2 * ahci.c - AHCI SATA support
4 * Maintained by: Jeff Garzik <jgarzik@pobox.com>
5 * Please ALWAYS copy linux-ide@vger.kernel.org
8 * Copyright 2004-2005 Red Hat, Inc.
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2, or (at your option)
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; see the file COPYING. If not, write to
23 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
26 * libata documentation is available via 'make {ps|pdf}docs',
27 * as Documentation/DocBook/libata.*
29 * AHCI hardware documentation:
30 * http://www.intel.com/technology/serialata/pdf/rev1_0.pdf
31 * http://www.intel.com/technology/serialata/pdf/rev1_1.pdf
35 #include <linux/kernel.h>
36 #include <linux/module.h>
37 #include <linux/pci.h>
38 #include <linux/init.h>
39 #include <linux/blkdev.h>
40 #include <linux/delay.h>
41 #include <linux/interrupt.h>
42 #include <linux/dma-mapping.h>
43 #include <linux/device.h>
44 #include <linux/dmi.h>
45 #include <scsi/scsi_host.h>
46 #include <scsi/scsi_cmnd.h>
47 #include <linux/libata.h>
49 #define DRV_NAME "ahci"
50 #define DRV_VERSION "3.0"
52 static int ahci_skip_host_reset;
53 module_param_named(skip_host_reset, ahci_skip_host_reset, int, 0444);
54 MODULE_PARM_DESC(skip_host_reset, "skip global host reset (0=don't skip, 1=skip)");
56 static int ahci_enable_alpm(struct ata_port *ap,
58 static void ahci_disable_alpm(struct ata_port *ap);
63 AHCI_MAX_SG = 168, /* hardware max is 64K */
64 AHCI_DMA_BOUNDARY = 0xffffffff,
67 AHCI_CMD_SLOT_SZ = AHCI_MAX_CMDS * AHCI_CMD_SZ,
69 AHCI_CMD_TBL_CDB = 0x40,
70 AHCI_CMD_TBL_HDR_SZ = 0x80,
71 AHCI_CMD_TBL_SZ = AHCI_CMD_TBL_HDR_SZ + (AHCI_MAX_SG * 16),
72 AHCI_CMD_TBL_AR_SZ = AHCI_CMD_TBL_SZ * AHCI_MAX_CMDS,
73 AHCI_PORT_PRIV_DMA_SZ = AHCI_CMD_SLOT_SZ + AHCI_CMD_TBL_AR_SZ +
75 AHCI_IRQ_ON_SG = (1 << 31),
76 AHCI_CMD_ATAPI = (1 << 5),
77 AHCI_CMD_WRITE = (1 << 6),
78 AHCI_CMD_PREFETCH = (1 << 7),
79 AHCI_CMD_RESET = (1 << 8),
80 AHCI_CMD_CLR_BUSY = (1 << 10),
82 RX_FIS_D2H_REG = 0x40, /* offset of D2H Register FIS data */
83 RX_FIS_SDB = 0x58, /* offset of SDB FIS data */
84 RX_FIS_UNK = 0x60, /* offset of Unknown FIS data */
87 board_ahci_vt8251 = 1,
88 board_ahci_ign_iferr = 2,
93 /* global controller registers */
94 HOST_CAP = 0x00, /* host capabilities */
95 HOST_CTL = 0x04, /* global host control */
96 HOST_IRQ_STAT = 0x08, /* interrupt status */
97 HOST_PORTS_IMPL = 0x0c, /* bitmap of implemented ports */
98 HOST_VERSION = 0x10, /* AHCI spec. version compliancy */
101 HOST_RESET = (1 << 0), /* reset controller; self-clear */
102 HOST_IRQ_EN = (1 << 1), /* global IRQ enable */
103 HOST_AHCI_EN = (1 << 31), /* AHCI enabled */
106 HOST_CAP_SSC = (1 << 14), /* Slumber capable */
107 HOST_CAP_PMP = (1 << 17), /* Port Multiplier support */
108 HOST_CAP_CLO = (1 << 24), /* Command List Override support */
109 HOST_CAP_ALPM = (1 << 26), /* Aggressive Link PM support */
110 HOST_CAP_SSS = (1 << 27), /* Staggered Spin-up */
111 HOST_CAP_SNTF = (1 << 29), /* SNotification register */
112 HOST_CAP_NCQ = (1 << 30), /* Native Command Queueing */
113 HOST_CAP_64 = (1 << 31), /* PCI DAC (64-bit DMA) support */
115 /* registers for each SATA port */
116 PORT_LST_ADDR = 0x00, /* command list DMA addr */
117 PORT_LST_ADDR_HI = 0x04, /* command list DMA addr hi */
118 PORT_FIS_ADDR = 0x08, /* FIS rx buf addr */
119 PORT_FIS_ADDR_HI = 0x0c, /* FIS rx buf addr hi */
120 PORT_IRQ_STAT = 0x10, /* interrupt status */
121 PORT_IRQ_MASK = 0x14, /* interrupt enable/disable mask */
122 PORT_CMD = 0x18, /* port command */
123 PORT_TFDATA = 0x20, /* taskfile data */
124 PORT_SIG = 0x24, /* device TF signature */
125 PORT_CMD_ISSUE = 0x38, /* command issue */
126 PORT_SCR_STAT = 0x28, /* SATA phy register: SStatus */
127 PORT_SCR_CTL = 0x2c, /* SATA phy register: SControl */
128 PORT_SCR_ERR = 0x30, /* SATA phy register: SError */
129 PORT_SCR_ACT = 0x34, /* SATA phy register: SActive */
130 PORT_SCR_NTF = 0x3c, /* SATA phy register: SNotification */
132 /* PORT_IRQ_{STAT,MASK} bits */
133 PORT_IRQ_COLD_PRES = (1 << 31), /* cold presence detect */
134 PORT_IRQ_TF_ERR = (1 << 30), /* task file error */
135 PORT_IRQ_HBUS_ERR = (1 << 29), /* host bus fatal error */
136 PORT_IRQ_HBUS_DATA_ERR = (1 << 28), /* host bus data error */
137 PORT_IRQ_IF_ERR = (1 << 27), /* interface fatal error */
138 PORT_IRQ_IF_NONFATAL = (1 << 26), /* interface non-fatal error */
139 PORT_IRQ_OVERFLOW = (1 << 24), /* xfer exhausted available S/G */
140 PORT_IRQ_BAD_PMP = (1 << 23), /* incorrect port multiplier */
142 PORT_IRQ_PHYRDY = (1 << 22), /* PhyRdy changed */
143 PORT_IRQ_DEV_ILCK = (1 << 7), /* device interlock */
144 PORT_IRQ_CONNECT = (1 << 6), /* port connect change status */
145 PORT_IRQ_SG_DONE = (1 << 5), /* descriptor processed */
146 PORT_IRQ_UNK_FIS = (1 << 4), /* unknown FIS rx'd */
147 PORT_IRQ_SDB_FIS = (1 << 3), /* Set Device Bits FIS rx'd */
148 PORT_IRQ_DMAS_FIS = (1 << 2), /* DMA Setup FIS rx'd */
149 PORT_IRQ_PIOS_FIS = (1 << 1), /* PIO Setup FIS rx'd */
150 PORT_IRQ_D2H_REG_FIS = (1 << 0), /* D2H Register FIS rx'd */
152 PORT_IRQ_FREEZE = PORT_IRQ_HBUS_ERR |
158 PORT_IRQ_ERROR = PORT_IRQ_FREEZE |
160 PORT_IRQ_HBUS_DATA_ERR,
161 DEF_PORT_IRQ = PORT_IRQ_ERROR | PORT_IRQ_SG_DONE |
162 PORT_IRQ_SDB_FIS | PORT_IRQ_DMAS_FIS |
163 PORT_IRQ_PIOS_FIS | PORT_IRQ_D2H_REG_FIS,
166 PORT_CMD_ASP = (1 << 27), /* Aggressive Slumber/Partial */
167 PORT_CMD_ALPE = (1 << 26), /* Aggressive Link PM enable */
168 PORT_CMD_ATAPI = (1 << 24), /* Device is ATAPI */
169 PORT_CMD_PMP = (1 << 17), /* PMP attached */
170 PORT_CMD_LIST_ON = (1 << 15), /* cmd list DMA engine running */
171 PORT_CMD_FIS_ON = (1 << 14), /* FIS DMA engine running */
172 PORT_CMD_FIS_RX = (1 << 4), /* Enable FIS receive DMA engine */
173 PORT_CMD_CLO = (1 << 3), /* Command list override */
174 PORT_CMD_POWER_ON = (1 << 2), /* Power up device */
175 PORT_CMD_SPIN_UP = (1 << 1), /* Spin up device */
176 PORT_CMD_START = (1 << 0), /* Enable port DMA engine */
178 PORT_CMD_ICC_MASK = (0xf << 28), /* i/f ICC state mask */
179 PORT_CMD_ICC_ACTIVE = (0x1 << 28), /* Put i/f in active state */
180 PORT_CMD_ICC_PARTIAL = (0x2 << 28), /* Put i/f in partial state */
181 PORT_CMD_ICC_SLUMBER = (0x6 << 28), /* Put i/f in slumber state */
183 /* hpriv->flags bits */
184 AHCI_HFLAG_NO_NCQ = (1 << 0),
185 AHCI_HFLAG_IGN_IRQ_IF_ERR = (1 << 1), /* ignore IRQ_IF_ERR */
186 AHCI_HFLAG_IGN_SERR_INTERNAL = (1 << 2), /* ignore SERR_INTERNAL */
187 AHCI_HFLAG_32BIT_ONLY = (1 << 3), /* force 32bit */
188 AHCI_HFLAG_MV_PATA = (1 << 4), /* PATA port */
189 AHCI_HFLAG_NO_MSI = (1 << 5), /* no PCI MSI */
190 AHCI_HFLAG_NO_PMP = (1 << 6), /* no PMP */
191 AHCI_HFLAG_NO_HOTPLUG = (1 << 7), /* ignore PxSERR.DIAG.N */
192 AHCI_HFLAG_SECT255 = (1 << 8), /* max 255 sectors */
196 AHCI_FLAG_COMMON = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
197 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA |
198 ATA_FLAG_ACPI_SATA | ATA_FLAG_AN |
201 ICH_MAP = 0x90, /* ICH MAP register */
204 struct ahci_cmd_hdr {
