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linux-zen-server/drivers/net/ethernet/marvell/octeontx2/af/mcs.c

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Initial commit
2023-08-30 17:53:23 +02:00
// SPDX-License-Identifier: GPL-2.0
/* Marvell MCS driver
*
* Copyright (C) 2022 Marvell.
*/
#include <linux/bitfield.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/module.h>
#include <linux/pci.h>
#include "mcs.h"
#include "mcs_reg.h"
#define DRV_NAME "Marvell MCS Driver"
#define PCI_CFG_REG_BAR_NUM 0
static const struct pci_device_id mcs_id_table[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, PCI_DEVID_CN10K_MCS) },
{ 0, } /* end of table */
};
static LIST_HEAD(mcs_list);
void mcs_get_tx_secy_stats(struct mcs *mcs, struct mcs_secy_stats *stats, int id)
{
u64 reg;
reg = MCSX_CSE_TX_MEM_SLAVE_IFOUTCTLBCPKTSX(id);
stats->ctl_pkt_bcast_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_TX_MEM_SLAVE_IFOUTCTLMCPKTSX(id);
stats->ctl_pkt_mcast_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_TX_MEM_SLAVE_IFOUTCTLOCTETSX(id);
stats->ctl_octet_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_TX_MEM_SLAVE_IFOUTCTLUCPKTSX(id);
stats->ctl_pkt_ucast_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_TX_MEM_SLAVE_IFOUTUNCTLBCPKTSX(id);
stats->unctl_pkt_bcast_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_TX_MEM_SLAVE_IFOUTUNCTLMCPKTSX(id);
stats->unctl_pkt_mcast_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_TX_MEM_SLAVE_IFOUTUNCTLOCTETSX(id);
stats->unctl_octet_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_TX_MEM_SLAVE_IFOUTUNCTLUCPKTSX(id);
stats->unctl_pkt_ucast_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_TX_MEM_SLAVE_OUTOCTETSSECYENCRYPTEDX(id);
stats->octet_encrypted_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_TX_MEM_SLAVE_OUTOCTETSSECYPROTECTEDX(id);
stats->octet_protected_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_TX_MEM_SLAVE_OUTPKTSSECYNOACTIVESAX(id);
stats->pkt_noactivesa_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_TX_MEM_SLAVE_OUTPKTSSECYTOOLONGX(id);
stats->pkt_toolong_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_TX_MEM_SLAVE_OUTPKTSSECYUNTAGGEDX(id);
stats->pkt_untagged_cnt = mcs_reg_read(mcs, reg);
}
void mcs_get_rx_secy_stats(struct mcs *mcs, struct mcs_secy_stats *stats, int id)
{
u64 reg;
reg = MCSX_CSE_RX_MEM_SLAVE_IFINCTLBCPKTSX(id);
stats->ctl_pkt_bcast_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_RX_MEM_SLAVE_IFINCTLMCPKTSX(id);
stats->ctl_pkt_mcast_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_RX_MEM_SLAVE_IFINCTLOCTETSX(id);
stats->ctl_octet_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_RX_MEM_SLAVE_IFINCTLUCPKTSX(id);
stats->ctl_pkt_ucast_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_RX_MEM_SLAVE_IFINUNCTLBCPKTSX(id);
stats->unctl_pkt_bcast_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_RX_MEM_SLAVE_IFINUNCTLMCPKTSX(id);
stats->unctl_pkt_mcast_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_RX_MEM_SLAVE_IFINUNCTLOCTETSX(id);
stats->unctl_octet_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_RX_MEM_SLAVE_IFINUNCTLUCPKTSX(id);
stats->unctl_pkt_ucast_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_RX_MEM_SLAVE_INOCTETSSECYDECRYPTEDX(id);
stats->octet_decrypted_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_RX_MEM_SLAVE_INOCTETSSECYVALIDATEX(id);
stats->octet_validated_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSCTRLPORTDISABLEDX(id);
stats->pkt_port_disabled_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSECYBADTAGX(id);
stats->pkt_badtag_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSECYNOSAX(id);
stats->pkt_nosa_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSECYNOSAERRORX(id);
stats->pkt_nosaerror_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSECYTAGGEDCTLX(id);
stats->pkt_tagged_ctl_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSECYUNTAGGEDORNOTAGX(id);
stats->pkt_untaged_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSECYCTLX(id);
stats->pkt_ctl_cnt = mcs_reg_read(mcs, reg);
if (mcs->hw->mcs_blks > 1) {
reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSECYNOTAGX(id);
stats->pkt_notag_cnt = mcs_reg_read(mcs, reg);
}
}
void mcs_get_flowid_stats(struct mcs *mcs, struct mcs_flowid_stats *stats,
int id, int dir)
{
u64 reg;
if (dir == MCS_RX)
reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSFLOWIDTCAMHITX(id);
else
reg = MCSX_CSE_TX_MEM_SLAVE_OUTPKTSFLOWIDTCAMHITX(id);
stats->tcam_hit_cnt = mcs_reg_read(mcs, reg);
}
void mcs_get_port_stats(struct mcs *mcs, struct mcs_port_stats *stats,
int id, int dir)
{
u64 reg;
if (dir == MCS_RX) {
reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSFLOWIDTCAMMISSX(id);
stats->tcam_miss_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSPARSEERRX(id);
stats->parser_err_cnt = mcs_reg_read(mcs, reg);
if (mcs->hw->mcs_blks > 1) {
reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSEARLYPREEMPTERRX(id);
stats->preempt_err_cnt = mcs_reg_read(mcs, reg);
}
} else {
reg = MCSX_CSE_TX_MEM_SLAVE_OUTPKTSFLOWIDTCAMMISSX(id);
stats->tcam_miss_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_TX_MEM_SLAVE_OUTPKTSPARSEERRX(id);
stats->parser_err_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_TX_MEM_SLAVE_OUTPKTSSECTAGINSERTIONERRX(id);
stats->sectag_insert_err_cnt = mcs_reg_read(mcs, reg);
}
}
void mcs_get_sa_stats(struct mcs *mcs, struct mcs_sa_stats *stats, int id, int dir)
