![Florian Fainelli](/assets/img/avatar_default.png)
Update the compatible string and Device Tree binding document for 7278B0. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
1186 lines
30 KiB
C
1186 lines
30 KiB
C
/*
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* Broadcom Starfighter 2 DSA switch driver
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*
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* Copyright (C) 2014, Broadcom Corporation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/list.h>
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#include <linux/module.h>
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#include <linux/netdevice.h>
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#include <linux/interrupt.h>
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#include <linux/platform_device.h>
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#include <linux/phy.h>
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#include <linux/phy_fixed.h>
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#include <linux/mii.h>
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#include <linux/of.h>
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#include <linux/of_irq.h>
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#include <linux/of_address.h>
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#include <linux/of_net.h>
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#include <linux/of_mdio.h>
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#include <net/dsa.h>
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#include <linux/ethtool.h>
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#include <linux/if_bridge.h>
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#include <linux/brcmphy.h>
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#include <linux/etherdevice.h>
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#include <linux/platform_data/b53.h>
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#include "bcm_sf2.h"
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#include "bcm_sf2_regs.h"
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#include "b53/b53_priv.h"
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#include "b53/b53_regs.h"
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static void bcm_sf2_imp_setup(struct dsa_switch *ds, int port)
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{
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struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
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unsigned int i;
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u32 reg, offset;
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if (priv->type == BCM7445_DEVICE_ID)
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offset = CORE_STS_OVERRIDE_IMP;
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else
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offset = CORE_STS_OVERRIDE_IMP2;
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/* Enable the port memories */
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reg = core_readl(priv, CORE_MEM_PSM_VDD_CTRL);
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reg &= ~P_TXQ_PSM_VDD(port);
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core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL);
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/* Enable Broadcast, Multicast, Unicast forwarding to IMP port */
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reg = core_readl(priv, CORE_IMP_CTL);
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reg |= (RX_BCST_EN | RX_MCST_EN | RX_UCST_EN);
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reg &= ~(RX_DIS | TX_DIS);
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core_writel(priv, reg, CORE_IMP_CTL);
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/* Enable forwarding */
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core_writel(priv, SW_FWDG_EN, CORE_SWMODE);
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/* Enable IMP port in dumb mode */
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reg = core_readl(priv, CORE_SWITCH_CTRL);
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reg |= MII_DUMB_FWDG_EN;
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core_writel(priv, reg, CORE_SWITCH_CTRL);
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/* Configure Traffic Class to QoS mapping, allow each priority to map
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* to a different queue number
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*/
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reg = core_readl(priv, CORE_PORT_TC2_QOS_MAP_PORT(port));
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for (i = 0; i < SF2_NUM_EGRESS_QUEUES; i++)
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reg |= i << (PRT_TO_QID_SHIFT * i);
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core_writel(priv, reg, CORE_PORT_TC2_QOS_MAP_PORT(port));
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b53_brcm_hdr_setup(ds, port);
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/* Force link status for IMP port */
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reg = core_readl(priv, offset);
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reg |= (MII_SW_OR | LINK_STS);
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core_writel(priv, reg, offset);
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}
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static void bcm_sf2_gphy_enable_set(struct dsa_switch *ds, bool enable)
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{
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struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
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u32 reg;
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reg = reg_readl(priv, REG_SPHY_CNTRL);
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if (enable) {
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reg |= PHY_RESET;
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reg &= ~(EXT_PWR_DOWN | IDDQ_BIAS | IDDQ_GLOBAL_PWR | CK25_DIS);
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reg_writel(priv, reg, REG_SPHY_CNTRL);
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udelay(21);
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reg = reg_readl(priv, REG_SPHY_CNTRL);
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reg &= ~PHY_RESET;
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} else {
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reg |= EXT_PWR_DOWN | IDDQ_BIAS | PHY_RESET;
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reg_writel(priv, reg, REG_SPHY_CNTRL);
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mdelay(1);
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reg |= CK25_DIS;
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}
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reg_writel(priv, reg, REG_SPHY_CNTRL);
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/* Use PHY-driven LED signaling */
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if (!enable) {
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reg = reg_readl(priv, REG_LED_CNTRL(0));
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reg |= SPDLNK_SRC_SEL;
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reg_writel(priv, reg, REG_LED_CNTRL(0));
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}
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}
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static inline void bcm_sf2_port_intr_enable(struct bcm_sf2_priv *priv,
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int port)
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{
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unsigned int off;
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switch (port) {
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case 7:
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off = P7_IRQ_OFF;
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break;
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case 0:
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/* Port 0 interrupts are located on the first bank */
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intrl2_0_mask_clear(priv, P_IRQ_MASK(P0_IRQ_OFF));
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return;
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default:
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off = P_IRQ_OFF(port);
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break;
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}
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intrl2_1_mask_clear(priv, P_IRQ_MASK(off));
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}
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static inline void bcm_sf2_port_intr_disable(struct bcm_sf2_priv *priv,
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int port)
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{
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unsigned int off;
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switch (port) {
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case 7:
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off = P7_IRQ_OFF;
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break;
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case 0:
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/* Port 0 interrupts are located on the first bank */
