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Message-ID: <88d4aee3-cc38-b271-3f52-a28e5af7bdac@atmel.com>
Date: Wed, 25 Jan 2017 10:26:20 +0100
From: Nicolas Ferre <nicolas.ferre@...el.com>
To: Andrei Pistirica <andrei.pistirica@...rochip.com>,
<netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>, <davem@...emloft.net>,
<harinikatakamlinux@...il.com>, <harini.katakam@...inx.com>
CC: <punnaia@...inx.com>, <michals@...inx.com>, <anirudh@...inx.com>,
<boris.brezillon@...e-electrons.com>,
<alexandre.belloni@...e-electrons.com>, <tbultel@...elsurmer.com>,
<richardcochran@...il.com>, <rafalo@...ence.com>
Subject: Re: [PATCH net-next v2] macb: Common code to enable ptp support for
MACB/GEM
Le 19/01/2017 à 17:07, Nicolas Ferre a écrit :
> Le 19/01/2017 à 08:56, Andrei Pistirica a écrit :
>> This patch does the following:
>> - MACB/GEM-PTP interface
>> - registers and bitfields for TSU
>> - capability flags to enable PTP per platform basis
>>
>> Signed-off-by: Andrei Pistirica <andrei.pistirica@...rochip.com>
>
> Acked-by: Nicolas Ferre <nicolas.ferre@...el.com>
Harini or Rafal, do you plan to review this patch and add your
"Reviewed-by" tags? It can be useful to make this support move forward.
Regards,
>> ---
>> Patch history:
>>
>> Version 1:
>> This is just the common code for MACB/GEM-PTP support.
>> Code is based on the comments related to the following patch series:
>> - [RFC PATCH net-next v1-to-4 1/2] macb: Add 1588 support in Cadence GEM
>> - [RFC PATCH net-next v1-to-4 2/2] macb: Enable 1588 support in SAMA5Dx platforms
>>
>> Version 2:
>> - Cosmetic changes and PTP capability flag changed doe to overlapping with JUMBO.
>>
>> Note: Patch on net-next: January 19.
>>
>> drivers/net/ethernet/cadence/macb.c | 32 +++++++++++++++-
>> drivers/net/ethernet/cadence/macb.h | 74 +++++++++++++++++++++++++++++++++++++
>> 2 files changed, 104 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c
>> index c0fb80a..ff1e648 100644
>> --- a/drivers/net/ethernet/cadence/macb.c
>> +++ b/drivers/net/ethernet/cadence/macb.c
>> @@ -2085,6 +2085,9 @@ static int macb_open(struct net_device *dev)
>>
>> netif_tx_start_all_queues(dev);
>>
>> + if (bp->ptp_info)
>> + bp->ptp_info->ptp_init(dev);
>> +
>> return 0;
>> }
>>
>> @@ -2106,6 +2109,9 @@ static int macb_close(struct net_device *dev)
>>
>> macb_free_consistent(bp);
>>
>> + if (bp->ptp_info)
>> + bp->ptp_info->ptp_remove(dev);
>> +
>> return 0;
>> }
>>
>> @@ -2379,6 +2385,17 @@ static int macb_set_ringparam(struct net_device *netdev,
>> return 0;
>> }
>>
>> +static int macb_get_ts_info(struct net_device *netdev,
>> + struct ethtool_ts_info *info)
>> +{
>> + struct macb *bp = netdev_priv(netdev);
>> +
>> + if (bp->ptp_info)
>> + return bp->ptp_info->get_ts_info(netdev, info);
>> +
>> + return ethtool_op_get_ts_info(netdev, info);
>> +}
>> +
>> static const struct ethtool_ops macb_ethtool_ops = {
>> .get_regs_len = macb_get_regs_len,
>> .get_regs = macb_get_regs,
>> @@ -2396,7 +2413,7 @@ static const struct ethtool_ops gem_ethtool_ops = {
>> .get_regs_len = macb_get_regs_len,
>> .get_regs = macb_get_regs,
