diff options
Diffstat (limited to 'drivers/net/ethernet/microchip/sparx5/sparx5_vcap_impl.c')
| -rw-r--r-- | drivers/net/ethernet/microchip/sparx5/sparx5_vcap_impl.c | 723 |
1 files changed, 723 insertions, 0 deletions
diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_vcap_impl.c b/drivers/net/ethernet/microchip/sparx5/sparx5_vcap_impl.c new file mode 100644 index 000000000000..a0c126ba9a87 --- /dev/null +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_vcap_impl.c @@ -0,0 +1,723 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* Microchip Sparx5 Switch driver VCAP implementation + * + * Copyright (c) 2022 Microchip Technology Inc. and its subsidiaries. + * + * The Sparx5 Chip Register Model can be browsed at this location: + * https://github.com/microchip-ung/sparx-5_reginfo + */ + +#include "vcap_api_debugfs.h" +#include "sparx5_main_regs.h" +#include "sparx5_main.h" +#include "sparx5_vcap_impl.h" +#include "sparx5_vcap_ag_api.h" +#include "sparx5_vcap_debugfs.h" + +#define SUPER_VCAP_BLK_SIZE 3072 /* addresses per Super VCAP block */ +#define STREAMSIZE (64 * 4) /* bytes in the VCAP cache area */ + +#define SPARX5_IS2_LOOKUPS 4 +#define VCAP_IS2_KEYSEL(_ena, _noneth, _v4_mc, _v4_uc, _v6_mc, _v6_uc, _arp) \ + (ANA_ACL_VCAP_S2_KEY_SEL_KEY_SEL_ENA_SET(_ena) | \ + ANA_ACL_VCAP_S2_KEY_SEL_NON_ETH_KEY_SEL_SET(_noneth) | \ + ANA_ACL_VCAP_S2_KEY_SEL_IP4_MC_KEY_SEL_SET(_v4_mc) | \ + ANA_ACL_VCAP_S2_KEY_SEL_IP4_UC_KEY_SEL_SET(_v4_uc) | \ + ANA_ACL_VCAP_S2_KEY_SEL_IP6_MC_KEY_SEL_SET(_v6_mc) | \ + ANA_ACL_VCAP_S2_KEY_SEL_IP6_UC_KEY_SEL_SET(_v6_uc) | \ + ANA_ACL_VCAP_S2_KEY_SEL_ARP_KEY_SEL_SET(_arp)) + +static struct sparx5_vcap_inst { + enum vcap_type vtype; /* type of vcap */ + int vinst; /* instance number within the same type */ + int lookups; /* number of lookups in this vcap type */ + int lookups_per_instance; /* number of lookups in this instance */ + int first_cid; /* first chain id in this vcap */ + int last_cid; /* last chain id in this vcap */ + int count; /* number of available addresses, not in super vcap */ + int map_id; /* id in the super vcap block mapping (if applicable) */ + int blockno; /* starting block in super vcap (if applicable) */ + int blocks; /* number of blocks in super vcap (if applicable) */ +} sparx5_vcap_inst_cfg[] = { + { + .vtype = VCAP_TYPE_IS2, /* IS2-0 */ + .vinst = 0, + .map_id = 4, + .lookups = SPARX5_IS2_LOOKUPS, + .lookups_per_instance = SPARX5_IS2_LOOKUPS / 2, + .first_cid = SPARX5_VCAP_CID_IS2_L0, + .last_cid = SPARX5_VCAP_CID_IS2_L2 - 1, + .blockno = 0, /* Maps block 0-1 */ + .blocks = 2, + }, + { + .vtype = VCAP_TYPE_IS2, /* IS2-1 */ + .vinst = 1, + .map_id = 5, + .lookups = SPARX5_IS2_LOOKUPS, + .lookups_per_instance = SPARX5_IS2_LOOKUPS / 2, + .first_cid = SPARX5_VCAP_CID_IS2_L2, + .last_cid = SPARX5_VCAP_CID_IS2_MAX, + .blockno = 2, /* Maps block 2-3 */ + .blocks = 2, + }, +}; + +/* Await the super VCAP completion of the