xref: /linux/drivers/ata/ahci.c (revision 2dbc0838bcf24ca59cabc3130cf3b1d6809cdcd4)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *  ahci.c - AHCI SATA support
4  *
5  *  Maintained by:  Tejun Heo <tj@kernel.org>
6  *    		    Please ALWAYS copy linux-ide@vger.kernel.org
7  *		    on emails.
8  *
9  *  Copyright 2004-2005 Red Hat, Inc.
10  *
11  * libata documentation is available via 'make {ps|pdf}docs',
12  * as Documentation/driver-api/libata.rst
13  *
14  * AHCI hardware documentation:
15  * http://www.intel.com/technology/serialata/pdf/rev1_0.pdf
16  * http://www.intel.com/technology/serialata/pdf/rev1_1.pdf
17  */
18 
19 #include <linux/kernel.h>
20 #include <linux/module.h>
21 #include <linux/pci.h>
22 #include <linux/blkdev.h>
23 #include <linux/delay.h>
24 #include <linux/interrupt.h>
25 #include <linux/dma-mapping.h>
26 #include <linux/device.h>
27 #include <linux/dmi.h>
28 #include <linux/gfp.h>
29 #include <linux/msi.h>
30 #include <scsi/scsi_host.h>
31 #include <scsi/scsi_cmnd.h>
32 #include <linux/libata.h>
33 #include <linux/ahci-remap.h>
34 #include <linux/io-64-nonatomic-lo-hi.h>
35 #include "ahci.h"
36 
37 #define DRV_NAME	"ahci"
38 #define DRV_VERSION	"3.0"
39 
40 enum {
41 	AHCI_PCI_BAR_STA2X11	= 0,
42 	AHCI_PCI_BAR_CAVIUM	= 0,
43 	AHCI_PCI_BAR_ENMOTUS	= 2,
44 	AHCI_PCI_BAR_CAVIUM_GEN5	= 4,
45 	AHCI_PCI_BAR_STANDARD	= 5,
46 };
47 
48 enum board_ids {
49 	/* board IDs by feature in alphabetical order */
50 	board_ahci,
51 	board_ahci_ign_iferr,
52 	board_ahci_mobile,
53 	board_ahci_nomsi,
54 	board_ahci_noncq,
55 	board_ahci_nosntf,
56 	board_ahci_yes_fbs,
57 
58 	/* board IDs for specific chipsets in alphabetical order */
59 	board_ahci_avn,
60 	board_ahci_mcp65,
61 	board_ahci_mcp77,
62 	board_ahci_mcp89,
63 	board_ahci_mv,
64 	board_ahci_sb600,
65 	board_ahci_sb700,	/* for SB700 and SB800 */
66 	board_ahci_vt8251,
67 
68 	/* aliases */
69 	board_ahci_mcp_linux	= board_ahci_mcp65,
70 	board_ahci_mcp67	= board_ahci_mcp65,
71 	board_ahci_mcp73	= board_ahci_mcp65,
72 	board_ahci_mcp79	= board_ahci_mcp77,
73 };
74 
75 static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
76 static void ahci_remove_one(struct pci_dev *dev);
77 static int ahci_vt8251_hardreset(struct ata_link *link, unsigned int *class,
78 				 unsigned long deadline);
79 static int ahci_avn_hardreset(struct ata_link *link, unsigned int *class,
80 			      unsigned long deadline);
81 static void ahci_mcp89_apple_enable(struct pci_dev *pdev);
82 static bool is_mcp89_apple(struct pci_dev *pdev);
83 static int ahci_p5wdh_hardreset(struct ata_link *link, unsigned int *class,
84 				unsigned long deadline);
85 #ifdef CONFIG_PM
86 static int ahci_pci_device_runtime_suspend(struct device *dev);
87 static int ahci_pci_device_runtime_resume(struct device *dev);
88 #ifdef CONFIG_PM_SLEEP
89 static int ahci_pci_device_suspend(struct device *dev);
90 static int ahci_pci_device_resume(struct device *dev);
91 #endif
92 #endif /* CONFIG_PM */
93 
94 static struct scsi_host_template ahci_sht = {
95 	AHCI_SHT("ahci"),
96 };
97 
98 static struct ata_port_operations ahci_vt8251_ops = {
99 	.inherits		= &ahci_ops,
100 	.hardreset		= ahci_vt8251_hardreset,
101 };
102 
103 static struct ata_port_operations ahci_p5wdh_ops = {
104 	.inherits		= &ahci_ops,
105 	.hardreset		= ahci_p5wdh_hardreset,
106 };
107 
108 static struct ata_port_operations ahci_avn_ops = {
109 	.inherits		= &ahci_ops,
110 	.hardreset		= ahci_avn_hardreset,
111 };
112 
113 static const struct ata_port_info ahci_port_info[] = {
114 	/* by features */
115 	[board_ahci] = {
116 		.flags		= AHCI_FLAG_COMMON,
117 		.pio_mask	= ATA_PIO4,
118 		.udma_mask	= ATA_UDMA6,
119 		.port_ops	= &ahci_ops,
120 	},
121 	[board_ahci_ign_iferr] = {
122 		AHCI_HFLAGS	(AHCI_HFLAG_IGN_IRQ_IF_ERR),
123 		.flags		= AHCI_FLAG_COMMON,
124 		.pio_mask	= ATA_PIO4,
125 		.udma_mask	= ATA_UDMA6,
126 		.port_ops	= &ahci_ops,
127 	},
128 	[board_ahci_mobile] = {
129 		AHCI_HFLAGS	(AHCI_HFLAG_IS_MOBILE),
130 		.flags		= AHCI_FLAG_COMMON,
131 		.pio_mask	= ATA_PIO4,
132 		.udma_mask	= ATA_UDMA6,
133 		.port_ops	= &ahci_ops,
134 	},
135 	[board_ahci_nomsi] = {
136 		AHCI_HFLAGS	(AHCI_HFLAG_NO_MSI),
137 		.flags		= AHCI_FLAG_COMMON,
138 		.pio_mask	= ATA_PIO4,
139 		.udma_mask	= ATA_UDMA6,
140 		.port_ops	= &ahci_ops,
141 	},
142 	[board_ahci_noncq] = {
143 		AHCI_HFLAGS	(AHCI_HFLAG_NO_NCQ),
144 		.flags		= AHCI_FLAG_COMMON,
145 		.pio_mask	= ATA_PIO4,
146 		.udma_mask	= ATA_UDMA6,
147 		.port_ops	= &ahci_ops,
148 	},
149 	[board_ahci_nosntf] = {
150 		AHCI_HFLAGS	(AHCI_HFLAG_NO_SNTF),
151 		.flags		= AHCI_FLAG_COMMON,
152 		.pio_mask	= ATA_PIO4,
153 		.udma_mask	= ATA_UDMA6,
154 		.port_ops	= &ahci_ops,
155 	},
156 	[board_ahci_yes_fbs] = {
157 		AHCI_HFLAGS	(AHCI_HFLAG_YES_FBS),
158 		.flags		= AHCI_FLAG_COMMON,
159 		.pio_mask	= ATA_PIO4,
160 		.udma_mask	= ATA_UDMA6,
161 		.port_ops	= &ahci_ops,
162 	},
163 	/* by chipsets */
164 	[board_ahci_avn] = {
165 		.flags		= AHCI_FLAG_COMMON,
166 		.pio_mask	= ATA_PIO4,
167 		.udma_mask	= ATA_UDMA6,
168 		.port_ops	= &ahci_avn_ops,
169 	},
170 	[board_ahci_mcp65] = {
171 		AHCI_HFLAGS	(AHCI_HFLAG_NO_FPDMA_AA | AHCI_HFLAG_NO_PMP |
172 				 AHCI_HFLAG_YES_NCQ),
173 		.flags		= AHCI_FLAG_COMMON | ATA_FLAG_NO_DIPM,
174 		.pio_mask	= ATA_PIO4,
175 		.udma_mask	= ATA_UDMA6,
176 		.port_ops	= &ahci_ops,
177 	},
178 	[board_ahci_mcp77] = {
179 		AHCI_HFLAGS	(AHCI_HFLAG_NO_FPDMA_AA | AHCI_HFLAG_NO_PMP),
180 		.flags		= AHCI_FLAG_COMMON,
181 		.pio_mask	= ATA_PIO4,
182 		.udma_mask	= ATA_UDMA6,
183 		.port_ops	= &ahci_ops,
184 	},
185 	[board_ahci_mcp89] = {
186 		AHCI_HFLAGS	(AHCI_HFLAG_NO_FPDMA_AA),
187 		.flags		= AHCI_FLAG_COMMON,
188 		.pio_mask	= ATA_PIO4,
189 		.udma_mask	= ATA_UDMA6,
190 		.port_ops	= &ahci_ops,
191 	},
192 	[board_ahci_mv] = {
193 		AHCI_HFLAGS	(AHCI_HFLAG_NO_NCQ | AHCI_HFLAG_NO_MSI |
194 				 AHCI_HFLAG_MV_PATA | AHCI_HFLAG_NO_PMP),
195 		.flags		= ATA_FLAG_SATA | ATA_FLAG_PIO_DMA,
196 		.pio_mask	= ATA_PIO4,
197 		.udma_mask	= ATA_UDMA6,
198 		.port_ops	= &ahci_ops,
199 	},
200 	[board_ahci_sb600] = {
201 		AHCI_HFLAGS	(AHCI_HFLAG_IGN_SERR_INTERNAL |
202 				 AHCI_HFLAG_NO_MSI | AHCI_HFLAG_SECT255 |
203 				 AHCI_HFLAG_32BIT_ONLY),
204 		.flags		= AHCI_FLAG_COMMON,
205 		.pio_mask	= ATA_PIO4,
206 		.udma_mask	= ATA_UDMA6,
207 		.port_ops	= &ahci_pmp_retry_srst_ops,
208 	},
209 	[board_ahci_sb700] = {	/* for SB700 and SB800 */
210 		AHCI_HFLAGS	(AHCI_HFLAG_IGN_SERR_INTERNAL),
211 		.flags		= AHCI_FLAG_COMMON,
212 		.pio_mask	= ATA_PIO4,
213 		.udma_mask	= ATA_UDMA6,
214 		.port_ops	= &ahci_pmp_retry_srst_ops,
215 	},
216 	[board_ahci_vt8251] = {
217 		AHCI_HFLAGS	(AHCI_HFLAG_NO_NCQ | AHCI_HFLAG_NO_PMP),
218 		.flags		= AHCI_FLAG_COMMON,
219 		.pio_mask	= ATA_PIO4,
220 		.udma_mask	= ATA_UDMA6,
221 		.port_ops	= &ahci_vt8251_ops,
222 	},
223 };
224 
225 static const struct pci_device_id ahci_pci_tbl[] = {
226 	/* Intel */
227 	{ PCI_VDEVICE(INTEL, 0x2652), board_ahci }, /* ICH6 */
228 	{ PCI_VDEVICE(INTEL, 0x2653), board_ahci }, /* ICH6M */
229 	{ PCI_VDEVICE(INTEL, 0x27c1), board_ahci }, /* ICH7 */
230 	{ PCI_VDEVICE(INTEL, 0x27c5), board_ahci }, /* ICH7M */
231 	{ PCI_VDEVICE(INTEL, 0x27c3), board_ahci }, /* ICH7R */
232 	{ PCI_VDEVICE(AL, 0x5288), board_ahci_ign_iferr }, /* ULi M5288 */
233 	{ PCI_VDEVICE(INTEL, 0x2681), board_ahci }, /* ESB2 */
234 	{ PCI_VDEVICE(INTEL, 0x2682), board_ahci }, /* ESB2 */
235 	{ PCI_VDEVICE(INTEL, 0x2683), board_ahci }, /* ESB2 */
236 	{ PCI_VDEVICE(INTEL, 0x27c6), board_ahci }, /* ICH7-M DH */
237 	{ PCI_VDEVICE(INTEL, 0x2821), board_ahci }, /* ICH8 */
238 	{ PCI_VDEVICE(INTEL, 0x2822), board_ahci_nosntf }, /* ICH8 */
239 	{ PCI_VDEVICE(INTEL, 0x2824), board_ahci }, /* ICH8 */
240 	{ PCI_VDEVICE(INTEL, 0x2829), board_ahci }, /* ICH8M */
241 	{ PCI_VDEVICE(INTEL, 0x282a), board_ahci }, /* ICH8M */
242 	{ PCI_VDEVICE(INTEL, 0x2922), board_ahci }, /* ICH9 */
243 	{ PCI_VDEVICE(INTEL, 0x2923), board_ahci }, /* ICH9 */
244 	{ PCI_VDEVICE(INTEL, 0x2924), board_ahci }, /* ICH9 */
245 	{ PCI_VDEVICE(INTEL, 0x2925), board_ahci }, /* ICH9 */
