1 files changed, 749 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
new file mode 100644
index 000000000..d6f295103
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
@@ -0,0 +1,749 @@
+/*
+ * Copyright 2016 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/module.h>
+
+#include <drm/drm_drv.h>
+
+#include "amdgpu.h"
+#include "amdgpu_ras.h"
+#include "vi.h"
+#include "soc15.h"
+#include "nv.h"
+
+#define POPULATE_UCODE_INFO(vf2pf_info, ucode, ver) \
+	do { \
+		vf2pf_info->ucode_info[ucode].id = ucode; \
+		vf2pf_info->ucode_info[ucode].version = ver; \
+	} while (0)
+
+bool amdgpu_virt_mmio_blocked(struct amdgpu_device *adev)
+{
+	/* By now all MMIO pages except mailbox are blocked */
+	/* if blocking is enabled in hypervisor. Choose the */
+	/* SCRATCH_REG0 to test. */
+	return RREG32_NO_KIQ(0xc040) == 0xffffffff;
+}
+
+void amdgpu_virt_init_setting(struct amdgpu_device *adev)
+{
+	/* enable virtual display */
+	if (adev->mode_info.num_crtc == 0)
+		adev->mode_info.num_crtc = 1;
+	adev->enable_virtual_display = true;
+	adev_to_drm(adev)->driver->driver_features &= ~DRIVER_ATOMIC;
+	adev->cg_flags = 0;
+	adev->pg_flags = 0;
+}
+
+void amdgpu_virt_kiq_reg_write_reg_wait(struct amdgpu_device *adev,
+					uint32_t reg0, uint32_t reg1,
+					uint32_t ref, uint32_t mask)
+{
+	struct amdgpu_kiq *kiq = &adev->gfx.kiq;
+	struct amdgpu_ring *ring = &kiq->ring;
+	signed long r, cnt = 0;
+	unsigned long flags;
+	uint32_t seq;
+
+	spin_lock_irqsave(&kiq->ring_lock, flags);
+	amdgpu_ring_alloc(ring, 32);
+	amdgpu_ring_emit_reg_write_reg_wait(ring, reg0, reg1,
+					    ref, mask);
+	r = amdgpu_fence_emit_polling(ring, &seq, MAX_KIQ_REG_WAIT);
+	if (r)
+		goto failed_undo;
+
+	amdgpu_ring_commit(ring);
+	spin_unlock_irqrestore(&kiq->ring_lock, flags);
+
+	r = amdgpu_fence_wait_polling(ring, seq, MAX_KIQ_REG_WAIT);
+
+	/* don't wait anymore for IRQ context */
+	if (r < 1 && in_interrupt())
+		goto failed_kiq;
+
+	might_sleep();
+	while (r < 1 && cnt++ < MAX_KIQ_REG_TRY) {
+
+		msleep(MAX_KIQ_REG_BAILOUT_INTERVAL);
+		r = amdgpu_fence_wait_polling(ring, seq, MAX_KIQ_REG_WAIT);
+	}
+
+	if (cnt > MAX_KIQ_REG_TRY)
+		goto failed_kiq;
+
+	return;
+
+failed_undo:
+	amdgpu_ring_undo(ring);
+	spin_unlock_irqrestore(&kiq->ring_lock, flags);
+failed_kiq:
+	dev_err(adev->dev, "failed to write reg %x wait reg %x\n", reg0, reg1);
+}
+
+/**
+ * amdgpu_virt_request_full_gpu() - request full gpu access
+ * @amdgpu:	amdgpu device.
+ * @init:	is driver init time.
+ * When start to init/fini driver, first need to request full gpu access.
+ * Return: Zero if request success, otherwise will return error.
+ */
+int amdgpu_virt_request_full_gpu(struct amdgpu_device *adev, bool init)
+{
+	struct amdgpu_virt *virt = &adev->virt;
+	int r;
+
+	if (virt->ops && virt->ops->req_full_gpu) {
+		r = virt->ops->req_full_gpu(adev, init);
+		if (r)
+			return r;
+
+		adev->virt.caps &= ~AMDGPU_SRIOV_CAPS_RUNTIME;
+	}
+
+	return 0;
+}
+
+/**
+ * amdgpu_virt_release_full_gpu() - release full gpu access
+ * @amdgpu:	amdgpu device.
