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1/*
2 * Copyright 2012 Red Hat Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the
6 * "Software"), to deal in the Software without restriction, including
7 * without limitation the rights to use, copy, modify, merge, publish,
8 * distribute, sub license, and/or sell copies of the Software, and to
9 * permit persons to whom the Software is furnished to do so, subject to
10 * the following conditions:
11 *
12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
13 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
14 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
15 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
16 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
17 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
18 * USE OR OTHER DEALINGS IN THE SOFTWARE.
19 *
20 * The above copyright notice and this permission notice (including the
21 * next paragraph) shall be included in all copies or substantial portions
22 * of the Software.
23 *
24 */
25/*
26 * Authors: Dave Airlie <airlied@redhat.com>
27 */
28#include <drm/drmP.h>
29#include "ast_drv.h"
30
31
32#include <drm/drm_fb_helper.h>
33#include <drm/drm_crtc_helper.h>
34
35#include "ast_dram_tables.h"
36
37void ast_set_index_reg_mask(struct ast_private *ast,
38 uint32_t base, uint8_t index,
39 uint8_t mask, uint8_t val)
40{
41 u8 tmp;
42 ast_io_write8(ast, base, index);
43 tmp = (ast_io_read8(ast, base + 1) & mask) | val;
44 ast_set_index_reg(ast, base, index, tmp);
45}
46
47uint8_t ast_get_index_reg(struct ast_private *ast,
48 uint32_t base, uint8_t index)
49{
50 uint8_t ret;
51 ast_io_write8(ast, base, index);
52 ret = ast_io_read8(ast, base + 1);
53 return ret;
54}
55
56uint8_t ast_get_index_reg_mask(struct ast_private *ast,
57 uint32_t base, uint8_t index, uint8_t mask)
58{
59 uint8_t ret;
60 ast_io_write8(ast, base, index);
61 ret = ast_io_read8(ast, base + 1) & mask;
62 return ret;
63}
64
65
66static int ast_detect_chip(struct drm_device *dev)
67{
68 struct ast_private *ast = dev->dev_private;
69
70 if (dev->pdev->device == PCI_CHIP_AST1180) {
71 ast->chip = AST1100;
72 DRM_INFO("AST 1180 detected\n");
73 } else {
74 if (dev->pdev->revision >= 0x20) {
75 ast->chip = AST2300;
76 DRM_INFO("AST 2300 detected\n");
77 } else if (dev->pdev->revision >= 0x10) {
78 uint32_t data;
79 ast_write32(ast, 0xf004, 0x1e6e0000);
80 ast_write32(ast, 0xf000, 0x1);
81
82 data = ast_read32(ast, 0x1207c);
83 switch (data & 0x0300) {
84 case 0x0200:
85 ast->chip = AST1100;
86 DRM_INFO("AST 1100 detected\n");
87 break;
88 case 0x0100:
89 ast->chip = AST2200;
90 DRM_INFO("AST 2200 detected\n");
91 break;
92 case 0x0000:
93 ast->chip = AST2150;
94 DRM_INFO("AST 2150 detected\n");
95 break;
96 default:
97 ast->chip = AST2100;
98 DRM_INFO("AST 2100 detected\n");
99 break;
100 }
101 ast->vga2_clone = false;
102 } else {
103 ast->chip = 2000;
104 DRM_INFO("AST 2000 detected\n");
105 }
106 }
107 return 0;
108}
109
110static int ast_get_dram_info(struct drm_device *dev)
111{
112 struct ast_private *ast = dev->dev_private;
113 uint32_t data, data2;
114 uint32_t denum, num, div, ref_pll;
115
116 ast_write32(ast, 0xf004, 0x1e6e0000);
117 ast_write32(ast, 0xf000, 0x1);
118
119
120 ast_write32(ast, 0x10000, 0xfc600309);
121
122 do {
123 ;
124 } while (ast_read32(ast, 0x10000) != 0x01);
125 data = ast_read32(ast, 0x10004);
126
127 if (data & 0x400)
128 ast->dram_bus_width = 16;
129 else
130 ast->dram_bus_width = 32;
131
132 if (ast->chip == AST2300) {
133 switch (data & 0x03) {
134 case 0:
135 ast->dram_type = AST_DRAM_512Mx16;
136 break;
