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d7f1642c JS |
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 | ||
760285e7 DH |
21 | #include <drm/drmP.h> |
22 | #include <drm/exynos_drm.h> | |
d7f1642c JS |
23 | #include "exynos_drm_drv.h" |
24 | #include "exynos_drm_gem.h" | |
25 | ||
26 | #define G2D_HW_MAJOR_VER 4 | |
27 | #define G2D_HW_MINOR_VER 1 | |
28 | ||
29 | /* vaild register range set from user: 0x0104 ~ 0x0880 */ | |
30 | #define G2D_VALID_START 0x0104 | |
31 | #define G2D_VALID_END 0x0880 | |
32 | ||
33 | /* general registers */ | |
34 | #define G2D_SOFT_RESET 0x0000 | |
35 | #define G2D_INTEN 0x0004 | |
36 | #define G2D_INTC_PEND 0x000C | |
37 | #define G2D_DMA_SFR_BASE_ADDR 0x0080 | |
38 | #define G2D_DMA_COMMAND 0x0084 | |
39 | #define G2D_DMA_STATUS 0x008C | |
40 | #define G2D_DMA_HOLD_CMD 0x0090 | |
41 | ||
42 | /* command registers */ | |
43 | #define G2D_BITBLT_START 0x0100 | |
44 | ||
45 | /* registers for base address */ | |
46 | #define G2D_SRC_BASE_ADDR 0x0304 | |
47 | #define G2D_SRC_PLANE2_BASE_ADDR 0x0318 | |
48 | #define G2D_DST_BASE_ADDR 0x0404 | |
49 | #define G2D_DST_PLANE2_BASE_ADDR 0x0418 | |
50 | #define G2D_PAT_BASE_ADDR 0x0500 | |
51 | #define G2D_MSK_BASE_ADDR 0x0520 | |
52 | ||
53 | /* G2D_SOFT_RESET */ | |
54 | #define G2D_SFRCLEAR (1 << 1) | |
55 | #define G2D_R (1 << 0) | |
56 | ||
57 | /* G2D_INTEN */ | |
58 | #define G2D_INTEN_ACF (1 << 3) | |
59 | #define G2D_INTEN_UCF (1 << 2) | |
60 | #define G2D_INTEN_GCF (1 << 1) | |
61 | #define G2D_INTEN_SCF (1 << 0) | |
62 | ||
63 | /* G2D_INTC_PEND */ | |
64 | #define G2D_INTP_ACMD_FIN (1 << 3) | |
65 | #define G2D_INTP_UCMD_FIN (1 << 2) | |
66 | #define G2D_INTP_GCMD_FIN (1 << 1) | |
67 | #define G2D_INTP_SCMD_FIN (1 << 0) | |
68 | ||
69 | /* G2D_DMA_COMMAND */ | |
70 | #define G2D_DMA_HALT (1 << 2) | |
71 | #define G2D_DMA_CONTINUE (1 << 1) | |
72 | #define G2D_DMA_START (1 << 0) | |
73 | ||
74 | /* G2D_DMA_STATUS */ | |
75 | #define G2D_DMA_LIST_DONE_COUNT (0xFF << 17) | |
76 | #define G2D_DMA_BITBLT_DONE_COUNT (0xFFFF << 1) | |
77 | #define G2D_DMA_DONE (1 << 0) | |
78 | #define G2D_DMA_LIST_DONE_COUNT_OFFSET 17 | |
79 | ||
80 | /* G2D_DMA_HOLD_CMD */ | |
81 | #define G2D_USET_HOLD (1 << 2) | |
82 | #define G2D_LIST_HOLD (1 << 1) | |
83 | #define G2D_BITBLT_HOLD (1 << 0) | |
84 | ||
85 | /* G2D_BITBLT_START */ | |
86 | #define G2D_START_CASESEL (1 << 2) | |
87 | #define G2D_START_NHOLT (1 << 1) | |
88 | #define G2D_START_BITBLT (1 << 0) | |
89 | ||
90 | #define G2D_CMDLIST_SIZE (PAGE_SIZE / 4) | |
91 | #define G2D_CMDLIST_NUM 64 | |
92 | #define G2D_CMDLIST_POOL_SIZE (G2D_CMDLIST_SIZE * G2D_CMDLIST_NUM) | |
93 | #define G2D_CMDLIST_DATA_NUM (G2D_CMDLIST_SIZE / sizeof(u32) - 2) | |
94 | ||
95 | /* cmdlist data structure */ | |
96 | struct g2d_cmdlist { | |
97 | u32 head; | |
98 | u32 data[G2D_CMDLIST_DATA_NUM]; | |
99 | u32 last; /* last data offset */ | |
100 | }; | |
101 | ||
102 | struct drm_exynos_pending_g2d_event { | |
103 | struct drm_pending_event base; | |
104 | struct drm_exynos_g2d_event event; | |
105 | }; | |
106 | ||
107 | struct g2d_gem_node { | |
108 | struct list_head list; | |
109 | unsigned int handle; | |
110 | }; | |
111 | ||
112 | struct g2d_cmdlist_node { | |
113 | struct list_head list; | |
114 | struct g2d_cmdlist *cmdlist; | |
115 | unsigned int gem_nr; | |
116 | dma_addr_t dma_addr; | |
117 | ||
118 | struct drm_exynos_pending_g2d_event *event; | |
119 | }; | |
120 | ||
121 | struct g2d_runqueue_node { | |
122 | struct list_head list; | |
123 | struct list_head run_cmdlist; | |
124 | struct list_head event_list; | |
125 | struct completion complete; | |
126 | int async; | |
127 | }; | |
128 | ||
129 | struct g2d_data { | |
