1 /* gamma.c -- 3dlabs GMX 2000 driver -*- linux-c -*-
2 * Created: Mon Jan 4 08:58:31 1999 by faith@precisioninsight.com
3 * Revised: Fri Aug 20 22:48:11 1999 by faith@precisioninsight.com
5 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice (including the next
16 * paragraph) shall be included in all copies or substantial portions of the
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22 * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
23 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
24 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
25 * DEALINGS IN THE SOFTWARE.
27 * $PI: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/generic/gamma_drv.c,v 1.17 1999/08/30 13:05:00 faith Exp $
34 #include "gamma_drv.h"
35 EXPORT_SYMBOL(gamma_init
);
36 EXPORT_SYMBOL(gamma_cleanup
);
38 #define GAMMA_NAME "gamma"
39 #define GAMMA_DESC "3dlabs GMX 2000"
40 #define GAMMA_DATE "19990830"
43 #define GAMMA_PATCHLEVEL 5
45 static drm_device_t gamma_device
;
47 static struct file_operations gamma_fops
= {
50 release
: gamma_release
,
57 static struct miscdevice gamma_misc
= {
58 minor
: MISC_DYNAMIC_MINOR
,
63 static drm_ioctl_desc_t gamma_ioctls
[] = {
64 [DRM_IOCTL_NR(DRM_IOCTL_VERSION
)] = { gamma_version
, 0, 0 },
65 [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE
)] = { drm_getunique
, 0, 0 },
66 [DRM_IOCTL_NR(DRM_IOCTL_GET_MAGIC
)] = { drm_getmagic
, 0, 0 },
67 [DRM_IOCTL_NR(DRM_IOCTL_IRQ_BUSID
)] = { drm_irq_busid
, 0, 1 },
69 [DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE
)] = { drm_setunique
, 1, 1 },
70 [DRM_IOCTL_NR(DRM_IOCTL_BLOCK
)] = { drm_block
, 1, 1 },
71 [DRM_IOCTL_NR(DRM_IOCTL_UNBLOCK
)] = { drm_unblock
, 1, 1 },
72 [DRM_IOCTL_NR(DRM_IOCTL_CONTROL
)] = { gamma_control
, 1, 1 },
73 [DRM_IOCTL_NR(DRM_IOCTL_AUTH_MAGIC
)] = { drm_authmagic
, 1, 1 },
74 [DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP
)] = { drm_addmap
, 1, 1 },
75 [DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS
)] = { drm_addbufs
, 1, 1 },
76 [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS
)] = { drm_markbufs
, 1, 1 },
77 [DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS
)] = { drm_infobufs
, 1, 0 },
78 [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS
)] = { drm_mapbufs
, 1, 0 },
79 [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS
)] = { drm_freebufs
, 1, 0 },
81 [DRM_IOCTL_NR(DRM_IOCTL_ADD_CTX
)] = { drm_addctx
, 1, 1 },
82 [DRM_IOCTL_NR(DRM_IOCTL_RM_CTX
)] = { drm_rmctx
, 1, 1 },
83 [DRM_IOCTL_NR(DRM_IOCTL_MOD_CTX
)] = { drm_modctx
, 1, 1 },
84 [DRM_IOCTL_NR(DRM_IOCTL_GET_CTX
)] = { drm_getctx
, 1, 0 },
85 [DRM_IOCTL_NR(DRM_IOCTL_SWITCH_CTX
)] = { drm_switchctx
, 1, 1 },
86 [DRM_IOCTL_NR(DRM_IOCTL_NEW_CTX
)] = { drm_newctx
, 1, 1 },
87 [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX
)] = { drm_resctx
, 1, 0 },
88 [DRM_IOCTL_NR(DRM_IOCTL_ADD_DRAW
)] = { drm_adddraw
, 1, 1 },
89 [DRM_IOCTL_NR(DRM_IOCTL_RM_DRAW
)] = { drm_rmdraw
, 1, 1 },
90 [DRM_IOCTL_NR(DRM_IOCTL_DMA
