[dpdk-dev] [PATCH v6 17/38] bnxt: add HWRM vnic alloc function

[Stephen Hurd]

From: Ajit Khaparde <ajit.khaparde at broadcom.com>

This requires a group info array in struct bnxt, so add that, we can save
the max size from the func_qcap response, and alloc/free in init/uninit

A VNIC represents a virtual interface.
It is a resource in the RX path of the chip and is used to setup various
target actions such as RSS, MAC filtering etc.. for the physical function
in use.

New HWRM call:
bnxt_hwrm_vnic_alloc:
	Allocates a VNIC resource in the hardware.

Signed-off-by: Ajit Khaparde <ajit.khaparde at broadcom.com>
Signed-off-by: Stephen Hurd <stephen.hurd at broadcom.com>
Reviewed-by: David Christensen <david.christensen at broadcom.com>

--
v5:
Add more description in commit log
Reorder footer
---
 drivers/net/bnxt/bnxt.h                |  2 +
 drivers/net/bnxt/bnxt_hwrm.c           | 32 +++++++++++
 drivers/net/bnxt/bnxt_hwrm.h           |  2 +
 drivers/net/bnxt/hsi_struct_def_dpdk.h | 99 ++++++++++++++++++++++++++++++++++
 4 files changed, 135 insertions(+)

diff --git a/drivers/net/bnxt/bnxt.h b/drivers/net/bnxt/bnxt.h
index f7cf9d1..df1f771 100644
--- a/drivers/net/bnxt/bnxt.h
+++ b/drivers/net/bnxt/bnxt.h
@@ -141,6 +141,8 @@ struct bnxt {
 
 	/* Default completion ring */
 	struct bnxt_cp_ring_info	*def_cp_ring;
+	uint32_t		max_ring_grps;
+	struct bnxt_ring_grp_info	*grp_info;
 
 	unsigned int		nr_vnics;
 
diff --git a/drivers/net/bnxt/bnxt_hwrm.c b/drivers/net/bnxt/bnxt_hwrm.c
index d1ca60a..fb0b7bf 100644
--- a/drivers/net/bnxt/bnxt_hwrm.c
+++ b/drivers/net/bnxt/bnxt_hwrm.c
@@ -43,6 +43,7 @@
 #include "bnxt_filter.h"
 #include "bnxt_hwrm.h"
 #include "bnxt_rxq.h"
+#include "bnxt_ring.h"
 #include "bnxt_txq.h"
 #include "bnxt_vnic.h"
 #include "hsi_struct_def_dpdk.h"
@@ -235,6 +236,7 @@ int bnxt_hwrm_func_qcaps(struct bnxt *bp)
 
 	HWRM_CHECK_RESULT;
 
+	bp->max_ring_grps = rte_le_to_cpu_32(resp->max_hw_ring_grps);
 	if (BNXT_PF(bp)) {
 		struct bnxt_pf_info *pf = &bp->pf;
 
@@ -521,6 +523,36 @@ int bnxt_hwrm_stat_clear(struct bnxt *bp, struct bnxt_cp_ring_info *cpr)
 	return rc;
 }
 
+int bnxt_hwrm_vnic_alloc(struct bnxt *bp, struct bnxt_vnic_info *vnic)
+{
+	int rc = 0, i, j;
+	struct hwrm_vnic_alloc_input req = {.req_type = 0 };
+	struct hwrm_vnic_alloc_output *resp = bp->hwrm_cmd_resp_addr;
+
+	/* map ring groups to this vnic */
+	for (i = vnic->start_grp_id, j = 0; i <= vnic->end_grp_id; i++, j++) {
+		if (bp->grp_info[i].fw_grp_id == (uint16_t)HWRM_NA_SIGNATURE) {
+			RTE_LOG(ERR, PMD,
+				"Not enough ring groups avail:%x req:%x\n", j,
+				(vnic->end_grp_id - vnic->start_grp_id) + 1);
+			break;
+		}
+		vnic->fw_grp_ids[j] = bp->grp_info[i].fw_grp_id;
+	}
+
+	vnic->fw_rss_cos_lb_ctx = (uint16_t)HWRM_NA_SIGNATURE;
+	vnic->ctx_is_rss_cos_lb = HW_CONTEXT_NONE;
+
+	HWRM_PREP(req, VNIC_ALLOC, -1, resp);
+
+	rc = bnxt_hwrm_send_message(bp, &req, sizeof(req));
+
+	HWRM_CHECK_RESULT;
+
+	vnic->fw_vnic_id = rte_le_to_cpu_16(resp->vnic_id);
+	return rc;
+}
+
 /*
  * HWRM utility functions
  */
diff --git a/drivers/net/bnxt/bnxt_hwrm.h b/drivers/net/bnxt/bnxt_hwrm.h
index 2679d09..7d09773 100644
--- a/drivers/net/bnxt/bnxt_hwrm.h
+++ b/drivers/net/bnxt/bnxt_hwrm.h
@@ -63,6 +63,8 @@ int bnxt_hwrm_stat_clear(struct bnxt *bp, struct bnxt_cp_ring_info *cpr);
 
 int bnxt_hwrm_ver_get(struct bnxt *bp);
 
