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drm/i915: increase the tries for HDMI hotplug live status checking
[linux-2.6/btrfs-unstable.git] / drivers / ata / ahci.h
blob45586c1dbbdc1e225947c09e200bf5b2c2296a15
1 /*
2 * ahci.h - Common AHCI SATA definitions and declarations
3 *
4 * Maintained by: Tejun Heo <tj@kernel.org>
5 * Please ALWAYS copy linux-ide@vger.kernel.org
6 * on emails.
7 *
8 * Copyright 2004-2005 Red Hat, Inc.
9 *
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2, or (at your option)
14 * any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; see the file COPYING. If not, write to
23 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
24 *
25 *
26 * libata documentation is available via 'make {ps|pdf}docs',
27 * as Documentation/DocBook/libata.*
28 *
29 * AHCI hardware documentation:
30 * http://www.intel.com/technology/serialata/pdf/rev1_0.pdf
31 * http://www.intel.com/technology/serialata/pdf/rev1_1.pdf
32 *
33 */
34
35 #ifndef _AHCI_H
36 #define _AHCI_H
37
38 #include <linux/clk.h>
39 #include <linux/libata.h>
40 #include <linux/phy/phy.h>
41 #include <linux/regulator/consumer.h>
42
43 /* Enclosure Management Control */
44 #define EM_CTRL_MSG_TYPE 0x000f0000
45
46 /* Enclosure Management LED Message Type */
47 #define EM_MSG_LED_HBA_PORT 0x0000000f
48 #define EM_MSG_LED_PMP_SLOT 0x0000ff00
49 #define EM_MSG_LED_VALUE 0xffff0000
50 #define EM_MSG_LED_VALUE_ACTIVITY 0x00070000
51 #define EM_MSG_LED_VALUE_OFF 0xfff80000
52 #define EM_MSG_LED_VALUE_ON 0x00010000
53
54 enum {
55 AHCI_MAX_PORTS = 32,
56 AHCI_MAX_CLKS = 5,
57 AHCI_MAX_SG = 168, /* hardware max is 64K */
58 AHCI_DMA_BOUNDARY = 0xffffffff,
59 AHCI_MAX_CMDS = 32,
60 AHCI_CMD_SZ = 32,
61 AHCI_CMD_SLOT_SZ = AHCI_MAX_CMDS * AHCI_CMD_SZ,
62 AHCI_RX_FIS_SZ = 256,
63 AHCI_CMD_TBL_CDB = 0x40,
64 AHCI_CMD_TBL_HDR_SZ = 0x80,
65 AHCI_CMD_TBL_SZ = AHCI_CMD_TBL_HDR_SZ + (AHCI_MAX_SG * 16),
66 AHCI_CMD_TBL_AR_SZ = AHCI_CMD_TBL_SZ * AHCI_MAX_CMDS,
67 AHCI_PORT_PRIV_DMA_SZ = AHCI_CMD_SLOT_SZ + AHCI_CMD_TBL_AR_SZ +
68 AHCI_RX_FIS_SZ,
69 AHCI_PORT_PRIV_FBS_DMA_SZ = AHCI_CMD_SLOT_SZ +
70 AHCI_CMD_TBL_AR_SZ +
71 (AHCI_RX_FIS_SZ * 16),
72 AHCI_IRQ_ON_SG = (1 << 31),
73 AHCI_CMD_ATAPI = (1 << 5),
74 AHCI_CMD_WRITE = (1 << 6),
75 AHCI_CMD_PREFETCH = (1 << 7),
76 AHCI_CMD_RESET = (1 << 8),
77 AHCI_CMD_CLR_BUSY = (1 << 10),
78
79 RX_FIS_PIO_SETUP = 0x20, /* offset of PIO Setup FIS data */
80 RX_FIS_D2H_REG = 0x40, /* offset of D2H Register FIS data */
81 RX_FIS_SDB = 0x58, /* offset of SDB FIS data */
82 RX_FIS_UNK = 0x60, /* offset of Unknown FIS data */
83
84 /* global controller registers */
85 HOST_CAP = 0x00, /* host capabilities */
86 HOST_CTL = 0x04, /* global host control */
87 HOST_IRQ_STAT = 0x08, /* interrupt status */
