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 #if defined(CONFIG_VGA_SWITCHEROO)
108 bool radeon_has_atpx_dgpu_power_cntl(void);
109 bool radeon_is_atpx_hybrid(void);
111 static inline bool radeon_has_atpx_dgpu_power_cntl(void) { return false; }
112 static inline bool radeon_is_atpx_hybrid(void) { return false; }
115 #define RADEON_PX_QUIRK_DISABLE_PX (1 << 0)
116 #define RADEON_PX_QUIRK_LONG_WAKEUP (1 << 1)
118 struct radeon_px_quirk {
126 static struct radeon_px_quirk radeon_px_quirk_list[] = {
127 /* Acer aspire 5560g (CPU: AMD A4-3305M; GPU: AMD Radeon HD 6480g + 7470m)
128 * https://bugzilla.kernel.org/show_bug.cgi?id=74551
130 { PCI_VENDOR_ID_ATI, 0x6760, 0x1025, 0x0672, RADEON_PX_QUIRK_DISABLE_PX },
131 /* Asus K73TA laptop with AMD A6-3400M APU and Radeon 6550 GPU
132 * https://bugzilla.kernel.org/show_bug.cgi?id=51381
134 { PCI_VENDOR_ID_ATI, 0x6741, 0x1043, 0x108c, RADEON_PX_QUIRK_DISABLE_PX },
135 /* Asus K53TK laptop with AMD A6-3420M APU and Radeon 7670m GPU
136 * https://bugzilla.kernel.org/show_bug.cgi?id=51381
138 { PCI_VENDOR_ID_ATI, 0x6840, 0x1043, 0x2122, RADEON_PX_QUIRK_DISABLE_PX },
139 /* Asus K53TK laptop with AMD A6-3420M APU and Radeon 7670m GPU
140 * https://bugs.freedesktop.org/show_bug.cgi?id=101491
142 { PCI_VENDOR_ID_ATI, 0x6741, 0x1043, 0x2122, RADEON_PX_QUIRK_DISABLE_PX },
143 /* macbook pro 8.2 */
144 { PCI_VENDOR_ID_ATI, 0x6741, PCI_VENDOR_ID_APPLE, 0x00e2, RADEON_PX_QUIRK_LONG_WAKEUP },
148 bool radeon_is_px(struct drm_device *dev)
150 struct radeon_device *rdev = dev->dev_private;
152 if (rdev->flags & RADEON_IS_PX)
157 static void radeon_device_handle_px_quirks(struct radeon_device *rdev)
159 struct radeon_px_quirk *p = radeon_px_quirk_list;
161 /* Apply PX quirks */
162 while (p && p->chip_device != 0) {
163 if (rdev->pdev->vendor == p->chip_vendor &&
164 rdev->pdev->device == p->chip_device &&
165 rdev->pdev->subsystem_vendor == p->subsys_vendor &&
166 rdev->pdev->subsystem_device == p->subsys_device) {
167 rdev->px_quirk_flags = p->px_quirk_flags;
173 if (rdev->px_quirk_flags & RADEON_PX_QUIRK_DISABLE_PX)
174 rdev->flags &= ~RADEON_IS_PX;
176 /* disable PX is the system doesn't support dGPU power control or hybrid gfx */
177 if (!radeon_is_atpx_hybrid() &&
178 !radeon_has_atpx_dgpu_power_cntl())
179 rdev->flags &= ~RADEON_IS_PX;
183 * radeon_program_register_sequence - program an array of registers.
185 * @rdev: radeon_device pointer
186 * @registers: pointer to the register array
187 * @array_size: size of the register array
189 * Programs an array or registers with and and or masks.
190 * This is a helper for setting golden registers.
192 void radeon_program_register_sequence(struct radeon_device *rdev,
193 const u32 *registers,
194 const u32 array_size)
196 u32 tmp, reg, and_mask, or_mask;
202 for (i = 0; i < array_size; i +=3) {
203 reg = registers[i + 0];
204 and_mask = registers[i + 1];
205 or_mask = registers[i + 2];
207 if (and_mask == 0xffffffff) {
218 void radeon_pci_config_reset(struct radeon_device *rdev)
220 pci_write_config_dword(rdev->pdev, 0x7c, RADEON_ASIC_RESET_DATA);
224 * radeon_surface_init - Clear GPU surface registers.
226 * @rdev: radeon_device pointer
228 * Clear GPU surface registers (r1xx-r5xx).
230 void radeon_surface_init(struct radeon_device *rdev)
232 /* FIXME: check this out */
233 if (rdev->family < CHIP_R600) {
236 for (i = 0; i < RADEON_GEM_MAX_SURFACES; i++) {
237 if (rdev->surface_regs[i].bo)
238 radeon_bo_get_surface_reg(rdev->surface_regs[i].bo);
240 radeon_clear_surface_reg(rdev, i);
242 /* enable surfaces */
243 WREG32(RADEON_SURFACE_CNTL, 0);
248 * GPU scratch registers helpers function.
251 * radeon_scratch_init - Init scratch register driver information.
253 * @rdev: radeon_device pointer
255 * Init CP scratch register driver information (r1xx-r5xx)
257 void radeon_scratch_init(struct radeon_device *rdev)
261 /* FIXME: check this out */
262 if (rdev->family < CHIP_R300) {
263 rdev->scratch.num_reg = 5;
265 rdev->scratch.num_reg = 7;
267 rdev->scratch.reg_base = RADEON_SCRATCH_REG0;
268 for (i = 0; i < rdev->scratch.num_reg; i++) {
269 rdev->scratch.free[i] = true;
270 rdev->scratch.reg[i] = rdev->scratch.reg_base + (i * 4);
275 * radeon_scratch_get - Allocate a scratch register
277 * @rdev: radeon_device pointer
278 * @reg: scratch register mmio offset
280 * Allocate a CP scratch register for use by the driver (all asics).
281 * Returns 0 on success or -EINVAL on failure.
283 int radeon_scratch_get(struct radeon_device *rdev, uint32_t *reg)
287 for (i = 0; i < rdev->scratch.num_reg; i++) {
288 if (rdev->scratch.free[i]) {
289 rdev->scratch.free[i] = false;
290 *reg = rdev->scratch.reg[i];
298 * radeon_scratch_free - Free a scratch register
300 * @rdev: radeon_device pointer
301 * @reg: scratch register mmio offset
303 * Free a CP scratch register allocated for use by the driver (all asics)
305 void radeon_scratch_free(struct radeon_device *rdev, uint32_t reg)
309 for (i = 0; i < rdev->scratch.num_reg; i++) {
310 if (rdev->scratch.reg[i] == reg) {
311 rdev->scratch.free[i] = true;
318 * GPU doorbell aperture helpers function.
321 * radeon_doorbell_init - Init doorbell driver information.
323 * @rdev: radeon_device pointer
325 * Init doorbell driver information (CIK)
326 * Returns 0 on success, error on failure.
328 static int radeon_doorbell_init(struct radeon_device *rdev)
330 /* doorbell bar mapping */
331 rdev->doorbell.base = pci_resource_start(rdev->pdev, 2);
332 rdev->doorbell.size = pci_resource_len(rdev->pdev, 2);
334 rdev->doorbell.num_doorbells = min_t(u32, rdev->doorbell.size / sizeof(u32), RADEON_MAX_DOORBELLS);
335 if (rdev->doorbell.num_doorbells == 0)
338 rdev->doorbell.ptr = ioremap(rdev->doorbell.base, rdev->doorbell.num_doorbells * sizeof(u32));
339 if (rdev->doorbell.ptr == NULL) {
342 DRM_INFO("doorbell mmio base: 0x%08X\n", (uint32_t)rdev->doorbell.base);
343 DRM_INFO("doorbell mmio size: %u\n", (unsigned)rdev->doorbell.size);
345 memset(&rdev->doorbell.used, 0, sizeof(rdev->doorbell.used));
351 * radeon_doorbell_fini - Tear down doorbell driver information.
