xref: /openbmc/linux/drivers/ata/ahci.c (revision 0b003749)
1 /*
2  *  ahci.c - AHCI SATA support
3  *
4  *  Maintained by:  Tejun Heo <tj@kernel.org>
5  *    		    Please ALWAYS copy linux-ide@vger.kernel.org
6  *		    on emails.
7  *
8  *  Copyright 2004-2005 Red Hat, Inc.
9  *
10  *
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)
14  *  any later version.
15  *
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.
20  *
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.
24  *
25  *
26  * libata documentation is available via 'make {ps|pdf}docs',
27  * as Documentation/driver-api/libata.rst
28  *
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
32  *
33  */
34 
35 #include <linux/kernel.h>
36 #include <linux/module.h>
37 #include <linux/pci.h>
38 #include <linux/blkdev.h>
39 #include <linux/delay.h>
40 #include <linux/interrupt.h>
41 #include <linux/dma-mapping.h>
42 #include <linux/device.h>
43 #include <linux/dmi.h>
44 #include <linux/gfp.h>
45 #include <linux/msi.h>
46 #include <scsi/scsi_host.h>
47 #include <scsi/scsi_cmnd.h>
48 #include <linux/libata.h>
49 #include <linux/ahci-remap.h>
50 #include <linux/io-64-nonatomic-lo-hi.h>
51 #include "ahci.h"
52 
53 #define DRV_NAME	"ahci"
54 #define DRV_VERSION	"3.0"
55 
56 enum {
57 	AHCI_PCI_BAR_STA2X11	= 0,
58 	AHCI_PCI_BAR_CAVIUM	= 0,
59 	AHCI_PCI_BAR_ENMOTUS	= 2,
60 	AHCI_PCI_BAR_CAVIUM_GEN5	= 4,
61 	AHCI_PCI_BAR_STANDARD	= 5,
62 };
63 
64 enum board_ids {
65 	/* board IDs by feature in alphabetical order */
66 	board_ahci,
67 	board_ahci_ign_iferr,
68 	board_ahci_mobile,
69 	board_ahci_nomsi,
70 	board_ahci_noncq,
71 	board_ahci_nosntf,
72 	board_ahci_yes_fbs,
73 
74 	/* board IDs for specific chipsets in alphabetical order */
75 	board_ahci_avn,
76 	board_ahci_mcp65,
77 	board_ahci_mcp77,
78 	board_ahci_mcp89,
79 	board_ahci_mv,
80 	board_ahci_sb600,
81 	board_ahci_sb700,	/* for SB700 and SB800 */
82 	board_ahci_vt8251,
83 
84 	/* aliases */
85 	board_ahci_mcp_linux	= board_ahci_mcp65,
86 	board_ahci_mcp67	= board_ahci_mcp65,
87 	board_ahci_mcp73	= board_ahci_mcp65,
88 	board_ahci_mcp79	= board_ahci_mcp77,
89 };
90 
91 static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
92 static void ahci_remove_one(struct pci_dev *dev);
93 static int ahci_vt8251_hardreset(struct ata_link *link, unsigned int *class,
94 				 unsigned long deadline);
95 static int ahci_avn_hardreset(struct ata_link *link, unsigned int *class,
96 			      unsigned long deadline);
97 static void ahci_mcp89_apple_enable(struct pci_dev *pdev);
98 static bool is_mcp89_apple(struct pci_dev *pdev);
99 static int ahci_p5wdh_hardreset(struct ata_link *link, unsigned int *class,
100 				unsigned long deadline);
101 #ifdef CONFIG_PM
102 static int ahci_pci_device_runtime_suspend(struct device *dev);
103 static int ahci_pci_device_runtime_resume(struct device *dev);
104 #ifdef CONFIG_PM_SLEEP
105 static int ahci_pci_device_suspend(struct device *dev);
106 static int ahci_pci_device_resume(struct device *dev);
107 #endif
108 #endif /* CONFIG_PM */
109 
110 static struct scsi_host_template ahci_sht = {
111 	AHCI_SHT("ahci"),
112 };
113 
114 static struct ata_port_operations ahci_vt8251_ops = {
115 	.inherits		= &ahci_ops,
116 	.hardreset		= ahci_vt8251_hardreset,
117 };
118 
119 static struct ata_port_operations ahci_p5wdh_ops = {
120 	.inherits		= &ahci_ops,
121 	.hardreset		= ahci_p5wdh_hardreset,
122 };
123 
124 static struct ata_port_operations ahci_avn_ops = {
125 	.inherits		= &ahci_ops,
126 	.hardreset		= ahci_avn_hardreset,
127 };
128 
129 static const struct ata_port_info ahci_port_info[] = {
130 	/* by features */
131 	[board_ahci] = {
132 		.flags		= AHCI_FLAG_COMMON,
133 		.pio_mask	= ATA_PIO4,
134 		.udma_mask	= ATA_UDMA6,
135 		.port_ops	= &ahci_ops,
136 	},
137 	[board_ahci_ign_iferr] = {
138 		AHCI_HFLAGS	(AHCI_HFLAG_IGN_IRQ_IF_ERR),
139 		.flags		= AHCI_FLAG_COMMON,
140 		.pio_mask	= ATA_PIO4,
141 		.udma_mask	= ATA_UDMA6,
142 		.port_ops	= &ahci_ops,
143 	},
144 	[board_ahci_mobile] = {
145 		AHCI_HFLAGS	(AHCI_HFLAG_IS_MOBILE),
146 		.flags		= AHCI_FLAG_COMMON,
147 		.pio_mask	= ATA_PIO4,
148 		.udma_mask	= ATA_UDMA6,
149 		.port_ops	= &ahci_ops,
150 	},
151 	[board_ahci_nomsi] = {
152 		AHCI_HFLAGS	(AHCI_HFLAG_NO_MSI),
153 		.flags		= AHCI_FLAG_COMMON,
154 		.pio_mask	= ATA_PIO4,
155 		.udma_mask	= ATA_UDMA6,
156 		.port_ops	= &ahci_ops,
157 	},
158 	[board_ahci_noncq] = {
159 		AHCI_HFLAGS	(AHCI_HFLAG_NO_NCQ),
160 		.flags		= AHCI_FLAG_COMMON,
161 		.pio_mask	= ATA_PIO4,
162 		.udma_mask	= ATA_UDMA6,
163 		.port_ops	= &ahci_ops,
164 	},
165 	[board_ahci_nosntf] = {
166 		AHCI_HFLAGS	(AHCI_HFLAG_NO_SNTF),
167 		.flags		= AHCI_FLAG_COMMON,
168 		.pio_mask	= ATA_PIO4,
169 		.udma_mask	= ATA_UDMA6,
170 		.port_ops	= &ahci_ops,
171 	},
172 	[board_ahci_yes_fbs] = {
173 		AHCI_HFLAGS	(AHCI_HFLAG_YES_FBS),
174 		.flags		= AHCI_FLAG_COMMON,
175 		.pio_mask	= ATA_PIO4,
176 		.udma_mask	= ATA_UDMA6,
177 		.port_ops	= &ahci_ops,
178 	},
179 	/* by chipsets */
180 	[board_ahci_avn] = {
181 		.flags		= AHCI_FLAG_COMMON,
182 		.pio_mask	= ATA_PIO4,
183 		.udma_mask	= ATA_UDMA6,
184 		.port_ops	= &ahci_avn_ops,
185 	},
186 	[board_ahci_mcp65] = {
187 		AHCI_HFLAGS	(AHCI_HFLAG_NO_FPDMA_AA | AHCI_HFLAG_NO_PMP |
188 				 AHCI_HFLAG_YES_NCQ),
189 		.flags		= AHCI_FLAG_COMMON | ATA_FLAG_NO_DIPM,
190 		.pio_mask	= ATA_PIO4,
191 		.udma_mask	= ATA_UDMA6,
192 		.port_ops	= &ahci_ops,
193 	},
194 	[board_ahci_mcp77] = {
195 		AHCI_HFLAGS	(AHCI_HFLAG_NO_FPDMA_AA | AHCI_HFLAG_NO_PMP),
196 		.flags		= AHCI_FLAG_COMMON,
197 		.pio_mask	= ATA_PIO4,
198 		.udma_mask	= ATA_UDMA6,
199 		.port_ops	= &ahci_ops,
200 	},
201 	[board_ahci_mcp89] = {
202 		AHCI_HFLAGS	(AHCI_HFLAG_NO_FPDMA_AA),
203 		.flags		= AHCI_FLAG_COMMON,
204 		.pio_mask	= ATA_PIO4,
205 		.udma_mask	= ATA_UDMA6,
206 		.port_ops	= &ahci_ops,
207 	},
208 	[board_ahci_mv] = {
209 		AHCI_HFLAGS	(AHCI_HFLAG_NO_NCQ | AHCI_HFLAG_NO_MSI |
210 				 AHCI_HFLAG_MV_PATA | AHCI_HFLAG_NO_PMP),
211 		.flags		= ATA_FLAG_SATA | ATA_FLAG_PIO_DMA,
212 		.pio_mask	= ATA_PIO4,
213 		.udma_mask	= ATA_UDMA6,
214 		.port_ops	= &ahci_ops,
215 	},
216 	[board_ahci_sb600] = {
217 		AHCI_HFLAGS	(AHCI_HFLAG_IGN_SERR_INTERNAL |
218 				 AHCI_HFLAG_NO_MSI | AHCI_HFLAG_SECT255 |
219 				 AHCI_HFLAG_32BIT_ONLY),
220 		.flags		= AHCI_FLAG_COMMON,
221 		.pio_mask	= ATA_PIO4,
222 		.udma_mask	= ATA_UDMA6,
223 		.port_ops	= &ahci_pmp_retry_srst_ops,
224 	},
225 	[board_ahci_sb700] = {	/* for SB700 and SB800 */
226 		AHCI_HFLAGS	(AHCI_HFLAG_IGN_SERR_INTERNAL),
227 		.flags		= AHCI_FLAG_COMMON,
228 		.pio_mask	= ATA_PIO4,
229 		.udma_mask	= ATA_UDMA6,
230 		.port_ops	= &ahci_pmp_retry_srst_ops,
231 	},
232 	[board_ahci_vt8251] = {
233 		AHCI_HFLAGS	(AHCI_HFLAG_NO_NCQ | AHCI_HFLAG_NO_PMP),
234 		.flags		= AHCI_FLAG_COMMON,
235 		.pio_mask	= ATA_PIO4,
236 		.udma_mask	= ATA_UDMA6,
237 		.port_ops	= &ahci_vt8251_ops,
238 	},
239 };
240 
241 static const struct pci_device_id ahci_pci_tbl[] = {
242 	/* Intel */
243 	{ PCI_VDEVICE(INTEL, 0x2652), board_ahci }, /* ICH6 */
244 	{ PCI_VDEVICE(INTEL, 0x2653), board_ahci }, /* ICH6M */
245 	{ PCI_VDEVICE(INTEL, 0x27c1), board_ahci }, /* ICH7 */
246 	{ PCI_VDEVICE(INTEL, 0x27c5), board_ahci }, /* ICH7M */
247 	{ PCI_VDEVICE(INTEL, 0x27c3), board_ahci }, /* ICH7R */
248 	{ PCI_VDEVICE(AL, 0x5288), board_ahci_ign_iferr }, /* ULi M5288 */
249 	{ PCI_VDEVICE(INTEL, 0x2681), board_ahci }, /* ESB2 */
250 	{ PCI_VDEVICE(INTEL, 0x2682), board_ahci }, /* ESB2 */
251 	{ PCI_VDEVICE(INTEL, 0x2683), board_ahci }, /* ESB2 */
252 	{ PCI_VDEVICE(INTEL, 0x27c6), board_ahci }, /* ICH7-M DH */
253 	{ PCI_VDEVICE(INTEL, 0x2821), board_ahci }, /* ICH8 */
254 	{ PCI_VDEVICE(INTEL, 0x2822), board_ahci_nosntf }, /* ICH8 */
255 	{ PCI_VDEVICE(INTEL, 0x2824), board_ahci }, /* ICH8 */
256 	{ PCI_VDEVICE(INTEL, 0x2829), board_ahci }, /* ICH8M */
257 	{ PCI_VDEVICE(INTEL, 0x282a), board_ahci }, /* ICH8M */
258 	{ PCI_VDEVICE(INTEL, 0x2922), board_ahci }, /* ICH9 */
259 	{ PCI_VDEVICE(INTEL, 0x2923), board_ahci }, /* ICH9 */
260 	{ PCI_VDEVICE(INTEL, 0x2924), board_ahci }, /* ICH9 */
