/* * Copyright 2008 Advanced Micro Devices, Inc. * Copyright 2008 Red Hat Inc. * Copyright 2009 Jerome Glisse. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * Authors: Dave Airlie * Alex Deucher * Jerome Glisse */ #include #include #include #include #include #include #include #include "radeon_reg.h" #include "radeon.h" #include "atom.h" static const char radeon_family_name[][16] = { "R100", "RV100", "RS100", "RV200", "RS200", "R200", "RV250", "RS300", "RV280", "R300", "R350", "RV350", "RV380", "R420", "R423", "RV410", "RS400", "RS480", "RS600", "RS690", "RS740", "RV515", "R520", "RV530", "RV560", "RV570", "R580", "R600", "RV610", "RV630", "RV670", "RV620", "RV635", "RS780", "RS880", "RV770", "RV730", "RV710", "RV740", "CEDAR", "REDWOOD", "JUNIPER", "CYPRESS", "HEMLOCK", "LAST", }; /* * Clear GPU surface registers. */ void radeon_surface_init(struct radeon_device *rdev) { /* FIXME: check this out */ if (rdev->family < CHIP_R600) { int i; for (i = 0; i < RADEON_GEM_MAX_SURFACES; i++) { if (rdev->surface_regs[i].bo) radeon_bo_get_surface_reg(rdev->surface_regs[i].bo); else radeon_clear_surface_reg(rdev, i); } /* enable surfaces */ WREG32(RADEON_SURFACE_CNTL, 0); } } /* * GPU scratch registers helpers function. */ void radeon_scratch_init(struct radeon_device *rdev) { int i; /* FIXME: check this out */ if (rdev->family < CHIP_R300) { rdev->scratch.num_reg = 5; } else { rdev->scratch.num_reg = 7; } for (i = 0; i < rdev->scratch.num_reg; i++) { rdev->scratch.free[i] = true; rdev->scratch.reg[i] = RADEON_SCRATCH_REG0 + (i * 4); } } int radeon_scratch_get(struct radeon_device *rdev, uint32_t *reg) { int i; for (i = 0; i < rdev->scratch.num_reg; i++) { if (rdev->scratch.free[i]) { rdev->scratch.free[i] = false; *reg = rdev->scratch.reg[i]; return 0; } } return -EINVAL; } void radeon_scratch_free(struct radeon_device *rdev, uint32_t reg) { int i; for (i = 0; i < rdev->scratch.num_reg; i++) { if (rdev->scratch.reg[i] == reg) { rdev->scratch.free[i] = true; return; } } } /** * radeon_vram_location - try to find VRAM location * @rdev: radeon device structure holding all necessary informations * @mc: memory controller structure holding memory informations * @base: base address at which to put VRAM * * Function will place try to place VRAM at base address provided * as parameter (which is so far either PCI aperture address or * for IGP TOM base address). * * If there is not enough space to fit the unvisible VRAM in the 32bits * address space then we limit the VRAM size to the aperture. * * If we are using AGP and if the AGP aperture doesn't allow us to have * room for all the VRAM than we restrict the VRAM to the PCI aperture * size and print a warning. * * This function will never fails, worst case are limiting VRAM. * * Note: GTT start, end, size should be initialized before calling this * function on AGP platform. * * Note: We don't explictly enforce VRAM start to be aligned on VRAM size, * this shouldn't be a problem as we are using the PCI aperture as a reference. * Otherwise this would be needed for rv280, all r3xx, and all r4xx, but * not IGP. * * Note: we use mc_vram_size as on some board we need to program the mc to * cover the whole aperture even if VRAM size is inferior to aperture size * Novell bug 204882 + along with lots of ubuntu ones * * Note: when limiting vram it's safe to overwritte real_vram_size because * we are not in case where real_vram_size is inferior to mc_vram_size (ie * note afected by bogus hw of Novell bug 204882 + along with lots of ubuntu * ones) * * Note: IGP TOM addr should be the same as the aperture addr, we don't * explicitly check for that thought. * * FIXME: when reducing VRAM size align new size on power of 2. */ void radeon_vram_location(struct radeon_device *rdev, struct radeon_mc *mc, u64 base) { mc->vram_start = base; if (mc->mc_vram_size > (0xFFFFFFFF - base + 1)) { dev_warn(rdev->dev, "limiting VRAM to PCI aperture size\n"); mc->real_vram_size = mc->aper_size; mc->mc_vram_size = mc->aper_size; } mc->vram_end = mc->vram_start + mc->mc_vram_size - 1; if (rdev->flags & RADEON_IS_AGP && mc->vram_end > mc->gtt_start && mc->vram_end <= mc->gtt_end) { dev_warn(rdev->dev, "limiting VRAM to PCI aperture size\n"); mc->real_vram_size = mc->aper_size; mc->mc_vram_size = mc->aper_size; } mc->vram_end = mc->vram_start + mc->mc_vram_size - 1; dev_info(rdev->dev, "VRAM: %lluM 0x%08llX - 0x%08llX (%lluM used)\n", mc->mc_vram_size >> 20, mc->vram_start, mc->vram_end, mc->real_vram_size >> 20); } /** * radeon_gtt_location - try to find GTT location * @rdev: radeon device structure holding all necessary informations * @mc: memory controller structure holding memory informations * * Function will place try to place GTT before or after VRAM. * * If GTT size is bigger than space left then we ajust GTT size. * Thus function will never fails. * * FIXME: when reducing GTT size align new size on power of 2. */ void radeon_gtt_location(struct radeon_device *rdev, struct radeon_mc *mc) { u64 size_af, size_bf; size_af = 0xFFFFFFFF - mc->vram_end; size_bf = mc->vram_start; if (size_bf > size_af) { if (mc->gtt_size > size_bf) { dev_warn(rdev->dev, "limiting GTT\n"); mc->gtt_size = size_bf; } mc->gtt_start = mc->vram_start - mc->gtt_size; } else { if (mc->gtt_size > size_af) { dev_warn(rdev->dev, "limiting GTT\n"); mc->gtt_size = size_af; } mc->gtt_start = mc->vram_end + 1; } mc->gtt_end = mc->gtt_start + mc->gtt_size - 1; dev_info(rdev->dev, "GTT: %lluM 0x%08llX - 0x%08llX\n", mc->gtt_size >> 20, mc->gtt_start, mc->gtt_end); } /* * GPU helpers function. */ bool radeon_card_posted(struct radeon_device *rdev) { uint32_t reg; /* first check CRTCs */ if (ASIC_IS_DCE4(rdev)) { reg = RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC0_REGISTER_OFFSET) | RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC1_REGISTER_OFFSET) | RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC2_REGISTER_OFFSET) | RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC3_REGISTER_OFFSET) | RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC4_REGISTER_OFFSET) | RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC5_REGISTER_OFFSET); if (reg & EVERGREEN_CRTC_MASTER_EN) return true; } else if (ASIC_IS_AVIVO(rdev)) { reg = RREG32(AVIVO_D1CRTC_CONTROL) | RREG32(AVIVO_D2CRTC_CONTROL); if (reg & AVIVO_CRTC_EN) { return true; } } else { reg = RREG32(RADEON_CRTC_GEN_CNTL) | RREG32(RADEON_CRTC2_GEN_CNTL); if (reg & RADEON_CRTC_EN) { return true; } } /* then check MEM_SIZE, in case the crtcs are off */ if (rdev->family >= CHIP_R600) reg = RREG32(R600_CONFIG_MEMSIZE); else reg = RREG32(RADEON_CONFIG_MEMSIZE); if (reg) return true; return false; } void radeon_update_bandwidth_info(struct radeon_device *rdev) { fixed20_12 a; u32 sclk, mclk; if (rdev->flags & RADEON_IS_IGP) { sclk = radeon_get_engine_clock(rdev); mclk = rdev->clock.default_mclk; a.full = dfixed_const(100); rdev->pm.sclk.full = dfixed_const(sclk); rdev->pm.sclk.full = dfixed_div(rdev->pm.sclk, a); rdev->pm.mclk.full = dfixed_const(mclk); rdev->pm.mclk.full = dfixed_div(rdev->pm.mclk, a); a.full = dfixed_const(16); /* core_bandwidth = sclk(Mhz) * 16 */ rdev->pm.core_bandwidth.full = dfixed_div(rdev->pm.sclk, a); } else { sclk = radeon_get_engine_clock(rdev); mclk = radeon_get_memory_clock(rdev); a.full = dfixed_const(100); rdev->pm.sclk.full = dfixed_const(sclk); rdev->pm.sclk.full = dfixed_div(rdev->pm.sclk, a); rdev->pm.mclk.full = dfixed_const(mclk); rdev->pm.mclk.full = dfixed_div(rdev->pm.mclk, a); } } bool radeon_boot_test_post_card(struct radeon_device *rdev) { if (radeon_card_posted(rdev)) return true; if (rdev->bios) { DRM_INFO("GPU not posted. posting now...\n"); if (rdev->is_atom_bios) atom_asic_init(rdev->mode_info.atom_context); else radeon_combios_asic_init(rdev->ddev); return true; } else { dev_err(rdev->dev, "Card not posted and no BIOS - ignoring\n"); return false; } } int radeon_dummy_page_init(struct radeon_device *rdev) { if (rdev->dummy_page.page) return 0; rdev->dummy_page.page = alloc_page(GFP_DMA32 | GFP_KERNEL | __GFP_ZERO); if (rdev->dummy_page.page == NULL) return -ENOMEM; rdev->dummy_page.addr = pci_map_page(rdev->pdev, rdev->dummy_page.page, 0, PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); if (!rdev->dummy_page.addr) { __free_page(rdev->dummy_page.page); rdev->dummy_page.page = NULL; return -ENOMEM; } return 0; } void radeon_dummy_page_fini(struct radeon_device *rdev) { if (rdev->dummy_page.page == NULL) return; pci_unmap_page(rdev->pdev, rdev->dummy_page.addr, PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); __free_page(rdev->dummy_page.page); rdev->dummy_page.page = NULL; } /* ATOM accessor methods */ static uint32_t cail_pll_read(struct card_info *info, uint32_t reg) { struct radeon_device *rdev = info->dev->dev_private; uint32_t r; r = rdev->pll_rreg(rdev, reg); return r; } static void cail_pll_write(struct card_info *info, uint32_t reg, uint32_t val) { struct radeon_device *rdev = info->dev->dev_private; rdev->pll_wreg(rdev, reg, val); } static uint32_t cail_mc_read(struct card_info *info, uint32_t reg) { struct radeon_device *rdev = info->dev->dev_private; uint32_t r; r = rdev->mc_rreg(rdev, reg); return r; } static void cail_mc_write(struct card_info *info, uint32_t reg, uint32_t val) { struct radeon_device *rdev = info->dev->dev_private; rdev->mc_wreg(rdev, reg, val); } static void cail_reg_write(struct card_info *info, uint32_t reg, uint32_t val) { struct radeon_device *rdev = info->dev->dev_private; WREG32(reg*4, val); } static uint32_t cail_reg_read(struct card_info *info, uint32_t reg) { struct radeon_device *rdev = info->dev->dev_private; uint32_t r; r = RREG32(reg*4); return r; } int radeon_atombios_init(struct radeon_device *rdev) { struct card_info *atom_card_info = kzalloc(sizeof(struct card_info), GFP_KERNEL); if (!atom_card_info) return -ENOMEM; rdev->mode_info.atom_card_info = atom_card_info; atom_card_info->dev = rdev->ddev; atom_card_info->reg_read = cail_reg_read; atom_card_info->reg_write = cail_reg_write; atom_card_info->mc_read = cail_mc_read; atom_card_info->mc_write = cail_mc_write; atom_card_info->pll_read = cail_pll_read; atom_card_info->pll_write = cail_pll_write; rdev->mode_info.atom_context = atom_parse(atom_card_info, rdev->bios); mutex_init(&rdev->mode_info.atom_context->mutex); radeon_atom_initialize_bios_scratch_regs(rdev->ddev); atom_allocate_fb_scratch(rdev->mode_info.atom_context); return 