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[src/trunk]: src/sys/dev/pci - Initialize some hardware bits for 8257[1234], ...
details: https://anonhg.NetBSD.org/src/rev/2ebde7da7166
branches: trunk
changeset: 336178:2ebde7da7166
user: msaitoh <msaitoh%NetBSD.org@localhost>
date: Sun Feb 15 21:32:33 2015 +0000
description:
- Initialize some hardware bits for 8257[1234], 82583, 80003, ICH* and PCH*.
Some of them are workaround code. From other *BSDs, Linux and documents.
- Add comment.
- Fix typo in comment.
diffstat:
sys/dev/pci/if_wm.c | 215 ++++++++++++++++++++++++++++++++++++++++++++++--
sys/dev/pci/if_wmreg.h | 22 ++++-
2 files changed, 222 insertions(+), 15 deletions(-)
diffs (truncated from 350 to 300 lines):
diff -r f8755ecf34db -r 2ebde7da7166 sys/dev/pci/if_wm.c
--- a/sys/dev/pci/if_wm.c Sun Feb 15 21:28:17 2015 +0000
+++ b/sys/dev/pci/if_wm.c Sun Feb 15 21:32:33 2015 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: if_wm.c,v 1.311 2015/02/13 09:00:50 msaitoh Exp $ */
+/* $NetBSD: if_wm.c,v 1.312 2015/02/15 21:32:33 msaitoh Exp $ */
/*
* Copyright (c) 2001, 2002, 2003, 2004 Wasabi Systems, Inc.
@@ -81,7 +81,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_wm.c,v 1.311 2015/02/13 09:00:50 msaitoh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_wm.c,v 1.312 2015/02/15 21:32:33 msaitoh Exp $");
#ifdef _KERNEL_OPT
#include "opt_net_mpsafe.h"
@@ -565,6 +565,7 @@
static void wm_get_auto_rd_done(struct wm_softc *);
static void wm_lan_init_done(struct wm_softc *);
static void wm_get_cfg_done(struct wm_softc *);
+static void wm_initialize_hardware_bits(struct wm_softc *);
static void wm_reset(struct wm_softc *);
static int wm_add_rxbuf(struct wm_softc *, int);
static void wm_rxdrain(struct wm_softc *);
@@ -3230,6 +3231,200 @@
}
}
+/* Init hardware bits */
+void
+wm_initialize_hardware_bits(struct wm_softc *sc)
+{
+ uint32_t tarc0, tarc1, reg;
+
+ /* For 82571 variant, 80003 and ICHs */
+ if (((sc->sc_type >= WM_T_82571) && (sc->sc_type <= WM_T_82583))
+ || (sc->sc_type >= WM_T_80003)) {
+
+ /* Transmit Descriptor Control 0 */
+ reg = CSR_READ(sc, WMREG_TXDCTL(0));
+ reg |= TXDCTL_COUNT_DESC;
+ CSR_WRITE(sc, WMREG_TXDCTL(0), reg);
+
+ /* Transmit Descriptor Control 1 */
+ reg = CSR_READ(sc, WMREG_TXDCTL(1));
+ reg |= TXDCTL_COUNT_DESC;
+ CSR_WRITE(sc, WMREG_TXDCTL(1), reg);
+
+ /* TARC0 */
+ tarc0 = CSR_READ(sc, WMREG_TARC0);
+ switch (sc->sc_type) {
+ case WM_T_82571:
+ case WM_T_82572:
+ case WM_T_82573:
+ case WM_T_82574:
+ case WM_T_82583:
+ case WM_T_80003:
+ /* Clear bits 30..27 */
+ tarc0 &= ~__BITS(30, 27);
+ break;
+ default:
+ break;
+ }
+
+ switch (sc->sc_type) {
+ case WM_T_82571:
+ case WM_T_82572:
+ tarc0 |= __BITS(26, 23); /* TARC0 bits 23-26 */
+
+ tarc1 = CSR_READ(sc, WMREG_TARC1);
+ tarc1 &= ~__BITS(30, 29); /* Clear bits 30 and 29 */
+ tarc1 |= __BITS(26, 24); /* TARC1 bits 26-24 */
+ /* 8257[12] Errata No.7 */
+ tarc1 |= __BIT(22); /* TARC1 bits 22 */
+
+ /* TARC1 bit 28 */
+ if ((CSR_READ(sc, WMREG_TCTL) & TCTL_MULR) != 0)
+ tarc1 &= ~__BIT(28);
+ else
+ tarc1 |= __BIT(28);
+ CSR_WRITE(sc, WMREG_TARC1, tarc1);
+
+ /*
+ * 8257[12] Errata No.13
+ * Disable Dyamic Clock Gating.