{
u64 reg;
if (dir == MCS_RX) {
reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSAINVALIDX(id);
stats->pkt_invalid_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSANOTUSINGSAERRORX(id);
stats->pkt_nosaerror_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSANOTVALIDX(id);
stats->pkt_notvalid_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSAOKX(id);
stats->pkt_ok_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSAUNUSEDSAX(id);
stats->pkt_nosa_cnt = mcs_reg_read(mcs, reg);
} else {
reg = MCSX_CSE_TX_MEM_SLAVE_OUTPKTSSAENCRYPTEDX(id);
stats->pkt_encrypt_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_TX_MEM_SLAVE_OUTPKTSSAPROTECTEDX(id);
stats->pkt_protected_cnt = mcs_reg_read(mcs, reg);
}
}
void mcs_get_sc_stats(struct mcs *mcs, struct mcs_sc_stats *stats,
int id, int dir)
{
u64 reg;
if (dir == MCS_RX) {
reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSCCAMHITX(id);
stats->hit_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSCINVALIDX(id);
stats->pkt_invalid_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSCLATEORDELAYEDX(id);
stats->pkt_late_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSCNOTVALIDX(id);
stats->pkt_notvalid_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSCUNCHECKEDOROKX(id);
stats->pkt_unchecked_cnt = mcs_reg_read(mcs, reg);
if (mcs->hw->mcs_blks > 1) {
reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSCDELAYEDX(id);
stats->pkt_delay_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSCOKX(id);
stats->pkt_ok_cnt = mcs_reg_read(mcs, reg);
}
if (mcs->hw->mcs_blks == 1) {
reg = MCSX_CSE_RX_MEM_SLAVE_INOCTETSSCDECRYPTEDX(id);
stats->octet_decrypt_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_RX_MEM_SLAVE_INOCTETSSCVALIDATEX(id);
stats->octet_validate_cnt = mcs_reg_read(mcs, reg);
}
} else {
reg = MCSX_CSE_TX_MEM_SLAVE_OUTPKTSSCENCRYPTEDX(id);
stats->pkt_encrypt_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_TX_MEM_SLAVE_OUTPKTSSCPROTECTEDX(id);
stats->pkt_protected_cnt = mcs_reg_read(mcs, reg);
if (mcs->hw->mcs_blks == 1) {
reg = MCSX_CSE_TX_MEM_SLAVE_OUTOCTETSSCENCRYPTEDX(id);
stats->octet_encrypt_cnt = mcs_reg_read(mcs, reg);
reg = MCSX_CSE_TX_MEM_SLAVE_OUTOCTETSSCPROTECTEDX(id);
stats->octet_protected_cnt = mcs_reg_read(mcs, reg);
}
}
}
void mcs_clear_stats(struct mcs *mcs, u8 type, u8 id, int dir)
{
struct mcs_flowid_stats flowid_st;
struct mcs_port_stats port_st;
struct mcs_secy_stats secy_st;
struct mcs_sc_stats sc_st;
struct mcs_sa_stats sa_st;
u64 reg;
if (dir == MCS_RX)
reg = MCSX_CSE_RX_SLAVE_CTRL;
else
reg = MCSX_CSE_TX_SLAVE_CTRL;
mcs_reg_write(mcs, reg, BIT_ULL(0));
switch (type) {
case MCS_FLOWID_STATS:
mcs_get_flowid_stats(mcs, &flowid_st, id, dir);
break;
case MCS_SECY_STATS:
if (dir == MCS_RX)
mcs_get_rx_secy_stats(mcs, &secy_st, id);
else
mcs_get_tx_secy_stats(mcs, &secy_st, id);
break;
case MCS_SC_STATS:
mcs_get_sc_stats(mcs, &sc_st, id, dir);
break;
case MCS_SA_STATS:
mcs_get_sa_stats(mcs, &sa_st, id, dir);
break;
case MCS_PORT_STATS:
mcs_get_port_stats(mcs, &port_st, id, dir);
break;
}
mcs_reg_write(mcs, reg, 0x0);
}
int mcs_clear_all_stats(struct mcs *mcs, u16 pcifunc, int dir)
{
struct mcs_rsrc_map *map;
int id;
if (dir == MCS_RX)
map = &mcs->rx;
else
map = &mcs->tx;
/* Clear FLOWID stats */
for (id = 0; id < map->flow_ids.max; id++) {
if (map->flowid2pf_map[id] != pcifunc)
continue;
mcs_clear_stats(mcs, MCS_FLOWID_STATS, id, dir);
}
/* Clear SECY stats */
for (id = 0; id < map->secy.max; id++) {
if (map->secy2pf_map[id] != pcifunc)
continue;
mcs_clear_stats(mcs, MCS_SECY_STATS, id, dir);
}
/* Clear SC stats */
for (id = 0; id < map->secy.max; id++) {
if (map->sc2pf_map[id] != pcifunc)
continue;
mcs_clear_stats(mcs, MCS_SC_STATS, id, dir);
}
/* Clear SA stats */
for (id = 0; id < map->sa.max; id++) {
if (map->sa2pf_map[id] != pcifunc)
continue;
mcs_clear_stats(mcs, MCS_SA_STATS, id, dir);
}
return 0;
}
void mcs_pn_table_write(struct mcs *mcs, u8 pn_id, u64 next_pn, u8 dir)
{
u64 reg;
if (dir == MCS_RX)
reg = MCSX_CPM_RX_SLAVE_SA_PN_TABLE_MEMX(pn_id);
else
reg = MCSX_CPM_TX_SLAVE_SA_PN_TABLE_MEMX(pn_id);
mcs_reg_write(mcs, reg, next_pn);
}
void cn10kb_mcs_tx_sa_mem_map_write(struct mcs *mcs, struct mcs_tx_sc_sa_map *map)
{
u64 reg, val;
val = (map->sa_index0 & 0xFF) |
(map->sa_index1 & 0xFF) << 9 |
(map->rekey_ena & 0x1) << 18 |
(map->sa_index0_vld & 0x1) << 19 |
(map->sa_index1_vld & 0x1) << 20 |
(map->tx_sa_active & 0x1) << 21 |
map->sectag_sci << 22;
reg = MCSX_CPM_TX_SLAVE_SA_MAP_MEM_0X(map->sc_id);
mcs_reg_write(mcs, reg, val);
val = map->sectag_sci >> 42;
reg = MCSX_CPM_TX_SLAVE_SA_MAP_MEM_1X(map->sc_id);
mcs_reg_write(mcs, reg, val);
}
void cn10kb_mcs_rx_sa_mem_map_write(struct mcs *mcs, struct mcs_rx_sc_sa_map *map)
{
u64 val, reg;
val = (map->sa_index & 0xFF) | map->sa_in_use << 9;
reg = MCSX_CPM_RX_SLAVE_SA_MAP_MEMX((4 * map->sc_id) + map->an);
mcs_reg_write(mcs, reg, val);
}
void mcs_sa_plcy_write(struct mcs *mcs, u64 *plcy, int sa_id, int dir)
{
int reg_id;
u64 reg;
if (dir == MCS_RX) {
for (reg_id = 0; reg_id < 8; reg_id++) {
reg = MCSX_CPM_RX_SLAVE_SA_PLCY_MEMX(reg_id, sa_id);
mcs_reg_write(mcs, reg, plcy[reg_id]);
}
} else {
for (reg_id = 0; reg_id < 9; reg_id++) {
reg = MCSX_CPM_TX_SLAVE_SA_PLCY_MEMX(reg_id, sa_id);
mcs_reg_write(mcs, reg, plcy[reg_id]);
}
}
}
void mcs_ena_dis_sc_cam_entry(struct mcs *mcs, int sc_id, int ena)
{
u64 reg, val;
reg = MCSX_CPM_RX_SLAVE_SC_CAM_ENA(0);
if (sc_id > 63)
reg = MCSX_CPM_RX_SLAVE_SC_CAM_ENA(1);
