From: Nogah Frankel Date: Thu, 21 Jul 2016 10:03:09 +0000 (+0200) Subject: mlxsw: pci: Add resources query implementation. X-Git-Tag: v4.14-rc1~2816^2~43^2~8 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=57d316ba2017d824ed0fd95fc98b020c834023a1;p=platform%2Fkernel%2Flinux-rpi.git mlxsw: pci: Add resources query implementation. Add resources query implementation. If exists, query the HW for its builtin resources instead of having them as consts in the code. Signed-off-by: Nogah Frankel Reviewed-by: Ido Schimmel Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/mellanox/mlxsw/cmd.h b/drivers/net/ethernet/mellanox/mlxsw/cmd.h index f9cd6e3..28271be 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/cmd.h +++ b/drivers/net/ethernet/mellanox/mlxsw/cmd.h @@ -105,6 +105,7 @@ enum mlxsw_cmd_opcode { MLXSW_CMD_OPCODE_SW2HW_EQ = 0x013, MLXSW_CMD_OPCODE_HW2SW_EQ = 0x014, MLXSW_CMD_OPCODE_QUERY_EQ = 0x015, + MLXSW_CMD_OPCODE_QUERY_RESOURCES = 0x101, }; static inline const char *mlxsw_cmd_opcode_str(u16 opcode) @@ -144,6 +145,8 @@ static inline const char *mlxsw_cmd_opcode_str(u16 opcode) return "HW2SW_EQ"; case MLXSW_CMD_OPCODE_QUERY_EQ: return "QUERY_EQ"; + case MLXSW_CMD_OPCODE_QUERY_RESOURCES: + return "QUERY_RESOURCES"; default: return "*UNKNOWN*"; } @@ -500,6 +503,35 @@ static inline int mlxsw_cmd_unmap_fa(struct mlxsw_core *mlxsw_core) return mlxsw_cmd_exec_none(mlxsw_core, MLXSW_CMD_OPCODE_UNMAP_FA, 0, 0); } +/* QUERY_RESOURCES - Query chip resources + * -------------------------------------- + * OpMod == 0 (N/A) , INMmod is index + * ---------------------------------- + * The QUERY_RESOURCES command retrieves information related to chip resources + * by resource ID. Every command returns 32 entries. INmod is being use as base. + * for example, index 1 will return entries 32-63. When the tables end and there + * are no more sources in the table, will return resource id 0xFFF to indicate + * it. + */ +static inline int mlxsw_cmd_query_resources(struct mlxsw_core *mlxsw_core, + char *out_mbox, int index) +{ + return mlxsw_cmd_exec_out(mlxsw_core, MLXSW_CMD_OPCODE_QUERY_RESOURCES, + 0, index, false, out_mbox, + MLXSW_CMD_MBOX_SIZE); +} + +/* cmd_mbox_query_resource_id + * The resource id. 0xFFFF indicates table's end. + */ +MLXSW_ITEM32_INDEXED(cmd_mbox, query_resource, id, 0x00, 16, 16, 0x8, 0, false); + +/* cmd_mbox_query_resource_data + * The resource + */ +MLXSW_ITEM64_INDEXED(cmd_mbox, query_resource, data, + 0x00, 0, 40, 0x8, 0, false); + /* CONFIG_PROFILE (Set) - Configure Switch Profile * ------------------------------ * OpMod == 1 (Set), INMmod == 0 (N/A) diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.c b/drivers/net/ethernet/mellanox/mlxsw/core.c index 480a3ba..068ee65a 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/core.c +++ b/drivers/net/ethernet/mellanox/mlxsw/core.c @@ -111,6 +111,7 @@ struct mlxsw_core { struct { u8 *mapping; /* lag_id+port_index to local_port mapping */ } lag; + struct mlxsw_resources resources; struct mlxsw_hwmon *hwmon; unsigned long driver_priv[0]; /* driver_priv has to be always the last item */ @@ -1110,7 +1111,8 @@ int mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info, } } - err = mlxsw_bus->init(bus_priv, mlxsw_core, mlxsw_driver->profile); + err = mlxsw_bus->init(bus_priv, mlxsw_core, mlxsw_driver->profile, + &mlxsw_core->resources); if (err) goto err_bus_init; @@ -1652,6 +1654,12 @@ void mlxsw_core_lag_mapping_clear(struct mlxsw_core *mlxsw_core, } EXPORT_SYMBOL(mlxsw_core_lag_mapping_clear); +struct mlxsw_resources *mlxsw_core_resources_get(struct mlxsw_core *mlxsw_core) +{ + return &mlxsw_core->resources; +} +EXPORT_SYMBOL(mlxsw_core_resources_get); + int mlxsw_core_port_init(struct mlxsw_core *mlxsw_core, struct mlxsw_core_port *mlxsw_core_port, u8 local_port, struct net_device *dev, bool split, u32 split_group) diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.h b/drivers/net/ethernet/mellanox/mlxsw/core.h index 2fe385c..d57ad0d 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/core.h +++ b/drivers/net/ethernet/mellanox/mlxsw/core.h @@ -215,6 +215,7 @@ struct mlxsw_config_profile { u32 kvd_linear_size; u32 kvd_hash_single_size; u32 kvd_hash_double_size; + u8 resource_query_enable; struct mlxsw_swid_config swid_config[MLXSW_CONFIG_PROFILE_SWID_COUNT]; }; @@ -266,10 +267,16 @@ struct mlxsw_driver { const struct mlxsw_config_profile *profile; }; +struct mlxsw_resources { +}; + +struct mlxsw_resources *mlxsw_core_resources_get(struct mlxsw_core *mlxsw_core); + struct mlxsw_bus { const char *kind; int (*init)(void *bus_priv, struct mlxsw_core *mlxsw_core, - const struct mlxsw_config_profile *profile); + const struct mlxsw_config_profile *profile, + struct mlxsw_resources *resources); void (*fini)(void *bus_priv); bool (*skb_transmit_busy)(void *bus_priv, const struct mlxsw_tx_info *tx_info); diff --git a/drivers/net/ethernet/mellanox/mlxsw/pci.c b/drivers/net/ethernet/mellanox/mlxsw/pci.c index ddbc9f2..a724b66 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/pci.c +++ b/drivers/net/ethernet/mellanox/mlxsw/pci.c @@ -1154,6 +1154,56 @@ mlxsw_pci_config_profile_swid_config(struct mlxsw_pci *mlxsw_pci, mlxsw_cmd_mbox_config_profile_swid_config_mask_set(mbox, index, mask); } +#define MLXSW_RESOURCES_TABLE_END_ID 0xffff +#define MLXSW_RESOURCES_QUERY_MAX_QUERIES 100 +#define MLXSW_RESOURCES_PER_QUERY 32 + +static void mlxsw_pci_resources_query_parse(int id, u64 val, + struct mlxsw_resources *resources) +{ + switch (id) { + default: + break; + } +} + +static int mlxsw_pci_resources_query(struct mlxsw_pci *mlxsw_pci, char *mbox, + struct mlxsw_resources *resources, + u8 query_enabled) +{ + int index, i; + u64 data; + u16 id; + int err; + + /* Not all the versions support resources query */ + if (!query_enabled) + return 0; + + mlxsw_cmd_mbox_zero(mbox); + + for (index = 0; index < MLXSW_RESOURCES_QUERY_MAX_QUERIES; index++) { + err = mlxsw_cmd_query_resources(mlxsw_pci->core, mbox, index); + if (err) + return err; + + for (i = 0; i < MLXSW_RESOURCES_PER_QUERY; i++) { + id = mlxsw_cmd_mbox_query_resource_id_get(mbox, i); + data = mlxsw_cmd_mbox_query_resource_data_get(mbox, i); + + if (id == MLXSW_RESOURCES_TABLE_END_ID) + return 0; + + mlxsw_pci_resources_query_parse(id, data, resources); + } + } + + /* If after MLXSW_RESOURCES_QUERY_MAX_QUERIES we still didn't get + * MLXSW_RESOURCES_TABLE_END_ID, something went bad in the FW. + */ + return -EIO; +} + static int mlxsw_pci_config_profile(struct mlxsw_pci *mlxsw_pci, char *mbox, const struct mlxsw_config_profile *profile) { @@ -1404,7 +1454,8 @@ static void mlxsw_pci_mbox_free(struct mlxsw_pci *mlxsw_pci, } static int mlxsw_pci_init(void *bus_priv, struct mlxsw_core *mlxsw_core, - const struct mlxsw_config_profile *profile) + const struct mlxsw_config_profile *profile, + struct mlxsw_resources *resources) { struct mlxsw_pci *mlxsw_pci = bus_priv; struct pci_dev *pdev = mlxsw_pci->pdev; @@ -1463,6 +1514,11 @@ static int mlxsw_pci_init(void *bus_priv, struct mlxsw_core *mlxsw_core, if (err) goto err_boardinfo; + err = mlxsw_pci_resources_query(mlxsw_pci, mbox, resources, + profile->resource_query_enable); + if (err) + goto err_query_resources; + err = mlxsw_pci_config_profile(mlxsw_pci, mbox, profile); if (err) goto err_config_profile; @@ -1485,6 +1541,7 @@ err_request_eq_irq: mlxsw_pci_aqs_fini(mlxsw_pci); err_aqs_init: err_config_profile: +err_query_resources: err_boardinfo: mlxsw_pci_fw_area_fini(mlxsw_pci); err_fw_area_init: diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c index 2ba8cc4..80172fc 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c @@ -2488,6 +2488,7 @@ static struct mlxsw_config_profile mlxsw_sp_config_profile = { .type = MLXSW_PORT_SWID_TYPE_ETH, } }, + .resource_query_enable = 1, }; static struct mlxsw_driver mlxsw_sp_driver = { diff --git a/drivers/net/ethernet/mellanox/mlxsw/switchx2.c b/drivers/net/ethernet/mellanox/mlxsw/switchx2.c index 25f658b..377daa4 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/switchx2.c +++ b/drivers/net/ethernet/mellanox/mlxsw/switchx2.c @@ -1541,6 +1541,7 @@ static struct mlxsw_config_profile mlxsw_sx_config_profile = { .type = MLXSW_PORT_SWID_TYPE_ETH, } }, + .resource_query_enable = 0, }; static struct mlxsw_driver mlxsw_sx_driver = {