Hello Sascha, On 04.01.24 13:18, Sascha Hauer wrote: > On Thu, Jan 04, 2024 at 12:22:41PM +0100, Sascha Hauer wrote: >> This adds support for the fsl_enetc network controller found on several >> Layerscape SoCs. The code is originally from U-Boot-2023.10-rc1. >> >> Signed-off-by: Sascha Hauer <s.ha...@pengutronix.de> >> --- >> >> Notes: >> Changes since v1: >> >> - Use get_unaligned to access unaligned pointers >> - use physical address returned by dma_alloc_coherent() >> - implement struct pci_driver::remove hook >> - do not printf in poller function >> - use write[lwq] to access rx/tx rings to avoid dmb() > > Actually this last part is missing, here it is: > > ---------------------------------8<--------------------------- > > From 3b312b7d501be3b0049de27582a26b19fdaf84e1 Mon Sep 17 00:00:00 2001 > From: Sascha Hauer <s.ha...@pengutronix.de> > Date: Wed, 3 Jan 2024 20:55:39 +0100 > Subject: [PATCH] fixup! net: Add fsl_enetc network driver support > > --- > drivers/net/fsl_enetc.c | 19 +++++++------------ > 1 file changed, 7 insertions(+), 12 deletions(-) > > diff --git a/drivers/net/fsl_enetc.c b/drivers/net/fsl_enetc.c > index eb90c526bb..07e9a6b7c8 100644 > --- a/drivers/net/fsl_enetc.c > +++ b/drivers/net/fsl_enetc.c > @@ -454,13 +454,10 @@ static int enetc_send(struct eth_device *edev, void > *packet, int length) > dma = dma_map_single(priv->dev, packet, length, DMA_TO_DEVICE); > > /* prepare Tx BD */ > - memset(&priv->enetc_txbd[pi], 0x0, sizeof(struct enetc_tx_bd)); > - priv->enetc_txbd[pi].addr = cpu_to_le64(dma); > - priv->enetc_txbd[pi].buf_len = cpu_to_le16(length); > - priv->enetc_txbd[pi].frm_len = cpu_to_le16(length); > - priv->enetc_txbd[pi].flags = cpu_to_le16(ENETC_TXBD_FLAGS_F); > - > - dmb(); > + writeq(cpu_to_le64(dma), &priv->enetc_txbd[pi].addr); > + writew(cpu_to_le16(length), &priv->enetc_txbd[pi].buf_len); > + writew(cpu_to_le16(length), &priv->enetc_txbd[pi].frm_len); > + writew(cpu_to_le16(ENETC_TXBD_FLAGS_F), &priv->enetc_txbd[pi].flags);
The cpu_to_le* can be dropped because writew/writeq always do conversion to little endian. > > /* send frame: increment producer index */ > pi = (pi + 1) % txr->bd_count; > @@ -508,9 +505,7 @@ static int enetc_recv(struct eth_device *edev) > if (!ENETC_RXBD_STATUS_R(status)) > return 0; > > - dmb(); > - > - len = le16_to_cpu(priv->enetc_rxbd[pi].r.buf_len); > + len = le16_to_cpu(readw(&priv->enetc_rxbd[pi].r.buf_len)); Same. > > dev_dbg(&edev->dev, "RxBD[%d]: len=%d err=%d pkt=0x%p\n", pi, len, > ENETC_RXBD_STATUS_ERRORS(status), pkg); > @@ -520,8 +515,8 @@ static int enetc_recv(struct eth_device *edev) > dma_sync_single_for_device(priv->dev, priv->rx_pkg_phys[pi], PKTSIZE, > DMA_FROM_DEVICE); > > /* BD clean up and advance to next in ring */ > - memset(&priv->enetc_rxbd[pi], 0, sizeof(union enetc_rx_bd)); > - priv->enetc_rxbd[pi].w.addr = priv->rx_pkg_phys[pi]; > + memset_io(&priv->enetc_rxbd[pi], 0, sizeof(union enetc_rx_bd)); > + writeq(priv->rx_pkg_phys[pi], &priv->enetc_rxbd[pi].w.addr); > rxr->next_prod_idx = (pi + 1) % rxr->bd_count; > ci = (ci + 1) % rxr->bd_count; > rxr->next_cons_idx = ci; LGTM with changes applied: Reviewed-by: Ahmad Fatoum <a.fat...@pengutronix.de> -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
