVIDIA, 0x0ab5), board_ahci }, /* MCP79 */
557 { PCI_VDEVICE(NVIDIA, 0x0ab6), board_ahci }, /* MCP79 */
558 { PCI_VDEVICE(NVIDIA, 0x0ab7), board_ahci }, /* MCP79 */
559 { PCI_VDEVICE(NVIDIA, 0x0ab8), board_ahci }, /* MCP79 */
560 { PCI_VDEVICE(NVIDIA, 0x0ab9), board_ahci }, /* MCP79 */
561 { PCI_VDEVICE(NVIDIA, 0x0aba), board_ahci }, /* MCP79 */
562 { PCI_VDEVICE(NVIDIA, 0x0abb), board_ahci }, /* MCP79 */
563 { PCI_VDEVICE(NVIDIA, 0x0abc), board_ahci }, /* MCP79 */
564 { PCI_VDEVICE(NVIDIA, 0x0abd), board_ahci }, /* MCP79 */
565 { PCI_VDEVICE(NVIDIA, 0x0abe), board_ahci }, /* MCP79 */
566 { PCI_VDEVICE(NVIDIA, 0x0abf), board_ahci }, /* MCP79 */
567 { PCI_VDEVICE(NVIDIA, 0x0bc8), board_ahci }, /* MCP7B */
568 { PCI_VDEVICE(NVIDIA, 0x0bc9), board_ahci }, /* MCP7B */
569 { PCI_VDEVICE(NVIDIA, 0x0bca), board_ahci }, /* MCP7B */
570 { PCI_VDEVICE(NVIDIA, 0x0bcb), board_ahci }, /* MCP7B */
571 { PCI_VDEVICE(NVIDIA, 0x0bcc), board_ahci }, /* MCP7B */
572 { PCI_VDEVICE(NVIDIA, 0x0bcd), board_ahci }, /* MCP7B */
573 { PCI_VDEVICE(NVIDIA, 0x0bce), board_ahci }, /* MCP7B */
574 { PCI_VDEVICE(NVIDIA, 0x0bcf), board_ahci }, /* MCP7B */
575 { PCI_VDEVICE(NVIDIA, 0x0bd0), board_ahci }, /* MCP7B */
576 { PCI_VDEVICE(NVIDIA, 0x0bd1), board_ahci }, /* MCP7B */
577 { PCI_VDEVICE(NVIDIA, 0x0bd2), board_ahci }, /* MCP7B */
578 { PCI_VDEVICE(NVIDIA, 0x0bd3), board_ahci }, /* MCP7B */
581 { PCI_VDEVICE(SI, 0x1184), board_ahci }, /* SiS 966 */
582 { PCI_VDEVICE(SI, 0x1185), board_ahci }, /* SiS 966 */
583 { PCI_VDEVICE(SI, 0x0186), board_ahci }, /* SiS 968 */
586 { PCI_VDEVICE(MARVELL, 0x6145), board_ahci_mv }, /* 6145 */
587 { PCI_VDEVICE(MARVELL, 0x6121), board_ahci_mv }, /* 6121 */
589 /* Generic, PCI class code for AHCI */
590 { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
591 PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci },
593 { } /* terminate list */
597 static struct pci_driver ahci_pci_driver = {
599 .id_table = ahci_pci_tbl,
600 .probe = ahci_init_one,
601 .remove = ata_pci_remove_one,
603 .suspend = ahci_pci_device_suspend,
604 .resume = ahci_pci_device_resume,
609 static inline int ahci_nr_ports(u32 cap)
611 return (cap & 0x1f) + 1;
614 static inline void __iomem *__ahci_port_base(struct ata_host *host,
615 unsigned int port_no)
617 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
619 return mmio + 0x100 + (port_no * 0x80);
622 static inline void __iomem *ahci_port_base(struct ata_port *ap)
624 return __ahci_port_base(ap->host, ap->port_no);
627 static void ahci_enable_ahci(void __iomem *mmio)
631 /* turn on AHCI_EN */
632 tmp = readl(mmio + HOST_CTL);
633 if (!(tmp & HOST_AHCI_EN)) {
635 writel(tmp, mmio + HOST_CTL);
636 tmp = readl(mmio + HOST_CTL); /* flush && sanity check */
637 WARN_ON(!(tmp & HOST_AHCI_EN));
642 * ahci_save_initial_config - Save and fixup initial config values
643 * @pdev: target PCI device
644 * @hpriv: host private area to store config values
646 * Some registers containing configuration info might be setup by
647 * BIOS and might be cleared on reset. This function saves the
648 * initial values of those registers into @hpriv such that they
649 * can be restored after controller reset.
651 * If inconsistent, config values are fixed up by this function.
656 static void ahci_save_initial_config(struct pci_dev *pdev,
657 struct ahci_host_priv *hpriv)
659 void __iomem *mmio = pcim_iomap_table(pdev)[AHCI_PCI_BAR];
664 /* make sure AHCI mode is enabled before accessing CAP */
665 ahci_enable_ahci(mmio);
667 /* Values prefixed with saved_ are written back to host after
668 * reset. Values without are used for driver operation.
670 hpriv->saved_cap = cap = readl(mmio + HOST_CAP);
671 hpriv->saved_port_map = port_map = readl(mmio + HOST_PORTS_IMPL);
673 /* some chips have errata preventing 64bit use */
674 if ((cap & HOST_CAP_64) && (hpriv->flags & AHCI_HFLAG_32BIT_ONLY)) {
675 dev_printk(KERN_INFO, &pdev->dev,
676 "controller can't do 64bit DMA, forcing 32bit\n");
680 if ((cap & HOST_CAP_NCQ) && (hpriv->flags & AHCI_HFLAG_NO_NCQ)) {
681 dev_printk(KERN_INFO, &pdev->dev,
682 "controller can't do NCQ, turning off CAP_NCQ\n");
683 cap &= ~HOST_CAP_NCQ;
686 if ((cap & HOST_CAP_PMP) && (hpriv->flags & AHCI_HFLAG_NO_PMP)) {
687 dev_printk(KERN_INFO, &pdev->dev,
688 "controller can't do PMP, turning off CAP_PMP\n");
689 cap &= ~HOST_CAP_PMP;
693 * Temporary Marvell 6145 hack: PATA port presence
694 * is asserted through the standard AHCI port
695 * presence register, as bit 4 (counting from 0)
697 if (hpriv->flags & AHCI_HFLAG_MV_PATA) {
698 if (pdev->device == 0x6121)
702 dev_printk(KERN_ERR, &pdev->dev,
703 "MV_AHCI HACK: port_map %x -> %x\n",
710 /* cross check port_map and cap.n_ports */
714 for (i = 0; i < AHCI_MAX_PORTS; i++)
715 if (port_map & (1 << i))
718 /* If PI has more ports than n_ports, whine, clear
719 * port_map and let it be generated from n_ports.
