xref: /openbmc/linux/drivers/ata/ahci.c (revision 4e042f02)
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 <scsi/scsi_host.h>
30 #include <scsi/scsi_cmnd.h>
31 #include <linux/libata.h>
32 #include <linux/ahci-remap.h>
33 #include <linux/io-64-nonatomic-lo-hi.h>
34 #include "ahci.h"
35 
36 #define DRV_NAME	"ahci"
37 #define DRV_VERSION	"3.0"
38 
39 enum {
40 	AHCI_PCI_BAR_STA2X11	= 0,
41 	AHCI_PCI_BAR_CAVIUM	= 0,
42 	AHCI_PCI_BAR_LOONGSON	= 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_low_power,
53 	board_ahci_no_debounce_delay,
54 	board_ahci_nomsi,
55 	board_ahci_noncq,
56 	board_ahci_nosntf,
57 	board_ahci_yes_fbs,
58 
59 	/* board IDs for specific chipsets in alphabetical order */
60 	board_ahci_al,
61 	board_ahci_avn,
62 	board_ahci_mcp65,
63 	board_ahci_mcp77,
64 	board_ahci_mcp89,
65 	board_ahci_mv,
66 	board_ahci_sb600,
67 	board_ahci_sb700,	/* for SB700 and SB800 */
68 	board_ahci_vt8251,
69 
70 	/*
71 	 * board IDs for Intel chipsets that support more than 6 ports
72 	 * *and* end up needing the PCS quirk.
73 	 */
74 	board_ahci_pcs7,
75 
76 	/* aliases */
77 	board_ahci_mcp_linux	= board_ahci_mcp65,
78 	board_ahci_mcp67	= board_ahci_mcp65,
79 	board_ahci_mcp73	= board_ahci_mcp65,
80 	board_ahci_mcp79	= board_ahci_mcp77,
81 };
82 
83 static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
84 static void ahci_remove_one(struct pci_dev *dev);
85 static void ahci_shutdown_one(struct pci_dev *dev);
86 static void ahci_intel_pcs_quirk(struct pci_dev *pdev, struct ahci_host_priv *hpriv);
87 static int ahci_vt8251_hardreset(struct ata_link *link, unsigned int *class,
88 				 unsigned long deadline);
89 static int ahci_avn_hardreset(struct ata_link *link, unsigned int *class,
90 			      unsigned long deadline);
91 static void ahci_mcp89_apple_enable(struct pci_dev *pdev);
92 static bool is_mcp89_apple(struct pci_dev *pdev);
93 static int ahci_p5wdh_hardreset(struct ata_link *link, unsigned int *class,
94 				unsigned long deadline);
95 #ifdef CONFIG_PM
96 static int ahci_pci_device_runtime_suspend(struct device *dev);
97 static int ahci_pci_device_runtime_resume(struct device *dev);
98 #ifdef CONFIG_PM_SLEEP
99 static int ahci_pci_device_suspend(struct device *dev);
100 static int ahci_pci_device_resume(struct device *dev);
101 #endif
102 #endif /* CONFIG_PM */
103 
104 static const struct scsi_host_template ahci_sht = {
105 	AHCI_SHT("ahci"),
106 };
107 
108 static struct ata_port_operations ahci_vt8251_ops = {
109 	.inherits		= &ahci_ops,
110 	.hardreset		= ahci_vt8251_hardreset,
111 };
112 
113 static struct ata_port_operations ahci_p5wdh_ops = {
114 	.inherits		= &ahci_ops,
115 	.hardreset		= ahci_p5wdh_hardreset,
116 };
117 
118 static struct ata_port_operations ahci_avn_ops = {
119 	.inherits		= &ahci_ops,
120 	.hardreset		= ahci_avn_hardreset,
121 };
122 
123 static const struct ata_port_info ahci_port_info[] = {
124 	/* by features */
125 	[board_ahci] = {
126 		.flags		= AHCI_FLAG_COMMON,
127 		.pio_mask	= ATA_PIO4,
128 		.udma_mask	= ATA_UDMA6,
129 		.port_ops	= &ahci_ops,
130 	},
131 	[board_ahci_ign_iferr] = {
132 		AHCI_HFLAGS	(AHCI_HFLAG_IGN_IRQ_IF_ERR),
133 		.flags		= AHCI_FLAG_COMMON,
134 		.pio_mask	= ATA_PIO4,
135 		.udma_mask	= ATA_UDMA6,
136 		.port_ops	= &ahci_ops,
137 	},
138 	[board_ahci_low_power] = {
139 		AHCI_HFLAGS	(AHCI_HFLAG_USE_LPM_POLICY),
140 		.flags		= AHCI_FLAG_COMMON,
141 		.pio_mask	= ATA_PIO4,
142 		.udma_mask	= ATA_UDMA6,
143 		.port_ops	= &ahci_ops,
144 	},
145 	[board_ahci_no_debounce_delay] = {
146 		.flags		= AHCI_FLAG_COMMON,
147 		.link_flags	= ATA_LFLAG_NO_DEBOUNCE_DELAY,
148 		.pio_mask	= ATA_PIO4,
149 		.udma_mask	= ATA_UDMA6,
150 		.port_ops	= &ahci_ops,
151 	},
152 	[board_ahci_nomsi] = {
153 		AHCI_HFLAGS	(AHCI_HFLAG_NO_MSI),
154 		.flags		= AHCI_FLAG_COMMON,
155 		.pio_mask	= ATA_PIO4,
156 		.udma_mask	= ATA_UDMA6,
157 		.port_ops	= &ahci_ops,
158 	},
159 	[board_ahci_noncq] = {
160 		AHCI_HFLAGS	(AHCI_HFLAG_NO_NCQ),
161 		.flags		= AHCI_FLAG_COMMON,
162 		.pio_mask	= ATA_PIO4,
163 		.udma_mask	= ATA_UDMA6,
164 		.port_ops	= &ahci_ops,
165 	},
166 	[board_ahci_nosntf] = {
167 		AHCI_HFLAGS	(AHCI_HFLAG_NO_SNTF),
168 		.flags		= AHCI_FLAG_COMMON,
169 		.pio_mask	= ATA_PIO4,
170 		.udma_mask	= ATA_UDMA6,
171 		.port_ops	= &ahci_ops,
172 	},
173 	[board_ahci_yes_fbs] = {
174 		AHCI_HFLAGS	(AHCI_HFLAG_YES_FBS),
175 		.flags		= AHCI_FLAG_COMMON,
176 		.pio_mask	= ATA_PIO4,
177 		.udma_mask	= ATA_UDMA6,
178 		.port_ops	= &ahci_ops,
179 	},
180 	/* by chipsets */
181 	[board_ahci_al] = {
182 		AHCI_HFLAGS	(AHCI_HFLAG_NO_PMP | AHCI_HFLAG_NO_MSI),
183 		.flags		= AHCI_FLAG_COMMON,
184 		.pio_mask	= ATA_PIO4,
185 		.udma_mask	= ATA_UDMA6,
186 		.port_ops	= &ahci_ops,
187 	},
188 	[board_ahci_avn] = {
189 		.flags		= AHCI_FLAG_COMMON,
190 		.pio_mask	= ATA_PIO4,
191 		.udma_mask	= ATA_UDMA6,
192 		.port_ops	= &ahci_avn_ops,
193 	},
194 	[board_ahci_mcp65] = {
195 		AHCI_HFLAGS	(AHCI_HFLAG_NO_FPDMA_AA | AHCI_HFLAG_NO_PMP |
196 				 AHCI_HFLAG_YES_NCQ),
197 		.flags		= AHCI_FLAG_COMMON | ATA_FLAG_NO_DIPM,
198 		.pio_mask	= ATA_PIO4,
199 		.udma_mask	= ATA_UDMA6,
200 		.port_ops	= &ahci_ops,
201 	},
202 	[board_ahci_mcp77] = {
203 		AHCI_HFLAGS	(AHCI_HFLAG_NO_FPDMA_AA | AHCI_HFLAG_NO_PMP),
204 		.flags		= AHCI_FLAG_COMMON,
205 		.pio_mask	= ATA_PIO4,
206 		.udma_mask	= ATA_UDMA6,
207 		.port_ops	= &ahci_ops,
208 	},
209 	[board_ahci_mcp89] = {
210 		AHCI_HFLAGS	(AHCI_HFLAG_NO_FPDMA_AA),
211 		.flags		= AHCI_FLAG_COMMON,
212 		.pio_mask	= ATA_PIO4,
213 		.udma_mask	= ATA_UDMA6,
214 		.port_ops	= &ahci_ops,
215 	},
216 	[board_ahci_mv] = {
217 		AHCI_HFLAGS	(AHCI_HFLAG_NO_NCQ | AHCI_HFLAG_NO_MSI |
218 				 AHCI_HFLAG_MV_PATA | AHCI_HFLAG_NO_PMP),
219 		.flags		= ATA_FLAG_SATA | ATA_FLAG_PIO_DMA,
220 		.pio_mask	= ATA_PIO4,
221 		.udma_mask	= ATA_UDMA6,
222 		.port_ops	= &ahci_ops,
223 	},
224 	[board_ahci_sb600] = {
225 		AHCI_HFLAGS	(AHCI_HFLAG_IGN_SERR_INTERNAL |
226 				 AHCI_HFLAG_NO_MSI | AHCI_HFLAG_SECT255 |
227 				 AHCI_HFLAG_32BIT_ONLY),
228 		.flags		= AHCI_FLAG_COMMON,
229 		.pio_mask	= ATA_PIO4,
230 		.udma_mask	= ATA_UDMA6,
231 		.port_ops	= &ahci_pmp_retry_srst_ops,
232 	},
233 	[board_ahci_sb700] = {	/* for SB700 and SB800 */
234 		AHCI_HFLAGS	(AHCI_HFLAG_IGN_SERR_INTERNAL),
235 		.flags		= AHCI_FLAG_COMMON,
236 		.pio_mask	= ATA_PIO4,
237 		.udma_mask	= ATA_UDMA6,
238 		.port_ops	= &ahci_pmp_retry_srst_ops,
239 	},
240 	[board_ahci_vt8251] = {
241 		AHCI_HFLAGS	(AHCI_HFLAG_NO_NCQ | AHCI_HFLAG_NO_PMP),
242 		.flags		= AHCI_FLAG_COMMON,
243 		.pio_mask	= ATA_PIO4,
244 		.udma_mask	= ATA_UDMA6,
245 		.port_ops	= &ahci_vt8251_ops,
246 	},
247 	[board_ahci_pcs7] = {
248 		.flags		= AHCI_FLAG_COMMON,
249 		.pio_mask	= ATA_PIO4,
250 		.udma_mask	= ATA_UDMA6,
251 		.port_ops	= &ahci_ops,
252 	},
253 };
254 
255 static const struct pci_device_id ahci_pci_tbl[] = {
256 	/* Intel */
257 	{ PCI_VDEVICE(INTEL, 0x06d6), board_ahci }, /* Comet Lake PCH-H RAID */
258 	{ PCI_VDEVICE(INTEL, 0x2652), board_ahci }, /* ICH6 */
259 	{ PCI_VDEVICE(INTEL, 0x2653), board_ahci }, /* ICH6M */
260 	{ PCI_VDEVICE(INTEL, 0x27c1), board_ahci }, /* ICH7 */
261 	{ PCI_VDEVICE(INTEL, 0x27c5), board_ahci }, /* ICH7M */
262 	{ PCI_VDEVICE(INTEL, 0x27c3), board_ahci }, /* ICH7R */
263 	{ PCI_VDEVICE(AL, 0x5288), board_ahci_ign_iferr }, /* ULi M5288 */
264 	{ PCI_VDEVICE(INTEL, 0x2681), board_ahci }, /* ESB2 */
265 	{ PCI_VDEVICE(INTEL, 0x2682), board_ahci }, /* ESB2 */
266 	{ PCI_VDEVICE(INTEL, 0x2683), board_ahci }, /* ESB2 */
267 	{ PCI_VDEVICE(INTEL, 0x27c6), board_ahci }, /* ICH7-M DH */
268 	{ PCI_VDEVICE(INTEL, 0x2821), board_ahci }, /* ICH8 */
269 	{ PCI_VDEVICE(INTEL, 0x2822), board_ahci_nosntf }, /* ICH8/Lewisburg RAID*/
270 	{ PCI_VDEVICE(INTEL, 0x2824), board_ahci }, /* ICH8 */
271 	{ PCI_VDEVICE(INTEL, 0x2829), board_ahci }, /* ICH8M */
272 	{ PCI_VDEVICE(INTEL, 0x282a), board_ahci }, /* ICH8M */
273 	{ PCI_VDEVICE(INTEL, 0x2922), board_ahci }, /* ICH9 */
274 	{ PCI_VDEVICE(INTEL, 0x2923), board_ahci }, /* ICH9 */
275 	{ PCI_VDEVICE(INTEL, 0x2924), board_ahci }, /* ICH9 */
276 	{ PCI_VDEVICE(INTEL, 0x2925), board_ahci }, /* ICH9 */