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intrl2_0_mask_set(priv, P_IRQ_MASK(P0_IRQ_OFF));
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intrl2_0_writel(priv, P_IRQ_MASK(P0_IRQ_OFF), INTRL2_CPU_CLEAR);
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return;
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default:
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off = P_IRQ_OFF(port);
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break;
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}
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intrl2_1_mask_set(priv, P_IRQ_MASK(off));
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intrl2_1_writel(priv, P_IRQ_MASK(off), INTRL2_CPU_CLEAR);
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}
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static int bcm_sf2_port_setup(struct dsa_switch *ds, int port,
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struct phy_device *phy)
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{
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struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
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unsigned int i;
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u32 reg;
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/* Clear the memory power down */
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reg = core_readl(priv, CORE_MEM_PSM_VDD_CTRL);
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reg &= ~P_TXQ_PSM_VDD(port);
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core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL);
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/* Enable Broadcom tags for that port if requested */
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if (priv->brcm_tag_mask & BIT(port))
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b53_brcm_hdr_setup(ds, port);
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/* Configure Traffic Class to QoS mapping, allow each priority to map
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* to a different queue number
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*/
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reg = core_readl(priv, CORE_PORT_TC2_QOS_MAP_PORT(port));
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for (i = 0; i < SF2_NUM_EGRESS_QUEUES; i++)
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reg |= i << (PRT_TO_QID_SHIFT * i);
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core_writel(priv, reg, CORE_PORT_TC2_QOS_MAP_PORT(port));
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/* Re-enable the GPHY and re-apply workarounds */
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if (priv->int_phy_mask & 1 << port && priv->hw_params.num_gphy == 1) {
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bcm_sf2_gphy_enable_set(ds, true);
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if (phy) {
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/* if phy_stop() has been called before, phy
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* will be in halted state, and phy_start()
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* will call resume.
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*
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* the resume path does not configure back
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* autoneg settings, and since we hard reset
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* the phy manually here, we need to reset the
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* state machine also.
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*/
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phy->state = PHY_READY;
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phy_init_hw(phy);
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}
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}
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/* Enable MoCA port interrupts to get notified */
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if (port == priv->moca_port)
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bcm_sf2_port_intr_enable(priv, port);
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/* Set per-queue pause threshold to 32 */
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core_writel(priv, 32, CORE_TXQ_THD_PAUSE_QN_PORT(port));
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/* Set ACB threshold to 24 */
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for (i = 0; i < SF2_NUM_EGRESS_QUEUES; i++) {
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reg = acb_readl(priv, ACB_QUEUE_CFG(port *
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SF2_NUM_EGRESS_QUEUES + i));
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reg &= ~XOFF_THRESHOLD_MASK;
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reg |= 24;
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acb_writel(priv, reg, ACB_QUEUE_CFG(port *
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SF2_NUM_EGRESS_QUEUES + i));
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}
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return b53_enable_port(ds, port, phy);
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}
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static void bcm_sf2_port_disable(struct dsa_switch *ds, int port,
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struct phy_device *phy)
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{
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struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
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u32 off, reg;
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if (priv->wol_ports_mask & (1 << port))
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return;
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if (port == priv->moca_port)
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bcm_sf2_port_intr_disable(priv, port);
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if (priv->int_phy_mask & 1 << port && priv->hw_params.num_gphy == 1)
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bcm_sf2_gphy_enable_set(ds, false);
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if (dsa_is_cpu_port(ds, port))
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off = CORE_IMP_CTL;
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else
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off = CORE_G_PCTL_PORT(port);
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b53_disable_port(ds, port, phy);
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/* Power down the port memory */
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reg = core_readl(priv, CORE_MEM_PSM_VDD_CTRL);
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reg |= P_TXQ_PSM_VDD(port);
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core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL);
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}
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static int bcm_sf2_sw_indir_rw(struct bcm_sf2_priv *priv, int op, int addr,
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int regnum, u16 val)
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{
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int ret = 0;
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u32 reg;
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reg = reg_readl(priv, REG_SWITCH_CNTRL);
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reg |= MDIO_MASTER_SEL;
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reg_writel(priv, reg, REG_SWITCH_CNTRL);
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/* Page << 8 | offset */
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reg = 0x70;
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reg <<= 2;
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core_writel(priv, addr, reg);
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/* Page << 8 | offset */
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reg = 0x80 << 8 | regnum << 1;
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reg <<= 2;
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if (op)
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ret = core_readl(priv, reg);
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else
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core_writel(priv, val, reg);
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reg = reg_readl(priv, REG_SWITCH_CNTRL);
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reg &= ~MDIO_MASTER_SEL;
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reg_writel(priv, reg, REG_SWITCH_CNTRL);
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return ret & 0xffff;
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}
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static int bcm_sf2_sw_mdio_read(struct mii_bus *bus, int addr, int regnum)
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{
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struct bcm_sf2_priv *priv = bus->priv;
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/* Intercept reads from Broadcom pseudo-PHY address, else, send
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* them to our master MDIO bus controller
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*/
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if (addr == BRCM_PSEUDO_PHY_ADDR && priv->indir_phy_mask & BIT(addr))
