This is a note to let you know that I've just added the patch titled
net: macb: Enable PTP unicast
to the 6.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-macb-enable-ptp-unicast.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit dd8368a78e8093c1b864b12da308b3bd8f32d1ba
Author: Harini Katakam <harini.katakam@xxxxxxxxxx>
Date: Tue Apr 11 18:07:11 2023 +0530
net: macb: Enable PTP unicast
[ Upstream commit ee4e92c26c60b7344b7261035683a37da5a6119b ]
Enable transmission and reception of PTP unicast packets by
updating PTP unicast config bit and setting current HW mac
address as allowed address in PTP unicast filter registers.
Signed-off-by: Harini Katakam <harini.katakam@xxxxxxxxxx>
Signed-off-by: Michal Simek <michal.simek@xxxxxxxxxx>
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xxxxxxxxxx>
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Stable-dep-of: 403f0e771457 ("net: macb: fix sleep inside spinlock")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/cadence/macb.h b/drivers/net/ethernet/cadence/macb.h
index 9c410f93a1039..1aa578c1ca4ad 100644
--- a/drivers/net/ethernet/cadence/macb.h
+++ b/drivers/net/ethernet/cadence/macb.h
@@ -95,6 +95,8 @@
#define GEM_SA4B 0x00A0 /* Specific4 Bottom */
#define GEM_SA4T 0x00A4 /* Specific4 Top */
#define GEM_WOL 0x00b8 /* Wake on LAN */
+#define GEM_RXPTPUNI 0x00D4 /* PTP RX Unicast address */
+#define GEM_TXPTPUNI 0x00D8 /* PTP TX Unicast address */
#define GEM_EFTSH 0x00e8 /* PTP Event Frame Transmitted Seconds Register 47:32 */
#define GEM_EFRSH 0x00ec /* PTP Event Frame Received Seconds Register 47:32 */
#define GEM_PEFTSH 0x00f0 /* PTP Peer Event Frame Transmitted Seconds Register 47:32 */
@@ -245,6 +247,8 @@
#define MACB_TZQ_OFFSET 12 /* Transmit zero quantum pause frame */
#define MACB_TZQ_SIZE 1
#define MACB_SRTSM_OFFSET 15 /* Store Receive Timestamp to Memory */
+#define MACB_PTPUNI_OFFSET 20 /* PTP Unicast packet enable */
+#define MACB_PTPUNI_SIZE 1
#define MACB_OSSMODE_OFFSET 24 /* Enable One Step Synchro Mode */
#define MACB_OSSMODE_SIZE 1
#define MACB_MIIONRGMII_OFFSET 28 /* MII Usage on RGMII Interface */
diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c
index 5fb991835078a..9470e895591e5 100644
--- a/drivers/net/ethernet/cadence/macb_main.c
+++ b/drivers/net/ethernet/cadence/macb_main.c
@@ -288,6 +288,11 @@ static void macb_set_hwaddr(struct macb *bp)
top = cpu_to_le16(*((u16 *)(bp->dev->dev_addr + 4)));
macb_or_gem_writel(bp, SA1T, top);
+ if (gem_has_ptp(bp)) {
+ gem_writel(bp, RXPTPUNI, bottom);
+ gem_writel(bp, TXPTPUNI, bottom);
+ }
+
/* Clear unused address register sets */
macb_or_gem_writel(bp, SA2B, 0);
macb_or_gem_writel(bp, SA2T, 0);
@@ -721,8 +726,12 @@ static void macb_mac_link_up(struct phylink_config *config,
spin_unlock_irqrestore(&bp->lock, flags);
- /* Enable Rx and Tx */
- macb_writel(bp, NCR, macb_readl(bp, NCR) | MACB_BIT(RE) | MACB_BIT(TE));
+ /* Enable Rx and Tx; Enable PTP unicast */
+ ctrl = macb_readl(bp, NCR);
+ if (gem_has_ptp(bp))
+ ctrl |= MACB_BIT(PTPUNI);
+
+ macb_writel(bp, NCR, ctrl | MACB_BIT(RE) | MACB_BIT(TE));
netif_tx_wake_all_queues(ndev);
}