130 | struct device *dev; | |
131 | struct clk *gate_clk; | |
d7f1642c JS |
132 | void __iomem *regs; |
133 | int irq; | |
134 | struct workqueue_struct *g2d_workq; | |
135 | struct work_struct runqueue_work; | |
136 | struct exynos_drm_subdrv subdrv; | |
137 | bool suspended; | |
138 | ||
139 | /* cmdlist */ | |
140 | struct g2d_cmdlist_node *cmdlist_node; | |
141 | struct list_head free_cmdlist; | |
142 | struct mutex cmdlist_mutex; | |
143 | dma_addr_t cmdlist_pool; | |
144 | void *cmdlist_pool_virt; | |
145 | ||
146 | /* runqueue*/ | |
147 | struct g2d_runqueue_node *runqueue_node; | |
148 | struct list_head runqueue; | |
149 | struct mutex runqueue_mutex; | |
150 | struct kmem_cache *runqueue_slab; | |
151 | }; | |
152 | ||
153 | static int g2d_init_cmdlist(struct g2d_data *g2d) | |
154 | { | |
155 | struct device *dev = g2d->dev; | |
156 | struct g2d_cmdlist_node *node = g2d->cmdlist_node; | |
157 | int nr; | |
158 | int ret; | |
159 | ||
160 | g2d->cmdlist_pool_virt = dma_alloc_coherent(dev, G2D_CMDLIST_POOL_SIZE, | |
161 | &g2d->cmdlist_pool, GFP_KERNEL); | |
162 | if (!g2d->cmdlist_pool_virt) { | |
163 | dev_err(dev, "failed to allocate dma memory\n"); | |
164 | return -ENOMEM; | |
165 | } | |
166 | ||
167 | node = kcalloc(G2D_CMDLIST_NUM, G2D_CMDLIST_NUM * sizeof(*node), | |
168 | GFP_KERNEL); | |
169 | if (!node) { | |
170 | dev_err(dev, "failed to allocate memory\n"); | |
171 | ret = -ENOMEM; | |
172 | goto err; | |
173 | } | |
174 | ||
175 | for (nr = 0; nr < G2D_CMDLIST_NUM; nr++) { | |
176 | node[nr].cmdlist = | |
177 | g2d->cmdlist_pool_virt + nr * G2D_CMDLIST_SIZE; | |
178 | node[nr].dma_addr = | |
179 | g2d->cmdlist_pool + nr * G2D_CMDLIST_SIZE; | |
180 | ||
181 | list_add_tail(&node[nr].list, &g2d->free_cmdlist); | |
182 | } | |
183 | ||
184 | return 0; | |
185 | ||
186 | err: | |
187 | dma_free_coherent(dev, G2D_CMDLIST_POOL_SIZE, g2d->cmdlist_pool_virt, | |
188 | g2d->cmdlist_pool); | |
189 | return ret; | |
190 | } | |
191 | ||
192 | static void g2d_fini_cmdlist(struct g2d_data *g2d) | |
193 | { | |
194 | struct device *dev = g2d->dev; | |
195 | ||
196 | kfree(g2d->cmdlist_node); | |
197 | dma_free_coherent(dev, G2D_CMDLIST_POOL_SIZE, g2d->cmdlist_pool_virt, | |
198 | g2d->cmdlist_pool); | |
199 | } | |
200 | ||
201 | static struct g2d_cmdlist_node *g2d_get_cmdlist(struct g2d_data *g2d) | |
202 | { | |
203 | struct device *dev = g2d->dev; | |
204 | struct g2d_cmdlist_node *node; | |
205 | ||
206 | mutex_lock(&g2d->cmdlist_mutex); | |
207 | if (list_empty(&g2d->free_cmdlist)) { | |
208 | dev_err(dev, "there is no free cmdlist\n"); | |
209 | mutex_unlock(&g2d->cmdlist_mutex); | |
210 | return NULL; | |
211 | } | |
212 | ||
213 | node = list_first_entry(&g2d->free_cmdlist, struct g2d_cmdlist_node, | |
214 | list); | |
215 | list_del_init(&node->list); | |
216 | mutex_unlock(&g2d->cmdlist_mutex); | |
217 | ||
218 | return node; | |
219 | } | |
220 | ||
221 | static void g2d_put_cmdlist(struct g2d_data *g2d, struct g2d_cmdlist_node *node) | |
222 | { | |
223 | mutex_lock(&g2d->cmdlist_mutex); | |
224 | list_move_tail(&node->list, &g2d->free_cmdlist); | |
225 | mutex_unlock(&g2d->cmdlist_mutex); | |
226 | } | |
227 | ||
228 | static void g2d_add_cmdlist_to_inuse(struct exynos_drm_g2d_private *g2d_priv, | |
229 | struct g2d_cmdlist_node *node) | |
230 | { | |
231 | struct g2d_cmdlist_node *lnode; | |
232 | ||
233 | if (list_empty(&g2d_priv->inuse_cmdlist)) | |
234 | goto add_to_list; | |
235 | ||
236 | /* this links to base address of new cmdlist */ | |
237 | lnode = list_entry(g2d_priv->inuse_cmdlist.prev, | |
238 | struct g2d_cmdlist_node, list); | |
239 | lnode->cmdlist->data[lnode->cmdlist->last] = node->dma_addr; | |
240 | ||
241 | add_to_list: | |