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return bcm_sf2_sw_indir_rw(priv, 1, addr, regnum, 0);
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else
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return mdiobus_read_nested(priv->master_mii_bus, addr, regnum);
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}
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static int bcm_sf2_sw_mdio_write(struct mii_bus *bus, int addr, int regnum,
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u16 val)
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{
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struct bcm_sf2_priv *priv = bus->priv;
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/* Intercept writes to the Broadcom pseudo-PHY address, else,
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* send them to our master MDIO bus controller
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*/
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if (addr == BRCM_PSEUDO_PHY_ADDR && priv->indir_phy_mask & BIT(addr))
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bcm_sf2_sw_indir_rw(priv, 0, addr, regnum, val);
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else
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mdiobus_write_nested(priv->master_mii_bus, addr, regnum, val);
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return 0;
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}
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static irqreturn_t bcm_sf2_switch_0_isr(int irq, void *dev_id)
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{
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struct bcm_sf2_priv *priv = dev_id;
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priv->irq0_stat = intrl2_0_readl(priv, INTRL2_CPU_STATUS) &
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~priv->irq0_mask;
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intrl2_0_writel(priv, priv->irq0_stat, INTRL2_CPU_CLEAR);
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return IRQ_HANDLED;
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}
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static irqreturn_t bcm_sf2_switch_1_isr(int irq, void *dev_id)
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{
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struct bcm_sf2_priv *priv = dev_id;
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priv->irq1_stat = intrl2_1_readl(priv, INTRL2_CPU_STATUS) &
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~priv->irq1_mask;
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intrl2_1_writel(priv, priv->irq1_stat, INTRL2_CPU_CLEAR);
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if (priv->irq1_stat & P_LINK_UP_IRQ(P7_IRQ_OFF))
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priv->port_sts[7].link = 1;
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if (priv->irq1_stat & P_LINK_DOWN_IRQ(P7_IRQ_OFF))
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priv->port_sts[7].link = 0;
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return IRQ_HANDLED;
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}
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static int bcm_sf2_sw_rst(struct bcm_sf2_priv *priv)
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{
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unsigned int timeout = 1000;
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u32 reg;
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reg = core_readl(priv, CORE_WATCHDOG_CTRL);
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reg |= SOFTWARE_RESET | EN_CHIP_RST | EN_SW_RESET;
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core_writel(priv, reg, CORE_WATCHDOG_CTRL);
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do {
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reg = core_readl(priv, CORE_WATCHDOG_CTRL);
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if (!(reg & SOFTWARE_RESET))
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break;
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usleep_range(1000, 2000);
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} while (timeout-- > 0);
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if (timeout == 0)
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return -ETIMEDOUT;
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return 0;
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}
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static void bcm_sf2_intr_disable(struct bcm_sf2_priv *priv)
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{
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intrl2_0_mask_set(priv, 0xffffffff);
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intrl2_0_writel(priv, 0xffffffff, INTRL2_CPU_CLEAR);
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intrl2_1_mask_set(priv, 0xffffffff);
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intrl2_1_writel(priv, 0xffffffff, INTRL2_CPU_CLEAR);
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}
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static void bcm_sf2_identify_ports(struct bcm_sf2_priv *priv,
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struct device_node *dn)
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{
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struct device_node *port;
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int mode;
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unsigned int port_num;
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priv->moca_port = -1;
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for_each_available_child_of_node(dn, port) {
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if (of_property_read_u32(port, "reg", &port_num))
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continue;
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/* Internal PHYs get assigned a specific 'phy-mode' property
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* value: "internal" to help flag them before MDIO probing
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* has completed, since they might be turned off at that
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* time
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*/
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mode = of_get_phy_mode(port);
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if (mode < 0)
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continue;
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if (mode == PHY_INTERFACE_MODE_INTERNAL)
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priv->int_phy_mask |= 1 << port_num;
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if (mode == PHY_INTERFACE_MODE_MOCA)
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priv->moca_port = port_num;
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if (of_property_read_bool(port, "brcm,use-bcm-hdr"))
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priv->brcm_tag_mask |= 1 << port_num;
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}
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}
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static int bcm_sf2_mdio_register(struct dsa_switch *ds)
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{
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struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
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struct device_node *dn;
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static int index;
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int err;
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/* Find our integrated MDIO bus node */
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dn = of_find_compatible_node(NULL, NULL, "brcm,unimac-mdio");
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priv->master_mii_bus = of_mdio_find_bus(dn);
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if (!priv->master_mii_bus)
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return -EPROBE_DEFER;
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get_device(&priv->master_mii_bus->dev);
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priv->master_mii_dn = dn;
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priv->slave_mii_bus = devm_mdiobus_alloc(ds->dev);
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if (!priv->slave_mii_bus)
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return -ENOMEM;
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priv->slave_mii_bus->priv = priv;
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priv->slave_mii_bus->name = "sf2 slave mii";
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priv->slave_mii_bus->read = bcm_sf2_sw_mdio_read;
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priv->slave_mii_bus->write = bcm_sf2_sw_mdio_write;
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snprintf(priv->slave_mii_bus->id, MII_BUS_ID_SIZE, "sf2-%d",
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index++);
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priv->slave_mii_bus->dev.of_node = dn;
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/* Include the pseudo-PHY address to divert reads towards our
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* workaround. This is only required for 7445D0, since 7445E0
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* disconnects the internal switch pseudo-PHY such that we can use the
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* regular SWITCH_MDIO master controller instead.
