Add support for the Broadcom BCM5901 and BCM5901 rev A2 chips.

These are 10/100 only NICs found on the IBM Thinkpad R40E and
G40. These seem to be based on the BCM5705 MAC but with a PHY
that doesn't support 1000Mbps modes.

Submitted by:	Igor Sviridov <sia@nest.org>

3 files changed, 31 insertions, 5 deletions

diff --git a/sys/dev/bge/if_bge.c b/sys/dev/bge/if_bge.c
index df389e4..928fe3c 100644
--- a/sys/dev/bge/if_bge.c
+++ b/sys/dev/bge/if_bge.c
@@ -154,6 +154,10 @@ static struct bge_type bge_devs[] = {
 		"Broadcom BCM5705M Gigabit Ethernet" },
 	{ BCOM_VENDORID, BCOM_DEVICEID_BCM5782,
 		"Broadcom BCM5782 Gigabit Ethernet" },
+	{ BCOM_VENDORID, BCOM_DEVICEID_BCM5901,
+		"Broadcom BCM5901 Fast Ethernet" },
+	{ BCOM_VENDORID, BCOM_DEVICEID_BCM5901A2,
+		"Broadcom BCM5901A2 Fast Ethernet" },
 	{ SK_VENDORID, SK_DEVICEID_ALTIMA,
 		"SysKonnect Gigabit Ethernet" },
 	{ ALTIMA_VENDORID, ALTIMA_DEVICE_AC1000,
diff --git a/sys/dev/bge/if_bgereg.h b/sys/dev/bge/if_bgereg.h
index ea09921..02446cf 100644
--- a/sys/dev/bge/if_bgereg.h
+++ b/sys/dev/bge/if_bgereg.h
@@ -1822,6 +1822,8 @@ struct bge_status_block {
 #define BCOM_DEVICEID_BCM5705M		0x165D
 #define BCOM_DEVICEID_BCM5705M_ALT	0x165E
 #define BCOM_DEVICEID_BCM5782		0x1696
+#define BCOM_DEVICEID_BCM5901		0x170D
+#define BCOM_DEVICEID_BCM5901A2		0x170E
 
 /*
  * Alteon AceNIC PCI vendor/device ID.
diff --git a/sys/dev/mii/brgphy.c b/sys/dev/mii/brgphy.c
index 9f6ed9c..ed86ca8a 100644
--- a/sys/dev/mii/brgphy.c
+++ b/sys/dev/mii/brgphy.c
@@ -58,6 +58,9 @@ __FBSDID("$FreeBSD$");
 #include <machine/bus.h>
 #include <dev/bge/if_bgereg.h>
 
+#include <pci/pcireg.h>
+#include <pci/pcivar.h>
+
 #include "miibus_if.h"
 
 static int brgphy_probe(device_t);
@@ -153,6 +156,8 @@ brgphy_attach(dev)
 	struct mii_attach_args *ma;
 	struct mii_data *mii;
 	const char *sep = "";
+	struct bge_softc *bge_sc;
+	int fast_ether_only = FALSE;
 
 	sc = device_get_softc(dev);
 	ma = device_get_ivars(dev);
@@ -186,11 +191,26 @@ brgphy_attach(dev)
 	sc->mii_capabilities &= ~BMSR_ANEG;
 	device_printf(dev, " ");
 	mii_add_media(sc);
-	ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, 0, sc->mii_inst),
-	    BRGPHY_BMCR_FDX);
-	PRINT(", 1000baseTX");
-	ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, IFM_FDX, sc->mii_inst), 0);
-	PRINT("1000baseTX-FDX");
+
+	/* The 590x chips are 10/100 only. */
+
+	bge_sc = mii->mii_ifp->if_softc;
+
+	if (strcmp(mii->mii_ifp->if_name, "bge") == 0 &&
+	    pci_get_vendor(bge_sc->bge_dev) == BCOM_VENDORID &&
+	    (pci_get_device(bge_sc->bge_dev) == BCOM_DEVICEID_BCM5901 ||
+	    pci_get_device(bge_sc->bge_dev) == BCOM_DEVICEID_BCM5901A2))
+		fast_ether_only = TRUE;
+
+	if (fast_ether_only == FALSE) {
+		ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, 0,
+		    sc->mii_inst), BRGPHY_BMCR_FDX);
+		PRINT(", 1000baseTX");
+		ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T,
+		    IFM_FDX, sc->mii_inst), 0);
+		PRINT("1000baseTX-FDX");
+	}
+
 	ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0);
 	PRINT("auto");