include/linux/ssb/ssb.h

   1 #ifndef LINUX_SSB_H_
   2 #define LINUX_SSB_H_
   3
   4 #include <linux/device.h>
   5 #include <linux/list.h>
   6 #include <linux/types.h>
   7 #include <linux/spinlock.h>
   8 #include <linux/pci.h>
   9 #include <linux/mod_devicetable.h>
  10 #include <linux/dma-mapping.h>
  11
  12 #include <linux/ssb/ssb_regs.h>
  13
  14
  15 struct pcmcia_device;
  16 struct ssb_bus;
  17 struct ssb_driver;
  18
  19 struct ssb_sprom {
  20         u8 revision;
  21         u8 il0mac[6];           /* MAC address for 802.11b/g */
  22         u8 et0mac[6];           /* MAC address for Ethernet */
  23         u8 et1mac[6];           /* MAC address for 802.11a */
  24         u8 et0phyaddr;          /* MII address for enet0 */
  25         u8 et1phyaddr;          /* MII address for enet1 */
  26         u8 et0mdcport;          /* MDIO for enet0 */
  27         u8 et1mdcport;          /* MDIO for enet1 */
  28         u8 board_rev;           /* Board revision number from SPROM. */
  29         u8 country_code;        /* Country Code */
  30         u8 ant_available_a;     /* A-PHY antenna available bits (up to 4) */
  31         u8 ant_available_bg;    /* B/G-PHY antenna available bits (up to 4) */
  32         u16 pa0b0;
  33         u16 pa0b1;
  34         u16 pa0b2;
  35         u16 pa1b0;
  36         u16 pa1b1;
  37         u16 pa1b2;
  38         u8 gpio0;               /* GPIO pin 0 */
  39         u8 gpio1;               /* GPIO pin 1 */
  40         u8 gpio2;               /* GPIO pin 2 */
  41         u8 gpio3;               /* GPIO pin 3 */
  42         u16 maxpwr_a;           /* A-PHY Amplifier Max Power (in dBm Q5.2) */
  43         u16 maxpwr_bg;          /* B/G-PHY Amplifier Max Power (in dBm Q5.2) */
  44         u8 itssi_a;             /* Idle TSSI Target for A-PHY */
  45         u8 itssi_bg;            /* Idle TSSI Target for B/G-PHY */
  46         u16 boardflags_lo;      /* Boardflags (low 16 bits) */
  47         u16 boardflags_hi;      /* Boardflags (high 16 bits) */
  48
  49         /* Antenna gain values for up to 4 antennas
  50          * on each band. Values in dBm/4 (Q5.2). Negative gain means the
  51          * loss in the connectors is bigger than the gain. */
  52         struct {
  53                 struct {
  54                         s8 a0, a1, a2, a3;
  55                 } ghz24;        /* 2.4GHz band */
  56                 struct {
  57                         s8 a0, a1, a2, a3;
  58                 } ghz5;         /* 5GHz band */
  59         } antenna_gain;
  60
  61         /* TODO - add any parameters needed from rev 2, 3, or 4 SPROMs */
  62 };
  63
  64 /* Information about the PCB the circuitry is soldered on. */
  65 struct ssb_boardinfo {
  66         u16 vendor;
  67         u16 type;
  68         u16 rev;
  69 };
  70
  71
  72 struct ssb_device;
  73 /* Lowlevel read/write operations on the device MMIO.
