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Correct DMA channel number selection on AR816x family of

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controllers. For Gigabit Ethernet version of AR816x, AR813x/AR815x
except L1D controller, use vendor recommended ASPM parameters.
While here, increase alc_dma_burst array size.  Broken H/W can
return bogus value in theory.
This commit is contained in:
Pyun YongHyeon 2016-08-22 01:06:54 +00:00
parent 26a5d52f03
commit 03b4253bb8
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=304574
1 changed files with 11 additions and 7 deletions
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18
sys/dev/alc/if_alc.c
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@ -255,7 +255,7 @@ static struct resource_spec alc_irq_spec_msix[] = {
{ -1, 0, 0 }
};
static uint32_t alc_dma_burst[] = { 128, 256, 512, 1024, 2048, 4096, 0 };
static uint32_t alc_dma_burst[] = { 128, 256, 512, 1024, 2048, 4096, 0, 0 };
static int
alc_miibus_readreg(device_t dev, int phy, int reg)
@ -4184,13 +4184,17 @@ alc_init_locked(struct alc_softc *sc)
reg = (RXQ_CFG_RD_BURST_DEFAULT << RXQ_CFG_RD_BURST_SHIFT) &
RXQ_CFG_RD_BURST_MASK;
reg |= RXQ_CFG_RSS_MODE_DIS;
if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
reg |= (RXQ_CFG_816X_IDT_TBL_SIZE_DEFAULT <<
RXQ_CFG_816X_IDT_TBL_SIZE_SHIFT) &
RXQ_CFG_816X_IDT_TBL_SIZE_MASK;
if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0 &&
sc->alc_ident->deviceid != DEVICEID_ATHEROS_AR8151_V2)
reg |= RXQ_CFG_ASPM_THROUGHPUT_LIMIT_1M;
if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0)
reg |= RXQ_CFG_ASPM_THROUGHPUT_LIMIT_100M;
} else {
if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0 &&
sc->alc_ident->deviceid != DEVICEID_ATHEROS_AR8151_V2)
reg |= RXQ_CFG_ASPM_THROUGHPUT_LIMIT_100M;
}
CSR_WRITE_4(sc, ALC_RXQ_CFG, reg);
/* Configure DMA parameters. */
@ -4214,12 +4218,12 @@ alc_init_locked(struct alc_softc *sc)
switch (AR816X_REV(sc->alc_rev)) {
case AR816X_REV_A0:
case AR816X_REV_A1:
reg |= DMA_CFG_RD_CHNL_SEL_1;
reg |= DMA_CFG_RD_CHNL_SEL_2;
break;
case AR816X_REV_B0:
/* FALLTHROUGH */
default:
reg |= DMA_CFG_RD_CHNL_SEL_3;
reg |= DMA_CFG_RD_CHNL_SEL_4;
break;
}
}