current operation */ +static void sparx5_vcap_wait_super_update(struct sparx5 *sparx5) +{ + u32 value; + + read_poll_timeout(spx5_rd, value, + !VCAP_SUPER_CTRL_UPDATE_SHOT_GET(value), 500, 10000, + false, sparx5, VCAP_SUPER_CTRL); +} + +/* Initializing a VCAP address range: only IS2 for now */ +static void _sparx5_vcap_range_init(struct sparx5 *sparx5, + struct vcap_admin *admin, + u32 addr, u32 count) +{ + u32 size = count - 1; + + spx5_wr(VCAP_SUPER_CFG_MV_NUM_POS_SET(0) | + VCAP_SUPER_CFG_MV_SIZE_SET(size), + sparx5, VCAP_SUPER_CFG); + spx5_wr(VCAP_SUPER_CTRL_UPDATE_CMD_SET(VCAP_CMD_INITIALIZE) | + VCAP_SUPER_CTRL_UPDATE_ENTRY_DIS_SET(0) | + VCAP_SUPER_CTRL_UPDATE_ACTION_DIS_SET(0) | + VCAP_SUPER_CTRL_UPDATE_CNT_DIS_SET(0) | + VCAP_SUPER_CTRL_UPDATE_ADDR_SET(addr) | + VCAP_SUPER_CTRL_CLEAR_CACHE_SET(true) | + VCAP_SUPER_CTRL_UPDATE_SHOT_SET(true), + sparx5, VCAP_SUPER_CTRL); + sparx5_vcap_wait_super_update(sparx5); +} + +/* Initializing VCAP rule data area */ +static void sparx5_vcap_block_init(struct sparx5 *sparx5, + struct vcap_admin *admin) +{ + _sparx5_vcap_range_init(sparx5, admin, admin->first_valid_addr, + admin->last_valid_addr - + admin->first_valid_addr); +} + +/* Get the keyset name from the sparx5 VCAP model */ +static const char *sparx5_vcap_keyset_name(struct net_device *ndev, + enum vcap_keyfield_set keyset) +{ + struct sparx5_port *port = netdev_priv(ndev); + + return vcap_keyset_name(port->sparx5->vcap_ctrl, keyset); +} + +/* Check if this is the first lookup of IS2 */ +static bool sparx5_vcap_is2_is_first_chain(struct vcap_rule *rule) +{ + return (rule->vcap_chain_id >= SPARX5_VCAP_CID_IS2_L0 && + rule->vcap_chain_id < SPARX5_VCAP_CID_IS2_L1) || + ((rule->vcap_chain_id >= SPARX5_VCAP_CID_IS2_L2 && + rule->vcap_chain_id < SPARX5_VCAP_CID_IS2_L3)); +} + +/* Set the narrow range ingress port mask on a rule */ +static void sparx5_vcap_add_range_port_mask(struct vcap_rule *rule, + struct net_device *ndev) +{ + struct sparx5_port *port = netdev_priv(ndev); + u32 port_mask; + u32 range; + + range = port->portno / BITS_PER_TYPE(u32); + /* Port bit set to match-any */ + port_mask = ~BIT(port->portno % BITS_PER_TYPE(u32)); + vcap_rule_add_key_u32(rule, VCAP_KF_IF_IGR_PORT_MASK_SEL, 0, 0xf); + vcap_rule_add_key_u32(rule, VCAP_KF_IF_IGR_PORT_MASK_RNG, range, 0xf); + vcap_rule_add_key_u32(rule, VCAP_KF_IF_IGR_PORT_MASK, 0, port_mask); +} + +/* Set the wide range ingress port mask on a rule */ +static void sparx5_vcap_add_wide_port_mask(struct vcap_rule *rule, + struct net_device *ndev) +{ + struct sparx5_port *port = netdev_priv(ndev); + struct vcap_u72_key port_mask; + u32 range; + + /* Port bit set to match-any */ + memset(port_mask.value, 0, sizeof(port_mask.value)); + memset(port_mask.mask, 0xff, sizeof(port_mask.mask)); + range = port->portno / BITS_PER_BYTE; + port_mask.mask[range] = ~BIT(port->portno % BITS_PER_BYTE); + vcap_rule_add_key_u72(rule, VCAP_KF_IF_IGR_PORT_MASK, &port_mask); +} + +/* Convert