diff options
Diffstat (limited to 'drivers/net/bnx2x/bnx2x_sp.c')
| -rw-r--r-- | drivers/net/bnx2x/bnx2x_sp.c | 5692 |
1 files changed, 5692 insertions, 0 deletions
diff --git a/drivers/net/bnx2x/bnx2x_sp.c b/drivers/net/bnx2x/bnx2x_sp.c new file mode 100644 index 000000000000..df52f110c6c5 --- /dev/null +++ b/drivers/net/bnx2x/bnx2x_sp.c @@ -0,0 +1,5692 @@ +/* bnx2x_sp.c: Broadcom Everest network driver. + * + * Copyright 2011 Broadcom Corporation + * + * Unless you and Broadcom execute a separate written software license + * agreement governing use of this software, this software is licensed to you + * under the terms of the GNU General Public License version 2, available + * at http://www.gnu.org/licenses/old-licenses/gpl-2.0.html (the "GPL"). + * + * Notwithstanding the above, under no circumstances may you combine this + * software in any way with any other Broadcom software provided under a + * license other than the GPL, without Broadcom's express prior written + * consent. + * + * Maintained by: Eilon Greenstein <eilong@broadcom.com> + * Written by: Vladislav Zolotarov + * + */ +#include <linux/module.h> +#include <linux/crc32.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/crc32c.h> +#include "bnx2x.h" +#include "bnx2x_cmn.h" +#include "bnx2x_sp.h" + +#define BNX2X_MAX_EMUL_MULTI 16 + +/**** Exe Queue interfaces ****/ + +/** + * bnx2x_exe_queue_init - init the Exe Queue object + * + * @o: poiter to the object + * @exe_len: length + * @owner: poiter to the owner + * @validate: validate function pointer + * @optimize: optimize function pointer + * @exec: execute function pointer + * @get: get function pointer + */ +static inline void bnx2x_exe_queue_init(struct bnx2x *bp, + struct bnx2x_exe_queue_obj *o, + int exe_len, + union bnx2x_qable_obj *owner, + exe_q_validate validate, + exe_q_optimize optimize, + exe_q_execute exec, + exe_q_get get) +{ + memset(o, 0, sizeof(*o)); + + INIT_LIST_HEAD(&o->exe_queue); + INIT_LIST_HEAD(&o->pending_comp); + + spin_lock_init(&o->lock); + + o->exe_chunk_len = exe_len; + o->owner = owner; + + /* Owner specific callbacks */ + o->validate = validate; + o->optimize = optimize; + o->execute = exec; + o->get = get; + + DP(BNX2X_MSG_SP, "Setup the execution queue with the chunk " + "length of %d\n", exe_len); +} + +static inline void bnx2x_exe_queue_free_elem(struct bnx2x *bp, + struct bnx2x_exeq_elem *elem) +{ + DP(BNX2X_MSG_SP, "Deleting an exe_queue element\n"); + kfree(elem); +} + +static inline int bnx2x_exe_queue_length(struct bnx2x_exe_queue_obj *o) +{ + struct bnx2x_exeq_elem *elem; + int cnt = 0; + + spin_lock_bh(&o->lock); + + list_for_each_entry(elem, &o->exe_queue, link) + cnt++; + + spin_unlock_bh(&o->lock); + + return cnt; +} + +/** + * bnx2x_exe_queue_add - add a new element to the execution queue + * + * @bp: driver handle + * @o: queue + * @cmd: new command to add + * @restore: true - do not optimize the command + * + * If the element is optimized or is illegal, frees it. + */ +static inline int bnx2x_exe_queue_add(struct bnx2x *bp, + struct bnx2x_exe_queue_obj *o, + struct bnx2x_exeq_elem *elem, + bool restore) +{ + int rc; + + spin_lock_bh(&o->lock); + + if (!restore) { + /* Try to cancel this element queue */ + rc = o->optimize(bp, o->owner, elem); + if (rc) + goto free_and_exit; + + /* Check if this request is ok */ + rc = o->validate(bp, o->owner, elem); + if (rc) { + BNX2X_ERR("Preamble failed: %d\n", rc); + goto free_and_exit; + } + } + + /* If so, add it to the execution queue */ + list_add_tail(&elem->link, &o->exe_queue); + + spin_unlock_bh(&o->lock); + + return 0; + +free_and_exit: + bnx2x_exe_queue_free_elem(bp, elem); + + spin_unlock_bh(&o->lock); + + return rc; + +} + +static inline void __bnx2x_exe_queue_reset_pending( + struct bnx2x *bp, + struct bnx2x_exe_queue_obj *o) +{ + struct bnx2x_exeq_elem *elem; + + while (!list_empty(&o->pending_comp)) { + elem = list_first_entry(&o->pending_comp, + struct bnx2x_exeq_elem, link); + + list_del(&elem->link); + bnx2x_exe_queue_free_elem(bp, elem); + } +} + +static inline void bnx2x_exe_queue_reset_pending(struct bnx2x *bp, + struct bnx2x_exe_queue_obj *o) +{ + + spin_lock_bh(&o->lock); + + __bnx2x_exe_queue_reset_pending(bp, o); + + spin_unlock_bh(&o->lock); + +} + +/** + * bnx2x_exe_queue_step - execute one execution chunk atomically + * + * @bp: driver handle + * @o: queue + * @ramrod_flags: flags + * + * (Atomicy is ensured using the exe_queue->lock). + */ +static inline int bnx2x_exe_queue_step(struct bnx2x *bp, + struct bnx2x_exe_queue_obj *o, + unsigned long *ramrod_flags) +{ + struct bnx2x_exeq_elem *elem, spacer; + int cur_len = 0, rc; + + memset(&spacer, 0, sizeof(spacer)); + + spin_lock_bh(&o->lock); + + /* + * Next step should not be performed until the current is finished, + * unless a DRV_CLEAR_ONLY bit is set. In this case we just want to + * properly clear object internals without sending any command to the FW + * which also implies there won't be any completion to clear the + * 'pending' list. + */ + if (!list_empty(&o->pending_comp)) { + if (test_bit(RAMROD_DRV_CLR_ONLY, ramrod_flags)) { + DP(BNX2X_MSG_SP, "RAMROD_DRV_CLR_ONLY requested: " + "resetting pending_comp\n"); + __bnx2x_exe_queue_reset_pending(bp, o); + } else { + spin_unlock_bh(&o->lock); + return 1; + } + } + + /* + * Run through the pending commands list and create a next + * execution chunk. + */ + while (!list_empty(&o->exe_queue)) { + elem = list_first_entry(&o->exe_queue, struct bnx2x_exeq_elem, + link); + WARN_ON(!elem->cmd_len); + + if (cur_len + elem->cmd_len <= o->exe_chunk_len) { + cur_len += elem->cmd_len; + /* + * Prevent from both lists being empty when moving an + * element. This will allow the call of + * bnx2x_exe_queue_empty() without locking. + */ + list_add_tail(&spacer.link, &o->pending_comp); + mb(); + list_del(&elem->link); + list_add_tail(&elem->link, &o->pending_comp); + list_del(&spacer.link); + } else + break; + } + + /* Sanity check */ + if (!cur_len) { + spin_unlock_bh(&o->lock); + return 0; + } + + rc = o->execute(bp, o->owner, &o->pending_comp, ramrod_flags); + if (rc < 0) + /* + * In case of an error return the commands back to the queue + * and reset the pending_comp. + */ + list_splice_init(&o->pending_comp, &o->exe_queue); + else if (!rc) + /* + * If zero is returned, means there are no outstanding pending + * completions and we may dismiss the pending list. + */ + __bnx2x_exe_queue_reset_pending(bp, o); + + spin_unlock_bh(&o->lock); + return rc; +} + +static inline bool bnx2x_exe_queue_empty(struct bnx2x_exe_queue_obj *o) +{ + bool empty = list_empty(&o->exe_queue); + + /* Don't reorder!!! */ + mb(); + + return empty && list_empty(&o->pending_comp); +} + +static inline struct bnx2x_exeq_elem *bnx2x_exe_queue_alloc_elem( + struct bnx2x *bp) +{ + DP(BNX2X_MSG_SP, "Allocating a new exe_queue element\n"); + return kzalloc(sizeof(struct bnx2x_exeq_elem), GFP_ATOMIC); +} + +/************************ raw_obj functions ***********************************/ +static bool bnx2x_raw_check_pending(struct bnx2x_raw_obj *o) +{ + return !!test_bit(o->state, o->pstate); +} + +static void bnx2x_raw_clear_pending(struct bnx2x_raw_obj *o) +{ + smp_mb__before_clear_bit(); + clear_bit(o->state, o->pstate); + smp_mb__after_clear_bit(); +} + +static void bnx2x_raw_set_pending(struct bnx2x_raw_obj *o) +{ + smp_mb__before_clear_bit(); + set_bit(o->state, o->pstate); + smp_mb__after_clear_bit(); +} + +/** + * bnx2x_state_wait - wait until the given bit(state) is cleared + * + * @bp: device handle + * @state: state which is to be cleared + * @state_p: state buffer + * + */ +static inline int bnx2x_state_wait(struct bnx2x *bp, int state, + unsigned long *pstate) +{ + /* can take a while if any port is running */ + int cnt = 5000; + + + if (CHIP_REV_IS_EMUL(bp)) + cnt *= 20; + + DP(BNX2X_MSG_SP, "waiting for state to become %d\n", state); + + might_sleep(); + while (cnt--) { + if (!test_bit(state, pstate)) { +#ifdef BNX2X_STOP_ON_ERROR + DP(BNX2X_MSG_SP, "exit (cnt %d)\n", 5000 - cnt); +#endif + return 0; + } + + usleep_range(1000, 1000); + + if (bp->panic) + return -EIO; + } + + /* timeout! */ + BNX2X_ERR("timeout waiting for state %d\n", state); +#ifdef BNX2X_STOP_ON_ERROR + bnx2x_panic(); +#endif + + return -EBUSY; +} + +static int bnx2x_raw_wait(struct bnx2x *bp, struct bnx2x_raw_obj *raw) +{ + return bnx2x_state_wait(bp, raw->state, raw->pstate); +} + +/***************** Classification verbs: Set/Del MAC/VLAN/VLAN-MAC ************/ +/* credit handling callbacks */ +static bool bnx2x_get_cam_offset_mac(struct bnx2x_vlan_mac_obj *o, int *offset) +{ + struct bnx2x_credit_pool_obj *mp = o->macs_pool; + + WARN_ON(!mp); + + return mp->get_entry(mp, offset); +} + +static bool bnx2x_get_credit_mac(struct bnx2x_vlan_mac_obj *o) +{ + struct bnx2x_credit_pool_obj *mp = o->macs_pool; + + WARN_ON(!mp); + + return mp->get(mp, 1); +} + +static bool bnx2x_get_cam_offset_vlan(struct bnx2x_vlan_mac_obj *o, int *offset) +{ + struct bnx2x_credit_pool_obj *vp = o->vlans_pool; + + WARN_ON(!vp); + + return vp->get_entry(vp, offset); +} + +static bool bnx2x_get_credit_vlan(struct bnx2x_vlan_mac_obj *o) +{ + struct bnx2x_credit_pool_obj *vp = o->vlans_pool; + + WARN_ON(!vp); + + return vp->get(vp, 1); +} + +static bool bnx2x_get_credit_vlan_mac(struct bnx2x_vlan_mac_obj *o) +{ + struct bnx2x_credit_pool_obj *mp = o->macs_pool; + struct bnx2x_credit_pool_obj *vp = o->vlans_pool; + + if (!mp->get(mp, 1)) + return false; + + if (!vp->get(vp, 1)) { + mp->put(mp, 1); + return false; + } + + return true; +} + +static bool bnx2x_put_cam_offset_mac(struct bnx2x_vlan_mac_obj *o, int offset) +{ + struct bnx2x_credit_pool_obj *mp = o->macs_pool; + + return mp->put_entry(mp, offset); +} + +static bool bnx2x_put_credit_mac(struct bnx2x_vlan_mac_obj *o) +{ + struct bnx2x_credit_pool_obj *mp = o->macs_pool; + + return mp->put(mp, 1); +} + +static bool bnx2x_put_cam_offset_vlan(struct bnx2x_vlan_mac_obj *o, int offset) +{ + struct bnx2x_credit_pool_obj *vp = o->vlans_pool; + + return vp->put_entry(vp, offset); +} + +static bool bnx2x_put_credit_vlan(struct bnx2x_vlan_mac_obj *o) +{ + struct bnx2x_credit_pool_obj *vp = o->vlans_pool; + + return vp->put(vp, 1); +} + +static bool bnx2x_put_credit_vlan_mac(struct bnx2x_vlan_mac_obj *o) +{ + struct bnx2x_credit_pool_obj *mp = o->macs_pool; + struct bnx2x_credit_pool_obj *vp = o->vlans_pool; + + if (!mp->put(mp, 1)) + return false; + + if (!vp->put(vp, 1)) { + mp->get(mp, 1); + return false; + } + + return true; +} + +/* check_add() callbacks */ +static int bnx2x_check_mac_add(struct bnx2x_vlan_mac_obj *o, + union bnx2x_classification_ramrod_data *data) +{ + struct bnx2x_vlan_mac_registry_elem *pos; + + if (!is_valid_ether_addr(data->mac.mac)) + return -EINVAL; + + /* Check if a requested MAC already exists */ + list_for_each_entry(pos, &o->head, link) + if (!memcmp(data->mac.mac, pos->u.mac.mac, ETH_ALEN)) + return -EEXIST; + + return 0; +} + +static int bnx2x_check_vlan_add(struct bnx2x_vlan_mac_obj *o, + union bnx2x_classification_ramrod_data *data) +{ + struct bnx2x_vlan_mac_registry_elem *pos; + + list_for_each_entry(pos, &o->head, link) + if (data->vlan.vlan == pos->u.vlan.vlan) + return -EEXIST; + + return 0; +} + +static int bnx2x_check_vlan_mac_add(struct bnx2x_vlan_mac_obj *o, + union bnx2x_classification_ramrod_data *data) +{ + struct bnx2x_vlan_mac_registry_elem *pos; + + list_for_each_entry(pos, &o->head, link) + if ((data->vlan_mac.vlan == pos->u.vlan_mac.vlan) && + (!memcmp(data->vlan_mac.mac, pos->u.vlan_mac.mac, + ETH_ALEN))) + return -EEXIST; + + return 0; +} + + +/* check_del() callbacks */ +static struct bnx2x_vlan_mac_registry_elem * + bnx2x_check_mac_del(struct bnx2x_vlan_mac_obj *o, + union bnx2x_classification_ramrod_data *data) +{ + struct bnx2x_vlan_mac_registry_elem *pos; + + list_for_each_entry(pos, &o->head, link) + if (!memcmp(data->mac.mac, pos->u.mac.mac, ETH_ALEN)) + return pos; + + return NULL; +} + +static struct bnx2x_vlan_mac_registry_elem * + bnx2x_check_vlan_del(struct bnx2x_vlan_mac_obj *o, + union bnx2x_classification_ramrod_data *data) +{ + struct bnx2x_vlan_mac_registry_elem *pos; + + list_for_each_entry(pos, &o->head, link) + if (data->vlan.vlan == pos->u.vlan.vlan) + return pos; + + return NULL; +} + +static struct bnx2x_vlan_mac_registry_elem * + bnx2x_check_vlan_mac_del(struct bnx2x_vlan_mac_obj *o, + union bnx2x_classification_ramrod_data *data) +{ + struct bnx2x_vlan_mac_registry_elem *pos; + + list_for_each_entry(pos, &o->head, link) + if ((data->vlan_mac.vlan == pos->u.vlan_mac.vlan) && + (!memcmp(data->vlan_mac.mac, pos->u.vlan_mac.mac, + ETH_ALEN))) + return pos; + + return NULL; +} + +/* check_move() callback */ +static bool bnx2x_check_move(struct bnx2x_vlan_mac_obj *src_o, + struct bnx2x_vlan_mac_obj *dst_o, + union bnx2x_classification_ramrod_data *data) +{ + struct bnx2x_vlan_mac_registry_elem *pos; + int rc; + + /* Check if we can delete the requested configuration from the first + * object. + */ + pos = src_o->check_del(src_o, data); + + /* check if configuration can be added */ + rc = dst_o->check_add(dst_o, data); + + /* If this classification can not be added (is already set) + * or can't be deleted - return an error. + */ + if (rc || !pos) + return false; + + return true; +} + +static bool bnx2x_check_move_always_err( + struct bnx2x_vlan_mac_obj *src_o, + struct bnx2x_vlan_mac_obj *dst_o, + union bnx2x_classification_ramrod_data *data) +{ + return false; +} + + +static inline u8 bnx2x_vlan_mac_get_rx_tx_flag(struct bnx2x_vlan_mac_obj *o) +{ + struct bnx2x_raw_obj *raw = &o->raw; + u8 rx_tx_flag = 0; + + if ((raw->obj_type == BNX2X_OBJ_TYPE_TX) || + (raw->obj_type == BNX2X_OBJ_TYPE_RX_TX)) + rx_tx_flag |= ETH_CLASSIFY_CMD_HEADER_TX_CMD; + + if ((raw->obj_type == BNX2X_OBJ_TYPE_RX) || + (raw->obj_type == BNX2X_OBJ_TYPE_RX_TX)) + rx_tx_flag |= ETH_CLASSIFY_CMD_HEADER_RX_CMD; + + return rx_tx_flag; +} + +/* LLH CAM line allocations */ +enum { + LLH_CAM_ISCSI_ETH_LINE = 0, + LLH_CAM_ETH_LINE, + LLH_CAM_MAX_PF_LINE = NIG_REG_LLH1_FUNC_MEM_SIZE / 2 +}; + +static inline void bnx2x_set_mac_in_nig(struct bnx2x *bp, + bool add, unsigned char *dev_addr, int index) +{ + u32 wb_data[2]; + u32 reg_offset = BP_PORT(bp) ? NIG_REG_LLH1_FUNC_MEM : + NIG_REG_LLH0_FUNC_MEM; + + if (!IS_MF_SI(bp) || index > LLH_CAM_MAX_PF_LINE) + return; + + DP(BNX2X_MSG_SP, "Going to %s LLH configuration at entry %d\n", + (add ? "ADD" : "DELETE"), index); + + if (add) { + /* LLH_FUNC_MEM is a u64 WB register */ + reg_offset += 8*index; + + wb_data[0] = ((dev_addr[2] << 24) | (dev_addr[3] << 16) | + (dev_addr[4] << 8) | dev_addr[5]); + wb_data[1] = ((dev_addr[0] << 8) | dev_addr[1]); + + REG_WR_DMAE(bp, reg_offset, wb_data, 2); + } + + REG_WR(bp, (BP_PORT(bp) ? NIG_REG_LLH1_FUNC_MEM_ENABLE : + NIG_REG_LLH0_FUNC_MEM_ENABLE) + 4*index, add); +} + +/** + * bnx2x_vlan_mac_set_cmd_hdr_e2 - set a header in a single classify ramrod + * + * @bp: device handle + * @o: queue for which we want to configure this rule + * @add: if true the command is an ADD command, DEL otherwise + * @opcode: CLASSIFY_RULE_OPCODE_XXX + * @hdr: pointer to a header to setup + * + */ +static inline void bnx2x_vlan_mac_set_cmd_hdr_e2(struct bnx2x *bp, + struct bnx2x_vlan_mac_obj *o, bool add, int opcode, + struct eth_classify_cmd_header *hdr) +{ + struct bnx2x_raw_obj *raw = &o->raw; + + hdr->client_id = raw->cl_id; + hdr->func_id = raw->func_id; + + /* Rx or/and Tx (internal switching) configuration ? */ + hdr->cmd_general_data |= + bnx2x_vlan_mac_get_rx_tx_flag(o); + + if (add) + hdr->cmd_general_data |= ETH_CLASSIFY_CMD_HEADER_IS_ADD; + + hdr->cmd_general_data |= + (opcode << ETH_CLASSIFY_CMD_HEADER_OPCODE_SHIFT); +} + +/** + * bnx2x_vlan_mac_set_rdata_hdr_e2 - set the classify ramrod data header + * + * @cid: connection id + * @type: BNX2X_FILTER_XXX_PENDING + * @hdr: poiter to header to setup + * @rule_cnt: + * + * currently we always configure one rule and echo field to contain a CID and an + * opcode type. + */ +static inline void bnx2x_vlan_mac_set_rdata_hdr_e2(u32 cid, int type, + struct eth_classify_header *hdr, int rule_cnt) +{ + hdr->echo = (cid & BNX2X_SWCID_MASK) | (type << BNX2X_SWCID_SHIFT); + hdr->rule_cnt = (u8)rule_cnt; +} + + +/* hw_config() callbacks */ +static void bnx2x_set_one_mac_e2(struct bnx2x *bp, + struct bnx2x_vlan_mac_obj *o, + struct bnx2x_exeq_elem *elem, int rule_idx, + int cam_offset) +{ + struct bnx2x_raw_obj *raw = &o->raw; + struct eth_classify_rules_ramrod_data *data = + (struct eth_classify_rules_ramrod_data *)(raw->rdata); + int rule_cnt = rule_idx + 1, cmd = elem->cmd_data.vlan_mac.cmd; + union eth_classify_rule_cmd *rule_entry = &data->rules[rule_idx]; + bool add = (cmd == BNX2X_VLAN_MAC_ADD) ? true : false; + unsigned long *vlan_mac_flags = &elem->cmd_data.vlan_mac.vlan_mac_flags; + u8 *mac = elem->cmd_data.vlan_mac.u.mac.mac; + + /* + * Set LLH CAM entry: currently only iSCSI and ETH macs are + * relevant. In addition, current implementation is tuned for a + * single ETH MAC. + * + * When multiple unicast ETH MACs PF configuration in switch + * independent mode is required (NetQ, multiple netdev MACs, + * etc.), consider better utilisation of 8 per function MAC + * entries in the LLH register. There is also + * NIG_REG_P[01]_LLH_FUNC_MEM2 registers that complete the + * total number of CAM entries to 16. + * + * Currently we won't configure NIG for MACs other than a primary ETH + * MAC and iSCSI L2 MAC. + * + * If this MAC is moving from one Queue to another, no need to change + * NIG configuration. + */ + if (cmd != BNX2X_VLAN_MAC_MOVE) { + if (test_bit(BNX2X_ISCSI_ETH_MAC, vlan_mac_flags)) + bnx2x_set_mac_in_nig(bp, add, mac, + LLH_CAM_ISCSI_ETH_LINE); + else if (test_bit(BNX2X_ETH_MAC, vlan_mac_flags)) + bnx2x_set_mac_in_nig(bp, add, mac, LLH_CAM_ETH_LINE); + } + + /* Reset the ramrod data buffer for the first rule */ + if (rule_idx == 0) + memset(data, 0, sizeof(*data)); + + /* Setup a command header */ + bnx2x_vlan_mac_set_cmd_hdr_e2(bp, o, add, CLASSIFY_RULE_OPCODE_MAC, + &rule_entry->mac.header); + + DP(BNX2X_MSG_SP, "About to %s MAC "BNX2X_MAC_FMT" for " + "Queue %d\n", (add ? "add" : "delete"), + BNX2X_MAC_PRN_LIST(mac), raw->cl_id); + + /* Set a MAC itself */ + bnx2x_set_fw_mac_addr(&rule_entry->mac.mac_msb, + &rule_entry->mac.mac_mid, + &rule_entry->mac.mac_lsb, mac); + + /* MOVE: Add a rule that will add this MAC to the target Queue */ + if (cmd == BNX2X_VLAN_MAC_MOVE) { + rule_entry++; + rule_cnt++; + + /* Setup ramrod data */ + bnx2x_vlan_mac_set_cmd_hdr_e2(bp, + elem->cmd_data.vlan_mac.target_obj, + true, CLASSIFY_RULE_OPCODE_MAC, + &rule_entry->mac.header); + + /* Set a MAC itself */ + bnx2x_set_fw_mac_addr(&rule_entry->mac.mac_msb, + &rule_entry->mac.mac_mid, + &rule_entry->mac.mac_lsb, mac); + } + + /* Set the ramrod data header */ + /* TODO: take this to the higher level in order to prevent multiple + writing */ + bnx2x_vlan_mac_set_rdata_hdr_e2(raw->cid, raw->state, &data->header, + rule_cnt); +} + +/** + * bnx2x_vlan_mac_set_rdata_hdr_e1x - set a header in a single classify ramrod + * + * @bp: device handle + * @o: queue + * @type: + * @cam_offset: offset in cam memory + * @hdr: pointer to a header to setup + * + * E1/E1H + */ +static inline void