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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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e283546c04
When an MCDI command times out (whether or not we find it
completed when we poll), call efx_mcdi_abandon(), which tells
all subsequent MCDI calls to fail-fast, and queues up an FLR.
Because an FLR doesn't lead to receiving any reboot even from
the MC (unlike most other types of reset), we have to call
efx_ef10_reset_mc_allocations.
In efx_start_all(), if a reset (of any kind) is pending, we
bail out.
Without this, attempts to reconfigure (e.g. change mtu) can
cause driver/mc state inconsistency if the first MCDI call
triggers an FLR.
For similar reasons, on EF10, in
efx_reset_down(method=RESET_TYPE_MCDI_TIMEOUT), set the number
of active queues to zero before calling efx_stop_all().
And, on farch, in efx_reset_up(method=RESET_TYPE_MCDI_TIMEOUT),
set active_queues and flushes pending & outstanding to zero.
efx_mcdi_mode_{poll,event}() should not take us out of fail-fast
mode. Instead, this is done by efx_mcdi_reset() after the FLR
completes.
The new FLR reset_type RESET_TYPE_MCDI_TIMEOUT doesn't really
fit into the hierarchy of reset 'scopes' whereby efx_reset()
decides some resets subsume others. Thus, it uses separate logic.
Also, fixed up some inconsistency around RESET_TYPE_MC_BIST,
which was in the wrong place in that hierarchy.
Signed-off-by: Shradha Shah <sshah@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
182 lines
6.3 KiB
C
182 lines
6.3 KiB
C
/****************************************************************************
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* Driver for Solarflare network controllers and boards
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* Copyright 2007-2013 Solarflare Communications Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation, incorporated herein by reference.
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*/
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#ifndef EFX_ENUM_H
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#define EFX_ENUM_H
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/**
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* enum efx_loopback_mode - loopback modes
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* @LOOPBACK_NONE: no loopback
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* @LOOPBACK_DATA: data path loopback
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* @LOOPBACK_GMAC: loopback within GMAC
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* @LOOPBACK_XGMII: loopback after XMAC
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* @LOOPBACK_XGXS: loopback within BPX after XGXS
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* @LOOPBACK_XAUI: loopback within BPX before XAUI serdes
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* @LOOPBACK_GMII: loopback within BPX after GMAC
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* @LOOPBACK_SGMII: loopback within BPX within SGMII
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* @LOOPBACK_XGBR: loopback within BPX within XGBR
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* @LOOPBACK_XFI: loopback within BPX before XFI serdes
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* @LOOPBACK_XAUI_FAR: loopback within BPX after XAUI serdes
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* @LOOPBACK_GMII_FAR: loopback within BPX before SGMII
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* @LOOPBACK_SGMII_FAR: loopback within BPX after SGMII
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* @LOOPBACK_XFI_FAR: loopback after XFI serdes
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* @LOOPBACK_GPHY: loopback within 1G PHY at unspecified level
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* @LOOPBACK_PHYXS: loopback within 10G PHY at PHYXS level
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* @LOOPBACK_PCS: loopback within 10G PHY at PCS level
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* @LOOPBACK_PMAPMD: loopback within 10G PHY at PMAPMD level
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* @LOOPBACK_XPORT: cross port loopback
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* @LOOPBACK_XGMII_WS: wireside loopback excluding XMAC
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* @LOOPBACK_XAUI_WS: wireside loopback within BPX within XAUI serdes
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* @LOOPBACK_XAUI_WS_FAR: wireside loopback within BPX including XAUI serdes
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* @LOOPBACK_XAUI_WS_NEAR: wireside loopback within BPX excluding XAUI serdes
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* @LOOPBACK_GMII_WS: wireside loopback excluding GMAC
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* @LOOPBACK_XFI_WS: wireside loopback excluding XFI serdes
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* @LOOPBACK_XFI_WS_FAR: wireside loopback including XFI serdes
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* @LOOPBACK_PHYXS_WS: wireside loopback within 10G PHY at PHYXS level
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*/
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/* Please keep up-to-date w.r.t the following two #defines */
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enum efx_loopback_mode {
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LOOPBACK_NONE = 0,
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LOOPBACK_DATA = 1,
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LOOPBACK_GMAC = 2,
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LOOPBACK_XGMII = 3,
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LOOPBACK_XGXS = 4,
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LOOPBACK_XAUI = 5,
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LOOPBACK_GMII = 6,
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LOOPBACK_SGMII = 7,
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LOOPBACK_XGBR = 8,
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LOOPBACK_XFI = 9,
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LOOPBACK_XAUI_FAR = 10,
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LOOPBACK_GMII_FAR = 11,
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LOOPBACK_SGMII_FAR = 12,
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LOOPBACK_XFI_FAR = 13,
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LOOPBACK_GPHY = 14,
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LOOPBACK_PHYXS = 15,
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LOOPBACK_PCS = 16,
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LOOPBACK_PMAPMD = 17,
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LOOPBACK_XPORT = 18,
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LOOPBACK_XGMII_WS = 19,
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LOOPBACK_XAUI_WS = 20,
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LOOPBACK_XAUI_WS_FAR = 21,
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LOOPBACK_XAUI_WS_NEAR = 22,
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LOOPBACK_GMII_WS = 23,
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LOOPBACK_XFI_WS = 24,
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LOOPBACK_XFI_WS_FAR = 25,
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LOOPBACK_PHYXS_WS = 26,
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LOOPBACK_MAX
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};
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#define LOOPBACK_TEST_MAX LOOPBACK_PMAPMD
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/* These loopbacks occur within the controller */
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#define LOOPBACKS_INTERNAL ((1 << LOOPBACK_DATA) | \
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(1 << LOOPBACK_GMAC) | \
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(1 << LOOPBACK_XGMII)| \
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(1 << LOOPBACK_XGXS) | \
