diff options
| -rw-r--r-- | drivers/net/ethernet/sfc/ef10.c | 12 | ||||
| -rw-r--r-- | drivers/net/ethernet/sfc/efx.c | 11 | ||||
| -rw-r--r-- | drivers/net/ethernet/sfc/farch.c | 9 | ||||
| -rw-r--r-- | drivers/net/ethernet/sfc/net_driver.h | 12 | ||||
| -rw-r--r-- | drivers/net/ethernet/sfc/ptp.c | 20 | ||||
| -rw-r--r-- | drivers/net/ethernet/sfc/tx.c | 3 |
6 files changed, 54 insertions, 13 deletions
diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c index c31d65eb8ca6..b460e06880e6 100644 --- a/drivers/net/ethernet/sfc/ef10.c +++ b/drivers/net/ethernet/sfc/ef10.c @@ -951,6 +951,11 @@ static int efx_ef10_link_piobufs(struct efx_nic *efx) /* Link a buffer to each TX queue */ efx_for_each_channel(channel, efx) { + /* Extra channels, even those with TXQs (PTP), do not require + * PIO resources. + */ + if (!channel->type->want_pio) + continue; efx_for_each_channel_tx_queue(tx_queue, channel) { /* We assign the PIO buffers to queues in * reverse order to allow for the following @@ -1298,7 +1303,9 @@ static int efx_ef10_dimension_resources(struct efx_nic *efx) void __iomem *membase; int rc; - channel_vis = max(efx->n_channels, efx->n_tx_channels * EFX_TXQ_TYPES); + channel_vis = max(efx->n_channels, + (efx->n_tx_channels + efx->n_extra_tx_channels) * + EFX_TXQ_TYPES); #ifdef EFX_USE_PIO /* Try to allocate PIO buffers if wanted and if the full @@ -6259,7 +6266,8 @@ static int efx_ef10_ptp_set_ts_sync_events(struct efx_nic *efx, bool en, efx_ef10_rx_enable_timestamping : efx_ef10_rx_disable_timestamping; - efx_for_each_channel(channel, efx) { + channel = efx_ptp_channel(efx); + if (channel) { int rc = set(channel, temp); if (en && rc != 0) { efx_ef10_ptp_set_ts_sync_events(efx, false, temp); diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c index 12f0abc30cb1..456866b05641 100644 --- a/drivers/net/ethernet/sfc/efx.c +++ b/drivers/net/ethernet/sfc/efx.c @@ -896,12 +896,20 @@ void efx_schedule_slow_fill(struct efx_rx_queue *rx_queue) mod_timer(&rx_queue->slow_fill, jiffies + msecs_to_jiffies(100)); } +bool efx_default_channel_want_txqs(struct efx_channel *channel) +{ + return channel->channel - channel->efx->tx_channel_offset < + channel->efx->n_tx_channels; +} + static const struct efx_channel_type efx_default_channel_type = { .pre_probe = efx_channel_dummy_op_int, .post_remove = efx_channel_dummy_op_void, .get_name = efx_get_channel_name, .copy = efx_copy_channel, + .want_txqs = efx_default_channel_want_txqs, .keep_eventq = false, + .want_pio = true, }; int efx_channel_dummy_op_int(struct efx_channel *channel) @@ -1501,6 +1509,7 @@ static int efx_probe_interrupts(struct efx_nic *efx) } /* Assign extra channels if possible */ + efx->n_extra_tx_channels = 0; j = efx->n_channels; for (i = 0; i < EFX_MAX_EXTRA_CHANNELS; i++) { if (!efx->extra_channel_type[i]) @@ -1512,6 +1521,8 @@ static int efx_probe_interrupts(struct efx_nic *efx) --j; efx_get_channel(efx, j)->type = efx->extra_channel_type[i]; + if (efx_channel_has_tx_queues(efx_get_channel(efx, j))) + efx->n_extra_tx_channels++; } } diff --git