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Merge branch 'dsa-b53-58xx-fixes'

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Florian Fainelli says:

====================
net: dsa: b53: BCM58xx devices fixes

This patch series contains fixes for the 58xx devices (Broadcom Northstar
Plus), which were identified thanks to the help of Eric Anholt.
====================

Tested-by: Eric Anholt <eric@anholt.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2017-04-24 18:28:57 -04:00
commit 38a98bceaf
2 changed files with 40 additions and 2 deletions
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37
drivers/net/dsa/b53/b53_common.c
View File

@ -326,6 +326,7 @@ static void b53_get_vlan_entry(struct b53_device *dev, u16 vid,
static void b53_set_forwarding(struct b53_device *dev, int enable)
{
struct dsa_switch *ds = dev->ds;
u8 mgmt;
b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt);
@ -336,6 +337,15 @@ static void b53_set_forwarding(struct b53_device *dev, int enable)
mgmt &= ~SM_SW_FWD_EN;
b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, mgmt);
/* Include IMP port in dumb forwarding mode when no tagging protocol is
* set
*/
if (ds->ops->get_tag_protocol(ds) == DSA_TAG_PROTO_NONE) {
b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_CTRL, &mgmt);
mgmt |= B53_MII_DUMB_FWDG_EN;
b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_CTRL, mgmt);
}
}
static void b53_enable_vlan(struct b53_device *dev, bool enable)
@ -598,7 +608,8 @@ static void b53_switch_reset_gpio(struct b53_device *dev)
static int b53_switch_reset(struct b53_device *dev)
{
u8 mgmt;
unsigned int timeout = 1000;
u8 mgmt, reg;
b53_switch_reset_gpio(dev);
@ -607,6 +618,28 @@ static int b53_switch_reset(struct b53_device *dev)
b53_write8(dev, B53_CTRL_PAGE, B53_SOFTRESET, 0x00);
}
/* This is specific to 58xx devices here, do not use is58xx() which
* covers the larger Starfigther 2 family, including 7445/7278 which
* still use this driver as a library and need to perform the reset
* earlier.
*/
if (dev->chip_id == BCM58XX_DEVICE_ID) {
b53_read8(dev, B53_CTRL_PAGE, B53_SOFTRESET, &reg);
reg |= SW_RST | EN_SW_RST | EN_CH_RST;
b53_write8(dev, B53_CTRL_PAGE, B53_SOFTRESET, reg);
do {
b53_read8(dev, B53_CTRL_PAGE, B53_SOFTRESET, &reg);
if (!(reg & SW_RST))
break;
usleep_range(1000, 2000);
} while (timeout-- > 0);
if (timeout == 0)
return -ETIMEDOUT;
}
b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, &mgmt);
if (!(mgmt & SM_SW_FWD_EN)) {
@ -1731,7 +1764,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
.vlans = 4096,
.enabled_ports = 0x1ff,
.arl_entries = 4,
.cpu_port = B53_CPU_PORT_25,
.cpu_port = B53_CPU_PORT,
.vta_regs = B53_VTA_REGS,
.duplex_reg = B53_DUPLEX_STAT_GE,
.jumbo_pm_reg = B53_JUMBO_PORT_MASK,

5
drivers/net/dsa/b53/b53_regs.h
View File

@ -104,6 +104,10 @@
#define B53_UC_FWD_EN BIT(6)
#define B53_MC_FWD_EN BIT(7)
/* Switch control (8 bit) */
#define B53_SWITCH_CTRL 0x22
#define B53_MII_DUMB_FWDG_EN BIT(6)
/* (16 bit) */
#define B53_UC_FLOOD_MASK 0x32
#define B53_MC_FLOOD_MASK 0x34
@ -139,6 +143,7 @@
/* Software reset register (8 bit) */
#define B53_SOFTRESET 0x79
#define SW_RST BIT(7)
#define EN_CH_RST BIT(6)
#define EN_SW_RST BIT(4)
/* Fast Aging Control register (8 bit) */