219 struct ahci_host_priv {
220 unsigned int flags; /* AHCI_HFLAG_* */
221 u32 cap; /* cap to use */
222 u32 port_map; /* port map to use */
223 u32 saved_cap; /* saved initial cap */
224 u32 saved_port_map; /* saved initial port_map */
227 struct ahci_port_priv {
228 struct ata_link *active_link;
229 struct ahci_cmd_hdr *cmd_slot;
230 dma_addr_t cmd_slot_dma;
232 dma_addr_t cmd_tbl_dma;
234 dma_addr_t rx_fis_dma;
235 /* for NCQ spurious interrupt analysis */
236 unsigned int ncq_saw_d2h:1;
237 unsigned int ncq_saw_dmas:1;
238 unsigned int ncq_saw_sdb:1;
239 u32 intr_mask; /* interrupts to enable */
242 static int ahci_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val);
243 static int ahci_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val);
244 static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
245 static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc);
246 static int ahci_port_start(struct ata_port *ap);
247 static void ahci_port_stop(struct ata_port *ap);
248 static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
249 static void ahci_qc_prep(struct ata_queued_cmd *qc);
250 static u8 ahci_check_status(struct ata_port *ap);
251 static void ahci_freeze(struct ata_port *ap);
252 static void ahci_thaw(struct ata_port *ap);
253 static void ahci_pmp_attach(struct ata_port *ap);
254 static void ahci_pmp_detach(struct ata_port *ap);
255 static void ahci_error_handler(struct ata_port *ap);
256 static void ahci_vt8251_error_handler(struct ata_port *ap);
257 static void ahci_p5wdh_error_handler(struct ata_port *ap);
258 static void ahci_post_internal_cmd(struct ata_queued_cmd *qc);
259 static int ahci_port_resume(struct ata_port *ap);
260 static void ahci_dev_config(struct ata_device *dev);
261 static unsigned int ahci_fill_sg(struct ata_queued_cmd *qc, void *cmd_tbl);
262 static void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag,
265 static int ahci_port_suspend(struct ata_port *ap, pm_message_t mesg);
266 static int ahci_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
267 static int ahci_pci_device_resume(struct pci_dev *pdev);
270 static struct class_device_attribute *ahci_shost_attrs[] = {
271 &class_device_attr_link_power_management_policy,
275 static struct scsi_host_template ahci_sht = {
276 ATA_NCQ_SHT(DRV_NAME),
277 .can_queue = AHCI_MAX_CMDS - 1,
278 .sg_tablesize = AHCI_MAX_SG,
279 .dma_boundary = AHCI_DMA_BOUNDARY,
280 .shost_attrs = ahci_shost_attrs,
283 static struct ata_port_operations ahci_ops = {
284 .inherits = &sata_pmp_port_ops,
286 .check_status = ahci_check_status,
287 .check_altstatus = ahci_check_status,
289 .tf_read = ahci_tf_read,
290 .qc_defer = sata_pmp_qc_defer_cmd_switch,
291 .qc_prep = ahci_qc_prep,
292 .qc_issue = ahci_qc_issue,
294 .freeze = ahci_freeze,
296 .error_handler = ahci_error_handler,
297 .post_internal_cmd = ahci_post_internal_cmd,
298 .dev_config = ahci_dev_config,
300 .scr_read = ahci_scr_read,
301 .scr_write = ahci_scr_write,
302 .pmp_attach = ahci_pmp_attach,
303 .pmp_detach = ahci_pmp_detach,
305 .enable_pm = ahci_enable_alpm,
306 .disable_pm = ahci_disable_alpm,
308 .port_suspend = ahci_port_suspend,
309 .port_resume = ahci_port_resume,
311 .port_start = ahci_port_start,
312 .port_stop = ahci_port_stop,
315 static struct ata_port_operations ahci_vt8251_ops = {
316 .inherits = &ahci_ops,
317 .error_handler = ahci_vt8251_error_handler,
320 static struct ata_port_operations ahci_p5wdh_ops = {
321 .inherits = &ahci_ops,
322 .error_handler = ahci_p5wdh_error_handler,
325 #define AHCI_HFLAGS(flags) .private_data = (void *)(flags)
327 static const struct ata_port_info ahci_port_info[] = {
330 .flags = AHCI_FLAG_COMMON,
331 .pio_mask = 0x1f, /* pio0-4 */
332 .udma_mask = ATA_UDMA6,
333 .port_ops = &ahci_ops,
335 /* board_ahci_vt8251 */
337 AHCI_HFLAGS (AHCI_HFLAG_NO_NCQ | AHCI_HFLAG_NO_PMP),
338 .flags = AHCI_FLAG_COMMON,
339 .pio_mask = 0x1f, /* pio0-4 */
340 .udma_mask = ATA_UDMA6,
341 .port_ops = &ahci_vt8251_ops,
343 /* board_ahci_ign_iferr */
345 AHCI_HFLAGS (AHCI_HFLAG_IGN_IRQ_IF_ERR),
346 .flags = AHCI_FLAG_COMMON,
347 .pio_mask = 0x1f, /* pio0-4 */
348 .udma_mask = ATA_UDMA6,
349 .port_ops = &ahci_ops,
351 /* board_ahci_sb600 */
353 AHCI_HFLAGS (AHCI_HFLAG_IGN_SERR_INTERNAL |
354 AHCI_HFLAG_32BIT_ONLY |
355 AHCI_HFLAG_SECT255 | AHCI_HFLAG_NO_PMP),
356 .flags = AHCI_FLAG_COMMON,
357 .pio_mask = 0x1f, /* pio0-4 */
358 .udma_mask = ATA_UDMA6,
359 .port_ops = &ahci_ops,
363 AHCI_HFLAGS (AHCI_HFLAG_NO_NCQ | AHCI_HFLAG_NO_MSI |
365 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
366 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
367 .pio_mask = 0x1f, /* pio0-4 */
368 .udma_mask = ATA_UDMA6,
369 .port_ops = &ahci_ops,
371 /* board_ahci_sb700 */
373 AHCI_HFLAGS (AHCI_HFLAG_IGN_SERR_INTERNAL |
375 .flags = AHCI_FLAG_COMMON,
376 .pio_mask = 0x1f, /* pio0-4 */
377 .udma_mask = ATA_UDMA6,
378 .port_ops = &ahci_ops,
382 static const struct pci_device_id ahci_pci_tbl[] = {
384 { PCI_VDEVICE(INTEL, 0x2652), board_ahci }, /* ICH6 */
385 { PCI_VDEVICE(INTEL, 0x2653), board_ahci }, /* ICH6M */
386 { PCI_VDEVICE(INTEL, 0x27c1), board_ahci }, /* ICH7 */
387 { PCI_VDEVICE(INTEL, 0x27c5), board_ahci }, /* ICH7M */
388 { PCI_VDEVICE(INTEL, 0x27c3), board_ahci }, /* ICH7R */
389 { PCI_VDEVICE(AL, 0x5288), board_ahci_ign_iferr }, /* ULi M5288 */
390 { PCI_VDEVICE(INTEL, 0x2681), board_ahci }, /* ESB2 */
391 { PCI_VDEVICE(INTEL, 0x2682), board_ahci }, /* ESB2 */
392 { PCI_VDEVICE(INTEL, 0x2683), board_ahci }, /* ESB2 */
393 { PCI_VDEVICE(INTEL, 0x27c6), board_ahci }, /* ICH7-M DH */
394 { PCI_VDEVICE(INTEL, 0x2821), board_ahci }, /* ICH8 */
395 { PCI_VDEVICE(INTEL, 0x2822), board_ahci }, /* ICH8 */
396 { PCI_VDEVICE(INTEL, 0x2824), board_ahci }, /* ICH8 */
397 { PCI_VDEVICE(INTEL, 0x2829), board_ahci }, /* ICH8M */
398 { PCI_VDEVICE(INTEL, 0x282a), board_ahci }, /* ICH8M */
399 { PCI_VDEVICE(INTEL, 0x2922), board_ahci }, /* ICH9 */
400 { PCI_VDEVICE(INTEL, 0x2923), board_ahci }, /* ICH9 */
401 { PCI_VDEVICE(INTEL, 0x2924), board_ahci }, /* ICH9 */
402 { PCI_VDEVICE(INTEL, 0x2925), board_ahci }, /* ICH9 */
403 { PCI_VDEVICE(INTEL, 0x2927), board_ahci }, /* ICH9 */
404 { PCI_VDEVICE(INTEL, 0x2929), board_ahci }, /* ICH9M */
405 { PCI_VDEVICE(INTEL, 0x292a), board_ahci }, /* ICH9M */
406 { PCI_VDEVICE(INTEL, 0x292b), board_ahci }, /* ICH9M */
407 { PCI_VDEVICE(INTEL, 0x292c), board_ahci }, /* ICH9M */
408 { PCI_VDEVICE(INTEL, 0x292f), board_ahci }, /* ICH9M */
409 { PCI_VDEVICE(INTEL, 0x294d), board_ahci }, /* ICH9 */
410 { PCI_VDEVICE(INTEL, 0x294e), board_ahci }, /* ICH9M */
411 { PCI_VDEVICE(INTEL, 0x502a), board_ahci }, /* Tolapai */
412 { PCI_VDEVICE(INTEL, 0x502b), board_ahci }, /* Tolapai */
413 { PCI_VDEVICE(INTEL, 0x3a05), board_ahci }, /* ICH10 */
414 { PCI_VDEVICE(INTEL, 0x3a25), board_ahci }, /* ICH10 */
416 /* JMicron 360/1/3/5/6, match class to avoid IDE function */
417 { PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
418 PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci_ign_iferr },
