1 /*
2 * Copyright 2010 Matt Turner.
3 * Copyright 2012 Red Hat
4 *
5 * This file is subject to the terms and conditions of the GNU General
6 * Public License version 2. See the file COPYING in the main
7 * directory of this archive for more details.
8 *
9 * Authors: Matthew Garrett
10 * Matt Turner
11 * Dave Airlie
12 */
13 #ifndef __MGAG200_DRV_H__
14 #define __MGAG200_DRV_H__
15
16 #include <video/vga.h>
17
18 #include <drm/drm_fb_helper.h>
19 #include <drm/ttm/ttm_bo_api.h>
20 #include <drm/ttm/ttm_bo_driver.h>
21 #include <drm/ttm/ttm_placement.h>
22 #include <drm/ttm/ttm_memory.h>
23 #include <drm/ttm/ttm_module.h>
24
25 #include <drm/drm_gem.h>
26
27 #include <linux/i2c.h>
28 #include <linux/i2c-algo-bit.h>
29
30 #include "mgag200_reg.h"
31
32 #define DRIVER_AUTHOR "Matthew Garrett"
33
34 #define DRIVER_NAME "mgag200"
35 #define DRIVER_DESC "MGA G200 SE"
36 #define DRIVER_DATE "20110418"
37
38 #define DRIVER_MAJOR 1
39 #define DRIVER_MINOR 0
40 #define DRIVER_PATCHLEVEL 0
41
42 #define MGAG200FB_CONN_LIMIT 1
43
44 #define RREG8(reg) ioread8(((void __iomem *)mdev->rmmio) + (reg))
45 #define WREG8(reg, v) iowrite8(v, ((void __iomem *)mdev->rmmio) + (reg))
46 #define RREG32(reg) ioread32(((void __iomem *)mdev->rmmio) + (reg))
47 #define WREG32(reg, v) iowrite32(v, ((void __iomem *)mdev->rmmio) + (reg))
48
49 #define ATTR_INDEX 0x1fc0
50 #define ATTR_DATA 0x1fc1
51
52 #define WREG_ATTR(reg, v) \
53 do { \
54 RREG8(0x1fda); \
55 WREG8(ATTR_INDEX, reg); \
56 WREG8(ATTR_DATA, v); \
57 } while (0) \
58
59 #define WREG_SEQ(reg, v) \
60 do { \
61 WREG8(MGAREG_SEQ_INDEX, reg); \
62 WREG8(MGAREG_SEQ_DATA, v); \
63 } while (0) \
64
65 #define WREG_CRT(reg, v) \
66 do { \
67 WREG8(MGAREG_CRTC_INDEX, reg); \
68 WREG8(MGAREG_CRTC_DATA, v); \
69 } while (0) \
70
71
72 #define WREG_ECRT(reg, v) \
73 do { \
74 WREG8(MGAREG_CRTCEXT_INDEX, reg); \
75 WREG8(MGAREG_CRTCEXT_DATA, v); \
76 } while (0) \
77
78 #define GFX_INDEX 0x1fce
79 #define GFX_DATA 0x1fcf
80
81 #define WREG_GFX(reg, v) \
82 do { \
83 WREG8(GFX_INDEX, reg); \
84 WREG8(GFX_DATA, v); \
85 } while (0) \
86
87 #define DAC_INDEX 0x3c00
88 #define DAC_DATA 0x3c0a
89
90 #define WREG_DAC(reg, v) \
91 do { \
92 WREG8(DAC_INDEX, reg); \
93 WREG8(DAC_DATA, v); \
94 } while (0) \
95
96 #define MGA_MISC_OUT 0x1fc2
97 #define MGA_MISC_IN 0x1fcc
98
99 #define MGAG200_MAX_FB_HEIGHT 4096
100 #define MGAG200_MAX_FB_WIDTH 4096
101
102 #define MATROX_DPMS_CLEARED (-1)
103
104 #define to_mga_crtc(x) container_of(x, struct mga_crtc, base)
105 #define to_mga_encoder(x) container_of(x, struct mga_encoder, base)
106 #define to_mga_connector(x) container_of(x, struct mga_connector, base)
107 #define to_mga_framebuffer(x) container_of(x, struct mga_framebuffer, base)
108
109 struct mga_framebuffer {
110 struct drm_framebuffer base;
111 struct drm_gem_object *obj;
112 };
113
114 struct mga_fbdev {
115 struct drm_fb_helper helper;
116 struct mga_framebuffer mfb;
117 void *sysram;
118 int size;
119 struct ttm_bo_kmap_obj mapping;
120 int x1, y1, x2, y2; /* dirty rect */
121 spinlock_t dirty_lock;
122 };
123
124 struct mga_crtc {
125 struct drm_crtc base;
126 u8 lut_r[256], lut_g[256], lut_b[256];
127 int last_dpms;
128 bool enabled;
129 };
130
131 struct mga_mode_info {
132 bool mode_config_initialized;
133 struct mga_crtc *crtc;
134 };
135
136 struct mga_encoder {
137 struct drm_encoder base;
138 int last_dpms;
139 };
140
141
142 struct mga_i2c_chan {
143 struct i2c_adapter adapter;
144 struct drm_device *dev;
145 struct i2c_algo_bit_data bit;
146 int data, clock;
147 };
148
149 struct mga_connector {
150 struct drm_connector base;
151 struct mga_i2c_chan *i2c;
152 };
153
154 struct mga_cursor {
155 /*
156 We have to have 2 buffers for the cursor to avoid occasional
157 corruption while switching cursor icons.
158 If either of these is NULL, then don't do hardware cursors, and
159 fall back to software.
