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gerrit-public.fairphone.software / kernel / msm-4.9 / 365cfa1ed5a36f9bcb9f64c9f0f52155af2e9fef / . / drivers / ata / ahci.h
blob: 111a878d9188e4d22503954a8283065258d9ee1e [file] [log] [blame]
Anton Vorontsov365cfa12010-03-28 00:22:14 -0400[diff] [blame^]1/*
2 * ahci.h - Common AHCI SATA definitions and declarations
3 *
4 * Maintained by: Jeff Garzik <jgarzik@pobox.com>
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/libata.h>
39
40/* Enclosure Management Control */
41#define EM_CTRL_MSG_TYPE 0x000f0000
42
43/* Enclosure Management LED Message Type */
44#define EM_MSG_LED_HBA_PORT 0x0000000f
45#define EM_MSG_LED_PMP_SLOT 0x0000ff00
46#define EM_MSG_LED_VALUE 0xffff0000
47#define EM_MSG_LED_VALUE_ACTIVITY 0x00070000
48#define EM_MSG_LED_VALUE_OFF 0xfff80000
49#define EM_MSG_LED_VALUE_ON 0x00010000
50
51enum {
52 AHCI_MAX_PORTS = 32,
53 AHCI_MAX_SG = 168, /* hardware max is 64K */
54 AHCI_DMA_BOUNDARY = 0xffffffff,
55 AHCI_MAX_CMDS = 32,
56 AHCI_CMD_SZ = 32,
57 AHCI_CMD_SLOT_SZ = AHCI_MAX_CMDS * AHCI_CMD_SZ,
58 AHCI_RX_FIS_SZ = 256,
59 AHCI_CMD_TBL_CDB = 0x40,
60 AHCI_CMD_TBL_HDR_SZ = 0x80,
61 AHCI_CMD_TBL_SZ = AHCI_CMD_TBL_HDR_SZ + (AHCI_MAX_SG * 16),
62 AHCI_CMD_TBL_AR_SZ = AHCI_CMD_TBL_SZ * AHCI_MAX_CMDS,
63 AHCI_PORT_PRIV_DMA_SZ = AHCI_CMD_SLOT_SZ + AHCI_CMD_TBL_AR_SZ +
64 AHCI_RX_FIS_SZ,
65 AHCI_PORT_PRIV_FBS_DMA_SZ = AHCI_CMD_SLOT_SZ +
66 AHCI_CMD_TBL_AR_SZ +
67 (AHCI_RX_FIS_SZ * 16),
68 AHCI_IRQ_ON_SG = (1 << 31),
69 AHCI_CMD_ATAPI = (1 << 5),
70 AHCI_CMD_WRITE = (1 << 6),
71 AHCI_CMD_PREFETCH = (1 << 7),
72 AHCI_CMD_RESET = (1 << 8),
73 AHCI_CMD_CLR_BUSY = (1 << 10),
74
75 RX_FIS_D2H_REG = 0x40, /* offset of D2H Register FIS data */
76 RX_FIS_SDB = 0x58, /* offset of SDB FIS data */
77 RX_FIS_UNK = 0x60, /* offset of Unknown FIS data */
78
79 /* global controller registers */
80 HOST_CAP = 0x00, /* host capabilities */
81 HOST_CTL = 0x04, /* global host control */
82 HOST_IRQ_STAT = 0x08, /* interrupt status */
83 HOST_PORTS_IMPL = 0x0c, /* bitmap of implemented ports */
84 HOST_VERSION = 0x10, /* AHCI spec. version compliancy */
85 HOST_EM_LOC = 0x1c, /* Enclosure Management location */
86 HOST_EM_CTL = 0x20, /* Enclosure Management Control */
87 HOST_CAP2 = 0x24, /* host capabilities, extended */
88
89 /* HOST_CTL bits */
90 HOST_RESET = (1 << 0), /* reset controller; self-clear */
91 HOST_IRQ_EN = (1 << 1), /* global IRQ enable */
92 HOST_AHCI_EN = (1 << 31), /* AHCI enabled */
93
94 /* HOST_CAP bits */
95 HOST_CAP_SXS = (1 << 5), /* Supports External SATA */
96 HOST_CAP_EMS = (1 << 6), /* Enclosure Management support */
97 HOST_CAP_CCC = (1 << 7), /* Command Completion Coalescing */
98 HOST_CAP_PART = (1 << 13), /* Partial state capable */
99 HOST_CAP_SSC = (1 << 14), /* Slumber state capable */
100 HOST_CAP_PIO_MULTI = (1 << 15), /* PIO multiple DRQ support */
101 HOST_CAP_FBS = (1 << 16), /* FIS-based switching support */
102 HOST_CAP_PMP = (1 << 17), /* Port Multiplier support */
