1
2/*
3 *  Copyright 2003-2004 Red Hat, Inc.  All rights reserved.
4 *  Copyright 2003-2004 Jeff Garzik
5 *
6 *
7 *  This program is free software; you can redistribute it and/or modify
8 *  it under the terms of the GNU General Public License as published by
9 *  the Free Software Foundation; either version 2, or (at your option)
10 *  any later version.
11 *
12 *  This program is distributed in the hope that it will be useful,
13 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
14 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 *  GNU General Public License for more details.
16 *
17 *  You should have received a copy of the GNU General Public License
18 *  along with this program; see the file COPYING.  If not, write to
19 *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
20 *
21 *
22 *  libata documentation is available via 'make {ps|pdf}docs',
23 *  as Documentation/DocBook/libata.*
24 *
25 *  Hardware documentation available from http://www.t13.org/
26 *
27 */
28
29#ifndef __LINUX_ATA_H__
30#define __LINUX_ATA_H__
31
32#include <linux/kernel.h>
33#include <linux/string.h>
34#include <linux/types.h>
35#include <asm/byteorder.h>
36
37/* defines only for the constants which don't work well as enums */
38#define ATA_DMA_BOUNDARY	0xffffUL
39#define ATA_DMA_MASK		0xffffffffULL
40
41enum {
42	/* various global constants */
43	ATA_MAX_DEVICES		= 2,	/* per bus/port */
44	ATA_MAX_PRD		= 256,	/* we could make these 256/256 */
45	ATA_SECT_SIZE		= 512,
46	ATA_MAX_SECTORS_128	= 128,
47	ATA_MAX_SECTORS		= 256,
48	ATA_MAX_SECTORS_1024    = 1024,
49	ATA_MAX_SECTORS_LBA48	= 65535,/* TODO: 65536? */
50	ATA_MAX_SECTORS_TAPE	= 65535,
51
52	ATA_ID_WORDS		= 256,
53	ATA_ID_CONFIG		= 0,
54	ATA_ID_CYLS		= 1,
55	ATA_ID_HEADS		= 3,
56	ATA_ID_SECTORS		= 6,
57	ATA_ID_SERNO		= 10,
58	ATA_ID_BUF_SIZE		= 21,
59	ATA_ID_FW_REV		= 23,
60	ATA_ID_PROD		= 27,
61	ATA_ID_MAX_MULTSECT	= 47,
62	ATA_ID_DWORD_IO		= 48,
63	ATA_ID_CAPABILITY	= 49,
64	ATA_ID_OLD_PIO_MODES	= 51,
65	ATA_ID_OLD_DMA_MODES	= 52,
66	ATA_ID_FIELD_VALID	= 53,
67	ATA_ID_CUR_CYLS		= 54,
68	ATA_ID_CUR_HEADS	= 55,
69	ATA_ID_CUR_SECTORS	= 56,
70	ATA_ID_MULTSECT		= 59,
71	ATA_ID_LBA_CAPACITY	= 60,
72	ATA_ID_SWDMA_MODES	= 62,
73	ATA_ID_MWDMA_MODES	= 63,
74	ATA_ID_PIO_MODES	= 64,
75	ATA_ID_EIDE_DMA_MIN	= 65,
76	ATA_ID_EIDE_DMA_TIME	= 66,
77	ATA_ID_EIDE_PIO		= 67,
78	ATA_ID_EIDE_PIO_IORDY	= 68,
79	ATA_ID_ADDITIONAL_SUPP	= 69,
80	ATA_ID_QUEUE_DEPTH	= 75,
81	ATA_ID_SATA_CAPABILITY	= 76,
82	ATA_ID_SATA_CAPABILITY_2	= 77,
83	ATA_ID_FEATURE_SUPP	= 78,
84	ATA_ID_MAJOR_VER	= 80,
85	ATA_ID_COMMAND_SET_1	= 82,
86	ATA_ID_COMMAND_SET_2	= 83,
87	ATA_ID_CFSSE		= 84,
88	ATA_ID_CFS_ENABLE_1	= 85,
89	ATA_ID_CFS_ENABLE_2	= 86,
90	ATA_ID_CSF_DEFAULT	= 87,
91	ATA_ID_UDMA_MODES	= 88,
92	ATA_ID_HW_CONFIG	= 93,
93	ATA_ID_SPG		= 98,
94	ATA_ID_LBA_CAPACITY_2	= 100,
95	ATA_ID_SECTOR_SIZE	= 106,
96	ATA_ID_WWN		= 108,
97	ATA_ID_LOGICAL_SECTOR_SIZE	= 117,	/* and 118 */
98	ATA_ID_COMMAND_SET_3	= 119,
99	ATA_ID_COMMAND_SET_4	= 120,
100	ATA_ID_LAST_LUN		= 126,
101	ATA_ID_DLF		= 128,
102	ATA_ID_CSFO		= 129,
103	ATA_ID_CFA_POWER	= 160,
104	ATA_ID_CFA_KEY_MGMT	= 162,
105	ATA_ID_CFA_MODES	= 163,
106	ATA_ID_DATA_SET_MGMT	= 169,
107	ATA_ID_ROT_SPEED	= 217,
108	ATA_ID_PIO4		= (1 << 1),
109
110	ATA_ID_SERNO_LEN	= 20,
111	ATA_ID_FW_REV_LEN	= 8,
112	ATA_ID_PROD_LEN		= 40,
113	ATA_ID_WWN_LEN		= 8,
114
115	ATA_PCI_CTL_OFS		= 2,
116
117	ATA_PIO0		= (1 << 0),
118	ATA_PIO1		= ATA_PIO0 | (1 << 1),
119	ATA_PIO2		= ATA_PIO1 | (1 << 2),
120	ATA_PIO3		= ATA_PIO2 | (1 << 3),
121	ATA_PIO4		= ATA_PIO3 | (1 << 4),
122	ATA_PIO5		= ATA_PIO4 | (1 << 5),
123	ATA_PIO6		= ATA_PIO5 | (1 << 6),
124
125	ATA_PIO4_ONLY		= (1 << 4),
126
127	ATA_SWDMA0		= (1 << 0),
128	ATA_SWDMA1		= ATA_SWDMA0 | (1 << 1),
129	ATA_SWDMA2		= ATA_SWDMA1 | (1 << 2),
130
131	ATA_SWDMA2_ONLY		= (1 << 2),
132
133	ATA_MWDMA0		= (1 << 0),
134	ATA_MWDMA1		= ATA_MWDMA0 | (1 << 1),