721 if (map_ports > ahci_nr_ports(cap)) {
722 dev_printk(KERN_WARNING, &pdev->dev,
723 "implemented port map (0x%x) contains more "
724 "ports than nr_ports (%u), using nr_ports\n",
725 port_map, ahci_nr_ports(cap));
730 /* fabricate port_map from cap.nr_ports */
732 port_map = (1 << ahci_nr_ports(cap)) - 1;
733 dev_printk(KERN_WARNING, &pdev->dev,
734 "forcing PORTS_IMPL to 0x%x\n", port_map);
736 /* write the fixed up value to the PI register */
737 hpriv->saved_port_map = port_map;
740 /* record values to use during operation */
742 hpriv->port_map = port_map;
746 * ahci_restore_initial_config - Restore initial config
747 * @host: target ATA host
749 * Restore initial config stored by ahci_save_initial_config().
754 static void ahci_restore_initial_config(struct ata_host *host)
756 struct ahci_host_priv *hpriv = host->private_data;
757 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
759 writel(hpriv->saved_cap, mmio + HOST_CAP);
760 writel(hpriv->saved_port_map, mmio + HOST_PORTS_IMPL);
761 (void) readl(mmio + HOST_PORTS_IMPL); /* flush */
764 static unsigned ahci_scr_offset(struct ata_port *ap, unsigned int sc_reg)
766 static const int offset[] = {
767 [SCR_STATUS] = PORT_SCR_STAT,
768 [SCR_CONTROL] = PORT_SCR_CTL,
769 [SCR_ERROR] = PORT_SCR_ERR,
770 [SCR_ACTIVE] = PORT_SCR_ACT,
771 [SCR_NOTIFICATION] = PORT_SCR_NTF,
773 struct ahci_host_priv *hpriv = ap->host->private_data;
775 if (sc_reg < ARRAY_SIZE(offset) &&
776 (sc_reg != SCR_NOTIFICATION || (hpriv->cap & HOST_CAP_SNTF)))
777 return offset[sc_reg];
781 static int ahci_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
783 void __iomem *port_mmio = ahci_port_base(ap);
784 int offset = ahci_scr_offset(ap, sc_reg);
787 *val = readl(port_mmio + offset);
793 static int ahci_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
795 void __iomem *port_mmio = ahci_port_base(ap);
796 int offset = ahci_scr_offset(ap, sc_reg);
799 writel(val, port_mmio + offset);
805 static void ahci_start_engine(struct ata_port *ap)
807 void __iomem *port_mmio = ahci_port_base(ap);
811 tmp = readl(port_mmio + PORT_CMD);
812 tmp |= PORT_CMD_START;
813 writel(tmp, port_mmio + PORT_CMD);
814 readl(port_mmio + PORT_CMD); /* flush */
817 static int ahci_stop_engine(struct ata_port *ap)
819 void __iomem *port_mmio = ahci_port_base(ap);
822 tmp = readl(port_mmio + PORT_CMD);
824 /* check if the HBA is idle */
825 if ((tmp & (PORT_CMD_START | PORT_CMD_LIST_ON)) == 0)
828 /* setting HBA to idle */
829 tmp &= ~PORT_CMD_START;
830 writel(tmp, port_mmio + PORT_CMD);
832 /* wait for engine to stop. This could be as long as 500 msec */
833 tmp = ata_wait_register(port_mmio + PORT_CMD,
834 PORT_CMD_LIST_ON, PORT_CMD_LIST_ON, 1, 500);
835 if (tmp & PORT_CMD_LIST_ON)
841 static void ahci_start_fis_rx(struct ata_port *ap)
843 void __iomem *port_mmio = ahci_port_base(ap);
844 struct ahci_host_priv *hpriv = ap->host->private_data;
845 struct ahci_port_priv *pp = ap->private_data;
848 /* set FIS registers */
849 if (hpriv->cap & HOST_CAP_64)
850 writel((pp->cmd_slot_dma >> 16) >> 16,
851 port_mmio + PORT_LST_ADDR_HI);
852 writel(pp->cmd_slot_dma & 0xffffffff, port_mmio + PORT_LST_ADDR);
854 if (hpriv->cap & HOST_CAP_64)
855 writel((pp->rx_fis_dma >> 16) >> 16,
856 port_mmio + PORT_FIS_ADDR_HI);
857 writel(pp->rx_fis_dma & 0xffffffff, port_mmio + PORT_FIS_ADDR);
859 /* enable FIS reception */
860 tmp = readl(port_mmio + PORT_CMD);
861 tmp |= PORT_CMD_FIS_RX;
862 writel(tmp, port_mmio + PORT_CMD);
865 readl(port_mmio + PORT_CMD);
868 static int ahci_stop_fis_rx(struct ata_port *ap)
870 void __iomem *port_mmio = ahci_port_base(ap);
873 /* disable FIS reception */
874 tmp = readl(port_mmio + PORT_CMD);
875 tmp &= ~PORT_CMD_FIS_RX;
876 writel(tmp, port_mmio + PORT_CMD);
878 /* wait for completion, spec says 500ms, give it 1000 */
879 tmp = ata_wait_register(port_mmio + PORT_CMD, PORT_CMD_FIS_ON,
880 PORT_CMD_FIS_ON, 10, 1000);
881 if (tmp & PORT_CMD_FIS_ON)
887 static void ahci_power_up(struct ata_port *ap)
889 struct ahci_host_priv *hpriv = ap->host->private_data;
890 void __iomem *port_mmio = ahci_port_base(ap);
893 cmd = readl(port_mmio + PORT_CMD) & ~PORT_CMD_ICC_MASK;
896 if (hpriv->cap & HOST_CAP_SSS) {
897 cmd |= PORT_CMD_SPIN_UP;
898 writel(cmd, port_mmio + PORT_CMD);
902 writel(cmd | PORT_CMD_ICC_ACTIVE, port_mmio + PORT_CMD);
905 static void ahci_disable_alpm(struct ata_port *ap)
907 struct ahci_host_priv *hpriv = ap->host->private_data;
908 void __iomem *port_mmio = ahci_port_base(ap);
910 struct ahci_port_priv *pp = ap->private_data;
912 /* IPM bits should be disabled by libata-core */
913 /* get the existing command bits */
914 cmd = readl(port_mmio + PORT_CMD);
916 /* disable ALPM and ASP */
917 cmd &= ~PORT_CMD_ASP;
918 cmd &= ~PORT_CMD_ALPE;
920 /* force the interface back to active */
921 cmd |= PORT_CMD_ICC_ACTIVE;
923 /* write out new cmd value */
924 writel(cmd, port_mmio + PORT_CMD);
925 cmd = readl(port_mmio + PORT_CMD);
927 /* wait 10ms to be sure we've come out of any low power state */
930 /* clear out any PhyRdy stuff from interrupt status */
931 writel(PORT_IRQ_PHYRDY, port_mmio + PORT_IRQ_STAT);
933 /* go ahead and clean out PhyRdy Change from Serror too */
934 ahci_scr_write(ap, SCR_ERROR, ((1 << 16) | (1 << 18)));
937 * Clear flag to indicate that we should ignore all PhyRdy
940 hpriv->flags &= ~AHCI_HFLAG_NO_HOTPLUG;
943 * Enable interrupts on Phy Ready.
