From e5a20b9072eb38fad9b8cff4e6824c6cdbee5a00 Mon Sep 17 00:00:00 2001 From: "Lendacky, Thomas" Date: Thu, 3 Nov 2016 13:19:07 -0500 Subject: [PATCH] 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: Tom Lendacky Signed-off-by: David S. Miller --- drivers/net/ethernet/amd/xgbe/xgbe-dev.c | 36 +++++++++++++++++------- drivers/net/ethernet/amd/xgbe/xgbe.h | 1 + 2 files changed, 27 insertions(+), 10 deletions(-) diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-dev.c b/drivers/net/ethernet/amd/xgbe/xgbe-dev.c index b8a04e739344..fbd60ee0260b 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe-dev.c +++ b/drivers/net/ethernet/amd/xgbe/xgbe-dev.c @@ -2588,17 +2588,33 @@ static u64 xgbe_mmc_read(struct xgbe_prv_data *pdata, unsigned int reg_lo) bool read_hi; u64 val; - switch (reg_lo) { - /* These registers are always 64 bit */ - case MMC_TXOCTETCOUNT_GB_LO: - case MMC_TXOCTETCOUNT_G_LO: - case MMC_RXOCTETCOUNT_GB_LO: - case MMC_RXOCTETCOUNT_G_LO: - read_hi = true; - break; + 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 = false; + default: + read_hi = true; + } + } else { + switch (reg_lo) { + /* These registers are always 64 bit */ + case MMC_TXOCTETCOUNT_GB_LO: + case MMC_TXOCTETCOUNT_G_LO: + case MMC_RXOCTETCOUNT_GB_LO: + case MMC_RXOCTETCOUNT_G_LO: + read_hi = true; + break; + + default: + read_hi = false; + } } val = XGMAC_IOREAD(pdata, reg_lo); diff --git a/drivers/net/ethernet/amd/xgbe/xgbe.h b/drivers/net/ethernet/amd/xgbe/xgbe.h index 160b4980b2eb..7cbf91b4aa79 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe.h +++ b/drivers/net/ethernet/amd/xgbe/xgbe.h @@ -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 { -- 2.20.1