/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (c) Meta Platforms, Inc. and affiliates. */
#ifndef _FBNIC_RPC_H_
#define _FBNIC_RPC_H_
#include <uapi/linux/in6.h>
#include <linux/bitfield.h>
struct in_addr;
/* The TCAM state definitions follow an expected ordering.
* They start out disabled , then move through the following states :
* Disabled 0 - > Add 2
* Add 2 - > Valid 1
*
* Valid 1 - > Add / Update 2
* Add 2 - > Valid 1
*
* Valid 1 - > Delete 3
* Delete 3 - > Disabled 0
*/
enum {
FBNIC_TCAM_S_DISABLED = 0 ,
FBNIC_TCAM_S_VALID = 1 ,
FBNIC_TCAM_S_ADD = 2 ,
FBNIC_TCAM_S_UPDATE = FBNIC_TCAM_S_ADD,
FBNIC_TCAM_S_DELETE = 3 ,
};
/* 32 MAC Destination Address TCAM Entries
* 4 registers DA [ 1 : 0 ] , DA [ 3 : 2 ] , DA [ 5 : 4 ] , Validate
*/
#define FBNIC_RPC_TCAM_MACDA_WORD_LEN 3
#define FBNIC_RPC_TCAM_MACDA_NUM_ENTRIES 32
/* 8 IPSRC and IPDST TCAM Entries each
* 8 registers , Validate each
*/
#define FBNIC_RPC_TCAM_IP_ADDR_WORD_LEN 8
#define FBNIC_RPC_TCAM_IP_ADDR_NUM_ENTRIES 8
#define FBNIC_RPC_TCAM_ACT_WORD_LEN 11
#define FBNIC_RPC_TCAM_ACT_NUM_ENTRIES 64
#define FBNIC_TCE_TCAM_WORD_LEN 3
#define FBNIC_TCE_TCAM_NUM_ENTRIES 8
struct fbnic_mac_addr {
union {
unsigned char addr8[ETH_ALEN];
__be16 addr16[FBNIC_RPC_TCAM_MACDA_WORD_LEN];
} mask, value;
unsigned char state;
DECLARE_BITMAP(act_tcam, FBNIC_RPC_TCAM_ACT_NUM_ENTRIES);
};
struct fbnic_ip_addr {
struct in6_addr mask, value;
unsigned char version;
unsigned char state;
DECLARE_BITMAP(act_tcam, FBNIC_RPC_TCAM_ACT_NUM_ENTRIES);
};
struct fbnic_act_tcam {
struct {
u16 tcam[FBNIC_RPC_TCAM_ACT_WORD_LEN];
} mask, value;
unsigned char state;
u16 rss_en_mask;
u32 dest;
};
enum {
FBNIC_RSS_EN_HOST_UDP6,
FBNIC_RSS_EN_HOST_UDP4,
FBNIC_RSS_EN_HOST_TCP6,
FBNIC_RSS_EN_HOST_TCP4,
FBNIC_RSS_EN_HOST_IP6,
FBNIC_RSS_EN_HOST_IP4,
FBNIC_RSS_EN_HOST_ETHER,
FBNIC_RSS_EN_XCAST_UDP6,
#define FBNIC_RSS_EN_NUM_UNICAST FBNIC_RSS_EN_XCAST_UDP6
FBNIC_RSS_EN_XCAST_UDP4,
FBNIC_RSS_EN_XCAST_TCP6,
FBNIC_RSS_EN_XCAST_TCP4,
FBNIC_RSS_EN_XCAST_IP6,
FBNIC_RSS_EN_XCAST_IP4,
FBNIC_RSS_EN_XCAST_ETHER,
FBNIC_RSS_EN_NUM_ENTRIES
};
/* Reserve the first 2 entries for the use by the BMC so that we can
* avoid allowing rules to get in the way of BMC unicast traffic .
*/
#define FBNIC_RPC_ACT_TBL_BMC_OFFSET 0
#define FBNIC_RPC_ACT_TBL_BMC_ALL_MULTI_OFFSET 1
/* This should leave us with 48 total entries in the TCAM that can be used
* for NFC after also deducting the 14 needed for RSS table programming .
