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-rw-r--r--drivers/net/ethernet/broadcom/bnxt/bnxt.c106
-rw-r--r--drivers/net/ethernet/broadcom/bnxt/bnxt.h42
-rw-r--r--drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c151
-rw-r--r--drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h36
4 files changed, 252 insertions, 83 deletions
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 1bd0c5973252..a1690207d793 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -456,8 +456,9 @@ static netdev_tx_t bnxt_start_xmit(struct sk_buff *skb, struct net_device *dev)
dma_addr_t mapping;
unsigned int length, pad = 0;
u32 len, free_size, vlan_tag_flags, cfa_action, flags;
- u16 prod, last_frag;
+ struct bnxt_ptp_cfg *ptp = bp->ptp_cfg;
struct pci_dev *pdev = bp->pdev;
+ u16 prod, last_frag, txts_prod;
struct bnxt_tx_ring_info *txr;
struct bnxt_sw_tx_bd *tx_buf;
__le32 lflags = 0;
@@ -509,27 +510,29 @@ static netdev_tx_t bnxt_start_xmit(struct sk_buff *skb, struct net_device *dev)
vlan_tag_flags |= 1 << TX_BD_CFA_META_TPID_SHIFT;
}
- if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) {
- struct bnxt_ptp_cfg *ptp = bp->ptp_cfg;
+ if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) && ptp &&
+ ptp->tx_tstamp_en) {
+ if (bp->fw_cap & BNXT_FW_CAP_TX_TS_CMP) {
+ lflags |= cpu_to_le32(TX_BD_FLAGS_STAMP);
+ tx_buf->is_ts_pkt = 1;
+ skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
+ } else if (!skb_is_gso(skb)) {
+ u16 seq_id, hdr_off;
- if (ptp && ptp->tx_tstamp_en && !skb_is_gso(skb)) {
- if (atomic_dec_if_positive(&ptp->tx_avail) < 0) {
- atomic64_inc(&ptp->stats.ts_err);
- goto tx_no_ts;
- }
- if (!bnxt_ptp_parse(skb, &ptp->tx_seqid,
- &ptp->tx_hdr_off)) {
+ if (!bnxt_ptp_parse(skb, &seq_id, &hdr_off) &&
+ !bnxt_ptp_get_txts_prod(ptp, &txts_prod)) {
if (vlan_tag_flags)
- ptp->tx_hdr_off += VLAN_HLEN;
+ hdr_off += VLAN_HLEN;
lflags |= cpu_to_le32(TX_BD_FLAGS_STAMP);
+ tx_buf->is_ts_pkt = 1;
skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
- } else {
- atomic_inc(&bp->ptp_cfg->tx_avail);
+
+ ptp->txts_req[txts_prod].tx_seqid = seq_id;
+ ptp->txts_req[txts_prod].tx_hdr_off = hdr_off;
+ tx_buf->txts_prod = txts_prod;
}
}
}
-
-tx_no_ts:
if (unlikely(skb->no_fcs))
lflags |= cpu_to_le32(TX_BD_FLAGS_NO_CRC);
@@ -758,8 +761,11 @@ tx_free:
dev_kfree_skb_any(skb);
tx_kick_pending:
if (BNXT_TX_PTP_IS_SET(lflags)) {
+ txr->tx_buf_ring[txr->tx_prod].is_ts_pkt = 0;
atomic64_inc(&bp->ptp_cfg->stats.ts_err);
- atomic_inc(&bp->ptp_cfg->tx_avail);
+ if (!(bp->fw_cap & BNXT_FW_CAP_TX_TS_CMP))
+ /* set SKB to err so PTP worker will clean up */
+ ptp->txts_req[txts_prod].tx_skb = ERR_PTR(-EIO);
}
if (txr->kick_pending)
bnxt_txr_db_kick(bp, txr, txr->tx_prod);
@@ -768,7 +774,8 @@ tx_kick_pending:
return NETDEV_TX_OK;
