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[netdrvr] sfc: sfc: Add self-test support 

Add a set of self-tests accessible thorugh ethtool.
Add hardware loopback and TX disable control code to support them.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Ben Hutchings 2008-05-07 13:36:19 +01:00 committed by Jeff Garzik
parent 05e3ec0446
commit 3273c2e8c6
14 changed files with 1379 additions and 7 deletions
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4
drivers/net/sfc/Makefile
View File

@ -1,5 +1,5 @@
sfc-y += efx.o falcon.o tx.o rx.o falcon_xmac.o \
i2c-direct.o ethtool.o xfp_phy.o mdio_10g.o \
tenxpress.o boards.o sfe4001.o
i2c-direct.o selftest.o ethtool.o xfp_phy.o \
mdio_10g.o tenxpress.o boards.o sfe4001.o
obj-$(CONFIG_SFC) += sfc.o

49
drivers/net/sfc/enum.h
View File

@ -10,6 +10,55 @@
#ifndef EFX_ENUM_H
#define EFX_ENUM_H
/**
* enum efx_loopback_mode - loopback modes
* @LOOPBACK_NONE: no loopback
* @LOOPBACK_XGMII: loopback within MAC at XGMII level
* @LOOPBACK_XGXS: loopback within MAC at XGXS level
* @LOOPBACK_XAUI: loopback within MAC at XAUI level
* @LOOPBACK_PHYXS: loopback within PHY at PHYXS level
* @LOOPBACK_PCS: loopback within PHY at PCS level
* @LOOPBACK_PMAPMD: loopback within PHY at PMAPMD level
* @LOOPBACK_NETWORK: reflecting loopback (even further than furthest!)
*/
/* Please keep in order and up-to-date w.r.t the following two #defines */
enum efx_loopback_mode {
LOOPBACK_NONE = 0,
LOOPBACK_MAC = 1,
LOOPBACK_XGMII = 2,
LOOPBACK_XGXS = 3,
LOOPBACK_XAUI = 4,
LOOPBACK_PHY = 5,
LOOPBACK_PHYXS = 6,
LOOPBACK_PCS = 7,
LOOPBACK_PMAPMD = 8,
LOOPBACK_NETWORK = 9,
LOOPBACK_MAX
};
#define LOOPBACK_TEST_MAX LOOPBACK_PMAPMD
extern const char *efx_loopback_mode_names[];
#define LOOPBACK_MODE_NAME(mode) \
STRING_TABLE_LOOKUP(mode, efx_loopback_mode)
#define LOOPBACK_MODE(efx) \
LOOPBACK_MODE_NAME(efx->loopback_mode)
/* These loopbacks occur within the controller */
#define LOOPBACKS_10G_INTERNAL ((1 << LOOPBACK_XGMII)| \
(1 << LOOPBACK_XGXS) | \
(1 << LOOPBACK_XAUI))
#define LOOPBACK_MASK(_efx) \
(1 << (_efx)->loopback_mode)
#define LOOPBACK_INTERNAL(_efx) \
((LOOPBACKS_10G_INTERNAL & LOOPBACK_MASK(_efx)) ? 1 : 0)
#define LOOPBACK_OUT_OF(_from, _to, _mask) \
(((LOOPBACK_MASK(_from) & (_mask)) && \
((LOOPBACK_MASK(_to) & (_mask)) == 0)) ? 1 : 0)
/*****************************************************************************/
/**