353 * @rdev: radeon_device pointer
355 * Tear down doorbell driver information (CIK)
357 static void radeon_doorbell_fini(struct radeon_device *rdev)
359 iounmap(rdev->doorbell.ptr);
360 rdev->doorbell.ptr = NULL;
364 * radeon_doorbell_get - Allocate a doorbell entry
366 * @rdev: radeon_device pointer
367 * @doorbell: doorbell index
369 * Allocate a doorbell for use by the driver (all asics).
370 * Returns 0 on success or -EINVAL on failure.
372 int radeon_doorbell_get(struct radeon_device *rdev, u32 *doorbell)
374 unsigned long offset = find_first_zero_bit(rdev->doorbell.used, rdev->doorbell.num_doorbells);
375 if (offset < rdev->doorbell.num_doorbells) {
376 __set_bit(offset, rdev->doorbell.used);
385 * radeon_doorbell_free - Free a doorbell entry
387 * @rdev: radeon_device pointer
388 * @doorbell: doorbell index
390 * Free a doorbell allocated for use by the driver (all asics)
392 void radeon_doorbell_free(struct radeon_device *rdev, u32 doorbell)
394 if (doorbell < rdev->doorbell.num_doorbells)
395 __clear_bit(doorbell, rdev->doorbell.used);
399 * radeon_doorbell_get_kfd_info - Report doorbell configuration required to
402 * @rdev: radeon_device pointer
403 * @aperture_base: output returning doorbell aperture base physical address
404 * @aperture_size: output returning doorbell aperture size in bytes
405 * @start_offset: output returning # of doorbell bytes reserved for radeon.
407 * Radeon and the KFD share the doorbell aperture. Radeon sets it up,
408 * takes doorbells required for its own rings and reports the setup to KFD.
409 * Radeon reserved doorbells are at the start of the doorbell aperture.
411 void radeon_doorbell_get_kfd_info(struct radeon_device *rdev,
412 phys_addr_t *aperture_base,
413 size_t *aperture_size,
414 size_t *start_offset)
416 /* The first num_doorbells are used by radeon.
417 * KFD takes whatever's left in the aperture. */
418 if (rdev->doorbell.size > rdev->doorbell.num_doorbells * sizeof(u32)) {
419 *aperture_base = rdev->doorbell.base;
420 *aperture_size = rdev->doorbell.size;
421 *start_offset = rdev->doorbell.num_doorbells * sizeof(u32);
431 * Writeback is the the method by which the the GPU updates special pages
432 * in memory with the status of certain GPU events (fences, ring pointers,
437 * radeon_wb_disable - Disable Writeback
439 * @rdev: radeon_device pointer
441 * Disables Writeback (all asics). Used for suspend.
443 void radeon_wb_disable(struct radeon_device *rdev)
445 rdev->wb.enabled = false;
449 * radeon_wb_fini - Disable Writeback and free memory
451 * @rdev: radeon_device pointer
453 * Disables Writeback and frees the Writeback memory (all asics).
454 * Used at driver shutdown.
456 void radeon_wb_fini(struct radeon_device *rdev)
458 radeon_wb_disable(rdev);
459 if (rdev->wb.wb_obj) {
460 if (!radeon_bo_reserve(rdev->wb.wb_obj, false)) {
461 radeon_bo_kunmap(rdev->wb.wb_obj);
462 radeon_bo_unpin(rdev->wb.wb_obj);
463 radeon_bo_unreserve(rdev->wb.wb_obj);
465 radeon_bo_unref(&rdev->wb.wb_obj);
467 rdev->wb.wb_obj = NULL;
472 * radeon_wb_init- Init Writeback driver info and allocate memory
474 * @rdev: radeon_device pointer
476 * Disables Writeback and frees the Writeback memory (all asics).
477 * Used at driver startup.
478 * Returns 0 on success or an -error on failure.
480 int radeon_wb_init(struct radeon_device *rdev)
484 if (rdev->wb.wb_obj == NULL) {
485 r = radeon_bo_create(rdev, RADEON_GPU_PAGE_SIZE, PAGE_SIZE, true,
486 RADEON_GEM_DOMAIN_GTT, 0, NULL, NULL,
489 dev_warn(rdev->dev, "(%d) create WB bo failed\n", r);
492 r = radeon_bo_reserve(rdev->wb.wb_obj, false);
493 if (unlikely(r != 0)) {
494 radeon_wb_fini(rdev);
497 r = radeon_bo_pin(rdev->wb.wb_obj, RADEON_GEM_DOMAIN_GTT,
500 radeon_bo_unreserve(rdev->wb.wb_obj);
501 dev_warn(rdev->dev, "(%d) pin WB bo failed\n", r);
502 radeon_wb_fini(rdev);
505 r = radeon_bo_kmap(rdev->wb.wb_obj, (void **)&rdev->wb.wb);
506 radeon_bo_unreserve(rdev->wb.wb_obj);
508 dev_warn(rdev->dev, "(%d) map WB bo failed\n", r);
509 radeon_wb_fini(rdev);
514 /* clear wb memory */
515 memset((char *)rdev->wb.wb, 0, RADEON_GPU_PAGE_SIZE);
516 /* disable event_write fences */
517 rdev->wb.use_event = false;
518 /* disabled via module param */
519 if (radeon_no_wb == 1) {
520 rdev->wb.enabled = false;
522 if (rdev->flags & RADEON_IS_AGP) {
523 /* often unreliable on AGP */
524 rdev->wb.enabled = false;
525 } else if (rdev->family < CHIP_R300) {
526 /* often unreliable on pre-r300 */
527 rdev->wb.enabled = false;
529 rdev->wb.enabled = true;
530 /* event_write fences are only available on r600+ */
531 if (rdev->family >= CHIP_R600) {
532 rdev->wb.use_event = true;
536 /* always use writeback/events on NI, APUs */
537 if (rdev->family >= CHIP_PALM) {
538 rdev->wb.enabled = true;
539 rdev->wb.use_event = true;
542 dev_info(rdev->dev, "WB %sabled\n", rdev->wb.enabled ? "en" : "dis");
548 * radeon_vram_location - try to find VRAM location
549 * @rdev: radeon device structure holding all necessary informations
550 * @mc: memory controller structure holding memory informations
551 * @base: base address at which to put VRAM
553 * Function will place try to place VRAM at base address provided
554 * as parameter (which is so far either PCI aperture address or
555 * for IGP TOM base address).
557 * If there is not enough space to fit the unvisible VRAM in the 32bits
558 * address space then we limit the VRAM size to the aperture.
560 * If we are using AGP and if the AGP aperture doesn't allow us to have
561 * room for all the VRAM than we restrict the VRAM to the PCI aperture
562 * size and print a warning.
564 * This function will never fails, worst case are limiting VRAM.
566 * Note: GTT start, end, size should be initialized before calling this
567 * function on AGP platform.
569 * Note: We don't explicitly enforce VRAM start to be aligned on VRAM size,
570 * this shouldn't be a problem as we are using the PCI aperture as a reference.