242 | list_add_tail(&node->list, &g2d_priv->inuse_cmdlist); | |
243 | ||
244 | if (node->event) | |
245 | list_add_tail(&node->event->base.link, &g2d_priv->event_list); | |
246 | } | |
247 | ||
248 | static int g2d_get_cmdlist_gem(struct drm_device *drm_dev, | |
249 | struct drm_file *file, | |
250 | struct g2d_cmdlist_node *node) | |
251 | { | |
252 | struct drm_exynos_file_private *file_priv = file->driver_priv; | |
253 | struct exynos_drm_g2d_private *g2d_priv = file_priv->g2d_priv; | |
254 | struct g2d_cmdlist *cmdlist = node->cmdlist; | |
255 | dma_addr_t *addr; | |
256 | int offset; | |
257 | int i; | |
258 | ||
259 | for (i = 0; i < node->gem_nr; i++) { | |
260 | struct g2d_gem_node *gem_node; | |
261 | ||
262 | gem_node = kzalloc(sizeof(*gem_node), GFP_KERNEL); | |
263 | if (!gem_node) { | |
264 | dev_err(g2d_priv->dev, "failed to allocate gem node\n"); | |
265 | return -ENOMEM; | |
266 | } | |
267 | ||
268 | offset = cmdlist->last - (i * 2 + 1); | |
269 | gem_node->handle = cmdlist->data[offset]; | |
270 | ||
271 | addr = exynos_drm_gem_get_dma_addr(drm_dev, gem_node->handle, | |
272 | file); | |
273 | if (IS_ERR(addr)) { | |
274 | node->gem_nr = i; | |
275 | kfree(gem_node); | |
276 | return PTR_ERR(addr); | |
277 | } | |
278 | ||
279 | cmdlist->data[offset] = *addr; | |
280 | list_add_tail(&gem_node->list, &g2d_priv->gem_list); | |
281 | g2d_priv->gem_nr++; | |
282 | } | |
283 | ||
284 | return 0; | |
285 | } | |
286 | ||
287 | static void g2d_put_cmdlist_gem(struct drm_device *drm_dev, | |
288 | struct drm_file *file, | |
289 | unsigned int nr) | |
290 | { | |
291 | struct drm_exynos_file_private *file_priv = file->driver_priv; | |
292 | struct exynos_drm_g2d_private *g2d_priv = file_priv->g2d_priv; | |
293 | struct g2d_gem_node *node, *n; | |
294 | ||
295 | list_for_each_entry_safe_reverse(node, n, &g2d_priv->gem_list, list) { | |
296 | if (!nr) | |
297 | break; | |
298 | ||
299 | exynos_drm_gem_put_dma_addr(drm_dev, node->handle, file); | |
300 | list_del_init(&node->list); | |
301 | kfree(node); | |
302 | nr--; | |
303 | } | |
304 | } | |
305 | ||
306 | static void g2d_dma_start(struct g2d_data *g2d, | |
307 | struct g2d_runqueue_node *runqueue_node) | |
308 | { | |
309 | struct g2d_cmdlist_node *node = | |
310 | list_first_entry(&runqueue_node->run_cmdlist, | |
311 | struct g2d_cmdlist_node, list); | |
312 | ||
313 | pm_runtime_get_sync(g2d->dev); | |
314 | clk_enable(g2d->gate_clk); | |
315 | ||
316 | /* interrupt enable */ | |
317 | writel_relaxed(G2D_INTEN_ACF | G2D_INTEN_UCF | G2D_INTEN_GCF, | |
318 | g2d->regs + G2D_INTEN); | |
319 | ||
320 | writel_relaxed(node->dma_addr, g2d->regs + G2D_DMA_SFR_BASE_ADDR); | |
321 | writel_relaxed(G2D_DMA_START, g2d->regs + G2D_DMA_COMMAND); | |
322 | } | |
323 | ||
324 | static struct g2d_runqueue_node *g2d_get_runqueue_node(struct g2d_data *g2d) | |
325 | { | |
326 | struct g2d_runqueue_node *runqueue_node; | |
327 | ||
328 | if (list_empty(&g2d->runqueue)) | |
329 | return NULL; | |
330 | ||
331 | runqueue_node = list_first_entry(&g2d->runqueue, | |
332 | struct g2d_runqueue_node, list); | |
333 | list_del_init(&runqueue_node->list); | |
334 | return runqueue_node; | |
335 | } | |
336 | ||
337 | static void g2d_free_runqueue_node(struct g2d_data *g2d, | |
338 | struct g2d_runqueue_node *runqueue_node) | |
339 | { | |
340 | if (!runqueue_node) | |
341 | return; | |
342 | ||
343 | mutex_lock(&g2d->cmdlist_mutex); | |
344 | list_splice_tail_init(&runqueue_node->run_cmdlist, &g2d->free_cmdlist); | |
345 | mutex_unlock(&g2d->cmdlist_mutex); | |
346 | ||
347 | kmem_cache_free(g2d->runqueue_slab, runqueue_node); | |
348 | } | |
349 | ||
350 | static void g2d_exec_runqueue(struct g2d_data *g2d) | |
