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>
29 #include <linux/slab.h>
31 #include <drm/drm_crtc_helper.h>
32 #include <drm/radeon_drm.h>
33 #include <linux/pm_runtime.h>
34 #include <linux/vgaarb.h>
35 #include <linux/vga_switcheroo.h>
36 #include <linux/efi.h>
37 #include "radeon_reg.h"
41 static const char radeon_family_name[][16] = {
107 #define RADEON_PX_QUIRK_DISABLE_PX (1 << 0)
108 #define RADEON_PX_QUIRK_LONG_WAKEUP (1 << 1)
110 struct radeon_px_quirk {
118 static struct radeon_px_quirk radeon_px_quirk_list[] = {
119 /* Acer aspire 5560g (CPU: AMD A4-3305M; GPU: AMD Radeon HD 6480g + 7470m)
120 * https://bugzilla.kernel.org/show_bug.cgi?id=74551
122 { PCI_VENDOR_ID_ATI, 0x6760, 0x1025, 0x0672, RADEON_PX_QUIRK_DISABLE_PX },
123 /* Asus K73TA laptop with AMD A6-3400M APU and Radeon 6550 GPU
124 * https://bugzilla.kernel.org/show_bug.cgi?id=51381
126 { PCI_VENDOR_ID_ATI, 0x6741, 0x1043, 0x108c, RADEON_PX_QUIRK_DISABLE_PX },
127 /* Asus K53TK laptop with AMD A6-3420M APU and Radeon 7670m GPU
128 * https://bugzilla.kernel.org/show_bug.cgi?id=51381
130 { PCI_VENDOR_ID_ATI, 0x6840, 0x1043, 0x2122, RADEON_PX_QUIRK_DISABLE_PX },
131 /* macbook pro 8.2 */
132 { PCI_VENDOR_ID_ATI, 0x6741, PCI_VENDOR_ID_APPLE, 0x00e2, RADEON_PX_QUIRK_LONG_WAKEUP },
136 bool radeon_is_px(struct drm_device *dev)
138 struct radeon_device *rdev = dev->dev_private;
140 if (rdev->flags & RADEON_IS_PX)
145 static void radeon_device_handle_px_quirks(struct radeon_device *rdev)
147 struct radeon_px_quirk *p = radeon_px_quirk_list;
149 /* Apply PX quirks */
150 while (p && p->chip_device != 0) {
151 if (rdev->pdev->vendor == p->chip_vendor &&
152 rdev->pdev->device == p->chip_device &&
153 rdev->pdev->subsystem_vendor == p->subsys_vendor &&
154 rdev->pdev->subsystem_device == p->subsys_device) {
155 rdev->px_quirk_flags = p->px_quirk_flags;
161 if (rdev->px_quirk_flags & RADEON_PX_QUIRK_DISABLE_PX)
162 rdev->flags &= ~RADEON_IS_PX;
166 * radeon_program_register_sequence - program an array of registers.
168 * @rdev: radeon_device pointer
169 * @registers: pointer to the register array
170 * @array_size: size of the register array
172 * Programs an array or registers with and and or masks.
173 * This is a helper for setting golden registers.
175 void radeon_program_register_sequence(struct radeon_device *rdev,
176 const u32 *registers,
177 const u32 array_size)
179 u32 tmp, reg, and_mask, or_mask;
185 for (i = 0; i < array_size; i +=3) {
186 reg = registers[i + 0];
187 and_mask = registers[i + 1];
188 or_mask = registers[i + 2];
190 if (and_mask == 0xffffffff) {
201 void radeon_pci_config_reset(struct radeon_device *rdev)
203 pci_write_config_dword(rdev->pdev, 0x7c, RADEON_ASIC_RESET_DATA);
207 * radeon_surface_init - Clear GPU surface registers.
209 * @rdev: radeon_device pointer
211 * Clear GPU surface registers (r1xx-r5xx).
213 void radeon_surface_init(struct radeon_device *rdev)
215 /* FIXME: check this out */
216 if (rdev->family < CHIP_R600) {
219 for (i = 0; i < RADEON_GEM_MAX_SURFACES; i++) {
220 if (rdev->surface_regs[i].bo)
221 radeon_bo_get_surface_reg(rdev->surface_regs[i].bo);
223 radeon_clear_surface_reg(rdev, i);
225 /* enable surfaces */
226 WREG32(RADEON_SURFACE_CNTL, 0);
231 * GPU scratch registers helpers function.
234 * radeon_scratch_init - Init scratch register driver information.
236 * @rdev: radeon_device pointer
238 * Init CP scratch register driver information (r1xx-r5xx)
240 void radeon_scratch_init(struct radeon_device *rdev)
244 /* FIXME: check this out */
245 if (rdev->family < CHIP_R300) {
246 rdev->scratch.num_reg = 5;
248 rdev->scratch.num_reg = 7;
250 rdev->scratch.reg_base = RADEON_SCRATCH_REG0;
251 for (i = 0; i < rdev->scratch.num_reg; i++) {
252 rdev->scratch.free[i] = true;
253 rdev->scratch.reg[i] = rdev->scratch.reg_base + (i * 4);
258 * radeon_scratch_get - Allocate a scratch register
260 * @rdev: radeon_device pointer
261 * @reg: scratch register mmio offset
263 * Allocate a CP scratch register for use by the driver (all asics).
264 * Returns 0 on success or -EINVAL on failure.
266 int radeon_scratch_get(struct radeon_device *rdev, uint32_t *reg)
270 for (i = 0; i < rdev->scratch.num_reg; i++) {
271 if (rdev->scratch.free[i]) {
272 rdev->scratch.free[i] = false;
273 *reg = rdev->scratch.reg[i];
281 * radeon_scratch_free - Free a scratch register
283 * @rdev: radeon_device pointer
284 * @reg: scratch register mmio offset
286 * Free a CP scratch register allocated for use by the driver (all asics)
288 void radeon_scratch_free(struct radeon_device *rdev, uint32_t reg)
292 for (i = 0; i < rdev->scratch.num_reg; i++) {
293 if (rdev->scratch.reg[i] == reg) {
294 rdev->scratch.free[i] = true;
301 * GPU doorbell aperture helpers function.
304 * radeon_doorbell_init - Init doorbell driver information.
306 * @rdev: radeon_device pointer
308 * Init doorbell driver information (CIK)
309 * Returns 0 on success, error on failure.
311 static int radeon_doorbell_init(struct radeon_device *rdev)
313 /* doorbell bar mapping */
314 rdev->doorbell.base = pci_resource_start(rdev->pdev, 2);
315 rdev->doorbell.size = pci_resource_len(rdev->pdev, 2);
317 rdev->doorbell.num_doorbells = min_t(u32, rdev->doorbell.size / sizeof(u32), RADEON_MAX_DOORBELLS);
318 if (rdev->doorbell.num_doorbells == 0)
321 rdev->doorbell.ptr = ioremap(rdev->doorbell.base, rdev->doorbell.num_doorbells * sizeof(u32));
322 if (rdev->doorbell.ptr == NULL) {
325 DRM_INFO("doorbell mmio base: 0x%08X\n", (uint32_t)rdev->doorbell.base);
326 DRM_INFO("doorbell mmio size: %u\n", (unsigned)rdev->doorbell.size);
328 memset(&rdev->doorbell.used, 0, sizeof(rdev->doorbell.used));
334 * radeon_doorbell_fini - Tear down doorbell driver information.
