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/vgaarb.h>
34 #include <linux/vga_switcheroo.h>
35 #include <linux/efi.h>
36 #include "radeon_reg.h"
40 static const char radeon_family_name[][16] = {
102 * radeon_program_register_sequence - program an array of registers.
104 * @rdev: radeon_device pointer
105 * @registers: pointer to the register array
106 * @array_size: size of the register array
108 * Programs an array or registers with and and or masks.
109 * This is a helper for setting golden registers.
111 void radeon_program_register_sequence(struct radeon_device *rdev,
112 const u32 *registers,
113 const u32 array_size)
115 u32 tmp, reg, and_mask, or_mask;
121 for (i = 0; i < array_size; i +=3) {
122 reg = registers[i + 0];
123 and_mask = registers[i + 1];
124 or_mask = registers[i + 2];
126 if (and_mask == 0xffffffff) {
138 * radeon_surface_init - Clear GPU surface registers.
140 * @rdev: radeon_device pointer
142 * Clear GPU surface registers (r1xx-r5xx).
144 void radeon_surface_init(struct radeon_device *rdev)
146 /* FIXME: check this out */
147 if (rdev->family < CHIP_R600) {
150 for (i = 0; i < RADEON_GEM_MAX_SURFACES; i++) {
151 if (rdev->surface_regs[i].bo)
152 radeon_bo_get_surface_reg(rdev->surface_regs[i].bo);
154 radeon_clear_surface_reg(rdev, i);
156 /* enable surfaces */
157 WREG32(RADEON_SURFACE_CNTL, 0);
162 * GPU scratch registers helpers function.
165 * radeon_scratch_init - Init scratch register driver information.
167 * @rdev: radeon_device pointer
169 * Init CP scratch register driver information (r1xx-r5xx)
171 void radeon_scratch_init(struct radeon_device *rdev)
175 /* FIXME: check this out */
176 if (rdev->family < CHIP_R300) {
177 rdev->scratch.num_reg = 5;
179 rdev->scratch.num_reg = 7;
181 rdev->scratch.reg_base = RADEON_SCRATCH_REG0;
182 for (i = 0; i < rdev->scratch.num_reg; i++) {
183 rdev->scratch.free[i] = true;
184 rdev->scratch.reg[i] = rdev->scratch.reg_base + (i * 4);
189 * radeon_scratch_get - Allocate a scratch register
191 * @rdev: radeon_device pointer
192 * @reg: scratch register mmio offset
194 * Allocate a CP scratch register for use by the driver (all asics).
195 * Returns 0 on success or -EINVAL on failure.
197 int radeon_scratch_get(struct radeon_device *rdev, uint32_t *reg)
201 for (i = 0; i < rdev->scratch.num_reg; i++) {
202 if (rdev->scratch.free[i]) {
203 rdev->scratch.free[i] = false;
204 *reg = rdev->scratch.reg[i];
212 * radeon_scratch_free - Free a scratch register
214 * @rdev: radeon_device pointer
215 * @reg: scratch register mmio offset
217 * Free a CP scratch register allocated for use by the driver (all asics)
219 void radeon_scratch_free(struct radeon_device *rdev, uint32_t reg)
223 for (i = 0; i < rdev->scratch.num_reg; i++) {
224 if (rdev->scratch.reg[i] == reg) {
225 rdev->scratch.free[i] = true;
233 * Writeback is the the method by which the the GPU updates special pages
234 * in memory with the status of certain GPU events (fences, ring pointers,
239 * radeon_wb_disable - Disable Writeback
241 * @rdev: radeon_device pointer
243 * Disables Writeback (all asics). Used for suspend.
245 void radeon_wb_disable(struct radeon_device *rdev)
249 if (rdev->wb.wb_obj) {
250 r = radeon_bo_reserve(rdev->wb.wb_obj, false);
251 if (unlikely(r != 0))
253 radeon_bo_kunmap(rdev->wb.wb_obj);
254 radeon_bo_unpin(rdev->wb.wb_obj);
255 radeon_bo_unreserve(rdev->wb.wb_obj);
257 rdev->wb.enabled = false;
261 * radeon_wb_fini - Disable Writeback and free memory
263 * @rdev: radeon_device pointer
265 * Disables Writeback and frees the Writeback memory (all asics).
266 * Used at driver shutdown.
268 void radeon_wb_fini(struct radeon_device *rdev)
270 radeon_wb_disable(rdev);
271 if (rdev->wb.wb_obj) {
272 radeon_bo_unref(&rdev->wb.wb_obj);
274 rdev->wb.wb_obj = NULL;
279 * radeon_wb_init- Init Writeback driver info and allocate memory
281 * @rdev: radeon_device pointer
283 * Disables Writeback and frees the Writeback memory (all asics).
284 * Used at driver startup.
285 * Returns 0 on success or an -error on failure.
