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author | 2017-04-24 18:28:57 -0400 | |
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committer | 2017-04-24 18:29:11 -0400 | |
commit | 38a98bceaf5f786b931d16826fbb46e73280849b (patch) | |
tree | 6788e03deff115ed13eae2ae6f01253e36168580 /drivers/net | |
parent | Merge tag 'mlx5-fixes-2017-04-22' of git://git.kernel.org/pub/scm/linux/kerne... (diff) | |
parent | net: dsa: b53: Fix CPU port for 58xx devices (diff) | |
download | linux-38a98bceaf5f786b931d16826fbb46e73280849b.tar.gz linux-38a98bceaf5f786b931d16826fbb46e73280849b.tar.bz2 linux-38a98bceaf5f786b931d16826fbb46e73280849b.zip |
Merge branch 'dsa-b53-58xx-fixes'
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>
Diffstat (limited to 'drivers/net')
-rw-r--r-- | drivers/net/dsa/b53/b53_common.c | 37 | ||||
-rw-r--r-- | drivers/net/dsa/b53/b53_regs.h | 5 |
2 files changed, 40 insertions, 2 deletions
diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c index 8cf4801994e8..fa0eece21eef 100644 --- a/drivers/net/dsa/b53/b53_common.c +++ b/drivers/net/dsa/b53/b53_common.c @@ -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 |= 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, ®); + 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, diff --git a/drivers/net/dsa/b53/b53_regs.h b/drivers/net/dsa/b53/b53_regs.h index 9fd24c418fa4..e5c86d44667a 100644 --- a/drivers/net/dsa/b53/b53_regs.h +++ b/drivers/net/dsa/b53/b53_regs.h @@ -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) */ |