diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/802-can-0018-can-flexcan-use-struct-canfd_frame-for-CAN-classic-f.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/802-can-0018-can-flexcan-use-struct-canfd_frame-for-CAN-classic-f.patch | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-5.4/802-can-0018-can-flexcan-use-struct-canfd_frame-for-CAN-classic-f.patch b/target/linux/layerscape/patches-5.4/802-can-0018-can-flexcan-use-struct-canfd_frame-for-CAN-classic-f.patch new file mode 100644 index 0000000000..968bc11d51 --- /dev/null +++ b/target/linux/layerscape/patches-5.4/802-can-0018-can-flexcan-use-struct-canfd_frame-for-CAN-classic-f.patch @@ -0,0 +1,115 @@ +From 03374d551c7fbb1b1ecc115df4f374bc5027b1f9 Mon Sep 17 00:00:00 2001 +From: Joakim Zhang <qiangqing.zhang@nxp.com> +Date: Fri, 12 Jul 2019 08:02:41 +0000 +Subject: [PATCH] can: flexcan: use struct canfd_frame for CAN classic frame + +This patch prepares for CAN FD mode, using struct canfd_frame can both +for classic format frame and fd format frame. + +Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com> +Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> +--- + drivers/net/can/flexcan.c | 34 +++++++++++++++++----------------- + drivers/net/can/rx-offload.c | 4 ++-- + 2 files changed, 19 insertions(+), 19 deletions(-) + +--- a/drivers/net/can/flexcan.c ++++ b/drivers/net/can/flexcan.c +@@ -628,10 +628,10 @@ static int flexcan_get_berr_counter(cons + static netdev_tx_t flexcan_start_xmit(struct sk_buff *skb, struct net_device *dev) + { + const struct flexcan_priv *priv = netdev_priv(dev); +- struct can_frame *cf = (struct can_frame *)skb->data; ++ struct canfd_frame *cfd = (struct canfd_frame *)skb->data; + u32 can_id; + u32 data; +- u32 ctrl = FLEXCAN_MB_CODE_TX_DATA | (cf->can_dlc << 16); ++ u32 ctrl = FLEXCAN_MB_CODE_TX_DATA | (cfd->len << 16); + int i; + + if (can_dropped_invalid_skb(dev, skb)) +@@ -639,18 +639,18 @@ static netdev_tx_t flexcan_start_xmit(st + + netif_stop_queue(dev); + +- if (cf->can_id & CAN_EFF_FLAG) { +- can_id = cf->can_id & CAN_EFF_MASK; ++ if (cfd->can_id & CAN_EFF_FLAG) { ++ can_id = cfd->can_id & CAN_EFF_MASK; + ctrl |= FLEXCAN_MB_CNT_IDE | FLEXCAN_MB_CNT_SRR; + } else { +- can_id = (cf->can_id & CAN_SFF_MASK) << 18; ++ can_id = (cfd->can_id & CAN_SFF_MASK) << 18; + } + +- if (cf->can_id & CAN_RTR_FLAG) ++ if (cfd->can_id & CAN_RTR_FLAG) + ctrl |= FLEXCAN_MB_CNT_RTR; + +- for (i = 0; i < cf->can_dlc; i += sizeof(u32)) { +- data = be32_to_cpup((__be32 *)&cf->data[i]); ++ for (i = 0; i < cfd->len; i += sizeof(u32)) { ++ data = be32_to_cpup((__be32 *)&cfd->data[i]); + priv->write(data, &priv->tx_mb->data[i / sizeof(u32)]); + } + +@@ -822,7 +822,7 @@ static struct sk_buff *flexcan_mailbox_r + struct flexcan_regs __iomem *regs = priv->regs; + struct flexcan_mb __iomem *mb; + struct sk_buff *skb; +- struct can_frame *cf; ++ struct canfd_frame *cfd; + u32 reg_ctrl, reg_id, reg_iflag1; + int i; + +@@ -859,8 +859,8 @@ static struct sk_buff *flexcan_mailbox_r + reg_ctrl = priv->read(&mb->can_ctrl); + } + +- skb = alloc_can_skb(offload->dev, &cf); +- if (!skb) { ++ skb = alloc_can_skb(offload->dev, (struct can_frame **)&cfd); ++ if (unlikely(!skb)) { + skb = ERR_PTR(-ENOMEM); + goto mark_as_read; + } +@@ -870,17 +870,17 @@ static struct sk_buff *flexcan_mailbox_r + + reg_id = priv->read(&mb->can_id); + if (reg_ctrl & FLEXCAN_MB_CNT_IDE) +- cf->can_id = ((reg_id >> 0) & CAN_EFF_MASK) | CAN_EFF_FLAG; ++ cfd->can_id = ((reg_id >> 0) & CAN_EFF_MASK) | CAN_EFF_FLAG; + else +- cf->can_id = (reg_id >> 18) & CAN_SFF_MASK; ++ cfd->can_id = (reg_id >> 18) & CAN_SFF_MASK; + + if (reg_ctrl & FLEXCAN_MB_CNT_RTR) +- cf->can_id |= CAN_RTR_FLAG; +- cf->can_dlc = get_can_dlc((reg_ctrl >> 16) & 0xf); ++ cfd->can_id |= CAN_RTR_FLAG; ++ cfd->len = get_can_dlc((reg_ctrl >> 16) & 0xf); + +- for (i = 0; i < cf->can_dlc; i += sizeof(u32)) { ++ for (i = 0; i < cfd->len; i += sizeof(u32)) { + __be32 data = cpu_to_be32(priv->read(&mb->data[i / sizeof(u32)])); +- *(__be32 *)(cf->data + i) = data; ++ *(__be32 *)(cfd->data + i) = data; + } + + mark_as_read: +--- a/drivers/net/can/rx-offload.c ++++ b/drivers/net/can/rx-offload.c +@@ -51,11 +51,11 @@ static int can_rx_offload_napi_poll(stru + + while ((work_done < quota) && + (skb = skb_dequeue(&offload->skb_queue))) { +- struct can_frame *cf = (struct can_frame *)skb->data; ++ struct canfd_frame *cfd = (struct canfd_frame *)skb->data; + + work_done++; + stats->rx_packets++; +- stats->rx_bytes += cf->can_dlc; ++ stats->rx_bytes += cfd->len; + netif_receive_skb(skb); + } + |