135	ATA_MWDMA2		= ATA_MWDMA1 | (1 << 2),
136	ATA_MWDMA3		= ATA_MWDMA2 | (1 << 3),
137	ATA_MWDMA4		= ATA_MWDMA3 | (1 << 4),
138
139	ATA_MWDMA12_ONLY	= (1 << 1) | (1 << 2),
140	ATA_MWDMA2_ONLY		= (1 << 2),
141
142	ATA_UDMA0		= (1 << 0),
143	ATA_UDMA1		= ATA_UDMA0 | (1 << 1),
144	ATA_UDMA2		= ATA_UDMA1 | (1 << 2),
145	ATA_UDMA3		= ATA_UDMA2 | (1 << 3),
146	ATA_UDMA4		= ATA_UDMA3 | (1 << 4),
147	ATA_UDMA5		= ATA_UDMA4 | (1 << 5),
148	ATA_UDMA6		= ATA_UDMA5 | (1 << 6),
149	ATA_UDMA7		= ATA_UDMA6 | (1 << 7),
150	/* ATA_UDMA7 is just for completeness... doesn't exist (yet?).  */
151
152	ATA_UDMA24_ONLY		= (1 << 2) | (1 << 4),
153
154	ATA_UDMA_MASK_40C	= ATA_UDMA2,	/* udma0-2 */
155
156	/* DMA-related */
157	ATA_PRD_SZ		= 8,
158	ATA_PRD_TBL_SZ		= (ATA_MAX_PRD * ATA_PRD_SZ),
159	ATA_PRD_EOT		= (1 << 31),	/* end-of-table flag */
160
161	ATA_DMA_TABLE_OFS	= 4,
162	ATA_DMA_STATUS		= 2,
163	ATA_DMA_CMD		= 0,
164	ATA_DMA_WR		= (1 << 3),
165	ATA_DMA_START		= (1 << 0),
166	ATA_DMA_INTR		= (1 << 2),
167	ATA_DMA_ERR		= (1 << 1),
168	ATA_DMA_ACTIVE		= (1 << 0),
169
170	/* bits in ATA command block registers */
171	ATA_HOB			= (1 << 7),	/* LBA48 selector */
172	ATA_NIEN		= (1 << 1),	/* disable-irq flag */
173	ATA_LBA			= (1 << 6),	/* LBA28 selector */
174	ATA_DEV1		= (1 << 4),	/* Select Device 1 (slave) */
175	ATA_DEVICE_OBS		= (1 << 7) | (1 << 5), /* obs bits in dev reg */
176	ATA_DEVCTL_OBS		= (1 << 3),	/* obsolete bit in devctl reg */
177	ATA_BUSY		= (1 << 7),	/* BSY status bit */
178	ATA_DRDY		= (1 << 6),	/* device ready */
179	ATA_DF			= (1 << 5),	/* device fault */
180	ATA_DSC			= (1 << 4),	/* drive seek complete */
181	ATA_DRQ			= (1 << 3),	/* data request i/o */
182	ATA_CORR		= (1 << 2),	/* corrected data error */
183	ATA_SENSE		= (1 << 1),	/* sense code available */
184	ATA_ERR			= (1 << 0),	/* have an error */
185	ATA_SRST		= (1 << 2),	/* software reset */
186	ATA_ICRC		= (1 << 7),	/* interface CRC error */
187	ATA_BBK			= ATA_ICRC,	/* pre-EIDE: block marked bad */
188	ATA_UNC			= (1 << 6),	/* uncorrectable media error */
189	ATA_MC			= (1 << 5),	/* media changed */
190	ATA_IDNF		= (1 << 4),	/* ID not found */
191	ATA_MCR			= (1 << 3),	/* media change requested */
192	ATA_ABORTED		= (1 << 2),	/* command aborted */
193	ATA_TRK0NF		= (1 << 1),	/* track 0 not found */
194	ATA_AMNF		= (1 << 0),	/* address mark not found */
195	ATAPI_LFS		= 0xF0,		/* last failed sense */
196	ATAPI_EOM		= ATA_TRK0NF,	/* end of media */
197	ATAPI_ILI		= ATA_AMNF,	/* illegal length indication */
198	ATAPI_IO		= (1 << 1),
199	ATAPI_COD		= (1 << 0),
200
201	/* ATA command block registers */
202	ATA_REG_DATA		= 0x00,
203	ATA_REG_ERR		= 0x01,
204	ATA_REG_NSECT		= 0x02,
205	ATA_REG_LBAL		= 0x03,
206	ATA_REG_LBAM		= 0x04,
207	ATA_REG_LBAH		= 0x05,
208	ATA_REG_DEVICE		= 0x06,
209	ATA_REG_STATUS		= 0x07,
210
211	ATA_REG_FEATURE		= ATA_REG_ERR, /* and their aliases */
212	ATA_REG_CMD		= ATA_REG_STATUS,
213	ATA_REG_BYTEL		= ATA_REG_LBAM,
214	ATA_REG_BYTEH		= ATA_REG_LBAH,
215	ATA_REG_DEVSEL		= ATA_REG_DEVICE,
216	ATA_REG_IRQ		= ATA_REG_NSECT,
217
218	/* ATA device commands */
219	ATA_CMD_DEV_RESET	= 0x08, /* ATAPI device reset */
220	ATA_CMD_CHK_POWER	= 0xE5, /* check power mode */
221	ATA_CMD_STANDBY		= 0xE2, /* place in standby power mode */
222	ATA_CMD_IDLE		= 0xE3, /* place in idle power mode */
223	ATA_CMD_EDD		= 0x90,	/* execute device diagnostic */
224	ATA_CMD_DOWNLOAD_MICRO  = 0x92,
225	ATA_CMD_DOWNLOAD_MICRO_DMA = 0x93,
226	ATA_CMD_NOP		= 0x00,
227	ATA_CMD_FLUSH		= 0xE7,
228	ATA_CMD_FLUSH_EXT	= 0xEA,
229	ATA_CMD_ID_ATA		= 0xEC,
230	ATA_CMD_ID_ATAPI	= 0xA1,
231	ATA_CMD_SERVICE		= 0xA2,
232	ATA_CMD_READ		= 0xC8,
233	ATA_CMD_READ_EXT	= 0x25,
234	ATA_CMD_READ_QUEUED	= 0x26,
235	ATA_CMD_READ_STREAM_EXT	= 0x2B,
236	ATA_CMD_READ_STREAM_DMA_EXT = 0x2A,
237	ATA_CMD_WRITE		= 0xCA,
238	ATA_CMD_WRITE_EXT	= 0x35,
239	ATA_CMD_WRITE_QUEUED	= 0x36,
240	ATA_CMD_WRITE_STREAM_EXT = 0x3B,
241	ATA_CMD_WRITE_STREAM_DMA_EXT = 0x3A,