261 	{ PCI_VDEVICE(INTEL, 0x2925), board_ahci }, /* ICH9 */
262 	{ PCI_VDEVICE(INTEL, 0x2927), board_ahci }, /* ICH9 */
263 	{ PCI_VDEVICE(INTEL, 0x2929), board_ahci_mobile }, /* ICH9M */
264 	{ PCI_VDEVICE(INTEL, 0x292a), board_ahci_mobile }, /* ICH9M */
265 	{ PCI_VDEVICE(INTEL, 0x292b), board_ahci_mobile }, /* ICH9M */
266 	{ PCI_VDEVICE(INTEL, 0x292c), board_ahci_mobile }, /* ICH9M */
267 	{ PCI_VDEVICE(INTEL, 0x292f), board_ahci_mobile }, /* ICH9M */
268 	{ PCI_VDEVICE(INTEL, 0x294d), board_ahci }, /* ICH9 */
269 	{ PCI_VDEVICE(INTEL, 0x294e), board_ahci_mobile }, /* ICH9M */
270 	{ PCI_VDEVICE(INTEL, 0x502a), board_ahci }, /* Tolapai */
271 	{ PCI_VDEVICE(INTEL, 0x502b), board_ahci }, /* Tolapai */
272 	{ PCI_VDEVICE(INTEL, 0x3a05), board_ahci }, /* ICH10 */
273 	{ PCI_VDEVICE(INTEL, 0x3a22), board_ahci }, /* ICH10 */
274 	{ PCI_VDEVICE(INTEL, 0x3a25), board_ahci }, /* ICH10 */
275 	{ PCI_VDEVICE(INTEL, 0x3b22), board_ahci }, /* PCH AHCI */
276 	{ PCI_VDEVICE(INTEL, 0x3b23), board_ahci }, /* PCH AHCI */
277 	{ PCI_VDEVICE(INTEL, 0x3b24), board_ahci }, /* PCH RAID */
278 	{ PCI_VDEVICE(INTEL, 0x3b25), board_ahci }, /* PCH RAID */
279 	{ PCI_VDEVICE(INTEL, 0x3b29), board_ahci_mobile }, /* PCH M AHCI */
280 	{ PCI_VDEVICE(INTEL, 0x3b2b), board_ahci }, /* PCH RAID */
281 	{ PCI_VDEVICE(INTEL, 0x3b2c), board_ahci_mobile }, /* PCH M RAID */
282 	{ PCI_VDEVICE(INTEL, 0x3b2f), board_ahci }, /* PCH AHCI */
283 	{ PCI_VDEVICE(INTEL, 0x19b0), board_ahci }, /* DNV AHCI */
284 	{ PCI_VDEVICE(INTEL, 0x19b1), board_ahci }, /* DNV AHCI */
285 	{ PCI_VDEVICE(INTEL, 0x19b2), board_ahci }, /* DNV AHCI */
286 	{ PCI_VDEVICE(INTEL, 0x19b3), board_ahci }, /* DNV AHCI */
287 	{ PCI_VDEVICE(INTEL, 0x19b4), board_ahci }, /* DNV AHCI */
288 	{ PCI_VDEVICE(INTEL, 0x19b5), board_ahci }, /* DNV AHCI */
289 	{ PCI_VDEVICE(INTEL, 0x19b6), board_ahci }, /* DNV AHCI */
290 	{ PCI_VDEVICE(INTEL, 0x19b7), board_ahci }, /* DNV AHCI */
291 	{ PCI_VDEVICE(INTEL, 0x19bE), board_ahci }, /* DNV AHCI */
292 	{ PCI_VDEVICE(INTEL, 0x19bF), board_ahci }, /* DNV AHCI */
293 	{ PCI_VDEVICE(INTEL, 0x19c0), board_ahci }, /* DNV AHCI */
294 	{ PCI_VDEVICE(INTEL, 0x19c1), board_ahci }, /* DNV AHCI */
295 	{ PCI_VDEVICE(INTEL, 0x19c2), board_ahci }, /* DNV AHCI */
296 	{ PCI_VDEVICE(INTEL, 0x19c3), board_ahci }, /* DNV AHCI */
297 	{ PCI_VDEVICE(INTEL, 0x19c4), board_ahci }, /* DNV AHCI */
298 	{ PCI_VDEVICE(INTEL, 0x19c5), board_ahci }, /* DNV AHCI */
299 	{ PCI_VDEVICE(INTEL, 0x19c6), board_ahci }, /* DNV AHCI */
300 	{ PCI_VDEVICE(INTEL, 0x19c7), board_ahci }, /* DNV AHCI */
301 	{ PCI_VDEVICE(INTEL, 0x19cE), board_ahci }, /* DNV AHCI */
302 	{ PCI_VDEVICE(INTEL, 0x19cF), board_ahci }, /* DNV AHCI */
303 	{ PCI_VDEVICE(INTEL, 0x1c02), board_ahci }, /* CPT AHCI */
304 	{ PCI_VDEVICE(INTEL, 0x1c03), board_ahci_mobile }, /* CPT M AHCI */
305 	{ PCI_VDEVICE(INTEL, 0x1c04), board_ahci }, /* CPT RAID */
306 	{ PCI_VDEVICE(INTEL, 0x1c05), board_ahci_mobile }, /* CPT M RAID */
307 	{ PCI_VDEVICE(INTEL, 0x1c06), board_ahci }, /* CPT RAID */
308 	{ PCI_VDEVICE(INTEL, 0x1c07), board_ahci }, /* CPT RAID */
309 	{ PCI_VDEVICE(INTEL, 0x1d02), board_ahci }, /* PBG AHCI */
310 	{ PCI_VDEVICE(INTEL, 0x1d04), board_ahci }, /* PBG RAID */
311 	{ PCI_VDEVICE(INTEL, 0x1d06), board_ahci }, /* PBG RAID */
312 	{ PCI_VDEVICE(INTEL, 0x2826), board_ahci }, /* PBG RAID */
313 	{ PCI_VDEVICE(INTEL, 0x2323), board_ahci }, /* DH89xxCC AHCI */
314 	{ PCI_VDEVICE(INTEL, 0x1e02), board_ahci }, /* Panther Point AHCI */
315 	{ PCI_VDEVICE(INTEL, 0x1e03), board_ahci_mobile }, /* Panther M AHCI */
316 	{ PCI_VDEVICE(INTEL, 0x1e04), board_ahci }, /* Panther Point RAID */
317 	{ PCI_VDEVICE(INTEL, 0x1e05), board_ahci }, /* Panther Point RAID */
318 	{ PCI_VDEVICE(INTEL, 0x1e06), board_ahci }, /* Panther Point RAID */
319 	{ PCI_VDEVICE(INTEL, 0x1e07), board_ahci_mobile }, /* Panther M RAID */
320 	{ PCI_VDEVICE(INTEL, 0x1e0e), board_ahci }, /* Panther Point RAID */
321 	{ PCI_VDEVICE(INTEL, 0x8c02), board_ahci }, /* Lynx Point AHCI */
322 	{ PCI_VDEVICE(INTEL, 0x8c03), board_ahci_mobile }, /* Lynx M AHCI */
323 	{ PCI_VDEVICE(INTEL, 0x8c04), board_ahci }, /* Lynx Point RAID */
324 	{ PCI_VDEVICE(INTEL, 0x8c05), board_ahci_mobile }, /* Lynx M RAID */
325 	{ PCI_VDEVICE(INTEL, 0x8c06), board_ahci }, /* Lynx Point RAID */
326 	{ PCI_VDEVICE(INTEL, 0x8c07), board_ahci_mobile }, /* Lynx M RAID */
327 	{ PCI_VDEVICE(INTEL, 0x8c0e), board_ahci }, /* Lynx Point RAID */
328 	{ PCI_VDEVICE(INTEL, 0x8c0f), board_ahci_mobile }, /* Lynx M RAID */
329 	{ PCI_VDEVICE(INTEL, 0x9c02), board_ahci_mobile }, /* Lynx LP AHCI */
330 	{ PCI_VDEVICE(INTEL, 0x9c03), board_ahci_mobile }, /* Lynx LP AHCI */
331 	{ PCI_VDEVICE(INTEL, 0x9c04), board_ahci_mobile }, /* Lynx LP RAID */
332 	{ PCI_VDEVICE(INTEL, 0x9c05), board_ahci_mobile }, /* Lynx LP RAID */
333 	{ PCI_VDEVICE(INTEL, 0x9c06), board_ahci_mobile }, /* Lynx LP RAID */
334 	{ PCI_VDEVICE(INTEL, 0x9c07), board_ahci_mobile }, /* Lynx LP RAID */
335 	{ PCI_VDEVICE(INTEL, 0x9c0e), board_ahci_mobile }, /* Lynx LP RAID */
336 	{ PCI_VDEVICE(INTEL, 0x9c0f), board_ahci_mobile }, /* Lynx LP RAID */
337 	{ PCI_VDEVICE(INTEL, 0x9dd3), board_ahci_mobile }, /* Cannon Lake PCH-LP AHCI */
338 	{ PCI_VDEVICE(INTEL, 0x1f22), board_ahci }, /* Avoton AHCI */
339 	{ PCI_VDEVICE(INTEL, 0x1f23), board_ahci }, /* Avoton AHCI */
340 	{ PCI_VDEVICE(INTEL, 0x1f24), board_ahci }, /* Avoton RAID */
341 	{ PCI_VDEVICE(INTEL, 0x1f25), board_ahci }, /* Avoton RAID */
342 	{ PCI_VDEVICE(INTEL, 0x1f26), board_ahci }, /* Avoton RAID */
343 	{ PCI_VDEVICE(INTEL, 0x1f27), board_ahci }, /* Avoton RAID */
344 	{ PCI_VDEVICE(INTEL, 0x1f2e), board_ahci }, /* Avoton RAID */
345 	{ PCI_VDEVICE(INTEL, 0x1f2f), board_ahci }, /* Avoton RAID */
346 	{ PCI_VDEVICE(INTEL, 0x1f32), board_ahci_avn }, /* Avoton AHCI */
347 	{ PCI_VDEVICE(INTEL, 0x1f33), board_ahci_avn }, /* Avoton AHCI */
348 	{ PCI_VDEVICE(INTEL, 0x1f34), board_ahci_avn }, /* Avoton RAID */
349 	{ PCI_VDEVICE(INTEL, 0x1f35), board_ahci_avn }, /* Avoton RAID */
350 	{ PCI_VDEVICE(INTEL, 0x1f36), board_ahci_avn }, /* Avoton RAID */
351 	{ PCI_VDEVICE(INTEL, 0x1f37), board_ahci_avn }, /* Avoton RAID */
352 	{ PCI_VDEVICE(INTEL, 0x1f3e), board_ahci_avn }, /* Avoton RAID */
353 	{ PCI_VDEVICE(INTEL, 0x1f3f), board_ahci_avn }, /* Avoton RAID */
354 	{ PCI_VDEVICE(INTEL, 0x2823), board_ahci }, /* Wellsburg RAID */
355 	{ PCI_VDEVICE(INTEL, 0x2827), board_ahci }, /* Wellsburg RAID */
356 	{ PCI_VDEVICE(INTEL, 0x8d02), board_ahci }, /* Wellsburg AHCI */
357 	{ PCI_VDEVICE(INTEL, 0x8d04), board_ahci }, /* Wellsburg RAID */
358 	{ PCI_VDEVICE(INTEL, 0x8d06), board_ahci }, /* Wellsburg RAID */
359 	{ PCI_VDEVICE(INTEL, 0x8d0e), board_ahci }, /* Wellsburg RAID */
360 	{ PCI_VDEVICE(INTEL, 0x8d62), board_ahci }, /* Wellsburg AHCI */
361 	{ PCI_VDEVICE(INTEL, 0x8d64), board_ahci }, /* Wellsburg RAID */
362 	{ PCI_VDEVICE(INTEL, 0x8d66), board_ahci }, /* Wellsburg RAID */
363 	{ PCI_VDEVICE(INTEL, 0x8d6e), board_ahci }, /* Wellsburg RAID */
364 	{ PCI_VDEVICE(INTEL, 0x23a3), board_ahci }, /* Coleto Creek AHCI */
365 	{ PCI_VDEVICE(INTEL, 0x9c83), board_ahci_mobile }, /* Wildcat LP AHCI */
366 	{ PCI_VDEVICE(INTEL, 0x9c85), board_ahci_mobile }, /* Wildcat LP RAID */
367 	{ PCI_VDEVICE(INTEL, 0x9c87), board_ahci_mobile }, /* Wildcat LP RAID */
368 	{ PCI_VDEVICE(INTEL, 0x9c8f), board_ahci_mobile }, /* Wildcat LP RAID */
369 	{ PCI_VDEVICE(INTEL, 0x8c82), board_ahci }, /* 9 Series AHCI */
370 	{ PCI_VDEVICE(INTEL, 0x8c83), board_ahci_mobile }, /* 9 Series M AHCI */
371 	{ PCI_VDEVICE(INTEL, 0x8c84), board_ahci }, /* 9 Series RAID */
372 	{ PCI_VDEVICE(INTEL, 0x8c85), board_ahci_mobile }, /* 9 Series M RAID */
373 	{ PCI_VDEVICE(INTEL, 0x8c86), board_ahci }, /* 9 Series RAID */
374 	{ PCI_VDEVICE(INTEL, 0x8c87), board_ahci_mobile }, /* 9 Series M RAID */
375 	{ PCI_VDEVICE(INTEL, 0x8c8e), board_ahci }, /* 9 Series RAID */
376 	{ PCI_VDEVICE(INTEL, 0x8c8f), board_ahci_mobile }, /* 9 Series M RAID */
377 	{ PCI_VDEVICE(INTEL, 0x9d03), board_ahci_mobile }, /* Sunrise LP AHCI */
378 	{ PCI_VDEVICE(INTEL, 0x9d05), board_ahci_mobile }, /* Sunrise LP RAID */
