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_enable_alpm(struct ata_port *ap,
54 static void ahci_disable_alpm(struct ata_port *ap);
59 AHCI_MAX_SG = 168, /* hardware max is 64K */
60 AHCI_DMA_BOUNDARY = 0xffffffff,
61 AHCI_USE_CLUSTERING = 1,
64 AHCI_CMD_SLOT_SZ = AHCI_MAX_CMDS * AHCI_CMD_SZ,
66 AHCI_CMD_TBL_CDB = 0x40,
67 AHCI_CMD_TBL_HDR_SZ = 0x80,
68 AHCI_CMD_TBL_SZ = AHCI_CMD_TBL_HDR_SZ + (AHCI_MAX_SG * 16),
69 AHCI_CMD_TBL_AR_SZ = AHCI_CMD_TBL_SZ * AHCI_MAX_CMDS,
70 AHCI_PORT_PRIV_DMA_SZ = AHCI_CMD_SLOT_SZ + AHCI_CMD_TBL_AR_SZ +
72 AHCI_IRQ_ON_SG = (1 << 31),
73 AHCI_CMD_ATAPI = (1 << 5),
74 AHCI_CMD_WRITE = (1 << 6),
75 AHCI_CMD_PREFETCH = (1 << 7),
76 AHCI_CMD_RESET = (1 << 8),
77 AHCI_CMD_CLR_BUSY = (1 << 10),
79 RX_FIS_D2H_REG = 0x40, /* offset of D2H Register FIS data */
80 RX_FIS_SDB = 0x58, /* offset of SDB FIS data */
81 RX_FIS_UNK = 0x60, /* offset of Unknown FIS data */
84 board_ahci_vt8251 = 1,
85 board_ahci_ign_iferr = 2,
89 /* global controller registers */
90 HOST_CAP = 0x00, /* host capabilities */
91 HOST_CTL = 0x04, /* global host control */
92 HOST_IRQ_STAT = 0x08, /* interrupt status */
93 HOST_PORTS_IMPL = 0x0c, /* bitmap of implemented ports */
94 HOST_VERSION = 0x10, /* AHCI spec. version compliancy */
97 HOST_RESET = (1 << 0), /* reset controller; self-clear */
98 HOST_IRQ_EN = (1 << 1), /* global IRQ enable */
99 HOST_AHCI_EN = (1 << 31), /* AHCI enabled */
102 HOST_CAP_SSC = (1 << 14), /* Slumber capable */
103 HOST_CAP_PMP = (1 << 17), /* Port Multiplier support */
104 HOST_CAP_CLO = (1 << 24), /* Command List Override support */
105 HOST_CAP_ALPM = (1 << 26), /* Aggressive Link PM support */
106 HOST_CAP_SSS = (1 << 27), /* Staggered Spin-up */
107 HOST_CAP_SNTF = (1 << 29), /* SNotification register */
108 HOST_CAP_NCQ = (1 << 30), /* Native Command Queueing */
109 HOST_CAP_64 = (1 << 31), /* PCI DAC (64-bit DMA) support */
111 /* registers for each SATA port */
112 PORT_LST_ADDR = 0x00, /* command list DMA addr */
113 PORT_LST_ADDR_HI = 0x04, /* command list DMA addr hi */
114 PORT_FIS_ADDR = 0x08, /* FIS rx buf addr */
115 PORT_FIS_ADDR_HI = 0x0c, /* FIS rx buf addr hi */
116 PORT_IRQ_STAT = 0x10, /* interrupt status */
117 PORT_IRQ_MASK = 0x14, /* interrupt enable/disable mask */
118 PORT_CMD = 0x18, /* port command */
119 PORT_TFDATA = 0x20, /* taskfile data */
120 PORT_SIG = 0x24, /* device TF signature */
121 PORT_CMD_ISSUE = 0x38, /* command issue */
122 PORT_SCR_STAT = 0x28, /* SATA phy register: SStatus */
123 PORT_SCR_CTL = 0x2c, /* SATA phy register: SControl */
124 PORT_SCR_ERR = 0x30, /* SATA phy register: SError */
125 PORT_SCR_ACT = 0x34, /* SATA phy register: SActive */
126 PORT_SCR_NTF = 0x3c, /* SATA phy register: SNotification */
128 /* PORT_IRQ_{STAT,MASK} bits */
129 PORT_IRQ_COLD_PRES = (1 << 31), /* cold presence detect */
130 PORT_IRQ_TF_ERR = (1 << 30), /* task file error */
131 PORT_IRQ_HBUS_ERR = (1 << 29), /* host bus fatal error */
132 PORT_IRQ_HBUS_DATA_ERR = (1 << 28), /* host bus data error */
133 PORT_IRQ_IF_ERR = (1 << 27), /* interface fatal error */
134 PORT_IRQ_IF_NONFATAL = (1 << 26), /* interface non-fatal error */
135 PORT_IRQ_OVERFLOW = (1 << 24), /* xfer exhausted available S/G */
136 PORT_IRQ_BAD_PMP = (1 << 23), /* incorrect port multiplier */
138 PORT_IRQ_PHYRDY = (1 << 22), /* PhyRdy changed */
139 PORT_IRQ_DEV_ILCK = (1 << 7), /* device interlock */
140 PORT_IRQ_CONNECT = (1 << 6), /* port connect change status */
141 PORT_IRQ_SG_DONE = (1 << 5), /* descriptor processed */
142 PORT_IRQ_UNK_FIS = (1 << 4), /* unknown FIS rx'd */
143 PORT_IRQ_SDB_FIS = (1 << 3), /* Set Device Bits FIS rx'd */
144 PORT_IRQ_DMAS_FIS = (1 << 2), /* DMA Setup FIS rx'd */
145 PORT_IRQ_PIOS_FIS = (1 << 1), /* PIO Setup FIS rx'd */
146 PORT_IRQ_D2H_REG_FIS = (1 << 0), /* D2H Register FIS rx'd */
148 PORT_IRQ_FREEZE = PORT_IRQ_HBUS_ERR |
154 PORT_IRQ_ERROR = PORT_IRQ_FREEZE |
156 PORT_IRQ_HBUS_DATA_ERR,
157 DEF_PORT_IRQ = PORT_IRQ_ERROR | PORT_IRQ_SG_DONE |
158 PORT_IRQ_SDB_FIS | PORT_IRQ_DMAS_FIS |
159 PORT_IRQ_PIOS_FIS | PORT_IRQ_D2H_REG_FIS,
162 PORT_CMD_ASP = (1 << 27), /* Aggressive Slumber/Partial */
163 PORT_CMD_ALPE = (1 << 26), /* Aggressive Link PM enable */
164 PORT_CMD_ATAPI = (1 << 24), /* Device is ATAPI */
165 PORT_CMD_PMP = (1 << 17), /* PMP attached */
166 PORT_CMD_LIST_ON = (1 << 15), /* cmd list DMA engine running */
167 PORT_CMD_FIS_ON = (1 << 14), /* FIS DMA engine running */
168 PORT_CMD_FIS_RX = (1 << 4), /* Enable FIS receive DMA engine */
169 PORT_CMD_CLO = (1 << 3), /* Command list override */
170 PORT_CMD_POWER_ON = (1 << 2), /* Power up device */
171 PORT_CMD_SPIN_UP = (1 << 1), /* Spin up device */
172 PORT_CMD_START = (1 << 0), /* Enable port DMA engine */
174 PORT_CMD_ICC_MASK = (0xf << 28), /* i/f ICC state mask */
175 PORT_CMD_ICC_ACTIVE = (0x1 << 28), /* Put i/f in active state */
176 PORT_CMD_ICC_PARTIAL = (0x2 << 28), /* Put i/f in partial state */
177 PORT_CMD_ICC_SLUMBER = (0x6 << 28), /* Put i/f in slumber state */
179 /* hpriv->flags bits */
180 AHCI_HFLAG_NO_NCQ = (1 << 0),
181 AHCI_HFLAG_IGN_IRQ_IF_ERR = (1 << 1), /* ignore IRQ_IF_ERR */
182 AHCI_HFLAG_IGN_SERR_INTERNAL = (1 << 2), /* ignore SERR_INTERNAL */
183 AHCI_HFLAG_32BIT_ONLY = (1 << 3), /* force 32bit */
184 AHCI_HFLAG_MV_PATA = (1 << 4), /* PATA port */
185 AHCI_HFLAG_NO_MSI = (1 << 5), /* no PCI MSI */
186 AHCI_HFLAG_NO_PMP = (1 << 6), /* no PMP */
187 AHCI_HFLAG_NO_HOTPLUG = (1 << 7), /* ignore PxSERR.DIAG.N */
191 AHCI_FLAG_COMMON = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
192 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA |
193 ATA_FLAG_ACPI_SATA | ATA_FLAG_AN |
195 AHCI_LFLAG_COMMON = ATA_LFLAG_SKIP_D2H_BSY,
198 struct ahci_cmd_hdr {
213 struct ahci_host_priv {
214 unsigned int flags; /* AHCI_HFLAG_* */
215 u32 cap; /* cap to use */
216 u32 port_map; /* port map to use */
217 u32 saved_cap; /* saved initial cap */
218 u32 saved_port_map; /* saved initial port_map */
221 struct ahci_port_priv {
222 struct ata_link *active_link;
223 struct ahci_cmd_hdr *cmd_slot;
224 dma_addr_t cmd_slot_dma;
226 dma_addr_t cmd_tbl_dma;
228 dma_addr_t rx_fis_dma;
229 /* for NCQ spurious interrupt analysis */
230 unsigned int ncq_saw_d2h:1;
231 unsigned int ncq_saw_dmas:1;
232 unsigned int ncq_saw_sdb:1;
233 u32 intr_mask; /* interrupts to enable */
236 static int ahci_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val);
237 static int ahci_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val);
238 static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
239 static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc);
240 static void ahci_irq_clear(struct ata_port *ap);
241 static int ahci_port_start(struct ata_port *ap);
242 static void ahci_port_stop(struct ata_port *ap);
243 static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
244 static void ahci_qc_prep(struct ata_queued_cmd *qc);
245 static u8 ahci_check_status(struct ata_port *ap);
246 static void ahci_freeze(struct ata_port *ap);
247 static void ahci_thaw(struct ata_port *ap);
248 static void ahci_pmp_attach(struct ata_port *ap);
