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linux-zen-server/drivers/net/ethernet/marvell/mvpp2/mvpp2_prs.c

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Initial commit
2023-08-30 17:53:23 +02:00
// SPDX-License-Identifier: GPL-2.0
/*
* Header Parser helpers for Marvell PPv2 Network Controller
*
* Copyright (C) 2014 Marvell
*
* Marcin Wojtas <mw@semihalf.com>
*/
#include <linux/kernel.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/platform_device.h>
#include <uapi/linux/ppp_defs.h>
#include <net/ip.h>
#include <net/ipv6.h>
#include "mvpp2.h"
#include "mvpp2_prs.h"
/* Update parser tcam and sram hw entries */
static int mvpp2_prs_hw_write(struct mvpp2 *priv, struct mvpp2_prs_entry *pe)
{
int i;
if (pe->index > MVPP2_PRS_TCAM_SRAM_SIZE - 1)
return -EINVAL;
/* Clear entry invalidation bit */
pe->tcam[MVPP2_PRS_TCAM_INV_WORD] &= ~MVPP2_PRS_TCAM_INV_MASK;
/* Write sram index - indirect access */
mvpp2_write(priv, MVPP2_PRS_SRAM_IDX_REG, pe->index);
for (i = 0; i < MVPP2_PRS_SRAM_WORDS; i++)
mvpp2_write(priv, MVPP2_PRS_SRAM_DATA_REG(i), pe->sram[i]);
/* Write tcam index - indirect access */
mvpp2_write(priv, MVPP2_PRS_TCAM_IDX_REG, pe->index);
for (i = 0; i < MVPP2_PRS_TCAM_WORDS; i++)
mvpp2_write(priv, MVPP2_PRS_TCAM_DATA_REG(i), pe->tcam[i]);
return 0;
}
/* Initialize tcam entry from hw */
int mvpp2_prs_init_from_hw(struct mvpp2 *priv, struct mvpp2_prs_entry *pe,
int tid)
{
int i;
if (tid > MVPP2_PRS_TCAM_SRAM_SIZE - 1)
return -EINVAL;
memset(pe, 0, sizeof(*pe));
pe->index = tid;
/* Write tcam index - indirect access */
mvpp2_write(priv, MVPP2_PRS_TCAM_IDX_REG, pe->index);
pe->tcam[MVPP2_PRS_TCAM_INV_WORD] = mvpp2_read(priv,
MVPP2_PRS_TCAM_DATA_REG(MVPP2_PRS_TCAM_INV_WORD));
if (pe->tcam[MVPP2_PRS_TCAM_INV_WORD] & MVPP2_PRS_TCAM_INV_MASK)
return MVPP2_PRS_TCAM_ENTRY_INVALID;
for (i = 0; i < MVPP2_PRS_TCAM_WORDS; i++)
pe->tcam[i] = mvpp2_read(priv, MVPP2_PRS_TCAM_DATA_REG(i));
/* Write sram index - indirect access */
mvpp2_write(priv, MVPP2_PRS_SRAM_IDX_REG, pe->index);
for (i = 0; i < MVPP2_PRS_SRAM_WORDS; i++)
pe->sram[i] = mvpp2_read(priv, MVPP2_PRS_SRAM_DATA_REG(i));
return 0;
}
/* Invalidate tcam hw entry */
static void mvpp2_prs_hw_inv(struct mvpp2 *priv, int index)
{
/* Write index - indirect access */
mvpp2_write(priv, MVPP2_PRS_TCAM_IDX_REG, index);
mvpp2_write(priv, MVPP2_PRS_TCAM_DATA_REG(MVPP2_PRS_TCAM_INV_WORD),
MVPP2_PRS_TCAM_INV_MASK);
}
/* Enable shadow table entry and set its lookup ID */
static void mvpp2_prs_shadow_set(struct mvpp2 *priv, int index, int lu)
{
priv->prs_shadow[index].valid = true;
priv->prs_shadow[index].lu = lu;
}
/* Update ri fields in shadow table entry */
static void mvpp2_prs_shadow_ri_set(struct mvpp2 *priv, int index,
unsigned int ri, unsigned int ri_mask)
{
priv->prs_shadow[index].ri_mask = ri_mask;
priv->prs_shadow[index].ri = ri;
}
/* Update lookup field in tcam sw entry */
static void mvpp2_prs_tcam_lu_set(struct mvpp2_prs_entry *pe, unsigned int lu)
{
pe->tcam[MVPP2_PRS_TCAM_LU_WORD] &= ~MVPP2_PRS_TCAM_LU(MVPP2_PRS_LU_MASK);
pe->tcam[MVPP2_PRS_TCAM_LU_WORD] &= ~MVPP2_PRS_TCAM_LU_EN(MVPP2_PRS_LU_MASK);
pe->tcam[MVPP2_PRS_TCAM_LU_WORD] |= MVPP2_PRS_TCAM_LU(lu & MVPP2_PRS_LU_MASK);
pe->tcam[MVPP2_PRS_TCAM_LU_WORD] |= MVPP2_PRS_TCAM_LU_EN(MVPP2_PRS_LU_MASK);
}
/* Update mask for single port in tcam sw entry */
static void mvpp2_prs_tcam_port_set(struct mvpp2_prs_entry *pe,
unsigned int port, bool add)
{
if (add)
pe->tcam[MVPP2_PRS_TCAM_PORT_WORD] &= ~MVPP2_PRS_TCAM_PORT_EN(BIT(port));
else
pe->tcam[MVPP2_PRS_TCAM_PORT_WORD] |= MVPP2_PRS_TCAM_PORT_EN(BIT(port));
}
/* Update port map in tcam sw entry */
static void mvpp2_prs_tcam_port_map_set(struct mvpp2_prs_entry *pe,
unsigned int ports)
{
pe->tcam[MVPP2_PRS_TCAM_PORT_WORD] &= ~MVPP2_PRS_TCAM_PORT(MVPP2_PRS_PORT_MASK);
pe->tcam[MVPP2_PRS_TCAM_PORT_WORD] &= ~MVPP2_PRS_TCAM_PORT_EN(MVPP2_PRS_PORT_MASK);
pe->tcam[MVPP2_PRS_TCAM_PORT_WORD] |= MVPP2_PRS_TCAM_PORT_EN(~ports & MVPP2_PRS_PORT_MASK);
}
/* Obtain port map from tcam sw entry */
unsigned int mvpp2_prs_tcam_port_map_get(struct mvpp2_prs_entry *pe)
{
return (~pe->tcam[MVPP2_PRS_TCAM_PORT_WORD] >> 24) & MVPP2_PRS_PORT_MASK;
}
/* Set byte of data and its enable bits in tcam sw entry */
static void mvpp2_prs_tcam_data_byte_set(struct mvpp2_prs_entry *pe,
unsigned int offs, unsigned char byte,
unsigned char enable)
{
int pos = MVPP2_PRS_BYTE_IN_WORD(offs) * BITS_PER_BYTE;
pe->tcam[MVPP2_PRS_BYTE_TO_WORD(offs)] &= ~(0xff << pos);
pe->tcam[MVPP2_PRS_BYTE_TO_WORD(offs)] &= ~(MVPP2_PRS_TCAM_EN(0xff) << pos);
pe->tcam[MVPP2_PRS_BYTE_TO_WORD(offs)] |= byte << pos;
pe->tcam[MVPP2_PRS_BYTE_TO_WORD(offs)] |= MVPP2_PRS_TCAM_EN(enable << pos);
}
/* Get byte of data and its enable bits from tcam sw entry */
void mvpp2_prs_tcam_data_byte_get(struct mvpp2_prs_entry *pe,
unsigned int offs, unsigned char *byte,
unsigned char *enable)
{
int pos = MVPP2_PRS_BYTE_IN_WORD(offs) * BITS_PER_BYTE;
*byte = (pe->tcam[MVPP2_PRS_BYTE_TO_WORD(offs)] >> pos) & 0xff;
*enable = (pe->tcam[MVPP2_PRS_BYTE_TO_WORD(offs)] >> (pos + 16)) & 0xff;
}
/* Compare tcam data bytes with a pattern */
static bool mvpp2_prs_tcam_data_cmp(struct mvpp2_prs_entry *pe, int offs,
u16 data)
{
u16 tcam_data;
tcam_data = pe->tcam[MVPP2_PRS_BYTE_TO_WORD(offs)] & 0xffff;
return tcam_data == data;
}
/* Update ai bits in tcam sw entry */
static void mvpp2_prs_tcam_ai_update(struct mvpp2_prs_entry *pe,
unsigned int bits, unsigned int enable)
{
int i;
for (i = 0; i < MVPP2_PRS_AI_BITS; i++) {
if (!(enable & BIT(i)))
continue;
if (bits & BIT(i))
pe->tcam[MVPP2_PRS_TCAM_AI_WORD] |= BIT(i);
else
pe->tcam[MVPP2_PRS_TCAM_AI_WORD] &= ~BIT(i);
}
pe->tcam[MVPP2_PRS_TCAM_AI_WORD] |= MVPP2_PRS_TCAM_AI_EN(enable);
}
/* Get ai bits from tcam sw entry */
static int mvpp2_prs_tcam_ai_get(struct mvpp2_prs_entry *pe)
{
return pe->tcam[MVPP2_PRS_TCAM_AI_WORD] & MVPP2_PRS_AI_MASK;
}
/* Set ethertype in tcam sw entry */
static void mvpp2_prs_match_etype(struct mvpp2_prs_entry *pe, int offset,
unsigned short ethertype)
{
mvpp2_prs_tcam_data_byte_set(pe, offset + 0, ethertype >> 8, 0xff);
mvpp2_prs_tcam_data_byte_set(pe, offset + 1, ethertype & 0xff, 0xff);
}
/* Set vid in tcam sw entry */
static void mvpp2_prs_match_vid(struct mvpp2_prs_entry *pe, int offset,
unsigned short vid)
{
mvpp2_prs_tcam_data_byte_set(pe, offset + 0, (vid & 0xf00) >> 8, 0xf);
mvpp2_prs_tcam_data_byte_set(pe, offset + 1, vid & 0xff, 0xff);
}
/* Set bits in sram sw entry */
static void mvpp2_prs_sram_bits_set(struct mvpp2_prs_entry *pe, int bit_num,
u32 val)
{
pe->sram[MVPP2_BIT_TO_WORD(bit_num)] |= (val << (MVPP2_BIT_IN_WORD(bit_num)));
}
/* Clear bits in sram sw entry */
static void mvpp2_prs_sram_bits_clear(struct mvpp2_prs_entry *pe, int bit_num,
u32 val)
{
pe->sram[MVPP2_BIT_TO_WORD(bit_num)] &= ~(val << (MVPP2_BIT_IN_WORD(bit_num)));
}
/* Update ri bits in sram sw entry */
static void mvpp2_prs_sram_ri_update(struct mvpp2_prs_entry *pe,
unsigned int bits, unsigned int mask)
{
unsigned int i;
for (i = 0; i < MVPP2_PRS_SRAM_RI_CTRL_BITS; i++) {
if (!(mask & BIT(i)))
continue;
if (bits & BIT(i))
mvpp2_prs_sram_bits_set(pe, MVPP2_PRS_SRAM_RI_OFFS + i,
1);
else
mvpp2_prs_sram_bits_clear(pe,
MVPP2_PRS_SRAM_RI_OFFS + i,
1);
mvpp2_prs_sram_bits_set(pe, MVPP2_PRS_SRAM_RI_CTRL_OFFS + i, 1);
}
}
/* Obtain ri bits from sram sw entry */
static int mvpp2_prs_sram_ri_get(struct mvpp2_prs_entry *pe)
{
return pe->sram[MVPP2_PRS_SRAM_RI_WORD];
}
/* Update ai bits in sram sw entry */
static void mvpp2_prs_sram_ai_update(struct mvpp2_prs_entry *pe,
unsigned int bits, unsigned int mask)
{
unsigned int i;
for (i = 0; i < MVPP2_PRS_SRAM_AI_CTRL_BITS; i++) {
if (!(mask & BIT(i)))
continue;
if (bits & BIT(i))
mvpp2_prs_sram_bits_set(pe, MVPP2_PRS_SRAM_AI_OFFS + i,
1);
else
mvpp2_prs_sram_bits_clear(pe,
MVPP2_PRS_SRAM_AI_OFFS + i,
1);
mvpp2_prs_sram_bits_set(pe, MVPP2_PRS_SRAM_AI_CTRL_OFFS + i, 1);
}
}
/* Read ai bits from sram sw entry */
static int mvpp2_prs_sram_ai_get(struct mvpp2_prs_entry *pe)
{
u8 bits;
/* ai is stored on bits 90->97; so it spreads across two u32 */
int ai_off = MVPP2_BIT_TO_WORD(MVPP2_PRS_SRAM_AI_OFFS);
int ai_shift = MVPP2_BIT_IN_WORD(MVPP2_PRS_SRAM_AI_OFFS);
bits = (pe->sram[ai_off] >> ai_shift) |
(pe->sram[ai_off + 1] << (32 - ai_shift));
return bits;
}
/* In sram sw entry set lookup ID field of the tcam key to be used in the next
* lookup interation
*/
static void mvpp2_prs_sram_next_lu_set(struct mvpp2_prs_entry *pe,
unsigned int lu)
{
int sram_next_off = MVPP2_PRS_SRAM_NEXT_LU_OFFS;
mvpp2_prs_sram_bits_clear(pe, sram_next_off,
MVPP2_PRS_SRAM_NEXT_LU_MASK);
mvpp2_prs_sram_bits_set(pe, sram_next_off, lu);
}
