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@ -32,6 +32,7 @@
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#include <linux/etherdevice.h>
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#include <linux/lockdep.h>
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#include <linux/ar8216_platform.h>
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#include <linux/workqueue.h>
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#include "ar8216.h"
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/* size of the vlan table */
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@ -39,9 +40,12 @@
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#define AR8X16_PROBE_RETRIES 10
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#define AR8X16_MAX_PORTS 8
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#define AR8XXX_MIB_WORK_DELAY 2000 /* msecs */
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struct ar8216_priv;
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#define AR8XXX_CAP_GIGE BIT(0)
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#define AR8XXX_CAP_GIGE BIT(0)
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#define AR8XXX_CAP_MIB_COUNTERS BIT(1)
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enum {
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AR8XXX_VER_AR8216 = 0x01,
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@ -50,6 +54,12 @@ enum {
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AR8XXX_VER_AR8327 = 0x12,
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};
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struct ar8xxx_mib_desc {
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unsigned int size;
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unsigned int offset;
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const char *name;
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};
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struct ar8xxx_chip {
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unsigned long caps;
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@ -62,6 +72,9 @@ struct ar8xxx_chip {
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int (*atu_flush)(struct ar8216_priv *priv);
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void (*vtu_flush)(struct ar8216_priv *priv);
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void (*vtu_load_vlan)(struct ar8216_priv *priv, u32 vid, u32 port_mask);
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const struct ar8xxx_mib_desc *mib_decs;
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unsigned num_mibs;
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};
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struct ar8216_priv {
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@ -77,11 +90,16 @@ struct ar8216_priv {
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const struct ar8xxx_chip *chip;
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bool initialized;
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bool port4_phy;
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char buf[80];
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char buf[2048];
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bool init;
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bool mii_lo_first;
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struct mutex mib_lock;
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struct delayed_work mib_work;
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int mib_next_port;
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u64 *mib_stats;
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/* all fields below are cleared on reset */
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bool vlan;
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u16 vlan_id[AR8X16_MAX_VLANS];
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@ -90,6 +108,55 @@ struct ar8216_priv {
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u16 pvid[AR8X16_MAX_PORTS];
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};
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#define MIB_DESC(_s , _o, _n) \
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{ \
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.size = (_s), \
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.offset = (_o), \
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.name = (_n), \
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}
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static const struct ar8xxx_mib_desc ar8236_mibs[] = {
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MIB_DESC(1, AR8216_STATS_RXBROAD, "RxBroad"),
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MIB_DESC(1, AR8216_STATS_RXPAUSE, "RxPause"),
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MIB_DESC(1, AR8216_STATS_RXMULTI, "RxMulti"),
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MIB_DESC(1, AR8216_STATS_RXFCSERR, "RxFcsErr"),
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MIB_DESC(1, AR8216_STATS_RXALIGNERR, "RxAlignErr"),
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MIB_DESC(1, AR8216_STATS_RXRUNT, "RxRunt"),
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MIB_DESC(1, AR8216_STATS_RXFRAGMENT, "RxFragment"),
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MIB_DESC(1, AR8216_STATS_RX64BYTE, "Rx64Byte"),
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MIB_DESC(1, AR8216_STATS_RX128BYTE, "Rx128Byte"),
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MIB_DESC(1, AR8216_STATS_RX256BYTE, "Rx256Byte"),
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MIB_DESC(1, AR8216_STATS_RX512BYTE, "Rx512Byte"),
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MIB_DESC(1, AR8216_STATS_RX1024BYTE, "Rx1024Byte"),
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MIB_DESC(1, AR8216_STATS_RX1518BYTE, "Rx1518Byte"),
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MIB_DESC(1, AR8216_STATS_RXMAXBYTE, "RxMaxByte"),
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MIB_DESC(1, AR8216_STATS_RXTOOLONG, "RxTooLong"),
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MIB_DESC(2, AR8216_STATS_RXGOODBYTE, "RxGoodByte"),
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MIB_DESC(2, AR8216_STATS_RXBADBYTE, "RxBadByte"),
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MIB_DESC(1, AR8216_STATS_RXOVERFLOW, "RxOverFlow"),
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MIB_DESC(1, AR8216_STATS_FILTERED, "Filtered"),
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MIB_DESC(1, AR8216_STATS_TXBROAD, "TxBroad"),
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MIB_DESC(1, AR8216_STATS_TXPAUSE, "TxPause"),
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MIB_DESC(1, AR8216_STATS_TXMULTI, "TxMulti"),
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MIB_DESC(1, AR8216_STATS_TXUNDERRUN, "TxUnderRun"),
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MIB_DESC(1, AR8216_STATS_TX64BYTE, "Tx64Byte"),
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MIB_DESC(1, AR8216_STATS_TX128BYTE, "Tx128Byte"),
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MIB_DESC(1, AR8216_STATS_TX256BYTE, "Tx256Byte"),
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MIB_DESC(1, AR8216_STATS_TX512BYTE, "Tx512Byte"),
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MIB_DESC(1, AR8216_STATS_TX1024BYTE, "Tx1024Byte"),
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MIB_DESC(1, AR8216_STATS_TX1518BYTE, "Tx1518Byte"),
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MIB_DESC(1, AR8216_STATS_TXMAXBYTE, "TxMaxByte"),
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MIB_DESC(1, AR8216_STATS_TXOVERSIZE, "TxOverSize"),
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MIB_DESC(2, AR8216_STATS_TXBYTE, "TxByte"),