246 	{ PCI_VDEVICE(INTEL, 0x2927), board_ahci }, /* ICH9 */
247 	{ PCI_VDEVICE(INTEL, 0x2929), board_ahci_mobile }, /* ICH9M */
248 	{ PCI_VDEVICE(INTEL, 0x292a), board_ahci_mobile }, /* ICH9M */
249 	{ PCI_VDEVICE(INTEL, 0x292b), board_ahci_mobile }, /* ICH9M */
250 	{ PCI_VDEVICE(INTEL, 0x292c), board_ahci_mobile }, /* ICH9M */
251 	{ PCI_VDEVICE(INTEL, 0x292f), board_ahci_mobile }, /* ICH9M */
252 	{ PCI_VDEVICE(INTEL, 0x294d), board_ahci }, /* ICH9 */
253 	{ PCI_VDEVICE(INTEL, 0x294e), board_ahci_mobile }, /* ICH9M */
254 	{ PCI_VDEVICE(INTEL, 0x502a), board_ahci }, /* Tolapai */
255 	{ PCI_VDEVICE(INTEL, 0x502b), board_ahci }, /* Tolapai */
256 	{ PCI_VDEVICE(INTEL, 0x3a05), board_ahci }, /* ICH10 */
257 	{ PCI_VDEVICE(INTEL, 0x3a22), board_ahci }, /* ICH10 */
258 	{ PCI_VDEVICE(INTEL, 0x3a25), board_ahci }, /* ICH10 */
259 	{ PCI_VDEVICE(INTEL, 0x3b22), board_ahci }, /* PCH AHCI */
260 	{ PCI_VDEVICE(INTEL, 0x3b23), board_ahci }, /* PCH AHCI */
261 	{ PCI_VDEVICE(INTEL, 0x3b24), board_ahci }, /* PCH RAID */
262 	{ PCI_VDEVICE(INTEL, 0x3b25), board_ahci }, /* PCH RAID */
263 	{ PCI_VDEVICE(INTEL, 0x3b29), board_ahci_mobile }, /* PCH M AHCI */
264 	{ PCI_VDEVICE(INTEL, 0x3b2b), board_ahci }, /* PCH RAID */
265 	{ PCI_VDEVICE(INTEL, 0x3b2c), board_ahci_mobile }, /* PCH M RAID */
266 	{ PCI_VDEVICE(INTEL, 0x3b2f), board_ahci }, /* PCH AHCI */
267 	{ PCI_VDEVICE(INTEL, 0x19b0), board_ahci }, /* DNV AHCI */
268 	{ PCI_VDEVICE(INTEL, 0x19b1), board_ahci }, /* DNV AHCI */
269 	{ PCI_VDEVICE(INTEL, 0x19b2), board_ahci }, /* DNV AHCI */
270 	{ PCI_VDEVICE(INTEL, 0x19b3), board_ahci }, /* DNV AHCI */
271 	{ PCI_VDEVICE(INTEL, 0x19b4), board_ahci }, /* DNV AHCI */
272 	{ PCI_VDEVICE(INTEL, 0x19b5), board_ahci }, /* DNV AHCI */
273 	{ PCI_VDEVICE(INTEL, 0x19b6), board_ahci }, /* DNV AHCI */
274 	{ PCI_VDEVICE(INTEL, 0x19b7), board_ahci }, /* DNV AHCI */
275 	{ PCI_VDEVICE(INTEL, 0x19bE), board_ahci }, /* DNV AHCI */
276 	{ PCI_VDEVICE(INTEL, 0x19bF), board_ahci }, /* DNV AHCI */
277 	{ PCI_VDEVICE(INTEL, 0x19c0), board_ahci }, /* DNV AHCI */
278 	{ PCI_VDEVICE(INTEL, 0x19c1), board_ahci }, /* DNV AHCI */
279 	{ PCI_VDEVICE(INTEL, 0x19c2), board_ahci }, /* DNV AHCI */
280 	{ PCI_VDEVICE(INTEL, 0x19c3), board_ahci }, /* DNV AHCI */
281 	{ PCI_VDEVICE(INTEL, 0x19c4), board_ahci }, /* DNV AHCI */
282 	{ PCI_VDEVICE(INTEL, 0x19c5), board_ahci }, /* DNV AHCI */
283 	{ PCI_VDEVICE(INTEL, 0x19c6), board_ahci }, /* DNV AHCI */
284 	{ PCI_VDEVICE(INTEL, 0x19c7), board_ahci }, /* DNV AHCI */
285 	{ PCI_VDEVICE(INTEL, 0x19cE), board_ahci }, /* DNV AHCI */
286 	{ PCI_VDEVICE(INTEL, 0x19cF), board_ahci }, /* DNV AHCI */
287 	{ PCI_VDEVICE(INTEL, 0x1c02), board_ahci }, /* CPT AHCI */
288 	{ PCI_VDEVICE(INTEL, 0x1c03), board_ahci_mobile }, /* CPT M AHCI */
289 	{ PCI_VDEVICE(INTEL, 0x1c04), board_ahci }, /* CPT RAID */
290 	{ PCI_VDEVICE(INTEL, 0x1c05), board_ahci_mobile }, /* CPT M RAID */
291 	{ PCI_VDEVICE(INTEL, 0x1c06), board_ahci }, /* CPT RAID */
292 	{ PCI_VDEVICE(INTEL, 0x1c07), board_ahci }, /* CPT RAID */
293 	{ PCI_VDEVICE(INTEL, 0x1d02), board_ahci }, /* PBG AHCI */
294 	{ PCI_VDEVICE(INTEL, 0x1d04), board_ahci }, /* PBG RAID */
295 	{ PCI_VDEVICE(INTEL, 0x1d06), board_ahci }, /* PBG RAID */
296 	{ PCI_VDEVICE(INTEL, 0x2826), board_ahci }, /* PBG RAID */
297 	{ PCI_VDEVICE(INTEL, 0x2323), board_ahci }, /* DH89xxCC AHCI */
298 	{ PCI_VDEVICE(INTEL, 0x1e02), board_ahci }, /* Panther Point AHCI */
299 	{ PCI_VDEVICE(INTEL, 0x1e03), board_ahci_mobile }, /* Panther M AHCI */
300 	{ PCI_VDEVICE(INTEL, 0x1e04), board_ahci }, /* Panther Point RAID */
301 	{ PCI_VDEVICE(INTEL, 0x1e05), board_ahci }, /* Panther Point RAID */
302 	{ PCI_VDEVICE(INTEL, 0x1e06), board_ahci }, /* Panther Point RAID */
303 	{ PCI_VDEVICE(INTEL, 0x1e07), board_ahci_mobile }, /* Panther M RAID */
304 	{ PCI_VDEVICE(INTEL, 0x1e0e), board_ahci }, /* Panther Point RAID */
305 	{ PCI_VDEVICE(INTEL, 0x8c02), board_ahci }, /* Lynx Point AHCI */
306 	{ PCI_VDEVICE(INTEL, 0x8c03), board_ahci_mobile }, /* Lynx M AHCI */
307 	{ PCI_VDEVICE(INTEL, 0x8c04), board_ahci }, /* Lynx Point RAID */
308 	{ PCI_VDEVICE(INTEL, 0x8c05), board_ahci_mobile }, /* Lynx M RAID */
309 	{ PCI_VDEVICE(INTEL, 0x8c06), board_ahci }, /* Lynx Point RAID */
310 	{ PCI_VDEVICE(INTEL, 0x8c07), board_ahci_mobile }, /* Lynx M RAID */
311 	{ PCI_VDEVICE(INTEL, 0x8c0e), board_ahci }, /* Lynx Point RAID */
312 	{ PCI_VDEVICE(INTEL, 0x8c0f), board_ahci_mobile }, /* Lynx M RAID */
313 	{ PCI_VDEVICE(INTEL, 0x9c02), board_ahci_mobile }, /* Lynx LP AHCI */
314 	{ PCI_VDEVICE(INTEL, 0x9c03), board_ahci_mobile }, /* Lynx LP AHCI */
315 	{ PCI_VDEVICE(INTEL, 0x9c04), board_ahci_mobile }, /* Lynx LP RAID */
316 	{ PCI_VDEVICE(INTEL, 0x9c05), board_ahci_mobile }, /* Lynx LP RAID */
317 	{ PCI_VDEVICE(INTEL, 0x9c06), board_ahci_mobile }, /* Lynx LP RAID */
318 	{ PCI_VDEVICE(INTEL, 0x9c07), board_ahci_mobile }, /* Lynx LP RAID */
319 	{ PCI_VDEVICE(INTEL, 0x9c0e), board_ahci_mobile }, /* Lynx LP RAID */
320 	{ PCI_VDEVICE(INTEL, 0x9c0f), board_ahci_mobile }, /* Lynx LP RAID */
321 	{ PCI_VDEVICE(INTEL, 0x9dd3), board_ahci_mobile }, /* Cannon Lake PCH-LP AHCI */
322 	{ PCI_VDEVICE(INTEL, 0x1f22), board_ahci }, /* Avoton AHCI */
323 	{ PCI_VDEVICE(INTEL, 0x1f23), board_ahci }, /* Avoton AHCI */
324 	{ PCI_VDEVICE(INTEL, 0x1f24), board_ahci }, /* Avoton RAID */
325 	{ PCI_VDEVICE(INTEL, 0x1f25), board_ahci }, /* Avoton RAID */
326 	{ PCI_VDEVICE(INTEL, 0x1f26), board_ahci }, /* Avoton RAID */
327 	{ PCI_VDEVICE(INTEL, 0x1f27), board_ahci }, /* Avoton RAID */
328 	{ PCI_VDEVICE(INTEL, 0x1f2e), board_ahci }, /* Avoton RAID */
329 	{ PCI_VDEVICE(INTEL, 0x1f2f), board_ahci }, /* Avoton RAID */
330 	{ PCI_VDEVICE(INTEL, 0x1f32), board_ahci_avn }, /* Avoton AHCI */
331 	{ PCI_VDEVICE(INTEL, 0x1f33), board_ahci_avn }, /* Avoton AHCI */
332 	{ PCI_VDEVICE(INTEL, 0x1f34), board_ahci_avn }, /* Avoton RAID */
333 	{ PCI_VDEVICE(INTEL, 0x1f35), board_ahci_avn }, /* Avoton RAID */
334 	{ PCI_VDEVICE(INTEL, 0x1f36), board_ahci_avn }, /* Avoton RAID */
335 	{ PCI_VDEVICE(INTEL, 0x1f37), board_ahci_avn }, /* Avoton RAID */
336 	{ PCI_VDEVICE(INTEL, 0x1f3e), board_ahci_avn }, /* Avoton RAID */
337 	{ PCI_VDEVICE(INTEL, 0x1f3f), board_ahci_avn }, /* Avoton RAID */
338 	{ PCI_VDEVICE(INTEL, 0x2823), board_ahci }, /* Wellsburg RAID */
339 	{ PCI_VDEVICE(INTEL, 0x2827), board_ahci }, /* Wellsburg RAID */
340 	{ PCI_VDEVICE(INTEL, 0x8d02), board_ahci }, /* Wellsburg AHCI */
341 	{ PCI_VDEVICE(INTEL, 0x8d04), board_ahci }, /* Wellsburg RAID */
342 	{ PCI_VDEVICE(INTEL, 0x8d06), board_ahci }, /* Wellsburg RAID */
343 	{ PCI_VDEVICE(INTEL, 0x8d0e), board_ahci }, /* Wellsburg RAID */
344 	{ PCI_VDEVICE(INTEL, 0x8d62), board_ahci }, /* Wellsburg AHCI */
345 	{ PCI_VDEVICE(INTEL, 0x8d64), board_ahci }, /* Wellsburg RAID */
346 	{ PCI_VDEVICE(INTEL, 0x8d66), board_ahci }, /* Wellsburg RAID */
347 	{ PCI_VDEVICE(INTEL, 0x8d6e), board_ahci }, /* Wellsburg RAID */
348 	{ PCI_VDEVICE(INTEL, 0x23a3), board_ahci }, /* Coleto Creek AHCI */
349 	{ PCI_VDEVICE(INTEL, 0x9c83), board_ahci_mobile }, /* Wildcat LP AHCI */
350 	{ PCI_VDEVICE(INTEL, 0x9c85), board_ahci_mobile }, /* Wildcat LP RAID */
351 	{ PCI_VDEVICE(INTEL, 0x9c87), board_ahci_mobile }, /* Wildcat LP RAID */
352 	{ PCI_VDEVICE(INTEL, 0x9c8f), board_ahci_mobile }, /* Wildcat LP RAID */
353 	{ PCI_VDEVICE(INTEL, 0x8c82), board_ahci }, /* 9 Series AHCI */
354 	{ PCI_VDEVICE(INTEL, 0x8c83), board_ahci_mobile }, /* 9 Series M AHCI */
355 	{ PCI_VDEVICE(INTEL, 0x8c84), board_ahci }, /* 9 Series RAID */
356 	{ PCI_VDEVICE(INTEL, 0x8c85), board_ahci_mobile }, /* 9 Series M RAID */
357 	{ PCI_VDEVICE(INTEL, 0x8c86), board_ahci }, /* 9 Series RAID */
358 	{ PCI_VDEVICE(INTEL, 0x8c87), board_ahci_mobile }, /* 9 Series M RAID */
359 	{ PCI_VDEVICE(INTEL, 0x8c8e), board_ahci }, /* 9 Series RAID */
360 	{ PCI_VDEVICE(INTEL, 0x8c8f), board_ahci_mobile }, /* 9 Series M RAID */
361 	{ PCI_VDEVICE(INTEL, 0x9d03), board_ahci_mobile }, /* Sunrise LP AHCI */
362 	{ PCI_VDEVICE(INTEL, 0x9d05), board_ahci_mobile }, /* Sunrise LP RAID */
