root / hw / milkymist-tmu2.c @ d2d979c6
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1 | 0670dadd | Michael Walle | /*
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2 | 0670dadd | Michael Walle | * QEMU model of the Milkymist texture mapping unit.
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3 | 0670dadd | Michael Walle | *
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4 | 0670dadd | Michael Walle | * Copyright (c) 2010 Michael Walle <michael@walle.cc>
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5 | 0670dadd | Michael Walle | * Copyright (c) 2010 Sebastien Bourdeauducq
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6 | 0670dadd | Michael Walle | * <sebastien.bourdeauducq@lekernel.net>
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7 | 0670dadd | Michael Walle | *
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8 | 0670dadd | Michael Walle | * This library is free software; you can redistribute it and/or
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9 | 0670dadd | Michael Walle | * modify it under the terms of the GNU Lesser General Public
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10 | 0670dadd | Michael Walle | * License as published by the Free Software Foundation; either
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11 | 0670dadd | Michael Walle | * version 2 of the License, or (at your option) any later version.
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12 | 0670dadd | Michael Walle | *
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13 | 0670dadd | Michael Walle | * This library is distributed in the hope that it will be useful,
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14 | 0670dadd | Michael Walle | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 | 0670dadd | Michael Walle | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 | 0670dadd | Michael Walle | * Lesser General Public License for more details.
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17 | 0670dadd | Michael Walle | *
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18 | 0670dadd | Michael Walle | * You should have received a copy of the GNU Lesser General Public
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19 | 0670dadd | Michael Walle | * License along with this library; if not, see <http://www.gnu.org/licenses/>.
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20 | 0670dadd | Michael Walle | *
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21 | 0670dadd | Michael Walle | *
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22 | 0670dadd | Michael Walle | * Specification available at:
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23 | 0670dadd | Michael Walle | * http://www.milkymist.org/socdoc/tmu2.pdf
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24 | 0670dadd | Michael Walle | *
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25 | 0670dadd | Michael Walle | */
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26 | 0670dadd | Michael Walle | |
27 | 0670dadd | Michael Walle | #include "hw.h" |
28 | 0670dadd | Michael Walle | #include "sysbus.h" |
29 | 0670dadd | Michael Walle | #include "trace.h" |
30 | 0670dadd | Michael Walle | #include "qemu-error.h" |
31 | 0670dadd | Michael Walle | |
32 | 0670dadd | Michael Walle | #include <X11/Xlib.h> |
33 | 0670dadd | Michael Walle | #include <GL/gl.h> |
34 | 0670dadd | Michael Walle | #include <GL/glx.h> |
35 | 0670dadd | Michael Walle | |
36 | 0670dadd | Michael Walle | enum {
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37 | 0670dadd | Michael Walle | R_CTL = 0,
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38 | 0670dadd | Michael Walle | R_HMESHLAST, |
39 | 0670dadd | Michael Walle | R_VMESHLAST, |
40 | 0670dadd | Michael Walle | R_BRIGHTNESS, |
41 | 0670dadd | Michael Walle | R_CHROMAKEY, |
42 | 0670dadd | Michael Walle | R_VERTICESADDR, |
43 | 0670dadd | Michael Walle | R_TEXFBUF, |
44 | 0670dadd | Michael Walle | R_TEXHRES, |
45 | 0670dadd | Michael Walle | R_TEXVRES, |
46 | 0670dadd | Michael Walle | R_TEXHMASK, |
47 | 0670dadd | Michael Walle | R_TEXVMASK, |
48 | 0670dadd | Michael Walle | R_DSTFBUF, |
49 | 0670dadd | Michael Walle | R_DSTHRES, |
50 | 0670dadd | Michael Walle | R_DSTVRES, |
51 | 0670dadd | Michael Walle | R_DSTHOFFSET, |
