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authorBen Hutchings <bhutchings@solarflare.com>2008-05-07 12:55:13 +0100
committerJeff Garzik <jgarzik@redhat.com>2008-05-13 01:31:40 -0400
commit75f2d3eac93277fa022b2fbe51257e856575e757 (patch)
tree72c693ec5039e4c30b51713a6a550829fd17c1d1 /drivers/net/sfc
parentb9b39b625cf57cd0ea998717598b68963cbec3cb (diff)
downloadop-kernel-dev-75f2d3eac93277fa022b2fbe51257e856575e757.zip
op-kernel-dev-75f2d3eac93277fa022b2fbe51257e856575e757.tar.gz
[netdrvr] sfc: Add phy_flash_cfg module parameter and implementation
The 10Xpress PHY supports flash upgrades through MDIO, but needs to be put in upgrade mode at power-up. This adds a module parameter and other logic to support that. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/net/sfc')
-rw-r--r--drivers/net/sfc/boards.h2
-rw-r--r--drivers/net/sfc/falcon_xmac.c4
-rw-r--r--drivers/net/sfc/sfe4001.c14
-rw-r--r--drivers/net/sfc/tenxpress.c10
4 files changed, 26 insertions, 4 deletions
diff --git a/drivers/net/sfc/boards.h b/drivers/net/sfc/boards.h
index f56341d..695764d 100644
--- a/drivers/net/sfc/boards.h
+++ b/drivers/net/sfc/boards.h
@@ -22,5 +22,7 @@ enum efx_board_type {
extern int efx_set_board_info(struct efx_nic *efx, u16 revision_info);
extern int sfe4001_poweron(struct efx_nic *efx);
extern void sfe4001_poweroff(struct efx_nic *efx);
+/* Are we putting the PHY into flash config mode */
+extern unsigned int sfe4001_phy_flash_cfg;
#endif
diff --git a/drivers/net/sfc/falcon_xmac.c b/drivers/net/sfc/falcon_xmac.c
index aa7521b..d99efe2 100644
--- a/drivers/net/sfc/falcon_xmac.c
+++ b/drivers/net/sfc/falcon_xmac.c
@@ -69,6 +69,10 @@ static int falcon_reset_xmac(struct efx_nic *efx)
udelay(10);
}
+ /* This often fails when DSP is disabled, ignore it */
+ if (sfe4001_phy_flash_cfg != 0)
+ return 0;
+
EFX_ERR(efx, "timed out waiting for XMAC core reset\n");
return -ETIMEDOUT;
}
diff --git a/drivers/net/sfc/sfe4001.c b/drivers/net/sfc/sfe4001.c
index 11fa9fb..725d1a5 100644
--- a/drivers/net/sfc/sfe4001.c
+++ b/drivers/net/sfc/sfe4001.c
@@ -130,6 +130,15 @@ void sfe4001_poweroff(struct efx_nic *efx)
(void) efx_i2c_read(i2c, MAX6647, RSL, &in, 1);
}
+/* The P0_EN_3V3X line on SFE4001 boards (from A2 onward) is connected
+ * to the FLASH_CFG_1 input on the DSP. We must keep it high at power-
+ * up to allow writing the flash (done through MDIO from userland).
+ */
+unsigned int sfe4001_phy_flash_cfg;
+module_param_named(phy_flash_cfg, sfe4001_phy_flash_cfg, uint, 0444);
+MODULE_PARM_DESC(phy_flash_cfg,
+ "Force PHY to enter flash configuration mode");
+
/* This board uses an I2C expander to provider power to the PHY, which needs to
* be turned on before the PHY can be used.
* Context: Process context, rtnl lock held
@@ -203,6 +212,8 @@ int sfe4001_poweron(struct efx_nic *efx)
out = 0xff & ~((1 << P0_EN_1V2_LBN) | (1 << P0_EN_2V5_LBN) |
(1 << P0_EN_3V3X_LBN) | (1 << P0_EN_5V_LBN) |
(1 << P0_X_TRST_LBN));
+ if (sfe4001_phy_flash_cfg)
+ out |= 1 << P0_EN_3V3X_LBN;
rc = efx_i2c_write(i2c, PCA9539, P0_OUT, &out, 1);
if (rc)
@@ -226,6 +237,9 @@ int sfe4001_poweron(struct efx_nic *efx)
if (in & (1 << P1_AFE_PWD_LBN))
goto done;
+ /* DSP doesn't look powered in flash config mode */
+ if (sfe4001_phy_flash_cfg)
+ goto done;
} while (++count < 20);
EFX_INFO(efx, "timed out waiting for power\n");
diff --git a/drivers/net/sfc/tenxpress.c b/drivers/net/sfc/tenxpress.c
index a2e9f79..d8df031 100644
--- a/drivers/net/sfc/tenxpress.c
+++ b/drivers/net/sfc/tenxpress.c
@@ -199,10 +199,12 @@ static int tenxpress_phy_init(struct efx_nic *efx)
tenxpress_set_state(efx, TENXPRESS_STATUS_NORMAL);
- rc = mdio_clause45_wait_reset_mmds(efx,
- TENXPRESS_REQUIRED_DEVS);
- if (rc < 0)
- goto fail;
+ if (!sfe4001_phy_flash_cfg) {
+ rc = mdio_clause45_wait_reset_mmds(efx,
+ TENXPRESS_REQUIRED_DEVS);
+ if (rc < 0)
+ goto fail;
+ }
rc = mdio_clause45_check_mmds(efx, TENXPRESS_REQUIRED_DEVS, 0);
if (rc < 0)
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