2 * Copyright 2012 Red Hat Inc.
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:
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.
20 * The above copyright notice and this permission notice (including the
21 * next paragraph) shall be included in all copies or substantial portions
26 * Authors: Dave Airlie <airlied@redhat.com>
32 #include <drm/drm_fb_helper.h>
33 #include <drm/drm_crtc_helper.h>
35 #include "ast_dram_tables.h"
37 void ast_set_index_reg_mask(struct ast_private *ast,
38 uint32_t base, uint8_t index,
39 uint8_t mask, uint8_t val)
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);
47 uint8_t ast_get_index_reg(struct ast_private *ast,
48 uint32_t base, uint8_t index)
51 ast_io_write8(ast, base, index);
52 ret = ast_io_read8(ast, base + 1);
56 uint8_t ast_get_index_reg_mask(struct ast_private *ast,
57 uint32_t base, uint8_t index, uint8_t mask)
60 ast_io_write8(ast, base, index);
61 ret = ast_io_read8(ast, base + 1) & mask;
66 static int ast_detect_chip(struct drm_device *dev)
68 struct ast_private *ast = dev->dev_private;
70 if (dev->pdev->device == PCI_CHIP_AST1180) {
72 DRM_INFO("AST 1180 detected\n");
74 if (dev->pdev->revision >= 0x20) {
76 DRM_INFO("AST 2300 detected\n");
77 } else if (dev->pdev->revision >= 0x10) {
79 ast_write32(ast, 0xf004, 0x1e6e0000);
80 ast_write32(ast, 0xf000, 0x1);
82 data = ast_read32(ast, 0x1207c);
83 switch (data & 0x0300) {
86 DRM_INFO("AST 1100 detected\n");
90 DRM_INFO("AST 2200 detected\n");
94 DRM_INFO("AST 2150 detected\n");
98 DRM_INFO("AST 2100 detected\n");
101 ast->vga2_clone = false;
104 DRM_INFO("AST 2000 detected\n");
110 static int ast_get_dram_info(struct drm_device *dev)
112 struct ast_private *ast = dev->dev_private;
113 uint32_t data, data2;
114 uint32_t denum, num, div, ref_pll;
116 ast_write32(ast, 0xf004, 0x1e6e0000);
117 ast_write32(ast, 0xf000, 0x1);
120 ast_write32(ast, 0x10000, 0xfc600309);
124 } while (ast_read32(ast, 0x10000) != 0x01);
125 data = ast_read32(ast, 0x10004);
128 ast->dram_bus_width = 16;
130 ast->dram_bus_width = 32;
132 if (ast->chip == AST2300) {
133 switch (data & 0x03) {
135 ast->dram_type = AST_DRAM_512Mx16;
139 ast->dram_type = AST_DRAM_1Gx16;
142 ast->dram_type = AST_DRAM_2Gx16;
145 ast->dram_type = AST_DRAM_4Gx16;
149 switch (data & 0x0c) {
152 ast->dram_type = AST_DRAM_512Mx16;
156 ast->dram_type = AST_DRAM_1Gx16;
158 ast->dram_type = AST_DRAM_512Mx32;
161 ast->dram_type = AST_DRAM_1Gx32;
166 data = ast_read32(ast, 0x10120);
167 data2 = ast_read32(ast, 0x10170);
174 num = (data & 0x3fe0) >> 5;
175 data = (data & 0xc000) >> 14;
188 ast->mclk = ref_pll * (num + 2) / (denum + 2) * (div * 1000);
192 static void ast_user_framebuffer_destroy(struct drm_framebuffer *fb)
194 struct ast_framebuffer *ast_fb = to_ast_framebuffer(fb);
196 drm_gem_object_unreference_unlocked(ast_fb->obj);
198 drm_framebuffer_cleanup(fb);
202 static const struct drm_framebuffer_funcs ast_fb_funcs = {
203 .destroy = ast_user_framebuffer_destroy,
207 int 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)
214 drm_helper_mode_fill_fb_struct(&ast_fb->base, mode_cmd);
216 ret = drm_framebuffer_init(dev, &ast_fb->base, &ast_fb_funcs);
218 DRM_ERROR("framebuffer init failed %d\n", ret);