/* In the sram sw entry set sign and value of the next lookup offset
* and the offset value generated to the classifier
*/
static void mvpp2_prs_sram_shift_set(struct mvpp2_prs_entry *pe, int shift,
unsigned int op)
{
/* Set sign */
if (shift < 0) {
mvpp2_prs_sram_bits_set(pe, MVPP2_PRS_SRAM_SHIFT_SIGN_BIT, 1);
shift = 0 - shift;
} else {
mvpp2_prs_sram_bits_clear(pe, MVPP2_PRS_SRAM_SHIFT_SIGN_BIT, 1);
}
/* Set value */
pe->sram[MVPP2_BIT_TO_WORD(MVPP2_PRS_SRAM_SHIFT_OFFS)] |=
shift & MVPP2_PRS_SRAM_SHIFT_MASK;
/* Reset and set operation */
mvpp2_prs_sram_bits_clear(pe, MVPP2_PRS_SRAM_OP_SEL_SHIFT_OFFS,
MVPP2_PRS_SRAM_OP_SEL_SHIFT_MASK);
mvpp2_prs_sram_bits_set(pe, MVPP2_PRS_SRAM_OP_SEL_SHIFT_OFFS, op);
/* Set base offset as current */
mvpp2_prs_sram_bits_clear(pe, MVPP2_PRS_SRAM_OP_SEL_BASE_OFFS, 1);
}
/* In the sram sw entry set sign and value of the user defined offset
* generated to the classifier
*/
static void mvpp2_prs_sram_offset_set(struct mvpp2_prs_entry *pe,
unsigned int type, int offset,
unsigned int op)
{
/* Set sign */
if (offset < 0) {
mvpp2_prs_sram_bits_set(pe, MVPP2_PRS_SRAM_UDF_SIGN_BIT, 1);
offset = 0 - offset;
} else {
mvpp2_prs_sram_bits_clear(pe, MVPP2_PRS_SRAM_UDF_SIGN_BIT, 1);
}
/* Set value */
mvpp2_prs_sram_bits_clear(pe, MVPP2_PRS_SRAM_UDF_OFFS,
MVPP2_PRS_SRAM_UDF_MASK);
mvpp2_prs_sram_bits_set(pe, MVPP2_PRS_SRAM_UDF_OFFS,
offset & MVPP2_PRS_SRAM_UDF_MASK);
/* Set offset type */
mvpp2_prs_sram_bits_clear(pe, MVPP2_PRS_SRAM_UDF_TYPE_OFFS,
MVPP2_PRS_SRAM_UDF_TYPE_MASK);
mvpp2_prs_sram_bits_set(pe, MVPP2_PRS_SRAM_UDF_TYPE_OFFS, type);
/* Set offset operation */
mvpp2_prs_sram_bits_clear(pe, MVPP2_PRS_SRAM_OP_SEL_UDF_OFFS,
MVPP2_PRS_SRAM_OP_SEL_UDF_MASK);
mvpp2_prs_sram_bits_set(pe, MVPP2_PRS_SRAM_OP_SEL_UDF_OFFS,
op & MVPP2_PRS_SRAM_OP_SEL_UDF_MASK);
/* Set base offset as current */
mvpp2_prs_sram_bits_clear(pe, MVPP2_PRS_SRAM_OP_SEL_BASE_OFFS, 1);
}
/* Find parser flow entry */
static int mvpp2_prs_flow_find(struct mvpp2 *priv, int flow)
{
struct mvpp2_prs_entry pe;
int tid;
/* Go through the all entires with MVPP2_PRS_LU_FLOWS */
for (tid = MVPP2_PRS_TCAM_SRAM_SIZE - 1; tid >= 0; tid--) {
u8 bits;
if (!priv->prs_shadow[tid].valid ||
priv->prs_shadow[tid].lu != MVPP2_PRS_LU_FLOWS)
continue;
mvpp2_prs_init_from_hw(priv, &pe, tid);
bits = mvpp2_prs_sram_ai_get(&pe);
/* Sram store classification lookup ID in AI bits [5:0] */
if ((bits & MVPP2_PRS_FLOW_ID_MASK) == flow)
return tid;
}
return -ENOENT;
}
/* Return first free tcam index, seeking from start to end */
static int mvpp2_prs_tcam_first_free(struct mvpp2 *priv, unsigned char start,
unsigned char end)
{
int tid;
if (start > end)
swap(start, end);
for (tid = start; tid <= end; tid++) {
if (!priv->prs_shadow[tid].valid)
return tid;
}
return -EINVAL;
}
/* Drop flow control pause frames */
static void mvpp2_prs_drop_fc(struct mvpp2 *priv)
{
unsigned char da[ETH_ALEN] = { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x01 };
struct mvpp2_prs_entry pe;
unsigned int len;
memset(&pe, 0, sizeof(pe));
/* For all ports - drop flow control frames */
pe.index = MVPP2_PE_FC_DROP;
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_MAC);
/* Set match on DA */
len = ETH_ALEN;
while (len--)
mvpp2_prs_tcam_data_byte_set(&pe, len, da[len], 0xff);
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_DROP_MASK,
MVPP2_PRS_RI_DROP_MASK);
mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1);
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS);
/* Mask all ports */
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
/* Update shadow table and hw entry */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_MAC);
mvpp2_prs_hw_write(priv, &pe);
}
/* Enable/disable dropping all mac da's */
static void mvpp2_prs_mac_drop_all_set(struct mvpp2 *priv, int port, bool add)
{
struct mvpp2_prs_entry pe;
if (priv->prs_shadow[MVPP2_PE_DROP_ALL].valid) {
/* Entry exist - update port only */
mvpp2_prs_init_from_hw(priv, &pe, MVPP2_PE_DROP_ALL);
} else {
/* Entry doesn't exist - create new */
memset(&pe, 0, sizeof(pe));
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_MAC);
pe.index = MVPP2_PE_DROP_ALL;
/* Non-promiscuous mode for all ports - DROP unknown packets */
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_DROP_MASK,
MVPP2_PRS_RI_DROP_MASK);
mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1);
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS);
/* Update shadow table */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_MAC);
/* Mask all ports */
mvpp2_prs_tcam_port_map_set(&pe, 0);
}
/* Update port mask */
mvpp2_prs_tcam_port_set(&pe, port, add);
mvpp2_prs_hw_write(priv, &pe);
}
/* Set port to unicast or multicast promiscuous mode */
void mvpp2_prs_mac_promisc_set(struct mvpp2 *priv, int port,
enum mvpp2_prs_l2_cast l2_cast, bool add)
{
struct mvpp2_prs_entry pe;
unsigned char cast_match;
unsigned int ri;
int tid;
if (l2_cast == MVPP2_PRS_L2_UNI_CAST) {
cast_match = MVPP2_PRS_UCAST_VAL;
tid = MVPP2_PE_MAC_UC_PROMISCUOUS;
ri = MVPP2_PRS_RI_L2_UCAST;
} else {
cast_match = MVPP2_PRS_MCAST_VAL;
tid = MVPP2_PE_MAC_MC_PROMISCUOUS;
ri = MVPP2_PRS_RI_L2_MCAST;
}
/* promiscuous mode - Accept unknown unicast or multicast packets */
if (priv->prs_shadow[tid].valid) {
mvpp2_prs_init_from_hw(priv, &pe, tid);
} else {
memset(&pe, 0, sizeof(pe));
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_MAC);
pe.index = tid;
/* Continue - set next lookup */
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_DSA);
/* Set result info bits */
mvpp2_prs_sram_ri_update(&pe, ri, MVPP2_PRS_RI_L2_CAST_MASK);
/* Match UC or MC addresses */
mvpp2_prs_tcam_data_byte_set(&pe, 0, cast_match,
MVPP2_PRS_CAST_MASK);
/* Shift to ethertype */
mvpp2_prs_sram_shift_set(&pe, 2 * ETH_ALEN,
MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
/* Mask all ports */
mvpp2_prs_tcam_port_map_set(&pe, 0);
/* Update shadow table */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_MAC);
}
/* Update port mask */
mvpp2_prs_tcam_port_set(&pe, port, add);
mvpp2_prs_hw_write(priv, &pe);
}
/* Set entry for dsa packets */
static void mvpp2_prs_dsa_tag_set(struct mvpp2 *priv, int port, bool add,
bool tagged, bool extend)
{
struct mvpp2_prs_entry pe;
int tid, shift;
if (extend) {
tid = tagged ? MVPP2_PE_EDSA_TAGGED : MVPP2_PE_EDSA_UNTAGGED;
shift = 8;
} else {
tid = tagged ? MVPP2_PE_DSA_TAGGED : MVPP2_PE_DSA_UNTAGGED;
shift = 4;
}
if (priv->prs_shadow[tid].valid) {
/* Entry exist - update port only */
mvpp2_prs_init_from_hw(priv, &pe, tid);
} else {
/* Entry doesn't exist - create new */
memset(&pe, 0, sizeof(pe));
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_DSA);
pe.index = tid;
/* Update shadow table */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_DSA);
if (tagged) {
/* Set tagged bit in DSA tag */
mvpp2_prs_tcam_data_byte_set(&pe, 0,
MVPP2_PRS_TCAM_DSA_TAGGED_BIT,
MVPP2_PRS_TCAM_DSA_TAGGED_BIT);
/* Set ai bits for next iteration */
if (extend)
mvpp2_prs_sram_ai_update(&pe, 1,
MVPP2_PRS_SRAM_AI_MASK);
else
mvpp2_prs_sram_ai_update(&pe, 0,
MVPP2_PRS_SRAM_AI_MASK);
/* Set result info bits to 'single vlan' */
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_VLAN_SINGLE,
MVPP2_PRS_RI_VLAN_MASK);
/* If packet is tagged continue check vid filtering */
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_VID);
} else {
/* Shift 4 bytes for DSA tag or 8 bytes for EDSA tag*/
mvpp2_prs_sram_shift_set(&pe, shift,
MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
/* Set result info bits to 'no vlans' */
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_VLAN_NONE,
MVPP2_PRS_RI_VLAN_MASK);
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_L2);
}
/* Mask all ports */
mvpp2_prs_tcam_port_map_set(&pe, 0);
}
/* Update port mask */
mvpp2_prs_tcam_port_set(&pe, port, add);
mvpp2_prs_hw_write(priv, &pe);
}
/* Set entry for dsa ethertype */
static void mvpp2_prs_dsa_tag_ethertype_set(struct mvpp2 *priv, int port,
bool add, bool tagged, bool extend)
{
struct mvpp2_prs_entry pe;
int tid, shift, port_mask;
if (extend) {
tid = tagged ? MVPP2_PE_ETYPE_EDSA_TAGGED :
MVPP2_PE_ETYPE_EDSA_UNTAGGED;
port_mask = 0;
shift = 8;
} else {
tid = tagged ? MVPP2_PE_ETYPE_DSA_TAGGED :
MVPP2_PE_ETYPE_DSA_UNTAGGED;
port_mask = MVPP2_PRS_PORT_MASK;
shift = 4;
}
if (priv->prs_shadow[tid].valid) {
/* Entry exist - update port only */
mvpp2_prs_init_from_hw(priv, &pe, tid);
} else {
/* Entry doesn't exist - create new */
memset(&pe, 0, sizeof(pe));
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_DSA);
pe.index = tid;
/* Set ethertype */
mvpp2_prs_match_etype(&pe, 0, ETH_P_EDSA);
mvpp2_prs_match_etype(&pe, 2, 0);
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_DSA_MASK,
