1 /* i915_drv.c -- i830,i845,i855,i865,i915 driver -*- linux-c -*-
5 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
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:
16 * The above copyright notice and this permission notice (including the
17 * next paragraph) shall be included in all copies or substantial portions
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.
30 #include <linux/device.h>
36 #include <linux/console.h>
37 #include "drm_crtc_helper.h"
39 static int i915_modeset
= -1;
40 module_param_named(modeset
, i915_modeset
, int, 0400);
42 unsigned int i915_fbpercrtc
= 0;
43 module_param_named(fbpercrtc
, i915_fbpercrtc
, int, 0400);
45 unsigned int i915_powersave
= 1;
46 module_param_named(powersave
, i915_powersave
, int, 0400);
48 static struct drm_driver driver
;
50 #define INTEL_VGA_DEVICE(id, info) { \
51 .class = PCI_CLASS_DISPLAY_VGA << 8, \
52 .class_mask = 0xffff00, \
55 .subvendor = PCI_ANY_ID, \
56 .subdevice = PCI_ANY_ID, \
57 .driver_data = (unsigned long) info }
59 const static struct intel_device_info intel_i830_info
= {
60 .is_i8xx
= 1, .is_mobile
= 1, .cursor_needs_physical
= 1,
63 const static struct intel_device_info intel_845g_info
= {
67 const static struct intel_device_info intel_i85x_info
= {
68 .is_i8xx
= 1, .is_mobile
= 1, .cursor_needs_physical
= 1,
71 const static struct intel_device_info intel_i865g_info
= {
75 const static struct intel_device_info intel_i915g_info
= {
76 .is_i915g
= 1, .is_i9xx
= 1, .cursor_needs_physical
= 1,
78 const static struct intel_device_info intel_i915gm_info
= {
79 .is_i9xx
= 1, .is_mobile
= 1, .has_fbc
= 1,
80 .cursor_needs_physical
= 1,
82 const static struct intel_device_info intel_i945g_info
= {
83 .is_i9xx
= 1, .has_hotplug
= 1, .cursor_needs_physical
= 1,
85 const static struct intel_device_info intel_i945gm_info
= {
86 .is_i945gm
= 1, .is_i9xx
= 1, .is_mobile
= 1, .has_fbc
= 1,
87 .has_hotplug
= 1, .cursor_needs_physical
= 1,
90 const static struct intel_device_info intel_i965g_info
= {
91 .is_i965g
= 1, .is_i9xx
= 1, .has_hotplug
= 1,
94 const static struct intel_device_info intel_i965gm_info
= {
95 .is_i965g
= 1, .is_mobile
= 1, .is_i965gm
= 1, .is_i9xx
= 1,
96 .is_mobile
= 1, .has_fbc
= 1, .has_rc6
= 1,
100 const static struct intel_device_info intel_g33_info
= {
101 .is_g33
= 1, .is_i9xx
= 1, .need_gfx_hws
= 1,
105 const static struct intel_device_info intel_g45_info
= {
106 .is_i965g
= 1, .is_g4x
= 1, .is_i9xx
= 1, .need_gfx_hws
= 1,
111 const static struct intel_device_info intel_gm45_info
= {
112 .is_i965g
= 1, .is_mobile
= 1, .is_g4x
= 1, .is_i9xx
= 1,
113 .is_mobile
= 1, .need_gfx_hws
= 1, .has_fbc
= 1, .has_rc6
= 1,
118 const static struct intel_device_info intel_pineview_info
= {
119 .is_g33
= 1, .is_pineview
= 1, .is_mobile
= 1, .is_i9xx
= 1,
124 const static struct intel_device_info intel_ironlake_d_info
= {
125 .is_ironlake
= 1, .is_i965g
= 1, .is_i9xx
= 1, .need_gfx_hws
= 1,
130 const static struct intel_device_info intel_ironlake_m_info
= {
131 .is_ironlake
= 1, .is_mobile
= 1, .is_i965g
= 1, .is_i9xx
= 1,
132 .need_gfx_hws
= 1, .has_rc6
= 1,
136 const static struct pci_device_id pciidlist
[] = {
137 INTEL_VGA_DEVICE(0x3577, &intel_i830_info
),
138 INTEL_VGA_DEVICE(0x2562, &intel_845g_info
),
139 INTEL_VGA_DEVICE(0x3582, &intel_i85x_info
