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Code Issues Releases Wiki Activity

sfc: remove phy_op indirection

Browse source 
Originally there were several implementations of PHY operations for the
 several different PHYs used on Falcon boards.  But Falcon is now in a
 separate driver, and all sfc NICs since then have had MCDI-managed PHYs.
Thus, there is no need to indirect through function pointers in
 efx->phy_op; we can simply call the efx_mcdi_phy_* functions directly.

This also hooks up these functions for EF100, which was previously using
 the dummy_phy_ops.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Edward Cree 2020-09-07 17:14:34 +01:00 committed by Jakub Kicinski
parent 7dcc9d8a40
commit c77289b433
9 changed files with 601 additions and 712 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

17
drivers/net/ethernet/sfc/efx.c
View file

@ -33,7 +33,7 @@
#include "selftest.h"
#include "sriov.h"
#include "mcdi.h"
#include "mcdi_port_common.h"
#include "mcdi_pcol.h"
#include "workarounds.h"
@ -149,23 +149,17 @@ static int efx_init_port(struct efx_nic *efx)
mutex_lock(&efx->mac_lock);
rc = efx->phy_op->init(efx);
if (rc)
goto fail1;
efx->port_initialized = true;
/* Ensure the PHY advertises the correct flow control settings */
rc = efx->phy_op->reconfigure(efx);
rc = efx_mcdi_port_reconfigure(efx);
if (rc && rc != -EPERM)
goto fail2;
goto fail;
mutex_unlock(&efx->mac_lock);
return 0;
fail2:
efx->phy_op->fini(efx);
fail1:
fail:
mutex_unlock(&efx->mac_lock);
return rc;
}
@ -177,7 +171,6 @@ static void efx_fini_port(struct efx_nic *efx)
if (!efx->port_initialized)
return;
efx->phy_op->fini(efx);
efx->port_initialized = false;
efx->link_state.up = false;
@ -1229,7 +1222,7 @@ static int efx_pm_thaw(struct device *dev)
goto fail;
mutex_lock(&efx->mac_lock);
efx->phy_op->reconfigure(efx);
efx_mcdi_port_reconfigure(efx);
mutex_unlock(&efx->mac_lock);
efx_start_all(efx);

26
drivers/net/ethernet/sfc/efx_common.c
View file

@ -19,6 +19,7 @@
#include "rx_common.h"
#include "tx_common.h"
#include "nic.h"
#include "mcdi_port_common.h"
#include "io.h"
#include "mcdi_pcol.h"
@ -544,7 +545,7 @@ void efx_start_all(struct efx_nic *efx)
* to poll now because we could have missed a change
*/
mutex_lock(&efx->mac_lock);
if (efx->phy_op->poll(efx))
if (efx_mcdi_phy_poll(efx))
efx_link_status_changed(efx);
mutex_unlock(&efx->mac_lock);
@ -714,9 +715,6 @@ void efx_reset_down(struct efx_nic *efx, enum reset_type method)
mutex_lock(&efx->mac_lock);
down_write(&efx->filter_sem);
mutex_lock(&efx->rss_lock);
if (efx->port_initialized && method != RESET_TYPE_INVISIBLE &&
method != RESET_TYPE_DATAPATH)
efx->phy_op->fini(efx);
efx->type->fini(efx);
}
@ -759,10 +757,7 @@ int efx_reset_up(struct efx_nic *efx, enum reset_type method, bool ok)
if (efx->port_initialized && method != RESET_TYPE_INVISIBLE &&
method != RESET_TYPE_DATAPATH) {
rc = efx->phy_op->init(efx);
if (rc)
goto fail;
rc = efx->phy_op->reconfigure(efx);
rc = efx_mcdi_port_reconfigure(efx);
if (rc && rc != -EPERM)
netif_err(efx, drv, efx->net_dev,
"could not restore PHY settings\n");
@ -959,7 +954,7 @@ void efx_schedule_reset(struct efx_nic *efx, enum reset_type type)
/**************************************************************************
*
* Dummy PHY/MAC operations
* Dummy NIC operations
*
* Can be used for some unimplemented operations
* Needed so all function pointers are valid and do not have to be tested
@ -972,18 +967,6 @@ int efx_port_dummy_op_int(struct efx_nic *efx)
}
void efx_port_dummy_op_void(struct efx_nic *efx) {}
static bool efx_port_dummy_op_poll(struct efx_nic *efx)
{
return false;
}
static const struct efx_phy_operations efx_dummy_phy_operations = {
.init = efx_port_dummy_op_int,
.reconfigure = efx_port_dummy_op_int,
.poll = efx_port_dummy_op_poll,
.fini = efx_port_dummy_op_void,
};
/**************************************************************************
*
* Data housekeeping
@ -1037,7 +1020,6 @@ int efx_init_struct(struct efx_nic *efx,
efx->rps_hash_table = kcalloc(EFX_ARFS_HASH_TABLE_SIZE,
sizeof(*efx->rps_hash_table), GFP_KERNEL);
#endif
efx->phy_op = &efx_dummy_phy_operations;
efx->mdio.dev = net_dev;
INIT_WORK(&efx->mac_work, efx_mac_work);
init_waitqueue_head(&efx->flush_wq);

44
drivers/net/ethernet/sfc/ethtool_common.c
View file

@ -15,6 +15,7 @@
#include "selftest.h"
#include "rx_common.h"
#include "ethtool_common.h"
#include "mcdi_port_common.h"
struct efx_sw_stat_desc {
const char *name;
@ -221,7 +222,7 @@ int efx_ethtool_set_pauseparam(struct net_device *net_dev,
efx_link_set_wanted_fc(efx, wanted_fc);
if (efx->link_advertising[0] != old_adv ||
(efx->wanted_fc ^ old_fc) & EFX_FC_AUTO) {
rc = efx->phy_op->reconfigure(efx);
rc = efx_mcdi_port_reconfigure(efx);
if (rc) {
netif_err(efx, drv, efx->net_dev,
"Unable to advertise requested flow "
@ -372,20 +373,15 @@ int efx_ethtool_fill_self_tests(struct efx_nic *efx,
efx_fill_test(n++, strings, data, &tests->registers,
"core", 0, "registers", NULL);
if (efx->phy_op->run_tests != NULL) {
EFX_WARN_ON_PARANOID(efx->phy_op->test_name == NULL);
for (i = 0; true; ++i) {
const char *name;
for (i = 0; true; ++i) {
const char *name;
EFX_WARN_ON_PARANOID(i >= EFX_MAX_PHY_TESTS);
name = efx_mcdi_phy_test_name(efx, i);
if (name == NULL)
break;
EFX_WARN_ON_PARANOID(i >= EFX_MAX_PHY_TESTS);
name = efx->phy_op->test_name(efx, i);
if (name == NULL)
break;
efx_fill_test(n++, strings, data, &tests->phy_ext[i],
"phy", 0, name, NULL);
}
efx_fill_test(n++, strings, data, &tests->phy_ext[i], "phy", 0, name, NULL);
}
/* Loopback tests */
@ -571,7 +567,7 @@ int efx_ethtool_get_link_ksettings(struct net_device *net_dev,
u32 supported;
mutex_lock(&efx->mac_lock);
efx->phy_op->get_link_ksettings(efx, cmd);
efx_mcdi_phy_get_link_ksettings(efx, cmd);
mutex_unlock(&efx->mac_lock);
/* Both MACs support pause frames (bidirectional and respond-only) */
@ -607,7 +603,7 @@ int efx_ethtool_set_link_ksettings(struct net_device *net_dev,
}
mutex_lock(&efx->mac_lock);
rc = efx->phy_op->set_link_ksettings(efx, cmd);
rc = efx_mcdi_phy_set_link_ksettings(efx, cmd);
mutex_unlock(&efx->mac_lock);
return rc;
}
@ -618,10 +614,8 @@ int efx_ethtool_get_fecparam(struct net_device *net_dev,
struct efx_nic *efx = netdev_priv(net_dev);
int rc;
if (!efx->phy_op || !efx->phy_op->get_fecparam)
return -EOPNOTSUPP;
mutex_lock(&efx->mac_lock);
rc = efx->phy_op->get_fecparam(efx, fecparam);
rc = efx_mcdi_phy_get_fecparam(efx, fecparam);
mutex_unlock(&efx->mac_lock);
return rc;
@ -633,10 +627,8 @@ int efx_ethtool_set_fecparam(struct net_device *net_dev,
struct efx_nic *efx = netdev_priv(net_dev);
int rc;
if (!efx->phy_op || !efx->phy_op->get_fecparam)
return -EOPNOTSUPP;
mutex_lock(&efx->mac_lock);
rc = efx->phy_op->set_fecparam(efx, fecparam);
rc = efx_mcdi_phy_set_fecparam(efx, fecparam);
mutex_unlock(&efx->mac_lock);
return rc;
@ -1332,11 +1324,8 @@ int efx_ethtool_get_module_eeprom(struct net_device *net_dev,
struct efx_nic *efx = netdev_priv(net_dev);
int ret;
if (!efx->phy_op || !efx->phy_op->get_module_eeprom)
return -EOPNOTSUPP;
mutex_lock(&efx->mac_lock);
ret = efx->phy_op->get_module_eeprom(efx, ee, data);
ret = efx_mcdi_phy_get_module_eeprom(efx, ee, data);
mutex_unlock(&efx->mac_lock);
return ret;
@ -1348,11 +1337,8 @@ int efx_ethtool_get_module_info(struct net_device *net_dev,
struct efx_nic *efx = netdev_priv(net_dev);
int ret;
if (!efx->phy_op || !efx->phy_op->get_module_info)
return -EOPNOTSUPP;
mutex_lock(&efx->mac_lock);
ret = efx->phy_op->get_module_info(efx, modinfo);
ret = efx_mcdi_phy_get_module_info(efx, modinfo);
mutex_unlock(&efx->mac_lock);
return ret;

