drivers/ata/ahci.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  *  ahci.h - Common AHCI SATA definitions and declarations
   4  *
   5  *  Maintained by:  Tejun Heo <tj@kernel.org>
   6  *                  Please ALWAYS copy linux-ide@vger.kernel.org
   7  *                  on emails.
   8  *
   9  *  Copyright 2004-2005 Red Hat, Inc.
  10  *
  11  * libata documentation is available via 'make {ps|pdf}docs',
  12  * as Documentation/driver-api/libata.rst
  13  *
  14  * AHCI hardware documentation:
  15  * http://www.intel.com/technology/serialata/pdf/rev1_0.pdf
  16  * http://www.intel.com/technology/serialata/pdf/rev1_1.pdf
  17  */
  18
  19 #ifndef _AHCI_H
  20 #define _AHCI_H
  21
  22 #include <linux/pci.h>
  23 #include <linux/clk.h>
  24 #include <linux/libata.h>
  25 #include <linux/phy/phy.h>
  26 #include <linux/regulator/consumer.h>
  27
  28 /* Enclosure Management Control */
  29 #define EM_CTRL_MSG_TYPE              0x000f0000
  30
  31 /* Enclosure Management LED Message Type */
  32 #define EM_MSG_LED_HBA_PORT           0x0000000f
  33 #define EM_MSG_LED_PMP_SLOT           0x0000ff00
  34 #define EM_MSG_LED_VALUE              0xffff0000
  35 #define EM_MSG_LED_VALUE_ACTIVITY     0x00070000
  36 #define EM_MSG_LED_VALUE_OFF          0xfff80000
  37 #define EM_MSG_LED_VALUE_ON           0x00010000
  38
  39 enum {
  40         AHCI_MAX_PORTS          = 32,
  41         AHCI_MAX_CLKS           = 5,
  42         AHCI_MAX_SG             = 168, /* hardware max is 64K */
  43         AHCI_DMA_BOUNDARY       = 0xffffffff,
  44         AHCI_MAX_CMDS           = 32,
  45         AHCI_CMD_SZ             = 32,
  46         AHCI_CMD_SLOT_SZ        = AHCI_MAX_CMDS * AHCI_CMD_SZ,
  47         AHCI_RX_FIS_SZ          = 256,
  48         AHCI_CMD_TBL_CDB        = 0x40,
  49         AHCI_CMD_TBL_HDR_SZ     = 0x80,
  50         AHCI_CMD_TBL_SZ         = AHCI_CMD_TBL_HDR_SZ + (AHCI_MAX_SG * 16),
  51         AHCI_CMD_TBL_AR_SZ      = AHCI_CMD_TBL_SZ * AHCI_MAX_CMDS,
  52         AHCI_PORT_PRIV_DMA_SZ   = AHCI_CMD_SLOT_SZ + AHCI_CMD_TBL_AR_SZ +
  53                                   AHCI_RX_FIS_SZ,
  54         AHCI_PORT_PRIV_FBS_DMA_SZ       = AHCI_CMD_SLOT_SZ +
  55                                           AHCI_CMD_TBL_AR_SZ +
  56                                           (AHCI_RX_FIS_SZ * 16),
  57         AHCI_IRQ_ON_SG          = (1 << 31),
  58         AHCI_CMD_ATAPI          = (1 << 5),
  59         AHCI_CMD_WRITE          = (1 << 6),
  60         AHCI_CMD_PREFETCH       = (1 << 7),
  61         AHCI_CMD_RESET          = (1 << 8),
  62         AHCI_CMD_CLR_BUSY       = (1 << 10),
  63
  64         RX_FIS_PIO_SETUP        = 0x20, /* offset of PIO Setup FIS data */
  65         RX_FIS_D2H_REG          = 0x40, /* offset of D2H Register FIS data */
  66         RX_FIS_SDB              = 0x58, /* offset of SDB FIS data */
  67         RX_FIS_UNK              = 0x60, /* offset of Unknown FIS data */
  68
  69         /* global controller registers */
  70         HOST_CAP                = 0x00, /* host capabilities */
  71         HOST_CTL                = 0x04, /* global host control */
  72         HOST_IRQ_STAT           = 0x08, /* interrupt status */
  73         HOST_PORTS_IMPL         = 0x0c, /* bitmap of implemented ports */
  74         HOST_VERSION            = 0x10, /* AHCI spec. version compliancy */
  75         HOST_EM_LOC             = 0x1c, /* Enclosure Management location */
  76         HOST_EM_CTL             = 0x20, /* Enclosure Management Control */