287 int radeon_wb_init(struct radeon_device *rdev)
291 if (rdev->wb.wb_obj == NULL) {
292 r = radeon_bo_create(rdev, RADEON_GPU_PAGE_SIZE, PAGE_SIZE, true,
293 RADEON_GEM_DOMAIN_GTT, NULL, &rdev->wb.wb_obj);
295 dev_warn(rdev->dev, "(%d) create WB bo failed\n", r);
299 r = radeon_bo_reserve(rdev->wb.wb_obj, false);
300 if (unlikely(r != 0)) {
301 radeon_wb_fini(rdev);
304 r = radeon_bo_pin(rdev->wb.wb_obj, RADEON_GEM_DOMAIN_GTT,
307 radeon_bo_unreserve(rdev->wb.wb_obj);
308 dev_warn(rdev->dev, "(%d) pin WB bo failed\n", r);
309 radeon_wb_fini(rdev);
312 r = radeon_bo_kmap(rdev->wb.wb_obj, (void **)&rdev->wb.wb);
313 radeon_bo_unreserve(rdev->wb.wb_obj);
315 dev_warn(rdev->dev, "(%d) map WB bo failed\n", r);
316 radeon_wb_fini(rdev);
320 /* clear wb memory */
321 memset((char *)rdev->wb.wb, 0, RADEON_GPU_PAGE_SIZE);
322 /* disable event_write fences */
323 rdev->wb.use_event = false;
324 /* disabled via module param */
325 if (radeon_no_wb == 1) {
326 rdev->wb.enabled = false;
328 if (rdev->flags & RADEON_IS_AGP) {
329 /* often unreliable on AGP */
330 rdev->wb.enabled = false;
331 } else if (rdev->family < CHIP_R300) {
332 /* often unreliable on pre-r300 */
333 rdev->wb.enabled = false;
335 rdev->wb.enabled = true;
336 /* event_write fences are only available on r600+ */
337 if (rdev->family >= CHIP_R600) {
338 rdev->wb.use_event = true;
342 /* always use writeback/events on NI, APUs */
343 if (rdev->family >= CHIP_PALM) {
344 rdev->wb.enabled = true;
345 rdev->wb.use_event = true;
348 dev_info(rdev->dev, "WB %sabled\n", rdev->wb.enabled ? "en" : "dis");
354 * radeon_vram_location - try to find VRAM location
355 * @rdev: radeon device structure holding all necessary informations
356 * @mc: memory controller structure holding memory informations
357 * @base: base address at which to put VRAM
359 * Function will place try to place VRAM at base address provided
360 * as parameter (which is so far either PCI aperture address or
361 * for IGP TOM base address).
363 * If there is not enough space to fit the unvisible VRAM in the 32bits
364 * address space then we limit the VRAM size to the aperture.
366 * If we are using AGP and if the AGP aperture doesn't allow us to have
367 * room for all the VRAM than we restrict the VRAM to the PCI aperture
368 * size and print a warning.
370 * This function will never fails, worst case are limiting VRAM.
372 * Note: GTT start, end, size should be initialized before calling this
373 * function on AGP platform.
375 * Note: We don't explicitly enforce VRAM start to be aligned on VRAM size,
376 * this shouldn't be a problem as we are using the PCI aperture as a reference.
377 * Otherwise this would be needed for rv280, all r3xx, and all r4xx, but
380 * Note: we use mc_vram_size as on some board we need to program the mc to
381 * cover the whole aperture even if VRAM size is inferior to aperture size
382 * Novell bug 204882 + along with lots of ubuntu ones
384 * Note: when limiting vram it's safe to overwritte real_vram_size because
385 * we are not in case where real_vram_size is inferior to mc_vram_size (ie
386 * note afected by bogus hw of Novell bug 204882 + along with lots of ubuntu
389 * Note: IGP TOM addr should be the same as the aperture addr, we don't
390 * explicitly check for that thought.
392 * FIXME: when reducing VRAM size align new size on power of 2.
394 void radeon_vram_location(struct radeon_device *rdev, struct radeon_mc *mc, u64 base)
396 uint64_t limit = (uint64_t)radeon_vram_limit << 20;
398 mc->vram_start = base;
399 if (mc->mc_vram_size > (rdev->mc.mc_mask - base + 1)) {
400 dev_warn(rdev->dev, "limiting VRAM to PCI aperture size\n");
401 mc->real_vram_size = mc->aper_size;
402 mc->mc_vram_size = mc->aper_size;
404 mc->vram_end = mc->vram_start + mc->mc_vram_size - 1;
405 if (rdev->flags & RADEON_IS_AGP && mc->vram_end > mc->gtt_start && mc->vram_start <= mc->gtt_end) {
406 dev_warn(rdev->dev, "limiting VRAM to PCI aperture size\n");
407 mc->real_vram_size = mc->aper_size;
408 mc->mc_vram_size = mc->aper_size;
410 mc->vram_end = mc->vram_start + mc->mc_vram_size - 1;
411 if (limit && limit < mc->real_vram_size)
412 mc->real_vram_size = limit;
413 dev_info(rdev->dev, "VRAM: %lluM 0x%016llX - 0x%016llX (%lluM used)\n",
414 mc->mc_vram_size >> 20, mc->vram_start,
415 mc->vram_end, mc->real_vram_size >> 20);
419 * radeon_gtt_location - try to find GTT location
420 * @rdev: radeon device structure holding all necessary informations
421 * @mc: memory controller structure holding memory informations
423 * Function will place try to place GTT before or after VRAM.
425 * If GTT size is bigger than space left then we ajust GTT size.
426 * Thus function will never fails.
428 * FIXME: when reducing GTT size align new size on power of 2.
430 void radeon_gtt_location(struct radeon_device *rdev, struct radeon_mc *mc)
432 u64 size_af, size_bf;
434 size_af = ((rdev->mc.mc_mask - mc->vram_end) + mc->gtt_base_align) & ~mc->gtt_base_align;
435 size_bf = mc->vram_start & ~mc->gtt_base_align;
436 if (size_bf > size_af) {
437 if (mc->gtt_size > size_bf) {
438 dev_warn(rdev->dev, "limiting GTT\n");
439 mc->gtt_size = size_bf;
441 mc->gtt_start = (mc->vram_start & ~mc->gtt_base_align) - mc->gtt_size;
443 if (mc->gtt_size > size_af) {
444 dev_warn(rdev->dev, "limiting GTT\n");
445 mc->gtt_size = size_af;
447 mc->gtt_start = (mc->vram_end + 1 + mc->gtt_base_align) & ~mc->gtt_base_align;
449 mc->gtt_end = mc->gtt_start + mc->gtt_size - 1;
450 dev_info(rdev->dev, "GTT: %lluM 0x%016llX - 0x%016llX\n",
451 mc->gtt_size >> 20, mc->gtt_start, mc->gtt_end);
455 * GPU helpers function.