232
drivers/net/sfc/ethtool.c
View File

@ -12,12 +12,26 @@
#include <linux/ethtool.h>
#include <linux/rtnetlink.h>
#include "net_driver.h"
#include "selftest.h"
#include "efx.h"
#include "ethtool.h"
#include "falcon.h"
#include "gmii.h"
#include "mac.h"
const char *efx_loopback_mode_names[] = {
[LOOPBACK_NONE] = "NONE",
[LOOPBACK_MAC] = "MAC",
[LOOPBACK_XGMII] = "XGMII",
[LOOPBACK_XGXS] = "XGXS",
[LOOPBACK_XAUI] = "XAUI",
[LOOPBACK_PHY] = "PHY",
[LOOPBACK_PHYXS] = "PHY(XS)",
[LOOPBACK_PCS] = "PHY(PCS)",
[LOOPBACK_PMAPMD] = "PHY(PMAPMD)",
[LOOPBACK_NETWORK] = "NETWORK",
};
static int efx_ethtool_set_tx_csum(struct net_device *net_dev, u32 enable);
struct ethtool_string {
@ -217,23 +231,179 @@ static void efx_ethtool_get_drvinfo(struct net_device *net_dev,
strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
}
/**
* efx_fill_test - fill in an individual self-test entry
* @test_index: Index of the test
* @strings: Ethtool strings, or %NULL
* @data: Ethtool test results, or %NULL
* @test: Pointer to test result (used only if data != %NULL)
* @unit_format: Unit name format (e.g. "channel\%d")
* @unit_id: Unit id (e.g. 0 for "channel0")
* @test_format: Test name format (e.g. "loopback.\%s.tx.sent")
* @test_id: Test id (e.g. "PHY" for "loopback.PHY.tx_sent")
*
* Fill in an individual self-test entry.
*/
static void efx_fill_test(unsigned int test_index,
struct ethtool_string *strings, u64 *data,
int *test, const char *unit_format, int unit_id,
const char *test_format, const char *test_id)
{
struct ethtool_string unit_str, test_str;
/* Fill data value, if applicable */
if (data)
data[test_index] = *test;
/* Fill string, if applicable */
if (strings) {
snprintf(unit_str.name, sizeof(unit_str.name),
unit_format, unit_id);
snprintf(test_str.name, sizeof(test_str.name),
test_format, test_id);
snprintf(strings[test_index].name,
sizeof(strings[test_index].name),
"%-9s%-17s", unit_str.name, test_str.name);
}
}
#define EFX_PORT_NAME "port%d", 0
#define EFX_CHANNEL_NAME(_channel) "channel%d", _channel->channel
#define EFX_TX_QUEUE_NAME(_tx_queue) "txq%d", _tx_queue->queue
#define EFX_RX_QUEUE_NAME(_rx_queue) "rxq%d", _rx_queue->queue
#define EFX_LOOPBACK_NAME(_mode, _counter) \
"loopback.%s." _counter, LOOPBACK_MODE_NAME(mode)
/**
* efx_fill_loopback_test - fill in a block of loopback self-test entries
* @efx: Efx NIC
* @lb_tests: Efx loopback self-test results structure
* @mode: Loopback test mode
* @test_index: Starting index of the test
* @strings: Ethtool strings, or %NULL
* @data: Ethtool test results, or %NULL
*/
static int efx_fill_loopback_test(struct efx_nic *efx,
struct efx_loopback_self_tests *lb_tests,
enum efx_loopback_mode mode,
unsigned int test_index,
struct ethtool_string *strings, u64 *data)
{
struct efx_tx_queue *tx_queue;
efx_for_each_tx_queue(tx_queue, efx) {
efx_fill_test(test_index++, strings, data,
&lb_tests->tx_sent[tx_queue->queue],
EFX_TX_QUEUE_NAME(tx_queue),
EFX_LOOPBACK_NAME(mode, "tx_sent"));
efx_fill_test(test_index++, strings, data,
&lb_tests->tx_done[tx_queue->queue],
EFX_TX_QUEUE_NAME(tx_queue),
EFX_LOOPBACK_NAME(mode, "tx_done"));
}
efx_fill_test(test_index++, strings, data,
&lb_tests->rx_good,
EFX_PORT_NAME,
EFX_LOOPBACK_NAME(mode, "rx_good"));
efx_fill_test(test_index++, strings, data,
&lb_tests->rx_bad,
EFX_PORT_NAME,
EFX_LOOPBACK_NAME(mode, "rx_bad"));
return test_index;
}
/**
* efx_ethtool_fill_self_tests - get self-test details
* @efx: Efx NIC
* @tests: Efx self-test results structure, or %NULL
* @strings: Ethtool strings, or %NULL
* @data: Ethtool test results, or %NULL
*/
static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
struct efx_self_tests *tests,
struct ethtool_string *strings,
u64 *data)
{
struct efx_channel *channel;
unsigned int n = 0;
enum efx_loopback_mode mode;
/* Interrupt */
efx_fill_test(n++, strings, data, &tests->interrupt,
"core", 0, "interrupt", NULL);
/* Event queues */
efx_for_each_channel(channel, efx) {
efx_fill_test(n++, strings, data,
&tests->eventq_dma[channel->channel],
EFX_CHANNEL_NAME(channel),
"eventq.dma", NULL);
efx_fill_test(n++, strings, data,
&tests->eventq_int[channel->channel],
EFX_CHANNEL_NAME(channel),
"eventq.int", NULL);
efx_fill_test(n++, strings, data,
&tests->eventq_poll[channel->channel],
EFX_CHANNEL_NAME(channel),
"eventq.poll", NULL);
}
/* PHY presence */
efx_fill_test(n++, strings, data, &tests->phy_ok,
EFX_PORT_NAME, "phy_ok", NULL);
/* Loopback tests */
efx_fill_test(n++, strings, data, &tests->loopback_speed,
EFX_PORT_NAME, "loopback.speed", NULL);
efx_fill_test(n++, strings, data, &tests->loopback_full_duplex,
EFX_PORT_NAME, "loopback.full_duplex", NULL);
for (mode = LOOPBACK_NONE; mode < LOOPBACK_TEST_MAX; mode++) {
if (!(efx->loopback_modes & (1 << mode)))
continue;
n = efx_fill_loopback_test(efx,
&tests->loopback[mode], mode, n,
strings, data);
}
return n;
}
static int efx_ethtool_get_stats_count(struct net_device *net_dev)
{
return EFX_ETHTOOL_NUM_STATS;
}
static int efx_ethtool_self_test_count(struct net_device *net_dev)
{
struct efx_nic *efx = net_dev->priv;
return efx_ethtool_fill_self_tests(efx, NULL, NULL, NULL);
}
static void efx_ethtool_get_strings(struct net_device *net_dev,
u32 string_set, u8 *strings)
{
struct efx_nic *efx = net_dev->priv;
struct ethtool_string *ethtool_strings =
(struct ethtool_string *)strings;
int i;
if (string_set == ETH_SS_STATS)
switch (string_set) {
case ETH_SS_STATS:
for (i = 0; i < EFX_ETHTOOL_NUM_STATS; i++)
strncpy(ethtool_strings[i].name,
efx_ethtool_stats[i].name,
sizeof(ethtool_strings[i].name));
break;
case ETH_SS_TEST:
efx_ethtool_fill_self_tests(efx, NULL,
ethtool_strings, NULL);
break;
default:
/* No other string sets */
break;
}
}
static void efx_ethtool_get_stats(struct net_device *net_dev,
@ -330,6 +500,64 @@ static u32 efx_ethtool_get_rx_csum(struct net_device *net_dev)
return efx->rx_checksum_enabled;
}
static void efx_ethtool_self_test(struct net_device *net_dev,
struct ethtool_test *test, u64 *data)
{
struct efx_nic *efx = net_dev->priv;
struct efx_self_tests efx_tests;
int offline, already_up;
int rc;
ASSERT_RTNL();
if (efx->state != STATE_RUNNING) {
rc = -EIO;
goto fail1;
}
/* We need rx buffers and interrupts. */
already_up = (efx->net_dev->flags & IFF_UP);
if (!already_up) {
rc = dev_open(efx->net_dev);
if (rc) {
EFX_ERR(efx, "failed opening device.\n");
goto fail2;
}
}
memset(&efx_tests, 0, sizeof(efx_tests));
offline = (test->flags & ETH_TEST_FL_OFFLINE);
/* Perform online self tests first */
rc = efx_online_test(efx, &efx_tests);
if (rc)
goto out;
/* Perform offline tests only if online tests passed */
if (offline) {
/* Stop the kernel from sending packets during the test. */
efx_stop_queue(efx);
rc = efx_flush_queues(efx);
if (!rc)
rc = efx_offline_test(efx, &efx_tests,
efx->loopback_modes);
efx_wake_queue(efx);
}
out:
if (!already_up)
dev_close(efx->net_dev);
EFX_LOG(efx, "%s all %sline self-tests\n",
rc == 0 ? "passed" : "failed", offline ? "off" : "on");
fail2:
fail1:
/* Fill ethtool results structures */
efx_ethtool_fill_self_tests(efx, &efx_tests, NULL, data);
if (rc)
test->flags |= ETH_TEST_FL_FAILED;
}
/* Restart autonegotiation */
static int efx_ethtool_nway_reset(struct net_device *net_dev)
{
@ -480,6 +708,8 @@ struct ethtool_ops efx_ethtool_ops = {
.set_tso = efx_ethtool_set_tso,
.get_flags = ethtool_op_get_flags,
.set_flags = ethtool_op_set_flags,
.self_test_count = efx_ethtool_self_test_count,
.self_test = efx_ethtool_self_test,
.get_strings = efx_ethtool_get_strings,
.phys_id = efx_ethtool_phys_id,
.get_stats_count = efx_ethtool_get_stats_count,

5
drivers/net/sfc/falcon.c
View File

@ -1732,7 +1732,8 @@ void falcon_drain_tx_fifo(struct efx_nic *efx)
efx_oword_t temp;
int count;
if (FALCON_REV(efx) < FALCON_REV_B0)
if ((FALCON_REV(efx) < FALCON_REV_B0) ||
(efx->loopback_mode != LOOPBACK_NONE))
return;
falcon_read(efx, &temp, MAC0_CTRL_REG_KER);
@ -2092,6 +2093,8 @@ static int falcon_probe_phy(struct efx_nic *efx)
efx->phy_type);
return -1;
}
efx->loopback_modes = LOOPBACKS_10G_INTERNAL | efx->phy_op->loopbacks;
return 0;
}

16
drivers/net/sfc/falcon_hwdefs.h
View File

@ -636,6 +636,14 @@
#define XX_HIDRVA_WIDTH 1
#define XX_LODRVA_LBN 8
#define XX_LODRVA_WIDTH 1
#define XX_LPBKD_LBN 3
#define XX_LPBKD_WIDTH 1
#define XX_LPBKC_LBN 2
#define XX_LPBKC_WIDTH 1
#define XX_LPBKB_LBN 1
#define XX_LPBKB_WIDTH 1
#define XX_LPBKA_LBN 0
#define XX_LPBKA_WIDTH 1
#define XX_TXDRV_CTL_REG_MAC 0x12
#define XX_DEQD_LBN 28
@ -656,8 +664,14 @@
#define XX_DTXA_WIDTH 4
/* XAUI XGXS core status register */
#define XX_FORCE_SIG_DECODE_FORCED 0xff
#define XX_CORE_STAT_REG_MAC 0x16
#define XX_FORCE_SIG_LBN 24
#define XX_FORCE_SIG_WIDTH 8
#define XX_FORCE_SIG_DECODE_FORCED 0xff
#define XX_XGXS_LB_EN_LBN 23
#define XX_XGXS_LB_EN_WIDTH 1
#define XX_XGMII_LB_EN_LBN 22
#define XX_XGMII_LB_EN_WIDTH 1
#define XX_ALIGN_DONE_LBN 20
#define XX_ALIGN_DONE_WIDTH 1
#define XX_SYNC_STAT_LBN 16