421 { PCI_VDEVICE(ATI, 0x4380), board_ahci_sb600 }, /* ATI SB600 */
422 { PCI_VDEVICE(ATI, 0x4390), board_ahci_sb700 }, /* ATI SB700/800 */
423 { PCI_VDEVICE(ATI, 0x4391), board_ahci_sb700 }, /* ATI SB700/800 */
424 { PCI_VDEVICE(ATI, 0x4392), board_ahci_sb700 }, /* ATI SB700/800 */
425 { PCI_VDEVICE(ATI, 0x4393), board_ahci_sb700 }, /* ATI SB700/800 */
426 { PCI_VDEVICE(ATI, 0x4394), board_ahci_sb700 }, /* ATI SB700/800 */
427 { PCI_VDEVICE(ATI, 0x4395), board_ahci_sb700 }, /* ATI SB700/800 */
430 { PCI_VDEVICE(VIA, 0x3349), board_ahci_vt8251 }, /* VIA VT8251 */
431 { PCI_VDEVICE(VIA, 0x6287), board_ahci_vt8251 }, /* VIA VT8251 */
434 { PCI_VDEVICE(NVIDIA, 0x044c), board_ahci }, /* MCP65 */
435 { PCI_VDEVICE(NVIDIA, 0x044d), board_ahci }, /* MCP65 */
436 { PCI_VDEVICE(NVIDIA, 0x044e), board_ahci }, /* MCP65 */
437 { PCI_VDEVICE(NVIDIA, 0x044f), board_ahci }, /* MCP65 */
438 { PCI_VDEVICE(NVIDIA, 0x045c), board_ahci }, /* MCP65 */
439 { PCI_VDEVICE(NVIDIA, 0x045d), board_ahci }, /* MCP65 */
440 { PCI_VDEVICE(NVIDIA, 0x045e), board_ahci }, /* MCP65 */
441 { PCI_VDEVICE(NVIDIA, 0x045f), board_ahci }, /* MCP65 */
442 { PCI_VDEVICE(NVIDIA, 0x0550), board_ahci }, /* MCP67 */
443 { PCI_VDEVICE(NVIDIA, 0x0551), board_ahci }, /* MCP67 */
444 { PCI_VDEVICE(NVIDIA, 0x0552), board_ahci }, /* MCP67 */
445 { PCI_VDEVICE(NVIDIA, 0x0553), board_ahci }, /* MCP67 */
446 { PCI_VDEVICE(NVIDIA, 0x0554), board_ahci }, /* MCP67 */
447 { PCI_VDEVICE(NVIDIA, 0x0555), board_ahci }, /* MCP67 */
448 { PCI_VDEVICE(NVIDIA, 0x0556), board_ahci }, /* MCP67 */
449 { PCI_VDEVICE(NVIDIA, 0x0557), board_ahci }, /* MCP67 */
450 { PCI_VDEVICE(NVIDIA, 0x0558), board_ahci }, /* MCP67 */
451 { PCI_VDEVICE(NVIDIA, 0x0559), board_ahci }, /* MCP67 */
452 { PCI_VDEVICE(NVIDIA, 0x055a), board_ahci }, /* MCP67 */
453 { PCI_VDEVICE(NVIDIA, 0x055b), board_ahci }, /* MCP67 */
454 { PCI_VDEVICE(NVIDIA, 0x07f0), board_ahci }, /* MCP73 */
455 { PCI_VDEVICE(NVIDIA, 0x07f1), board_ahci }, /* MCP73 */
456 { PCI_VDEVICE(NVIDIA, 0x07f2), board_ahci }, /* MCP73 */
457 { PCI_VDEVICE(NVIDIA, 0x07f3), board_ahci }, /* MCP73 */
458 { PCI_VDEVICE(NVIDIA, 0x07f4), board_ahci }, /* MCP73 */
459 { PCI_VDEVICE(NVIDIA, 0x07f5), board_ahci }, /* MCP73 */
460 { PCI_VDEVICE(NVIDIA, 0x07f6), board_ahci }, /* MCP73 */
461 { PCI_VDEVICE(NVIDIA, 0x07f7), board_ahci }, /* MCP73 */
462 { PCI_VDEVICE(NVIDIA, 0x07f8), board_ahci }, /* MCP73 */
463 { PCI_VDEVICE(NVIDIA, 0x07f9), board_ahci }, /* MCP73 */
464 { PCI_VDEVICE(NVIDIA, 0x07fa), board_ahci }, /* MCP73 */
465 { PCI_VDEVICE(NVIDIA, 0x07fb), board_ahci }, /* MCP73 */
466 { PCI_VDEVICE(NVIDIA, 0x0ad0), board_ahci }, /* MCP77 */
467 { PCI_VDEVICE(NVIDIA, 0x0ad1), board_ahci }, /* MCP77 */
468 { PCI_VDEVICE(NVIDIA, 0x0ad2), board_ahci }, /* MCP77 */
469 { PCI_VDEVICE(NVIDIA, 0x0ad3), board_ahci }, /* MCP77 */
470 { PCI_VDEVICE(NVIDIA, 0x0ad4), board_ahci }, /* MCP77 */
471 { PCI_VDEVICE(NVIDIA, 0x0ad5), board_ahci }, /* MCP77 */
472 { PCI_VDEVICE(NVIDIA, 0x0ad6), board_ahci }, /* MCP77 */
473 { PCI_VDEVICE(NVIDIA, 0x0ad7), board_ahci }, /* MCP77 */
474 { PCI_VDEVICE(NVIDIA, 0x0ad8), board_ahci }, /* MCP77 */
475 { PCI_VDEVICE(NVIDIA, 0x0ad9), board_ahci }, /* MCP77 */
476 { PCI_VDEVICE(NVIDIA, 0x0ada), board_ahci }, /* MCP77 */
477 { PCI_VDEVICE(NVIDIA, 0x0adb), board_ahci }, /* MCP77 */
478 { PCI_VDEVICE(NVIDIA, 0x0ab4), board_ahci }, /* MCP79 */
479 { PCI_VDEVICE(NVIDIA, 0x0ab5), board_ahci }, /* MCP79 */
480 { PCI_VDEVICE(NVIDIA, 0x0ab6), board_ahci }, /* MCP79 */
481 { PCI_VDEVICE(NVIDIA, 0x0ab7), board_ahci }, /* MCP79 */
482 { PCI_VDEVICE(NVIDIA, 0x0ab8), board_ahci }, /* MCP79 */
483 { PCI_VDEVICE(NVIDIA, 0x0ab9), board_ahci }, /* MCP79 */
484 { PCI_VDEVICE(NVIDIA, 0x0aba), board_ahci }, /* MCP79 */
485 { PCI_VDEVICE(NVIDIA, 0x0abb), board_ahci }, /* MCP79 */
486 { PCI_VDEVICE(NVIDIA, 0x0abc), board_ahci }, /* MCP79 */
487 { PCI_VDEVICE(NVIDIA, 0x0abd), board_ahci }, /* MCP79 */
488 { PCI_VDEVICE(NVIDIA, 0x0abe), board_ahci }, /* MCP79 */
489 { PCI_VDEVICE(NVIDIA, 0x0abf), board_ahci }, /* MCP79 */
490 { PCI_VDEVICE(NVIDIA, 0x0bc8), board_ahci }, /* MCP7B */
491 { PCI_VDEVICE(NVIDIA, 0x0bc9), board_ahci }, /* MCP7B */
492 { PCI_VDEVICE(NVIDIA, 0x0bca), board_ahci }, /* MCP7B */
493 { PCI_VDEVICE(NVIDIA, 0x0bcb), board_ahci }, /* MCP7B */
494 { PCI_VDEVICE(NVIDIA, 0x0bcc), board_ahci }, /* MCP7B */
495 { PCI_VDEVICE(NVIDIA, 0x0bcd), board_ahci }, /* MCP7B */
496 { PCI_VDEVICE(NVIDIA, 0x0bce), board_ahci }, /* MCP7B */
497 { PCI_VDEVICE(NVIDIA, 0x0bcf), board_ahci }, /* MCP7B */
498 { PCI_VDEVICE(NVIDIA, 0x0bd0), board_ahci }, /* MCP7B */
499 { PCI_VDEVICE(NVIDIA, 0x0bd1), board_ahci }, /* MCP7B */
500 { PCI_VDEVICE(NVIDIA, 0x0bd2), board_ahci }, /* MCP7B */
501 { PCI_VDEVICE(NVIDIA, 0x0bd3), board_ahci }, /* MCP7B */
504 { PCI_VDEVICE(SI, 0x1184), board_ahci }, /* SiS 966 */
505 { PCI_VDEVICE(SI, 0x1185), board_ahci }, /* SiS 966 */
506 { PCI_VDEVICE(SI, 0x0186), board_ahci }, /* SiS 968 */
509 { PCI_VDEVICE(MARVELL, 0x6145), board_ahci_mv }, /* 6145 */
510 { PCI_VDEVICE(MARVELL, 0x6121), board_ahci_mv }, /* 6121 */
512 /* Generic, PCI class code for AHCI */
513 { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
514 PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci },
516 { } /* terminate list */
520 static struct pci_driver ahci_pci_driver = {
522 .id_table = ahci_pci_tbl,
523 .probe = ahci_init_one,
524 .remove = ata_pci_remove_one,
526 .suspend = ahci_pci_device_suspend,
527 .resume = ahci_pci_device_resume,
532 static inline int ahci_nr_ports(u32 cap)
534 return (cap & 0x1f) + 1;
537 static inline void __iomem *__ahci_port_base(struct ata_host *host,
538 unsigned int port_no)
540 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
542 return mmio + 0x100 + (port_no * 0x80);
545 static inline void __iomem *ahci_port_base(struct ata_port *ap)
547 return __ahci_port_base(ap->host, ap->port_no);
550 static void ahci_enable_ahci(void __iomem *mmio)
554 /* turn on AHCI_EN */
555 tmp = readl(mmio + HOST_CTL);
556 if (!(tmp & HOST_AHCI_EN)) {
558 writel(tmp, mmio + HOST_CTL);
559 tmp = readl(mmio + HOST_CTL); /* flush && sanity check */
560 WARN_ON(!(tmp & HOST_AHCI_EN));
565 * ahci_save_initial_config - Save and fixup initial config values
566 * @pdev: target PCI device
567 * @hpriv: host private area to store config values
569 * Some registers containing configuration info might be setup by
570 * BIOS and might be cleared on reset. This function saves the
571 * initial values of those registers into @hpriv such that they
572 * can be restored after controller reset.
574 * If inconsistent, config values are fixed up by this function.
579 static void ahci_save_initial_config(struct pci_dev *pdev,
580 struct ahci_host_priv *hpriv)
582 void __iomem *mmio = pcim_iomap_table(pdev)[AHCI_PCI_BAR];
587 /* make sure AHCI mode is enabled before accessing CAP */
588 ahci_enable_ahci(mmio);
590 /* Values prefixed with saved_ are written back to host after
591 * reset. Values without are used for driver operation.