249 static void ahci_pmp_detach(struct ata_port *ap);
250 static void ahci_error_handler(struct ata_port *ap);
251 static void ahci_vt8251_error_handler(struct ata_port *ap);
252 static void ahci_p5wdh_error_handler(struct ata_port *ap);
253 static void ahci_post_internal_cmd(struct ata_queued_cmd *qc);
254 static int ahci_port_resume(struct ata_port *ap);
255 static unsigned int ahci_fill_sg(struct ata_queued_cmd *qc, void *cmd_tbl);
256 static void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag,
259 static int ahci_port_suspend(struct ata_port *ap, pm_message_t mesg);
260 static int ahci_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
261 static int ahci_pci_device_resume(struct pci_dev *pdev);
264 static struct class_device_attribute *ahci_shost_attrs[] = {
265 &class_device_attr_link_power_management_policy,
269 static struct scsi_host_template ahci_sht = {
270 .module = THIS_MODULE,
272 .ioctl = ata_scsi_ioctl,
273 .queuecommand = ata_scsi_queuecmd,
274 .change_queue_depth = ata_scsi_change_queue_depth,
275 .can_queue = AHCI_MAX_CMDS - 1,
276 .this_id = ATA_SHT_THIS_ID,
277 .sg_tablesize = AHCI_MAX_SG,
278 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
279 .emulated = ATA_SHT_EMULATED,
280 .use_clustering = AHCI_USE_CLUSTERING,
281 .proc_name = DRV_NAME,
282 .dma_boundary = AHCI_DMA_BOUNDARY,
283 .slave_configure = ata_scsi_slave_config,
284 .slave_destroy = ata_scsi_slave_destroy,
285 .bios_param = ata_std_bios_param,
286 .shost_attrs = ahci_shost_attrs,
289 static const struct ata_port_operations ahci_ops = {
290 .check_status = ahci_check_status,
291 .check_altstatus = ahci_check_status,
292 .dev_select = ata_noop_dev_select,
294 .tf_read = ahci_tf_read,
296 .qc_defer = sata_pmp_qc_defer_cmd_switch,
297 .qc_prep = ahci_qc_prep,
298 .qc_issue = ahci_qc_issue,
300 .irq_clear = ahci_irq_clear,
302 .scr_read = ahci_scr_read,
303 .scr_write = ahci_scr_write,
305 .freeze = ahci_freeze,
308 .error_handler = ahci_error_handler,
309 .post_internal_cmd = ahci_post_internal_cmd,
311 .pmp_attach = ahci_pmp_attach,
312 .pmp_detach = ahci_pmp_detach,
315 .port_suspend = ahci_port_suspend,
316 .port_resume = ahci_port_resume,
318 .enable_pm = ahci_enable_alpm,
319 .disable_pm = ahci_disable_alpm,
321 .port_start = ahci_port_start,
322 .port_stop = ahci_port_stop,
325 static const struct ata_port_operations ahci_vt8251_ops = {
326 .check_status = ahci_check_status,
327 .check_altstatus = ahci_check_status,
328 .dev_select = ata_noop_dev_select,
330 .tf_read = ahci_tf_read,
332 .qc_defer = sata_pmp_qc_defer_cmd_switch,
333 .qc_prep = ahci_qc_prep,
334 .qc_issue = ahci_qc_issue,
336 .irq_clear = ahci_irq_clear,
338 .scr_read = ahci_scr_read,
339 .scr_write = ahci_scr_write,
341 .freeze = ahci_freeze,
344 .error_handler = ahci_vt8251_error_handler,
345 .post_internal_cmd = ahci_post_internal_cmd,
347 .pmp_attach = ahci_pmp_attach,
348 .pmp_detach = ahci_pmp_detach,
351 .port_suspend = ahci_port_suspend,
352 .port_resume = ahci_port_resume,
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 .tf_read = ahci_tf_read,
366 .qc_defer = sata_pmp_qc_defer_cmd_switch,
367 .qc_prep = ahci_qc_prep,
368 .qc_issue = ahci_qc_issue,
370 .irq_clear = ahci_irq_clear,
372 .scr_read = ahci_scr_read,
373 .scr_write = ahci_scr_write,
375 .freeze = ahci_freeze,
378 .error_handler = ahci_p5wdh_error_handler,
379 .post_internal_cmd = ahci_post_internal_cmd,
381 .pmp_attach = ahci_pmp_attach,
382 .pmp_detach = ahci_pmp_detach,
385 .port_suspend = ahci_port_suspend,
386 .port_resume = ahci_port_resume,
389 .port_start = ahci_port_start,
390 .port_stop = ahci_port_stop,
393 #define AHCI_HFLAGS(flags) .private_data = (void *)(flags)
395 static const struct ata_port_info ahci_port_info[] = {
398 .flags = AHCI_FLAG_COMMON,
399 .link_flags = AHCI_LFLAG_COMMON,
400 .pio_mask = 0x1f, /* pio0-4 */
401 .udma_mask = ATA_UDMA6,
402 .port_ops = &ahci_ops,
404 /* board_ahci_vt8251 */
406 AHCI_HFLAGS (AHCI_HFLAG_NO_NCQ | AHCI_HFLAG_NO_PMP),
407 .flags = AHCI_FLAG_COMMON,
408 .link_flags = AHCI_LFLAG_COMMON | ATA_LFLAG_HRST_TO_RESUME,
409 .pio_mask = 0x1f, /* pio0-4 */
410 .udma_mask = ATA_UDMA6,
411 .port_ops = &ahci_vt8251_ops,
413 /* board_ahci_ign_iferr */
415 AHCI_HFLAGS (AHCI_HFLAG_IGN_IRQ_IF_ERR),
416 .flags = AHCI_FLAG_COMMON,
417 .link_flags = AHCI_LFLAG_COMMON,
418 .pio_mask = 0x1f, /* pio0-4 */
419 .udma_mask = ATA_UDMA6,
420 .port_ops = &ahci_ops,
422 /* board_ahci_sb600 */
424 AHCI_HFLAGS (AHCI_HFLAG_IGN_SERR_INTERNAL |
425 AHCI_HFLAG_32BIT_ONLY | AHCI_HFLAG_NO_PMP),
426 .flags = AHCI_FLAG_COMMON,
427 .link_flags = AHCI_LFLAG_COMMON,
428 .pio_mask = 0x1f, /* pio0-4 */
429 .udma_mask = ATA_UDMA6,
430 .port_ops = &ahci_ops,
434 AHCI_HFLAGS (AHCI_HFLAG_NO_NCQ | AHCI_HFLAG_NO_MSI |
436 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
437 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
438 .link_flags = AHCI_LFLAG_COMMON,
439 .pio_mask = 0x1f, /* pio0-4 */
440 .udma_mask = ATA_UDMA6,
441 .port_ops = &ahci_ops,
445 static const struct pci_device_id ahci_pci_tbl[] = {
447 { PCI_VDEVICE(INTEL, 0x2652), board_ahci }, /* ICH6 */
448 { PCI_VDEVICE(INTEL, 0x2653), board_ahci }, /* ICH6M */
449 { PCI_VDEVICE(INTEL, 0x27c1), board_ahci }, /* ICH7 */
450 { PCI_VDEVICE(INTEL, 0x27c5), board_ahci }, /* ICH7M */
451 { PCI_VDEVICE(INTEL, 0x27c3), board_ahci }, /* ICH7R */
452 { PCI_VDEVICE(AL, 0x5288), board_ahci_ign_iferr }, /* ULi M5288 */
453 { PCI_VDEVICE(INTEL, 0x2681), board_ahci }, /* ESB2 */
454 { PCI_VDEVICE(INTEL, 0x2682), board_ahci }, /* ESB2 */
455 { PCI_VDEVICE(INTEL, 0x2683), board_ahci }, /* ESB2 */
456 { PCI_VDEVICE(INTEL, 0x27c6), board_ahci }, /* ICH7-M DH */
457 { PCI_VDEVICE(INTEL, 0x2821), board_ahci }, /* ICH8 */
458 { PCI_VDEVICE(INTEL, 0x2822), board_ahci }, /* ICH8 */
459 { PCI_VDEVICE(INTEL, 0x2824), board_ahci }, /* ICH8 */
460 { PCI_VDEVICE(INTEL, 0x2829), board_ahci }, /* ICH8M */
461 { PCI_VDEVICE(INTEL, 0x282a), board_ahci }, /* ICH8M */
462 { PCI_VDEVICE(INTEL, 0x2922), board_ahci }, /* ICH9 */
463 { PCI_VDEVICE(INTEL, 0x2923), board_ahci }, /* ICH9 */
464 { PCI_VDEVICE(INTEL, 0x2924), board_ahci }, /* ICH9 */
465 { PCI_VDEVICE(INTEL, 0x2925), board_ahci }, /* ICH9 */
466 { PCI_VDEVICE(INTEL, 0x2927), board_ahci }, /* ICH9 */
467 { PCI_VDEVICE(INTEL, 0x2929), board_ahci }, /* ICH9M */
468 { PCI_VDEVICE(INTEL, 0x292a), board_ahci }, /* ICH9M */
469 { PCI_VDEVICE(INTEL, 0x292b), board_ahci }, /* ICH9M */
470 { PCI_VDEVICE(INTEL, 0x292c), board_ahci }, /* ICH9M */
471 { PCI_VDEVICE(INTEL, 0x292f), board_ahci }, /* ICH9M */
472 { PCI_VDEVICE(INTEL, 0x294d), board_ahci }, /* ICH9 */
473 { PCI_VDEVICE(INTEL, 0x294e), board_ahci }, /* ICH9M */
474 { PCI_VDEVICE(INTEL, 0x502a), board_ahci }, /* Tolapai */
475 { PCI_VDEVICE(INTEL, 0x502b), board_ahci }, /* Tolapai */
477 /* JMicron 360/1/3/5/6, match class to avoid IDE function */
478 { PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
479 PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci_ign_iferr },
482 { PCI_VDEVICE(ATI, 0x4380), board_ahci_sb600 }, /* ATI SB600 */
483 { PCI_VDEVICE(ATI, 0x4390), board_ahci_sb600 }, /* ATI SB700/800 */