363 	{ PCI_VDEVICE(INTEL, 0x9d07), board_ahci_mobile }, /* Sunrise LP RAID */
364 	{ PCI_VDEVICE(INTEL, 0xa102), board_ahci }, /* Sunrise Point-H AHCI */
365 	{ PCI_VDEVICE(INTEL, 0xa103), board_ahci_mobile }, /* Sunrise M AHCI */
366 	{ PCI_VDEVICE(INTEL, 0xa105), board_ahci }, /* Sunrise Point-H RAID */
367 	{ PCI_VDEVICE(INTEL, 0xa106), board_ahci }, /* Sunrise Point-H RAID */
368 	{ PCI_VDEVICE(INTEL, 0xa107), board_ahci_mobile }, /* Sunrise M RAID */
369 	{ PCI_VDEVICE(INTEL, 0xa10f), board_ahci }, /* Sunrise Point-H RAID */
370 	{ PCI_VDEVICE(INTEL, 0x2822), board_ahci }, /* Lewisburg RAID*/
371 	{ PCI_VDEVICE(INTEL, 0x2823), board_ahci }, /* Lewisburg AHCI*/
372 	{ PCI_VDEVICE(INTEL, 0x2826), board_ahci }, /* Lewisburg RAID*/
373 	{ PCI_VDEVICE(INTEL, 0x2827), board_ahci }, /* Lewisburg RAID*/
374 	{ PCI_VDEVICE(INTEL, 0xa182), board_ahci }, /* Lewisburg AHCI*/
375 	{ PCI_VDEVICE(INTEL, 0xa186), board_ahci }, /* Lewisburg RAID*/
376 	{ PCI_VDEVICE(INTEL, 0xa1d2), board_ahci }, /* Lewisburg RAID*/
377 	{ PCI_VDEVICE(INTEL, 0xa1d6), board_ahci }, /* Lewisburg RAID*/
378 	{ PCI_VDEVICE(INTEL, 0xa202), board_ahci }, /* Lewisburg AHCI*/
379 	{ PCI_VDEVICE(INTEL, 0xa206), board_ahci }, /* Lewisburg RAID*/
380 	{ PCI_VDEVICE(INTEL, 0xa252), board_ahci }, /* Lewisburg RAID*/
381 	{ PCI_VDEVICE(INTEL, 0xa256), board_ahci }, /* Lewisburg RAID*/
382 	{ PCI_VDEVICE(INTEL, 0xa356), board_ahci }, /* Cannon Lake PCH-H RAID */
383 	{ PCI_VDEVICE(INTEL, 0x0f22), board_ahci_mobile }, /* Bay Trail AHCI */
384 	{ PCI_VDEVICE(INTEL, 0x0f23), board_ahci_mobile }, /* Bay Trail AHCI */
385 	{ PCI_VDEVICE(INTEL, 0x22a3), board_ahci_mobile }, /* Cherry Tr. AHCI */
386 	{ PCI_VDEVICE(INTEL, 0x5ae3), board_ahci_mobile }, /* ApolloLake AHCI */
387 	{ PCI_VDEVICE(INTEL, 0x34d3), board_ahci_mobile }, /* Ice Lake LP AHCI */
388 
389 	/* JMicron 360/1/3/5/6, match class to avoid IDE function */
390 	{ PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
391 	  PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci_ign_iferr },
392 	/* JMicron 362B and 362C have an AHCI function with IDE class code */
393 	{ PCI_VDEVICE(JMICRON, 0x2362), board_ahci_ign_iferr },
394 	{ PCI_VDEVICE(JMICRON, 0x236f), board_ahci_ign_iferr },
395 	/* May need to update quirk_jmicron_async_suspend() for additions */
396 
397 	/* ATI */
398 	{ PCI_VDEVICE(ATI, 0x4380), board_ahci_sb600 }, /* ATI SB600 */
399 	{ PCI_VDEVICE(ATI, 0x4390), board_ahci_sb700 }, /* ATI SB700/800 */
400 	{ PCI_VDEVICE(ATI, 0x4391), board_ahci_sb700 }, /* ATI SB700/800 */
401 	{ PCI_VDEVICE(ATI, 0x4392), board_ahci_sb700 }, /* ATI SB700/800 */
402 	{ PCI_VDEVICE(ATI, 0x4393), board_ahci_sb700 }, /* ATI SB700/800 */
403 	{ PCI_VDEVICE(ATI, 0x4394), board_ahci_sb700 }, /* ATI SB700/800 */
404 	{ PCI_VDEVICE(ATI, 0x4395), board_ahci_sb700 }, /* ATI SB700/800 */
405 
406 	/* AMD */
407 	{ PCI_VDEVICE(AMD, 0x7800), board_ahci }, /* AMD Hudson-2 */
408 	{ PCI_VDEVICE(AMD, 0x7900), board_ahci }, /* AMD CZ */
409 	/* AMD is using RAID class only for ahci controllers */
410 	{ PCI_VENDOR_ID_AMD, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
411 	  PCI_CLASS_STORAGE_RAID << 8, 0xffffff, board_ahci },
412 
413 	/* VIA */
414 	{ PCI_VDEVICE(VIA, 0x3349), board_ahci_vt8251 }, /* VIA VT8251 */
415 	{ PCI_VDEVICE(VIA, 0x6287), board_ahci_vt8251 }, /* VIA VT8251 */
416 
417 	/* NVIDIA */
418 	{ PCI_VDEVICE(NVIDIA, 0x044c), board_ahci_mcp65 },	/* MCP65 */
419 	{ PCI_VDEVICE(NVIDIA, 0x044d), board_ahci_mcp65 },	/* MCP65 */
420 	{ PCI_VDEVICE(NVIDIA, 0x044e), board_ahci_mcp65 },	/* MCP65 */
421 	{ PCI_VDEVICE(NVIDIA, 0x044f), board_ahci_mcp65 },	/* MCP65 */
422 	{ PCI_VDEVICE(NVIDIA, 0x045c), board_ahci_mcp65 },	/* MCP65 */
423 	{ PCI_VDEVICE(NVIDIA, 0x045d), board_ahci_mcp65 },	/* MCP65 */
424 	{ PCI_VDEVICE(NVIDIA, 0x045e), board_ahci_mcp65 },	/* MCP65 */
425 	{ PCI_VDEVICE(NVIDIA, 0x045f), board_ahci_mcp65 },	/* MCP65 */
426 	{ PCI_VDEVICE(NVIDIA, 0x0550), board_ahci_mcp67 },	/* MCP67 */
427 	{ PCI_VDEVICE(NVIDIA, 0x0551), board_ahci_mcp67 },	/* MCP67 */
428 	{ PCI_VDEVICE(NVIDIA, 0x0552), board_ahci_mcp67 },	/* MCP67 */
429 	{ PCI_VDEVICE(NVIDIA, 0x0553), board_ahci_mcp67 },	/* MCP67 */
430 	{ PCI_VDEVICE(NVIDIA, 0x0554), board_ahci_mcp67 },	/* MCP67 */
431 	{ PCI_VDEVICE(NVIDIA, 0x0555), board_ahci_mcp67 },	/* MCP67 */
432 	{ PCI_VDEVICE(NVIDIA, 0x0556), board_ahci_mcp67 },	/* MCP67 */
433 	{ PCI_VDEVICE(NVIDIA, 0x0557), board_ahci_mcp67 },	/* MCP67 */
434 	{ PCI_VDEVICE(NVIDIA, 0x0558), board_ahci_mcp67 },	/* MCP67 */
435 	{ PCI_VDEVICE(NVIDIA, 0x0559), board_ahci_mcp67 },	/* MCP67 */
436 	{ PCI_VDEVICE(NVIDIA, 0x055a), board_ahci_mcp67 },	/* MCP67 */
437 	{ PCI_VDEVICE(NVIDIA, 0x055b), board_ahci_mcp67 },	/* MCP67 */
438 	{ PCI_VDEVICE(NVIDIA, 0x0580), board_ahci_mcp_linux },	/* Linux ID */
439 	{ PCI_VDEVICE(NVIDIA, 0x0581), board_ahci_mcp_linux },	/* Linux ID */
440 	{ PCI_VDEVICE(NVIDIA, 0x0582), board_ahci_mcp_linux },	/* Linux ID */
441 	{ PCI_VDEVICE(NVIDIA, 0x0583), board_ahci_mcp_linux },	/* Linux ID */
442 	{ PCI_VDEVICE(NVIDIA, 0x0584), board_ahci_mcp_linux },	/* Linux ID */
443 	{ PCI_VDEVICE(NVIDIA, 0x0585), board_ahci_mcp_linux },	/* Linux ID */
444 	{ PCI_VDEVICE(NVIDIA, 0x0586), board_ahci_mcp_linux },	/* Linux ID */
445 	{ PCI_VDEVICE(NVIDIA, 0x0587), board_ahci_mcp_linux },	/* Linux ID */
446 	{ PCI_VDEVICE(NVIDIA, 0x0588), board_ahci_mcp_linux },	/* Linux ID */
447 	{ PCI_VDEVICE(NVIDIA, 0x0589), board_ahci_mcp_linux },	/* Linux ID */
448 	{ PCI_VDEVICE(NVIDIA, 0x058a), board_ahci_mcp_linux },	/* Linux ID */
449 	{ PCI_VDEVICE(NVIDIA, 0x058b), board_ahci_mcp_linux },	/* Linux ID */
450 	{ PCI_VDEVICE(NVIDIA, 0x058c), board_ahci_mcp_linux },	/* Linux ID */
451 	{ PCI_VDEVICE(NVIDIA, 0x058d), board_ahci_mcp_linux },	/* Linux ID */
452 	{ PCI_VDEVICE(NVIDIA, 0x058e), board_ahci_mcp_linux },	/* Linux ID */
453 	{ PCI_VDEVICE(NVIDIA, 0x058f), board_ahci_mcp_linux },	/* Linux ID */
454 	{ PCI_VDEVICE(NVIDIA, 0x07f0), board_ahci_mcp73 },	/* MCP73 */
455 	{ PCI_VDEVICE(NVIDIA, 0x07f1), board_ahci_mcp73 },	/* MCP73 */
456 	{ PCI_VDEVICE(NVIDIA, 0x07f2), board_ahci_mcp73 },	/* MCP73 */
457 	{ PCI_VDEVICE(NVIDIA, 0x07f3), board_ahci_mcp73 },	/* MCP73 */
458 	{ PCI_VDEVICE(NVIDIA, 0x07f4), board_ahci_mcp73 },	/* MCP73 */
459 	{ PCI_VDEVICE(NVIDIA, 0x07f5), board_ahci_mcp73 },	/* MCP73 */
460 	{ PCI_VDEVICE(NVIDIA, 0x07f6), board_ahci_mcp73 },	/* MCP73 */
461 	{ PCI_VDEVICE(NVIDIA, 0x07f7), board_ahci_mcp73 },	/* MCP73 */
462 	{ PCI_VDEVICE(NVIDIA, 0x07f8), board_ahci_mcp73 },	/* MCP73 */
463 	{ PCI_VDEVICE(NVIDIA, 0x07f9), board_ahci_mcp73 },	/* MCP73 */
464 	{ PCI_VDEVICE(NVIDIA, 0x07fa), board_ahci_mcp73 },	/* MCP73 */
465 	{ PCI_VDEVICE(NVIDIA, 0x07fb), board_ahci_mcp73 },	/* MCP73 */
466 	{ PCI_VDEVICE(NVIDIA, 0x0ad0), board_ahci_mcp77 },	/* MCP77 */
467 	{ PCI_VDEVICE(NVIDIA, 0x0ad1), board_ahci_mcp77 },	/* MCP77 */
468 	{ PCI_VDEVICE(NVIDIA, 0x0ad2), board_ahci_mcp77 },	/* MCP77 */
469 	{ PCI_VDEVICE(NVIDIA, 0x0ad3), board_ahci_mcp77 },	/* MCP77 */
470 	{ PCI_VDEVICE(NVIDIA, 0x0ad4), board_ahci_mcp77 },	/* MCP77 */
471 	{ PCI_VDEVICE(NVIDIA, 0x0ad5), board_ahci_mcp77 },	/* MCP77 */
472 	{ PCI_VDEVICE(NVIDIA, 0x0ad6), board_ahci_mcp77 },	/* MCP77 */
473 	{ PCI_VDEVICE(NVIDIA, 0x0ad7), board_ahci_mcp77 },	/* MCP77 */
474 	{ PCI_VDEVICE(NVIDIA, 0x0ad8), board_ahci_mcp77 },	/* MCP77 */
475 	{ PCI_VDEVICE(NVIDIA, 0x0ad9), board_ahci_mcp77 },	/* MCP77 */
476 	{ PCI_VDEVICE(NVIDIA, 0x0ada), board_ahci_mcp77 },	/* MCP77 */
477 	{ PCI_VDEVICE(NVIDIA, 0x0adb), board_ahci_mcp77 },	/* MCP77 */
478 	{ PCI_VDEVICE(NVIDIA, 0x0ab4), board_ahci_mcp79 },	/* MCP79 */
479 	{ PCI_VDEVICE(NVIDIA, 0x0ab5), board_ahci_mcp79 },	/* MCP79 */
480 	{ PCI_VDEVICE(NVIDIA, 0x0ab6), board_ahci_mcp79 },	/* MCP79 */
481 	{ PCI_VDEVICE(NVIDIA, 0x0ab7), board_ahci_mcp79 },	/* MCP79 */
482 	{ PCI_VDEVICE(NVIDIA, 0x0ab8), board_ahci_mcp79 },	/* MCP79 */
483 	{ PCI_VDEVICE(NVIDIA, 0x0ab9), board_ahci_mcp79 },	/* MCP79 */
484 	{ PCI_VDEVICE(NVIDIA, 0x0aba), board_ahci_mcp79 },	/* MCP79 */
485 	{ PCI_VDEVICE(NVIDIA, 0x0abb), board_ahci_mcp79 },	/* MCP79 */
