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Message-Id: <1308981231-2561-1-git-send-email-barry@grussling.com> Date: Fri, 24 Jun 2011 22:53:51 -0700 From: Barry Grussling <barry@...ssling.com> To: netdev@...r.kernel.org Cc: buytenh@...tstofly.org, Barry Grussling <barry@...ssling.com> Subject: [PATCH V3 1/1] DSA: Enable cascading in multi-chip 6131 configuration From: Barry Grussling <barry@...ssling.com> This patch enables the 6131 family of chips to forward DSA packets to other switch chips. This is needed if multiple DSA chips are used in a device. Without this patch the chip will drop any DSA packets not destined for it. This patch only enables the forwarding of DSA packets if multiple chips are used in the switch configuration. Signed-off-by: Barry Grussling <barry@...ssling.com> --- diff --git a/net/dsa/mv88e6131.c b/net/dsa/mv88e6131.c index 45f7411..9bd1061 100644 --- a/net/dsa/mv88e6131.c +++ b/net/dsa/mv88e6131.c @@ -118,10 +118,14 @@ static int mv88e6131_setup_global(struct dsa_switch *ds) REG_WRITE(REG_GLOBAL, 0x1a, (dsa_upstream_port(ds) * 0x1100) | 0x00f0); /* - * Disable cascade port functionality, and set the switch's + * Disable cascade port functionality unless this device + * is used in a cascade configuration, and set the switch's * DSA device number. */ - REG_WRITE(REG_GLOBAL, 0x1c, 0xe000 | (ds->index & 0x1f)); + if (ds->dst->pd->nr_chips > 1) + REG_WRITE(REG_GLOBAL, 0x1c, 0xf000 | (ds->index & 0x1f)); + else + REG_WRITE(REG_GLOBAL, 0x1c, 0xe000 | (ds->index & 0x1f)); /* * Send all frames with destination addresses matching -- 1.7.4.1 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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