88 HOST_PORTS_IMPL = 0x0c, /* bitmap of implemented ports */
89 HOST_VERSION = 0x10, /* AHCI spec. version compliancy */
90 HOST_EM_LOC = 0x1c, /* Enclosure Management location */
91 HOST_EM_CTL = 0x20, /* Enclosure Management Control */
92 HOST_CAP2 = 0x24, /* host capabilities, extended */
93
94 /* HOST_CTL bits */
95 HOST_RESET = (1 << 0), /* reset controller; self-clear */
96 HOST_IRQ_EN = (1 << 1), /* global IRQ enable */
97 HOST_MRSM = (1 << 2), /* MSI Revert to Single Message */
98 HOST_AHCI_EN = (1 << 31), /* AHCI enabled */
99
100 /* HOST_CAP bits */
101 HOST_CAP_SXS = (1 << 5), /* Supports External SATA */
102 HOST_CAP_EMS = (1 << 6), /* Enclosure Management support */
103 HOST_CAP_CCC = (1 << 7), /* Command Completion Coalescing */
104 HOST_CAP_PART = (1 << 13), /* Partial state capable */
105 HOST_CAP_SSC = (1 << 14), /* Slumber state capable */
106 HOST_CAP_PIO_MULTI = (1 << 15), /* PIO multiple DRQ support */
107 HOST_CAP_FBS = (1 << 16), /* FIS-based switching support */
108 HOST_CAP_PMP = (1 << 17), /* Port Multiplier support */
109 HOST_CAP_ONLY = (1 << 18), /* Supports AHCI mode only */
110 HOST_CAP_CLO = (1 << 24), /* Command List Override support */
111 HOST_CAP_LED = (1 << 25), /* Supports activity LED */
112 HOST_CAP_ALPM = (1 << 26), /* Aggressive Link PM support */
113 HOST_CAP_SSS = (1 << 27), /* Staggered Spin-up */
114 HOST_CAP_MPS = (1 << 28), /* Mechanical presence switch */
115 HOST_CAP_SNTF = (1 << 29), /* SNotification register */
116 HOST_CAP_NCQ = (1 << 30), /* Native Command Queueing */
117 HOST_CAP_64 = (1 << 31), /* PCI DAC (64-bit DMA) support */
118
119 /* HOST_CAP2 bits */
120 HOST_CAP2_BOH = (1 << 0), /* BIOS/OS handoff supported */
121 HOST_CAP2_NVMHCI = (1 << 1), /* NVMHCI supported */
122 HOST_CAP2_APST = (1 << 2), /* Automatic partial to slumber */
123 HOST_CAP2_SDS = (1 << 3), /* Support device sleep */
124 HOST_CAP2_SADM = (1 << 4), /* Support aggressive DevSlp */
125 HOST_CAP2_DESO = (1 << 5), /* DevSlp from slumber only */
126
127 /* registers for each SATA port */
128 PORT_LST_ADDR = 0x00, /* command list DMA addr */
129 PORT_LST_ADDR_HI = 0x04, /* command list DMA addr hi */
130 PORT_FIS_ADDR = 0x08, /* FIS rx buf addr */
131 PORT_FIS_ADDR_HI = 0x0c, /* FIS rx buf addr hi */
132 PORT_IRQ_STAT = 0x10, /* interrupt status */
133 PORT_IRQ_MASK = 0x14, /* interrupt enable/disable mask */
134 PORT_CMD = 0x18, /* port command */
135 PORT_TFDATA = 0x20, /* taskfile data */
136 PORT_SIG = 0x24, /* device TF signature */
137 PORT_CMD_ISSUE = 0x38, /* command issue */
138 PORT_SCR_STAT = 0x28, /* SATA phy register: SStatus */
139 PORT_SCR_CTL = 0x2c, /* SATA phy register: SControl */
140 PORT_SCR_ERR = 0x30, /* SATA phy register: SError */
