sys/dev/drm/drmP.h

   1 /* drmP.h -- Private header for Direct Rendering Manager -*- linux-c -*-
   2  * Created: Mon Jan  4 10:05:05 1999 by faith@precisioninsight.com
   3  */
   4 /*-
   5  * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
   6  * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
   7  * All rights reserved.
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a
  10  * copy of this software and associated documentation files (the "Software"),
  11  * to deal in the Software without restriction, including without limitation
  12  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  13  * and/or sell copies of the Software, and to permit persons to whom the
  14  * Software is furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice (including the next
  17  * paragraph) shall be included in all copies or substantial portions of the
  18  * Software.
  19  *
  20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  21  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  23  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  24  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  25  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  26  * OTHER DEALINGS IN THE SOFTWARE.
  27  *
  28  * Authors:
  29  *    Rickard E. (Rik) Faith <faith@valinux.com>
  30  *    Gareth Hughes <gareth@valinux.com>
  31  *
  32  */
  33
  34 #ifndef _DRM_P_H_
  35 #define _DRM_P_H_
  36
  37 #if defined(_KERNEL) || defined(__KERNEL__)
  38
  39 struct drm_device;
  40 struct drm_file;
  41
  42 #include <sys/param.h>
  43 #include <sys/queue.h>
  44 #include <sys/malloc.h>
  45 #include <sys/kernel.h>
  46 #include <sys/module.h>
  47 #include <sys/systm.h>
  48 #include <sys/conf.h>
  49 #include <sys/stat.h>
  50 #include <sys/priv.h>
  51 #include <sys/proc.h>
  52 #include <sys/lock.h>
  53 #include <sys/fcntl.h>
  54 #include <sys/uio.h>
  55 #include <sys/filio.h>
  56 #include <sys/sysctl.h>
  57 #include <sys/bus.h>
  58 #include <sys/signalvar.h>
  59 #include <sys/poll.h>
  60 #include <sys/tree.h>
  61 #include <sys/taskqueue.h>
  62 #include <vm/vm.h>
  63 #include <vm/pmap.h>
  64 #include <vm/vm_extern.h>
  65 #include <vm/vm_map.h>
  66 #include <vm/vm_param.h>
  67 #include <machine/param.h>
  68 #include <machine/pmap.h>
  69 #include <sys/bus.h>
  70 #include <sys/resource.h>
  71 #include <machine/specialreg.h>
  72 #include <machine/sysarch.h>
  73 #include <sys/endian.h>
  74 #include <sys/mman.h>
  75 #include <sys/rman.h>
  76 #include <sys/memrange.h>
  77 #include <dev/agp/agpvar.h>
  78 #include <sys/device.h>
  79 #include <sys/agpio.h>
  80 #include <sys/spinlock.h>
  81 #include <sys/spinlock2.h>
  82 #include <bus/pci/pcivar.h>
  83 #include <bus/pci/pcireg.h>
  84 #include <sys/selinfo.h>
  85 #include <sys/bus.h>
  86
  87 #include "dev/drm/drm.h"
  88 #include "dev/drm/drm_linux_list.h"
  89 #include "dev/drm/drm_atomic.h"
  90 #include "dev/drm/drm_internal.h"
  91
  92 #include <opt_drm.h>
  93 #ifdef DRM_DEBUG
  94 #undef DRM_DEBUG
  95 #define DRM_DEBUG_DEFAULT_ON 1
  96 #endif /* DRM_DEBUG */
  97
  98 #if defined(DRM_LINUX) && DRM_LINUX && !defined(__amd64__) && !defined(__DragonFly__) /* XXX */
  99 #include <sys/file.h>
 100 #include <sys/proc.h>
 101 #include <machine/../linux/linux.h>
 102 #include <machine/../linux/linux_proto.h>
 103 #else
 104 /* Either it was defined when it shouldn't be (FreeBSD amd64) or it isn't
 105  * supported on this OS yet.
 106  */
 107 #undef DRM_LINUX
 108 #define DRM_LINUX 0
 109 #endif
 110
 111 /* driver capabilities and requirements mask */
 112 #define DRIVER_USE_AGP     0x1
 113 #define DRIVER_REQUIRE_AGP 0x2
 114 #define DRIVER_USE_MTRR    0x4
 115 #define DRIVER_PCI_DMA     0x8
 116 #define DRIVER_SG          0x10
 117 #define DRIVER_HAVE_DMA    0x20
 118 #define DRIVER_HAVE_IRQ    0x40
 119 #define DRIVER_DMA_QUEUE   0x100
 120
 121
 122 #define DRM_HASH_SIZE         16 /* Size of key hash table                */
 123 #define DRM_KERNEL_CONTEXT    0  /* Change drm_resctx if changed          */
 124 #define DRM_RESERVED_CONTEXTS 1  /* Change drm_resctx if changed          */
 125
 126 MALLOC_DECLARE(DRM_MEM_DMA);
 127 MALLOC_DECLARE(DRM_MEM_SAREA);
 128 MALLOC_DECLARE(DRM_MEM_DRIVER);
 129 MALLOC_DECLARE(DRM_MEM_MAGIC);
 130 MALLOC_DECLARE(DRM_MEM_IOCTLS);
 131 MALLOC_DECLARE(DRM_MEM_MAPS);
 132 MALLOC_DECLARE(DRM_MEM_BUFS);
 133 MALLOC_DECLARE(DRM_MEM_SEGS);
 134 MALLOC_DECLARE(DRM_MEM_PAGES);
 135 MALLOC_DECLARE(DRM_MEM_FILES);
 136 MALLOC_DECLARE(DRM_MEM_QUEUES);
 137 MALLOC_DECLARE(DRM_MEM_CMDS);
 138 MALLOC_DECLARE(DRM_MEM_MAPPINGS);
 139 MALLOC_DECLARE(DRM_MEM_BUFLISTS);
 140 MALLOC_DECLARE(DRM_MEM_AGPLISTS);
 141 MALLOC_DECLARE(DRM_MEM_CTXBITMAP);
 142 MALLOC_DECLARE(DRM_MEM_SGLISTS);
 143 MALLOC_DECLARE(DRM_MEM_DRAWABLE);
 144
