From 5f99925632b482a80998779c703a3bf89829bb5d Mon Sep 17 00:00:00 2001 From: "Alex Maftei (amaftei)" Date: Wed, 8 Jan 2020 16:13:28 +0000 Subject: sfc: move event queue management code Signed-off-by: Alexandru-Mihai Maftei Signed-off-by: David S. Miller --- drivers/net/ethernet/sfc/efx.c | 92 ------------------------------------------ 1 file changed, 92 deletions(-) (limited to 'drivers/net/ethernet/sfc/efx.c') diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c index 8ac299373ee5..4bce5c739974 100644 --- a/drivers/net/ethernet/sfc/efx.c +++ b/drivers/net/ethernet/sfc/efx.c @@ -128,98 +128,6 @@ static int efx_xdp_xmit(struct net_device *dev, int n, struct xdp_frame **xdpfs, ASSERT_RTNL(); \ } while (0) -/************************************************************************** - * - * Event queue processing - * - *************************************************************************/ - -/* Create event queue - * Event queue memory allocations are done only once. If the channel - * is reset, the memory buffer will be reused; this guards against - * errors during channel reset and also simplifies interrupt handling. - */ -int efx_probe_eventq(struct efx_channel *channel) -{ - struct efx_nic *efx = channel->efx; - unsigned long entries; - - netif_dbg(efx, probe, efx->net_dev, - "chan %d create event queue\n", channel->channel); - - /* Build an event queue with room for one event per tx and rx buffer, - * plus some extra for link state events and MCDI completions. */ - entries = roundup_pow_of_two(efx->rxq_entries + efx->txq_entries + 128); - EFX_WARN_ON_PARANOID(entries > EFX_MAX_EVQ_SIZE); - channel->eventq_mask = max(entries, EFX_MIN_EVQ_SIZE) - 1; - - return efx_nic_probe_eventq(channel); -} - -/* Prepare channel's event queue */ -int efx_init_eventq(struct efx_channel *channel) -{ - struct efx_nic *efx = channel->efx; - int rc; - - EFX_WARN_ON_PARANOID(channel->eventq_init); - - netif_dbg(efx, drv, efx->net_dev, - "chan %d init event queue\n", channel->channel); - - rc = efx_nic_init_eventq(channel); - if (rc == 0) { - efx->type->push_irq_moderation(channel); - channel->eventq_read_ptr = 0; - channel->eventq_init = true; - } - return rc; -} - -/* Enable event queue processing and NAPI */ -void efx_start_eventq(struct efx_channel *channel) -{ - netif_dbg(channel->efx, ifup, channel->efx->net_dev, - "chan %d start event queue\n", channel->channel); - - /* Make sure the NAPI handler sees the enabled flag set */ - channel->enabled = true; - smp_wmb(); - - napi_enable(&channel->napi_str); - efx_nic_eventq_read_ack(channel); -} - -/* Disable event queue processing and NAPI */ -void efx_stop_eventq(struct efx_channel *channel) -{ - if (!channel->enabled) - return; - - napi_disable(&channel->napi_str); - channel->enabled = false; -} - -void efx_fini_eventq(struct efx_channel *channel) -{ - if (!channel->eventq_init) - return; - - netif_dbg(channel->efx, drv, channel->efx->net_dev, - "chan %d fini event queue\n", channel->channel); - - efx_nic_fini_eventq(channel); - channel->eventq_init = false; -} - -void efx_remove_eventq(struct efx_channel *channel) -{ - netif_dbg(channel->efx, drv, channel->efx->net_dev, - "chan %d remove event queue\n", channel->channel); - - efx_nic_remove_eventq(channel); -} - /************************************************************************** * * Channel handling -- cgit