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
29 #include <linux/console.h>
30 #include <linux/efi.h>
31 #include <linux/pci.h>
32 #include <linux/pm_runtime.h>
33 #include <linux/slab.h>
34 #include <linux/vga_switcheroo.h>
35 #include <linux/vgaarb.h>
37 #include <drm/drm_cache.h>
38 #include <drm/drm_client_event.h>
39 #include <drm/drm_crtc_helper.h>
40 #include <drm/drm_device.h>
41 #include <drm/drm_file.h>
42 #include <drm/drm_framebuffer.h>
43 #include <drm/drm_probe_helper.h>
44 #include <drm/radeon_drm.h>
46 #include "radeon_device.h"
47 #include "radeon_reg.h"
51 static const char radeon_family_name[][16] = {
117 #if defined(CONFIG_VGA_SWITCHEROO)
118 bool radeon_has_atpx_dgpu_power_cntl(void);
119 bool radeon_is_atpx_hybrid(void);
121 static inline bool radeon_has_atpx_dgpu_power_cntl(void) { return false; }
122 static inline bool radeon_is_atpx_hybrid(void) { return false; }
125 #define RADEON_PX_QUIRK_DISABLE_PX (1 << 0)
127 struct radeon_px_quirk {
135 static struct radeon_px_quirk radeon_px_quirk_list[] = {
136 /* Acer aspire 5560g (CPU: AMD A4-3305M; GPU: AMD Radeon HD 6480g + 7470m)
137 * https://bugzilla.kernel.org/show_bug.cgi?id=74551
139 { PCI_VENDOR_ID_ATI, 0x6760, 0x1025, 0x0672, RADEON_PX_QUIRK_DISABLE_PX },
140 /* Asus K73TA laptop with AMD A6-3400M APU and Radeon 6550 GPU
141 * https://bugzilla.kernel.org/show_bug.cgi?id=51381
143 { PCI_VENDOR_ID_ATI, 0x6741, 0x1043, 0x108c, RADEON_PX_QUIRK_DISABLE_PX },
144 /* Asus K53TK laptop with AMD A6-3420M APU and Radeon 7670m GPU
145 * https://bugzilla.kernel.org/show_bug.cgi?id=51381
147 { PCI_VENDOR_ID_ATI, 0x6840, 0x1043, 0x2122, RADEON_PX_QUIRK_DISABLE_PX },
148 /* Asus K53TK laptop with AMD A6-3420M APU and Radeon 7670m GPU
149 * https://bugs.freedesktop.org/show_bug.cgi?id=101491
151 { PCI_VENDOR_ID_ATI, 0x6741, 0x1043, 0x2122, RADEON_PX_QUIRK_DISABLE_PX },
152 /* Asus K73TK laptop with AMD A6-3420M APU and Radeon 7670m GPU
153 * https://bugzilla.kernel.org/show_bug.cgi?id=51381#c52
155 { PCI_VENDOR_ID_ATI, 0x6840, 0x1043, 0x2123, RADEON_PX_QUIRK_DISABLE_PX },
159 bool radeon_is_px(struct drm_device *dev)
161 struct radeon_device *rdev = dev->dev_private;
163 if (rdev->flags & RADEON_IS_PX)
168 static void radeon_device_handle_px_quirks(struct radeon_device *rdev)
170 struct radeon_px_quirk *p = radeon_px_quirk_list;
172 /* Apply PX quirks */
173 while (p && p->chip_device != 0) {
174 if (rdev->pdev->vendor == p->chip_vendor &&
175 rdev->pdev->device == p->chip_device &&
176 rdev->pdev->subsystem_vendor == p->subsys_vendor &&
177 rdev->pdev->subsystem_device == p->subsys_device) {
178 rdev->px_quirk_flags = p->px_quirk_flags;
184 if (rdev->px_quirk_flags & RADEON_PX_QUIRK_DISABLE_PX)
185 rdev->flags &= ~RADEON_IS_PX;
187 /* disable PX is the system doesn't support dGPU power control or hybrid gfx */
188 if (!radeon_is_atpx_hybrid() &&
189 !radeon_has_atpx_dgpu_power_cntl())
190 rdev->flags &= ~RADEON_IS_PX;
194 * radeon_program_register_sequence - program an array of registers.
196 * @rdev: radeon_device pointer
197 * @registers: pointer to the register array
198 * @array_size: size of the register array
200 * Programs an array or registers with and and or masks.
201 * This is a helper for setting golden registers.
203 void radeon_program_register_sequence(struct radeon_device *rdev,
204 const u32 *registers,
205 const u32 array_size)
207 u32 tmp, reg, and_mask, or_mask;
213 for (i = 0; i < array_size; i +=3) {
214 reg = registers[i + 0];
215 and_mask = registers[i + 1];
216 or_mask = registers[i + 2];
218 if (and_mask == 0xffffffff) {
229 void radeon_pci_config_reset(struct radeon_device *rdev)
231 pci_write_config_dword(rdev->pdev, 0x7c, RADEON_ASIC_RESET_DATA);
235 * radeon_surface_init - Clear GPU surface registers.
237 * @rdev: radeon_device pointer
239 * Clear GPU surface registers (r1xx-r5xx).
241 void radeon_surface_init(struct radeon_device *rdev)
243 /* FIXME: check this out */
244 if (rdev->family < CHIP_R600) {
247 for (i = 0; i < RADEON_GEM_MAX_SURFACES; i++) {
248 if (rdev->surface_regs[i].bo)
249 radeon_bo_get_surface_reg(rdev->surface_regs[i].bo);
251 radeon_clear_surface_reg(rdev, i);
253 /* enable surfaces */
254 WREG32(RADEON_SURFACE_CNTL, 0);
259 * GPU scratch registers helpers function.
262 * radeon_scratch_init - Init scratch register driver information.
264 * @rdev: radeon_device pointer
266 * Init CP scratch register driver information (r1xx-r5xx)
268 void radeon_scratch_init(struct radeon_device *rdev)
272 /* FIXME: check this out */
273 if (rdev->family < CHIP_R300) {
274 rdev->scratch.num_reg = 5;
276 rdev->scratch.num_reg = 7;
278 rdev->scratch.reg_base = RADEON_SCRATCH_REG0;
279 for (i = 0; i < rdev->scratch.num_reg; i++) {
280 rdev->scratch.free[i] = true;
281 rdev->scratch.reg[i] = rdev->scratch.reg_base + (i * 4);
286 * radeon_scratch_get - Allocate a scratch register
288 * @rdev: radeon_device pointer
289 * @reg: scratch register mmio offset
291 * Allocate a CP scratch register for use by the driver (all asics).
292 * Returns 0 on success or -EINVAL on failure.
294 int radeon_scratch_get(struct radeon_device *rdev, uint32_t *reg)
298 for (i = 0; i < rdev->scratch.num_reg; i++) {
299 if (rdev->scratch.free[i]) {
300 rdev->scratch.free[i] = false;
301 *reg = rdev->scratch.reg[i];
309 * radeon_scratch_free - Free a scratch register
311 * @rdev: radeon_device pointer
312 * @reg: scratch register mmio offset
314 * Free a CP scratch register allocated for use by the driver (all asics)
316 void radeon_scratch_free(struct radeon_device *rdev, uint32_t reg)
320 for (i = 0; i < rdev->scratch.num_reg; i++) {
321 if (rdev->scratch.reg[i] == reg) {
322 rdev->scratch.free[i] = true;
329 * GPU doorbell aperture helpers function.