0; } void radeon_atombios_fini(struct radeon_device *rdev) { if (rdev->mode_info.atom_context) { kfree(rdev->mode_info.atom_context->scratch); kfree(rdev->mode_info.atom_context); } kfree(rdev->mode_info.atom_card_info); } int radeon_combios_init(struct radeon_device *rdev) { radeon_combios_initialize_bios_scratch_regs(rdev->ddev); return 0; } void radeon_combios_fini(struct radeon_device *rdev) { } /* if we get transitioned to only one device, tak VGA back */ static unsigned int radeon_vga_set_decode(void *cookie, bool state) { struct radeon_device *rdev = cookie; radeon_vga_set_state(rdev, state); if (state) return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM | VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM; else return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM; } void radeon_check_arguments(struct radeon_device *rdev) { /* vramlimit must be a power of two */ switch (radeon_vram_limit) { case 0: case 4: case 8: case 16: case 32: case 64: case 128: case 256: case 512: case 1024: case 2048: case 4096: break; default: dev_warn(rdev->dev, "vram limit (%d) must be a power of 2\n", radeon_vram_limit); radeon_vram_limit = 0; break; } radeon_vram_limit = radeon_vram_limit << 20; /* gtt size must be power of two and greater or equal to 32M */ switch (radeon_gart_size) { case 4: case 8: case 16: dev_warn(rdev->dev, "gart size (%d) too small forcing to 512M\n", radeon_gart_size); radeon_gart_size = 512; break; case 32: case 64: case 128: case 256: case 512: case 1024: case 2048: case 4096: break; default: dev_warn(rdev->dev, "gart size (%d) must be a power of 2\n", radeon_gart_size); radeon_gart_size = 512; break; } rdev->mc.gtt_size = radeon_gart_size * 1024 * 1024; /* AGP mode can only be -1, 1, 2, 4, 8 */ switch (radeon_agpmode) { case -1: case 0: case 1: case 2: case 4: case 8: break; default: dev_warn(rdev->dev, "invalid AGP mode %d (valid mode: " "-1, 0, 1, 2, 4, 8)\n", radeon_agpmode); radeon_agpmode = 0; break; } } static void radeon_switcheroo_set_state(struct pci_dev *pdev, enum vga_switcheroo_state state) { struct drm_device *dev = pci_get_drvdata(pdev); struct radeon_device *rdev = dev->dev_private; pm_message_t pmm = { .event = PM_EVENT_SUSPEND }; if (state == VGA_SWITCHEROO_ON) { printk(KERN_INFO "radeon: switched on\n"); /* don't suspend or resume card normally */ rdev->powered_down = false; radeon_resume_kms(dev); drm_kms_helper_poll_enable(dev); } else { printk(KERN_INFO "radeon: switched off\n"); drm_kms_helper_poll_disable(dev); radeon_suspend_kms(dev, pmm); /* don't suspend or resume card normally */ rdev->powered_down = true; } } static bool radeon_switcheroo_can_switch(struct pci_dev *pdev) { struct drm_device *dev = pci_get_drvdata(pdev); bool can_switch; spin_lock(&dev->count_lock); can_switch = (dev->open_count == 0); spin_unlock(&dev->count_lock); return can_switch; } int radeon_device_init(struct radeon_device *rdev, struct drm_device *ddev, struct pci_dev *pdev, uint32_t flags) { int r; int dma_bits; rdev->shutdown = false; rdev->dev = &pdev->dev; rdev->ddev = ddev; rdev->pdev = pdev; rdev->flags = flags; rdev->family = flags & RADEON_FAMILY_MASK; rdev->is_atom_bios = false; rdev->usec_timeout = RADEON_MAX_USEC_TIMEOUT; rdev->mc.gtt_size = radeon_gart_size * 1024 * 1024; rdev->gpu_lockup = false; rdev->accel_working = false; DRM_INFO("initializing kernel modesetting (%s 0x%04X:0x%04X).