242	ATA_CMD_WRITE_FUA_EXT	= 0x3D,
243	ATA_CMD_WRITE_QUEUED_FUA_EXT = 0x3E,
244	ATA_CMD_FPDMA_READ	= 0x60,
245	ATA_CMD_FPDMA_WRITE	= 0x61,
246	ATA_CMD_FPDMA_SEND	= 0x64,
247	ATA_CMD_FPDMA_RECV	= 0x65,
248	ATA_CMD_PIO_READ	= 0x20,
249	ATA_CMD_PIO_READ_EXT	= 0x24,
250	ATA_CMD_PIO_WRITE	= 0x30,
251	ATA_CMD_PIO_WRITE_EXT	= 0x34,
252	ATA_CMD_READ_MULTI	= 0xC4,
253	ATA_CMD_READ_MULTI_EXT	= 0x29,
254	ATA_CMD_WRITE_MULTI	= 0xC5,
255	ATA_CMD_WRITE_MULTI_EXT	= 0x39,
256	ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE,
257	ATA_CMD_SET_FEATURES	= 0xEF,
258	ATA_CMD_SET_MULTI	= 0xC6,
259	ATA_CMD_PACKET		= 0xA0,
260	ATA_CMD_VERIFY		= 0x40,
261	ATA_CMD_VERIFY_EXT	= 0x42,
262	ATA_CMD_WRITE_UNCORR_EXT = 0x45,
263	ATA_CMD_STANDBYNOW1	= 0xE0,
264	ATA_CMD_IDLEIMMEDIATE	= 0xE1,
265	ATA_CMD_SLEEP		= 0xE6,
266	ATA_CMD_INIT_DEV_PARAMS	= 0x91,
267	ATA_CMD_READ_NATIVE_MAX	= 0xF8,
268	ATA_CMD_READ_NATIVE_MAX_EXT = 0x27,
269	ATA_CMD_SET_MAX		= 0xF9,
270	ATA_CMD_SET_MAX_EXT	= 0x37,
271	ATA_CMD_READ_LOG_EXT	= 0x2F,
272	ATA_CMD_WRITE_LOG_EXT	= 0x3F,
273	ATA_CMD_READ_LOG_DMA_EXT = 0x47,
274	ATA_CMD_WRITE_LOG_DMA_EXT = 0x57,
275	ATA_CMD_TRUSTED_NONDATA	= 0x5B,
276	ATA_CMD_TRUSTED_RCV	= 0x5C,
277	ATA_CMD_TRUSTED_RCV_DMA = 0x5D,
278	ATA_CMD_TRUSTED_SND	= 0x5E,
279	ATA_CMD_TRUSTED_SND_DMA = 0x5F,
280	ATA_CMD_PMP_READ	= 0xE4,
281	ATA_CMD_PMP_READ_DMA	= 0xE9,
282	ATA_CMD_PMP_WRITE	= 0xE8,
283	ATA_CMD_PMP_WRITE_DMA	= 0xEB,
284	ATA_CMD_CONF_OVERLAY	= 0xB1,
285	ATA_CMD_SEC_SET_PASS	= 0xF1,
286	ATA_CMD_SEC_UNLOCK	= 0xF2,
287	ATA_CMD_SEC_ERASE_PREP	= 0xF3,
288	ATA_CMD_SEC_ERASE_UNIT	= 0xF4,
289	ATA_CMD_SEC_FREEZE_LOCK	= 0xF5,
290	ATA_CMD_SEC_DISABLE_PASS = 0xF6,
291	ATA_CMD_CONFIG_STREAM	= 0x51,
292	ATA_CMD_SMART		= 0xB0,
293	ATA_CMD_MEDIA_LOCK	= 0xDE,
294	ATA_CMD_MEDIA_UNLOCK	= 0xDF,
295	ATA_CMD_DSM		= 0x06,
296	ATA_CMD_CHK_MED_CRD_TYP = 0xD1,
297	ATA_CMD_CFA_REQ_EXT_ERR = 0x03,
298	ATA_CMD_CFA_WRITE_NE	= 0x38,
299	ATA_CMD_CFA_TRANS_SECT	= 0x87,
300	ATA_CMD_CFA_ERASE	= 0xC0,
301	ATA_CMD_CFA_WRITE_MULT_NE = 0xCD,
302	ATA_CMD_REQ_SENSE_DATA  = 0x0B,
303	ATA_CMD_SANITIZE_DEVICE = 0xB4,
304
305	/* marked obsolete in the ATA/ATAPI-7 spec */
306	ATA_CMD_RESTORE		= 0x10,
307
308	/* Subcmds for ATA_CMD_FPDMA_SEND */
309	ATA_SUBCMD_FPDMA_SEND_DSM            = 0x00,
310	ATA_SUBCMD_FPDMA_SEND_WR_LOG_DMA_EXT = 0x02,
311
312	/* READ_LOG_EXT pages */
313	ATA_LOG_SATA_NCQ	= 0x10,
314	ATA_LOG_NCQ_SEND_RECV	  = 0x13,
315	ATA_LOG_SATA_ID_DEV_DATA  = 0x30,
316	ATA_LOG_SATA_SETTINGS	  = 0x08,
317	ATA_LOG_DEVSLP_OFFSET	  = 0x30,
318	ATA_LOG_DEVSLP_SIZE	  = 0x08,
319	ATA_LOG_DEVSLP_MDAT	  = 0x00,
320	ATA_LOG_DEVSLP_MDAT_MASK  = 0x1F,
321	ATA_LOG_DEVSLP_DETO	  = 0x01,
322	ATA_LOG_DEVSLP_VALID	  = 0x07,
323	ATA_LOG_DEVSLP_VALID_MASK = 0x80,
324
325	/* NCQ send and receive log */
326	ATA_LOG_NCQ_SEND_RECV_SUBCMDS_OFFSET	= 0x00,
327	ATA_LOG_NCQ_SEND_RECV_SUBCMDS_DSM	= (1 << 0),
328	ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET	= 0x04,
329	ATA_LOG_NCQ_SEND_RECV_DSM_TRIM		= (1 << 0),
330	ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET	= 0x08,
331	ATA_LOG_NCQ_SEND_RECV_WR_LOG_OFFSET	= 0x0C,
332	ATA_LOG_NCQ_SEND_RECV_SIZE		= 0x10,
333
334	/* READ/WRITE LONG (obsolete) */
335	ATA_CMD_READ_LONG	= 0x22,
336	ATA_CMD_READ_LONG_ONCE	= 0x23,
337	ATA_CMD_WRITE_LONG	= 0x32,
338	ATA_CMD_WRITE_LONG_ONCE	= 0x33,
339
340	/* SETFEATURES stuff */
341	SETFEATURES_XFER	= 0x03,
342	XFER_UDMA_7		= 0x47,
343	XFER_UDMA_6		= 0x46,
344	XFER_UDMA_5		= 0x45,
345	XFER_UDMA_4		= 0x44,
346	XFER_UDMA_3		= 0x43,
347	XFER_UDMA_2		= 0x42,
348	XFER_UDMA_1		= 0x41,
349	XFER_UDMA_0		= 0x40,
350	XFER_MW_DMA_4		= 0x24,	/* CFA only */
351	XFER_MW_DMA_3		= 0x23,	/* CFA only */
352	XFER_MW_DMA_2		= 0x22,
353	XFER_MW_DMA_1		= 0x21,
354	XFER_MW_DMA_0		= 0x20,
355	XFER_SW_DMA_2		= 0x12,
356	XFER_SW_DMA_1		= 0x11,
357	XFER_SW_DMA_0		= 0x10,
358	XFER_PIO_6		= 0x0E,	/* CFA only */
359	XFER_PIO_5		= 0x0D,	/* CFA only */