351 | { | |
352 | g2d->runqueue_node = g2d_get_runqueue_node(g2d); | |
353 | if (g2d->runqueue_node) | |
354 | g2d_dma_start(g2d, g2d->runqueue_node); | |
355 | } | |
356 | ||
357 | static void g2d_runqueue_worker(struct work_struct *work) | |
358 | { | |
359 | struct g2d_data *g2d = container_of(work, struct g2d_data, | |
360 | runqueue_work); | |
361 | ||
362 | ||
363 | mutex_lock(&g2d->runqueue_mutex); | |
364 | clk_disable(g2d->gate_clk); | |
365 | pm_runtime_put_sync(g2d->dev); | |
366 | ||
367 | complete(&g2d->runqueue_node->complete); | |
368 | if (g2d->runqueue_node->async) | |
369 | g2d_free_runqueue_node(g2d, g2d->runqueue_node); | |
370 | ||
371 | if (g2d->suspended) | |
372 | g2d->runqueue_node = NULL; | |
373 | else | |
374 | g2d_exec_runqueue(g2d); | |
375 | mutex_unlock(&g2d->runqueue_mutex); | |
376 | } | |
377 | ||
378 | static void g2d_finish_event(struct g2d_data *g2d, u32 cmdlist_no) | |
379 | { | |
380 | struct drm_device *drm_dev = g2d->subdrv.drm_dev; | |
381 | struct g2d_runqueue_node *runqueue_node = g2d->runqueue_node; | |
382 | struct drm_exynos_pending_g2d_event *e; | |
383 | struct timeval now; | |
384 | unsigned long flags; | |
385 | ||
386 | if (list_empty(&runqueue_node->event_list)) | |
387 | return; | |
388 | ||
389 | e = list_first_entry(&runqueue_node->event_list, | |
390 | struct drm_exynos_pending_g2d_event, base.link); | |
391 | ||
392 | do_gettimeofday(&now); | |
393 | e->event.tv_sec = now.tv_sec; | |
394 | e->event.tv_usec = now.tv_usec; | |
395 | e->event.cmdlist_no = cmdlist_no; | |
396 | ||
397 | spin_lock_irqsave(&drm_dev->event_lock, flags); | |
398 | list_move_tail(&e->base.link, &e->base.file_priv->event_list); | |
399 | wake_up_interruptible(&e->base.file_priv->event_wait); | |
400 | spin_unlock_irqrestore(&drm_dev->event_lock, flags); | |
401 | } | |
402 | ||
403 | static irqreturn_t g2d_irq_handler(int irq, void *dev_id) | |
404 | { | |
405 | struct g2d_data *g2d = dev_id; | |
406 | u32 pending; | |
407 | ||
408 | pending = readl_relaxed(g2d->regs + G2D_INTC_PEND); | |
409 | if (pending) | |
410 | writel_relaxed(pending, g2d->regs + G2D_INTC_PEND); | |
411 | ||
412 | if (pending & G2D_INTP_GCMD_FIN) { | |
413 | u32 cmdlist_no = readl_relaxed(g2d->regs + G2D_DMA_STATUS); | |
414 | ||
415 | cmdlist_no = (cmdlist_no & G2D_DMA_LIST_DONE_COUNT) >> | |
416 | G2D_DMA_LIST_DONE_COUNT_OFFSET; | |
417 | ||
418 | g2d_finish_event(g2d, cmdlist_no); | |
419 | ||
420 | writel_relaxed(0, g2d->regs + G2D_DMA_HOLD_CMD); | |
421 | if (!(pending & G2D_INTP_ACMD_FIN)) { | |
422 | writel_relaxed(G2D_DMA_CONTINUE, | |
423 | g2d->regs + G2D_DMA_COMMAND); | |
424 | } | |
425 | } | |
426 | ||
427 | if (pending & G2D_INTP_ACMD_FIN) | |
428 | queue_work(g2d->g2d_workq, &g2d->runqueue_work); | |
429 | ||
430 | return IRQ_HANDLED; | |
431 | } | |
432 | ||
433 | static int g2d_check_reg_offset(struct device *dev, struct g2d_cmdlist *cmdlist, | |
434 | int nr, bool for_addr) | |
435 | { | |
436 | int reg_offset; | |
437 | int index; | |
438 | int i; | |
439 | ||
440 | for (i = 0; i < nr; i++) { | |
441 | index = cmdlist->last - 2 * (i + 1); | |
442 | reg_offset = cmdlist->data[index] & ~0xfffff000; | |
443 | ||
444 | if (reg_offset < G2D_VALID_START || reg_offset > G2D_VALID_END) | |
445 | goto err; | |
446 | if (reg_offset % 4) | |
447 | goto err; | |
448 | ||
449 | switch (reg_offset) { | |
450 | case G2D_SRC_BASE_ADDR: | |
451 | case G2D_SRC_PLANE2_BASE_ADDR: | |
452 | case G2D_DST_BASE_ADDR: | |
453 | case G2D_DST_PLANE2_BASE_ADDR: | |
454 | case G2D_PAT_BASE_ADDR: | |
455 | case G2D_MSK_BASE_ADDR: | |
456 | if (!for_addr) | |
457 | goto err; | |
458 | break; | |
459 | default: | |
460 | if (for_addr) | |
461 | goto err; | |