bnx2x_vlan_mac_set_rdata_hdr_e1x(struct bnx2x *bp, + struct bnx2x_vlan_mac_obj *o, int type, int cam_offset, + struct mac_configuration_hdr *hdr) +{ + struct bnx2x_raw_obj *r = &o->raw; + + hdr->length = 1; + hdr->offset = (u8)cam_offset; + hdr->client_id = 0xff; + hdr->echo = ((r->cid & BNX2X_SWCID_MASK) | (type << BNX2X_SWCID_SHIFT)); +} + +static inline void bnx2x_vlan_mac_set_cfg_entry_e1x(struct bnx2x *bp, + struct bnx2x_vlan_mac_obj *o, bool add, int opcode, u8 *mac, + u16 vlan_id, struct mac_configuration_entry *cfg_entry) +{ + struct bnx2x_raw_obj *r = &o->raw; + u32 cl_bit_vec = (1 << r->cl_id); + + cfg_entry->clients_bit_vector = cpu_to_le32(cl_bit_vec); + cfg_entry->pf_id = r->func_id; + cfg_entry->vlan_id = cpu_to_le16(vlan_id); + + if (add) { + SET_FLAG(cfg_entry->flags, MAC_CONFIGURATION_ENTRY_ACTION_TYPE, + T_ETH_MAC_COMMAND_SET); + SET_FLAG(cfg_entry->flags, + MAC_CONFIGURATION_ENTRY_VLAN_FILTERING_MODE, opcode); + + /* Set a MAC in a ramrod data */ + bnx2x_set_fw_mac_addr(&cfg_entry->msb_mac_addr, + &cfg_entry->middle_mac_addr, + &cfg_entry->lsb_mac_addr, mac); + } else + SET_FLAG(cfg_entry->flags, MAC_CONFIGURATION_ENTRY_ACTION_TYPE, + T_ETH_MAC_COMMAND_INVALIDATE); +} + +static inline void bnx2x_vlan_mac_set_rdata_e1x(struct bnx2x *bp, + struct bnx2x_vlan_mac_obj *o, int type, int cam_offset, bool add, + u8 *mac, u16 vlan_id, int opcode, struct mac_configuration_cmd *config) +{ + struct mac_configuration_entry *cfg_entry = &config->config_table[0]; + struct bnx2x_raw_obj *raw = &o->raw; + + bnx2x_vlan_mac_set_rdata_hdr_e1x(bp, o, type, cam_offset, + &config->hdr); + bnx2x_vlan_mac_set_cfg_entry_e1x(bp, o, add, opcode, mac, vlan_id, + cfg_entry); + + DP(BNX2X_MSG_SP, "%s MAC "BNX2X_MAC_FMT" CLID %d CAM offset %d\n", + (add ? "setting" : "clearing"), + BNX2X_MAC_PRN_LIST(mac), raw->cl_id, cam_offset); +} + +/** + * bnx2x_set_one_mac_e1x - fill a single MAC rule ramrod data + * + * @bp: device handle + * @o: bnx2x_vlan_mac_obj + * @elem: bnx2x_exeq_elem + * @rule_idx: rule_idx + * @cam_offset: cam_offset + */ +static void bnx2x_set_one_mac_e1x(struct bnx2x *bp, + struct bnx2x_vlan_mac_obj *o, + struct bnx2x_exeq_elem *elem, int rule_idx, + int cam_offset) +{ + struct bnx2x_raw_obj *raw = &o->raw; + struct mac_configuration_cmd *config = + (struct mac_configuration_cmd *)(raw->rdata); + /* + * 57710 and 57711 do not support MOVE command, + * so it's either ADD or DEL + */ + bool add = (elem->cmd_data.vlan_mac.cmd == BNX2X_VLAN_MAC_ADD) ? + true : false; + + /* Reset the ramrod data buffer */ + memset(config, 0, sizeof(*config)); + + bnx2x_vlan_mac_set_rdata_e1x(bp, o, BNX2X_FILTER_MAC_PENDING, + cam_offset, add, + elem->cmd_data.vlan_mac.u.mac.mac, 0, + ETH_VLAN_FILTER_ANY_VLAN, config); +} + +static void bnx2x_set_one_vlan_e2(struct bnx2x *bp, + struct bnx2x_vlan_mac_obj *o, + struct bnx2x_exeq_elem *elem, int rule_idx, + int cam_offset) +{ + struct bnx2x_raw_obj *raw = &o->raw; + struct eth_classify_rules_ramrod_data *data = + (struct eth_classify_rules_ramrod_data *)(raw->rdata); + int rule_cnt = rule_idx + 1; + union eth_classify_rule_cmd *rule_entry = &data->rules[rule_idx]; + int cmd = elem->cmd_data.vlan_mac.cmd; + bool add = (cmd == BNX2X_VLAN_MAC_ADD) ? true : false; + u16 vlan = elem->cmd_data.vlan_mac.u.vlan.vlan; + + /* Reset the ramrod data buffer for the first rule */ + if (rule_idx == 0) + memset(data, 0, sizeof(*data)); + + /* Set a rule header */ + bnx2x_vlan_mac_set_cmd_hdr_e2(bp, o, add, CLASSIFY_RULE_OPCODE_VLAN, + &rule_entry->vlan.header); + + DP(BNX2X_MSG_SP, "About to %s VLAN %d\n", (add ? "add" : "delete"), + vlan); + + /* Set a VLAN itself */ + rule_entry->vlan.vlan = cpu_to_le16(vlan); + + /* MOVE: Add a rule that will add this MAC to the target Queue */ + if (cmd == BNX2X_VLAN_MAC_MOVE) { + rule_entry++; + rule_cnt++; + + /* Setup ramrod data */ + bnx2x_vlan_mac_set_cmd_hdr_e2(bp, + elem->cmd_data.vlan_mac.target_obj, + true, CLASSIFY_RULE_OPCODE_VLAN, + &rule_entry->vlan.header); + + /* Set a VLAN itself */ + rule_entry->vlan.vlan = cpu_to_le16(vlan); + } + + /* Set the ramrod data header */ + /* TODO: take this to the higher level in order to prevent multiple + writing */ + bnx2x_vlan_mac_set_rdata_hdr_e2(raw->cid, raw->state, &data->header, + rule_cnt); +} + +static void bnx2x_set_one_vlan_mac_e2(struct bnx2x *bp, + struct bnx2x_vlan_mac_obj *o, + struct bnx2x_exeq_elem *elem, + int rule_idx, int cam_offset) +{ + struct bnx2x_raw_obj *raw = &o->raw; + struct eth_classify_rules_ramrod_data *data = + (struct eth_classify_rules_ramrod_data *)(raw->rdata); + int rule_cnt = rule_idx + 1; + union eth_classify_rule_cmd *rule_entry = &data->rules[rule_idx]; + int cmd = elem->cmd_data.vlan_mac.cmd; + bool add = (cmd == BNX2X_VLAN_MAC_ADD) ? true : false; + u16 vlan = elem->cmd_data.vlan_mac.u.vlan_mac.vlan; + u8 *mac = elem->cmd_data.vlan_mac.u.vlan_mac.mac; + + + /* Reset the ramrod data buffer for the first rule */ + if (rule_idx == 0) + memset(data, 0, sizeof(*data)); + + /* Set a rule header */ + bnx2x_vlan_mac_set_cmd_hdr_e2(bp, o, add, CLASSIFY_RULE_OPCODE_PAIR, + &rule_entry->pair.header); + + /* Set VLAN and MAC themselvs */ + rule_entry->pair.vlan = cpu_to_le16(vlan); + bnx2x_set_fw_mac_addr(&rule_entry->pair.mac_msb, + &rule_entry->pair.mac_mid, + &rule_entry->pair.mac_lsb, mac); + + /* MOVE: Add a rule that will add this MAC to the target Queue */ + if (cmd == BNX2X_VLAN_MAC_MOVE) { + rule_entry++; + rule_cnt++; + + /* Setup ramrod data */ + bnx2x_vlan_mac_set_cmd_hdr_e2(bp, + elem->cmd_data.vlan_mac.target_obj, + true, CLASSIFY_RULE_OPCODE_PAIR, + &rule_entry->pair.header); + + /* Set a VLAN itself */ + rule_entry->pair.vlan = cpu_to_le16(vlan); + bnx2x_set_fw_mac_addr(&rule_entry->pair.mac_msb, + &rule_entry->pair.mac_mid, + &rule_entry->pair.mac_lsb, mac); + } + + /* Set the ramrod data header */ + /* TODO: take this to the higher level in order to prevent multiple + writing */ + bnx2x_vlan_mac_set_rdata_hdr_e2(raw->cid, raw->state, &data->header, + rule_cnt); +} + +/** + * bnx2x_set_one_vlan_mac_e1h - + * + * @bp: device handle + * @o: bnx2x_vlan_mac_obj + * @elem: bnx2x_exeq_elem + * @rule_idx: rule_idx + * @cam_offset: cam_offset + */ +static void bnx2x_set_one_vlan_mac_e1h(struct bnx2x *bp, + struct bnx2x_vlan_mac_obj *o, + struct bnx2x_exeq_elem *elem, + int rule_idx, int cam_offset) +{ + struct bnx2x_raw_obj *raw = &o->raw; + struct mac_configuration_cmd *config = + (struct mac_configuration_cmd *)(raw->rdata); + /* + * 57710 and 57711 do not support MOVE command, + * so it's either ADD or DEL + */ + bool add = (elem->cmd_data.vlan_mac.cmd == BNX2X_VLAN_MAC_ADD) ? + true : false; + + /* Reset the ramrod data buffer */ + memset(config, 0, sizeof(*config)); + + bnx2x_vlan_mac_set_rdata_e1x(bp, o, BNX2X_FILTER_VLAN_MAC_PENDING, + cam_offset, add, + elem->cmd_data.vlan_mac.u.vlan_mac.mac, + elem->cmd_data.vlan_mac.u.vlan_mac.vlan, + ETH_VLAN_FILTER_CLASSIFY, config); +} + +#define list_next_entry(pos, member) \ + list_entry((pos)->member.next, typeof(*(pos)), member) + +/** + * bnx2x_vlan_mac_restore - reconfigure next MAC/VLAN/VLAN-MAC element + * + * @bp: device handle + * @p: command parameters + * @ppos: pointer to the cooky + * + * reconfigure next MAC/VLAN/VLAN-MAC element from the + * previously configured elements list. + * + * from command parameters only RAMROD_COMP_WAIT bit in ramrod_flags is taken + * into an account + * + * pointer to the cooky - that should be given back in the next call to make + * function handle the next element. If *ppos is set to NULL it will restart the + * iterator. If returned *ppos == NULL this means that the last element has been + * handled. + * + */ +static int bnx2x_vlan_mac_restore(struct bnx2x *bp, + struct bnx2x_vlan_mac_ramrod_params *p, + struct bnx2x_vlan_mac_registry_elem **ppos) +{ + struct bnx2x_vlan_mac_registry_elem *pos; + struct bnx2x_vlan_mac_obj *o = p->vlan_mac_obj; + + /* If list is empty - there is nothing to do here */ + if (list_empty(&o->head)) { + *ppos = NULL; + return 0; + } + + /* make a step... */ + if (*ppos == NULL) + *ppos = list_first_entry(&o->head, + struct bnx2x_vlan_mac_registry_elem, + link); + else + *ppos = list_next_entry(*ppos, link); + + pos = *ppos; + + /* If it's the last step - return NULL */ + if (list_is_last(&pos->link, &o->head)) + *ppos = NULL; + + /* Prepare a 'user_req' */ + memcpy(&p->user_req.u, &pos->u, sizeof(pos->u)); + + /* Set the command */ + p->user_req.cmd = BNX2X_VLAN_MAC_ADD; + + /* Set vlan_mac_flags */ + p->user_req.vlan_mac_flags = pos->vlan_mac_flags; + + /* Set a restore bit */ + __set_bit(RAMROD_RESTORE, &p->ramrod_flags); + + return bnx2x_config_vlan_mac(bp, p); +} + +/* + * bnx2x_exeq_get_mac/bnx2x_exeq_get_vlan/bnx2x_exeq_get_vlan_mac return a + * pointer to an element with a specific criteria and NULL if such an element + * hasn't been found. + */ +static struct bnx2x_exeq_elem *bnx2x_exeq_get_mac( + struct bnx2x_exe_queue_obj *o, + struct bnx2x_exeq_elem *elem) +{ + struct bnx2x_exeq_elem *pos; + struct bnx2x_mac_ramrod_data *data = &elem->cmd_data.vlan_mac.u.mac; + + /* Check pending for execution commands */ + list_for_each_entry(pos, &o->exe_queue, link) + if (!memcmp(&pos->cmd_data.vlan_mac.u.mac, data, + sizeof(*data)) && + (pos->cmd_data.vlan_mac.cmd == elem->cmd_data.vlan_mac.cmd)) + return pos; + + return NULL; +} + +static struct bnx2x_exeq_elem *bnx2x_exeq_get_vlan( + struct bnx2x_exe_queue_obj *o, + struct bnx2x_exeq_elem *elem) +{ + struct bnx2x_exeq_elem *pos; + struct bnx2x_vlan_ramrod_data *data = &elem->cmd_data.vlan_mac.u.vlan; + + /* Check pending for execution commands */ + list_for_each_entry(pos, &o->exe_queue, link) + if (!memcmp(&pos->cmd_data.vlan_mac.u.vlan, data, + sizeof(*data)) && + (pos->cmd_data.vlan_mac.cmd == elem->cmd_data.vlan_mac.cmd)) + return pos; + + return NULL; +} + +static struct bnx2x_exeq_elem *bnx2x_exeq_get_vlan_mac( + struct bnx2x_exe_queue_obj *o, + struct bnx2x_exeq_elem *elem) +{ + struct bnx2x_exeq_elem *pos; + struct bnx2x_vlan_mac_ramrod_data *data = + &elem->cmd_data.vlan_mac.u.vlan_mac; + + /* Check pending for execution commands */ + list_for_each_entry(pos, &o->exe_queue, link) + if (!memcmp(&pos->cmd_data.vlan_mac.u.vlan_mac, data, + sizeof(*data)) && + (pos->cmd_data.vlan_mac.cmd == elem->cmd_data.vlan_mac.cmd)) + return pos; + + return NULL; +} + +/** + * bnx2x_validate_vlan_mac_add - check if an ADD command can be executed + * + * @bp: device handle + * @qo: bnx2x_qable_obj + * @elem: bnx2x_exeq_elem + * + * Checks that the requested configuration can be added. If yes and if + * requested, consume CAM credit. + * + * The 'validate' is run after the 'optimize'. + * + */ +static inline int bnx2x_validate_vlan_mac_add(struct bnx2x *bp, + union bnx2x_qable_obj *qo, + struct bnx2x_exeq_elem *elem) +{ + struct bnx2x_vlan_mac_obj *o = &qo->vlan_mac; + struct bnx2x_exe_queue_obj *exeq = &o->exe_queue; + int rc; + + /* Check the registry */ + rc = o->check_add(o, &elem->cmd_data.vlan_mac.u); + if (rc) { + DP(BNX2X_MSG_SP, "ADD command is not allowed considering " + "current registry state\n"); + return rc; + } + + /* + * Check if there is a pending ADD command for this + * MAC/VLAN/VLAN-MAC. Return an error if there is. + */ + if (exeq->get(exeq, elem)) { + DP(BNX2X_MSG_SP, "There is a pending ADD command already\n"); + return -EEXIST; + } + + /* + * TODO: Check the pending MOVE from other objects where this + * object is a destination object. + */ + + /* Consume the credit if not requested not to */ + if (!(test_bit(BNX2X_DONT_CONSUME_CAM_CREDIT, + &elem->cmd_data.vlan_mac.vlan_mac_flags) || + o->get_credit(o))) + return -EINVAL; + + return 0; +} + +/** + * bnx2x_validate_vlan_mac_del - check if the DEL command can be executed + * + * @bp: device handle + * @qo: quable object to check + * @elem: element that needs to be deleted + * + * Checks that the requested configuration can be deleted. If yes and if + * requested, returns a CAM credit. + * + * The 'validate' is run after the 'optimize'. + */ +static inline int bnx2x_validate_vlan_mac_del(struct bnx2x *bp, + union bnx2x_qable_obj *qo, + struct bnx2x_exeq_elem *elem) +{ + struct bnx2x_vlan_mac_obj *o = &qo->vlan_mac; + struct bnx2x_vlan_mac_registry_elem *pos; + struct bnx2x_exe_queue_obj *exeq = &o->exe_queue; + struct bnx2x_exeq_elem query_elem; + + /* If this classification can not be deleted (doesn't exist) + * - return a BNX2X_EXIST. + */ + pos = o->check_del(o, &elem->cmd_data.vlan_mac.u); + if (!pos) { + DP(BNX2X_MSG_SP, "DEL command is not allowed considering " + "current registry state\n"); + return -EEXIST; + } + + /* + * Check if there are pending DEL or MOVE commands for this + * MAC/VLAN/VLAN-MAC. Return an error if so. + */ + memcpy(&query_elem, elem, sizeof(query_elem)); + + /* Check for MOVE commands */ + query_elem.cmd_data.vlan_mac.cmd = BNX2X_VLAN_MAC_MOVE; + if (exeq->get(exeq, &query_elem)) { + BNX2X_ERR("There is a pending MOVE command already\n"); + return -EINVAL; + } + + /* Check for DEL commands */ + if (exeq->get(exeq, elem)) { + DP(BNX2X_MSG_SP, "There is a pending DEL command already\n"); + return -EEXIST; + } + + /* Return the credit to the credit pool if not requested not to */ + if (!(test_bit(BNX2X_DONT_CONSUME_CAM_CREDIT, + &elem->cmd_data.vlan_mac.vlan_mac_flags) || + o->put_credit(o))) { + BNX2X_ERR("Failed to return a credit\n"); + return -EINVAL; + } + + return 0; +} + +/** + * bnx2x_validate_vlan_mac_move - check if the MOVE command can be executed + * + * @bp: device handle + * @qo: quable object to check (source) + * @elem: element that needs to be moved + * + * Checks that the requested configuration can be moved. If yes and if + * requested, returns a CAM credit. + * + * The 'validate' is run after the 'optimize'. + */ +static inline int bnx2x_validate_vlan_mac_move(struct bnx2x *bp, + union bnx2x_qable_obj *qo, + struct bnx2x_exeq_elem *elem) +{ + struct bnx2x_vlan_mac_obj *src_o = &qo->vlan_mac; + struct bnx2x_vlan_mac_obj *dest_o = elem->cmd_data.vlan_mac.target_obj; + struct bnx2x_exeq_elem query_elem; + struct bnx2x_exe_queue_obj *src_exeq = &src_o->exe_queue; + struct bnx2x_exe_queue_obj *dest_exeq = &dest_o->exe_queue; + + /* + * Check if we can perform this operation based on the current registry + * state. + */ + if (!src_o->check_move(src_o, dest_o, &elem->cmd_data.vlan_mac.u)) { + DP(BNX2X_MSG_SP, "MOVE command is not allowed considering " + "current registry state\n"); + return -EINVAL; + } + + /* + * Check if there is an already pending DEL or MOVE command for the + * source object or ADD command for a destination object. Return an + * error if so. + */ + memcpy(&query_elem, elem, sizeof(query_elem)); + + /* Check DEL on source */ + query_elem.cmd_data.vlan_mac.cmd = BNX2X_VLAN_MAC_DEL; + if (src_exeq->get(src_exeq, &query_elem)) { + BNX2X_ERR("There is a pending DEL command on the source " + "queue already\n"); + return -EINVAL; + } + + /* Check MOVE on source */ + if (src_exeq->get(src_exeq, elem)) { + DP(BNX2X_MSG_SP, "There is a pending MOVE command already\n"); + return -EEXIST; + } + + /* Check ADD on destination */ + query_elem.cmd_data.vlan_mac.cmd = BNX2X_VLAN_MAC_ADD; + if (dest_exeq->get(dest_exeq, &query_elem)) { + BNX2X_ERR("There is a pending ADD command on the " + "destination queue already\n"); + return -EINVAL; + } + + /* Consume the credit if not requested not to */ + if (!(test_bit(BNX2X_DONT_CONSUME_CAM_CREDIT_DEST, + &elem->cmd_data.vlan_mac.vlan_mac_flags) || + dest_o->get_credit(dest_o))) + return -EINVAL; + + if (!(test_bit(BNX2X_DONT_CONSUME_CAM_CREDIT, + &elem->cmd_data.vlan_mac.vlan_mac_flags) || + src_o->put_credit(src_o))) { + /* return the credit taken from dest... */ + dest_o->put_credit(dest_o); + return -EINVAL; + } + + return 0; +} + +static int bnx2x_validate_vlan_mac(struct bnx2x *bp, + union bnx2x_qable_obj *qo, + struct bnx2x_exeq_elem *elem) +{ + switch (elem->cmd_data.vlan_mac.cmd) { + case BNX2X_VLAN_MAC_ADD: + return bnx2x_validate_vlan_mac_add(bp, qo, elem); + case BNX2X_VLAN_MAC_DEL: + return bnx2x_validate_vlan_mac_del(bp, qo, elem); + case BNX2X_VLAN_MAC_MOVE: + return bnx2x_validate_vlan_mac_move(bp, qo, elem); + default: + return -EINVAL; + } +} + +/** + * bnx2x_wait_vlan_mac - passivly wait for 5 seconds until all work completes. + * + * @bp: device handle + * @o: bnx2x_vlan_mac_obj + * + */ +static int bnx2x_wait_vlan_mac(struct bnx2x *bp, + struct bnx2x_vlan_mac_obj *o) +{ + int cnt = 5000, rc; + struct bnx2x_exe_queue_obj *exeq = &o->exe_queue; + struct bnx2x_raw_obj *raw = &o->raw; + + while (cnt--) { + /* Wait for the current command to complete */ + rc = raw->wait_comp(bp, raw); + if (rc) + return rc; + + /* Wait until there are no pending commands */ + if (!bnx2x_exe_queue_empty(exeq)) + usleep_range(1000, 1000); + else + return 0; + } + + return -EBUSY; +} + +/** + * bnx2x_complete_vlan_mac - complete one VLAN-MAC ramrod + * + * @bp: device handle + * @o: bnx2x_vlan_mac_obj + * @cqe: + * @cont: if true schedule next execution chunk + * + */ +static int bnx2x_complete_vlan_mac(struct bnx2x *bp, + struct bnx2x_vlan_mac_obj *o, + union event_ring_elem *cqe, + unsigned long *ramrod_flags) +{ + struct bnx2x_raw_obj *r = &o->raw; + int rc; + + /* Reset pending list */ + bnx2x_exe_queue_reset_pending(bp, &o->exe_queue); + + /* Clear pending */ + r->clear_pending(r); + + /* If ramrod failed this is most likely a SW bug */ + if (cqe->message.error) + return -EINVAL; + + /* Run the next bulk of pending commands if requeted */ + if (test_bit(RAMROD_CONT, ramrod_flags)) { + rc = bnx2x_exe_queue_step(bp, &o->exe_queue, ramrod_flags); + if (rc < 0) + return rc; + } + + /* If there is more work to do return PENDING */ + if (!bnx2x_exe_queue_empty(&o->exe_queue)) + return 1; + + return 0; +} + +/** + * bnx2x_optimize_vlan_mac - optimize ADD and DEL commands. + * + * @bp: device handle + * @o: bnx2x_qable_obj + * @elem: bnx2x_exeq_elem + */ +static int bnx2x_optimize_vlan_mac(struct bnx2x *bp, + union bnx2x_qable_obj *qo, + struct bnx2x_exeq_elem *elem) +{ + struct bnx2x_exeq_elem query, *pos; + struct bnx2x_vlan_mac_obj *o = &qo->vlan_mac; + struct bnx2x_exe_queue_obj *exeq = &o->exe_queue; + + memcpy(&query, elem, sizeof(query)); + + switch (elem->cmd_data.vlan_mac.cmd) { + case BNX2X_VLAN_MAC_ADD: + query.cmd_data.vlan_mac.cmd = BNX2X_VLAN_MAC_DEL; + break; + case BNX2X_VLAN_MAC_DEL: + query.cmd_data.vlan_mac.cmd = BNX2X_VLAN_MAC_ADD; + break; + default: + /* Don't handle anything other than ADD or DEL */ + return 0; + } + + /* If we found the appropriate element - delete it */ + pos = exeq->get(exeq, &query); + if (pos) { + + /* Return the credit of the optimized command */ + if (!test_bit(BNX2X_DONT_CONSUME_CAM_CREDIT, + &pos->cmd_data.vlan_mac.vlan_mac_flags)) { + if ((query.cmd_data.vlan_mac.cmd == + BNX2X_VLAN_MAC_ADD) && !o->put_credit(o)) { + BNX2X_ERR("Failed to return the credit for the " + "optimized ADD command\n"); + return -EINVAL; + } else if (!o->get_credit(o)) { /* VLAN_MAC_DEL */ + BNX2X_ERR("Failed to recover the credit from " + "the optimized DEL command\n"); + return -EINVAL; + } + } + + DP(BNX2X_MSG_SP, "Optimizing %s command\n", + (elem->cmd_data.vlan_mac.cmd == BNX2X_VLAN_MAC_ADD) ? + "ADD" : "DEL"); + + list_del(&pos->link); + bnx2x_exe_queue_free_elem(bp, pos); + return 