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10#include <linux/kernel.h>
11#include <linux/clk.h>
12#include <linux/err.h>
13#include <linux/interrupt.h>
14#include <linux/io.h>
15#include <linux/platform_device.h>
16#include <linux/pm_runtime.h>
17#include <linux/slab.h>
18#include <linux/workqueue.h>
19#include <linux/dma-mapping.h>
20#include <linux/dma-attrs.h>
21#include <linux/of.h>
22
23#include <drm/drmP.h>
24#include <drm/exynos_drm.h>
25#include "exynos_drm_drv.h"
26#include "exynos_drm_gem.h"
27#include "exynos_drm_iommu.h"
28
29#define G2D_HW_MAJOR_VER 4
30#define G2D_HW_MINOR_VER 1
31
32
33#define G2D_VALID_START 0x0104
34#define G2D_VALID_END 0x0880
35
36
37#define G2D_SOFT_RESET 0x0000
38#define G2D_INTEN 0x0004
39#define G2D_INTC_PEND 0x000C
40#define G2D_DMA_SFR_BASE_ADDR 0x0080
41#define G2D_DMA_COMMAND 0x0084
42#define G2D_DMA_STATUS 0x008C
43#define G2D_DMA_HOLD_CMD 0x0090
44
45
46#define G2D_BITBLT_START 0x0100
47
48
49#define G2D_SRC_BASE_ADDR 0x0304
50#define G2D_SRC_COLOR_MODE 0x030C
51#define G2D_SRC_LEFT_TOP 0x0310
52#define G2D_SRC_RIGHT_BOTTOM 0x0314
53#define G2D_SRC_PLANE2_BASE_ADDR 0x0318
54#define G2D_DST_BASE_ADDR 0x0404
55#define G2D_DST_COLOR_MODE 0x040C
56#define G2D_DST_LEFT_TOP 0x0410
57#define G2D_DST_RIGHT_BOTTOM 0x0414
58#define G2D_DST_PLANE2_BASE_ADDR 0x0418
59#define G2D_PAT_BASE_ADDR 0x0500
60#define G2D_MSK_BASE_ADDR 0x0520
61
62
63#define G2D_SFRCLEAR (1 << 1)
64#define G2D_R (1 << 0)
65
66
67#define G2D_INTEN_ACF (1 << 3)
68#define G2D_INTEN_UCF (1 << 2)
69#define G2D_INTEN_GCF (1 << 1)
70#define G2D_INTEN_SCF (1 << 0)
71
72
73#define G2D_INTP_ACMD_FIN (1 << 3)
74#define G2D_INTP_UCMD_FIN (1 << 2)
75#define G2D_INTP_GCMD_FIN (1 << 1)
76#define G2D_INTP_SCMD_FIN (1 << 0)
77
78
79#define G2D_DMA_HALT (1 << 2)
80#define G2D_DMA_CONTINUE (1 << 1)
81#define G2D_DMA_START (1 << 0)
82
83
84#define G2D_DMA_LIST_DONE_COUNT (0xFF << 17)
85#define G2D_DMA_BITBLT_DONE_COUNT (0xFFFF << 1)
86#define G2D_DMA_DONE (1 << 0)
87#define G2D_DMA_LIST_DONE_COUNT_OFFSET 17
88
89
90#define G2D_USER_HOLD (1 << 2)
91#define G2D_LIST_HOLD (1 << 1)
92#define G2D_BITBLT_HOLD (1 << 0)
93
94
95#define G2D_START_CASESEL (1 << 2)
96#define G2D_START_NHOLT (1 << 1)
97#define G2D_START_BITBLT (1 << 0)
98
99
100#define G2D_FMT_XRGB8888 0
101#define G2D_FMT_ARGB8888 1
102#define G2D_FMT_RGB565 2
103#define G2D_FMT_XRGB1555 3
104#define G2D_FMT_ARGB1555 4
105#define G2D_FMT_XRGB4444 5
106#define G2D_FMT_ARGB4444 6
107#define G2D_FMT_PACKED_RGB888 7
108#define G2D_FMT_A8 11
109#define G2D_FMT_L8 12
110
111
112#define G2D_LEN_MIN 1
113#define G2D_LEN_MAX 8000
114
115#define G2D_CMDLIST_SIZE (PAGE_SIZE / 4)
116#define G2D_CMDLIST_NUM 64
117#define G2D_CMDLIST_POOL_SIZE (G2D_CMDLIST_SIZE * G2D_CMDLIST_NUM)
118#define G2D_CMDLIST_DATA_NUM (G2D_CMDLIST_SIZE / sizeof(u32) - 2)
119
120
121#define MAX_POOL (64 * 1024 * 1024)
122
123enum {
124 BUF_TYPE_GEM = 1,
125 BUF_TYPE_USERPTR,
126};
127
128enum g2d_reg_type {
129 REG_TYPE_NONE = -1,
130 REG_TYPE_SRC,
131 REG_TYPE_SRC_PLANE2,
132 REG_TYPE_DST,
133 REG_TYPE_DST_PLANE2,
134 REG_TYPE_PAT,
135 REG_TYPE_MSK,
136 MAX_REG_TYPE_NR
137};
138
139
140struct g2d_cmdlist {
141 u32 head;
142 unsigned long data[G2D_CMDLIST_DATA_NUM];
143 u32 last;
144};
145
146
147
148
149
150
151
152
153
154
155
156struct g2d_buf_desc {
157 unsigned int format;
158 unsigned int left_x;
159 unsigned int top_y;
160 unsigned int right_x;
161 unsigned int bottom_y;
162};
163
164
165
166
167
168
169
170
171
172
173
174struct g2d_buf_info {
175 unsigned int map_nr;
176 enum g2d_reg_type reg_types[MAX_REG_TYPE_NR];
177 unsigned long handles[MAX_REG_TYPE_NR];
178 unsigned int types[MAX_REG_TYPE_NR];
179 struct g2d_buf_desc descs[MAX_REG_TYPE_NR];
180};
181
182struct drm_exynos_pending_g2d_event {
183 struct drm_pending_event base;
184 struct drm_exynos_g2d_event event;
185};
186
187struct g2d_cmdlist_userptr {
188 struct list_head list;
189 dma_addr_t dma_addr;
190 unsigned long userptr;
191 unsigned long size;
192 struct page **pages;
193 unsigned int npages;
194 struct sg_table *sgt;
195 struct vm_area_struct *vma;
196 atomic_t refcount;
197 bool in_pool;
198 bool out_of_list;
199};
200struct g2d_cmdlist_node {
201 struct list_head list;
202 struct g2d_cmdlist *cmdlist;
203 dma_addr_t dma_addr;
204 struct g2d_buf_info buf_info;
205
206 struct drm_exynos_pending_g2d_event *event;
207};
208
209struct g2d_runqueue_node {
210 struct list_head list;
211 struct list_head run_cmdlist;
212 struct list_head event_list;
213 struct drm_file *filp;
214 pid_t pid;
215 struct completion complete;
216 int async;
217};
218
219struct g2d_data {
220 struct device *dev;
221 struct clk *gate_clk;
222 void __iomem *regs;
223 int irq;
224 struct workqueue_struct *g2d_workq;
225 struct work_struct runqueue_work;
