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_PMP = (1 << 17), /* PMP attached */
185 PORT_CMD_LIST_ON = (1 << 15), /* cmd list DMA engine running */
186 PORT_CMD_FIS_ON = (1 << 14), /* FIS DMA engine running */
187 PORT_CMD_FIS_RX = (1 << 4), /* Enable FIS receive DMA engine */
188 PORT_CMD_CLO = (1 << 3), /* Command list override */
189 PORT_CMD_POWER_ON = (1 << 2), /* Power up device */
190 PORT_CMD_SPIN_UP = (1 << 1), /* Spin up device */
191 PORT_CMD_START = (1 << 0), /* Enable port DMA engine */
192
193 PORT_CMD_ICC_MASK = (0xf << 28), /* i/f ICC state mask */
194 PORT_CMD_ICC_ACTIVE = (0x1 << 28), /* Put i/f in active state */
195 PORT_CMD_ICC_PARTIAL = (0x2 << 28), /* Put i/f in partial state */
196 PORT_CMD_ICC_SLUMBER = (0x6 << 28), /* Put i/f in slumber state */
197
198 /* PORT_FBS bits */
199 PORT_FBS_DWE_OFFSET = 16, /* FBS device with error offset */
200 PORT_FBS_ADO_OFFSET = 12, /* FBS active dev optimization offset */
201 PORT_FBS_DEV_OFFSET = 8, /* FBS device to issue offset */
202 PORT_FBS_DEV_MASK = (0xf << PORT_FBS_DEV_OFFSET), /* FBS.DEV */
203 PORT_FBS_SDE = (1 << 2), /* FBS single device error */
204 PORT_FBS_DEC = (1 << 1), /* FBS device error clear */
205 PORT_FBS_EN = (1 << 0), /* Enable FBS */
206
207 /* PORT_DEVSLP bits */
208 PORT_DEVSLP_DM_OFFSET = 25, /* DITO multiplier offset */
209 PORT_DEVSLP_DM_MASK = (0xf << 25), /* DITO multiplier mask */
210 PORT_DEVSLP_DITO_OFFSET = 15, /* DITO offset */
211 PORT_DEVSLP_MDAT_OFFSET = 10, /* Minimum assertion time */
212 PORT_DEVSLP_DETO_OFFSET = 2, /* DevSlp exit timeout */
213 PORT_DEVSLP_DSP = (1 << 1), /* DevSlp present */
214 PORT_DEVSLP_ADSE = (1 << 0), /* Aggressive DevSlp enable */
215
216 /* hpriv->flags bits */
217
218 #define AHCI_HFLAGS(flags) .private_data = (void *)(flags)
219
220 AHCI_HFLAG_NO_NCQ = (1 << 0),
221 AHCI_HFLAG_IGN_IRQ_IF_ERR = (1 << 1), /* ignore IRQ_IF_ERR */
222 AHCI_HFLAG_IGN_SERR_INTERNAL = (1 << 2), /* ignore SERR_INTERNAL */
223 AHCI_HFLAG_32BIT_ONLY = (1 << 3), /* force 32bit */
224 AHCI_HFLAG_MV_PATA = (1 << 4), /* PATA port */
225 AHCI_HFLAG_NO_MSI = (1 << 5), /* no PCI MSI */
226 AHCI_HFLAG_NO_PMP = (1 << 6), /* no PMP */
227 AHCI_HFLAG_SECT255 = (1 << 8), /* max 255 sectors */
228 AHCI_HFLAG_YES_NCQ = (1 << 9), /* force NCQ cap on */
229 AHCI_HFLAG_NO_SUSPEND = (1 << 10), /* don't suspend */
230 AHCI_HFLAG_SRST_TOUT_IS_OFFLINE = (1 << 11), /* treat SRST timeout as
231 link offline */
232 AHCI_HFLAG_NO_SNTF = (1 << 12), /* no sntf */
233 AHCI_HFLAG_NO_FPDMA_AA = (1 << 13), /* no FPDMA AA */
234 AHCI_HFLAG_YES_FBS = (1 << 14), /* force FBS cap on */
235 AHCI_HFLAG_DELAY_ENGINE = (1 << 15), /* do not start engine on
236 port start (wait until
237 error-handling stage) */
238 AHCI_HFLAG_MULTI_MSI = (1 << 16), /* multiple PCI MSIs */
239 AHCI_HFLAG_NO_DEVSLP = (1 << 17), /* no device sleep */
240 AHCI_HFLAG_NO_FBS = (1 << 18), /* no FBS */
241
242 /* ap->flags bits */
243
244 AHCI_FLAG_COMMON = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA |
245 ATA_FLAG_ACPI_SATA | ATA_FLAG_AN,
246