486 	{ PCI_VDEVICE(NVIDIA, 0x0abc), board_ahci_mcp79 },	/* MCP79 */
487 	{ PCI_VDEVICE(NVIDIA, 0x0abd), board_ahci_mcp79 },	/* MCP79 */
488 	{ PCI_VDEVICE(NVIDIA, 0x0abe), board_ahci_mcp79 },	/* MCP79 */
489 	{ PCI_VDEVICE(NVIDIA, 0x0abf), board_ahci_mcp79 },	/* MCP79 */
490 	{ PCI_VDEVICE(NVIDIA, 0x0d84), board_ahci_mcp89 },	/* MCP89 */
491 	{ PCI_VDEVICE(NVIDIA, 0x0d85), board_ahci_mcp89 },	/* MCP89 */
492 	{ PCI_VDEVICE(NVIDIA, 0x0d86), board_ahci_mcp89 },	/* MCP89 */
493 	{ PCI_VDEVICE(NVIDIA, 0x0d87), board_ahci_mcp89 },	/* MCP89 */
494 	{ PCI_VDEVICE(NVIDIA, 0x0d88), board_ahci_mcp89 },	/* MCP89 */
495 	{ PCI_VDEVICE(NVIDIA, 0x0d89), board_ahci_mcp89 },	/* MCP89 */
496 	{ PCI_VDEVICE(NVIDIA, 0x0d8a), board_ahci_mcp89 },	/* MCP89 */
497 	{ PCI_VDEVICE(NVIDIA, 0x0d8b), board_ahci_mcp89 },	/* MCP89 */
498 	{ PCI_VDEVICE(NVIDIA, 0x0d8c), board_ahci_mcp89 },	/* MCP89 */
499 	{ PCI_VDEVICE(NVIDIA, 0x0d8d), board_ahci_mcp89 },	/* MCP89 */
500 	{ PCI_VDEVICE(NVIDIA, 0x0d8e), board_ahci_mcp89 },	/* MCP89 */
501 	{ PCI_VDEVICE(NVIDIA, 0x0d8f), board_ahci_mcp89 },	/* MCP89 */
502 
503 	/* SiS */
504 	{ PCI_VDEVICE(SI, 0x1184), board_ahci },		/* SiS 966 */
505 	{ PCI_VDEVICE(SI, 0x1185), board_ahci },		/* SiS 968 */
506 	{ PCI_VDEVICE(SI, 0x0186), board_ahci },		/* SiS 968 */
507 
508 	/* ST Microelectronics */
509 	{ PCI_VDEVICE(STMICRO, 0xCC06), board_ahci },		/* ST ConneXt */
510 
511 	/* Marvell */
512 	{ PCI_VDEVICE(MARVELL, 0x6145), board_ahci_mv },	/* 6145 */
513 	{ PCI_VDEVICE(MARVELL, 0x6121), board_ahci_mv },	/* 6121 */
514 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9123),
515 	  .class = PCI_CLASS_STORAGE_SATA_AHCI,
516 	  .class_mask = 0xffffff,
517 	  .driver_data = board_ahci_yes_fbs },			/* 88se9128 */
518 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9125),
519 	  .driver_data = board_ahci_yes_fbs },			/* 88se9125 */
520 	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_MARVELL_EXT, 0x9178,
521 			 PCI_VENDOR_ID_MARVELL_EXT, 0x9170),
522 	  .driver_data = board_ahci_yes_fbs },			/* 88se9170 */
523 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x917a),
524 	  .driver_data = board_ahci_yes_fbs },			/* 88se9172 */
525 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9172),
526 	  .driver_data = board_ahci_yes_fbs },			/* 88se9182 */
527 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9182),
528 	  .driver_data = board_ahci_yes_fbs },			/* 88se9172 */
529 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9192),
530 	  .driver_data = board_ahci_yes_fbs },			/* 88se9172 on some Gigabyte */
531 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x91a0),
532 	  .driver_data = board_ahci_yes_fbs },
533 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x91a2), 	/* 88se91a2 */
534 	  .driver_data = board_ahci_yes_fbs },
535 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x91a3),
536 	  .driver_data = board_ahci_yes_fbs },
537 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9230),
538 	  .driver_data = board_ahci_yes_fbs },
539 	{ PCI_DEVICE(PCI_VENDOR_ID_TTI, 0x0642), /* highpoint rocketraid 642L */
540 	  .driver_data = board_ahci_yes_fbs },
541 	{ PCI_DEVICE(PCI_VENDOR_ID_TTI, 0x0645), /* highpoint rocketraid 644L */
542 	  .driver_data = board_ahci_yes_fbs },
543 
544 	/* Promise */
545 	{ PCI_VDEVICE(PROMISE, 0x3f20), board_ahci },	/* PDC42819 */
546 	{ PCI_VDEVICE(PROMISE, 0x3781), board_ahci },   /* FastTrak TX8660 ahci-mode */
547 
548 	/* Asmedia */
549 	{ PCI_VDEVICE(ASMEDIA, 0x0601), board_ahci },	/* ASM1060 */
550 	{ PCI_VDEVICE(ASMEDIA, 0x0602), board_ahci },	/* ASM1060 */
551 	{ PCI_VDEVICE(ASMEDIA, 0x0611), board_ahci },	/* ASM1061 */
552 	{ PCI_VDEVICE(ASMEDIA, 0x0612), board_ahci },	/* ASM1062 */
553 	{ PCI_VDEVICE(ASMEDIA, 0x0621), board_ahci },   /* ASM1061R */
554 	{ PCI_VDEVICE(ASMEDIA, 0x0622), board_ahci },   /* ASM1062R */
555 
556 	/*
557 	 * Samsung SSDs found on some macbooks.  NCQ times out if MSI is
558 	 * enabled.  https://bugzilla.kernel.org/show_bug.cgi?id=60731
559 	 */
560 	{ PCI_VDEVICE(SAMSUNG, 0x1600), board_ahci_nomsi },
561 	{ PCI_VDEVICE(SAMSUNG, 0xa800), board_ahci_nomsi },
562 
563 	/* Enmotus */
564 	{ PCI_DEVICE(0x1c44, 0x8000), board_ahci },
565 
566 	/* Generic, PCI class code for AHCI */
567 	{ PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
568 	  PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci },
569 
570 	{ }	/* terminate list */
571 };
572 
573 static const struct dev_pm_ops ahci_pci_pm_ops = {
574 	SET_SYSTEM_SLEEP_PM_OPS(ahci_pci_device_suspend, ahci_pci_device_resume)
575 	SET_RUNTIME_PM_OPS(ahci_pci_device_runtime_suspend,
576 			   ahci_pci_device_runtime_resume, NULL)
577 };
578 
579 static struct pci_driver ahci_pci_driver = {
580 	.name			= DRV_NAME,
581 	.id_table		= ahci_pci_tbl,
582 	.probe			= ahci_init_one,
583 	.remove			= ahci_remove_one,
584 	.driver = {
585 		.pm		= &ahci_pci_pm_ops,
586 	},
587 };
588 
589 #if IS_ENABLED(CONFIG_PATA_MARVELL)
590 static int marvell_enable;
591 #else
592 static int marvell_enable = 1;
593 #endif
594 module_param(marvell_enable, int, 0644);
595 MODULE_PARM_DESC(marvell_enable, "Marvell SATA via AHCI (1 = enabled)");
596 
597 static int mobile_lpm_policy = -1;
598 module_param(mobile_lpm_policy, int, 0644);
599 MODULE_PARM_DESC(mobile_lpm_policy, "Default LPM policy for mobile chipsets");
600 
601 static void ahci_pci_save_initial_config(struct pci_dev *pdev,
602 					 struct ahci_host_priv *hpriv)
603 {
604 	if (pdev->vendor == PCI_VENDOR_ID_JMICRON && pdev->device == 0x2361) {
605 		dev_info(&pdev->dev, "JMB361 has only one port\n");
606 		hpriv->force_port_map = 1;
607 	}
608 
609 	/*
610 	 * Temporary Marvell 6145 hack: PATA port presence
611 	 * is asserted through the standard AHCI port
612 	 * presence register, as bit 4 (counting from 0)
613 	 */
614 	if (hpriv->flags & AHCI_HFLAG_MV_PATA) {
615 		if (pdev->device == 0x6121)
616 			hpriv->mask_port_map = 0x3;
617 		else
618 			hpriv->mask_port_map = 0xf;
619 		dev_info(&pdev->dev,
620 			  "Disabling your PATA port. Use the boot option 'ahci.marvell_enable=0' to avoid this.\n");
621 	}
622 
623 	ahci_save_initial_config(&pdev->dev, hpriv);
624 }
625 
626 static int ahci_pci_reset_controller(struct ata_host *host)
627 {
628 	struct pci_dev *pdev = to_pci_dev(host->dev);
629 	int rc;
630 
631 	rc = ahci_reset_controller(host);
632 	if (rc)
633 		return rc;
634 
635 	if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
636 		struct ahci_host_priv *hpriv = host->private_data;
637 		u16 tmp16;
638 
639 		/* configure PCS */
640 		pci_read_config_word(pdev, 0x92, &tmp16);
641 		if ((tmp16 & hpriv->port_map) != hpriv->port_map) {
642 			tmp16 |= hpriv->port_map;
643 			pci_write_config_word(pdev, 0x92, tmp16);
644 		}
645 	}
646 
647 	return 0;
648 }
649 
650 static void ahci_pci_init_controller(struct ata_host *host)
651 {
652 	struct ahci_host_priv *hpriv = host->private_data;
653 	struct pci_dev *pdev = to_pci_dev(host->dev);
654 	void __iomem *port_mmio;
655 	u32 tmp;
656 	int mv;
657 
658 	if (hpriv->flags & AHCI_HFLAG_MV_PATA) {
659 		if (pdev->device == 0x6121)
660 			mv = 2;
661 		else
662 			mv = 4;
663 		port_mmio = __ahci_port_base(host, mv);
664 
665 		writel(0, port_mmio + PORT_IRQ_MASK);
666 
667 		/* clear port IRQ */
668 		tmp = readl(port_mmio + PORT_IRQ_STAT);
669 		VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp);
670 		if (tmp)
671 			writel(tmp, port_mmio + PORT_IRQ_STAT);
672 	}
673 
674 	ahci_init_controller(host);
675 }
676 
677 static int ahci_vt8251_hardreset(struct ata_link *link, unsigned int *class,
678 				 unsigned long deadline)
679 {
680 	struct ata_port *ap = link->ap;
681 	struct ahci_host_priv *hpriv = ap->host->private_data;
682 	bool online;
683 	int rc;
684 
685 	DPRINTK("ENTER\n");
686 
687 	hpriv->stop_engine(ap);
688 
689 	rc = sata_link_hardreset(link, sata_ehc_deb_timing(&link->eh_context),
690 				 deadline, &online, NULL);
691 
692 	hpriv->start_engine(ap);
693 
694 	DPRINTK("EXIT, rc=%d, class=%u\n", rc, *class);
695 
696 	/* vt8251 doesn't clear BSY on signature FIS reception,
697 	 * request follow-up softreset.
