1 files changed, 0 insertions, 230 deletions
diff --git a/drivers/misc/habanalabs/context.c b/drivers/misc/habanalabs/context.c
deleted file mode 100644
index ec92b3506b1f..000000000000
--- a/drivers/misc/habanalabs/context.c
+++ /dev/null
@@ -1,230 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-
-/*
- * Copyright 2016-2019 HabanaLabs, Ltd.
- * All Rights Reserved.
- */
-
-#include "habanalabs.h"
-
-#include <linux/slab.h>
-
-static void hl_ctx_fini(struct hl_ctx *ctx)
-{
-	struct hl_device *hdev = ctx->hdev;
-	int i;
-
-	/*
-	 * If we arrived here, there are no jobs waiting for this context
-	 * on its queues so we can safely remove it.
-	 * This is because for each CS, we increment the ref count and for
-	 * every CS that was finished we decrement it and we won't arrive
-	 * to this function unless the ref count is 0
-	 */
-
-	for (i = 0 ; i < HL_MAX_PENDING_CS ; i++)
-		dma_fence_put(ctx->cs_pending[i]);
-
-	if (ctx->asid != HL_KERNEL_ASID_ID) {
-		/* The engines are stopped as there is no executing CS, but the
-		 * Coresight might be still working by accessing addresses
-		 * related to the stopped engines. Hence stop it explicitly.
-		 * Stop only if this is the compute context, as there can be
-		 * only one compute context
-		 */
-		if ((hdev->in_debug) && (hdev->compute_ctx == ctx))
-			hl_device_set_debug_mode(hdev, false);
-
-		hl_vm_ctx_fini(ctx);
-		hl_asid_free(hdev, ctx->asid);
-	} else {
-		hl_mmu_ctx_fini(ctx);
-	}
-}
-
-void hl_ctx_do_release(struct kref *ref)
-{
-	struct hl_ctx *ctx;
-
-	ctx = container_of(ref, struct hl_ctx, refcount);
-
-	hl_ctx_fini(ctx);
-
-	if (ctx->hpriv)
-		hl_hpriv_put(ctx->hpriv);
-
-	kfree(ctx);
-}
-
-int hl_ctx_create(struct hl_device *hdev, struct hl_fpriv *hpriv)
-{
-	struct hl_ctx_mgr *mgr = &hpriv->ctx_mgr;
-	struct hl_ctx *ctx;
-	int rc;
-
-	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
-	if (!ctx) {
-		rc = -ENOMEM;
-		goto out_err;
-	}
-
-	mutex_lock(&mgr->ctx_lock);
-	rc = idr_alloc(&mgr->ctx_handles, ctx, 1, 0, GFP_KERNEL);
-	mutex_unlock(&mgr->ctx_lock);
-
-	if (rc < 0) {
-		dev_err(hdev->dev, "Failed to allocate IDR for a new CTX\n");
-		goto free_ctx;
-	}
-
-	ctx->handle = rc;
-
-	rc = hl_ctx_init(hdev, ctx, false);
-	if (rc)
-		goto remove_from_idr;
-
-	hl_hpriv_get(hpriv);
-	ctx->hpriv = hpriv;
-
-	/* TODO: remove for multiple contexts per process */
-	hpriv->ctx = ctx;
-
-	/* TODO: remove the following line for multiple process support */
-	hdev->compute_ctx = ctx;
-
-	return 0;
-
-remove_from_idr:
-	mutex_lock(&mgr->ctx_lock);
-	idr_remove(&mgr->ctx_handles, ctx->handle);
-	mutex_unlock(&mgr->ctx_lock);
-free_ctx:
-	kfree(ctx);
-out_err:
-	return rc;
-}
-
-void hl_ctx_free(struct hl_device *hdev, struct hl_ctx *ctx)