}
-static void __bnxt_tx_int(struct bnxt *bp, struct bnxt_tx_ring_info *txr,
+/* Returns true if some remaining TX packets not processed. */
+static bool __bnxt_tx_int(struct bnxt *bp, struct bnxt_tx_ring_info *txr,
int budget)
{
struct netdev_queue *txq = netdev_get_tx_queue(bp->dev, txr->txq_index);
@@ -777,24 +784,33 @@ static void __bnxt_tx_int(struct bnxt *bp, struct bnxt_tx_ring_info *txr,
unsigned int tx_bytes = 0;
u16 cons = txr->tx_cons;
int tx_pkts = 0;
+ bool rc = false;
while (RING_TX(bp, cons) != hw_cons) {
struct bnxt_sw_tx_bd *tx_buf;
struct sk_buff *skb;
+ bool is_ts_pkt;
int j, last;
tx_buf = &txr->tx_buf_ring[RING_TX(bp, cons)];
- cons = NEXT_TX(cons);
skb = tx_buf->skb;
- tx_buf->skb = NULL;
if (unlikely(!skb)) {
bnxt_sched_reset_txr(bp, txr, cons);
- return;
+ return rc;
}
+ is_ts_pkt = tx_buf->is_ts_pkt;
+ if (is_ts_pkt && (bp->fw_cap & BNXT_FW_CAP_TX_TS_CMP)) {
+ rc = true;
+ break;
+ }
+
+ cons = NEXT_TX(cons);
tx_pkts++;
tx_bytes += skb->len;
+ tx_buf->skb = NULL;
+ tx_buf->is_ts_pkt = 0;
if (tx_buf->is_push) {
tx_buf->is_push = 0;
@@ -814,15 +830,11 @@ static void __bnxt_tx_int(struct bnxt *bp, struct bnxt_tx_ring_info *txr,
skb_frag_size(&skb_shinfo(skb)->frags[j]),
DMA_TO_DEVICE);
}
- if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS)) {
+ if (unlikely(is_ts_pkt)) {
if (BNXT_CHIP_P5(bp)) {
/* PTP worker takes ownership of the skb */
- if (!bnxt_get_tx_ts_p5(bp, skb)) {
- skb = NULL;
- } else {
- atomic64_inc(&bp->ptp_cfg->stats.ts_err);
- atomic_inc(&bp->ptp_cfg->tx_avail);
- }
+ bnxt_get_tx_ts_p5(bp, skb, tx_buf->txts_prod);
+ skb = NULL;
}
}
@@ -837,18 +849,22 @@ next_tx_int:
__netif_txq_completed_wake(txq, tx_pkts, tx_bytes,
bnxt_tx_avail(bp, txr), bp->tx_wake_thresh,
READ_ONCE(txr->dev_state) == BNXT_DEV_STATE_CLOSING);
+
+ return rc;
}
static void bnxt_tx_int(struct bnxt *bp, struct bnxt_napi *bnapi, int budget)
{
struct bnxt_tx_ring_info *txr;
+ bool more = false;
int i;
bnxt_for_each_napi_tx(i, bnapi, txr) {
if (txr->tx_hw_cons != RING_TX(bp, txr->tx_cons))
- __bnxt_tx_int(bp, txr, budget);
+ more |= __bnxt_tx_int(bp, txr, budget);
}
- bnapi->events &= ~BNXT_TX_CMP_EVENT;
+ if (!more)
+ bnapi->events &= ~BNXT_TX_CMP_EVENT;
}
static struct page *__bnxt_alloc_rx_page(struct bnxt *bp, dma_addr_t *mapping,
@@ -2914,6 +2930,8 @@ static int __bnxt_poll_work(struct bnxt *bp, struct bnxt_cp_ring_info *cpr,
cpr->has_more_work = 1;
break;
}
+ } else if (cmp_type == CMP_TYPE_TX_L2_PKT_TS_CMP) {
+ bnxt_tx_ts_cmp(bp, bnapi, (struct tx_ts_cmp *)txcmp);
} else if (cmp_type >= CMP_TYPE_RX_L2_CMP &&
cmp_type <= CMP_TYPE_RX_L2_TPA_START_V3_CMP) {
if (likely(budget))
@@ -2945,8 +2963,10 @@ static int __bnxt_poll_work(struct bnxt *bp, struct bnxt_cp_ring_info *cpr,
}
}
