Commit | Line | Data |
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414c4531 DA |
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 | */ | |
760285e7 DH |
13 | #include <drm/drmP.h> |
14 | #include <drm/drm_crtc_helper.h> | |
414c4531 DA |
15 | #include "mgag200_drv.h" |
16 | ||
17 | static void mga_user_framebuffer_destroy(struct drm_framebuffer *fb) | |
18 | { | |
19 | struct mga_framebuffer *mga_fb = to_mga_framebuffer(fb); | |
20 | if (mga_fb->obj) | |
21 | drm_gem_object_unreference_unlocked(mga_fb->obj); | |
22 | drm_framebuffer_cleanup(fb); | |
23 | kfree(fb); | |
24 | } | |
25 | ||
414c4531 DA |
26 | static const struct drm_framebuffer_funcs mga_fb_funcs = { |
27 | .destroy = mga_user_framebuffer_destroy, | |
414c4531 DA |
28 | }; |
29 | ||
30 | int mgag200_framebuffer_init(struct drm_device *dev, | |
31 | struct mga_framebuffer *gfb, | |
32 | struct drm_mode_fb_cmd2 *mode_cmd, | |
33 | struct drm_gem_object *obj) | |
34 | { | |
c7d73f6a DV |
35 | int ret; |
36 | ||
37 | drm_helper_mode_fill_fb_struct(&gfb->base, mode_cmd); | |
38 | gfb->obj = obj; | |
39 | ret = drm_framebuffer_init(dev, &gfb->base, &mga_fb_funcs); | |
414c4531 DA |
40 | if (ret) { |
41 | DRM_ERROR("drm_framebuffer_init failed: %d\n", ret); | |
42 | return ret; | |
43 | } | |
414c4531 DA |
44 | return 0; |
45 | } | |
46 | ||
47 | static struct drm_framebuffer * | |
48 | mgag200_user_framebuffer_create(struct drm_device *dev, | |
49 | struct drm_file *filp, | |
50 | struct drm_mode_fb_cmd2 *mode_cmd) | |
51 | { | |
52 | struct drm_gem_object *obj; | |
53 | struct mga_framebuffer *mga_fb; | |
54 | int ret; | |
55 | ||
56 | obj = drm_gem_object_lookup(dev, filp, mode_cmd->handles[0]); | |
57 | if (obj == NULL) | |
58 | return ERR_PTR(-ENOENT); | |
59 | ||
60 | mga_fb = kzalloc(sizeof(*mga_fb), GFP_KERNEL); | |
61 | if (!mga_fb) { | |
62 | drm_gem_object_unreference_unlocked(obj); | |
63 | return ERR_PTR(-ENOMEM); | |
64 | } | |
65 | ||
66 | ret = mgag200_framebuffer_init(dev, mga_fb, mode_cmd, obj); | |
67 | if (ret) { | |
68 | drm_gem_object_unreference_unlocked(obj); | |
69 | kfree(mga_fb); | |
70 | return ERR_PTR(ret); | |
71 | } | |
72 | return &mga_fb->base; | |
73 | } | |
74 | ||
75 | static const struct drm_mode_config_funcs mga_mode_funcs = { | |
76 | .fb_create = mgag200_user_framebuffer_create, | |
77 | }; | |
78 | ||
414c4531 DA |
79 | static int mga_probe_vram(struct mga_device *mdev, void __iomem *mem) |
80 | { | |
81 | int offset; | |
82 | int orig; | |
83 | int test1, test2; | |
84 | int orig1, orig2; | |
85 | ||
86 | /* Probe */ | |
87 | orig = ioread16(mem); | |
88 | iowrite16(0, mem); | |
89 | ||
90 | for (offset = 0x100000; offset < mdev->mc.vram_window; offset += 0x4000) { | |
91 | orig1 = ioread8(mem + offset); | |
92 | orig2 = ioread8(mem + offset + 0x100); | |
93 | ||
94 | iowrite16(0xaa55, mem + offset); | |
95 | iowrite16(0xaa55, mem + offset + 0x100); | |
