svn commit: r287914 - head/sys/dev/e1000
Sean Bruno
sbruno at FreeBSD.org
Thu Sep 17 15:11:46 UTC 2015
Author: sbruno
Date: Thu Sep 17 15:11:45 2015
New Revision: 287914
URL: https://svnweb.freebsd.org/changeset/base/287914
Log:
Add Intel Skylake/I219 Support
- New em(4) device in currently shipping products
Differential Revision: https://reviews.freebsd.org/D3163
Submitted by: erj at freebsd.org
Reviewed by: jfv at freebsd.org
MFC after: 2 weeks
Sponsored by: Intel Corporation
Modified:
head/sys/dev/e1000/if_em.c
head/sys/dev/e1000/if_em.h
Modified: head/sys/dev/e1000/if_em.c
==============================================================================
--- head/sys/dev/e1000/if_em.c Thu Sep 17 14:22:52 2015 (r287913)
+++ head/sys/dev/e1000/if_em.c Thu Sep 17 15:11:45 2015 (r287914)
@@ -103,7 +103,7 @@ int em_display_debug_stats = 0;
/*********************************************************************
* Driver version:
*********************************************************************/
-char em_driver_version[] = "7.4.2";
+char em_driver_version[] = "7.5.2";
/*********************************************************************
* PCI Device ID Table
@@ -191,6 +191,11 @@ static em_vendor_info_t em_vendor_info_a
{ 0x8086, E1000_DEV_ID_PCH_I218_V2, PCI_ANY_ID, PCI_ANY_ID, 0},
{ 0x8086, E1000_DEV_ID_PCH_I218_LM3, PCI_ANY_ID, PCI_ANY_ID, 0},
{ 0x8086, E1000_DEV_ID_PCH_I218_V3, PCI_ANY_ID, PCI_ANY_ID, 0},
+ { 0x8086, E1000_DEV_ID_PCH_SPT_I219_LM, PCI_ANY_ID, PCI_ANY_ID, 0},
+ { 0x8086, E1000_DEV_ID_PCH_SPT_I219_V, PCI_ANY_ID, PCI_ANY_ID, 0},
+ { 0x8086, E1000_DEV_ID_PCH_SPT_I219_LM2,
+ PCI_ANY_ID, PCI_ANY_ID, 0},
+ { 0x8086, E1000_DEV_ID_PCH_SPT_I219_V2, PCI_ANY_ID, PCI_ANY_ID, 0},
/* required last entry */
{ 0, 0, 0, 0, 0}
};
@@ -238,6 +243,7 @@ static void em_free_pci_resources(struct
static void em_local_timer(void *);
static void em_reset(struct adapter *);
static int em_setup_interface(device_t, struct adapter *);
+static void em_flush_desc_rings(struct adapter *);
static void em_setup_transmit_structures(struct adapter *);
static void em_initialize_transmit_unit(struct adapter *);
@@ -584,6 +590,20 @@ em_attach(device_t dev)
}
/*
+ ** In the new SPT device flash is not a
+ ** separate BAR, rather it is also in BAR0,
+ ** so use the same tag and handle for the
+ ** FLASH read/write macros in the shared
+ ** code.
