drivers/ata/ahci.h

   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
  51 enum {
  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_PIO_SETUP        = 0x20, /* offset of PIO Setup FIS data */
  76         RX_FIS_D2H_REG          = 0x40, /* offset of D2H Register FIS data */
  77         RX_FIS_SDB              = 0x58, /* offset of SDB FIS data */
  78         RX_FIS_UNK              = 0x60, /* offset of Unknown FIS data */
  79
  80         /* global controller registers */
  81         HOST_CAP                = 0x00, /* host capabilities */
  82         HOST_CTL                = 0x04, /* global host control */
  83         HOST_IRQ_STAT           = 0x08, /* interrupt status */
  84         HOST_PORTS_IMPL         = 0x0c, /* bitmap of implemented ports */
  85         HOST_VERSION            = 0x10, /* AHCI spec. version compliancy */
  86         HOST_EM_LOC             = 0x1c, /* Enclosure Management location */
  87         HOST_EM_CTL             = 0x20, /* Enclosure Management Control */
  88         HOST_CAP2               = 0x24, /* host capabilities, extended */
  89
  90         /* HOST_CTL bits */
  91         HOST_RESET              = (1 << 0),  /* reset controller; self-clear */
  92         HOST_IRQ_EN             = (1 << 1),  /* global IRQ enable */
  93         HOST_AHCI_EN            = (1 << 31), /* AHCI enabled */
  94
  95         /* HOST_CAP bits */
  96         HOST_CAP_SXS            = (1 << 5),  /* Supports External SATA */
  97         HOST_CAP_EMS            = (1 << 6),  /* Enclosure Management support */
  98         HOST_CAP_CCC            = (1 << 7),  /* Command Completion Coalescing */
  99         HOST_CAP_PART           = (1 << 13), /* Partial state capable */
 100         HOST_CAP_SSC            = (1 << 14), /* Slumber state capable */
 101         HOST_CAP_PIO_MULTI      = (1 << 15), /* PIO multiple DRQ support */
 102         HOST_CAP_FBS            = (1 << 16), /* FIS-based switching support */
 103         HOST_CAP_PMP            = (1 << 17), /* Port Multiplier support */
 104         HOST_CAP_ONLY           = (1 << 18), /* Supports AHCI mode only */
 105         HOST_CAP_CLO            = (1 << 24), /* Command List Override support */
 106         HOST_CAP_LED            = (1 << 25), /* Supports activity LED */
 107         HOST_CAP_ALPM           = (1 << 26), /* Aggressive Link PM support */
 108         HOST_CAP_SSS            = (1 << 27), /* Staggered Spin-up */
 109         HOST_CAP_MPS            = (1 << 28), /* Mechanical presence switch */
 110         HOST_CAP_SNTF           = (1 << 29), /* SNotification register */
 111         HOST_CAP_NCQ            = (1 << 30), /* Native Command Queueing */
 112         HOST_CAP_64             = (1 << 31), /* PCI DAC (64-bit DMA) support */
 113
 114         /* HOST_CAP2 bits */
 115         HOST_CAP2_BOH           = (1 << 0),  /* BIOS/OS handoff supported */
 116         HOST_CAP2_NVMHCI        = (1 << 1),  /* NVMHCI supported */
 117         HOST_CAP2_APST          = (1 << 2),  /* Automatic partial to slumber */
 118
 119         /* registers for each SATA port */
 120         PORT_LST_ADDR           = 0x00, /* command list DMA addr */
 121         PORT_LST_ADDR_HI        = 0x04, /* command list DMA addr hi */
 122         PORT_FIS_ADDR           = 0x08, /* FIS rx buf addr */
 123         PORT_FIS_ADDR_HI        = 0x0c, /* FIS rx buf addr hi */
 124         PORT_IRQ_STAT           = 0x10, /* interrupt status */
 125         PORT_IRQ_MASK           = 0x14, /* interrupt enable/disable mask */
 126         PORT_CMD                = 0x18, /* port command */
 127         PORT_TFDATA             = 0x20, /* taskfile data */
 128         PORT_SIG                = 0x24, /* device TF signature */
 129         PORT_CMD_ISSUE          = 0x38, /* command issue */