96 | ||
97 | test1 = ioread16(mem + offset); | |
98 | test2 = ioread16(mem); | |
99 | ||
100 | iowrite16(orig1, mem + offset); | |
101 | iowrite16(orig2, mem + offset + 0x100); | |
102 | ||
103 | if (test1 != 0xaa55) { | |
104 | break; | |
105 | } | |
106 | ||
107 | if (test2) { | |
108 | break; | |
109 | } | |
110 | } | |
111 | ||
112 | iowrite16(orig, mem); | |
113 | return offset - 65536; | |
114 | } | |
115 | ||
116 | /* Map the framebuffer from the card and configure the core */ | |
117 | static int mga_vram_init(struct mga_device *mdev) | |
118 | { | |
119 | void __iomem *mem; | |
120 | struct apertures_struct *aper = alloc_apertures(1); | |
0a7fdc59 TR |
121 | if (!aper) |
122 | return -ENOMEM; | |
414c4531 DA |
123 | |
124 | /* BAR 0 is VRAM */ | |
125 | mdev->mc.vram_base = pci_resource_start(mdev->dev->pdev, 0); | |
126 | mdev->mc.vram_window = pci_resource_len(mdev->dev->pdev, 0); | |
127 | ||
128 | aper->ranges[0].base = mdev->mc.vram_base; | |
129 | aper->ranges[0].size = mdev->mc.vram_window; | |
414c4531 DA |
130 | |
131 | remove_conflicting_framebuffers(aper, "mgafb", true); | |
60228646 | 132 | kfree(aper); |
414c4531 | 133 | |
c2ed8844 | 134 | if (!devm_request_mem_region(mdev->dev->dev, mdev->mc.vram_base, mdev->mc.vram_window, |
414c4531 DA |
135 | "mgadrmfb_vram")) { |
136 | DRM_ERROR("can't reserve VRAM\n"); | |
137 | return -ENXIO; | |
138 | } | |
139 | ||
140 | mem = pci_iomap(mdev->dev->pdev, 0, 0); | |
141 | ||
142 | mdev->mc.vram_size = mga_probe_vram(mdev, mem); | |
143 | ||
144 | pci_iounmap(mdev->dev->pdev, mem); | |
145 | ||
146 | return 0; | |
147 | } | |
148 | ||
149 | static int mgag200_device_init(struct drm_device *dev, | |
150 | uint32_t flags) | |
151 | { | |
152 | struct mga_device *mdev = dev->dev_private; | |
153 | int ret, option; | |
154 | ||
155 | mdev->type = flags; | |
156 | ||
157 | /* Hardcode the number of CRTCs to 1 */ | |
158 | mdev->num_crtc = 1; | |
159 | ||
160 | pci_read_config_dword(dev->pdev, PCI_MGA_OPTION, &option); | |
161 | mdev->has_sdram = !(option & (1 << 14)); | |
162 | ||
163 | /* BAR 0 is the framebuffer, BAR 1 contains registers */ | |
164 | mdev->rmmio_base = pci_resource_start(mdev->dev->pdev, 1); | |
165 | mdev->rmmio_size = pci_resource_len(mdev->dev->pdev, 1); | |
166 | ||
c2ed8844 | 167 | if (!devm_request_mem_region(mdev->dev->dev, mdev->rmmio_base, mdev->rmmio_size, |
414c4531 DA |
168 | "mgadrmfb_mmio")) { |
169 | DRM_ERROR("can't reserve mmio registers\n"); | |
170 | return -ENOMEM; | |
171 | } | |
172 | ||
c2ed8844 | 173 | mdev->rmmio = pcim_iomap(dev->pdev, 1, 0); |
414c4531 DA |
174 | if (mdev->rmmio == NULL) |
175 | return -ENOMEM; | |
176 | ||
177 | /* stash G200 SE model number for later use */ | |
178 | if (IS_G200_SE(mdev)) | |
abbee623 | 179 | mdev->unique_rev_id = RREG32(0x1e24); |
414c4531 DA |
180 | |
181 | ret = mga_vram_init(mdev); | |