593 hpriv->saved_cap = cap = readl(mmio + HOST_CAP);
594 hpriv->saved_port_map = port_map = readl(mmio + HOST_PORTS_IMPL);
596 /* some chips have errata preventing 64bit use */
597 if ((cap & HOST_CAP_64) && (hpriv->flags & AHCI_HFLAG_32BIT_ONLY)) {
598 dev_printk(KERN_INFO, &pdev->dev,
599 "controller can't do 64bit DMA, forcing 32bit\n");
603 if ((cap & HOST_CAP_NCQ) && (hpriv->flags & AHCI_HFLAG_NO_NCQ)) {
604 dev_printk(KERN_INFO, &pdev->dev,
605 "controller can't do NCQ, turning off CAP_NCQ\n");
606 cap &= ~HOST_CAP_NCQ;
609 if ((cap & HOST_CAP_PMP) && (hpriv->flags & AHCI_HFLAG_NO_PMP)) {
610 dev_printk(KERN_INFO, &pdev->dev,
611 "controller can't do PMP, turning off CAP_PMP\n");
612 cap &= ~HOST_CAP_PMP;
616 * Temporary Marvell 6145 hack: PATA port presence
617 * is asserted through the standard AHCI port
618 * presence register, as bit 4 (counting from 0)
620 if (hpriv->flags & AHCI_HFLAG_MV_PATA) {
621 if (pdev->device == 0x6121)
625 dev_printk(KERN_ERR, &pdev->dev,
626 "MV_AHCI HACK: port_map %x -> %x\n",
633 /* cross check port_map and cap.n_ports */
637 for (i = 0; i < AHCI_MAX_PORTS; i++)
638 if (port_map & (1 << i))
641 /* If PI has more ports than n_ports, whine, clear
642 * port_map and let it be generated from n_ports.
644 if (map_ports > ahci_nr_ports(cap)) {
645 dev_printk(KERN_WARNING, &pdev->dev,
646 "implemented port map (0x%x) contains more "
647 "ports than nr_ports (%u), using nr_ports\n",
648 port_map, ahci_nr_ports(cap));
653 /* fabricate port_map from cap.nr_ports */
655 port_map = (1 << ahci_nr_ports(cap)) - 1;
656 dev_printk(KERN_WARNING, &pdev->dev,
657 "forcing PORTS_IMPL to 0x%x\n", port_map);
659 /* write the fixed up value to the PI register */
660 hpriv->saved_port_map = port_map;
663 /* record values to use during operation */
665 hpriv->port_map = port_map;
669 * ahci_restore_initial_config - Restore initial config
670 * @host: target ATA host
672 * Restore initial config stored by ahci_save_initial_config().
677 static void ahci_restore_initial_config(struct ata_host *host)
679 struct ahci_host_priv *hpriv = host->private_data;
680 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
682 writel(hpriv->saved_cap, mmio + HOST_CAP);
683 writel(hpriv->saved_port_map, mmio + HOST_PORTS_IMPL);
684 (void) readl(mmio + HOST_PORTS_IMPL); /* flush */
687 static unsigned ahci_scr_offset(struct ata_port *ap, unsigned int sc_reg)
689 static const int offset[] = {
690 [SCR_STATUS] = PORT_SCR_STAT,
691 [SCR_CONTROL] = PORT_SCR_CTL,
692 [SCR_ERROR] = PORT_SCR_ERR,
693 [SCR_ACTIVE] = PORT_SCR_ACT,
694 [SCR_NOTIFICATION] = PORT_SCR_NTF,
696 struct ahci_host_priv *hpriv = ap->host->private_data;
698 if (sc_reg < ARRAY_SIZE(offset) &&
699 (sc_reg != SCR_NOTIFICATION || (hpriv->cap & HOST_CAP_SNTF)))
700 return offset[sc_reg];
704 static int ahci_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
706 void __iomem *port_mmio = ahci_port_base(ap);
707 int offset = ahci_scr_offset(ap, sc_reg);
710 *val = readl(port_mmio + offset);
716 static int ahci_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
718 void __iomem *port_mmio = ahci_port_base(ap);
719 int offset = ahci_scr_offset(ap, sc_reg);
722 writel(val, port_mmio + offset);
728 static void ahci_start_engine(struct ata_port *ap)
730 void __iomem *port_mmio = ahci_port_base(ap);
734 tmp = readl(port_mmio + PORT_CMD);
735 tmp |= PORT_CMD_START;
736 writel(tmp, port_mmio + PORT_CMD);
737 readl(port_mmio + PORT_CMD); /* flush */
740 static int ahci_stop_engine(struct ata_port *ap)
742 void __iomem *port_mmio = ahci_port_base(ap);
745 tmp = readl(port_mmio + PORT_CMD);
747 /* check if the HBA is idle */
748 if ((tmp & (PORT_CMD_START | PORT_CMD_LIST_ON)) == 0)
751 /* setting HBA to idle */
752 tmp &= ~PORT_CMD_START;
753 writel(tmp, port_mmio + PORT_CMD);
755 /* wait for engine to stop. This could be as long as 500 msec */
756 tmp = ata_wait_register(port_mmio + PORT_CMD,
757 PORT_CMD_LIST_ON, PORT_CMD_LIST_ON, 1, 500);
758 if (tmp & PORT_CMD_LIST_ON)
764 static void ahci_start_fis_rx(struct ata_port *ap)
766 void __iomem *port_mmio = ahci_port_base(ap);
767 struct ahci_host_priv *hpriv = ap->host->private_data;
768 struct ahci_port_priv *pp = ap->private_data;
771 /* set FIS registers */
772 if (hpriv->cap & HOST_CAP_64)
773 writel((pp->cmd_slot_dma >> 16) >> 16,
774 port_mmio + PORT_LST_ADDR_HI);
775 writel(pp->cmd_slot_dma & 0xffffffff, port_mmio + PORT_LST_ADDR);
777 if (hpriv->cap & HOST_CAP_64)
778 writel((pp->rx_fis_dma >> 16) >> 16,
779 port_mmio + PORT_FIS_ADDR_HI);
780 writel(pp->rx_fis_dma & 0xffffffff, port_mmio + PORT_FIS_ADDR);
782 /* enable FIS reception */
783 tmp = readl(port_mmio + PORT_CMD);
784 tmp |= PORT_CMD_FIS_RX;
785 writel(tmp, port_mmio + PORT_CMD);
788 readl(port_mmio + PORT_CMD);
791 static int ahci_stop_fis_rx(struct ata_port *ap)
793 void __iomem *port_mmio = ahci_port_base(ap);
796 /* disable FIS reception */
797 tmp = readl(port_mmio + PORT_CMD);
798 tmp &= ~PORT_CMD_FIS_RX;
799 writel(tmp, port_mmio + PORT_CMD);
801 /* wait for completion, spec says 500ms, give it 1000 */
802 tmp = ata_wait_register(port_mmio + PORT_CMD, PORT_CMD_FIS_ON,
803 PORT_CMD_FIS_ON, 10, 1000);
804 if (tmp & PORT_CMD_FIS_ON)
810 static void ahci_power_up(struct ata_port *ap)
812 struct ahci_host_priv *hpriv = ap->host->private_data;
813 void __iomem *port_mmio = ahci_port_base(ap);
816 cmd = readl(port_mmio + PORT_CMD) & ~PORT_CMD_ICC_MASK;
819 if (hpriv->cap & HOST_CAP_SSS) {
820 cmd |= PORT_CMD_SPIN_UP;
821 writel(cmd, port_mmio + PORT_CMD);
825 writel(cmd | PORT_CMD_ICC_ACTIVE, port_mmio + PORT_CMD);
828 static void ahci_disable_alpm(struct ata_port *ap)
830 struct ahci_host_priv *hpriv = ap->host->private_data;
831 void __iomem *port_mmio = ahci_port_base(ap);
833 struct ahci_port_priv *pp = ap->private_data;
835 /* IPM bits should be disabled by libata-core */
836 /* get the existing command bits */
837 cmd = readl(port_mmio + PORT_CMD);
839 /* disable ALPM and ASP */
840 cmd &= ~PORT_CMD_ASP;
841 cmd &= ~PORT_CMD_ALPE;
843 /* force the interface back to active */
844 cmd |= PORT_CMD_ICC_ACTIVE;
846 /* write out new cmd value */
847 writel(cmd, port_mmio + PORT_CMD);
848 cmd = readl(port_mmio + PORT_CMD);
850 /* wait 10ms to be sure we've come out of any low power state */
853 /* clear out any PhyRdy stuff from interrupt status */
854 writel(PORT_IRQ_PHYRDY, port_mmio + PORT_IRQ_STAT);
856 /* go ahead and clean out PhyRdy Change from Serror too */
857 ahci_scr_write(ap, SCR_ERROR, ((1 << 16) | (1 << 18)));
860 * Clear flag to indicate that we should ignore all PhyRdy
863 hpriv->flags &= ~AHCI_HFLAG_NO_HOTPLUG;
866 * Enable interrupts on Phy Ready.
868 pp->intr_mask |= PORT_IRQ_PHYRDY;
869 writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
872 * don't change the link pm policy - we can be called
873 * just to turn of link pm temporarily
877 static int ahci_enable_alpm(struct ata_port *ap,
880 struct ahci_host_priv *hpriv = ap->host->private_data;
881 void __iomem *port_mmio = ahci_port_base(ap);
883 struct ahci_port_priv *pp = ap->private_data;
886 /* Make sure the host is capable of link power management */
887 if (!(hpriv->cap & HOST_CAP_ALPM))
891 case MAX_PERFORMANCE:
894 * if we came here with NOT_AVAILABLE,
895 * it just means this is the first time we
896 * have tried to enable - default to max performance,
897 * and let the user go to lower power modes on request.
899 ahci_disable_alpm(ap);
902 /* configure HBA to enter SLUMBER */
906 /* configure HBA to enter PARTIAL */
914 * Disable interrupts on Phy Ready. This keeps us from
915 * getting woken up due to spurious phy ready interrupts
916 * TBD - Hot plug should be done via polling now, is
917 * that even supported?