945 pp->intr_mask |= PORT_IRQ_PHYRDY;
946 writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
949 * don't change the link pm policy - we can be called
950 * just to turn of link pm temporarily
954 static int ahci_enable_alpm(struct ata_port *ap,
957 struct ahci_host_priv *hpriv = ap->host->private_data;
958 void __iomem *port_mmio = ahci_port_base(ap);
960 struct ahci_port_priv *pp = ap->private_data;
963 /* Make sure the host is capable of link power management */
964 if (!(hpriv->cap & HOST_CAP_ALPM))
968 case MAX_PERFORMANCE:
971 * if we came here with NOT_AVAILABLE,
972 * it just means this is the first time we
973 * have tried to enable - default to max performance,
974 * and let the user go to lower power modes on request.
976 ahci_disable_alpm(ap);
979 /* configure HBA to enter SLUMBER */
983 /* configure HBA to enter PARTIAL */
991 * Disable interrupts on Phy Ready. This keeps us from
992 * getting woken up due to spurious phy ready interrupts
993 * TBD - Hot plug should be done via polling now, is
994 * that even supported?
996 pp->intr_mask &= ~PORT_IRQ_PHYRDY;
997 writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
1000 * Set a flag to indicate that we should ignore all PhyRdy
1001 * state changes since these can happen now whenever we
1004 hpriv->flags |= AHCI_HFLAG_NO_HOTPLUG;
1006 /* get the existing command bits */
1007 cmd = readl(port_mmio + PORT_CMD);
1010 * Set ASP based on Policy
1015 * Setting this bit will instruct the HBA to aggressively
1016 * enter a lower power link state when it's appropriate and
1017 * based on the value set above for ASP
1019 cmd |= PORT_CMD_ALPE;
1021 /* write out new cmd value */
1022 writel(cmd, port_mmio + PORT_CMD);
1023 cmd = readl(port_mmio + PORT_CMD);
1025 /* IPM bits should be set by libata-core */
1030 static void ahci_power_down(struct ata_port *ap)
1032 struct ahci_host_priv *hpriv = ap->host->private_data;
1033 void __iomem *port_mmio = ahci_port_base(ap);
1036 if (!(hpriv->cap & HOST_CAP_SSS))
1039 /* put device into listen mode, first set PxSCTL.DET to 0 */
1040 scontrol = readl(port_mmio + PORT_SCR_CTL);
1042 writel(scontrol, port_mmio + PORT_SCR_CTL);
1044 /* then set PxCMD.SUD to 0 */
1045 cmd = readl(port_mmio + PORT_CMD) & ~PORT_CMD_ICC_MASK;
1046 cmd &= ~PORT_CMD_SPIN_UP;
1047 writel(cmd, port_mmio + PORT_CMD);
1051 static void ahci_start_port(struct ata_port *ap)
1053 /* enable FIS reception */
1054 ahci_start_fis_rx(ap);
1057 ahci_start_engine(ap);
1060 static int ahci_deinit_port(struct ata_port *ap, const char **emsg)
1065 rc = ahci_stop_engine(ap);
1067 *emsg = "failed to stop engine";
1071 /* disable FIS reception */
1072 rc = ahci_stop_fis_rx(ap);
1074 *emsg = "failed stop FIS RX";
1081 static int ahci_reset_controller(struct ata_host *host)
1083 struct pci_dev *pdev = to_pci_dev(host->dev);
1084 struct ahci_host_priv *hpriv = host->private_data;
1085 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
1088 /* we must be in AHCI mode, before using anything
1089 * AHCI-specific, such as HOST_RESET.
1091 ahci_enable_ahci(mmio);
1093 /* global controller reset */
1094 if (!ahci_skip_host_reset) {
1095 tmp = readl(mmio + HOST_CTL);
1096 if ((tmp & HOST_RESET) == 0) {
1097 writel(tmp | HOST_RESET, mmio + HOST_CTL);
1098 readl(mmio + HOST_CTL); /* flush */
1101 /* reset must complete within 1 second, or
1102 * the hardware should be considered fried.
1106 tmp = readl(mmio + HOST_CTL);
1107 if (tmp & HOST_RESET) {
1108 dev_printk(KERN_ERR, host->dev,
1109 "controller reset failed (0x%x)\n", tmp);
1113 /* turn on AHCI mode */
1114 ahci_enable_ahci(mmio);
1116 /* Some registers might be cleared on reset. Restore
1119 ahci_restore_initial_config(host);
1121 dev_printk(KERN_INFO, host->dev,
1122 "skipping global host reset\n");
1124 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
1128 pci_read_config_word(pdev, 0x92, &tmp16);
1129 if ((tmp16 & hpriv->port_map) != hpriv->port_map) {
1130 tmp16 |= hpriv->port_map;
1131 pci_write_config_word(pdev, 0x92, tmp16);
1138 static void ahci_port_init(struct pci_dev *pdev, struct ata_port *ap,
1139 int port_no, void __iomem *mmio,
1140 void __iomem *port_mmio)
1142 const char *emsg = NULL;
1146 /* make sure port is not active */
1147 rc = ahci_deinit_port(ap, &emsg);
1149 dev_printk(KERN_WARNING, &pdev->dev,
1150 "%s (%d)\n", emsg, rc);
1153 tmp = readl(port_mmio + PORT_SCR_ERR);
1154 VPRINTK("PORT_SCR_ERR 0x%x\n", tmp);
1155 writel(tmp, port_mmio + PORT_SCR_ERR);
1157 /* clear port IRQ */
1158 tmp = readl(port_mmio + PORT_IRQ_STAT);
1159 VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp);
1161 writel(tmp, port_mmio + PORT_IRQ_STAT);
1163 writel(1 << port_no, mmio + HOST_IRQ_STAT);
1166 static void ahci_init_controller(struct ata_host *host)
1168 struct ahci_host_priv *hpriv = host->private_data;
1169 struct pci_dev *pdev = to_pci_dev(host->dev);
1170 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
1172 void __iomem *port_mmio;
1176 if (hpriv->flags & AHCI_HFLAG_MV_PATA) {
1177 if (pdev->device == 0x6121)
1181 port_mmio = __ahci_port_base(host, mv);
1183 writel(0, port_mmio + PORT_IRQ_MASK);
1185 /* clear port IRQ */
1186 tmp = readl(port_mmio + PORT_IRQ_STAT);
1187 VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp);
1189 writel(tmp, port_mmio + PORT_IRQ_STAT);
1192 for (i = 0; i < host->n_ports; i++) {
1193 struct ata_port *ap = host->ports[i];
1195 port_mmio = ahci_port_base(ap);
1196 if (ata_port_is_dummy(ap))
1199 ahci_port_init(pdev, ap, i, mmio, port_mmio);
1202 tmp = readl(mmio + HOST_CTL);