c2ed8844 | 182 | if (ret) |
414c4531 | 183 | return ret; |
414c4531 DA |
184 | |
185 | mdev->bpp_shifts[0] = 0; | |
186 | mdev->bpp_shifts[1] = 1; | |
187 | mdev->bpp_shifts[2] = 0; | |
188 | mdev->bpp_shifts[3] = 2; | |
189 | return 0; | |
190 | } | |
191 | ||
414c4531 DA |
192 | /* |
193 | * Functions here will be called by the core once it's bound the driver to | |
194 | * a PCI device | |
195 | */ | |
196 | ||
197 | ||
198 | int mgag200_driver_load(struct drm_device *dev, unsigned long flags) | |
199 | { | |
200 | struct mga_device *mdev; | |
201 | int r; | |
202 | ||
c2ed8844 | 203 | mdev = devm_kzalloc(dev->dev, sizeof(struct mga_device), GFP_KERNEL); |
414c4531 DA |
204 | if (mdev == NULL) |
205 | return -ENOMEM; | |
206 | dev->dev_private = (void *)mdev; | |
207 | mdev->dev = dev; | |
208 | ||
209 | r = mgag200_device_init(dev, flags); | |
210 | if (r) { | |
211 | dev_err(&dev->pdev->dev, "Fatal error during GPU init: %d\n", r); | |
27911977 | 212 | return r; |
414c4531 DA |
213 | } |
214 | r = mgag200_mm_init(mdev); | |
215 | if (r) | |
216 | goto out; | |
217 | ||
218 | drm_mode_config_init(dev); | |
219 | dev->mode_config.funcs = (void *)&mga_mode_funcs; | |
918be888 DA |
220 | if (IS_G200_SE(mdev) && mdev->mc.vram_size < (2048*1024)) |
221 | dev->mode_config.preferred_depth = 16; | |
222 | else | |
223 | dev->mode_config.preferred_depth = 24; | |
414c4531 DA |
224 | dev->mode_config.prefer_shadow = 1; |
225 | ||
226 | r = mgag200_modeset_init(mdev); | |
a080db9f | 227 | if (r) { |
414c4531 | 228 | dev_err(&dev->pdev->dev, "Fatal error during modeset init: %d\n", r); |
a080db9f CH |
229 | goto out; |
230 | } | |
231 | ||
232 | /* Make small buffers to store a hardware cursor (double buffered icon updates) */ | |
233 | mgag200_bo_create(dev, roundup(48*64, PAGE_SIZE), 0, 0, | |
234 | &mdev->cursor.pixels_1); | |
235 | mgag200_bo_create(dev, roundup(48*64, PAGE_SIZE), 0, 0, | |
236 | &mdev->cursor.pixels_2); | |
237 | if (!mdev->cursor.pixels_2 || !mdev->cursor.pixels_1) | |
238 | goto cursor_nospace; | |
239 | mdev->cursor.pixels_current = mdev->cursor.pixels_1; | |
240 | mdev->cursor.pixels_prev = mdev->cursor.pixels_2; | |
241 | goto cursor_done; | |
242 | cursor_nospace: | |
243 | mdev->cursor.pixels_1 = NULL; | |
244 | mdev->cursor.pixels_2 = NULL; | |
245 | dev_warn(&dev->pdev->dev, "Could not allocate space for cursors. Not doing hardware cursors.\n"); | |
246 | cursor_done: | |
247 | ||
414c4531 DA |
248 | out: |
249 | if (r) | |
250 | mgag200_driver_unload(dev); | |
251 | return r; | |
252 | } | |
253 | ||
254 | int mgag200_driver_unload(struct drm_device *dev) | |
255 | { | |
256 | struct mga_device *mdev = dev->dev_private; | |
257 | ||
258 | if (mdev == NULL) | |
259 | return 0; | |
260 | mgag200_modeset_fini(mdev); | |
261 | mgag200_fbdev_fini(mdev); | |
262 | drm_mode_config_cleanup(dev); | |
263 | mgag200_mm_fini(mdev); | |
414c4531 DA |
