net/bnxt: add TruFlow API to get SRAM resources

Implement tf_get_sram_resources to return SRAM
partition information, including bank count and
SRAM profile number.

Signed-off-by: Jay Ding <jay.ding@broadcom.com>
Signed-off-by: Venkat Duvvuru <venkatkumar.duvvuru@broadcom.com>
Reviewed-by: Farah Smith <farah.smith@broadcom.com>
Reviewed-by: Randy Schacher <stuart.schacher@broadcom.com>
Acked-by: Ajit Khaparde <ajit.khaparde@broadcom.com>

drivers/net/bnxt/tf_core/tf_core.c

@@ -1831,3 +1831,89 @@ int tf_get_version(struct tf *tfp,
 
 	return 0;
 }
+
+int tf_query_sram_resources(struct tf *tfp,
+			    struct tf_query_sram_resources_parms *parms)
+{
+	int rc;
+	struct tf_dev_info dev;
+	uint16_t max_types;
+	struct tfp_calloc_parms cparms;
+	struct tf_rm_resc_req_entry *query;
+	enum tf_rm_resc_resv_strategy resv_strategy;
+
+	TF_CHECK_PARMS2(tfp, parms);
+
+	/* This function can be called before open session, filter
+	 * out any non-supported device types on the Core side.
+	 */
+	if (parms->device_type != TF_DEVICE_TYPE_THOR) {
+		TFP_DRV_LOG(ERR,
+			    "Unsupported device type %d\n",
+			    parms->device_type);
+		return -ENOTSUP;
+	}
+
+	tf_dev_bind_ops(parms->device_type, &dev);
+
+	if (dev.ops->tf_dev_get_max_types == NULL) {
+		rc = -EOPNOTSUPP;
+		TFP_DRV_LOG(ERR,
+			    "%s: Operation not supported, rc:%s\n",
+			    tf_dir_2_str(parms->dir),
+			    strerror(-rc));
+		return -EOPNOTSUPP;
+	}
+
+	/* Need device max number of elements for the RM QCAPS */
+	rc = dev.ops->tf_dev_get_max_types(tfp, &max_types);
+	if (rc) {
+		TFP_DRV_LOG(ERR,
+			    "Get SRAM resc info failed, rc:%s\n",
+			    strerror(-rc));
+		return rc;
+	}
+
+	/* Allocate memory for RM QCAPS request */
+	cparms.nitems = max_types;
+	cparms.size = sizeof(struct tf_rm_resc_req_entry);
+	cparms.alignment = 0;
+	rc = tfp_calloc(&cparms);
+	if (rc)
+		return rc;
+
+	query = (struct tf_rm_resc_req_entry *)cparms.mem_va;
+	tfp->bp = parms->bp;
+
+	/* Get Firmware Capabilities */
+	rc = tf_msg_session_resc_qcaps(tfp,
+				       &dev,
+				       parms->dir,
+				       max_types,
+				       query,
+				       &resv_strategy,
+				       &parms->sram_profile);
+	if (rc)
+		return rc;
+
+	if (dev.ops->tf_dev_get_sram_resources == NULL) {
+		rc = -EOPNOTSUPP;
+		TFP_DRV_LOG(ERR,
+			    "%s: Operation not supported, rc:%s\n",
+			    tf_dir_2_str(parms->dir),
+			    strerror(-rc));
+		return -EOPNOTSUPP;
+	}
+
+	rc = dev.ops->tf_dev_get_sram_resources((void *)query,
+			parms->bank_resc_count,
+			&parms->dynamic_sram_capable);
+	if (rc) {
+		TFP_DRV_LOG(ERR,
+			    "Get SRAM resc info failed, rc:%s\n",
+			    strerror(-rc));
+		return rc;
+	}
+
+	return 0;
+}

drivers/net/bnxt/tf_core/tf_core.h

@@ -75,6 +75,17 @@ enum tf_wc_num_slice {
 	TF_WC_TCAM_8_SLICE_PER_ROW = 8,
 };
 