360	XFER_PIO_4		= 0x0C,
361	XFER_PIO_3		= 0x0B,
362	XFER_PIO_2		= 0x0A,
363	XFER_PIO_1		= 0x09,
364	XFER_PIO_0		= 0x08,
365	XFER_PIO_SLOW		= 0x00,
366
367	SETFEATURES_WC_ON	= 0x02, /* Enable write cache */
368	SETFEATURES_WC_OFF	= 0x82, /* Disable write cache */
369
370	/* Enable/Disable Automatic Acoustic Management */
371	SETFEATURES_AAM_ON	= 0x42,
372	SETFEATURES_AAM_OFF	= 0xC2,
373
374	SETFEATURES_SPINUP	= 0x07, /* Spin-up drive */
375
376	SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */
377	SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */
378
379	/* SETFEATURE Sector counts for SATA features */
380	SATA_FPDMA_OFFSET	= 0x01,	/* FPDMA non-zero buffer offsets */
381	SATA_FPDMA_AA		= 0x02, /* FPDMA Setup FIS Auto-Activate */
382	SATA_DIPM		= 0x03,	/* Device Initiated Power Management */
383	SATA_FPDMA_IN_ORDER	= 0x04,	/* FPDMA in-order data delivery */
384	SATA_AN			= 0x05,	/* Asynchronous Notification */
385	SATA_SSP		= 0x06,	/* Software Settings Preservation */
386	SATA_DEVSLP		= 0x09,	/* Device Sleep */
387
388	/* feature values for SET_MAX */
389	ATA_SET_MAX_ADDR	= 0x00,
390	ATA_SET_MAX_PASSWD	= 0x01,
391	ATA_SET_MAX_LOCK	= 0x02,
392	ATA_SET_MAX_UNLOCK	= 0x03,
393	ATA_SET_MAX_FREEZE_LOCK	= 0x04,
394
395	/* feature values for DEVICE CONFIGURATION OVERLAY */
396	ATA_DCO_RESTORE		= 0xC0,
397	ATA_DCO_FREEZE_LOCK	= 0xC1,
398	ATA_DCO_IDENTIFY	= 0xC2,
399	ATA_DCO_SET		= 0xC3,
400
401	/* feature values for SMART */
402	ATA_SMART_ENABLE	= 0xD8,
403	ATA_SMART_READ_VALUES	= 0xD0,
404	ATA_SMART_READ_THRESHOLDS = 0xD1,
405
406	/* feature values for Data Set Management */
407	ATA_DSM_TRIM		= 0x01,
408
409	/* password used in LBA Mid / LBA High for executing SMART commands */
410	ATA_SMART_LBAM_PASS	= 0x4F,
411	ATA_SMART_LBAH_PASS	= 0xC2,
412
413	/* ATAPI stuff */
414	ATAPI_PKT_DMA		= (1 << 0),
415	ATAPI_DMADIR		= (1 << 2),	/* ATAPI data dir:
416						   0=to device, 1=to host */
417	ATAPI_CDB_LEN		= 16,
418
419	/* PMP stuff */
420	SATA_PMP_MAX_PORTS	= 15,
421	SATA_PMP_CTRL_PORT	= 15,
422
423	SATA_PMP_GSCR_DWORDS	= 128,
424	SATA_PMP_GSCR_PROD_ID	= 0,
425	SATA_PMP_GSCR_REV	= 1,
426	SATA_PMP_GSCR_PORT_INFO	= 2,
427	SATA_PMP_GSCR_ERROR	= 32,
428	SATA_PMP_GSCR_ERROR_EN	= 33,
429	SATA_PMP_GSCR_FEAT	= 64,
430	SATA_PMP_GSCR_FEAT_EN	= 96,
431
432	SATA_PMP_PSCR_STATUS	= 0,
433	SATA_PMP_PSCR_ERROR	= 1,
434	SATA_PMP_PSCR_CONTROL	= 2,
435
436	SATA_PMP_FEAT_BIST	= (1 << 0),
437	SATA_PMP_FEAT_PMREQ	= (1 << 1),
438	SATA_PMP_FEAT_DYNSSC	= (1 << 2),
439	SATA_PMP_FEAT_NOTIFY	= (1 << 3),
440
441	/* cable types */
442	ATA_CBL_NONE		= 0,
443	ATA_CBL_PATA40		= 1,
444	ATA_CBL_PATA80		= 2,
445	ATA_CBL_PATA40_SHORT	= 3,	/* 40 wire cable to high UDMA spec */
446	ATA_CBL_PATA_UNK	= 4,	/* don't know, maybe 80c? */
447	ATA_CBL_PATA_IGN	= 5,	/* don't know, ignore cable handling */
448	ATA_CBL_SATA		= 6,
449
450	/* SATA Status and Control Registers */
451	SCR_STATUS		= 0,
452	SCR_ERROR		= 1,
453	SCR_CONTROL		= 2,
454	SCR_ACTIVE		= 3,
455	SCR_NOTIFICATION	= 4,
456
457	/* SError bits */
458	SERR_DATA_RECOVERED	= (1 << 0), /* recovered data error */
459	SERR_COMM_RECOVERED	= (1 << 1), /* recovered comm failure */
460	SERR_DATA		= (1 << 8), /* unrecovered data error */
461	SERR_PERSISTENT		= (1 << 9), /* persistent data/comm error */
462	SERR_PROTOCOL		= (1 << 10), /* protocol violation */
463	SERR_INTERNAL		= (1 << 11), /* host internal error */
464	SERR_PHYRDY_CHG		= (1 << 16), /* PHY RDY changed */
465	SERR_PHY_INT_ERR	= (1 << 17), /* PHY internal error */
466	SERR_COMM_WAKE		= (1 << 18), /* Comm wake */
467	SERR_10B_8B_ERR		= (1 << 19), /* 10b to 8b decode error */
468	SERR_DISPARITY		= (1 << 20), /* Disparity */
469	SERR_CRC		= (1 << 21), /* CRC error */
470	SERR_HANDSHAKE		= (1 << 22), /* Handshake error */
471	SERR_LINK_SEQ_ERR	= (1 << 23), /* Link sequence error */
472	SERR_TRANS_ST_ERROR	= (1 << 24), /* Transport state trans. error */
473	SERR_UNRECOG_FIS	= (1 << 25), /* Unrecognized FIS */
