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sfc: Implement auto-negotiation

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Add infrastructure for auto-negotiation of speed, duplex and flow
control.

When using 10Xpress, auto-negotiate flow control.  While we're
at it, clean up the code to warn when partner is not 10GBASE-T
capable.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ben Hutchings
2008-12-12 21:50:46 -08:00
committed by David S. Miller
parent 177dfcd80f
commit 04cc8cacb0
9 changed files with 479 additions and 161 deletions
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32
drivers/net/sfc/mdio_10g.h
View File

@@ -81,6 +81,17 @@
#define MDIO_MMDREG_DEVS_PHYXS DEV_PRESENT_BIT(MDIO_MMD_PHYXS)
#define MDIO_MMDREG_DEVS_PCS DEV_PRESENT_BIT(MDIO_MMD_PCS)
#define MDIO_MMDREG_DEVS_PMAPMD DEV_PRESENT_BIT(MDIO_MMD_PMAPMD)
#define MDIO_MMDREG_DEVS_AN DEV_PRESENT_BIT(MDIO_MMD_AN)
/* Bits in MMDREG_SPEED */
#define MDIO_MMDREG_SPEED_10G_LBN 0
#define MDIO_MMDREG_SPEED_10G_WIDTH 1
#define MDIO_MMDREG_SPEED_1000M_LBN 4
#define MDIO_MMDREG_SPEED_1000M_WIDTH 1
#define MDIO_MMDREG_SPEED_100M_LBN 5
#define MDIO_MMDREG_SPEED_100M_WIDTH 1
#define MDIO_MMDREG_SPEED_10M_LBN 6
#define MDIO_MMDREG_SPEED_10M_WIDTH 1
/* Bits in MMDREG_STAT2 */
#define MDIO_MMDREG_STAT2_PRESENT_VAL (2)
@@ -119,12 +130,20 @@
#define MDIO_PHYXS_LANE_ALIGNED_LBN (12)
/* AN registers */
#define MDIO_AN_CTRL_XNP_LBN 13
#define MDIO_AN_STATUS (1)
#define MDIO_AN_STATUS_XNP_LBN (7)
#define MDIO_AN_STATUS_PAGE_LBN (6)
#define MDIO_AN_STATUS_AN_DONE_LBN (5)
#define MDIO_AN_STATUS_LP_AN_CAP_LBN (0)
#define MDIO_AN_ADVERTISE 16
#define MDIO_AN_ADVERTISE_XNP_LBN 12
#define MDIO_AN_LPA 19
#define MDIO_AN_XNP 22
#define MDIO_AN_LPA_XNP 25
#define MDIO_AN_10GBT_ADVERTISE 32
#define MDIO_AN_10GBT_STATUS (33)
#define MDIO_AN_10GBT_STATUS_MS_FLT_LBN (15) /* MASTER/SLAVE config fault */
#define MDIO_AN_10GBT_STATUS_MS_LBN (14) /* MASTER/SLAVE config */
@@ -251,10 +270,23 @@ extern void mdio_clause45_set_mmds_lpower(struct efx_nic *efx,
extern void mdio_clause45_get_settings(struct efx_nic *efx,
struct ethtool_cmd *ecmd);
/* Read (some of) the PHY settings over MDIO */
extern void
mdio_clause45_get_settings_ext(struct efx_nic *efx, struct ethtool_cmd *ecmd,
u32 xnp, u32 xnp_lpa);
/* Set (some of) the PHY settings over MDIO */
extern int mdio_clause45_set_settings(struct efx_nic *efx,
struct ethtool_cmd *ecmd);
/* Set pause parameters to be advertised through AN (if available) */
extern void mdio_clause45_set_pause(struct efx_nic *efx);
/* Get pause parameters from AN if available (otherwise return
* requested pause parameters)
*/
enum efx_fc_type mdio_clause45_get_pause(struct efx_nic *efx);
/* Wait for specified MMDs to exit reset within a timeout */
extern int mdio_clause45_wait_reset_mmds(struct efx_nic *efx,
unsigned int mmd_mask);