1203 VPRINTK("HOST_CTL 0x%x\n", tmp);
1204 writel(tmp | HOST_IRQ_EN, mmio + HOST_CTL);
1205 tmp = readl(mmio + HOST_CTL);
1206 VPRINTK("HOST_CTL 0x%x\n", tmp);
1209 static void ahci_dev_config(struct ata_device *dev)
1211 struct ahci_host_priv *hpriv = dev->link->ap->host->private_data;
1213 if (hpriv->flags & AHCI_HFLAG_SECT255) {
1214 dev->max_sectors = 255;
1215 ata_dev_printk(dev, KERN_INFO,
1216 "SB600 AHCI: limiting to 255 sectors per cmd\n");
1220 static unsigned int ahci_dev_classify(struct ata_port *ap)
1222 void __iomem *port_mmio = ahci_port_base(ap);
1223 struct ata_taskfile tf;
1226 tmp = readl(port_mmio + PORT_SIG);
1227 tf.lbah = (tmp >> 24) & 0xff;
1228 tf.lbam = (tmp >> 16) & 0xff;
1229 tf.lbal = (tmp >> 8) & 0xff;
1230 tf.nsect = (tmp) & 0xff;
1232 return ata_dev_classify(&tf);
1235 static void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag,
1238 dma_addr_t cmd_tbl_dma;
1240 cmd_tbl_dma = pp->cmd_tbl_dma + tag * AHCI_CMD_TBL_SZ;
1242 pp->cmd_slot[tag].opts = cpu_to_le32(opts);
1243 pp->cmd_slot[tag].status = 0;
1244 pp->cmd_slot[tag].tbl_addr = cpu_to_le32(cmd_tbl_dma & 0xffffffff);
1245 pp->cmd_slot[tag].tbl_addr_hi = cpu_to_le32((cmd_tbl_dma >> 16) >> 16);
1248 static int ahci_kick_engine(struct ata_port *ap, int force_restart)
1250 void __iomem *port_mmio = ap->ioaddr.cmd_addr;
1251 struct ahci_host_priv *hpriv = ap->host->private_data;
1255 /* do we need to kick the port? */
1256 busy = ahci_check_status(ap) & (ATA_BUSY | ATA_DRQ);
1257 if (!busy && !force_restart)
1261 rc = ahci_stop_engine(ap);
1265 /* need to do CLO? */
1271 if (!(hpriv->cap & HOST_CAP_CLO)) {
1277 tmp = readl(port_mmio + PORT_CMD);
1278 tmp |= PORT_CMD_CLO;
1279 writel(tmp, port_mmio + PORT_CMD);
1282 tmp = ata_wait_register(port_mmio + PORT_CMD,
1283 PORT_CMD_CLO, PORT_CMD_CLO, 1, 500);
1284 if (tmp & PORT_CMD_CLO)
1287 /* restart engine */
1289 ahci_start_engine(ap);
1293 static int ahci_exec_polled_cmd(struct ata_port *ap, int pmp,
1294 struct ata_taskfile *tf, int is_cmd, u16 flags,
1295 unsigned long timeout_msec)
1297 const u32 cmd_fis_len = 5; /* five dwords */
1298 struct ahci_port_priv *pp = ap->private_data;
1299 void __iomem *port_mmio = ahci_port_base(ap);
1300 u8 *fis = pp->cmd_tbl;
1303 /* prep the command */
1304 ata_tf_to_fis(tf, pmp, is_cmd, fis);
1305 ahci_fill_cmd_slot(pp, 0, cmd_fis_len | flags | (pmp << 12));
1308 writel(1, port_mmio + PORT_CMD_ISSUE);
1311 tmp = ata_wait_register(port_mmio + PORT_CMD_ISSUE, 0x1, 0x1,
1314 ahci_kick_engine(ap, 1);
1318 readl(port_mmio + PORT_CMD_ISSUE); /* flush */
1323 static int ahci_do_softreset(struct ata_link *link, unsigned int *class,
1324 int pmp, unsigned long deadline)
1326 struct ata_port *ap = link->ap;
1327 const char *reason = NULL;
1328 unsigned long now, msecs;
1329 struct ata_taskfile tf;
1334 if (ata_link_offline(link)) {
1335 DPRINTK("PHY reports no device\n");
1336 *class = ATA_DEV_NONE;
1340 /* prepare for SRST (AHCI-1.1 10.4.1) */
1341 rc = ahci_kick_engine(ap, 1);
1342 if (rc && rc != -EOPNOTSUPP)
1343 ata_link_printk(link, KERN_WARNING,
1344 "failed to reset engine (errno=%d)\n", rc);
1346 ata_tf_init(link->device, &tf);
1348 /* issue the first D2H Register FIS */
1351 if (time_after(now, deadline))
1352 msecs = jiffies_to_msecs(deadline - now);
1355 if (ahci_exec_polled_cmd(ap, pmp, &tf, 0,
1356 AHCI_CMD_RESET | AHCI_CMD_CLR_BUSY, msecs)) {
1358 reason = "1st FIS failed";
1362 /* spec says at least 5us, but be generous and sleep for 1ms */
1365 /* issue the second D2H Register FIS */
1366 tf.ctl &= ~ATA_SRST;
1367 ahci_exec_polled_cmd(ap, pmp, &tf, 0, 0, 0);
1369 /* wait a while before checking status */
1370 ata_wait_after_reset(ap, deadline);
1372 rc = ata_wait_ready(ap, deadline);
1373 /* link occupied, -ENODEV too is an error */
1375 reason = "device not ready";
1378 *class = ahci_dev_classify(ap);
1380 DPRINTK("EXIT, class=%u\n", *class);
1384 ata_link_printk(link, KERN_ERR, "softreset failed (%s)\n", reason);
1388 static int ahci_softreset(struct ata_link *link, unsigned int *class,
1389 unsigned long deadline)
1393 if (link->ap->flags & ATA_FLAG_PMP)
1394 pmp = SATA_PMP_CTRL_PORT;
1396 return ahci_do_softreset(link, class, pmp, deadline);
1399 static int ahci_hardreset(struct ata_link *link, unsigned int *class,
1400 unsigned long deadline)
1402 struct ata_port *ap = link->ap;
1403 struct ahci_port_priv *pp = ap->private_data;
1404 u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
1405 struct ata_taskfile tf;
1410 ahci_stop_engine(ap);
1412 /* clear D2H reception area to properly wait for D2H FIS */
1413 ata_tf_init(link->device, &tf);
1415 ata_tf_to_fis(&tf, 0, 0, d2h_fis);
1417 rc = sata_std_hardreset(link, class, deadline);
1419 ahci_start_engine(ap);
1421 if (rc == 0 && ata_link_online(link))
1422 *class = ahci_dev_classify(ap);
1423 if (rc != -EAGAIN && *class == ATA_DEV_UNKNOWN)
1424 *class = ATA_DEV_NONE;
1426 DPRINTK("EXIT, rc=%d, class=%u\n", rc, *class);
1430 static int ahci_vt8251_hardreset(struct ata_link *link, unsigned int *class,
1431 unsigned long deadline)
1433 struct ata_port *ap = link->ap;
1439 ahci_stop_engine(ap);
1441 rc = sata_link_hardreset(link, sata_ehc_deb_timing(&link->eh_context),
1444 /* vt8251 needs SError cleared for the port to operate */
1445 ahci_scr_read(ap, SCR_ERROR, &serror);
1446 ahci_scr_write(ap, SCR_ERROR, serror);
1448 ahci_start_engine(ap);
1450 DPRINTK("EXIT, rc=%d, class=%u\n", rc, *class);
1452 /* vt8251 doesn't clear BSY on signature FIS reception,
1453 * request follow-up softreset.
