| /* |
| * 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 <linux/console.h> |
| #include <linux/slab.h> |
| #include <linux/debugfs.h> |
| #include <drm/drmP.h> |
| #include <drm/drm_crtc_helper.h> |
| #include <drm/amdgpu_drm.h> |
| #include <linux/vgaarb.h> |
| #include <linux/vga_switcheroo.h> |
| #include <linux/efi.h> |
| #include "amdgpu.h" |
| #include "amdgpu_i2c.h" |
| #include "atom.h" |
| #include "amdgpu_atombios.h" |
| #ifdef CONFIG_DRM_AMDGPU_CIK |
| #include "cik.h" |
| #endif |
| #include "vi.h" |
| #include "bif/bif_4_1_d.h" |
| |
| static int amdgpu_debugfs_regs_init(struct amdgpu_device *adev); |
| static void amdgpu_debugfs_regs_cleanup(struct amdgpu_device *adev); |
| |
| static const char *amdgpu_asic_name[] = { |
| "BONAIRE", |
| "KAVERI", |
| "KABINI", |
| "HAWAII", |
| "MULLINS", |
| "TOPAZ", |
| "TONGA", |
| "FIJI", |
| "CARRIZO", |
| "LAST", |
| }; |
| |
| bool amdgpu_device_is_px(struct drm_device *dev) |
| { |
| struct amdgpu_device *adev = dev->dev_private; |
| |
| if (adev->flags & AMD_IS_PX) |
| return true; |
| return false; |
| } |
| |
| /* |
| * MMIO register access helper functions. |
| */ |
| uint32_t amdgpu_mm_rreg(struct amdgpu_device *adev, uint32_t reg, |
| bool always_indirect) |
| { |
| if ((reg * 4) < adev->rmmio_size && !always_indirect) |
| return readl(((void __iomem *)adev->rmmio) + (reg * 4)); |
| else { |
| unsigned long flags; |
| uint32_t ret; |
| |
| spin_lock_irqsave(&adev->mmio_idx_lock, flags); |
| writel((reg * 4), ((void __iomem *)adev->rmmio) + (mmMM_INDEX * 4)); |
| ret = readl(((void __iomem *)adev->rmmio) + (mmMM_DATA * 4)); |
| spin_unlock_irqrestore(&adev->mmio_idx_lock, flags); |
| |
| return ret; |
| } |
| } |
| |
| void amdgpu_mm_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v, |
| bool always_indirect) |
| { |
| if ((reg * 4) < adev->rmmio_size && !always_indirect) |
| writel(v, ((void __iomem *)adev->rmmio) + (reg * 4)); |
| else { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&adev->mmio_idx_lock, flags); |
| writel((reg * 4), ((void __iomem *)adev->rmmio) + (mmMM_INDEX * 4)); |
| writel(v, ((void __iomem *)adev->rmmio) + (mmMM_DATA * 4)); |
| spin_unlock_irqrestore(&adev->mmio_idx_lock, flags); |
| } |
| } |
| |
| u32 amdgpu_io_rreg(struct amdgpu_device *adev, u32 reg) |
| { |
| if ((reg * 4) < adev->rio_mem_size) |
| return ioread32(adev->rio_mem + (reg * 4)); |
| else { |
| iowrite32((reg * 4), adev->rio_mem + (mmMM_INDEX * 4)); |
| return ioread32(adev->rio_mem + (mmMM_DATA * 4)); |
| } |
| } |
| |
| void amdgpu_io_wreg(struct amdgpu_device *adev, u32 reg, u32 v) |
| { |
| |
| if ((reg * 4) < adev->rio_mem_size) |
| iowrite32(v, adev->rio_mem + (reg * 4)); |
| else { |
| iowrite32((reg * 4), adev->rio_mem + (mmMM_INDEX * 4)); |
| iowrite32(v, adev->rio_mem + (mmMM_DATA * 4)); |
| } |
| } |
| |
| /** |
| * amdgpu_mm_rdoorbell - read a doorbell dword |
| * |
| * @adev: amdgpu_device pointer |
| * @index: doorbell index |
| * |
| * Returns the value in the doorbell aperture at the |
| * requested doorbell index (CIK). |
| */ |
| u32 amdgpu_mm_rdoorbell(struct amdgpu_device *adev, u32 index) |
| { |
| if (index < adev->doorbell.num_doorbells) { |
| return readl(adev->doorbell.ptr + index); |
| } else { |
| DRM_ERROR("reading beyond doorbell aperture: 0x%08x!\n", index); |
| return 0; |
| } |
| } |
| |
| /** |
| * amdgpu_mm_wdoorbell - write a doorbell dword |
| * |
| * @adev: amdgpu_device pointer |
| * @index: doorbell index |
| * @v: value to write |
| * |
| * Writes @v to the doorbell aperture at the |
| * requested doorbell index (CIK). |
| */ |
| void amdgpu_mm_wdoorbell(struct amdgpu_device *adev, u32 index, u32 v) |
| { |
| if (index < adev->doorbell.num_doorbells) { |
| writel(v, adev->doorbell.ptr + index); |
| } else { |
| DRM_ERROR("writing beyond doorbell aperture: 0x%08x!\n", index); |
| } |
| } |
| |
| /** |
| * amdgpu_invalid_rreg - dummy reg read function |
| * |
| * @adev: amdgpu device pointer |
| * @reg: offset of register |
| * |
| * Dummy register read function. Used for register blocks |
| * that certain asics don't have (all asics). |
| * Returns the value in the register. |
| */ |
| static uint32_t amdgpu_invalid_rreg(struct amdgpu_device *adev, uint32_t reg) |
| { |
| DRM_ERROR("Invalid callback to read register 0x%04X\n", reg); |
| BUG(); |
| return 0; |
| } |
| |
| /** |
| * amdgpu_invalid_wreg - dummy reg write function |
| * |
| * @adev: amdgpu device pointer |
| * @reg: offset of register |
| * @v: value to write to the register |
| * |
| * Dummy register read function. Used for register blocks |
| * that certain asics don't have (all asics). |
| */ |
| static void amdgpu_invalid_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v) |
| { |
| DRM_ERROR("Invalid callback to write register 0x%04X with 0x%08X\n", |
| reg, v); |
| BUG(); |
| } |
| |
| /** |
| * amdgpu_block_invalid_rreg - dummy reg read function |
| * |
| * @adev: amdgpu device pointer |
| * @block: offset of instance |
| * @reg: offset of register |
| * |
| * Dummy register read function. Used for register blocks |
| * that certain asics don't have (all asics). |
| * Returns the value in the register. |
| */ |
| static uint32_t amdgpu_block_invalid_rreg(struct amdgpu_device *adev, |
| uint32_t block, uint32_t reg) |
| { |
| DRM_ERROR("Invalid callback to read register 0x%04X in block 0x%04X\n", |
| reg, block); |
| BUG(); |
| return 0; |
| } |
| |
| /** |
| * amdgpu_block_invalid_wreg - dummy reg write function |
| * |
| * @adev: amdgpu device pointer |
| * @block: offset of instance |
| * @reg: offset of register |
| * @v: value to write to the register |
| * |
| * Dummy register read function. Used for register blocks |
| * that certain asics don't have (all asics). |
| */ |
| static void amdgpu_block_invalid_wreg(struct amdgpu_device *adev, |
| uint32_t block, |
| uint32_t reg, uint32_t v) |
| { |
| DRM_ERROR("Invalid block callback to write register 0x%04X in block 0x%04X with 0x%08X\n", |
| reg, block, v); |
| BUG(); |
| } |
| |
| static int amdgpu_vram_scratch_init(struct amdgpu_device *adev) |
| { |
| int r; |
| |
| if (adev->vram_scratch.robj == NULL) { |
| r = amdgpu_bo_create(adev, AMDGPU_GPU_PAGE_SIZE, |
| PAGE_SIZE, true, AMDGPU_GEM_DOMAIN_VRAM, 0, |
| NULL, &adev->vram_scratch.robj); |
| if (r) { |
| return r; |
| } |
| } |
| |
| r = amdgpu_bo_reserve(adev->vram_scratch.robj, false); |
| if (unlikely(r != 0)) |
| return r; |
| r = amdgpu_bo_pin(adev->vram_scratch.robj, |
| AMDGPU_GEM_DOMAIN_VRAM, &adev->vram_scratch.gpu_addr); |
| if (r) { |
| amdgpu_bo_unreserve(adev->vram_scratch.robj); |
| return r; |
| } |
| r = amdgpu_bo_kmap(adev->vram_scratch.robj, |
| (void **)&adev->vram_scratch.ptr); |
| if (r) |
