xref: /freebsd/sys/dev/ahci/ahci.h (revision 81966bce06dac45f42bda62b14dba0756ef28505)
1 /*-
2  * Copyright (c) 1998 - 2008 S�ren Schmidt <sos@FreeBSD.org>
3  * Copyright (c) 2009 Alexander Motin <mav@FreeBSD.org>
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer,
11  *    without modification, immediately at the beginning of the file.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26  *
27  * $FreeBSD$
28  */
29 
30 /* ATA register defines */
31 #define ATA_DATA                        0       /* (RW) data */
32 
33 #define ATA_FEATURE                     1       /* (W) feature */
34 #define         ATA_F_DMA               0x01    /* enable DMA */
35 #define         ATA_F_OVL               0x02    /* enable overlap */
36 
37 #define ATA_COUNT                       2       /* (W) sector count */
38 
39 #define ATA_SECTOR                      3       /* (RW) sector # */
40 #define ATA_CYL_LSB                     4       /* (RW) cylinder# LSB */
41 #define ATA_CYL_MSB                     5       /* (RW) cylinder# MSB */
42 #define ATA_DRIVE                       6       /* (W) Sector/Drive/Head */
43 #define         ATA_D_LBA               0x40    /* use LBA addressing */
44 #define         ATA_D_IBM               0xa0    /* 512 byte sectors, ECC */
45 
46 #define ATA_COMMAND                     7       /* (W) command */
47 
48 #define ATA_ERROR                       8       /* (R) error */
49 #define         ATA_E_ILI               0x01    /* illegal length */
50 #define         ATA_E_NM                0x02    /* no media */
51 #define         ATA_E_ABORT             0x04    /* command aborted */
52 #define         ATA_E_MCR               0x08    /* media change request */
53 #define         ATA_E_IDNF              0x10    /* ID not found */
54 #define         ATA_E_MC                0x20    /* media changed */
55 #define         ATA_E_UNC               0x40    /* uncorrectable data */
56 #define         ATA_E_ICRC              0x80    /* UDMA crc error */
57 #define		ATA_E_ATAPI_SENSE_MASK	0xf0	/* ATAPI sense key mask */
58 
59 #define ATA_IREASON                     9       /* (R) interrupt reason */
60 #define         ATA_I_CMD               0x01    /* cmd (1) | data (0) */
61 #define         ATA_I_IN                0x02    /* read (1) | write (0) */
62 #define         ATA_I_RELEASE           0x04    /* released bus (1) */
63 #define         ATA_I_TAGMASK           0xf8    /* tag mask */
64 
65 #define ATA_STATUS                      10      /* (R) status */
66 #define ATA_ALTSTAT                     11      /* (R) alternate status */
67 #define         ATA_S_ERROR             0x01    /* error */
68 #define         ATA_S_INDEX             0x02    /* index */
69 #define         ATA_S_CORR              0x04    /* data corrected */
70 #define         ATA_S_DRQ               0x08    /* data request */
71 #define         ATA_S_DSC               0x10    /* drive seek completed */
72 #define         ATA_S_SERVICE           0x10    /* drive needs service */
73 #define         ATA_S_DWF               0x20    /* drive write fault */
74 #define         ATA_S_DMA               0x20    /* DMA ready */
75 #define         ATA_S_READY             0x40    /* drive ready */
76 #define         ATA_S_BUSY              0x80    /* busy */
77 
78 #define ATA_CONTROL                     12      /* (W) control */
79 #define         ATA_A_IDS               0x02    /* disable interrupts */
80 #define         ATA_A_RESET             0x04    /* RESET controller */
81 #define         ATA_A_4BIT              0x08    /* 4 head bits */