MVPP2_PRS_RI_DSA_MASK);
/* Shift ethertype + 2 byte reserved + tag*/
mvpp2_prs_sram_shift_set(&pe, 2 + MVPP2_ETH_TYPE_LEN + shift,
MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
/* Update shadow table */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_DSA);
if (tagged) {
/* Set tagged bit in DSA tag */
mvpp2_prs_tcam_data_byte_set(&pe,
MVPP2_ETH_TYPE_LEN + 2 + 3,
MVPP2_PRS_TCAM_DSA_TAGGED_BIT,
MVPP2_PRS_TCAM_DSA_TAGGED_BIT);
/* Clear all ai bits for next iteration */
mvpp2_prs_sram_ai_update(&pe, 0,
MVPP2_PRS_SRAM_AI_MASK);
/* If packet is tagged continue check vlans */
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_VLAN);
} else {
/* Set result info bits to 'no vlans' */
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_VLAN_NONE,
MVPP2_PRS_RI_VLAN_MASK);
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_L2);
}
/* Mask/unmask all ports, depending on dsa type */
mvpp2_prs_tcam_port_map_set(&pe, port_mask);
}
/* Update port mask */
mvpp2_prs_tcam_port_set(&pe, port, add);
mvpp2_prs_hw_write(priv, &pe);
}
/* Search for existing single/triple vlan entry */
static int mvpp2_prs_vlan_find(struct mvpp2 *priv, unsigned short tpid, int ai)
{
struct mvpp2_prs_entry pe;
int tid;
/* Go through the all entries with MVPP2_PRS_LU_VLAN */
for (tid = MVPP2_PE_FIRST_FREE_TID;
tid <= MVPP2_PE_LAST_FREE_TID; tid++) {
unsigned int ri_bits, ai_bits;
bool match;
if (!priv->prs_shadow[tid].valid ||
priv->prs_shadow[tid].lu != MVPP2_PRS_LU_VLAN)
continue;
mvpp2_prs_init_from_hw(priv, &pe, tid);
match = mvpp2_prs_tcam_data_cmp(&pe, 0, tpid);
if (!match)
continue;
/* Get vlan type */
ri_bits = mvpp2_prs_sram_ri_get(&pe);
ri_bits &= MVPP2_PRS_RI_VLAN_MASK;
/* Get current ai value from tcam */
ai_bits = mvpp2_prs_tcam_ai_get(&pe);
/* Clear double vlan bit */
ai_bits &= ~MVPP2_PRS_DBL_VLAN_AI_BIT;
if (ai != ai_bits)
continue;
if (ri_bits == MVPP2_PRS_RI_VLAN_SINGLE ||
ri_bits == MVPP2_PRS_RI_VLAN_TRIPLE)
return tid;
}
return -ENOENT;
}
/* Add/update single/triple vlan entry */
static int mvpp2_prs_vlan_add(struct mvpp2 *priv, unsigned short tpid, int ai,
unsigned int port_map)
{
struct mvpp2_prs_entry pe;
int tid_aux, tid;
int ret = 0;
memset(&pe, 0, sizeof(pe));
tid = mvpp2_prs_vlan_find(priv, tpid, ai);
if (tid < 0) {
/* Create new tcam entry */
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_LAST_FREE_TID,
MVPP2_PE_FIRST_FREE_TID);
if (tid < 0)
return tid;
/* Get last double vlan tid */
for (tid_aux = MVPP2_PE_LAST_FREE_TID;
tid_aux >= MVPP2_PE_FIRST_FREE_TID; tid_aux--) {
unsigned int ri_bits;
if (!priv->prs_shadow[tid_aux].valid ||
priv->prs_shadow[tid_aux].lu != MVPP2_PRS_LU_VLAN)
continue;
mvpp2_prs_init_from_hw(priv, &pe, tid_aux);
ri_bits = mvpp2_prs_sram_ri_get(&pe);
if ((ri_bits & MVPP2_PRS_RI_VLAN_MASK) ==
MVPP2_PRS_RI_VLAN_DOUBLE)
break;
}
if (tid <= tid_aux)
return -EINVAL;
memset(&pe, 0, sizeof(pe));
pe.index = tid;
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_VLAN);
mvpp2_prs_match_etype(&pe, 0, tpid);
/* VLAN tag detected, proceed with VID filtering */
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_VID);
/* Clear all ai bits for next iteration */
mvpp2_prs_sram_ai_update(&pe, 0, MVPP2_PRS_SRAM_AI_MASK);
if (ai == MVPP2_PRS_SINGLE_VLAN_AI) {
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_VLAN_SINGLE,
MVPP2_PRS_RI_VLAN_MASK);
} else {
ai |= MVPP2_PRS_DBL_VLAN_AI_BIT;
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_VLAN_TRIPLE,
MVPP2_PRS_RI_VLAN_MASK);
}
mvpp2_prs_tcam_ai_update(&pe, ai, MVPP2_PRS_SRAM_AI_MASK);
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_VLAN);
} else {
mvpp2_prs_init_from_hw(priv, &pe, tid);
}
/* Update ports' mask */
mvpp2_prs_tcam_port_map_set(&pe, port_map);
mvpp2_prs_hw_write(priv, &pe);
return ret;
}
/* Get first free double vlan ai number */
static int mvpp2_prs_double_vlan_ai_free_get(struct mvpp2 *priv)
{
int i;
for (i = 1; i < MVPP2_PRS_DBL_VLANS_MAX; i++) {
if (!priv->prs_double_vlans[i])
return i;
}
return -EINVAL;
}
/* Search for existing double vlan entry */
static int mvpp2_prs_double_vlan_find(struct mvpp2 *priv, unsigned short tpid1,
unsigned short tpid2)
{
struct mvpp2_prs_entry pe;
int tid;
/* Go through the all entries with MVPP2_PRS_LU_VLAN */
for (tid = MVPP2_PE_FIRST_FREE_TID;
tid <= MVPP2_PE_LAST_FREE_TID; tid++) {
unsigned int ri_mask;
bool match;
if (!priv->prs_shadow[tid].valid ||
priv->prs_shadow[tid].lu != MVPP2_PRS_LU_VLAN)
continue;
mvpp2_prs_init_from_hw(priv, &pe, tid);
match = mvpp2_prs_tcam_data_cmp(&pe, 0, tpid1) &&
mvpp2_prs_tcam_data_cmp(&pe, 4, tpid2);
if (!match)
continue;
ri_mask = mvpp2_prs_sram_ri_get(&pe) & MVPP2_PRS_RI_VLAN_MASK;
if (ri_mask == MVPP2_PRS_RI_VLAN_DOUBLE)
return tid;
}
return -ENOENT;
}
/* Add or update double vlan entry */
static int mvpp2_prs_double_vlan_add(struct mvpp2 *priv, unsigned short tpid1,
unsigned short tpid2,
unsigned int port_map)
{
int tid_aux, tid, ai, ret = 0;
struct mvpp2_prs_entry pe;
memset(&pe, 0, sizeof(pe));
tid = mvpp2_prs_double_vlan_find(priv, tpid1, tpid2);
if (tid < 0) {
/* Create new tcam entry */
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID,
MVPP2_PE_LAST_FREE_TID);
if (tid < 0)
return tid;
/* Set ai value for new double vlan entry */
ai = mvpp2_prs_double_vlan_ai_free_get(priv);
if (ai < 0)
return ai;
/* Get first single/triple vlan tid */
for (tid_aux = MVPP2_PE_FIRST_FREE_TID;
tid_aux <= MVPP2_PE_LAST_FREE_TID; tid_aux++) {
unsigned int ri_bits;
if (!priv->prs_shadow[tid_aux].valid ||
priv->prs_shadow[tid_aux].lu != MVPP2_PRS_LU_VLAN)
continue;
mvpp2_prs_init_from_hw(priv, &pe, tid_aux);
ri_bits = mvpp2_prs_sram_ri_get(&pe);
ri_bits &= MVPP2_PRS_RI_VLAN_MASK;
if (ri_bits == MVPP2_PRS_RI_VLAN_SINGLE ||
ri_bits == MVPP2_PRS_RI_VLAN_TRIPLE)
break;
}
if (tid >= tid_aux)
return -ERANGE;
memset(&pe, 0, sizeof(pe));
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_VLAN);
pe.index = tid;
priv->prs_double_vlans[ai] = true;
mvpp2_prs_match_etype(&pe, 0, tpid1);
mvpp2_prs_match_etype(&pe, 4, tpid2);
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_VLAN);
/* Shift 4 bytes - skip outer vlan tag */
mvpp2_prs_sram_shift_set(&pe, MVPP2_VLAN_TAG_LEN,
MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_VLAN_DOUBLE,
MVPP2_PRS_RI_VLAN_MASK);
mvpp2_prs_sram_ai_update(&pe, ai | MVPP2_PRS_DBL_VLAN_AI_BIT,
MVPP2_PRS_SRAM_AI_MASK);
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_VLAN);
} else {
mvpp2_prs_init_from_hw(priv, &pe, tid);
}
/* Update ports' mask */
mvpp2_prs_tcam_port_map_set(&pe, port_map);
mvpp2_prs_hw_write(priv, &pe);
return ret;
}
/* IPv4 header parsing for fragmentation and L4 offset */
static int mvpp2_prs_ip4_proto(struct mvpp2 *priv, unsigned short proto,
unsigned int ri, unsigned int ri_mask)
{
struct mvpp2_prs_entry pe;
int tid;
if ((proto != IPPROTO_TCP) && (proto != IPPROTO_UDP) &&
(proto != IPPROTO_IGMP))
return -EINVAL;
/* Not fragmented packet */
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID,
MVPP2_PE_LAST_FREE_TID);
if (tid < 0)
return tid;
memset(&pe, 0, sizeof(pe));
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_IP4);
pe.index = tid;
/* Finished: go to flowid generation */
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS);
mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1);
/* Set L3 offset */
mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L3, -4,
MVPP2_PRS_SRAM_OP_SEL_UDF_ADD);
mvpp2_prs_sram_ai_update(&pe, 0, MVPP2_PRS_IPV4_DIP_AI_BIT);
mvpp2_prs_sram_ri_update(&pe, ri, ri_mask | MVPP2_PRS_RI_IP_FRAG_MASK);
mvpp2_prs_tcam_data_byte_set(&pe, 2, 0x00,
MVPP2_PRS_TCAM_PROTO_MASK_L);
mvpp2_prs_tcam_data_byte_set(&pe, 3, 0x00,
MVPP2_PRS_TCAM_PROTO_MASK);
mvpp2_prs_tcam_data_byte_set(&pe, 5, proto, MVPP2_PRS_TCAM_PROTO_MASK);
mvpp2_prs_tcam_ai_update(&pe, MVPP2_PRS_IPV4_DIP_AI_BIT,
MVPP2_PRS_IPV4_DIP_AI_BIT);
/* Unmask all ports */
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
/* Update shadow table and hw entry */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_IP4);
mvpp2_prs_hw_write(priv, &pe);
/* Fragmented packet */
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID,
MVPP2_PE_LAST_FREE_TID);
if (tid < 0)
return tid;
pe.index = tid;
/* Clear ri before updating */
pe.sram[MVPP2_PRS_SRAM_RI_WORD] = 0x0;
pe.sram[MVPP2_PRS_SRAM_RI_CTRL_WORD] = 0x0;
mvpp2_prs_sram_ri_update(&pe, ri, ri_mask);
mvpp2_prs_sram_ri_update(&pe, ri | MVPP2_PRS_RI_IP_FRAG_TRUE,
ri_mask | MVPP2_PRS_RI_IP_FRAG_MASK);
mvpp2_prs_tcam_data_byte_set(&pe, 2, 0x00, 0x0);
mvpp2_prs_tcam_data_byte_set(&pe, 3, 0x00, 0x0);
/* Update shadow table and hw entry */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_IP4);