484 { PCI_VDEVICE(ATI, 0x4391), board_ahci_sb600 }, /* ATI SB700/800 */
485 { PCI_VDEVICE(ATI, 0x4392), board_ahci_sb600 }, /* ATI SB700/800 */
486 { PCI_VDEVICE(ATI, 0x4393), board_ahci_sb600 }, /* ATI SB700/800 */
487 { PCI_VDEVICE(ATI, 0x4394), board_ahci_sb600 }, /* ATI SB700/800 */
488 { PCI_VDEVICE(ATI, 0x4395), board_ahci_sb600 }, /* ATI SB700/800 */
491 { PCI_VDEVICE(VIA, 0x3349), board_ahci_vt8251 }, /* VIA VT8251 */
492 { PCI_VDEVICE(VIA, 0x6287), board_ahci_vt8251 }, /* VIA VT8251 */
495 { PCI_VDEVICE(NVIDIA, 0x044c), board_ahci }, /* MCP65 */
496 { PCI_VDEVICE(NVIDIA, 0x044d), board_ahci }, /* MCP65 */
497 { PCI_VDEVICE(NVIDIA, 0x044e), board_ahci }, /* MCP65 */
498 { PCI_VDEVICE(NVIDIA, 0x044f), board_ahci }, /* MCP65 */
499 { PCI_VDEVICE(NVIDIA, 0x045c), board_ahci }, /* MCP65 */
500 { PCI_VDEVICE(NVIDIA, 0x045d), board_ahci }, /* MCP65 */
501 { PCI_VDEVICE(NVIDIA, 0x045e), board_ahci }, /* MCP65 */
502 { PCI_VDEVICE(NVIDIA, 0x045f), board_ahci }, /* MCP65 */
503 { PCI_VDEVICE(NVIDIA, 0x0550), board_ahci }, /* MCP67 */
504 { PCI_VDEVICE(NVIDIA, 0x0551), board_ahci }, /* MCP67 */
505 { PCI_VDEVICE(NVIDIA, 0x0552), board_ahci }, /* MCP67 */
506 { PCI_VDEVICE(NVIDIA, 0x0553), board_ahci }, /* MCP67 */
507 { PCI_VDEVICE(NVIDIA, 0x0554), board_ahci }, /* MCP67 */
508 { PCI_VDEVICE(NVIDIA, 0x0555), board_ahci }, /* MCP67 */
509 { PCI_VDEVICE(NVIDIA, 0x0556), board_ahci }, /* MCP67 */
510 { PCI_VDEVICE(NVIDIA, 0x0557), board_ahci }, /* MCP67 */
511 { PCI_VDEVICE(NVIDIA, 0x0558), board_ahci }, /* MCP67 */
512 { PCI_VDEVICE(NVIDIA, 0x0559), board_ahci }, /* MCP67 */
513 { PCI_VDEVICE(NVIDIA, 0x055a), board_ahci }, /* MCP67 */
514 { PCI_VDEVICE(NVIDIA, 0x055b), board_ahci }, /* MCP67 */
515 { PCI_VDEVICE(NVIDIA, 0x07f0), board_ahci }, /* MCP73 */
516 { PCI_VDEVICE(NVIDIA, 0x07f1), board_ahci }, /* MCP73 */
517 { PCI_VDEVICE(NVIDIA, 0x07f2), board_ahci }, /* MCP73 */
518 { PCI_VDEVICE(NVIDIA, 0x07f3), board_ahci }, /* MCP73 */
519 { PCI_VDEVICE(NVIDIA, 0x07f4), board_ahci }, /* MCP73 */
520 { PCI_VDEVICE(NVIDIA, 0x07f5), board_ahci }, /* MCP73 */
521 { PCI_VDEVICE(NVIDIA, 0x07f6), board_ahci }, /* MCP73 */
522 { PCI_VDEVICE(NVIDIA, 0x07f7), board_ahci }, /* MCP73 */
523 { PCI_VDEVICE(NVIDIA, 0x07f8), board_ahci }, /* MCP73 */
524 { PCI_VDEVICE(NVIDIA, 0x07f9), board_ahci }, /* MCP73 */
525 { PCI_VDEVICE(NVIDIA, 0x07fa), board_ahci }, /* MCP73 */
526 { PCI_VDEVICE(NVIDIA, 0x07fb), board_ahci }, /* MCP73 */
527 { PCI_VDEVICE(NVIDIA, 0x0ad0), board_ahci }, /* MCP77 */
528 { PCI_VDEVICE(NVIDIA, 0x0ad1), board_ahci }, /* MCP77 */
529 { PCI_VDEVICE(NVIDIA, 0x0ad2), board_ahci }, /* MCP77 */
530 { PCI_VDEVICE(NVIDIA, 0x0ad3), board_ahci }, /* MCP77 */
531 { PCI_VDEVICE(NVIDIA, 0x0ad4), board_ahci }, /* MCP77 */
532 { PCI_VDEVICE(NVIDIA, 0x0ad5), board_ahci }, /* MCP77 */
533 { PCI_VDEVICE(NVIDIA, 0x0ad6), board_ahci }, /* MCP77 */
534 { PCI_VDEVICE(NVIDIA, 0x0ad7), board_ahci }, /* MCP77 */
535 { PCI_VDEVICE(NVIDIA, 0x0ad8), board_ahci }, /* MCP77 */
536 { PCI_VDEVICE(NVIDIA, 0x0ad9), board_ahci }, /* MCP77 */
537 { PCI_VDEVICE(NVIDIA, 0x0ada), board_ahci }, /* MCP77 */
538 { PCI_VDEVICE(NVIDIA, 0x0adb), board_ahci }, /* MCP77 */
539 { PCI_VDEVICE(NVIDIA, 0x0ab4), board_ahci }, /* MCP79 */
540 { PCI_VDEVICE(NVIDIA, 0x0ab5), board_ahci }, /* MCP79 */
541 { PCI_VDEVICE(NVIDIA, 0x0ab6), board_ahci }, /* MCP79 */
542 { PCI_VDEVICE(NVIDIA, 0x0ab7), board_ahci }, /* MCP79 */
543 { PCI_VDEVICE(NVIDIA, 0x0ab8), board_ahci }, /* MCP79 */
544 { PCI_VDEVICE(NVIDIA, 0x0ab9), board_ahci }, /* MCP79 */
545 { PCI_VDEVICE(NVIDIA, 0x0aba), board_ahci }, /* MCP79 */
546 { PCI_VDEVICE(NVIDIA, 0x0abb), board_ahci }, /* MCP79 */
547 { PCI_VDEVICE(NVIDIA, 0x0abc), board_ahci }, /* MCP79 */
548 { PCI_VDEVICE(NVIDIA, 0x0abd), board_ahci }, /* MCP79 */
549 { PCI_VDEVICE(NVIDIA, 0x0abe), board_ahci }, /* MCP79 */
550 { PCI_VDEVICE(NVIDIA, 0x0abf), board_ahci }, /* MCP79 */
553 { PCI_VDEVICE(SI, 0x1184), board_ahci }, /* SiS 966 */
554 { PCI_VDEVICE(SI, 0x1185), board_ahci }, /* SiS 966 */
555 { PCI_VDEVICE(SI, 0x0186), board_ahci }, /* SiS 968 */
558 { PCI_VDEVICE(MARVELL, 0x6145), board_ahci_mv }, /* 6145 */
560 /* Generic, PCI class code for AHCI */
561 { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
562 PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci },
564 { } /* terminate list */
568 static struct pci_driver ahci_pci_driver = {
570 .id_table = ahci_pci_tbl,
571 .probe = ahci_init_one,
572 .remove = ata_pci_remove_one,
574 .suspend = ahci_pci_device_suspend,
575 .resume = ahci_pci_device_resume,
580 static inline int ahci_nr_ports(u32 cap)
582 return (cap & 0x1f) + 1;
585 static inline void __iomem *__ahci_port_base(struct ata_host *host,
586 unsigned int port_no)
588 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
590 return mmio + 0x100 + (port_no * 0x80);
593 static inline void __iomem *ahci_port_base(struct ata_port *ap)
595 return __ahci_port_base(ap->host, ap->port_no);
599 * ahci_save_initial_config - Save and fixup initial config values
600 * @pdev: target PCI device
601 * @hpriv: host private area to store config values
603 * Some registers containing configuration info might be setup by
604 * BIOS and might be cleared on reset. This function saves the
605 * initial values of those registers into @hpriv such that they
606 * can be restored after controller reset.
608 * If inconsistent, config values are fixed up by this function.
613 static void ahci_save_initial_config(struct pci_dev *pdev,
614 struct ahci_host_priv *hpriv)
616 void __iomem *mmio = pcim_iomap_table(pdev)[AHCI_PCI_BAR];
620 /* Values prefixed with saved_ are written back to host after
621 * reset. Values without are used for driver operation.
623 hpriv->saved_cap = cap = readl(mmio + HOST_CAP);
624 hpriv->saved_port_map = port_map = readl(mmio + HOST_PORTS_IMPL);
626 /* some chips have errata preventing 64bit use */
627 if ((cap & HOST_CAP_64) && (hpriv->flags & AHCI_HFLAG_32BIT_ONLY)) {
628 dev_printk(KERN_INFO, &pdev->dev,
629 "controller can't do 64bit DMA, forcing 32bit\n");
633 if ((cap & HOST_CAP_NCQ) && (hpriv->flags & AHCI_HFLAG_NO_NCQ)) {
634 dev_printk(KERN_INFO, &pdev->dev,
635 "controller can't do NCQ, turning off CAP_NCQ\n");
636 cap &= ~HOST_CAP_NCQ;
639 if ((cap && HOST_CAP_PMP) && (hpriv->flags & AHCI_HFLAG_NO_PMP)) {
640 dev_printk(KERN_INFO, &pdev->dev,
641 "controller can't do PMP, turning off CAP_PMP\n");
642 cap &= ~HOST_CAP_PMP;
646 * Temporary Marvell 6145 hack: PATA port presence
647 * is asserted through the standard AHCI port
648 * presence register, as bit 4 (counting from 0)
650 if (hpriv->flags & AHCI_HFLAG_MV_PATA) {
651 dev_printk(KERN_ERR, &pdev->dev,
652 "MV_AHCI HACK: port_map %x -> %x\n",
654 hpriv->port_map & 0xf);
659 /* cross check port_map and cap.n_ports */
661 u32 tmp_port_map = port_map;
662 int n_ports = ahci_nr_ports(cap);
664 for (i = 0; i < AHCI_MAX_PORTS && n_ports; i++) {
665 if (tmp_port_map & (1 << i)) {
667 tmp_port_map &= ~(1 << i);
671 /* If n_ports and port_map are inconsistent, whine and
672 * clear port_map and let it be generated from n_ports.