698 	 */
699 	return online ? -EAGAIN : rc;
700 }
701 
702 static int ahci_p5wdh_hardreset(struct ata_link *link, unsigned int *class,
703 				unsigned long deadline)
704 {
705 	struct ata_port *ap = link->ap;
706 	struct ahci_port_priv *pp = ap->private_data;
707 	struct ahci_host_priv *hpriv = ap->host->private_data;
708 	u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
709 	struct ata_taskfile tf;
710 	bool online;
711 	int rc;
712 
713 	hpriv->stop_engine(ap);
714 
715 	/* clear D2H reception area to properly wait for D2H FIS */
716 	ata_tf_init(link->device, &tf);
717 	tf.command = ATA_BUSY;
718 	ata_tf_to_fis(&tf, 0, 0, d2h_fis);
719 
720 	rc = sata_link_hardreset(link, sata_ehc_deb_timing(&link->eh_context),
721 				 deadline, &online, NULL);
722 
723 	hpriv->start_engine(ap);
724 
725 	/* The pseudo configuration device on SIMG4726 attached to
726 	 * ASUS P5W-DH Deluxe doesn't send signature FIS after
727 	 * hardreset if no device is attached to the first downstream
728 	 * port && the pseudo device locks up on SRST w/ PMP==0.  To
729 	 * work around this, wait for !BSY only briefly.  If BSY isn't
730 	 * cleared, perform CLO and proceed to IDENTIFY (achieved by
731 	 * ATA_LFLAG_NO_SRST and ATA_LFLAG_ASSUME_ATA).
732 	 *
733 	 * Wait for two seconds.  Devices attached to downstream port
734 	 * which can't process the following IDENTIFY after this will
735 	 * have to be reset again.  For most cases, this should
736 	 * suffice while making probing snappish enough.
737 	 */
738 	if (online) {
739 		rc = ata_wait_after_reset(link, jiffies + 2 * HZ,
740 					  ahci_check_ready);
741 		if (rc)
742 			ahci_kick_engine(ap);
743 	}
744 	return rc;
745 }
746 
747 /*
748  * ahci_avn_hardreset - attempt more aggressive recovery of Avoton ports.
749  *
750  * It has been observed with some SSDs that the timing of events in the
751  * link synchronization phase can leave the port in a state that can not
752  * be recovered by a SATA-hard-reset alone.  The failing signature is
753  * SStatus.DET stuck at 1 ("Device presence detected but Phy
754  * communication not established").  It was found that unloading and
755  * reloading the driver when this problem occurs allows the drive
756  * connection to be recovered (DET advanced to 0x3).  The critical
757  * component of reloading the driver is that the port state machines are
758  * reset by bouncing "port enable" in the AHCI PCS configuration
759  * register.  So, reproduce that effect by bouncing a port whenever we
760  * see DET==1 after a reset.
761  */
762 static int ahci_avn_hardreset(struct ata_link *link, unsigned int *class,
763 			      unsigned long deadline)
764 {
765 	const unsigned long *timing = sata_ehc_deb_timing(&link->eh_context);
766 	struct ata_port *ap = link->ap;
767 	struct ahci_port_priv *pp = ap->private_data;
768 	struct ahci_host_priv *hpriv = ap->host->private_data;
769 	u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
770 	unsigned long tmo = deadline - jiffies;
771 	struct ata_taskfile tf;
772 	bool online;
773 	int rc, i;
774 
775 	DPRINTK("ENTER\n");
776 
777 	hpriv->stop_engine(ap);
778 
779 	for (i = 0; i < 2; i++) {
780 		u16 val;
781 		u32 sstatus;
782 		int port = ap->port_no;
783 		struct ata_host *host = ap->host;
784 		struct pci_dev *pdev = to_pci_dev(host->dev);
785 
786 		/* clear D2H reception area to properly wait for D2H FIS */
787 		ata_tf_init(link->device, &tf);
788 		tf.command = ATA_BUSY;
789 		ata_tf_to_fis(&tf, 0, 0, d2h_fis);
790 
791 		rc = sata_link_hardreset(link, timing, deadline, &online,
792 				ahci_check_ready);
793 
794 		if (sata_scr_read(link, SCR_STATUS, &sstatus) != 0 ||
795 				(sstatus & 0xf) != 1)
796 			break;
797 
798 		ata_link_printk(link, KERN_INFO, "avn bounce port%d\n",
799 				port);
800 
801 		pci_read_config_word(pdev, 0x92, &val);
802 		val &= ~(1 << port);
803 		pci_write_config_word(pdev, 0x92, val);
804 		ata_msleep(ap, 1000);
805 		val |= 1 << port;
806 		pci_write_config_word(pdev, 0x92, val);
807 		deadline += tmo;
808 	}
809 
810 	hpriv->start_engine(ap);
811 
812 	if (online)
813 		*class = ahci_dev_classify(ap);
814 
815 	DPRINTK("EXIT, rc=%d, class=%u\n", rc, *class);
816 	return rc;
817 }
818 
819 
820 #ifdef CONFIG_PM
821 static void ahci_pci_disable_interrupts(struct ata_host *host)
822 {
823 	struct ahci_host_priv *hpriv = host->private_data;
824 	void __iomem *mmio = hpriv->mmio;
825 	u32 ctl;
826 
827 	/* AHCI spec rev1.1 section 8.3.3:
828 	 * Software must disable interrupts prior to requesting a
829 	 * transition of the HBA to D3 state.
830 	 */
831 	ctl = readl(mmio + HOST_CTL);
832 	ctl &= ~HOST_IRQ_EN;
833 	writel(ctl, mmio + HOST_CTL);
834 	readl(mmio + HOST_CTL); /* flush */
835 }
836 
837 static int ahci_pci_device_runtime_suspend(struct device *dev)
838 {
839 	struct pci_dev *pdev = to_pci_dev(dev);
840 	struct ata_host *host = pci_get_drvdata(pdev);
841 
842 	ahci_pci_disable_interrupts(host);
843 	return 0;
844 }
845 
846 static int ahci_pci_device_runtime_resume(struct device *dev)
847 {
848 	struct pci_dev *pdev = to_pci_dev(dev);
849 	struct ata_host *host = pci_get_drvdata(pdev);
850 	int rc;
851 
852 	rc = ahci_pci_reset_controller(host);
853 	if (rc)
854 		return rc;
855 	ahci_pci_init_controller(host);
856 	return 0;
857 }
858 
859 #ifdef CONFIG_PM_SLEEP
860 static int ahci_pci_device_suspend(struct device *dev)
861 {
862 	struct pci_dev *pdev = to_pci_dev(dev);
863 	struct ata_host *host = pci_get_drvdata(pdev);
864 	struct ahci_host_priv *hpriv = host->private_data;
865 
866 	if (hpriv->flags & AHCI_HFLAG_NO_SUSPEND) {
867 		dev_err(&pdev->dev,
868 			"BIOS update required for suspend/resume\n");
869 		return -EIO;
870 	}
871 
872 	ahci_pci_disable_interrupts(host);
873 	return ata_host_suspend(host, PMSG_SUSPEND);
874 }
875 
876 static int ahci_pci_device_resume(struct device *dev)
877 {
878 	struct pci_dev *pdev = to_pci_dev(dev);
879 	struct ata_host *host = pci_get_drvdata(pdev);
880 	int rc;
881 
882 	/* Apple BIOS helpfully mangles the registers on resume */
883 	if (is_mcp89_apple(pdev))
884 		ahci_mcp89_apple_enable(pdev);
885 
886 	if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
887 		rc = ahci_pci_reset_controller(host);
888 		if (rc)
889 			return rc;
890 
891 		ahci_pci_init_controller(host);
892 	}
893 
894 	ata_host_resume(host);
895 
896 	return 0;
897 }
898 #endif
899 
900 #endif /* CONFIG_PM */
901 
902 static int ahci_configure_dma_masks(struct pci_dev *pdev, int using_dac)
903 {
904 	int rc;
905 
906 	/*
907 	 * If the device fixup already set the dma_mask to some non-standard
908 	 * value, don't extend it here. This happens on STA2X11, for example.
909 	 */
910 	if (pdev->dma_mask && pdev->dma_mask < DMA_BIT_MASK(32))
911 		return 0;
912 
913 	if (using_dac &&
914 	    !dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) {
915 		rc = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
916 		if (rc) {
917 			rc = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
918 			if (rc) {
919 				dev_err(&pdev->dev,
920 					"64-bit DMA enable failed\n");
921 				return rc;
922 			}
923 		}
924 	} else {
925 		rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
926 		if (rc) {
927 			dev_err(&pdev->dev, "32-bit DMA enable failed\n");
928 			return rc;
929 		}
930 		rc = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
931 		if (rc) {
932 			dev_err(&pdev->dev,
933 				"32-bit consistent DMA enable failed\n");
934 			return rc;
935 		}
936 	}
937 	return 0;
938 }
939 
940 static void ahci_pci_print_info(struct ata_host *host)
941 {
942 	struct pci_dev *pdev = to_pci_dev(host->dev);
943 	u16 cc;
944 	const char *scc_s;
945 
946 	pci_read_config_word(pdev, 0x0a, &cc);
947 	if (cc == PCI_CLASS_STORAGE_IDE)
948 		scc_s = "IDE";
949 	else if (cc == PCI_CLASS_STORAGE_SATA)
950 		scc_s = "SATA";
951 	else if (cc == PCI_CLASS_STORAGE_RAID)
952 		scc_s = "RAID";
953 	else
954 		scc_s = "unknown";
955 
956 	ahci_print_info(host, scc_s);
957 }
958 
959 /* On ASUS P5W DH Deluxe, the second port of PCI device 00:1f.2 is
960  * hardwired to on-board SIMG 4726.  The chipset is ICH8 and doesn't
961  * support PMP and the 4726 either directly exports the device
962  * attached to the first downstream port or acts as a hardware storage
963  * controller and emulate a single ATA device (can be RAID 0/1 or some
964  * other configuration).
965  *
966  * When there's no device attached to the first downstream port of the
967  * 4726, "Config Disk" appears, which is a pseudo ATA device to
968  * configure the 4726.  However, ATA emulation of the device is very
969  * lame.  It doesn't send signature D2H Reg FIS after the initial
970  * hardreset, pukes on SRST w/ PMP==0 and has bunch of other issues.
971  *
972  * The following function works around the problem by always using
973  * hardreset on the port and not depending on receiving signature FIS
974  * afterward.  If signature FIS isn't received soon, ATA class is
975  * assumed without follow-up softreset.