72
drivers/net/sfc/falcon_xmac.c
View File

@ -241,7 +241,7 @@ static void falcon_mask_status_intr(struct efx_nic *efx, int enable)
{
efx_dword_t reg;
if (FALCON_REV(efx) < FALCON_REV_B0)
if ((FALCON_REV(efx) < FALCON_REV_B0) || LOOPBACK_INTERNAL(efx))
return;
/* Flush the ISR */
@ -288,6 +288,9 @@ int falcon_xaui_link_ok(struct efx_nic *efx)
efx_dword_t reg;
int align_done, sync_status, link_ok = 0;
if (LOOPBACK_INTERNAL(efx))
return 1;
/* Read link status */
falcon_xmac_readl(efx, &reg, XX_CORE_STAT_REG_MAC);
@ -378,6 +381,61 @@ static void falcon_reconfigure_xmac_core(struct efx_nic *efx)
falcon_xmac_writel(efx, &reg, XM_ADR_HI_REG_MAC);
}
static void falcon_reconfigure_xgxs_core(struct efx_nic *efx)
{
efx_dword_t reg;
int xgxs_loopback = (efx->loopback_mode == LOOPBACK_XGXS) ? 1 : 0;
int xaui_loopback = (efx->loopback_mode == LOOPBACK_XAUI) ? 1 : 0;
int xgmii_loopback =
(efx->loopback_mode == LOOPBACK_XGMII) ? 1 : 0;
/* XGXS block is flaky and will need to be reset if moving
* into our out of XGMII, XGXS or XAUI loopbacks. */
if (EFX_WORKAROUND_5147(efx)) {
int old_xgmii_loopback, old_xgxs_loopback, old_xaui_loopback;
int reset_xgxs;
falcon_xmac_readl(efx, &reg, XX_CORE_STAT_REG_MAC);
old_xgxs_loopback = EFX_DWORD_FIELD(reg, XX_XGXS_LB_EN);
old_xgmii_loopback = EFX_DWORD_FIELD(reg, XX_XGMII_LB_EN);
falcon_xmac_readl(efx, &reg, XX_SD_CTL_REG_MAC);
old_xaui_loopback = EFX_DWORD_FIELD(reg, XX_LPBKA);
/* The PHY driver may have turned XAUI off */
reset_xgxs = ((xgxs_loopback != old_xgxs_loopback) ||
(xaui_loopback != old_xaui_loopback) ||
(xgmii_loopback != old_xgmii_loopback));
if (reset_xgxs) {
falcon_xmac_readl(efx, &reg, XX_PWR_RST_REG_MAC);
EFX_SET_DWORD_FIELD(reg, XX_RSTXGXSTX_EN, 1);
EFX_SET_DWORD_FIELD(reg, XX_RSTXGXSRX_EN, 1);
falcon_xmac_writel(efx, &reg, XX_PWR_RST_REG_MAC);
udelay(1);
EFX_SET_DWORD_FIELD(reg, XX_RSTXGXSTX_EN, 0);
EFX_SET_DWORD_FIELD(reg, XX_RSTXGXSRX_EN, 0);
falcon_xmac_writel(efx, &reg, XX_PWR_RST_REG_MAC);
udelay(1);
}
}
falcon_xmac_readl(efx, &reg, XX_CORE_STAT_REG_MAC);
EFX_SET_DWORD_FIELD(reg, XX_FORCE_SIG,
(xgxs_loopback || xaui_loopback) ?
XX_FORCE_SIG_DECODE_FORCED : 0);
EFX_SET_DWORD_FIELD(reg, XX_XGXS_LB_EN, xgxs_loopback);
EFX_SET_DWORD_FIELD(reg, XX_XGMII_LB_EN, xgmii_loopback);
falcon_xmac_writel(efx, &reg, XX_CORE_STAT_REG_MAC);
falcon_xmac_readl(efx, &reg, XX_SD_CTL_REG_MAC);
EFX_SET_DWORD_FIELD(reg, XX_LPBKD, xaui_loopback);
EFX_SET_DWORD_FIELD(reg, XX_LPBKC, xaui_loopback);
EFX_SET_DWORD_FIELD(reg, XX_LPBKB, xaui_loopback);
EFX_SET_DWORD_FIELD(reg, XX_LPBKA, xaui_loopback);
falcon_xmac_writel(efx, &reg, XX_SD_CTL_REG_MAC);
}
/* Try and bring the Falcon side of the Falcon-Phy XAUI link fails
* to come back up. Bash it until it comes back up */
static int falcon_check_xaui_link_up(struct efx_nic *efx)
@ -386,7 +444,8 @@ static int falcon_check_xaui_link_up(struct efx_nic *efx)
tries = EFX_WORKAROUND_5147(efx) ? 5 : 1;
max_tries = tries;
if (efx->phy_type == PHY_TYPE_NONE)
if ((efx->loopback_mode == LOOPBACK_NETWORK) ||
(efx->phy_type == PHY_TYPE_NONE))
return 0;
while (tries) {
@ -412,8 +471,13 @@ void falcon_reconfigure_xmac(struct efx_nic *efx)
falcon_mask_status_intr(efx, 0);
falcon_deconfigure_mac_wrapper(efx);
efx->tx_disabled = LOOPBACK_INTERNAL(efx);
efx->phy_op->reconfigure(efx);
falcon_reconfigure_xgxs_core(efx);
falcon_reconfigure_xmac_core(efx);
falcon_reconfigure_mac_wrapper(efx);
/* Ensure XAUI link is up */
@ -500,6 +564,10 @@ int falcon_check_xmac(struct efx_nic *efx)
unsigned xaui_link_ok;
int rc;
if ((efx->loopback_mode == LOOPBACK_NETWORK) ||
(efx->phy_type == PHY_TYPE_NONE))
return 0;
falcon_mask_status_intr(efx, 0);
xaui_link_ok = falcon_xaui_link_ok(efx);

78
drivers/net/sfc/mdio_10g.c
View File

@ -44,6 +44,9 @@ static int mdio_clause45_check_mmd(struct efx_nic *efx, int mmd,
int status;
int phy_id = efx->mii.phy_id;
if (LOOPBACK_INTERNAL(efx))
return 0;
/* Read MMD STATUS2 to check it is responding. */
status = mdio_clause45_read(efx, phy_id, mmd, MDIO_MMDREG_STAT2);
if (((status >> MDIO_MMDREG_STAT2_PRESENT_LBN) &
@ -164,6 +167,22 @@ int mdio_clause45_links_ok(struct efx_nic *efx, unsigned int mmd_mask)
int mmd = 0;
int good;
/* If the port is in loopback, then we should only consider a subset
* of mmd's */
if (LOOPBACK_INTERNAL(efx))
return 1;
else if (efx->loopback_mode == LOOPBACK_NETWORK)
return 0;
else if (efx->loopback_mode == LOOPBACK_PHYXS)
mmd_mask &= ~(MDIO_MMDREG_DEVS0_PHYXS |
MDIO_MMDREG_DEVS0_PCS |
MDIO_MMDREG_DEVS0_PMAPMD);
else if (efx->loopback_mode == LOOPBACK_PCS)
mmd_mask &= ~(MDIO_MMDREG_DEVS0_PCS |
MDIO_MMDREG_DEVS0_PMAPMD);
else if (efx->loopback_mode == LOOPBACK_PMAPMD)
mmd_mask &= ~MDIO_MMDREG_DEVS0_PMAPMD;
while (mmd_mask) {
if (mmd_mask & 1) {
/* Double reads because link state is latched, and a
@ -182,6 +201,65 @@ int mdio_clause45_links_ok(struct efx_nic *efx, unsigned int mmd_mask)
return ok;
}
void mdio_clause45_transmit_disable(struct efx_nic *efx)
{
int phy_id = efx->mii.phy_id;
int ctrl1, ctrl2;
ctrl1 = ctrl2 = mdio_clause45_read(efx, phy_id, MDIO_MMD_PMAPMD,
MDIO_MMDREG_TXDIS);
if (efx->tx_disabled)
ctrl2 |= (1 << MDIO_MMDREG_TXDIS_GLOBAL_LBN);
else
ctrl1 &= ~(1 << MDIO_MMDREG_TXDIS_GLOBAL_LBN);
if (ctrl1 != ctrl2)
mdio_clause45_write(efx, phy_id, MDIO_MMD_PMAPMD,
MDIO_MMDREG_TXDIS, ctrl2);
}
void mdio_clause45_phy_reconfigure(struct efx_nic *efx)
{
int phy_id = efx->mii.phy_id;
int ctrl1, ctrl2;
/* Handle (with debouncing) PMA/PMD loopback */
ctrl1 = ctrl2 = mdio_clause45_read(efx, phy_id, MDIO_MMD_PMAPMD,
MDIO_MMDREG_CTRL1);
if (efx->loopback_mode == LOOPBACK_PMAPMD)
ctrl2 |= (1 << MDIO_PMAPMD_CTRL1_LBACK_LBN);
else
ctrl2 &= ~(1 << MDIO_PMAPMD_CTRL1_LBACK_LBN);
if (ctrl1 != ctrl2)
mdio_clause45_write(efx, phy_id, MDIO_MMD_PMAPMD,
MDIO_MMDREG_CTRL1, ctrl2);
/* Handle (with debouncing) PCS loopback */
ctrl1 = ctrl2 = mdio_clause45_read(efx, phy_id, MDIO_MMD_PCS,
MDIO_MMDREG_CTRL1);
if (efx->loopback_mode == LOOPBACK_PCS)
ctrl2 |= (1 << MDIO_MMDREG_CTRL1_LBACK_LBN);
else
ctrl2 &= ~(1 << MDIO_MMDREG_CTRL1_LBACK_LBN);
if (ctrl1 != ctrl2)
mdio_clause45_write(efx, phy_id, MDIO_MMD_PCS,
MDIO_MMDREG_CTRL1, ctrl2);
/* Handle (with debouncing) PHYXS network loopback */
ctrl1 = ctrl2 = mdio_clause45_read(efx, phy_id, MDIO_MMD_PHYXS,
MDIO_MMDREG_CTRL1);
if (efx->loopback_mode == LOOPBACK_NETWORK)
ctrl2 |= (1 << MDIO_MMDREG_CTRL1_LBACK_LBN);
else
ctrl2 &= ~(1 << MDIO_MMDREG_CTRL1_LBACK_LBN);
if (ctrl1 != ctrl2)
mdio_clause45_write(efx, phy_id, MDIO_MMD_PHYXS,
MDIO_MMDREG_CTRL1, ctrl2);
}
/**
* mdio_clause45_get_settings - Read (some of) the PHY settings over MDIO.
* @efx: Efx NIC

