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             tsleep_interlock(&(queue), PCATCH);                 \
 293             lwkt_serialize_exit(&dev->irq_lock);                \
 294             ret = -tsleep(&(queue), PCATCH | PINTERLOCKED,      \
 295                           "drmwtq", (timeout));                 \
 296         } else {                                                \
 297                 lwkt_serialize_exit(&dev->irq_lock);            \
 298         }                                                       \
 299         DRM_LOCK();                                             \
 300 }
 301
 302 #define printf  kprintf
 303 #define snprintf ksnprintf
 304 #define sscanf  ksscanf
 305 #define malloc  kmalloc
 306 #define realloc krealloc
 307 #define reallocf krealloc       /* XXX XXX XXX */
 308
 309 __inline static void
 310 free(void *addr, struct malloc_type *type)
 311 {
 312         if (addr != NULL)
 313                 kfree(addr, type);
 314 }
 315
 316 #define DRM_ERROR(fmt, ...) \
 317         printf("error: [" DRM_NAME ":pid%d:%s] *ERROR* " fmt,           \
 318             DRM_CURRENTPID, __func__ , ##__VA_ARGS__)
 319
 320 #define DRM_INFO(fmt, ...)  printf("info: [" DRM_NAME "] " fmt , ##__VA_ARGS__)
 321
 322 #define DRM_DEBUG(fmt, ...) do {                                        \
 323         if (drm_debug_flag)                                             \
 324                 printf("[" DRM_NAME ":pid%d:%s] " fmt, DRM_CURRENTPID,  \
 325                         __func__ , ##__VA_ARGS__);                      \
 326 } while (0)
 327
 328 typedef struct drm_pci_id_list
 329 {
 330         int vendor;
 331         int device;
 332         long driver_private;
 333         char *name;
 334 } drm_pci_id_list_t;
 335
 336 struct drm_msi_blacklist_entry
 337 {
 338         int vendor;
 339         int device;
 340 };
 341
 342 #define DRM_AUTH        0x1
 343 #define DRM_MASTER      0x2
 344 #define DRM_ROOT_ONLY   0x4
 345 typedef struct drm_ioctl_desc {
 346         unsigned long cmd;
 347         int (*func)(struct drm_device *dev, void *data,
 348                     struct drm_file *file_priv);
 349         int flags;
 350 } drm_ioctl_desc_t;
 351 /**
 352  * Creates a driver or general drm_ioctl_desc array entry for the given
 353  * ioctl, for use by drm_ioctl().
 354  */
 355 #define DRM_IOCTL_DEF(ioctl, func, flags) \
 356         [DRM_IOCTL_NR(ioctl)] = {ioctl, func, flags}
 357
 358 typedef struct drm_magic_entry {
 359         drm_magic_t            magic;
 360         struct drm_file        *priv;
 361         struct drm_magic_entry *next;
 362 } drm_magic_entry_t;
 363
 364 typedef struct drm_magic_head {
 365         struct drm_magic_entry *head;
 366         struct drm_magic_entry *tail;
 367 } drm_magic_head_t;
 368
 369 typedef struct drm_buf {
 370         int               idx;         /* Index into master buflist          */
 371         int               total;       /* Buffer size                        */
 372         int               order;       /* log-base-2(total)                  */
 373         int               used;        /* Amount of buffer in use (for DMA)  */
 374         unsigned long     offset;      /* Byte offset (used internally)      */
 375         void              *address;    /* Address of buffer                  */
 376         unsigned long     bus_address; /* Bus address of buffer              */
 377         struct drm_buf    *next;       /* Kernel-only: used for free list    */
 378         __volatile__ int  pending;     /* On hardware DMA queue              */
 379         struct drm_file   *file_priv;  /* Unique identifier of holding process */
 380         int               context;     /* Kernel queue for this buffer       */
 381         enum {
 382                 DRM_LIST_NONE    = 0,
 383                 DRM_LIST_FREE    = 1,
 384                 DRM_LIST_WAIT    = 2,
 385                 DRM_LIST_PEND    = 3,
 386                 DRM_LIST_PRIO    = 4,
 387                 DRM_LIST_RECLAIM = 5
 388         }                 list;        /* Which list we're on                */
 389
 390         int               dev_priv_size; /* Size of buffer private stoarge   */
 391         void              *dev_private;  /* Per-buffer private storage       */
 392 } drm_buf_t;
 393
 394 typedef struct drm_freelist {
 395         int               initialized; /* Freelist in use                  */