226 struct exynos_drm_subdrv subdrv;
227 bool suspended;
228
229
230 struct g2d_cmdlist_node *cmdlist_node;
231 struct list_head free_cmdlist;
232 struct mutex cmdlist_mutex;
233 dma_addr_t cmdlist_pool;
234 void *cmdlist_pool_virt;
235 struct dma_attrs cmdlist_dma_attrs;
236
237
238 struct g2d_runqueue_node *runqueue_node;
239 struct list_head runqueue;
240 struct mutex runqueue_mutex;
241 struct kmem_cache *runqueue_slab;
242
243 unsigned long current_pool;
244 unsigned long max_pool;
245};
246
247static int g2d_init_cmdlist(struct g2d_data *g2d)
248{
249 struct device *dev = g2d->dev;
250 struct g2d_cmdlist_node *node = g2d->cmdlist_node;
251 struct exynos_drm_subdrv *subdrv = &g2d->subdrv;
252 int nr;
253 int ret;
254 struct g2d_buf_info *buf_info;
255
256 init_dma_attrs(&g2d->cmdlist_dma_attrs);
257 dma_set_attr(DMA_ATTR_WRITE_COMBINE, &g2d->cmdlist_dma_attrs);
258
259 g2d->cmdlist_pool_virt = dma_alloc_attrs(subdrv->drm_dev->dev,
260 G2D_CMDLIST_POOL_SIZE,
261 &g2d->cmdlist_pool, GFP_KERNEL,
262 &g2d->cmdlist_dma_attrs);
263 if (!g2d->cmdlist_pool_virt) {
264 dev_err(dev, "failed to allocate dma memory\n");
265 return -ENOMEM;
266 }
267
268 node = kcalloc(G2D_CMDLIST_NUM, sizeof(*node), GFP_KERNEL);
269 if (!node) {
270 dev_err(dev, "failed to allocate memory\n");
271 ret = -ENOMEM;
272 goto err;
273 }
274
275 for (nr = 0; nr < G2D_CMDLIST_NUM; nr++) {
276 unsigned int i;
277
278 node[nr].cmdlist =
279 g2d->cmdlist_pool_virt + nr * G2D_CMDLIST_SIZE;
280 node[nr].dma_addr =
281 g2d->cmdlist_pool + nr * G2D_CMDLIST_SIZE;
282
283 buf_info = &node[nr].buf_info;
284 for (i = 0; i < MAX_REG_TYPE_NR; i++)
285 buf_info->reg_types[i] = REG_TYPE_NONE;
286
287 list_add_tail(&node[nr].list, &g2d->free_cmdlist);
288 }
289
290 return 0;
291
292err:
293 dma_free_attrs(subdrv->drm_dev->dev, G2D_CMDLIST_POOL_SIZE,
294 g2d->cmdlist_pool_virt,
295 g2d->cmdlist_pool, &g2d->cmdlist_dma_attrs);
296 return ret;
297}
298
299static void g2d_fini_cmdlist(struct g2d_data *g2d)
300{
301 struct exynos_drm_subdrv *subdrv = &g2d->subdrv;
302
303 kfree(g2d->cmdlist_node);
304 dma_free_attrs(subdrv->drm_dev->dev, G2D_CMDLIST_POOL_SIZE,
305 g2d->cmdlist_pool_virt,
306 g2d->cmdlist_pool, &g2d->cmdlist_dma_attrs);
307}
308
309static struct g2d_cmdlist_node *g2d_get_cmdlist(struct g2d_data *g2d)
310{
311 struct device *dev = g2d->dev;
312 struct g2d_cmdlist_node *node;
313
314 mutex_lock(&g2d->cmdlist_mutex);
315 if (list_empty(&g2d->free_cmdlist)) {
316 dev_err(dev, "there is no free cmdlist\n");
317 mutex_unlock(&g2d->cmdlist_mutex);
318 return NULL;
319 }
320
321 node = list_first_entry(&g2d->free_cmdlist, struct g2d_cmdlist_node,
322 list);
323 list_del_init(&node->list);
324 mutex_unlock(&g2d->cmdlist_mutex);
325
326 return node;
327}
328
329static void g2d_put_cmdlist(struct g2d_data *g2d, struct g2d_cmdlist_node *node)
330{
331 mutex_lock(&g2d->cmdlist_mutex);
332 list_move_tail(&node->list, &g2d->free_cmdlist);
333 mutex_unlock(&g2d->cmdlist_mutex);
334}
335
336static void g2d_add_cmdlist_to_inuse(struct exynos_drm_g2d_private *g2d_priv,
337 struct g2d_cmdlist_node *node)
338{
339 struct g2d_cmdlist_node *lnode;
340
341 if (list_empty(&g2d_priv->inuse_cmdlist))
342 goto add_to_list;
343
344
345 lnode = list_entry(g2d_priv->inuse_cmdlist.prev,
346 struct g2d_cmdlist_node, list);
347 lnode->cmdlist->data[lnode->cmdlist->last] = node->dma_addr;
348
349add_to_list:
350 list_add_tail(&node->list, &g2d_priv->inuse_cmdlist);
351
352 if (node->event)
353 list_add_tail(&node->event->base.link, &g2d_priv->event_list);
354}
355
356static void g2d_userptr_put_dma_addr(struct drm_device *drm_dev,
357 unsigned long obj,
358 bool force)
359{
360 struct g2d_cmdlist_userptr *g2d_userptr =
361 (struct g2d_cmdlist_userptr *)obj;
362
363 if (!obj)
364 return;
365
366 if (force)
367 goto out;
368
369 atomic_dec(&g2d_userptr->refcount);
370
371 if (atomic_read(&g2d_userptr->refcount) > 0)
372 return;
373
374 if (g2d_userptr->in_pool)
375 return;
376
377out:
378 exynos_gem_unmap_sgt_from_dma(drm_dev, g2d_userptr->sgt,
379 DMA_BIDIRECTIONAL);
380
381 exynos_gem_put_pages_to_userptr(g2d_userptr->pages,
382 g2d_userptr->npages,
383 g2d_userptr->vma);
384
385 if (!g2d_userptr->out_of_list)
386 list_del_init(&g2d_userptr->list);
387
388 sg_free_table(g2d_userptr->sgt);
389 kfree(g2d_userptr->sgt);
390
391 drm_free_large(g2d_userptr->pages);
392 kfree(g2d_userptr);
393}
394
395static dma_addr_t *g2d_userptr_get_dma_addr(struct drm_device *drm_dev,
396 unsigned long userptr,
397 unsigned long size,
398 struct drm_file *filp,
399 unsigned long *obj)
400{
401 struct drm_exynos_file_private *file_priv = filp->driver_priv;
402 struct exynos_drm_g2d_private *g2d_priv = file_priv->g2d_priv;
403 struct g2d_cmdlist_userptr *g2d_userptr;
404 struct g2d_data *g2d;