if (ena)
val = mcs_reg_read(mcs, reg) | BIT_ULL(sc_id);
else
val = mcs_reg_read(mcs, reg) & ~BIT_ULL(sc_id);
mcs_reg_write(mcs, reg, val);
}
void mcs_rx_sc_cam_write(struct mcs *mcs, u64 sci, u64 secy, int sc_id)
{
mcs_reg_write(mcs, MCSX_CPM_RX_SLAVE_SC_CAMX(0, sc_id), sci);
mcs_reg_write(mcs, MCSX_CPM_RX_SLAVE_SC_CAMX(1, sc_id), secy);
/* Enable SC CAM */
mcs_ena_dis_sc_cam_entry(mcs, sc_id, true);
}
void mcs_secy_plcy_write(struct mcs *mcs, u64 plcy, int secy_id, int dir)
{
u64 reg;
if (dir == MCS_RX)
reg = MCSX_CPM_RX_SLAVE_SECY_PLCY_MEM_0X(secy_id);
else
reg = MCSX_CPM_TX_SLAVE_SECY_PLCY_MEMX(secy_id);
mcs_reg_write(mcs, reg, plcy);
if (mcs->hw->mcs_blks == 1 && dir == MCS_RX)
mcs_reg_write(mcs, MCSX_CPM_RX_SLAVE_SECY_PLCY_MEM_1X(secy_id), 0x0ull);
}
void cn10kb_mcs_flowid_secy_map(struct mcs *mcs, struct secy_mem_map *map, int dir)
{
u64 reg, val;
val = (map->secy & 0x7F) | (map->ctrl_pkt & 0x1) << 8;
if (dir == MCS_RX) {
reg = MCSX_CPM_RX_SLAVE_SECY_MAP_MEMX(map->flow_id);
} else {
val |= (map->sc & 0x7F) << 9;
reg = MCSX_CPM_TX_SLAVE_SECY_MAP_MEM_0X(map->flow_id);
}
mcs_reg_write(mcs, reg, val);
}
void mcs_ena_dis_flowid_entry(struct mcs *mcs, int flow_id, int dir, int ena)
{
u64 reg, val;
if (dir == MCS_RX) {
reg = MCSX_CPM_RX_SLAVE_FLOWID_TCAM_ENA_0;
if (flow_id > 63)
reg = MCSX_CPM_RX_SLAVE_FLOWID_TCAM_ENA_1;
} else {
reg = MCSX_CPM_TX_SLAVE_FLOWID_TCAM_ENA_0;
if (flow_id > 63)
reg = MCSX_CPM_TX_SLAVE_FLOWID_TCAM_ENA_1;
}
/* Enable/Disable the tcam entry */
if (ena)
val = mcs_reg_read(mcs, reg) | BIT_ULL(flow_id);
else
val = mcs_reg_read(mcs, reg) & ~BIT_ULL(flow_id);
mcs_reg_write(mcs, reg, val);
}
void mcs_flowid_entry_write(struct mcs *mcs, u64 *data, u64 *mask, int flow_id, int dir)
{
int reg_id;
u64 reg;
if (dir == MCS_RX) {
for (reg_id = 0; reg_id < 4; reg_id++) {
reg = MCSX_CPM_RX_SLAVE_FLOWID_TCAM_DATAX(reg_id, flow_id);
mcs_reg_write(mcs, reg, data[reg_id]);
}
for (reg_id = 0; reg_id < 4; reg_id++) {
reg = MCSX_CPM_RX_SLAVE_FLOWID_TCAM_MASKX(reg_id, flow_id);
mcs_reg_write(mcs, reg, mask[reg_id]);
}
} else {
for (reg_id = 0; reg_id < 4; reg_id++) {
reg = MCSX_CPM_TX_SLAVE_FLOWID_TCAM_DATAX(reg_id, flow_id);
mcs_reg_write(mcs, reg, data[reg_id]);
}
for (reg_id = 0; reg_id < 4; reg_id++) {
reg = MCSX_CPM_TX_SLAVE_FLOWID_TCAM_MASKX(reg_id, flow_id);
mcs_reg_write(mcs, reg, mask[reg_id]);
}
}
}
int mcs_install_flowid_bypass_entry(struct mcs *mcs)
{
int flow_id, secy_id, reg_id;
struct secy_mem_map map;
u64 reg, plcy = 0;
/* Flow entry */
flow_id = mcs->hw->tcam_entries - MCS_RSRC_RSVD_CNT;
__set_bit(flow_id, mcs->rx.flow_ids.bmap);
__set_bit(flow_id, mcs->tx.flow_ids.bmap);
for (reg_id = 0; reg_id < 4; reg_id++) {
reg = MCSX_CPM_RX_SLAVE_FLOWID_TCAM_MASKX(reg_id, flow_id);
mcs_reg_write(mcs, reg, GENMASK_ULL(63, 0));
}
for (reg_id = 0; reg_id < 4; reg_id++) {
reg = MCSX_CPM_TX_SLAVE_FLOWID_TCAM_MASKX(reg_id, flow_id);
mcs_reg_write(mcs, reg, GENMASK_ULL(63, 0));
}
/* secy */
secy_id = mcs->hw->secy_entries - MCS_RSRC_RSVD_CNT;
__set_bit(secy_id, mcs->rx.secy.bmap);
__set_bit(secy_id, mcs->tx.secy.bmap);
/* Set validate frames to NULL and enable control port */
plcy = 0x7ull;
if (mcs->hw->mcs_blks > 1)
plcy = BIT_ULL(0) | 0x3ull << 4;
mcs_secy_plcy_write(mcs, plcy, secy_id, MCS_RX);
/* Enable control port and set mtu to max */
plcy = BIT_ULL(0) | GENMASK_ULL(43, 28);
if (mcs->hw->mcs_blks > 1)
plcy = BIT_ULL(0) | GENMASK_ULL(63, 48);
mcs_secy_plcy_write(mcs, plcy, secy_id, MCS_TX);
/* Map flowid to secy */
map.secy = secy_id;
map.ctrl_pkt = 0;
map.flow_id = flow_id;
mcs->mcs_ops->mcs_flowid_secy_map(mcs, &map, MCS_RX);
map.sc = secy_id;
mcs->mcs_ops->mcs_flowid_secy_map(mcs, &map, MCS_TX);
/* Enable Flowid entry */
mcs_ena_dis_flowid_entry(mcs, flow_id, MCS_RX, true);
mcs_ena_dis_flowid_entry(mcs, flow_id, MCS_TX, true);
return 0;
}
void mcs_clear_secy_plcy(struct mcs *mcs, int secy_id, int dir)
{
struct mcs_rsrc_map *map;
int flow_id;
if (dir == MCS_RX)
map = &mcs->rx;
else
map = &mcs->tx;
/* Clear secy memory to zero */
mcs_secy_plcy_write(mcs, 0, secy_id, dir);
/* Disable the tcam entry using this secy */
for (flow_id = 0; flow_id < map->flow_ids.max; flow_id++) {
if (map->flowid2secy_map[flow_id] != secy_id)
continue;
mcs_ena_dis_flowid_entry(mcs, flow_id, dir, false);
}
}
int mcs_alloc_ctrlpktrule(struct rsrc_bmap *rsrc, u16 *pf_map, u16 offset, u16 pcifunc)
{
int rsrc_id;
if (!rsrc->bmap)
return -EINVAL;
rsrc_id = bitmap_find_next_zero_area(rsrc->bmap, rsrc->max, offset, 1, 0);
if (rsrc_id >= rsrc->max)
return -ENOSPC;
bitmap_set(rsrc->bmap, rsrc_id, 1);
pf_map[rsrc_id] = pcifunc;
return rsrc_id;
}
int mcs_free_ctrlpktrule(struct mcs *mcs, struct mcs_free_ctrl_pkt_rule_req *req)
{
u16 pcifunc = req->hdr.pcifunc;
struct mcs_rsrc_map *map;
u64 dis, reg;
int id, rc;
reg = (req->dir == MCS_RX) ? MCSX_PEX_RX_SLAVE_RULE_ENABLE : MCSX_PEX_TX_SLAVE_RULE_ENABLE;
map = (req->dir == MCS_RX) ? &mcs->rx : &mcs->tx;
if (req->all) {
for (id = 0; id < map->ctrlpktrule.max; id++) {
if (map->ctrlpktrule2pf_map[id] != pcifunc)
continue;
mcs_free_rsrc(&map->ctrlpktrule, map->ctrlpktrule2pf_map, id, pcifunc);
dis = mcs_reg_read(mcs, reg);
dis &= ~BIT_ULL(id);
mcs_reg_write(mcs, reg, dis);
}
return 0;
}
rc = mcs_free_rsrc(&map->ctrlpktrule, map->ctrlpktrule2pf_map, req->rule_idx, pcifunc);
dis = mcs_reg_read(mcs, reg);
dis &= ~BIT_ULL(req->rule_idx);
mcs_reg_write(mcs, reg, dis);
return rc;
}
int mcs_ctrlpktrule_write(struct mcs *mcs, struct mcs_ctrl_pkt_rule_write_req *req)