1455 return rc ?: -EAGAIN;
1458 static int ahci_p5wdh_hardreset(struct ata_link *link, unsigned int *class,
1459 unsigned long deadline)
1461 struct ata_port *ap = link->ap;
1462 struct ahci_port_priv *pp = ap->private_data;
1463 u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
1464 struct ata_taskfile tf;
1467 ahci_stop_engine(ap);
1469 /* clear D2H reception area to properly wait for D2H FIS */
1470 ata_tf_init(link->device, &tf);
1472 ata_tf_to_fis(&tf, 0, 0, d2h_fis);
1474 rc = sata_link_hardreset(link, sata_ehc_deb_timing(&link->eh_context),
1477 ahci_start_engine(ap);
1479 if (rc || ata_link_offline(link))
1482 /* spec mandates ">= 2ms" before checking status */
1485 /* The pseudo configuration device on SIMG4726 attached to
1486 * ASUS P5W-DH Deluxe doesn't send signature FIS after
1487 * hardreset if no device is attached to the first downstream
1488 * port && the pseudo device locks up on SRST w/ PMP==0. To
1489 * work around this, wait for !BSY only briefly. If BSY isn't
1490 * cleared, perform CLO and proceed to IDENTIFY (achieved by
1491 * ATA_LFLAG_NO_SRST and ATA_LFLAG_ASSUME_ATA).
1493 * Wait for two seconds. Devices attached to downstream port
1494 * which can't process the following IDENTIFY after this will
1495 * have to be reset again. For most cases, this should
1496 * suffice while making probing snappish enough.
1498 rc = ata_wait_ready(ap, jiffies + 2 * HZ);
1500 ahci_kick_engine(ap, 0);
1505 static void ahci_postreset(struct ata_link *link, unsigned int *class)
1507 struct ata_port *ap = link->ap;
1508 void __iomem *port_mmio = ahci_port_base(ap);
1511 ata_std_postreset(link, class);
1513 /* Make sure port's ATAPI bit is set appropriately */
1514 new_tmp = tmp = readl(port_mmio + PORT_CMD);
1515 if (*class == ATA_DEV_ATAPI)
1516 new_tmp |= PORT_CMD_ATAPI;
1518 new_tmp &= ~PORT_CMD_ATAPI;
1519 if (new_tmp != tmp) {
1520 writel(new_tmp, port_mmio + PORT_CMD);
1521 readl(port_mmio + PORT_CMD); /* flush */
1525 static int ahci_pmp_softreset(struct ata_link *link, unsigned int *class,
1526 unsigned long deadline)
1528 return ahci_do_softreset(link, class, link->pmp, deadline);
1531 static u8 ahci_check_status(struct ata_port *ap)
1533 void __iomem *mmio = ap->ioaddr.cmd_addr;
1535 return readl(mmio + PORT_TFDATA) & 0xFF;
1538 static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
1540 struct ahci_port_priv *pp = ap->private_data;
1541 u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
1543 ata_tf_from_fis(d2h_fis, tf);
1546 static unsigned int ahci_fill_sg(struct ata_queued_cmd *qc, void *cmd_tbl)
1548 struct scatterlist *sg;
1549 struct ahci_sg *ahci_sg = cmd_tbl + AHCI_CMD_TBL_HDR_SZ;
1555 * Next, the S/G list.
1557 for_each_sg(qc->sg, sg, qc->n_elem, si) {
1558 dma_addr_t addr = sg_dma_address(sg);
1559 u32 sg_len = sg_dma_len(sg);
1561 ahci_sg[si].addr = cpu_to_le32(addr & 0xffffffff);
1562 ahci_sg[si].addr_hi = cpu_to_le32((addr >> 16) >> 16);
1563 ahci_sg[si].flags_size = cpu_to_le32(sg_len - 1);
1569 static void ahci_qc_prep(struct ata_queued_cmd *qc)
1571 struct ata_port *ap = qc->ap;
1572 struct ahci_port_priv *pp = ap->private_data;
1573 int is_atapi = ata_is_atapi(qc->tf.protocol);
1576 const u32 cmd_fis_len = 5; /* five dwords */
1577 unsigned int n_elem;
1580 * Fill in command table information. First, the header,
1581 * a SATA Register - Host to Device command FIS.
1583 cmd_tbl = pp->cmd_tbl + qc->tag * AHCI_CMD_TBL_SZ;
1585 ata_tf_to_fis(&qc->tf, qc->dev->link->pmp, 1, cmd_tbl);
1587 memset(cmd_tbl + AHCI_CMD_TBL_CDB, 0, 32);
1588 memcpy(cmd_tbl + AHCI_CMD_TBL_CDB, qc->cdb, qc->dev->cdb_len);
1592 if (qc->flags & ATA_QCFLAG_DMAMAP)
1593 n_elem = ahci_fill_sg(qc, cmd_tbl);
1596 * Fill in command slot information.
1598 opts = cmd_fis_len | n_elem << 16 | (qc->dev->link->pmp << 12);
1599 if (qc->tf.flags & ATA_TFLAG_WRITE)
1600 opts |= AHCI_CMD_WRITE;
1602 opts |= AHCI_CMD_ATAPI | AHCI_CMD_PREFETCH;
1604 ahci_fill_cmd_slot(pp, qc->tag, opts);
1607 static void ahci_error_intr(struct ata_port *ap, u32 irq_stat)
1609 struct ahci_host_priv *hpriv = ap->host->private_data;
1610 struct ahci_port_priv *pp = ap->private_data;
1611 struct ata_eh_info *host_ehi = &ap->link.eh_info;
1612 struct ata_link *link = NULL;
1613 struct ata_queued_cmd *active_qc;
1614 struct ata_eh_info *active_ehi;
1617 /* determine active link */
1618 ata_port_for_each_link(link, ap)
1619 if (ata_link_active(link))
1624 active_qc = ata_qc_from_tag(ap, link->active_tag);
1625 active_ehi = &link->eh_info;
1627 /* record irq stat */
1628 ata_ehi_clear_desc(host_ehi);
1629 ata_ehi_push_desc(host_ehi, "irq_stat 0x%08x", irq_stat);
1631 /* AHCI needs SError cleared; otherwise, it might lock up */
1632 ahci_scr_read(ap, SCR_ERROR, &serror);
1633 ahci_scr_write(ap, SCR_ERROR, serror);
1634 host_ehi->serror |= serror;
1636 /* some controllers set IRQ_IF_ERR on device errors, ignore it */
1637 if (hpriv->flags & AHCI_HFLAG_IGN_IRQ_IF_ERR)
1638 irq_stat &= ~PORT_IRQ_IF_ERR;
1640 if (irq_stat & PORT_IRQ_TF_ERR) {
1641 /* If qc is active, charge it; otherwise, the active
1642 * link. There's no active qc on NCQ errors. It will
1643 * be determined by EH by reading log page 10h.