405 struct page **pages;
406 struct sg_table *sgt;
407 struct vm_area_struct *vma;
408 unsigned long start, end;
409 unsigned int npages, offset;
410 int ret;
411
412 if (!size) {
413 DRM_ERROR("invalid userptr size.\n");
414 return ERR_PTR(-EINVAL);
415 }
416
417 g2d = dev_get_drvdata(g2d_priv->dev);
418
419
420 list_for_each_entry(g2d_userptr, &g2d_priv->userptr_list, list) {
421 if (g2d_userptr->userptr == userptr) {
422
423
424
425
426 if (g2d_userptr->size == size) {
427 atomic_inc(&g2d_userptr->refcount);
428 *obj = (unsigned long)g2d_userptr;
429
430 return &g2d_userptr->dma_addr;
431 }
432
433
434
435
436
437
438
439
440 g2d_userptr->out_of_list = true;
441 g2d_userptr->in_pool = false;
442 list_del_init(&g2d_userptr->list);
443
444 break;
445 }
446 }
447
448 g2d_userptr = kzalloc(sizeof(*g2d_userptr), GFP_KERNEL);
449 if (!g2d_userptr) {
450 DRM_ERROR("failed to allocate g2d_userptr.\n");
451 return ERR_PTR(-ENOMEM);
452 }
453
454 atomic_set(&g2d_userptr->refcount, 1);
455
456 start = userptr & PAGE_MASK;
457 offset = userptr & ~PAGE_MASK;
458 end = PAGE_ALIGN(userptr + size);
459 npages = (end - start) >> PAGE_SHIFT;
460 g2d_userptr->npages = npages;
461
462 pages = drm_calloc_large(npages, sizeof(struct page *));
463 if (!pages) {
464 DRM_ERROR("failed to allocate pages.\n");
465 ret = -ENOMEM;
466 goto err_free;
467 }
468
469 vma = find_vma(current->mm, userptr);
470 if (!vma) {
471 DRM_ERROR("failed to get vm region.\n");
472 ret = -EFAULT;
473 goto err_free_pages;
474 }
475
476 if (vma->vm_end < userptr + size) {
477 DRM_ERROR("vma is too small.\n");
478 ret = -EFAULT;
479 goto err_free_pages;
480 }
481
482 g2d_userptr->vma = exynos_gem_get_vma(vma);
483 if (!g2d_userptr->vma) {
484 DRM_ERROR("failed to copy vma.\n");
485 ret = -ENOMEM;
486 goto err_free_pages;
487 }
488
489 g2d_userptr->size = size;
490
491 ret = exynos_gem_get_pages_from_userptr(start & PAGE_MASK,
492 npages, pages, vma);
493 if (ret < 0) {
494 DRM_ERROR("failed to get user pages from userptr.\n");
495 goto err_put_vma;
496 }
497
498 g2d_userptr->pages = pages;
499
500 sgt = kzalloc(sizeof(*sgt), GFP_KERNEL);
501 if (!sgt) {
502 DRM_ERROR("failed to allocate sg table.\n");
503 ret = -ENOMEM;
504 goto err_free_userptr;
505 }
506
507 ret = sg_alloc_table_from_pages(sgt, pages, npages, offset,
508 size, GFP_KERNEL);
509 if (ret < 0) {
510 DRM_ERROR("failed to get sgt from pages.\n");
511 goto err_free_sgt;
512 }
513
514 g2d_userptr->sgt = sgt;
515
516 ret = exynos_gem_map_sgt_with_dma(drm_dev, g2d_userptr->sgt,
517 DMA_BIDIRECTIONAL);
518 if (ret < 0) {
519 DRM_ERROR("failed to map sgt with dma region.\n");
520 goto err_sg_free_table;
521 }
522
523 g2d_userptr->dma_addr = sgt->sgl[0].dma_address;
524 g2d_userptr->userptr = userptr;
525
526 list_add_tail(&g2d_userptr->list, &g2d_priv->userptr_list);
527
528 if (g2d->current_pool + (npages << PAGE_SHIFT) < g2d->max_pool) {
529 g2d->current_pool += npages << PAGE_SHIFT;
530 g2d_userptr->in_pool = true;
531 }
532
533 *obj = (unsigned long)g2d_userptr;
534
535 return &g2d_userptr->dma_addr;
536
537err_sg_free_table:
538 sg_free_table(sgt);
539
540err_free_sgt:
541 kfree(sgt);
542
543err_free_userptr:
544 exynos_gem_put_pages_to_userptr(g2d_userptr->pages,
545 g2d_userptr->npages,
546 g2d_userptr->vma);
547
548err_put_vma:
549 exynos_gem_put_vma(g2d_userptr->vma);
550
551err_free_pages:
552 drm_free_large(pages);
553
554err_free:
555 kfree(g2d_userptr);
556
557 return ERR_PTR(ret);
558}
559
560static void g2d_userptr_free_all(struct drm_device *drm_dev,
561 struct g2d_data *g2d,
562 struct drm_file *filp)
563{
564 struct drm_exynos_file_private *file_priv = filp->driver_priv;
565 struct exynos_drm_g2d_private *g2d_priv = file_priv->g2d_priv;
566 struct g2d_cmdlist_userptr *g2d_userptr, *n;
567
568 list_for_each_entry_safe(g2d_userptr, n, &g2d_priv->userptr_list, list)
569 if (g2d_userptr->in_pool)
570 g2d_userptr_put_dma_addr(drm_dev,
571 (unsigned long)g2d_userptr,
572 true);
573
574 g2d->current_pool = 0;
575}
576
577static enum g2d_reg_type g2d_get_reg_type(int reg_offset)
578{
579 enum g2d_reg_type reg_type;
580
581 switch (reg_offset) {
582 case G2D_SRC_BASE_ADDR:
583 case G2D_SRC_COLOR_MODE:
584 case G2D_SRC_LEFT_TOP:
585 case G2D_SRC_RIGHT_BOTTOM:
586 reg_type = REG_TYPE_SRC;
587 break;
588 case G2D_SRC_PLANE2_BASE_ADDR:
589 reg_type = REG_TYPE_SRC_PLANE2;
590 break;
591 case G2D_DST_BASE_ADDR:
592 case G2D_DST_COLOR_MODE:
593 case G2D_DST_LEFT_TOP:
594 case G2D_DST_RIGHT_BOTTOM:
595 reg_type = REG_TYPE_DST;
596 break;
597 case G2D_DST_PLANE2_BASE_ADDR:
598 reg_type = REG_TYPE_DST_PLANE2;
599 break;
600 case G2D_PAT_BASE_ADDR:
601 reg_type = REG_TYPE_PAT;
602 break;
603 case G2D_MSK_BASE_ADDR:
604 reg_type = REG_TYPE_MSK;
605 break;
606 default:
607 reg_type = REG_TYPE_NONE;