+int bnxt_hwrm_vnic_alloc(struct bnxt *bp, struct bnxt_vnic_info *vnic);
+
 int bnxt_clear_all_hwrm_stat_ctxs(struct bnxt *bp);
 void bnxt_free_hwrm_resources(struct bnxt *bp);
 int bnxt_alloc_hwrm_resources(struct bnxt *bp);
diff --git a/drivers/net/bnxt/hsi_struct_def_dpdk.h b/drivers/net/bnxt/hsi_struct_def_dpdk.h
index 6209368..eedd368 100644
--- a/drivers/net/bnxt/hsi_struct_def_dpdk.h
+++ b/drivers/net/bnxt/hsi_struct_def_dpdk.h
@@ -89,6 +89,7 @@ struct ctx_hw_stats64 {
 #define HWRM_FUNC_DRV_RGTR		(UINT32_C(0x1d))
 #define HWRM_PORT_PHY_CFG		(UINT32_C(0x20))
 #define HWRM_QUEUE_QPORTCFG		(UINT32_C(0x30))
+#define HWRM_VNIC_ALLOC			(UINT32_C(0x40))
 #define HWRM_CFA_L2_FILTER_ALLOC	(UINT32_C(0x90))
 #define HWRM_CFA_L2_FILTER_FREE		(UINT32_C(0x91))
 #define HWRM_CFA_L2_FILTER_CFG		(UINT32_C(0x92))
@@ -3119,6 +3120,104 @@ struct hwrm_stat_ctx_clr_stats_output {
 	uint8_t valid;
 } __attribute__((packed));
 
+/* hwrm_vnic_alloc */
+/*
+ * Description: This VNIC is a resource in the RX side of the chip that is used
+ * to represent a virtual host "interface". # At the time of VNIC allocation or
+ * configuration, the function can specify whether it wants the requested VNIC
+ * to be the default VNIC for the function or not. # If a function requests
+ * allocation of a VNIC for the first time and a VNIC is successfully allocated
+ * by the HWRM, then the HWRM shall make the allocated VNIC as the default VNIC
+ * for that function. # The default VNIC shall be used for the default action
+ * for a partition or function. # For each VNIC allocated on a function, a
+ * mapping on the RX side to map the allocated VNIC to source virtual interface
+ * shall be performed by the HWRM. This should be hidden to the function driver
+ * requesting the VNIC allocation. This enables broadcast/multicast replication
+ * with source knockout. # If multicast replication with source knockout is
+ * enabled, then the internal VNIC to SVIF mapping data structures shall be
+ * programmed at the time of VNIC allocation.
+ */
+
+/* Input (24 bytes) */
+struct hwrm_vnic_alloc_input {
+	/*
+	 * This value indicates what type of request this is. The format for the
+	 * rest of the command is determined by this field.
+	 */
+	uint16_t req_type;
+
+	/*
+	 * This value indicates the what completion ring the request will be
+	 * optionally completed on. If the value is -1, then no CR completion
+	 * will be generated. Any other value must be a valid CR ring_id value
+	 * for this function.
+	 */
+	uint16_t cmpl_ring;
+
+	/* This value indicates the command sequence number. */
+	uint16_t seq_id;
+
+	/*
+	 * Target ID of this command. 0x0 - 0xFFF8 - Used for function ids
+	 * 0xFFF8 - 0xFFFE - Reserved for internal processors 0xFFFF - HWRM
+	 */
+	uint16_t target_id;
+
+	/*
+	 * This is the host address where the response will be written when the
+	 * request is complete. This area must be 16B aligned and must be
+	 * cleared to zero before the request is made.
+	 */
+	uint64_t resp_addr;
+
+	/*
+	 * When this bit is '1', this VNIC is requested to be the default VNIC
+	 * for this function.
+	 */
+	#define HWRM_VNIC_ALLOC_INPUT_FLAGS_DEFAULT                UINT32_C(0x1)
+	uint32_t flags;
+
+	uint32_t unused_0;
+} __attribute__((packed));
+
+/* Output (16 bytes) */
+struct hwrm_vnic_alloc_output {
+	/*
+	 * Pass/Fail or error type Note: receiver to verify the in parameters,
+	 * and fail the call with an error when appropriate
+	 */
+	uint16_t error_code;
+
+	/* This field returns the type of original request. */
+	uint16_t req_type;
+
+	/* This field provides original sequence number of the command. */
+	uint16_t seq_id;
+
+	/*
+	 * This field is the length of the response in bytes. The last byte of
+	 * the response is a valid flag that will read as '1' when the command
+	 * has been completely written to memory.
+	 */
+	uint16_t resp_len;
+
+	/* Logical vnic ID */
+	uint32_t vnic_id;
+
+	uint8_t unused_0;
+	uint8_t unused_1;
+	uint8_t unused_2;
+
+	/*
+	 * This field is used in Output records to indicate that the output is
+	 * completely written to RAM. This field should be read as '1' to
+	 * indicate that the output has been completely written. When writing a
+	 * command completion or response to an internal processor, the order of
+	 * writes has to be such that this field is written last.
+	 */
+	uint8_t valid;
+} __attribute__((packed));
+
 /* hwrm_vnic_rss_cfg */
 /* Description: This function is used to enable RSS configuration. */
 
-- 
1.9.1