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1da177e4 LT |
1 | /* i915_drv.c -- i830,i845,i855,i865,i915 driver -*- linux-c -*- |
2 | */ | |
0d6aa60b | 3 | /* |
bc54fd1a | 4 | * |
1da177e4 LT |
5 | * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. |
6 | * All Rights Reserved. | |
bc54fd1a DA |
7 | * |
8 | * Permission is hereby granted, free of charge, to any person obtaining a | |
9 | * copy of this software and associated documentation files (the | |
10 | * "Software"), to deal in the Software without restriction, including | |
11 | * without limitation the rights to use, copy, modify, merge, publish, | |
12 | * distribute, sub license, and/or sell copies of the Software, and to | |
13 | * permit persons to whom the Software is furnished to do so, subject to | |
14 | * the following conditions: | |
15 | * | |
16 | * The above copyright notice and this permission notice (including the | |
17 | * next paragraph) shall be included in all copies or substantial portions | |
18 | * of the Software. | |
19 | * | |
20 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
21 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
22 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. | |
23 | * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR | |
24 | * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, | |
25 | * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE | |
26 | * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
27 | * | |
0d6aa60b | 28 | */ |
1da177e4 | 29 | |
5669fcac | 30 | #include <linux/device.h> |
1da177e4 LT |
31 | #include "drmP.h" |
32 | #include "drm.h" | |
33 | #include "i915_drm.h" | |
34 | #include "i915_drv.h" | |
35 | ||
36 | #include "drm_pciids.h" | |
79e53945 | 37 | #include <linux/console.h> |
354ff967 | 38 | #include "drm_crtc_helper.h" |
79e53945 | 39 | |
d6073d77 | 40 | static int i915_modeset = -1; |
79e53945 JB |
41 | module_param_named(modeset, i915_modeset, int, 0400); |
42 | ||
43 | unsigned int i915_fbpercrtc = 0; | |
44 | module_param_named(fbpercrtc, i915_fbpercrtc, int, 0400); | |
1da177e4 | 45 | |
652c393a JB |
46 | unsigned int i915_powersave = 1; |
47 | module_param_named(powersave, i915_powersave, int, 0400); | |
48 | ||
112b715e KH |
49 | static struct drm_driver driver; |
50 | ||
1da177e4 LT |
51 | static struct pci_device_id pciidlist[] = { |
52 | i915_PCI_IDS | |
53 | }; | |
54 | ||
79e53945 JB |
55 | #if defined(CONFIG_DRM_I915_KMS) |
56 | MODULE_DEVICE_TABLE(pci, pciidlist); | |
57 | #endif | |
58 | ||
b932ccb5 | 59 | static int i915_suspend(struct drm_device *dev, pm_message_t state) |
ba8bbcf6 JB |
60 | { |
61 | struct drm_i915_private *dev_priv = dev->dev_private; | |
ba8bbcf6 JB |
62 | |
63 | if (!dev || !dev_priv) { | |
1ae8c0a5 KP |
64 | DRM_ERROR("dev: %p, dev_priv: %p\n", dev, dev_priv); |
65 | DRM_ERROR("DRM not initialized, aborting suspend.\n"); | |
ba8bbcf6 JB |
66 | return -ENODEV; |
67 | } | |
68 | ||
b932ccb5 DA |
69 | if (state.event == PM_EVENT_PRETHAW) |
70 | return 0; | |
71 | ||
ba8bbcf6 | 72 | pci_save_state(dev->pdev); |
ba8bbcf6 | 73 | |
5669fcac | 74 | /* If KMS is active, we do the leavevt stuff here */ |
226485e9 JB |
75 | if (drm_core_check_feature(dev, DRIVER_MODESET)) { |
76 | if (i915_gem_idle(dev)) | |
77 | dev_err(&dev->pdev->dev, | |
78 | "GEM idle failed, resume may fail\n"); | |
79 | drm_irq_uninstall(dev); | |
5669fcac JB |
80 | } |
81 | ||
9e06dd39 JB |
82 | i915_save_state(dev); |
83 | ||
3b1c1c11 | 84 | intel_opregion_free(dev, 1); |
8ee1c3db | 85 | |
b932ccb5 DA |
86 | if (state.event == PM_EVENT_SUSPEND) { |
87 | /* Shut down the device */ | |
88 | pci_disable_device(dev->pdev); | |