474	SERR_DEV_XCHG		= (1 << 26), /* device exchanged */
475};
476
477enum ata_tf_protocols {
478	/* ATA taskfile protocols */
479	ATA_PROT_UNKNOWN,	/* unknown/invalid */
480	ATA_PROT_NODATA,	/* no data */
481	ATA_PROT_PIO,		/* PIO data xfer */
482	ATA_PROT_DMA,		/* DMA */
483	ATA_PROT_NCQ,		/* NCQ */
484	ATAPI_PROT_NODATA,	/* packet command, no data */
485	ATAPI_PROT_PIO,		/* packet command, PIO data xfer*/
486	ATAPI_PROT_DMA,		/* packet command with special DMA sauce */
487};
488
489enum ata_ioctls {
490	ATA_IOC_GET_IO32	= 0x309, /* HDIO_GET_32BIT */
491	ATA_IOC_SET_IO32	= 0x324, /* HDIO_SET_32BIT */
492};
493
494/* core structures */
495
496struct ata_bmdma_prd {
497	__le32			addr;
498	__le32			flags_len;
499};
500
501/*
502 * id tests
503 */
504#define ata_id_is_ata(id)	(((id)[ATA_ID_CONFIG] & (1 << 15)) == 0)
505#define ata_id_has_lba(id)	((id)[ATA_ID_CAPABILITY] & (1 << 9))
506#define ata_id_has_dma(id)	((id)[ATA_ID_CAPABILITY] & (1 << 8))
507#define ata_id_has_ncq(id)	((id)[ATA_ID_SATA_CAPABILITY] & (1 << 8))
508#define ata_id_queue_depth(id)	(((id)[ATA_ID_QUEUE_DEPTH] & 0x1f) + 1)
509#define ata_id_removable(id)	((id)[ATA_ID_CONFIG] & (1 << 7))
510#define ata_id_has_atapi_AN(id)	\
511	((((id)[ATA_ID_SATA_CAPABILITY] != 0x0000) && \
512	  ((id)[ATA_ID_SATA_CAPABILITY] != 0xffff)) && \
513	 ((id)[ATA_ID_FEATURE_SUPP] & (1 << 5)))
514#define ata_id_has_fpdma_aa(id)	\
515	((((id)[ATA_ID_SATA_CAPABILITY] != 0x0000) && \
516	  ((id)[ATA_ID_SATA_CAPABILITY] != 0xffff)) && \
517	 ((id)[ATA_ID_FEATURE_SUPP] & (1 << 2)))
518#define ata_id_iordy_disable(id) ((id)[ATA_ID_CAPABILITY] & (1 << 10))
519#define ata_id_has_iordy(id) ((id)[ATA_ID_CAPABILITY] & (1 << 11))
520#define ata_id_u32(id,n)	\
521	(((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)]))
522#define ata_id_u64(id,n)	\
523	( ((u64) (id)[(n) + 3] << 48) |	\
524	  ((u64) (id)[(n) + 2] << 32) |	\
525	  ((u64) (id)[(n) + 1] << 16) |	\
526	  ((u64) (id)[(n) + 0]) )
527
528#define ata_id_cdb_intr(id)	(((id)[ATA_ID_CONFIG] & 0x60) == 0x20)
529#define ata_id_has_da(id)	((id)[ATA_ID_SATA_CAPABILITY_2] & (1 << 4))
530#define ata_id_has_devslp(id)	((id)[ATA_ID_FEATURE_SUPP] & (1 << 8))
531
532static inline bool ata_id_has_hipm(const u16 *id)
533{
534	u16 val = id[ATA_ID_SATA_CAPABILITY];
535
536	if (val == 0 || val == 0xffff)
537		return false;
538
539	return val & (1 << 9);
540}
541
542static inline bool ata_id_has_dipm(const u16 *id)
543{
544	u16 val = id[ATA_ID_FEATURE_SUPP];
545
546	if (val == 0 || val == 0xffff)
547		return false;
548
549	return val & (1 << 3);
550}
551
552
553static inline bool ata_id_has_fua(const u16 *id)
554{
555	if ((id[ATA_ID_CFSSE] & 0xC000) != 0x4000)
556		return false;
557	return id[ATA_ID_CFSSE] & (1 << 6);
558}
559
560static inline bool ata_id_has_flush(const u16 *id)
561{
562	if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
563		return false;
564	return id[ATA_ID_COMMAND_SET_2] & (1 << 12);
565}
566
567static inline bool ata_id_flush_enabled(const u16 *id)
568{
569	if (ata_id_has_flush(id) == 0)
570		return false;
571	if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
572		return false;
573	return id[ATA_ID_CFS_ENABLE_2] & (1 << 12);
574}
575
576static inline bool ata_id_has_flush_ext(const u16 *id)
577{
578	if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
579		return false;
580	return id[ATA_ID_COMMAND_SET_2] & (1 << 13);
581}
582
583static inline bool ata_id_flush_ext_enabled(const u16 *id)
584{
585	if (ata_id_has_flush_ext(id) == 0)
586		return false;
587	if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
588		return false;
589	/*
590	 * some Maxtor disks have bit 13 defined incorrectly
591	 * so check bit 10 too
592	 */
593	return (id[ATA_ID_CFS_ENABLE_2] & 0x2400) == 0x2400;
594}
595
596static inline u32 ata_id_logical_sector_size(const u16 *id)
597{
598	/* T13/1699-D Revision 6a, Sep 6, 2008. Page 128.