52 | 0670dadd | Michael Walle | R_DSTVOFFSET, |
53 | 0670dadd | Michael Walle | R_DSTSQUAREW, |
54 | 0670dadd | Michael Walle | R_DSTSQUAREH, |
55 | 0670dadd | Michael Walle | R_ALPHA, |
56 | 0670dadd | Michael Walle | R_MAX |
57 | 0670dadd | Michael Walle | }; |
58 | 0670dadd | Michael Walle | |
59 | 0670dadd | Michael Walle | enum {
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60 | 0670dadd | Michael Walle | CTL_START_BUSY = (1<<0), |
61 | 0670dadd | Michael Walle | CTL_CHROMAKEY = (1<<1), |
62 | 0670dadd | Michael Walle | }; |
63 | 0670dadd | Michael Walle | |
64 | 0670dadd | Michael Walle | enum {
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65 | 0670dadd | Michael Walle | MAX_BRIGHTNESS = 63,
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66 | 0670dadd | Michael Walle | MAX_ALPHA = 63,
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67 | 0670dadd | Michael Walle | }; |
68 | 0670dadd | Michael Walle | |
69 | 0670dadd | Michael Walle | enum {
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70 | 0670dadd | Michael Walle | MESH_MAXSIZE = 128,
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71 | 0670dadd | Michael Walle | }; |
72 | 0670dadd | Michael Walle | |
73 | 0670dadd | Michael Walle | struct vertex {
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74 | 0670dadd | Michael Walle | int x;
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75 | 0670dadd | Michael Walle | int y;
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76 | 0670dadd | Michael Walle | } __attribute__((packed)); |
77 | 0670dadd | Michael Walle | |
78 | 0670dadd | Michael Walle | struct MilkymistTMU2State {
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79 | 0670dadd | Michael Walle | SysBusDevice busdev; |
80 | 0670dadd | Michael Walle | CharDriverState *chr; |
81 | 0670dadd | Michael Walle | qemu_irq irq; |
82 | 0670dadd | Michael Walle | |
83 | 0670dadd | Michael Walle | uint32_t regs[R_MAX]; |
84 | 0670dadd | Michael Walle | |
85 | 0670dadd | Michael Walle | Display *dpy; |
86 | 0670dadd | Michael Walle | GLXFBConfig glx_fb_config; |
87 | 0670dadd | Michael Walle | GLXContext glx_context; |
88 | 0670dadd | Michael Walle | }; |
89 | 0670dadd | Michael Walle | typedef struct MilkymistTMU2State MilkymistTMU2State; |
90 | 0670dadd | Michael Walle | |
91 | 0670dadd | Michael Walle | static const int glx_fbconfig_attr[] = { |
92 | 0670dadd | Michael Walle | GLX_GREEN_SIZE, 5,
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93 | 0670dadd | Michael Walle | GLX_GREEN_SIZE, 6,
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94 | 0670dadd | Michael Walle | GLX_BLUE_SIZE, 5,
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95 | 0670dadd | Michael Walle | None |
96 | 0670dadd | Michael Walle | }; |
97 | 0670dadd | Michael Walle | |
98 | 0670dadd | Michael Walle | static int tmu2_glx_init(MilkymistTMU2State *s) |
99 | 0670dadd | Michael Walle | { |
100 | 0670dadd | Michael Walle | GLXFBConfig *configs; |
101 | 0670dadd | Michael Walle | int nelements;
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102 | 0670dadd | Michael Walle | |
103 | 0670dadd | Michael Walle | s->dpy = XOpenDisplay(NULL); /* FIXME: call XCloseDisplay() */ |
104 | 0670dadd | Michael Walle | if (s->dpy == NULL) { |
105 | 0670dadd | Michael Walle | return 1; |
106 | 0670dadd | Michael Walle | } |
107 | 0670dadd | Michael Walle | |
108 | 0670dadd | Michael Walle | configs = glXChooseFBConfig(s->dpy, 0, glx_fbconfig_attr, &nelements);
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109 | 0670dadd | Michael Walle | if (configs == NULL) { |
110 | 0670dadd | Michael Walle | return 1; |
111 | 0670dadd | Michael Walle | } |
112 | 0670dadd | Michael Walle | |
113 | 0670dadd | Michael Walle | s->glx_fb_config = *configs; |
114 | 0670dadd | Michael Walle | XFree(configs); |
115 | 0670dadd | Michael Walle | |
116 | 0670dadd | Michael Walle | /* FIXME: call glXDestroyContext() */
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117 | 0670dadd | Michael Walle | s->glx_context = glXCreateNewContext(s->dpy, s->glx_fb_config, |
118 | 0670dadd | Michael Walle | GLX_RGBA_TYPE, NULL, 1); |
119 | 0670dadd | Michael Walle | if (s->glx_context == NULL) { |
120 | 0670dadd | Michael Walle | return 1; |