103 HOST_CAP_ONLY = (1 << 18), /* Supports AHCI mode only */
104 HOST_CAP_CLO = (1 << 24), /* Command List Override support */
105 HOST_CAP_LED = (1 << 25), /* Supports activity LED */
106 HOST_CAP_ALPM = (1 << 26), /* Aggressive Link PM support */
107 HOST_CAP_SSS = (1 << 27), /* Staggered Spin-up */
108 HOST_CAP_MPS = (1 << 28), /* Mechanical presence switch */
109 HOST_CAP_SNTF = (1 << 29), /* SNotification register */
110 HOST_CAP_NCQ = (1 << 30), /* Native Command Queueing */
111 HOST_CAP_64 = (1 << 31), /* PCI DAC (64-bit DMA) support */
112
113 /* HOST_CAP2 bits */
114 HOST_CAP2_BOH = (1 << 0), /* BIOS/OS handoff supported */
115 HOST_CAP2_NVMHCI = (1 << 1), /* NVMHCI supported */
116 HOST_CAP2_APST = (1 << 2), /* Automatic partial to slumber */
117
118 /* registers for each SATA port */
119 PORT_LST_ADDR = 0x00, /* command list DMA addr */
120 PORT_LST_ADDR_HI = 0x04, /* command list DMA addr hi */
121 PORT_FIS_ADDR = 0x08, /* FIS rx buf addr */
122 PORT_FIS_ADDR_HI = 0x0c, /* FIS rx buf addr hi */
123 PORT_IRQ_STAT = 0x10, /* interrupt status */
124 PORT_IRQ_MASK = 0x14, /* interrupt enable/disable mask */
125 PORT_CMD = 0x18, /* port command */
126 PORT_TFDATA = 0x20, /* taskfile data */
127 PORT_SIG = 0x24, /* device TF signature */
128 PORT_CMD_ISSUE = 0x38, /* command issue */
129 PORT_SCR_STAT = 0x28, /* SATA phy register: SStatus */
130 PORT_SCR_CTL = 0x2c, /* SATA phy register: SControl */
131 PORT_SCR_ERR = 0x30, /* SATA phy register: SError */
132 PORT_SCR_ACT = 0x34, /* SATA phy register: SActive */
133 PORT_SCR_NTF = 0x3c, /* SATA phy register: SNotification */
134 PORT_FBS = 0x40, /* FIS-based Switching */
135
136 /* PORT_IRQ_{STAT,MASK} bits */
137 PORT_IRQ_COLD_PRES = (1 << 31), /* cold presence detect */
138 PORT_IRQ_TF_ERR = (1 << 30), /* task file error */
139 PORT_IRQ_HBUS_ERR = (1 << 29), /* host bus fatal error */
140 PORT_IRQ_HBUS_DATA_ERR = (1 << 28), /* host bus data error */
141 PORT_IRQ_IF_ERR = (1 << 27), /* interface fatal error */
142 PORT_IRQ_IF_NONFATAL = (1 << 26), /* interface non-fatal error */
143 PORT_IRQ_OVERFLOW = (1 << 24), /* xfer exhausted available S/G */
144 PORT_IRQ_BAD_PMP = (1 << 23), /* incorrect port multiplier */
145
146 PORT_IRQ_PHYRDY = (1 << 22), /* PhyRdy changed */
147 PORT_IRQ_DEV_ILCK = (1 << 7), /* device interlock */
148 PORT_IRQ_CONNECT = (1 << 6), /* port connect change status */
149 PORT_IRQ_SG_DONE = (1 << 5), /* descriptor processed */
150 PORT_IRQ_UNK_FIS = (1 << 4), /* unknown FIS rx'd */
151 PORT_IRQ_SDB_FIS = (1 << 3), /* Set Device Bits FIS rx'd */
152 PORT_IRQ_DMAS_FIS = (1 << 2), /* DMA Setup FIS rx'd */
153 PORT_IRQ_PIOS_FIS = (1 << 1), /* PIO Setup FIS rx'd */
154 PORT_IRQ_D2H_REG_FIS = (1 << 0), /* D2H Register FIS rx'd */
155
156 PORT_IRQ_FREEZE = PORT_IRQ_HBUS_ERR |
157 PORT_IRQ_IF_ERR |
158 PORT_IRQ_CONNECT |
159 PORT_IRQ_PHYRDY |
160 PORT_IRQ_UNK_FIS |
161 PORT_IRQ_BAD_PMP,
162 PORT_IRQ_ERROR = PORT_IRQ_FREEZE |
163 PORT_IRQ_TF_ERR |