 396         atomic_t          count;       /* Number of free buffers           */
 397         drm_buf_t         *next;       /* End pointer                      */
 398
 399         int               low_mark;    /* Low water mark                   */
 400         int               high_mark;   /* High water mark                  */
 401 } drm_freelist_t;
 402
 403 typedef struct drm_dma_handle {
 404         void *vaddr;
 405         bus_addr_t busaddr;
 406         bus_dma_tag_t tag;
 407         bus_dmamap_t map;
 408 } drm_dma_handle_t;
 409
 410 typedef struct drm_buf_entry {
 411         int               buf_size;
 412         int               buf_count;
 413         drm_buf_t         *buflist;
 414         int               seg_count;
 415         drm_dma_handle_t  **seglist;
 416         int               page_order;
 417
 418         drm_freelist_t    freelist;
 419 } drm_buf_entry_t;
 420
 421 typedef TAILQ_HEAD(drm_file_list, drm_file) drm_file_list_t;
 422 struct drm_file {
 423         TAILQ_ENTRY(drm_file) link;
 424         struct drm_device *dev;
 425         int               authenticated;
 426         int               master;
 427         int               minor;
 428         pid_t             pid;
 429         uid_t             uid;
 430         int               refs;
 431         drm_magic_t       magic;
 432         unsigned long     ioctl_count;
 433         void             *driver_priv;
 434 };
 435
 436 typedef struct drm_lock_data {
 437         struct drm_hw_lock      *hw_lock;       /* Hardware lock                   */
 438         struct drm_file   *file_priv;   /* Unique identifier of holding process (NULL is kernel)*/
 439         int               lock_queue;   /* Queue of blocked processes      */
 440         unsigned long     lock_time;    /* Time of last lock in jiffies    */
 441 } drm_lock_data_t;
 442
 443 /* This structure, in the struct drm_device, is always initialized while the
 444  * device
 445  * is open.  dev->dma_lock protects the incrementing of dev->buf_use, which
 446  * when set marks that no further bufs may be allocated until device teardown
 447  * occurs (when the last open of the device has closed).  The high/low
 448  * watermarks of bufs are only touched by the X Server, and thus not
 449  * concurrently accessed, so no locking is needed.
 450  */
 451 typedef struct drm_device_dma {
 452         drm_buf_entry_t   bufs[DRM_MAX_ORDER+1];
 453         int               buf_count;
 454         drm_buf_t         **buflist;    /* Vector of pointers info bufs    */
 455         int               seg_count;
 456         int               page_count;
 457         unsigned long     *pagelist;
 458         unsigned long     byte_count;
 459         enum {
 460                 _DRM_DMA_USE_AGP = 0x01,
 461                 _DRM_DMA_USE_SG  = 0x02
 462         } flags;
 463 } drm_device_dma_t;
 464
 465 typedef struct drm_agp_mem {
 466         void               *handle;
 467         unsigned long      bound; /* address */
 468         int                pages;
 469         struct drm_agp_mem *prev;
 470         struct drm_agp_mem *next;
 471 } drm_agp_mem_t;
 472
 473 typedef struct drm_agp_head {
 474         device_t           agpdev;
 475         struct agp_info    info;
 476         const char         *chipset;
 477         drm_agp_mem_t      *memory;
 478         unsigned long      mode;
 479         int                enabled;
 480         int                acquired;
 481         unsigned long      base;
 482         int                mtrr;
 483         int                cant_use_aperture;
 484         unsigned long      page_mask;
 485 } drm_agp_head_t;
 486
 487 typedef struct drm_sg_mem {
 488         unsigned long             handle;
 489         void                     *virtual;
 490         int                       pages;
 491         dma_addr_t               *busaddr;
 492         struct drm_dma_handle    *dmah;         /* Handle to PCI memory  */
 493 } drm_sg_mem_t;
 494
 495 typedef TAILQ_HEAD(drm_map_list, drm_local_map) drm_map_list_t;
 496
 497 typedef struct drm_local_map {
 498         unsigned long   offset;  /* Physical address (0 for SAREA)*/
 499         unsigned long   size;    /* Physical size (bytes)           */
 500         enum drm_map_type       type;    /* Type of memory mapped                   */
 501         enum drm_map_flags      flags;   /* Flags                                   */
