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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
@@ -629,10 +629,10 @@ 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))
@@ -640,18 +640,18 @@ 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)]);
}
@@ -823,7 +823,7 @@ 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;
@@ -860,8 +860,8 @@ 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;
}
@@ -871,17 +871,17 @@ 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);
}
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