a/drivers/net/ethernet/sfc/farch.c b/drivers/net/ethernet/sfc/farch.c index ca79ac6d0ac3..266b9bee1f3a 100644 --- a/drivers/net/ethernet/sfc/farch.c +++ b/drivers/net/ethernet/sfc/farch.c @@ -1085,7 +1085,7 @@ efx_farch_handle_tx_flush_done(struct efx_nic *efx, efx_qword_t *event) int qid; qid = EFX_QWORD_FIELD(*event, FSF_AZ_DRIVER_EV_SUBDATA); - if (qid < EFX_TXQ_TYPES * efx->n_tx_channels) { + if (qid < EFX_TXQ_TYPES * (efx->n_tx_channels + efx->n_extra_tx_channels)) { tx_queue = efx_get_tx_queue(efx, qid / EFX_TXQ_TYPES, qid % EFX_TXQ_TYPES); if (atomic_cmpxchg(&tx_queue->flush_outstanding, 1, 0)) { @@ -1669,20 +1669,21 @@ void efx_farch_rx_pull_indir_table(struct efx_nic *efx) */ void efx_farch_dimension_resources(struct efx_nic *efx, unsigned sram_lim_qw) { - unsigned vi_count, buftbl_min; + unsigned vi_count, buftbl_min, total_tx_channels; #ifdef CONFIG_SFC_SRIOV struct siena_nic_data *nic_data = efx->nic_data; #endif + total_tx_channels = efx->n_tx_channels + efx->n_extra_tx_channels; /* Account for the buffer table entries backing the datapath channels * and the descriptor caches for those channels. */ buftbl_min = ((efx->n_rx_channels * EFX_MAX_DMAQ_SIZE + - efx->n_tx_channels * EFX_TXQ_TYPES * EFX_MAX_DMAQ_SIZE + + total_tx_channels * EFX_TXQ_TYPES * EFX_MAX_DMAQ_SIZE + efx->n_channels * EFX_MAX_EVQ_SIZE) * sizeof(efx_qword_t) / EFX_BUF_SIZE); - vi_count = max(efx->n_channels, efx->n_tx_channels * EFX_TXQ_TYPES); + vi_count = max(efx->n_channels, total_tx_channels * EFX_TXQ_TYPES); #ifdef CONFIG_SFC_SRIOV if (efx->type->sriov_wanted) { diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h index 6b9935f65cfa..d20a8660ee48 100644 --- a/drivers/net/ethernet/sfc/net_driver.h +++ b/drivers/net/ethernet/sfc/net_driver.h @@ -531,8 +531,12 @@ struct efx_msi_context { * @copy: Copy the channel state prior to reallocation. May be %NULL if * reallocation is not supported. * @receive_skb: Handle an skb ready to be passed to netif_receive_skb() + * @want_txqs: Determine whether this channel should have TX queues + * created. If %NULL, TX queues are not created. * @keep_eventq: Flag for whether event queue should be kept initialised * while the device is stopped + * @want_pio: Flag for whether PIO buffers should be linked to this + * channel's TX queues. */ struct efx_channel_type { void (*handle_no_channel)(struct efx_nic *); @@ -541,7 +545,9 @@ struct efx_channel_type { void (*get_name)(struct efx_channel *, char *buf, size_t len); struct efx_channel *(*copy)(const struct efx_channel *); bool (*receive_skb)(struct efx_channel *, struct sk_buff *); + bool (*want_txqs)(struct efx_channel *); bool keep_eventq; + bool want_pio; }; enum efx_led_mode { @@ -744,6 +750,7 @@ struct vfdi_status; * @n_channels: Number of channels in use * @n_rx_channels: Number of channels used for RX (= number of RX queues) * @n_tx_channels: Number of channels used for TX + * @n_extra_tx_channels: Number of extra channels with TX queues * @rx_ip_align: RX DMA address offset to have IP header aligned in * in accordance with