2 * Copyright 2008 Advanced Micro Devices, Inc.
3 * Copyright 2008 Red Hat Inc.
4 * Copyright 2009 Jerome Glisse.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
24 * Authors: Dave Airlie
28 #include <linux/console.h>
30 #include <drm/drm_crtc_helper.h>
31 #include <drm/radeon_drm.h>
32 #include <linux/vgaarb.h>
33 #include <linux/vga_switcheroo.h>
34 #include "radeon_reg.h"
39 * Clear GPU surface registers.
41 void radeon_surface_init(struct radeon_device *rdev)
43 /* FIXME: check this out */
44 if (rdev->family < CHIP_R600) {
47 for (i = 0; i < RADEON_GEM_MAX_SURFACES; i++) {
48 if (rdev->surface_regs[i].bo)
49 radeon_bo_get_surface_reg(rdev->surface_regs[i].bo);
51 radeon_clear_surface_reg(rdev, i);
54 WREG32(RADEON_SURFACE_CNTL, 0);
59 * GPU scratch registers helpers function.
61 void radeon_scratch_init(struct radeon_device *rdev)
65 /* FIXME: check this out */
66 if (rdev->family < CHIP_R300) {
67 rdev->scratch.num_reg = 5;
69 rdev->scratch.num_reg = 7;
71 for (i = 0; i < rdev->scratch.num_reg; i++) {
72 rdev->scratch.free[i] = true;
73 rdev->scratch.reg[i] = RADEON_SCRATCH_REG0 + (i * 4);
77 int radeon_scratch_get(struct radeon_device *rdev, uint32_t *reg)
81 for (i = 0; i < rdev->scratch.num_reg; i++) {
82 if (rdev->scratch.free[i]) {
83 rdev->scratch.free[i] = false;
84 *reg = rdev->scratch.reg[i];
91 void radeon_scratch_free(struct radeon_device *rdev, uint32_t reg)
95 for (i = 0; i < rdev->scratch.num_reg; i++) {
96 if (rdev->scratch.reg[i] == reg) {
97 rdev->scratch.free[i] = true;
104 * radeon_vram_location - try to find VRAM location
105 * @rdev: radeon device structure holding all necessary informations
106 * @mc: memory controller structure holding memory informations
107 * @base: base address at which to put VRAM
109 * Function will place try to place VRAM at base address provided
110 * as parameter (which is so far either PCI aperture address or
111 * for IGP TOM base address).
113 * If there is not enough space to fit the unvisible VRAM in the 32bits
114 * address space then we limit the VRAM size to the aperture.
116 * If we are using AGP and if the AGP aperture doesn't allow us to have
117 * room for all the VRAM than we restrict the VRAM to the PCI aperture
118 * size and print a warning.
120 * This function will never fails, worst case are limiting VRAM.
122 * Note: GTT start, end, size should be initialized before calling this
123 * function on AGP platform.
125 * Note: We don't explictly enforce VRAM start to be aligned on VRAM size,
126 * this shouldn't be a problem as we are using the PCI aperture as a reference.
127 * Otherwise this would be needed for rv280, all r3xx, and all r4xx, but
130 * Note: we use mc_vram_size as on some board we need to program the mc to
131 * cover the whole aperture even if VRAM size is inferior to aperture size
132 * Novell bug 204882 + along with lots of ubuntu ones
134 * Note: when limiting vram it's safe to overwritte real_vram_size because
135 * we are not in case where real_vram_size is inferior to mc_vram_size (ie
136 * note afected by bogus hw of Novell bug 204882 + along with lots of ubuntu
139 * Note: IGP TOM addr should be the same as the aperture addr, we don't
140 * explicitly check for that thought.
142 * FIXME: when reducing VRAM size align new size on power of 2.
144 void radeon_vram_location(struct radeon_device *rdev, struct radeon_mc *mc, u64 base)
146 mc->vram_start = base;
147 if (mc->mc_vram_size > (0xFFFFFFFF - base + 1)) {
148 dev_warn(rdev->dev, "limiting VRAM to PCI aperture size\n");
149 mc->real_vram_size = mc->aper_size;
150 mc->mc_vram_size = mc->aper_size;
152 mc->vram_end = mc->vram_start + mc->mc_vram_size - 1;
153 if (rdev->flags & RADEON_IS_AGP && mc->vram_end > mc->gtt_start && mc->vram_end <= mc->gtt_end) {
154 dev_warn(rdev->dev, "limiting VRAM to PCI aperture size\n");
155 mc->real_vram_size = mc->aper_size;
156 mc->mc_vram_size = mc->aper_size;
158 mc->vram_end = mc->vram_start + mc->mc_vram_size - 1;
159 dev_info(rdev->dev, "VRAM: %lluM 0x%08llX - 0x%08llX (%lluM used)\n",
160 mc->mc_vram_size >> 20, mc->vram_start,
161 mc->vram_end, mc->real_vram_size >> 20);
165 * radeon_gtt_location - try to find GTT location
166 * @rdev: radeon device structure holding all necessary informations
167 * @mc: memory controller structure holding memory informations
169 * Function will place try to place GTT before or after VRAM.
