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Date: Fri, 27 Jan 2012 21:54:12 +0100
From: Francois Romieu <romieu@...zoreil.com>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org, Hayes Wang <hayeswang@...ltek.com>
Subject: [PATCH net-next 0/7] Pull request for r8169 branch
Please pull from branch 'davem-next.r8169' in repository
git://violet.fr.zoreil.com/romieu/linux davem-next.r8169
to get the changes below.
Distance from 'davem-next' (a7563f342db6490e66dbf2c8a50577a72a158c9a)
---------------------------------------------------------------------
da78dbff2e05630921c551dbbc70a4b7981a8fff
1e874e041fc7c222cbd85b20c4406070be1f687a
9085cdfa2f9f04d8678465748e2cced6e3f02e26
3e990ff5f119c2f9b142f3e2548dc90ca9b7dfa1
4422bcd4907d1bbb9f63e049e3c3819132c047a1
209e5ac83b4d038ffb52cabc793f75031602a031
4512ff9f361a2786a18cb805d1f64b8d8719f121
Diffstat
--------
drivers/net/ethernet/realtek/r8169.c | 558 ++++++++++++++++++----------------
1 files changed, 288 insertions(+), 270 deletions(-)
Shortlog
--------
Francois Romieu (7):
r8169: remove hardcoded PCIe registers accesses.
r8169: remove rtl8169_reinit_task.
r8169: stop delaying workqueue.
r8169: factor out IntrMask writes.
r8169: irq mask helpers.
r8169: missing barriers.
r8169: remove work from irq handler.
Patch
-----
diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c
index 7a0c800..d039d39 100644
--- a/drivers/net/ethernet/realtek/r8169.c
+++ b/drivers/net/ethernet/realtek/r8169.c
@@ -667,6 +667,13 @@ struct rtl8169_counters {
__le16 tx_underun;
};
+enum rtl_flag {
+ RTL_FLAG_TASK_SLOW_PENDING,
+ RTL_FLAG_TASK_RESET_PENDING,
+ RTL_FLAG_TASK_PHY_PENDING,
+ RTL_FLAG_MAX
+};
+
struct rtl8169_private {
void __iomem *mmio_addr; /* memory map physical address */
struct pci_dev *pci_dev;
@@ -688,9 +695,8 @@ struct rtl8169_private {
struct ring_info tx_skb[NUM_TX_DESC]; /* Tx data buffers */
struct timer_list timer;
u16 cp_cmd;
- u16 intr_event;
- u16 napi_event;
- u16 intr_mask;
+
+ u16 event_slow;
struct mdio_ops {
void (*write)(void __iomem *, int, int);
@@ -714,7 +720,14 @@ struct rtl8169_private {
unsigned int (*phy_reset_pending)(struct rtl8169_private *tp);
unsigned int (*link_ok)(void __iomem *);
int (*do_ioctl)(struct rtl8169_private *tp, struct mii_ioctl_data *data, int cmd);
- struct delayed_work task;
+
+ struct {
+ DECLARE_BITMAP(flags, RTL_FLAG_MAX);
+ struct mutex mutex;
+ struct work_struct work;
+ bool enabled;
+ } wk;
+
unsigned features;
struct mii_if_info mii;
@@ -764,13 +777,20 @@ static int rtl8169_close(struct net_device *dev);
static void rtl_set_rx_mode(struct net_device *dev);
static void rtl8169_tx_timeout(struct net_device *dev);
static struct net_device_stats *rtl8169_get_stats(struct net_device *dev);
-static int rtl8169_rx_interrupt(struct net_device *, struct rtl8169_private *,
- void __iomem *, u32 budget);
static int rtl8169_change_mtu(struct net_device *dev, int new_mtu);
-static void rtl8169_down(struct net_device *dev);
static void rtl8169_rx_clear(struct rtl8169_private *tp);
static int rtl8169_poll(struct napi_struct *napi, int budget);
+static void rtl_lock_work(struct rtl8169_private *tp)
+{