919 pp->intr_mask &= ~PORT_IRQ_PHYRDY;
920 writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
923 * Set a flag to indicate that we should ignore all PhyRdy
924 * state changes since these can happen now whenever we
927 hpriv->flags |= AHCI_HFLAG_NO_HOTPLUG;
929 /* get the existing command bits */
930 cmd = readl(port_mmio + PORT_CMD);
933 * Set ASP based on Policy
938 * Setting this bit will instruct the HBA to aggressively
939 * enter a lower power link state when it's appropriate and
940 * based on the value set above for ASP
942 cmd |= PORT_CMD_ALPE;
944 /* write out new cmd value */
945 writel(cmd, port_mmio + PORT_CMD);
946 cmd = readl(port_mmio + PORT_CMD);
948 /* IPM bits should be set by libata-core */
953 static void ahci_power_down(struct ata_port *ap)
955 struct ahci_host_priv *hpriv = ap->host->private_data;
956 void __iomem *port_mmio = ahci_port_base(ap);
959 if (!(hpriv->cap & HOST_CAP_SSS))
962 /* put device into listen mode, first set PxSCTL.DET to 0 */
963 scontrol = readl(port_mmio + PORT_SCR_CTL);
965 writel(scontrol, port_mmio + PORT_SCR_CTL);
967 /* then set PxCMD.SUD to 0 */
968 cmd = readl(port_mmio + PORT_CMD) & ~PORT_CMD_ICC_MASK;
969 cmd &= ~PORT_CMD_SPIN_UP;
970 writel(cmd, port_mmio + PORT_CMD);
974 static void ahci_start_port(struct ata_port *ap)
976 /* enable FIS reception */
977 ahci_start_fis_rx(ap);
980 ahci_start_engine(ap);
983 static int ahci_deinit_port(struct ata_port *ap, const char **emsg)
988 rc = ahci_stop_engine(ap);
990 *emsg = "failed to stop engine";
994 /* disable FIS reception */
995 rc = ahci_stop_fis_rx(ap);
997 *emsg = "failed stop FIS RX";
1004 static int ahci_reset_controller(struct ata_host *host)
1006 struct pci_dev *pdev = to_pci_dev(host->dev);
1007 struct ahci_host_priv *hpriv = host->private_data;
1008 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
1011 /* we must be in AHCI mode, before using anything
1012 * AHCI-specific, such as HOST_RESET.
1014 ahci_enable_ahci(mmio);
1016 /* global controller reset */
1017 if (!ahci_skip_host_reset) {
1018 tmp = readl(mmio + HOST_CTL);
1019 if ((tmp & HOST_RESET) == 0) {
1020 writel(tmp | HOST_RESET, mmio + HOST_CTL);
1021 readl(mmio + HOST_CTL); /* flush */
1024 /* reset must complete within 1 second, or
1025 * the hardware should be considered fried.
1029 tmp = readl(mmio + HOST_CTL);
1030 if (tmp & HOST_RESET) {
1031 dev_printk(KERN_ERR, host->dev,
1032 "controller reset failed (0x%x)\n", tmp);
1036 /* turn on AHCI mode */
1037 ahci_enable_ahci(mmio);
1039 /* Some registers might be cleared on reset. Restore
1042 ahci_restore_initial_config(host);
1044 dev_printk(KERN_INFO, host->dev,
1045 "skipping global host reset\n");
1047 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
1051 pci_read_config_word(pdev, 0x92, &tmp16);
1052 if ((tmp16 & hpriv->port_map) != hpriv->port_map) {
1053 tmp16 |= hpriv->port_map;
1054 pci_write_config_word(pdev, 0x92, tmp16);
1061 static void ahci_port_init(struct pci_dev *pdev, struct ata_port *ap,
1062 int port_no, void __iomem *mmio,
1063 void __iomem *port_mmio)
1065 const char *emsg = NULL;
1069 /* make sure port is not active */
1070 rc = ahci_deinit_port(ap, &emsg);
1072 dev_printk(KERN_WARNING, &pdev->dev,
1073 "%s (%d)\n", emsg, rc);
1076 tmp = readl(port_mmio + PORT_SCR_ERR);
1077 VPRINTK("PORT_SCR_ERR 0x%x\n", tmp);
1078 writel(tmp, port_mmio + PORT_SCR_ERR);
1080 /* clear port IRQ */
1081 tmp = readl(port_mmio + PORT_IRQ_STAT);
1082 VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp);
1084 writel(tmp, port_mmio + PORT_IRQ_STAT);
1086 writel(1 << port_no, mmio + HOST_IRQ_STAT);
1089 static void ahci_init_controller(struct ata_host *host)
1091 struct ahci_host_priv *hpriv = host->private_data;
1092 struct pci_dev *pdev = to_pci_dev(host->dev);
1093 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
1095 void __iomem *port_mmio;
1099 if (hpriv->flags & AHCI_HFLAG_MV_PATA) {
1100 if (pdev->device == 0x6121)
1104 port_mmio = __ahci_port_base(host, mv);
1106 writel(0, port_mmio + PORT_IRQ_MASK);
1108 /* clear port IRQ */
1109 tmp = readl(port_mmio + PORT_IRQ_STAT);
1110 VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp);
1112 writel(tmp, port_mmio + PORT_IRQ_STAT);
1115 for (i = 0; i < host->n_ports; i++) {
1116 struct ata_port *ap = host->ports[i];
1118 port_mmio = ahci_port_base(ap);
1119 if (ata_port_is_dummy(ap))
1122 ahci_port_init(pdev, ap, i, mmio, port_mmio);
1125 tmp = readl(mmio + HOST_CTL);
1126 VPRINTK("HOST_CTL 0x%x\n", tmp);
1127 writel(tmp | HOST_IRQ_EN, mmio + HOST_CTL);
1128 tmp = readl(mmio + HOST_CTL);
1129 VPRINTK("HOST_CTL 0x%x\n", tmp);
1132 static void ahci_dev_config(struct ata_device *dev)
1134 struct ahci_host_priv *hpriv = dev->link->ap->host->private_data;
1136 if (hpriv->flags & AHCI_HFLAG_SECT255) {
1137 dev->max_sectors = 255;
1138 ata_dev_printk(dev, KERN_INFO,
1139 "SB600 AHCI: limiting to 255 sectors per cmd\n");
1143 static unsigned int ahci_dev_classify(struct ata_port *ap)
1145 void __iomem *port_mmio = ahci_port_base(ap);
1146 struct ata_taskfile tf;
1149 tmp = readl(port_mmio + PORT_SIG);
1150 tf.lbah = (tmp >> 24) & 0xff;
1151 tf.lbam = (tmp >> 16) & 0xff;
1152 tf.lbal = (tmp >> 8) & 0xff;
1153 tf.nsect = (tmp) & 0xff;
1155 return ata_dev_classify(&tf);
1158 static void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag,
1161 dma_addr_t cmd_tbl_dma;
1163 cmd_tbl_dma = pp->cmd_tbl_dma + tag * AHCI_CMD_TBL_SZ;
1165 pp->cmd_slot[tag].opts = cpu_to_le32(opts);
1166 pp->cmd_slot[tag].status = 0;
1167 pp->cmd_slot[tag].tbl_addr = cpu_to_le32(cmd_tbl_dma & 0xffffffff);
1168 pp->cmd_slot[tag].tbl_addr_hi = cpu_to_le32((cmd_tbl_dma >> 16) >> 16);
1171 static int ahci_kick_engine(struct ata_port *ap, int force_restart)
1173 void __iomem *port_mmio = ap->ioaddr.cmd_addr;
1174 struct ahci_host_priv *hpriv = ap->host->private_data;
1178 /* do we need to kick the port? */
1179 busy = ahci_check_status(ap) & (ATA_BUSY | ATA_DRQ);
1180 if (!busy && !force_restart)
1184 rc = ahci_stop_engine(ap);
1188 /* need to do CLO? */
1194 if (!(hpriv->cap & HOST_CAP_CLO)) {
1200 tmp = readl(port_mmio + PORT_CMD);
1201 tmp |= PORT_CMD_CLO;
1202 writel(tmp, port_mmio + PORT_CMD);
1205 tmp = ata_wait_register(port_mmio + PORT_CMD,
1206 PORT_CMD_CLO, PORT_CMD_CLO, 1, 500);
1207 if (tmp & PORT_CMD_CLO)
1210 /* restart engine */
1212 ahci_start_engine(ap);
1216 static int ahci_exec_polled_cmd(struct ata_port *ap, int pmp,
1217 struct ata_taskfile *tf, int is_cmd, u16 flags,
1218 unsigned long timeout_msec)
1220 const u32 cmd_fis_len = 5; /* five dwords */
1221 struct ahci_port_priv *pp = ap->private_data;
1222 void __iomem *port_mmio = ahci_port_base(ap);
1223 u8 *fis = pp->cmd_tbl;
1226 /* prep the command */
1227 ata_tf_to_fis(tf, pmp, is_cmd, fis);
1228 ahci_fill_cmd_slot(pp, 0, cmd_fis_len | flags | (pmp << 12));
1231 writel(1, port_mmio + PORT_CMD_ISSUE);
1234 tmp = ata_wait_register(port_mmio + PORT_CMD_ISSUE, 0x1, 0x1,
1237 ahci_kick_engine(ap, 1);
1241 readl(port_mmio + PORT_CMD_ISSUE); /* flush */
1246 static int ahci_do_softreset(struct ata_link *link, unsigned int *class,
1247 int pmp, unsigned long deadline)
1249 struct ata_port *ap = link->ap;
1250 const char *reason = NULL;
1251 unsigned long now, msecs;
1252 struct ata_taskfile tf;
1257 if (ata_link_offline(link)) {
1258 DPRINTK("PHY reports no device\n");
1259 *class = ATA_DEV_NONE;
1263 /* prepare for SRST (AHCI-1.1 10.4.1) */
1264 rc = ahci_kick_engine(ap, 1);
1265 if (rc && rc != -EOPNOTSUPP)
1266 ata_link_printk(link, KERN_WARNING,
1267 "failed to reset engine (errno=%d)\n", rc);
1269 ata_tf_init(link->device, &tf);
1271 /* issue the first D2H Register FIS */
1274 if (time_after(now, deadline))
1275 msecs = jiffies_to_msecs(deadline - now);
1278 if (ahci_exec_polled_cmd(ap, pmp, &tf, 0,
1279 AHCI_CMD_RESET | AHCI_CMD_CLR_BUSY, msecs)) {
1281 reason = "1st FIS failed";
1285 /* spec says at least 5us, but be generous and sleep for 1ms */
1288 /* issue the second D2H Register FIS */
1289 tf.ctl &= ~ATA_SRST;
1290 ahci_exec_polled_cmd(ap, pmp, &tf, 0, 0, 0);
1292 /* wait a while before checking status */
1293 ata_wait_after_reset(ap, deadline);
1295 rc = ata_wait_ready(ap, deadline);
1296 /* link occupied, -ENODEV too is an error */
1298 reason = "device not ready";
1301 *class = ahci_dev_classify(ap);
1303 DPRINTK("EXIT, class=%u\n", *class);
1307 ata_link_printk(link, KERN_ERR, "softreset failed (%s)\n", reason);
1311 static int ahci_softreset(struct ata_link *link, unsigned int *class,
1312 unsigned long deadline)
1316 if (link->ap->flags & ATA_FLAG_PMP)
1317 pmp = SATA_PMP_CTRL_PORT;
1319 return ahci_do_softreset(link, class, pmp, deadline);
1322 static int ahci_hardreset(struct ata_link *link, unsigned int *class,
1323 unsigned long deadline)
1325 struct ata_port *ap = link->ap;
1326 struct ahci_port_priv *pp = ap->private_data;
1327 u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
1328 struct ata_taskfile tf;
1333 ahci_stop_engine(ap);
1335 /* clear D2H reception area to properly wait for D2H FIS */
1336 ata_tf_init(link->device, &tf);
1338 ata_tf_to_fis(&tf, 0, 0, d2h_fis);
1340 rc = sata_std_hardreset(link, class, deadline);
1342 ahci_start_engine(ap);
1344 if (rc == 0 && ata_link_online(link))
1345 *class = ahci_dev_classify(ap);
1346 if (rc != -EAGAIN && *class == ATA_DEV_UNKNOWN)
1347 *class = ATA_DEV_NONE;
1349 DPRINTK("EXIT, rc=%d, class=%u\n", rc, *class);
1353 static int ahci_vt8251_hardreset(struct ata_link *link, unsigned int *class,
1354 unsigned long deadline)
1356 struct ata_port *ap = link->ap;
1362 ahci_stop_engine(ap);
1364 rc = sata_link_hardreset(link, sata_ehc_deb_timing(&link->eh_context),
1367 /* vt8251 needs SError cleared for the port to operate */
1368 ahci_scr_read(ap, SCR_ERROR, &serror);
1369 ahci_scr_write(ap, SCR_ERROR, serror);
1371 ahci_start_engine(ap);
1373 DPRINTK("EXIT, rc=%d, class=%u\n", rc, *class);
1375 /* vt8251 doesn't clear BSY on signature FIS reception,
1376 * request follow-up softreset.