599	 * IDENTIFY DEVICE data, word 117-118.
600	 * 0xd000 ignores bit 13 (logical:physical > 1)
601	 */
602	if ((id[ATA_ID_SECTOR_SIZE] & 0xd000) == 0x5000)
603		return (((id[ATA_ID_LOGICAL_SECTOR_SIZE+1] << 16)
604			 + id[ATA_ID_LOGICAL_SECTOR_SIZE]) * sizeof(u16)) ;
605	return ATA_SECT_SIZE;
606}
607
608static inline u8 ata_id_log2_per_physical_sector(const u16 *id)
609{
610	/* T13/1699-D Revision 6a, Sep 6, 2008. Page 128.
611	 * IDENTIFY DEVICE data, word 106.
612	 * 0xe000 ignores bit 12 (logical sector > 512 bytes)
613	 */
614	if ((id[ATA_ID_SECTOR_SIZE] & 0xe000) == 0x6000)
615		return (id[ATA_ID_SECTOR_SIZE] & 0xf);
616	return 0;
617}
618
619/* Offset of logical sectors relative to physical sectors.
620 *
621 * If device has more than one logical sector per physical sector
622 * (aka 512 byte emulation), vendors might offset the "sector 0" address
623 * so sector 63 is "naturally aligned" - e.g. FAT partition table.
624 * This avoids Read/Mod/Write penalties when using FAT partition table
625 * and updating "well aligned" (FS perspective) physical sectors on every
626 * transaction.
627 */
628static inline u16 ata_id_logical_sector_offset(const u16 *id,
629	 u8 log2_per_phys)
630{
631	u16 word_209 = id[209];
632
633	if ((log2_per_phys > 1) && (word_209 & 0xc000) == 0x4000) {
634		u16 first = word_209 & 0x3fff;
635		if (first > 0)
636			return (1 << log2_per_phys) - first;
637	}
638	return 0;
639}
640
641static inline bool ata_id_has_lba48(const u16 *id)
642{
643	if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
644		return false;
645	if (!ata_id_u64(id, ATA_ID_LBA_CAPACITY_2))
646		return false;
647	return id[ATA_ID_COMMAND_SET_2] & (1 << 10);
648}
649
650static inline bool ata_id_lba48_enabled(const u16 *id)
651{
652	if (ata_id_has_lba48(id) == 0)
653		return false;
654	if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
655		return false;
656	return id[ATA_ID_CFS_ENABLE_2] & (1 << 10);
657}
658
659static inline bool ata_id_hpa_enabled(const u16 *id)
660{
661	/* Yes children, word 83 valid bits cover word 82 data */
662	if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
663		return false;
664	/* And 87 covers 85-87 */
665	if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
666		return false;
667	/* Check command sets enabled as well as supported */
668	if ((id[ATA_ID_CFS_ENABLE_1] & (1 << 10)) == 0)
669		return false;
670	return id[ATA_ID_COMMAND_SET_1] & (1 << 10);
671}
672
673static inline bool ata_id_has_wcache(const u16 *id)
674{
675	/* Yes children, word 83 valid bits cover word 82 data */
676	if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
677		return false;
678	return id[ATA_ID_COMMAND_SET_1] & (1 << 5);
679}
680
681static inline bool ata_id_has_pm(const u16 *id)
682{
683	if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
684		return false;
685	return id[ATA_ID_COMMAND_SET_1] & (1 << 3);
686}
687
688static inline bool ata_id_rahead_enabled(const u16 *id)
689{
690	if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
691		return false;
692	return id[ATA_ID_CFS_ENABLE_1] & (1 << 6);
693}
694
695static inline bool ata_id_wcache_enabled(const u16 *id)
696{
697	if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
698		return false;
699	return id[ATA_ID_CFS_ENABLE_1] & (1 << 5);
700}
701
702static inline bool ata_id_has_read_log_dma_ext(const u16 *id)
703{
704	/* Word 86 must have bit 15 set */
705	if (!(id[ATA_ID_CFS_ENABLE_2] & (1 << 15)))
706		return false;
707
708	/* READ LOG DMA EXT support can be signaled either from word 119
709	 * or from word 120. The format is the same for both words: Bit
710	 * 15 must be cleared, bit 14 set and bit 3 set.