+ * @init:	is driver init time.
+ * When finishing driver init/fini, need to release full gpu access.
+ * Return: Zero if release success, otherwise will returen error.
+ */
+int amdgpu_virt_release_full_gpu(struct amdgpu_device *adev, bool init)
+{
+	struct amdgpu_virt *virt = &adev->virt;
+	int r;
+
+	if (virt->ops && virt->ops->rel_full_gpu) {
+		r = virt->ops->rel_full_gpu(adev, init);
+		if (r)
+			return r;
+
+		adev->virt.caps |= AMDGPU_SRIOV_CAPS_RUNTIME;
+	}
+	return 0;
+}
+
+/**
+ * amdgpu_virt_reset_gpu() - reset gpu
+ * @amdgpu:	amdgpu device.
+ * Send reset command to GPU hypervisor to reset GPU that VM is using
+ * Return: Zero if reset success, otherwise will return error.
+ */
+int amdgpu_virt_reset_gpu(struct amdgpu_device *adev)
+{
+	struct amdgpu_virt *virt = &adev->virt;
+	int r;
+
+	if (virt->ops && virt->ops->reset_gpu) {
+		r = virt->ops->reset_gpu(adev);
+		if (r)
+			return r;
+
+		adev->virt.caps &= ~AMDGPU_SRIOV_CAPS_RUNTIME;
+	}
+
+	return 0;
+}
+
+void amdgpu_virt_request_init_data(struct amdgpu_device *adev)
+{
+	struct amdgpu_virt *virt = &adev->virt;
+
+	if (virt->ops && virt->ops->req_init_data)
+		virt->ops->req_init_data(adev);
+
+	if (adev->virt.req_init_data_ver > 0)
+		DRM_INFO("host supports REQ_INIT_DATA handshake\n");
+	else
+		DRM_WARN("host doesn't support REQ_INIT_DATA handshake\n");
+}
+
+/**
+ * amdgpu_virt_wait_reset() - wait for reset gpu completed
+ * @amdgpu:	amdgpu device.
+ * Wait for GPU reset completed.
+ * Return: Zero if reset success, otherwise will return error.
+ */
+int amdgpu_virt_wait_reset(struct amdgpu_device *adev)
+{
+	struct amdgpu_virt *virt = &adev->virt;
+
+	if (!virt->ops || !virt->ops->wait_reset)
+		return -EINVAL;
+
+	return virt->ops->wait_reset(adev);
+}
+
+/**
+ * amdgpu_virt_alloc_mm_table() - alloc memory for mm table
+ * @amdgpu:	amdgpu device.
+ * MM table is used by UVD and VCE for its initialization
+ * Return: Zero if allocate success.
+ */
+int amdgpu_virt_alloc_mm_table(struct amdgpu_device *adev)
+{
+	int r;
+
+	if (!amdgpu_sriov_vf(adev) || adev->virt.mm_table.gpu_addr)
+		return 0;
+
+	r = amdgpu_bo_create_kernel(adev, PAGE_SIZE, PAGE_SIZE,
+				    AMDGPU_GEM_DOMAIN_VRAM,
+				    &adev->virt.mm_table.bo,
+				    &adev->virt.mm_table.gpu_addr,
+				    (void *)&adev->virt.mm_table.cpu_addr);
+	if (r) {
+		DRM_ERROR("failed to alloc mm table and error = %d.\n", r);
+		return r;
+	}
+
+	memset((void *)adev->virt.mm_table.cpu_addr, 0, PAGE_SIZE);
+	DRM_INFO("MM table gpu addr = 0x%llx, cpu addr = %p.\n",
+		 adev->virt.mm_table.gpu_addr,
+		 adev->virt.mm_table.cpu_addr);
+	return 0;
+}
+
+/**
+ * amdgpu_virt_free_mm_table() - free mm table memory
+ * @amdgpu:	amdgpu device.
