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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, | |
1eb83451 | 32 | const struct drm_mode_fb_cmd2 *mode_cmd, |
414c4531 DA |
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, | |
1eb83451 | 50 | const struct drm_mode_fb_cmd2 *mode_cmd) |
414c4531 DA |
51 | { |
52 | struct drm_gem_object *obj; | |
53 | struct mga_framebuffer *mga_fb; | |
54 | int ret; | |
55 | ||
a8ad0bd8 | 56 | obj = drm_gem_object_lookup(filp, mode_cmd->handles[0]); |
414c4531 DA |
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; | |
6d857c18 | 85 | unsigned int vram_size; |
414c4531 DA |
86 | |
87 | /* Probe */ | |
88 | orig = ioread16(mem); | |
89 | iowrite16(0, mem); | |
90 | ||
6d857c18 ML |
91 | vram_size = mdev->mc.vram_window; |
92 | ||
93 | if ((mdev->type == G200_EW3) && (vram_size >= 0x1000000)) { | |
94 | vram_size = vram_size - 0x400000; | |
95 | } | |
96 | ||
97 | for (offset = 0x100000; offset < vram_size; offset += 0x4000) { | |
414c4531 DA |
98 | orig1 = ioread8(mem + offset); |
99 | orig2 = ioread8(mem + offset + 0x100); | |
100 | ||
101 | iowrite16(0xaa55, mem + offset); | |
102 | iowrite16(0xaa55, mem + offset + 0x100); | |
103 | ||
104 | test1 = ioread16(mem + offset); | |
105 | test2 = ioread16(mem); | |
106 | ||
107 | iowrite16(orig1, mem + offset); | |
108 | iowrite16(orig2, mem + offset + 0x100); | |
109 | ||
110 | if (test1 != 0xaa55) { | |
111 | break; | |
112 | } | |
113 | ||
114 | if (test2) { | |
115 | break; | |
116 | } | |
117 | } | |
118 | ||
119 | iowrite16(orig, mem); | |
120 | return offset - 65536; | |
121 | } | |
122 | ||
123 | /* Map the framebuffer from the card and configure the core */ | |
124 | static int mga_vram_init(struct mga_device *mdev) | |
125 | { | |
126 | void __iomem *mem; | |
127 | struct apertures_struct *aper = alloc_apertures(1); | |
0a7fdc59 TR |
128 | if (!aper) |
129 | return -ENOMEM; | |
414c4531 DA |
130 | |
131 | /* BAR 0 is VRAM */ | |
132 | mdev->mc.vram_base = pci_resource_start(mdev->dev->pdev, 0); | |
133 | mdev->mc.vram_window = pci_resource_len(mdev->dev->pdev, 0); | |
134 | ||
135 | aper->ranges[0].base = mdev->mc.vram_base; | |
136 | aper->ranges[0].size = mdev->mc.vram_window; | |
414c4531 DA |
137 | |
138 | remove_conflicting_framebuffers(aper, "mgafb", true); | |
60228646 | 139 | kfree(aper); |
414c4531 | 140 | |
c2ed8844 | 141 | if (!devm_request_mem_region(mdev->dev->dev, mdev->mc.vram_base, mdev->mc.vram_window, |
414c4531 DA |
142 | "mgadrmfb_vram")) { |
143 | DRM_ERROR("can't reserve VRAM\n"); | |
144 | return -ENXIO; | |
145 | } | |
146 | ||
147 | mem = pci_iomap(mdev->dev->pdev, 0, 0); | |
148 | ||
149 | mdev->mc.vram_size = mga_probe_vram(mdev, mem); | |
150 | ||
151 | pci_iounmap(mdev->dev->pdev, mem); | |
152 | ||
153 | return 0; | |
154 | } | |
155 | ||
156 | static int mgag200_device_init(struct drm_device *dev, | |
157 | uint32_t flags) | |
158 | { | |
159 | struct mga_device *mdev = dev->dev_private; | |
160 | int ret, option; | |
161 | ||
162 | mdev->type = flags; | |
163 | ||
164 | /* Hardcode the number of CRTCs to 1 */ | |
165 | mdev->num_crtc = 1; | |
166 | ||
167 | pci_read_config_dword(dev->pdev, PCI_MGA_OPTION, &option); | |
168 | mdev->has_sdram = !(option & (1 << 14)); | |
169 | ||