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MIB_DESC(1, AR8216_STATS_TXCOLLISION, "TxCollision"),
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MIB_DESC(1, AR8216_STATS_TXABORTCOL, "TxAbortCol"),
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MIB_DESC(1, AR8216_STATS_TXMULTICOL, "TxMultiCol"),
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MIB_DESC(1, AR8216_STATS_TXSINGLECOL, "TxSingleCol"),
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MIB_DESC(1, AR8216_STATS_TXEXCDEFER, "TxExcDefer"),
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MIB_DESC(1, AR8216_STATS_TXDEFER, "TxDefer"),
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MIB_DESC(1, AR8216_STATS_TXLATECOL, "TxLateCol"),
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};
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#define to_ar8216(_dev) container_of(_dev, struct ar8216_priv, dev)
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static inline bool ar8xxx_has_gige(struct ar8216_priv *priv)
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@ -97,6 +164,11 @@ static inline bool ar8xxx_has_gige(struct ar8216_priv *priv)
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return priv->chip->caps & AR8XXX_CAP_GIGE;
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}
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static inline bool ar8xxx_has_mib_counters(struct ar8216_priv *priv)
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{
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return priv->chip->caps & AR8XXX_CAP_MIB_COUNTERS;
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}
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static inline bool chip_is_ar8216(struct ar8216_priv *priv)
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{
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return priv->chip_ver == AR8XXX_VER_AR8216;
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@ -217,6 +289,128 @@ ar8216_rmw(struct ar8216_priv *priv, int reg, u32 mask, u32 val)
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return v;
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}
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static inline void
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ar8216_reg_set(struct ar8216_priv *priv, int reg, u32 val)
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{
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u32 v;
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lockdep_assert_held(&priv->reg_mutex);
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v = priv->read(priv, reg);
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v |= val;
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priv->write(priv, reg, v);
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}
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static int
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ar8216_reg_wait(struct ar8216_priv *priv, u32 reg, u32 mask, u32 val,
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unsigned timeout)
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{
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int i;
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for (i = 0; i < timeout; i++) {
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u32 t;
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t = priv->read(priv, reg);
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if ((t & mask) == val)
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return 0;
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usleep_range(1000, 2000);
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}
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return -ETIMEDOUT;
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}
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static int
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ar8216_mib_capture(struct ar8216_priv *priv)
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{
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unsigned mib_func;
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int ret;
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lockdep_assert_held(&priv->mib_lock);
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if (chip_is_ar8327(priv))
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mib_func = AR8327_REG_MIB_FUNC;
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else
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mib_func = AR8216_REG_MIB_FUNC;
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/* Capture the hardware statistics for all ports */
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ar8216_rmw(priv, mib_func, AR8216_MIB_FUNC,
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(AR8216_MIB_FUNC_CAPTURE << AR8216_MIB_FUNC_S));
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/* Wait for the capturing to complete. */
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ret = ar8216_reg_wait(priv, mib_func, AR8216_MIB_BUSY, 0, 10);
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if (ret)
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goto out;
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ret = 0;
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out:
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return ret;
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}
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static int
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ar8216_mib_flush(struct ar8216_priv *priv)
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{
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unsigned mib_func;
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int ret;
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lockdep_assert_held(&priv->mib_lock);
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if (chip_is_ar8327(priv))
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mib_func = AR8327_REG_MIB_FUNC;
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else
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mib_func = AR8216_REG_MIB_FUNC;
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/* Flush hardware statistics for all ports */
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ar8216_rmw(priv, mib_func, AR8216_MIB_FUNC,
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(AR8216_MIB_FUNC_FLUSH << AR8216_MIB_FUNC_S));
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/* Wait for the capturing to complete. */
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ret = ar8216_reg_wait(priv, mib_func, AR8216_MIB_BUSY, 0, 10);
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if (ret)
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goto out;
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ret = 0;
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out:
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return ret;
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}
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static void
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ar8216_mib_fetch_port_stat(struct ar8216_priv *priv, int port, bool flush)
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{
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unsigned int base;
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u64 *mib_stats;
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int i;
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lockdep_assert_held(&priv->mib_lock);
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if (chip_is_ar8327(priv))
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base = AR8327_REG_PORT_STATS_BASE(port);
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else
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base = AR8216_REG_PORT_STATS_BASE(port);
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mib_stats = &priv->mib_stats[port * priv->chip->num_mibs];
