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Message-Id: <20180717153645.7500-8-f.fainelli@gmail.com>
Date: Tue, 17 Jul 2018 08:36:44 -0700
From: Florian Fainelli <f.fainelli@...il.com>
To: netdev@...r.kernel.org
Cc: Florian Fainelli <f.fainelli@...il.com>, linville@...driver.com,
davem@...emloft.net, andrew@...n.ch,
vivien.didelot@...oirfairelinux.com
Subject: [PATCH net-next 6/7] net: systemport: Add support for WAKE_FILTER
The SYSTEMPORT MAC allows up to 8 filters to be programmed to wake-up
from LAN. Verify that we have up to 8 filters and program them to the
appropriate RXCHK entries to be matched (along with their masks).
We need to update the entry and exit to Wake-on-LAN mode to keep the
RXCHK engine running to match during suspend, but this is otherwise
fairly similar to Magic Packet detection.
Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
drivers/net/ethernet/broadcom/bcmsysport.c | 111 +++++++++++++++++++++++++----
drivers/net/ethernet/broadcom/bcmsysport.h | 14 +++-
2 files changed, 109 insertions(+), 16 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c
index 511caec7030a..8d7ce3df1080 100644
--- a/drivers/net/ethernet/broadcom/bcmsysport.c
+++ b/drivers/net/ethernet/broadcom/bcmsysport.c
@@ -521,25 +521,31 @@ static void bcm_sysport_get_wol(struct net_device *dev,
struct bcm_sysport_priv *priv = netdev_priv(dev);
u32 reg;
- wol->supported = WAKE_MAGIC | WAKE_MAGICSECURE;
+ wol->supported = WAKE_MAGIC | WAKE_MAGICSECURE | WAKE_FILTER;
wol->wolopts = priv->wolopts;
- if (!(priv->wolopts & WAKE_MAGICSECURE))
- return;
+ if (priv->wolopts & WAKE_MAGICSECURE) {
+ /* Return the programmed SecureOn password */
+ reg = umac_readl(priv, UMAC_PSW_MS);
+ put_unaligned_be16(reg, &wol->sopass[0]);
+ reg = umac_readl(priv, UMAC_PSW_LS);
+ put_unaligned_be32(reg, &wol->sopass[2]);
+ }
- /* Return the programmed SecureOn password */
- reg = umac_readl(priv, UMAC_PSW_MS);
- put_unaligned_be16(reg, &wol->sopass[0]);
- reg = umac_readl(priv, UMAC_PSW_LS);
- put_unaligned_be32(reg, &wol->sopass[2]);
+ if (priv->wolopts & WAKE_FILTER)
+ bitmap_copy((unsigned long *)wol->sopass, priv->filters,
+ WAKE_FILTER_BITS);
}
+
static int bcm_sysport_set_wol(struct net_device *dev,
struct ethtool_wolinfo *wol)
{
struct bcm_sysport_priv *priv = netdev_priv(dev);
struct device *kdev = &priv->pdev->dev;
- u32 supported = WAKE_MAGIC | WAKE_MAGICSECURE;
+ u32 supported = WAKE_MAGIC | WAKE_MAGICSECURE | WAKE_FILTER;
+ unsigned int index, i = 0;
+ u32 reg;
if (!device_can_wakeup(kdev))
return -ENOTSUPP;
@@ -555,6 +561,32 @@ static int bcm_sysport_set_wol(struct net_device *dev,
UMAC_PSW_LS);
}
+ /* We support matching up to 8 filters only */
+ if (wol->wolopts & WAKE_FILTER) {
+ bitmap_copy(priv->filters, (unsigned long *)wol->sopass,
+ WAKE_FILTER_BITS);
+
+ if (bitmap_weight(priv->filters, WAKE_FILTER_BITS) >
+ RXCHK_BRCM_TAG_MAX) {
+ bitmap_zero(priv->filters, WAKE_FILTER_BITS);
+ return -ENOSPC;
+ }
+