277 	{ PCI_VDEVICE(INTEL, 0x2927), board_ahci }, /* ICH9 */
278 	{ PCI_VDEVICE(INTEL, 0x2929), board_ahci_low_power }, /* ICH9M */
279 	{ PCI_VDEVICE(INTEL, 0x292a), board_ahci_low_power }, /* ICH9M */
280 	{ PCI_VDEVICE(INTEL, 0x292b), board_ahci_low_power }, /* ICH9M */
281 	{ PCI_VDEVICE(INTEL, 0x292c), board_ahci_low_power }, /* ICH9M */
282 	{ PCI_VDEVICE(INTEL, 0x292f), board_ahci_low_power }, /* ICH9M */
283 	{ PCI_VDEVICE(INTEL, 0x294d), board_ahci }, /* ICH9 */
284 	{ PCI_VDEVICE(INTEL, 0x294e), board_ahci_low_power }, /* ICH9M */
285 	{ PCI_VDEVICE(INTEL, 0x502a), board_ahci }, /* Tolapai */
286 	{ PCI_VDEVICE(INTEL, 0x502b), board_ahci }, /* Tolapai */
287 	{ PCI_VDEVICE(INTEL, 0x3a05), board_ahci }, /* ICH10 */
288 	{ PCI_VDEVICE(INTEL, 0x3a22), board_ahci }, /* ICH10 */
289 	{ PCI_VDEVICE(INTEL, 0x3a25), board_ahci }, /* ICH10 */
290 	{ PCI_VDEVICE(INTEL, 0x3b22), board_ahci }, /* PCH AHCI */
291 	{ PCI_VDEVICE(INTEL, 0x3b23), board_ahci }, /* PCH AHCI */
292 	{ PCI_VDEVICE(INTEL, 0x3b24), board_ahci }, /* PCH RAID */
293 	{ PCI_VDEVICE(INTEL, 0x3b25), board_ahci }, /* PCH RAID */
294 	{ PCI_VDEVICE(INTEL, 0x3b29), board_ahci_low_power }, /* PCH M AHCI */
295 	{ PCI_VDEVICE(INTEL, 0x3b2b), board_ahci }, /* PCH RAID */
296 	{ PCI_VDEVICE(INTEL, 0x3b2c), board_ahci_low_power }, /* PCH M RAID */
297 	{ PCI_VDEVICE(INTEL, 0x3b2f), board_ahci }, /* PCH AHCI */
298 	{ PCI_VDEVICE(INTEL, 0x19b0), board_ahci_pcs7 }, /* DNV AHCI */
299 	{ PCI_VDEVICE(INTEL, 0x19b1), board_ahci_pcs7 }, /* DNV AHCI */
300 	{ PCI_VDEVICE(INTEL, 0x19b2), board_ahci_pcs7 }, /* DNV AHCI */
301 	{ PCI_VDEVICE(INTEL, 0x19b3), board_ahci_pcs7 }, /* DNV AHCI */
302 	{ PCI_VDEVICE(INTEL, 0x19b4), board_ahci_pcs7 }, /* DNV AHCI */
303 	{ PCI_VDEVICE(INTEL, 0x19b5), board_ahci_pcs7 }, /* DNV AHCI */
304 	{ PCI_VDEVICE(INTEL, 0x19b6), board_ahci_pcs7 }, /* DNV AHCI */
305 	{ PCI_VDEVICE(INTEL, 0x19b7), board_ahci_pcs7 }, /* DNV AHCI */
306 	{ PCI_VDEVICE(INTEL, 0x19bE), board_ahci_pcs7 }, /* DNV AHCI */
307 	{ PCI_VDEVICE(INTEL, 0x19bF), board_ahci_pcs7 }, /* DNV AHCI */
308 	{ PCI_VDEVICE(INTEL, 0x19c0), board_ahci_pcs7 }, /* DNV AHCI */
309 	{ PCI_VDEVICE(INTEL, 0x19c1), board_ahci_pcs7 }, /* DNV AHCI */
310 	{ PCI_VDEVICE(INTEL, 0x19c2), board_ahci_pcs7 }, /* DNV AHCI */
311 	{ PCI_VDEVICE(INTEL, 0x19c3), board_ahci_pcs7 }, /* DNV AHCI */
312 	{ PCI_VDEVICE(INTEL, 0x19c4), board_ahci_pcs7 }, /* DNV AHCI */
313 	{ PCI_VDEVICE(INTEL, 0x19c5), board_ahci_pcs7 }, /* DNV AHCI */
314 	{ PCI_VDEVICE(INTEL, 0x19c6), board_ahci_pcs7 }, /* DNV AHCI */
315 	{ PCI_VDEVICE(INTEL, 0x19c7), board_ahci_pcs7 }, /* DNV AHCI */
316 	{ PCI_VDEVICE(INTEL, 0x19cE), board_ahci_pcs7 }, /* DNV AHCI */
317 	{ PCI_VDEVICE(INTEL, 0x19cF), board_ahci_pcs7 }, /* DNV AHCI */
318 	{ PCI_VDEVICE(INTEL, 0x1c02), board_ahci }, /* CPT AHCI */
319 	{ PCI_VDEVICE(INTEL, 0x1c03), board_ahci_low_power }, /* CPT M AHCI */
320 	{ PCI_VDEVICE(INTEL, 0x1c04), board_ahci }, /* CPT RAID */
321 	{ PCI_VDEVICE(INTEL, 0x1c05), board_ahci_low_power }, /* CPT M RAID */
322 	{ PCI_VDEVICE(INTEL, 0x1c06), board_ahci }, /* CPT RAID */
323 	{ PCI_VDEVICE(INTEL, 0x1c07), board_ahci }, /* CPT RAID */
324 	{ PCI_VDEVICE(INTEL, 0x1d02), board_ahci }, /* PBG AHCI */
325 	{ PCI_VDEVICE(INTEL, 0x1d04), board_ahci }, /* PBG RAID */
326 	{ PCI_VDEVICE(INTEL, 0x1d06), board_ahci }, /* PBG RAID */
327 	{ PCI_VDEVICE(INTEL, 0x2323), board_ahci }, /* DH89xxCC AHCI */
328 	{ PCI_VDEVICE(INTEL, 0x1e02), board_ahci }, /* Panther Point AHCI */
329 	{ PCI_VDEVICE(INTEL, 0x1e03), board_ahci_low_power }, /* Panther M AHCI */
330 	{ PCI_VDEVICE(INTEL, 0x1e04), board_ahci }, /* Panther Point RAID */
331 	{ PCI_VDEVICE(INTEL, 0x1e05), board_ahci }, /* Panther Point RAID */
332 	{ PCI_VDEVICE(INTEL, 0x1e06), board_ahci }, /* Panther Point RAID */
333 	{ PCI_VDEVICE(INTEL, 0x1e07), board_ahci_low_power }, /* Panther M RAID */
334 	{ PCI_VDEVICE(INTEL, 0x1e0e), board_ahci }, /* Panther Point RAID */
335 	{ PCI_VDEVICE(INTEL, 0x8c02), board_ahci }, /* Lynx Point AHCI */
336 	{ PCI_VDEVICE(INTEL, 0x8c03), board_ahci_low_power }, /* Lynx M AHCI */
337 	{ PCI_VDEVICE(INTEL, 0x8c04), board_ahci }, /* Lynx Point RAID */
338 	{ PCI_VDEVICE(INTEL, 0x8c05), board_ahci_low_power }, /* Lynx M RAID */
339 	{ PCI_VDEVICE(INTEL, 0x8c06), board_ahci }, /* Lynx Point RAID */
340 	{ PCI_VDEVICE(INTEL, 0x8c07), board_ahci_low_power }, /* Lynx M RAID */
341 	{ PCI_VDEVICE(INTEL, 0x8c0e), board_ahci }, /* Lynx Point RAID */
342 	{ PCI_VDEVICE(INTEL, 0x8c0f), board_ahci_low_power }, /* Lynx M RAID */
343 	{ PCI_VDEVICE(INTEL, 0x9c02), board_ahci_low_power }, /* Lynx LP AHCI */
344 	{ PCI_VDEVICE(INTEL, 0x9c03), board_ahci_low_power }, /* Lynx LP AHCI */
345 	{ PCI_VDEVICE(INTEL, 0x9c04), board_ahci_low_power }, /* Lynx LP RAID */
346 	{ PCI_VDEVICE(INTEL, 0x9c05), board_ahci_low_power }, /* Lynx LP RAID */
347 	{ PCI_VDEVICE(INTEL, 0x9c06), board_ahci_low_power }, /* Lynx LP RAID */
348 	{ PCI_VDEVICE(INTEL, 0x9c07), board_ahci_low_power }, /* Lynx LP RAID */
349 	{ PCI_VDEVICE(INTEL, 0x9c0e), board_ahci_low_power }, /* Lynx LP RAID */
350 	{ PCI_VDEVICE(INTEL, 0x9c0f), board_ahci_low_power }, /* Lynx LP RAID */
351 	{ PCI_VDEVICE(INTEL, 0x9dd3), board_ahci_low_power }, /* Cannon Lake PCH-LP AHCI */
352 	{ PCI_VDEVICE(INTEL, 0x1f22), board_ahci }, /* Avoton AHCI */
353 	{ PCI_VDEVICE(INTEL, 0x1f23), board_ahci }, /* Avoton AHCI */
354 	{ PCI_VDEVICE(INTEL, 0x1f24), board_ahci }, /* Avoton RAID */
355 	{ PCI_VDEVICE(INTEL, 0x1f25), board_ahci }, /* Avoton RAID */
356 	{ PCI_VDEVICE(INTEL, 0x1f26), board_ahci }, /* Avoton RAID */
357 	{ PCI_VDEVICE(INTEL, 0x1f27), board_ahci }, /* Avoton RAID */
358 	{ PCI_VDEVICE(INTEL, 0x1f2e), board_ahci }, /* Avoton RAID */
359 	{ PCI_VDEVICE(INTEL, 0x1f2f), board_ahci }, /* Avoton RAID */
360 	{ PCI_VDEVICE(INTEL, 0x1f32), board_ahci_avn }, /* Avoton AHCI */
361 	{ PCI_VDEVICE(INTEL, 0x1f33), board_ahci_avn }, /* Avoton AHCI */
362 	{ PCI_VDEVICE(INTEL, 0x1f34), board_ahci_avn }, /* Avoton RAID */
363 	{ PCI_VDEVICE(INTEL, 0x1f35), board_ahci_avn }, /* Avoton RAID */
364 	{ PCI_VDEVICE(INTEL, 0x1f36), board_ahci_avn }, /* Avoton RAID */
365 	{ PCI_VDEVICE(INTEL, 0x1f37), board_ahci_avn }, /* Avoton RAID */
366 	{ PCI_VDEVICE(INTEL, 0x1f3e), board_ahci_avn }, /* Avoton RAID */
367 	{ PCI_VDEVICE(INTEL, 0x1f3f), board_ahci_avn }, /* Avoton RAID */
368 	{ PCI_VDEVICE(INTEL, 0x2823), board_ahci }, /* Wellsburg/Lewisburg AHCI*/
369 	{ PCI_VDEVICE(INTEL, 0x2826), board_ahci }, /* *burg SATA0 'RAID' */
370 	{ PCI_VDEVICE(INTEL, 0x2827), board_ahci }, /* *burg SATA1 'RAID' */
371 	{ PCI_VDEVICE(INTEL, 0x282f), board_ahci }, /* *burg SATA2 'RAID' */
372 	{ PCI_VDEVICE(INTEL, 0x43d4), board_ahci }, /* Rocket Lake PCH-H RAID */
373 	{ PCI_VDEVICE(INTEL, 0x43d5), board_ahci }, /* Rocket Lake PCH-H RAID */
374 	{ PCI_VDEVICE(INTEL, 0x43d6), board_ahci }, /* Rocket Lake PCH-H RAID */
375 	{ PCI_VDEVICE(INTEL, 0x43d7), board_ahci }, /* Rocket Lake PCH-H RAID */
376 	{ PCI_VDEVICE(INTEL, 0x8d02), board_ahci }, /* Wellsburg AHCI */
377 	{ PCI_VDEVICE(INTEL, 0x8d04), board_ahci }, /* Wellsburg RAID */
378 	{ PCI_VDEVICE(INTEL, 0x8d06), board_ahci }, /* Wellsburg RAID */
379 	{ PCI_VDEVICE(INTEL, 0x8d0e), board_ahci }, /* Wellsburg RAID */
380 	{ PCI_VDEVICE(INTEL, 0x8d62), board_ahci }, /* Wellsburg AHCI */
381 	{ PCI_VDEVICE(INTEL, 0x8d64), board_ahci }, /* Wellsburg RAID */
382 	{ PCI_VDEVICE(INTEL, 0x8d66), board_ahci }, /* Wellsburg RAID */
383 	{ PCI_VDEVICE(INTEL, 0x8d6e), board_ahci }, /* Wellsburg RAID */
384 	{ PCI_VDEVICE(INTEL, 0x23a3), board_ahci }, /* Coleto Creek AHCI */
385 	{ PCI_VDEVICE(INTEL, 0x9c83), board_ahci_low_power }, /* Wildcat LP AHCI */
386 	{ PCI_VDEVICE(INTEL, 0x9c85), board_ahci_low_power }, /* Wildcat LP RAID */
387 	{ PCI_VDEVICE(INTEL, 0x9c87), board_ahci_low_power }, /* Wildcat LP RAID */
388 	{ PCI_VDEVICE(INTEL, 0x9c8f), board_ahci_low_power }, /* Wildcat LP RAID */
389 	{ PCI_VDEVICE(INTEL, 0x8c82), board_ahci }, /* 9 Series AHCI */
390 	{ PCI_VDEVICE(INTEL, 0x8c83), board_ahci_low_power }, /* 9 Series M AHCI */
391 	{ PCI_VDEVICE(INTEL, 0x8c84), board_ahci }, /* 9 Series RAID */