mvpp2_prs_hw_write(priv, &pe);
return 0;
}
/* IPv4 L3 multicast or broadcast */
static int mvpp2_prs_ip4_cast(struct mvpp2 *priv, unsigned short l3_cast)
{
struct mvpp2_prs_entry pe;
int mask, tid;
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID,
MVPP2_PE_LAST_FREE_TID);
if (tid < 0)
return tid;
memset(&pe, 0, sizeof(pe));
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_IP4);
pe.index = tid;
switch (l3_cast) {
case MVPP2_PRS_L3_MULTI_CAST:
mvpp2_prs_tcam_data_byte_set(&pe, 0, MVPP2_PRS_IPV4_MC,
MVPP2_PRS_IPV4_MC_MASK);
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_MCAST,
MVPP2_PRS_RI_L3_ADDR_MASK);
break;
case MVPP2_PRS_L3_BROAD_CAST:
mask = MVPP2_PRS_IPV4_BC_MASK;
mvpp2_prs_tcam_data_byte_set(&pe, 0, mask, mask);
mvpp2_prs_tcam_data_byte_set(&pe, 1, mask, mask);
mvpp2_prs_tcam_data_byte_set(&pe, 2, mask, mask);
mvpp2_prs_tcam_data_byte_set(&pe, 3, mask, mask);
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_BCAST,
MVPP2_PRS_RI_L3_ADDR_MASK);
break;
default:
return -EINVAL;
}
/* Go again to ipv4 */
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_IP4);
mvpp2_prs_sram_ai_update(&pe, MVPP2_PRS_IPV4_DIP_AI_BIT,
MVPP2_PRS_IPV4_DIP_AI_BIT);
/* Shift back to IPv4 proto */
mvpp2_prs_sram_shift_set(&pe, -12, MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
mvpp2_prs_tcam_ai_update(&pe, 0, MVPP2_PRS_IPV4_DIP_AI_BIT);
/* Unmask all ports */
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
/* Update shadow table and hw entry */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_IP4);
mvpp2_prs_hw_write(priv, &pe);
return 0;
}
/* Set entries for protocols over IPv6 */
static int mvpp2_prs_ip6_proto(struct mvpp2 *priv, unsigned short proto,
unsigned int ri, unsigned int ri_mask)
{
struct mvpp2_prs_entry pe;
int tid;
if ((proto != IPPROTO_TCP) && (proto != IPPROTO_UDP) &&
(proto != IPPROTO_ICMPV6) && (proto != IPPROTO_IPIP))
return -EINVAL;
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID,
MVPP2_PE_LAST_FREE_TID);
if (tid < 0)
return tid;
memset(&pe, 0, sizeof(pe));
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_IP6);
pe.index = tid;
/* Finished: go to flowid generation */
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS);
mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1);
mvpp2_prs_sram_ri_update(&pe, ri, ri_mask);
mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L4,
sizeof(struct ipv6hdr) - 6,
MVPP2_PRS_SRAM_OP_SEL_UDF_ADD);
mvpp2_prs_tcam_data_byte_set(&pe, 0, proto, MVPP2_PRS_TCAM_PROTO_MASK);
mvpp2_prs_tcam_ai_update(&pe, MVPP2_PRS_IPV6_NO_EXT_AI_BIT,
MVPP2_PRS_IPV6_NO_EXT_AI_BIT);
/* Unmask all ports */
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
/* Write HW */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_IP6);
mvpp2_prs_hw_write(priv, &pe);
return 0;
}
/* IPv6 L3 multicast entry */
static int mvpp2_prs_ip6_cast(struct mvpp2 *priv, unsigned short l3_cast)
{
struct mvpp2_prs_entry pe;
int tid;
if (l3_cast != MVPP2_PRS_L3_MULTI_CAST)
return -EINVAL;
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID,
MVPP2_PE_LAST_FREE_TID);
if (tid < 0)
return tid;
memset(&pe, 0, sizeof(pe));
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_IP6);
pe.index = tid;
/* Finished: go to flowid generation */
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_IP6);
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_MCAST,
MVPP2_PRS_RI_L3_ADDR_MASK);
mvpp2_prs_sram_ai_update(&pe, MVPP2_PRS_IPV6_NO_EXT_AI_BIT,
MVPP2_PRS_IPV6_NO_EXT_AI_BIT);
/* Shift back to IPv6 NH */
mvpp2_prs_sram_shift_set(&pe, -18, MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
mvpp2_prs_tcam_data_byte_set(&pe, 0, MVPP2_PRS_IPV6_MC,
MVPP2_PRS_IPV6_MC_MASK);
mvpp2_prs_tcam_ai_update(&pe, 0, MVPP2_PRS_IPV6_NO_EXT_AI_BIT);
/* Unmask all ports */
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
/* Update shadow table and hw entry */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_IP6);
mvpp2_prs_hw_write(priv, &pe);
return 0;
}
/* Parser per-port initialization */
static void mvpp2_prs_hw_port_init(struct mvpp2 *priv, int port, int lu_first,
int lu_max, int offset)
{
u32 val;
/* Set lookup ID */
val = mvpp2_read(priv, MVPP2_PRS_INIT_LOOKUP_REG);
val &= ~MVPP2_PRS_PORT_LU_MASK(port);
val |= MVPP2_PRS_PORT_LU_VAL(port, lu_first);
mvpp2_write(priv, MVPP2_PRS_INIT_LOOKUP_REG, val);
/* Set maximum number of loops for packet received from port */
val = mvpp2_read(priv, MVPP2_PRS_MAX_LOOP_REG(port));
val &= ~MVPP2_PRS_MAX_LOOP_MASK(port);
val |= MVPP2_PRS_MAX_LOOP_VAL(port, lu_max);
mvpp2_write(priv, MVPP2_PRS_MAX_LOOP_REG(port), val);
/* Set initial offset for packet header extraction for the first
* searching loop
*/
val = mvpp2_read(priv, MVPP2_PRS_INIT_OFFS_REG(port));
val &= ~MVPP2_PRS_INIT_OFF_MASK(port);
val |= MVPP2_PRS_INIT_OFF_VAL(port, offset);
mvpp2_write(priv, MVPP2_PRS_INIT_OFFS_REG(port), val);
}
/* Default flow entries initialization for all ports */
static void mvpp2_prs_def_flow_init(struct mvpp2 *priv)
{
struct mvpp2_prs_entry pe;
int port;
for (port = 0; port < MVPP2_MAX_PORTS; port++) {
memset(&pe, 0, sizeof(pe));
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_FLOWS);
pe.index = MVPP2_PE_FIRST_DEFAULT_FLOW - port;
/* Mask all ports */
mvpp2_prs_tcam_port_map_set(&pe, 0);
/* Set flow ID*/
mvpp2_prs_sram_ai_update(&pe, port, MVPP2_PRS_FLOW_ID_MASK);
mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_DONE_BIT, 1);
/* Update shadow table and hw entry */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_FLOWS);
mvpp2_prs_hw_write(priv, &pe);
}
}
/* Set default entry for Marvell Header field */
static void mvpp2_prs_mh_init(struct mvpp2 *priv)
{
struct mvpp2_prs_entry pe;
memset(&pe, 0, sizeof(pe));
pe.index = MVPP2_PE_MH_DEFAULT;
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_MH);
mvpp2_prs_sram_shift_set(&pe, MVPP2_MH_SIZE,
MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_MAC);
/* Unmask all ports */
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
/* Update shadow table and hw entry */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_MH);
mvpp2_prs_hw_write(priv, &pe);
/* Set MH entry that skip parser */
pe.index = MVPP2_PE_MH_SKIP_PRS;
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_MH);
mvpp2_prs_sram_shift_set(&pe, MVPP2_MH_SIZE,
MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1);
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS);
/* Mask all ports */
mvpp2_prs_tcam_port_map_set(&pe, 0);
/* Update shadow table and hw entry */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_MH);
mvpp2_prs_hw_write(priv, &pe);
}
/* Set default entires (place holder) for promiscuous, non-promiscuous and
* multicast MAC addresses
*/
static void mvpp2_prs_mac_init(struct mvpp2 *priv)
{
struct mvpp2_prs_entry pe;
memset(&pe, 0, sizeof(pe));
/* Non-promiscuous mode for all ports - DROP unknown packets */
pe.index = MVPP2_PE_MAC_NON_PROMISCUOUS;
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_MAC);
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_DROP_MASK,
MVPP2_PRS_RI_DROP_MASK);
mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1);
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS);
/* Unmask all ports */
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
/* Update shadow table and hw entry */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_MAC);
mvpp2_prs_hw_write(priv, &pe);
/* Create dummy entries for drop all and promiscuous modes */
mvpp2_prs_drop_fc(priv);
mvpp2_prs_mac_drop_all_set(priv, 0, false);
mvpp2_prs_mac_promisc_set(priv, 0, MVPP2_PRS_L2_UNI_CAST, false);
mvpp2_prs_mac_promisc_set(priv, 0, MVPP2_PRS_L2_MULTI_CAST, false);
}
/* Set default entries for various types of dsa packets */
static void mvpp2_prs_dsa_init(struct mvpp2 *priv)
{
struct mvpp2_prs_entry pe;
/* None tagged EDSA entry - place holder */
mvpp2_prs_dsa_tag_set(priv, 0, false, MVPP2_PRS_UNTAGGED,
MVPP2_PRS_EDSA);
/* Tagged EDSA entry - place holder */
mvpp2_prs_dsa_tag_set(priv, 0, false, MVPP2_PRS_TAGGED, MVPP2_PRS_EDSA);
/* None tagged DSA entry - place holder */
mvpp2_prs_dsa_tag_set(priv, 0, false, MVPP2_PRS_UNTAGGED,
MVPP2_PRS_DSA);
/* Tagged DSA entry - place holder */
mvpp2_prs_dsa_tag_set(priv, 0, false, MVPP2_PRS_TAGGED, MVPP2_PRS_DSA);
/* None tagged EDSA ethertype entry - place holder*/
mvpp2_prs_dsa_tag_ethertype_set(priv, 0, false,
MVPP2_PRS_UNTAGGED, MVPP2_PRS_EDSA);
/* Tagged EDSA ethertype entry - place holder*/
mvpp2_prs_dsa_tag_ethertype_set(priv, 0, false,
MVPP2_PRS_TAGGED, MVPP2_PRS_EDSA);
/* None tagged DSA ethertype entry */
mvpp2_prs_dsa_tag_ethertype_set(priv, 0, true,
MVPP2_PRS_UNTAGGED, MVPP2_PRS_DSA);
/* Tagged DSA ethertype entry */
