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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/drivers/crypto/ccree/cc_sram_mgr.c
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@@ -1,27 +1,8 @@
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 // SPDX-License-Identifier: GPL-2.0
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-/* Copyright (C) 2012-2018 ARM Limited or its affiliates. */
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+/* Copyright (C) 2012-2019 ARM Limited (or its affiliates). */
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 #include "cc_driver.h"
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 #include "cc_sram_mgr.h"
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-
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-/**
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- * struct cc_sram_ctx -Internal RAM context manager
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- * @sram_free_offset:   the offset to the non-allocated area
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- */
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-struct cc_sram_ctx {
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-	cc_sram_addr_t sram_free_offset;
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-};
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-
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-/**
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- * cc_sram_mgr_fini() - Cleanup SRAM pool.
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- *
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- * @drvdata: Associated device driver context
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- */
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-void cc_sram_mgr_fini(struct cc_drvdata *drvdata)
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-{
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-	/* Free "this" context */
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-	kfree(drvdata->sram_mgr_handle);
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-}
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 /**
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  * cc_sram_mgr_init() - Initializes SRAM pool.
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@@ -29,65 +10,56 @@
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  *      Returns zero for success, negative value otherwise.
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  *
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  * @drvdata: Associated device driver context
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+ *
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+ * Return:
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+ * 0 for success, negative error code for failure.
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  */
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 int cc_sram_mgr_init(struct cc_drvdata *drvdata)
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 {
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-	struct cc_sram_ctx *ctx;
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-	dma_addr_t start = 0;
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+	u32 start = 0;
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 	struct device *dev = drvdata_to_dev(drvdata);
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 	if (drvdata->hw_rev < CC_HW_REV_712) {
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 		/* Pool starts after ROM bytes */
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-		start = (dma_addr_t)cc_ioread(drvdata,
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-					      CC_REG(HOST_SEP_SRAM_THRESHOLD));
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-
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+		start = cc_ioread(drvdata, CC_REG(HOST_SEP_SRAM_THRESHOLD));
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 		if ((start & 0x3) != 0) {
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-			dev_err(dev, "Invalid SRAM offset %pad\n", &start);
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+			dev_err(dev, "Invalid SRAM offset 0x%x\n", start);
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 			return -EINVAL;
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 		}
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 	}
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-	/* Allocate "this" context */
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-	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
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-
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-	if (!ctx)
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-		return -ENOMEM;
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-
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-	ctx->sram_free_offset = start;
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-	drvdata->sram_mgr_handle = ctx;
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-
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+	drvdata->sram_free_offset = start;
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 	return 0;
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 }
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-/*!
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- * Allocated buffer from SRAM pool.
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- * Note: Caller is responsible to free the LAST allocated buffer.
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- * This function does not taking care of any fragmentation may occur
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- * by the order of calls to alloc/free.
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+/**
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+ * cc_sram_alloc() - Allocate buffer from SRAM pool.
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  *
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- * \param drvdata
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- * \param size The requested bytes to allocate
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+ * @drvdata: Associated device driver context
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+ * @size: The requested numer of bytes to allocate
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+ *
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+ * Return:
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+ * Address offset in SRAM or NULL_SRAM_ADDR for failure.
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  */
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-cc_sram_addr_t cc_sram_alloc(struct cc_drvdata *drvdata, u32 size)
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+u32 cc_sram_alloc(struct cc_drvdata *drvdata, u32 size)
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 {
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-	struct cc_sram_ctx *smgr_ctx = drvdata->sram_mgr_handle;
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 	struct device *dev = drvdata_to_dev(drvdata);
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-	cc_sram_addr_t p;
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+	u32 p;
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 	if ((size & 0x3)) {
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 		dev_err(dev, "Requested buffer size (%u) is not multiple of 4",
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 			size);
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 		return NULL_SRAM_ADDR;
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 	}
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-	if (size > (CC_CC_SRAM_SIZE - smgr_ctx->sram_free_offset)) {
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-		dev_err(dev, "Not enough space to allocate %u B (at offset %llu)\n",
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-			size, smgr_ctx->sram_free_offset);
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+	if (size > (CC_CC_SRAM_SIZE - drvdata->sram_free_offset)) {
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+		dev_err(dev, "Not enough space to allocate %u B (at offset %u)\n",
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+			size, drvdata->sram_free_offset);
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 		return NULL_SRAM_ADDR;
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 	}
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-	p = smgr_ctx->sram_free_offset;
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-	smgr_ctx->sram_free_offset += size;
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-	dev_dbg(dev, "Allocated %u B @ %u\n", size, (unsigned int)p);
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+	p = drvdata->sram_free_offset;
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+	drvdata->sram_free_offset += size;
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+	dev_dbg(dev, "Allocated %u B @ %u\n", size, p);
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 	return p;
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 }
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@@ -98,13 +70,12 @@
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  *
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  * @src:	  A pointer to array of words to set as consts.
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  * @dst:	  The target SRAM buffer to set into
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- * @nelements:	  The number of words in "src" array
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+ * @nelement:	  The number of words in "src" array
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  * @seq:	  A pointer to the given IN/OUT descriptor sequence
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  * @seq_len:	  A pointer to the given IN/OUT sequence length
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  */
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-void cc_set_sram_desc(const u32 *src, cc_sram_addr_t dst,
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-		      unsigned int nelement, struct cc_hw_desc *seq,
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-		      unsigned int *seq_len)
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+void cc_set_sram_desc(const u32 *src, u32 dst, unsigned int nelement,
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+		      struct cc_hw_desc *seq, unsigned int *seq_len)
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 {
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 	u32 i;
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 	unsigned int idx = *seq_len;