336 * @rdev: radeon_device pointer
338 * Tear down doorbell driver information (CIK)
340 static void radeon_doorbell_fini(struct radeon_device *rdev)
342 iounmap(rdev->doorbell.ptr);
343 rdev->doorbell.ptr = NULL;
347 * radeon_doorbell_get - Allocate a doorbell entry
349 * @rdev: radeon_device pointer
350 * @doorbell: doorbell index
352 * Allocate a doorbell for use by the driver (all asics).
353 * Returns 0 on success or -EINVAL on failure.
355 int radeon_doorbell_get(struct radeon_device *rdev, u32 *doorbell)
357 unsigned long offset = find_first_zero_bit(rdev->doorbell.used, rdev->doorbell.num_doorbells);
358 if (offset < rdev->doorbell.num_doorbells) {
359 __set_bit(offset, rdev->doorbell.used);
368 * radeon_doorbell_free - Free a doorbell entry
370 * @rdev: radeon_device pointer
371 * @doorbell: doorbell index
373 * Free a doorbell allocated for use by the driver (all asics)
375 void radeon_doorbell_free(struct radeon_device *rdev, u32 doorbell)
377 if (doorbell < rdev->doorbell.num_doorbells)
378 __clear_bit(doorbell, rdev->doorbell.used);
382 * radeon_doorbell_get_kfd_info - Report doorbell configuration required to
385 * @rdev: radeon_device pointer
386 * @aperture_base: output returning doorbell aperture base physical address
387 * @aperture_size: output returning doorbell aperture size in bytes
388 * @start_offset: output returning # of doorbell bytes reserved for radeon.
390 * Radeon and the KFD share the doorbell aperture. Radeon sets it up,
391 * takes doorbells required for its own rings and reports the setup to KFD.
392 * Radeon reserved doorbells are at the start of the doorbell aperture.
394 void radeon_doorbell_get_kfd_info(struct radeon_device *rdev,
395 phys_addr_t *aperture_base,
396 size_t *aperture_size,
397 size_t *start_offset)
399 /* The first num_doorbells are used by radeon.
400 * KFD takes whatever's left in the aperture. */
401 if (rdev->doorbell.size > rdev->doorbell.num_doorbells * sizeof(u32)) {
402 *aperture_base = rdev->doorbell.base;
403 *aperture_size = rdev->doorbell.size;
404 *start_offset = rdev->doorbell.num_doorbells * sizeof(u32);
414 * Writeback is the the method by which the the GPU updates special pages
415 * in memory with the status of certain GPU events (fences, ring pointers,
420 * radeon_wb_disable - Disable Writeback
422 * @rdev: radeon_device pointer
424 * Disables Writeback (all asics). Used for suspend.
426 void radeon_wb_disable(struct radeon_device *rdev)
428 rdev->wb.enabled = false;
432 * radeon_wb_fini - Disable Writeback and free memory
434 * @rdev: radeon_device pointer
436 * Disables Writeback and frees the Writeback memory (all asics).
437 * Used at driver shutdown.
439 void radeon_wb_fini(struct radeon_device *rdev)
441 radeon_wb_disable(rdev);
442 if (rdev->wb.wb_obj) {
443 if (!radeon_bo_reserve(rdev->wb.wb_obj, false)) {
444 radeon_bo_kunmap(rdev->wb.wb_obj);
445 radeon_bo_unpin(rdev->wb.wb_obj);
446 radeon_bo_unreserve(rdev->wb.wb_obj);
448 radeon_bo_unref(&rdev->wb.wb_obj);
450 rdev->wb.wb_obj = NULL;
455 * radeon_wb_init- Init Writeback driver info and allocate memory
457 * @rdev: radeon_device pointer
459 * Disables Writeback and frees the Writeback memory (all asics).
460 * Used at driver startup.
461 * Returns 0 on success or an -error on failure.
463 int radeon_wb_init(struct radeon_device *rdev)
467 if (rdev->wb.wb_obj == NULL) {
468 r = radeon_bo_create(rdev, RADEON_GPU_PAGE_SIZE, PAGE_SIZE, true,
469 RADEON_GEM_DOMAIN_GTT, 0, NULL, NULL,
472 dev_warn(rdev->dev, "(%d) create WB bo failed\n", r);
475 r = radeon_bo_reserve(rdev->wb.wb_obj, false);
476 if (unlikely(r != 0)) {
477 radeon_wb_fini(rdev);
480 r = radeon_bo_pin(rdev->wb.wb_obj, RADEON_GEM_DOMAIN_GTT,
483 radeon_bo_unreserve(rdev->wb.wb_obj);
484 dev_warn(rdev->dev, "(%d) pin WB bo failed\n", r);
485 radeon_wb_fini(rdev);
488 r = radeon_bo_kmap(rdev->wb.wb_obj, (void **)&rdev->wb.wb);
489 radeon_bo_unreserve(rdev->wb.wb_obj);
491 dev_warn(rdev->dev, "(%d) map WB bo failed\n", r);
492 radeon_wb_fini(rdev);
497 /* clear wb memory */
498 memset((char *)rdev->wb.wb, 0, RADEON_GPU_PAGE_SIZE);
499 /* disable event_write fences */
500 rdev->wb.use_event = false;
501 /* disabled via module param */
502 if (radeon_no_wb == 1) {
503 rdev->wb.enabled = false;
505 if (rdev->flags & RADEON_IS_AGP) {
506 /* often unreliable on AGP */
507 rdev->wb.enabled = false;
508 } else if (rdev->family < CHIP_R300) {
509 /* often unreliable on pre-r300 */
510 rdev->wb.enabled = false;
512 rdev->wb.enabled = true;
513 /* event_write fences are only available on r600+ */
514 if (rdev->family >= CHIP_R600) {
515 rdev->wb.use_event = true;
519 /* always use writeback/events on NI, APUs */
520 if (rdev->family >= CHIP_PALM) {
521 rdev->wb.enabled = true;
522 rdev->wb.use_event = true;
525 dev_info(rdev->dev, "WB %sabled\n", rdev->wb.enabled ? "en" : "dis");
531 * radeon_vram_location - try to find VRAM location
532 * @rdev: radeon device structure holding all necessary informations
533 * @mc: memory controller structure holding memory informations
534 * @base: base address at which to put VRAM
536 * Function will place try to place VRAM at base address provided
537 * as parameter (which is so far either PCI aperture address or
538 * for IGP TOM base address).
540 * If there is not enough space to fit the unvisible VRAM in the 32bits
541 * address space then we limit the VRAM size to the aperture.
543 * If we are using AGP and if the AGP aperture doesn't allow us to have
544 * room for all the VRAM than we restrict the VRAM to the PCI aperture
545 * size and print a warning.
547 * This function will never fails, worst case are limiting VRAM.
549 * Note: GTT start, end, size should be initialized before calling this
550 * function on AGP platform.
552 * Note: We don't explicitly enforce VRAM start to be aligned on VRAM size,
553 * this shouldn't be a problem as we are using the PCI aperture as a reference.
554 * Otherwise this would be needed for rv280, all r3xx, and all r4xx, but
557 * Note: we use mc_vram_size as on some board we need to program the mc to
558 * cover the whole aperture even if VRAM size is inferior to aperture size
559 * Novell bug 204882 + along with lots of ubuntu ones
561 * Note: when limiting vram it's safe to overwritte real_vram_size because
562 * we are not in case where real_vram_size is inferior to mc_vram_size (ie
563 * note afected by bogus hw of Novell bug 204882 + along with lots of ubuntu
566 * Note: IGP TOM addr should be the same as the aperture addr, we don't
567 * explicitly check for that thought.