| amdgpu_bo_unpin(adev->vram_scratch.robj); |
| amdgpu_bo_unreserve(adev->vram_scratch.robj); |
| |
| return r; |
| } |
| |
| static void amdgpu_vram_scratch_fini(struct amdgpu_device *adev) |
| { |
| int r; |
| |
| if (adev->vram_scratch.robj == NULL) { |
| return; |
| } |
| r = amdgpu_bo_reserve(adev->vram_scratch.robj, false); |
| if (likely(r == 0)) { |
| amdgpu_bo_kunmap(adev->vram_scratch.robj); |
| amdgpu_bo_unpin(adev->vram_scratch.robj); |
| amdgpu_bo_unreserve(adev->vram_scratch.robj); |
| } |
| amdgpu_bo_unref(&adev->vram_scratch.robj); |
| } |
| |
| /** |
| * amdgpu_program_register_sequence - program an array of registers. |
| * |
| * @adev: amdgpu_device pointer |
| * @registers: pointer to the register array |
| * @array_size: size of the register array |
| * |
| * Programs an array or registers with and and or masks. |
| * This is a helper for setting golden registers. |
| */ |
| void amdgpu_program_register_sequence(struct amdgpu_device *adev, |
| const u32 *registers, |
| const u32 array_size) |
| { |
| u32 tmp, reg, and_mask, or_mask; |
| int i; |
| |
| if (array_size % 3) |
| return; |
| |
| for (i = 0; i < array_size; i +=3) { |
| reg = registers[i + 0]; |
| and_mask = registers[i + 1]; |
| or_mask = registers[i + 2]; |
| |
| if (and_mask == 0xffffffff) { |
| tmp = or_mask; |
| } else { |
| tmp = RREG32(reg); |
| tmp &= ~and_mask; |
| tmp |= or_mask; |
| } |
| WREG32(reg, tmp); |
| } |
| } |
| |
| void amdgpu_pci_config_reset(struct amdgpu_device *adev) |
| { |
| pci_write_config_dword(adev->pdev, 0x7c, AMDGPU_ASIC_RESET_DATA); |
| } |
| |
| /* |
| * GPU doorbell aperture helpers function. |
| */ |
| /** |
| * amdgpu_doorbell_init - Init doorbell driver information. |
| * |
| * @adev: amdgpu_device pointer |
| * |
| * Init doorbell driver information (CIK) |
| * Returns 0 on success, error on failure. |
| */ |
| static int amdgpu_doorbell_init(struct amdgpu_device *adev) |
| { |
| /* doorbell bar mapping */ |
| adev->doorbell.base = pci_resource_start(adev->pdev, 2); |
| adev->doorbell.size = pci_resource_len(adev->pdev, 2); |
| |
| adev->doorbell.num_doorbells = min_t(u32, adev->doorbell.size / sizeof(u32), |
| AMDGPU_DOORBELL_MAX_ASSIGNMENT+1); |
| if (adev->doorbell.num_doorbells == 0) |
| return -EINVAL; |
| |
| adev->doorbell.ptr = ioremap(adev->doorbell.base, adev->doorbell.num_doorbells * sizeof(u32)); |
| if (adev->doorbell.ptr == NULL) { |
| return -ENOMEM; |
| } |
| DRM_INFO("doorbell mmio base: 0x%08X\n", (uint32_t)adev->doorbell.base); |
| DRM_INFO("doorbell mmio size: %u\n", (unsigned)adev->doorbell.size); |
| |
| return 0; |
| } |
| |
| /** |
| * amdgpu_doorbell_fini - Tear down doorbell driver information. |
| * |
| * @adev: amdgpu_device pointer |
| * |
| * Tear down doorbell driver information (CIK) |
| */ |
| static void amdgpu_doorbell_fini(struct amdgpu_device *adev) |
| { |
| iounmap(adev->doorbell.ptr); |
| adev->doorbell.ptr = NULL; |
| } |
| |
| /** |
| * amdgpu_doorbell_get_kfd_info - Report doorbell configuration required to |
| * setup amdkfd |
| * |
| * @adev: amdgpu_device pointer |
| * @aperture_base: output returning doorbell aperture base physical address |
| * @aperture_size: output returning doorbell aperture size in bytes |
| * @start_offset: output returning # of doorbell bytes reserved for amdgpu. |
| * |
| * amdgpu and amdkfd share the doorbell aperture. amdgpu sets it up, |
| * takes doorbells required for its own rings and reports the setup to amdkfd. |
| * amdgpu reserved doorbells are at the start of the doorbell aperture. |
| */ |
| void amdgpu_doorbell_get_kfd_info(struct amdgpu_device *adev, |
| phys_addr_t *aperture_base, |
| size_t *aperture_size, |
| size_t *start_offset) |
| { |
| /* |
| * The first num_doorbells are used by amdgpu. |
| * amdkfd takes whatever's left in the aperture. |
| */ |
| if (adev->doorbell.size > adev->doorbell.num_doorbells * sizeof(u32)) { |
| *aperture_base = adev->doorbell.base; |
| *aperture_size = adev->doorbell.size; |
| *start_offset = adev->doorbell.num_doorbells * sizeof(u32); |
| } else { |
| *aperture_base = 0; |
| *aperture_size = 0; |
| *start_offset = 0; |
| } |
| } |
| |
| /* |
| * amdgpu_wb_*() |
| * Writeback is the the method by which the the GPU updates special pages |
| * in memory with the status of certain GPU events (fences, ring pointers, |
| * etc.). |
| */ |
| |
| /** |
| * amdgpu_wb_fini - Disable Writeback and free memory |
| * |
| * @adev: amdgpu_device pointer |
| * |
| * Disables Writeback and frees the Writeback memory (all asics). |
| * Used at driver shutdown. |
| */ |
| static void amdgpu_wb_fini(struct amdgpu_device *adev) |
| { |
| if (adev->wb.wb_obj) { |
| if (!amdgpu_bo_reserve(adev->wb.wb_obj, false)) { |
| amdgpu_bo_kunmap(adev->wb.wb_obj); |
| amdgpu_bo_unpin(adev->wb.wb_obj); |
| amdgpu_bo_unreserve(adev->wb.wb_obj); |
| } |
| amdgpu_bo_unref(&adev->wb.wb_obj); |
| adev->wb.wb = NULL; |
| adev->wb.wb_obj = NULL; |
| } |
| } |
| |
| /** |
| * amdgpu_wb_init- Init Writeback driver info and allocate memory |
| * |
| * @adev: amdgpu_device pointer |
| * |
| * Disables Writeback and frees the Writeback memory (all asics). |
| * Used at driver startup. |
| * Returns 0 on success or an -error on failure. |
| */ |
| static int amdgpu_wb_init(struct amdgpu_device *adev) |
| { |
| int r; |
| |
| if (adev->wb.wb_obj == NULL) { |
| r = amdgpu_bo_create(adev, AMDGPU_MAX_WB * 4, PAGE_SIZE, true, |
| AMDGPU_GEM_DOMAIN_GTT, 0, NULL, &adev->wb.wb_obj); |
| if (r) { |
| dev_warn(adev->dev, "(%d) create WB bo failed\n", r); |
| return r; |
| } |
| r = amdgpu_bo_reserve(adev->wb.wb_obj, false); |
| if (unlikely(r != 0)) { |
| amdgpu_wb_fini(adev); |
| return r; |
| } |
| r = amdgpu_bo_pin(adev->wb.wb_obj, AMDGPU_GEM_DOMAIN_GTT, |
| &adev->wb.gpu_addr); |
| if (r) { |
| amdgpu_bo_unreserve(adev->wb.wb_obj); |
| dev_warn(adev->dev, "(%d) pin WB bo failed\n", r); |
| amdgpu_wb_fini(adev); |
| return r; |
| } |
| r = amdgpu_bo_kmap(adev->wb.wb_obj, (void **)&adev->wb.wb); |
| amdgpu_bo_unreserve(adev->wb.wb_obj); |
| if (r) { |
| dev_warn(adev->dev, "(%d) map WB bo failed\n", r); |
| amdgpu_wb_fini(adev); |
| return r; |
| } |
| |
| adev->wb.num_wb = AMDGPU_MAX_WB; |
| memset(&adev->wb.used, 0, sizeof(adev->wb.used)); |
| |
| /* clear wb memory */ |
| memset((char *)adev->wb.wb, 0, AMDGPU_GPU_PAGE_SIZE); |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * amdgpu_wb_get - Allocate a wb entry |
| * |
| * @adev: amdgpu_device pointer |
| * @wb: wb index |
| * |
| * Allocate a wb slot for use by the driver (all asics). |
| * Returns 0 on success or -EINVAL on failure. |
| */ |
| int amdgpu_wb_get(struct amdgpu_device *adev, u32 *wb) |
| { |
| unsigned long offset = find_first_zero_bit(adev->wb.used, adev->wb.num_wb); |