392 	{ PCI_VDEVICE(INTEL, 0x8c85), board_ahci_low_power }, /* 9 Series M RAID */
393 	{ PCI_VDEVICE(INTEL, 0x8c86), board_ahci }, /* 9 Series RAID */
394 	{ PCI_VDEVICE(INTEL, 0x8c87), board_ahci_low_power }, /* 9 Series M RAID */
395 	{ PCI_VDEVICE(INTEL, 0x8c8e), board_ahci }, /* 9 Series RAID */
396 	{ PCI_VDEVICE(INTEL, 0x8c8f), board_ahci_low_power }, /* 9 Series M RAID */
397 	{ PCI_VDEVICE(INTEL, 0x9d03), board_ahci_low_power }, /* Sunrise LP AHCI */
398 	{ PCI_VDEVICE(INTEL, 0x9d05), board_ahci_low_power }, /* Sunrise LP RAID */
399 	{ PCI_VDEVICE(INTEL, 0x9d07), board_ahci_low_power }, /* Sunrise LP RAID */
400 	{ PCI_VDEVICE(INTEL, 0xa102), board_ahci }, /* Sunrise Point-H AHCI */
401 	{ PCI_VDEVICE(INTEL, 0xa103), board_ahci_low_power }, /* Sunrise M AHCI */
402 	{ PCI_VDEVICE(INTEL, 0xa105), board_ahci }, /* Sunrise Point-H RAID */
403 	{ PCI_VDEVICE(INTEL, 0xa106), board_ahci }, /* Sunrise Point-H RAID */
404 	{ PCI_VDEVICE(INTEL, 0xa107), board_ahci_low_power }, /* Sunrise M RAID */
405 	{ PCI_VDEVICE(INTEL, 0xa10f), board_ahci }, /* Sunrise Point-H RAID */
406 	{ PCI_VDEVICE(INTEL, 0xa182), board_ahci }, /* Lewisburg AHCI*/
407 	{ PCI_VDEVICE(INTEL, 0xa186), board_ahci }, /* Lewisburg RAID*/
408 	{ PCI_VDEVICE(INTEL, 0xa1d2), board_ahci }, /* Lewisburg RAID*/
409 	{ PCI_VDEVICE(INTEL, 0xa1d6), board_ahci }, /* Lewisburg RAID*/
410 	{ PCI_VDEVICE(INTEL, 0xa202), board_ahci }, /* Lewisburg AHCI*/
411 	{ PCI_VDEVICE(INTEL, 0xa206), board_ahci }, /* Lewisburg RAID*/
412 	{ PCI_VDEVICE(INTEL, 0xa252), board_ahci }, /* Lewisburg RAID*/
413 	{ PCI_VDEVICE(INTEL, 0xa256), board_ahci }, /* Lewisburg RAID*/
414 	{ PCI_VDEVICE(INTEL, 0xa356), board_ahci }, /* Cannon Lake PCH-H RAID */
415 	{ PCI_VDEVICE(INTEL, 0x06d7), board_ahci }, /* Comet Lake-H RAID */
416 	{ PCI_VDEVICE(INTEL, 0xa386), board_ahci }, /* Comet Lake PCH-V RAID */
417 	{ PCI_VDEVICE(INTEL, 0x0f22), board_ahci_low_power }, /* Bay Trail AHCI */
418 	{ PCI_VDEVICE(INTEL, 0x0f23), board_ahci_low_power }, /* Bay Trail AHCI */
419 	{ PCI_VDEVICE(INTEL, 0x22a3), board_ahci_low_power }, /* Cherry Tr. AHCI */
420 	{ PCI_VDEVICE(INTEL, 0x5ae3), board_ahci_low_power }, /* ApolloLake AHCI */
421 	{ PCI_VDEVICE(INTEL, 0x34d3), board_ahci_low_power }, /* Ice Lake LP AHCI */
422 	{ PCI_VDEVICE(INTEL, 0x02d3), board_ahci_low_power }, /* Comet Lake PCH-U AHCI */
423 	{ PCI_VDEVICE(INTEL, 0x02d7), board_ahci_low_power }, /* Comet Lake PCH RAID */
424 	/* Elkhart Lake IDs 0x4b60 & 0x4b62 https://sata-io.org/product/8803 not tested yet */
425 	{ PCI_VDEVICE(INTEL, 0x4b63), board_ahci_low_power }, /* Elkhart Lake AHCI */
426 
427 	/* JMicron 360/1/3/5/6, match class to avoid IDE function */
428 	{ PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
429 	  PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci_ign_iferr },
430 	/* JMicron 362B and 362C have an AHCI function with IDE class code */
431 	{ PCI_VDEVICE(JMICRON, 0x2362), board_ahci_ign_iferr },
432 	{ PCI_VDEVICE(JMICRON, 0x236f), board_ahci_ign_iferr },
433 	/* May need to update quirk_jmicron_async_suspend() for additions */
434 
435 	/* ATI */
436 	{ PCI_VDEVICE(ATI, 0x4380), board_ahci_sb600 }, /* ATI SB600 */
437 	{ PCI_VDEVICE(ATI, 0x4390), board_ahci_sb700 }, /* ATI SB700/800 */
438 	{ PCI_VDEVICE(ATI, 0x4391), board_ahci_sb700 }, /* ATI SB700/800 */
439 	{ PCI_VDEVICE(ATI, 0x4392), board_ahci_sb700 }, /* ATI SB700/800 */
440 	{ PCI_VDEVICE(ATI, 0x4393), board_ahci_sb700 }, /* ATI SB700/800 */
441 	{ PCI_VDEVICE(ATI, 0x4394), board_ahci_sb700 }, /* ATI SB700/800 */
442 	{ PCI_VDEVICE(ATI, 0x4395), board_ahci_sb700 }, /* ATI SB700/800 */
443 
444 	/* Amazon's Annapurna Labs support */
445 	{ PCI_DEVICE(PCI_VENDOR_ID_AMAZON_ANNAPURNA_LABS, 0x0031),
446 		.class = PCI_CLASS_STORAGE_SATA_AHCI,
447 		.class_mask = 0xffffff,
448 		board_ahci_al },
449 	/* AMD */
450 	{ PCI_VDEVICE(AMD, 0x7800), board_ahci }, /* AMD Hudson-2 */
451 	{ PCI_VDEVICE(AMD, 0x7801), board_ahci_no_debounce_delay }, /* AMD Hudson-2 (AHCI mode) */
452 	{ PCI_VDEVICE(AMD, 0x7900), board_ahci }, /* AMD CZ */
453 	{ PCI_VDEVICE(AMD, 0x7901), board_ahci_low_power }, /* AMD Green Sardine */
454 	/* AMD is using RAID class only for ahci controllers */
455 	{ PCI_VENDOR_ID_AMD, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
456 	  PCI_CLASS_STORAGE_RAID << 8, 0xffffff, board_ahci },
457 
458 	/* Dell S140/S150 */
459 	{ PCI_VENDOR_ID_INTEL, PCI_ANY_ID, PCI_SUBVENDOR_ID_DELL, PCI_ANY_ID,
460 	  PCI_CLASS_STORAGE_RAID << 8, 0xffffff, board_ahci },
461 
462 	/* VIA */
463 	{ PCI_VDEVICE(VIA, 0x3349), board_ahci_vt8251 }, /* VIA VT8251 */
464 	{ PCI_VDEVICE(VIA, 0x6287), board_ahci_vt8251 }, /* VIA VT8251 */
465 
466 	/* NVIDIA */
467 	{ PCI_VDEVICE(NVIDIA, 0x044c), board_ahci_mcp65 },	/* MCP65 */
468 	{ PCI_VDEVICE(NVIDIA, 0x044d), board_ahci_mcp65 },	/* MCP65 */
469 	{ PCI_VDEVICE(NVIDIA, 0x044e), board_ahci_mcp65 },	/* MCP65 */
470 	{ PCI_VDEVICE(NVIDIA, 0x044f), board_ahci_mcp65 },	/* MCP65 */
471 	{ PCI_VDEVICE(NVIDIA, 0x045c), board_ahci_mcp65 },	/* MCP65 */
472 	{ PCI_VDEVICE(NVIDIA, 0x045d), board_ahci_mcp65 },	/* MCP65 */
473 	{ PCI_VDEVICE(NVIDIA, 0x045e), board_ahci_mcp65 },	/* MCP65 */
474 	{ PCI_VDEVICE(NVIDIA, 0x045f), board_ahci_mcp65 },	/* MCP65 */
475 	{ PCI_VDEVICE(NVIDIA, 0x0550), board_ahci_mcp67 },	/* MCP67 */
476 	{ PCI_VDEVICE(NVIDIA, 0x0551), board_ahci_mcp67 },	/* MCP67 */
477 	{ PCI_VDEVICE(NVIDIA, 0x0552), board_ahci_mcp67 },	/* MCP67 */
478 	{ PCI_VDEVICE(NVIDIA, 0x0553), board_ahci_mcp67 },	/* MCP67 */
479 	{ PCI_VDEVICE(NVIDIA, 0x0554), board_ahci_mcp67 },	/* MCP67 */
480 	{ PCI_VDEVICE(NVIDIA, 0x0555), board_ahci_mcp67 },	/* MCP67 */
481 	{ PCI_VDEVICE(NVIDIA, 0x0556), board_ahci_mcp67 },	/* MCP67 */
482 	{ PCI_VDEVICE(NVIDIA, 0x0557), board_ahci_mcp67 },	/* MCP67 */
483 	{ PCI_VDEVICE(NVIDIA, 0x0558), board_ahci_mcp67 },	/* MCP67 */
484 	{ PCI_VDEVICE(NVIDIA, 0x0559), board_ahci_mcp67 },	/* MCP67 */
485 	{ PCI_VDEVICE(NVIDIA, 0x055a), board_ahci_mcp67 },	/* MCP67 */
486 	{ PCI_VDEVICE(NVIDIA, 0x055b), board_ahci_mcp67 },	/* MCP67 */
487 	{ PCI_VDEVICE(NVIDIA, 0x0580), board_ahci_mcp_linux },	/* Linux ID */
488 	{ PCI_VDEVICE(NVIDIA, 0x0581), board_ahci_mcp_linux },	/* Linux ID */
489 	{ PCI_VDEVICE(NVIDIA, 0x0582), board_ahci_mcp_linux },	/* Linux ID */
490 	{ PCI_VDEVICE(NVIDIA, 0x0583), board_ahci_mcp_linux },	/* Linux ID */
491 	{ PCI_VDEVICE(NVIDIA, 0x0584), board_ahci_mcp_linux },	/* Linux ID */
492 	{ PCI_VDEVICE(NVIDIA, 0x0585), board_ahci_mcp_linux },	/* Linux ID */
493 	{ PCI_VDEVICE(NVIDIA, 0x0586), board_ahci_mcp_linux },	/* Linux ID */
494 	{ PCI_VDEVICE(NVIDIA, 0x0587), board_ahci_mcp_linux },	/* Linux ID */
495 	{ PCI_VDEVICE(NVIDIA, 0x0588), board_ahci_mcp_linux },	/* Linux ID */
496 	{ PCI_VDEVICE(NVIDIA, 0x0589), board_ahci_mcp_linux },	/* Linux ID */
497 	{ PCI_VDEVICE(NVIDIA, 0x058a), board_ahci_mcp_linux },	/* Linux ID */
498 	{ PCI_VDEVICE(NVIDIA, 0x058b), board_ahci_mcp_linux },	/* Linux ID */
499 	{ PCI_VDEVICE(NVIDIA, 0x058c), board_ahci_mcp_linux },	/* Linux ID */
500 	{ PCI_VDEVICE(NVIDIA, 0x058d), board_ahci_mcp_linux },	/* Linux ID */
501 	{ PCI_VDEVICE(NVIDIA, 0x058e), board_ahci_mcp_linux },	/* Linux ID */
502 	{ PCI_VDEVICE(NVIDIA, 0x058f), board_ahci_mcp_linux },	/* Linux ID */
503 	{ PCI_VDEVICE(NVIDIA, 0x07f0), board_ahci_mcp73 },	/* MCP73 */
504 	{ PCI_VDEVICE(NVIDIA, 0x07f1), board_ahci_mcp73 },	/* MCP73 */
505 	{ PCI_VDEVICE(NVIDIA, 0x07f2), board_ahci_mcp73 },	/* MCP73 */
506 	{ PCI_VDEVICE(NVIDIA, 0x07f3), board_ahci_mcp73 },	/* MCP73 */
507 	{ PCI_VDEVICE(NVIDIA, 0x07f4), board_ahci_mcp73 },	/* MCP73 */
508 	{ PCI_VDEVICE(NVIDIA, 0x07f5), board_ahci_mcp73 },	/* MCP73 */
509 	{ PCI_VDEVICE(NVIDIA, 0x07f6), board_ahci_mcp73 },	/* MCP73 */
510 	{ PCI_VDEVICE(NVIDIA, 0x07f7), board_ahci_mcp73 },	/* MCP73 */
511 	{ PCI_VDEVICE(NVIDIA, 0x07f8), board_ahci_mcp73 },	/* MCP73 */
512 	{ PCI_VDEVICE(NVIDIA, 0x07f9), board_ahci_mcp73 },	/* MCP73 */
513 	{ PCI_VDEVICE(NVIDIA, 0x07fa), board_ahci_mcp73 },	/* MCP73 */
514 	{ PCI_VDEVICE(NVIDIA, 0x07fb), board_ahci_mcp73 },	/* MCP73 */
515 	{ PCI_VDEVICE(NVIDIA, 0x0ad0), board_ahci_mcp77 },	/* MCP77 */