{
u64 reg, enb;
u64 idx;
switch (req->rule_type) {
case MCS_CTRL_PKT_RULE_TYPE_ETH:
req->data0 &= GENMASK(15, 0);
if (req->data0 != ETH_P_PAE)
return -EINVAL;
idx = req->rule_idx - MCS_CTRLPKT_ETYPE_RULE_OFFSET;
reg = (req->dir == MCS_RX) ? MCSX_PEX_RX_SLAVE_RULE_ETYPE_CFGX(idx) :
MCSX_PEX_TX_SLAVE_RULE_ETYPE_CFGX(idx);
mcs_reg_write(mcs, reg, req->data0);
break;
case MCS_CTRL_PKT_RULE_TYPE_DA:
if (!(req->data0 & BIT_ULL(40)))
return -EINVAL;
idx = req->rule_idx - MCS_CTRLPKT_DA_RULE_OFFSET;
reg = (req->dir == MCS_RX) ? MCSX_PEX_RX_SLAVE_RULE_DAX(idx) :
MCSX_PEX_TX_SLAVE_RULE_DAX(idx);
mcs_reg_write(mcs, reg, req->data0 & GENMASK_ULL(47, 0));
break;
case MCS_CTRL_PKT_RULE_TYPE_RANGE:
if (!(req->data0 & BIT_ULL(40)) || !(req->data1 & BIT_ULL(40)))
return -EINVAL;
idx = req->rule_idx - MCS_CTRLPKT_DA_RANGE_RULE_OFFSET;
if (req->dir == MCS_RX) {
reg = MCSX_PEX_RX_SLAVE_RULE_DA_RANGE_MINX(idx);
mcs_reg_write(mcs, reg, req->data0 & GENMASK_ULL(47, 0));
reg = MCSX_PEX_RX_SLAVE_RULE_DA_RANGE_MAXX(idx);
mcs_reg_write(mcs, reg, req->data1 & GENMASK_ULL(47, 0));
} else {
reg = MCSX_PEX_TX_SLAVE_RULE_DA_RANGE_MINX(idx);
mcs_reg_write(mcs, reg, req->data0 & GENMASK_ULL(47, 0));
reg = MCSX_PEX_TX_SLAVE_RULE_DA_RANGE_MAXX(idx);
mcs_reg_write(mcs, reg, req->data1 & GENMASK_ULL(47, 0));
}
break;
case MCS_CTRL_PKT_RULE_TYPE_COMBO:
req->data2 &= GENMASK(15, 0);
if (req->data2 != ETH_P_PAE || !(req->data0 & BIT_ULL(40)) ||
!(req->data1 & BIT_ULL(40)))
return -EINVAL;
idx = req->rule_idx - MCS_CTRLPKT_COMBO_RULE_OFFSET;
if (req->dir == MCS_RX) {
reg = MCSX_PEX_RX_SLAVE_RULE_COMBO_MINX(idx);
mcs_reg_write(mcs, reg, req->data0 & GENMASK_ULL(47, 0));
reg = MCSX_PEX_RX_SLAVE_RULE_COMBO_MAXX(idx);
mcs_reg_write(mcs, reg, req->data1 & GENMASK_ULL(47, 0));
reg = MCSX_PEX_RX_SLAVE_RULE_COMBO_ETX(idx);
mcs_reg_write(mcs, reg, req->data2);
} else {
reg = MCSX_PEX_TX_SLAVE_RULE_COMBO_MINX(idx);
mcs_reg_write(mcs, reg, req->data0 & GENMASK_ULL(47, 0));
reg = MCSX_PEX_TX_SLAVE_RULE_COMBO_MAXX(idx);
mcs_reg_write(mcs, reg, req->data1 & GENMASK_ULL(47, 0));
reg = MCSX_PEX_TX_SLAVE_RULE_COMBO_ETX(idx);
mcs_reg_write(mcs, reg, req->data2);
}
break;
case MCS_CTRL_PKT_RULE_TYPE_MAC:
if (!(req->data0 & BIT_ULL(40)))
return -EINVAL;
idx = req->rule_idx - MCS_CTRLPKT_MAC_EN_RULE_OFFSET;
reg = (req->dir == MCS_RX) ? MCSX_PEX_RX_SLAVE_RULE_MAC :
MCSX_PEX_TX_SLAVE_RULE_MAC;
mcs_reg_write(mcs, reg, req->data0 & GENMASK_ULL(47, 0));
break;
}
reg = (req->dir == MCS_RX) ? MCSX_PEX_RX_SLAVE_RULE_ENABLE : MCSX_PEX_TX_SLAVE_RULE_ENABLE;
enb = mcs_reg_read(mcs, reg);
enb |= BIT_ULL(req->rule_idx);
mcs_reg_write(mcs, reg, enb);
return 0;
}
int mcs_free_rsrc(struct rsrc_bmap *rsrc, u16 *pf_map, int rsrc_id, u16 pcifunc)
{
/* Check if the rsrc_id is mapped to PF/VF */
if (pf_map[rsrc_id] != pcifunc)
return -EINVAL;
rvu_free_rsrc(rsrc, rsrc_id);
pf_map[rsrc_id] = 0;
return 0;
}
/* Free all the cam resources mapped to pf */
int mcs_free_all_rsrc(struct mcs *mcs, int dir, u16 pcifunc)
{
struct mcs_rsrc_map *map;
int id;
if (dir == MCS_RX)
map = &mcs->rx;
else
map = &mcs->tx;
/* free tcam entries */
for (id = 0; id < map->flow_ids.max; id++) {
if (map->flowid2pf_map[id] != pcifunc)
continue;
mcs_free_rsrc(&map->flow_ids, map->flowid2pf_map,
id, pcifunc);
mcs_ena_dis_flowid_entry(mcs, id, dir, false);
}
/* free secy entries */
for (id = 0; id < map->secy.max; id++) {
if (map->secy2pf_map[id] != pcifunc)
continue;
mcs_free_rsrc(&map->secy, map->secy2pf_map,
id, pcifunc);
mcs_clear_secy_plcy(mcs, id, dir);
}
/* free sc entries */
for (id = 0; id < map->secy.max; id++) {
if (map->sc2pf_map[id] != pcifunc)
continue;
mcs_free_rsrc(&map->sc, map->sc2pf_map, id, pcifunc);
/* Disable SC CAM only on RX side */
if (dir == MCS_RX)
mcs_ena_dis_sc_cam_entry(mcs, id, false);
}
/* free sa entries */
for (id = 0; id < map->sa.max; id++) {
if (map->sa2pf_map[id] != pcifunc)
continue;
mcs_free_rsrc(&map->sa, map->sa2pf_map, id, pcifunc);
}
return 0;
}
int mcs_alloc_rsrc(struct rsrc_bmap *rsrc, u16 *pf_map, u16 pcifunc)
{
int rsrc_id;
rsrc_id = rvu_alloc_rsrc(rsrc);
if (rsrc_id < 0)
return -ENOMEM;
pf_map[rsrc_id] = pcifunc;
return rsrc_id;
}
int mcs_alloc_all_rsrc(struct mcs *mcs, u8 *flow_id, u8 *secy_id,
u8 *sc_id, u8 *sa1_id, u8 *sa2_id, u16 pcifunc, int dir)
{
struct mcs_rsrc_map *map;
int id;
if (dir == MCS_RX)
map = &mcs->rx;
else
map = &mcs->tx;
id = mcs_alloc_rsrc(&map->flow_ids, map->flowid2pf_map, pcifunc);
if (id < 0)
return -ENOMEM;
*flow_id = id;
id = mcs_alloc_rsrc(&map->secy, map->secy2pf_map, pcifunc);
if (id < 0)
return -ENOMEM;
*secy_id = id;
id = mcs_alloc_rsrc(&map->sc, map->sc2pf_map, pcifunc);
if (id < 0)
return -ENOMEM;
*sc_id = id;
id = mcs_alloc_rsrc(&map->sa, map->sa2pf_map, pcifunc);
if (id < 0)
return -ENOMEM;
*sa1_id = id;
id = mcs_alloc_rsrc(&map->sa, map->sa2pf_map, pcifunc);
if (id < 0)
return -ENOMEM;
*sa2_id = id;
return 0;
}
static void cn10kb_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 >> 9) & 0xFF;
else
/* SA_index0 was used and got expired */
event.sa_id = val & 0xFF;
event.pcifunc = mcs->tx.sa2pf_map[event.sa_id];
mcs_add_intr_wq_entry(mcs, &event);
}
}
static void cn10kb_mcs_tx_pn_thresh_reached_handler(struct mcs *mcs)
{
struct mcs_intr_event event = { 0 };
struct rsrc_bmap *sc_bmap;
u64 val, status;
int sc;
sc_bmap = &mcs->tx.sc;
event.mcs_id = mcs->mcs_id;
event.intr_mask = MCS_CPM_TX_PN_THRESH_REACHED_INT;
/* 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.
