diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/701-net-0075-sdk_dpaa-reserve-256-bytes-for-the-SGT-on-TX.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/701-net-0075-sdk_dpaa-reserve-256-bytes-for-the-SGT-on-TX.patch | 57 |
1 files changed, 0 insertions, 57 deletions
diff --git a/target/linux/layerscape/patches-5.4/701-net-0075-sdk_dpaa-reserve-256-bytes-for-the-SGT-on-TX.patch b/target/linux/layerscape/patches-5.4/701-net-0075-sdk_dpaa-reserve-256-bytes-for-the-SGT-on-TX.patch deleted file mode 100644 index 2056276472..0000000000 --- a/target/linux/layerscape/patches-5.4/701-net-0075-sdk_dpaa-reserve-256-bytes-for-the-SGT-on-TX.patch +++ /dev/null @@ -1,57 +0,0 @@ -From 29757ae2e4a0e8e1e816c9eeef59121908320669 Mon Sep 17 00:00:00 2001 -From: Camelia Groza <camelia.groza@nxp.com> -Date: Wed, 20 Jun 2018 18:00:42 +0300 -Subject: [PATCH] sdk_dpaa: reserve 256 bytes for the SGT on TX - -The FMan reads 256 bytes from the start of the SGT regardless of its -size. We reserve the same amount of memory on TX to access. - -Signed-off-by: Camelia Groza <camelia.groza@nxp.com> ---- - drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_common.h | 6 ++++-- - drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c | 10 +++++++--- - 2 files changed, 11 insertions(+), 5 deletions(-) - ---- a/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_common.h -+++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_common.h -@@ -55,10 +55,12 @@ - fm_set_##type##_port_params(port, ¶m); \ - } - -+/* The SGT needs to be 256 bytes long. Even if the table has only one entry, -+ * the FMan will read 256 bytes from its start. -+ */ -+#define DPA_SGT_SIZE 256 - #define DPA_SGT_MAX_ENTRIES 16 /* maximum number of entries in SG Table */ - --#define DPA_SGT_ENTRIES_THRESHOLD DPA_SGT_MAX_ENTRIES -- - #define DPA_BUFF_RELEASE_MAX 8 /* maximum number of buffers released at once */ - - #define DPA_RX_PCD_HI_PRIO_FQ_INIT_FAIL(dpa_fq, _errno) \ ---- a/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c -+++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c -@@ -246,8 +246,8 @@ struct sk_buff *_dpa_cleanup_tx_fd(const - - if (unlikely(fd->format == qm_fd_sg)) { - nr_frags = skb_shinfo(skb)->nr_frags; -- dma_unmap_single(dpa_bp->dev, addr, dpa_fd_offset(fd) + -- sizeof(struct qm_sg_entry) * (1 + nr_frags), -+ dma_unmap_single(dpa_bp->dev, addr, -+ dpa_fd_offset(fd) + DPA_SGT_SIZE, - dma_dir); - - /* The sgt buffer has been allocated with netdev_alloc_frag(), -@@ -896,7 +896,11 @@ int __hot skb_to_sg_fd(struct dpa_priv_s - nr_frags = skb_shinfo(skb)->nr_frags; - fd->format = qm_fd_sg; - -- sgt_size = sizeof(struct qm_sg_entry) * (1 + nr_frags); -+ /* The FMan reads 256 bytes from the start of the SGT regardless of -+ * its size. In accordance, we reserve the same amount of memory as -+ * well. -+ */ -+ sgt_size = DPA_SGT_SIZE; - - /* Get a page frag to store the SGTable, or a full page if the errata - * is in place and we need to avoid crossing a 4k boundary. |