  77         HOST_CAP2               = 0x24, /* host capabilities, extended */
  78
  79         /* HOST_CTL bits */
  80         HOST_RESET              = (1 << 0),  /* reset controller; self-clear */
  81         HOST_IRQ_EN             = (1 << 1),  /* global IRQ enable */
  82         HOST_MRSM               = (1 << 2),  /* MSI Revert to Single Message */
  83         HOST_AHCI_EN            = (1 << 31), /* AHCI enabled */
  84
  85         /* HOST_CAP bits */
  86         HOST_CAP_SXS            = (1 << 5),  /* Supports External SATA */
  87         HOST_CAP_EMS            = (1 << 6),  /* Enclosure Management support */
  88         HOST_CAP_CCC            = (1 << 7),  /* Command Completion Coalescing */
  89         HOST_CAP_PART           = (1 << 13), /* Partial state capable */
  90         HOST_CAP_SSC            = (1 << 14), /* Slumber state capable */
  91         HOST_CAP_PIO_MULTI      = (1 << 15), /* PIO multiple DRQ support */
  92         HOST_CAP_FBS            = (1 << 16), /* FIS-based switching support */
  93         HOST_CAP_PMP            = (1 << 17), /* Port Multiplier support */
  94         HOST_CAP_ONLY           = (1 << 18), /* Supports AHCI mode only */
  95         HOST_CAP_CLO            = (1 << 24), /* Command List Override support */
  96         HOST_CAP_LED            = (1 << 25), /* Supports activity LED */
  97         HOST_CAP_ALPM           = (1 << 26), /* Aggressive Link PM support */
  98         HOST_CAP_SSS            = (1 << 27), /* Staggered Spin-up */
  99         HOST_CAP_MPS            = (1 << 28), /* Mechanical presence switch */
 100         HOST_CAP_SNTF           = (1 << 29), /* SNotification register */
 101         HOST_CAP_NCQ            = (1 << 30), /* Native Command Queueing */
 102         HOST_CAP_64             = (1 << 31), /* PCI DAC (64-bit DMA) support */
 103
 104         /* HOST_CAP2 bits */
 105         HOST_CAP2_BOH           = (1 << 0),  /* BIOS/OS handoff supported */
 106         HOST_CAP2_NVMHCI        = (1 << 1),  /* NVMHCI supported */
 107         HOST_CAP2_APST          = (1 << 2),  /* Automatic partial to slumber */
 108         HOST_CAP2_SDS           = (1 << 3),  /* Support device sleep */
 109         HOST_CAP2_SADM          = (1 << 4),  /* Support aggressive DevSlp */
 110         HOST_CAP2_DESO          = (1 << 5),  /* DevSlp from slumber only */
 111
 112         /* registers for each SATA port */
 113         PORT_LST_ADDR           = 0x00, /* command list DMA addr */
 114         PORT_LST_ADDR_HI        = 0x04, /* command list DMA addr hi */
 115         PORT_FIS_ADDR           = 0x08, /* FIS rx buf addr */
 116         PORT_FIS_ADDR_HI        = 0x0c, /* FIS rx buf addr hi */
 117         PORT_IRQ_STAT           = 0x10, /* interrupt status */
 118         PORT_IRQ_MASK           = 0x14, /* interrupt enable/disable mask */
 119         PORT_CMD                = 0x18, /* port command */
 120         PORT_TFDATA             = 0x20, /* taskfile data */
 121         PORT_SIG                = 0x24, /* device TF signature */
 122         PORT_CMD_ISSUE          = 0x38, /* command issue */
 123         PORT_SCR_STAT           = 0x28, /* SATA phy register: SStatus */
 124         PORT_SCR_CTL            = 0x2c, /* SATA phy register: SControl */
 125         PORT_SCR_ERR            = 0x30, /* SATA phy register: SError */
 126         PORT_SCR_ACT            = 0x34, /* SATA phy register: SActive */
 127         PORT_SCR_NTF            = 0x3c, /* SATA phy register: SNotification */