458 * radeon_card_posted - check if the hw has already been initialized
460 * @rdev: radeon_device pointer
462 * Check if the asic has been initialized (all asics).
463 * Used at driver startup.
464 * Returns true if initialized or false if not.
466 bool radeon_card_posted(struct radeon_device *rdev)
470 /* required for EFI mode on macbook2,1 which uses an r5xx asic */
471 if (efi_enabled(EFI_BOOT) &&
472 (rdev->pdev->subsystem_vendor == PCI_VENDOR_ID_APPLE) &&
473 (rdev->family < CHIP_R600))
476 if (ASIC_IS_NODCE(rdev))
479 /* first check CRTCs */
480 if (ASIC_IS_DCE4(rdev)) {
481 reg = RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC0_REGISTER_OFFSET) |
482 RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC1_REGISTER_OFFSET);
483 if (rdev->num_crtc >= 4) {
484 reg |= RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC2_REGISTER_OFFSET) |
485 RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC3_REGISTER_OFFSET);
487 if (rdev->num_crtc >= 6) {
488 reg |= RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC4_REGISTER_OFFSET) |
489 RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC5_REGISTER_OFFSET);
491 if (reg & EVERGREEN_CRTC_MASTER_EN)
493 } else if (ASIC_IS_AVIVO(rdev)) {
494 reg = RREG32(AVIVO_D1CRTC_CONTROL) |
495 RREG32(AVIVO_D2CRTC_CONTROL);
496 if (reg & AVIVO_CRTC_EN) {
500 reg = RREG32(RADEON_CRTC_GEN_CNTL) |
501 RREG32(RADEON_CRTC2_GEN_CNTL);
502 if (reg & RADEON_CRTC_EN) {
508 /* then check MEM_SIZE, in case the crtcs are off */
509 if (rdev->family >= CHIP_R600)
510 reg = RREG32(R600_CONFIG_MEMSIZE);
512 reg = RREG32(RADEON_CONFIG_MEMSIZE);
522 * radeon_update_bandwidth_info - update display bandwidth params
524 * @rdev: radeon_device pointer
526 * Used when sclk/mclk are switched or display modes are set.
527 * params are used to calculate display watermarks (all asics)
529 void radeon_update_bandwidth_info(struct radeon_device *rdev)
532 u32 sclk = rdev->pm.current_sclk;
533 u32 mclk = rdev->pm.current_mclk;
535 /* sclk/mclk in Mhz */
536 a.full = dfixed_const(100);
537 rdev->pm.sclk.full = dfixed_const(sclk);
538 rdev->pm.sclk.full = dfixed_div(rdev->pm.sclk, a);
539 rdev->pm.mclk.full = dfixed_const(mclk);
540 rdev->pm.mclk.full = dfixed_div(rdev->pm.mclk, a);
542 if (rdev->flags & RADEON_IS_IGP) {
543 a.full = dfixed_const(16);
544 /* core_bandwidth = sclk(Mhz) * 16 */
545 rdev->pm.core_bandwidth.full = dfixed_div(rdev->pm.sclk, a);
550 * radeon_boot_test_post_card - check and possibly initialize the hw
552 * @rdev: radeon_device pointer
554 * Check if the asic is initialized and if not, attempt to initialize
556 * Returns true if initialized or false if not.
558 bool radeon_boot_test_post_card(struct radeon_device *rdev)
560 if (radeon_card_posted(rdev))
564 DRM_INFO("GPU not posted. posting now...\n");
565 if (rdev->is_atom_bios)
566 atom_asic_init(rdev->mode_info.atom_context);
568 radeon_combios_asic_init(rdev->ddev);
571 dev_err(rdev->dev, "Card not posted and no BIOS - ignoring\n");
577 * radeon_dummy_page_init - init dummy page used by the driver
579 * @rdev: radeon_device pointer
581 * Allocate the dummy page used by the driver (all asics).
582 * This dummy page is used by the driver as a filler for gart entries
583 * when pages are taken out of the GART
584 * Returns 0 on sucess, -ENOMEM on failure.
586 int radeon_dummy_page_init(struct radeon_device *rdev)
588 if (rdev->dummy_page.page)
590 rdev->dummy_page.page = alloc_page(GFP_DMA32 | GFP_KERNEL | __GFP_ZERO);
591 if (rdev->dummy_page.page == NULL)
593 rdev->dummy_page.addr = pci_map_page(rdev->pdev, rdev->dummy_page.page,
594 0, PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
595 if (pci_dma_mapping_error(rdev->pdev, rdev->dummy_page.addr)) {
596 dev_err(&rdev->pdev->dev, "Failed to DMA MAP the dummy page\n");
597 __free_page(rdev->dummy_page.page);
598 rdev->dummy_page.page = NULL;
605 * radeon_dummy_page_fini - free dummy page used by the driver
607 * @rdev: radeon_device pointer
609 * Frees the dummy page used by the driver (all asics).