379 	{ PCI_VDEVICE(INTEL, 0x9d07), board_ahci_mobile }, /* Sunrise LP RAID */
380 	{ PCI_VDEVICE(INTEL, 0xa102), board_ahci }, /* Sunrise Point-H AHCI */
381 	{ PCI_VDEVICE(INTEL, 0xa103), board_ahci_mobile }, /* Sunrise M AHCI */
382 	{ PCI_VDEVICE(INTEL, 0xa105), board_ahci }, /* Sunrise Point-H RAID */
383 	{ PCI_VDEVICE(INTEL, 0xa106), board_ahci }, /* Sunrise Point-H RAID */
384 	{ PCI_VDEVICE(INTEL, 0xa107), board_ahci_mobile }, /* Sunrise M RAID */
385 	{ PCI_VDEVICE(INTEL, 0xa10f), board_ahci }, /* Sunrise Point-H RAID */
386 	{ PCI_VDEVICE(INTEL, 0x2822), board_ahci }, /* Lewisburg RAID*/
387 	{ PCI_VDEVICE(INTEL, 0x2823), board_ahci }, /* Lewisburg AHCI*/
388 	{ PCI_VDEVICE(INTEL, 0x2826), board_ahci }, /* Lewisburg RAID*/
389 	{ PCI_VDEVICE(INTEL, 0x2827), board_ahci }, /* Lewisburg RAID*/
390 	{ PCI_VDEVICE(INTEL, 0xa182), board_ahci }, /* Lewisburg AHCI*/
391 	{ PCI_VDEVICE(INTEL, 0xa186), board_ahci }, /* Lewisburg RAID*/
392 	{ PCI_VDEVICE(INTEL, 0xa1d2), board_ahci }, /* Lewisburg RAID*/
393 	{ PCI_VDEVICE(INTEL, 0xa1d6), board_ahci }, /* Lewisburg RAID*/
394 	{ PCI_VDEVICE(INTEL, 0xa202), board_ahci }, /* Lewisburg AHCI*/
395 	{ PCI_VDEVICE(INTEL, 0xa206), board_ahci }, /* Lewisburg RAID*/
396 	{ PCI_VDEVICE(INTEL, 0xa252), board_ahci }, /* Lewisburg RAID*/
397 	{ PCI_VDEVICE(INTEL, 0xa256), board_ahci }, /* Lewisburg RAID*/
398 	{ PCI_VDEVICE(INTEL, 0xa356), board_ahci }, /* Cannon Lake PCH-H RAID */
399 	{ PCI_VDEVICE(INTEL, 0x0f22), board_ahci_mobile }, /* Bay Trail AHCI */
400 	{ PCI_VDEVICE(INTEL, 0x0f23), board_ahci_mobile }, /* Bay Trail AHCI */
401 	{ PCI_VDEVICE(INTEL, 0x22a3), board_ahci_mobile }, /* Cherry Tr. AHCI */
402 	{ PCI_VDEVICE(INTEL, 0x5ae3), board_ahci_mobile }, /* ApolloLake AHCI */
403 	{ PCI_VDEVICE(INTEL, 0x34d3), board_ahci_mobile }, /* Ice Lake LP AHCI */
404 
405 	/* JMicron 360/1/3/5/6, match class to avoid IDE function */
406 	{ PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
407 	  PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci_ign_iferr },
408 	/* JMicron 362B and 362C have an AHCI function with IDE class code */
409 	{ PCI_VDEVICE(JMICRON, 0x2362), board_ahci_ign_iferr },
410 	{ PCI_VDEVICE(JMICRON, 0x236f), board_ahci_ign_iferr },
411 	/* May need to update quirk_jmicron_async_suspend() for additions */
412 
413 	/* ATI */
414 	{ PCI_VDEVICE(ATI, 0x4380), board_ahci_sb600 }, /* ATI SB600 */
415 	{ PCI_VDEVICE(ATI, 0x4390), board_ahci_sb700 }, /* ATI SB700/800 */
416 	{ PCI_VDEVICE(ATI, 0x4391), board_ahci_sb700 }, /* ATI SB700/800 */
417 	{ PCI_VDEVICE(ATI, 0x4392), board_ahci_sb700 }, /* ATI SB700/800 */
418 	{ PCI_VDEVICE(ATI, 0x4393), board_ahci_sb700 }, /* ATI SB700/800 */
419 	{ PCI_VDEVICE(ATI, 0x4394), board_ahci_sb700 }, /* ATI SB700/800 */
420 	{ PCI_VDEVICE(ATI, 0x4395), board_ahci_sb700 }, /* ATI SB700/800 */
421 
422 	/* AMD */
423 	{ PCI_VDEVICE(AMD, 0x7800), board_ahci }, /* AMD Hudson-2 */
424 	{ PCI_VDEVICE(AMD, 0x7900), board_ahci }, /* AMD CZ */
425 	/* AMD is using RAID class only for ahci controllers */
426 	{ PCI_VENDOR_ID_AMD, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
427 	  PCI_CLASS_STORAGE_RAID << 8, 0xffffff, board_ahci },
428 
429 	/* VIA */
430 	{ PCI_VDEVICE(VIA, 0x3349), board_ahci_vt8251 }, /* VIA VT8251 */
431 	{ PCI_VDEVICE(VIA, 0x6287), board_ahci_vt8251 }, /* VIA VT8251 */
432 
433 	/* NVIDIA */
434 	{ PCI_VDEVICE(NVIDIA, 0x044c), board_ahci_mcp65 },	/* MCP65 */
435 	{ PCI_VDEVICE(NVIDIA, 0x044d), board_ahci_mcp65 },	/* MCP65 */
436 	{ PCI_VDEVICE(NVIDIA, 0x044e), board_ahci_mcp65 },	/* MCP65 */
437 	{ PCI_VDEVICE(NVIDIA, 0x044f), board_ahci_mcp65 },	/* MCP65 */
438 	{ PCI_VDEVICE(NVIDIA, 0x045c), board_ahci_mcp65 },	/* MCP65 */
439 	{ PCI_VDEVICE(NVIDIA, 0x045d), board_ahci_mcp65 },	/* MCP65 */
440 	{ PCI_VDEVICE(NVIDIA, 0x045e), board_ahci_mcp65 },	/* MCP65 */
441 	{ PCI_VDEVICE(NVIDIA, 0x045f), board_ahci_mcp65 },	/* MCP65 */
442 	{ PCI_VDEVICE(NVIDIA, 0x0550), board_ahci_mcp67 },	/* MCP67 */
443 	{ PCI_VDEVICE(NVIDIA, 0x0551), board_ahci_mcp67 },	/* MCP67 */
444 	{ PCI_VDEVICE(NVIDIA, 0x0552), board_ahci_mcp67 },	/* MCP67 */
445 	{ PCI_VDEVICE(NVIDIA, 0x0553), board_ahci_mcp67 },	/* MCP67 */
446 	{ PCI_VDEVICE(NVIDIA, 0x0554), board_ahci_mcp67 },	/* MCP67 */
447 	{ PCI_VDEVICE(NVIDIA, 0x0555), board_ahci_mcp67 },	/* MCP67 */
448 	{ PCI_VDEVICE(NVIDIA, 0x0556), board_ahci_mcp67 },	/* MCP67 */
449 	{ PCI_VDEVICE(NVIDIA, 0x0557), board_ahci_mcp67 },	/* MCP67 */
450 	{ PCI_VDEVICE(NVIDIA, 0x0558), board_ahci_mcp67 },	/* MCP67 */
451 	{ PCI_VDEVICE(NVIDIA, 0x0559), board_ahci_mcp67 },	/* MCP67 */
452 	{ PCI_VDEVICE(NVIDIA, 0x055a), board_ahci_mcp67 },	/* MCP67 */
453 	{ PCI_VDEVICE(NVIDIA, 0x055b), board_ahci_mcp67 },	/* MCP67 */
454 	{ PCI_VDEVICE(NVIDIA, 0x0580), board_ahci_mcp_linux },	/* Linux ID */
455 	{ PCI_VDEVICE(NVIDIA, 0x0581), board_ahci_mcp_linux },	/* Linux ID */
456 	{ PCI_VDEVICE(NVIDIA, 0x0582), board_ahci_mcp_linux },	/* Linux ID */
457 	{ PCI_VDEVICE(NVIDIA, 0x0583), board_ahci_mcp_linux },	/* Linux ID */
458 	{ PCI_VDEVICE(NVIDIA, 0x0584), board_ahci_mcp_linux },	/* Linux ID */
459 	{ PCI_VDEVICE(NVIDIA, 0x0585), board_ahci_mcp_linux },	/* Linux ID */
460 	{ PCI_VDEVICE(NVIDIA, 0x0586), board_ahci_mcp_linux },	/* Linux ID */
461 	{ PCI_VDEVICE(NVIDIA, 0x0587), board_ahci_mcp_linux },	/* Linux ID */
462 	{ PCI_VDEVICE(NVIDIA, 0x0588), board_ahci_mcp_linux },	/* Linux ID */
463 	{ PCI_VDEVICE(NVIDIA, 0x0589), board_ahci_mcp_linux },	/* Linux ID */
464 	{ PCI_VDEVICE(NVIDIA, 0x058a), board_ahci_mcp_linux },	/* Linux ID */
465 	{ PCI_VDEVICE(NVIDIA, 0x058b), board_ahci_mcp_linux },	/* Linux ID */
466 	{ PCI_VDEVICE(NVIDIA, 0x058c), board_ahci_mcp_linux },	/* Linux ID */
467 	{ PCI_VDEVICE(NVIDIA, 0x058d), board_ahci_mcp_linux },	/* Linux ID */
468 	{ PCI_VDEVICE(NVIDIA, 0x058e), board_ahci_mcp_linux },	/* Linux ID */
469 	{ PCI_VDEVICE(NVIDIA, 0x058f), board_ahci_mcp_linux },	/* Linux ID */
470 	{ PCI_VDEVICE(NVIDIA, 0x07f0), board_ahci_mcp73 },	/* MCP73 */
471 	{ PCI_VDEVICE(NVIDIA, 0x07f1), board_ahci_mcp73 },	/* MCP73 */
472 	{ PCI_VDEVICE(NVIDIA, 0x07f2), board_ahci_mcp73 },	/* MCP73 */
473 	{ PCI_VDEVICE(NVIDIA, 0x07f3), board_ahci_mcp73 },	/* MCP73 */
474 	{ PCI_VDEVICE(NVIDIA, 0x07f4), board_ahci_mcp73 },	/* MCP73 */
475 	{ PCI_VDEVICE(NVIDIA, 0x07f5), board_ahci_mcp73 },	/* MCP73 */
476 	{ PCI_VDEVICE(NVIDIA, 0x07f6), board_ahci_mcp73 },	/* MCP73 */
477 	{ PCI_VDEVICE(NVIDIA, 0x07f7), board_ahci_mcp73 },	/* MCP73 */
478 	{ PCI_VDEVICE(NVIDIA, 0x07f8), board_ahci_mcp73 },	/* MCP73 */
479 	{ PCI_VDEVICE(NVIDIA, 0x07f9), board_ahci_mcp73 },	/* MCP73 */
480 	{ PCI_VDEVICE(NVIDIA, 0x07fa), board_ahci_mcp73 },	/* MCP73 */
481 	{ PCI_VDEVICE(NVIDIA, 0x07fb), board_ahci_mcp73 },	/* MCP73 */
482 	{ PCI_VDEVICE(NVIDIA, 0x0ad0), board_ahci_mcp77 },	/* MCP77 */
483 	{ PCI_VDEVICE(NVIDIA, 0x0ad1), board_ahci_mcp77 },	/* MCP77 */
484 	{ PCI_VDEVICE(NVIDIA, 0x0ad2), board_ahci_mcp77 },	/* MCP77 */
485 	{ PCI_VDEVICE(NVIDIA, 0x0ad3), board_ahci_mcp77 },	/* MCP77 */
486 	{ PCI_VDEVICE(NVIDIA, 0x0ad4), board_ahci_mcp77 },	/* MCP77 */
487 	{ PCI_VDEVICE(NVIDIA, 0x0ad5), board_ahci_mcp77 },	/* MCP77 */
488 	{ PCI_VDEVICE(NVIDIA, 0x0ad6), board_ahci_mcp77 },	/* MCP77 */
489 	{ PCI_VDEVICE(NVIDIA, 0x0ad7), board_ahci_mcp77 },	/* MCP77 */
490 	{ PCI_VDEVICE(NVIDIA, 0x0ad8), board_ahci_mcp77 },	/* MCP77 */
491 	{ PCI_VDEVICE(NVIDIA, 0x0ad9), board_ahci_mcp77 },	/* MCP77 */
492 	{ PCI_VDEVICE(NVIDIA, 0x0ada), board_ahci_mcp77 },	/* MCP77 */
493 	{ PCI_VDEVICE(NVIDIA, 0x0adb), board_ahci_mcp77 },	/* MCP77 */
494 	{ PCI_VDEVICE(NVIDIA, 0x0ab4), board_ahci_mcp79 },	/* MCP79 */
495 	{ PCI_VDEVICE(NVIDIA, 0x0ab5), board_ahci_mcp79 },	/* MCP79 */
496 	{ PCI_VDEVICE(NVIDIA, 0x0ab6), board_ahci_mcp79 },	/* MCP79 */
497 	{ PCI_VDEVICE(NVIDIA, 0x0ab7), board_ahci_mcp79 },	/* MCP79 */
498 	{ PCI_VDEVICE(NVIDIA, 0x0ab8), board_ahci_mcp79 },	/* MCP79 */
499 	{ PCI_VDEVICE(NVIDIA, 0x0ab9), board_ahci_mcp79 },	/* MCP79 */
500 	{ PCI_VDEVICE(NVIDIA, 0x0aba), board_ahci_mcp79 },	/* MCP79 */
501 	{ PCI_VDEVICE(NVIDIA, 0x0abb), board_ahci_mcp79 },	/* MCP79 */