1646 active_qc->err_mask |= AC_ERR_DEV;
1648 active_ehi->err_mask |= AC_ERR_DEV;
1650 if (hpriv->flags & AHCI_HFLAG_IGN_SERR_INTERNAL)
1651 host_ehi->serror &= ~SERR_INTERNAL;
1654 if (irq_stat & PORT_IRQ_UNK_FIS) {
1655 u32 *unk = (u32 *)(pp->rx_fis + RX_FIS_UNK);
1657 active_ehi->err_mask |= AC_ERR_HSM;
1658 active_ehi->action |= ATA_EH_RESET;
1659 ata_ehi_push_desc(active_ehi,
1660 "unknown FIS %08x %08x %08x %08x" ,
1661 unk[0], unk[1], unk[2], unk[3]);
1664 if (ap->nr_pmp_links && (irq_stat & PORT_IRQ_BAD_PMP)) {
1665 active_ehi->err_mask |= AC_ERR_HSM;
1666 active_ehi->action |= ATA_EH_RESET;
1667 ata_ehi_push_desc(active_ehi, "incorrect PMP");
1670 if (irq_stat & (PORT_IRQ_HBUS_ERR | PORT_IRQ_HBUS_DATA_ERR)) {
1671 host_ehi->err_mask |= AC_ERR_HOST_BUS;
1672 host_ehi->action |= ATA_EH_RESET;
1673 ata_ehi_push_desc(host_ehi, "host bus error");
1676 if (irq_stat & PORT_IRQ_IF_ERR) {
1677 host_ehi->err_mask |= AC_ERR_ATA_BUS;
1678 host_ehi->action |= ATA_EH_RESET;
1679 ata_ehi_push_desc(host_ehi, "interface fatal error");
1682 if (irq_stat & (PORT_IRQ_CONNECT | PORT_IRQ_PHYRDY)) {
1683 ata_ehi_hotplugged(host_ehi);
1684 ata_ehi_push_desc(host_ehi, "%s",
1685 irq_stat & PORT_IRQ_CONNECT ?
1686 "connection status changed" : "PHY RDY changed");
1689 /* okay, let's hand over to EH */
1691 if (irq_stat & PORT_IRQ_FREEZE)
1692 ata_port_freeze(ap);
1697 static void ahci_port_intr(struct ata_port *ap)
1699 void __iomem *port_mmio = ap->ioaddr.cmd_addr;
1700 struct ata_eh_info *ehi = &ap->link.eh_info;
1701 struct ahci_port_priv *pp = ap->private_data;
1702 struct ahci_host_priv *hpriv = ap->host->private_data;
1703 int resetting = !!(ap->pflags & ATA_PFLAG_RESETTING);
1704 u32 status, qc_active;
1707 status = readl(port_mmio + PORT_IRQ_STAT);
1708 writel(status, port_mmio + PORT_IRQ_STAT);
1710 /* ignore BAD_PMP while resetting */
1711 if (unlikely(resetting))
1712 status &= ~PORT_IRQ_BAD_PMP;
1714 /* If we are getting PhyRdy, this is
1715 * just a power state change, we should
1716 * clear out this, plus the PhyRdy/Comm
1717 * Wake bits from Serror
1719 if ((hpriv->flags & AHCI_HFLAG_NO_HOTPLUG) &&
1720 (status & PORT_IRQ_PHYRDY)) {
1721 status &= ~PORT_IRQ_PHYRDY;
1722 ahci_scr_write(ap, SCR_ERROR, ((1 << 16) | (1 << 18)));
1725 if (unlikely(status & PORT_IRQ_ERROR)) {
1726 ahci_error_intr(ap, status);
1730 if (status & PORT_IRQ_SDB_FIS) {
1731 /* If SNotification is available, leave notification
1732 * handling to sata_async_notification(). If not,
1733 * emulate it by snooping SDB FIS RX area.
1735 * Snooping FIS RX area is probably cheaper than
1736 * poking SNotification but some constrollers which
1737 * implement SNotification, ICH9 for example, don't
1738 * store AN SDB FIS into receive area.
1740 if (hpriv->cap & HOST_CAP_SNTF)
1741 sata_async_notification(ap);
1743 /* If the 'N' bit in word 0 of the FIS is set,
1744 * we just received asynchronous notification.
1745 * Tell libata about it.
1747 const __le32 *f = pp->rx_fis + RX_FIS_SDB;
1748 u32 f0 = le32_to_cpu(f[0]);
1751 sata_async_notification(ap);
1755 /* pp->active_link is valid iff any command is in flight */
1756 if (ap->qc_active && pp->active_link->sactive)
1757 qc_active = readl(port_mmio + PORT_SCR_ACT);
1759 qc_active = readl(port_mmio + PORT_CMD_ISSUE);
1761 rc = ata_qc_complete_multiple(ap, qc_active, NULL);
1763 /* while resetting, invalid completions are expected */
1764 if (unlikely(rc < 0 && !resetting)) {
1765 ehi->err_mask |= AC_ERR_HSM;
1766 ehi->action |= ATA_EH_RESET;
1767 ata_port_freeze(ap);
1771 static irqreturn_t ahci_interrupt(int irq, void *dev_instance)
1773 struct ata_host *host = dev_instance;
1774 struct ahci_host_priv *hpriv;
1775 unsigned int i, handled = 0;
1777 u32 irq_stat, irq_ack = 0;
1781 hpriv = host->private_data;
1782 mmio = host->iomap[AHCI_PCI_BAR];
1784 /* sigh. 0xffffffff is a valid return from h/w */
1785 irq_stat = readl(mmio + HOST_IRQ_STAT);
1786 irq_stat &= hpriv->port_map;
1790 spin_lock(&host->lock);
1792 for (i = 0; i < host->n_ports; i++) {
1793 struct ata_port *ap;
1795 if (!(irq_stat & (1 << i)))
1798 ap = host->ports[i];
1801 VPRINTK("port %u\n", i);
1803 VPRINTK("port %u (no irq)\n", i);
1804 if (ata_ratelimit())
1805 dev_printk(KERN_WARNING, host->dev,
1806 "interrupt on disabled port %u\n", i);
1809 irq_ack |= (1 << i);
1813 writel(irq_ack, mmio + HOST_IRQ_STAT);
1817 spin_unlock(&host->lock);
1821 return IRQ_RETVAL(handled);
1824 static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc)
1826 struct ata_port *ap = qc->ap;
1827 void __iomem *port_mmio = ahci_port_base(ap);
1828 struct ahci_port_priv *pp = ap->private_data;
1830 /* Keep track of the currently active link. It will be used
1831 * in completion path to determine whether NCQ phase is in
1834 pp->active_link = qc->dev->link;
1836 if (qc->tf.protocol == ATA_PROT_NCQ)
1837 writel(1 << qc->tag, port_mmio + PORT_SCR_ACT);
1838 writel(1 << qc->tag, port_mmio + PORT_CMD_ISSUE);
1839 readl(port_mmio + PORT_CMD_ISSUE); /* flush */
1844 static void ahci_freeze(struct ata_port *ap)
1846 void __iomem *port_mmio = ahci_port_base(ap);
1849 writel(0, port_mmio + PORT_IRQ_MASK);
1852 static void ahci_thaw(struct ata_port *ap)
1854 void __iomem *mmio = ap->host->iomap[AHCI_PCI_BAR];
1855 void __iomem *port_mmio = ahci_port_base(ap);
1857 struct ahci_port_priv *pp = ap->private_data;
1860 tmp = readl(port_mmio + PORT_IRQ_STAT);
1861 writel(tmp, port_mmio + PORT_IRQ_STAT);
1862 writel(1 << ap->port_no, mmio + HOST_IRQ_STAT);
1864 /* turn IRQ back on */
1865 writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
1868 static void ahci_error_handler(struct ata_port *ap)
1870 if (!(ap->pflags & ATA_PFLAG_FROZEN)) {
1871 /* restart engine */
1872 ahci_stop_engine(ap);
1873 ahci_start_engine(ap);
1876 /* perform recovery */
1877 sata_pmp_do_eh(ap, ata_std_prereset, ahci_softreset,
1878 ahci_hardreset, ahci_postreset,
1879 sata_pmp_std_prereset, ahci_pmp_softreset,
1880 sata_pmp_std_hardreset, sata_pmp_std_postreset);
1883 static void ahci_vt8251_error_handler(struct ata_port *ap)
1885 if (!(ap->pflags & ATA_PFLAG_FROZEN)) {
1886 /* restart engine */
1887 ahci_stop_engine(ap);
1888 ahci_start_engine(ap);
