diff options
Diffstat (limited to '')
-rw-r--r-- | drivers/net/ethernet/marvell/octeontx2/af/rvu_reg.c | 71 |
1 files changed, 71 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 000000000000..9d7c135c7965 --- /dev/null +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_reg.c @@ -0,0 +1,71 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Marvell OcteonTx2 RVU Admin Function driver + * + * Copyright (C) 2018 Marvell International Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#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, 3, 0xFFFF, {{0x1000, 0x10E0}, {0x1600, 0x1608}, + {0x1610, 0x1618} } }, + {NIX_TXSCH_LVL_TL2, 2, 0xFFFF, {{0x0E00, 0x0EE0}, {0x1700, 0x1768} } }, + {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; +} |