569 * FIXME: when reducing VRAM size align new size on power of 2.
571 void radeon_vram_location(struct radeon_device *rdev, struct radeon_mc *mc, u64 base)
573 uint64_t limit = (uint64_t)radeon_vram_limit << 20;
575 mc->vram_start = base;
576 if (mc->mc_vram_size > (rdev->mc.mc_mask - base + 1)) {
577 dev_warn(rdev->dev, "limiting VRAM to PCI aperture size\n");
578 mc->real_vram_size = mc->aper_size;
579 mc->mc_vram_size = mc->aper_size;
581 mc->vram_end = mc->vram_start + mc->mc_vram_size - 1;
582 if (rdev->flags & RADEON_IS_AGP && mc->vram_end > mc->gtt_start && mc->vram_start <= mc->gtt_end) {
583 dev_warn(rdev->dev, "limiting VRAM to PCI aperture size\n");
584 mc->real_vram_size = mc->aper_size;
585 mc->mc_vram_size = mc->aper_size;
587 mc->vram_end = mc->vram_start + mc->mc_vram_size - 1;
588 if (limit && limit < mc->real_vram_size)
589 mc->real_vram_size = limit;
590 dev_info(rdev->dev, "VRAM: %lluM 0x%016llX - 0x%016llX (%lluM used)\n",
591 mc->mc_vram_size >> 20, mc->vram_start,
592 mc->vram_end, mc->real_vram_size >> 20);
596 * radeon_gtt_location - try to find GTT location
597 * @rdev: radeon device structure holding all necessary informations
598 * @mc: memory controller structure holding memory informations
600 * Function will place try to place GTT before or after VRAM.
602 * If GTT size is bigger than space left then we ajust GTT size.
603 * Thus function will never fails.
605 * FIXME: when reducing GTT size align new size on power of 2.
607 void radeon_gtt_location(struct radeon_device *rdev, struct radeon_mc *mc)
609 u64 size_af, size_bf;
611 size_af = ((rdev->mc.mc_mask - mc->vram_end) + mc->gtt_base_align) & ~mc->gtt_base_align;
612 size_bf = mc->vram_start & ~mc->gtt_base_align;
613 if (size_bf > size_af) {
614 if (mc->gtt_size > size_bf) {
615 dev_warn(rdev->dev, "limiting GTT\n");
616 mc->gtt_size = size_bf;
618 mc->gtt_start = (mc->vram_start & ~mc->gtt_base_align) - mc->gtt_size;
620 if (mc->gtt_size > size_af) {
621 dev_warn(rdev->dev, "limiting GTT\n");
622 mc->gtt_size = size_af;
624 mc->gtt_start = (mc->vram_end + 1 + mc->gtt_base_align) & ~mc->gtt_base_align;
626 mc->gtt_end = mc->gtt_start + mc->gtt_size - 1;
627 dev_info(rdev->dev, "GTT: %lluM 0x%016llX - 0x%016llX\n",
628 mc->gtt_size >> 20, mc->gtt_start, mc->gtt_end);
632 * GPU helpers function.
636 * radeon_device_is_virtual - check if we are running is a virtual environment
638 * Check if the asic has been passed through to a VM (all asics).
639 * Used at driver startup.
640 * Returns true if virtual or false if not.
642 bool radeon_device_is_virtual(void)
645 return boot_cpu_has(X86_FEATURE_HYPERVISOR);
652 * radeon_card_posted - check if the hw has already been initialized
654 * @rdev: radeon_device pointer
656 * Check if the asic has been initialized (all asics).
657 * Used at driver startup.
658 * Returns true if initialized or false if not.
660 bool radeon_card_posted(struct radeon_device *rdev)
664 /* for pass through, always force asic_init */
665 if (radeon_device_is_virtual())
668 /* required for EFI mode on macbook2,1 which uses an r5xx asic */
669 if (efi_enabled(EFI_BOOT) &&
670 (rdev->pdev->subsystem_vendor == PCI_VENDOR_ID_APPLE) &&
671 (rdev->family < CHIP_R600))
674 if (ASIC_IS_NODCE(rdev))
677 /* first check CRTCs */
678 if (ASIC_IS_DCE4(rdev)) {
679 reg = RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC0_REGISTER_OFFSET) |
680 RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC1_REGISTER_OFFSET);
681 if (rdev->num_crtc >= 4) {
682 reg |= RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC2_REGISTER_OFFSET) |
683 RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC3_REGISTER_OFFSET);
685 if (rdev->num_crtc >= 6) {
686 reg |= RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC4_REGISTER_OFFSET) |
687 RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC5_REGISTER_OFFSET);
689 if (reg & EVERGREEN_CRTC_MASTER_EN)
691 } else if (ASIC_IS_AVIVO(rdev)) {
692 reg = RREG32(AVIVO_D1CRTC_CONTROL) |
693 RREG32(AVIVO_D2CRTC_CONTROL);
694 if (reg & AVIVO_CRTC_EN) {
698 reg = RREG32(RADEON_CRTC_GEN_CNTL) |
699 RREG32(RADEON_CRTC2_GEN_CNTL);
700 if (reg & RADEON_CRTC_EN) {
706 /* then check MEM_SIZE, in case the crtcs are off */
707 if (rdev->family >= CHIP_R600)
708 reg = RREG32(R600_CONFIG_MEMSIZE);
710 reg = RREG32(RADEON_CONFIG_MEMSIZE);
720 * radeon_update_bandwidth_info - update display bandwidth params
722 * @rdev: radeon_device pointer
724 * Used when sclk/mclk are switched or display modes are set.
725 * params are used to calculate display watermarks (all asics)
727 void radeon_update_bandwidth_info(struct radeon_device *rdev)
730 u32 sclk = rdev->pm.current_sclk;
731 u32 mclk = rdev->pm.current_mclk;
733 /* sclk/mclk in Mhz */
734 a.full = dfixed_const(100);
735 rdev->pm.sclk.full = dfixed_const(sclk);
736 rdev->pm.sclk.full = dfixed_div(rdev->pm.sclk, a);
737 rdev->pm.mclk.full = dfixed_const(mclk);
738 rdev->pm.mclk.full = dfixed_div(rdev->pm.mclk, a);
740 if (rdev->flags & RADEON_IS_IGP) {
741 a.full = dfixed_const(16);
742 /* core_bandwidth = sclk(Mhz) * 16 */
743 rdev->pm.core_bandwidth.full = dfixed_div(rdev->pm.sclk, a);
748 * radeon_boot_test_post_card - check and possibly initialize the hw
750 * @rdev: radeon_device pointer
752 * Check if the asic is initialized and if not, attempt to initialize
754 * Returns true if initialized or false if not.
756 bool radeon_boot_test_post_card(struct radeon_device *rdev)
758 if (radeon_card_posted(rdev))
762 DRM_INFO("GPU not posted. posting now...\n");
763 if (rdev->is_atom_bios)
764 atom_asic_init(rdev->mode_info.atom_context);
766 radeon_combios_asic_init(rdev->ddev);
769 dev_err(rdev->dev, "Card not posted and no BIOS - ignoring\n");
775 * radeon_dummy_page_init - init dummy page used by the driver
777 * @rdev: radeon_device pointer
779 * Allocate the dummy page used by the driver (all asics).
780 * This dummy page is used by the driver as a filler for gart entries
781 * when pages are taken out of the GART
782 * Returns 0 on sucess, -ENOMEM on failure.