571 * Otherwise this would be needed for rv280, all r3xx, and all r4xx, but
574 * Note: we use mc_vram_size as on some board we need to program the mc to
575 * cover the whole aperture even if VRAM size is inferior to aperture size
576 * Novell bug 204882 + along with lots of ubuntu ones
578 * Note: when limiting vram it's safe to overwritte real_vram_size because
579 * we are not in case where real_vram_size is inferior to mc_vram_size (ie
580 * note afected by bogus hw of Novell bug 204882 + along with lots of ubuntu
583 * Note: IGP TOM addr should be the same as the aperture addr, we don't
584 * explicitly check for that thought.
586 * FIXME: when reducing VRAM size align new size on power of 2.
588 void radeon_vram_location(struct radeon_device *rdev, struct radeon_mc *mc, u64 base)
590 uint64_t limit = (uint64_t)radeon_vram_limit << 20;
592 mc->vram_start = base;
593 if (mc->mc_vram_size > (rdev->mc.mc_mask - base + 1)) {
594 dev_warn(rdev->dev, "limiting VRAM to PCI aperture size\n");
595 mc->real_vram_size = mc->aper_size;
596 mc->mc_vram_size = mc->aper_size;
598 mc->vram_end = mc->vram_start + mc->mc_vram_size - 1;
599 if (rdev->flags & RADEON_IS_AGP && mc->vram_end > mc->gtt_start && mc->vram_start <= mc->gtt_end) {
600 dev_warn(rdev->dev, "limiting VRAM to PCI aperture size\n");
601 mc->real_vram_size = mc->aper_size;
602 mc->mc_vram_size = mc->aper_size;
604 mc->vram_end = mc->vram_start + mc->mc_vram_size - 1;
605 if (limit && limit < mc->real_vram_size)
606 mc->real_vram_size = limit;
607 dev_info(rdev->dev, "VRAM: %lluM 0x%016llX - 0x%016llX (%lluM used)\n",
608 mc->mc_vram_size >> 20, mc->vram_start,
609 mc->vram_end, mc->real_vram_size >> 20);
613 * radeon_gtt_location - try to find GTT location
614 * @rdev: radeon device structure holding all necessary informations
615 * @mc: memory controller structure holding memory informations
617 * Function will place try to place GTT before or after VRAM.
619 * If GTT size is bigger than space left then we ajust GTT size.
620 * Thus function will never fails.
622 * FIXME: when reducing GTT size align new size on power of 2.
624 void radeon_gtt_location(struct radeon_device *rdev, struct radeon_mc *mc)
626 u64 size_af, size_bf;
628 size_af = ((rdev->mc.mc_mask - mc->vram_end) + mc->gtt_base_align) & ~mc->gtt_base_align;
629 size_bf = mc->vram_start & ~mc->gtt_base_align;
630 if (size_bf > size_af) {
631 if (mc->gtt_size > size_bf) {
632 dev_warn(rdev->dev, "limiting GTT\n");
633 mc->gtt_size = size_bf;
635 mc->gtt_start = (mc->vram_start & ~mc->gtt_base_align) - mc->gtt_size;
637 if (mc->gtt_size > size_af) {
638 dev_warn(rdev->dev, "limiting GTT\n");
639 mc->gtt_size = size_af;
641 mc->gtt_start = (mc->vram_end + 1 + mc->gtt_base_align) & ~mc->gtt_base_align;
643 mc->gtt_end = mc->gtt_start + mc->gtt_size - 1;
644 dev_info(rdev->dev, "GTT: %lluM 0x%016llX - 0x%016llX\n",
645 mc->gtt_size >> 20, mc->gtt_start, mc->gtt_end);
649 * GPU helpers function.
653 * radeon_device_is_virtual - check if we are running is a virtual environment
655 * Check if the asic has been passed through to a VM (all asics).
656 * Used at driver startup.
657 * Returns true if virtual or false if not.
659 bool radeon_device_is_virtual(void)
662 return boot_cpu_has(X86_FEATURE_HYPERVISOR);
669 * radeon_card_posted - check if the hw has already been initialized
671 * @rdev: radeon_device pointer
673 * Check if the asic has been initialized (all asics).
674 * Used at driver startup.
675 * Returns true if initialized or false if not.
677 bool radeon_card_posted(struct radeon_device *rdev)
681 /* for pass through, always force asic_init for CI */
682 if (rdev->family >= CHIP_BONAIRE &&
683 radeon_device_is_virtual())
686 /* required for EFI mode on macbook2,1 which uses an r5xx asic */
687 if (efi_enabled(EFI_BOOT) &&
688 (rdev->pdev->subsystem_vendor == PCI_VENDOR_ID_APPLE) &&
689 (rdev->family < CHIP_R600))
692 if (ASIC_IS_NODCE(rdev))
695 /* first check CRTCs */
696 if (ASIC_IS_DCE4(rdev)) {
697 reg = RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC0_REGISTER_OFFSET) |
698 RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC1_REGISTER_OFFSET);
699 if (rdev->num_crtc >= 4) {
700 reg |= RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC2_REGISTER_OFFSET) |
701 RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC3_REGISTER_OFFSET);
703 if (rdev->num_crtc >= 6) {
704 reg |= RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC4_REGISTER_OFFSET) |
705 RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC5_REGISTER_OFFSET);
707 if (reg & EVERGREEN_CRTC_MASTER_EN)
709 } else if (ASIC_IS_AVIVO(rdev)) {
710 reg = RREG32(AVIVO_D1CRTC_CONTROL) |
711 RREG32(AVIVO_D2CRTC_CONTROL);
712 if (reg & AVIVO_CRTC_EN) {
716 reg = RREG32(RADEON_CRTC_GEN_CNTL) |
717 RREG32(RADEON_CRTC2_GEN_CNTL);
718 if (reg & RADEON_CRTC_EN) {
724 /* then check MEM_SIZE, in case the crtcs are off */
725 if (rdev->family >= CHIP_R600)
726 reg = RREG32(R600_CONFIG_MEMSIZE);
728 reg = RREG32(RADEON_CONFIG_MEMSIZE);
738 * radeon_update_bandwidth_info - update display bandwidth params
740 * @rdev: radeon_device pointer
742 * Used when sclk/mclk are switched or display modes are set.
743 * params are used to calculate display watermarks (all asics)
745 void radeon_update_bandwidth_info(struct radeon_device *rdev)
748 u32 sclk = rdev->pm.current_sclk;
749 u32 mclk = rdev->pm.current_mclk;
751 /* sclk/mclk in Mhz */
752 a.full = dfixed_const(100);
753 rdev->pm.sclk.full = dfixed_const(sclk);
754 rdev->pm.sclk.full = dfixed_div(rdev->pm.sclk, a);
755 rdev->pm.mclk.full = dfixed_const(mclk);
756 rdev->pm.mclk.full = dfixed_div(rdev->pm.mclk, a);
758 if (rdev->flags & RADEON_IS_IGP) {
759 a.full = dfixed_const(16);
760 /* core_bandwidth = sclk(Mhz) * 16 */
761 rdev->pm.core_bandwidth.full = dfixed_div(rdev->pm.sclk, a);
766 * radeon_boot_test_post_card - check and possibly initialize the hw
768 * @rdev: radeon_device pointer
770 * Check if the asic is initialized and if not, attempt to initialize
772 * Returns true if initialized or false if not.
774 bool radeon_boot_test_post_card(struct radeon_device *rdev)
776 if (radeon_card_posted(rdev))
780 DRM_INFO("GPU not posted. posting now...\n");
781 if (rdev->is_atom_bios)
782 atom_asic_init(rdev->mode_info.atom_context);
784 radeon_combios_asic_init(rdev->ddev);
787 dev_err(rdev->dev, "Card not posted and no BIOS - ignoring\n");
793 * radeon_dummy_page_init - init dummy page used by the driver
795 * @rdev: radeon_device pointer
797 * Allocate the dummy page used by the driver (all asics).