502 	{ PCI_VDEVICE(NVIDIA, 0x0abc), board_ahci_mcp79 },	/* MCP79 */
503 	{ PCI_VDEVICE(NVIDIA, 0x0abd), board_ahci_mcp79 },	/* MCP79 */
504 	{ PCI_VDEVICE(NVIDIA, 0x0abe), board_ahci_mcp79 },	/* MCP79 */
505 	{ PCI_VDEVICE(NVIDIA, 0x0abf), board_ahci_mcp79 },	/* MCP79 */
506 	{ PCI_VDEVICE(NVIDIA, 0x0d84), board_ahci_mcp89 },	/* MCP89 */
507 	{ PCI_VDEVICE(NVIDIA, 0x0d85), board_ahci_mcp89 },	/* MCP89 */
508 	{ PCI_VDEVICE(NVIDIA, 0x0d86), board_ahci_mcp89 },	/* MCP89 */
509 	{ PCI_VDEVICE(NVIDIA, 0x0d87), board_ahci_mcp89 },	/* MCP89 */
510 	{ PCI_VDEVICE(NVIDIA, 0x0d88), board_ahci_mcp89 },	/* MCP89 */
511 	{ PCI_VDEVICE(NVIDIA, 0x0d89), board_ahci_mcp89 },	/* MCP89 */
512 	{ PCI_VDEVICE(NVIDIA, 0x0d8a), board_ahci_mcp89 },	/* MCP89 */
513 	{ PCI_VDEVICE(NVIDIA, 0x0d8b), board_ahci_mcp89 },	/* MCP89 */
514 	{ PCI_VDEVICE(NVIDIA, 0x0d8c), board_ahci_mcp89 },	/* MCP89 */
515 	{ PCI_VDEVICE(NVIDIA, 0x0d8d), board_ahci_mcp89 },	/* MCP89 */
516 	{ PCI_VDEVICE(NVIDIA, 0x0d8e), board_ahci_mcp89 },	/* MCP89 */
517 	{ PCI_VDEVICE(NVIDIA, 0x0d8f), board_ahci_mcp89 },	/* MCP89 */
518 
519 	/* SiS */
520 	{ PCI_VDEVICE(SI, 0x1184), board_ahci },		/* SiS 966 */
521 	{ PCI_VDEVICE(SI, 0x1185), board_ahci },		/* SiS 968 */
522 	{ PCI_VDEVICE(SI, 0x0186), board_ahci },		/* SiS 968 */
523 
524 	/* ST Microelectronics */
525 	{ PCI_VDEVICE(STMICRO, 0xCC06), board_ahci },		/* ST ConneXt */
526 
527 	/* Marvell */
528 	{ PCI_VDEVICE(MARVELL, 0x6145), board_ahci_mv },	/* 6145 */
529 	{ PCI_VDEVICE(MARVELL, 0x6121), board_ahci_mv },	/* 6121 */
530 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9123),
531 	  .class = PCI_CLASS_STORAGE_SATA_AHCI,
532 	  .class_mask = 0xffffff,
533 	  .driver_data = board_ahci_yes_fbs },			/* 88se9128 */
534 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9125),
535 	  .driver_data = board_ahci_yes_fbs },			/* 88se9125 */
536 	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_MARVELL_EXT, 0x9178,
537 			 PCI_VENDOR_ID_MARVELL_EXT, 0x9170),
538 	  .driver_data = board_ahci_yes_fbs },			/* 88se9170 */
539 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x917a),
540 	  .driver_data = board_ahci_yes_fbs },			/* 88se9172 */
541 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9172),
542 	  .driver_data = board_ahci_yes_fbs },			/* 88se9182 */
543 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9182),
544 	  .driver_data = board_ahci_yes_fbs },			/* 88se9172 */
545 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9192),
546 	  .driver_data = board_ahci_yes_fbs },			/* 88se9172 on some Gigabyte */
547 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x91a0),
548 	  .driver_data = board_ahci_yes_fbs },
549 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x91a2), 	/* 88se91a2 */
550 	  .driver_data = board_ahci_yes_fbs },
551 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x91a3),
552 	  .driver_data = board_ahci_yes_fbs },
553 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9230),
554 	  .driver_data = board_ahci_yes_fbs },
555 	{ PCI_DEVICE(PCI_VENDOR_ID_TTI, 0x0642), /* highpoint rocketraid 642L */
556 	  .driver_data = board_ahci_yes_fbs },
557 	{ PCI_DEVICE(PCI_VENDOR_ID_TTI, 0x0645), /* highpoint rocketraid 644L */
558 	  .driver_data = board_ahci_yes_fbs },
559 
560 	/* Promise */
561 	{ PCI_VDEVICE(PROMISE, 0x3f20), board_ahci },	/* PDC42819 */
562 	{ PCI_VDEVICE(PROMISE, 0x3781), board_ahci },   /* FastTrak TX8660 ahci-mode */
563 
564 	/* Asmedia */
565 	{ PCI_VDEVICE(ASMEDIA, 0x0601), board_ahci },	/* ASM1060 */
566 	{ PCI_VDEVICE(ASMEDIA, 0x0602), board_ahci },	/* ASM1060 */
567 	{ PCI_VDEVICE(ASMEDIA, 0x0611), board_ahci },	/* ASM1061 */
568 	{ PCI_VDEVICE(ASMEDIA, 0x0612), board_ahci },	/* ASM1062 */
569 	{ PCI_VDEVICE(ASMEDIA, 0x0621), board_ahci },   /* ASM1061R */
570 	{ PCI_VDEVICE(ASMEDIA, 0x0622), board_ahci },   /* ASM1062R */
571 
572 	/*
573 	 * Samsung SSDs found on some macbooks.  NCQ times out if MSI is
574 	 * enabled.  https://bugzilla.kernel.org/show_bug.cgi?id=60731
575 	 */
576 	{ PCI_VDEVICE(SAMSUNG, 0x1600), board_ahci_nomsi },
577 	{ PCI_VDEVICE(SAMSUNG, 0xa800), board_ahci_nomsi },
578 
579 	/* Enmotus */
580 	{ PCI_DEVICE(0x1c44, 0x8000), board_ahci },
581 
582 	/* Generic, PCI class code for AHCI */
583 	{ PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
584 	  PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci },
585 
586 	{ }	/* terminate list */
587 };
588 
589 static const struct dev_pm_ops ahci_pci_pm_ops = {
590 	SET_SYSTEM_SLEEP_PM_OPS(ahci_pci_device_suspend, ahci_pci_device_resume)
591 	SET_RUNTIME_PM_OPS(ahci_pci_device_runtime_suspend,
592 			   ahci_pci_device_runtime_resume, NULL)
593 };
594 
595 static struct pci_driver ahci_pci_driver = {
596 	.name			= DRV_NAME,
597 	.id_table		= ahci_pci_tbl,
598 	.probe			= ahci_init_one,
599 	.remove			= ahci_remove_one,
600 	.driver = {
601 		.pm		= &ahci_pci_pm_ops,
602 	},
603 };
604 
605 #if IS_ENABLED(CONFIG_PATA_MARVELL)
606 static int marvell_enable;
607 #else
608 static int marvell_enable = 1;
609 #endif
610 module_param(marvell_enable, int, 0644);
611 MODULE_PARM_DESC(marvell_enable, "Marvell SATA via AHCI (1 = enabled)");
612 
613 static int mobile_lpm_policy = -1;
614 module_param(mobile_lpm_policy, int, 0644);
615 MODULE_PARM_DESC(mobile_lpm_policy, "Default LPM policy for mobile chipsets");
616 
617 static void ahci_pci_save_initial_config(struct pci_dev *pdev,
618 					 struct ahci_host_priv *hpriv)
619 {
620 	if (pdev->vendor == PCI_VENDOR_ID_JMICRON && pdev->device == 0x2361) {
621 		dev_info(&pdev->dev, "JMB361 has only one port\n");
622 		hpriv->force_port_map = 1;
623 	}
624 
625 	/*
626 	 * Temporary Marvell 6145 hack: PATA port presence
627 	 * is asserted through the standard AHCI port
628 	 * presence register, as bit 4 (counting from 0)
629 	 */
630 	if (hpriv->flags & AHCI_HFLAG_MV_PATA) {
631 		if (pdev->device == 0x6121)
632 			hpriv->mask_port_map = 0x3;
633 		else
634 			hpriv->mask_port_map = 0xf;
635 		dev_info(&pdev->dev,
636 			  "Disabling your PATA port. Use the boot option 'ahci.marvell_enable=0' to avoid this.\n");
637 	}
638 
639 	ahci_save_initial_config(&pdev->dev, hpriv);
640 }
641 
642 static int ahci_pci_reset_controller(struct ata_host *host)
643 {
644 	struct pci_dev *pdev = to_pci_dev(host->dev);
645 	int rc;
646 
647 	rc = ahci_reset_controller(host);
648 	if (rc)
649 		return rc;
650 
651 	if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
652 		struct ahci_host_priv *hpriv = host->private_data;
653 		u16 tmp16;
654 
655 		/* configure PCS */
656 		pci_read_config_word(pdev, 0x92, &tmp16);
657 		if ((tmp16 & hpriv->port_map) != hpriv->port_map) {
658 			tmp16 |= hpriv->port_map;
659 			pci_write_config_word(pdev, 0x92, tmp16);
660 		}
661 	}
662 
663 	return 0;
664 }
665 
666 static void ahci_pci_init_controller(struct ata_host *host)
667 {
668 	struct ahci_host_priv *hpriv = host->private_data;
669 	struct pci_dev *pdev = to_pci_dev(host->dev);
670 	void __iomem *port_mmio;
671 	u32 tmp;
672 	int mv;
673 
674 	if (hpriv->flags & AHCI_HFLAG_MV_PATA) {
675 		if (pdev->device == 0x6121)
676 			mv = 2;
677 		else
678 			mv = 4;
679 		port_mmio = __ahci_port_base(host, mv);
680 
681 		writel(0, port_mmio + PORT_IRQ_MASK);
682 
683 		/* clear port IRQ */
684 		tmp = readl(port_mmio + PORT_IRQ_STAT);
685 		VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp);
686 		if (tmp)
687 			writel(tmp, port_mmio + PORT_IRQ_STAT);
688 	}
689 
690 	ahci_init_controller(host);
691 }
692 
693 static int ahci_vt8251_hardreset(struct ata_link *link, unsigned int *class,
694 				 unsigned long deadline)
695 {
696 	struct ata_port *ap = link->ap;
697 	struct ahci_host_priv *hpriv = ap->host->private_data;
698 	bool online;
699 	int rc;
700 
701 	DPRINTK("ENTER\n");
702 
703 	hpriv->stop_engine(ap);
704 
705 	rc = sata_link_hardreset(link, sata_ehc_deb_timing(&link->eh_context),
706 				 deadline, &online, NULL);
707 
708 	hpriv->start_engine(ap);
709 
710 	DPRINTK("EXIT, rc=%d, class=%u\n", rc, *class);
711 
712 	/* vt8251 doesn't clear BSY on signature FIS reception,
713 	 * request follow-up softreset.