516 	{ PCI_VDEVICE(NVIDIA, 0x0ad1), board_ahci_mcp77 },	/* MCP77 */
517 	{ PCI_VDEVICE(NVIDIA, 0x0ad2), board_ahci_mcp77 },	/* MCP77 */
518 	{ PCI_VDEVICE(NVIDIA, 0x0ad3), board_ahci_mcp77 },	/* MCP77 */
519 	{ PCI_VDEVICE(NVIDIA, 0x0ad4), board_ahci_mcp77 },	/* MCP77 */
520 	{ PCI_VDEVICE(NVIDIA, 0x0ad5), board_ahci_mcp77 },	/* MCP77 */
521 	{ PCI_VDEVICE(NVIDIA, 0x0ad6), board_ahci_mcp77 },	/* MCP77 */
522 	{ PCI_VDEVICE(NVIDIA, 0x0ad7), board_ahci_mcp77 },	/* MCP77 */
523 	{ PCI_VDEVICE(NVIDIA, 0x0ad8), board_ahci_mcp77 },	/* MCP77 */
524 	{ PCI_VDEVICE(NVIDIA, 0x0ad9), board_ahci_mcp77 },	/* MCP77 */
525 	{ PCI_VDEVICE(NVIDIA, 0x0ada), board_ahci_mcp77 },	/* MCP77 */
526 	{ PCI_VDEVICE(NVIDIA, 0x0adb), board_ahci_mcp77 },	/* MCP77 */
527 	{ PCI_VDEVICE(NVIDIA, 0x0ab4), board_ahci_mcp79 },	/* MCP79 */
528 	{ PCI_VDEVICE(NVIDIA, 0x0ab5), board_ahci_mcp79 },	/* MCP79 */
529 	{ PCI_VDEVICE(NVIDIA, 0x0ab6), board_ahci_mcp79 },	/* MCP79 */
530 	{ PCI_VDEVICE(NVIDIA, 0x0ab7), board_ahci_mcp79 },	/* MCP79 */
531 	{ PCI_VDEVICE(NVIDIA, 0x0ab8), board_ahci_mcp79 },	/* MCP79 */
532 	{ PCI_VDEVICE(NVIDIA, 0x0ab9), board_ahci_mcp79 },	/* MCP79 */
533 	{ PCI_VDEVICE(NVIDIA, 0x0aba), board_ahci_mcp79 },	/* MCP79 */
534 	{ PCI_VDEVICE(NVIDIA, 0x0abb), board_ahci_mcp79 },	/* MCP79 */
535 	{ PCI_VDEVICE(NVIDIA, 0x0abc), board_ahci_mcp79 },	/* MCP79 */
536 	{ PCI_VDEVICE(NVIDIA, 0x0abd), board_ahci_mcp79 },	/* MCP79 */
537 	{ PCI_VDEVICE(NVIDIA, 0x0abe), board_ahci_mcp79 },	/* MCP79 */
538 	{ PCI_VDEVICE(NVIDIA, 0x0abf), board_ahci_mcp79 },	/* MCP79 */
539 	{ PCI_VDEVICE(NVIDIA, 0x0d84), board_ahci_mcp89 },	/* MCP89 */
540 	{ PCI_VDEVICE(NVIDIA, 0x0d85), board_ahci_mcp89 },	/* MCP89 */
541 	{ PCI_VDEVICE(NVIDIA, 0x0d86), board_ahci_mcp89 },	/* MCP89 */
542 	{ PCI_VDEVICE(NVIDIA, 0x0d87), board_ahci_mcp89 },	/* MCP89 */
543 	{ PCI_VDEVICE(NVIDIA, 0x0d88), board_ahci_mcp89 },	/* MCP89 */
544 	{ PCI_VDEVICE(NVIDIA, 0x0d89), board_ahci_mcp89 },	/* MCP89 */
545 	{ PCI_VDEVICE(NVIDIA, 0x0d8a), board_ahci_mcp89 },	/* MCP89 */
546 	{ PCI_VDEVICE(NVIDIA, 0x0d8b), board_ahci_mcp89 },	/* MCP89 */
547 	{ PCI_VDEVICE(NVIDIA, 0x0d8c), board_ahci_mcp89 },	/* MCP89 */
548 	{ PCI_VDEVICE(NVIDIA, 0x0d8d), board_ahci_mcp89 },	/* MCP89 */
549 	{ PCI_VDEVICE(NVIDIA, 0x0d8e), board_ahci_mcp89 },	/* MCP89 */
550 	{ PCI_VDEVICE(NVIDIA, 0x0d8f), board_ahci_mcp89 },	/* MCP89 */
551 
552 	/* SiS */
553 	{ PCI_VDEVICE(SI, 0x1184), board_ahci },		/* SiS 966 */
554 	{ PCI_VDEVICE(SI, 0x1185), board_ahci },		/* SiS 968 */
555 	{ PCI_VDEVICE(SI, 0x0186), board_ahci },		/* SiS 968 */
556 
557 	/* ST Microelectronics */
558 	{ PCI_VDEVICE(STMICRO, 0xCC06), board_ahci },		/* ST ConneXt */
559 
560 	/* Marvell */
561 	{ PCI_VDEVICE(MARVELL, 0x6145), board_ahci_mv },	/* 6145 */
562 	{ PCI_VDEVICE(MARVELL, 0x6121), board_ahci_mv },	/* 6121 */
563 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9123),
564 	  .class = PCI_CLASS_STORAGE_SATA_AHCI,
565 	  .class_mask = 0xffffff,
566 	  .driver_data = board_ahci_yes_fbs },			/* 88se9128 */
567 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9125),
568 	  .driver_data = board_ahci_yes_fbs },			/* 88se9125 */
569 	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_MARVELL_EXT, 0x9178,
570 			 PCI_VENDOR_ID_MARVELL_EXT, 0x9170),
571 	  .driver_data = board_ahci_yes_fbs },			/* 88se9170 */
572 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x917a),
573 	  .driver_data = board_ahci_yes_fbs },			/* 88se9172 */
574 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9172),
575 	  .driver_data = board_ahci_yes_fbs },			/* 88se9182 */
576 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9182),
577 	  .driver_data = board_ahci_yes_fbs },			/* 88se9172 */
578 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9192),
579 	  .driver_data = board_ahci_yes_fbs },			/* 88se9172 on some Gigabyte */
580 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x91a0),
581 	  .driver_data = board_ahci_yes_fbs },
582 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x91a2), 	/* 88se91a2 */
583 	  .driver_data = board_ahci_yes_fbs },
584 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x91a3),
585 	  .driver_data = board_ahci_yes_fbs },
586 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9230),
587 	  .driver_data = board_ahci_yes_fbs },
588 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9235),
589 	  .driver_data = board_ahci_no_debounce_delay },
590 	{ PCI_DEVICE(PCI_VENDOR_ID_TTI, 0x0642), /* highpoint rocketraid 642L */
591 	  .driver_data = board_ahci_yes_fbs },
592 	{ PCI_DEVICE(PCI_VENDOR_ID_TTI, 0x0645), /* highpoint rocketraid 644L */
593 	  .driver_data = board_ahci_yes_fbs },
594 
595 	/* Promise */
596 	{ PCI_VDEVICE(PROMISE, 0x3f20), board_ahci },	/* PDC42819 */
597 	{ PCI_VDEVICE(PROMISE, 0x3781), board_ahci },   /* FastTrak TX8660 ahci-mode */
598 
599 	/* Asmedia */
600 	{ PCI_VDEVICE(ASMEDIA, 0x0601), board_ahci },	/* ASM1060 */
601 	{ PCI_VDEVICE(ASMEDIA, 0x0602), board_ahci },	/* ASM1060 */
602 	{ PCI_VDEVICE(ASMEDIA, 0x0611), board_ahci },	/* ASM1061 */
603 	{ PCI_VDEVICE(ASMEDIA, 0x0612), board_ahci },	/* ASM1062 */
604 	{ PCI_VDEVICE(ASMEDIA, 0x0621), board_ahci },   /* ASM1061R */
605 	{ PCI_VDEVICE(ASMEDIA, 0x0622), board_ahci },   /* ASM1062R */
606 	{ PCI_VDEVICE(ASMEDIA, 0x0624), board_ahci },   /* ASM1062+JMB575 */
607 
608 	/*
609 	 * Samsung SSDs found on some macbooks.  NCQ times out if MSI is
610 	 * enabled.  https://bugzilla.kernel.org/show_bug.cgi?id=60731
611 	 */
612 	{ PCI_VDEVICE(SAMSUNG, 0x1600), board_ahci_nomsi },
613 	{ PCI_VDEVICE(SAMSUNG, 0xa800), board_ahci_nomsi },
614 
615 	/* Enmotus */
616 	{ PCI_DEVICE(0x1c44, 0x8000), board_ahci },
617 
618 	/* Loongson */
619 	{ PCI_VDEVICE(LOONGSON, 0x7a08), board_ahci },
620 
621 	/* Generic, PCI class code for AHCI */
622 	{ PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
623 	  PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci },
624 
625 	{ }	/* terminate list */
626 };
627 
628 static const struct dev_pm_ops ahci_pci_pm_ops = {
629 	SET_SYSTEM_SLEEP_PM_OPS(ahci_pci_device_suspend, ahci_pci_device_resume)
630 	SET_RUNTIME_PM_OPS(ahci_pci_device_runtime_suspend,
631 			   ahci_pci_device_runtime_resume, NULL)
632 };
633 
634 static struct pci_driver ahci_pci_driver = {
635 	.name			= DRV_NAME,
636 	.id_table		= ahci_pci_tbl,
637 	.probe			= ahci_init_one,
638 	.remove			= ahci_remove_one,
639 	.shutdown		= ahci_shutdown_one,
640 	.driver = {
641 		.pm		= &ahci_pci_pm_ops,
642 	},
643 };
644 
645 #if IS_ENABLED(CONFIG_PATA_MARVELL)
646 static int marvell_enable;
647 #else
648 static int marvell_enable = 1;
649 #endif
650 module_param(marvell_enable, int, 0644);
651 MODULE_PARM_DESC(marvell_enable, "Marvell SATA via AHCI (1 = enabled)");
652 
653 static int mobile_lpm_policy = -1;
654 module_param(mobile_lpm_policy, int, 0644);
655 MODULE_PARM_DESC(mobile_lpm_policy, "Default LPM policy for mobile chipsets");
656 
657 static void ahci_pci_save_initial_config(struct pci_dev *pdev,
658 					 struct ahci_host_priv *hpriv)
659 {
660 	if (pdev->vendor == PCI_VENDOR_ID_JMICRON && pdev->device == 0x2361) {
661 		dev_info(&pdev->dev, "JMB361 has only one port\n");
662 		hpriv->saved_port_map = 1;
663 	}
664 
665 	/*
666 	 * Temporary Marvell 6145 hack: PATA port presence
667 	 * is asserted through the standard AHCI port
668 	 * presence register, as bit 4 (counting from 0)
669 	 */
670 	if (hpriv->flags & AHCI_HFLAG_MV_PATA) {
671 		if (pdev->device == 0x6121)
672 			hpriv->mask_port_map = 0x3;
673 		else
674 			hpriv->mask_port_map = 0xf;
675 		dev_info(&pdev->dev,
676 			  "Disabling your PATA port. Use the boot option 'ahci.marvell_enable=0' to avoid this.\n");
677 	}
678 
679 	ahci_save_initial_config(&pdev->dev, hpriv);
680 }
681 
682 static int ahci_pci_reset_controller(struct ata_host *host)
683 {
684 	struct pci_dev *pdev = to_pci_dev(host->dev);
685 	struct ahci_host_priv *hpriv = host->private_data;
686 	int rc;
687 
688 	rc = ahci_reset_controller(host);
689 	if (rc)
690 		return rc;
691 
692 	/*
693 	 * If platform firmware failed to enable ports, try to enable
694 	 * them here.