784 int radeon_dummy_page_init(struct radeon_device *rdev)
786 if (rdev->dummy_page.page)
788 rdev->dummy_page.page = alloc_page(GFP_DMA32 | GFP_KERNEL | __GFP_ZERO);
789 if (rdev->dummy_page.page == NULL)
791 rdev->dummy_page.addr = pci_map_page(rdev->pdev, rdev->dummy_page.page,
792 0, PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
793 if (pci_dma_mapping_error(rdev->pdev, rdev->dummy_page.addr)) {
794 dev_err(&rdev->pdev->dev, "Failed to DMA MAP the dummy page\n");
795 __free_page(rdev->dummy_page.page);
796 rdev->dummy_page.page = NULL;
799 rdev->dummy_page.entry = radeon_gart_get_page_entry(rdev->dummy_page.addr,
800 RADEON_GART_PAGE_DUMMY);
805 * radeon_dummy_page_fini - free dummy page used by the driver
807 * @rdev: radeon_device pointer
809 * Frees the dummy page used by the driver (all asics).
811 void radeon_dummy_page_fini(struct radeon_device *rdev)
813 if (rdev->dummy_page.page == NULL)
815 pci_unmap_page(rdev->pdev, rdev->dummy_page.addr,
816 PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
817 __free_page(rdev->dummy_page.page);
818 rdev->dummy_page.page = NULL;
822 /* ATOM accessor methods */
824 * ATOM is an interpreted byte code stored in tables in the vbios. The
825 * driver registers callbacks to access registers and the interpreter
826 * in the driver parses the tables and executes then to program specific
827 * actions (set display modes, asic init, etc.). See radeon_atombios.c,
828 * atombios.h, and atom.c
832 * cail_pll_read - read PLL register
834 * @info: atom card_info pointer
835 * @reg: PLL register offset
837 * Provides a PLL register accessor for the atom interpreter (r4xx+).
838 * Returns the value of the PLL register.
840 static uint32_t cail_pll_read(struct card_info *info, uint32_t reg)
842 struct radeon_device *rdev = info->dev->dev_private;
845 r = rdev->pll_rreg(rdev, reg);
850 * cail_pll_write - write PLL register
852 * @info: atom card_info pointer
853 * @reg: PLL register offset
854 * @val: value to write to the pll register
856 * Provides a PLL register accessor for the atom interpreter (r4xx+).
858 static void cail_pll_write(struct card_info *info, uint32_t reg, uint32_t val)
860 struct radeon_device *rdev = info->dev->dev_private;
862 rdev->pll_wreg(rdev, reg, val);
866 * cail_mc_read - read MC (Memory Controller) register
868 * @info: atom card_info pointer
869 * @reg: MC register offset
871 * Provides an MC register accessor for the atom interpreter (r4xx+).
872 * Returns the value of the MC register.
874 static uint32_t cail_mc_read(struct card_info *info, uint32_t reg)
876 struct radeon_device *rdev = info->dev->dev_private;
879 r = rdev->mc_rreg(rdev, reg);
884 * cail_mc_write - write MC (Memory Controller) register
886 * @info: atom card_info pointer
887 * @reg: MC register offset
888 * @val: value to write to the pll register
890 * Provides a MC register accessor for the atom interpreter (r4xx+).
892 static void cail_mc_write(struct card_info *info, uint32_t reg, uint32_t val)
894 struct radeon_device *rdev = info->dev->dev_private;
896 rdev->mc_wreg(rdev, reg, val);
900 * cail_reg_write - write MMIO register
902 * @info: atom card_info pointer
903 * @reg: MMIO register offset
904 * @val: value to write to the pll register
906 * Provides a MMIO register accessor for the atom interpreter (r4xx+).
908 static void cail_reg_write(struct card_info *info, uint32_t reg, uint32_t val)
910 struct radeon_device *rdev = info->dev->dev_private;
916 * cail_reg_read - read MMIO register
918 * @info: atom card_info pointer
919 * @reg: MMIO register offset
921 * Provides an MMIO register accessor for the atom interpreter (r4xx+).
922 * Returns the value of the MMIO register.
924 static uint32_t cail_reg_read(struct card_info *info, uint32_t reg)
926 struct radeon_device *rdev = info->dev->dev_private;
934 * cail_ioreg_write - write IO register
936 * @info: atom card_info pointer
937 * @reg: IO register offset
938 * @val: value to write to the pll register
940 * Provides a IO register accessor for the atom interpreter (r4xx+).
942 static void cail_ioreg_write(struct card_info *info, uint32_t reg, uint32_t val)
944 struct radeon_device *rdev = info->dev->dev_private;
946 WREG32_IO(reg*4, val);
950 * cail_ioreg_read - read IO register
952 * @info: atom card_info pointer
953 * @reg: IO register offset
955 * Provides an IO register accessor for the atom interpreter (r4xx+).
956 * Returns the value of the IO register.
958 static uint32_t cail_ioreg_read(struct card_info *info, uint32_t reg)
960 struct radeon_device *rdev = info->dev->dev_private;
963 r = RREG32_IO(reg*4);
968 * radeon_atombios_init - init the driver info and callbacks for atombios
970 * @rdev: radeon_device pointer
972 * Initializes the driver info and register access callbacks for the
973 * ATOM interpreter (r4xx+).
974 * Returns 0 on sucess, -ENOMEM on failure.
975 * Called at driver startup.
977 int radeon_atombios_init(struct radeon_device *rdev)
979 struct card_info *atom_card_info =
980 kzalloc(sizeof(struct card_info), GFP_KERNEL);
985 rdev->mode_info.atom_card_info = atom_card_info;
986 atom_card_info->dev = rdev->ddev;
987 atom_card_info->reg_read = cail_reg_read;
988 atom_card_info->reg_write = cail_reg_write;
989 /* needed for iio ops */
991 atom_card_info->ioreg_read = cail_ioreg_read;
992 atom_card_info->ioreg_write = cail_ioreg_write;
994 DRM_ERROR("Unable to find PCI I/O BAR; using MMIO for ATOM IIO\n");
995 atom_card_info->ioreg_read = cail_reg_read;
996 atom_card_info->ioreg_write = cail_reg_write;
998 atom_card_info->mc_read = cail_mc_read;
999 atom_card_info->mc_write = cail_mc_write;
1000 atom_card_info->pll_read = cail_pll_read;
1001 atom_card_info->pll_write = cail_pll_write;
1003 rdev->mode_info.atom_context = atom_parse(atom_card_info, rdev->bios);
1004 if (!rdev->mode_info.atom_context) {
1005 radeon_atombios_fini(rdev);
1009 mutex_init(&rdev->mode_info.atom_context->mutex);
1010 mutex_init(&rdev->mode_info.atom_context->scratch_mutex);
1011 radeon_atom_initialize_bios_scratch_regs(rdev->ddev);
1012 atom_allocate_fb_scratch(rdev->mode_info.atom_context);
1017 * radeon_atombios_fini - free the driver info and callbacks for atombios
1019 * @rdev: radeon_device pointer
1021 * Frees the driver info and register access callbacks for the ATOM
1022 * interpreter (r4xx+).
1023 * Called at driver shutdown.
1025 void radeon_atombios_fini(struct radeon_device *rdev)
1027 if (rdev->mode_info.atom_context) {
1028 kfree(rdev->mode_info.atom_context->scratch);
1030 kfree(rdev->mode_info.atom_context);
1031 rdev->mode_info.atom_context = NULL;
1032 kfree(rdev->mode_info.atom_card_info);
1033 rdev->mode_info.atom_card_info = NULL;
1038 * COMBIOS is the bios format prior to ATOM. It provides
1039 * command tables similar to ATOM, but doesn't have a unified
1040 * parser. See radeon_combios.c
1044 * radeon_combios_init - init the driver info for combios
1046 * @rdev: radeon_device pointer
1048 * Initializes the driver info for combios (r1xx-r3xx).