137 default:
138 case 1:
139 ast->dram_type = AST_DRAM_1Gx16;
140 break;
141 case 2:
142 ast->dram_type = AST_DRAM_2Gx16;
143 break;
144 case 3:
145 ast->dram_type = AST_DRAM_4Gx16;
146 break;
147 }
148 } else {
149 switch (data & 0x0c) {
150 case 0:
151 case 4:
152 ast->dram_type = AST_DRAM_512Mx16;
153 break;
154 case 8:
155 if (data & 0x40)
156 ast->dram_type = AST_DRAM_1Gx16;
157 else
158 ast->dram_type = AST_DRAM_512Mx32;
159 break;
160 case 0xc:
161 ast->dram_type = AST_DRAM_1Gx32;
162 break;
163 }
164 }
165
166 data = ast_read32(ast, 0x10120);
167 data2 = ast_read32(ast, 0x10170);
168 if (data2 & 0x2000)
169 ref_pll = 14318;
170 else
171 ref_pll = 12000;
172
173 denum = data & 0x1f;
174 num = (data & 0x3fe0) >> 5;
175 data = (data & 0xc000) >> 14;
176 switch (data) {
177 case 3:
178 div = 0x4;
179 break;
180 case 2:
181 case 1:
182 div = 0x2;
183 break;
184 default:
185 div = 0x1;
186 break;
187 }
188 ast->mclk = ref_pll * (num + 2) / (denum + 2) * (div * 1000);
189 return 0;
190}
191
192static void ast_user_framebuffer_destroy(struct drm_framebuffer *fb)
193{
194 struct ast_framebuffer *ast_fb = to_ast_framebuffer(fb);
195 if (ast_fb->obj)
196 drm_gem_object_unreference_unlocked(ast_fb->obj);
197
198 drm_framebuffer_cleanup(fb);
199 kfree(fb);
200}
201
202static const struct drm_framebuffer_funcs ast_fb_funcs = {
203 .destroy = ast_user_framebuffer_destroy,
204};
205
206
207int ast_framebuffer_init(struct drm_device *dev,
208 struct ast_framebuffer *ast_fb,
209 struct drm_mode_fb_cmd2 *mode_cmd,
210 struct drm_gem_object *obj)
211{
212 int ret;
213
214 drm_helper_mode_fill_fb_struct(&ast_fb->base, mode_cmd);
215 ast_fb->obj = obj;
216 ret = drm_framebuffer_init(dev, &ast_fb->base, &ast_fb_funcs);
217 if (ret) {
218 DRM_ERROR("framebuffer init failed %d\n", ret);
219 return ret;
220 }
221 return 0;
222}
223
224static struct drm_framebuffer *
225ast_user_framebuffer_create(struct drm_device *dev,
226 struct drm_file *filp,
227 struct drm_mode_fb_cmd2 *mode_cmd)
228{
229 struct drm_gem_object *obj;
230 struct ast_framebuffer *ast_fb;
231 int ret;
232
233 obj = drm_gem_object_lookup(dev, filp, mode_cmd->handles[0]);
234 if (obj == NULL)
235 return ERR_PTR(-ENOENT);
236
237 ast_fb = kzalloc(sizeof(*ast_fb), GFP_KERNEL);
238 if (!ast_fb) {
239 drm_gem_object_unreference_unlocked(obj);
240 return ERR_PTR(-ENOMEM);
241 }
242
243 ret = ast_framebuffer_init(dev, ast_fb, mode_cmd, obj);
244 if (ret) {
245 drm_gem_object_unreference_unlocked(obj);
246 kfree(ast_fb);
247 return ERR_PTR(ret);
248 }
249 return &ast_fb->base;
250}
251
252static const struct drm_mode_config_funcs ast_mode_funcs = {
253 .fb_create = ast_user_framebuffer_create,
254};
255
256static u32 ast_get_vram_info(struct drm_device *dev)
257{
258 struct ast_private *ast = dev->dev_private;
259 u8 jreg;
260
261 ast_open_key(ast);
262
263 jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xaa, 0xff);
264 switch (jreg & 3) {
265 case 0: return AST_VIDMEM_SIZE_8M;
266 case 1: return AST_VIDMEM_SIZE_16M;
267 case 2: return AST_VIDMEM_SIZE_32M;
268 case 3: return AST_VIDMEM_SIZE_64M;
269 }
270 return AST_VIDMEM_DEFAULT_SIZE;
271}
272
273int ast_driver_load(struct drm_device *dev, unsigned long flags)
274{
275 struct ast_private *ast;
276 int ret = 0;
277
278 ast = kzalloc(sizeof(struct ast_private), GFP_KERNEL);
279 if (!ast)
280 return -ENOMEM;
281
282 dev->dev_private = ast;
283 ast->dev = dev;
284
285 ast->regs = pci_iomap(dev->pdev, 1, 0);
286 if (!ast->regs) {
287 ret = -EIO;
288 goto out_free;
289 }
290 ast->ioregs = pci_iomap(dev->pdev, 2, 0);
291 if (!ast->ioregs) {