121 | 0670dadd | Michael Walle | } |
122 | 0670dadd | Michael Walle | |
123 | 0670dadd | Michael Walle | return 0; |
124 | 0670dadd | Michael Walle | } |
125 | 0670dadd | Michael Walle | |
126 | 0670dadd | Michael Walle | static void tmu2_gl_map(struct vertex *mesh, int texhres, int texvres, |
127 | 0670dadd | Michael Walle | int hmeshlast, int vmeshlast, int ho, int vo, int sw, int sh) |
128 | 0670dadd | Michael Walle | { |
129 | 0670dadd | Michael Walle | int x, y;
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130 | 0670dadd | Michael Walle | int x0, y0, x1, y1;
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131 | 0670dadd | Michael Walle | int u0, v0, u1, v1, u2, v2, u3, v3;
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132 | 0670dadd | Michael Walle | double xscale = 1.0 / ((double)(64 * texhres)); |
133 | 0670dadd | Michael Walle | double yscale = 1.0 / ((double)(64 * texvres)); |
134 | 0670dadd | Michael Walle | |
135 | 0670dadd | Michael Walle | glLoadIdentity(); |
136 | 0670dadd | Michael Walle | glTranslatef(ho, vo, 0);
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137 | 0670dadd | Michael Walle | glEnable(GL_TEXTURE_2D); |
138 | 0670dadd | Michael Walle | glBegin(GL_QUADS); |
139 | 0670dadd | Michael Walle | |
140 | 0670dadd | Michael Walle | for (y = 0; y < vmeshlast; y++) { |
141 | 0670dadd | Michael Walle | y0 = y * sh; |
142 | 0670dadd | Michael Walle | y1 = y0 + sh; |
143 | 0670dadd | Michael Walle | for (x = 0; x < hmeshlast; x++) { |
144 | 0670dadd | Michael Walle | x0 = x * sw; |
145 | 0670dadd | Michael Walle | x1 = x0 + sw; |
146 | 0670dadd | Michael Walle | |
147 | 0670dadd | Michael Walle | u0 = be32_to_cpu(mesh[MESH_MAXSIZE * y + x].x); |
148 | 0670dadd | Michael Walle | v0 = be32_to_cpu(mesh[MESH_MAXSIZE * y + x].y); |
149 | 0670dadd | Michael Walle | u1 = be32_to_cpu(mesh[MESH_MAXSIZE * y + x + 1].x);
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150 | 0670dadd | Michael Walle | v1 = be32_to_cpu(mesh[MESH_MAXSIZE * y + x + 1].y);
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151 | 0670dadd | Michael Walle | u2 = be32_to_cpu(mesh[MESH_MAXSIZE * (y + 1) + x + 1].x); |
152 | 0670dadd | Michael Walle | v2 = be32_to_cpu(mesh[MESH_MAXSIZE * (y + 1) + x + 1].y); |
153 | 0670dadd | Michael Walle | u3 = be32_to_cpu(mesh[MESH_MAXSIZE * (y + 1) + x].x);
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154 | 0670dadd | Michael Walle | v3 = be32_to_cpu(mesh[MESH_MAXSIZE * (y + 1) + x].y);
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155 | 0670dadd | Michael Walle | |
156 | 0670dadd | Michael Walle | glTexCoord2d(((double)u0) * xscale, ((double)v0) * yscale); |
157 | 0670dadd | Michael Walle | glVertex3i(x0, y0, 0);
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158 | 0670dadd | Michael Walle | glTexCoord2d(((double)u1) * xscale, ((double)v1) * yscale); |
159 | 0670dadd | Michael Walle | glVertex3i(x1, y0, 0);
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160 | 0670dadd | Michael Walle | glTexCoord2d(((double)u2) * xscale, ((double)v2) * yscale); |
161 | 0670dadd | Michael Walle | glVertex3i(x1, y1, 0);
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162 | 0670dadd | Michael Walle | glTexCoord2d(((double)u3) * xscale, ((double)v3) * yscale); |
163 | 0670dadd | Michael Walle | glVertex3i(x0, y1, 0);
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164 | 0670dadd | Michael Walle | } |
165 | 0670dadd | Michael Walle | } |
166 | 0670dadd | Michael Walle | |
167 | 0670dadd | Michael Walle | glEnd(); |
168 | 0670dadd | Michael Walle | } |
169 | 0670dadd | Michael Walle | |
170 | 0670dadd | Michael Walle | static void tmu2_start(MilkymistTMU2State *s) |
171 | 0670dadd | Michael Walle | { |
172 | 0670dadd | Michael Walle | int pbuffer_attrib[6] = { |
173 | 0670dadd | Michael Walle | GLX_PBUFFER_WIDTH, |
174 | 0670dadd | Michael Walle | 0,
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175 | 0670dadd | Michael Walle | GLX_PBUFFER_HEIGHT, |
176 | 0670dadd | Michael Walle | 0,
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177 | 0670dadd | Michael Walle | GLX_PRESERVED_CONTENTS, |
178 | 0670dadd | Michael Walle | True |
179 | 0670dadd | Michael Walle | }; |
180 | 0670dadd | Michael Walle | |
181 | 0670dadd | Michael Walle | GLXPbuffer pbuffer; |