1049 * Returns 0 on sucess.
1050 * Called at driver startup.
1052 int radeon_combios_init(struct radeon_device *rdev)
1054 radeon_combios_initialize_bios_scratch_regs(rdev->ddev);
1059 * radeon_combios_fini - free the driver info for combios
1061 * @rdev: radeon_device pointer
1063 * Frees the driver info for combios (r1xx-r3xx).
1064 * Called at driver shutdown.
1066 void radeon_combios_fini(struct radeon_device *rdev)
1070 /* if we get transitioned to only one device, take VGA back */
1072 * radeon_vga_set_decode - enable/disable vga decode
1074 * @cookie: radeon_device pointer
1075 * @state: enable/disable vga decode
1077 * Enable/disable vga decode (all asics).
1078 * Returns VGA resource flags.
1080 static unsigned int radeon_vga_set_decode(void *cookie, bool state)
1082 struct radeon_device *rdev = cookie;
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_check_pot_argument - check that argument is a power of two
1094 * @arg: value to check
1096 * Validates that a certain argument is a power of two (all asics).
1097 * Returns true if argument is valid.
1099 static bool radeon_check_pot_argument(int arg)
1101 return (arg & (arg - 1)) == 0;
1105 * Determine a sensible default GART size according to ASIC family.
1107 * @family ASIC family name
1109 static int radeon_gart_size_auto(enum radeon_family family)
1111 /* default to a larger gart size on newer asics */
1112 if (family >= CHIP_TAHITI)
1114 else if (family >= CHIP_RV770)
1121 * radeon_check_arguments - validate module params
1123 * @rdev: radeon_device pointer
1125 * Validates certain module parameters and updates
1126 * the associated values used by the driver (all asics).
1128 static void radeon_check_arguments(struct radeon_device *rdev)
1130 /* vramlimit must be a power of two */
1131 if (!radeon_check_pot_argument(radeon_vram_limit)) {
1132 dev_warn(rdev->dev, "vram limit (%d) must be a power of 2\n",
1134 radeon_vram_limit = 0;
1137 if (radeon_gart_size == -1) {
1138 radeon_gart_size = radeon_gart_size_auto(rdev->family);
1140 /* gtt size must be power of two and greater or equal to 32M */
1141 if (radeon_gart_size < 32) {
1142 dev_warn(rdev->dev, "gart size (%d) too small\n",
1144 radeon_gart_size = radeon_gart_size_auto(rdev->family);
1145 } else if (!radeon_check_pot_argument(radeon_gart_size)) {
1146 dev_warn(rdev->dev, "gart size (%d) must be a power of 2\n",
1148 radeon_gart_size = radeon_gart_size_auto(rdev->family);
1150 rdev->mc.gtt_size = (uint64_t)radeon_gart_size << 20;
1152 /* AGP mode can only be -1, 1, 2, 4, 8 */
1153 switch (radeon_agpmode) {
1162 dev_warn(rdev->dev, "invalid AGP mode %d (valid mode: "
1163 "-1, 0, 1, 2, 4, 8)\n", radeon_agpmode);
1168 if (!radeon_check_pot_argument(radeon_vm_size)) {
1169 dev_warn(rdev->dev, "VM size (%d) must be a power of 2\n",
1174 if (radeon_vm_size < 1) {
1175 dev_warn(rdev->dev, "VM size (%d) too small, min is 1GB\n",
1181 * Max GPUVM size for Cayman, SI and CI are 40 bits.
1183 if (radeon_vm_size > 1024) {
1184 dev_warn(rdev->dev, "VM size (%d) too large, max is 1TB\n",
1189 /* defines number of bits in page table versus page directory,
1190 * a page is 4KB so we have 12 bits offset, minimum 9 bits in the
1191 * page table and the remaining bits are in the page directory */
1192 if (radeon_vm_block_size == -1) {
1194 /* Total bits covered by PD + PTs */
1195 unsigned bits = ilog2(radeon_vm_size) + 18;
1197 /* Make sure the PD is 4K in size up to 8GB address space.
1198 Above that split equal between PD and PTs */
1199 if (radeon_vm_size <= 8)
1200 radeon_vm_block_size = bits - 9;
1202 radeon_vm_block_size = (bits + 3) / 2;
1204 } else if (radeon_vm_block_size < 9) {
1205 dev_warn(rdev->dev, "VM page table size (%d) too small\n",
1206 radeon_vm_block_size);
1207 radeon_vm_block_size = 9;
1210 if (radeon_vm_block_size > 24 ||
1211 (radeon_vm_size * 1024) < (1ull << radeon_vm_block_size)) {
1212 dev_warn(rdev->dev, "VM page table size (%d) too large\n",
1213 radeon_vm_block_size);
1214 radeon_vm_block_size = 9;
1219 * radeon_switcheroo_set_state - set switcheroo state
1221 * @pdev: pci dev pointer
1222 * @state: vga_switcheroo state
1224 * Callback for the switcheroo driver. Suspends or resumes the
1225 * the asics before or after it is powered up using ACPI methods.
1227 static void radeon_switcheroo_set_state(struct pci_dev *pdev, enum vga_switcheroo_state state)
1229 struct drm_device *dev = pci_get_drvdata(pdev);
1230 struct radeon_device *rdev = dev->dev_private;
1232 if (radeon_is_px(dev) && state == VGA_SWITCHEROO_OFF)
1235 if (state == VGA_SWITCHEROO_ON) {
1236 unsigned d3_delay = dev->pdev->d3_delay;
1238 printk(KERN_INFO "radeon: switched on\n");
1239 /* don't suspend or resume card normally */
1240 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
1242 if (d3_delay < 20 && (rdev->px_quirk_flags & RADEON_PX_QUIRK_LONG_WAKEUP))
1243 dev->pdev->d3_delay = 20;
1245 radeon_resume_kms(dev, true, true);
1247 dev->pdev->d3_delay = d3_delay;
1249 dev->switch_power_state = DRM_SWITCH_POWER_ON;
1250 drm_kms_helper_poll_enable(dev);
1252 printk(KERN_INFO "radeon: switched off\n");
1253 drm_kms_helper_poll_disable(dev);
1254 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
1255 radeon_suspend_kms(dev, true, true, false);
1256 dev->switch_power_state = DRM_SWITCH_POWER_OFF;
1261 * radeon_switcheroo_can_switch - see if switcheroo state can change
1263 * @pdev: pci dev pointer
1265 * Callback for the switcheroo driver. Check of the switcheroo
1266 * state can be changed.
1267 * Returns true if the state can be changed, false if not.
1269 static bool radeon_switcheroo_can_switch(struct pci_dev *pdev)
1271 struct drm_device *dev = pci_get_drvdata(pdev);
1274 * FIXME: open_count is protected by drm_global_mutex but that would lead to
1275 * locking inversion with the driver load path. And the access here is
1276 * completely racy anyway. So don't bother with locking for now.
1278 return dev->open_count == 0;
1281 static const struct vga_switcheroo_client_ops radeon_switcheroo_ops = {
1282 .set_gpu_state = radeon_switcheroo_set_state,
1284 .can_switch = radeon_switcheroo_can_switch,
1288 * radeon_device_init - initialize the driver
1290 * @rdev: radeon_device pointer
1291 * @pdev: drm dev pointer
1292 * @pdev: pci dev pointer
1293 * @flags: driver flags
1295 * Initializes the driver info and hw (all asics).