)] = { gamma_dma
, 1, 0 },
91 [DRM_IOCTL_NR(DRM_IOCTL_LOCK
)] = { gamma_lock
, 1, 0 },
92 [DRM_IOCTL_NR(DRM_IOCTL_UNLOCK
)] = { gamma_unlock
, 1, 0 },
93 [DRM_IOCTL_NR(DRM_IOCTL_FINISH
)] = { drm_finish
, 1, 0 },
95 #define GAMMA_IOCTL_COUNT DRM_ARRAY_SIZE(gamma_ioctls)
98 int init_module(void);
99 void cleanup_module(void);
100 static char *gamma
= NULL
;
102 MODULE_AUTHOR("Precision Insight, Inc., Cedar Park, Texas.");
103 MODULE_DESCRIPTION("3dlabs GMX 2000");
104 MODULE_PARM(gamma
, "s");
106 /* init_module is called when insmod is used to load the module */
108 int init_module(void)
113 /* cleanup_module is called when rmmod is used to unload the module */
115 void cleanup_module(void)
122 /* gamma_setup is called by the kernel to parse command-line options passed
123 * via the boot-loader (e.g., LILO). It calls the insmod option routine,
126 * This is not currently supported, since it requires changes to
127 * linux/init/main.c. */
130 void __init
gamma_setup(char *str
, int *ints
)
133 DRM_ERROR("Illegal command line format, ignored\n");
136 drm_parse_options(str
);
140 static int gamma_setup(drm_device_t
*dev
)
144 atomic_set(&dev
->ioctl_count
, 0);
145 atomic_set(&dev
->vma_count
, 0);
147 atomic_set(&dev
->buf_alloc
, 0);
151 atomic_set(&dev
->total_open
, 0);
152 atomic_set(&dev
->total_close
, 0);
153 atomic_set(&dev
->total_ioctl
, 0);
154 atomic_set(&dev
->total_irq
, 0);
155 atomic_set(&dev
->total_ctx
, 0);
156 atomic_set(&dev
->total_locks
, 0);
157 atomic_set(&dev
->total_unlocks
, 0);
158 atomic_set(&dev
->total_contends
, 0);
159 atomic_set(&dev
->total_sleeps
, 0);
161 for (i
= 0; i
< DRM_HASH_SIZE
; i
++) {
162 dev
->magiclist
[i
].head
= NULL
;
163 dev
->magiclist
[i
].tail
= NULL
;
168 dev
->lock
.hw_lock
= NULL
;
169 init_waitqueue_head(&dev
->lock
.lock_queue
);
170 dev
->queue_count
= 0;
171 dev
->queue_reserved
= 0;
172 dev
->queue_slots
= 0;
173 dev
->queuelist
= NULL
;
175 dev
->context_flag
= 0;
176 dev
->interrupt_flag
= 0;
178 dev
->last_context
= 0;
179 dev
->last_switch
= 0;
180 dev
->last_checked
= 0;
181 init_timer(&dev
->timer
);
182 init_waitqueue_head(&dev
->context_wait
);
184 memset(&dev
->histo
, 0, sizeof(dev
->histo
));
189 dev
->buf_rp
= dev
->buf
;
190 dev
->buf_wp
= dev
->buf
;
191 dev
->buf_end
= dev
->buf
+ DRM_BSZ
;
192 dev
->buf_async
= NULL
;
193 init_waitqueue_head(&dev
->buf_readers
);
194 init_waitqueue_head(&dev
->buf_writers
);
198 /* The kernel's context could be created here, but is now created
199 in drm_dma_enqueue. This is more resource-efficient for
200 hardware that does not do DMA, but may mean that
201 drm_select_queue fails between the time the interrupt is
202 initialized and the time the queues are initialized. */
208 static int gamma_takedown(drm_device_t
*dev
)
211 drm_magic_entry_t
*pt
, *next
;
213 drm_vma_entry_t
*vma
, *vma_next
;
217 if (dev
->irq
) gamma_irq_uninstall(dev
);
219 down(&dev
->struct_sem
);
220 del_timer(&dev
->timer
);
223 drm_free(dev