| if (offset < adev->wb.num_wb) { |
| __set_bit(offset, adev->wb.used); |
| *wb = offset; |
| return 0; |
| } else { |
| return -EINVAL; |
| } |
| } |
| |
| /** |
| * amdgpu_wb_free - Free a wb entry |
| * |
| * @adev: amdgpu_device pointer |
| * @wb: wb index |
| * |
| * Free a wb slot allocated for use by the driver (all asics) |
| */ |
| void amdgpu_wb_free(struct amdgpu_device *adev, u32 wb) |
| { |
| if (wb < adev->wb.num_wb) |
| __clear_bit(wb, adev->wb.used); |
| } |
| |
| /** |
| * amdgpu_vram_location - try to find VRAM location |
| * @adev: amdgpu 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. |
| * |
| * Note: We don't explicitly 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 amdgpu_vram_location(struct amdgpu_device *adev, struct amdgpu_mc *mc, u64 base) |
| { |
| uint64_t limit = (uint64_t)amdgpu_vram_limit << 20; |
| |
| mc->vram_start = base; |
| if (mc->mc_vram_size > (adev->mc.mc_mask - base + 1)) { |
| dev_warn(adev->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 (limit && limit < mc->real_vram_size) |
| mc->real_vram_size = limit; |
| dev_info(adev->dev, "VRAM: %lluM 0x%016llX - 0x%016llX (%lluM used)\n", |
| mc->mc_vram_size >> 20, mc->vram_start, |
| mc->vram_end, mc->real_vram_size >> 20); |
| } |
| |
| /** |
| * amdgpu_gtt_location - try to find GTT location |
| * @adev: amdgpu 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 amdgpu_gtt_location(struct amdgpu_device *adev, struct amdgpu_mc *mc) |
| { |
| u64 size_af, size_bf; |
| |
| size_af = ((adev->mc.mc_mask - mc->vram_end) + mc->gtt_base_align) & ~mc->gtt_base_align; |
| size_bf = mc->vram_start & ~mc->gtt_base_align; |
| if (size_bf > size_af) { |
| if (mc->gtt_size > size_bf) { |
| dev_warn(adev->dev, "limiting GTT\n"); |
| mc->gtt_size = size_bf; |
| } |
| mc->gtt_start = (mc->vram_start & ~mc->gtt_base_align) - mc->gtt_size; |
| } else { |
| if (mc->gtt_size > size_af) { |
| dev_warn(adev->dev, "limiting GTT\n"); |
| mc->gtt_size = size_af; |
| } |
| mc->gtt_start = (mc->vram_end + 1 + mc->gtt_base_align) & ~mc->gtt_base_align; |
| } |
| mc->gtt_end = mc->gtt_start + mc->gtt_size - 1; |
| dev_info(adev->dev, "GTT: %lluM 0x%016llX - 0x%016llX\n", |
| mc->gtt_size >> 20, mc->gtt_start, mc->gtt_end); |
| } |
| |
| /* |
| * GPU helpers function. |
| */ |
| /** |
| * amdgpu_card_posted - check if the hw has already been initialized |
| * |
| * @adev: amdgpu_device pointer |
| * |
| * Check if the asic has been initialized (all asics). |
| * Used at driver startup. |
| * Returns true if initialized or false if not. |
| */ |
| bool amdgpu_card_posted(struct amdgpu_device *adev) |
| { |
| uint32_t reg; |
| |
| /* then check MEM_SIZE, in case the crtcs are off */ |
| reg = RREG32(mmCONFIG_MEMSIZE); |
| |
| if (reg) |
| return true; |
| |
| return false; |
| |
| } |
| |
| /** |
| * amdgpu_boot_test_post_card - check and possibly initialize the hw |
| * |
| * @adev: amdgpu_device pointer |
| * |
| * Check if the asic is initialized and if not, attempt to initialize |
| * it (all asics). |
| * Returns true if initialized or false if not. |
| */ |
| bool amdgpu_boot_test_post_card(struct amdgpu_device *adev) |
| { |
| if (amdgpu_card_posted(adev)) |
| return true; |
| |
| if (adev->bios) { |
| DRM_INFO("GPU not posted. posting now...\n"); |
| if (adev->is_atom_bios) |
| amdgpu_atom_asic_init(adev->mode_info.atom_context); |
| return true; |
| } else { |
| dev_err(adev->dev, "Card not posted and no BIOS - ignoring\n"); |
| return false; |
| } |
| } |
| |
| /** |
| * amdgpu_dummy_page_init - init dummy page used by the driver |
| * |
| * @adev: amdgpu_device pointer |
| * |
| * Allocate the dummy page used by the driver (all asics). |
| * This dummy page is used by the driver as a filler for gart entries |
| * when pages are taken out of the GART |
| * Returns 0 on sucess, -ENOMEM on failure. |
| */ |
| int amdgpu_dummy_page_init(struct amdgpu_device *adev) |
| { |
| if (adev->dummy_page.page) |
| return 0; |
| adev->dummy_page.page = alloc_page(GFP_DMA32 | GFP_KERNEL | __GFP_ZERO); |
| if (adev->dummy_page.page == NULL) |
| return -ENOMEM; |
| adev->dummy_page.addr = pci_map_page(adev->pdev, adev->dummy_page.page, |
| 0, PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); |
| if (pci_dma_mapping_error(adev->pdev, adev->dummy_page.addr)) { |
| dev_err(&adev->pdev->dev, "Failed to DMA MAP the dummy page\n"); |
| __free_page(adev->dummy_page.page); |
| adev->dummy_page.page = NULL; |
| return -ENOMEM; |
| } |
| return 0; |
| } |
| |
| /** |
| * amdgpu_dummy_page_fini - free dummy page used by the driver |
| * |
| * @adev: amdgpu_device pointer |
| * |
| * Frees the dummy page used by the driver (all asics). |
| */ |
| void amdgpu_dummy_page_fini(struct amdgpu_device *adev) |
| { |
| if (adev->dummy_page.page == NULL) |
| return; |
| pci_unmap_page(adev->pdev, adev->dummy_page.addr, |
| PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); |
| __free_page(adev->dummy_page.page); |
| adev->dummy_page.page = NULL; |
| } |
| |
| |
| /* ATOM accessor methods */ |
| /* |
| * ATOM is an interpreted byte code stored in tables in the vbios. The |
| * driver registers callbacks to access registers and the interpreter |
| * in the driver parses the tables and executes then to program specific |
| * actions (set display modes, asic init, etc.). See amdgpu_atombios.c, |
| * atombios.h, and atom.c |
| */ |
| |
| /** |
| * cail_pll_read - read PLL register |
| * |
| * @info: atom card_info pointer |
| * @reg: PLL register offset |
| * |
| * Provides a PLL register accessor for the atom interpreter (r4xx+). |
| * Returns the value of the PLL register. |
| */ |
| static uint32_t cail_pll_read(struct card_info *info, uint32_t reg) |
| { |
| return 0; |
| } |
| |
| /** |
| * cail_pll_write - write PLL register |
| * |
| * @info: atom card_info pointer |
| * @reg: PLL register offset |
| * @val: value to write to the pll register |
| * |
| * Provides a PLL register accessor for the atom interpreter (r4xx+). |
| */ |
| static void cail_pll_write(struct card_info *info, uint32_t reg, uint32_t val) |
| { |
| |
| } |
| |
| /** |
| * cail_mc_read - read MC (Memory Controller) register |
| * |
| * @info: atom card_info pointer |
| * @reg: MC register offset |
| * |
| * Provides an MC register accessor for the atom interpreter (r4xx+). |
| * Returns the value of the MC register. |
| */ |
| static uint32_t cail_mc_read(struct card_info *info, uint32_t reg) |
| { |
| return 0; |
| } |
| |
| /** |
| * cail_mc_write - write MC (Memory Controller) register |
| * |
| * @info: atom card_info pointer |
| * @reg: MC register offset |
| * @val: value to write to the pll register |
| * |