611 void radeon_dummy_page_fini(struct radeon_device *rdev)
613 if (rdev->dummy_page.page == NULL)
615 pci_unmap_page(rdev->pdev, rdev->dummy_page.addr,
616 PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
617 __free_page(rdev->dummy_page.page);
618 rdev->dummy_page.page = NULL;
622 /* ATOM accessor methods */
624 * ATOM is an interpreted byte code stored in tables in the vbios. The
625 * driver registers callbacks to access registers and the interpreter
626 * in the driver parses the tables and executes then to program specific
627 * actions (set display modes, asic init, etc.). See radeon_atombios.c,
628 * atombios.h, and atom.c
632 * cail_pll_read - read PLL register
634 * @info: atom card_info pointer
635 * @reg: PLL register offset
637 * Provides a PLL register accessor for the atom interpreter (r4xx+).
638 * Returns the value of the PLL register.
640 static uint32_t cail_pll_read(struct card_info *info, uint32_t reg)
642 struct radeon_device *rdev = info->dev->dev_private;
645 r = rdev->pll_rreg(rdev, reg);
650 * cail_pll_write - write PLL register
652 * @info: atom card_info pointer
653 * @reg: PLL register offset
654 * @val: value to write to the pll register
656 * Provides a PLL register accessor for the atom interpreter (r4xx+).
658 static void cail_pll_write(struct card_info *info, uint32_t reg, uint32_t val)
660 struct radeon_device *rdev = info->dev->dev_private;
662 rdev->pll_wreg(rdev, reg, val);
666 * cail_mc_read - read MC (Memory Controller) register
668 * @info: atom card_info pointer
669 * @reg: MC register offset
671 * Provides an MC register accessor for the atom interpreter (r4xx+).
672 * Returns the value of the MC register.
674 static uint32_t cail_mc_read(struct card_info *info, uint32_t reg)
676 struct radeon_device *rdev = info->dev->dev_private;
679 r = rdev->mc_rreg(rdev, reg);
684 * cail_mc_write - write MC (Memory Controller) register
686 * @info: atom card_info pointer
687 * @reg: MC register offset
688 * @val: value to write to the pll register
690 * Provides a MC register accessor for the atom interpreter (r4xx+).
692 static void cail_mc_write(struct card_info *info, uint32_t reg, uint32_t val)
694 struct radeon_device *rdev = info->dev->dev_private;
696 rdev->mc_wreg(rdev, reg, val);
700 * cail_reg_write - write MMIO register
702 * @info: atom card_info pointer
703 * @reg: MMIO register offset
704 * @val: value to write to the pll register
706 * Provides a MMIO register accessor for the atom interpreter (r4xx+).
708 static void cail_reg_write(struct card_info *info, uint32_t reg, uint32_t val)
710 struct radeon_device *rdev = info->dev->dev_private;
716 * cail_reg_read - read MMIO register
718 * @info: atom card_info pointer
719 * @reg: MMIO register offset
721 * Provides an MMIO register accessor for the atom interpreter (r4xx+).
722 * Returns the value of the MMIO register.
724 static uint32_t cail_reg_read(struct card_info *info, uint32_t reg)
726 struct radeon_device *rdev = info->dev->dev_private;
734 * cail_ioreg_write - write IO register
736 * @info: atom card_info pointer
737 * @reg: IO register offset
738 * @val: value to write to the pll register
740 * Provides a IO register accessor for the atom interpreter (r4xx+).
742 static void cail_ioreg_write(struct card_info *info, uint32_t reg, uint32_t val)
744 struct radeon_device *rdev = info->dev->dev_private;
746 WREG32_IO(reg*4, val);
750 * cail_ioreg_read - read IO register
752 * @info: atom card_info pointer
753 * @reg: IO register offset
755 * Provides an IO register accessor for the atom interpreter (r4xx+).
756 * Returns the value of the IO register.
758 static uint32_t cail_ioreg_read(struct card_info *info, uint32_t reg)
760 struct radeon_device *rdev = info->dev->dev_private;
763 r = RREG32_IO(reg*4);
768 * radeon_atombios_init - init the driver info and callbacks for atombios
770 * @rdev: radeon_device pointer
772 * Initializes the driver info and register access callbacks for the
773 * ATOM interpreter (r4xx+).
774 * Returns 0 on sucess, -ENOMEM on failure.
775 * Called at driver startup.
777 int radeon_atombios_init(struct radeon_device *rdev)
779 struct card_info *atom_card_info =
780 kzalloc(sizeof(struct card_info), GFP_KERNEL);
785 rdev->mode_info.atom_card_info = atom_card_info;
786 atom_card_info->dev = rdev->ddev;
787 atom_card_info->reg_read = cail_reg_read;
788 atom_card_info->reg_write = cail_reg_write;
789 /* needed for iio ops */
791 atom_card_info->ioreg_read = cail_ioreg_read;
792 atom_card_info->ioreg_write = cail_ioreg_write;
794 DRM_ERROR("Unable to find PCI I/O BAR; using MMIO for ATOM IIO\n");
795 atom_card_info->ioreg_read = cail_reg_read;
796 atom_card_info->ioreg_write = cail_reg_write;
798 atom_card_info->mc_read = cail_mc_read;
799 atom_card_info->mc_write = cail_mc_write;
800 atom_card_info->pll_read = cail_pll_read;
801 atom_card_info->pll_write = cail_pll_write;
803 rdev->mode_info.atom_context = atom_parse(atom_card_info, rdev->bios);
804 if (!rdev->mode_info.atom_context) {
805 radeon_atombios_fini(rdev);
809 mutex_init(&rdev->mode_info.atom_context->mutex);
810 radeon_atom_initialize_bios_scratch_regs(rdev->ddev);
811 atom_allocate_fb_scratch(rdev->mode_info.atom_context);
816 * radeon_atombios_fini - free the driver info and callbacks for atombios
818 * @rdev: radeon_device pointer
820 * Frees the driver info and register access callbacks for the ATOM
821 * interpreter (r4xx+).
