2 * ahci.h - Common AHCI SATA definitions and declarations
4 * Maintained by: Jeff Garzik <jgarzik@pobox.com>
5 * Please ALWAYS copy linux-ide@vger.kernel.org
8 * Copyright 2004-2005 Red Hat, Inc.
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)
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.
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.
26 * libata documentation is available via 'make {ps|pdf}docs',
27 * as Documentation/DocBook/libata.*
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
38 #include <linux/libata.h>
40 /* Enclosure Management Control */
41 #define EM_CTRL_MSG_TYPE 0x000f0000
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
53 AHCI_MAX_SG = 168, /* hardware max is 64K */
54 AHCI_DMA_BOUNDARY = 0xffffffff,
57 AHCI_CMD_SLOT_SZ = AHCI_MAX_CMDS * AHCI_CMD_SZ,
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 +
65 AHCI_PORT_PRIV_FBS_DMA_SZ = AHCI_CMD_SLOT_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),
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 */
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 */
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 */
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 */
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 */
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 */
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 */
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 */
156 PORT_IRQ_FREEZE = PORT_IRQ_HBUS_ERR |
162 PORT_IRQ_ERROR = PORT_IRQ_FREEZE |
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,
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 */
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 */
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 */
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
210 AHCI_HFLAG_NO_SNTF = (1 << 12), /* no sntf */
211 AHCI_HFLAG_NO_FPDMA_AA = (1 << 13), /* no FPDMA AA */
215 AHCI_FLAG_COMMON = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
216 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA |
217 ATA_FLAG_ACPI_SATA | ATA_FLAG_AN |
220 ICH_MAP = 0x90, /* ICH MAP register */
227 EM_CTL_RST = (1 << 9), /* Reset */
228 EM_CTL_TM = (1 << 8), /* Transmit Message */
229 EM_CTL_MR = (1 << 0), /* Message Recieved */
230 EM_CTL_ALHD = (1 << 26), /* Activity LED */
231 EM_CTL_XMT = (1 << 25), /* Transmit Only */
232 EM_CTL_SMB = (1 << 24), /* Single Message Buffer */
234 /* em message type */
235 EM_MSG_TYPE_LED = (1 << 0), /* LED */
236 EM_MSG_TYPE_SAFTE = (1 << 1), /* SAF-TE */
237 EM_MSG_TYPE_SES2 = (1 << 2), /* SES-2 */
238 EM_MSG_TYPE_SGPIO = (1 << 3), /* SGPIO */
241 struct ahci_cmd_hdr {
256 struct ahci_em_priv {
257 enum sw_activity blink_policy;
258 struct timer_list timer;
259 unsigned long saved_activity;
260 unsigned long activity;
261 unsigned long led_state;
264 struct ahci_port_priv {
265 struct ata_link *active_link;
266 struct ahci_cmd_hdr *cmd_slot;
267 dma_addr_t cmd_slot_dma;
269 dma_addr_t cmd_tbl_dma;
271 dma_addr_t rx_fis_dma;
272 /* for NCQ spurious interrupt analysis */
273 unsigned int ncq_saw_d2h:1;
274 unsigned int ncq_saw_dmas:1;
275 unsigned int ncq_saw_sdb:1;
276 u32 intr_mask; /* interrupts to enable */
277 bool fbs_supported; /* set iff FBS is supported */
278 bool fbs_enabled; /* set iff FBS is enabled */
279 int fbs_last_dev; /* save FBS.DEV of last FIS */
280 /* enclosure management info per PM slot */
281 struct ahci_em_priv em_priv[EM_MAX_SLOTS];
284 struct ahci_host_priv {
285 void __iomem * mmio; /* bus-independant mem map */
286 unsigned int flags; /* AHCI_HFLAG_* */
287 u32 cap; /* cap to use */
288 u32 cap2; /* cap2 to use */
289 u32 port_map; /* port map to use */
290 u32 saved_cap; /* saved initial cap */
291 u32 saved_cap2; /* saved initial cap2 */
292 u32 saved_port_map; /* saved initial port_map */
293 u32 em_loc; /* enclosure management location */
294 u32 em_buf_sz; /* EM buffer size in byte */
295 u32 em_msg_type; /* EM message type */
298 extern int ahci_ignore_sss;
300 extern struct scsi_host_template ahci_sht;
301 extern struct ata_port_operations ahci_ops;
303 void ahci_save_initial_config(struct device *dev,
304 struct ahci_host_priv *hpriv,
305 unsigned int force_port_map,
306 unsigned int mask_port_map);
307 void ahci_init_controller(struct ata_host *host);
308 int ahci_reset_controller(struct ata_host *host);
310 int ahci_do_softreset(struct ata_link *link, unsigned int *class,
311 int pmp, unsigned long deadline,
312 int (*check_ready)(struct ata_link *link));
314 int ahci_stop_engine(struct ata_port *ap);
315 void ahci_start_engine(struct ata_port *ap);
316 int ahci_check_ready(struct ata_link *link);
317 int ahci_kick_engine(struct ata_port *ap);
318 void ahci_set_em_messages(struct ahci_host_priv *hpriv,
319 struct ata_port_info *pi);
320 int ahci_reset_em(struct ata_host *host);
321 irqreturn_t ahci_interrupt(int irq, void *dev_instance);
322 void ahci_print_info(struct ata_host *host, const char *scc_s);
324 static inline void __iomem *__ahci_port_base(struct ata_host *host,
325 unsigned int port_no)
327 struct ahci_host_priv *hpriv = host->private_data;
328 void __iomem *mmio = hpriv->mmio;
330 return mmio + 0x100 + (port_no * 0x80);
333 static inline void __iomem *ahci_port_base(struct ata_port *ap)
335 return __ahci_port_base(ap->host, ap->port_no);
338 static inline int ahci_nr_ports(u32 cap)
340 return (cap & 0x1f) + 1;