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net: dsa: bcm_sf2: Add support for BCM7278 integrated switch

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Add support for the integrated switch found on BCM7278:

- core_reg_align is set to 1, to force a translation into the target
  address space which is 8 bytes aligned
- an alternate SWITCH_REG layout is provided since registers are largely
  bit/masks compatible but have different offsets
- conditional for all CORE_STS_OVERRIDE_{IMP,GMII_P} since those got
  moved way out of the traditional register space

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli
2017-01-20 12:36:30 -08:00
committed by David S. Miller
parent a78e86ed58
commit 0fe9933804
5 changed files with 68 additions and 10 deletions
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56
drivers/net/dsa/bcm_sf2.c
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@@ -64,7 +64,12 @@ static void bcm_sf2_imp_vlan_setup(struct dsa_switch *ds, int cpu_port)
static void bcm_sf2_imp_setup(struct dsa_switch *ds, int port)
{
struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
u32 reg, val;
u32 reg, val, offset;
if (priv->type == BCM7445_DEVICE_ID)
offset = CORE_STS_OVERRIDE_IMP;
else
offset = CORE_STS_OVERRIDE_IMP2;
/* Enable the port memories */
reg = core_readl(priv, CORE_MEM_PSM_VDD_CTRL);
@@ -121,9 +126,9 @@ static void bcm_sf2_imp_setup(struct dsa_switch *ds, int port)
core_writel(priv, reg, CORE_BRCM_HDR_TX_DIS);
/* Force link status for IMP port */
reg = core_readl(priv, CORE_STS_OVERRIDE_IMP);
reg = core_readl(priv, offset);
reg |= (MII_SW_OR | LINK_STS);
core_writel(priv, reg, CORE_STS_OVERRIDE_IMP);
core_writel(priv, reg, offset);
}
static void bcm_sf2_eee_enable_set(struct dsa_switch *ds, int port, bool enable)
@@ -591,7 +596,12 @@ static void bcm_sf2_sw_adjust_link(struct dsa_switch *ds, int port,
struct ethtool_eee *p = &priv->port_sts[port].eee;
u32 id_mode_dis = 0, port_mode;
const char *str = NULL;
u32 reg;
u32 reg, offset;
if (priv->type == BCM7445_DEVICE_ID)
offset = CORE_STS_OVERRIDE_GMIIP_PORT(port);
else
offset = CORE_STS_OVERRIDE_GMIIP2_PORT(port);
switch (phydev->interface) {
case PHY_INTERFACE_MODE_RGMII:
@@ -662,7 +672,7 @@ force_link:
if (phydev->duplex == DUPLEX_FULL)
reg |= DUPLX_MODE;
core_writel(priv, reg, CORE_STS_OVERRIDE_GMIIP_PORT(port));
core_writel(priv, reg, offset);
if (!phydev->is_pseudo_fixed_link)
p->eee_enabled = bcm_sf2_eee_init(ds, port, phydev);
@@ -672,9 +682,14 @@ static void bcm_sf2_sw_fixed_link_update(struct dsa_switch *ds, int port,
struct fixed_phy_status *status)
{
struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
u32 duplex, pause;
u32 duplex, pause, offset;
u32 reg;
if (priv->type == BCM7445_DEVICE_ID)
offset = CORE_STS_OVERRIDE_GMIIP_PORT(port);
else
offset = CORE_STS_OVERRIDE_GMIIP2_PORT(port);
duplex = core_readl(priv, CORE_DUPSTS);
pause = core_readl(priv, CORE_PAUSESTS);
@@ -703,13 +718,13 @@ static void bcm_sf2_sw_fixed_link_update(struct dsa_switch *ds, int port,
status->duplex = !!(duplex & (1 << port));
}
reg = core_readl(priv, CORE_STS_OVERRIDE_GMIIP_PORT(port));
reg = core_readl(priv, offset);
reg |= SW_OVERRIDE;
if (status->link)
reg |= LINK_STS;
else
reg &= ~LINK_STS;
core_writel(priv, reg, CORE_STS_OVERRIDE_GMIIP_PORT(port));
core_writel(priv, reg, offset);
if ((pause & (1 << port)) &&
(pause & (1 << (port + PAUSESTS_TX_PAUSE_SHIFT)))) {
@@ -1038,10 +1053,35 @@ static const struct bcm_sf2_of_data bcm_sf2_7445_data = {
.reg_offsets = bcm_sf2_7445_reg_offsets,
};
static const u16 bcm_sf2_7278_reg_offsets[] = {
[REG_SWITCH_CNTRL] = 0x00,
[REG_SWITCH_STATUS] = 0x04,
[REG_DIR_DATA_WRITE] = 0x08,
[REG_DIR_DATA_READ] = 0x0c,
[REG_SWITCH_REVISION] = 0x10,
[REG_PHY_REVISION] = 0x14,
[REG_SPHY_CNTRL] = 0x24,
[REG_RGMII_0_CNTRL] = 0xe0,
[REG_RGMII_1_CNTRL] = 0xec,
[REG_RGMII_2_CNTRL] = 0xf8,
[REG_LED_0_CNTRL] = 0x40,
[REG_LED_1_CNTRL] = 0x4c,
[REG_LED_2_CNTRL] = 0x58,
};
static const struct bcm_sf2_of_data bcm_sf2_7278_data = {
.type = BCM7278_DEVICE_ID,
.core_reg_align = 1,
.reg_offsets = bcm_sf2_7278_reg_offsets,
};
static const struct of_device_id bcm_sf2_of_match[] = {
{ .compatible = "brcm,bcm7445-switch-v4.0",
.data = &bcm_sf2_7445_data
},
{ .compatible = "brcm,bcm7278-switch-v4.0",
.data = &bcm_sf2_7278_data
},
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, bcm_sf2_of_match);