diff options
Diffstat (limited to 'drivers/net/phy')
| -rw-r--r-- | drivers/net/phy/marvell.c | 201 | ||||
| -rw-r--r-- | drivers/net/phy/phy.c | 106 |
2 files changed, 307 insertions, 0 deletions
diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c index 7fc8e10c5f33..4bc7febf9248 100644 --- a/drivers/net/phy/marvell.c +++ b/drivers/net/phy/marvell.c @@ -27,6 +27,7 @@ #include <linux/module.h> #include <linux/mii.h> #include <linux/ethtool.h> +#include <linux/ethtool_netlink.h> #include <linux/phy.h> #include <linux/marvell_phy.h> #include <linux/bitfield.h> @@ -42,6 +43,7 @@ #define MII_MARVELL_MSCR_PAGE 0x02 #define MII_MARVELL_LED_PAGE 0x03 #define MII_MARVELL_MISC_TEST_PAGE 0x06 +#define MII_MARVELL_VCT7_PAGE 0x07 #define MII_MARVELL_WOL_PAGE 0x11 #define MII_M1011_IEVENT 0x13 @@ -162,6 +164,36 @@ #define MII_88E1510_GEN_CTRL_REG_1_MODE_SGMII 0x1 /* SGMII to copper */ #define MII_88E1510_GEN_CTRL_REG_1_RESET 0x8000 /* Soft reset */ +#define MII_VCT7_PAIR_0_DISTANCE 0x10 +#define MII_VCT7_PAIR_1_DISTANCE 0x11 +#define MII_VCT7_PAIR_2_DISTANCE 0x12 +#define MII_VCT7_PAIR_3_DISTANCE 0x13 + +#define MII_VCT7_RESULTS 0x14 +#define MII_VCT7_RESULTS_PAIR3_MASK 0xf000 +#define MII_VCT7_RESULTS_PAIR2_MASK 0x0f00 +#define MII_VCT7_RESULTS_PAIR1_MASK 0x00f0 +#define MII_VCT7_RESULTS_PAIR0_MASK 0x000f +#define MII_VCT7_RESULTS_PAIR3_SHIFT 12 +#define MII_VCT7_RESULTS_PAIR2_SHIFT 8 +#define MII_VCT7_RESULTS_PAIR1_SHIFT 4 +#define MII_VCT7_RESULTS_PAIR0_SHIFT 0 +#define MII_VCT7_RESULTS_INVALID 0 +#define MII_VCT7_RESULTS_OK 1 +#define MII_VCT7_RESULTS_OPEN 2 +#define MII_VCT7_RESULTS_SAME_SHORT 3 +#define MII_VCT7_RESULTS_CROSS_SHORT 4 +#define MII_VCT7_RESULTS_BUSY 9 + +#define MII_VCT7_CTRL 0x15 +#define MII_VCT7_CTRL_RUN_NOW BIT(15) +#define MII_VCT7_CTRL_RUN_ANEG BIT(14) +#define MII_VCT7_CTRL_DISABLE_CROSS BIT(13) +#define MII_VCT7_CTRL_RUN_AFTER_BREAK_LINK BIT(12) +#define MII_VCT7_CTRL_IN_PROGRESS BIT(11) +#define MII_VCT7_CTRL_METERS BIT(10) +#define MII_VCT7_CTRL_CENTIMETERS 0 + #define LPA_PAUSE_FIBER 0x180 #define LPA_PAUSE_ASYM_FIBER 0x100 @@ -1658,6 +1690,163 @@ static void marvell_get_stats(struct phy_device *phydev, data[i] = marvell_get_stat(phydev, i); } +static int marvell_vct7_cable_test_start(struct phy_device *phydev) +{ + int bmcr, bmsr, ret; + + /* If auto-negotiation is enabled, but not complete, the cable + * test never completes. So disable auto-neg. + */ + bmcr = phy_read(phydev, MII_BMCR); + if (bmcr < 0) + return bmcr; + + bmsr = phy_read(phydev, MII_BMSR); + + if (bmsr < 0) + return bmsr; + + if (bmcr & BMCR_ANENABLE) { + ret = phy_modify(phydev, MII_BMCR, BMCR_ANENABLE, 0); + if (ret < 0) + return ret; + ret = genphy_soft_reset(phydev); + if (ret < 0) + return ret; + } + + /* If the link is up, allow it some time to go down */ + if (bmsr & BMSR_LSTATUS) + msleep(1500); + + return phy_write_paged(phydev, MII_MARVELL_VCT7_PAGE, + MII_VCT7_CTRL, + MII_VCT7_CTRL_RUN_NOW | + MII_VCT7_CTRL_CENTIMETERS); +} + +static int marvell_vct7_distance_to_length(int distance, bool meter) +{ + if (meter) + distance *= 100; + + return distance; +} + +static bool marvell_vct7_distance_valid(int