drm/amdgpu: add graphic memory controller implementation for si v7

v4: rebase fixups
v5: rebase fixups
v5: rebase fixups
v6: rebase fixups for gart size changes
v7: add gmc v6 firmware versions for sysfs dump
Signed-off-by: Ken Wang <Qingqing.Wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c

+
+/*
+ * Copyright 2014 Advanced Micro Devices, Inc.
+ *
+ * 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.
+ *
+ */
+#include <linux/firmware.h>
+#include "drmP.h"
+#include "amdgpu.h"
+#include "gmc_v6_0.h"
+#include "amdgpu_ucode.h"
+#include "si/sid.h"
+
+static void gmc_v6_0_set_gart_funcs(struct amdgpu_device *adev);
+static void gmc_v6_0_set_irq_funcs(struct amdgpu_device *adev);
+static int gmc_v6_0_wait_for_idle(void *handle);
+
+MODULE_FIRMWARE("radeon/tahiti_mc.bin");
+MODULE_FIRMWARE("radeon/pitcairn_mc.bin");
+MODULE_FIRMWARE("radeon/verde_mc.bin");
+MODULE_FIRMWARE("radeon/oland_mc.bin");
+
+static const u32 crtc_offsets[6] =
+{
+	SI_CRTC0_REGISTER_OFFSET,
+	SI_CRTC1_REGISTER_OFFSET,
+	SI_CRTC2_REGISTER_OFFSET,
+	SI_CRTC3_REGISTER_OFFSET,
+	SI_CRTC4_REGISTER_OFFSET,
+	SI_CRTC5_REGISTER_OFFSET
+};
+
+static void gmc_v6_0_mc_stop(struct amdgpu_device *adev,
+			     struct amdgpu_mode_mc_save *save)
+{
+	u32 blackout;
+
+	if (adev->mode_info.num_crtc)
+		amdgpu_display_stop_mc_access(adev, save);
+
+	gmc_v6_0_wait_for_idle((void *)adev);
+
+	blackout = RREG32(MC_SHARED_BLACKOUT_CNTL);
+	if (REG_GET_FIELD(blackout, mmMC_SHARED_BLACKOUT_CNTL, xxBLACKOUT_MODE) != 1) {
+		/* Block CPU access */
+		WREG32(BIF_FB_EN, 0);
+		/* blackout the MC */
+		blackout = REG_SET_FIELD(blackout,
+					 mmMC_SHARED_BLACKOUT_CNTL, xxBLACKOUT_MODE, 0);
+		WREG32(MC_SHARED_BLACKOUT_CNTL, blackout | 1);
+	}
+	/* wait for the MC to settle */
+	udelay(100);
+
+}
+
+static void gmc_v6_0_mc_resume(struct amdgpu_device *adev,
+			       struct amdgpu_mode_mc_save *save)
+{
+	u32 tmp;
+
+	/* unblackout the MC */
+	tmp = RREG32(MC_SHARED_BLACKOUT_CNTL);
+	tmp = REG_SET_FIELD(tmp, mmMC_SHARED_BLACKOUT_CNTL, xxBLACKOUT_MODE, 0);
+	WREG32(MC_SHARED_BLACKOUT_CNTL, tmp);
+	/* allow CPU access */
+	tmp = REG_SET_FIELD(0, mmBIF_FB_EN, xxFB_READ_EN, 1);
+	tmp = REG_SET_FIELD(tmp, mmBIF_FB_EN, xxFB_WRITE_EN, 1);
+	WREG32(BIF_FB_EN, tmp);
+
+	if (adev->mode_info.num_crtc)
+		amdgpu_display_resume_mc_access(adev, save);
+
+}
+
+static int gmc_v6_0_init_microcode(struct amdgpu_device *adev)
+{
+	const char *chip_name;
+	char fw_name[30];
+	int err;
+
+	DRM_DEBUG("\n");
+
+	switch (adev->asic_type) {
+	case CHIP_TAHITI:
+		chip_name = "tahiti";
+		break;
+	case CHIP_PITCAIRN:
+		chip_name = "pitcairn";
+		break;
+	case CHIP_VERDE:
+		chip_name = "verde";
+		break;
+	case CHIP_OLAND:
+		chip_name = "oland";
+		break;
+	case CHIP_HAINAN:
+		chip_name = "hainan";
+		break;
+	default: BUG();
+	}
+
+	snprintf(fw_name, sizeof(fw_name), "radeon/%s_mc.bin", chip_name);
+	err = request_firmware(&adev->mc.fw, fw_name, adev->dev);
+	if (err)
+		goto out;
+
+	err = amdgpu_ucode_validate(adev->mc.fw);
+
+out:
+	if (err) {
+		printk(KERN_ERR
+		       "si_mc: Failed to load firmware \"%s\"\n",
+		       fw_name);
+		release_firmware(adev->mc.fw);
+		adev->mc.fw = NULL;
+	}
+	return err;
+}
+
+static int gmc_v6_0_mc_load_microcode(struct amdgpu_device *adev)
+{
+	const __le32 *new_fw_data = NULL;
+	u32 running;
+	const __le32 *new_io_mc_regs = NULL;
+	int i, regs_size, ucode_size;
+	const struct mc_firmware_header_v1_0 *hdr;
+
+	if (!adev->mc.fw)
+		return -EINVAL;
+
+	hdr = (const struct mc_firmware_header_v1_0 *)adev->mc.fw->data;
+
+	amdgpu_ucode_print_mc_hdr(&hdr->header);
+
+	adev->mc.fw_version = le32_to_cpu(hdr->header.ucode_version);
+	regs_size = le32_to_cpu(hdr->io_debug_size_bytes) / (4 * 2);
+	new_io_mc_regs = (const __le32 *)
+		(adev->mc.fw->data + le32_to_cpu(hdr->io_debug_array_offset_bytes));
+	ucode_size = le32_to_cpu(hdr->header.ucode_size_bytes) / 4;
+	new_fw_data = (const __le32 *)
+		(adev->mc.fw->data + le32_to_cpu(hdr->header.ucode_array_offset_bytes));
+
+	running = RREG32(MC_SEQ_SUP_CNTL) & RUN_MASK;
+
+	if (running == 0) {
+