1
drivers/net/ethernet/sfc/mcdi.h
View file

@ -355,7 +355,6 @@ int efx_mcdi_wol_filter_get_magic(struct efx_nic *efx, int *id_out);
int efx_mcdi_wol_filter_remove(struct efx_nic *efx, int id);
int efx_mcdi_wol_filter_reset(struct efx_nic *efx);
int efx_mcdi_flush_rxqs(struct efx_nic *efx);
int efx_mcdi_port_reconfigure(struct efx_nic *efx);
void efx_mcdi_process_link_change(struct efx_nic *efx, efx_qword_t *ev);
void efx_mcdi_mac_start_stats(struct efx_nic *efx);
void efx_mcdi_mac_stop_stats(struct efx_nic *efx);

593
drivers/net/ethernet/sfc/mcdi_port.c
View file

@ -70,592 +70,6 @@ static int efx_mcdi_mdio_write(struct net_device *net_dev,
return 0;
}
static int efx_mcdi_phy_probe(struct efx_nic *efx)
{
struct efx_mcdi_phy_data *phy_data;
MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
u32 caps;
int rc;
/* Initialise and populate phy_data */
phy_data = kzalloc(sizeof(*phy_data), GFP_KERNEL);
if (phy_data == NULL)
return -ENOMEM;
rc = efx_mcdi_get_phy_cfg(efx, phy_data);
if (rc != 0)
goto fail;
/* Read initial link advertisement */
BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
outbuf, sizeof(outbuf), NULL);
if (rc)
goto fail;
/* Fill out nic state */
efx->phy_data = phy_data;
efx->phy_type = phy_data->type;
efx->mdio_bus = phy_data->channel;
efx->mdio.prtad = phy_data->port;
efx->mdio.mmds = phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22);
efx->mdio.mode_support = 0;
if (phy_data->mmd_mask & (1 << MC_CMD_MMD_CLAUSE22))
efx->mdio.mode_support |= MDIO_SUPPORTS_C22;
if (phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22))
efx->mdio.mode_support |= MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
caps = MCDI_DWORD(outbuf, GET_LINK_OUT_CAP);
if (caps & (1 << MC_CMD_PHY_CAP_AN_LBN))
mcdi_to_ethtool_linkset(phy_data->media, caps,
efx->link_advertising);
else
phy_data->forced_cap = caps;
/* Assert that we can map efx -> mcdi loopback modes */
BUILD_BUG_ON(LOOPBACK_NONE != MC_CMD_LOOPBACK_NONE);
BUILD_BUG_ON(LOOPBACK_DATA != MC_CMD_LOOPBACK_DATA);
BUILD_BUG_ON(LOOPBACK_GMAC != MC_CMD_LOOPBACK_GMAC);
BUILD_BUG_ON(LOOPBACK_XGMII != MC_CMD_LOOPBACK_XGMII);
BUILD_BUG_ON(LOOPBACK_XGXS != MC_CMD_LOOPBACK_XGXS);
BUILD_BUG_ON(LOOPBACK_XAUI != MC_CMD_LOOPBACK_XAUI);
BUILD_BUG_ON(LOOPBACK_GMII != MC_CMD_LOOPBACK_GMII);
BUILD_BUG_ON(LOOPBACK_SGMII != MC_CMD_LOOPBACK_SGMII);
BUILD_BUG_ON(LOOPBACK_XGBR != MC_CMD_LOOPBACK_XGBR);
BUILD_BUG_ON(LOOPBACK_XFI != MC_CMD_LOOPBACK_XFI);
BUILD_BUG_ON(LOOPBACK_XAUI_FAR != MC_CMD_LOOPBACK_XAUI_FAR);
BUILD_BUG_ON(LOOPBACK_GMII_FAR != MC_CMD_LOOPBACK_GMII_FAR);
BUILD_BUG_ON(LOOPBACK_SGMII_FAR != MC_CMD_LOOPBACK_SGMII_FAR);
BUILD_BUG_ON(LOOPBACK_XFI_FAR != MC_CMD_LOOPBACK_XFI_FAR);
BUILD_BUG_ON(LOOPBACK_GPHY != MC_CMD_LOOPBACK_GPHY);
BUILD_BUG_ON(LOOPBACK_PHYXS != MC_CMD_LOOPBACK_PHYXS);
BUILD_BUG_ON(LOOPBACK_PCS != MC_CMD_LOOPBACK_PCS);
BUILD_BUG_ON(LOOPBACK_PMAPMD != MC_CMD_LOOPBACK_PMAPMD);
BUILD_BUG_ON(LOOPBACK_XPORT != MC_CMD_LOOPBACK_XPORT);
BUILD_BUG_ON(LOOPBACK_XGMII_WS != MC_CMD_LOOPBACK_XGMII_WS);
BUILD_BUG_ON(LOOPBACK_XAUI_WS != MC_CMD_LOOPBACK_XAUI_WS);
BUILD_BUG_ON(LOOPBACK_XAUI_WS_FAR != MC_CMD_LOOPBACK_XAUI_WS_FAR);
BUILD_BUG_ON(LOOPBACK_XAUI_WS_NEAR != MC_CMD_LOOPBACK_XAUI_WS_NEAR);
BUILD_BUG_ON(LOOPBACK_GMII_WS != MC_CMD_LOOPBACK_GMII_WS);
BUILD_BUG_ON(LOOPBACK_XFI_WS != MC_CMD_LOOPBACK_XFI_WS);
BUILD_BUG_ON(LOOPBACK_XFI_WS_FAR != MC_CMD_LOOPBACK_XFI_WS_FAR);
BUILD_BUG_ON(LOOPBACK_PHYXS_WS != MC_CMD_LOOPBACK_PHYXS_WS);
rc = efx_mcdi_loopback_modes(efx, &efx->loopback_modes);
if (rc != 0)
goto fail;
/* The MC indicates that LOOPBACK_NONE is a valid loopback mode,
* but by convention we don't */
efx->loopback_modes &= ~(1 << LOOPBACK_NONE);
/* Set the initial link mode */
efx_mcdi_phy_decode_link(
efx, &efx->link_state,
MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED),
MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS),
MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL));
/* Record the initial FEC configuration (or nearest approximation
* representable in the ethtool configuration space)
*/
efx->fec_config = mcdi_fec_caps_to_ethtool(caps,
efx->link_state.speed == 25000 ||
efx->link_state.speed == 50000);
/* Default to Autonegotiated flow control if the PHY supports it */
efx->wanted_fc = EFX_FC_RX | EFX_FC_TX;
if (phy_data->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
efx->wanted_fc |= EFX_FC_AUTO;
efx_link_set_wanted_fc(efx, efx->wanted_fc);
return 0;
fail:
kfree(phy_data);
return rc;
}
static void efx_mcdi_phy_remove(struct efx_nic *efx)
{
struct efx_mcdi_phy_data *phy_data = efx->phy_data;
efx->phy_data = NULL;
kfree(phy_data);
}
static void efx_mcdi_phy_get_link_ksettings(struct efx_nic *efx,
struct ethtool_link_ksettings *cmd)
{
struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
int rc;
cmd->base.speed = efx->link_state.speed;
cmd->base.duplex = efx->link_state.fd;
cmd->base.port = mcdi_to_ethtool_media(phy_cfg->media);
cmd->base.phy_address = phy_cfg->port;
cmd->base.autoneg = !!(efx->link_advertising[0] & ADVERTISED_Autoneg);
cmd->base.mdio_support = (efx->mdio.mode_support &
(MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22));
mcdi_to_ethtool_linkset(phy_cfg->media, phy_cfg->supported_cap,
cmd->link_modes.supported);
memcpy(cmd->link_modes.advertising, efx->link_advertising,
sizeof(__ETHTOOL_DECLARE_LINK_MODE_MASK()));
BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
outbuf, sizeof(outbuf), NULL);
if (rc)
return;
mcdi_to_ethtool_linkset(phy_cfg->media,
MCDI_DWORD(outbuf, GET_LINK_OUT_LP_CAP),
cmd->link_modes.lp_advertising);
}
static int
efx_mcdi_phy_set_link_ksettings(struct efx_nic *efx,
const struct ethtool_link_ksettings *cmd)
{
struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
u32 caps;
int rc;
if (cmd->base.autoneg) {
caps = (ethtool_linkset_to_mcdi_cap(cmd->link_modes.advertising) |
1 << MC_CMD_PHY_CAP_AN_LBN);
} else if (cmd->base.duplex) {
switch (cmd->base.speed) {
case 10: caps = 1 << MC_CMD_PHY_CAP_10FDX_LBN; break;
case 100: caps = 1 << MC_CMD_PHY_CAP_100FDX_LBN; break;
case 1000: caps = 1 << MC_CMD_PHY_CAP_1000FDX_LBN; break;
case 10000: caps = 1 << MC_CMD_PHY_CAP_10000FDX_LBN; break;
case 40000: caps = 1 << MC_CMD_PHY_CAP_40000FDX_LBN; break;
case 100000: caps = 1 << MC_CMD_PHY_CAP_100000FDX_LBN; break;
case 25000: caps = 1 << MC_CMD_PHY_CAP_25000FDX_LBN; break;
case 50000: caps = 1 << MC_CMD_PHY_CAP_50000FDX_LBN; break;
default: return -EINVAL;
}
} else {
switch (cmd->base.speed) {
case 10: caps = 1 << MC_CMD_PHY_CAP_10HDX_LBN; break;
case 100: caps = 1 << MC_CMD_PHY_CAP_100HDX_LBN; break;
case 1000: caps = 1 << MC_CMD_PHY_CAP_1000HDX_LBN; break;
default: return -EINVAL;
}
}
caps |= ethtool_fec_caps_to_mcdi(efx->fec_config);
rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx),
efx->loopback_mode, 0);
if (rc)
return rc;
if (cmd->base.autoneg) {
efx_link_set_advertising(efx, cmd->link_modes.advertising);
phy_cfg->forced_cap = 0;
} else {
efx_link_clear_advertising(efx);
phy_cfg->forced_cap = caps;
}
return 0;
}
static int efx_mcdi_phy_set_fecparam(struct efx_nic *efx,
const struct ethtool_fecparam *fec)
{
struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
u32 caps;
int rc;
/* Work out what efx_mcdi_phy_set_link_ksettings() would produce from
* saved advertising bits
*/
if (test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, efx->link_advertising))
caps = (ethtool_linkset_to_mcdi_cap(efx->link_advertising) |
1 << MC_CMD_PHY_CAP_AN_LBN);
else
caps = phy_cfg->forced_cap;
caps |= ethtool_fec_caps_to_mcdi(fec->fec);
rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx),
efx->loopback_mode, 0);
if (rc)
return rc;
/* Record the new FEC setting for subsequent set_link calls */
efx->fec_config = fec->fec;
return 0;
}
static const char *const mcdi_sft9001_cable_diag_names[] = {
"cable.pairA.length",
"cable.pairB.length",
"cable.pairC.length",
"cable.pairD.length",
"cable.pairA.status",
"cable.pairB.status",
"cable.pairC.status",
"cable.pairD.status",
};
static int efx_mcdi_bist(struct efx_nic *efx, unsigned int bist_mode,
int *results)
{
unsigned int retry, i, count = 0;
size_t outlen;
u32 status;
MCDI_DECLARE_BUF(inbuf, MC_CMD_START_BIST_IN_LEN);
MCDI_DECLARE_BUF(outbuf, MC_CMD_POLL_BIST_OUT_SFT9001_LEN);
u8 *ptr;
int rc;
BUILD_BUG_ON(MC_CMD_START_BIST_OUT_LEN != 0);
MCDI_SET_DWORD(inbuf, START_BIST_IN_TYPE, bist_mode);
rc = efx_mcdi_rpc(efx, MC_CMD_START_BIST,
inbuf, MC_CMD_START_BIST_IN_LEN, NULL, 0, NULL);
if (rc)
goto out;
/* Wait up to 10s for BIST to finish */
for (retry = 0; retry < 100; ++retry) {
BUILD_BUG_ON(MC_CMD_POLL_BIST_IN_LEN != 0);
rc = efx_mcdi_rpc(efx, MC_CMD_POLL_BIST, NULL, 0,
outbuf, sizeof(outbuf), &outlen);
if (rc)
goto out;
status = MCDI_DWORD(outbuf, POLL_BIST_OUT_RESULT);
if (status != MC_CMD_POLL_BIST_RUNNING)
goto finished;
msleep(100);
}
rc = -ETIMEDOUT;
goto out;
finished:
results[count++] = (status == MC_CMD_POLL_BIST_PASSED) ? 1 : -1;
/* SFT9001 specific cable diagnostics output */
if (efx->phy_type == PHY_TYPE_SFT9001B &&
(bist_mode == MC_CMD_PHY_BIST_CABLE_SHORT ||
bist_mode == MC_CMD_PHY_BIST_CABLE_LONG)) {
ptr = MCDI_PTR(outbuf, POLL_BIST_OUT_SFT9001_CABLE_LENGTH_A);
if (status == MC_CMD_POLL_BIST_PASSED &&
outlen >= MC_CMD_POLL_BIST_OUT_SFT9001_LEN) {
for (i = 0; i < 8; i++) {
results[count + i] =
EFX_DWORD_FIELD(((efx_dword_t *)ptr)[i],
EFX_DWORD_0);
}
}
count += 8;
}
rc = count;
out:
return rc;
}
static int efx_mcdi_phy_run_tests(struct efx_nic *efx, int *results,
unsigned flags)
{
struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
u32 mode;
int rc;
if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) {
rc = efx_mcdi_bist(efx, MC_CMD_PHY_BIST, results);
if (rc < 0)
return rc;
results += rc;
}
/* If we support both LONG and SHORT, then run each in response to
* break or not. Otherwise, run the one we support */
mode = 0;
if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN)) {
if ((flags & ETH_TEST_FL_OFFLINE) &&
(phy_cfg->flags &
(1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN)))
mode = MC_CMD_PHY_BIST_CABLE_LONG;
else
mode = MC_CMD_PHY_BIST_CABLE_SHORT;
} else if (phy_cfg->flags &
(1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))
mode = MC_CMD_PHY_BIST_CABLE_LONG;
if (mode != 0) {
rc = efx_mcdi_bist(efx, mode, results);
if (rc < 0)
return rc;
results += rc;
}
return 0;
}
static const char *efx_mcdi_phy_test_name(struct efx_nic *efx,
unsigned int index)
{
struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) {
if (index == 0)
return "bist";
--index;
}
if (phy_cfg->flags & ((1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN) |
(1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))) {
if (index == 0)
return "cable";
--index;
if (efx->phy_type == PHY_TYPE_SFT9001B) {
if (index < ARRAY_SIZE(mcdi_sft9001_cable_diag_names))
return mcdi_sft9001_cable_diag_names[index];
index -= ARRAY_SIZE(mcdi_sft9001_cable_diag_names);
}
}
return NULL;
}
#define SFP_PAGE_SIZE 128
#define SFF_DIAG_TYPE_OFFSET 92
#define SFF_DIAG_ADDR_CHANGE BIT(2)
#define SFF_8079_NUM_PAGES 2
#define SFF_8472_NUM_PAGES 4
#define SFF_8436_NUM_PAGES 5
#define SFF_DMT_LEVEL_OFFSET 94
/** efx_mcdi_phy_get_module_eeprom_page() - Get a single page of module eeprom
* @efx: NIC context
* @page: EEPROM page number
* @data: Destination data pointer
* @offset: Offset in page to copy from in to data
* @space: Space available in data
*
