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authorLee Daly <lee.daly@intel.com>2018-05-09 17:14:29 +0100
committerPablo de Lara <pablo.de.lara.guarch@intel.com>2018-05-10 17:46:20 +0100
commitc720cd2b35faedbed17df151b3cb1fcf48e1a0bf (patch)
treeb3b089de4fa5b5f5aa2dc788f7558cf5d5d193c7 /drivers/compress/isal/isal_compress_pmd.c
parent53a9baa98c36c3e532a7f4d83686361edb8a1acc (diff)
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compress/isal: add private xform related ops
This patch creates, configures and frees the private xform, taking the applications xform and using it to populate the PMDs own private xform with the information which will be required for the compress/decompress functions. This information includes the level, algorithm, type of huffman code, type of checksum etc. Signed-off-by: Lee Daly <lee.daly@intel.com> Reviewed-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
Diffstat (limited to 'drivers/compress/isal/isal_compress_pmd.c')
-rw-r--r--drivers/compress/isal/isal_compress_pmd.c176
1 files changed, 176 insertions, 0 deletions
diff --git a/drivers/compress/isal/isal_compress_pmd.c b/drivers/compress/isal/isal_compress_pmd.c
index 5cc9409..1224dd0 100644
--- a/drivers/compress/isal/isal_compress_pmd.c
+++ b/drivers/compress/isal/isal_compress_pmd.c
@@ -1,6 +1,7 @@
/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2018 Intel Corporation
*/
+#include <isa-l.h>
#include <rte_bus_vdev.h>
#include <rte_common.h>
@@ -9,8 +10,183 @@
#include "isal_compress_pmd_private.h"
+#define RTE_COMP_ISAL_WINDOW_SIZE 15
+#define RTE_COMP_ISAL_LEVEL_ZERO 0 /* ISA-L Level 0 used for fixed Huffman */
+#define RTE_COMP_ISAL_LEVEL_ONE 1
+#define RTE_COMP_ISAL_LEVEL_TWO 2
+#define RTE_COMP_ISAL_LEVEL_THREE 3 /* Optimised for AVX512 & AVX2 only */
+
int isal_logtype_driver;
+/* Verify and set private xform parameters */
+int
+isal_comp_set_priv_xform_parameters(struct isal_priv_xform *priv_xform,
+ const struct rte_comp_xform *xform)
+{
+ if (xform == NULL)
+ return -EINVAL;
+
+ /* Set compression private xform variables */
+ if (xform->type == RTE_COMP_COMPRESS) {
+ /* Set private xform type - COMPRESS/DECOMPRESS */
+ priv_xform->type = RTE_COMP_COMPRESS;
+
+ /* Set private xform algorithm */
+ if (xform->compress.algo != RTE_COMP_ALGO_DEFLATE) {
+ if (xform->compress.algo == RTE_COMP_ALGO_NULL) {
+ ISAL_PMD_LOG(ERR, "By-pass not supported\n");
+ return -ENOTSUP;
+ }
+ ISAL_PMD_LOG(ERR, "Algorithm not supported\n");
+ return -ENOTSUP;
+ }
+ priv_xform->compress.algo = RTE_COMP_ALGO_DEFLATE;
+
+ /* Set private xform checksum - raw deflate by default */
+ if (xform->compress.chksum != RTE_COMP_CHECKSUM_NONE) {
+ ISAL_PMD_LOG(ERR, "Checksum not supported\n");
+ return -ENOTSUP;
+ }
+
+ /* Set private xform window size, 32K supported */
+ if (xform->compress.window_size == RTE_COMP_ISAL_WINDOW_SIZE)
+ priv_xform->compress.window_size =
+ RTE_COMP_ISAL_WINDOW_SIZE;
+ else {
+ ISAL_PMD_LOG(ERR, "Window size not supported\n");
+ return -ENOTSUP;
+ }
+
+ /* Set private xform huffman type */
+ switch (xform->compress.deflate.huffman) {
+ case(RTE_COMP_HUFFMAN_DEFAULT):
+ priv_xform->compress.deflate.huffman =
+ RTE_COMP_HUFFMAN_DEFAULT;
+ break;
+ case(RTE_COMP_HUFFMAN_FIXED):
+ priv_xform->compress.deflate.huffman =
+ RTE_COMP_HUFFMAN_FIXED;
+ break;
+ case(RTE_COMP_HUFFMAN_DYNAMIC):
+ priv_xform->compress.deflate.huffman =
+ RTE_COMP_HUFFMAN_DYNAMIC;
+ break;
+ default:
+ ISAL_PMD_LOG(ERR, "Huffman code not supported\n");
+ return -ENOTSUP;
+ }
+
+ /* Set private xform level.