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(1 << LOOPBACK_XAUI) | \
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(1 << LOOPBACK_GMII) | \
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(1 << LOOPBACK_SGMII) | \
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(1 << LOOPBACK_SGMII) | \
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(1 << LOOPBACK_XGBR) | \
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(1 << LOOPBACK_XFI) | \
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(1 << LOOPBACK_XAUI_FAR) | \
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(1 << LOOPBACK_GMII_FAR) | \
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(1 << LOOPBACK_SGMII_FAR) | \
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(1 << LOOPBACK_XFI_FAR) | \
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(1 << LOOPBACK_XGMII_WS) | \
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(1 << LOOPBACK_XAUI_WS) | \
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(1 << LOOPBACK_XAUI_WS_FAR) | \
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(1 << LOOPBACK_XAUI_WS_NEAR) | \
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(1 << LOOPBACK_GMII_WS) | \
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(1 << LOOPBACK_XFI_WS) | \
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(1 << LOOPBACK_XFI_WS_FAR))
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#define LOOPBACKS_WS ((1 << LOOPBACK_XGMII_WS) | \
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(1 << LOOPBACK_XAUI_WS) | \
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(1 << LOOPBACK_XAUI_WS_FAR) | \
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(1 << LOOPBACK_XAUI_WS_NEAR) | \
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(1 << LOOPBACK_GMII_WS) | \
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(1 << LOOPBACK_XFI_WS) | \
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(1 << LOOPBACK_XFI_WS_FAR) | \
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(1 << LOOPBACK_PHYXS_WS))
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#define LOOPBACKS_EXTERNAL(_efx) \
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((_efx)->loopback_modes & ~LOOPBACKS_INTERNAL & \
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~(1 << LOOPBACK_NONE))
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#define LOOPBACK_MASK(_efx) \
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(1 << (_efx)->loopback_mode)
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#define LOOPBACK_INTERNAL(_efx) \
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(!!(LOOPBACKS_INTERNAL & LOOPBACK_MASK(_efx)))
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#define LOOPBACK_EXTERNAL(_efx) \
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(!!(LOOPBACK_MASK(_efx) & LOOPBACKS_EXTERNAL(_efx)))
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#define LOOPBACK_CHANGED(_from, _to, _mask) \
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(!!((LOOPBACK_MASK(_from) ^ LOOPBACK_MASK(_to)) & (_mask)))
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#define LOOPBACK_OUT_OF(_from, _to, _mask) \
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((LOOPBACK_MASK(_from) & (_mask)) && !(LOOPBACK_MASK(_to) & (_mask)))
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/*****************************************************************************/
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/**
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* enum reset_type - reset types
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*
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* %RESET_TYPE_INVSIBLE, %RESET_TYPE_ALL, %RESET_TYPE_WORLD and
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* %RESET_TYPE_DISABLE specify the method/scope of the reset. The
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* other valuesspecify reasons, which efx_schedule_reset() will choose
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* a method for.
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*
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* Reset methods are numbered in order of increasing scope.
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*
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* @RESET_TYPE_INVISIBLE: Reset datapath and MAC (Falcon only)
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* @RESET_TYPE_RECOVER_OR_ALL: Try to recover. Apply RESET_TYPE_ALL
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* if unsuccessful.
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* @RESET_TYPE_ALL: Reset datapath, MAC and PHY
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* @RESET_TYPE_WORLD: Reset as much as possible
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* @RESET_TYPE_RECOVER_OR_DISABLE: Try to recover. Apply RESET_TYPE_DISABLE if
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* unsuccessful.
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* @RESET_TYPE_MC_BIST: MC entering BIST mode.
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* @RESET_TYPE_DISABLE: Reset datapath, MAC and PHY; leave NIC disabled
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* @RESET_TYPE_TX_WATCHDOG: reset due to TX watchdog
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* @RESET_TYPE_INT_ERROR: reset due to internal error
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* @RESET_TYPE_RX_RECOVERY: reset to recover from RX datapath errors
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* @RESET_TYPE_DMA_ERROR: DMA error
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* @RESET_TYPE_TX_SKIP: hardware completed empty tx descriptors
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* @RESET_TYPE_MC_FAILURE: MC reboot/assertion
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* @RESET_TYPE_MCDI_TIMEOUT: MCDI timeout.
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*/
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enum reset_type {
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RESET_TYPE_INVISIBLE,
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RESET_TYPE_RECOVER_OR_ALL,
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RESET_TYPE_ALL,
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RESET_TYPE_WORLD,
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RESET_TYPE_RECOVER_OR_DISABLE,
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RESET_TYPE_MC_BIST,
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RESET_TYPE_DISABLE,
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RESET_TYPE_MAX_METHOD,
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RESET_TYPE_TX_WATCHDOG,
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RESET_TYPE_INT_ERROR,
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RESET_TYPE_RX_RECOVERY,
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RESET_TYPE_DMA_ERROR,
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RESET_TYPE_TX_SKIP,
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RESET_TYPE_MC_FAILURE,
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/* RESET_TYPE_MCDI_TIMEOUT is actually a method, not just a reason, but
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* it doesn't fit the scope hierarchy (not well-ordered by inclusion).
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* We encode this by having its enum value be greater than
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* RESET_TYPE_MAX_METHOD. This also prevents issuing it with
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* efx_ioctl_reset.
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*/
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RESET_TYPE_MCDI_TIMEOUT,
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RESET_TYPE_MAX,
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};
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#endif /* EFX_ENUM_H */
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