332 * radeon_doorbell_init - Init doorbell driver information.
334 * @rdev: radeon_device pointer
336 * Init doorbell driver information (CIK)
337 * Returns 0 on success, error on failure.
339 static int radeon_doorbell_init(struct radeon_device *rdev)
341 /* doorbell bar mapping */
342 rdev->doorbell.base = pci_resource_start(rdev->pdev, 2);
343 rdev->doorbell.size = pci_resource_len(rdev->pdev, 2);
345 rdev->doorbell.num_doorbells = min_t(u32, rdev->doorbell.size / sizeof(u32), RADEON_MAX_DOORBELLS);
346 if (rdev->doorbell.num_doorbells == 0)
349 rdev->doorbell.ptr = ioremap(rdev->doorbell.base, rdev->doorbell.num_doorbells * sizeof(u32));
350 if (rdev->doorbell.ptr == NULL) {
353 DRM_INFO("doorbell mmio base: 0x%08X\n", (uint32_t)rdev->doorbell.base);
354 DRM_INFO("doorbell mmio size: %u\n", (unsigned)rdev->doorbell.size);
356 memset(&rdev->doorbell.used, 0, sizeof(rdev->doorbell.used));
362 * radeon_doorbell_fini - Tear down doorbell driver information.
364 * @rdev: radeon_device pointer
366 * Tear down doorbell driver information (CIK)
368 static void radeon_doorbell_fini(struct radeon_device *rdev)
370 iounmap(rdev->doorbell.ptr);
371 rdev->doorbell.ptr = NULL;
375 * radeon_doorbell_get - Allocate a doorbell entry
377 * @rdev: radeon_device pointer
378 * @doorbell: doorbell index
380 * Allocate a doorbell for use by the driver (all asics).
381 * Returns 0 on success or -EINVAL on failure.
383 int radeon_doorbell_get(struct radeon_device *rdev, u32 *doorbell)
385 unsigned long offset = find_first_zero_bit(rdev->doorbell.used, rdev->doorbell.num_doorbells);
386 if (offset < rdev->doorbell.num_doorbells) {
387 __set_bit(offset, rdev->doorbell.used);
396 * radeon_doorbell_free - Free a doorbell entry
398 * @rdev: radeon_device pointer
399 * @doorbell: doorbell index
401 * Free a doorbell allocated for use by the driver (all asics)
403 void radeon_doorbell_free(struct radeon_device *rdev, u32 doorbell)
405 if (doorbell < rdev->doorbell.num_doorbells)
406 __clear_bit(doorbell, rdev->doorbell.used);
411 * Writeback is the method by which the GPU updates special pages
412 * in memory with the status of certain GPU events (fences, ring pointers,
417 * radeon_wb_disable - Disable Writeback
419 * @rdev: radeon_device pointer
421 * Disables Writeback (all asics). Used for suspend.
423 void radeon_wb_disable(struct radeon_device *rdev)
425 rdev->wb.enabled = false;
429 * radeon_wb_fini - Disable Writeback and free memory
431 * @rdev: radeon_device pointer
433 * Disables Writeback and frees the Writeback memory (all asics).
434 * Used at driver shutdown.
436 void radeon_wb_fini(struct radeon_device *rdev)
438 radeon_wb_disable(rdev);
439 if (rdev->wb.wb_obj) {
440 if (!radeon_bo_reserve(rdev->wb.wb_obj, false)) {
441 radeon_bo_kunmap(rdev->wb.wb_obj);
442 radeon_bo_unpin(rdev->wb.wb_obj);
443 radeon_bo_unreserve(rdev->wb.wb_obj);
445 radeon_bo_unref(&rdev->wb.wb_obj);
447 rdev->wb.wb_obj = NULL;
452 * radeon_wb_init- Init Writeback driver info and allocate memory
454 * @rdev: radeon_device pointer
456 * Disables Writeback and frees the Writeback memory (all asics).
457 * Used at driver startup.
458 * Returns 0 on success or an -error on failure.
460 int radeon_wb_init(struct radeon_device *rdev)
464 if (rdev->wb.wb_obj == NULL) {
465 r = radeon_bo_create(rdev, RADEON_GPU_PAGE_SIZE, PAGE_SIZE, true,
466 RADEON_GEM_DOMAIN_GTT, 0, NULL, NULL,
469 dev_warn(rdev->dev, "(%d) create WB bo failed\n", r);
472 r = radeon_bo_reserve(rdev->wb.wb_obj, false);
473 if (unlikely(r != 0)) {
474 radeon_wb_fini(rdev);
477 r = radeon_bo_pin(rdev->wb.wb_obj, RADEON_GEM_DOMAIN_GTT,
480 radeon_bo_unreserve(rdev->wb.wb_obj);
481 dev_warn(rdev->dev, "(%d) pin WB bo failed\n", r);
482 radeon_wb_fini(rdev);
485 r = radeon_bo_kmap(rdev->wb.wb_obj, (void **)&rdev->wb.wb);
486 radeon_bo_unreserve(rdev->wb.wb_obj);
488 dev_warn(rdev->dev, "(%d) map WB bo failed\n", r);
489 radeon_wb_fini(rdev);
494 /* clear wb memory */
495 memset((char *)rdev->wb.wb, 0, RADEON_GPU_PAGE_SIZE);
496 /* disable event_write fences */
497 rdev->wb.use_event = false;
498 /* disabled via module param */
499 if (radeon_no_wb == 1) {
500 rdev->wb.enabled = false;
502 if (rdev->flags & RADEON_IS_AGP) {
503 /* often unreliable on AGP */
504 rdev->wb.enabled = false;
505 } else if (rdev->family < CHIP_R300) {
506 /* often unreliable on pre-r300 */
507 rdev->wb.enabled = false;
509 rdev->wb.enabled = true;
510 /* event_write fences are only available on r600+ */
511 if (rdev->family >= CHIP_R600) {
512 rdev->wb.use_event = true;
516 /* always use writeback/events on NI, APUs */
517 if (rdev->family >= CHIP_PALM) {
518 rdev->wb.enabled = true;
519 rdev->wb.use_event = true;
522 dev_info(rdev->dev, "WB %sabled\n", rdev->wb.enabled ? "en" : "dis");
528 * radeon_vram_location - try to find VRAM location
529 * @rdev: radeon device structure holding all necessary informations
530 * @mc: memory controller structure holding memory informations
531 * @base: base address at which to put VRAM
533 * Function will place try to place VRAM at base address provided
534 * as parameter (which is so far either PCI aperture address or
535 * for IGP TOM base address).
537 * If there is not enough space to fit the unvisible VRAM in the 32bits
538 * address space then we limit the VRAM size to the aperture.
540 * If we are using AGP and if the AGP aperture doesn't allow us to have
541 * room for all the VRAM than we restrict the VRAM to the PCI aperture
542 * size and print a warning.