182 | 0670dadd | Michael Walle | GLuint texture; |
183 | 0670dadd | Michael Walle | void *fb;
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184 | 0670dadd | Michael Walle | target_phys_addr_t fb_len; |
185 | 0670dadd | Michael Walle | void *mesh;
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186 | 0670dadd | Michael Walle | target_phys_addr_t mesh_len; |
187 | 0670dadd | Michael Walle | float m;
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188 | 0670dadd | Michael Walle | |
189 | 0670dadd | Michael Walle | trace_milkymist_tmu2_start(); |
190 | 0670dadd | Michael Walle | |
191 | 0670dadd | Michael Walle | /* Create and set up a suitable OpenGL context */
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192 | 0670dadd | Michael Walle | pbuffer_attrib[1] = s->regs[R_DSTHRES];
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193 | 0670dadd | Michael Walle | pbuffer_attrib[3] = s->regs[R_DSTVRES];
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194 | 0670dadd | Michael Walle | pbuffer = glXCreatePbuffer(s->dpy, s->glx_fb_config, pbuffer_attrib); |
195 | 0670dadd | Michael Walle | glXMakeContextCurrent(s->dpy, pbuffer, pbuffer, s->glx_context); |
196 | 0670dadd | Michael Walle | |
197 | 0670dadd | Michael Walle | /* Fixup endianness. TODO: would it work on BE hosts? */
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198 | 0670dadd | Michael Walle | glPixelStorei(GL_UNPACK_SWAP_BYTES, 1);
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199 | 0670dadd | Michael Walle | glPixelStorei(GL_PACK_SWAP_BYTES, 1);
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200 | 0670dadd | Michael Walle | |
201 | 0670dadd | Michael Walle | /* Row alignment */
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202 | 0670dadd | Michael Walle | glPixelStorei(GL_UNPACK_ALIGNMENT, 2);
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203 | 0670dadd | Michael Walle | glPixelStorei(GL_PACK_ALIGNMENT, 2);
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204 | 0670dadd | Michael Walle | |
205 | 0670dadd | Michael Walle | /* Read the QEMU source framebuffer into an OpenGL texture */
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206 | 0670dadd | Michael Walle | glGenTextures(1, &texture);
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207 | 0670dadd | Michael Walle | glBindTexture(GL_TEXTURE_2D, texture); |
208 | 0670dadd | Michael Walle | fb_len = 2*s->regs[R_TEXHRES]*s->regs[R_TEXVRES];
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209 | 0670dadd | Michael Walle | fb = cpu_physical_memory_map(s->regs[R_TEXFBUF], &fb_len, 0);
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210 | 0670dadd | Michael Walle | if (fb == NULL) { |
211 | 0670dadd | Michael Walle | glDeleteTextures(1, &texture);
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212 | 0670dadd | Michael Walle | glXMakeContextCurrent(s->dpy, None, None, NULL);
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213 | 0670dadd | Michael Walle | glXDestroyPbuffer(s->dpy, pbuffer); |
214 | 0670dadd | Michael Walle | return;
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215 | 0670dadd | Michael Walle | } |
216 | 0670dadd | Michael Walle | glTexImage2D(GL_TEXTURE_2D, 0, 3, s->regs[R_TEXHRES], s->regs[R_TEXVRES], |
217 | 0670dadd | Michael Walle | 0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, fb);
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218 | 0670dadd | Michael Walle | cpu_physical_memory_unmap(fb, fb_len, 0, fb_len);
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219 | 0670dadd | Michael Walle | |
220 | 0670dadd | Michael Walle | /* Set up texturing options */
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221 | 0670dadd | Michael Walle | /* WARNING:
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222 | 0670dadd | Michael Walle | * Many cases of TMU2 masking are not supported by OpenGL.
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223 | 0670dadd | Michael Walle | * We only implement the most common ones:
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224 | 0670dadd | Michael Walle | * - full bilinear filtering vs. nearest texel
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225 | 0670dadd | Michael Walle | * - texture clamping vs. texture wrapping