| * Provides a MC register accessor for the atom interpreter (r4xx+). |
| */ |
| static void cail_mc_write(struct card_info *info, uint32_t reg, uint32_t val) |
| { |
| |
| } |
| |
| /** |
| * cail_reg_write - write MMIO register |
| * |
| * @info: atom card_info pointer |
| * @reg: MMIO register offset |
| * @val: value to write to the pll register |
| * |
| * Provides a MMIO register accessor for the atom interpreter (r4xx+). |
| */ |
| static void cail_reg_write(struct card_info *info, uint32_t reg, uint32_t val) |
| { |
| struct amdgpu_device *adev = info->dev->dev_private; |
| |
| WREG32(reg, val); |
| } |
| |
| /** |
| * cail_reg_read - read MMIO register |
| * |
| * @info: atom card_info pointer |
| * @reg: MMIO register offset |
| * |
| * Provides an MMIO register accessor for the atom interpreter (r4xx+). |
| * Returns the value of the MMIO register. |
| */ |
| static uint32_t cail_reg_read(struct card_info *info, uint32_t reg) |
| { |
| struct amdgpu_device *adev = info->dev->dev_private; |
| uint32_t r; |
| |
| r = RREG32(reg); |
| return r; |
| } |
| |
| /** |
| * cail_ioreg_write - write IO register |
| * |
| * @info: atom card_info pointer |
| * @reg: IO register offset |
| * @val: value to write to the pll register |
| * |
| * Provides a IO register accessor for the atom interpreter (r4xx+). |
| */ |
| static void cail_ioreg_write(struct card_info *info, uint32_t reg, uint32_t val) |
| { |
| struct amdgpu_device *adev = info->dev->dev_private; |
| |
| WREG32_IO(reg, val); |
| } |
| |
| /** |
| * cail_ioreg_read - read IO register |
| * |
| * @info: atom card_info pointer |
| * @reg: IO register offset |
| * |
| * Provides an IO register accessor for the atom interpreter (r4xx+). |
| * Returns the value of the IO register. |
| */ |
| static uint32_t cail_ioreg_read(struct card_info *info, uint32_t reg) |
| { |
| struct amdgpu_device *adev = info->dev->dev_private; |
| uint32_t r; |
| |
| r = RREG32_IO(reg); |
| return r; |
| } |
| |
| /** |
| * amdgpu_atombios_fini - free the driver info and callbacks for atombios |
| * |
| * @adev: amdgpu_device pointer |
| * |
| * Frees the driver info and register access callbacks for the ATOM |
| * interpreter (r4xx+). |
| * Called at driver shutdown. |
| */ |
| static void amdgpu_atombios_fini(struct amdgpu_device *adev) |
| { |
| if (adev->mode_info.atom_context) |
| kfree(adev->mode_info.atom_context->scratch); |
| kfree(adev->mode_info.atom_context); |
| adev->mode_info.atom_context = NULL; |
| kfree(adev->mode_info.atom_card_info); |
| adev->mode_info.atom_card_info = NULL; |
| } |
| |
| /** |
| * amdgpu_atombios_init - init the driver info and callbacks for atombios |
| * |
| * @adev: amdgpu_device pointer |
| * |
| * Initializes the driver info and register access callbacks for the |
| * ATOM interpreter (r4xx+). |
| * Returns 0 on sucess, -ENOMEM on failure. |
| * Called at driver startup. |
| */ |
| static int amdgpu_atombios_init(struct amdgpu_device *adev) |
| { |
| struct card_info *atom_card_info = |
| kzalloc(sizeof(struct card_info), GFP_KERNEL); |
| |
| if (!atom_card_info) |
| return -ENOMEM; |
| |
| adev->mode_info.atom_card_info = atom_card_info; |
| atom_card_info->dev = adev->ddev; |
| atom_card_info->reg_read = cail_reg_read; |
| atom_card_info->reg_write = cail_reg_write; |
| /* needed for iio ops */ |
| if (adev->rio_mem) { |
| atom_card_info->ioreg_read = cail_ioreg_read; |
| atom_card_info->ioreg_write = cail_ioreg_write; |
| } else { |
| DRM_ERROR("Unable to find PCI I/O BAR; using MMIO for ATOM IIO\n"); |
| atom_card_info->ioreg_read = cail_reg_read; |
| atom_card_info->ioreg_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; |
| |
| adev->mode_info.atom_context = amdgpu_atom_parse(atom_card_info, adev->bios); |
| if (!adev->mode_info.atom_context) { |
| amdgpu_atombios_fini(adev); |
| return -ENOMEM; |
| } |
| |
| mutex_init(&adev->mode_info.atom_context->mutex); |
| amdgpu_atombios_scratch_regs_init(adev); |
| amdgpu_atom_allocate_fb_scratch(adev->mode_info.atom_context); |
| return 0; |
| } |
| |
| /* if we get transitioned to only one device, take VGA back */ |
| /** |
| * amdgpu_vga_set_decode - enable/disable vga decode |
| * |
| * @cookie: amdgpu_device pointer |
| * @state: enable/disable vga decode |
| * |
| * Enable/disable vga decode (all asics). |
| * Returns VGA resource flags. |
| */ |
| static unsigned int amdgpu_vga_set_decode(void *cookie, bool state) |
| { |
| struct amdgpu_device *adev = cookie; |
| amdgpu_asic_set_vga_state(adev, 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; |
| } |
| |
| /** |
| * amdgpu_check_pot_argument - check that argument is a power of two |
| * |
| * @arg: value to check |
| * |
| * Validates that a certain argument is a power of two (all asics). |
| * Returns true if argument is valid. |
| */ |
| static bool amdgpu_check_pot_argument(int arg) |
| { |
| return (arg & (arg - 1)) == 0; |
| } |
| |
| /** |
| * amdgpu_check_arguments - validate module params |
| * |
| * @adev: amdgpu_device pointer |
| * |
| * Validates certain module parameters and updates |
| * the associated values used by the driver (all asics). |
| */ |
| static void amdgpu_check_arguments(struct amdgpu_device *adev) |
| { |
| /* vramlimit must be a power of two */ |
| if (!amdgpu_check_pot_argument(amdgpu_vram_limit)) { |
| dev_warn(adev->dev, "vram limit (%d) must be a power of 2\n", |
| amdgpu_vram_limit); |
| amdgpu_vram_limit = 0; |
| } |
| |
| if (amdgpu_gart_size != -1) { |
| /* gtt size must be power of two and greater or equal to 32M */ |
| if (amdgpu_gart_size < 32) { |
| dev_warn(adev->dev, "gart size (%d) too small\n", |
| amdgpu_gart_size); |
| amdgpu_gart_size = -1; |
| } else if (!amdgpu_check_pot_argument(amdgpu_gart_size)) { |
| dev_warn(adev->dev, "gart size (%d) must be a power of 2\n", |
| amdgpu_gart_size); |
| amdgpu_gart_size = -1; |
| } |
| } |
| |
| if (!amdgpu_check_pot_argument(amdgpu_vm_size)) { |
| dev_warn(adev->dev, "VM size (%d) must be a power of 2\n", |
| amdgpu_vm_size); |
| amdgpu_vm_size = 8; |
| } |
| |
| if (amdgpu_vm_size < 1) { |
| dev_warn(adev->dev, "VM size (%d) too small, min is 1GB\n", |
| amdgpu_vm_size); |
| amdgpu_vm_size = 8; |
| } |
| |
| /* |
| * Max GPUVM size for Cayman, SI and CI are 40 bits. |
| */ |
| if (amdgpu_vm_size > 1024) { |
| dev_warn(adev->dev, "VM size (%d) too large, max is 1TB\n", |
| amdgpu_vm_size); |
| amdgpu_vm_size = 8; |
| } |
| |
| /* defines number of bits in page table versus page directory, |
| * a page is 4KB so we have 12 bits offset, minimum 9 bits in the |
| * page table and the remaining bits are in the page directory */ |
| if (amdgpu_vm_block_size == -1) { |
| |
| /* Total bits covered by PD + PTs */ |