1378 return rc ?: -EAGAIN;
1381 static int ahci_p5wdh_hardreset(struct ata_link *link, unsigned int *class,
1382 unsigned long deadline)
1384 struct ata_port *ap = link->ap;
1385 struct ahci_port_priv *pp = ap->private_data;
1386 u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
1387 struct ata_taskfile tf;
1390 ahci_stop_engine(ap);
1392 /* clear D2H reception area to properly wait for D2H FIS */
1393 ata_tf_init(link->device, &tf);
1395 ata_tf_to_fis(&tf, 0, 0, d2h_fis);
1397 rc = sata_link_hardreset(link, sata_ehc_deb_timing(&link->eh_context),
1400 ahci_start_engine(ap);
1402 if (rc || ata_link_offline(link))
1405 /* spec mandates ">= 2ms" before checking status */
1408 /* The pseudo configuration device on SIMG4726 attached to
1409 * ASUS P5W-DH Deluxe doesn't send signature FIS after
1410 * hardreset if no device is attached to the first downstream
1411 * port && the pseudo device locks up on SRST w/ PMP==0. To
1412 * work around this, wait for !BSY only briefly. If BSY isn't
1413 * cleared, perform CLO and proceed to IDENTIFY (achieved by
1414 * ATA_LFLAG_NO_SRST and ATA_LFLAG_ASSUME_ATA).
1416 * Wait for two seconds. Devices attached to downstream port
1417 * which can't process the following IDENTIFY after this will
1418 * have to be reset again. For most cases, this should
1419 * suffice while making probing snappish enough.
1421 rc = ata_wait_ready(ap, jiffies + 2 * HZ);
1423 ahci_kick_engine(ap, 0);
1428 static void ahci_postreset(struct ata_link *link, unsigned int *class)
1430 struct ata_port *ap = link->ap;
1431 void __iomem *port_mmio = ahci_port_base(ap);
1434 ata_std_postreset(link, class);
1436 /* Make sure port's ATAPI bit is set appropriately */
1437 new_tmp = tmp = readl(port_mmio + PORT_CMD);
1438 if (*class == ATA_DEV_ATAPI)
1439 new_tmp |= PORT_CMD_ATAPI;
1441 new_tmp &= ~PORT_CMD_ATAPI;
1442 if (new_tmp != tmp) {
1443 writel(new_tmp, port_mmio + PORT_CMD);
1444 readl(port_mmio + PORT_CMD); /* flush */
1448 static int ahci_pmp_softreset(struct ata_link *link, unsigned int *class,
1449 unsigned long deadline)
1451 return ahci_do_softreset(link, class, link->pmp, deadline);
1454 static u8 ahci_check_status(struct ata_port *ap)
1456 void __iomem *mmio = ap->ioaddr.cmd_addr;
1458 return readl(mmio + PORT_TFDATA) & 0xFF;
1461 static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
1463 struct ahci_port_priv *pp = ap->private_data;
1464 u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
1466 ata_tf_from_fis(d2h_fis, tf);
1469 static unsigned int ahci_fill_sg(struct ata_queued_cmd *qc, void *cmd_tbl)
1471 struct scatterlist *sg;
1472 struct ahci_sg *ahci_sg = cmd_tbl + AHCI_CMD_TBL_HDR_SZ;
1478 * Next, the S/G list.
1480 for_each_sg(qc->sg, sg, qc->n_elem, si) {
1481 dma_addr_t addr = sg_dma_address(sg);
1482 u32 sg_len = sg_dma_len(sg);
1484 ahci_sg[si].addr = cpu_to_le32(addr & 0xffffffff);
1485 ahci_sg[si].addr_hi = cpu_to_le32((addr >> 16) >> 16);
1486 ahci_sg[si].flags_size = cpu_to_le32(sg_len - 1);
1492 static void ahci_qc_prep(struct ata_queued_cmd *qc)
1494 struct ata_port *ap = qc->ap;
1495 struct ahci_port_priv *pp = ap->private_data;
1496 int is_atapi = ata_is_atapi(qc->tf.protocol);
1499 const u32 cmd_fis_len = 5; /* five dwords */
1500 unsigned int n_elem;
1503 * Fill in command table information. First, the header,
1504 * a SATA Register - Host to Device command FIS.
1506 cmd_tbl = pp->cmd_tbl + qc->tag * AHCI_CMD_TBL_SZ;
1508 ata_tf_to_fis(&qc->tf, qc->dev->link->pmp, 1, cmd_tbl);
1510 memset(cmd_tbl + AHCI_CMD_TBL_CDB, 0, 32);
1511 memcpy(cmd_tbl + AHCI_CMD_TBL_CDB, qc->cdb, qc->dev->cdb_len);
1515 if (qc->flags & ATA_QCFLAG_DMAMAP)
1516 n_elem = ahci_fill_sg(qc, cmd_tbl);
1519 * Fill in command slot information.
1521 opts = cmd_fis_len | n_elem << 16 | (qc->dev->link->pmp << 12);
1522 if (qc->tf.flags & ATA_TFLAG_WRITE)
1523 opts |= AHCI_CMD_WRITE;
1525 opts |= AHCI_CMD_ATAPI | AHCI_CMD_PREFETCH;
1527 ahci_fill_cmd_slot(pp, qc->tag, opts);
1530 static void ahci_error_intr(struct ata_port *ap, u32 irq_stat)
1532 struct ahci_host_priv *hpriv = ap->host->private_data;
1533 struct ahci_port_priv *pp = ap->private_data;
1534 struct ata_eh_info *host_ehi = &ap->link.eh_info;
1535 struct ata_link *link = NULL;
1536 struct ata_queued_cmd *active_qc;
1537 struct ata_eh_info *active_ehi;
1540 /* determine active link */
1541 ata_port_for_each_link(link, ap)
1542 if (ata_link_active(link))
1547 active_qc = ata_qc_from_tag(ap, link->active_tag);
1548 active_ehi = &link->eh_info;
1550 /* record irq stat */
1551 ata_ehi_clear_desc(host_ehi);
1552 ata_ehi_push_desc(host_ehi, "irq_stat 0x%08x", irq_stat);
1554 /* AHCI needs SError cleared; otherwise, it might lock up */
1555 ahci_scr_read(ap, SCR_ERROR, &serror);
1556 ahci_scr_write(ap, SCR_ERROR, serror);
1557 host_ehi->serror |= serror;
1559 /* some controllers set IRQ_IF_ERR on device errors, ignore it */
1560 if (hpriv->flags & AHCI_HFLAG_IGN_IRQ_IF_ERR)
1561 irq_stat &= ~PORT_IRQ_IF_ERR;
1563 if (irq_stat & PORT_IRQ_TF_ERR) {
1564 /* If qc is active, charge it; otherwise, the active
1565 * link. There's no active qc on NCQ errors. It will
1566 * be determined by EH by reading log page 10h.
1569 active_qc->err_mask |= AC_ERR_DEV;
1571 active_ehi->err_mask |= AC_ERR_DEV;
1573 if (hpriv->flags & AHCI_HFLAG_IGN_SERR_INTERNAL)
1574 host_ehi->serror &= ~SERR_INTERNAL;
1577 if (irq_stat & PORT_IRQ_UNK_FIS) {
1578 u32 *unk = (u32 *)(pp->rx_fis + RX_FIS_UNK);
1580 active_ehi->err_mask |= AC_ERR_HSM;
1581 active_ehi->action |= ATA_EH_RESET;
1582 ata_ehi_push_desc(active_ehi,
1583 "unknown FIS %08x %08x %08x %08x" ,
1584 unk[0], unk[1], unk[2], unk[3]);
1587 if (ap->nr_pmp_links && (irq_stat & PORT_IRQ_BAD_PMP)) {
1588 active_ehi->err_mask |= AC_ERR_HSM;
1589 active_ehi->action |= ATA_EH_RESET;
1590 ata_ehi_push_desc(active_ehi, "incorrect PMP");
1593 if (irq_stat & (PORT_IRQ_HBUS_ERR | PORT_IRQ_HBUS_DATA_ERR)) {
1594 host_ehi->err_mask |= AC_ERR_HOST_BUS;
1595 host_ehi->action |= ATA_EH_RESET;
1596 ata_ehi_push_desc(host_ehi, "host bus error");
1599 if (irq_stat & PORT_IRQ_IF_ERR) {
1600 host_ehi->err_mask |= AC_ERR_ATA_BUS;
1601 host_ehi->action |= ATA_EH_RESET;
1602 ata_ehi_push_desc(host_ehi, "interface fatal error");
1605 if (irq_stat & (PORT_IRQ_CONNECT | PORT_IRQ_PHYRDY)) {
1606 ata_ehi_hotplugged(host_ehi);
1607 ata_ehi_push_desc(host_ehi, "%s",
1608 irq_stat & PORT_IRQ_CONNECT ?
