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mlxsw: reg: Add Switch Filtering Database register definition
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Add the SFD register which is responsible for filtering database
manipulation, including static and dynamic FDB entries.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Jiri Pirko authored and David S. Miller committed Oct 16, 2015
1 parent d64b159 commit 236033b
Showing 1 changed file with 216 additions and 0 deletions.
216 changes: 216 additions & 0 deletions drivers/net/ethernet/mellanox/mlxsw/reg.h
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Original file line number Diff line number Diff line change
Expand Up @@ -157,6 +157,220 @@ static inline void mlxsw_reg_sspr_pack(char *payload, u8 local_port)
mlxsw_reg_sspr_system_port_set(payload, local_port);
}

/* SFD - Switch Filtering Database
* -------------------------------
* The following register defines the access to the filtering database.
* The register supports querying, adding, removing and modifying the database.
* The access is optimized for bulk updates in which case more than one
* FDB record is present in the same command.
*/
#define MLXSW_REG_SFD_ID 0x200A
#define MLXSW_REG_SFD_BASE_LEN 0x10 /* base length, without records */
#define MLXSW_REG_SFD_REC_LEN 0x10 /* record length */
#define MLXSW_REG_SFD_REC_MAX_COUNT 64
#define MLXSW_REG_SFD_LEN (MLXSW_REG_SFD_BASE_LEN + \
MLXSW_REG_SFD_REC_LEN * MLXSW_REG_SFD_REC_MAX_COUNT)

static const struct mlxsw_reg_info mlxsw_reg_sfd = {
.id = MLXSW_REG_SFD_ID,
.len = MLXSW_REG_SFD_LEN,
};

/* reg_sfd_swid
* Switch partition ID for queries. Reserved on Write.
* Access: Index
*/
MLXSW_ITEM32(reg, sfd, swid, 0x00, 24, 8);

enum mlxsw_reg_sfd_op {
/* Dump entire FDB a (process according to record_locator) */
MLXSW_REG_SFD_OP_QUERY_DUMP = 0,
/* Query records by {MAC, VID/FID} value */
MLXSW_REG_SFD_OP_QUERY_QUERY = 1,
/* Query and clear activity. Query records by {MAC, VID/FID} value */
MLXSW_REG_SFD_OP_QUERY_QUERY_AND_CLEAR_ACTIVITY = 2,
/* Test. Response indicates if each of the records could be
* added to the FDB.
*/
MLXSW_REG_SFD_OP_WRITE_TEST = 0,
/* Add/modify. Aged-out records cannot be added. This command removes
* the learning notification of the {MAC, VID/FID}. Response includes
* the entries that were added to the FDB.
*/
MLXSW_REG_SFD_OP_WRITE_EDIT = 1,
/* Remove record by {MAC, VID/FID}. This command also removes
* the learning notification and aged-out notifications
* of the {MAC, VID/FID}. The response provides current (pre-removal)
* entries as non-aged-out.
*/
MLXSW_REG_SFD_OP_WRITE_REMOVE = 2,
/* Remove learned notification by {MAC, VID/FID}. The response provides
* the removed learning notification.
*/
MLXSW_REG_SFD_OP_WRITE_REMOVE_NOTIFICATION = 2,
};

/* reg_sfd_op
* Operation.
* Access: OP
*/
MLXSW_ITEM32(reg, sfd, op, 0x04, 30, 2);

/* reg_sfd_record_locator
* Used for querying the FDB. Use record_locator=0 to initiate the
* query. When a record is returned, a new record_locator is
* returned to be used in the subsequent query.
* Reserved for database update.
* Access: Index
*/
MLXSW_ITEM32(reg, sfd, record_locator, 0x04, 0, 30);

/* reg_sfd_num_rec
* Request: Number of records to read/add/modify/remove
* Response: Number of records read/added/replaced/removed
* See above description for more details.
* Ranges 0..64
* Access: RW
*/
MLXSW_ITEM32(reg, sfd, num_rec, 0x08, 0, 8);

static inline void mlxsw_reg_sfd_pack(char *payload, enum mlxsw_reg_sfd_op op,
u32 record_locator)
{
MLXSW_REG_ZERO(sfd, payload);
mlxsw_reg_sfd_op_set(payload, op);
mlxsw_reg_sfd_record_locator_set(payload, record_locator);
}

/* reg_sfd_rec_swid
* Switch partition ID.
* Access: Index
*/
MLXSW_ITEM32_INDEXED(reg, sfd, rec_swid, MLXSW_REG_SFD_BASE_LEN, 24, 8,
MLXSW_REG_SFD_REC_LEN, 0x00, false);

enum mlxsw_reg_sfd_rec_type {
MLXSW_REG_SFD_REC_TYPE_UNICAST = 0x0,
};

/* reg_sfd_rec_type
* FDB record type.
* Access: RW
*/
MLXSW_ITEM32_INDEXED(reg, sfd, rec_type, MLXSW_REG_SFD_BASE_LEN, 20, 4,
MLXSW_REG_SFD_REC_LEN, 0x00, false);

enum mlxsw_reg_sfd_rec_policy {
/* Replacement disabled, aging disabled. */
MLXSW_REG_SFD_REC_POLICY_STATIC_ENTRY = 0,
/* (mlag remote): Replacement enabled, aging disabled,
* learning notification enabled on this port.
*/
MLXSW_REG_SFD_REC_POLICY_DYNAMIC_ENTRY_MLAG = 1,
/* (ingress device): Replacement enabled, aging enabled. */
MLXSW_REG_SFD_REC_POLICY_DYNAMIC_ENTRY_INGRESS = 3,
};