  74  * Internal, don't use that outside of ssb. */
  75 struct ssb_bus_ops {
  76         u8 (*read8)(struct ssb_device *dev, u16 offset);
  77         u16 (*read16)(struct ssb_device *dev, u16 offset);
  78         u32 (*read32)(struct ssb_device *dev, u16 offset);
  79         void (*write8)(struct ssb_device *dev, u16 offset, u8 value);
  80         void (*write16)(struct ssb_device *dev, u16 offset, u16 value);
  81         void (*write32)(struct ssb_device *dev, u16 offset, u32 value);
  82 #ifdef CONFIG_SSB_BLOCKIO
  83         void (*block_read)(struct ssb_device *dev, void *buffer,
  84                            size_t count, u16 offset, u8 reg_width);
  85         void (*block_write)(struct ssb_device *dev, const void *buffer,
  86                             size_t count, u16 offset, u8 reg_width);
  87 #endif
  88 };
  89
  90
  91 /* Core-ID values. */
  92 #define SSB_DEV_CHIPCOMMON      0x800
  93 #define SSB_DEV_ILINE20         0x801
  94 #define SSB_DEV_SDRAM           0x803
  95 #define SSB_DEV_PCI             0x804
  96 #define SSB_DEV_MIPS            0x805
  97 #define SSB_DEV_ETHERNET        0x806
  98 #define SSB_DEV_V90             0x807
  99 #define SSB_DEV_USB11_HOSTDEV   0x808
 100 #define SSB_DEV_ADSL            0x809
 101 #define SSB_DEV_ILINE100        0x80A
 102 #define SSB_DEV_IPSEC           0x80B
 103 #define SSB_DEV_PCMCIA          0x80D
 104 #define SSB_DEV_INTERNAL_MEM    0x80E
 105 #define SSB_DEV_MEMC_SDRAM      0x80F
 106 #define SSB_DEV_EXTIF           0x811
 107 #define SSB_DEV_80211           0x812
 108 #define SSB_DEV_MIPS_3302       0x816
 109 #define SSB_DEV_USB11_HOST      0x817
 110 #define SSB_DEV_USB11_DEV       0x818
 111 #define SSB_DEV_USB20_HOST      0x819
 112 #define SSB_DEV_USB20_DEV       0x81A
 113 #define SSB_DEV_SDIO_HOST       0x81B
 114 #define SSB_DEV_ROBOSWITCH      0x81C
 115 #define SSB_DEV_PARA_ATA        0x81D
 116 #define SSB_DEV_SATA_XORDMA     0x81E
 117 #define SSB_DEV_ETHERNET_GBIT   0x81F
 118 #define SSB_DEV_PCIE            0x820
 119 #define SSB_DEV_MIMO_PHY        0x821
 120 #define SSB_DEV_SRAM_CTRLR      0x822
 121 #define SSB_DEV_MINI_MACPHY     0x823
 122 #define SSB_DEV_ARM_1176        0x824
 123 #define SSB_DEV_ARM_7TDMI       0x825
 124
 125 /* Vendor-ID values */
 126 #define SSB_VENDOR_BROADCOM     0x4243
 127
 128 /* Some kernel subsystems poke with dev->drvdata, so we must use the
 129  * following ugly workaround to get from struct device to struct ssb_device */
 130 struct __ssb_dev_wrapper {
 131         struct device dev;
 132         struct ssb_device *sdev;
 133 };
 134
 135 struct ssb_device {
 136         /* Having a copy of the ops pointer in each dev struct
 137          * is an optimization. */
 138         const struct ssb_bus_ops *ops;
 139
 140         struct device *dev;
 141
 142         struct ssb_bus *bus;
 143         struct ssb_device_id id;
 144
 145         u8 core_index;
 146         unsigned int irq;
 147
 148         /* Internal-only stuff follows. */
 149         void *drvdata;          /* Per-device data */
 150         void *devtypedata;      /* Per-devicetype (eg 802.11) data */
 151 };
 152
 153 /* Go from struct device to struct ssb_device. */
 154 static inline
 155 struct ssb_device * dev_to_ssb_dev(struct device *dev)