- if (event & BNXT_REDIRECT_EVENT)
+ if (event & BNXT_REDIRECT_EVENT) {
xdp_do_flush();
+ event &= ~BNXT_REDIRECT_EVENT;
+ }
if (event & BNXT_TX_EVENT) {
struct bnxt_tx_ring_info *txr = bnapi->tx_ring[0];
@@ -2956,6 +2976,7 @@ static int __bnxt_poll_work(struct bnxt *bp, struct bnxt_cp_ring_info *cpr,
wmb();
bnxt_db_write_relaxed(bp, &txr->tx_db, prod);
+ event &= ~BNXT_TX_EVENT;
}
cpr->cp_raw_cons = raw_cons;
@@ -2973,13 +2994,14 @@ static void __bnxt_poll_work_done(struct bnxt *bp, struct bnxt_napi *bnapi,
struct bnxt_rx_ring_info *rxr = bnapi->rx_ring;
bnxt_db_write(bp, &rxr->rx_db, rxr->rx_prod);
+ bnapi->events &= ~BNXT_RX_EVENT;
}
if (bnapi->events & BNXT_AGG_EVENT) {
struct bnxt_rx_ring_info *rxr = bnapi->rx_ring;
bnxt_db_write(bp, &rxr->rx_agg_db, rxr->rx_agg_prod);
+ bnapi->events &= ~BNXT_AGG_EVENT;
}
- bnapi->events &= BNXT_TX_CMP_EVENT;
}
static int bnxt_poll_work(struct bnxt *bp, struct bnxt_cp_ring_info *cpr,
@@ -6788,6 +6810,7 @@ static int hwrm_ring_alloc_send_msg(struct bnxt *bp,
switch (ring_type) {
case HWRM_RING_ALLOC_TX: {
struct bnxt_tx_ring_info *txr;
+ u16 flags = 0;
txr = container_of(ring, struct bnxt_tx_ring_info,
tx_ring_struct);
@@ -6801,6 +6824,9 @@ static int hwrm_ring_alloc_send_msg(struct bnxt *bp,
if (bp->flags & BNXT_FLAG_TX_COAL_CMPL)
req->cmpl_coal_cnt =
RING_ALLOC_REQ_CMPL_COAL_CNT_COAL_64;
+ if ((bp->fw_cap & BNXT_FW_CAP_TX_TS_CMP) && bp->ptp_cfg)
+ flags |= RING_ALLOC_REQ_FLAGS_TX_PKT_TS_CMPL_ENABLE;
+ req->flags = cpu_to_le16(flags);
break;
}
case HWRM_RING_ALLOC_RX:
@@ -8981,7 +9007,7 @@ static int __bnxt_hwrm_ptp_qcfg(struct bnxt *bp)
u8 flags;
int rc;
- if (bp->hwrm_spec_code < 0x10801 || !BNXT_CHIP_P5(bp)) {
+ if (bp->hwrm_spec_code < 0x10801 || !BNXT_CHIP_P5_PLUS(bp)) {
rc = -ENODEV;
goto no_ptp;
}
@@ -8997,7 +9023,8 @@ static int __bnxt_hwrm_ptp_qcfg(struct bnxt *bp)
goto exit;
flags = resp->flags;
- if (!(flags & PORT_MAC_PTP_QCFG_RESP_FLAGS_HWRM_ACCESS)) {
+ if (BNXT_CHIP_P5_AND_MINUS(bp) &&
+ !(flags & PORT_MAC_PTP_QCFG_RESP_FLAGS_HWRM_ACCESS)) {
rc = -ENODEV;
goto exit;
}
@@ -9010,10 +9037,13 @@ static int __bnxt_hwrm_ptp_qcfg(struct bnxt *bp)
ptp->bp = bp;
bp->ptp_cfg = ptp;
}
- if (flags & PORT_MAC_PTP_QCFG_RESP_FLAGS_PARTIAL_DIRECT_ACCESS_REF_CLOCK) {
+
+ if (flags &
+ (PORT_MAC_PTP_QCFG_RESP_FLAGS_PARTIAL_DIRECT_ACCESS_REF_CLOCK |
+ PORT_MAC_PTP_QCFG_RESP_FLAGS_64B_PHC_TIME)) {
ptp->refclk_regs[0] = le32_to_cpu(resp->ts_ref_clock_reg_lower);
ptp->refclk_regs[1] = le32_to_cpu(resp->ts_ref_clock_reg_upper);
- } else if (bp->flags & BNXT_FLAG_CHIP_P5_PLUS) {
+ } else if (BNXT_CHIP_P5(bp)) {
ptp->refclk_regs[0] = BNXT_TS_REG_TIMESYNC_TS0_LOWER;
ptp->refclk_regs[1] = BNXT_TS_REG_TIMESYNC_TS0_UPPER;
} else {
@@ -9095,6 +9125,8 @@ static int __bnxt_hwrm_func_qcaps(struct bnxt *bp)
