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Date: Mon, 1 Sep 2008 12:49:20 +0100
From: Ben Hutchings <bhutchings@...arflare.com>
To: Jeff Garzik <jgarzik@...ox.com>
Cc: netdev@...r.kernel.org, linux-net-drivers@...arflare.com
Subject: [PATCH 43/52] sfc: Remove workaround for old firmware bug
There was a bug in XAUI synchronisation in early 10Xpress firmware
versions. This is fixed in released firmware and we do not need to
work around it.
Signed-off-by: Ben Hutchings <bhutchings@...arflare.com>
---
drivers/net/sfc/efx.c | 1 -
drivers/net/sfc/falcon_xmac.c | 88 +----------------------------------------
drivers/net/sfc/net_driver.h | 2 -
drivers/net/sfc/sfe4001.c | 12 ------
drivers/net/sfc/tenxpress.c | 51 -----------------------
drivers/net/sfc/workarounds.h | 2 -
drivers/net/sfc/xfp_phy.c | 1 -
7 files changed, 1 insertions(+), 156 deletions(-)
diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c
index c295ea6..ef72413 100644
--- a/drivers/net/sfc/efx.c
+++ b/drivers/net/sfc/efx.c
@@ -1750,7 +1750,6 @@ static struct efx_phy_operations efx_dummy_phy_operations = {
.check_hw = efx_port_dummy_op_int,
.fini = efx_port_dummy_op_void,
.clear_interrupt = efx_port_dummy_op_void,
- .reset_xaui = efx_port_dummy_op_void,
};
static struct efx_board efx_dummy_board_info = {
diff --git a/drivers/net/sfc/falcon_xmac.c b/drivers/net/sfc/falcon_xmac.c
index 0d9f68f..d401231 100644
--- a/drivers/net/sfc/falcon_xmac.c
+++ b/drivers/net/sfc/falcon_xmac.c
@@ -78,79 +78,7 @@ static void falcon_setup_xaui(struct efx_nic *efx)
falcon_write(efx, &txdrv, XX_TXDRV_CTL_REG);
}
-static void falcon_hold_xaui_in_rst(struct efx_nic *efx)
-{
- efx_oword_t reg;
-
- EFX_ZERO_OWORD(reg);
- EFX_SET_OWORD_FIELD(reg, XX_PWRDNA_EN, 1);
- EFX_SET_OWORD_FIELD(reg, XX_PWRDNB_EN, 1);
- EFX_SET_OWORD_FIELD(reg, XX_PWRDNC_EN, 1);
- EFX_SET_OWORD_FIELD(reg, XX_PWRDND_EN, 1);
- EFX_SET_OWORD_FIELD(reg, XX_RSTPLLAB_EN, 1);
- EFX_SET_OWORD_FIELD(reg, XX_RSTPLLCD_EN, 1);
- EFX_SET_OWORD_FIELD(reg, XX_RESETA_EN, 1);
- EFX_SET_OWORD_FIELD(reg, XX_RESETB_EN, 1);
- EFX_SET_OWORD_FIELD(reg, XX_RESETC_EN, 1);
- EFX_SET_OWORD_FIELD(reg, XX_RESETD_EN, 1);
- EFX_SET_OWORD_FIELD(reg, XX_RSTXGXSRX_EN, 1);
- EFX_SET_OWORD_FIELD(reg, XX_RSTXGXSTX_EN, 1);
- falcon_write(efx, ®, XX_PWR_RST_REG);
- udelay(10);
-}
-
-static int _falcon_reset_xaui_a(struct efx_nic *efx)
-{
- efx_oword_t reg;
-
- falcon_hold_xaui_in_rst(efx);
- falcon_read(efx, ®, XX_PWR_RST_REG);
-
- /* Follow the RAMBUS XAUI data reset sequencing
- * Channels A and B first: power down, reset PLL, reset, clear
- */
- EFX_SET_OWORD_FIELD(reg, XX_PWRDNA_EN, 0);
- EFX_SET_OWORD_FIELD(reg, XX_PWRDNB_EN, 0);
- falcon_write(efx, ®, XX_PWR_RST_REG);
- udelay(10);
-
- EFX_SET_OWORD_FIELD(reg, XX_RSTPLLAB_EN, 0);
- falcon_write(efx, ®, XX_PWR_RST_REG);
- udelay(10);
-
- EFX_SET_OWORD_FIELD(reg, XX_RESETA_EN, 0);
- EFX_SET_OWORD_FIELD(reg, XX_RESETB_EN, 0);
- falcon_write(efx, ®, XX_PWR_RST_REG);
- udelay(10);
-
- /* Channels C and D: power down, reset PLL, reset, clear */
