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ASoC: wm8997: Add inputs for noise and mic mixers
[deliverable/linux.git] / drivers / gpu / drm / exynos / exynos_drm_g2d.c
1 /*
2 * Copyright (C) 2012 Samsung Electronics Co.Ltd
3 * Authors: Joonyoung Shim <jy0922.shim@samsung.com>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundationr
8 */
9
10 #include <linux/kernel.h>
11 #include <linux/module.h>
12 #include <linux/clk.h>
13 #include <linux/err.h>
14 #include <linux/interrupt.h>
15 #include <linux/io.h>
16 #include <linux/platform_device.h>
17 #include <linux/pm_runtime.h>
18 #include <linux/slab.h>
19 #include <linux/workqueue.h>
20 #include <linux/dma-mapping.h>
21 #include <linux/dma-attrs.h>
22 #include <linux/of.h>
23
24 #include <drm/drmP.h>
25 #include <drm/exynos_drm.h>
26 #include "exynos_drm_drv.h"
27 #include "exynos_drm_gem.h"
28 #include "exynos_drm_iommu.h"
29
30 #define G2D_HW_MAJOR_VER 4
31 #define G2D_HW_MINOR_VER 1
32
33 /* vaild register range set from user: 0x0104 ~ 0x0880 */
34 #define G2D_VALID_START 0x0104
35 #define G2D_VALID_END 0x0880
36
37 /* general registers */
38 #define G2D_SOFT_RESET 0x0000
39 #define G2D_INTEN 0x0004
40 #define G2D_INTC_PEND 0x000C
41 #define G2D_DMA_SFR_BASE_ADDR 0x0080
42 #define G2D_DMA_COMMAND 0x0084
43 #define G2D_DMA_STATUS 0x008C
44 #define G2D_DMA_HOLD_CMD 0x0090
45
46 /* command registers */
47 #define G2D_BITBLT_START 0x0100
48
49 /* registers for base address */
50 #define G2D_SRC_BASE_ADDR 0x0304
51 #define G2D_SRC_COLOR_MODE 0x030C
52 #define G2D_SRC_LEFT_TOP 0x0310
53 #define G2D_SRC_RIGHT_BOTTOM 0x0314
54 #define G2D_SRC_PLANE2_BASE_ADDR 0x0318
55 #define G2D_DST_BASE_ADDR 0x0404
56 #define G2D_DST_COLOR_MODE 0x040C
57 #define G2D_DST_LEFT_TOP 0x0410
58 #define G2D_DST_RIGHT_BOTTOM 0x0414
59 #define G2D_DST_PLANE2_BASE_ADDR 0x0418
60 #define G2D_PAT_BASE_ADDR 0x0500
61 #define G2D_MSK_BASE_ADDR 0x0520
62
63 /* G2D_SOFT_RESET */
64 #define G2D_SFRCLEAR (1 << 1)
65 #define G2D_R (1 << 0)
66
67 /* G2D_INTEN */
68 #define G2D_INTEN_ACF (1 << 3)
69 #define G2D_INTEN_UCF (1 << 2)
70 #define G2D_INTEN_GCF (1 << 1)
71 #define G2D_INTEN_SCF (1 << 0)
72
73 /* G2D_INTC_PEND */
74 #define G2D_INTP_ACMD_FIN (1 << 3)
75 #define G2D_INTP_UCMD_FIN (1 << 2)
76 #define G2D_INTP_GCMD_FIN (1 << 1)
77 #define G2D_INTP_SCMD_FIN (1 << 0)
78
79 /* G2D_DMA_COMMAND */
80 #define G2D_DMA_HALT (1 << 2)
81 #define G2D_DMA_CONTINUE (1 << 1)
82 #define G2D_DMA_START (1 << 0)
83
84 /* G2D_DMA_STATUS */
85 #define G2D_DMA_LIST_DONE_COUNT (0xFF << 17)
86 #define G2D_DMA_BITBLT_DONE_COUNT (0xFFFF << 1)
87 #define G2D_DMA_DONE (1 << 0)
88 #define G2D_DMA_LIST_DONE_COUNT_OFFSET 17
89
90 /* G2D_DMA_HOLD_CMD */
91 #define G2D_USER_HOLD (1 << 2)
92 #define G2D_LIST_HOLD (1 << 1)
93 #define G2D_BITBLT_HOLD (1 << 0)
94
95 /* G2D_BITBLT_START */
96 #define G2D_START_CASESEL (1 << 2)
97 #define G2D_START_NHOLT (1 << 1)
98 #define G2D_START_BITBLT (1 << 0)
99
100 /* buffer color format */
101 #define G2D_FMT_XRGB8888 0
102 #define G2D_FMT_ARGB8888 1
103 #define G2D_FMT_RGB565 2
104 #define G2D_FMT_XRGB1555 3
105 #define G2D_FMT_ARGB1555 4
106 #define G2D_FMT_XRGB4444 5
107 #define G2D_FMT_ARGB4444 6
108 #define G2D_FMT_PACKED_RGB888 7
109 #define G2D_FMT_A8 11
110 #define G2D_FMT_L8 12
111
112 /* buffer valid length */
113 #define G2D_LEN_MIN 1
114 #define G2D_LEN_MAX 8000
115
116 #define G2D_CMDLIST_SIZE (PAGE_SIZE / 4)
117 #define G2D_CMDLIST_NUM 64
118 #define G2D_CMDLIST_POOL_SIZE (G2D_CMDLIST_SIZE * G2D_CMDLIST_NUM)
119 #define G2D_CMDLIST_DATA_NUM (G2D_CMDLIST_SIZE / sizeof(u32) - 2)
120
121 /* maximum buffer pool size of userptr is 64MB as default */
122 #define MAX_POOL (64 * 1024 * 1024)
123
124 enum {
125 BUF_TYPE_GEM = 1,
126 BUF_TYPE_USERPTR,
127 };
128
129 enum g2d_reg_type {
130 REG_TYPE_NONE = -1,
131 REG_TYPE_SRC,
132 REG_TYPE_SRC_PLANE2,
133 REG_TYPE_DST,
134 REG_TYPE_DST_PLANE2,
135 REG_TYPE_PAT,
136 REG_TYPE_MSK,
137 MAX_REG_TYPE_NR
138 };
139
140 /* cmdlist data structure */
141 struct g2d_cmdlist {
142 u32 head;
143 unsigned long data[G2D_CMDLIST_DATA_NUM];
144 u32 last; /* last data offset */
145 };
146
147 /*
148 * A structure of buffer description
149 *
150 * @format: color format
151 * @left_x: the x coordinates of left top corner
152 * @top_y: the y coordinates of left top corner
153 * @right_x: the x coordinates of right bottom corner
154 * @bottom_y: the y coordinates of right bottom corner
155 *
156 */
157 struct g2d_buf_desc {
158 unsigned int format;
159 unsigned int left_x;
160 unsigned int top_y;
161 unsigned int right_x;
162 unsigned int bottom_y;
163 };
164
165 /*
166 * A structure of buffer information
167 *
168 * @map_nr: manages the number of mapped buffers
169 * @reg_types: stores regitster type in the order of requested command
170 * @handles: stores buffer handle in its reg_type position
171 * @types: stores buffer type in its reg_type position
172 * @descs: stores buffer description in its reg_type position
173 *
174 */
175 struct g2d_buf_info {
176 unsigned int map_nr;
177 enum g2d_reg_type reg_types[MAX_REG_TYPE_NR];
178 unsigned long handles[MAX_REG_TYPE_NR];
179 unsigned int types[MAX_REG_TYPE_NR];
180 struct g2d_buf_desc descs[MAX_REG_TYPE_NR];
181 };
182
183 struct drm_exynos_pending_g2d_event {
184 struct drm_pending_event base;
185 struct drm_exynos_g2d_event event;
186 };
187
188 struct g2d_cmdlist_userptr {
189 struct list_head list;
190 dma_addr_t dma_addr;
191 unsigned long userptr;
192 unsigned long size;
193 struct page **pages;
194 unsigned int npages;
195 struct sg_table *sgt;
196 struct vm_area_struct *vma;
197 atomic_t refcount;
198 bool in_pool;
199 bool out_of_list;
200 };
201 struct g2d_cmdlist_node {
202 struct list_head list;
203 struct g2d_cmdlist *cmdlist;
204 dma_addr_t dma_addr;
205 struct g2d_buf_info buf_info;
206
207 struct drm_exynos_pending_g2d_event *event;
208 };
