Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-18 01:51:53 +00:00
Code Issues Packages Projects Releases Wiki Activity
8a35747a5d
linux/drivers/net/sfc/tenxpress.c
Tejun Heo 5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00

865 lines
24 KiB
C
Raw Blame History

/****************************************************************************
* Driver for Solarflare Solarstorm network controllers and boards
* Copyright 2007-2009 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/delay.h>
#include <linux/rtnetlink.h>
#include <linux/seq_file.h>
#include <linux/slab.h>
#include "efx.h"
#include "mdio_10g.h"
#include "nic.h"
#include "phy.h"
#include "regs.h"
#include "workarounds.h"
#include "selftest.h"
/* We expect these MMDs to be in the package. SFT9001 also has a
* clause 22 extension MMD, but since it doesn't have all the generic
* MMD registers it is pointless to include it here.
*/
#define TENXPRESS_REQUIRED_DEVS (MDIO_DEVS_PMAPMD | \
MDIO_DEVS_PCS | \
MDIO_DEVS_PHYXS | \
MDIO_DEVS_AN)
#define SFX7101_LOOPBACKS ((1 << LOOPBACK_PHYXS) | \
(1 << LOOPBACK_PCS) | \
(1 << LOOPBACK_PMAPMD) | \
(1 << LOOPBACK_PHYXS_WS))
#define SFT9001_LOOPBACKS ((1 << LOOPBACK_GPHY) | \
(1 << LOOPBACK_PHYXS) | \
(1 << LOOPBACK_PCS) | \
(1 << LOOPBACK_PMAPMD) | \
(1 << LOOPBACK_PHYXS_WS))
/* 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)
*/
#define MAX_BAD_LP_TRIES (5)
/* Extended control register */
#define PMA_PMD_XCONTROL_REG 49152
#define PMA_PMD_EXT_GMII_EN_LBN 1
#define PMA_PMD_EXT_GMII_EN_WIDTH 1
#define PMA_PMD_EXT_CLK_OUT_LBN 2
#define PMA_PMD_EXT_CLK_OUT_WIDTH 1
#define PMA_PMD_LNPGA_POWERDOWN_LBN 8 /* SFX7101 only */
#define PMA_PMD_LNPGA_POWERDOWN_WIDTH 1
#define PMA_PMD_EXT_CLK312_LBN 8 /* SFT9001 only */
#define PMA_PMD_EXT_CLK312_WIDTH 1
#define PMA_PMD_EXT_LPOWER_LBN 12
#define PMA_PMD_EXT_LPOWER_WIDTH 1
#define PMA_PMD_EXT_ROBUST_LBN 14
#define PMA_PMD_EXT_ROBUST_WIDTH 1
#define PMA_PMD_EXT_SSR_LBN 15
#define PMA_PMD_EXT_SSR_WIDTH 1
/* extended status register */
#define PMA_PMD_XSTATUS_REG 49153
#define PMA_PMD_XSTAT_MDIX_LBN 14
#define PMA_PMD_XSTAT_FLP_LBN (12)
/* LED control register */
#define PMA_PMD_LED_CTRL_REG 49159
#define PMA_PMA_LED_ACTIVITY_LBN (3)
/* LED function override register */
#define PMA_PMD_LED_OVERR_REG 49161
/* Bit positions for different LEDs (there are more but not wired on SFE4001)*/
#define PMA_PMD_LED_LINK_LBN (0)
#define PMA_PMD_LED_SPEED_LBN (2)
#define PMA_PMD_LED_TX_LBN (4)
#define PMA_PMD_LED_RX_LBN (6)
/* Override settings */
#define PMA_PMD_LED_AUTO (0) /* H/W control */
#define PMA_PMD_LED_ON (1)
#define PMA_PMD_LED_OFF (2)
#define PMA_PMD_LED_FLASH (3)
#define PMA_PMD_LED_MASK 3
/* All LEDs under hardware control */
#define SFT9001_PMA_PMD_LED_DEFAULT 0
/* Green and Amber under hardware control, Red off */
#define SFX7101_PMA_PMD_LED_DEFAULT (PMA_PMD_LED_OFF << PMA_PMD_LED_RX_LBN)