 502         void            *handle; /* User-space: "Handle" to pass to mmap    */
 503                                  /* Kernel-space: kernel-virtual address    */
 504         int             mtrr;    /* Boolean: MTRR used */
 505                                  /* Private data                            */
 506         int             rid;     /* PCI resource ID for bus_space */
 507         struct resource *bsr;
 508         bus_space_tag_t bst;
 509         bus_space_handle_t bsh;
 510         drm_dma_handle_t *dmah;
 511         TAILQ_ENTRY(drm_local_map) link;
 512 } drm_local_map_t;
 513
 514 struct drm_vblank_info {
 515         wait_queue_head_t queue;        /* vblank wait queue */
 516         atomic_t count;                 /* number of VBLANK interrupts */
 517                                         /* (driver must alloc the right number of counters) */
 518         atomic_t refcount;              /* number of users of vblank interrupts */
 519         u32 last;                       /* protected by dev->vbl_lock, used */
 520                                         /* for wraparound handling */
 521         int enabled;                    /* so we don't call enable more than */
 522                                         /* once per disable */
 523         int inmodeset;                  /* Display driver is setting mode */
 524 };
 525
 526 /* location of GART table */
 527 #define DRM_ATI_GART_MAIN 1
 528 #define DRM_ATI_GART_FB   2
 529
 530 #define DRM_ATI_GART_PCI  1
 531 #define DRM_ATI_GART_PCIE 2
 532 #define DRM_ATI_GART_IGP  3
 533
 534 struct drm_ati_pcigart_info {
 535         int gart_table_location;
 536         int gart_reg_if;
 537         void *addr;
 538         dma_addr_t bus_addr;
 539         dma_addr_t table_mask;
 540         dma_addr_t member_mask;
 541         struct drm_dma_handle *table_handle;
 542         drm_local_map_t mapping;
 543         int table_size;
 544         struct drm_dma_handle *dmah; /* handle for ATI PCIGART table */
 545 };
 546
 547 #ifndef DMA_BIT_MASK
 548 #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : (1ULL<<(n)) - 1)
 549 #endif
 550
 551 #define upper_32_bits(n) ((u32)(((n) >> 16) >> 16))
 552
 553 struct drm_driver_info {
 554         int     (*load)(struct drm_device *, unsigned long flags);
 555         int     (*firstopen)(struct drm_device *);
 556         int     (*open)(struct drm_device *, struct drm_file *);
 557         void    (*preclose)(struct drm_device *, struct drm_file *file_priv);
 558         void    (*postclose)(struct drm_device *, struct drm_file *);
 559         void    (*lastclose)(struct drm_device *);
 560         int     (*unload)(struct drm_device *);
 561         void    (*reclaim_buffers_locked)(struct drm_device *,
 562                                           struct drm_file *file_priv);
 563         int     (*dma_ioctl)(struct drm_device *dev, void *data,
 564                              struct drm_file *file_priv);
 565         void    (*dma_ready)(struct drm_device *);
 566         int     (*dma_quiescent)(struct drm_device *);
 567         int     (*dma_flush_block_and_flush)(struct drm_device *, int context,
 568                                              enum drm_lock_flags flags);
 569         int     (*dma_flush_unblock)(struct drm_device *, int context,
 570                                      enum drm_lock_flags flags);
 571         int     (*context_ctor)(struct drm_device *dev, int context);
 572         int     (*context_dtor)(struct drm_device *dev, int context);
 573         int     (*kernel_context_switch)(struct drm_device *dev, int old,
 574                                          int new);
 575         int     (*kernel_context_switch_unlock)(struct drm_device *dev);
 576         void    (*irq_preinstall)(struct drm_device *dev);
 577         int     (*irq_postinstall)(struct drm_device *dev);
 578         void    (*irq_uninstall)(struct drm_device *dev);
 579         void    (*irq_handler)(DRM_IRQ_ARGS);
 580         u32     (*get_vblank_counter)(struct drm_device *dev, int crtc);
 581         int     (*enable_vblank)(struct drm_device *dev, int crtc);
 582         void    (*disable_vblank)(struct drm_device *dev, int crtc);
 583
 584         drm_pci_id_list_t *id_entry;    /* PCI ID, name, and chipset private */
 585
 586         /**
 587          * Called by \c drm_device_is_agp.  Typically used to determine if a
 588          * card is really attached to AGP or not.