822 * Called at driver shutdown.
824 void radeon_atombios_fini(struct radeon_device *rdev)
826 if (rdev->mode_info.atom_context) {
827 kfree(rdev->mode_info.atom_context->scratch);
829 kfree(rdev->mode_info.atom_context);
830 rdev->mode_info.atom_context = NULL;
831 kfree(rdev->mode_info.atom_card_info);
832 rdev->mode_info.atom_card_info = NULL;
837 * COMBIOS is the bios format prior to ATOM. It provides
838 * command tables similar to ATOM, but doesn't have a unified
839 * parser. See radeon_combios.c
843 * radeon_combios_init - init the driver info for combios
845 * @rdev: radeon_device pointer
847 * Initializes the driver info for combios (r1xx-r3xx).
848 * Returns 0 on sucess.
849 * Called at driver startup.
851 int radeon_combios_init(struct radeon_device *rdev)
853 radeon_combios_initialize_bios_scratch_regs(rdev->ddev);
858 * radeon_combios_fini - free the driver info for combios
860 * @rdev: radeon_device pointer
862 * Frees the driver info for combios (r1xx-r3xx).
863 * Called at driver shutdown.
865 void radeon_combios_fini(struct radeon_device *rdev)
869 /* if we get transitioned to only one device, take VGA back */
871 * radeon_vga_set_decode - enable/disable vga decode
873 * @cookie: radeon_device pointer
874 * @state: enable/disable vga decode
876 * Enable/disable vga decode (all asics).
877 * Returns VGA resource flags.
879 static unsigned int radeon_vga_set_decode(void *cookie, bool state)
881 struct radeon_device *rdev = cookie;
882 radeon_vga_set_state(rdev, state);
884 return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
885 VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
887 return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
891 * radeon_check_pot_argument - check that argument is a power of two
893 * @arg: value to check
895 * Validates that a certain argument is a power of two (all asics).
896 * Returns true if argument is valid.
898 static bool radeon_check_pot_argument(int arg)
900 return (arg & (arg - 1)) == 0;
904 * radeon_check_arguments - validate module params
906 * @rdev: radeon_device pointer
908 * Validates certain module parameters and updates
909 * the associated values used by the driver (all asics).
911 static void radeon_check_arguments(struct radeon_device *rdev)
913 /* vramlimit must be a power of two */
914 if (!radeon_check_pot_argument(radeon_vram_limit)) {
915 dev_warn(rdev->dev, "vram limit (%d) must be a power of 2\n",
917 radeon_vram_limit = 0;
920 /* gtt size must be power of two and greater or equal to 32M */
921 if (radeon_gart_size < 32) {
922 dev_warn(rdev->dev, "gart size (%d) too small forcing to 512M\n",
924 radeon_gart_size = 512;
926 } else if (!radeon_check_pot_argument(radeon_gart_size)) {
927 dev_warn(rdev->dev, "gart size (%d) must be a power of 2\n",
929 radeon_gart_size = 512;
931 rdev->mc.gtt_size = (uint64_t)radeon_gart_size << 20;
933 /* AGP mode can only be -1, 1, 2, 4, 8 */
934 switch (radeon_agpmode) {
943 dev_warn(rdev->dev, "invalid AGP mode %d (valid mode: "
944 "-1, 0, 1, 2, 4, 8)\n", radeon_agpmode);
951 * radeon_switcheroo_quirk_long_wakeup - return true if longer d3 delay is
952 * needed for waking up.
954 * @pdev: pci dev pointer
956 static bool radeon_switcheroo_quirk_long_wakeup(struct pci_dev *pdev)
959 /* 6600m in a macbook pro */
960 if (pdev->subsystem_vendor == PCI_VENDOR_ID_APPLE &&
961 pdev->subsystem_device == 0x00e2) {
962 printk(KERN_INFO "radeon: quirking longer d3 wakeup delay\n");
970 * radeon_switcheroo_set_state - set switcheroo state
972 * @pdev: pci dev pointer
973 * @state: vga switcheroo state
975 * Callback for the switcheroo driver. Suspends or resumes the
976 * the asics before or after it is powered up using ACPI methods.
978 static void radeon_switcheroo_set_state(struct pci_dev *pdev, enum vga_switcheroo_state state)
980 struct drm_device *dev = pci_get_drvdata(pdev);
981 pm_message_t pmm = { .event = PM_EVENT_SUSPEND };
982 if (state == VGA_SWITCHEROO_ON) {
983 unsigned d3_delay = dev->pdev->d3_delay;
985 printk(KERN_INFO "radeon: switched on\n");
986 /* don't suspend or resume card normally */
987 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
989 if (d3_delay < 20 && radeon_switcheroo_quirk_long_wakeup(pdev))
990 dev->pdev->d3_delay = 20;
992 radeon_resume_kms(dev);
994 dev->pdev->d3_delay = d3_delay;
996 dev->switch_power_state = DRM_SWITCH_POWER_ON;
997 drm_kms_helper_poll_enable(dev);
999 printk(KERN_INFO "radeon: switched off\n");
1000 drm_kms_helper_poll_disable(dev);
1001 dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
1002 radeon_suspend_kms(dev, pmm);
1003 dev->switch_power_state = DRM_SWITCH_POWER_OFF;
1008 * radeon_switcheroo_can_switch - see if switcheroo state can change
1010 * @pdev: pci dev pointer
1012 * Callback for the switcheroo driver. Check of the switcheroo
1013 * state can be changed.
1014 * Returns true if the state can be changed, false if not.