 128         PORT_FBS                = 0x40, /* FIS-based Switching */
 129         PORT_DEVSLP             = 0x44, /* device sleep */
 130
 131         /* PORT_IRQ_{STAT,MASK} bits */
 132         PORT_IRQ_COLD_PRES      = (1 << 31), /* cold presence detect */
 133         PORT_IRQ_TF_ERR         = (1 << 30), /* task file error */
 134         PORT_IRQ_HBUS_ERR       = (1 << 29), /* host bus fatal error */
 135         PORT_IRQ_HBUS_DATA_ERR  = (1 << 28), /* host bus data error */
 136         PORT_IRQ_IF_ERR         = (1 << 27), /* interface fatal error */
 137         PORT_IRQ_IF_NONFATAL    = (1 << 26), /* interface non-fatal error */
 138         PORT_IRQ_OVERFLOW       = (1 << 24), /* xfer exhausted available S/G */
 139         PORT_IRQ_BAD_PMP        = (1 << 23), /* incorrect port multiplier */
 140
 141         PORT_IRQ_PHYRDY         = (1 << 22), /* PhyRdy changed */
 142         PORT_IRQ_DEV_ILCK       = (1 << 7), /* device interlock */
 143         PORT_IRQ_CONNECT        = (1 << 6), /* port connect change status */
 144         PORT_IRQ_SG_DONE        = (1 << 5), /* descriptor processed */
 145         PORT_IRQ_UNK_FIS        = (1 << 4), /* unknown FIS rx'd */
 146         PORT_IRQ_SDB_FIS        = (1 << 3), /* Set Device Bits FIS rx'd */
 147         PORT_IRQ_DMAS_FIS       = (1 << 2), /* DMA Setup FIS rx'd */
 148         PORT_IRQ_PIOS_FIS       = (1 << 1), /* PIO Setup FIS rx'd */
 149         PORT_IRQ_D2H_REG_FIS    = (1 << 0), /* D2H Register FIS rx'd */
 150
 151         PORT_IRQ_FREEZE         = PORT_IRQ_HBUS_ERR |
 152                                   PORT_IRQ_IF_ERR |
 153                                   PORT_IRQ_CONNECT |
 154                                   PORT_IRQ_PHYRDY |
 155                                   PORT_IRQ_UNK_FIS |
 156                                   PORT_IRQ_BAD_PMP,
 157         PORT_IRQ_ERROR          = PORT_IRQ_FREEZE |
 158                                   PORT_IRQ_TF_ERR |
 159                                   PORT_IRQ_HBUS_DATA_ERR,
 160         DEF_PORT_IRQ            = PORT_IRQ_ERROR | PORT_IRQ_SG_DONE |
 161                                   PORT_IRQ_SDB_FIS | PORT_IRQ_DMAS_FIS |
 162                                   PORT_IRQ_PIOS_FIS | PORT_IRQ_D2H_REG_FIS,
 163
 164         /* PORT_CMD bits */
 165         PORT_CMD_ASP            = (1 << 27), /* Aggressive Slumber/Partial */
 166         PORT_CMD_ALPE           = (1 << 26), /* Aggressive Link PM enable */
 167         PORT_CMD_ATAPI          = (1 << 24), /* Device is ATAPI */
 168         PORT_CMD_FBSCP          = (1 << 22), /* FBS Capable Port */
 169         PORT_CMD_ESP            = (1 << 21), /* External Sata Port */
 170         PORT_CMD_HPCP           = (1 << 18), /* HotPlug Capable Port */
 171         PORT_CMD_PMP            = (1 << 17), /* PMP attached */
 172         PORT_CMD_LIST_ON        = (1 << 15), /* cmd list DMA engine running */
 173         PORT_CMD_FIS_ON         = (1 << 14), /* FIS DMA engine running */
 174         PORT_CMD_FIS_RX         = (1 << 4), /* Enable FIS receive DMA engine */
 175         PORT_CMD_CLO            = (1 << 3), /* Command list override */
 176         PORT_CMD_POWER_ON       = (1 << 2), /* Power up device */
 177         PORT_CMD_SPIN_UP        = (1 << 1), /* Spin up device */
 178         PORT_CMD_START          = (1 << 0), /* Enable port DMA engine */
 179
 180         PORT_CMD_ICC_MASK       = (0xf << 28), /* i/f ICC state mask */
 181         PORT_CMD_ICC_ACTIVE     = (0x1 << 28), /* Put i/f in active state */