247 ICH_MAP = 0x90, /* ICH MAP register */
248
249 /* em constants */
250 EM_MAX_SLOTS = 8,
251 EM_MAX_RETRY = 5,
252
253 /* em_ctl bits */
254 EM_CTL_RST = (1 << 9), /* Reset */
255 EM_CTL_TM = (1 << 8), /* Transmit Message */
256 EM_CTL_MR = (1 << 0), /* Message Received */
257 EM_CTL_ALHD = (1 << 26), /* Activity LED */
258 EM_CTL_XMT = (1 << 25), /* Transmit Only */
259 EM_CTL_SMB = (1 << 24), /* Single Message Buffer */
260 EM_CTL_SGPIO = (1 << 19), /* SGPIO messages supported */
261 EM_CTL_SES = (1 << 18), /* SES-2 messages supported */
262 EM_CTL_SAFTE = (1 << 17), /* SAF-TE messages supported */
263 EM_CTL_LED = (1 << 16), /* LED messages supported */
264
265 /* em message type */
266 EM_MSG_TYPE_LED = (1 << 0), /* LED */
267 EM_MSG_TYPE_SAFTE = (1 << 1), /* SAF-TE */
268 EM_MSG_TYPE_SES2 = (1 << 2), /* SES-2 */
269 EM_MSG_TYPE_SGPIO = (1 << 3), /* SGPIO */
270 };
271
272 struct ahci_cmd_hdr {
273 __le32 opts;
274 __le32 status;
275 __le32 tbl_addr;
276 __le32 tbl_addr_hi;
277 __le32 reserved[4];
278 };
279
280 struct ahci_sg {
281 __le32 addr;
282 __le32 addr_hi;
283 __le32 reserved;
284 __le32 flags_size;
285 };
286
287 struct ahci_em_priv {
288 enum sw_activity blink_policy;
289 struct timer_list timer;
290 unsigned long saved_activity;
291 unsigned long activity;
292 unsigned long led_state;
293 };
294
295 struct ahci_port_priv {
296 struct ata_link *active_link;
297 struct ahci_cmd_hdr *cmd_slot;
298 dma_addr_t cmd_slot_dma;
299 void *cmd_tbl;
300 dma_addr_t cmd_tbl_dma;
301 void *rx_fis;
302 dma_addr_t rx_fis_dma;
303 /* for NCQ spurious interrupt analysis */
304 unsigned int ncq_saw_d2h:1;
305 unsigned int ncq_saw_dmas:1;
306 unsigned int ncq_saw_sdb:1;
307 atomic_t intr_status; /* interrupts to handle */
308 spinlock_t lock; /* protects parent ata_port */
309 u32 intr_mask; /* interrupts to enable */
310 bool fbs_supported; /* set iff FBS is supported */
311 bool fbs_enabled; /* set iff FBS is enabled */
312 int fbs_last_dev; /* save FBS.DEV of last FIS */
313 /* enclosure management info per PM slot */
314 struct ahci_em_priv em_priv[EM_MAX_SLOTS];
315 char *irq_desc; /* desc in /proc/interrupts */
316 };
317
318 struct ahci_host_priv {
319 /* Input fields */
320 unsigned int flags; /* AHCI_HFLAG_* */
321 u32 force_port_map; /* force port map */
322 u32 mask_port_map; /* mask out particular bits */
323
324 void __iomem * mmio; /* bus-independent mem map */
325 u32 cap; /* cap to use */
326 u32 cap2; /* cap2 to use */
327 u32 port_map; /* port map to use */
328 u32 saved_cap; /* saved initial cap */
329 u32 saved_cap2; /* saved initial cap2 */
330 u32 saved_port_map; /* saved initial port_map */
331 u32 em_loc; /* enclosure management location */
332 u32 em_buf_sz; /* EM buffer size in byte */
333 u32 em_msg_type; /* EM message type */
334 bool got_runtime_pm; /* Did we do pm_runtime_get? */
335 struct clk *clks[AHCI_MAX_CLKS]; /* Optional */
336 struct regulator *target_pwr; /* Optional */
337 /*
338 * If platform uses PHYs. There is a 1:1 relation between the port number and
339 * the PHY position in this array.