1; + } + + return 0; +} + +/** + * bnx2x_vlan_mac_get_registry_elem - prepare a registry element + * + * @bp: device handle + * @o: + * @elem: + * @restore: + * @re: + * + * prepare a registry element according to the current command request. + */ +static inline int bnx2x_vlan_mac_get_registry_elem( + struct bnx2x *bp, + struct bnx2x_vlan_mac_obj *o, + struct bnx2x_exeq_elem *elem, + bool restore, + struct bnx2x_vlan_mac_registry_elem **re) +{ + int cmd = elem->cmd_data.vlan_mac.cmd; + struct bnx2x_vlan_mac_registry_elem *reg_elem; + + /* Allocate a new registry element if needed. */ + if (!restore && + ((cmd == BNX2X_VLAN_MAC_ADD) || (cmd == BNX2X_VLAN_MAC_MOVE))) { + reg_elem = kzalloc(sizeof(*reg_elem), GFP_ATOMIC); + if (!reg_elem) + return -ENOMEM; + + /* Get a new CAM offset */ + if (!o->get_cam_offset(o, ®_elem->cam_offset)) { + /* + * This shell never happen, because we have checked the + * CAM availiability in the 'validate'. + */ + WARN_ON(1); + kfree(reg_elem); + return -EINVAL; + } + + DP(BNX2X_MSG_SP, "Got cam offset %d\n", reg_elem->cam_offset); + + /* Set a VLAN-MAC data */ + memcpy(®_elem->u, &elem->cmd_data.vlan_mac.u, + sizeof(reg_elem->u)); + + /* Copy the flags (needed for DEL and RESTORE flows) */ + reg_elem->vlan_mac_flags = + elem->cmd_data.vlan_mac.vlan_mac_flags; + } else /* DEL, RESTORE */ + reg_elem = o->check_del(o, &elem->cmd_data.vlan_mac.u); + + *re = reg_elem; + return 0; +} + +/** + * bnx2x_execute_vlan_mac - execute vlan mac command + * + * @bp: device handle + * @qo: + * @exe_chunk: + * @ramrod_flags: + * + * go and send a ramrod! + */ +static int bnx2x_execute_vlan_mac(struct bnx2x *bp, + union bnx2x_qable_obj *qo, + struct list_head *exe_chunk, + unsigned long *ramrod_flags) +{ + struct bnx2x_exeq_elem *elem; + struct bnx2x_vlan_mac_obj *o = &qo->vlan_mac, *cam_obj; + struct bnx2x_raw_obj *r = &o->raw; + int rc, idx = 0; + bool restore = test_bit(RAMROD_RESTORE, ramrod_flags); + bool drv_only = test_bit(RAMROD_DRV_CLR_ONLY, ramrod_flags); + struct bnx2x_vlan_mac_registry_elem *reg_elem; + int cmd; + + /* + * If DRIVER_ONLY execution is requested, cleanup a registry + * and exit. Otherwise send a ramrod to FW. + */ + if (!drv_only) { + WARN_ON(r->check_pending(r)); + + /* Set pending */ + r->set_pending(r); + + /* Fill tha ramrod data */ + list_for_each_entry(elem, exe_chunk, link) { + cmd = elem->cmd_data.vlan_mac.cmd; + /* + * We will add to the target object in MOVE command, so + * change the object for a CAM search. + */ + if (cmd == BNX2X_VLAN_MAC_MOVE) + cam_obj = elem->cmd_data.vlan_mac.target_obj; + else + cam_obj = o; + + rc = bnx2x_vlan_mac_get_registry_elem(bp, cam_obj, + elem, restore, + ®_elem); + if (rc) + goto error_exit; + + WARN_ON(!reg_elem); + + /* Push a new entry into the registry */ + if (!restore && + ((cmd == BNX2X_VLAN_MAC_ADD) || + (cmd == BNX2X_VLAN_MAC_MOVE))) + list_add(®_elem->link, &cam_obj->head); + + /* Configure a single command in a ramrod data buffer */ + o->set_one_rule(bp, o, elem, idx, + reg_elem->cam_offset); + + /* MOVE command consumes 2 entries in the ramrod data */ + if (cmd == BNX2X_VLAN_MAC_MOVE) + idx += 2; + else + idx++; + } + + /* + * No need for an explicit memory barrier here as long we would + * need to ensure the ordering of writing to the SPQ element + * and updating of the SPQ producer which involves a memory + * read and we will have to put a full memory barrier there + * (inside bnx2x_sp_post()). + */ + + rc = bnx2x_sp_post(bp, o->ramrod_cmd, r->cid, + U64_HI(r->rdata_mapping), + U64_LO(r->rdata_mapping), + ETH_CONNECTION_TYPE); + if (rc) + goto error_exit; + } + + /* Now, when we are done with the ramrod - clean up the registry */ + list_for_each_entry(elem, exe_chunk, link) { + cmd = elem->cmd_data.vlan_mac.cmd; + if ((cmd == BNX2X_VLAN_MAC_DEL) || + (cmd == BNX2X_VLAN_MAC_MOVE)) { + reg_elem = o->check_del(o, &elem->cmd_data.vlan_mac.u); + + WARN_ON(!reg_elem); + + o->put_cam_offset(o, reg_elem->cam_offset); + list_del(®_elem->link); + kfree(reg_elem); + } + } + + if (!drv_only) + return 1; + else + return 0; + +error_exit: + r->clear_pending(r); + + /* Cleanup a registry in case of a failure */ + list_for_each_entry(elem, exe_chunk, link) { + cmd = elem->cmd_data.vlan_mac.cmd; + + if (cmd == BNX2X_VLAN_MAC_MOVE) + cam_obj = elem->cmd_data.vlan_mac.target_obj; + else + cam_obj = o; + + /* Delete all newly added above entries */ + if (!restore && + ((cmd == BNX2X_VLAN_MAC_ADD) || + (cmd == BNX2X_VLAN_MAC_MOVE))) { + reg_elem = o->check_del(cam_obj, + &elem->cmd_data.vlan_mac.u); + if (reg_elem) { + list_del(®_elem->link); + kfree(reg_elem); + } + } + } + + return rc; +} + +static inline int bnx2x_vlan_mac_push_new_cmd( + struct bnx2x *bp, + struct bnx2x_vlan_mac_ramrod_params *p) +{ + struct bnx2x_exeq_elem *elem; + struct bnx2x_vlan_mac_obj *o = p->vlan_mac_obj; + bool restore = test_bit(RAMROD_RESTORE, &p->ramrod_flags); + + /* Allocate the execution queue element */ + elem = bnx2x_exe_queue_alloc_elem(bp); + if (!elem) + return -ENOMEM; + + /* Set the command 'length' */ + switch (p->user_req.cmd) { + case BNX2X_VLAN_MAC_MOVE: + elem->cmd_len = 2; + break; + default: + elem->cmd_len = 1; + } + + /* Fill the object specific info */ + memcpy(&elem->cmd_data.vlan_mac, &p->user_req, sizeof(p->user_req)); + + /* Try to add a new command to the pending list */ + return bnx2x_exe_queue_add(bp, &o->exe_queue, elem, restore); +} + +/** + * bnx2x_config_vlan_mac - configure VLAN/MAC/VLAN_MAC filtering rules. + * + * @bp: device handle + * @p: + * + */ +int bnx2x_config_vlan_mac( + struct bnx2x *bp, + struct bnx2x_vlan_mac_ramrod_params *p) +{ + int rc = 0; + struct bnx2x_vlan_mac_obj *o = p->vlan_mac_obj; + unsigned long *ramrod_flags = &p->ramrod_flags; + bool cont = test_bit(RAMROD_CONT, ramrod_flags); + struct bnx2x_raw_obj *raw = &o->raw; + + /* + * Add new elements to the execution list for commands that require it. + */ + if (!cont) { + rc = bnx2x_vlan_mac_push_new_cmd(bp, p); + if (rc) + return rc; + } + + /* + * If nothing will be executed further in this iteration we want to + * return PENDING if there are pending commands + */ + if (!bnx2x_exe_queue_empty(&o->exe_queue)) + rc = 1; + + if (test_bit(RAMROD_DRV_CLR_ONLY, ramrod_flags)) { + DP(BNX2X_MSG_SP, "RAMROD_DRV_CLR_ONLY requested: " + "clearing a pending bit.\n"); + raw->clear_pending(raw); + } + + /* Execute commands if required */ + if (cont || test_bit(RAMROD_EXEC, ramrod_flags) || + test_bit(RAMROD_COMP_WAIT, ramrod_flags)) { + rc = bnx2x_exe_queue_step(bp, &o->exe_queue, ramrod_flags); + if (rc < 0) + return rc; + } + + /* + * RAMROD_COMP_WAIT is a superset of RAMROD_EXEC. If it was set + * then user want to wait until the last command is done. + */ + if (test_bit(RAMROD_COMP_WAIT, &p->ramrod_flags)) { + /* + * Wait maximum for the current exe_queue length iterations plus + * one (for the current pending command). + */ + int max_iterations = bnx2x_exe_queue_length(&o->exe_queue) + 1; + + while (!bnx2x_exe_queue_empty(&o->exe_queue) && + max_iterations--) { + + /* Wait for the current command to complete */ + rc = raw->wait_comp(bp, raw); + if (rc) + return rc; + + /* Make a next step */ + rc = bnx2x_exe_queue_step(bp, &o->exe_queue, + ramrod_flags); + if (rc < 0) + return rc; + } + + return 0; + } + + return rc; +} + + + +/** + * bnx2x_vlan_mac_del_all - delete elements with given vlan_mac_flags spec + * + * @bp: device handle + * @o: + * @vlan_mac_flags: + * @ramrod_flags: execution flags to be used for this deletion + * + * if the last operation has completed successfully and there are no + * moreelements left, positive value if the last operation has completed + * successfully and there are more previously configured elements, negative + * value is current operation has failed. + */ +static int bnx2x_vlan_mac_del_all(struct bnx2x *bp, + struct bnx2x_vlan_mac_obj *o, + unsigned long *vlan_mac_flags, + unsigned long *ramrod_flags) +{ + struct bnx2x_vlan_mac_registry_elem *pos = NULL; + int rc = 0; + struct bnx2x_vlan_mac_ramrod_params p; + struct bnx2x_exe_queue_obj *exeq = &o->exe_queue; + struct bnx2x_exeq_elem *exeq_pos, *exeq_pos_n; + + /* Clear pending commands first */ + + spin_lock_bh(&exeq->lock); + + list_for_each_entry_safe(exeq_pos, exeq_pos_n, &exeq->exe_queue, link) { + if (exeq_pos->cmd_data.vlan_mac.vlan_mac_flags == + *vlan_mac_flags) + list_del(&exeq_pos->link); + } + + spin_unlock_bh(&exeq->lock); + + /* Prepare a command request */ + memset(&p, 0, sizeof(p)); + p.vlan_mac_obj = o; + p.ramrod_flags = *ramrod_flags; + p.user_req.cmd = BNX2X_VLAN_MAC_DEL; + + /* + * Add all but the last VLAN-MAC to the execution queue without actually + * execution anything. + */ + __clear_bit(RAMROD_COMP_WAIT, &p.ramrod_flags); + __clear_bit(RAMROD_EXEC, &p.ramrod_flags); + __clear_bit(RAMROD_CONT, &p.ramrod_flags); + + list_for_each_entry(pos, &o->head, link) { + if (pos->vlan_mac_flags == *vlan_mac_flags) { + p.user_req.vlan_mac_flags = pos->vlan_mac_flags; + memcpy(&p.user_req.u, &pos->u, sizeof(pos->u)); + rc = bnx2x_config_vlan_mac(bp, &p); + if (rc < 0) { + BNX2X_ERR("Failed to add a new DEL command\n"); + return rc; + } + } + } + + p.ramrod_flags = *ramrod_flags; + __set_bit(RAMROD_CONT, &p.ramrod_flags); + + return bnx2x_config_vlan_mac(bp, &p); +} + +static inline void bnx2x_init_raw_obj(struct bnx2x_raw_obj *raw, u8 cl_id, + u32 cid, u8 func_id, void *rdata, dma_addr_t rdata_mapping, int state, + unsigned long *pstate, bnx2x_obj_type type) +{ + raw->func_id = func_id; + raw->cid = cid; + raw->cl_id = cl_id; + raw->rdata = rdata; + raw->rdata_mapping = rdata_mapping; + raw->state = state; + raw->pstate = pstate; + raw->obj_type = type; + raw->check_pending = bnx2x_raw_check_pending; + raw->clear_pending = bnx2x_raw_clear_pending; + raw->set_pending = bnx2x_raw_set_pending; + raw->wait_comp = bnx2x_raw_wait; +} + +static inline void bnx2x_init_vlan_mac_common(struct bnx2x_vlan_mac_obj *o, + u8 cl_id, u32 cid, u8 func_id, void *rdata, dma_addr_t rdata_mapping, + int state, unsigned long *pstate, bnx2x_obj_type type, + struct bnx2x_credit_pool_obj *macs_pool, + struct bnx2x_credit_pool_obj *vlans_pool) +{ + INIT_LIST_HEAD(&o->head); + + o->macs_pool = macs_pool; + o->vlans_pool = vlans_pool; + + o->delete_all = bnx2x_vlan_mac_del_all; + o->restore = bnx2x_vlan_mac_restore; + o->complete = bnx2x_complete_vlan_mac; + o->wait = bnx2x_wait_vlan_mac; + + bnx2x_init_raw_obj(&o->raw, cl_id, cid, func_id, rdata, rdata_mapping, + state, pstate, type); +} + + +void bnx2x_init_mac_obj(struct bnx2x *bp, + struct bnx2x_vlan_mac_obj *mac_obj, + u8 cl_id, u32 cid, u8 func_id, void *rdata, + dma_addr_t rdata_mapping, int state, + unsigned long *pstate, bnx2x_obj_type type, + struct bnx2x_credit_pool_obj *macs_pool) +{ + union bnx2x_qable_obj *qable_obj = (union bnx2x_qable_obj *)mac_obj; + + bnx2x_init_vlan_mac_common(mac_obj, cl_id, cid, func_id, rdata, + rdata_mapping, state, pstate, type, + macs_pool, NULL); + + /* CAM credit pool handling */ + mac_obj->get_credit = bnx2x_get_credit_mac; + mac_obj->put_credit = bnx2x_put_credit_mac; + mac_obj->get_cam_offset = bnx2x_get_cam_offset_mac; + mac_obj->put_cam_offset = bnx2x_put_cam_offset_mac; + + if (CHIP_IS_E1x(bp)) { + mac_obj->set_one_rule = bnx2x_set_one_mac_e1x; + mac_obj->check_del = bnx2x_check_mac_del; + mac_obj->check_add = bnx2x_check_mac_add; + mac_obj->check_move = bnx2x_check_move_always_err; + mac_obj->ramrod_cmd = RAMROD_CMD_ID_ETH_SET_MAC; + + /* Exe Queue */ + bnx2x_exe_queue_init(bp, + &mac_obj->exe_queue, 1, qable_obj, + bnx2x_validate_vlan_mac, + bnx2x_optimize_vlan_mac, + bnx2x_execute_vlan_mac, + bnx2x_exeq_get_mac); + } else { + mac_obj->set_one_rule = bnx2x_set_one_mac_e2; + mac_obj->check_del = bnx2x_check_mac_del; + mac_obj->check_add = bnx2x_check_mac_add; + mac_obj->check_move = bnx2x_check_move; + mac_obj->ramrod_cmd = + RAMROD_CMD_ID_ETH_CLASSIFICATION_RULES; + + /* Exe Queue */ + bnx2x_exe_queue_init(bp, + &mac_obj->exe_queue, CLASSIFY_RULES_COUNT, + qable_obj, bnx2x_validate_vlan_mac, + bnx2x_optimize_vlan_mac, + bnx2x_execute_vlan_mac, + bnx2x_exeq_get_mac); + } +} + +void bnx2x_init_vlan_obj(struct bnx2x *bp, + struct bnx2x_vlan_mac_obj *vlan_obj, + u8 cl_id, u32 cid, u8 func_id, void *rdata, + dma_addr_t rdata_mapping, int state, + unsigned long *pstate, bnx2x_obj_type type, + struct bnx2x_credit_pool_obj *vlans_pool) +{ + union bnx2x_qable_obj *qable_obj = (union bnx2x_qable_obj *)vlan_obj; + + bnx2x_init_vlan_mac_common(vlan_obj, cl_id, cid, func_id, rdata, + rdata_mapping, state, pstate, type, NULL, + vlans_pool); + + vlan_obj->get_credit = bnx2x_get_credit_vlan; + vlan_obj->put_credit = bnx2x_put_credit_vlan; + vlan_obj->get_cam_offset = bnx2x_get_cam_offset_vlan; + vlan_obj->put_cam_offset = bnx2x_put_cam_offset_vlan; + + if (CHIP_IS_E1x(bp)) { + BNX2X_ERR("Do not support chips others than E2 and newer\n"); + BUG(); + } else { + vlan_obj->set_one_rule = bnx2x_set_one_vlan_e2; + vlan_obj->check_del = bnx2x_check_vlan_del; + vlan_obj->check_add = bnx2x_check_vlan_add; + vlan_obj->check_move = bnx2x_check_move; + vlan_obj->ramrod_cmd = + RAMROD_CMD_ID_ETH_CLASSIFICATION_RULES; + + /* Exe Queue */ + bnx2x_exe_queue_init(bp, + &vlan_obj->exe_queue, CLASSIFY_RULES_COUNT, + qable_obj, bnx2x_validate_vlan_mac, + bnx2x_optimize_vlan_mac, + bnx2x_execute_vlan_mac, + bnx2x_exeq_get_vlan); + } +} + +void bnx2x_init_vlan_mac_obj(struct bnx2x *bp, + struct bnx2x_vlan_mac_obj *vlan_mac_obj, + u8 cl_id, u32 cid, u8 func_id, void *rdata, + dma_addr_t rdata_mapping, int state, + unsigned long *pstate, bnx2x_obj_type type, + struct bnx2x_credit_pool_obj *macs_pool, + struct bnx2x_credit_pool_obj *vlans_pool) +{ + union bnx2x_qable_obj *qable_obj = + (union bnx2x_qable_obj *)vlan_mac_obj; + + bnx2x_init_vlan_mac_common(vlan_mac_obj, cl_id, cid, func_id, rdata, + rdata_mapping, state, pstate, type, + macs_pool, vlans_pool); + + /* CAM pool handling */ + vlan_mac_obj->get_credit = bnx2x_get_credit_vlan_mac; + vlan_mac_obj->put_credit = bnx2x_put_credit_vlan_mac; + /* + * CAM offset is relevant for 57710 and 57711 chips only which have a + * single CAM for both MACs and VLAN-MAC pairs. So the offset + * will be taken from MACs' pool object only. + */ + vlan_mac_obj->get_cam_offset = bnx2x_get_cam_offset_mac; + vlan_mac_obj->put_cam_offset = bnx2x_put_cam_offset_mac; + + if (CHIP_IS_E1(bp)) { + BNX2X_ERR("Do not support chips others than E2\n"); + BUG(); + } else if (CHIP_IS_E1H(bp)) { + vlan_mac_obj->set_one_rule = bnx2x_set_one_vlan_mac_e1h; + vlan_mac_obj->check_del = bnx2x_check_vlan_mac_del; + vlan_mac_obj->check_add = bnx2x_check_vlan_mac_add; + vlan_mac_obj->check_move = bnx2x_check_move_always_err; + vlan_mac_obj->ramrod_cmd = RAMROD_CMD_ID_ETH_SET_MAC; + + /* Exe Queue */ + bnx2x_exe_queue_init(bp, + &vlan_mac_obj->exe_queue, 1, qable_obj, + bnx2x_validate_vlan_mac, + bnx2x_optimize_vlan_mac, + bnx2x_execute_vlan_mac, + bnx2x_exeq_get_vlan_mac); + } else { + vlan_mac_obj->set_one_rule = bnx2x_set_one_vlan_mac_e2; + vlan_mac_obj->check_del = bnx2x_check_vlan_mac_del; + vlan_mac_obj->check_add = bnx2x_check_vlan_mac_add; + vlan_mac_obj->check_move = bnx2x_check_move; + vlan_mac_obj->ramrod_cmd = + RAMROD_CMD_ID_ETH_CLASSIFICATION_RULES; + + /* Exe Queue */ + bnx2x_exe_queue_init(bp, + &vlan_mac_obj->exe_queue, + CLASSIFY_RULES_COUNT, + qable_obj, bnx2x_validate_vlan_mac, + bnx2x_optimize_vlan_mac, + bnx2x_execute_vlan_mac, + bnx2x_exeq_get_vlan_mac); + } + +} + +/* RX_MODE verbs: DROP_ALL/ACCEPT_ALL/ACCEPT_ALL_MULTI/ACCEPT_ALL_VLAN/NORMAL */ +static inline void __storm_memset_mac_filters(struct bnx2x *bp, + struct tstorm_eth_mac_filter_config *mac_filters, + u16 pf_id) +{ + size_t size = sizeof(struct tstorm_eth_mac_filter_config); + + u32 addr = BAR_TSTRORM_INTMEM + + TSTORM_MAC_FILTER_CONFIG_OFFSET(pf_id); + + __storm_memset_struct(bp, addr, size, (u32 *)mac_filters); +} + +static int bnx2x_set_rx_mode_e1x(struct bnx2x *bp, + struct bnx2x_rx_mode_ramrod_params *p) +{ + /* update the bp MAC filter structure */ + u32 mask = (1 << p->cl_id); + + struct tstorm_eth_mac_filter_config *mac_filters = + (struct tstorm_eth_mac_filter_config *)p->rdata; + + /* initial seeting is drop-all */ + u8 drop_all_ucast = 1, drop_all_mcast = 1; + u8 accp_all_ucast = 0, accp_all_bcast = 0, accp_all_mcast = 0; + u8 unmatched_unicast = 0; + + /* In e1x there we only take into account rx acceot flag since tx switching + * isn't enabled. */ + if (test_bit(BNX2X_ACCEPT_UNICAST, &p->rx_accept_flags)) + /* accept matched ucast */ + drop_all_ucast = 0; + + if (test_bit(BNX2X_ACCEPT_MULTICAST, &p->rx_accept_flags)) + /* accept matched mcast */ + drop_all_mcast = 0; + + if (test_bit(BNX2X_ACCEPT_ALL_UNICAST, &p->rx_accept_flags)) { + /* accept all mcast */ + drop_all_ucast = 0; + accp_all_ucast = 1; + } + if (test_bit(BNX2X_ACCEPT_ALL_MULTICAST, &p->rx_accept_flags)) { + /* accept all mcast */ + drop_all_mcast = 0; + accp_all_mcast = 1; + } + if (test_bit(BNX2X_ACCEPT_BROADCAST, &p->rx_accept_flags)) + /* accept (all) bcast */ + accp_all_bcast = 1; + if (test_bit(BNX2X_ACCEPT_UNMATCHED, &p->rx_accept_flags)) + /* accept unmatched unicasts */ + unmatched_unicast = 1; + + mac_filters->ucast_drop_all = drop_all_ucast ? + mac_filters->ucast_drop_all | mask : + mac_filters->ucast_drop_all & ~mask; + + mac_filters->mcast_drop_all = drop_all_mcast ? + mac_filters->mcast_drop_all | mask : + mac_filters->mcast_drop_all & ~mask; + + mac_filters->ucast_accept_all = accp_all_ucast ? + mac_filters->ucast_accept_all | mask : + mac_filters->ucast_accept_all & ~mask; + + mac_filters->mcast_accept_all = accp_all_mcast ? + mac_filters->mcast_accept_all | mask : + mac_filters->mcast_accept_all & ~mask; + + mac_filters->bcast_accept_all = accp_all_bcast ? + mac_filters->bcast_accept_all | mask : + mac_filters->bcast_accept_all & ~mask; + + mac_filters->unmatched_unicast = unmatched_unicast ? + mac_filters->unmatched_unicast | mask : + mac_filters->unmatched_unicast & ~mask; + + DP(BNX2X_MSG_SP, "drop_ucast 0x%x\ndrop_mcast 0x%x\n accp_ucast 0x%x\n" + "accp_mcast 0x%x\naccp_bcast 0x%x\n", + mac_filters->ucast_drop_all, + mac_filters->mcast_drop_all, + mac_filters->ucast_accept_all, + mac_filters->mcast_accept_all, + mac_filters->bcast_accept_all); + + /* write the MAC filter structure*/ + __storm_memset_mac_filters(bp, mac_filters, p->func_id); + + /* The operation is completed */ + clear_bit(p->state, p->pstate); + smp_mb__after_clear_bit(); + + return 0; +} + +/* Setup ramrod data */ +static inline void bnx2x_rx_mode_set_rdata_hdr_e2(u32 cid, + struct eth_classify_header *hdr, + u8 rule_cnt) +{ + hdr->echo = cid; + hdr->rule_cnt = rule_cnt; +} + +static inline void bnx2x_rx_mode_set_cmd_state_e2(struct bnx2x *bp, + unsigned long accept_flags, + struct eth_filter_rules_cmd *cmd, + bool clear_accept_all) +{ + u16 state; + + /* start with 'drop-all' */ + state = ETH_FILTER_RULES_CMD_UCAST_DROP_ALL | + ETH_FILTER_RULES_CMD_MCAST_DROP_ALL; + + if (accept_flags) { + if (test_bit(BNX2X_ACCEPT_UNICAST, &accept_flags)) + state &= ~ETH_FILTER_RULES_CMD_UCAST_DROP_ALL; + + if (test_bit(BNX2X_ACCEPT_MULTICAST, &accept_flags)) + state &= ~ETH_FILTER_RULES_CMD_MCAST_DROP_ALL; + + if (test_bit(BNX2X_ACCEPT_ALL_UNICAST, &accept_flags)) { + state &= ~ETH_FILTER_RULES_CMD_UCAST_DROP_ALL; + state |= ETH_FILTER_RULES_CMD_UCAST_ACCEPT_ALL; + } + + if (test_bit(BNX2X_ACCEPT_ALL_MULTICAST, &accept_flags)) { + state |= ETH_FILTER_RULES_CMD_MCAST_ACCEPT_ALL; + state &= ~ETH_FILTER_RULES_CMD_MCAST_DROP_ALL; + } + if (test_bit(BNX2X_ACCEPT_BROADCAST, &accept_flags)) + state |= ETH_FILTER_RULES_CMD_BCAST_ACCEPT_ALL; + + if (test_bit(BNX2X_ACCEPT_UNMATCHED, &accept_flags)) { + state &= ~ETH_FILTER_RULES_CMD_UCAST_DROP_ALL; + state |= ETH_FILTER_RULES_CMD_UCAST_ACCEPT_UNMATCHED; + } + if (test_bit(BNX2X_ACCEPT_ANY_VLAN, &accept_flags)) + state |= ETH_FILTER_RULES_CMD_ACCEPT_ANY_VLAN; + } + + /* Clear ACCEPT_ALL_XXX flags for FCoE L2 Queue */ + if (clear_accept_all) { + state &= ~ETH_FILTER_RULES_CMD_MCAST_ACCEPT_ALL; + state &= ~ETH_FILTER_RULES_CMD_BCAST_ACCEPT_ALL; + state &= ~ETH_FILTER_RULES_CMD_UCAST_ACCEPT_ALL; + state &= ~ETH_FILTER_RULES_CMD_UCAST_ACCEPT_UNMATCHED; + } + + cmd->state = cpu_to_le16(state); + +} + +static int bnx2x_set_rx_mode_e2(struct bnx2x *bp, + struct bnx2x_rx_mode_ramrod_params *p) +{ + struct eth_filter_rules_ramrod_data *data = p->rdata; + int rc; + u8 rule_idx = 0; + + /* Reset the ramrod data buffer */ + memset(data, 0, sizeof(*data)); + + /* Setup ramrod data */ + + /* Tx (internal switching) */ + if (test_bit(RAMROD_TX, &p->ramrod_flags)) { + data->rules[rule_idx].client_id = p->cl_id; + data->rules[rule_idx].func_id = p->func_id; + + data->rules[rule_idx].cmd_general_data = + ETH_FILTER_RULES_CMD_TX_CMD; + + bnx2x_rx_mode_set_cmd_state_e2(bp, p->tx_accept_flags, + &(data->rules[rule_idx++]), false); + } + + /* Rx */ + if (test_bit(RAMROD_RX, &p->ramrod_flags)) { + data->rules[rule_idx].client_id = p->cl_id; + data->rules[rule_idx].func_id = p->func_id; + + data->rules[rule_idx].cmd_general_data = + ETH_FILTER_RULES_CMD_RX_CMD; + + bnx2x_rx_mode_set_cmd_state_e2(bp, p->rx_accept_flags, + &(data->rules[rule_idx++]), false); + } + + + /* + * If FCoE Queue configuration has been requested configure the Rx and + * internal switching modes for this queue in separate rules. + * + * FCoE queue shell never be set to ACCEPT_ALL packets of any sort: + * MCAST_ALL, UCAST_ALL, BCAST_ALL and UNMATCHED. + */ + if (test_bit(BNX2X_RX_MODE_FCOE_ETH, &p->rx_mode_flags)) { + /* Tx (internal switching) */ + if (test_bit(RAMROD_TX, &p->ramrod_flags)) { + data->rules[rule_idx].client_id = bnx2x_fcoe(bp, cl_id); + data->rules[rule_idx].func_id = p->func_id; + + data->rules[rule_idx].cmd_general_data = + ETH_FILTER_RULES_CMD_TX_CMD; + + bnx2x_rx_mode_set_cmd_state_e2(bp, p->tx_accept_flags, + &(data->rules[rule_idx++]), + true); + } + + /* Rx */ + if (test_bit(RAMROD_RX, &p->ramrod_flags)) { + data->rules[rule_idx].client_id = bnx2x_fcoe(bp, cl_id); + data->rules[rule_idx].func_id = p->func_id; + + data->rules[rule_idx].cmd_general_data = + ETH_FILTER_RULES_CMD_RX_CMD; + + bnx2x_rx_mode_set_cmd_state_e2(bp, p->rx_accept_flags, + &(data->rules[rule_idx++]), + true); + } + } + + /* + * Set the ramrod header (most importantly - number of rules to + * configure). + */ + bnx2x_rx_mode_set_rdata_hdr_e2(p->cid, &data->header, rule_idx); + + DP(BNX2X_MSG_SP, "About to configure %d rules, rx_accept_flags 0x%lx, " + "tx_accept_flags 0x%lx\n", + data->header.rule_cnt, p->rx_accept_flags, + p->tx_accept_flags); + + /* + * No need for an explicit memory barrier here as long we would + * need to ensure the ordering of writing to the SPQ element + * and updating of the SPQ producer which involves a memory + * read and we will have to put a full memory barrier there + * (inside bnx2x_sp_post()). + */ + + /* Send a ramrod */ + rc = bnx2x_sp_post(bp, RAMROD_CMD_ID_ETH_FILTER_RULES, p->cid, + U64_HI(p->rdata_mapping), + U64_LO(p->rdata_mapping), + ETH_CONNECTION_TYPE); + if (rc) + return rc; + + /* Ramrod completion is pending */ + return 1; +} + +static int bnx2x_wait_rx_mode_comp_e2(struct bnx2x *bp, + struct bnx2x_rx_mode_ramrod_params *p) +{ + return bnx2x_state_wait(bp, p->state, p->pstate); +} + +static int bnx2x_empty_rx_mode_wait(struct bnx2x *bp, + struct bnx2x_rx_mode_ramrod_params *p) +{ + /* Do nothing */ + return 0; +} + +int bnx2x_config_rx_mode(struct bnx2x *bp, + struct bnx2x_rx_mode_ramrod_params *p) +{ + int rc; + + /* Configure the new classification in the chip */ + rc = p->rx_mode_obj->config_rx_mode(bp, p); + if (rc < 0) + return rc; + + /* Wait for a ramrod completion if was requested */ + if (test_bit(RAMROD_COMP_WAIT, &p->ramrod_flags)) { + rc = p->rx_mode_obj->wait_comp(bp, p); + if (rc) + return rc; + } + + return rc; +} + +void bnx2x_init_rx_mode_obj(struct bnx2x *bp, + struct bnx2x_rx_mode_obj *o) +{ + if (CHIP_IS_E1x(bp)) { + o->wait_comp = bnx2x_empty_rx_mode_wait; + o->config_rx_mode = bnx2x_set_rx_mode_e1x; + } else { + o->wait_comp = bnx2x_wait_rx_mode_comp_e2; + o->config_rx_mode = bnx2x_set_rx_mode_e2; + } +} + +/********************* Multicast verbs: SET, CLEAR ****************************/ +static inline u8 bnx2x_mcast_bin_from_mac(u8 *mac) +{ + return (crc32c_le(0, mac, ETH_ALEN) >> 24) & 0xff; +} + +struct bnx2x_mcast_mac_elem { + struct list_head link; + u8 mac[ETH_ALEN]; + u8 pad[2]; /* For a natural alignment of the following buffer */ +}; + +struct bnx2x_pending_mcast_cmd { + struct list_head link; + int type; /* BNX2X_MCAST_CMD_X */ + union { + struct list_head macs_head; + u32 macs_num; /* Needed for DEL command */ + int next_bin; /* Needed for RESTORE flow with aprox match */ + } data; + + bool done; /* set to true, when the command has been handled, + * practically used in 57712 handling only, where one pending + * command may be handled in a few operations. As long as for + * other chips every operation handling is completed in a + * single ramrod, there is no need to utilize this field. + */ +}; + +static int bnx2x_mcast_wait(struct bnx2x *bp, + struct bnx2x_mcast_obj *o) +{ + if (bnx2x_state_wait(bp, o->sched_state, o->raw.pstate) || + o->raw.wait_comp(bp, &o->raw)) + return -EBUSY; + + return 0; +} + +static int bnx2x_mcast_enqueue_cmd(struct bnx2x *bp, + struct bnx2x_mcast_obj *o, + struct bnx2x_mcast_ramrod_params *p, + int cmd) +{ + int total_sz; + struct bnx2x_pending_mcast_cmd *new_cmd; + struct bnx2x_mcast_mac_elem *cur_mac = NULL; + struct bnx2x_mcast_list_elem *pos; + int macs_list_len = ((cmd == BNX2X_MCAST_CMD_ADD) ? + p->mcast_list_len : 0); + + /* If the command is empty ("handle pending commands only"), break */ + if (!p->mcast_list_len) + return 0; + + total_sz = sizeof(*new_cmd) + + macs_list_len * sizeof(struct bnx2x_mcast_mac_elem); + + /* Add mcast is called under spin_lock, thus calling with GFP_ATOMIC */ + new_cmd = kzalloc(total_sz, GFP_ATOMIC); + + if (!new_cmd) + return -ENOMEM; + + DP(BNX2X_MSG_SP, "About to enqueue a new %d command. " + "macs_list_len=%d\n", cmd, macs_list_len); + + INIT_LIST_HEAD(&new_cmd->data.macs_head); + + new_cmd->type = cmd; + new_cmd->done = false; + + switch (cmd) { + case BNX2X_MCAST_CMD_ADD: + cur_mac = (struct bnx2x_mcast_mac_elem *) + ((u8 *)new_cmd + sizeof(*new_cmd)); + + /* Push the MACs of the current command into the pendig command + * MACs list: FIFO + */ + list_for_each_entry(pos, &p->mcast_list, link) { + memcpy(cur_mac->mac, pos->mac, ETH_ALEN); + list_add_tail(&cur_mac->link, &new_cmd->data.macs_head); + cur_mac++; + } + + break; + + case BNX2X_MCAST_CMD_DEL: + new_cmd->data.macs_num = p->mcast_list_len; + break; + + case BNX2X_MCAST_CMD_RESTORE: + new_cmd->data.next_bin = 0; + break; + + default: + BNX2X_ERR("Unknown command: %d\n", cmd); + return -EINVAL; + } + + /* Push the new pending command to the tail of the pending list: FIFO */ + list_add_tail(&new_cmd->link, &o->pending_cmds_head); + + o->set_sched(o); + + return 1; +} + +/** + * bnx2x_mcast_get_next_bin - get the next set bin (index) + * + * @o: + * @last: index to start looking from (including) + * + * returns the next found (set) bin or a negative value if none is found. + */ +static inline int bnx2x_mcast_get_next_bin(struct bnx2x_mcast_obj *o, int last) +{ + int i, j, inner_start = last % BIT_VEC64_ELEM_SZ; + + for (i = last / BIT_VEC64_ELEM_SZ; i < BNX2X_MCAST_VEC_SZ; i++) { + if (o->registry.aprox_match.vec[i]) + for (j = inner_start; j < BIT_VEC64_ELEM_SZ; j++) { + int cur_bit = j + BIT_VEC64_ELEM_SZ * i; + if (BIT_VEC64_TEST_BIT(o->registry.aprox_match. + vec, cur_bit)) { + return cur_bit; + } + } + inner_start = 0; + } + + /* None found */ + return -1; +} + +/** + * bnx2x_mcast_clear_first_bin - find the first set bin and clear it + * + * @o: + * + * returns the index of the found bin or -1 if none is found + */ +static inline int bnx2x_mcast_clear_first_bin(struct bnx2x_mcast_obj *o) +{ + int cur_bit = bnx2x_mcast_get_next_bin(o, 0); + + if (cur_bit >= 0) + BIT_VEC64_CLEAR_BIT(o->registry.aprox_match.vec, cur_bit); + + return cur_bit; +} + +static inline u8 bnx2x_mcast_get_rx_tx_flag(struct bnx2x_mcast_obj *o) +{ + struct bnx2x_raw_obj *raw = &o->raw; + u8 rx_tx_flag = 0; + + if ((raw->obj_type == BNX2X_OBJ_TYPE_TX) || + (raw->obj_type == BNX2X_OBJ_TYPE_RX_TX)) + rx_tx_flag |= ETH_MULTICAST_RULES_CMD_TX_CMD; + + if ((raw->obj_type == BNX2X_OBJ_TYPE_RX) || + (raw->obj_type == BNX2X_OBJ_TYPE_RX_TX)) + rx_tx_flag |= ETH_MULTICAST_RULES_CMD_RX_CMD; + + return rx_tx_flag; +} + +static void bnx2x_mcast_set_one_rule_e2(struct bnx2x *bp, + struct bnx2x_mcast_obj *o, int idx, + union bnx2x_mcast_config_data *cfg_data, + int cmd) +{ + struct bnx2x_raw_obj *r = &o->raw; + struct eth_multicast_rules_ramrod_data *data = + (struct eth_multicast_rules_ramrod_data *)(r->rdata); + u8 func_id = r->func_id; + u8 rx_tx_add_flag = bnx2x_mcast_get_rx_tx_flag(o); + int bin; + + if ((cmd == BNX2X_MCAST_CMD_ADD) || (cmd == BNX2X_MCAST_CMD_RESTORE)) + rx_tx_add_flag |= ETH_MULTICAST_RULES_CMD_IS_ADD; + + data->rules[idx].cmd_general_data |= rx_tx_add_flag; + + /* Get a bin and update a bins' vector */ + switch (cmd) { + case BNX2X_MCAST_CMD_ADD: + bin = bnx2x_mcast_bin_from_mac(cfg_data->mac); + BIT_VEC64_SET_BIT(o->registry.aprox_match.vec, bin); + break; + + case BNX2X_MCAST_CMD_DEL: + /* If there were no more bins to clear + * (bnx2x_mcast_clear_first_bin() returns -1) then we would + * clear any (0xff) bin. + * See bnx2x_mcast_validate_e2() for explanation when it may + * happen. + */ + bin = bnx2x_mcast_clear_first_bin(o); + break; + + case BNX2X_MCAST_CMD_RESTORE: + bin = cfg_data->bin; + break; + + default: + BNX2X_ERR("Unknown command: %d\n", cmd); + return; + } + + DP(BNX2X_MSG_SP, "%s bin %d\n", + ((rx_tx_add_flag & ETH_MULTICAST_RULES_CMD_IS_ADD) ? + "Setting" : "Clearing"), bin); + + data->rules[idx].bin_id = (u8)bin; + data->rules[idx].func_id = func_id; + data->rules[idx].engine_id = o->engine_id; +} + +/** + * bnx2x_mcast_handle_restore_cmd_e2 - restore configuration from the registry + * + * @bp: device handle + * @o: + * @start_bin: index in the registry to start from (including) + * @rdata_idx: index in the ramrod data to start from + * + * returns last handled bin index or -1 if all bins have been handled + */ +static inline int bnx2x_mcast_handle_restore_cmd_e2( + struct bnx2x *bp, struct bnx2x_mcast_obj *o , int start_bin, + int *rdata_idx) +{ + int cur_bin, cnt = *rdata_idx; + union bnx2x_mcast_config_data cfg_data = {0}; + + /* go through the registry and configure the bins from it */ + for (cur_bin = bnx2x_mcast_get_next_bin(o, start_bin); cur_bin >= 0; + cur_bin = bnx2x_mcast_get_next_bin(o, cur_bin + 1)) { + + cfg_data.bin = (u8)cur_bin; + o->set_one_rule(bp, o, cnt, &cfg_data, + BNX2X_MCAST_CMD_RESTORE); + + cnt++; + + DP(BNX2X_MSG_SP, "About to configure a bin %d\n", cur_bin); + + /* Break if we reached the maximum number + * of rules. + */ + if (cnt >= o->max_cmd_len) + break; + } + + *rdata_idx = cnt; + + return cur_bin; +} + +static inline void bnx2x_mcast_hdl_pending_add_e2(struct bnx2x *bp, + struct bnx2x_mcast_obj *o, struct bnx2x_pending_mcast_cmd *cmd_pos, + int *line_idx) +{ + struct bnx2x_mcast_mac_elem *pmac_pos, *pmac_pos_n; + int cnt = *line_idx; + union bnx2x_mcast_config_data cfg_data = {0}; + + list_for_each_entry_safe(pmac_pos, pmac_pos_n, &cmd_pos->data.macs_head, + link) { + + cfg_data.mac = &pmac_pos->mac[0]; + o->set_one_rule(bp, o, cnt, &cfg_data, cmd_pos->type); + + cnt++; + + DP(BNX2X_MSG_SP, "About to configure "BNX2X_MAC_FMT + " mcast MAC\n", + BNX2X_MAC_PRN_LIST(pmac_pos->mac)); + + list_del(&pmac_pos->link); + + /* Break if we reached the maximum number + * of rules. + */ + if (cnt >= o->max_cmd_len) + break; + } + + *line_idx = cnt; + + /* if no more MACs to configure - we are done */ + if (list_empty(&cmd_pos->data.macs_head)) + cmd_pos->done = true; +} + +static inline void bnx2x_mcast_hdl_pending_del_e2(struct bnx2x *bp, + struct bnx2x_mcast_obj *o, struct bnx2x_pending_mcast_cmd *cmd_pos, + int *line_idx) +{ + int cnt = *line_idx; + + while (cmd_pos->data.macs_num) { + o->set_one_rule(bp, o, cnt, NULL, cmd_pos->type); + + cnt++; + + cmd_pos->data.macs_num--; + + DP(BNX2X_MSG_SP, "Deleting MAC. %d left,cnt is %d\n", + cmd_pos->data.macs_num, cnt); + + /* Break if we reached the maximum + * number of rules. + */ + if (cnt >= o->max_cmd_len) + break; + } + + *line_idx = cnt; + + /* If we cleared all bins - we are done */ + if (!cmd_pos->data.macs_num) + cmd_pos->done = true; +} + +static inline void bnx2x_mcast_hdl_pending_restore_e2(struct bnx2x *bp, + struct bnx2x_mcast_obj *o, struct bnx2x_pending_mcast_cmd *cmd_pos, + int *line_idx) +{ + cmd_pos->data.next_bin = o->hdl_restore(bp, o, cmd_pos->data.next_bin, + line_idx); + + if (cmd_pos->data.next_bin < 0) + /* If o->set_restore returned -1 we are done */ + cmd_pos->done = true; + else + /* Start from the next bin next time */ + cmd_pos->data.next_bin++; +} + +static inline int bnx2x_mcast_handle_pending_cmds_e2(struct bnx2x *bp, + struct bnx2x_mcast_ramrod_params *p) +{ + struct bnx2x_pending_mcast_cmd *cmd_pos, *cmd_pos_n; + int cnt = 0; + struct bnx2x_mcast_obj *o = p->mcast_obj; + + list_for_each_entry_safe(cmd_pos, cmd_pos_n, &o->pending_cmds_head, + link) { + switch (cmd_pos->type) { + case BNX2X_MCAST_CMD_ADD: + bnx2x_mcast_hdl_pending_add_e2(bp, o, cmd_pos, &cnt); + break; + + case BNX2X_MCAST_CMD_DEL: + bnx2x_mcast_hdl_pending_del_e2(bp, o, cmd_pos, &cnt); + break; + + case BNX2X_MCAST_CMD_RESTORE: + bnx2x_mcast_hdl_pending_restore_e2(bp, o, cmd_pos, + &cnt); + break; + + default: + BNX2X_ERR("Unknown command: %d\n", cmd_pos->type); + return -EINVAL; + } + + /* If the command has been completed - remove it from the list + * and free the memory + */ + if (cmd_pos->done) { + list_del(&cmd_pos->link); + kfree(cmd_pos); + } + + /* Break if we reached the maximum number of rules */ + if (cnt >= o->max_cmd_len) + break; + } + + return cnt; +} + +static inline void bnx2x_mcast_hdl_add(struct bnx2x *bp, + struct bnx2x_mcast_obj *o, struct bnx2x_mcast_ramrod_params *p, + int *line_idx) +{ + struct bnx2x_mcast_list_elem *mlist_pos; + union bnx2x_mcast_config_data cfg_data = {0}; + int cnt = *line_idx; + + list_for_each_entry(mlist_pos, &p->mcast_list, link) { + cfg_data.mac = mlist_pos->mac; + o->set_one_rule(bp, o, cnt, &cfg_data, BNX2X_MCAST_CMD_ADD); + + cnt++; + + DP(BNX2X_MSG_SP, "About to configure "BNX2X_MAC_FMT + " mcast MAC\n", + BNX2X_MAC_PRN_LIST(mlist_pos->mac)); + } + + *line_idx = cnt; +} + +static inline void bnx2x_mcast_hdl_del(struct bnx2x *bp, + struct bnx2x_mcast_obj *o, struct bnx2x_mcast_ramrod_params *p, + int *line_idx) +{ + int cnt = *line_idx, i; + + for (i = 0; i < p->mcast_list_len; i++) { + o->set_one_rule(bp, o, cnt, NULL, BNX2X_MCAST_CMD_DEL); + + cnt++; + + DP(BNX2X_MSG_SP, "Deleting MAC. %d left\n", + p->mcast_list_len - i - 1); + } + + *line_idx = cnt; +} + +/** + * bnx2x_mcast_handle_current_cmd - + * + * @bp: device handle + * @p: + * @cmd: + * @start_cnt: first line in the ramrod data that may be used + * + * This function is called iff there is enough place for the current command in + * the ramrod data. + * Returns number of lines filled in the ramrod data in total. + */ +static inline int bnx2x_mcast_handle_current_cmd(struct bnx2x *bp, + struct bnx2x_mcast_ramrod_params *p, int cmd, + int start_cnt) +{ + struct bnx2x_mcast_obj *o = p->mcast_obj; + int cnt = start_cnt; + + DP(BNX2X_MSG_SP, "p->mcast_list_len=%d\n", p->mcast_list_len); + + switch (cmd) { + case BNX2X_MCAST_CMD_ADD: + bnx2x_mcast_hdl_add(bp, o, p, &cnt); + break; + + case BNX2X_MCAST_CMD_DEL: + bnx2x_mcast_hdl_del(bp, o, p, &cnt); + break; + + case BNX2X_MCAST_CMD_RESTORE: + o->hdl_restore(bp, o, 0, &cnt); + break; + + default: + BNX2X_ERR("Unknown command: %d\n", cmd); + return -EINVAL; + } + + /* The current command has been handled */ + p->mcast_list_len = 0; + + return cnt; +} + +static int bnx2x_mcast_validate_e2(struct bnx2x *bp, + struct bnx2x_mcast_ramrod_params *p, + int cmd) +{ + struct bnx2x_mcast_obj *o = p->mcast_obj; + int reg_sz = o->get_registry_size(o); + + switch (cmd) { + /* DEL command deletes all currently configured MACs */ + case BNX2X_MCAST_CMD_DEL: + o->set_registry_size(o, 0); + /* Don't break */ + + /* RESTORE command will restore the entire multicast configuration */ + case BNX2X_MCAST_CMD_RESTORE: + /* Here we set the approximate amount of work to do, which in + * fact may be only less as some MACs in postponed ADD + * command(s) scheduled before this command may fall into + * the same bin and the actual number of bins set in the + * registry would be less than we estimated here. See + * bnx2x_mcast_set_one_rule_e2() for further details. + */ + p->mcast_list_len = reg_sz; + break; + + case BNX2X_MCAST_CMD_ADD: + case BNX2X_MCAST_CMD_CONT: + /* Here we assume that all new MACs will fall into new bins. + * However we will correct the real registry size after we + * handle all pending commands. + */ + o->set_registry_size(o, reg_sz + p->mcast_list_len); + break; + + default: + BNX2X_ERR("Unknown command: %d\n", cmd); + return -EINVAL; + + } + + /* Increase the total number of MACs pending to be configured */ + o->total_pending_num += p->mcast_list_len; + + return 0; +} + +static void bnx2x_mcast_revert_e2(struct bnx2x *bp, + struct bnx2x_mcast_ramrod_params *p, + int old_num_bins) +{ + struct bnx2x_mcast_obj *o = p->mcast_obj; + + o->set_registry_size(o, old_num_bins); + o->total_pending_num -= p->mcast_list_len; +} + +/** + * bnx2x_mcast_set_rdata_hdr_e2 - sets a header values + * + * @bp: device handle + * @p: + * @len: number of rules to handle + */ +static inline void bnx2x_mcast_set_rdata_hdr_e2(struct bnx2x *bp, + struct bnx2x_mcast_ramrod_params *p, + u8 len) +{ + struct bnx2x_raw_obj *r = &p->mcast_obj->raw; + struct eth_multicast_rules_ramrod_data *data = + (struct eth_multicast_rules_ramrod_data *)(r->rdata); + + data->header.echo = ((r->cid & BNX2X_SWCID_MASK) | + (BNX2X_FILTER_MCAST_PENDING << BNX2X_SWCID_SHIFT)); + data->header.rule_cnt = len; +} + +/** + * bnx2x_mcast_refresh_registry_e2 - recalculate the actual number of set bins + * + * @bp: device handle + * @o: + * + * Recalculate the actual number of set bins in the registry using Brian + * Kernighan's algorithm: it's execution complexity is as a number of set bins. + * + * returns 0 for the compliance with bnx2x_mcast_refresh_registry_e1(). + */ +static inline int bnx2x_mcast_refresh_registry_e2(struct