static void bcm_sf2_intr_disable(struct bcm_sf2_priv *priv)
{
intrl2_0_writel(priv, 0xffffffff, INTRL2_CPU_MASK_SET);
intrl2_0_writel(priv, 0xffffffff, INTRL2_CPU_CLEAR);
intrl2_0_writel(priv, 0, INTRL2_CPU_MASK_CLEAR);
intrl2_1_writel(priv, 0xffffffff, INTRL2_CPU_MASK_SET);
intrl2_1_writel(priv, 0xffffffff, INTRL2_CPU_CLEAR);
intrl2_1_writel(priv, 0, INTRL2_CPU_MASK_CLEAR);
}
static void bcm_sf2_port_disable(struct dsa_switch *ds, int port,
struct phy_device *phy)
{
struct bcm_sf2_priv *priv = ds_to_priv(ds);
u32 off, reg;
if (priv->wol_ports_mask & (1 << port))
return;
if (port == 7) {
intrl2_1_mask_set(priv, P_IRQ_MASK(P7_IRQ_OFF));
intrl2_1_writel(priv, P_IRQ_MASK(P7_IRQ_OFF), INTRL2_CPU_CLEAR);
}
if (port == 0 && priv->hw_params.num_gphy == 1)
bcm_sf2_gphy_enable_set(ds, false);
if (dsa_is_cpu_port(ds, port))
off = CORE_IMP_CTL;
else
off = CORE_G_PCTL_PORT(port);
reg = core_readl(priv, off);
reg |= RX_DIS | TX_DIS;
core_writel(priv, reg, off);
/* Power down the port memory */
reg = core_readl(priv, CORE_MEM_PSM_VDD_CTRL);
reg |= P_TXQ_PSM_VDD(port);
core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL);
}
static void bcm_sf2_intr_disable(struct bcm_sf2_priv *priv)
{
intrl2_0_mask_set(priv, 0xffffffff);
intrl2_0_writel(priv, 0xffffffff, INTRL2_CPU_CLEAR);
intrl2_1_mask_set(priv, 0xffffffff);
intrl2_1_writel(priv, 0xffffffff, INTRL2_CPU_CLEAR);
}
static irqreturn_t bcm_sf2_switch_1_isr(int irq, void *dev_id)
{
struct bcm_sf2_priv *priv = dev_id;
priv->irq1_stat = intrl2_1_readl(priv, INTRL2_CPU_STATUS) &
~priv->irq1_mask;
intrl2_1_writel(priv, priv->irq1_stat, INTRL2_CPU_CLEAR);
if (priv->irq1_stat & P_LINK_UP_IRQ(P7_IRQ_OFF))
priv->port_sts[7].link = 1;
if (priv->irq1_stat & P_LINK_DOWN_IRQ(P7_IRQ_OFF))
priv->port_sts[7].link = 0;
return IRQ_HANDLED;
}
static int bcm_sf2_sw_suspend(struct dsa_switch *ds)
{
struct bcm_sf2_priv *priv = ds_to_priv(ds);
unsigned int port;
intrl2_0_writel(priv, 0xffffffff, INTRL2_CPU_MASK_SET);
intrl2_0_writel(priv, 0xffffffff, INTRL2_CPU_CLEAR);
intrl2_0_writel(priv, 0, INTRL2_CPU_MASK_CLEAR);
intrl2_1_writel(priv, 0xffffffff, INTRL2_CPU_MASK_SET);
intrl2_1_writel(priv, 0xffffffff, INTRL2_CPU_CLEAR);
intrl2_1_writel(priv, 0, INTRL2_CPU_MASK_CLEAR);
/* Disable all ports physically present including the IMP
* port, the other ones have already been disabled during
* bcm_sf2_sw_setup
*/
for (port = 0; port < DSA_MAX_PORTS; port++) {
if ((1 << port) & ds->phys_port_mask ||
dsa_is_cpu_port(ds, port))
bcm_sf2_port_disable(ds, port, NULL);
}
return 0;
}
static irqreturn_t bcm_sf2_switch_1_isr(int irq, void *dev_id)
{
struct dsa_switch *ds = dev_id;
struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
priv->irq1_stat = intrl2_1_readl(priv, INTRL2_CPU_STATUS) &
~priv->irq1_mask;
intrl2_1_writel(priv, priv->irq1_stat, INTRL2_CPU_CLEAR);
if (priv->irq1_stat & P_LINK_UP_IRQ(P7_IRQ_OFF)) {
priv->port_sts[7].link = true;
dsa_port_phylink_mac_change(ds, 7, true);
}
if (priv->irq1_stat & P_LINK_DOWN_IRQ(P7_IRQ_OFF)) {
priv->port_sts[7].link = false;
dsa_port_phylink_mac_change(ds, 7, false);
}
return IRQ_HANDLED;
}
static inline void bcm_sf2_port_intr_disable(struct bcm_sf2_priv *priv,
int port)
{
unsigned int off;
switch (port) {
case 7:
off = P7_IRQ_OFF;
break;
case 0:
/* Port 0 interrupts are located on the first bank */
intrl2_0_mask_set(priv, P_IRQ_MASK(P0_IRQ_OFF));
intrl2_0_writel(priv, P_IRQ_MASK(P0_IRQ_OFF), INTRL2_CPU_CLEAR);