*/
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));
/* Auto rekey is enable */
if (!((val >> 18) & 0x1))
continue;
status = (val >> 21) & 0x1;
/* Check if tx_sa_active status had changed */
if (status == mcs->tx_sa_active[sc])
continue;
/* SA_index0 is expired */
if (status)
event.sa_id = val & 0xFF;
else
event.sa_id = (val >> 9) & 0xFF;
event.pcifunc = mcs->tx.sa2pf_map[event.sa_id];
mcs_add_intr_wq_entry(mcs, &event);
}
}
static void mcs_rx_pn_thresh_reached_handler(struct mcs *mcs)
{
struct mcs_intr_event event = { 0 };
int sa, reg;
u64 intr;
/* Check expired SAs */
for (reg = 0; reg < (mcs->hw->sa_entries / 64); reg++) {
/* Bit high in *PN_THRESH_REACHEDX implies
* corresponding SAs are expired.
*/
intr = mcs_reg_read(mcs, MCSX_CPM_RX_SLAVE_PN_THRESH_REACHEDX(reg));
for (sa = 0; sa < 64; sa++) {
if (!(intr & BIT_ULL(sa)))
continue;
event.mcs_id = mcs->mcs_id;
event.intr_mask = MCS_CPM_RX_PN_THRESH_REACHED_INT;
event.sa_id = sa + (reg * 64);
event.pcifunc = mcs->rx.sa2pf_map[event.sa_id];
mcs_add_intr_wq_entry(mcs, &event);
}
}
}
static void mcs_rx_misc_intr_handler(struct mcs *mcs, u64 intr)
{
struct mcs_intr_event event = { 0 };
event.mcs_id = mcs->mcs_id;
event.pcifunc = mcs->pf_map[0];
if (intr & MCS_CPM_RX_INT_SECTAG_V_EQ1)
event.intr_mask = MCS_CPM_RX_SECTAG_V_EQ1_INT;
if (intr & MCS_CPM_RX_INT_SECTAG_E_EQ0_C_EQ1)
event.intr_mask |= MCS_CPM_RX_SECTAG_E_EQ0_C_EQ1_INT;
if (intr & MCS_CPM_RX_INT_SL_GTE48)
event.intr_mask |= MCS_CPM_RX_SECTAG_SL_GTE48_INT;
if (intr & MCS_CPM_RX_INT_ES_EQ1_SC_EQ1)
event.intr_mask |= MCS_CPM_RX_SECTAG_ES_EQ1_SC_EQ1_INT;
if (intr & MCS_CPM_RX_INT_SC_EQ1_SCB_EQ1)
event.intr_mask |= MCS_CPM_RX_SECTAG_SC_EQ1_SCB_EQ1_INT;
if (intr & MCS_CPM_RX_INT_PACKET_XPN_EQ0)
event.intr_mask |= MCS_CPM_RX_PACKET_XPN_EQ0_INT;
mcs_add_intr_wq_entry(mcs, &event);
}
static void mcs_tx_misc_intr_handler(struct mcs *mcs, u64 intr)
{
struct mcs_intr_event event = { 0 };
if (!(intr & MCS_CPM_TX_INT_SA_NOT_VALID))
return;
event.mcs_id = mcs->mcs_id;
event.pcifunc = mcs->pf_map[0];
event.intr_mask = MCS_CPM_TX_SA_NOT_VALID_INT;
mcs_add_intr_wq_entry(mcs, &event);
}
void cn10kb_mcs_bbe_intr_handler(struct mcs *mcs, u64 intr,
enum mcs_direction dir)
{
u64 val, reg;
int lmac;
if (!(intr & 0x6ULL))
return;
if (intr & BIT_ULL(1))
reg = (dir == MCS_RX) ? MCSX_BBE_RX_SLAVE_DFIFO_OVERFLOW_0 :
MCSX_BBE_TX_SLAVE_DFIFO_OVERFLOW_0;
else
reg = (dir == MCS_RX) ? MCSX_BBE_RX_SLAVE_PLFIFO_OVERFLOW_0 :
MCSX_BBE_TX_SLAVE_PLFIFO_OVERFLOW_0;
val = mcs_reg_read(mcs, reg);
/* policy/data over flow occurred */
for (lmac = 0; lmac < mcs->hw->lmac_cnt; lmac++) {
if (!(val & BIT_ULL(lmac)))
continue;
dev_warn(mcs->dev, "BEE:Policy or data overflow occurred on lmac:%d\n", lmac);
}
}
void cn10kb_mcs_pab_intr_handler(struct mcs *mcs, u64 intr,
enum mcs_direction dir)
{
int lmac;
if (!(intr & 0xFFFFFULL))
return;
for (lmac = 0; lmac < mcs->hw->lmac_cnt; lmac++) {
if (intr & BIT_ULL(lmac))
dev_warn(mcs->dev, "PAB: overflow occurred on lmac:%d\n", lmac);
}
}
static irqreturn_t mcs_ip_intr_handler(int irq, void *mcs_irq)
{
struct mcs *mcs = (struct mcs *)mcs_irq;
u64 intr, cpm_intr, bbe_intr, pab_intr;
/* Disable the interrupt */
mcs_reg_write(mcs, MCSX_IP_INT_ENA_W1C, BIT_ULL(0));
/* Check which block has interrupt*/
intr = mcs_reg_read(mcs, MCSX_TOP_SLAVE_INT_SUM);
/* CPM RX */
if (intr & MCS_CPM_RX_INT_ENA) {
/* Check for PN thresh interrupt bit */
cpm_intr = mcs_reg_read(mcs, MCSX_CPM_RX_SLAVE_RX_INT);
if (cpm_intr & MCS_CPM_RX_INT_PN_THRESH_REACHED)
mcs_rx_pn_thresh_reached_handler(mcs);
if (cpm_intr & MCS_CPM_RX_INT_ALL)
mcs_rx_misc_intr_handler(mcs, cpm_intr);
/* Clear the interrupt */
mcs_reg_write(mcs, MCSX_CPM_RX_SLAVE_RX_INT, cpm_intr);
}
/* CPM TX */
if (intr & MCS_CPM_TX_INT_ENA) {
cpm_intr = mcs_reg_read(mcs, MCSX_CPM_TX_SLAVE_TX_INT);
if (cpm_intr & MCS_CPM_TX_INT_PN_THRESH_REACHED) {
if (mcs->hw->mcs_blks > 1)
cnf10kb_mcs_tx_pn_thresh_reached_handler(mcs);
else
cn10kb_mcs_tx_pn_thresh_reached_handler(mcs);
}
if (cpm_intr & MCS_CPM_TX_INT_SA_NOT_VALID)
mcs_tx_misc_intr_handler(mcs, cpm_intr);
if (cpm_intr & MCS_CPM_TX_INT_PACKET_XPN_EQ0) {
if (mcs->hw->mcs_blks > 1)
cnf10kb_mcs_tx_pn_wrapped_handler(mcs);
else
cn10kb_mcs_tx_pn_wrapped_handler(mcs);
}
/* Clear the interrupt */
mcs_reg_write(mcs, MCSX_CPM_TX_SLAVE_TX_INT, cpm_intr);
}
/* BBE RX */
if (intr & MCS_BBE_RX_INT_ENA) {
bbe_intr = mcs_reg_read(mcs, MCSX_BBE_RX_SLAVE_BBE_INT);
mcs->mcs_ops->mcs_bbe_intr_handler(mcs, bbe_intr, MCS_RX);
/* Clear the interrupt */
mcs_reg_write(mcs, MCSX_BBE_RX_SLAVE_BBE_INT_INTR_RW, 0);
mcs_reg_write(mcs, MCSX_BBE_RX_SLAVE_BBE_INT, bbe_intr);
}
/* BBE TX */
