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