/* reg_sfd_rec_policy
* Policy.
* Access: RW
*/
MLXSW_ITEM32_INDEXED(reg, sfd, rec_policy, MLXSW_REG_SFD_BASE_LEN, 18, 2,
MLXSW_REG_SFD_REC_LEN, 0x00, false);

/* reg_sfd_rec_a
* Activity. Set for new static entries. Set for static entries if a frame SMAC
* lookup hits on the entry.
* To clear the a bit, use "query and clear activity" op.
* Access: RO
*/
MLXSW_ITEM32_INDEXED(reg, sfd, rec_a, MLXSW_REG_SFD_BASE_LEN, 16, 1,
MLXSW_REG_SFD_REC_LEN, 0x00, false);

/* reg_sfd_rec_mac
* MAC address.
* Access: Index
*/
MLXSW_ITEM_BUF_INDEXED(reg, sfd, rec_mac, MLXSW_REG_SFD_BASE_LEN, 6,
MLXSW_REG_SFD_REC_LEN, 0x02);

enum mlxsw_reg_sfd_rec_action {
/* forward */
MLXSW_REG_SFD_REC_ACTION_NOP = 0,
/* forward and trap, trap_id is FDB_TRAP */
MLXSW_REG_SFD_REC_ACTION_MIRROR_TO_CPU = 1,
/* trap and do not forward, trap_id is FDB_TRAP */
MLXSW_REG_SFD_REC_ACTION_TRAP = 3,
MLXSW_REG_SFD_REC_ACTION_DISCARD_ERROR = 15,
};

/* reg_sfd_rec_action
* Action to apply on the packet.
* Note: Dynamic entries can only be configured with NOP action.
* Access: RW
*/
MLXSW_ITEM32_INDEXED(reg, sfd, rec_action, MLXSW_REG_SFD_BASE_LEN, 28, 4,
MLXSW_REG_SFD_REC_LEN, 0x0C, false);

/* reg_sfd_uc_sub_port
* LAG sub port.
* Must be 0 if multichannel VEPA is not enabled.
* Access: RW
*/
MLXSW_ITEM32_INDEXED(reg, sfd, uc_sub_port, MLXSW_REG_SFD_BASE_LEN, 16, 8,
MLXSW_REG_SFD_REC_LEN, 0x08, false);

/* reg_sfd_uc_fid_vid
* Filtering ID or VLAN ID
* For SwitchX and SwitchX-2:
* - Dynamic entries (policy 2,3) use FID
* - Static entries (policy 0) use VID
* - When independent learning is configured, VID=FID
* For Spectrum: use FID for both Dynamic and Static entries.
* VID should not be used.
* Access: Index
*/
MLXSW_ITEM32_INDEXED(reg, sfd, uc_fid_vid, MLXSW_REG_SFD_BASE_LEN, 0, 16,
MLXSW_REG_SFD_REC_LEN, 0x08, false);

/* reg_sfd_uc_system_port
* Unique port identifier for the final destination of the packet.
* Access: RW
*/
MLXSW_ITEM32_INDEXED(reg, sfd, uc_system_port, MLXSW_REG_SFD_BASE_LEN, 0, 16,
MLXSW_REG_SFD_REC_LEN, 0x0C, false);

static inline void mlxsw_reg_sfd_uc_pack(char *payload, int rec_index,
enum mlxsw_reg_sfd_rec_policy policy,
const char *mac, u16 vid,
enum mlxsw_reg_sfd_rec_action action,
u8 local_port)
{
u8 num_rec = mlxsw_reg_sfd_num_rec_get(payload);

if (rec_index >= num_rec)
mlxsw_reg_sfd_num_rec_set(payload, rec_index + 1);
mlxsw_reg_sfd_rec_swid_set(payload, rec_index, 0);
mlxsw_reg_sfd_rec_type_set(payload, rec_index,
MLXSW_REG_SFD_REC_TYPE_UNICAST);
mlxsw_reg_sfd_rec_policy_set(payload, rec_index, policy);
mlxsw_reg_sfd_rec_mac_memcpy_to(payload, rec_index, mac);
mlxsw_reg_sfd_uc_sub_port_set(payload, rec_index, 0);
mlxsw_reg_sfd_uc_fid_vid_set(payload, rec_index, vid);
mlxsw_reg_sfd_rec_action_set(payload, rec_index, action);
mlxsw_reg_sfd_uc_system_port_set(payload, rec_index, local_port);
}

static inline void
mlxsw_reg_sfd_uc_unpack(char *payload, int rec_index,
char *mac, u16 *p_vid,
u8 *p_local_port)
{
mlxsw_reg_sfd_rec_mac_memcpy_from(payload, rec_index, mac);
*p_vid = mlxsw_reg_sfd_uc_fid_vid_get(payload, rec_index);
*p_local_port = mlxsw_reg_sfd_uc_system_port_get(payload, rec_index);
}

/* SPMS - Switch Port MSTP/RSTP State Register
* -------------------------------------------
* Configures the spanning tree state of a physical port.
Expand Down Expand Up @@ -1251,6 +1465,8 @@ static inline const char *mlxsw_reg_id_str(u16 reg_id)
return "SPAD";
case MLXSW_REG_SSPR_ID:
return "SSPR";
case MLXSW_REG_SFD_ID:
return "SFD";
case MLXSW_REG_SPMS_ID:
return "SPMS";
case MLXSW_REG_SFGC_ID:
Expand Down

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