 589          *
 590          * \param dev  DRM device handle
 591          *
 592          * \returns
 593          * One of three values is returned depending on whether or not the
 594          * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
 595          * (return of 1), or may or may not be AGP (return of 2).
 596          */
 597         int     (*device_is_agp) (struct drm_device * dev);
 598
 599         drm_ioctl_desc_t *ioctls;
 600         int     max_ioctl;
 601
 602         int     buf_priv_size;
 603
 604         int     major;
 605         int     minor;
 606         int     patchlevel;
 607         const char *name;               /* Simple driver name              */
 608         const char *desc;               /* Longer driver name              */
 609         const char *date;               /* Date of last major changes.     */
 610
 611         u32 driver_features;
 612 };
 613
 614 /* Length for the array of resource pointers for drm_get_resource_*. */
 615 #define DRM_MAX_PCI_RESOURCE    6
 616
 617 /**
 618  * DRM device functions structure
 619  */
 620 struct drm_device {
 621         struct drm_driver_info *driver;
 622         drm_pci_id_list_t *id_entry;    /* PCI ID, name, and chipset private */
 623
 624         u_int16_t pci_device;           /* PCI device id */
 625         u_int16_t pci_vendor;           /* PCI vendor id */
 626
 627         char              *unique;      /* Unique identifier: e.g., busid  */
 628         int               unique_len;   /* Length of unique field          */
 629         device_t          device;       /* Device instance from newbus     */
 630         struct cdev       *devnode;     /* Device number for mknod         */
 631         int               if_version;   /* Highest interface version set */
 632
 633         int               flags;        /* Flags to open(2)                */
 634
 635                                 /* Locks */
 636         DRM_SPINTYPE      vbl_lock;     /* protects vblank operations */
 637         DRM_SPINTYPE      dma_lock;     /* protects dev->dma */
 638         struct lwkt_serialize irq_lock; /* protects irq condition checks */
 639         DRM_SPINTYPE      dev_lock;     /* protects everything else */
 640         DRM_SPINTYPE      drw_lock;
 641
 642                                 /* Usage Counters */
 643         int               open_count;   /* Outstanding files open          */
 644         int               buf_use;      /* Buffers in use -- cannot alloc  */
 645
 646                                 /* Performance counters */
 647         unsigned long     counters;
 648         enum drm_stat_type      types[15];
 649         atomic_t          counts[15];
 650
 651                                 /* Authentication */
 652         drm_file_list_t   files;
 653         drm_magic_head_t  magiclist[DRM_HASH_SIZE];
 654
 655         /* Linked list of mappable regions. Protected by dev_lock */
 656         drm_map_list_t    maplist;
 657
 658         drm_local_map_t   **context_sareas;
 659         int               max_context;
 660
 661         drm_lock_data_t   lock;         /* Information on hardware lock    */
 662
 663                                 /* DMA queues (contexts) */
 664         drm_device_dma_t  *dma;         /* Optional pointer for DMA support */
 665
 666                                 /* Context support */
 667         int               irq;          /* Interrupt used by board         */
 668         int               irq_enabled;  /* True if the irq handler is enabled */
 669         int               msi_enabled;  /* MSI enabled */
 670         int               irqrid;       /* Interrupt used by board */
 671         struct resource   *irqr;        /* Resource for interrupt used by board    */
 672         void              *irqh;        /* Handle from bus_setup_intr      */
 673
 674         /* Storage of resource pointers for drm_get_resource_* */
 675         struct resource   *pcir[DRM_MAX_PCI_RESOURCE];