if (intr & MCS_BBE_TX_INT_ENA) {
bbe_intr = mcs_reg_read(mcs, MCSX_BBE_TX_SLAVE_BBE_INT);
mcs->mcs_ops->mcs_bbe_intr_handler(mcs, bbe_intr, MCS_TX);
/* Clear the interrupt */
mcs_reg_write(mcs, MCSX_BBE_TX_SLAVE_BBE_INT_INTR_RW, 0);
mcs_reg_write(mcs, MCSX_BBE_TX_SLAVE_BBE_INT, bbe_intr);
}
/* PAB RX */
if (intr & MCS_PAB_RX_INT_ENA) {
pab_intr = mcs_reg_read(mcs, MCSX_PAB_RX_SLAVE_PAB_INT);
mcs->mcs_ops->mcs_pab_intr_handler(mcs, pab_intr, MCS_RX);
/* Clear the interrupt */
mcs_reg_write(mcs, MCSX_PAB_RX_SLAVE_PAB_INT_INTR_RW, 0);
mcs_reg_write(mcs, MCSX_PAB_RX_SLAVE_PAB_INT, pab_intr);
}
/* PAB TX */
if (intr & MCS_PAB_TX_INT_ENA) {
pab_intr = mcs_reg_read(mcs, MCSX_PAB_TX_SLAVE_PAB_INT);
mcs->mcs_ops->mcs_pab_intr_handler(mcs, pab_intr, MCS_TX);
/* Clear the interrupt */
mcs_reg_write(mcs, MCSX_PAB_TX_SLAVE_PAB_INT_INTR_RW, 0);
mcs_reg_write(mcs, MCSX_PAB_TX_SLAVE_PAB_INT, pab_intr);
}
/* Clear and enable the interrupt */
mcs_reg_write(mcs, MCSX_IP_INT, BIT_ULL(0));
mcs_reg_write(mcs, MCSX_IP_INT_ENA_W1S, BIT_ULL(0));
return IRQ_HANDLED;
}
static void *alloc_mem(struct mcs *mcs, int n)
{
return devm_kcalloc(mcs->dev, n, sizeof(u16), GFP_KERNEL);
}
static int mcs_alloc_struct_mem(struct mcs *mcs, struct mcs_rsrc_map *res)
{
struct hwinfo *hw = mcs->hw;
int err;
res->flowid2pf_map = alloc_mem(mcs, hw->tcam_entries);
if (!res->flowid2pf_map)
return -ENOMEM;
res->secy2pf_map = alloc_mem(mcs, hw->secy_entries);
if (!res->secy2pf_map)
return -ENOMEM;
res->sc2pf_map = alloc_mem(mcs, hw->sc_entries);
if (!res->sc2pf_map)
return -ENOMEM;
res->sa2pf_map = alloc_mem(mcs, hw->sa_entries);
if (!res->sa2pf_map)
return -ENOMEM;
res->flowid2secy_map = alloc_mem(mcs, hw->tcam_entries);
if (!res->flowid2secy_map)
return -ENOMEM;
res->ctrlpktrule2pf_map = alloc_mem(mcs, MCS_MAX_CTRLPKT_RULES);
if (!res->ctrlpktrule2pf_map)
return -ENOMEM;
res->flow_ids.max = hw->tcam_entries - MCS_RSRC_RSVD_CNT;
err = rvu_alloc_bitmap(&res->flow_ids);
if (err)
return err;
res->secy.max = hw->secy_entries - MCS_RSRC_RSVD_CNT;
err = rvu_alloc_bitmap(&res->secy);
if (err)
return err;
res->sc.max = hw->sc_entries;
err = rvu_alloc_bitmap(&res->sc);
if (err)
return err;
res->sa.max = hw->sa_entries;
err = rvu_alloc_bitmap(&res->sa);
if (err)
return err;
res->ctrlpktrule.max = MCS_MAX_CTRLPKT_RULES;
err = rvu_alloc_bitmap(&res->ctrlpktrule);
if (err)
return err;
return 0;
}
static int mcs_register_interrupts(struct mcs *mcs)
{
int ret = 0;
mcs->num_vec = pci_msix_vec_count(mcs->pdev);
ret = pci_alloc_irq_vectors(mcs->pdev, mcs->num_vec,
mcs->num_vec, PCI_IRQ_MSIX);
if (ret < 0) {
dev_err(mcs->dev, "MCS Request for %d msix vector failed err:%d\n",
mcs->num_vec, ret);
return ret;
}
ret = request_irq(pci_irq_vector(mcs->pdev, mcs->hw->ip_vec),
mcs_ip_intr_handler, 0, "MCS_IP", mcs);
if (ret) {
dev_err(mcs->dev, "MCS IP irq registration failed\n");
goto exit;
}
/* MCS enable IP interrupts */
mcs_reg_write(mcs, MCSX_IP_INT_ENA_W1S, BIT_ULL(0));
/* Enable CPM Rx/Tx interrupts */
mcs_reg_write(mcs, MCSX_TOP_SLAVE_INT_SUM_ENB,
MCS_CPM_RX_INT_ENA | MCS_CPM_TX_INT_ENA |
MCS_BBE_RX_INT_ENA | MCS_BBE_TX_INT_ENA |
MCS_PAB_RX_INT_ENA | MCS_PAB_TX_INT_ENA);
mcs_reg_write(mcs, MCSX_CPM_TX_SLAVE_TX_INT_ENB, 0x7ULL);
mcs_reg_write(mcs, MCSX_CPM_RX_SLAVE_RX_INT_ENB, 0x7FULL);
mcs_reg_write(mcs, MCSX_BBE_RX_SLAVE_BBE_INT_ENB, 0xFFULL);
mcs_reg_write(mcs, MCSX_BBE_TX_SLAVE_BBE_INT_ENB, 0xFFULL);
mcs_reg_write(mcs, MCSX_PAB_RX_SLAVE_PAB_INT_ENB, 0xFFFFFULL);
mcs_reg_write(mcs, MCSX_PAB_TX_SLAVE_PAB_INT_ENB, 0xFFFFFULL);
mcs->tx_sa_active = alloc_mem(mcs, mcs->hw->sc_entries);
if (!mcs->tx_sa_active) {
ret = -ENOMEM;
goto free_irq;
}
return ret;
free_irq:
free_irq(pci_irq_vector(mcs->pdev, mcs->hw->ip_vec), mcs);
exit:
pci_free_irq_vectors(mcs->pdev);
mcs->num_vec = 0;
return ret;
}
int mcs_get_blkcnt(void)
{
struct mcs *mcs;
int idmax = -ENODEV;
/* Check MCS block is present in hardware */
if (!pci_dev_present(mcs_id_table))
return 0;
list_for_each_entry(mcs, &mcs_list, mcs_list)
if (mcs->mcs_id > idmax)
idmax = mcs->mcs_id;
if (idmax < 0)
return 0;
return idmax + 1;
}
struct mcs *mcs_get_pdata(int mcs_id)
{
struct mcs *mcs_dev;
list_for_each_entry(mcs_dev, &mcs_list, mcs_list) {
if (mcs_dev->mcs_id == mcs_id)
return mcs_dev;
}
return NULL;
}
void mcs_set_port_cfg(struct mcs *mcs, struct mcs_port_cfg_set_req *req)
{
u64 val = 0;
mcs_reg_write(mcs, MCSX_PAB_RX_SLAVE_PORT_CFGX(req->port_id),
req->port_mode & MCS_PORT_MODE_MASK);
req->cstm_tag_rel_mode_sel &= 0x3;
if (mcs->hw->mcs_blks > 1) {
req->fifo_skid &= MCS_PORT_FIFO_SKID_MASK;
val = (u32)req->fifo_skid << 0x10;
val |= req->fifo_skid;