+ * Free MM table memory
+ */
+void amdgpu_virt_free_mm_table(struct amdgpu_device *adev)
+{
+	if (!amdgpu_sriov_vf(adev) || !adev->virt.mm_table.gpu_addr)
+		return;
+
+	amdgpu_bo_free_kernel(&adev->virt.mm_table.bo,
+			      &adev->virt.mm_table.gpu_addr,
+			      (void *)&adev->virt.mm_table.cpu_addr);
+	adev->virt.mm_table.gpu_addr = 0;
+}
+
+
+unsigned int amd_sriov_msg_checksum(void *obj,
+				unsigned long obj_size,
+				unsigned int key,
+				unsigned int checksum)
+{
+	unsigned int ret = key;
+	unsigned long i = 0;
+	unsigned char *pos;
+
+	pos = (char *)obj;
+	/* calculate checksum */
+	for (i = 0; i < obj_size; ++i)
+		ret += *(pos + i);
+	/* minus the checksum itself */
+	pos = (char *)&checksum;
+	for (i = 0; i < sizeof(checksum); ++i)
+		ret -= *(pos + i);
+	return ret;
+}
+
+static int amdgpu_virt_init_ras_err_handler_data(struct amdgpu_device *adev)
+{
+	struct amdgpu_virt *virt = &adev->virt;
+	struct amdgpu_virt_ras_err_handler_data **data = &virt->virt_eh_data;
+	/* GPU will be marked bad on host if bp count more then 10,
+	 * so alloc 512 is enough.
+	 */
+	unsigned int align_space = 512;
+	void *bps = NULL;
+	struct amdgpu_bo **bps_bo = NULL;
+
+	*data = kmalloc(sizeof(struct amdgpu_virt_ras_err_handler_data), GFP_KERNEL);
+	if (!*data)
+		return -ENOMEM;
+
+	bps = kmalloc(align_space * sizeof((*data)->bps), GFP_KERNEL);
+	bps_bo = kmalloc(align_space * sizeof((*data)->bps_bo), GFP_KERNEL);
+
+	if (!bps || !bps_bo) {
+		kfree(bps);
+		kfree(bps_bo);
+		kfree(*data);
+		return -ENOMEM;
+	}
+
+	(*data)->bps = bps;
+	(*data)->bps_bo = bps_bo;
+	(*data)->count = 0;
+	(*data)->last_reserved = 0;
+
+	virt->ras_init_done = true;
+
+	return 0;
+}
+
+static void amdgpu_virt_ras_release_bp(struct amdgpu_device *adev)
+{
+	struct amdgpu_virt *virt = &adev->virt;
+	struct amdgpu_virt_ras_err_handler_data *data = virt->virt_eh_data;
+	struct amdgpu_bo *bo;
+	int i;
+
+	if (!data)
+		return;
+
+	for (i = data->last_reserved - 1; i >= 0; i--) {
+		bo = data->bps_bo[i];
+		amdgpu_bo_free_kernel(&bo, NULL, NULL);
+		data->bps_bo[i] = bo;
+		data->last_reserved = i;
+	}
+}
+
+void amdgpu_virt_release_ras_err_handler_data(struct amdgpu_device *adev)
+{
+	struct amdgpu_virt *virt = &adev->virt;
+	struct amdgpu_virt_ras_err_handler_data *data = virt->virt_eh_data;
+
+	virt->ras_init_done = false;
+
+	if (!data)
+		return;
+
+	amdgpu_virt_ras_release_bp(adev);
+
+	kfree(data->bps);
+	kfree(data->bps_bo);
+	kfree(data);
+	virt->virt_eh_data = NULL;
+}
+
+static void amdgpu_virt_ras_add_bps(struct amdgpu_device *adev,
+		struct eeprom_table_record *bps, int pages)
+{
+	struct amdgpu_virt *virt = &adev->virt;
+	struct amdgpu_virt_ras_err_handler_data *data = virt->virt_eh_data;
+
+	if (!data)
+		return;
+
+	memcpy(&data->bps[data->count], bps, pages * sizeof(*data->bps));
+	data->count += pages;
+}
+
+static void amdgpu_virt_ras_reserve_bps(struct amdgpu_device *adev)
+{
+	struct amdgpu_virt *virt = &adev->virt;
+	struct amdgpu_virt_ras_err_handler_data *data = virt->virt_eh_data;
+	struct amdgpu_bo *bo = NULL;
+	uint64_t bp;
+	int i;
+
+	if (!data)
+		return;
+