224 static struct drm_framebuffer *
225 ast_user_framebuffer_create(struct drm_device *dev,
226 struct drm_file *filp,
227 struct drm_mode_fb_cmd2 *mode_cmd)
229 struct drm_gem_object *obj;
230 struct ast_framebuffer *ast_fb;
233 obj = drm_gem_object_lookup(dev, filp, mode_cmd->handles[0]);
235 return ERR_PTR(-ENOENT);
237 ast_fb = kzalloc(sizeof(*ast_fb), GFP_KERNEL);
239 drm_gem_object_unreference_unlocked(obj);
240 return ERR_PTR(-ENOMEM);
243 ret = ast_framebuffer_init(dev, ast_fb, mode_cmd, obj);
245 drm_gem_object_unreference_unlocked(obj);
249 return &ast_fb->base;
252 static const struct drm_mode_config_funcs ast_mode_funcs = {
253 .fb_create = ast_user_framebuffer_create,
256 static u32 ast_get_vram_info(struct drm_device *dev)
258 struct ast_private *ast = dev->dev_private;
263 jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xaa, 0xff);
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;
270 return AST_VIDMEM_DEFAULT_SIZE;
273 int ast_driver_load(struct drm_device *dev, unsigned long flags)
275 struct ast_private *ast;
278 ast = kzalloc(sizeof(struct ast_private), GFP_KERNEL);
282 dev->dev_private = ast;
285 ast->regs = pci_iomap(dev->pdev, 1, 0);
290 ast->ioregs = pci_iomap(dev->pdev, 2, 0);
296 ast_detect_chip(dev);
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);
304 ret = ast_mm_init(ast);
308 drm_mode_config_init(dev);
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;
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;
323 dev->mode_config.max_width = 1600;
324 dev->mode_config.max_height = 1200;
327 ret = ast_mode_init(dev);
331 ret = ast_fbdev_init(dev);
338 dev->dev_private = NULL;
342 int ast_driver_unload(struct drm_device *dev)
344 struct ast_private *ast = dev->dev_private;
348 drm_mode_config_cleanup(dev);
351 pci_iounmap(dev->pdev, ast->ioregs);
352 pci_iounmap(dev->pdev, ast->regs);
357 int ast_gem_create(struct drm_device *dev,
358 u32 size, bool iskernel,
359 struct drm_gem_object **obj)
361 struct ast_bo *astbo;
366 size = roundup(size, PAGE_SIZE);
370 ret = ast_bo_create(dev, size, 0, 0, &astbo);
372 if (ret != -ERESTARTSYS)
373 DRM_ERROR("failed to allocate GEM object\n");
380 int ast_dumb_create(struct drm_file *file,
381 struct drm_device *dev,
382 struct drm_mode_create_dumb *args)
385 struct drm_gem_object *gobj;
388 args->pitch = args->width * ((args->bpp + 7) / 8);
389 args->size = args->pitch * args->height;
391 ret = ast_gem_create(dev, args->size, false,
396 ret = drm_gem_handle_create(file, gobj, &handle);
397 drm_gem_object_unreference_unlocked(gobj);
401 args->handle = handle;
405 static void ast_bo_unref(struct ast_bo **bo)
407 struct ttm_buffer_object *tbo;
418 void ast_gem_free_object(struct drm_gem_object *obj)
420 struct ast_bo *ast_bo = gem_to_ast_bo(obj);
424 ast_bo_unref(&ast_bo);
428 static inline u64 ast_bo_mmap_offset(struct ast_bo *bo)
430 return drm_vma_node_offset_addr(&bo->bo.vma_node);
433 ast_dumb_mmap_offset(struct drm_file *file,
434 struct drm_device *dev,
438 struct drm_gem_object *obj;
442 mutex_lock(&dev->struct_mutex);
443 obj = drm_gem_object_lookup(dev, file, handle);
449 bo = gem_to_ast_bo(obj);
450 *offset = ast_bo_mmap_offset(bo);
452 drm_gem_object_unreference(obj);
455 mutex_unlock(&dev->struct_mutex);