result) +{ + switch (result) { + case MII_VCT7_RESULTS_OPEN: + case MII_VCT7_RESULTS_SAME_SHORT: + case MII_VCT7_RESULTS_CROSS_SHORT: + return true; + } + return false; +} + +static int marvell_vct7_report_length(struct phy_device *phydev, + int pair, bool meter) +{ + int length; + int ret; + + ret = phy_read_paged(phydev, MII_MARVELL_VCT7_PAGE, + MII_VCT7_PAIR_0_DISTANCE + pair); + if (ret < 0) + return ret; + + length = marvell_vct7_distance_to_length(ret, meter); + + ethnl_cable_test_fault_length(phydev, pair, length); + + return 0; +} + +static int marvell_vct7_cable_test_report_trans(int result) +{ + switch (result) { + case MII_VCT7_RESULTS_OK: + return ETHTOOL_A_CABLE_RESULT_CODE_OK; + case MII_VCT7_RESULTS_OPEN: + return ETHTOOL_A_CABLE_RESULT_CODE_OPEN; + case MII_VCT7_RESULTS_SAME_SHORT: + return ETHTOOL_A_CABLE_RESULT_CODE_SAME_SHORT; + case MII_VCT7_RESULTS_CROSS_SHORT: + return ETHTOOL_A_CABLE_RESULT_CODE_CROSS_SHORT; + default: + return ETHTOOL_A_CABLE_RESULT_CODE_UNSPEC; + } +} + +static int marvell_vct7_cable_test_report(struct phy_device *phydev) +{ + int pair0, pair1, pair2, pair3; + bool meter; + int ret; + + ret = phy_read_paged(phydev, MII_MARVELL_VCT7_PAGE, + MII_VCT7_RESULTS); + if (ret < 0) + return ret; + + pair3 = (ret & MII_VCT7_RESULTS_PAIR3_MASK) >> + MII_VCT7_RESULTS_PAIR3_SHIFT; + pair2 = (ret & MII_VCT7_RESULTS_PAIR2_MASK) >> + MII_VCT7_RESULTS_PAIR2_SHIFT; + pair1 = (ret & MII_VCT7_RESULTS_PAIR1_MASK) >> + MII_VCT7_RESULTS_PAIR1_SHIFT; + pair0 = (ret & MII_VCT7_RESULTS_PAIR0_MASK) >> + MII_VCT7_RESULTS_PAIR0_SHIFT; + + ethnl_cable_test_result(phydev, ETHTOOL_A_CABLE_PAIR_A, + marvell_vct7_cable_test_report_trans(pair0)); + ethnl_cable_test_result(phydev, ETHTOOL_A_CABLE_PAIR_B, + marvell_vct7_cable_test_report_trans(pair1)); + ethnl_cable_test_result(phydev, ETHTOOL_A_CABLE_PAIR_C, + marvell_vct7_cable_test_report_trans(pair2)); + ethnl_cable_test_result(phydev, ETHTOOL_A_CABLE_PAIR_D, + marvell_vct7_cable_test_report_trans(pair3)); + + ret = phy_read_paged(phydev, MII_MARVELL_VCT7_PAGE, MII_VCT7_CTRL); + if (ret < 0) + return ret; + + meter = ret & MII_VCT7_CTRL_METERS; + + if (marvell_vct7_distance_valid(pair0)) + marvell_vct7_report_length(phydev, 0, meter); + if (marvell_vct7_distance_valid(pair1)) + marvell_vct7_report_length(phydev, 1, meter); + if (marvell_vct7_distance_valid(pair2)) + marvell_vct7_report_length(phydev, 2, meter); + if (marvell_vct7_distance_valid(pair3)) + marvell_vct7_report_length(phydev, 3, meter); + + return 0; +} + +static int marvell_vct7_cable_test_get_status(struct phy_device *phydev, + bool *finished) +{ + int ret; + + *finished = false; + + ret = phy_read_paged(phydev, MII_MARVELL_VCT7_PAGE, + MII_VCT7_CTRL); + + if (ret < 0) + return ret; + + if (!