164 PORT_IRQ_HBUS_DATA_ERR,
165 DEF_PORT_IRQ = PORT_IRQ_ERROR | PORT_IRQ_SG_DONE |
166 PORT_IRQ_SDB_FIS | PORT_IRQ_DMAS_FIS |
167 PORT_IRQ_PIOS_FIS | PORT_IRQ_D2H_REG_FIS,
168
169 /* PORT_CMD bits */
170 PORT_CMD_ASP = (1 << 27), /* Aggressive Slumber/Partial */
171 PORT_CMD_ALPE = (1 << 26), /* Aggressive Link PM enable */
172 PORT_CMD_ATAPI = (1 << 24), /* Device is ATAPI */
173 PORT_CMD_FBSCP = (1 << 22), /* FBS Capable Port */
174 PORT_CMD_PMP = (1 << 17), /* PMP attached */
175 PORT_CMD_LIST_ON = (1 << 15), /* cmd list DMA engine running */
176 PORT_CMD_FIS_ON = (1 << 14), /* FIS DMA engine running */
177 PORT_CMD_FIS_RX = (1 << 4), /* Enable FIS receive DMA engine */
178 PORT_CMD_CLO = (1 << 3), /* Command list override */
179 PORT_CMD_POWER_ON = (1 << 2), /* Power up device */
180 PORT_CMD_SPIN_UP = (1 << 1), /* Spin up device */
181 PORT_CMD_START = (1 << 0), /* Enable port DMA engine */
182
183 PORT_CMD_ICC_MASK = (0xf << 28), /* i/f ICC state mask */
184 PORT_CMD_ICC_ACTIVE = (0x1 << 28), /* Put i/f in active state */
185 PORT_CMD_ICC_PARTIAL = (0x2 << 28), /* Put i/f in partial state */
186 PORT_CMD_ICC_SLUMBER = (0x6 << 28), /* Put i/f in slumber state */
187
188 PORT_FBS_DWE_OFFSET = 16, /* FBS device with error offset */
189 PORT_FBS_ADO_OFFSET = 12, /* FBS active dev optimization offset */
190 PORT_FBS_DEV_OFFSET = 8, /* FBS device to issue offset */
191 PORT_FBS_DEV_MASK = (0xf << PORT_FBS_DEV_OFFSET), /* FBS.DEV */
192 PORT_FBS_SDE = (1 << 2), /* FBS single device error */
193 PORT_FBS_DEC = (1 << 1), /* FBS device error clear */
194 PORT_FBS_EN = (1 << 0), /* Enable FBS */
195
196 /* hpriv->flags bits */
197 AHCI_HFLAG_NO_NCQ = (1 << 0),
198 AHCI_HFLAG_IGN_IRQ_IF_ERR = (1 << 1), /* ignore IRQ_IF_ERR */
199 AHCI_HFLAG_IGN_SERR_INTERNAL = (1 << 2), /* ignore SERR_INTERNAL */
200 AHCI_HFLAG_32BIT_ONLY = (1 << 3), /* force 32bit */
201 AHCI_HFLAG_MV_PATA = (1 << 4), /* PATA port */
202 AHCI_HFLAG_NO_MSI = (1 << 5), /* no PCI MSI */
203 AHCI_HFLAG_NO_PMP = (1 << 6), /* no PMP */
204 AHCI_HFLAG_NO_HOTPLUG = (1 << 7), /* ignore PxSERR.DIAG.N */
205 AHCI_HFLAG_SECT255 = (1 << 8), /* max 255 sectors */
206 AHCI_HFLAG_YES_NCQ = (1 << 9), /* force NCQ cap on */
207 AHCI_HFLAG_NO_SUSPEND = (1 << 10), /* don't suspend */
208 AHCI_HFLAG_SRST_TOUT_IS_OFFLINE = (1 << 11), /* treat SRST timeout as
209 link offline */
210 AHCI_HFLAG_NO_SNTF = (1 << 12), /* no sntf */
211
212 /* ap->flags bits */
213
214 AHCI_FLAG_COMMON = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
215 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA |
216 ATA_FLAG_ACPI_SATA | ATA_FLAG_AN |
217 ATA_FLAG_IPM,
218
219 ICH_MAP = 0x90, /* ICH MAP register */
220
221 /* em constants */
222 EM_MAX_SLOTS = 8,
223 EM_MAX_RETRY = 5,
224
225 /* em_ctl bits */
226 EM_CTL_RST = (1 << 9), /* Reset */
227 EM_CTL_TM = (1 << 8), /* Transmit Message */
228 EM_CTL_ALHD = (1 << 26), /* Activity LED */
229};
230
231struct ahci_cmd_hdr {
232 __le32 opts;
233 __le32 status;
234 __le32 tbl_addr;