171 * If GTT size is bigger than space left then we ajust GTT size.
172 * Thus function will never fails.
174 * FIXME: when reducing GTT size align new size on power of 2.
176 void radeon_gtt_location(struct radeon_device *rdev, struct radeon_mc *mc)
178 u64 size_af, size_bf;
180 size_af = 0xFFFFFFFF - mc->vram_end;
181 size_bf = mc->vram_start;
182 if (size_bf > size_af) {
183 if (mc->gtt_size > size_bf) {
184 dev_warn(rdev->dev, "limiting GTT\n");
185 mc->gtt_size = size_bf;
187 mc->gtt_start = mc->vram_start - mc->gtt_size;
189 if (mc->gtt_size > size_af) {
190 dev_warn(rdev->dev, "limiting GTT\n");
191 mc->gtt_size = size_af;
193 mc->gtt_start = mc->vram_end + 1;
195 mc->gtt_end = mc->gtt_start + mc->gtt_size - 1;
196 dev_info(rdev->dev, "GTT: %lluM 0x%08llX - 0x%08llX\n",
197 mc->gtt_size >> 20, mc->gtt_start, mc->gtt_end);
201 * GPU helpers function.
203 bool radeon_card_posted(struct radeon_device *rdev)
207 /* first check CRTCs */
208 if (ASIC_IS_DCE4(rdev)) {
209 reg = RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC0_REGISTER_OFFSET) |
210 RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC1_REGISTER_OFFSET) |
211 RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC2_REGISTER_OFFSET) |
212 RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC3_REGISTER_OFFSET) |
213 RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC4_REGISTER_OFFSET) |
214 RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC5_REGISTER_OFFSET);
215 if (reg & EVERGREEN_CRTC_MASTER_EN)
217 } else if (ASIC_IS_AVIVO(rdev)) {
218 reg = RREG32(AVIVO_D1CRTC_CONTROL) |
219 RREG32(AVIVO_D2CRTC_CONTROL);
220 if (reg & AVIVO_CRTC_EN) {
224 reg = RREG32(RADEON_CRTC_GEN_CNTL) |
225 RREG32(RADEON_CRTC2_GEN_CNTL);
226 if (reg & RADEON_CRTC_EN) {
231 /* then check MEM_SIZE, in case the crtcs are off */
232 if (rdev->family >= CHIP_R600)
233 reg = RREG32(R600_CONFIG_MEMSIZE);
235 reg = RREG32(RADEON_CONFIG_MEMSIZE);
244 bool radeon_boot_test_post_card(struct radeon_device *rdev)
246 if (radeon_card_posted(rdev))
250 DRM_INFO("GPU not posted. posting now...\n");
251 if (rdev->is_atom_bios)
252 atom_asic_init(rdev->mode_info.atom_context);
254 radeon_combios_asic_init(rdev->ddev);
257 dev_err(rdev->dev, "Card not posted and no BIOS - ignoring\n");
262 int radeon_dummy_page_init(struct radeon_device *rdev)
264 if (rdev->dummy_page.page)
266 rdev->dummy_page.page = alloc_page(GFP_DMA32 | GFP_KERNEL | __GFP_ZERO);
267 if (rdev->dummy_page.page == NULL)
269 rdev->dummy_page.addr = pci_map_page(rdev->pdev, rdev->dummy_page.page,
270 0, PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
271 if (!rdev->dummy_page.addr) {
272 __free_page(rdev->dummy_page.page);
273 rdev->dummy_page.page = NULL;
279 void radeon_dummy_page_fini(struct radeon_device *rdev)
281 if (rdev->dummy_page.page == NULL)
283 pci_unmap_page(rdev->pdev, rdev->dummy_page.addr,
284 PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
285 __free_page(rdev->dummy_page.page);
286 rdev->dummy_page.page = NULL;
290 /* ATOM accessor methods */
291 static uint32_t cail_pll_read(struct card_info *info, uint32_t reg)
293 struct radeon_device *rdev = info->dev->dev_private;
296 r = rdev->pll_rreg(rdev, reg);
300 static void cail_pll_write(struct card_info *info, uint32_t reg, uint32_t val)
302 struct radeon_device *rdev = info->dev->dev_private;
304 rdev->pll_wreg(rdev, reg, val);
307 static uint32_t cail_mc_read(struct card_info *info, uint32_t reg)