chain id to vcap lookup id */ +static int sparx5_vcap_cid_to_lookup(int cid) +{ + int lookup = 0; + + /* For now only handle IS2 */ + if (cid >= SPARX5_VCAP_CID_IS2_L1 && cid < SPARX5_VCAP_CID_IS2_L2) + lookup = 1; + else if (cid >= SPARX5_VCAP_CID_IS2_L2 && cid < SPARX5_VCAP_CID_IS2_L3) + lookup = 2; + else if (cid >= SPARX5_VCAP_CID_IS2_L3 && cid < SPARX5_VCAP_CID_IS2_MAX) + lookup = 3; + + return lookup; +} + +/* Return the list of keysets for the vcap port configuration */ +static int sparx5_vcap_is2_get_port_keysets(struct net_device *ndev, + int lookup, + struct vcap_keyset_list *keysetlist, + u16 l3_proto) +{ + struct sparx5_port *port = netdev_priv(ndev); + struct sparx5 *sparx5 = port->sparx5; + int portno = port->portno; + u32 value; + + /* Check if the port keyset selection is enabled */ + value = spx5_rd(sparx5, ANA_ACL_VCAP_S2_KEY_SEL(portno, lookup)); + if (!ANA_ACL_VCAP_S2_KEY_SEL_KEY_SEL_ENA_GET(value)) + return -ENOENT; + + /* Collect all keysets for the port in a list */ + if (l3_proto == ETH_P_ALL || l3_proto == ETH_P_ARP) { + switch (ANA_ACL_VCAP_S2_KEY_SEL_ARP_KEY_SEL_GET(value)) { + case VCAP_IS2_PS_ARP_MAC_ETYPE: + vcap_keyset_list_add(keysetlist, VCAP_KFS_MAC_ETYPE); + break; + case VCAP_IS2_PS_ARP_ARP: + vcap_keyset_list_add(keysetlist, VCAP_KFS_ARP); + break; + } + } + + if (l3_proto == ETH_P_ALL || l3_proto == ETH_P_IP) { + switch (ANA_ACL_VCAP_S2_KEY_SEL_IP4_UC_KEY_SEL_GET(value)) { + case VCAP_IS2_PS_IPV4_UC_MAC_ETYPE: + vcap_keyset_list_add(keysetlist, VCAP_KFS_MAC_ETYPE); + break; + case VCAP_IS2_PS_IPV4_UC_IP4_TCP_UDP_OTHER: + vcap_keyset_list_add(keysetlist, VCAP_KFS_IP4_TCP_UDP); + vcap_keyset_list_add(keysetlist, VCAP_KFS_IP4_OTHER); + break; + case VCAP_IS2_PS_IPV4_UC_IP_7TUPLE: + vcap_keyset_list_add(keysetlist, VCAP_KFS_IP_7TUPLE); + break; + } + + switch (ANA_ACL_VCAP_S2_KEY_SEL_IP4_MC_KEY_SEL_GET(value)) { + case VCAP_IS2_PS_IPV4_MC_MAC_ETYPE: + vcap_keyset_list_add(keysetlist, VCAP_KFS_MAC_ETYPE); + break; + case VCAP_IS2_PS_IPV4_MC_IP4_TCP_UDP_OTHER: + vcap_keyset_list_add(keysetlist, VCAP_KFS_IP4_TCP_UDP); + vcap_keyset_list_add(keysetlist, VCAP_KFS_IP4_OTHER); + break; + case VCAP_IS2_PS_IPV4_MC_IP_7TUPLE: + vcap_keyset_list_add(keysetlist, VCAP_KFS_IP_7TUPLE); + break; + } + } + + if (l3_proto == ETH_P_ALL || l3_proto == ETH_P_IPV6) { + switch (ANA_ACL_VCAP_S2_KEY_SEL_IP6_UC_KEY_SEL_GET(value)) { + case VCAP_IS2_PS_IPV6_UC_MAC_ETYPE: + vcap_keyset_list_add(keysetlist, VCAP_KFS_MAC_ETYPE); + break; + case VCAP_IS2_PS_IPV6_UC_IP_7TUPLE: + vcap_keyset_list_add(keysetlist, VCAP_KFS_IP_7TUPLE); + break; + case VCAP_IS2_PS_IPV6_UC_IP6_STD: + vcap_keyset_list_add(keysetlist, VCAP_KFS_IP6_STD); + break; + case VCAP_IS2_PS_IPV6_UC_IP4_TCP_UDP_OTHER: + vcap_keyset_list_add(keysetlist, VCAP_KFS_IP4_TCP_UDP); + vcap_keyset_list_add(keysetlist, VCAP_KFS_IP4_OTHER); + break; + } + + switch (ANA_ACL_VCAP_S2_KEY_SEL_IP6_MC_KEY_SEL_GET(value)) { + case VCAP_IS2_PS_IPV6_MC_MAC_ETYPE: + vcap_keyset_list_add(keysetlist, VCAP_KFS_MAC_ETYPE); + break; + case VCAP_IS2_PS_IPV6_MC_IP_7TUPLE: + vcap_keyset_list_add(keysetlist, VCAP_KFS_IP_7TUPLE); + break; + case VCAP_IS2_PS_IPV6_MC_IP6_STD: + vcap_keyset_list_add(keysetlist, VCAP_KFS_IP6_STD); + break; + case VCAP_IS2_PS_IPV6_MC_IP4_TCP_UDP_OTHER: + vcap_keyset_list_add(keysetlist, VCAP_KFS_IP4_TCP_UDP); + vcap_keyset_list_add(keysetlist, VCAP_KFS_IP4_OTHER); + break; + case VCAP_IS2_PS_IPV6_MC_IP6_VID: + /* Not used */ + break; + } + } + + if (l3_proto != ETH_P_ARP && l3_proto != ETH_P_IP && + l3_proto != ETH_P_IPV6) { + switch (ANA_ACL_VCAP_S2_KEY_SEL_NON_ETH_KEY_SEL_GET(value)) { + case VCAP_IS2_PS_NONETH_MAC_ETYPE: + /* IS2 non-classified frames generate MAC_ETYPE */ + vcap_keyset_list_add(keysetlist, VCAP_KFS_MAC_ETYPE); + break; + } + } + return 0; +} + +/* Get the port keyset for the vcap lookup */ +int sparx5_vcap_get_port_keyset(struct net_device *ndev, + struct vcap_admin *admin, + int cid, + u16 l3_proto, + struct vcap_keyset_list *kslist) +{ + int lookup; + + lookup = sparx5_vcap_cid_to_lookup(cid); + return sparx5_vcap_is2_get_port_keysets(ndev, lookup, kslist, l3_proto); +} + +/* API callback used for validating a field keyset (check the port keysets) */ +static enum vcap_keyfield_set +sparx5_vcap_validate_keyset(struct net_device *ndev, + struct vcap_admin *admin, + struct vcap_rule *rule, + struct vcap_keyset_list *kslist, + u16 l3_proto) +{ + struct vcap_keyset_list keysetlist = {}; + enum vcap_keyfield_set keysets[10] = {}; + int idx, jdx, lookup; + + if (!kslist || kslist->cnt == 0) + return VCAP_KFS_NO_VALUE; + + /* Get a list of currently configured keysets in the lookups */ + lookup = sparx5_vcap_cid_to_lookup(rule->vcap_chain_id); + keysetlist.max = ARRAY_SIZE(keysets); + keysetlist.keysets = keysets; + sparx5_vcap_is2_get_port_keysets(ndev, lookup, &keysetlist, l3_proto); + + /* Check if there is a match and return the match */ + for (idx = 0; idx < kslist->cnt; ++idx) + for (jdx = 0; jdx < keysetlist.cnt; ++jdx) + if (kslist->keysets[idx] == keysets[jdx]) + return kslist->keysets[idx]; + + pr_err("%s:%d: %s not supported in port key selection\n", + __func__, __LINE__, + sparx5_vcap_keyset_name(ndev, kslist->keysets[0])); + + return -ENOENT; +} + +/* API callback used for adding default fields to a rule */ +static void sparx5_vcap_add_default_fields(struct net_device *ndev, + struct vcap_admin *admin, + struct vcap_rule *rule) +{ + const struct vcap_field *field; + + field = vcap_lookup_keyfield(rule, VCAP_KF_IF_IGR_PORT_MASK); + if (field && field->width == SPX5_PORTS) + sparx5_vcap_add_wide_port_mask(rule, ndev); + else if (field && field->width == BITS_PER_TYPE(u32)) + sparx5_vcap_add_range_port_mask(rule, ndev); + else + pr_err("%s:%d: %s: could not add an ingress port mask for: %s\n", + __func__, __LINE__, netdev_name(ndev), + sparx5_vcap_keyset_name(ndev, rule->keyset)); + /* add the lookup bit */ + if (sparx5_vcap_is2_is_first_chain(rule)) + vcap_rule_add_key_bit(rule, VCAP_KF_LOOKUP_FIRST_IS, VCAP_BIT_1); + else + vcap_rule_add_key_bit(rule, VCAP_KF_LOOKUP_FIRST_IS, VCAP_BIT_0); +} + +/* API callback used for erasing the vcap cache area (not the register area) */ +static void sparx5_vcap_cache_erase(struct vcap_admin *admin) +{ + memset(admin->cache.keystream, 0, STREAMSIZE); + memset(admin->cache.maskstream, 0, STREAMSIZE); + memset(admin->cache.actionstream, 0, STREAMSIZE); + memset(&admin->cache.counter, 0, sizeof(admin->cache.counter)); +} + +/* API callback used for writing to the VCAP cache */ +static void sparx5_vcap_cache_write(struct net_device *ndev, + struct vcap_admin *admin, + enum vcap_selection sel, + u32 start, + u32 count) +{ + struct sparx5_port *port = netdev_priv(ndev); + struct sparx5 *sparx5 = port->sparx5; + u32 *keystr, *mskstr, *actstr; + int idx; + + keystr = &admin->cache.keystream[start]; + mskstr = &admin->cache.maskstream[start]; + actstr = &admin->cache.actionstream[start]; + switch (sel) { + case VCAP_SEL_ENTRY: + for (idx = 0; idx < count; ++idx) { + /* Avoid 'match-off' by setting value & mask */ + spx5_wr(keystr[idx] & mskstr[idx], sparx5, + VCAP_SUPER_VCAP_ENTRY_DAT(idx)); + spx5_wr(~mskstr[idx], sparx5, + VCAP_SUPER_VCAP_MASK_DAT(idx)); + } + break; + case VCAP_SEL_ACTION: + for (idx = 0; idx < count; ++idx) + spx5_wr(actstr[idx], sparx5, + VCAP_SUPER_VCAP_ACTION_DAT(idx)); + break; + case VCAP_SEL_ALL: + pr_err("%s:%d: cannot write all streams at once\n", + __func__, __LINE__); + break; + default: + break; + } + if (sel & VCAP_SEL_COUNTER) { + start = start & 0xfff; /* counter limit */ + if (admin->vinst == 0) + spx5_wr(admin->cache.counter, sparx5, + ANA_ACL_CNT_A(start)); + else + spx5_wr(admin->cache.counter, sparx5, + ANA_ACL_CNT_B(start)); + spx5_wr(admin->cache.sticky, sparx5, + VCAP_SUPER_VCAP_CNT_DAT(0)); + } +} + +/* API callback used for reading from the VCAP into the VCAP cache */ +static void sparx5_vcap_cache_read(struct net_device *ndev, + struct vcap_admin *admin, + enum vcap_selection sel, + u32 start, + u32 count) +{ + struct sparx5_port *port = netdev_priv(ndev); + struct sparx5 *sparx5 = port->sparx5; + u32 *keystr, *mskstr, *actstr; + int idx; + + keystr = &admin->cache.keystream[start]; + mskstr = &admin->cache.maskstream[start]; + actstr = &admin->cache.actionstream[start]; + if (sel & VCAP_SEL_ENTRY) { + for (idx = 0; idx < count; ++idx) { + keystr[idx] = spx5_rd(sparx5, + VCAP_SUPER_VCAP_ENTRY_DAT(idx)); + mskstr[idx] = ~spx5_rd(sparx5, + VCAP_SUPER_VCAP_MASK_DAT(idx)); + } + } + if (sel & VCAP_SEL_ACTION) { + for (idx = 0; idx < count; ++idx) + actstr[idx] = spx5_rd(sparx5, + VCAP_SUPER_VCAP_ACTION_DAT(idx)); + } + if (sel & VCAP_SEL_COUNTER) { + start = start & 0xfff; /* counter limit */ + if (admin->vinst == 