2 * Copyright 2012 Red Hat Inc.
3 * Parts based on xf86-video-ast
4 * Copyright (c) 2005 ASPEED Technology Inc.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
18 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
19 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
20 * USE OR OTHER DEALINGS IN THE SOFTWARE.
22 * The above copyright notice and this permission notice (including the
23 * next paragraph) shall be included in all copies or substantial portions
30 #include <drm/drm_gem_vram_helper.h>
31 #include <drm/drm_managed.h>
35 static void ast_cursor_fini(struct ast_private *ast)
38 struct drm_gem_vram_object *gbo;
40 for (i = 0; i < ARRAY_SIZE(ast->cursor.gbo); ++i) {
41 gbo = ast->cursor.gbo[i];
42 drm_gem_vram_unpin(gbo);
43 drm_gem_vram_put(gbo);
47 static void ast_cursor_release(struct drm_device *dev, void *ptr)
49 struct ast_private *ast = to_ast_private(dev);
55 * Allocate cursor BOs and pin them at the end of VRAM.
57 int ast_cursor_init(struct ast_private *ast)
59 struct drm_device *dev = &ast->base;
61 struct drm_gem_vram_object *gbo;
64 size = roundup(AST_HWC_SIZE + AST_HWC_SIGNATURE_SIZE, PAGE_SIZE);
66 for (i = 0; i < ARRAY_SIZE(ast->cursor.gbo); ++i) {
67 gbo = drm_gem_vram_create(dev, size, 0);
70 goto err_drm_gem_vram_put;
72 ret = drm_gem_vram_pin(gbo, DRM_GEM_VRAM_PL_FLAG_VRAM |
73 DRM_GEM_VRAM_PL_FLAG_TOPDOWN);
75 drm_gem_vram_put(gbo);
76 goto err_drm_gem_vram_put;
78 ast->cursor.gbo[i] = gbo;
81 return drmm_add_action_or_reset(dev, ast_cursor_release, NULL);
86 gbo = ast->cursor.gbo[i];
87 drm_gem_vram_unpin(gbo);
88 drm_gem_vram_put(gbo);
93 static void update_cursor_image(u8 __iomem *dst, const u8 *src, int width, int height)
98 } srcdata32[2], data32;
104 s32 alpha_dst_delta, last_alpha_dst_delta;
108 u32 per_pixel_copy, two_pixel_copy;
110 alpha_dst_delta = AST_MAX_HWC_WIDTH << 1;
111 last_alpha_dst_delta = alpha_dst_delta - (width << 1);
114 dstxor = (u8 *)dst + last_alpha_dst_delta + (AST_MAX_HWC_HEIGHT - height) * alpha_dst_delta;
115 per_pixel_copy = width & 1;
116 two_pixel_copy = width >> 1;
118 for (j = 0; j < height; j++) {
119 for (i = 0; i < two_pixel_copy; i++) {
120 srcdata32[0].ul = *((u32 *)srcxor) & 0xf0f0f0f0;
121 srcdata32[1].ul = *((u32 *)(srcxor + 4)) & 0xf0f0f0f0;
122 data32.b[0] = srcdata32[0].b[1] | (srcdata32[0].b[0] >> 4);
123 data32.b[1] = srcdata32[0].b[3] | (srcdata32[0].b[2] >> 4);
124 data32.b[2] = srcdata32[1].b[1] | (srcdata32[1].b[0] >> 4);
125 data32.b[3] = srcdata32[1].b[3] | (srcdata32[1].b[2] >> 4);
127 writel(data32.ul, dstxor);
135 for (i = 0; i < per_pixel_copy; i++) {
136 srcdata32[0].ul = *((u32 *)srcxor) & 0xf0f0f0f0;
137 data16.b[0] = srcdata32[0].b[1] | (srcdata32[0].b[0] >> 4);
138 data16.b[1] = srcdata32[0].b[3] | (srcdata32[0].b[2] >> 4);
139 writew(data16.us, dstxor);
140 csum += (u32)data16.us;
145 dstxor += last_alpha_dst_delta;
148 /* write checksum + signature */
151 writel(width, dst + AST_HWC_SIGNATURE_SizeX);
152 writel(height, dst + AST_HWC_SIGNATURE_SizeY);
153 writel(0, dst + AST_HWC_SIGNATURE_HOTSPOTX);
154 writel(0, dst + AST_HWC_SIGNATURE_HOTSPOTY);
157 int ast_cursor_blit(struct ast_private *ast, struct drm_framebuffer *fb)
159 struct drm_device *dev = &ast->base;
160 struct drm_gem_vram_object *dst_gbo = ast->cursor.gbo[ast->cursor.next_index];