674 if (n_ports || tmp_port_map) {
675 dev_printk(KERN_WARNING, &pdev->dev,
676 "nr_ports (%u) and implemented port map "
677 "(0x%x) don't match, using nr_ports\n",
678 ahci_nr_ports(cap), port_map);
683 /* fabricate port_map from cap.nr_ports */
685 port_map = (1 << ahci_nr_ports(cap)) - 1;
686 dev_printk(KERN_WARNING, &pdev->dev,
687 "forcing PORTS_IMPL to 0x%x\n", port_map);
689 /* write the fixed up value to the PI register */
690 hpriv->saved_port_map = port_map;
693 /* record values to use during operation */
695 hpriv->port_map = port_map;
699 * ahci_restore_initial_config - Restore initial config
700 * @host: target ATA host
702 * Restore initial config stored by ahci_save_initial_config().
707 static void ahci_restore_initial_config(struct ata_host *host)
709 struct ahci_host_priv *hpriv = host->private_data;
710 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
712 writel(hpriv->saved_cap, mmio + HOST_CAP);
713 writel(hpriv->saved_port_map, mmio + HOST_PORTS_IMPL);
714 (void) readl(mmio + HOST_PORTS_IMPL); /* flush */
717 static unsigned ahci_scr_offset(struct ata_port *ap, unsigned int sc_reg)
719 static const int offset[] = {
720 [SCR_STATUS] = PORT_SCR_STAT,
721 [SCR_CONTROL] = PORT_SCR_CTL,
722 [SCR_ERROR] = PORT_SCR_ERR,
723 [SCR_ACTIVE] = PORT_SCR_ACT,
724 [SCR_NOTIFICATION] = PORT_SCR_NTF,
726 struct ahci_host_priv *hpriv = ap->host->private_data;
728 if (sc_reg < ARRAY_SIZE(offset) &&
729 (sc_reg != SCR_NOTIFICATION || (hpriv->cap & HOST_CAP_SNTF)))
730 return offset[sc_reg];
734 static int ahci_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
736 void __iomem *port_mmio = ahci_port_base(ap);
737 int offset = ahci_scr_offset(ap, sc_reg);
740 *val = readl(port_mmio + offset);
746 static int ahci_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
748 void __iomem *port_mmio = ahci_port_base(ap);
749 int offset = ahci_scr_offset(ap, sc_reg);
752 writel(val, port_mmio + offset);
758 static void ahci_start_engine(struct ata_port *ap)
760 void __iomem *port_mmio = ahci_port_base(ap);
764 tmp = readl(port_mmio + PORT_CMD);
765 tmp |= PORT_CMD_START;
766 writel(tmp, port_mmio + PORT_CMD);
767 readl(port_mmio + PORT_CMD); /* flush */
770 static int ahci_stop_engine(struct ata_port *ap)
772 void __iomem *port_mmio = ahci_port_base(ap);
775 tmp = readl(port_mmio + PORT_CMD);
777 /* check if the HBA is idle */
778 if ((tmp & (PORT_CMD_START | PORT_CMD_LIST_ON)) == 0)
781 /* setting HBA to idle */
782 tmp &= ~PORT_CMD_START;
783 writel(tmp, port_mmio + PORT_CMD);
785 /* wait for engine to stop. This could be as long as 500 msec */
786 tmp = ata_wait_register(port_mmio + PORT_CMD,
787 PORT_CMD_LIST_ON, PORT_CMD_LIST_ON, 1, 500);
788 if (tmp & PORT_CMD_LIST_ON)
794 static void ahci_start_fis_rx(struct ata_port *ap)
796 void __iomem *port_mmio = ahci_port_base(ap);
797 struct ahci_host_priv *hpriv = ap->host->private_data;
798 struct ahci_port_priv *pp = ap->private_data;
801 /* set FIS registers */
802 if (hpriv->cap & HOST_CAP_64)
803 writel((pp->cmd_slot_dma >> 16) >> 16,
804 port_mmio + PORT_LST_ADDR_HI);
805 writel(pp->cmd_slot_dma & 0xffffffff, port_mmio + PORT_LST_ADDR);
807 if (hpriv->cap & HOST_CAP_64)
808 writel((pp->rx_fis_dma >> 16) >> 16,
809 port_mmio + PORT_FIS_ADDR_HI);
810 writel(pp->rx_fis_dma & 0xffffffff, port_mmio + PORT_FIS_ADDR);
812 /* enable FIS reception */
813 tmp = readl(port_mmio + PORT_CMD);
814 tmp |= PORT_CMD_FIS_RX;
815 writel(tmp, port_mmio + PORT_CMD);
818 readl(port_mmio + PORT_CMD);
821 static int ahci_stop_fis_rx(struct ata_port *ap)
823 void __iomem *port_mmio = ahci_port_base(ap);
826 /* disable FIS reception */
827 tmp = readl(port_mmio + PORT_CMD);
828 tmp &= ~PORT_CMD_FIS_RX;
829 writel(tmp, port_mmio + PORT_CMD);
831 /* wait for completion, spec says 500ms, give it 1000 */
832 tmp = ata_wait_register(port_mmio + PORT_CMD, PORT_CMD_FIS_ON,
833 PORT_CMD_FIS_ON, 10, 1000);
834 if (tmp & PORT_CMD_FIS_ON)
840 static void ahci_power_up(struct ata_port *ap)
842 struct ahci_host_priv *hpriv = ap->host->private_data;
843 void __iomem *port_mmio = ahci_port_base(ap);
846 cmd = readl(port_mmio + PORT_CMD) & ~PORT_CMD_ICC_MASK;
849 if (hpriv->cap & HOST_CAP_SSS) {
850 cmd |= PORT_CMD_SPIN_UP;
851 writel(cmd, port_mmio + PORT_CMD);
855 writel(cmd | PORT_CMD_ICC_ACTIVE, port_mmio + PORT_CMD);
858 static void ahci_disable_alpm(struct ata_port *ap)
860 struct ahci_host_priv *hpriv = ap->host->private_data;
861 void __iomem *port_mmio = ahci_port_base(ap);
863 struct ahci_port_priv *pp = ap->private_data;
865 /* IPM bits should be disabled by libata-core */
866 /* get the existing command bits */
867 cmd = readl(port_mmio + PORT_CMD);
869 /* disable ALPM and ASP */
870 cmd &= ~PORT_CMD_ASP;
871 cmd &= ~PORT_CMD_ALPE;
873 /* force the interface back to active */
874 cmd |= PORT_CMD_ICC_ACTIVE;
876 /* write out new cmd value */
877 writel(cmd, port_mmio + PORT_CMD);
878 cmd = readl(port_mmio + PORT_CMD);
880 /* wait 10ms to be sure we've come out of any low power state */
883 /* clear out any PhyRdy stuff from interrupt status */
884 writel(PORT_IRQ_PHYRDY, port_mmio + PORT_IRQ_STAT);
886 /* go ahead and clean out PhyRdy Change from Serror too */
887 ahci_scr_write(ap, SCR_ERROR, ((1 << 16) | (1 << 18)));
890 * Clear flag to indicate that we should ignore all PhyRdy
893 hpriv->flags &= ~AHCI_HFLAG_NO_HOTPLUG;
896 * Enable interrupts on Phy Ready.
898 pp->intr_mask |= PORT_IRQ_PHYRDY;
899 writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
902 * don't change the link pm policy - we can be called
903 * just to turn of link pm temporarily
907 static int ahci_enable_alpm(struct ata_port *ap,
910 struct ahci_host_priv *hpriv = ap->host->private_data;
911 void __iomem *port_mmio = ahci_port_base(ap);
913 struct ahci_port_priv *pp = ap->private_data;
916 /* Make sure the host is capable of link power management */
917 if (!(hpriv->cap & HOST_CAP_ALPM))
921 case MAX_PERFORMANCE:
924 * if we came here with NOT_AVAILABLE,
925 * it just means this is the first time we
926 * have tried to enable - default to max performance,
927 * and let the user go to lower power modes on request.
929 ahci_disable_alpm(ap);
932 /* configure HBA to enter SLUMBER */
936 /* configure HBA to enter PARTIAL */
944 * Disable interrupts on Phy Ready. This keeps us from
945 * getting woken up due to spurious phy ready interrupts
946 * TBD - Hot plug should be done via polling now, is
947 * that even supported?
949 pp->intr_mask &= ~PORT_IRQ_PHYRDY;
950 writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
953 * Set a flag to indicate that we should ignore all PhyRdy
954 * state changes since these can happen now whenever we
957 hpriv->flags |= AHCI_HFLAG_NO_HOTPLUG;
959 /* get the existing command bits */
960 cmd = readl(port_mmio + PORT_CMD);
963 * Set ASP based on Policy
968 * Setting this bit will instruct the HBA to aggressively
969 * enter a lower power link state when it's appropriate and
970 * based on the value set above for ASP
972 cmd |= PORT_CMD_ALPE;
974 /* write out new cmd value */
975 writel(cmd, port_mmio + PORT_CMD);
976 cmd = readl(port_mmio + PORT_CMD);
978 /* IPM bits should be set by libata-core */
983 static void ahci_power_down(struct ata_port *ap)
985 struct ahci_host_priv *hpriv = ap->host->private_data;
986 void __iomem *port_mmio = ahci_port_base(ap);
989 if (!(hpriv->cap & HOST_CAP_SSS))
992 /* put device into listen mode, first set PxSCTL.DET to 0 */
993 scontrol = readl(port_mmio + PORT_SCR_CTL);
995 writel(scontrol, port_mmio + PORT_SCR_CTL);
997 /* then set PxCMD.SUD to 0 */
998 cmd = readl(port_mmio + PORT_CMD) & ~PORT_CMD_ICC_MASK;
999 cmd &= ~PORT_CMD_SPIN_UP;
1000 writel(cmd, port_mmio + PORT_CMD);
1004 static void ahci_start_port(struct ata_port *ap)
1006 /* enable FIS reception */
1007 ahci_start_fis_rx(ap);
1010 ahci_start_engine(ap);
1013 static int ahci_deinit_port(struct ata_port *ap, const char **emsg)
1018 rc = ahci_stop_engine(ap);
1020 *emsg = "failed to stop engine";
1024 /* disable FIS reception */
1025 rc = ahci_stop_fis_rx(ap);
1027 *emsg = "failed stop FIS RX";
1034 static int ahci_reset_controller(struct ata_host *host)
1036 struct pci_dev *pdev = to_pci_dev(host->dev);
1037 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
1040 /* we must be in AHCI mode, before using anything
1041 * AHCI-specific, such as HOST_RESET.