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*
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* Here we flag the pseudo PHY as needing special treatment and would
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* otherwise make all other PHY read/writes go to the master MDIO bus
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* controller that comes with this switch backed by the "mdio-unimac"
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* driver.
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*/
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if (of_machine_is_compatible("brcm,bcm7445d0"))
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priv->indir_phy_mask |= (1 << BRCM_PSEUDO_PHY_ADDR);
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else
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priv->indir_phy_mask = 0;
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ds->phys_mii_mask = priv->indir_phy_mask;
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ds->slave_mii_bus = priv->slave_mii_bus;
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priv->slave_mii_bus->parent = ds->dev->parent;
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priv->slave_mii_bus->phy_mask = ~priv->indir_phy_mask;
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if (dn)
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err = of_mdiobus_register(priv->slave_mii_bus, dn);
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else
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err = mdiobus_register(priv->slave_mii_bus);
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if (err)
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of_node_put(dn);
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return err;
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}
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static void bcm_sf2_mdio_unregister(struct bcm_sf2_priv *priv)
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{
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mdiobus_unregister(priv->slave_mii_bus);
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if (priv->master_mii_dn)
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of_node_put(priv->master_mii_dn);
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}
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static u32 bcm_sf2_sw_get_phy_flags(struct dsa_switch *ds, int port)
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{
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struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
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|
/* The BCM7xxx PHY driver expects to find the integrated PHY revision
|
|
* in bits 15:8 and the patch level in bits 7:0 which is exactly what
|
|
* the REG_PHY_REVISION register layout is.
|
|
*/
|
|
|
|
return priv->hw_params.gphy_rev;
|
|
}
|
|
|
|
static void bcm_sf2_sw_adjust_link(struct dsa_switch *ds, int port,
|
|
struct phy_device *phydev)
|
|
{
|
|
struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
|
|
struct ethtool_eee *p = &priv->dev->ports[port].eee;
|
|
u32 id_mode_dis = 0, port_mode;
|
|
const char *str = NULL;
|
|
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:
|
|
str = "RGMII (no delay)";
|
|
id_mode_dis = 1;
|
|
case PHY_INTERFACE_MODE_RGMII_TXID:
|
|
if (!str)
|
|
str = "RGMII (TX delay)";
|
|
port_mode = EXT_GPHY;
|
|
break;
|
|
case PHY_INTERFACE_MODE_MII:
|
|
str = "MII";
|
|
port_mode = EXT_EPHY;
|
|
break;
|
|
case PHY_INTERFACE_MODE_REVMII:
|
|
str = "Reverse MII";
|
|
port_mode = EXT_REVMII;
|
|
break;
|
|
default:
|
|
/* All other PHYs: internal and MoCA */
|
|
goto force_link;
|
|
}
|
|
|
|
/* If the link is down, just disable the interface to conserve power */
|
|
if (!phydev->link) {
|
|
reg = reg_readl(priv, REG_RGMII_CNTRL_P(port));
|
|
reg &= ~RGMII_MODE_EN;
|
|
reg_writel(priv, reg, REG_RGMII_CNTRL_P(port));
|
|
goto force_link;
|
|
}
|
|
|
|
/* Clear id_mode_dis bit, and the existing port mode, but
|
|
* make sure we enable the RGMII block for data to pass
|
|
*/
|
|
reg = reg_readl(priv, REG_RGMII_CNTRL_P(port));
|
|
reg &= ~ID_MODE_DIS;
|
|
reg &= ~(PORT_MODE_MASK << PORT_MODE_SHIFT);
|
|
reg &= ~(RX_PAUSE_EN | TX_PAUSE_EN);
|
|
|
|
reg |= port_mode | RGMII_MODE_EN;
|
|
if (id_mode_dis)
|
|
reg |= ID_MODE_DIS;
|
|
|
|
if (phydev->pause) {
|
|
if (phydev->asym_pause)
|
|
reg |= TX_PAUSE_EN;
|
|
reg |= RX_PAUSE_EN;
|
|
}
|
|
|
|
reg_writel(priv, reg, REG_RGMII_CNTRL_P(port));
|
|
|
|
pr_info("Port %d configured for %s\n", port, str);
|
|
|
|
force_link:
|
|
/* Force link settings detected from the PHY */
|
|
reg = SW_OVERRIDE;
|
|
switch (phydev->speed) {
|
|
case SPEED_1000:
|
|
reg |= SPDSTS_1000 << SPEED_SHIFT;
|
|
break;
|
|
case SPEED_100:
|
|
reg |= SPDSTS_100 << SPEED_SHIFT;
|
|
break;
|
|
}
|
|
|
|
if (phydev->link)
|
|
reg |= LINK_STS;
|
|
if (phydev->duplex == DUPLEX_FULL)
|
|
reg |= DUPLX_MODE;
|
|
|
|
core_writel(priv, reg, offset);
|
|
|
|
if (!phydev->is_pseudo_fixed_link)
|
|
p->eee_enabled = b53_eee_init(ds, port, phydev);
|
|
}
|
|
|
|
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, 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);
|
|
|
|
status->link = 0;
|
|
|
|
/* MoCA port is special as we do not get link status from CORE_LNKSTS,
|
|
* which means that we need to force the link at the port override
|
|
* level to get the data to flow. We do use what the interrupt handler
|
|
* did determine before.