1296 * Returns 0 for success or an error on failure.
1297 * Called at driver startup.
1299 int radeon_device_init(struct radeon_device *rdev,
1300 struct drm_device *ddev,
1301 struct pci_dev *pdev,
1306 bool runtime = false;
1308 rdev->shutdown = false;
1309 rdev->dev = &pdev->dev;
1312 rdev->flags = flags;
1313 rdev->family = flags & RADEON_FAMILY_MASK;
1314 rdev->is_atom_bios = false;
1315 rdev->usec_timeout = RADEON_MAX_USEC_TIMEOUT;
1316 rdev->mc.gtt_size = 512 * 1024 * 1024;
1317 rdev->accel_working = false;
1318 /* set up ring ids */
1319 for (i = 0; i < RADEON_NUM_RINGS; i++) {
1320 rdev->ring[i].idx = i;
1322 rdev->fence_context = fence_context_alloc(RADEON_NUM_RINGS);
1324 DRM_INFO("initializing kernel modesetting (%s 0x%04X:0x%04X 0x%04X:0x%04X 0x%02X).\n",
1325 radeon_family_name[rdev->family], pdev->vendor, pdev->device,
1326 pdev->subsystem_vendor, pdev->subsystem_device, pdev->revision);
1328 /* mutex initialization are all done here so we
1329 * can recall function without having locking issues */
1330 mutex_init(&rdev->ring_lock);
1331 mutex_init(&rdev->dc_hw_i2c_mutex);
1332 atomic_set(&rdev->ih.lock, 0);
1333 mutex_init(&rdev->gem.mutex);
1334 mutex_init(&rdev->pm.mutex);
1335 mutex_init(&rdev->gpu_clock_mutex);
1336 mutex_init(&rdev->srbm_mutex);
1337 mutex_init(&rdev->grbm_idx_mutex);
1338 init_rwsem(&rdev->pm.mclk_lock);
1339 init_rwsem(&rdev->exclusive_lock);
1340 init_waitqueue_head(&rdev->irq.vblank_queue);
1341 mutex_init(&rdev->mn_lock);
1342 hash_init(rdev->mn_hash);
1343 r = radeon_gem_init(rdev);
1347 radeon_check_arguments(rdev);
1348 /* Adjust VM size here.
1349 * Max GPUVM size for cayman+ is 40 bits.
1351 rdev->vm_manager.max_pfn = radeon_vm_size << 18;
1353 /* Set asic functions */
1354 r = radeon_asic_init(rdev);
1358 /* all of the newer IGP chips have an internal gart
1359 * However some rs4xx report as AGP, so remove that here.
1361 if ((rdev->family >= CHIP_RS400) &&
1362 (rdev->flags & RADEON_IS_IGP)) {
1363 rdev->flags &= ~RADEON_IS_AGP;
1366 if (rdev->flags & RADEON_IS_AGP && radeon_agpmode == -1) {
1367 radeon_agp_disable(rdev);
1370 /* Set the internal MC address mask
1371 * This is the max address of the GPU's
1372 * internal address space.
1374 if (rdev->family >= CHIP_CAYMAN)
1375 rdev->mc.mc_mask = 0xffffffffffULL; /* 40 bit MC */
1376 else if (rdev->family >= CHIP_CEDAR)
1377 rdev->mc.mc_mask = 0xfffffffffULL; /* 36 bit MC */
1379 rdev->mc.mc_mask = 0xffffffffULL; /* 32 bit MC */
1381 /* set DMA mask + need_dma32 flags.
1382 * PCIE - can handle 40-bits.
1383 * IGP - can handle 40-bits
1384 * AGP - generally dma32 is safest
1385 * PCI - dma32 for legacy pci gart, 40 bits on newer asics
1387 rdev->need_dma32 = false;
1388 if (rdev->flags & RADEON_IS_AGP)
1389 rdev->need_dma32 = true;
1390 if ((rdev->flags & RADEON_IS_PCI) &&
1391 (rdev->family <= CHIP_RS740))
1392 rdev->need_dma32 = true;
1394 dma_bits = rdev->need_dma32 ? 32 : 40;
1395 r = pci_set_dma_mask(rdev->pdev, DMA_BIT_MASK(dma_bits));
1397 rdev->need_dma32 = true;
1399 printk(KERN_WARNING "radeon: No suitable DMA available.\n");
1401 r = pci_set_consistent_dma_mask(rdev->pdev, DMA_BIT_MASK(dma_bits));
1403 pci_set_consistent_dma_mask(rdev->pdev, DMA_BIT_MASK(32));
1404 printk(KERN_WARNING "radeon: No coherent DMA available.\n");
1407 /* Registers mapping */
1408 /* TODO: block userspace mapping of io register */
1409 spin_lock_init(&rdev->mmio_idx_lock);
1410 spin_lock_init(&rdev->smc_idx_lock);
1411 spin_lock_init(&rdev->pll_idx_lock);
1412 spin_lock_init(&rdev->mc_idx_lock);
1413 spin_lock_init(&rdev->pcie_idx_lock);
1414 spin_lock_init(&rdev->pciep_idx_lock);
1415 spin_lock_init(&rdev->pif_idx_lock);
1416 spin_lock_init(&rdev->cg_idx_lock);
1417 spin_lock_init(&rdev->uvd_idx_lock);
1418 spin_lock_init(&rdev->rcu_idx_lock);
1419 spin_lock_init(&rdev->didt_idx_lock);
1420 spin_lock_init(&rdev->end_idx_lock);
1421 if (rdev->family >= CHIP_BONAIRE) {
1422 rdev->rmmio_base = pci_resource_start(rdev->pdev, 5);
1423 rdev->rmmio_size = pci_resource_len(rdev->pdev, 5);
1425 rdev->rmmio_base = pci_resource_start(rdev->pdev, 2);
1426 rdev->rmmio_size = pci_resource_len(rdev->pdev, 2);
1428 rdev->rmmio = ioremap(rdev->rmmio_base, rdev->rmmio_size);
1429 if (rdev->rmmio == NULL) {
1432 DRM_INFO("register mmio base: 0x%08X\n", (uint32_t)rdev->rmmio_base);
1433 DRM_INFO("register mmio size: %u\n", (unsigned)rdev->rmmio_size);
1435 /* doorbell bar mapping */
1436 if (rdev->family >= CHIP_BONAIRE)
1437 radeon_doorbell_init(rdev);
1439 /* io port mapping */
1440 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
1441 if (pci_resource_flags(rdev->pdev, i) & IORESOURCE_IO) {
1442 rdev->rio_mem_size = pci_resource_len(rdev->pdev, i);
1443 rdev->rio_mem = pci_iomap(rdev->pdev, i, rdev->rio_mem_size);
1447 if (rdev->rio_mem == NULL)
1448 DRM_ERROR("Unable to find PCI I/O BAR\n");
1450 if (rdev->flags & RADEON_IS_PX)
1451 radeon_device_handle_px_quirks(rdev);
1453 /* if we have > 1 VGA cards, then disable the radeon VGA resources */
1454 /* this will fail for cards that aren't VGA class devices, just
1456 vga_client_register(rdev->pdev, rdev, NULL, radeon_vga_set_decode);
1458 if (rdev->flags & RADEON_IS_PX)
1460 vga_switcheroo_register_client(rdev->pdev, &radeon_switcheroo_ops, runtime);
1462 vga_switcheroo_init_domain_pm_ops(rdev->dev, &rdev->vga_pm_domain);
1464 r = radeon_init(rdev);
1468 r = radeon_gem_debugfs_init(rdev);
1470 DRM_ERROR("registering gem debugfs failed (%d).\n", r);
1473 r = radeon_mst_debugfs_init(rdev);
1475 DRM_ERROR("registering mst debugfs failed (%d).\n", r);
1478 if (rdev->flags & RADEON_IS_AGP && !rdev->accel_working) {
1479 /* Acceleration not working on AGP card try again
1480 * with fallback to PCI or PCIE GART
1482 radeon_asic_reset(rdev);
1484 radeon_agp_disable(rdev);
1485 r = radeon_init(rdev);
1490 r = radeon_ib_ring_tests(rdev);
1492 DRM_ERROR("ib ring test failed (%d).\n", r);
1495 * Turks/Thames GPU will freeze whole laptop if DPM is not restarted
1496 * after the CP ring have chew one packet at least. Hence here we stop
1497 * and restart DPM after the radeon_ib_ring_tests().