+		/* reset the engine and set to writable */
+		WREG32(MC_SEQ_SUP_CNTL, 0x00000008);
+		WREG32(MC_SEQ_SUP_CNTL, 0x00000010);
+
+		/* load mc io regs */
+		for (i = 0; i < regs_size; i++) {
+			WREG32(MC_SEQ_IO_DEBUG_INDEX, le32_to_cpup(new_io_mc_regs++));
+			WREG32(MC_SEQ_IO_DEBUG_DATA, le32_to_cpup(new_io_mc_regs++));
+		}
+		/* load the MC ucode */
+		for (i = 0; i < ucode_size; i++) {
+			WREG32(MC_SEQ_SUP_PGM, le32_to_cpup(new_fw_data++));
+		}
+
+		/* put the engine back into the active state */
+		WREG32(MC_SEQ_SUP_CNTL, 0x00000008);
+		WREG32(MC_SEQ_SUP_CNTL, 0x00000004);
+		WREG32(MC_SEQ_SUP_CNTL, 0x00000001);
+
+		/* wait for training to complete */
+		for (i = 0; i < adev->usec_timeout; i++) {
+			if (RREG32(MC_SEQ_TRAIN_WAKEUP_CNTL) & TRAIN_DONE_D0)
+				break;
+			udelay(1);
+		}
+		for (i = 0; i < adev->usec_timeout; i++) {
+			if (RREG32(MC_SEQ_TRAIN_WAKEUP_CNTL) & TRAIN_DONE_D1)
+				break;
+			udelay(1);
+		}
+
+	}
+
+	return 0;
+}
+
+static void gmc_v6_0_vram_gtt_location(struct amdgpu_device *adev,
+				       struct amdgpu_mc *mc)
+{
+	if (mc->mc_vram_size > 0xFFC0000000ULL) {
+		dev_warn(adev->dev, "limiting VRAM\n");
+		mc->real_vram_size = 0xFFC0000000ULL;
+		mc->mc_vram_size = 0xFFC0000000ULL;
+	}
+	amdgpu_vram_location(adev, &adev->mc, 0);
+	adev->mc.gtt_base_align = 0;
+	amdgpu_gtt_location(adev, mc);
+}
+
+static void gmc_v6_0_mc_program(struct amdgpu_device *adev)
+{
+	struct amdgpu_mode_mc_save save;
+	u32 tmp;
+	int i, j;
+
+	/* Initialize HDP */
+	for (i = 0, j = 0; i < 32; i++, j += 0x6) {
+		WREG32((0xb05 + j), 0x00000000);
+		WREG32((0xb06 + j), 0x00000000);
+		WREG32((0xb07 + j), 0x00000000);
+		WREG32((0xb08 + j), 0x00000000);
+		WREG32((0xb09 + j), 0x00000000);
+	}
+	WREG32(HDP_REG_COHERENCY_FLUSH_CNTL, 0);
+
+	gmc_v6_0_mc_stop(adev, &save);
+
+	if (gmc_v6_0_wait_for_idle((void *)adev)) {
+		dev_warn(adev->dev, "Wait for MC idle timedout !\n");
+	}
+
+	WREG32(VGA_HDP_CONTROL, VGA_MEMORY_DISABLE);
+	/* Update configuration */
+	WREG32(MC_VM_SYSTEM_APERTURE_LOW_ADDR,
+	       adev->mc.vram_start >> 12);
+	WREG32(MC_VM_SYSTEM_APERTURE_HIGH_ADDR,
+	       adev->mc.vram_end >> 12);
+	WREG32(MC_VM_SYSTEM_APERTURE_DEFAULT_ADDR,
+	       adev->vram_scratch.gpu_addr >> 12);
+	tmp = ((adev->mc.vram_end >> 24) & 0xFFFF) << 16;
+	tmp |= ((adev->mc.vram_start >> 24) & 0xFFFF);
+	WREG32(MC_VM_FB_LOCATION, tmp);
+	/* XXX double check these! */
+	WREG32(HDP_NONSURFACE_BASE, (adev->mc.vram_start >> 8));
+	WREG32(HDP_NONSURFACE_INFO, (2 << 7) | (1 << 30));
+	WREG32(HDP_NONSURFACE_SIZE, 0x3FFFFFFF);
+	WREG32(MC_VM_AGP_BASE, 0);
+	WREG32(MC_VM_AGP_TOP, 0x0FFFFFFF);
+	WREG32(MC_VM_AGP_BOT, 0x0FFFFFFF);
+
+	if (gmc_v6_0_wait_for_idle((void *)adev)) {
+		dev_warn(adev->dev, "Wait for MC idle timedout !\n");
+	}
+	gmc_v6_0_mc_resume(adev, &save);
+	amdgpu_display_set_vga_render_state(adev, false);
+}
+
+static int gmc_v6_0_mc_init(struct amdgpu_device *adev)
+{
+
+	u32 tmp;
+	int chansize, numchan;
+
+	tmp = RREG32(MC_ARB_RAMCFG);
+	if (tmp & CHANSIZE_OVERRIDE) {
+		chansize = 16;
+	} else if (tmp & CHANSIZE_MASK) {
+		chansize = 64;
+	} else {
+		chansize = 32;
+	}
+	tmp = RREG32(MC_SHARED_CHMAP);
+	switch ((tmp & NOOFCHAN_MASK) >> NOOFCHAN_SHIFT) {
+	case 0:
+	default:
+		numchan = 1;
+		break;
+	case 1:
+		numchan = 2;
+		break;
+	case 2:
+		numchan = 4;
+		break;
+	case 3:
+		numchan = 8;
+		break;
+	case 4:
+		numchan = 3;
+		break;
+	case 5:
+		numchan = 6;
+		break;
+	case 6:
+		numchan = 10;
+		break;
+	case 7:
+		numchan = 12;
+		break;
+	case 8:
+		numchan = 16;
+		break;
+	}
+	adev->mc.vram_width = numchan * chansize;
+	/* Could aper size report 0 ? */
+	adev->mc.aper_base = pci_resource_start(adev->pdev, 0);
+	adev->mc.aper_size = pci_resource_len(adev->pdev, 0);
+	/* size in MB on si */
+	adev->mc.mc_vram_size = RREG32(CONFIG_MEMSIZE) * 1024ULL * 1024ULL;
+	adev->mc.real_vram_size = RREG32(CONFIG_MEMSIZE) * 1024ULL * 1024ULL;
+	adev->mc.visible_vram_size = adev->mc.aper_size;
+
+	/* unless the user had overridden it, set the gart
+	 * size equal to the 1024 or vram, whichever is larger.