bnx2x *bp, + struct bnx2x_mcast_obj *o) +{ + int i, cnt = 0; + u64 elem; + + for (i = 0; i < BNX2X_MCAST_VEC_SZ; i++) { + elem = o->registry.aprox_match.vec[i]; + for (; elem; cnt++) + elem &= elem - 1; + } + + o->set_registry_size(o, cnt); + + return 0; +} + +static int bnx2x_mcast_setup_e2(struct bnx2x *bp, + struct bnx2x_mcast_ramrod_params *p, + int cmd) +{ + struct bnx2x_raw_obj *raw = &p->mcast_obj->raw; + struct bnx2x_mcast_obj *o = p->mcast_obj; + struct eth_multicast_rules_ramrod_data *data = + (struct eth_multicast_rules_ramrod_data *)(raw->rdata); + int cnt = 0, rc; + + /* Reset the ramrod data buffer */ + memset(data, 0, sizeof(*data)); + + cnt = bnx2x_mcast_handle_pending_cmds_e2(bp, p); + + /* If there are no more pending commands - clear SCHEDULED state */ + if (list_empty(&o->pending_cmds_head)) + o->clear_sched(o); + + /* The below may be true iff there was enough room in ramrod + * data for all pending commands and for the current + * command. Otherwise the current command would have been added + * to the pending commands and p->mcast_list_len would have been + * zeroed. + */ + if (p->mcast_list_len > 0) + cnt = bnx2x_mcast_handle_current_cmd(bp, p, cmd, cnt); + + /* We've pulled out some MACs - update the total number of + * outstanding. + */ + o->total_pending_num -= cnt; + + /* send a ramrod */ + WARN_ON(o->total_pending_num < 0); + WARN_ON(cnt > o->max_cmd_len); + + bnx2x_mcast_set_rdata_hdr_e2(bp, p, (u8)cnt); + + /* Update a registry size if there are no more pending operations. + * + * We don't want to change the value of the registry size if there are + * pending operations because we want it to always be equal to the + * exact or the approximate number (see bnx2x_mcast_validate_e2()) of + * set bins after the last requested operation in order to properly + * evaluate the size of the next DEL/RESTORE operation. + * + * Note that we update the registry itself during command(s) handling + * - see bnx2x_mcast_set_one_rule_e2(). That's because for 57712 we + * aggregate multiple commands (ADD/DEL/RESTORE) into one ramrod but + * with a limited amount of update commands (per MAC/bin) and we don't + * know in this scope what the actual state of bins configuration is + * going to be after this ramrod. + */ + if (!o->total_pending_num) + bnx2x_mcast_refresh_registry_e2(bp, o); + + /* + * If CLEAR_ONLY was requested - don't send a ramrod and clear + * RAMROD_PENDING status immediately. + */ + if (test_bit(RAMROD_DRV_CLR_ONLY, &p->ramrod_flags)) { + raw->clear_pending(raw); + return 0; + } else { + /* + * No need for an explicit memory barrier here as long we would + * need to ensure the ordering of writing to the SPQ element + * and updating of the SPQ producer which involves a memory + * read and we will have to put a full memory barrier there + * (inside bnx2x_sp_post()). + */ + + /* Send a ramrod */ + rc = bnx2x_sp_post(bp, RAMROD_CMD_ID_ETH_MULTICAST_RULES, + raw->cid, U64_HI(raw->rdata_mapping), + U64_LO(raw->rdata_mapping), + ETH_CONNECTION_TYPE); + if (rc) + return rc; + + /* Ramrod completion is pending */ + return 1; + } +} + +static int bnx2x_mcast_validate_e1h(struct bnx2x *bp, + struct bnx2x_mcast_ramrod_params *p, + int cmd) +{ + /* Mark, that there is a work to do */ + if ((cmd == BNX2X_MCAST_CMD_DEL) || (cmd == BNX2X_MCAST_CMD_RESTORE)) + p->mcast_list_len = 1; + + return 0; +} + +static void bnx2x_mcast_revert_e1h(struct bnx2x *bp, + struct bnx2x_mcast_ramrod_params *p, + int old_num_bins) +{ + /* Do nothing */ +} + +#define BNX2X_57711_SET_MC_FILTER(filter, bit) \ +do { \ + (filter)[(bit) >> 5] |= (1 << ((bit) & 0x1f)); \ +} while (0) + +static inline void bnx2x_mcast_hdl_add_e1h(struct bnx2x *bp, + struct bnx2x_mcast_obj *o, + struct bnx2x_mcast_ramrod_params *p, + u32 *mc_filter) +{ + struct bnx2x_mcast_list_elem *mlist_pos; + int bit; + + list_for_each_entry(mlist_pos, &p->mcast_list, link) { + bit = bnx2x_mcast_bin_from_mac(mlist_pos->mac); + BNX2X_57711_SET_MC_FILTER(mc_filter, bit); + + DP(BNX2X_MSG_SP, "About to configure " + BNX2X_MAC_FMT" mcast MAC, bin %d\n", + BNX2X_MAC_PRN_LIST(mlist_pos->mac), bit); + + /* bookkeeping... */ + BIT_VEC64_SET_BIT(o->registry.aprox_match.vec, + bit); + } +} + +static inline void bnx2x_mcast_hdl_restore_e1h(struct bnx2x *bp, + struct bnx2x_mcast_obj *o, struct bnx2x_mcast_ramrod_params *p, + u32 *mc_filter) +{ + int bit; + + for (bit = bnx2x_mcast_get_next_bin(o, 0); + bit >= 0; + bit = bnx2x_mcast_get_next_bin(o, bit + 1)) { + BNX2X_57711_SET_MC_FILTER(mc_filter, bit); + DP(BNX2X_MSG_SP, "About to set bin %d\n", bit); + } +} + +/* On 57711 we write the multicast MACs' aproximate match + * table by directly into the TSTORM's internal RAM. So we don't + * really need to handle any tricks to make it work. + */ +static int bnx2x_mcast_setup_e1h(struct bnx2x *bp, + struct bnx2x_mcast_ramrod_params *p, + int cmd) +{ + int i; + struct bnx2x_mcast_obj *o = p->mcast_obj; + struct bnx2x_raw_obj *r = &o->raw; + + /* If CLEAR_ONLY has been requested - clear the registry + * and clear a pending bit. + */ + if (!test_bit(RAMROD_DRV_CLR_ONLY, &p->ramrod_flags)) { + u32 mc_filter[MC_HASH_SIZE] = {0}; + + /* Set the multicast filter bits before writing it into + * the internal memory. + */ + switch (cmd) { + case BNX2X_MCAST_CMD_ADD: + bnx2x_mcast_hdl_add_e1h(bp, o, p, mc_filter); + break; + + case BNX2X_MCAST_CMD_DEL: + DP(BNX2X_MSG_SP, "Invalidating multicast " + "MACs configuration\n"); + + /* clear the registry */ + memset(o->registry.aprox_match.vec, 0, + sizeof(o->registry.aprox_match.vec)); + break; + + case BNX2X_MCAST_CMD_RESTORE: + bnx2x_mcast_hdl_restore_e1h(bp, o, p, mc_filter); + break; + + default: + BNX2X_ERR("Unknown command: %d\n", cmd); + return -EINVAL; + } + + /* Set the mcast filter in the internal memory */ + for (i = 0; i < MC_HASH_SIZE; i++) + REG_WR(bp, MC_HASH_OFFSET(bp, i), mc_filter[i]); + } else + /* clear the registry */ + memset(o->registry.aprox_match.vec, 0, + sizeof(o->registry.aprox_match.vec)); + + /* We are done */ + r->clear_pending(r); + + return 0; +} + +static int bnx2x_mcast_validate_e1(struct bnx2x *bp, + struct bnx2x_mcast_ramrod_params *p, + int cmd) +{ + struct bnx2x_mcast_obj *o = p->mcast_obj; + int reg_sz = o->get_registry_size(o); + + switch (cmd) { + /* DEL command deletes all currently configured MACs */ + case BNX2X_MCAST_CMD_DEL: + o->set_registry_size(o, 0); + /* Don't break */ + + /* RESTORE command will restore the entire multicast configuration */ + case BNX2X_MCAST_CMD_RESTORE: + p->mcast_list_len = reg_sz; + DP(BNX2X_MSG_SP, "Command %d, p->mcast_list_len=%d\n", + cmd, p->mcast_list_len); + break; + + case BNX2X_MCAST_CMD_ADD: + case BNX2X_MCAST_CMD_CONT: + /* Multicast MACs on 57710 are configured as unicast MACs and + * there is only a limited number of CAM entries for that + * matter. + */ + if (p->mcast_list_len > o->max_cmd_len) { + BNX2X_ERR("Can't configure more than %d multicast MACs" + "on 57710\n", o->max_cmd_len); + return -EINVAL; + } + /* Every configured MAC should be cleared if DEL command is + * called. Only the last ADD command is relevant as long as + * every ADD commands overrides the previous configuration. + */ + DP(BNX2X_MSG_SP, "p->mcast_list_len=%d\n", p->mcast_list_len); + if (p->mcast_list_len > 0) + o->set_registry_size(o, p->mcast_list_len); + + break; + + default: + BNX2X_ERR("Unknown command: %d\n", cmd); + return -EINVAL; + + } + + /* We want to ensure that commands are executed one by one for 57710. + * Therefore each none-empty command will consume o->max_cmd_len. + */ + if (p->mcast_list_len) + o->total_pending_num += o->max_cmd_len; + + return 0; +} + +static void bnx2x_mcast_revert_e1(struct bnx2x *bp, + struct bnx2x_mcast_ramrod_params *p, + int old_num_macs) +{ + struct bnx2x_mcast_obj *o = p->mcast_obj; + + o->set_registry_size(o, old_num_macs); + + /* If current command hasn't been handled yet and we are + * here means that it's meant to be dropped and we have to + * update the number of outstandling MACs accordingly. + */ + if (p->mcast_list_len) + o->total_pending_num -= o->max_cmd_len; +} + +static void bnx2x_mcast_set_one_rule_e1(struct bnx2x *bp, + struct bnx2x_mcast_obj *o, int idx, + union bnx2x_mcast_config_data *cfg_data, + int cmd) +{ + struct bnx2x_raw_obj *r = &o->raw; + struct mac_configuration_cmd *data = + (struct mac_configuration_cmd *)(r->rdata); + + /* copy mac */ + if ((cmd == BNX2X_MCAST_CMD_ADD) || (cmd == BNX2X_MCAST_CMD_RESTORE)) { + bnx2x_set_fw_mac_addr(&data->config_table[idx].msb_mac_addr, + &data->config_table[idx].middle_mac_addr, + &data->config_table[idx].lsb_mac_addr, + cfg_data->mac); + + data->config_table[idx].vlan_id = 0; + data->config_table[idx].pf_id = r->func_id; + data->config_table[idx].clients_bit_vector = + cpu_to_le32(1 << r->cl_id); + + SET_FLAG(data->config_table[idx].flags, + MAC_CONFIGURATION_ENTRY_ACTION_TYPE, + T_ETH_MAC_COMMAND_SET); + } +} + +/** + * bnx2x_mcast_set_rdata_hdr_e1 - set header values in mac_configuration_cmd + * + * @bp: device handle + * @p: + * @len: number of rules to handle + */ +static inline void bnx2x_mcast_set_rdata_hdr_e1(struct bnx2x *bp, + struct bnx2x_mcast_ramrod_params *p, + u8 len) +{ + struct bnx2x_raw_obj *r = &p->mcast_obj->raw; + struct mac_configuration_cmd *data = + (struct mac_configuration_cmd *)(r->rdata); + + u8 offset = (CHIP_REV_IS_SLOW(bp) ? + BNX2X_MAX_EMUL_MULTI*(1 + r->func_id) : + BNX2X_MAX_MULTICAST*(1 + r->func_id)); + + data->hdr.offset = offset; + data->hdr.client_id = 0xff; + data->hdr.echo = ((r->cid & BNX2X_SWCID_MASK) | + (BNX2X_FILTER_MCAST_PENDING << BNX2X_SWCID_SHIFT)); + data->hdr.length = len; +} + +/** + * bnx2x_mcast_handle_restore_cmd_e1 - restore command for 57710 + * + * @bp: device handle + * @o: + * @start_idx: index in the registry to start from + * @rdata_idx: index in the ramrod data to start from + * + * restore command for 57710 is like all other commands - always a stand alone + * command - start_idx and rdata_idx will always be 0. This function will always + * succeed. + * returns -1 to comply with 57712 variant. + */ +static inline int bnx2x_mcast_handle_restore_cmd_e1( + struct bnx2x *bp, struct bnx2x_mcast_obj *o , int start_idx, + int *rdata_idx) +{ + struct bnx2x_mcast_mac_elem *elem; + int i = 0; + union bnx2x_mcast_config_data cfg_data = {0}; + + /* go through the registry and configure the MACs from it. */ + list_for_each_entry(elem, &o->registry.exact_match.macs, link) { + cfg_data.mac = &elem->mac[0]; + o->set_one_rule(bp, o, i, &cfg_data, BNX2X_MCAST_CMD_RESTORE); + + i++; + + DP(BNX2X_MSG_SP, "About to configure "BNX2X_MAC_FMT + " mcast MAC\n", + BNX2X_MAC_PRN_LIST(cfg_data.mac)); + } + + *rdata_idx = i; + + return -1; +} + + +static inline int bnx2x_mcast_handle_pending_cmds_e1( + struct bnx2x *bp, struct bnx2x_mcast_ramrod_params *p) +{ + struct bnx2x_pending_mcast_cmd *cmd_pos; + struct bnx2x_mcast_mac_elem *pmac_pos; + struct bnx2x_mcast_obj *o = p->mcast_obj; + union bnx2x_mcast_config_data cfg_data = {0}; + int cnt = 0; + + + /* If nothing to be done - return */ + if (list_empty(&o->pending_cmds_head)) + return 0; + + /* Handle the first command */ + cmd_pos = list_first_entry(&o->pending_cmds_head, + struct bnx2x_pending_mcast_cmd, link); + + switch (cmd_pos->type) { + case BNX2X_MCAST_CMD_ADD: + list_for_each_entry(pmac_pos, &cmd_pos->data.macs_head, link) { + cfg_data.mac = &pmac_pos->mac[0]; + o->set_one_rule(bp, o, cnt, &cfg_data, cmd_pos->type); + + cnt++; + + DP(BNX2X_MSG_SP, "About to configure "BNX2X_MAC_FMT + " mcast MAC\n", + BNX2X_MAC_PRN_LIST(pmac_pos->mac)); + } + break; + + case BNX2X_MCAST_CMD_DEL: + cnt = cmd_pos->data.macs_num; + DP(BNX2X_MSG_SP, "About to delete %d multicast MACs\n", cnt); + break; + + case BNX2X_MCAST_CMD_RESTORE: + o->hdl_restore(bp, o, 0, &cnt); + break; + + default: + BNX2X_ERR("Unknown command: %d\n", cmd_pos->type); + return -EINVAL; + } + + list_del(&cmd_pos->link); + kfree(cmd_pos); + + return cnt; +} + +/** + * bnx2x_get_fw_mac_addr - revert the bnx2x_set_fw_mac_addr(). + * + * @fw_hi: + * @fw_mid: + * @fw_lo: + * @mac: + */ +static inline void bnx2x_get_fw_mac_addr(__le16 *fw_hi, __le16 *fw_mid, + __le16 *fw_lo, u8 *mac) +{ + mac[1] = ((u8 *)fw_hi)[0]; + mac[0] = ((u8 *)fw_hi)[1]; + mac[3] = ((u8 *)fw_mid)[0]; + mac[2] = ((u8 *)fw_mid)[1]; + mac[5] = ((u8 *)fw_lo)[0]; + mac[4] = ((u8 *)fw_lo)[1]; +} + +/** + * bnx2x_mcast_refresh_registry_e1 - + * + * @bp: device handle + * @cnt: + * + * Check the ramrod data first entry flag to see if it's a DELETE or ADD command + * and update the registry correspondingly: if ADD - allocate a memory and add + * the entries to the registry (list), if DELETE - clear the registry and free + * the memory. + */ +static inline int bnx2x_mcast_refresh_registry_e1(struct bnx2x *bp, + struct bnx2x_mcast_obj *o) +{ + struct bnx2x_raw_obj *raw = &o->raw; + struct bnx2x_mcast_mac_elem *elem; + struct mac_configuration_cmd *data = + (struct mac_configuration_cmd *)(raw->rdata); + + /* If first entry contains a SET bit - the command was ADD, + * otherwise - DEL_ALL + */ + if (GET_FLAG(data->config_table[0].flags, + MAC_CONFIGURATION_ENTRY_ACTION_TYPE)) { + int i, len = data->hdr.length; + + /* Break if it was a RESTORE command */ + if (!list_empty(&o->registry.exact_match.macs)) + return 0; + + elem = kzalloc(sizeof(*elem)*len, GFP_ATOMIC); + if (!elem) { + BNX2X_ERR("Failed to allocate registry memory\n"); + return -ENOMEM; + } + + for (i = 0; i < len; i++, elem++) { + bnx2x_get_fw_mac_addr( + &data->config_table[i].msb_mac_addr, + &data->config_table[i].middle_mac_addr, + &data->config_table[i].lsb_mac_addr, + elem->mac); + DP(BNX2X_MSG_SP, "Adding registry entry for [" + BNX2X_MAC_FMT"]\n", + BNX2X_MAC_PRN_LIST(elem->mac)); + list_add_tail(&elem->link, + &o->registry.exact_match.macs); + } + } else { + elem = list_first_entry(&o->registry.exact_match.macs, + struct bnx2x_mcast_mac_elem, link); + DP(BNX2X_MSG_SP, "Deleting a registry\n"); + kfree(elem); + INIT_LIST_HEAD(&o->registry.exact_match.macs); + } + + return 0; +} + +static int bnx2x_mcast_setup_e1(struct bnx2x *bp, + struct bnx2x_mcast_ramrod_params *p, + int cmd) +{ + struct bnx2x_mcast_obj *o = p->mcast_obj; + struct bnx2x_raw_obj *raw = &o->raw; + struct mac_configuration_cmd *data = + (struct mac_configuration_cmd *)(raw->rdata); + int cnt = 0, i, rc; + + /* Reset the ramrod data buffer */ + memset(data, 0, sizeof(*data)); + + /* First set all entries as invalid */ + for (i = 0; i < o->max_cmd_len ; i++) + SET_FLAG(data->config_table[i].flags, + MAC_CONFIGURATION_ENTRY_ACTION_TYPE, + T_ETH_MAC_COMMAND_INVALIDATE); + + /* Handle pending commands first */ + cnt = bnx2x_mcast_handle_pending_cmds_e1(bp, p); + + /* If there are no more pending commands - clear SCHEDULED state */ + if (list_empty(&o->pending_cmds_head)) + o->clear_sched(o); + + /* The below may be true iff there were no pending commands */ + if (!cnt) + cnt = bnx2x_mcast_handle_current_cmd(bp, p, cmd, 0); + + /* For 57710 every command has o->max_cmd_len length to ensure that + * commands are done one at a time. + */ + o->total_pending_num -= o->max_cmd_len; + + /* send a ramrod */ + + WARN_ON(cnt > o->max_cmd_len); + + /* Set ramrod header (in particular, a number of entries to update) */ + bnx2x_mcast_set_rdata_hdr_e1(bp, p, (u8)cnt); + + /* update a registry: we need the registry contents to be always up + * to date in order to be able to execute a RESTORE opcode. Here + * we use the fact that for 57710 we sent one command at a time + * hence we may take the registry update out of the command handling + * and do it in a simpler way here. + */ + rc = bnx2x_mcast_refresh_registry_e1(bp, o); + if (rc) + return rc; + + /* + * If CLEAR_ONLY was requested - don't send a ramrod and clear + * RAMROD_PENDING status immediately. + */ + if (test_bit(RAMROD_DRV_CLR_ONLY, &p->ramrod_flags)) { + raw->clear_pending(raw); + return 0; + } else { + /* + * No need for an explicit memory barrier here as long we would + * need to ensure the ordering of writing to the SPQ element + * and updating of the SPQ producer which involves a memory + * read and we will have to put a full memory barrier there + * (inside bnx2x_sp_post()). + */ + + /* Send a ramrod */ + rc = bnx2x_sp_post(bp, RAMROD_CMD_ID_ETH_SET_MAC, raw->cid, + U64_HI(raw->rdata_mapping), + U64_LO(raw->rdata_mapping), + ETH_CONNECTION_TYPE); + if (rc) + return rc; + + /* Ramrod completion is pending */ + return 1; + } + +} + +static int bnx2x_mcast_get_registry_size_exact(struct bnx2x_mcast_obj *o) +{ + return o->registry.exact_match.num_macs_set; +} + +static int bnx2x_mcast_get_registry_size_aprox(struct bnx2x_mcast_obj *o) +{ + return o->registry.aprox_match.num_bins_set; +} + +static void bnx2x_mcast_set_registry_size_exact(struct bnx2x_mcast_obj *o, + int n) +{ + o->registry.exact_match.num_macs_set = n; +} + +static void bnx2x_mcast_set_registry_size_aprox(struct bnx2x_mcast_obj *o, + int n) +{ + o->registry.aprox_match.num_bins_set = n; +} + +int bnx2x_config_mcast(struct bnx2x *bp, + struct bnx2x_mcast_ramrod_params *p, + int cmd) +{ + struct bnx2x_mcast_obj *o = p->mcast_obj; + struct bnx2x_raw_obj *r = &o->raw; + int rc = 0, old_reg_size; + + /* This is needed to recover number of currently configured mcast macs + * in case of failure. + */ + old_reg_size = o->get_registry_size(o); + + /* Do some calculations and checks */ + rc = o->validate(bp, p, cmd); + if (rc) + return rc; + + /* Return if there is no work to do */ + if ((!p->mcast_list_len) && (!o->check_sched(o))) + return 0; + + DP(BNX2X_MSG_SP, "o->total_pending_num=%d p->mcast_list_len=%d " + "o->max_cmd_len=%d\n", o->total_pending_num, + p->mcast_list_len, o->max_cmd_len); + + /* Enqueue the current command to the pending list if we can't complete + * it in the current iteration + */ + if (r->check_pending(r) || + ((o->max_cmd_len > 0) && (o->total_pending_num > o->max_cmd_len))) { + rc = o->enqueue_cmd(bp, p->mcast_obj, p, cmd); + if (rc < 0) + goto error_exit1; + + /* As long as the current command is in a command list we + * don't need to handle it separately. + */ + p->mcast_list_len = 0; + } + + if (!r->check_pending(r)) { + + /* Set 'pending' state */ + r->set_pending(r); + + /* Configure the new classification in the chip */ + rc = o->config_mcast(bp, p, cmd); + if (rc < 0) + goto error_exit2; + + /* Wait for a ramrod completion if was requested */ + if (test_bit(RAMROD_COMP_WAIT, &p->ramrod_flags)) + rc = o->wait_comp(bp, o); + } + + return rc; + +error_exit2: + r->clear_pending(r); + +error_exit1: + o->revert(bp, p, old_reg_size); + + return rc; +} + +static void bnx2x_mcast_clear_sched(struct bnx2x_mcast_obj *o) +{ + smp_mb__before_clear_bit(); + clear_bit(o->sched_state, o->raw.pstate); + smp_mb__after_clear_bit(); +} + +static void bnx2x_mcast_set_sched(struct bnx2x_mcast_obj *o) +{ + smp_mb__before_clear_bit(); + set_bit(o->sched_state, o->raw.pstate); + smp_mb__after_clear_bit(); +} + +static bool bnx2x_mcast_check_sched(struct bnx2x_mcast_obj *o) +{ + return !!test_bit(o->sched_state, o->raw.pstate); +} + +static bool bnx2x_mcast_check_pending(struct bnx2x_mcast_obj *o) +{ + return o->raw.check_pending(&o->raw) || o->check_sched(o); +} + +void bnx2x_init_mcast_obj(struct bnx2x *bp, + struct