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for (i = 0; i < priv->chip->num_mibs; i++) {
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const struct ar8xxx_mib_desc *mib;
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u64 t;
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mib = &priv->chip->mib_decs[i];
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t = priv->read(priv, base + mib->offset);
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if (mib->size == 2) {
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u64 hi;
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hi = priv->read(priv, base + mib->offset + 4);
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t |= hi << 32;
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}
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if (flush)
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mib_stats[i] = 0;
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else
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mib_stats[i] += t;
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}
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}
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static void
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ar8216_read_port_link(struct ar8216_priv *priv, int port,
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struct switch_port_link *link)
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@ -527,9 +721,15 @@ ar8236_init_globals(struct ar8216_priv *priv)
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/* enable jumbo frames */
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ar8216_rmw(priv, AR8216_REG_GLOBAL_CTRL,
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AR8316_GCTRL_MTU, 9018 + 8 + 2);
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/* Enable MIB counters */
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ar8216_rmw(priv, AR8216_REG_MIB_FUNC, AR8216_MIB_FUNC | AR8236_MIB_EN,
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(AR8216_MIB_FUNC_NO_OP << AR8216_MIB_FUNC_S) |
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AR8236_MIB_EN);
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}
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static const struct ar8xxx_chip ar8236_chip = {
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.caps = AR8XXX_CAP_MIB_COUNTERS,
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.hw_init = ar8236_hw_init,
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.init_globals = ar8236_init_globals,
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.init_port = ar8216_init_port,
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@ -538,6 +738,9 @@ static const struct ar8xxx_chip ar8236_chip = {
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.atu_flush = ar8216_atu_flush,
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.vtu_flush = ar8216_vtu_flush,
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.vtu_load_vlan = ar8216_vtu_load_vlan,
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.num_mibs = ARRAY_SIZE(ar8236_mibs),
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.mib_decs = ar8236_mibs,
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};
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static int
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@ -612,10 +815,15 @@ ar8316_init_globals(struct ar8216_priv *priv)
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/* enable jumbo frames */
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ar8216_rmw(priv, AR8216_REG_GLOBAL_CTRL,
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AR8316_GCTRL_MTU, 9018 + 8 + 2);
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/* Enable MIB counters */
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ar8216_rmw(priv, AR8216_REG_MIB_FUNC, AR8216_MIB_FUNC | AR8236_MIB_EN,
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(AR8216_MIB_FUNC_NO_OP << AR8216_MIB_FUNC_S) |
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AR8236_MIB_EN);
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}
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static const struct ar8xxx_chip ar8316_chip = {
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.caps = AR8XXX_CAP_GIGE,
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.caps = AR8XXX_CAP_GIGE | AR8XXX_CAP_MIB_COUNTERS,
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.hw_init = ar8316_hw_init,
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.init_globals = ar8316_init_globals,
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.init_port = ar8216_init_port,
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@ -624,6 +832,9 @@ static const struct ar8xxx_chip ar8316_chip = {
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.atu_flush = ar8216_atu_flush,
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.vtu_flush = ar8216_vtu_flush,
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.vtu_load_vlan = ar8216_vtu_load_vlan,
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.num_mibs = ARRAY_SIZE(ar8236_mibs),
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.mib_decs = ar8236_mibs,
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};
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static u32
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@ -807,6 +1018,10 @@ ar8327_init_globals(struct ar8216_priv *priv)
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/* setup MTU */
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ar8216_rmw(priv, AR8327_REG_MAX_FRAME_SIZE,
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AR8327_MAX_FRAME_SIZE_MTU, 1518 + 8 + 2);
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/* Enable MIB counters */
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ar8216_reg_set(priv, AR8327_REG_MODULE_EN,
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AR8327_MODULE_EN_MIB);
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}
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static void
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@ -972,7 +1187,7 @@ ar8327_setup_port(struct ar8216_priv *priv, int port, u32 egress, u32 ingress,
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}
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static const struct ar8xxx_chip ar8327_chip = {
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.caps = AR8XXX_CAP_GIGE,
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.caps = AR8XXX_CAP_GIGE | AR8XXX_CAP_MIB_COUNTERS,
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.hw_init = ar8327_hw_init,
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.init_globals = ar8327_init_globals,
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.init_port = ar8327_init_port,
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@ -981,6 +1196,9 @@ static const struct ar8xxx_chip ar8327_chip = {
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.atu_flush = ar8327_atu_flush,
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.vtu_flush = ar8327_vtu_flush,
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.vtu_load_vlan = ar8327_vtu_load_vlan,
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.num_mibs = ARRAY_SIZE(ar8236_mibs),
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.mib_decs = ar8236_mibs,
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};
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static int
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@ -1197,6 +1415,113 @@ ar8216_sw_reset_switch(struct switch_dev *dev)
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return ar8216_sw_hw_apply(dev);
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}
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static int
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ar8216_sw_set_reset_mibs(struct switch_dev *dev,