340 */
341 struct phy **phys;
342 unsigned nports; /* Number of ports */
343 void *plat_data; /* Other platform data */
344 /*
345 * Optional ahci_start_engine override, if not set this gets set to the
346 * default ahci_start_engine during ahci_save_initial_config, this can
347 * be overridden anytime before the host is activated.
348 */
349 void (*start_engine)(struct ata_port *ap);
350 };
351
352 extern int ahci_ignore_sss;
353
354 extern struct device_attribute *ahci_shost_attrs[];
355 extern struct device_attribute *ahci_sdev_attrs[];
356
357 #define AHCI_SHT(drv_name) \
358 ATA_NCQ_SHT(drv_name), \
359 .can_queue = AHCI_MAX_CMDS - 1, \
360 .sg_tablesize = AHCI_MAX_SG, \
361 .dma_boundary = AHCI_DMA_BOUNDARY, \
362 .shost_attrs = ahci_shost_attrs, \
363 .sdev_attrs = ahci_sdev_attrs
364
365 extern struct ata_port_operations ahci_ops;
366 extern struct ata_port_operations ahci_platform_ops;
367 extern struct ata_port_operations ahci_pmp_retry_srst_ops;
368
369 unsigned int ahci_dev_classify(struct ata_port *ap);
370 void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag,
371 u32 opts);
372 void ahci_save_initial_config(struct device *dev,
373 struct ahci_host_priv *hpriv);
374 void ahci_init_controller(struct ata_host *host);
375 int ahci_reset_controller(struct ata_host *host);
376
377 int ahci_do_softreset(struct ata_link *link, unsigned int *class,
378 int pmp, unsigned long deadline,
379 int (*check_ready)(struct ata_link *link));
380
381 unsigned int ahci_qc_issue(struct ata_queued_cmd *qc);
382 int ahci_stop_engine(struct ata_port *ap);
383 void ahci_start_fis_rx(struct ata_port *ap);
384 void ahci_start_engine(struct ata_port *ap);
385 int ahci_check_ready(struct ata_link *link);
386 int ahci_kick_engine(struct ata_port *ap);
387 int ahci_port_resume(struct ata_port *ap);
388 void ahci_set_em_messages(struct ahci_host_priv *hpriv,
389 struct ata_port_info *pi);
390 int ahci_reset_em(struct ata_host *host);
391 void ahci_print_info(struct ata_host *host, const char *scc_s);
392 int ahci_host_activate(struct ata_host *host, int irq,
393 struct scsi_host_template *sht);
394 void ahci_error_handler(struct ata_port *ap);
395
__ahci_port_base(struct ata_host * host,unsigned int port_no)396 static inline void __iomem *__ahci_port_base(struct ata_host *host,
397 unsigned int port_no)
398 {
399 struct ahci_host_priv *hpriv = host->private_data;
400 void __iomem *mmio = hpriv->mmio;
401
402 return mmio + 0x100 + (port_no * 0x80);
403 }
404
ahci_port_base(struct ata_port * ap)405 static inline void __iomem *ahci_port_base(struct ata_port *ap)
406 {
407 return __ahci_port_base(ap->host, ap->port_no);
408 }
409
ahci_nr_ports(u32 cap)410 static inline int ahci_nr_ports(u32 cap)
411 {
412 return (cap & 0x1f) + 1;
413 }
414
415 #endif /* _AHCI_H */
416