714 	 */
715 	return online ? -EAGAIN : rc;
716 }
717 
718 static int ahci_p5wdh_hardreset(struct ata_link *link, unsigned int *class,
719 				unsigned long deadline)
720 {
721 	struct ata_port *ap = link->ap;
722 	struct ahci_port_priv *pp = ap->private_data;
723 	struct ahci_host_priv *hpriv = ap->host->private_data;
724 	u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
725 	struct ata_taskfile tf;
726 	bool online;
727 	int rc;
728 
729 	hpriv->stop_engine(ap);
730 
731 	/* clear D2H reception area to properly wait for D2H FIS */
732 	ata_tf_init(link->device, &tf);
733 	tf.command = ATA_BUSY;
734 	ata_tf_to_fis(&tf, 0, 0, d2h_fis);
735 
736 	rc = sata_link_hardreset(link, sata_ehc_deb_timing(&link->eh_context),
737 				 deadline, &online, NULL);
738 
739 	hpriv->start_engine(ap);
740 
741 	/* The pseudo configuration device on SIMG4726 attached to
742 	 * ASUS P5W-DH Deluxe doesn't send signature FIS after
743 	 * hardreset if no device is attached to the first downstream
744 	 * port && the pseudo device locks up on SRST w/ PMP==0.  To
745 	 * work around this, wait for !BSY only briefly.  If BSY isn't
746 	 * cleared, perform CLO and proceed to IDENTIFY (achieved by
747 	 * ATA_LFLAG_NO_SRST and ATA_LFLAG_ASSUME_ATA).
748 	 *
749 	 * Wait for two seconds.  Devices attached to downstream port
750 	 * which can't process the following IDENTIFY after this will
751 	 * have to be reset again.  For most cases, this should
752 	 * suffice while making probing snappish enough.
753 	 */
754 	if (online) {
755 		rc = ata_wait_after_reset(link, jiffies + 2 * HZ,
756 					  ahci_check_ready);
757 		if (rc)
758 			ahci_kick_engine(ap);
759 	}
760 	return rc;
761 }
762 
763 /*
764  * ahci_avn_hardreset - attempt more aggressive recovery of Avoton ports.
765  *
766  * It has been observed with some SSDs that the timing of events in the
767  * link synchronization phase can leave the port in a state that can not
768  * be recovered by a SATA-hard-reset alone.  The failing signature is
769  * SStatus.DET stuck at 1 ("Device presence detected but Phy
770  * communication not established").  It was found that unloading and
771  * reloading the driver when this problem occurs allows the drive
772  * connection to be recovered (DET advanced to 0x3).  The critical
773  * component of reloading the driver is that the port state machines are
774  * reset by bouncing "port enable" in the AHCI PCS configuration
775  * register.  So, reproduce that effect by bouncing a port whenever we
776  * see DET==1 after a reset.
777  */
778 static int ahci_avn_hardreset(struct ata_link *link, unsigned int *class,
779 			      unsigned long deadline)
780 {
781 	const unsigned long *timing = sata_ehc_deb_timing(&link->eh_context);
782 	struct ata_port *ap = link->ap;
783 	struct ahci_port_priv *pp = ap->private_data;
784 	struct ahci_host_priv *hpriv = ap->host->private_data;
785 	u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
786 	unsigned long tmo = deadline - jiffies;
787 	struct ata_taskfile tf;
788 	bool online;
789 	int rc, i;
790 
791 	DPRINTK("ENTER\n");
792 
793 	hpriv->stop_engine(ap);
794 
795 	for (i = 0; i < 2; i++) {
796 		u16 val;
797 		u32 sstatus;
798 		int port = ap->port_no;
799 		struct ata_host *host = ap->host;
800 		struct pci_dev *pdev = to_pci_dev(host->dev);
801 
802 		/* clear D2H reception area to properly wait for D2H FIS */
803 		ata_tf_init(link->device, &tf);
804 		tf.command = ATA_BUSY;
805 		ata_tf_to_fis(&tf, 0, 0, d2h_fis);
806 
807 		rc = sata_link_hardreset(link, timing, deadline, &online,
808 				ahci_check_ready);
809 
810 		if (sata_scr_read(link, SCR_STATUS, &sstatus) != 0 ||
811 				(sstatus & 0xf) != 1)
812 			break;
813 
814 		ata_link_printk(link, KERN_INFO, "avn bounce port%d\n",
815 				port);
816 
817 		pci_read_config_word(pdev, 0x92, &val);
818 		val &= ~(1 << port);
819 		pci_write_config_word(pdev, 0x92, val);
820 		ata_msleep(ap, 1000);
821 		val |= 1 << port;
822 		pci_write_config_word(pdev, 0x92, val);
823 		deadline += tmo;
824 	}
825 
826 	hpriv->start_engine(ap);
827 
828 	if (online)
829 		*class = ahci_dev_classify(ap);
830 
831 	DPRINTK("EXIT, rc=%d, class=%u\n", rc, *class);
832 	return rc;
833 }
834 
835 
836 #ifdef CONFIG_PM
837 static void ahci_pci_disable_interrupts(struct ata_host *host)
838 {
839 	struct ahci_host_priv *hpriv = host->private_data;
840 	void __iomem *mmio = hpriv->mmio;
841 	u32 ctl;
842 
843 	/* AHCI spec rev1.1 section 8.3.3:
844 	 * Software must disable interrupts prior to requesting a
845 	 * transition of the HBA to D3 state.
846 	 */
847 	ctl = readl(mmio + HOST_CTL);
848 	ctl &= ~HOST_IRQ_EN;
849 	writel(ctl, mmio + HOST_CTL);
850 	readl(mmio + HOST_CTL); /* flush */
851 }
852 
853 static int ahci_pci_device_runtime_suspend(struct device *dev)
854 {
855 	struct pci_dev *pdev = to_pci_dev(dev);
856 	struct ata_host *host = pci_get_drvdata(pdev);
857 
858 	ahci_pci_disable_interrupts(host);
859 	return 0;
860 }
861 
862 static int ahci_pci_device_runtime_resume(struct device *dev)
863 {
864 	struct pci_dev *pdev = to_pci_dev(dev);
865 	struct ata_host *host = pci_get_drvdata(pdev);
866 	int rc;
867 
868 	rc = ahci_pci_reset_controller(host);
869 	if (rc)
870 		return rc;
871 	ahci_pci_init_controller(host);
872 	return 0;
873 }
874 
875 #ifdef CONFIG_PM_SLEEP
876 static int ahci_pci_device_suspend(struct device *dev)
877 {
878 	struct pci_dev *pdev = to_pci_dev(dev);
879 	struct ata_host *host = pci_get_drvdata(pdev);
880 	struct ahci_host_priv *hpriv = host->private_data;
881 
882 	if (hpriv->flags & AHCI_HFLAG_NO_SUSPEND) {
883 		dev_err(&pdev->dev,
884 			"BIOS update required for suspend/resume\n");
885 		return -EIO;
886 	}
887 
888 	ahci_pci_disable_interrupts(host);
889 	return ata_host_suspend(host, PMSG_SUSPEND);
890 }
891 
892 static int ahci_pci_device_resume(struct device *dev)
893 {
894 	struct pci_dev *pdev = to_pci_dev(dev);
895 	struct ata_host *host = pci_get_drvdata(pdev);
896 	int rc;
897 
898 	/* Apple BIOS helpfully mangles the registers on resume */
899 	if (is_mcp89_apple(pdev))
900 		ahci_mcp89_apple_enable(pdev);
901 
902 	if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
903 		rc = ahci_pci_reset_controller(host);
904 		if (rc)
905 			return rc;
906 
907 		ahci_pci_init_controller(host);
908 	}
909 
910 	ata_host_resume(host);
911 
912 	return 0;
913 }
914 #endif
915 
916 #endif /* CONFIG_PM */
917 
918 static int ahci_configure_dma_masks(struct pci_dev *pdev, int using_dac)
919 {
920 	int rc;
921 
922 	/*
923 	 * If the device fixup already set the dma_mask to some non-standard
924 	 * value, don't extend it here. This happens on STA2X11, for example.
925 	 */
926 	if (pdev->dma_mask && pdev->dma_mask < DMA_BIT_MASK(32))
927 		return 0;
928 
929 	if (using_dac &&
930 	    !dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) {
931 		rc = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
932 		if (rc) {
933 			rc = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
934 			if (rc) {
935 				dev_err(&pdev->dev,
936 					"64-bit DMA enable failed\n");
937 				return rc;
938 			}
939 		}
940 	} else {
941 		rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
942 		if (rc) {
943 			dev_err(&pdev->dev, "32-bit DMA enable failed\n");
944 			return rc;
945 		}
946 		rc = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
947 		if (rc) {
948 			dev_err(&pdev->dev,
949 				"32-bit consistent DMA enable failed\n");
950 			return rc;
951 		}
952 	}
953 	return 0;
954 }
955 
956 static void ahci_pci_print_info(struct ata_host *host)
957 {
958 	struct pci_dev *pdev = to_pci_dev(host->dev);
959 	u16 cc;
960 	const char *scc_s;
961 
962 	pci_read_config_word(pdev, 0x0a, &cc);
963 	if (cc == PCI_CLASS_STORAGE_IDE)
964 		scc_s = "IDE";
965 	else if (cc == PCI_CLASS_STORAGE_SATA)
966 		scc_s = "SATA";
967 	else if (cc == PCI_CLASS_STORAGE_RAID)
968 		scc_s = "RAID";
969 	else
970 		scc_s = "unknown";
971 
972 	ahci_print_info(host, scc_s);
973 }
974 
975 /* On ASUS P5W DH Deluxe, the second port of PCI device 00:1f.2 is
976  * hardwired to on-board SIMG 4726.  The chipset is ICH8 and doesn't
977  * support PMP and the 4726 either directly exports the device
978  * attached to the first downstream port or acts as a hardware storage
979  * controller and emulate a single ATA device (can be RAID 0/1 or some
980  * other configuration).
981  *
982  * When there's no device attached to the first downstream port of the
983  * 4726, "Config Disk" appears, which is a pseudo ATA device to
984  * configure the 4726.  However, ATA emulation of the device is very
985  * lame.  It doesn't send signature D2H Reg FIS after the initial
986  * hardreset, pukes on SRST w/ PMP==0 and has bunch of other issues.
987  *
988  * The following function works around the problem by always using
989  * hardreset on the port and not depending on receiving signature FIS
990  * afterward.  If signature FIS isn't received soon, ATA class is
991  * assumed without follow-up softreset.