976  */
977 static void ahci_p5wdh_workaround(struct ata_host *host)
978 {
979 	static const struct dmi_system_id sysids[] = {
980 		{
981 			.ident = "P5W DH Deluxe",
982 			.matches = {
983 				DMI_MATCH(DMI_SYS_VENDOR,
984 					  "ASUSTEK COMPUTER INC"),
985 				DMI_MATCH(DMI_PRODUCT_NAME, "P5W DH Deluxe"),
986 			},
987 		},
988 		{ }
989 	};
990 	struct pci_dev *pdev = to_pci_dev(host->dev);
991 
992 	if (pdev->bus->number == 0 && pdev->devfn == PCI_DEVFN(0x1f, 2) &&
993 	    dmi_check_system(sysids)) {
994 		struct ata_port *ap = host->ports[1];
995 
996 		dev_info(&pdev->dev,
997 			 "enabling ASUS P5W DH Deluxe on-board SIMG4726 workaround\n");
998 
999 		ap->ops = &ahci_p5wdh_ops;
1000 		ap->link.flags |= ATA_LFLAG_NO_SRST | ATA_LFLAG_ASSUME_ATA;
1001 	}
1002 }
1003 
1004 /*
1005  * Macbook7,1 firmware forcibly disables MCP89 AHCI and changes PCI ID when
1006  * booting in BIOS compatibility mode.  We restore the registers but not ID.
1007  */
1008 static void ahci_mcp89_apple_enable(struct pci_dev *pdev)
1009 {
1010 	u32 val;
1011 
1012 	printk(KERN_INFO "ahci: enabling MCP89 AHCI mode\n");
1013 
1014 	pci_read_config_dword(pdev, 0xf8, &val);
1015 	val |= 1 << 0x1b;
1016 	/* the following changes the device ID, but appears not to affect function */
1017 	/* val = (val & ~0xf0000000) | 0x80000000; */
1018 	pci_write_config_dword(pdev, 0xf8, val);
1019 
1020 	pci_read_config_dword(pdev, 0x54c, &val);
1021 	val |= 1 << 0xc;
1022 	pci_write_config_dword(pdev, 0x54c, val);
1023 
1024 	pci_read_config_dword(pdev, 0x4a4, &val);
1025 	val &= 0xff;
1026 	val |= 0x01060100;
1027 	pci_write_config_dword(pdev, 0x4a4, val);
1028 
1029 	pci_read_config_dword(pdev, 0x54c, &val);
1030 	val &= ~(1 << 0xc);
1031 	pci_write_config_dword(pdev, 0x54c, val);
1032 
1033 	pci_read_config_dword(pdev, 0xf8, &val);
1034 	val &= ~(1 << 0x1b);
1035 	pci_write_config_dword(pdev, 0xf8, val);
1036 }
1037 
1038 static bool is_mcp89_apple(struct pci_dev *pdev)
1039 {
1040 	return pdev->vendor == PCI_VENDOR_ID_NVIDIA &&
1041 		pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP89_SATA &&
1042 		pdev->subsystem_vendor == PCI_VENDOR_ID_APPLE &&
1043 		pdev->subsystem_device == 0xcb89;
1044 }
1045 
1046 /* only some SB600 ahci controllers can do 64bit DMA */
1047 static bool ahci_sb600_enable_64bit(struct pci_dev *pdev)
1048 {
1049 	static const struct dmi_system_id sysids[] = {
1050 		/*
1051 		 * The oldest version known to be broken is 0901 and
1052 		 * working is 1501 which was released on 2007-10-26.
1053 		 * Enable 64bit DMA on 1501 and anything newer.
1054 		 *
1055 		 * Please read bko#9412 for more info.
1056 		 */
1057 		{
1058 			.ident = "ASUS M2A-VM",
1059 			.matches = {
1060 				DMI_MATCH(DMI_BOARD_VENDOR,
1061 					  "ASUSTeK Computer INC."),
1062 				DMI_MATCH(DMI_BOARD_NAME, "M2A-VM"),
1063 			},
1064 			.driver_data = "20071026",	/* yyyymmdd */
1065 		},
1066 		/*
1067 		 * All BIOS versions for the MSI K9A2 Platinum (MS-7376)
1068 		 * support 64bit DMA.
1069 		 *
1070 		 * BIOS versions earlier than 1.5 had the Manufacturer DMI
1071 		 * fields as "MICRO-STAR INTERANTIONAL CO.,LTD".
1072 		 * This spelling mistake was fixed in BIOS version 1.5, so
1073 		 * 1.5 and later have the Manufacturer as
1074 		 * "MICRO-STAR INTERNATIONAL CO.,LTD".
1075 		 * So try to match on DMI_BOARD_VENDOR of "MICRO-STAR INTER".
1076 		 *
1077 		 * BIOS versions earlier than 1.9 had a Board Product Name
1078 		 * DMI field of "MS-7376". This was changed to be
1079 		 * "K9A2 Platinum (MS-7376)" in version 1.9, but we can still
1080 		 * match on DMI_BOARD_NAME of "MS-7376".
1081 		 */
1082 		{
1083 			.ident = "MSI K9A2 Platinum",
1084 			.matches = {
1085 				DMI_MATCH(DMI_BOARD_VENDOR,
1086 					  "MICRO-STAR INTER"),
1087 				DMI_MATCH(DMI_BOARD_NAME, "MS-7376"),
1088 			},
1089 		},
1090 		/*
1091 		 * All BIOS versions for the MSI K9AGM2 (MS-7327) support
1092 		 * 64bit DMA.
1093 		 *
1094 		 * This board also had the typo mentioned above in the
1095 		 * Manufacturer DMI field (fixed in BIOS version 1.5), so
1096 		 * match on DMI_BOARD_VENDOR of "MICRO-STAR INTER" again.
1097 		 */
1098 		{
1099 			.ident = "MSI K9AGM2",
1100 			.matches = {
1101 				DMI_MATCH(DMI_BOARD_VENDOR,
1102 					  "MICRO-STAR INTER"),
1103 				DMI_MATCH(DMI_BOARD_NAME, "MS-7327"),
1104 			},
1105 		},
1106 		/*
1107 		 * All BIOS versions for the Asus M3A support 64bit DMA.
1108 		 * (all release versions from 0301 to 1206 were tested)
1109 		 */
1110 		{
1111 			.ident = "ASUS M3A",
1112 			.matches = {
1113 				DMI_MATCH(DMI_BOARD_VENDOR,
1114 					  "ASUSTeK Computer INC."),
1115 				DMI_MATCH(DMI_BOARD_NAME, "M3A"),
1116 			},
1117 		},
1118 		{ }
1119 	};
1120 	const struct dmi_system_id *match;
1121 	int year, month, date;
1122 	char buf[9];
1123 
1124 	match = dmi_first_match(sysids);
1125 	if (pdev->bus->number != 0 || pdev->devfn != PCI_DEVFN(0x12, 0) ||
1126 	    !match)
1127 		return false;
1128 
1129 	if (!match->driver_data)
1130 		goto enable_64bit;
1131 
1132 	dmi_get_date(DMI_BIOS_DATE, &year, &month, &date);
1133 	snprintf(buf, sizeof(buf), "%04d%02d%02d", year, month, date);
1134 
1135 	if (strcmp(buf, match->driver_data) >= 0)
1136 		goto enable_64bit;
1137 	else {
1138 		dev_warn(&pdev->dev,
1139 			 "%s: BIOS too old, forcing 32bit DMA, update BIOS\n",
1140 			 match->ident);
1141 		return false;
1142 	}
1143 
1144 enable_64bit:
1145 	dev_warn(&pdev->dev, "%s: enabling 64bit DMA\n", match->ident);
1146 	return true;
1147 }
1148 
1149 static bool ahci_broken_system_poweroff(struct pci_dev *pdev)
1150 {
1151 	static const struct dmi_system_id broken_systems[] = {
1152 		{
1153 			.ident = "HP Compaq nx6310",
1154 			.matches = {
1155 				DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1156 				DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6310"),
1157 			},
1158 			/* PCI slot number of the controller */
1159 			.driver_data = (void *)0x1FUL,
1160 		},
1161 		{
1162 			.ident = "HP Compaq 6720s",
1163 			.matches = {
1164 				DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1165 				DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6720s"),
1166 			},
1167 			/* PCI slot number of the controller */
1168 			.driver_data = (void *)0x1FUL,
1169 		},
1170 
1171 		{ }	/* terminate list */
1172 	};
1173 	const struct dmi_system_id *dmi = dmi_first_match(broken_systems);
1174 
1175 	if (dmi) {
1176 		unsigned long slot = (unsigned long)dmi->driver_data;
1177 		/* apply the quirk only to on-board controllers */
1178 		return slot == PCI_SLOT(pdev->devfn);
1179 	}
1180 
1181 	return false;
1182 }
1183 
1184 static bool ahci_broken_suspend(struct pci_dev *pdev)
1185 {
1186 	static const struct dmi_system_id sysids[] = {
1187 		/*
1188 		 * On HP dv[4-6] and HDX18 with earlier BIOSen, link
1189 		 * to the harddisk doesn't become online after
1190 		 * resuming from STR.  Warn and fail suspend.
1191 		 *
1192 		 * http://bugzilla.kernel.org/show_bug.cgi?id=12276
1193 		 *
1194 		 * Use dates instead of versions to match as HP is
1195 		 * apparently recycling both product and version
1196 		 * strings.
1197 		 *
1198 		 * http://bugzilla.kernel.org/show_bug.cgi?id=15462
1199 		 */
1200 		{
1201 			.ident = "dv4",
1202 			.matches = {
1203 				DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1204 				DMI_MATCH(DMI_PRODUCT_NAME,
1205 					  "HP Pavilion dv4 Notebook PC"),
1206 			},
1207 			.driver_data = "20090105",	/* F.30 */
1208 		},
1209 		{
1210 			.ident = "dv5",
1211 			.matches = {
1212 				DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1213 				DMI_MATCH(DMI_PRODUCT_NAME,
1214 					  "HP Pavilion dv5 Notebook PC"),
1215 			},
1216 			.driver_data = "20090506",	/* F.16 */
1217 		},
1218 		{
1219 			.ident = "dv6",
1220 			.matches = {
1221 				DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1222 				DMI_MATCH(DMI_PRODUCT_NAME,
1223 					  "HP Pavilion dv6 Notebook PC"),
1224 			},
1225 			.driver_data = "20090423",	/* F.21 */
1226 		},
1227 		{
1228 			.ident = "HDX18",
1229 			.matches = {
1230 				DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1231 				DMI_MATCH(DMI_PRODUCT_NAME,
1232 					  "HP HDX18 Notebook PC"),
1233 			},
1234 			.driver_data = "20090430",	/* F.23 */
1235 		},
1236 		/*
1237 		 * Acer eMachines G725 has the same problem.  BIOS
1238 		 * V1.03 is known to be broken.  V3.04 is known to
1239 		 * work.  Between, there are V1.06, V2.06 and V3.03
1240 		 * that we don't have much idea about.  For now,
1241 		 * blacklist anything older than V3.04.
1242 		 *
1243 		 * http://bugzilla.kernel.org/show_bug.cgi?id=15104
1244 		 */
1245 		{
1246 			.ident = "G725",
1247 			.matches = {
1248 				DMI_MATCH(DMI_SYS_VENDOR, "eMachines"),
1249 				DMI_MATCH(DMI_PRODUCT_NAME, "eMachines G725"),
1250 			},
1251 			.driver_data = "20091216",	/* V3.04 */
1252 		},
1253 		{ }	/* terminate list */
1254 	};
1255 	const struct dmi_system_id *dmi = dmi_first_match(sysids);
1256 	int year, month, date;
1257 	char buf[9];
1258 
1259 	if (!dmi || pdev->bus->number || pdev->devfn != PCI_DEVFN(0x1f, 2))
1260 		return false;
1261 
1262 	dmi_get_date(DMI_BIOS_DATE, &year, &month, &date);
1263 	snprintf(buf, sizeof(buf), "%04d%02d%02d", year, month, date);
1264 
1265 	return strcmp(buf, dmi->driver_data) < 0;
1266 }
1267 
1268 static bool ahci_broken_lpm(struct pci_dev *pdev)
1269 {
1270 	static const struct dmi_system_id sysids[] = {
1271 		/* Various Lenovo 50 series have LPM issues with older BIOSen */
1272 		{
1273 			.matches = {
1274 				DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1275 				DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X250"),
1276 			},
1277 			.driver_data = "20180406", /* 1.31 */
1278 		},
1279 		{
1280 			.matches = {
1281 				DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1282 				DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad L450"),
1283 			},
1284 			.driver_data = "20180420", /* 1.28 */
1285 		},
1286 		{
1287 			.matches = {
1288 				DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1289 				DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T450s"),
1290 			},
1291 			.driver_data = "20180315", /* 1.33 */
1292 		},
1293 		{
1294 			.matches = {
1295 				DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1296 				DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad W541"),
1297 			},
1298 			/*
1299 			 * Note date based on release notes, 2.35 has been
1300 			 * reported to be good, but I've been unable to get
1301 			 * a hold of the reporter to get the DMI BIOS date.