>> .get_link = ethtool_op_get_link,
>> - .get_ts_info = ethtool_op_get_ts_info,
>> + .get_ts_info = macb_get_ts_info,
>> .get_ethtool_stats = gem_get_ethtool_stats,
>> .get_strings = gem_get_ethtool_strings,
>> .get_sset_count = gem_get_sset_count,
>> @@ -2409,6 +2426,7 @@ static const struct ethtool_ops gem_ethtool_ops = {
>> static int macb_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
>> {
>> struct phy_device *phydev = dev->phydev;
>> + struct macb *bp = netdev_priv(dev);
>>
>> if (!netif_running(dev))
>> return -EINVAL;
>> @@ -2416,7 +2434,17 @@ static int macb_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
>> if (!phydev)
>> return -ENODEV;
>>
>> - return phy_mii_ioctl(phydev, rq, cmd);
>> + if (!bp->ptp_info)
>> + return phy_mii_ioctl(phydev, rq, cmd);
>> +
>> + switch (cmd) {
>> + case SIOCSHWTSTAMP:
>> + return bp->ptp_info->set_hwtst(dev, rq, cmd);
>> + case SIOCGHWTSTAMP:
>> + return bp->ptp_info->get_hwtst(dev, rq);
>> + default:
>> + return phy_mii_ioctl(phydev, rq, cmd);
>> + }
>> }
>>
>> static int macb_set_features(struct net_device *netdev,
>> diff --git a/drivers/net/ethernet/cadence/macb.h b/drivers/net/ethernet/cadence/macb.h
>> index d67adad..94ddedd 100644
>> --- a/drivers/net/ethernet/cadence/macb.h
>> +++ b/drivers/net/ethernet/cadence/macb.h
>> @@ -131,6 +131,20 @@
>> #define GEM_RXIPCCNT 0x01a8 /* IP header Checksum Error Counter */
>> #define GEM_RXTCPCCNT 0x01ac /* TCP Checksum Error Counter */
>> #define GEM_RXUDPCCNT 0x01b0 /* UDP Checksum Error Counter */
>> +#define GEM_TISUBN 0x01bc /* 1588 Timer Increment Sub-ns */
>> +#define GEM_TSH 0x01c0 /* 1588 Timer Seconds High */
>> +#define GEM_TSL 0x01d0 /* 1588 Timer Seconds Low */
>> +#define GEM_TN 0x01d4 /* 1588 Timer Nanoseconds */
>> +#define GEM_TA 0x01d8 /* 1588 Timer Adjust */
>> +#define GEM_TI 0x01dc /* 1588 Timer Increment */
>> +#define GEM_EFTSL 0x01e0 /* PTP Event Frame Tx Seconds Low */
>> +#define GEM_EFTN 0x01e4 /* PTP Event Frame Tx Nanoseconds */
>> +#define GEM_EFRSL 0x01e8 /* PTP Event Frame Rx Seconds Low */
>> +#define GEM_EFRN 0x01ec /* PTP Event Frame Rx Nanoseconds */
>> +#define GEM_PEFTSL 0x01f0 /* PTP Peer Event Frame Tx Secs Low */
>> +#define GEM_PEFTN 0x01f4 /* PTP Peer Event Frame Tx Ns */
>> +#define GEM_PEFRSL 0x01f8 /* PTP Peer Event Frame Rx Sec Low */
>> +#define GEM_PEFRN 0x01fc /* PTP Peer Event Frame Rx Ns */
>> #define GEM_DCFG1 0x0280 /* Design Config 1 */
>> #define GEM_DCFG2 0x0284 /* Design Config 2 */
>> #define GEM_DCFG3 0x0288 /* Design Config 3 */
>> @@ -174,6 +188,7 @@
>> #define MACB_NCR_TPF_SIZE 1
>> #define MACB_TZQ_OFFSET 12 /* Transmit zero quantum pause frame */
>> #define MACB_TZQ_SIZE 1
>> +#define MACB_SRTSM_OFFSET 15
>>
>> /* Bitfields in NCFGR */
>> #define MACB_SPD_OFFSET 0 /* Speed */
>> @@ -319,6 +334,32 @@
>> #define MACB_PTZ_SIZE 1
>> #define MACB_WOL_OFFSET 14 /* Enable wake-on-lan interrupt */
>> #define MACB_WOL_SIZE 1
>> +#define MACB_DRQFR_OFFSET 18 /* PTP Delay Request Frame Received */
>> +#define MACB_DRQFR_SIZE 1
>> +#define MACB_SFR_OFFSET 19 /* PTP Sync Frame Received */