 676         int               pcirid[DRM_MAX_PCI_RESOURCE];
 677
 678         int               pci_domain;
 679         int               pci_bus;
 680         int               pci_slot;
 681         int               pci_func;
 682
 683         atomic_t          context_flag; /* Context swapping flag           */
 684         int               last_context; /* Last current context            */
 685
 686         int               vblank_disable_allowed;
 687         struct callout    vblank_disable_timer;
 688         u32               max_vblank_count;     /* size of vblank counter register */
 689         struct drm_vblank_info *vblank;         /* per crtc vblank info */
 690         int               num_crtcs;
 691
 692         struct sigio      *buf_sigio;   /* Processes waiting for SIGIO     */
 693
 694                                 /* Sysctl support */
 695         struct drm_sysctl_info *sysctl;
 696
 697         drm_agp_head_t    *agp;
 698         drm_sg_mem_t      *sg;  /* Scatter gather memory */
 699         atomic_t          *ctx_bitmap;
 700         void              *dev_private;
 701         unsigned int      agp_buffer_token;
 702         drm_local_map_t   *agp_buffer_map;
 703
 704         /* RB tree of drawable infos */
 705         RB_HEAD(drawable_tree, bsd_drm_drawable_info) drw_head;
 706 };
 707
 708 static __inline__ int drm_core_check_feature(struct drm_device *dev,
 709                                              int feature)
 710 {
 711         return ((dev->driver->driver_features & feature) ? 1 : 0);
 712 }
 713
 714 #if __OS_HAS_AGP
 715 static inline int drm_core_has_AGP(struct drm_device *dev)
 716 {
 717         return drm_core_check_feature(dev, DRIVER_USE_AGP);
 718 }
 719 #else
 720 #define drm_core_has_AGP(dev) (0)
 721 #endif
 722
 723 extern int      drm_debug_flag;
 724
 725 /* Device setup support (drm_drv.c) */
 726 int     drm_probe(device_t kdev, drm_pci_id_list_t *idlist);
 727 int     drm_attach(device_t kdev, drm_pci_id_list_t *idlist);
 728 int     drm_detach(device_t kdev);
 729 d_ioctl_t drm_ioctl;
 730 d_open_t drm_open;
 731 d_close_t drm_close;
 732 d_read_t drm_read;
 733 d_poll_t drm_poll;
 734 d_mmap_t drm_mmap;
 735 extern drm_local_map_t  *drm_getsarea(struct drm_device *dev);
 736
 737 /* File operations helpers (drm_fops.c) */
 738 extern int              drm_open_helper(struct cdev *kdev, int flags, int fmt,
 739                                          DRM_STRUCTPROC *p,
 740                                         struct drm_device *dev);
 741 extern struct drm_file  *drm_find_file_by_proc(struct drm_device *dev,
 742                                         DRM_STRUCTPROC *p);
 743
 744 /* Memory management support (drm_memory.c) */
 745 void    drm_mem_init(void);
 746 void    drm_mem_uninit(void);
 747 void    *drm_ioremap_wc(struct drm_device *dev, drm_local_map_t *map);
 748 void    *drm_ioremap(struct drm_device *dev, drm_local_map_t *map);
 749 void    drm_ioremapfree(drm_local_map_t *map);
 750 int     drm_mtrr_add(unsigned long offset, size_t size, int flags);
 751 int     drm_mtrr_del(int handle, unsigned long offset, size_t size, int flags);
 752
 753 int     drm_context_switch(struct drm_device *dev, int old, int new);
 754 int     drm_context_switch_complete(struct drm_device *dev, int new);
 755
 756 int     drm_ctxbitmap_init(struct drm_device *dev);
 757 void    drm_ctxbitmap_cleanup(struct drm_device *dev);
 758 void    drm_ctxbitmap_free(struct drm_device *dev, int ctx_handle);
 759 int     drm_ctxbitmap_next(struct drm_device *dev);
 760
 761 /* Locking IOCTL support (drm_lock.c) */
 762 int     drm_lock_take(struct drm_lock_data *lock_data,
 763                       unsigned int context);
 764 int     drm_lock_transfer(struct drm_lock_data *lock_data,
 765                           unsigned int context);
 766 int     drm_lock_free(struct drm_lock_data *lock_data,
 767                       unsigned int context);
 768
 769 /* Buffer management support (drm_bufs.c) */
 770 unsigned long drm_get_resource_start(struct drm_device *dev,
