Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6
[deliverable/linux.git] / drivers / gpu / drm / i915 / i915_drv.c
CommitLineData
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 40static int i915_modeset = -1;
79e53945
JB
41module_param_named(modeset, i915_modeset, int, 0400);
42
43unsigned int i915_fbpercrtc = 0;
44module_param_named(fbpercrtc, i915_fbpercrtc, int, 0400);
1da177e4 45
652c393a
JB
46unsigned int i915_powersave = 1;
47module_param_named(powersave, i915_powersave, int, 0400);
48
112b715e
KH
49static struct drm_driver driver;
50
1da177e4
LT
51static struct pci_device_id pciidlist[] = {
52 i915_PCI_IDS
53};
54
79e53945
JB
55#if defined(CONFIG_DRM_I915_KMS)
56MODULE_DEVICE_TABLE(pci, pciidlist);
57#endif
58
b932ccb5 59static 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
97static 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 */
148int 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
256static int __devinit
257i915_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
258{
259 return drm_get_dev(pdev, ent, &driver);
260}
261
262static void
263i915_pci_remove(struct pci_dev *pdev)
264{
265 struct drm_device *dev = pci_get_drvdata(pdev);
266
267 drm_put_dev(dev);
268}
269
270static int
271i915_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
278static int
279i915_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
286static 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 292static 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
359static 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
389static void __exit i915_exit(void)
390{
31169714 391 i915_gem_shrinker_exit();
1da177e4
LT
392 drm_exit(&driver);
393}
394
395module_init(i915_init);
396module_exit(i915_exit);
397
b5e89ed5
DA
398MODULE_AUTHOR(DRIVER_AUTHOR);
399MODULE_DESCRIPTION(DRIVER_DESC);
1da177e4 400MODULE_LICENSE("GPL and additional rights");
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