+/**
+ * Bank identifier
+ */
+enum tf_sram_bank_id {
+	TF_SRAM_BANK_ID_0,		/**< SRAM Bank 0 id */
+	TF_SRAM_BANK_ID_1,		/**< SRAM Bank 1 id */
+	TF_SRAM_BANK_ID_2,		/**< SRAM Bank 2 id */
+	TF_SRAM_BANK_ID_3,		/**< SRAM Bank 3 id */
+	TF_SRAM_BANK_ID_MAX		/**< SRAM Bank index limit */
+};
+
 /**
  * EEM record AR helper
  *
@@ -2438,4 +2449,56 @@ struct tf_get_version_parms {
  */
 int tf_get_version(struct tf *tfp,
 		   struct tf_get_version_parms *parms);
+
+/**
+ * tf_query_sram_resources parameter definition
+ */
+struct tf_query_sram_resources_parms {
+	/**
+	 * [in] device type
+	 *
+	 * Device type for the session.
+	 */
+	enum tf_device_type device_type;
+
+	/**
+	 * [in] bp
+	 * The pointer to the parent bp struct. This is only used for HWRM
+	 * message passing within the portability layer. The type is struct
+	 * bnxt.
+	 */
+	void *bp;
+
+	/**
+	 * [in] Receive or transmit direction
+	 */
+	enum tf_dir dir;
+
+	/**
+	 * [out] Bank resource count in 8 bytes entry
+	 */
+
+	uint32_t bank_resc_count[TF_SRAM_BANK_ID_MAX];
+
+	/**
+	 * [out] Dynamic SRAM Enable
+	 */
+	bool dynamic_sram_capable;
+
+	/**
+	 * [out] SRAM profile
+	 */
+	uint8_t sram_profile;
+};
+
+/**
+ * Get SRAM resources information
+ *
+ * Used to retrieve sram bank partition information
+ *
+ * Returns success or failure code.
+ */
+int tf_query_sram_resources(struct tf *tfp,
+			    struct tf_query_sram_resources_parms *parms);
+
 #endif /* _TF_CORE_H_ */

drivers/net/bnxt/tf_core/tf_device.h

@@ -1081,6 +1081,26 @@ struct tf_dev_ops {
 				     uint32_t *tcam_caps,
 				     uint32_t *tbl_caps,
 				     uint32_t *em_caps);
+
+	/**
+	 * Device specific function that retrieve the sram resource
+	 *
+	 * [in] query
+	 *   Point to resources query result
+	 *
+	 * [out] sram_bank_caps
+	 *   Pointer to SRAM bank capabilities
+	 *
+	 * [out] dynamic_sram_capable
+	 *   Pointer to dynamic sram capable
+	 *
+	 * Returns
+	 *   - (0) if successful.
+	 *   - (-EINVAL) on failure.
+	 */
+	int (*tf_dev_get_sram_resources)(void *query,
+					 uint32_t *sram_bank_caps,
+					 bool *dynamic_sram_capable);
 };
 
 /**

drivers/net/bnxt/tf_core/tf_device_p4.c

@@ -382,7 +382,8 @@ const struct tf_dev_ops tf_dev_ops_p4_init = {
 	.tf_dev_get_global_cfg = NULL,
 	.tf_dev_get_mailbox = tf_dev_p4_get_mailbox,
 	.tf_dev_word_align = NULL,
-	.tf_dev_map_hcapi_caps = tf_dev_p4_map_hcapi_caps
+	.tf_dev_map_hcapi_caps = tf_dev_p4_map_hcapi_caps,
+	.tf_dev_get_sram_resources = NULL
 };
 
 /**
@@ -445,5 +446,6 @@ const struct tf_dev_ops tf_dev_ops_p4 = {
 	.tf_dev_get_mailbox = tf_dev_p4_get_mailbox,
 	.tf_dev_word_align = tf_dev_p4_word_align,
 	.tf_dev_cfa_key_hash = hcapi_cfa_p4_key_hash,
-	.tf_dev_map_hcapi_caps = tf_dev_p4_map_hcapi_caps
+	.tf_dev_map_hcapi_caps = tf_dev_p4_map_hcapi_caps,
+	.tf_dev_get_sram_resources = NULL
 };

drivers/net/bnxt/tf_core/tf_device_p58.c

@@ -397,6 +397,53 @@ static int tf_dev_p58_map_hcapi_caps(uint64_t hcapi_caps,
 	return 0;
 }
 