1302 			 * TODO: fix this.
1303 			 */
1304 			.driver_data = "20180310", /* 2.35 */
1305 		},
1306 		{ }	/* terminate list */
1307 	};
1308 	const struct dmi_system_id *dmi = dmi_first_match(sysids);
1309 	int year, month, date;
1310 	char buf[9];
1311 
1312 	if (!dmi)
1313 		return false;
1314 
1315 	dmi_get_date(DMI_BIOS_DATE, &year, &month, &date);
1316 	snprintf(buf, sizeof(buf), "%04d%02d%02d", year, month, date);
1317 
1318 	return strcmp(buf, dmi->driver_data) < 0;
1319 }
1320 
1321 static bool ahci_broken_online(struct pci_dev *pdev)
1322 {
1323 #define ENCODE_BUSDEVFN(bus, slot, func)			\
1324 	(void *)(unsigned long)(((bus) << 8) | PCI_DEVFN((slot), (func)))
1325 	static const struct dmi_system_id sysids[] = {
1326 		/*
1327 		 * There are several gigabyte boards which use
1328 		 * SIMG5723s configured as hardware RAID.  Certain
1329 		 * 5723 firmware revisions shipped there keep the link
1330 		 * online but fail to answer properly to SRST or
1331 		 * IDENTIFY when no device is attached downstream
1332 		 * causing libata to retry quite a few times leading
1333 		 * to excessive detection delay.
1334 		 *
1335 		 * As these firmwares respond to the second reset try
1336 		 * with invalid device signature, considering unknown
1337 		 * sig as offline works around the problem acceptably.
1338 		 */
1339 		{
1340 			.ident = "EP45-DQ6",
1341 			.matches = {
1342 				DMI_MATCH(DMI_BOARD_VENDOR,
1343 					  "Gigabyte Technology Co., Ltd."),
1344 				DMI_MATCH(DMI_BOARD_NAME, "EP45-DQ6"),
1345 			},
1346 			.driver_data = ENCODE_BUSDEVFN(0x0a, 0x00, 0),
1347 		},
1348 		{
1349 			.ident = "EP45-DS5",
1350 			.matches = {
1351 				DMI_MATCH(DMI_BOARD_VENDOR,
1352 					  "Gigabyte Technology Co., Ltd."),
1353 				DMI_MATCH(DMI_BOARD_NAME, "EP45-DS5"),
1354 			},
1355 			.driver_data = ENCODE_BUSDEVFN(0x03, 0x00, 0),
1356 		},
1357 		{ }	/* terminate list */
1358 	};
1359 #undef ENCODE_BUSDEVFN
1360 	const struct dmi_system_id *dmi = dmi_first_match(sysids);
1361 	unsigned int val;
1362 
1363 	if (!dmi)
1364 		return false;
1365 
1366 	val = (unsigned long)dmi->driver_data;
1367 
1368 	return pdev->bus->number == (val >> 8) && pdev->devfn == (val & 0xff);
1369 }
1370 
1371 static bool ahci_broken_devslp(struct pci_dev *pdev)
1372 {
1373 	/* device with broken DEVSLP but still showing SDS capability */
1374 	static const struct pci_device_id ids[] = {
1375 		{ PCI_VDEVICE(INTEL, 0x0f23)}, /* Valleyview SoC */
1376 		{}
1377 	};
1378 
1379 	return pci_match_id(ids, pdev);
1380 }
1381 
1382 #ifdef CONFIG_ATA_ACPI
1383 static void ahci_gtf_filter_workaround(struct ata_host *host)
1384 {
1385 	static const struct dmi_system_id sysids[] = {
1386 		/*
1387 		 * Aspire 3810T issues a bunch of SATA enable commands
1388 		 * via _GTF including an invalid one and one which is
1389 		 * rejected by the device.  Among the successful ones
1390 		 * is FPDMA non-zero offset enable which when enabled
1391 		 * only on the drive side leads to NCQ command
1392 		 * failures.  Filter it out.
1393 		 */
1394 		{
1395 			.ident = "Aspire 3810T",
1396 			.matches = {
1397 				DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
1398 				DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3810T"),
1399 			},
1400 			.driver_data = (void *)ATA_ACPI_FILTER_FPDMA_OFFSET,
1401 		},
1402 		{ }
1403 	};
1404 	const struct dmi_system_id *dmi = dmi_first_match(sysids);
1405 	unsigned int filter;
1406 	int i;
1407 
1408 	if (!dmi)
1409 		return;
1410 
1411 	filter = (unsigned long)dmi->driver_data;
1412 	dev_info(host->dev, "applying extra ACPI _GTF filter 0x%x for %s\n",
1413 		 filter, dmi->ident);
1414 
1415 	for (i = 0; i < host->n_ports; i++) {
1416 		struct ata_port *ap = host->ports[i];
1417 		struct ata_link *link;
1418 		struct ata_device *dev;
1419 
1420 		ata_for_each_link(link, ap, EDGE)
1421 			ata_for_each_dev(dev, link, ALL)
1422 				dev->gtf_filter |= filter;
1423 	}
1424 }
1425 #else
1426 static inline void ahci_gtf_filter_workaround(struct ata_host *host)
1427 {}
1428 #endif
1429 
1430 /*
1431  * On the Acer Aspire Switch Alpha 12, sometimes all SATA ports are detected
1432  * as DUMMY, or detected but eventually get a "link down" and never get up
1433  * again. When this happens, CAP.NP may hold a value of 0x00 or 0x01, and the
1434  * port_map may hold a value of 0x00.
1435  *
1436  * Overriding CAP.NP to 0x02 and the port_map to 0x7 will reveal all 3 ports
1437  * and can significantly reduce the occurrence of the problem.
1438  *
1439  * https://bugzilla.kernel.org/show_bug.cgi?id=189471
1440  */
1441 static void acer_sa5_271_workaround(struct ahci_host_priv *hpriv,
1442 				    struct pci_dev *pdev)
1443 {
1444 	static const struct dmi_system_id sysids[] = {
1445 		{
1446 			.ident = "Acer Switch Alpha 12",
1447 			.matches = {
1448 				DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
1449 				DMI_MATCH(DMI_PRODUCT_NAME, "Switch SA5-271")
1450 			},
1451 		},
1452 		{ }
1453 	};
1454 
1455 	if (dmi_check_system(sysids)) {
1456 		dev_info(&pdev->dev, "enabling Acer Switch Alpha 12 workaround\n");
1457 		if ((hpriv->saved_cap & 0xC734FF00) == 0xC734FF00) {
1458 			hpriv->port_map = 0x7;
1459 			hpriv->cap = 0xC734FF02;
1460 		}
1461 	}
1462 }
1463 
1464 #ifdef CONFIG_ARM64
1465 /*
1466  * Due to ERRATA#22536, ThunderX needs to handle HOST_IRQ_STAT differently.
1467  * Workaround is to make sure all pending IRQs are served before leaving
1468  * handler.
1469  */
1470 static irqreturn_t ahci_thunderx_irq_handler(int irq, void *dev_instance)
1471 {
1472 	struct ata_host *host = dev_instance;
1473 	struct ahci_host_priv *hpriv;
1474 	unsigned int rc = 0;
1475 	void __iomem *mmio;
1476 	u32 irq_stat, irq_masked;
1477 	unsigned int handled = 1;
1478 
1479 	VPRINTK("ENTER\n");
1480 	hpriv = host->private_data;
1481 	mmio = hpriv->mmio;
1482 	irq_stat = readl(mmio + HOST_IRQ_STAT);
1483 	if (!irq_stat)
1484 		return IRQ_NONE;
1485 
1486 	do {
1487 		irq_masked = irq_stat & hpriv->port_map;
1488 		spin_lock(&host->lock);
1489 		rc = ahci_handle_port_intr(host, irq_masked);
1490 		if (!rc)
1491 			handled = 0;
1492 		writel(irq_stat, mmio + HOST_IRQ_STAT);
1493 		irq_stat = readl(mmio + HOST_IRQ_STAT);
1494 		spin_unlock(&host->lock);
1495 	} while (irq_stat);
1496 	VPRINTK("EXIT\n");
1497 
1498 	return IRQ_RETVAL(handled);
1499 }
1500 #endif
1501 
1502 static void ahci_remap_check(struct pci_dev *pdev, int bar,
1503 		struct ahci_host_priv *hpriv)
1504 {
1505 	int i, count = 0;
1506 	u32 cap;
1507 
1508 	/*
1509 	 * Check if this device might have remapped nvme devices.
1510 	 */
1511 	if (pdev->vendor != PCI_VENDOR_ID_INTEL ||
1512 	    pci_resource_len(pdev, bar) < SZ_512K ||
1513 	    bar != AHCI_PCI_BAR_STANDARD ||
1514 	    !(readl(hpriv->mmio + AHCI_VSCAP) & 1))
1515 		return;
1516 
1517 	cap = readq(hpriv->mmio + AHCI_REMAP_CAP);
1518 	for (i = 0; i < AHCI_MAX_REMAP; i++) {
1519 		if ((cap & (1 << i)) == 0)
1520 			continue;
1521 		if (readl(hpriv->mmio + ahci_remap_dcc(i))
1522 				!= PCI_CLASS_STORAGE_EXPRESS)
1523 			continue;
1524 
1525 		/* We've found a remapped device */
1526 		count++;
1527 	}
1528 
1529 	if (!count)
1530 		return;
1531 
1532 	dev_warn(&pdev->dev, "Found %d remapped NVMe devices.\n", count);
1533 	dev_warn(&pdev->dev,
1534 		 "Switch your BIOS from RAID to AHCI mode to use them.\n");
1535 
1536 	/*
1537 	 * Don't rely on the msi-x capability in the remap case,
1538 	 * share the legacy interrupt across ahci and remapped devices.
1539 	 */
1540 	hpriv->flags |= AHCI_HFLAG_NO_MSI;
1541 }
1542 
1543 static int ahci_get_irq_vector(struct ata_host *host, int port)
1544 {
1545 	return pci_irq_vector(to_pci_dev(host->dev), port);
1546 }
1547 
1548 static int ahci_init_msi(struct pci_dev *pdev, unsigned int n_ports,
1549 			struct ahci_host_priv *hpriv)
1550 {
1551 	int nvec;
1552 
1553 	if (hpriv->flags & AHCI_HFLAG_NO_MSI)
1554 		return -ENODEV;
1555 
1556 	/*
1557 	 * If number of MSIs is less than number of ports then Sharing Last
1558 	 * Message mode could be enforced. In this case assume that advantage
1559 	 * of multipe MSIs is negated and use single MSI mode instead.
1560 	 */
1561 	if (n_ports > 1) {
1562 		nvec = pci_alloc_irq_vectors(pdev, n_ports, INT_MAX,
1563 				PCI_IRQ_MSIX | PCI_IRQ_MSI);
1564 		if (nvec > 0) {
1565 			if (!(readl(hpriv->mmio + HOST_CTL) & HOST_MRSM)) {
1566 				hpriv->get_irq_vector = ahci_get_irq_vector;
1567 				hpriv->flags |= AHCI_HFLAG_MULTI_MSI;
1568 				return nvec;
1569 			}
1570 
1571 			/*
1572 			 * Fallback to single MSI mode if the controller
1573 			 * enforced MRSM mode.
1574 			 */
1575 			printk(KERN_INFO
1576 				"ahci: MRSM is on, fallback to single MSI\n");
1577 			pci_free_irq_vectors(pdev);
1578 		}
1579 	}
1580 
1581 	/*
1582 	 * If the host is not capable of supporting per-port vectors, fall
1583 	 * back to single MSI before finally attempting single MSI-X.