544 * This function will never fails, worst case are limiting VRAM.
546 * Note: GTT start, end, size should be initialized before calling this
547 * function on AGP platform.
549 * Note 1: We don't explicitly enforce VRAM start to be aligned on VRAM size,
550 * this shouldn't be a problem as we are using the PCI aperture as a reference.
551 * Otherwise this would be needed for rv280, all r3xx, and all r4xx, but
554 * Note 2: we use mc_vram_size as on some board we need to program the mc to
555 * cover the whole aperture even if VRAM size is inferior to aperture size
556 * Novell bug 204882 + along with lots of ubuntu ones
558 * Note 3: when limiting vram it's safe to overwritte real_vram_size because
559 * we are not in case where real_vram_size is inferior to mc_vram_size (ie
560 * note afected by bogus hw of Novell bug 204882 + along with lots of ubuntu
563 * Note 4: IGP TOM addr should be the same as the aperture addr, we don't
564 * explicitly check for that thought.
566 * FIXME: when reducing VRAM size align new size on power of 2.
568 void radeon_vram_location(struct radeon_device *rdev, struct radeon_mc *mc, u64 base)
570 uint64_t limit = (uint64_t)radeon_vram_limit << 20;
572 mc->vram_start = base;
573 if (mc->mc_vram_size > (rdev->mc.mc_mask - base + 1)) {
574 dev_warn(rdev->dev, "limiting VRAM to PCI aperture size\n");
575 mc->real_vram_size = mc->aper_size;
576 mc->mc_vram_size = mc->aper_size;
578 mc->vram_end = mc->vram_start + mc->mc_vram_size - 1;
579 if (rdev->flags & RADEON_IS_AGP && mc->vram_end > mc->gtt_start && mc->vram_start <= mc->gtt_end) {
580 dev_warn(rdev->dev, "limiting VRAM to PCI aperture size\n");
581 mc->real_vram_size = mc->aper_size;
582 mc->mc_vram_size = mc->aper_size;
584 mc->vram_end = mc->vram_start + mc->mc_vram_size - 1;
585 if (limit && limit < mc->real_vram_size)
586 mc->real_vram_size = limit;
587 dev_info(rdev->dev, "VRAM: %lluM 0x%016llX - 0x%016llX (%lluM used)\n",
588 mc->mc_vram_size >> 20, mc->vram_start,
589 mc->vram_end, mc->real_vram_size >> 20);
593 * radeon_gtt_location - try to find GTT location
594 * @rdev: radeon device structure holding all necessary informations
595 * @mc: memory controller structure holding memory informations
597 * Function will place try to place GTT before or after VRAM.
599 * If GTT size is bigger than space left then we ajust GTT size.
600 * Thus function will never fails.
602 * FIXME: when reducing GTT size align new size on power of 2.
604 void radeon_gtt_location(struct radeon_device *rdev, struct radeon_mc *mc)
606 u64 size_af, size_bf;
608 size_af = ((rdev->mc.mc_mask - mc->vram_end) + mc->gtt_base_align) & ~mc->gtt_base_align;
609 size_bf = mc->vram_start & ~mc->gtt_base_align;
610 if (size_bf > size_af) {
611 if (mc->gtt_size > size_bf) {
612 dev_warn(rdev->dev, "limiting GTT\n");
613 mc->gtt_size = size_bf;
615 mc->gtt_start = (mc->vram_start & ~mc->gtt_base_align) - mc->gtt_size;
617 if (mc->gtt_size > size_af) {
618 dev_warn(rdev->dev, "limiting GTT\n");
619 mc->gtt_size = size_af;
621 mc->gtt_start = (mc->vram_end + 1 + mc->gtt_base_align) & ~mc->gtt_base_align;
623 mc->gtt_end = mc->gtt_start + mc->gtt_size - 1;
624 dev_info(rdev->dev, "GTT: %lluM 0x%016llX - 0x%016llX\n",
625 mc->gtt_size >> 20, mc->gtt_start, mc->gtt_end);
629 * GPU helpers function.
633 * radeon_device_is_virtual - check if we are running is a virtual environment
635 * Check if the asic has been passed through to a VM (all asics).
636 * Used at driver startup.
637 * Returns true if virtual or false if not.
639 bool radeon_device_is_virtual(void)
642 return boot_cpu_has(X86_FEATURE_HYPERVISOR);
649 * radeon_card_posted - check if the hw has already been initialized
651 * @rdev: radeon_device pointer
653 * Check if the asic has been initialized (all asics).
654 * Used at driver startup.
655 * Returns true if initialized or false if not.
657 bool radeon_card_posted(struct radeon_device *rdev)
661 /* for pass through, always force asic_init for CI */
662 if (rdev->family >= CHIP_BONAIRE &&
663 radeon_device_is_virtual())
666 /* required for EFI mode on macbook2,1 which uses an r5xx asic */
667 if (efi_enabled(EFI_BOOT) &&
668 (rdev->pdev->subsystem_vendor == PCI_VENDOR_ID_APPLE) &&
669 (rdev->family < CHIP_R600))
672 if (ASIC_IS_NODCE(rdev))
675 /* first check CRTCs */
676 if (ASIC_IS_DCE4(rdev)) {
677 reg = RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC0_REGISTER_OFFSET) |
678 RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC1_REGISTER_OFFSET);
679 if (rdev->num_crtc >= 4) {
680 reg |= RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC2_REGISTER_OFFSET) |
681 RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC3_REGISTER_OFFSET);
683 if (rdev->num_crtc >= 6) {
684 reg |= RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC4_REGISTER_OFFSET) |
685 RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC5_REGISTER_OFFSET);
687 if (reg & EVERGREEN_CRTC_MASTER_EN)
689 } else if (ASIC_IS_AVIVO(rdev)) {
690 reg = RREG32(AVIVO_D1CRTC_CONTROL) |
691 RREG32(AVIVO_D2CRTC_CONTROL);
692 if (reg & AVIVO_CRTC_EN) {
696 reg = RREG32(RADEON_CRTC_GEN_CNTL) |
697 RREG32(RADEON_CRTC2_GEN_CNTL);
698 if (reg & RADEON_CRTC_EN) {
704 /* then check MEM_SIZE, in case the crtcs are off */
705 if (rdev->family >= CHIP_R600)
706 reg = RREG32(R600_CONFIG_MEMSIZE);
708 reg = RREG32(RADEON_CONFIG_MEMSIZE);
718 * radeon_update_bandwidth_info - update display bandwidth params
720 * @rdev: radeon_device pointer
722 * Used when sclk/mclk are switched or display modes are set.
723 * params are used to calculate display watermarks (all asics)
725 void radeon_update_bandwidth_info(struct radeon_device *rdev)
728 u32 sclk = rdev->pm.current_sclk;
729 u32 mclk = rdev->pm.current_mclk;
731 /* sclk/mclk in Mhz */
732 a.full = dfixed_const(100);
733 rdev->pm.sclk.full = dfixed_const(sclk);
734 rdev->pm.sclk.full = dfixed_div(rdev->pm.sclk, a);
735 rdev->pm.mclk.full = dfixed_const(mclk);
736 rdev->pm.mclk.full = dfixed_div(rdev->pm.mclk, a);
738 if (rdev->flags & RADEON_IS_IGP) {
739 a.full = dfixed_const(16);
740 /* core_bandwidth = sclk(Mhz) * 16 */
741 rdev->pm.core_bandwidth.full = dfixed_div(rdev->pm.sclk, a);
746 * radeon_boot_test_post_card - check and possibly initialize the hw
748 * @rdev: radeon_device pointer
750 * Check if the asic is initialized and if not, attempt to initialize
752 * Returns true if initialized or false if not.