711	 */
712	if ((id[ATA_ID_COMMAND_SET_3] & 0xC008) == 0x4008 ||
713	    (id[ATA_ID_COMMAND_SET_4] & 0xC008) == 0x4008)
714		return true;
715
716	return false;
717}
718
719/**
720 *	ata_id_major_version	-	get ATA level of drive
721 *	@id: Identify data
722 *
723 *	Caveats:
724 *		ATA-1 considers identify optional
725 *		ATA-2 introduces mandatory identify
726 *		ATA-3 introduces word 80 and accurate reporting
727 *
728 *	The practical impact of this is that ata_id_major_version cannot
729 *	reliably report on drives below ATA3.
730 */
731
732static inline unsigned int ata_id_major_version(const u16 *id)
733{
734	unsigned int mver;
735
736	if (id[ATA_ID_MAJOR_VER] == 0xFFFF)
737		return 0;
738
739	for (mver = 14; mver >= 1; mver--)
740		if (id[ATA_ID_MAJOR_VER] & (1 << mver))
741			break;
742	return mver;
743}
744
745static inline bool ata_id_is_sata(const u16 *id)
746{
747	/*
748	 * See if word 93 is 0 AND drive is at least ATA-5 compatible
749	 * verifying that word 80 by casting it to a signed type --
750	 * this trick allows us to filter out the reserved values of
751	 * 0x0000 and 0xffff along with the earlier ATA revisions...
752	 */
753	if (id[ATA_ID_HW_CONFIG] == 0 && (short)id[ATA_ID_MAJOR_VER] >= 0x0020)
754		return true;
755	return false;
756}
757
758static inline bool ata_id_has_tpm(const u16 *id)
759{
760	/* The TPM bits are only valid on ATA8 */
761	if (ata_id_major_version(id) < 8)
762		return false;
763	if ((id[48] & 0xC000) != 0x4000)
764		return false;
765	return id[48] & (1 << 0);
766}
767
768static inline bool ata_id_has_dword_io(const u16 *id)
769{
770	/* ATA 8 reuses this flag for "trusted" computing */
771	if (ata_id_major_version(id) > 7)
772		return false;
773	return id[ATA_ID_DWORD_IO] & (1 << 0);
774}
775
776static inline bool ata_id_has_unload(const u16 *id)
777{
778	if (ata_id_major_version(id) >= 7 &&
779	    (id[ATA_ID_CFSSE] & 0xC000) == 0x4000 &&
780	    id[ATA_ID_CFSSE] & (1 << 13))
781		return true;
782	return false;
783}
784
785static inline bool ata_id_has_wwn(const u16 *id)
786{
787	return (id[ATA_ID_CSF_DEFAULT] & 0xC100) == 0x4100;
788}
789
790static inline int ata_id_form_factor(const u16 *id)
791{
792	u16 val = id[168];
793
794	if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff)
795		return 0;
796
797	val &= 0xf;
798
799	if (val > 5)
800		return 0;
801
802	return val;
803}
804
805static inline int ata_id_rotation_rate(const u16 *id)
806{
807	u16 val = id[217];
808
809	if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff)
810		return 0;
811
812	if (val > 1 && val < 0x401)
813		return 0;
814
815	return val;
816}
817
818static inline bool ata_id_has_ncq_send_and_recv(const u16 *id)
819{
820	return id[ATA_ID_SATA_CAPABILITY_2] & BIT(6);
821}
822
823static inline bool ata_id_has_trim(const u16 *id)
824{
825	if (ata_id_major_version(id) >= 7 &&
826	    (id[ATA_ID_DATA_SET_MGMT] & 1))
827		return true;
828	return false;
829}
830
831static inline bool ata_id_has_zero_after_trim(const u16 *id)
832{
833	/* DSM supported, deterministic read, and read zero after trim set */
834	if (ata_id_has_trim(id) &&
835	    (id[ATA_ID_ADDITIONAL_SUPP] & 0x4020) == 0x4020)
836		return true;
837
838	return false;
839}
840
841static inline bool ata_id_current_chs_valid(const u16 *id)
842{
843	/* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command
844	   has not been issued to the device then the values of
845	   id[ATA_ID_CUR_CYLS] to id[ATA_ID_CUR_SECTORS] are vendor specific. */
846	return (id[ATA_ID_FIELD_VALID] & 1) && /* Current translation valid */
847		id[ATA_ID_CUR_CYLS] &&  /* cylinders in current translation */
848		id[ATA_ID_CUR_HEADS] &&  /* heads in current translation */
849		id[ATA_ID_CUR_HEADS] <= 16 &&
850		id[ATA_ID_CUR_SECTORS];    /* sectors in current translation */
851}
852
853static inline bool ata_id_is_cfa(const u16 *id)
854{
855	if ((id[ATA_ID_CONFIG] == 0x848A) ||	/* Traditional CF */
856	    (id[ATA_ID_CONFIG] == 0x844A))	/* Delkin Devices CF */
857		return true;
858	/*
859	 * CF specs don't require specific value in the word 0 anymore and yet
860	 * they forbid to report the ATA version in the word 80 and require the
861	 * CFA feature set support to be indicated in the word 83 in this case.
862	 * Unfortunately, some cards only follow either of this requirements,
863	 * and while those that don't indicate CFA feature support need some
864	 * sort of quirk list, it seems impractical for the ones that do...
