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workarounds.h
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1 /****************************************************************************
2  * Driver for Solarflare Solarstorm network controllers and boards
3  * Copyright 2006-2010 Solarflare Communications Inc.
4  *
5  * This program is free software; you can redistribute it and/or modify it
6  * under the terms of the GNU General Public License version 2 as published
7  * by the Free Software Foundation, incorporated herein by reference.
8  */
9 
10 #ifndef EFX_WORKAROUNDS_H
11 #define EFX_WORKAROUNDS_H
12 
13 /*
14  * Hardware workarounds.
15  * Bug numbers are from Solarflare's Bugzilla.
16  */
17 
18 #define EFX_WORKAROUND_ALWAYS(efx) 1
19 #define EFX_WORKAROUND_FALCON_A(efx) (efx_nic_rev(efx) <= EFX_REV_FALCON_A1)
20 #define EFX_WORKAROUND_FALCON_AB(efx) (efx_nic_rev(efx) <= EFX_REV_FALCON_B0)
21 #define EFX_WORKAROUND_SIENA(efx) (efx_nic_rev(efx) == EFX_REV_SIENA_A0)
22 #define EFX_WORKAROUND_10G(efx) 1
23 
24 /* XAUI resets if link not detected */
25 #define EFX_WORKAROUND_5147 EFX_WORKAROUND_ALWAYS
26 /* RX PCIe double split performance issue */
27 #define EFX_WORKAROUND_7575 EFX_WORKAROUND_ALWAYS
28 /* Bit-bashed I2C reads cause performance drop */
29 #define EFX_WORKAROUND_7884 EFX_WORKAROUND_10G
30 /* TX_EV_PKT_ERR can be caused by a dangling TX descriptor
31  * or a PCIe error (bug 11028) */
32 #define EFX_WORKAROUND_10727 EFX_WORKAROUND_ALWAYS
33 /* Transmit flow control may get disabled */
34 #define EFX_WORKAROUND_11482 EFX_WORKAROUND_FALCON_AB
35 /* Truncated IPv4 packets can confuse the TX packet parser */
36 #define EFX_WORKAROUND_15592 EFX_WORKAROUND_FALCON_AB
37 /* Legacy ISR read can return zero once */
38 #define EFX_WORKAROUND_15783 EFX_WORKAROUND_ALWAYS
39 /* Legacy interrupt storm when interrupt fifo fills */
40 #define EFX_WORKAROUND_17213 EFX_WORKAROUND_SIENA
41 
42 /* Spurious parity errors in TSORT buffers */
43 #define EFX_WORKAROUND_5129 EFX_WORKAROUND_FALCON_A
44 /* Unaligned read request >512 bytes after aligning may break TSORT */
45 #define EFX_WORKAROUND_5391 EFX_WORKAROUND_FALCON_A
46 /* iSCSI parsing errors */
47 #define EFX_WORKAROUND_5583 EFX_WORKAROUND_FALCON_A
48 /* RX events go missing */
49 #define EFX_WORKAROUND_5676 EFX_WORKAROUND_FALCON_A
50 /* RX_RESET on A1 */
51 #define EFX_WORKAROUND_6555 EFX_WORKAROUND_FALCON_A
52 /* Increase filter depth to avoid RX_RESET */
53 #define EFX_WORKAROUND_7244 EFX_WORKAROUND_FALCON_A
54 /* Flushes may never complete */
55 #define EFX_WORKAROUND_7803 EFX_WORKAROUND_FALCON_AB
56 /* Leak overlength packets rather than free */
57 #define EFX_WORKAROUND_8071 EFX_WORKAROUND_FALCON_A
58 
59 #endif /* EFX_WORKAROUNDS_H */