2024y-10m-21d-06h-49m-01s UTC: drm-tip rerere cache update

git version 2.47.0

2 files changed, 0 insertions, 1380 deletions

diff --git a/rr-cache/d52980be8177c91c0cdd3698491039db63f9ed44/postimage b/rr-cache/d52980be8177c91c0cdd3698491039db63f9ed44/postimage
deleted file mode 100644
index 0be4687bfc20..000000000000
--- a/rr-cache/d52980be8177c91c0cdd3698491039db63f9ed44/postimage
+++ /dev/null
@@ -1,687 +0,0 @@
-// SPDX-License-Identifier: MIT
-/*
- * Copyright © 2022 Intel Corporation
- */
-
-#include "xe_gt_pagefault.h"
-
-#include <linux/bitfield.h>
-#include <linux/circ_buf.h>
-
-#include <drm/drm_exec.h>
-#include <drm/drm_managed.h>
-#include <drm/ttm/ttm_execbuf_util.h>
-
-#include "abi/guc_actions_abi.h"
-#include "xe_bo.h"
-#include "xe_gt.h"
-#include "xe_gt_tlb_invalidation.h"
-#include "xe_guc.h"
-#include "xe_guc_ct.h"
-#include "xe_migrate.h"
-#include "xe_trace_bo.h"
-#include "xe_vm.h"
-
-struct pagefault {
-	u64 page_addr;
-	u32 asid;
-	u16 pdata;
-	u8 vfid;
-	u8 access_type;
-	u8 fault_type;
-	u8 fault_level;
-	u8 engine_class;
-	u8 engine_instance;
-	u8 fault_unsuccessful;
-	bool trva_fault;
-};
-
-enum access_type {
-	ACCESS_TYPE_READ = 0,
-	ACCESS_TYPE_WRITE = 1,
-	ACCESS_TYPE_ATOMIC = 2,
-	ACCESS_TYPE_RESERVED = 3,
-};
-
-enum fault_type {
-	NOT_PRESENT = 0,
-	WRITE_ACCESS_VIOLATION = 1,
-	ATOMIC_ACCESS_VIOLATION = 2,
-};
-
-struct acc {
-	u64 va_range_base;
-	u32 asid;
-	u32 sub_granularity;
-	u8 granularity;
-	u8 vfid;
-	u8 access_type;
-	u8 engine_class;
-	u8 engine_instance;
-};
-
-static bool access_is_atomic(enum access_type access_type)
-{
-	return access_type == ACCESS_TYPE_ATOMIC;
-}
-
-static bool vma_is_valid(struct xe_tile *tile, struct xe_vma *vma)
-{
-	return BIT(tile->id) & vma->tile_present &&
-		!(BIT(tile->id) & vma->tile_invalidated);
-}
-
-static bool vma_matches(struct xe_vma *vma, u64 page_addr)
-{
-	if (page_addr > xe_vma_end(vma) - 1 ||
-	    page_addr + SZ_4K - 1 < xe_vma_start(vma))
-		return false;
-
-	return true;
-}
-
-static struct xe_vma *lookup_vma(struct xe_vm *vm, u64 page_addr)
-{
-	struct xe_vma *vma = NULL;
-
-	if (vm->usm.last_fault_vma) {   /* Fast lookup */
-		if (vma_matches(vm->usm.last_fault_vma, page_addr))
-			vma = vm->usm.last_fault_vma;
-	}
-	if (!vma)
-		vma = xe_vm_find_overlapping_vma(vm, page_addr, SZ_4K);
-
-	return vma;
-}
-
-static int xe_pf_begin(struct drm_exec *exec, struct xe_vma *vma,
-		       bool atomic, unsigned int id)
-{
-	struct xe_bo *bo = xe_vma_bo(vma);
-	struct xe_vm *vm = xe_vma_vm(vma);
-	int err;
-
-	err = xe_vm_lock_vma(exec, vma);
-	if (err)
-		return err;
-
-	if (atomic && IS_DGFX(vm->xe)) {
-		if (xe_vma_is_userptr(vma)) {
-			err = -EACCES;
-			return err;
-		}
-
-		/* Migrate to VRAM, move should invalidate the VMA first */
-		err = xe_bo_migrate(bo, XE_PL_VRAM0 + id);
-		if (err)
-			return err;
-	} else if (bo) {
-		/* Create backing store if needed */
-		err = xe_bo_validate(bo, vm, true);
-		if (err)
-			return err;
-	}
-
-	return 0;
-}
-
-static int handle_vma_pagefault(struct xe_tile *tile, struct pagefault *pf,
-				struct xe_vma *vma)
-{
-	struct xe_vm *vm = xe_vma_vm(vma);
-	struct drm_exec exec;
-	struct dma_fence *fence;
-	ktime_t end = 0;
-	int err;
-	bool atomic;
-
-	trace_xe_vma_pagefault(vma);
-	atomic = access_is_atomic(pf->access_type);
-
-	/* Check if VMA is valid */
-	if (vma_is_valid(tile, vma) && !atomic)
-		return 0;
-
-retry_userptr:
-	if (xe_vma_is_userptr(vma) &&
-	    xe_vma_userptr_check_repin(to_userptr_vma(vma))) {
-		struct xe_userptr_vma *uvma = to_userptr_vma(vma);
-
-		err = xe_vma_userptr_pin_pages(uvma);
-		if (err)
-			return err;
-	}
-
-	/* Lock VM and BOs dma-resv */
-	drm_exec_init(&exec, 0, 0);
-	drm_exec_until_all_locked(&exec) {
-		err = xe_pf_begin(&exec, vma, atomic, tile->id);
-		drm_exec_retry_on_contention(&exec);
-		if (xe_vm_validate_should_retry(&exec, err, &end))
-			err = -EAGAIN;
-		if (err)
-			goto unlock_dma_resv;
-
-		/* Bind VMA only to the GT that has faulted */
-		trace_xe_vma_pf_bind(vma);
-		fence = xe_vma_rebind(vm, vma, BIT(tile->id));
-		if (IS_ERR(fence)) {
-			err = PTR_ERR(fence);
-			if (xe_vm_validate_should_retry(&exec, err, &end))
-				err = -EAGAIN;
-			goto unlock_dma_resv;
-		}
-	}
-
-	dma_fence_wait(fence, false);
-	dma_fence_put(fence);
-	vma->tile_invalidated &= ~BIT(tile->id);
-
-unlock_dma_resv:
-	drm_exec_fini(&exec);
-	if (err == -EAGAIN)
-		goto retry_userptr;
-
-	return err;
-}
-
-static int handle_pagefault(struct xe_gt *gt, struct pagefault *pf)
-{
-	struct xe_device *xe = gt_to_xe(gt);
-	struct xe_tile *tile = gt_to_tile(gt);
-	struct xe_vm *vm;
-	struct xe_vma *vma = NULL;
-	int err;
-
-	/* SW isn't expected to handle TRTT faults */
-	if (pf->trva_fault)
-		return -EFAULT;
-
-	/* ASID to VM */
-	mutex_lock(&xe->usm.lock);
-	vm = xa_load(&xe->usm.asid_to_vm, pf->asid);
-	if (vm && xe_vm_in_fault_mode(vm))
-		xe_vm_get(vm);
-	else
-		vm = NULL;
-	mutex_unlock(&xe->usm.lock);
-	if (!vm)
-		return -EINVAL;
-
-	/*
-	 * TODO: Change to read lock? Using write lock for simplicity.