+ mutex_lock(&tp->wk.mutex);
+}
+
+static void rtl_unlock_work(struct rtl8169_private *tp)
+{
+ mutex_unlock(&tp->wk.mutex);
+}
+
static void rtl_tx_performance_tweak(struct pci_dev *pdev, u16 force)
{
int cap = pci_pcie_cap(pdev);
@@ -1180,12 +1200,51 @@ static u8 rtl8168d_efuse_read(void __iomem *ioaddr, int reg_addr)
return value;
}
+static u16 rtl_get_events(struct rtl8169_private *tp)
+{
+ void __iomem *ioaddr = tp->mmio_addr;
+
+ return RTL_R16(IntrStatus);
+}
+
+static void rtl_ack_events(struct rtl8169_private *tp, u16 bits)
+{
+ void __iomem *ioaddr = tp->mmio_addr;
+
+ RTL_W16(IntrStatus, bits);
+ mmiowb();
+}
+
+static void rtl_irq_disable(struct rtl8169_private *tp)
+{
+ void __iomem *ioaddr = tp->mmio_addr;
+
+ RTL_W16(IntrMask, 0);
+ mmiowb();
+}
+
+static void rtl_irq_enable(struct rtl8169_private *tp, u16 bits)
+{
+ void __iomem *ioaddr = tp->mmio_addr;
+
+ RTL_W16(IntrMask, bits);
+}
+
+#define RTL_EVENT_NAPI_RX (RxOK | RxErr)
+#define RTL_EVENT_NAPI_TX (TxOK | TxErr)
+#define RTL_EVENT_NAPI (RTL_EVENT_NAPI_RX | RTL_EVENT_NAPI_TX)
+
+static void rtl_irq_enable_all(struct rtl8169_private *tp)
+{
+ rtl_irq_enable(tp, RTL_EVENT_NAPI | tp->event_slow);
+}
+
static void rtl8169_irq_mask_and_ack(struct rtl8169_private *tp)
{
void __iomem *ioaddr = tp->mmio_addr;
- RTL_W16(IntrMask, 0x0000);
- RTL_W16(IntrStatus, tp->intr_event);
+ rtl_irq_disable(tp);
+ rtl_ack_events(tp, RTL_EVENT_NAPI | tp->event_slow);
RTL_R8(ChipCmd);
}
@@ -1276,9 +1335,6 @@ static void __rtl8169_check_link_status(struct net_device *dev,
struct rtl8169_private *tp,
void __iomem *ioaddr, bool pm)
{
- unsigned long flags;
-
- spin_lock_irqsave(&tp->lock, flags);
if (tp->link_ok(ioaddr)) {
rtl_link_chg_patch(tp);
/* This is to cancel a scheduled suspend if there's one. */
@@ -1293,7 +1349,6 @@ static void __rtl8169_check_link_status(struct net_device *dev,
if (pm)
pm_schedule_suspend(&tp->pci_dev->dev, 5000);
}
- spin_unlock_irqrestore(&tp->lock, flags);
}
static void rtl8169_check_link_status(struct net_device *dev,
@@ -1336,12 +1391,12 @@ static void rtl8169_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
{
struct rtl8169_private *tp = netdev_priv(dev);
- spin_lock_irq(&tp->lock);
+ rtl_lock_work(tp);
wol->supported = WAKE_ANY;
wol->wolopts = __rtl8169_get_wol(tp);
- spin_unlock_irq(&tp->lock);
+ rtl_unlock_work(tp);
}
static void __rtl8169_set_wol(struct rtl8169_private *tp, u32 wolopts)
@@ -1378,14 +1433,15 @@ static int rtl8169_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
{
struct rtl8169_private *tp = netdev_priv(dev);
- spin_lock_irq(&tp->lock);
+ rtl_lock_work(tp);
if (wol->wolopts)
tp->features |= RTL_FEATURE_WOL;
else
tp->features &= ~RTL_FEATURE_WOL;
__rtl8169_set_wol(tp, wol->wolopts);
- spin_unlock_irq(&tp->lock);
+
+ rtl_unlock_work(tp);
device_set_wakeup_enable(&tp->pci_dev->dev, wol->wolopts);
@@ -1540,15 +1596,14 @@ out:
static int rtl8169_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
struct rtl8169_private *tp = netdev_priv(dev);
- unsigned long flags;
int ret;
del_timer_sync(&tp->timer);
- spin_lock_irqsave(&tp->lock, flags);
+ rtl_lock_work(tp);
