crypto: qat - enable deflate for QAT GEN4

jira LE-1907
Rebuild_History Non-Buildable kernel-rt-5.14.0-284.30.1.rt14.315.el9_2
commit-author Giovanni Cabiddu <[email protected]>
commit 5b14b2b

Enable deflate for QAT GEN4 devices.

This adds
  (1) logic to create configuration entries at probe time for the
  compression instances for QAT GEN4 devices;
  (2) the implementation of QAT GEN4 specific compression operations,
  required since the creation of the compression request template is
  different between GEN2 and GEN4; and
  (3) updates to the firmware API related to compression for GEN4.

The implementation configures the device to produce data compressed
dynamically, optimized for throughput over compression ratio.

	Signed-off-by: Giovanni Cabiddu <[email protected]>
	Reviewed-by: Wojciech Ziemba <[email protected]>
	Reviewed-by: Adam Guerin <[email protected]>
	Signed-off-by: Herbert Xu <[email protected]>
(cherry picked from commit 5b14b2b)
	Signed-off-by: Jonathan Maple <[email protected]>

Author: PlaidCat

drivers/crypto/qat/qat_4xxx/adf_4xxx_hw_data.c

@@ -4,6 +4,7 @@
 #include <adf_accel_devices.h>
 #include <adf_cfg.h>
 #include <adf_common_drv.h>
+#include <adf_gen4_dc.h>
 #include <adf_gen4_hw_data.h>
 #include <adf_gen4_pfvf.h>
 #include <adf_gen4_pm.h>
@@ -357,10 +358,11 @@ void adf_init_hw_data_4xxx(struct adf_hw_device_data *hw_data)
 	hw_data->ring_pair_reset = adf_gen4_ring_pair_reset;
 	hw_data->enable_pm = adf_gen4_enable_pm;
 	hw_data->handle_pm_interrupt = adf_gen4_handle_pm_interrupt;
-	hw_data->dev_config = adf_crypto_dev_config;
+	hw_data->dev_config = adf_gen4_dev_config;
 
 	adf_gen4_init_hw_csr_ops(&hw_data->csr_ops);
 	adf_gen4_init_pf_pfvf_ops(&hw_data->pfvf_ops);
+	adf_gen4_init_dc_ops(&hw_data->dc_ops);
 }
 
 void adf_clean_hw_data_4xxx(struct adf_hw_device_data *hw_data)

drivers/crypto/qat/qat_4xxx/adf_4xxx_hw_data.h

@@ -70,6 +70,6 @@ enum icp_qat_4xxx_slice_mask {
 
 void adf_init_hw_data_4xxx(struct adf_hw_device_data *hw_data);
 void adf_clean_hw_data_4xxx(struct adf_hw_device_data *hw_data);
-int adf_crypto_dev_config(struct adf_accel_dev *accel_dev);
+int adf_gen4_dev_config(struct adf_accel_dev *accel_dev);
 
 #endif

drivers/crypto/qat/qat_4xxx/adf_drv.c

@@ -9,6 +9,7 @@
 #include <adf_common_drv.h>
 
 #include "adf_4xxx_hw_data.h"
+#include "qat_compression.h"
 #include "qat_crypto.h"
 #include "adf_transport_access_macros.h"
 
@@ -19,6 +20,16 @@ static const struct pci_device_id adf_pci_tbl[] = {
 };
 MODULE_DEVICE_TABLE(pci, adf_pci_tbl);
 
+enum configs {
+	DEV_CFG_CY = 0,
+	DEV_CFG_DC,
+};
+
+static const char * const services_operations[] = {
+	ADF_CFG_CY,
+	ADF_CFG_DC,
+};
+
 static void adf_cleanup_accel(struct adf_accel_dev *accel_dev)
 {
 	if (accel_dev->hw_device) {
@@ -53,7 +64,7 @@ static int adf_cfg_dev_init(struct adf_accel_dev *accel_dev)
 	return 0;
 }
 
