[PATCH net-next v4 11/11] net: dsa: realtek: rtl8365mb: multiple cpu ports, non cpu extint

Luiz Angelo Daros de Luca
2022-01-05T03:16:22Z

Now CPU port is not limited to a single port. Also, extint can be used
as non-cpu ports, as long as it defines relatek,ext-int. The last cpu
port will be used as trap_port.

The CPU information was dropped from chip data as it was not used
outside setup. The only other place it was used is when it wrongly
checks for CPU port when it should check for extint.

realtek_priv->cpu_port is now only used by rtl8366rb.c

Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
---
drivers/net/dsa/realtek/rtl8365mb.c | 53 +++++++++++++++--------------
1 file changed, 27 insertions(+), 26 deletions(-)

diff --git a/drivers/net/dsa/realtek/rtl8365mb.c b/drivers/net/dsa/realtek/rtl8365mb.c
index 59e08b192c06..6a00a162b2ac 100644
--- a/drivers/net/dsa/realtek/rtl8365mb.c
+++ b/drivers/net/dsa/realtek/rtl8365mb.c
@@ -556,7 +556,6 @@ struct rtl8365mb_port {
* @chip_ver: chip silicon revision
* @port_mask: mask of all ports
* @learn_limit_max: maximum number of L2 addresses the chip can learn
- * @cpu: CPU tagging and CPU port configuration for this chip
* @mib_lock: prevent concurrent reads of MIB counters
* @ports: per-port data
* @jam_table: chip-specific initialization jam table
@@ -571,7 +570,6 @@ struct rtl8365mb {
u32 chip_ver;
u32 port_mask;
u32 learn_limit_max;
- struct rtl8365mb_cpu cpu;
struct mutex mib_lock;
struct rtl8365mb_port ports[RTL8365MB_MAX_NUM_PORTS];
const struct rtl8365mb_jam_tbl_entry *jam_table;
@@ -769,17 +767,20 @@ static int rtl8365mb_ext_config_rgmii(struct realtek_priv *priv, int port,
u32 val;
int ret;

- if (port != priv->cpu_port) {
- dev_err(priv->dev, "only one EXT interface is currently supported\n");
+ mb = priv->chip_data;
+ p = &mb->ports[port];
+ ext_int = p->ext_int;
+
+ if (ext_int == RTL8365MB_NOT_EXT) {
+ dev_err(priv->dev,
+ "Port %d is not identified as extenal interface.\n",
+ port);
return -EINVAL;
}

dp = dsa_to_port(priv->ds, port);
dn = dp->dn;

- mb = priv->chip_data;
- p = &mb->ports[port];
- ext_int = p->ext_int;

/* Set the RGMII TX/RX delay
*
@@ -859,15 +860,17 @@ static int rtl8365mb_ext_config_forcemode(struct realtek_priv *priv, int port,
int val;
int ret;

- if (port != priv->cpu_port) {
- dev_err(priv->dev, "only one EXT interface is currently supported\n");
- return -EINVAL;
- }
-
mb = priv->chip_data;
p = &mb->ports[port];
ext_int = p->ext_int;

+ if (ext_int == RTL8365MB_NOT_EXT) {
+ dev_err(priv->dev,
+ "Port %d is not identified as extenal interface.\n",
+ port);
+ return -EINVAL;
+ }
+
if (link) {
/* Force the link up with the desired configuration */
r_link = 1;
@@ -1734,10 +1737,8 @@ static void rtl8365mb_irq_teardown(struct realtek_priv *priv)
}
}

-static int rtl8365mb_cpu_config(struct realtek_priv *priv)
+static int rtl8365mb_cpu_config(struct realtek_priv *priv, struct rtl8365mb_cpu *cpu)
{
- struct rtl8365mb *mb = priv->chip_data;
- struct rtl8365mb_cpu *cpu = &mb->cpu;
u32 val;
int ret;

@@ -1839,11 +1840,17 @@ static int rtl8365mb_setup(struct dsa_switch *ds)
dev_info(priv->dev, "no interrupt support\n");

/* Configure CPU tagging */
+ cpu.mask = 0;
dsa_switch_for_each_cpu_port(cpu_dp, priv->ds) {
- priv->cpu_port = cpu_dp->index;
- mb->cpu.mask = BIT(priv->cpu_port);
- mb->cpu.trap_port = priv->cpu_port;
- ret = rtl8365mb_cpu_config(priv);
+ cpu.enable = 1;
+ cpu.insert = RTL8365MB_CPU_INSERT_TO_ALL;
+ cpu.position = RTL8365MB_CPU_POS_AFTER_SA;
+ cpu.rx_length = RTL8365MB_CPU_RXLEN_64BYTES;
+ cpu.format = RTL8365MB_CPU_FORMAT_8BYTES;
+ cpu.trap_port = cpu_dp->index;
+ cpu.mask |= BIT(cpu_dp->index);
+
+ ret = rtl8365mb_cpu_config(priv, &cpu);
if (ret)
goto out_teardown_irq;

@@ -1862,7 +1869,7 @@ static int rtl8365mb_setup(struct dsa_switch *ds)
dn = dsa_to_port(priv->ds, i)->dn;

/* Forward only to the CPU */
- ret = rtl8365mb_port_set_isolation(priv, i, BIT(priv->cpu_port));
+ ret = rtl8365mb_port_set_isolation(priv, i, cpu.mask);
if (ret)
goto out_teardown_irq;

@@ -2003,12 +2010,6 @@ static int rtl8365mb_detect(struct realtek_priv *priv)
mb->jam_table = rtl8365mb_init_jam_8365mb_vc;
mb->jam_size = ARRAY_SIZE(rtl8365mb_init_jam_8365mb_vc);

- mb->cpu.enable = 1;
- mb->cpu.insert = RTL8365MB_CPU_INSERT_TO_ALL;
- mb->cpu.position = RTL8365MB_CPU_POS_AFTER_SA;
- mb->cpu.rx_length = RTL8365MB_CPU_RXLEN_64BYTES;
- mb->cpu.format = RTL8365MB_CPU_FORMAT_8BYTES;
-
break;
default:
dev_err(priv->dev,
--
2.34.0