82 #define         ATA_A_HOB               0x80    /* High Order Byte enable */
83 
84 /* SATA register defines */
85 #define ATA_SSTATUS                     13
86 #define         ATA_SS_DET_MASK         0x0000000f
87 #define         ATA_SS_DET_NO_DEVICE    0x00000000
88 #define         ATA_SS_DET_DEV_PRESENT  0x00000001
89 #define         ATA_SS_DET_PHY_ONLINE   0x00000003
90 #define         ATA_SS_DET_PHY_OFFLINE  0x00000004
91 
92 #define         ATA_SS_SPD_MASK         0x000000f0
93 #define         ATA_SS_SPD_NO_SPEED     0x00000000
94 #define         ATA_SS_SPD_GEN1         0x00000010
95 #define         ATA_SS_SPD_GEN2         0x00000020
96 #define         ATA_SS_SPD_GEN3         0x00000040
97 
98 #define         ATA_SS_IPM_MASK         0x00000f00
99 #define         ATA_SS_IPM_NO_DEVICE    0x00000000
100 #define         ATA_SS_IPM_ACTIVE       0x00000100
101 #define         ATA_SS_IPM_PARTIAL      0x00000200
102 #define         ATA_SS_IPM_SLUMBER      0x00000600
103 
104 #define ATA_SERROR                      14
105 #define         ATA_SE_DATA_CORRECTED   0x00000001
106 #define         ATA_SE_COMM_CORRECTED   0x00000002
107 #define         ATA_SE_DATA_ERR         0x00000100
108 #define         ATA_SE_COMM_ERR         0x00000200
109 #define         ATA_SE_PROT_ERR         0x00000400
110 #define         ATA_SE_HOST_ERR         0x00000800
111 #define         ATA_SE_PHY_CHANGED      0x00010000
112 #define         ATA_SE_PHY_IERROR       0x00020000
113 #define         ATA_SE_COMM_WAKE        0x00040000
114 #define         ATA_SE_DECODE_ERR       0x00080000
115 #define         ATA_SE_PARITY_ERR       0x00100000
116 #define         ATA_SE_CRC_ERR          0x00200000
117 #define         ATA_SE_HANDSHAKE_ERR    0x00400000
118 #define         ATA_SE_LINKSEQ_ERR      0x00800000
119 #define         ATA_SE_TRANSPORT_ERR    0x01000000
120 #define         ATA_SE_UNKNOWN_FIS      0x02000000
121 #define         ATA_SE_EXCHANGED        0x04000000
122 
123 #define ATA_SCONTROL                    15
124 #define         ATA_SC_DET_MASK         0x0000000f
125 #define         ATA_SC_DET_IDLE         0x00000000
126 #define         ATA_SC_DET_RESET        0x00000001
127 #define         ATA_SC_DET_DISABLE      0x00000004
128 
129 #define         ATA_SC_SPD_MASK         0x000000f0
130 #define         ATA_SC_SPD_NO_SPEED     0x00000000
131 #define         ATA_SC_SPD_SPEED_GEN1   0x00000010
132 #define         ATA_SC_SPD_SPEED_GEN2   0x00000020
133 #define         ATA_SC_SPD_SPEED_GEN3   0x00000040
134 
135 #define         ATA_SC_IPM_MASK         0x00000f00
136 #define         ATA_SC_IPM_NONE         0x00000000
137 #define         ATA_SC_IPM_DIS_PARTIAL  0x00000100
138 #define         ATA_SC_IPM_DIS_SLUMBER  0x00000200
139 
140 #define ATA_SACTIVE                     16
141 
142 #define AHCI_MAX_PORTS			32
143 #define AHCI_MAX_SLOTS			32
144 
145 /* SATA AHCI v1.0 register defines */
146 #define AHCI_CAP                    0x00
147 #define		AHCI_CAP_NPMASK	0x0000001f
148 #define		AHCI_CAP_SXS	0x00000020
149 #define		AHCI_CAP_EMS	0x00000040
150 #define		AHCI_CAP_CCCS	0x00000080
151 #define		AHCI_CAP_NCS	0x00001F00
152 #define		AHCI_CAP_NCS_SHIFT	8
153 #define		AHCI_CAP_PSC	0x00002000
154 #define		AHCI_CAP_SSC	0x00004000
155 #define		AHCI_CAP_PMD	0x00008000
156 #define		AHCI_CAP_FBSS	0x00010000
157 #define		AHCI_CAP_SPM	0x00020000
158 #define		AHCI_CAP_SAM	0x00080000
159 #define		AHCI_CAP_ISS	0x00F00000
160 #define		AHCI_CAP_ISS_SHIFT	20
161 #define		AHCI_CAP_SCLO	0x01000000
162 #define		AHCI_CAP_SAL	0x02000000