 145 #define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
 146
 147                                 /* Internal types and structures */
 148 #define DRM_ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
 149 #define DRM_MIN(a,b) ((a)<(b)?(a):(b))
 150 #define DRM_MAX(a,b) ((a)>(b)?(a):(b))
 151
 152 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
 153
 154 #define __OS_HAS_AGP    1
 155
 156 #define DRM_DEV_MODE    (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP)
 157 #define DRM_DEV_UID     0
 158 #define DRM_DEV_GID     0
 159
 160 #define wait_queue_head_t       atomic_t
 161 #define DRM_WAKEUP(w)           wakeup((void *)w)
 162 #define DRM_WAKEUP_INT(w)       wakeup(w)
 163 #define DRM_INIT_WAITQUEUE(queue) do {(void)(queue);} while (0)
 164
 165 #define DRM_CURPROC             curthread
 166 #define DRM_STRUCTPROC          struct thread
 167 #define DRM_SPINTYPE            struct lock
 168 #define DRM_SPININIT(l,name)    lockinit(l, name, 0, LK_CANRECURSE)
 169 #define DRM_SPINUNINIT(l)
 170 #define DRM_SPINLOCK(l)         lockmgr(l, LK_EXCLUSIVE|LK_RETRY|LK_CANRECURSE)
 171 #define DRM_SPINUNLOCK(u)       lockmgr(u, LK_RELEASE)
 172 #define DRM_SPINLOCK_IRQSAVE(l, irqflags) do {          \
 173         DRM_SPINLOCK(l);                                \
 174         (void)irqflags;                                 \
 175 } while (0)
 176 #define DRM_SPINUNLOCK_IRQRESTORE(u, irqflags) DRM_SPINUNLOCK(u)
 177 #define DRM_SPINLOCK_ASSERT(l)
 178 #define DRM_CURRENTPID          curthread->td_proc->p_pid
 179 #define DRM_LOCK()              DRM_SPINLOCK(&dev->dev_lock)
 180 #define DRM_UNLOCK()            DRM_SPINUNLOCK(&dev->dev_lock)
 181 #define DRM_SYSCTL_HANDLER_ARGS (SYSCTL_HANDLER_ARGS)
 182
 183 #define DRM_IRQ_ARGS            void *arg
 184 typedef void                    irqreturn_t;
 185 #define IRQ_HANDLED             /* nothing */
 186 #define IRQ_NONE                /* nothing */
 187
 188 enum {
 189         DRM_IS_NOT_AGP,
 190         DRM_IS_AGP,
 191         DRM_MIGHT_BE_AGP
 192 };
 193 #define DRM_AGP_MEM             struct agp_memory_info
 194
 195 #define drm_get_device_from_kdev(_kdev) (_kdev->si_drv1)
 196
 197 #define PAGE_ALIGN(addr) round_page(addr)
 198 /* DRM_SUSER returns true if the user is superuser */
 199 #define DRM_SUSER(p)            (priv_check(p, PRIV_DRIVER) == 0)
 200 #define DRM_AGP_FIND_DEVICE()   agp_find_device()
 201 #define DRM_MTRR_WC             MDF_WRITECOMBINE
 202 #define jiffies                 ticks
 203
 204 typedef unsigned long dma_addr_t;
 205 typedef u_int64_t u64;
 206 typedef u_int32_t u32;
 207 typedef u_int16_t u16;
 208 typedef u_int8_t u8;
 209
 210 /* DRM_READMEMORYBARRIER() prevents reordering of reads.
 211  * DRM_WRITEMEMORYBARRIER() prevents reordering of writes.
 212  * DRM_MEMORYBARRIER() prevents reordering of reads and writes.
 213  */
 214 #if defined(__i386__)
 215 #define DRM_READMEMORYBARRIER()         __asm __volatile( \
 216                                         "lock; addl $0,0(%%esp)" : : : "memory");
 217 #define DRM_WRITEMEMORYBARRIER()        __asm __volatile("" : : : "memory");
 218 #define DRM_MEMORYBARRIER()             __asm __volatile( \
 219                                         "lock; addl $0,0(%%esp)" : : : "memory");
 220 #elif defined(__alpha__)
 221 #define DRM_READMEMORYBARRIER()         alpha_mb();
 222 #define DRM_WRITEMEMORYBARRIER()        alpha_wmb();
 223 #define DRM_MEMORYBARRIER()             alpha_mb();
 224 #elif defined(__amd64__)
 225 #define DRM_READMEMORYBARRIER()         __asm __volatile( \
 226                                         "lock; addl $0,0(%%rsp)" : : : "memory");
 227 #define DRM_WRITEMEMORYBARRIER()        __asm __volatile("" : : : "memory");
 228 #define DRM_MEMORYBARRIER()             __asm __volatile( \
 229                                         "lock; addl $0,0(%%rsp)" : : : "memory");
 230 #endif
 231
 232 #define DRM_READ8(map, offset)                                          \
 233         *(volatile u_int8_t *)(((vm_offset_t)(map)->handle) +           \
 234             (vm_offset_t)(offset))
 235 #define DRM_READ16(map, offset)                                         \
 236         *(volatile u_int16_t *)(((vm_offset_t)(map)->handle) +          \
 237             (vm_offset_t)(offset))
 238 #define DRM_READ32(map, offset)                                         \
 239         *(volatile u_int32_t *)(((vm_offset_t)(map)->handle) +          \
 240             (vm_offset_t)(offset))
 241 #define DRM_WRITE8(map, offset, val)                                    \
 242         *(volatile u_int8_t *)(((vm_offset_t)(map)->handle) +           \
 243             (vm_offset_t)(offset)) = val
 244 #define DRM_WRITE16(map, offset, val)                                   \