 771                                      unsigned int resource);
 772 unsigned long drm_get_resource_len(struct drm_device *dev,
 773                                    unsigned int resource);
 774 void    drm_rmmap(struct drm_device *dev, drm_local_map_t *map);
 775 int     drm_order(unsigned long size);
 776 int     drm_addmap(struct drm_device *dev, unsigned long offset,
 777                    unsigned long size,
 778                    enum drm_map_type type, enum drm_map_flags flags,
 779                    drm_local_map_t **map_ptr);
 780 int     drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc *request);
 781 int     drm_addbufs_sg(struct drm_device *dev, struct drm_buf_desc *request);
 782 int     drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc *request);
 783
 784 /* DMA support (drm_dma.c) */
 785 int     drm_dma_setup(struct drm_device *dev);
 786 void    drm_dma_takedown(struct drm_device *dev);
 787 void    drm_free_buffer(struct drm_device *dev, drm_buf_t *buf);
 788 void    drm_reclaim_buffers(struct drm_device *dev, struct drm_file *file_priv);
 789 #define drm_core_reclaim_buffers drm_reclaim_buffers
 790
 791 /* IRQ support (drm_irq.c) */
 792 int     drm_irq_install(struct drm_device *dev);
 793 int     drm_irq_uninstall(struct drm_device *dev);
 794 irqreturn_t drm_irq_handler(DRM_IRQ_ARGS);
 795 void    drm_driver_irq_preinstall(struct drm_device *dev);
 796 void    drm_driver_irq_postinstall(struct drm_device *dev);
 797 void    drm_driver_irq_uninstall(struct drm_device *dev);
 798 void    drm_handle_vblank(struct drm_device *dev, int crtc);
 799 u32     drm_vblank_count(struct drm_device *dev, int crtc);
 800 int     drm_vblank_get(struct drm_device *dev, int crtc);
 801 void    drm_vblank_put(struct drm_device *dev, int crtc);
 802 void    drm_vblank_cleanup(struct drm_device *dev);
 803 int     drm_vblank_wait(struct drm_device *dev, unsigned int *vbl_seq);
 804 int     drm_vblank_init(struct drm_device *dev, int num_crtcs);
 805 int     drm_modeset_ctl(struct drm_device *dev, void *data,
 806                         struct drm_file *file_priv);
 807
 808 /* AGP/PCI Express/GART support (drm_agpsupport.c) */
 809 int     drm_device_is_agp(struct drm_device *dev);
 810 int     drm_device_is_pcie(struct drm_device *dev);
 811 drm_agp_head_t *drm_agp_init(void);
 812 int     drm_agp_acquire(struct drm_device *dev);
 813 int     drm_agp_release(struct drm_device *dev);
 814 int     drm_agp_info(struct drm_device * dev, struct drm_agp_info *info);
 815 int     drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode);
 816 void    *drm_agp_allocate_memory(size_t pages, u32 type);
 817 int     drm_agp_free_memory(void *handle);
 818 int     drm_agp_bind_memory(void *handle, off_t start);
 819 int     drm_agp_unbind_memory(void *handle);
 820 int     drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request);
 821 int     drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request);
 822 int     drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request);
 823 int     drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request);
 824
 825 /* Scatter Gather Support (drm_scatter.c) */
 826 void    drm_sg_cleanup(drm_sg_mem_t *entry);
 827 int     drm_sg_alloc(struct drm_device *dev, struct drm_scatter_gather * request);
 828
 829 /* sysctl support (drm_sysctl.h) */
 830 extern int              drm_sysctl_init(struct drm_device *dev);
 831 extern int              drm_sysctl_cleanup(struct drm_device *dev);
 832
 833 /* ATI PCIGART support (ati_pcigart.c) */
 834 int     drm_ati_pcigart_init(struct drm_device *dev,
 835                                 struct drm_ati_pcigart_info *gart_info);
 836 int     drm_ati_pcigart_cleanup(struct drm_device *dev,
 837                                 struct drm_ati_pcigart_info *gart_info);
 838
 839 /* Locking IOCTL support (drm_drv.c) */
 840 int     drm_lock(struct drm_device *dev, void *data,
 841                  struct drm_file *file_priv);