+	for (i = data->last_reserved; i < data->count; i++) {
+		bp = data->bps[i].retired_page;
+
+		/* There are two cases of reserve error should be ignored:
+		 * 1) a ras bad page has been allocated (used by someone);
+		 * 2) a ras bad page has been reserved (duplicate error injection
+		 *    for one page);
+		 */
+		if (amdgpu_bo_create_kernel_at(adev, bp << AMDGPU_GPU_PAGE_SHIFT,
+					       AMDGPU_GPU_PAGE_SIZE,
+					       AMDGPU_GEM_DOMAIN_VRAM,
+					       &bo, NULL))
+			DRM_DEBUG("RAS WARN: reserve vram for retired page %llx fail\n", bp);
+
+		data->bps_bo[i] = bo;
+		data->last_reserved = i + 1;
+		bo = NULL;
+	}
+}
+
+static bool amdgpu_virt_ras_check_bad_page(struct amdgpu_device *adev,
+		uint64_t retired_page)
+{
+	struct amdgpu_virt *virt = &adev->virt;
+	struct amdgpu_virt_ras_err_handler_data *data = virt->virt_eh_data;
+	int i;
+
+	if (!data)
+		return true;
+
+	for (i = 0; i < data->count; i++)
+		if (retired_page == data->bps[i].retired_page)
+			return true;
+
+	return false;
+}
+
+static void amdgpu_virt_add_bad_page(struct amdgpu_device *adev,
+		uint64_t bp_block_offset, uint32_t bp_block_size)
+{
+	struct eeprom_table_record bp;
+	uint64_t retired_page;
+	uint32_t bp_idx, bp_cnt;
+
+	if (bp_block_size) {
+		bp_cnt = bp_block_size / sizeof(uint64_t);
+		for (bp_idx = 0; bp_idx < bp_cnt; bp_idx++) {
+			retired_page = *(uint64_t *)(adev->mman.fw_vram_usage_va +
+					bp_block_offset + bp_idx * sizeof(uint64_t));
+			bp.retired_page = retired_page;
+
+			if (amdgpu_virt_ras_check_bad_page(adev, retired_page))
+				continue;
+
+			amdgpu_virt_ras_add_bps(adev, &bp, 1);
+
+			amdgpu_virt_ras_reserve_bps(adev);
+		}
+	}
+}
+
+static int amdgpu_virt_read_pf2vf_data(struct amdgpu_device *adev)
+{
+	struct amd_sriov_msg_pf2vf_info_header *pf2vf_info = adev->virt.fw_reserve.p_pf2vf;
+	uint32_t checksum;
+	uint32_t checkval;
+
+	if (adev->virt.fw_reserve.p_pf2vf == NULL)
+		return -EINVAL;
+
+	if (pf2vf_info->size > 1024) {
+		DRM_ERROR("invalid pf2vf message size\n");
+		return -EINVAL;
+	}
+
+	switch (pf2vf_info->version) {
+	case 1:
+		checksum = ((struct amdgim_pf2vf_info_v1 *)pf2vf_info)->checksum;
+		checkval = amd_sriov_msg_checksum(
+			adev->virt.fw_reserve.p_pf2vf, pf2vf_info->size,
+			adev->virt.fw_reserve.checksum_key, checksum);
+		if (checksum != checkval) {
+			DRM_ERROR("invalid pf2vf message\n");
+			return -EINVAL;
+		}
+
+		adev->virt.gim_feature =
+			((struct amdgim_pf2vf_info_v1 *)pf2vf_info)->feature_flags;
+		break;
+	case 2:
+		/* TODO: missing key, need to add it later */
+		checksum = ((struct amd_sriov_msg_pf2vf_info *)pf2vf_info)->checksum;
+		checkval = amd_sriov_msg_checksum(
+			adev->virt.fw_reserve.p_pf2vf, pf2vf_info->size,
+			0, checksum);
+		if (checksum != checkval) {
+			DRM_ERROR("invalid pf2vf message\n");
+			return -EINVAL;
+		}
+
+		adev->virt.vf2pf_update_interval_ms =
+			((struct amd_sriov_msg_pf2vf_info *)pf2vf_info)->vf2pf_update_interval_ms;
+		adev->virt.gim_feature =
+			((struct amd_sriov_msg_pf2vf_info *)pf2vf_info)->feature_flags.all;
+
+		break;
+	default:
+		DRM_ERROR("invalid pf2vf version\n");
+		return -EINVAL;
+	}
+