209
210 struct g2d_runqueue_node {
211 struct list_head list;
212 struct list_head run_cmdlist;
213 struct list_head event_list;
214 struct drm_file *filp;
215 pid_t pid;
216 struct completion complete;
217 int async;
218 };
219
220 struct g2d_data {
221 struct device *dev;
222 struct clk *gate_clk;
223 void __iomem *regs;
224 int irq;
225 struct workqueue_struct *g2d_workq;
226 struct work_struct runqueue_work;
227 struct exynos_drm_subdrv subdrv;
228 bool suspended;
229
230 /* cmdlist */
231 struct g2d_cmdlist_node *cmdlist_node;
232 struct list_head free_cmdlist;
233 struct mutex cmdlist_mutex;
234 dma_addr_t cmdlist_pool;
235 void *cmdlist_pool_virt;
236 struct dma_attrs cmdlist_dma_attrs;
237
238 /* runqueue*/
239 struct g2d_runqueue_node *runqueue_node;
240 struct list_head runqueue;
241 struct mutex runqueue_mutex;
242 struct kmem_cache *runqueue_slab;
243
244 unsigned long current_pool;
245 unsigned long max_pool;
246 };
247
248 static int g2d_init_cmdlist(struct g2d_data *g2d)
249 {
250 struct device *dev = g2d->dev;
251 struct g2d_cmdlist_node *node = g2d->cmdlist_node;
252 struct exynos_drm_subdrv *subdrv = &g2d->subdrv;
253 int nr;
254 int ret;
255 struct g2d_buf_info *buf_info;
256
257 init_dma_attrs(&g2d->cmdlist_dma_attrs);
258 dma_set_attr(DMA_ATTR_WRITE_COMBINE, &g2d->cmdlist_dma_attrs);
259
260 g2d->cmdlist_pool_virt = dma_alloc_attrs(subdrv->drm_dev->dev,
261 G2D_CMDLIST_POOL_SIZE,
262 &g2d->cmdlist_pool, GFP_KERNEL,
263 &g2d->cmdlist_dma_attrs);
264 if (!g2d->cmdlist_pool_virt) {
265 dev_err(dev, "failed to allocate dma memory\n");
266 return -ENOMEM;
267 }
268
269 node = kcalloc(G2D_CMDLIST_NUM, sizeof(*node), GFP_KERNEL);
270 if (!node) {
271 dev_err(dev, "failed to allocate memory\n");
272 ret = -ENOMEM;
273 goto err;
274 }
275
276 for (nr = 0; nr < G2D_CMDLIST_NUM; nr++) {
277 unsigned int i;
278
279 node[nr].cmdlist =
280 g2d->cmdlist_pool_virt + nr * G2D_CMDLIST_SIZE;
281 node[nr].dma_addr =
282 g2d->cmdlist_pool + nr * G2D_CMDLIST_SIZE;
283
284 buf_info = &node[nr].buf_info;
285 for (i = 0; i < MAX_REG_TYPE_NR; i++)
286 buf_info->reg_types[i] = REG_TYPE_NONE;
287
288 list_add_tail(&node[nr].list, &g2d->free_cmdlist);
289 }
290
291 return 0;
292
293 err:
294 dma_free_attrs(subdrv->drm_dev->dev, G2D_CMDLIST_POOL_SIZE,
295 g2d->cmdlist_pool_virt,
296 g2d->cmdlist_pool, &g2d->cmdlist_dma_attrs);
297 return ret;
298 }
299
300 static void g2d_fini_cmdlist(struct g2d_data *g2d)
301 {
302 struct exynos_drm_subdrv *subdrv = &g2d->subdrv;
303
304 kfree(g2d->cmdlist_node);
305 dma_free_attrs(subdrv->drm_dev->dev, G2D_CMDLIST_POOL_SIZE,
306 g2d->cmdlist_pool_virt,
307 g2d->cmdlist_pool, &g2d->cmdlist_dma_attrs);
308 }
309
310 static struct g2d_cmdlist_node *g2d_get_cmdlist(struct g2d_data *g2d)
311 {
312 struct device *dev = g2d->dev;
313 struct g2d_cmdlist_node *node;
314
315 mutex_lock(&g2d->cmdlist_mutex);
316 if (list_empty(&g2d->free_cmdlist)) {
317 dev_err(dev, "there is no free cmdlist\n");
318 mutex_unlock(&g2d->cmdlist_mutex);
319 return NULL;
320 }
321
322 node = list_first_entry(&g2d->free_cmdlist, struct g2d_cmdlist_node,
323 list);
324 list_del_init(&node->list);
325 mutex_unlock(&g2d->cmdlist_mutex);
326
327 return node;
328 }
329
330 static void g2d_put_cmdlist(struct g2d_data *g2d, struct g2d_cmdlist_node *node)
331 {
332 mutex_lock(&g2d->cmdlist_mutex);
333 list_move_tail(&node->list, &g2d->free_cmdlist);
334 mutex_unlock(&g2d->cmdlist_mutex);
335 }
336
337 static void g2d_add_cmdlist_to_inuse(struct exynos_drm_g2d_private *g2d_priv,
338 struct g2d_cmdlist_node *node)
339 {
340 struct g2d_cmdlist_node *lnode;
341
342 if (list_empty(&g2d_priv->inuse_cmdlist))
343 goto add_to_list;
344
345 /* this links to base address of new cmdlist */
346 lnode = list_entry(g2d_priv->inuse_cmdlist.prev,
347 struct g2d_cmdlist_node, list);
348 lnode->cmdlist->data[lnode->cmdlist->last] = node->dma_addr;
349
350 add_to_list:
351 list_add_tail(&node->list, &g2d_priv->inuse_cmdlist);
352
353 if (node->event)
354 list_add_tail(&node->event->base.link, &g2d_priv->event_list);
355 }
356
357 static void g2d_userptr_put_dma_addr(struct drm_device *drm_dev,
358 unsigned long obj,
359 bool force)
360 {
361 struct g2d_cmdlist_userptr *g2d_userptr =
362 (struct g2d_cmdlist_userptr *)obj;
363
364 if (!obj)
365 return;
366
367 if (force)
368 goto out;
369
370 atomic_dec(&g2d_userptr->refcount);
371
372 if (atomic_read(&g2d_userptr->refcount) > 0)
373 return;
374
375 if (g2d_userptr->in_pool)
376 return;
377
378 out:
379 exynos_gem_unmap_sgt_from_dma(drm_dev, g2d_userptr->sgt,
380 DMA_BIDIRECTIONAL);
381
382 exynos_gem_put_pages_to_userptr(g2d_userptr->pages,
383 g2d_userptr->npages,
384 g2d_userptr->vma);
385
386 if (!g2d_userptr->out_of_list)
387 list_del_init(&g2d_userptr->list);
388
389 sg_free_table(g2d_userptr->sgt);
390 kfree(g2d_userptr->sgt);
391
392 drm_free_large(g2d_userptr->pages);
393 kfree(g2d_userptr);
394 }
395
396 static dma_addr_t *g2d_userptr_get_dma_addr(struct drm_device *drm_dev,
397 unsigned long userptr,
398 unsigned long size,
399 struct drm_file *filp,
400 unsigned long *obj)
401 {
402 struct drm_exynos_file_private *file_priv = filp->driver_priv;
403 struct exynos_drm_g2d_private *g2d_priv = file_priv->g2d_priv;
404 struct g2d_cmdlist_userptr *g2d_userptr;
405 struct g2d_data *g2d;
406 struct page **pages;
407 struct sg_table *sgt;
408 struct vm_area_struct *vma;
409 unsigned long start, end;
410 unsigned int npages, offset;
411 int ret;
412
413 if (!size) {
414 DRM_ERROR("invalid userptr size.\n");
415 return ERR_PTR(-EINVAL);
416 }
417
418 g2d = dev_get_drvdata(g2d_priv->dev);
419
420 /* check if userptr already exists in userptr_list. */
421 list_for_each_entry(g2d_userptr, &g2d_priv->userptr_list, list) {
422 if (g2d_userptr->userptr == userptr) {
423 /*
424 * also check size because there could be same address
425 * and different size.