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226 | 0670dadd | Michael Walle | */
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227 | 0670dadd | Michael Walle | if ((s->regs[R_TEXHMASK] & 0x3f) > 0x20) { |
228 | 0670dadd | Michael Walle | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); |
229 | 0670dadd | Michael Walle | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); |
230 | 0670dadd | Michael Walle | } else {
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231 | 0670dadd | Michael Walle | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
232 | 0670dadd | Michael Walle | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
233 | 0670dadd | Michael Walle | } |
234 | 0670dadd | Michael Walle | if ((s->regs[R_TEXHMASK] >> 6) & s->regs[R_TEXHRES]) { |
235 | 0670dadd | Michael Walle | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP); |
236 | 0670dadd | Michael Walle | } else {
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237 | 0670dadd | Michael Walle | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); |
238 | 0670dadd | Michael Walle | } |
239 | 0670dadd | Michael Walle | if ((s->regs[R_TEXVMASK] >> 6) & s->regs[R_TEXVRES]) { |
240 | 0670dadd | Michael Walle | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP); |
241 | 0670dadd | Michael Walle | } else {
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242 | 0670dadd | Michael Walle | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); |
243 | 0670dadd | Michael Walle | } |
244 | 0670dadd | Michael Walle | |
245 | 0670dadd | Michael Walle | /* Translucency and decay */
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246 | 0670dadd | Michael Walle | glEnable(GL_BLEND); |
247 | 0670dadd | Michael Walle | glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); |
248 | 0670dadd | Michael Walle | m = (float)(s->regs[R_BRIGHTNESS] + 1) / 64.0f; |
249 | 0670dadd | Michael Walle | glColor4f(m, m, m, (float)(s->regs[R_ALPHA] + 1) / 64.0f); |
250 | 0670dadd | Michael Walle | |
251 | 0670dadd | Michael Walle | /* Read the QEMU dest. framebuffer into the OpenGL framebuffer */
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252 | 0670dadd | Michael Walle | fb_len = 2 * s->regs[R_DSTHRES] * s->regs[R_DSTVRES];
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253 | 0670dadd | Michael Walle | fb = cpu_physical_memory_map(s->regs[R_DSTFBUF], &fb_len, 0);
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254 | 0670dadd | Michael Walle | if (fb == NULL) { |
255 | 0670dadd | Michael Walle | glDeleteTextures(1, &texture);
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256 | 0670dadd | Michael Walle | glXMakeContextCurrent(s->dpy, None, None, NULL);
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257 | 0670dadd | Michael Walle | glXDestroyPbuffer(s->dpy, pbuffer); |
258 | 0670dadd | Michael Walle | return;
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259 | 0670dadd | Michael Walle | } |
260 | 0670dadd | Michael Walle | |
261 | 0670dadd | Michael Walle | glDrawPixels(s->regs[R_DSTHRES], s->regs[R_DSTVRES], GL_RGB, |
262 | 0670dadd | Michael Walle | GL_UNSIGNED_SHORT_5_6_5, fb); |
263 | 0670dadd | Michael Walle | cpu_physical_memory_unmap(fb, fb_len, 0, fb_len);
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264 | 0670dadd | Michael Walle | glViewport(0, 0, s->regs[R_DSTHRES], s->regs[R_DSTVRES]); |
265 | 0670dadd | Michael Walle | glMatrixMode(GL_PROJECTION); |
266 | 0670dadd | Michael Walle | glLoadIdentity(); |
267 | 0670dadd | Michael Walle | glOrtho(0.0, s->regs[R_DSTHRES], 0.0, s->regs[R_DSTVRES], -1.0, 1.0); |
268 | 0670dadd | Michael Walle | glMatrixMode(GL_MODELVIEW); |
269 | 0670dadd | Michael Walle | |
270 | 0670dadd | Michael Walle | /* Map the texture */
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271 | 0670dadd | Michael Walle | mesh_len = MESH_MAXSIZE*MESH_MAXSIZE*sizeof(struct vertex); |
272 | 0670dadd | Michael Walle | mesh = cpu_physical_memory_map(s->regs[R_VERTICESADDR], &mesh_len, 0);
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273 | 0670dadd | Michael Walle | if (mesh == NULL) { |
274 | 0670dadd | Michael Walle | glDeleteTextures(1, &texture);
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275 | 0670dadd | Michael Walle | glXMakeContextCurrent(s->dpy, None, None, NULL);