mcs_reg_write(mcs, MCSX_PAB_RX_SLAVE_FIFO_SKID_CFGX(req->port_id), val);
mcs_reg_write(mcs, MCSX_PEX_TX_SLAVE_CUSTOM_TAG_REL_MODE_SEL(req->port_id),
req->cstm_tag_rel_mode_sel);
val = mcs_reg_read(mcs, MCSX_PEX_RX_SLAVE_PEX_CONFIGURATION);
if (req->custom_hdr_enb)
val |= BIT_ULL(req->port_id);
else
val &= ~BIT_ULL(req->port_id);
mcs_reg_write(mcs, MCSX_PEX_RX_SLAVE_PEX_CONFIGURATION, val);
} else {
val = mcs_reg_read(mcs, MCSX_PEX_TX_SLAVE_PORT_CONFIG(req->port_id));
val |= (req->cstm_tag_rel_mode_sel << 2);
mcs_reg_write(mcs, MCSX_PEX_TX_SLAVE_PORT_CONFIG(req->port_id), val);
}
}
void mcs_get_port_cfg(struct mcs *mcs, struct mcs_port_cfg_get_req *req,
struct mcs_port_cfg_get_rsp *rsp)
{
u64 reg = 0;
rsp->port_mode = mcs_reg_read(mcs, MCSX_PAB_RX_SLAVE_PORT_CFGX(req->port_id)) &
MCS_PORT_MODE_MASK;
if (mcs->hw->mcs_blks > 1) {
reg = MCSX_PAB_RX_SLAVE_FIFO_SKID_CFGX(req->port_id);
rsp->fifo_skid = mcs_reg_read(mcs, reg) & MCS_PORT_FIFO_SKID_MASK;
reg = MCSX_PEX_TX_SLAVE_CUSTOM_TAG_REL_MODE_SEL(req->port_id);
rsp->cstm_tag_rel_mode_sel = mcs_reg_read(mcs, reg) & 0x3;
if (mcs_reg_read(mcs, MCSX_PEX_RX_SLAVE_PEX_CONFIGURATION) & BIT_ULL(req->port_id))
rsp->custom_hdr_enb = 1;
} else {
reg = MCSX_PEX_TX_SLAVE_PORT_CONFIG(req->port_id);
rsp->cstm_tag_rel_mode_sel = mcs_reg_read(mcs, reg) >> 2;
}
rsp->port_id = req->port_id;
rsp->mcs_id = req->mcs_id;
}
void mcs_get_custom_tag_cfg(struct mcs *mcs, struct mcs_custom_tag_cfg_get_req *req,
struct mcs_custom_tag_cfg_get_rsp *rsp)
{
u64 reg = 0, val = 0;
u8 idx;
for (idx = 0; idx < MCS_MAX_CUSTOM_TAGS; idx++) {
if (mcs->hw->mcs_blks > 1)
reg = (req->dir == MCS_RX) ? MCSX_PEX_RX_SLAVE_CUSTOM_TAGX(idx) :
MCSX_PEX_TX_SLAVE_CUSTOM_TAGX(idx);
else
reg = (req->dir == MCS_RX) ? MCSX_PEX_RX_SLAVE_VLAN_CFGX(idx) :
MCSX_PEX_TX_SLAVE_VLAN_CFGX(idx);
val = mcs_reg_read(mcs, reg);
if (mcs->hw->mcs_blks > 1) {
rsp->cstm_etype[idx] = val & GENMASK(15, 0);
rsp->cstm_indx[idx] = (val >> 0x16) & 0x3;
reg = (req->dir == MCS_RX) ? MCSX_PEX_RX_SLAVE_ETYPE_ENABLE :
MCSX_PEX_TX_SLAVE_ETYPE_ENABLE;
rsp->cstm_etype_en = mcs_reg_read(mcs, reg) & 0xFF;
} else {
rsp->cstm_etype[idx] = (val >> 0x1) & GENMASK(15, 0);
rsp->cstm_indx[idx] = (val >> 0x11) & 0x3;
rsp->cstm_etype_en |= (val & 0x1) << idx;
}
}
rsp->mcs_id = req->mcs_id;
rsp->dir = req->dir;
}
void mcs_reset_port(struct mcs *mcs, u8 port_id, u8 reset)
{
u64 reg = MCSX_MCS_TOP_SLAVE_PORT_RESET(port_id);
mcs_reg_write(mcs, reg, reset & 0x1);
}
/* Set lmac to bypass/operational mode */
void mcs_set_lmac_mode(struct mcs *mcs, int lmac_id, u8 mode)
{
u64 reg;
int id = lmac_id * 2;
reg = MCSX_MCS_TOP_SLAVE_CHANNEL_CFG(id);
mcs_reg_write(mcs, reg, (u64)mode);
reg = MCSX_MCS_TOP_SLAVE_CHANNEL_CFG((id + 1));
mcs_reg_write(mcs, reg, (u64)mode);
}
void mcs_pn_threshold_set(struct mcs *mcs, struct mcs_set_pn_threshold *pn)
{
u64 reg;
if (pn->dir == MCS_RX)
reg = pn->xpn ? MCSX_CPM_RX_SLAVE_XPN_THRESHOLD : MCSX_CPM_RX_SLAVE_PN_THRESHOLD;
else
reg = pn->xpn ? MCSX_CPM_TX_SLAVE_XPN_THRESHOLD : MCSX_CPM_TX_SLAVE_PN_THRESHOLD;
mcs_reg_write(mcs, reg, pn->threshold);
}
void cn10kb_mcs_parser_cfg(struct mcs *mcs)
{
u64 reg, val;
/* VLAN CTag */
val = BIT_ULL(0) | (0x8100ull & 0xFFFF) << 1 | BIT_ULL(17);
/* RX */
reg = MCSX_PEX_RX_SLAVE_VLAN_CFGX(0);
mcs_reg_write(mcs, reg, val);
/* TX */
reg = MCSX_PEX_TX_SLAVE_VLAN_CFGX(0);
mcs_reg_write(mcs, reg, val);
/* VLAN STag */
val = BIT_ULL(0) | (0x88a8ull & 0xFFFF) << 1 | BIT_ULL(18);
/* RX */
reg = MCSX_PEX_RX_SLAVE_VLAN_CFGX(1);
mcs_reg_write(mcs, reg, val);
/* TX */
reg = MCSX_PEX_TX_SLAVE_VLAN_CFGX(1);
mcs_reg_write(mcs, reg, val);
}
static void mcs_lmac_init(struct mcs *mcs, int lmac_id)
{
u64 reg;
/* Port mode 25GB */
reg = MCSX_PAB_RX_SLAVE_PORT_CFGX(lmac_id);
mcs_reg_write(mcs, reg, 0);
if (mcs->hw->mcs_blks > 1) {
reg = MCSX_PAB_RX_SLAVE_FIFO_SKID_CFGX(lmac_id);
mcs_reg_write(mcs, reg, 0xe000e);
return;
}
reg = MCSX_PAB_TX_SLAVE_PORT_CFGX(lmac_id);
mcs_reg_write(mcs, reg, 0);
}
int mcs_set_lmac_channels(int mcs_id, u16 base)
{
struct mcs *mcs;
int lmac;
u64 cfg;
mcs = mcs_get_pdata(mcs_id);
if (!mcs)
return -ENODEV;
for (lmac = 0; lmac < mcs->hw->lmac_cnt; lmac++) {
cfg = mcs_reg_read(mcs, MCSX_LINK_LMACX_CFG(lmac));
cfg &= ~(MCSX_LINK_LMAC_BASE_MASK | MCSX_LINK_LMAC_RANGE_MASK);
cfg |= FIELD_PREP(MCSX_LINK_LMAC_RANGE_MASK, ilog2(16));
cfg |= FIELD_PREP(MCSX_LINK_LMAC_BASE_MASK, base);
mcs_reg_write(mcs, MCSX_LINK_LMACX_CFG(lmac), cfg);
base += 16;
}
return 0;
}
static int mcs_x2p_calibration(struct mcs *mcs)
{
unsigned long timeout = jiffies + usecs_to_jiffies(20000);
int i, err = 0;
u64 val;
/* set X2P calibration */
val = mcs_reg_read(mcs, MCSX_MIL_GLOBAL);