163 #define		AHCI_CAP_SALP	0x04000000
164 #define		AHCI_CAP_SSS	0x08000000
165 #define		AHCI_CAP_SMPS	0x10000000
166 #define		AHCI_CAP_SSNTF	0x20000000
167 #define		AHCI_CAP_SNCQ	0x40000000
168 #define		AHCI_CAP_64BIT	0x80000000
169 
170 #define AHCI_GHC                    0x04
171 #define         AHCI_GHC_AE         0x80000000
172 #define         AHCI_GHC_MRSM       0x00000004
173 #define         AHCI_GHC_IE         0x00000002
174 #define         AHCI_GHC_HR         0x00000001
175 
176 #define AHCI_IS                     0x08
177 #define AHCI_PI                     0x0c
178 #define AHCI_VS                     0x10
179 
180 #define AHCI_CCCC                   0x14
181 #define		AHCI_CCCC_TV_MASK	0xffff0000
182 #define		AHCI_CCCC_TV_SHIFT	16
183 #define		AHCI_CCCC_CC_MASK	0x0000ff00
184 #define		AHCI_CCCC_CC_SHIFT	8
185 #define		AHCI_CCCC_INT_MASK	0x000000f8
186 #define		AHCI_CCCC_INT_SHIFT	3
187 #define		AHCI_CCCC_EN		0x00000001
188 #define AHCI_CCCP                   0x18
189 
190 #define AHCI_EM_LOC                 0x1C
191 #define AHCI_EM_CTL                 0x20
192 #define 	AHCI_EM_MR              0x00000001
193 #define 	AHCI_EM_TM              0x00000100
194 #define 	AHCI_EM_RST             0x00000200
195 #define 	AHCI_EM_LED             0x00010000
196 #define 	AHCI_EM_SAFTE           0x00020000
197 #define 	AHCI_EM_SES2            0x00040000
198 #define 	AHCI_EM_SGPIO           0x00080000
199 #define 	AHCI_EM_SMB             0x01000000
200 #define 	AHCI_EM_XMT             0x02000000
201 #define 	AHCI_EM_ALHD            0x04000000
202 #define 	AHCI_EM_PM              0x08000000
203 
204 #define AHCI_CAP2                   0x24
205 #define		AHCI_CAP2_BOH	0x00000001
206 #define		AHCI_CAP2_NVMP	0x00000002
207 #define		AHCI_CAP2_APST	0x00000004
208 
209 #define AHCI_OFFSET                 0x100
210 #define AHCI_STEP                   0x80
211 
212 #define AHCI_P_CLB                  0x00
213 #define AHCI_P_CLBU                 0x04
214 #define AHCI_P_FB                   0x08
215 #define AHCI_P_FBU                  0x0c
216 #define AHCI_P_IS                   0x10
217 #define AHCI_P_IE                   0x14
218 #define         AHCI_P_IX_DHR       0x00000001
219 #define         AHCI_P_IX_PS        0x00000002
220 #define         AHCI_P_IX_DS        0x00000004
221 #define         AHCI_P_IX_SDB       0x00000008
222 #define         AHCI_P_IX_UF        0x00000010
223 #define         AHCI_P_IX_DP        0x00000020
224 #define         AHCI_P_IX_PC        0x00000040
225 #define         AHCI_P_IX_MP        0x00000080
226 
227 #define         AHCI_P_IX_PRC       0x00400000
228 #define         AHCI_P_IX_IPM       0x00800000
229 #define         AHCI_P_IX_OF        0x01000000
230 #define         AHCI_P_IX_INF       0x04000000
231 #define         AHCI_P_IX_IF        0x08000000
232 #define         AHCI_P_IX_HBD       0x10000000
233 #define         AHCI_P_IX_HBF       0x20000000
234 #define         AHCI_P_IX_TFE       0x40000000
235 #define         AHCI_P_IX_CPD       0x80000000
236 
237 #define AHCI_P_CMD                  0x18
238 #define         AHCI_P_CMD_ST       0x00000001
239 #define         AHCI_P_CMD_SUD      0x00000002
240 #define         AHCI_P_CMD_POD      0x00000004
241 #define         AHCI_P_CMD_CLO      0x00000008
242 #define         AHCI_P_CMD_FRE      0x00000010
243 #define         AHCI_P_CMD_CCS_MASK 0x00001f00
244 #define         AHCI_P_CMD_CCS_SHIFT 8
245 #define         AHCI_P_CMD_ISS      0x00002000
246 #define         AHCI_P_CMD_FR       0x00004000
247 #define         AHCI_P_CMD_CR       0x00008000
