[PATCH v3 04/16] compress/qat: add xform processing

[Fiona Trahe <fiona.trahe@intel.com>]

Add code to process compressdev rte_comp_xforms, creating
private qat_comp_xforms with prepared firmware message templates.

Signed-off-by: Fiona Trahe <fiona.trahe@intel.com>
Signed-off-by: Tomasz Jozwiak <tomaszx.jozwiak@intel.com>
---
 drivers/compress/qat/qat_comp.c     | 239 ++++++++++++++++++++++++++++++++++++
 drivers/compress/qat/qat_comp.h     |  30 +++++
 drivers/compress/qat/qat_comp_pmd.h |  16 +++
 3 files changed, 285 insertions(+)

diff --git a/drivers/compress/qat/qat_comp.c b/drivers/compress/qat/qat_comp.c
index caa1158..cb2005a 100644
--- a/drivers/compress/qat/qat_comp.c
+++ b/drivers/compress/qat/qat_comp.c
@@ -2,4 +2,243 @@
  * Copyright(c) 2018 Intel Corporation
  */
 
+
+#include <rte_mempool.h>
+#include <rte_mbuf.h>
+#include <rte_hexdump.h>
+#include <rte_comp.h>
+#include <rte_bus_pci.h>
+#include <rte_byteorder.h>
+#include <rte_memcpy.h>
+#include <rte_common.h>
+#include <rte_spinlock.h>
+#include <rte_log.h>
+#include <rte_malloc.h>
+
+#include "qat_logs.h"
 #include "qat_comp.h"
+#include "qat_comp_pmd.h"
+
+unsigned int
+qat_comp_xform_size(void)
+{
+	return RTE_ALIGN_CEIL(sizeof(struct qat_comp_xform), 8);
+}
+
+static void qat_comp_create_req_hdr(struct icp_qat_fw_comn_req_hdr *header,
+				    enum qat_comp_request_type request)
+{
+	if (request == QAT_COMP_REQUEST_FIXED_COMP_STATELESS)
+		header->service_cmd_id = ICP_QAT_FW_COMP_CMD_STATIC;
+	else if (request == QAT_COMP_REQUEST_DYNAMIC_COMP_STATELESS)
+		header->service_cmd_id = ICP_QAT_FW_COMP_CMD_DYNAMIC;
+	else if (request == QAT_COMP_REQUEST_DECOMPRESS)
+		header->service_cmd_id = ICP_QAT_FW_COMP_CMD_DECOMPRESS;
+
+	header->service_type = ICP_QAT_FW_COMN_REQ_CPM_FW_COMP;
+	header->hdr_flags =
+	    ICP_QAT_FW_COMN_HDR_FLAGS_BUILD(ICP_QAT_FW_COMN_REQ_FLAG_SET);
+
+	header->comn_req_flags = ICP_QAT_FW_COMN_FLAGS_BUILD(
+	    QAT_COMN_CD_FLD_TYPE_16BYTE_DATA, QAT_COMN_PTR_TYPE_FLAT);
+}
+
+static int qat_comp_create_templates(struct qat_comp_xform *qat_xform,
+			const struct rte_memzone *interm_buff_mz __rte_unused,
+			const struct rte_comp_xform *xform)
+{
+	struct icp_qat_fw_comp_req *comp_req;
+	int comp_level, algo;
+	uint32_t req_par_flags;
+	int direction = ICP_QAT_HW_COMPRESSION_DIR_COMPRESS;
+
+	if (unlikely(qat_xform == NULL)) {
+		QAT_LOG(ERR, "Session was not created for this device");
+		return -EINVAL;
+	}
+
+	if (qat_xform->qat_comp_request_type == QAT_COMP_REQUEST_DECOMPRESS) {
+		direction = ICP_QAT_HW_COMPRESSION_DIR_DECOMPRESS;
+		comp_level = ICP_QAT_HW_COMPRESSION_DEPTH_1;
+		req_par_flags = ICP_QAT_FW_COMP_REQ_PARAM_FLAGS_BUILD(
+				ICP_QAT_FW_COMP_SOP, ICP_QAT_FW_COMP_EOP,
+				ICP_QAT_FW_COMP_BFINAL, ICP_QAT_FW_COMP_NO_CNV,
+				ICP_QAT_FW_COMP_NO_CNV_RECOVERY);
+
+	} else {
+		if (xform->compress.level == RTE_COMP_LEVEL_PMD_DEFAULT)
+			comp_level = ICP_QAT_HW_COMPRESSION_DEPTH_8;
+		else if (xform->compress.level == 1)
+			comp_level = ICP_QAT_HW_COMPRESSION_DEPTH_1;
+		else if (xform->compress.level == 2)
+			comp_level = ICP_QAT_HW_COMPRESSION_DEPTH_4;
+		else if (xform->compress.level == 3)
+			comp_level = ICP_QAT_HW_COMPRESSION_DEPTH_8;
+		else if (xform->compress.level >= 4 &&
+			 xform->compress.level <= 9)
+			comp_level = ICP_QAT_HW_COMPRESSION_DEPTH_16;
+		else {
+			QAT_LOG(ERR, "compression level not supported");
+			return -EINVAL;
+		}
+		req_par_flags = ICP_QAT_FW_COMP_REQ_PARAM_FLAGS_BUILD(
+				ICP_QAT_FW_COMP_SOP, ICP_QAT_FW_COMP_EOP,
+				ICP_QAT_FW_COMP_BFINAL, ICP_QAT_FW_COMP_CNV,
+				ICP_QAT_FW_COMP_CNV_RECOVERY);
+	}
+
+	switch (xform->compress.algo) {
+	case RTE_COMP_ALGO_DEFLATE:
+		algo = ICP_QAT_HW_COMPRESSION_ALGO_DEFLATE;
+		break;
+	case RTE_COMP_ALGO_LZS:
+	default:
+		/* RTE_COMP_NULL */
+		QAT_LOG(ERR, "compression algorithm not supported");
+		return -EINVAL;
+	}
+
+	comp_req = &qat_xform->qat_comp_req_tmpl;
+
+	/* Initialize header */
+	qat_comp_create_req_hdr(&comp_req->comn_hdr,
+					qat_xform->qat_comp_request_type);
+
+	comp_req->comn_hdr.serv_specif_flags = ICP_QAT_FW_COMP_FLAGS_BUILD(
+	    ICP_QAT_FW_COMP_STATELESS_SESSION,
+	    ICP_QAT_FW_COMP_NOT_AUTO_SELECT_BEST,
+	    ICP_QAT_FW_COMP_NOT_ENH_AUTO_SELECT_BEST,