 842 int     drm_unlock(struct drm_device *dev, void *data,
 843                    struct drm_file *file_priv);
 844 int     drm_version(struct drm_device *dev, void *data,
 845                     struct drm_file *file_priv);
 846 int     drm_setversion(struct drm_device *dev, void *data,
 847                        struct drm_file *file_priv);
 848
 849 /* Misc. IOCTL support (drm_ioctl.c) */
 850 int     drm_irq_by_busid(struct drm_device *dev, void *data,
 851                          struct drm_file *file_priv);
 852 int     drm_getunique(struct drm_device *dev, void *data,
 853                       struct drm_file *file_priv);
 854 int     drm_setunique(struct drm_device *dev, void *data,
 855                       struct drm_file *file_priv);
 856 int     drm_getmap(struct drm_device *dev, void *data,
 857                    struct drm_file *file_priv);
 858 int     drm_getclient(struct drm_device *dev, void *data,
 859                       struct drm_file *file_priv);
 860 int     drm_getstats(struct drm_device *dev, void *data,
 861                      struct drm_file *file_priv);
 862 int     drm_noop(struct drm_device *dev, void *data,
 863                  struct drm_file *file_priv);
 864
 865 /* Context IOCTL support (drm_context.c) */
 866 int     drm_resctx(struct drm_device *dev, void *data,
 867                    struct drm_file *file_priv);
 868 int     drm_addctx(struct drm_device *dev, void *data,
 869                    struct drm_file *file_priv);
 870 int     drm_modctx(struct drm_device *dev, void *data,
 871                    struct drm_file *file_priv);
 872 int     drm_getctx(struct drm_device *dev, void *data,
 873                    struct drm_file *file_priv);
 874 int     drm_switchctx(struct drm_device *dev, void *data,
 875                       struct drm_file *file_priv);
 876 int     drm_newctx(struct drm_device *dev, void *data,
 877                    struct drm_file *file_priv);
 878 int     drm_rmctx(struct drm_device *dev, void *data,
 879                   struct drm_file *file_priv);
 880 int     drm_setsareactx(struct drm_device *dev, void *data,
 881                         struct drm_file *file_priv);
 882 int     drm_getsareactx(struct drm_device *dev, void *data,
 883                         struct drm_file *file_priv);
 884
 885 /* Drawable IOCTL support (drm_drawable.c) */
 886 int     drm_adddraw(struct drm_device *dev, void *data,
 887                     struct drm_file *file_priv);
 888 int     drm_rmdraw(struct drm_device *dev, void *data,
 889                    struct drm_file *file_priv);
 890 int     drm_update_draw(struct drm_device *dev, void *data,
 891                         struct drm_file *file_priv);
 892 struct drm_drawable_info *drm_get_drawable_info(struct drm_device *dev,
 893                                                 int handle);
 894
 895 /* Drawable support (drm_drawable.c) */
 896 void drm_drawable_free_all(struct drm_device *dev);
 897
 898 /* Authentication IOCTL support (drm_auth.c) */
 899 int     drm_getmagic(struct drm_device *dev, void *data,
 900                      struct drm_file *file_priv);
 901 int     drm_authmagic(struct drm_device *dev, void *data,
 902                       struct drm_file *file_priv);
 903
 904 /* Buffer management support (drm_bufs.c) */
 905 int     drm_addmap_ioctl(struct drm_device *dev, void *data,
 906                          struct drm_file *file_priv);
 907 int     drm_rmmap_ioctl(struct drm_device *dev, void *data,
 908                         struct drm_file *file_priv);
 909 int     drm_addbufs(struct drm_device *dev, void *data,
 910                     struct drm_file *file_priv);
 911 int     drm_infobufs(struct drm_device *dev, void *data,
 912                      struct drm_file *file_priv);
 913 int     drm_markbufs(struct drm_device *dev, void *data,
 914                      struct drm_file *file_priv);
 915 int     drm_freebufs(struct drm_device *dev, void *data,
 916                      struct drm_file *file_priv);