248 #define         AHCI_P_CMD_CPS      0x00010000
249 #define         AHCI_P_CMD_PMA      0x00020000
250 #define         AHCI_P_CMD_HPCP     0x00040000
251 #define         AHCI_P_CMD_MPSP     0x00080000
252 #define         AHCI_P_CMD_CPD      0x00100000
253 #define         AHCI_P_CMD_ESP      0x00200000
254 #define         AHCI_P_CMD_FBSCP    0x00400000
255 #define         AHCI_P_CMD_APSTE    0x00800000
256 #define         AHCI_P_CMD_ATAPI    0x01000000
257 #define         AHCI_P_CMD_DLAE     0x02000000
258 #define         AHCI_P_CMD_ALPE     0x04000000
259 #define         AHCI_P_CMD_ASP      0x08000000
260 #define         AHCI_P_CMD_ICC_MASK 0xf0000000
261 #define         AHCI_P_CMD_NOOP     0x00000000
262 #define         AHCI_P_CMD_ACTIVE   0x10000000
263 #define         AHCI_P_CMD_PARTIAL  0x20000000
264 #define         AHCI_P_CMD_SLUMBER  0x60000000
265 
266 #define AHCI_P_TFD                  0x20
267 #define AHCI_P_SIG                  0x24
268 #define AHCI_P_SSTS                 0x28
269 #define AHCI_P_SCTL                 0x2c
270 #define AHCI_P_SERR                 0x30
271 #define AHCI_P_SACT                 0x34
272 #define AHCI_P_CI                   0x38
273 #define AHCI_P_SNTF                 0x3C
274 #define AHCI_P_FBS                  0x40
275 #define 	AHCI_P_FBS_EN       0x00000001
276 #define 	AHCI_P_FBS_DEC      0x00000002
277 #define 	AHCI_P_FBS_SDE      0x00000004
278 #define 	AHCI_P_FBS_DEV      0x00000f00
279 #define 	AHCI_P_FBS_DEV_SHIFT 8
280 #define 	AHCI_P_FBS_ADO      0x0000f000
281 #define 	AHCI_P_FBS_ADO_SHIFT 12
282 #define 	AHCI_P_FBS_DWE      0x000f0000
283 #define 	AHCI_P_FBS_DWE_SHIFT 16
284 
285 /* Just to be sure, if building as module. */
286 #if MAXPHYS < 512 * 1024
287 #undef MAXPHYS
288 #define MAXPHYS				512 * 1024
289 #endif
290 /* Pessimistic prognosis on number of required S/G entries */
291 #define AHCI_SG_ENTRIES	(roundup(btoc(MAXPHYS) + 1, 8))
292 /* Command list. 32 commands. First, 1Kbyte aligned. */
293 #define AHCI_CL_OFFSET              0
294 #define AHCI_CL_SIZE                32
295 /* Command tables. Up to 32 commands, Each, 128byte aligned. */
296 #define AHCI_CT_OFFSET              (AHCI_CL_OFFSET + AHCI_CL_SIZE * AHCI_MAX_SLOTS)
297 #define AHCI_CT_SIZE                (128 + AHCI_SG_ENTRIES * 16)
298 /* Total main work area. */
299 #define AHCI_WORK_SIZE              (AHCI_CT_OFFSET + AHCI_CT_SIZE * ch->numslots)
300 
301 struct ahci_dma_prd {
302     u_int64_t                   dba;
303     u_int32_t                   reserved;
304     u_int32_t                   dbc;            /* 0 based */
305 #define AHCI_PRD_MASK		0x003fffff      /* max 4MB */
306 #define AHCI_PRD_MAX		(AHCI_PRD_MASK + 1)
307 #define AHCI_PRD_IPC		(1 << 31)
308 } __packed;
309 
310 struct ahci_cmd_tab {
311     u_int8_t                    cfis[64];
312     u_int8_t                    acmd[32];
313     u_int8_t                    reserved[32];
314     struct ahci_dma_prd         prd_tab[AHCI_SG_ENTRIES];
315 } __packed;
316 
317 struct ahci_cmd_list {
318     u_int16_t                   cmd_flags;
319 #define AHCI_CMD_ATAPI		0x0020
320 #define AHCI_CMD_WRITE		0x0040
321 #define AHCI_CMD_PREFETCH		0x0080
322 #define AHCI_CMD_RESET		0x0100
323 #define AHCI_CMD_BIST		0x0200
324 #define AHCI_CMD_CLR_BUSY		0x0400
325 
326     u_int16_t                   prd_length;     /* PRD entries */
327     u_int32_t                   bytecount;
328     u_int64_t                   cmd_table_phys; /* 128byte aligned */
329 } __packed;
330 
331 /* misc defines */
332 #define ATA_IRQ_RID                     0