1016 static bool radeon_switcheroo_can_switch(struct pci_dev *pdev)
1018 struct drm_device *dev = pci_get_drvdata(pdev);
1021 spin_lock(&dev->count_lock);
1022 can_switch = (dev->open_count == 0);
1023 spin_unlock(&dev->count_lock);
1027 static const struct vga_switcheroo_client_ops radeon_switcheroo_ops = {
1028 .set_gpu_state = radeon_switcheroo_set_state,
1030 .can_switch = radeon_switcheroo_can_switch,
1034 * radeon_device_init - initialize the driver
1036 * @rdev: radeon_device pointer
1037 * @pdev: drm dev pointer
1038 * @pdev: pci dev pointer
1039 * @flags: driver flags
1041 * Initializes the driver info and hw (all asics).
1042 * Returns 0 for success or an error on failure.
1043 * Called at driver startup.
1045 int radeon_device_init(struct radeon_device *rdev,
1046 struct drm_device *ddev,
1047 struct pci_dev *pdev,
1053 rdev->shutdown = false;
1054 rdev->dev = &pdev->dev;
1057 rdev->flags = flags;
1058 rdev->family = flags & RADEON_FAMILY_MASK;
1059 rdev->is_atom_bios = false;
1060 rdev->usec_timeout = RADEON_MAX_USEC_TIMEOUT;
1061 rdev->mc.gtt_size = radeon_gart_size * 1024 * 1024;
1062 rdev->accel_working = false;
1063 /* set up ring ids */
1064 for (i = 0; i < RADEON_NUM_RINGS; i++) {
1065 rdev->ring[i].idx = i;
1068 DRM_INFO("initializing kernel modesetting (%s 0x%04X:0x%04X 0x%04X:0x%04X).\n",
1069 radeon_family_name[rdev->family], pdev->vendor, pdev->device,
1070 pdev->subsystem_vendor, pdev->subsystem_device);
1072 /* mutex initialization are all done here so we
1073 * can recall function without having locking issues */
1074 mutex_init(&rdev->ring_lock);
1075 mutex_init(&rdev->dc_hw_i2c_mutex);
1076 atomic_set(&rdev->ih.lock, 0);
1077 mutex_init(&rdev->gem.mutex);
1078 mutex_init(&rdev->pm.mutex);
1079 mutex_init(&rdev->gpu_clock_mutex);
1080 init_rwsem(&rdev->pm.mclk_lock);
1081 init_rwsem(&rdev->exclusive_lock);
1082 init_waitqueue_head(&rdev->irq.vblank_queue);
1083 r = radeon_gem_init(rdev);
1086 /* initialize vm here */
1087 mutex_init(&rdev->vm_manager.lock);
1088 /* Adjust VM size here.
1089 * Currently set to 4GB ((1 << 20) 4k pages).
1090 * Max GPUVM size for cayman and SI is 40 bits.
1092 rdev->vm_manager.max_pfn = 1 << 20;
1093 INIT_LIST_HEAD(&rdev->vm_manager.lru_vm);
1095 /* Set asic functions */
1096 r = radeon_asic_init(rdev);
1099 radeon_check_arguments(rdev);
1101 /* all of the newer IGP chips have an internal gart
1102 * However some rs4xx report as AGP, so remove that here.
1104 if ((rdev->family >= CHIP_RS400) &&
1105 (rdev->flags & RADEON_IS_IGP)) {
1106 rdev->flags &= ~RADEON_IS_AGP;
1109 if (rdev->flags & RADEON_IS_AGP && radeon_agpmode == -1) {
1110 radeon_agp_disable(rdev);
1113 /* Set the internal MC address mask
1114 * This is the max address of the GPU's
1115 * internal address space.
1117 if (rdev->family >= CHIP_CAYMAN)
1118 rdev->mc.mc_mask = 0xffffffffffULL; /* 40 bit MC */
1119 else if (rdev->family >= CHIP_CEDAR)
1120 rdev->mc.mc_mask = 0xfffffffffULL; /* 36 bit MC */
1122 rdev->mc.mc_mask = 0xffffffffULL; /* 32 bit MC */
1124 /* set DMA mask + need_dma32 flags.
1125 * PCIE - can handle 40-bits.