426 */
427 if (g2d_userptr->size == size) {
428 atomic_inc(&g2d_userptr->refcount);
429 *obj = (unsigned long)g2d_userptr;
430
431 return &g2d_userptr->dma_addr;
432 }
433
434 /*
435 * at this moment, maybe g2d dma is accessing this
436 * g2d_userptr memory region so just remove this
437 * g2d_userptr object from userptr_list not to be
438 * referred again and also except it the userptr
439 * pool to be released after the dma access completion.
440 */
441 g2d_userptr->out_of_list = true;
442 g2d_userptr->in_pool = false;
443 list_del_init(&g2d_userptr->list);
444
445 break;
446 }
447 }
448
449 g2d_userptr = kzalloc(sizeof(*g2d_userptr), GFP_KERNEL);
450 if (!g2d_userptr) {
451 DRM_ERROR("failed to allocate g2d_userptr.\n");
452 return ERR_PTR(-ENOMEM);
453 }
454
455 atomic_set(&g2d_userptr->refcount, 1);
456
457 start = userptr & PAGE_MASK;
458 offset = userptr & ~PAGE_MASK;
459 end = PAGE_ALIGN(userptr + size);
460 npages = (end - start) >> PAGE_SHIFT;
461 g2d_userptr->npages = npages;
462
463 pages = drm_calloc_large(npages, sizeof(struct page *));
464 if (!pages) {
465 DRM_ERROR("failed to allocate pages.\n");
466 ret = -ENOMEM;
467 goto err_free;
468 }
469
470 vma = find_vma(current->mm, userptr);
471 if (!vma) {
472 DRM_ERROR("failed to get vm region.\n");
473 ret = -EFAULT;
474 goto err_free_pages;
475 }
476
477 if (vma->vm_end < userptr + size) {
478 DRM_ERROR("vma is too small.\n");
479 ret = -EFAULT;
480 goto err_free_pages;
481 }
482
483 g2d_userptr->vma = exynos_gem_get_vma(vma);
484 if (!g2d_userptr->vma) {
485 DRM_ERROR("failed to copy vma.\n");
486 ret = -ENOMEM;
487 goto err_free_pages;
488 }
489
490 g2d_userptr->size = size;
491
492 ret = exynos_gem_get_pages_from_userptr(start & PAGE_MASK,
493 npages, pages, vma);
494 if (ret < 0) {
495 DRM_ERROR("failed to get user pages from userptr.\n");
496 goto err_put_vma;
497 }
498
499 g2d_userptr->pages = pages;
500
501 sgt = kzalloc(sizeof(*sgt), GFP_KERNEL);
502 if (!sgt) {
503 DRM_ERROR("failed to allocate sg table.\n");
504 ret = -ENOMEM;
505 goto err_free_userptr;
506 }
507
508 ret = sg_alloc_table_from_pages(sgt, pages, npages, offset,
509 size, GFP_KERNEL);
510 if (ret < 0) {
511 DRM_ERROR("failed to get sgt from pages.\n");
512 goto err_free_sgt;
513 }
514
515 g2d_userptr->sgt = sgt;
516
517 ret = exynos_gem_map_sgt_with_dma(drm_dev, g2d_userptr->sgt,
518 DMA_BIDIRECTIONAL);
519 if (ret < 0) {
520 DRM_ERROR("failed to map sgt with dma region.\n");
521 goto err_sg_free_table;
522 }
523
524 g2d_userptr->dma_addr = sgt->sgl[0].dma_address;
525 g2d_userptr->userptr = userptr;
526
527 list_add_tail(&g2d_userptr->list, &g2d_priv->userptr_list);
528
529 if (g2d->current_pool + (npages << PAGE_SHIFT) < g2d->max_pool) {
530 g2d->current_pool += npages << PAGE_SHIFT;
531 g2d_userptr->in_pool = true;
532 }
533
534 *obj = (unsigned long)g2d_userptr;
535
536 return &g2d_userptr->dma_addr;
537
538 err_sg_free_table:
539 sg_free_table(sgt);
540
541 err_free_sgt:
542 kfree(sgt);
543
544 err_free_userptr:
545 exynos_gem_put_pages_to_userptr(g2d_userptr->pages,
546 g2d_userptr->npages,
547 g2d_userptr->vma);
548
549 err_put_vma:
550 exynos_gem_put_vma(g2d_userptr->vma);
551
552 err_free_pages:
553 drm_free_large(pages);
554
555 err_free:
556 kfree(g2d_userptr);
557
558 return ERR_PTR(ret);
559 }
560
561 static void g2d_userptr_free_all(struct drm_device *drm_dev,
562 struct g2d_data *g2d,
563 struct drm_file *filp)
564 {
565 struct drm_exynos_file_private *file_priv = filp->driver_priv;
566 struct exynos_drm_g2d_private *g2d_priv = file_priv->g2d_priv;
567 struct g2d_cmdlist_userptr *g2d_userptr, *n;
568
569 list_for_each_entry_safe(g2d_userptr, n, &g2d_priv->userptr_list, list)
570 if (g2d_userptr->in_pool)
571 g2d_userptr_put_dma_addr(drm_dev,
572 (unsigned long)g2d_userptr,
573 true);
574
575 g2d->current_pool = 0;
576 }
577
578 static enum g2d_reg_type g2d_get_reg_type(int reg_offset)
579 {
580 enum g2d_reg_type reg_type;
581
582 switch (reg_offset) {
583 case G2D_SRC_BASE_ADDR:
584 case G2D_SRC_COLOR_MODE:
585 case G2D_SRC_LEFT_TOP:
586 case G2D_SRC_RIGHT_BOTTOM:
587 reg_type = REG_TYPE_SRC;
588 break;
589 case G2D_SRC_PLANE2_BASE_ADDR:
590 reg_type = REG_TYPE_SRC_PLANE2;
591 break;
592 case G2D_DST_BASE_ADDR:
593 case G2D_DST_COLOR_MODE:
594 case G2D_DST_LEFT_TOP:
595 case G2D_DST_RIGHT_BOTTOM:
596 reg_type = REG_TYPE_DST;
597 break;
598 case G2D_DST_PLANE2_BASE_ADDR:
599 reg_type = REG_TYPE_DST_PLANE2;
600 break;
601 case G2D_PAT_BASE_ADDR:
602 reg_type = REG_TYPE_PAT;
603 break;
604 case G2D_MSK_BASE_ADDR:
605 reg_type = REG_TYPE_MSK;
606 break;
607 default:
608 reg_type = REG_TYPE_NONE;
609 DRM_ERROR("Unknown register offset![%d]\n", reg_offset);
610 break;
611 };
612
613 return reg_type;
614 }
615
616 static unsigned long g2d_get_buf_bpp(unsigned int format)
617 {
618 unsigned long bpp;
619
620 switch (format) {
621 case G2D_FMT_XRGB8888:
622 case G2D_FMT_ARGB8888:
623 bpp = 4;
624 break;
625 case G2D_FMT_RGB565:
626 case G2D_FMT_XRGB1555:
627 case G2D_FMT_ARGB1555:
628 case G2D_FMT_XRGB4444:
629 case G2D_FMT_ARGB4444:
630 bpp = 2;
631 break;
632 case G2D_FMT_PACKED_RGB888:
633 bpp = 3;