-	 */
-	down_write(&vm->lock);
-	vma = lookup_vma(vm, pf->page_addr);
-	if (!vma) {
-		err = -EINVAL;
-		goto unlock_vm;
-	}
-
-	err = handle_vma_pagefault(tile, pf, vma);
-
-unlock_vm:
-	if (!err)
-		vm->usm.last_fault_vma = vma;
-	up_write(&vm->lock);
-	xe_vm_put(vm);
-
-	return err;
-}
-
-static int send_pagefault_reply(struct xe_guc *guc,
-				struct xe_guc_pagefault_reply *reply)
-{
-	u32 action[] = {
-		XE_GUC_ACTION_PAGE_FAULT_RES_DESC,
-		reply->dw0,
-		reply->dw1,
-	};
-
-	return xe_guc_ct_send(&guc->ct, action, ARRAY_SIZE(action), 0, 0);
-}
-
-static void print_pagefault(struct xe_device *xe, struct pagefault *pf)
-{
-	drm_dbg(&xe->drm, "\n\tASID: %d\n"
-		 "\tVFID: %d\n"
-		 "\tPDATA: 0x%04x\n"
-		 "\tFaulted Address: 0x%08x%08x\n"
-		 "\tFaultType: %d\n"
-		 "\tAccessType: %d\n"
-		 "\tFaultLevel: %d\n"
-		 "\tEngineClass: %d\n"
-		 "\tEngineInstance: %d\n",
-		 pf->asid, pf->vfid, pf->pdata, upper_32_bits(pf->page_addr),
-		 lower_32_bits(pf->page_addr),
-		 pf->fault_type, pf->access_type, pf->fault_level,
-		 pf->engine_class, pf->engine_instance);
-}
-
-#define PF_MSG_LEN_DW	4
-
-static bool get_pagefault(struct pf_queue *pf_queue, struct pagefault *pf)
-{
-	const struct xe_guc_pagefault_desc *desc;
-	bool ret = false;
-
-	spin_lock_irq(&pf_queue->lock);
-	if (pf_queue->tail != pf_queue->head) {
-		desc = (const struct xe_guc_pagefault_desc *)
-			(pf_queue->data + pf_queue->tail);
-
-		pf->fault_level = FIELD_GET(PFD_FAULT_LEVEL, desc->dw0);
-		pf->trva_fault = FIELD_GET(XE2_PFD_TRVA_FAULT, desc->dw0);
-		pf->engine_class = FIELD_GET(PFD_ENG_CLASS, desc->dw0);
-		pf->engine_instance = FIELD_GET(PFD_ENG_INSTANCE, desc->dw0);
-		pf->pdata = FIELD_GET(PFD_PDATA_HI, desc->dw1) <<
-			PFD_PDATA_HI_SHIFT;
-		pf->pdata |= FIELD_GET(PFD_PDATA_LO, desc->dw0);
-		pf->asid = FIELD_GET(PFD_ASID, desc->dw1);
-		pf->vfid = FIELD_GET(PFD_VFID, desc->dw2);
-		pf->access_type = FIELD_GET(PFD_ACCESS_TYPE, desc->dw2);
-		pf->fault_type = FIELD_GET(PFD_FAULT_TYPE, desc->dw2);
-		pf->page_addr = (u64)(FIELD_GET(PFD_VIRTUAL_ADDR_HI, desc->dw3)) <<
-			PFD_VIRTUAL_ADDR_HI_SHIFT;
-		pf->page_addr |= FIELD_GET(PFD_VIRTUAL_ADDR_LO, desc->dw2) <<
-			PFD_VIRTUAL_ADDR_LO_SHIFT;
-
-		pf_queue->tail = (pf_queue->tail + PF_MSG_LEN_DW) %
-			pf_queue->num_dw;
-		ret = true;
-	}
-	spin_unlock_irq(&pf_queue->lock);
-
-	return ret;
-}
-
-static bool pf_queue_full(struct pf_queue *pf_queue)
-{
-	lockdep_assert_held(&pf_queue->lock);
-
-	return CIRC_SPACE(pf_queue->head, pf_queue->tail,
-			  pf_queue->num_dw) <=
-		PF_MSG_LEN_DW;
-}
-
-int xe_guc_pagefault_handler(struct xe_guc *guc, u32 *msg, u32 len)
-{
-	struct xe_gt *gt = guc_to_gt(guc);
-	struct xe_device *xe = gt_to_xe(gt);
-	struct pf_queue *pf_queue;
-	unsigned long flags;
-	u32 asid;
-	bool full;
-
-	if (unlikely(len != PF_MSG_LEN_DW))
-		return -EPROTO;
-
-	asid = FIELD_GET(PFD_ASID, msg[1]);
-	pf_queue = gt->usm.pf_queue + (asid % NUM_PF_QUEUE);
-
-	/*
-	 * The below logic doesn't work unless PF_QUEUE_NUM_DW % PF_MSG_LEN_DW == 0
-	 */
-	xe_gt_assert(gt, !(pf_queue->num_dw % PF_MSG_LEN_DW));
-
-	spin_lock_irqsave(&pf_queue->lock, flags);
-	full = pf_queue_full(pf_queue);
-	if (!full) {
-		memcpy(pf_queue->data + pf_queue->head, msg, len * sizeof(u32));
-		pf_queue->head = (pf_queue->head + len) %
-			pf_queue->num_dw;
-		queue_work(gt->usm.pf_wq, &pf_queue->worker);
-	} else {
-		drm_warn(&xe->drm, "PF Queue full, shouldn't be possible");
-	}
-	spin_unlock_irqrestore(&pf_queue->lock, flags);
-
-	return full ? -ENOSPC : 0;
-}
-
-#define USM_QUEUE_MAX_RUNTIME_MS	20
-
-static void pf_queue_work_func(struct work_struct *w)
-{
-	struct pf_queue *pf_queue = container_of(w, struct pf_queue, worker);
-	struct xe_gt *gt = pf_queue->gt;
-	struct xe_device *xe = gt_to_xe(gt);
-	struct xe_guc_pagefault_reply reply = {};
-	struct pagefault pf = {};
-	unsigned long threshold;
-	int ret;
-
-	threshold = jiffies + msecs_to_jiffies(USM_QUEUE_MAX_RUNTIME_MS);
-
-	while (get_pagefault(pf_queue, &pf)) {
-		ret = handle_pagefault(gt, &pf);
-		if (unlikely(ret)) {
-			print_pagefault(xe, &pf);
-			pf.fault_unsuccessful = 1;
-			drm_dbg(&xe->drm, "Fault response: Unsuccessful %d\n", ret);
-		}
-
-		reply.dw0 = FIELD_PREP(PFR_VALID, 1) |
-			FIELD_PREP(PFR_SUCCESS, pf.fault_unsuccessful) |
-			FIELD_PREP(PFR_REPLY, PFR_ACCESS) |
-			FIELD_PREP(PFR_DESC_TYPE, FAULT_RESPONSE_DESC) |