462 | break; | |
463 | } | |
464 | } | |
465 | ||
466 | return 0; | |
467 | ||
468 | err: | |
469 | dev_err(dev, "Bad register offset: 0x%x\n", cmdlist->data[index]); | |
470 | return -EINVAL; | |
471 | } | |
472 | ||
473 | /* ioctl functions */ | |
474 | int exynos_g2d_get_ver_ioctl(struct drm_device *drm_dev, void *data, | |
475 | struct drm_file *file) | |
476 | { | |
477 | struct drm_exynos_g2d_get_ver *ver = data; | |
478 | ||
479 | ver->major = G2D_HW_MAJOR_VER; | |
480 | ver->minor = G2D_HW_MINOR_VER; | |
481 | ||
482 | return 0; | |
483 | } | |
484 | EXPORT_SYMBOL_GPL(exynos_g2d_get_ver_ioctl); | |
485 | ||
486 | int exynos_g2d_set_cmdlist_ioctl(struct drm_device *drm_dev, void *data, | |
487 | struct drm_file *file) | |
488 | { | |
489 | struct drm_exynos_file_private *file_priv = file->driver_priv; | |
490 | struct exynos_drm_g2d_private *g2d_priv = file_priv->g2d_priv; | |
491 | struct device *dev = g2d_priv->dev; | |
492 | struct g2d_data *g2d; | |
493 | struct drm_exynos_g2d_set_cmdlist *req = data; | |
494 | struct drm_exynos_g2d_cmd *cmd; | |
495 | struct drm_exynos_pending_g2d_event *e; | |
496 | struct g2d_cmdlist_node *node; | |
497 | struct g2d_cmdlist *cmdlist; | |
498 | unsigned long flags; | |
499 | int size; | |
500 | int ret; | |
501 | ||
502 | if (!dev) | |
503 | return -ENODEV; | |
504 | ||
505 | g2d = dev_get_drvdata(dev); | |
506 | if (!g2d) | |
507 | return -EFAULT; | |
508 | ||
509 | node = g2d_get_cmdlist(g2d); | |
510 | if (!node) | |
511 | return -ENOMEM; | |
512 | ||
513 | node->event = NULL; | |
514 | ||
515 | if (req->event_type != G2D_EVENT_NOT) { | |
516 | spin_lock_irqsave(&drm_dev->event_lock, flags); | |
517 | if (file->event_space < sizeof(e->event)) { | |
518 | spin_unlock_irqrestore(&drm_dev->event_lock, flags); | |
519 | ret = -ENOMEM; | |
520 | goto err; | |
521 | } | |
522 | file->event_space -= sizeof(e->event); | |
523 | spin_unlock_irqrestore(&drm_dev->event_lock, flags); | |
524 | ||
525 | e = kzalloc(sizeof(*node->event), GFP_KERNEL); | |
526 | if (!e) { | |
527 | dev_err(dev, "failed to allocate event\n"); | |
528 | ||
529 | spin_lock_irqsave(&drm_dev->event_lock, flags); | |
530 | file->event_space += sizeof(e->event); | |
531 | spin_unlock_irqrestore(&drm_dev->event_lock, flags); | |
532 | ||
533 | ret = -ENOMEM; | |
534 | goto err; | |
535 | } | |
536 | ||
537 | e->event.base.type = DRM_EXYNOS_G2D_EVENT; | |
538 | e->event.base.length = sizeof(e->event); | |
539 | e->event.user_data = req->user_data; | |
540 | e->base.event = &e->event.base; | |
541 | e->base.file_priv = file; | |
542 | e->base.destroy = (void (*) (struct drm_pending_event *)) kfree; | |
543 | ||
544 | node->event = e; | |
545 | } | |
546 | ||
547 | cmdlist = node->cmdlist; | |
548 | ||
549 | cmdlist->last = 0; | |
550 | ||
551 | /* | |
552 | * If don't clear SFR registers, the cmdlist is affected by register | |
553 | * values of previous cmdlist. G2D hw executes SFR clear command and | |
554 | * a next command at the same time then the next command is ignored and | |
555 | * is executed rightly from next next command, so needs a dummy command | |
556 | * to next command of SFR clear command. | |
557 | */ | |
558 | cmdlist->data[cmdlist->last++] = G2D_SOFT_RESET; | |
559 | cmdlist->data[cmdlist->last++] = G2D_SFRCLEAR; | |
560 | cmdlist->data[cmdlist->last++] = G2D_SRC_BASE_ADDR; | |
561 | cmdlist->data[cmdlist->last++] = 0; | |
562 | ||
563 | if (node->event) { | |
564 | cmdlist->data[cmdlist->last++] = G2D_DMA_HOLD_CMD; | |
565 | cmdlist->data[cmdlist->last++] = G2D_LIST_HOLD; | |
566 | } | |
567 | ||
568 | /* Check size of cmdlist: last 2 is about G2D_BITBLT_START */ | |
569 | size = cmdlist->last + req->cmd_nr * 2 + req->cmd_gem_nr * 2 + 2; | |