309 struct radeon_device *rdev = info->dev->dev_private;
312 r = rdev->mc_rreg(rdev, reg);
316 static void cail_mc_write(struct card_info *info, uint32_t reg, uint32_t val)
318 struct radeon_device *rdev = info->dev->dev_private;
320 rdev->mc_wreg(rdev, reg, val);
323 static void cail_reg_write(struct card_info *info, uint32_t reg, uint32_t val)
325 struct radeon_device *rdev = info->dev->dev_private;
330 static uint32_t cail_reg_read(struct card_info *info, uint32_t reg)
332 struct radeon_device *rdev = info->dev->dev_private;
339 int radeon_atombios_init(struct radeon_device *rdev)
341 struct card_info *atom_card_info =
342 kzalloc(sizeof(struct card_info), GFP_KERNEL);
347 rdev->mode_info.atom_card_info = atom_card_info;
348 atom_card_info->dev = rdev->ddev;
349 atom_card_info->reg_read = cail_reg_read;
350 atom_card_info->reg_write = cail_reg_write;
351 atom_card_info->mc_read = cail_mc_read;
352 atom_card_info->mc_write = cail_mc_write;
353 atom_card_info->pll_read = cail_pll_read;
354 atom_card_info->pll_write = cail_pll_write;
356 rdev->mode_info.atom_context = atom_parse(atom_card_info, rdev->bios);
357 mutex_init(&rdev->mode_info.atom_context->mutex);
358 radeon_atom_initialize_bios_scratch_regs(rdev->ddev);
359 atom_allocate_fb_scratch(rdev->mode_info.atom_context);
363 void radeon_atombios_fini(struct radeon_device *rdev)
365 if (rdev->mode_info.atom_context) {
366 kfree(rdev->mode_info.atom_context->scratch);
367 kfree(rdev->mode_info.atom_context);
369 kfree(rdev->mode_info.atom_card_info);
372 int radeon_combios_init(struct radeon_device *rdev)
374 radeon_combios_initialize_bios_scratch_regs(rdev->ddev);
378 void radeon_combios_fini(struct radeon_device *rdev)
382 /* if we get transitioned to only one device, tak VGA back */
383 static unsigned int radeon_vga_set_decode(void *cookie, bool state)
385 struct radeon_device *rdev = cookie;
386 radeon_vga_set_state(rdev, state);
388 return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
389 VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
391 return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
394 void radeon_check_arguments(struct radeon_device *rdev)
396 /* vramlimit must be a power of two */
397 switch (radeon_vram_limit) {
412 dev_warn(rdev->dev, "vram limit (%d) must be a power of 2\n",
414 radeon_vram_limit = 0;
417 radeon_vram_limit = radeon_vram_limit << 20;
418 /* gtt size must be power of two and greater or equal to 32M */
419 switch (radeon_gart_size) {
423 dev_warn(rdev->dev, "gart size (%d) too small forcing to 512M\n",
425 radeon_gart_size = 512;
437 dev_warn(rdev->dev, "gart size (%d) must be a power of 2\n",
439 radeon_gart_size = 512;
442 rdev->mc.gtt_size = radeon_gart_size * 1024 * 1024;
443 /* AGP mode can only be -1, 1, 2, 4, 8 */
444 switch (radeon_agpmode) {
453 dev_warn(rdev->dev, "invalid AGP mode %d (valid mode: "
454 "-1, 0, 1, 2, 4, 8)\n", radeon_agpmode);
460 static void radeon_switcheroo_set_state(struct pci_dev *pdev, enum vga_switcheroo_state state)
462 struct drm_device *dev = pci_get_drvdata(pdev);
463 struct radeon_device *rdev = dev->dev_private;
464 pm_message_t pmm = { .event = PM_EVENT_SUSPEND };
465 if (state == VGA_SWITCHEROO_ON) {
466 printk(KERN_INFO "radeon: switched on\n");
467 /* don't suspend or resume card normally */
468 rdev->powered_down = false;
469 radeon_resume_kms(dev);