-			FIELD_PREP(PFR_ASID, pf.asid);
-
-		reply.dw1 = FIELD_PREP(PFR_VFID, pf.vfid) |
-			FIELD_PREP(PFR_ENG_INSTANCE, pf.engine_instance) |
-			FIELD_PREP(PFR_ENG_CLASS, pf.engine_class) |
-			FIELD_PREP(PFR_PDATA, pf.pdata);
-
-		send_pagefault_reply(&gt->uc.guc, &reply);
-
-		if (time_after(jiffies, threshold) &&
-		    pf_queue->tail != pf_queue->head) {
-			queue_work(gt->usm.pf_wq, w);
-			break;
-		}
-	}
-}
-
-static void acc_queue_work_func(struct work_struct *w);
-
-static void pagefault_fini(void *arg)
-{
-	struct xe_gt *gt = arg;
-	struct xe_device *xe = gt_to_xe(gt);
-	int i;
-
-	if (!xe->info.has_usm)
-		return;
-
-	destroy_workqueue(gt->usm.acc_wq);
-	destroy_workqueue(gt->usm.pf_wq);
-
-	for (i = 0; i < NUM_PF_QUEUE; ++i)
-		kfree(gt->usm.pf_queue[i].data);
-}
-
-static int xe_alloc_pf_queue(struct xe_gt *gt, struct pf_queue *pf_queue)
-{
-	xe_dss_mask_t all_dss;
-	int num_dss, num_eus;
-
-	bitmap_or(all_dss, gt->fuse_topo.g_dss_mask, gt->fuse_topo.c_dss_mask,
-		  XE_MAX_DSS_FUSE_BITS);
-
-	num_dss = bitmap_weight(all_dss, XE_MAX_DSS_FUSE_BITS);
-	num_eus = bitmap_weight(gt->fuse_topo.eu_mask_per_dss,
-				XE_MAX_EU_FUSE_BITS) * num_dss;
-
-	/* user can issue separate page faults per EU and per CS */
-	pf_queue->num_dw =
-		(num_eus + XE_NUM_HW_ENGINES) * PF_MSG_LEN_DW;
-
-	pf_queue->gt = gt;
-	pf_queue->data = kcalloc(pf_queue->num_dw, sizeof(u32), GFP_KERNEL);
-	if (!pf_queue->data)
-		return -ENOMEM;
-
-	spin_lock_init(&pf_queue->lock);
-	INIT_WORK(&pf_queue->worker, pf_queue_work_func);
-
-	return 0;
-}
-
-int xe_gt_pagefault_init(struct xe_gt *gt)
-{
-	struct xe_device *xe = gt_to_xe(gt);
-	int i, ret = 0;
-
-	if (!xe->info.has_usm)
-		return 0;
-
-	for (i = 0; i < NUM_PF_QUEUE; ++i) {
-		ret = xe_alloc_pf_queue(gt, &gt->usm.pf_queue[i]);
-		if (ret)
-			return ret;
-	}
-	for (i = 0; i < NUM_ACC_QUEUE; ++i) {
-		gt->usm.acc_queue[i].gt = gt;
-		spin_lock_init(&gt->usm.acc_queue[i].lock);
-		INIT_WORK(&gt->usm.acc_queue[i].worker, acc_queue_work_func);
-	}
-
-	gt->usm.pf_wq = alloc_workqueue("xe_gt_page_fault_work_queue",
-					WQ_UNBOUND | WQ_HIGHPRI, NUM_PF_QUEUE);
-	if (!gt->usm.pf_wq)
-		return -ENOMEM;
-
-	gt->usm.acc_wq = alloc_workqueue("xe_gt_access_counter_work_queue",
-					 WQ_UNBOUND | WQ_HIGHPRI,
-					 NUM_ACC_QUEUE);
-	if (!gt->usm.acc_wq) {
-		destroy_workqueue(gt->usm.pf_wq);
-		return -ENOMEM;
-	}
-
-	return devm_add_action_or_reset(xe->drm.dev, pagefault_fini, gt);
-}
-
-void xe_gt_pagefault_reset(struct xe_gt *gt)
-{
-	struct xe_device *xe = gt_to_xe(gt);
-	int i;
-
-	if (!xe->info.has_usm)
-		return;
-
-	for (i = 0; i < NUM_PF_QUEUE; ++i) {
-		spin_lock_irq(&gt->usm.pf_queue[i].lock);
-		gt->usm.pf_queue[i].head = 0;
-		gt->usm.pf_queue[i].tail = 0;
-		spin_unlock_irq(&gt->usm.pf_queue[i].lock);
-	}
-
-	for (i = 0; i < NUM_ACC_QUEUE; ++i) {
-		spin_lock(&gt->usm.acc_queue[i].lock);
-		gt->usm.acc_queue[i].head = 0;
-		gt->usm.acc_queue[i].tail = 0;
-		spin_unlock(&gt->usm.acc_queue[i].lock);
-	}
-}
-
-static int granularity_in_byte(int val)
-{
-	switch (val) {
-	case 0:
-		return SZ_128K;
-	case 1:
-		return SZ_2M;
-	case 2:
-		return SZ_16M;
-	case 3:
-		return SZ_64M;
-	default:
-		return 0;
-	}
-}
-
-static int sub_granularity_in_byte(int val)
-{
-	return (granularity_in_byte(val) / 32);
-}
-
-static void print_acc(struct xe_device *xe, struct acc *acc)
-{
-	drm_warn(&xe->drm, "Access counter request:\n"
-		 "\tType: %s\n"
-		 "\tASID: %d\n"
-		 "\tVFID: %d\n"
-		 "\tEngine: %d:%d\n"
-		 "\tGranularity: 0x%x KB Region/ %d KB sub-granularity\n"
-		 "\tSub_Granularity Vector: 0x%08x\n"
-		 "\tVA Range base: 0x%016llx\n",
-		 acc->access_type ? "AC_NTFY_VAL" : "AC_TRIG_VAL",
-		 acc->asid, acc->vfid, acc->engine_class, acc->engine_instance,
-		 granularity_in_byte(acc->granularity) / SZ_1K,
-		 sub_granularity_in_byte(acc->granularity) / SZ_1K,
-		 acc->sub_granularity, acc->va_range_base);
-}
-
-static struct xe_vma *get_acc_vma(struct xe_vm *vm, struct acc *acc)
-{
-	u64 page_va = acc->va_range_base + (ffs(acc->sub_granularity) - 1) *
-		sub_granularity_in_byte(acc->granularity);
-
-	return xe_vm_find_overlapping_vma(vm, page_va, SZ_4K);
-}
-
-static int handle_acc(struct xe_gt *gt, struct acc *acc)
-{
-	struct xe_device *xe = gt_to_xe(gt);
-	struct xe_tile *tile = gt_to_tile(gt);
-	struct drm_exec exec;
-	struct xe_vm *vm;
-	struct xe_vma *vma;