1891 /* perform recovery */
1892 ata_do_eh(ap, ata_std_prereset, ahci_softreset, ahci_vt8251_hardreset,
1896 static void ahci_p5wdh_error_handler(struct ata_port *ap)
1898 if (!(ap->pflags & ATA_PFLAG_FROZEN)) {
1899 /* restart engine */
1900 ahci_stop_engine(ap);
1901 ahci_start_engine(ap);
1904 /* perform recovery */
1905 ata_do_eh(ap, ata_std_prereset, ahci_softreset, ahci_p5wdh_hardreset,
1909 static void ahci_post_internal_cmd(struct ata_queued_cmd *qc)
1911 struct ata_port *ap = qc->ap;
1913 /* make DMA engine forget about the failed command */
1914 if (qc->flags & ATA_QCFLAG_FAILED)
1915 ahci_kick_engine(ap, 1);
1918 static void ahci_pmp_attach(struct ata_port *ap)
1920 void __iomem *port_mmio = ahci_port_base(ap);
1921 struct ahci_port_priv *pp = ap->private_data;
1924 cmd = readl(port_mmio + PORT_CMD);
1925 cmd |= PORT_CMD_PMP;
1926 writel(cmd, port_mmio + PORT_CMD);
1928 pp->intr_mask |= PORT_IRQ_BAD_PMP;
1929 writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
1932 static void ahci_pmp_detach(struct ata_port *ap)
1934 void __iomem *port_mmio = ahci_port_base(ap);
1935 struct ahci_port_priv *pp = ap->private_data;
1938 cmd = readl(port_mmio + PORT_CMD);
1939 cmd &= ~PORT_CMD_PMP;
1940 writel(cmd, port_mmio + PORT_CMD);
1942 pp->intr_mask &= ~PORT_IRQ_BAD_PMP;
1943 writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
1946 static int ahci_port_resume(struct ata_port *ap)
1949 ahci_start_port(ap);
1951 if (ap->nr_pmp_links)
1952 ahci_pmp_attach(ap);
1954 ahci_pmp_detach(ap);
1960 static int ahci_port_suspend(struct ata_port *ap, pm_message_t mesg)
1962 const char *emsg = NULL;
1965 rc = ahci_deinit_port(ap, &emsg);
1967 ahci_power_down(ap);
1969 ata_port_printk(ap, KERN_ERR, "%s (%d)\n", emsg, rc);
1970 ahci_start_port(ap);
1976 static int ahci_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
1978 struct ata_host *host = dev_get_drvdata(&pdev->dev);
1979 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
1982 if (mesg.event & PM_EVENT_SLEEP) {
1983 /* AHCI spec rev1.1 section 8.3.3:
1984 * Software must disable interrupts prior to requesting a
1985 * transition of the HBA to D3 state.
1987 ctl = readl(mmio + HOST_CTL);
1988 ctl &= ~HOST_IRQ_EN;
1989 writel(ctl, mmio + HOST_CTL);
1990 readl(mmio + HOST_CTL); /* flush */
1993 return ata_pci_device_suspend(pdev, mesg);
1996 static int ahci_pci_device_resume(struct pci_dev *pdev)
1998 struct ata_host *host = dev_get_drvdata(&pdev->dev);
2001 rc = ata_pci_device_do_resume(pdev);
2005 if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
2006 rc = ahci_reset_controller(host);
2010 ahci_init_controller(host);
2013 ata_host_resume(host);
2019 static int ahci_port_start(struct ata_port *ap)
2021 struct device *dev = ap->host->dev;
2022 struct ahci_port_priv *pp;
2026 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
2030 mem = dmam_alloc_coherent(dev, AHCI_PORT_PRIV_DMA_SZ, &mem_dma,
2034 memset(mem, 0, AHCI_PORT_PRIV_DMA_SZ);
2037 * First item in chunk of DMA memory: 32-slot command table,
2038 * 32 bytes each in size
2041 pp->cmd_slot_dma = mem_dma;
2043 mem += AHCI_CMD_SLOT_SZ;
2044 mem_dma += AHCI_CMD_SLOT_SZ;
2047 * Second item: Received-FIS area
2050 pp->rx_fis_dma = mem_dma;
2052 mem += AHCI_RX_FIS_SZ;
2053 mem_dma += AHCI_RX_FIS_SZ;
2056 * Third item: data area for storing a single command
2057 * and its scatter-gather table
2060 pp->cmd_tbl_dma = mem_dma;
2063 * Save off initial list of interrupts to be enabled.
2064 * This could be changed later
2066 pp->intr_mask = DEF_PORT_IRQ;
2068 ap->private_data = pp;
2070 /* engage engines, captain */
2071 return ahci_port_resume(ap);
2074 static void ahci_port_stop(struct ata_port *ap)
2076 const char *emsg = NULL;
2079 /* de-initialize port */
2080 rc = ahci_deinit_port(ap, &emsg);
2082 ata_port_printk(ap, KERN_WARNING, "%s (%d)\n", emsg, rc);
2085 static int ahci_configure_dma_masks(struct pci_dev *pdev, int using_dac)
2090 !pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
2091 rc = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
2093 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
2095 dev_printk(KERN_ERR, &pdev->dev,
2096 "64-bit DMA enable failed\n");
2101 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
2103 dev_printk(KERN_ERR, &pdev->dev,
2104 "32-bit DMA enable failed\n");
2107 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
2109 dev_printk(KERN_ERR, &pdev->dev,
2110 "32-bit consistent DMA enable failed\n");
2117 static void ahci_print_info(struct ata_host *host)
2119 struct ahci_host_priv *hpriv = host->private_data;
2120 struct pci_dev *pdev = to_pci_dev(host->dev);
2121 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
2122 u32 vers, cap, impl, speed;
2123 const char *speed_s;
2127 vers = readl(mmio + HOST_VERSION);
2129 impl = hpriv->port_map;
2131 speed = (cap >> 20) & 0xf;
2134 else if (speed == 2)
2139 pci_read_config_word(pdev, 0x0a, &cc);
2140 if (cc == PCI_CLASS_STORAGE_IDE)
2142 else if (cc == PCI_CLASS_STORAGE_SATA)
2144 else if (cc == PCI_CLASS_STORAGE_RAID)
2149 dev_printk(KERN_INFO, &pdev->dev,
2150 "AHCI %02x%02x.%02x%02x "
2151 "%u slots %u ports %s Gbps 0x%x impl %s mode\n"
2154 (vers >> 24) & 0xff,
2155 (vers >> 16) & 0xff,
2159 ((cap >> 8) & 0x1f) + 1,
2165 dev_printk(KERN_INFO, &pdev->dev,
2171 cap & (1 << 31) ? "64bit " : "",
2172 cap & (1 << 30) ? "ncq " : "",
2173 cap & (1 << 29) ? "sntf " : "",
2174 cap & (1 << 28) ? "ilck " : "",
2175 cap & (1 << 27) ? "stag " : "",
2176 cap & (1 << 26) ? "pm " : "",
2177 cap & (1 << 25) ? "led " : "",
2179 cap & (1 << 24) ? "clo " : "",
2180 cap & (1 << 19) ? "nz " : "",
2181 cap & (1 << 18) ? "only " : "",
2182 cap & (1 << 17) ? "pmp " : "",
2183 cap & (1 << 15) ? "pio " : "",
2184 cap & (1 << 14) ? "slum " : "",
2185 cap & (1 << 13) ? "part " : ""
2189 /* On ASUS P5W DH Deluxe, the second port of PCI device 00:1f.2 is
2190 * hardwired to on-board SIMG 4726. The chipset is ICH8 and doesn't
2191 * support PMP and the 4726 either directly exports the device
2192 * attached to the first downstream port or acts as a hardware storage
2193 * controller and emulate a single ATA device (can be RAID 0/1 or some
2194 * other configuration).