235 __le32 tbl_addr_hi;
236 __le32 reserved[4];
237};
238
239struct ahci_sg {
240 __le32 addr;
241 __le32 addr_hi;
242 __le32 reserved;
243 __le32 flags_size;
244};
245
246struct ahci_em_priv {
247 enum sw_activity blink_policy;
248 struct timer_list timer;
249 unsigned long saved_activity;
250 unsigned long activity;
251 unsigned long led_state;
252};
253
254struct ahci_port_priv {
255 struct ata_link *active_link;
256 struct ahci_cmd_hdr *cmd_slot;
257 dma_addr_t cmd_slot_dma;
258 void *cmd_tbl;
259 dma_addr_t cmd_tbl_dma;
260 void *rx_fis;
261 dma_addr_t rx_fis_dma;
262 /* for NCQ spurious interrupt analysis */
263 unsigned int ncq_saw_d2h:1;
264 unsigned int ncq_saw_dmas:1;
265 unsigned int ncq_saw_sdb:1;
266 u32 intr_mask; /* interrupts to enable */
267 bool fbs_supported; /* set iff FBS is supported */
268 bool fbs_enabled; /* set iff FBS is enabled */
269 int fbs_last_dev; /* save FBS.DEV of last FIS */
270 /* enclosure management info per PM slot */
271 struct ahci_em_priv em_priv[EM_MAX_SLOTS];
272};
273
274struct ahci_host_priv {
275 void __iomem * mmio; /* bus-independant mem map */
276 unsigned int flags; /* AHCI_HFLAG_* */
277 u32 cap; /* cap to use */
278 u32 cap2; /* cap2 to use */
279 u32 port_map; /* port map to use */
280 u32 saved_cap; /* saved initial cap */
281 u32 saved_cap2; /* saved initial cap2 */
282 u32 saved_port_map; /* saved initial port_map */
283 u32 em_loc; /* enclosure management location */
284};
285
286extern int ahci_em_messages;
287extern int ahci_ignore_sss;
288
289extern struct scsi_host_template ahci_sht;
290extern struct ata_port_operations ahci_ops;
291
292void ahci_save_initial_config(struct device *dev,
293 struct ahci_host_priv *hpriv,
294 unsigned int force_port_map,
295 unsigned int mask_port_map);
296void ahci_init_controller(struct ata_host *host);
297int ahci_reset_controller(struct ata_host *host);
298
299int ahci_do_softreset(struct ata_link *link, unsigned int *class,
300 int pmp, unsigned long deadline,
301 int (*check_ready)(struct ata_link *link));
302
303int ahci_stop_engine(struct ata_port *ap);
304void ahci_start_engine(struct ata_port *ap);
305int ahci_check_ready(struct ata_link *link);
306int ahci_kick_engine(struct ata_port *ap);
307void ahci_set_em_messages(struct ahci_host_priv *hpriv,
308 struct ata_port_info *pi);
309int ahci_reset_em(struct ata_host *host);
310irqreturn_t ahci_interrupt(int irq, void *dev_instance);
311void ahci_print_info(struct ata_host *host, const char *scc_s);
312
313static inline void __iomem *__ahci_port_base(struct ata_host *host,
314 unsigned int port_no)
315{
316 struct ahci_host_priv *hpriv = host->private_data;
317 void __iomem *mmio = hpriv->mmio;
318
319 return mmio + 0x100 + (port_no * 0x80);
320}
321
322static inline void __iomem *ahci_port_base(struct ata_port *ap)
323{
324 return __ahci_port_base(ap->host, ap->port_no);
325}
326
327static inline int ahci_nr_ports(u32 cap)
328{
329 return (cap & 0x1f) + 1;
330}
331
332#endif /* _AHCI_H */