1126 * IGP - can handle 40-bits
1127 * AGP - generally dma32 is safest
1128 * PCI - dma32 for legacy pci gart, 40 bits on newer asics
1130 rdev->need_dma32 = false;
1131 if (rdev->flags & RADEON_IS_AGP)
1132 rdev->need_dma32 = true;
1133 if ((rdev->flags & RADEON_IS_PCI) &&
1134 (rdev->family <= CHIP_RS740))
1135 rdev->need_dma32 = true;
1137 dma_bits = rdev->need_dma32 ? 32 : 40;
1138 r = pci_set_dma_mask(rdev->pdev, DMA_BIT_MASK(dma_bits));
1140 rdev->need_dma32 = true;
1142 printk(KERN_WARNING "radeon: No suitable DMA available.\n");
1144 r = pci_set_consistent_dma_mask(rdev->pdev, DMA_BIT_MASK(dma_bits));
1146 pci_set_consistent_dma_mask(rdev->pdev, DMA_BIT_MASK(32));
1147 printk(KERN_WARNING "radeon: No coherent DMA available.\n");
1150 /* Registers mapping */
1151 /* TODO: block userspace mapping of io register */
1152 spin_lock_init(&rdev->mmio_idx_lock);
1153 rdev->rmmio_base = pci_resource_start(rdev->pdev, 2);
1154 rdev->rmmio_size = pci_resource_len(rdev->pdev, 2);
1155 rdev->rmmio = ioremap(rdev->rmmio_base, rdev->rmmio_size);
1156 if (rdev->rmmio == NULL) {
1159 DRM_INFO("register mmio base: 0x%08X\n", (uint32_t)rdev->rmmio_base);
1160 DRM_INFO("register mmio size: %u\n", (unsigned)rdev->rmmio_size);
1162 /* io port mapping */
1163 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
1164 if (pci_resource_flags(rdev->pdev, i) & IORESOURCE_IO) {
1165 rdev->rio_mem_size = pci_resource_len(rdev->pdev, i);
1166 rdev->rio_mem = pci_iomap(rdev->pdev, i, rdev->rio_mem_size);
1170 if (rdev->rio_mem == NULL)
1171 DRM_ERROR("Unable to find PCI I/O BAR\n");
1173 /* if we have > 1 VGA cards, then disable the radeon VGA resources */
1174 /* this will fail for cards that aren't VGA class devices, just
1176 vga_client_register(rdev->pdev, rdev, NULL, radeon_vga_set_decode);
1177 vga_switcheroo_register_client(rdev->pdev, &radeon_switcheroo_ops);
1179 r = radeon_init(rdev);
1183 r = radeon_ib_ring_tests(rdev);
1185 DRM_ERROR("ib ring test failed (%d).\n", r);
1187 r = radeon_gem_debugfs_init(rdev);
1189 DRM_ERROR("registering gem debugfs failed (%d).\n", r);
1192 if (rdev->flags & RADEON_IS_AGP && !rdev->accel_working) {
1193 /* Acceleration not working on AGP card try again
1194 * with fallback to PCI or PCIE GART
1196 radeon_asic_reset(rdev);
1198 radeon_agp_disable(rdev);
1199 r = radeon_init(rdev);
1203 if ((radeon_testing & 1)) {
1204 radeon_test_moves(rdev);
1206 if ((radeon_testing & 2)) {
1207 radeon_test_syncing(rdev);
1209 if (radeon_benchmarking) {
1210 radeon_benchmark(rdev, radeon_benchmarking);
1215 static void radeon_debugfs_remove_files(struct radeon_device *rdev);
1218 * radeon_device_fini - tear down the driver
1220 * @rdev: radeon_device pointer
1222 * Tear down the driver info (all asics).
1223 * Called at driver shutdown.
1225 void radeon_device_fini(struct radeon_device *rdev)
1227 DRM_INFO("radeon: finishing device.\n");
1228 rdev->shutdown = true;
1229 /* evict vram memory */
1230 radeon_bo_evict_vram(rdev);
1232 vga_switcheroo_unregister_client(rdev->pdev);
1233 vga_client_register(rdev->pdev, NULL, NULL, NULL);
1235 pci_iounmap(rdev->pdev, rdev->rio_mem);
1236 rdev->rio_mem = NULL;
1237 iounmap(rdev->rmmio);
1239 radeon_debugfs_remove_files(rdev);
1247 * radeon_suspend_kms - initiate device suspend
1249 * @pdev: drm dev pointer
1250 * @state: suspend state
1252 * Puts the hw in the suspend state (all asics).
1253 * Returns 0 for success or an error on failure.
1254 * Called at driver suspend.
1256 int radeon_suspend_kms(struct drm_device *dev, pm_message_t state)
1258 struct radeon_device *rdev;
1259 struct drm_crtc *crtc;
1260 struct drm_connector *connector;
1262 bool force_completion = false;
1264 if (dev == NULL || dev->dev_private == NULL) {
1267 if (state.event == PM_EVENT_PRETHAW) {
1270 rdev = dev->dev_private;
1272 if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
1275 drm_kms_helper_poll_disable(dev);
1277 /* turn off display hw */
1278 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1279 drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
1282 /* unpin the front buffers */
1283 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
1284 struct radeon_framebuffer *rfb = to_radeon_framebuffer(crtc->fb);
1285 struct radeon_bo *robj;
1287 if (rfb == NULL || rfb->obj == NULL) {
1290 robj = gem_to_radeon_bo(rfb->obj);
1291 /* don't unpin kernel fb objects */
1292 if (!radeon_fbdev_robj_is_fb(rdev, robj)) {
1293 r = radeon_bo_reserve(robj, false);
1295 radeon_bo_unpin(robj);
1296 radeon_bo_unreserve(robj);
1300 /* evict vram memory */
1301 radeon_bo_evict_vram(rdev);
1303 mutex_lock(&rdev->ring_lock);
1304 /* wait for gpu to finish processing current batch */
1305 for (i = 0; i < RADEON_NUM_RINGS; i++) {
1306 r = radeon_fence_wait_empty_locked(rdev, i);
1308 /* delay GPU reset to resume */
1309 force_completion = true;
1312 if (force_completion) {
1313 radeon_fence_driver_force_completion(rdev);
1315 mutex_unlock(&rdev->ring_lock);
1317 radeon_save_bios_scratch_regs(rdev);
1319 radeon_pm_suspend(rdev);
1320 radeon_suspend(rdev);
1321 radeon_hpd_fini(rdev);
1322 /* evict remaining vram memory */
1323 radeon_bo_evict_vram(rdev);
1325 radeon_agp_suspend(rdev);
1327 pci_save_state(dev->pdev);
1328 if (state.event == PM_EVENT_SUSPEND) {
1329 /* Shut down the device */
1330 pci_disable_device(dev->pdev);
1331 pci_set_power_state(dev->pdev, PCI_D3hot);
1334 radeon_fbdev_set_suspend(rdev, 1);
1340 * radeon_resume_kms - initiate device resume
1342 * @pdev: drm dev pointer
1344 * Bring the hw back to operating state (all asics).
1345 * Returns 0 for success or an error on failure.
1346 * Called at driver resume.