bnx2x_mcast_obj *mcast_obj, + u8 mcast_cl_id, u32 mcast_cid, u8 func_id, + u8 engine_id, void *rdata, dma_addr_t rdata_mapping, + int state, unsigned long *pstate, bnx2x_obj_type type) +{ + memset(mcast_obj, 0, sizeof(*mcast_obj)); + + bnx2x_init_raw_obj(&mcast_obj->raw, mcast_cl_id, mcast_cid, func_id, + rdata, rdata_mapping, state, pstate, type); + + mcast_obj->engine_id = engine_id; + + INIT_LIST_HEAD(&mcast_obj->pending_cmds_head); + + mcast_obj->sched_state = BNX2X_FILTER_MCAST_SCHED; + mcast_obj->check_sched = bnx2x_mcast_check_sched; + mcast_obj->set_sched = bnx2x_mcast_set_sched; + mcast_obj->clear_sched = bnx2x_mcast_clear_sched; + + if (CHIP_IS_E1(bp)) { + mcast_obj->config_mcast = bnx2x_mcast_setup_e1; + mcast_obj->enqueue_cmd = bnx2x_mcast_enqueue_cmd; + mcast_obj->hdl_restore = + bnx2x_mcast_handle_restore_cmd_e1; + mcast_obj->check_pending = bnx2x_mcast_check_pending; + + if (CHIP_REV_IS_SLOW(bp)) + mcast_obj->max_cmd_len = BNX2X_MAX_EMUL_MULTI; + else + mcast_obj->max_cmd_len = BNX2X_MAX_MULTICAST; + + mcast_obj->wait_comp = bnx2x_mcast_wait; + mcast_obj->set_one_rule = bnx2x_mcast_set_one_rule_e1; + mcast_obj->validate = bnx2x_mcast_validate_e1; + mcast_obj->revert = bnx2x_mcast_revert_e1; + mcast_obj->get_registry_size = + bnx2x_mcast_get_registry_size_exact; + mcast_obj->set_registry_size = + bnx2x_mcast_set_registry_size_exact; + + /* 57710 is the only chip that uses the exact match for mcast + * at the moment. + */ + INIT_LIST_HEAD(&mcast_obj->registry.exact_match.macs); + + } else if (CHIP_IS_E1H(bp)) { + mcast_obj->config_mcast = bnx2x_mcast_setup_e1h; + mcast_obj->enqueue_cmd = NULL; + mcast_obj->hdl_restore = NULL; + mcast_obj->check_pending = bnx2x_mcast_check_pending; + + /* 57711 doesn't send a ramrod, so it has unlimited credit + * for one command. + */ + mcast_obj->max_cmd_len = -1; + mcast_obj->wait_comp = bnx2x_mcast_wait; + mcast_obj->set_one_rule = NULL; + mcast_obj->validate = bnx2x_mcast_validate_e1h; + mcast_obj->revert = bnx2x_mcast_revert_e1h; + mcast_obj->get_registry_size = + bnx2x_mcast_get_registry_size_aprox; + mcast_obj->set_registry_size = + bnx2x_mcast_set_registry_size_aprox; + } else { + mcast_obj->config_mcast = bnx2x_mcast_setup_e2; + mcast_obj->enqueue_cmd = bnx2x_mcast_enqueue_cmd; + mcast_obj->hdl_restore = + bnx2x_mcast_handle_restore_cmd_e2; + mcast_obj->check_pending = bnx2x_mcast_check_pending; + /* TODO: There should be a proper HSI define for this number!!! + */ + mcast_obj->max_cmd_len = 16; + mcast_obj->wait_comp = bnx2x_mcast_wait; + mcast_obj->set_one_rule = bnx2x_mcast_set_one_rule_e2; + mcast_obj->validate = bnx2x_mcast_validate_e2; + mcast_obj->revert = bnx2x_mcast_revert_e2; + mcast_obj->get_registry_size = + bnx2x_mcast_get_registry_size_aprox; + mcast_obj->set_registry_size = + bnx2x_mcast_set_registry_size_aprox; + } +} + +/*************************** Credit handling **********************************/ + +/** + * atomic_add_ifless - add if the result is less than a given value. + * + * @v: pointer of type atomic_t + * @a: the amount to add to v... + * @u: ...if (v + a) is less than u. + * + * returns true if (v + a) was less than u, and false otherwise. + * + */ +static inline bool __atomic_add_ifless(atomic_t *v, int a, int u) +{ + int c, old; + + c = atomic_read(v); + for (;;) { + if (unlikely(c + a >= u)) + return false; + + old = atomic_cmpxchg((v), c, c + a); + if (likely(old == c)) + break; + c = old; + } + + return true; +} + +/** + * atomic_dec_ifmoe - dec if the result is more or equal than a given value. + * + * @v: pointer of type atomic_t + * @a: the amount to dec from v... + * @u: ...if (v - a) is more or equal than u. + * + * returns true if (v - a) was more or equal than u, and false + * otherwise. + */ +static inline bool __atomic_dec_ifmoe(atomic_t *v, int a, int u) +{ + int c, old; + + c = atomic_read(v); + for (;;) { + if (unlikely(c - a < u)) + return false; + + old = atomic_cmpxchg((v), c, c - a); + if (likely(old == c)) + break; + c = old; + } + + return true; +} + +static bool bnx2x_credit_pool_get(struct bnx2x_credit_pool_obj *o, int cnt) +{ + bool rc; + + smp_mb(); + rc = __atomic_dec_ifmoe(&o->credit, cnt, 0); + smp_mb(); + + return rc; +} + +static bool bnx2x_credit_pool_put(struct bnx2x_credit_pool_obj *o, int cnt) +{ + bool rc; + + smp_mb(); + + /* Don't let to refill if credit + cnt > pool_sz */ + rc = __atomic_add_ifless(&o->credit, cnt, o->pool_sz + 1); + + smp_mb(); + + return rc; +} + +static int bnx2x_credit_pool_check(struct bnx2x_credit_pool_obj *o) +{ + int cur_credit; + + smp_mb(); + cur_credit = atomic_read(&o->credit); + + return cur_credit; +} + +static bool bnx2x_credit_pool_always_true(struct bnx2x_credit_pool_obj *o, + int cnt) +{ + return true; +} + + +static bool bnx2x_credit_pool_get_entry( + struct bnx2x_credit_pool_obj *o, + int *offset) +{ + int idx, vec, i; + + *offset = -1; + + /* Find "internal cam-offset" then add to base for this object... */ + for (vec = 0; vec < BNX2X_POOL_VEC_SIZE; vec++) { + + /* Skip the current vector if there are no free entries in it */ + if (!o->pool_mirror[vec]) + continue; + + /* If we've got here we are going to find a free entry */ + for (idx = vec * BNX2X_POOL_VEC_SIZE, i = 0; + i < BIT_VEC64_ELEM_SZ; idx++, i++) + + if (BIT_VEC64_TEST_BIT(o->pool_mirror, idx)) { + /* Got one!! */ + BIT_VEC64_CLEAR_BIT(o->pool_mirror, idx); + *offset = o->base_pool_offset + idx; + return true; + } + } + + return false; +} + +static bool bnx2x_credit_pool_put_entry( + struct bnx2x_credit_pool_obj *o, + int offset) +{ + if (offset < o->base_pool_offset) + return false; + + offset -= o->base_pool_offset; + + if (offset >= o->pool_sz) + return false; + + /* Return the entry to the pool */ + BIT_VEC64_SET_BIT(o->pool_mirror, offset); + + return true; +} + +static bool bnx2x_credit_pool_put_entry_always_true( + struct bnx2x_credit_pool_obj *o, + int offset) +{ + return true; +} + +static bool bnx2x_credit_pool_get_entry_always_true( + struct bnx2x_credit_pool_obj *o, + int *offset) +{ + *offset = -1; + return true; +} +/** + * bnx2x_init_credit_pool - initialize credit pool internals. + * + * @p: + * @base: Base entry in the CAM to use. + * @credit: pool size. + * + * If base is negative no CAM entries handling will be performed. + * If credit is negative pool operations will always succeed (unlimited pool). + * + */ +static inline void bnx2x_init_credit_pool(struct bnx2x_credit_pool_obj *p, + int base, int credit) +{ + /* Zero the object first */ + memset(p, 0, sizeof(*p)); + + /* Set the table to all 1s */ + memset(&p->pool_mirror, 0xff, sizeof(p->pool_mirror)); + + /* Init a pool as full */ + atomic_set(&p->credit, credit); + + /* The total poll size */ + p->pool_sz = credit; + + p->base_pool_offset = base; + + /* Commit the change */ + smp_mb(); + + p->check = bnx2x_credit_pool_check; + + /* if pool credit is negative - disable the checks */ + if (credit >= 0) { + p->put = bnx2x_credit_pool_put; + p->get = bnx2x_credit_pool_get; + p->put_entry = bnx2x_credit_pool_put_entry; + p->get_entry = bnx2x_credit_pool_get_entry; + } else { + p->put = bnx2x_credit_pool_always_true; + p->get = bnx2x_credit_pool_always_true; + p->put_entry = bnx2x_credit_pool_put_entry_always_true; + p->get_entry = bnx2x_credit_pool_get_entry_always_true; + } + + /* If base is negative - disable entries handling */ + if (base < 0) { + p->put_entry = bnx2x_credit_pool_put_entry_always_true; + p->get_entry = bnx2x_credit_pool_get_entry_always_true; + } +} + +void bnx2x_init_mac_credit_pool(struct bnx2x *bp, + struct bnx2x_credit_pool_obj *p, u8 func_id, + u8 func_num) +{ +/* TODO: this will be defined in consts as well... */ +#define BNX2X_CAM_SIZE_EMUL 5 + + int cam_sz; + + if (CHIP_IS_E1(bp)) { + /* In E1, Multicast is saved in cam... */ + if (!CHIP_REV_IS_SLOW(bp)) + cam_sz = (MAX_MAC_CREDIT_E1 / 2) - BNX2X_MAX_MULTICAST; + else + cam_sz = BNX2X_CAM_SIZE_EMUL - BNX2X_MAX_EMUL_MULTI; + + bnx2x_init_credit_pool(p, func_id * cam_sz, cam_sz); + + } else if (CHIP_IS_E1H(bp)) { + /* CAM credit is equaly divided between all active functions + * on the PORT!. + */ + if ((func_num > 0)) { + if (!CHIP_REV_IS_SLOW(bp)) + cam_sz = (MAX_MAC_CREDIT_E1H / (2*func_num)); + else + cam_sz = BNX2X_CAM_SIZE_EMUL; + bnx2x_init_credit_pool(p, func_id * cam_sz, cam_sz); + } else { + /* this should never happen! Block MAC operations. */ + bnx2x_init_credit_pool(p, 0, 0); + } + + } else { + + /* + * CAM credit is equaly divided between all active functions + * on the PATH. + */ + if ((func_num > 0)) { + if (!CHIP_REV_IS_SLOW(bp)) + cam_sz = (MAX_MAC_CREDIT_E2 / func_num); + else + cam_sz = BNX2X_CAM_SIZE_EMUL; + + /* + * No need for CAM entries handling for 57712 and + * newer. + */ + bnx2x_init_credit_pool(p, -1, cam_sz); + } else { + /* this should never happen! Block MAC operations. */ + bnx2x_init_credit_pool(p, 0, 0); + } + + } +} + +void bnx2x_init_vlan_credit_pool(struct bnx2x *bp, + struct bnx2x_credit_pool_obj *p, + u8 func_id, + u8 func_num) +{ + if (CHIP_IS_E1x(bp)) { + /* + * There is no VLAN credit in HW on 57710 and 57711 only + * MAC / MAC-VLAN can be set + */ + bnx2x_init_credit_pool(p, 0, -1); + } else { + /* + * CAM credit is equaly divided between all active functions + * on the PATH. + */ + if (func_num > 0) { + int credit = MAX_VLAN_CREDIT_E2 / func_num; + bnx2x_init_credit_pool(p, func_id * credit, credit); + } else + /* this should never happen! Block VLAN operations. */ + bnx2x_init_credit_pool(p, 0, 0); + } +} + +/****************** RSS Configuration ******************/ +/** + * bnx2x_debug_print_ind_table - prints the indirection table configuration. + * + * @bp: driver hanlde + * @p: pointer to rss configuration + * + * Prints it when NETIF_MSG_IFUP debug level is configured. + */ +static inline void bnx2x_debug_print_ind_table(struct bnx2x *bp, + struct bnx2x_config_rss_params *p) +{ + int i; + + DP(BNX2X_MSG_SP, "Setting indirection table to:\n"); + DP(BNX2X_MSG_SP, "0x0000: "); + for (i = 0; i < T_ETH_INDIRECTION_TABLE_SIZE; i++) { + DP_CONT(BNX2X_MSG_SP, "0x%02x ", p->ind_table[i]); + + /* Print 4 bytes in a line */ + if ((i + 1 < T_ETH_INDIRECTION_TABLE_SIZE) && + (((i + 1) & 0x3) == 0)) { + DP_CONT(BNX2X_MSG_SP, "\n"); + DP(BNX2X_MSG_SP, "0x%04x: ", i + 1); + } + } + + DP_CONT(BNX2X_MSG_SP, "\n"); +} + +/** + * bnx2x_setup_rss - configure RSS + * + * @bp: device handle + * @p: rss configuration + * + * sends on UPDATE ramrod for that matter. + */ +static int bnx2x_setup_rss(struct bnx2x *bp, + struct bnx2x_config_rss_params *p) +{ + struct bnx2x_rss_config_obj *o = p->rss_obj; + struct bnx2x_raw_obj *r = &o->raw; + struct eth_rss_update_ramrod_data *data = + (struct eth_rss_update_ramrod_data *)(r->rdata); + u8 rss_mode = 0; + int rc; + + memset(data, 0, sizeof(*data)); + + DP(BNX2X_MSG_SP, "Configuring RSS\n"); + + /* Set an echo field */ + data->echo = (r->cid & BNX2X_SWCID_MASK) | + (r->state << BNX2X_SWCID_SHIFT); + + /* RSS mode */ + if (test_bit(BNX2X_RSS_MODE_DISABLED, &p->rss_flags)) + rss_mode = ETH_RSS_MODE_DISABLED; + else if (test_bit(BNX2X_RSS_MODE_REGULAR, &p->rss_flags)) + rss_mode = ETH_RSS_MODE_REGULAR; + else if (test_bit(BNX2X_RSS_MODE_VLAN_PRI, &p->rss_flags)) + rss_mode = ETH_RSS_MODE_VLAN_PRI; + else if (test_bit(BNX2X_RSS_MODE_E1HOV_PRI, &p->rss_flags)) + rss_mode = ETH_RSS_MODE_E1HOV_PRI; + else if (test_bit(BNX2X_RSS_MODE_IP_DSCP, &p->rss_flags)) + rss_mode = ETH_RSS_MODE_IP_DSCP; + + data->rss_mode = rss_mode; + + DP(BNX2X_MSG_SP, "rss_mode=%d\n", rss_mode); + + /* RSS capabilities */ + if (test_bit(BNX2X_RSS_IPV4, &p->rss_flags)) + data->capabilities |= + ETH_RSS_UPDATE_RAMROD_DATA_IPV4_CAPABILITY; + + if (test_bit(BNX2X_RSS_IPV4_TCP, &p->rss_flags)) + data->capabilities |= + ETH_RSS_UPDATE_RAMROD_DATA_IPV4_TCP_CAPABILITY; + + if (test_bit(BNX2X_RSS_IPV6, &p->rss_flags)) + data->capabilities |= + ETH_RSS_UPDATE_RAMROD_DATA_IPV6_CAPABILITY; + + if (test_bit(BNX2X_RSS_IPV6_TCP, &p->rss_flags)) + data->capabilities |= + ETH_RSS_UPDATE_RAMROD_DATA_IPV6_TCP_CAPABILITY; + + /* Hashing mask */ + data->rss_result_mask = p->rss_result_mask; + + /* RSS engine ID */ + data->rss_engine_id = o->engine_id; + + DP(BNX2X_MSG_SP, "rss_engine_id=%d\n", data->rss_engine_id); + + /* Indirection table */ + memcpy(data->indirection_table, p->ind_table, + T_ETH_INDIRECTION_TABLE_SIZE); + + /* Remember the last configuration */ + memcpy(o->ind_table, p->ind_table, T_ETH_INDIRECTION_TABLE_SIZE); + + /* Print the indirection table */ + if (netif_msg_ifup(bp)) + bnx2x_debug_print_ind_table(bp, p); + + /* RSS keys */ + if (test_bit(BNX2X_RSS_SET_SRCH, &p->rss_flags)) { + memcpy(&data->rss_key[0], &p->rss_key[0], + sizeof(data->rss_key)); + data->capabilities |= ETH_RSS_UPDATE_RAMROD_DATA_UPDATE_RSS_KEY; + } + + /* + * No need for an explicit memory barrier here as long we would + * need to ensure the ordering of writing to the SPQ element + * and updating of the SPQ producer which involves a memory + * read and we will have to put a full memory barrier there + * (inside bnx2x_sp_post()). + */ + + /* Send a ramrod */ + rc = bnx2x_sp_post(bp, RAMROD_CMD_ID_ETH_RSS_UPDATE, r->cid, + U64_HI(r->rdata_mapping), + U64_LO(r->rdata_mapping), + ETH_CONNECTION_TYPE); + + if (rc < 0) + return rc; + + return 1; +} + +void bnx2x_get_rss_ind_table(struct bnx2x_rss_config_obj *rss_obj, + u8 *ind_table) +{ + memcpy(ind_table, rss_obj->ind_table, sizeof(rss_obj->ind_table)); +} + +int bnx2x_config_rss(struct bnx2x *bp, + struct bnx2x_config_rss_params *p) +{ + int rc; + struct bnx2x_rss_config_obj *o = p->rss_obj; + struct bnx2x_raw_obj *r = &o->raw; + + /* Do nothing if only driver cleanup was requested */ + if (test_bit(RAMROD_DRV_CLR_ONLY, &p->ramrod_flags)) + return 0; + + r->set_pending(r); + + rc = o->config_rss(bp, p); + if (rc < 0) { + r->clear_pending(r); + return rc; + } + + if (test_bit(RAMROD_COMP_WAIT, &p->ramrod_flags)) + rc = r->wait_comp(bp, r); + + return rc; +} + + +void bnx2x_init_rss_config_obj(struct bnx2x *bp, + struct bnx2x_rss_config_obj *rss_obj, + u8 cl_id, u32 cid, u8 func_id, u8 engine_id, + void *rdata, dma_addr_t rdata_mapping, + int state, unsigned long *pstate, + bnx2x_obj_type type) +{ + bnx2x_init_raw_obj(&rss_obj->raw, cl_id, cid, func_id, rdata, + rdata_mapping, state, pstate, type); + + rss_obj->engine_id = engine_id; + rss_obj->config_rss = bnx2x_setup_rss; +} + +/********************** Queue state object ***********************************/ + +/** + * bnx2x_queue_state_change - perform Queue state change transition + * + * @bp: device handle + * @params: parameters to perform the transition + * + * returns 0 in case of successfully completed transition, negative error + * code in case of failure, positive (EBUSY) value if there is a completion + * to that is still pending (possible only if RAMROD_COMP_WAIT is + * not set in params->ramrod_flags for asynchronous commands). + * + */ +int bnx2x_queue_state_change(struct bnx2x *bp, + struct bnx2x_queue_state_params *params) +{ + struct bnx2x_queue_sp_obj *o = params->q_obj; + int rc, pending_bit; + unsigned long *pending = &o->pending; + + /* Check that the requested transition is legal */ + if (o->check_transition(bp, o, params)) + return -EINVAL; + + /* Set "pending" bit */ + pending_bit = o->set_pending(o, params); + + /* Don't send a command if only driver cleanup was requested */ + if (test_bit(RAMROD_DRV_CLR_ONLY, ¶ms->ramrod_flags)) + o->complete_cmd(bp, o, pending_bit); + else { + /* Send a ramrod */ + rc = o->send_cmd(bp, params); + if (rc) { + o->next_state = BNX2X_Q_STATE_MAX; + clear_bit(pending_bit, pending); + smp_mb__after_clear_bit(); + return rc; + } + + if (test_bit(RAMROD_COMP_WAIT, ¶ms->ramrod_flags)) { + rc = o->wait_comp(bp, o, pending_bit); + if (rc) + return rc; + + return 0; + } + } + + return !!test_bit(pending_bit, pending); +} + + +static int bnx2x_queue_set_pending(struct bnx2x_queue_sp_obj *obj, + struct bnx2x_queue_state_params *params) +{ + enum bnx2x_queue_cmd cmd = params->cmd, bit; + + /* ACTIVATE and DEACTIVATE commands are implemented on top of + * UPDATE command. + */ + if ((cmd == BNX2X_Q_CMD_ACTIVATE) || + (cmd == BNX2X_Q_CMD_DEACTIVATE)) + bit = BNX2X_Q_CMD_UPDATE; + else + bit = cmd; + + set_bit(bit, &obj->pending); + return bit; +} + +static int bnx2x_queue_wait_comp(struct bnx2x *bp, + struct bnx2x_queue_sp_obj *o, + enum bnx2x_queue_cmd cmd) +{ + return bnx2x_state_wait(bp, cmd, &o->pending); +} + +/** + * bnx2x_queue_comp_cmd - complete the state change command. + * + * @bp: device handle + * @o: + * @cmd: + * + * Checks that the arrived completion is expected. + */ +static int bnx2x_queue_comp_cmd(struct bnx2x *bp, + struct bnx2x_queue_sp_obj *o, + enum bnx2x_queue_cmd cmd) +{ + unsigned long cur_pending = o->pending; + + if (!test_and_clear_bit(cmd, &cur_pending)) { + BNX2X_ERR("Bad MC reply %d for queue %d in state %d " + "pending 0x%lx, next_state %d\n", cmd, + o->cids[BNX2X_PRIMARY_CID_INDEX], + o->state, cur_pending, o->next_state); + return -EINVAL; + } + + if (o->next_tx_only >= o->max_cos) + /* >= becuase tx only must always be smaller than cos since the + * primary connection suports COS 0 + */ + BNX2X_ERR("illegal value for next tx_only: %d. max cos was %d", + o->next_tx_only, o->max_cos); + + DP(BNX2X_MSG_SP, "Completing command %d for queue %d, " + "setting state to %d\n", cmd, + o->cids[BNX2X_PRIMARY_CID_INDEX], o->next_state); + + if (o->next_tx_only) /* print num tx-only if any exist */ + DP(BNX2X_MSG_SP, "primary cid %d: num tx-only cons %d", + o->cids[BNX2X_PRIMARY_CID_INDEX], o->next_tx_only); + + o->state = o->next_state; + o->num_tx_only = o->next_tx_only; + o->next_state = BNX2X_Q_STATE_MAX; + + /* It's important that o->state and o->next_state are + * updated before o->pending. + */ + wmb(); + + clear_bit(cmd, &o->pending); + smp_mb__after_clear_bit(); + + return 0; +} + +static void bnx2x_q_fill_setup_data_e2(struct bnx2x *bp, + struct bnx2x_queue_state_params *cmd_params, + struct client_init_ramrod_data *data) +{ + struct bnx2x_queue_setup_params *params = &cmd_params->params.setup; + + /* Rx data */ + + /* IPv6 TPA supported for E2 and above only */ + data->rx.tpa_en |= test_bit(BNX2X_Q_FLG_TPA_IPV6, ¶ms->flags) * + CLIENT_INIT_RX_DATA_TPA_EN_IPV6; +} + +static void bnx2x_q_fill_init_general_data(struct bnx2x *bp, + struct bnx2x_queue_sp_obj *o, + struct bnx2x_general_setup_params *params, + struct client_init_general_data *gen_data, + unsigned long *flags) +{ + gen_data->client_id = o->cl_id; + + if (test_bit(BNX2X_Q_FLG_STATS, flags)) { + gen_data->statistics_counter_id = + params->stat_id; + gen_data->statistics_en_flg = 1; + gen_data->statistics_zero_flg = + test_bit(BNX2X_Q_FLG_ZERO_STATS, flags); + } else + gen_data->statistics_counter_id = + DISABLE_STATISTIC_COUNTER_ID_VALUE; + + gen_data->is_fcoe_flg = test_bit(BNX2X_Q_FLG_FCOE, flags); + gen_data->activate_flg = test_bit(BNX2X_Q_FLG_ACTIVE, flags); + gen_data->sp_client_id = params->spcl_id; + gen_data->mtu = cpu_to_le16(params->mtu); + gen_data->func_id = o->func_id; + + + gen_data->cos = params->cos; + + gen_data->traffic_type = + test_bit(BNX2X_Q_FLG_FCOE, flags) ? + LLFC_TRAFFIC_TYPE_FCOE : LLFC_TRAFFIC_TYPE_NW; + + DP(BNX2X_MSG_SP, "flags: active %d, cos %d, stats en %d", + gen_data->activate_flg, gen_data->cos, gen_data->statistics_en_flg); +} + +static void bnx2x_q_fill_init_tx_data(struct bnx2x_queue_sp_obj *o, + struct bnx2x_txq_setup_params *params, + struct client_init_tx_data *tx_data, + unsigned long *flags) +{ + tx_data->enforce_security_flg = + test_bit(BNX2X_Q_FLG_TX_SEC, flags); + tx_data->default_vlan = + cpu_to_le16(params->default_vlan); + tx_data->default_vlan_flg = + test_bit(BNX2X_Q_FLG_DEF_VLAN, flags); + tx_data->tx_switching_flg = + test_bit(BNX2X_Q_FLG_TX_SWITCH, flags); + tx_data->anti_spoofing_flg = + test_bit(BNX2X_Q_FLG_ANTI_SPOOF, flags); + tx_data->tx_status_block_id = params->fw_sb_id; + tx_data->tx_sb_index_number = params->sb_cq_index; + tx_data->tss_leading_client_id = params->tss_leading_cl_id; + + tx_data->tx_bd_page_base.lo = + cpu_to_le32(U64_LO(params->dscr_map)); + tx_data->tx_bd_page_base.hi = + cpu_to_le32(U64_HI(params->dscr_map)); + + /* Don't configure any Tx switching mode during queue SETUP */ + tx_data->state = 0; +} + +static void bnx2x_q_fill_init_pause_data(struct bnx2x_queue_sp_obj *o, + struct rxq_pause_params *params, + struct client_init_rx_data *rx_data) +{ + /* flow control data */ + rx_data->cqe_pause_thr_low = cpu_to_le16(params->rcq_th_lo); + rx_data->cqe_pause_thr_high = cpu_to_le16(params->rcq_th_hi); + rx_data->bd_pause_thr_low = cpu_to_le16(params->bd_th_lo); + rx_data->bd_pause_thr_high = cpu_to_le16(params->bd_th_hi); + rx_data->sge_pause_thr_low = cpu_to_le16(params->sge_th_lo); + rx_data->sge_pause_thr_high = cpu_to_le16(params->sge_th_hi); + rx_data->rx_cos_mask = cpu_to_le16(params->pri_map); +} + +static void bnx2x_q_fill_init_rx_data(struct bnx2x_queue_sp_obj *o, + struct bnx2x_rxq_setup_params *params, + struct client_init_rx_data *rx_data, + unsigned long *flags) +{ + /* Rx data */ + rx_data->tpa_en = test_bit(BNX2X_Q_FLG_TPA, flags) * + CLIENT_INIT_RX_DATA_TPA_EN_IPV4; + rx_data->vmqueue_mode_en_flg = 0; + + rx_data->cache_line_alignment_log_size = + params->cache_line_log; + rx_data->enable_dynamic_hc = + test_bit(BNX2X_Q_FLG_DHC, flags); + rx_data->max_sges_for_packet = params->max_sges_pkt; + rx_data->client_qzone_id = params->cl_qzone_id; + rx_data->max_agg_size = cpu_to_le16(params->tpa_agg_sz); + + /* Always start in DROP_ALL mode */ + rx_data->state = cpu_to_le16(CLIENT_INIT_RX_DATA_UCAST_DROP_ALL | + CLIENT_INIT_RX_DATA_MCAST_DROP_ALL); + + /* We don't set drop flags */ + rx_data->drop_ip_cs_err_flg = 0; + rx_data->drop_tcp_cs_err_flg = 0; + rx_data->drop_ttl0_flg = 0; + rx_data->drop_udp_cs_err_flg = 0; + rx_data->inner_vlan_removal_enable_flg = + test_bit(BNX2X_Q_FLG_VLAN, flags); + rx_data->outer_vlan_removal_enable_flg = + test_bit(BNX2X_Q_FLG_OV, flags); + rx_data->status_block_id = params->fw_sb_id; + rx_data->rx_sb_index_number = params->sb_cq_index; + rx_data->max_tpa_queues = params->max_tpa_queues; + rx_data->max_bytes_on_bd = cpu_to_le16(params->buf_sz); + rx_data->sge_buff_size = cpu_to_le16(params->sge_buf_sz); + rx_data->bd_page_base.lo = + cpu_to_le32(U64_LO(params->dscr_map)); + rx_data->bd_page_base.hi = + cpu_to_le32(U64_HI(params->dscr_map)); + rx_data->sge_page_base.lo = + cpu_to_le32(U64_LO(params->sge_map)); + rx_data->sge_page_base.hi = + cpu_to_le32(U64_HI(params->sge_map)); + rx_data->cqe_page_base.lo = + cpu_to_le32(U64_LO(params->rcq_map)); + rx_data->cqe_page_base.hi = + cpu_to_le32(U64_HI(params->rcq_map)); + rx_data->is_leading_rss = test_bit(BNX2X_Q_FLG_LEADING_RSS, flags); + + if (test_bit(BNX2X_Q_FLG_MCAST, flags)) { + rx_data->approx_mcast_engine_id = o->func_id; + rx_data->is_approx_mcast = 1; + } + + rx_data->rss_engine_id = params->rss_engine_id; + + /* silent vlan removal */ + rx_data->silent_vlan_removal_flg = + test_bit(BNX2X_Q_FLG_SILENT_VLAN_REM, flags); + rx_data->silent_vlan_value = + cpu_to_le16(params->silent_removal_value); + rx_data->silent_vlan_mask = + cpu_to_le16(params->silent_removal_mask); + +} + +/* initialize the general, tx and rx parts of a queue object */ +static void bnx2x_q_fill_setup_data_cmn(struct bnx2x *bp, + struct bnx2x_queue_state_params *cmd_params, + struct client_init_ramrod_data *data) +{ + bnx2x_q_fill_init_general_data(bp, cmd_params->q_obj, + &cmd_params->params.setup.gen_params, + &data->general, + &cmd_params->params.setup.flags); + + bnx2x_q_fill_init_tx_data(cmd_params->q_obj, + &cmd_params->params.setup.txq_params, + &data->tx, + &cmd_params->params.setup.flags); + + bnx2x_q_fill_init_rx_data(cmd_params->q_obj, + &cmd_params->params.setup.rxq_params, + &data->rx, + &cmd_params->params.setup.flags); + + bnx2x_q_fill_init_pause_data(cmd_params->q_obj, + &cmd_params->params.setup.pause_params, + &data->rx); +} + +/* initialize the general and tx parts of a tx-only queue object */ +static void bnx2x_q_fill_setup_tx_only(struct bnx2x *bp, + struct bnx2x_queue_state_params *cmd_params, + struct tx_queue_init_ramrod_data *data) +{ + bnx2x_q_fill_init_general_data(bp, cmd_params->q_obj, + &cmd_params->params.tx_only.gen_params, + &data->general, + &cmd_params->params.tx_only.flags); + + bnx2x_q_fill_init_tx_data(cmd_params->q_obj, + &cmd_params->params.tx_only.txq_params, + &data->tx, + &cmd_params->params.tx_only.flags); + + DP(BNX2X_MSG_SP, "cid %d, tx bd page lo %x hi %x",cmd_params->q_obj->cids[0], + data->tx.tx_bd_page_base.lo, data->tx.tx_bd_page_base.hi); +} + +/** + * bnx2x_q_init - init HW/FW queue + * + * @bp: device handle + * @params: + * + * HW/FW initial Queue configuration: + * - HC: Rx and Tx + * - CDU context validation + * + */ +static inline int bnx2x_q_init(struct bnx2x *bp, + struct bnx2x_queue_state_params *params) +{ + struct bnx2x_queue_sp_obj *o = params->q_obj; + struct bnx2x_queue_init_params *init = ¶ms->params.init; + u16 hc_usec; + u8 cos; + + /* Tx HC configuration */ + if (test_bit(BNX2X_Q_TYPE_HAS_TX, &o->type) && + test_bit(BNX2X_Q_FLG_HC, &init->tx.flags)) { + hc_usec = init->tx.hc_rate ? 1000000 / init->tx.hc_rate : 0; + + bnx2x_update_coalesce_sb_index(bp, init->tx.fw_sb_id, + init->tx.sb_cq_index, + !test_bit(BNX2X_Q_FLG_HC_EN, &init->tx.flags), + hc_usec); + } + + /* Rx HC configuration */ + if (test_bit(BNX2X_Q_TYPE_HAS_RX, &o->type) && + test_bit(BNX2X_Q_FLG_HC, &init->rx.flags)) { + hc_usec = init->rx.hc_rate ? 1000000 / init->rx.hc_rate : 0; + + bnx2x_update_coalesce_sb_index(bp, init->rx.fw_sb_id, + init->rx.sb_cq_index, + !test_bit(BNX2X_Q_FLG_HC_EN, &init->rx.flags), + hc_usec); + } + + /* Set CDU context validation values */ + for (cos = 0; cos < o->max_cos; cos++) { + DP(BNX2X_MSG_SP, "setting context validation. cid %d, cos %d", + o->cids[cos], cos); + DP(BNX2X_MSG_SP, "context pointer %p", init->cxts[cos]); + bnx2x_set_ctx_validation(bp, init->cxts[cos], o->cids[cos]); + } + + /* As no ramrod is sent, complete the command immediately */ + o->complete_cmd(bp, o, BNX2X_Q_CMD_INIT); + + mmiowb(); + smp_mb(); + + return 0; +} + +static inline int bnx2x_q_send_setup_e1x(struct bnx2x *bp, + struct bnx2x_queue_state_params *params) +{ + struct bnx2x_queue_sp_obj *o = params->q_obj; + struct client_init_ramrod_data *rdata = + (struct client_init_ramrod_data *)o->rdata; + dma_addr_t data_mapping = o->rdata_mapping; + int ramrod = RAMROD_CMD_ID_ETH_CLIENT_SETUP; + + /* Clear the ramrod data */ + memset(rdata, 0, sizeof(*rdata)); + + /* Fill the ramrod data */ + bnx2x_q_fill_setup_data_cmn(bp, params, rdata); + + /* + * No need for an explicit memory barrier here as long we would + * need to ensure the ordering of writing to the SPQ element + * and updating of the SPQ producer which involves a memory + * read and we will have to put a full memory barrier there + * (inside bnx2x_sp_post()). + */ + + return bnx2x_sp_post(bp, ramrod, o->cids[BNX2X_PRIMARY_CID_INDEX], + U64_HI(data_mapping), + U64_LO(data_mapping), ETH_CONNECTION_TYPE); +} + +static inline int bnx2x_q_send_setup_e2(struct bnx2x *bp, + struct bnx2x_queue_state_params *params) +{ + struct bnx2x_queue_sp_obj *o = params->q_obj; + struct client_init_ramrod_data *rdata = + (struct client_init_ramrod_data *)o->rdata; + dma_addr_t data_mapping = o->rdata_mapping; + int ramrod = RAMROD_CMD_ID_ETH_CLIENT_SETUP; + + /* Clear the ramrod data */ + memset(rdata, 0, sizeof(*rdata)); + + /* Fill the ramrod data */ + bnx2x_q_fill_setup_data_cmn(bp, params, rdata); + bnx2x_q_fill_setup_data_e2(bp, params, rdata); + + /* + * No need for an explicit memory barrier here as long we would + * need to ensure the ordering of writing to the SPQ element + * and updating of the SPQ producer which involves a memory + * read and we will have to put a full memory barrier there + * (inside bnx2x_sp_post()). + */ + + return bnx2x_sp_post(bp, ramrod, o->cids[BNX2X_PRIMARY_CID_INDEX], + U64_HI(data_mapping), + U64_LO(data_mapping), ETH_CONNECTION_TYPE); +} + +static inline int bnx2x_q_send_setup_tx_only(struct bnx2x *bp, + struct bnx2x_queue_state_params *params) +{ + struct bnx2x_queue_sp_obj *o = params->q_obj; + struct tx_queue_init_ramrod_data *rdata = + (struct tx_queue_init_ramrod_data *)o->rdata; + dma_addr_t data_mapping = o->rdata_mapping; + int ramrod = RAMROD_CMD_ID_ETH_TX_QUEUE_SETUP; + struct bnx2x_queue_setup_tx_only_params *tx_only_params = + ¶ms->params.tx_only; + u8 cid_index = tx_only_params->cid_index; + + + if (cid_index >= o->max_cos) { + BNX2X_ERR("queue[%d]: cid_index (%d) is out of range\n", + o->cl_id, cid_index); + return -EINVAL; + } + + DP(BNX2X_MSG_SP, "parameters received: cos: %d sp-id: %d", + tx_only_params->gen_params.cos, + tx_only_params->gen_params.spcl_id); + + /* Clear the ramrod data */ + memset(rdata, 0, sizeof(*rdata)); + + /* Fill the ramrod data */ + bnx2x_q_fill_setup_tx_only(bp, params, rdata); + + DP(BNX2X_MSG_SP, "sending tx-only ramrod: cid %d, client-id %d," + "sp-client id %d, cos %d", + o->cids[cid_index], + rdata->general.client_id, + rdata->general.sp_client_id, rdata->general.cos); + + /* + * No need for an explicit memory barrier here as long we would + * need to ensure the ordering of writing to the SPQ element + * and updating of the SPQ producer which involves a memory + * read and we will have to put a full memory barrier there + * (inside bnx2x_sp_post()). + */ + + return bnx2x_sp_post(bp, ramrod, o->cids[cid_index], + U64_HI(data_mapping), + U64_LO(data_mapping), ETH_CONNECTION_TYPE); +} + +static void bnx2x_q_fill_update_data(struct bnx2x *bp, + struct bnx2x_queue_sp_obj *obj, + struct bnx2x_queue_update_params *params, + struct client_update_ramrod_data *data) +{ + /* Client ID of the client to update */ + data->client_id = obj->cl_id; + + /* Function ID of the client to update */ + data->func_id = obj->func_id; + + /* Default VLAN value */ + data->default_vlan = cpu_to_le16(params->def_vlan); + + /* Inner VLAN stripping */ + data->inner_vlan_removal_enable_flg = + test_bit(BNX2X_Q_UPDATE_IN_VLAN_REM, ¶ms->update_flags); + data->inner_vlan_removal_change_flg = + test_bit(BNX2X_Q_UPDATE_IN_VLAN_REM_CHNG, + ¶ms->update_flags); + + /* Outer VLAN sripping */ + data->outer_vlan_removal_enable_flg = + test_bit(BNX2X_Q_UPDATE_OUT_VLAN_REM, ¶ms->update_flags); + data->outer_vlan_removal_change_flg = + test_bit(BNX2X_Q_UPDATE_OUT_VLAN_REM_CHNG, + ¶ms->update_flags); + + /* Drop packets that have source MAC that doesn't belong to this + * Queue. + */ + data->anti_spoofing_enable_flg = + test_bit(BNX2X_Q_UPDATE_ANTI_SPOOF, ¶ms->update_flags); + data->anti_spoofing_change_flg = + test_bit(BNX2X_Q_UPDATE_ANTI_SPOOF_CHNG, ¶ms->update_flags); + + /* Activate/Deactivate */ + data->activate_flg = + test_bit(BNX2X_Q_UPDATE_ACTIVATE, ¶ms->update_flags); + data->activate_change_flg = + test_bit(BNX2X_Q_UPDATE_ACTIVATE_CHNG, ¶ms->update_flags); + + /* Enable default VLAN */ + data->default_vlan_enable_flg = + test_bit(BNX2X_Q_UPDATE_DEF_VLAN_EN, ¶ms->update_flags); + data->default_vlan_change_flg = + test_bit(BNX2X_Q_UPDATE_DEF_VLAN_EN_CHNG, + ¶ms->update_flags); + + /* silent vlan removal */ + data->silent_vlan_change_flg = + test_bit(BNX2X_Q_UPDATE_SILENT_VLAN_REM_CHNG, + ¶ms->update_flags); + data->silent_vlan_removal_flg = + test_bit(BNX2X_Q_UPDATE_SILENT_VLAN_REM, ¶ms->update_flags); + data->silent_vlan_value = cpu_to_le16(params->silent_removal_value); + data->silent_vlan_mask = cpu_to_le16(params->silent_removal_mask); +} + +static inline int bnx2x_q_send_update(struct bnx2x *bp, + struct bnx2x_queue_state_params *params) +{ + struct bnx2x_queue_sp_obj *o = params->q_obj; + struct client_update_ramrod_data *rdata = + (struct client_update_ramrod_data *)o->rdata; + dma_addr_t data_mapping = o->rdata_mapping; + struct bnx2x_queue_update_params *update_params = + ¶ms->params.update; + u8 cid_index = update_params->cid_index; + + if (cid_index >= o->max_cos) { + BNX2X_ERR("queue[%d]: cid_index (%d) is out of range\n", + o->cl_id, cid_index); + return -EINVAL; + } + + + /* Clear the ramrod data */ + memset(rdata, 0, sizeof(*rdata)); + + /* Fill the ramrod data */ + bnx2x_q_fill_update_data(bp, o, update_params, rdata); + + /* + * No need for an explicit memory barrier here as long we would + * need to ensure the ordering of writing to the SPQ element + * and updating of the SPQ producer which involves a memory + * read and we will have to put a full memory barrier there + * (inside bnx2x_sp_post()). + */ + + return bnx2x_sp_post(bp, RAMROD_CMD_ID_ETH_CLIENT_UPDATE, + o->cids[cid_index], U64_HI(data_mapping), + U64_LO(data_mapping), ETH_CONNECTION_TYPE); +} + +/** + * bnx2x_q_send_deactivate - send DEACTIVATE command + * + * @bp: device handle + * @params: + * + * implemented using the UPDATE command. + */ +static inline int bnx2x_q_send_deactivate(struct bnx2x *bp, + struct bnx2x_queue_state_params *params) +{ + struct bnx2x_queue_update_params *update = ¶ms->params.update; + + memset(update, 0, sizeof(*update)); + + __set_bit(BNX2X_Q_UPDATE_ACTIVATE_CHNG, &update->update_flags); + + return bnx2x_q_send_update(bp, params); +} + +/** + * bnx2x_q_send_activate - send ACTIVATE command + * + * @bp: device handle + * @params: + * + * implemented using the UPDATE command. + */ +static inline int bnx2x_q_send_activate(struct bnx2x *bp, + struct bnx2x_queue_state_params *params) +{ + struct bnx2x_queue_update_params *update = ¶ms->params.update; + + memset(update, 0, sizeof(*update)); + + __set_bit(BNX2X_Q_UPDATE_ACTIVATE, &update->update_flags); + __set_bit(BNX2X_Q_UPDATE_ACTIVATE_CHNG, &update->update_flags); + + return bnx2x_q_send_update(bp, params); +} + +static inline int bnx2x_q_send_update_tpa(struct bnx2x *bp, + struct bnx2x_queue_state_params *params) +{ + /* TODO: Not implemented yet. */ + return -1; +} + +static inline int bnx2x_q_send_halt(struct bnx2x *bp, + struct bnx2x_queue_state_params *params) +{ + struct bnx2x_queue_sp_obj *o = params->q_obj; + + return bnx2x_sp_post(bp, RAMROD_CMD_ID_ETH_HALT, + o->cids[BNX2X_PRIMARY_CID_INDEX], 0, o->cl_id, + ETH_CONNECTION_TYPE); +} + +static inline int bnx2x_q_send_cfc_del(struct bnx2x *bp, + struct bnx2x_queue_state_params *params) +{ + struct bnx2x_queue_sp_obj *o = params->q_obj; + u8 cid_idx = params->params.cfc_del.cid_index; + + if (cid_idx >= o->max_cos) { + BNX2X_ERR("queue[%d]: cid_index (%d) is out of range\n", + o->cl_id, cid_idx); + return -EINVAL; + } + + return bnx2x_sp_post(bp, RAMROD_CMD_ID_COMMON_CFC_DEL, + o->cids[cid_idx], 0, 0, NONE_CONNECTION_TYPE); +} + +static inline int bnx2x_q_send_terminate(struct bnx2x *bp, + struct bnx2x_queue_state_params *params) +{ + struct bnx2x_queue_sp_obj *o = params->q_obj; + u8 cid_index = params->params.terminate.cid_index; + + if (cid_index >= o->max_cos) { + BNX2X_ERR("queue[%d]: cid_index (%d) is out of range\n", + o->cl_id, cid_index); + return -EINVAL; + } + + return bnx2x_sp_post(bp, RAMROD_CMD_ID_ETH_TERMINATE, + o->cids[cid_index], 0, 0, ETH_CONNECTION_TYPE); +} + +static inline int bnx2x_q_send_empty(struct bnx2x *bp, + struct bnx2x_queue_state_params *params) +{ + struct bnx2x_queue_sp_obj *o = params->q_obj; + + return bnx2x_sp_post(bp, RAMROD_CMD_ID_ETH_EMPTY, + o->cids[BNX2X_PRIMARY_CID_INDEX], 0, 0, + ETH_CONNECTION_TYPE); +} + +static inline int bnx2x_queue_send_cmd_cmn(struct bnx2x *bp, + struct bnx2x_queue_state_params *params) +{ + switch (params->cmd) { + case BNX2X_Q_CMD_INIT: + return bnx2x_q_init(bp, params); + case BNX2X_Q_CMD_SETUP_TX_ONLY: + return bnx2x_q_send_setup_tx_only(bp, params); + case BNX2X_Q_CMD_DEACTIVATE: + return bnx2x_q_send_deactivate(bp, params); + case BNX2X_Q_CMD_ACTIVATE: + return bnx2x_q_send_activate(bp, params); + case BNX2X_Q_CMD_UPDATE: + return bnx2x_q_send_update(bp, params); + case BNX2X_Q_CMD_UPDATE_TPA: + return bnx2x_q_send_update_tpa(bp, params); + case BNX2X_Q_CMD_HALT: + return bnx2x_q_send_halt(bp, params); + case BNX2X_Q_CMD_CFC_DEL: + return bnx2x_q_send_cfc_del(bp, params); + case BNX2X_Q_CMD_TERMINATE: + return bnx2x_q_send_terminate(bp, params); + case BNX2X_Q_CMD_EMPTY: + return bnx2x_q_send_empty(bp, params); + default: + BNX2X_ERR("Unknown command: %d\n", params->cmd); + return -EINVAL; + } +} + +static int bnx2x_queue_send_cmd_e1x(struct bnx2x *bp, + struct bnx2x_queue_state_params *params) +{ + switch (params->cmd) { + case BNX2X_Q_CMD_SETUP: + return bnx2x_q_send_setup_e1x(bp, params); + case BNX2X_Q_CMD_INIT: + case BNX2X_Q_CMD_SETUP_TX_ONLY: + case BNX2X_Q_CMD_DEACTIVATE: + case BNX2X_Q_CMD_ACTIVATE: + case BNX2X_Q_CMD_UPDATE: + case BNX2X_Q_CMD_UPDATE_TPA: + case BNX2X_Q_CMD_HALT: + case BNX2X_Q_CMD_CFC_DEL: + case BNX2X_Q_CMD_TERMINATE: + case BNX2X_Q_CMD_EMPTY: + return bnx2x_queue_send_cmd_cmn(bp, params); + default: + BNX2X_ERR("Unknown command: %d\n", params->cmd); + return -EINVAL; + } +} + +static int bnx2x_queue_send_cmd_e2(struct bnx2x *bp, + struct bnx2x_queue_state_params *params) +{ + switch (params->cmd) { + case BNX2X_Q_CMD_SETUP: + return bnx2x_q_send_setup_e2(bp, params); + case BNX2X_Q_CMD_INIT: + case BNX2X_Q_CMD_SETUP_TX_ONLY: + case BNX2X_Q_CMD_DEACTIVATE: + case BNX2X_Q_CMD_ACTIVATE: + case BNX2X_Q_CMD_UPDATE: + case BNX2X_Q_CMD_UPDATE_TPA: + case BNX2X_Q_CMD_HALT: + case BNX2X_Q_CMD_CFC_DEL: + case BNX2X_Q_CMD_TERMINATE: + case BNX2X_Q_CMD_EMPTY: + return bnx2x_queue_send_cmd_cmn(bp, params); + default: + BNX2X_ERR("Unknown command: %d\n", params->cmd); + return -EINVAL; + } +} + +/** + * bnx2x_queue_chk_transition - check state machine of a regular Queue + * + * @bp: device handle + * @o: + * @params: + * + * (not Forwarding) + * It both checks if the requested command is legal in a current + * state and, if it's legal, sets a `next_state' in the object + * that will be used in the completion flow to set the `state' + * of the object. + * + * returns 0 if a requested command is a legal transition, + * -EINVAL otherwise. + */ +static int bnx2x_queue_chk_transition(struct bnx2x *bp, + struct bnx2x_queue_sp_obj *o, + struct bnx2x_queue_state_params *params) +{ + enum bnx2x_q_state state = o->state, next_state = BNX2X_Q_STATE_MAX; + enum bnx2x_queue_cmd cmd = params->cmd; + struct bnx2x_queue_update_params *update_params = + ¶ms->params.update; + u8 next_tx_only = o->num_tx_only; + + /* + * Forget all pending for completion commands if a driver only state + * transition has been requested. + */ + if (test_bit(RAMROD_DRV_CLR_ONLY, ¶ms->ramrod_flags)) { + o->pending = 0; + o->next_state = BNX2X_Q_STATE_MAX; + } + + /* + * Don't allow a next state