161 struct drm_gem_vram_object *src_gbo = drm_gem_vram_of_gem(fb->obj[0]);
162 struct dma_buf_map src_map, dst_map;
167 if (drm_WARN_ON_ONCE(dev, fb->width > AST_MAX_HWC_WIDTH) ||
168 drm_WARN_ON_ONCE(dev, fb->height > AST_MAX_HWC_HEIGHT))
171 ret = drm_gem_vram_vmap(src_gbo, &src_map);
174 src = src_map.vaddr; /* TODO: Use mapping abstraction properly */
176 ret = drm_gem_vram_vmap(dst_gbo, &dst_map);
178 goto err_drm_gem_vram_vunmap;
179 dst = dst_map.vaddr_iomem; /* TODO: Use mapping abstraction properly */
181 /* do data transfer to cursor BO */
182 update_cursor_image(dst, src, fb->width, fb->height);
184 drm_gem_vram_vunmap(dst_gbo, &dst_map);
185 drm_gem_vram_vunmap(src_gbo, &src_map);
189 err_drm_gem_vram_vunmap:
190 drm_gem_vram_vunmap(src_gbo, &src_map);
194 static void ast_cursor_set_base(struct ast_private *ast, u64 address)
196 u8 addr0 = (address >> 3) & 0xff;
197 u8 addr1 = (address >> 11) & 0xff;
198 u8 addr2 = (address >> 19) & 0xff;
200 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc8, addr0);
201 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc9, addr1);
202 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xca, addr2);
205 void ast_cursor_page_flip(struct ast_private *ast)
207 struct drm_device *dev = &ast->base;
208 struct drm_gem_vram_object *gbo;
211 gbo = ast->cursor.gbo[ast->cursor.next_index];
213 off = drm_gem_vram_offset(gbo);
214 if (drm_WARN_ON_ONCE(dev, off < 0))
215 return; /* Bug: we didn't pin the cursor HW BO to VRAM. */
217 ast_cursor_set_base(ast, off);
219 ++ast->cursor.next_index;
220 ast->cursor.next_index %= ARRAY_SIZE(ast->cursor.gbo);
223 static void ast_cursor_set_location(struct ast_private *ast, u16 x, u16 y,
224 u8 x_offset, u8 y_offset)
226 u8 x0 = (x & 0x00ff);
227 u8 x1 = (x & 0x0f00) >> 8;
228 u8 y0 = (y & 0x00ff);
229 u8 y1 = (y & 0x0700) >> 8;
231 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc2, x_offset);
232 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc3, y_offset);
233 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc4, x0);
234 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc5, x1);
235 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc6, y0);
236 ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc7, y1);
239 void ast_cursor_show(struct ast_private *ast, int x, int y,
240 unsigned int offset_x, unsigned int offset_y)
242 struct drm_device *dev = &ast->base;
243 struct drm_gem_vram_object *gbo = ast->cursor.gbo[ast->cursor.next_index];
244 struct dma_buf_map map;
245 u8 x_offset, y_offset;
251 ret = drm_gem_vram_vmap(gbo, &map);
252 if (drm_WARN_ONCE(dev, ret, "drm_gem_vram_vmap() failed, ret=%d\n", ret))
254 dst = map.vaddr_iomem; /* TODO: Use mapping abstraction properly */
256 sig = dst + AST_HWC_SIZE;
257 writel(x, sig + AST_HWC_SIGNATURE_X);
258 writel(y, sig + AST_HWC_SIGNATURE_Y);
260 drm_gem_vram_vunmap(gbo, &map);
263 x_offset = (-x) + offset_x;
269 y_offset = (-y) + offset_y;
275 ast_cursor_set_location(ast, x, y, x_offset, y_offset);
277 /* dummy write to fire HWC */
279 0x01; /* enable ARGB4444 cursor */
280 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xcb, 0xfc, jreg);
283 void ast_cursor_hide(struct ast_private *ast)
285 ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xcb, 0xfc, 0x00);