mvpp2_prs_dsa_tag_ethertype_set(priv, 0, true,
MVPP2_PRS_TAGGED, MVPP2_PRS_DSA);
/* Set default entry, in case DSA or EDSA tag not found */
memset(&pe, 0, sizeof(pe));
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_DSA);
pe.index = MVPP2_PE_DSA_DEFAULT;
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_VLAN);
/* Shift 0 bytes */
mvpp2_prs_sram_shift_set(&pe, 0, MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_MAC);
/* Clear all sram ai bits for next iteration */
mvpp2_prs_sram_ai_update(&pe, 0, MVPP2_PRS_SRAM_AI_MASK);
/* Unmask all ports */
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
mvpp2_prs_hw_write(priv, &pe);
}
/* Initialize parser entries for VID filtering */
static void mvpp2_prs_vid_init(struct mvpp2 *priv)
{
struct mvpp2_prs_entry pe;
memset(&pe, 0, sizeof(pe));
/* Set default vid entry */
pe.index = MVPP2_PE_VID_FLTR_DEFAULT;
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_VID);
mvpp2_prs_tcam_ai_update(&pe, 0, MVPP2_PRS_EDSA_VID_AI_BIT);
/* Skip VLAN header - Set offset to 4 bytes */
mvpp2_prs_sram_shift_set(&pe, MVPP2_VLAN_TAG_LEN,
MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
/* Clear all ai bits for next iteration */
mvpp2_prs_sram_ai_update(&pe, 0, MVPP2_PRS_SRAM_AI_MASK);
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_L2);
/* Unmask all ports */
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
/* Update shadow table and hw entry */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_VID);
mvpp2_prs_hw_write(priv, &pe);
/* Set default vid entry for extended DSA*/
memset(&pe, 0, sizeof(pe));
/* Set default vid entry */
pe.index = MVPP2_PE_VID_EDSA_FLTR_DEFAULT;
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_VID);
mvpp2_prs_tcam_ai_update(&pe, MVPP2_PRS_EDSA_VID_AI_BIT,
MVPP2_PRS_EDSA_VID_AI_BIT);
/* Skip VLAN header - Set offset to 8 bytes */
mvpp2_prs_sram_shift_set(&pe, MVPP2_VLAN_TAG_EDSA_LEN,
MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
/* Clear all ai bits for next iteration */
mvpp2_prs_sram_ai_update(&pe, 0, MVPP2_PRS_SRAM_AI_MASK);
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_L2);
/* Unmask all ports */
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
/* Update shadow table and hw entry */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_VID);
mvpp2_prs_hw_write(priv, &pe);
}
/* Match basic ethertypes */
static int mvpp2_prs_etype_init(struct mvpp2 *priv)
{
struct mvpp2_prs_entry pe;
int tid, ihl;
/* Ethertype: PPPoE */
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID,
MVPP2_PE_LAST_FREE_TID);
if (tid < 0)
return tid;
memset(&pe, 0, sizeof(pe));
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_L2);
pe.index = tid;
mvpp2_prs_match_etype(&pe, 0, ETH_P_PPP_SES);
mvpp2_prs_sram_shift_set(&pe, MVPP2_PPPOE_HDR_SIZE,
MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_PPPOE);
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_PPPOE_MASK,
MVPP2_PRS_RI_PPPOE_MASK);
/* Update shadow table and hw entry */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_L2);
priv->prs_shadow[pe.index].udf = MVPP2_PRS_UDF_L2_DEF;
priv->prs_shadow[pe.index].finish = false;
mvpp2_prs_shadow_ri_set(priv, pe.index, MVPP2_PRS_RI_PPPOE_MASK,
MVPP2_PRS_RI_PPPOE_MASK);
mvpp2_prs_hw_write(priv, &pe);
/* Ethertype: ARP */
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID,
MVPP2_PE_LAST_FREE_TID);
if (tid < 0)
return tid;
memset(&pe, 0, sizeof(pe));
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_L2);
pe.index = tid;
mvpp2_prs_match_etype(&pe, 0, ETH_P_ARP);
/* Generate flow in the next iteration*/
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS);
mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1);
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_ARP,
MVPP2_PRS_RI_L3_PROTO_MASK);
/* Set L3 offset */
mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L3,
MVPP2_ETH_TYPE_LEN,
MVPP2_PRS_SRAM_OP_SEL_UDF_ADD);
/* Update shadow table and hw entry */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_L2);
priv->prs_shadow[pe.index].udf = MVPP2_PRS_UDF_L2_DEF;
priv->prs_shadow[pe.index].finish = true;
mvpp2_prs_shadow_ri_set(priv, pe.index, MVPP2_PRS_RI_L3_ARP,
MVPP2_PRS_RI_L3_PROTO_MASK);
mvpp2_prs_hw_write(priv, &pe);
/* Ethertype: LBTD */
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID,
MVPP2_PE_LAST_FREE_TID);
if (tid < 0)
return tid;
memset(&pe, 0, sizeof(pe));
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_L2);
pe.index = tid;
mvpp2_prs_match_etype(&pe, 0, MVPP2_IP_LBDT_TYPE);
/* Generate flow in the next iteration*/
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS);
mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1);
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_CPU_CODE_RX_SPEC |
MVPP2_PRS_RI_UDF3_RX_SPECIAL,
MVPP2_PRS_RI_CPU_CODE_MASK |
MVPP2_PRS_RI_UDF3_MASK);
/* Set L3 offset */
mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L3,
MVPP2_ETH_TYPE_LEN,
MVPP2_PRS_SRAM_OP_SEL_UDF_ADD);
/* Update shadow table and hw entry */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_L2);
priv->prs_shadow[pe.index].udf = MVPP2_PRS_UDF_L2_DEF;
priv->prs_shadow[pe.index].finish = true;
mvpp2_prs_shadow_ri_set(priv, pe.index, MVPP2_PRS_RI_CPU_CODE_RX_SPEC |
MVPP2_PRS_RI_UDF3_RX_SPECIAL,
MVPP2_PRS_RI_CPU_CODE_MASK |
MVPP2_PRS_RI_UDF3_MASK);
mvpp2_prs_hw_write(priv, &pe);
/* Ethertype: IPv4 with header length >= 5 */
for (ihl = MVPP2_PRS_IPV4_IHL_MIN; ihl <= MVPP2_PRS_IPV4_IHL_MAX; ihl++) {
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID,
MVPP2_PE_LAST_FREE_TID);
if (tid < 0)
return tid;
memset(&pe, 0, sizeof(pe));
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_L2);
pe.index = tid;
mvpp2_prs_match_etype(&pe, 0, ETH_P_IP);
mvpp2_prs_tcam_data_byte_set(&pe, MVPP2_ETH_TYPE_LEN,
MVPP2_PRS_IPV4_HEAD | ihl,
MVPP2_PRS_IPV4_HEAD_MASK |
MVPP2_PRS_IPV4_IHL_MASK);
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_IP4);
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_IP4,
MVPP2_PRS_RI_L3_PROTO_MASK);
/* goto ipv4 dst-address (skip eth_type + IP-header-size - 4) */
mvpp2_prs_sram_shift_set(&pe, MVPP2_ETH_TYPE_LEN +
sizeof(struct iphdr) - 4,
MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
/* Set L4 offset */
mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L4,
MVPP2_ETH_TYPE_LEN + (ihl * 4),
MVPP2_PRS_SRAM_OP_SEL_UDF_ADD);
/* Update shadow table and hw entry */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_L2);
priv->prs_shadow[pe.index].udf = MVPP2_PRS_UDF_L2_DEF;
priv->prs_shadow[pe.index].finish = false;
mvpp2_prs_shadow_ri_set(priv, pe.index, MVPP2_PRS_RI_L3_IP4,
MVPP2_PRS_RI_L3_PROTO_MASK);
mvpp2_prs_hw_write(priv, &pe);
}
/* Ethertype: IPv6 without options */
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID,
MVPP2_PE_LAST_FREE_TID);
if (tid < 0)
return tid;
memset(&pe, 0, sizeof(pe));
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_L2);
pe.index = tid;
mvpp2_prs_match_etype(&pe, 0, ETH_P_IPV6);
/* Skip DIP of IPV6 header */
mvpp2_prs_sram_shift_set(&pe, MVPP2_ETH_TYPE_LEN + 8 +
MVPP2_MAX_L3_ADDR_SIZE,
MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_IP6);
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_IP6,
MVPP2_PRS_RI_L3_PROTO_MASK);
/* Set L3 offset */
mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L3,
MVPP2_ETH_TYPE_LEN,
MVPP2_PRS_SRAM_OP_SEL_UDF_ADD);
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_L2);
priv->prs_shadow[pe.index].udf = MVPP2_PRS_UDF_L2_DEF;
priv->prs_shadow[pe.index].finish = false;
mvpp2_prs_shadow_ri_set(priv, pe.index, MVPP2_PRS_RI_L3_IP6,
MVPP2_PRS_RI_L3_PROTO_MASK);
mvpp2_prs_hw_write(priv, &pe);
/* Default entry for MVPP2_PRS_LU_L2 - Unknown ethtype */
memset(&pe, 0, sizeof(struct mvpp2_prs_entry));
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_L2);
pe.index = MVPP2_PE_ETH_TYPE_UN;
/* Unmask all ports */
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
/* Generate flow in the next iteration*/
mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1);
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS);
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_UN,
MVPP2_PRS_RI_L3_PROTO_MASK);
/* Set L3 offset even it's unknown L3 */
mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L3,
MVPP2_ETH_TYPE_LEN,
MVPP2_PRS_SRAM_OP_SEL_UDF_ADD);
/* Update shadow table and hw entry */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_L2);
priv->prs_shadow[pe.index].udf = MVPP2_PRS_UDF_L2_DEF;
priv->prs_shadow[pe.index].finish = true;
mvpp2_prs_shadow_ri_set(priv, pe.index, MVPP2_PRS_RI_L3_UN,
MVPP2_PRS_RI_L3_PROTO_MASK);
mvpp2_prs_hw_write(priv, &pe);
return 0;
}
/* Configure vlan entries and detect up to 2 successive VLAN tags.