 182         PORT_CMD_ICC_PARTIAL    = (0x2 << 28), /* Put i/f in partial state */
 183         PORT_CMD_ICC_SLUMBER    = (0x6 << 28), /* Put i/f in slumber state */
 184
 185         /* PORT_FBS bits */
 186         PORT_FBS_DWE_OFFSET     = 16, /* FBS device with error offset */
 187         PORT_FBS_ADO_OFFSET     = 12, /* FBS active dev optimization offset */
 188         PORT_FBS_DEV_OFFSET     = 8,  /* FBS device to issue offset */
 189         PORT_FBS_DEV_MASK       = (0xf << PORT_FBS_DEV_OFFSET),  /* FBS.DEV */
 190         PORT_FBS_SDE            = (1 << 2), /* FBS single device error */
 191         PORT_FBS_DEC            = (1 << 1), /* FBS device error clear */
 192         PORT_FBS_EN             = (1 << 0), /* Enable FBS */
 193
 194         /* PORT_DEVSLP bits */
 195         PORT_DEVSLP_DM_OFFSET   = 25,             /* DITO multiplier offset */
 196         PORT_DEVSLP_DM_MASK     = (0xf << 25),    /* DITO multiplier mask */
 197         PORT_DEVSLP_DITO_OFFSET = 15,             /* DITO offset */
 198         PORT_DEVSLP_MDAT_OFFSET = 10,             /* Minimum assertion time */
 199         PORT_DEVSLP_DETO_OFFSET = 2,              /* DevSlp exit timeout */
 200         PORT_DEVSLP_DSP         = (1 << 1),       /* DevSlp present */
 201         PORT_DEVSLP_ADSE        = (1 << 0),       /* Aggressive DevSlp enable */
 202
 203         /* hpriv->flags bits */
 204
 205 #define AHCI_HFLAGS(flags)              .private_data   = (void *)(flags)
 206
 207         AHCI_HFLAG_NO_NCQ               = (1 << 0),
 208         AHCI_HFLAG_IGN_IRQ_IF_ERR       = (1 << 1), /* ignore IRQ_IF_ERR */
 209         AHCI_HFLAG_IGN_SERR_INTERNAL    = (1 << 2), /* ignore SERR_INTERNAL */
 210         AHCI_HFLAG_32BIT_ONLY           = (1 << 3), /* force 32bit */
 211         AHCI_HFLAG_MV_PATA              = (1 << 4), /* PATA port */
 212         AHCI_HFLAG_NO_MSI               = (1 << 5), /* no PCI MSI */
 213         AHCI_HFLAG_NO_PMP               = (1 << 6), /* no PMP */
 214         AHCI_HFLAG_SECT255              = (1 << 8), /* max 255 sectors */
 215         AHCI_HFLAG_YES_NCQ              = (1 << 9), /* force NCQ cap on */
 216         AHCI_HFLAG_NO_SUSPEND           = (1 << 10), /* don't suspend */
 217         AHCI_HFLAG_SRST_TOUT_IS_OFFLINE = (1 << 11), /* treat SRST timeout as
 218                                                         link offline */
 219         AHCI_HFLAG_NO_SNTF              = (1 << 12), /* no sntf */
 220         AHCI_HFLAG_NO_FPDMA_AA          = (1 << 13), /* no FPDMA AA */
 221         AHCI_HFLAG_YES_FBS              = (1 << 14), /* force FBS cap on */
 222         AHCI_HFLAG_DELAY_ENGINE         = (1 << 15), /* do not start engine on
 223                                                         port start (wait until
 224                                                         error-handling stage) */
 225         AHCI_HFLAG_NO_DEVSLP            = (1 << 17), /* no device sleep */
 226         AHCI_HFLAG_NO_FBS               = (1 << 18), /* no FBS */
 227
 228 #ifdef CONFIG_PCI_MSI
 229         AHCI_HFLAG_MULTI_MSI            = (1 << 20), /* per-port MSI(-X) */
 230 #else
 231         /* compile out MSI infrastructure */
 232         AHCI_HFLAG_MULTI_MSI            = 0,
 233 #endif
 234         AHCI_HFLAG_WAKE_BEFORE_STOP     = (1 << 22), /* wake before DMA stop */
 235         AHCI_HFLAG_YES_ALPM             = (1 << 23), /* force ALPM cap on */
 236         AHCI_HFLAG_NO_WRITE_TO_RO       = (1 << 24), /* don't write to read
