[dpdk-dev] [PATCH v4] crypto/ccp: moving vdev to PCI driver

[asomalap@amd.com]

From: Amaranath Somalapuram <Amaranath.Somalapuram@amd.com>

drop all the code duplicating the PCI bus driver
develped for Enable IOMMU in vdev.

Signed-off-by: Amaranath Somalapuram <Amaranath.Somalapuram@amd.com>
---
 drivers/crypto/ccp/ccp_dev.c     |  66 +------------
 drivers/crypto/ccp/ccp_dev.h     |   3 +-
 drivers/crypto/ccp/rte_ccp_pmd.c | 158 +++++++------------------------
 3 files changed, 41 insertions(+), 186 deletions(-)

diff --git a/drivers/crypto/ccp/ccp_dev.c b/drivers/crypto/ccp/ccp_dev.c
index ee6882b8a4..0eb1b0328e 100644
--- a/drivers/crypto/ccp/ccp_dev.c
+++ b/drivers/crypto/ccp/ccp_dev.c
@@ -650,73 +650,17 @@ is_ccp_device(const char *dirname,
 }
 
 static int
-ccp_probe_device(const char *dirname, uint16_t domain,
-		 uint8_t bus, uint8_t devid,
-		 uint8_t function, int ccp_type)
+ccp_probe_device(int ccp_type, struct rte_pci_device *pci_dev)
 {
 	struct ccp_device *ccp_dev = NULL;
-	struct rte_pci_device *pci;
-	char filename[PATH_MAX];
-	unsigned long tmp;
 	int uio_fd = -1;
 
 	ccp_dev = rte_zmalloc("ccp_device", sizeof(*ccp_dev),
 			      RTE_CACHE_LINE_SIZE);
 	if (ccp_dev == NULL)
 		goto fail;
-	pci = &(ccp_dev->pci);
-
-	pci->addr.domain = domain;
-	pci->addr.bus = bus;
-	pci->addr.devid = devid;
-	pci->addr.function = function;
-
-	/* get vendor id */
-	snprintf(filename, sizeof(filename), "%s/vendor", dirname);
-	if (ccp_pci_parse_sysfs_value(filename, &tmp) < 0)
-		goto fail;
-	pci->id.vendor_id = (uint16_t)tmp;
-
-	/* get device id */
-	snprintf(filename, sizeof(filename), "%s/device", dirname);
-	if (ccp_pci_parse_sysfs_value(filename, &tmp) < 0)
-		goto fail;
-	pci->id.device_id = (uint16_t)tmp;
-
-	/* get subsystem_vendor id */
-	snprintf(filename, sizeof(filename), "%s/subsystem_vendor",
-			dirname);
-	if (ccp_pci_parse_sysfs_value(filename, &tmp) < 0)
-		goto fail;
-	pci->id.subsystem_vendor_id = (uint16_t)tmp;
-
-	/* get subsystem_device id */
-	snprintf(filename, sizeof(filename), "%s/subsystem_device",
-			dirname);
-	if (ccp_pci_parse_sysfs_value(filename, &tmp) < 0)
-		goto fail;
-	pci->id.subsystem_device_id = (uint16_t)tmp;
-
-	/* get class_id */
-	snprintf(filename, sizeof(filename), "%s/class",
-			dirname);
-	if (ccp_pci_parse_sysfs_value(filename, &tmp) < 0)
-		goto fail;
-	/* the least 24 bits are valid: class, subclass, program interface */
-	pci->id.class_id = (uint32_t)tmp & RTE_CLASS_ANY_ID;
-
-	/* parse resources */
-	snprintf(filename, sizeof(filename), "%s/resource", dirname);
-	if (ccp_pci_parse_sysfs_resource(filename, pci) < 0)
-		goto fail;
-	if (iommu_mode == 2)
-		pci->kdrv = RTE_PCI_KDRV_VFIO;
-	else if (iommu_mode == 0)
-		pci->kdrv = RTE_PCI_KDRV_IGB_UIO;
-	else if (iommu_mode == 1)
-		pci->kdrv = RTE_PCI_KDRV_UIO_GENERIC;
 