* Possible options:
* 0x8100, 0x88A8
* 0x8100, 0x8100
* 0x8100
* 0x88A8
*/
static int mvpp2_prs_vlan_init(struct platform_device *pdev, struct mvpp2 *priv)
{
struct mvpp2_prs_entry pe;
int err;
priv->prs_double_vlans = devm_kcalloc(&pdev->dev, sizeof(bool),
MVPP2_PRS_DBL_VLANS_MAX,
GFP_KERNEL);
if (!priv->prs_double_vlans)
return -ENOMEM;
/* Double VLAN: 0x88A8, 0x8100 */
err = mvpp2_prs_double_vlan_add(priv, ETH_P_8021AD, ETH_P_8021Q,
MVPP2_PRS_PORT_MASK);
if (err)
return err;
/* Double VLAN: 0x8100, 0x8100 */
err = mvpp2_prs_double_vlan_add(priv, ETH_P_8021Q, ETH_P_8021Q,
MVPP2_PRS_PORT_MASK);
if (err)
return err;
/* Single VLAN: 0x88a8 */
err = mvpp2_prs_vlan_add(priv, ETH_P_8021AD, MVPP2_PRS_SINGLE_VLAN_AI,
MVPP2_PRS_PORT_MASK);
if (err)
return err;
/* Single VLAN: 0x8100 */
err = mvpp2_prs_vlan_add(priv, ETH_P_8021Q, MVPP2_PRS_SINGLE_VLAN_AI,
MVPP2_PRS_PORT_MASK);
if (err)
return err;
/* Set default double vlan entry */
memset(&pe, 0, sizeof(pe));
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_VLAN);
pe.index = MVPP2_PE_VLAN_DBL;
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_VID);
/* Clear ai for next iterations */
mvpp2_prs_sram_ai_update(&pe, 0, MVPP2_PRS_SRAM_AI_MASK);
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_VLAN_DOUBLE,
MVPP2_PRS_RI_VLAN_MASK);
mvpp2_prs_tcam_ai_update(&pe, MVPP2_PRS_DBL_VLAN_AI_BIT,
MVPP2_PRS_DBL_VLAN_AI_BIT);
/* Unmask all ports */
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
/* Update shadow table and hw entry */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_VLAN);
mvpp2_prs_hw_write(priv, &pe);
/* Set default vlan none entry */
memset(&pe, 0, sizeof(pe));
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_VLAN);
pe.index = MVPP2_PE_VLAN_NONE;
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_L2);
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_VLAN_NONE,
MVPP2_PRS_RI_VLAN_MASK);
/* Unmask all ports */
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
/* Update shadow table and hw entry */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_VLAN);
mvpp2_prs_hw_write(priv, &pe);
return 0;
}
/* Set entries for PPPoE ethertype */
static int mvpp2_prs_pppoe_init(struct mvpp2 *priv)
{
struct mvpp2_prs_entry pe;
int tid, ihl;
/* IPv4 over PPPoE with header length >= 5 */
for (ihl = MVPP2_PRS_IPV4_IHL_MIN; ihl <= MVPP2_PRS_IPV4_IHL_MAX; ihl++) {
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID,
MVPP2_PE_LAST_FREE_TID);
if (tid < 0)
return tid;
memset(&pe, 0, sizeof(pe));
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_PPPOE);
pe.index = tid;
mvpp2_prs_match_etype(&pe, 0, PPP_IP);
mvpp2_prs_tcam_data_byte_set(&pe, MVPP2_ETH_TYPE_LEN,
MVPP2_PRS_IPV4_HEAD | ihl,
MVPP2_PRS_IPV4_HEAD_MASK |
MVPP2_PRS_IPV4_IHL_MASK);
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_IP4);
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_IP4,
MVPP2_PRS_RI_L3_PROTO_MASK);
/* goto ipv4 dst-address (skip eth_type + IP-header-size - 4) */
mvpp2_prs_sram_shift_set(&pe, MVPP2_ETH_TYPE_LEN +
sizeof(struct iphdr) - 4,
MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
/* Set L3 offset */
mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L3,
MVPP2_ETH_TYPE_LEN,
MVPP2_PRS_SRAM_OP_SEL_UDF_ADD);
/* Set L4 offset */
mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L4,
MVPP2_ETH_TYPE_LEN + (ihl * 4),
MVPP2_PRS_SRAM_OP_SEL_UDF_ADD);
/* Update shadow table and hw entry */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_PPPOE);
mvpp2_prs_hw_write(priv, &pe);
}
/* IPv6 over PPPoE */
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID,
MVPP2_PE_LAST_FREE_TID);
if (tid < 0)
return tid;
memset(&pe, 0, sizeof(pe));
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_PPPOE);
pe.index = tid;
mvpp2_prs_match_etype(&pe, 0, PPP_IPV6);
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_IP6);
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_IP6,
MVPP2_PRS_RI_L3_PROTO_MASK);
/* Jump to DIP of IPV6 header */
mvpp2_prs_sram_shift_set(&pe, MVPP2_ETH_TYPE_LEN + 8 +
MVPP2_MAX_L3_ADDR_SIZE,
MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
/* Set L3 offset */
mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L3,
MVPP2_ETH_TYPE_LEN,
MVPP2_PRS_SRAM_OP_SEL_UDF_ADD);
/* Update shadow table and hw entry */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_PPPOE);
mvpp2_prs_hw_write(priv, &pe);
/* Non-IP over PPPoE */
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID,
MVPP2_PE_LAST_FREE_TID);
if (tid < 0)
return tid;
memset(&pe, 0, sizeof(pe));
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_PPPOE);
pe.index = tid;
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_UN,
MVPP2_PRS_RI_L3_PROTO_MASK);
/* Finished: go to flowid generation */
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS);
mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1);
/* Set L3 offset even if it's unknown L3 */
mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L3,
MVPP2_ETH_TYPE_LEN,
MVPP2_PRS_SRAM_OP_SEL_UDF_ADD);
/* Update shadow table and hw entry */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_PPPOE);
mvpp2_prs_hw_write(priv, &pe);
return 0;
}
/* Initialize entries for IPv4 */
static int mvpp2_prs_ip4_init(struct mvpp2 *priv)
{
struct mvpp2_prs_entry pe;
int err;
/* Set entries for TCP, UDP and IGMP over IPv4 */
err = mvpp2_prs_ip4_proto(priv, IPPROTO_TCP, MVPP2_PRS_RI_L4_TCP,
MVPP2_PRS_RI_L4_PROTO_MASK);
if (err)
return err;
err = mvpp2_prs_ip4_proto(priv, IPPROTO_UDP, MVPP2_PRS_RI_L4_UDP,
MVPP2_PRS_RI_L4_PROTO_MASK);
if (err)
return err;
err = mvpp2_prs_ip4_proto(priv, IPPROTO_IGMP,
MVPP2_PRS_RI_CPU_CODE_RX_SPEC |
MVPP2_PRS_RI_UDF3_RX_SPECIAL,
MVPP2_PRS_RI_CPU_CODE_MASK |
MVPP2_PRS_RI_UDF3_MASK);
if (err)
return err;
/* IPv4 Broadcast */
err = mvpp2_prs_ip4_cast(priv, MVPP2_PRS_L3_BROAD_CAST);
if (err)
return err;
/* IPv4 Multicast */
err = mvpp2_prs_ip4_cast(priv, MVPP2_PRS_L3_MULTI_CAST);
if (err)
return err;
/* Default IPv4 entry for unknown protocols */
memset(&pe, 0, sizeof(pe));
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_IP4);
pe.index = MVPP2_PE_IP4_PROTO_UN;
/* Finished: go to flowid generation */
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS);
mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1);
/* Set L3 offset */
mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L3, -4,
MVPP2_PRS_SRAM_OP_SEL_UDF_ADD);
mvpp2_prs_sram_ai_update(&pe, 0, MVPP2_PRS_IPV4_DIP_AI_BIT);
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L4_OTHER,
MVPP2_PRS_RI_L4_PROTO_MASK);
mvpp2_prs_tcam_ai_update(&pe, MVPP2_PRS_IPV4_DIP_AI_BIT,
MVPP2_PRS_IPV4_DIP_AI_BIT);
/* Unmask all ports */
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
/* Update shadow table and hw entry */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_IP4);
mvpp2_prs_hw_write(priv, &pe);
/* Default IPv4 entry for unicast address */
memset(&pe, 0, sizeof(pe));
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_IP4);
pe.index = MVPP2_PE_IP4_ADDR_UN;
/* Go again to ipv4 */
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_IP4);
mvpp2_prs_sram_ai_update(&pe, MVPP2_PRS_IPV4_DIP_AI_BIT,
MVPP2_PRS_IPV4_DIP_AI_BIT);
/* Shift back to IPv4 proto */
mvpp2_prs_sram_shift_set(&pe, -12, MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_UCAST,
MVPP2_PRS_RI_L3_ADDR_MASK);
mvpp2_prs_tcam_ai_update(&pe, 0, MVPP2_PRS_IPV4_DIP_AI_BIT);
/* Unmask all ports */
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
/* Update shadow table and hw entry */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_IP4);
mvpp2_prs_hw_write(priv, &pe);
return 0;
}
/* Initialize entries for IPv6 */
static int mvpp2_prs_ip6_init(struct mvpp2 *priv)
{
struct mvpp2_prs_entry pe;
int tid, err;
/* Set entries for TCP, UDP and ICMP over IPv6 */
err = mvpp2_prs_ip6_proto(priv, IPPROTO_TCP,
MVPP2_PRS_RI_L4_TCP,
MVPP2_PRS_RI_L4_PROTO_MASK);
if (err)
return err;
err = mvpp2_prs_ip6_proto(priv, IPPROTO_UDP,
MVPP2_PRS_RI_L4_UDP,
MVPP2_PRS_RI_L4_PROTO_MASK);
if (err)
return err;
err = mvpp2_prs_ip6_proto(priv, IPPROTO_ICMPV6,
MVPP2_PRS_RI_CPU_CODE_RX_SPEC |
MVPP2_PRS_RI_UDF3_RX_SPECIAL,
MVPP2_PRS_RI_CPU_CODE_MASK |
MVPP2_PRS_RI_UDF3_MASK);
if (err)
return err;
/* IPv4 is the last header. This is similar case as 6-TCP or 17-UDP */
/* Result Info: UDF7=1, DS lite */
err = mvpp2_prs_ip6_proto(priv, IPPROTO_IPIP,
MVPP2_PRS_RI_UDF7_IP6_LITE,
MVPP2_PRS_RI_UDF7_MASK);
if (err)
return err;
/* IPv6 multicast */
err = mvpp2_prs_ip6_cast(priv, MVPP2_PRS_L3_MULTI_CAST);
if (err)
return err;
/* Entry for checking hop limit */
tid = mvpp2_prs_tcam_first_free(priv, MVPP2_PE_FIRST_FREE_TID,
MVPP2_PE_LAST_FREE_TID);
if (tid < 0)
return tid;
memset(&pe, 0, sizeof(pe));
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_IP6);