1043 tmp = readl(mmio + HOST_CTL);
1044 if (!(tmp & HOST_AHCI_EN)) {
1045 tmp |= HOST_AHCI_EN;
1046 writel(tmp, mmio + HOST_CTL);
1049 /* global controller reset */
1050 if ((tmp & HOST_RESET) == 0) {
1051 writel(tmp | HOST_RESET, mmio + HOST_CTL);
1052 readl(mmio + HOST_CTL); /* flush */
1055 /* reset must complete within 1 second, or
1056 * the hardware should be considered fried.
1060 tmp = readl(mmio + HOST_CTL);
1061 if (tmp & HOST_RESET) {
1062 dev_printk(KERN_ERR, host->dev,
1063 "controller reset failed (0x%x)\n", tmp);
1067 /* turn on AHCI mode */
1068 writel(HOST_AHCI_EN, mmio + HOST_CTL);
1069 (void) readl(mmio + HOST_CTL); /* flush */
1071 /* some registers might be cleared on reset. restore initial values */
1072 ahci_restore_initial_config(host);
1074 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
1078 pci_read_config_word(pdev, 0x92, &tmp16);
1080 pci_write_config_word(pdev, 0x92, tmp16);
1086 static void ahci_port_init(struct pci_dev *pdev, struct ata_port *ap,
1087 int port_no, void __iomem *mmio,
1088 void __iomem *port_mmio)
1090 const char *emsg = NULL;
1094 /* make sure port is not active */
1095 rc = ahci_deinit_port(ap, &emsg);
1097 dev_printk(KERN_WARNING, &pdev->dev,
1098 "%s (%d)\n", emsg, rc);
1101 tmp = readl(port_mmio + PORT_SCR_ERR);
1102 VPRINTK("PORT_SCR_ERR 0x%x\n", tmp);
1103 writel(tmp, port_mmio + PORT_SCR_ERR);
1105 /* clear port IRQ */
1106 tmp = readl(port_mmio + PORT_IRQ_STAT);
1107 VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp);
1109 writel(tmp, port_mmio + PORT_IRQ_STAT);
1111 writel(1 << port_no, mmio + HOST_IRQ_STAT);
1114 static void ahci_init_controller(struct ata_host *host)
1116 struct ahci_host_priv *hpriv = host->private_data;
1117 struct pci_dev *pdev = to_pci_dev(host->dev);
1118 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
1120 void __iomem *port_mmio;
1123 if (hpriv->flags & AHCI_HFLAG_MV_PATA) {
1124 port_mmio = __ahci_port_base(host, 4);
1126 writel(0, port_mmio + PORT_IRQ_MASK);
1128 /* clear port IRQ */
1129 tmp = readl(port_mmio + PORT_IRQ_STAT);
1130 VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp);
1132 writel(tmp, port_mmio + PORT_IRQ_STAT);
1135 for (i = 0; i < host->n_ports; i++) {
1136 struct ata_port *ap = host->ports[i];
1138 port_mmio = ahci_port_base(ap);
1139 if (ata_port_is_dummy(ap))
1142 ahci_port_init(pdev, ap, i, mmio, port_mmio);
1145 tmp = readl(mmio + HOST_CTL);
1146 VPRINTK("HOST_CTL 0x%x\n", tmp);
1147 writel(tmp | HOST_IRQ_EN, mmio + HOST_CTL);
1148 tmp = readl(mmio + HOST_CTL);
1149 VPRINTK("HOST_CTL 0x%x\n", tmp);
1152 static unsigned int ahci_dev_classify(struct ata_port *ap)
1154 void __iomem *port_mmio = ahci_port_base(ap);
1155 struct ata_taskfile tf;
1158 tmp = readl(port_mmio + PORT_SIG);
1159 tf.lbah = (tmp >> 24) & 0xff;
1160 tf.lbam = (tmp >> 16) & 0xff;
1161 tf.lbal = (tmp >> 8) & 0xff;
1162 tf.nsect = (tmp) & 0xff;
1164 return ata_dev_classify(&tf);
1167 static void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag,
1170 dma_addr_t cmd_tbl_dma;
1172 cmd_tbl_dma = pp->cmd_tbl_dma + tag * AHCI_CMD_TBL_SZ;
1174 pp->cmd_slot[tag].opts = cpu_to_le32(opts);
1175 pp->cmd_slot[tag].status = 0;
1176 pp->cmd_slot[tag].tbl_addr = cpu_to_le32(cmd_tbl_dma & 0xffffffff);
1177 pp->cmd_slot[tag].tbl_addr_hi = cpu_to_le32((cmd_tbl_dma >> 16) >> 16);
1180 static int ahci_kick_engine(struct ata_port *ap, int force_restart)
1182 void __iomem *port_mmio = ap->ioaddr.cmd_addr;
1183 struct ahci_host_priv *hpriv = ap->host->private_data;
1187 /* do we need to kick the port? */
1188 busy = ahci_check_status(ap) & (ATA_BUSY | ATA_DRQ);
1189 if (!busy && !force_restart)
1193 rc = ahci_stop_engine(ap);
1197 /* need to do CLO? */
1203 if (!(hpriv->cap & HOST_CAP_CLO)) {
1209 tmp = readl(port_mmio + PORT_CMD);
1210 tmp |= PORT_CMD_CLO;
1211 writel(tmp, port_mmio + PORT_CMD);
1214 tmp = ata_wait_register(port_mmio + PORT_CMD,
1215 PORT_CMD_CLO, PORT_CMD_CLO, 1, 500);
1216 if (tmp & PORT_CMD_CLO)
1219 /* restart engine */
1221 ahci_start_engine(ap);
1225 static int ahci_exec_polled_cmd(struct ata_port *ap, int pmp,
1226 struct ata_taskfile *tf, int is_cmd, u16 flags,
1227 unsigned long timeout_msec)
1229 const u32 cmd_fis_len = 5; /* five dwords */
1230 struct ahci_port_priv *pp = ap->private_data;
1231 void __iomem *port_mmio = ahci_port_base(ap);
1232 u8 *fis = pp->cmd_tbl;
1235 /* prep the command */
1236 ata_tf_to_fis(tf, pmp, is_cmd, fis);
1237 ahci_fill_cmd_slot(pp, 0, cmd_fis_len | flags | (pmp << 12));
1240 writel(1, port_mmio + PORT_CMD_ISSUE);
1243 tmp = ata_wait_register(port_mmio + PORT_CMD_ISSUE, 0x1, 0x1,
1246 ahci_kick_engine(ap, 1);
1250 readl(port_mmio + PORT_CMD_ISSUE); /* flush */
1255 static int ahci_do_softreset(struct ata_link *link, unsigned int *class,
1256 int pmp, unsigned long deadline)
1258 struct ata_port *ap = link->ap;
1259 const char *reason = NULL;
1260 unsigned long now, msecs;
1261 struct ata_taskfile tf;
1266 if (ata_link_offline(link)) {
1267 DPRINTK("PHY reports no device\n");
1268 *class = ATA_DEV_NONE;
1272 /* prepare for SRST (AHCI-1.1 10.4.1) */
1273 rc = ahci_kick_engine(ap, 1);
1275 ata_link_printk(link, KERN_WARNING,
1276 "failed to reset engine (errno=%d)", rc);
1278 ata_tf_init(link->device, &tf);
1280 /* issue the first D2H Register FIS */
1283 if (time_after(now, deadline))
1284 msecs = jiffies_to_msecs(deadline - now);
1287 if (ahci_exec_polled_cmd(ap, pmp, &tf, 0,
1288 AHCI_CMD_RESET | AHCI_CMD_CLR_BUSY, msecs)) {
1290 reason = "1st FIS failed";
1294 /* spec says at least 5us, but be generous and sleep for 1ms */
1297 /* issue the second D2H Register FIS */
1298 tf.ctl &= ~ATA_SRST;
1299 ahci_exec_polled_cmd(ap, pmp, &tf, 0, 0, 0);
1301 /* wait a while before checking status */
1302 ata_wait_after_reset(ap, deadline);
1304 rc = ata_wait_ready(ap, deadline);
1305 /* link occupied, -ENODEV too is an error */
1307 reason = "device not ready";
1310 *class = ahci_dev_classify(ap);
1312 DPRINTK("EXIT, class=%u\n", *class);
1316 ata_link_printk(link, KERN_ERR, "softreset failed (%s)\n", reason);
1320 static int ahci_softreset(struct ata_link *link, unsigned int *class,
1321 unsigned long deadline)
1325 if (link->ap->flags & ATA_FLAG_PMP)
1326 pmp = SATA_PMP_CTRL_PORT;
1328 return ahci_do_softreset(link, class, pmp, deadline);
1331 static int ahci_hardreset(struct ata_link *link, unsigned int *class,
1332 unsigned long deadline)
1334 struct ata_port *ap = link->ap;
1335 struct ahci_port_priv *pp = ap->private_data;
1336 u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
1337 struct ata_taskfile tf;
1342 ahci_stop_engine(ap);
1344 /* clear D2H reception area to properly wait for D2H FIS */
1345 ata_tf_init(link->device, &tf);
1347 ata_tf_to_fis(&tf, 0, 0, d2h_fis);
1349 rc = sata_std_hardreset(link, class, deadline);
1351 ahci_start_engine(ap);
1353 if (rc == 0 && ata_link_online(link))
1354 *class = ahci_dev_classify(ap);
1355 if (rc != -EAGAIN && *class == ATA_DEV_UNKNOWN)
1356 *class = ATA_DEV_NONE;
1358 DPRINTK("EXIT, rc=%d, class=%u\n", rc, *class);
1362 static int ahci_vt8251_hardreset(struct ata_link *link, unsigned int *class,
1363 unsigned long deadline)
1365 struct ata_port *ap = link->ap;
1371 ahci_stop_engine(ap);
1373 rc = sata_link_hardreset(link, sata_ehc_deb_timing(&link->eh_context),
1376 /* vt8251 needs SError cleared for the port to operate */
1377 ahci_scr_read(ap, SCR_ERROR, &serror);
1378 ahci_scr_write(ap, SCR_ERROR, serror);
1380 ahci_start_engine(ap);
1382 DPRINTK("EXIT, rc=%d, class=%u\n", rc, *class);
1384 /* vt8251 doesn't clear BSY on signature FIS reception,
1385 * request follow-up softreset.