 245         *(volatile u_int16_t *)(((vm_offset_t)(map)->handle) +          \
 246             (vm_offset_t)(offset)) = val
 247 #define DRM_WRITE32(map, offset, val)                                   \
 248         *(volatile u_int32_t *)(((vm_offset_t)(map)->handle) +          \
 249             (vm_offset_t)(offset)) = val
 250
 251 #define DRM_VERIFYAREA_READ( uaddr, size )              \
 252         (!useracc(__DECONST(caddr_t, uaddr), size, VM_PROT_READ))
 253
 254 #define DRM_COPY_TO_USER(user, kern, size) \
 255         copyout(kern, user, size)
 256 #define DRM_COPY_FROM_USER(kern, user, size) \
 257         copyin(user, kern, size)
 258 #define DRM_COPY_FROM_USER_UNCHECKED(arg1, arg2, arg3)  \
 259         copyin(arg2, arg1, arg3)
 260 #define DRM_COPY_TO_USER_UNCHECKED(arg1, arg2, arg3)    \
 261         copyout(arg2, arg1, arg3)
 262 #define DRM_GET_USER_UNCHECKED(val, uaddr)              \
 263         ((val) = fuword32(uaddr), 0)
 264
 265 #define cpu_to_le32(x) htole32(x)
 266 #define le32_to_cpu(x) le32toh(x)
 267
 268 #define DRM_HZ                  hz
 269 #define DRM_UDELAY(udelay)      DELAY(udelay)
 270 #define DRM_TIME_SLICE          (hz/20)  /* Time slice for GLXContexts    */
 271
 272 #define DRM_GET_PRIV_SAREA(_dev, _ctx, _map) do {       \
 273         (_map) = (_dev)->context_sareas[_ctx];          \
 274 } while(0)
 275
 276 #define LOCK_TEST_WITH_RETURN(dev, file_priv)                           \
 277 do {                                                                    \
 278         if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) ||              \
 279              dev->lock.file_priv != file_priv) {                        \
 280                 DRM_ERROR("%s called without lock held\n",              \
 281                            __FUNCTION__);                               \
 282                 return EINVAL;                                          \
 283         }                                                               \
 284 } while (0)
 285
 286 /* Returns -errno to shared code */
 287 #define DRM_WAIT_ON( ret, queue, timeout, condition )           \
 288 for ( ret = 0 ; !ret && !(condition) ; ) {                      \
 289         DRM_UNLOCK();                                           \
 290         lwkt_serialize_enter(&dev->irq_lock);                   \
 291         if (!(condition)) {                                     \
 292             crit_enter();                                       \
 293             tsleep_interlock(&(queue));                         \
 294             lwkt_serialize_exit(&dev->irq_lock);                \
 295             ret = -tsleep(&(queue), PCATCH,                     \
 296                           "drmwtq", (timeout));                 \
 297             crit_exit();                                        \
 298         } else {                                                \
 299                 lwkt_serialize_exit(&dev->irq_lock);            \
 300         }                                                       \
 301         DRM_LOCK();                                             \
 302 }
 303
 304 #define printf  kprintf
 305 #define snprintf ksnprintf
 306 #define sscanf  ksscanf
 307 #define malloc  kmalloc
 308 #define realloc krealloc
 309 #define reallocf krealloc       /* XXX XXX XXX */
 310
 311 __inline static void
 312 free(void *addr, struct malloc_type *type)
 313 {
 314         if (addr != NULL)
 315                 kfree(addr, type);
 316 }
 317
 318 #define DRM_ERROR(fmt, ...) \
 319         printf("error: [" DRM_NAME ":pid%d:%s] *ERROR* " fmt,           \
 320             DRM_CURRENTPID, __func__ , ##__VA_ARGS__)
 321
 322 #define DRM_INFO(fmt, ...)  printf("info: [" DRM_NAME "] " fmt , ##__VA_ARGS__)
 323
 324 #define DRM_DEBUG(fmt, ...) do {                                        \
 325         if (drm_debug_flag)                                             \
 326                 printf("[" DRM_NAME ":pid%d:%s] " fmt, DRM_CURRENTPID,  \
 327                         __func__ , ##__VA_ARGS__);                      \
 328 } while (0)
 329
 330 typedef struct drm_pci_id_list
 331 {
 332         int vendor;
 333         int device;
 334         long driver_private;
 335         char *name;
 336 } drm_pci_id_list_t;
 337
 338 struct drm_msi_blacklist_entry
 339 {
 340         int vendor;
 341         int device;
 342 };
 343
 344 #define DRM_AUTH        0x1
 345 #define DRM_MASTER      0x2
 346 #define DRM_ROOT_ONLY   0x4
 347 typedef struct drm_ioctl_desc {
 348         unsigned long cmd;
 349         int (*func)(struct drm_device *dev, void *data,
 350                     struct drm_file *file_priv);
 351         int flags;
 352 } drm_ioctl_desc_t;
 353 /**
 354  * Creates a driver or general drm_ioctl_desc array entry for the given
 355  * ioctl, for use by drm_ioctl().