| unsigned bits = ilog2(amdgpu_vm_size) + 18; |
| |
| /* Make sure the PD is 4K in size up to 8GB address space. |
| Above that split equal between PD and PTs */ |
| if (amdgpu_vm_size <= 8) |
| amdgpu_vm_block_size = bits - 9; |
| else |
| amdgpu_vm_block_size = (bits + 3) / 2; |
| |
| } else if (amdgpu_vm_block_size < 9) { |
| dev_warn(adev->dev, "VM page table size (%d) too small\n", |
| amdgpu_vm_block_size); |
| amdgpu_vm_block_size = 9; |
| } |
| |
| if (amdgpu_vm_block_size > 24 || |
| (amdgpu_vm_size * 1024) < (1ull << amdgpu_vm_block_size)) { |
| dev_warn(adev->dev, "VM page table size (%d) too large\n", |
| amdgpu_vm_block_size); |
| amdgpu_vm_block_size = 9; |
| } |
| } |
| |
| /** |
| * amdgpu_switcheroo_set_state - set switcheroo state |
| * |
| * @pdev: pci dev pointer |
| * @state: vga switcheroo state |
| * |
| * Callback for the switcheroo driver. Suspends or resumes the |
| * the asics before or after it is powered up using ACPI methods. |
| */ |
| static void amdgpu_switcheroo_set_state(struct pci_dev *pdev, enum vga_switcheroo_state state) |
| { |
| struct drm_device *dev = pci_get_drvdata(pdev); |
| |
| if (amdgpu_device_is_px(dev) && state == VGA_SWITCHEROO_OFF) |
| return; |
| |
| if (state == VGA_SWITCHEROO_ON) { |
| unsigned d3_delay = dev->pdev->d3_delay; |
| |
| printk(KERN_INFO "amdgpu: switched on\n"); |
| /* don't suspend or resume card normally */ |
| dev->switch_power_state = DRM_SWITCH_POWER_CHANGING; |
| |
| amdgpu_resume_kms(dev, true, true); |
| |
| dev->pdev->d3_delay = d3_delay; |
| |
| dev->switch_power_state = DRM_SWITCH_POWER_ON; |
| drm_kms_helper_poll_enable(dev); |
| } else { |
| printk(KERN_INFO "amdgpu: switched off\n"); |
| drm_kms_helper_poll_disable(dev); |
| dev->switch_power_state = DRM_SWITCH_POWER_CHANGING; |
| amdgpu_suspend_kms(dev, true, true); |
| dev->switch_power_state = DRM_SWITCH_POWER_OFF; |
| } |
| } |
| |
| /** |
| * amdgpu_switcheroo_can_switch - see if switcheroo state can change |
| * |
| * @pdev: pci dev pointer |
| * |
| * Callback for the switcheroo driver. Check of the switcheroo |
| * state can be changed. |
| * Returns true if the state can be changed, false if not. |
| */ |
| static bool amdgpu_switcheroo_can_switch(struct pci_dev *pdev) |
| { |
| struct drm_device *dev = pci_get_drvdata(pdev); |
| |
| /* |
| * FIXME: open_count is protected by drm_global_mutex but that would lead to |
| * locking inversion with the driver load path. And the access here is |
| * completely racy anyway. So don't bother with locking for now. |
| */ |
| return dev->open_count == 0; |
| } |
| |
| static const struct vga_switcheroo_client_ops amdgpu_switcheroo_ops = { |
| .set_gpu_state = amdgpu_switcheroo_set_state, |
| .reprobe = NULL, |
| .can_switch = amdgpu_switcheroo_can_switch, |
| }; |
| |
| int amdgpu_set_clockgating_state(struct amdgpu_device *adev, |
| enum amd_ip_block_type block_type, |
| enum amd_clockgating_state state) |
| { |
| int i, r = 0; |
| |
| for (i = 0; i < adev->num_ip_blocks; i++) { |
| if (adev->ip_blocks[i].type == block_type) { |
| r = adev->ip_blocks[i].funcs->set_clockgating_state((void *)adev, |
| state); |
| if (r) |
| return r; |
| } |
| } |
| return r; |
| } |
| |
| int amdgpu_set_powergating_state(struct amdgpu_device *adev, |
| enum amd_ip_block_type block_type, |
| enum amd_powergating_state state) |
| { |
| int i, r = 0; |
| |
| for (i = 0; i < adev->num_ip_blocks; i++) { |
| if (adev->ip_blocks[i].type == block_type) { |
| r = adev->ip_blocks[i].funcs->set_powergating_state((void *)adev, |
| state); |
| if (r) |
| return r; |
| } |
| } |
| return r; |
| } |
| |
| const struct amdgpu_ip_block_version * amdgpu_get_ip_block( |
| struct amdgpu_device *adev, |
| enum amd_ip_block_type type) |
| { |
| int i; |
| |
| for (i = 0; i < adev->num_ip_blocks; i++) |
| if (adev->ip_blocks[i].type == type) |
| return &adev->ip_blocks[i]; |
| |
| return NULL; |
| } |
| |
| /** |
| * amdgpu_ip_block_version_cmp |
| * |
| * @adev: amdgpu_device pointer |
| * @type: enum amd_ip_block_type |
| * @major: major version |
| * @minor: minor version |
| * |
| * return 0 if equal or greater |
| * return 1 if smaller or the ip_block doesn't exist |
| */ |
| int amdgpu_ip_block_version_cmp(struct amdgpu_device *adev, |
| enum amd_ip_block_type type, |
| u32 major, u32 minor) |
| { |
| const struct amdgpu_ip_block_version *ip_block; |
| ip_block = amdgpu_get_ip_block(adev, type); |
| |
| if (ip_block && ((ip_block->major > major) || |
| ((ip_block->major == major) && |
| (ip_block->minor >= minor)))) |
| return 0; |
| |
| return 1; |
| } |
| |
| static int amdgpu_early_init(struct amdgpu_device *adev) |
| { |
| int i, r; |
| |
| switch (adev->asic_type) { |
| case CHIP_TOPAZ: |
| case CHIP_TONGA: |
| case CHIP_FIJI: |
| case CHIP_CARRIZO: |
| if (adev->asic_type == CHIP_CARRIZO) |
| adev->family = AMDGPU_FAMILY_CZ; |
| else |
| adev->family = AMDGPU_FAMILY_VI; |
| |
| r = vi_set_ip_blocks(adev); |
| if (r) |
| return r; |
| break; |
| #ifdef CONFIG_DRM_AMDGPU_CIK |
| case CHIP_BONAIRE: |
| case CHIP_HAWAII: |
| case CHIP_KAVERI: |
| case CHIP_KABINI: |
| case CHIP_MULLINS: |
| if ((adev->asic_type == CHIP_BONAIRE) || (adev->asic_type == CHIP_HAWAII)) |
| adev->family = AMDGPU_FAMILY_CI; |
| else |
| adev->family = AMDGPU_FAMILY_KV; |
| |
| r = cik_set_ip_blocks(adev); |
| if (r) |
| return r; |
| break; |
| #endif |
| default: |
| /* FIXME: not supported yet */ |
| return -EINVAL; |
| } |
| |
| adev->ip_block_status = kcalloc(adev->num_ip_blocks, |
| sizeof(struct amdgpu_ip_block_status), GFP_KERNEL); |
| if (adev->ip_block_status == NULL) |
| return -ENOMEM; |
| |
| if (adev->ip_blocks == NULL) { |
| DRM_ERROR("No IP blocks found!\n"); |
| return r; |
| } |
| |
| for (i = 0; i < adev->num_ip_blocks; i++) { |
| if ((amdgpu_ip_block_mask & (1 << i)) == 0) { |
| DRM_ERROR("disabled ip block: %d\n", i); |
| adev->ip_block_status[i].valid = false; |
| } else { |
| if (adev->ip_blocks[i].funcs->early_init) { |
| r = adev->ip_blocks[i].funcs->early_init((void *)adev); |
| if (r == -ENOENT) |
| adev->ip_block_status[i].valid = false; |
| else if (r) |
| return r; |
| else |
| adev->ip_block_status[i].valid = true; |
| } else { |
| adev->ip_block_status[i].valid = true; |
| } |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int amdgpu_init(struct amdgpu_device *adev) |
| { |
| int i, r; |
| |
| for (i = 0; i < adev->num_ip_blocks; i++) { |
| if (!adev->ip_block_status[i].valid) |
| continue; |
| r = adev->ip_blocks[i].funcs->sw_init((void *)adev); |
| if (r) |
| return r; |
| adev->ip_block_status[i].sw = true; |
| /* need to do gmc hw init early so we can allocate gpu mem */ |
| if (adev->ip_blocks[i].type == AMD_IP_BLOCK_TYPE_GMC) { |
