diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/701-net-0025-sdk_dpaa-ls1043a-errata-do-not-recycle-the-realigned.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/701-net-0025-sdk_dpaa-ls1043a-errata-do-not-recycle-the-realigned.patch | 61 |
1 files changed, 0 insertions, 61 deletions
diff --git a/target/linux/layerscape/patches-5.4/701-net-0025-sdk_dpaa-ls1043a-errata-do-not-recycle-the-realigned.patch b/target/linux/layerscape/patches-5.4/701-net-0025-sdk_dpaa-ls1043a-errata-do-not-recycle-the-realigned.patch deleted file mode 100644 index 4030385be5..0000000000 --- a/target/linux/layerscape/patches-5.4/701-net-0025-sdk_dpaa-ls1043a-errata-do-not-recycle-the-realigned.patch +++ /dev/null @@ -1,61 +0,0 @@ -From e8c0a77a831843a66b3ac0048aa6c76bc39b0332 Mon Sep 17 00:00:00 2001 -From: Camelia Groza <camelia.groza@nxp.com> -Date: Mon, 4 Sep 2017 14:03:01 +0300 -Subject: [PATCH] sdk_dpaa: ls1043a errata: do not recycle the realigned - buffers - -Signed-off-by: Camelia Groza <camelia.groza@nxp.com> ---- - drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth.h | 10 ++++++---- - drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c | 9 +++++++++ - 2 files changed, 15 insertions(+), 4 deletions(-) - ---- a/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth.h -+++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth.h -@@ -680,15 +680,17 @@ static inline void _dpa_bp_free_pf(void - put_page(virt_to_head_page(addr)); - } - --/* TODO: LS1043A SoC has a HW issue regarding FMan DMA transactions; The issue -- * manifests itself at high traffic rates when frames exceed 4K memory -- * boundaries; For the moment, we use a SW workaround to avoid frames larger -- * than 4K or that exceed 4K alignments. -+/* LS1043A SoC has a HW issue regarding FMan DMA transactions; The issue -+ * manifests itself at high traffic rates when frames cross 4K memory -+ * boundaries or when they are not aligned to 16 bytes; For the moment, we -+ * use a SW workaround to avoid frames larger than 4K or that exceed 4K -+ * alignments and to realign the frames to 16 bytes. - */ - - #ifndef CONFIG_PPC - extern bool dpaa_errata_a010022; /* SoC affected by A010022 errata */ - -+#define NONREC_MARK 0x01 - #define HAS_DMA_ISSUE(start, size) \ - (((u64)(start) + (size)) > (((u64)(start) + 0x1000) & ~0xFFF)) - #define BOUNDARY_4K(start, size) (((u64)(start) + (u64)(size)) & ~0xFFF) ---- a/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c -+++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c -@@ -302,6 +302,12 @@ EXPORT_SYMBOL(_dpa_cleanup_tx_fd); - #ifndef CONFIG_FSL_DPAA_TS - bool dpa_skb_is_recyclable(struct sk_buff *skb) - { -+#ifndef CONFIG_PPC -+ /* Do no recycle skbs realigned by the errata workaround */ -+ if (unlikely(dpaa_errata_a010022) && skb->mark == NONREC_MARK) -+ return false; -+#endif -+ - /* No recycling possible if skb buffer is kmalloc'ed */ - if (skb->head_frag == 0) - return false; -@@ -838,6 +844,9 @@ static struct sk_buff *a010022_realign_s - skb_set_network_header(nskb, net_offset); - skb_set_transport_header(nskb, trans_offset); - -+ /* We don't want the buffer to be recycled so we mark it accordingly */ -+ nskb->mark = NONREC_MARK; -+ - dev_kfree_skb(skb); - return nskb; - |