 356  */
 357 #define DRM_IOCTL_DEF(ioctl, func, flags) \
 358         [DRM_IOCTL_NR(ioctl)] = {ioctl, func, flags}
 359
 360 typedef struct drm_magic_entry {
 361         drm_magic_t            magic;
 362         struct drm_file        *priv;
 363         struct drm_magic_entry *next;
 364 } drm_magic_entry_t;
 365
 366 typedef struct drm_magic_head {
 367         struct drm_magic_entry *head;
 368         struct drm_magic_entry *tail;
 369 } drm_magic_head_t;
 370
 371 typedef struct drm_buf {
 372         int               idx;         /* Index into master buflist          */
 373         int               total;       /* Buffer size                        */
 374         int               order;       /* log-base-2(total)                  */
 375         int               used;        /* Amount of buffer in use (for DMA)  */
 376         unsigned long     offset;      /* Byte offset (used internally)      */
 377         void              *address;    /* Address of buffer                  */
 378         unsigned long     bus_address; /* Bus address of buffer              */
 379         struct drm_buf    *next;       /* Kernel-only: used for free list    */
 380         __volatile__ int  pending;     /* On hardware DMA queue              */
 381         struct drm_file   *file_priv;  /* Unique identifier of holding process */
 382         int               context;     /* Kernel queue for this buffer       */
 383         enum {
 384                 DRM_LIST_NONE    = 0,
 385                 DRM_LIST_FREE    = 1,
 386                 DRM_LIST_WAIT    = 2,
 387                 DRM_LIST_PEND    = 3,
 388                 DRM_LIST_PRIO    = 4,
 389                 DRM_LIST_RECLAIM = 5
 390         }                 list;        /* Which list we're on                */
 391
 392         int               dev_priv_size; /* Size of buffer private stoarge   */
 393         void              *dev_private;  /* Per-buffer private storage       */
 394 } drm_buf_t;
 395
 396 typedef struct drm_freelist {
 397         int               initialized; /* Freelist in use                  */
 398         atomic_t          count;       /* Number of free buffers           */
 399         drm_buf_t         *next;       /* End pointer                      */
 400
 401         int               low_mark;    /* Low water mark                   */
 402         int               high_mark;   /* High water mark                  */
 403 } drm_freelist_t;
 404
 405 typedef struct drm_dma_handle {
 406         void *vaddr;
 407         bus_addr_t busaddr;
 408         bus_dma_tag_t tag;
 409         bus_dmamap_t map;
 410 } drm_dma_handle_t;
 411
 412 typedef struct drm_buf_entry {
 413         int               buf_size;
 414         int               buf_count;
 415         drm_buf_t         *buflist;
 416         int               seg_count;
 417         drm_dma_handle_t  **seglist;
 418         int               page_order;
 419
 420         drm_freelist_t    freelist;
 421 } drm_buf_entry_t;
 422
 423 typedef TAILQ_HEAD(drm_file_list, drm_file) drm_file_list_t;
 424 struct drm_file {
 425         TAILQ_ENTRY(drm_file) link;
 426         struct drm_device *dev;
 427         int               authenticated;
 428         int               master;
 429         int               minor;
 430         pid_t             pid;
 431         uid_t             uid;
 432         int               refs;
 433         drm_magic_t       magic;
 434         unsigned long     ioctl_count;
 435         void             *driver_priv;
 436 };
 437
 438 typedef struct drm_lock_data {
 439         struct drm_hw_lock      *hw_lock;       /* Hardware lock                   */
 440         struct drm_file   *file_priv;   /* Unique identifier of holding process (NULL is kernel)*/
 441         int               lock_queue;   /* Queue of blocked processes      */
 442         unsigned long     lock_time;    /* Time of last lock in jiffies    */
 443 } drm_lock_data_t;
 444
 445 /* This structure, in the struct drm_device, is always initialized while the
 446  * device
 447  * is open.  dev->dma_lock protects the incrementing of dev->buf_use, which
 448  * when set marks that no further bufs may be allocated until device teardown
 449  * occurs (when the last open of the device has closed).  The high/low
 450  * watermarks of bufs are only touched by the X Server, and thus not
 451  * concurrently accessed, so no locking is needed.
 452  */
 453 typedef struct drm_device_dma {
 454         drm_buf_entry_t   bufs[DRM_MAX_ORDER+1];
 455         int               buf_count;
 456         drm_buf_t         **buflist;    /* Vector of pointers info bufs    */
 457         int               seg_count;
 458         int               page_count;
 459         unsigned long     *pagelist;
 460         unsigned long     byte_count;
 461         enum {
 462                 _DRM_DMA_USE_AGP = 0x01,
 463                 _DRM_DMA_USE_SG  = 0x02
 464         } flags;
 465 } drm_device_dma_t;
 466
 467 typedef struct drm_agp_mem {
 468         void               *handle;
 469         unsigned long      bound; /* address */
 470         int                pages;
 471         struct drm_agp_mem *prev;
 472         struct drm_agp_mem *next;
 473 } drm_agp_mem_t;
 474
 475 typedef struct drm_agp_head {
 476         device_t           agpdev;
 477         struct agp_info    info;
 478         const char         *chipset;
 479         drm_agp_mem_t      *memory;
 480         unsigned long      mode;
 481         int                enabled;
 482         int                acquired;
 483         unsigned long      base;
 484         int                mtrr;
 485         int                cant_use_aperture;
 486         unsigned long      page_mask;
 487 } drm_agp_head_t;
 488
 489 typedef struct drm_sg_mem {
 490         unsigned long             handle;
 491         void                     *virtual;
 492         int                       pages;
 493         dma_addr_t               *busaddr;
 494         struct drm_dma_handle    *dmah;         /* Handle to PCI memory  */
 495 } drm_sg_mem_t;
 496
 497 typedef TAILQ_HEAD(drm_map_list, drm_local_map) drm_map_list_t;
 498
 499 typedef struct drm_local_map {
 500         unsigned long   offset;  /* Physical address (0 for SAREA)*/
 501         unsigned long   size;    /* Physical size (bytes)           */