| r = amdgpu_vram_scratch_init(adev); |
| if (r) |
| return r; |
| r = adev->ip_blocks[i].funcs->hw_init((void *)adev); |
| if (r) |
| return r; |
| r = amdgpu_wb_init(adev); |
| if (r) |
| return r; |
| adev->ip_block_status[i].hw = true; |
| } |
| } |
| |
| for (i = 0; i < adev->num_ip_blocks; i++) { |
| if (!adev->ip_block_status[i].sw) |
| continue; |
| /* gmc hw init is done early */ |
| if (adev->ip_blocks[i].type == AMD_IP_BLOCK_TYPE_GMC) |
| continue; |
| r = adev->ip_blocks[i].funcs->hw_init((void *)adev); |
| if (r) |
| return r; |
| adev->ip_block_status[i].hw = true; |
| } |
| |
| return 0; |
| } |
| |
| static int amdgpu_late_init(struct amdgpu_device *adev) |
| { |
| int i = 0, r; |
| |
| for (i = 0; i < adev->num_ip_blocks; i++) { |
| if (!adev->ip_block_status[i].valid) |
| continue; |
| /* enable clockgating to save power */ |
| r = adev->ip_blocks[i].funcs->set_clockgating_state((void *)adev, |
| AMD_CG_STATE_GATE); |
| if (r) |
| return r; |
| if (adev->ip_blocks[i].funcs->late_init) { |
| r = adev->ip_blocks[i].funcs->late_init((void *)adev); |
| if (r) |
| return r; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int amdgpu_fini(struct amdgpu_device *adev) |
| { |
| int i, r; |
| |
| for (i = adev->num_ip_blocks - 1; i >= 0; i--) { |
| if (!adev->ip_block_status[i].hw) |
| continue; |
| if (adev->ip_blocks[i].type == AMD_IP_BLOCK_TYPE_GMC) { |
| amdgpu_wb_fini(adev); |
| amdgpu_vram_scratch_fini(adev); |
| } |
| /* ungate blocks before hw fini so that we can shutdown the blocks safely */ |
| r = adev->ip_blocks[i].funcs->set_clockgating_state((void *)adev, |
| AMD_CG_STATE_UNGATE); |
| if (r) |
| return r; |
| r = adev->ip_blocks[i].funcs->hw_fini((void *)adev); |
| /* XXX handle errors */ |
| adev->ip_block_status[i].hw = false; |
| } |
| |
| for (i = adev->num_ip_blocks - 1; i >= 0; i--) { |
| if (!adev->ip_block_status[i].sw) |
| continue; |
| r = adev->ip_blocks[i].funcs->sw_fini((void *)adev); |
| /* XXX handle errors */ |
| adev->ip_block_status[i].sw = false; |
| adev->ip_block_status[i].valid = false; |
| } |
| |
| return 0; |
| } |
| |
| static int amdgpu_suspend(struct amdgpu_device *adev) |
| { |
| int i, r; |
| |
| for (i = adev->num_ip_blocks - 1; i >= 0; i--) { |
| if (!adev->ip_block_status[i].valid) |
| continue; |
| /* ungate blocks so that suspend can properly shut them down */ |
| r = adev->ip_blocks[i].funcs->set_clockgating_state((void *)adev, |
| AMD_CG_STATE_UNGATE); |
| /* XXX handle errors */ |
| r = adev->ip_blocks[i].funcs->suspend(adev); |
| /* XXX handle errors */ |
| } |
| |
| return 0; |
| } |
| |
| static int amdgpu_resume(struct amdgpu_device *adev) |
| { |
| int i, r; |
| |
| for (i = 0; i < adev->num_ip_blocks; i++) { |
| if (!adev->ip_block_status[i].valid) |
| continue; |
| r = adev->ip_blocks[i].funcs->resume(adev); |
| if (r) |
| return r; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * amdgpu_device_init - initialize the driver |
| * |
| * @adev: amdgpu_device pointer |
| * @pdev: drm dev pointer |
| * @pdev: pci dev pointer |
| * @flags: driver flags |
| * |
| * Initializes the driver info and hw (all asics). |
| * Returns 0 for success or an error on failure. |
| * Called at driver startup. |
| */ |
| int amdgpu_device_init(struct amdgpu_device *adev, |
| struct drm_device *ddev, |
| struct pci_dev *pdev, |
| uint32_t flags) |
| { |
| int r, i; |
| bool runtime = false; |
| |
| adev->shutdown = false; |
| adev->dev = &pdev->dev; |
| adev->ddev = ddev; |
| adev->pdev = pdev; |
| adev->flags = flags; |
| adev->asic_type = flags & AMD_ASIC_MASK; |
| adev->is_atom_bios = false; |
| adev->usec_timeout = AMDGPU_MAX_USEC_TIMEOUT; |
| adev->mc.gtt_size = 512 * 1024 * 1024; |
| adev->accel_working = false; |
| adev->num_rings = 0; |
| adev->mman.buffer_funcs = NULL; |
| adev->mman.buffer_funcs_ring = NULL; |
| adev->vm_manager.vm_pte_funcs = NULL; |
| adev->vm_manager.vm_pte_funcs_ring = NULL; |
| adev->gart.gart_funcs = NULL; |
| adev->fence_context = fence_context_alloc(AMDGPU_MAX_RINGS); |
| |
| adev->smc_rreg = &amdgpu_invalid_rreg; |
| adev->smc_wreg = &amdgpu_invalid_wreg; |
| adev->pcie_rreg = &amdgpu_invalid_rreg; |
| adev->pcie_wreg = &amdgpu_invalid_wreg; |
| adev->uvd_ctx_rreg = &amdgpu_invalid_rreg; |
| adev->uvd_ctx_wreg = &amdgpu_invalid_wreg; |
| adev->didt_rreg = &amdgpu_invalid_rreg; |
| adev->didt_wreg = &amdgpu_invalid_wreg; |
| adev->audio_endpt_rreg = &amdgpu_block_invalid_rreg; |
| adev->audio_endpt_wreg = &amdgpu_block_invalid_wreg; |
| |
| DRM_INFO("initializing kernel modesetting (%s 0x%04X:0x%04X 0x%04X:0x%04X 0x%02X).\n", |
| amdgpu_asic_name[adev->asic_type], pdev->vendor, pdev->device, |
| pdev->subsystem_vendor, pdev->subsystem_device, pdev->revision); |
| |
| /* mutex initialization are all done here so we |
| * can recall function without having locking issues */ |
| mutex_init(&adev->ring_lock); |
| atomic_set(&adev->irq.ih.lock, 0); |
| mutex_init(&adev->gem.mutex); |
| mutex_init(&adev->pm.mutex); |
| mutex_init(&adev->gfx.gpu_clock_mutex); |
| mutex_init(&adev->srbm_mutex); |
| mutex_init(&adev->grbm_idx_mutex); |
| init_rwsem(&adev->exclusive_lock); |
| mutex_init(&adev->mn_lock); |
| hash_init(adev->mn_hash); |
| |
| amdgpu_check_arguments(adev); |
| |
| /* Registers mapping */ |
| /* TODO: block userspace mapping of io register */ |
| spin_lock_init(&adev->mmio_idx_lock); |
| spin_lock_init(&adev->smc_idx_lock); |
| spin_lock_init(&adev->pcie_idx_lock); |
| spin_lock_init(&adev->uvd_ctx_idx_lock); |
| spin_lock_init(&adev->didt_idx_lock); |
| spin_lock_init(&adev->audio_endpt_idx_lock); |
| |
| adev->rmmio_base = pci_resource_start(adev->pdev, 5); |
| adev->rmmio_size = pci_resource_len(adev->pdev, 5); |
| adev->rmmio = ioremap(adev->rmmio_base, adev->rmmio_size); |
| if (adev->rmmio == NULL) { |
| return -ENOMEM; |
| } |
| DRM_INFO("register mmio base: 0x%08X\n", (uint32_t)adev->rmmio_base); |
| DRM_INFO("register mmio size: %u\n", (unsigned)adev->rmmio_size); |
| |
| /* doorbell bar mapping */ |
| amdgpu_doorbell_init(adev); |
| |
| /* io port mapping */ |
| for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { |
| if (pci_resource_flags(adev->pdev, i) & IORESOURCE_IO) { |
| adev->rio_mem_size = pci_resource_len(adev->pdev, i); |
| adev->rio_mem = pci_iomap(adev->pdev, i, adev->rio_mem_size); |
| break; |
| } |
| } |
| if (adev->rio_mem == NULL) |
| DRM_ERROR("Unable to find PCI I/O BAR\n"); |
| |
| /* early init functions */ |
| r = amdgpu_early_init(adev); |
| if (r) |
| return r; |
| |
| /* if we have > 1 VGA cards, then disable the amdgpu VGA resources */ |
| /* this will fail for cards that aren't VGA class devices, just |
| * ignore it */ |
| vga_client_register(adev->pdev, adev, NULL, amdgpu_vga_set_decode); |