754 bool radeon_boot_test_post_card(struct radeon_device *rdev)
756 if (radeon_card_posted(rdev))
760 DRM_INFO("GPU not posted. posting now...\n");
761 if (rdev->is_atom_bios)
762 atom_asic_init(rdev->mode_info.atom_context);
764 radeon_combios_asic_init(rdev_to_drm(rdev));
767 dev_err(rdev->dev, "Card not posted and no BIOS - ignoring\n");
773 * radeon_dummy_page_init - init dummy page used by the driver
775 * @rdev: radeon_device pointer
777 * Allocate the dummy page used by the driver (all asics).
778 * This dummy page is used by the driver as a filler for gart entries
779 * when pages are taken out of the GART
780 * Returns 0 on sucess, -ENOMEM on failure.
782 int radeon_dummy_page_init(struct radeon_device *rdev)
784 if (rdev->dummy_page.page)
786 rdev->dummy_page.page = alloc_page(GFP_DMA32 | GFP_KERNEL | __GFP_ZERO);
787 if (rdev->dummy_page.page == NULL)
789 rdev->dummy_page.addr = dma_map_page(&rdev->pdev->dev, rdev->dummy_page.page,
790 0, PAGE_SIZE, DMA_BIDIRECTIONAL);
791 if (dma_mapping_error(&rdev->pdev->dev, rdev->dummy_page.addr)) {
792 dev_err(&rdev->pdev->dev, "Failed to DMA MAP the dummy page\n");
793 __free_page(rdev->dummy_page.page);
794 rdev->dummy_page.page = NULL;
797 rdev->dummy_page.entry = radeon_gart_get_page_entry(rdev->dummy_page.addr,
798 RADEON_GART_PAGE_DUMMY);
803 * radeon_dummy_page_fini - free dummy page used by the driver
805 * @rdev: radeon_device pointer
807 * Frees the dummy page used by the driver (all asics).
809 void radeon_dummy_page_fini(struct radeon_device *rdev)
811 if (rdev->dummy_page.page == NULL)
813 dma_unmap_page(&rdev->pdev->dev, rdev->dummy_page.addr, PAGE_SIZE,
815 __free_page(rdev->dummy_page.page);
816 rdev->dummy_page.page = NULL;
820 /* ATOM accessor methods */
822 * ATOM is an interpreted byte code stored in tables in the vbios. The
823 * driver registers callbacks to access registers and the interpreter
824 * in the driver parses the tables and executes then to program specific
825 * actions (set display modes, asic init, etc.). See radeon_atombios.c,
826 * atombios.h, and atom.c
830 * cail_pll_read - read PLL register
832 * @info: atom card_info pointer
833 * @reg: PLL register offset
835 * Provides a PLL register accessor for the atom interpreter (r4xx+).
836 * Returns the value of the PLL register.
838 static uint32_t cail_pll_read(struct card_info *info, uint32_t reg)
840 struct radeon_device *rdev = info->dev->dev_private;
843 r = rdev->pll_rreg(rdev, reg);
848 * cail_pll_write - write PLL register
850 * @info: atom card_info pointer
851 * @reg: PLL register offset
852 * @val: value to write to the pll register
854 * Provides a PLL register accessor for the atom interpreter (r4xx+).
856 static void cail_pll_write(struct card_info *info, uint32_t reg, uint32_t val)
858 struct radeon_device *rdev = info->dev->dev_private;
860 rdev->pll_wreg(rdev, reg, val);
864 * cail_mc_read - read MC (Memory Controller) register
866 * @info: atom card_info pointer
867 * @reg: MC register offset
869 * Provides an MC register accessor for the atom interpreter (r4xx+).
870 * Returns the value of the MC register.
872 static uint32_t cail_mc_read(struct card_info *info, uint32_t reg)
874 struct radeon_device *rdev = info->dev->dev_private;
877 r = rdev->mc_rreg(rdev, reg);
882 * cail_mc_write - write MC (Memory Controller) register
884 * @info: atom card_info pointer
885 * @reg: MC register offset
886 * @val: value to write to the pll register
888 * Provides a MC register accessor for the atom interpreter (r4xx+).
890 static void cail_mc_write(struct card_info *info, uint32_t reg, uint32_t val)
892 struct radeon_device *rdev = info->dev->dev_private;
894 rdev->mc_wreg(rdev, reg, val);
898 * cail_reg_write - write MMIO register
900 * @info: atom card_info pointer
901 * @reg: MMIO register offset
902 * @val: value to write to the pll register
904 * Provides a MMIO register accessor for the atom interpreter (r4xx+).
906 static void cail_reg_write(struct card_info *info, uint32_t reg, uint32_t val)
908 struct radeon_device *rdev = info->dev->dev_private;
914 * cail_reg_read - read MMIO register
916 * @info: atom card_info pointer
917 * @reg: MMIO register offset
919 * Provides an MMIO register accessor for the atom interpreter (r4xx+).
920 * Returns the value of the MMIO register.
922 static uint32_t cail_reg_read(struct card_info *info, uint32_t reg)
924 struct radeon_device *rdev = info->dev->dev_private;
932 * cail_ioreg_write - write IO register
934 * @info: atom card_info pointer
935 * @reg: IO register offset
936 * @val: value to write to the pll register
938 * Provides a IO register accessor for the atom interpreter (r4xx+).
940 static void cail_ioreg_write(struct card_info *info, uint32_t reg, uint32_t val)
942 struct radeon_device *rdev = info->dev->dev_private;
944 WREG32_IO(reg*4, val);
948 * cail_ioreg_read - read IO register
950 * @info: atom card_info pointer
951 * @reg: IO register offset
953 * Provides an IO register accessor for the atom interpreter (r4xx+).
954 * Returns the value of the IO register.
956 static uint32_t cail_ioreg_read(struct card_info *info, uint32_t reg)
958 struct radeon_device *rdev = info->dev->dev_private;
961 r = RREG32_IO(reg*4);
966 * radeon_atombios_init - init the driver info and callbacks for atombios
968 * @rdev: radeon_device pointer
970 * Initializes the driver info and register access callbacks for the
971 * ATOM interpreter (r4xx+).
972 * Returns 0 on sucess, -ENOMEM on failure.
973 * Called at driver startup.