+	/* correct too large or too little interval value */
+	if (adev->virt.vf2pf_update_interval_ms < 200 || adev->virt.vf2pf_update_interval_ms > 10000)
+		adev->virt.vf2pf_update_interval_ms = 2000;
+
+	return 0;
+}
+
+static void amdgpu_virt_populate_vf2pf_ucode_info(struct amdgpu_device *adev)
+{
+	struct amd_sriov_msg_vf2pf_info *vf2pf_info;
+	vf2pf_info = (struct amd_sriov_msg_vf2pf_info *) adev->virt.fw_reserve.p_vf2pf;
+
+	if (adev->virt.fw_reserve.p_vf2pf == NULL)
+		return;
+
+	POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_VCE,      adev->vce.fw_version);
+	POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_UVD,      adev->uvd.fw_version);
+	POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_MC,       adev->gmc.fw_version);
+	POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_ME,       adev->gfx.me_fw_version);
+	POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_PFP,      adev->gfx.pfp_fw_version);
+	POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_CE,       adev->gfx.ce_fw_version);
+	POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_RLC,      adev->gfx.rlc_fw_version);
+	POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_RLC_SRLC, adev->gfx.rlc_srlc_fw_version);
+	POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_RLC_SRLG, adev->gfx.rlc_srlg_fw_version);
+	POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_RLC_SRLS, adev->gfx.rlc_srls_fw_version);
+	POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_MEC,      adev->gfx.mec_fw_version);
+	POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_MEC2,     adev->gfx.mec2_fw_version);
+	POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_SOS,      adev->psp.sos_fw_version);
+	POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_ASD,      adev->psp.asd_fw_version);
+	POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_TA_RAS,   adev->psp.ta_ras_ucode_version);
+	POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_TA_XGMI,  adev->psp.ta_xgmi_ucode_version);
+	POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_SMC,      adev->pm.fw_version);
+	POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_SDMA,     adev->sdma.instance[0].fw_version);
+	POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_SDMA2,    adev->sdma.instance[1].fw_version);
+	POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_VCN,      adev->vcn.fw_version);
+	POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_DMCU,     adev->dm.dmcu_fw_version);
+}
+
+static int amdgpu_virt_write_vf2pf_data(struct amdgpu_device *adev)
+{
+	struct amd_sriov_msg_vf2pf_info *vf2pf_info;
+	struct ttm_resource_manager *vram_man = ttm_manager_type(&adev->mman.bdev, TTM_PL_VRAM);
+
+	vf2pf_info = (struct amd_sriov_msg_vf2pf_info *) adev->virt.fw_reserve.p_vf2pf;
+
+	if (adev->virt.fw_reserve.p_vf2pf == NULL)
+		return -EINVAL;
+
+	memset(vf2pf_info, 0, sizeof(struct amd_sriov_msg_vf2pf_info));
+
+	vf2pf_info->header.size = sizeof(struct amd_sriov_msg_vf2pf_info);
+	vf2pf_info->header.version = AMD_SRIOV_MSG_FW_VRAM_VF2PF_VER;
+
+#ifdef MODULE
+	if (THIS_MODULE->version != NULL)