* Return:
* >=0 - amount of data copied
* <0 - error
*/
static int efx_mcdi_phy_get_module_eeprom_page(struct efx_nic *efx,
unsigned int page,
u8 *data, ssize_t offset,
ssize_t space)
{
MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_MEDIA_INFO_OUT_LENMAX);
MCDI_DECLARE_BUF(inbuf, MC_CMD_GET_PHY_MEDIA_INFO_IN_LEN);
size_t outlen;
unsigned int payload_len;
unsigned int to_copy;
int rc;
if (offset > SFP_PAGE_SIZE)
return -EINVAL;
to_copy = min(space, SFP_PAGE_SIZE - offset);
MCDI_SET_DWORD(inbuf, GET_PHY_MEDIA_INFO_IN_PAGE, page);
rc = efx_mcdi_rpc_quiet(efx, MC_CMD_GET_PHY_MEDIA_INFO,
inbuf, sizeof(inbuf),
outbuf, sizeof(outbuf),
&outlen);
if (rc)
return rc;
if (outlen < (MC_CMD_GET_PHY_MEDIA_INFO_OUT_DATA_OFST +
SFP_PAGE_SIZE))
return -EIO;
payload_len = MCDI_DWORD(outbuf, GET_PHY_MEDIA_INFO_OUT_DATALEN);
if (payload_len != SFP_PAGE_SIZE)
return -EIO;
memcpy(data, MCDI_PTR(outbuf, GET_PHY_MEDIA_INFO_OUT_DATA) + offset,
to_copy);
return to_copy;
}
static int efx_mcdi_phy_get_module_eeprom_byte(struct efx_nic *efx,
unsigned int page,
u8 byte)
{
int rc;
u8 data;
rc = efx_mcdi_phy_get_module_eeprom_page(efx, page, &data, byte, 1);
if (rc == 1)
return data;
return rc;
}
static int efx_mcdi_phy_diag_type(struct efx_nic *efx)
{
/* Page zero of the EEPROM includes the diagnostic type at byte 92. */
return efx_mcdi_phy_get_module_eeprom_byte(efx, 0,
SFF_DIAG_TYPE_OFFSET);
}
static int efx_mcdi_phy_sff_8472_level(struct efx_nic *efx)
{
/* Page zero of the EEPROM includes the DMT level at byte 94. */
return efx_mcdi_phy_get_module_eeprom_byte(efx, 0,
SFF_DMT_LEVEL_OFFSET);
}
static u32 efx_mcdi_phy_module_type(struct efx_nic *efx)
{
struct efx_mcdi_phy_data *phy_data = efx->phy_data;
if (phy_data->media != MC_CMD_MEDIA_QSFP_PLUS)
return phy_data->media;
/* A QSFP+ NIC may actually have an SFP+ module attached.
* The ID is page 0, byte 0.
*/
switch (efx_mcdi_phy_get_module_eeprom_byte(efx, 0, 0)) {
case 0x3:
return MC_CMD_MEDIA_SFP_PLUS;
case 0xc:
case 0xd:
return MC_CMD_MEDIA_QSFP_PLUS;
default:
return 0;
}
}
static int efx_mcdi_phy_get_module_eeprom(struct efx_nic *efx,
struct ethtool_eeprom *ee, u8 *data)
{
int rc;
ssize_t space_remaining = ee->len;
unsigned int page_off;
bool ignore_missing;
int num_pages;
int page;
switch (efx_mcdi_phy_module_type(efx)) {
case MC_CMD_MEDIA_SFP_PLUS:
num_pages = efx_mcdi_phy_sff_8472_level(efx) > 0 ?
SFF_8472_NUM_PAGES : SFF_8079_NUM_PAGES;
page = 0;
ignore_missing = false;
break;
case MC_CMD_MEDIA_QSFP_PLUS:
num_pages = SFF_8436_NUM_PAGES;
page = -1; /* We obtain the lower page by asking for -1. */
ignore_missing = true; /* Ignore missing pages after page 0. */
break;
default:
return -EOPNOTSUPP;
}
page_off = ee->offset % SFP_PAGE_SIZE;
page += ee->offset / SFP_PAGE_SIZE;
while (space_remaining && (page < num_pages)) {
rc = efx_mcdi_phy_get_module_eeprom_page(efx, page,
data, page_off,
space_remaining);
if (rc > 0) {
space_remaining -= rc;
data += rc;
page_off = 0;
page++;
} else if (rc == 0) {
space_remaining = 0;
} else if (ignore_missing && (page > 0)) {
int intended_size = SFP_PAGE_SIZE - page_off;
space_remaining -= intended_size;
if (space_remaining < 0) {
space_remaining = 0;
} else {
memset(data, 0, intended_size);
data += intended_size;
page_off = 0;
page++;
rc = 0;
}
} else {
return rc;
}
}
return 0;
}
static int efx_mcdi_phy_get_module_info(struct efx_nic *efx,
struct ethtool_modinfo *modinfo)
{
int sff_8472_level;
int diag_type;
switch (efx_mcdi_phy_module_type(efx)) {
case MC_CMD_MEDIA_SFP_PLUS:
sff_8472_level = efx_mcdi_phy_sff_8472_level(efx);
/* If we can't read the diagnostics level we have none. */
if (sff_8472_level < 0)
return -EOPNOTSUPP;
/* Check if this module requires the (unsupported) address
* change operation.
*/
diag_type = efx_mcdi_phy_diag_type(efx);
if ((sff_8472_level == 0) ||
(diag_type & SFF_DIAG_ADDR_CHANGE)) {
modinfo->type = ETH_MODULE_SFF_8079;
modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
} else {
modinfo->type = ETH_MODULE_SFF_8472;
modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
}
break;
case MC_CMD_MEDIA_QSFP_PLUS:
modinfo->type = ETH_MODULE_SFF_8436;
modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
break;
default:
return -EOPNOTSUPP;
}
return 0;
}
static const struct efx_phy_operations efx_mcdi_phy_ops = {
.probe = efx_mcdi_phy_probe,
.init = efx_port_dummy_op_int,
.reconfigure = efx_mcdi_port_reconfigure,
.poll = efx_mcdi_phy_poll,
.fini = efx_port_dummy_op_void,
.remove = efx_mcdi_phy_remove,
.get_link_ksettings = efx_mcdi_phy_get_link_ksettings,
.set_link_ksettings = efx_mcdi_phy_set_link_ksettings,
.get_fecparam = efx_mcdi_phy_get_fecparam,
.set_fecparam = efx_mcdi_phy_set_fecparam,
.test_alive = efx_mcdi_phy_test_alive,
.run_tests = efx_mcdi_phy_run_tests,
.test_name = efx_mcdi_phy_test_name,
.get_module_eeprom = efx_mcdi_phy_get_module_eeprom,
.get_module_info = efx_mcdi_phy_get_module_info,
};
u32 efx_mcdi_phy_get_caps(struct efx_nic *efx)
{
struct efx_mcdi_phy_data *phy_data = efx->phy_data;
@ -683,16 +97,13 @@ int efx_mcdi_port_probe(struct efx_nic *efx)
{
int rc;
/* Hook in PHY operations table */
efx->phy_op = &efx_mcdi_phy_ops;
/* Set up MDIO structure for PHY */
efx->mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
efx->mdio.mdio_read = efx_mcdi_mdio_read;
efx->mdio.mdio_write = efx_mcdi_mdio_write;
/* Fill out MDIO structure, loopback modes, and initial link state */
rc = efx->phy_op->probe(efx);
rc = efx_mcdi_phy_probe(efx);
if (rc != 0)
return rc;
@ -701,6 +112,6 @@ int efx_mcdi_port_probe(struct efx_nic *efx)
void efx_mcdi_port_remove(struct efx_nic *efx)
{
efx->phy_op->remove(efx);
efx_mcdi_phy_remove(efx);
efx_mcdi_mac_fini_stats(efx);
}