-	int ret = 0;
-
-	/* We only support ACC_TRIGGER at the moment */
-	if (acc->access_type != ACC_TRIGGER)
-		return -EINVAL;
-
-	/* ASID to VM */
-	mutex_lock(&xe->usm.lock);
-	vm = xa_load(&xe->usm.asid_to_vm, acc->asid);
-	if (vm)
-		xe_vm_get(vm);
-	mutex_unlock(&xe->usm.lock);
-	if (!vm || !xe_vm_in_fault_mode(vm))
-		return -EINVAL;
-
-	down_read(&vm->lock);
-
-	/* Lookup VMA */
-	vma = get_acc_vma(vm, acc);
-	if (!vma) {
-		ret = -EINVAL;
-		goto unlock_vm;
-	}
-
-	trace_xe_vma_acc(vma);
-
-	/* Userptr or null can't be migrated, nothing to do */
-	if (xe_vma_has_no_bo(vma))
-		goto unlock_vm;
-
-	/* Lock VM and BOs dma-resv */
-	drm_exec_init(&exec, 0, 0);
-	drm_exec_until_all_locked(&exec) {
-		ret = xe_pf_begin(&exec, vma, true, tile->id);
-		drm_exec_retry_on_contention(&exec);
-		if (ret)
-			break;
-	}
-
-	drm_exec_fini(&exec);
-unlock_vm:
-	up_read(&vm->lock);
-	xe_vm_put(vm);
-
-	return ret;
-}
-
-#define make_u64(hi__, low__)  ((u64)(hi__) << 32 | (u64)(low__))
-
-#define ACC_MSG_LEN_DW        4
-
-static bool get_acc(struct acc_queue *acc_queue, struct acc *acc)
-{
-	const struct xe_guc_acc_desc *desc;
-	bool ret = false;
-
-	spin_lock(&acc_queue->lock);
-	if (acc_queue->tail != acc_queue->head) {
-		desc = (const struct xe_guc_acc_desc *)
-			(acc_queue->data + acc_queue->tail);
-
-		acc->granularity = FIELD_GET(ACC_GRANULARITY, desc->dw2);
-		acc->sub_granularity = FIELD_GET(ACC_SUBG_HI, desc->dw1) << 31 |
-			FIELD_GET(ACC_SUBG_LO, desc->dw0);
-		acc->engine_class = FIELD_GET(ACC_ENG_CLASS, desc->dw1);
-		acc->engine_instance = FIELD_GET(ACC_ENG_INSTANCE, desc->dw1);
-		acc->asid =  FIELD_GET(ACC_ASID, desc->dw1);
-		acc->vfid =  FIELD_GET(ACC_VFID, desc->dw2);
-		acc->access_type = FIELD_GET(ACC_TYPE, desc->dw0);
-		acc->va_range_base = make_u64(desc->dw3 & ACC_VIRTUAL_ADDR_RANGE_HI,
-					      desc->dw2 & ACC_VIRTUAL_ADDR_RANGE_LO);
-
-		acc_queue->tail = (acc_queue->tail + ACC_MSG_LEN_DW) %
-				  ACC_QUEUE_NUM_DW;
-		ret = true;
-	}
-	spin_unlock(&acc_queue->lock);
-
-	return ret;
-}
-
-static void acc_queue_work_func(struct work_struct *w)
-{
-	struct acc_queue *acc_queue = container_of(w, struct acc_queue, worker);
-	struct xe_gt *gt = acc_queue->gt;
-	struct xe_device *xe = gt_to_xe(gt);
-	struct acc acc = {};
-	unsigned long threshold;
-	int ret;
-
-	threshold = jiffies + msecs_to_jiffies(USM_QUEUE_MAX_RUNTIME_MS);
-
-	while (get_acc(acc_queue, &acc)) {
-		ret = handle_acc(gt, &acc);
-		if (unlikely(ret)) {
-			print_acc(xe, &acc);
-			drm_warn(&xe->drm, "ACC: Unsuccessful %d\n", ret);
-		}
-
-		if (time_after(jiffies, threshold) &&
-		    acc_queue->tail != acc_queue->head) {
-			queue_work(gt->usm.acc_wq, w);
-			break;
-		}
-	}
-}
-
-static bool acc_queue_full(struct acc_queue *acc_queue)
-{
-	lockdep_assert_held(&acc_queue->lock);
-
-	return CIRC_SPACE(acc_queue->head, acc_queue->tail, ACC_QUEUE_NUM_DW) <=
-		ACC_MSG_LEN_DW;
-}
-
-int xe_guc_access_counter_notify_handler(struct xe_guc *guc, u32 *msg, u32 len)
-{
-	struct xe_gt *gt = guc_to_gt(guc);
-	struct acc_queue *acc_queue;
-	u32 asid;
-	bool full;
-
-	/*
-	 * The below logic doesn't work unless ACC_QUEUE_NUM_DW % ACC_MSG_LEN_DW == 0
-	 */
-	BUILD_BUG_ON(ACC_QUEUE_NUM_DW % ACC_MSG_LEN_DW);
-
-	if (unlikely(len != ACC_MSG_LEN_DW))
-		return -EPROTO;
-
-	asid = FIELD_GET(ACC_ASID, msg[1]);
-	acc_queue = &gt->usm.acc_queue[asid % NUM_ACC_QUEUE];
-
-	spin_lock(&acc_queue->lock);
-	full = acc_queue_full(acc_queue);
-	if (!full) {
-		memcpy(acc_queue->data + acc_queue->head, msg,
-		       len * sizeof(u32));
-		acc_queue->head = (acc_queue->head + len) % ACC_QUEUE_NUM_DW;
-		queue_work(gt->usm.acc_wq, &acc_queue->worker);
-	} else {
-		drm_warn(&gt_to_xe(gt)->drm, "ACC Queue full, dropping ACC");
-	}
-	spin_unlock(&acc_queue->lock);
-
-	return full ? -ENOSPC : 0;
-}
diff --git a/rr-cache/d52980be8177c91c0cdd3698491039db63f9ed44/preimage b/rr-cache/d52980be8177c91c0cdd3698491039db63f9ed44/preimage
deleted file mode 100644
index a036aa7353b9..000000000000
--- a/rr-cache/d52980be8177c91c0cdd3698491039db63f9ed44/preimage
+++ /dev/null
@@ -1,693 +0,0 @@
-// SPDX-License-Identifier: MIT
-/*
- * Copyright © 2022 Intel Corporation
- */
-
-#include "xe_gt_pagefault.h"
-
-#include <linux/bitfield.h>
-#include <linux/circ_buf.h>
-
-#include <drm/drm_exec.h>
-#include <drm/drm_managed.h>
-#include <drm/ttm/ttm_execbuf_util.h>