141 PORT_SCR_ACT = 0x34, /* SATA phy register: SActive */
142 PORT_SCR_NTF = 0x3c, /* SATA phy register: SNotification */
143 PORT_FBS = 0x40, /* FIS-based Switching */
144 PORT_DEVSLP = 0x44, /* device sleep */
145
146 /* PORT_IRQ_{STAT,MASK} bits */
147 PORT_IRQ_COLD_PRES = (1 << 31), /* cold presence detect */
148 PORT_IRQ_TF_ERR = (1 << 30), /* task file error */
149 PORT_IRQ_HBUS_ERR = (1 << 29), /* host bus fatal error */
150 PORT_IRQ_HBUS_DATA_ERR = (1 << 28), /* host bus data error */
151 PORT_IRQ_IF_ERR = (1 << 27), /* interface fatal error */
152 PORT_IRQ_IF_NONFATAL = (1 << 26), /* interface non-fatal error */
153 PORT_IRQ_OVERFLOW = (1 << 24), /* xfer exhausted available S/G */
154 PORT_IRQ_BAD_PMP = (1 << 23), /* incorrect port multiplier */
155
156 PORT_IRQ_PHYRDY = (1 << 22), /* PhyRdy changed */
157 PORT_IRQ_DEV_ILCK = (1 << 7), /* device interlock */
158 PORT_IRQ_CONNECT = (1 << 6), /* port connect change status */
159 PORT_IRQ_SG_DONE = (1 << 5), /* descriptor processed */
160 PORT_IRQ_UNK_FIS = (1 << 4), /* unknown FIS rx'd */
161 PORT_IRQ_SDB_FIS = (1 << 3), /* Set Device Bits FIS rx'd */
162 PORT_IRQ_DMAS_FIS = (1 << 2), /* DMA Setup FIS rx'd */
163 PORT_IRQ_PIOS_FIS = (1 << 1), /* PIO Setup FIS rx'd */
164 PORT_IRQ_D2H_REG_FIS = (1 << 0), /* D2H Register FIS rx'd */
165
166 PORT_IRQ_FREEZE = PORT_IRQ_HBUS_ERR |
167 PORT_IRQ_IF_ERR |
168 PORT_IRQ_CONNECT |
169 PORT_IRQ_PHYRDY |
170 PORT_IRQ_UNK_FIS |
171 PORT_IRQ_BAD_PMP,
172 PORT_IRQ_ERROR = PORT_IRQ_FREEZE |
173 PORT_IRQ_TF_ERR |
174 PORT_IRQ_HBUS_DATA_ERR,
175 DEF_PORT_IRQ = PORT_IRQ_ERROR | PORT_IRQ_SG_DONE |
176 PORT_IRQ_SDB_FIS | PORT_IRQ_DMAS_FIS |
177 PORT_IRQ_PIOS_FIS | PORT_IRQ_D2H_REG_FIS,
178
179 /* PORT_CMD bits */
180 PORT_CMD_ASP = (1 << 27), /* Aggressive Slumber/Partial */
181 PORT_CMD_ALPE = (1 << 26), /* Aggressive Link PM enable */
182 PORT_CMD_ATAPI = (1 << 24), /* Device is ATAPI */
183 PORT_CMD_FBSCP = (1 << 22), /* FBS Capable Port */
184 PORT_CMD_ESP = (1 << 21), /* External Sata Port */
185 PORT_CMD_HPCP = (1 << 18), /* HotPlug Capable Port */
186 PORT_CMD_PMP = (1 << 17), /* PMP attached */
187 PORT_CMD_LIST_ON = (1 << 15), /* cmd list DMA engine running */
188 PORT_CMD_FIS_ON = (1 << 14), /* FIS DMA engine running */
189 PORT_CMD_FIS_RX = (1 << 4), /* Enable FIS receive DMA engine */
190 PORT_CMD_CLO = (1 << 3), /* Command list override */
191 PORT_CMD_POWER_ON = (1 << 2), /* Power up device */
192 PORT_CMD_SPIN_UP = (1 << 1), /* Spin up device */
193 PORT_CMD_START = (1 << 0), /* Enable port DMA engine */
194
195 PORT_CMD_ICC_MASK = (0xf << 28), /* i/f ICC state mask */
196 PORT_CMD_ICC_ACTIVE = (0x1 << 28), /* Put i/f in active state */
197 PORT_CMD_ICC_PARTIAL = (0x2 << 28), /* Put i/f in partial state */