 502         enum drm_map_type       type;    /* Type of memory mapped                   */
 503         enum drm_map_flags      flags;   /* Flags                                   */
 504         void            *handle; /* User-space: "Handle" to pass to mmap    */
 505                                  /* Kernel-space: kernel-virtual address    */
 506         int             mtrr;    /* Boolean: MTRR used */
 507                                  /* Private data                            */
 508         int             rid;     /* PCI resource ID for bus_space */
 509         struct resource *bsr;
 510         bus_space_tag_t bst;
 511         bus_space_handle_t bsh;
 512         drm_dma_handle_t *dmah;
 513         TAILQ_ENTRY(drm_local_map) link;
 514 } drm_local_map_t;
 515
 516 TAILQ_HEAD(drm_vbl_sig_list, drm_vbl_sig);
 517 typedef struct drm_vbl_sig {
 518         TAILQ_ENTRY(drm_vbl_sig) link;
 519         unsigned int    sequence;
 520         int             signo;
 521         int             pid;
 522 } drm_vbl_sig_t;
 523
 524 struct drm_vblank_info {
 525         wait_queue_head_t queue;        /* vblank wait queue */
 526         atomic_t count;                 /* number of VBLANK interrupts */
 527                                         /* (driver must alloc the right number of counters) */
 528         struct drm_vbl_sig_list sigs;   /* signal list to send on VBLANK */
 529         atomic_t refcount;              /* number of users of vblank interrupts */
 530         u32 last;                       /* protected by dev->vbl_lock, used */
 531                                         /* for wraparound handling */
 532         int enabled;                    /* so we don't call enable more than */
 533                                         /* once per disable */
 534         int inmodeset;                  /* Display driver is setting mode */
 535 };
 536
 537 /* location of GART table */
 538 #define DRM_ATI_GART_MAIN 1
 539 #define DRM_ATI_GART_FB   2
 540
 541 #define DRM_ATI_GART_PCI  1
 542 #define DRM_ATI_GART_PCIE 2
 543 #define DRM_ATI_GART_IGP  3
 544
 545 struct drm_ati_pcigart_info {
 546         int gart_table_location;
 547         int gart_reg_if;
 548         void *addr;
 549         dma_addr_t bus_addr;
 550         dma_addr_t table_mask;
 551         dma_addr_t member_mask;
 552         struct drm_dma_handle *table_handle;
 553         drm_local_map_t mapping;
 554         int table_size;
 555         struct drm_dma_handle *dmah; /* handle for ATI PCIGART table */
 556 };
 557
 558 #ifndef DMA_BIT_MASK
 559 #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : (1ULL<<(n)) - 1)
 560 #endif
 561
 562 #define upper_32_bits(n) ((u32)(((n) >> 16) >> 16))
 563
 564 struct drm_driver_info {
 565         int     (*load)(struct drm_device *, unsigned long flags);
 566         int     (*firstopen)(struct drm_device *);
 567         int     (*open)(struct drm_device *, struct drm_file *);
 568         void    (*preclose)(struct drm_device *, struct drm_file *file_priv);
 569         void    (*postclose)(struct drm_device *, struct drm_file *);
 570         void    (*lastclose)(struct drm_device *);
 571         int     (*unload)(struct drm_device *);
 572         void    (*reclaim_buffers_locked)(struct drm_device *,
 573                                           struct drm_file *file_priv);
 574         int     (*dma_ioctl)(struct drm_device *dev, void *data,
 575                              struct drm_file *file_priv);
 576         void    (*dma_ready)(struct drm_device *);
 577         int     (*dma_quiescent)(struct drm_device *);
 578         int     (*dma_flush_block_and_flush)(struct drm_device *, int context,
 579                                              enum drm_lock_flags flags);
 580         int     (*dma_flush_unblock)(struct drm_device *, int context,
 581                                      enum drm_lock_flags flags);
 582         int     (*context_ctor)(struct drm_device *dev, int context);
 583         int     (*context_dtor)(struct drm_device *dev, int context);
 584         int     (*kernel_context_switch)(struct drm_device *dev, int old,
 585                                          int new);
 586         int     (*kernel_context_switch_unlock)(struct drm_device *dev);
 587         void    (*irq_preinstall)(struct drm_device *dev);
 588         int     (*irq_postinstall)(struct drm_device *dev);
 589         void    (*irq_uninstall)(struct drm_device *dev);
 590         void    (*irq_handler)(DRM_IRQ_ARGS);
 591         u32     (*get_vblank_counter)(struct drm_device *dev, int crtc);
 592         int     (*enable_vblank)(struct drm_device *dev, int crtc);
 593         void    (*disable_vblank)(struct drm_device *dev, int crtc);
 594
 595         drm_pci_id_list_t *id_entry;    /* PCI ID, name, and chipset private */
 596
 597         /**
 598          * Called by \c drm_device_is_agp.  Typically used to determine if a
 599          * card is really attached to AGP or not.
 600          *
 601          * \param dev  DRM device handle
 602          *
 603          * \returns
 604          * One of three values is returned depending on whether or not the
 605          * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
 606          * (return of 1), or may or may not be AGP (return of 2).
 607          */
 608         int     (*device_is_agp) (struct drm_device * dev);
 609
 610         drm_ioctl_desc_t *ioctls;
 611         int     max_ioctl;
 612
 613         int     buf_priv_size;
 614
 615         int     major;
 616         int     minor;
 617         int     patchlevel;
 618         const char *name;               /* Simple driver name              */
 619         const char *desc;               /* Longer driver name              */
 620         const char *date;               /* Date of last major changes.     */
 621
 622         u32 driver_features;
 623 };
 624
 625 /* Length for the array of resource pointers for drm_get_resource_*. */
 626 #define DRM_MAX_PCI_RESOURCE    6
 627
 628 /**
 629  * DRM device functions structure
 630  */
 631 struct drm_device {
 632         struct drm_driver_info *driver;
 633         drm_pci_id_list_t *id_entry;    /* PCI ID, name, and chipset private */
 634
 635         u_int16_t pci_device;           /* PCI device id */
