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gfiber / kernel / quantenna / 6bd80f372371a7b3f5ff13e4e8a560066299c001 / . / drivers / net / ethernet / broadcom / bnx2x / bnx2x_sriov.c
blob: 632daff117d305a822f95cc1bcd84b47437b2334 [file] [log] [blame]
/* bnx2x_sriov.c: QLogic Everest network driver.
*
* Copyright 2009-2013 Broadcom Corporation
* Copyright 2014 QLogic Corporation
* All rights reserved
*
* Unless you and QLogic 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 QLogic software provided under a
* license other than the GPL, without QLogic's express prior written
* consent.
*
* Maintained by: Ariel Elior <ariel.elior@qlogic.com>
* Written by: Shmulik Ravid
* Ariel Elior <ariel.elior@qlogic.com>
*
*/
#include "bnx2x.h"
#include "bnx2x_init.h"
#include "bnx2x_cmn.h"
#include "bnx2x_sp.h"
#include <linux/crc32.h>
#include <linux/if_vlan.h>
static int bnx2x_vf_op_prep(struct bnx2x *bp, int vfidx,
struct bnx2x_virtf **vf,
struct pf_vf_bulletin_content **bulletin,
bool test_queue);
/* General service functions */
static void storm_memset_vf_to_pf(struct bnx2x *bp, u16 abs_fid,
u16 pf_id)
{
REG_WR8(bp, BAR_XSTRORM_INTMEM + XSTORM_VF_TO_PF_OFFSET(abs_fid),
pf_id);
REG_WR8(bp, BAR_CSTRORM_INTMEM + CSTORM_VF_TO_PF_OFFSET(abs_fid),
pf_id);
REG_WR8(bp, BAR_TSTRORM_INTMEM + TSTORM_VF_TO_PF_OFFSET(abs_fid),
pf_id);
REG_WR8(bp, BAR_USTRORM_INTMEM + USTORM_VF_TO_PF_OFFSET(abs_fid),
pf_id);
}
static void storm_memset_func_en(struct bnx2x *bp, u16 abs_fid,
u8 enable)
{
REG_WR8(bp, BAR_XSTRORM_INTMEM + XSTORM_FUNC_EN_OFFSET(abs_fid),
enable);
REG_WR8(bp, BAR_CSTRORM_INTMEM + CSTORM_FUNC_EN_OFFSET(abs_fid),
enable);
REG_WR8(bp, BAR_TSTRORM_INTMEM + TSTORM_FUNC_EN_OFFSET(abs_fid),
enable);
REG_WR8(bp, BAR_USTRORM_INTMEM + USTORM_FUNC_EN_OFFSET(abs_fid),
enable);
}
int bnx2x_vf_idx_by_abs_fid(struct bnx2x *bp, u16 abs_vfid)
{
int idx;
for_each_vf(bp, idx)
if (bnx2x_vf(bp, idx, abs_vfid) == abs_vfid)
break;
return idx;
}
static
struct bnx2x_virtf *bnx2x_vf_by_abs_fid(struct bnx2x *bp, u16 abs_vfid)
{
u16 idx = (u16)bnx2x_vf_idx_by_abs_fid(bp, abs_vfid);
return (idx < BNX2X_NR_VIRTFN(bp)) ? BP_VF(bp, idx) : NULL;
}
static void bnx2x_vf_igu_ack_sb(struct bnx2x *bp, struct bnx2x_virtf *vf,
u8 igu_sb_id, u8 segment, u16 index, u8 op,
u8 update)
{
/* acking a VF sb through the PF - use the GRC */
u32 ctl;
u32 igu_addr_data = IGU_REG_COMMAND_REG_32LSB_DATA;
u32 igu_addr_ctl = IGU_REG_COMMAND_REG_CTRL;
u32 func_encode = vf->abs_vfid;
u32 addr_encode = IGU_CMD_E2_PROD_UPD_BASE + igu_sb_id;
struct igu_regular cmd_data = {0};
cmd_data.sb_id_and_flags =
((index << IGU_REGULAR_SB_INDEX_SHIFT) |
(segment << IGU_REGULAR_SEGMENT_ACCESS_SHIFT) |
(update << IGU_REGULAR_BUPDATE_SHIFT) |
(op << IGU_REGULAR_ENABLE_INT_SHIFT));
ctl = addr_encode << IGU_CTRL_REG_ADDRESS_SHIFT |
func_encode << IGU_CTRL_REG_FID_SHIFT |
IGU_CTRL_CMD_TYPE_WR << IGU_CTRL_REG_TYPE_SHIFT;
DP(NETIF_MSG_HW, "write 0x%08x to IGU(via GRC) addr 0x%x\n",
cmd_data.sb_id_and_flags, igu_addr_data);
REG_WR(bp, igu_addr_data, cmd_data.sb_id_and_flags);
mmiowb();
barrier();
DP(NETIF_MSG_HW, "write 0x%08x to IGU(via GRC) addr 0x%x\n",
ctl, igu_addr_ctl);
REG_WR(bp, igu_addr_ctl, ctl);
mmiowb();
barrier();
}
static bool bnx2x_validate_vf_sp_objs(struct bnx2x *bp,
struct bnx2x_virtf *vf,
bool print_err)
{
if (!bnx2x_leading_vfq(vf, sp_initialized)) {
if (print_err)
BNX2X_ERR("Slowpath objects not yet initialized!\n");
else
DP(BNX2X_MSG_IOV, "Slowpath objects not yet initialized!\n");
return false;
}
return true;
}
/* VFOP operations states */
void bnx2x_vfop_qctor_dump_tx(struct bnx2x *bp, struct bnx2x_virtf *vf,
struct bnx2x_queue_init_params *init_params,
struct bnx2x_queue_setup_params *setup_params,
u16 q_idx, u16 sb_idx)
{
DP(BNX2X_MSG_IOV,
"VF[%d] Q_SETUP: txq[%d]-- vfsb=%d, sb-index=%d, hc-rate=%d, flags=0x%lx, traffic-type=%d",
vf->abs_vfid,
q_idx,
sb_idx,
init_params->tx.sb_cq_index,
init_params->tx.hc_rate,
setup_params->flags,
setup_params->txq_params.traffic_type);
}
void bnx2x_vfop_qctor_dump_rx(struct bnx2x *bp, struct bnx2x_virtf *vf,
struct bnx2x_queue_init_params *init_params,
struct bnx2x_queue_setup_params *setup_params,
u16 q_idx, u16 sb_idx)
{
struct bnx2x_rxq_setup_params *rxq_params = &setup_params->rxq_params;
DP(BNX2X_MSG_IOV, "VF[%d] Q_SETUP: rxq[%d]-- vfsb=%d, sb-index=%d, hc-rate=%d, mtu=%d, buf-size=%d\n"
"sge-size=%d, max_sge_pkt=%d, tpa-agg-size=%d, flags=0x%lx, drop-flags=0x%x, cache-log=%d\n",
vf->abs_vfid,
q_idx,
sb_idx,
init_params->rx.sb_cq_index,
init_params->rx.hc_rate,
setup_params->gen_params.mtu,
rxq_params->buf_sz,
rxq_params->sge_buf_sz,
rxq_params->max_sges_pkt,
rxq_params->tpa_agg_sz,
setup_params->flags,
rxq_params->drop_flags,
rxq_params->cache_line_log);
}
void bnx2x_vfop_qctor_prep(struct bnx2x *bp,
struct bnx2x_virtf *vf,
struct bnx2x_vf_queue *q,
struct bnx2x_vf_queue_construct_params *p,
unsigned long q_type)
{
struct bnx2x_queue_init_params *init_p = &p->qstate.params.init;
struct bnx2x_queue_setup_params *setup_p = &p->prep_qsetup;
/* INIT */
/* Enable host coalescing in the transition to INIT state */
if (test_bit(BNX2X_Q_FLG_HC, &init_p->rx.flags))
__set_bit(BNX2X_Q_FLG_HC_EN, &init_p->rx.flags);
if (test_bit(BNX2X_Q_FLG_HC, &init_p->tx.flags))
__set_bit(BNX2X_Q_FLG_HC_EN, &init_p->tx.flags);
/* FW SB ID */
init_p->rx.fw_sb_id = vf_igu_sb(vf, q->sb_idx);
init_p->tx.fw_sb_id = vf_igu_sb(vf, q->sb_idx);
/* context */
init_p->cxts[0] = q->cxt;
/* SETUP */
/* Setup-op general parameters */
setup_p->gen_params.spcl_id = vf->sp_cl_id;
setup_p->gen_params.stat_id = vfq_stat_id(vf, q);
setup_p->gen_params.fp_hsi = vf->fp_hsi;
/* Setup-op flags:
* collect statistics, zero statistics, local-switching, security,
* OV for Flex10, RSS and MCAST for leading
*/
if (test_bit(BNX2X_Q_FLG_STATS, &setup_p->flags))
__set_bit(BNX2X_Q_FLG_ZERO_STATS, &setup_p->flags);
/* for VFs, enable tx switching, bd coherency, and mac address
* anti-spoofing
*/
__set_bit(BNX2X_Q_FLG_TX_SWITCH, &setup_p->flags);
__set_bit(BNX2X_Q_FLG_TX_SEC, &setup_p->flags);
__set_bit(BNX2X_Q_FLG_ANTI_SPOOF, &setup_p->flags);
/* Setup-op rx parameters */
if (test_bit(BNX2X_Q_TYPE_HAS_RX, &q_type)) {
struct bnx2x_rxq_setup_params *rxq_p = &setup_p->rxq_params;
rxq_p->cl_qzone_id = vfq_qzone_id(vf, q);
rxq_p->fw_sb_id = vf_igu_sb(vf, q->sb_idx);
rxq_p->rss_engine_id = FW_VF_HANDLE(vf->abs_vfid);
if (test_bit(BNX2X_Q_FLG_TPA, &setup_p->flags))
rxq_p->max_tpa_queues = BNX2X_VF_MAX_TPA_AGG_QUEUES;
}
/* Setup-op tx parameters */
if (test_bit(BNX2X_Q_TYPE_HAS_TX, &q_type)) {
setup_p->txq_params.tss_leading_cl_id = vf->leading_rss;
setup_p->txq_params.fw_sb_id = vf_igu_sb(vf, q->sb_idx);
}
}
static int bnx2x_vf_queue_create(struct bnx2x *bp,
struct bnx2x_virtf *vf, int qid,
struct bnx2x_vf_queue_construct_params *qctor)
{
struct bnx2x_queue_state_params *q_params;
int rc = 0;
DP(BNX2X_MSG_IOV, "vf[%d:%d]\n", vf->abs_vfid, qid);
/* Prepare ramrod information */
q_params = &qctor->qstate;
q_params->q_obj = &bnx2x_vfq(vf, qid, sp_obj);
set_bit(RAMROD_COMP_WAIT, &q_params->ramrod_flags);
if (bnx2x_get_q_logical_state(bp, q_params->q_obj) ==
BNX2X_Q_LOGICAL_STATE_ACTIVE) {
DP(BNX2X_MSG_IOV, "queue was already up. Aborting gracefully\n");
goto out;
}
/* Run Queue 'construction' ramrods */
q_params->cmd = BNX2X_Q_CMD_INIT;
rc = bnx2x_queue_state_change(bp, q_params);
if (rc)
goto out;
memcpy(&q_params->params.setup, &qctor->prep_qsetup,
sizeof(struct bnx2x_queue_setup_params));
q_params->cmd = BNX2X_Q_CMD_SETUP;
rc = bnx2x_queue_state_change(bp, q_params);
if (rc)
goto out;
/* enable interrupts */
bnx2x_vf_igu_ack_sb(bp, vf, vf_igu_sb(vf, bnx2x_vfq(vf, qid, sb_idx)),
USTORM_ID, 0, IGU_INT_ENABLE, 0);
out:
return rc;
}
static int bnx2x_vf_queue_destroy(struct bnx2x *bp, struct bnx2x_virtf *vf,
int qid)
{
enum bnx2x_queue_cmd cmds[] = {BNX2X_Q_CMD_HALT,
BNX2X_Q_CMD_TERMINATE,
BNX2X_Q_CMD_CFC_DEL};
struct bnx2x_queue_state_params q_params;
int rc, i;
DP(BNX2X_MSG_IOV, "vf[%d]\n", vf->abs_vfid);
/* Prepare ramrod information */
memset(&q_params, 0, sizeof(struct bnx2x_queue_state_params));
q_params.q_obj = &bnx2x_vfq(vf, qid, sp_obj);
set_bit(RAMROD_COMP_WAIT, &q_params.ramrod_flags);
if (bnx2x_get_q_logical_state(bp, q_params.q_obj) ==
BNX2X_Q_LOGICAL_STATE_STOPPED) {
DP(BNX2X_MSG_IOV, "queue was already stopped. Aborting gracefully\n");
goto out;
}
/* Run Queue 'destruction' ramrods */
for (i = 0; i < ARRAY_SIZE(cmds); i++) {
q_params.cmd = cmds[i];
rc = bnx2x_queue_state_change(bp, &q_params);
if (rc) {
BNX2X_ERR("Failed to run Queue command %d\n", cmds[i]);
return rc;
}
}
out:
/* Clean Context */
if (bnx2x_vfq(vf, qid, cxt)) {
bnx2x_vfq(vf, qid, cxt)->ustorm_ag_context.cdu_usage = 0;
bnx2x_vfq(vf, qid, cxt)->xstorm_ag_context.cdu_reserved = 0;
}
return 0;
}
static void
bnx2x_vf_set_igu_info(struct bnx2x *bp, u8 igu_sb_id, u8 abs_vfid)
{
struct bnx2x_virtf *vf = bnx2x_vf_by_abs_fid(bp, abs_vfid);
if (vf) {
/* the first igu entry belonging to VFs of this PF */
if (!BP_VFDB(bp)->first_vf_igu_entry)
BP_VFDB(bp)->first_vf_igu_entry = igu_sb_id;
/* the first igu entry belonging to this VF */
if (!vf_sb_count(vf))
vf->igu_base_id = igu_sb_id;
++vf_sb_count(vf);
++vf->sb_count;
}
BP_VFDB(bp)->vf_sbs_pool++;
}
static inline void bnx2x_vf_vlan_credit(struct bnx2x *bp,
struct bnx2x_vlan_mac_obj *obj,
atomic_t *counter)
{
struct list_head *pos;
int read_lock;
int cnt = 0;
read_lock = bnx2x_vlan_mac_h_read_lock(bp, obj);
if (read_lock)
DP(BNX2X_MSG_SP, "Failed to take vlan mac read head; continuing anyway\n");
list_for_each(pos, &obj->head)
cnt++;
if (!read_lock)
bnx2x_vlan_mac_h_read_unlock(bp, obj);
atomic_set(counter, cnt);
}
static int bnx2x_vf_vlan_mac_clear(struct bnx2x *bp, struct bnx2x_virtf *vf,
int qid, bool drv_only, int type)
{
struct bnx2x_vlan_mac_ramrod_params ramrod;
int rc;
DP(BNX2X_MSG_IOV, "vf[%d] - deleting all %s\n", vf->abs_vfid,
(type == BNX2X_VF_FILTER_VLAN_MAC) ? "VLAN-MACs" :
(type == BNX2X_VF_FILTER_MAC) ? "MACs" : "VLANs");
/* Prepare ramrod params */
memset(&ramrod, 0, sizeof(struct bnx2x_vlan_mac_ramrod_params));
if (type == BNX2X_VF_FILTER_VLAN_MAC) {
set_bit(BNX2X_ETH_MAC, &ramrod.user_req.vlan_mac_flags);
ramrod.vlan_mac_obj = &bnx2x_vfq(vf, qid, vlan_mac_obj);
} else if (type == BNX2X_VF_FILTER_MAC) {
set_bit(BNX2X_ETH_MAC, &ramrod.user_req.vlan_mac_flags);
ramrod.vlan_mac_obj = &bnx2x_vfq(vf, qid, mac_obj);
} else {
ramrod.vlan_mac_obj = &bnx2x_vfq(vf, qid, vlan_obj);
}
ramrod.user_req.cmd = BNX2X_VLAN_MAC_DEL;
set_bit(RAMROD_EXEC, &ramrod.ramrod_flags);
if (drv_only)
set_bit(RAMROD_DRV_CLR_ONLY, &ramrod.ramrod_flags);
else
set_bit(RAMROD_COMP_WAIT, &ramrod.ramrod_flags);
/* Start deleting */
rc = ramrod.vlan_mac_obj->delete_all(bp,
ramrod.vlan_mac_obj,
&ramrod.user_req.vlan_mac_flags,
&ramrod.ramrod_flags);
if (rc) {
BNX2X_ERR("Failed to delete all %s\n",
(type == BNX2X_VF_FILTER_VLAN_MAC) ? "VLAN-MACs" :
(type == BNX2X_VF_FILTER_MAC) ? "MACs" : "VLANs");
return rc;
}
return 0;
}
static int bnx2x_vf_mac_vlan_config(struct bnx2x *bp,
struct bnx2x_virtf *vf, int qid,
struct bnx2x_vf_mac_vlan_filter *filter,
bool drv_only)
{
struct bnx2x_vlan_mac_ramrod_params ramrod;
int rc;
DP(BNX2X_MSG_IOV, "vf[%d] - %s a %s filter\n",
vf->abs_vfid, filter->add ? "Adding" : "Deleting",
(filter->type == BNX2X_VF_FILTER_VLAN_MAC) ? "VLAN-MAC" :
(filter->type == BNX2X_VF_FILTER_MAC) ? "MAC" : "VLAN");
/* Prepare ramrod params */
memset(&ramrod, 0, sizeof(struct bnx2x_vlan_mac_ramrod_params));
if (filter->type == BNX2X_VF_FILTER_VLAN_MAC) {
ramrod.vlan_mac_obj = &bnx2x_vfq(vf, qid, vlan_mac_obj);
ramrod.user_req.u.vlan.vlan = filter->vid;
memcpy(&ramrod.user_req.u.mac.mac, filter->mac, ETH_ALEN);
set_bit(BNX2X_ETH_MAC, &ramrod.user_req.vlan_mac_flags);
} else if (filter->type == BNX2X_VF_FILTER_VLAN) {
ramrod.vlan_mac_obj = &bnx2x_vfq(vf, qid, vlan_obj);
ramrod.user_req.u.vlan.vlan = filter->vid;
} else {
set_bit(BNX2X_ETH_MAC, &ramrod.user_req.vlan_mac_flags);
ramrod.vlan_mac_obj = &bnx2x_vfq(vf, qid, mac_obj);
memcpy(&ramrod.user_req.u.mac.mac, filter->mac, ETH_ALEN);
}
ramrod.user_req.cmd = filter->add ? BNX2X_VLAN_MAC_ADD :
BNX2X_VLAN_MAC_DEL;
set_bit(RAMROD_EXEC, &ramrod.ramrod_flags);
if (drv_only)
set_bit(RAMROD_DRV_CLR_ONLY, &ramrod.ramrod_flags);
else
set_bit(RAMROD_COMP_WAIT, &ramrod.ramrod_flags);
/* Add/Remove the filter */
rc = bnx2x_config_vlan_mac(bp, &ramrod);
if (rc && rc != -EEXIST) {
BNX2X_ERR("Failed to %s %s\n",
filter->add ? "add" : "delete",
(filter->type == BNX2X_VF_FILTER_VLAN_MAC) ?