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276 | 0670dadd | Michael Walle | glXDestroyPbuffer(s->dpy, pbuffer); |
277 | 0670dadd | Michael Walle | return;
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278 | 0670dadd | Michael Walle | } |
279 | 0670dadd | Michael Walle | |
280 | 0670dadd | Michael Walle | tmu2_gl_map((struct vertex *)mesh,
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281 | 0670dadd | Michael Walle | s->regs[R_TEXHRES], s->regs[R_TEXVRES], |
282 | 0670dadd | Michael Walle | s->regs[R_HMESHLAST], s->regs[R_VMESHLAST], |
283 | 0670dadd | Michael Walle | s->regs[R_DSTHOFFSET], s->regs[R_DSTVOFFSET], |
284 | 0670dadd | Michael Walle | s->regs[R_DSTSQUAREW], s->regs[R_DSTSQUAREH]); |
285 | 0670dadd | Michael Walle | cpu_physical_memory_unmap(mesh, mesh_len, 0, mesh_len);
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286 | 0670dadd | Michael Walle | |
287 | 0670dadd | Michael Walle | /* Write back the OpenGL framebuffer to the QEMU framebuffer */
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288 | 0670dadd | Michael Walle | fb_len = 2 * s->regs[R_DSTHRES] * s->regs[R_DSTVRES];
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289 | 0670dadd | Michael Walle | fb = cpu_physical_memory_map(s->regs[R_DSTFBUF], &fb_len, 1);
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290 | 0670dadd | Michael Walle | if (fb == NULL) { |
291 | 0670dadd | Michael Walle | glDeleteTextures(1, &texture);
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292 | 0670dadd | Michael Walle | glXMakeContextCurrent(s->dpy, None, None, NULL);
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293 | 0670dadd | Michael Walle | glXDestroyPbuffer(s->dpy, pbuffer); |
294 | 0670dadd | Michael Walle | return;
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295 | 0670dadd | Michael Walle | } |
296 | 0670dadd | Michael Walle | |
297 | 0670dadd | Michael Walle | glReadPixels(0, 0, s->regs[R_DSTHRES], s->regs[R_DSTVRES], GL_RGB, |
298 | 0670dadd | Michael Walle | GL_UNSIGNED_SHORT_5_6_5, fb); |
299 | 0670dadd | Michael Walle | cpu_physical_memory_unmap(fb, fb_len, 1, fb_len);
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300 | 0670dadd | Michael Walle | |
301 | 0670dadd | Michael Walle | /* Free OpenGL allocs */
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302 | 0670dadd | Michael Walle | glDeleteTextures(1, &texture);
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303 | 0670dadd | Michael Walle | glXMakeContextCurrent(s->dpy, None, None, NULL);
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304 | 0670dadd | Michael Walle | glXDestroyPbuffer(s->dpy, pbuffer); |
305 | 0670dadd | Michael Walle | |
306 | 0670dadd | Michael Walle | s->regs[R_CTL] &= ~CTL_START_BUSY; |
307 | 0670dadd | Michael Walle | |
308 | 0670dadd | Michael Walle | trace_milkymist_tmu2_pulse_irq(); |
309 | 0670dadd | Michael Walle | qemu_irq_pulse(s->irq); |
310 | 0670dadd | Michael Walle | } |
311 | 0670dadd | Michael Walle | |
312 | 0670dadd | Michael Walle | static uint32_t tmu2_read(void *opaque, target_phys_addr_t addr) |
313 | 0670dadd | Michael Walle | { |
314 | 0670dadd | Michael Walle | MilkymistTMU2State *s = opaque; |
315 | 0670dadd | Michael Walle | uint32_t r = 0;
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316 | 0670dadd | Michael Walle | |
317 | 0670dadd | Michael Walle | addr >>= 2;
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318 | 0670dadd | Michael Walle | switch (addr) {
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319 | 0670dadd | Michael Walle | case R_CTL:
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320 | 0670dadd | Michael Walle | case R_HMESHLAST:
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321 | 0670dadd | Michael Walle | case R_VMESHLAST:
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322 | 0670dadd | Michael Walle | case R_BRIGHTNESS:
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323 | 0670dadd | Michael Walle | case R_CHROMAKEY:
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324 | 0670dadd | Michael Walle | case R_VERTICESADDR:
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325 | 0670dadd | Michael Walle | case R_TEXFBUF:
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326 | 0670dadd | Michael Walle | case R_TEXHRES:
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327 | 0670dadd | Michael Walle | case R_TEXVRES:
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328 | 0670dadd | Michael Walle | case R_TEXHMASK:
|
329 | 0670dadd | Michael Walle | case R_TEXVMASK:
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330 | 0670dadd | Michael Walle | case R_DSTFBUF:
|
331 | 0670dadd | Michael Walle | case R_DSTHRES:
|
332 | 0670dadd | Michael Walle | case R_DSTVRES:
|
333 | 0670dadd | Michael Walle | case R_DSTHOFFSET:
|
334 | 0670dadd | Michael Walle | case R_DSTVOFFSET:
|
335 | 0670dadd | Michael Walle | case R_DSTSQUAREW:
|
336 | 0670dadd | Michael Walle | case R_DSTSQUAREH:
|
337 | 0670dadd | Michael Walle | case R_ALPHA:
|
338 | 0670dadd | Michael Walle | r = s->regs[addr]; |
339 | 0670dadd | Michael Walle | break;
|
340 | 0670dadd | Michael Walle | |
341 | 0670dadd | Michael Walle | default:
|
342 | 0670dadd | Michael Walle | error_report("milkymist_tmu2: read access to unknown register 0x"
|
343 | 0670dadd | Michael Walle | TARGET_FMT_plx, addr << 2);
|
344 | 0670dadd | Michael Walle | break;
|
345 | 0670dadd | Michael Walle | } |
346 | 0670dadd | Michael Walle | |
347 | 0670dadd | Michael Walle | trace_milkymist_tmu2_memory_read(addr << 2, r);
|
348 | 0670dadd | Michael Walle | |
349 | 0670dadd | Michael Walle | return r;
|
350 | 0670dadd | Michael Walle | } |
351 | 0670dadd | Michael Walle | |
352 | 0670dadd | Michael Walle | static void tmu2_check_registers(MilkymistTMU2State *s) |
353 | 0670dadd | Michael Walle | { |
354 | 0670dadd | Michael Walle | if (s->regs[R_BRIGHTNESS] > MAX_BRIGHTNESS) {
|
355 | 0670dadd | Michael Walle | error_report("milkymist_tmu2: max brightness is %d\n", MAX_BRIGHTNESS);
|
356 | 0670dadd | Michael Walle | } |
357 | 0670dadd | Michael Walle | |
358 | 0670dadd | Michael Walle | if (s->regs[R_ALPHA] > MAX_ALPHA) {
|
359 | 0670dadd | Michael Walle | error_report("milkymist_tmu2: max alpha is %d\n", MAX_ALPHA);
|
360 | 0670dadd | Michael Walle | } |
361 | 0670dadd | Michael Walle | |
362 | 0670dadd | Michael Walle | if (s->regs[R_VERTICESADDR] & 0x07) { |
363 | 0670dadd | Michael Walle | error_report("milkymist_tmu2: vertex mesh address has to be 64-bit "
|
364 | 0670dadd | Michael Walle | "aligned\n");
|
365 | 0670dadd | Michael Walle | } |
366 | 0670dadd | Michael Walle | |
367 | 0670dadd | Michael Walle | if (s->regs[R_TEXFBUF] & 0x01) { |
368 | 0670dadd | Michael Walle | error_report("milkymist_tmu2: texture buffer address has to be "
|
369 | 0670dadd | Michael Walle | "16-bit aligned\n");
|
370 | 0670dadd | Michael Walle | } |
371 | 0670dadd | Michael Walle | } |
372 | 0670dadd | Michael Walle | |
373 | 0670dadd | Michael Walle | static void tmu2_write(void *opaque, target_phys_addr_t addr, uint32_t value) |
374 | 0670dadd | Michael Walle | { |
375 | 0670dadd | Michael Walle | MilkymistTMU2State *s = opaque; |
376 | 0670dadd | Michael Walle | |
377 | 0670dadd | Michael Walle | trace_milkymist_tmu2_memory_write(addr, value); |
378 | 0670dadd | Michael Walle | |
379 | 0670dadd | Michael Walle | addr >>= 2;
|
380 | 0670dadd | Michael Walle | switch (addr) {
|
381 | 0670dadd | Michael Walle | case R_CTL:
|
382 | 0670dadd | Michael Walle | s->regs[addr] = value; |
383 | 0670dadd | Michael Walle | if (value & CTL_START_BUSY) {
|
384 | 0670dadd | Michael Walle | tmu2_start(s); |
385 | 0670dadd | Michael Walle | } |
386 | 0670dadd | Michael Walle | break;
|
387 | 0670dadd | Michael Walle | case R_BRIGHTNESS:
|
388 | 0670dadd | Michael Walle | case R_HMESHLAST:
|
389 | 0670dadd | Michael Walle | case R_VMESHLAST:
|
390 | 0670dadd | Michael Walle | case R_CHROMAKEY:
|
391 | 0670dadd | Michael Walle | case R_VERTICESADDR:
|
392 | 0670dadd | Michael Walle | case R_TEXFBUF:
|
393 | 0670dadd | Michael Walle | case R_TEXHRES:
|
394 | 0670dadd | Michael Walle | case R_TEXVRES:
|
395 | 0670dadd | Michael Walle | case R_TEXHMASK:
|
396 | 0670dadd | Michael Walle | case R_TEXVMASK:
|
397 | 0670dadd | Michael Walle | case R_DSTFBUF:
|
398 | 0670dadd | Michael Walle | case R_DSTHRES:
|
399 | 0670dadd | Michael Walle | case R_DSTVRES:
|
400 | 0670dadd | Michael Walle | case R_DSTHOFFSET:
|
401 | 0670dadd | Michael Walle | case R_DSTVOFFSET:
|