-
-#include "abi/guc_actions_abi.h"
-#include "xe_bo.h"
-#include "xe_gt.h"
-#include "xe_gt_tlb_invalidation.h"
-#include "xe_guc.h"
-#include "xe_guc_ct.h"
-#include "xe_migrate.h"
-#include "xe_trace_bo.h"
-#include "xe_vm.h"
-
-struct pagefault {
-	u64 page_addr;
-	u32 asid;
-	u16 pdata;
-	u8 vfid;
-	u8 access_type;
-	u8 fault_type;
-	u8 fault_level;
-	u8 engine_class;
-	u8 engine_instance;
-	u8 fault_unsuccessful;
-	bool trva_fault;
-};
-
-enum access_type {
-	ACCESS_TYPE_READ = 0,
-	ACCESS_TYPE_WRITE = 1,
-	ACCESS_TYPE_ATOMIC = 2,
-	ACCESS_TYPE_RESERVED = 3,
-};
-
-enum fault_type {
-	NOT_PRESENT = 0,
-	WRITE_ACCESS_VIOLATION = 1,
-	ATOMIC_ACCESS_VIOLATION = 2,
-};
-
-struct acc {
-	u64 va_range_base;
-	u32 asid;
-	u32 sub_granularity;
-	u8 granularity;
-	u8 vfid;
-	u8 access_type;
-	u8 engine_class;
-	u8 engine_instance;
-};
-
-static bool access_is_atomic(enum access_type access_type)
-{
-	return access_type == ACCESS_TYPE_ATOMIC;
-}
-
-static bool vma_is_valid(struct xe_tile *tile, struct xe_vma *vma)
-{
-	return BIT(tile->id) & vma->tile_present &&
-		!(BIT(tile->id) & vma->tile_invalidated);
-}
-
-static bool vma_matches(struct xe_vma *vma, u64 page_addr)
-{
-	if (page_addr > xe_vma_end(vma) - 1 ||
-	    page_addr + SZ_4K - 1 < xe_vma_start(vma))
-		return false;
-
-	return true;
-}
-
-static struct xe_vma *lookup_vma(struct xe_vm *vm, u64 page_addr)
-{
-	struct xe_vma *vma = NULL;
-
-	if (vm->usm.last_fault_vma) {   /* Fast lookup */
-		if (vma_matches(vm->usm.last_fault_vma, page_addr))
-			vma = vm->usm.last_fault_vma;
-	}
-	if (!vma)
-		vma = xe_vm_find_overlapping_vma(vm, page_addr, SZ_4K);
-
-	return vma;
-}
-
-static int xe_pf_begin(struct drm_exec *exec, struct xe_vma *vma,
-		       bool atomic, unsigned int id)
-{
-	struct xe_bo *bo = xe_vma_bo(vma);
-	struct xe_vm *vm = xe_vma_vm(vma);
-	int err;
-
-	err = xe_vm_lock_vma(exec, vma);
-	if (err)
-		return err;
-
-	if (atomic && IS_DGFX(vm->xe)) {
-		if (xe_vma_is_userptr(vma)) {
-			err = -EACCES;
-			return err;
-		}
-
-		/* Migrate to VRAM, move should invalidate the VMA first */
-		err = xe_bo_migrate(bo, XE_PL_VRAM0 + id);
-		if (err)
-			return err;
-	} else if (bo) {
-		/* Create backing store if needed */
-		err = xe_bo_validate(bo, vm, true);
-		if (err)
-			return err;
-	}
-
-	return 0;
-}
-
-static int handle_vma_pagefault(struct xe_tile *tile, struct pagefault *pf,
-				struct xe_vma *vma)
-{
-	struct xe_vm *vm = xe_vma_vm(vma);
-	struct drm_exec exec;
-	struct dma_fence *fence;
-	ktime_t end = 0;
-	int err;
-	bool atomic;
-
-	trace_xe_vma_pagefault(vma);
-	atomic = access_is_atomic(pf->access_type);
-
-	/* Check if VMA is valid */
-	if (vma_is_valid(tile, vma) && !atomic)
-		return 0;
-
-retry_userptr:
-	if (xe_vma_is_userptr(vma) &&
-	    xe_vma_userptr_check_repin(to_userptr_vma(vma))) {
-		struct xe_userptr_vma *uvma = to_userptr_vma(vma);
-
-		err = xe_vma_userptr_pin_pages(uvma);
-		if (err)
-			return err;
-	}
-
-	/* Lock VM and BOs dma-resv */
-	drm_exec_init(&exec, 0, 0);
-	drm_exec_until_all_locked(&exec) {
-		err = xe_pf_begin(&exec, vma, atomic, tile->id);
-		drm_exec_retry_on_contention(&exec);
-		if (xe_vm_validate_should_retry(&exec, err, &end))
-			err = -EAGAIN;
-		if (err)
-			goto unlock_dma_resv;
-
-		/* Bind VMA only to the GT that has faulted */
-		trace_xe_vma_pf_bind(vma);
-		fence = xe_vma_rebind(vm, vma, BIT(tile->id));
-		if (IS_ERR(fence)) {
-			err = PTR_ERR(fence);
-			if (xe_vm_validate_should_retry(&exec, err, &end))
-				err = -EAGAIN;
-			goto unlock_dma_resv;
-		}
-	}
-
-	dma_fence_wait(fence, false);
-	dma_fence_put(fence);
-	vma->tile_invalidated &= ~BIT(tile->id);
-
-unlock_dma_resv:
-	drm_exec_fini(&exec);
-	if (err == -EAGAIN)
-		goto retry_userptr;
-
-	return err;
-}
-
-static int handle_pagefault(struct xe_gt *gt, struct pagefault *pf)
-{
-	struct xe_device *xe = gt_to_xe(gt);
-	struct xe_tile *tile = gt_to_tile(gt);
-	struct xe_vm *vm;
-	struct xe_vma *vma = NULL;
-	int err;
-
-	/* SW isn't expected to handle TRTT faults */
-	if (pf->trva_fault)
-		return -EFAULT;
-
-	/* ASID to VM */
-	mutex_lock(&xe->usm.lock);
-	vm = xa_load(&xe->usm.asid_to_vm, pf->asid);
-	if (vm && xe_vm_in_fault_mode(vm))
-		xe_vm_get(vm);
-	else
-		vm = NULL;
-	mutex_unlock(&xe->usm.lock);
-	if (!vm)
-		return -EINVAL;
-
-	/*
-	 * TODO: Change to read lock? Using write lock for simplicity.