bp->fw_cap |= BNXT_FW_CAP_RX_ALL_PKT_TS;
if (flags_ext2 & FUNC_QCAPS_RESP_FLAGS_EXT2_UDP_GSO_SUPPORTED)
bp->flags |= BNXT_FLAG_UDP_GSO_CAP;
+ if (flags_ext2 & FUNC_QCAPS_RESP_FLAGS_EXT2_TX_PKT_TS_CMPL_SUPPORTED)
+ bp->fw_cap |= BNXT_FW_CAP_TX_TS_CMP;
bp->tx_push_thresh = 0;
if ((flags & FUNC_QCAPS_RESP_FLAGS_PUSH_MODE_SUPPORTED) &&
@@ -12136,8 +12168,8 @@ static int __bnxt_open_nic(struct bnxt *bp, bool irq_re_init, bool link_re_init)
/* VF-reps may need to be re-opened after the PF is re-opened */
if (BNXT_PF(bp))
bnxt_vf_reps_open(bp);
- if (bp->ptp_cfg)
- atomic_set(&bp->ptp_cfg->tx_avail, BNXT_MAX_TX_TS);
+ if (bp->ptp_cfg && !(bp->fw_cap & BNXT_FW_CAP_TX_TS_CMP))
+ WRITE_ONCE(bp->ptp_cfg->tx_avail, BNXT_MAX_TX_TS);
bnxt_ptp_init_rtc(bp, true);
bnxt_ptp_cfg_tstamp_filters(bp);
if (BNXT_SUPPORTS_MULTI_RSS_CTX(bp))
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index 9cf0acfa04e5..e46bd11e52b0 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -181,6 +181,32 @@ struct tx_cmp {
#define TX_CMP_SQ_CONS_IDX(txcmp) \
(le32_to_cpu((txcmp)->sq_cons_idx) & TX_CMP_SQ_CONS_IDX_MASK)
+struct tx_ts_cmp {
+ __le32 tx_ts_cmp_flags_type;
+ #define TX_TS_CMP_FLAGS_ERROR (1 << 6)
+ #define TX_TS_CMP_FLAGS_TS_TYPE (1 << 7)
+ #define TX_TS_CMP_FLAGS_TS_TYPE_PM (0 << 7)
+ #define TX_TS_CMP_FLAGS_TS_TYPE_PA (1 << 7)
+ #define TX_TS_CMP_FLAGS_TS_FALLBACK (1 << 8)
+ #define TX_TS_CMP_TS_SUB_NS (0xf << 12)
+ #define TX_TS_CMP_TS_NS_MID (0xffff << 16)
+ #define TX_TS_CMP_TS_NS_MID_SFT 16
+ u32 tx_ts_cmp_opaque;
+ __le32 tx_ts_cmp_errors_v;
+ #define TX_TS_CMP_V (1 << 0)
+ #define TX_TS_CMP_TS_INVALID_ERR (1 << 10)
+ __le32 tx_ts_cmp_ts_ns_lo;
+};
+
+#define BNXT_GET_TX_TS_48B_NS(tscmp) \
+ (le32_to_cpu((tscmp)->tx_ts_cmp_ts_ns_lo) | \
+ ((u64)(le32_to_cpu((tscmp)->tx_ts_cmp_flags_type) & \
+ TX_TS_CMP_TS_NS_MID) << TX_TS_CMP_TS_NS_MID_SFT))
+
+#define BNXT_TX_TS_ERR(tscmp) \
+ (((tscmp)->tx_ts_cmp_flags_type & cpu_to_le32(TX_TS_CMP_FLAGS_ERROR)) &&\
+ ((tscmp)->tx_ts_cmp_errors_v & cpu_to_le32(TX_TS_CMP_TS_INVALID_ERR)))
+
struct rx_cmp {
__le32 rx_cmp_len_flags_type;
#define RX_CMP_CMP_TYPE (0x3f << 0)
@@ -848,11 +874,14 @@ struct bnxt_sw_tx_bd {
DEFINE_DMA_UNMAP_ADDR(mapping);
DEFINE_DMA_UNMAP_LEN(len);
struct page *page;
- u8 is_gso;
+ u8 is_ts_pkt;
u8 is_push;
u8 action;
unsigned short nr_frags;
- u16 rx_prod;
+ union {
+ u16 rx_prod;
+ u16 txts_prod;
+ };
};
struct bnxt_sw_rx_bd {
@@ -2237,9 +2266,17 @@ struct bnxt {
(BNXT_CHIP_NUM_58700((bp)->chip_num) && \
!BNXT_CHIP_TYPE_NITRO_A0(bp)))
+/* Chip class phase 3.x */
+#define BNXT_CHIP_P3(bp) \
+ (BNXT_CHIP_NUM_57X0X((bp)->chip_num) || \
+ BNXT_CHIP_TYPE_NITRO_A0(bp))
+
#define BNXT_CHIP_P4_PLUS(bp) \
(BNXT_CHIP_P4(bp) || BNXT_CHIP_P5_PLUS(bp))
+#define BNXT_CHIP_P5_AND_MINUS(bp) \
