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// SPDX-License-Identifier: GPL-2.0
/* Marvell MCS driver
*
* Copyright (C) 2022 Marvell.
*/
#include "mcs.h"
#include "mcs_reg.h"
static struct mcs_ops cnf10kb_mcs_ops = {
.mcs_set_hw_capabilities = cnf10kb_mcs_set_hw_capabilities,
.mcs_parser_cfg = cnf10kb_mcs_parser_cfg,
.mcs_tx_sa_mem_map_write = cnf10kb_mcs_tx_sa_mem_map_write,
.mcs_rx_sa_mem_map_write = cnf10kb_mcs_rx_sa_mem_map_write,
.mcs_flowid_secy_map = cnf10kb_mcs_flowid_secy_map,
};
struct mcs_ops *cnf10kb_get_mac_ops(void)
{
return &cnf10kb_mcs_ops;
}
void cnf10kb_mcs_set_hw_capabilities(struct mcs *mcs)
{
struct hwinfo *hw = mcs->hw;
hw->tcam_entries = 64; /* TCAM entries */
hw->secy_entries = 64; /* SecY entries */
hw->sc_entries = 64; /* SC CAM entries */
hw->sa_entries = 128; /* SA entries */
hw->lmac_cnt = 4; /* lmacs/ports per mcs block */
hw->mcs_x2p_intf = 1; /* x2p clabration intf */
hw->mcs_blks = 7; /* MCS blocks */
}
void cnf10kb_mcs_parser_cfg(struct mcs *mcs)
{
u64 reg, val;
/* VLAN Ctag */
val = (0x8100ull & 0xFFFF) | BIT_ULL(20) | BIT_ULL(22);
reg = MCSX_PEX_RX_SLAVE_CUSTOM_TAGX(0);
mcs_reg_write(mcs, reg, val);
reg = MCSX_PEX_TX_SLAVE_CUSTOM_TAGX(0);
mcs_reg_write(mcs, reg, val);
/* VLAN STag */
val = (0x88a8ull & 0xFFFF) | BIT_ULL(20) | BIT_ULL(23);
/* RX */
reg = MCSX_PEX_RX_SLAVE_CUSTOM_TAGX(1);
mcs_reg_write(mcs, reg, val);
/* TX */
reg = MCSX_PEX_TX_SLAVE_CUSTOM_TAGX(1);
mcs_reg_write(mcs, reg, val);
/* Enable custom tage 0 and 1 and sectag */
val = BIT_ULL(0) | BIT_ULL(1) | BIT_ULL(12);
reg = MCSX_PEX_RX_SLAVE_ETYPE_ENABLE;
mcs_reg_write(mcs, reg, val);
reg = MCSX_PEX_TX_SLAVE_ETYPE_ENABLE;
mcs_reg_write(mcs, reg, val);
}
void cnf10kb_mcs_flowid_secy_map(struct mcs *mcs, struct secy_mem_map *map, int dir)
{
u64 reg, val;
val = (map->secy & 0x3F) | (map->ctrl_pkt & 0x1) << 6;
if (dir == MCS_RX) {
reg = MCSX_CPM_RX_SLAVE_SECY_MAP_MEMX(map->flow_id);
} else {
reg = MCSX_CPM_TX_SLAVE_SECY_MAP_MEM_0X(map->flow_id);
mcs_reg_write(mcs, reg, map->sci);
val |= (map->sc & 0x3F) << 7;
reg = MCSX_CPM_TX_SLAVE_SECY_MAP_MEM_1X(map->flow_id);
}
mcs_reg_write(mcs, reg, val);
}
void cnf10kb_mcs_tx_sa_mem_map_write(struct mcs *mcs, struct mcs_tx_sc_sa_map *map)
{
u64 reg, val;
val = (map->sa_index0 & 0x7F) | (map->sa_index1 & 0x7F) << 7;
reg = MCSX_CPM_TX_SLAVE_SA_MAP_MEM_0X(map->sc_id);
mcs_reg_write(mcs, reg, val);
reg = MCSX_CPM_TX_SLAVE_AUTO_REKEY_ENABLE_0;
val = mcs_reg_read(mcs, reg);
if (map->rekey_ena)
val |= BIT_ULL(map->sc_id);
else
val &= ~BIT_ULL(map->sc_id);
mcs_reg_write(mcs, reg, val);
mcs_reg_write(mcs, MCSX_CPM_TX_SLAVE_SA_INDEX0_VLDX(map->sc_id), map->sa_index0_vld);
mcs_reg_write(mcs, MCSX_CPM_TX_SLAVE_SA_INDEX1_VLDX(map->sc_id), map->sa_index1_vld);