-	 */
-	down_write(&vm->lock);
-	vma = lookup_vma(vm, pf->page_addr);
-	if (!vma) {
-		err = -EINVAL;
-		goto unlock_vm;
-	}
-
-	err = handle_vma_pagefault(tile, pf, vma);
-
-unlock_vm:
-	if (!err)
-		vm->usm.last_fault_vma = vma;
-	up_write(&vm->lock);
-	xe_vm_put(vm);
-
-	return err;
-}
-
-static int send_pagefault_reply(struct xe_guc *guc,
-				struct xe_guc_pagefault_reply *reply)
-{
-	u32 action[] = {
-		XE_GUC_ACTION_PAGE_FAULT_RES_DESC,
-		reply->dw0,
-		reply->dw1,
-	};
-
-	return xe_guc_ct_send(&guc->ct, action, ARRAY_SIZE(action), 0, 0);
-}
-
-static void print_pagefault(struct xe_device *xe, struct pagefault *pf)
-{
-	drm_dbg(&xe->drm, "\n\tASID: %d\n"
-		 "\tVFID: %d\n"
-		 "\tPDATA: 0x%04x\n"
-		 "\tFaulted Address: 0x%08x%08x\n"
-		 "\tFaultType: %d\n"
-		 "\tAccessType: %d\n"
-		 "\tFaultLevel: %d\n"
-		 "\tEngineClass: %d\n"
-		 "\tEngineInstance: %d\n",
-		 pf->asid, pf->vfid, pf->pdata, upper_32_bits(pf->page_addr),
-		 lower_32_bits(pf->page_addr),
-		 pf->fault_type, pf->access_type, pf->fault_level,
-		 pf->engine_class, pf->engine_instance);
-}
-
-#define PF_MSG_LEN_DW	4
-
-static bool get_pagefault(struct pf_queue *pf_queue, struct pagefault *pf)
-{
-	const struct xe_guc_pagefault_desc *desc;
-	bool ret = false;
-
-	spin_lock_irq(&pf_queue->lock);
-	if (pf_queue->tail != pf_queue->head) {
-		desc = (const struct xe_guc_pagefault_desc *)
-			(pf_queue->data + pf_queue->tail);
-
-		pf->fault_level = FIELD_GET(PFD_FAULT_LEVEL, desc->dw0);
-		pf->trva_fault = FIELD_GET(XE2_PFD_TRVA_FAULT, desc->dw0);
-		pf->engine_class = FIELD_GET(PFD_ENG_CLASS, desc->dw0);
-		pf->engine_instance = FIELD_GET(PFD_ENG_INSTANCE, desc->dw0);
-		pf->pdata = FIELD_GET(PFD_PDATA_HI, desc->dw1) <<
-			PFD_PDATA_HI_SHIFT;
-		pf->pdata |= FIELD_GET(PFD_PDATA_LO, desc->dw0);
-		pf->asid = FIELD_GET(PFD_ASID, desc->dw1);
-		pf->vfid = FIELD_GET(PFD_VFID, desc->dw2);
-		pf->access_type = FIELD_GET(PFD_ACCESS_TYPE, desc->dw2);
-		pf->fault_type = FIELD_GET(PFD_FAULT_TYPE, desc->dw2);
-		pf->page_addr = (u64)(FIELD_GET(PFD_VIRTUAL_ADDR_HI, desc->dw3)) <<
-			PFD_VIRTUAL_ADDR_HI_SHIFT;
-		pf->page_addr |= FIELD_GET(PFD_VIRTUAL_ADDR_LO, desc->dw2) <<
-			PFD_VIRTUAL_ADDR_LO_SHIFT;
-
-		pf_queue->tail = (pf_queue->tail + PF_MSG_LEN_DW) %
-			pf_queue->num_dw;
-		ret = true;
-	}
-	spin_unlock_irq(&pf_queue->lock);
-
-	return ret;
-}
-
-static bool pf_queue_full(struct pf_queue *pf_queue)
-{
-	lockdep_assert_held(&pf_queue->lock);
-
-	return CIRC_SPACE(pf_queue->head, pf_queue->tail,
-			  pf_queue->num_dw) <=
-		PF_MSG_LEN_DW;
-}
-
-int xe_guc_pagefault_handler(struct xe_guc *guc, u32 *msg, u32 len)
-{
-	struct xe_gt *gt = guc_to_gt(guc);
-	struct xe_device *xe = gt_to_xe(gt);
-	struct pf_queue *pf_queue;
-	unsigned long flags;
-	u32 asid;
-	bool full;
-
-	if (unlikely(len != PF_MSG_LEN_DW))
-		return -EPROTO;
-
-	asid = FIELD_GET(PFD_ASID, msg[1]);
-	pf_queue = gt->usm.pf_queue + (asid % NUM_PF_QUEUE);
-
-	/*
-	 * The below logic doesn't work unless PF_QUEUE_NUM_DW % PF_MSG_LEN_DW == 0
-	 */
-	xe_gt_assert(gt, !(pf_queue->num_dw % PF_MSG_LEN_DW));
-
-	spin_lock_irqsave(&pf_queue->lock, flags);
-	full = pf_queue_full(pf_queue);
-	if (!full) {
-		memcpy(pf_queue->data + pf_queue->head, msg, len * sizeof(u32));
-		pf_queue->head = (pf_queue->head + len) %
-			pf_queue->num_dw;
-		queue_work(gt->usm.pf_wq, &pf_queue->worker);
-	} else {
-		drm_warn(&xe->drm, "PF Queue full, shouldn't be possible");
-	}
-	spin_unlock_irqrestore(&pf_queue->lock, flags);
-
-	return full ? -ENOSPC : 0;
-}
-
-#define USM_QUEUE_MAX_RUNTIME_MS	20
-
-static void pf_queue_work_func(struct work_struct *w)
-{
-	struct pf_queue *pf_queue = container_of(w, struct pf_queue, worker);
-	struct xe_gt *gt = pf_queue->gt;
-	struct xe_device *xe = gt_to_xe(gt);
-	struct xe_guc_pagefault_reply reply = {};
-	struct pagefault pf = {};
-	unsigned long threshold;
-	int ret;
-
-	threshold = jiffies + msecs_to_jiffies(USM_QUEUE_MAX_RUNTIME_MS);
-
-	while (get_pagefault(pf_queue, &pf)) {
-		ret = handle_pagefault(gt, &pf);
-		if (unlikely(ret)) {
-			print_pagefault(xe, &pf);
-			pf.fault_unsuccessful = 1;
-			drm_dbg(&xe->drm, "Fault response: Unsuccessful %d\n", ret);
-		}
-