 636         u_int16_t pci_vendor;           /* PCI vendor id */
 637
 638         char              *unique;      /* Unique identifier: e.g., busid  */
 639         int               unique_len;   /* Length of unique field          */
 640         device_t          device;       /* Device instance from newbus     */
 641         struct cdev       *devnode;     /* Device number for mknod         */
 642         int               if_version;   /* Highest interface version set */
 643
 644         int               flags;        /* Flags to open(2)                */
 645
 646                                 /* Locks */
 647         DRM_SPINTYPE      vbl_lock;     /* protects vblank operations */
 648         DRM_SPINTYPE      dma_lock;     /* protects dev->dma */
 649         struct lwkt_serialize irq_lock; /* protects irq condition checks */
 650         DRM_SPINTYPE      dev_lock;     /* protects everything else */
 651         DRM_SPINTYPE      drw_lock;
 652
 653                                 /* Usage Counters */
 654         int               open_count;   /* Outstanding files open          */
 655         int               buf_use;      /* Buffers in use -- cannot alloc  */
 656
 657                                 /* Performance counters */
 658         unsigned long     counters;
 659         enum drm_stat_type      types[15];
 660         atomic_t          counts[15];
 661
 662                                 /* Authentication */
 663         drm_file_list_t   files;
 664         drm_magic_head_t  magiclist[DRM_HASH_SIZE];
 665
 666         /* Linked list of mappable regions. Protected by dev_lock */
 667         drm_map_list_t    maplist;
 668
 669         drm_local_map_t   **context_sareas;
 670         int               max_context;
 671
 672         drm_lock_data_t   lock;         /* Information on hardware lock    */
 673
 674                                 /* DMA queues (contexts) */
 675         drm_device_dma_t  *dma;         /* Optional pointer for DMA support */
 676
 677                                 /* Context support */
 678         int               irq;          /* Interrupt used by board         */
 679         int               irq_enabled;  /* True if the irq handler is enabled */
 680         int               msi_enabled;  /* MSI enabled */
 681         int               irqrid;       /* Interrupt used by board */
 682         struct resource   *irqr;        /* Resource for interrupt used by board    */
 683         void              *irqh;        /* Handle from bus_setup_intr      */
 684
 685         /* Storage of resource pointers for drm_get_resource_* */
 686         struct resource   *pcir[DRM_MAX_PCI_RESOURCE];
 687         int               pcirid[DRM_MAX_PCI_RESOURCE];
 688
 689         int               pci_domain;
 690         int               pci_bus;
 691         int               pci_slot;
 692         int               pci_func;
 693
 694         atomic_t          context_flag; /* Context swapping flag           */
 695         int               last_context; /* Last current context            */
 696
 697         int               vblank_disable_allowed;
 698         atomic_t          vbl_signal_pending;   /* number of signals pending on all crtcs */
 699         struct callout    vblank_disable_timer;
 700         u32               max_vblank_count;     /* size of vblank counter register */
 701         struct drm_vblank_info *vblank;         /* per crtc vblank info */
 702         int               num_crtcs;
 703
 704         struct sigio      *buf_sigio;   /* Processes waiting for SIGIO     */
 705
 706                                 /* Sysctl support */
 707         struct drm_sysctl_info *sysctl;
 708
 709         drm_agp_head_t    *agp;
 710         drm_sg_mem_t      *sg;  /* Scatter gather memory */
 711         atomic_t          *ctx_bitmap;
 712         void              *dev_private;
 713         unsigned int      agp_buffer_token;
 714         drm_local_map_t   *agp_buffer_map;
 715
 716         /* RB tree of drawable infos */
 717         RB_HEAD(drawable_tree, bsd_drm_drawable_info) drw_head;
 718 };
 719
 720 static __inline__ int drm_core_check_feature(struct drm_device *dev,
 721                                              int feature)
 722 {
 723         return ((dev->driver->driver_features & feature) ? 1 : 0);
 724 }
 725
 726 #if __OS_HAS_AGP
 727 static inline int drm_core_has_AGP(struct drm_device *dev)
 728 {
 729         return drm_core_check_feature(dev, DRIVER_USE_AGP);
 730 }
 731 #else
 732 #define drm_core_has_AGP(dev) (0)
 733 #endif
 734
 735 extern int      drm_debug_flag;
 736
 737 /* Device setup support (drm_drv.c) */
 738 int     drm_probe(device_t kdev, drm_pci_id_list_t *idlist);
 739 int     drm_attach(device_t kdev, drm_pci_id_list_t *idlist);
 740 void    drm_close(void *data);
 741 int     drm_detach(device_t kdev);
 742 d_ioctl_t drm_ioctl;
 743 d_open_t drm_open;
 744 d_read_t drm_read;
 745 d_poll_t drm_poll;
 746 d_mmap_t drm_mmap;
 747 extern drm_local_map_t  *drm_getsarea(struct drm_device *dev);
 748
 749 /* File operations helpers (drm_fops.c) */
 750 extern int              drm_open_helper(struct cdev *kdev, int flags, int fmt,
 751                                          DRM_STRUCTPROC *p,
 752                                         struct drm_device *dev);
 753 extern struct drm_file  *drm_find_file_by_proc(struct drm_device *dev,
 754                                         DRM_STRUCTPROC *p);
 755
 756 /* Memory management support (drm_memory.c) */
 757 void    drm_mem_init(void);
 758 void    drm_mem_uninit(void);
 759 void    *drm_ioremap_wc(struct drm_device *dev, drm_local_map_t *map);
 760 void    *drm_ioremap(struct drm_device *dev, drm_local_map_t *map);
 761 void    drm_ioremapfree(drm_local_map_t *map);
 762 int     drm_mtrr_add(unsigned long offset, size_t size, int flags);
 763 int     drm_mtrr_del(int handle, unsigned long offset, size_t size, int flags);
 764
 765 int     drm_context_switch(struct drm_device *dev, int old, int new);
 766 int     drm_context_switch_complete(struct drm_device *dev, int new);
 767
 768 int     drm_ctxbitmap_init(struct drm_device *dev);
 769 void    drm_ctxbitmap_cleanup(struct drm_device *dev);
 770 void    drm_ctxbitmap_free(struct drm_device *dev, int ctx_handle);