+ (BNXT_CHIP_P3(bp) || BNXT_CHIP_P4(bp) || BNXT_CHIP_P5(bp))
+
struct bnxt_aux_priv *aux_priv;
struct bnxt_en_dev *edev;
@@ -2384,6 +2421,7 @@ struct bnxt {
#define BNXT_FW_CAP_CFA_RFS_RING_TBL_IDX_V2 BIT_ULL(16)
#define BNXT_FW_CAP_PCIE_STATS_SUPPORTED BIT_ULL(17)
#define BNXT_FW_CAP_EXT_STATS_SUPPORTED BIT_ULL(18)
+ #define BNXT_FW_CAP_TX_TS_CMP BIT_ULL(19)
#define BNXT_FW_CAP_ERR_RECOVER_RELOAD BIT_ULL(20)
#define BNXT_FW_CAP_HOT_RESET BIT_ULL(21)
#define BNXT_FW_CAP_PTP_RTC BIT_ULL(22)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c
index a14d46b9bfdf..37d42423459c 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c
@@ -110,7 +110,7 @@ static void bnxt_ptp_get_current_time(struct bnxt *bp)
}
static int bnxt_hwrm_port_ts_query(struct bnxt *bp, u32 flags, u64 *ts,
- u32 txts_tmo)
+ u32 txts_tmo, int slot)
{
struct hwrm_port_ts_query_output *resp;
struct hwrm_port_ts_query_input *req;
@@ -123,11 +123,12 @@ static int bnxt_hwrm_port_ts_query(struct bnxt *bp, u32 flags, u64 *ts,
req->flags = cpu_to_le32(flags);
if ((flags & PORT_TS_QUERY_REQ_FLAGS_PATH) ==
PORT_TS_QUERY_REQ_FLAGS_PATH_TX) {
+ struct bnxt_ptp_tx_req *txts_req = &bp->ptp_cfg->txts_req[slot];
u32 tmo_us = txts_tmo * 1000;
req->enables = cpu_to_le16(BNXT_PTP_QTS_TX_ENABLES);
- req->ptp_seq_id = cpu_to_le32(bp->ptp_cfg->tx_seqid);
- req->ptp_hdr_offset = cpu_to_le16(bp->ptp_cfg->tx_hdr_off);
+ req->ptp_seq_id = cpu_to_le32(txts_req->tx_seqid);
+ req->ptp_hdr_offset = cpu_to_le16(txts_req->tx_hdr_off);
if (!tmo_us)
tmo_us = BNXT_PTP_QTS_TIMEOUT;
tmo_us = min(tmo_us, BNXT_PTP_QTS_MAX_TMO_US);
@@ -656,6 +657,14 @@ static int bnxt_map_ptp_regs(struct bnxt *bp)
(ptp->refclk_regs[i] & BNXT_GRC_OFFSET_MASK);
return 0;
}
+ if (bp->flags & BNXT_FLAG_CHIP_P7) {
+ for (i = 0; i < 2; i++) {
+ if (reg_arr[i] & BNXT_GRC_BASE_MASK)
+ return -EINVAL;
+ ptp->refclk_mapped_regs[i] = reg_arr[i];
+ }
+ return 0;
+ }
return -ENODEV;
}
@@ -674,43 +683,44 @@ static u64 bnxt_cc_read(const struct cyclecounter *cc)
return ns;
}
-static void bnxt_stamp_tx_skb(struct bnxt *bp, struct sk_buff *skb)
+static int bnxt_stamp_tx_skb(struct bnxt *bp, int slot)
{
struct bnxt_ptp_cfg *ptp = bp->ptp_cfg;
struct skb_shared_hwtstamps timestamp;
+ struct bnxt_ptp_tx_req *txts_req;
unsigned long now = jiffies;
u64 ts = 0, ns = 0;
u32 tmo = 0;
int rc;
- if (!ptp->txts_pending)
- ptp->abs_txts_tmo = now + msecs_to_jiffies(ptp->txts_tmo);
- if (!time_after_eq(now, ptp->abs_txts_tmo))
- tmo = jiffies_to_msecs(ptp->abs_txts_tmo - now);
+ txts_req = &ptp->txts_req[slot];
+ /* make sure bnxt_get_tx_ts_p5() has updated abs_txts_tmo */
+ smp_rmb();
+ if (!time_after_eq(now, txts_req->abs_txts_tmo))
+ tmo = jiffies_to_msecs(txts_req->abs_txts_tmo - now);