|
|
*
|
|
* For the other ports, we just force the link status, since this is
|
|
* a fixed PHY device.
|
|
*/
|
|
if (port == priv->moca_port) {
|
|
status->link = priv->port_sts[port].link;
|
|
/* For MoCA interfaces, also force a link down notification
|
|
* since some version of the user-space daemon (mocad) use
|
|
* cmd->autoneg to force the link, which messes up the PHY
|
|
* state machine and make it go in PHY_FORCING state instead.
|
|
*/
|
|
if (!status->link)
|
|
netif_carrier_off(ds->ports[port].slave);
|
|
status->duplex = 1;
|
|
} else {
|
|
status->link = 1;
|
|
status->duplex = !!(duplex & (1 << port));
|
|
}
|
|
|
|
reg = core_readl(priv, offset);
|
|
reg |= SW_OVERRIDE;
|
|
if (status->link)
|
|
reg |= LINK_STS;
|
|
else
|
|
reg &= ~LINK_STS;
|
|
core_writel(priv, reg, offset);
|
|
|
|
if ((pause & (1 << port)) &&
|
|
(pause & (1 << (port + PAUSESTS_TX_PAUSE_SHIFT)))) {
|
|
status->asym_pause = 1;
|
|
status->pause = 1;
|
|
}
|
|
|
|
if (pause & (1 << port))
|
|
status->pause = 1;
|
|
}
|
|
|
|
static void bcm_sf2_enable_acb(struct dsa_switch *ds)
|
|
{
|
|
struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
|
|
u32 reg;
|
|
|
|
/* Enable ACB globally */
|
|
reg = acb_readl(priv, ACB_CONTROL);
|
|
reg |= (ACB_FLUSH_MASK << ACB_FLUSH_SHIFT);
|
|
acb_writel(priv, reg, ACB_CONTROL);
|
|
reg &= ~(ACB_FLUSH_MASK << ACB_FLUSH_SHIFT);
|
|
reg |= ACB_EN | ACB_ALGORITHM;
|
|
acb_writel(priv, reg, ACB_CONTROL);
|
|
}
|
|
|
|
static int bcm_sf2_sw_suspend(struct dsa_switch *ds)
|
|
{
|
|
struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
|
|
unsigned int port;
|
|
|
|
bcm_sf2_intr_disable(priv);
|
|
|
|
/* 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 (dsa_is_user_port(ds, port) || dsa_is_cpu_port(ds, port))
|
|
bcm_sf2_port_disable(ds, port, NULL);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bcm_sf2_sw_resume(struct dsa_switch *ds)
|
|
{
|
|
struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
|
|
unsigned int port;
|
|
int ret;
|
|
|
|
ret = bcm_sf2_sw_rst(priv);
|
|
if (ret) {
|
|
pr_err("%s: failed to software reset switch\n", __func__);
|
|
return ret;
|
|
}
|
|
|
|
if (priv->hw_params.num_gphy == 1)
|
|
bcm_sf2_gphy_enable_set(ds, true);
|
|
|
|
for (port = 0; port < DSA_MAX_PORTS; port++) {
|
|
if (dsa_is_user_port(ds, port))
|
|
bcm_sf2_port_setup(ds, port, NULL);
|
|
else if (dsa_is_cpu_port(ds, port))
|
|
bcm_sf2_imp_setup(ds, port);
|
|
}
|
|
|
|
bcm_sf2_enable_acb(ds);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void bcm_sf2_sw_get_wol(struct dsa_switch *ds, int port,
|
|
struct ethtool_wolinfo *wol)
|
|
{
|
|
struct net_device *p = ds->ports[port].cpu_dp->master;
|
|
struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
|
|
struct ethtool_wolinfo pwol;
|
|
|
|
/* Get the parent device WoL settings */
|
|
p->ethtool_ops->get_wol(p, &pwol);
|
|
|
|
/* Advertise the parent device supported settings */
|
|
wol->supported = pwol.supported;
|
|
memset(&wol->sopass, 0, sizeof(wol->sopass));
|
|
|
|
if (pwol.wolopts & WAKE_MAGICSECURE)
|
|
memcpy(&wol->sopass, pwol.sopass, sizeof(wol->sopass));
|
|
|
|
if (priv->wol_ports_mask & (1 << port))
|
|
wol->wolopts = pwol.wolopts;
|
|
else
|
|
wol->wolopts = 0;
|
|
}
|
|
|
|
static int bcm_sf2_sw_set_wol(struct dsa_switch *ds, int port,
|
|
struct ethtool_wolinfo *wol)
|
|
{
|
|
struct net_device *p = ds->ports[port].cpu_dp->master;
|
|
struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
|
|
s8 cpu_port = ds->ports[port].cpu_dp->index;
|
|
struct ethtool_wolinfo pwol;
|
|
|
|
p->ethtool_ops->get_wol(p, &pwol);
|
|
if (wol->wolopts & ~pwol.supported)
|
|
return -EINVAL;
|
|
|
|
if (wol->wolopts)
|
|
priv->wol_ports_mask |= (1 << port);
|
|
else
|
|
priv->wol_ports_mask &= ~(1 << port);
|
|
|
|
/* If we have at least one port enabled, make sure the CPU port
|
|
* is also enabled. If the CPU port is the last one enabled, we disable
|
|
* it since this configuration does not make sense.