 771 int     drm_ctxbitmap_next(struct drm_device *dev);
 772
 773 /* Locking IOCTL support (drm_lock.c) */
 774 int     drm_lock_take(struct drm_lock_data *lock_data,
 775                       unsigned int context);
 776 int     drm_lock_transfer(struct drm_lock_data *lock_data,
 777                           unsigned int context);
 778 int     drm_lock_free(struct drm_lock_data *lock_data,
 779                       unsigned int context);
 780
 781 /* Buffer management support (drm_bufs.c) */
 782 unsigned long drm_get_resource_start(struct drm_device *dev,
 783                                      unsigned int resource);
 784 unsigned long drm_get_resource_len(struct drm_device *dev,
 785                                    unsigned int resource);
 786 void    drm_rmmap(struct drm_device *dev, drm_local_map_t *map);
 787 int     drm_order(unsigned long size);
 788 int     drm_addmap(struct drm_device *dev, unsigned long offset,
 789                    unsigned long size,
 790                    enum drm_map_type type, enum drm_map_flags flags,
 791                    drm_local_map_t **map_ptr);
 792 int     drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc *request);
 793 int     drm_addbufs_sg(struct drm_device *dev, struct drm_buf_desc *request);
 794 int     drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc *request);
 795
 796 /* DMA support (drm_dma.c) */
 797 int     drm_dma_setup(struct drm_device *dev);
 798 void    drm_dma_takedown(struct drm_device *dev);
 799 void    drm_free_buffer(struct drm_device *dev, drm_buf_t *buf);
 800 void    drm_reclaim_buffers(struct drm_device *dev, struct drm_file *file_priv);
 801 #define drm_core_reclaim_buffers drm_reclaim_buffers
 802
 803 /* IRQ support (drm_irq.c) */
 804 int     drm_irq_install(struct drm_device *dev);
 805 int     drm_irq_uninstall(struct drm_device *dev);
 806 irqreturn_t drm_irq_handler(DRM_IRQ_ARGS);
 807 void    drm_driver_irq_preinstall(struct drm_device *dev);
 808 void    drm_driver_irq_postinstall(struct drm_device *dev);
 809 void    drm_driver_irq_uninstall(struct drm_device *dev);
 810 void    drm_handle_vblank(struct drm_device *dev, int crtc);
 811 u32     drm_vblank_count(struct drm_device *dev, int crtc);
 812 int     drm_vblank_get(struct drm_device *dev, int crtc);
 813 void    drm_vblank_put(struct drm_device *dev, int crtc);
 814 void    drm_vblank_cleanup(struct drm_device *dev);
 815 int     drm_vblank_wait(struct drm_device *dev, unsigned int *vbl_seq);
 816 int     drm_vblank_init(struct drm_device *dev, int num_crtcs);
 817 void    drm_vbl_send_signals(struct drm_device *dev, int crtc);
 818 int     drm_modeset_ctl(struct drm_device *dev, void *data,
 819                         struct drm_file *file_priv);
 820
 821 /* AGP/PCI Express/GART support (drm_agpsupport.c) */
 822 int     drm_device_is_agp(struct drm_device *dev);
 823 int     drm_device_is_pcie(struct drm_device *dev);
 824 drm_agp_head_t *drm_agp_init(void);
 825 int     drm_agp_acquire(struct drm_device *dev);
 826 int     drm_agp_release(struct drm_device *dev);
 827 int     drm_agp_info(struct drm_device * dev, struct drm_agp_info *info);
 828 int     drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode);
 829 void    *drm_agp_allocate_memory(size_t pages, u32 type);
 830 int     drm_agp_free_memory(void *handle);
 831 int     drm_agp_bind_memory(void *handle, off_t start);
 832 int     drm_agp_unbind_memory(void *handle);
 833 int     drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request);
 834 int     drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request);
 835 int     drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request);
 836 int     drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request);
 837
 838 /* Scatter Gather Support (drm_scatter.c) */
 839 void    drm_sg_cleanup(drm_sg_mem_t *entry);
 840 int     drm_sg_alloc(struct drm_device *dev, struct drm_scatter_gather * request);
 841
 842 /* sysctl support (drm_sysctl.h) */
 843 extern int              drm_sysctl_init(struct drm_device *dev);
 844 extern int              drm_sysctl_cleanup(struct drm_device *dev);
 845
 846 /* ATI PCIGART support (ati_pcigart.c) */
 847 int     drm_ati_pcigart_init(struct drm_device *dev,
 848                                 struct drm_ati_pcigart_info *gart_info);
 849 int     drm_ati_pcigart_cleanup(struct drm_device *dev,
 850                                 struct drm_ati_pcigart_info *gart_info);
 851
 852 /* Locking IOCTL support (drm_drv.c) */
 853 int     drm_lock(struct drm_device *dev, void *data,
 854                  struct drm_file *file_priv);
 855 int     drm_unlock(struct drm_device *dev, void *data,
 856                    struct drm_file *file_priv);
 857 int     drm_version(struct drm_device *dev, void *data,
 858                     struct drm_file *file_priv);
 859 int     drm_setversion(struct drm_device *dev, void *data,
 860                        struct drm_file *file_priv);
 861
 862 /* Misc. IOCTL support (drm_ioctl.c) */
 863 int     drm_irq_by_busid(struct drm_device *dev, void *data,
 864                          struct drm_file *file_priv);
 865 int     drm_getunique(struct drm_device *dev, void *data,
 866                       struct drm_file *file_priv);
 867 int     drm_setunique(struct drm_device *dev, void *data,
 868                       struct drm_file *file_priv);
 869 int     drm_getmap(struct drm_device *dev, void *data,
 870                    struct drm_file *file_priv);
 871 int     drm_getclient(struct drm_device *dev, void *data,
 872                       struct drm_file *file_priv);
 873 int     drm_getstats(struct drm_device *dev, void *data,
 874                      struct drm_file *file_priv);
 875 int     drm_noop(struct drm_device *dev, void *data,
 876                  struct drm_file *file_priv);
 877
 878 /* Context IOCTL support (drm_context.c) */
 879 int     drm_resctx(struct drm_device *dev, void *data,
 880                    struct drm_file *file_priv);
 881 int     drm_addctx(struct drm_device *dev, void *data,
 882                    struct drm_file *file_priv);
 883 int     drm_modctx(struct drm_device *dev, void *data,
 884                    struct drm_file *file_priv);
 885 int     drm_getctx(struct drm_device *dev, void *data,
 886                    struct drm_file *file_priv);