798 * This dummy page is used by the driver as a filler for gart entries
799 * when pages are taken out of the GART
800 * Returns 0 on sucess, -ENOMEM on failure.
802 int radeon_dummy_page_init(struct radeon_device *rdev)
804 if (rdev->dummy_page.page)
806 rdev->dummy_page.page = alloc_page(GFP_DMA32 | GFP_KERNEL | __GFP_ZERO);
807 if (rdev->dummy_page.page == NULL)
809 rdev->dummy_page.addr = pci_map_page(rdev->pdev, rdev->dummy_page.page,
810 0, PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
811 if (pci_dma_mapping_error(rdev->pdev, rdev->dummy_page.addr)) {
812 dev_err(&rdev->pdev->dev, "Failed to DMA MAP the dummy page\n");
813 __free_page(rdev->dummy_page.page);
814 rdev->dummy_page.page = NULL;
817 rdev->dummy_page.entry = radeon_gart_get_page_entry(rdev->dummy_page.addr,
818 RADEON_GART_PAGE_DUMMY);
823 * radeon_dummy_page_fini - free dummy page used by the driver
825 * @rdev: radeon_device pointer
827 * Frees the dummy page used by the driver (all asics).
829 void radeon_dummy_page_fini(struct radeon_device *rdev)
831 if (rdev->dummy_page.page == NULL)
833 pci_unmap_page(rdev->pdev, rdev->dummy_page.addr,
834 PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
835 __free_page(rdev->dummy_page.page);
836 rdev->dummy_page.page = NULL;
840 /* ATOM accessor methods */
842 * ATOM is an interpreted byte code stored in tables in the vbios. The
843 * driver registers callbacks to access registers and the interpreter
844 * in the driver parses the tables and executes then to program specific
845 * actions (set display modes, asic init, etc.). See radeon_atombios.c,
846 * atombios.h, and atom.c
850 * cail_pll_read - read PLL register
852 * @info: atom card_info pointer
853 * @reg: PLL register offset
855 * Provides a PLL register accessor for the atom interpreter (r4xx+).
856 * Returns the value of the PLL register.
858 static uint32_t cail_pll_read(struct card_info *info, uint32_t reg)
860 struct radeon_device *rdev = info->dev->dev_private;
863 r = rdev->pll_rreg(rdev, reg);
868 * cail_pll_write - write PLL register
870 * @info: atom card_info pointer
871 * @reg: PLL register offset
872 * @val: value to write to the pll register
874 * Provides a PLL register accessor for the atom interpreter (r4xx+).
876 static void cail_pll_write(struct card_info *info, uint32_t reg, uint32_t val)
878 struct radeon_device *rdev = info->dev->dev_private;
880 rdev->pll_wreg(rdev, reg, val);
884 * cail_mc_read - read MC (Memory Controller) register
886 * @info: atom card_info pointer
887 * @reg: MC register offset
889 * Provides an MC register accessor for the atom interpreter (r4xx+).
890 * Returns the value of the MC register.
892 static uint32_t cail_mc_read(struct card_info *info, uint32_t reg)
894 struct radeon_device *rdev = info->dev->dev_private;
897 r = rdev->mc_rreg(rdev, reg);
902 * cail_mc_write - write MC (Memory Controller) register
904 * @info: atom card_info pointer
905 * @reg: MC register offset
906 * @val: value to write to the pll register
908 * Provides a MC register accessor for the atom interpreter (r4xx+).
910 static void cail_mc_write(struct card_info *info, uint32_t reg, uint32_t val)
912 struct radeon_device *rdev = info->dev->dev_private;
914 rdev->mc_wreg(rdev, reg, val);
918 * cail_reg_write - write MMIO register
920 * @info: atom card_info pointer
921 * @reg: MMIO register offset
922 * @val: value to write to the pll register
924 * Provides a MMIO register accessor for the atom interpreter (r4xx+).
926 static void cail_reg_write(struct card_info *info, uint32_t reg, uint32_t val)
928 struct radeon_device *rdev = info->dev->dev_private;
934 * cail_reg_read - read MMIO register
936 * @info: atom card_info pointer
937 * @reg: MMIO register offset
939 * Provides an MMIO register accessor for the atom interpreter (r4xx+).
940 * Returns the value of the MMIO register.
942 static uint32_t cail_reg_read(struct card_info *info, uint32_t reg)
944 struct radeon_device *rdev = info->dev->dev_private;
952 * cail_ioreg_write - write IO register
954 * @info: atom card_info pointer
955 * @reg: IO register offset
956 * @val: value to write to the pll register
958 * Provides a IO register accessor for the atom interpreter (r4xx+).
960 static void cail_ioreg_write(struct card_info *info, uint32_t reg, uint32_t val)
962 struct radeon_device *rdev = info->dev->dev_private;
964 WREG32_IO(reg*4, val);
968 * cail_ioreg_read - read IO register
970 * @info: atom card_info pointer
971 * @reg: IO register offset
973 * Provides an IO register accessor for the atom interpreter (r4xx+).
974 * Returns the value of the IO register.
976 static uint32_t cail_ioreg_read(struct card_info *info, uint32_t reg)
978 struct radeon_device *rdev = info->dev->dev_private;
981 r = RREG32_IO(reg*4);
986 * radeon_atombios_init - init the driver info and callbacks for atombios
988 * @rdev: radeon_device pointer
990 * Initializes the driver info and register access callbacks for the
991 * ATOM interpreter (r4xx+).
992 * Returns 0 on sucess, -ENOMEM on failure.
993 * Called at driver startup.
995 int radeon_atombios_init(struct radeon_device *rdev)
997 struct card_info *atom_card_info =
998 kzalloc(sizeof(struct card_info), GFP_KERNEL);
1000 if (!atom_card_info)
1003 rdev->mode_info.atom_card_info = atom_card_info;
1004 atom_card_info->dev = rdev->ddev;
1005 atom_card_info->reg_read = cail_reg_read;
1006 atom_card_info->reg_write = cail_reg_write;
1007 /* needed for iio ops */
1008 if (rdev->rio_mem) {
1009 atom_card_info->ioreg_read = cail_ioreg_read;
1010 atom_card_info->ioreg_write = cail_ioreg_write;
1012 DRM_ERROR("Unable to find PCI I/O BAR; using MMIO for ATOM IIO\n");
1013 atom_card_info->ioreg_read = cail_reg_read;
1014 atom_card_info->ioreg_write = cail_reg_write;
1016 atom_card_info->mc_read = cail_mc_read;
1017 atom_card_info->mc_write = cail_mc_write;
1018 atom_card_info->pll_read = cail_pll_read;
1019 atom_card_info->pll_write = cail_pll_write;
1021 rdev->mode_info.atom_context = atom_parse(atom_card_info, rdev->bios);
1022 if (!rdev->mode_info.atom_context) {
1023 radeon_atombios_fini(rdev);
1027 mutex_init(&rdev->mode_info.atom_context->mutex);
1028 mutex_init(&rdev->mode_info.atom_context->scratch_mutex);
1029 radeon_atom_initialize_bios_scratch_regs(rdev->ddev);
1030 atom_allocate_fb_scratch(rdev->mode_info.atom_context);
1035 * radeon_atombios_fini - free the driver info and callbacks for atombios
1037 * @rdev: radeon_device pointer
1039 * Frees the driver info and register access callbacks for the ATOM
1040 * interpreter (r4xx+).
1041 * Called at driver shutdown.