+ */
+ reg = CSR_READ(sc, WMREG_CTRL_EXT);
+ reg &= ~CTRL_EXT_DMA_DYN_CLK;
+ CSR_WRITE(sc, WMREG_CTRL_EXT, reg);
+ break;
+ case WM_T_82573:
+ case WM_T_82574:
+ case WM_T_82583:
+ if ((sc->sc_type == WM_T_82574)
+ || (sc->sc_type == WM_T_82583))
+ tarc0 |= __BIT(26); /* TARC0 bit 26 */
+
+ /* Extended Device Control */
+ reg = CSR_READ(sc, WMREG_CTRL_EXT);
+ reg &= ~__BIT(23); /* Clear bit 23 */
+ reg |= __BIT(22); /* Set bit 22 */
+ CSR_WRITE(sc, WMREG_CTRL_EXT, reg);
+
+ /* Device Control */
+ sc->sc_ctrl &= ~__BIT(29); /* Clear bit 29 */
+ CSR_WRITE(sc, WMREG_CTRL, sc->sc_ctrl);
+
+ /* PCIe Control Register */
+ if ((sc->sc_type == WM_T_82574)
+ || (sc->sc_type == WM_T_82583)) {
+ /*
+ * Document says this bit must be set for
+ * proper operation.
+ */
+ reg = CSR_READ(sc, WMREG_GCR);
+ reg |= __BIT(22);
+ CSR_WRITE(sc, WMREG_GCR, reg);
+
+ /*
+ * Apply workaround for hardware errata
+ * documented in errata docs Fixes issue where
+ * some error prone or unreliable PCIe
+ * completions are occurring, particularly
+ * with ASPM enabled. Without fix, issue can
+ * cause Tx timeouts.
+ */
+ reg = CSR_READ(sc, WMREG_GCR2);
+ reg |= __BIT(0);
+ CSR_WRITE(sc, WMREG_GCR2, reg);
+ }
+ break;
+ case WM_T_80003:
+ /* TARC0 */
+ if ((sc->sc_mediatype == WM_MEDIATYPE_FIBER)
+ || (sc->sc_mediatype == WM_MEDIATYPE_SERDES))
+ tarc0 &= ~__BIT(20); /* Clear bits 20 */
+
+ /* TARC1 bit 28 */
+ tarc1 = CSR_READ(sc, WMREG_TARC1);
+ if ((CSR_READ(sc, WMREG_TCTL) & TCTL_MULR) != 0)
+ tarc1 &= ~__BIT(28);
+ else
+ tarc1 |= __BIT(28);
+ CSR_WRITE(sc, WMREG_TARC1, tarc1);
+ break;
+ case WM_T_ICH8:
+ case WM_T_ICH9:
+ case WM_T_ICH10:
+ case WM_T_PCH:
+ case WM_T_PCH2:
+ case WM_T_PCH_LPT:
+ /* TARC 0 */
+ if (sc->sc_type == WM_T_ICH8) {
+ /* Set TARC0 bits 29 and 28 */
+ tarc0 |= __BITS(29, 28);
+ }
+ /* Set TARC0 bits 23,24,26,27 */
+ tarc0 |= __BITS(27, 26) | __BITS(24, 23);
+
+ /* CTRL_EXT */
+ reg = CSR_READ(sc, WMREG_CTRL_EXT);
+ reg |= __BIT(22); /* Set bit 22 */
+ /*
+ * Enable PHY low-power state when MAC is at D3
+ * w/o WoL
+ */
+ if (sc->sc_type >= WM_T_PCH)
+ reg |= CTRL_EXT_PHYPDEN;
+ CSR_WRITE(sc, WMREG_CTRL_EXT, reg);
+
+ /* TARC1 */
+ tarc1 = CSR_READ(sc, WMREG_TARC1);
+ /* bit 28 */
+ if ((CSR_READ(sc, WMREG_TCTL) & TCTL_MULR) != 0)
+ tarc1 &= ~__BIT(28);
+ else
+ tarc1 |= __BIT(28);
+ tarc1 |= __BIT(24) | __BIT(26) | __BIT(30);
+ CSR_WRITE(sc, WMREG_TARC1, tarc1);
+
+ /* Device Status */
+ if (sc->sc_type == WM_T_ICH8) {
+ reg = CSR_READ(sc, WMREG_STATUS);
+ reg &= ~__BIT(31);
+ CSR_WRITE(sc, WMREG_STATUS, reg);
+
+ }
+
+ /*
+ * Work-around descriptor data corruption issue during
+ * NFS v2 UDP traffic, just disable the NFS filtering
+ * capability.
+ */
+ reg = CSR_READ(sc, WMREG_RFCTL);
+ reg |= WMREG_RFCTL_NFSWDIS | WMREG_RFCTL_NFSRDIS;
+ CSR_WRITE(sc, WMREG_RFCTL, reg);
+ break;
+ default:
+ break;
+ }
+ CSR_WRITE(sc, WMREG_TARC0, tarc0);
+
+ /*
+ * 8257[12] Errata No.52 and some others.