264 | dev->dev_private = NULL; |
265 | return 0; | |
266 | } | |
267 | ||
268 | int mgag200_gem_create(struct drm_device *dev, | |
269 | u32 size, bool iskernel, | |
270 | struct drm_gem_object **obj) | |
271 | { | |
272 | struct mgag200_bo *astbo; | |
273 | int ret; | |
274 | ||
275 | *obj = NULL; | |
276 | ||
277 | size = roundup(size, PAGE_SIZE); | |
278 | if (size == 0) | |
279 | return -EINVAL; | |
280 | ||
281 | ret = mgag200_bo_create(dev, size, 0, 0, &astbo); | |
282 | if (ret) { | |
283 | if (ret != -ERESTARTSYS) | |
284 | DRM_ERROR("failed to allocate GEM object\n"); | |
285 | return ret; | |
286 | } | |
287 | *obj = &astbo->gem; | |
288 | return 0; | |
289 | } | |
290 | ||
291 | int mgag200_dumb_create(struct drm_file *file, | |
292 | struct drm_device *dev, | |
293 | struct drm_mode_create_dumb *args) | |
294 | { | |
295 | int ret; | |
296 | struct drm_gem_object *gobj; | |
297 | u32 handle; | |
298 | ||
299 | args->pitch = args->width * ((args->bpp + 7) / 8); | |
300 | args->size = args->pitch * args->height; | |
301 | ||
302 | ret = mgag200_gem_create(dev, args->size, false, | |
303 | &gobj); | |
304 | if (ret) | |
305 | return ret; | |
306 | ||
307 | ret = drm_gem_handle_create(file, gobj, &handle); | |
308 | drm_gem_object_unreference_unlocked(gobj); | |
309 | if (ret) | |
310 | return ret; | |
311 | ||
312 | args->handle = handle; | |
313 | return 0; | |
314 | } | |
315 | ||
b2890a76 | 316 | static void mgag200_bo_unref(struct mgag200_bo **bo) |
414c4531 DA |
317 | { |
318 | struct ttm_buffer_object *tbo; | |
319 | ||
320 | if ((*bo) == NULL) | |
321 | return; | |
322 | ||
323 | tbo = &((*bo)->bo); | |
324 | ttm_bo_unref(&tbo); | |
36b347fb | 325 | *bo = NULL; |
414c4531 DA |
326 | } |
327 | ||
328 | void mgag200_gem_free_object(struct drm_gem_object *obj) | |
329 | { | |
330 | struct mgag200_bo *mgag200_bo = gem_to_mga_bo(obj); | |
331 | ||
414c4531 DA |
332 | mgag200_bo_unref(&mgag200_bo); |
333 | } | |
334 | ||
335 | ||
336 | static inline u64 mgag200_bo_mmap_offset(struct mgag200_bo *bo) | |
337 | { | |
72525b3f | 338 | return drm_vma_node_offset_addr(&bo->bo.vma_node); |
414c4531 DA |
339 | } |
340 | ||
341 | int | |
342 | mgag200_dumb_mmap_offset(struct drm_file *file, | |
343 | struct drm_device *dev, | |
344 | uint32_t handle, | |
345 | uint64_t *offset) | |
346 | { | |
347 | struct drm_gem_object *obj; | |
348 | int ret; | |
349 | struct mgag200_bo *bo; | |
350 | ||
351 | mutex_lock(&dev->struct_mutex); | |
352 | obj = drm_gem_object_lookup(dev, file, handle); | |
353 | if (obj == NULL) { | |
354 | ret = -ENOENT; | |
355 | goto out_unlock; | |
356 | } | |
357 | ||
358 | bo = gem_to_mga_bo(obj); | |
359 | *offset = mgag200_bo_mmap_offset(bo); | |
360 | ||
361 | drm_gem_object_unreference(obj); | |
362 | ret = 0; | |
363 | out_unlock: | |
364 | mutex_unlock(&dev->struct_mutex); | |
365 | return ret; | |
366 | ||
367 | } |