992  */
993 static void ahci_p5wdh_workaround(struct ata_host *host)
994 {
995 	static const struct dmi_system_id sysids[] = {
996 		{
997 			.ident = "P5W DH Deluxe",
998 			.matches = {
999 				DMI_MATCH(DMI_SYS_VENDOR,
1000 					  "ASUSTEK COMPUTER INC"),
1001 				DMI_MATCH(DMI_PRODUCT_NAME, "P5W DH Deluxe"),
1002 			},
1003 		},
1004 		{ }
1005 	};
1006 	struct pci_dev *pdev = to_pci_dev(host->dev);
1007 
1008 	if (pdev->bus->number == 0 && pdev->devfn == PCI_DEVFN(0x1f, 2) &&
1009 	    dmi_check_system(sysids)) {
1010 		struct ata_port *ap = host->ports[1];
1011 
1012 		dev_info(&pdev->dev,
1013 			 "enabling ASUS P5W DH Deluxe on-board SIMG4726 workaround\n");
1014 
1015 		ap->ops = &ahci_p5wdh_ops;
1016 		ap->link.flags |= ATA_LFLAG_NO_SRST | ATA_LFLAG_ASSUME_ATA;
1017 	}
1018 }
1019 
1020 /*
1021  * Macbook7,1 firmware forcibly disables MCP89 AHCI and changes PCI ID when
1022  * booting in BIOS compatibility mode.  We restore the registers but not ID.
1023  */
1024 static void ahci_mcp89_apple_enable(struct pci_dev *pdev)
1025 {
1026 	u32 val;
1027 
1028 	printk(KERN_INFO "ahci: enabling MCP89 AHCI mode\n");
1029 
1030 	pci_read_config_dword(pdev, 0xf8, &val);
1031 	val |= 1 << 0x1b;
1032 	/* the following changes the device ID, but appears not to affect function */
1033 	/* val = (val & ~0xf0000000) | 0x80000000; */
1034 	pci_write_config_dword(pdev, 0xf8, val);
1035 
1036 	pci_read_config_dword(pdev, 0x54c, &val);
1037 	val |= 1 << 0xc;
1038 	pci_write_config_dword(pdev, 0x54c, val);
1039 
1040 	pci_read_config_dword(pdev, 0x4a4, &val);
1041 	val &= 0xff;
1042 	val |= 0x01060100;
1043 	pci_write_config_dword(pdev, 0x4a4, val);
1044 
1045 	pci_read_config_dword(pdev, 0x54c, &val);
1046 	val &= ~(1 << 0xc);
1047 	pci_write_config_dword(pdev, 0x54c, val);
1048 
1049 	pci_read_config_dword(pdev, 0xf8, &val);
1050 	val &= ~(1 << 0x1b);
1051 	pci_write_config_dword(pdev, 0xf8, val);
1052 }
1053 
1054 static bool is_mcp89_apple(struct pci_dev *pdev)
1055 {
1056 	return pdev->vendor == PCI_VENDOR_ID_NVIDIA &&
1057 		pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP89_SATA &&
1058 		pdev->subsystem_vendor == PCI_VENDOR_ID_APPLE &&
1059 		pdev->subsystem_device == 0xcb89;
1060 }
1061 
1062 /* only some SB600 ahci controllers can do 64bit DMA */
1063 static bool ahci_sb600_enable_64bit(struct pci_dev *pdev)
1064 {
1065 	static const struct dmi_system_id sysids[] = {
1066 		/*
1067 		 * The oldest version known to be broken is 0901 and
1068 		 * working is 1501 which was released on 2007-10-26.
1069 		 * Enable 64bit DMA on 1501 and anything newer.
1070 		 *
1071 		 * Please read bko#9412 for more info.
1072 		 */
1073 		{
1074 			.ident = "ASUS M2A-VM",
1075 			.matches = {
1076 				DMI_MATCH(DMI_BOARD_VENDOR,
1077 					  "ASUSTeK Computer INC."),
1078 				DMI_MATCH(DMI_BOARD_NAME, "M2A-VM"),
1079 			},
1080 			.driver_data = "20071026",	/* yyyymmdd */
1081 		},
1082 		/*
1083 		 * All BIOS versions for the MSI K9A2 Platinum (MS-7376)
1084 		 * support 64bit DMA.
1085 		 *
1086 		 * BIOS versions earlier than 1.5 had the Manufacturer DMI
1087 		 * fields as "MICRO-STAR INTERANTIONAL CO.,LTD".
1088 		 * This spelling mistake was fixed in BIOS version 1.5, so
1089 		 * 1.5 and later have the Manufacturer as
1090 		 * "MICRO-STAR INTERNATIONAL CO.,LTD".
1091 		 * So try to match on DMI_BOARD_VENDOR of "MICRO-STAR INTER".
1092 		 *
1093 		 * BIOS versions earlier than 1.9 had a Board Product Name
1094 		 * DMI field of "MS-7376". This was changed to be
1095 		 * "K9A2 Platinum (MS-7376)" in version 1.9, but we can still
1096 		 * match on DMI_BOARD_NAME of "MS-7376".
1097 		 */
1098 		{
1099 			.ident = "MSI K9A2 Platinum",
1100 			.matches = {
1101 				DMI_MATCH(DMI_BOARD_VENDOR,
1102 					  "MICRO-STAR INTER"),
1103 				DMI_MATCH(DMI_BOARD_NAME, "MS-7376"),
1104 			},
1105 		},
1106 		/*
1107 		 * All BIOS versions for the MSI K9AGM2 (MS-7327) support
1108 		 * 64bit DMA.
1109 		 *
1110 		 * This board also had the typo mentioned above in the
1111 		 * Manufacturer DMI field (fixed in BIOS version 1.5), so
1112 		 * match on DMI_BOARD_VENDOR of "MICRO-STAR INTER" again.
1113 		 */
1114 		{
1115 			.ident = "MSI K9AGM2",
1116 			.matches = {
1117 				DMI_MATCH(DMI_BOARD_VENDOR,
1118 					  "MICRO-STAR INTER"),
1119 				DMI_MATCH(DMI_BOARD_NAME, "MS-7327"),
1120 			},
1121 		},
1122 		/*
1123 		 * All BIOS versions for the Asus M3A support 64bit DMA.
1124 		 * (all release versions from 0301 to 1206 were tested)
1125 		 */
1126 		{
1127 			.ident = "ASUS M3A",
1128 			.matches = {
1129 				DMI_MATCH(DMI_BOARD_VENDOR,
1130 					  "ASUSTeK Computer INC."),
1131 				DMI_MATCH(DMI_BOARD_NAME, "M3A"),
1132 			},
1133 		},
1134 		{ }
1135 	};
1136 	const struct dmi_system_id *match;
1137 	int year, month, date;
1138 	char buf[9];
1139 
1140 	match = dmi_first_match(sysids);
1141 	if (pdev->bus->number != 0 || pdev->devfn != PCI_DEVFN(0x12, 0) ||
1142 	    !match)
1143 		return false;
1144 
1145 	if (!match->driver_data)
1146 		goto enable_64bit;
1147 
1148 	dmi_get_date(DMI_BIOS_DATE, &year, &month, &date);
1149 	snprintf(buf, sizeof(buf), "%04d%02d%02d", year, month, date);
1150 
1151 	if (strcmp(buf, match->driver_data) >= 0)
1152 		goto enable_64bit;
1153 	else {
1154 		dev_warn(&pdev->dev,
1155 			 "%s: BIOS too old, forcing 32bit DMA, update BIOS\n",
1156 			 match->ident);
1157 		return false;
1158 	}
1159 
1160 enable_64bit:
1161 	dev_warn(&pdev->dev, "%s: enabling 64bit DMA\n", match->ident);
1162 	return true;
1163 }
1164 
1165 static bool ahci_broken_system_poweroff(struct pci_dev *pdev)
1166 {
1167 	static const struct dmi_system_id broken_systems[] = {
1168 		{
1169 			.ident = "HP Compaq nx6310",
1170 			.matches = {
1171 				DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1172 				DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6310"),
1173 			},
1174 			/* PCI slot number of the controller */
1175 			.driver_data = (void *)0x1FUL,
1176 		},
1177 		{
1178 			.ident = "HP Compaq 6720s",
1179 			.matches = {
1180 				DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1181 				DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6720s"),
1182 			},
1183 			/* PCI slot number of the controller */
1184 			.driver_data = (void *)0x1FUL,
1185 		},
1186 
1187 		{ }	/* terminate list */
1188 	};
1189 	const struct dmi_system_id *dmi = dmi_first_match(broken_systems);
1190 
1191 	if (dmi) {
1192 		unsigned long slot = (unsigned long)dmi->driver_data;
1193 		/* apply the quirk only to on-board controllers */
1194 		return slot == PCI_SLOT(pdev->devfn);
1195 	}
1196 
1197 	return false;
1198 }
1199 
1200 static bool ahci_broken_suspend(struct pci_dev *pdev)
1201 {
1202 	static const struct dmi_system_id sysids[] = {
1203 		/*
1204 		 * On HP dv[4-6] and HDX18 with earlier BIOSen, link
1205 		 * to the harddisk doesn't become online after
1206 		 * resuming from STR.  Warn and fail suspend.
1207 		 *
1208 		 * http://bugzilla.kernel.org/show_bug.cgi?id=12276
1209 		 *
1210 		 * Use dates instead of versions to match as HP is
1211 		 * apparently recycling both product and version
1212 		 * strings.
1213 		 *
1214 		 * http://bugzilla.kernel.org/show_bug.cgi?id=15462
1215 		 */
1216 		{
1217 			.ident = "dv4",
1218 			.matches = {
1219 				DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1220 				DMI_MATCH(DMI_PRODUCT_NAME,
1221 					  "HP Pavilion dv4 Notebook PC"),
1222 			},
1223 			.driver_data = "20090105",	/* F.30 */
1224 		},
1225 		{
1226 			.ident = "dv5",
1227 			.matches = {
1228 				DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1229 				DMI_MATCH(DMI_PRODUCT_NAME,
1230 					  "HP Pavilion dv5 Notebook PC"),
1231 			},
1232 			.driver_data = "20090506",	/* F.16 */
1233 		},
1234 		{
1235 			.ident = "dv6",
1236 			.matches = {
1237 				DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1238 				DMI_MATCH(DMI_PRODUCT_NAME,
1239 					  "HP Pavilion dv6 Notebook PC"),
1240 			},
1241 			.driver_data = "20090423",	/* F.21 */
1242 		},
1243 		{
1244 			.ident = "HDX18",
1245 			.matches = {
1246 				DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1247 				DMI_MATCH(DMI_PRODUCT_NAME,
1248 					  "HP HDX18 Notebook PC"),
1249 			},
1250 			.driver_data = "20090430",	/* F.23 */
1251 		},
1252 		/*
1253 		 * Acer eMachines G725 has the same problem.  BIOS
1254 		 * V1.03 is known to be broken.  V3.04 is known to
1255 		 * work.  Between, there are V1.06, V2.06 and V3.03
1256 		 * that we don't have much idea about.  For now,
1257 		 * blacklist anything older than V3.04.
1258 		 *
1259 		 * http://bugzilla.kernel.org/show_bug.cgi?id=15104
1260 		 */
1261 		{
1262 			.ident = "G725",
1263 			.matches = {
1264 				DMI_MATCH(DMI_SYS_VENDOR, "eMachines"),
1265 				DMI_MATCH(DMI_PRODUCT_NAME, "eMachines G725"),
1266 			},
1267 			.driver_data = "20091216",	/* V3.04 */
1268 		},
1269 		{ }	/* terminate list */
1270 	};
1271 	const struct dmi_system_id *dmi = dmi_first_match(sysids);
1272 	int year, month, date;
1273 	char buf[9];
1274 
1275 	if (!dmi || pdev->bus->number || pdev->devfn != PCI_DEVFN(0x1f, 2))
1276 		return false;
1277 
1278 	dmi_get_date(DMI_BIOS_DATE, &year, &month, &date);
1279 	snprintf(buf, sizeof(buf), "%04d%02d%02d", year, month, date);
1280 
1281 	return strcmp(buf, dmi->driver_data) < 0;
1282 }
1283 
1284 static bool ahci_broken_lpm(struct pci_dev *pdev)
1285 {
1286 	static const struct dmi_system_id sysids[] = {
1287 		/* Various Lenovo 50 series have LPM issues with older BIOSen */
1288 		{
1289 			.matches = {
1290 				DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1291 				DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X250"),
1292 			},
1293 			.driver_data = "20180406", /* 1.31 */
1294 		},
1295 		{
1296 			.matches = {
1297 				DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1298 				DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad L450"),
1299 			},
1300 			.driver_data = "20180420", /* 1.28 */
1301 		},
1302 		{
1303 			.matches = {
1304 				DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1305 				DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T450s"),
1306 			},
1307 			.driver_data = "20180315", /* 1.33 */
1308 		},
1309 		{
1310 			.matches = {
1311 				DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1312 				DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad W541"),
1313 			},
1314 			/*
1315 			 * Note date based on release notes, 2.35 has been
1316 			 * reported to be good, but I've been unable to get
1317 			 * a hold of the reporter to get the DMI BIOS date.