-	rte_pci_map_device(pci);
+	ccp_dev->pci = *pci_dev;
 
 	/* device is valid, add in list */
 	if (ccp_add_device(ccp_dev, ccp_type)) {
@@ -735,7 +679,8 @@ ccp_probe_device(const char *dirname, uint16_t domain,
 }
 
 int
-ccp_probe_devices(const struct rte_pci_id *ccp_id)
+ccp_probe_devices(struct rte_pci_device *pci_dev,
+		const struct rte_pci_id *ccp_id)
 {
 	int dev_cnt = 0;
 	int ccp_type = 0;
@@ -767,8 +712,7 @@ ccp_probe_devices(const struct rte_pci_id *ccp_id)
 		if (is_ccp_device(dirname, ccp_id, &ccp_type)) {
 			printf("CCP : Detected CCP device with ID = 0x%x\n",
 			       ccp_id[ccp_type].device_id);
-			ret = ccp_probe_device(dirname, domain, bus, devid,
-					       function, ccp_type);
+			ret = ccp_probe_device(ccp_type, pci_dev);
 			if (ret == 0)
 				dev_cnt++;
 		}
diff --git a/drivers/crypto/ccp/ccp_dev.h b/drivers/crypto/ccp/ccp_dev.h
index 37e04218ce..ca5145c278 100644
--- a/drivers/crypto/ccp/ccp_dev.h
+++ b/drivers/crypto/ccp/ccp_dev.h
@@ -473,7 +473,8 @@ int ccp_dev_start(struct rte_cryptodev *dev);
  * @param ccp_id rte_pci_id list for supported CCP devices
  * @return no. of successfully initialized CCP devices
  */
-int ccp_probe_devices(const struct rte_pci_id *ccp_id);
+int ccp_probe_devices(struct rte_pci_device *pci_dev,
+		const struct rte_pci_id *ccp_id);
 
 /**
  * allocate a ccp command queue
diff --git a/drivers/crypto/ccp/rte_ccp_pmd.c b/drivers/crypto/ccp/rte_ccp_pmd.c
index ba379a19f3..84a650d9f5 100644
--- a/drivers/crypto/ccp/rte_ccp_pmd.c
+++ b/drivers/crypto/ccp/rte_ccp_pmd.c
@@ -47,111 +47,6 @@ enum ccp_pmd_auth_opt {
 	CCP_PMD_AUTH_OPT_CPU,
 };
 
