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 };
184 
185 #define IS_G200_SE(mdev) (mdev->type == G200_SE_A || mdev->type == G200_SE_B)
186 
187 struct mga_device {
188 	struct drm_device		*dev;
189 	unsigned long			flags;
190 
191 	resource_size_t			rmmio_base;
192 	resource_size_t			rmmio_size;
193 	void __iomem			*rmmio;
194 
195 	struct mga_mc			mc;
196 	struct mga_mode_info		mode_info;
197 
198 	struct mga_fbdev *mfbdev;
199 	struct mga_cursor cursor;
200 
201 	bool				suspended;
202 	int				num_crtc;
203 	enum mga_type			type;
204 	int				has_sdram;
205 	struct drm_display_mode		mode;
206 
207 	int bpp_shifts[4];
208 
209 	int fb_mtrr;
210 
211 	struct {
212 		struct drm_global_reference mem_global_ref;
213 		struct ttm_bo_global_ref bo_global_ref;
214 		struct ttm_bo_device bdev;
215 	} ttm;
216 
217 	/* SE model number stored in reg 0x1e24 */
218 	u32 unique_rev_id;
219 };
220 
221 
222 struct mgag200_bo {
223 	struct ttm_buffer_object bo;
224 	struct ttm_placement placement;
225 	struct ttm_bo_kmap_obj kmap;
226 	struct drm_gem_object gem;
227 	struct ttm_place placements[3];
228 	int pin_count;
229 };
230 #define gem_to_mga_bo(gobj) container_of((gobj), struct mgag200_bo, gem)
231 
232 static inline struct mgag200_bo *
233 mgag200_bo(struct ttm_buffer_object *bo)
234 {
235 	return container_of(bo, struct mgag200_bo, bo);
236 }
237 				/* mgag200_crtc.c */
238 void mga_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
239 			     u16 blue, int regno);
240 void mga_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
241 			     u16 *blue, int regno);
242 
243 				/* mgag200_mode.c */
244 int mgag200_modeset_init(struct mga_device *mdev);
245 void mgag200_modeset_fini(struct mga_device *mdev);
246 
247 				/* mgag200_fb.c */
248 int mgag200_fbdev_init(struct mga_device *mdev);
249 void mgag200_fbdev_fini(struct mga_device *mdev);
250 
251 				/* mgag200_main.c */
252 int mgag200_framebuffer_init(struct drm_device *dev,
253 			     struct mga_framebuffer *mfb,
254 			     struct drm_mode_fb_cmd2 *mode_cmd,
255 			     struct drm_gem_object *obj);
256 
257 
258 int mgag200_driver_load(struct drm_device *dev, unsigned long flags);
259 int mgag200_driver_unload(struct drm_device *dev);
260 int mgag200_gem_create(struct drm_device *dev,
261 		   u32 size, bool iskernel,
262 		       struct drm_gem_object **obj);
263 int mgag200_dumb_create(struct drm_file *file,
264 			struct drm_device *dev,
265 			struct drm_mode_create_dumb *args);
266 void mgag200_gem_free_object(struct drm_gem_object *obj);
267 int
268 mgag200_dumb_mmap_offset(struct drm_file *file,
269 			 struct drm_device *dev,
270 			 uint32_t handle,
271 			 uint64_t *offset);
272 				/* mgag200_i2c.c */
273 struct mga_i2c_chan *mgag200_i2c_create(struct drm_device *dev);
274 void mgag200_i2c_destroy(struct mga_i2c_chan *i2c);
275 
276 #define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
277 void mgag200_ttm_placement(struct mgag200_bo *bo, int domain);
278 
279 static inline int mgag200_bo_reserve(struct mgag200_bo *bo, bool no_wait)
280 {
281 	int ret;
282 
283 	ret = ttm_bo_reserve(&bo->bo, true, no_wait, false, NULL);
284 	if (ret) {
285 		if (ret != -ERESTARTSYS && ret != -EBUSY)
286 			DRM_ERROR("reserve failed %p\n", bo);
287 		return ret;
288 	}
289 	return 0;
290 }
291 
292 static inline void mgag200_bo_unreserve(struct mgag200_bo *bo)
293 {
294 	ttm_bo_unreserve(&bo->bo);
295 }
296 
297 int mgag200_bo_create(struct drm_device *dev, int size, int align,
298 		      uint32_t flags, struct mgag200_bo **pastbo);
299 int mgag200_mm_init(struct mga_device *mdev);
300 void mgag200_mm_fini(struct mga_device *mdev);
301 int mgag200_mmap(struct file *filp, struct vm_area_struct *vma);
302 int mgag200_bo_pin(struct mgag200_bo *bo, u32 pl_flag, u64 *gpu_addr);
303 int mgag200_bo_unpin(struct mgag200_bo *bo);
304 int mgag200_bo_push_sysram(struct mgag200_bo *bo);
305 			   /* mgag200_cursor.c */
306 int mga_crtc_cursor_set(struct drm_crtc *crtc, struct drm_file *file_priv,
307 						uint32_t handle, uint32_t width, uint32_t height);
308 int mga_crtc_cursor_move(struct drm_crtc *crtc, int x, int y);
309 
310 #endif				/* __MGAG200_DRV_H__ */
311