+ */
+ if (hw->mac.type == e1000_pch_spt) {
+ adapter->osdep.flash_bus_space_tag =
+ adapter->osdep.mem_bus_space_tag;
+ adapter->osdep.flash_bus_space_handle =
+ adapter->osdep.mem_bus_space_handle;
+ }
+
+ /*
* Setup MSI/X or MSI if PCI Express
*/
adapter->msix = em_setup_msix(adapter);
@@ -1168,6 +1188,7 @@ em_ioctl(if_t ifp, u_long command, caddr
case e1000_ich10lan:
case e1000_pch2lan:
case e1000_pch_lpt:
+ case e1000_pch_spt:
case e1000_82574:
case e1000_82583:
case e1000_80003es2lan: /* 9K Jumbo Frame size */
@@ -1369,8 +1390,15 @@ em_init_locked(struct adapter *adapter)
if_clearhwassist(ifp);
if (if_getcapenable(ifp) & IFCAP_TXCSUM)
if_sethwassistbits(ifp, CSUM_TCP | CSUM_UDP, 0);
- if (if_getcapenable(ifp) & IFCAP_TSO4)
- if_sethwassistbits(ifp, CSUM_TSO, 0);
+ /*
+ ** There have proven to be problems with TSO when not
+ ** at full gigabit speed, so disable the assist automatically
+ ** when at lower speeds. -jfv
+ */
+ if (if_getcapenable(ifp) & IFCAP_TSO4) {
+ if (adapter->link_speed == SPEED_1000)
+ if_sethwassistbits(ifp, CSUM_TSO, 0);
+ }
/* Configure for OS presence */
em_init_manageability(adapter);
@@ -2350,6 +2378,8 @@ em_update_link_status(struct adapter *ad
switch (hw->phy.media_type) {
case e1000_media_type_copper:
if (hw->mac.get_link_status) {
+ if (hw->mac.type == e1000_pch_spt)
+ msec_delay(50);
/* Do the work to read phy */
e1000_check_for_link(hw);
link_check = !hw->mac.get_link_status;
@@ -2441,6 +2471,10 @@ em_stop(void *arg)
EM_TX_UNLOCK(txr);
}
+ /* I219 needs some special flushing to avoid hangs */
+ if (adapter->hw.mac.type == e1000_pch_spt)
+ em_flush_desc_rings(adapter);
+
e1000_reset_hw(&adapter->hw);
E1000_WRITE_REG(&adapter->hw, E1000_WUC, 0);
@@ -2860,6 +2894,116 @@ msi:
}
+/*
+** The 3 following flush routines are used as a workaround in the
+** I219 client parts and only for them.
+**
+** em_flush_tx_ring - remove all descriptors from the tx_ring
+**
+** We want to clear all pending descriptors from the TX ring.
+** zeroing happens when the HW reads the regs. We assign the ring itself as
+** the data of the next descriptor. We don't care about the data we are about
+** to reset the HW.
+*/
+static void
+em_flush_tx_ring(struct adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ struct tx_ring *txr = adapter->tx_rings;
+ struct e1000_tx_desc *txd;
+ u32 tctl, txd_lower = E1000_TXD_CMD_IFCS;
+ u16 size = 512;
+
+ tctl = E1000_READ_REG(hw, E1000_TCTL);
+ E1000_WRITE_REG(hw, E1000_TCTL, tctl | E1000_TCTL_EN);
+
+ txd = &txr->tx_base[txr->next_avail_desc++];
+ if (txr->next_avail_desc == adapter->num_tx_desc)
+ txr->next_avail_desc = 0;
+
+ /* Just use the ring as a dummy buffer addr */
+ txd->buffer_addr = txr->txdma.dma_paddr;
+ txd->lower.data = htole32(txd_lower | size);
+ txd->upper.data = 0;
+
+ /* flush descriptors to memory before notifying the HW */
+ wmb();
+
+ E1000_WRITE_REG(hw, E1000_TDT(0), txr->next_avail_desc);
+ mb();
+ usec_delay(250);
+}
+
+/*
+** em_flush_rx_ring - remove all descriptors from the rx_ring
+**
+** Mark all descriptors in the RX ring as consumed and disable the rx ring
+*/
+static void
+em_flush_rx_ring(struct adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ u32 rctl, rxdctl;
+
+ rctl = E1000_READ_REG(hw, E1000_RCTL);
+ E1000_WRITE_REG(hw, E1000_RCTL, rctl & ~E1000_RCTL_EN);
+ E1000_WRITE_FLUSH(hw);
+ usec_delay(150);
+
+ rxdctl = E1000_READ_REG(hw, E1000_RXDCTL(0));
+ /* zero the lower 14 bits (prefetch and host thresholds) */
+ rxdctl &= 0xffffc000;
+ /*
+ * update thresholds: prefetch threshold to 31, host threshold to 1
+ * and make sure the granularity is "descriptors" and not "cache lines"
+ */
+ rxdctl |= (0x1F | (1 << 8) | E1000_RXDCTL_THRESH_UNIT_DESC);
+ E1000_WRITE_REG(hw, E1000_RXDCTL(0), rxdctl);
+
+ /* momentarily enable the RX ring for the changes to take effect */
+ E1000_WRITE_REG(hw, E1000_RCTL, rctl | E1000_RCTL_EN);
+ E1000_WRITE_FLUSH(hw);
+ usec_delay(150);
+ E1000_WRITE_REG(hw, E1000_RCTL, rctl & ~E1000_RCTL_EN);
+}
+
+/*
+** em_flush_desc_rings - remove all descriptors from the descriptor rings
+**
+** In i219, the descriptor rings must be emptied before resetting the HW
+** or before changing the device state to D3 during runtime (runtime PM).