695 	 */
696 	ahci_intel_pcs_quirk(pdev, hpriv);
697 
698 	return 0;
699 }
700 
701 static void ahci_pci_init_controller(struct ata_host *host)
702 {
703 	struct ahci_host_priv *hpriv = host->private_data;
704 	struct pci_dev *pdev = to_pci_dev(host->dev);
705 	void __iomem *port_mmio;
706 	u32 tmp;
707 	int mv;
708 
709 	if (hpriv->flags & AHCI_HFLAG_MV_PATA) {
710 		if (pdev->device == 0x6121)
711 			mv = 2;
712 		else
713 			mv = 4;
714 		port_mmio = __ahci_port_base(hpriv, mv);
715 
716 		writel(0, port_mmio + PORT_IRQ_MASK);
717 
718 		/* clear port IRQ */
719 		tmp = readl(port_mmio + PORT_IRQ_STAT);
720 		dev_dbg(&pdev->dev, "PORT_IRQ_STAT 0x%x\n", tmp);
721 		if (tmp)
722 			writel(tmp, port_mmio + PORT_IRQ_STAT);
723 	}
724 
725 	ahci_init_controller(host);
726 }
727 
728 static int ahci_vt8251_hardreset(struct ata_link *link, unsigned int *class,
729 				 unsigned long deadline)
730 {
731 	struct ata_port *ap = link->ap;
732 	struct ahci_host_priv *hpriv = ap->host->private_data;
733 	bool online;
734 	int rc;
735 
736 	hpriv->stop_engine(ap);
737 
738 	rc = sata_link_hardreset(link, sata_ehc_deb_timing(&link->eh_context),
739 				 deadline, &online, NULL);
740 
741 	hpriv->start_engine(ap);
742 
743 	/* vt8251 doesn't clear BSY on signature FIS reception,
744 	 * request follow-up softreset.
745 	 */
746 	return online ? -EAGAIN : rc;
747 }
748 
749 static int ahci_p5wdh_hardreset(struct ata_link *link, unsigned int *class,
750 				unsigned long deadline)
751 {
752 	struct ata_port *ap = link->ap;
753 	struct ahci_port_priv *pp = ap->private_data;
754 	struct ahci_host_priv *hpriv = ap->host->private_data;
755 	u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
756 	struct ata_taskfile tf;
757 	bool online;
758 	int rc;
759 
760 	hpriv->stop_engine(ap);
761 
762 	/* clear D2H reception area to properly wait for D2H FIS */
763 	ata_tf_init(link->device, &tf);
764 	tf.status = ATA_BUSY;
765 	ata_tf_to_fis(&tf, 0, 0, d2h_fis);
766 
767 	rc = sata_link_hardreset(link, sata_ehc_deb_timing(&link->eh_context),
768 				 deadline, &online, NULL);
769 
770 	hpriv->start_engine(ap);
771 
772 	/* The pseudo configuration device on SIMG4726 attached to
773 	 * ASUS P5W-DH Deluxe doesn't send signature FIS after
774 	 * hardreset if no device is attached to the first downstream
775 	 * port && the pseudo device locks up on SRST w/ PMP==0.  To
776 	 * work around this, wait for !BSY only briefly.  If BSY isn't
777 	 * cleared, perform CLO and proceed to IDENTIFY (achieved by
778 	 * ATA_LFLAG_NO_SRST and ATA_LFLAG_ASSUME_ATA).
779 	 *
780 	 * Wait for two seconds.  Devices attached to downstream port
781 	 * which can't process the following IDENTIFY after this will
782 	 * have to be reset again.  For most cases, this should
783 	 * suffice while making probing snappish enough.
784 	 */
785 	if (online) {
786 		rc = ata_wait_after_reset(link, jiffies + 2 * HZ,
787 					  ahci_check_ready);
788 		if (rc)
789 			ahci_kick_engine(ap);
790 	}
791 	return rc;
792 }
793 
794 /*
795  * ahci_avn_hardreset - attempt more aggressive recovery of Avoton ports.
796  *
797  * It has been observed with some SSDs that the timing of events in the
798  * link synchronization phase can leave the port in a state that can not
799  * be recovered by a SATA-hard-reset alone.  The failing signature is
800  * SStatus.DET stuck at 1 ("Device presence detected but Phy
801  * communication not established").  It was found that unloading and
802  * reloading the driver when this problem occurs allows the drive
803  * connection to be recovered (DET advanced to 0x3).  The critical
804  * component of reloading the driver is that the port state machines are
805  * reset by bouncing "port enable" in the AHCI PCS configuration
806  * register.  So, reproduce that effect by bouncing a port whenever we
807  * see DET==1 after a reset.
808  */
809 static int ahci_avn_hardreset(struct ata_link *link, unsigned int *class,
810 			      unsigned long deadline)
811 {
812 	const unsigned int *timing = sata_ehc_deb_timing(&link->eh_context);
813 	struct ata_port *ap = link->ap;
814 	struct ahci_port_priv *pp = ap->private_data;
815 	struct ahci_host_priv *hpriv = ap->host->private_data;
816 	u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
817 	unsigned long tmo = deadline - jiffies;
818 	struct ata_taskfile tf;
819 	bool online;
820 	int rc, i;
821 
822 	hpriv->stop_engine(ap);
823 
824 	for (i = 0; i < 2; i++) {
825 		u16 val;
826 		u32 sstatus;
827 		int port = ap->port_no;
828 		struct ata_host *host = ap->host;
829 		struct pci_dev *pdev = to_pci_dev(host->dev);
830 
831 		/* clear D2H reception area to properly wait for D2H FIS */
832 		ata_tf_init(link->device, &tf);
833 		tf.status = ATA_BUSY;
834 		ata_tf_to_fis(&tf, 0, 0, d2h_fis);
835 
836 		rc = sata_link_hardreset(link, timing, deadline, &online,
837 				ahci_check_ready);
838 
839 		if (sata_scr_read(link, SCR_STATUS, &sstatus) != 0 ||
840 				(sstatus & 0xf) != 1)
841 			break;
842 
843 		ata_link_info(link,  "avn bounce port%d\n", port);
844 
845 		pci_read_config_word(pdev, 0x92, &val);
846 		val &= ~(1 << port);
847 		pci_write_config_word(pdev, 0x92, val);
848 		ata_msleep(ap, 1000);
849 		val |= 1 << port;
850 		pci_write_config_word(pdev, 0x92, val);
851 		deadline += tmo;
852 	}
853 
854 	hpriv->start_engine(ap);
855 
856 	if (online)
857 		*class = ahci_dev_classify(ap);
858 
859 	return rc;
860 }
861 
862 
863 #ifdef CONFIG_PM
864 static void ahci_pci_disable_interrupts(struct ata_host *host)
865 {
866 	struct ahci_host_priv *hpriv = host->private_data;
867 	void __iomem *mmio = hpriv->mmio;
868 	u32 ctl;
869 
870 	/* AHCI spec rev1.1 section 8.3.3:
871 	 * Software must disable interrupts prior to requesting a
872 	 * transition of the HBA to D3 state.
873 	 */
874 	ctl = readl(mmio + HOST_CTL);
875 	ctl &= ~HOST_IRQ_EN;
876 	writel(ctl, mmio + HOST_CTL);
877 	readl(mmio + HOST_CTL); /* flush */
878 }
879 
880 static int ahci_pci_device_runtime_suspend(struct device *dev)
881 {
882 	struct pci_dev *pdev = to_pci_dev(dev);
883 	struct ata_host *host = pci_get_drvdata(pdev);
884 
885 	ahci_pci_disable_interrupts(host);
886 	return 0;
887 }
888 
889 static int ahci_pci_device_runtime_resume(struct device *dev)
890 {
891 	struct pci_dev *pdev = to_pci_dev(dev);
892 	struct ata_host *host = pci_get_drvdata(pdev);
893 	int rc;
894 
895 	rc = ahci_pci_reset_controller(host);
896 	if (rc)
897 		return rc;
898 	ahci_pci_init_controller(host);
899 	return 0;
900 }
901 
902 #ifdef CONFIG_PM_SLEEP
903 static int ahci_pci_device_suspend(struct device *dev)
904 {
905 	struct pci_dev *pdev = to_pci_dev(dev);
906 	struct ata_host *host = pci_get_drvdata(pdev);
907 	struct ahci_host_priv *hpriv = host->private_data;
908 
909 	if (hpriv->flags & AHCI_HFLAG_NO_SUSPEND) {
910 		dev_err(&pdev->dev,
911 			"BIOS update required for suspend/resume\n");
912 		return -EIO;
913 	}
914 
915 	ahci_pci_disable_interrupts(host);
916 	ata_host_suspend(host, PMSG_SUSPEND);
917 	return 0;
918 }
919 
920 static int ahci_pci_device_resume(struct device *dev)
921 {
922 	struct pci_dev *pdev = to_pci_dev(dev);
923 	struct ata_host *host = pci_get_drvdata(pdev);
924 	int rc;
925 
926 	/* Apple BIOS helpfully mangles the registers on resume */
927 	if (is_mcp89_apple(pdev))
928 		ahci_mcp89_apple_enable(pdev);
929 
930 	if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
931 		rc = ahci_pci_reset_controller(host);
932 		if (rc)
933 			return rc;
934 
935 		ahci_pci_init_controller(host);
936 	}
937 
938 	ata_host_resume(host);
939 
940 	return 0;
941 }
942 #endif
943 
944 #endif /* CONFIG_PM */
945 
946 static int ahci_configure_dma_masks(struct pci_dev *pdev, int using_dac)
947 {
948 	const int dma_bits = using_dac ? 64 : 32;
949 	int rc;
950 
951 	/*
952 	 * If the device fixup already set the dma_mask to some non-standard
953 	 * value, don't extend it here. This happens on STA2X11, for example.
954 	 *
955 	 * XXX: manipulating the DMA mask from platform code is completely
956 	 * bogus, platform code should use dev->bus_dma_limit instead..
957 	 */
958 	if (pdev->dma_mask && pdev->dma_mask < DMA_BIT_MASK(32))
959 		return 0;
960 
961 	rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(dma_bits));
962 	if (rc)
963 		dev_err(&pdev->dev, "DMA enable failed\n");
964 	return rc;
965 }
966 
967 static void ahci_pci_print_info(struct ata_host *host)
968 {
969 	struct pci_dev *pdev = to_pci_dev(host->dev);
970 	u16 cc;
971 	const char *scc_s;
972 
973 	pci_read_config_word(pdev, 0x0a, &cc);
974 	if (cc == PCI_CLASS_STORAGE_IDE)
975 		scc_s = "IDE";
976 	else if (cc == PCI_CLASS_STORAGE_SATA)
977 		scc_s = "SATA";
978 	else if (cc == PCI_CLASS_STORAGE_RAID)
979 		scc_s = "RAID";
980 	else
981 		scc_s = "unknown";
982 
983 	ahci_print_info(host, scc_s);
984 }
985 
986 /* On ASUS P5W DH Deluxe, the second port of PCI device 00:1f.2 is
987  * hardwired to on-board SIMG 4726.  The chipset is ICH8 and doesn't
988  * support PMP and the 4726 either directly exports the device
989  * attached to the first downstream port or acts as a hardware storage
990  * controller and emulate a single ATA device (can be RAID 0/1 or some
991  * other configuration).
992  *
993  * When there's no device attached to the first downstream port of the
994  * 4726, "Config Disk" appears, which is a pseudo ATA device to
995  * configure the 4726.  However, ATA emulation of the device is very
996  * lame.  It doesn't send signature D2H Reg FIS after the initial
997  * hardreset, pukes on SRST w/ PMP==0 and has bunch of other issues.
998  *
999  * The following function works around the problem by always using
1000  * hardreset on the port and not depending on receiving signature FIS
1001  * afterward.  If signature FIS isn't received soon, ATA class is
1002  * assumed without follow-up softreset.
1003  */
1004 static void ahci_p5wdh_workaround(struct ata_host *host)
1005 {
1006 	static const struct dmi_system_id sysids[] = {
1007 		{
1008 			.ident = "P5W DH Deluxe",
1009 			.matches = {
1010 				DMI_MATCH(DMI_SYS_VENDOR,
1011 					  "ASUSTEK COMPUTER INC"),
1012 				DMI_MATCH(DMI_PRODUCT_NAME, "P5W DH Deluxe"),
1013 			},
1014 		},
1015 		{ }
1016 	};
1017 	struct pci_dev *pdev = to_pci_dev(host->dev);
1018 
1019 	if (pdev->bus->number == 0 && pdev->devfn == PCI_DEVFN(0x1f, 2) &&
1020 	    dmi_check_system(sysids)) {
1021 		struct ata_port *ap = host->ports[1];
1022 
1023 		dev_info(&pdev->dev,
1024 			 "enabling ASUS P5W DH Deluxe on-board SIMG4726 workaround\n");
1025 
1026 		ap->ops = &ahci_p5wdh_ops;
1027 		ap->link.flags |= ATA_LFLAG_NO_SRST | ATA_LFLAG_ASSUME_ATA;
1028 	}
1029 }
1030 
1031 /*
1032  * Macbook7,1 firmware forcibly disables MCP89 AHCI and changes PCI ID when
1033  * booting in BIOS compatibility mode.  We restore the registers but not ID.