+ * Checking compliance with compressdev API, -1 <= level => 9
+ */
+ if (xform->compress.level < RTE_COMP_LEVEL_PMD_DEFAULT ||
+ xform->compress.level > RTE_COMP_LEVEL_MAX) {
+ ISAL_PMD_LOG(ERR, "Compression level out of range\n");
+ return -EINVAL;
+ }
+ /* Check for Compressdev API level 0, No compression
+ * not supported in ISA-L
+ */
+ else if (xform->compress.level == RTE_COMP_LEVEL_NONE) {
+ ISAL_PMD_LOG(ERR, "No Compression not supported\n");
+ return -ENOTSUP;
+ }
+ /* If using fixed huffman code, level must be 0 */
+ else if (priv_xform->compress.deflate.huffman ==
+ RTE_COMP_HUFFMAN_FIXED) {
+ ISAL_PMD_LOG(DEBUG, "ISA-L level 0 used due to a"
+ " fixed huffman code\n");
+ priv_xform->compress.level = RTE_COMP_ISAL_LEVEL_ZERO;
+ priv_xform->level_buffer_size =
+ ISAL_DEF_LVL0_DEFAULT;
+ } else {
+ /* Mapping API levels to ISA-L levels 1,2 & 3 */
+ switch (xform->compress.level) {
+ case RTE_COMP_LEVEL_PMD_DEFAULT:
+ /* Default is 1 if not using fixed huffman */
+ priv_xform->compress.level =
+ RTE_COMP_ISAL_LEVEL_ONE;
+ priv_xform->level_buffer_size =
+ ISAL_DEF_LVL1_DEFAULT;
+ break;
+ case RTE_COMP_LEVEL_MIN:
+ priv_xform->compress.level =
+ RTE_COMP_ISAL_LEVEL_ONE;
+ priv_xform->level_buffer_size =
+ ISAL_DEF_LVL1_DEFAULT;
+ break;
+ case RTE_COMP_ISAL_LEVEL_TWO:
+ priv_xform->compress.level =
+ RTE_COMP_ISAL_LEVEL_TWO;
+ priv_xform->level_buffer_size =
+ ISAL_DEF_LVL2_DEFAULT;
+ break;
+ /* Level 3 or higher requested */
+ default:
+ /* Check for AVX512, to use ISA-L level 3 */
+ if (rte_cpu_get_flag_enabled(
+ RTE_CPUFLAG_AVX512F)) {
+ priv_xform->compress.level =
+ RTE_COMP_ISAL_LEVEL_THREE;
+ priv_xform->level_buffer_size =
+ ISAL_DEF_LVL3_DEFAULT;
+ }
+ /* Check for AVX2, to use ISA-L level 3 */
+ else if (rte_cpu_get_flag_enabled(
+ RTE_CPUFLAG_AVX2)) {
+ priv_xform->compress.level =
+ RTE_COMP_ISAL_LEVEL_THREE;
+ priv_xform->level_buffer_size =
+ ISAL_DEF_LVL3_DEFAULT;
+ } else {
+ ISAL_PMD_LOG(DEBUG, "Requested ISA-L level"
+ " 3 or above; Level 3 optimized"
+ " for AVX512 & AVX2 only."
+ " level changed to 2.\n");
+ priv_xform->compress.level =
+ RTE_COMP_ISAL_LEVEL_TWO;
+ priv_xform->level_buffer_size =
+ ISAL_DEF_LVL2_DEFAULT;
+ }
+ }
+ }
+ }
+
+ /* Set decompression private xform variables */
+ else if (xform->type == RTE_COMP_DECOMPRESS) {
+
+ /* Set private xform type - COMPRESS/DECOMPRESS */
+ priv_xform->type = RTE_COMP_DECOMPRESS;
+
+ /* Set private xform algorithm */
+ if (xform->decompress.algo != RTE_COMP_ALGO_DEFLATE) {
+ if (xform->decompress.algo == RTE_COMP_ALGO_NULL) {
+ ISAL_PMD_LOG(ERR, "By pass not supported\n");
+ return -ENOTSUP;
+ }
+ ISAL_PMD_LOG(ERR, "Algorithm not supported\n");
+ return -ENOTSUP;
+ }
+ priv_xform->decompress.algo = RTE_COMP_ALGO_DEFLATE;
+
+ /* Set private xform checksum - raw deflate by default */
+ if (xform->compress.chksum != RTE_COMP_CHECKSUM_NONE) {
+ ISAL_PMD_LOG(ERR, "Checksum not supported\n");
+ return -ENOTSUP;
+ }
+
+ /* Set private xform window size, 32K supported */
+ if (xform->decompress.window_size == RTE_COMP_ISAL_WINDOW_SIZE)
+ priv_xform->decompress.window_size =
+ RTE_COMP_ISAL_WINDOW_SIZE;
+ else {
+ ISAL_PMD_LOG(ERR, "Window size not supported\n");
+ return -ENOTSUP;
+ }
+ }
+ return 0;
+}
+
/* Create ISA-L compression device */
static int
compdev_isal_create(const char *name, struct rte_vdev_device *vdev,