+		strcpy(vf2pf_info->driver_version, THIS_MODULE->version);
+	else
+#endif
+		strcpy(vf2pf_info->driver_version, "N/A");
+
+	vf2pf_info->pf2vf_version_required = 0; // no requirement, guest understands all
+	vf2pf_info->driver_cert = 0;
+	vf2pf_info->os_info.all = 0;
+
+	vf2pf_info->fb_usage = amdgpu_vram_mgr_usage(vram_man) >> 20;
+	vf2pf_info->fb_vis_usage = amdgpu_vram_mgr_vis_usage(vram_man) >> 20;
+	vf2pf_info->fb_size = adev->gmc.real_vram_size >> 20;
+	vf2pf_info->fb_vis_size = adev->gmc.visible_vram_size >> 20;
+
+	amdgpu_virt_populate_vf2pf_ucode_info(adev);
+
+	/* TODO: read dynamic info */
+	vf2pf_info->gfx_usage = 0;
+	vf2pf_info->compute_usage = 0;
+	vf2pf_info->encode_usage = 0;
+	vf2pf_info->decode_usage = 0;
+
+	vf2pf_info->checksum =
+		amd_sriov_msg_checksum(
+		vf2pf_info, vf2pf_info->header.size, 0, 0);
+
+	return 0;
+}
+
+void amdgpu_virt_update_vf2pf_work_item(struct work_struct *work)
+{
+	struct amdgpu_device *adev = container_of(work, struct amdgpu_device, virt.vf2pf_work.work);
+	int ret;
+
+	ret = amdgpu_virt_read_pf2vf_data(adev);
+	if (ret)
+		goto out;
+	amdgpu_virt_write_vf2pf_data(adev);
+
+out:
+	schedule_delayed_work(&(adev->virt.vf2pf_work), adev->virt.vf2pf_update_interval_ms);
+}
+
+void amdgpu_virt_fini_data_exchange(struct amdgpu_device *adev)
+{
+	if (adev->virt.vf2pf_update_interval_ms != 0) {
+		DRM_INFO("clean up the vf2pf work item\n");
+		flush_delayed_work(&adev->virt.vf2pf_work);
+		cancel_delayed_work_sync(&adev->virt.vf2pf_work);
+	}
+}
+
+void amdgpu_virt_init_data_exchange(struct amdgpu_device *adev)
+{
+	adev->virt.fw_reserve.p_pf2vf = NULL;
+	adev->virt.fw_reserve.p_vf2pf = NULL;
+	adev->virt.vf2pf_update_interval_ms = 0;
+
+	if (adev->mman.fw_vram_usage_va != NULL) {
+		/* go through this logic in ip_init and reset to init workqueue*/
+		amdgpu_virt_exchange_data(adev);
+
+		INIT_DELAYED_WORK(&adev->virt.vf2pf_work, amdgpu_virt_update_vf2pf_work_item);
+		schedule_delayed_work(&(adev->virt.vf2pf_work), msecs_to_jiffies(adev->virt.vf2pf_update_interval_ms));
+	} else if (adev->bios != NULL) {
+		/* got through this logic in early init stage to get necessary flags, e.g. rlcg_acc related*/
+		adev->virt.fw_reserve.p_pf2vf =
+			(struct amd_sriov_msg_pf2vf_info_header *)
+			(adev->bios + (AMD_SRIOV_MSG_PF2VF_OFFSET_KB << 10));
+
+		amdgpu_virt_read_pf2vf_data(adev);
+	}
+}
+
+
+void amdgpu_virt_exchange_data(struct amdgpu_device *adev)
+{
+	uint64_t bp_block_offset = 0;
+	uint32_t bp_block_size = 0;
+	struct amd_sriov_msg_pf2vf_info *pf2vf_v2 = NULL;
+
+	if (adev->mman.fw_vram_usage_va != NULL) {
+
+		adev->virt.fw_reserve.p_pf2vf =
+			(struct amd_sriov_msg_pf2vf_info_header *)
+			(adev->mman.fw_vram_usage_va + (AMD_SRIOV_MSG_PF2VF_OFFSET_KB << 10));
+		adev->virt.fw_reserve.p_vf2pf =
+			(struct amd_sriov_msg_vf2pf_info_header *)
+			(adev->mman.fw_vram_usage_va + (AMD_SRIOV_MSG_VF2PF_OFFSET_KB << 10));
+
+		amdgpu_virt_read_pf2vf_data(adev);
+		amdgpu_virt_write_vf2pf_data(adev);
+
+		/* bad page handling for version 2 */
+		if (adev->virt.fw_reserve.p_pf2vf->version == 2) {
+				pf2vf_v2 = (struct amd_sriov_msg_pf2vf_info *)adev->virt.fw_reserve.p_pf2vf;