1034  */
1035 static void ahci_mcp89_apple_enable(struct pci_dev *pdev)
1036 {
1037 	u32 val;
1038 
1039 	printk(KERN_INFO "ahci: enabling MCP89 AHCI mode\n");
1040 
1041 	pci_read_config_dword(pdev, 0xf8, &val);
1042 	val |= 1 << 0x1b;
1043 	/* the following changes the device ID, but appears not to affect function */
1044 	/* val = (val & ~0xf0000000) | 0x80000000; */
1045 	pci_write_config_dword(pdev, 0xf8, val);
1046 
1047 	pci_read_config_dword(pdev, 0x54c, &val);
1048 	val |= 1 << 0xc;
1049 	pci_write_config_dword(pdev, 0x54c, val);
1050 
1051 	pci_read_config_dword(pdev, 0x4a4, &val);
1052 	val &= 0xff;
1053 	val |= 0x01060100;
1054 	pci_write_config_dword(pdev, 0x4a4, val);
1055 
1056 	pci_read_config_dword(pdev, 0x54c, &val);
1057 	val &= ~(1 << 0xc);
1058 	pci_write_config_dword(pdev, 0x54c, val);
1059 
1060 	pci_read_config_dword(pdev, 0xf8, &val);
1061 	val &= ~(1 << 0x1b);
1062 	pci_write_config_dword(pdev, 0xf8, val);
1063 }
1064 
1065 static bool is_mcp89_apple(struct pci_dev *pdev)
1066 {
1067 	return pdev->vendor == PCI_VENDOR_ID_NVIDIA &&
1068 		pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP89_SATA &&
1069 		pdev->subsystem_vendor == PCI_VENDOR_ID_APPLE &&
1070 		pdev->subsystem_device == 0xcb89;
1071 }
1072 
1073 /* only some SB600 ahci controllers can do 64bit DMA */
1074 static bool ahci_sb600_enable_64bit(struct pci_dev *pdev)
1075 {
1076 	static const struct dmi_system_id sysids[] = {
1077 		/*
1078 		 * The oldest version known to be broken is 0901 and
1079 		 * working is 1501 which was released on 2007-10-26.
1080 		 * Enable 64bit DMA on 1501 and anything newer.
1081 		 *
1082 		 * Please read bko#9412 for more info.
1083 		 */
1084 		{
1085 			.ident = "ASUS M2A-VM",
1086 			.matches = {
1087 				DMI_MATCH(DMI_BOARD_VENDOR,
1088 					  "ASUSTeK Computer INC."),
1089 				DMI_MATCH(DMI_BOARD_NAME, "M2A-VM"),
1090 			},
1091 			.driver_data = "20071026",	/* yyyymmdd */
1092 		},
1093 		/*
1094 		 * All BIOS versions for the MSI K9A2 Platinum (MS-7376)
1095 		 * support 64bit DMA.
1096 		 *
1097 		 * BIOS versions earlier than 1.5 had the Manufacturer DMI
1098 		 * fields as "MICRO-STAR INTERANTIONAL CO.,LTD".
1099 		 * This spelling mistake was fixed in BIOS version 1.5, so
1100 		 * 1.5 and later have the Manufacturer as
1101 		 * "MICRO-STAR INTERNATIONAL CO.,LTD".
1102 		 * So try to match on DMI_BOARD_VENDOR of "MICRO-STAR INTER".
1103 		 *
1104 		 * BIOS versions earlier than 1.9 had a Board Product Name
1105 		 * DMI field of "MS-7376". This was changed to be
1106 		 * "K9A2 Platinum (MS-7376)" in version 1.9, but we can still
1107 		 * match on DMI_BOARD_NAME of "MS-7376".
1108 		 */
1109 		{
1110 			.ident = "MSI K9A2 Platinum",
1111 			.matches = {
1112 				DMI_MATCH(DMI_BOARD_VENDOR,
1113 					  "MICRO-STAR INTER"),
1114 				DMI_MATCH(DMI_BOARD_NAME, "MS-7376"),
1115 			},
1116 		},
1117 		/*
1118 		 * All BIOS versions for the MSI K9AGM2 (MS-7327) support
1119 		 * 64bit DMA.
1120 		 *
1121 		 * This board also had the typo mentioned above in the
1122 		 * Manufacturer DMI field (fixed in BIOS version 1.5), so
1123 		 * match on DMI_BOARD_VENDOR of "MICRO-STAR INTER" again.
1124 		 */
1125 		{
1126 			.ident = "MSI K9AGM2",
1127 			.matches = {
1128 				DMI_MATCH(DMI_BOARD_VENDOR,
1129 					  "MICRO-STAR INTER"),
1130 				DMI_MATCH(DMI_BOARD_NAME, "MS-7327"),
1131 			},
1132 		},
1133 		/*
1134 		 * All BIOS versions for the Asus M3A support 64bit DMA.
1135 		 * (all release versions from 0301 to 1206 were tested)
1136 		 */
1137 		{
1138 			.ident = "ASUS M3A",
1139 			.matches = {
1140 				DMI_MATCH(DMI_BOARD_VENDOR,
1141 					  "ASUSTeK Computer INC."),
1142 				DMI_MATCH(DMI_BOARD_NAME, "M3A"),
1143 			},
1144 		},
1145 		{ }
1146 	};
1147 	const struct dmi_system_id *match;
1148 	int year, month, date;
1149 	char buf[9];
1150 
1151 	match = dmi_first_match(sysids);
1152 	if (pdev->bus->number != 0 || pdev->devfn != PCI_DEVFN(0x12, 0) ||
1153 	    !match)
1154 		return false;
1155 
1156 	if (!match->driver_data)
1157 		goto enable_64bit;
1158 
1159 	dmi_get_date(DMI_BIOS_DATE, &year, &month, &date);
1160 	snprintf(buf, sizeof(buf), "%04d%02d%02d", year, month, date);
1161 
1162 	if (strcmp(buf, match->driver_data) >= 0)
1163 		goto enable_64bit;
1164 	else {
1165 		dev_warn(&pdev->dev,
1166 			 "%s: BIOS too old, forcing 32bit DMA, update BIOS\n",
1167 			 match->ident);
1168 		return false;
1169 	}
1170 
1171 enable_64bit:
1172 	dev_warn(&pdev->dev, "%s: enabling 64bit DMA\n", match->ident);
1173 	return true;
1174 }
1175 
1176 static bool ahci_broken_system_poweroff(struct pci_dev *pdev)
1177 {
1178 	static const struct dmi_system_id broken_systems[] = {
1179 		{
1180 			.ident = "HP Compaq nx6310",
1181 			.matches = {
1182 				DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1183 				DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6310"),
1184 			},
1185 			/* PCI slot number of the controller */
1186 			.driver_data = (void *)0x1FUL,
1187 		},
1188 		{
1189 			.ident = "HP Compaq 6720s",
1190 			.matches = {
1191 				DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1192 				DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6720s"),
1193 			},
1194 			/* PCI slot number of the controller */
1195 			.driver_data = (void *)0x1FUL,
1196 		},
1197 
1198 		{ }	/* terminate list */
1199 	};
1200 	const struct dmi_system_id *dmi = dmi_first_match(broken_systems);
1201 
1202 	if (dmi) {
1203 		unsigned long slot = (unsigned long)dmi->driver_data;
1204 		/* apply the quirk only to on-board controllers */
1205 		return slot == PCI_SLOT(pdev->devfn);
1206 	}
1207 
1208 	return false;
1209 }
1210 
1211 static bool ahci_broken_suspend(struct pci_dev *pdev)
1212 {
1213 	static const struct dmi_system_id sysids[] = {
1214 		/*
1215 		 * On HP dv[4-6] and HDX18 with earlier BIOSen, link
1216 		 * to the harddisk doesn't become online after
1217 		 * resuming from STR.  Warn and fail suspend.
1218 		 *
1219 		 * http://bugzilla.kernel.org/show_bug.cgi?id=12276
1220 		 *
1221 		 * Use dates instead of versions to match as HP is
1222 		 * apparently recycling both product and version
1223 		 * strings.
1224 		 *
1225 		 * http://bugzilla.kernel.org/show_bug.cgi?id=15462
1226 		 */
1227 		{
1228 			.ident = "dv4",
1229 			.matches = {
1230 				DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1231 				DMI_MATCH(DMI_PRODUCT_NAME,
1232 					  "HP Pavilion dv4 Notebook PC"),
1233 			},
1234 			.driver_data = "20090105",	/* F.30 */
1235 		},
1236 		{
1237 			.ident = "dv5",
1238 			.matches = {
1239 				DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1240 				DMI_MATCH(DMI_PRODUCT_NAME,
1241 					  "HP Pavilion dv5 Notebook PC"),
1242 			},
1243 			.driver_data = "20090506",	/* F.16 */
1244 		},
1245 		{
1246 			.ident = "dv6",
1247 			.matches = {
1248 				DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1249 				DMI_MATCH(DMI_PRODUCT_NAME,
1250 					  "HP Pavilion dv6 Notebook PC"),
1251 			},
1252 			.driver_data = "20090423",	/* F.21 */
1253 		},
1254 		{
1255 			.ident = "HDX18",
1256 			.matches = {
1257 				DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1258 				DMI_MATCH(DMI_PRODUCT_NAME,
1259 					  "HP HDX18 Notebook PC"),
1260 			},
1261 			.driver_data = "20090430",	/* F.23 */
1262 		},
1263 		/*
1264 		 * Acer eMachines G725 has the same problem.  BIOS
1265 		 * V1.03 is known to be broken.  V3.04 is known to
1266 		 * work.  Between, there are V1.06, V2.06 and V3.03
1267 		 * that we don't have much idea about.  For now,
1268 		 * blacklist anything older than V3.04.
1269 		 *
1270 		 * http://bugzilla.kernel.org/show_bug.cgi?id=15104
1271 		 */
1272 		{
1273 			.ident = "G725",
1274 			.matches = {
1275 				DMI_MATCH(DMI_SYS_VENDOR, "eMachines"),
1276 				DMI_MATCH(DMI_PRODUCT_NAME, "eMachines G725"),
1277 			},
1278 			.driver_data = "20091216",	/* V3.04 */
1279 		},
1280 		{ }	/* terminate list */
1281 	};
1282 	const struct dmi_system_id *dmi = dmi_first_match(sysids);
1283 	int year, month, date;
1284 	char buf[9];
1285 
1286 	if (!dmi || pdev->bus->number || pdev->devfn != PCI_DEVFN(0x1f, 2))
1287 		return false;
1288 
1289 	dmi_get_date(DMI_BIOS_DATE, &year, &month, &date);
1290 	snprintf(buf, sizeof(buf), "%04d%02d%02d", year, month, date);
1291 
1292 	return strcmp(buf, dmi->driver_data) < 0;
1293 }
1294 
1295 static bool ahci_broken_lpm(struct pci_dev *pdev)
1296 {
1297 	static const struct dmi_system_id sysids[] = {
1298 		/* Various Lenovo 50 series have LPM issues with older BIOSen */
1299 		{
1300 			.matches = {
1301 				DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1302 				DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X250"),
1303 			},
1304 			.driver_data = "20180406", /* 1.31 */
1305 		},
1306 		{
1307 			.matches = {
1308 				DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1309 				DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad L450"),
1310 			},
1311 			.driver_data = "20180420", /* 1.28 */
1312 		},
1313 		{
1314 			.matches = {
1315 				DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1316 				DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T450s"),
1317 			},
1318 			.driver_data = "20180315", /* 1.33 */
1319 		},
1320 		{
1321 			.matches = {
1322 				DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
1323 				DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad W541"),
1324 			},
1325 			/*
1326 			 * Note date based on release notes, 2.35 has been
1327 			 * reported to be good, but I've been unable to get
1328 			 * a hold of the reporter to get the DMI BIOS date.
1329 			 * TODO: fix this.
1330 			 */
1331 			.driver_data = "20180310", /* 2.35 */
1332 		},
1333 		{ }	/* terminate list */
1334 	};
1335 	const struct dmi_system_id *dmi = dmi_first_match(sysids);
1336 	int year, month, date;
1337 	char buf[9];
1338 
1339 	if (!dmi)
1340 		return false;
1341 
1342 	dmi_get_date(DMI_BIOS_DATE, &year, &month, &date);
1343 	snprintf(buf, sizeof(buf), "%04d%02d%02d", year, month, date);
1344 
1345 	return strcmp(buf, dmi->driver_data) < 0;
1346 }
1347 
1348 static bool ahci_broken_online(struct pci_dev *pdev)
1349 {
1350 #define ENCODE_BUSDEVFN(bus, slot, func)			\
1351 	(void *)(unsigned long)(((bus) << 8) | PCI_DEVFN((slot), (func)))
1352 	static const struct dmi_system_id sysids[] = {
1353 		/*
1354 		 * There are several gigabyte boards which use
1355 		 * SIMG5723s configured as hardware RAID.  Certain
1356 		 * 5723 firmware revisions shipped there keep the link
1357 		 * online but fail to answer properly to SRST or
1358 		 * IDENTIFY when no device is attached downstream
1359 		 * causing libata to retry quite a few times leading
1360 		 * to excessive detection delay.