1387 return rc ?: -EAGAIN;
1390 static int ahci_p5wdh_hardreset(struct ata_link *link, unsigned int *class,
1391 unsigned long deadline)
1393 struct ata_port *ap = link->ap;
1394 struct ahci_port_priv *pp = ap->private_data;
1395 u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
1396 struct ata_taskfile tf;
1399 ahci_stop_engine(ap);
1401 /* clear D2H reception area to properly wait for D2H FIS */
1402 ata_tf_init(link->device, &tf);
1404 ata_tf_to_fis(&tf, 0, 0, d2h_fis);
1406 rc = sata_link_hardreset(link, sata_ehc_deb_timing(&link->eh_context),
1409 ahci_start_engine(ap);
1411 if (rc || ata_link_offline(link))
1414 /* spec mandates ">= 2ms" before checking status */
1417 /* The pseudo configuration device on SIMG4726 attached to
1418 * ASUS P5W-DH Deluxe doesn't send signature FIS after
1419 * hardreset if no device is attached to the first downstream
1420 * port && the pseudo device locks up on SRST w/ PMP==0. To
1421 * work around this, wait for !BSY only briefly. If BSY isn't
1422 * cleared, perform CLO and proceed to IDENTIFY (achieved by
1423 * ATA_LFLAG_NO_SRST and ATA_LFLAG_ASSUME_ATA).
1425 * Wait for two seconds. Devices attached to downstream port
1426 * which can't process the following IDENTIFY after this will
1427 * have to be reset again. For most cases, this should
1428 * suffice while making probing snappish enough.
1430 rc = ata_wait_ready(ap, jiffies + 2 * HZ);
1432 ahci_kick_engine(ap, 0);
1437 static void ahci_postreset(struct ata_link *link, unsigned int *class)
1439 struct ata_port *ap = link->ap;
1440 void __iomem *port_mmio = ahci_port_base(ap);
1443 ata_std_postreset(link, class);
1445 /* Make sure port's ATAPI bit is set appropriately */
1446 new_tmp = tmp = readl(port_mmio + PORT_CMD);
1447 if (*class == ATA_DEV_ATAPI)
1448 new_tmp |= PORT_CMD_ATAPI;
1450 new_tmp &= ~PORT_CMD_ATAPI;
1451 if (new_tmp != tmp) {
1452 writel(new_tmp, port_mmio + PORT_CMD);
1453 readl(port_mmio + PORT_CMD); /* flush */
1457 static int ahci_pmp_softreset(struct ata_link *link, unsigned int *class,
1458 unsigned long deadline)
1460 return ahci_do_softreset(link, class, link->pmp, deadline);
1463 static u8 ahci_check_status(struct ata_port *ap)
1465 void __iomem *mmio = ap->ioaddr.cmd_addr;
1467 return readl(mmio + PORT_TFDATA) & 0xFF;
1470 static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
1472 struct ahci_port_priv *pp = ap->private_data;
1473 u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
1475 ata_tf_from_fis(d2h_fis, tf);
1478 static unsigned int ahci_fill_sg(struct ata_queued_cmd *qc, void *cmd_tbl)
1480 struct scatterlist *sg;
1481 struct ahci_sg *ahci_sg;
1482 unsigned int n_sg = 0;
1487 * Next, the S/G list.
1489 ahci_sg = cmd_tbl + AHCI_CMD_TBL_HDR_SZ;
1490 ata_for_each_sg(sg, qc) {
1491 dma_addr_t addr = sg_dma_address(sg);
1492 u32 sg_len = sg_dma_len(sg);
1494 ahci_sg->addr = cpu_to_le32(addr & 0xffffffff);
1495 ahci_sg->addr_hi = cpu_to_le32((addr >> 16) >> 16);
1496 ahci_sg->flags_size = cpu_to_le32(sg_len - 1);
1505 static void ahci_qc_prep(struct ata_queued_cmd *qc)
1507 struct ata_port *ap = qc->ap;
1508 struct ahci_port_priv *pp = ap->private_data;
1509 int is_atapi = is_atapi_taskfile(&qc->tf);
1512 const u32 cmd_fis_len = 5; /* five dwords */
1513 unsigned int n_elem;
1516 * Fill in command table information. First, the header,
1517 * a SATA Register - Host to Device command FIS.
1519 cmd_tbl = pp->cmd_tbl + qc->tag * AHCI_CMD_TBL_SZ;
1521 ata_tf_to_fis(&qc->tf, qc->dev->link->pmp, 1, cmd_tbl);
1523 memset(cmd_tbl + AHCI_CMD_TBL_CDB, 0, 32);
1524 memcpy(cmd_tbl + AHCI_CMD_TBL_CDB, qc->cdb, qc->dev->cdb_len);
1528 if (qc->flags & ATA_QCFLAG_DMAMAP)
1529 n_elem = ahci_fill_sg(qc, cmd_tbl);
1532 * Fill in command slot information.
1534 opts = cmd_fis_len | n_elem << 16 | (qc->dev->link->pmp << 12);
1535 if (qc->tf.flags & ATA_TFLAG_WRITE)
1536 opts |= AHCI_CMD_WRITE;
1538 opts |= AHCI_CMD_ATAPI | AHCI_CMD_PREFETCH;
1540 ahci_fill_cmd_slot(pp, qc->tag, opts);
1543 static void ahci_error_intr(struct ata_port *ap, u32 irq_stat)
1545 struct ahci_host_priv *hpriv = ap->host->private_data;
1546 struct ahci_port_priv *pp = ap->private_data;
1547 struct ata_eh_info *host_ehi = &ap->link.eh_info;
1548 struct ata_link *link = NULL;
1549 struct ata_queued_cmd *active_qc;
1550 struct ata_eh_info *active_ehi;
1553 /* determine active link */
1554 ata_port_for_each_link(link, ap)
1555 if (ata_link_active(link))
1560 active_qc = ata_qc_from_tag(ap, link->active_tag);
1561 active_ehi = &link->eh_info;
1563 /* record irq stat */
1564 ata_ehi_clear_desc(host_ehi);
1565 ata_ehi_push_desc(host_ehi, "irq_stat 0x%08x", irq_stat);
1567 /* AHCI needs SError cleared; otherwise, it might lock up */
1568 ahci_scr_read(ap, SCR_ERROR, &serror);
1569 ahci_scr_write(ap, SCR_ERROR, serror);
1570 host_ehi->serror |= serror;
1572 /* some controllers set IRQ_IF_ERR on device errors, ignore it */
1573 if (hpriv->flags & AHCI_HFLAG_IGN_IRQ_IF_ERR)
1574 irq_stat &= ~PORT_IRQ_IF_ERR;
1576 if (irq_stat & PORT_IRQ_TF_ERR) {
1577 /* If qc is active, charge it; otherwise, the active
1578 * link. There's no active qc on NCQ errors. It will
1579 * be determined by EH by reading log page 10h.
1582 active_qc->err_mask |= AC_ERR_DEV;
1584 active_ehi->err_mask |= AC_ERR_DEV;
1586 if (hpriv->flags & AHCI_HFLAG_IGN_SERR_INTERNAL)
1587 host_ehi->serror &= ~SERR_INTERNAL;
1590 if (irq_stat & PORT_IRQ_UNK_FIS) {
1591 u32 *unk = (u32 *)(pp->rx_fis + RX_FIS_UNK);
1593 active_ehi->err_mask |= AC_ERR_HSM;
1594 active_ehi->action |= ATA_EH_SOFTRESET;
1595 ata_ehi_push_desc(active_ehi,
1596 "unknown FIS %08x %08x %08x %08x" ,
1597 unk[0], unk[1], unk[2], unk[3]);
1600 if (ap->nr_pmp_links && (irq_stat & PORT_IRQ_BAD_PMP)) {
1601 active_ehi->err_mask |= AC_ERR_HSM;
1602 active_ehi->action |= ATA_EH_SOFTRESET;
1603 ata_ehi_push_desc(active_ehi, "incorrect PMP");
1606 if (irq_stat & (PORT_IRQ_HBUS_ERR | PORT_IRQ_HBUS_DATA_ERR)) {
1607 host_ehi->err_mask |= AC_ERR_HOST_BUS;
1608 host_ehi->action |= ATA_EH_SOFTRESET;
1609 ata_ehi_push_desc(host_ehi, "host bus error");
1612 if (irq_stat & PORT_IRQ_IF_ERR) {
1613 host_ehi->err_mask |= AC_ERR_ATA_BUS;
1614 host_ehi->action |= ATA_EH_SOFTRESET;
1615 ata_ehi_push_desc(host_ehi, "interface fatal error");
1618 if (irq_stat & (PORT_IRQ_CONNECT | PORT_IRQ_PHYRDY)) {
1619 ata_ehi_hotplugged(host_ehi);
1620 ata_ehi_push_desc(host_ehi, "%s",
1621 irq_stat & PORT_IRQ_CONNECT ?