+ * Avoid RSS Hash Value bug.
+ */
+ switch (sc->sc_type) {
+ case WM_T_82571:
+ case WM_T_82572:
+ case WM_T_82573:
+ case WM_T_80003:
+ case WM_T_ICH8:
+ reg = CSR_READ(sc, WMREG_RFCTL);
+ reg |= WMREG_RFCTL_NEWIPV6EXDIS |WMREG_RFCTL_IPV6EXDIS;
+ CSR_WRITE(sc, WMREG_RFCTL, reg);
+ break;
+ default:
+ break;
+ }
+ }
+}
+
/*
* wm_reset:
*
@@ -3284,6 +3479,7 @@
sc->sc_pba = PBA_20K;
break;
case WM_T_ICH8:
+ /* Workaround for a bit corruption issue in FIFO memory */
sc->sc_pba = PBA_8K;
CSR_WRITE(sc, WMREG_PBS, PBA_16K);
break;
@@ -3747,16 +3943,13 @@
break;
}
+ /* Init hardware bits */
+ wm_initialize_hardware_bits(sc);
+
/* Reset the PHY. */
if (sc->sc_flags & WM_F_HAS_MII)
wm_gmii_reset(sc);
- reg = CSR_READ(sc, WMREG_CTRL_EXT);
- /* Enable PHY low-power state when MAC is at D3 w/o WoL */
- if ((sc->sc_type == WM_T_PCH) || (sc->sc_type == WM_T_PCH2)
- || (sc->sc_type == WM_T_PCH_LPT))
- CSR_WRITE(sc, WMREG_CTRL_EXT, reg | CTRL_EXT_PHYPDEN);
-
/* Initialize the transmit descriptor ring. */
memset(sc->sc_txdescs, 0, WM_TXDESCSIZE(sc));
WM_CDTXSYNC(sc, 0, WM_NTXDESC(sc),
@@ -3784,12 +3977,12 @@
* Don't write TDT before TCTL.EN is set.
* See the document.
*/
- CSR_WRITE(sc, WMREG_TXDCTL, TXDCTL_QUEUE_ENABLE
+ CSR_WRITE(sc, WMREG_TXDCTL(0), TXDCTL_QUEUE_ENABLE
| TXDCTL_PTHRESH(0) | TXDCTL_HTHRESH(0)
| TXDCTL_WTHRESH(0));
else {
CSR_WRITE(sc, WMREG_TDT, 0);
- CSR_WRITE(sc, WMREG_TXDCTL, TXDCTL_PTHRESH(0) |
+ CSR_WRITE(sc, WMREG_TXDCTL(0), TXDCTL_PTHRESH(0) |
TXDCTL_HTHRESH(0) | TXDCTL_WTHRESH(0));
CSR_WRITE(sc, WMREG_RXDCTL, RXDCTL_PTHRESH(0) |
RXDCTL_HTHRESH(0) | RXDCTL_WTHRESH(1));
@@ -9440,7 +9633,7 @@
{
/*
* remark: this is untested code - we have no board without EEPROM
- * same setup as mentioned int the freeBSD driver for the i82575
+ * same setup as mentioned int the FreeBSD driver for the i82575
*/
/* SerDes configuration via SERDESCTRL */
diff -r f8755ecf34db -r 2ebde7da7166 sys/dev/pci/if_wmreg.h
--- a/sys/dev/pci/if_wmreg.h Sun Feb 15 21:28:17 2015 +0000
+++ b/sys/dev/pci/if_wmreg.h Sun Feb 15 21:32:33 2015 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: if_wmreg.h,v 1.65 2014/10/24 17:58:09 msaitoh Exp $ */
+/* $NetBSD: if_wmreg.h,v 1.66 2015/02/15 21:32:33 msaitoh Exp $ */
/*
* Copyright (c) 2001 Wasabi Systems, Inc.
@@ -315,6 +315,7 @@
#define CTRL_EXT_SPD_BYPS (1U << 15) /* speed select bypass */
#define CTRL_EXT_IPS1 (1U << 16) /* invert power state bit 1 */
#define CTRL_EXT_RO_DIS (1U << 17) /* relaxed ordering disabled */
+#define CTRL_EXT_DMA_DYN_CLK (1U << 19) /* DMA Dymamic Gating Enable */
#define CTRL_EXT_LINK_MODE_MASK 0x00C00000
#define CTRL_EXT_LINK_MODE_GMII 0x00000000
#define CTRL_EXT_LINK_MODE_KMRN 0x00000000
@@ -756,11 +757,14 @@
#define WMREG_TDFTS 0x3428 /* Transmit Data FIFO Tail Saved */
#define WMREG_TDFPC 0x3430 /* Transmit Data FIFO Packet Count */
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