1361 		 *
1362 		 * As these firmwares respond to the second reset try
1363 		 * with invalid device signature, considering unknown
1364 		 * sig as offline works around the problem acceptably.
1365 		 */
1366 		{
1367 			.ident = "EP45-DQ6",
1368 			.matches = {
1369 				DMI_MATCH(DMI_BOARD_VENDOR,
1370 					  "Gigabyte Technology Co., Ltd."),
1371 				DMI_MATCH(DMI_BOARD_NAME, "EP45-DQ6"),
1372 			},
1373 			.driver_data = ENCODE_BUSDEVFN(0x0a, 0x00, 0),
1374 		},
1375 		{
1376 			.ident = "EP45-DS5",
1377 			.matches = {
1378 				DMI_MATCH(DMI_BOARD_VENDOR,
1379 					  "Gigabyte Technology Co., Ltd."),
1380 				DMI_MATCH(DMI_BOARD_NAME, "EP45-DS5"),
1381 			},
1382 			.driver_data = ENCODE_BUSDEVFN(0x03, 0x00, 0),
1383 		},
1384 		{ }	/* terminate list */
1385 	};
1386 #undef ENCODE_BUSDEVFN
1387 	const struct dmi_system_id *dmi = dmi_first_match(sysids);
1388 	unsigned int val;
1389 
1390 	if (!dmi)
1391 		return false;
1392 
1393 	val = (unsigned long)dmi->driver_data;
1394 
1395 	return pdev->bus->number == (val >> 8) && pdev->devfn == (val & 0xff);
1396 }
1397 
1398 static bool ahci_broken_devslp(struct pci_dev *pdev)
1399 {
1400 	/* device with broken DEVSLP but still showing SDS capability */
1401 	static const struct pci_device_id ids[] = {
1402 		{ PCI_VDEVICE(INTEL, 0x0f23)}, /* Valleyview SoC */
1403 		{}
1404 	};
1405 
1406 	return pci_match_id(ids, pdev);
1407 }
1408 
1409 #ifdef CONFIG_ATA_ACPI
1410 static void ahci_gtf_filter_workaround(struct ata_host *host)
1411 {
1412 	static const struct dmi_system_id sysids[] = {
1413 		/*
1414 		 * Aspire 3810T issues a bunch of SATA enable commands
1415 		 * via _GTF including an invalid one and one which is
1416 		 * rejected by the device.  Among the successful ones
1417 		 * is FPDMA non-zero offset enable which when enabled
1418 		 * only on the drive side leads to NCQ command
1419 		 * failures.  Filter it out.
1420 		 */
1421 		{
1422 			.ident = "Aspire 3810T",
1423 			.matches = {
1424 				DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
1425 				DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3810T"),
1426 			},
1427 			.driver_data = (void *)ATA_ACPI_FILTER_FPDMA_OFFSET,
1428 		},
1429 		{ }
1430 	};
1431 	const struct dmi_system_id *dmi = dmi_first_match(sysids);
1432 	unsigned int filter;
1433 	int i;
1434 
1435 	if (!dmi)
1436 		return;
1437 
1438 	filter = (unsigned long)dmi->driver_data;
1439 	dev_info(host->dev, "applying extra ACPI _GTF filter 0x%x for %s\n",
1440 		 filter, dmi->ident);
1441 
1442 	for (i = 0; i < host->n_ports; i++) {
1443 		struct ata_port *ap = host->ports[i];
1444 		struct ata_link *link;
1445 		struct ata_device *dev;
1446 
1447 		ata_for_each_link(link, ap, EDGE)
1448 			ata_for_each_dev(dev, link, ALL)
1449 				dev->gtf_filter |= filter;
1450 	}
1451 }
1452 #else
1453 static inline void ahci_gtf_filter_workaround(struct ata_host *host)
1454 {}
1455 #endif
1456 
1457 /*
1458  * On the Acer Aspire Switch Alpha 12, sometimes all SATA ports are detected
1459  * as DUMMY, or detected but eventually get a "link down" and never get up
1460  * again. When this happens, CAP.NP may hold a value of 0x00 or 0x01, and the
1461  * port_map may hold a value of 0x00.
1462  *
1463  * Overriding CAP.NP to 0x02 and the port_map to 0x7 will reveal all 3 ports
1464  * and can significantly reduce the occurrence of the problem.
1465  *
1466  * https://bugzilla.kernel.org/show_bug.cgi?id=189471
1467  */
1468 static void acer_sa5_271_workaround(struct ahci_host_priv *hpriv,
1469 				    struct pci_dev *pdev)
1470 {
1471 	static const struct dmi_system_id sysids[] = {
1472 		{
1473 			.ident = "Acer Switch Alpha 12",
1474 			.matches = {
1475 				DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
1476 				DMI_MATCH(DMI_PRODUCT_NAME, "Switch SA5-271")
1477 			},
1478 		},
1479 		{ }
1480 	};
1481 
1482 	if (dmi_check_system(sysids)) {
1483 		dev_info(&pdev->dev, "enabling Acer Switch Alpha 12 workaround\n");
1484 		if ((hpriv->saved_cap & 0xC734FF00) == 0xC734FF00) {
1485 			hpriv->port_map = 0x7;
1486 			hpriv->cap = 0xC734FF02;
1487 		}
1488 	}
1489 }
1490 
1491 #ifdef CONFIG_ARM64
1492 /*
1493  * Due to ERRATA#22536, ThunderX needs to handle HOST_IRQ_STAT differently.
1494  * Workaround is to make sure all pending IRQs are served before leaving
1495  * handler.
1496  */
1497 static irqreturn_t ahci_thunderx_irq_handler(int irq, void *dev_instance)
1498 {
1499 	struct ata_host *host = dev_instance;
1500 	struct ahci_host_priv *hpriv;
1501 	unsigned int rc = 0;
1502 	void __iomem *mmio;
1503 	u32 irq_stat, irq_masked;
1504 	unsigned int handled = 1;
1505 
1506 	hpriv = host->private_data;
1507 	mmio = hpriv->mmio;
1508 	irq_stat = readl(mmio + HOST_IRQ_STAT);
1509 	if (!irq_stat)
1510 		return IRQ_NONE;
1511 
1512 	do {
1513 		irq_masked = irq_stat & hpriv->port_map;
1514 		spin_lock(&host->lock);
1515 		rc = ahci_handle_port_intr(host, irq_masked);
1516 		if (!rc)
1517 			handled = 0;
1518 		writel(irq_stat, mmio + HOST_IRQ_STAT);
1519 		irq_stat = readl(mmio + HOST_IRQ_STAT);
1520 		spin_unlock(&host->lock);
1521 	} while (irq_stat);
1522 
1523 	return IRQ_RETVAL(handled);
1524 }
1525 #endif
1526 
1527 static void ahci_remap_check(struct pci_dev *pdev, int bar,
1528 		struct ahci_host_priv *hpriv)
1529 {
1530 	int i;
1531 	u32 cap;
1532 
1533 	/*
1534 	 * Check if this device might have remapped nvme devices.
1535 	 */
1536 	if (pdev->vendor != PCI_VENDOR_ID_INTEL ||
1537 	    pci_resource_len(pdev, bar) < SZ_512K ||
1538 	    bar != AHCI_PCI_BAR_STANDARD ||
1539 	    !(readl(hpriv->mmio + AHCI_VSCAP) & 1))
1540 		return;
1541 
1542 	cap = readq(hpriv->mmio + AHCI_REMAP_CAP);
1543 	for (i = 0; i < AHCI_MAX_REMAP; i++) {
1544 		if ((cap & (1 << i)) == 0)
1545 			continue;
1546 		if (readl(hpriv->mmio + ahci_remap_dcc(i))
1547 				!= PCI_CLASS_STORAGE_EXPRESS)
1548 			continue;
1549 
1550 		/* We've found a remapped device */
1551 		hpriv->remapped_nvme++;
1552 	}
1553 
1554 	if (!hpriv->remapped_nvme)
1555 		return;
1556 
1557 	dev_warn(&pdev->dev, "Found %u remapped NVMe devices.\n",
1558 		 hpriv->remapped_nvme);
1559 	dev_warn(&pdev->dev,
1560 		 "Switch your BIOS from RAID to AHCI mode to use them.\n");
1561 
1562 	/*
1563 	 * Don't rely on the msi-x capability in the remap case,
1564 	 * share the legacy interrupt across ahci and remapped devices.
1565 	 */
1566 	hpriv->flags |= AHCI_HFLAG_NO_MSI;
1567 }
1568 
1569 static int ahci_get_irq_vector(struct ata_host *host, int port)
1570 {
1571 	return pci_irq_vector(to_pci_dev(host->dev), port);
1572 }
1573 
1574 static int ahci_init_msi(struct pci_dev *pdev, unsigned int n_ports,
1575 			struct ahci_host_priv *hpriv)
1576 {
1577 	int nvec;
1578 
1579 	if (hpriv->flags & AHCI_HFLAG_NO_MSI)
1580 		return -ENODEV;
1581 
1582 	/*
1583 	 * If number of MSIs is less than number of ports then Sharing Last
1584 	 * Message mode could be enforced. In this case assume that advantage
1585 	 * of multipe MSIs is negated and use single MSI mode instead.
1586 	 */
1587 	if (n_ports > 1) {
1588 		nvec = pci_alloc_irq_vectors(pdev, n_ports, INT_MAX,
1589 				PCI_IRQ_MSIX | PCI_IRQ_MSI);
1590 		if (nvec > 0) {
1591 			if (!(readl(hpriv->mmio + HOST_CTL) & HOST_MRSM)) {
1592 				hpriv->get_irq_vector = ahci_get_irq_vector;
1593 				hpriv->flags |= AHCI_HFLAG_MULTI_MSI;
1594 				return nvec;
1595 			}
1596 
1597 			/*
1598 			 * Fallback to single MSI mode if the controller
1599 			 * enforced MRSM mode.
1600 			 */
1601 			printk(KERN_INFO
1602 				"ahci: MRSM is on, fallback to single MSI\n");
1603 			pci_free_irq_vectors(pdev);
1604 		}
1605 	}
1606 
1607 	/*
1608 	 * If the host is not capable of supporting per-port vectors, fall
1609 	 * back to single MSI before finally attempting single MSI-X.
1610 	 */
1611 	nvec = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSI);
1612 	if (nvec == 1)
1613 		return nvec;
1614 	return pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSIX);
1615 }
1616 
1617 static void ahci_update_initial_lpm_policy(struct ata_port *ap,
1618 					   struct ahci_host_priv *hpriv)
1619 {
1620 	int policy = CONFIG_SATA_MOBILE_LPM_POLICY;
1621 
1622 
1623 	/* Ignore processing for chipsets that don't use policy */
1624 	if (!(hpriv->flags & AHCI_HFLAG_USE_LPM_POLICY))
1625 		return;
1626 
1627 	/* user modified policy via module param */
1628 	if (mobile_lpm_policy != -1) {
1629 		policy = mobile_lpm_policy;
1630 		goto update_policy;
1631 	}
1632 
1633 	if (policy > ATA_LPM_MED_POWER && pm_suspend_default_s2idle()) {
1634 		if (hpriv->cap & HOST_CAP_PART)
1635 			policy = ATA_LPM_MIN_POWER_WITH_PARTIAL;
1636 		else if (hpriv->cap & HOST_CAP_SSC)
1637 			policy = ATA_LPM_MIN_POWER;
1638 	}
1639 
1640 update_policy:
1641 	if (policy >= ATA_LPM_UNKNOWN && policy <= ATA_LPM_MIN_POWER)
1642 		ap->target_lpm_policy = policy;
1643 }
1644 
1645 static void ahci_intel_pcs_quirk(struct pci_dev *pdev, struct ahci_host_priv *hpriv)
1646 {
1647 	const struct pci_device_id *id = pci_match_id(ahci_pci_tbl, pdev);
1648 	u16 tmp16;
1649 
1650 	/*
1651 	 * Only apply the 6-port PCS quirk for known legacy platforms.
1652 	 */
1653 	if (!id || id->vendor != PCI_VENDOR_ID_INTEL)
1654 		return;
1655 
1656 	/* Skip applying the quirk on Denverton and beyond */
1657 	if (((enum board_ids) id->driver_data) >= board_ahci_pcs7)
1658 		return;
1659 
1660 	/*
1661 	 * port_map is determined from PORTS_IMPL PCI register which is
1662 	 * implemented as write or write-once register.  If the register
1663 	 * isn't programmed, ahci automatically generates it from number
1664 	 * of ports, which is good enough for PCS programming. It is
1665 	 * otherwise expected that platform firmware enables the ports
1666 	 * before the OS boots.