NET_IP_ALIGN * @rx_dma_len: Current maximum RX DMA length @@ -890,6 +897,7 @@ struct efx_nic { unsigned rss_spread; unsigned tx_channel_offset; unsigned n_tx_channels; + unsigned n_extra_tx_channels; unsigned int rx_ip_align; unsigned int rx_dma_len; unsigned int rx_buffer_order; @@ -1372,8 +1380,8 @@ efx_get_tx_queue(struct efx_nic *efx, unsigned index, unsigned type) static inline bool efx_channel_has_tx_queues(struct efx_channel *channel) { - return channel->channel - channel->efx->tx_channel_offset < - channel->efx->n_tx_channels; + return channel->type && channel->type->want_txqs && + channel->type->want_txqs(channel); } static inline struct efx_tx_queue * diff --git a/drivers/net/ethernet/sfc/ptp.c b/drivers/net/ethernet/sfc/ptp.c index 0d0160f15c35..87a72f37141b 100644 --- a/drivers/net/ethernet/sfc/ptp.c +++ b/drivers/net/ethernet/sfc/ptp.c @@ -341,6 +341,14 @@ bool efx_ptp_use_mac_tx_timestamps(struct efx_nic *efx) )); } +/* PTP 'extra' channel is still a traffic channel, but we only create TX queues + * if PTP uses MAC TX timestamps, not if PTP uses the MC directly to transmit. + */ +bool efx_ptp_want_txqs(struct efx_channel *channel) +{ + return efx_ptp_use_mac_tx_timestamps(channel->efx); +} + #define PTP_SW_STAT(ext_name, field_name) \ { #ext_name, 0, offsetof(struct efx_ptp_data, field_name) } #define PTP_MC_STAT(ext_name, mcdi_name) \ @@ -1321,10 +1329,13 @@ int efx_ptp_probe(struct efx_nic *efx, struct efx_channel *channel) goto fail2; } - if (efx_ptp_use_mac_tx_timestamps(efx)) + if (efx_ptp_use_mac_tx_timestamps(efx)) { ptp->xmit_skb = efx_ptp_xmit_skb_queue; - else - ptp->xmit_skb = efx_ptp_xmit_skb_mc; + /* Request sync events on this channel. */ + channel->sync_events_state = SYNC_EVENTS_QUIESCENT; + } else { + ptp->xmit_skb = efx_ptp_xmit_skb_mc; + } INIT_WORK(&ptp->work, efx_ptp_worker); ptp->config.flags = 0; @@ -2009,13 +2020,14 @@ static int efx_phc_enable(struct ptp_clock_info *ptp, return 0; } -static const struct efx_channel_type efx_ptp_channel_type = { +const struct efx_channel_type efx_ptp_channel_type = { .handle_no_channel = efx_ptp_handle_no_channel, .pre_probe = efx_ptp_probe_channel, .post_remove = efx_ptp_remove_channel, .get_name = efx_ptp_get_channel_name, /* no copy operation; there is no need to reallocate this channel */ .receive_skb = efx_ptp_rx, + .want_txqs = efx_ptp_want_txqs, .keep_eventq = false, }; diff --git a/drivers/net/ethernet/sfc/tx.c b/drivers/net/ethernet/sfc/tx.c index f86a0a900f2f..cece961f2e82 100644 --- a/drivers/net/ethernet/sfc/tx.c +++ b/drivers/net/ethernet/sfc/tx.c @@ -842,7 +842,8 @@ void efx_init_tx_queue(struct efx_tx_queue *tx_queue) tx_queue->old_read_count = 0; tx_queue->empty_read_count = 0 | EFX_EMPTY_COUNT_VALID; tx_queue->xmit_more_available = false; - tx_queue->timestamping = false; + tx_queue->timestamping = (efx_ptp_use_mac_tx_timestamps(efx) && + tx_queue->channel == efx_ptp_channel(efx)); tx_queue->completed_desc_ptr = tx_queue->ptr_mask; tx_queue->completed_timestamp_major = 0; tx_queue->completed_timestamp_minor = 0; |