+	 */
+	if (amdgpu_gart_size == -1)
+		adev->mc.gtt_size = amdgpu_ttm_get_gtt_mem_size(adev);
+	else
+		adev->mc.gtt_size = (uint64_t)amdgpu_gart_size << 20;
+
+	gmc_v6_0_vram_gtt_location(adev, &adev->mc);
+
+	return 0;
+}
+
+static void gmc_v6_0_gart_flush_gpu_tlb(struct amdgpu_device *adev,
+					uint32_t vmid)
+{
+	WREG32(HDP_MEM_COHERENCY_FLUSH_CNTL, 0);
+
+	WREG32(VM_INVALIDATE_REQUEST, 1 << vmid);
+}
+
+static int gmc_v6_0_gart_set_pte_pde(struct amdgpu_device *adev,
+				     void *cpu_pt_addr,
+				     uint32_t gpu_page_idx,
+				     uint64_t addr,
+				     uint32_t flags)
+{
+	void __iomem *ptr = (void *)cpu_pt_addr;
+	uint64_t value;
+
+	value = addr & 0xFFFFFFFFFFFFF000ULL;
+	value |= flags;
+	writeq(value, ptr + (gpu_page_idx * 8));
+
+	return 0;
+}
+
+static void gmc_v6_0_set_fault_enable_default(struct amdgpu_device *adev,
+					      bool value)
+{
+	u32 tmp;
+
+	tmp = RREG32(VM_CONTEXT1_CNTL);
+	tmp = REG_SET_FIELD(tmp, mmVM_CONTEXT1_CNTL,
+			    xxRANGE_PROTECTION_FAULT_ENABLE_DEFAULT, value);
+	tmp = REG_SET_FIELD(tmp, mmVM_CONTEXT1_CNTL,
+			    xxDUMMY_PAGE_PROTECTION_FAULT_ENABLE_DEFAULT, value);
+	tmp = REG_SET_FIELD(tmp, mmVM_CONTEXT1_CNTL,
+			    xxPDE0_PROTECTION_FAULT_ENABLE_DEFAULT, value);
+	tmp = REG_SET_FIELD(tmp, mmVM_CONTEXT1_CNTL,
+			    xxVALID_PROTECTION_FAULT_ENABLE_DEFAULT, value);
+	tmp = REG_SET_FIELD(tmp, mmVM_CONTEXT1_CNTL,
+			    xxREAD_PROTECTION_FAULT_ENABLE_DEFAULT, value);
+	tmp = REG_SET_FIELD(tmp, mmVM_CONTEXT1_CNTL,
+			    xxWRITE_PROTECTION_FAULT_ENABLE_DEFAULT, value);
+	WREG32(VM_CONTEXT1_CNTL, tmp);
+}
+
+static int gmc_v6_0_gart_enable(struct amdgpu_device *adev)
+{
+	int r, i;
+
+	if (adev->gart.robj == NULL) {
+		dev_err(adev->dev, "No VRAM object for PCIE GART.\n");
+		return -EINVAL;
+	}
+	r = amdgpu_gart_table_vram_pin(adev);
+	if (r)
+		return r;
+	/* Setup TLB control */
+	WREG32(MC_VM_MX_L1_TLB_CNTL,
+	       (0xA << 7) |
+	       ENABLE_L1_TLB |
+	       ENABLE_L1_FRAGMENT_PROCESSING |
+	       SYSTEM_ACCESS_MODE_NOT_IN_SYS |
+	       ENABLE_ADVANCED_DRIVER_MODEL |
+	       SYSTEM_APERTURE_UNMAPPED_ACCESS_PASS_THRU);
+	/* Setup L2 cache */
+	WREG32(VM_L2_CNTL, ENABLE_L2_CACHE |
+	       ENABLE_L2_FRAGMENT_PROCESSING |
+	       ENABLE_L2_PTE_CACHE_LRU_UPDATE_BY_WRITE |
+	       ENABLE_L2_PDE0_CACHE_LRU_UPDATE_BY_WRITE |
+	       EFFECTIVE_L2_QUEUE_SIZE(7) |
+	       CONTEXT1_IDENTITY_ACCESS_MODE(1));
+	WREG32(VM_L2_CNTL2, INVALIDATE_ALL_L1_TLBS | INVALIDATE_L2_CACHE);
+	WREG32(VM_L2_CNTL3, L2_CACHE_BIGK_ASSOCIATIVITY |
+	       BANK_SELECT(4) |
+	       L2_CACHE_BIGK_FRAGMENT_SIZE(4));
+	/* setup context0 */
+	WREG32(VM_CONTEXT0_PAGE_TABLE_START_ADDR, adev->mc.gtt_start >> 12);
+	WREG32(VM_CONTEXT0_PAGE_TABLE_END_ADDR, adev->mc.gtt_end >> 12);
+	WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR, adev->gart.table_addr >> 12);
+	WREG32(VM_CONTEXT0_PROTECTION_FAULT_DEFAULT_ADDR,
+			(u32)(adev->dummy_page.addr >> 12));
+	WREG32(VM_CONTEXT0_CNTL2, 0);
+	WREG32(VM_CONTEXT0_CNTL, (ENABLE_CONTEXT | PAGE_TABLE_DEPTH(0) |
+				  RANGE_PROTECTION_FAULT_ENABLE_DEFAULT));
+
+	WREG32(0x575, 0);
+	WREG32(0x576, 0);
+	WREG32(0x577, 0);
+
+	/* empty context1-15 */
+	/* set vm size, must be a multiple of 4 */
+	WREG32(VM_CONTEXT1_PAGE_TABLE_START_ADDR, 0);
+	WREG32(VM_CONTEXT1_PAGE_TABLE_END_ADDR, adev->vm_manager.max_pfn - 1);
+	/* Assign the pt base to something valid for now; the pts used for
+	 * the VMs are determined by the application and setup and assigned