- EFX_SET_OWORD_FIELD(reg, XX_PWRDNC_EN, 0);
- EFX_SET_OWORD_FIELD(reg, XX_PWRDND_EN, 0);
- falcon_write(efx, ®, XX_PWR_RST_REG);
- udelay(10);
-
- EFX_SET_OWORD_FIELD(reg, XX_RSTPLLCD_EN, 0);
- falcon_write(efx, ®, XX_PWR_RST_REG);
- udelay(10);
-
- EFX_SET_OWORD_FIELD(reg, XX_RESETC_EN, 0);
- EFX_SET_OWORD_FIELD(reg, XX_RESETD_EN, 0);
- falcon_write(efx, ®, XX_PWR_RST_REG);
- udelay(10);
-
- /* Setup XAUI */
- falcon_setup_xaui(efx);
- udelay(10);
-
- /* Take XGXS out of reset */
- EFX_ZERO_OWORD(reg);
- falcon_write(efx, ®, XX_PWR_RST_REG);
- udelay(10);
-
- return 0;
-}
-
-static int _falcon_reset_xaui_b(struct efx_nic *efx)
+int falcon_reset_xaui(struct efx_nic *efx)
{
efx_oword_t reg;
int count;
@@ -171,20 +99,6 @@ static int _falcon_reset_xaui_b(struct efx_nic *efx)
return -ETIMEDOUT;
}
-int falcon_reset_xaui(struct efx_nic *efx)
-{
- int rc;
-
- if (EFX_WORKAROUND_9388(efx)) {
- falcon_hold_xaui_in_rst(efx);
- efx->phy_op->reset_xaui(efx);
- rc = _falcon_reset_xaui_a(efx);
- } else {
- rc = _falcon_reset_xaui_b(efx);
- }
- return rc;
-}
-
static bool falcon_xgmii_status(struct efx_nic *efx)
{
efx_oword_t reg;
diff --git a/drivers/net/sfc/net_driver.h b/drivers/net/sfc/net_driver.h
index 567df00..be3d2ba 100644
--- a/drivers/net/sfc/net_driver.h
+++ b/drivers/net/sfc/net_driver.h
@@ -503,7 +503,6 @@ enum efx_fc_type {
* @clear_interrupt: Clear down interrupt
* @blink: Blink LEDs
* @check_hw: Check hardware
- * @reset_xaui: Reset XAUI side of PHY for (software sequenced reset)
* @mmds: MMD presence mask
* @loopbacks: Supported loopback modes mask
*/
@@ -513,7 +512,6 @@ struct efx_phy_operations {
void (*reconfigure) (struct efx_nic *efx);
void (*clear_interrupt) (struct efx_nic *efx);
int (*check_hw) (struct efx_nic *efx);
- void (*reset_xaui) (struct efx_nic *efx);
int (*test) (struct efx_nic *efx);
int mmds;
unsigned loopbacks;
diff --git a/drivers/net/sfc/sfe4001.c b/drivers/net/sfc/sfe4001.c
index b7005da..fe4e3fd 100644
--- a/drivers/net/sfc/sfe4001.c
+++ b/drivers/net/sfc/sfe4001.c
@@ -129,18 +129,6 @@ static int sfe4001_poweron(struct efx_nic *efx)
unsigned int i, j;
int rc;
u8 out;
- efx_oword_t reg;
-
- /* Ensure that XGXS and XAUI SerDes are held in reset */
- EFX_POPULATE_OWORD_7(reg, XX_PWRDNA_EN, 1,
- XX_PWRDNB_EN, 1,
- XX_RSTPLLAB_EN, 1,
- XX_RESETA_EN, 1,
- XX_RESETB_EN, 1,
- XX_RSTXGXSRX_EN, 1,
- XX_RSTXGXSTX_EN, 1);
- falcon_write(efx, ®, XX_PWR_RST_REG);
- udelay(10);
/* Clear any previous over-temperature alert */
rc = i2c_smbus_read_byte_data(hwmon_client, RSL);
diff --git a/drivers/net/sfc/tenxpress.c b/drivers/net/sfc/tenxpress.c
index 8412dbe..77e7f3a 100644
--- a/drivers/net/sfc/tenxpress.c
+++ b/drivers/net/sfc/tenxpress.c
@@ -146,8 +146,6 @@ static int tenxpress_phy_check(struct efx_nic *efx)
return 0;
}
-static void tenxpress_reset_xaui(struct efx_nic *efx);
-
static int tenxpress_init(struct efx_nic *efx)
{
int rc, reg;
@@ -428,54 +426,6 @@ void tenxpress_phy_blink(struct efx_nic *efx, bool blink)
PMA_PMD_LED_OVERR_REG, reg);
}