22
drivers/net/sfc/mdio_10g.h
View File

@ -44,11 +44,16 @@
#define MDIO_MMDREG_DEVS1 (6)
#define MDIO_MMDREG_CTRL2 (7)
#define MDIO_MMDREG_STAT2 (8)
#define MDIO_MMDREG_TXDIS (9)
/* Bits in MMDREG_CTRL1 */
/* Reset */
#define MDIO_MMDREG_CTRL1_RESET_LBN (15)
#define MDIO_MMDREG_CTRL1_RESET_WIDTH (1)
/* Loopback */
/* Loopback bit for WIS, PCS, PHYSX and DTEXS */
#define MDIO_MMDREG_CTRL1_LBACK_LBN (14)
#define MDIO_MMDREG_CTRL1_LBACK_WIDTH (1)
/* Bits in MMDREG_STAT1 */
#define MDIO_MMDREG_STAT1_FAULT_LBN (7)
@ -56,6 +61,9 @@
/* Link state */
#define MDIO_MMDREG_STAT1_LINK_LBN (2)
#define MDIO_MMDREG_STAT1_LINK_WIDTH (1)
/* Low power ability */
#define MDIO_MMDREG_STAT1_LPABLE_LBN (1)
#define MDIO_MMDREG_STAT1_LPABLE_WIDTH (1)
/* Bits in ID reg */
#define MDIO_ID_REV(_id32) (_id32 & 0xf)
@ -76,6 +84,14 @@
#define MDIO_MMDREG_STAT2_PRESENT_LBN (14)
#define MDIO_MMDREG_STAT2_PRESENT_WIDTH (2)
/* Bits in MMDREG_TXDIS */
#define MDIO_MMDREG_TXDIS_GLOBAL_LBN (0)
#define MDIO_MMDREG_TXDIS_GLOBAL_WIDTH (1)
/* MMD-specific bits, ordered by MMD, then register */
#define MDIO_PMAPMD_CTRL1_LBACK_LBN (0)
#define MDIO_PMAPMD_CTRL1_LBACK_WIDTH (1)
/* PMA type (4 bits) */
#define MDIO_PMAPMD_CTRL2_10G_CX4 (0x0)
#define MDIO_PMAPMD_CTRL2_10G_EW (0x1)
@ -217,6 +233,12 @@ int mdio_clause45_check_mmds(struct efx_nic *efx,
extern int mdio_clause45_links_ok(struct efx_nic *efx,
unsigned int mmd_mask);
/* Generic transmit disable support though PMAPMD */
extern void mdio_clause45_transmit_disable(struct efx_nic *efx);
/* Generic part of reconfigure: set/clear loopback bits */
extern void mdio_clause45_phy_reconfigure(struct efx_nic *efx);
/* Read (some of) the PHY settings over MDIO */
extern void mdio_clause45_get_settings(struct efx_nic *efx,
struct ethtool_cmd *ecmd);

14
drivers/net/sfc/net_driver.h
View File

@ -448,6 +448,9 @@ struct efx_board {
struct efx_blinker blinker;
};
#define STRING_TABLE_LOOKUP(val, member) \
member ## _names[val]
enum efx_int_mode {
/* Be careful if altering to correct macro below */
EFX_INT_MODE_MSIX = 0,
@ -520,6 +523,7 @@ enum efx_fc_type {
* @check_hw: Check hardware
* @reset_xaui: Reset XAUI side of PHY for (software sequenced reset)
* @mmds: MMD presence mask
* @loopbacks: Supported loopback modes mask
*/
struct efx_phy_operations {
int (*init) (struct efx_nic *efx);
@ -529,6 +533,7 @@ struct efx_phy_operations {
int (*check_hw) (struct efx_nic *efx);
void (*reset_xaui) (struct efx_nic *efx);
int mmds;
unsigned loopbacks;
};
/*
@ -667,6 +672,7 @@ union efx_multicast_hash {
* @phy_op: PHY interface
* @phy_data: PHY private data (including PHY-specific stats)
* @mii: PHY interface
* @tx_disabled: PHY transmitter turned off
* @link_up: Link status
* @link_options: Link options (MII/GMII format)
* @n_link_state_changes: Number of times the link has changed state
@ -674,6 +680,9 @@ union efx_multicast_hash {
* @multicast_hash: Multicast hash table
* @flow_control: Flow control flags - separate RX/TX so can't use link_options
* @reconfigure_work: work item for dealing with PHY events
* @loopback_mode: Loopback status
* @loopback_modes: Supported loopback mode bitmask
* @loopback_selftest: Offline self-test private state
*
* The @priv field of the corresponding &struct net_device points to
* this.
@ -733,6 +742,7 @@ struct efx_nic {
struct efx_phy_operations *phy_op;
void *phy_data;
struct mii_if_info mii;
unsigned tx_disabled;
int link_up;
unsigned int link_options;
@ -744,6 +754,10 @@ struct efx_nic {
struct work_struct reconfigure_work;
atomic_t rx_reset;
enum efx_loopback_mode loopback_mode;
unsigned int loopback_modes;
void *loopback_selftest;
};
/**

10
drivers/net/sfc/rx.c
View File

@ -19,6 +19,7 @@
#include "rx.h"
#include "efx.h"
#include "falcon.h"
#include "selftest.h"
#include "workarounds.h"
/* Number of RX descriptors pushed at once. */
@ -683,6 +684,15 @@ void __efx_rx_packet(struct efx_channel *channel,
struct sk_buff *skb;
int lro = efx->net_dev->features & NETIF_F_LRO;
/* If we're in loopback test, then pass the packet directly to the
* loopback layer, and free the rx_buf here
*/
if (unlikely(efx->loopback_selftest)) {
efx_loopback_rx_packet(efx, rx_buf->data, rx_buf->len);
efx_free_rx_buffer(efx, rx_buf);
goto done;
}
if (rx_buf->skb) {
prefetch(skb_shinfo(rx_buf->skb));