-{
-	if (kref_put(&ctx->refcount, hl_ctx_do_release) == 1)
-		return;
-
-	dev_warn(hdev->dev,
-		"Context %d closed or terminated but its CS are executing\n",
-		ctx->asid);
-}
-
-int hl_ctx_init(struct hl_device *hdev, struct hl_ctx *ctx, bool is_kernel_ctx)
-{
-	int rc = 0;
-
-	ctx->hdev = hdev;
-
-	kref_init(&ctx->refcount);
-
-	ctx->cs_sequence = 1;
-	spin_lock_init(&ctx->cs_lock);
-	atomic_set(&ctx->thread_ctx_switch_token, 1);
-	ctx->thread_ctx_switch_wait_token = 0;
-
-	if (is_kernel_ctx) {
-		ctx->asid = HL_KERNEL_ASID_ID; /* Kernel driver gets ASID 0 */
-		rc = hl_mmu_ctx_init(ctx);
-		if (rc) {
-			dev_err(hdev->dev, "Failed to init mmu ctx module\n");
-			goto mem_ctx_err;
-		}
-	} else {
-		ctx->asid = hl_asid_alloc(hdev);
-		if (!ctx->asid) {
-			dev_err(hdev->dev, "No free ASID, failed to create context\n");
-			return -ENOMEM;
-		}
-
-		rc = hl_vm_ctx_init(ctx);
-		if (rc) {
-			dev_err(hdev->dev, "Failed to init mem ctx module\n");
-			rc = -ENOMEM;
-			goto mem_ctx_err;
-		}
-	}
-
-	return 0;
-
-mem_ctx_err:
-	if (ctx->asid != HL_KERNEL_ASID_ID)
-		hl_asid_free(hdev, ctx->asid);
-
-	return rc;
-}
-
-void hl_ctx_get(struct hl_device *hdev, struct hl_ctx *ctx)
-{
-	kref_get(&ctx->refcount);
-}
-
-int hl_ctx_put(struct hl_ctx *ctx)
-{
-	return kref_put(&ctx->refcount, hl_ctx_do_release);
-}
-
-struct dma_fence *hl_ctx_get_fence(struct hl_ctx *ctx, u64 seq)
-{
-	struct dma_fence *fence;
-
-	spin_lock(&ctx->cs_lock);
-
-	if (seq >= ctx->cs_sequence) {
-		spin_unlock(&ctx->cs_lock);
-		return ERR_PTR(-EINVAL);
-	}
-
-	if (seq + HL_MAX_PENDING_CS < ctx->cs_sequence) {
-		spin_unlock(&ctx->cs_lock);
-		return NULL;
-	}
-
-	fence = dma_fence_get(
-			ctx->cs_pending[seq & (HL_MAX_PENDING_CS - 1)]);
-	spin_unlock(&ctx->cs_lock);
-
-	return fence;
-}
-
-/*
- * hl_ctx_mgr_init - initialize the context manager
- *
- * @mgr: pointer to context manager structure
- *
- * This manager is an object inside the hpriv object of the user process.
- * The function is called when a user process opens the FD.
- */
-void hl_ctx_mgr_init(struct hl_ctx_mgr *mgr)
-{
-	mutex_init(&mgr->ctx_lock);
-	idr_init(&mgr->ctx_handles);
-}
-
-/*
- * hl_ctx_mgr_fini - finalize the context manager
- *
- * @hdev: pointer to device structure
- * @mgr: pointer to context manager structure
- *
- * This function goes over all the contexts in the manager and frees them.
- * It is called when a process closes the FD.
- */
-void hl_ctx_mgr_fini(struct hl_device *hdev, struct hl_ctx_mgr *mgr)
-{
-	struct hl_ctx *ctx;
-	struct idr *idp;
-	u32 id;
-
-	idp = &mgr->ctx_handles;
-
-	idr_for_each_entry(idp, ctx, id)
-		hl_ctx_free(hdev, ctx);
-
-	idr_destroy(&mgr->ctx_handles);
-	mutex_destroy(&mgr->ctx_lock);
-}