1609 "connection status changed" : "PHY RDY changed");
1612 /* okay, let's hand over to EH */
1614 if (irq_stat & PORT_IRQ_FREEZE)
1615 ata_port_freeze(ap);
1620 static void ahci_port_intr(struct ata_port *ap)
1622 void __iomem *port_mmio = ap->ioaddr.cmd_addr;
1623 struct ata_eh_info *ehi = &ap->link.eh_info;
1624 struct ahci_port_priv *pp = ap->private_data;
1625 struct ahci_host_priv *hpriv = ap->host->private_data;
1626 int resetting = !!(ap->pflags & ATA_PFLAG_RESETTING);
1627 u32 status, qc_active;
1630 status = readl(port_mmio + PORT_IRQ_STAT);
1631 writel(status, port_mmio + PORT_IRQ_STAT);
1633 /* ignore BAD_PMP while resetting */
1634 if (unlikely(resetting))
1635 status &= ~PORT_IRQ_BAD_PMP;
1637 /* If we are getting PhyRdy, this is
1638 * just a power state change, we should
1639 * clear out this, plus the PhyRdy/Comm
1640 * Wake bits from Serror
1642 if ((hpriv->flags & AHCI_HFLAG_NO_HOTPLUG) &&
1643 (status & PORT_IRQ_PHYRDY)) {
1644 status &= ~PORT_IRQ_PHYRDY;
1645 ahci_scr_write(ap, SCR_ERROR, ((1 << 16) | (1 << 18)));
1648 if (unlikely(status & PORT_IRQ_ERROR)) {
1649 ahci_error_intr(ap, status);
1653 if (status & PORT_IRQ_SDB_FIS) {
1654 /* If SNotification is available, leave notification
1655 * handling to sata_async_notification(). If not,
1656 * emulate it by snooping SDB FIS RX area.
1658 * Snooping FIS RX area is probably cheaper than
1659 * poking SNotification but some constrollers which
1660 * implement SNotification, ICH9 for example, don't
1661 * store AN SDB FIS into receive area.
1663 if (hpriv->cap & HOST_CAP_SNTF)
1664 sata_async_notification(ap);
1666 /* If the 'N' bit in word 0 of the FIS is set,
1667 * we just received asynchronous notification.
1668 * Tell libata about it.
1670 const __le32 *f = pp->rx_fis + RX_FIS_SDB;
1671 u32 f0 = le32_to_cpu(f[0]);
1674 sata_async_notification(ap);
1678 /* pp->active_link is valid iff any command is in flight */
1679 if (ap->qc_active && pp->active_link->sactive)
1680 qc_active = readl(port_mmio + PORT_SCR_ACT);
1682 qc_active = readl(port_mmio + PORT_CMD_ISSUE);
1684 rc = ata_qc_complete_multiple(ap, qc_active, NULL);
1686 /* while resetting, invalid completions are expected */
1687 if (unlikely(rc < 0 && !resetting)) {
1688 ehi->err_mask |= AC_ERR_HSM;
1689 ehi->action |= ATA_EH_RESET;
1690 ata_port_freeze(ap);
1694 static irqreturn_t ahci_interrupt(int irq, void *dev_instance)
1696 struct ata_host *host = dev_instance;
1697 struct ahci_host_priv *hpriv;
1698 unsigned int i, handled = 0;
1700 u32 irq_stat, irq_ack = 0;
1704 hpriv = host->private_data;
1705 mmio = host->iomap[AHCI_PCI_BAR];
1707 /* sigh. 0xffffffff is a valid return from h/w */
1708 irq_stat = readl(mmio + HOST_IRQ_STAT);
1709 irq_stat &= hpriv->port_map;
1713 spin_lock(&host->lock);
1715 for (i = 0; i < host->n_ports; i++) {
1716 struct ata_port *ap;
1718 if (!(irq_stat & (1 << i)))
1721 ap = host->ports[i];
1724 VPRINTK("port %u\n", i);
1726 VPRINTK("port %u (no irq)\n", i);
1727 if (ata_ratelimit())
1728 dev_printk(KERN_WARNING, host->dev,
1729 "interrupt on disabled port %u\n", i);
1732 irq_ack |= (1 << i);
1736 writel(irq_ack, mmio + HOST_IRQ_STAT);
1740 spin_unlock(&host->lock);
1744 return IRQ_RETVAL(handled);
1747 static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc)
1749 struct ata_port *ap = qc->ap;
1750 void __iomem *port_mmio = ahci_port_base(ap);
1751 struct ahci_port_priv *pp = ap->private_data;
1753 /* Keep track of the currently active link. It will be used
1754 * in completion path to determine whether NCQ phase is in
1757 pp->active_link = qc->dev->link;
1759 if (qc->tf.protocol == ATA_PROT_NCQ)
1760 writel(1 << qc->tag, port_mmio + PORT_SCR_ACT);
1761 writel(1 << qc->tag, port_mmio + PORT_CMD_ISSUE);
1762 readl(port_mmio + PORT_CMD_ISSUE); /* flush */
1767 static void ahci_freeze(struct ata_port *ap)
1769 void __iomem *port_mmio = ahci_port_base(ap);
1772 writel(0, port_mmio + PORT_IRQ_MASK);
1775 static void ahci_thaw(struct ata_port *ap)
1777 void __iomem *mmio = ap->host->iomap[AHCI_PCI_BAR];
1778 void __iomem *port_mmio = ahci_port_base(ap);
1780 struct ahci_port_priv *pp = ap->private_data;
1783 tmp = readl(port_mmio + PORT_IRQ_STAT);
1784 writel(tmp, port_mmio + PORT_IRQ_STAT);
1785 writel(1 << ap->port_no, mmio + HOST_IRQ_STAT);
1787 /* turn IRQ back on */
1788 writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
1791 static void ahci_error_handler(struct ata_port *ap)
1793 if (!(ap->pflags & ATA_PFLAG_FROZEN)) {
1794 /* restart engine */
1795 ahci_stop_engine(ap);
1796 ahci_start_engine(ap);
1799 /* perform recovery */
1800 sata_pmp_do_eh(ap, ata_std_prereset, ahci_softreset,
1801 ahci_hardreset, ahci_postreset,
1802 sata_pmp_std_prereset, ahci_pmp_softreset,
1803 sata_pmp_std_hardreset, sata_pmp_std_postreset);
1806 static void ahci_vt8251_error_handler(struct ata_port *ap)
1808 if (!(ap->pflags & ATA_PFLAG_FROZEN)) {
1809 /* restart engine */
1810 ahci_stop_engine(ap);
1811 ahci_start_engine(ap);
1814 /* perform recovery */
1815 ata_do_eh(ap, ata_std_prereset, ahci_softreset, ahci_vt8251_hardreset,
1819 static void ahci_p5wdh_error_handler(struct ata_port *ap)
1821 if (!(ap->pflags & ATA_PFLAG_FROZEN)) {
1822 /* restart engine */
1823 ahci_stop_engine(ap);
1824 ahci_start_engine(ap);
1827 /* perform recovery */
1828 ata_do_eh(ap, ata_std_prereset, ahci_softreset, ahci_p5wdh_hardreset,
1832 static void ahci_post_internal_cmd(struct ata_queued_cmd *qc)
1834 struct ata_port *ap = qc->ap;
1836 /* make DMA engine forget about the failed command */
1837 if (qc->flags & ATA_QCFLAG_FAILED)
1838 ahci_kick_engine(ap, 1);
1841 static void ahci_pmp_attach(struct ata_port *ap)
1843 void __iomem *port_mmio = ahci_port_base(ap);
1844 struct ahci_port_priv *pp = ap->private_data;
1847 cmd = readl(port_mmio + PORT_CMD);
1848 cmd |= PORT_CMD_PMP;
1849 writel(cmd, port_mmio + PORT_CMD);
1851 pp->intr_mask |= PORT_IRQ_BAD_PMP;
1852 writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
1855 static void ahci_pmp_detach(struct ata_port *ap)
1857 void __iomem *port_mmio = ahci_port_base(ap);
1858 struct ahci_port_priv *pp = ap->private_data;
1861 cmd = readl(port_mmio + PORT_CMD);
1862 cmd &= ~PORT_CMD_PMP;
1863 writel(cmd, port_mmio + PORT_CMD);
1865 pp->intr_mask &= ~PORT_IRQ_BAD_PMP;
1866 writel(pp->intr_mask, port_mmio + PORT_IRQ_MASK);
1869 static int ahci_port_resume(struct ata_port *ap)
1872 ahci_start_port(ap);
1874 if (ap->nr_pmp_links)
1875 ahci_pmp_attach(ap);
1877 ahci_pmp_detach(ap);
1883 static int ahci_port_suspend(struct ata_port *ap, pm_message_t mesg)
1885 const char *emsg = NULL;
1888 rc = ahci_deinit_port(ap, &emsg);
1890 ahci_power_down(ap);
1892 ata_port_printk(ap, KERN_ERR, "%s (%d)\n", emsg, rc);
1893 ahci_start_port(ap);
1899 static int ahci_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
1901 struct ata_host *host = dev_get_drvdata(&pdev->dev);
1902 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
1905 if (mesg.event & PM_EVENT_SLEEP) {
1906 /* AHCI spec rev1.1 section 8.3.3:
1907 * Software must disable interrupts prior to requesting a
1908 * transition of the HBA to D3 state.
