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lan743x: lan743x: Add PTP support

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PTP support includes:
    Ingress, and egress timestamping.
    One step timestamping available.
    PTP clock support.
    Periodic output support.

Signed-off-by: Bryan Whitehead <Bryan.Whitehead@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Bryan Whitehead
2018-08-09 15:36:10 -04:00
committed by David S. Miller
parent 217e502b89
commit 07624df1c9
6 changed files with 1443 additions and 5 deletions
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101
drivers/net/ethernet/microchip/lan743x_main.h
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@@ -4,12 +4,17 @@
#ifndef _LAN743X_H
#define _LAN743X_H
#include "lan743x_ptp.h"
#define DRIVER_AUTHOR "Bryan Whitehead <Bryan.Whitehead@microchip.com>"
#define DRIVER_DESC "LAN743x PCIe Gigabit Ethernet Driver"
#define DRIVER_NAME "lan743x"
/* Register Definitions */
#define ID_REV (0x00)
#define ID_REV_ID_MASK_ (0xFFFF0000)
#define ID_REV_ID_LAN7430_ (0x74300000)
#define ID_REV_ID_LAN7431_ (0x74310000)
#define ID_REV_IS_VALID_CHIP_ID_(id_rev) \
(((id_rev) & 0xFFF00000) == 0x74300000)
#define ID_REV_CHIP_REV_MASK_ (0x0000FFFF)
@@ -62,6 +67,21 @@
#define E2P_DATA (0x044)
#define GPIO_CFG0 (0x050)
#define GPIO_CFG0_GPIO_DIR_BIT_(bit) BIT(16 + (bit))
#define GPIO_CFG0_GPIO_DATA_BIT_(bit) BIT(0 + (bit))
#define GPIO_CFG1 (0x054)
#define GPIO_CFG1_GPIOEN_BIT_(bit) BIT(16 + (bit))
#define GPIO_CFG1_GPIOBUF_BIT_(bit) BIT(0 + (bit))
#define GPIO_CFG2 (0x058)
#define GPIO_CFG2_1588_POL_BIT_(bit) BIT(0 + (bit))
#define GPIO_CFG3 (0x05C)
#define GPIO_CFG3_1588_CH_SEL_BIT_(bit) BIT(16 + (bit))
#define GPIO_CFG3_1588_OE_BIT_(bit) BIT(0 + (bit))
#define FCT_RX_CTL (0xAC)
#define FCT_RX_CTL_EN_(channel) BIT(28 + (channel))
#define FCT_RX_CTL_DIS_(channel) BIT(24 + (channel))
@@ -193,7 +213,8 @@
#define INT_BIT_DMA_TX_(channel) BIT(16 + (channel))
#define INT_BIT_ALL_TX_ (0x000F0000)
#define INT_BIT_SW_GP_ BIT(9)
#define INT_BIT_ALL_OTHER_ (0x00000280)
#define INT_BIT_1588_ BIT(7)
#define INT_BIT_ALL_OTHER_ (INT_BIT_SW_GP_ | INT_BIT_1588_)
#define INT_BIT_MAS_ BIT(0)
#define INT_SET (0x784)
@@ -234,6 +255,71 @@
#define INT_MOD_CFG6 (0x7D8)
#define INT_MOD_CFG7 (0x7DC)
#define PTP_CMD_CTL (0x0A00)
#define PTP_CMD_CTL_PTP_CLK_STP_NSEC_ BIT(6)
#define PTP_CMD_CTL_PTP_CLOCK_STEP_SEC_ BIT(5)
#define PTP_CMD_CTL_PTP_CLOCK_LOAD_ BIT(4)
#define PTP_CMD_CTL_PTP_CLOCK_READ_ BIT(3)
#define PTP_CMD_CTL_PTP_ENABLE_ BIT(2)
#define PTP_CMD_CTL_PTP_DISABLE_ BIT(1)
#define PTP_CMD_CTL_PTP_RESET_ BIT(0)
#define PTP_GENERAL_CONFIG (0x0A04)
#define PTP_GENERAL_CONFIG_CLOCK_EVENT_X_MASK_(channel) \
(0x7 << (1 + ((channel) << 2)))
#define PTP_GENERAL_CONFIG_CLOCK_EVENT_100NS_ (0)
#define PTP_GENERAL_CONFIG_CLOCK_EVENT_10US_ (1)
#define PTP_GENERAL_CONFIG_CLOCK_EVENT_100US_ (2)
#define PTP_GENERAL_CONFIG_CLOCK_EVENT_1MS_ (3)
#define PTP_GENERAL_CONFIG_CLOCK_EVENT_10MS_ (4)
#define PTP_GENERAL_CONFIG_CLOCK_EVENT_200MS_ (5)
#define PTP_GENERAL_CONFIG_CLOCK_EVENT_X_SET_(channel, value) \
(((value) & 0x7) << (1 + ((channel) << 2)))
#define PTP_GENERAL_CONFIG_RELOAD_ADD_X_(channel) (BIT((channel) << 2))
#define PTP_INT_STS (0x0A08)