1043 void radeon_atombios_fini(struct radeon_device *rdev)
1045 if (rdev->mode_info.atom_context) {
1046 kfree(rdev->mode_info.atom_context->scratch);
1048 kfree(rdev->mode_info.atom_context);
1049 rdev->mode_info.atom_context = NULL;
1050 kfree(rdev->mode_info.atom_card_info);
1051 rdev->mode_info.atom_card_info = NULL;
1056 * COMBIOS is the bios format prior to ATOM. It provides
1057 * command tables similar to ATOM, but doesn't have a unified
1058 * parser. See radeon_combios.c
1062 * radeon_combios_init - init the driver info for combios
1064 * @rdev: radeon_device pointer
1066 * Initializes the driver info for combios (r1xx-r3xx).
1067 * Returns 0 on sucess.
1068 * Called at driver startup.
1070 int radeon_combios_init(struct radeon_device *rdev)
1072 radeon_combios_initialize_bios_scratch_regs(rdev->ddev);
1077 * radeon_combios_fini - free the driver info for combios
1079 * @rdev: radeon_device pointer
1081 * Frees the driver info for combios (r1xx-r3xx).
1082 * Called at driver shutdown.
1084 void radeon_combios_fini(struct radeon_device *rdev)
1088 /* if we get transitioned to only one device, take VGA back */
1090 * radeon_vga_set_decode - enable/disable vga decode
1092 * @cookie: radeon_device pointer
1093 * @state: enable/disable vga decode
1095 * Enable/disable vga decode (all asics).
1096 * Returns VGA resource flags.
1098 static unsigned int radeon_vga_set_decode(void *cookie, bool state)
1100 struct radeon_device *rdev = cookie;
1101 radeon_vga_set_state(rdev, state);
1103 return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
1104 VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
1106 return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
1110 * radeon_check_pot_argument - check that argument is a power of two
1112 * @arg: value to check
1114 * Validates that a certain argument is a power of two (all asics).
1115 * Returns true if argument is valid.
1117 static bool radeon_check_pot_argument(int arg)
1119 return (arg & (arg - 1)) == 0;
1123 * Determine a sensible default GART size according to ASIC family.
1125 * @family ASIC family name
1127 static int radeon_gart_size_auto(enum radeon_family family)
1129 /* default to a larger gart size on newer asics */
1130 if (family >= CHIP_TAHITI)
1132 else if (family >= CHIP_RV770)
1139 * radeon_check_arguments - validate module params
1141 * @rdev: radeon_device pointer
1143 * Validates certain module parameters and updates
1144 * the associated values used by the driver (all asics).
1146 static void radeon_check_arguments(struct radeon_device *rdev)
1148 /* vramlimit must be a power of two */
1149 if (!radeon_check_pot_argument(radeon_vram_limit)) {
1150 dev_warn(rdev->dev, "vram limit (%d) must be a power of 2\n",
1152 radeon_vram_limit = 0;
1155 if (radeon_gart_size == -1) {
1156 radeon_gart_size = radeon_gart_size_auto(rdev->family);
1158 /* gtt size must be power of two and greater or equal to 32M */
1159 if (radeon_gart_size < 32) {
1160 dev_warn(rdev->dev, "gart size (%d) too small\n",
1162 radeon_gart_size = radeon_gart_size_auto(rdev->family);
1163 } else if (!radeon_check_pot_argument(radeon_gart_size)) {
1164 dev_warn(rdev->dev, "gart size (%d) must be a power of 2\n",
1166 radeon_gart_size = radeon_gart_size_auto(rdev->family);
1168 rdev->mc.gtt_size = (uint64_t)radeon_gart_size << 20;
1170 /* AGP mode can only be -1, 1, 2, 4, 8 */
1171 switch (radeon_agpmode) {
1180 dev_warn(rdev->dev, "invalid AGP mode %d (valid mode: "
1181 "-1, 0, 1, 2, 4, 8)\n", radeon_agpmode);
1186 if (!radeon_check_pot_argument(radeon_vm_size)) {
1187 dev_warn(rdev->dev, "VM size (%d) must be a power of 2\n",
1192 if (radeon_vm_size < 1) {
1193 dev_warn(rdev->dev, "VM size (%d) too small, min is 1GB\n",
1199 * Max GPUVM size for Cayman, SI and CI are 40 bits.
1201 if (radeon_vm_size > 1024) {
1202 dev_warn(rdev->dev, "VM size (%d) too large, max is 1TB\n",
1207 /* defines number of bits in page table versus page directory,
1208 * a page is 4KB so we have 12 bits offset, minimum 9 bits in the
1209 * page table and the remaining bits are in the page directory */
1210 if (radeon_vm_block_size == -1) {
1212 /* Total bits covered by PD + PTs */
1213 unsigned bits = ilog2(radeon_vm_size) + 18;
1215 /* Make sure the PD is 4K in size up to 8GB address space.
1216 Above that split equal between PD and PTs */
1217 if (radeon_vm_size <= 8)
1218 radeon_vm_block_size = bits - 9;
1220 radeon_vm_block_size = (bits + 3) / 2;
1222 } else if (radeon_vm_block_size < 9) {
1223 dev_warn(rdev->dev, "VM page table size (%d) too small\n",
1224 radeon_vm_block_size);
1225 radeon_vm_block_size = 9;
1228 if (radeon_vm_block_size > 24 ||
1229 (radeon_vm_size * 1024) < (1ull << radeon_vm_block_size)) {
1230 dev_warn(rdev->dev, "VM page table size (%d) too large\n",
1231 radeon_vm_block_size);
1232 radeon_vm_block_size = 9;
1237 * radeon_switcheroo_set_state - set switcheroo state
1239 * @pdev: pci dev pointer
1240 * @state: vga_switcheroo state
1242 * Callback for the switcheroo driver. Suspends or resumes the
1243 * the asics before or after it is powered up using ACPI methods.
1245 static void radeon_switcheroo_set_state(struct pci_dev *pdev, enum vga_switcheroo_state state)
1247 struct drm_device *dev = pci_get_drvdata(pdev);
1248 struct radeon_device *rdev = dev->dev_private;
1250 if (radeon_is_px(dev) && state == VGA_SWITCHEROO_OFF)
1253 if (state == VGA_SWITCHEROO_ON) {
1254 unsigned d3_delay = dev->pdev->d3_delay;
1256 printk(KERN_INFO "radeon: switched on\n");
1257 /* don't suspend or resume card normally */
1258 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
1260 if (d3_delay < 20 && (rdev->px_quirk_flags & RADEON_PX_QUIRK_LONG_WAKEUP))
1261 dev->pdev->d3_delay = 20;
1263 radeon_resume_kms(dev, true, true);
1265 dev->pdev->d3_delay = d3_delay;
1267 dev->switch_power_state = DRM_SWITCH_POWER_ON;
1268 drm_kms_helper_poll_enable(dev);
1270 printk(KERN_INFO "radeon: switched off\n");
1271 drm_kms_helper_poll_disable(dev);
1272 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
1273 radeon_suspend_kms(dev, true, true, false);
1274 dev->switch_power_state = DRM_SWITCH_POWER_OFF;
1279 * radeon_switcheroo_can_switch - see if switcheroo state can change
1281 * @pdev: pci dev pointer
1283 * Callback for the switcheroo driver. Check of the switcheroo
1284 * state can be changed.
1285 * Returns true if the state can be changed, false if not.
1287 static bool radeon_switcheroo_can_switch(struct pci_dev *pdev)
1289 struct drm_device *dev = pci_get_drvdata(pdev);
1292 * FIXME: open_count is protected by drm_global_mutex but that would lead to
1293 * locking inversion with the driver load path. And the access here is
1294 * completely racy anyway. So don't bother with locking for now.