198 PORT_CMD_ICC_SLUMBER = (0x6 << 28), /* Put i/f in slumber state */
199
200 /* PORT_FBS bits */
201 PORT_FBS_DWE_OFFSET = 16, /* FBS device with error offset */
202 PORT_FBS_ADO_OFFSET = 12, /* FBS active dev optimization offset */
203 PORT_FBS_DEV_OFFSET = 8, /* FBS device to issue offset */
204 PORT_FBS_DEV_MASK = (0xf << PORT_FBS_DEV_OFFSET), /* FBS.DEV */
205 PORT_FBS_SDE = (1 << 2), /* FBS single device error */
206 PORT_FBS_DEC = (1 << 1), /* FBS device error clear */
207 PORT_FBS_EN = (1 << 0), /* Enable FBS */
208
209 /* PORT_DEVSLP bits */
210 PORT_DEVSLP_DM_OFFSET = 25, /* DITO multiplier offset */
211 PORT_DEVSLP_DM_MASK = (0xf << 25), /* DITO multiplier mask */
212 PORT_DEVSLP_DITO_OFFSET = 15, /* DITO offset */
213 PORT_DEVSLP_MDAT_OFFSET = 10, /* Minimum assertion time */
214 PORT_DEVSLP_DETO_OFFSET = 2, /* DevSlp exit timeout */
215 PORT_DEVSLP_DSP = (1 << 1), /* DevSlp present */
216 PORT_DEVSLP_ADSE = (1 << 0), /* Aggressive DevSlp enable */
217
218 /* hpriv->flags bits */
219
220 #define AHCI_HFLAGS(flags) .private_data = (void *)(flags)
221
222 AHCI_HFLAG_NO_NCQ = (1 << 0),
223 AHCI_HFLAG_IGN_IRQ_IF_ERR = (1 << 1), /* ignore IRQ_IF_ERR */
224 AHCI_HFLAG_IGN_SERR_INTERNAL = (1 << 2), /* ignore SERR_INTERNAL */
225 AHCI_HFLAG_32BIT_ONLY = (1 << 3), /* force 32bit */
226 AHCI_HFLAG_MV_PATA = (1 << 4), /* PATA port */
227 AHCI_HFLAG_NO_MSI = (1 << 5), /* no PCI MSI */
228 AHCI_HFLAG_NO_PMP = (1 << 6), /* no PMP */
229 AHCI_HFLAG_SECT255 = (1 << 8), /* max 255 sectors */
230 AHCI_HFLAG_YES_NCQ = (1 << 9), /* force NCQ cap on */
231 AHCI_HFLAG_NO_SUSPEND = (1 << 10), /* don't suspend */
232 AHCI_HFLAG_SRST_TOUT_IS_OFFLINE = (1 << 11), /* treat SRST timeout as
233 link offline */
234 AHCI_HFLAG_NO_SNTF = (1 << 12), /* no sntf */
235 AHCI_HFLAG_NO_FPDMA_AA = (1 << 13), /* no FPDMA AA */
236 AHCI_HFLAG_YES_FBS = (1 << 14), /* force FBS cap on */
237 AHCI_HFLAG_DELAY_ENGINE = (1 << 15), /* do not start engine on
238 port start (wait until
239 error-handling stage) */
240 AHCI_HFLAG_MULTI_MSI = (1 << 16), /* multiple PCI MSIs */
241 AHCI_HFLAG_NO_DEVSLP = (1 << 17), /* no device sleep */
242 AHCI_HFLAG_NO_FBS = (1 << 18), /* no FBS */
243 AHCI_HFLAG_EDGE_IRQ = (1 << 19), /* HOST_IRQ_STAT behaves as
244 Edge Triggered */
245
246 /* ap->flags bits */
247
248 AHCI_FLAG_COMMON = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA |
249 ATA_FLAG_ACPI_SATA | ATA_FLAG_AN,
250
251 ICH_MAP = 0x90, /* ICH MAP register */
252
253 /* em constants */
254 EM_MAX_SLOTS = 8,
255 EM_MAX_RETRY = 5,
256
257 /* em_ctl bits */
258 EM_CTL_RST = (1 << 9), /* Reset */
259 EM_CTL_TM = (1 << 8), /* Transmit Message */
260 EM_CTL_MR = (1 << 0), /* Message Received */
261 EM_CTL_ALHD = (1 << 26), /* Activity LED */