1622 "connection status changed" : "PHY RDY changed");
1625 /* okay, let's hand over to EH */
1627 if (irq_stat & PORT_IRQ_FREEZE)
1628 ata_port_freeze(ap);
1633 static void ahci_port_intr(struct ata_port *ap)
1635 void __iomem *port_mmio = ap->ioaddr.cmd_addr;
1636 struct ata_eh_info *ehi = &ap->link.eh_info;
1637 struct ahci_port_priv *pp = ap->private_data;
1638 struct ahci_host_priv *hpriv = ap->host->private_data;
1639 int resetting = !!(ap->pflags & ATA_PFLAG_RESETTING);
1640 u32 status, qc_active;
1641 int rc, known_irq = 0;
1643 status = readl(port_mmio + PORT_IRQ_STAT);
1644 writel(status, port_mmio + PORT_IRQ_STAT);
1646 /* ignore BAD_PMP while resetting */
1647 if (unlikely(resetting))
1648 status &= ~PORT_IRQ_BAD_PMP;
1650 /* If we are getting PhyRdy, this is
1651 * just a power state change, we should
1652 * clear out this, plus the PhyRdy/Comm
1653 * Wake bits from Serror
1655 if ((hpriv->flags & AHCI_HFLAG_NO_HOTPLUG) &&
1656 (status & PORT_IRQ_PHYRDY)) {
1657 status &= ~PORT_IRQ_PHYRDY;
1658 ahci_scr_write(ap, SCR_ERROR, ((1 << 16) | (1 << 18)));
1661 if (unlikely(status & PORT_IRQ_ERROR)) {
1662 ahci_error_intr(ap, status);
1666 if (status & PORT_IRQ_SDB_FIS) {
1667 /* If SNotification is available, leave notification
1668 * handling to sata_async_notification(). If not,
1669 * emulate it by snooping SDB FIS RX area.
1671 * Snooping FIS RX area is probably cheaper than
1672 * poking SNotification but some constrollers which
1673 * implement SNotification, ICH9 for example, don't
1674 * store AN SDB FIS into receive area.
1676 if (hpriv->cap & HOST_CAP_SNTF)
1677 sata_async_notification(ap);
1679 /* If the 'N' bit in word 0 of the FIS is set,
1680 * we just received asynchronous notification.
1681 * Tell libata about it.
1683 const __le32 *f = pp->rx_fis + RX_FIS_SDB;
1684 u32 f0 = le32_to_cpu(f[0]);
1687 sata_async_notification(ap);
1691 /* pp->active_link is valid iff any command is in flight */
1692 if (ap->qc_active && pp->active_link->sactive)
1693 qc_active = readl(port_mmio + PORT_SCR_ACT);
1695 qc_active = readl(port_mmio + PORT_CMD_ISSUE);
1697 rc = ata_qc_complete_multiple(ap, qc_active, NULL);
1699 /* If resetting, spurious or invalid completions are expected,
1700 * return unconditionally.
1708 ehi->err_mask |= AC_ERR_HSM;
1709 ehi->action |= ATA_EH_SOFTRESET;
1710 ata_port_freeze(ap);
1714 /* hmmm... a spurious interrupt */
1716 /* if !NCQ, ignore. No modern ATA device has broken HSM
1717 * implementation for non-NCQ commands.
1719 if (!ap->link.sactive)
1722 if (status & PORT_IRQ_D2H_REG_FIS) {
1723 if (!pp->ncq_saw_d2h)
1724 ata_port_printk(ap, KERN_INFO,
1725 "D2H reg with I during NCQ, "
1726 "this message won't be printed again\n");
1727 pp->ncq_saw_d2h = 1;
1731 if (status & PORT_IRQ_DMAS_FIS) {
1732 if (!pp->ncq_saw_dmas)
1733 ata_port_printk(ap, KERN_INFO,
1734 "DMAS FIS during NCQ, "
1735 "this message won't be printed again\n");
1736 pp->ncq_saw_dmas = 1;
1740 if (status & PORT_IRQ_SDB_FIS) {
1741 const __le32 *f = pp->rx_fis + RX_FIS_SDB;
1743 if (le32_to_cpu(f[1])) {
1744 /* SDB FIS containing spurious completions
1745 * might be dangerous, whine and fail commands
1746 * with HSM violation. EH will turn off NCQ
1747 * after several such failures.
1749 ata_ehi_push_desc(ehi,
1750 "spurious completions during NCQ "
1751 "issue=0x%x SAct=0x%x FIS=%08x:%08x",
1752 readl(port_mmio + PORT_CMD_ISSUE),
1753 readl(port_mmio + PORT_SCR_ACT),
1754 le32_to_cpu(f[0]), le32_to_cpu(f[1]));
1755 ehi->err_mask |= AC_ERR_HSM;
1756 ehi->action |= ATA_EH_SOFTRESET;
1757 ata_port_freeze(ap);
1759 if (!pp->ncq_saw_sdb)
1760 ata_port_printk(ap, KERN_INFO,
1761 "spurious SDB FIS %08x:%08x during NCQ, "
1762 "this message won't be printed again\n",
1763 le32_to_cpu(f[0]), le32_to_cpu(f[1]));
1764 pp->ncq_saw_sdb = 1;
1770 ata_port_printk(ap, KERN_INFO, "spurious interrupt "
1771 "(irq_stat 0x%x active_tag 0x%x sactive 0x%x)\n",
1772 status, ap->link.active_tag, ap->link.sactive);
1775 static void ahci_irq_clear(struct ata_port *ap)
1780 static irqreturn_t ahci_interrupt(int irq, void *dev_instance)
1782 struct ata_host *host = dev_instance;
1783 struct ahci_host_priv *hpriv;
1784 unsigned int i, handled = 0;
1786 u32 irq_stat, irq_ack = 0;
1790 hpriv = host->private_data;
1791 mmio = host->iomap[AHCI_PCI_BAR];
1793 /* sigh. 0xffffffff is a valid return from h/w */
1794 irq_stat = readl(mmio + HOST_IRQ_STAT);
1795 irq_stat &= hpriv->port_map;
1799 spin_lock(&host->lock);
1801 for (i = 0; i < host->n_ports; i++) {
1802 struct ata_port *ap;
1804 if (!(irq_stat & (1 << i)))
1807 ap = host->ports[i];
1810 VPRINTK("port %u\n", i);
1812 VPRINTK("port %u (no irq)\n", i);
1813 if (ata_ratelimit())
1814 dev_printk(KERN_WARNING, host->dev,
1815 "interrupt on disabled port %u\n", i);
1818 irq_ack |= (1 << i);
1822 writel(irq_ack, mmio + HOST_IRQ_STAT);
1826 spin_unlock(&host->lock);
1830 return IRQ_RETVAL(handled);
1833 static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc)
1835 struct ata_port *ap = qc->ap;
1836 void __iomem *port_mmio = ahci_port_base(ap);
1837 struct ahci_port_priv *pp = ap->private_data;
1839 /* Keep track of the currently active link. It will be used
1840 * in completion path to determine whether NCQ phase is in
1843 pp->active_link = qc->dev->link;
1845 if (qc->tf.protocol == ATA_PROT_NCQ)
1846 writel(1 << qc->tag, port_mmio + PORT_SCR_ACT);
1847 writel(1 << qc->tag, port_mmio + PORT_CMD_ISSUE);
1848 readl(port_mmio + PORT_CMD_ISSUE); /* flush */
1853 static void ahci_freeze(struct ata_port *ap)
1855 void __iomem *port_mmio = ahci_port_base(ap);
1858 writel(0, port_mmio + PORT_IRQ_MASK);
1861 static void ahci_thaw(struct ata_port *ap)
1863 void __iomem *mmio = ap->host->iomap[AHCI_PCI_BAR];
1864 void __iomem *port_mmio = ahci_port_base(ap);
1866 struct ahci_port_priv *pp = ap->private_data;
1869 tmp = readl(port_mmio + PORT_IRQ_STAT);
1870 writel(tmp, port_mmio + PORT_IRQ_STAT);
1871 writel(1 << ap->port_no, mmio + HOST_IRQ_STAT);
1873 /* turn IRQ back on */
1874 writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
1877 static void ahci_error_handler(struct ata_port *ap)
1879 if (!(ap->pflags & ATA_PFLAG_FROZEN)) {
1880 /* restart engine */
1881 ahci_stop_engine(ap);
1882 ahci_start_engine(ap);
1885 /* perform recovery */
1886 sata_pmp_do_eh(ap, ata_std_prereset, ahci_softreset,
1887 ahci_hardreset, ahci_postreset,
1888 sata_pmp_std_prereset, ahci_pmp_softreset,
1889 sata_pmp_std_hardreset, sata_pmp_std_postreset);
1892 static void ahci_vt8251_error_handler(struct ata_port *ap)
1894 if (!(ap->pflags & ATA_PFLAG_FROZEN)) {
1895 /* restart engine */
1896 ahci_stop_engine(ap);
1897 ahci_start_engine(ap);
1900 /* perform recovery */
1901 ata_do_eh(ap, ata_std_prereset, ahci_softreset, ahci_vt8251_hardreset,
1905 static void ahci_p5wdh_error_handler(struct ata_port *ap)
1907 if (!(ap->pflags & ATA_PFLAG_FROZEN)) {
1908 /* restart engine */
1909 ahci_stop_engine(ap);
1910 ahci_start_engine(ap);
1913 /* perform recovery */
1914 ata_do_eh(ap, ata_std_prereset, ahci_softreset, ahci_p5wdh_hardreset,
1918 static void ahci_post_internal_cmd(struct ata_queued_cmd *qc)
1920 struct ata_port *ap = qc->ap;
1922 /* make DMA engine forget about the failed command */
1923 if (qc->flags & ATA_QCFLAG_FAILED)
1924 ahci_kick_engine(ap, 1);
1927 static void ahci_pmp_attach(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 void ahci_pmp_detach(struct ata_port *ap)
1943 void __iomem *port_mmio = ahci_port_base(ap);
1944 struct ahci_port_priv *pp = ap->private_data;
1947 cmd = readl(port_mmio + PORT_CMD);
1948 cmd &= ~PORT_CMD_PMP;
1949 writel(cmd, port_mmio + PORT_CMD);
1951 pp->intr_mask &= ~PORT_IRQ_BAD_PMP;
1952 writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
1955 static int ahci_port_resume(struct ata_port *ap)
1958 ahci_start_port(ap);
1960 if (ap->nr_pmp_links)
1961 ahci_pmp_attach(ap);
1963 ahci_pmp_detach(ap);
1969 static int ahci_port_suspend(struct ata_port *ap, pm_message_t mesg)
1971 const char *emsg = NULL;
1974 rc = ahci_deinit_port(ap, &emsg);
1976 ahci_power_down(ap);
1978 ata_port_printk(ap, KERN_ERR, "%s (%d)\n", emsg, rc);
1979 ahci_start_port(ap);
1985 static int ahci_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
1987 struct ata_host *host = dev_get_drvdata(&pdev->dev);
1988 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
1991 if (mesg.event == PM_EVENT_SUSPEND) {
1992 /* AHCI spec rev1.1 section 8.3.3:
1993 * Software must disable interrupts prior to requesting a
1994 * transition of the HBA to D3 state.
