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author | jfv <jfv@FreeBSD.org> | 2010-11-24 22:24:07 +0000 |
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committer | jfv <jfv@FreeBSD.org> | 2010-11-24 22:24:07 +0000 |
commit | a0f20794078b6e9c703227cfc2438a2ba45ca7ea (patch) | |
tree | e05a3b327fa6dc87e9ab99306f44c156d34aed25 /sys/dev/e1000 | |
parent | 9f53799703c37397a93e1233ceddba0211a8d851 (diff) | |
download | FreeBSD-src-a0f20794078b6e9c703227cfc2438a2ba45ca7ea.zip FreeBSD-src-a0f20794078b6e9c703227cfc2438a2ba45ca7ea.tar.gz |
The purpose of this change is to add a routine to
disable ASPM L0S and L1 LINK states on 82573, 82574,
and 82583. The theory is that this is behind certain
hangs being experienced by some customers.
Also included a small optimization in the rxeof routine
that was in my internal code.
Change the PBA size for pchlan, it was incorrect.
MFC after: 3 days
Diffstat (limited to 'sys/dev/e1000')
-rw-r--r-- | sys/dev/e1000/if_em.c | 138 |
1 files changed, 83 insertions, 55 deletions
diff --git a/sys/dev/e1000/if_em.c b/sys/dev/e1000/if_em.c index c41e144..6728a98 100644 --- a/sys/dev/e1000/if_em.c +++ b/sys/dev/e1000/if_em.c @@ -93,7 +93,7 @@ int em_display_debug_stats = 0; /********************************************************************* * Driver version: *********************************************************************/ -char em_driver_version[] = "7.1.7"; +char em_driver_version[] = "7.1.8"; /********************************************************************* * PCI Device ID Table @@ -272,6 +272,7 @@ static void em_get_wakeup(device_t); static void em_enable_wakeup(device_t); static int em_enable_phy_wakeup(struct adapter *); static void em_led_func(void *, int); +static void em_disable_aspm(struct adapter *); static int em_irq_fast(void *); @@ -1229,9 +1230,9 @@ em_init_locked(struct adapter *adapter) break; case e1000_ich9lan: case e1000_ich10lan: - case e1000_pchlan: pba = E1000_PBA_10K; break; + case e1000_pchlan: case e1000_pch2lan: pba = E1000_PBA_26K; break; @@ -2762,6 +2763,7 @@ em_reset(struct adapter *adapter) /* Issue a global reset */ e1000_reset_hw(hw); E1000_WRITE_REG(hw, E1000_WUC, 0); + em_disable_aspm(adapter); if (e1000_init_hw(hw) < 0) { device_printf(dev, "Hardware Initialization Failed\n"); @@ -4205,68 +4207,66 @@ em_rxeof(struct rx_ring *rxr, int count, int *done) len = le16toh(cur->length); eop = (status & E1000_RXD_STAT_EOP) != 0; - count--; - if (((cur->errors & E1000_RXD_ERR_FRAME_ERR_MASK) == 0) && - (rxr->discard == FALSE)) { + if ((rxr->discard == TRUE) || (cur->errors & + E1000_RXD_ERR_FRAME_ERR_MASK)) { + ifp->if_ierrors++; + ++rxr->rx_discarded; + if (!eop) /* Catch subsequent segs */ + rxr->discard = TRUE; + else + rxr->discard = FALSE; + em_rx_discard(rxr, i); + goto next_desc; + } - /* Assign correct length to the current fragment */ - mp = rxr->rx_buffers[i].m_head; - mp->m_len = len; + /* Assign correct length to the current fragment */ + mp = rxr->rx_buffers[i].m_head; + mp->m_len = len; - /* Trigger for refresh */ - rxr->rx_buffers[i].m_head = NULL; + /* Trigger