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path: root/drivers/crypto/ccree/cc_sram_mgr.c
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Diffstat (limited to 'drivers/crypto/ccree/cc_sram_mgr.c')
-rw-r--r--drivers/crypto/ccree/cc_sram_mgr.c78
1 files changed, 25 insertions, 53 deletions
diff --git a/drivers/crypto/ccree/cc_sram_mgr.c b/drivers/crypto/ccree/cc_sram_mgr.c
index 62c885e6e791..37a95856361f 100644
--- a/drivers/crypto/ccree/cc_sram_mgr.c
+++ b/drivers/crypto/ccree/cc_sram_mgr.c
@@ -5,88 +5,61 @@
#include "cc_sram_mgr.h"
/**
- * struct cc_sram_ctx -Internal RAM context manager
- * @sram_free_offset: the offset to the non-allocated area
- */
-struct cc_sram_ctx {
- cc_sram_addr_t sram_free_offset;
-};
-
-/**
- * cc_sram_mgr_fini() - Cleanup SRAM pool.
- *
- * @drvdata: Associated device driver context
- */
-void cc_sram_mgr_fini(struct cc_drvdata *drvdata)
-{
- /* Nothing needed */
-}
-
-/**
* cc_sram_mgr_init() - Initializes SRAM pool.
* The pool starts right at the beginning of SRAM.
* Returns zero for success, negative value otherwise.
*
* @drvdata: Associated device driver context
+ *
+ * Return:
+ * 0 for success, negative error code for failure.
*/
int cc_sram_mgr_init(struct cc_drvdata *drvdata)
{
- struct cc_sram_ctx *ctx;
- dma_addr_t start = 0;
+ u32 start = 0;
struct device *dev = drvdata_to_dev(drvdata);
if (drvdata->hw_rev < CC_HW_REV_712) {
/* Pool starts after ROM bytes */
- start = (dma_addr_t)cc_ioread(drvdata,
- CC_REG(HOST_SEP_SRAM_THRESHOLD));
-
+ start = cc_ioread(drvdata, CC_REG(HOST_SEP_SRAM_THRESHOLD));
if ((start & 0x3) != 0) {
- dev_err(dev, "Invalid SRAM offset %pad\n", &start);
+ dev_err(dev, "Invalid SRAM offset 0x%x\n", start);
return -EINVAL;
}
}
- /* Allocate "this" context */
- ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
-
- if (!ctx)
- return -ENOMEM;
-
- ctx->sram_free_offset = start;
- drvdata->sram_mgr_handle = ctx;
-
+ drvdata->sram_free_offset = start;
return 0;
}
-/*!
- * Allocated buffer from SRAM pool.
- * Note: Caller is responsible to free the LAST allocated buffer.
- * This function does not taking care of any fragmentation may occur
- * by the order of calls to alloc/free.
+/**
+ * cc_sram_alloc() - Allocate buffer from SRAM pool.
+ *
+ * @drvdata: Associated device driver context
+ * @size: The requested numer of bytes to allocate
*
- * \param drvdata
- * \param size The requested bytes to allocate
+ * Return:
+ * Address offset in SRAM or NULL_SRAM_ADDR for failure.
*/
-cc_sram_addr_t cc_sram_alloc(struct cc_drvdata *drvdata, u32 size)
+u32 cc_sram_alloc(struct cc_drvdata *drvdata, u32 size)
{
- struct cc_sram_ctx *smgr_ctx = drvdata->sram_mgr_handle;
struct device *dev = drvdata_to_dev(drvdata);
- cc_sram_addr_t p;
+ u32 p;
if ((size & 0x3)) {
dev_err(dev, "Requested buffer size (%u) is not multiple of 4",
size);
return NULL_SRAM_ADDR;
}
- if (size > (CC_CC_SRAM_SIZE - smgr_ctx->sram_free_offset)) {
- dev_err(dev, "Not enough space to allocate %u B (at offset %llu)\n",
- size, smgr_ctx->sram_free_offset);
+ if (size > (CC_CC_SRAM_SIZE - drvdata->sram_free_offset)) {
+ dev_err(dev, "Not enough space to allocate %u B (at offset %u)\n",
+ size, drvdata->sram_free_offset);
return NULL_SRAM_ADDR;
}
- p = smgr_ctx->sram_free_offset;
- smgr_ctx->sram_free_offset += size;
- dev_dbg(dev, "Allocated %u B @ %u\n", size, (unsigned int)p);
+ p = drvdata->sram_free_offset;
+ drvdata->sram_free_offset += size;
+ dev_dbg(dev, "Allocated %u B @ %u\n", size, p);
return p;
}
@@ -97,13 +70,12 @@ cc_sram_addr_t cc_sram_alloc(struct cc_drvdata *drvdata, u32 size)
*
* @src: A pointer to array of words to set as consts.
* @dst: The target SRAM buffer to set into
- * @nelements: The number of words in "src" array
+ * @nelement: The number of words in "src" array
* @seq: A pointer to the given IN/OUT descriptor sequence
* @seq_len: A pointer to the given IN/OUT sequence length
*/
-void cc_set_sram_desc(const u32 *src, cc_sram_addr_t dst,
- unsigned int nelement, struct cc_hw_desc *seq,
- unsigned int *seq_len)
+void cc_set_sram_desc(const u32 *src, u32 dst, unsigned int nelement,
+ struct cc_hw_desc *seq, unsigned int *seq_len)
{
u32 i;
unsigned int idx = *seq_len;