975 int radeon_atombios_init(struct radeon_device *rdev)
977 struct card_info *atom_card_info =
978 kzalloc(sizeof(struct card_info), GFP_KERNEL);
983 rdev->mode_info.atom_card_info = atom_card_info;
984 atom_card_info->dev = rdev_to_drm(rdev);
985 atom_card_info->reg_read = cail_reg_read;
986 atom_card_info->reg_write = cail_reg_write;
987 /* needed for iio ops */
989 atom_card_info->ioreg_read = cail_ioreg_read;
990 atom_card_info->ioreg_write = cail_ioreg_write;
992 DRM_ERROR("Unable to find PCI I/O BAR; using MMIO for ATOM IIO\n");
993 atom_card_info->ioreg_read = cail_reg_read;
994 atom_card_info->ioreg_write = cail_reg_write;
996 atom_card_info->mc_read = cail_mc_read;
997 atom_card_info->mc_write = cail_mc_write;
998 atom_card_info->pll_read = cail_pll_read;
999 atom_card_info->pll_write = cail_pll_write;
1001 rdev->mode_info.atom_context = atom_parse(atom_card_info, rdev->bios);
1002 if (!rdev->mode_info.atom_context) {
1003 radeon_atombios_fini(rdev);
1007 mutex_init(&rdev->mode_info.atom_context->mutex);
1008 mutex_init(&rdev->mode_info.atom_context->scratch_mutex);
1009 radeon_atom_initialize_bios_scratch_regs(rdev_to_drm(rdev));
1010 atom_allocate_fb_scratch(rdev->mode_info.atom_context);
1015 * radeon_atombios_fini - free the driver info and callbacks for atombios
1017 * @rdev: radeon_device pointer
1019 * Frees the driver info and register access callbacks for the ATOM
1020 * interpreter (r4xx+).
1021 * Called at driver shutdown.
1023 void radeon_atombios_fini(struct radeon_device *rdev)
1025 if (rdev->mode_info.atom_context) {
1026 kfree(rdev->mode_info.atom_context->scratch);
1027 kfree(rdev->mode_info.atom_context->iio);
1029 kfree(rdev->mode_info.atom_context);
1030 rdev->mode_info.atom_context = NULL;
1031 kfree(rdev->mode_info.atom_card_info);
1032 rdev->mode_info.atom_card_info = NULL;
1037 * COMBIOS is the bios format prior to ATOM. It provides
1038 * command tables similar to ATOM, but doesn't have a unified
1039 * parser. See radeon_combios.c
1043 * radeon_combios_init - init the driver info for combios
1045 * @rdev: radeon_device pointer
1047 * Initializes the driver info for combios (r1xx-r3xx).
1048 * Returns 0 on sucess.
1049 * Called at driver startup.
1051 int radeon_combios_init(struct radeon_device *rdev)
1053 radeon_combios_initialize_bios_scratch_regs(rdev_to_drm(rdev));
1058 * radeon_combios_fini - free the driver info for combios
1060 * @rdev: radeon_device pointer
1062 * Frees the driver info for combios (r1xx-r3xx).
1063 * Called at driver shutdown.
1065 void radeon_combios_fini(struct radeon_device *rdev)
1069 /* if we get transitioned to only one device, take VGA back */
1071 * radeon_vga_set_decode - enable/disable vga decode
1074 * @state: enable/disable vga decode
1076 * Enable/disable vga decode (all asics).
1077 * Returns VGA resource flags.
1079 static unsigned int radeon_vga_set_decode(struct pci_dev *pdev, bool state)
1081 struct drm_device *dev = pci_get_drvdata(pdev);
1082 struct radeon_device *rdev = dev->dev_private;
1083 radeon_vga_set_state(rdev, state);
1085 return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
1086 VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
1088 return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
1092 * radeon_gart_size_auto - Determine a sensible default GART size
1093 * according to ASIC family.
1095 * @family: ASIC family name
1097 static int radeon_gart_size_auto(enum radeon_family family)
1099 /* default to a larger gart size on newer asics */
1100 if (family >= CHIP_TAHITI)
1102 else if (family >= CHIP_RV770)
1109 * radeon_check_arguments - validate module params
1111 * @rdev: radeon_device pointer
1113 * Validates certain module parameters and updates
1114 * the associated values used by the driver (all asics).
1116 static void radeon_check_arguments(struct radeon_device *rdev)
1118 /* vramlimit must be a power of two */
1119 if (radeon_vram_limit != 0 && !is_power_of_2(radeon_vram_limit)) {
1120 dev_warn(rdev->dev, "vram limit (%d) must be a power of 2\n",
1122 radeon_vram_limit = 0;
1125 if (radeon_gart_size == -1) {
1126 radeon_gart_size = radeon_gart_size_auto(rdev->family);
1128 /* gtt size must be power of two and greater or equal to 32M */
1129 if (radeon_gart_size < 32) {
1130 dev_warn(rdev->dev, "gart size (%d) too small\n",
1132 radeon_gart_size = radeon_gart_size_auto(rdev->family);
1133 } else if (!is_power_of_2(radeon_gart_size)) {
1134 dev_warn(rdev->dev, "gart size (%d) must be a power of 2\n",
1136 radeon_gart_size = radeon_gart_size_auto(rdev->family);
1138 rdev->mc.gtt_size = (uint64_t)radeon_gart_size << 20;
1140 /* AGP mode can only be -1, 1, 2, 4, 8 */
1141 switch (radeon_agpmode) {
1150 dev_warn(rdev->dev, "invalid AGP mode %d (valid mode: "
1151 "-1, 0, 1, 2, 4, 8)\n", radeon_agpmode);
1156 if (!is_power_of_2(radeon_vm_size)) {
1157 dev_warn(rdev->dev, "VM size (%d) must be a power of 2\n",
1162 if (radeon_vm_size < 1) {
1163 dev_warn(rdev->dev, "VM size (%d) too small, min is 1GB\n",
1169 * Max GPUVM size for Cayman, SI and CI are 40 bits.
1171 if (radeon_vm_size > 1024) {
1172 dev_warn(rdev->dev, "VM size (%d) too large, max is 1TB\n",
1177 /* defines number of bits in page table versus page directory,
1178 * a page is 4KB so we have 12 bits offset, minimum 9 bits in the
1179 * page table and the remaining bits are in the page directory */
1180 if (radeon_vm_block_size == -1) {
1182 /* Total bits covered by PD + PTs */
1183 unsigned bits = ilog2(radeon_vm_size) + 18;
1185 /* Make sure the PD is 4K in size up to 8GB address space.
1186 Above that split equal between PD and PTs */
1187 if (radeon_vm_size <= 8)
1188 radeon_vm_block_size = bits - 9;
1190 radeon_vm_block_size = (bits + 3) / 2;
1192 } else if (radeon_vm_block_size < 9) {
1193 dev_warn(rdev->dev, "VM page table size (%d) too small\n",
1194 radeon_vm_block_size);
1195 radeon_vm_block_size = 9;
1198 if (radeon_vm_block_size > 24 ||
1199 (radeon_vm_size * 1024) < (1ull << radeon_vm_block_size)) {
1200 dev_warn(rdev->dev, "VM page table size (%d) too large\n",
1201 radeon_vm_block_size);
1202 radeon_vm_block_size = 9;
1207 * radeon_switcheroo_set_state - set switcheroo state
1209 * @pdev: pci dev pointer
1210 * @state: vga_switcheroo state
1212 * Callback for the switcheroo driver. Suspends or resumes
1213 * the asics before or after it is powered up using ACPI methods.