 130         PORT_SCR_STAT           = 0x28, /* SATA phy register: SStatus */
 131         PORT_SCR_CTL            = 0x2c, /* SATA phy register: SControl */
 132         PORT_SCR_ERR            = 0x30, /* SATA phy register: SError */
 133         PORT_SCR_ACT            = 0x34, /* SATA phy register: SActive */
 134         PORT_SCR_NTF            = 0x3c, /* SATA phy register: SNotification */
 135         PORT_FBS                = 0x40, /* FIS-based Switching */
 136
 137         /* PORT_IRQ_{STAT,MASK} bits */
 138         PORT_IRQ_COLD_PRES      = (1 << 31), /* cold presence detect */
 139         PORT_IRQ_TF_ERR         = (1 << 30), /* task file error */
 140         PORT_IRQ_HBUS_ERR       = (1 << 29), /* host bus fatal error */
 141         PORT_IRQ_HBUS_DATA_ERR  = (1 << 28), /* host bus data error */
 142         PORT_IRQ_IF_ERR         = (1 << 27), /* interface fatal error */
 143         PORT_IRQ_IF_NONFATAL    = (1 << 26), /* interface non-fatal error */
 144         PORT_IRQ_OVERFLOW       = (1 << 24), /* xfer exhausted available S/G */
 145         PORT_IRQ_BAD_PMP        = (1 << 23), /* incorrect port multiplier */
 146
 147         PORT_IRQ_PHYRDY         = (1 << 22), /* PhyRdy changed */
 148         PORT_IRQ_DEV_ILCK       = (1 << 7), /* device interlock */
 149         PORT_IRQ_CONNECT        = (1 << 6), /* port connect change status */
 150         PORT_IRQ_SG_DONE        = (1 << 5), /* descriptor processed */
 151         PORT_IRQ_UNK_FIS        = (1 << 4), /* unknown FIS rx'd */
 152         PORT_IRQ_SDB_FIS        = (1 << 3), /* Set Device Bits FIS rx'd */
 153         PORT_IRQ_DMAS_FIS       = (1 << 2), /* DMA Setup FIS rx'd */
 154         PORT_IRQ_PIOS_FIS       = (1 << 1), /* PIO Setup FIS rx'd */
 155         PORT_IRQ_D2H_REG_FIS    = (1 << 0), /* D2H Register FIS rx'd */
 156
 157         PORT_IRQ_FREEZE         = PORT_IRQ_HBUS_ERR |
 158                                   PORT_IRQ_IF_ERR |
 159                                   PORT_IRQ_CONNECT |
 160                                   PORT_IRQ_PHYRDY |
 161                                   PORT_IRQ_UNK_FIS |
 162                                   PORT_IRQ_BAD_PMP,
 163         PORT_IRQ_ERROR          = PORT_IRQ_FREEZE |
 164                                   PORT_IRQ_TF_ERR |
 165                                   PORT_IRQ_HBUS_DATA_ERR,
 166         DEF_PORT_IRQ            = PORT_IRQ_ERROR | PORT_IRQ_SG_DONE |
 167                                   PORT_IRQ_SDB_FIS | PORT_IRQ_DMAS_FIS |
 168                                   PORT_IRQ_PIOS_FIS | PORT_IRQ_D2H_REG_FIS,
 169
 170         /* PORT_CMD bits */
 171         PORT_CMD_ASP            = (1 << 27), /* Aggressive Slumber/Partial */
 172         PORT_CMD_ALPE           = (1 << 26), /* Aggressive Link PM enable */
 173         PORT_CMD_ATAPI          = (1 << 24), /* Device is ATAPI */
 174         PORT_CMD_FBSCP          = (1 << 22), /* FBS Capable Port */
 175         PORT_CMD_PMP            = (1 << 17), /* PMP attached */
 176         PORT_CMD_LIST_ON        = (1 << 15), /* cmd list DMA engine running */
 177         PORT_CMD_FIS_ON         = (1 << 14), /* FIS DMA engine running */
 178         PORT_CMD_FIS_RX         = (1 << 4), /* Enable FIS receive DMA engine */
 179         PORT_CMD_CLO            = (1 << 3), /* Command list override */
 180         PORT_CMD_POWER_ON       = (1 << 2), /* Power up device */
 181         PORT_CMD_SPIN_UP        = (1 << 1), /* Spin up device */
 182         PORT_CMD_START          = (1 << 0), /* Enable port DMA engine */
 183
 184         PORT_CMD_ICC_MASK       = (0xf << 28), /* i/f ICC state mask */
 185         PORT_CMD_ICC_ACTIVE     = (0x1 << 28), /* Put i/f in active state */
 186         PORT_CMD_ICC_PARTIAL    = (0x2 << 28), /* Put i/f in partial state */