570 | if (size > G2D_CMDLIST_DATA_NUM) { | |
571 | dev_err(dev, "cmdlist size is too big\n"); | |
572 | ret = -EINVAL; | |
573 | goto err_free_event; | |
574 | } | |
575 | ||
576 | cmd = (struct drm_exynos_g2d_cmd *)(uint32_t)req->cmd; | |
577 | ||
578 | if (copy_from_user(cmdlist->data + cmdlist->last, | |
579 | (void __user *)cmd, | |
580 | sizeof(*cmd) * req->cmd_nr)) { | |
581 | ret = -EFAULT; | |
582 | goto err_free_event; | |
583 | } | |
584 | cmdlist->last += req->cmd_nr * 2; | |
585 | ||
586 | ret = g2d_check_reg_offset(dev, cmdlist, req->cmd_nr, false); | |
587 | if (ret < 0) | |
588 | goto err_free_event; | |
589 | ||
590 | node->gem_nr = req->cmd_gem_nr; | |
591 | if (req->cmd_gem_nr) { | |
592 | struct drm_exynos_g2d_cmd *cmd_gem; | |
593 | ||
594 | cmd_gem = (struct drm_exynos_g2d_cmd *)(uint32_t)req->cmd_gem; | |
595 | ||
596 | if (copy_from_user(cmdlist->data + cmdlist->last, | |
597 | (void __user *)cmd_gem, | |
598 | sizeof(*cmd_gem) * req->cmd_gem_nr)) { | |
599 | ret = -EFAULT; | |
600 | goto err_free_event; | |
601 | } | |
602 | cmdlist->last += req->cmd_gem_nr * 2; | |
603 | ||
604 | ret = g2d_check_reg_offset(dev, cmdlist, req->cmd_gem_nr, true); | |
605 | if (ret < 0) | |
606 | goto err_free_event; | |
607 | ||
608 | ret = g2d_get_cmdlist_gem(drm_dev, file, node); | |
609 | if (ret < 0) | |
610 | goto err_unmap; | |
611 | } | |
612 | ||
613 | cmdlist->data[cmdlist->last++] = G2D_BITBLT_START; | |
614 | cmdlist->data[cmdlist->last++] = G2D_START_BITBLT; | |
615 | ||
616 | /* head */ | |
617 | cmdlist->head = cmdlist->last / 2; | |
618 | ||
619 | /* tail */ | |
620 | cmdlist->data[cmdlist->last] = 0; | |
621 | ||
622 | g2d_add_cmdlist_to_inuse(g2d_priv, node); | |
623 | ||
624 | return 0; | |
625 | ||
626 | err_unmap: | |
627 | g2d_put_cmdlist_gem(drm_dev, file, node->gem_nr); | |
628 | err_free_event: | |
629 | if (node->event) { | |
630 | spin_lock_irqsave(&drm_dev->event_lock, flags); | |
631 | file->event_space += sizeof(e->event); | |
632 | spin_unlock_irqrestore(&drm_dev->event_lock, flags); | |
633 | kfree(node->event); | |
634 | } | |
635 | err: | |
636 | g2d_put_cmdlist(g2d, node); | |
637 | return ret; | |
638 | } | |
639 | EXPORT_SYMBOL_GPL(exynos_g2d_set_cmdlist_ioctl); | |
640 | ||
641 | int exynos_g2d_exec_ioctl(struct drm_device *drm_dev, void *data, | |
642 | struct drm_file *file) | |
643 | { | |
644 | struct drm_exynos_file_private *file_priv = file->driver_priv; | |
645 | struct exynos_drm_g2d_private *g2d_priv = file_priv->g2d_priv; | |
646 | struct device *dev = g2d_priv->dev; | |
647 | struct g2d_data *g2d; | |
648 | struct drm_exynos_g2d_exec *req = data; | |
649 | struct g2d_runqueue_node *runqueue_node; | |
650 | struct list_head *run_cmdlist; | |
651 | struct list_head *event_list; | |
652 | ||
653 | if (!dev) | |
654 | return -ENODEV; | |
655 | ||
656 | g2d = dev_get_drvdata(dev); | |
657 | if (!g2d) | |
658 | return -EFAULT; | |
659 | ||
660 | runqueue_node = kmem_cache_alloc(g2d->runqueue_slab, GFP_KERNEL); | |
661 | if (!runqueue_node) { | |
662 | dev_err(dev, "failed to allocate memory\n"); | |
663 | return -ENOMEM; | |
664 | } | |
665 | run_cmdlist = &runqueue_node->run_cmdlist; | |
666 | event_list = &runqueue_node->event_list; | |
667 | INIT_LIST_HEAD(run_cmdlist); | |
668 | INIT_LIST_HEAD(event_list); | |
669 | init_completion(&runqueue_node->complete); | |
670 | runqueue_node->async = req->async; | |
671 | ||
672 | list_splice_init(&g2d_priv->inuse_cmdlist, run_cmdlist); | |
673 | list_splice_init(&g2d_priv->event_list, event_list); | |
674 | ||
675 | if (list_empty(run_cmdlist)) { | |
676 | dev_err(dev, "there is no inuse cmdlist\n"); | |
677 | kmem_cache_free(g2d->runqueue_slab, runqueue_node); | |