0) + admin->cache.counter = + spx5_rd(sparx5, ANA_ACL_CNT_A(start)); + else + admin->cache.counter = + spx5_rd(sparx5, ANA_ACL_CNT_B(start)); + admin->cache.sticky = + spx5_rd(sparx5, VCAP_SUPER_VCAP_CNT_DAT(0)); + } +} + +/* API callback used for initializing a VCAP address range */ +static void sparx5_vcap_range_init(struct net_device *ndev, + struct vcap_admin *admin, u32 addr, + u32 count) +{ + struct sparx5_port *port = netdev_priv(ndev); + struct sparx5 *sparx5 = port->sparx5; + + _sparx5_vcap_range_init(sparx5, admin, addr, count); +} + +/* API callback used for updating the VCAP cache */ +static void sparx5_vcap_update(struct net_device *ndev, + struct vcap_admin *admin, enum vcap_command cmd, + enum vcap_selection sel, u32 addr) +{ + struct sparx5_port *port = netdev_priv(ndev); + struct sparx5 *sparx5 = port->sparx5; + bool clear; + + clear = (cmd == VCAP_CMD_INITIALIZE); + spx5_wr(VCAP_SUPER_CFG_MV_NUM_POS_SET(0) | + VCAP_SUPER_CFG_MV_SIZE_SET(0), sparx5, VCAP_SUPER_CFG); + spx5_wr(VCAP_SUPER_CTRL_UPDATE_CMD_SET(cmd) | + VCAP_SUPER_CTRL_UPDATE_ENTRY_DIS_SET((VCAP_SEL_ENTRY & sel) == 0) | + VCAP_SUPER_CTRL_UPDATE_ACTION_DIS_SET((VCAP_SEL_ACTION & sel) == 0) | + VCAP_SUPER_CTRL_UPDATE_CNT_DIS_SET((VCAP_SEL_COUNTER & sel) == 0) | + VCAP_SUPER_CTRL_UPDATE_ADDR_SET(addr) | + VCAP_SUPER_CTRL_CLEAR_CACHE_SET(clear) | + VCAP_SUPER_CTRL_UPDATE_SHOT_SET(true), + sparx5, VCAP_SUPER_CTRL); + sparx5_vcap_wait_super_update(sparx5); +} + +/* API callback used for moving a block of rules in the VCAP */ +static void sparx5_vcap_move(struct net_device *ndev, struct vcap_admin *admin, + u32 addr, int offset, int count) +{ + struct sparx5_port *port = netdev_priv(ndev); + struct sparx5 *sparx5 = port->sparx5; + enum vcap_command cmd; + u16 mv_num_pos; + u16 mv_size; + + mv_size = count - 1; + if (offset > 0) { + mv_num_pos = offset - 1; + cmd = VCAP_CMD_MOVE_DOWN; + } else { + mv_num_pos = -offset - 1; + cmd = VCAP_CMD_MOVE_UP; + } + spx5_wr(VCAP_SUPER_CFG_MV_NUM_POS_SET(mv_num_pos) | + VCAP_SUPER_CFG_MV_SIZE_SET(mv_size), + sparx5, VCAP_SUPER_CFG); + spx5_wr(VCAP_SUPER_CTRL_UPDATE_CMD_SET(cmd) | + VCAP_SUPER_CTRL_UPDATE_ENTRY_DIS_SET(0) | + VCAP_SUPER_CTRL_UPDATE_ACTION_DIS_SET(0) | + VCAP_SUPER_CTRL_UPDATE_CNT_DIS_SET(0) | + VCAP_SUPER_CTRL_UPDATE_ADDR_SET(addr) | + VCAP_SUPER_CTRL_CLEAR_CACHE_SET(false) | + VCAP_SUPER_CTRL_UPDATE_SHOT_SET(true), + sparx5, VCAP_SUPER_CTRL); + sparx5_vcap_wait_super_update(sparx5); +} + +/* Enable all lookups in the VCAP instance */ +static int sparx5_vcap_enable(struct net_device *ndev, + struct vcap_admin *admin, + bool enable) +{ + struct sparx5_port *port = netdev_priv(ndev); + struct sparx5 *sparx5; + int portno; + + sparx5 = port->sparx5; + portno = port->portno; + + /* For now we only consider IS2 */ + if (enable) + spx5_wr(ANA_ACL_VCAP_S2_CFG_SEC_ENA_SET(0xf), sparx5, + ANA_ACL_VCAP_S2_CFG(portno)); + else + spx5_wr(ANA_ACL_VCAP_S2_CFG_SEC_ENA_SET(0), sparx5, + ANA_ACL_VCAP_S2_CFG(portno)); + return 0; +} + +/* API callback operations: only IS2 is supported for now */ +static struct vcap_operations sparx5_vcap_ops = { + .validate_keyset = sparx5_vcap_validate_keyset, + .add_default_fields = sparx5_vcap_add_default_fields, + .cache_erase = sparx5_vcap_cache_erase, + .cache_write = sparx5_vcap_cache_write, + .cache_read = sparx5_vcap_cache_read, + .init = sparx5_vcap_range_init, + .update = sparx5_vcap_update, + .move = sparx5_vcap_move, + .port_info = sparx5_port_info, + .enable = sparx5_vcap_enable, +}; + +/* Enable lookups per port and set the keyset generation: only IS2 for now */ +static void sparx5_vcap_port_key_selection(struct sparx5 *sparx5, + struct vcap_admin *admin) +{ + int portno, lookup; + u32 keysel; + + /* all traffic types generate the MAC_ETYPE keyset for now in all + * lookups on all ports + */ + keysel = VCAP_IS2_KEYSEL(true, VCAP_IS2_PS_NONETH_MAC_ETYPE, + VCAP_IS2_PS_IPV4_MC_IP4_TCP_UDP_OTHER, + VCAP_IS2_PS_IPV4_UC_IP4_TCP_UDP_OTHER, + VCAP_IS2_PS_IPV6_MC_IP_7TUPLE, + VCAP_IS2_PS_IPV6_UC_IP_7TUPLE, + VCAP_IS2_PS_ARP_ARP); + for (lookup = 0; lookup < admin->lookups; ++lookup) { + for (portno = 0; portno < SPX5_PORTS; ++portno) { + spx5_wr(keysel, sparx5, + ANA_ACL_VCAP_S2_KEY_SEL(portno, lookup)); + } + } +} + +/* Disable lookups per port and set the keyset generation: only IS2 for now */ +static void sparx5_vcap_port_key_deselection(struct sparx5 *sparx5, + struct vcap_admin *admin) +{ + int portno; + + for (portno = 0; portno < SPX5_PORTS; ++portno) + spx5_rmw(ANA_ACL_VCAP_S2_CFG_SEC_ENA_SET(0), + ANA_ACL_VCAP_S2_CFG_SEC_ENA, + sparx5, + ANA_ACL_VCAP_S2_CFG(portno)); +} + +static void sparx5_vcap_admin_free(struct vcap_admin *admin) +{ + if (!admin) + return; + mutex_destroy(&admin->lock); + kfree(admin->cache.keystream); + kfree(admin->cache.maskstream); + kfree(admin->cache.actionstream); + kfree(admin); +} + +/* Allocate a vcap instance with a rule list and a cache area */ +static struct vcap_admin * +sparx5_vcap_admin_alloc(struct sparx5 *sparx5, struct vcap_control *ctrl, + const struct sparx5_vcap_inst *cfg) +{ + struct vcap_admin *admin; + + admin = kzalloc(sizeof(*admin), GFP_KERNEL); + if (!admin) + return ERR_PTR(-ENOMEM); + INIT_LIST_HEAD(&admin->list); + INIT_LIST_HEAD(&admin->rules); + INIT_LIST_HEAD(&admin->enabled); + mutex_init(&admin->lock); + admin->vtype = cfg->vtype; + admin->vinst = cfg->vinst; + admin->lookups = cfg->lookups; + admin->lookups_per_instance = cfg->lookups_per_instance; + admin->first_cid = cfg->first_cid; + admin->last_cid = cfg->last_cid; + admin->cache.keystream = + kzalloc(STREAMSIZE, GFP_KERNEL); + admin->cache.maskstream = + kzalloc(STREAMSIZE, GFP_KERNEL); + admin->cache.actionstream = + kzalloc(STREAMSIZE, GFP_KERNEL); + if (!admin->cache.keystream || !admin->cache.maskstream || + !admin->cache.actionstream) { + sparx5_vcap_admin_free(admin); + return