[PATCH net-next 05/14] bnxt_en: Add the new firmware API to query hardware resources.

[Michael Chan <michael.chan@broadcom.com>]

The new API HWRM_FUNC_RESOURCE_QCAPS provides min and max hardware
resources.  Use the new API when it is supported by firmware.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 56 ++++++++++++++++++++++++++++++-
 drivers/net/ethernet/broadcom/bnxt/bnxt.h |  1 +
 2 files changed, 56 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index dce4af9..f87e0bd 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -4791,7 +4791,46 @@ static int bnxt_hwrm_func_qcfg(struct bnxt *bp)
 	return rc;
 }
 
-static int bnxt_hwrm_func_qcaps(struct bnxt *bp)
+static int bnxt_hwrm_func_resc_qcaps(struct bnxt *bp)
+{
+	struct hwrm_func_resource_qcaps_output *resp = bp->hwrm_cmd_resp_addr;
+	struct hwrm_func_resource_qcaps_input req = {0};
+	struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
+	int rc;
+
+	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_RESOURCE_QCAPS, -1, -1);
+	req.fid = cpu_to_le16(0xffff);
+
+	mutex_lock(&bp->hwrm_cmd_lock);
+	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	if (rc) {
+		rc = -EIO;
+		goto hwrm_func_resc_qcaps_exit;
+	}
+
+	hw_resc->min_rsscos_ctxs = le16_to_cpu(resp->min_rsscos_ctx);
+	hw_resc->max_rsscos_ctxs = le16_to_cpu(resp->max_rsscos_ctx);
+	hw_resc->min_cp_rings = le16_to_cpu(resp->min_cmpl_rings);
+	hw_resc->max_cp_rings = le16_to_cpu(resp->max_cmpl_rings);
+	hw_resc->min_tx_rings = le16_to_cpu(resp->min_tx_rings);
+	hw_resc->max_tx_rings = le16_to_cpu(resp->max_tx_rings);
+	hw_resc->min_rx_rings = le16_to_cpu(resp->min_rx_rings);
+	hw_resc->max_rx_rings = le16_to_cpu(resp->max_rx_rings);
+	hw_resc->min_hw_ring_grps = le16_to_cpu(resp->min_hw_ring_grps);
+	hw_resc->max_hw_ring_grps = le16_to_cpu(resp->max_hw_ring_grps);
+	hw_resc->min_l2_ctxs = le16_to_cpu(resp->min_l2_ctxs);
+	hw_resc->max_l2_ctxs = le16_to_cpu(resp->max_l2_ctxs);
+	hw_resc->min_vnics = le16_to_cpu(resp->min_vnics);
+	hw_resc->max_vnics = le16_to_cpu(resp->max_vnics);
+	hw_resc->min_stat_ctxs = le16_to_cpu(resp->min_stat_ctx);
+	hw_resc->max_stat_ctxs = le16_to_cpu(resp->max_stat_ctx);
+
+hwrm_func_resc_qcaps_exit:
+	mutex_unlock(&bp->hwrm_cmd_lock);
+	return rc;
+}
+
+static int __bnxt_hwrm_func_qcaps(struct bnxt *bp)
 {
 	int rc = 0;
 	struct hwrm_func_qcaps_input req = {0};
@@ -4859,6 +4898,21 @@ static int bnxt_hwrm_func_qcaps(struct bnxt *bp)
 	return rc;
 }
 
+static int bnxt_hwrm_func_qcaps(struct bnxt *bp)
+{
+	int rc;
+
+	rc = __bnxt_hwrm_func_qcaps(bp);
+	if (rc)
+		return rc;
+	if (bp->hwrm_spec_code >= 0x10803) {
+		rc = bnxt_hwrm_func_resc_qcaps(bp);
+		if (!rc)
+			bp->flags |= BNXT_FLAG_NEW_RM;
+	}
+	return 0;
+}
+
 static int bnxt_hwrm_func_reset(struct bnxt *bp)
 {
 	struct hwrm_func_reset_input req = {0};
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index b844615..9d12985 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -1144,6 +1144,7 @@ struct bnxt {
 	#define BNXT_FLAG_FW_DCBX_AGENT	0x800000
 	#define BNXT_FLAG_CHIP_NITRO_A0	0x1000000
 	#define BNXT_FLAG_DIM		0x2000000
+	#define BNXT_FLAG_NEW_RM	0x8000000
 
 	#define BNXT_FLAG_ALL_CONFIG_FEATS (BNXT_FLAG_TPA |		\
 					    BNXT_FLAG_RFS |		\
-- 
1.8.3.1