560
drivers/net/ethernet/sfc/mcdi_port_common.c
View file

@ -404,6 +404,196 @@ bool efx_mcdi_phy_poll(struct efx_nic *efx)
return !efx_link_state_equal(&efx->link_state, &old_state);
}
int efx_mcdi_phy_probe(struct efx_nic *efx)
{
struct efx_mcdi_phy_data *phy_data;
MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
u32 caps;
int rc;
/* Initialise and populate phy_data */
phy_data = kzalloc(sizeof(*phy_data), GFP_KERNEL);
if (phy_data == NULL)
return -ENOMEM;
rc = efx_mcdi_get_phy_cfg(efx, phy_data);
if (rc != 0)
goto fail;
/* Read initial link advertisement */
BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
outbuf, sizeof(outbuf), NULL);
if (rc)
goto fail;
/* Fill out nic state */
efx->phy_data = phy_data;
efx->phy_type = phy_data->type;
efx->mdio_bus = phy_data->channel;
efx->mdio.prtad = phy_data->port;
efx->mdio.mmds = phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22);
efx->mdio.mode_support = 0;
if (phy_data->mmd_mask & (1 << MC_CMD_MMD_CLAUSE22))
efx->mdio.mode_support |= MDIO_SUPPORTS_C22;
if (phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22))
efx->mdio.mode_support |= MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
caps = MCDI_DWORD(outbuf, GET_LINK_OUT_CAP);
if (caps & (1 << MC_CMD_PHY_CAP_AN_LBN))
mcdi_to_ethtool_linkset(phy_data->media, caps,
efx->link_advertising);
else
phy_data->forced_cap = caps;
/* Assert that we can map efx -> mcdi loopback modes */
BUILD_BUG_ON(LOOPBACK_NONE != MC_CMD_LOOPBACK_NONE);
BUILD_BUG_ON(LOOPBACK_DATA != MC_CMD_LOOPBACK_DATA);
BUILD_BUG_ON(LOOPBACK_GMAC != MC_CMD_LOOPBACK_GMAC);
BUILD_BUG_ON(LOOPBACK_XGMII != MC_CMD_LOOPBACK_XGMII);
BUILD_BUG_ON(LOOPBACK_XGXS != MC_CMD_LOOPBACK_XGXS);
BUILD_BUG_ON(LOOPBACK_XAUI != MC_CMD_LOOPBACK_XAUI);
BUILD_BUG_ON(LOOPBACK_GMII != MC_CMD_LOOPBACK_GMII);
BUILD_BUG_ON(LOOPBACK_SGMII != MC_CMD_LOOPBACK_SGMII);
BUILD_BUG_ON(LOOPBACK_XGBR != MC_CMD_LOOPBACK_XGBR);
BUILD_BUG_ON(LOOPBACK_XFI != MC_CMD_LOOPBACK_XFI);
BUILD_BUG_ON(LOOPBACK_XAUI_FAR != MC_CMD_LOOPBACK_XAUI_FAR);
BUILD_BUG_ON(LOOPBACK_GMII_FAR != MC_CMD_LOOPBACK_GMII_FAR);
BUILD_BUG_ON(LOOPBACK_SGMII_FAR != MC_CMD_LOOPBACK_SGMII_FAR);
BUILD_BUG_ON(LOOPBACK_XFI_FAR != MC_CMD_LOOPBACK_XFI_FAR);
BUILD_BUG_ON(LOOPBACK_GPHY != MC_CMD_LOOPBACK_GPHY);
BUILD_BUG_ON(LOOPBACK_PHYXS != MC_CMD_LOOPBACK_PHYXS);
BUILD_BUG_ON(LOOPBACK_PCS != MC_CMD_LOOPBACK_PCS);
BUILD_BUG_ON(LOOPBACK_PMAPMD != MC_CMD_LOOPBACK_PMAPMD);
BUILD_BUG_ON(LOOPBACK_XPORT != MC_CMD_LOOPBACK_XPORT);
BUILD_BUG_ON(LOOPBACK_XGMII_WS != MC_CMD_LOOPBACK_XGMII_WS);
BUILD_BUG_ON(LOOPBACK_XAUI_WS != MC_CMD_LOOPBACK_XAUI_WS);
BUILD_BUG_ON(LOOPBACK_XAUI_WS_FAR != MC_CMD_LOOPBACK_XAUI_WS_FAR);
BUILD_BUG_ON(LOOPBACK_XAUI_WS_NEAR != MC_CMD_LOOPBACK_XAUI_WS_NEAR);
BUILD_BUG_ON(LOOPBACK_GMII_WS != MC_CMD_LOOPBACK_GMII_WS);
BUILD_BUG_ON(LOOPBACK_XFI_WS != MC_CMD_LOOPBACK_XFI_WS);
BUILD_BUG_ON(LOOPBACK_XFI_WS_FAR != MC_CMD_LOOPBACK_XFI_WS_FAR);
BUILD_BUG_ON(LOOPBACK_PHYXS_WS != MC_CMD_LOOPBACK_PHYXS_WS);
rc = efx_mcdi_loopback_modes(efx, &efx->loopback_modes);
if (rc != 0)
goto fail;
/* The MC indicates that LOOPBACK_NONE is a valid loopback mode,
* but by convention we don't */
efx->loopback_modes &= ~(1 << LOOPBACK_NONE);
/* Set the initial link mode */
efx_mcdi_phy_decode_link(
efx, &efx->link_state,
MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED),
MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS),
MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL));
/* Record the initial FEC configuration (or nearest approximation
* representable in the ethtool configuration space)
*/
efx->fec_config = mcdi_fec_caps_to_ethtool(caps,
efx->link_state.speed == 25000 ||
efx->link_state.speed == 50000);
/* Default to Autonegotiated flow control if the PHY supports it */
efx->wanted_fc = EFX_FC_RX | EFX_FC_TX;
if (phy_data->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
efx->wanted_fc |= EFX_FC_AUTO;
efx_link_set_wanted_fc(efx, efx->wanted_fc);
return 0;
fail:
kfree(phy_data);
return rc;
}
void efx_mcdi_phy_remove(struct efx_nic *efx)
{
struct efx_mcdi_phy_data *phy_data = efx->phy_data;
efx->phy_data = NULL;
kfree(phy_data);
}
void efx_mcdi_phy_get_link_ksettings(struct efx_nic *efx, struct ethtool_link_ksettings *cmd)
{
struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
int rc;
cmd->base.speed = efx->link_state.speed;
cmd->base.duplex = efx->link_state.fd;
cmd->base.port = mcdi_to_ethtool_media(phy_cfg->media);
cmd->base.phy_address = phy_cfg->port;
cmd->base.autoneg = !!(efx->link_advertising[0] & ADVERTISED_Autoneg);
cmd->base.mdio_support = (efx->mdio.mode_support &
(MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22));
mcdi_to_ethtool_linkset(phy_cfg->media, phy_cfg->supported_cap,
cmd->link_modes.supported);
memcpy(cmd->link_modes.advertising, efx->link_advertising,
sizeof(__ETHTOOL_DECLARE_LINK_MODE_MASK()));
BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
outbuf, sizeof(outbuf), NULL);
if (rc)
return;
mcdi_to_ethtool_linkset(phy_cfg->media,
MCDI_DWORD(outbuf, GET_LINK_OUT_LP_CAP),
cmd->link_modes.lp_advertising);
}
int efx_mcdi_phy_set_link_ksettings(struct efx_nic *efx, const struct ethtool_link_ksettings *cmd)
{
struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