1296 return dev->open_count == 0;
1299 static const struct vga_switcheroo_client_ops radeon_switcheroo_ops = {
1300 .set_gpu_state = radeon_switcheroo_set_state,
1302 .can_switch = radeon_switcheroo_can_switch,
1306 * radeon_device_init - initialize the driver
1308 * @rdev: radeon_device pointer
1309 * @pdev: drm dev pointer
1310 * @pdev: pci dev pointer
1311 * @flags: driver flags
1313 * Initializes the driver info and hw (all asics).
1314 * Returns 0 for success or an error on failure.
1315 * Called at driver startup.
1317 int radeon_device_init(struct radeon_device *rdev,
1318 struct drm_device *ddev,
1319 struct pci_dev *pdev,
1324 bool runtime = false;
1326 rdev->shutdown = false;
1327 rdev->dev = &pdev->dev;
1330 rdev->flags = flags;
1331 rdev->family = flags & RADEON_FAMILY_MASK;
1332 rdev->is_atom_bios = false;
1333 rdev->usec_timeout = RADEON_MAX_USEC_TIMEOUT;
1334 rdev->mc.gtt_size = 512 * 1024 * 1024;
1335 rdev->accel_working = false;
1336 /* set up ring ids */
1337 for (i = 0; i < RADEON_NUM_RINGS; i++) {
1338 rdev->ring[i].idx = i;
1340 rdev->fence_context = fence_context_alloc(RADEON_NUM_RINGS);
1342 DRM_INFO("initializing kernel modesetting (%s 0x%04X:0x%04X 0x%04X:0x%04X 0x%02X).\n",
1343 radeon_family_name[rdev->family], pdev->vendor, pdev->device,
1344 pdev->subsystem_vendor, pdev->subsystem_device, pdev->revision);
1346 /* mutex initialization are all done here so we
1347 * can recall function without having locking issues */
1348 mutex_init(&rdev->ring_lock);
1349 mutex_init(&rdev->dc_hw_i2c_mutex);
1350 atomic_set(&rdev->ih.lock, 0);
1351 mutex_init(&rdev->gem.mutex);
1352 mutex_init(&rdev->pm.mutex);
1353 mutex_init(&rdev->gpu_clock_mutex);
1354 mutex_init(&rdev->srbm_mutex);
1355 mutex_init(&rdev->grbm_idx_mutex);
1356 init_rwsem(&rdev->pm.mclk_lock);
1357 init_rwsem(&rdev->exclusive_lock);
1358 init_waitqueue_head(&rdev->irq.vblank_queue);
1359 mutex_init(&rdev->mn_lock);
1360 hash_init(rdev->mn_hash);
1361 r = radeon_gem_init(rdev);
1365 radeon_check_arguments(rdev);
1366 /* Adjust VM size here.
1367 * Max GPUVM size for cayman+ is 40 bits.
1369 rdev->vm_manager.max_pfn = radeon_vm_size << 18;
1371 /* Set asic functions */
1372 r = radeon_asic_init(rdev);
1376 /* all of the newer IGP chips have an internal gart
1377 * However some rs4xx report as AGP, so remove that here.
1379 if ((rdev->family >= CHIP_RS400) &&
1380 (rdev->flags & RADEON_IS_IGP)) {
1381 rdev->flags &= ~RADEON_IS_AGP;
1384 if (rdev->flags & RADEON_IS_AGP && radeon_agpmode == -1) {
1385 radeon_agp_disable(rdev);
1388 /* Set the internal MC address mask
1389 * This is the max address of the GPU's
1390 * internal address space.
1392 if (rdev->family >= CHIP_CAYMAN)
1393 rdev->mc.mc_mask = 0xffffffffffULL; /* 40 bit MC */
1394 else if (rdev->family >= CHIP_CEDAR)
1395 rdev->mc.mc_mask = 0xfffffffffULL; /* 36 bit MC */
1397 rdev->mc.mc_mask = 0xffffffffULL; /* 32 bit MC */
1399 /* set DMA mask + need_dma32 flags.
1400 * PCIE - can handle 40-bits.
1401 * IGP - can handle 40-bits
1402 * AGP - generally dma32 is safest
1403 * PCI - dma32 for legacy pci gart, 40 bits on newer asics
1405 rdev->need_dma32 = false;
1406 if (rdev->flags & RADEON_IS_AGP)
1407 rdev->need_dma32 = true;
1408 if ((rdev->flags & RADEON_IS_PCI) &&
1409 (rdev->family <= CHIP_RS740))
1410 rdev->need_dma32 = true;
1412 dma_bits = rdev->need_dma32 ? 32 : 40;
1413 r = pci_set_dma_mask(rdev->pdev, DMA_BIT_MASK(dma_bits));
1415 rdev->need_dma32 = true;
1417 printk(KERN_WARNING "radeon: No suitable DMA available.\n");
1419 r = pci_set_consistent_dma_mask(rdev->pdev, DMA_BIT_MASK(dma_bits));
1421 pci_set_consistent_dma_mask(rdev->pdev, DMA_BIT_MASK(32));
1422 printk(KERN_WARNING "radeon: No coherent DMA available.\n");
1425 /* Registers mapping */
1426 /* TODO: block userspace mapping of io register */
1427 spin_lock_init(&rdev->mmio_idx_lock);
1428 spin_lock_init(&rdev->smc_idx_lock);
1429 spin_lock_init(&rdev->pll_idx_lock);
1430 spin_lock_init(&rdev->mc_idx_lock);
1431 spin_lock_init(&rdev->pcie_idx_lock);
1432 spin_lock_init(&rdev->pciep_idx_lock);
1433 spin_lock_init(&rdev->pif_idx_lock);
1434 spin_lock_init(&rdev->cg_idx_lock);
1435 spin_lock_init(&rdev->uvd_idx_lock);
1436 spin_lock_init(&rdev->rcu_idx_lock);
1437 spin_lock_init(&rdev->didt_idx_lock);
1438 spin_lock_init(&rdev->end_idx_lock);
1439 if (rdev->family >= CHIP_BONAIRE) {
1440 rdev->rmmio_base = pci_resource_start(rdev->pdev, 5);
1441 rdev->rmmio_size = pci_resource_len(rdev->pdev, 5);
1443 rdev->rmmio_base = pci_resource_start(rdev->pdev, 2);
1444 rdev->rmmio_size = pci_resource_len(rdev->pdev, 2);
1446 rdev->rmmio = ioremap(rdev->rmmio_base, rdev->rmmio_size);
1447 if (rdev->rmmio == NULL) {
1450 DRM_INFO("register mmio base: 0x%08X\n", (uint32_t)rdev->rmmio_base);
1451 DRM_INFO("register mmio size: %u\n", (unsigned)rdev->rmmio_size);
1453 /* doorbell bar mapping */
1454 if (rdev->family >= CHIP_BONAIRE)
1455 radeon_doorbell_init(rdev);
1457 /* io port mapping */
1458 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
1459 if (pci_resource_flags(rdev->pdev, i) & IORESOURCE_IO) {
1460 rdev->rio_mem_size = pci_resource_len(rdev->pdev, i);
1461 rdev->rio_mem = pci_iomap(rdev->pdev, i, rdev->rio_mem_size);
1465 if (rdev->rio_mem == NULL)
1466 DRM_ERROR("Unable to find PCI I/O BAR\n");
1468 if (rdev->flags & RADEON_IS_PX)
1469 radeon_device_handle_px_quirks(rdev);
1471 /* if we have > 1 VGA cards, then disable the radeon VGA resources */
1472 /* this will fail for cards that aren't VGA class devices, just
1474 vga_client_register(rdev->pdev, rdev, NULL, radeon_vga_set_decode);
1476 if (rdev->flags & RADEON_IS_PX)
1478 vga_switcheroo_register_client(rdev->pdev, &radeon_switcheroo_ops, runtime);
1480 vga_switcheroo_init_domain_pm_ops(rdev->dev, &rdev->vga_pm_domain);
1482 r = radeon_init(rdev);
1486 r = radeon_gem_debugfs_init(rdev);
1488 DRM_ERROR("registering gem debugfs failed (%d).\n", r);
1491 r = radeon_mst_debugfs_init(rdev);
1493 DRM_ERROR("registering mst debugfs failed (%d).\n", r);
1496 if (rdev->flags & RADEON_IS_AGP && !rdev->accel_working) {
1497 /* Acceleration not working on AGP card try again
1498 * with fallback to PCI or PCIE GART
1500 radeon_asic_reset(rdev);
1502 radeon_agp_disable(rdev);
1503 r = radeon_init(rdev);
1508 r = radeon_ib_ring_tests(rdev);
1510 DRM_ERROR("ib ring test failed (%d).\n", r);
1513 * Turks/Thames GPU will freeze whole laptop if DPM is not restarted
1514 * after the CP ring have chew one packet at least. Hence here we stop
1515 * and restart DPM after the radeon_ib_ring_tests().
