1 files changed, 68 insertions, 0 deletions
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_reg.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_reg.c
new file mode 100644
index 000000000..d46ac29ad
--- /dev/null
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_reg.c
@@ -0,0 +1,68 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Marvell RVU Admin Function driver
+ *
+ * Copyright (C) 2018 Marvell.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/pci.h>
+
+#include "rvu_struct.h"
+#include "common.h"
+#include "mbox.h"
+#include "rvu.h"
+
+struct reg_range {
+	u64  start;
+	u64  end;
+};
+
+struct hw_reg_map {
+	u8	regblk;
+	u8	num_ranges;
+	u64	mask;
+#define	 MAX_REG_RANGES	8
+	struct reg_range range[MAX_REG_RANGES];
+};
+
+static struct hw_reg_map txsch_reg_map[NIX_TXSCH_LVL_CNT] = {
+	{NIX_TXSCH_LVL_SMQ, 2, 0xFFFF, {{0x0700, 0x0708}, {0x1400, 0x14C8} } },
+	{NIX_TXSCH_LVL_TL4, 3, 0xFFFF, {{0x0B00, 0x0B08}, {0x0B10, 0x0B18},
+			      {0x1200, 0x12E0} } },
+	{NIX_TXSCH_LVL_TL3, 4, 0xFFFF, {{0x1000, 0x10E0}, {0x1600, 0x1608},
+			      {0x1610, 0x1618}, {0x1700, 0x17C8} } },
+	{NIX_TXSCH_LVL_TL2, 2, 0xFFFF, {{0x0E00, 0x0EE0}, {0x1700, 0x17C8} } },
+	{NIX_TXSCH_LVL_TL1, 1, 0xFFFF, {{0x0C00, 0x0D98} } },
+};
+
+bool rvu_check_valid_reg(int regmap, int regblk, u64 reg)
+{
+	int idx;
+	struct hw_reg_map *map;
+
+	/* Only 64bit offsets */
+	if (reg & 0x07)
+		return false;
+
+	if (regmap == TXSCHQ_HWREGMAP) {
+		if (regblk >= NIX_TXSCH_LVL_CNT)
+			return false;
+		map = &txsch_reg_map[regblk];
+	} else {
+		return false;
+	}
+
+	/* Should never happen */
+	if (map->regblk != regblk)
+		return false;
+
+	reg &= map->mask;
+
+	for (idx = 0; idx < map->num_ranges; idx++) {
+		if (reg >= map->range[idx].start &&
+		    reg < map->range[idx].end)
+			return true;
+	}
+	return false;
+}