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Commit aef1e0d5 authored by David S. Miller's avatar David S. Miller
Browse files

Merge branch 'dsa-b53-Support-prepended-Broadcom-tags' 



Florian Fainelli says:

====================
net: dsa: b53: Support prepended Broadcom tags

This patch series adds support for prepended 4-bytes Broadcom tags that we
already support. This type of tag will typically be used when interfaced to
a SoC like BCM58xx (NorthStar Plus) which supports a Flow Accelerator (WIP).
In that case, we need to support a slightly different tagging format.

The first patch does a bit of re-factoring and passes a port index to
the get_tag_protocol() function since at least two different drivers need
that type of information (mt7530, b53) to support tagging or not.
====================

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parents ee9d3429 11606039

drivers/net/dsa/b53/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -2,6 +2,7 @@ menuconfig B53 
	tristate "Broadcom BCM53xx managed switch support"

	depends on NET_DSA

	select NET_DSA_TAG_BRCM

	select NET_DSA_TAG_BRCM_PREPEND

	help

	  This driver adds support for Broadcom managed switch chips. It supports

	  BCM5325E, BCM5365, BCM539x, BCM53115 and BCM53125 as well as BCM63XX

drivers/net/dsa/b53/b53_common.c

+21 −21
Original line number Diff line number Diff line
@@ -541,7 +541,8 @@ EXPORT_SYMBOL(b53_disable_port); 


void b53_brcm_hdr_setup(struct dsa_switch *ds, int port)

{

	bool tag_en = !!(ds->ops->get_tag_protocol(ds) == DSA_TAG_PROTO_BRCM);

	bool tag_en = !(ds->ops->get_tag_protocol(ds, port) ==

			 DSA_TAG_PROTO_NONE);

	struct b53_device *dev = ds->priv;

	u8 hdr_ctl, val;

	u16 reg;
@@ -1478,40 +1479,39 @@ void b53_br_fast_age(struct dsa_switch *ds, int port) 
}

EXPORT_SYMBOL(b53_br_fast_age);



static bool b53_can_enable_brcm_tags(struct dsa_switch *ds)

static bool b53_can_enable_brcm_tags(struct dsa_switch *ds, int port)

{

	unsigned int brcm_tag_mask;

	unsigned int i;



	/* Broadcom switches will accept enabling Broadcom tags on the

	 * following ports: 5, 7 and 8, any other port is not supported

	 */

	brcm_tag_mask = BIT(B53_CPU_PORT_25) | BIT(7) | BIT(B53_CPU_PORT);



	for (i = 0; i < ds->num_ports; i++) {

		if (dsa_is_cpu_port(ds, i)) {

			if (!(BIT(i) & brcm_tag_mask)) {

				dev_warn(ds->dev,

					 "Port %d is not Broadcom tag capable\n",

					 i);

				return false;

			}

		}

	switch (port) {

	case B53_CPU_PORT_25:

	case 7:

	case B53_CPU_PORT:

		return true;

	}



	return true;

	dev_warn(ds->dev, "Port %d is not Broadcom tag capable\n", port);

	return false;

}



static enum dsa_tag_protocol b53_get_tag_protocol(struct dsa_switch *ds)

static enum dsa_tag_protocol b53_get_tag_protocol(struct dsa_switch *ds,

						  int port)

{

	struct b53_device *dev = ds->priv;



	/* Older models support a different tag format that we do not

	 * support in net/dsa/tag_brcm.c yet.

	 */

	if (is5325(dev) || is5365(dev) || !b53_can_enable_brcm_tags(ds))

	if (is5325(dev) || is5365(dev) || !b53_can_enable_brcm_tags(ds, port))

		return DSA_TAG_PROTO_NONE;

	else



	/* Broadcom BCM58xx chips have a flow accelerator on Port 8

	 * which requires us to use the prepended Broadcom tag type

	 */

	if (dev->chip_id == BCM58XX_DEVICE_ID && port == B53_CPU_PORT)

		return DSA_TAG_PROTO_BRCM_PREPEND;



	return DSA_TAG_PROTO_BRCM;

}

drivers/net/dsa/bcm_sf2.c

+2 −1
Original line number Diff line number Diff line
@@ -35,7 +35,8 @@ 
#include "b53/b53_priv.h"

#include "b53/b53_regs.h"



static enum dsa_tag_protocol bcm_sf2_sw_get_tag_protocol(struct dsa_switch *ds)

static enum dsa_tag_protocol bcm_sf2_sw_get_tag_protocol(struct dsa_switch *ds,

							 int port)

{

	return DSA_TAG_PROTO_BRCM;

}

drivers/net/dsa/dsa_loop.c

+2 −1
Original line number Diff line number Diff line
@@ -64,7 +64,8 @@ struct dsa_loop_priv { 


static struct phy_device *phydevs[PHY_MAX_ADDR];



static enum dsa_tag_protocol dsa_loop_get_protocol(struct dsa_switch *ds)

static enum dsa_tag_protocol dsa_loop_get_protocol(struct dsa_switch *ds,

						   int port)

{

	dev_dbg(ds->dev, "%s\n", __func__);

drivers/net/dsa/lan9303-core.c

+2 −1
Original line number Diff line number Diff line
@@ -894,7 +894,8 @@ static int lan9303_check_device(struct lan9303 *chip) 


/* ---------------------------- DSA -----------------------------------*/



static enum dsa_tag_protocol lan9303_get_tag_protocol(struct dsa_switch *ds)

static enum dsa_tag_protocol lan9303_get_tag_protocol(struct dsa_switch *ds,

						      int port)

{

	return DSA_TAG_PROTO_LAN9303;

}