>> +#define MACB_SFR_SIZE 1
>> +#define MACB_DRQFT_OFFSET 20 /* PTP Delay Request Frame Transmitted */
>> +#define MACB_DRQFT_SIZE 1
>> +#define MACB_SFT_OFFSET 21 /* PTP Sync Frame Transmitted */
>> +#define MACB_SFT_SIZE 1
>> +#define MACB_PDRQFR_OFFSET 22 /* PDelay Request Frame Received */
>> +#define MACB_PDRQFR_SIZE 1
>> +#define MACB_PDRSFR_OFFSET 23 /* PDelay Response Frame Received */
>> +#define MACB_PDRSFR_SIZE 1
>> +#define MACB_PDRQFT_OFFSET 24 /* PDelay Request Frame Transmitted */
>> +#define MACB_PDRQFT_SIZE 1
>> +#define MACB_PDRSFT_OFFSET 25 /* PDelay Response Frame Transmitted */
>> +#define MACB_PDRSFT_SIZE 1
>> +#define MACB_SRI_OFFSET 26 /* TSU Seconds Register Increment */
>> +#define MACB_SRI_SIZE 1
>> +
>> +/* Timer increment fields */
>> +#define MACB_TI_CNS_OFFSET 0
>> +#define MACB_TI_CNS_SIZE 8
>> +#define MACB_TI_ACNS_OFFSET 8
>> +#define MACB_TI_ACNS_SIZE 8
>> +#define MACB_TI_NIT_OFFSET 16
>> +#define MACB_TI_NIT_SIZE 8
>>
>> /* Bitfields in MAN */
>> #define MACB_DATA_OFFSET 0 /* data */
>> @@ -386,6 +427,17 @@
>> #define GEM_PBUF_LSO_OFFSET 27
>> #define GEM_PBUF_LSO_SIZE 1
>>
>> +/* Bitfields in TISUBN */
>> +#define GEM_SUBNSINCR_OFFSET 0
>> +#define GEM_SUBNSINCR_SIZE 16
>> +
>> +/* Bitfields in TI */
>> +#define GEM_NSINCR_OFFSET 0
>> +#define GEM_NSINCR_SIZE 8
>> +
>> +/* Bitfields in ADJ */
>> +#define GEM_ADDSUB_OFFSET 31
>> +#define GEM_ADDSUB_SIZE 1
>> /* Constants for CLK */
>> #define MACB_CLK_DIV8 0
>> #define MACB_CLK_DIV16 1
>> @@ -413,6 +465,7 @@
>> #define MACB_CAPS_NO_GIGABIT_HALF 0x00000008
>> #define MACB_CAPS_USRIO_DISABLED 0x00000010
>> #define MACB_CAPS_JUMBO 0x00000020
>> +#define MACB_CAPS_GEM_HAS_PTP 0x00000040
>> #define MACB_CAPS_FIFO_MODE 0x10000000
>> #define MACB_CAPS_GIGABIT_MODE_AVAILABLE 0x20000000
>> #define MACB_CAPS_SG_DISABLED 0x40000000
>> @@ -782,6 +835,20 @@ struct macb_or_gem_ops {
>> int (*mog_rx)(struct macb *bp, int budget);
>> };
>>
>> +/* MACB-PTP interface: adapt to platform needs. */
>> +struct macb_ptp_info {
>> + void (*ptp_init)(struct net_device *ndev);
>> + void (*ptp_remove)(struct net_device *ndev);
>> + s32 (*get_ptp_max_adj)(void);
>> + unsigned int (*get_tsu_rate)(struct macb *bp);
>> + int (*get_ts_info)(struct net_device *dev,
>> + struct ethtool_ts_info *info);
>> + int (*get_hwtst)(struct net_device *netdev,
>> + struct ifreq *ifr);
>> + int (*set_hwtst)(struct net_device *netdev,
>> + struct ifreq *ifr, int cmd);
>> +};
>> +
>> struct macb_config {
>> u32 caps;
>> unsigned int dma_burst_length;
>> @@ -874,6 +941,8 @@ struct macb {
>> unsigned int jumbo_max_len;
>>
>> u32 wol;
>> +
>> + struct macb_ptp_info *ptp_info; /* macb-ptp interface */
>> };
>>
>> static inline bool macb_is_gem(struct macb *bp)
>> @@ -881,4 +950,9 @@ static inline bool macb_is_gem(struct macb *bp)
>> return !!(bp->caps & MACB_CAPS_MACB_IS_GEM);
>> }
>>
>> +static inline bool gem_has_ptp(struct macb *bp)
>> +{
>> + return !!(bp->caps & MACB_CAPS_GEM_HAS_PTP);
>> +}
>> +
>> #endif /* _MACB_H */
>>
>
>
--
Nicolas Ferre
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