262 EM_CTL_XMT = (1 << 25), /* Transmit Only */
263 EM_CTL_SMB = (1 << 24), /* Single Message Buffer */
264 EM_CTL_SGPIO = (1 << 19), /* SGPIO messages supported */
265 EM_CTL_SES = (1 << 18), /* SES-2 messages supported */
266 EM_CTL_SAFTE = (1 << 17), /* SAF-TE messages supported */
267 EM_CTL_LED = (1 << 16), /* LED messages supported */
268
269 /* em message type */
270 EM_MSG_TYPE_LED = (1 << 0), /* LED */
271 EM_MSG_TYPE_SAFTE = (1 << 1), /* SAF-TE */
272 EM_MSG_TYPE_SES2 = (1 << 2), /* SES-2 */
273 EM_MSG_TYPE_SGPIO = (1 << 3), /* SGPIO */
274 };
275
276 struct ahci_cmd_hdr {
277 __le32 opts;
278 __le32 status;
279 __le32 tbl_addr;
280 __le32 tbl_addr_hi;
281 __le32 reserved[4];
282 };
283
284 struct ahci_sg {
285 __le32 addr;
286 __le32 addr_hi;
287 __le32 reserved;
288 __le32 flags_size;
289 };
290
291 struct ahci_em_priv {
292 enum sw_activity blink_policy;
293 struct timer_list timer;
294 unsigned long saved_activity;
295 unsigned long activity;
296 unsigned long led_state;
297 };
298
299 struct ahci_port_priv {
300 struct ata_link *active_link;
301 struct ahci_cmd_hdr *cmd_slot;
302 dma_addr_t cmd_slot_dma;
303 void *cmd_tbl;
304 dma_addr_t cmd_tbl_dma;
305 void *rx_fis;
306 dma_addr_t rx_fis_dma;
307 /* for NCQ spurious interrupt analysis */
308 unsigned int ncq_saw_d2h:1;
309 unsigned int ncq_saw_dmas:1;
310 unsigned int ncq_saw_sdb:1;
311 atomic_t intr_status; /* interrupts to handle */
312 spinlock_t lock; /* protects parent ata_port */
313 u32 intr_mask; /* interrupts to enable */
314 bool fbs_supported; /* set iff FBS is supported */
315 bool fbs_enabled; /* set iff FBS is enabled */
316 int fbs_last_dev; /* save FBS.DEV of last FIS */
317 /* enclosure management info per PM slot */
318 struct ahci_em_priv em_priv[EM_MAX_SLOTS];
319 char *irq_desc; /* desc in /proc/interrupts */
320 };
321
322 struct ahci_host_priv {
323 /* Input fields */
324 unsigned int flags; /* AHCI_HFLAG_* */
325 u32 force_port_map; /* force port map */
326 u32 mask_port_map; /* mask out particular bits */
327
328 void __iomem * mmio; /* bus-independent mem map */
329 u32 cap; /* cap to use */
330 u32 cap2; /* cap2 to use */
331 u32 port_map; /* port map to use */
332 u32 saved_cap; /* saved initial cap */
333 u32 saved_cap2; /* saved initial cap2 */
334 u32 saved_port_map; /* saved initial port_map */
335 u32 em_loc; /* enclosure management location */
336 u32 em_buf_sz; /* EM buffer size in byte */
337 u32 em_msg_type; /* EM message type */
338 bool got_runtime_pm; /* Did we do pm_runtime_get? */
339 struct clk *clks[AHCI_MAX_CLKS]; /* Optional */
340 struct regulator **target_pwrs; /* Optional */
341 /*
342 * If platform uses PHYs. There is a 1:1 relation between the port number and
343 * the PHY position in this array.