 156 {
 157         struct __ssb_dev_wrapper *wrap;
 158         wrap = container_of(dev, struct __ssb_dev_wrapper, dev);
 159         return wrap->sdev;
 160 }
 161
 162 /* Device specific user data */
 163 static inline
 164 void ssb_set_drvdata(struct ssb_device *dev, void *data)
 165 {
 166         dev->drvdata = data;
 167 }
 168 static inline
 169 void * ssb_get_drvdata(struct ssb_device *dev)
 170 {
 171         return dev->drvdata;
 172 }
 173
 174 /* Devicetype specific user data. This is per device-type (not per device) */
 175 void ssb_set_devtypedata(struct ssb_device *dev, void *data);
 176 static inline
 177 void * ssb_get_devtypedata(struct ssb_device *dev)
 178 {
 179         return dev->devtypedata;
 180 }
 181
 182
 183 struct ssb_driver {
 184         const char *name;
 185         const struct ssb_device_id *id_table;
 186
 187         int (*probe)(struct ssb_device *dev, const struct ssb_device_id *id);
 188         void (*remove)(struct ssb_device *dev);
 189         int (*suspend)(struct ssb_device *dev, pm_message_t state);
 190         int (*resume)(struct ssb_device *dev);
 191         void (*shutdown)(struct ssb_device *dev);
 192
 193         struct device_driver drv;
 194 };
 195 #define drv_to_ssb_drv(_drv) container_of(_drv, struct ssb_driver, drv)
 196
 197 extern int __ssb_driver_register(struct ssb_driver *drv, struct module *owner);
 198 static inline int ssb_driver_register(struct ssb_driver *drv)
 199 {
 200         return __ssb_driver_register(drv, THIS_MODULE);
 201 }
 202 extern void ssb_driver_unregister(struct ssb_driver *drv);
 203
 204
 205
 206
 207 enum ssb_bustype {
 208         SSB_BUSTYPE_SSB,        /* This SSB bus is the system bus */
 209         SSB_BUSTYPE_PCI,        /* SSB is connected to PCI bus */
 210         SSB_BUSTYPE_PCMCIA,     /* SSB is connected to PCMCIA bus */
 211 };
 212
 213 /* board_vendor */
 214 #define SSB_BOARDVENDOR_BCM     0x14E4  /* Broadcom */
 215 #define SSB_BOARDVENDOR_DELL    0x1028  /* Dell */
 216 #define SSB_BOARDVENDOR_HP      0x0E11  /* HP */
 217 /* board_type */
 218 #define SSB_BOARD_BCM94306MP    0x0418
 219 #define SSB_BOARD_BCM4309G      0x0421
 220 #define SSB_BOARD_BCM4306CB     0x0417
 221 #define SSB_BOARD_BCM4309MP     0x040C
 222 #define SSB_BOARD_MP4318        0x044A
 223 #define SSB_BOARD_BU4306        0x0416
 224 #define SSB_BOARD_BU4309        0x040A
 225 /* chip_package */
 226 #define SSB_CHIPPACK_BCM4712S   1       /* Small 200pin 4712 */
 227 #define SSB_CHIPPACK_BCM4712M   2       /* Medium 225pin 4712 */
 228 #define SSB_CHIPPACK_BCM4712L   0       /* Large 340pin 4712 */
 229
 230 #include <linux/ssb/ssb_driver_chipcommon.h>
 231 #include <linux/ssb/ssb_driver_mips.h>
 232 #include <linux/ssb/ssb_driver_extif.h>
 233 #include <linux/ssb/ssb_driver_pci.h>
 234
 235 struct ssb_bus {
 236         /* The MMIO area. */
 237         void __iomem *mmio;
 238
 239         const struct ssb_bus_ops *ops;
 240
 241         /* The core in the basic address register window. (PCI bus only) */
 242         struct ssb_device *mapped_device;
 243         /* Currently mapped PCMCIA segment. (bustype == SSB_BUSTYPE_PCMCIA only) */
 244         u8 mapped_pcmcia_seg;
 245         /* Lock for core and segment switching.