),
140 INTEL_VGA_DEVICE(0x35e8, &intel_i85x_info
),
141 INTEL_VGA_DEVICE(0x2572, &intel_i865g_info
),
142 INTEL_VGA_DEVICE(0x2582, &intel_i915g_info
),
143 INTEL_VGA_DEVICE(0x258a, &intel_i915g_info
),
144 INTEL_VGA_DEVICE(0x2592, &intel_i915gm_info
),
145 INTEL_VGA_DEVICE(0x2772, &intel_i945g_info
),
146 INTEL_VGA_DEVICE(0x27a2, &intel_i945gm_info
),
147 INTEL_VGA_DEVICE(0x27ae, &intel_i945gm_info
),
148 INTEL_VGA_DEVICE(0x2972, &intel_i965g_info
),
149 INTEL_VGA_DEVICE(0x2982, &intel_i965g_info
),
150 INTEL_VGA_DEVICE(0x2992, &intel_i965g_info
),
151 INTEL_VGA_DEVICE(0x29a2, &intel_i965g_info
),
152 INTEL_VGA_DEVICE(0x29b2, &intel_g33_info
),
153 INTEL_VGA_DEVICE(0x29c2, &intel_g33_info
),
154 INTEL_VGA_DEVICE(0x29d2, &intel_g33_info
),
155 INTEL_VGA_DEVICE(0x2a02, &intel_i965gm_info
),
156 INTEL_VGA_DEVICE(0x2a12, &intel_i965gm_info
),
157 INTEL_VGA_DEVICE(0x2a42, &intel_gm45_info
),
158 INTEL_VGA_DEVICE(0x2e02, &intel_g45_info
),
159 INTEL_VGA_DEVICE(0x2e12, &intel_g45_info
),
160 INTEL_VGA_DEVICE(0x2e22, &intel_g45_info
),
161 INTEL_VGA_DEVICE(0x2e32, &intel_g45_info
),
162 INTEL_VGA_DEVICE(0x2e42, &intel_g45_info
),
163 INTEL_VGA_DEVICE(0xa001, &intel_pineview_info
),
164 INTEL_VGA_DEVICE(0xa011, &intel_pineview_info
),
165 INTEL_VGA_DEVICE(0x0042, &intel_ironlake_d_info
),
166 INTEL_VGA_DEVICE(0x0046, &intel_ironlake_m_info
),
170 #if defined(CONFIG_DRM_I915_KMS)
171 MODULE_DEVICE_TABLE(pci
, pciidlist
);
174 static int i915_suspend(struct drm_device
*dev
, pm_message_t state
)
176 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
178 if (!dev
|| !dev_priv
) {
179 DRM_ERROR("dev: %p, dev_priv: %p\n", dev
, dev_priv
);
180 DRM_ERROR("DRM not initialized, aborting suspend.\n");
184 if (state
.event
== PM_EVENT_PRETHAW
)
187 pci_save_state(dev
->pdev
);
189 /* If KMS is active, we do the leavevt stuff here */
190 if (drm_core_check_feature(dev
, DRIVER_MODESET
)) {
191 if (i915_gem_idle(dev
))
192 dev_err(&dev
->pdev
->dev
,
193 "GEM idle failed, resume may fail\n");
194 drm_irq_uninstall(dev
);
197 i915_save_state(dev
);
199 intel_opregion_free(dev
, 1);
201 if (state
.event
== PM_EVENT_SUSPEND
) {
202 /* Shut down the device */
203 pci_disable_device(dev
->pdev
);
204 pci_set_power_state(dev
->pdev
, PCI_D3hot
);
207 /* Modeset on resume, not lid events */
208 dev_priv
->modeset_on_lid
= 0;
213 static int i915_resume(struct drm_device
*dev
)
215 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
218 if (pci_enable_device(dev
->pdev
))
220 pci_set_master(dev
->pdev
);
222 i915_restore_state(dev
);
224 intel_opregion_init(dev
, 1);
226 /* KMS EnterVT equivalent */
227 if (drm_core_check_feature(dev
, DRIVER_MODESET
)) {
228 mutex_lock(&dev
->struct_mutex
);
229 dev_priv
->mm
.suspended
= 0;
231 ret
= i915_gem_init_ringbuffer(dev
);
234 mutex_unlock(&dev
->struct_mutex
);
236 drm_irq_install(dev
);
238 if (drm_core_check_feature(dev
, DRIVER_MODESET
)) {
239 /* Resume the modeset for every activated CRTC */
240 drm_helper_resume_force_mode(dev
);
243 dev_priv
->modeset_on_lid
= 0;
249 * i965_reset - reset chip after a hang
250 * @dev: drm device to reset
251 * @flags: reset domains
253 * Reset the chip. Useful if a hang is detected. Returns zero on successful
254 * reset or otherwise an error code.