1215 static void radeon_switcheroo_set_state(struct pci_dev *pdev, enum vga_switcheroo_state state)
1217 struct drm_device *dev = pci_get_drvdata(pdev);
1219 if (radeon_is_px(dev) && state == VGA_SWITCHEROO_OFF)
1222 if (state == VGA_SWITCHEROO_ON) {
1223 pr_info("radeon: switched on\n");
1224 /* don't suspend or resume card normally */
1225 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
1227 radeon_resume_kms(dev, true, true);
1229 dev->switch_power_state = DRM_SWITCH_POWER_ON;
1230 drm_kms_helper_poll_enable(dev);
1232 pr_info("radeon: switched off\n");
1233 drm_kms_helper_poll_disable(dev);
1234 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
1235 radeon_suspend_kms(dev, true, true, false);
1236 dev->switch_power_state = DRM_SWITCH_POWER_OFF;
1241 * radeon_switcheroo_can_switch - see if switcheroo state can change
1243 * @pdev: pci dev pointer
1245 * Callback for the switcheroo driver. Check of the switcheroo
1246 * state can be changed.
1247 * Returns true if the state can be changed, false if not.
1249 static bool radeon_switcheroo_can_switch(struct pci_dev *pdev)
1251 struct drm_device *dev = pci_get_drvdata(pdev);
1254 * FIXME: open_count is protected by drm_global_mutex but that would lead to
1255 * locking inversion with the driver load path. And the access here is
1256 * completely racy anyway. So don't bother with locking for now.
1258 return atomic_read(&dev->open_count) == 0;
1261 static const struct vga_switcheroo_client_ops radeon_switcheroo_ops = {
1262 .set_gpu_state = radeon_switcheroo_set_state,
1264 .can_switch = radeon_switcheroo_can_switch,
1268 * radeon_device_init - initialize the driver
1270 * @rdev: radeon_device pointer
1271 * @ddev: drm dev pointer
1272 * @pdev: pci dev pointer
1273 * @flags: driver flags
1275 * Initializes the driver info and hw (all asics).
1276 * Returns 0 for success or an error on failure.
1277 * Called at driver startup.
1279 int radeon_device_init(struct radeon_device *rdev,
1280 struct drm_device *ddev,
1281 struct pci_dev *pdev,
1286 bool runtime = false;
1288 rdev->shutdown = false;
1289 rdev->flags = flags;
1290 rdev->family = flags & RADEON_FAMILY_MASK;
1291 rdev->is_atom_bios = false;
1292 rdev->usec_timeout = RADEON_MAX_USEC_TIMEOUT;
1293 rdev->mc.gtt_size = 512 * 1024 * 1024;
1294 rdev->accel_working = false;
1295 /* set up ring ids */
1296 for (i = 0; i < RADEON_NUM_RINGS; i++) {
1297 rdev->ring[i].idx = i;
1299 rdev->fence_context = dma_fence_context_alloc(RADEON_NUM_RINGS);
1301 DRM_INFO("initializing kernel modesetting (%s 0x%04X:0x%04X 0x%04X:0x%04X 0x%02X).\n",
1302 radeon_family_name[rdev->family], pdev->vendor, pdev->device,
1303 pdev->subsystem_vendor, pdev->subsystem_device, pdev->revision);
1305 /* mutex initialization are all done here so we
1306 * can recall function without having locking issues */
1307 mutex_init(&rdev->ring_lock);
1308 mutex_init(&rdev->dc_hw_i2c_mutex);
1309 atomic_set(&rdev->ih.lock, 0);
1310 mutex_init(&rdev->gem.mutex);
1311 mutex_init(&rdev->pm.mutex);
1312 mutex_init(&rdev->gpu_clock_mutex);
1313 mutex_init(&rdev->srbm_mutex);
1314 mutex_init(&rdev->audio.component_mutex);
1315 init_rwsem(&rdev->pm.mclk_lock);
1316 init_rwsem(&rdev->exclusive_lock);
1317 init_waitqueue_head(&rdev->irq.vblank_queue);
1318 r = radeon_gem_init(rdev);
1322 radeon_check_arguments(rdev);
1323 /* Adjust VM size here.
1324 * Max GPUVM size for cayman+ is 40 bits.
1326 rdev->vm_manager.max_pfn = radeon_vm_size << 18;
1328 /* Set asic functions */
1329 r = radeon_asic_init(rdev);
1333 /* all of the newer IGP chips have an internal gart
1334 * However some rs4xx report as AGP, so remove that here.
1336 if ((rdev->family >= CHIP_RS400) &&
1337 (rdev->flags & RADEON_IS_IGP)) {
1338 rdev->flags &= ~RADEON_IS_AGP;
1341 if (rdev->flags & RADEON_IS_AGP && radeon_agpmode == -1) {
1342 radeon_agp_disable(rdev);
1345 /* Set the internal MC address mask
1346 * This is the max address of the GPU's
1347 * internal address space.
1349 if (rdev->family >= CHIP_CAYMAN)
1350 rdev->mc.mc_mask = 0xffffffffffULL; /* 40 bit MC */
1351 else if (rdev->family >= CHIP_CEDAR)
1352 rdev->mc.mc_mask = 0xfffffffffULL; /* 36 bit MC */
1354 rdev->mc.mc_mask = 0xffffffffULL; /* 32 bit MC */
1357 * PCIE - can handle 40-bits.