89 | pci_set_power_state(dev->pdev, PCI_D3hot); | |
90 | } | |
ba8bbcf6 | 91 | |
06891e27 JB |
92 | dev_priv->suspended = 1; |
93 | ||
ba8bbcf6 JB |
94 | return 0; |
95 | } | |
96 | ||
97 | static int i915_resume(struct drm_device *dev) | |
98 | { | |
5669fcac JB |
99 | struct drm_i915_private *dev_priv = dev->dev_private; |
100 | int ret = 0; | |
101 | ||
ba8bbcf6 JB |
102 | if (pci_enable_device(dev->pdev)) |
103 | return -1; | |
ea7b44c8 | 104 | pci_set_master(dev->pdev); |
ba8bbcf6 | 105 | |
317c35d1 | 106 | i915_restore_state(dev); |
ba8bbcf6 | 107 | |
74a365b3 | 108 | intel_opregion_init(dev, 1); |
8ee1c3db | 109 | |
5669fcac JB |
110 | /* KMS EnterVT equivalent */ |
111 | if (drm_core_check_feature(dev, DRIVER_MODESET)) { | |
112 | mutex_lock(&dev->struct_mutex); | |
113 | dev_priv->mm.suspended = 0; | |
114 | ||
115 | ret = i915_gem_init_ringbuffer(dev); | |
116 | if (ret != 0) | |
117 | ret = -1; | |
118 | mutex_unlock(&dev->struct_mutex); | |
226485e9 JB |
119 | |
120 | drm_irq_install(dev); | |
5669fcac | 121 | } |
354ff967 ZY |
122 | if (drm_core_check_feature(dev, DRIVER_MODESET)) { |
123 | /* Resume the modeset for every activated CRTC */ | |
124 | drm_helper_resume_force_mode(dev); | |
125 | } | |
5669fcac | 126 | |
06891e27 JB |
127 | dev_priv->suspended = 0; |
128 | ||
5669fcac | 129 | return ret; |
ba8bbcf6 JB |
130 | } |
131 | ||
11ed50ec BG |
132 | /** |
133 | * i965_reset - reset chip after a hang | |
134 | * @dev: drm device to reset | |
135 | * @flags: reset domains | |
136 | * | |
137 | * Reset the chip. Useful if a hang is detected. Returns zero on successful | |
138 | * reset or otherwise an error code. | |
139 | * | |
140 | * Procedure is fairly simple: | |
141 | * - reset the chip using the reset reg | |
142 | * - re-init context state | |
143 | * - re-init hardware status page | |
144 | * - re-init ring buffer | |
145 | * - re-init interrupt state | |
146 | * - re-init display | |
147 | */ | |
148 | int i965_reset(struct drm_device *dev, u8 flags) | |
149 | { | |
150 | drm_i915_private_t *dev_priv = dev->dev_private; | |
151 | unsigned long timeout; | |
152 | u8 gdrst; | |
153 | /* | |
154 | * We really should only reset the display subsystem if we actually | |
155 | * need to | |
156 | */ | |
157 | bool need_display = true; | |
158 | ||
159 | mutex_lock(&dev->struct_mutex); | |
160 | ||
161 | /* | |
162 | * Clear request list | |
163 | */ | |
164 | i915_gem_retire_requests(dev); | |
165 | ||
166 | if (need_display) | |
167 | i915_save_display(dev); | |
168 | ||
169 | if (IS_I965G(dev) || IS_G4X(dev)) { | |
170 | /* | |
171 | * Set the domains we want to reset, then the reset bit (bit 0). | |
172 | * Clear the reset bit after a while and wait for hardware status | |
173 | * bit (bit 1) to be set | |
174 | */ | |
175 | pci_read_config_byte(dev->pdev, GDRST, &gdrst); | |
176 | pci_write_config_byte(dev->pdev, GDRST, gdrst | flags | ((flags == GDRST_FULL) ? 0x1 : 0x0)); | |
177 | udelay(50); | |
178 | pci_write_config_byte(dev->pdev, GDRST, gdrst & 0xfe); | |
179 | ||
180 | /* ...we don't want to loop forever though, 500ms should be plenty */ | |
181 | timeout = jiffies + msecs_to_jiffies(500); | |
182 | do { | |
183 | udelay(100); | |
184 | pci_read_config_byte(dev->pdev, GDRST, &gdrst); | |
185 | } while ((gdrst & 0x1) && time_after(timeout, jiffies)); | |
186 | ||
187 | if (gdrst & 0x1) { | |
188 | WARN(true, "i915: Failed to reset chip\n"); | |
189 | mutex_unlock(&dev->struct_mutex); | |
190 | return -EIO; | |
191 | } | |
192 | } else { | |
193 | DRM_ERROR("Error occurred. Don't know how to reset this chip.\n"); | |
194 | return -ENODEV; | |
195 | } | |
196 | ||
197 | /* Ok, now get things going again... */ | |