 187         PORT_CMD_ICC_SLUMBER    = (0x6 << 28), /* Put i/f in slumber state */
 188
 189         PORT_FBS_DWE_OFFSET     = 16, /* FBS device with error offset */
 190         PORT_FBS_ADO_OFFSET     = 12, /* FBS active dev optimization offset */
 191         PORT_FBS_DEV_OFFSET     = 8,  /* FBS device to issue offset */
 192         PORT_FBS_DEV_MASK       = (0xf << PORT_FBS_DEV_OFFSET),  /* FBS.DEV */
 193         PORT_FBS_SDE            = (1 << 2), /* FBS single device error */
 194         PORT_FBS_DEC            = (1 << 1), /* FBS device error clear */
 195         PORT_FBS_EN             = (1 << 0), /* Enable FBS */
 196
 197         /* hpriv->flags bits */
 198         AHCI_HFLAG_NO_NCQ               = (1 << 0),
 199         AHCI_HFLAG_IGN_IRQ_IF_ERR       = (1 << 1), /* ignore IRQ_IF_ERR */
 200         AHCI_HFLAG_IGN_SERR_INTERNAL    = (1 << 2), /* ignore SERR_INTERNAL */
 201         AHCI_HFLAG_32BIT_ONLY           = (1 << 3), /* force 32bit */
 202         AHCI_HFLAG_MV_PATA              = (1 << 4), /* PATA port */
 203         AHCI_HFLAG_NO_MSI               = (1 << 5), /* no PCI MSI */
 204         AHCI_HFLAG_NO_PMP               = (1 << 6), /* no PMP */
 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_PIO_DMA |
 217                                           ATA_FLAG_ACPI_SATA | ATA_FLAG_AN,
 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_MR               = (1 << 0), /* Message Received */
 229         EM_CTL_ALHD             = (1 << 26), /* Activity LED */
 230         EM_CTL_XMT              = (1 << 25), /* Transmit Only */
 231         EM_CTL_SMB              = (1 << 24), /* Single Message Buffer */
 232         EM_CTL_SGPIO            = (1 << 19), /* SGPIO messages supported */
 233         EM_CTL_SES              = (1 << 18), /* SES-2 messages supported */
 234         EM_CTL_SAFTE            = (1 << 17), /* SAF-TE messages supported */
 235         EM_CTL_LED              = (1 << 16), /* LED messages supported */
 236
 237         /* em message type */
 238         EM_MSG_TYPE_LED         = (1 << 0), /* LED */
 239         EM_MSG_TYPE_SAFTE       = (1 << 1), /* SAF-TE */
 240         EM_MSG_TYPE_SES2        = (1 << 2), /* SES-2 */
 241         EM_MSG_TYPE_SGPIO       = (1 << 3), /* SGPIO */
 242 };
 243
 244 struct ahci_cmd_hdr {
 245         __le32                  opts;
 246         __le32                  status;
 247         __le32                  tbl_addr;
 248         __le32                  tbl_addr_hi;
 249         __le32                  reserved[4];
 250 };
 251
 252 struct ahci_sg {
 253         __le32                  addr;
 254         __le32                  addr_hi;
 255         __le32                  reserved;
 256         __le32                  flags_size;
 257 };
 258
 259 struct ahci_em_priv {
 260         enum sw_activity blink_policy;
 261         struct timer_list timer;
 262         unsigned long saved_activity;
 263         unsigned long activity;
 264         unsigned long led_state;
 265 };
 266
 267 struct ahci_port_priv {
 268         struct ata_link         *active_link;
 269         struct ahci_cmd_hdr     *cmd_slot;
 270         dma_addr_t              cmd_slot_dma;
 271         void                    *cmd_tbl;
 272         dma_addr_t              cmd_tbl_dma;
 273         void                    *rx_fis;
 274         dma_addr_t              rx_fis_dma;
 275         /* for NCQ spurious interrupt analysis */
 276         unsigned int            ncq_saw_d2h:1;
 277         unsigned int            ncq_saw_dmas:1;
 278         unsigned int            ncq_saw_sdb:1;
 279         u32                     intr_mask;      /* interrupts to enable */
 280         bool                    fbs_supported;  /* set iff FBS is supported */