#define PMA_PMD_SPEED_ENABLE_REG 49192
#define PMA_PMD_100TX_ADV_LBN 1
#define PMA_PMD_100TX_ADV_WIDTH 1
#define PMA_PMD_1000T_ADV_LBN 2
#define PMA_PMD_1000T_ADV_WIDTH 1
#define PMA_PMD_10000T_ADV_LBN 3
#define PMA_PMD_10000T_ADV_WIDTH 1
#define PMA_PMD_SPEED_LBN 4
#define PMA_PMD_SPEED_WIDTH 4
/* Cable diagnostics - SFT9001 only */
#define PMA_PMD_CDIAG_CTRL_REG 49213
#define CDIAG_CTRL_IMMED_LBN 15
#define CDIAG_CTRL_BRK_LINK_LBN 12
#define CDIAG_CTRL_IN_PROG_LBN 11
#define CDIAG_CTRL_LEN_UNIT_LBN 10
#define CDIAG_CTRL_LEN_METRES 1
#define PMA_PMD_CDIAG_RES_REG 49174
#define CDIAG_RES_A_LBN 12
#define CDIAG_RES_B_LBN 8
#define CDIAG_RES_C_LBN 4
#define CDIAG_RES_D_LBN 0
#define CDIAG_RES_WIDTH 4
#define CDIAG_RES_OPEN 2
#define CDIAG_RES_OK 1
#define CDIAG_RES_INVALID 0
/* Set of 4 registers for pairs A-D */
#define PMA_PMD_CDIAG_LEN_REG 49175
/* Serdes control registers - SFT9001 only */
#define PMA_PMD_CSERDES_CTRL_REG 64258
/* Set the 156.25 MHz output to 312.5 MHz to drive Falcon's XMAC */
#define PMA_PMD_CSERDES_DEFAULT 0x000f
/* Misc register defines - SFX7101 only */
#define PCS_CLOCK_CTRL_REG 55297
#define PLL312_RST_N_LBN 2
#define PCS_SOFT_RST2_REG 55302
#define SERDES_RST_N_LBN 13
#define XGXS_RST_N_LBN 12
#define PCS_TEST_SELECT_REG 55303 /* PRM 10.5.8 */
#define CLK312_EN_LBN 3
/* PHYXS registers */
#define PHYXS_XCONTROL_REG 49152
#define PHYXS_RESET_LBN 15
#define PHYXS_RESET_WIDTH 1
#define PHYXS_TEST1 (49162)
#define LOOPBACK_NEAR_LBN (8)
#define LOOPBACK_NEAR_WIDTH (1)
/* Boot status register */
#define PCS_BOOT_STATUS_REG 53248
#define PCS_BOOT_FATAL_ERROR_LBN 0
#define PCS_BOOT_PROGRESS_LBN 1
#define PCS_BOOT_PROGRESS_WIDTH 2
#define PCS_BOOT_PROGRESS_INIT 0
#define PCS_BOOT_PROGRESS_WAIT_MDIO 1
#define PCS_BOOT_PROGRESS_CHECKSUM 2
#define PCS_BOOT_PROGRESS_JUMP 3
#define PCS_BOOT_DOWNLOAD_WAIT_LBN 3
#define PCS_BOOT_CODE_STARTED_LBN 4
/* 100M/1G PHY registers */
#define GPHY_XCONTROL_REG 49152
#define GPHY_ISOLATE_LBN 10
#define GPHY_ISOLATE_WIDTH 1
#define GPHY_DUPLEX_LBN 8
#define GPHY_DUPLEX_WIDTH 1
#define GPHY_LOOPBACK_NEAR_LBN 14
#define GPHY_LOOPBACK_NEAR_WIDTH 1
#define C22EXT_STATUS_REG 49153
#define C22EXT_STATUS_LINK_LBN 2
#define C22EXT_STATUS_LINK_WIDTH 1
#define C22EXT_MSTSLV_CTRL 49161
#define C22EXT_MSTSLV_CTRL_ADV_1000_HD_LBN 8
#define C22EXT_MSTSLV_CTRL_ADV_1000_FD_LBN 9
#define C22EXT_MSTSLV_STATUS 49162
#define C22EXT_MSTSLV_STATUS_LP_1000_HD_LBN 10
#define C22EXT_MSTSLV_STATUS_LP_1000_FD_LBN 11
/* Time to wait between powering down the LNPGA and turning off the power
* rails */
#define LNPGA_PDOWN_WAIT (HZ / 5)
struct tenxpress_phy_data {
enum efx_loopback_mode loopback_mode;
enum efx_phy_mode phy_mode;
int bad_lp_tries;
};
static ssize_t show_phy_short_reach(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct efx_nic *efx = pci_get_drvdata(to_pci_dev(dev));
int reg;