717
drivers/net/sfc/selftest.c Normal file
View File

@ -0,0 +1,717 @@
/****************************************************************************
* Driver for Solarflare Solarstorm network controllers and boards
* Copyright 2005-2006 Fen Systems Ltd.
* Copyright 2006-2008 Solarflare Communications Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation, incorporated herein by reference.
*/
#include <linux/netdevice.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/kernel_stat.h>
#include <linux/pci.h>
#include <linux/ethtool.h>
#include <linux/ip.h>
#include <linux/in.h>
#include <linux/udp.h>
#include <linux/rtnetlink.h>
#include <asm/io.h>
#include "net_driver.h"
#include "ethtool.h"
#include "efx.h"
#include "falcon.h"
#include "selftest.h"
#include "boards.h"
#include "workarounds.h"
#include "mac.h"
/*
* Loopback test packet structure
*
* The self-test should stress every RSS vector, and unfortunately
* Falcon only performs RSS on TCP/UDP packets.
*/
struct efx_loopback_payload {
struct ethhdr header;
struct iphdr ip;
struct udphdr udp;
__be16 iteration;
const char msg[64];
} __attribute__ ((packed));
/* Loopback test source MAC address */
static const unsigned char payload_source[ETH_ALEN] = {
0x00, 0x0f, 0x53, 0x1b, 0x1b, 0x1b,
};
static const char *payload_msg =
"Hello world! This is an Efx loopback test in progress!";
/**
* efx_selftest_state - persistent state during a selftest
* @flush: Drop all packets in efx_loopback_rx_packet
* @packet_count: Number of packets being used in this test
* @skbs: An array of skbs transmitted
* @rx_good: RX good packet count
* @rx_bad: RX bad packet count
* @payload: Payload used in tests
*/
struct efx_selftest_state {
int flush;
int packet_count;
struct sk_buff **skbs;
atomic_t rx_good;
atomic_t rx_bad;
struct efx_loopback_payload payload;
};
/**************************************************************************
*
* Configurable values
*
**************************************************************************/
/* Level of loopback testing
*
* The maximum packet burst length is 16**(n-1), i.e.
*
* - Level 0 : no packets
* - Level 1 : 1 packet
* - Level 2 : 17 packets (1 * 1 packet, 1 * 16 packets)
* - Level 3 : 273 packets (1 * 1 packet, 1 * 16 packet, 1 * 256 packets)
*
*/
static unsigned int loopback_test_level = 3;
/**************************************************************************
*
* Interrupt and event queue testing
*
**************************************************************************/
/* Test generation and receipt of interrupts */
static int efx_test_interrupts(struct efx_nic *efx,
struct efx_self_tests *tests)
{
struct efx_channel *channel;
EFX_LOG(efx, "testing interrupts\n");
tests->interrupt = -1;
/* Reset interrupt flag */
efx->last_irq_cpu = -1;
smp_wmb();
/* ACK each interrupting event queue. Receiving an interrupt due to
* traffic before a test event is raised is considered a pass */
efx_for_each_channel_with_interrupt(channel, efx) {
if (channel->work_pending)
efx_process_channel_now(channel);
if (efx->last_irq_cpu >= 0)
goto success;
}
falcon_generate_interrupt(efx);
/* Wait for arrival of test interrupt. */
EFX_LOG(efx, "waiting for test interrupt\n");
schedule_timeout_uninterruptible(HZ / 10);
if (efx->last_irq_cpu >= 0)
goto success;
EFX_ERR(efx, "timed out waiting for interrupt\n");
return -ETIMEDOUT;
success:
EFX_LOG(efx, "test interrupt (mode %d) seen on CPU%d\n",
efx->interrupt_mode, efx->last_irq_cpu);
tests->interrupt = 1;
return 0;
}
/* Test generation and receipt of non-interrupting events */
static int efx_test_eventq(struct efx_channel *channel,
struct efx_self_tests *tests)
{
unsigned int magic;
/* Channel specific code, limited to 20 bits */
magic = (0x00010150 + channel->channel);
EFX_LOG(channel->efx, "channel %d testing event queue with code %x\n",
channel->channel, magic);
tests->eventq_dma[channel->channel] = -1;
tests->eventq_int[channel->channel] = 1; /* fake pass */
tests->eventq_poll[channel->channel] = 1; /* fake pass */
/* Reset flag and zero magic word */
channel->efx->last_irq_cpu = -1;
channel->eventq_magic = 0;
smp_wmb();
falcon_generate_test_event(channel, magic);
udelay(1);
efx_process_channel_now(channel);
if (channel->eventq_magic != magic) {
EFX_ERR(channel->efx, "channel %d failed to see test event\n",
channel->channel);
return -ETIMEDOUT;
} else {
tests->eventq_dma[channel->channel] = 1;
}
return 0;
}
/* Test generation and receipt of interrupting events */
static int efx_test_eventq_irq(struct efx_channel *channel,
struct efx_self_tests *tests)
{
unsigned int magic, count;
/* Channel specific code, limited to 20 bits */
magic = (0x00010150 + channel->channel);
EFX_LOG(channel->efx, "channel %d testing event queue with code %x\n",
channel->channel, magic);
tests->eventq_dma[channel->channel] = -1;
tests->eventq_int[channel->channel] = -1;
tests->eventq_poll[channel->channel] = -1;
/* Reset flag and zero magic word */
channel->efx->last_irq_cpu = -1;
channel->eventq_magic = 0;
smp_wmb();
falcon_generate_test_event(channel, magic);
/* Wait for arrival of interrupt */
count = 0;
do {
schedule_timeout_uninterruptible(HZ / 100);
if (channel->work_pending)
efx_process_channel_now(channel);
if (channel->eventq_magic == magic)
goto eventq_ok;
} while (++count < 2);
EFX_ERR(channel->efx, "channel %d timed out waiting for event queue\n",
channel->channel);
/* See if interrupt arrived */
if (channel->efx->last_irq_cpu >= 0) {
EFX_ERR(channel->efx, "channel %d saw interrupt on CPU%d "
"during event queue test\n", channel->channel,
raw_smp_processor_id());
tests->eventq_int[channel->channel] = 1;
}
/* Check to see if event was received even if interrupt wasn't */
efx_process_channel_now(channel);
if (channel->eventq_magic == magic) {
EFX_ERR(channel->efx, "channel %d event was generated, but "
"failed to trigger an interrupt\n", channel->channel);
tests->eventq_dma[channel->channel] = 1;
}
return -ETIMEDOUT;
eventq_ok:
EFX_LOG(channel->efx, "channel %d event queue passed\n",
channel->channel);
tests->eventq_dma[channel->channel] = 1;
tests->eventq_int[channel->channel] = 1;
tests->eventq_poll[channel->channel] = 1;
return 0;
}
/**************************************************************************
*
* PHY testing
*
**************************************************************************/
/* Check PHY presence by reading the PHY ID registers */
static int efx_test_phy(struct efx_nic *efx,
struct efx_self_tests *tests)
{
u16 physid1, physid2;
struct mii_if_info *mii = &efx->mii;
struct net_device *net_dev = efx->net_dev;
if (efx->phy_type == PHY_TYPE_NONE)
return 0;
EFX_LOG(efx, "testing PHY presence\n");
tests->phy_ok = -1;
physid1 = mii->mdio_read(net_dev, mii->phy_id, MII_PHYSID1);
physid2 = mii->mdio_read(net_dev, mii->phy_id, MII_PHYSID2);
if ((physid1 != 0x0000) && (physid1 != 0xffff) &&
(physid2 != 0x0000) && (physid2 != 0xffff)) {
EFX_LOG(efx, "found MII PHY %d ID 0x%x:%x\n",
mii->phy_id, physid1, physid2);
tests->phy_ok = 1;
return 0;
}
EFX_ERR(efx, "no MII PHY present with ID %d\n", mii->phy_id);
return -ENODEV;
}
/**************************************************************************
*
* Loopback testing
* NB Only one loopback test can be executing concurrently.
*
**************************************************************************/
/* Loopback test RX callback
* This is called for each received packet during loopback testing.
*/
void efx_loopback_rx_packet(struct efx_nic *efx,
const char *buf_ptr, int pkt_len)
{
struct efx_selftest_state *state = efx->loopback_selftest;
struct efx_loopback_payload *received;
struct efx_loopback_payload *payload;
BUG_ON(!buf_ptr);
/* If we are just flushing, then drop the packet */
if ((state == NULL) || state->flush)
return;
payload = &state->payload;
received = (struct efx_loopback_payload *)(char *) buf_ptr;
received->ip.saddr = payload->ip.saddr;
received->ip.check = payload->ip.check;
/* Check that header exists */
if (pkt_len < sizeof(received->header)) {
EFX_ERR(efx, "saw runt RX packet (length %d) in %s loopback "
"test\n", pkt_len, LOOPBACK_MODE(efx));
goto err;
}
/* Check that the ethernet header exists */
if (memcmp(&received->header, &payload->header, ETH_HLEN) != 0) {
EFX_ERR(efx, "saw non-loopback RX packet in %s loopback test\n",
LOOPBACK_MODE(efx));
goto err;
}
/* Check packet length */
if (pkt_len != sizeof(*payload)) {
EFX_ERR(efx, "saw incorrect RX packet length %d (wanted %d) in "
"%s loopback test\n", pkt_len, (int)sizeof(*payload),
LOOPBACK_MODE(efx));
goto err;
}
/* Check that IP header matches */
if (memcmp(&received->ip, &payload->ip, sizeof(payload->ip)) != 0) {
EFX_ERR(efx, "saw corrupted IP header in %s loopback test\n",
LOOPBACK_MODE(efx));
goto err;
}
/* Check that msg and padding matches */
if (memcmp(&received->msg, &payload->msg, sizeof(received->msg)) != 0) {
EFX_ERR(efx, "saw corrupted RX packet in %s loopback test\n",
LOOPBACK_MODE(efx));
goto err;
}
/* Check that iteration matches */
if (received->iteration != payload->iteration) {
EFX_ERR(efx, "saw RX packet from iteration %d (wanted %d) in "
"%s loopback test\n", ntohs(received->iteration),
ntohs(payload->iteration), LOOPBACK_MODE(efx));
goto err;
}
/* Increase correct RX count */
EFX_TRACE(efx, "got loopback RX in %s loopback test\n",
LOOPBACK_MODE(efx));
atomic_inc(&state->rx_good);
return;
err:
#ifdef EFX_ENABLE_DEBUG
if (atomic_read(&state->rx_bad) == 0) {
EFX_ERR(efx, "received packet:\n");
print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 0x10, 1,
buf_ptr, pkt_len, 0);
EFX_ERR(efx, "expected packet:\n");
print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 0x10, 1,
&state->payload, sizeof(state->payload), 0);
}
#endif
atomic_inc(&state->rx_bad);