\n", radeon_family_name[rdev->family], pdev->vendor, pdev->device); /* mutex initialization are all done here so we * can recall function without having locking issues */ mutex_init(&rdev->cs_mutex); mutex_init(&rdev->ib_pool.mutex); mutex_init(&rdev->cp.mutex); mutex_init(&rdev->dc_hw_i2c_mutex); if (rdev->family >= CHIP_R600) spin_lock_init(&rdev->ih.lock); mutex_init(&rdev->gem.mutex); mutex_init(&rdev->pm.mutex); mutex_init(&rdev->vram_mutex); rwlock_init(&rdev->fence_drv.lock); INIT_LIST_HEAD(&rdev->gem.objects); init_waitqueue_head(&rdev->irq.vblank_queue); init_waitqueue_head(&rdev->irq.idle_queue); /* setup workqueue */ rdev->wq = create_workqueue("radeon"); if (rdev->wq == NULL) return -ENOMEM; /* Set asic functions */ r = radeon_asic_init(rdev); if (r) return r; radeon_check_arguments(rdev); /* all of the newer IGP chips have an internal gart * However some rs4xx report as AGP, so remove that here. */ if ((rdev->family >= CHIP_RS400) && (rdev->flags & RADEON_IS_IGP)) { rdev->flags &= ~RADEON_IS_AGP; } if (rdev->flags & RADEON_IS_AGP && radeon_agpmode == -1) { radeon_agp_disable(rdev); } /* set DMA mask + need_dma32 flags. * PCIE - can handle 40-bits. * IGP - can handle 40-bits (in theory) * AGP - generally dma32 is safest * PCI - only dma32 */ rdev->need_dma32 = false; if (rdev->flags & RADEON_IS_AGP) rdev->need_dma32 = true; if (rdev->flags & RADEON_IS_PCI) rdev->need_dma32 = true; dma_bits = rdev->need_dma32 ? 32 : 40; r = pci_set_dma_mask(rdev->pdev, DMA_BIT_MASK(dma_bits)); if (r) { printk(KERN_WARNING "radeon: No suitable DMA available.\n"); } /* Registers mapping */ /* TODO: block userspace mapping of io register */ rdev->rmmio_base = drm_get_resource_start(rdev->ddev, 2); rdev->rmmio_size = drm_get_resource_len(rdev->ddev, 2); rdev->rmmio = ioremap(rdev->rmmio_base, rdev->rmmio_size); if (rdev->rmmio == NULL) { return -ENOMEM; } DRM_INFO("register mmio base: 0x%08X\n", (uint32_t)rdev->rmmio_base); DRM_INFO("register mmio size: %u\n", (unsigned)rdev->rmmio_size); /* if we have > 1 VGA cards, then disable the radeon VGA resources */ /* this will fail for cards that aren't VGA class devices, just * ignore it */ vga_client_register(rdev->pdev, rdev, NULL, radeon_vga_set_decode); vga_switcheroo_register_client(rdev->pdev, radeon_switcheroo_set_state, radeon_switcheroo_can_switch); r = radeon_init(rdev); if (r) return r; if (rdev->flags & RADEON_IS_AGP && !rdev->accel_working) { /* Acceleration not working on AGP card try again * with fallback to PCI or PCIE GART */ radeon_asic_reset(rdev); radeon_fini(rdev); radeon_agp_disable(rdev); r = radeon_init(rdev); if (r) return r; } if (radeon_testing) { radeon_test_moves(rdev); } if (radeon_benchmarking) { radeon_benchmark(rdev); } return 0; } void radeon_device_fini(struct radeon_device *rdev) { DRM_INFO("radeon: finishing device.\n"); rdev->shutdown = true; /* evict vram memory */ radeon_bo_evict_vram(rdev); radeon_fini(rdev); destroy_workqueue(rdev->wq); vga_switcheroo_unregister_client(rdev->pdev); vga_client_register(rdev->pdev, NULL, NULL, NULL); iounmap(rdev->rmmio); rdev->rmmio = NULL; } /* * Suspend & resume. */ int radeon_suspend_kms(struct drm_device *dev, pm_message_t state) { struct radeon_device *rdev; struct drm_crtc *crtc; int r; if (dev == NULL || dev->dev_private == NULL) { return -ENODEV; } if (state.event == PM_EVENT_PRETHAW) { return 0; } rdev = dev->dev_private; if (rdev->powered_down) return 