#define PTP_INT_EN_SET (0x0A0C)
#define PTP_INT_EN_CLR (0x0A10)
#define PTP_INT_BIT_TX_SWTS_ERR_ BIT(13)
#define PTP_INT_BIT_TX_TS_ BIT(12)
#define PTP_INT_BIT_TIMER_B_ BIT(1)
#define PTP_INT_BIT_TIMER_A_ BIT(0)
#define PTP_CLOCK_SEC (0x0A14)
#define PTP_CLOCK_NS (0x0A18)
#define PTP_CLOCK_SUBNS (0x0A1C)
#define PTP_CLOCK_RATE_ADJ (0x0A20)
#define PTP_CLOCK_RATE_ADJ_DIR_ BIT(31)
#define PTP_CLOCK_STEP_ADJ (0x0A2C)
#define PTP_CLOCK_STEP_ADJ_DIR_ BIT(31)
#define PTP_CLOCK_STEP_ADJ_VALUE_MASK_ (0x3FFFFFFF)
#define PTP_CLOCK_TARGET_SEC_X(channel) (0x0A30 + ((channel) << 4))
#define PTP_CLOCK_TARGET_NS_X(channel) (0x0A34 + ((channel) << 4))
#define PTP_CLOCK_TARGET_RELOAD_SEC_X(channel) (0x0A38 + ((channel) << 4))
#define PTP_CLOCK_TARGET_RELOAD_NS_X(channel) (0x0A3C + ((channel) << 4))
#define PTP_LATENCY (0x0A5C)
#define PTP_LATENCY_TX_SET_(tx_latency) (((u32)(tx_latency)) << 16)
#define PTP_LATENCY_RX_SET_(rx_latency) \
(((u32)(rx_latency)) & 0x0000FFFF)
#define PTP_CAP_INFO (0x0A60)
#define PTP_CAP_INFO_TX_TS_CNT_GET_(reg_val) (((reg_val) & 0x00000070) >> 4)
#define PTP_TX_MOD (0x0AA4)
#define PTP_TX_MOD_TX_PTP_SYNC_TS_INSERT_ (0x10000000)
#define PTP_TX_MOD2 (0x0AA8)
#define PTP_TX_MOD2_TX_PTP_CLR_UDPV4_CHKSUM_ (0x00000001)
#define PTP_TX_EGRESS_SEC (0x0AAC)
#define PTP_TX_EGRESS_NS (0x0AB0)
#define PTP_TX_EGRESS_NS_CAPTURE_CAUSE_MASK_ (0xC0000000)
#define PTP_TX_EGRESS_NS_CAPTURE_CAUSE_AUTO_ (0x00000000)
#define PTP_TX_EGRESS_NS_CAPTURE_CAUSE_SW_ (0x40000000)
#define PTP_TX_EGRESS_NS_TS_NS_MASK_ (0x3FFFFFFF)
#define PTP_TX_MSG_HEADER (0x0AB4)
#define PTP_TX_MSG_HEADER_MSG_TYPE_ (0x000F0000)
#define PTP_TX_MSG_HEADER_MSG_TYPE_SYNC_ (0x00000000)
#define DMAC_CFG (0xC00)
#define DMAC_CFG_COAL_EN_ BIT(16)
#define DMAC_CFG_CH_ARB_SEL_RX_HIGH_ (0x00000000)
@@ -542,8 +628,12 @@ struct lan743x_tx_buffer_info;
#define TX_FRAME_FLAG_IN_PROGRESS BIT(0)
#define TX_TS_FLAG_TIMESTAMPING_ENABLED BIT(0)
#define TX_TS_FLAG_ONE_STEP_SYNC BIT(1)
struct lan743x_tx {
struct lan743x_adapter *adapter;
u32 ts_flags;
u32 vector_flags;
int channel_number;
@@ -570,6 +660,10 @@ struct lan743x_tx {
struct sk_buff *overflow_skb;
};
void lan743x_tx_set_timestamping_mode(struct lan743x_tx *tx,
bool enable_timestamping,
bool enable_onestep_sync);
/* RX */
struct lan743x_rx_descriptor;
struct lan743x_rx_buffer_info;
@@ -610,6 +704,9 @@ struct lan743x_adapter {
/* lock, used to prevent concurrent access to data port */
struct mutex dp_lock;
struct lan743x_gpio gpio;
struct lan743x_ptp ptp;
u8 mac_address[ETH_ALEN];
struct lan743x_phy phy;
@@ -660,6 +757,7 @@ struct lan743x_adapter {
#define TX_DESC_DATA0_IPE_ (0x00200000)
#define TX_DESC_DATA0_TPE_ (0x00100000)
#define TX_DESC_DATA0_FCS_ (0x00020000)
#define TX_DESC_DATA0_TSE_ (0x00010000)
#define TX_DESC_DATA0_BUF_LENGTH_MASK_ (0x0000FFFF)
#define TX_DESC_DATA0_EXT_LSO_ (0x00200000)
#define TX_DESC_DATA0_EXT_PAY_LENGTH_MASK_ (0x000FFFFF)
@@ -673,6 +771,7 @@ struct lan743x_tx_descriptor {
} __aligned(DEFAULT_DMA_DESCRIPTOR_SPACING);
#define TX_BUFFER_INFO_FLAG_ACTIVE BIT(0)
#define TX_BUFFER_INFO_FLAG_TIMESTAMP_REQUESTED BIT(1)
#define TX_BUFFER_INFO_FLAG_IGNORE_SYNC BIT(2)
#define TX_BUFFER_INFO_FLAG_SKB_FRAGMENT BIT(3)
struct lan743x_tx_buffer_info {