val |= BIT_ULL(5);
mcs_reg_write(mcs, MCSX_MIL_GLOBAL, val);
/* Wait for calibration to complete */
while (!(mcs_reg_read(mcs, MCSX_MIL_RX_GBL_STATUS) & BIT_ULL(0))) {
if (time_before(jiffies, timeout)) {
usleep_range(80, 100);
continue;
} else {
err = -EBUSY;
dev_err(mcs->dev, "MCS X2P calibration failed..ignoring\n");
return err;
}
}
val = mcs_reg_read(mcs, MCSX_MIL_RX_GBL_STATUS);
for (i = 0; i < mcs->hw->mcs_x2p_intf; i++) {
if (val & BIT_ULL(1 + i))
continue;
err = -EBUSY;
dev_err(mcs->dev, "MCS:%d didn't respond to X2P calibration\n", i);
}
/* Clear X2P calibrate */
mcs_reg_write(mcs, MCSX_MIL_GLOBAL, mcs_reg_read(mcs, MCSX_MIL_GLOBAL) & ~BIT_ULL(5));
return err;
}
static void mcs_set_external_bypass(struct mcs *mcs, u8 bypass)
{
u64 val;
/* Set MCS to external bypass */
val = mcs_reg_read(mcs, MCSX_MIL_GLOBAL);
if (bypass)
val |= BIT_ULL(6);
else
val &= ~BIT_ULL(6);
mcs_reg_write(mcs, MCSX_MIL_GLOBAL, val);
}
static void mcs_global_cfg(struct mcs *mcs)
{
/* Disable external bypass */
mcs_set_external_bypass(mcs, false);
/* Reset TX/RX stats memory */
mcs_reg_write(mcs, MCSX_CSE_RX_SLAVE_STATS_CLEAR, 0x1F);
mcs_reg_write(mcs, MCSX_CSE_TX_SLAVE_STATS_CLEAR, 0x1F);
/* Set MCS to perform standard IEEE802.1AE macsec processing */
if (mcs->hw->mcs_blks == 1) {
mcs_reg_write(mcs, MCSX_IP_MODE, BIT_ULL(3));
return;
}
mcs_reg_write(mcs, MCSX_BBE_RX_SLAVE_CAL_ENTRY, 0xe4);
mcs_reg_write(mcs, MCSX_BBE_RX_SLAVE_CAL_LEN, 4);
}
void cn10kb_mcs_set_hw_capabilities(struct mcs *mcs)
{
struct hwinfo *hw = mcs->hw;
hw->tcam_entries = 128; /* TCAM entries */
hw->secy_entries = 128; /* SecY entries */
hw->sc_entries = 128; /* SC CAM entries */
hw->sa_entries = 256; /* SA entries */
hw->lmac_cnt = 20; /* lmacs/ports per mcs block */
hw->mcs_x2p_intf = 5; /* x2p clabration intf */
hw->mcs_blks = 1; /* MCS blocks */
hw->ip_vec = MCS_CN10KB_INT_VEC_IP; /* IP vector */
}
static struct mcs_ops cn10kb_mcs_ops = {
.mcs_set_hw_capabilities = cn10kb_mcs_set_hw_capabilities,
.mcs_parser_cfg = cn10kb_mcs_parser_cfg,
.mcs_tx_sa_mem_map_write = cn10kb_mcs_tx_sa_mem_map_write,
.mcs_rx_sa_mem_map_write = cn10kb_mcs_rx_sa_mem_map_write,
.mcs_flowid_secy_map = cn10kb_mcs_flowid_secy_map,
.mcs_bbe_intr_handler = cn10kb_mcs_bbe_intr_handler,
.mcs_pab_intr_handler = cn10kb_mcs_pab_intr_handler,
};
static int mcs_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
struct device *dev = &pdev->dev;
int lmac, err = 0;
struct mcs *mcs;
mcs = devm_kzalloc(dev, sizeof(*mcs), GFP_KERNEL);
if (!mcs)
return -ENOMEM;
mcs->hw = devm_kzalloc(dev, sizeof(struct hwinfo), GFP_KERNEL);
if (!mcs->hw)
return -ENOMEM;
err = pci_enable_device(pdev);
if (err) {
dev_err(dev, "Failed to enable PCI device\n");
pci_set_drvdata(pdev, NULL);
return err;
}
err = pci_request_regions(pdev, DRV_NAME);
if (err) {
dev_err(dev, "PCI request regions failed 0x%x\n", err);
goto exit;
}
mcs->reg_base = pcim_iomap(pdev, PCI_CFG_REG_BAR_NUM, 0);
if (!mcs->reg_base) {
dev_err(dev, "mcs: Cannot map CSR memory space, aborting\n");
err = -ENOMEM;
goto exit;
}
pci_set_drvdata(pdev, mcs);
mcs->pdev = pdev;
mcs->dev = &pdev->dev;
if (pdev->subsystem_device == PCI_SUBSYS_DEVID_CN10K_B)
mcs->mcs_ops = &cn10kb_mcs_ops;
else
mcs->mcs_ops = cnf10kb_get_mac_ops();
/* Set hardware capabilities */
mcs->mcs_ops->mcs_set_hw_capabilities(mcs);
mcs_global_cfg(mcs);
/* Perform X2P clibration */
err = mcs_x2p_calibration(mcs);
if (err)
goto err_x2p;
mcs->mcs_id = (pci_resource_start(pdev, PCI_CFG_REG_BAR_NUM) >> 24)
& MCS_ID_MASK;
/* Set mcs tx side resources */
err = mcs_alloc_struct_mem(mcs, &mcs->tx);
if (err)
goto err_x2p;
/* Set mcs rx side resources */
err = mcs_alloc_struct_mem(mcs, &mcs->rx);
if (err)
goto err_x2p;
/* per port config */
for (lmac = 0; lmac < mcs->hw->lmac_cnt; lmac++)
mcs_lmac_init(mcs, lmac);
/* Parser configuration */
mcs->mcs_ops->mcs_parser_cfg(mcs);
err = mcs_register_interrupts(mcs);
if (err)
goto exit;
list_add(&mcs->mcs_list, &mcs_list);
mutex_init(&mcs->stats_lock);
return 0;
err_x2p:
/* Enable external bypass */
mcs_set_external_bypass(mcs, true);
exit:
pci_release_regions(pdev);
pci_disable_device(pdev);
pci_set_drvdata(pdev, NULL);
return err;
}
static void mcs_remove(struct pci_dev *pdev)
{
struct mcs *mcs = pci_get_drvdata(pdev);
/* Set MCS to external bypass */
mcs_set_external_bypass(mcs, true);
free_irq(pci_irq_vector(pdev, mcs->hw->ip_vec), mcs);
pci_free_irq_vectors(pdev);
pci_release_regions(pdev);
pci_disable_device(pdev);
pci_set_drvdata(pdev, NULL);
}
struct pci_driver mcs_driver = {
.name = DRV_NAME,
.id_table = mcs_id_table,
.probe = mcs_probe,
.remove = mcs_remove,
};