344 */
345 struct phy **phys;
346 unsigned nports; /* Number of ports */
347 void *plat_data; /* Other platform data */
348 unsigned int irq; /* interrupt line */
349 /*
350 * Optional ahci_start_engine override, if not set this gets set to the
351 * default ahci_start_engine during ahci_save_initial_config, this can
352 * be overridden anytime before the host is activated.
353 */
354 void (*start_engine)(struct ata_port *ap);
355 };
356
357 extern int ahci_ignore_sss;
358
359 extern struct device_attribute *ahci_shost_attrs[];
360 extern struct device_attribute *ahci_sdev_attrs[];
361
362 /*
363 * This must be instantiated by the edge drivers. Read the comments
364 * for ATA_BASE_SHT
365 */
366 #define AHCI_SHT(drv_name) \
367 ATA_NCQ_SHT(drv_name), \
368 .can_queue = AHCI_MAX_CMDS - 1, \
369 .sg_tablesize = AHCI_MAX_SG, \
370 .dma_boundary = AHCI_DMA_BOUNDARY, \
371 .shost_attrs = ahci_shost_attrs, \
372 .sdev_attrs = ahci_sdev_attrs
373
374 extern struct ata_port_operations ahci_ops;
375 extern struct ata_port_operations ahci_platform_ops;
376 extern struct ata_port_operations ahci_pmp_retry_srst_ops;
377
378 unsigned int ahci_dev_classify(struct ata_port *ap);
379 void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag,
380 u32 opts);
381 void ahci_save_initial_config(struct device *dev,
382 struct ahci_host_priv *hpriv);
383 void ahci_init_controller(struct ata_host *host);
384 int ahci_reset_controller(struct ata_host *host);
385
386 int ahci_do_softreset(struct ata_link *link, unsigned int *class,
387 int pmp, unsigned long deadline,
388 int (*check_ready)(struct ata_link *link));
389
390 unsigned int ahci_qc_issue(struct ata_queued_cmd *qc);
391 int ahci_stop_engine(struct ata_port *ap);
392 void ahci_start_fis_rx(struct ata_port *ap);
393 void ahci_start_engine(struct ata_port *ap);
394 int ahci_check_ready(struct ata_link *link);
395 int ahci_kick_engine(struct ata_port *ap);
396 int ahci_port_resume(struct ata_port *ap);
397 void ahci_set_em_messages(struct ahci_host_priv *hpriv,
398 struct ata_port_info *pi);
399 int ahci_reset_em(struct ata_host *host);
400 void ahci_print_info(struct ata_host *host, const char *scc_s);
401 int ahci_host_activate(struct ata_host *host, struct scsi_host_template *sht);
402 void ahci_error_handler(struct ata_port *ap);
403
404 static inline void __iomem *__ahci_port_base(struct ata_host *host,
405 unsigned int port_no)
406 {
407 struct ahci_host_priv *hpriv = host->private_data;
408 void __iomem *mmio = hpriv->mmio;
409
410 return mmio + 0x100 + (port_no * 0x80);
411 }
412
413 static inline void __iomem *ahci_port_base(struct ata_port *ap)
414 {
415 return __ahci_port_base(ap->host, ap->port_no);
416 }
417
418 static inline int ahci_nr_ports(u32 cap)
419 {
420 return (cap & 0x1f) + 1;
421 }
422
423 #endif /* _AHCI_H */
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