1517 if (rdev->pm.dpm_enabled &&
1518 (rdev->pm.pm_method == PM_METHOD_DPM) &&
1519 (rdev->family == CHIP_TURKS) &&
1520 (rdev->flags & RADEON_IS_MOBILITY)) {
1521 mutex_lock(&rdev->pm.mutex);
1522 radeon_dpm_disable(rdev);
1523 radeon_dpm_enable(rdev);
1524 mutex_unlock(&rdev->pm.mutex);
1527 if ((radeon_testing & 1)) {
1528 if (rdev->accel_working)
1529 radeon_test_moves(rdev);
1531 DRM_INFO("radeon: acceleration disabled, skipping move tests\n");
1533 if ((radeon_testing & 2)) {
1534 if (rdev->accel_working)
1535 radeon_test_syncing(rdev);
1537 DRM_INFO("radeon: acceleration disabled, skipping sync tests\n");
1539 if (radeon_benchmarking) {
1540 if (rdev->accel_working)
1541 radeon_benchmark(rdev, radeon_benchmarking);
1543 DRM_INFO("radeon: acceleration disabled, skipping benchmarks\n");
1548 /* balance pm_runtime_get_sync() in radeon_driver_unload_kms() */
1549 if (radeon_is_px(ddev))
1550 pm_runtime_put_noidle(ddev->dev);
1552 vga_switcheroo_fini_domain_pm_ops(rdev->dev);
1556 static void radeon_debugfs_remove_files(struct radeon_device *rdev);
1559 * radeon_device_fini - tear down the driver
1561 * @rdev: radeon_device pointer
1563 * Tear down the driver info (all asics).
1564 * Called at driver shutdown.
1566 void radeon_device_fini(struct radeon_device *rdev)
1568 DRM_INFO("radeon: finishing device.\n");
1569 rdev->shutdown = true;
1570 /* evict vram memory */
1571 radeon_bo_evict_vram(rdev);
1573 vga_switcheroo_unregister_client(rdev->pdev);
1574 if (rdev->flags & RADEON_IS_PX)
1575 vga_switcheroo_fini_domain_pm_ops(rdev->dev);
1576 vga_client_register(rdev->pdev, NULL, NULL, NULL);
1578 pci_iounmap(rdev->pdev, rdev->rio_mem);
1579 rdev->rio_mem = NULL;
1580 iounmap(rdev->rmmio);
1582 if (rdev->family >= CHIP_BONAIRE)
1583 radeon_doorbell_fini(rdev);
1584 radeon_debugfs_remove_files(rdev);
1592 * radeon_suspend_kms - initiate device suspend
1594 * @pdev: drm dev pointer
1595 * @state: suspend state
1597 * Puts the hw in the suspend state (all asics).
1598 * Returns 0 for success or an error on failure.
1599 * Called at driver suspend.
1601 int radeon_suspend_kms(struct drm_device *dev, bool suspend,
1602 bool fbcon, bool freeze)
1604 struct radeon_device *rdev;
1605 struct drm_crtc *crtc;
1606 struct drm_connector *connector;
1609 if (dev == NULL || dev->dev_private == NULL) {
1613 rdev = dev->dev_private;
1615 if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
1618 drm_kms_helper_poll_disable(dev);
1620 drm_modeset_lock_all(dev);
1621 /* turn off display hw */
1622 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1623 drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
1625 drm_modeset_unlock_all(dev);
1627 /* unpin the front buffers and cursors */
1628 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
1629 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
1630 struct radeon_framebuffer *rfb = to_radeon_framebuffer(crtc->primary->fb);
1631 struct radeon_bo *robj;
1633 if (radeon_crtc->cursor_bo) {
1634 struct radeon_bo *robj = gem_to_radeon_bo(radeon_crtc->cursor_bo);
1635 r = radeon_bo_reserve(robj, false);
1637 radeon_bo_unpin(robj);
1638 radeon_bo_unreserve(robj);
1642 if (rfb == NULL || rfb->obj == NULL) {
1645 robj = gem_to_radeon_bo(rfb->obj);
1646 /* don't unpin kernel fb objects */
1647 if (!radeon_fbdev_robj_is_fb(rdev, robj)) {
1648 r = radeon_bo_reserve(robj, false);
1650 radeon_bo_unpin(robj);
1651 radeon_bo_unreserve(robj);
1655 /* evict vram memory */
1656 radeon_bo_evict_vram(rdev);
1658 /* wait for gpu to finish processing current batch */
1659 for (i = 0; i < RADEON_NUM_RINGS; i++) {
1660 r = radeon_fence_wait_empty(rdev, i);
1662 /* delay GPU reset to resume */
1663 radeon_fence_driver_force_completion(rdev, i);
1667 radeon_save_bios_scratch_regs(rdev);
1669 radeon_suspend(rdev);
1670 radeon_hpd_fini(rdev);
1671 /* evict remaining vram memory */
1672 radeon_bo_evict_vram(rdev);
1674 radeon_agp_suspend(rdev);
1676 pci_save_state(dev->pdev);
1677 if (freeze && rdev->family >= CHIP_CEDAR && !(rdev->flags & RADEON_IS_IGP)) {
1678 rdev->asic->asic_reset(rdev, true);
1679 pci_restore_state(dev->pdev);
1680 } else if (suspend) {
1681 /* Shut down the device */
1682 pci_disable_device(dev->pdev);
1683 pci_set_power_state(dev->pdev, PCI_D3hot);
1688 radeon_fbdev_set_suspend(rdev, 1);
1695 * radeon_resume_kms - initiate device resume
1697 * @pdev: drm dev pointer
1699 * Bring the hw back to operating state (all asics).
1700 * Returns 0 for success or an error on failure.
1701 * Called at driver resume.