198 | ||
199 | /* | |
200 | * Everything depends on having the GTT running, so we need to start | |
201 | * there. Fortunately we don't need to do this unless we reset the | |
202 | * chip at a PCI level. | |
203 | * | |
204 | * Next we need to restore the context, but we don't use those | |
205 | * yet either... | |
206 | * | |
207 | * Ring buffer needs to be re-initialized in the KMS case, or if X | |
208 | * was running at the time of the reset (i.e. we weren't VT | |
209 | * switched away). | |
210 | */ | |
211 | if (drm_core_check_feature(dev, DRIVER_MODESET) || | |
212 | !dev_priv->mm.suspended) { | |
213 | drm_i915_ring_buffer_t *ring = &dev_priv->ring; | |
214 | struct drm_gem_object *obj = ring->ring_obj; | |
215 | struct drm_i915_gem_object *obj_priv = obj->driver_private; | |
216 | dev_priv->mm.suspended = 0; | |
217 | ||
218 | /* Stop the ring if it's running. */ | |
219 | I915_WRITE(PRB0_CTL, 0); | |
220 | I915_WRITE(PRB0_TAIL, 0); | |
221 | I915_WRITE(PRB0_HEAD, 0); | |
222 | ||
223 | /* Initialize the ring. */ | |
224 | I915_WRITE(PRB0_START, obj_priv->gtt_offset); | |
225 | I915_WRITE(PRB0_CTL, | |
226 | ((obj->size - 4096) & RING_NR_PAGES) | | |
227 | RING_NO_REPORT | | |
228 | RING_VALID); | |
229 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
230 | i915_kernel_lost_context(dev); | |
231 | else { | |
232 | ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR; | |
233 | ring->tail = I915_READ(PRB0_TAIL) & TAIL_ADDR; | |
234 | ring->space = ring->head - (ring->tail + 8); | |
235 | if (ring->space < 0) | |
236 | ring->space += ring->Size; | |
237 | } | |
238 | ||
239 | mutex_unlock(&dev->struct_mutex); | |
240 | drm_irq_uninstall(dev); | |
241 | drm_irq_install(dev); | |
242 | mutex_lock(&dev->struct_mutex); | |
243 | } | |
244 | ||
245 | /* | |
246 | * Display needs restore too... | |
247 | */ | |
248 | if (need_display) | |
249 | i915_restore_display(dev); | |
250 | ||
251 | mutex_unlock(&dev->struct_mutex); | |
252 | return 0; | |
253 | } | |
254 | ||
255 | ||
112b715e KH |
256 | static int __devinit |
257 | i915_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) | |
258 | { | |
259 | return drm_get_dev(pdev, ent, &driver); | |
260 | } | |
261 | ||
262 | static void | |
263 | i915_pci_remove(struct pci_dev *pdev) | |
264 | { | |
265 | struct drm_device *dev = pci_get_drvdata(pdev); | |
266 | ||
267 | drm_put_dev(dev); | |
268 | } | |
269 | ||
270 | static int | |
271 | i915_pci_suspend(struct pci_dev *pdev, pm_message_t state) | |
272 | { | |
273 | struct drm_device *dev = pci_get_drvdata(pdev); | |
274 | ||
275 | return i915_suspend(dev, state); | |
276 | } | |
277 | ||
278 | static int | |
279 | i915_pci_resume(struct pci_dev *pdev) | |
280 | { | |
281 | struct drm_device *dev = pci_get_drvdata(pdev); | |
282 | ||
283 | return i915_resume(dev); | |
284 | } | |
285 | ||
de151cf6 JB |
286 | static struct vm_operations_struct i915_gem_vm_ops = { |
287 | .fault = i915_gem_fault, | |
ab00b3e5 JB |
288 | .open = drm_gem_vm_open, |
289 | .close = drm_gem_vm_close, | |
de151cf6 JB |
290 | }; |
291 | ||
1da177e4 | 292 | static struct drm_driver driver = { |
792d2b9a DA |
293 | /* don't use mtrr's here, the Xserver or user space app should |
294 | * deal with them for intel hardware. | |
295 | */ | |
673a394b EA |
296 | .driver_features = |
297 | DRIVER_USE_AGP | DRIVER_REQUIRE_AGP | /* DRIVER_USE_MTRR |*/ | |
298 | DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM, | |
22eae947 | 299 | .load = i915_driver_load, |
ba8bbcf6 | 300 | .unload = i915_driver_unload, |
673a394b | 301 | .open = i915_driver_open, |
22eae947 DA |
302 | .lastclose = i915_driver_lastclose, |