678 | return -EPERM; | |
679 | } | |
680 | ||
681 | mutex_lock(&g2d->runqueue_mutex); | |
682 | list_add_tail(&runqueue_node->list, &g2d->runqueue); | |
683 | if (!g2d->runqueue_node) | |
684 | g2d_exec_runqueue(g2d); | |
685 | mutex_unlock(&g2d->runqueue_mutex); | |
686 | ||
687 | if (runqueue_node->async) | |
688 | goto out; | |
689 | ||
690 | wait_for_completion(&runqueue_node->complete); | |
691 | g2d_free_runqueue_node(g2d, runqueue_node); | |
692 | ||
693 | out: | |
694 | return 0; | |
695 | } | |
696 | EXPORT_SYMBOL_GPL(exynos_g2d_exec_ioctl); | |
697 | ||
698 | static int g2d_open(struct drm_device *drm_dev, struct device *dev, | |
699 | struct drm_file *file) | |
700 | { | |
701 | struct drm_exynos_file_private *file_priv = file->driver_priv; | |
702 | struct exynos_drm_g2d_private *g2d_priv; | |
703 | ||
704 | g2d_priv = kzalloc(sizeof(*g2d_priv), GFP_KERNEL); | |
705 | if (!g2d_priv) { | |
706 | dev_err(dev, "failed to allocate g2d private data\n"); | |
707 | return -ENOMEM; | |
708 | } | |
709 | ||
710 | g2d_priv->dev = dev; | |
711 | file_priv->g2d_priv = g2d_priv; | |
712 | ||
713 | INIT_LIST_HEAD(&g2d_priv->inuse_cmdlist); | |
714 | INIT_LIST_HEAD(&g2d_priv->event_list); | |
715 | INIT_LIST_HEAD(&g2d_priv->gem_list); | |
716 | ||
717 | return 0; | |
718 | } | |
719 | ||
720 | static void g2d_close(struct drm_device *drm_dev, struct device *dev, | |
721 | struct drm_file *file) | |
722 | { | |
723 | struct drm_exynos_file_private *file_priv = file->driver_priv; | |
724 | struct exynos_drm_g2d_private *g2d_priv = file_priv->g2d_priv; | |
725 | struct g2d_data *g2d; | |
726 | struct g2d_cmdlist_node *node, *n; | |
727 | ||
728 | if (!dev) | |
729 | return; | |
730 | ||
731 | g2d = dev_get_drvdata(dev); | |
732 | if (!g2d) | |
733 | return; | |
734 | ||
735 | mutex_lock(&g2d->cmdlist_mutex); | |
736 | list_for_each_entry_safe(node, n, &g2d_priv->inuse_cmdlist, list) | |
737 | list_move_tail(&node->list, &g2d->free_cmdlist); | |
738 | mutex_unlock(&g2d->cmdlist_mutex); | |
739 | ||
740 | g2d_put_cmdlist_gem(drm_dev, file, g2d_priv->gem_nr); | |
741 | ||
742 | kfree(file_priv->g2d_priv); | |
743 | } | |
744 | ||
745 | static int __devinit g2d_probe(struct platform_device *pdev) | |
746 | { | |
747 | struct device *dev = &pdev->dev; | |
748 | struct resource *res; | |
749 | struct g2d_data *g2d; | |
750 | struct exynos_drm_subdrv *subdrv; | |
751 | int ret; | |
752 | ||
b7675933 | 753 | g2d = devm_kzalloc(&pdev->dev, sizeof(*g2d), GFP_KERNEL); |
d7f1642c JS |
754 | if (!g2d) { |
755 | dev_err(dev, "failed to allocate driver data\n"); | |
756 | return -ENOMEM; | |
757 | } | |
758 | ||
759 | g2d->runqueue_slab = kmem_cache_create("g2d_runqueue_slab", | |
760 | sizeof(struct g2d_runqueue_node), 0, 0, NULL); | |
b7675933 SK |
761 | if (!g2d->runqueue_slab) |
762 | return -ENOMEM; | |
d7f1642c JS |
763 | |
764 | g2d->dev = dev; | |
765 | ||
766 | g2d->g2d_workq = create_singlethread_workqueue("g2d"); | |
767 | if (!g2d->g2d_workq) { | |
768 | dev_err(dev, "failed to create workqueue\n"); | |
769 | ret = -EINVAL; | |
770 | goto err_destroy_slab; | |
771 | } | |
772 | ||
773 | INIT_WORK(&g2d->runqueue_work, g2d_runqueue_worker); | |
774 | INIT_LIST_HEAD(&g2d->free_cmdlist); | |
775 | INIT_LIST_HEAD(&g2d->runqueue); | |
776 | ||
777 | mutex_init(&g2d->cmdlist_mutex); | |
778 | mutex_init(&g2d->runqueue_mutex); | |
779 | ||
780 | ret = g2d_init_cmdlist(g2d); | |
781 | if (ret < 0) | |
782 | goto err_destroy_workqueue; | |
783 | ||
784 | g2d->gate_clk = clk_get(dev, "fimg2d"); | |
785 | if (IS_ERR(g2d->gate_clk)) { | |
786 | dev_err(dev, "failed to get gate clock\n"); | |
787 | ret = PTR_ERR(g2d->gate_clk); | |
788 | goto err_fini_cmdlist; | |