mcs_reg_write(mcs, MCSX_CPM_TX_SLAVE_TX_SA_ACTIVEX(map->sc_id), map->tx_sa_active);
}
void cnf10kb_mcs_rx_sa_mem_map_write(struct mcs *mcs, struct mcs_rx_sc_sa_map *map)
{
u64 val, reg;
val = (map->sa_index & 0x7F) | (map->sa_in_use << 7);
reg = MCSX_CPM_RX_SLAVE_SA_MAP_MEMX((4 * map->sc_id) + map->an);
mcs_reg_write(mcs, reg, val);
}
int mcs_set_force_clk_en(struct mcs *mcs, bool set)
{
unsigned long timeout = jiffies + usecs_to_jiffies(2000);
u64 val;
val = mcs_reg_read(mcs, MCSX_MIL_GLOBAL);
if (set) {
val |= BIT_ULL(4);
mcs_reg_write(mcs, MCSX_MIL_GLOBAL, val);
/* Poll till mcsx_mil_ip_gbl_status.mcs_ip_stats_ready value is 1 */
while (!(mcs_reg_read(mcs, MCSX_MIL_IP_GBL_STATUS) & BIT_ULL(0))) {
if (time_after(jiffies, timeout)) {
dev_err(mcs->dev, "MCS set force clk enable failed\n");
break;
}
}
} else {
val &= ~BIT_ULL(4);
mcs_reg_write(mcs, MCSX_MIL_GLOBAL, val);
}
return 0;
}
/* TX SA interrupt is raised only if autorekey is enabled.
* MCS_CPM_TX_SLAVE_SA_MAP_MEM_0X[sc].tx_sa_active bit gets toggled if
* one of two SAs mapped to SC gets expired. If tx_sa_active=0 implies
* SA in SA_index1 got expired else SA in SA_index0 got expired.
*/
void cnf10kb_mcs_tx_pn_thresh_reached_handler(struct mcs *mcs)
{
struct mcs_intr_event event;
struct rsrc_bmap *sc_bmap;
unsigned long rekey_ena;
u64 val, sa_status;
int sc;
sc_bmap = &mcs->tx.sc;
event.mcs_id = mcs->mcs_id;
event.intr_mask = MCS_CPM_TX_PN_THRESH_REACHED_INT;
rekey_ena = mcs_reg_read(mcs, MCSX_CPM_TX_SLAVE_AUTO_REKEY_ENABLE_0);
for_each_set_bit(sc, sc_bmap->bmap, mcs->hw->sc_entries) {
/* Auto rekey is enable */
if (!test_bit(sc, &rekey_ena))
continue;
sa_status = mcs_reg_read(mcs, MCSX_CPM_TX_SLAVE_TX_SA_ACTIVEX(sc));
/* Check if tx_sa_active status had changed */
if (sa_status == mcs->tx_sa_active[sc])
continue;
/* SA_index0 is expired */
val = mcs_reg_read(mcs, MCSX_CPM_TX_SLAVE_SA_MAP_MEM_0X(sc));
if (sa_status)
event.sa_id = val & 0x7F;
else
event.sa_id = (val >> 7) & 0x7F;
event.pcifunc = mcs->tx.sa2pf_map[event.sa_id];
mcs_add_intr_wq_entry(mcs, &event);
}
}
void cnf10kb_mcs_tx_pn_wrapped_handler(struct mcs *mcs)
{
struct mcs_intr_event event = { 0 };
struct rsrc_bmap *sc_bmap;
u64 val;
int sc;
sc_bmap = &mcs->tx.sc;
event.mcs_id = mcs->mcs_id;
event.intr_mask = MCS_CPM_TX_PACKET_XPN_EQ0_INT;
for_each_set_bit(sc, sc_bmap->bmap, mcs->hw->sc_entries) {
val = mcs_reg_read(mcs, MCSX_CPM_TX_SLAVE_SA_MAP_MEM_0X(sc));
if (mcs->tx_sa_active[sc])
/* SA_index1 was used and got expired */
event.sa_id = (val >> 7) & 0x7F;
else
/* SA_index0 was used and got expired */
event.sa_id = val & 0x7F;
event.pcifunc = mcs->tx.sa2pf_map[event.sa_id];
mcs_add_intr_wq_entry(mcs, &event);
}
}
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