1910 ctl = readl(mmio + HOST_CTL);
1911 ctl &= ~HOST_IRQ_EN;
1912 writel(ctl, mmio + HOST_CTL);
1913 readl(mmio + HOST_CTL); /* flush */
1916 return ata_pci_device_suspend(pdev, mesg);
1919 static int ahci_pci_device_resume(struct pci_dev *pdev)
1921 struct ata_host *host = dev_get_drvdata(&pdev->dev);
1924 rc = ata_pci_device_do_resume(pdev);
1928 if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
1929 rc = ahci_reset_controller(host);
1933 ahci_init_controller(host);
1936 ata_host_resume(host);
1942 static int ahci_port_start(struct ata_port *ap)
1944 struct device *dev = ap->host->dev;
1945 struct ahci_port_priv *pp;
1949 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
1953 mem = dmam_alloc_coherent(dev, AHCI_PORT_PRIV_DMA_SZ, &mem_dma,
1957 memset(mem, 0, AHCI_PORT_PRIV_DMA_SZ);
1960 * First item in chunk of DMA memory: 32-slot command table,
1961 * 32 bytes each in size
1964 pp->cmd_slot_dma = mem_dma;
1966 mem += AHCI_CMD_SLOT_SZ;
1967 mem_dma += AHCI_CMD_SLOT_SZ;
1970 * Second item: Received-FIS area
1973 pp->rx_fis_dma = mem_dma;
1975 mem += AHCI_RX_FIS_SZ;
1976 mem_dma += AHCI_RX_FIS_SZ;
1979 * Third item: data area for storing a single command
1980 * and its scatter-gather table
1983 pp->cmd_tbl_dma = mem_dma;
1986 * Save off initial list of interrupts to be enabled.
1987 * This could be changed later
1989 pp->intr_mask = DEF_PORT_IRQ;
1991 ap->private_data = pp;
1993 /* engage engines, captain */
1994 return ahci_port_resume(ap);
1997 static void ahci_port_stop(struct ata_port *ap)
1999 const char *emsg = NULL;
2002 /* de-initialize port */
2003 rc = ahci_deinit_port(ap, &emsg);
2005 ata_port_printk(ap, KERN_WARNING, "%s (%d)\n", emsg, rc);
2008 static int ahci_configure_dma_masks(struct pci_dev *pdev, int using_dac)
2013 !pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
2014 rc = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
2016 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
2018 dev_printk(KERN_ERR, &pdev->dev,
2019 "64-bit DMA enable failed\n");
2024 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
2026 dev_printk(KERN_ERR, &pdev->dev,
2027 "32-bit DMA enable failed\n");
2030 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
2032 dev_printk(KERN_ERR, &pdev->dev,
2033 "32-bit consistent DMA enable failed\n");
2040 static void ahci_print_info(struct ata_host *host)
2042 struct ahci_host_priv *hpriv = host->private_data;
2043 struct pci_dev *pdev = to_pci_dev(host->dev);
2044 void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
2045 u32 vers, cap, impl, speed;
2046 const char *speed_s;
2050 vers = readl(mmio + HOST_VERSION);
2052 impl = hpriv->port_map;
2054 speed = (cap >> 20) & 0xf;
2057 else if (speed == 2)
2062 pci_read_config_word(pdev, 0x0a, &cc);
2063 if (cc == PCI_CLASS_STORAGE_IDE)
2065 else if (cc == PCI_CLASS_STORAGE_SATA)
2067 else if (cc == PCI_CLASS_STORAGE_RAID)
2072 dev_printk(KERN_INFO, &pdev->dev,
2073 "AHCI %02x%02x.%02x%02x "
2074 "%u slots %u ports %s Gbps 0x%x impl %s mode\n"
2077 (vers >> 24) & 0xff,
2078 (vers >> 16) & 0xff,
2082 ((cap >> 8) & 0x1f) + 1,
2088 dev_printk(KERN_INFO, &pdev->dev,
2094 cap & (1 << 31) ? "64bit " : "",
2095 cap & (1 << 30) ? "ncq " : "",
2096 cap & (1 << 29) ? "sntf " : "",
2097 cap & (1 << 28) ? "ilck " : "",
2098 cap & (1 << 27) ? "stag " : "",
2099 cap & (1 << 26) ? "pm " : "",
2100 cap & (1 << 25) ? "led " : "",
2102 cap & (1 << 24) ? "clo " : "",
2103 cap & (1 << 19) ? "nz " : "",
2104 cap & (1 << 18) ? "only " : "",
2105 cap & (1 << 17) ? "pmp " : "",
2106 cap & (1 << 15) ? "pio " : "",
2107 cap & (1 << 14) ? "slum " : "",
2108 cap & (1 << 13) ? "part " : ""
2112 /* On ASUS P5W DH Deluxe, the second port of PCI device 00:1f.2 is
2113 * hardwired to on-board SIMG 4726. The chipset is ICH8 and doesn't
2114 * support PMP and the 4726 either directly exports the device
2115 * attached to the first downstream port or acts as a hardware storage
2116 * controller and emulate a single ATA device (can be RAID 0/1 or some
2117 * other configuration).
2119 * When there's no device attached to the first downstream port of the
2120 * 4726, "Config Disk" appears, which is a pseudo ATA device to
2121 * configure the 4726. However, ATA emulation of the device is very
2122 * lame. It doesn't send signature D2H Reg FIS after the initial
2123 * hardreset, pukes on SRST w/ PMP==0 and has bunch of other issues.
2125 * The following function works around the problem by always using
2126 * hardreset on the port and not depending on receiving signature FIS
2127 * afterward. If signature FIS isn't received soon, ATA class is
2128 * assumed without follow-up softreset.
2130 static void ahci_p5wdh_workaround(struct ata_host *host)
2132 static struct dmi_system_id sysids[] = {
2134 .ident = "P5W DH Deluxe",
2136 DMI_MATCH(DMI_SYS_VENDOR,
2137 "ASUSTEK COMPUTER INC"),
2138 DMI_MATCH(DMI_PRODUCT_NAME, "P5W DH Deluxe"),
2143 struct pci_dev *pdev = to_pci_dev(host->dev);
2145 if (pdev->bus->number == 0 && pdev->devfn == PCI_DEVFN(0x1f, 2) &&
2146 dmi_check_system(sysids)) {
2147 struct ata_port *ap = host->ports[1];
2149 dev_printk(KERN_INFO, &pdev->dev, "enabling ASUS P5W DH "
2150 "Deluxe on-board SIMG4726 workaround\n");
2152 ap->ops = &ahci_p5wdh_ops;
2153 ap->link.flags |= ATA_LFLAG_NO_SRST | ATA_LFLAG_ASSUME_ATA;
2157 static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
2159 static int printed_version;
2160 struct ata_port_info pi = ahci_port_info[ent->driver_data];
2161 const struct ata_port_info *ppi[] = { &pi, NULL };
2162 struct device *dev = &pdev->dev;
2163 struct ahci_host_priv *hpriv;
2164 struct ata_host *host;
2169 WARN_ON(ATA_MAX_QUEUE > AHCI_MAX_CMDS);
2171 if (!printed_version++)
2172 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
2174 /* acquire resources */
2175 rc = pcim_enable_device(pdev);
2179 /* AHCI controllers often implement SFF compatible interface.
2180 * Grab all PCI BARs just in case.
2182 rc = pcim_iomap_regions_request_all(pdev, 1 << AHCI_PCI_BAR, DRV_NAME);
2184 pcim_pin_device(pdev);
2188 if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
2189 (pdev->device == 0x2652 || pdev->device == 0x2653)) {
2192 /* ICH6s share the same PCI ID for both piix and ahci
2193 * modes. Enabling ahci mode while MAP indicates
2194 * combined mode is a bad idea. Yield to ata_piix.
2196 pci_read_config_byte(pdev, ICH_MAP, &map);
2198 dev_printk(KERN_INFO, &pdev->dev, "controller is in "
2199 "combined mode, can't enable AHCI mode\n");
2204 hpriv = devm_kzalloc(dev, sizeof(*hpriv), GFP_KERNEL);
2207 hpriv->flags |= (unsigned long)pi.private_data;
2209 if ((hpriv->flags & AHCI_HFLAG_NO_MSI) || pci_enable_msi(pdev))
2212 /* save initial config */
2213 ahci_save_initial_config(pdev, hpriv);
2216 if (hpriv->cap & HOST_CAP_NCQ)
2217 pi.flags |= ATA_FLAG_NCQ;
2219 if (hpriv->cap & HOST_CAP_PMP)
2220 pi.flags |= ATA_FLAG_PMP;
2222 /* CAP.NP sometimes indicate the index of the last enabled
2223 * port, at other times, that of the last possible port, so
2224 * determining the maximum port number requires looking at
2225 * both CAP.NP and port_map.
2227 n_ports = max(ahci_nr_ports(hpriv->cap), fls(hpriv->port_map));
2229 host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
2232 host->iomap = pcim_iomap_table(pdev);
2233 host->private_data = hpriv;
2235 for (i = 0; i < host->n_ports; i++) {
2236 struct ata_port *ap = host->ports[i];
2237 void __iomem *port_mmio = ahci_port_base(ap);
2239 ata_port_pbar_desc(ap, AHCI_PCI_BAR, -1, "abar");
2240 ata_port_pbar_desc(ap, AHCI_PCI_BAR,
2241 0x100 + ap->port_no * 0x80, "port");
2243 /* set initial link pm policy */
2244 ap->pm_policy = NOT_AVAILABLE;
2246 /* standard SATA port setup */
2247 if (hpriv->port_map & (1 << i))
2248 ap->ioaddr.cmd_addr = port_mmio;
2250 /* disabled/not-implemented port */
2252 ap->ops = &ata_dummy_port_ops;
2255 /* apply workaround for ASUS P5W DH Deluxe mainboard */
2256 ahci_p5wdh_workaround(host);
2258 /* initialize adapter */
2259 rc = ahci_configure_dma_masks(pdev, hpriv->cap & HOST_CAP_64);
2263 rc = ahci_reset_controller(host);
2267 ahci_init_controller(host);
2268 ahci_print_info(host);
2270 pci_set_master(pdev);
2271 return ata_host_activate(host, pdev->irq, ahci_interrupt, IRQF_SHARED,
2275 static int __init ahci_init(void)
2277 return pci_register_driver(&ahci_pci_driver);
2280 static void __exit ahci_exit(void)
2282 pci_unregister_driver(&ahci_pci_driver);
2286 MODULE_AUTHOR("Jeff Garzik");
2287 MODULE_DESCRIPTION("AHCI SATA low-level driver");
2288 MODULE_LICENSE("GPL");
2289 MODULE_DEVICE_TABLE(pci, ahci_pci_tbl);
2290 MODULE_VERSION(DRV_VERSION);
2292 module_init(ahci_init);
2293 module_exit(ahci_exit);