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Commit 63f8428b authored by Rafał Miłecki's avatar Rafał Miłecki Committed by David S. Miller
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net: dsa: b53: Fix IMP port setup on BCM5301x 

Broadcom's b53 switches have one IMP (Inband Management Port) that needs
to be programmed using its own designed register. IMP port may be
different than CPU port - especially on devices with multiple CPU ports.

For that reason it's required to explicitly note IMP port index and
check for it when choosing a register to use.

This commit fixes BCM5301x support. Those switches use CPU port 5 while
their IMP port is 8. Before this patch b53 was trying to program port 5
with B53_PORT_OVERRIDE_CTRL instead of B53_GMII_PORT_OVERRIDE_CTRL(5).

It may be possible to also replace "cpu_port" usages with
dsa_is_cpu_port() but that is out of the scope of thix BCM5301x fix.

Fixes: 967dd82f ("net: dsa: b53: Add support for Broadcom RoboSwitch")
Signed-off-by: default avatarRafał Miłecki <rafal@milecki.pl>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 8a0ed250
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Inline Side-by-side
Showing with 26 additions and 3 deletions
drivers/net/dsa/b53/b53_common.c
View file @ 63f8428b
......@@ -1144,7 +1144,7 @@ static void b53_force_link(struct b53_device *dev, int port, int link)
u8 reg, val, off;
/* Override the port settings */
if (port == dev->cpu_port) {
if (port == dev->imp_port) {
off = B53_PORT_OVERRIDE_CTRL;
val = PORT_OVERRIDE_EN;
} else {
......@@ -1168,7 +1168,7 @@ static void b53_force_port_config(struct b53_device *dev, int port,
u8 reg, val, off;
/* Override the port settings */
if (port == dev->cpu_port) {
if (port == dev->imp_port) {
off = B53_PORT_OVERRIDE_CTRL;
val = PORT_OVERRIDE_EN;
} else {
......@@ -1236,7 +1236,7 @@ static void b53_adjust_link(struct dsa_switch *ds, int port,
b53_force_link(dev, port, phydev->link);
if (is531x5(dev) && phy_interface_is_rgmii(phydev)) {
if (port == 8)
if (port == dev->imp_port)
off = B53_RGMII_CTRL_IMP;
else
off = B53_RGMII_CTRL_P(port);
......@@ -2280,6 +2280,7 @@ struct b53_chip_data {
const char *dev_name;
u16 vlans;
u16 enabled_ports;
u8 imp_port;
u8 cpu_port;
u8 vta_regs[3];
u8 arl_bins;
......@@ -2304,6 +2305,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
.enabled_ports = 0x1f,
.arl_bins = 2,
.arl_buckets = 1024,
.imp_port = 5,
.cpu_port = B53_CPU_PORT_25,
.duplex_reg = B53_DUPLEX_STAT_FE,
},
......@@ -2314,6 +2316,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
.enabled_ports = 0x1f,
.arl_bins = 2,
.arl_buckets = 1024,
.imp_port = 5,
.cpu_port = B53_CPU_PORT_25,
.duplex_reg = B53_DUPLEX_STAT_FE,
},
......@@ -2324,6 +2327,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
.enabled_ports = 0x1f,
.arl_bins = 4,
.arl_buckets = 1024,
.imp_port = 8,
.cpu_port = B53_CPU_PORT,
.vta_regs = B53_VTA_REGS,
.duplex_reg = B53_DUPLEX_STAT_GE,
......@@ -2337,6 +2341,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
.enabled_ports = 0x1f,
.arl_bins = 4,
.arl_buckets = 1024,
.imp_port = 8,
.cpu_port = B53_CPU_PORT,
.vta_regs = B53_VTA_REGS,
.duplex_reg = B53_DUPLEX_STAT_GE,
......@@ -2350,6 +2355,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
.enabled_ports = 0x1f,
.arl_bins = 4,
.arl_buckets = 1024,
.imp_port = 8,
.cpu_port = B53_CPU_PORT,
.vta_regs = B53_VTA_REGS_9798,
.duplex_reg = B53_DUPLEX_STAT_GE,
......@@ -2363,6 +2369,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
.enabled_ports = 0x7f,
.arl_bins = 4,
.arl_buckets = 1024,
.imp_port = 8,
.cpu_port = B53_CPU_PORT,
.vta_regs = B53_VTA_REGS_9798,
.duplex_reg = B53_DUPLEX_STAT_GE,
......@@ -2377,6 +2384,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
.arl_bins = 4,
.arl_buckets = 1024,
.vta_regs = B53_VTA_REGS,
.imp_port = 8,
.cpu_port = B53_CPU_PORT,
.duplex_reg = B53_DUPLEX_STAT_GE,
.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