-		reply.dw0 = FIELD_PREP(PFR_VALID, 1) |
-			FIELD_PREP(PFR_SUCCESS, pf.fault_unsuccessful) |
-			FIELD_PREP(PFR_REPLY, PFR_ACCESS) |
-			FIELD_PREP(PFR_DESC_TYPE, FAULT_RESPONSE_DESC) |
-			FIELD_PREP(PFR_ASID, pf.asid);
-
-		reply.dw1 = FIELD_PREP(PFR_VFID, pf.vfid) |
-			FIELD_PREP(PFR_ENG_INSTANCE, pf.engine_instance) |
-			FIELD_PREP(PFR_ENG_CLASS, pf.engine_class) |
-			FIELD_PREP(PFR_PDATA, pf.pdata);
-
-		send_pagefault_reply(&gt->uc.guc, &reply);
-
-		if (time_after(jiffies, threshold) &&
-		    pf_queue->tail != pf_queue->head) {
-			queue_work(gt->usm.pf_wq, w);
-			break;
-		}
-	}
-}
-
-static void acc_queue_work_func(struct work_struct *w);
-
-static void pagefault_fini(void *arg)
-{
-	struct xe_gt *gt = arg;
-	struct xe_device *xe = gt_to_xe(gt);
-<<<<<<<
-=======
-	int i;
->>>>>>>
-
-	if (!xe->info.has_usm)
-		return;
-
-	destroy_workqueue(gt->usm.acc_wq);
-	destroy_workqueue(gt->usm.pf_wq);
-<<<<<<<
-=======
-
-	for (i = 0; i < NUM_PF_QUEUE; ++i)
-		kfree(gt->usm.pf_queue[i].data);
-}
-
-static int xe_alloc_pf_queue(struct xe_gt *gt, struct pf_queue *pf_queue)
-{
-	xe_dss_mask_t all_dss;
-	int num_dss, num_eus;
-
-	bitmap_or(all_dss, gt->fuse_topo.g_dss_mask, gt->fuse_topo.c_dss_mask,
-		  XE_MAX_DSS_FUSE_BITS);
-
-	num_dss = bitmap_weight(all_dss, XE_MAX_DSS_FUSE_BITS);
-	num_eus = bitmap_weight(gt->fuse_topo.eu_mask_per_dss,
-				XE_MAX_EU_FUSE_BITS) * num_dss;
-
-	/* user can issue separate page faults per EU and per CS */
-	pf_queue->num_dw =
-		(num_eus + XE_NUM_HW_ENGINES) * PF_MSG_LEN_DW;
-
-	pf_queue->gt = gt;
-	pf_queue->data = kcalloc(pf_queue->num_dw, sizeof(u32), GFP_KERNEL);
-	if (!pf_queue->data)
-		return -ENOMEM;
-
-	spin_lock_init(&pf_queue->lock);
-	INIT_WORK(&pf_queue->worker, pf_queue_work_func);
-
-	return 0;
->>>>>>>
-}
-
-int xe_gt_pagefault_init(struct xe_gt *gt)
-{
-	struct xe_device *xe = gt_to_xe(gt);
-	int i, ret = 0;
-
-	if (!xe->info.has_usm)
-		return 0;
-
-	for (i = 0; i < NUM_PF_QUEUE; ++i) {
-		ret = xe_alloc_pf_queue(gt, &gt->usm.pf_queue[i]);
-		if (ret)
-			return ret;
-	}
-	for (i = 0; i < NUM_ACC_QUEUE; ++i) {
-		gt->usm.acc_queue[i].gt = gt;
-		spin_lock_init(&gt->usm.acc_queue[i].lock);
-		INIT_WORK(&gt->usm.acc_queue[i].worker, acc_queue_work_func);
-	}
-
-	gt->usm.pf_wq = alloc_workqueue("xe_gt_page_fault_work_queue",
-					WQ_UNBOUND | WQ_HIGHPRI, NUM_PF_QUEUE);
-	if (!gt->usm.pf_wq)
-		return -ENOMEM;
-
-	gt->usm.acc_wq = alloc_workqueue("xe_gt_access_counter_work_queue",
-					 WQ_UNBOUND | WQ_HIGHPRI,
-					 NUM_ACC_QUEUE);
-	if (!gt->usm.acc_wq) {
-		destroy_workqueue(gt->usm.pf_wq);
-		return -ENOMEM;
-	}
-
-	return devm_add_action_or_reset(xe->drm.dev, pagefault_fini, gt);
-}
-
-void xe_gt_pagefault_reset(struct xe_gt *gt)
-{
-	struct xe_device *xe = gt_to_xe(gt);
-	int i;
-
-	if (!xe->info.has_usm)
-		return;
-
-	for (i = 0; i < NUM_PF_QUEUE; ++i) {
-		spin_lock_irq(&gt->usm.pf_queue[i].lock);
-		gt->usm.pf_queue[i].head = 0;
-		gt->usm.pf_queue[i].tail = 0;
-		spin_unlock_irq(&gt->usm.pf_queue[i].lock);
-	}
-
-	for (i = 0; i < NUM_ACC_QUEUE; ++i) {
-		spin_lock(&gt->usm.acc_queue[i].lock);
-		gt->usm.acc_queue[i].head = 0;
-		gt->usm.acc_queue[i].tail = 0;
-		spin_unlock(&gt->usm.acc_queue[i].lock);
-	}
-}
-
-static int granularity_in_byte(int val)
-{
-	switch (val) {
-	case 0:
-		return SZ_128K;
-	case 1:
-		return SZ_2M;
-	case 2:
-		return SZ_16M;
-	case 3:
-		return SZ_64M;
-	default:
-		return 0;
-	}
-}
-
-static int sub_granularity_in_byte(int val)
-{
-	return (granularity_in_byte(val) / 32);
-}
-
-static void print_acc(struct xe_device *xe, struct acc *acc)
-{
-	drm_warn(&xe->drm, "Access counter request:\n"
-		 "\tType: %s\n"
-		 "\tASID: %d\n"
-		 "\tVFID: %d\n"
-		 "\tEngine: %d:%d\n"
-		 "\tGranularity: 0x%x KB Region/ %d KB sub-granularity\n"
-		 "\tSub_Granularity Vector: 0x%08x\n"
-		 "\tVA Range base: 0x%016llx\n",
-		 acc->access_type ? "AC_NTFY_VAL" : "AC_TRIG_VAL",
-		 acc->asid, acc->vfid, acc->engine_class, acc->engine_instance,
-		 granularity_in_byte(acc->granularity) / SZ_1K,
-		 sub_granularity_in_byte(acc->granularity) / SZ_1K,
-		 acc->sub_granularity, acc->va_range_base);
-}
-
-static struct xe_vma *get_acc_vma(struct xe_vm *vm, struct acc *acc)