 237                                                         only registers */
 238         AHCI_HFLAG_IS_MOBILE            = (1 << 25), /* mobile chipset, use
 239                                                         SATA_MOBILE_LPM_POLICY
 240                                                         as default lpm_policy */
 241         AHCI_HFLAG_SUSPEND_PHYS         = (1 << 26), /* handle PHYs during
 242                                                         suspend/resume */
 243         AHCI_HFLAG_IGN_NOTSUPP_POWER_ON = (1 << 27), /* ignore -EOPNOTSUPP
 244                                                         from phy_power_on() */
 245         AHCI_HFLAG_NO_SXS               = (1 << 28), /* SXS not supported */
 246
 247         /* ap->flags bits */
 248
 249         AHCI_FLAG_COMMON                = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA |
 250                                           ATA_FLAG_ACPI_SATA | ATA_FLAG_AN,
 251
 252         ICH_MAP                         = 0x90, /* ICH MAP register */
 253         PCS_6                           = 0x92, /* 6 port PCS */
 254         PCS_7                           = 0x94, /* 7+ port PCS (Denverton) */
 255
 256         /* em constants */
 257         EM_MAX_SLOTS                    = 8,
 258         EM_MAX_RETRY                    = 5,
 259
 260         /* em_ctl bits */
 261         EM_CTL_RST              = (1 << 9), /* Reset */
 262         EM_CTL_TM               = (1 << 8), /* Transmit Message */
 263         EM_CTL_MR               = (1 << 0), /* Message Received */
 264         EM_CTL_ALHD             = (1 << 26), /* Activity LED */
 265         EM_CTL_XMT              = (1 << 25), /* Transmit Only */
 266         EM_CTL_SMB              = (1 << 24), /* Single Message Buffer */
 267         EM_CTL_SGPIO            = (1 << 19), /* SGPIO messages supported */
 268         EM_CTL_SES              = (1 << 18), /* SES-2 messages supported */
 269         EM_CTL_SAFTE            = (1 << 17), /* SAF-TE messages supported */
 270         EM_CTL_LED              = (1 << 16), /* LED messages supported */
 271
 272         /* em message type */
 273         EM_MSG_TYPE_LED         = (1 << 0), /* LED */
 274         EM_MSG_TYPE_SAFTE       = (1 << 1), /* SAF-TE */
 275         EM_MSG_TYPE_SES2        = (1 << 2), /* SES-2 */
 276         EM_MSG_TYPE_SGPIO       = (1 << 3), /* SGPIO */
 277 };
 278
 279 struct ahci_cmd_hdr {
 280         __le32                  opts;
 281         __le32                  status;
 282         __le32                  tbl_addr;
 283         __le32                  tbl_addr_hi;
 284         __le32                  reserved[4];
 285 };
 286
 287 struct ahci_sg {
 288         __le32                  addr;
 289         __le32                  addr_hi;
 290         __le32                  reserved;
 291         __le32                  flags_size;
 292 };
 293
 294 struct ahci_em_priv {
 295         enum sw_activity blink_policy;
 296         struct timer_list timer;
 297         unsigned long saved_activity;
 298         unsigned long activity;
 299         unsigned long led_state;
 300         struct ata_link *link;
 301 };
 302
 303 struct ahci_port_priv {
 304         struct ata_link         *active_link;
 305         struct ahci_cmd_hdr     *cmd_slot;
 306         dma_addr_t              cmd_slot_dma;
 307         void                    *cmd_tbl;
 308         dma_addr_t              cmd_tbl_dma;
 309         void                    *rx_fis;
 310         dma_addr_t              rx_fis_dma;