-int adf_crypto_dev_config(struct adf_accel_dev *accel_dev)
+static int adf_crypto_dev_config(struct adf_accel_dev *accel_dev)
 {
 	char key[ADF_CFG_MAX_KEY_LEN_IN_BYTES];
 	int banks = GET_MAX_BANKS(accel_dev);
@@ -68,14 +79,6 @@ int adf_crypto_dev_config(struct adf_accel_dev *accel_dev)
 	else
 		instances = 0;
 
-	ret = adf_cfg_section_add(accel_dev, ADF_KERNEL_SEC);
-	if (ret)
-		goto err;
-
-	ret = adf_cfg_section_add(accel_dev, "Accelerator0");
-	if (ret)
-		goto err;
-
 	for (i = 0; i < instances; i++) {
 		val = i;
 		bank = i * 2;
@@ -161,10 +164,122 @@ int adf_crypto_dev_config(struct adf_accel_dev *accel_dev)
 	if (ret)
 		goto err;
 
-	set_bit(ADF_STATUS_CONFIGURED, &accel_dev->status);
 	return 0;
 err:
-	dev_err(&GET_DEV(accel_dev), "Failed to start QAT accel dev\n");
+	dev_err(&GET_DEV(accel_dev), "Failed to add configuration for crypto\n");
+	return ret;
+}
+
+static int adf_comp_dev_config(struct adf_accel_dev *accel_dev)
+{
+	char key[ADF_CFG_MAX_KEY_LEN_IN_BYTES];
+	int banks = GET_MAX_BANKS(accel_dev);
+	int cpus = num_online_cpus();
+	unsigned long val;
+	int instances;
+	int ret;
+	int i;
+
+	if (adf_hw_dev_has_compression(accel_dev))
+		instances = min(cpus, banks);
+	else
+		instances = 0;
+
+	for (i = 0; i < instances; i++) {
+		val = i;
+		snprintf(key, sizeof(key), ADF_DC "%d" ADF_RING_DC_BANK_NUM, i);
+		ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC,
+						  key, &val, ADF_DEC);
+		if (ret)
+			goto err;
+
+		val = 512;
+		snprintf(key, sizeof(key), ADF_DC "%d" ADF_RING_DC_SIZE, i);
+		ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC,
+						  key, &val, ADF_DEC);
+		if (ret)
+			goto err;
+
+		val = 0;
+		snprintf(key, sizeof(key), ADF_DC "%d" ADF_RING_DC_TX, i);
+		ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC,
+						  key, &val, ADF_DEC);
+		if (ret)
+			goto err;
+
+		val = 1;
+		snprintf(key, sizeof(key), ADF_DC "%d" ADF_RING_DC_RX, i);
+		ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC,
+						  key, &val, ADF_DEC);
+		if (ret)
+			goto err;
+
+		val = ADF_COALESCING_DEF_TIME;
+		snprintf(key, sizeof(key), ADF_ETRMGR_COALESCE_TIMER_FORMAT, i);
+		ret = adf_cfg_add_key_value_param(accel_dev, "Accelerator0",
+						  key, &val, ADF_DEC);
+		if (ret)
+			goto err;
+	}
+
+	val = i;
+	ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, ADF_NUM_DC,
+					  &val, ADF_DEC);
+	if (ret)
+		goto err;
+
+	val = 0;
+	ret = adf_cfg_add_key_value_param(accel_dev, ADF_KERNEL_SEC, ADF_NUM_CY,
+					  &val, ADF_DEC);
+	if (ret)
+		goto err;
+
+	return 0;
+err:
+	dev_err(&GET_DEV(accel_dev), "Failed to add configuration for compression\n");
+	return ret;
+}
+
+int adf_gen4_dev_config(struct adf_accel_dev *accel_dev)
+{
+	char services[ADF_CFG_MAX_VAL_LEN_IN_BYTES] = {0};
+	int ret;
+
+	ret = adf_cfg_section_add(accel_dev, ADF_KERNEL_SEC);
+	if (ret)
+		goto err;
+
+	ret = adf_cfg_section_add(accel_dev, "Accelerator0");
+	if (ret)
+		goto err;
+
+	ret = adf_cfg_get_param_value(accel_dev, ADF_GENERAL_SEC,
+				      ADF_SERVICES_ENABLED, services);
+	if (ret)
+		goto err;
+
+	ret = sysfs_match_string(services_operations, services);
+	if (ret < 0)
+		goto err;
+
+	switch (ret) {
+	case DEV_CFG_CY:
+		ret = adf_crypto_dev_config(accel_dev);
+		break;
+	case DEV_CFG_DC:
+		ret = adf_comp_dev_config(accel_dev);
+		break;
+	}
+
+	if (ret)
+		goto err;
+
+	set_bit(ADF_STATUS_CONFIGURED, &accel_dev->status);
+
+	return ret;
+
+err:
+	dev_err(&GET_DEV(accel_dev), "Failed to configure QAT driver\n");
 	return ret;
 }
 