1318 			 * TODO: fix this.
1319 			 */
1320 			.driver_data = "20180310", /* 2.35 */
1321 		},
1322 		{ }	/* terminate list */
1323 	};
1324 	const struct dmi_system_id *dmi = dmi_first_match(sysids);
1325 	int year, month, date;
1326 	char buf[9];
1327 
1328 	if (!dmi)
1329 		return false;
1330 
1331 	dmi_get_date(DMI_BIOS_DATE, &year, &month, &date);
1332 	snprintf(buf, sizeof(buf), "%04d%02d%02d", year, month, date);
1333 
1334 	return strcmp(buf, dmi->driver_data) < 0;
1335 }
1336 
1337 static bool ahci_broken_online(struct pci_dev *pdev)
1338 {
1339 #define ENCODE_BUSDEVFN(bus, slot, func)			\
1340 	(void *)(unsigned long)(((bus) << 8) | PCI_DEVFN((slot), (func)))
1341 	static const struct dmi_system_id sysids[] = {
1342 		/*
1343 		 * There are several gigabyte boards which use
1344 		 * SIMG5723s configured as hardware RAID.  Certain
1345 		 * 5723 firmware revisions shipped there keep the link
1346 		 * online but fail to answer properly to SRST or
1347 		 * IDENTIFY when no device is attached downstream
1348 		 * causing libata to retry quite a few times leading
1349 		 * to excessive detection delay.
1350 		 *
1351 		 * As these firmwares respond to the second reset try
1352 		 * with invalid device signature, considering unknown
1353 		 * sig as offline works around the problem acceptably.
1354 		 */
1355 		{
1356 			.ident = "EP45-DQ6",
1357 			.matches = {
1358 				DMI_MATCH(DMI_BOARD_VENDOR,
1359 					  "Gigabyte Technology Co., Ltd."),
1360 				DMI_MATCH(DMI_BOARD_NAME, "EP45-DQ6"),
1361 			},
1362 			.driver_data = ENCODE_BUSDEVFN(0x0a, 0x00, 0),
1363 		},
1364 		{
1365 			.ident = "EP45-DS5",
1366 			.matches = {
1367 				DMI_MATCH(DMI_BOARD_VENDOR,
1368 					  "Gigabyte Technology Co., Ltd."),
1369 				DMI_MATCH(DMI_BOARD_NAME, "EP45-DS5"),
1370 			},
1371 			.driver_data = ENCODE_BUSDEVFN(0x03, 0x00, 0),
1372 		},
1373 		{ }	/* terminate list */
1374 	};
1375 #undef ENCODE_BUSDEVFN
1376 	const struct dmi_system_id *dmi = dmi_first_match(sysids);
1377 	unsigned int val;
1378 
1379 	if (!dmi)
1380 		return false;
1381 
1382 	val = (unsigned long)dmi->driver_data;
1383 
1384 	return pdev->bus->number == (val >> 8) && pdev->devfn == (val & 0xff);
1385 }
1386 
1387 static bool ahci_broken_devslp(struct pci_dev *pdev)
1388 {
1389 	/* device with broken DEVSLP but still showing SDS capability */
1390 	static const struct pci_device_id ids[] = {
1391 		{ PCI_VDEVICE(INTEL, 0x0f23)}, /* Valleyview SoC */
1392 		{}
1393 	};
1394 
1395 	return pci_match_id(ids, pdev);
1396 }
1397 
1398 #ifdef CONFIG_ATA_ACPI
1399 static void ahci_gtf_filter_workaround(struct ata_host *host)
1400 {
1401 	static const struct dmi_system_id sysids[] = {
1402 		/*
1403 		 * Aspire 3810T issues a bunch of SATA enable commands
1404 		 * via _GTF including an invalid one and one which is
1405 		 * rejected by the device.  Among the successful ones
1406 		 * is FPDMA non-zero offset enable which when enabled
1407 		 * only on the drive side leads to NCQ command
1408 		 * failures.  Filter it out.
1409 		 */
1410 		{
1411 			.ident = "Aspire 3810T",
1412 			.matches = {
1413 				DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
1414 				DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3810T"),
1415 			},
1416 			.driver_data = (void *)ATA_ACPI_FILTER_FPDMA_OFFSET,
1417 		},
1418 		{ }
1419 	};
1420 	const struct dmi_system_id *dmi = dmi_first_match(sysids);
1421 	unsigned int filter;
1422 	int i;
1423 
1424 	if (!dmi)
1425 		return;
1426 
1427 	filter = (unsigned long)dmi->driver_data;
1428 	dev_info(host->dev, "applying extra ACPI _GTF filter 0x%x for %s\n",
1429 		 filter, dmi->ident);
1430 
1431 	for (i = 0; i < host->n_ports; i++) {
1432 		struct ata_port *ap = host->ports[i];
1433 		struct ata_link *link;
1434 		struct ata_device *dev;
1435 
1436 		ata_for_each_link(link, ap, EDGE)
1437 			ata_for_each_dev(dev, link, ALL)
1438 				dev->gtf_filter |= filter;
1439 	}
1440 }
1441 #else
1442 static inline void ahci_gtf_filter_workaround(struct ata_host *host)
1443 {}
1444 #endif
1445 
1446 /*
1447  * On the Acer Aspire Switch Alpha 12, sometimes all SATA ports are detected
1448  * as DUMMY, or detected but eventually get a "link down" and never get up
1449  * again. When this happens, CAP.NP may hold a value of 0x00 or 0x01, and the
1450  * port_map may hold a value of 0x00.
1451  *
1452  * Overriding CAP.NP to 0x02 and the port_map to 0x7 will reveal all 3 ports
1453  * and can significantly reduce the occurrence of the problem.
1454  *
1455  * https://bugzilla.kernel.org/show_bug.cgi?id=189471
1456  */
1457 static void acer_sa5_271_workaround(struct ahci_host_priv *hpriv,
1458 				    struct pci_dev *pdev)
1459 {
1460 	static const struct dmi_system_id sysids[] = {
1461 		{
1462 			.ident = "Acer Switch Alpha 12",
1463 			.matches = {
1464 				DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
1465 				DMI_MATCH(DMI_PRODUCT_NAME, "Switch SA5-271")
1466 			},
1467 		},
1468 		{ }
1469 	};
1470 
1471 	if (dmi_check_system(sysids)) {
1472 		dev_info(&pdev->dev, "enabling Acer Switch Alpha 12 workaround\n");
1473 		if ((hpriv->saved_cap & 0xC734FF00) == 0xC734FF00) {
1474 			hpriv->port_map = 0x7;
1475 			hpriv->cap = 0xC734FF02;
1476 		}
1477 	}
1478 }
1479 
1480 #ifdef CONFIG_ARM64
1481 /*
1482  * Due to ERRATA#22536, ThunderX needs to handle HOST_IRQ_STAT differently.
1483  * Workaround is to make sure all pending IRQs are served before leaving
1484  * handler.
1485  */
1486 static irqreturn_t ahci_thunderx_irq_handler(int irq, void *dev_instance)
1487 {
1488 	struct ata_host *host = dev_instance;
1489 	struct ahci_host_priv *hpriv;
1490 	unsigned int rc = 0;
1491 	void __iomem *mmio;
1492 	u32 irq_stat, irq_masked;
1493 	unsigned int handled = 1;
1494 
1495 	VPRINTK("ENTER\n");
1496 	hpriv = host->private_data;
1497 	mmio = hpriv->mmio;
1498 	irq_stat = readl(mmio + HOST_IRQ_STAT);
1499 	if (!irq_stat)
1500 		return IRQ_NONE;
1501 
1502 	do {
1503 		irq_masked = irq_stat & hpriv->port_map;
1504 		spin_lock(&host->lock);
1505 		rc = ahci_handle_port_intr(host, irq_masked);
1506 		if (!rc)
1507 			handled = 0;
1508 		writel(irq_stat, mmio + HOST_IRQ_STAT);
1509 		irq_stat = readl(mmio + HOST_IRQ_STAT);
1510 		spin_unlock(&host->lock);
1511 	} while (irq_stat);
1512 	VPRINTK("EXIT\n");
1513 
1514 	return IRQ_RETVAL(handled);
1515 }
1516 #endif
1517 
1518 static void ahci_remap_check(struct pci_dev *pdev, int bar,
1519 		struct ahci_host_priv *hpriv)
1520 {
1521 	int i, count = 0;
1522 	u32 cap;
1523 
1524 	/*
1525 	 * Check if this device might have remapped nvme devices.
1526 	 */
1527 	if (pdev->vendor != PCI_VENDOR_ID_INTEL ||
1528 	    pci_resource_len(pdev, bar) < SZ_512K ||
1529 	    bar != AHCI_PCI_BAR_STANDARD ||
1530 	    !(readl(hpriv->mmio + AHCI_VSCAP) & 1))
1531 		return;
1532 
1533 	cap = readq(hpriv->mmio + AHCI_REMAP_CAP);
1534 	for (i = 0; i < AHCI_MAX_REMAP; i++) {
1535 		if ((cap & (1 << i)) == 0)
1536 			continue;
1537 		if (readl(hpriv->mmio + ahci_remap_dcc(i))
1538 				!= PCI_CLASS_STORAGE_EXPRESS)
1539 			continue;
1540 
1541 		/* We've found a remapped device */
1542 		count++;
1543 	}
1544 
1545 	if (!count)
1546 		return;
1547 
1548 	dev_warn(&pdev->dev, "Found %d remapped NVMe devices.\n", count);
1549 	dev_warn(&pdev->dev,
1550 		 "Switch your BIOS from RAID to AHCI mode to use them.\n");
1551 
1552 	/*
1553 	 * Don't rely on the msi-x capability in the remap case,
1554 	 * share the legacy interrupt across ahci and remapped devices.
1555 	 */
1556 	hpriv->flags |= AHCI_HFLAG_NO_MSI;
1557 }
1558 
1559 static int ahci_get_irq_vector(struct ata_host *host, int port)
1560 {
1561 	return pci_irq_vector(to_pci_dev(host->dev), port);
1562 }
1563 
1564 static int ahci_init_msi(struct pci_dev *pdev, unsigned int n_ports,
1565 			struct ahci_host_priv *hpriv)
1566 {
1567 	int nvec;
1568 
1569 	if (hpriv->flags & AHCI_HFLAG_NO_MSI)
1570 		return -ENODEV;
1571 
1572 	/*
1573 	 * If number of MSIs is less than number of ports then Sharing Last
1574 	 * Message mode could be enforced. In this case assume that advantage
1575 	 * of multipe MSIs is negated and use single MSI mode instead.
1576 	 */
1577 	if (n_ports > 1) {
1578 		nvec = pci_alloc_irq_vectors(pdev, n_ports, INT_MAX,
1579 				PCI_IRQ_MSIX | PCI_IRQ_MSI);
1580 		if (nvec > 0) {
1581 			if (!(readl(hpriv->mmio + HOST_CTL) & HOST_MRSM)) {
1582 				hpriv->get_irq_vector = ahci_get_irq_vector;
1583 				hpriv->flags |= AHCI_HFLAG_MULTI_MSI;
1584 				return nvec;
1585 			}
1586 
1587 			/*
1588 			 * Fallback to single MSI mode if the controller
1589 			 * enforced MRSM mode.
1590 			 */
1591 			printk(KERN_INFO
1592 				"ahci: MRSM is on, fallback to single MSI\n");
1593 			pci_free_irq_vectors(pdev);
1594 		}
1595 	}
1596 
1597 	/*
1598 	 * If the host is not capable of supporting per-port vectors, fall
1599 	 * back to single MSI before finally attempting single MSI-X.