402 | 0670dadd | Michael Walle | case R_DSTSQUAREW:
|
403 | 0670dadd | Michael Walle | case R_DSTSQUAREH:
|
404 | 0670dadd | Michael Walle | case R_ALPHA:
|
405 | 0670dadd | Michael Walle | s->regs[addr] = value; |
406 | 0670dadd | Michael Walle | break;
|
407 | 0670dadd | Michael Walle | |
408 | 0670dadd | Michael Walle | default:
|
409 | 0670dadd | Michael Walle | error_report("milkymist_tmu2: write access to unknown register 0x"
|
410 | 0670dadd | Michael Walle | TARGET_FMT_plx, addr << 2);
|
411 | 0670dadd | Michael Walle | break;
|
412 | 0670dadd | Michael Walle | } |
413 | 0670dadd | Michael Walle | |
414 | 0670dadd | Michael Walle | tmu2_check_registers(s); |
415 | 0670dadd | Michael Walle | } |
416 | 0670dadd | Michael Walle | |
417 | 0670dadd | Michael Walle | static CPUReadMemoryFunc * const tmu2_read_fn[] = { |
418 | 0670dadd | Michael Walle | NULL,
|
419 | 0670dadd | Michael Walle | NULL,
|
420 | 0670dadd | Michael Walle | &tmu2_read, |
421 | 0670dadd | Michael Walle | }; |
422 | 0670dadd | Michael Walle | |
423 | 0670dadd | Michael Walle | static CPUWriteMemoryFunc * const tmu2_write_fn[] = { |
424 | 0670dadd | Michael Walle | NULL,
|
425 | 0670dadd | Michael Walle | NULL,
|
426 | 0670dadd | Michael Walle | &tmu2_write, |
427 | 0670dadd | Michael Walle | }; |
428 | 0670dadd | Michael Walle | |
429 | 0670dadd | Michael Walle | static void milkymist_tmu2_reset(DeviceState *d) |
430 | 0670dadd | Michael Walle | { |
431 | 0670dadd | Michael Walle | MilkymistTMU2State *s = container_of(d, MilkymistTMU2State, busdev.qdev); |
432 | 0670dadd | Michael Walle | int i;
|
433 | 0670dadd | Michael Walle | |
434 | 0670dadd | Michael Walle | for (i = 0; i < R_MAX; i++) { |
435 | 0670dadd | Michael Walle | s->regs[i] = 0;
|
436 | 0670dadd | Michael Walle | } |
437 | 0670dadd | Michael Walle | } |
438 | 0670dadd | Michael Walle | |
439 | 0670dadd | Michael Walle | static int milkymist_tmu2_init(SysBusDevice *dev) |
440 | 0670dadd | Michael Walle | { |
441 | 0670dadd | Michael Walle | MilkymistTMU2State *s = FROM_SYSBUS(typeof(*s), dev); |
442 | 0670dadd | Michael Walle | int tmu2_regs;
|
443 | 0670dadd | Michael Walle | |
444 | 0670dadd | Michael Walle | if (tmu2_glx_init(s)) {
|
445 | 0670dadd | Michael Walle | return 1; |
446 | 0670dadd | Michael Walle | } |
447 | 0670dadd | Michael Walle | |
448 | 0670dadd | Michael Walle | sysbus_init_irq(dev, &s->irq); |
449 | 0670dadd | Michael Walle | |
450 | 0670dadd | Michael Walle | tmu2_regs = cpu_register_io_memory(tmu2_read_fn, tmu2_write_fn, s, |
451 | 0670dadd | Michael Walle | DEVICE_NATIVE_ENDIAN); |
452 | 0670dadd | Michael Walle | sysbus_init_mmio(dev, R_MAX * 4, tmu2_regs);
|
453 | 0670dadd | Michael Walle | |
454 | 0670dadd | Michael Walle | return 0; |
455 | 0670dadd | Michael Walle | } |
456 | 0670dadd | Michael Walle | |
457 | 0670dadd | Michael Walle | static const VMStateDescription vmstate_milkymist_tmu2 = { |
458 | 0670dadd | Michael Walle | .name = "milkymist-tmu2",
|
459 | 0670dadd | Michael Walle | .version_id = 1,
|
460 | 0670dadd | Michael Walle | .minimum_version_id = 1,
|
461 | 0670dadd | Michael Walle | .minimum_version_id_old = 1,
|
462 | 0670dadd | Michael Walle | .fields = (VMStateField[]) { |
463 | 0670dadd | Michael Walle | VMSTATE_UINT32_ARRAY(regs, MilkymistTMU2State, R_MAX), |
464 | 0670dadd | Michael Walle | VMSTATE_END_OF_LIST() |
465 | 0670dadd | Michael Walle | } |
466 | 0670dadd | Michael Walle | }; |
467 | 0670dadd | Michael Walle | |
468 | 0670dadd | Michael Walle | static SysBusDeviceInfo milkymist_tmu2_info = {
|
469 | 0670dadd | Michael Walle | .init = milkymist_tmu2_init, |
470 | 0670dadd | Michael Walle | .qdev.name = "milkymist-tmu2",
|
471 | 0670dadd | Michael Walle | .qdev.size = sizeof(MilkymistTMU2State),
|
472 | 0670dadd | Michael Walle | .qdev.vmsd = &vmstate_milkymist_tmu2, |
473 | 0670dadd | Michael Walle | .qdev.reset = milkymist_tmu2_reset, |
474 | 0670dadd | Michael Walle | }; |
475 | 0670dadd | Michael Walle | |
476 | 0670dadd | Michael Walle | static void milkymist_tmu2_register(void) |
477 | 0670dadd | Michael Walle | { |
478 | 0670dadd | Michael Walle | sysbus_register_withprop(&milkymist_tmu2_info); |
479 | 0670dadd | Michael Walle | } |
480 | 0670dadd | Michael Walle | |
481 | 0670dadd | Michael Walle | device_init(milkymist_tmu2_register) |