+	 * on the fly in the vm part of radeon_gart.c
+	 */
+	for (i = 1; i < 16; i++) {
+		if (i < 8)
+			WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + i,
+			       adev->gart.table_addr >> 12);
+		else
+			WREG32(VM_CONTEXT8_PAGE_TABLE_BASE_ADDR + i - 8,
+			       adev->gart.table_addr >> 12);
+	}
+
+	/* enable context1-15 */
+	WREG32(VM_CONTEXT1_PROTECTION_FAULT_DEFAULT_ADDR,
+	       (u32)(adev->dummy_page.addr >> 12));
+	WREG32(VM_CONTEXT1_CNTL2, 4);
+	WREG32(VM_CONTEXT1_CNTL, ENABLE_CONTEXT | PAGE_TABLE_DEPTH(1) |
+				PAGE_TABLE_BLOCK_SIZE(amdgpu_vm_block_size - 9) |
+				RANGE_PROTECTION_FAULT_ENABLE_INTERRUPT |
+				RANGE_PROTECTION_FAULT_ENABLE_DEFAULT |
+				DUMMY_PAGE_PROTECTION_FAULT_ENABLE_INTERRUPT |
+				DUMMY_PAGE_PROTECTION_FAULT_ENABLE_DEFAULT |
+				PDE0_PROTECTION_FAULT_ENABLE_INTERRUPT |
+				PDE0_PROTECTION_FAULT_ENABLE_DEFAULT |
+				VALID_PROTECTION_FAULT_ENABLE_INTERRUPT |
+				VALID_PROTECTION_FAULT_ENABLE_DEFAULT |
+				READ_PROTECTION_FAULT_ENABLE_INTERRUPT |
+				READ_PROTECTION_FAULT_ENABLE_DEFAULT |
+				WRITE_PROTECTION_FAULT_ENABLE_INTERRUPT |
+				WRITE_PROTECTION_FAULT_ENABLE_DEFAULT);
+
+	gmc_v6_0_gart_flush_gpu_tlb(adev, 0);
+	DRM_INFO("PCIE GART of %uM enabled (table at 0x%016llX).\n",
+		 (unsigned)(adev->mc.gtt_size >> 20),
+		 (unsigned long long)adev->gart.table_addr);
+	adev->gart.ready = true;
+	return 0;
+}
+
+static int gmc_v6_0_gart_init(struct amdgpu_device *adev)
+{
+	int r;
+
+	if (adev->gart.robj) {
+		WARN(1, "gmc_v6_0 PCIE GART already initialized\n");
+		return 0;
+	}
+	r = amdgpu_gart_init(adev);
+	if (r)
+		return r;
+	adev->gart.table_size = adev->gart.num_gpu_pages * 8;
+	return amdgpu_gart_table_vram_alloc(adev);
+}
+
+static void gmc_v6_0_gart_disable(struct amdgpu_device *adev)
+{
+	/*unsigned i;
+
+	for (i = 1; i < 16; ++i) {
+		uint32_t reg;
+		if (i < 8)
+			reg = VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + i ;
+		else
+			reg = VM_CONTEXT8_PAGE_TABLE_BASE_ADDR + (i - 8);
+		adev->vm_manager.saved_table_addr[i] = RREG32(reg);
+	}*/
+
+	/* Disable all tables */
+	WREG32(VM_CONTEXT0_CNTL, 0);
+	WREG32(VM_CONTEXT1_CNTL, 0);
+	/* Setup TLB control */
+	WREG32(MC_VM_MX_L1_TLB_CNTL, SYSTEM_ACCESS_MODE_NOT_IN_SYS |
+	       SYSTEM_APERTURE_UNMAPPED_ACCESS_PASS_THRU);
+	/* Setup L2 cache */
+	WREG32(VM_L2_CNTL, ENABLE_L2_PTE_CACHE_LRU_UPDATE_BY_WRITE |
+	       ENABLE_L2_PDE0_CACHE_LRU_UPDATE_BY_WRITE |
+	       EFFECTIVE_L2_QUEUE_SIZE(7) |
+	       CONTEXT1_IDENTITY_ACCESS_MODE(1));
+	WREG32(VM_L2_CNTL2, 0);
+	WREG32(VM_L2_CNTL3, L2_CACHE_BIGK_ASSOCIATIVITY |
+	       L2_CACHE_BIGK_FRAGMENT_SIZE(0));
+	amdgpu_gart_table_vram_unpin(adev);
+}
+
+static void gmc_v6_0_gart_fini(struct amdgpu_device *adev)
+{
+	amdgpu_gart_table_vram_free(adev);
+	amdgpu_gart_fini(adev);
+}
+
+static int gmc_v6_0_vm_init(struct amdgpu_device *adev)
+{
+	/*
+	 * number of VMs
+	 * VMID 0 is reserved for System
+	 * amdgpu graphics/compute will use VMIDs 1-7
+	 * amdkfd will use VMIDs 8-15
+	 */
+	adev->vm_manager.num_ids = AMDGPU_NUM_OF_VMIDS;
+	amdgpu_vm_manager_init(adev);
+
+	/* base offset of vram pages */
+	if (adev->flags & AMD_IS_APU) {
+		u64 tmp = RREG32(MC_VM_FB_OFFSET);
+		tmp <<= 22;
+		adev->vm_manager.vram_base_offset = tmp;
+	} else
+		adev->vm_manager.vram_base_offset = 0;
+
+	return 0;
+}
+
+static void gmc_v6_0_vm_fini(struct amdgpu_device *adev)
+{
+}
+
+static void gmc_v6_0_vm_decode_fault(struct amdgpu_device *adev,
+				     u32 status, u32 addr, u32 mc_client)