2196 * When there's no device attached to the first downstream port of the
2197 * 4726, "Config Disk" appears, which is a pseudo ATA device to
2198 * configure the 4726. However, ATA emulation of the device is very
2199 * lame. It doesn't send signature D2H Reg FIS after the initial
2200 * hardreset, pukes on SRST w/ PMP==0 and has bunch of other issues.
2202 * The following function works around the problem by always using
2203 * hardreset on the port and not depending on receiving signature FIS
2204 * afterward. If signature FIS isn't received soon, ATA class is
2205 * assumed without follow-up softreset.
2207 static void ahci_p5wdh_workaround(struct ata_host *host)
2209 static struct dmi_system_id sysids[] = {
2211 .ident = "P5W DH Deluxe",
2213 DMI_MATCH(DMI_SYS_VENDOR,
2214 "ASUSTEK COMPUTER INC"),
2215 DMI_MATCH(DMI_PRODUCT_NAME, "P5W DH Deluxe"),
2220 struct pci_dev *pdev = to_pci_dev(host->dev);
2222 if (pdev->bus->number == 0 && pdev->devfn == PCI_DEVFN(0x1f, 2) &&
2223 dmi_check_system(sysids)) {
2224 struct ata_port *ap = host->ports[1];
2226 dev_printk(KERN_INFO, &pdev->dev, "enabling ASUS P5W DH "
2227 "Deluxe on-board SIMG4726 workaround\n");
2229 ap->ops = &ahci_p5wdh_ops;
2230 ap->link.flags |= ATA_LFLAG_NO_SRST | ATA_LFLAG_ASSUME_ATA;
2234 static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
2236 static int printed_version;
2237 struct ata_port_info pi = ahci_port_info[ent->driver_data];
2238 const struct ata_port_info *ppi[] = { &pi, NULL };
2239 struct device *dev = &pdev->dev;
2240 struct ahci_host_priv *hpriv;
2241 struct ata_host *host;
2246 WARN_ON(ATA_MAX_QUEUE > AHCI_MAX_CMDS);
2248 if (!printed_version++)
2249 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
2251 /* acquire resources */
2252 rc = pcim_enable_device(pdev);
2256 /* AHCI controllers often implement SFF compatible interface.
2257 * Grab all PCI BARs just in case.
2259 rc = pcim_iomap_regions_request_all(pdev, 1 << AHCI_PCI_BAR, DRV_NAME);
2261 pcim_pin_device(pdev);
2265 if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
2266 (pdev->device == 0x2652 || pdev->device == 0x2653)) {
2269 /* ICH6s share the same PCI ID for both piix and ahci
2270 * modes. Enabling ahci mode while MAP indicates
2271 * combined mode is a bad idea. Yield to ata_piix.
2273 pci_read_config_byte(pdev, ICH_MAP, &map);
2275 dev_printk(KERN_INFO, &pdev->dev, "controller is in "
2276 "combined mode, can't enable AHCI mode\n");
2281 hpriv = devm_kzalloc(dev, sizeof(*hpriv), GFP_KERNEL);
2284 hpriv->flags |= (unsigned long)pi.private_data;
2286 if ((hpriv->flags & AHCI_HFLAG_NO_MSI) || pci_enable_msi(pdev))
2289 /* save initial config */
2290 ahci_save_initial_config(pdev, hpriv);
2293 if (hpriv->cap & HOST_CAP_NCQ)
2294 pi.flags |= ATA_FLAG_NCQ;
2296 if (hpriv->cap & HOST_CAP_PMP)
2297 pi.flags |= ATA_FLAG_PMP;
2299 /* CAP.NP sometimes indicate the index of the last enabled
2300 * port, at other times, that of the last possible port, so
2301 * determining the maximum port number requires looking at
2302 * both CAP.NP and port_map.
2304 n_ports = max(ahci_nr_ports(hpriv->cap), fls(hpriv->port_map));
2306 host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
2309 host->iomap = pcim_iomap_table(pdev);
2310 host->private_data = hpriv;
2312 for (i = 0; i < host->n_ports; i++) {
2313 struct ata_port *ap = host->ports[i];
2314 void __iomem *port_mmio = ahci_port_base(ap);
2316 ata_port_pbar_desc(ap, AHCI_PCI_BAR, -1, "abar");
2317 ata_port_pbar_desc(ap, AHCI_PCI_BAR,
2318 0x100 + ap->port_no * 0x80, "port");
2320 /* set initial link pm policy */
2321 ap->pm_policy = NOT_AVAILABLE;
2323 /* standard SATA port setup */
2324 if (hpriv->port_map & (1 << i))
2325 ap->ioaddr.cmd_addr = port_mmio;
2327 /* disabled/not-implemented port */
2329 ap->ops = &ata_dummy_port_ops;
2332 /* apply workaround for ASUS P5W DH Deluxe mainboard */
2333 ahci_p5wdh_workaround(host);
2335 /* initialize adapter */
2336 rc = ahci_configure_dma_masks(pdev, hpriv->cap & HOST_CAP_64);
2340 rc = ahci_reset_controller(host);
2344 ahci_init_controller(host);
2345 ahci_print_info(host);
2347 pci_set_master(pdev);
2348 return ata_host_activate(host, pdev->irq, ahci_interrupt, IRQF_SHARED,
2352 static int __init ahci_init(void)
2354 return pci_register_driver(&ahci_pci_driver);
2357 static void __exit ahci_exit(void)
2359 pci_unregister_driver(&ahci_pci_driver);
2363 MODULE_AUTHOR("Jeff Garzik");
2364 MODULE_DESCRIPTION("AHCI SATA low-level driver");
2365 MODULE_LICENSE("GPL");
2366 MODULE_DEVICE_TABLE(pci, ahci_pci_tbl);
2367 MODULE_VERSION(DRV_VERSION);
2369 module_init(ahci_init);
2370 module_exit(ahci_exit);