789 | } | |
790 | ||
791 | pm_runtime_enable(dev); | |
792 | ||
793 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
d7f1642c | 794 | |
b7675933 | 795 | g2d->regs = devm_request_and_ioremap(&pdev->dev, res); |
d7f1642c JS |
796 | if (!g2d->regs) { |
797 | dev_err(dev, "failed to remap I/O memory\n"); | |
798 | ret = -ENXIO; | |
b7675933 | 799 | goto err_put_clk; |
d7f1642c JS |
800 | } |
801 | ||
802 | g2d->irq = platform_get_irq(pdev, 0); | |
803 | if (g2d->irq < 0) { | |
804 | dev_err(dev, "failed to get irq\n"); | |
805 | ret = g2d->irq; | |
b7675933 | 806 | goto err_put_clk; |
d7f1642c JS |
807 | } |
808 | ||
b7675933 SK |
809 | ret = devm_request_irq(&pdev->dev, g2d->irq, g2d_irq_handler, 0, |
810 | "drm_g2d", g2d); | |
d7f1642c JS |
811 | if (ret < 0) { |
812 | dev_err(dev, "irq request failed\n"); | |
b7675933 | 813 | goto err_put_clk; |
d7f1642c JS |
814 | } |
815 | ||
816 | platform_set_drvdata(pdev, g2d); | |
817 | ||
818 | subdrv = &g2d->subdrv; | |
819 | subdrv->dev = dev; | |
820 | subdrv->open = g2d_open; | |
821 | subdrv->close = g2d_close; | |
822 | ||
823 | ret = exynos_drm_subdrv_register(subdrv); | |
824 | if (ret < 0) { | |
825 | dev_err(dev, "failed to register drm g2d device\n"); | |
b7675933 | 826 | goto err_put_clk; |
d7f1642c JS |
827 | } |
828 | ||
829 | dev_info(dev, "The exynos g2d(ver %d.%d) successfully probed\n", | |
830 | G2D_HW_MAJOR_VER, G2D_HW_MINOR_VER); | |
831 | ||
832 | return 0; | |
833 | ||
d7f1642c JS |
834 | err_put_clk: |
835 | pm_runtime_disable(dev); | |
836 | clk_put(g2d->gate_clk); | |
837 | err_fini_cmdlist: | |
838 | g2d_fini_cmdlist(g2d); | |
839 | err_destroy_workqueue: | |
840 | destroy_workqueue(g2d->g2d_workq); | |
841 | err_destroy_slab: | |
842 | kmem_cache_destroy(g2d->runqueue_slab); | |
d7f1642c JS |
843 | return ret; |
844 | } | |
845 | ||
846 | static int __devexit g2d_remove(struct platform_device *pdev) | |
847 | { | |
848 | struct g2d_data *g2d = platform_get_drvdata(pdev); | |
849 | ||
850 | cancel_work_sync(&g2d->runqueue_work); | |
851 | exynos_drm_subdrv_unregister(&g2d->subdrv); | |
d7f1642c JS |
852 | |
853 | while (g2d->runqueue_node) { | |
854 | g2d_free_runqueue_node(g2d, g2d->runqueue_node); | |
855 | g2d->runqueue_node = g2d_get_runqueue_node(g2d); | |
856 | } | |
857 | ||
d7f1642c JS |
858 | pm_runtime_disable(&pdev->dev); |
859 | clk_put(g2d->gate_clk); | |
860 | ||
861 | g2d_fini_cmdlist(g2d); | |
862 | destroy_workqueue(g2d->g2d_workq); | |
863 | kmem_cache_destroy(g2d->runqueue_slab); | |
d7f1642c JS |
864 | |
865 | return 0; | |
866 | } | |
867 | ||
868 | #ifdef CONFIG_PM_SLEEP | |
869 | static int g2d_suspend(struct device *dev) | |
870 | { | |
871 | struct g2d_data *g2d = dev_get_drvdata(dev); | |
872 | ||
873 | mutex_lock(&g2d->runqueue_mutex); | |
874 | g2d->suspended = true; | |
875 | mutex_unlock(&g2d->runqueue_mutex); | |
876 | ||
877 | while (g2d->runqueue_node) | |
878 | /* FIXME: good range? */ | |
879 | usleep_range(500, 1000); | |
880 | ||
881 | flush_work_sync(&g2d->runqueue_work); | |
882 | ||
883 | return 0; | |
884 | } | |
885 | ||
886 | static int g2d_resume(struct device *dev) | |
887 | { | |
888 | struct g2d_data *g2d = dev_get_drvdata(dev); | |
889 | ||
890 | g2d->suspended = false; | |
891 | g2d_exec_runqueue(g2d); | |
892 | ||
893 | return 0; | |
894 | } | |
895 | #endif | |
896 | ||
9e1355e7 | 897 | static SIMPLE_DEV_PM_OPS(g2d_pm_ops, g2d_suspend, g2d_resume); |
d7f1642c JS |
898 | |
899 | struct platform_driver g2d_driver = { | |
900 | .probe = g2d_probe, | |
901 | .remove = __devexit_p(g2d_remove), | |
902 | .driver = { | |
903 | .name = "s5p-g2d", | |
904 | .owner = THIS_MODULE, | |
905 | .pm = &g2d_pm_ops, | |
906 | }, | |
907 | }; |