rc = bnxt_hwrm_port_ts_query(bp, PORT_TS_QUERY_REQ_FLAGS_PATH_TX, &ts,
- tmo);
+ tmo, slot);
if (!rc) {
memset(&timestamp, 0, sizeof(timestamp));
spin_lock_bh(&ptp->ptp_lock);
ns = timecounter_cyc2time(&ptp->tc, ts);
spin_unlock_bh(&ptp->ptp_lock);
timestamp.hwtstamp = ns_to_ktime(ns);
- skb_tstamp_tx(ptp->tx_skb, &timestamp);
+ skb_tstamp_tx(txts_req->tx_skb, &timestamp);
ptp->stats.ts_pkts++;
} else {
- if (!time_after_eq(jiffies, ptp->abs_txts_tmo)) {
- ptp->txts_pending = true;
- return;
- }
+ if (!time_after_eq(jiffies, txts_req->abs_txts_tmo))
+ return -EAGAIN;
+
ptp->stats.ts_lost++;
netdev_warn_once(bp->dev,
"TS query for TX timer failed rc = %x\n", rc);
}
- dev_kfree_skb_any(ptp->tx_skb);
- ptp->tx_skb = NULL;
- atomic_inc(&ptp->tx_avail);
- ptp->txts_pending = false;
+ dev_kfree_skb_any(txts_req->tx_skb);
+ txts_req->tx_skb = NULL;
+
+ return 0;
}
static long bnxt_ptp_ts_aux_work(struct ptp_clock_info *ptp_info)
@@ -719,12 +729,30 @@ static long bnxt_ptp_ts_aux_work(struct ptp_clock_info *ptp_info)
ptp_info);
unsigned long now = jiffies;
struct bnxt *bp = ptp->bp;
+ u16 cons = ptp->txts_cons;
+ u32 num_requests;
+ int rc = 0;
+
+ num_requests = BNXT_MAX_TX_TS - READ_ONCE(ptp->tx_avail);
+ while (num_requests--) {
+ if (IS_ERR(ptp->txts_req[cons].tx_skb))
+ goto next_slot;
+ if (!ptp->txts_req[cons].tx_skb)
+ break;
+ rc = bnxt_stamp_tx_skb(bp, cons);
+ if (rc == -EAGAIN)
+ break;
+next_slot:
+ BNXT_PTP_INC_TX_AVAIL(ptp);
+ cons = NEXT_TXTS(cons);
+ }
+ ptp->txts_cons = cons;
- if (ptp->tx_skb)
- bnxt_stamp_tx_skb(bp, ptp->tx_skb);
-
- if (!time_after_eq(now, ptp->next_period))
+ if (!time_after_eq(now, ptp->next_period)) {
+ if (rc == -EAGAIN)
+ return 0;
return ptp->next_period - now;
+ }
bnxt_ptp_get_current_time(bp);
ptp->next_period = now + HZ;
@@ -734,22 +762,37 @@ static long bnxt_ptp_ts_aux_work(struct ptp_clock_info *ptp_info)
spin_unlock_bh(&ptp->ptp_lock);
ptp->next_overflow_check = now + BNXT_PHC_OVERFLOW_PERIOD;
}
- if (ptp->txts_pending)
+ if (rc == -EAGAIN)
return 0;
return HZ;
}
-int bnxt_get_tx_ts_p5(struct bnxt *bp, struct sk_buff *skb)
+int bnxt_ptp_get_txts_prod(struct bnxt_ptp_cfg *ptp, u16 *prod)
+{
+ spin_lock_bh(&ptp->ptp_tx_lock);
+ if (ptp->tx_avail) {
+ *prod = ptp->txts_prod;
+ ptp->txts_prod = NEXT_TXTS(*prod);
+ ptp->tx_avail--;
+ spin_unlock_bh(&ptp->ptp_tx_lock);
+ return 0;
+ }
+ spin_unlock_bh(&ptp->ptp_tx_lock);
+ atomic64_inc(&ptp->stats.ts_err);
+ return -ENOSPC;
+}
+
+void bnxt_get_tx_ts_p5(struct bnxt *bp, struct sk_buff *skb, u16 prod)
{
struct bnxt_ptp_cfg *ptp = bp->ptp_cfg;
+ struct bnxt_ptp_tx_req *txts_req;
- if (ptp->tx_skb) {
- netdev_err(bp->dev, "deferring skb:one SKB is still outstanding\n");
- return -EBUSY;
- }
- ptp->tx_skb = skb;
+ txts_req = &ptp->txts_req[prod];