-{
-	u64 page_va = acc->va_range_base + (ffs(acc->sub_granularity) - 1) *
-		sub_granularity_in_byte(acc->granularity);
-
-	return xe_vm_find_overlapping_vma(vm, page_va, SZ_4K);
-}
-
-static int handle_acc(struct xe_gt *gt, struct acc *acc)
-{
-	struct xe_device *xe = gt_to_xe(gt);
-	struct xe_tile *tile = gt_to_tile(gt);
-	struct drm_exec exec;
-	struct xe_vm *vm;
-	struct xe_vma *vma;
-	int ret = 0;
-
-	/* We only support ACC_TRIGGER at the moment */
-	if (acc->access_type != ACC_TRIGGER)
-		return -EINVAL;
-
-	/* ASID to VM */
-	mutex_lock(&xe->usm.lock);
-	vm = xa_load(&xe->usm.asid_to_vm, acc->asid);
-	if (vm)
-		xe_vm_get(vm);
-	mutex_unlock(&xe->usm.lock);
-	if (!vm || !xe_vm_in_fault_mode(vm))
-		return -EINVAL;
-
-	down_read(&vm->lock);
-
-	/* Lookup VMA */
-	vma = get_acc_vma(vm, acc);
-	if (!vma) {
-		ret = -EINVAL;
-		goto unlock_vm;
-	}
-
-	trace_xe_vma_acc(vma);
-
-	/* Userptr or null can't be migrated, nothing to do */
-	if (xe_vma_has_no_bo(vma))
-		goto unlock_vm;
-
-	/* Lock VM and BOs dma-resv */
-	drm_exec_init(&exec, 0, 0);
-	drm_exec_until_all_locked(&exec) {
-		ret = xe_pf_begin(&exec, vma, true, tile->id);
-		drm_exec_retry_on_contention(&exec);
-		if (ret)
-			break;
-	}
-
-	drm_exec_fini(&exec);
-unlock_vm:
-	up_read(&vm->lock);
-	xe_vm_put(vm);
-
-	return ret;
-}
-
-#define make_u64(hi__, low__)  ((u64)(hi__) << 32 | (u64)(low__))
-
-#define ACC_MSG_LEN_DW        4
-
-static bool get_acc(struct acc_queue *acc_queue, struct acc *acc)
-{
-	const struct xe_guc_acc_desc *desc;
-	bool ret = false;
-
-	spin_lock(&acc_queue->lock);
-	if (acc_queue->tail != acc_queue->head) {
-		desc = (const struct xe_guc_acc_desc *)
-			(acc_queue->data + acc_queue->tail);
-
-		acc->granularity = FIELD_GET(ACC_GRANULARITY, desc->dw2);
-		acc->sub_granularity = FIELD_GET(ACC_SUBG_HI, desc->dw1) << 31 |
-			FIELD_GET(ACC_SUBG_LO, desc->dw0);
-		acc->engine_class = FIELD_GET(ACC_ENG_CLASS, desc->dw1);
-		acc->engine_instance = FIELD_GET(ACC_ENG_INSTANCE, desc->dw1);
-		acc->asid =  FIELD_GET(ACC_ASID, desc->dw1);
-		acc->vfid =  FIELD_GET(ACC_VFID, desc->dw2);
-		acc->access_type = FIELD_GET(ACC_TYPE, desc->dw0);
-		acc->va_range_base = make_u64(desc->dw3 & ACC_VIRTUAL_ADDR_RANGE_HI,
-					      desc->dw2 & ACC_VIRTUAL_ADDR_RANGE_LO);
-
-		acc_queue->tail = (acc_queue->tail + ACC_MSG_LEN_DW) %
-				  ACC_QUEUE_NUM_DW;
-		ret = true;
-	}
-	spin_unlock(&acc_queue->lock);
-
-	return ret;
-}
-
-static void acc_queue_work_func(struct work_struct *w)
-{
-	struct acc_queue *acc_queue = container_of(w, struct acc_queue, worker);
-	struct xe_gt *gt = acc_queue->gt;
-	struct xe_device *xe = gt_to_xe(gt);
-	struct acc acc = {};
-	unsigned long threshold;
-	int ret;
-
-	threshold = jiffies + msecs_to_jiffies(USM_QUEUE_MAX_RUNTIME_MS);
-
-	while (get_acc(acc_queue, &acc)) {
-		ret = handle_acc(gt, &acc);
-		if (unlikely(ret)) {
-			print_acc(xe, &acc);
-			drm_warn(&xe->drm, "ACC: Unsuccessful %d\n", ret);
-		}
-
-		if (time_after(jiffies, threshold) &&
-		    acc_queue->tail != acc_queue->head) {
-			queue_work(gt->usm.acc_wq, w);
-			break;
-		}
-	}
-}
-
-static bool acc_queue_full(struct acc_queue *acc_queue)
-{
-	lockdep_assert_held(&acc_queue->lock);
-
-	return CIRC_SPACE(acc_queue->head, acc_queue->tail, ACC_QUEUE_NUM_DW) <=
-		ACC_MSG_LEN_DW;
-}
-
-int xe_guc_access_counter_notify_handler(struct xe_guc *guc, u32 *msg, u32 len)
-{
-	struct xe_gt *gt = guc_to_gt(guc);
-	struct acc_queue *acc_queue;
-	u32 asid;
-	bool full;
-
-	/*
-	 * The below logic doesn't work unless ACC_QUEUE_NUM_DW % ACC_MSG_LEN_DW == 0
-	 */
-	BUILD_BUG_ON(ACC_QUEUE_NUM_DW % ACC_MSG_LEN_DW);
-
-	if (unlikely(len != ACC_MSG_LEN_DW))
-		return -EPROTO;
-
-	asid = FIELD_GET(ACC_ASID, msg[1]);
-	acc_queue = &gt->usm.acc_queue[asid % NUM_ACC_QUEUE];
-
-	spin_lock(&acc_queue->lock);
-	full = acc_queue_full(acc_queue);
-	if (!full) {
-		memcpy(acc_queue->data + acc_queue->head, msg,
-		       len * sizeof(u32));
-		acc_queue->head = (acc_queue->head + len) % ACC_QUEUE_NUM_DW;
-		queue_work(gt->usm.acc_wq, &acc_queue->worker);
-	} else {
-		drm_warn(&gt_to_xe(gt)->drm, "ACC Queue full, dropping ACC");
-	}
-	spin_unlock(&acc_queue->lock);
-
-	return full ? -ENOSPC : 0;
-}