+
+				bp_block_offset = ((uint64_t)pf2vf_v2->bp_block_offset_low & 0xFFFFFFFF) |
+						((((uint64_t)pf2vf_v2->bp_block_offset_high) << 32) & 0xFFFFFFFF00000000);
+				bp_block_size = pf2vf_v2->bp_block_size;
+
+				if (bp_block_size && !adev->virt.ras_init_done)
+					amdgpu_virt_init_ras_err_handler_data(adev);
+
+				if (adev->virt.ras_init_done)
+					amdgpu_virt_add_bad_page(adev, bp_block_offset, bp_block_size);
+			}
+	}
+}
+
+
+void amdgpu_detect_virtualization(struct amdgpu_device *adev)
+{
+	uint32_t reg;
+
+	switch (adev->asic_type) {
+	case CHIP_TONGA:
+	case CHIP_FIJI:
+		reg = RREG32(mmBIF_IOV_FUNC_IDENTIFIER);
+		break;
+	case CHIP_VEGA10:
+	case CHIP_VEGA20:
+	case CHIP_NAVI10:
+	case CHIP_NAVI12:
+	case CHIP_SIENNA_CICHLID:
+	case CHIP_ARCTURUS:
+		reg = RREG32(mmRCC_IOV_FUNC_IDENTIFIER);
+		break;
+	default: /* other chip doesn't support SRIOV */
+		reg = 0;
+		break;
+	}
+
+	if (reg & 1)
+		adev->virt.caps |= AMDGPU_SRIOV_CAPS_IS_VF;
+
+	if (reg & 0x80000000)
+		adev->virt.caps |= AMDGPU_SRIOV_CAPS_ENABLE_IOV;
+
+	if (!reg) {
+		if (is_virtual_machine())	/* passthrough mode exclus sriov mod */
+			adev->virt.caps |= AMDGPU_PASSTHROUGH_MODE;
+	}
+
+	if (amdgpu_sriov_vf(adev) && adev->asic_type == CHIP_SIENNA_CICHLID)
+		/* VF MMIO access (except mailbox range) from CPU
+		 * will be blocked during sriov runtime
+		 */
+		adev->virt.caps |= AMDGPU_VF_MMIO_ACCESS_PROTECT;
+
+	/* we have the ability to check now */
+	if (amdgpu_sriov_vf(adev)) {
+		switch (adev->asic_type) {
+		case CHIP_TONGA:
+		case CHIP_FIJI:
+			vi_set_virt_ops(adev);
+			break;
+		case CHIP_VEGA10:
+		case CHIP_VEGA20:
+		case CHIP_ARCTURUS:
+			soc15_set_virt_ops(adev);
+			break;
+		case CHIP_NAVI10:
+		case CHIP_NAVI12:
+		case CHIP_SIENNA_CICHLID:
+			nv_set_virt_ops(adev);
+			/* try send GPU_INIT_DATA request to host */
+			amdgpu_virt_request_init_data(adev);
+			break;
+		default: /* other chip doesn't support SRIOV */
+			DRM_ERROR("Unknown asic type: %d!\n", adev->asic_type);
+			break;
+		}
+	}
+}
+
+static bool amdgpu_virt_access_debugfs_is_mmio(struct amdgpu_device *adev)
+{
+	return amdgpu_sriov_is_debug(adev) ? true : false;
+}
+
+static bool amdgpu_virt_access_debugfs_is_kiq(struct amdgpu_device *adev)
+{
+	return amdgpu_sriov_is_normal(adev) ? true : false;
+}
+
+int amdgpu_virt_enable_access_debugfs(struct amdgpu_device *adev)
+{
+	if (!amdgpu_sriov_vf(adev) ||
+	    amdgpu_virt_access_debugfs_is_kiq(adev))
+		return 0;
+
+	if (amdgpu_virt_access_debugfs_is_mmio(adev))
+		adev->virt.caps &= ~AMDGPU_SRIOV_CAPS_RUNTIME;
+	else
+		return -EPERM;
+
+	return 0;
+}
+
+void amdgpu_virt_disable_access_debugfs(struct amdgpu_device *adev)
+{
+	if (amdgpu_sriov_vf(adev))
+		adev->virt.caps |= AMDGPU_SRIOV_CAPS_RUNTIME;
+}
+
+enum amdgpu_sriov_vf_mode amdgpu_virt_get_sriov_vf_mode(struct amdgpu_device *adev)
+{
+	enum amdgpu_sriov_vf_mode mode;
+
+	if (amdgpu_sriov_vf(adev)) {
+		if (amdgpu_sriov_is_pp_one_vf(adev))
+			mode = SRIOV_VF_MODE_ONE_VF;
+		else
+			mode = SRIOV_VF_MODE_MULTI_VF;
+	} else {
+		mode = SRIOV_VF_MODE_BARE_METAL;
+	}
+
+	return mode;
+}