net: dsa: b53: Provide number of ARL buckets

In preparation for doing proper upper bound checking of FDB/MDB entries
being added to the ARL, provide the number of ARL buckets for each
switch chip we support. All chips have 1024 buckets, except 7278 which
has only 256.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 22 insertions, 0 deletions

diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index 41b75f41677a..aa0836ac751c 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -2186,6 +2186,7 @@ struct b53_chip_data {
 	u8 cpu_port;
 	u8 vta_regs[3];
 	u8 arl_bins;
+	u16 arl_buckets;
 	u8 duplex_reg;
 	u8 jumbo_pm_reg;
 	u8 jumbo_size_reg;
@@ -2205,6 +2206,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.vlans = 16,
 		.enabled_ports = 0x1f,
 		.arl_bins = 2,
+		.arl_buckets = 1024,
 		.cpu_port = B53_CPU_PORT_25,
 		.duplex_reg = B53_DUPLEX_STAT_FE,
 	},
@@ -2214,6 +2216,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.vlans = 256,
 		.enabled_ports = 0x1f,
 		.arl_bins = 2,
+		.arl_buckets = 1024,
 		.cpu_port = B53_CPU_PORT_25,
 		.duplex_reg = B53_DUPLEX_STAT_FE,
 	},
@@ -2223,6 +2226,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.vlans = 4096,
 		.enabled_ports = 0x1f,
 		.arl_bins = 4,
+		.arl_buckets = 1024,
 		.cpu_port = B53_CPU_PORT,
 		.vta_regs = B53_VTA_REGS,
 		.duplex_reg = B53_DUPLEX_STAT_GE,
@@ -2235,6 +2239,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.vlans = 4096,
 		.enabled_ports = 0x1f,
 		.arl_bins = 4,
+		.arl_buckets = 1024,
 		.cpu_port = B53_CPU_PORT,
 		.vta_regs = B53_VTA_REGS,
 		.duplex_reg = B53_DUPLEX_STAT_GE,
@@ -2247,6 +2252,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.vlans = 4096,
 		.enabled_ports = 0x1f,
 		.arl_bins = 4,
+		.arl_buckets = 1024,
 		.cpu_port = B53_CPU_PORT,
 		.vta_regs = B53_VTA_REGS_9798,
 		.duplex_reg = B53_DUPLEX_STAT_GE,
@@ -2259,6 +2265,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.vlans = 4096,
 		.enabled_ports = 0x7f,
 		.arl_bins = 4,
+		.arl_buckets = 1024,
 		.cpu_port = B53_CPU_PORT,
 		.vta_regs = B53_VTA_REGS_9798,
 		.duplex_reg = B53_DUPLEX_STAT_GE,
@@ -2271,6 +2278,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.vlans = 4096,
 		.enabled_ports = 0x1f,
 		.arl_bins = 4,
+		.arl_buckets = 1024,
 		.vta_regs = B53_VTA_REGS,
 		.cpu_port = B53_CPU_PORT,
 		.duplex_reg = B53_DUPLEX_STAT_GE,
@@ -2283,6 +2291,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.vlans = 4096,
 		.enabled_ports = 0xff,
 		.arl_bins = 4,
+		.arl_buckets = 1024,
 		.cpu_port = B53_CPU_PORT,
 		.vta_regs = B53_VTA_REGS,
 		.duplex_reg = B53_DUPLEX_STAT_GE,
@@ -2295,6 +2304,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.vlans = 4096,
 		.enabled_ports = 0x1ff,
 		.arl_bins = 4,
+		.arl_buckets = 1024,
 		.cpu_port = B53_CPU_PORT,
 		.vta_regs = B53_VTA_REGS,
 		.duplex_reg = B53_DUPLEX_STAT_GE,
@@ -2307,6 +2317,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.vlans = 4096,
 		.enabled_ports = 0, /* pdata must provide them */
 		.arl_bins = 4,
+		.arl_buckets = 1024,
 		.cpu_port = B53_CPU_PORT,