->devname
, strlen(dev
->devname
)+1, DRM_MEM_DRIVER
);
228 drm_free(dev
->unique
, strlen(dev
->unique
)+1, DRM_MEM_DRIVER
);
233 for (i
= 0; i
< DRM_HASH_SIZE
; i
++) {
234 for (pt
= dev
->magiclist
[i
].head
; pt
; pt
= next
) {
236 drm_free(pt
, sizeof(*pt
), DRM_MEM_MAGIC
);
238 dev
->magiclist
[i
].head
= dev
->magiclist
[i
].tail
= NULL
;
241 /* Clear vma list (only built for debugging) */
243 for (vma
= dev
->vmalist
; vma
; vma
= vma_next
) {
244 vma_next
= vma
->next
;
245 drm_free(vma
, sizeof(*vma
), DRM_MEM_VMAS
);
250 /* Clear map area and mtrr information */
252 for (i
= 0; i
< dev
->map_count
; i
++) {
253 map
= dev
->maplist
[i
];
256 case _DRM_FRAME_BUFFER
:
258 if (map
->mtrr
>= 0) {
260 retcode
= mtrr_del(map
->mtrr
,
263 DRM_DEBUG("mtrr_del = %d\n", retcode
);
266 drm_ioremapfree(map
->handle
, map
->size
);
269 drm_free_pages((unsigned long)map
->handle
,
275 drm_free(map
, sizeof(*map
), DRM_MEM_MAPS
);
277 drm_free(dev
->maplist
,
278 dev
->map_count
* sizeof(*dev
->maplist
),
284 if (dev
->queuelist
) {
285 for (i
= 0; i
< dev
->queue_count
; i
++) {
286 drm_waitlist_destroy(&dev
->queuelist
[i
]->waitlist
);
287 if (dev
->queuelist
[i
]) {
288 drm_free(dev
->queuelist
[i
],
289 sizeof(*dev
->queuelist
[0]),
291 dev
->queuelist
[i
] = NULL
;
294 drm_free(dev
->queuelist
,
295 dev
->queue_slots
* sizeof(*dev
->queuelist
),
297 dev
->queuelist
= NULL
;
300 drm_dma_takedown(dev
);
302 dev
->queue_count
= 0;
303 if (dev
->lock
.hw_lock
) {
304 dev
->lock
.hw_lock
= NULL
; /* SHM removed */
306 wake_up_interruptible(&dev
->lock
.lock_queue
);
308 up(&dev
->struct_sem
);
313 /* gamma_init is called via init_module at module load time, or via
314 * linux/init/main.c (this is not currently supported). */
319 drm_device_t
*dev
= &gamma_device
;
323 memset((void *)dev
, 0, sizeof(*dev
));
324 dev
->count_lock
= SPIN_LOCK_UNLOCKED
;
325 sema_init(&dev
->struct_sem
, 1);
328 drm_parse_options(gamma
);
331 if ((retcode
= misc_register(&gamma_misc
))) {
332 DRM_ERROR("Cannot register \"%s\"\n", GAMMA_NAME
);
335 dev
->device
= MKDEV(MISC_MAJOR
, gamma_misc
.minor
);
336 dev
->name
= GAMMA_NAME
;
341 DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
352 /* gamma_cleanup is called via cleanup_module at module unload time. */
354 void gamma_cleanup(void)
356 drm_device_t
*dev
= &gamma_device
;
361 if (misc_deregister(&gamma_misc
)) {
362 DRM_ERROR("Cannot unload module\n");
364 DRM_INFO("Module unloaded\n");
369 int gamma_version(struct inode
*inode
, struct file
*filp
, unsigned int cmd
,
372 drm_version_t version
;
375 copy_from_user_ret(&version
,
376 (drm_version_t
*)arg
,
380 #define DRM_COPY(name,value) \
381 len = strlen(value); \
382 if (len > name##_len) len = name##_len; \
383 name##_len = strlen(value); \
385 copy_to_user_ret(name, value, len, -EFAULT); \
388 version
.version_major
= GAMMA_MAJOR
;
389 version
.version_minor
= GAMMA_MINOR
;
390 version
.version_patchlevel
= GAMMA_PATCHLEVEL
;
392 DRM_COPY(version