}
/* Initialise an efx_selftest_state for a new iteration */
static void efx_iterate_state(struct efx_nic *efx)
{
struct efx_selftest_state *state = efx->loopback_selftest;
struct net_device *net_dev = efx->net_dev;
struct efx_loopback_payload *payload = &state->payload;
/* Initialise the layerII header */
memcpy(&payload->header.h_dest, net_dev->dev_addr, ETH_ALEN);
memcpy(&payload->header.h_source, &payload_source, ETH_ALEN);
payload->header.h_proto = htons(ETH_P_IP);
/* saddr set later and used as incrementing count */
payload->ip.daddr = htonl(INADDR_LOOPBACK);
payload->ip.ihl = 5;
payload->ip.check = htons(0xdead);
payload->ip.tot_len = htons(sizeof(*payload) - sizeof(struct ethhdr));
payload->ip.version = IPVERSION;
payload->ip.protocol = IPPROTO_UDP;
/* Initialise udp header */
payload->udp.source = 0;
payload->udp.len = htons(sizeof(*payload) - sizeof(struct ethhdr) -
sizeof(struct iphdr));
payload->udp.check = 0; /* checksum ignored */
/* Fill out payload */
payload->iteration = htons(ntohs(payload->iteration) + 1);
memcpy(&payload->msg, payload_msg, sizeof(payload_msg));
/* Fill out remaining state members */
atomic_set(&state->rx_good, 0);
atomic_set(&state->rx_bad, 0);
smp_wmb();
}
static int efx_tx_loopback(struct efx_tx_queue *tx_queue)
{
struct efx_nic *efx = tx_queue->efx;
struct efx_selftest_state *state = efx->loopback_selftest;
struct efx_loopback_payload *payload;
struct sk_buff *skb;
int i, rc;
/* Transmit N copies of buffer */
for (i = 0; i < state->packet_count; i++) {
/* Allocate an skb, holding an extra reference for
* transmit completion counting */
skb = alloc_skb(sizeof(state->payload), GFP_KERNEL);
if (!skb)
return -ENOMEM;
state->skbs[i] = skb;
skb_get(skb);
/* Copy the payload in, incrementing the source address to
* exercise the rss vectors */
payload = ((struct efx_loopback_payload *)
skb_put(skb, sizeof(state->payload)));
memcpy(payload, &state->payload, sizeof(state->payload));
payload->ip.saddr = htonl(INADDR_LOOPBACK | (i << 2));
/* Ensure everything we've written is visible to the
* interrupt handler. */
smp_wmb();
if (NET_DEV_REGISTERED(efx))
netif_tx_lock_bh(efx->net_dev);
rc = efx_xmit(efx, tx_queue, skb);
if (NET_DEV_REGISTERED(efx))
netif_tx_unlock_bh(efx->net_dev);
if (rc != NETDEV_TX_OK) {
EFX_ERR(efx, "TX queue %d could not transmit packet %d "
"of %d in %s loopback test\n", tx_queue->queue,
i + 1, state->packet_count, LOOPBACK_MODE(efx));
/* Defer cleaning up the other skbs for the caller */
kfree_skb(skb);
return -EPIPE;
}
}
return 0;
}
static int efx_rx_loopback(struct efx_tx_queue *tx_queue,
struct efx_loopback_self_tests *lb_tests)
{
struct efx_nic *efx = tx_queue->efx;
struct efx_selftest_state *state = efx->loopback_selftest;
struct sk_buff *skb;
int tx_done = 0, rx_good, rx_bad;
int i, rc = 0;
if (NET_DEV_REGISTERED(efx))
netif_tx_lock_bh(efx->net_dev);
/* Count the number of tx completions, and decrement the refcnt. Any
* skbs not already completed will be free'd when the queue is flushed */
for (i=0; i < state->packet_count; i++) {
skb = state->skbs[i];
if (skb && !skb_shared(skb))
++tx_done;
dev_kfree_skb_any(skb);
}
if (NET_DEV_REGISTERED(efx))
netif_tx_unlock_bh(efx->net_dev);
/* Check TX completion and received packet counts */
rx_good = atomic_read(&state->rx_good);
rx_bad = atomic_read(&state->rx_bad);
if (tx_done != state->packet_count) {
/* Don't free the skbs; they will be picked up on TX
* overflow or channel teardown.
*/
EFX_ERR(efx, "TX queue %d saw only %d out of an expected %d "
"TX completion events in %s loopback test\n",
tx_queue->queue, tx_done, state->packet_count,
LOOPBACK_MODE(efx));
rc = -ETIMEDOUT;
/* Allow to fall through so we see the RX errors as well */
}
/* We may always be up to a flush away from our desired packet total */
if (rx_good != state->packet_count) {
EFX_LOG(efx, "TX queue %d saw only %d out of an expected %d "
"received packets in %s loopback test\n",
tx_queue->queue, rx_good, state->packet_count,
LOOPBACK_MODE(efx));
rc = -ETIMEDOUT;
/* Fall through */
}
/* Update loopback test structure */
lb_tests->tx_sent[tx_queue->queue] += state->packet_count;
lb_tests->tx_done[tx_queue->queue] += tx_done;
lb_tests->rx_good += rx_good;
lb_tests->rx_bad += rx_bad;
return rc;
}
static int
efx_test_loopback(struct efx_tx_queue *tx_queue,
struct efx_loopback_self_tests *lb_tests)
{
struct efx_nic *efx = tx_queue->efx;
struct efx_selftest_state *state = efx->loopback_selftest;
struct efx_channel *channel;
int i, rc = 0;
for (i = 0; i < loopback_test_level; i++) {
/* Determine how many packets to send */
state->packet_count = (efx->type->txd_ring_mask + 1) / 3;
state->packet_count = min(1 << (i << 2), state->packet_count);
state->skbs = kzalloc(sizeof(state->skbs[0]) *
state->packet_count, GFP_KERNEL);
state->flush = 0;
EFX_LOG(efx, "TX queue %d testing %s loopback with %d "
"packets\n", tx_queue->queue, LOOPBACK_MODE(efx),
state->packet_count);
efx_iterate_state(efx);
rc = efx_tx_loopback(tx_queue);
/* NAPI polling is not enabled, so process channels synchronously */
schedule_timeout_uninterruptible(HZ / 50);
efx_for_each_channel_with_interrupt(channel, efx) {
if (channel->work_pending)
efx_process_channel_now(channel);
}
rc |= efx_rx_loopback(tx_queue, lb_tests);
kfree(state->skbs);
if (rc) {
/* Wait a while to ensure there are no packets
* floating around after a failure. */
schedule_timeout_uninterruptible(HZ / 10);
return rc;
}
}
EFX_LOG(efx, "TX queue %d passed %s loopback test with a burst length "
"of %d packets\n", tx_queue->queue, LOOPBACK_MODE(efx),
state->packet_count);
return rc;
}
static int efx_test_loopbacks(struct efx_nic *efx,
struct efx_self_tests *tests,
unsigned int loopback_modes)
{
struct efx_selftest_state *state = efx->loopback_selftest;
struct ethtool_cmd ecmd, ecmd_loopback;
struct efx_tx_queue *tx_queue;
enum efx_loopback_mode old_mode, mode;
int count, rc = 0, link_up;
rc = efx_ethtool_get_settings(efx->net_dev, &ecmd);
if (rc) {
EFX_ERR(efx, "could not get GMII settings\n");
return rc;
}
old_mode = efx->loopback_mode;
/* Disable autonegotiation for the purposes of loopback */
memcpy(&ecmd_loopback, &ecmd, sizeof(ecmd_loopback));
if (ecmd_loopback.autoneg == AUTONEG_ENABLE) {
ecmd_loopback.autoneg = AUTONEG_DISABLE;
ecmd_loopback.duplex = DUPLEX_FULL;
ecmd_loopback.speed = SPEED_10000;
}
rc = efx_ethtool_set_settings(efx->net_dev, &ecmd_loopback);
if (rc) {
EFX_ERR(efx, "could not disable autonegotiation\n");
goto out;
}
tests->loopback_speed = ecmd_loopback.speed;
tests->loopback_full_duplex = ecmd_loopback.duplex;
/* Test all supported loopback modes */
for (mode = LOOPBACK_NONE; mode < LOOPBACK_TEST_MAX; mode++) {
if (!(loopback_modes & (1 << mode)))
continue;
/* Move the port into the specified loopback mode. */
state->flush = 1;
efx->loopback_mode = mode;
efx_reconfigure_port(efx);
/* Wait for the PHY to signal the link is up */
count = 0;
do {
struct efx_channel *channel = &efx->channel[0];
falcon_check_xmac(efx);
schedule_timeout_uninterruptible(HZ / 10);
if (channel->work_pending)
efx_process_channel_now(channel);
/* Wait for PHY events to be processed */
flush_workqueue(efx->workqueue);
rmb();
/* efx->link_up can be 1 even if the XAUI link is down,
* (bug5762). Usually, it's not worth bothering with the
* difference, but for selftests, we need that extra
* guarantee that the link is really, really, up.
*/
link_up = efx->link_up;
if (!falcon_xaui_link_ok(efx))
link_up = 0;
} while ((++count < 20) && !link_up);
/* The link should now be up. If it isn't, there is no point
* in attempting a loopback test */
if (!link_up) {
EFX_ERR(efx, "loopback %s never came up\n",
LOOPBACK_MODE(efx));
rc = -EIO;
goto out;
}
EFX_LOG(efx, "link came up in %s loopback in %d iterations\n",
LOOPBACK_MODE(efx), count);
/* Test every TX queue */
efx_for_each_tx_queue(tx_queue, efx) {
rc |= efx_test_loopback(tx_queue,
&tests->loopback[mode]);
if (rc)
goto out;
}
}
out:
/* Take out of loopback and restore PHY settings */
state->flush = 1;
efx->loopback_mode = old_mode;
efx_ethtool_set_settings(efx->net_dev, &ecmd);
return rc;
}
/**************************************************************************
*
* Entry points
*
*************************************************************************/
/* Online (i.e. non-disruptive) testing
* This checks interrupt generation, event delivery and PHY presence. */
int efx_online_test(struct efx_nic *efx, struct efx_self_tests *tests)
{
struct efx_channel *channel;
int rc = 0;
EFX_LOG(efx, "performing online self-tests\n");
rc |= efx_test_interrupts(efx, tests);
efx_for_each_channel(channel, efx) {
if (channel->has_interrupt)
rc |= efx_test_eventq_irq(channel, tests);
else
rc |= efx_test_eventq(channel, tests);
}
rc |= efx_test_phy(efx, tests);
if (rc)
EFX_ERR(efx, "failed online self-tests\n");
return rc;
}
/* Offline (i.e. disruptive) testing
* This checks MAC and PHY loopback on the specified port. */
int efx_offline_test(struct efx_nic *efx,
struct efx_self_tests *tests, unsigned int loopback_modes)
{
struct efx_selftest_state *state;
int rc = 0;
EFX_LOG(efx, "performing offline self-tests\n");
/* Create a selftest_state structure to hold state for the test */
state = kzalloc(sizeof(*state), GFP_KERNEL);
if (state == NULL) {
rc = -ENOMEM;
goto out;
}
/* Set the port loopback_selftest member. From this point on
* all received packets will be dropped. Mark the state as
* "flushing" so all inflight packets are dropped */
BUG_ON(efx->loopback_selftest);
state->flush = 1;
efx->loopback_selftest = (void *)state;
rc = efx_test_loopbacks(efx, tests, loopback_modes);
efx->loopback_selftest = NULL;
wmb();
kfree(state);
out:
if (rc)
EFX_ERR(efx, "failed offline self-tests\n");
return rc;
}