|
|
*/
|
|
if (priv->wol_ports_mask && priv->wol_ports_mask != (1 << cpu_port))
|
|
priv->wol_ports_mask |= (1 << cpu_port);
|
|
else
|
|
priv->wol_ports_mask &= ~(1 << cpu_port);
|
|
|
|
return p->ethtool_ops->set_wol(p, wol);
|
|
}
|
|
|
|
static int bcm_sf2_sw_setup(struct dsa_switch *ds)
|
|
{
|
|
struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
|
|
unsigned int port;
|
|
|
|
/* Enable all valid ports and disable those unused */
|
|
for (port = 0; port < priv->hw_params.num_ports; port++) {
|
|
/* IMP port receives special treatment */
|
|
if (dsa_is_user_port(ds, port))
|
|
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);
|
|
}
|
|
|
|
b53_configure_vlan(ds);
|
|
bcm_sf2_enable_acb(ds);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* The SWITCH_CORE register space is managed by b53 but operates on a page +
|
|
* register basis so we need to translate that into an address that the
|
|
* bus-glue understands.
|
|
*/
|
|
#define SF2_PAGE_REG_MKADDR(page, reg) ((page) << 10 | (reg) << 2)
|
|
|
|
static int bcm_sf2_core_read8(struct b53_device *dev, u8 page, u8 reg,
|
|
u8 *val)
|
|
{
|
|
struct bcm_sf2_priv *priv = dev->priv;
|
|
|
|
*val = core_readl(priv, SF2_PAGE_REG_MKADDR(page, reg));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bcm_sf2_core_read16(struct b53_device *dev, u8 page, u8 reg,
|
|
u16 *val)
|
|
{
|
|
struct bcm_sf2_priv *priv = dev->priv;
|
|
|
|
*val = core_readl(priv, SF2_PAGE_REG_MKADDR(page, reg));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bcm_sf2_core_read32(struct b53_device *dev, u8 page, u8 reg,
|
|
u32 *val)
|
|
{
|
|
struct bcm_sf2_priv *priv = dev->priv;
|
|
|
|
*val = core_readl(priv, SF2_PAGE_REG_MKADDR(page, reg));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bcm_sf2_core_read64(struct b53_device *dev, u8 page, u8 reg,
|
|
u64 *val)
|
|
{
|
|
struct bcm_sf2_priv *priv = dev->priv;
|
|
|
|
*val = core_readq(priv, SF2_PAGE_REG_MKADDR(page, reg));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bcm_sf2_core_write8(struct b53_device *dev, u8 page, u8 reg,
|
|
u8 value)
|
|
{
|
|
struct bcm_sf2_priv *priv = dev->priv;
|
|
|
|
core_writel(priv, value, SF2_PAGE_REG_MKADDR(page, reg));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bcm_sf2_core_write16(struct b53_device *dev, u8 page, u8 reg,
|
|
u16 value)
|
|
{
|
|
struct bcm_sf2_priv *priv = dev->priv;
|
|
|
|
core_writel(priv, value, SF2_PAGE_REG_MKADDR(page, reg));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bcm_sf2_core_write32(struct b53_device *dev, u8 page, u8 reg,
|
|
u32 value)
|
|
{
|
|
struct bcm_sf2_priv *priv = dev->priv;
|
|
|
|
core_writel(priv, value, SF2_PAGE_REG_MKADDR(page, reg));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bcm_sf2_core_write64(struct b53_device *dev, u8 page, u8 reg,
|
|
u64 value)
|
|
{
|
|
struct bcm_sf2_priv *priv = dev->priv;
|
|
|
|
core_writeq(priv, value, SF2_PAGE_REG_MKADDR(page, reg));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct b53_io_ops bcm_sf2_io_ops = {
|
|
.read8 = bcm_sf2_core_read8,
|
|
.read16 = bcm_sf2_core_read16,
|
|
.read32 = bcm_sf2_core_read32,
|
|
.read48 = bcm_sf2_core_read64,
|
|
.read64 = bcm_sf2_core_read64,
|
|
.write8 = bcm_sf2_core_write8,
|
|
.write16 = bcm_sf2_core_write16,
|
|
.write32 = bcm_sf2_core_write32,
|
|
.write48 = bcm_sf2_core_write64,
|
|
.write64 = bcm_sf2_core_write64,
|
|
};
|
|
|
|
static const struct dsa_switch_ops bcm_sf2_ops = {
|
|
.get_tag_protocol = b53_get_tag_protocol,
|
|
.setup = bcm_sf2_sw_setup,
|
|
.get_strings = b53_get_strings,
|
|
.get_ethtool_stats = b53_get_ethtool_stats,
|
|
.get_sset_count = b53_get_sset_count,
|
|
.get_phy_flags = bcm_sf2_sw_get_phy_flags,
|
|
.adjust_link = bcm_sf2_sw_adjust_link,
|
|
.fixed_link_update = bcm_sf2_sw_fixed_link_update,