 246          * On PCMCIA-host busses this is used to protect the whole MMIO access. */
 247         spinlock_t bar_lock;
 248
 249         /* The bus this backplane is running on. */
 250         enum ssb_bustype bustype;
 251         /* Pointer to the PCI bus (only valid if bustype == SSB_BUSTYPE_PCI). */
 252         struct pci_dev *host_pci;
 253         /* Pointer to the PCMCIA device (only if bustype == SSB_BUSTYPE_PCMCIA). */
 254         struct pcmcia_device *host_pcmcia;
 255
 256 #ifdef CONFIG_SSB_SPROM
 257         /* Mutex to protect the SPROM writing. */
 258         struct mutex sprom_mutex;
 259 #endif
 260
 261         /* ID information about the Chip. */
 262         u16 chip_id;
 263         u16 chip_rev;
 264         u16 sprom_size;         /* number of words in sprom */
 265         u8 chip_package;
 266
 267         /* List of devices (cores) on the backplane. */
 268         struct ssb_device devices[SSB_MAX_NR_CORES];
 269         u8 nr_devices;
 270
 271         /* Software ID number for this bus. */
 272         unsigned int busnumber;
 273
 274         /* The ChipCommon device (if available). */
 275         struct ssb_chipcommon chipco;
 276         /* The PCI-core device (if available). */
 277         struct ssb_pcicore pcicore;
 278         /* The MIPS-core device (if available). */
 279         struct ssb_mipscore mipscore;
 280         /* The EXTif-core device (if available). */
 281         struct ssb_extif extif;
 282
 283         /* The following structure elements are not available in early
 284          * SSB initialization. Though, they are available for regular
 285          * registered drivers at any stage. So be careful when
 286          * using them in the ssb core code. */
 287
 288         /* ID information about the PCB. */
 289         struct ssb_boardinfo boardinfo;
 290         /* Contents of the SPROM. */
 291         struct ssb_sprom sprom;
 292         /* If the board has a cardbus slot, this is set to true. */
 293         bool has_cardbus_slot;
 294
 295 #ifdef CONFIG_SSB_EMBEDDED
 296         /* Lock for GPIO register access. */
 297         spinlock_t gpio_lock;
 298 #endif /* EMBEDDED */
 299
 300         /* Internal-only stuff follows. Do not touch. */
 301         struct list_head list;
 302 #ifdef CONFIG_SSB_DEBUG
 303         /* Is the bus already powered up? */
 304         bool powered_up;
 305         int power_warn_count;
 306 #endif /* DEBUG */
 307 };
 308
 309 /* The initialization-invariants. */
 310 struct ssb_init_invariants {
 311         /* Versioning information about the PCB. */
 312         struct ssb_boardinfo boardinfo;
 313         /* The SPROM information. That's either stored in an
 314          * EEPROM or NVRAM on the board. */
 315         struct ssb_sprom sprom;
 316         /* If the board has a cardbus slot, this is set to true. */
 317         bool has_cardbus_slot;
 318 };
 319 /* Type of function to fetch the invariants. */
 320 typedef int (*ssb_invariants_func_t)(struct ssb_bus *bus,
 321                                      struct ssb_init_invariants *iv);
 322
 323 /* Register a SSB system bus. get_invariants() is called after the
 324  * basic system devices are initialized.
 325  * The invariants are usually fetched from some NVRAM.
 326  * Put the invariants into the struct pointed to by iv. */
 327 extern int ssb_bus_ssbbus_register(struct ssb_bus *bus,
 328                                    unsigned long baseaddr,
 329                                    ssb_invariants_func_t get_invariants);
 330 #ifdef CONFIG_SSB_PCIHOST
 331 extern int ssb_bus_pcibus_register(struct ssb_bus *bus,
 332                                    struct pci_dev *host_pci);
 333 #endif /* CONFIG_SSB_PCIHOST */
 334 #ifdef CONFIG_SSB_PCMCIAHOST
 335 extern int ssb_bus_pcmciabus_register(struct ssb_bus *bus,
 336                                       struct pcmcia_device *pcmcia_dev,
 337                                       unsigned long baseaddr);
 338 #endif /* CONFIG_SSB_PCMCIAHOST */
 339
 340 extern void ssb_bus_unregister(struct ssb_bus *bus);
 341
 342 /* Set a fallback SPROM.
 343  * See kdoc at the function definition for complete documentation. */
 344 extern int ssb_arch_set_fallback_sprom(const struct ssb_sprom *sprom);
 345
 346 /* Suspend a SSB bus.