160 */
161 struct mgag200_bo *pixels_1;
162 struct mgag200_bo *pixels_2;
163 u64 pixels_1_gpu_addr, pixels_2_gpu_addr;
164 /* The currently displayed icon, this points to one of pixels_1, or pixels_2 */
165 struct mgag200_bo *pixels_current;
166 /* The previously displayed icon */
167 struct mgag200_bo *pixels_prev;
168 };
169
170 struct mga_mc {
171 resource_size_t vram_size;
172 resource_size_t vram_base;
173 resource_size_t vram_window;
174 };
175
176 enum mga_type {
177 G200_SE_A,
178 G200_SE_B,
179 G200_WB,
180 G200_EV,
181 G200_EH,
182 G200_ER,
183 G200_EW3,
184 };
185
186 #define IS_G200_SE(mdev) (mdev->type == G200_SE_A || mdev->type == G200_SE_B)
187
188 struct mga_device {
189 struct drm_device *dev;
190 unsigned long flags;
191
192 resource_size_t rmmio_base;
193 resource_size_t rmmio_size;
194 void __iomem *rmmio;
195
196 struct mga_mc mc;
197 struct mga_mode_info mode_info;
198
199 struct mga_fbdev *mfbdev;
200 struct mga_cursor cursor;
201
202 bool suspended;
203 int num_crtc;
204 enum mga_type type;
205 int has_sdram;
206 struct drm_display_mode mode;
207
208 int bpp_shifts[4];
209
210 int fb_mtrr;
211
212 struct {
213 struct drm_global_reference mem_global_ref;
214 struct ttm_bo_global_ref bo_global_ref;
215 struct ttm_bo_device bdev;
216 } ttm;
217
218 /* SE model number stored in reg 0x1e24 */
219 u32 unique_rev_id;
220 };
221
222
223 struct mgag200_bo {
224 struct ttm_buffer_object bo;
225 struct ttm_placement placement;
226 struct ttm_bo_kmap_obj kmap;
227 struct drm_gem_object gem;
228 struct ttm_place placements[3];
229 int pin_count;
230 };
231 #define gem_to_mga_bo(gobj) container_of((gobj), struct mgag200_bo, gem)
232
233 static inline struct mgag200_bo *
mgag200_bo(struct ttm_buffer_object * bo)234 mgag200_bo(struct ttm_buffer_object *bo)
235 {
236 return container_of(bo, struct mgag200_bo, bo);
237 }
238 /* mgag200_crtc.c */
239 void mga_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
240 u16 blue, int regno);
241 void mga_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
242 u16 *blue, int regno);
243
244 /* mgag200_mode.c */
245 int mgag200_modeset_init(struct mga_device *mdev);
246 void mgag200_modeset_fini(struct mga_device *mdev);
247
248 /* mgag200_fb.c */
249 int mgag200_fbdev_init(struct mga_device *mdev);
250 void mgag200_fbdev_fini(struct mga_device *mdev);
251
252 /* mgag200_main.c */
253 int mgag200_framebuffer_init(struct drm_device *dev,
254 struct mga_framebuffer *mfb,
255 struct drm_mode_fb_cmd2 *mode_cmd,
256 struct drm_gem_object *obj);
257
258
259 int mgag200_driver_load(struct drm_device *dev, unsigned long flags);
260 int mgag200_driver_unload(struct drm_device *dev);
261 int mgag200_gem_create(struct drm_device *dev,
262 u32 size, bool iskernel,
263 struct drm_gem_object **obj);
264 int mgag200_dumb_create(struct drm_file *file,
265 struct drm_device *dev,
266 struct drm_mode_create_dumb *args);
267 void mgag200_gem_free_object(struct drm_gem_object *obj);
268 int
269 mgag200_dumb_mmap_offset(struct drm_file *file,
270 struct drm_device *dev,
271 uint32_t handle,
272 uint64_t *offset);
273 /* mgag200_i2c.c */
274 struct mga_i2c_chan *mgag200_i2c_create(struct drm_device *dev);
275 void mgag200_i2c_destroy(struct mga_i2c_chan *i2c);
276
277 #define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
278 void mgag200_ttm_placement(struct mgag200_bo *bo, int domain);
279
mgag200_bo_reserve(struct mgag200_bo * bo,bool no_wait)280 static inline int mgag200_bo_reserve(struct mgag200_bo *bo, bool no_wait)
281 {
282 int ret;
283
284 ret = ttm_bo_reserve(&bo->bo, true, no_wait, false, NULL);
285 if (ret) {
286 if (ret != -ERESTARTSYS && ret != -EBUSY)
287 DRM_ERROR("reserve failed %p\n", bo);
288 return ret;
289 }
290 return 0;
291 }
292
mgag200_bo_unreserve(struct mgag200_bo * bo)293 static inline void mgag200_bo_unreserve(struct mgag200_bo *bo)
294 {
295 ttm_bo_unreserve(&bo->bo);
296 }
297
298 int mgag200_bo_create(struct drm_device *dev, int size, int align,
299 uint32_t flags, struct mgag200_bo **pastbo);
300 int mgag200_mm_init(struct mga_device *mdev);
301 void mgag200_mm_fini(struct mga_device *mdev);
302 int mgag200_mmap(struct file *filp, struct vm_area_struct *vma);
303 int mgag200_bo_pin(struct mgag200_bo *bo, u32 pl_flag, u64 *gpu_addr);
304 int mgag200_bo_unpin(struct mgag200_bo *bo);
305 int mgag200_bo_push_sysram(struct mgag200_bo *bo);
306 /* mgag200_cursor.c */
307 int mga_crtc_cursor_set(struct drm_crtc *crtc, struct drm_file *file_priv,
308 uint32_t handle, uint32_t width, uint32_t height);
309 int mga_crtc_cursor_move(struct drm_crtc *crtc, int x, int y);
310
311 #endif /* __MGAG200_DRV_H__ */
312