+ if (bitmap_weight(priv->filters, WAKE_FILTER_BITS) == 0)
+ return -EINVAL;
+
+ for_each_set_bit(index, priv->filters, WAKE_FILTER_BITS) {
+ /* Write the index we want to match within the CID field */
+ reg = rxchk_readl(priv, RXCHK_BRCM_TAG(i));
+ reg &= ~(RXCHK_BRCM_TAG_CID_MASK <<
+ RXCHK_BRCM_TAG_CID_SHIFT);
+ reg |= index << RXCHK_BRCM_TAG_CID_SHIFT;
+ rxchk_writel(priv, reg, RXCHK_BRCM_TAG(i));
+ rxchk_writel(priv, 0xff00ffff, RXCHK_BRCM_TAG_MASK(i));
+ i++;
+ }
+ }
+
/* Flag the device and relevant IRQ as wakeup capable */
if (wol->wolopts) {
device_set_wakeup_enable(kdev, 1);
@@ -1043,7 +1075,7 @@ static int bcm_sysport_poll(struct napi_struct *napi, int budget)
static void mpd_enable_set(struct bcm_sysport_priv *priv, bool enable)
{
- u32 reg;
+ u32 reg, bit;
reg = umac_readl(priv, UMAC_MPD_CTRL);
if (enable)
@@ -1051,12 +1083,32 @@ static void mpd_enable_set(struct bcm_sysport_priv *priv, bool enable)
else
reg &= ~MPD_EN;
umac_writel(priv, reg, UMAC_MPD_CTRL);
+
+ if (priv->is_lite)
+ bit = RBUF_ACPI_EN_LITE;
+ else
+ bit = RBUF_ACPI_EN;
+
+ reg = rbuf_readl(priv, RBUF_CONTROL);
+ if (enable)
+ reg |= bit;
+ else
+ reg &= ~bit;
+ rbuf_writel(priv, reg, RBUF_CONTROL);
}
static void bcm_sysport_resume_from_wol(struct bcm_sysport_priv *priv)
{
+ u32 reg;
+
/* Stop monitoring MPD interrupt */
- intrl2_0_mask_set(priv, INTRL2_0_MPD);
+ intrl2_0_mask_set(priv, INTRL2_0_MPD | INTRL2_0_BRCM_MATCH_TAG);
+
+ /* Disable RXCHK, active filters and Broadcom tag matching */
+ reg = rxchk_readl(priv, RXCHK_CONTROL);
+ reg &= ~(RXCHK_BRCM_TAG_MATCH_MASK <<
+ RXCHK_BRCM_TAG_MATCH_SHIFT | RXCHK_EN | RXCHK_BRCM_TAG_EN);
+ rxchk_writel(priv, reg, RXCHK_CONTROL);
/* Clear the MagicPacket detection logic */
mpd_enable_set(priv, false);
@@ -1085,6 +1137,7 @@ static irqreturn_t bcm_sysport_rx_isr(int irq, void *dev_id)
struct bcm_sysport_priv *priv = netdev_priv(dev);
struct bcm_sysport_tx_ring *txr;
unsigned int ring, ring_bit;
+ u32 reg;
priv->irq0_stat = intrl2_0_readl(priv, INTRL2_CPU_STATUS) &
~intrl2_0_readl(priv, INTRL2_CPU_MASK_STATUS);
@@ -1111,7 +1164,14 @@ static irqreturn_t bcm_sysport_rx_isr(int irq, void *dev_id)
bcm_sysport_tx_reclaim_all(priv);
if (priv->irq0_stat & INTRL2_0_MPD)
- netdev_info(priv->netdev, "Wake-on-LAN interrupt!\n");
+ netdev_info(priv->netdev, "Wake-on-LAN (MPD) interrupt!\n");
+
+ if (priv->irq0_stat & INTRL2_0_BRCM_MATCH_TAG) {
+ reg = rxchk_readl(priv, RXCHK_BRCM_TAG_MATCH_STATUS) &
+ RXCHK_BRCM_TAG_MATCH_MASK;
+ netdev_info(priv->netdev,
+ "Wake-on-LAN (filters 0x%02x) interrupt!\n", reg);
+ }
if (!priv->is_lite)
goto out;
@@ -2434,16 +2494,39 @@ static int bcm_sysport_suspend_to_wol(struct bcm_sysport_priv *priv)
{
struct net_device *ndev = priv->netdev;
unsigned int timeout = 1000;
+ unsigned int index, i = 0;
u32 reg;
/* Password has already been programmed */
reg = umac_readl(priv, UMAC_MPD_CTRL);
- reg |= MPD_EN;
+ if (priv->wolopts & (WAKE_MAGIC | WAKE_MAGICSECURE))
+ reg |= MPD_EN;
reg &= ~PSW_EN;
if (priv->wolopts & WAKE_MAGICSECURE)