for refresh */ + rxr->rx_buffers[i].m_head = NULL; - if (rxr->fmp == NULL) { - mp->m_pkthdr.len = len; - rxr->fmp = mp; /* Store the first mbuf */ - rxr->lmp = mp; - } else { - /* Chain mbuf's together */ - mp->m_flags &= ~M_PKTHDR; - rxr->lmp->m_next = mp; - rxr->lmp = rxr->lmp->m_next; - rxr->fmp->m_pkthdr.len += len; - } + /* First segment? */ + if (rxr->fmp == NULL) { + mp->m_pkthdr.len = len; + rxr->fmp = rxr->lmp = mp; + } else { + /* Chain mbuf's together */ + mp->m_flags &= ~M_PKTHDR; + rxr->lmp->m_next = mp; + rxr->lmp = mp; + rxr->fmp->m_pkthdr.len += len; + } - if (eop) { - rxr->fmp->m_pkthdr.rcvif = ifp; - ifp->if_ipackets++; - em_receive_checksum(cur, rxr->fmp); + if (eop) { + --count; + sendmp = rxr->fmp; + sendmp->m_pkthdr.rcvif = ifp; + ifp->if_ipackets++; + em_receive_checksum(cur, sendmp); #ifndef __NO_STRICT_ALIGNMENT - if (adapter->max_frame_size > - (MCLBYTES - ETHER_ALIGN) && - em_fixup_rx(rxr) != 0) - goto skip; + if (adapter->max_frame_size > + (MCLBYTES - ETHER_ALIGN) && + em_fixup_rx(rxr) != 0) + goto skip; #endif - if (status & E1000_RXD_STAT_VP) { - rxr->fmp->m_pkthdr.ether_vtag = - (le16toh(cur->special) & - E1000_RXD_SPC_VLAN_MASK); - rxr->fmp->m_flags |= M_VLANTAG; - } + if (status & E1000_RXD_STAT_VP) { + sendmp->m_pkthdr.ether_vtag = + (le16toh(cur->special) & + E1000_RXD_SPC_VLAN_MASK); + sendmp->m_flags |= M_VLANTAG; + } #ifdef EM_MULTIQUEUE - rxr->fmp->m_pkthdr.flowid = rxr->msix; - rxr->fmp->m_flags |= M_FLOWID; + sendmp->m_pkthdr.flowid = rxr->msix; + sendmp->m_flags |= M_FLOWID; #endif #ifndef __NO_STRICT_ALIGNMENT skip: #endif - sendmp = rxr->fmp; - rxr->fmp = NULL; - rxr->lmp = NULL; - } - } else { - ifp->if_ierrors++; - ++rxr->rx_discarded; - if (!eop) /* Catch subsequent segs */ - rxr->discard = TRUE; - else - rxr->discard = FALSE; - em_rx_discard(rxr, i); - sendmp = NULL; + rxr->fmp = rxr->lmp = NULL; } - +next_desc: /* Zero out the receive descriptors status. */ cur->status = 0; ++rxdone; /* cumulative for POLL */ @@ -4293,10 +4293,7 @@ skip: } /* Catch any remaining refresh work */ - if (processed != 0) { - em_refresh_mbufs(rxr, i); - processed = 0; - } + em_refresh_mbufs(rxr, i); rxr->next_to_check = i; if (done != NULL) @@ -4878,6 +4875,37 @@ em_led_func(void *arg, int onoff) EM_CORE_UNLOCK(adapter); } +/* +** Disable the L0S and L1 LINK states +*/ +static void +em_disable_aspm(struct adapter *adapter) +{ + int base, reg; + u16 link_cap,link_ctrl; + device_t dev = adapter->dev; + + switch (adapter->hw.mac.type) { + case e1000_82573: + case e1000_82574: + case e1000_82583: + break; + default: + return; + } + if (pci_find_extcap(dev, PCIY_EXPRESS, &base) != 0) + return; + reg = base + PCIR_EXPRESS_LINK_CAP; + link_cap = pci_read_config(dev, reg, 2); + if ((link_cap & PCIM_LINK_CAP_ASPM) == 0) + return; + reg = base + PCIR_EXPRESS_LINK_CTL; + link_ctrl = pci_read_config(dev, reg, 2); + link_ctrl &= 0xFFFC; /* turn off bit 1 and 2 */ + pci_write_config(dev, reg, link_ctrl, 2); + return; +} + /********************************************************************** * * Update the board statistics counters. |