.name
, GAMMA_NAME
);
393 DRM_COPY(version
.date
, GAMMA_DATE
);
394 DRM_COPY(version
.desc
, GAMMA_DESC
);
396 copy_to_user_ret((drm_version_t
*)arg
,
403 int gamma_open(struct inode
*inode
, struct file
*filp
)
405 drm_device_t
*dev
= &gamma_device
;
408 DRM_DEBUG("open_count = %d\n", dev
->open_count
);
409 if (!(retcode
= drm_open_helper(inode
, filp
, dev
))) {
411 atomic_inc(&dev
->total_open
);
412 spin_lock(&dev
->count_lock
);
413 if (!dev
->open_count
++) {
414 spin_unlock(&dev
->count_lock
);
415 return gamma_setup(dev
);
417 spin_unlock(&dev
->count_lock
);
422 int gamma_release(struct inode
*inode
, struct file
*filp
)
424 drm_file_t
*priv
= filp
->private_data
;
425 drm_device_t
*dev
= priv
->dev
;
428 DRM_DEBUG("open_count = %d\n", dev
->open_count
);
429 if (!(retcode
= drm_release(inode
, filp
))) {
431 atomic_inc(&dev
->total_close
);
432 spin_lock(&dev
->count_lock
);
433 if (!--dev
->open_count
) {
434 if (atomic_read(&dev
->ioctl_count
) || dev
->blocked
) {
435 DRM_ERROR("Device busy: %d %d\n",
436 atomic_read(&dev
->ioctl_count
),
438 spin_unlock(&dev
->count_lock
);
441 spin_unlock(&dev
->count_lock
);
442 return gamma_takedown(dev
);
444 spin_unlock(&dev
->count_lock
);
449 /* drm_ioctl is called whenever a process performs an ioctl on /dev/drm. */
451 int gamma_ioctl(struct inode
*inode
, struct file
*filp
, unsigned int cmd
,
454 int nr
= DRM_IOCTL_NR(cmd
);
455 drm_file_t
*priv
= filp
->private_data
;
456 drm_device_t
*dev
= priv
->dev
;
458 drm_ioctl_desc_t
*ioctl
;
461 atomic_inc(&dev
->ioctl_count
);
462 atomic_inc(&dev
->total_ioctl
);
465 DRM_DEBUG("pid = %d, cmd = 0x%02x, nr = 0x%02x, dev 0x%x, auth = %d\n",
466 current
->pid
, cmd
, nr
, dev
->device
, priv
->authenticated
);
468 if (nr
>= GAMMA_IOCTL_COUNT
) {
471 ioctl
= &gamma_ioctls
[nr
];
475 DRM_DEBUG("no function\n");
477 } else if ((ioctl
->root_only
&& !capable(CAP_SYS_ADMIN
))
478 || (ioctl
->auth_needed
&& !priv
->authenticated
)) {
481 retcode
= (func
)(inode
, filp
, cmd
, arg
);
485 atomic_dec(&dev
->ioctl_count
);
490 int gamma_unlock(struct inode
*inode
, struct file
*filp
, unsigned int cmd
,
493 drm_file_t
*priv
= filp
->private_data
;
494 drm_device_t
*dev
= priv
->dev
;
497 copy_from_user_ret(&lock
, (drm_lock_t
*)arg
, sizeof(lock
), -EFAULT
);
499 if (lock
.context
== DRM_KERNEL_CONTEXT
) {
500 DRM_ERROR("Process %d using kernel context %d\n",
501 current
->pid
, lock
.context
);
505 DRM_DEBUG("%d frees lock (%d holds)\n",
507 _DRM_LOCKING_CONTEXT(dev
->lock
.hw_lock
->lock
));
508 atomic_inc(&dev
->total_unlocks
);
509 if (_DRM_LOCK_IS_CONT(dev
->lock
.hw_lock
->lock
))
510 atomic_inc(&dev
->total_contends
);
511 drm_lock_transfer(&dev
->lock
.hw_lock
->lock
, DRM_KERNEL_CONTEXT
);
512 gamma_dma_schedule(dev
, 1);
513 if (!dev
->context_flag
) {
514 if (drm_lock_free(dev
, &dev
->lock
.hw_lock
->lock
,
515 DRM_KERNEL_CONTEXT
)) {
519 #if DRM_DMA_HISTOGRAM
520 atomic_inc(&dev
->histo
.lhld
[drm_histogram_slot(get_cycles()