+/**
+ * Device specific function that retrieve the sram resource
+ *
+ * [in] query
+ *   Point to resources query result
+ *
+ * [out] sram_bank_caps
+ *   Pointer to SRAM bank capabilities
+ *
+ * [out] dynamic_sram_capable
+ *   Pointer to dynamic sram capable
+ *
+ * Returns
+ *   - (0) if successful.
+ *   - (-EINVAL) on failure.
+ */
+static int tf_dev_p58_get_sram_resources(void *q,
+					 uint32_t *sram_bank_caps,
+					 bool *dynamic_sram_capable)
+{
+	uint32_t i;
+	struct tf_rm_resc_req_entry *query = q;
+
+	for (i = 0; i < CFA_RESOURCE_TYPE_P58_LAST + 1; i++) {
+		switch (query[i].type) {
+		case CFA_RESOURCE_TYPE_P58_SRAM_BANK_0:
+			sram_bank_caps[0] = query[i].max;
+			break;
+		case CFA_RESOURCE_TYPE_P58_SRAM_BANK_1:
+			sram_bank_caps[1] = query[i].max;
+			break;
+		case CFA_RESOURCE_TYPE_P58_SRAM_BANK_2:
+			sram_bank_caps[2] = query[i].max;
+			break;
+		case CFA_RESOURCE_TYPE_P58_SRAM_BANK_3:
+			sram_bank_caps[3] = query[i].max;
+			break;
+		default:
+			break;
+		}
+	}
+
+	*dynamic_sram_capable = false;
+
+	return 0;
+}
+
 /**
  * Truflow P58 device specific functions
  */
@@ -447,7 +494,8 @@ const struct tf_dev_ops tf_dev_ops_p58_init = {
 	.tf_dev_get_global_cfg = NULL,
 	.tf_dev_get_mailbox = tf_dev_p58_get_mailbox,
 	.tf_dev_word_align = NULL,
-	.tf_dev_map_hcapi_caps = tf_dev_p58_map_hcapi_caps
+	.tf_dev_map_hcapi_caps = tf_dev_p58_map_hcapi_caps,
+	.tf_dev_get_sram_resources = tf_dev_p58_get_sram_resources
 };
 
 /**
@@ -511,5 +559,6 @@ const struct tf_dev_ops tf_dev_ops_p58 = {
 	.tf_dev_get_mailbox = tf_dev_p58_get_mailbox,
 	.tf_dev_word_align = tf_dev_p58_word_align,
 	.tf_dev_cfa_key_hash = hcapi_cfa_p58_key_hash,
-	.tf_dev_map_hcapi_caps = tf_dev_p58_map_hcapi_caps
+	.tf_dev_map_hcapi_caps = tf_dev_p58_map_hcapi_caps,
+	.tf_dev_get_sram_resources = tf_dev_p58_get_sram_resources
 };

drivers/net/bnxt/tf_core/tf_msg.c

@@ -380,39 +380,20 @@ tf_msg_session_resc_qcaps(struct tf *tfp,
 			  enum tf_dir dir,
 			  uint16_t size,
 			  struct tf_rm_resc_req_entry *query,
-			  enum tf_rm_resc_resv_strategy *resv_strategy)
+			  enum tf_rm_resc_resv_strategy *resv_strategy,
+			  uint8_t *sram_profile)
 {
 	int rc;
 	int i;
 	struct tfp_send_msg_parms parms = { 0 };
 	struct hwrm_tf_session_resc_qcaps_input req = { 0 };
 	struct hwrm_tf_session_resc_qcaps_output resp = { 0 };
-	uint8_t fw_session_id;
 	struct tf_msg_dma_buf qcaps_buf = { 0 };
 	struct tf_rm_resc_req_entry *data;
 	int dma_size;
-	struct tf_session *tfs;
-
-	/* Retrieve the session information */
-	rc = tf_session_get_session_internal(tfp, &tfs);
-	if (rc) {
-		TFP_DRV_LOG(ERR,
-			    "Failed to lookup session, rc:%s\n",
-			    strerror(-rc));
-		return rc;
-	}
 