......@@ -2389,6 +2397,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
.enabled_ports = 0xff,
.arl_bins = 4,
.arl_buckets = 1024,
.imp_port = 8,
.cpu_port = B53_CPU_PORT,
.vta_regs = B53_VTA_REGS,
.duplex_reg = B53_DUPLEX_STAT_GE,
......@@ -2402,6 +2411,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
.enabled_ports = 0x1ff,
.arl_bins = 4,
.arl_buckets = 1024,
.imp_port = 8,
.cpu_port = B53_CPU_PORT,
.vta_regs = B53_VTA_REGS,
.duplex_reg = B53_DUPLEX_STAT_GE,
......@@ -2415,6 +2425,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
.enabled_ports = 0, /* pdata must provide them */
.arl_bins = 4,
.arl_buckets = 1024,
.imp_port = 8,
.cpu_port = B53_CPU_PORT,
.vta_regs = B53_VTA_REGS_63XX,
.duplex_reg = B53_DUPLEX_STAT_63XX,
......@@ -2428,6 +2439,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
.enabled_ports = 0x1f,
.arl_bins = 4,
.arl_buckets = 1024,
.imp_port = 8,
.cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
.vta_regs = B53_VTA_REGS,
.duplex_reg = B53_DUPLEX_STAT_GE,
......@@ -2441,6 +2453,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
.enabled_ports = 0x1bf,
.arl_bins = 4,
.arl_buckets = 1024,
.imp_port = 8,
.cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
.vta_regs = B53_VTA_REGS,
.duplex_reg = B53_DUPLEX_STAT_GE,
......@@ -2454,6 +2467,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
.enabled_ports = 0x1bf,
.arl_bins = 4,
.arl_buckets = 1024,
.imp_port = 8,
.cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
.vta_regs = B53_VTA_REGS,
.duplex_reg = B53_DUPLEX_STAT_GE,
......@@ -2467,6 +2481,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
.enabled_ports = 0x1f,
.arl_bins = 4,
.arl_buckets = 1024,
.imp_port = 8,
.cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
.vta_regs = B53_VTA_REGS,
.duplex_reg = B53_DUPLEX_STAT_GE,
......@@ -2480,6 +2495,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
.enabled_ports = 0x1f,
.arl_bins = 4,
.arl_buckets = 1024,
.imp_port = 8,
.cpu_port = B53_CPU_PORT_25, /* TODO: auto detect */
.vta_regs = B53_VTA_REGS,
.duplex_reg = B53_DUPLEX_STAT_GE,
......@@ -2493,6 +2509,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
.enabled_ports = 0x1ff,
.arl_bins = 4,
.arl_buckets = 1024,
.imp_port = 8,
.cpu_port = B53_CPU_PORT,
.vta_regs = B53_VTA_REGS,
.duplex_reg = B53_DUPLEX_STAT_GE,
......@@ -2506,6 +2523,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
.enabled_ports = 0x103,
.arl_bins = 4,
.arl_buckets = 1024,
.imp_port = 8,
.cpu_port = B53_CPU_PORT,
.vta_regs = B53_VTA_REGS,
.duplex_reg = B53_DUPLEX_STAT_GE,
......@@ -2520,6 +2538,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
.enabled_ports = 0x1bf,
.arl_bins = 4,
.arl_buckets = 256,
.imp_port = 8,
.cpu_port = 8, /* TODO: ports 4, 5, 8 */
.vta_regs = B53_VTA_REGS,
.duplex_reg = B53_DUPLEX_STAT_GE,
......@@ -2533,6 +2552,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
.enabled_ports = 0x1ff,
.arl_bins = 4,
.arl_buckets = 1024,
.imp_port = 8,
.cpu_port = B53_CPU_PORT,
.vta_regs = B53_VTA_REGS,
.duplex_reg = B53_DUPLEX_STAT_GE,
......@@ -2546,6 +2566,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
.enabled_ports = 0x1ff,
.arl_bins = 4,
.arl_buckets = 256,
.imp_port = 8,
.cpu_port = B53_CPU_PORT,
.vta_regs = B53_VTA_REGS,
.duplex_reg = B53_DUPLEX_STAT_GE,
......@@ -2571,6 +2592,7 @@ static int b53_switch_init(struct b53_device *dev)
dev->vta_regs[1] = chip->vta_regs[1];
dev->vta_regs[2] = chip->vta_regs[2];
dev->jumbo_pm_reg = chip->jumbo_pm_reg;
dev->imp_port = chip->imp_port;
dev->cpu_port = chip->cpu_port;
dev->num_vlans = chip->vlans;
dev->num_arl_bins = chip->arl_bins;
......
drivers/net/dsa/b53/b53_priv.h
View file @ 63f8428b
......@@ -123,6 +123,7 @@ struct b53_device {
/* used ports mask */
u16 enabled_ports;
unsigned int imp_port;
unsigned int cpu_port;
/* connect specific data */
......
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