634 break;
635 default:
636 bpp = 1;
637 break;
638 }
639
640 return bpp;
641 }
642
643 static bool g2d_check_buf_desc_is_valid(struct g2d_buf_desc *buf_desc,
644 enum g2d_reg_type reg_type,
645 unsigned long size)
646 {
647 unsigned int width, height;
648 unsigned long area;
649
650 /*
651 * check source and destination buffers only.
652 * so the others are always valid.
653 */
654 if (reg_type != REG_TYPE_SRC && reg_type != REG_TYPE_DST)
655 return true;
656
657 width = buf_desc->right_x - buf_desc->left_x;
658 if (width < G2D_LEN_MIN || width > G2D_LEN_MAX) {
659 DRM_ERROR("width[%u] is out of range!\n", width);
660 return false;
661 }
662
663 height = buf_desc->bottom_y - buf_desc->top_y;
664 if (height < G2D_LEN_MIN || height > G2D_LEN_MAX) {
665 DRM_ERROR("height[%u] is out of range!\n", height);
666 return false;
667 }
668
669 area = (unsigned long)width * (unsigned long)height *
670 g2d_get_buf_bpp(buf_desc->format);
671 if (area > size) {
672 DRM_ERROR("area[%lu] is out of range[%lu]!\n", area, size);
673 return false;
674 }
675
676 return true;
677 }
678
679 static int g2d_map_cmdlist_gem(struct g2d_data *g2d,
680 struct g2d_cmdlist_node *node,
681 struct drm_device *drm_dev,
682 struct drm_file *file)
683 {
684 struct g2d_cmdlist *cmdlist = node->cmdlist;
685 struct g2d_buf_info *buf_info = &node->buf_info;
686 int offset;
687 int ret;
688 int i;
689
690 for (i = 0; i < buf_info->map_nr; i++) {
691 struct g2d_buf_desc *buf_desc;
692 enum g2d_reg_type reg_type;
693 int reg_pos;
694 unsigned long handle;
695 dma_addr_t *addr;
696
697 reg_pos = cmdlist->last - 2 * (i + 1);
698
699 offset = cmdlist->data[reg_pos];
700 handle = cmdlist->data[reg_pos + 1];
701
702 reg_type = g2d_get_reg_type(offset);
703 if (reg_type == REG_TYPE_NONE) {
704 ret = -EFAULT;
705 goto err;
706 }
707
708 buf_desc = &buf_info->descs[reg_type];
709
710 if (buf_info->types[reg_type] == BUF_TYPE_GEM) {
711 unsigned long size;
712
713 size = exynos_drm_gem_get_size(drm_dev, handle, file);
714 if (!size) {
715 ret = -EFAULT;
716 goto err;
717 }
718
719 if (!g2d_check_buf_desc_is_valid(buf_desc, reg_type,
720 size)) {
721 ret = -EFAULT;
722 goto err;
723 }
724
725 addr = exynos_drm_gem_get_dma_addr(drm_dev, handle,
726 file);
727 if (IS_ERR(addr)) {
728 ret = -EFAULT;
729 goto err;
730 }
731 } else {
732 struct drm_exynos_g2d_userptr g2d_userptr;
733
734 if (copy_from_user(&g2d_userptr, (void __user *)handle,
735 sizeof(struct drm_exynos_g2d_userptr))) {
736 ret = -EFAULT;
737 goto err;
738 }
739
740 if (!g2d_check_buf_desc_is_valid(buf_desc, reg_type,
741 g2d_userptr.size)) {
742 ret = -EFAULT;
743 goto err;
744 }
745
746 addr = g2d_userptr_get_dma_addr(drm_dev,
747 g2d_userptr.userptr,
748 g2d_userptr.size,
749 file,
750 &handle);
751 if (IS_ERR(addr)) {
752 ret = -EFAULT;
753 goto err;
754 }
755 }
756
757 cmdlist->data[reg_pos + 1] = *addr;
758 buf_info->reg_types[i] = reg_type;
759 buf_info->handles[reg_type] = handle;
760 }
761
762 return 0;
763
764 err:
765 buf_info->map_nr = i;
766 return ret;
767 }
768
769 static void g2d_unmap_cmdlist_gem(struct g2d_data *g2d,
770 struct g2d_cmdlist_node *node,
771 struct drm_file *filp)
772 {
773 struct exynos_drm_subdrv *subdrv = &g2d->subdrv;
774 struct g2d_buf_info *buf_info = &node->buf_info;
775 int i;
776
777 for (i = 0; i < buf_info->map_nr; i++) {
778 struct g2d_buf_desc *buf_desc;
779 enum g2d_reg_type reg_type;
780 unsigned long handle;
781
782 reg_type = buf_info->reg_types[i];
783
784 buf_desc = &buf_info->descs[reg_type];
785 handle = buf_info->handles[reg_type];
786
787 if (buf_info->types[reg_type] == BUF_TYPE_GEM)
788 exynos_drm_gem_put_dma_addr(subdrv->drm_dev, handle,
789 filp);
790 else
791 g2d_userptr_put_dma_addr(subdrv->drm_dev, handle,
792 false);
793
794 buf_info->reg_types[i] = REG_TYPE_NONE;
795 buf_info->handles[reg_type] = 0;
796 buf_info->types[reg_type] = 0;
797 memset(buf_desc, 0x00, sizeof(*buf_desc));
798 }
799
800 buf_info->map_nr = 0;
801 }
802
803 static void g2d_dma_start(struct g2d_data *g2d,
804 struct g2d_runqueue_node *runqueue_node)
805 {
806 struct g2d_cmdlist_node *node =
807 list_first_entry(&runqueue_node->run_cmdlist,
808 struct g2d_cmdlist_node, list);
809
810 pm_runtime_get_sync(g2d->dev);
811 clk_enable(g2d->gate_clk);
812
813 writel_relaxed(node->dma_addr, g2d->regs + G2D_DMA_SFR_BASE_ADDR);
814 writel_relaxed(G2D_DMA_START, g2d->regs + G2D_DMA_COMMAND);
815 }
816
817 static struct g2d_runqueue_node *g2d_get_runqueue_node(struct g2d_data *g2d)
818 {
819 struct g2d_runqueue_node *runqueue_node;
820
821 if (list_empty(&g2d->runqueue))
822 return NULL;
823
824 runqueue_node = list_first_entry(&g2d->runqueue,
825 struct g2d_runqueue_node, list);
826 list_del_init(&runqueue_node->list);
827 return runqueue_node;
828 }
829
830 static void g2d_free_runqueue_node(struct g2d_data *g2d,
831 struct g2d_runqueue_node *runqueue_node)
832 {
833 struct g2d_cmdlist_node *node;
834
835 if (!runqueue_node)
836 return;
837
838 mutex_lock(&g2d->cmdlist_mutex);
839 /*
840 * commands in run_cmdlist have been completed so unmap all gem
841 * objects in each command node so that they are unreferenced.