reg = efx_mdio_read(efx, MDIO_MMD_PMAPMD, MDIO_PMA_10GBT_TXPWR);
return sprintf(buf, "%d\n", !!(reg & MDIO_PMA_10GBT_TXPWR_SHORT));
}
static ssize_t set_phy_short_reach(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct efx_nic *efx = pci_get_drvdata(to_pci_dev(dev));
int rc;
rtnl_lock();
if (efx->state != STATE_RUNNING) {
rc = -EBUSY;
} else {
efx_mdio_set_flag(efx, MDIO_MMD_PMAPMD, MDIO_PMA_10GBT_TXPWR,
MDIO_PMA_10GBT_TXPWR_SHORT,
count != 0 && *buf != '0');
rc = efx_reconfigure_port(efx);
}
rtnl_unlock();
return rc < 0 ? rc : (ssize_t)count;
}
static DEVICE_ATTR(phy_short_reach, 0644, show_phy_short_reach,
set_phy_short_reach);
int sft9001_wait_boot(struct efx_nic *efx)
{
unsigned long timeout = jiffies + HZ + 1;
int boot_stat;
for (;;) {
boot_stat = efx_mdio_read(efx, MDIO_MMD_PCS,
PCS_BOOT_STATUS_REG);
if (boot_stat >= 0) {
EFX_LOG(efx, "PHY boot status = %#x\n", boot_stat);
switch (boot_stat &
((1 << PCS_BOOT_FATAL_ERROR_LBN) |
(3 << PCS_BOOT_PROGRESS_LBN) |
(1 << PCS_BOOT_DOWNLOAD_WAIT_LBN) |
(1 << PCS_BOOT_CODE_STARTED_LBN))) {
case ((1 << PCS_BOOT_FATAL_ERROR_LBN) |
(PCS_BOOT_PROGRESS_CHECKSUM <<
PCS_BOOT_PROGRESS_LBN)):
case ((1 << PCS_BOOT_FATAL_ERROR_LBN) |
(PCS_BOOT_PROGRESS_INIT <<
PCS_BOOT_PROGRESS_LBN) |
(1 << PCS_BOOT_DOWNLOAD_WAIT_LBN)):
return -EINVAL;
case ((PCS_BOOT_PROGRESS_WAIT_MDIO <<
PCS_BOOT_PROGRESS_LBN) |
(1 << PCS_BOOT_DOWNLOAD_WAIT_LBN)):
return (efx->phy_mode & PHY_MODE_SPECIAL) ?
0 : -EIO;
case ((PCS_BOOT_PROGRESS_JUMP <<
PCS_BOOT_PROGRESS_LBN) |
(1 << PCS_BOOT_CODE_STARTED_LBN)):
case ((PCS_BOOT_PROGRESS_JUMP <<
PCS_BOOT_PROGRESS_LBN) |
(1 << PCS_BOOT_DOWNLOAD_WAIT_LBN) |
(1 << PCS_BOOT_CODE_STARTED_LBN)):
return (efx->phy_mode & PHY_MODE_SPECIAL) ?
-EIO : 0;
default:
if (boot_stat & (1 << PCS_BOOT_FATAL_ERROR_LBN))
return -EIO;
break;
}
}
if (time_after_eq(jiffies, timeout))
return -ETIMEDOUT;
msleep(50);
}
}
static int tenxpress_init(struct efx_nic *efx)
{
int reg;
if (efx->phy_type == PHY_TYPE_SFX7101) {
/* Enable 312.5 MHz clock */
efx_mdio_write(efx, MDIO_MMD_PCS, PCS_TEST_SELECT_REG,
1 << CLK312_EN_LBN);
} else {
/* Enable 312.5 MHz clock and GMII */
reg = efx_mdio_read(efx, MDIO_MMD_PMAPMD, PMA_PMD_XCONTROL_REG);
reg |= ((1 << PMA_PMD_EXT_GMII_EN_LBN) |
(1 << PMA_PMD_EXT_CLK_OUT_LBN) |
(1 << PMA_PMD_EXT_CLK312_LBN) |
(1 << PMA_PMD_EXT_ROBUST_LBN));
efx_mdio_write(efx, MDIO_MMD_PMAPMD, PMA_PMD_XCONTROL_REG, reg);
efx_mdio_set_flag(efx, MDIO_MMD_C22EXT,
GPHY_XCONTROL_REG, 1 << GPHY_ISOLATE_LBN,
false);
}
/* Set the LEDs up as: Green = Link, Amber = Link/Act, Red = Off */
if (efx->phy_type == PHY_TYPE_SFX7101) {
efx_mdio_set_flag(efx, MDIO_MMD_PMAPMD, PMA_PMD_LED_CTRL_REG,
1 << PMA_PMA_LED_ACTIVITY_LBN, true);
efx_mdio_write(efx, MDIO_MMD_PMAPMD, PMA_PMD_LED_OVERR_REG,
SFX7101_PMA_PMD_LED_DEFAULT);
}
return 0;
}
static int tenxpress_phy_probe(struct efx_nic *efx)
{
struct tenxpress_phy_data *phy_data;