1358 * IGP - can handle 40-bits
1359 * AGP - generally dma32 is safest
1360 * PCI - dma32 for legacy pci gart, 40 bits on newer asics
1363 if (rdev->flags & RADEON_IS_AGP)
1365 if ((rdev->flags & RADEON_IS_PCI) &&
1366 (rdev->family <= CHIP_RS740))
1369 if (rdev->family == CHIP_CEDAR)
1373 r = dma_set_mask_and_coherent(&rdev->pdev->dev, DMA_BIT_MASK(dma_bits));
1375 pr_warn("radeon: No suitable DMA available\n");
1378 rdev->need_swiotlb = drm_need_swiotlb(dma_bits);
1380 /* Registers mapping */
1381 /* TODO: block userspace mapping of io register */
1382 spin_lock_init(&rdev->mmio_idx_lock);
1383 spin_lock_init(&rdev->smc_idx_lock);
1384 spin_lock_init(&rdev->pll_idx_lock);
1385 spin_lock_init(&rdev->mc_idx_lock);
1386 spin_lock_init(&rdev->pcie_idx_lock);
1387 spin_lock_init(&rdev->pciep_idx_lock);
1388 spin_lock_init(&rdev->pif_idx_lock);
1389 spin_lock_init(&rdev->cg_idx_lock);
1390 spin_lock_init(&rdev->uvd_idx_lock);
1391 spin_lock_init(&rdev->rcu_idx_lock);
1392 spin_lock_init(&rdev->didt_idx_lock);
1393 spin_lock_init(&rdev->end_idx_lock);
1394 if (rdev->family >= CHIP_BONAIRE) {
1395 rdev->rmmio_base = pci_resource_start(rdev->pdev, 5);
1396 rdev->rmmio_size = pci_resource_len(rdev->pdev, 5);
1398 rdev->rmmio_base = pci_resource_start(rdev->pdev, 2);
1399 rdev->rmmio_size = pci_resource_len(rdev->pdev, 2);
1401 rdev->rmmio = ioremap(rdev->rmmio_base, rdev->rmmio_size);
1402 if (rdev->rmmio == NULL)
1405 /* doorbell bar mapping */
1406 if (rdev->family >= CHIP_BONAIRE)
1407 radeon_doorbell_init(rdev);
1409 /* io port mapping */
1410 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
1411 if (pci_resource_flags(rdev->pdev, i) & IORESOURCE_IO) {
1412 rdev->rio_mem_size = pci_resource_len(rdev->pdev, i);
1413 rdev->rio_mem = pci_iomap(rdev->pdev, i, rdev->rio_mem_size);
1417 if (rdev->rio_mem == NULL)
1418 DRM_ERROR("Unable to find PCI I/O BAR\n");
1420 if (rdev->flags & RADEON_IS_PX)
1421 radeon_device_handle_px_quirks(rdev);
1423 /* if we have > 1 VGA cards, then disable the radeon VGA resources */
1424 /* this will fail for cards that aren't VGA class devices, just
1426 vga_client_register(rdev->pdev, radeon_vga_set_decode);
1428 if (rdev->flags & RADEON_IS_PX)
1430 if (!pci_is_thunderbolt_attached(rdev->pdev))
1431 vga_switcheroo_register_client(rdev->pdev,
1432 &radeon_switcheroo_ops, runtime);
1434 vga_switcheroo_init_domain_pm_ops(rdev->dev, &rdev->vga_pm_domain);
1436 r = radeon_init(rdev);
1440 radeon_gem_debugfs_init(rdev);
1442 if (rdev->flags & RADEON_IS_AGP && !rdev->accel_working) {
1443 /* Acceleration not working on AGP card try again
1444 * with fallback to PCI or PCIE GART
1446 radeon_asic_reset(rdev);
1448 radeon_agp_disable(rdev);
1449 r = radeon_init(rdev);
1454 radeon_audio_component_init(rdev);
1456 r = radeon_ib_ring_tests(rdev);
1458 DRM_ERROR("ib ring test failed (%d).\n", r);
1461 * Turks/Thames GPU will freeze whole laptop if DPM is not restarted
1462 * after the CP ring have chew one packet at least. Hence here we stop
1463 * and restart DPM after the radeon_ib_ring_tests().
1465 if (rdev->pm.dpm_enabled &&
1466 (rdev->pm.pm_method == PM_METHOD_DPM) &&
1467 (rdev->family == CHIP_TURKS) &&
1468 (rdev->flags & RADEON_IS_MOBILITY)) {
1469 mutex_lock(&rdev->pm.mutex);
1470 radeon_dpm_disable(rdev);
1471 radeon_dpm_enable(rdev);
1472 mutex_unlock(&rdev->pm.mutex);
1475 if ((radeon_testing & 1)) {
1476 if (rdev->accel_working)
1477 radeon_test_moves(rdev);
1479 DRM_INFO("radeon: acceleration disabled, skipping move tests\n");
1481 if ((radeon_testing & 2)) {
1482 if (rdev->accel_working)
1483 radeon_test_syncing(rdev);
1485 DRM_INFO("radeon: acceleration disabled, skipping sync tests\n");
1487 if (radeon_benchmarking) {
1488 if (rdev->accel_working)
1489 radeon_benchmark(rdev, radeon_benchmarking);
1491 DRM_INFO("radeon: acceleration disabled, skipping benchmarks\n");
1496 /* balance pm_runtime_get_sync() in radeon_driver_unload_kms() */
1497 if (radeon_is_px(ddev))
1498 pm_runtime_put_noidle(ddev->dev);
1500 vga_switcheroo_fini_domain_pm_ops(rdev->dev);
1505 * radeon_device_fini - tear down the driver
1507 * @rdev: radeon_device pointer
1509 * Tear down the driver info (all asics).
1510 * Called at driver shutdown.
1512 void radeon_device_fini(struct radeon_device *rdev)
1514 DRM_INFO("radeon: finishing device.\n");
1515 rdev->shutdown = true;
1516 /* evict vram memory */
1517 radeon_bo_evict_vram(rdev);
1518 radeon_audio_component_fini(rdev);
1520 if (!pci_is_thunderbolt_attached(rdev->pdev))
1521 vga_switcheroo_unregister_client(rdev->pdev);
1522 if (rdev->flags & RADEON_IS_PX)
1523 vga_switcheroo_fini_domain_pm_ops(rdev->dev);
1524 vga_client_unregister(rdev->pdev);
1526 pci_iounmap(rdev->pdev, rdev->rio_mem);
1527 rdev->rio_mem = NULL;
1528 iounmap(rdev->rmmio);
1530 if (rdev->family >= CHIP_BONAIRE)
1531 radeon_doorbell_fini(rdev);
1539 * radeon_suspend_kms - initiate device suspend
1541 * Puts the hw in the suspend state (all asics).
1542 * Returns 0 for success or an error on failure.
1543 * Called at driver suspend.
1545 int radeon_suspend_kms(struct drm_device *dev, bool suspend,
1546 bool notify_clients, bool freeze)
1548 struct radeon_device *rdev;
1549 struct pci_dev *pdev;
1550 struct drm_crtc *crtc;
1551 struct drm_connector *connector;
1554 if (dev == NULL || dev->dev_private == NULL) {
1558 rdev = dev->dev_private;
1559 pdev = to_pci_dev(dev->dev);
1561 if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
1564 drm_kms_helper_poll_disable(dev);
1566 drm_modeset_lock_all(dev);
1567 /* turn off display hw */
1568 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1569 drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
1571 drm_modeset_unlock_all(dev);
1573 /* unpin the front buffers and cursors */
1574 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
1575 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
1576 struct drm_framebuffer *fb = crtc->primary->fb;
1577 struct radeon_bo *robj;
1579 if (radeon_crtc->cursor_bo) {
1580 struct radeon_bo *robj = gem_to_radeon_bo(radeon_crtc->cursor_bo);
1581 r = radeon_bo_reserve(robj, false);
1583 radeon_bo_unpin(robj);
1584 radeon_bo_unreserve(robj);
1588 if (fb == NULL || fb->obj[0] == NULL) {
1591 robj = gem_to_radeon_bo(fb->obj[0]);
1592 /* don't unpin kernel fb objects */
1593 if (!radeon_fbdev_robj_is_fb(rdev, robj)) {
1594 r = radeon_bo_reserve(robj, false);
1596 radeon_bo_unpin(robj);
1597 radeon_bo_unreserve(robj);
1601 /* evict vram memory */
1602 radeon_bo_evict_vram(rdev);
1604 /* wait for gpu to finish processing current batch */
1605 for (i = 0; i < RADEON_NUM_RINGS; i++) {
1606 r = radeon_fence_wait_empty(rdev, i);
1608 /* delay GPU reset to resume */
1609 radeon_fence_driver_force_completion(rdev, i);
1611 /* finish executing delayed work */
1612 flush_delayed_work(&rdev->fence_drv[i].lockup_work);
1616 radeon_save_bios_scratch_regs(rdev);
1618 radeon_suspend(rdev);
1619 radeon_hpd_fini(rdev);
1620 /* evict remaining vram memory
1621 * This second call to evict vram is to evict the gart page table
1624 radeon_bo_evict_vram(rdev);
1626 radeon_agp_suspend(rdev);
1628 pci_save_state(pdev);
1629 if (freeze && rdev->family >= CHIP_CEDAR && !(rdev->flags & RADEON_IS_IGP)) {
1630 rdev->asic->asic_reset(rdev, true);
1631 pci_restore_state(pdev);
1632 } else if (suspend) {
1633 /* Shut down the device */
1634 pci_disable_device(pdev);
1635 pci_set_power_state(pdev, PCI_D3hot);
1638 if (notify_clients) {
1640 drm_client_dev_suspend(dev, true);
1647 * radeon_resume_kms - initiate device resume
1649 * Bring the hw back to operating state (all asics).