-/** parse integer from integer argument */
-static int
-parse_integer_arg(const char *key __rte_unused,
-		  const char *value, void *extra_args)
-{
-	int *i = (int *) extra_args;
-
-	*i = atoi(value);
-	if (*i < 0) {
-		CCP_LOG_ERR("Argument has to be positive.\n");
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-/** parse name argument */
-static int
-parse_name_arg(const char *key __rte_unused,
-	       const char *value, void *extra_args)
-{
-	struct rte_cryptodev_pmd_init_params *params = extra_args;
-
-	if (strlen(value) >= RTE_CRYPTODEV_NAME_MAX_LEN - 1) {
-		CCP_LOG_ERR("Invalid name %s, should be less than "
-			    "%u bytes.\n", value,
-			    RTE_CRYPTODEV_NAME_MAX_LEN - 1);
-		return -EINVAL;
-	}
-
-	strncpy(params->name, value, RTE_CRYPTODEV_NAME_MAX_LEN);
-
-	return 0;
-}
-
-/** parse authentication operation option */
-static int
-parse_auth_opt_arg(const char *key __rte_unused,
-		   const char *value, void *extra_args)
-{
-	struct ccp_pmd_init_params *params = extra_args;
-	int i;
-
-	i = atoi(value);
-	if (i < CCP_PMD_AUTH_OPT_CCP || i > CCP_PMD_AUTH_OPT_CPU) {
-		CCP_LOG_ERR("Invalid ccp pmd auth option. "
-			    "0->auth on CCP(default), "
-			    "1->auth on CPU\n");
-		return -EINVAL;
-	}
-	params->auth_opt = i;
-	return 0;
-}
-
-static int
-ccp_pmd_parse_input_args(struct ccp_pmd_init_params *params,
-			 const char *input_args)
-{
-	struct rte_kvargs *kvlist = NULL;
-	int ret = 0;
-
-	if (params == NULL)
-		return -EINVAL;
-
-	if (input_args) {
-		kvlist = rte_kvargs_parse(input_args,
-					  ccp_pmd_valid_params);
-		if (kvlist == NULL)
-			return -1;
-
-		ret = rte_kvargs_process(kvlist,
-					 CCP_CRYPTODEV_PARAM_MAX_NB_QP,
-					 &parse_integer_arg,
-					 &params->def_p.max_nb_queue_pairs);
-		if (ret < 0)
-			goto free_kvlist;
-
-		ret = rte_kvargs_process(kvlist,
-					 CCP_CRYPTODEV_PARAM_SOCKET_ID,
-					 &parse_integer_arg,
-					 &params->def_p.socket_id);
-		if (ret < 0)
-			goto free_kvlist;
-
-		ret = rte_kvargs_process(kvlist,
-					 CCP_CRYPTODEV_PARAM_NAME,
-					 &parse_name_arg,
-					 &params->def_p);
-		if (ret < 0)
-			goto free_kvlist;
-
-		ret = rte_kvargs_process(kvlist,
-					 CCP_CRYPTODEV_PARAM_AUTH_OPT,
-					 &parse_auth_opt_arg,
-					 params);
-		if (ret < 0)
-			goto free_kvlist;
-
-	}
-
-free_kvlist:
-	rte_kvargs_free(kvlist);
-	return ret;
-}
-
 static struct ccp_session *
 get_ccp_session(struct ccp_qp *qp, struct rte_crypto_op *op)
 {
@@ -300,12 +195,21 @@ static struct rte_pci_id ccp_pci_id[] = {
 
 /** Remove ccp pmd */
 static int
-cryptodev_ccp_remove(struct rte_vdev_device *dev)
+cryptodev_ccp_remove(struct rte_pci_device *pci_dev)
 {
-	const char *name;
+	char name[RTE_CRYPTODEV_NAME_MAX_LEN];
+	struct rte_cryptodev *dev;
+
+	if (pci_dev == NULL)
+		return -EINVAL;
+
+	rte_pci_device_name(&pci_dev->addr, name, sizeof(name));
+
+	dev = rte_cryptodev_pmd_get_named_dev(name);
+	if (dev == NULL)
+		return -ENODEV;
 
 	ccp_pmd_init_done = 0;
-	name = rte_vdev_device_name(dev);
 	rte_free(sha_ctx);
 	if (name == NULL)
 		return -EINVAL;
@@ -313,14 +217,15 @@ cryptodev_ccp_remove(struct rte_vdev_device *dev)
 	RTE_LOG(INFO, PMD, "Closing ccp device %s on numa socket %u\n",
 			name, rte_socket_id());
 
-	return 0;
+	return rte_cryptodev_pmd_destroy(dev);
 }
 
 /** Create crypto device */
 static int
 cryptodev_ccp_create(const char *name,
-		     struct rte_vdev_device *vdev,
-		     struct ccp_pmd_init_params *init_params)
+		     struct rte_pci_device *pci_dev,
+		     struct ccp_pmd_init_params *init_params,
+		     struct rte_pci_driver *pci_drv)
 {
 	struct rte_cryptodev *dev;
 	struct ccp_private *internals;
@@ -330,14 +235,14 @@ cryptodev_ccp_create(const char *name,
 			sizeof(init_params->def_p.name));
 
 	dev = rte_cryptodev_pmd_create(init_params->def_p.name,
-				       &vdev->device,
+				       &pci_dev->device,
 				       &init_params->def_p);
 	if (dev == NULL) {
 		CCP_LOG_ERR("failed to create cryptodev vdev");
 		goto init_error;
 	}
 