int rc;
/* Allocate phy private storage */
phy_data = kzalloc(sizeof(*phy_data), GFP_KERNEL);
if (!phy_data)
return -ENOMEM;
efx->phy_data = phy_data;
phy_data->phy_mode = efx->phy_mode;
/* Create any special files */
if (efx->phy_type == PHY_TYPE_SFT9001B) {
rc = device_create_file(&efx->pci_dev->dev,
&dev_attr_phy_short_reach);
if (rc)
goto fail;
}
if (efx->phy_type == PHY_TYPE_SFX7101) {
efx->mdio.mmds = TENXPRESS_REQUIRED_DEVS;
efx->mdio.mode_support = MDIO_SUPPORTS_C45;
efx->loopback_modes = SFX7101_LOOPBACKS | FALCON_XMAC_LOOPBACKS;
efx->link_advertising = (ADVERTISED_TP | ADVERTISED_Autoneg |
ADVERTISED_10000baseT_Full);
} else {
efx->mdio.mmds = TENXPRESS_REQUIRED_DEVS;
efx->mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
efx->loopback_modes = (SFT9001_LOOPBACKS |
FALCON_XMAC_LOOPBACKS |
FALCON_GMAC_LOOPBACKS);
efx->link_advertising = (ADVERTISED_TP | ADVERTISED_Autoneg |
ADVERTISED_10000baseT_Full |
ADVERTISED_1000baseT_Full |
ADVERTISED_100baseT_Full);
}
return 0;
fail:
kfree(efx->phy_data);
efx->phy_data = NULL;
return rc;
}
static int tenxpress_phy_init(struct efx_nic *efx)
{
int rc;
falcon_board(efx)->type->init_phy(efx);
if (!(efx->phy_mode & PHY_MODE_SPECIAL)) {
if (efx->phy_type == PHY_TYPE_SFT9001A) {
int reg;
reg = efx_mdio_read(efx, MDIO_MMD_PMAPMD,
PMA_PMD_XCONTROL_REG);
reg |= (1 << PMA_PMD_EXT_SSR_LBN);
efx_mdio_write(efx, MDIO_MMD_PMAPMD,
PMA_PMD_XCONTROL_REG, reg);
mdelay(200);
}
rc = efx_mdio_wait_reset_mmds(efx, TENXPRESS_REQUIRED_DEVS);
if (rc < 0)
return rc;
rc = efx_mdio_check_mmds(efx, TENXPRESS_REQUIRED_DEVS, 0);
if (rc < 0)
return rc;
}
rc = tenxpress_init(efx);
if (rc < 0)
return rc;
/* Reinitialise flow control settings */
efx_link_set_wanted_fc(efx, efx->wanted_fc);
efx_mdio_an_reconfigure(efx);
schedule_timeout_uninterruptible(HZ / 5); /* 200ms */
/* Let XGXS and SerDes out of reset */
falcon_reset_xaui(efx);
return 0;
}
/* Perform a "special software reset" on the PHY. The caller is
* responsible for saving and restoring the PHY hardware registers
* properly, and masking/unmasking LASI */
static int tenxpress_special_reset(struct efx_nic *efx)
{
int rc, reg;
/* The XGMAC clock is driven from the SFC7101/SFT9001 312MHz clock, so
* a special software reset can glitch the XGMAC sufficiently for stats
* requests to fail. */
falcon_stop_nic_stats(efx);
/* Initiate reset */
reg = efx_mdio_read(efx, MDIO_MMD_PMAPMD, PMA_PMD_XCONTROL_REG);
reg |= (1 << PMA_PMD_EXT_SSR_LBN);
efx_mdio_write(efx, MDIO_MMD_PMAPMD, PMA_PMD_XCONTROL_REG, reg);
mdelay(200);
/* Wait for the blocks to come out of reset */
rc = efx_mdio_wait_reset_mmds(efx, TENXPRESS_REQUIRED_DEVS);
if (rc < 0)
goto out;
/* Try and reconfigure the device */
rc = tenxpress_init(efx);
if (rc < 0)
goto out;
/* Wait for the XGXS state machine to churn */
mdelay(10);
out:
falcon_start_nic_stats(efx);
return rc;
}