842 */
843 list_for_each_entry(node, &runqueue_node->run_cmdlist, list)
844 g2d_unmap_cmdlist_gem(g2d, node, runqueue_node->filp);
845 list_splice_tail_init(&runqueue_node->run_cmdlist, &g2d->free_cmdlist);
846 mutex_unlock(&g2d->cmdlist_mutex);
847
848 kmem_cache_free(g2d->runqueue_slab, runqueue_node);
849 }
850
851 static void g2d_exec_runqueue(struct g2d_data *g2d)
852 {
853 g2d->runqueue_node = g2d_get_runqueue_node(g2d);
854 if (g2d->runqueue_node)
855 g2d_dma_start(g2d, g2d->runqueue_node);
856 }
857
858 static void g2d_runqueue_worker(struct work_struct *work)
859 {
860 struct g2d_data *g2d = container_of(work, struct g2d_data,
861 runqueue_work);
862
863 mutex_lock(&g2d->runqueue_mutex);
864 clk_disable(g2d->gate_clk);
865 pm_runtime_put_sync(g2d->dev);
866
867 complete(&g2d->runqueue_node->complete);
868 if (g2d->runqueue_node->async)
869 g2d_free_runqueue_node(g2d, g2d->runqueue_node);
870
871 if (g2d->suspended)
872 g2d->runqueue_node = NULL;
873 else
874 g2d_exec_runqueue(g2d);
875 mutex_unlock(&g2d->runqueue_mutex);
876 }
877
878 static void g2d_finish_event(struct g2d_data *g2d, u32 cmdlist_no)
879 {
880 struct drm_device *drm_dev = g2d->subdrv.drm_dev;
881 struct g2d_runqueue_node *runqueue_node = g2d->runqueue_node;
882 struct drm_exynos_pending_g2d_event *e;
883 struct timeval now;
884 unsigned long flags;
885
886 if (list_empty(&runqueue_node->event_list))
887 return;
888
889 e = list_first_entry(&runqueue_node->event_list,
890 struct drm_exynos_pending_g2d_event, base.link);
891
892 do_gettimeofday(&now);
893 e->event.tv_sec = now.tv_sec;
894 e->event.tv_usec = now.tv_usec;
895 e->event.cmdlist_no = cmdlist_no;
896
897 spin_lock_irqsave(&drm_dev->event_lock, flags);
898 list_move_tail(&e->base.link, &e->base.file_priv->event_list);
899 wake_up_interruptible(&e->base.file_priv->event_wait);
900 spin_unlock_irqrestore(&drm_dev->event_lock, flags);
901 }
902
903 static irqreturn_t g2d_irq_handler(int irq, void *dev_id)
904 {
905 struct g2d_data *g2d = dev_id;
906 u32 pending;
907
908 pending = readl_relaxed(g2d->regs + G2D_INTC_PEND);
909 if (pending)
910 writel_relaxed(pending, g2d->regs + G2D_INTC_PEND);
911
912 if (pending & G2D_INTP_GCMD_FIN) {
913 u32 cmdlist_no = readl_relaxed(g2d->regs + G2D_DMA_STATUS);
914
915 cmdlist_no = (cmdlist_no & G2D_DMA_LIST_DONE_COUNT) >>
916 G2D_DMA_LIST_DONE_COUNT_OFFSET;
917
918 g2d_finish_event(g2d, cmdlist_no);
919
920 writel_relaxed(0, g2d->regs + G2D_DMA_HOLD_CMD);
921 if (!(pending & G2D_INTP_ACMD_FIN)) {
922 writel_relaxed(G2D_DMA_CONTINUE,
923 g2d->regs + G2D_DMA_COMMAND);
924 }
925 }
926
927 if (pending & G2D_INTP_ACMD_FIN)
928 queue_work(g2d->g2d_workq, &g2d->runqueue_work);
929
930 return IRQ_HANDLED;
931 }
932
933 static int g2d_check_reg_offset(struct device *dev,
934 struct g2d_cmdlist_node *node,
935 int nr, bool for_addr)
936 {
937 struct g2d_cmdlist *cmdlist = node->cmdlist;
938 int reg_offset;
939 int index;
940 int i;
941
942 for (i = 0; i < nr; i++) {
943 struct g2d_buf_info *buf_info = &node->buf_info;
944 struct g2d_buf_desc *buf_desc;
945 enum g2d_reg_type reg_type;
946 unsigned long value;
947
948 index = cmdlist->last - 2 * (i + 1);
949
950 reg_offset = cmdlist->data[index] & ~0xfffff000;
951 if (reg_offset < G2D_VALID_START || reg_offset > G2D_VALID_END)
952 goto err;
953 if (reg_offset % 4)
954 goto err;
955
956 switch (reg_offset) {
957 case G2D_SRC_BASE_ADDR:
958 case G2D_SRC_PLANE2_BASE_ADDR:
959 case G2D_DST_BASE_ADDR:
960 case G2D_DST_PLANE2_BASE_ADDR:
961 case G2D_PAT_BASE_ADDR:
962 case G2D_MSK_BASE_ADDR:
963 if (!for_addr)
964 goto err;
965
966 reg_type = g2d_get_reg_type(reg_offset);
967 if (reg_type == REG_TYPE_NONE)
968 goto err;
969
970 /* check userptr buffer type. */
971 if ((cmdlist->data[index] & ~0x7fffffff) >> 31) {
972 buf_info->types[reg_type] = BUF_TYPE_USERPTR;
973 cmdlist->data[index] &= ~G2D_BUF_USERPTR;
974 } else
975 buf_info->types[reg_type] = BUF_TYPE_GEM;
976 break;
977 case G2D_SRC_COLOR_MODE:
978 case G2D_DST_COLOR_MODE:
979 if (for_addr)
980 goto err;
981
982 reg_type = g2d_get_reg_type(reg_offset);
983 if (reg_type == REG_TYPE_NONE)
984 goto err;
985
986 buf_desc = &buf_info->descs[reg_type];
987 value = cmdlist->data[index + 1];