 917 int     drm_mapbufs(struct drm_device *dev, void *data,
 918                     struct drm_file *file_priv);
 919
 920 /* DMA support (drm_dma.c) */
 921 int     drm_dma(struct drm_device *dev, void *data, struct drm_file *file_priv);
 922
 923 /* IRQ support (drm_irq.c) */
 924 int     drm_control(struct drm_device *dev, void *data,
 925                     struct drm_file *file_priv);
 926 int     drm_wait_vblank(struct drm_device *dev, void *data,
 927                         struct drm_file *file_priv);
 928
 929 /* AGP/GART support (drm_agpsupport.c) */
 930 int     drm_agp_acquire_ioctl(struct drm_device *dev, void *data,
 931                               struct drm_file *file_priv);
 932 int     drm_agp_release_ioctl(struct drm_device *dev, void *data,
 933                               struct drm_file *file_priv);
 934 int     drm_agp_enable_ioctl(struct drm_device *dev, void *data,
 935                              struct drm_file *file_priv);
 936 int     drm_agp_info_ioctl(struct drm_device *dev, void *data,
 937                            struct drm_file *file_priv);
 938 int     drm_agp_alloc_ioctl(struct drm_device *dev, void *data,
 939                             struct drm_file *file_priv);
 940 int     drm_agp_free_ioctl(struct drm_device *dev, void *data,
 941                            struct drm_file *file_priv);
 942 int     drm_agp_unbind_ioctl(struct drm_device *dev, void *data,
 943                              struct drm_file *file_priv);
 944 int     drm_agp_bind_ioctl(struct drm_device *dev, void *data,
 945                            struct drm_file *file_priv);
 946
 947 /* Scatter Gather Support (drm_scatter.c) */
 948 int     drm_sg_alloc_ioctl(struct drm_device *dev, void *data,
 949                            struct drm_file *file_priv);
 950 int     drm_sg_free(struct drm_device *dev, void *data,
 951                     struct drm_file *file_priv);
 952
 953 /* consistent PCI memory functions (drm_pci.c) */
 954 drm_dma_handle_t *drm_pci_alloc(struct drm_device *dev, size_t size,
 955                                 size_t align, dma_addr_t maxaddr);
 956 void    drm_pci_free(struct drm_device *dev, drm_dma_handle_t *dmah);
 957
 958 /* Inline replacements for drm_alloc and friends */
 959 static __inline__ void *
 960 drm_alloc(size_t size, struct malloc_type *area)
 961 {
 962         return malloc(size, area, M_NOWAIT);
 963 }
 964
 965 static __inline__ void *
 966 drm_calloc(size_t nmemb, size_t size, struct malloc_type *area)
 967 {
 968         return malloc(size * nmemb, area, M_NOWAIT | M_ZERO);
 969 }
 970
 971 static __inline__ void *
 972 drm_realloc(void *oldpt, size_t oldsize, size_t size,
 973     struct malloc_type *area)
 974 {
 975         return reallocf(oldpt, size, area, M_NOWAIT);
 976 }
 977
 978 static __inline__ void
 979 drm_free(void *pt, size_t size, struct malloc_type *area)
 980 {
 981         free(pt, area);
 982 }
 983
 984 /* Inline replacements for DRM_IOREMAP macros */
 985 static __inline__ void
 986 drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev)
 987 {
 988         map->handle = drm_ioremap_wc(dev, map);
 989 }
 990 static __inline__ void
 991 drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev)
 992 {
 993         map->handle = drm_ioremap(dev, map);
 994 }
 995 static __inline__ void
 996 drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev)
 997 {
 998         if ( map->handle && map->size )
 999                 drm_ioremapfree(map);
1000 }
1001
1002 static __inline__ struct drm_local_map *
1003 drm_core_findmap(struct drm_device *dev, unsigned long offset)
1004 {
1005         drm_local_map_t *map;
1006
1007         DRM_SPINLOCK_ASSERT(&dev->dev_lock);
1008         TAILQ_FOREACH(map, &dev->maplist, link) {
1009                 if (map->offset == offset)
1010                         return map;
1011         }
1012         return NULL;
1013 }
1014
1015 static __inline__ void drm_core_dropmap(struct drm_map *map)
1016 {
1017 }
1018
1019 #endif /* __KERNEL__ */
1020 #endif /* _DRM_P_H_ */