| |
| if (amdgpu_runtime_pm == 1) |
| runtime = true; |
| if (amdgpu_device_is_px(ddev)) |
| runtime = true; |
| vga_switcheroo_register_client(adev->pdev, &amdgpu_switcheroo_ops, runtime); |
| if (runtime) |
| vga_switcheroo_init_domain_pm_ops(adev->dev, &adev->vga_pm_domain); |
| |
| /* Read BIOS */ |
| if (!amdgpu_get_bios(adev)) |
| return -EINVAL; |
| /* Must be an ATOMBIOS */ |
| if (!adev->is_atom_bios) { |
| dev_err(adev->dev, "Expecting atombios for GPU\n"); |
| return -EINVAL; |
| } |
| r = amdgpu_atombios_init(adev); |
| if (r) |
| return r; |
| |
| /* Post card if necessary */ |
| if (!amdgpu_card_posted(adev)) { |
| if (!adev->bios) { |
| dev_err(adev->dev, "Card not posted and no BIOS - ignoring\n"); |
| return -EINVAL; |
| } |
| DRM_INFO("GPU not posted. posting now...\n"); |
| amdgpu_atom_asic_init(adev->mode_info.atom_context); |
| } |
| |
| /* Initialize clocks */ |
| r = amdgpu_atombios_get_clock_info(adev); |
| if (r) |
| return r; |
| /* init i2c buses */ |
| amdgpu_atombios_i2c_init(adev); |
| |
| /* Fence driver */ |
| r = amdgpu_fence_driver_init(adev); |
| if (r) |
| return r; |
| |
| /* init the mode config */ |
| drm_mode_config_init(adev->ddev); |
| |
| r = amdgpu_init(adev); |
| if (r) { |
| amdgpu_fini(adev); |
| return r; |
| } |
| |
| adev->accel_working = true; |
| |
| amdgpu_fbdev_init(adev); |
| |
| r = amdgpu_ib_pool_init(adev); |
| if (r) { |
| dev_err(adev->dev, "IB initialization failed (%d).\n", r); |
| return r; |
| } |
| |
| if (!adev->kernel_ctx) { |
| uint32_t id = 0; |
| r = amdgpu_ctx_alloc(adev, NULL, &id); |
| if (r) { |
| dev_err(adev->dev, "failed to create kernel context (%d).\n", r); |
| return r; |
| } |
| } |
| r = amdgpu_ib_ring_tests(adev); |
| if (r) |
| DRM_ERROR("ib ring test failed (%d).\n", r); |
| |
| r = amdgpu_gem_debugfs_init(adev); |
| if (r) { |
| DRM_ERROR("registering gem debugfs failed (%d).\n", r); |
| } |
| |
| r = amdgpu_debugfs_regs_init(adev); |
| if (r) { |
| DRM_ERROR("registering register debugfs failed (%d).\n", r); |
| } |
| |
| if ((amdgpu_testing & 1)) { |
| if (adev->accel_working) |
| amdgpu_test_moves(adev); |
| else |
| DRM_INFO("amdgpu: acceleration disabled, skipping move tests\n"); |
| } |
| if ((amdgpu_testing & 2)) { |
| if (adev->accel_working) |
| amdgpu_test_syncing(adev); |
| else |
| DRM_INFO("amdgpu: acceleration disabled, skipping sync tests\n"); |
| } |
| if (amdgpu_benchmarking) { |
| if (adev->accel_working) |
| amdgpu_benchmark(adev, amdgpu_benchmarking); |
| else |
| DRM_INFO("amdgpu: acceleration disabled, skipping benchmarks\n"); |
| } |
| |
| /* enable clockgating, etc. after ib tests, etc. since some blocks require |
| * explicit gating rather than handling it automatically. |
| */ |
| r = amdgpu_late_init(adev); |
| if (r) |
| return r; |
| |
| return 0; |
| } |
| |
| static void amdgpu_debugfs_remove_files(struct amdgpu_device *adev); |
| |
| /** |
| * amdgpu_device_fini - tear down the driver |
| * |
| * @adev: amdgpu_device pointer |
| * |
| * Tear down the driver info (all asics). |
| * Called at driver shutdown. |
| */ |
| void amdgpu_device_fini(struct amdgpu_device *adev) |
| { |
| int r; |
| |
| DRM_INFO("amdgpu: finishing device.\n"); |
| adev->shutdown = true; |
| /* evict vram memory */ |
| amdgpu_bo_evict_vram(adev); |
| amdgpu_ctx_free(adev, NULL, 0); |
| amdgpu_ib_pool_fini(adev); |
| amdgpu_fence_driver_fini(adev); |
| amdgpu_fbdev_fini(adev); |
| r = amdgpu_fini(adev); |
| kfree(adev->ip_block_status); |
| adev->ip_block_status = NULL; |
| adev->accel_working = false; |
| /* free i2c buses */ |
| amdgpu_i2c_fini(adev); |
| amdgpu_atombios_fini(adev); |
| kfree(adev->bios); |
| adev->bios = NULL; |
| vga_switcheroo_unregister_client(adev->pdev); |
| vga_client_register(adev->pdev, NULL, NULL, NULL); |
| if (adev->rio_mem) |
| pci_iounmap(adev->pdev, adev->rio_mem); |
| adev->rio_mem = NULL; |
| iounmap(adev->rmmio); |
| adev->rmmio = NULL; |
| amdgpu_doorbell_fini(adev); |
| amdgpu_debugfs_regs_cleanup(adev); |
| amdgpu_debugfs_remove_files(adev); |
| } |
| |
| |
| /* |
| * Suspend & resume. |
| */ |
| /** |
| * amdgpu_suspend_kms - initiate device suspend |
| * |
| * @pdev: drm dev pointer |
| * @state: suspend state |
| * |
| * Puts the hw in the suspend state (all asics). |
| * Returns 0 for success or an error on failure. |
| * Called at driver suspend. |
| */ |
| int amdgpu_suspend_kms(struct drm_device *dev, bool suspend, bool fbcon) |
| { |
| struct amdgpu_device *adev; |
| struct drm_crtc *crtc; |
| struct drm_connector *connector; |
| int r; |
| |
| if (dev == NULL || dev->dev_private == NULL) { |
| return -ENODEV; |
| } |
| |
| adev = dev->dev_private; |
| |
| if (dev->switch_power_state == DRM_SWITCH_POWER_OFF) |
| return 0; |
| |
| drm_kms_helper_poll_disable(dev); |
| |
| /* turn off display hw */ |
| list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
| drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF); |
| } |
| |
| /* unpin the front buffers */ |
| list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
| struct amdgpu_framebuffer *rfb = to_amdgpu_framebuffer(crtc->primary->fb); |
| struct amdgpu_bo *robj; |
| |
| if (rfb == NULL || rfb->obj == NULL) { |
| continue; |
| } |
| robj = gem_to_amdgpu_bo(rfb->obj); |
| /* don't unpin kernel fb objects */ |
| if (!amdgpu_fbdev_robj_is_fb(adev, robj)) { |
| r = amdgpu_bo_reserve(robj, false); |
| if (r == 0) { |
| amdgpu_bo_unpin(robj); |
| amdgpu_bo_unreserve(robj); |
| } |
| } |
| } |
| /* evict vram memory */ |
| amdgpu_bo_evict_vram(adev); |
| |
| amdgpu_fence_driver_suspend(adev); |
| |
| r = amdgpu_suspend(adev); |
| |
| /* evict remaining vram memory */ |
| amdgpu_bo_evict_vram(adev); |
| |
| pci_save_state(dev->pdev); |
| if (suspend) { |
| /* Shut down the device */ |
| pci_disable_device(dev->pdev); |
| pci_set_power_state(dev->pdev, PCI_D3hot); |
| } |
| |
| if (fbcon) { |
| console_lock(); |
| amdgpu_fbdev_set_suspend(adev, 1); |
| console_unlock(); |
| } |
| return 0; |
| } |
| |
| /** |
| * amdgpu_resume_kms - initiate device resume |
| * |
| * @pdev: drm dev pointer |
| * |
| * Bring the hw back to operating state (all asics). |
| * Returns 0 for success or an error on failure. |
| * Called at driver resume. |
| */ |
| int amdgpu_resume_kms(struct drm_device *dev, bool resume, bool fbcon) |
| { |
| struct drm_connector *connector; |
| struct amdgpu_device *adev = dev->dev_private; |
| int r; |
| |
| if (dev->switch_power_state == DRM_SWITCH_POWER_OFF) |
| return 0; |
| |
| if (fbcon) { |
| console_lock(); |
| } |
| if (resume) { |
| pci_set_power_state(dev->pdev, PCI_D0); |
| pci_restore_state(dev->pdev); |
| if (pci_enable_device(dev->pdev)) { |
| if (fbcon) |
| console_unlock(); |