+{
+	u32 mc_id;
+	u32 vmid = REG_GET_FIELD(status, mmVM_CONTEXT1_PROTECTION_FAULT_STATUS, xxVMID);
+	u32 protections = REG_GET_FIELD(status, mmVM_CONTEXT1_PROTECTION_FAULT_STATUS,
+					xxPROTECTIONS);
+	char block[5] = { mc_client >> 24, (mc_client >> 16) & 0xff,
+		(mc_client >> 8) & 0xff, mc_client & 0xff, 0 };
+
+	mc_id = REG_GET_FIELD(status, mmVM_CONTEXT1_PROTECTION_FAULT_STATUS,
+			      xxMEMORY_CLIENT_ID);
+
+	printk("VM fault (0x%02x, vmid %d) at page %u, %s from '%s' (0x%08x) (%d)\n",
+	       protections, vmid, addr,
+	       REG_GET_FIELD(status, mmVM_CONTEXT1_PROTECTION_FAULT_STATUS,
+			     xxMEMORY_CLIENT_RW) ?
+	       "write" : "read", block, mc_client, mc_id);
+}
+
+/*
+static const u32 mc_cg_registers[] = {
+	MC_HUB_MISC_HUB_CG,
+	MC_HUB_MISC_SIP_CG,
+	MC_HUB_MISC_VM_CG,
+	MC_XPB_CLK_GAT,
+	ATC_MISC_CG,
+	MC_CITF_MISC_WR_CG,
+	MC_CITF_MISC_RD_CG,
+	MC_CITF_MISC_VM_CG,
+	VM_L2_CG,
+};
+
+static const u32 mc_cg_ls_en[] = {
+	MC_HUB_MISC_HUB_CG__MEM_LS_ENABLE_MASK,
+	MC_HUB_MISC_SIP_CG__MEM_LS_ENABLE_MASK,
+	MC_HUB_MISC_VM_CG__MEM_LS_ENABLE_MASK,
+	MC_XPB_CLK_GAT__MEM_LS_ENABLE_MASK,
+	ATC_MISC_CG__MEM_LS_ENABLE_MASK,
+	MC_CITF_MISC_WR_CG__MEM_LS_ENABLE_MASK,
+	MC_CITF_MISC_RD_CG__MEM_LS_ENABLE_MASK,
+	MC_CITF_MISC_VM_CG__MEM_LS_ENABLE_MASK,
+	VM_L2_CG__MEM_LS_ENABLE_MASK,
+};
+
+static const u32 mc_cg_en[] = {
+	MC_HUB_MISC_HUB_CG__ENABLE_MASK,
+	MC_HUB_MISC_SIP_CG__ENABLE_MASK,
+	MC_HUB_MISC_VM_CG__ENABLE_MASK,
+	MC_XPB_CLK_GAT__ENABLE_MASK,
+	ATC_MISC_CG__ENABLE_MASK,
+	MC_CITF_MISC_WR_CG__ENABLE_MASK,
+	MC_CITF_MISC_RD_CG__ENABLE_MASK,
+	MC_CITF_MISC_VM_CG__ENABLE_MASK,
+	VM_L2_CG__ENABLE_MASK,
+};
+
+static void gmc_v6_0_enable_mc_ls(struct amdgpu_device *adev,
+				  bool enable)
+{
+	int i;
+	u32 orig, data;
+
+	for (i = 0; i < ARRAY_SIZE(mc_cg_registers); i++) {
+		orig = data = RREG32(mc_cg_registers[i]);
+		if (enable && (adev->cg_flags & AMDGPU_CG_SUPPORT_MC_LS))
+			data |= mc_cg_ls_en[i];
+		else
+			data &= ~mc_cg_ls_en[i];
+		if (data != orig)
+			WREG32(mc_cg_registers[i], data);
+	}
+}
+
+static void gmc_v6_0_enable_mc_mgcg(struct amdgpu_device *adev,
+				    bool enable)
+{
+	int i;
+	u32 orig, data;
+
+	for (i = 0; i < ARRAY_SIZE(mc_cg_registers); i++) {
+		orig = data = RREG32(mc_cg_registers[i]);
+		if (enable && (adev->cg_flags & AMDGPU_CG_SUPPORT_MC_MGCG))
+			data |= mc_cg_en[i];
+		else
+			data &= ~mc_cg_en[i];
+		if (data != orig)
+			WREG32(mc_cg_registers[i], data);
+	}
+}
+
+static void gmc_v6_0_enable_bif_mgls(struct amdgpu_device *adev,
+				     bool enable)
+{
+	u32 orig, data;
+
+	orig = data = RREG32_PCIE(ixPCIE_CNTL2);
+
+	if (enable && (adev->cg_flags & AMDGPU_CG_SUPPORT_BIF_LS)) {
+		data = REG_SET_FIELD(data, PCIE_CNTL2, SLV_MEM_LS_EN, 1);
+		data = REG_SET_FIELD(data, PCIE_CNTL2, MST_MEM_LS_EN, 1);
+		data = REG_SET_FIELD(data, PCIE_CNTL2, REPLAY_MEM_LS_EN, 1);
+		data = REG_SET_FIELD(data, PCIE_CNTL2, SLV_MEM_AGGRESSIVE_LS_EN, 1);
+	} else {
+		data = REG_SET_FIELD(data, PCIE_CNTL2, SLV_MEM_LS_EN, 0);
+		data = REG_SET_FIELD(data, PCIE_CNTL2, MST_MEM_LS_EN, 0);
+		data = REG_SET_FIELD(data, PCIE_CNTL2, REPLAY_MEM_LS_EN, 0);
+		data = REG_SET_FIELD(data, PCIE_CNTL2, SLV_MEM_AGGRESSIVE_LS_EN, 0);
+	}
+
+	if (orig != data)
+		WREG32_PCIE(ixPCIE_CNTL2, data);
+}
+
+static void gmc_v6_0_enable_hdp_mgcg(struct amdgpu_device *adev,
+				     bool enable)
+{
+	u32 orig, data;
+
+	orig = data = RREG32(HDP_HOST_PATH_CNTL);
+
+	if (enable && (adev->cg_flags & AMDGPU_CG_SUPPORT_HDP_MGCG))