1996 ctl = readl(mmio + HOST_CTL);
1997 ctl &= ~HOST_IRQ_EN;
1998 writel(ctl, mmio + HOST_CTL);
1999 readl(mmio + HOST_CTL); /* flush */
2002 return ata_pci_device_suspend(pdev, mesg);
2005 static int ahci_pci_device_resume(struct pci_dev *pdev)
2007 struct ata_host *host = dev_get_drvdata(&pdev->dev);
2010 rc = ata_pci_device_do_resume(pdev);
2014 if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
2015 rc = ahci_reset_controller(host);
2019 ahci_init_controller(host);
2022 ata_host_resume(host);
2028 static int ahci_port_start(struct ata_port *ap)
2030 struct device *dev = ap->host->dev;
2031 struct ahci_port_priv *pp;
2036 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
2040 rc = ata_pad_alloc(ap, dev);
2044 mem = dmam_alloc_coherent(dev, AHCI_PORT_PRIV_DMA_SZ, &mem_dma,
2048 memset(mem, 0, AHCI_PORT_PRIV_DMA_SZ);
2051 * First item in chunk of DMA memory: 32-slot command table,
2052 * 32 bytes each in size
2055 pp->cmd_slot_dma = mem_dma;
2057 mem += AHCI_CMD_SLOT_SZ;
2058 mem_dma += AHCI_CMD_SLOT_SZ;
2061 * Second item: Received-FIS area
2064 pp->rx_fis_dma = mem_dma;
2066 mem += AHCI_RX_FIS_SZ;
2067 mem_dma += AHCI_RX_FIS_SZ;
2070 * Third item: data area for storing a single command
2071 * and its scatter-gather table
2074 pp->cmd_tbl_dma = mem_dma;
2077 * Save off initial list of interrupts to be enabled.
2078 * This could be changed later
2080 pp->intr_mask = DEF_PORT_IRQ;
2082 ap->private_data = pp;
2084 /* engage engines, captain */
2085 return ahci_port_resume(ap);
2088 static void ahci_port_stop(struct ata_port *ap)
2090 const char *emsg = NULL;
2093 /* de-initialize port */
2094 rc = ahci_deinit_port(ap, &emsg);
2096 ata_port_printk(ap, KERN_WARNING, "%s (%d)\n", emsg, rc);
2099 static int ahci_configure_dma_masks(struct pci_dev *pdev, int using_dac)
2104 !pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
2105 rc = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
2107 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
2109 dev_printk(KERN_ERR, &pdev->dev,
2110 "64-bit DMA enable failed\n");
2115 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
2117 dev_printk(KERN_ERR, &pdev->dev,
2118 "32-bit DMA enable failed\n");
2121 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
2123 dev_printk(KERN_ERR, &pdev->dev,
2124 "32-bit consistent DMA enable failed\n");
2131 static void ahci_print_info(struct ata_host *host)
2133 struct ahci_host_priv *hpriv = host->private_data;
2134 struct pci_dev *pdev = to_pci_dev(host->dev);
2135 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
2136 u32 vers, cap, impl, speed;
2137 const char *speed_s;
2141 vers = readl(mmio + HOST_VERSION);
2143 impl = hpriv->port_map;
2145 speed = (cap >> 20) & 0xf;
2148 else if (speed == 2)
2153 pci_read_config_word(pdev, 0x0a, &cc);
2154 if (cc == PCI_CLASS_STORAGE_IDE)
2156 else if (cc == PCI_CLASS_STORAGE_SATA)
2158 else if (cc == PCI_CLASS_STORAGE_RAID)
2163 dev_printk(KERN_INFO, &pdev->dev,
2164 "AHCI %02x%02x.%02x%02x "
2165 "%u slots %u ports %s Gbps 0x%x impl %s mode\n"
2168 (vers >> 24) & 0xff,
2169 (vers >> 16) & 0xff,
2173 ((cap >> 8) & 0x1f) + 1,
2179 dev_printk(KERN_INFO, &pdev->dev,
2185 cap & (1 << 31) ? "64bit " : "",
2186 cap & (1 << 30) ? "ncq " : "",
2187 cap & (1 << 29) ? "sntf " : "",
2188 cap & (1 << 28) ? "ilck " : "",
2189 cap & (1 << 27) ? "stag " : "",
2190 cap & (1 << 26) ? "pm " : "",
2191 cap & (1 << 25) ? "led " : "",
2193 cap & (1 << 24) ? "clo " : "",
2194 cap & (1 << 19) ? "nz " : "",
2195 cap & (1 << 18) ? "only " : "",
2196 cap & (1 << 17) ? "pmp " : "",
2197 cap & (1 << 15) ? "pio " : "",
2198 cap & (1 << 14) ? "slum " : "",
2199 cap & (1 << 13) ? "part " : ""
2203 /* On ASUS P5W DH Deluxe, the second port of PCI device 00:1f.2 is
2204 * hardwired to on-board SIMG 4726. The chipset is ICH8 and doesn't
2205 * support PMP and the 4726 either directly exports the device
2206 * attached to the first downstream port or acts as a hardware storage
2207 * controller and emulate a single ATA device (can be RAID 0/1 or some
2208 * other configuration).
2210 * When there's no device attached to the first downstream port of the
2211 * 4726, "Config Disk" appears, which is a pseudo ATA device to
2212 * configure the 4726. However, ATA emulation of the device is very
2213 * lame. It doesn't send signature D2H Reg FIS after the initial
2214 * hardreset, pukes on SRST w/ PMP==0 and has bunch of other issues.
2216 * The following function works around the problem by always using
2217 * hardreset on the port and not depending on receiving signature FIS
2218 * afterward. If signature FIS isn't received soon, ATA class is
2219 * assumed without follow-up softreset.
2221 static void ahci_p5wdh_workaround(struct ata_host *host)
2223 static struct dmi_system_id sysids[] = {
2225 .ident = "P5W DH Deluxe",
2227 DMI_MATCH(DMI_SYS_VENDOR,
2228 "ASUSTEK COMPUTER INC"),
2229 DMI_MATCH(DMI_PRODUCT_NAME, "P5W DH Deluxe"),
2234 struct pci_dev *pdev = to_pci_dev(host->dev);
2236 if (pdev->bus->number == 0 && pdev->devfn == PCI_DEVFN(0x1f, 2) &&
2237 dmi_check_system(sysids)) {
2238 struct ata_port *ap = host->ports[1];
2240 dev_printk(KERN_INFO, &pdev->dev, "enabling ASUS P5W DH "
2241 "Deluxe on-board SIMG4726 workaround\n");
2243 ap->ops = &ahci_p5wdh_ops;
2244 ap->link.flags |= ATA_LFLAG_NO_SRST | ATA_LFLAG_ASSUME_ATA;
2248 static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
2250 static int printed_version;
2251 struct ata_port_info pi = ahci_port_info[ent->driver_data];
2252 const struct ata_port_info *ppi[] = { &pi, NULL };
2253 struct device *dev = &pdev->dev;
2254 struct ahci_host_priv *hpriv;
2255 struct ata_host *host;
2260 WARN_ON(ATA_MAX_QUEUE > AHCI_MAX_CMDS);
2262 if (!printed_version++)
2263 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
2265 /* acquire resources */
2266 rc = pcim_enable_device(pdev);
2270 rc = pcim_iomap_regions(pdev, 1 << AHCI_PCI_BAR, DRV_NAME);
2272 pcim_pin_device(pdev);
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 host = ata_host_alloc_pinfo(&pdev->dev, ppi, fls(hpriv->port_map));
2297 host->iomap = pcim_iomap_table(pdev);
2298 host->private_data = hpriv;
2300 for (i = 0; i < host->n_ports; i++) {
2301 struct ata_port *ap = host->ports[i];
2302 void __iomem *port_mmio = ahci_port_base(ap);
2304 ata_port_pbar_desc(ap, AHCI_PCI_BAR, -1, "abar");
2305 ata_port_pbar_desc(ap, AHCI_PCI_BAR,
2306 0x100 + ap->port_no * 0x80, "port");
2308 /* set initial link pm policy */
2309 ap->pm_policy = NOT_AVAILABLE;
2311 /* standard SATA port setup */
2312 if (hpriv->port_map & (1 << i))
2313 ap->ioaddr.cmd_addr = port_mmio;
2315 /* disabled/not-implemented port */
2317 ap->ops = &ata_dummy_port_ops;
2320 /* apply workaround for ASUS P5W DH Deluxe mainboard */
2321 ahci_p5wdh_workaround(host);
2323 /* initialize adapter */
2324 rc = ahci_configure_dma_masks(pdev, hpriv->cap & HOST_CAP_64);
2328 rc = ahci_reset_controller(host);
2332 ahci_init_controller(host);
2333 ahci_print_info(host);
2335 pci_set_master(pdev);
2336 return ata_host_activate(host, pdev->irq, ahci_interrupt, IRQF_SHARED,
2340 static int __init ahci_init(void)
2342 return pci_register_driver(&ahci_pci_driver);
2345 static void __exit ahci_exit(void)
2347 pci_unregister_driver(&ahci_pci_driver);
2351 MODULE_AUTHOR("Jeff Garzik");
2352 MODULE_DESCRIPTION("AHCI SATA low-level driver");
2353 MODULE_LICENSE("GPL");
2354 MODULE_DEVICE_TABLE(pci, ahci_pci_tbl);
2355 MODULE_VERSION(DRV_VERSION);
2357 module_init(ahci_init);
2358 module_exit(ahci_exit);