608 DRM_ERROR("Unknown register offset![%d]\n", reg_offset);
609 break;
610 };
611
612 return reg_type;
613}
614
615static unsigned long g2d_get_buf_bpp(unsigned int format)
616{
617 unsigned long bpp;
618
619 switch (format) {
620 case G2D_FMT_XRGB8888:
621 case G2D_FMT_ARGB8888:
622 bpp = 4;
623 break;
624 case G2D_FMT_RGB565:
625 case G2D_FMT_XRGB1555:
626 case G2D_FMT_ARGB1555:
627 case G2D_FMT_XRGB4444:
628 case G2D_FMT_ARGB4444:
629 bpp = 2;
630 break;
631 case G2D_FMT_PACKED_RGB888:
632 bpp = 3;
633 break;
634 default:
635 bpp = 1;
636 break;
637 }
638
639 return bpp;
640}
641
642static bool g2d_check_buf_desc_is_valid(struct g2d_buf_desc *buf_desc,
643 enum g2d_reg_type reg_type,
644 unsigned long size)
645{
646 unsigned int width, height;
647 unsigned long area;
648
649
650
651
652
653 if (reg_type != REG_TYPE_SRC && reg_type != REG_TYPE_DST)
654 return true;
655
656 width = buf_desc->right_x - buf_desc->left_x;
657 if (width < G2D_LEN_MIN || width > G2D_LEN_MAX) {
658 DRM_ERROR("width[%u] is out of range!\n", width);
659 return false;
660 }
661
662 height = buf_desc->bottom_y - buf_desc->top_y;
663 if (height < G2D_LEN_MIN || height > G2D_LEN_MAX) {
664 DRM_ERROR("height[%u] is out of range!\n", height);
665 return false;
666 }
667
668 area = (unsigned long)width * (unsigned long)height *
669 g2d_get_buf_bpp(buf_desc->format);
670 if (area > size) {
671 DRM_ERROR("area[%lu] is out of range[%lu]!\n", area, size);
672 return false;
673 }
674
675 return true;
676}
677
678static int g2d_map_cmdlist_gem(struct g2d_data *g2d,
679 struct g2d_cmdlist_node *node,
680 struct drm_device *drm_dev,
681 struct drm_file *file)
682{
683 struct g2d_cmdlist *cmdlist = node->cmdlist;
684 struct g2d_buf_info *buf_info = &node->buf_info;
685 int offset;
686 int ret;
687 int i;
688
689 for (i = 0; i < buf_info->map_nr; i++) {
690 struct g2d_buf_desc *buf_desc;
691 enum g2d_reg_type reg_type;
692 int reg_pos;
693 unsigned long handle;
694 dma_addr_t *addr;
695
696 reg_pos = cmdlist->last - 2 * (i + 1);
697
698 offset = cmdlist->data[reg_pos];
699 handle = cmdlist->data[reg_pos + 1];
700
701 reg_type = g2d_get_reg_type(offset);
702 if (reg_type == REG_TYPE_NONE) {
703 ret = -EFAULT;
704 goto err;
705 }
706
707 buf_desc = &buf_info->descs[reg_type];
708
709 if (buf_info->types[reg_type] == BUF_TYPE_GEM) {
710 unsigned long size;
711
712 size = exynos_drm_gem_get_size(drm_dev, handle, file);
713 if (!size) {
714 ret = -EFAULT;
715 goto err;
716 }
717
718 if (!g2d_check_buf_desc_is_valid(buf_desc, reg_type,
719 size)) {
720 ret = -EFAULT;
721 goto err;
722 }
723
724 addr = exynos_drm_gem_get_dma_addr(drm_dev, handle,
725 file);
726 if (IS_ERR(addr)) {
727 ret = -EFAULT;
728 goto err;
729 }
730 } else {
731 struct drm_exynos_g2d_userptr g2d_userptr;
732
733 if (copy_from_user(&g2d_userptr, (void __user *)handle,
734 sizeof(struct drm_exynos_g2d_userptr))) {
735 ret = -EFAULT;
736 goto err;
737 }
738
739 if (!g2d_check_buf_desc_is_valid(buf_desc, reg_type,
740 g2d_userptr.size)) {
741 ret = -EFAULT;
742 goto err;
743 }
744
745 addr = g2d_userptr_get_dma_addr(drm_dev,
746 g2d_userptr.userptr,
747 g2d_userptr.size,
748 file,
749 &handle);
750 if (IS_ERR(addr)) {
751 ret = -EFAULT;
752 goto err;
753 }
754 }
755
756 cmdlist->data[reg_pos + 1] = *addr;
757 buf_info->reg_types[i] = reg_type;
758 buf_info->handles[reg_type] = handle;
759 }
760
761 return 0;
762
763err:
764 buf_info->map_nr = i;
765 return ret;
766}
767
768static void g2d_unmap_cmdlist_gem(struct g2d_data *g2d,
769 struct g2d_cmdlist_node *node,
770 struct drm_file *filp)
771{
772 struct exynos_drm_subdrv *subdrv = &g2d->subdrv;
773 struct g2d_buf_info *buf_info = &node->buf_info;
774 int i;
775
776 for (i = 0; i < buf_info->map_nr; i++) {
777 struct g2d_buf_desc *buf_desc;
778 enum g2d_reg_type reg_type;
779 unsigned long handle;
780
781 reg_type = buf_info->reg_types[i];
782
783 buf_desc = &buf_info->descs[reg_type];
784 handle = buf_info->handles[reg_type];
785
786 if (buf_info->types[reg_type] == BUF_TYPE_GEM)
787 exynos_drm_gem_put_dma_addr(subdrv->drm_dev, handle,
788 filp);
789 else
790 g2d_userptr_put_dma_addr(subdrv->drm_dev, handle,
791 false);
792
793 buf_info->reg_types[i] = REG_TYPE_NONE;
794 buf_info->handles[reg_type] = 0;
795 buf_info->types[reg_type] = 0;
796 memset(buf_desc, 0x00, sizeof(*buf_desc));
797 }
798
799 buf_info->map_nr = 0;
800}
801
802static void g2d_dma_start(struct g2d_data *g2d,
803 struct g2d_runqueue_node *runqueue_node)
804{
805 struct g2d_cmdlist_node *node =
806 list_first_entry(&runqueue_node->run_cmdlist,
807 struct g2d_cmdlist_node, list);
808 int ret;
809
810 ret = pm_runtime_get_sync(g2d->dev);
811 if (ret < 0) {
812 dev_warn(g2d->dev, "failed pm power on.\n");
813 return;
814 }
815
816 ret = clk_prepare_enable(g2d->gate_clk);
817 if (ret < 0) {