471 printk(KERN_INFO "radeon: switched off\n");
472 radeon_suspend_kms(dev, pmm);
473 /* don't suspend or resume card normally */
474 rdev->powered_down = true;
478 static bool radeon_switcheroo_can_switch(struct pci_dev *pdev)
480 struct drm_device *dev = pci_get_drvdata(pdev);
483 spin_lock(&dev->count_lock);
484 can_switch = (dev->open_count == 0);
485 spin_unlock(&dev->count_lock);
490 int radeon_device_init(struct radeon_device *rdev,
491 struct drm_device *ddev,
492 struct pci_dev *pdev,
498 DRM_INFO("radeon: Initializing kernel modesetting.\n");
499 rdev->shutdown = false;
500 rdev->dev = &pdev->dev;
504 rdev->family = flags & RADEON_FAMILY_MASK;
505 rdev->is_atom_bios = false;
506 rdev->usec_timeout = RADEON_MAX_USEC_TIMEOUT;
507 rdev->mc.gtt_size = radeon_gart_size * 1024 * 1024;
508 rdev->gpu_lockup = false;
509 rdev->accel_working = false;
510 /* mutex initialization are all done here so we
511 * can recall function without having locking issues */
512 mutex_init(&rdev->cs_mutex);
513 mutex_init(&rdev->ib_pool.mutex);
514 mutex_init(&rdev->cp.mutex);
515 mutex_init(&rdev->dc_hw_i2c_mutex);
516 if (rdev->family >= CHIP_R600)
517 spin_lock_init(&rdev->ih.lock);
518 mutex_init(&rdev->gem.mutex);
519 mutex_init(&rdev->pm.mutex);
520 rwlock_init(&rdev->fence_drv.lock);
521 INIT_LIST_HEAD(&rdev->gem.objects);
522 init_waitqueue_head(&rdev->irq.vblank_queue);
524 /* setup workqueue */
525 rdev->wq = create_workqueue("radeon");
526 if (rdev->wq == NULL)
529 /* Set asic functions */
530 r = radeon_asic_init(rdev);
533 radeon_check_arguments(rdev);
535 if (rdev->flags & RADEON_IS_AGP && radeon_agpmode == -1) {
536 radeon_agp_disable(rdev);
539 /* set DMA mask + need_dma32 flags.
540 * PCIE - can handle 40-bits.
541 * IGP - can handle 40-bits (in theory)
542 * AGP - generally dma32 is safest
545 rdev->need_dma32 = false;
546 if (rdev->flags & RADEON_IS_AGP)
547 rdev->need_dma32 = true;
548 if (rdev->flags & RADEON_IS_PCI)
549 rdev->need_dma32 = true;
551 dma_bits = rdev->need_dma32 ? 32 : 40;
552 r = pci_set_dma_mask(rdev->pdev, DMA_BIT_MASK(dma_bits));
554 printk(KERN_WARNING "radeon: No suitable DMA available.\n");
557 /* Registers mapping */
558 /* TODO: block userspace mapping of io register */
559 rdev->rmmio_base = drm_get_resource_start(rdev->ddev, 2);
560 rdev->rmmio_size = drm_get_resource_len(rdev->ddev, 2);
561 rdev->rmmio = ioremap(rdev->rmmio_base, rdev->rmmio_size);
562 if (rdev->rmmio == NULL) {
565 DRM_INFO("register mmio base: 0x%08X\n", (uint32_t)rdev->rmmio_base);
566 DRM_INFO("register mmio size: %u\n", (unsigned)rdev->rmmio_size);
568 /* if we have > 1 VGA cards, then disable the radeon VGA resources */
569 /* this will fail for cards that aren't VGA class devices, just
571 vga_client_register(rdev->pdev, rdev, NULL, radeon_vga_set_decode);
572 vga_switcheroo_register_client(rdev->pdev,
573 radeon_switcheroo_set_state,
574 radeon_switcheroo_can_switch);
576 r = radeon_init(rdev);
580 if (rdev->flags & RADEON_IS_AGP && !rdev->accel_working) {
581 /* Acceleration not working on AGP card try again
582 * with fallback to PCI or PCIE GART
584 radeon_gpu_reset(rdev);
586 radeon_agp_disable(rdev);
587 r = radeon_init(rdev);
591 if (radeon_testing) {
592 radeon_test_moves(rdev);
594 if (radeon_benchmarking) {
595 radeon_benchmark(rdev);
600 void radeon_device_fini(struct radeon_device *rdev)
602 DRM_INFO("radeon: finishing device.\n");
603 rdev->shutdown = true;