0; /* unpin the front buffers */ list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { struct radeon_framebuffer *rfb = to_radeon_framebuffer(crtc->fb); struct radeon_bo *robj; if (rfb == NULL || rfb->obj == NULL) { continue; } robj = rfb->obj->driver_private; /* don't unpin kernel fb objects */ if (!radeon_fbdev_robj_is_fb(rdev, robj)) { r = radeon_bo_reserve(robj, false); if (r == 0) { radeon_bo_unpin(robj); radeon_bo_unreserve(robj); } } } /* evict vram memory */ radeon_bo_evict_vram(rdev); /* wait for gpu to finish processing current batch */ radeon_fence_wait_last(rdev); radeon_save_bios_scratch_regs(rdev); radeon_pm_suspend(rdev); radeon_suspend(rdev); radeon_hpd_fini(rdev); /* evict remaining vram memory */ radeon_bo_evict_vram(rdev); radeon_agp_suspend(rdev); pci_save_state(dev->pdev); if (state.event == PM_EVENT_SUSPEND) { /* Shut down the device */ pci_disable_device(dev->pdev); pci_set_power_state(dev->pdev, PCI_D3hot); } acquire_console_sem(); radeon_fbdev_set_suspend(rdev, 1); release_console_sem(); return 0; } int radeon_resume_kms(struct drm_device *dev) { struct radeon_device *rdev = dev->dev_private; if (rdev->powered_down) return 0; acquire_console_sem(); pci_set_power_state(dev->pdev, PCI_D0); pci_restore_state(dev->pdev); if (pci_enable_device(dev->pdev)) { release_console_sem(); return -1; } pci_set_master(dev->pdev); /* resume AGP if in use */ radeon_agp_resume(rdev); radeon_resume(rdev); radeon_pm_resume(rdev); radeon_restore_bios_scratch_regs(rdev); radeon_fbdev_set_suspend(rdev, 0); release_console_sem(); /* reset hpd state */ radeon_hpd_init(rdev); /* blat the mode back in */ drm_helper_resume_force_mode(dev); return 0; } int radeon_gpu_reset(struct radeon_device *rdev) { int r; radeon_save_bios_scratch_regs(rdev); radeon_suspend(rdev); r = radeon_asic_reset(rdev); if (!r) { dev_info(rdev->dev, "GPU reset succeed\n"); radeon_resume(rdev); radeon_restore_bios_scratch_regs(rdev); drm_helper_resume_force_mode(rdev->ddev); return 0; } /* bad news, how to tell it to userspace ? */ dev_info(rdev->dev, "GPU reset failed\n"); return r; } /* * Debugfs */ struct radeon_debugfs { struct drm_info_list *files; unsigned num_files; }; static struct radeon_debugfs _radeon_debugfs[RADEON_DEBUGFS_MAX_NUM_FILES]; static unsigned _radeon_debugfs_count = 0; int radeon_debugfs_add_files(struct radeon_device *rdev, struct drm_info_list *files, unsigned nfiles) { unsigned i; for (i = 0; i < _radeon_debugfs_count; i++) { if (_radeon_debugfs[i].files == files) { /* Already registered */ return 0; } } if ((_radeon_debugfs_count + nfiles) > RADEON_DEBUGFS_MAX_NUM_FILES) { DRM_ERROR("Reached maximum number of debugfs files.\n"); DRM_ERROR("Report so we increase RADEON_DEBUGFS_MAX_NUM_FILES.\n"); return -EINVAL; } _radeon_debugfs[_radeon_debugfs_count].files = files; _radeon_debugfs[_radeon_debugfs_count].num_files = nfiles; _radeon_debugfs_count++; #if defined(CONFIG_DEBUG_FS) drm_debugfs_create_files(files, nfiles, rdev->ddev->control->debugfs_root, rdev->ddev->control); drm_debugfs_create_files(files, nfiles, rdev->ddev->primary->debugfs_root, rdev->ddev->primary); #endif return 0; } #if defined(CONFIG_DEBUG_FS) int radeon_debugfs_init(struct drm_minor *minor) { return 0; } void radeon_debugfs_cleanup(struct drm_minor *minor) { unsigned i; for (i = 0; i < _radeon_debugfs_count; i++) { drm_debugfs_remove_files(_radeon_debugfs[i].files, _radeon_debugfs[i].num_files, minor); } } #endif