+ txts_req->abs_txts_tmo = jiffies + msecs_to_jiffies(ptp->txts_tmo);
+ /* make sure abs_txts_tmo is written first */
+ smp_wmb();
+ txts_req->tx_skb = skb;
ptp_schedule_worker(ptp->ptp_clock, 0);
- return 0;
}
int bnxt_get_rx_ts_p5(struct bnxt *bp, u64 *ts, u32 pkt_ts)
@@ -768,6 +811,38 @@ int bnxt_get_rx_ts_p5(struct bnxt *bp, u64 *ts, u32 pkt_ts)
return 0;
}
+void bnxt_tx_ts_cmp(struct bnxt *bp, struct bnxt_napi *bnapi,
+ struct tx_ts_cmp *tscmp)
+{
+ struct skb_shared_hwtstamps timestamp = {};
+ struct bnxt_ptp_cfg *ptp = bp->ptp_cfg;
+ u32 opaque = tscmp->tx_ts_cmp_opaque;
+ struct bnxt_tx_ring_info *txr;
+ struct bnxt_sw_tx_bd *tx_buf;
+ u64 ts, ns;
+ u16 cons;
+
+ txr = bnapi->tx_ring[TX_OPAQUE_RING(opaque)];
+ ts = BNXT_GET_TX_TS_48B_NS(tscmp);
+ cons = TX_OPAQUE_IDX(opaque);
+ tx_buf = &txr->tx_buf_ring[RING_TX(bp, cons)];
+ if (tx_buf->is_ts_pkt) {
+ if (BNXT_TX_TS_ERR(tscmp)) {
+ netdev_err(bp->dev,
+ "timestamp completion error 0x%x 0x%x\n",
+ le32_to_cpu(tscmp->tx_ts_cmp_flags_type),
+ le32_to_cpu(tscmp->tx_ts_cmp_errors_v));
+ } else {
+ spin_lock_bh(&ptp->ptp_lock);
+ ns = timecounter_cyc2time(&ptp->tc, ts);
+ spin_unlock_bh(&ptp->ptp_lock);
+ timestamp.hwtstamp = ns_to_ktime(ns);
+ skb_tstamp_tx(tx_buf->skb, &timestamp);
+ }
+ tx_buf->is_ts_pkt = 0;
+ }
+}
+
static const struct ptp_clock_info bnxt_ptp_caps = {
.owner = THIS_MODULE,
.name = "bnxt clock",
@@ -914,7 +989,7 @@ int bnxt_ptp_init_rtc(struct bnxt *bp, bool phc_cfg)
return rc;
} else {
rc = bnxt_hwrm_port_ts_query(bp, PORT_TS_QUERY_REQ_FLAGS_CURRENT_TIME,
- &ns, 0);
+ &ns, 0, 0);
if (rc)
return rc;
}
@@ -954,8 +1029,9 @@ int bnxt_ptp_init(struct bnxt *bp, bool phc_cfg)
bnxt_ptp_free(bp);
- atomic_set(&ptp->tx_avail, BNXT_MAX_TX_TS);
+ WRITE_ONCE(ptp->tx_avail, BNXT_MAX_TX_TS);
spin_lock_init(&ptp->ptp_lock);
+ spin_lock_init(&ptp->ptp_tx_lock);
if (BNXT_PTP_USE_RTC(bp)) {
bnxt_ptp_timecounter_init(bp, false);
@@ -986,7 +1062,7 @@ int bnxt_ptp_init(struct bnxt *bp, bool phc_cfg)
ptp->stats.ts_lost = 0;
atomic64_set(&ptp->stats.ts_err, 0);
- if (BNXT_CHIP_P5(bp)) {
+ if (bp->flags & BNXT_FLAG_CHIP_P5_PLUS) {
spin_lock_bh(&ptp->ptp_lock);
bnxt_refclk_read(bp, NULL, &ptp->current_time);
WRITE_ONCE(ptp->old_time, ptp->current_time);
@@ -1005,6 +1081,7 @@ out:
void bnxt_ptp_clear(struct bnxt *bp)
{
struct bnxt_ptp_cfg *ptp = bp->ptp_cfg;
+ int i;
if (!ptp)
return;
@@ -1016,9 +1093,11 @@ void bnxt_ptp_clear(struct bnxt *bp)
kfree(ptp->ptp_info.pin_config);
ptp->ptp_info.pin_config = NULL;
- if (ptp->tx_skb) {
- dev_kfree_skb_any(ptp->tx_skb);
- ptp->tx_skb = NULL;
+ for (i = 0; i < BNXT_MAX_TX_TS; i++) {
+ if (ptp->txts_req[i].tx_skb) {
+ dev_kfree_skb_any(ptp->txts_req[i].tx_skb);
+ ptp->txts_req[i].tx_skb = NULL;
+ }
}
bnxt_unmap_ptp_regs(bp);