+		data = REG_SET_FIELD(data, HDP_HOST_PATH_CNTL, CLOCK_GATING_DIS, 0);
+	else
+		data = REG_SET_FIELD(data, HDP_HOST_PATH_CNTL, CLOCK_GATING_DIS, 1);
+
+	if (orig != data)
+		WREG32(HDP_HOST_PATH_CNTL, data);
+}
+
+static void gmc_v6_0_enable_hdp_ls(struct amdgpu_device *adev,
+				   bool enable)
+{
+	u32 orig, data;
+
+	orig = data = RREG32(HDP_MEM_POWER_LS);
+
+	if (enable && (adev->cg_flags & AMDGPU_CG_SUPPORT_HDP_LS))
+		data = REG_SET_FIELD(data, HDP_MEM_POWER_LS, LS_ENABLE, 1);
+	else
+		data = REG_SET_FIELD(data, HDP_MEM_POWER_LS, LS_ENABLE, 0);
+
+	if (orig != data)
+		WREG32(HDP_MEM_POWER_LS, data);
+}
+*/
+
+static int gmc_v6_0_convert_vram_type(int mc_seq_vram_type)
+{
+	switch (mc_seq_vram_type) {
+	case MC_SEQ_MISC0__MT__GDDR1:
+		return AMDGPU_VRAM_TYPE_GDDR1;
+	case MC_SEQ_MISC0__MT__DDR2:
+		return AMDGPU_VRAM_TYPE_DDR2;
+	case MC_SEQ_MISC0__MT__GDDR3:
+		return AMDGPU_VRAM_TYPE_GDDR3;
+	case MC_SEQ_MISC0__MT__GDDR4:
+		return AMDGPU_VRAM_TYPE_GDDR4;
+	case MC_SEQ_MISC0__MT__GDDR5:
+		return AMDGPU_VRAM_TYPE_GDDR5;
+	case MC_SEQ_MISC0__MT__DDR3:
+		return AMDGPU_VRAM_TYPE_DDR3;
+	default:
+		return AMDGPU_VRAM_TYPE_UNKNOWN;
+	}
+}
+
+static int gmc_v6_0_early_init(void *handle)
+{
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+
+	gmc_v6_0_set_gart_funcs(adev);
+	gmc_v6_0_set_irq_funcs(adev);
+
+	if (adev->flags & AMD_IS_APU) {
+		adev->mc.vram_type = AMDGPU_VRAM_TYPE_UNKNOWN;
+	} else {
+		u32 tmp = RREG32(MC_SEQ_MISC0);
+		tmp &= MC_SEQ_MISC0__MT__MASK;
+		adev->mc.vram_type = gmc_v6_0_convert_vram_type(tmp);
+	}
+
+	return 0;
+}
+
+static int gmc_v6_0_late_init(void *handle)
+{
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+
+	return amdgpu_irq_get(adev, &adev->mc.vm_fault, 0);
+}
+
+static int gmc_v6_0_sw_init(void *handle)
+{
+	int r;
+	int dma_bits;
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+
+	r = amdgpu_irq_add_id(adev, 146, &adev->mc.vm_fault);
+	if (r)
+		return r;
+
+	r = amdgpu_irq_add_id(adev, 147, &adev->mc.vm_fault);
+	if (r)
+		return r;
+
+	adev->vm_manager.max_pfn = amdgpu_vm_size << 18;
+
+	adev->mc.mc_mask = 0xffffffffffULL;
+
+	adev->need_dma32 = false;
+	dma_bits = adev->need_dma32 ? 32 : 40;
+	r = pci_set_dma_mask(adev->pdev, DMA_BIT_MASK(dma_bits));
+	if (r) {
+		adev->need_dma32 = true;
+		dma_bits = 32;
+		printk(KERN_WARNING "amdgpu: No suitable DMA available.\n");
+	}
+	r = pci_set_consistent_dma_mask(adev->pdev, DMA_BIT_MASK(dma_bits));
+	if (r) {
+		pci_set_consistent_dma_mask(adev->pdev, DMA_BIT_MASK(32));
+		printk(KERN_WARNING "amdgpu: No coherent DMA available.\n");
+	}
+
+	r = gmc_v6_0_init_microcode(adev);
+	if (r) {
+		DRM_ERROR("Failed to load mc firmware!\n");
+		return r;
+	}
+
+	r = amdgpu_ttm_global_init(adev);
+	if (r) {
+		return r;
+	}
+
+	r = gmc_v6_0_mc_init(adev);
+	if (r)
+		return r;
+
+	r = amdgpu_bo_init(adev);
+	if (r)
+		return r;
+
+	r = gmc_v6_0_gart_init(adev);
+	if (r)
+		return r;
+
+	if (!adev->vm_manager.enabled) {
+		r = gmc_v6_0_vm_init(adev);
+		if (r) {
+			dev_err(adev->dev, "vm manager initialization failed (%d).\n", r);
+			return r;
+		}
+		adev->vm_manager.enabled = true;
+	}
+
+	return r;
+}
+
+static int gmc_v6_0_sw_fini(void *handle)
+{
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+
+	if (adev->vm_manager.enabled) {
+		gmc_v6_0_vm_fini(adev);
+		adev->vm_manager.enabled = false;
+	}
+	gmc_v6_0_gart_fini(adev);
+	amdgpu_gem_force_release(adev);
+	amdgpu_bo_fini(adev);
+
+	return 0;
+}
+