1499 if (rdev->pm.dpm_enabled &&
1500 (rdev->pm.pm_method == PM_METHOD_DPM) &&
1501 (rdev->family == CHIP_TURKS) &&
1502 (rdev->flags & RADEON_IS_MOBILITY)) {
1503 mutex_lock(&rdev->pm.mutex);
1504 radeon_dpm_disable(rdev);
1505 radeon_dpm_enable(rdev);
1506 mutex_unlock(&rdev->pm.mutex);
1509 if ((radeon_testing & 1)) {
1510 if (rdev->accel_working)
1511 radeon_test_moves(rdev);
1513 DRM_INFO("radeon: acceleration disabled, skipping move tests\n");
1515 if ((radeon_testing & 2)) {
1516 if (rdev->accel_working)
1517 radeon_test_syncing(rdev);
1519 DRM_INFO("radeon: acceleration disabled, skipping sync tests\n");
1521 if (radeon_benchmarking) {
1522 if (rdev->accel_working)
1523 radeon_benchmark(rdev, radeon_benchmarking);
1525 DRM_INFO("radeon: acceleration disabled, skipping benchmarks\n");
1530 /* balance pm_runtime_get_sync() in radeon_driver_unload_kms() */
1531 if (radeon_is_px(ddev))
1532 pm_runtime_put_noidle(ddev->dev);
1534 vga_switcheroo_fini_domain_pm_ops(rdev->dev);
1538 static void radeon_debugfs_remove_files(struct radeon_device *rdev);
1541 * radeon_device_fini - tear down the driver
1543 * @rdev: radeon_device pointer
1545 * Tear down the driver info (all asics).
1546 * Called at driver shutdown.
1548 void radeon_device_fini(struct radeon_device *rdev)
1550 DRM_INFO("radeon: finishing device.\n");
1551 rdev->shutdown = true;
1552 /* evict vram memory */
1553 radeon_bo_evict_vram(rdev);
1555 vga_switcheroo_unregister_client(rdev->pdev);
1556 if (rdev->flags & RADEON_IS_PX)
1557 vga_switcheroo_fini_domain_pm_ops(rdev->dev);
1558 vga_client_register(rdev->pdev, NULL, NULL, NULL);
1560 pci_iounmap(rdev->pdev, rdev->rio_mem);
1561 rdev->rio_mem = NULL;
1562 iounmap(rdev->rmmio);
1564 if (rdev->family >= CHIP_BONAIRE)
1565 radeon_doorbell_fini(rdev);
1566 radeon_debugfs_remove_files(rdev);
1574 * radeon_suspend_kms - initiate device suspend
1576 * @pdev: drm dev pointer
1577 * @state: suspend state
1579 * Puts the hw in the suspend state (all asics).
1580 * Returns 0 for success or an error on failure.
1581 * Called at driver suspend.
1583 int radeon_suspend_kms(struct drm_device *dev, bool suspend,
1584 bool fbcon, bool freeze)
1586 struct radeon_device *rdev;
1587 struct drm_crtc *crtc;
1588 struct drm_connector *connector;
1591 if (dev == NULL || dev->dev_private == NULL) {
1595 rdev = dev->dev_private;
1597 if (dev->switch_power_state == DRM_SWITCH_POWER_OFF ||
1598 dev->switch_power_state == DRM_SWITCH_POWER_DYNAMIC_OFF)
1601 drm_kms_helper_poll_disable(dev);
1603 drm_modeset_lock_all(dev);
1604 /* turn off display hw */
1605 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1606 drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
1608 drm_modeset_unlock_all(dev);
1610 /* unpin the front buffers and cursors */
1611 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
1612 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
1613 struct radeon_framebuffer *rfb = to_radeon_framebuffer(crtc->primary->fb);
1614 struct radeon_bo *robj;
1616 if (radeon_crtc->cursor_bo) {
1617 struct radeon_bo *robj = gem_to_radeon_bo(radeon_crtc->cursor_bo);
1618 r = radeon_bo_reserve(robj, false);
1620 radeon_bo_unpin(robj);
1621 radeon_bo_unreserve(robj);
1625 if (rfb == NULL || rfb->obj == NULL) {
1628 robj = gem_to_radeon_bo(rfb->obj);
1629 /* don't unpin kernel fb objects */
1630 if (!radeon_fbdev_robj_is_fb(rdev, robj)) {
1631 r = radeon_bo_reserve(robj, false);
1633 radeon_bo_unpin(robj);
1634 radeon_bo_unreserve(robj);
1638 /* evict vram memory */
1639 radeon_bo_evict_vram(rdev);
1641 /* wait for gpu to finish processing current batch */
1642 for (i = 0; i < RADEON_NUM_RINGS; i++) {
1643 r = radeon_fence_wait_empty(rdev, i);
1645 /* delay GPU reset to resume */
1646 radeon_fence_driver_force_completion(rdev, i);
1650 radeon_save_bios_scratch_regs(rdev);
1652 radeon_suspend(rdev);
1653 radeon_hpd_fini(rdev);
1654 /* evict remaining vram memory */
1655 radeon_bo_evict_vram(rdev);
1657 radeon_agp_suspend(rdev);
1659 pci_save_state(dev->pdev);
1660 if (freeze && rdev->family >= CHIP_CEDAR) {
1661 rdev->asic->asic_reset(rdev, true);
1662 pci_restore_state(dev->pdev);
1663 } else if (suspend) {
1664 /* Shut down the device */
1665 pci_disable_device(dev->pdev);
1666 pci_set_power_state(dev->pdev, PCI_D3hot);
1671 radeon_fbdev_set_suspend(rdev, 1);
1678 * radeon_resume_kms - initiate device resume
1680 * @pdev: drm dev pointer
1682 * Bring the hw back to operating state (all asics).
1683 * Returns 0 for success or an error on failure.
1684 * Called at driver resume.
