ahci.h revision fad16e7a7f67eef8d33f8ad58850db89382b09ce
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 AHCI_HFLAG_NO_FPDMA_AA = (1 << 13), /* no FPDMA AA */ 212 AHCI_HFLAG_YES_FBS = (1 << 14), /* force FBS cap on */ 213 214 /* ap->flags bits */ 215 216 AHCI_FLAG_COMMON = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | 217 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA | 218 ATA_FLAG_ACPI_SATA | ATA_FLAG_AN | 219 ATA_FLAG_IPM, 220 221 ICH_MAP = 0x90, /* ICH MAP register */ 222 223 /* em constants */ 224 EM_MAX_SLOTS = 8, 225 EM_MAX_RETRY = 5, 226 227 /* em_ctl bits */ 228 EM_CTL_RST = (1 << 9), /* Reset */ 229 EM_CTL_TM = (1 << 8), /* Transmit Message */ 230 EM_CTL_MR = (1 << 0), /* Message Recieved */ 231 EM_CTL_ALHD = (1 << 26), /* Activity LED */ 232 EM_CTL_XMT = (1 << 25), /* Transmit Only */ 233 EM_CTL_SMB = (1 << 24), /* Single Message Buffer */ 234 235 /* em message type */ 236 EM_MSG_TYPE_LED = (1 << 0), /* LED */ 237 EM_MSG_TYPE_SAFTE = (1 << 1), /* SAF-TE */ 238 EM_MSG_TYPE_SES2 = (1 << 2), /* SES-2 */ 239 EM_MSG_TYPE_SGPIO = (1 << 3), /* SGPIO */ 240}; 241 242struct ahci_cmd_hdr { 243 __le32 opts; 244 __le32 status; 245 __le32 tbl_addr; 246 __le32 tbl_addr_hi; 247 __le32 reserved[4]; 248}; 249 250struct ahci_sg { 251 __le32 addr; 252 __le32 addr_hi; 253 __le32 reserved; 254 __le32 flags_size; 255}; 256 257struct ahci_em_priv { 258 enum sw_activity blink_policy; 259 struct timer_list timer; 260 unsigned long saved_activity; 261 unsigned long activity; 262 unsigned long led_state; 263}; 264 265struct ahci_port_priv { 266 struct ata_link *active_link; 267 struct ahci_cmd_hdr *cmd_slot; 268 dma_addr_t cmd_slot_dma; 269 void *cmd_tbl; 270 dma_addr_t cmd_tbl_dma; 271 void *rx_fis; 272 dma_addr_t rx_fis_dma; 273 /* for NCQ spurious interrupt analysis */ 274 unsigned int ncq_saw_d2h:1; 275 unsigned int ncq_saw_dmas:1; 276 unsigned int ncq_saw_sdb:1; 277 u32 intr_mask; /* interrupts to enable */ 278 bool fbs_supported; /* set iff FBS is supported */ 279 bool fbs_enabled; /* set iff FBS is enabled */ 280 int fbs_last_dev; /* save FBS.DEV of last FIS */ 281 /* enclosure management info per PM slot */ 282 struct ahci_em_priv em_priv[EM_MAX_SLOTS]; 283}; 284 285struct ahci_host_priv { 286 void __iomem * mmio; /* bus-independant mem map */ 287 unsigned int flags; /* AHCI_HFLAG_* */ 288 u32 cap; /* cap to use */ 289 u32 cap2; /* cap2 to use */ 290 u32 port_map; /* port map to use */ 291 u32 saved_cap; /* saved initial cap */ 292 u32 saved_cap2; /* saved initial cap2 */ 293 u32 saved_port_map; /* saved initial port_map */ 294 u32 em_loc; /* enclosure management location */ 295 u32 em_buf_sz; /* EM buffer size in byte */ 296 u32 em_msg_type; /* EM message type */ 297}; 298 299extern int ahci_ignore_sss; 300 301extern struct device_attribute *ahci_shost_attrs[]; 302extern struct device_attribute *ahci_sdev_attrs[]; 303 304#define AHCI_SHT(drv_name) \ 305 ATA_NCQ_SHT(drv_name), \ 306 .can_queue = AHCI_MAX_CMDS - 1, \ 307 .sg_tablesize = AHCI_MAX_SG, \ 308 .dma_boundary = AHCI_DMA_BOUNDARY, \ 309 .shost_attrs = ahci_shost_attrs, \ 310 .sdev_attrs = ahci_sdev_attrs 311 312extern struct ata_port_operations ahci_ops; 313 314void ahci_save_initial_config(struct device *dev, 315 struct ahci_host_priv *hpriv, 316 unsigned int force_port_map, 317 unsigned int mask_port_map); 318void ahci_init_controller(struct ata_host *host); 319int ahci_reset_controller(struct ata_host *host); 320 321int ahci_do_softreset(struct ata_link *link, unsigned int *class, 322 int pmp, unsigned long deadline, 323 int (*check_ready)(struct ata_link *link)); 324 325int ahci_stop_engine(struct ata_port *ap); 326void ahci_start_engine(struct ata_port *ap); 327int ahci_check_ready(struct ata_link *link); 328int ahci_kick_engine(struct ata_port *ap); 329void ahci_set_em_messages(struct ahci_host_priv *hpriv, 330 struct ata_port_info *pi); 331int ahci_reset_em(struct ata_host *host); 332irqreturn_t ahci_interrupt(int irq, void *dev_instance); 333void ahci_print_info(struct ata_host *host, const char *scc_s); 334 335static inline void __iomem *__ahci_port_base(struct ata_host *host, 336 unsigned int port_no) 337{ 338 struct ahci_host_priv *hpriv = host->private_data; 339 void __iomem *mmio = hpriv->mmio; 340 341 return mmio + 0x100 + (port_no * 0x80); 342} 343 344static inline void __iomem *ahci_port_base(struct ata_port *ap) 345{ 346 return __ahci_port_base(ap->host, ap->port_no); 347} 348 349static inline int ahci_nr_ports(u32 cap) 350{ 351 return (cap & 0x1f) + 1; 352} 353 354#endif /* _AHCI_H */ 355