-	cryptodev_cnt = ccp_probe_devices(ccp_pci_id);
+	cryptodev_cnt = ccp_probe_devices(pci_dev, ccp_pci_id);
 
 	if (cryptodev_cnt == 0) {
 		CCP_LOG_ERR("failed to detect CCP crypto device");
@@ -345,6 +250,8 @@ cryptodev_ccp_create(const char *name,
 	}
 
 	printf("CCP : Crypto device count = %d\n", cryptodev_cnt);
+	dev->device = &pci_dev->device;
+	dev->device->driver = &pci_drv->driver;
 	dev->driver_id = ccp_cryptodev_driver_id;
 
 	/* register rx/tx burst functions for data path */
@@ -368,17 +275,18 @@ cryptodev_ccp_create(const char *name,
 init_error:
 	CCP_LOG_ERR("driver %s: %s() failed",
 		    init_params->def_p.name, __func__);
-	cryptodev_ccp_remove(vdev);
+	cryptodev_ccp_remove(pci_dev);
 
 	return -EFAULT;
 }
 
 /** Probe ccp pmd */
 static int
-cryptodev_ccp_probe(struct rte_vdev_device *vdev)
+cryptodev_ccp_probe(struct rte_pci_driver *pci_drv __rte_unused,
+	struct rte_pci_device *pci_dev)
 {
 	int rc = 0;
-	const char *name;
+	char name[RTE_CRYPTODEV_NAME_MAX_LEN];
 	struct ccp_pmd_init_params init_params = {
 		.def_p = {
 			"",
@@ -388,19 +296,16 @@ cryptodev_ccp_probe(struct rte_vdev_device *vdev)
 		},
 		.auth_opt = CCP_PMD_AUTH_OPT_CCP,
 	};
-	const char *input_args;
 
 	sha_ctx = (void *)rte_malloc(NULL, SHA512_DIGEST_SIZE, 64);
 	if (ccp_pmd_init_done) {
 		RTE_LOG(INFO, PMD, "CCP PMD already initialized\n");
 		return -EFAULT;
 	}
-	name = rte_vdev_device_name(vdev);
-	if (name == NULL)
+	rte_pci_device_name(&pci_dev->addr, name, sizeof(name));
+	if (name[0] == '\0')
 		return -EINVAL;
 
-	input_args = rte_vdev_device_args(vdev);
-	ccp_pmd_parse_input_args(&init_params, input_args);
 	init_params.def_p.max_nb_queue_pairs = CCP_PMD_MAX_QUEUE_PAIRS;
 
 	RTE_LOG(INFO, PMD, "Initialising %s on NUMA node %d\n", name,
@@ -410,21 +315,26 @@ cryptodev_ccp_probe(struct rte_vdev_device *vdev)
 	RTE_LOG(INFO, PMD, "Authentication offload to %s\n",
 		((init_params.auth_opt == 0) ? "CCP" : "CPU"));
 
-	rc = cryptodev_ccp_create(name, vdev, &init_params);
+	rte_pci_device_name(&pci_dev->addr, name, sizeof(name));
+
+	rc = cryptodev_ccp_create(name, pci_dev, &init_params, pci_drv);
 	if (rc)
 		return rc;
 	ccp_pmd_init_done = 1;
 	return 0;
 }
 
-static struct rte_vdev_driver cryptodev_ccp_pmd_drv = {
+static struct rte_pci_driver cryptodev_ccp_pmd_drv = {
+	.id_table = ccp_pci_id,
+	.drv_flags = RTE_PCI_DRV_NEED_MAPPING,
 	.probe = cryptodev_ccp_probe,
 	.remove = cryptodev_ccp_remove
 };
 
 static struct cryptodev_driver ccp_crypto_drv;
 
-RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_CCP_PMD, cryptodev_ccp_pmd_drv);
+RTE_PMD_REGISTER_PCI(CRYPTODEV_NAME_CCP_PMD, cryptodev_ccp_pmd_drv);
+RTE_PMD_REGISTER_KMOD_DEP(CRYPTODEV_NAME_CCP_PMD, "* igb_uio | uio_pci_generic | vfio-pci");
 RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_CCP_PMD,
 	"max_nb_queue_pairs=<int> "
 	"socket_id=<int> "
-- 
2.25.1