static void sfx7101_check_bad_lp(struct efx_nic *efx, bool link_ok)
{
struct tenxpress_phy_data *pd = efx->phy_data;
bool bad_lp;
int reg;
if (link_ok) {
bad_lp = false;
} else {
/* Check that AN has started but not completed. */
reg = efx_mdio_read(efx, MDIO_MMD_AN, MDIO_STAT1);
if (!(reg & MDIO_AN_STAT1_LPABLE))
return; /* LP status is unknown */
bad_lp = !(reg & MDIO_AN_STAT1_COMPLETE);
if (bad_lp)
pd->bad_lp_tries++;
}
/* Nothing to do if all is well and was previously so. */
if (!pd->bad_lp_tries)
return;
/* Use the RX (red) LED as an error indicator once we've seen AN
* failure several times in a row, and also log a message. */
if (!bad_lp || pd->bad_lp_tries == MAX_BAD_LP_TRIES) {
reg = efx_mdio_read(efx, MDIO_MMD_PMAPMD,
PMA_PMD_LED_OVERR_REG);
reg &= ~(PMA_PMD_LED_MASK << PMA_PMD_LED_RX_LBN);
if (!bad_lp) {
reg |= PMA_PMD_LED_OFF << PMA_PMD_LED_RX_LBN;
} else {
reg |= PMA_PMD_LED_FLASH << PMA_PMD_LED_RX_LBN;
EFX_ERR(efx, "appears to be plugged into a port"
" that is not 10GBASE-T capable. The PHY"
" supports 10GBASE-T ONLY, so no link can"
" be established\n");
}
efx_mdio_write(efx, MDIO_MMD_PMAPMD,
PMA_PMD_LED_OVERR_REG, reg);
pd->bad_lp_tries = bad_lp;
}
}
static bool sfx7101_link_ok(struct efx_nic *efx)
{
return efx_mdio_links_ok(efx,
MDIO_DEVS_PMAPMD |
MDIO_DEVS_PCS |
MDIO_DEVS_PHYXS);
}
static bool sft9001_link_ok(struct efx_nic *efx, struct ethtool_cmd *ecmd)
{
u32 reg;
if (efx_phy_mode_disabled(efx->phy_mode))
return false;
else if (efx->loopback_mode == LOOPBACK_GPHY)
return true;
else if (efx->loopback_mode)
return efx_mdio_links_ok(efx,
MDIO_DEVS_PMAPMD |
MDIO_DEVS_PHYXS);
/* We must use the same definition of link state as LASI,
* otherwise we can miss a link state transition
*/
if (ecmd->speed == 10000) {
reg = efx_mdio_read(efx, MDIO_MMD_PCS, MDIO_PCS_10GBRT_STAT1);
return reg & MDIO_PCS_10GBRT_STAT1_BLKLK;
} else {
reg = efx_mdio_read(efx, MDIO_MMD_C22EXT, C22EXT_STATUS_REG);
return reg & (1 << C22EXT_STATUS_LINK_LBN);
}
}
static void tenxpress_ext_loopback(struct efx_nic *efx)
{
efx_mdio_set_flag(efx, MDIO_MMD_PHYXS, PHYXS_TEST1,
1 << LOOPBACK_NEAR_LBN,
efx->loopback_mode == LOOPBACK_PHYXS);
if (efx->phy_type != PHY_TYPE_SFX7101)
efx_mdio_set_flag(efx, MDIO_MMD_C22EXT, GPHY_XCONTROL_REG,
1 << GPHY_LOOPBACK_NEAR_LBN,
efx->loopback_mode == LOOPBACK_GPHY);
}
static void tenxpress_low_power(struct efx_nic *efx)
{
if (efx->phy_type == PHY_TYPE_SFX7101)
efx_mdio_set_mmds_lpower(
efx, !!(efx->phy_mode & PHY_MODE_LOW_POWER),
TENXPRESS_REQUIRED_DEVS);
else
efx_mdio_set_flag(
efx, MDIO_MMD_PMAPMD, PMA_PMD_XCONTROL_REG,
1 << PMA_PMD_EXT_LPOWER_LBN,
!!(efx->phy_mode & PHY_MODE_LOW_POWER));
}
static int tenxpress_phy_reconfigure(struct efx_nic *efx)
{
struct tenxpress_phy_data *phy_data = efx->phy_data;
bool phy_mode_change, loop_reset;
if (efx->phy_mode & (PHY_MODE_OFF | PHY_MODE_SPECIAL)) {
phy_data->phy_mode = efx->phy_mode;
return 0;
}