 887 int     drm_switchctx(struct drm_device *dev, void *data,
 888                       struct drm_file *file_priv);
 889 int     drm_newctx(struct drm_device *dev, void *data,
 890                    struct drm_file *file_priv);
 891 int     drm_rmctx(struct drm_device *dev, void *data,
 892                   struct drm_file *file_priv);
 893 int     drm_setsareactx(struct drm_device *dev, void *data,
 894                         struct drm_file *file_priv);
 895 int     drm_getsareactx(struct drm_device *dev, void *data,
 896                         struct drm_file *file_priv);
 897
 898 /* Drawable IOCTL support (drm_drawable.c) */
 899 int     drm_adddraw(struct drm_device *dev, void *data,
 900                     struct drm_file *file_priv);
 901 int     drm_rmdraw(struct drm_device *dev, void *data,
 902                    struct drm_file *file_priv);
 903 int     drm_update_draw(struct drm_device *dev, void *data,
 904                         struct drm_file *file_priv);
 905 struct drm_drawable_info *drm_get_drawable_info(struct drm_device *dev,
 906                                                 int handle);
 907
 908 /* Drawable support (drm_drawable.c) */
 909 void drm_drawable_free_all(struct drm_device *dev);
 910
 911 /* Authentication IOCTL support (drm_auth.c) */
 912 int     drm_getmagic(struct drm_device *dev, void *data,
 913                      struct drm_file *file_priv);
 914 int     drm_authmagic(struct drm_device *dev, void *data,
 915                       struct drm_file *file_priv);
 916
 917 /* Buffer management support (drm_bufs.c) */
 918 int     drm_addmap_ioctl(struct drm_device *dev, void *data,
 919                          struct drm_file *file_priv);
 920 int     drm_rmmap_ioctl(struct drm_device *dev, void *data,
 921                         struct drm_file *file_priv);
 922 int     drm_addbufs(struct drm_device *dev, void *data,
 923                     struct drm_file *file_priv);
 924 int     drm_infobufs(struct drm_device *dev, void *data,
 925                      struct drm_file *file_priv);
 926 int     drm_markbufs(struct drm_device *dev, void *data,
 927                      struct drm_file *file_priv);
 928 int     drm_freebufs(struct drm_device *dev, void *data,
 929                      struct drm_file *file_priv);
 930 int     drm_mapbufs(struct drm_device *dev, void *data,
 931                     struct drm_file *file_priv);
 932
 933 /* DMA support (drm_dma.c) */
 934 int     drm_dma(struct drm_device *dev, void *data, struct drm_file *file_priv);
 935
 936 /* IRQ support (drm_irq.c) */
 937 int     drm_control(struct drm_device *dev, void *data,
 938                     struct drm_file *file_priv);
 939 int     drm_wait_vblank(struct drm_device *dev, void *data,
 940                         struct drm_file *file_priv);
 941
 942 /* AGP/GART support (drm_agpsupport.c) */
 943 int     drm_agp_acquire_ioctl(struct drm_device *dev, void *data,
 944                               struct drm_file *file_priv);
 945 int     drm_agp_release_ioctl(struct drm_device *dev, void *data,
 946                               struct drm_file *file_priv);
 947 int     drm_agp_enable_ioctl(struct drm_device *dev, void *data,
 948                              struct drm_file *file_priv);
 949 int     drm_agp_info_ioctl(struct drm_device *dev, void *data,
 950                            struct drm_file *file_priv);
 951 int     drm_agp_alloc_ioctl(struct drm_device *dev, void *data,
 952                             struct drm_file *file_priv);
 953 int     drm_agp_free_ioctl(struct drm_device *dev, void *data,
 954                            struct drm_file *file_priv);
 955 int     drm_agp_unbind_ioctl(struct drm_device *dev, void *data,
 956                              struct drm_file *file_priv);
 957 int     drm_agp_bind_ioctl(struct drm_device *dev, void *data,
 958                            struct drm_file *file_priv);
 959
 960 /* Scatter Gather Support (drm_scatter.c) */
 961 int     drm_sg_alloc_ioctl(struct drm_device *dev, void *data,
 962                            struct drm_file *file_priv);
 963 int     drm_sg_free(struct drm_device *dev, void *data,
 964                     struct drm_file *file_priv);
 965
 966 /* consistent PCI memory functions (drm_pci.c) */
 967 drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size,
 968                                 size_t align, dma_addr_t maxaddr);
 969 void    drm_pci_free(struct drm_device *dev, drm_dma_handle_t *dmah);
 970
 971 /* Inline replacements for drm_alloc and friends */
 972 static __inline__ void *
 973 drm_alloc(size_t size, struct malloc_type *area)
 974 {
 975         return malloc(size, area, M_NOWAIT);
 976 }
 977
 978 static __inline__ void *
 979 drm_calloc(size_t nmemb, size_t size, struct malloc_type *area)
 980 {
 981         return malloc(size * nmemb, area, M_NOWAIT | M_ZERO);
 982 }
 983
 984 static __inline__ void *
 985 drm_realloc(void *oldpt, size_t oldsize, size_t size,
 986     struct malloc_type *area)
 987 {
 988         return reallocf(oldpt, size, area, M_NOWAIT);
 989 }
 990
 991 static __inline__ void
 992 drm_free(void *pt, size_t size, struct malloc_type *area)
 993 {
 994         free(pt, area);
 995 }
 996
 997 /* Inline replacements for DRM_IOREMAP macros */
 998 static __inline__ void
 999 drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev)
1000 {
1001         map->handle = drm_ioremap_wc(dev, map);
1002 }
1003 static __inline__ void
1004 drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev)
1005 {
1006         map->handle = drm_ioremap(dev, map);
1007 }
1008 static __inline__ void
1009 drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev)
1010 {
1011         if ( map->handle && map->size )
1012                 drm_ioremapfree(map);
1013 }
1014
1015 static __inline__ struct drm_local_map *
1016 drm_core_findmap(struct drm_device *dev, unsigned long offset)
1017 {
1018         drm_local_map_t *map;
1019
1020         DRM_SPINLOCK_ASSERT(&dev->dev_lock);
1021         TAILQ_FOREACH(map, &dev->maplist, link) {
1022                 if (map->offset == offset)
1023                         return map;
1024         }
1025         return NULL;
1026 }
1027
1028 static __inline__ void drm_core_dropmap(struct drm_map *map)
1029 {
1030 }
1031
1032 #endif /* __KERNEL__ */
1033 #endif /* _DRM_P_H_ */