|
|
.suspend = bcm_sf2_sw_suspend,
|
|
.resume = bcm_sf2_sw_resume,
|
|
.get_wol = bcm_sf2_sw_get_wol,
|
|
.set_wol = bcm_sf2_sw_set_wol,
|
|
.port_enable = bcm_sf2_port_setup,
|
|
.port_disable = bcm_sf2_port_disable,
|
|
.get_mac_eee = b53_get_mac_eee,
|
|
.set_mac_eee = b53_set_mac_eee,
|
|
.port_bridge_join = b53_br_join,
|
|
.port_bridge_leave = b53_br_leave,
|
|
.port_stp_state_set = b53_br_set_stp_state,
|
|
.port_fast_age = b53_br_fast_age,
|
|
.port_vlan_filtering = b53_vlan_filtering,
|
|
.port_vlan_prepare = b53_vlan_prepare,
|
|
.port_vlan_add = b53_vlan_add,
|
|
.port_vlan_del = b53_vlan_del,
|
|
.port_fdb_dump = b53_fdb_dump,
|
|
.port_fdb_add = b53_fdb_add,
|
|
.port_fdb_del = b53_fdb_del,
|
|
.get_rxnfc = bcm_sf2_get_rxnfc,
|
|
.set_rxnfc = bcm_sf2_set_rxnfc,
|
|
.port_mirror_add = b53_mirror_add,
|
|
.port_mirror_del = b53_mirror_del,
|
|
};
|
|
|
|
struct bcm_sf2_of_data {
|
|
u32 type;
|
|
const u16 *reg_offsets;
|
|
unsigned int core_reg_align;
|
|
unsigned int num_cfp_rules;
|
|
};
|
|
|
|
/* Register offsets for the SWITCH_REG_* block */
|
|
static const u16 bcm_sf2_7445_reg_offsets[] = {
|
|
[REG_SWITCH_CNTRL] = 0x00,
|
|
[REG_SWITCH_STATUS] = 0x04,
|
|
[REG_DIR_DATA_WRITE] = 0x08,
|
|
[REG_DIR_DATA_READ] = 0x0C,
|
|
[REG_SWITCH_REVISION] = 0x18,
|
|
[REG_PHY_REVISION] = 0x1C,
|
|
[REG_SPHY_CNTRL] = 0x2C,
|
|
[REG_RGMII_0_CNTRL] = 0x34,
|
|
[REG_RGMII_1_CNTRL] = 0x40,
|
|
[REG_RGMII_2_CNTRL] = 0x4c,
|
|
[REG_LED_0_CNTRL] = 0x90,
|
|
[REG_LED_1_CNTRL] = 0x94,
|
|
[REG_LED_2_CNTRL] = 0x98,
|
|
};
|
|
|
|
static const struct bcm_sf2_of_data bcm_sf2_7445_data = {
|
|
.type = BCM7445_DEVICE_ID,
|
|
.core_reg_align = 0,
|
|
.reg_offsets = bcm_sf2_7445_reg_offsets,
|
|
.num_cfp_rules = 256,
|
|
};
|
|
|
|
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,
|
|
.num_cfp_rules = 128,
|
|
};
|
|
|
|
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
|
|
},
|
|
{ .compatible = "brcm,bcm7278-switch-v4.8",
|
|
.data = &bcm_sf2_7278_data
|
|
},
|
|
{ /* sentinel */ },
|
|
};
|
|
MODULE_DEVICE_TABLE(of, bcm_sf2_of_match);
|
|
|
|
static int bcm_sf2_sw_probe(struct platform_device *pdev)
|
|
{
|
|
const char *reg_names[BCM_SF2_REGS_NUM] = BCM_SF2_REGS_NAME;
|
|
struct device_node *dn = pdev->dev.of_node;
|
|
const struct of_device_id *of_id = NULL;
|
|
const struct bcm_sf2_of_data *data;
|
|
struct b53_platform_data *pdata;
|
|
struct dsa_switch_ops *ops;
|
|
struct bcm_sf2_priv *priv;
|
|
struct b53_device *dev;
|
|
struct dsa_switch *ds;
|
|
void __iomem **base;
|
|
struct resource *r;
|
|
unsigned int i;
|
|
u32 reg, rev;
|
|
int ret;
|
|
|
|
priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
|
|
if (!priv)
|
|
return -ENOMEM;
|
|
|
|
ops = devm_kzalloc(&pdev->dev, sizeof(*ops), GFP_KERNEL);
|
|
if (!ops)
|
|
return -ENOMEM;
|
|
|
|
dev = b53_switch_alloc(&pdev->dev, &bcm_sf2_io_ops, priv);
|
|
if (!dev)
|
|
return -ENOMEM;
|
|
|
|
pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
|
|
if (!pdata)
|
|
return -ENOMEM;
|
|
|
|
of_id = of_match_node(bcm_sf2_of_match, dn);
|
|
if (!of_id || !of_id->data)
|
|
return -EINVAL;
|
|
|
|
data = of_id->data;
|
|
|
|
/* Set SWITCH_REG register offsets and SWITCH_CORE align factor */
|
|
priv->type = data->type;
|
|
priv->reg_offsets = data->reg_offsets;
|
|
priv->core_reg_align = data->core_reg_align;
|
|
priv->num_cfp_rules = data->num_cfp_rules;
|
|
|
|
/* Auto-detection using standard registers will not work, so
|
|
* provide an indication of what kind of device we are for
|
|
* b53_common to work with
|
|
*/
|
|
pdata->chip_id = priv->type;
|
|
dev->pdata = pdata;
|
|
|
|
priv->dev = dev;
|
|
ds = dev->ds;
|
|
ds->ops = &bcm_sf2_ops;
|
|
|
|
/* Advertise the 8 egress queues */
|
|
ds->num_tx_queues = SF2_NUM_EGRESS_QUEUES;