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const struct switch_attr *attr,
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struct switch_val *val)
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{
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struct ar8216_priv *priv = to_ar8216(dev);
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unsigned int len;
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int ret;
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if (!ar8xxx_has_mib_counters(priv))
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return -EOPNOTSUPP;
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mutex_lock(&priv->mib_lock);
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len = priv->dev.ports * priv->chip->num_mibs *
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sizeof(*priv->mib_stats);
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memset(priv->mib_stats, '\0', len);
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ret = ar8216_mib_flush(priv);
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if (ret)
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goto unlock;
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ret = 0;
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unlock:
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mutex_unlock(&priv->mib_lock);
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return ret;
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}
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static int
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ar8216_sw_set_port_reset_mib(struct switch_dev *dev,
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const struct switch_attr *attr,
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struct switch_val *val)
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{
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struct ar8216_priv *priv = to_ar8216(dev);
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int port;
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int ret;
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if (!ar8xxx_has_mib_counters(priv))
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return -EOPNOTSUPP;
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port = val->port_vlan;
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if (port >= dev->ports)
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return -EINVAL;
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mutex_lock(&priv->mib_lock);
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ret = ar8216_mib_capture(priv);
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if (ret)
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goto unlock;
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ar8216_mib_fetch_port_stat(priv, port, true);
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ret = 0;
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unlock:
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mutex_unlock(&priv->mib_lock);
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return ret;
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}
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static int
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ar8216_sw_get_port_mib(struct switch_dev *dev,
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const struct switch_attr *attr,
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struct switch_val *val)
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{
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struct ar8216_priv *priv = to_ar8216(dev);
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const struct ar8xxx_chip *chip = priv->chip;
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u64 *mib_stats;
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int port;
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int ret;
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char *buf = priv->buf;
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int i, len = 0;
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if (!ar8xxx_has_mib_counters(priv))
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return -EOPNOTSUPP;
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port = val->port_vlan;
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if (port >= dev->ports)
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return -EINVAL;
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mutex_lock(&priv->mib_lock);
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ret = ar8216_mib_capture(priv);
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if (ret)
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goto unlock;
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ar8216_mib_fetch_port_stat(priv, port, false);
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mutex_unlock(&priv->mib_lock);
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len += snprintf(buf + len, sizeof(priv->buf) - len,
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"Port %d MIB counters\n",
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port);
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mib_stats = &priv->mib_stats[port * chip->num_mibs];
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for (i = 0; i < chip->num_mibs; i++)
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len += snprintf(buf + len, sizeof(priv->buf) - len,
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"%-12s: %llu\n",
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chip->mib_decs[i].name,
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mib_stats[i]);
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val->value.s = buf;
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val->len = len;
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ret = 0;
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unlock:
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mutex_unlock(&priv->mib_lock);
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return ret;
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}
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static struct switch_attr ar8216_globals[] = {
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{
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.type = SWITCH_TYPE_INT,
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@ -1206,9 +1531,29 @@ static struct switch_attr ar8216_globals[] = {
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.get = ar8216_sw_get_vlan,
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.max = 1
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},
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{
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.type = SWITCH_TYPE_NOVAL,
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.name = "reset_mibs",
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.description = "Reset all MIB counters",
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.set = ar8216_sw_set_reset_mibs,
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},
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};
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static struct switch_attr ar8216_port[] = {
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{
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.type = SWITCH_TYPE_NOVAL,
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.name = "reset_mib",
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.description = "Reset single port MIB counters",
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.set = ar8216_sw_set_port_reset_mib,
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},
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{
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.type = SWITCH_TYPE_STRING,
