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net/bnx2x: fix to add PHY lock

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This patch adds phy_lock, acquire/release the lock when performing
PHY transactions. Without this fix driver can run into synchronization
issues with management FW when modifying PHY settings.

Fixes: 540a211084 ("bnx2x: driver core")
Cc: stable@dpdk.org

Signed-off-by: Rasesh Mody <rasesh.mody@cavium.com>
This commit is contained in:
Rasesh Mody 2018-09-29 05:42:41 +00:00 committed by Ferruh Yigit
parent 0f6ebeee24
commit a9b58b15ed
3 changed files with 60 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

59
drivers/net/bnx2x/bnx2x.c
View File

@ -112,6 +112,7 @@ static void bnx2x_pf_disable(struct bnx2x_softc *sc);
static void bnx2x_update_rx_prod(struct bnx2x_softc *sc,
struct bnx2x_fastpath *fp,
uint16_t rx_bd_prod, uint16_t rx_cq_prod);
static void bnx2x_link_report_locked(struct bnx2x_softc *sc);
static void bnx2x_link_report(struct bnx2x_softc *sc);
void bnx2x_link_status_update(struct bnx2x_softc *sc);
static int bnx2x_alloc_mem(struct bnx2x_softc *sc);
@ -198,7 +199,8 @@ static int bnx2x_acquire_hw_lock(struct bnx2x_softc *sc, uint32_t resource)
uint32_t hw_lock_control_reg;
int cnt;
PMD_INIT_FUNC_TRACE(sc);
if (resource)
PMD_INIT_FUNC_TRACE(sc);
/* validate the resource is within range */
if (resource > HW_LOCK_MAX_RESOURCE_VALUE) {
@ -234,7 +236,8 @@ static int bnx2x_acquire_hw_lock(struct bnx2x_softc *sc, uint32_t resource)
DELAY(5000);
}
PMD_DRV_LOG(NOTICE, sc, "Resource lock timeout!");
PMD_DRV_LOG(NOTICE, sc, "Resource 0x%x resource_bit 0x%x lock timeout!",
resource, resource_bit);
return -1;
}
@ -245,13 +248,14 @@ static int bnx2x_release_hw_lock(struct bnx2x_softc *sc, uint32_t resource)
int func = SC_FUNC(sc);
uint32_t hw_lock_control_reg;
PMD_INIT_FUNC_TRACE(sc);
if (resource)
PMD_INIT_FUNC_TRACE(sc);
/* validate the resource is within range */
if (resource > HW_LOCK_MAX_RESOURCE_VALUE) {
PMD_DRV_LOG(NOTICE, sc,
"resource 0x%x > HW_LOCK_MAX_RESOURCE_VALUE",
resource);
"(resource 0x%x > HW_LOCK_MAX_RESOURCE_VALUE)"
" resource_bit 0x%x", resource, resource_bit);
return -1;
}
@ -275,6 +279,18 @@ static int bnx2x_release_hw_lock(struct bnx2x_softc *sc, uint32_t resource)
return 0;
}
static void bnx2x_acquire_phy_lock(struct bnx2x_softc *sc)
{
BNX2X_PHY_LOCK(sc);
bnx2x_acquire_hw_lock(sc, HW_LOCK_RESOURCE_MDIO);
}
static void bnx2x_release_phy_lock(struct bnx2x_softc *sc)
{
bnx2x_release_hw_lock(sc, HW_LOCK_RESOURCE_MDIO);
BNX2X_PHY_UNLOCK(sc);
}
/* copy command into DMAE command memory and set DMAE command Go */
void bnx2x_post_dmae(struct bnx2x_softc *sc, struct dmae_command *dmae, int idx)
{
@ -2903,7 +2919,7 @@ static void bnx2x_link_attn(struct bnx2x_softc *sc)
}
}
bnx2x_link_report(sc);
bnx2x_link_report_locked(sc);
if (IS_MF(sc)) {
bnx2x_link_sync_notify(sc);
@ -2942,6 +2958,7 @@ static void bnx2x_attn_int_asserted(struct bnx2x_softc *sc, uint32_t asserted)
if (asserted & ATTN_HARD_WIRED_MASK) {
if (asserted & ATTN_NIG_FOR_FUNC) {
bnx2x_acquire_phy_lock(sc);
/* save nig interrupt mask */
nig_mask = REG_RD(sc, nig_int_mask_addr);
@ -3039,6 +3056,7 @@ static void bnx2x_attn_int_asserted(struct bnx2x_softc *sc, uint32_t asserted)
REG_WR(sc, nig_int_mask_addr, nig_mask);
bnx2x_release_phy_lock(sc);
}
}
@ -3838,8 +3856,10 @@ static void bnx2x_attn_int_deasserted3(struct bnx2x_softc *sc, uint32_t attn)
if (sc->link_vars.periodic_flags &
ELINK_PERIODIC_FLAGS_LINK_EVENT) {
/* sync with link */
bnx2x_acquire_phy_lock(sc);
sc->link_vars.periodic_flags &=
~ELINK_PERIODIC_FLAGS_LINK_EVENT;
bnx2x_release_phy_lock(sc);