"VLAN-MAC" :
(filter->type == BNX2X_VF_FILTER_MAC) ?
"MAC" : "VLAN");
return rc;
}
return 0;
}
int bnx2x_vf_mac_vlan_config_list(struct bnx2x *bp, struct bnx2x_virtf *vf,
struct bnx2x_vf_mac_vlan_filters *filters,
int qid, bool drv_only)
{
int rc = 0, i;
DP(BNX2X_MSG_IOV, "vf[%d]\n", vf->abs_vfid);
if (!bnx2x_validate_vf_sp_objs(bp, vf, true))
return -EINVAL;
/* Prepare ramrod params */
for (i = 0; i < filters->count; i++) {
rc = bnx2x_vf_mac_vlan_config(bp, vf, qid,
&filters->filters[i], drv_only);
if (rc)
break;
}
/* Rollback if needed */
if (i != filters->count) {
BNX2X_ERR("Managed only %d/%d filters - rolling back\n",
i, filters->count + 1);
while (--i >= 0) {
filters->filters[i].add = !filters->filters[i].add;
bnx2x_vf_mac_vlan_config(bp, vf, qid,
&filters->filters[i],
drv_only);
}
}
/* It's our responsibility to free the filters */
kfree(filters);
return rc;
}
int bnx2x_vf_queue_setup(struct bnx2x *bp, struct bnx2x_virtf *vf, int qid,
struct bnx2x_vf_queue_construct_params *qctor)
{
int rc;
DP(BNX2X_MSG_IOV, "vf[%d:%d]\n", vf->abs_vfid, qid);
rc = bnx2x_vf_queue_create(bp, vf, qid, qctor);
if (rc)
goto op_err;
/* Schedule the configuration of any pending vlan filters */
bnx2x_schedule_sp_rtnl(bp, BNX2X_SP_RTNL_HYPERVISOR_VLAN,
BNX2X_MSG_IOV);
return 0;
op_err:
BNX2X_ERR("QSETUP[%d:%d] error: rc %d\n", vf->abs_vfid, qid, rc);
return rc;
}
static int bnx2x_vf_queue_flr(struct bnx2x *bp, struct bnx2x_virtf *vf,
int qid)
{
int rc;
DP(BNX2X_MSG_IOV, "vf[%d:%d]\n", vf->abs_vfid, qid);
/* If needed, clean the filtering data base */
if ((qid == LEADING_IDX) &&
bnx2x_validate_vf_sp_objs(bp, vf, false)) {
rc = bnx2x_vf_vlan_mac_clear(bp, vf, qid, true,
BNX2X_VF_FILTER_VLAN_MAC);
if (rc)
goto op_err;
rc = bnx2x_vf_vlan_mac_clear(bp, vf, qid, true,
BNX2X_VF_FILTER_VLAN);
if (rc)
goto op_err;
rc = bnx2x_vf_vlan_mac_clear(bp, vf, qid, true,
BNX2X_VF_FILTER_MAC);
if (rc)
goto op_err;
}
/* Terminate queue */
if (bnx2x_vfq(vf, qid, sp_obj).state != BNX2X_Q_STATE_RESET) {
struct bnx2x_queue_state_params qstate;
memset(&qstate, 0, sizeof(struct bnx2x_queue_state_params));
qstate.q_obj = &bnx2x_vfq(vf, qid, sp_obj);
qstate.q_obj->state = BNX2X_Q_STATE_STOPPED;
qstate.cmd = BNX2X_Q_CMD_TERMINATE;
set_bit(RAMROD_COMP_WAIT, &qstate.ramrod_flags);
rc = bnx2x_queue_state_change(bp, &qstate);
if (rc)
goto op_err;
}
return 0;
op_err:
BNX2X_ERR("vf[%d:%d] error: rc %d\n", vf->abs_vfid, qid, rc);
return rc;
}
int bnx2x_vf_mcast(struct bnx2x *bp, struct bnx2x_virtf *vf,
bnx2x_mac_addr_t *mcasts, int mc_num, bool drv_only)
{
struct bnx2x_mcast_list_elem *mc = NULL;
struct bnx2x_mcast_ramrod_params mcast;
int rc, i;
DP(BNX2X_MSG_IOV, "vf[%d]\n", vf->abs_vfid);
/* Prepare Multicast command */
memset(&mcast, 0, sizeof(struct bnx2x_mcast_ramrod_params));
mcast.mcast_obj = &vf->mcast_obj;
if (drv_only)
set_bit(RAMROD_DRV_CLR_ONLY, &mcast.ramrod_flags);
else
set_bit(RAMROD_COMP_WAIT, &mcast.ramrod_flags);
if (mc_num) {
mc = kzalloc(mc_num * sizeof(struct bnx2x_mcast_list_elem),
GFP_KERNEL);
if (!mc) {
BNX2X_ERR("Cannot Configure multicasts due to lack of memory\n");
return -ENOMEM;
}
}
/* clear existing mcasts */
mcast.mcast_list_len = vf->mcast_list_len;
vf->mcast_list_len = mc_num;
rc = bnx2x_config_mcast(bp, &mcast, BNX2X_MCAST_CMD_DEL);
if (rc) {
BNX2X_ERR("Failed to remove multicasts\n");
kfree(mc);
return rc;
}
/* update mcast list on the ramrod params */
if (mc_num) {
INIT_LIST_HEAD(&mcast.mcast_list);
for (i = 0; i < mc_num; i++) {
mc[i].mac = mcasts[i];
list_add_tail(&mc[i].link,
&mcast.mcast_list);
}
/* add new mcasts */
mcast.mcast_list_len = mc_num;
rc = bnx2x_config_mcast(bp, &mcast, BNX2X_MCAST_CMD_ADD);
if (rc)
BNX2X_ERR("Faled to add multicasts\n");
kfree(mc);
}
return rc;
}
static void bnx2x_vf_prep_rx_mode(struct bnx2x *bp, u8 qid,
struct bnx2x_rx_mode_ramrod_params *ramrod,
struct bnx2x_virtf *vf,
unsigned long accept_flags)
{
struct bnx2x_vf_queue *vfq = vfq_get(vf, qid);
memset(ramrod, 0, sizeof(*ramrod));
ramrod->cid = vfq->cid;
ramrod->cl_id = vfq_cl_id(vf, vfq);
ramrod->rx_mode_obj = &bp->rx_mode_obj;
ramrod->func_id = FW_VF_HANDLE(vf->abs_vfid);
ramrod->rx_accept_flags = accept_flags;
ramrod->tx_accept_flags = accept_flags;
ramrod->pstate = &vf->filter_state;
ramrod->state = BNX2X_FILTER_RX_MODE_PENDING;
set_bit(BNX2X_FILTER_RX_MODE_PENDING, &vf->filter_state);
set_bit(RAMROD_RX, &ramrod->ramrod_flags);
set_bit(RAMROD_TX, &ramrod->ramrod_flags);
ramrod->rdata = bnx2x_vf_sp(bp, vf, rx_mode_rdata.e2);
ramrod->rdata_mapping = bnx2x_vf_sp_map(bp, vf, rx_mode_rdata.e2);
}
int bnx2x_vf_rxmode(struct bnx2x *bp, struct bnx2x_virtf *vf,
int qid, unsigned long accept_flags)
{
struct bnx2x_rx_mode_ramrod_params ramrod;
DP(BNX2X_MSG_IOV, "vf[%d]\n", vf->abs_vfid);
bnx2x_vf_prep_rx_mode(bp, qid, &ramrod, vf, accept_flags);
set_bit(RAMROD_COMP_WAIT, &ramrod.ramrod_flags);
vfq_get(vf, qid)->accept_flags = ramrod.rx_accept_flags;
return bnx2x_config_rx_mode(bp, &ramrod);
}
int bnx2x_vf_queue_teardown(struct bnx2x *bp, struct bnx2x_virtf *vf, int qid)
{
int rc;
DP(BNX2X_MSG_IOV, "vf[%d:%d]\n", vf->abs_vfid, qid);
/* Remove all classification configuration for leading queue */
if (qid == LEADING_IDX) {
rc = bnx2x_vf_rxmode(bp, vf, qid, 0);
if (rc)
goto op_err;
/* Remove filtering if feasible */
if (bnx2x_validate_vf_sp_objs(bp, vf, true)) {
rc = bnx2x_vf_vlan_mac_clear(bp, vf, qid,
false,
BNX2X_VF_FILTER_VLAN_MAC);
if (rc)
goto op_err;
rc = bnx2x_vf_vlan_mac_clear(bp, vf, qid,
false,
BNX2X_VF_FILTER_VLAN);
if (rc)
goto op_err;
rc = bnx2x_vf_vlan_mac_clear(bp, vf, qid,
false,
BNX2X_VF_FILTER_MAC);
if (rc)
goto op_err;
rc = bnx2x_vf_mcast(bp, vf, NULL, 0, false);
if (rc)
goto op_err;
}
}
/* Destroy queue */
rc = bnx2x_vf_queue_destroy(bp, vf, qid);
if (rc)
goto op_err;
return rc;
op_err:
BNX2X_ERR("vf[%d:%d] error: rc %d\n",
vf->abs_vfid, qid, rc);
return rc;
}
/* VF enable primitives
* when pretend is required the caller is responsible
* for calling pretend prior to calling these routines
*/
/* internal vf enable - until vf is enabled internally all transactions
* are blocked. This routine should always be called last with pretend.