 347  * Call this from the parent bus suspend routine. */
 348 extern int ssb_bus_suspend(struct ssb_bus *bus);
 349 /* Resume a SSB bus.
 350  * Call this from the parent bus resume routine. */
 351 extern int ssb_bus_resume(struct ssb_bus *bus);
 352
 353 extern u32 ssb_clockspeed(struct ssb_bus *bus);
 354
 355 /* Is the device enabled in hardware? */
 356 int ssb_device_is_enabled(struct ssb_device *dev);
 357 /* Enable a device and pass device-specific SSB_TMSLOW flags.
 358  * If no device-specific flags are available, use 0. */
 359 void ssb_device_enable(struct ssb_device *dev, u32 core_specific_flags);
 360 /* Disable a device in hardware and pass SSB_TMSLOW flags (if any). */
 361 void ssb_device_disable(struct ssb_device *dev, u32 core_specific_flags);
 362
 363
 364 /* Device MMIO register read/write functions. */
 365 static inline u8 ssb_read8(struct ssb_device *dev, u16 offset)
 366 {
 367         return dev->ops->read8(dev, offset);
 368 }
 369 static inline u16 ssb_read16(struct ssb_device *dev, u16 offset)
 370 {
 371         return dev->ops->read16(dev, offset);
 372 }
 373 static inline u32 ssb_read32(struct ssb_device *dev, u16 offset)
 374 {
 375         return dev->ops->read32(dev, offset);
 376 }
 377 static inline void ssb_write8(struct ssb_device *dev, u16 offset, u8 value)
 378 {
 379         dev->ops->write8(dev, offset, value);
 380 }
 381 static inline void ssb_write16(struct ssb_device *dev, u16 offset, u16 value)
 382 {
 383         dev->ops->write16(dev, offset, value);
 384 }
 385 static inline void ssb_write32(struct ssb_device *dev, u16 offset, u32 value)
 386 {
 387         dev->ops->write32(dev, offset, value);
 388 }
 389 #ifdef CONFIG_SSB_BLOCKIO
 390 static inline void ssb_block_read(struct ssb_device *dev, void *buffer,
 391                                   size_t count, u16 offset, u8 reg_width)
 392 {
 393         dev->ops->block_read(dev, buffer, count, offset, reg_width);
 394 }
 395
 396 static inline void ssb_block_write(struct ssb_device *dev, const void *buffer,
 397                                    size_t count, u16 offset, u8 reg_width)
 398 {
 399         dev->ops->block_write(dev, buffer, count, offset, reg_width);
 400 }
 401 #endif /* CONFIG_SSB_BLOCKIO */
 402
 403
 404 /* The SSB DMA API. Use this API for any DMA operation on the device.
 405  * This API basically is a wrapper that calls the correct DMA API for
 406  * the host device type the SSB device is attached to. */
 407
 408 /* Translation (routing) bits that need to be ORed to DMA
 409  * addresses before they are given to a device. */
 410 extern u32 ssb_dma_translation(struct ssb_device *dev);
 411 #define SSB_DMA_TRANSLATION_MASK        0xC0000000
 412 #define SSB_DMA_TRANSLATION_SHIFT       30
 413
 414 extern int ssb_dma_set_mask(struct ssb_device *dev, u64 mask);
 415
 416 extern void * ssb_dma_alloc_consistent(struct ssb_device *dev, size_t size,
 417                                        dma_addr_t *dma_handle, gfp_t gfp_flags);
 418 extern void ssb_dma_free_consistent(struct ssb_device *dev, size_t size,
 419                                     void *vaddr, dma_addr_t dma_handle,
 420                                     gfp_t gfp_flags);
 421
 422 static inline void __cold __ssb_dma_not_implemented(struct ssb_device *dev)
 423 {
 424 #ifdef CONFIG_SSB_DEBUG
 425         printk(KERN_ERR "SSB: BUG! Calling DMA API for "
 426                "unsupported bustype %d\n", dev->bus->bustype);
 427 #endif /* DEBUG */
 428 }
 429
 430 static inline int ssb_dma_mapping_error(struct ssb_device *dev, dma_addr_t addr)
 431 {
 432         switch (dev->bus->bustype) {
 433         case SSB_BUSTYPE_PCI:
 434 #ifdef CONFIG_SSB_PCIHOST
 435                 return pci_dma_mapping_error(dev->bus->host_pci, addr);
 436 #endif
