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Commit e5a20b90 authored by Lendacky, Thomas's avatar Lendacky, Thomas Committed by David S. Miller
Browse files

amd-xgbe: Support for 64-bit management counter registers 



Add support for reading all management counter registers as 64-bit
values.  The indication of whether to read the high 32-bits to form
a 64-bit value is indicated in the version data.

Signed-off-by: default avatarTom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b03a4a6f

drivers/net/ethernet/amd/xgbe/xgbe-dev.c

+26 −10
Original line number Diff line number Diff line
@@ -2588,6 +2588,21 @@ static u64 xgbe_mmc_read(struct xgbe_prv_data *pdata, unsigned int reg_lo) 
	bool read_hi;

	u64 val;



	if (pdata->vdata->mmc_64bit) {

		switch (reg_lo) {

		/* These registers are always 32 bit */

		case MMC_RXRUNTERROR:

		case MMC_RXJABBERERROR:

		case MMC_RXUNDERSIZE_G:

		case MMC_RXOVERSIZE_G:

		case MMC_RXWATCHDOGERROR:

			read_hi = false;

			break;



		default:

			read_hi = true;

		}

	} else {

		switch (reg_lo) {

		/* These registers are always 64 bit */

		case MMC_TXOCTETCOUNT_GB_LO:
@@ -2600,6 +2615,7 @@ static u64 xgbe_mmc_read(struct xgbe_prv_data *pdata, unsigned int reg_lo) 
		default:

			read_hi = false;

		}

	}



	val = XGMAC_IOREAD(pdata, reg_lo);

drivers/net/ethernet/amd/xgbe/xgbe.h

+1 −0
Original line number Diff line number Diff line
@@ -804,6 +804,7 @@ struct xgbe_hw_features { 
struct xgbe_version_data {

	void (*init_function_ptrs_phy_impl)(struct xgbe_phy_if *);

	enum xgbe_xpcs_access xpcs_access;

	unsigned int mmc_64bit;

};



struct xgbe_prv_data {