988
989 buf_desc->format = value & 0xf;
990 break;
991 case G2D_SRC_LEFT_TOP:
992 case G2D_DST_LEFT_TOP:
993 if (for_addr)
994 goto err;
995
996 reg_type = g2d_get_reg_type(reg_offset);
997 if (reg_type == REG_TYPE_NONE)
998 goto err;
999
1000 buf_desc = &buf_info->descs[reg_type];
1001 value = cmdlist->data[index + 1];
1002
1003 buf_desc->left_x = value & 0x1fff;
1004 buf_desc->top_y = (value & 0x1fff0000) >> 16;
1005 break;
1006 case G2D_SRC_RIGHT_BOTTOM:
1007 case G2D_DST_RIGHT_BOTTOM:
1008 if (for_addr)
1009 goto err;
1010
1011 reg_type = g2d_get_reg_type(reg_offset);
1012 if (reg_type == REG_TYPE_NONE)
1013 goto err;
1014
1015 buf_desc = &buf_info->descs[reg_type];
1016 value = cmdlist->data[index + 1];
1017
1018 buf_desc->right_x = value & 0x1fff;
1019 buf_desc->bottom_y = (value & 0x1fff0000) >> 16;
1020 break;
1021 default:
1022 if (for_addr)
1023 goto err;
1024 break;
1025 }
1026 }
1027
1028 return 0;
1029
1030 err:
1031 dev_err(dev, "Bad register offset: 0x%lx\n", cmdlist->data[index]);
1032 return -EINVAL;
1033 }
1034
1035 /* ioctl functions */
1036 int exynos_g2d_get_ver_ioctl(struct drm_device *drm_dev, void *data,
1037 struct drm_file *file)
1038 {
1039 struct drm_exynos_g2d_get_ver *ver = data;
1040
1041 ver->major = G2D_HW_MAJOR_VER;
1042 ver->minor = G2D_HW_MINOR_VER;
1043
1044 return 0;
1045 }
1046 EXPORT_SYMBOL_GPL(exynos_g2d_get_ver_ioctl);
1047
1048 int exynos_g2d_set_cmdlist_ioctl(struct drm_device *drm_dev, void *data,
1049 struct drm_file *file)
1050 {
1051 struct drm_exynos_file_private *file_priv = file->driver_priv;
1052 struct exynos_drm_g2d_private *g2d_priv = file_priv->g2d_priv;
1053 struct device *dev = g2d_priv->dev;
1054 struct g2d_data *g2d;
1055 struct drm_exynos_g2d_set_cmdlist *req = data;
1056 struct drm_exynos_g2d_cmd *cmd;
1057 struct drm_exynos_pending_g2d_event *e;
1058 struct g2d_cmdlist_node *node;
1059 struct g2d_cmdlist *cmdlist;
1060 unsigned long flags;
1061 int size;
1062 int ret;
1063
1064 if (!dev)
1065 return -ENODEV;
1066
1067 g2d = dev_get_drvdata(dev);
1068 if (!g2d)
1069 return -EFAULT;
1070
1071 node = g2d_get_cmdlist(g2d);
1072 if (!node)
1073 return -ENOMEM;
1074
1075 node->event = NULL;
1076
1077 if (req->event_type != G2D_EVENT_NOT) {
1078 spin_lock_irqsave(&drm_dev->event_lock, flags);
1079 if (file->event_space < sizeof(e->event)) {
1080 spin_unlock_irqrestore(&drm_dev->event_lock, flags);
1081 ret = -ENOMEM;
1082 goto err;
1083 }
1084 file->event_space -= sizeof(e->event);
1085 spin_unlock_irqrestore(&drm_dev->event_lock, flags);
1086
1087 e = kzalloc(sizeof(*node->event), GFP_KERNEL);
1088 if (!e) {
1089 dev_err(dev, "failed to allocate event\n");
1090
1091 spin_lock_irqsave(&drm_dev->event_lock, flags);
1092 file->event_space += sizeof(e->event);
1093 spin_unlock_irqrestore(&drm_dev->event_lock, flags);
1094
1095 ret = -ENOMEM;
1096 goto err;
1097 }
1098
1099 e->event.base.type = DRM_EXYNOS_G2D_EVENT;
1100 e->event.base.length = sizeof(e->event);
1101 e->event.user_data = req->user_data;
1102 e->base.event = &e->event.base;
1103 e->base.file_priv = file;
1104 e->base.destroy = (void (*) (struct drm_pending_event *)) kfree;
1105
1106 node->event = e;
1107 }
1108
1109 cmdlist = node->cmdlist;
1110
1111 cmdlist->last = 0;
1112
1113 /*
1114 * If don't clear SFR registers, the cmdlist is affected by register
1115 * values of previous cmdlist. G2D hw executes SFR clear command and
1116 * a next command at the same time then the next command is ignored and
1117 * is executed rightly from next next command, so needs a dummy command
1118 * to next command of SFR clear command.
1119 */
1120 cmdlist->data[cmdlist->last++] = G2D_SOFT_RESET;
1121 cmdlist->data[cmdlist->last++] = G2D_SFRCLEAR;
1122 cmdlist->data[cmdlist->last++] = G2D_SRC_BASE_ADDR;
1123 cmdlist->data[cmdlist->last++] = 0;
1124
1125 /*
1126 * 'LIST_HOLD' command should be set to the DMA_HOLD_CMD_REG
1127 * and GCF bit should be set to INTEN register if user wants
1128 * G2D interrupt event once current command list execution is
1129 * finished.
1130 * Otherwise only ACF bit should be set to INTEN register so
1131 * that one interrupt is occured after all command lists
1132 * have been completed.