u32 caps;
int rc;
if (cmd->base.autoneg) {
caps = (ethtool_linkset_to_mcdi_cap(cmd->link_modes.advertising) |
1 << MC_CMD_PHY_CAP_AN_LBN);
} else if (cmd->base.duplex) {
switch (cmd->base.speed) {
case 10: caps = 1 << MC_CMD_PHY_CAP_10FDX_LBN; break;
case 100: caps = 1 << MC_CMD_PHY_CAP_100FDX_LBN; break;
case 1000: caps = 1 << MC_CMD_PHY_CAP_1000FDX_LBN; break;
case 10000: caps = 1 << MC_CMD_PHY_CAP_10000FDX_LBN; break;
case 40000: caps = 1 << MC_CMD_PHY_CAP_40000FDX_LBN; break;
case 100000: caps = 1 << MC_CMD_PHY_CAP_100000FDX_LBN; break;
case 25000: caps = 1 << MC_CMD_PHY_CAP_25000FDX_LBN; break;
case 50000: caps = 1 << MC_CMD_PHY_CAP_50000FDX_LBN; break;
default: return -EINVAL;
}
} else {
switch (cmd->base.speed) {
case 10: caps = 1 << MC_CMD_PHY_CAP_10HDX_LBN; break;
case 100: caps = 1 << MC_CMD_PHY_CAP_100HDX_LBN; break;
case 1000: caps = 1 << MC_CMD_PHY_CAP_1000HDX_LBN; break;
default: return -EINVAL;
}
}
caps |= ethtool_fec_caps_to_mcdi(efx->fec_config);
rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx),
efx->loopback_mode, 0);
if (rc)
return rc;
if (cmd->base.autoneg) {
efx_link_set_advertising(efx, cmd->link_modes.advertising);
phy_cfg->forced_cap = 0;
} else {
efx_link_clear_advertising(efx);
phy_cfg->forced_cap = caps;
}
return 0;
}
int efx_mcdi_phy_get_fecparam(struct efx_nic *efx, struct ethtool_fecparam *fec)
{
MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_V2_LEN);
@ -455,6 +645,32 @@ int efx_mcdi_phy_get_fecparam(struct efx_nic *efx, struct ethtool_fecparam *fec)
return 0;
}
int efx_mcdi_phy_set_fecparam(struct efx_nic *efx, const struct ethtool_fecparam *fec)
{
struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
u32 caps;
int rc;
/* Work out what efx_mcdi_phy_set_link_ksettings() would produce from
* saved advertising bits
*/
if (test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, efx->link_advertising))
caps = (ethtool_linkset_to_mcdi_cap(efx->link_advertising) |
1 << MC_CMD_PHY_CAP_AN_LBN);
else
caps = phy_cfg->forced_cap;
caps |= ethtool_fec_caps_to_mcdi(fec->fec);
rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx),
efx->loopback_mode, 0);
if (rc)
return rc;
/* Record the new FEC setting for subsequent set_link calls */
efx->fec_config = fec->fec;
return 0;
}
int efx_mcdi_phy_test_alive(struct efx_nic *efx)
{
MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_STATE_OUT_LEN);
@ -489,6 +705,350 @@ int efx_mcdi_port_reconfigure(struct efx_nic *efx)
efx->loopback_mode, 0);
}
static const char *const mcdi_sft9001_cable_diag_names[] = {
"cable.pairA.length",
"cable.pairB.length",
"cable.pairC.length",
"cable.pairD.length",
"cable.pairA.status",
"cable.pairB.status",
"cable.pairC.status",
"cable.pairD.status",
};
static int efx_mcdi_bist(struct efx_nic *efx, unsigned int bist_mode,
int *results)
{
unsigned int retry, i, count = 0;
size_t outlen;
u32 status;
MCDI_DECLARE_BUF(inbuf, MC_CMD_START_BIST_IN_LEN);
MCDI_DECLARE_BUF(outbuf, MC_CMD_POLL_BIST_OUT_SFT9001_LEN);
u8 *ptr;
int rc;
BUILD_BUG_ON(MC_CMD_START_BIST_OUT_LEN != 0);
MCDI_SET_DWORD(inbuf, START_BIST_IN_TYPE, bist_mode);
rc = efx_mcdi_rpc(efx, MC_CMD_START_BIST,
inbuf, MC_CMD_START_BIST_IN_LEN, NULL, 0, NULL);
if (rc)
goto out;
/* Wait up to 10s for BIST to finish */
for (retry = 0; retry < 100; ++retry) {
BUILD_BUG_ON(MC_CMD_POLL_BIST_IN_LEN != 0);
rc = efx_mcdi_rpc(efx, MC_CMD_POLL_BIST, NULL, 0,
outbuf, sizeof(outbuf), &outlen);
if (rc)
goto out;
status = MCDI_DWORD(outbuf, POLL_BIST_OUT_RESULT);
if (status != MC_CMD_POLL_BIST_RUNNING)
goto finished;
msleep(100);
}
rc = -ETIMEDOUT;
goto out;
finished:
results[count++] = (status == MC_CMD_POLL_BIST_PASSED) ? 1 : -1;
/* SFT9001 specific cable diagnostics output */
if (efx->phy_type == PHY_TYPE_SFT9001B &&
(bist_mode == MC_CMD_PHY_BIST_CABLE_SHORT ||
bist_mode == MC_CMD_PHY_BIST_CABLE_LONG)) {
ptr = MCDI_PTR(outbuf, POLL_BIST_OUT_SFT9001_CABLE_LENGTH_A);
if (status == MC_CMD_POLL_BIST_PASSED &&
outlen >= MC_CMD_POLL_BIST_OUT_SFT9001_LEN) {
for (i = 0; i < 8; i++) {
results[count + i] =
EFX_DWORD_FIELD(((efx_dword_t *)ptr)[i],
EFX_DWORD_0);
}
}
count += 8;
}
rc = count;
out:
return rc;
}
int efx_mcdi_phy_run_tests(struct efx_nic *efx, int *results, unsigned flags)
{
struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
u32 mode;
int rc;
if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) {
rc = efx_mcdi_bist(efx, MC_CMD_PHY_BIST, results);
if (rc < 0)
return rc;
results += rc;
}
/* If we support both LONG and SHORT, then run each in response to
* break or not. Otherwise, run the one we support */
mode = 0;
if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN)) {
if ((flags & ETH_TEST_FL_OFFLINE) &&
(phy_cfg->flags &
(1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN)))
mode = MC_CMD_PHY_BIST_CABLE_LONG;
else
mode = MC_CMD_PHY_BIST_CABLE_SHORT;
} else if (phy_cfg->flags &
(1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))
mode = MC_CMD_PHY_BIST_CABLE_LONG;
if (mode != 0) {
rc = efx_mcdi_bist(efx, mode, results);
if (rc < 0)
return rc;
results += rc;
}
return 0;
}
const char *efx_mcdi_phy_test_name(struct efx_nic *efx, unsigned int index)
{
struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) {
if (index == 0)