*/
static void bnx2x_vf_enable_internal(struct bnx2x *bp, u8 enable)
{
REG_WR(bp, PGLUE_B_REG_INTERNAL_VFID_ENABLE, enable ? 1 : 0);
}
/* clears vf error in all semi blocks */
static void bnx2x_vf_semi_clear_err(struct bnx2x *bp, u8 abs_vfid)
{
REG_WR(bp, TSEM_REG_VFPF_ERR_NUM, abs_vfid);
REG_WR(bp, USEM_REG_VFPF_ERR_NUM, abs_vfid);
REG_WR(bp, CSEM_REG_VFPF_ERR_NUM, abs_vfid);
REG_WR(bp, XSEM_REG_VFPF_ERR_NUM, abs_vfid);
}
static void bnx2x_vf_pglue_clear_err(struct bnx2x *bp, u8 abs_vfid)
{
u32 was_err_group = (2 * BP_PATH(bp) + abs_vfid) >> 5;
u32 was_err_reg = 0;
switch (was_err_group) {
case 0:
was_err_reg = PGLUE_B_REG_WAS_ERROR_VF_31_0_CLR;
break;
case 1:
was_err_reg = PGLUE_B_REG_WAS_ERROR_VF_63_32_CLR;
break;
case 2:
was_err_reg = PGLUE_B_REG_WAS_ERROR_VF_95_64_CLR;
break;
case 3:
was_err_reg = PGLUE_B_REG_WAS_ERROR_VF_127_96_CLR;
break;
}
REG_WR(bp, was_err_reg, 1 << (abs_vfid & 0x1f));
}
static void bnx2x_vf_igu_reset(struct bnx2x *bp, struct bnx2x_virtf *vf)
{
int i;
u32 val;
/* Set VF masks and configuration - pretend */
bnx2x_pretend_func(bp, HW_VF_HANDLE(bp, vf->abs_vfid));
REG_WR(bp, IGU_REG_SB_INT_BEFORE_MASK_LSB, 0);
REG_WR(bp, IGU_REG_SB_INT_BEFORE_MASK_MSB, 0);
REG_WR(bp, IGU_REG_SB_MASK_LSB, 0);
REG_WR(bp, IGU_REG_SB_MASK_MSB, 0);
REG_WR(bp, IGU_REG_PBA_STATUS_LSB, 0);
REG_WR(bp, IGU_REG_PBA_STATUS_MSB, 0);
val = REG_RD(bp, IGU_REG_VF_CONFIGURATION);
val |= (IGU_VF_CONF_FUNC_EN | IGU_VF_CONF_MSI_MSIX_EN);
val &= ~IGU_VF_CONF_PARENT_MASK;
val |= (BP_ABS_FUNC(bp) >> 1) << IGU_VF_CONF_PARENT_SHIFT;
REG_WR(bp, IGU_REG_VF_CONFIGURATION, val);
DP(BNX2X_MSG_IOV,
"value in IGU_REG_VF_CONFIGURATION of vf %d after write is 0x%08x\n",
vf->abs_vfid, val);
bnx2x_pretend_func(bp, BP_ABS_FUNC(bp));
/* iterate over all queues, clear sb consumer */
for (i = 0; i < vf_sb_count(vf); i++) {
u8 igu_sb_id = vf_igu_sb(vf, i);
/* zero prod memory */
REG_WR(bp, IGU_REG_PROD_CONS_MEMORY + igu_sb_id * 4, 0);
/* clear sb state machine */
bnx2x_igu_clear_sb_gen(bp, vf->abs_vfid, igu_sb_id,
false /* VF */);
/* disable + update */
bnx2x_vf_igu_ack_sb(bp, vf, igu_sb_id, USTORM_ID, 0,
IGU_INT_DISABLE, 1);
}
}
void bnx2x_vf_enable_access(struct bnx2x *bp, u8 abs_vfid)
{
/* set the VF-PF association in the FW */
storm_memset_vf_to_pf(bp, FW_VF_HANDLE(abs_vfid), BP_FUNC(bp));
storm_memset_func_en(bp, FW_VF_HANDLE(abs_vfid), 1);
/* clear vf errors*/
bnx2x_vf_semi_clear_err(bp, abs_vfid);
bnx2x_vf_pglue_clear_err(bp, abs_vfid);
/* internal vf-enable - pretend */
bnx2x_pretend_func(bp, HW_VF_HANDLE(bp, abs_vfid));
DP(BNX2X_MSG_IOV, "enabling internal access for vf %x\n", abs_vfid);
bnx2x_vf_enable_internal(bp, true);
bnx2x_pretend_func(bp, BP_ABS_FUNC(bp));
}
static void bnx2x_vf_enable_traffic(struct bnx2x *bp, struct bnx2x_virtf *vf)
{
/* Reset vf in IGU interrupts are still disabled */
bnx2x_vf_igu_reset(bp, vf);
/* pretend to enable the vf with the PBF */
bnx2x_pretend_func(bp, HW_VF_HANDLE(bp, vf->abs_vfid));
REG_WR(bp, PBF_REG_DISABLE_VF, 0);
bnx2x_pretend_func(bp, BP_ABS_FUNC(bp));
}
static u8 bnx2x_vf_is_pcie_pending(struct bnx2x *bp, u8 abs_vfid)
{
struct pci_dev *dev;
struct bnx2x_virtf *vf = bnx2x_vf_by_abs_fid(bp, abs_vfid);
if (!vf)
return false;
dev = pci_get_bus_and_slot(vf->bus, vf->devfn);
if (dev)
return bnx2x_is_pcie_pending(dev);
return false;
}
int bnx2x_vf_flr_clnup_epilog(struct bnx2x *bp, u8 abs_vfid)
{
/* Verify no pending pci transactions */
if (bnx2x_vf_is_pcie_pending(bp, abs_vfid))
BNX2X_ERR("PCIE Transactions still pending\n");
return 0;
}
/* must be called after the number of PF queues and the number of VFs are
* both known
*/
static void
bnx2x_iov_static_resc(struct bnx2x *bp, struct bnx2x_virtf *vf)
{
struct vf_pf_resc_request *resc = &vf->alloc_resc;
/* will be set only during VF-ACQUIRE */
resc->num_rxqs = 0;
resc->num_txqs = 0;
resc->num_mac_filters = VF_MAC_CREDIT_CNT;
resc->num_vlan_filters = VF_VLAN_CREDIT_CNT;
/* no real limitation */
resc->num_mc_filters = 0;
/* num_sbs already set */
resc->num_sbs = vf->sb_count;
}
/* FLR routines: */
static void bnx2x_vf_free_resc(struct bnx2x *bp, struct bnx2x_virtf *vf)
{
/* reset the state variables */
bnx2x_iov_static_resc(bp, vf);
vf->state = VF_FREE;
}
static void bnx2x_vf_flr_clnup_hw(struct bnx2x *bp, struct bnx2x_virtf *vf)
{
u32 poll_cnt = bnx2x_flr_clnup_poll_count(bp);
/* DQ usage counter */
bnx2x_pretend_func(bp, HW_VF_HANDLE(bp, vf->abs_vfid));
bnx2x_flr_clnup_poll_hw_counter(bp, DORQ_REG_VF_USAGE_CNT,
"DQ VF usage counter timed out",
poll_cnt);
bnx2x_pretend_func(bp, BP_ABS_FUNC(bp));
/* FW cleanup command - poll for the results */
if (bnx2x_send_final_clnup(bp, (u8)FW_VF_HANDLE(vf->abs_vfid),
poll_cnt))
BNX2X_ERR("VF[%d] Final cleanup timed-out\n", vf->abs_vfid);
/* verify TX hw is flushed */
bnx2x_tx_hw_flushed(bp, poll_cnt);
}
static void bnx2x_vf_flr(struct bnx2x *bp, struct bnx2x_virtf *vf)
{
int rc, i;
DP(BNX2X_MSG_IOV, "vf[%d]\n", vf->abs_vfid);
/* the cleanup operations are valid if and only if the VF
* was first acquired.
*/
for (i = 0; i < vf_rxq_count(vf); i++) {
rc = bnx2x_vf_queue_flr(bp, vf, i);
if (rc)
goto out;
}
/* remove multicasts */
bnx2x_vf_mcast(bp, vf, NULL, 0, true);
/* dispatch final cleanup and wait for HW queues to flush */
bnx2x_vf_flr_clnup_hw(bp, vf);
/* release VF resources */
bnx2x_vf_free_resc(bp, vf);
/* re-open the mailbox */
bnx2x_vf_enable_mbx(bp, vf->abs_vfid);
return;
out:
BNX2X_ERR("vf[%d:%d] failed flr: rc %d\n",
vf->abs_vfid, i, rc);
}
static void bnx2x_vf_flr_clnup(struct bnx2x *bp)
{
struct bnx2x_virtf *vf;
int i;
for (i = 0; i < BNX2X_NR_VIRTFN(bp); i++) {
/* VF should be RESET & in FLR cleanup states */
if (bnx2x_vf(bp, i, state) != VF_RESET ||
!bnx2x_vf(bp, i, flr_clnup_stage))
continue;
DP(BNX2X_MSG_IOV, "next vf to cleanup: %d. Num of vfs: %d\n",
i, BNX2X_NR_VIRTFN(bp));
vf = BP_VF(bp, i);
/* lock the vf pf channel */
bnx2x_lock_vf_pf_channel(bp, vf, CHANNEL_TLV_FLR);
/* invoke the VF FLR SM */
bnx2x_vf_flr(bp, vf);
/* mark the VF to be ACKED and continue */
vf->flr_clnup_stage = false;
bnx2x_unlock_vf_pf_channel(bp, vf, CHANNEL_TLV_FLR);
}
/* Acknowledge the handled VFs.
* we are acknowledge all the vfs which an flr was requested for, even
* if amongst them there are such that we never opened, since the mcp
* will interrupt us immediately again if we only ack some of the bits,
* resulting in an endless loop. This can happen for example in KVM
* where an 'all ones' flr request is sometimes given by hyper visor
*/
DP(BNX2X_MSG_MCP, "DRV_STATUS_VF_DISABLED ACK for vfs 0x%x 0x%x\n",
bp->vfdb->flrd_vfs[0], bp->vfdb->flrd_vfs[1]);
for (i = 0; i < FLRD_VFS_DWORDS; i++)
SHMEM2_WR(bp, drv_ack_vf_disabled[BP_FW_MB_IDX(bp)][i],
bp->vfdb->flrd_vfs[i]);
bnx2x_fw_command(bp, DRV_MSG_CODE_VF_DISABLED_DONE, 0);
/* clear the acked bits - better yet if the MCP implemented
* write to clear semantics
*/
for (i = 0; i < FLRD_VFS_DWORDS; i++)
SHMEM2_WR(bp, drv_ack_vf_disabled[BP_FW_MB_IDX(bp)][i], 0);
}
void bnx2x_vf_handle_flr_event(struct bnx2x *bp)
{
int i;
/* Read FLR'd VFs */
for (i = 0; i < FLRD_VFS_DWORDS; i++)
bp->vfdb->flrd_vfs[i] = SHMEM2_RD(bp, mcp_vf_disabled[i]);
DP(BNX2X_MSG_MCP,
"DRV_STATUS_VF_DISABLED received for vfs 0x%x 0x%x\n",
bp->vfdb->flrd_vfs[0], bp->vfdb->flrd_vfs[1]);
for_each_vf(bp, i) {
struct bnx2x_virtf *vf = BP_VF(bp, i);
u32 reset = 0;
if (vf->abs_vfid < 32)
reset = bp->vfdb->flrd_vfs[0] & (1 << vf->abs_vfid);
else
reset = bp->vfdb->flrd_vfs[1] &
(1 << (vf->abs_vfid - 32));
if (reset) {
/* set as reset and ready for cleanup */
vf->state = VF_RESET;
vf->flr_clnup_stage = true;
DP(BNX2X_MSG_IOV,
"Initiating Final cleanup for VF %d\n",
vf->abs_vfid);
}
}
/* do the FLR cleanup for all marked VFs*/
bnx2x_vf_flr_clnup(bp);
}
/* IOV global initialization routines */
void bnx2x_iov_init_dq(struct bnx2x *bp)
{
if (!IS_SRIOV(bp))
return;
/* Set the DQ such that the CID reflect the abs_vfid */
REG_WR(bp, DORQ_REG_VF_NORM_VF_BASE, 0);
REG_WR(bp, DORQ_REG_MAX_RVFID_SIZE, ilog2(BNX2X_MAX_NUM_OF_VFS));
/* Set VFs starting CID. If its > 0 the preceding CIDs are belong to
* the PF L2 queues
*/
REG_WR(bp, DORQ_REG_VF_NORM_CID_BASE, BNX2X_FIRST_VF_CID);
/* The VF window size is the log2 of the max number of CIDs per VF */
REG_WR(bp, DORQ_REG_VF_NORM_CID_WND_SIZE, BNX2X_VF_CID_WND);
/* The VF doorbell size 0 - *B, 4 - 128B. We set it here to match
* the Pf doorbell size although the 2 are independent.
*/
REG_WR(bp, DORQ_REG_VF_NORM_CID_OFST, 3);
/* No security checks for now -
* configure single rule (out of 16) mask = 0x1, value = 0x0,
* CID range 0 - 0x1ffff
*/
REG_WR(bp, DORQ_REG_VF_TYPE_MASK_0, 1);
REG_WR(bp, DORQ_REG_VF_TYPE_VALUE_0, 0);
REG_WR(bp, DORQ_REG_VF_TYPE_MIN_MCID_0, 0);
REG_WR(bp, DORQ_REG_VF_TYPE_MAX_MCID_0, 0x1ffff);
/* set the VF doorbell threshold. This threshold represents the amount
* of doorbells allowed in the main DORQ fifo for a specific VF.