+	    ICP_QAT_FW_COMP_NOT_DISABLE_TYPE0_ENH_AUTO_SELECT_BEST,
+	    ICP_QAT_FW_COMP_DISABLE_SECURE_RAM_USED_AS_INTMD_BUF);
+
+	comp_req->cd_pars.sl.comp_slice_cfg_word[0] =
+	    ICP_QAT_HW_COMPRESSION_CONFIG_BUILD(
+		direction,
+		/* In CPM 1.6 only valid mode ! */
+		ICP_QAT_HW_COMPRESSION_DELAYED_MATCH_ENABLED, algo,
+		/* Translate level to depth */
+		comp_level, ICP_QAT_HW_COMPRESSION_FILE_TYPE_0);
+
+	comp_req->comp_pars.initial_adler = 1;
+	comp_req->comp_pars.initial_crc32 = 0;
+	comp_req->comp_pars.req_par_flags = req_par_flags;
+
+
+	if (qat_xform->qat_comp_request_type ==
+			QAT_COMP_REQUEST_FIXED_COMP_STATELESS ||
+	    qat_xform->qat_comp_request_type == QAT_COMP_REQUEST_DECOMPRESS) {
+		ICP_QAT_FW_COMN_NEXT_ID_SET(&comp_req->comp_cd_ctrl,
+					    ICP_QAT_FW_SLICE_DRAM_WR);
+		ICP_QAT_FW_COMN_CURR_ID_SET(&comp_req->comp_cd_ctrl,
+					    ICP_QAT_FW_SLICE_COMP);
+	} else if (qat_xform->qat_comp_request_type ==
+		   QAT_COMP_REQUEST_DYNAMIC_COMP_STATELESS) {
+
+		QAT_LOG(ERR, "Dynamic huffman encoding not supported");
+		return -EINVAL;
+	}
+
+#if RTE_LOG_DP_LEVEL >= RTE_LOG_DEBUG
+	QAT_DP_HEXDUMP_LOG(DEBUG, "qat compression message template:", comp_req,
+		    sizeof(struct icp_qat_fw_comp_req));
+#endif
+	return 0;
+}
+
+/**
+ * Create driver private_xform data.
+ *
+ * @param dev
+ *   Compressdev device
+ * @param xform
+ *   xform data from application
+ * @param private_xform
+ *   ptr where handle of pmd's private_xform data should be stored
+ * @return
+ *  - if successful returns 0
+ *    and valid private_xform handle
+ *  - <0 in error cases
+ *  - Returns -EINVAL if input parameters are invalid.
+ *  - Returns -ENOTSUP if comp device does not support the comp transform.
+ *  - Returns -ENOMEM if the private_xform could not be allocated.
+ */
+int
+qat_comp_private_xform_create(struct rte_compressdev *dev,
+			      const struct rte_comp_xform *xform,
+			      void **private_xform)
+{
+	struct qat_comp_dev_private *qat = dev->data->dev_private;
+
+	if (unlikely(private_xform == NULL)) {
+		QAT_LOG(ERR, "QAT: private_xform parameter is NULL");
+		return -EINVAL;
+	}
+	if (unlikely(qat->xformpool == NULL)) {
+		QAT_LOG(ERR, "QAT device has no private_xform mempool");
+		return -ENOMEM;
+	}
+	if (rte_mempool_get(qat->xformpool, private_xform)) {
+		QAT_LOG(ERR, "Couldn't get object from qat xform mempool");
+		return -ENOMEM;
+	}
+
+	struct qat_comp_xform *qat_xform =
+			(struct qat_comp_xform *)*private_xform;
+
+	if (xform->type == RTE_COMP_COMPRESS) {
+		if (xform->compress.deflate.huffman ==
+				RTE_COMP_HUFFMAN_DYNAMIC) {
+			QAT_LOG(ERR,
+			"QAT device doesn't support dynamic compression");
+			return -ENOTSUP;
+		}
+
+		if (xform->compress.deflate.huffman == RTE_COMP_HUFFMAN_FIXED ||
+		  ((xform->compress.deflate.huffman == RTE_COMP_HUFFMAN_DEFAULT)
+				   && qat->interm_buff_mz == NULL))
+
+			qat_xform->qat_comp_request_type =
+					QAT_COMP_REQUEST_FIXED_COMP_STATELESS;
+
+
+	} else {
+		qat_xform->qat_comp_request_type = QAT_COMP_REQUEST_DECOMPRESS;
+	}
+
+	qat_xform->checksum_type = xform->compress.chksum;
+
+	if (qat_comp_create_templates(qat_xform, qat->interm_buff_mz, xform)) {
+		QAT_LOG(ERR, "QAT: Problem with setting compression");
+		return -EINVAL;
+	}
+	return 0;
+}
+
+/**
+ * Free driver private_xform data.
+ *
+ * @param dev
+ *   Compressdev device
+ * @param private_xform
+ *   handle of pmd's private_xform data
+ * @return
+ *  - 0 if successful
+ *  - <0 in error cases
+ *  - Returns -EINVAL if input parameters are invalid.
+ */
+int
+qat_comp_private_xform_free(struct rte_compressdev *dev __rte_unused,
+			    void *private_xform)
+{
+	struct qat_comp_xform *qat_xform =
+			(struct qat_comp_xform *)private_xform;
+
+	if (qat_xform) {
+		memset(qat_xform, 0, qat_comp_xform_size());
+		struct rte_mempool *mp = rte_mempool_from_obj(qat_xform);
+
+		rte_mempool_put(mp, qat_xform);
+		return 0;
+	}
+	return -EINVAL;
+}
diff --git a/drivers/compress/qat/qat_comp.h b/drivers/compress/qat/qat_comp.h
index 89c475e..0f58a76 100644
--- a/drivers/compress/qat/qat_comp.h
+++ b/drivers/compress/qat/qat_comp.h
@@ -10,5 +10,35 @@
 #include <rte_compressdev.h>
 #include <rte_compressdev_pmd.h>
 