return "bist";
--index;
}
if (phy_cfg->flags & ((1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN) |
(1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))) {
if (index == 0)
return "cable";
--index;
if (efx->phy_type == PHY_TYPE_SFT9001B) {
if (index < ARRAY_SIZE(mcdi_sft9001_cable_diag_names))
return mcdi_sft9001_cable_diag_names[index];
index -= ARRAY_SIZE(mcdi_sft9001_cable_diag_names);
}
}
return NULL;
}
#define SFP_PAGE_SIZE 128
#define SFF_DIAG_TYPE_OFFSET 92
#define SFF_DIAG_ADDR_CHANGE BIT(2)
#define SFF_8079_NUM_PAGES 2
#define SFF_8472_NUM_PAGES 4
#define SFF_8436_NUM_PAGES 5
#define SFF_DMT_LEVEL_OFFSET 94
/** efx_mcdi_phy_get_module_eeprom_page() - Get a single page of module eeprom
* @efx: NIC context
* @page: EEPROM page number
* @data: Destination data pointer
* @offset: Offset in page to copy from in to data
* @space: Space available in data
*
* Return:
* >=0 - amount of data copied
* <0 - error
*/
static int efx_mcdi_phy_get_module_eeprom_page(struct efx_nic *efx,
unsigned int page,
u8 *data, ssize_t offset,
ssize_t space)
{
MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_MEDIA_INFO_OUT_LENMAX);
MCDI_DECLARE_BUF(inbuf, MC_CMD_GET_PHY_MEDIA_INFO_IN_LEN);
size_t outlen;
unsigned int payload_len;
unsigned int to_copy;
int rc;
if (offset > SFP_PAGE_SIZE)
return -EINVAL;
to_copy = min(space, SFP_PAGE_SIZE - offset);
MCDI_SET_DWORD(inbuf, GET_PHY_MEDIA_INFO_IN_PAGE, page);
rc = efx_mcdi_rpc_quiet(efx, MC_CMD_GET_PHY_MEDIA_INFO,
inbuf, sizeof(inbuf),
outbuf, sizeof(outbuf),
&outlen);
if (rc)
return rc;
if (outlen < (MC_CMD_GET_PHY_MEDIA_INFO_OUT_DATA_OFST +
SFP_PAGE_SIZE))
return -EIO;
payload_len = MCDI_DWORD(outbuf, GET_PHY_MEDIA_INFO_OUT_DATALEN);
if (payload_len != SFP_PAGE_SIZE)
return -EIO;
memcpy(data, MCDI_PTR(outbuf, GET_PHY_MEDIA_INFO_OUT_DATA) + offset,
to_copy);
return to_copy;
}
static int efx_mcdi_phy_get_module_eeprom_byte(struct efx_nic *efx,
unsigned int page,
u8 byte)
{
int rc;
u8 data;
rc = efx_mcdi_phy_get_module_eeprom_page(efx, page, &data, byte, 1);
if (rc == 1)
return data;
return rc;
}
static int efx_mcdi_phy_diag_type(struct efx_nic *efx)
{
/* Page zero of the EEPROM includes the diagnostic type at byte 92. */
return efx_mcdi_phy_get_module_eeprom_byte(efx, 0,
SFF_DIAG_TYPE_OFFSET);
}
static int efx_mcdi_phy_sff_8472_level(struct efx_nic *efx)
{
/* Page zero of the EEPROM includes the DMT level at byte 94. */
return efx_mcdi_phy_get_module_eeprom_byte(efx, 0,
SFF_DMT_LEVEL_OFFSET);
}
static u32 efx_mcdi_phy_module_type(struct efx_nic *efx)
{
struct efx_mcdi_phy_data *phy_data = efx->phy_data;
if (phy_data->media != MC_CMD_MEDIA_QSFP_PLUS)
return phy_data->media;
/* A QSFP+ NIC may actually have an SFP+ module attached.
* The ID is page 0, byte 0.
*/
switch (efx_mcdi_phy_get_module_eeprom_byte(efx, 0, 0)) {
case 0x3:
return MC_CMD_MEDIA_SFP_PLUS;
case 0xc:
case 0xd:
return MC_CMD_MEDIA_QSFP_PLUS;
default:
return 0;
}
}
int efx_mcdi_phy_get_module_eeprom(struct efx_nic *efx, struct ethtool_eeprom *ee, u8 *data)
{
int rc;
ssize_t space_remaining = ee->len;
unsigned int page_off;
bool ignore_missing;
int num_pages;
int page;
switch (efx_mcdi_phy_module_type(efx)) {
case MC_CMD_MEDIA_SFP_PLUS:
num_pages = efx_mcdi_phy_sff_8472_level(efx) > 0 ?
SFF_8472_NUM_PAGES : SFF_8079_NUM_PAGES;
page = 0;
ignore_missing = false;
break;
case MC_CMD_MEDIA_QSFP_PLUS:
num_pages = SFF_8436_NUM_PAGES;
page = -1; /* We obtain the lower page by asking for -1. */
ignore_missing = true; /* Ignore missing pages after page 0. */
break;
default:
return -EOPNOTSUPP;
}
page_off = ee->offset % SFP_PAGE_SIZE;
page += ee->offset / SFP_PAGE_SIZE;
while (space_remaining && (page < num_pages)) {
rc = efx_mcdi_phy_get_module_eeprom_page(efx, page,
data, page_off,
space_remaining);
if (rc > 0) {
space_remaining -= rc;
data += rc;
page_off = 0;
page++;
} else if (rc == 0) {
space_remaining = 0;
} else if (ignore_missing && (page > 0)) {
int intended_size = SFP_PAGE_SIZE - page_off;
space_remaining -= intended_size;
if (space_remaining < 0) {
space_remaining = 0;
} else {
memset(data, 0, intended_size);
data += intended_size;
page_off = 0;
page++;
rc = 0;
}
} else {
return rc;
}
}
return 0;
}
int efx_mcdi_phy_get_module_info(struct efx_nic *efx, struct ethtool_modinfo *modinfo)
{
int sff_8472_level;
int diag_type;
switch (efx_mcdi_phy_module_type(efx)) {
case MC_CMD_MEDIA_SFP_PLUS:
sff_8472_level = efx_mcdi_phy_sff_8472_level(efx);
/* If we can't read the diagnostics level we have none. */
if (sff_8472_level < 0)
return -EOPNOTSUPP;
/* Check if this module requires the (unsupported) address
* change operation.
*/
diag_type = efx_mcdi_phy_diag_type(efx);
if ((sff_8472_level == 0) ||
(diag_type & SFF_DIAG_ADDR_CHANGE)) {
modinfo->type = ETH_MODULE_SFF_8079;
modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
} else {
modinfo->type = ETH_MODULE_SFF_8472;
modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
}
break;
case MC_CMD_MEDIA_QSFP_PLUS:
modinfo->type = ETH_MODULE_SFF_8436;
modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
break;
default:
return -EOPNOTSUPP;
}
return 0;
}
static unsigned int efx_calc_mac_mtu(struct efx_nic *efx)
{
return EFX_MAX_FRAME_LEN(efx->net_dev->mtu);