 437                 break;
 438         case SSB_BUSTYPE_SSB:
 439                 return dma_mapping_error(dev->dev, addr);
 440         default:
 441                 break;
 442         }
 443         __ssb_dma_not_implemented(dev);
 444         return -ENOSYS;
 445 }
 446
 447 static inline dma_addr_t ssb_dma_map_single(struct ssb_device *dev, void *p,
 448                                             size_t size, enum dma_data_direction dir)
 449 {
 450         switch (dev->bus->bustype) {
 451         case SSB_BUSTYPE_PCI:
 452 #ifdef CONFIG_SSB_PCIHOST
 453                 return pci_map_single(dev->bus->host_pci, p, size, dir);
 454 #endif
 455                 break;
 456         case SSB_BUSTYPE_SSB:
 457                 return dma_map_single(dev->dev, p, size, dir);
 458         default:
 459                 break;
 460         }
 461         __ssb_dma_not_implemented(dev);
 462         return 0;
 463 }
 464
 465 static inline void ssb_dma_unmap_single(struct ssb_device *dev, dma_addr_t dma_addr,
 466                                         size_t size, enum dma_data_direction dir)
 467 {
 468         switch (dev->bus->bustype) {
 469         case SSB_BUSTYPE_PCI:
 470 #ifdef CONFIG_SSB_PCIHOST
 471                 pci_unmap_single(dev->bus->host_pci, dma_addr, size, dir);
 472                 return;
 473 #endif
 474                 break;
 475         case SSB_BUSTYPE_SSB:
 476                 dma_unmap_single(dev->dev, dma_addr, size, dir);
 477                 return;
 478         default:
 479                 break;
 480         }
 481         __ssb_dma_not_implemented(dev);
 482 }
 483
 484 static inline void ssb_dma_sync_single_for_cpu(struct ssb_device *dev,
 485                                                dma_addr_t dma_addr,
 486                                                size_t size,
 487                                                enum dma_data_direction dir)
 488 {
 489         switch (dev->bus->bustype) {
 490         case SSB_BUSTYPE_PCI:
 491 #ifdef CONFIG_SSB_PCIHOST
 492                 pci_dma_sync_single_for_cpu(dev->bus->host_pci, dma_addr,
 493                                             size, dir);
 494                 return;
 495 #endif
 496                 break;
 497         case SSB_BUSTYPE_SSB:
 498                 dma_sync_single_for_cpu(dev->dev, dma_addr, size, dir);
 499                 return;
 500         default:
 501                 break;
 502         }
 503         __ssb_dma_not_implemented(dev);
 504 }
 505
 506 static inline void ssb_dma_sync_single_for_device(struct ssb_device *dev,
 507                                                   dma_addr_t dma_addr,
 508                                                   size_t size,
 509                                                   enum dma_data_direction dir)
 510 {
 511         switch (dev->bus->bustype) {
 512         case SSB_BUSTYPE_PCI:
 513 #ifdef CONFIG_SSB_PCIHOST
 514                 pci_dma_sync_single_for_device(dev->bus->host_pci, dma_addr,
 515                                                size, dir);
 516                 return;
 517 #endif
 518                 break;
 519         case SSB_BUSTYPE_SSB:
 520                 dma_sync_single_for_device(dev->dev, dma_addr, size, dir);
 521                 return;
 522         default:
 523                 break;
 524         }
 525         __ssb_dma_not_implemented(dev);
 526 }
 527
 528 static inline void ssb_dma_sync_single_range_for_cpu(struct ssb_device *dev,
 529                                                      dma_addr_t dma_addr,
 530                                                      unsigned long offset,
 531                                                      size_t size,
 532                                                      enum dma_data_direction dir)
 533 {