@@ -300,7 +415,7 @@ static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	if (ret)
 		goto out_err_disable_aer;
 
-	ret = adf_crypto_dev_config(accel_dev);
+	ret = hw_data->dev_config(accel_dev);
 	if (ret)
 		goto out_err_disable_aer;
 

drivers/crypto/qat/qat_common/Makefile

@@ -16,6 +16,7 @@ intel_qat-objs := adf_cfg.o \
 	adf_gen4_hw_data.o \
 	adf_gen4_pm.o \
 	adf_gen2_dc.o \
+	adf_gen4_dc.o \
 	qat_crypto.o \
 	qat_compression.o \
 	qat_comp_algs.o \

drivers/crypto/qat/qat_common/adf_gen4_dc.c

@@ -0,0 +1,83 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright(c) 2022 Intel Corporation */
+#include "adf_accel_devices.h"
+#include "icp_qat_fw_comp.h"
+#include "icp_qat_hw_20_comp.h"
+#include "adf_gen4_dc.h"
+
+static void qat_comp_build_deflate(void *ctx)
+{
+	struct icp_qat_fw_comp_req *req_tmpl =
+				(struct icp_qat_fw_comp_req *)ctx;
+	struct icp_qat_fw_comn_req_hdr *header = &req_tmpl->comn_hdr;
+	struct icp_qat_fw_comp_req_hdr_cd_pars *cd_pars = &req_tmpl->cd_pars;
+	struct icp_qat_fw_comp_req_params *req_pars = &req_tmpl->comp_pars;
+	struct icp_qat_hw_comp_20_config_csr_upper hw_comp_upper_csr = {0};
+	struct icp_qat_hw_comp_20_config_csr_lower hw_comp_lower_csr = {0};
+	struct icp_qat_hw_decomp_20_config_csr_lower hw_decomp_lower_csr = {0};
+	u32 upper_val;
+	u32 lower_val;
+
+	memset(req_tmpl, 0, sizeof(*req_tmpl));
+	header->hdr_flags =
+		ICP_QAT_FW_COMN_HDR_FLAGS_BUILD(ICP_QAT_FW_COMN_REQ_FLAG_SET);
+	header->service_type = ICP_QAT_FW_COMN_REQ_CPM_FW_COMP;
+	header->service_cmd_id = ICP_QAT_FW_COMP_CMD_STATIC;
+	header->comn_req_flags =
+		ICP_QAT_FW_COMN_FLAGS_BUILD(QAT_COMN_CD_FLD_TYPE_16BYTE_DATA,
+					    QAT_COMN_PTR_TYPE_SGL);
+	header->serv_specif_flags =
+		ICP_QAT_FW_COMP_FLAGS_BUILD(ICP_QAT_FW_COMP_STATELESS_SESSION,
+					    ICP_QAT_FW_COMP_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_ENABLE_SECURE_RAM_USED_AS_INTMD_BUF);
+	hw_comp_lower_csr.skip_ctrl = ICP_QAT_HW_COMP_20_BYTE_SKIP_3BYTE_LITERAL;
+	hw_comp_lower_csr.algo = ICP_QAT_HW_COMP_20_HW_COMP_FORMAT_ILZ77;
+	hw_comp_lower_csr.lllbd = ICP_QAT_HW_COMP_20_LLLBD_CTRL_LLLBD_ENABLED;