pe.index = tid;
/* Finished: go to flowid generation */
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS);
mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1);
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_UN |
MVPP2_PRS_RI_DROP_MASK,
MVPP2_PRS_RI_L3_PROTO_MASK |
MVPP2_PRS_RI_DROP_MASK);
mvpp2_prs_tcam_data_byte_set(&pe, 1, 0x00, MVPP2_PRS_IPV6_HOP_MASK);
mvpp2_prs_tcam_ai_update(&pe, MVPP2_PRS_IPV6_NO_EXT_AI_BIT,
MVPP2_PRS_IPV6_NO_EXT_AI_BIT);
/* Update shadow table and hw entry */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_IP4);
mvpp2_prs_hw_write(priv, &pe);
/* Default IPv6 entry for unknown protocols */
memset(&pe, 0, sizeof(pe));
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_IP6);
pe.index = MVPP2_PE_IP6_PROTO_UN;
/* Finished: go to flowid generation */
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS);
mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1);
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L4_OTHER,
MVPP2_PRS_RI_L4_PROTO_MASK);
/* Set L4 offset relatively to our current place */
mvpp2_prs_sram_offset_set(&pe, MVPP2_PRS_SRAM_UDF_TYPE_L4,
sizeof(struct ipv6hdr) - 4,
MVPP2_PRS_SRAM_OP_SEL_UDF_ADD);
mvpp2_prs_tcam_ai_update(&pe, MVPP2_PRS_IPV6_NO_EXT_AI_BIT,
MVPP2_PRS_IPV6_NO_EXT_AI_BIT);
/* Unmask all ports */
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
/* Update shadow table and hw entry */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_IP4);
mvpp2_prs_hw_write(priv, &pe);
/* Default IPv6 entry for unknown ext protocols */
memset(&pe, 0, sizeof(struct mvpp2_prs_entry));
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_IP6);
pe.index = MVPP2_PE_IP6_EXT_PROTO_UN;
/* Finished: go to flowid generation */
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS);
mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1);
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L4_OTHER,
MVPP2_PRS_RI_L4_PROTO_MASK);
mvpp2_prs_tcam_ai_update(&pe, MVPP2_PRS_IPV6_EXT_AI_BIT,
MVPP2_PRS_IPV6_EXT_AI_BIT);
/* Unmask all ports */
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
/* Update shadow table and hw entry */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_IP4);
mvpp2_prs_hw_write(priv, &pe);
/* Default IPv6 entry for unicast address */
memset(&pe, 0, sizeof(struct mvpp2_prs_entry));
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_IP6);
pe.index = MVPP2_PE_IP6_ADDR_UN;
/* Finished: go to IPv6 again */
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_IP6);
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_L3_UCAST,
MVPP2_PRS_RI_L3_ADDR_MASK);
mvpp2_prs_sram_ai_update(&pe, MVPP2_PRS_IPV6_NO_EXT_AI_BIT,
MVPP2_PRS_IPV6_NO_EXT_AI_BIT);
/* Shift back to IPV6 NH */
mvpp2_prs_sram_shift_set(&pe, -18, MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
mvpp2_prs_tcam_ai_update(&pe, 0, MVPP2_PRS_IPV6_NO_EXT_AI_BIT);
/* Unmask all ports */
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
/* Update shadow table and hw entry */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_IP6);
mvpp2_prs_hw_write(priv, &pe);
return 0;
}
/* Find tcam entry with matched pair <vid,port> */
static int mvpp2_prs_vid_range_find(struct mvpp2_port *port, u16 vid, u16 mask)
{
unsigned char byte[2], enable[2];
struct mvpp2_prs_entry pe;
u16 rvid, rmask;
int tid;
/* Go through the all entries with MVPP2_PRS_LU_VID */
for (tid = MVPP2_PRS_VID_PORT_FIRST(port->id);
tid <= MVPP2_PRS_VID_PORT_LAST(port->id); tid++) {
if (!port->priv->prs_shadow[tid].valid ||
port->priv->prs_shadow[tid].lu != MVPP2_PRS_LU_VID)
continue;
mvpp2_prs_init_from_hw(port->priv, &pe, tid);
mvpp2_prs_tcam_data_byte_get(&pe, 2, &byte[0], &enable[0]);
mvpp2_prs_tcam_data_byte_get(&pe, 3, &byte[1], &enable[1]);
rvid = ((byte[0] & 0xf) << 8) + byte[1];
rmask = ((enable[0] & 0xf) << 8) + enable[1];
if (rvid != vid || rmask != mask)
continue;
return tid;
}
return -ENOENT;
}
/* Write parser entry for VID filtering */
int mvpp2_prs_vid_entry_add(struct mvpp2_port *port, u16 vid)
{
unsigned int vid_start = MVPP2_PE_VID_FILT_RANGE_START +
port->id * MVPP2_PRS_VLAN_FILT_MAX;
unsigned int mask = 0xfff, reg_val, shift;
struct mvpp2 *priv = port->priv;
struct mvpp2_prs_entry pe;
int tid;
memset(&pe, 0, sizeof(pe));
/* Scan TCAM and see if entry with this <vid,port> already exist */
tid = mvpp2_prs_vid_range_find(port, vid, mask);
reg_val = mvpp2_read(priv, MVPP2_MH_REG(port->id));
if (reg_val & MVPP2_DSA_EXTENDED)
shift = MVPP2_VLAN_TAG_EDSA_LEN;
else
shift = MVPP2_VLAN_TAG_LEN;
/* No such entry */
if (tid < 0) {
/* Go through all entries from first to last in vlan range */
tid = mvpp2_prs_tcam_first_free(priv, vid_start,
vid_start +
MVPP2_PRS_VLAN_FILT_MAX_ENTRY);
/* There isn't room for a new VID filter */
if (tid < 0)
return tid;
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_VID);
pe.index = tid;
/* Mask all ports */
mvpp2_prs_tcam_port_map_set(&pe, 0);
} else {
mvpp2_prs_init_from_hw(priv, &pe, tid);
}
/* Enable the current port */
mvpp2_prs_tcam_port_set(&pe, port->id, true);
/* Continue - set next lookup */
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_L2);
/* Skip VLAN header - Set offset to 4 or 8 bytes */
mvpp2_prs_sram_shift_set(&pe, shift, MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
/* Set match on VID */
mvpp2_prs_match_vid(&pe, MVPP2_PRS_VID_TCAM_BYTE, vid);
/* Clear all ai bits for next iteration */
mvpp2_prs_sram_ai_update(&pe, 0, MVPP2_PRS_SRAM_AI_MASK);
/* Update shadow table */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_VID);
mvpp2_prs_hw_write(priv, &pe);
return 0;
}
/* Write parser entry for VID filtering */
void mvpp2_prs_vid_entry_remove(struct mvpp2_port *port, u16 vid)
{
struct mvpp2 *priv = port->priv;
int tid;
/* Scan TCAM and see if entry with this <vid,port> already exist */
tid = mvpp2_prs_vid_range_find(port, vid, 0xfff);
/* No such entry */
if (tid < 0)
return;
mvpp2_prs_hw_inv(priv, tid);
priv->prs_shadow[tid].valid = false;
}
/* Remove all existing VID filters on this port */
void mvpp2_prs_vid_remove_all(struct mvpp2_port *port)
{
struct mvpp2 *priv = port->priv;
int tid;
for (tid = MVPP2_PRS_VID_PORT_FIRST(port->id);
tid <= MVPP2_PRS_VID_PORT_LAST(port->id); tid++) {
if (priv->prs_shadow[tid].valid) {
mvpp2_prs_hw_inv(priv, tid);
priv->prs_shadow[tid].valid = false;
}
}
}
/* Remove VID filering entry for this port */
void mvpp2_prs_vid_disable_filtering(struct mvpp2_port *port)
{
unsigned int tid = MVPP2_PRS_VID_PORT_DFLT(port->id);
struct mvpp2 *priv = port->priv;
/* Invalidate the guard entry */
mvpp2_prs_hw_inv(priv, tid);
priv->prs_shadow[tid].valid = false;
}
/* Add guard entry that drops packets when no VID is matched on this port */
void mvpp2_prs_vid_enable_filtering(struct mvpp2_port *port)
{
unsigned int tid = MVPP2_PRS_VID_PORT_DFLT(port->id);
struct mvpp2 *priv = port->priv;
unsigned int reg_val, shift;
struct mvpp2_prs_entry pe;
if (priv->prs_shadow[tid].valid)
return;
memset(&pe, 0, sizeof(pe));
pe.index = tid;
reg_val = mvpp2_read(priv, MVPP2_MH_REG(port->id));
if (reg_val & MVPP2_DSA_EXTENDED)
shift = MVPP2_VLAN_TAG_EDSA_LEN;
else
shift = MVPP2_VLAN_TAG_LEN;
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_VID);
/* Mask all ports */
mvpp2_prs_tcam_port_map_set(&pe, 0);
/* Update port mask */
mvpp2_prs_tcam_port_set(&pe, port->id, true);
/* Continue - set next lookup */
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_L2);
/* Skip VLAN header - Set offset to 4 or 8 bytes */
mvpp2_prs_sram_shift_set(&pe, shift, MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
/* Drop VLAN packets that don't belong to any VIDs on this port */
mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_DROP_MASK,
MVPP2_PRS_RI_DROP_MASK);
/* Clear all ai bits for next iteration */
mvpp2_prs_sram_ai_update(&pe, 0, MVPP2_PRS_SRAM_AI_MASK);
/* Update shadow table */
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_VID);
mvpp2_prs_hw_write(priv, &pe);
}
/* Parser default initialization */
int mvpp2_prs_default_init(struct platform_device *pdev, struct mvpp2 *priv)
{
int err, index, i;
/* Enable tcam table */
mvpp2_write(priv, MVPP2_PRS_TCAM_CTRL_REG, MVPP2_PRS_TCAM_EN_MASK);
/* Clear all tcam and sram entries */
for (index = 0; index < MVPP2_PRS_TCAM_SRAM_SIZE; index++) {
mvpp2_write(priv, MVPP2_PRS_TCAM_IDX_REG, index);
for (i = 0; i < MVPP2_PRS_TCAM_WORDS; i++)
mvpp2_write(priv, MVPP2_PRS_TCAM_DATA_REG(i), 0);
mvpp2_write(priv, MVPP2_PRS_SRAM_IDX_REG, index);
for (i = 0; i < MVPP2_PRS_SRAM_WORDS; i++)
mvpp2_write(priv, MVPP2_PRS_SRAM_DATA_REG(i), 0);
}
/* Invalidate all tcam entries */
for (index = 0; index < MVPP2_PRS_TCAM_SRAM_SIZE; index++)
mvpp2_prs_hw_inv(priv, index);
priv->prs_shadow = devm_kcalloc(&pdev->dev, MVPP2_PRS_TCAM_SRAM_SIZE,