170 | /* BAR 0 is the framebuffer, BAR 1 contains registers */ | |
171 | mdev->rmmio_base = pci_resource_start(mdev->dev->pdev, 1); | |
172 | mdev->rmmio_size = pci_resource_len(mdev->dev->pdev, 1); | |
173 | ||
c2ed8844 | 174 | if (!devm_request_mem_region(mdev->dev->dev, mdev->rmmio_base, mdev->rmmio_size, |
414c4531 DA |
175 | "mgadrmfb_mmio")) { |
176 | DRM_ERROR("can't reserve mmio registers\n"); | |
177 | return -ENOMEM; | |
178 | } | |
179 | ||
c2ed8844 | 180 | mdev->rmmio = pcim_iomap(dev->pdev, 1, 0); |
414c4531 DA |
181 | if (mdev->rmmio == NULL) |
182 | return -ENOMEM; | |
183 | ||
184 | /* stash G200 SE model number for later use */ | |
185 | if (IS_G200_SE(mdev)) | |
abbee623 | 186 | mdev->unique_rev_id = RREG32(0x1e24); |
414c4531 DA |
187 | |
188 | ret = mga_vram_init(mdev); | |
c2ed8844 | 189 | if (ret) |
414c4531 | 190 | return ret; |
414c4531 DA |
191 | |
192 | mdev->bpp_shifts[0] = 0; | |
193 | mdev->bpp_shifts[1] = 1; | |
194 | mdev->bpp_shifts[2] = 0; | |
195 | mdev->bpp_shifts[3] = 2; | |
196 | return 0; | |
197 | } | |
198 | ||
414c4531 DA |
199 | /* |
200 | * Functions here will be called by the core once it's bound the driver to | |
201 | * a PCI device | |
202 | */ | |
203 | ||
204 | ||
205 | int mgag200_driver_load(struct drm_device *dev, unsigned long flags) | |
206 | { | |
207 | struct mga_device *mdev; | |
208 | int r; | |
209 | ||
c2ed8844 | 210 | mdev = devm_kzalloc(dev->dev, sizeof(struct mga_device), GFP_KERNEL); |
414c4531 DA |
211 | if (mdev == NULL) |
212 | return -ENOMEM; | |
213 | dev->dev_private = (void *)mdev; | |
214 | mdev->dev = dev; | |
215 | ||
216 | r = mgag200_device_init(dev, flags); | |
217 | if (r) { | |
218 | dev_err(&dev->pdev->dev, "Fatal error during GPU init: %d\n", r); | |
27911977 | 219 | return r; |
414c4531 DA |
220 | } |
221 | r = mgag200_mm_init(mdev); | |
222 | if (r) | |
728f8660 | 223 | goto err_mm; |
414c4531 DA |
224 | |
225 | drm_mode_config_init(dev); | |
226 | dev->mode_config.funcs = (void *)&mga_mode_funcs; | |
918be888 DA |
227 | if (IS_G200_SE(mdev) && mdev->mc.vram_size < (2048*1024)) |
228 | dev->mode_config.preferred_depth = 16; | |
229 | else | |
230 | dev->mode_config.preferred_depth = 24; | |
414c4531 DA |
231 | dev->mode_config.prefer_shadow = 1; |
232 | ||
233 | r = mgag200_modeset_init(mdev); | |
a080db9f | 234 | if (r) { |
414c4531 | 235 | dev_err(&dev->pdev->dev, "Fatal error during modeset init: %d\n", r); |
728f8660 | 236 | goto err_modeset; |
a080db9f CH |
237 | } |
238 | ||
239 | /* Make small buffers to store a hardware cursor (double buffered icon updates) */ | |
240 | mgag200_bo_create(dev, roundup(48*64, PAGE_SIZE), 0, 0, | |
241 | &mdev->cursor.pixels_1); | |
242 | mgag200_bo_create(dev, roundup(48*64, PAGE_SIZE), 0, 0, | |
243 | &mdev->cursor.pixels_2); | |
728f8660 AT |
244 | if (!mdev->cursor.pixels_2 || !mdev->cursor.pixels_1) { |
245 | mdev->cursor.pixels_1 = NULL; | |
246 | mdev->cursor.pixels_2 = NULL; | |
247 | dev_warn(&dev->pdev->dev, | |
248 | "Could not allocate space for cursors. Not doing hardware cursors.\n"); | |
249 | } else { | |
250 | mdev->cursor.pixels_current = mdev->cursor.pixels_1; | |
251 | mdev->cursor.pixels_prev = mdev->cursor.pixels_2; | |
252 | } | |
253 | ||
254 | return 0; | |
255 | ||
256 | err_modeset: | |