phy_mode_change = (efx->phy_mode == PHY_MODE_NORMAL &&
phy_data->phy_mode != PHY_MODE_NORMAL);
loop_reset = (LOOPBACK_OUT_OF(phy_data, efx, LOOPBACKS_EXTERNAL(efx)) ||
LOOPBACK_CHANGED(phy_data, efx, 1 << LOOPBACK_GPHY));
if (loop_reset || phy_mode_change) {
tenxpress_special_reset(efx);
/* Reset XAUI if we were in 10G, and are staying
* in 10G. If we're moving into and out of 10G
* then xaui will be reset anyway */
if (EFX_IS10G(efx))
falcon_reset_xaui(efx);
}
tenxpress_low_power(efx);
efx_mdio_transmit_disable(efx);
efx_mdio_phy_reconfigure(efx);
tenxpress_ext_loopback(efx);
efx_mdio_an_reconfigure(efx);
phy_data->loopback_mode = efx->loopback_mode;
phy_data->phy_mode = efx->phy_mode;
return 0;
}
static void
tenxpress_get_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd);
/* Poll for link state changes */
static bool tenxpress_phy_poll(struct efx_nic *efx)
{
struct efx_link_state old_state = efx->link_state;
if (efx->phy_type == PHY_TYPE_SFX7101) {
efx->link_state.up = sfx7101_link_ok(efx);
efx->link_state.speed = 10000;
efx->link_state.fd = true;
efx->link_state.fc = efx_mdio_get_pause(efx);
sfx7101_check_bad_lp(efx, efx->link_state.up);
} else {
struct ethtool_cmd ecmd;
/* Check the LASI alarm first */
if (efx->loopback_mode == LOOPBACK_NONE &&
!(efx_mdio_read(efx, MDIO_MMD_PMAPMD, MDIO_PMA_LASI_STAT) &
MDIO_PMA_LASI_LSALARM))
return false;
tenxpress_get_settings(efx, &ecmd);
efx->link_state.up = sft9001_link_ok(efx, &ecmd);
efx->link_state.speed = ecmd.speed;
efx->link_state.fd = (ecmd.duplex == DUPLEX_FULL);
efx->link_state.fc = efx_mdio_get_pause(efx);
}
return !efx_link_state_equal(&efx->link_state, &old_state);
}
static void sfx7101_phy_fini(struct efx_nic *efx)
{
int reg;
/* Power down the LNPGA */
reg = (1 << PMA_PMD_LNPGA_POWERDOWN_LBN);
efx_mdio_write(efx, MDIO_MMD_PMAPMD, PMA_PMD_XCONTROL_REG, reg);
/* Waiting here ensures that the board fini, which can turn
* off the power to the PHY, won't get run until the LNPGA
* powerdown has been given long enough to complete. */
schedule_timeout_uninterruptible(LNPGA_PDOWN_WAIT); /* 200 ms */
}
static void tenxpress_phy_remove(struct efx_nic *efx)
{
if (efx->phy_type == PHY_TYPE_SFT9001B)
device_remove_file(&efx->pci_dev->dev,
&dev_attr_phy_short_reach);
kfree(efx->phy_data);
efx->phy_data = NULL;
}
/* Override the RX, TX and link LEDs */
void tenxpress_set_id_led(struct efx_nic *efx, enum efx_led_mode mode)
{
int reg;
switch (mode) {
case EFX_LED_OFF:
reg = (PMA_PMD_LED_OFF << PMA_PMD_LED_TX_LBN) |
(PMA_PMD_LED_OFF << PMA_PMD_LED_RX_LBN) |
(PMA_PMD_LED_OFF << PMA_PMD_LED_LINK_LBN);
break;
case EFX_LED_ON:
reg = (PMA_PMD_LED_ON << PMA_PMD_LED_TX_LBN) |
(PMA_PMD_LED_ON << PMA_PMD_LED_RX_LBN) |
(PMA_PMD_LED_ON << PMA_PMD_LED_LINK_LBN);
break;
default:
if (efx->phy_type == PHY_TYPE_SFX7101)
reg = SFX7101_PMA_PMD_LED_DEFAULT;
else
reg = SFT9001_PMA_PMD_LED_DEFAULT;
break;
}