1133 */
1134 if (node->event) {
1135 cmdlist->data[cmdlist->last++] = G2D_INTEN;
1136 cmdlist->data[cmdlist->last++] = G2D_INTEN_ACF | G2D_INTEN_GCF;
1137 cmdlist->data[cmdlist->last++] = G2D_DMA_HOLD_CMD;
1138 cmdlist->data[cmdlist->last++] = G2D_LIST_HOLD;
1139 } else {
1140 cmdlist->data[cmdlist->last++] = G2D_INTEN;
1141 cmdlist->data[cmdlist->last++] = G2D_INTEN_ACF;
1142 }
1143
1144 /* Check size of cmdlist: last 2 is about G2D_BITBLT_START */
1145 size = cmdlist->last + req->cmd_nr * 2 + req->cmd_buf_nr * 2 + 2;
1146 if (size > G2D_CMDLIST_DATA_NUM) {
1147 dev_err(dev, "cmdlist size is too big\n");
1148 ret = -EINVAL;
1149 goto err_free_event;
1150 }
1151
1152 cmd = (struct drm_exynos_g2d_cmd *)(uint32_t)req->cmd;
1153
1154 if (copy_from_user(cmdlist->data + cmdlist->last,
1155 (void __user *)cmd,
1156 sizeof(*cmd) * req->cmd_nr)) {
1157 ret = -EFAULT;
1158 goto err_free_event;
1159 }
1160 cmdlist->last += req->cmd_nr * 2;
1161
1162 ret = g2d_check_reg_offset(dev, node, req->cmd_nr, false);
1163 if (ret < 0)
1164 goto err_free_event;
1165
1166 node->buf_info.map_nr = req->cmd_buf_nr;
1167 if (req->cmd_buf_nr) {
1168 struct drm_exynos_g2d_cmd *cmd_buf;
1169
1170 cmd_buf = (struct drm_exynos_g2d_cmd *)(uint32_t)req->cmd_buf;
1171
1172 if (copy_from_user(cmdlist->data + cmdlist->last,
1173 (void __user *)cmd_buf,
1174 sizeof(*cmd_buf) * req->cmd_buf_nr)) {
1175 ret = -EFAULT;
1176 goto err_free_event;
1177 }
1178 cmdlist->last += req->cmd_buf_nr * 2;
1179
1180 ret = g2d_check_reg_offset(dev, node, req->cmd_buf_nr, true);
1181 if (ret < 0)
1182 goto err_free_event;
1183
1184 ret = g2d_map_cmdlist_gem(g2d, node, drm_dev, file);
1185 if (ret < 0)
1186 goto err_unmap;
1187 }
1188
1189 cmdlist->data[cmdlist->last++] = G2D_BITBLT_START;
1190 cmdlist->data[cmdlist->last++] = G2D_START_BITBLT;
1191
1192 /* head */
1193 cmdlist->head = cmdlist->last / 2;
1194
1195 /* tail */
1196 cmdlist->data[cmdlist->last] = 0;
1197
1198 g2d_add_cmdlist_to_inuse(g2d_priv, node);
1199
1200 return 0;
1201
1202 err_unmap:
1203 g2d_unmap_cmdlist_gem(g2d, node, file);
1204 err_free_event:
1205 if (node->event) {
1206 spin_lock_irqsave(&drm_dev->event_lock, flags);
1207 file->event_space += sizeof(e->event);
1208 spin_unlock_irqrestore(&drm_dev->event_lock, flags);
1209 kfree(node->event);
1210 }
1211 err:
1212 g2d_put_cmdlist(g2d, node);
1213 return ret;
1214 }
1215 EXPORT_SYMBOL_GPL(exynos_g2d_set_cmdlist_ioctl);
1216
1217 int exynos_g2d_exec_ioctl(struct drm_device *drm_dev, void *data,
1218 struct drm_file *file)
1219 {
1220 struct drm_exynos_file_private *file_priv = file->driver_priv;
1221 struct exynos_drm_g2d_private *g2d_priv = file_priv->g2d_priv;
1222 struct device *dev = g2d_priv->dev;
1223 struct g2d_data *g2d;
1224 struct drm_exynos_g2d_exec *req = data;
1225 struct g2d_runqueue_node *runqueue_node;
1226 struct list_head *run_cmdlist;
1227 struct list_head *event_list;
1228
1229 if (!dev)
1230 return -ENODEV;
1231
1232 g2d = dev_get_drvdata(dev);
1233 if (!g2d)
1234 return -EFAULT;
1235
1236 runqueue_node = kmem_cache_alloc(g2d->runqueue_slab, GFP_KERNEL);
1237 if (!runqueue_node) {
1238 dev_err(dev, "failed to allocate memory\n");
1239 return -ENOMEM;
1240 }
1241 run_cmdlist = &runqueue_node->run_cmdlist;
1242 event_list = &runqueue_node->event_list;
1243 INIT_LIST_HEAD(run_cmdlist);
1244 INIT_LIST_HEAD(event_list);
1245 init_completion(&runqueue_node->complete);
1246 runqueue_node->async = req->async;
1247
1248 list_splice_init(&g2d_priv->inuse_cmdlist, run_cmdlist);
1249 list_splice_init(&g2d_priv->event_list, event_list);
1250
1251 if (list_empty(run_cmdlist)) {
1252 dev_err(dev, "there is no inuse cmdlist\n");
1253 kmem_cache_free(g2d->runqueue_slab, runqueue_node);
1254 return -EPERM;
1255 }
1256
1257 mutex_lock(&g2d->runqueue_mutex);
1258 runqueue_node->pid = current->pid;
1259 runqueue_node->filp = file;
1260 list_add_tail(&runqueue_node->list, &g2d->runqueue);
1261 if (!g2d->runqueue_node)
1262 g2d_exec_runqueue(g2d);
1263 mutex_unlock(&g2d->runqueue_mutex);
1264
1265 if (runqueue_node->async)
1266 goto out;
1267
1268 wait_for_completion(&runqueue_node->complete);
1269 g2d_free_runqueue_node(g2d, runqueue_node);
1270
1271 out:
1272 return 0;
1273 }
1274 EXPORT_SYMBOL_GPL(exynos_g2d_exec_ioctl);
1275
1276 static int g2d_subdrv_probe(struct drm_device *drm_dev, struct device *dev)
1277 {
1278 struct g2d_data *g2d;
1279 int ret;
1280
1281 g2d = dev_get_drvdata(dev);
1282 if (!g2d)
1283 return -EFAULT;
1284
1285 /* allocate dma-aware cmdlist buffer. */
1286 ret = g2d_init_cmdlist(g2d);
1287 if (ret < 0) {
1288 dev_err(dev, "cmdlist init failed\n");
1289 return ret;
1290 }
1291
1292 if (!is_drm_iommu_supported(drm_dev))
1293 return 0;
1294
1295 ret = drm_iommu_attach_device(drm_dev, dev);
1296 if (ret < 0) {
1297 dev_err(dev, "failed to enable iommu.\n");
1298 g2d_fini_cmdlist(g2d);
1299 }
1300
1301 return ret;
1302
1303 }
1304
1305 static void g2d_subdrv_remove(struct drm_device *drm_dev, struct device *dev)
1306 {
1307 if (!is_drm_iommu_supported(drm_dev))
1308 return;
1309
1310 drm_iommu_detach_device(drm_dev, dev);
1311 }
1312
1313 static int g2d_open(struct drm_device *drm_dev, struct device *dev,
1314 struct drm_file *file)
1315 {
1316 struct drm_exynos_file_private *file_priv = file->driver_priv;
1317 struct exynos_drm_g2d_private *g2d_priv;
1318
1319 g2d_priv = kzalloc(sizeof(*g2d_priv), GFP_KERNEL);
1320 if (!g2d_priv) {
1321 dev_err(dev, "failed to allocate g2d private data\n");
1322 return -ENOMEM;
1323 }
1324
1325 g2d_priv->dev = dev;
1326 file_priv->g2d_priv = g2d_priv;
1327
1328 INIT_LIST_HEAD(&g2d_priv->inuse_cmdlist);
1329 INIT_LIST_HEAD(&g2d_priv->event_list);
1330 INIT_LIST_HEAD(&g2d_priv->userptr_list);
1331
1332 return 0;
1333 }
1334
1335 static void g2d_close(struct drm_device *drm_dev, struct device *dev,
1336 struct drm_file *file)
1337 {
1338 struct drm_exynos_file_private *file_priv = file->driver_priv;
1339 struct exynos_drm_g2d_private *g2d_priv = file_priv->g2d_priv;
1340 struct g2d_data *g2d;
1341 struct g2d_cmdlist_node *node, *n;
1342
1343 if (!dev)
1344 return;
1345
1346 g2d = dev_get_drvdata(dev);
1347 if (!g2d)
1348 return;
1349
1350 mutex_lock(&g2d->cmdlist_mutex);
1351 list_for_each_entry_safe(node, n, &g2d_priv->inuse_cmdlist, list) {
1352 /*
1353 * unmap all gem objects not completed.