sizeof(*priv->prs_shadow),
GFP_KERNEL);
if (!priv->prs_shadow)
return -ENOMEM;
/* Always start from lookup = 0 */
for (index = 0; index < MVPP2_MAX_PORTS; index++)
mvpp2_prs_hw_port_init(priv, index, MVPP2_PRS_LU_MH,
MVPP2_PRS_PORT_LU_MAX, 0);
mvpp2_prs_def_flow_init(priv);
mvpp2_prs_mh_init(priv);
mvpp2_prs_mac_init(priv);
mvpp2_prs_dsa_init(priv);
mvpp2_prs_vid_init(priv);
err = mvpp2_prs_etype_init(priv);
if (err)
return err;
err = mvpp2_prs_vlan_init(pdev, priv);
if (err)
return err;
err = mvpp2_prs_pppoe_init(priv);
if (err)
return err;
err = mvpp2_prs_ip6_init(priv);
if (err)
return err;
err = mvpp2_prs_ip4_init(priv);
if (err)
return err;
return 0;
}
/* Compare MAC DA with tcam entry data */
static bool mvpp2_prs_mac_range_equals(struct mvpp2_prs_entry *pe,
const u8 *da, unsigned char *mask)
{
unsigned char tcam_byte, tcam_mask;
int index;
for (index = 0; index < ETH_ALEN; index++) {
mvpp2_prs_tcam_data_byte_get(pe, index, &tcam_byte, &tcam_mask);
if (tcam_mask != mask[index])
return false;
if ((tcam_mask & tcam_byte) != (da[index] & mask[index]))
return false;
}
return true;
}
/* Find tcam entry with matched pair <MAC DA, port> */
static int
mvpp2_prs_mac_da_range_find(struct mvpp2 *priv, int pmap, const u8 *da,
unsigned char *mask, int udf_type)
{
struct mvpp2_prs_entry pe;
int tid;
/* Go through the all entires with MVPP2_PRS_LU_MAC */
for (tid = MVPP2_PE_MAC_RANGE_START;
tid <= MVPP2_PE_MAC_RANGE_END; tid++) {
unsigned int entry_pmap;
if (!priv->prs_shadow[tid].valid ||
(priv->prs_shadow[tid].lu != MVPP2_PRS_LU_MAC) ||
(priv->prs_shadow[tid].udf != udf_type))
continue;
mvpp2_prs_init_from_hw(priv, &pe, tid);
entry_pmap = mvpp2_prs_tcam_port_map_get(&pe);
if (mvpp2_prs_mac_range_equals(&pe, da, mask) &&
entry_pmap == pmap)
return tid;
}
return -ENOENT;
}
/* Update parser's mac da entry */
int mvpp2_prs_mac_da_accept(struct mvpp2_port *port, const u8 *da, bool add)
{
unsigned char mask[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
struct mvpp2 *priv = port->priv;
unsigned int pmap, len, ri;
struct mvpp2_prs_entry pe;
int tid;
memset(&pe, 0, sizeof(pe));
/* Scan TCAM and see if entry with this <MAC DA, port> already exist */
tid = mvpp2_prs_mac_da_range_find(priv, BIT(port->id), da, mask,
MVPP2_PRS_UDF_MAC_DEF);
/* No such entry */
if (tid < 0) {
if (!add)
return 0;
/* Create new TCAM entry */
/* Go through the all entries from first to last */
tid = mvpp2_prs_tcam_first_free(priv,
MVPP2_PE_MAC_RANGE_START,
MVPP2_PE_MAC_RANGE_END);
if (tid < 0)
return tid;
pe.index = tid;
/* Mask all ports */
mvpp2_prs_tcam_port_map_set(&pe, 0);
} else {
mvpp2_prs_init_from_hw(priv, &pe, tid);
}
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_MAC);
/* Update port mask */
mvpp2_prs_tcam_port_set(&pe, port->id, add);
/* Invalidate the entry if no ports are left enabled */
pmap = mvpp2_prs_tcam_port_map_get(&pe);
if (pmap == 0) {
if (add)
return -EINVAL;
mvpp2_prs_hw_inv(priv, pe.index);
priv->prs_shadow[pe.index].valid = false;
return 0;
}
/* Continue - set next lookup */
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_DSA);
/* Set match on DA */
len = ETH_ALEN;
while (len--)
mvpp2_prs_tcam_data_byte_set(&pe, len, da[len], 0xff);
/* Set result info bits */
if (is_broadcast_ether_addr(da)) {
ri = MVPP2_PRS_RI_L2_BCAST;
} else if (is_multicast_ether_addr(da)) {
ri = MVPP2_PRS_RI_L2_MCAST;
} else {
ri = MVPP2_PRS_RI_L2_UCAST;
if (ether_addr_equal(da, port->dev->dev_addr))
ri |= MVPP2_PRS_RI_MAC_ME_MASK;
}
mvpp2_prs_sram_ri_update(&pe, ri, MVPP2_PRS_RI_L2_CAST_MASK |
MVPP2_PRS_RI_MAC_ME_MASK);
mvpp2_prs_shadow_ri_set(priv, pe.index, ri, MVPP2_PRS_RI_L2_CAST_MASK |
MVPP2_PRS_RI_MAC_ME_MASK);
/* Shift to ethertype */
mvpp2_prs_sram_shift_set(&pe, 2 * ETH_ALEN,
MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
/* Update shadow table and hw entry */
priv->prs_shadow[pe.index].udf = MVPP2_PRS_UDF_MAC_DEF;
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_MAC);
mvpp2_prs_hw_write(priv, &pe);
return 0;
}
int mvpp2_prs_update_mac_da(struct net_device *dev, const u8 *da)
{
struct mvpp2_port *port = netdev_priv(dev);
int err;
/* Remove old parser entry */
err = mvpp2_prs_mac_da_accept(port, dev->dev_addr, false);
if (err)
return err;
/* Add new parser entry */
err = mvpp2_prs_mac_da_accept(port, da, true);
if (err)
return err;
/* Set addr in the device */
eth_hw_addr_set(dev, da);
return 0;
}
void mvpp2_prs_mac_del_all(struct mvpp2_port *port)
{
struct mvpp2 *priv = port->priv;
struct mvpp2_prs_entry pe;
unsigned long pmap;
int index, tid;
for (tid = MVPP2_PE_MAC_RANGE_START;
tid <= MVPP2_PE_MAC_RANGE_END; tid++) {
unsigned char da[ETH_ALEN], da_mask[ETH_ALEN];
if (!priv->prs_shadow[tid].valid ||
(priv->prs_shadow[tid].lu != MVPP2_PRS_LU_MAC) ||
(priv->prs_shadow[tid].udf != MVPP2_PRS_UDF_MAC_DEF))
continue;
mvpp2_prs_init_from_hw(priv, &pe, tid);
pmap = mvpp2_prs_tcam_port_map_get(&pe);
/* We only want entries active on this port */
if (!test_bit(port->id, &pmap))
continue;
/* Read mac addr from entry */
for (index = 0; index < ETH_ALEN; index++)
mvpp2_prs_tcam_data_byte_get(&pe, index, &da[index],
&da_mask[index]);
/* Special cases : Don't remove broadcast and port's own
* address
*/
if (is_broadcast_ether_addr(da) ||
ether_addr_equal(da, port->dev->dev_addr))
continue;
/* Remove entry from TCAM */
mvpp2_prs_mac_da_accept(port, da, false);
}
}
int mvpp2_prs_tag_mode_set(struct mvpp2 *priv, int port, int type)
{
switch (type) {
case MVPP2_TAG_TYPE_EDSA:
/* Add port to EDSA entries */
mvpp2_prs_dsa_tag_set(priv, port, true,
MVPP2_PRS_TAGGED, MVPP2_PRS_EDSA);
mvpp2_prs_dsa_tag_set(priv, port, true,
MVPP2_PRS_UNTAGGED, MVPP2_PRS_EDSA);
/* Remove port from DSA entries */
mvpp2_prs_dsa_tag_set(priv, port, false,
MVPP2_PRS_TAGGED, MVPP2_PRS_DSA);
mvpp2_prs_dsa_tag_set(priv, port, false,
MVPP2_PRS_UNTAGGED, MVPP2_PRS_DSA);
break;
case MVPP2_TAG_TYPE_DSA:
/* Add port to DSA entries */
mvpp2_prs_dsa_tag_set(priv, port, true,
MVPP2_PRS_TAGGED, MVPP2_PRS_DSA);
mvpp2_prs_dsa_tag_set(priv, port, true,
MVPP2_PRS_UNTAGGED, MVPP2_PRS_DSA);
/* Remove port from EDSA entries */
mvpp2_prs_dsa_tag_set(priv, port, false,
MVPP2_PRS_TAGGED, MVPP2_PRS_EDSA);
mvpp2_prs_dsa_tag_set(priv, port, false,
MVPP2_PRS_UNTAGGED, MVPP2_PRS_EDSA);
break;
case MVPP2_TAG_TYPE_MH:
case MVPP2_TAG_TYPE_NONE:
/* Remove port form EDSA and DSA entries */
mvpp2_prs_dsa_tag_set(priv, port, false,
MVPP2_PRS_TAGGED, MVPP2_PRS_DSA);
mvpp2_prs_dsa_tag_set(priv, port, false,
MVPP2_PRS_UNTAGGED, MVPP2_PRS_DSA);
mvpp2_prs_dsa_tag_set(priv, port, false,
MVPP2_PRS_TAGGED, MVPP2_PRS_EDSA);
mvpp2_prs_dsa_tag_set(priv, port, false,
MVPP2_PRS_UNTAGGED, MVPP2_PRS_EDSA);
break;
default:
if ((type < 0) || (type > MVPP2_TAG_TYPE_EDSA))
return -EINVAL;
}
return 0;
}
int mvpp2_prs_add_flow(struct mvpp2 *priv, int flow, u32 ri, u32 ri_mask)
{
struct mvpp2_prs_entry pe;
u8 *ri_byte, *ri_byte_mask;
int tid, i;
memset(&pe, 0, sizeof(pe));
tid = mvpp2_prs_tcam_first_free(priv,
MVPP2_PE_LAST_FREE_TID,
MVPP2_PE_FIRST_FREE_TID);
if (tid < 0)
return tid;
pe.index = tid;
ri_byte = (u8 *)&ri;
ri_byte_mask = (u8 *)&ri_mask;
mvpp2_prs_sram_ai_update(&pe, flow, MVPP2_PRS_FLOW_ID_MASK);
mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_DONE_BIT, 1);
for (i = 0; i < 4; i++) {
mvpp2_prs_tcam_data_byte_set(&pe, i, ri_byte[i],
ri_byte_mask[i]);
}
mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_FLOWS);
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_FLOWS);
mvpp2_prs_tcam_port_map_set(&pe, MVPP2_PRS_PORT_MASK);
mvpp2_prs_hw_write(priv, &pe);
return 0;
}
/* Set prs flow for the port */
int mvpp2_prs_def_flow(struct mvpp2_port *port)
{
struct mvpp2_prs_entry pe;
int tid;
memset(&pe, 0, sizeof(pe));
tid = mvpp2_prs_flow_find(port->priv, port->id);
/* Such entry not exist */
if (tid < 0) {
/* Go through the all entires from last to first */
tid = mvpp2_prs_tcam_first_free(port->priv,
MVPP2_PE_LAST_FREE_TID,
MVPP2_PE_FIRST_FREE_TID);
if (tid < 0)
return tid;
pe.index = tid;
/* Set flow ID*/
mvpp2_prs_sram_ai_update(&pe, port->id, MVPP2_PRS_FLOW_ID_MASK);
mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_DONE_BIT, 1);
/* Update shadow table */
mvpp2_prs_shadow_set(port->priv, pe.index, MVPP2_PRS_LU_FLOWS);
} else {
mvpp2_prs_init_from_hw(port->priv, &pe, tid);
}
mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_FLOWS);
mvpp2_prs_tcam_port_map_set(&pe, (1 << port->id));
mvpp2_prs_hw_write(port->priv, &pe);
return 0;
}
int mvpp2_prs_hits(struct mvpp2 *priv, int index)
{
u32 val;
if (index > MVPP2_PRS_TCAM_SRAM_SIZE)
return -EINVAL;
mvpp2_write(priv, MVPP2_PRS_TCAM_HIT_IDX_REG, index);
val = mvpp2_read(priv, MVPP2_PRS_TCAM_HIT_CNT_REG);
val &= MVPP2_PRS_TCAM_HIT_CNT_MASK;
return val;
}