 534         switch (dev->bus->bustype) {
 535         case SSB_BUSTYPE_PCI:
 536 #ifdef CONFIG_SSB_PCIHOST
 537                 /* Just sync everything. That's all the PCI API can do. */
 538                 pci_dma_sync_single_for_cpu(dev->bus->host_pci, dma_addr,
 539                                             offset + size, dir);
 540                 return;
 541 #endif
 542                 break;
 543         case SSB_BUSTYPE_SSB:
 544                 dma_sync_single_range_for_cpu(dev->dev, dma_addr, offset,
 545                                               size, dir);
 546                 return;
 547         default:
 548                 break;
 549         }
 550         __ssb_dma_not_implemented(dev);
 551 }
 552
 553 static inline void ssb_dma_sync_single_range_for_device(struct ssb_device *dev,
 554                                                         dma_addr_t dma_addr,
 555                                                         unsigned long offset,
 556                                                         size_t size,
 557                                                         enum dma_data_direction dir)
 558 {
 559         switch (dev->bus->bustype) {
 560         case SSB_BUSTYPE_PCI:
 561 #ifdef CONFIG_SSB_PCIHOST
 562                 /* Just sync everything. That's all the PCI API can do. */
 563                 pci_dma_sync_single_for_device(dev->bus->host_pci, dma_addr,
 564                                                offset + size, dir);
 565                 return;
 566 #endif
 567                 break;
 568         case SSB_BUSTYPE_SSB:
 569                 dma_sync_single_range_for_device(dev->dev, dma_addr, offset,
 570                                                  size, dir);
 571                 return;
 572         default:
 573                 break;
 574         }
 575         __ssb_dma_not_implemented(dev);
 576 }
 577
 578
 579 #ifdef CONFIG_SSB_PCIHOST
 580 /* PCI-host wrapper driver */
 581 extern int ssb_pcihost_register(struct pci_driver *driver);
 582 static inline void ssb_pcihost_unregister(struct pci_driver *driver)
 583 {
 584         pci_unregister_driver(driver);
 585 }
 586
 587 static inline
 588 void ssb_pcihost_set_power_state(struct ssb_device *sdev, pci_power_t state)
 589 {
 590         if (sdev->bus->bustype == SSB_BUSTYPE_PCI)
 591                 pci_set_power_state(sdev->bus->host_pci, state);
 592 }
 593 #else
 594 static inline void ssb_pcihost_unregister(struct pci_driver *driver)
 595 {
 596 }
 597
 598 static inline
 599 void ssb_pcihost_set_power_state(struct ssb_device *sdev, pci_power_t state)
 600 {
 601 }
 602 #endif /* CONFIG_SSB_PCIHOST */
 603
 604
 605 /* If a driver is shutdown or suspended, call this to signal
 606  * that the bus may be completely powered down. SSB will decide,
 607  * if it's really time to power down the bus, based on if there
 608  * are other devices that want to run. */
 609 extern int ssb_bus_may_powerdown(struct ssb_bus *bus);
 610 /* Before initializing and enabling a device, call this to power-up the bus.
 611  * If you want to allow use of dynamic-power-control, pass the flag.
 612  * Otherwise static always-on powercontrol will be used. */
 613 extern int ssb_bus_powerup(struct ssb_bus *bus, bool dynamic_pctl);
 614
 615
 616 /* Various helper functions */
 617 extern u32 ssb_admatch_base(u32 adm);
 618 extern u32 ssb_admatch_size(u32 adm);
 619
 620 /* PCI device mapping and fixup routines.
 621  * Called from the architecture pcibios init code.
 622  * These are only available on SSB_EMBEDDED configurations. */
 623 #ifdef CONFIG_SSB_EMBEDDED
 624 int ssb_pcibios_plat_dev_init(struct pci_dev *dev);
 625 int ssb_pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin);
 626 #endif /* CONFIG_SSB_EMBEDDED */
 627
 628 #endif /* LINUX_SSB_H_ */