*/
REG_WR(bp, DORQ_REG_VF_USAGE_CT_LIMIT, 64);
}
void bnx2x_iov_init_dmae(struct bnx2x *bp)
{
if (pci_find_ext_capability(bp->pdev, PCI_EXT_CAP_ID_SRIOV))
REG_WR(bp, DMAE_REG_BACKWARD_COMP_EN, 0);
}
static int bnx2x_vf_bus(struct bnx2x *bp, int vfid)
{
struct pci_dev *dev = bp->pdev;
struct bnx2x_sriov *iov = &bp->vfdb->sriov;
return dev->bus->number + ((dev->devfn + iov->offset +
iov->stride * vfid) >> 8);
}
static int bnx2x_vf_devfn(struct bnx2x *bp, int vfid)
{
struct pci_dev *dev = bp->pdev;
struct bnx2x_sriov *iov = &bp->vfdb->sriov;
return (dev->devfn + iov->offset + iov->stride * vfid) & 0xff;
}
static void bnx2x_vf_set_bars(struct bnx2x *bp, struct bnx2x_virtf *vf)
{
int i, n;
struct pci_dev *dev = bp->pdev;
struct bnx2x_sriov *iov = &bp->vfdb->sriov;
for (i = 0, n = 0; i < PCI_SRIOV_NUM_BARS; i += 2, n++) {
u64 start = pci_resource_start(dev, PCI_IOV_RESOURCES + i);
u32 size = pci_resource_len(dev, PCI_IOV_RESOURCES + i);
size /= iov->total;
vf->bars[n].bar = start + size * vf->abs_vfid;
vf->bars[n].size = size;
}
}
static int bnx2x_ari_enabled(struct pci_dev *dev)
{
return dev->bus->self && dev->bus->self->ari_enabled;
}
static int
bnx2x_get_vf_igu_cam_info(struct bnx2x *bp)
{
int sb_id;
u32 val;
u8 fid, current_pf = 0;
/* IGU in normal mode - read CAM */
for (sb_id = 0; sb_id < IGU_REG_MAPPING_MEMORY_SIZE; sb_id++) {
val = REG_RD(bp, IGU_REG_MAPPING_MEMORY + sb_id * 4);
if (!(val & IGU_REG_MAPPING_MEMORY_VALID))
continue;
fid = GET_FIELD((val), IGU_REG_MAPPING_MEMORY_FID);
if (fid & IGU_FID_ENCODE_IS_PF)
current_pf = fid & IGU_FID_PF_NUM_MASK;
else if (current_pf == BP_FUNC(bp))
bnx2x_vf_set_igu_info(bp, sb_id,
(fid & IGU_FID_VF_NUM_MASK));
DP(BNX2X_MSG_IOV, "%s[%d], igu_sb_id=%d, msix=%d\n",
((fid & IGU_FID_ENCODE_IS_PF) ? "PF" : "VF"),
((fid & IGU_FID_ENCODE_IS_PF) ? (fid & IGU_FID_PF_NUM_MASK) :
(fid & IGU_FID_VF_NUM_MASK)), sb_id,
GET_FIELD((val), IGU_REG_MAPPING_MEMORY_VECTOR));
}
DP(BNX2X_MSG_IOV, "vf_sbs_pool is %d\n", BP_VFDB(bp)->vf_sbs_pool);
return BP_VFDB(bp)->vf_sbs_pool;
}
static void __bnx2x_iov_free_vfdb(struct bnx2x *bp)
{
if (bp->vfdb) {
kfree(bp->vfdb->vfqs);
kfree(bp->vfdb->vfs);
kfree(bp->vfdb);
}
bp->vfdb = NULL;
}
static int bnx2x_sriov_pci_cfg_info(struct bnx2x *bp, struct bnx2x_sriov *iov)
{
int pos;
struct pci_dev *dev = bp->pdev;
pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_SRIOV);
if (!pos) {
BNX2X_ERR("failed to find SRIOV capability in device\n");
return -ENODEV;
}
iov->pos = pos;
DP(BNX2X_MSG_IOV, "sriov ext pos %d\n", pos);
pci_read_config_word(dev, pos + PCI_SRIOV_CTRL, &iov->ctrl);
pci_read_config_word(dev, pos + PCI_SRIOV_TOTAL_VF, &iov->total);
pci_read_config_word(dev, pos + PCI_SRIOV_INITIAL_VF, &iov->initial);
pci_read_config_word(dev, pos + PCI_SRIOV_VF_OFFSET, &iov->offset);
pci_read_config_word(dev, pos + PCI_SRIOV_VF_STRIDE, &iov->stride);
pci_read_config_dword(dev, pos + PCI_SRIOV_SUP_PGSIZE, &iov->pgsz);
pci_read_config_dword(dev, pos + PCI_SRIOV_CAP, &iov->cap);
pci_read_config_byte(dev, pos + PCI_SRIOV_FUNC_LINK, &iov->link);
return 0;
}
static int bnx2x_sriov_info(struct bnx2x *bp, struct bnx2x_sriov *iov)
{
u32 val;
/* read the SRIOV capability structure
* The fields can be read via configuration read or
* directly from the device (starting at offset PCICFG_OFFSET)
*/
if (bnx2x_sriov_pci_cfg_info(bp, iov))
return -ENODEV;
/* get the number of SRIOV bars */
iov->nres = 0;
/* read the first_vfid */
val = REG_RD(bp, PCICFG_OFFSET + GRC_CONFIG_REG_PF_INIT_VF);
iov->first_vf_in_pf = ((val & GRC_CR_PF_INIT_VF_PF_FIRST_VF_NUM_MASK)
* 8) - (BNX2X_MAX_NUM_OF_VFS * BP_PATH(bp));
DP(BNX2X_MSG_IOV,
"IOV info[%d]: first vf %d, nres %d, cap 0x%x, ctrl 0x%x, total %d, initial %d, num vfs %d, offset %d, stride %d, page size 0x%x\n",
BP_FUNC(bp),
iov->first_vf_in_pf, iov->nres, iov->cap, iov->ctrl, iov->total,
iov->initial, iov->nr_virtfn, iov->offset, iov->stride, iov->pgsz);
return 0;
}
/* must be called after PF bars are mapped */
int bnx2x_iov_init_one(struct bnx2x *bp, int int_mode_param,
int num_vfs_param)
{
int err, i;
struct bnx2x_sriov *iov;
struct pci_dev *dev = bp->pdev;
bp->vfdb = NULL;
/* verify is pf */
if (IS_VF(bp))
return 0;
/* verify sriov capability is present in configuration space */
if (!pci_find_ext_capability(dev, PCI_EXT_CAP_ID_SRIOV))
return 0;
/* verify chip revision */
if (CHIP_IS_E1x(bp))
return 0;
/* check if SRIOV support is turned off */
if (!num_vfs_param)
return 0;
/* SRIOV assumes that num of PF CIDs < BNX2X_FIRST_VF_CID */
if (BNX2X_L2_MAX_CID(bp) >= BNX2X_FIRST_VF_CID) {
BNX2X_ERR("PF cids %d are overspilling into vf space (starts at %d). Abort SRIOV\n",
BNX2X_L2_MAX_CID(bp), BNX2X_FIRST_VF_CID);
return 0;
}
/* SRIOV can be enabled only with MSIX */
if (int_mode_param == BNX2X_INT_MODE_MSI ||
int_mode_param == BNX2X_INT_MODE_INTX) {
BNX2X_ERR("Forced MSI/INTx mode is incompatible with SRIOV\n");
return 0;
}
err = -EIO;
/* verify ari is enabled */
if (!bnx2x_ari_enabled(bp->pdev)) {
BNX2X_ERR("ARI not supported (check pci bridge ARI forwarding), SRIOV can not be enabled\n");
return 0;
}
/* verify igu is in normal mode */
if (CHIP_INT_MODE_IS_BC(bp)) {
BNX2X_ERR("IGU not normal mode, SRIOV can not be enabled\n");
return 0;
}
/* allocate the vfs database */
bp->vfdb = kzalloc(sizeof(*(bp->vfdb)), GFP_KERNEL);
if (!bp->vfdb) {
BNX2X_ERR("failed to allocate vf database\n");
err = -ENOMEM;
goto failed;
}
/* get the sriov info - Linux already collected all the pertinent
* information, however the sriov structure is for the private use
* of the pci module. Also we want this information regardless
* of the hyper-visor.
*/
iov = &(bp->vfdb->sriov);
err = bnx2x_sriov_info(bp, iov);
if (err)
goto failed;
/* SR-IOV capability was enabled but there are no VFs*/
if (iov->total == 0)
goto failed;
iov->nr_virtfn = min_t(u16, iov->total, num_vfs_param);
DP(BNX2X_MSG_IOV, "num_vfs_param was %d, nr_virtfn was %d\n",
num_vfs_param, iov->nr_virtfn);
/* allocate the vf array */
bp->vfdb->vfs = kzalloc(sizeof(struct bnx2x_virtf) *
BNX2X_NR_VIRTFN(bp), GFP_KERNEL);
if (!bp->vfdb->vfs) {
BNX2X_ERR("failed to allocate vf array\n");
err = -ENOMEM;
goto failed;
}
/* Initial VF init - index and abs_vfid - nr_virtfn must be set */
for_each_vf(bp, i) {
bnx2x_vf(bp, i, index) = i;
bnx2x_vf(bp, i, abs_vfid) = iov->first_vf_in_pf + i;
bnx2x_vf(bp, i, state) = VF_FREE;
mutex_init(&bnx2x_vf(bp, i, op_mutex));
bnx2x_vf(bp, i, op_current) = CHANNEL_TLV_NONE;
}
/* re-read the IGU CAM for VFs - index and abs_vfid must be set */
if (!bnx2x_get_vf_igu_cam_info(bp)) {
BNX2X_ERR("No entries in IGU CAM for vfs\n");
err = -EINVAL;
goto failed;
}
/* allocate the queue arrays for all VFs */
bp->vfdb->vfqs = kzalloc(
BNX2X_MAX_NUM_VF_QUEUES * sizeof(struct bnx2x_vf_queue),
GFP_KERNEL);
if (!bp->vfdb->vfqs) {
BNX2X_ERR("failed to allocate vf queue array\n");
err = -ENOMEM;
goto failed;
}
/* Prepare the VFs event synchronization mechanism */
mutex_init(&bp->vfdb->event_mutex);
mutex_init(&bp->vfdb->bulletin_mutex);
if (SHMEM2_HAS(bp, sriov_switch_mode))
SHMEM2_WR(bp, sriov_switch_mode, SRIOV_SWITCH_MODE_VEB);
return 0;
failed:
DP(BNX2X_MSG_IOV, "Failed err=%d\n", err);
__bnx2x_iov_free_vfdb(bp);
return err;
}
void bnx2x_iov_remove_one(struct bnx2x *bp)
{
int vf_idx;
/* if SRIOV is not enabled there's nothing to do */
if (!IS_SRIOV(bp))
return;
bnx2x_disable_sriov(bp);
/* disable access to all VFs */
for (vf_idx = 0; vf_idx < bp->vfdb->sriov.total; vf_idx++) {
bnx2x_pretend_func(bp,
HW_VF_HANDLE(bp,
bp->vfdb->sriov.first_vf_in_pf +
vf_idx));
DP(BNX2X_MSG_IOV, "disabling internal access for vf %d\n",
bp->vfdb->sriov.first_vf_in_pf + vf_idx);
bnx2x_vf_enable_internal(bp, 0);
bnx2x_pretend_func(bp, BP_ABS_FUNC(bp));
}
/* free vf database */
__bnx2x_iov_free_vfdb(bp);
}
void bnx2x_iov_free_mem(struct bnx2x *bp)
{
int i;
if (!IS_SRIOV(bp))
return;
/* free vfs hw contexts */
for (i = 0; i < BNX2X_VF_CIDS/ILT_PAGE_CIDS; i++) {
struct hw_dma *cxt = &bp->vfdb->context[i];
BNX2X_PCI_FREE(cxt->addr, cxt->mapping, cxt->size);
}
BNX2X_PCI_FREE(BP_VFDB(bp)->sp_dma.addr,
BP_VFDB(bp)->sp_dma.mapping,
BP_VFDB(bp)->sp_dma.size);
BNX2X_PCI_FREE(BP_VF_MBX_DMA(bp)->addr,
BP_VF_MBX_DMA(bp)->mapping,
BP_VF_MBX_DMA(bp)->size);
BNX2X_PCI_FREE(BP_VF_BULLETIN_DMA(bp)->addr,
BP_VF_BULLETIN_DMA(bp)->mapping,
BP_VF_BULLETIN_DMA(bp)->size);
}
int bnx2x_iov_alloc_mem(struct bnx2x *bp)
{
size_t tot_size;
int i, rc = 0;
if (!IS_SRIOV(bp))
return rc;
/* allocate vfs hw contexts */
tot_size = (BP_VFDB(bp)->sriov.first_vf_in_pf + BNX2X_NR_VIRTFN(bp)) *
BNX2X_CIDS_PER_VF * sizeof(union cdu_context);
for (i = 0; i < BNX2X_VF_CIDS/ILT_PAGE_CIDS; i++) {
struct hw_dma *cxt = BP_VF_CXT_PAGE(bp, i);
cxt->size = min_t(size_t, tot_size, CDU_ILT_PAGE_SZ);
if (cxt->size) {
cxt->addr = BNX2X_PCI_ALLOC(&cxt->mapping, cxt->size);
if (!cxt->addr)
goto alloc_mem_err;
} else {
cxt->addr = NULL;
cxt->mapping = 0;
}
tot_size -= cxt->size;
}
/* allocate vfs ramrods dma memory - client_init and set_mac */
tot_size = BNX2X_NR_VIRTFN(bp) * sizeof(struct bnx2x_vf_sp);
BP_VFDB(bp)->sp_dma.addr = BNX2X_PCI_ALLOC(&BP_VFDB(bp)->sp_dma.mapping,
tot_size);
if (!BP_VFDB(bp)->sp_dma.addr)
goto alloc_mem_err;
BP_VFDB(bp)->sp_dma.size = tot_size;
/* allocate mailboxes */
tot_size = BNX2X_NR_VIRTFN(bp) * MBX_MSG_ALIGNED_SIZE;
BP_VF_MBX_DMA(bp)->addr = BNX2X_PCI_ALLOC(&BP_VF_MBX_DMA(bp)->mapping,
tot_size);
if (!BP_VF_MBX_DMA(bp)->addr)
goto alloc_mem_err;
BP_VF_MBX_DMA(bp)->size = tot_size;
/* allocate local bulletin boards */
tot_size = BNX2X_NR_VIRTFN(bp) * BULLETIN_CONTENT_SIZE;
BP_VF_BULLETIN_DMA(bp)->addr = BNX2X_PCI_ALLOC(&BP_VF_BULLETIN_DMA(bp)->mapping,
tot_size);
if (!BP_VF_BULLETIN_DMA(bp)->addr)
goto alloc_mem_err;
BP_VF_BULLETIN_DMA(bp)->size = tot_size;
return 0;
alloc_mem_err:
return -ENOMEM;
}
static void bnx2x_vfq_init(struct bnx2x *bp, struct bnx2x_virtf *vf,
struct bnx2x_vf_queue *q)
{
u8 cl_id = vfq_cl_id(vf, q);
u8 func_id = FW_VF_HANDLE(vf->abs_vfid);
unsigned long q_type = 0;
set_bit(BNX2X_Q_TYPE_HAS_TX, &q_type);
set_bit(BNX2X_Q_TYPE_HAS_RX, &q_type);
/* Queue State object */
bnx2x_init_queue_obj(bp, &q->sp_obj,
cl_id, &q->cid, 1, func_id,
bnx2x_vf_sp(bp, vf, q_data),
bnx2x_vf_sp_map(bp, vf, q_data),
q_type);
/* sp indication is set only when vlan/mac/etc. are initialized */
q->sp_initialized = false;
DP(BNX2X_MSG_IOV,
"initialized vf %d's queue object. func id set to %d. cid set to 0x%x\n",
vf->abs_vfid, q->sp_obj.func_id, q->cid);
}
static int bnx2x_max_speed_cap(struct bnx2x *bp)
{
u32 supported = bp->port.supported[bnx2x_get_link_cfg_idx(bp)];
if (supported &
(SUPPORTED_20000baseMLD2_Full | SUPPORTED_20000baseKR2_Full))
return 20000;
return 10000; /* assume lowest supported speed is 10G */
}
int bnx2x_iov_link_update_vf(struct bnx2x *bp, int idx)
{
struct bnx2x_link_report_data *state = &bp->last_reported_link;
struct pf_vf_bulletin_content *bulletin;
struct bnx2x_virtf *vf;
bool update = true;
int rc = 0;
/* sanity and init */
rc = bnx2x_vf_op_prep(bp, idx, &vf, &bulletin, false);
if (rc)
return rc;
mutex_lock(&bp->vfdb->bulletin_mutex);
if (vf->link_cfg == IFLA_VF_LINK_STATE_AUTO) {
bulletin->valid_bitmap |= 1 << LINK_VALID;
bulletin->link_speed = state->line_speed;
bulletin->link_flags = 0;
if (test_bit(BNX2X_LINK_REPORT_LINK_DOWN,
&state->link_report_flags))
bulletin->link_flags |= VFPF_LINK_REPORT_LINK_DOWN;
if (test_bit(BNX2X_LINK_REPORT_FD,
&state->link_report_flags))
bulletin->link_flags |= VFPF_LINK_REPORT_FULL_DUPLEX;
if (test_bit(BNX2X_LINK_REPORT_RX_FC_ON,
&state->link_report_flags))
bulletin->link_flags |= VFPF_LINK_REPORT_RX_FC_ON;
if (test_bit(BNX2X_LINK_REPORT_TX_FC_ON,
&state->link_report_flags))
bulletin->link_flags |= VFPF_LINK_REPORT_TX_FC_ON;
} else if (vf->link_cfg == IFLA_VF_LINK_STATE_DISABLE &&
!(bulletin->link_flags & VFPF_LINK_REPORT_LINK_DOWN)) {
bulletin->valid_bitmap |= 1 << LINK_VALID;
bulletin->link_flags |= VFPF_LINK_REPORT_LINK_DOWN;
} else if (vf->link_cfg == IFLA_VF_LINK_STATE_ENABLE &&
(bulletin->link_flags & VFPF_LINK_REPORT_LINK_DOWN)) {
bulletin->valid_bitmap |= 1 << LINK_VALID;
bulletin->link_speed = bnx2x_max_speed_cap(bp);
bulletin->link_flags &= ~VFPF_LINK_REPORT_LINK_DOWN;
} else {
update = false;
}
if (update) {
DP(NETIF_MSG_LINK | BNX2X_MSG_IOV,
"vf %d mode %u speed %d flags %x\n", idx,
vf->link_cfg, bulletin->link_speed, bulletin->link_flags);
/* Post update on VF's bulletin board */
rc = bnx2x_post_vf_bulletin(bp, idx);
if (rc) {
BNX2X_ERR("failed to update VF[%d] bulletin\n", idx);
goto out;
}
}
out:
mutex_unlock(&bp->vfdb->bulletin_mutex);
return rc;
}
int bnx2x_set_vf_link_state(struct net_device *dev, int idx, int link_state)
{
struct bnx2x *bp = netdev_priv(dev);
struct bnx2x_virtf *vf = BP_VF(bp, idx);
if (!vf)
return -EINVAL;
if (vf->link_cfg == link_state)
return 0; /* nothing todo */
vf->link_cfg = link_state;
return bnx2x_iov_link_update_vf(bp, idx);
}
void bnx2x_iov_link_update(struct bnx2x *bp)
{
int vfid;
if (!IS_SRIOV(bp))
return;
for_each_vf(bp, vfid)
bnx2x_iov_link_update_vf(bp, vfid);
}
/* called by bnx2x_nic_load */
int bnx2x_iov_nic_init(struct bnx2x *bp)
{
int vfid;
if (!IS_SRIOV(bp)) {
DP(BNX2X_MSG_IOV, "vfdb was not allocated\n");
return 0;
}
DP(BNX2X_MSG_IOV, "num of vfs: %d\n", (bp)->vfdb->sriov.nr_virtfn);
/* let FLR complete ... */
msleep(100);
/* initialize vf database */
for_each_vf(bp, vfid) {
struct bnx2x_virtf *vf = BP_VF(bp, vfid);
int base_vf_cid = (BP_VFDB(bp)->sriov.first_vf_in_pf + vfid) *
BNX2X_CIDS_PER_VF;
union cdu_context *base_cxt = (union cdu_context *)
BP_VF_CXT_PAGE(bp, base_vf_cid/ILT_PAGE_CIDS)->addr +
(base_vf_cid & (ILT_PAGE_CIDS-1));
DP(BNX2X_MSG_IOV,
"VF[%d] Max IGU SBs: %d, base vf cid 0x%x, base cid 0x%x, base cxt %p\n",
vf->abs_vfid, vf_sb_count(vf), base_vf_cid,
BNX2X_FIRST_VF_CID + base_vf_cid, base_cxt);
/* init statically provisioned resources */
bnx2x_iov_static_resc(bp, vf);
/* queues are initialized during VF-ACQUIRE */
vf->filter_state = 0;
vf->sp_cl_id = bnx2x_fp(bp, 0, cl_id);
bnx2x_init_credit_pool(&vf->vf_vlans_pool, 0,
vf_vlan_rules_cnt(vf));
bnx2x_init_credit_pool(&vf->vf_macs_pool, 0,
vf_mac_rules_cnt(vf));
/* init mcast object - This object will be re-initialized
* during VF-ACQUIRE with the proper cl_id and cid.