+	hw_comp_lower_csr.sd = ICP_QAT_HW_COMP_20_SEARCH_DEPTH_LEVEL_1;
+	hw_comp_lower_csr.hash_update = ICP_QAT_HW_COMP_20_SKIP_HASH_UPDATE_DONT_ALLOW;
+	hw_comp_lower_csr.edmm = ICP_QAT_HW_COMP_20_EXTENDED_DELAY_MATCH_MODE_EDMM_ENABLED;
+	hw_comp_upper_csr.nice = ICP_QAT_HW_COMP_20_CONFIG_CSR_NICE_PARAM_DEFAULT_VAL;
+	hw_comp_upper_csr.lazy = ICP_QAT_HW_COMP_20_CONFIG_CSR_LAZY_PARAM_DEFAULT_VAL;
+
+	upper_val = ICP_QAT_FW_COMP_20_BUILD_CONFIG_UPPER(hw_comp_upper_csr);
+	lower_val = ICP_QAT_FW_COMP_20_BUILD_CONFIG_LOWER(hw_comp_lower_csr);
+
+	cd_pars->u.sl.comp_slice_cfg_word[0] = lower_val;
+	cd_pars->u.sl.comp_slice_cfg_word[1] = upper_val;
+
+	req_pars->crc.legacy.initial_adler = COMP_CPR_INITIAL_ADLER;
+	req_pars->crc.legacy.initial_crc32 = COMP_CPR_INITIAL_CRC;
+	req_pars->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,
+						      ICP_QAT_FW_COMP_NO_CNV_DFX,
+						      ICP_QAT_FW_COMP_CRC_MODE_LEGACY,
+						      ICP_QAT_FW_COMP_NO_XXHASH_ACC,
+						      ICP_QAT_FW_COMP_CNV_ERROR_NONE,
+						      ICP_QAT_FW_COMP_NO_APPEND_CRC,
+						      ICP_QAT_FW_COMP_NO_DROP_DATA);
+
+	/* Fill second half of the template for decompression */
+	memcpy(req_tmpl + 1, req_tmpl, sizeof(*req_tmpl));
+	req_tmpl++;
+	header = &req_tmpl->comn_hdr;
+	header->service_cmd_id = ICP_QAT_FW_COMP_CMD_DECOMPRESS;
+	cd_pars = &req_tmpl->cd_pars;
+
+	hw_decomp_lower_csr.algo = ICP_QAT_HW_DECOMP_20_HW_DECOMP_FORMAT_DEFLATE;
+	lower_val = ICP_QAT_FW_DECOMP_20_BUILD_CONFIG_LOWER(hw_decomp_lower_csr);
+
+	cd_pars->u.sl.comp_slice_cfg_word[0] = lower_val;
+	cd_pars->u.sl.comp_slice_cfg_word[1] = 0;
+}
+
+void adf_gen4_init_dc_ops(struct adf_dc_ops *dc_ops)
+{
+	dc_ops->build_deflate_ctx = qat_comp_build_deflate;
+}
+EXPORT_SYMBOL_GPL(adf_gen4_init_dc_ops);

drivers/crypto/qat/qat_common/adf_gen4_dc.h

@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Copyright(c) 2022 Intel Corporation */
+#ifndef ADF_GEN4_DC_H
+#define ADF_GEN4_DC_H
+
+#include "adf_accel_devices.h"
+
+void adf_gen4_init_dc_ops(struct adf_dc_ops *dc_ops);
+
+#endif /* ADF_GEN4_DC_H */