1354 *
1355 * P.S. if current process was terminated forcely then
1356 * there may be some commands in inuse_cmdlist so unmap
1357 * them.
1358 */
1359 g2d_unmap_cmdlist_gem(g2d, node, file);
1360 list_move_tail(&node->list, &g2d->free_cmdlist);
1361 }
1362 mutex_unlock(&g2d->cmdlist_mutex);
1363
1364 /* release all g2d_userptr in pool. */
1365 g2d_userptr_free_all(drm_dev, g2d, file);
1366
1367 kfree(file_priv->g2d_priv);
1368 }
1369
1370 static int g2d_probe(struct platform_device *pdev)
1371 {
1372 struct device *dev = &pdev->dev;
1373 struct resource *res;
1374 struct g2d_data *g2d;
1375 struct exynos_drm_subdrv *subdrv;
1376 int ret;
1377
1378 g2d = devm_kzalloc(dev, sizeof(*g2d), GFP_KERNEL);
1379 if (!g2d) {
1380 dev_err(dev, "failed to allocate driver data\n");
1381 return -ENOMEM;
1382 }
1383
1384 g2d->runqueue_slab = kmem_cache_create("g2d_runqueue_slab",
1385 sizeof(struct g2d_runqueue_node), 0, 0, NULL);
1386 if (!g2d->runqueue_slab)
1387 return -ENOMEM;
1388
1389 g2d->dev = dev;
1390
1391 g2d->g2d_workq = create_singlethread_workqueue("g2d");
1392 if (!g2d->g2d_workq) {
1393 dev_err(dev, "failed to create workqueue\n");
1394 ret = -EINVAL;
1395 goto err_destroy_slab;
1396 }
1397
1398 INIT_WORK(&g2d->runqueue_work, g2d_runqueue_worker);
1399 INIT_LIST_HEAD(&g2d->free_cmdlist);
1400 INIT_LIST_HEAD(&g2d->runqueue);
1401
1402 mutex_init(&g2d->cmdlist_mutex);
1403 mutex_init(&g2d->runqueue_mutex);
1404
1405 g2d->gate_clk = devm_clk_get(dev, "fimg2d");
1406 if (IS_ERR(g2d->gate_clk)) {
1407 dev_err(dev, "failed to get gate clock\n");
1408 ret = PTR_ERR(g2d->gate_clk);
1409 goto err_destroy_workqueue;
1410 }
1411
1412 pm_runtime_enable(dev);
1413
1414 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1415
1416 g2d->regs = devm_ioremap_resource(dev, res);
1417 if (IS_ERR(g2d->regs)) {
1418 ret = PTR_ERR(g2d->regs);
1419 goto err_put_clk;
1420 }
1421
1422 g2d->irq = platform_get_irq(pdev, 0);
1423 if (g2d->irq < 0) {
1424 dev_err(dev, "failed to get irq\n");
1425 ret = g2d->irq;
1426 goto err_put_clk;
1427 }
1428
1429 ret = devm_request_irq(dev, g2d->irq, g2d_irq_handler, 0,
1430 "drm_g2d", g2d);
1431 if (ret < 0) {
1432 dev_err(dev, "irq request failed\n");
1433 goto err_put_clk;
1434 }
1435
1436 g2d->max_pool = MAX_POOL;
1437
1438 platform_set_drvdata(pdev, g2d);
1439
1440 subdrv = &g2d->subdrv;
1441 subdrv->dev = dev;
1442 subdrv->probe = g2d_subdrv_probe;
1443 subdrv->remove = g2d_subdrv_remove;
1444 subdrv->open = g2d_open;
1445 subdrv->close = g2d_close;
1446
1447 ret = exynos_drm_subdrv_register(subdrv);
1448 if (ret < 0) {
1449 dev_err(dev, "failed to register drm g2d device\n");
1450 goto err_put_clk;
1451 }
1452
1453 dev_info(dev, "The exynos g2d(ver %d.%d) successfully probed\n",
1454 G2D_HW_MAJOR_VER, G2D_HW_MINOR_VER);
1455
1456 return 0;
1457
1458 err_put_clk:
1459 pm_runtime_disable(dev);
1460 err_destroy_workqueue:
1461 destroy_workqueue(g2d->g2d_workq);
1462 err_destroy_slab:
1463 kmem_cache_destroy(g2d->runqueue_slab);
1464 return ret;
1465 }
1466
1467 static int g2d_remove(struct platform_device *pdev)
1468 {
1469 struct g2d_data *g2d = platform_get_drvdata(pdev);
1470
1471 cancel_work_sync(&g2d->runqueue_work);
1472 exynos_drm_subdrv_unregister(&g2d->subdrv);
1473
1474 while (g2d->runqueue_node) {
1475 g2d_free_runqueue_node(g2d, g2d->runqueue_node);
1476 g2d->runqueue_node = g2d_get_runqueue_node(g2d);
1477 }
1478
1479 pm_runtime_disable(&pdev->dev);
1480
1481 g2d_fini_cmdlist(g2d);
1482 destroy_workqueue(g2d->g2d_workq);
1483 kmem_cache_destroy(g2d->runqueue_slab);
1484
1485 return 0;
1486 }
1487
1488 #ifdef CONFIG_PM_SLEEP
1489 static int g2d_suspend(struct device *dev)
1490 {
1491 struct g2d_data *g2d = dev_get_drvdata(dev);
1492
1493 mutex_lock(&g2d->runqueue_mutex);
1494 g2d->suspended = true;
1495 mutex_unlock(&g2d->runqueue_mutex);
1496
1497 while (g2d->runqueue_node)
1498 /* FIXME: good range? */
1499 usleep_range(500, 1000);
1500
1501 flush_work(&g2d->runqueue_work);
1502
1503 return 0;
1504 }
1505
1506 static int g2d_resume(struct device *dev)
1507 {
1508 struct g2d_data *g2d = dev_get_drvdata(dev);
1509
1510 g2d->suspended = false;
1511 g2d_exec_runqueue(g2d);
1512
1513 return 0;
1514 }
1515 #endif
1516
1517 static SIMPLE_DEV_PM_OPS(g2d_pm_ops, g2d_suspend, g2d_resume);
1518
1519 #ifdef CONFIG_OF
1520 static const struct of_device_id exynos_g2d_match[] = {
1521 { .compatible = "samsung,exynos5250-g2d" },
1522 {},
1523 };
1524 MODULE_DEVICE_TABLE(of, exynos_g2d_match);
1525 #endif
1526
1527 struct platform_driver g2d_driver = {
1528 .probe = g2d_probe,
1529 .remove = g2d_remove,
1530 .driver = {
1531 .name = "s5p-g2d",
1532 .owner = THIS_MODULE,
1533 .pm = &g2d_pm_ops,
1534 .of_match_table = of_match_ptr(exynos_g2d_match),
1535 },
1536 };
Linux kernel - Deliverables
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