818 dev_warn(g2d->dev, "failed to enable clock.\n");
819 pm_runtime_put_sync(g2d->dev);
820 return;
821 }
822
823 writel_relaxed(node->dma_addr, g2d->regs + G2D_DMA_SFR_BASE_ADDR);
824 writel_relaxed(G2D_DMA_START, g2d->regs + G2D_DMA_COMMAND);
825}
826
827static struct g2d_runqueue_node *g2d_get_runqueue_node(struct g2d_data *g2d)
828{
829 struct g2d_runqueue_node *runqueue_node;
830
831 if (list_empty(&g2d->runqueue))
832 return NULL;
833
834 runqueue_node = list_first_entry(&g2d->runqueue,
835 struct g2d_runqueue_node, list);
836 list_del_init(&runqueue_node->list);
837 return runqueue_node;
838}
839
840static void g2d_free_runqueue_node(struct g2d_data *g2d,
841 struct g2d_runqueue_node *runqueue_node)
842{
843 struct g2d_cmdlist_node *node;
844
845 if (!runqueue_node)
846 return;
847
848 mutex_lock(&g2d->cmdlist_mutex);
849
850
851
852
853 list_for_each_entry(node, &runqueue_node->run_cmdlist, list)
854 g2d_unmap_cmdlist_gem(g2d, node, runqueue_node->filp);
855 list_splice_tail_init(&runqueue_node->run_cmdlist, &g2d->free_cmdlist);
856 mutex_unlock(&g2d->cmdlist_mutex);
857
858 kmem_cache_free(g2d->runqueue_slab, runqueue_node);
859}
860
861static void g2d_exec_runqueue(struct g2d_data *g2d)
862{
863 g2d->runqueue_node = g2d_get_runqueue_node(g2d);
864 if (g2d->runqueue_node)
865 g2d_dma_start(g2d, g2d->runqueue_node);
866}
867
868static void g2d_runqueue_worker(struct work_struct *work)
869{
870 struct g2d_data *g2d = container_of(work, struct g2d_data,
871 runqueue_work);
872
873 mutex_lock(&g2d->runqueue_mutex);
874 clk_disable_unprepare(g2d->gate_clk);
875 pm_runtime_put_sync(g2d->dev);
876
877 complete(&g2d->runqueue_node->complete);
878 if (g2d->runqueue_node->async)
879 g2d_free_runqueue_node(g2d, g2d->runqueue_node);
880
881 if (g2d->suspended)
882 g2d->runqueue_node = NULL;
883 else
884 g2d_exec_runqueue(g2d);
885 mutex_unlock(&g2d->runqueue_mutex);
886}
887
888static void g2d_finish_event(struct g2d_data *g2d, u32 cmdlist_no)
889{
890 struct drm_device *drm_dev = g2d->subdrv.drm_dev;
891 struct g2d_runqueue_node *runqueue_node = g2d->runqueue_node;
892 struct drm_exynos_pending_g2d_event *e;
893 struct timeval now;
894 unsigned long flags;
895
896 if (list_empty(&runqueue_node->event_list))
897 return;
898
899 e = list_first_entry(&runqueue_node->event_list,
900 struct drm_exynos_pending_g2d_event, base.link);
901
902 do_gettimeofday(&now);
903 e->event.tv_sec = now.tv_sec;
904 e->event.tv_usec = now.tv_usec;
905 e->event.cmdlist_no = cmdlist_no;
906
907 spin_lock_irqsave(&drm_dev->event_lock, flags);
908 list_move_tail(&e->base.link, &e->base.file_priv->event_list);
909 wake_up_interruptible(&e->base.file_priv->event_wait);
910 spin_unlock_irqrestore(&drm_dev->event_lock, flags);
911}
912
913static irqreturn_t g2d_irq_handler(int irq, void *dev_id)
914{
915 struct g2d_data *g2d = dev_id;
916 u32 pending;
917
918 pending = readl_relaxed(g2d->regs + G2D_INTC_PEND);
919 if (pending)
920 writel_relaxed(pending, g2d->regs + G2D_INTC_PEND);
921
922 if (pending & G2D_INTP_GCMD_FIN) {
923 u32 cmdlist_no = readl_relaxed(g2d->regs + G2D_DMA_STATUS);
924
925 cmdlist_no = (cmdlist_no & G2D_DMA_LIST_DONE_COUNT) >>
926 G2D_DMA_LIST_DONE_COUNT_OFFSET;
927
928 g2d_finish_event(g2d, cmdlist_no);
929
930 writel_relaxed(0, g2d->regs + G2D_DMA_HOLD_CMD);
931 if (!(pending & G2D_INTP_ACMD_FIN)) {
932 writel_relaxed(G2D_DMA_CONTINUE,
933 g2d->regs + G2D_DMA_COMMAND);
934 }
935 }
936
937 if (pending & G2D_INTP_ACMD_FIN)
938 queue_work(g2d->g2d_workq, &g2d->runqueue_work);
939
940 return IRQ_HANDLED;
941}
942
943static int g2d_check_reg_offset(struct device *dev,
944 struct g2d_cmdlist_node *node,
945 int nr, bool for_addr)
946{
947 struct g2d_cmdlist *cmdlist = node->cmdlist;
948 int reg_offset;
949 int index;
950 int i;
951
952 for (i = 0; i < nr; i++) {
953 struct g2d_buf_info *buf_info = &node->buf_info;
954 struct g2d_buf_desc *buf_desc;
955 enum g2d_reg_type reg_type;
956 unsigned long value;
957
958 index = cmdlist->last - 2 * (i + 1);
959
960 reg_offset = cmdlist->data[index] & ~0xfffff000;
961 if (reg_offset < G2D_VALID_START || reg_offset > G2D_VALID_END)
962 goto err;
963 if (reg_offset % 4)
964 goto err;
965
966 switch (reg_offset) {
967 case G2D_SRC_BASE_ADDR:
968 case G2D_SRC_PLANE2_BASE_ADDR:
969 case G2D_DST_BASE_ADDR:
970 case G2D_DST_PLANE2_BASE_ADDR:
971 case G2D_PAT_BASE_ADDR:
972 case G2D_MSK_BASE_ADDR:
973 if (!for_addr)
974 goto err;
975
976 reg_type = g2d_get_reg_type(reg_offset);
977 if (reg_type == REG_TYPE_NONE)
978 goto err;
979
980
981 if ((cmdlist->data[index] & ~0x7fffffff) >> 31) {
982 buf_info->types[reg_type] = BUF_TYPE_USERPTR;
983 cmdlist->data[index] &= ~G2D_BUF_USERPTR;
984 } else
985 buf_info->types[reg_type] = BUF_TYPE_GEM;
986 break;
987 case G2D_SRC_COLOR_MODE:
988 case G2D_DST_COLOR_MODE:
989 if (for_addr)
990 goto err;
991
992 reg_type = g2d_get_reg_type(reg_offset);
993 if (reg_type == REG_TYPE_NONE)
994 goto err;
995
996 buf_desc = &buf_info->descs[reg_type];
997 value = cmdlist->data[index + 1];
998
999 buf_desc->format = value & 0xf;
1000 break;
1001 case G2D_SRC_LEFT_TOP:
1002 case G2D_DST_LEFT_TOP:
1003 if (for_addr)
1004 goto err;
1005
1006 reg_type = g2d_get_reg_type(reg_offset);
1007 if (reg_type == REG_TYPE_NONE)
1008 goto err;
1009
1010 buf_desc = &buf_info->descs[reg_type];
1011 value = cmdlist->data[index + 1];
1012
1013 buf_desc->left_x = value & 0x1fff;
1014 buf_desc->top_y = (value & 0x1fff0000) >> 16;
1015 break;
1016 case G2D_SRC_RIGHT_BOTTOM:
1017 case G2D_DST_RIGHT_BOTTOM:
1018 if (for_addr)
1019 goto err;
1020
1021 reg_type = g2d_get_reg_type(reg_offset);
1022 if (reg_type == REG_TYPE_NONE)
1023 goto err;
1024
1025 buf_desc = &buf_info->descs[reg_type];
1026 value = cmdlist->data[index + 1];
1027
1028 buf_desc->right_x = value & 0x1fff;
1029 buf_desc->bottom_y = (value & 0x1fff0000) >> 16;
1030 break;
1031 default:
1032 if (for_addr)
1033 goto err;
1034 break;
1035 }
1036 }
1037
1038 return 0;
1039
1040err:
1041 dev_err(dev, "Bad register offset: 0x%lx\n", cmdlist->data[index]);
1042 return -EINVAL;
1043}
1044
1045
1046int exynos_g2d_get_ver_ioctl(struct drm_device *drm_dev, void *data,
1047 struct drm_file *file)
1048{
1049 struct drm_exynos_g2d_get_ver *ver = data;
1050
1051 ver->major = G2D_HW_MAJOR_VER;
1052 ver->minor = G2D_HW_MINOR_VER;
1053
1054 return 0;
1055}
1056EXPORT_SYMBOL_GPL(exynos_g2d_get_ver_ioctl);
1057
1058int exynos_g2d_set_cmdlist_ioctl(struct drm_device *drm_dev, void *data,
1059 struct drm_file *file)
1060{
1061 struct drm_exynos_file_private *file_priv = file->driver_priv;
1062 struct exynos_drm_g2d_private *g2d_priv = file_priv->g2d_priv;
1063 struct device *dev = g2d_priv->dev;
1064 struct g2d_data *g2d;
1065 struct drm_exynos_g2d_set_cmdlist *req = data;
1066 struct drm_exynos_g2d_cmd *cmd;
1067 struct drm_exynos_pending_g2d_event *e;
1068 struct g2d_cmdlist_node *node;
1069 struct g2d_cmdlist *cmdlist;
1070 unsigned long flags;
1071 int size;
1072 int ret;
1073
1074 if (!dev)
1075 return -ENODEV;
1076
1077 g2d = dev_get_drvdata(dev);
1078 if (!g2d)
1079 return -EFAULT;
1080
1081 node = g2d_get_cmdlist(g2d);
1082 if (!node)
1083 return -ENOMEM;
1084
1085 node->event = NULL;
1086
1087 if (req->event_type != G2D_EVENT_NOT) {
1088 spin_lock_irqsave(&drm_dev->event_lock, flags);
1089 if (file->event_space < sizeof(e->event)) {
1090 spin_unlock_irqrestore(&drm_dev->event_lock, flags);
1091 ret = -ENOMEM;
1092 goto err;
1093 }
1094 file->event_space -= sizeof(e->event);
1095 spin_unlock_irqrestore(&drm_dev->event_lock, flags);
1096
1097 e = kzalloc(sizeof(*node->event), GFP_KERNEL);
1098 if (!e) {
1099 dev_err(dev, "failed to allocate event\n");
1100
1101 spin_lock_irqsave(&drm_dev->event_lock, flags);
1102 file->event_space += sizeof(e->event);
1103 spin_unlock_irqrestore(&drm_dev->event_lock, flags);
1104
1105 ret = -ENOMEM;
1106 goto err;
1107 }
1108
1109 e->event.base.type = DRM_EXYNOS_G2D_EVENT;
1110 e->event.base.length = sizeof(e->event);
1111 e->event.user_data = req->user_data;
1112 e->base.event = &e->event.base;
1113 e->base.file_priv = file;
1114 e->base.destroy = (void (*) (struct drm_pending_event *)) kfree;
1115
1116 node->event = e;
1117 }
1118
1119 cmdlist = node->cmdlist;
1120
1121 cmdlist->last = 0;
1122
1123
1124
1125
1126
1127
1128
1129
1130 cmdlist->data[cmdlist->last++] = G2D_SOFT_RESET;
1131 cmdlist->data[cmdlist->last++] = G2D_SFRCLEAR;
1132 cmdlist->data[cmdlist->last++] = G2D_SRC_BASE_ADDR;
1133 cmdlist->data[cmdlist->last++] = 0;
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144 if (node->event) {
1145 cmdlist->data[cmdlist->last++] = G2D_INTEN;
1146 cmdlist->data[cmdlist->last++] = G2D_INTEN_ACF | G2D_INTEN_GCF;
1147 cmdlist->data[cmdlist->last++] = G2D_DMA_HOLD_CMD;
1148 cmdlist->data[cmdlist->last++] = G2D_LIST_HOLD;
1149 } else {
1150 cmdlist->data[cmdlist->last++] = G2D_INTEN;
1151 cmdlist->data[cmdlist->last++] = G2D_INTEN_ACF;
1152 }
1153
1154
1155 size = cmdlist->last + req->cmd_nr * 2 + req->cmd_buf_nr * 2 + 2;
1156 if (size > G2D_CMDLIST_DATA_NUM) {
1157 dev_err(dev, "cmdlist size is too big\n");
1158 ret = -EINVAL;
1159 goto err_free_event;
1160 }
1161
1162 cmd = (struct drm_exynos_g2d_cmd *)(uint32_t)req->cmd;
1163
1164 if (copy_from_user(cmdlist->data + cmdlist->last,
1165 (void __user *)cmd,
1166 sizeof(*cmd) * req->cmd_nr)) {
1167 ret = -EFAULT;
1168 goto err_free_event;
1169 }
1170 cmdlist->last += req->cmd_nr * 2;
1171
1172 ret = g2d_check_reg_offset(dev, node, req->cmd_nr, false);
1173 if (ret < 0)
1174 goto err_free_event;
1175
1176 node->buf_info.map_nr = req->cmd_buf_nr;
