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The fbnic driver is planning to make use of the XPCS driver to enable support for PCS and better integration with phylink. To do this though we will need to enable several workarounds since the PMD interface for fbnic is likely to be unique since it is a mix of two different vendor products with a unique wrapper around the IP. I have generated a PHY identifier based on IEEE 802.3-2022 22.2.4.3.1 using an OUI belonging to Meta Platforms and used with our NICs. Using this we will provide it as the PMD ID via the SW based MDIO interface so that the fbnic device can be identified and necessary workarounds enabled in the XPCS driver. As an initial workaround this change adds an exception so that soft_reset is not set when the driver is initially bound to the PCS. In addition I have added logic to integrate the PMD Rx signal detect state into the link state for the PCS. With this we can avoid the link coming up too soon on the FBNIC PMD and as a result of it being in the training state so we can avoid link flaps. Signed-off-by: Alexander Duyck <alexanderduyck@fb.com> Link: https://patch.msgid.link/176374321695.959489.6648161125012056619.stgit@ahduyck-xeon-server.home.arpa Signed-off-by: Paolo Abeni <pabeni@redhat.com>
64 lines
1.6 KiB
C
64 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2020 Synopsys, Inc. and/or its affiliates.
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* Synopsys DesignWare XPCS helpers
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*/
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#ifndef __LINUX_PCS_XPCS_H
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#define __LINUX_PCS_XPCS_H
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#include <linux/clk.h>
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#include <linux/fwnode.h>
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#include <linux/mdio.h>
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#include <linux/phy.h>
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#include <linux/phylink.h>
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#include <linux/types.h>
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/* AN mode */
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#define DW_AN_C73 1
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#define DW_AN_C37_SGMII 2
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#define DW_2500BASEX 3
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#define DW_AN_C37_1000BASEX 4
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#define DW_10GBASER 5
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enum dw_xpcs_pcs_id {
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DW_XPCS_ID_NATIVE = 0,
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NXP_SJA1105_XPCS_ID = 0x00000010,
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NXP_SJA1110_XPCS_ID = 0x00000020,
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DW_XPCS_ID = 0x7996ced0,
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DW_XPCS_ID_MASK = 0xffffffff,
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};
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enum dw_xpcs_pma_id {
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DW_XPCS_PMA_ID_NATIVE = 0,
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DW_XPCS_PMA_GEN1_3G_ID,
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DW_XPCS_PMA_GEN2_3G_ID,
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DW_XPCS_PMA_GEN2_6G_ID,
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DW_XPCS_PMA_GEN4_3G_ID,
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DW_XPCS_PMA_GEN4_6G_ID,
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DW_XPCS_PMA_GEN5_10G_ID,
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DW_XPCS_PMA_GEN5_12G_ID,
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WX_TXGBE_XPCS_PMA_10G_ID = 0xfc806000,
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/* Meta Platforms OUI 88:25:08, model 0, revision 0 */
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MP_FBNIC_XPCS_PMA_100G_ID = 0x46904000,
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};
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struct dw_xpcs_info {
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u32 pcs;
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u32 pma;
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};
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struct dw_xpcs;
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struct phylink_pcs *xpcs_to_phylink_pcs(struct dw_xpcs *xpcs);
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int xpcs_get_an_mode(struct dw_xpcs *xpcs, phy_interface_t interface);
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void xpcs_config_eee_mult_fact(struct dw_xpcs *xpcs, u8 mult_fact);
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struct dw_xpcs *xpcs_create_mdiodev(struct mii_bus *bus, int addr);
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struct dw_xpcs *xpcs_create_fwnode(struct fwnode_handle *fwnode);
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void xpcs_destroy(struct dw_xpcs *xpcs);
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struct phylink_pcs *xpcs_create_pcs_mdiodev(struct mii_bus *bus, int addr);
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void xpcs_destroy_pcs(struct phylink_pcs *pcs);
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#endif /* __LINUX_PCS_XPCS_H */
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