*/
#define FBNIC_RPC_ACT_TBL_NFC_OFFSET 2
/* We reserve the last 14 entries for RSS rules on the host. The BMC
* unicast rule will need to be populated above these and is expected to
* use MACDA TCAM entry 23 to store the BMC MAC address .
*/
#define FBNIC_RPC_ACT_TBL_RSS_OFFSET \
(FBNIC_RPC_ACT_TBL_NUM_ENTRIES - FBNIC_RSS_EN_NUM_ENTRIES)
#define FBNIC_RPC_ACT_TBL_NFC_ENTRIES \
(FBNIC_RPC_ACT_TBL_RSS_OFFSET - FBNIC_RPC_ACT_TBL_NFC_OFFSET)
/* Flags used to identify the owner for this MAC filter. Note that any
* flags set for Broadcast thru Promisc indicate that the rule belongs
* to the RSS filters for the host .
*/
enum {
FBNIC_MAC_ADDR_T_BMC = 0 ,
FBNIC_MAC_ADDR_T_BROADCAST = FBNIC_RPC_ACT_TBL_RSS_OFFSET,
#define FBNIC_MAC_ADDR_T_HOST_START FBNIC_MAC_ADDR_T_BROADCAST
FBNIC_MAC_ADDR_T_MULTICAST,
FBNIC_MAC_ADDR_T_UNICAST,
FBNIC_MAC_ADDR_T_ALLMULTI, /* BROADCAST ... MULTICAST*/
FBNIC_MAC_ADDR_T_PROMISC, /* BROADCAST ... UNICAST */
FBNIC_MAC_ADDR_T_HOST_LAST
};
#define FBNIC_MAC_ADDR_T_HOST_LEN \
(FBNIC_MAC_ADDR_T_HOST_LAST - FBNIC_MAC_ADDR_T_HOST_START)
#define FBNIC_RPC_TCAM_ACT0_IPSRC_IDX CSR_GENMASK(2 , 0 )
#define FBNIC_RPC_TCAM_ACT0_IPSRC_VALID CSR_BIT(3 )
#define FBNIC_RPC_TCAM_ACT0_IPDST_IDX CSR_GENMASK(6 , 4 )
#define FBNIC_RPC_TCAM_ACT0_IPDST_VALID CSR_BIT(7 )
#define FBNIC_RPC_TCAM_ACT0_OUTER_IPSRC_IDX CSR_GENMASK(10 , 8 )
#define FBNIC_RPC_TCAM_ACT0_OUTER_IPSRC_VALID CSR_BIT(11 )
#define FBNIC_RPC_TCAM_ACT0_OUTER_IPDST_IDX CSR_GENMASK(14 , 12 )
#define FBNIC_RPC_TCAM_ACT0_OUTER_IPDST_VALID CSR_BIT(15 )
#define FBNIC_RPC_TCAM_ACT1_L2_MACDA_IDX CSR_GENMASK(9 , 5 )
#define FBNIC_RPC_TCAM_ACT1_L2_MACDA_VALID CSR_BIT(10 )
#define FBNIC_RPC_TCAM_ACT1_IP_IS_V6 CSR_BIT(11 )
#define FBNIC_RPC_TCAM_ACT1_IP_VALID CSR_BIT(12 )
#define FBNIC_RPC_TCAM_ACT1_OUTER_IP_VALID CSR_BIT(13 )
#define FBNIC_RPC_TCAM_ACT1_L4_IS_UDP CSR_BIT(14 )
#define FBNIC_RPC_TCAM_ACT1_L4_VALID CSR_BIT(15 )
/* TCAM 0 - 3 reserved for BMC MAC addresses */
#define FBNIC_RPC_TCAM_MACDA_BMC_ADDR_IDX 0
/* TCAM 4 reserved for broadcast MAC address */
#define FBNIC_RPC_TCAM_MACDA_BROADCAST_IDX 4
/* TCAMs 5 - 30 will be used for multicast and unicast addresses. The
* boundary between the two can be variable it is currently set to 24
* on which the unicast addresses start . The general idea is that we will
* always go top - down with unicast , and bottom - up with multicast so that
* there should be free - space in the middle between the two .