+#include "icp_qat_hw.h"
+#include "icp_qat_fw_comp.h"
+#include "icp_qat_fw_la.h"
+
+enum qat_comp_request_type {
+	QAT_COMP_REQUEST_FIXED_COMP_STATELESS,
+	QAT_COMP_REQUEST_DYNAMIC_COMP_STATELESS,
+	QAT_COMP_REQUEST_DECOMPRESS,
+	REQ_COMP_END
+};
+
+
+struct qat_comp_xform {
+	struct icp_qat_fw_comp_req qat_comp_req_tmpl;
+	enum qat_comp_request_type qat_comp_request_type;
+	enum rte_comp_checksum_type checksum_type;
+};
+
+
+int
+qat_comp_private_xform_create(struct rte_compressdev *dev,
+			      const struct rte_comp_xform *xform,
+			      void **private_xform);
+
+int
+qat_comp_private_xform_free(struct rte_compressdev *dev, void *private_xform);
+
+unsigned int
+qat_comp_xform_size(void);
+
 #endif
 #endif
diff --git a/drivers/compress/qat/qat_comp_pmd.h b/drivers/compress/qat/qat_comp_pmd.h
index 9b5b543..fd97cbf 100644
--- a/drivers/compress/qat/qat_comp_pmd.h
+++ b/drivers/compress/qat/qat_comp_pmd.h
@@ -11,5 +11,21 @@
 #include <rte_compressdev_pmd.h>
 
 
+/** private data structure for a QAT compression device.
+ * This QAT device is a device offering only a compression service,
+ * there can be one of these on each qat_pci_device (VF).
+ */
+struct qat_comp_dev_private {
+	struct qat_pci_device *qat_dev;
+	/**< The qat pci device hosting the service */
+	struct rte_compressdev *compressdev;
+	/**< The pointer to this compression device structure */
+	const struct rte_memzone *interm_buff_mz;
+	/**< The device's memory for intermediate buffers */
+	struct rte_mempool *xformpool;
+	/**< The device's pool for qat_comp_xforms */
+
+};
+
 #endif
 #endif /* _QAT_COMP_PMD_H_ */
-- 
2.7.4