1177 if (req->cmd_buf_nr) {
1178 struct drm_exynos_g2d_cmd *cmd_buf;
1179
1180 cmd_buf = (struct drm_exynos_g2d_cmd *)(uint32_t)req->cmd_buf;
1181
1182 if (copy_from_user(cmdlist->data + cmdlist->last,
1183 (void __user *)cmd_buf,
1184 sizeof(*cmd_buf) * req->cmd_buf_nr)) {
1185 ret = -EFAULT;
1186 goto err_free_event;
1187 }
1188 cmdlist->last += req->cmd_buf_nr * 2;
1189
1190 ret = g2d_check_reg_offset(dev, node, req->cmd_buf_nr, true);
1191 if (ret < 0)
1192 goto err_free_event;
1193
1194 ret = g2d_map_cmdlist_gem(g2d, node, drm_dev, file);
1195 if (ret < 0)
1196 goto err_unmap;
1197 }
1198
1199 cmdlist->data[cmdlist->last++] = G2D_BITBLT_START;
1200 cmdlist->data[cmdlist->last++] = G2D_START_BITBLT;
1201
1202
1203 cmdlist->head = cmdlist->last / 2;
1204
1205
1206 cmdlist->data[cmdlist->last] = 0;
1207
1208 g2d_add_cmdlist_to_inuse(g2d_priv, node);
1209
1210 return 0;
1211
1212err_unmap:
1213 g2d_unmap_cmdlist_gem(g2d, node, file);
1214err_free_event:
1215 if (node->event) {
1216 spin_lock_irqsave(&drm_dev->event_lock, flags);
1217 file->event_space += sizeof(e->event);
1218 spin_unlock_irqrestore(&drm_dev->event_lock, flags);
1219 kfree(node->event);
1220 }
1221err:
1222 g2d_put_cmdlist(g2d, node);
1223 return ret;
1224}
1225EXPORT_SYMBOL_GPL(exynos_g2d_set_cmdlist_ioctl);
1226
1227int exynos_g2d_exec_ioctl(struct drm_device *drm_dev, void *data,
1228 struct drm_file *file)
1229{
1230 struct drm_exynos_file_private *file_priv = file->driver_priv;
1231 struct exynos_drm_g2d_private *g2d_priv = file_priv->g2d_priv;
1232 struct device *dev = g2d_priv->dev;
1233 struct g2d_data *g2d;
1234 struct drm_exynos_g2d_exec *req = data;
1235 struct g2d_runqueue_node *runqueue_node;
1236 struct list_head *run_cmdlist;
1237 struct list_head *event_list;
1238
1239 if (!dev)
1240 return -ENODEV;
1241
1242 g2d = dev_get_drvdata(dev);
1243 if (!g2d)
1244 return -EFAULT;
1245
1246 runqueue_node = kmem_cache_alloc(g2d->runqueue_slab, GFP_KERNEL);
1247 if (!runqueue_node) {
1248 dev_err(dev, "failed to allocate memory\n");
1249 return -ENOMEM;
1250 }
1251 run_cmdlist = &runqueue_node->run_cmdlist;
1252 event_list = &runqueue_node->event_list;
1253 INIT_LIST_HEAD(run_cmdlist);
1254 INIT_LIST_HEAD(event_list);
1255 init_completion(&runqueue_node->complete);
1256 runqueue_node->async = req->async;
1257
1258 list_splice_init(&g2d_priv->inuse_cmdlist, run_cmdlist);
1259 list_splice_init(&g2d_priv->event_list, event_list);
1260
1261 if (list_empty(run_cmdlist)) {
1262 dev_err(dev, "there is no inuse cmdlist\n");
1263 kmem_cache_free(g2d->runqueue_slab, runqueue_node);
1264 return -EPERM;
1265 }
1266
1267 mutex_lock(&g2d->runqueue_mutex);
1268 runqueue_node->pid = current->pid;
1269 runqueue_node->filp = file;
1270 list_add_tail(&runqueue_node->list, &g2d->runqueue);
1271 if (!g2d->runqueue_node)
1272 g2d_exec_runqueue(g2d);
1273 mutex_unlock(&g2d->runqueue_mutex);
1274
1275 if (runqueue_node->async)
1276 goto out;
1277
1278 wait_for_completion(&runqueue_node->complete);
1279 g2d_free_runqueue_node(g2d, runqueue_node);
1280
1281out:
1282 return 0;
1283}
1284EXPORT_SYMBOL_GPL(exynos_g2d_exec_ioctl);
1285
1286static int g2d_subdrv_probe(struct drm_device *drm_dev, struct device *dev)
1287{
1288 struct g2d_data *g2d;
1289 int ret;
1290
1291 g2d = dev_get_drvdata(dev);
1292 if (!g2d)
1293 return -EFAULT;
1294
1295
1296 ret = g2d_init_cmdlist(g2d);
1297 if (ret < 0) {
1298 dev_err(dev, "cmdlist init failed\n");
1299 return ret;
1300 }
1301
1302 if (!is_drm_iommu_supported(drm_dev))
1303 return 0;
1304
1305 ret = drm_iommu_attach_device(drm_dev, dev);
1306 if (ret < 0) {
1307 dev_err(dev, "failed to enable iommu.\n");
1308 g2d_fini_cmdlist(g2d);
1309 }
1310
1311 return ret;
1312
1313}
1314
1315static void g2d_subdrv_remove(struct drm_device *drm_dev, struct device *dev)
1316{
1317 if (!is_drm_iommu_supported(drm_dev))
1318 return;
1319
1320 drm_iommu_detach_device(drm_dev, dev);
1321}
1322
1323static int g2d_open(struct drm_device *drm_dev, struct device *dev,
1324 struct drm_file *file)
1325{
1326 struct drm_exynos_file_private *file_priv = file->driver_priv;
1327 struct exynos_drm_g2d_private *g2d_priv;
1328
1329 g2d_priv = kzalloc(sizeof(*g2d_priv), GFP_KERNEL);
1330 if (!g2d_priv) {
1331 dev_err(dev, "failed to allocate g2d private data\n");
1332 return -ENOMEM;
1333 }
1334
1335 g2d_priv->dev = dev;
1336 file_priv->g2d_priv = g2d_priv;
1337
1338 INIT_LIST_HEAD(&g2d_priv->inuse_cmdlist);
1339 INIT_LIST_HEAD(&g2d_priv->event_list);
1340 INIT_LIST_HEAD(&g2d_priv->userptr_list);
1341
1342 return 0;
1343}
1344
1345static void g2d_close(struct drm_device *drm_dev, struct device *dev,
1346 struct drm_file *file)
1347{
1348 struct drm_exynos_file_private *file_priv = file->driver_priv;
1349 struct exynos_drm_g2d_private *g2d_priv = file_priv->g2d_priv;