256 * Procedure is fairly simple:
257 * - reset the chip using the reset reg
258 * - re-init context state
259 * - re-init hardware status page
260 * - re-init ring buffer
261 * - re-init interrupt state
264 int i965_reset(struct drm_device
*dev
, u8 flags
)
266 drm_i915_private_t
*dev_priv
= dev
->dev_private
;
267 unsigned long timeout
;
270 * We really should only reset the display subsystem if we actually
273 bool need_display
= true;
275 mutex_lock(&dev
->struct_mutex
);
280 i915_gem_retire_requests(dev
);
283 i915_save_display(dev
);
285 if (IS_I965G(dev
) || IS_G4X(dev
)) {
287 * Set the domains we want to reset, then the reset bit (bit 0).
288 * Clear the reset bit after a while and wait for hardware status
289 * bit (bit 1) to be set
291 pci_read_config_byte(dev
->pdev
, GDRST
, &gdrst
);
292 pci_write_config_byte(dev
->pdev
, GDRST
, gdrst
| flags
| ((flags
== GDRST_FULL
) ? 0x1 : 0x0));
294 pci_write_config_byte(dev
->pdev
, GDRST
, gdrst
& 0xfe);
296 /* ...we don't want to loop forever though, 500ms should be plenty */
297 timeout
= jiffies
+ msecs_to_jiffies(500);
300 pci_read_config_byte(dev
->pdev
, GDRST
, &gdrst
);
301 } while ((gdrst
& 0x1) && time_after(timeout
, jiffies
));
304 WARN(true, "i915: Failed to reset chip\n");
305 mutex_unlock(&dev
->struct_mutex
);
309 DRM_ERROR("Error occurred. Don't know how to reset this chip.\n");
313 /* Ok, now get things going again... */
316 * Everything depends on having the GTT running, so we need to start
317 * there. Fortunately we don't need to do this unless we reset the
318 * chip at a PCI level.
320 * Next we need to restore the context, but we don't use those
323 * Ring buffer needs to be re-initialized in the KMS case, or if X
324 * was running at the time of the reset (i.e. we weren't VT
327 if (drm_core_check_feature(dev
, DRIVER_MODESET
) ||
328 !dev_priv
->mm
.suspended
) {
329 drm_i915_ring_buffer_t
*ring
= &dev_priv
->ring
;
330 struct drm_gem_object
*obj
= ring
->ring_obj
;
331 struct drm_i915_gem_object
*obj_priv
= obj
->driver_private
;
332 dev_priv
->mm
.suspended
= 0;
334 /* Stop the ring if it's running. */
335 I915_WRITE(PRB0_CTL
, 0);
336 I915_WRITE(PRB0_TAIL
, 0);
337 I915_WRITE(PRB0_HEAD
, 0);
339 /* Initialize the ring. */
340 I915_WRITE(PRB0_START
, obj_priv
->gtt_offset
);
342 ((obj
->size
- 4096) & RING_NR_PAGES
) |
345 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
346 i915_kernel_lost_context(dev
);
348 ring
->head
= I915_READ(PRB0_HEAD
) & HEAD_ADDR
;
349 ring
->tail
= I915_READ(PRB0_TAIL
) & TAIL_ADDR
;
350 ring
->space
= ring
->head
- (ring
->tail
+ 8);
352 ring
->space
+= ring
->Size
;
355 mutex_unlock(&dev
->struct_mutex
);
356 drm_irq_uninstall(dev
);
357 drm_irq_install(dev
);
358 mutex_lock(&dev
->struct_mutex
);
362 * Display needs restore too...
365 i915_restore_display(dev
);
367 mutex_unlock(&dev
->struct_mutex
);
373 i915_pci_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
375 return drm_get_dev(pdev
, ent
, &driver
);
379 i915_pci_remove(struct pci_dev
*pdev
)
381 struct drm_device
*dev
= pci_get_drvdata(pdev
);
387 i915_pci_suspend(struct pci_dev
*pdev
, pm_message_t state
)
389 struct drm_device
*dev
= pci_get_drvdata(pdev
);
391 return i915_suspend(dev
, state
);
395 i915_pci_resume(struct pci_dev
*pdev
)
397 struct drm_device
*dev
= pci_get_drvdata(pdev
);
399 return i915_resume(dev
);
403 i915_pm_suspend(struct device
*dev
)
405 return i915_pci_suspend(to_pci_dev(dev
), PMSG_SUSPEND
);
409 i915_pm_resume(struct device
*dev
)
411 return i915_pci_resume(to_pci_dev(dev
));
415 i915_pm_freeze(struct device
*dev
)
417 return i915_pci_suspend(to_pci_dev(dev
), PMSG_FREEZE
);
421 i915_pm_thaw(struct device
*dev
)
423 /* thaw during hibernate, do nothing! */
428 i915_pm_poweroff(struct device
*dev
)
430 return i915_pci_suspend(to_pci_dev(dev
), PMSG_HIBERNATE
);
434 i915_pm_restore(struct device
*dev
)
436 return i915_pci_resume(to_pci_dev(dev
));
439 const struct dev_pm_ops i915_pm_ops
= {
440 .suspend
= i915_pm_suspend
,
441 .resume
= i915_pm_resume
,
442 .freeze
= i915_pm_freeze
,
443 .thaw
= i915_pm_thaw
,
444 .poweroff
= i915_pm_poweroff
,
445 .restore
= i915_pm_restore
,
448 static struct vm_operations_struct i915_gem_vm_ops
= {
449 .fault
= i915_gem_fault
,
450 .open
= drm_gem_vm_open
,
451 .close
= drm_gem_vm_close
,
454 static struct drm_driver driver
= {
455 /* don't use mtrr's here, the Xserver or user space app should
456 * deal with them for intel hardware.
