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It is known that all Broadcom controllers have 4GB boundary DMA

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bug.  Apply workaround to all controllers.
This commit is contained in:
Pyun YongHyeon 2011-10-26 18:19:50 +00:00
parent 5512ca01af
commit d462212405
1 changed files with 2 additions and 4 deletions
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6
sys/dev/bge/if_bge.c
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@ -2918,15 +2918,13 @@ bge_attach(device_t dev)
sc->bge_mi_mode |= BGE_MIMODE_AUTOPOLL;
/*
* All controllers that are not 5755 or higher have 4GB
* boundary DMA bug.
* All Broadcom controllers have 4GB boundary DMA bug.
* Whenever an address crosses a multiple of the 4GB boundary
* (including 4GB, 8Gb, 12Gb, etc.) and makes the transition
* from 0xX_FFFF_FFFF to 0x(X+1)_0000_0000 an internal DMA
* state machine will lockup and cause the device to hang.
*/
if (BGE_IS_5755_PLUS(sc) == 0)
sc->bge_flags |= BGE_FLAG_4G_BNDRY_BUG;
sc->bge_flags |= BGE_FLAG_4G_BNDRY_BUG;
misccfg = CSR_READ_4(sc, BGE_MISC_CFG) & BGE_MISCCFG_BOARD_ID;
if (sc->bge_asicrev == BGE_ASICREV_BCM5705) {