1667 	 */
1668 	pci_read_config_word(pdev, PCS_6, &tmp16);
1669 	if ((tmp16 & hpriv->port_map) != hpriv->port_map) {
1670 		tmp16 |= hpriv->port_map;
1671 		pci_write_config_word(pdev, PCS_6, tmp16);
1672 	}
1673 }
1674 
1675 static ssize_t remapped_nvme_show(struct device *dev,
1676 				  struct device_attribute *attr,
1677 				  char *buf)
1678 {
1679 	struct ata_host *host = dev_get_drvdata(dev);
1680 	struct ahci_host_priv *hpriv = host->private_data;
1681 
1682 	return sysfs_emit(buf, "%u\n", hpriv->remapped_nvme);
1683 }
1684 
1685 static DEVICE_ATTR_RO(remapped_nvme);
1686 
1687 static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
1688 {
1689 	unsigned int board_id = ent->driver_data;
1690 	struct ata_port_info pi = ahci_port_info[board_id];
1691 	const struct ata_port_info *ppi[] = { &pi, NULL };
1692 	struct device *dev = &pdev->dev;
1693 	struct ahci_host_priv *hpriv;
1694 	struct ata_host *host;
1695 	int n_ports, i, rc;
1696 	int ahci_pci_bar = AHCI_PCI_BAR_STANDARD;
1697 
1698 	WARN_ON((int)ATA_MAX_QUEUE > AHCI_MAX_CMDS);
1699 
1700 	ata_print_version_once(&pdev->dev, DRV_VERSION);
1701 
1702 	/* The AHCI driver can only drive the SATA ports, the PATA driver
1703 	   can drive them all so if both drivers are selected make sure
1704 	   AHCI stays out of the way */
1705 	if (pdev->vendor == PCI_VENDOR_ID_MARVELL && !marvell_enable)
1706 		return -ENODEV;
1707 
1708 	/* Apple BIOS on MCP89 prevents us using AHCI */
1709 	if (is_mcp89_apple(pdev))
1710 		ahci_mcp89_apple_enable(pdev);
1711 
1712 	/* Promise's PDC42819 is a SAS/SATA controller that has an AHCI mode.
1713 	 * At the moment, we can only use the AHCI mode. Let the users know
1714 	 * that for SAS drives they're out of luck.
1715 	 */
1716 	if (pdev->vendor == PCI_VENDOR_ID_PROMISE)
1717 		dev_info(&pdev->dev,
1718 			 "PDC42819 can only drive SATA devices with this driver\n");
1719 
1720 	/* Some devices use non-standard BARs */
1721 	if (pdev->vendor == PCI_VENDOR_ID_STMICRO && pdev->device == 0xCC06)
1722 		ahci_pci_bar = AHCI_PCI_BAR_STA2X11;
1723 	else if (pdev->vendor == 0x1c44 && pdev->device == 0x8000)
1724 		ahci_pci_bar = AHCI_PCI_BAR_ENMOTUS;
1725 	else if (pdev->vendor == PCI_VENDOR_ID_CAVIUM) {
1726 		if (pdev->device == 0xa01c)
1727 			ahci_pci_bar = AHCI_PCI_BAR_CAVIUM;
1728 		if (pdev->device == 0xa084)
1729 			ahci_pci_bar = AHCI_PCI_BAR_CAVIUM_GEN5;
1730 	} else if (pdev->vendor == PCI_VENDOR_ID_LOONGSON) {
1731 		if (pdev->device == 0x7a08)
1732 			ahci_pci_bar = AHCI_PCI_BAR_LOONGSON;
1733 	}
1734 
1735 	/* acquire resources */
1736 	rc = pcim_enable_device(pdev);
1737 	if (rc)
1738 		return rc;
1739 
1740 	if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
1741 	    (pdev->device == 0x2652 || pdev->device == 0x2653)) {
1742 		u8 map;
1743 
1744 		/* ICH6s share the same PCI ID for both piix and ahci
1745 		 * modes.  Enabling ahci mode while MAP indicates
1746 		 * combined mode is a bad idea.  Yield to ata_piix.
1747 		 */
1748 		pci_read_config_byte(pdev, ICH_MAP, &map);
1749 		if (map & 0x3) {
1750 			dev_info(&pdev->dev,
1751 				 "controller is in combined mode, can't enable AHCI mode\n");
1752 			return -ENODEV;
1753 		}
1754 	}
1755 
1756 	/* AHCI controllers often implement SFF compatible interface.
1757 	 * Grab all PCI BARs just in case.
1758 	 */
1759 	rc = pcim_iomap_regions_request_all(pdev, 1 << ahci_pci_bar, DRV_NAME);
1760 	if (rc == -EBUSY)
1761 		pcim_pin_device(pdev);
1762 	if (rc)
1763 		return rc;
1764 
1765 	hpriv = devm_kzalloc(dev, sizeof(*hpriv), GFP_KERNEL);
1766 	if (!hpriv)
1767 		return -ENOMEM;
1768 	hpriv->flags |= (unsigned long)pi.private_data;
1769 
1770 	/* MCP65 revision A1 and A2 can't do MSI */
1771 	if (board_id == board_ahci_mcp65 &&
1772 	    (pdev->revision == 0xa1 || pdev->revision == 0xa2))
1773 		hpriv->flags |= AHCI_HFLAG_NO_MSI;
1774 
1775 	/* SB800 does NOT need the workaround to ignore SERR_INTERNAL */
1776 	if (board_id == board_ahci_sb700 && pdev->revision >= 0x40)
1777 		hpriv->flags &= ~AHCI_HFLAG_IGN_SERR_INTERNAL;
1778 
1779 	/* only some SB600s can do 64bit DMA */
1780 	if (ahci_sb600_enable_64bit(pdev))
1781 		hpriv->flags &= ~AHCI_HFLAG_32BIT_ONLY;
1782 
1783 	hpriv->mmio = pcim_iomap_table(pdev)[ahci_pci_bar];
1784 
1785 	/* detect remapped nvme devices */
1786 	ahci_remap_check(pdev, ahci_pci_bar, hpriv);
1787 
1788 	sysfs_add_file_to_group(&pdev->dev.kobj,
1789 				&dev_attr_remapped_nvme.attr,
1790 				NULL);
1791 
1792 	/* must set flag prior to save config in order to take effect */
1793 	if (ahci_broken_devslp(pdev))
1794 		hpriv->flags |= AHCI_HFLAG_NO_DEVSLP;
1795 
1796 #ifdef CONFIG_ARM64
1797 	if (pdev->vendor == PCI_VENDOR_ID_HUAWEI &&
1798 	    pdev->device == 0xa235 &&
1799 	    pdev->revision < 0x30)
1800 		hpriv->flags |= AHCI_HFLAG_NO_SXS;
1801 
1802 	if (pdev->vendor == 0x177d && pdev->device == 0xa01c)
1803 		hpriv->irq_handler = ahci_thunderx_irq_handler;
1804 #endif
1805 
1806 	/* save initial config */
1807 	ahci_pci_save_initial_config(pdev, hpriv);
1808 
1809 	/* prepare host */
1810 	if (hpriv->cap & HOST_CAP_NCQ) {
1811 		pi.flags |= ATA_FLAG_NCQ;
1812 		/*
1813 		 * Auto-activate optimization is supposed to be
1814 		 * supported on all AHCI controllers indicating NCQ
1815 		 * capability, but it seems to be broken on some
1816 		 * chipsets including NVIDIAs.
1817 		 */
1818 		if (!(hpriv->flags & AHCI_HFLAG_NO_FPDMA_AA))
1819 			pi.flags |= ATA_FLAG_FPDMA_AA;
1820 
1821 		/*
1822 		 * All AHCI controllers should be forward-compatible
1823 		 * with the new auxiliary field. This code should be
1824 		 * conditionalized if any buggy AHCI controllers are
1825 		 * encountered.
1826 		 */
1827 		pi.flags |= ATA_FLAG_FPDMA_AUX;
1828 	}
1829 
1830 	if (hpriv->cap & HOST_CAP_PMP)
1831 		pi.flags |= ATA_FLAG_PMP;
1832 
1833 	ahci_set_em_messages(hpriv, &pi);
1834 
1835 	if (ahci_broken_system_poweroff(pdev)) {
1836 		pi.flags |= ATA_FLAG_NO_POWEROFF_SPINDOWN;
1837 		dev_info(&pdev->dev,
1838 			"quirky BIOS, skipping spindown on poweroff\n");
1839 	}
1840 
1841 	if (ahci_broken_lpm(pdev)) {
1842 		pi.flags |= ATA_FLAG_NO_LPM;
1843 		dev_warn(&pdev->dev,
1844 			 "BIOS update required for Link Power Management support\n");
1845 	}
1846 
1847 	if (ahci_broken_suspend(pdev)) {
1848 		hpriv->flags |= AHCI_HFLAG_NO_SUSPEND;
1849 		dev_warn(&pdev->dev,
1850 			 "BIOS update required for suspend/resume\n");
1851 	}
1852 
1853 	if (ahci_broken_online(pdev)) {
1854 		hpriv->flags |= AHCI_HFLAG_SRST_TOUT_IS_OFFLINE;
1855 		dev_info(&pdev->dev,
1856 			 "online status unreliable, applying workaround\n");
1857 	}
1858 
1859 
1860 	/* Acer SA5-271 workaround modifies private_data */
1861 	acer_sa5_271_workaround(hpriv, pdev);
1862 
1863 	/* CAP.NP sometimes indicate the index of the last enabled
1864 	 * port, at other times, that of the last possible port, so
1865 	 * determining the maximum port number requires looking at
1866 	 * both CAP.NP and port_map.
1867 	 */
1868 	n_ports = max(ahci_nr_ports(hpriv->cap), fls(hpriv->port_map));
1869 
1870 	host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
1871 	if (!host)
1872 		return -ENOMEM;
1873 	host->private_data = hpriv;
1874 
1875 	if (ahci_init_msi(pdev, n_ports, hpriv) < 0) {
1876 		/* legacy intx interrupts */
1877 		pci_intx(pdev, 1);
1878 	}
1879 	hpriv->irq = pci_irq_vector(pdev, 0);
1880 
1881 	if (!(hpriv->cap & HOST_CAP_SSS) || ahci_ignore_sss)
1882 		host->flags |= ATA_HOST_PARALLEL_SCAN;
1883 	else
1884 		dev_info(&pdev->dev, "SSS flag set, parallel bus scan disabled\n");
1885 
1886 	if (!(hpriv->cap & HOST_CAP_PART))
1887 		host->flags |= ATA_HOST_NO_PART;
1888 
1889 	if (!(hpriv->cap & HOST_CAP_SSC))
1890 		host->flags |= ATA_HOST_NO_SSC;
1891 
1892 	if (!(hpriv->cap2 & HOST_CAP2_SDS))
1893 		host->flags |= ATA_HOST_NO_DEVSLP;
1894 
1895 	if (pi.flags & ATA_FLAG_EM)
1896 		ahci_reset_em(host);
1897 
1898 	for (i = 0; i < host->n_ports; i++) {
1899 		struct ata_port *ap = host->ports[i];
1900 
1901 		ata_port_pbar_desc(ap, ahci_pci_bar, -1, "abar");
1902 		ata_port_pbar_desc(ap, ahci_pci_bar,
1903 				   0x100 + ap->port_no * 0x80, "port");
1904 
1905 		/* set enclosure management message type */
1906 		if (ap->flags & ATA_FLAG_EM)
1907 			ap->em_message_type = hpriv->em_msg_type;
1908 
1909 		ahci_update_initial_lpm_policy(ap, hpriv);
1910 
1911 		/* disabled/not-implemented port */
1912 		if (!(hpriv->port_map & (1 << i)))
1913 			ap->ops = &ata_dummy_port_ops;
1914 	}
1915 
1916 	/* apply workaround for ASUS P5W DH Deluxe mainboard */
1917 	ahci_p5wdh_workaround(host);
1918 
1919 	/* apply gtf filter quirk */
1920 	ahci_gtf_filter_workaround(host);
1921 
1922 	/* initialize adapter */
1923 	rc = ahci_configure_dma_masks(pdev, hpriv->cap & HOST_CAP_64);
1924 	if (rc)
1925 		return rc;
1926 
1927 	rc = ahci_pci_reset_controller(host);
1928 	if (rc)
1929 		return rc;
1930 
1931 	ahci_pci_init_controller(host);
1932 	ahci_pci_print_info(host);
1933 
1934 	pci_set_master(pdev);
1935 
1936 	rc = ahci_host_activate(host, &ahci_sht);
1937 	if (rc)
1938 		return rc;
1939 
1940 	pm_runtime_put_noidle(&pdev->dev);
1941 	return 0;
1942 }
1943 
1944 static void ahci_shutdown_one(struct pci_dev *pdev)
1945 {
1946 	ata_pci_shutdown_one(pdev);
1947 }
1948 
1949 static void ahci_remove_one(struct pci_dev *pdev)
1950 {
1951 	sysfs_remove_file_from_group(&pdev->dev.kobj,
1952 				     &dev_attr_remapped_nvme.attr,
1953 				     NULL);
1954 	pm_runtime_get_noresume(&pdev->dev);
1955 	ata_pci_remove_one(pdev);
1956 }
1957 
1958 module_pci_driver(ahci_pci_driver);
1959 
1960 MODULE_AUTHOR("Jeff Garzik");
1961 MODULE_DESCRIPTION("AHCI SATA low-level driver");
1962 MODULE_LICENSE("GPL");
1963 MODULE_DEVICE_TABLE(pci, ahci_pci_tbl);
1964 MODULE_VERSION(DRV_VERSION);
1965