 		.vta_regs = B53_VTA_REGS_63XX,
 		.duplex_reg = B53_DUPLEX_STAT_63XX,
@@ -2319,6 +2330,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.vlans = 4096,
 		.enabled_ports = 0x1f,
 		.arl_bins = 4,
+		.arl_buckets = 1024,
 		.cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
 		.vta_regs = B53_VTA_REGS,
 		.duplex_reg = B53_DUPLEX_STAT_GE,
@@ -2331,6 +2343,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.vlans = 4096,
 		.enabled_ports = 0x1bf,
 		.arl_bins = 4,
+		.arl_buckets = 1024,
 		.cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
 		.vta_regs = B53_VTA_REGS,
 		.duplex_reg = B53_DUPLEX_STAT_GE,
@@ -2343,6 +2356,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.vlans = 4096,
 		.enabled_ports = 0x1bf,
 		.arl_bins = 4,
+		.arl_buckets = 1024,
 		.cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
 		.vta_regs = B53_VTA_REGS,
 		.duplex_reg = B53_DUPLEX_STAT_GE,
@@ -2355,6 +2369,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.vlans = 4096,
 		.enabled_ports = 0x1f,
 		.arl_bins = 4,
+		.arl_buckets = 1024,
 		.cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
 		.vta_regs = B53_VTA_REGS,
 		.duplex_reg = B53_DUPLEX_STAT_GE,
@@ -2367,6 +2382,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.vlans = 4096,
 		.enabled_ports = 0x1f,
 		.arl_bins = 4,
+		.arl_buckets = 1024,
 		.cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
 		.vta_regs = B53_VTA_REGS,
 		.duplex_reg = B53_DUPLEX_STAT_GE,
@@ -2379,6 +2395,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.vlans	= 4096,
 		.enabled_ports = 0x1ff,
 		.arl_bins = 4,
+		.arl_buckets = 1024,
 		.cpu_port = B53_CPU_PORT,
 		.vta_regs = B53_VTA_REGS,
 		.duplex_reg = B53_DUPLEX_STAT_GE,
@@ -2391,6 +2408,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.vlans = 4096,
 		.enabled_ports = 0x103,
 		.arl_bins = 4,
+		.arl_buckets = 1024,
 		.cpu_port = B53_CPU_PORT,
 		.vta_regs = B53_VTA_REGS,
 		.duplex_reg = B53_DUPLEX_STAT_GE,
@@ -2403,6 +2421,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.vlans	= 4096,
 		.enabled_ports = 0x1ff,
 		.arl_bins = 4,
+		.arl_buckets = 1024,
 		.cpu_port = B53_CPU_PORT,
 		.vta_regs = B53_VTA_REGS,
 		.duplex_reg = B53_DUPLEX_STAT_GE,
@@ -2415,6 +2434,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.vlans = 4096,
 		.enabled_ports = 0x1ff,
 		.arl_bins = 4,
+		.arl_buckets = 256,
 		.cpu_port = B53_CPU_PORT,
 		.vta_regs = B53_VTA_REGS,
 		.duplex_reg = B53_DUPLEX_STAT_GE,
@@ -2443,6 +2463,7 @@ static int b53_switch_init(struct b53_device *dev)
 			dev->cpu_port = chip->cpu_port;
 			dev->num_vlans = chip->vlans;
 			dev->num_arl_bins = chip->arl_bins;
+			dev->num_arl_buckets = chip->arl_buckets;
 			break;
 		}
 	}
diff --git a/drivers/net/dsa/b53/b53_priv.h b/drivers/net/dsa/b53/b53_priv.h
index 1c5c443d571f..694e26cdfd4d 100644
--- a/drivers/net/dsa/b53/b53_priv.h
+++ b/drivers/net/dsa/b53/b53_priv.h
@@ -118,6 +118,7 @@ struct b53_device {
 	u8 jumbo_size_reg;
 	int reset_gpio;
 	u8 num_arl_bins;
+	u16 num_arl_buckets;
 	enum dsa_tag_protocol tag_protocol;
 
 	/* used ports mask */