*
* The entry at MADCA_DEFAULT_BOUNDARY is a special case as it can be used
* for the ALL MULTI address if the list is full , or the BMC has requested
* it .
*/
#define FBNIC_RPC_TCAM_MACDA_MULTICAST_IDX 5
#define FBNIC_RPC_TCAM_MACDA_DEFAULT_BOUNDARY 24
#define FBNIC_RPC_TCAM_MACDA_HOST_ADDR_IDX 30
/* Reserved for use to record Multicast promisc, or Promiscuous */
#define FBNIC_RPC_TCAM_MACDA_PROMISC_IDX 31
enum {
FBNIC_UDP6_HASH_OPT,
FBNIC_UDP4_HASH_OPT,
FBNIC_TCP6_HASH_OPT,
FBNIC_TCP4_HASH_OPT,
#define FBNIC_L4_HASH_OPT FBNIC_TCP4_HASH_OPT
FBNIC_IPV6_HASH_OPT,
FBNIC_IPV4_HASH_OPT,
#define FBNIC_IP_HASH_OPT FBNIC_IPV4_HASH_OPT
FBNIC_ETHER_HASH_OPT,
FBNIC_NUM_HASH_OPT,
};
struct fbnic_dev;
struct fbnic_net;
void fbnic_bmc_rpc_init(struct fbnic_dev *fbd);
void fbnic_bmc_rpc_all_multi_config(struct fbnic_dev *fbd, bool enable_host);
void fbnic_reset_indir_tbl(struct fbnic_net *fbn);
void fbnic_rss_key_fill(u32 *buffer);
void fbnic_rss_init_en_mask(struct fbnic_net *fbn);
void fbnic_rss_disable_hw(struct fbnic_dev *fbd);
void fbnic_rss_reinit_hw(struct fbnic_dev *fbd, struct fbnic_net *fbn);
void fbnic_rss_reinit(struct fbnic_dev *fbd, struct fbnic_net *fbn);
u16 fbnic_flow_hash_2_rss_en_mask(struct fbnic_net *fbn, int flow_type);
int __fbnic_xc_unsync(struct fbnic_mac_addr *mac_addr, unsigned int tcam_idx);
struct fbnic_mac_addr *__fbnic_uc_sync(struct fbnic_dev *fbd,
const unsigned char *addr);
struct fbnic_mac_addr *__fbnic_mc_sync(struct fbnic_dev *fbd,
const unsigned char *addr);
void fbnic_sift_macda(struct fbnic_dev *fbd);
void fbnic_write_macda(struct fbnic_dev *fbd);
struct fbnic_ip_addr *__fbnic_ip4_sync(struct fbnic_dev *fbd,
struct fbnic_ip_addr *ip_addr,
const struct in_addr *addr,
const struct in_addr *mask);
struct fbnic_ip_addr *__fbnic_ip6_sync(struct fbnic_dev *fbd,
struct fbnic_ip_addr *ip_addr,
const struct in6_addr *addr,
const struct in6_addr *mask);
int __fbnic_ip_unsync(struct fbnic_ip_addr *ip_addr, unsigned int tcam_idx);
void fbnic_write_ip_addr(struct fbnic_dev *fbd);
static inline int __fbnic_uc_unsync(struct fbnic_mac_addr *mac_addr)
{
return __fbnic_xc_unsync(mac_addr, FBNIC_MAC_ADDR_T_UNICAST);
}
static inline int __fbnic_mc_unsync(struct fbnic_mac_addr *mac_addr)
{
return __fbnic_xc_unsync(mac_addr, FBNIC_MAC_ADDR_T_MULTICAST);
}
void fbnic_clear_rules(struct fbnic_dev *fbd);
void fbnic_write_rules(struct fbnic_dev *fbd);
void fbnic_write_tce_tcam(struct fbnic_dev *fbd);
#endif /* _FBNIC_RPC_H_ */
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