bnx2x: Add timestamping and PTP hardware clock support

This adds a PHC to the bnx2x driver. Driver supports timestamping send/receive
PTP packets, as well as adjusting the on-chip clock.

The driver has been tested with linuxptp project.

Signed-off-by: Michal Kalderon <Michal.Kalderon@qlogic.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 27 insertions, 0 deletions

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
index d777fae86988..a0b06a07cbde 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
@@ -20,6 +20,10 @@
 #include <linux/types.h>
 #include <linux/pci_regs.h>
 
+#include <linux/ptp_clock_kernel.h>
+#include <linux/net_tstamp.h>
+#include <linux/clocksource.h>
+
 /* compilation time flags */
 
 /* define this to make the driver freeze on error to allow getting debug info
@@ -70,6 +74,7 @@ enum bnx2x_int_mode {
 #define BNX2X_MSG_SP                    0x0100000 /* was: NETIF_MSG_INTR */
 #define BNX2X_MSG_FP                    0x0200000 /* was: NETIF_MSG_INTR */
 #define BNX2X_MSG_IOV                   0x0800000
+#define BNX2X_MSG_PTP                   0x1000000
 #define BNX2X_MSG_IDLE                  0x2000000 /* used for idle check*/
 #define BNX2X_MSG_ETHTOOL               0x4000000
 #define BNX2X_MSG_DCB                   0x8000000
@@ -1591,6 +1596,8 @@ struct bnx2x {
 #define BC_SUPPORTS_RMMOD_CMD           (1 << 24)
 #define HAS_PHYS_PORT_ID                (1 << 25)
 #define AER_ENABLED                     (1 << 26)
+#define PTP_SUPPORTED                   (1 << 27)
+#define TX_TIMESTAMPING_EN              (1 << 28)
 
 #define BP_NOMCP(bp)                    ((bp)->flags & NO_MCP_FLAG)
 
@@ -1933,6 +1940,19 @@ struct bnx2x {
 
         u8                                      phys_port_id[ETH_ALEN];
 
+        /* PTP related context */
+        struct ptp_clock *ptp_clock;
+        struct ptp_clock_info ptp_clock_info;
+        struct work_struct ptp_task;
+        struct cyclecounter cyclecounter;
+        struct timecounter timecounter;
+        bool timecounter_init_done;
+        struct sk_buff *ptp_tx_skb;
+        unsigned long ptp_tx_start;
+        bool hwtstamp_ioctl_called;
+        u16 tx_type;
+        u16 rx_filter;
+
         struct bnx2x_link_report_data           vf_link_vars;
 };
 
@@ -2559,4 +2579,11 @@ void bnx2x_update_mng_version(struct bnx2x *bp);
 
 #define E1H_MAX_MF_SB_COUNT (HC_SB_MAX_SB_E1X/(E1HVN_MAX * PORT_MAX))
 
+void bnx2x_init_ptp(struct bnx2x *bp);
+int bnx2x_configure_ptp_filters(struct bnx2x *bp);
+void bnx2x_set_rx_ts(struct bnx2x *bp, struct sk_buff *skb);
+
+#define BNX2X_MAX_PHC_DRIFT 31000000
+#define BNX2X_PTP_TX_TIMEOUT
+
 #endif /* bnx2x.h */