50
drivers/net/sfc/selftest.h Normal file
View File

@ -0,0 +1,50 @@
/****************************************************************************
* Driver for Solarflare Solarstorm network controllers and boards
* Copyright 2005-2006 Fen Systems Ltd.
* Copyright 2006-2008 Solarflare Communications Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation, incorporated herein by reference.
*/
#ifndef EFX_SELFTEST_H
#define EFX_SELFTEST_H
#include "net_driver.h"
/*
* Self tests
*/
struct efx_loopback_self_tests {
int tx_sent[EFX_MAX_TX_QUEUES];
int tx_done[EFX_MAX_TX_QUEUES];
int rx_good;
int rx_bad;
};
/* Efx self test results
* For fields which are not counters, 1 indicates success and -1
* indicates failure.
*/
struct efx_self_tests {
int interrupt;
int eventq_dma[EFX_MAX_CHANNELS];
int eventq_int[EFX_MAX_CHANNELS];
int eventq_poll[EFX_MAX_CHANNELS];
int phy_ok;
int loopback_speed;
int loopback_full_duplex;
struct efx_loopback_self_tests loopback[LOOPBACK_TEST_MAX];
};
extern void efx_loopback_rx_packet(struct efx_nic *efx,
const char *buf_ptr, int pkt_len);
extern int efx_online_test(struct efx_nic *efx,
struct efx_self_tests *tests);
extern int efx_offline_test(struct efx_nic *efx,
struct efx_self_tests *tests,
unsigned int loopback_modes);
#endif /* EFX_SELFTEST_H */