303 | .preclose = i915_driver_preclose, | |
673a394b | 304 | .postclose = i915_driver_postclose, |
ba8bbcf6 JB |
305 | .suspend = i915_suspend, |
306 | .resume = i915_resume, | |
cda17380 | 307 | .device_is_agp = i915_driver_device_is_agp, |
0a3e67a4 JB |
308 | .enable_vblank = i915_enable_vblank, |
309 | .disable_vblank = i915_disable_vblank, | |
1da177e4 LT |
310 | .irq_preinstall = i915_driver_irq_preinstall, |
311 | .irq_postinstall = i915_driver_irq_postinstall, | |
312 | .irq_uninstall = i915_driver_irq_uninstall, | |
313 | .irq_handler = i915_driver_irq_handler, | |
314 | .reclaim_buffers = drm_core_reclaim_buffers, | |
315 | .get_map_ofs = drm_core_get_map_ofs, | |
316 | .get_reg_ofs = drm_core_get_reg_ofs, | |
7c1c2871 DA |
317 | .master_create = i915_master_create, |
318 | .master_destroy = i915_master_destroy, | |
955b12de | 319 | #if defined(CONFIG_DEBUG_FS) |
27c202ad BG |
320 | .debugfs_init = i915_debugfs_init, |
321 | .debugfs_cleanup = i915_debugfs_cleanup, | |
955b12de | 322 | #endif |
673a394b EA |
323 | .gem_init_object = i915_gem_init_object, |
324 | .gem_free_object = i915_gem_free_object, | |
de151cf6 | 325 | .gem_vm_ops = &i915_gem_vm_ops, |
1da177e4 LT |
326 | .ioctls = i915_ioctls, |
327 | .fops = { | |
b5e89ed5 DA |
328 | .owner = THIS_MODULE, |
329 | .open = drm_open, | |
330 | .release = drm_release, | |
331 | .ioctl = drm_ioctl, | |
de151cf6 | 332 | .mmap = drm_gem_mmap, |
b5e89ed5 DA |
333 | .poll = drm_poll, |
334 | .fasync = drm_fasync, | |
8ca7c1df | 335 | #ifdef CONFIG_COMPAT |
b5e89ed5 | 336 | .compat_ioctl = i915_compat_ioctl, |
8ca7c1df | 337 | #endif |
22eae947 DA |
338 | }, |
339 | ||
1da177e4 | 340 | .pci_driver = { |
22eae947 DA |
341 | .name = DRIVER_NAME, |
342 | .id_table = pciidlist, | |
112b715e KH |
343 | .probe = i915_pci_probe, |
344 | .remove = i915_pci_remove, | |
345 | #ifdef CONFIG_PM | |
346 | .resume = i915_pci_resume, | |
347 | .suspend = i915_pci_suspend, | |
348 | #endif | |
22eae947 | 349 | }, |
bc5f4523 | 350 | |
22eae947 DA |
351 | .name = DRIVER_NAME, |
352 | .desc = DRIVER_DESC, | |
353 | .date = DRIVER_DATE, | |
354 | .major = DRIVER_MAJOR, | |
355 | .minor = DRIVER_MINOR, | |
356 | .patchlevel = DRIVER_PATCHLEVEL, | |
1da177e4 LT |
357 | }; |
358 | ||
359 | static int __init i915_init(void) | |
360 | { | |
361 | driver.num_ioctls = i915_max_ioctl; | |
79e53945 | 362 | |
31169714 CW |
363 | i915_gem_shrinker_init(); |
364 | ||
79e53945 JB |
365 | /* |
366 | * If CONFIG_DRM_I915_KMS is set, default to KMS unless | |
367 | * explicitly disabled with the module pararmeter. | |
368 | * | |
369 | * Otherwise, just follow the parameter (defaulting to off). | |
370 | * | |
371 | * Allow optional vga_text_mode_force boot option to override | |
372 | * the default behavior. | |
373 | */ | |
374 | #if defined(CONFIG_DRM_I915_KMS) | |
375 | if (i915_modeset != 0) | |
376 | driver.driver_features |= DRIVER_MODESET; | |
377 | #endif | |
378 | if (i915_modeset == 1) | |
379 | driver.driver_features |= DRIVER_MODESET; | |
380 | ||
381 | #ifdef CONFIG_VGA_CONSOLE | |
382 | if (vgacon_text_force() && i915_modeset == -1) | |
383 | driver.driver_features &= ~DRIVER_MODESET; | |
384 | #endif | |
385 | ||
1da177e4 LT |
386 | return drm_init(&driver); |
387 | } | |
388 | ||
389 | static void __exit i915_exit(void) | |
390 | { | |
31169714 | 391 | i915_gem_shrinker_exit(); |
1da177e4 LT |
392 | drm_exit(&driver); |
393 | } | |
394 | ||
395 | module_init(i915_init); | |
396 | module_exit(i915_exit); | |
397 | ||
b5e89ed5 DA |
398 | MODULE_AUTHOR(DRIVER_AUTHOR); |
399 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 | 400 | MODULE_LICENSE("GPL and additional rights"); |