1600 	 */
1601 	nvec = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSI);
1602 	if (nvec == 1)
1603 		return nvec;
1604 	return pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSIX);
1605 }
1606 
1607 static void ahci_update_initial_lpm_policy(struct ata_port *ap,
1608 					   struct ahci_host_priv *hpriv)
1609 {
1610 	int policy = CONFIG_SATA_MOBILE_LPM_POLICY;
1611 
1612 
1613 	/* Ignore processing for non mobile platforms */
1614 	if (!(hpriv->flags & AHCI_HFLAG_IS_MOBILE))
1615 		return;
1616 
1617 	/* user modified policy via module param */
1618 	if (mobile_lpm_policy != -1) {
1619 		policy = mobile_lpm_policy;
1620 		goto update_policy;
1621 	}
1622 
1623 #ifdef CONFIG_ACPI
1624 	if (policy > ATA_LPM_MED_POWER &&
1625 	    (acpi_gbl_FADT.flags & ACPI_FADT_LOW_POWER_S0)) {
1626 		if (hpriv->cap & HOST_CAP_PART)
1627 			policy = ATA_LPM_MIN_POWER_WITH_PARTIAL;
1628 		else if (hpriv->cap & HOST_CAP_SSC)
1629 			policy = ATA_LPM_MIN_POWER;
1630 	}
1631 #endif
1632 
1633 update_policy:
1634 	if (policy >= ATA_LPM_UNKNOWN && policy <= ATA_LPM_MIN_POWER)
1635 		ap->target_lpm_policy = policy;
1636 }
1637 
1638 static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
1639 {
1640 	unsigned int board_id = ent->driver_data;
1641 	struct ata_port_info pi = ahci_port_info[board_id];
1642 	const struct ata_port_info *ppi[] = { &pi, NULL };
1643 	struct device *dev = &pdev->dev;
1644 	struct ahci_host_priv *hpriv;
1645 	struct ata_host *host;
1646 	int n_ports, i, rc;
1647 	int ahci_pci_bar = AHCI_PCI_BAR_STANDARD;
1648 
1649 	VPRINTK("ENTER\n");
1650 
1651 	WARN_ON((int)ATA_MAX_QUEUE > AHCI_MAX_CMDS);
1652 
1653 	ata_print_version_once(&pdev->dev, DRV_VERSION);
1654 
1655 	/* The AHCI driver can only drive the SATA ports, the PATA driver
1656 	   can drive them all so if both drivers are selected make sure
1657 	   AHCI stays out of the way */
1658 	if (pdev->vendor == PCI_VENDOR_ID_MARVELL && !marvell_enable)
1659 		return -ENODEV;
1660 
1661 	/* Apple BIOS on MCP89 prevents us using AHCI */
1662 	if (is_mcp89_apple(pdev))
1663 		ahci_mcp89_apple_enable(pdev);
1664 
1665 	/* Promise's PDC42819 is a SAS/SATA controller that has an AHCI mode.
1666 	 * At the moment, we can only use the AHCI mode. Let the users know
1667 	 * that for SAS drives they're out of luck.
1668 	 */
1669 	if (pdev->vendor == PCI_VENDOR_ID_PROMISE)
1670 		dev_info(&pdev->dev,
1671 			 "PDC42819 can only drive SATA devices with this driver\n");
1672 
1673 	/* Some devices use non-standard BARs */
1674 	if (pdev->vendor == PCI_VENDOR_ID_STMICRO && pdev->device == 0xCC06)
1675 		ahci_pci_bar = AHCI_PCI_BAR_STA2X11;
1676 	else if (pdev->vendor == 0x1c44 && pdev->device == 0x8000)
1677 		ahci_pci_bar = AHCI_PCI_BAR_ENMOTUS;
1678 	else if (pdev->vendor == PCI_VENDOR_ID_CAVIUM) {
1679 		if (pdev->device == 0xa01c)
1680 			ahci_pci_bar = AHCI_PCI_BAR_CAVIUM;
1681 		if (pdev->device == 0xa084)
1682 			ahci_pci_bar = AHCI_PCI_BAR_CAVIUM_GEN5;
1683 	}
1684 
1685 	/* acquire resources */
1686 	rc = pcim_enable_device(pdev);
1687 	if (rc)
1688 		return rc;
1689 
1690 	if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
1691 	    (pdev->device == 0x2652 || pdev->device == 0x2653)) {
1692 		u8 map;
1693 
1694 		/* ICH6s share the same PCI ID for both piix and ahci
1695 		 * modes.  Enabling ahci mode while MAP indicates
1696 		 * combined mode is a bad idea.  Yield to ata_piix.
1697 		 */
1698 		pci_read_config_byte(pdev, ICH_MAP, &map);
1699 		if (map & 0x3) {
1700 			dev_info(&pdev->dev,
1701 				 "controller is in combined mode, can't enable AHCI mode\n");
1702 			return -ENODEV;
1703 		}
1704 	}
1705 
1706 	/* AHCI controllers often implement SFF compatible interface.
1707 	 * Grab all PCI BARs just in case.
1708 	 */
1709 	rc = pcim_iomap_regions_request_all(pdev, 1 << ahci_pci_bar, DRV_NAME);
1710 	if (rc == -EBUSY)
1711 		pcim_pin_device(pdev);
1712 	if (rc)
1713 		return rc;
1714 
1715 	hpriv = devm_kzalloc(dev, sizeof(*hpriv), GFP_KERNEL);
1716 	if (!hpriv)
1717 		return -ENOMEM;
1718 	hpriv->flags |= (unsigned long)pi.private_data;
1719 
1720 	/* MCP65 revision A1 and A2 can't do MSI */
1721 	if (board_id == board_ahci_mcp65 &&
1722 	    (pdev->revision == 0xa1 || pdev->revision == 0xa2))
1723 		hpriv->flags |= AHCI_HFLAG_NO_MSI;
1724 
1725 	/* SB800 does NOT need the workaround to ignore SERR_INTERNAL */
1726 	if (board_id == board_ahci_sb700 && pdev->revision >= 0x40)
1727 		hpriv->flags &= ~AHCI_HFLAG_IGN_SERR_INTERNAL;
1728 
1729 	/* only some SB600s can do 64bit DMA */
1730 	if (ahci_sb600_enable_64bit(pdev))
1731 		hpriv->flags &= ~AHCI_HFLAG_32BIT_ONLY;
1732 
1733 	hpriv->mmio = pcim_iomap_table(pdev)[ahci_pci_bar];
1734 
1735 	/* detect remapped nvme devices */
1736 	ahci_remap_check(pdev, ahci_pci_bar, hpriv);
1737 
1738 	/* must set flag prior to save config in order to take effect */
1739 	if (ahci_broken_devslp(pdev))
1740 		hpriv->flags |= AHCI_HFLAG_NO_DEVSLP;
1741 
1742 #ifdef CONFIG_ARM64
1743 	if (pdev->vendor == 0x177d && pdev->device == 0xa01c)
1744 		hpriv->irq_handler = ahci_thunderx_irq_handler;
1745 #endif
1746 
1747 	/* save initial config */
1748 	ahci_pci_save_initial_config(pdev, hpriv);
1749 
1750 	/* prepare host */
1751 	if (hpriv->cap & HOST_CAP_NCQ) {
1752 		pi.flags |= ATA_FLAG_NCQ;
1753 		/*
1754 		 * Auto-activate optimization is supposed to be
1755 		 * supported on all AHCI controllers indicating NCQ
1756 		 * capability, but it seems to be broken on some
1757 		 * chipsets including NVIDIAs.
1758 		 */
1759 		if (!(hpriv->flags & AHCI_HFLAG_NO_FPDMA_AA))
1760 			pi.flags |= ATA_FLAG_FPDMA_AA;
1761 
1762 		/*
1763 		 * All AHCI controllers should be forward-compatible
1764 		 * with the new auxiliary field. This code should be
1765 		 * conditionalized if any buggy AHCI controllers are
1766 		 * encountered.
1767 		 */
1768 		pi.flags |= ATA_FLAG_FPDMA_AUX;
1769 	}
1770 
1771 	if (hpriv->cap & HOST_CAP_PMP)
1772 		pi.flags |= ATA_FLAG_PMP;
1773 
1774 	ahci_set_em_messages(hpriv, &pi);
1775 
1776 	if (ahci_broken_system_poweroff(pdev)) {
1777 		pi.flags |= ATA_FLAG_NO_POWEROFF_SPINDOWN;
1778 		dev_info(&pdev->dev,
1779 			"quirky BIOS, skipping spindown on poweroff\n");
1780 	}
1781 
1782 	if (ahci_broken_lpm(pdev)) {
1783 		pi.flags |= ATA_FLAG_NO_LPM;
1784 		dev_warn(&pdev->dev,
1785 			 "BIOS update required for Link Power Management support\n");
1786 	}
1787 
1788 	if (ahci_broken_suspend(pdev)) {
1789 		hpriv->flags |= AHCI_HFLAG_NO_SUSPEND;
1790 		dev_warn(&pdev->dev,
1791 			 "BIOS update required for suspend/resume\n");
1792 	}
1793 
1794 	if (ahci_broken_online(pdev)) {
1795 		hpriv->flags |= AHCI_HFLAG_SRST_TOUT_IS_OFFLINE;
1796 		dev_info(&pdev->dev,
1797 			 "online status unreliable, applying workaround\n");
1798 	}
1799 
1800 
1801 	/* Acer SA5-271 workaround modifies private_data */
1802 	acer_sa5_271_workaround(hpriv, pdev);
1803 
1804 	/* CAP.NP sometimes indicate the index of the last enabled
1805 	 * port, at other times, that of the last possible port, so
1806 	 * determining the maximum port number requires looking at
1807 	 * both CAP.NP and port_map.
1808 	 */
1809 	n_ports = max(ahci_nr_ports(hpriv->cap), fls(hpriv->port_map));
1810 
1811 	host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
1812 	if (!host)
1813 		return -ENOMEM;
1814 	host->private_data = hpriv;
1815 
1816 	if (ahci_init_msi(pdev, n_ports, hpriv) < 0) {
1817 		/* legacy intx interrupts */
1818 		pci_intx(pdev, 1);
1819 	}
1820 	hpriv->irq = pci_irq_vector(pdev, 0);
1821 
1822 	if (!(hpriv->cap & HOST_CAP_SSS) || ahci_ignore_sss)
1823 		host->flags |= ATA_HOST_PARALLEL_SCAN;
1824 	else
1825 		dev_info(&pdev->dev, "SSS flag set, parallel bus scan disabled\n");
1826 
1827 	if (pi.flags & ATA_FLAG_EM)
1828 		ahci_reset_em(host);
1829 
1830 	for (i = 0; i < host->n_ports; i++) {
1831 		struct ata_port *ap = host->ports[i];
1832 
1833 		ata_port_pbar_desc(ap, ahci_pci_bar, -1, "abar");
1834 		ata_port_pbar_desc(ap, ahci_pci_bar,
1835 				   0x100 + ap->port_no * 0x80, "port");
1836 
1837 		/* set enclosure management message type */
1838 		if (ap->flags & ATA_FLAG_EM)
1839 			ap->em_message_type = hpriv->em_msg_type;
1840 
1841 		ahci_update_initial_lpm_policy(ap, hpriv);
1842 
1843 		/* disabled/not-implemented port */
1844 		if (!(hpriv->port_map & (1 << i)))
1845 			ap->ops = &ata_dummy_port_ops;
1846 	}
1847 
1848 	/* apply workaround for ASUS P5W DH Deluxe mainboard */
1849 	ahci_p5wdh_workaround(host);
1850 
1851 	/* apply gtf filter quirk */
1852 	ahci_gtf_filter_workaround(host);
1853 
1854 	/* initialize adapter */
1855 	rc = ahci_configure_dma_masks(pdev, hpriv->cap & HOST_CAP_64);
1856 	if (rc)
1857 		return rc;
1858 
1859 	rc = ahci_pci_reset_controller(host);
1860 	if (rc)
1861 		return rc;
1862 
1863 	ahci_pci_init_controller(host);
1864 	ahci_pci_print_info(host);
1865 
1866 	pci_set_master(pdev);
1867 
1868 	rc = ahci_host_activate(host, &ahci_sht);
1869 	if (rc)
1870 		return rc;
1871 
1872 	pm_runtime_put_noidle(&pdev->dev);
1873 	return 0;
1874 }
1875 
1876 static void ahci_remove_one(struct pci_dev *pdev)
1877 {
1878 	pm_runtime_get_noresume(&pdev->dev);
1879 	ata_pci_remove_one(pdev);
1880 }
1881 
1882 module_pci_driver(ahci_pci_driver);
1883 
1884 MODULE_AUTHOR("Jeff Garzik");
1885 MODULE_DESCRIPTION("AHCI SATA low-level driver");
1886 MODULE_LICENSE("GPL");
1887 MODULE_DEVICE_TABLE(pci, ahci_pci_tbl);
1888 MODULE_VERSION(DRV_VERSION);
1889