 311         /* for NCQ spurious interrupt analysis */
 312         unsigned int            ncq_saw_d2h:1;
 313         unsigned int            ncq_saw_dmas:1;
 314         unsigned int            ncq_saw_sdb:1;
 315         spinlock_t              lock;           /* protects parent ata_port */
 316         u32                     intr_mask;      /* interrupts to enable */
 317         bool                    fbs_supported;  /* set iff FBS is supported */
 318         bool                    fbs_enabled;    /* set iff FBS is enabled */
 319         int                     fbs_last_dev;   /* save FBS.DEV of last FIS */
 320         /* enclosure management info per PM slot */
 321         struct ahci_em_priv     em_priv[EM_MAX_SLOTS];
 322         char                    *irq_desc;      /* desc in /proc/interrupts */
 323 };
 324
 325 struct ahci_host_priv {
 326         /* Input fields */
 327         unsigned int            flags;          /* AHCI_HFLAG_* */
 328         u32                     force_port_map; /* force port map */
 329         u32                     mask_port_map;  /* mask out particular bits */
 330
 331         void __iomem *          mmio;           /* bus-independent mem map */
 332         u32                     cap;            /* cap to use */
 333         u32                     cap2;           /* cap2 to use */
 334         u32                     version;        /* cached version */
 335         u32                     port_map;       /* port map to use */
 336         u32                     saved_cap;      /* saved initial cap */
 337         u32                     saved_cap2;     /* saved initial cap2 */
 338         u32                     saved_port_map; /* saved initial port_map */
 339         u32                     em_loc; /* enclosure management location */
 340         u32                     em_buf_sz;      /* EM buffer size in byte */
 341         u32                     em_msg_type;    /* EM message type */
 342         u32                     remapped_nvme;  /* NVMe remapped device count */
 343         bool                    got_runtime_pm; /* Did we do pm_runtime_get? */
 344         struct clk              *clks[AHCI_MAX_CLKS]; /* Optional */
 345         struct reset_control    *rsts;          /* Optional */
 346         struct regulator        **target_pwrs;  /* Optional */
 347         struct regulator        *ahci_regulator;/* Optional */
 348         struct regulator        *phy_regulator;/* Optional */
 349         /*
 350          * If platform uses PHYs. There is a 1:1 relation between the port number and
 351          * the PHY position in this array.
 352          */
 353         struct phy              **phys;
 354         unsigned                nports;         /* Number of ports */
 355         void                    *plat_data;     /* Other platform data */
 356         unsigned int            irq;            /* interrupt line */
 357         /*
 358          * Optional ahci_start_engine override, if not set this gets set to the
 359          * default ahci_start_engine during ahci_save_initial_config, this can
 360          * be overridden anytime before the host is activated.
 361          */
 362         void                    (*start_engine)(struct ata_port *ap);
 363         /*
 364          * Optional ahci_stop_engine override, if not set this gets set to the
 365          * default ahci_stop_engine during ahci_save_initial_config, this can
 366          * be overridden anytime before the host is activated.