* It needs to be initialized here so that it can be safely
* handled by a subsequent FLR flow.
*/
vf->mcast_list_len = 0;
bnx2x_init_mcast_obj(bp, &vf->mcast_obj, 0xFF,
0xFF, 0xFF, 0xFF,
bnx2x_vf_sp(bp, vf, mcast_rdata),
bnx2x_vf_sp_map(bp, vf, mcast_rdata),
BNX2X_FILTER_MCAST_PENDING,
&vf->filter_state,
BNX2X_OBJ_TYPE_RX_TX);
/* set the mailbox message addresses */
BP_VF_MBX(bp, vfid)->msg = (struct bnx2x_vf_mbx_msg *)
(((u8 *)BP_VF_MBX_DMA(bp)->addr) + vfid *
MBX_MSG_ALIGNED_SIZE);
BP_VF_MBX(bp, vfid)->msg_mapping = BP_VF_MBX_DMA(bp)->mapping +
vfid * MBX_MSG_ALIGNED_SIZE;
/* Enable vf mailbox */
bnx2x_vf_enable_mbx(bp, vf->abs_vfid);
}
/* Final VF init */
for_each_vf(bp, vfid) {
struct bnx2x_virtf *vf = BP_VF(bp, vfid);
/* fill in the BDF and bars */
vf->bus = bnx2x_vf_bus(bp, vfid);
vf->devfn = bnx2x_vf_devfn(bp, vfid);
bnx2x_vf_set_bars(bp, vf);
DP(BNX2X_MSG_IOV,
"VF info[%d]: bus 0x%x, devfn 0x%x, bar0 [0x%x, %d], bar1 [0x%x, %d], bar2 [0x%x, %d]\n",
vf->abs_vfid, vf->bus, vf->devfn,
(unsigned)vf->bars[0].bar, vf->bars[0].size,
(unsigned)vf->bars[1].bar, vf->bars[1].size,
(unsigned)vf->bars[2].bar, vf->bars[2].size);
}
return 0;
}
/* called by bnx2x_chip_cleanup */
int bnx2x_iov_chip_cleanup(struct bnx2x *bp)
{
int i;
if (!IS_SRIOV(bp))
return 0;
/* release all the VFs */
for_each_vf(bp, i)
bnx2x_vf_release(bp, BP_VF(bp, i));
return 0;
}
/* called by bnx2x_init_hw_func, returns the next ilt line */
int bnx2x_iov_init_ilt(struct bnx2x *bp, u16 line)
{
int i;
struct bnx2x_ilt *ilt = BP_ILT(bp);
if (!IS_SRIOV(bp))
return line;
/* set vfs ilt lines */
for (i = 0; i < BNX2X_VF_CIDS/ILT_PAGE_CIDS; i++) {
struct hw_dma *hw_cxt = BP_VF_CXT_PAGE(bp, i);
ilt->lines[line+i].page = hw_cxt->addr;
ilt->lines[line+i].page_mapping = hw_cxt->mapping;
ilt->lines[line+i].size = hw_cxt->size; /* doesn't matter */
}
return line + i;
}
static u8 bnx2x_iov_is_vf_cid(struct bnx2x *bp, u16 cid)
{
return ((cid >= BNX2X_FIRST_VF_CID) &&
((cid - BNX2X_FIRST_VF_CID) < BNX2X_VF_CIDS));
}
static
void bnx2x_vf_handle_classification_eqe(struct bnx2x *bp,
struct bnx2x_vf_queue *vfq,
union event_ring_elem *elem)
{
unsigned long ramrod_flags = 0;
int rc = 0;
u32 echo = le32_to_cpu(elem->message.data.eth_event.echo);
/* Always push next commands out, don't wait here */
set_bit(RAMROD_CONT, &ramrod_flags);
switch (echo >> BNX2X_SWCID_SHIFT) {
case BNX2X_FILTER_MAC_PENDING:
rc = vfq->mac_obj.complete(bp, &vfq->mac_obj, elem,
&ramrod_flags);
break;
case BNX2X_FILTER_VLAN_PENDING:
rc = vfq->vlan_obj.complete(bp, &vfq->vlan_obj, elem,
&ramrod_flags);
break;
default:
BNX2X_ERR("Unsupported classification command: 0x%x\n", echo);
return;
}
if (rc < 0)
BNX2X_ERR("Failed to schedule new commands: %d\n", rc);
else if (rc > 0)
DP(BNX2X_MSG_IOV, "Scheduled next pending commands...\n");
}
static
void bnx2x_vf_handle_mcast_eqe(struct bnx2x *bp,
struct bnx2x_virtf *vf)
{
struct bnx2x_mcast_ramrod_params rparam = {NULL};
int rc;
rparam.mcast_obj = &vf->mcast_obj;
vf->mcast_obj.raw.clear_pending(&vf->mcast_obj.raw);
/* If there are pending mcast commands - send them */
if (vf->mcast_obj.check_pending(&vf->mcast_obj)) {
rc = bnx2x_config_mcast(bp, &rparam, BNX2X_MCAST_CMD_CONT);
if (rc < 0)
BNX2X_ERR("Failed to send pending mcast commands: %d\n",
rc);
}
}
static
void bnx2x_vf_handle_filters_eqe(struct bnx2x *bp,
struct bnx2x_virtf *vf)
{
smp_mb__before_atomic();
clear_bit(BNX2X_FILTER_RX_MODE_PENDING, &vf->filter_state);
smp_mb__after_atomic();
}
static void bnx2x_vf_handle_rss_update_eqe(struct bnx2x *bp,
struct bnx2x_virtf *vf)
{
vf->rss_conf_obj.raw.clear_pending(&vf->rss_conf_obj.raw);
}
int bnx2x_iov_eq_sp_event(struct bnx2x *bp, union event_ring_elem *elem)
{
struct bnx2x_virtf *vf;
int qidx = 0, abs_vfid;
u8 opcode;
u16 cid = 0xffff;
if (!IS_SRIOV(bp))
return 1;
/* first get the cid - the only events we handle here are cfc-delete
* and set-mac completion
*/
opcode = elem->message.opcode;
switch (opcode) {
case EVENT_RING_OPCODE_CFC_DEL:
cid = SW_CID(elem->message.data.cfc_del_event.cid);
DP(BNX2X_MSG_IOV, "checking cfc-del comp cid=%d\n", cid);
break;
case EVENT_RING_OPCODE_CLASSIFICATION_RULES:
case EVENT_RING_OPCODE_MULTICAST_RULES:
case EVENT_RING_OPCODE_FILTERS_RULES:
case EVENT_RING_OPCODE_RSS_UPDATE_RULES:
cid = SW_CID(elem->message.data.eth_event.echo);
DP(BNX2X_MSG_IOV, "checking filtering comp cid=%d\n", cid);
break;
case EVENT_RING_OPCODE_VF_FLR:
abs_vfid = elem->message.data.vf_flr_event.vf_id;
DP(BNX2X_MSG_IOV, "Got VF FLR notification abs_vfid=%d\n",
abs_vfid);
goto get_vf;
case EVENT_RING_OPCODE_MALICIOUS_VF:
abs_vfid = elem->message.data.malicious_vf_event.vf_id;
BNX2X_ERR("Got VF MALICIOUS notification abs_vfid=%d err_id=0x%x\n",
abs_vfid,
elem->message.data.malicious_vf_event.err_id);
goto get_vf;
default:
return 1;
}
/* check if the cid is the VF range */
if (!bnx2x_iov_is_vf_cid(bp, cid)) {
DP(BNX2X_MSG_IOV, "cid is outside vf range: %d\n", cid);
return 1;
}
/* extract vf and rxq index from vf_cid - relies on the following:
* 1. vfid on cid reflects the true abs_vfid
* 2. The max number of VFs (per path) is 64
*/
qidx = cid & ((1 << BNX2X_VF_CID_WND)-1);
abs_vfid = (cid >> BNX2X_VF_CID_WND) & (BNX2X_MAX_NUM_OF_VFS-1);
get_vf:
vf = bnx2x_vf_by_abs_fid(bp, abs_vfid);
if (!vf) {
BNX2X_ERR("EQ completion for unknown VF, cid %d, abs_vfid %d\n",
cid, abs_vfid);
return 0;
}
switch (opcode) {
case EVENT_RING_OPCODE_CFC_DEL:
DP(BNX2X_MSG_IOV, "got VF [%d:%d] cfc delete ramrod\n",
vf->abs_vfid, qidx);
vfq_get(vf, qidx)->sp_obj.complete_cmd(bp,
&vfq_get(vf,
qidx)->sp_obj,
BNX2X_Q_CMD_CFC_DEL);
break;
case EVENT_RING_OPCODE_CLASSIFICATION_RULES:
DP(BNX2X_MSG_IOV, "got VF [%d:%d] set mac/vlan ramrod\n",
vf->abs_vfid, qidx);
bnx2x_vf_handle_classification_eqe(bp, vfq_get(vf, qidx), elem);
break;
case EVENT_RING_OPCODE_MULTICAST_RULES:
DP(BNX2X_MSG_IOV, "got VF [%d:%d] set mcast ramrod\n",
vf->abs_vfid, qidx);
bnx2x_vf_handle_mcast_eqe(bp, vf);
break;
case EVENT_RING_OPCODE_FILTERS_RULES:
DP(BNX2X_MSG_IOV, "got VF [%d:%d] set rx-mode ramrod\n",
vf->abs_vfid, qidx);
bnx2x_vf_handle_filters_eqe(bp, vf);
break;
case EVENT_RING_OPCODE_RSS_UPDATE_RULES:
DP(BNX2X_MSG_IOV, "got VF [%d:%d] RSS update ramrod\n",
vf->abs_vfid, qidx);
bnx2x_vf_handle_rss_update_eqe(bp, vf);
case EVENT_RING_OPCODE_VF_FLR:
case EVENT_RING_OPCODE_MALICIOUS_VF:
/* Do nothing for now */
return 0;
}
return 0;
}
static struct bnx2x_virtf *bnx2x_vf_by_cid(struct bnx2x *bp, int vf_cid)
{
/* extract the vf from vf_cid - relies on the following:
* 1. vfid on cid reflects the true abs_vfid
* 2. The max number of VFs (per path) is 64
*/
int abs_vfid = (vf_cid >> BNX2X_VF_CID_WND) & (BNX2X_MAX_NUM_OF_VFS-1);
return bnx2x_vf_by_abs_fid(bp, abs_vfid);
}
void bnx2x_iov_set_queue_sp_obj(struct bnx2x *bp, int vf_cid,
struct bnx2x_queue_sp_obj **q_obj)
{
struct bnx2x_virtf *vf;
if (!IS_SRIOV(bp))
return;
vf = bnx2x_vf_by_cid(bp, vf_cid);
if (vf) {
/* extract queue index from vf_cid - relies on the following:
* 1. vfid on cid reflects the true abs_vfid
* 2. The max number of VFs (per path) is 64
*/
int q_index = vf_cid & ((1 << BNX2X_VF_CID_WND)-1);
*q_obj = &bnx2x_vfq(vf, q_index, sp_obj);
} else {
BNX2X_ERR("No vf matching cid %d\n", vf_cid);
}
}
void bnx2x_iov_adjust_stats_req(struct bnx2x *bp)
{
int i;
int first_queue_query_index, num_queues_req;
dma_addr_t cur_data_offset;
struct stats_query_entry *cur_query_entry;
u8 stats_count = 0;
bool is_fcoe = false;
if (!IS_SRIOV(bp))
return;
if (!NO_FCOE(bp))
is_fcoe = true;
/* fcoe adds one global request and one queue request */
num_queues_req = BNX2X_NUM_ETH_QUEUES(bp) + is_fcoe;
first_queue_query_index = BNX2X_FIRST_QUEUE_QUERY_IDX -
(is_fcoe ? 0 : 1);
DP_AND((BNX2X_MSG_IOV | BNX2X_MSG_STATS),
"BNX2X_NUM_ETH_QUEUES %d, is_fcoe %d, first_queue_query_index %d => determined the last non virtual statistics query index is %d. Will add queries on top of that\n",
BNX2X_NUM_ETH_QUEUES(bp), is_fcoe, first_queue_query_index,
first_queue_query_index + num_queues_req);
cur_data_offset = bp->fw_stats_data_mapping +
offsetof(struct bnx2x_fw_stats_data, queue_stats) +
num_queues_req * sizeof(struct per_queue_stats);
cur_query_entry = &bp->fw_stats_req->
query[first_queue_query_index + num_queues_req];
for_each_vf(bp, i) {
int j;
struct bnx2x_virtf *vf = BP_VF(bp, i);
if (vf->state != VF_ENABLED) {
DP_AND((BNX2X_MSG_IOV | BNX2X_MSG_STATS),
"vf %d not enabled so no stats for it\n",
vf->abs_vfid);
continue;
}
DP(BNX2X_MSG_IOV, "add addresses for vf %d\n", vf->abs_vfid);
for_each_vfq(vf, j) {
struct bnx2x_vf_queue *rxq = vfq_get(vf, j);
dma_addr_t q_stats_addr =
vf->fw_stat_map + j * vf->stats_stride;
/* collect stats fro active queues only */
if (bnx2x_get_q_logical_state(bp, &rxq->sp_obj) ==
BNX2X_Q_LOGICAL_STATE_STOPPED)
continue;
/* create stats query entry for this queue */
cur_query_entry->kind = STATS_TYPE_QUEUE;
cur_query_entry->index = vfq_stat_id(vf, rxq);
cur_query_entry->funcID =
cpu_to_le16(FW_VF_HANDLE(vf->abs_vfid));
cur_query_entry->address.hi =
