--- /dev/null
+/*
+ * 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",
+ "STONEY",
+ "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,
+ AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED,
+ NULL, 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, 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:
+ case CHIP_STONEY:
+ if (adev->asic_type == CHIP_CARRIZO || adev->asic_type == CHIP_STONEY)
+ 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);
+ 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;
+ }
+
+ r = amdgpu_ctx_init(adev, true, &adev->kernel_ctx);
+ 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_fini(&adev->kernel_ctx);
+ 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 */
+ drm_modeset_lock_all(dev);
+ list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+ drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
+ }
+ drm_modeset_unlock_all(dev);
+
+ /* unpin the front buffers and cursors */
+ list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+ struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
+ struct amdgpu_framebuffer *rfb = to_amdgpu_framebuffer(crtc->primary->fb);
+ struct amdgpu_bo *robj;
+
+ if (amdgpu_crtc->cursor_bo) {
+ struct amdgpu_bo *aobj = gem_to_amdgpu_bo(amdgpu_crtc->cursor_bo);
+ r = amdgpu_bo_reserve(aobj, false);
+ if (r == 0) {
+ amdgpu_bo_unpin(aobj);
+ amdgpu_bo_unreserve(aobj);
+ }
+ }
+
+ 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;
+ struct drm_crtc *crtc;
+ 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 */
+ if (!amdgpu_card_posted(adev))
+ amdgpu_atom_asic_init(adev->mode_info.atom_context);
+
+ r = amdgpu_resume(adev);
+ if (r)
+ DRM_ERROR("amdgpu_resume failed (%d).\n", r);
+
+ amdgpu_fence_driver_resume(adev);
+
+ if (resume) {
+ 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;
+
+ /* pin cursors */
+ list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+ struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
+
+ if (amdgpu_crtc->cursor_bo) {
+ struct amdgpu_bo *aobj = gem_to_amdgpu_bo(amdgpu_crtc->cursor_bo);
+ r = amdgpu_bo_reserve(aobj, false);
+ if (r == 0) {
+ r = amdgpu_bo_pin(aobj,
+ AMDGPU_GEM_DOMAIN_VRAM,
+ &amdgpu_crtc->cursor_addr);
+ if (r != 0)
+ DRM_ERROR("Failed to pin cursor BO (%d)\n", r);
+ amdgpu_bo_unreserve(aobj);
+ }
+ }
+ }
+
+ /* blat the mode back in */
+ if (fbcon) {
+ drm_helper_resume_force_mode(dev);
+ /* turn on display hw */
+ drm_modeset_lock_all(dev);
+ list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+ drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
+ }
+ drm_modeset_unlock_all(dev);
+ }
+
+ drm_kms_helper_poll_enable(dev);
+ drm_helper_hpd_irq_event(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;
+
+ 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");
+ }
+
+ 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
Code Review / kvmfornfv.git / blobdiff