1703 int radeon_resume_kms(struct drm_device *dev, bool resume, bool fbcon)
1705 struct drm_connector *connector;
1706 struct radeon_device *rdev = dev->dev_private;
1707 struct drm_crtc *crtc;
1710 if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
1717 pci_set_power_state(dev->pdev, PCI_D0);
1718 pci_restore_state(dev->pdev);
1719 if (pci_enable_device(dev->pdev)) {
1725 /* resume AGP if in use */
1726 radeon_agp_resume(rdev);
1727 radeon_resume(rdev);
1729 r = radeon_ib_ring_tests(rdev);
1731 DRM_ERROR("ib ring test failed (%d).\n", r);
1733 if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled) {
1734 /* do dpm late init */
1735 r = radeon_pm_late_init(rdev);
1737 rdev->pm.dpm_enabled = false;
1738 DRM_ERROR("radeon_pm_late_init failed, disabling dpm\n");
1741 /* resume old pm late */
1742 radeon_pm_resume(rdev);
1745 radeon_restore_bios_scratch_regs(rdev);
1748 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
1749 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
1751 if (radeon_crtc->cursor_bo) {
1752 struct radeon_bo *robj = gem_to_radeon_bo(radeon_crtc->cursor_bo);
1753 r = radeon_bo_reserve(robj, false);
1755 /* Only 27 bit offset for legacy cursor */
1756 r = radeon_bo_pin_restricted(robj,
1757 RADEON_GEM_DOMAIN_VRAM,
1758 ASIC_IS_AVIVO(rdev) ?
1760 &radeon_crtc->cursor_addr);
1762 DRM_ERROR("Failed to pin cursor BO (%d)\n", r);
1763 radeon_bo_unreserve(robj);
1768 /* init dig PHYs, disp eng pll */
1769 if (rdev->is_atom_bios) {
1770 radeon_atom_encoder_init(rdev);
1771 radeon_atom_disp_eng_pll_init(rdev);
1772 /* turn on the BL */
1773 if (rdev->mode_info.bl_encoder) {
1774 u8 bl_level = radeon_get_backlight_level(rdev,
1775 rdev->mode_info.bl_encoder);
1776 radeon_set_backlight_level(rdev, rdev->mode_info.bl_encoder,
1780 /* reset hpd state */
1781 radeon_hpd_init(rdev);
1782 /* blat the mode back in */
1784 drm_helper_resume_force_mode(dev);
1785 /* turn on display hw */
1786 drm_modeset_lock_all(dev);
1787 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1788 drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
1790 drm_modeset_unlock_all(dev);
1793 drm_kms_helper_poll_enable(dev);
1795 /* set the power state here in case we are a PX system or headless */
1796 if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled)
1797 radeon_pm_compute_clocks(rdev);
1800 radeon_fbdev_set_suspend(rdev, 0);
1808 * radeon_gpu_reset - reset the asic
1810 * @rdev: radeon device pointer
1812 * Attempt the reset the GPU if it has hung (all asics).
1813 * Returns 0 for success or an error on failure.
1815 int radeon_gpu_reset(struct radeon_device *rdev)
1817 unsigned ring_sizes[RADEON_NUM_RINGS];
1818 uint32_t *ring_data[RADEON_NUM_RINGS];
1825 down_write(&rdev->exclusive_lock);
1827 if (!rdev->needs_reset) {
1828 up_write(&rdev->exclusive_lock);
1832 atomic_inc(&rdev->gpu_reset_counter);
1834 radeon_save_bios_scratch_regs(rdev);
1836 resched = ttm_bo_lock_delayed_workqueue(&rdev->mman.bdev);
1837 radeon_suspend(rdev);
1838 radeon_hpd_fini(rdev);
1840 for (i = 0; i < RADEON_NUM_RINGS; ++i) {
1841 ring_sizes[i] = radeon_ring_backup(rdev, &rdev->ring[i],
1843 if (ring_sizes[i]) {
1845 dev_info(rdev->dev, "Saved %d dwords of commands "
1846 "on ring %d.\n", ring_sizes[i], i);
1850 r = radeon_asic_reset(rdev);
1852 dev_info(rdev->dev, "GPU reset succeeded, trying to resume\n");
1853 radeon_resume(rdev);
1856 radeon_restore_bios_scratch_regs(rdev);
1858 for (i = 0; i < RADEON_NUM_RINGS; ++i) {
1859 if (!r && ring_data[i]) {
1860 radeon_ring_restore(rdev, &rdev->ring[i],
1861 ring_sizes[i], ring_data[i]);
1863 radeon_fence_driver_force_completion(rdev, i);
1864 kfree(ring_data[i]);
1868 if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled) {
1869 /* do dpm late init */
1870 r = radeon_pm_late_init(rdev);
1872 rdev->pm.dpm_enabled = false;
1873 DRM_ERROR("radeon_pm_late_init failed, disabling dpm\n");
1876 /* resume old pm late */
1877 radeon_pm_resume(rdev);
1880 /* init dig PHYs, disp eng pll */
1881 if (rdev->is_atom_bios) {
1882 radeon_atom_encoder_init(rdev);
1883 radeon_atom_disp_eng_pll_init(rdev);
1884 /* turn on the BL */
1885 if (rdev->mode_info.bl_encoder) {
1886 u8 bl_level = radeon_get_backlight_level(rdev,
1887 rdev->mode_info.bl_encoder);
1888 radeon_set_backlight_level(rdev, rdev->mode_info.bl_encoder,
1892 /* reset hpd state */
1893 radeon_hpd_init(rdev);
1895 ttm_bo_unlock_delayed_workqueue(&rdev->mman.bdev, resched);
1897 rdev->in_reset = true;
1898 rdev->needs_reset = false;
1900 downgrade_write(&rdev->exclusive_lock);
1902 drm_helper_resume_force_mode(rdev->ddev);
1904 /* set the power state here in case we are a PX system or headless */
1905 if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled)
1906 radeon_pm_compute_clocks(rdev);
1909 r = radeon_ib_ring_tests(rdev);
1913 /* bad news, how to tell it to userspace ? */
1914 dev_info(rdev->dev, "GPU reset failed\n");
1917 rdev->needs_reset = r == -EAGAIN;
1918 rdev->in_reset = false;
1920 up_read(&rdev->exclusive_lock);
1928 int radeon_debugfs_add_files(struct radeon_device *rdev,
1929 struct drm_info_list *files,
1934 for (i = 0; i < rdev->debugfs_count; i++) {
1935 if (rdev->debugfs[i].files == files) {
1936 /* Already registered */
1941 i = rdev->debugfs_count + 1;
1942 if (i > RADEON_DEBUGFS_MAX_COMPONENTS) {
1943 DRM_ERROR("Reached maximum number of debugfs components.\n");
1944 DRM_ERROR("Report so we increase "
1945 "RADEON_DEBUGFS_MAX_COMPONENTS.\n");
1948 rdev->debugfs[rdev->debugfs_count].files = files;
1949 rdev->debugfs[rdev->debugfs_count].num_files = nfiles;
1950 rdev->debugfs_count = i;
1951 #if defined(CONFIG_DEBUG_FS)
1952 drm_debugfs_create_files(files, nfiles,
1953 rdev->ddev->control->debugfs_root,
1954 rdev->ddev->control);
1955 drm_debugfs_create_files(files, nfiles,
1956 rdev->ddev->primary->debugfs_root,
1957 rdev->ddev->primary);
1962 static void radeon_debugfs_remove_files(struct radeon_device *rdev)
1964 #if defined(CONFIG_DEBUG_FS)
1967 for (i = 0; i < rdev->debugfs_count; i++) {
1968 drm_debugfs_remove_files(rdev->debugfs[i].files,
1969 rdev->debugfs[i].num_files,
1970 rdev->ddev->control);
1971 drm_debugfs_remove_files(rdev->debugfs[i].files,
1972 rdev->debugfs[i].num_files,
1973 rdev->ddev->primary);