cpu_to_le32(U64_HI(q_stats_addr));
cur_query_entry->address.lo =
cpu_to_le32(U64_LO(q_stats_addr));
DP(BNX2X_MSG_IOV,
"added address %x %x for vf %d queue %d client %d\n",
cur_query_entry->address.hi,
cur_query_entry->address.lo, cur_query_entry->funcID,
j, cur_query_entry->index);
cur_query_entry++;
cur_data_offset += sizeof(struct per_queue_stats);
stats_count++;
/* all stats are coalesced to the leading queue */
if (vf->cfg_flags & VF_CFG_STATS_COALESCE)
break;
}
}
bp->fw_stats_req->hdr.cmd_num = bp->fw_stats_num + stats_count;
}
/* VF API helpers */
static void bnx2x_vf_qtbl_set_q(struct bnx2x *bp, u8 abs_vfid, u8 qid,
u8 enable)
{
u32 reg = PXP_REG_HST_ZONE_PERMISSION_TABLE + qid * 4;
u32 val = enable ? (abs_vfid | (1 << 6)) : 0;
REG_WR(bp, reg, val);
}
static void bnx2x_vf_clr_qtbl(struct bnx2x *bp, struct bnx2x_virtf *vf)
{
int i;
for_each_vfq(vf, i)
bnx2x_vf_qtbl_set_q(bp, vf->abs_vfid,
vfq_qzone_id(vf, vfq_get(vf, i)), false);
}
static void bnx2x_vf_igu_disable(struct bnx2x *bp, struct bnx2x_virtf *vf)
{
u32 val;
/* clear the VF configuration - pretend */
bnx2x_pretend_func(bp, HW_VF_HANDLE(bp, vf->abs_vfid));
val = REG_RD(bp, IGU_REG_VF_CONFIGURATION);
val &= ~(IGU_VF_CONF_MSI_MSIX_EN | IGU_VF_CONF_SINGLE_ISR_EN |
IGU_VF_CONF_FUNC_EN | IGU_VF_CONF_PARENT_MASK);
REG_WR(bp, IGU_REG_VF_CONFIGURATION, val);
bnx2x_pretend_func(bp, BP_ABS_FUNC(bp));
}
u8 bnx2x_vf_max_queue_cnt(struct bnx2x *bp, struct bnx2x_virtf *vf)
{
return min_t(u8, min_t(u8, vf_sb_count(vf), BNX2X_CIDS_PER_VF),
BNX2X_VF_MAX_QUEUES);
}
static
int bnx2x_vf_chk_avail_resc(struct bnx2x *bp, struct bnx2x_virtf *vf,
struct vf_pf_resc_request *req_resc)
{
u8 rxq_cnt = vf_rxq_count(vf) ? : bnx2x_vf_max_queue_cnt(bp, vf);
u8 txq_cnt = vf_txq_count(vf) ? : bnx2x_vf_max_queue_cnt(bp, vf);
return ((req_resc->num_rxqs <= rxq_cnt) &&
(req_resc->num_txqs <= txq_cnt) &&
(req_resc->num_sbs <= vf_sb_count(vf)) &&
(req_resc->num_mac_filters <= vf_mac_rules_cnt(vf)) &&
(req_resc->num_vlan_filters <= vf_vlan_rules_cnt(vf)));
}
/* CORE VF API */
int bnx2x_vf_acquire(struct bnx2x *bp, struct bnx2x_virtf *vf,
struct vf_pf_resc_request *resc)
{
int base_vf_cid = (BP_VFDB(bp)->sriov.first_vf_in_pf + vf->index) *
BNX2X_CIDS_PER_VF;
union cdu_context *base_cxt = (union cdu_context *)
BP_VF_CXT_PAGE(bp, base_vf_cid/ILT_PAGE_CIDS)->addr +
(base_vf_cid & (ILT_PAGE_CIDS-1));
int i;
/* if state is 'acquired' the VF was not released or FLR'd, in
* this case the returned resources match the acquired already
* acquired resources. Verify that the requested numbers do
* not exceed the already acquired numbers.
*/
if (vf->state == VF_ACQUIRED) {
DP(BNX2X_MSG_IOV, "VF[%d] Trying to re-acquire resources (VF was not released or FLR'd)\n",
vf->abs_vfid);
if (!bnx2x_vf_chk_avail_resc(bp, vf, resc)) {
BNX2X_ERR("VF[%d] When re-acquiring resources, requested numbers must be <= then previously acquired numbers\n",
vf->abs_vfid);
return -EINVAL;
}
return 0;
}
/* Otherwise vf state must be 'free' or 'reset' */
if (vf->state != VF_FREE && vf->state != VF_RESET) {
BNX2X_ERR("VF[%d] Can not acquire a VF with state %d\n",
vf->abs_vfid, vf->state);
return -EINVAL;
}
/* static allocation:
* the global maximum number are fixed per VF. Fail the request if
* requested number exceed these globals
*/
if (!bnx2x_vf_chk_avail_resc(bp, vf, resc)) {
DP(BNX2X_MSG_IOV,
"cannot fulfill vf resource request. Placing maximal available values in response\n");
/* set the max resource in the vf */
return -ENOMEM;
}
/* Set resources counters - 0 request means max available */
vf_sb_count(vf) = resc->num_sbs;
vf_rxq_count(vf) = resc->num_rxqs ? : bnx2x_vf_max_queue_cnt(bp, vf);
vf_txq_count(vf) = resc->num_txqs ? : bnx2x_vf_max_queue_cnt(bp, vf);
DP(BNX2X_MSG_IOV,
"Fulfilling vf request: sb count %d, tx_count %d, rx_count %d, mac_rules_count %d, vlan_rules_count %d\n",
vf_sb_count(vf), vf_rxq_count(vf),
vf_txq_count(vf), vf_mac_rules_cnt(vf),
vf_vlan_rules_cnt(vf));
/* Initialize the queues */
if (!vf->vfqs) {
DP(BNX2X_MSG_IOV, "vf->vfqs was not allocated\n");
return -EINVAL;
}
for_each_vfq(vf, i) {
struct bnx2x_vf_queue *q = vfq_get(vf, i);
if (!q) {
BNX2X_ERR("q number %d was not allocated\n", i);
return -EINVAL;
}
q->index = i;
q->cxt = &((base_cxt + i)->eth);
q->cid = BNX2X_FIRST_VF_CID + base_vf_cid + i;
DP(BNX2X_MSG_IOV, "VFQ[%d:%d]: index %d, cid 0x%x, cxt %p\n",
vf->abs_vfid, i, q->index, q->cid, q->cxt);
/* init SP objects */
bnx2x_vfq_init(bp, vf, q);
}
vf->state = VF_ACQUIRED;
return 0;
}
int bnx2x_vf_init(struct bnx2x *bp, struct bnx2x_virtf *vf, dma_addr_t *sb_map)
{
struct bnx2x_func_init_params func_init = {0};
int i;
/* the sb resources are initialized at this point, do the
* FW/HW initializations
*/
for_each_vf_sb(vf, i)
bnx2x_init_sb(bp, (dma_addr_t)sb_map[i], vf->abs_vfid, true,
vf_igu_sb(vf, i), vf_igu_sb(vf, i));
/* Sanity checks */
if (vf->state != VF_ACQUIRED) {
DP(BNX2X_MSG_IOV, "VF[%d] is not in VF_ACQUIRED, but %d\n",
vf->abs_vfid, vf->state);
return -EINVAL;
}
/* let FLR complete ... */
msleep(100);
/* FLR cleanup epilogue */
if (bnx2x_vf_flr_clnup_epilog(bp, vf->abs_vfid))
return -EBUSY;
/* reset IGU VF statistics: MSIX */
REG_WR(bp, IGU_REG_STATISTIC_NUM_MESSAGE_SENT + vf->abs_vfid * 4 , 0);
/* function setup */
func_init.pf_id = BP_FUNC(bp);
func_init.func_id = FW_VF_HANDLE(vf->abs_vfid);
bnx2x_func_init(bp, &func_init);
/* Enable the vf */
bnx2x_vf_enable_access(bp, vf->abs_vfid);
bnx2x_vf_enable_traffic(bp, vf);
/* queue protection table */
for_each_vfq(vf, i)
bnx2x_vf_qtbl_set_q(bp, vf->abs_vfid,
vfq_qzone_id(vf, vfq_get(vf, i)), true);
vf->state = VF_ENABLED;
/* update vf bulletin board */
bnx2x_post_vf_bulletin(bp, vf->index);
return 0;
}
struct set_vf_state_cookie {
struct bnx2x_virtf *vf;
u8 state;
};
static void bnx2x_set_vf_state(void *cookie)
{
struct set_vf_state_cookie *p = (struct set_vf_state_cookie *)cookie;
p->vf->state = p->state;
}
int bnx2x_vf_close(struct bnx2x *bp, struct bnx2x_virtf *vf)
{
int rc = 0, i;
DP(BNX2X_MSG_IOV, "vf[%d]\n", vf->abs_vfid);
/* Close all queues */
for (i = 0; i < vf_rxq_count(vf); i++) {
rc = bnx2x_vf_queue_teardown(bp, vf, i);
if (rc)
goto op_err;
}
/* disable the interrupts */
DP(BNX2X_MSG_IOV, "disabling igu\n");
bnx2x_vf_igu_disable(bp, vf);
/* disable the VF */
DP(BNX2X_MSG_IOV, "clearing qtbl\n");
bnx2x_vf_clr_qtbl(bp, vf);
/* need to make sure there are no outstanding stats ramrods which may
* cause the device to access the VF's stats buffer which it will free
* as soon as we return from the close flow.
*/
{
struct set_vf_state_cookie cookie;
cookie.vf = vf;
cookie.state = VF_ACQUIRED;
rc = bnx2x_stats_safe_exec(bp, bnx2x_set_vf_state, &cookie);
if (rc)
goto op_err;
}
DP(BNX2X_MSG_IOV, "set state to acquired\n");
return 0;
op_err:
BNX2X_ERR("vf[%d] CLOSE error: rc %d\n", vf->abs_vfid, rc);
return rc;
}
/* VF release can be called either: 1. The VF was acquired but
* not enabled 2. the vf was enabled or in the process of being
* enabled
*/
int bnx2x_vf_free(struct bnx2x *bp, struct bnx2x_virtf *vf)
{
int rc;
DP(BNX2X_MSG_IOV, "VF[%d] STATE: %s\n", vf->abs_vfid,
vf->state == VF_FREE ? "Free" :
vf->state == VF_ACQUIRED ? "Acquired" :
vf->state == VF_ENABLED ? "Enabled" :
vf->state == VF_RESET ? "Reset" :
"Unknown");
switch (vf->state) {
case VF_ENABLED:
rc = bnx2x_vf_close(bp, vf);
if (rc)
goto op_err;
/* Fallthrough to release resources */
case VF_ACQUIRED:
DP(BNX2X_MSG_IOV, "about to free resources\n");
bnx2x_vf_free_resc(bp, vf);
break;
case VF_FREE:
case VF_RESET:
default:
break;
}
return 0;
op_err:
BNX2X_ERR("VF[%d] RELEASE error: rc %d\n", vf->abs_vfid, rc);
return rc;
}
int bnx2x_vf_rss_update(struct bnx2x *bp, struct bnx2x_virtf *vf,
struct bnx2x_config_rss_params *rss)
{
DP(BNX2X_MSG_IOV, "vf[%d]\n", vf->abs_vfid);
set_bit(RAMROD_COMP_WAIT, &rss->ramrod_flags);
return bnx2x_config_rss(bp, rss);
}
int bnx2x_vf_tpa_update(struct bnx2x *bp, struct bnx2x_virtf *vf,
struct vfpf_tpa_tlv *tlv,
struct bnx2x_queue_update_tpa_params *params)
{
aligned_u64 *sge_addr = tlv->tpa_client_info.sge_addr;
struct bnx2x_queue_state_params qstate;
int qid, rc = 0;
DP(BNX2X_MSG_IOV, "vf[%d]\n", vf->abs_vfid);
/* Set ramrod params */
memset(&qstate, 0, sizeof(struct bnx2x_queue_state_params));
memcpy(&qstate.params.update_tpa, params,
sizeof(struct bnx2x_queue_update_tpa_params));
qstate.cmd = BNX2X_Q_CMD_UPDATE_TPA;
set_bit(RAMROD_COMP_WAIT, &qstate.ramrod_flags);
for (qid = 0; qid < vf_rxq_count(vf); qid++) {
qstate.q_obj = &bnx2x_vfq(vf, qid, sp_obj);
qstate.params.update_tpa.sge_map = sge_addr[qid];
DP(BNX2X_MSG_IOV, "sge_addr[%d:%d] %08x:%08x\n",
vf->abs_vfid, qid, U64_HI(sge_addr[qid]),
U64_LO(sge_addr[qid]));
rc = bnx2x_queue_state_change(bp, &qstate);
if (rc) {
BNX2X_ERR("Failed to configure sge_addr %08x:%08x for [%d:%d]\n",
U64_HI(sge_addr[qid]), U64_LO(sge_addr[qid]),
vf->abs_vfid, qid);
return rc;
}
}
return rc;
}
/* VF release ~ VF close + VF release-resources
* Release is the ultimate SW shutdown and is called whenever an
* irrecoverable error is encountered.