13
drivers/net/ethernet/sfc/mcdi_port_common.h
View file

@ -45,9 +45,18 @@ u32 ethtool_fec_caps_to_mcdi(u32 ethtool_cap);
u32 mcdi_fec_caps_to_ethtool(u32 caps, bool is_25g);
void efx_mcdi_phy_check_fcntl(struct efx_nic *efx, u32 lpa);
bool efx_mcdi_phy_poll(struct efx_nic *efx);
int efx_mcdi_phy_get_fecparam(struct efx_nic *efx,
struct ethtool_fecparam *fec);
int efx_mcdi_phy_probe(struct efx_nic *efx);
void efx_mcdi_phy_remove(struct efx_nic *efx);
void efx_mcdi_phy_get_link_ksettings(struct efx_nic *efx, struct ethtool_link_ksettings *cmd);
int efx_mcdi_phy_set_link_ksettings(struct efx_nic *efx, const struct ethtool_link_ksettings *cmd);
int efx_mcdi_phy_get_fecparam(struct efx_nic *efx, struct ethtool_fecparam *fec);
int efx_mcdi_phy_set_fecparam(struct efx_nic *efx, const struct ethtool_fecparam *fec);
int efx_mcdi_phy_test_alive(struct efx_nic *efx);
int efx_mcdi_port_reconfigure(struct efx_nic *efx);
int efx_mcdi_phy_run_tests(struct efx_nic *efx, int *results, unsigned flags);
const char *efx_mcdi_phy_test_name(struct efx_nic *efx, unsigned int index);
int efx_mcdi_phy_get_module_eeprom(struct efx_nic *efx, struct ethtool_eeprom *ee, u8 *data);
int efx_mcdi_phy_get_module_info(struct efx_nic *efx, struct ethtool_modinfo *modinfo);
int efx_mcdi_set_mac(struct efx_nic *efx);
int efx_mcdi_set_mtu(struct efx_nic *efx);
int efx_mcdi_mac_init_stats(struct efx_nic *efx);

47
drivers/net/ethernet/sfc/net_driver.h
View file

@ -657,51 +657,6 @@ static inline bool efx_link_state_equal(const struct efx_link_state *left,
left->fc == right->fc && left->speed == right->speed;
}
/**
* struct efx_phy_operations - Efx PHY operations table
* @probe: Probe PHY and initialise efx->mdio.mode_support, efx->mdio.mmds,
* efx->loopback_modes.
* @init: Initialise PHY
* @fini: Shut down PHY
* @reconfigure: Reconfigure PHY (e.g. for new link parameters)
* @poll: Update @link_state and report whether it changed.
* Serialised by the mac_lock.
* @get_link_ksettings: Get ethtool settings. Serialised by the mac_lock.
* @set_link_ksettings: Set ethtool settings. Serialised by the mac_lock.
* @get_fecparam: Get Forward Error Correction settings. Serialised by mac_lock.
* @set_fecparam: Set Forward Error Correction settings. Serialised by mac_lock.
* @set_npage_adv: Set abilities advertised in (Extended) Next Page
* (only needed where AN bit is set in mmds)
* @test_alive: Test that PHY is 'alive' (online)
* @test_name: Get the name of a PHY-specific test/result
* @run_tests: Run tests and record results as appropriate (offline).
* Flags are the ethtool tests flags.
*/
struct efx_phy_operations {
int (*probe) (struct efx_nic *efx);
int (*init) (struct efx_nic *efx);
void (*fini) (struct efx_nic *efx);
void (*remove) (struct efx_nic *efx);
int (*reconfigure) (struct efx_nic *efx);
bool (*poll) (struct efx_nic *efx);
void (*get_link_ksettings)(struct efx_nic *efx,
struct ethtool_link_ksettings *cmd);
int (*set_link_ksettings)(struct efx_nic *efx,
const struct ethtool_link_ksettings *cmd);
int (*get_fecparam)(struct efx_nic *efx, struct ethtool_fecparam *fec);
int (*set_fecparam)(struct efx_nic *efx,
const struct ethtool_fecparam *fec);
void (*set_npage_adv) (struct efx_nic *efx, u32);
int (*test_alive) (struct efx_nic *efx);
const char *(*test_name) (struct efx_nic *efx, unsigned int index);
int (*run_tests) (struct efx_nic *efx, int *results, unsigned flags);
int (*get_module_eeprom) (struct efx_nic *efx,
struct ethtool_eeprom *ee,
u8 *data);
int (*get_module_info) (struct efx_nic *efx,
struct ethtool_modinfo *modinfo);
};
/**
* enum efx_phy_mode - PHY operating mode flags
* @PHY_MODE_NORMAL: on and should pass traffic
@ -920,7 +875,6 @@ struct efx_async_filter_insertion {
* field of %MC_CMD_GET_CAPABILITIES_V4 response, or %MC_CMD_MAC_NSTATS)
* @stats_buffer: DMA buffer for statistics
* @phy_type: PHY type
* @phy_op: PHY interface
* @phy_data: PHY private data (including PHY-specific stats)
* @mdio: PHY MDIO interface
* @mdio_bus: PHY MDIO bus ID (only used by Siena)
@ -1094,7 +1048,6 @@ struct efx_nic {
bool rx_nodesc_drops_prev_state;
unsigned int phy_type;
const struct efx_phy_operations *phy_op;
void *phy_data;
struct mdio_if_info mdio;
unsigned int mdio_bus;

12
drivers/net/ethernet/sfc/selftest.c
View file

@ -21,6 +21,7 @@
#include "efx_common.h"
#include "efx_channels.h"
#include "nic.h"
#include "mcdi_port_common.h"
#include "selftest.h"
#include "workarounds.h"
@ -99,10 +100,8 @@ static int efx_test_phy_alive(struct efx_nic *efx, struct efx_self_tests *tests)
{
int rc = 0;
if (efx->phy_op->test_alive) {
rc = efx->phy_op->test_alive(efx);
tests->phy_alive = rc ? -1 : 1;
}
rc = efx_mcdi_phy_test_alive(efx);
tests->phy_alive = rc ? -1 : 1;
return rc;
}
@ -257,11 +256,8 @@ static int efx_test_phy(struct efx_nic *efx, struct efx_self_tests *tests,
{
int rc;
if (!efx->phy_op->run_tests)
return 0;
mutex_lock(&efx->mac_lock);
rc = efx->phy_op->run_tests(efx, tests->phy_ext, flags);
rc = efx_mcdi_phy_run_tests(efx, tests->phy_ext, flags);
mutex_unlock(&efx->mac_lock);
if (rc == -EPERM)
rc = 0;