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h
index 8c30b428a428..a9a2f9a18c9c 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h
@@ -85,6 +85,16 @@ struct bnxt_ptp_stats {
atomic64_t ts_err;
};
+#define BNXT_MAX_TX_TS 4
+#define NEXT_TXTS(idx) (((idx) + 1) & (BNXT_MAX_TX_TS - 1))
+
+struct bnxt_ptp_tx_req {
+ struct sk_buff *tx_skb;
+ u16 tx_seqid;
+ u16 tx_hdr_off;
+ unsigned long abs_txts_tmo;
+};
+
struct bnxt_ptp_cfg {
struct ptp_clock_info ptp_info;
struct ptp_clock *ptp_clock;
@@ -93,7 +103,8 @@ struct bnxt_ptp_cfg {
struct bnxt_pps pps_info;
/* serialize timecounter access */
spinlock_t ptp_lock;
- struct sk_buff *tx_skb;
+ /* serialize ts tx request queuing */
+ spinlock_t ptp_tx_lock;
u64 current_time;
u64 old_time;
unsigned long next_period;
@@ -102,11 +113,10 @@ struct bnxt_ptp_cfg {
/* a 23b shift cyclecounter will overflow in ~36 mins. Check overflow every 18 mins. */
#define BNXT_PHC_OVERFLOW_PERIOD (18 * 60 * HZ)
- u16 tx_seqid;
- u16 tx_hdr_off;
+ struct bnxt_ptp_tx_req txts_req[BNXT_MAX_TX_TS];
+
struct bnxt *bp;
- atomic_t tx_avail;
-#define BNXT_MAX_TX_TS 1
+ u32 tx_avail;
u16 rxctl;
#define BNXT_PTP_MSG_SYNC (1 << 0)
#define BNXT_PTP_MSG_DELAY_REQ (1 << 1)
@@ -123,14 +133,14 @@ struct bnxt_ptp_cfg {
BNXT_PTP_MSG_PDELAY_REQ | \
BNXT_PTP_MSG_PDELAY_RESP)
u8 tx_tstamp_en:1;
- u8 txts_pending:1;
int rx_filter;
u32 tstamp_filters;
u32 refclk_regs[2];
u32 refclk_mapped_regs[2];
u32 txts_tmo;
- unsigned long abs_txts_tmo;
+ u16 txts_prod;
+ u16 txts_cons;
struct bnxt_ptp_stats stats;
};
@@ -147,6 +157,13 @@ do { \
((dst) = READ_ONCE(src))
#endif
+#define BNXT_PTP_INC_TX_AVAIL(ptp) \
+do { \
+ spin_lock_bh(&(ptp)->ptp_tx_lock); \
+ (ptp)->tx_avail++; \
+ spin_unlock_bh(&(ptp)->ptp_tx_lock); \
+} while (0)
+
int bnxt_ptp_parse(struct sk_buff *skb, u16 *seq_id, u16 *hdr_off);
void bnxt_ptp_update_current_time(struct bnxt *bp);
void bnxt_ptp_pps_event(struct bnxt *bp, u32 data1, u32 data2);
@@ -154,8 +171,11 @@ int bnxt_ptp_cfg_tstamp_filters(struct bnxt *bp);
void bnxt_ptp_reapply_pps(struct bnxt *bp);
int bnxt_hwtstamp_set(struct net_device *dev, struct ifreq *ifr);
int bnxt_hwtstamp_get(struct net_device *dev, struct ifreq *ifr);
-int bnxt_get_tx_ts_p5(struct bnxt *bp, struct sk_buff *skb);
+int bnxt_ptp_get_txts_prod(struct bnxt_ptp_cfg *ptp, u16 *prod);
+void bnxt_get_tx_ts_p5(struct bnxt *bp, struct sk_buff *skb, u16 prod);
int bnxt_get_rx_ts_p5(struct bnxt *bp, u64 *ts, u32 pkt_ts);
+void bnxt_tx_ts_cmp(struct bnxt *bp, struct bnxt_napi *bnapi,
+ struct tx_ts_cmp *tscmp);
void bnxt_ptp_rtc_timecounter_init(struct bnxt_ptp_cfg *ptp, u64 ns);
int bnxt_ptp_init_rtc(struct bnxt *bp, bool phc_cfg);
int bnxt_ptp_init(struct bnxt *bp, bool phc_cfg);
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