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bnx2x: Add timestamping and PTP hardware clock support

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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>
This commit is contained in:
Michal Kalderon 2014-08-17 16:47:44 +03:00 • committed by David S. Miller
commit eeed018cbf
8 changed files with 984 additions and 13 deletions
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27
drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
View file

@ -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 */