ERR_PTR(-ENOMEM); + } + return admin; +} + +/* Do block allocations and provide addresses for VCAP instances */ +static void sparx5_vcap_block_alloc(struct sparx5 *sparx5, + struct vcap_admin *admin, + const struct sparx5_vcap_inst *cfg) +{ + int idx; + + /* Super VCAP block mapping and address configuration. Block 0 + * is assigned addresses 0 through 3071, block 1 is assigned + * addresses 3072 though 6143, and so on. + */ + for (idx = cfg->blockno; idx < cfg->blockno + cfg->blocks; ++idx) { + spx5_wr(VCAP_SUPER_IDX_CORE_IDX_SET(idx), sparx5, + VCAP_SUPER_IDX); + spx5_wr(VCAP_SUPER_MAP_CORE_MAP_SET(cfg->map_id), sparx5, + VCAP_SUPER_MAP); + } + admin->first_valid_addr = cfg->blockno * SUPER_VCAP_BLK_SIZE; + admin->last_used_addr = admin->first_valid_addr + + cfg->blocks * SUPER_VCAP_BLK_SIZE; + admin->last_valid_addr = admin->last_used_addr - 1; +} + +/* Allocate a vcap control and vcap instances and configure the system */ +int sparx5_vcap_init(struct sparx5 *sparx5) +{ + const struct sparx5_vcap_inst *cfg; + struct vcap_control *ctrl; + struct vcap_admin *admin; + struct dentry *dir; + int err = 0, idx; + + /* Create a VCAP control instance that owns the platform specific VCAP + * model with VCAP instances and information about keysets, keys, + * actionsets and actions + * - Create administrative state for each available VCAP + * - Lists of rules + * - Address information + * - Initialize VCAP blocks + * - Configure port keysets + */ + ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL); + if (!ctrl) + return -ENOMEM; + + sparx5->vcap_ctrl = ctrl; + /* select the sparx5 VCAP model */ + ctrl->vcaps = sparx5_vcaps; + ctrl->stats = &sparx5_vcap_stats; + /* Setup callbacks to allow the API to use the VCAP HW */ + ctrl->ops = &sparx5_vcap_ops; + + INIT_LIST_HEAD(&ctrl->list); + for (idx = 0; idx < ARRAY_SIZE(sparx5_vcap_inst_cfg); ++idx) { + cfg = &sparx5_vcap_inst_cfg[idx]; + admin = sparx5_vcap_admin_alloc(sparx5, ctrl, cfg); + if (IS_ERR(admin)) { + err = PTR_ERR(admin); + pr_err("%s:%d: vcap allocation failed: %d\n", + __func__, __LINE__, err); + return err; + } + sparx5_vcap_block_alloc(sparx5, admin, cfg); + sparx5_vcap_block_init(sparx5, admin); + if (cfg->vinst == 0) + sparx5_vcap_port_key_selection(sparx5, admin); + list_add_tail(&admin->list, &ctrl->list); + } + dir = vcap_debugfs(sparx5->dev, sparx5->debugfs_root, ctrl); + for (idx = 0; idx < SPX5_PORTS; ++idx) + if (sparx5->ports[idx]) + vcap_port_debugfs(sparx5->dev, dir, ctrl, + sparx5->ports[idx]->ndev); + + return err; +} + +void sparx5_vcap_destroy(struct sparx5 *sparx5) +{ + struct vcap_control *ctrl = sparx5->vcap_ctrl; + struct vcap_admin *admin, *admin_next; + + if (!ctrl) + return; + + list_for_each_entry_safe(admin, admin_next, &ctrl->list, list) { + sparx5_vcap_port_key_deselection(sparx5, admin); + vcap_del_rules(ctrl, admin); + list_del(&admin->list); + sparx5_vcap_admin_free(admin); + } + kfree(ctrl); +} |