+**
+** Failure to do this will cause the HW to enter a unit hang state which can
+** only be released by PCI reset on the device
+**
+*/
+static void
+em_flush_desc_rings(struct adapter *adapter)
+{
+ struct e1000_hw *hw = &adapter->hw;
+ device_t dev = adapter->dev;
+ u16 hang_state;
+ u32 fext_nvm11, tdlen;
+
+ /* First, disable MULR fix in FEXTNVM11 */
+ fext_nvm11 = E1000_READ_REG(hw, E1000_FEXTNVM11);
+ fext_nvm11 |= E1000_FEXTNVM11_DISABLE_MULR_FIX;
+ E1000_WRITE_REG(hw, E1000_FEXTNVM11, fext_nvm11);
+
+ /* do nothing if we're not in faulty state, or if the queue is empty */
+ tdlen = E1000_READ_REG(hw, E1000_TDLEN(0));
+ hang_state = pci_read_config(dev, PCICFG_DESC_RING_STATUS, 2);
+ if (!(hang_state & FLUSH_DESC_REQUIRED) || !tdlen)
+ return;
+ em_flush_tx_ring(adapter);
+
+ /* recheck, maybe the fault is caused by the rx ring */
+ hang_state = pci_read_config(dev, PCICFG_DESC_RING_STATUS, 2);
+ if (hang_state & FLUSH_DESC_REQUIRED)
+ em_flush_rx_ring(adapter);
+}
+
+
/*********************************************************************
*
* Initialize the hardware to a configuration
@@ -2921,6 +3065,7 @@ em_reset(struct adapter *adapter)
case e1000_pchlan:
case e1000_pch2lan:
case e1000_pch_lpt:
+ case e1000_pch_spt:
pba = E1000_PBA_26K;
break;
default:
@@ -2979,6 +3124,7 @@ em_reset(struct adapter *adapter)
break;
case e1000_pch2lan:
case e1000_pch_lpt:
+ case e1000_pch_spt:
hw->fc.high_water = 0x5C20;
hw->fc.low_water = 0x5048;
hw->fc.pause_time = 0x0650;
@@ -3003,6 +3149,10 @@ em_reset(struct adapter *adapter)
break;
}
+ /* I219 needs some special flushing to avoid hangs */
+ if (hw->mac.type == e1000_pch_spt)
+ em_flush_desc_rings(adapter);
+
/* Issue a global reset */
e1000_reset_hw(hw);
E1000_WRITE_REG(hw, E1000_WUC, 0);
@@ -3599,6 +3749,15 @@ em_initialize_transmit_unit(struct adapt
/* This write will effectively turn on the transmit unit. */
E1000_WRITE_REG(&adapter->hw, E1000_TCTL, tctl);
+ if (hw->mac.type == e1000_pch_spt) {
+ u32 reg;
+ reg = E1000_READ_REG(hw, E1000_IOSFPC);
+ reg |= E1000_RCTL_RDMTS_HEX;
+ E1000_WRITE_REG(hw, E1000_IOSFPC, reg);
+ reg = E1000_READ_REG(hw, E1000_TARC(0));
+ reg |= E1000_TARC0_CB_MULTIQ_3_REQ;
+ E1000_WRITE_REG(hw, E1000_TARC(0), reg);
+ }
}
Modified: head/sys/dev/e1000/if_em.h
==============================================================================
--- head/sys/dev/e1000/if_em.h Thu Sep 17 14:22:52 2015 (r287913)
+++ head/sys/dev/e1000/if_em.h Thu Sep 17 15:11:45 2015 (r287914)
@@ -218,6 +218,9 @@
#define EM_TX_HUNG 0x80000000
#define EM_TX_MAXTRIES 10
+#define PCICFG_DESC_RING_STATUS 0xe4
+#define FLUSH_DESC_REQUIRED 0x100
+
/*
* TDBA/RDBA should be aligned on 16 byte boundary. But TDLEN/RDLEN should be
* multiple of 128 bytes. So we align TDBA/RDBA on 128 byte boundary. This will
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