Date: Sun, 10 Jun 2007 22:47:17 +0200 (CEST) From: =?iso-8859-1?Q?Bj=F6rn_K=F6nig?= <bkoenig@alpha-tierchen.de> To: arm@freebsd.org Subject: Re: if_ate handles the bytes of the MAC address in a "wrong" order Message-ID: <62668.2001:6f8:101e:0:20e:cff:fe6d:6adb.1181508437.squirrel@webmail.alpha-tierchen.de> In-Reply-To: <20070610105550.GQ16463@cicely12.cicely.de> References: <59832.2001:6f8:101e:0:20e:cff:fe6d:6adb.1181391583.squirrel@webmail.alpha-tierchen.de> <20070609123941.GJ16463@cicely12.cicely.de> <51831.2001:6f8:101e:0:20e:cff:fe6d:6adb.1181397815.squirrel@webmail.alpha-tierchen.de> <20070609.094708.-2034663768.imp@bsdimp.com> <1161.89.247.105.240.1181457870.squirrel@webmail.alpha-tierchen.de> <20070610105550.GQ16463@cicely12.cicely.de>
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Ok, this patch additionally adds the kernel option ATE_REVERSE_MAC that
allows you to build a kernel that works with a version of the loader that
uses the previous byte order.
Björn
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--- src/sys/arm/at91/if_ate.c Sat Jun 9 15:50:50 2007
+++ src/sys/arm/at91/if_ate.c Sun Jun 10 22:06:49 2007
@@ -35,6 +35,10 @@
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/sys/arm/at91/if_ate.c,v 1.19 2007/02/23 12:18:27 piso Exp $");
+#ifdef HAVE_KERNEL_OPTION_HEADERS
+#include "opt_ate.h"
+#endif
+
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
@@ -170,7 +174,7 @@
struct sysctl_ctx_list *sctx;
struct sysctl_oid *soid;
int err;
- u_char eaddr[6];
+ u_char eaddr[ETHER_ADDR_LEN];
sc->dev = dev;
err = ate_activate(dev);
@@ -587,24 +591,43 @@
static int
ate_get_mac(struct ate_softc *sc, u_char *eaddr)
{
+ bus_size_t sa_low_reg[] = { ETH_SA1L, ETH_SA2L, ETH_SA3L, ETH_SA4L };
+ bus_size_t sa_high_reg[] = { ETH_SA1H, ETH_SA2H, ETH_SA3H, ETH_SA4H };
uint32_t low, high;
+ int i;
/*
* The boot loader setup the MAC with an address, if one is set in
- * the loader. The TSC loader will also set the MAC address in a
- * similar way. Grab the MAC address from the SA1[HL] registers.
+ * the loader. Grab one MAC address from the SA[1-4][HL] registers.
+
*/
- low = RD4(sc, ETH_SA1L);
- high = RD4(sc, ETH_SA1H);
- if ((low | (high & 0xffff)) == 0)
- return (ENXIO);
- eaddr[0] = (high >> 8) & 0xff;
- eaddr[1] = high & 0xff;
- eaddr[2] = (low >> 24) & 0xff;
- eaddr[3] = (low >> 16) & 0xff;
- eaddr[4] = (low >> 8) & 0xff;
- eaddr[5] = low & 0xff;
- return (0);
+ for (i = 0; i < 4; i++)
+ {
+ low = RD4(sc, sa_low_reg[i]);
+ high = RD4(sc, sa_high_reg[i]);
+ if ((low | (high & 0xffff)) != 0)
+ {
+#ifdef ATE_REVERSE_MAC
+ eaddr[0] = (high >> 8) & 0xff;
+ eaddr[1] = high & 0xff;
+ eaddr[2] = (low >> 24) & 0xff;
+ eaddr[3] = (low >> 16) & 0xff;
+ eaddr[4] = (low >> 8) & 0xff;
+ eaddr[5] = low & 0xff;
+#else
+
+ eaddr[0] = low & 0xff;
+ eaddr[1] = (low >> 8) & 0xff;
+ eaddr[2] = (low >> 16) & 0xff;
+ eaddr[3] = (low >> 24) & 0xff;
+ eaddr[4] = high & 0xff;
+ eaddr[5] = (high >> 8) & 0xff;
+#endif
+ return (0);
+ }
+ }
+
+ return (ENXIO);
}
static void
--- src/sys/boot/arm/at91/libat91/emac_init.c Wed Dec 20 19:26:37 2006
+++ src/sys/boot/arm/at91/libat91/emac_init.c Sat Jun 9 15:55:23 2007
@@ -79,8 +79,8 @@
pPMC->PMC_PCER = ((unsigned) 1 << AT91C_ID_EMAC);
memcpy(localMACAddr, mac, 6);
- localMAClow = (mac[2] << 24) | (mac[3] << 16) | (mac[4] << 8) | mac[5];
- localMAChigh = (mac[0] << 8) | mac[1];
+ localMAClow = (mac[3] << 24) | (mac[2] << 16) | (mac[1] << 8) | mac[0];
+ localMAChigh = (mac[5] << 8) | mac[4];
localMACSet = 1;
AT91C_BASE_PMC->PMC_PCER = 1u << AT91C_ID_EMAC;
--- src/sys/conf/options.arm Mon Feb 19 02:03:07 2007
+++ src/sys/conf/options.arm Sun Jun 10 22:01:59 2007
@@ -24,3 +24,4 @@
AT91_BWCT opt_at91.h
AT91_TSC opt_at91.h
AT91_KWIKBYTE opt_at91.h
+ATE_REVERSE_MAC opt_ate.h
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