865	 */
866	return (id[ATA_ID_COMMAND_SET_2] & 0xC004) == 0x4004;
867}
868
869static inline bool ata_id_is_ssd(const u16 *id)
870{
871	return id[ATA_ID_ROT_SPEED] == 0x01;
872}
873
874static inline bool ata_id_pio_need_iordy(const u16 *id, const u8 pio)
875{
876	/* CF spec. r4.1 Table 22 says no IORDY on PIO5 and PIO6. */
877	if (pio > 4 && ata_id_is_cfa(id))
878		return false;
879	/* For PIO3 and higher it is mandatory. */
880	if (pio > 2)
881		return true;
882	/* Turn it on when possible. */
883	return ata_id_has_iordy(id);
884}
885
886static inline bool ata_drive_40wire(const u16 *dev_id)
887{
888	if (ata_id_is_sata(dev_id))
889		return false;	/* SATA */
890	if ((dev_id[ATA_ID_HW_CONFIG] & 0xE000) == 0x6000)
891		return false;	/* 80 wire */
892	return true;
893}
894
895static inline bool ata_drive_40wire_relaxed(const u16 *dev_id)
896{
897	if ((dev_id[ATA_ID_HW_CONFIG] & 0x2000) == 0x2000)
898		return false;	/* 80 wire */
899	return true;
900}
901
902static inline int atapi_cdb_len(const u16 *dev_id)
903{
904	u16 tmp = dev_id[ATA_ID_CONFIG] & 0x3;
905	switch (tmp) {
906	case 0:		return 12;
907	case 1:		return 16;
908	default:	return -1;
909	}
910}
911
912static inline int atapi_command_packet_set(const u16 *dev_id)
913{
914	return (dev_id[ATA_ID_CONFIG] >> 8) & 0x1f;
915}
916
917static inline bool atapi_id_dmadir(const u16 *dev_id)
918{
919	return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000);
920}
921
922/*
923 * ata_id_is_lba_capacity_ok() performs a sanity check on
924 * the claimed LBA capacity value for the device.
925 *
926 * Returns 1 if LBA capacity looks sensible, 0 otherwise.
927 *
928 * It is called only once for each device.
929 */
930static inline bool ata_id_is_lba_capacity_ok(u16 *id)
931{
932	unsigned long lba_sects, chs_sects, head, tail;
933
934	/* No non-LBA info .. so valid! */
935	if (id[ATA_ID_CYLS] == 0)
936		return true;
937
938	lba_sects = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
939
940	/*
941	 * The ATA spec tells large drives to return
942	 * C/H/S = 16383/16/63 independent of their size.
943	 * Some drives can be jumpered to use 15 heads instead of 16.
944	 * Some drives can be jumpered to use 4092 cyls instead of 16383.
945	 */
946	if ((id[ATA_ID_CYLS] == 16383 ||
947	     (id[ATA_ID_CYLS] == 4092 && id[ATA_ID_CUR_CYLS] == 16383)) &&
948	    id[ATA_ID_SECTORS] == 63 &&
949	    (id[ATA_ID_HEADS] == 15 || id[ATA_ID_HEADS] == 16) &&
950	    (lba_sects >= 16383 * 63 * id[ATA_ID_HEADS]))
951		return true;
952
953	chs_sects = id[ATA_ID_CYLS] * id[ATA_ID_HEADS] * id[ATA_ID_SECTORS];
954
955	/* perform a rough sanity check on lba_sects: within 10% is OK */
956	if (lba_sects - chs_sects < chs_sects/10)
957		return true;
958
959	/* some drives have the word order reversed */
960	head = (lba_sects >> 16) & 0xffff;
961	tail = lba_sects & 0xffff;
962	lba_sects = head | (tail << 16);
963
964	if (lba_sects - chs_sects < chs_sects/10) {
965		*(__le32 *)&id[ATA_ID_LBA_CAPACITY] = __cpu_to_le32(lba_sects);
966		return true;	/* LBA capacity is (now) good */
967	}
968
969	return false;	/* LBA capacity value may be bad */
970}
971
972static inline void ata_id_to_hd_driveid(u16 *id)
973{
974#ifdef __BIG_ENDIAN
975	/* accessed in struct hd_driveid as 8-bit values */
976	id[ATA_ID_MAX_MULTSECT]	 = __cpu_to_le16(id[ATA_ID_MAX_MULTSECT]);
977	id[ATA_ID_CAPABILITY]	 = __cpu_to_le16(id[ATA_ID_CAPABILITY]);
978	id[ATA_ID_OLD_PIO_MODES] = __cpu_to_le16(id[ATA_ID_OLD_PIO_MODES]);
979	id[ATA_ID_OLD_DMA_MODES] = __cpu_to_le16(id[ATA_ID_OLD_DMA_MODES]);
980	id[ATA_ID_MULTSECT]	 = __cpu_to_le16(id[ATA_ID_MULTSECT]);
981
982	/* as 32-bit values */
983	*(u32 *)&id[ATA_ID_LBA_CAPACITY] = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
984	*(u32 *)&id[ATA_ID_SPG]		 = ata_id_u32(id, ATA_ID_SPG);
985
986	/* as 64-bit value */
987	*(u64 *)&id[ATA_ID_LBA_CAPACITY_2] =
988		ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
989#endif
990}
991
992/*
993 * Write LBA Range Entries to the buffer that will cover the extent from
994 * sector to sector + count.  This is used for TRIM and for ADD LBA(S)
995 * TO NV CACHE PINNED SET.
996 */
997static inline unsigned ata_set_lba_range_entries(void *_buffer,
998		unsigned buf_size, u64 sector, unsigned long count)
999{
1000	__le64 *buffer = _buffer;
1001	unsigned i = 0, used_bytes;
1002
1003	while (i < buf_size / 8 ) { /* 6-byte LBA + 2-byte range per entry */
1004		u64 entry = sector |
1005			((u64)(count > 0xffff ? 0xffff : count) << 48);
1006		buffer[i++] = __cpu_to_le64(entry);
1007		if (count <= 0xffff)
1008			break;
1009		count -= 0xffff;
1010		sector += 0xffff;
1011	}
1012
1013	used_bytes = ALIGN(i * 8, 512);
1014	memset(buffer + i, 0, used_bytes - i * 8);
1015	return used_bytes;
1016}
1017
1018static inline bool ata_ok(u8 status)
1019{
1020	return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR))
1021			== ATA_DRDY);
1022}
1023
1024static inline bool lba_28_ok(u64 block, u32 n_block)
1025{
1026	/* check the ending block number: must be LESS THAN 0x0fffffff */
1027	return ((block + n_block) < ((1 << 28) - 1)) && (n_block <= 256);
1028}
1029
1030static inline bool lba_48_ok(u64 block, u32 n_block)
1031{
1032	/* check the ending block number */
1033	return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536);
1034}
1035
1036#define sata_pmp_gscr_vendor(gscr)	((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff)
1037#define sata_pmp_gscr_devid(gscr)	((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16)
1038#define sata_pmp_gscr_rev(gscr)		(((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff)
1039#define sata_pmp_gscr_ports(gscr)	((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf)
1040
1041#endif /* __LINUX_ATA_H__ */
1042