+static int gmc_v6_0_hw_init(void *handle)
+{
+	int r;
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+
+	gmc_v6_0_mc_program(adev);
+
+	if (!(adev->flags & AMD_IS_APU)) {
+		r = gmc_v6_0_mc_load_microcode(adev);
+		if (r) {
+			DRM_ERROR("Failed to load MC firmware!\n");
+			return r;
+		}
+	}
+
+	r = gmc_v6_0_gart_enable(adev);
+	if (r)
+		return r;
+
+	return r;
+}
+
+static int gmc_v6_0_hw_fini(void *handle)
+{
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+
+	amdgpu_irq_put(adev, &adev->mc.vm_fault, 0);
+	gmc_v6_0_gart_disable(adev);
+
+	return 0;
+}
+
+static int gmc_v6_0_suspend(void *handle)
+{
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+
+	if (adev->vm_manager.enabled) {
+		gmc_v6_0_vm_fini(adev);
+		adev->vm_manager.enabled = false;
+	}
+	gmc_v6_0_hw_fini(adev);
+
+	return 0;
+}
+
+static int gmc_v6_0_resume(void *handle)
+{
+	int r;
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+
+	r = gmc_v6_0_hw_init(adev);
+	if (r)
+		return r;
+
+	if (!adev->vm_manager.enabled) {
+		r = gmc_v6_0_vm_init(adev);
+		if (r) {
+			dev_err(adev->dev, "vm manager initialization failed (%d).\n", r);
+			return r;
+		}
+		adev->vm_manager.enabled = true;
+	}
+
+	return r;
+}
+
+static bool gmc_v6_0_is_idle(void *handle)
+{
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+	u32 tmp = RREG32(SRBM_STATUS);
+
+	if (tmp & (SRBM_STATUS__MCB_BUSY_MASK | SRBM_STATUS__MCB_NON_DISPLAY_BUSY_MASK |
+		   SRBM_STATUS__MCC_BUSY_MASK | SRBM_STATUS__MCD_BUSY_MASK | SRBM_STATUS__VMC_BUSY_MASK))
+		return false;
+
+	return true;
+}
+
+static int gmc_v6_0_wait_for_idle(void *handle)
+{
+	unsigned i;
+	u32 tmp;
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+
+	for (i = 0; i < adev->usec_timeout; i++) {
+		tmp = RREG32(SRBM_STATUS) & (SRBM_STATUS__MCB_BUSY_MASK |
+					       SRBM_STATUS__MCB_NON_DISPLAY_BUSY_MASK |
+					       SRBM_STATUS__MCC_BUSY_MASK |
+					       SRBM_STATUS__MCD_BUSY_MASK |
+					       SRBM_STATUS__VMC_BUSY_MASK);
+		if (!tmp)
+			return 0;
+		udelay(1);
+	}
+	return -ETIMEDOUT;
+
+}
+
+static int gmc_v6_0_soft_reset(void *handle)
+{
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+	struct amdgpu_mode_mc_save save;
+	u32 srbm_soft_reset = 0;
+	u32 tmp = RREG32(SRBM_STATUS);
+
+	if (tmp & SRBM_STATUS__VMC_BUSY_MASK)
+		srbm_soft_reset = REG_SET_FIELD(srbm_soft_reset,
+						mmSRBM_SOFT_RESET, xxSOFT_RESET_VMC, 1);
+
+	if (tmp & (SRBM_STATUS__MCB_BUSY_MASK | SRBM_STATUS__MCB_NON_DISPLAY_BUSY_MASK |
+		   SRBM_STATUS__MCC_BUSY_MASK | SRBM_STATUS__MCD_BUSY_MASK)) {
+		if (!(adev->flags & AMD_IS_APU))
+			srbm_soft_reset = REG_SET_FIELD(srbm_soft_reset,
+							mmSRBM_SOFT_RESET, xxSOFT_RESET_MC, 1);
+	}
+
+	if (srbm_soft_reset) {
+		gmc_v6_0_mc_stop(adev, &save);
+		if (gmc_v6_0_wait_for_idle(adev)) {
+			dev_warn(adev->dev, "Wait for GMC idle timed out !\n");
+		}
+
+
+		tmp = RREG32(SRBM_SOFT_RESET);
+		tmp |= srbm_soft_reset;
+		dev_info(adev->dev, "SRBM_SOFT_RESET=0x%08X\n", tmp);
+		WREG32(SRBM_SOFT_RESET, tmp);
+		tmp = RREG32(SRBM_SOFT_RESET);
+
+		udelay(50);
+
+		tmp &= ~srbm_soft_reset;
+		WREG32(SRBM_SOFT_RESET, tmp);
+		tmp = RREG32(SRBM_SOFT_RESET);
+
+		udelay(50);
+
+		gmc_v6_0_mc_resume(adev, &save);
+		udelay(50);
+	}
+
+	return 0;
+}
+
+static int gmc_v6_0_vm_fault_interrupt_state(struct amdgpu_device *adev,
+					     struct amdgpu_irq_src *src,
+					     unsigned type,
+					     enum amdgpu_interrupt_state state)
+{
+	u32 tmp;
+	u32 bits = (VM_CONTEXT1_CNTL__RANGE_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK |
+		    VM_CONTEXT1_CNTL__DUMMY_PAGE_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK |
+		    VM_CONTEXT1_CNTL__PDE0_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK |
+		    VM_CONTEXT1_CNTL__VALID_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK |
+		    VM_CONTEXT1_CNTL__READ_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK |
+		    VM_CONTEXT1_CNTL__WRITE_PROTECTION_FAULT_ENABLE_INTERRUPT_MASK);
+
+	switch (state) {
+	case AMDGPU_IRQ_STATE_DISABLE:
+		tmp = RREG32(VM_CONTEXT0_CNTL);
+		tmp &= ~bits;
+		WREG32(VM_CONTEXT0_CNTL, tmp);
+		tmp = RREG32(VM_CONTEXT1_CNTL);
+		tmp &= ~bits;
+		WREG32(VM_CONTEXT1_CNTL, tmp);
+		break;
+	case AMDGPU_IRQ_STATE_ENABLE:
+		tmp = RREG32(VM_CONTEXT0_CNTL);
+		tmp |= bits;
+		WREG32(VM_CONTEXT0_CNTL, tmp);
+		tmp = RREG32(VM_CONTEXT1_CNTL);
+		tmp |= bits;
+		WREG32(VM_CONTEXT1_CNTL, tmp);
+		break;
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static int gmc_v6_0_process_interrupt(struct amdgpu_device *adev,
+				      struct amdgpu_irq_src *source,
+				      struct amdgpu_iv_entry *entry)
+{
+	u32 addr, status;
+
+	addr = RREG32(VM_CONTEXT1_PROTECTION_FAULT_ADDR);
+	status = RREG32(VM_CONTEXT1_PROTECTION_FAULT_STATUS);
+	WREG32_P(VM_CONTEXT1_CNTL2, 1, ~1);
+
+	if (!addr && !status)
+		return 0;
+
+	if (amdgpu_vm_fault_stop == AMDGPU_VM_FAULT_STOP_FIRST)
+		gmc_v6_0_set_fault_enable_default(adev, false);
+
+	dev_err(adev->dev, "GPU fault detected: %d 0x%08x\n",
+		entry->src_id, entry->src_data);
+	dev_err(adev->dev, "  VM_CONTEXT1_PROTECTION_FAULT_ADDR   0x%08X\n",
+		addr);
+	dev_err(adev->dev, "  VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x%08X\n",
+		status);
+	gmc_v6_0_vm_decode_fault(adev, status, addr, 0);
+
+	return 0;
+}
+
+static int gmc_v6_0_set_clockgating_state(void *handle,
+					  enum amd_clockgating_state state)
+{
+	return 0;
+}
+
+static int gmc_v6_0_set_powergating_state(void *handle,
+					  enum amd_powergating_state state)
+{
+	return 0;
+}
+
+const struct amd_ip_funcs gmc_v6_0_ip_funcs = {
+	.name = "gmc_v6_0",
+	.early_init = gmc_v6_0_early_init,
+	.late_init = gmc_v6_0_late_init,
+	.sw_init = gmc_v6_0_sw_init,
+	.sw_fini = gmc_v6_0_sw_fini,
+	.hw_init = gmc_v6_0_hw_init,
+	.hw_fini = gmc_v6_0_hw_fini,
+	.suspend = gmc_v6_0_suspend,
+	.resume = gmc_v6_0_resume,
+	.is_idle = gmc_v6_0_is_idle,
+	.wait_for_idle = gmc_v6_0_wait_for_idle,
+	.soft_reset = gmc_v6_0_soft_reset,
+	.set_clockgating_state = gmc_v6_0_set_clockgating_state,
+	.set_powergating_state = gmc_v6_0_set_powergating_state,
+};
+
+static const struct amdgpu_gart_funcs gmc_v6_0_gart_funcs = {
+	.flush_gpu_tlb = gmc_v6_0_gart_flush_gpu_tlb,
+	.set_pte_pde = gmc_v6_0_gart_set_pte_pde,
+};
+
+static const struct amdgpu_irq_src_funcs gmc_v6_0_irq_funcs = {
+	.set = gmc_v6_0_vm_fault_interrupt_state,
+	.process = gmc_v6_0_process_interrupt,
+};
+
+static void gmc_v6_0_set_gart_funcs(struct amdgpu_device *adev)
+{
+	if (adev->gart.gart_funcs == NULL)
+		adev->gart.gart_funcs = &gmc_v6_0_gart_funcs;
+}
+
+static void gmc_v6_0_set_irq_funcs(struct amdgpu_device *adev)
+{
+	adev->mc.vm_fault.num_types = 1;
+	adev->mc.vm_fault.funcs = &gmc_v6_0_irq_funcs;
+}
+

drivers/gpu/drm/amd/amdgpu/gmc_v6_0.h

+/*
+ * Copyright 2015 Advanced Micro Devices, Inc.
+ *
+ * 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.
+ *
+ */
+
+#ifndef __GMC_V6_0_H__
+#define __GMC_V6_0_H__
+
+extern const struct amd_ip_funcs gmc_v6_0_ip_funcs;
+
+#endif