*/
int bnx2x_vf_release(struct bnx2x *bp, struct bnx2x_virtf *vf)
{
int rc;
DP(BNX2X_MSG_IOV, "PF releasing vf %d\n", vf->abs_vfid);
bnx2x_lock_vf_pf_channel(bp, vf, CHANNEL_TLV_PF_RELEASE_VF);
rc = bnx2x_vf_free(bp, vf);
if (rc)
WARN(rc,
"VF[%d] Failed to allocate resources for release op- rc=%d\n",
vf->abs_vfid, rc);
bnx2x_unlock_vf_pf_channel(bp, vf, CHANNEL_TLV_PF_RELEASE_VF);
return rc;
}
void bnx2x_lock_vf_pf_channel(struct bnx2x *bp, struct bnx2x_virtf *vf,
enum channel_tlvs tlv)
{
/* we don't lock the channel for unsupported tlvs */
if (!bnx2x_tlv_supported(tlv)) {
BNX2X_ERR("attempting to lock with unsupported tlv. Aborting\n");
return;
}
/* lock the channel */
mutex_lock(&vf->op_mutex);
/* record the locking op */
vf->op_current = tlv;
/* log the lock */
DP(BNX2X_MSG_IOV, "VF[%d]: vf pf channel locked by %d\n",
vf->abs_vfid, tlv);
}
void bnx2x_unlock_vf_pf_channel(struct bnx2x *bp, struct bnx2x_virtf *vf,
enum channel_tlvs expected_tlv)
{
enum channel_tlvs current_tlv;
if (!vf) {
BNX2X_ERR("VF was %p\n", vf);
return;
}
current_tlv = vf->op_current;
/* we don't unlock the channel for unsupported tlvs */
if (!bnx2x_tlv_supported(expected_tlv))
return;
WARN(expected_tlv != vf->op_current,
"lock mismatch: expected %d found %d", expected_tlv,
vf->op_current);
/* record the locking op */
vf->op_current = CHANNEL_TLV_NONE;
/* lock the channel */
mutex_unlock(&vf->op_mutex);
/* log the unlock */
DP(BNX2X_MSG_IOV, "VF[%d]: vf pf channel unlocked by %d\n",
vf->abs_vfid, current_tlv);
}
static int bnx2x_set_pf_tx_switching(struct bnx2x *bp, bool enable)
{
struct bnx2x_queue_state_params q_params;
u32 prev_flags;
int i, rc;
/* Verify changes are needed and record current Tx switching state */
prev_flags = bp->flags;
if (enable)
bp->flags |= TX_SWITCHING;
else
bp->flags &= ~TX_SWITCHING;
if (prev_flags == bp->flags)
return 0;
/* Verify state enables the sending of queue ramrods */
if ((bp->state != BNX2X_STATE_OPEN) ||
(bnx2x_get_q_logical_state(bp,
&bnx2x_sp_obj(bp, &bp->fp[0]).q_obj) !=
BNX2X_Q_LOGICAL_STATE_ACTIVE))
return 0;
/* send q. update ramrod to configure Tx switching */
memset(&q_params, 0, sizeof(q_params));
__set_bit(RAMROD_COMP_WAIT, &q_params.ramrod_flags);
q_params.cmd = BNX2X_Q_CMD_UPDATE;
__set_bit(BNX2X_Q_UPDATE_TX_SWITCHING_CHNG,
&q_params.params.update.update_flags);
if (enable)
__set_bit(BNX2X_Q_UPDATE_TX_SWITCHING,
&q_params.params.update.update_flags);
else
__clear_bit(BNX2X_Q_UPDATE_TX_SWITCHING,
&q_params.params.update.update_flags);
/* send the ramrod on all the queues of the PF */
for_each_eth_queue(bp, i) {
struct bnx2x_fastpath *fp = &bp->fp[i];
/* Set the appropriate Queue object */
q_params.q_obj = &bnx2x_sp_obj(bp, fp).q_obj;
/* Update the Queue state */
rc = bnx2x_queue_state_change(bp, &q_params);
if (rc) {
BNX2X_ERR("Failed to configure Tx switching\n");
return rc;
}
}
DP(BNX2X_MSG_IOV, "%s Tx Switching\n", enable ? "Enabled" : "Disabled");
return 0;
}
int bnx2x_sriov_configure(struct pci_dev *dev, int num_vfs_param)
{
struct bnx2x *bp = netdev_priv(pci_get_drvdata(dev));
if (!IS_SRIOV(bp)) {
BNX2X_ERR("failed to configure SR-IOV since vfdb was not allocated. Check dmesg for errors in probe stage\n");
return -EINVAL;
}
DP(BNX2X_MSG_IOV, "bnx2x_sriov_configure called with %d, BNX2X_NR_VIRTFN(bp) was %d\n",
num_vfs_param, BNX2X_NR_VIRTFN(bp));
/* HW channel is only operational when PF is up */
if (bp->state != BNX2X_STATE_OPEN) {
BNX2X_ERR("VF num configuration via sysfs not supported while PF is down\n");
return -EINVAL;
}
/* we are always bound by the total_vfs in the configuration space */
if (num_vfs_param > BNX2X_NR_VIRTFN(bp)) {
BNX2X_ERR("truncating requested number of VFs (%d) down to maximum allowed (%d)\n",
num_vfs_param, BNX2X_NR_VIRTFN(bp));
num_vfs_param = BNX2X_NR_VIRTFN(bp);
}
bp->requested_nr_virtfn = num_vfs_param;
if (num_vfs_param == 0) {
bnx2x_set_pf_tx_switching(bp, false);
bnx2x_disable_sriov(bp);
return 0;
} else {
return bnx2x_enable_sriov(bp);
}
}
#define IGU_ENTRY_SIZE 4
int bnx2x_enable_sriov(struct bnx2x *bp)
{
int rc = 0, req_vfs = bp->requested_nr_virtfn;
int vf_idx, sb_idx, vfq_idx, qcount, first_vf;
u32 igu_entry, address;
u16 num_vf_queues;
if (req_vfs == 0)
return 0;
first_vf = bp->vfdb->sriov.first_vf_in_pf;
/* statically distribute vf sb pool between VFs */
num_vf_queues = min_t(u16, BNX2X_VF_MAX_QUEUES,
BP_VFDB(bp)->vf_sbs_pool / req_vfs);
/* zero previous values learned from igu cam */
for (vf_idx = 0; vf_idx < req_vfs; vf_idx++) {
struct bnx2x_virtf *vf = BP_VF(bp, vf_idx);
vf->sb_count = 0;
vf_sb_count(BP_VF(bp, vf_idx)) = 0;
}
bp->vfdb->vf_sbs_pool = 0;
/* prepare IGU cam */
sb_idx = BP_VFDB(bp)->first_vf_igu_entry;
address = IGU_REG_MAPPING_MEMORY + sb_idx * IGU_ENTRY_SIZE;
for (vf_idx = first_vf; vf_idx < first_vf + req_vfs; vf_idx++) {
for (vfq_idx = 0; vfq_idx < num_vf_queues; vfq_idx++) {
igu_entry = vf_idx << IGU_REG_MAPPING_MEMORY_FID_SHIFT |
vfq_idx << IGU_REG_MAPPING_MEMORY_VECTOR_SHIFT |
IGU_REG_MAPPING_MEMORY_VALID;
DP(BNX2X_MSG_IOV, "assigning sb %d to vf %d\n",
sb_idx, vf_idx);
REG_WR(bp, address, igu_entry);
sb_idx++;
address += IGU_ENTRY_SIZE;
}
}
/* Reinitialize vf database according to igu cam */
bnx2x_get_vf_igu_cam_info(bp);
DP(BNX2X_MSG_IOV, "vf_sbs_pool %d, num_vf_queues %d\n",
BP_VFDB(bp)->vf_sbs_pool, num_vf_queues);
qcount = 0;
for_each_vf(bp, vf_idx) {
struct bnx2x_virtf *vf = BP_VF(bp, vf_idx);
/* set local queue arrays */
vf->vfqs = &bp->vfdb->vfqs[qcount];
qcount += vf_sb_count(vf);
bnx2x_iov_static_resc(bp, vf);
}
/* prepare msix vectors in VF configuration space - the value in the
* PCI configuration space should be the index of the last entry,
* namely one less than the actual size of the table
*/
for (vf_idx = first_vf; vf_idx < first_vf + req_vfs; vf_idx++) {
bnx2x_pretend_func(bp, HW_VF_HANDLE(bp, vf_idx));
REG_WR(bp, PCICFG_OFFSET + GRC_CONFIG_REG_VF_MSIX_CONTROL,
num_vf_queues - 1);
DP(BNX2X_MSG_IOV, "set msix vec num in VF %d cfg space to %d\n",
vf_idx, num_vf_queues - 1);
}
bnx2x_pretend_func(bp, BP_ABS_FUNC(bp));
/* enable sriov. This will probe all the VFs, and consequentially cause
* the "acquire" messages to appear on the VF PF channel.
*/
DP(BNX2X_MSG_IOV, "about to call enable sriov\n");
bnx2x_disable_sriov(bp);
rc = bnx2x_set_pf_tx_switching(bp, true);
if (rc)
return rc;
rc = pci_enable_sriov(bp->pdev, req_vfs);
if (rc) {
BNX2X_ERR("pci_enable_sriov failed with %d\n", rc);
return rc;
}
DP(BNX2X_MSG_IOV, "sriov enabled (%d vfs)\n", req_vfs);
return req_vfs;
}
void bnx2x_pf_set_vfs_vlan(struct bnx2x *bp)
{
int vfidx;
struct pf_vf_bulletin_content *bulletin;
DP(BNX2X_MSG_IOV, "configuring vlan for VFs from sp-task\n");
for_each_vf(bp, vfidx) {
bulletin = BP_VF_BULLETIN(bp, vfidx);
if (bulletin->valid_bitmap & (1 << VLAN_VALID))
bnx2x_set_vf_vlan(bp->dev, vfidx, bulletin->vlan, 0);
}
}
void bnx2x_disable_sriov(struct bnx2x *bp)
{
if (pci_vfs_assigned(bp->pdev)) {
DP(BNX2X_MSG_IOV,
"Unloading driver while VFs are assigned - VFs will not be deallocated\n");
return;
}
pci_disable_sriov(bp->pdev);
}
static int bnx2x_vf_op_prep(struct bnx2x *bp, int vfidx,
struct bnx2x_virtf **vf,
struct pf_vf_bulletin_content **bulletin,
bool test_queue)
{
if (bp->state != BNX2X_STATE_OPEN) {
BNX2X_ERR("PF is down - can't utilize iov-related functionality\n");
return -EINVAL;
}
if (!IS_SRIOV(bp)) {
BNX2X_ERR("sriov is disabled - can't utilize iov-related functionality\n");
return -EINVAL;
}
if (vfidx >= BNX2X_NR_VIRTFN(bp)) {
BNX2X_ERR("VF is uninitialized - can't utilize iov-related functionality. vfidx was %d BNX2X_NR_VIRTFN was %d\n",
vfidx, BNX2X_NR_VIRTFN(bp));
return -EINVAL;
}
/* init members */
*vf = BP_VF(bp, vfidx);
*bulletin = BP_VF_BULLETIN(bp, vfidx);
if (!*vf) {
BNX2X_ERR("Unable to get VF structure for vfidx %d\n", vfidx);
return -EINVAL;
}
if (test_queue && !(*vf)->vfqs) {
BNX2X_ERR("vfqs struct is null. Was this invoked before dynamically enabling SR-IOV? vfidx was %d\n",
vfidx);
return -EINVAL;
}
if (!*bulletin) {
BNX2X_ERR("Bulletin Board struct is null for vfidx %d\n",
vfidx);
return -EINVAL;
}
return 0;
}
int bnx2x_get_vf_config(struct net_device *dev, int vfidx,
struct ifla_vf_info *ivi)
{
struct bnx2x *bp = netdev_priv(dev);
struct bnx2x_virtf *vf = NULL;
struct pf_vf_bulletin_content *bulletin = NULL;
struct bnx2x_vlan_mac_obj *mac_obj;
struct bnx2x_vlan_mac_obj *vlan_obj;
int rc;
/* sanity and init */
rc = bnx2x_vf_op_prep(bp, vfidx, &vf, &bulletin, true);
if (rc)
return rc;
mac_obj = &bnx2x_leading_vfq(vf, mac_obj);
vlan_obj = &bnx2x_leading_vfq(vf, vlan_obj);
if (!mac_obj || !vlan_obj) {
BNX2X_ERR("VF partially initialized\n");
return -EINVAL;
}
ivi->vf = vfidx;
ivi->qos = 0;
ivi->max_tx_rate = 10000; /* always 10G. TBA take from link struct */
ivi->min_tx_rate = 0;
ivi->spoofchk = 1; /*always enabled */
if (vf->state == VF_ENABLED) {
/* mac and vlan are in vlan_mac objects */
if (bnx2x_validate_vf_sp_objs(bp, vf, false)) {
mac_obj->get_n_elements(bp, mac_obj, 1, (u8 *)&ivi->mac,
0, ETH_ALEN);
vlan_obj->get_n_elements(bp, vlan_obj, 1,
(u8 *)&ivi->vlan, 0,
VLAN_HLEN);
}
} else {
mutex_lock(&bp->vfdb->bulletin_mutex);
/* mac */
if (bulletin->valid_bitmap & (1 << MAC_ADDR_VALID))
/* mac configured by ndo so its in bulletin board */
memcpy(&ivi->mac, bulletin->mac, ETH_ALEN);
else
/* function has not been loaded yet. Show mac as 0s */
eth_zero_addr(ivi->mac);
/* vlan */
if (bulletin->valid_bitmap & (1 << VLAN_VALID))
/* vlan configured by ndo so its in bulletin board */
memcpy(&ivi->vlan, &bulletin->vlan, VLAN_HLEN);
else
/* function has not been loaded yet. Show vlans as 0s */
memset(&ivi->vlan, 0, VLAN_HLEN);
mutex_unlock(&bp->vfdb->bulletin_mutex);
}
return 0;
}
/* New mac for VF. Consider these cases:
* 1. VF hasn't been acquired yet - save the mac in local bulletin board and
* supply at acquire.
* 2. VF has already been acquired but has not yet initialized - store in local
* bulletin board. mac will be posted on VF bulletin board after VF init. VF
* will configure this mac when it is ready.
* 3. VF has already initialized but has not yet setup a queue - post the new
* mac on VF's bulletin board right now. VF will configure this mac when it
* is ready.
* 4. VF has already set a queue - delete any macs already configured for this
* queue and manually config the new mac.
* In any event, once this function has been called refuse any attempts by the
* VF to configure any mac for itself except for this mac. In case of a race
* where the VF fails to see the new post on its bulletin board before sending a
* mac configuration request, the PF will simply fail the request and VF can try
* again after consulting its bulletin board.