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.name = "mib",
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.description = "Get port's MIB counters",
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.set = NULL,
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.get = ar8216_sw_get_port_mib,
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},
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};
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static struct switch_attr ar8216_vlan[] = {
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@ -1298,6 +1643,75 @@ ar8216_id_chip(struct ar8216_priv *priv)
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return 0;
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}
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static void
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ar8xxx_mib_work_func(struct work_struct *work)
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{
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struct ar8216_priv *priv;
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int err;
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priv = container_of(work, struct ar8216_priv, mib_work.work);
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mutex_lock(&priv->mib_lock);
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err = ar8216_mib_capture(priv);
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if (err)
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goto next_port;
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ar8216_mib_fetch_port_stat(priv, priv->mib_next_port, false);
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next_port:
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priv->mib_next_port++;
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if (priv->mib_next_port > priv->dev.ports)
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priv->mib_next_port = 0;
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mutex_unlock(&priv->mib_lock);
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schedule_delayed_work(&priv->mib_work,
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msecs_to_jiffies(AR8XXX_MIB_WORK_DELAY));
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}
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static int
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ar8xxx_mib_init(struct ar8216_priv *priv)
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{
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unsigned int len;
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if (!ar8xxx_has_mib_counters(priv))
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return 0;
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BUG_ON(!priv->chip->mib_decs || !priv->chip->num_mibs);
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len = priv->dev.ports * priv->chip->num_mibs *
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sizeof(*priv->mib_stats);
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priv->mib_stats = kzalloc(len, GFP_KERNEL);
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if (!priv->mib_stats)
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return -ENOMEM;
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mutex_init(&priv->mib_lock);
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INIT_DELAYED_WORK(&priv->mib_work, ar8xxx_mib_work_func);
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return 0;
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}
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static void
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ar8xxx_mib_start(struct ar8216_priv *priv)
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{
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if (!ar8xxx_has_mib_counters(priv))
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return;
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schedule_delayed_work(&priv->mib_work,
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msecs_to_jiffies(AR8XXX_MIB_WORK_DELAY));
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}
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static void
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ar8xxx_mib_cleanup(struct ar8216_priv *priv)
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{
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if (!ar8xxx_has_mib_counters(priv))
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return;
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cancel_delayed_work(&priv->mib_work);
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kfree(priv->mib_stats);
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}
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static int
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ar8216_config_init(struct phy_device *pdev)
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{
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@ -1392,10 +1806,14 @@ ar8216_config_init(struct phy_device *pdev)
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swdev->vlans = AR8216_NUM_VLANS;
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}
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ret = register_switch(&priv->dev, pdev->attached_dev);
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ret = ar8xxx_mib_init(priv);
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if (ret)
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goto err_free_priv;
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ret = register_switch(&priv->dev, pdev->attached_dev);
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if (ret)
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goto err_cleanup_mib;
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printk(KERN_INFO "%s: %s switch driver attached.\n",
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pdev->attached_dev->name, swdev->name);
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@ -1403,11 +1821,11 @@ ar8216_config_init(struct phy_device *pdev)
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ret = priv->chip->hw_init(priv);
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if (ret)
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goto err_free_priv;
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goto err_cleanup_mib;
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ret = ar8216_sw_reset_switch(&priv->dev);
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if (ret)
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goto err_free_priv;
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goto err_cleanup_mib;
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dev->phy_ptr = priv;
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@ -1420,8 +1838,12 @@ ar8216_config_init(struct phy_device *pdev)
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priv->init = false;
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ar8xxx_mib_start(priv);
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return 0;
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err_cleanup_mib:
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ar8xxx_mib_cleanup(priv);
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err_free_priv:
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kfree(priv);
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return ret;
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@ -1511,6 +1933,8 @@ ar8216_remove(struct phy_device *pdev)
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if (pdev->addr == 0)
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unregister_switch(&priv->dev);
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ar8xxx_mib_cleanup(priv);
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kfree(priv);
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}
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