605 destroy_workqueue(rdev->wq);
606 vga_switcheroo_unregister_client(rdev->pdev);
607 vga_client_register(rdev->pdev, NULL, NULL, NULL);
608 iounmap(rdev->rmmio);
616 int radeon_suspend_kms(struct drm_device *dev, pm_message_t state)
618 struct radeon_device *rdev;
619 struct drm_crtc *crtc;
622 if (dev == NULL || dev->dev_private == NULL) {
625 if (state.event == PM_EVENT_PRETHAW) {
628 rdev = dev->dev_private;
630 if (rdev->powered_down)
632 /* unpin the front buffers */
633 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
634 struct radeon_framebuffer *rfb = to_radeon_framebuffer(crtc->fb);
635 struct radeon_bo *robj;
637 if (rfb == NULL || rfb->obj == NULL) {
640 robj = rfb->obj->driver_private;
641 if (robj != rdev->fbdev_rbo) {
642 r = radeon_bo_reserve(robj, false);
643 if (unlikely(r == 0)) {
644 radeon_bo_unpin(robj);
645 radeon_bo_unreserve(robj);
649 /* evict vram memory */
650 radeon_bo_evict_vram(rdev);
651 /* wait for gpu to finish processing current batch */
652 radeon_fence_wait_last(rdev);
654 radeon_save_bios_scratch_regs(rdev);
656 radeon_suspend(rdev);
657 radeon_hpd_fini(rdev);
658 /* evict remaining vram memory */
659 radeon_bo_evict_vram(rdev);
661 pci_save_state(dev->pdev);
662 if (state.event == PM_EVENT_SUSPEND) {
663 /* Shut down the device */
664 pci_disable_device(dev->pdev);
665 pci_set_power_state(dev->pdev, PCI_D3hot);
667 acquire_console_sem();
668 fb_set_suspend(rdev->fbdev_info, 1);
669 release_console_sem();
673 int radeon_resume_kms(struct drm_device *dev)
675 struct radeon_device *rdev = dev->dev_private;
677 if (rdev->powered_down)
680 acquire_console_sem();
681 pci_set_power_state(dev->pdev, PCI_D0);
682 pci_restore_state(dev->pdev);
683 if (pci_enable_device(dev->pdev)) {
684 release_console_sem();
687 pci_set_master(dev->pdev);
688 /* resume AGP if in use */
689 radeon_agp_resume(rdev);
691 radeon_restore_bios_scratch_regs(rdev);
692 fb_set_suspend(rdev->fbdev_info, 0);
693 release_console_sem();
695 /* reset hpd state */
696 radeon_hpd_init(rdev);
697 /* blat the mode back in */
698 drm_helper_resume_force_mode(dev);
706 struct radeon_debugfs {
707 struct drm_info_list *files;
710 static struct radeon_debugfs _radeon_debugfs[RADEON_DEBUGFS_MAX_NUM_FILES];
711 static unsigned _radeon_debugfs_count = 0;
713 int radeon_debugfs_add_files(struct radeon_device *rdev,
714 struct drm_info_list *files,
719 for (i = 0; i < _radeon_debugfs_count; i++) {
720 if (_radeon_debugfs[i].files == files) {
721 /* Already registered */
725 if ((_radeon_debugfs_count + nfiles) > RADEON_DEBUGFS_MAX_NUM_FILES) {
726 DRM_ERROR("Reached maximum number of debugfs files.\n");
727 DRM_ERROR("Report so we increase RADEON_DEBUGFS_MAX_NUM_FILES.\n");
730 _radeon_debugfs[_radeon_debugfs_count].files = files;
731 _radeon_debugfs[_radeon_debugfs_count].num_files = nfiles;
732 _radeon_debugfs_count++;
733 #if defined(CONFIG_DEBUG_FS)
734 drm_debugfs_create_files(files, nfiles,
735 rdev->ddev->control->debugfs_root,
736 rdev->ddev->control);
737 drm_debugfs_create_files(files, nfiles,
738 rdev->ddev->primary->debugfs_root,
739 rdev->ddev->primary);
744 #if defined(CONFIG_DEBUG_FS)
745 int radeon_debugfs_init(struct drm_minor *minor)
750 void radeon_debugfs_cleanup(struct drm_minor *minor)
754 for (i = 0; i < _radeon_debugfs_count; i++) {
755 drm_debugfs_remove_files(_radeon_debugfs[i].files,
756 _radeon_debugfs[i].num_files, minor);