| return -1; |
| } |
| } |
| |
| /* post card */ |
| amdgpu_atom_asic_init(adev->mode_info.atom_context); |
| |
| r = amdgpu_resume(adev); |
| |
| amdgpu_fence_driver_resume(adev); |
| |
| r = amdgpu_ib_ring_tests(adev); |
| if (r) |
| DRM_ERROR("ib ring test failed (%d).\n", r); |
| |
| r = amdgpu_late_init(adev); |
| if (r) |
| return r; |
| |
| /* blat the mode back in */ |
| if (fbcon) { |
| drm_helper_resume_force_mode(dev); |
| /* turn on display hw */ |
| list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
| drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON); |
| } |
| } |
| |
| drm_kms_helper_poll_enable(dev); |
| |
| if (fbcon) { |
| amdgpu_fbdev_set_suspend(adev, 0); |
| console_unlock(); |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * amdgpu_gpu_reset - reset the asic |
| * |
| * @adev: amdgpu device pointer |
| * |
| * Attempt the reset the GPU if it has hung (all asics). |
| * Returns 0 for success or an error on failure. |
| */ |
| int amdgpu_gpu_reset(struct amdgpu_device *adev) |
| { |
| unsigned ring_sizes[AMDGPU_MAX_RINGS]; |
| uint32_t *ring_data[AMDGPU_MAX_RINGS]; |
| |
| bool saved = false; |
| |
| int i, r; |
| int resched; |
| |
| down_write(&adev->exclusive_lock); |
| |
| if (!adev->needs_reset) { |
| up_write(&adev->exclusive_lock); |
| return 0; |
| } |
| |
| adev->needs_reset = false; |
| atomic_inc(&adev->gpu_reset_counter); |
| |
| /* block TTM */ |
| resched = ttm_bo_lock_delayed_workqueue(&adev->mman.bdev); |
| |
| r = amdgpu_suspend(adev); |
| |
| for (i = 0; i < AMDGPU_MAX_RINGS; ++i) { |
| struct amdgpu_ring *ring = adev->rings[i]; |
| if (!ring) |
| continue; |
| |
| ring_sizes[i] = amdgpu_ring_backup(ring, &ring_data[i]); |
| if (ring_sizes[i]) { |
| saved = true; |
| dev_info(adev->dev, "Saved %d dwords of commands " |
| "on ring %d.\n", ring_sizes[i], i); |
| } |
| } |
| |
| retry: |
| r = amdgpu_asic_reset(adev); |
| if (!r) { |
| dev_info(adev->dev, "GPU reset succeeded, trying to resume\n"); |
| r = amdgpu_resume(adev); |
| } |
| |
| if (!r) { |
| for (i = 0; i < AMDGPU_MAX_RINGS; ++i) { |
| struct amdgpu_ring *ring = adev->rings[i]; |
| if (!ring) |
| continue; |
| |
| amdgpu_ring_restore(ring, ring_sizes[i], ring_data[i]); |
| ring_sizes[i] = 0; |
| ring_data[i] = NULL; |
| } |
| |
| r = amdgpu_ib_ring_tests(adev); |
| if (r) { |
| dev_err(adev->dev, "ib ring test failed (%d).\n", r); |
| if (saved) { |
| saved = false; |
| r = amdgpu_suspend(adev); |
| goto retry; |
| } |
| } |
| } else { |
| amdgpu_fence_driver_force_completion(adev); |
| for (i = 0; i < AMDGPU_MAX_RINGS; ++i) { |
| if (adev->rings[i]) |
| kfree(ring_data[i]); |
| } |
| } |
| |
| drm_helper_resume_force_mode(adev->ddev); |
| |
| ttm_bo_unlock_delayed_workqueue(&adev->mman.bdev, resched); |
| if (r) { |
| /* bad news, how to tell it to userspace ? */ |
| dev_info(adev->dev, "GPU reset failed\n"); |
| } |
| |
| up_write(&adev->exclusive_lock); |
| return r; |
| } |
| |
| |
| /* |
| * Debugfs |
| */ |
| int amdgpu_debugfs_add_files(struct amdgpu_device *adev, |
| struct drm_info_list *files, |
| unsigned nfiles) |
| { |
| unsigned i; |
| |
| for (i = 0; i < adev->debugfs_count; i++) { |
| if (adev->debugfs[i].files == files) { |
| /* Already registered */ |
| return 0; |
| } |
| } |
| |
| i = adev->debugfs_count + 1; |
| if (i > AMDGPU_DEBUGFS_MAX_COMPONENTS) { |
| DRM_ERROR("Reached maximum number of debugfs components.\n"); |
| DRM_ERROR("Report so we increase " |
| "AMDGPU_DEBUGFS_MAX_COMPONENTS.\n"); |
| return -EINVAL; |
| } |
| adev->debugfs[adev->debugfs_count].files = files; |
| adev->debugfs[adev->debugfs_count].num_files = nfiles; |
| adev->debugfs_count = i; |
| #if defined(CONFIG_DEBUG_FS) |
| drm_debugfs_create_files(files, nfiles, |
| adev->ddev->control->debugfs_root, |
| adev->ddev->control); |
| drm_debugfs_create_files(files, nfiles, |
| adev->ddev->primary->debugfs_root, |
| adev->ddev->primary); |
| #endif |
| return 0; |
| } |
| |
| static void amdgpu_debugfs_remove_files(struct amdgpu_device *adev) |
| { |
| #if defined(CONFIG_DEBUG_FS) |
| unsigned i; |
| |
| for (i = 0; i < adev->debugfs_count; i++) { |
| drm_debugfs_remove_files(adev->debugfs[i].files, |
| adev->debugfs[i].num_files, |
| adev->ddev->control); |
| drm_debugfs_remove_files(adev->debugfs[i].files, |
| adev->debugfs[i].num_files, |
| adev->ddev->primary); |
| } |
| #endif |
| } |
| |
| #if defined(CONFIG_DEBUG_FS) |
| |
| static ssize_t amdgpu_debugfs_regs_read(struct file *f, char __user *buf, |
| size_t size, loff_t *pos) |
| { |
| struct amdgpu_device *adev = f->f_inode->i_private; |
| ssize_t result = 0; |
| int r; |
| |
| if (size & 0x3 || *pos & 0x3) |
| return -EINVAL; |
| |
| while (size) { |
| uint32_t value; |
| |
| if (*pos > adev->rmmio_size) |
| return result; |
| |
| value = RREG32(*pos >> 2); |
| r = put_user(value, (uint32_t *)buf); |
| if (r) |
| return r; |
| |
| result += 4; |
| buf += 4; |
| *pos += 4; |
| size -= 4; |
| } |
| |
| return result; |
| } |
| |
| static ssize_t amdgpu_debugfs_regs_write(struct file *f, const char __user *buf, |
| size_t size, loff_t *pos) |
| { |
| struct amdgpu_device *adev = f->f_inode->i_private; |
| ssize_t result = 0; |
| int r; |
| |
| if (size & 0x3 || *pos & 0x3) |
| return -EINVAL; |
| |
| while (size) { |
| uint32_t value; |
| |
| if (*pos > adev->rmmio_size) |
| return result; |
| |
| r = get_user(value, (uint32_t *)buf); |
| if (r) |
| return r; |
| |
| WREG32(*pos >> 2, value); |
| |
| result += 4; |
| buf += 4; |
| *pos += 4; |
| size -= 4; |
| } |
| |
| return result; |
| } |
| |
| static const struct file_operations amdgpu_debugfs_regs_fops = { |
| .owner = THIS_MODULE, |
| .read = amdgpu_debugfs_regs_read, |
| .write = amdgpu_debugfs_regs_write, |
| .llseek = default_llseek |
| }; |
| |
| static int amdgpu_debugfs_regs_init(struct amdgpu_device *adev) |
| { |
| struct drm_minor *minor = adev->ddev->primary; |
| struct dentry *ent, *root = minor->debugfs_root; |
| |
| ent = debugfs_create_file("amdgpu_regs", S_IFREG | S_IRUGO, root, |
| adev, &amdgpu_debugfs_regs_fops); |
| if (IS_ERR(ent)) |
| return PTR_ERR(ent); |
| i_size_write(ent->d_inode, adev->rmmio_size); |
| adev->debugfs_regs = ent; |
| |
| return 0; |
| } |
| |
| static void amdgpu_debugfs_regs_cleanup(struct amdgpu_device *adev) |
| { |
| debugfs_remove(adev->debugfs_regs); |
| adev->debugfs_regs = NULL; |
| } |
| |
| int amdgpu_debugfs_init(struct drm_minor *minor) |
| { |
| return 0; |
| } |
| |
| void amdgpu_debugfs_cleanup(struct drm_minor *minor) |
| { |
| } |
| #else |
| static int amdgpu_debugfs_regs_init(struct amdgpu_device *adev) |
| { |
| return 0; |
| } |
| static void amdgpu_debugfs_regs_cleanup(struct amdgpu_device *adev) { } |
| #endif |