292 ret = -EIO;
293 goto out_free;
294 }
295
296 ast_detect_chip(dev);
297
298 if (ast->chip != AST1180) {
299 ast_get_dram_info(dev);
300 ast->vram_size = ast_get_vram_info(dev);
301 DRM_INFO("dram %d %d %d %08x\n", ast->mclk, ast->dram_type, ast->dram_bus_width, ast->vram_size);
302 }
303
304 ret = ast_mm_init(ast);
305 if (ret)
306 goto out_free;
307
308 drm_mode_config_init(dev);
309
310 dev->mode_config.funcs = (void *)&ast_mode_funcs;
311 dev->mode_config.min_width = 0;
312 dev->mode_config.min_height = 0;
313 dev->mode_config.preferred_depth = 24;
314 dev->mode_config.prefer_shadow = 1;
315
316 if (ast->chip == AST2100 ||
317 ast->chip == AST2200 ||
318 ast->chip == AST2300 ||
319 ast->chip == AST1180) {
320 dev->mode_config.max_width = 1920;
321 dev->mode_config.max_height = 2048;
322 } else {
323 dev->mode_config.max_width = 1600;
324 dev->mode_config.max_height = 1200;
325 }
326
327 ret = ast_mode_init(dev);
328 if (ret)
329 goto out_free;
330
331 ret = ast_fbdev_init(dev);
332 if (ret)
333 goto out_free;
334
335 return 0;
336out_free:
337 kfree(ast);
338 dev->dev_private = NULL;
339 return ret;
340}
341
342int ast_driver_unload(struct drm_device *dev)
343{
344 struct ast_private *ast = dev->dev_private;
345
346 ast_mode_fini(dev);
347 ast_fbdev_fini(dev);
348 drm_mode_config_cleanup(dev);
349
350 ast_mm_fini(ast);
351 pci_iounmap(dev->pdev, ast->ioregs);
352 pci_iounmap(dev->pdev, ast->regs);
353 kfree(ast);
354 return 0;
355}
356
357int ast_gem_create(struct drm_device *dev,
358 u32 size, bool iskernel,
359 struct drm_gem_object **obj)
360{
361 struct ast_bo *astbo;
362 int ret;
363
364 *obj = NULL;
365
366 size = roundup(size, PAGE_SIZE);
367 if (size == 0)
368 return -EINVAL;
369
370 ret = ast_bo_create(dev, size, 0, 0, &astbo);
371 if (ret) {
372 if (ret != -ERESTARTSYS)
373 DRM_ERROR("failed to allocate GEM object\n");
374 return ret;
375 }
376 *obj = &astbo->gem;
377 return 0;
378}
379
380int ast_dumb_create(struct drm_file *file,
381 struct drm_device *dev,
382 struct drm_mode_create_dumb *args)
383{
384 int ret;
385 struct drm_gem_object *gobj;
386 u32 handle;
387
388 args->pitch = args->width * ((args->bpp + 7) / 8);
389 args->size = args->pitch * args->height;
390
391 ret = ast_gem_create(dev, args->size, false,
392 &gobj);
393 if (ret)
394 return ret;
395
396 ret = drm_gem_handle_create(file, gobj, &handle);
397 drm_gem_object_unreference_unlocked(gobj);
398 if (ret)
399 return ret;
400
401 args->handle = handle;
402 return 0;
403}
404
405static void ast_bo_unref(struct ast_bo **bo)
406{
407 struct ttm_buffer_object *tbo;
408
409 if ((*bo) == NULL)
410 return;
411
412 tbo = &((*bo)->bo);
413 ttm_bo_unref(&tbo);
414 if (tbo == NULL)
415 *bo = NULL;
416
417}
418void ast_gem_free_object(struct drm_gem_object *obj)
419{
420 struct ast_bo *ast_bo = gem_to_ast_bo(obj);
421
422 if (!ast_bo)
423 return;
424 ast_bo_unref(&ast_bo);
425}
426
427
428static inline u64 ast_bo_mmap_offset(struct ast_bo *bo)
429{
430 return drm_vma_node_offset_addr(&bo->bo.vma_node);
431}
432int
433ast_dumb_mmap_offset(struct drm_file *file,
434 struct drm_device *dev,
435 uint32_t handle,
436 uint64_t *offset)
437{
438 struct drm_gem_object *obj;
439 int ret;
440 struct ast_bo *bo;
441
442 mutex_lock(&dev->struct_mutex);
443 obj = drm_gem_object_lookup(dev, file, handle);
444 if (obj == NULL) {
445 ret = -ENOENT;
446 goto out_unlock;
447 }
448
449 bo = gem_to_ast_bo(obj);
450 *offset = ast_bo_mmap_offset(bo);
451
452 drm_gem_object_unreference(obj);
453 ret = 0;
454out_unlock:
455 mutex_unlock(&dev->struct_mutex);
456 return ret;
457
458}
459