|
|
|
|
dev_set_drvdata(&pdev->dev, priv);
|
|
|
|
spin_lock_init(&priv->indir_lock);
|
|
mutex_init(&priv->stats_mutex);
|
|
mutex_init(&priv->cfp.lock);
|
|
|
|
/* CFP rule #0 cannot be used for specific classifications, flag it as
|
|
* permanently used
|
|
*/
|
|
set_bit(0, priv->cfp.used);
|
|
set_bit(0, priv->cfp.unique);
|
|
|
|
bcm_sf2_identify_ports(priv, dn->child);
|
|
|
|
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++) {
|
|
r = platform_get_resource(pdev, IORESOURCE_MEM, i);
|
|
*base = devm_ioremap_resource(&pdev->dev, r);
|
|
if (IS_ERR(*base)) {
|
|
pr_err("unable to find register: %s\n", reg_names[i]);
|
|
return PTR_ERR(*base);
|
|
}
|
|
base++;
|
|
}
|
|
|
|
ret = bcm_sf2_sw_rst(priv);
|
|
if (ret) {
|
|
pr_err("unable to software reset switch: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = bcm_sf2_mdio_register(ds);
|
|
if (ret) {
|
|
pr_err("failed to register MDIO bus\n");
|
|
return ret;
|
|
}
|
|
|
|
ret = bcm_sf2_cfp_rst(priv);
|
|
if (ret) {
|
|
pr_err("failed to reset CFP\n");
|
|
goto out_mdio;
|
|
}
|
|
|
|
/* Disable all interrupts and request them */
|
|
bcm_sf2_intr_disable(priv);
|
|
|
|
ret = devm_request_irq(&pdev->dev, 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_mdio;
|
|
}
|
|
|
|
ret = devm_request_irq(&pdev->dev, 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_mdio;
|
|
}
|
|
|
|
/* 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;
|
|
|
|
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;
|
|
|
|
ret = b53_switch_register(dev);
|
|
if (ret)
|
|
goto out_mdio;
|
|
|
|
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_mdio:
|
|
bcm_sf2_mdio_unregister(priv);
|
|
return ret;
|
|
}
|
|
|
|
static int bcm_sf2_sw_remove(struct platform_device *pdev)
|
|
{
|
|
struct bcm_sf2_priv *priv = platform_get_drvdata(pdev);
|
|
|
|
/* Disable all ports and interrupts */
|
|
priv->wol_ports_mask = 0;
|
|
bcm_sf2_sw_suspend(priv->dev->ds);
|
|
dsa_unregister_switch(priv->dev->ds);
|
|
bcm_sf2_mdio_unregister(priv);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void bcm_sf2_sw_shutdown(struct platform_device *pdev)
|
|
{
|
|
struct bcm_sf2_priv *priv = platform_get_drvdata(pdev);
|
|
|
|
/* For a kernel about to be kexec'd we want to keep the GPHY on for a
|
|
* successful MDIO bus scan to occur. If we did turn off the GPHY
|
|
* before (e.g: port_disable), this will also power it back on.
|
|
*
|
|
* Do not rely on kexec_in_progress, just power the PHY on.
|
|
*/
|
|
if (priv->hw_params.num_gphy == 1)
|
|
bcm_sf2_gphy_enable_set(priv->dev->ds, true);
|
|
}
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
static int bcm_sf2_suspend(struct device *dev)
|
|
{
|
|
struct platform_device *pdev = to_platform_device(dev);
|
|
struct bcm_sf2_priv *priv = platform_get_drvdata(pdev);
|
|
|
|
return dsa_switch_suspend(priv->dev->ds);
|
|
}
|
|
|
|
static int bcm_sf2_resume(struct device *dev)
|
|
{
|
|
struct platform_device *pdev = to_platform_device(dev);
|
|
struct bcm_sf2_priv *priv = platform_get_drvdata(pdev);
|
|
|
|
return dsa_switch_resume(priv->dev->ds);
|
|
}
|
|
#endif /* CONFIG_PM_SLEEP */
|
|
|
|
static SIMPLE_DEV_PM_OPS(bcm_sf2_pm_ops,
|
|
bcm_sf2_suspend, bcm_sf2_resume);
|
|
|
|
|
|
static struct platform_driver bcm_sf2_driver = {
|
|
.probe = bcm_sf2_sw_probe,
|
|
.remove = bcm_sf2_sw_remove,
|
|
.shutdown = bcm_sf2_sw_shutdown,
|
|
.driver = {
|
|
.name = "brcm-sf2",
|
|
.of_match_table = bcm_sf2_of_match,
|
|
.pm = &bcm_sf2_pm_ops,
|
|
},
|
|
};
|
|
module_platform_driver(bcm_sf2_driver);
|
|
|
|
MODULE_AUTHOR("Broadcom Corporation");
|
|
MODULE_DESCRIPTION("Driver for Broadcom Starfighter 2 ethernet switch chip");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("platform:brcm-sf2");
|