81
drivers/net/sfc/tenxpress.c
View File

@ -24,6 +24,11 @@
MDIO_MMDREG_DEVS0_PCS | \
MDIO_MMDREG_DEVS0_PHYXS)
#define TENXPRESS_LOOPBACKS ((1 << LOOPBACK_PHYXS) | \
(1 << LOOPBACK_PCS) | \
(1 << LOOPBACK_PMAPMD) | \
(1 << LOOPBACK_NETWORK))
/* We complain if we fail to see the link partner as 10G capable this many
* times in a row (must be > 1 as sampling the autoneg. registers is racy)
*/
@ -72,6 +77,10 @@
#define PMA_PMD_BIST_RXD_LBN (1)
#define PMA_PMD_BIST_AFE_LBN (0)
/* Special Software reset register */
#define PMA_PMD_EXT_CTRL_REG 49152
#define PMA_PMD_EXT_SSR_LBN 15
#define BIST_MAX_DELAY (1000)
#define BIST_POLL_DELAY (10)
@ -86,6 +95,11 @@
#define PCS_TEST_SELECT_REG 0xd807 /* PRM 10.5.8 */
#define CLK312_EN_LBN 3
/* PHYXS registers */
#define PHYXS_TEST1 (49162)
#define LOOPBACK_NEAR_LBN (8)
#define LOOPBACK_NEAR_WIDTH (1)
/* Boot status register */
#define PCS_BOOT_STATUS_REG (0xd000)
#define PCS_BOOT_FATAL_ERR_LBN (0)
@ -106,7 +120,9 @@ MODULE_PARM_DESC(crc_error_reset_threshold,
struct tenxpress_phy_data {
enum tenxpress_state state;
enum efx_loopback_mode loopback_mode;
atomic_t bad_crc_count;
int tx_disabled;
int bad_lp_tries;
};
@ -227,6 +243,35 @@ static int tenxpress_phy_init(struct efx_nic *efx)
return rc;
}
static int tenxpress_special_reset(struct efx_nic *efx)
{
int rc, reg;
EFX_TRACE(efx, "%s\n", __func__);
/* Initiate reset */
reg = mdio_clause45_read(efx, efx->mii.phy_id,
MDIO_MMD_PMAPMD, PMA_PMD_EXT_CTRL_REG);
reg |= (1 << PMA_PMD_EXT_SSR_LBN);
mdio_clause45_write(efx, efx->mii.phy_id, MDIO_MMD_PMAPMD,
PMA_PMD_EXT_CTRL_REG, reg);
msleep(200);
/* Wait for the blocks to come out of reset */
rc = mdio_clause45_wait_reset_mmds(efx,
TENXPRESS_REQUIRED_DEVS);
if (rc < 0)
return rc;
/* Try and reconfigure the device */
rc = tenxpress_init(efx);
if (rc < 0)
return rc;
return 0;
}
static void tenxpress_set_bad_lp(struct efx_nic *efx, int bad_lp)
{
struct tenxpress_phy_data *pd = efx->phy_data;
@ -301,11 +346,46 @@ static int tenxpress_link_ok(struct efx_nic *efx, int check_lp)
return ok;
}
static void tenxpress_phyxs_loopback(struct efx_nic *efx)
{
int phy_id = efx->mii.phy_id;
int ctrl1, ctrl2;
ctrl1 = ctrl2 = mdio_clause45_read(efx, phy_id, MDIO_MMD_PHYXS,
PHYXS_TEST1);
if (efx->loopback_mode == LOOPBACK_PHYXS)
ctrl2 |= (1 << LOOPBACK_NEAR_LBN);
else
ctrl2 &= ~(1 << LOOPBACK_NEAR_LBN);
if (ctrl1 != ctrl2)
mdio_clause45_write(efx, phy_id, MDIO_MMD_PHYXS,
PHYXS_TEST1, ctrl2);
}
static void tenxpress_phy_reconfigure(struct efx_nic *efx)
{
struct tenxpress_phy_data *phy_data = efx->phy_data;
int loop_change = LOOPBACK_OUT_OF(phy_data, efx,
TENXPRESS_LOOPBACKS);
if (!tenxpress_state_is(efx, TENXPRESS_STATUS_NORMAL))
return;
/* When coming out of transmit disable, coming out of low power
* mode, or moving out of any PHY internal loopback mode,
* perform a special software reset */
if ((phy_data->tx_disabled && !efx->tx_disabled) ||
loop_change) {
(void) tenxpress_special_reset(efx);
falcon_reset_xaui(efx);
}
mdio_clause45_transmit_disable(efx);
mdio_clause45_phy_reconfigure(efx);
tenxpress_phyxs_loopback(efx);
phy_data->tx_disabled = efx->tx_disabled;
phy_data->loopback_mode = efx->loopback_mode;
efx->link_up = tenxpress_link_ok(efx, 0);
efx->link_options = GM_LPA_10000FULL;
}
@ -433,4 +513,5 @@ struct efx_phy_operations falcon_tenxpress_phy_ops = {
.clear_interrupt = tenxpress_phy_clear_interrupt,
.reset_xaui = tenxpress_reset_xaui,
.mmds = TENXPRESS_REQUIRED_DEVS,
.loopbacks = TENXPRESS_LOOPBACKS,
};

36
drivers/net/sfc/xfp_phy.c
View File

@ -24,6 +24,10 @@
MDIO_MMDREG_DEVS0_PMAPMD | \
MDIO_MMDREG_DEVS0_PHYXS)
#define XFP_LOOPBACKS ((1 << LOOPBACK_PCS) | \
(1 << LOOPBACK_PMAPMD) | \
(1 << LOOPBACK_NETWORK))
/****************************************************************************/
/* Quake-specific MDIO registers */
#define MDIO_QUAKE_LED0_REG (0xD006)
@ -35,6 +39,10 @@ void xfp_set_led(struct efx_nic *p, int led, int mode)
mode);
}
struct xfp_phy_data {
int tx_disabled;
};
#define XFP_MAX_RESET_TIME 500
#define XFP_RESET_WAIT 10
@ -72,18 +80,31 @@ static int xfp_reset_phy(struct efx_nic *efx)
static int xfp_phy_init(struct efx_nic *efx)
{
struct xfp_phy_data *phy_data;
u32 devid = mdio_clause45_read_id(efx, MDIO_MMD_PHYXS);
int rc;
phy_data = kzalloc(sizeof(struct xfp_phy_data), GFP_KERNEL);
efx->phy_data = (void *) phy_data;
EFX_INFO(efx, "XFP: PHY ID reg %x (OUI %x model %x revision"
" %x)\n", devid, MDIO_ID_OUI(devid), MDIO_ID_MODEL(devid),
MDIO_ID_REV(devid));
phy_data->tx_disabled = efx->tx_disabled;
rc = xfp_reset_phy(efx);
EFX_INFO(efx, "XFP: PHY init %s.\n",
rc ? "failed" : "successful");
if (rc < 0)
goto fail;
return 0;
fail:
kfree(efx->phy_data);
efx->phy_data = NULL;
return rc;
}
@ -110,6 +131,16 @@ static int xfp_phy_check_hw(struct efx_nic *efx)
static void xfp_phy_reconfigure(struct efx_nic *efx)
{
struct xfp_phy_data *phy_data = efx->phy_data;
/* Reset the PHY when moving from tx off to tx on */
if (phy_data->tx_disabled && !efx->tx_disabled)
xfp_reset_phy(efx);
mdio_clause45_transmit_disable(efx);
mdio_clause45_phy_reconfigure(efx);
phy_data->tx_disabled = efx->tx_disabled;
efx->link_up = xfp_link_ok(efx);
efx->link_options = GM_LPA_10000FULL;
}
@ -119,6 +150,10 @@ static void xfp_phy_fini(struct efx_nic *efx)
{
/* Clobber the LED if it was blinking */
efx->board_info.blink(efx, 0);
/* Free the context block */
kfree(efx->phy_data);
efx->phy_data = NULL;
}
struct efx_phy_operations falcon_xfp_phy_ops = {
@ -129,4 +164,5 @@ struct efx_phy_operations falcon_xfp_phy_ops = {
.clear_interrupt = xfp_phy_clear_interrupt,
.reset_xaui = efx_port_dummy_op_void,
.mmds = XFP_REQUIRED_DEVS,
.loopbacks = XFP_LOOPBACKS,
};