 281         bool                    fbs_enabled;    /* set iff FBS is enabled */
 282         int                     fbs_last_dev;   /* save FBS.DEV of last FIS */
 283         /* enclosure management info per PM slot */
 284         struct ahci_em_priv     em_priv[EM_MAX_SLOTS];
 285 };
 286
 287 struct ahci_host_priv {
 288         void __iomem *          mmio;           /* bus-independent mem map */
 289         unsigned int            flags;          /* AHCI_HFLAG_* */
 290         u32                     cap;            /* cap to use */
 291         u32                     cap2;           /* cap2 to use */
 292         u32                     port_map;       /* port map to use */
 293         u32                     saved_cap;      /* saved initial cap */
 294         u32                     saved_cap2;     /* saved initial cap2 */
 295         u32                     saved_port_map; /* saved initial port_map */
 296         u32                     em_loc; /* enclosure management location */
 297         u32                     em_buf_sz;      /* EM buffer size in byte */
 298         u32                     em_msg_type;    /* EM message type */
 299 };
 300
 301 extern int ahci_ignore_sss;
 302
 303 extern struct device_attribute *ahci_shost_attrs[];
 304 extern struct device_attribute *ahci_sdev_attrs[];
 305
 306 #define AHCI_SHT(drv_name)                                              \
 307         ATA_NCQ_SHT(drv_name),                                          \
 308         .can_queue              = AHCI_MAX_CMDS - 1,                    \
 309         .sg_tablesize           = AHCI_MAX_SG,                          \
 310         .dma_boundary           = AHCI_DMA_BOUNDARY,                    \
 311         .shost_attrs            = ahci_shost_attrs,                     \
 312         .sdev_attrs             = ahci_sdev_attrs
 313
 314 extern struct ata_port_operations ahci_ops;
 315 extern struct ata_port_operations ahci_pmp_retry_srst_ops;
 316
 317 void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag,
 318                         u32 opts);
 319 void ahci_save_initial_config(struct device *dev,
 320                               struct ahci_host_priv *hpriv,
 321                               unsigned int force_port_map,
 322                               unsigned int mask_port_map);
 323 void ahci_init_controller(struct ata_host *host);
 324 int ahci_reset_controller(struct ata_host *host);
 325
 326 int ahci_do_softreset(struct ata_link *link, unsigned int *class,
 327                       int pmp, unsigned long deadline,
 328                       int (*check_ready)(struct ata_link *link));
 329
 330 int ahci_stop_engine(struct ata_port *ap);
 331 void ahci_start_engine(struct ata_port *ap);
 332 int ahci_check_ready(struct ata_link *link);
 333 int ahci_kick_engine(struct ata_port *ap);
 334 int ahci_port_resume(struct ata_port *ap);
 335 void ahci_set_em_messages(struct ahci_host_priv *hpriv,
 336                           struct ata_port_info *pi);
 337 int ahci_reset_em(struct ata_host *host);
 338 irqreturn_t ahci_interrupt(int irq, void *dev_instance);
 339 void ahci_print_info(struct ata_host *host, const char *scc_s);
 340
 341 static inline void __iomem *__ahci_port_base(struct ata_host *host,
 342                                              unsigned int port_no)
 343 {
 344         struct ahci_host_priv *hpriv = host->private_data;
 345         void __iomem *mmio = hpriv->mmio;
 346
 347         return mmio + 0x100 + (port_no * 0x80);
 348 }
 349
 350 static inline void __iomem *ahci_port_base(struct ata_port *ap)
 351 {
 352         return __ahci_port_base(ap->host, ap->port_no);
 353 }
 354
 355 static inline int ahci_nr_ports(u32 cap)
 356 {
 357         return (cap & 0x1f) + 1;
 358 }
 359
 360 #endif /* _AHCI_H */