333 #define ATA_INTR_FLAGS                  (INTR_MPSAFE|INTR_TYPE_BIO|INTR_ENTROPY)
334 
335 struct ata_dmaslot {
336     bus_dmamap_t                data_map;       /* data DMA map */
337     int				nsegs;		/* Number of segs loaded */
338 };
339 
340 /* structure holding DMA related information */
341 struct ata_dma {
342     bus_dma_tag_t               work_tag;       /* workspace DMA tag */
343     bus_dmamap_t                work_map;       /* workspace DMA map */
344     uint8_t                     *work;          /* workspace */
345     bus_addr_t                  work_bus;       /* bus address of work */
346     bus_dma_tag_t               rfis_tag;       /* RFIS list DMA tag */
347     bus_dmamap_t                rfis_map;       /* RFIS list DMA map */
348     uint8_t                     *rfis;          /* FIS receive area */
349     bus_addr_t                  rfis_bus;       /* bus address of rfis */
350     bus_dma_tag_t               data_tag;       /* data DMA tag */
351     u_int64_t                   max_address;    /* highest DMA'able address */
352 };
353 
354 enum ahci_slot_states {
355 	AHCI_SLOT_EMPTY,
356 	AHCI_SLOT_LOADING,
357 	AHCI_SLOT_RUNNING,
358 	AHCI_SLOT_EXECUTING
359 };
360 
361 struct ahci_slot {
362     device_t                    dev;            /* Device handle */
363     u_int8_t			slot;           /* Number of this slot */
364     enum ahci_slot_states	state;          /* Slot state */
365     union ccb			*ccb;		/* CCB occupying slot */
366     struct ata_dmaslot          dma;            /* DMA data of this slot */
367     struct callout              timeout;        /* Execution timeout */
368 };
369 
370 struct ahci_device {
371 	int			revision;
372 	int			mode;
373 	u_int			bytecount;
374 	u_int			atapi;
375 	u_int			tags;
376 	u_int			caps;
377 };
378 
379 struct ahci_led {
380 	device_t		dev;		/* Device handle */
381 	struct cdev		*led;
382 	uint8_t			num;		/* Number of this led */
383 	uint8_t			state;		/* State of this led */
384 };
385 
386 #define	AHCI_NUM_LEDS		3
387 
388 /* structure describing an ATA channel */
389 struct ahci_channel {
390 	device_t		dev;            /* Device handle */
391 	int			unit;           /* Physical channel */
392 	struct resource		*r_mem;		/* Memory of this channel */
393 	struct resource		*r_irq;         /* Interrupt of this channel */
394 	void			*ih;            /* Interrupt handle */
395 	struct ata_dma		dma;            /* DMA data */
396 	struct cam_sim		*sim;
397 	struct cam_path		*path;
398 	struct ahci_led		leds[3];
399 	uint32_t		caps;		/* Controller capabilities */
400 	uint32_t		caps2;		/* Controller capabilities */
401 	uint32_t		chcaps;		/* Channel capabilities */
402 	int			quirks;
403 	int			numslots;	/* Number of present slots */
404 	int			pm_level;	/* power management level */
405 
406 	struct ahci_slot	slot[AHCI_MAX_SLOTS];
407 	union ccb		*hold[AHCI_MAX_SLOTS];
408 	struct mtx		mtx;		/* state lock */
409 	int			devices;        /* What is present */
410 	int			pm_present;	/* PM presence reported */
411 	int			fbs_enabled;	/* FIS-based switching enabled */
412 	uint32_t		oslots;		/* Occupied slots */
413 	uint32_t		rslots;		/* Running slots */
414 	uint32_t		aslots;		/* Slots with atomic commands  */
415 	uint32_t		eslots;		/* Slots in error */
416 	uint32_t		toslots;	/* Slots in timeout */
417 	int			numrslots;	/* Number of running slots */
418 	int			numrslotspd[16];/* Number of running slots per dev */
419 	int			numtslots;	/* Number of tagged slots */
420 	int			numtslotspd[16];/* Number of tagged slots per dev */