1350 struct g2d_data *g2d;
1351 struct g2d_cmdlist_node *node, *n;
1352
1353 if (!dev)
1354 return;
1355
1356 g2d = dev_get_drvdata(dev);
1357 if (!g2d)
1358 return;
1359
1360 mutex_lock(&g2d->cmdlist_mutex);
1361 list_for_each_entry_safe(node, n, &g2d_priv->inuse_cmdlist, list) {
1362
1363
1364
1365
1366
1367
1368
1369 g2d_unmap_cmdlist_gem(g2d, node, file);
1370 list_move_tail(&node->list, &g2d->free_cmdlist);
1371 }
1372 mutex_unlock(&g2d->cmdlist_mutex);
1373
1374
1375 g2d_userptr_free_all(drm_dev, g2d, file);
1376
1377 kfree(file_priv->g2d_priv);
1378}
1379
1380static int g2d_probe(struct platform_device *pdev)
1381{
1382 struct device *dev = &pdev->dev;
1383 struct resource *res;
1384 struct g2d_data *g2d;
1385 struct exynos_drm_subdrv *subdrv;
1386 int ret;
1387
1388 g2d = devm_kzalloc(dev, sizeof(*g2d), GFP_KERNEL);
1389 if (!g2d) {
1390 dev_err(dev, "failed to allocate driver data\n");
1391 return -ENOMEM;
1392 }
1393
1394 g2d->runqueue_slab = kmem_cache_create("g2d_runqueue_slab",
1395 sizeof(struct g2d_runqueue_node), 0, 0, NULL);
1396 if (!g2d->runqueue_slab)
1397 return -ENOMEM;
1398
1399 g2d->dev = dev;
1400
1401 g2d->g2d_workq = create_singlethread_workqueue("g2d");
1402 if (!g2d->g2d_workq) {
1403 dev_err(dev, "failed to create workqueue\n");
1404 ret = -EINVAL;
1405 goto err_destroy_slab;
1406 }
1407
1408 INIT_WORK(&g2d->runqueue_work, g2d_runqueue_worker);
1409 INIT_LIST_HEAD(&g2d->free_cmdlist);
1410 INIT_LIST_HEAD(&g2d->runqueue);
1411
1412 mutex_init(&g2d->cmdlist_mutex);
1413 mutex_init(&g2d->runqueue_mutex);
1414
1415 g2d->gate_clk = devm_clk_get(dev, "fimg2d");
1416 if (IS_ERR(g2d->gate_clk)) {
1417 dev_err(dev, "failed to get gate clock\n");
1418 ret = PTR_ERR(g2d->gate_clk);
1419 goto err_destroy_workqueue;
1420 }
1421
1422 pm_runtime_enable(dev);
1423
1424 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1425
1426 g2d->regs = devm_ioremap_resource(dev, res);
1427 if (IS_ERR(g2d->regs)) {
1428 ret = PTR_ERR(g2d->regs);
1429 goto err_put_clk;
1430 }
1431
1432 g2d->irq = platform_get_irq(pdev, 0);
1433 if (g2d->irq < 0) {
1434 dev_err(dev, "failed to get irq\n");
1435 ret = g2d->irq;
1436 goto err_put_clk;
1437 }
1438
1439 ret = devm_request_irq(dev, g2d->irq, g2d_irq_handler, 0,
1440 "drm_g2d", g2d);
1441 if (ret < 0) {
1442 dev_err(dev, "irq request failed\n");
1443 goto err_put_clk;
1444 }
1445
1446 g2d->max_pool = MAX_POOL;
1447
1448 platform_set_drvdata(pdev, g2d);
1449
1450 subdrv = &g2d->subdrv;
1451 subdrv->dev = dev;
1452 subdrv->probe = g2d_subdrv_probe;
1453 subdrv->remove = g2d_subdrv_remove;
1454 subdrv->open = g2d_open;
1455 subdrv->close = g2d_close;
1456
1457 ret = exynos_drm_subdrv_register(subdrv);
1458 if (ret < 0) {
1459 dev_err(dev, "failed to register drm g2d device\n");
1460 goto err_put_clk;
1461 }
1462
1463 dev_info(dev, "The exynos g2d(ver %d.%d) successfully probed\n",
1464 G2D_HW_MAJOR_VER, G2D_HW_MINOR_VER);
1465
1466 return 0;
1467
1468err_put_clk:
1469 pm_runtime_disable(dev);
1470err_destroy_workqueue:
1471 destroy_workqueue(g2d->g2d_workq);
1472err_destroy_slab:
1473 kmem_cache_destroy(g2d->runqueue_slab);
1474 return ret;
1475}
1476
1477static int g2d_remove(struct platform_device *pdev)
1478{
1479 struct g2d_data *g2d = platform_get_drvdata(pdev);
1480
1481 cancel_work_sync(&g2d->runqueue_work);
1482 exynos_drm_subdrv_unregister(&g2d->subdrv);
1483
1484 while (g2d->runqueue_node) {
1485 g2d_free_runqueue_node(g2d, g2d->runqueue_node);
1486 g2d->runqueue_node = g2d_get_runqueue_node(g2d);
1487 }
1488
1489 pm_runtime_disable(&pdev->dev);
1490
1491 g2d_fini_cmdlist(g2d);
1492 destroy_workqueue(g2d->g2d_workq);
1493 kmem_cache_destroy(g2d->runqueue_slab);
1494
1495 return 0;
1496}
1497
1498#ifdef CONFIG_PM_SLEEP
1499static int g2d_suspend(struct device *dev)
1500{
1501 struct g2d_data *g2d = dev_get_drvdata(dev);
1502
1503 mutex_lock(&g2d->runqueue_mutex);
1504 g2d->suspended = true;
1505 mutex_unlock(&g2d->runqueue_mutex);
1506
1507 while (g2d->runqueue_node)
1508
1509 usleep_range(500, 1000);
1510
1511 flush_work(&g2d->runqueue_work);
1512
1513 return 0;
1514}
1515
1516static int g2d_resume(struct device *dev)
1517{
1518 struct g2d_data *g2d = dev_get_drvdata(dev);
1519
1520 g2d->suspended = false;
1521 g2d_exec_runqueue(g2d);
1522
1523 return 0;
1524}
1525#endif
1526
1527static SIMPLE_DEV_PM_OPS(g2d_pm_ops, g2d_suspend, g2d_resume);
1528
1529#ifdef CONFIG_OF
1530static const struct of_device_id exynos_g2d_match[] = {
1531 { .compatible = "samsung,exynos5250-g2d" },
1532 {},
1533};
1534#endif
1535
1536struct platform_driver g2d_driver = {
1537 .probe = g2d_probe,
1538 .remove = g2d_remove,
1539 .driver = {
1540 .name = "s5p-g2d",
1541 .owner = THIS_MODULE,
1542 .pm = &g2d_pm_ops,
1543 .of_match_table = of_match_ptr(exynos_g2d_match),
1544 },
1545};
1546