if (IS_MF(sc)) {
bnx2x_link_sync_notify(sc);
}
@ -4029,7 +4049,9 @@ static void bnx2x_attn_int_deasserted0(struct bnx2x_softc *sc, uint32_t attn)
}
if ((attn & sc->link_vars.aeu_int_mask) && sc->port.pmf) {
bnx2x_acquire_phy_lock(sc);
elink_handle_module_detect_int(&sc->link_params);
bnx2x_release_phy_lock(sc);
}
if (attn & HW_INTERRUT_ASSERT_SET_0) {
@ -6867,7 +6889,7 @@ bnx2x_fill_report_data(struct bnx2x_softc *sc, struct bnx2x_link_report_data *da
}
/* report link status to OS, should be called under phy_lock */
static void bnx2x_link_report(struct bnx2x_softc *sc)
static void bnx2x_link_report_locked(struct bnx2x_softc *sc)
{
struct bnx2x_link_report_data cur_data;
@ -6888,8 +6910,13 @@ static void bnx2x_link_report(struct bnx2x_softc *sc)
return;
}
PMD_DRV_LOG(INFO, sc, "Change in link status : cur_data = %lx, last_reported_link = %lx\n",
cur_data.link_report_flags,
sc->last_reported_link.link_report_flags);
sc->link_cnt++;
PMD_DRV_LOG(INFO, sc, "link status change count = %x\n", sc->link_cnt);
/* report new link params and remember the state for the next time */
rte_memcpy(&sc->last_reported_link, &cur_data, sizeof(cur_data));
@ -6941,6 +6968,14 @@ static void bnx2x_link_report(struct bnx2x_softc *sc)
}
}
static void
bnx2x_link_report(struct bnx2x_softc *sc)
{
bnx2x_acquire_phy_lock(sc);
bnx2x_link_report_locked(sc);
bnx2x_release_phy_lock(sc);
}
void bnx2x_link_status_update(struct bnx2x_softc *sc)
{
if (sc->state != BNX2X_STATE_OPEN) {
@ -7019,6 +7054,8 @@ static int bnx2x_initial_phy_init(struct bnx2x_softc *sc, int load_mode)
bnx2x_set_requested_fc(sc);
bnx2x_acquire_phy_lock(sc);
if (load_mode == LOAD_DIAG) {
lp->loopback_mode = ELINK_LOOPBACK_XGXS;
/* Prefer doing PHY loopback at 10G speed, if possible */
@ -7038,6 +7075,8 @@ static int bnx2x_initial_phy_init(struct bnx2x_softc *sc, int load_mode)
rc = elink_phy_init(&sc->link_params, &sc->link_vars);
bnx2x_release_phy_lock(sc);
bnx2x_calc_fc_adv(sc);
if (sc->link_vars.link_up) {
@ -7088,7 +7127,9 @@ void bnx2x_periodic_callout(struct bnx2x_softc *sc)
*/
mb();
if (sc->port.pmf) {
bnx2x_acquire_phy_lock(sc);
elink_period_func(&sc->link_params, &sc->link_vars);
bnx2x_release_phy_lock(sc);
}
}
#ifdef BNX2X_PULSE
@ -9840,8 +9881,10 @@ static void bnx2x_common_init_phy(struct bnx2x_softc *sc)
shmem2_base[1] = SHMEM2_RD(sc, other_shmem2_base_addr);
}
bnx2x_acquire_phy_lock(sc);
elink_common_init_phy(sc, shmem_base, shmem2_base,
sc->devinfo.chip_id, 0);
bnx2x_release_phy_lock(sc);
}
static void bnx2x_pf_disable(struct bnx2x_softc *sc)
@ -11320,7 +11363,9 @@ static int bnx2x_init_hw_func(struct bnx2x_softc *sc)
static void bnx2x_link_reset(struct bnx2x_softc *sc)
{
if (!BNX2X_NOMCP(sc)) {
bnx2x_acquire_phy_lock(sc);
elink_lfa_reset(&sc->link_params, &sc->link_vars);
bnx2x_release_phy_lock(sc);
} else {
if (!CHIP_REV_IS_SLOW(sc)) {
PMD_DRV_LOG(WARNING, sc,

7
drivers/net/bnx2x/bnx2x.h
View File

@ -725,6 +725,13 @@ struct bnx2x_port {
uint32_t phy_addr;
/* Used to synchronize phy accesses. */
rte_spinlock_t phy_mtx;
char phy_mtx_name[32];
#define BNX2X_PHY_LOCK(sc) rte_spinlock_lock(&sc->port.phy_mtx)
#define BNX2X_PHY_UNLOCK(sc) rte_spinlock_unlock(&sc->port.phy_mtx)
/*
* MCP scratchpad address for port specific statistics.
* The device is responsible for writing statistcss

1
drivers/net/bnx2x/ecore_reg.h
View File

@ -1967,6 +1967,7 @@
#define HW_LOCK_MAX_RESOURCE_VALUE 31
#define HW_LOCK_RESOURCE_DRV_FLAGS 10
#define HW_LOCK_RESOURCE_GPIO 1
#define HW_LOCK_RESOURCE_MDIO 0
#define HW_LOCK_RESOURCE_NVRAM 12
#define HW_LOCK_RESOURCE_PORT0_ATT_MASK 3
#define HW_LOCK_RESOURCE_RECOVERY_LEADER_0 8