421 	int			numhslots;	/* Number of held slots */
422 	int			recoverycmd;	/* Our READ LOG active */
423 	int			fatalerr;	/* Fatal error happend */
424 	int			lastslot;	/* Last used slot */
425 	int			taggedtarget;	/* Last tagged target */
426 	int			resetting;	/* Hard-reset in progress. */
427 	int			resetpolldiv;	/* Hard-reset poll divider. */
428 	int			listening;	/* SUD bit is cleared. */
429 	int			wrongccs;	/* CCS field in CMD was wrong */
430 	union ccb		*frozen;	/* Frozen command */
431 	struct callout		pm_timer;	/* Power management events */
432 	struct callout		reset_timer;	/* Hard-reset timeout */
433 
434 	struct ahci_device	user[16];	/* User-specified settings */
435 	struct ahci_device	curr[16];	/* Current settings */
436 };
437 
438 /* structure describing a AHCI controller */
439 struct ahci_controller {
440 	device_t		dev;
441 	int			r_rid;
442 	struct resource		*r_mem;
443 	struct rman		sc_iomem;
444 	struct ahci_controller_irq {
445 		struct ahci_controller	*ctlr;
446 		struct resource		*r_irq;
447 		void			*handle;
448 		int			r_irq_rid;
449 		int			mode;
450 #define	AHCI_IRQ_MODE_ALL	0
451 #define	AHCI_IRQ_MODE_AFTER	1
452 #define	AHCI_IRQ_MODE_ONE	2
453 	} irqs[16];
454 	uint32_t		caps;		/* Controller capabilities */
455 	uint32_t		caps2;		/* Controller capabilities */
456 	uint32_t		capsem;		/* Controller capabilities */
457 	uint32_t		emloc;		/* EM buffer location */
458 	int			quirks;
459 	int			numirqs;
460 	int			channels;
461 	int			ichannels;
462 	int			ccc;		/* CCC timeout */
463 	int			cccv;		/* CCC vector */
464 	struct {
465 		void			(*function)(void *);
466 		void			*argument;
467 	} interrupt[AHCI_MAX_PORTS];
468 	struct mtx		em_mtx;		/* EM access lock */
469 };
470 
471 enum ahci_err_type {
472 	AHCI_ERR_NONE,		/* No error */
473 	AHCI_ERR_INVALID,	/* Error detected by us before submitting. */
474 	AHCI_ERR_INNOCENT,	/* Innocent victim. */
475 	AHCI_ERR_TFE,		/* Task File Error. */
476 	AHCI_ERR_SATA,		/* SATA error. */
477 	AHCI_ERR_TIMEOUT,	/* Command execution timeout. */
478 	AHCI_ERR_NCQ,		/* NCQ command error. CCB should be put on hold
479 				 * until READ LOG executed to reveal error. */
480 };
481 
482 /* macros to hide busspace uglyness */
483 #define ATA_INB(res, offset) \
484 	bus_read_1((res), (offset))
485 #define ATA_INW(res, offset) \
486 	bus_read_2((res), (offset))
487 #define ATA_INL(res, offset) \
488 	bus_read_4((res), (offset))
489 #define ATA_INSW(res, offset, addr, count) \
490 	bus_read_multi_2((res), (offset), (addr), (count))
491 #define ATA_INSW_STRM(res, offset, addr, count) \
492 	bus_read_multi_stream_2((res), (offset), (addr), (count))
493 #define ATA_INSL(res, offset, addr, count) \
494 	bus_read_multi_4((res), (offset), (addr), (count))
495 #define ATA_INSL_STRM(res, offset, addr, count) \
496 	bus_read_multi_stream_4((res), (offset), (addr), (count))
497 #define ATA_OUTB(res, offset, value) \
498 	bus_write_1((res), (offset), (value))
499 #define ATA_OUTW(res, offset, value) \
500 	bus_write_2((res), (offset), (value))
501 #define ATA_OUTL(res, offset, value) \
502 	bus_write_4((res), (offset), (value))
503 #define ATA_OUTSW(res, offset, addr, count) \
504 	bus_write_multi_2((res), (offset), (addr), (count))
505 #define ATA_OUTSW_STRM(res, offset, addr, count) \
506 	bus_write_multi_stream_2((res), (offset), (addr), (count))
507 #define ATA_OUTSL(res, offset, addr, count) \
508 	bus_write_multi_4((res), (offset), (addr), (count))
509 #define ATA_OUTSL_STRM(res, offset, addr, count) \
510 	bus_write_multi_stream_4((res), (offset), (addr), (count))
511