 367          */
 368         int                     (*stop_engine)(struct ata_port *ap);
 369
 370         irqreturn_t             (*irq_handler)(int irq, void *dev_instance);
 371
 372         /* only required for per-port MSI(-X) support */
 373         int                     (*get_irq_vector)(struct ata_host *host,
 374                                                   int port);
 375 };
 376
 377 extern int ahci_ignore_sss;
 378
 379 extern struct device_attribute *ahci_shost_attrs[];
 380 extern struct device_attribute *ahci_sdev_attrs[];
 381
 382 /*
 383  * This must be instantiated by the edge drivers.  Read the comments
 384  * for ATA_BASE_SHT
 385  */
 386 #define AHCI_SHT(drv_name)                                              \
 387         __ATA_BASE_SHT(drv_name),                                       \
 388         .can_queue              = AHCI_MAX_CMDS,                        \
 389         .sg_tablesize           = AHCI_MAX_SG,                          \
 390         .dma_boundary           = AHCI_DMA_BOUNDARY,                    \
 391         .shost_attrs            = ahci_shost_attrs,                     \
 392         .sdev_attrs             = ahci_sdev_attrs,                      \
 393         .change_queue_depth     = ata_scsi_change_queue_depth,          \
 394         .tag_alloc_policy       = BLK_TAG_ALLOC_RR,                     \
 395         .slave_configure        = ata_scsi_slave_config
 396
 397 extern struct ata_port_operations ahci_ops;
 398 extern struct ata_port_operations ahci_platform_ops;
 399 extern struct ata_port_operations ahci_pmp_retry_srst_ops;
 400
 401 unsigned int ahci_dev_classify(struct ata_port *ap);
 402 void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag,
 403                         u32 opts);
 404 void ahci_save_initial_config(struct device *dev,
 405                               struct ahci_host_priv *hpriv);
 406 void ahci_init_controller(struct ata_host *host);
 407 int ahci_reset_controller(struct ata_host *host);
 408
 409 int ahci_do_softreset(struct ata_link *link, unsigned int *class,
 410                       int pmp, unsigned long deadline,
 411                       int (*check_ready)(struct ata_link *link));
 412
 413 int ahci_do_hardreset(struct ata_link *link, unsigned int *class,
 414                       unsigned long deadline, bool *online);
 415
 416 unsigned int ahci_qc_issue(struct ata_queued_cmd *qc);
 417 int ahci_stop_engine(struct ata_port *ap);
 418 void ahci_start_fis_rx(struct ata_port *ap);
 419 void ahci_start_engine(struct ata_port *ap);
 420 int ahci_check_ready(struct ata_link *link);
 421 int ahci_kick_engine(struct ata_port *ap);
 422 int ahci_port_resume(struct ata_port *ap);
 423 void ahci_set_em_messages(struct ahci_host_priv *hpriv,
 424                           struct ata_port_info *pi);
 425 int ahci_reset_em(struct ata_host *host);
 426 void ahci_print_info(struct ata_host *host, const char *scc_s);
 427 int ahci_host_activate(struct ata_host *host, struct scsi_host_template *sht);
 428 void ahci_error_handler(struct ata_port *ap);
 429 u32 ahci_handle_port_intr(struct ata_host *host, u32 irq_masked);
 430
 431 static inline void __iomem *__ahci_port_base(struct ata_host *host,
 432                                              unsigned int port_no)
 433 {
 434         struct ahci_host_priv *hpriv = host->private_data;
 435         void __iomem *mmio = hpriv->mmio;
 436
 437         return mmio + 0x100 + (port_no * 0x80);
 438 }
 439
 440 static inline void __iomem *ahci_port_base(struct ata_port *ap)
 441 {
 442         return __ahci_port_base(ap->host, ap->port_no);
 443 }
 444
 445 static inline int ahci_nr_ports(u32 cap)
 446 {
 447         return (cap & 0x1f) + 1;
 448 }
 449
 450 #endif /* _AHCI_H */