*/
int bnx2x_set_vf_mac(struct net_device *dev, int vfidx, u8 *mac)
{
struct bnx2x *bp = netdev_priv(dev);
int rc, q_logical_state;
struct bnx2x_virtf *vf = NULL;
struct pf_vf_bulletin_content *bulletin = NULL;
if (!is_valid_ether_addr(mac)) {
BNX2X_ERR("mac address invalid\n");
return -EINVAL;
}
/* sanity and init */
rc = bnx2x_vf_op_prep(bp, vfidx, &vf, &bulletin, true);
if (rc)
return rc;
mutex_lock(&bp->vfdb->bulletin_mutex);
/* update PF's copy of the VF's bulletin. Will no longer accept mac
* configuration requests from vf unless match this mac
*/
bulletin->valid_bitmap |= 1 << MAC_ADDR_VALID;
memcpy(bulletin->mac, mac, ETH_ALEN);
/* Post update on VF's bulletin board */
rc = bnx2x_post_vf_bulletin(bp, vfidx);
/* release lock before checking return code */
mutex_unlock(&bp->vfdb->bulletin_mutex);
if (rc) {
BNX2X_ERR("failed to update VF[%d] bulletin\n", vfidx);
return rc;
}
q_logical_state =
bnx2x_get_q_logical_state(bp, &bnx2x_leading_vfq(vf, sp_obj));
if (vf->state == VF_ENABLED &&
q_logical_state == BNX2X_Q_LOGICAL_STATE_ACTIVE) {
/* configure the mac in device on this vf's queue */
unsigned long ramrod_flags = 0;
struct bnx2x_vlan_mac_obj *mac_obj;
/* User should be able to see failure reason in system logs */
if (!bnx2x_validate_vf_sp_objs(bp, vf, true))
return -EINVAL;
/* must lock vfpf channel to protect against vf flows */
bnx2x_lock_vf_pf_channel(bp, vf, CHANNEL_TLV_PF_SET_MAC);
/* remove existing eth macs */
mac_obj = &bnx2x_leading_vfq(vf, mac_obj);
rc = bnx2x_del_all_macs(bp, mac_obj, BNX2X_ETH_MAC, true);
if (rc) {
BNX2X_ERR("failed to delete eth macs\n");
rc = -EINVAL;
goto out;
}
/* remove existing uc list macs */
rc = bnx2x_del_all_macs(bp, mac_obj, BNX2X_UC_LIST_MAC, true);
if (rc) {
BNX2X_ERR("failed to delete uc_list macs\n");
rc = -EINVAL;
goto out;
}
/* configure the new mac to device */
__set_bit(RAMROD_COMP_WAIT, &ramrod_flags);
bnx2x_set_mac_one(bp, (u8 *)&bulletin->mac, mac_obj, true,
BNX2X_ETH_MAC, &ramrod_flags);
out:
bnx2x_unlock_vf_pf_channel(bp, vf, CHANNEL_TLV_PF_SET_MAC);
}
return rc;
}
static void bnx2x_set_vf_vlan_acceptance(struct bnx2x *bp,
struct bnx2x_virtf *vf, bool accept)
{
struct bnx2x_rx_mode_ramrod_params rx_ramrod;
unsigned long accept_flags;
/* need to remove/add the VF's accept_any_vlan bit */
accept_flags = bnx2x_leading_vfq(vf, accept_flags);
if (accept)
set_bit(BNX2X_ACCEPT_ANY_VLAN, &accept_flags);
else
clear_bit(BNX2X_ACCEPT_ANY_VLAN, &accept_flags);
bnx2x_vf_prep_rx_mode(bp, LEADING_IDX, &rx_ramrod, vf,
accept_flags);
bnx2x_leading_vfq(vf, accept_flags) = accept_flags;
bnx2x_config_rx_mode(bp, &rx_ramrod);
}
static int bnx2x_set_vf_vlan_filter(struct bnx2x *bp, struct bnx2x_virtf *vf,
u16 vlan, bool add)
{
struct bnx2x_vlan_mac_ramrod_params ramrod_param;
unsigned long ramrod_flags = 0;
int rc = 0;
/* configure the new vlan to device */
memset(&ramrod_param, 0, sizeof(ramrod_param));
__set_bit(RAMROD_COMP_WAIT, &ramrod_flags);
ramrod_param.vlan_mac_obj = &bnx2x_leading_vfq(vf, vlan_obj);
ramrod_param.ramrod_flags = ramrod_flags;
ramrod_param.user_req.u.vlan.vlan = vlan;
ramrod_param.user_req.cmd = add ? BNX2X_VLAN_MAC_ADD
: BNX2X_VLAN_MAC_DEL;
rc = bnx2x_config_vlan_mac(bp, &ramrod_param);
if (rc) {
BNX2X_ERR("failed to configure vlan\n");
return -EINVAL;
}
return 0;
}
int bnx2x_set_vf_vlan(struct net_device *dev, int vfidx, u16 vlan, u8 qos)
{
struct pf_vf_bulletin_content *bulletin = NULL;
struct bnx2x *bp = netdev_priv(dev);
struct bnx2x_vlan_mac_obj *vlan_obj;
unsigned long vlan_mac_flags = 0;
unsigned long ramrod_flags = 0;
struct bnx2x_virtf *vf = NULL;
int i, rc;
if (vlan > 4095) {
BNX2X_ERR("illegal vlan value %d\n", vlan);
return -EINVAL;
}
DP(BNX2X_MSG_IOV, "configuring VF %d with VLAN %d qos %d\n",
vfidx, vlan, 0);
/* sanity and init */
rc = bnx2x_vf_op_prep(bp, vfidx, &vf, &bulletin, true);
if (rc)
return rc;
/* update PF's copy of the VF's bulletin. No point in posting the vlan
* to the VF since it doesn't have anything to do with it. But it useful
* to store it here in case the VF is not up yet and we can only
* configure the vlan later when it does. Treat vlan id 0 as remove the
* Host tag.
*/
mutex_lock(&bp->vfdb->bulletin_mutex);
if (vlan > 0)
bulletin->valid_bitmap |= 1 << VLAN_VALID;
else
bulletin->valid_bitmap &= ~(1 << VLAN_VALID);
bulletin->vlan = vlan;
/* Post update on VF's bulletin board */
rc = bnx2x_post_vf_bulletin(bp, vfidx);
if (rc)
BNX2X_ERR("failed to update VF[%d] bulletin\n", vfidx);
mutex_unlock(&bp->vfdb->bulletin_mutex);
/* is vf initialized and queue set up? */
if (vf->state != VF_ENABLED ||
bnx2x_get_q_logical_state(bp, &bnx2x_leading_vfq(vf, sp_obj)) !=
BNX2X_Q_LOGICAL_STATE_ACTIVE)
return rc;
/* User should be able to see error in system logs */
if (!bnx2x_validate_vf_sp_objs(bp, vf, true))
return -EINVAL;
/* must lock vfpf channel to protect against vf flows */
bnx2x_lock_vf_pf_channel(bp, vf, CHANNEL_TLV_PF_SET_VLAN);
/* remove existing vlans */
__set_bit(RAMROD_COMP_WAIT, &ramrod_flags);
vlan_obj = &bnx2x_leading_vfq(vf, vlan_obj);
rc = vlan_obj->delete_all(bp, vlan_obj, &vlan_mac_flags,
&ramrod_flags);
if (rc) {
BNX2X_ERR("failed to delete vlans\n");
rc = -EINVAL;
goto out;
}
/* clear accept_any_vlan when HV forces vlan, otherwise
* according to VF capabilities
*/
if (vlan || !(vf->cfg_flags & VF_CFG_VLAN_FILTER))
bnx2x_set_vf_vlan_acceptance(bp, vf, !vlan);
rc = bnx2x_set_vf_vlan_filter(bp, vf, vlan, true);
if (rc)
goto out;
/* send queue update ramrods to configure default vlan and
* silent vlan removal
*/
for_each_vfq(vf, i) {
struct bnx2x_queue_state_params q_params = {NULL};
struct bnx2x_queue_update_params *update_params;
q_params.q_obj = &bnx2x_vfq(vf, i, sp_obj);
/* validate the Q is UP */
if (bnx2x_get_q_logical_state(bp, q_params.q_obj) !=
BNX2X_Q_LOGICAL_STATE_ACTIVE)
continue;
__set_bit(RAMROD_COMP_WAIT, &q_params.ramrod_flags);
q_params.cmd = BNX2X_Q_CMD_UPDATE;
update_params = &q_params.params.update;
__set_bit(BNX2X_Q_UPDATE_DEF_VLAN_EN_CHNG,
&update_params->update_flags);
__set_bit(BNX2X_Q_UPDATE_SILENT_VLAN_REM_CHNG,
&update_params->update_flags);
if (vlan == 0) {
/* if vlan is 0 then we want to leave the VF traffic
* untagged, and leave the incoming traffic untouched
* (i.e. do not remove any vlan tags).
*/
__clear_bit(BNX2X_Q_UPDATE_DEF_VLAN_EN,
&update_params->update_flags);
__clear_bit(BNX2X_Q_UPDATE_SILENT_VLAN_REM,
&update_params->update_flags);
} else {
/* configure default vlan to vf queue and set silent
* vlan removal (the vf remains unaware of this vlan).
*/
__set_bit(BNX2X_Q_UPDATE_DEF_VLAN_EN,
&update_params->update_flags);
__set_bit(BNX2X_Q_UPDATE_SILENT_VLAN_REM,
&update_params->update_flags);
update_params->def_vlan = vlan;
update_params->silent_removal_value =
vlan & VLAN_VID_MASK;
update_params->silent_removal_mask = VLAN_VID_MASK;
}
/* Update the Queue state */
rc = bnx2x_queue_state_change(bp, &q_params);
if (rc) {
BNX2X_ERR("Failed to configure default VLAN queue %d\n",
i);
goto out;
}
}
out:
bnx2x_unlock_vf_pf_channel(bp, vf, CHANNEL_TLV_PF_SET_VLAN);
if (rc)
DP(BNX2X_MSG_IOV,
"updated VF[%d] vlan configuration (vlan = %d)\n",
vfidx, vlan);
return rc;
}
/* crc is the first field in the bulletin board. Compute the crc over the
* entire bulletin board excluding the crc field itself. Use the length field
* as the Bulletin Board was posted by a PF with possibly a different version
* from the vf which will sample it. Therefore, the length is computed by the
* PF and then used blindly by the VF.
*/
u32 bnx2x_crc_vf_bulletin(struct pf_vf_bulletin_content *bulletin)
{
return crc32(BULLETIN_CRC_SEED,
((u8 *)bulletin) + sizeof(bulletin->crc),
bulletin->length - sizeof(bulletin->crc));
}
/* Check for new posts on the bulletin board */
enum sample_bulletin_result bnx2x_sample_bulletin(struct bnx2x *bp)
{
struct pf_vf_bulletin_content *bulletin;
int attempts;
/* sampling structure in mid post may result with corrupted data
* validate crc to ensure coherency.
*/
for (attempts = 0; attempts < BULLETIN_ATTEMPTS; attempts++) {
u32 crc;
/* sample the bulletin board */
memcpy(&bp->shadow_bulletin, bp->pf2vf_bulletin,
sizeof(union pf_vf_bulletin));
crc = bnx2x_crc_vf_bulletin(&bp->shadow_bulletin.content);
if (bp->shadow_bulletin.content.crc == crc)
break;
BNX2X_ERR("bad crc on bulletin board. Contained %x computed %x\n",
bp->shadow_bulletin.content.crc, crc);
}
if (attempts >= BULLETIN_ATTEMPTS) {
BNX2X_ERR("pf to vf bulletin board crc was wrong %d consecutive times. Aborting\n",
attempts);
return PFVF_BULLETIN_CRC_ERR;
}
bulletin = &bp->shadow_bulletin.content;
/* bulletin board hasn't changed since last sample */
if (bp->old_bulletin.version == bulletin->version)
return PFVF_BULLETIN_UNCHANGED;
/* the mac address in bulletin board is valid and is new */
if (bulletin->valid_bitmap & 1 << MAC_ADDR_VALID &&
!ether_addr_equal(bulletin->mac, bp->old_bulletin.mac)) {
/* update new mac to net device */
memcpy(bp->dev->dev_addr, bulletin->mac, ETH_ALEN);
}
if (bulletin->valid_bitmap & (1 << LINK_VALID)) {
DP(BNX2X_MSG_IOV, "link update speed %d flags %x\n",
bulletin->link_speed, bulletin->link_flags);
bp->vf_link_vars.line_speed = bulletin->link_speed;
bp->vf_link_vars.link_report_flags = 0;
/* Link is down */
if (bulletin->link_flags & VFPF_LINK_REPORT_LINK_DOWN)
__set_bit(BNX2X_LINK_REPORT_LINK_DOWN,
&bp->vf_link_vars.link_report_flags);
/* Full DUPLEX */
if (bulletin->link_flags & VFPF_LINK_REPORT_FULL_DUPLEX)
__set_bit(BNX2X_LINK_REPORT_FD,
&bp->vf_link_vars.link_report_flags);
/* Rx Flow Control is ON */
if (bulletin->link_flags & VFPF_LINK_REPORT_RX_FC_ON)
__set_bit(BNX2X_LINK_REPORT_RX_FC_ON,
&bp->vf_link_vars.link_report_flags);
/* Tx Flow Control is ON */
if (bulletin->link_flags & VFPF_LINK_REPORT_TX_FC_ON)
__set_bit(BNX2X_LINK_REPORT_TX_FC_ON,
&bp->vf_link_vars.link_report_flags);
__bnx2x_link_report(bp);
}
/* copy new bulletin board to bp */
memcpy(&bp->old_bulletin, bulletin,
sizeof(struct pf_vf_bulletin_content));
return PFVF_BULLETIN_UPDATED;
}
void bnx2x_timer_sriov(struct bnx2x *bp)
{
bnx2x_sample_bulletin(bp);
/* if channel is down we need to self destruct */
if (bp->old_bulletin.valid_bitmap & 1 << CHANNEL_DOWN)
bnx2x_schedule_sp_rtnl(bp, BNX2X_SP_RTNL_VFPF_CHANNEL_DOWN,
BNX2X_MSG_IOV);
}
void __iomem *bnx2x_vf_doorbells(struct bnx2x *bp)
{
/* vf doorbells are embedded within the regview */
return bp->regview + PXP_VF_ADDR_DB_START;
}
void bnx2x_vf_pci_dealloc(struct bnx2x *bp)
{
BNX2X_PCI_FREE(bp->vf2pf_mbox, bp->vf2pf_mbox_mapping,
sizeof(struct bnx2x_vf_mbx_msg));
BNX2X_PCI_FREE(bp->vf2pf_mbox, bp->pf2vf_bulletin_mapping,
sizeof(union pf_vf_bulletin));
}
int bnx2x_vf_pci_alloc(struct bnx2x *bp)
{
mutex_init(&bp->vf2pf_mutex);
/* allocate vf2pf mailbox for vf to pf channel */
bp->vf2pf_mbox = BNX2X_PCI_ALLOC(&bp->vf2pf_mbox_mapping,
sizeof(struct bnx2x_vf_mbx_msg));
if (!bp->vf2pf_mbox)
goto alloc_mem_err;
/* allocate pf 2 vf bulletin board */
bp->pf2vf_bulletin = BNX2X_PCI_ALLOC(&bp->pf2vf_bulletin_mapping,
sizeof(union pf_vf_bulletin));
if (!bp->pf2vf_bulletin)
goto alloc_mem_err;
bnx2x_vf_bulletin_finalize(&bp->pf2vf_bulletin->content, true);
return 0;
alloc_mem_err:
bnx2x_vf_pci_dealloc(bp);
return -ENOMEM;
}
void bnx2x_iov_channel_down(struct bnx2x *bp)
{
int vf_idx;
struct pf_vf_bulletin_content *bulletin;
if (!IS_SRIOV(bp))
return;
for_each_vf(bp, vf_idx) {
/* locate this VFs bulletin board and update the channel down
* bit
*/
bulletin = BP_VF_BULLETIN(bp, vf_idx);
bulletin->valid_bitmap |= 1 << CHANNEL_DOWN;
/* update vf bulletin board */
bnx2x_post_vf_bulletin(bp, vf_idx);
}
}
void bnx2x_iov_task(struct work_struct *work)
{
struct bnx2x *bp = container_of(work, struct bnx2x, iov_task.work);
if (!netif_running(bp->dev))
return;
if (test_and_clear_bit(BNX2X_IOV_HANDLE_FLR,
&bp->iov_task_state))
bnx2x_vf_handle_flr_event(bp);
if (test_and_clear_bit(BNX2X_IOV_HANDLE_VF_MSG,
&bp->iov_task_state))
bnx2x_vf_mbx(bp);
}
void bnx2x_schedule_iov_task(struct bnx2x *bp, enum bnx2x_iov_flag flag)
{
smp_mb__before_atomic();
set_bit(flag, &bp->iov_task_state);
smp_mb__after_atomic();
DP(BNX2X_MSG_IOV, "Scheduling iov task [Flag: %d]\n", flag);
queue_delayed_work(bnx2x_iov_wq, &bp->iov_task, 0);
}