efx_mdio_write(efx, MDIO_MMD_PMAPMD, PMA_PMD_LED_OVERR_REG, reg);
}
static const char *const sfx7101_test_names[] = {
"bist"
};
static const char *sfx7101_test_name(struct efx_nic *efx, unsigned int index)
{
if (index < ARRAY_SIZE(sfx7101_test_names))
return sfx7101_test_names[index];
return NULL;
}
static int
sfx7101_run_tests(struct efx_nic *efx, int *results, unsigned flags)
{
int rc;
if (!(flags & ETH_TEST_FL_OFFLINE))
return 0;
/* BIST is automatically run after a special software reset */
rc = tenxpress_special_reset(efx);
results[0] = rc ? -1 : 1;
efx_mdio_an_reconfigure(efx);
return rc;
}
static const char *const sft9001_test_names[] = {
"bist",
"cable.pairA.status",
"cable.pairB.status",
"cable.pairC.status",
"cable.pairD.status",
"cable.pairA.length",
"cable.pairB.length",
"cable.pairC.length",
"cable.pairD.length",
};
static const char *sft9001_test_name(struct efx_nic *efx, unsigned int index)
{
if (index < ARRAY_SIZE(sft9001_test_names))
return sft9001_test_names[index];
return NULL;
}
static int sft9001_run_tests(struct efx_nic *efx, int *results, unsigned flags)
{
int rc = 0, rc2, i, ctrl_reg, res_reg;
/* Initialise cable diagnostic results to unknown failure */
for (i = 1; i < 9; ++i)
results[i] = -1;
/* Run cable diagnostics; wait up to 5 seconds for them to complete.
* A cable fault is not a self-test failure, but a timeout is. */
ctrl_reg = ((1 << CDIAG_CTRL_IMMED_LBN) |
(CDIAG_CTRL_LEN_METRES << CDIAG_CTRL_LEN_UNIT_LBN));
if (flags & ETH_TEST_FL_OFFLINE) {
/* Break the link in order to run full diagnostics. We
* must reset the PHY to resume normal service. */
ctrl_reg |= (1 << CDIAG_CTRL_BRK_LINK_LBN);
}
efx_mdio_write(efx, MDIO_MMD_PMAPMD, PMA_PMD_CDIAG_CTRL_REG,
ctrl_reg);
i = 0;
while (efx_mdio_read(efx, MDIO_MMD_PMAPMD, PMA_PMD_CDIAG_CTRL_REG) &
(1 << CDIAG_CTRL_IN_PROG_LBN)) {
if (++i == 50) {
rc = -ETIMEDOUT;
goto out;
}
msleep(100);
}
res_reg = efx_mdio_read(efx, MDIO_MMD_PMAPMD, PMA_PMD_CDIAG_RES_REG);
for (i = 0; i < 4; i++) {
int pair_res =
(res_reg >> (CDIAG_RES_A_LBN - i * CDIAG_RES_WIDTH))
& ((1 << CDIAG_RES_WIDTH) - 1);
int len_reg = efx_mdio_read(efx, MDIO_MMD_PMAPMD,
PMA_PMD_CDIAG_LEN_REG + i);
if (pair_res == CDIAG_RES_OK)
results[1 + i] = 1;
else if (pair_res == CDIAG_RES_INVALID)
results[1 + i] = -1;
else
results[1 + i] = -pair_res;
if (pair_res != CDIAG_RES_INVALID &&
pair_res != CDIAG_RES_OPEN &&
len_reg != 0xffff)
results[5 + i] = len_reg;
}
out:
if (flags & ETH_TEST_FL_OFFLINE) {
/* Reset, running the BIST and then resuming normal service. */
rc2 = tenxpress_special_reset(efx);
results[0] = rc2 ? -1 : 1;
if (!rc)
rc = rc2;
efx_mdio_an_reconfigure(efx);
}
return rc;
}
static void
tenxpress_get_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd)
{
u32 adv = 0, lpa = 0;
int reg;
if (efx->phy_type != PHY_TYPE_SFX7101) {
reg = efx_mdio_read(efx, MDIO_MMD_C22EXT, C22EXT_MSTSLV_CTRL);