257 | drm_mode_config_cleanup(dev); | |
258 | mgag200_mm_fini(mdev); | |
259 | err_mm: | |
260 | dev->dev_private = NULL; | |
261 | ||
414c4531 DA |
262 | return r; |
263 | } | |
264 | ||
265 | int mgag200_driver_unload(struct drm_device *dev) | |
266 | { | |
267 | struct mga_device *mdev = dev->dev_private; | |
268 | ||
269 | if (mdev == NULL) | |
270 | return 0; | |
271 | mgag200_modeset_fini(mdev); | |
272 | mgag200_fbdev_fini(mdev); | |
273 | drm_mode_config_cleanup(dev); | |
274 | mgag200_mm_fini(mdev); | |
414c4531 DA |
275 | dev->dev_private = NULL; |
276 | return 0; | |
277 | } | |
278 | ||
279 | int mgag200_gem_create(struct drm_device *dev, | |
280 | u32 size, bool iskernel, | |
281 | struct drm_gem_object **obj) | |
282 | { | |
283 | struct mgag200_bo *astbo; | |
284 | int ret; | |
285 | ||
286 | *obj = NULL; | |
287 | ||
288 | size = roundup(size, PAGE_SIZE); | |
289 | if (size == 0) | |
290 | return -EINVAL; | |
291 | ||
292 | ret = mgag200_bo_create(dev, size, 0, 0, &astbo); | |
293 | if (ret) { | |
294 | if (ret != -ERESTARTSYS) | |
295 | DRM_ERROR("failed to allocate GEM object\n"); | |
296 | return ret; | |
297 | } | |
298 | *obj = &astbo->gem; | |
299 | return 0; | |
300 | } | |
301 | ||
302 | int mgag200_dumb_create(struct drm_file *file, | |
303 | struct drm_device *dev, | |
304 | struct drm_mode_create_dumb *args) | |
305 | { | |
306 | int ret; | |
307 | struct drm_gem_object *gobj; | |
308 | u32 handle; | |
309 | ||
310 | args->pitch = args->width * ((args->bpp + 7) / 8); | |
311 | args->size = args->pitch * args->height; | |
312 | ||
313 | ret = mgag200_gem_create(dev, args->size, false, | |
314 | &gobj); | |
315 | if (ret) | |
316 | return ret; | |
317 | ||
318 | ret = drm_gem_handle_create(file, gobj, &handle); | |
319 | drm_gem_object_unreference_unlocked(gobj); | |
320 | if (ret) | |
321 | return ret; | |
322 | ||
323 | args->handle = handle; | |
324 | return 0; | |
325 | } | |
326 | ||
b2890a76 | 327 | static void mgag200_bo_unref(struct mgag200_bo **bo) |
414c4531 DA |
328 | { |
329 | struct ttm_buffer_object *tbo; | |
330 | ||
331 | if ((*bo) == NULL) | |
332 | return; | |
333 | ||
334 | tbo = &((*bo)->bo); | |
335 | ttm_bo_unref(&tbo); | |
36b347fb | 336 | *bo = NULL; |
414c4531 DA |
337 | } |
338 | ||
339 | void mgag200_gem_free_object(struct drm_gem_object *obj) | |
340 | { | |
341 | struct mgag200_bo *mgag200_bo = gem_to_mga_bo(obj); | |
342 | ||
414c4531 DA |
343 | mgag200_bo_unref(&mgag200_bo); |
344 | } | |
345 | ||
346 | ||
347 | static inline u64 mgag200_bo_mmap_offset(struct mgag200_bo *bo) | |
348 | { | |
72525b3f | 349 | return drm_vma_node_offset_addr(&bo->bo.vma_node); |
414c4531 DA |
350 | } |
351 | ||
352 | int | |
353 | mgag200_dumb_mmap_offset(struct drm_file *file, | |
354 | struct drm_device *dev, | |
355 | uint32_t handle, | |
356 | uint64_t *offset) | |
357 | { | |
358 | struct drm_gem_object *obj; | |
414c4531 DA |
359 | struct mgag200_bo *bo; |
360 | ||
a8ad0bd8 | 361 | obj = drm_gem_object_lookup(file, handle); |
34c294f5 DV |
362 | if (obj == NULL) |
363 | return -ENOENT; | |
414c4531 DA |
364 | |
365 | bo = gem_to_mga_bo(obj); | |
366 | *offset = mgag200_bo_mmap_offset(bo); | |
367 | ||
34c294f5 DV |
368 | drm_gem_object_unreference_unlocked(obj); |
369 | return 0; | |
414c4531 | 370 | } |