 	TF_CHECK_PARMS3(tfp, query, resv_strategy);
 
-	rc = tf_session_get_fw_session_id(tfp, &fw_session_id);
-	if (rc) {
-		TFP_DRV_LOG(ERR,
-			    "%s: Unable to lookup FW id, rc:%s\n",
-			    tf_dir_2_str(dir),
-			    strerror(-rc));
-		return rc;
-	}
-
 	/* Prepare DMA buffer */
 	dma_size = size * sizeof(struct tf_rm_resc_req_entry);
 	rc = tf_msg_alloc_dma_buf(&qcaps_buf, dma_size);
@@ -420,7 +401,7 @@ tf_msg_session_resc_qcaps(struct tf *tfp,
 		return rc;
 
 	/* Populate the request */
-	req.fw_session_id = tfp_cpu_to_le_32(fw_session_id);
+	req.fw_session_id = 0;
 	req.flags = tfp_cpu_to_le_16(dir);
 	req.qcaps_size = size;
 	req.qcaps_addr = tfp_cpu_to_le_64(qcaps_buf.pa_addr);
@@ -460,6 +441,9 @@ tf_msg_session_resc_qcaps(struct tf *tfp,
 	*resv_strategy = resp.flags &
 	      HWRM_TF_SESSION_RESC_QCAPS_OUTPUT_FLAGS_SESS_RESV_STRATEGY_MASK;
 
+	if (sram_profile != NULL)
+		*sram_profile = resp.sram_profile;
+
 cleanup:
 	tf_msg_free_dma_buf(&qcaps_buf);
 

drivers/net/bnxt/tf_core/tf_msg.h

@@ -158,6 +158,9 @@ int tf_msg_session_qcfg(struct tf *tfp);
  * [out] resv_strategy
  *   Pointer to the reservation strategy
  *
+ * [out] sram_profile
+ *   Pointer to the sram profile
+ *
  * Returns:
  *   0 on Success else internal Truflow error
  */
@@ -166,7 +169,8 @@ int tf_msg_session_resc_qcaps(struct tf *tfp,
 			      enum tf_dir dir,
 			      uint16_t size,
 			      struct tf_rm_resc_req_entry *query,
-			      enum tf_rm_resc_resv_strategy *resv_strategy);
+			      enum tf_rm_resc_resv_strategy *resv_strategy,
+			      uint8_t *sram_profile);
 
 /**
  * Sends session HW resource allocation request to TF Firmware

drivers/net/bnxt/tf_core/tf_rm.c

@@ -551,7 +551,8 @@ tf_rm_create_db(struct tf *tfp,
 				       parms->dir,
 				       max_types,
 				       query,
-				       &resv_strategy);
+				       &resv_strategy,
+				       NULL);
 	if (rc)
 		return rc;
 

drivers/net/bnxt/tf_core/tf_sram_mgr.h

@@ -28,16 +28,6 @@
 
 #define TF_SRAM_MGR_BLOCK_SZ_BYTES 64
 #define TF_SRAM_MGR_MIN_SLICE_BYTES 8
-/**
- * Bank identifier
- */
-enum tf_sram_bank_id {
-	TF_SRAM_BANK_ID_0,		/**< SRAM Bank 0 id */
-	TF_SRAM_BANK_ID_1,		/**< SRAM Bank 1 id */
-	TF_SRAM_BANK_ID_2,		/**< SRAM Bank 2 id */
-	TF_SRAM_BANK_ID_3,		/**< SRAM Bank 3 id */
-	TF_SRAM_BANK_ID_MAX		/**< SRAM Bank index limit */
-};
 
 /**
  * TF slice size.