1686 int radeon_resume_kms(struct drm_device *dev, bool resume, bool fbcon)
1688 struct drm_connector *connector;
1689 struct radeon_device *rdev = dev->dev_private;
1690 struct drm_crtc *crtc;
1693 if (dev->switch_power_state == DRM_SWITCH_POWER_OFF ||
1694 dev->switch_power_state == DRM_SWITCH_POWER_DYNAMIC_OFF)
1701 pci_set_power_state(dev->pdev, PCI_D0);
1702 pci_restore_state(dev->pdev);
1703 if (pci_enable_device(dev->pdev)) {
1709 /* resume AGP if in use */
1710 radeon_agp_resume(rdev);
1711 radeon_resume(rdev);
1713 r = radeon_ib_ring_tests(rdev);
1715 DRM_ERROR("ib ring test failed (%d).\n", r);
1717 if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled) {
1718 /* do dpm late init */
1719 r = radeon_pm_late_init(rdev);
1721 rdev->pm.dpm_enabled = false;
1722 DRM_ERROR("radeon_pm_late_init failed, disabling dpm\n");
1725 /* resume old pm late */
1726 radeon_pm_resume(rdev);
1729 radeon_restore_bios_scratch_regs(rdev);
1732 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
1733 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
1735 if (radeon_crtc->cursor_bo) {
1736 struct radeon_bo *robj = gem_to_radeon_bo(radeon_crtc->cursor_bo);
1737 r = radeon_bo_reserve(robj, false);
1739 /* Only 27 bit offset for legacy cursor */
1740 r = radeon_bo_pin_restricted(robj,
1741 RADEON_GEM_DOMAIN_VRAM,
1742 ASIC_IS_AVIVO(rdev) ?
1744 &radeon_crtc->cursor_addr);
1746 DRM_ERROR("Failed to pin cursor BO (%d)\n", r);
1747 radeon_bo_unreserve(robj);
1752 /* init dig PHYs, disp eng pll */
1753 if (rdev->is_atom_bios) {
1754 radeon_atom_encoder_init(rdev);
1755 radeon_atom_disp_eng_pll_init(rdev);
1756 /* turn on the BL */
1757 if (rdev->mode_info.bl_encoder) {
1758 u8 bl_level = radeon_get_backlight_level(rdev,
1759 rdev->mode_info.bl_encoder);
1760 radeon_set_backlight_level(rdev, rdev->mode_info.bl_encoder,
1764 /* reset hpd state */
1765 radeon_hpd_init(rdev);
1766 /* blat the mode back in */
1768 drm_helper_resume_force_mode(dev);
1769 /* turn on display hw */
1770 drm_modeset_lock_all(dev);
1771 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1772 drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
1774 drm_modeset_unlock_all(dev);
1777 drm_kms_helper_poll_enable(dev);
1779 /* set the power state here in case we are a PX system or headless */
1780 if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled)
1781 radeon_pm_compute_clocks(rdev);
1784 radeon_fbdev_set_suspend(rdev, 0);
1792 * radeon_gpu_reset - reset the asic
1794 * @rdev: radeon device pointer
1796 * Attempt the reset the GPU if it has hung (all asics).
1797 * Returns 0 for success or an error on failure.
1799 int radeon_gpu_reset(struct radeon_device *rdev)
1801 unsigned ring_sizes[RADEON_NUM_RINGS];
1802 uint32_t *ring_data[RADEON_NUM_RINGS];
1809 down_write(&rdev->exclusive_lock);
1811 if (!rdev->needs_reset) {
1812 up_write(&rdev->exclusive_lock);
1816 atomic_inc(&rdev->gpu_reset_counter);
1818 radeon_save_bios_scratch_regs(rdev);
1820 resched = ttm_bo_lock_delayed_workqueue(&rdev->mman.bdev);
1821 radeon_suspend(rdev);
1822 radeon_hpd_fini(rdev);
1824 for (i = 0; i < RADEON_NUM_RINGS; ++i) {
1825 ring_sizes[i] = radeon_ring_backup(rdev, &rdev->ring[i],
1827 if (ring_sizes[i]) {
1829 dev_info(rdev->dev, "Saved %d dwords of commands "
1830 "on ring %d.\n", ring_sizes[i], i);
1834 r = radeon_asic_reset(rdev);
1836 dev_info(rdev->dev, "GPU reset succeeded, trying to resume\n");
1837 radeon_resume(rdev);
1840 radeon_restore_bios_scratch_regs(rdev);
1842 for (i = 0; i < RADEON_NUM_RINGS; ++i) {
1843 if (!r && ring_data[i]) {
1844 radeon_ring_restore(rdev, &rdev->ring[i],
1845 ring_sizes[i], ring_data[i]);
1847 radeon_fence_driver_force_completion(rdev, i);
1848 kfree(ring_data[i]);
1852 if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled) {
1853 /* do dpm late init */
1854 r = radeon_pm_late_init(rdev);
1856 rdev->pm.dpm_enabled = false;
1857 DRM_ERROR("radeon_pm_late_init failed, disabling dpm\n");
1860 /* resume old pm late */
1861 radeon_pm_resume(rdev);
1864 /* init dig PHYs, disp eng pll */
1865 if (rdev->is_atom_bios) {
1866 radeon_atom_encoder_init(rdev);
1867 radeon_atom_disp_eng_pll_init(rdev);
1868 /* turn on the BL */
1869 if (rdev->mode_info.bl_encoder) {
1870 u8 bl_level = radeon_get_backlight_level(rdev,
1871 rdev->mode_info.bl_encoder);
1872 radeon_set_backlight_level(rdev, rdev->mode_info.bl_encoder,
1876 /* reset hpd state */
1877 radeon_hpd_init(rdev);
1879 ttm_bo_unlock_delayed_workqueue(&rdev->mman.bdev, resched);
1881 rdev->in_reset = true;
1882 rdev->needs_reset = false;
1884 downgrade_write(&rdev->exclusive_lock);
1886 drm_helper_resume_force_mode(rdev->ddev);
1888 /* set the power state here in case we are a PX system or headless */
1889 if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled)
1890 radeon_pm_compute_clocks(rdev);
1893 r = radeon_ib_ring_tests(rdev);
1897 /* bad news, how to tell it to userspace ? */
1898 dev_info(rdev->dev, "GPU reset failed\n");
1901 rdev->needs_reset = r == -EAGAIN;
1902 rdev->in_reset = false;
1904 up_read(&rdev->exclusive_lock);
1912 int radeon_debugfs_add_files(struct radeon_device *rdev,
1913 struct drm_info_list *files,
1918 for (i = 0; i < rdev->debugfs_count; i++) {
1919 if (rdev->debugfs[i].files == files) {
1920 /* Already registered */
1925 i = rdev->debugfs_count + 1;
1926 if (i > RADEON_DEBUGFS_MAX_COMPONENTS) {
1927 DRM_ERROR("Reached maximum number of debugfs components.\n");
1928 DRM_ERROR("Report so we increase "
1929 "RADEON_DEBUGFS_MAX_COMPONENTS.\n");
1932 rdev->debugfs[rdev->debugfs_count].files = files;
1933 rdev->debugfs[rdev->debugfs_count].num_files = nfiles;
1934 rdev->debugfs_count = i;
1935 #if defined(CONFIG_DEBUG_FS)
1936 drm_debugfs_create_files(files, nfiles,
1937 rdev->ddev->control->debugfs_root,
1938 rdev->ddev->control);
1939 drm_debugfs_create_files(files, nfiles,
1940 rdev->ddev->primary->debugfs_root,
1941 rdev->ddev->primary);
1946 static void radeon_debugfs_remove_files(struct radeon_device *rdev)
1948 #if defined(CONFIG_DEBUG_FS)
1951 for (i = 0; i < rdev->debugfs_count; i++) {
1952 drm_debugfs_remove_files(rdev->debugfs[i].files,
1953 rdev->debugfs[i].num_files,
1954 rdev->ddev->control);
1955 drm_debugfs_remove_files(rdev->debugfs[i].files,
1956 rdev->debugfs[i].num_files,
1957 rdev->ddev->primary);