459 DRIVER_USE_AGP
| DRIVER_REQUIRE_AGP
| /* DRIVER_USE_MTRR |*/
460 DRIVER_HAVE_IRQ
| DRIVER_IRQ_SHARED
| DRIVER_GEM
,
461 .load
= i915_driver_load
,
462 .unload
= i915_driver_unload
,
463 .open
= i915_driver_open
,
464 .lastclose
= i915_driver_lastclose
,
465 .preclose
= i915_driver_preclose
,
466 .postclose
= i915_driver_postclose
,
467 .device_is_agp
= i915_driver_device_is_agp
,
468 .enable_vblank
= i915_enable_vblank
,
469 .disable_vblank
= i915_disable_vblank
,
470 .irq_preinstall
= i915_driver_irq_preinstall
,
471 .irq_postinstall
= i915_driver_irq_postinstall
,
472 .irq_uninstall
= i915_driver_irq_uninstall
,
473 .irq_handler
= i915_driver_irq_handler
,
474 .reclaim_buffers
= drm_core_reclaim_buffers
,
475 .get_map_ofs
= drm_core_get_map_ofs
,
476 .get_reg_ofs
= drm_core_get_reg_ofs
,
477 .master_create
= i915_master_create
,
478 .master_destroy
= i915_master_destroy
,
479 #if defined(CONFIG_DEBUG_FS)
480 .debugfs_init
= i915_debugfs_init
,
481 .debugfs_cleanup
= i915_debugfs_cleanup
,
483 .gem_init_object
= i915_gem_init_object
,
484 .gem_free_object
= i915_gem_free_object
,
485 .gem_vm_ops
= &i915_gem_vm_ops
,
486 .ioctls
= i915_ioctls
,
488 .owner
= THIS_MODULE
,
490 .release
= drm_release
,
491 .unlocked_ioctl
= drm_ioctl
,
492 .mmap
= drm_gem_mmap
,
494 .fasync
= drm_fasync
,
497 .compat_ioctl
= i915_compat_ioctl
,
503 .id_table
= pciidlist
,
504 .probe
= i915_pci_probe
,
505 .remove
= i915_pci_remove
,
506 .driver
.pm
= &i915_pm_ops
,
512 .major
= DRIVER_MAJOR
,
513 .minor
= DRIVER_MINOR
,
514 .patchlevel
= DRIVER_PATCHLEVEL
,
517 static int __init
i915_init(void)
519 driver
.num_ioctls
= i915_max_ioctl
;
521 i915_gem_shrinker_init();
524 * If CONFIG_DRM_I915_KMS is set, default to KMS unless
525 * explicitly disabled with the module pararmeter.
527 * Otherwise, just follow the parameter (defaulting to off).
529 * Allow optional vga_text_mode_force boot option to override
530 * the default behavior.
532 #if defined(CONFIG_DRM_I915_KMS)
533 if (i915_modeset
!= 0)
534 driver
.driver_features
|= DRIVER_MODESET
;
536 if (i915_modeset
== 1)
537 driver
.driver_features
|= DRIVER_MODESET
;
539 #ifdef CONFIG_VGA_CONSOLE
540 if (vgacon_text_force() && i915_modeset
== -1)
541 driver
.driver_features
&= ~DRIVER_MODESET
;
544 return drm_init(&driver
);
547 static void __exit
i915_exit(void)
549 i915_gem_shrinker_exit();
553 module_init(i915_init
);
554 module_exit(i915_exit
);
556 MODULE_AUTHOR(DRIVER_AUTHOR
);
557 MODULE_DESCRIPTION(DRIVER_DESC
);
558 MODULE_LICENSE("GPL and additional rights");