1650 * Returns 0 for success or an error on failure.
1651 * Called at driver resume.
1653 int radeon_resume_kms(struct drm_device *dev, bool resume, bool notify_clients)
1655 struct drm_connector *connector;
1656 struct radeon_device *rdev = dev->dev_private;
1657 struct pci_dev *pdev = to_pci_dev(dev->dev);
1658 struct drm_crtc *crtc;
1661 if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
1664 if (notify_clients) {
1668 pci_set_power_state(pdev, PCI_D0);
1669 pci_restore_state(pdev);
1670 if (pci_enable_device(pdev)) {
1676 /* resume AGP if in use */
1677 radeon_agp_resume(rdev);
1678 radeon_resume(rdev);
1680 r = radeon_ib_ring_tests(rdev);
1682 DRM_ERROR("ib ring test failed (%d).\n", r);
1684 if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled) {
1685 /* do dpm late init */
1686 r = radeon_pm_late_init(rdev);
1688 rdev->pm.dpm_enabled = false;
1689 DRM_ERROR("radeon_pm_late_init failed, disabling dpm\n");
1692 /* resume old pm late */
1693 radeon_pm_resume(rdev);
1696 radeon_restore_bios_scratch_regs(rdev);
1699 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
1700 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
1702 if (radeon_crtc->cursor_bo) {
1703 struct radeon_bo *robj = gem_to_radeon_bo(radeon_crtc->cursor_bo);
1704 r = radeon_bo_reserve(robj, false);
1706 /* Only 27 bit offset for legacy cursor */
1707 r = radeon_bo_pin_restricted(robj,
1708 RADEON_GEM_DOMAIN_VRAM,
1709 ASIC_IS_AVIVO(rdev) ?
1711 &radeon_crtc->cursor_addr);
1713 DRM_ERROR("Failed to pin cursor BO (%d)\n", r);
1714 radeon_bo_unreserve(robj);
1719 /* init dig PHYs, disp eng pll */
1720 if (rdev->is_atom_bios) {
1721 radeon_atom_encoder_init(rdev);
1722 radeon_atom_disp_eng_pll_init(rdev);
1723 /* turn on the BL */
1724 if (rdev->mode_info.bl_encoder) {
1725 u8 bl_level = radeon_get_backlight_level(rdev,
1726 rdev->mode_info.bl_encoder);
1727 radeon_set_backlight_level(rdev, rdev->mode_info.bl_encoder,
1731 /* reset hpd state */
1732 radeon_hpd_init(rdev);
1733 /* blat the mode back in */
1734 if (notify_clients) {
1735 drm_helper_resume_force_mode(dev);
1736 /* turn on display hw */
1737 drm_modeset_lock_all(dev);
1738 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1739 drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
1741 drm_modeset_unlock_all(dev);
1744 drm_kms_helper_poll_enable(dev);
1746 /* set the power state here in case we are a PX system or headless */
1747 if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled)
1748 radeon_pm_compute_clocks(rdev);
1750 if (notify_clients) {
1751 drm_client_dev_resume(dev, true);
1759 * radeon_gpu_reset - reset the asic
1761 * @rdev: radeon device pointer
1763 * Attempt the reset the GPU if it has hung (all asics).
1764 * Returns 0 for success or an error on failure.
1766 int radeon_gpu_reset(struct radeon_device *rdev)
1768 unsigned ring_sizes[RADEON_NUM_RINGS];
1769 uint32_t *ring_data[RADEON_NUM_RINGS];
1775 down_write(&rdev->exclusive_lock);
1777 if (!rdev->needs_reset) {
1778 up_write(&rdev->exclusive_lock);
1782 atomic_inc(&rdev->gpu_reset_counter);
1784 radeon_save_bios_scratch_regs(rdev);
1785 radeon_suspend(rdev);
1786 radeon_hpd_fini(rdev);
1788 for (i = 0; i < RADEON_NUM_RINGS; ++i) {
1789 ring_sizes[i] = radeon_ring_backup(rdev, &rdev->ring[i],
1791 if (ring_sizes[i]) {
1793 dev_info(rdev->dev, "Saved %d dwords of commands "
1794 "on ring %d.\n", ring_sizes[i], i);
1798 r = radeon_asic_reset(rdev);
1800 dev_info(rdev->dev, "GPU reset succeeded, trying to resume\n");
1801 radeon_resume(rdev);
1804 radeon_restore_bios_scratch_regs(rdev);
1806 for (i = 0; i < RADEON_NUM_RINGS; ++i) {
1807 if (!r && ring_data[i]) {
1808 radeon_ring_restore(rdev, &rdev->ring[i],
1809 ring_sizes[i], ring_data[i]);
1811 radeon_fence_driver_force_completion(rdev, i);
1812 kfree(ring_data[i]);
1816 if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled) {
1817 /* do dpm late init */
1818 r = radeon_pm_late_init(rdev);
1820 rdev->pm.dpm_enabled = false;
1821 DRM_ERROR("radeon_pm_late_init failed, disabling dpm\n");
1824 /* resume old pm late */
1825 radeon_pm_resume(rdev);
1828 /* init dig PHYs, disp eng pll */
1829 if (rdev->is_atom_bios) {
1830 radeon_atom_encoder_init(rdev);
1831 radeon_atom_disp_eng_pll_init(rdev);
1832 /* turn on the BL */
1833 if (rdev->mode_info.bl_encoder) {
1834 u8 bl_level = radeon_get_backlight_level(rdev,
1835 rdev->mode_info.bl_encoder);
1836 radeon_set_backlight_level(rdev, rdev->mode_info.bl_encoder,
1840 /* reset hpd state */
1841 radeon_hpd_init(rdev);
1843 rdev->in_reset = true;
1844 rdev->needs_reset = false;
1846 downgrade_write(&rdev->exclusive_lock);
1848 drm_helper_resume_force_mode(rdev_to_drm(rdev));
1850 /* set the power state here in case we are a PX system or headless */
1851 if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled)
1852 radeon_pm_compute_clocks(rdev);
1855 r = radeon_ib_ring_tests(rdev);
1859 /* bad news, how to tell it to userspace ? */
1860 dev_info(rdev->dev, "GPU reset failed\n");
1863 rdev->needs_reset = r == -EAGAIN;
1864 rdev->in_reset = false;
1866 up_read(&rdev->exclusive_lock);