(ret & MII_VCT7_CTRL_IN_PROGRESS)) { + *finished = true; + + return marvell_vct7_cable_test_report(phydev); + } + + return 0; +} + #ifdef CONFIG_HWMON static int m88e1121_get_temp(struct phy_device *phydev, long *temp) { @@ -2353,6 +2542,7 @@ static struct phy_driver marvell_drivers[] = { .phy_id_mask = MARVELL_PHY_ID_MASK, .name = "Marvell 88E1510", .features = PHY_GBIT_FIBRE_FEATURES, + .flags = PHY_POLL_CABLE_TEST, .probe = &m88e1510_probe, .config_init = &m88e1510_config_init, .config_aneg = &m88e1510_config_aneg, @@ -2372,12 +2562,15 @@ static struct phy_driver marvell_drivers[] = { .set_loopback = genphy_loopback, .get_tunable = m88e1011_get_tunable, .set_tunable = m88e1011_set_tunable, + .cable_test_start = marvell_vct7_cable_test_start, + .cable_test_get_status = marvell_vct7_cable_test_get_status, }, { .phy_id = MARVELL_PHY_ID_88E1540, .phy_id_mask = MARVELL_PHY_ID_MASK, .name = "Marvell 88E1540", /* PHY_GBIT_FEATURES */ + .flags = PHY_POLL_CABLE_TEST, .probe = m88e1510_probe, .config_init = &marvell_config_init, .config_aneg = &m88e1510_config_aneg, @@ -2394,6 +2587,8 @@ static struct phy_driver marvell_drivers[] = { .get_stats = marvell_get_stats, .get_tunable = m88e1540_get_tunable, .set_tunable = m88e1540_set_tunable, + .cable_test_start = marvell_vct7_cable_test_start, + .cable_test_get_status = marvell_vct7_cable_test_get_status, }, { .phy_id = MARVELL_PHY_ID_88E1545, @@ -2401,6 +2596,7 @@ static struct phy_driver marvell_drivers[] = { .name = "Marvell 88E1545", .probe = m88e1510_probe, /* PHY_GBIT_FEATURES */ + .flags = PHY_POLL_CABLE_TEST, .config_init = &marvell_config_init, .config_aneg = &m88e1510_config_aneg, .read_status = &marvell_read_status, @@ -2416,6 +2612,8 @@ static struct phy_driver marvell_drivers[] = { .get_stats = marvell_get_stats, .get_tunable = m88e1540_get_tunable, .set_tunable = m88e1540_set_tunable, + .cable_test_start = marvell_vct7_cable_test_start, + .cable_test_get_status = marvell_vct7_cable_test_get_status, }, { .phy_id = MARVELL_PHY_ID_88E3016, @@ -2442,6 +2640,7 @@ static struct phy_driver marvell_drivers[] = { .phy_id_mask = MARVELL_PHY_ID_MASK, .name = "Marvell 88E6390", /* PHY_GBIT_FEATURES */ + .flags = PHY_POLL_CABLE_TEST, .probe = m88e6390_probe, .config_init = &marvell_config_init, .config_aneg = &m88e6390_config_aneg, @@ -2458,6 +2657,8 @@ static struct phy_driver marvell_drivers[] = { .get_stats = marvell_get_stats, .get_tunable = m88e1540_get_tunable, .set_tunable = m88e1540_set_tunable, + .cable_test_start = marvell_vct7_cable_test_start, + .cable_test_get_status = marvell_vct7_cable_test_get_status, }, }; diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c index 8c22d02b4218..9bdc924eea83 100644 --- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -15,12 +15,14 @@ #include <linux/interrupt.h> #include <linux/delay.h> #include <linux/netdevice.h> +#include <linux/netlink.h> #include <linux/etherdevice.h> #include <linux/skbuff.h> #include <linux/mm.h> #include <linux/module.h> #include <linux/mii.h> #include <linux/ethtool.h> +#include <linux/ethtool_netlink.h> #include <linux/phy.h> #include <linux/phy_led_triggers.h> #include <linux/sfp.h> @@ -29,6 +31,9 @@ #include <linux/io.h> #include <linux/uaccess.h> #include <linux/atomic.h> +#include <net/netlink.h> +#include <net/genetlink.h> +#include <net/sock.h> #define PHY_STATE_TIME HZ @@ -44,6 +49,7 @@ static const char *phy_state_to_str(enum phy_state st) PHY_STATE_STR(UP) PHY_STATE_STR(RUNNING) PHY_STATE_STR(NOLINK) + PHY_STATE_STR(CABLETEST) PHY_STATE_STR(HALTED) } @@ -472,6 +478,80 @@ static void phy_trigger_machine(struct phy_device *phydev) phy_queue_state_machine(phydev, 0); } +static void phy_abort_cable_test(struct phy_device *phydev) +{ + int err; + + ethnl_cable_test_finished(phydev); + + err = phy_init_hw(phydev); + if (err) + phydev_err(phydev, "Error while aborting cable test"); +} + +int phy_start_cable_test(struct phy_device *phydev, + struct netlink_ext_ack *extack) +{ + struct net_device *dev = phydev->attached_dev; + int err = -ENOMEM; + + if (!(phydev->drv && + phydev->drv->cable_test_start && + phydev->drv->cable_test_get_status)) { + NL_SET_ERR_MSG(extack, + "PHY driver does not support cable testing"); + return -EOPNOTSUPP; + } + + mutex_lock(&phydev->lock); + if (phydev->state == PHY_CABLETEST) { + NL_SET_ERR_MSG(extack, + "PHY already performing a test"); + err = -EBUSY; + goto out; + } + + if (phydev->state < PHY_UP || + phydev->state > PHY_CABLETEST) { + NL_SET_ERR_MSG(extack, + "PHY not configured. Try setting interface up"); + err = -EBUSY; + goto out; + } + + err = ethnl_cable_test_alloc(phydev); + if (err) + goto out; + + /* Mark the carrier down until the test is complete */ + phy_link_down(phydev, true); + + netif_testing_on(dev); + err = phydev->drv->cable_test_start(phydev); + if (err) { + netif_testing_off(dev); + phy_link_up(phydev); + goto out_free; + } + + phydev->state = PHY_CABLETEST; + + if (phy_polling_mode(phydev)) + phy_trigger_machine(phydev); + + mutex_unlock(&phydev->lock); + + return 0; + +out_free: + ethnl_cable_test_free(phydev); +out: + mutex_unlock(&phydev->lock); + + return err; +} +EXPORT_SYMBOL(phy_start_cable_test); + static int phy_config_aneg(struct phy_device *phydev) { if (phydev->drv->config_aneg) @@ -802,6 +882,8 @@ EXPORT_SYMBOL(phy_free_interrupt); */ void phy_stop(struct phy_device *phydev) { + struct net_device *dev = phydev->attached_dev; + if (!phy_is_started(phydev)) { WARN(1, "called from state %s\n", phy_state_to_str(phydev->state)); @@ -810,6 +892,11 @@ void phy_stop(struct phy_device *phydev) mutex_lock(&phydev->lock); + if (phydev->state == PHY_CABLETEST) { + phy_abort_cable_test(phydev); + netif_testing_off(dev); + } + if (phydev->sfp_bus) sfp_upstream_stop(phydev->sfp_bus); @@ -870,8 +957,10 @@ void phy_state_machine(struct work_struct *work) struct delayed_work *dwork = to_delayed_work(work); struct phy_device *phydev = container_of(dwork, struct phy_device, state_queue); + struct net_device *dev = phydev->attached_dev; bool needs_aneg = false, do_suspend = false; enum phy_state old_state; + bool finished = false; int err = 0; mutex_lock(&phydev->lock); @@ -890,6 +979,23 @@ void phy_state_machine(struct work_struct *work) case PHY_RUNNING: err = phy_check_link_status(phydev); break; + case PHY_CABLETEST: + err = phydev->drv->cable_test_get_status(phydev, &finished); + if (err) { + phy_abort_cable_test(phydev); + netif_testing_off(dev); + needs_aneg = true; + phydev->state = PHY_UP; + break; + } + + if (finished) { + ethnl_cable_test_finished(phydev); + netif_testing_off(dev); + needs_aneg = true; + phydev->state = PHY_UP; + } + break; case PHY_HALTED: if (phydev->link) { phydev->link = 0; |