if (reg & (1 << C22EXT_MSTSLV_CTRL_ADV_1000_FD_LBN))
adv |= ADVERTISED_1000baseT_Full;
reg = efx_mdio_read(efx, MDIO_MMD_C22EXT, C22EXT_MSTSLV_STATUS);
if (reg & (1 << C22EXT_MSTSLV_STATUS_LP_1000_HD_LBN))
lpa |= ADVERTISED_1000baseT_Half;
if (reg & (1 << C22EXT_MSTSLV_STATUS_LP_1000_FD_LBN))
lpa |= ADVERTISED_1000baseT_Full;
}
reg = efx_mdio_read(efx, MDIO_MMD_AN, MDIO_AN_10GBT_CTRL);
if (reg & MDIO_AN_10GBT_CTRL_ADV10G)
adv |= ADVERTISED_10000baseT_Full;
reg = efx_mdio_read(efx, MDIO_MMD_AN, MDIO_AN_10GBT_STAT);
if (reg & MDIO_AN_10GBT_STAT_LP10G)
lpa |= ADVERTISED_10000baseT_Full;
mdio45_ethtool_gset_npage(&efx->mdio, ecmd, adv, lpa);
if (efx->phy_type != PHY_TYPE_SFX7101) {
ecmd->supported |= (SUPPORTED_100baseT_Full |
SUPPORTED_1000baseT_Full);
if (ecmd->speed != SPEED_10000) {
ecmd->eth_tp_mdix =
(efx_mdio_read(efx, MDIO_MMD_PMAPMD,
PMA_PMD_XSTATUS_REG) &
(1 << PMA_PMD_XSTAT_MDIX_LBN))
? ETH_TP_MDI_X : ETH_TP_MDI;
}
}
/* In loopback, the PHY automatically brings up the correct interface,
* but doesn't advertise the correct speed. So override it */
if (efx->loopback_mode == LOOPBACK_GPHY)
ecmd->speed = SPEED_1000;
else if (LOOPBACK_EXTERNAL(efx))
ecmd->speed = SPEED_10000;
}
static int tenxpress_set_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd)
{
if (!ecmd->autoneg)
return -EINVAL;
return efx_mdio_set_settings(efx, ecmd);
}
static void sfx7101_set_npage_adv(struct efx_nic *efx, u32 advertising)
{
efx_mdio_set_flag(efx, MDIO_MMD_AN, MDIO_AN_10GBT_CTRL,
MDIO_AN_10GBT_CTRL_ADV10G,
advertising & ADVERTISED_10000baseT_Full);
}
static void sft9001_set_npage_adv(struct efx_nic *efx, u32 advertising)
{
efx_mdio_set_flag(efx, MDIO_MMD_C22EXT, C22EXT_MSTSLV_CTRL,
1 << C22EXT_MSTSLV_CTRL_ADV_1000_FD_LBN,
advertising & ADVERTISED_1000baseT_Full);
efx_mdio_set_flag(efx, MDIO_MMD_AN, MDIO_AN_10GBT_CTRL,
MDIO_AN_10GBT_CTRL_ADV10G,
advertising & ADVERTISED_10000baseT_Full);
}
struct efx_phy_operations falcon_sfx7101_phy_ops = {
.probe = tenxpress_phy_probe,
.init = tenxpress_phy_init,
.reconfigure = tenxpress_phy_reconfigure,
.poll = tenxpress_phy_poll,
.fini = sfx7101_phy_fini,
.remove = tenxpress_phy_remove,
.get_settings = tenxpress_get_settings,
.set_settings = tenxpress_set_settings,
.set_npage_adv = sfx7101_set_npage_adv,
.test_alive = efx_mdio_test_alive,
.test_name = sfx7101_test_name,
.run_tests = sfx7101_run_tests,
};
struct efx_phy_operations falcon_sft9001_phy_ops = {
.probe = tenxpress_phy_probe,
.init = tenxpress_phy_init,
.reconfigure = tenxpress_phy_reconfigure,
.poll = tenxpress_phy_poll,
.fini = efx_port_dummy_op_void,
.remove = tenxpress_phy_remove,
.get_settings = tenxpress_get_settings,
.set_settings = tenxpress_set_settings,
.set_npage_adv = sft9001_set_npage_adv,
.test_alive = efx_mdio_test_alive,
.test_name = sft9001_test_name,
.run_tests = sft9001_run_tests,
};
Reference in New Issue View Git Blame Copy Permalink