1584 	 */
1585 	nvec = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSI);
1586 	if (nvec == 1)
1587 		return nvec;
1588 	return pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSIX);
1589 }
1590 
1591 static void ahci_update_initial_lpm_policy(struct ata_port *ap,
1592 					   struct ahci_host_priv *hpriv)
1593 {
1594 	int policy = CONFIG_SATA_MOBILE_LPM_POLICY;
1595 
1596 
1597 	/* Ignore processing for non mobile platforms */
1598 	if (!(hpriv->flags & AHCI_HFLAG_IS_MOBILE))
1599 		return;
1600 
1601 	/* user modified policy via module param */
1602 	if (mobile_lpm_policy != -1) {
1603 		policy = mobile_lpm_policy;
1604 		goto update_policy;
1605 	}
1606 
1607 #ifdef CONFIG_ACPI
1608 	if (policy > ATA_LPM_MED_POWER &&
1609 	    (acpi_gbl_FADT.flags & ACPI_FADT_LOW_POWER_S0)) {
1610 		if (hpriv->cap & HOST_CAP_PART)
1611 			policy = ATA_LPM_MIN_POWER_WITH_PARTIAL;
1612 		else if (hpriv->cap & HOST_CAP_SSC)
1613 			policy = ATA_LPM_MIN_POWER;
1614 	}
1615 #endif
1616 
1617 update_policy:
1618 	if (policy >= ATA_LPM_UNKNOWN && policy <= ATA_LPM_MIN_POWER)
1619 		ap->target_lpm_policy = policy;
1620 }
1621 
1622 static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
1623 {
1624 	unsigned int board_id = ent->driver_data;
1625 	struct ata_port_info pi = ahci_port_info[board_id];
1626 	const struct ata_port_info *ppi[] = { &pi, NULL };
1627 	struct device *dev = &pdev->dev;
1628 	struct ahci_host_priv *hpriv;
1629 	struct ata_host *host;
1630 	int n_ports, i, rc;
1631 	int ahci_pci_bar = AHCI_PCI_BAR_STANDARD;
1632 
1633 	VPRINTK("ENTER\n");
1634 
1635 	WARN_ON((int)ATA_MAX_QUEUE > AHCI_MAX_CMDS);
1636 
1637 	ata_print_version_once(&pdev->dev, DRV_VERSION);
1638 
1639 	/* The AHCI driver can only drive the SATA ports, the PATA driver
1640 	   can drive them all so if both drivers are selected make sure
1641 	   AHCI stays out of the way */
1642 	if (pdev->vendor == PCI_VENDOR_ID_MARVELL && !marvell_enable)
1643 		return -ENODEV;
1644 
1645 	/* Apple BIOS on MCP89 prevents us using AHCI */
1646 	if (is_mcp89_apple(pdev))
1647 		ahci_mcp89_apple_enable(pdev);
1648 
1649 	/* Promise's PDC42819 is a SAS/SATA controller that has an AHCI mode.
1650 	 * At the moment, we can only use the AHCI mode. Let the users know
1651 	 * that for SAS drives they're out of luck.
1652 	 */
1653 	if (pdev->vendor == PCI_VENDOR_ID_PROMISE)
1654 		dev_info(&pdev->dev,
1655 			 "PDC42819 can only drive SATA devices with this driver\n");
1656 
1657 	/* Some devices use non-standard BARs */
1658 	if (pdev->vendor == PCI_VENDOR_ID_STMICRO && pdev->device == 0xCC06)
1659 		ahci_pci_bar = AHCI_PCI_BAR_STA2X11;
1660 	else if (pdev->vendor == 0x1c44 && pdev->device == 0x8000)
1661 		ahci_pci_bar = AHCI_PCI_BAR_ENMOTUS;
1662 	else if (pdev->vendor == PCI_VENDOR_ID_CAVIUM) {
1663 		if (pdev->device == 0xa01c)
1664 			ahci_pci_bar = AHCI_PCI_BAR_CAVIUM;
1665 		if (pdev->device == 0xa084)
1666 			ahci_pci_bar = AHCI_PCI_BAR_CAVIUM_GEN5;
1667 	}
1668 
1669 	/* acquire resources */
1670 	rc = pcim_enable_device(pdev);
1671 	if (rc)
1672 		return rc;
1673 
1674 	if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
1675 	    (pdev->device == 0x2652 || pdev->device == 0x2653)) {
1676 		u8 map;
1677 
1678 		/* ICH6s share the same PCI ID for both piix and ahci
1679 		 * modes.  Enabling ahci mode while MAP indicates
1680 		 * combined mode is a bad idea.  Yield to ata_piix.
1681 		 */
1682 		pci_read_config_byte(pdev, ICH_MAP, &map);
1683 		if (map & 0x3) {
1684 			dev_info(&pdev->dev,
1685 				 "controller is in combined mode, can't enable AHCI mode\n");
1686 			return -ENODEV;
1687 		}
1688 	}
1689 
1690 	/* AHCI controllers often implement SFF compatible interface.
1691 	 * Grab all PCI BARs just in case.
1692 	 */
1693 	rc = pcim_iomap_regions_request_all(pdev, 1 << ahci_pci_bar, DRV_NAME);
1694 	if (rc == -EBUSY)
1695 		pcim_pin_device(pdev);
1696 	if (rc)
1697 		return rc;
1698 
1699 	hpriv = devm_kzalloc(dev, sizeof(*hpriv), GFP_KERNEL);
1700 	if (!hpriv)
1701 		return -ENOMEM;
1702 	hpriv->flags |= (unsigned long)pi.private_data;
1703 
1704 	/* MCP65 revision A1 and A2 can't do MSI */
1705 	if (board_id == board_ahci_mcp65 &&
1706 	    (pdev->revision == 0xa1 || pdev->revision == 0xa2))
1707 		hpriv->flags |= AHCI_HFLAG_NO_MSI;
1708 
1709 	/* SB800 does NOT need the workaround to ignore SERR_INTERNAL */
1710 	if (board_id == board_ahci_sb700 && pdev->revision >= 0x40)
1711 		hpriv->flags &= ~AHCI_HFLAG_IGN_SERR_INTERNAL;
1712 
1713 	/* only some SB600s can do 64bit DMA */
1714 	if (ahci_sb600_enable_64bit(pdev))
1715 		hpriv->flags &= ~AHCI_HFLAG_32BIT_ONLY;
1716 
1717 	hpriv->mmio = pcim_iomap_table(pdev)[ahci_pci_bar];
1718 
1719 	/* detect remapped nvme devices */
1720 	ahci_remap_check(pdev, ahci_pci_bar, hpriv);
1721 
1722 	/* must set flag prior to save config in order to take effect */
1723 	if (ahci_broken_devslp(pdev))
1724 		hpriv->flags |= AHCI_HFLAG_NO_DEVSLP;
1725 
1726 #ifdef CONFIG_ARM64
1727 	if (pdev->vendor == 0x177d && pdev->device == 0xa01c)
1728 		hpriv->irq_handler = ahci_thunderx_irq_handler;
1729 #endif
1730 
1731 	/* save initial config */
1732 	ahci_pci_save_initial_config(pdev, hpriv);
1733 
1734 	/* prepare host */
1735 	if (hpriv->cap & HOST_CAP_NCQ) {
1736 		pi.flags |= ATA_FLAG_NCQ;
1737 		/*
1738 		 * Auto-activate optimization is supposed to be
1739 		 * supported on all AHCI controllers indicating NCQ
1740 		 * capability, but it seems to be broken on some
1741 		 * chipsets including NVIDIAs.
1742 		 */
1743 		if (!(hpriv->flags & AHCI_HFLAG_NO_FPDMA_AA))
1744 			pi.flags |= ATA_FLAG_FPDMA_AA;
1745 
1746 		/*
1747 		 * All AHCI controllers should be forward-compatible
1748 		 * with the new auxiliary field. This code should be
1749 		 * conditionalized if any buggy AHCI controllers are
1750 		 * encountered.
1751 		 */
1752 		pi.flags |= ATA_FLAG_FPDMA_AUX;
1753 	}
1754 
1755 	if (hpriv->cap & HOST_CAP_PMP)
1756 		pi.flags |= ATA_FLAG_PMP;
1757 
1758 	ahci_set_em_messages(hpriv, &pi);
1759 
1760 	if (ahci_broken_system_poweroff(pdev)) {
1761 		pi.flags |= ATA_FLAG_NO_POWEROFF_SPINDOWN;
1762 		dev_info(&pdev->dev,
1763 			"quirky BIOS, skipping spindown on poweroff\n");
1764 	}
1765 
1766 	if (ahci_broken_lpm(pdev)) {
1767 		pi.flags |= ATA_FLAG_NO_LPM;
1768 		dev_warn(&pdev->dev,
1769 			 "BIOS update required for Link Power Management support\n");
1770 	}
1771 
1772 	if (ahci_broken_suspend(pdev)) {
1773 		hpriv->flags |= AHCI_HFLAG_NO_SUSPEND;
1774 		dev_warn(&pdev->dev,
1775 			 "BIOS update required for suspend/resume\n");
1776 	}
1777 
1778 	if (ahci_broken_online(pdev)) {
1779 		hpriv->flags |= AHCI_HFLAG_SRST_TOUT_IS_OFFLINE;
1780 		dev_info(&pdev->dev,
1781 			 "online status unreliable, applying workaround\n");
1782 	}
1783 
1784 
1785 	/* Acer SA5-271 workaround modifies private_data */
1786 	acer_sa5_271_workaround(hpriv, pdev);
1787 
1788 	/* CAP.NP sometimes indicate the index of the last enabled
1789 	 * port, at other times, that of the last possible port, so
1790 	 * determining the maximum port number requires looking at
1791 	 * both CAP.NP and port_map.
1792 	 */
1793 	n_ports = max(ahci_nr_ports(hpriv->cap), fls(hpriv->port_map));
1794 
1795 	host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
1796 	if (!host)
1797 		return -ENOMEM;
1798 	host->private_data = hpriv;
1799 
1800 	if (ahci_init_msi(pdev, n_ports, hpriv) < 0) {
1801 		/* legacy intx interrupts */
1802 		pci_intx(pdev, 1);
1803 	}
1804 	hpriv->irq = pci_irq_vector(pdev, 0);
1805 
1806 	if (!(hpriv->cap & HOST_CAP_SSS) || ahci_ignore_sss)
1807 		host->flags |= ATA_HOST_PARALLEL_SCAN;
1808 	else
1809 		dev_info(&pdev->dev, "SSS flag set, parallel bus scan disabled\n");
1810 
1811 	if (pi.flags & ATA_FLAG_EM)
1812 		ahci_reset_em(host);
1813 
1814 	for (i = 0; i < host->n_ports; i++) {
1815 		struct ata_port *ap = host->ports[i];
1816 
1817 		ata_port_pbar_desc(ap, ahci_pci_bar, -1, "abar");
1818 		ata_port_pbar_desc(ap, ahci_pci_bar,
1819 				   0x100 + ap->port_no * 0x80, "port");
1820 
1821 		/* set enclosure management message type */
1822 		if (ap->flags & ATA_FLAG_EM)
1823 			ap->em_message_type = hpriv->em_msg_type;
1824 
1825 		ahci_update_initial_lpm_policy(ap, hpriv);
1826 
1827 		/* disabled/not-implemented port */
1828 		if (!(hpriv->port_map & (1 << i)))
1829 			ap->ops = &ata_dummy_port_ops;
1830 	}
1831 
1832 	/* apply workaround for ASUS P5W DH Deluxe mainboard */
1833 	ahci_p5wdh_workaround(host);
1834 
1835 	/* apply gtf filter quirk */
1836 	ahci_gtf_filter_workaround(host);
1837 
1838 	/* initialize adapter */
1839 	rc = ahci_configure_dma_masks(pdev, hpriv->cap & HOST_CAP_64);
1840 	if (rc)
1841 		return rc;
1842 
1843 	rc = ahci_pci_reset_controller(host);
1844 	if (rc)
1845 		return rc;
1846 
1847 	ahci_pci_init_controller(host);
1848 	ahci_pci_print_info(host);
1849 
1850 	pci_set_master(pdev);
1851 
1852 	rc = ahci_host_activate(host, &ahci_sht);
1853 	if (rc)
1854 		return rc;
1855 
1856 	pm_runtime_put_noidle(&pdev->dev);
1857 	return 0;
1858 }
1859 
1860 static void ahci_remove_one(struct pci_dev *pdev)
1861 {
1862 	pm_runtime_get_noresume(&pdev->dev);
1863 	ata_pci_remove_one(pdev);
1864 }
1865 
1866 module_pci_driver(ahci_pci_driver);
1867 
1868 MODULE_AUTHOR("Jeff Garzik");
1869 MODULE_DESCRIPTION("AHCI SATA low-level driver");
1870 MODULE_LICENSE("GPL");
1871 MODULE_DEVICE_TABLE(pci, ahci_pci_tbl);
1872 MODULE_VERSION(DRV_VERSION);
1873