reg |= PSW_EN;
umac_writel(priv, reg, UMAC_MPD_CTRL);
+ if (priv->wolopts & WAKE_FILTER) {
+ /* Turn on ACPI matching to steal packets from RBUF */
+ reg = rbuf_readl(priv, RBUF_CONTROL);
+ if (priv->is_lite)
+ reg |= RBUF_ACPI_EN_LITE;
+ else
+ reg |= RBUF_ACPI_EN;
+ rbuf_writel(priv, reg, RBUF_CONTROL);
+
+ /* Enable RXCHK, active filters and Broadcom tag matching */
+ reg = rxchk_readl(priv, RXCHK_CONTROL);
+ reg &= ~(RXCHK_BRCM_TAG_MATCH_MASK <<
+ RXCHK_BRCM_TAG_MATCH_SHIFT);
+ for_each_set_bit(index, priv->filters, WAKE_FILTER_BITS) {
+ reg |= BIT(RXCHK_BRCM_TAG_MATCH_SHIFT + i);
+ i++;
+ }
+ reg |= RXCHK_EN | RXCHK_BRCM_TAG_EN;
+ rxchk_writel(priv, reg, RXCHK_CONTROL);
+ }
+
/* Make sure RBUF entered WoL mode as result */
do {
reg = rbuf_readl(priv, RBUF_STATUS);
@@ -2464,7 +2547,7 @@ static int bcm_sysport_suspend_to_wol(struct bcm_sysport_priv *priv)
umac_enable_set(priv, CMD_RX_EN, 1);
/* Enable the interrupt wake-up source */
- intrl2_0_mask_clear(priv, INTRL2_0_MPD);
+ intrl2_0_mask_clear(priv, INTRL2_0_MPD | INTRL2_0_BRCM_MATCH_TAG);
netif_dbg(priv, wol, ndev, "entered WOL mode\n");
diff --git a/drivers/net/ethernet/broadcom/bcmsysport.h b/drivers/net/ethernet/broadcom/bcmsysport.h
index d6e5d0cbf3a3..6a64bd8cf787 100644
--- a/drivers/net/ethernet/broadcom/bcmsysport.h
+++ b/drivers/net/ethernet/broadcom/bcmsysport.h
@@ -11,6 +11,8 @@
#ifndef __BCM_SYSPORT_H
#define __BCM_SYSPORT_H
+#include <linux/bitmap.h>
+#include <linux/ethtool.h>
#include <linux/if_vlan.h>
#include <linux/net_dim.h>
@@ -155,14 +157,18 @@ struct bcm_rsb {
#define RXCHK_PARSE_AUTH (1 << 22)
#define RXCHK_BRCM_TAG0 0x04
-#define RXCHK_BRCM_TAG(i) ((i) * RXCHK_BRCM_TAG0)
+#define RXCHK_BRCM_TAG(i) ((i) * 0x4 + RXCHK_BRCM_TAG0)
#define RXCHK_BRCM_TAG0_MASK 0x24
-#define RXCHK_BRCM_TAG_MASK(i) ((i) * RXCHK_BRCM_TAG0_MASK)
+#define RXCHK_BRCM_TAG_MASK(i) ((i) * 0x4 + RXCHK_BRCM_TAG0_MASK)
#define RXCHK_BRCM_TAG_MATCH_STATUS 0x44
#define RXCHK_ETHERTYPE 0x48
#define RXCHK_BAD_CSUM_CNTR 0x4C
#define RXCHK_OTHER_DISC_CNTR 0x50
+#define RXCHK_BRCM_TAG_MAX 8
+#define RXCHK_BRCM_TAG_CID_SHIFT 16
+#define RXCHK_BRCM_TAG_CID_MASK 0xff
+
/* TXCHCK offsets and defines */
#define SYS_PORT_TXCHK_OFFSET 0x380
#define TXCHK_PKT_RDY_THRESH 0x00
@@ -185,6 +191,7 @@ struct bcm_rsb {
#define RBUF_RSB_SWAP0 (1 << 22)
#define RBUF_RSB_SWAP1 (1 << 23)
#define RBUF_ACPI_EN (1 << 23)
+#define RBUF_ACPI_EN_LITE (1 << 24)
#define RBUF_PKT_RDY_THRESH 0x04
@@ -524,6 +531,8 @@ struct dma_desc {
#define WORDS_PER_DESC (sizeof(struct dma_desc) / sizeof(u32))
+#define WAKE_FILTER_BITS (SOPASS_MAX * BITS_PER_BYTE)
+
/* Rx/Tx common counter group.*/
struct bcm_sysport_pkt_counters {
u32 cnt_64; /* RO Received/Transmited 64 bytes packet */
@@ -776,6 +785,7 @@ struct bcm_sysport_priv {
/* Ethtool */
u32 msg_enable;
+ DECLARE_BITMAP(filters, SOPASS_MAX * BITS_PER_BYTE);
struct bcm_sysport_stats64 stats64;
--
2.14.1
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