1348 int radeon_resume_kms(struct drm_device *dev)
1350 struct drm_connector *connector;
1351 struct radeon_device *rdev = dev->dev_private;
1354 if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
1358 pci_set_power_state(dev->pdev, PCI_D0);
1359 pci_restore_state(dev->pdev);
1360 if (pci_enable_device(dev->pdev)) {
1364 /* resume AGP if in use */
1365 radeon_agp_resume(rdev);
1366 radeon_resume(rdev);
1368 r = radeon_ib_ring_tests(rdev);
1370 DRM_ERROR("ib ring test failed (%d).\n", r);
1372 radeon_pm_resume(rdev);
1373 radeon_restore_bios_scratch_regs(rdev);
1375 radeon_fbdev_set_suspend(rdev, 0);
1378 /* init dig PHYs, disp eng pll */
1379 if (rdev->is_atom_bios) {
1380 radeon_atom_encoder_init(rdev);
1381 radeon_atom_disp_eng_pll_init(rdev);
1382 /* turn on the BL */
1383 if (rdev->mode_info.bl_encoder) {
1384 u8 bl_level = radeon_get_backlight_level(rdev,
1385 rdev->mode_info.bl_encoder);
1386 radeon_set_backlight_level(rdev, rdev->mode_info.bl_encoder,
1390 /* reset hpd state */
1391 radeon_hpd_init(rdev);
1392 /* blat the mode back in */
1393 drm_helper_resume_force_mode(dev);
1394 /* turn on display hw */
1395 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1396 drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
1399 drm_kms_helper_poll_enable(dev);
1404 * radeon_gpu_reset - reset the asic
1406 * @rdev: radeon device pointer
1408 * Attempt the reset the GPU if it has hung (all asics).
1409 * Returns 0 for success or an error on failure.
1411 int radeon_gpu_reset(struct radeon_device *rdev)
1413 unsigned ring_sizes[RADEON_NUM_RINGS];
1414 uint32_t *ring_data[RADEON_NUM_RINGS];
1421 down_write(&rdev->exclusive_lock);
1422 radeon_save_bios_scratch_regs(rdev);
1424 resched = ttm_bo_lock_delayed_workqueue(&rdev->mman.bdev);
1425 radeon_suspend(rdev);
1427 for (i = 0; i < RADEON_NUM_RINGS; ++i) {
1428 ring_sizes[i] = radeon_ring_backup(rdev, &rdev->ring[i],
1430 if (ring_sizes[i]) {
1432 dev_info(rdev->dev, "Saved %d dwords of commands "
1433 "on ring %d.\n", ring_sizes[i], i);
1438 r = radeon_asic_reset(rdev);
1440 dev_info(rdev->dev, "GPU reset succeeded, trying to resume\n");
1441 radeon_resume(rdev);
1444 radeon_restore_bios_scratch_regs(rdev);
1447 for (i = 0; i < RADEON_NUM_RINGS; ++i) {
1448 radeon_ring_restore(rdev, &rdev->ring[i],
1449 ring_sizes[i], ring_data[i]);
1451 ring_data[i] = NULL;
1454 r = radeon_ib_ring_tests(rdev);
1456 dev_err(rdev->dev, "ib ring test failed (%d).\n", r);
1459 radeon_suspend(rdev);
1464 radeon_fence_driver_force_completion(rdev);
1465 for (i = 0; i < RADEON_NUM_RINGS; ++i) {
1466 kfree(ring_data[i]);
1470 drm_helper_resume_force_mode(rdev->ddev);
1472 ttm_bo_unlock_delayed_workqueue(&rdev->mman.bdev, resched);
1474 /* bad news, how to tell it to userspace ? */
1475 dev_info(rdev->dev, "GPU reset failed\n");
1478 up_write(&rdev->exclusive_lock);
1486 int radeon_debugfs_add_files(struct radeon_device *rdev,
1487 struct drm_info_list *files,
1492 for (i = 0; i < rdev->debugfs_count; i++) {
1493 if (rdev->debugfs[i].files == files) {
1494 /* Already registered */
1499 i = rdev->debugfs_count + 1;
1500 if (i > RADEON_DEBUGFS_MAX_COMPONENTS) {
1501 DRM_ERROR("Reached maximum number of debugfs components.\n");
1502 DRM_ERROR("Report so we increase "
1503 "RADEON_DEBUGFS_MAX_COMPONENTS.\n");
1506 rdev->debugfs[rdev->debugfs_count].files = files;
1507 rdev->debugfs[rdev->debugfs_count].num_files = nfiles;
1508 rdev->debugfs_count = i;
1509 #if defined(CONFIG_DEBUG_FS)
1510 drm_debugfs_create_files(files, nfiles,
1511 rdev->ddev->control->debugfs_root,
1512 rdev->ddev->control);
1513 drm_debugfs_create_files(files, nfiles,
1514 rdev->ddev->primary->debugfs_root,
1515 rdev->ddev->primary);
1520 static void radeon_debugfs_remove_files(struct radeon_device *rdev)
1522 #if defined(CONFIG_DEBUG_FS)
1525 for (i = 0; i < rdev->debugfs_count; i++) {
1526 drm_debugfs_remove_files(rdev->debugfs[i].files,
1527 rdev->debugfs[i].num_files,
1528 rdev->ddev->control);
1529 drm_debugfs_remove_files(rdev->debugfs[i].files,
1530 rdev->debugfs[i].num_files,
1531 rdev->ddev->primary);
1536 #if defined(CONFIG_DEBUG_FS)
1537 int radeon_debugfs_init(struct drm_minor *minor)
1542 void radeon_debugfs_cleanup(struct drm_minor *minor)