return;
default:
off = P_IRQ_OFF(port);
break;
}
intrl2_1_mask_set(priv, P_IRQ_MASK(off));
intrl2_1_writel(priv, P_IRQ_MASK(off), INTRL2_CPU_CLEAR);
}
static int bcm_sf2_sw_setup(struct dsa_switch *ds)
{
const char *reg_names[BCM_SF2_REGS_NUM] = BCM_SF2_REGS_NAME;
struct bcm_sf2_priv *priv = ds_to_priv(ds);
struct device_node *dn;
void __iomem **base;
unsigned int port;
unsigned int i;
u32 reg, rev;
int ret;
spin_lock_init(&priv->indir_lock);
mutex_init(&priv->stats_mutex);
/* All the interesting properties are at the parent device_node
* level
*/
dn = ds->pd->of_node->parent;
priv->irq0 = irq_of_parse_and_map(dn, 0);
priv->irq1 = irq_of_parse_and_map(dn, 1);
base = &priv->core;
for (i = 0; i < BCM_SF2_REGS_NUM; i++) {
*base = of_iomap(dn, i);
if (*base == NULL) {
pr_err("unable to find register: %s\n", reg_names[i]);
ret = -ENOMEM;
goto out_unmap;
}
base++;
}
ret = bcm_sf2_sw_rst(priv);
if (ret) {
pr_err("unable to software reset switch: %d\n", ret);
goto out_unmap;
}
/* Disable all interrupts and request them */
intrl2_0_writel(priv, 0xffffffff, INTRL2_CPU_MASK_SET);
intrl2_0_writel(priv, 0xffffffff, INTRL2_CPU_CLEAR);
intrl2_0_writel(priv, 0, INTRL2_CPU_MASK_CLEAR);
intrl2_1_writel(priv, 0xffffffff, INTRL2_CPU_MASK_SET);
intrl2_1_writel(priv, 0xffffffff, INTRL2_CPU_CLEAR);
intrl2_1_writel(priv, 0, INTRL2_CPU_MASK_CLEAR);
ret = request_irq(priv->irq0, bcm_sf2_switch_0_isr, 0,
"switch_0", priv);
if (ret < 0) {
pr_err("failed to request switch_0 IRQ\n");
goto out_unmap;
}
ret = request_irq(priv->irq1, bcm_sf2_switch_1_isr, 0,
"switch_1", priv);
if (ret < 0) {
pr_err("failed to request switch_1 IRQ\n");
goto out_free_irq0;
}
/* Reset the MIB counters */
reg = core_readl(priv, CORE_GMNCFGCFG);
reg |= RST_MIB_CNT;
core_writel(priv, reg, CORE_GMNCFGCFG);
reg &= ~RST_MIB_CNT;
core_writel(priv, reg, CORE_GMNCFGCFG);
/* Get the maximum number of ports for this switch */
priv->hw_params.num_ports = core_readl(priv, CORE_IMP0_PRT_ID) + 1;
if (priv->hw_params.num_ports > DSA_MAX_PORTS)
priv->hw_params.num_ports = DSA_MAX_PORTS;
/* Assume a single GPHY setup if we can't read that property */
if (of_property_read_u32(dn, "brcm,num-gphy",
&priv->hw_params.num_gphy))
priv->hw_params.num_gphy = 1;
/* Enable all valid ports and disable those unused */
for (port = 0; port < priv->hw_params.num_ports; port++) {
/* IMP port receives special treatment */
if ((1 << port) & ds->phys_port_mask)
bcm_sf2_port_setup(ds, port, NULL);
else if (dsa_is_cpu_port(ds, port))
bcm_sf2_imp_setup(ds, port);
else
bcm_sf2_port_disable(ds, port, NULL);
}
/* Include the pseudo-PHY address and the broadcast PHY address to
* divert reads towards our workaround
*/
ds->phys_mii_mask |= ((1 << 30) | (1 << 0));
rev = reg_readl(priv, REG_SWITCH_REVISION);
priv->hw_params.top_rev = (rev >> SWITCH_TOP_REV_SHIFT) &
SWITCH_TOP_REV_MASK;
priv->hw_params.core_rev = (rev & SF2_REV_MASK);
rev = reg_readl(priv, REG_PHY_REVISION);
priv->hw_params.gphy_rev = rev & PHY_REVISION_MASK;
pr_info("Starfighter 2 top: %x.%02x, core: %x.%02x base: 0x%p, IRQs: %d, %d\n",
priv->hw_params.top_rev >> 8, priv->hw_params.top_rev & 0xff,
priv->hw_params.core_rev >> 8, priv->hw_params.core_rev & 0xff,
priv->core, priv->irq0, priv->irq1);
return 0;
out_free_irq0:
free_irq(priv->irq0, priv);
out_unmap:
base = &priv->core;
for (i = 0; i < BCM_SF2_REGS_NUM; i++) {
if (*base)
iounmap(*base);
base++;
}
return ret;
}