transition if we are in the middle of + * the previous one. + */ + if (o->pending) + return -EBUSY; + + switch (state) { + case BNX2X_Q_STATE_RESET: + if (cmd == BNX2X_Q_CMD_INIT) + next_state = BNX2X_Q_STATE_INITIALIZED; + + break; + case BNX2X_Q_STATE_INITIALIZED: + if (cmd == BNX2X_Q_CMD_SETUP) { + if (test_bit(BNX2X_Q_FLG_ACTIVE, + ¶ms->params.setup.flags)) + next_state = BNX2X_Q_STATE_ACTIVE; + else + next_state = BNX2X_Q_STATE_INACTIVE; + } + + break; + case BNX2X_Q_STATE_ACTIVE: + if (cmd == BNX2X_Q_CMD_DEACTIVATE) + next_state = BNX2X_Q_STATE_INACTIVE; + + else if ((cmd == BNX2X_Q_CMD_EMPTY) || + (cmd == BNX2X_Q_CMD_UPDATE_TPA)) + next_state = BNX2X_Q_STATE_ACTIVE; + + else if (cmd == BNX2X_Q_CMD_SETUP_TX_ONLY) { + next_state = BNX2X_Q_STATE_MULTI_COS; + next_tx_only = 1; + } + + else if (cmd == BNX2X_Q_CMD_HALT) + next_state = BNX2X_Q_STATE_STOPPED; + + else if (cmd == BNX2X_Q_CMD_UPDATE) { + /* If "active" state change is requested, update the + * state accordingly. + */ + if (test_bit(BNX2X_Q_UPDATE_ACTIVATE_CHNG, + &update_params->update_flags) && + !test_bit(BNX2X_Q_UPDATE_ACTIVATE, + &update_params->update_flags)) + next_state = BNX2X_Q_STATE_INACTIVE; + else + next_state = BNX2X_Q_STATE_ACTIVE; + } + + break; + case BNX2X_Q_STATE_MULTI_COS: + if (cmd == BNX2X_Q_CMD_TERMINATE) + next_state = BNX2X_Q_STATE_MCOS_TERMINATED; + + else if (cmd == BNX2X_Q_CMD_SETUP_TX_ONLY) { + next_state = BNX2X_Q_STATE_MULTI_COS; + next_tx_only = o->num_tx_only + 1; + } + + else if ((cmd == BNX2X_Q_CMD_EMPTY) || + (cmd == BNX2X_Q_CMD_UPDATE_TPA)) + next_state = BNX2X_Q_STATE_MULTI_COS; + + else if (cmd == BNX2X_Q_CMD_UPDATE) { + /* If "active" state change is requested, update the + * state accordingly. + */ + if (test_bit(BNX2X_Q_UPDATE_ACTIVATE_CHNG, + &update_params->update_flags) && + !test_bit(BNX2X_Q_UPDATE_ACTIVATE, + &update_params->update_flags)) + next_state = BNX2X_Q_STATE_INACTIVE; + else + next_state = BNX2X_Q_STATE_MULTI_COS; + } + + break; + case BNX2X_Q_STATE_MCOS_TERMINATED: + if (cmd == BNX2X_Q_CMD_CFC_DEL) { + next_tx_only = o->num_tx_only - 1; + if (next_tx_only == 0) + next_state = BNX2X_Q_STATE_ACTIVE; + else + next_state = BNX2X_Q_STATE_MULTI_COS; + } + + break; + case BNX2X_Q_STATE_INACTIVE: + if (cmd == BNX2X_Q_CMD_ACTIVATE) + next_state = BNX2X_Q_STATE_ACTIVE; + + else if ((cmd == BNX2X_Q_CMD_EMPTY) || + (cmd == BNX2X_Q_CMD_UPDATE_TPA)) + next_state = BNX2X_Q_STATE_INACTIVE; + + else if (cmd == BNX2X_Q_CMD_HALT) + next_state = BNX2X_Q_STATE_STOPPED; + + else if (cmd == BNX2X_Q_CMD_UPDATE) { + /* If "active" state change is requested, update the + * state accordingly. + */ + if (test_bit(BNX2X_Q_UPDATE_ACTIVATE_CHNG, + &update_params->update_flags) && + test_bit(BNX2X_Q_UPDATE_ACTIVATE, + &update_params->update_flags)){ + if (o->num_tx_only == 0) + next_state = BNX2X_Q_STATE_ACTIVE; + else /* tx only queues exist for this queue */ + next_state = BNX2X_Q_STATE_MULTI_COS; + } else + next_state = BNX2X_Q_STATE_INACTIVE; + } + + break; + case BNX2X_Q_STATE_STOPPED: + if (cmd == BNX2X_Q_CMD_TERMINATE) + next_state = BNX2X_Q_STATE_TERMINATED; + + break; + case BNX2X_Q_STATE_TERMINATED: + if (cmd == BNX2X_Q_CMD_CFC_DEL) + next_state = BNX2X_Q_STATE_RESET; + + break; + default: + BNX2X_ERR("Illegal state: %d\n", state); + } + + /* Transition is assured */ + if (next_state != BNX2X_Q_STATE_MAX) { + DP(BNX2X_MSG_SP, "Good state transition: %d(%d)->%d\n", + state, cmd, next_state); + o->next_state = next_state; + o->next_tx_only = next_tx_only; + return 0; + } + + DP(BNX2X_MSG_SP, "Bad state transition request: %d %d\n", state, cmd); + + return -EINVAL; +} + +void bnx2x_init_queue_obj(struct bnx2x *bp, + struct bnx2x_queue_sp_obj *obj, + u8 cl_id, u32 *cids, u8 cid_cnt, u8 func_id, + void *rdata, + dma_addr_t rdata_mapping, unsigned long type) +{ + memset(obj, 0, sizeof(*obj)); + + /* We support only BNX2X_MULTI_TX_COS Tx CoS at the moment */ + BUG_ON(BNX2X_MULTI_TX_COS < cid_cnt); + + memcpy(obj->cids, cids, sizeof(obj->cids[0]) * cid_cnt); + obj->max_cos = cid_cnt; + obj->cl_id = cl_id; + obj->func_id = func_id; + obj->rdata = rdata; + obj->rdata_mapping = rdata_mapping; + obj->type = type; + obj->next_state = BNX2X_Q_STATE_MAX; + + if (CHIP_IS_E1x(bp)) + obj->send_cmd = bnx2x_queue_send_cmd_e1x; + else + obj->send_cmd = bnx2x_queue_send_cmd_e2; + + obj->check_transition = bnx2x_queue_chk_transition; + + obj->complete_cmd = bnx2x_queue_comp_cmd; + obj->wait_comp = bnx2x_queue_wait_comp; + obj->set_pending = bnx2x_queue_set_pending; +} + +void bnx2x_queue_set_cos_cid(struct bnx2x *bp, + struct bnx2x_queue_sp_obj *obj, + u32 cid, u8 index) +{ + obj->cids[index] = cid; +} + +/********************** Function state object *********************************/ +enum bnx2x_func_state bnx2x_func_get_state(struct bnx2x *bp, + struct bnx2x_func_sp_obj *o) +{ + /* in the middle of transaction - return INVALID state */ + if (o->pending) + return BNX2X_F_STATE_MAX; + + /* + * unsure the order of reading of o->pending and o->state + * o->pending should be read first + */ + rmb(); + + return o->state; +} + +static int bnx2x_func_wait_comp(struct bnx2x *bp, + struct bnx2x_func_sp_obj *o, + enum bnx2x_func_cmd cmd) +{ + return bnx2x_state_wait(bp, cmd, &o->pending); +} + +/** + * bnx2x_func_state_change_comp - complete the state machine transition + * + * @bp: device handle + * @o: + * @cmd: + * + * Called on state change transition. Completes the state + * machine transition only - no HW interaction. + */ +static inline int bnx2x_func_state_change_comp(struct bnx2x *bp, + struct bnx2x_func_sp_obj *o, + enum bnx2x_func_cmd cmd) +{ + unsigned long cur_pending = o->pending; + + if (!test_and_clear_bit(cmd, &cur_pending)) { + BNX2X_ERR("Bad MC reply %d for func %d in state %d " + "pending 0x%lx, next_state %d\n", cmd, BP_FUNC(bp), + o->state, cur_pending, o->next_state); + return -EINVAL; + } + + DP(BNX2X_MSG_SP, "Completing command %d for func %d, setting state to " + "%d\n", cmd, BP_FUNC(bp), o->next_state); + + o->state = o->next_state; + o->next_state = BNX2X_F_STATE_MAX; + + /* It's important that o->state and o->next_state are + * updated before o->pending. + */ + wmb(); + + clear_bit(cmd, &o->pending); + smp_mb__after_clear_bit(); + + return 0; +} + +/** + * bnx2x_func_comp_cmd - complete the state change command + * + * @bp: device handle + * @o: + * @cmd: + * + * Checks that the arrived completion is expected. + */ +static int bnx2x_func_comp_cmd(struct bnx2x *bp, + struct bnx2x_func_sp_obj *o, + enum bnx2x_func_cmd cmd) +{ + /* Complete the state machine part first, check if it's a + * legal completion. + */ + int rc = bnx2x_func_state_change_comp(bp, o, cmd); + return rc; +} + +/** + * bnx2x_func_chk_transition - perform function state machine transition + * + * @bp: device handle + * @o: + * @params: + * + * It both checks if the requested command is legal in a current + * state and, if it's legal, sets a `next_state' in the object + * that will be used in the completion flow to set the `state' + * of the object. + * + * returns 0 if a requested command is a legal transition, + * -EINVAL otherwise. + */ +static int bnx2x_func_chk_transition(struct bnx2x *bp, + struct bnx2x_func_sp_obj *o, + struct bnx2x_func_state_params *params) +{ + enum bnx2x_func_state state = o->state, next_state = BNX2X_F_STATE_MAX; + enum bnx2x_func_cmd cmd = params->cmd; + + /* + * Forget all pending for completion commands if a driver only state + * transition has been requested. + */ + if (test_bit(RAMROD_DRV_CLR_ONLY, ¶ms->ramrod_flags)) { + o->pending = 0; + o->next_state = BNX2X_F_STATE_MAX; + } + + /* + * Don't allow a next state transition if we are in the middle of + * the previous one. + */ + if (o->pending) + return -EBUSY; + + switch (state) { + case BNX2X_F_STATE_RESET: + if (cmd == BNX2X_F_CMD_HW_INIT) + next_state = BNX2X_F_STATE_INITIALIZED; + + break; + case BNX2X_F_STATE_INITIALIZED: + if (cmd == BNX2X_F_CMD_START) + next_state = BNX2X_F_STATE_STARTED; + + else if (cmd == BNX2X_F_CMD_HW_RESET) + next_state = BNX2X_F_STATE_RESET; + + break; + case BNX2X_F_STATE_STARTED: + if (cmd == BNX2X_F_CMD_STOP) + next_state = BNX2X_F_STATE_INITIALIZED; + else if (cmd == BNX2X_F_CMD_TX_STOP) + next_state = BNX2X_F_STATE_TX_STOPPED; + + break; + case BNX2X_F_STATE_TX_STOPPED: + if (cmd == BNX2X_F_CMD_TX_START) + next_state = BNX2X_F_STATE_STARTED; + + break; + default: + BNX2X_ERR("Unknown state: %d\n", state); + } + + /* Transition is assured */ + if (next_state != BNX2X_F_STATE_MAX) { + DP(BNX2X_MSG_SP, "Good function state transition: %d(%d)->%d\n", + state, cmd, next_state); + o->next_state = next_state; + return 0; + } + + DP(BNX2X_MSG_SP, "Bad function state transition request: %d %d\n", + state, cmd); + + return -EINVAL; +} + +/** + * bnx2x_func_init_func - performs HW init at function stage + * + * @bp: device handle + * @drv: + * + * Init HW when the current phase is + * FW_MSG_CODE_DRV_LOAD_FUNCTION: initialize only FUNCTION-only + * HW blocks. + */ +static inline int bnx2x_func_init_func(struct bnx2x *bp, + const struct bnx2x_func_sp_drv_ops *drv) +{ + return drv->init_hw_func(bp); +} + +/** + * bnx2x_func_init_port - performs HW init at port stage + * + * @bp: device handle + * @drv: + * + * Init HW when the current phase is + * FW_MSG_CODE_DRV_LOAD_PORT: initialize PORT-only and + * FUNCTION-only HW blocks. + * + */ +static inline int bnx2x_func_init_port(struct bnx2x *bp, + const struct bnx2x_func_sp_drv_ops *drv) +{ + int rc = drv->init_hw_port(bp); + if (rc) + return rc; + + return bnx2x_func_init_func(bp, drv); +} + +/** + * bnx2x_func_init_cmn_chip - performs HW init at chip-common stage + * + * @bp: device handle + * @drv: + * + * Init HW when the current phase is + * FW_MSG_CODE_DRV_LOAD_COMMON_CHIP: initialize COMMON_CHIP, + * PORT-only and FUNCTION-only HW blocks. + */ +static inline int bnx2x_func_init_cmn_chip(struct bnx2x *bp, + const struct bnx2x_func_sp_drv_ops *drv) +{ + int rc = drv->init_hw_cmn_chip(bp); + if (rc) + return rc; + + return bnx2x_func_init_port(bp, drv); +} + +/** + * bnx2x_func_init_cmn - performs HW init at common stage + * + * @bp: device handle + * @drv: + * + * Init HW when the current phase is + * FW_MSG_CODE_DRV_LOAD_COMMON_CHIP: initialize COMMON, + * PORT-only and FUNCTION-only HW blocks. + */ +static inline int bnx2x_func_init_cmn(struct bnx2x *bp, + const struct bnx2x_func_sp_drv_ops *drv) +{ + int rc = drv->init_hw_cmn(bp); + if (rc) + return rc; + + return bnx2x_func_init_port(bp, drv); +} + +static int bnx2x_func_hw_init(struct bnx2x *bp, + struct bnx2x_func_state_params *params) +{ + u32 load_code = params->params.hw_init.load_phase; + struct bnx2x_func_sp_obj *o = params->f_obj; + const struct bnx2x_func_sp_drv_ops *drv = o->drv; + int rc = 0; + + DP(BNX2X_MSG_SP, "function %d load_code %x\n", + BP_ABS_FUNC(bp), load_code); + + /* Prepare buffers for unzipping the FW */ + rc = drv->gunzip_init(bp); + if (rc) + return rc; + + /* Prepare FW */ + rc = drv->init_fw(bp); + if (rc) { + BNX2X_ERR("Error loading firmware\n"); + goto fw_init_err; + } + + /* Handle the beginning of COMMON_XXX pases separatelly... */ + switch (load_code) { + case FW_MSG_CODE_DRV_LOAD_COMMON_CHIP: + rc = bnx2x_func_init_cmn_chip(bp, drv); + if (rc) + goto init_hw_err; + + break; + case FW_MSG_CODE_DRV_LOAD_COMMON: + rc = bnx2x_func_init_cmn(bp, drv); + if (rc) + goto init_hw_err; + + break; + case FW_MSG_CODE_DRV_LOAD_PORT: + rc = bnx2x_func_init_port(bp, drv); + if (rc) + goto init_hw_err; + + break; + case FW_MSG_CODE_DRV_LOAD_FUNCTION: + rc = bnx2x_func_init_func(bp, drv); + if (rc) + goto init_hw_err; + + break; + default: + BNX2X_ERR("Unknown load_code (0x%x) from MCP\n", load_code); + rc = -EINVAL; + } + +init_hw_err: + drv->release_fw(bp); + +fw_init_err: + drv->gunzip_end(bp); + + /* In case of success, complete the comand immediatelly: no ramrods + * have been sent. + */ + if (!rc) + o->complete_cmd(bp, o, BNX2X_F_CMD_HW_INIT); + + return rc; +} + +/** + * bnx2x_func_reset_func - reset HW at function stage + * + * @bp: device handle + * @drv: + * + * Reset HW at FW_MSG_CODE_DRV_UNLOAD_FUNCTION stage: reset only + * FUNCTION-only HW blocks. + */ +static inline void bnx2x_func_reset_func(struct bnx2x *bp, + const struct bnx2x_func_sp_drv_ops *drv) +{ + drv->reset_hw_func(bp); +} + +/** + * bnx2x_func_reset_port - reser HW at port stage + * + * @bp: device handle + * @drv: + * + * Reset HW at FW_MSG_CODE_DRV_UNLOAD_PORT stage: reset + * FUNCTION-only and PORT-only HW blocks. + * + * !!!IMPORTANT!!! + * + * It's important to call reset_port before reset_func() as the last thing + * reset_func does is pf_disable() thus disabling PGLUE_B, which + * makes impossible any DMAE transactions. + */ +static inline void bnx2x_func_reset_port(struct bnx2x *bp, + const struct bnx2x_func_sp_drv_ops *drv) +{ + drv->reset_hw_port(bp); + bnx2x_func_reset_func(bp, drv); +} + +/** + * bnx2x_func_reset_cmn - reser HW at common stage + * + * @bp: device handle + * @drv: + * + * Reset HW at FW_MSG_CODE_DRV_UNLOAD_COMMON and + * FW_MSG_CODE_DRV_UNLOAD_COMMON_CHIP stages: reset COMMON, + * COMMON_CHIP, FUNCTION-only and PORT-only HW blocks. + */ +static inline void bnx2x_func_reset_cmn(struct bnx2x *bp, + const struct bnx2x_func_sp_drv_ops *drv) +{ + bnx2x_func_reset_port(bp, drv); + drv->reset_hw_cmn(bp); +} + + +static inline int bnx2x_func_hw_reset(struct bnx2x *bp, + struct bnx2x_func_state_params *params) +{ + u32 reset_phase = params->params.hw_reset.reset_phase; + struct bnx2x_func_sp_obj *o = params->f_obj; + const struct bnx2x_func_sp_drv_ops *drv = o->drv; + + DP(BNX2X_MSG_SP, "function %d reset_phase %x\n", BP_ABS_FUNC(bp), + reset_phase); + + switch (reset_phase) { + case FW_MSG_CODE_DRV_UNLOAD_COMMON: + bnx2x_func_reset_cmn(bp, drv); + break; + case FW_MSG_CODE_DRV_UNLOAD_PORT: + bnx2x_func_reset_port(bp, drv); + break; + case FW_MSG_CODE_DRV_UNLOAD_FUNCTION: + bnx2x_func_reset_func(bp, drv); + break; + default: + BNX2X_ERR("Unknown reset_phase (0x%x) from MCP\n", + reset_phase); + break; + } + + /* Complete the comand immediatelly: no ramrods have been sent. */ + o->complete_cmd(bp, o, BNX2X_F_CMD_HW_RESET); + + return 0; +} + +static inline int bnx2x_func_send_start(struct bnx2x *bp, + struct bnx2x_func_state_params *params) +{ + struct bnx2x_func_sp_obj *o = params->f_obj; + struct function_start_data *rdata = + (struct function_start_data *)o->rdata; + dma_addr_t data_mapping = o->rdata_mapping; + struct bnx2x_func_start_params *start_params = ¶ms->params.start; + + memset(rdata, 0, sizeof(*rdata)); + + /* Fill the ramrod data with provided parameters */ + rdata->function_mode = cpu_to_le16(start_params->mf_mode); + rdata->sd_vlan_tag = start_params->sd_vlan_tag; + rdata->path_id = BP_PATH(bp); + rdata->network_cos_mode = start_params->network_cos_mode; + + /* + * No need for an explicit memory barrier here as long we would + * need to ensure the ordering of writing to the SPQ element + * and updating of the SPQ producer which involves a memory + * read and we will have to put a full memory barrier there + * (inside bnx2x_sp_post()). + */ + + return bnx2x_sp_post(bp, RAMROD_CMD_ID_COMMON_FUNCTION_START, 0, + U64_HI(data_mapping), + U64_LO(data_mapping), NONE_CONNECTION_TYPE); +} + +static inline int bnx2x_func_send_stop(struct bnx2x *bp, + struct bnx2x_func_state_params *params) +{ + return bnx2x_sp_post(bp, RAMROD_CMD_ID_COMMON_FUNCTION_STOP, 0, 0, 0, + NONE_CONNECTION_TYPE); +} + +static inline int bnx2x_func_send_tx_stop(struct bnx2x *bp, + struct bnx2x_func_state_params *params) +{ + return bnx2x_sp_post(bp, RAMROD_CMD_ID_COMMON_STOP_TRAFFIC, 0, 0, 0, + NONE_CONNECTION_TYPE); +} +static inline int bnx2x_func_send_tx_start(struct bnx2x *bp, + struct bnx2x_func_state_params *params) +{ + struct bnx2x_func_sp_obj *o = params->f_obj; + struct flow_control_configuration *rdata = + (struct flow_control_configuration *)o->rdata; + dma_addr_t data_mapping = o->rdata_mapping; + struct bnx2x_func_tx_start_params *tx_start_params = + ¶ms->params.tx_start; + int i; + + memset(rdata, 0, sizeof(*rdata)); + + rdata->dcb_enabled = tx_start_params->dcb_enabled; + rdata->dcb_version = tx_start_params->dcb_version; + rdata->dont_add_pri_0_en = tx_start_params->dont_add_pri_0_en; + + for (i = 0; i < ARRAY_SIZE(rdata->traffic_type_to_priority_cos); i++) + rdata->traffic_type_to_priority_cos[i] = + tx_start_params->traffic_type_to_priority_cos[i]; + + return bnx2x_sp_post(bp, RAMROD_CMD_ID_COMMON_START_TRAFFIC, 0, + U64_HI(data_mapping), + U64_LO(data_mapping), NONE_CONNECTION_TYPE); +} + +static int bnx2x_func_send_cmd(struct bnx2x *bp, + struct bnx2x_func_state_params *params) +{ + switch (params->cmd) { + case BNX2X_F_CMD_HW_INIT: + return bnx2x_func_hw_init(bp, params); + case BNX2X_F_CMD_START: + return bnx2x_func_send_start(bp, params); + case BNX2X_F_CMD_STOP: + return bnx2x_func_send_stop(bp, params); + case BNX2X_F_CMD_HW_RESET: + return bnx2x_func_hw_reset(bp, params); + case BNX2X_F_CMD_TX_STOP: + return bnx2x_func_send_tx_stop(bp, params); + case BNX2X_F_CMD_TX_START: + return bnx2x_func_send_tx_start(bp, params); + default: + BNX2X_ERR("Unknown command: %d\n", params->cmd); + return -EINVAL; + } +} + +void bnx2x_init_func_obj(struct bnx2x *bp, + struct bnx2x_func_sp_obj *obj, + void *rdata, dma_addr_t rdata_mapping, + struct bnx2x_func_sp_drv_ops *drv_iface) +{ + memset(obj, 0, sizeof(*obj)); + + mutex_init(&obj->one_pending_mutex); + + obj->rdata = rdata; + obj->rdata_mapping = rdata_mapping; + + obj->send_cmd = bnx2x_func_send_cmd; + obj->check_transition = bnx2x_func_chk_transition; + obj->complete_cmd = bnx2x_func_comp_cmd; + obj->wait_comp = bnx2x_func_wait_comp; + + obj->drv = drv_iface; +} + +/** + * bnx2x_func_state_change - perform Function state change transition + * + * @bp: device handle + * @params: parameters to perform the transaction + * + * returns 0 in case of successfully completed transition, + * negative error code in case of failure, positive + * (EBUSY) value if there is a completion to that is + * still pending (possible only if RAMROD_COMP_WAIT is + * not set in params->ramrod_flags for asynchronous + * commands). + */ +int bnx2x_func_state_change(struct bnx2x *bp, + struct bnx2x_func_state_params *params) +{ + struct bnx2x_func_sp_obj *o = params->f_obj; + int rc; + enum bnx2x_func_cmd cmd = params->cmd; + unsigned long *pending = &o->pending; + + mutex_lock(&o->one_pending_mutex); + + /* Check that the requested transition is legal */ + if (o->check_transition(bp, o, params)) { + mutex_unlock(&o->one_pending_mutex); + return -EINVAL; + } + + /* Set "pending" bit */ + set_bit(cmd, pending); + + /* Don't send a command if only driver cleanup was requested */ + if (test_bit(RAMROD_DRV_CLR_ONLY, ¶ms->ramrod_flags)) { + bnx2x_func_state_change_comp(bp, o, cmd); + mutex_unlock(&o->one_pending_mutex); + } else { + /* Send a ramrod */ + rc = o->send_cmd(bp, params); + + mutex_unlock(&o->one_pending_mutex); + + if (rc) { + o->next_state = BNX2X_F_STATE_MAX; + clear_bit(cmd, pending); + smp_mb__after_clear_bit(); + return rc; + } + + if (test_bit(RAMROD_COMP_WAIT, ¶ms->ramrod_flags)) { + rc = o->wait_comp(bp, o, cmd); + if (rc) + return rc; + + return 0; + } + } + + return !!test_bit(cmd, pending); +} |