-static void tenxpress_reset_xaui(struct efx_nic *efx)
-{
- int phy = efx->mii.phy_id;
- int clk_ctrl, test_select, soft_rst2;
-
- /* Real work is done on clock_ctrl other resets are thought to be
- * optional but make the reset more reliable
- */
-
- /* Read */
- clk_ctrl = mdio_clause45_read(efx, phy, MDIO_MMD_PCS,
- PCS_CLOCK_CTRL_REG);
- test_select = mdio_clause45_read(efx, phy, MDIO_MMD_PCS,
- PCS_TEST_SELECT_REG);
- soft_rst2 = mdio_clause45_read(efx, phy, MDIO_MMD_PCS,
- PCS_SOFT_RST2_REG);
-
- /* Put in reset */
- test_select &= ~(1 << CLK312_EN_LBN);
- mdio_clause45_write(efx, phy, MDIO_MMD_PCS,
- PCS_TEST_SELECT_REG, test_select);
-
- soft_rst2 &= ~((1 << XGXS_RST_N_LBN) | (1 << SERDES_RST_N_LBN));
- mdio_clause45_write(efx, phy, MDIO_MMD_PCS,
- PCS_SOFT_RST2_REG, soft_rst2);
-
- clk_ctrl &= ~(1 << PLL312_RST_N_LBN);
- mdio_clause45_write(efx, phy, MDIO_MMD_PCS,
- PCS_CLOCK_CTRL_REG, clk_ctrl);
- udelay(10);
-
- /* Remove reset */
- clk_ctrl |= (1 << PLL312_RST_N_LBN);
- mdio_clause45_write(efx, phy, MDIO_MMD_PCS,
- PCS_CLOCK_CTRL_REG, clk_ctrl);
- udelay(10);
-
- soft_rst2 |= ((1 << XGXS_RST_N_LBN) | (1 << SERDES_RST_N_LBN));
- mdio_clause45_write(efx, phy, MDIO_MMD_PCS,
- PCS_SOFT_RST2_REG, soft_rst2);
- udelay(10);
-
- test_select |= (1 << CLK312_EN_LBN);
- mdio_clause45_write(efx, phy, MDIO_MMD_PCS,
- PCS_TEST_SELECT_REG, test_select);
- udelay(10);
-}
-
static int tenxpress_phy_test(struct efx_nic *efx)
{
/* BIST is automatically run after a special software reset */
@@ -488,7 +438,6 @@ struct efx_phy_operations falcon_tenxpress_phy_ops = {
.check_hw = tenxpress_phy_check_hw,
.fini = tenxpress_phy_fini,
.clear_interrupt = tenxpress_phy_clear_interrupt,
- .reset_xaui = tenxpress_reset_xaui,
.test = tenxpress_phy_test,
.mmds = TENXPRESS_REQUIRED_DEVS,
.loopbacks = TENXPRESS_LOOPBACKS,
diff --git a/drivers/net/sfc/workarounds.h b/drivers/net/sfc/workarounds.h
index a824f59..fa7b49d 100644
--- a/drivers/net/sfc/workarounds.h
+++ b/drivers/net/sfc/workarounds.h
@@ -24,8 +24,6 @@
#define EFX_WORKAROUND_7575 EFX_WORKAROUND_ALWAYS
/* TX pkt parser problem with <= 16 byte TXes */
#define EFX_WORKAROUND_9141 EFX_WORKAROUND_ALWAYS
-/* XGXS and XAUI reset sequencing in SW */
-#define EFX_WORKAROUND_9388 EFX_WORKAROUND_ALWAYS
/* Low rate CRC errors require XAUI reset */
#define EFX_WORKAROUND_10750 EFX_WORKAROUND_ALWAYS
/* TX_EV_PKT_ERR can be caused by a dangling TX descriptor
diff --git a/drivers/net/sfc/xfp_phy.c b/drivers/net/sfc/xfp_phy.c
index f6edecc..276151d 100644
--- a/drivers/net/sfc/xfp_phy.c
+++ b/drivers/net/sfc/xfp_phy.c
@@ -165,7 +165,6 @@ struct efx_phy_operations falcon_xfp_phy_ops = {
.check_hw = xfp_phy_check_hw,
.fini = xfp_phy_fini,
.clear_interrupt = xfp_phy_clear_interrupt,
- .reset_xaui = efx_port_dummy_op_void,
.mmds = XFP_REQUIRED_DEVS,
.loopbacks = XFP_LOOPBACKS,
};
--
Ben Hutchings, Senior Software Engineer, Solarflare Communications
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.
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