ret = rtl8169_set_speed(dev, cmd->autoneg, ethtool_cmd_speed(cmd),
cmd->duplex, cmd->advertising);
- spin_unlock_irqrestore(&tp->lock, flags);
+ rtl_unlock_work(tp);
return ret;
}
@@ -1568,14 +1623,12 @@ static netdev_features_t rtl8169_fix_features(struct net_device *dev,
return features;
}
-static int rtl8169_set_features(struct net_device *dev,
- netdev_features_t features)
+static void __rtl8169_set_features(struct net_device *dev,
+ netdev_features_t features)
{
struct rtl8169_private *tp = netdev_priv(dev);
- void __iomem *ioaddr = tp->mmio_addr;
- unsigned long flags;
- spin_lock_irqsave(&tp->lock, flags);
+ void __iomem *ioaddr = tp->mmio_addr;
if (features & NETIF_F_RXCSUM)
tp->cp_cmd |= RxChkSum;
@@ -1589,12 +1642,21 @@ static int rtl8169_set_features(struct net_device *dev,
RTL_W16(CPlusCmd, tp->cp_cmd);
RTL_R16(CPlusCmd);
+}
+
+static int rtl8169_set_features(struct net_device *dev,
+ netdev_features_t features)
+{
+ struct rtl8169_private *tp = netdev_priv(dev);
- spin_unlock_irqrestore(&tp->lock, flags);
+ rtl_lock_work(tp);
+ __rtl8169_set_features(dev, features);
+ rtl_unlock_work(tp);
return 0;
}
+
static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
struct sk_buff *skb)
{
@@ -1643,14 +1705,12 @@ static int rtl8169_gset_xmii(struct net_device *dev, struct ethtool_cmd *cmd)
static int rtl8169_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
struct rtl8169_private *tp = netdev_priv(dev);
- unsigned long flags;
int rc;
- spin_lock_irqsave(&tp->lock, flags);
-
+ rtl_lock_work(tp);
rc = tp->get_settings(dev, cmd);
+ rtl_unlock_work(tp);
- spin_unlock_irqrestore(&tp->lock, flags);
return rc;
}
@@ -1658,14 +1718,15 @@ static void rtl8169_get_regs(struct net_device *dev, struct ethtool_regs *regs,
void *p)
{
struct rtl8169_private *tp = netdev_priv(dev);
- unsigned long flags;
if (regs->len > R8169_REGS_SIZE)
regs->len = R8169_REGS_SIZE;
- spin_lock_irqsave(&tp->lock, flags);
+ rtl_lock_work(tp);
+ spin_lock_bh(&tp->lock);
memcpy_fromio(p, tp->mmio_addr, regs->len);
- spin_unlock_irqrestore(&tp->lock, flags);
+ spin_unlock_bh(&tp->lock);
+ rtl_unlock_work(tp);
}
static u32 rtl8169_get_msglevel(struct net_device *dev)
@@ -3182,18 +3243,14 @@ static void rtl_hw_phy_config(struct net_device *dev)
}
}
-static void rtl8169_phy_timer(unsigned long __opaque)
+static void rtl_phy_work(struct rtl8169_private *tp)
{
- struct net_device *dev = (struct net_device *)__opaque;
- struct rtl8169_private *tp = netdev_priv(dev);
struct timer_list *timer = &tp->timer;
void __iomem *ioaddr = tp->mmio_addr;
unsigned long timeout = RTL8169_PHY_TIMEOUT;
assert(tp->mac_version > RTL_GIGA_MAC_VER_01);
- spin_lock_irq(&tp->lock);
-
if (tp->phy_reset_pending(tp)) {
/*
* A busy loop could burn quite a few cycles on nowadays CPU.
@@ -3204,32 +3261,45 @@ static void rtl8169_phy_timer(unsigned long __opaque)
}
if (tp->link_ok(ioaddr))
- goto out_unlock;
+ return;
- netif_warn(tp, link, dev, "PHY reset until link up\n");
+ netif_warn(tp, link, tp->dev, "PHY reset until link up\n");
tp->phy_reset_enable(tp);
out_mod_timer:
mod_timer(timer, jiffies + timeout);
-out_unlock:
- spin_unlock_irq(&tp->lock);
+}
+
+static void rtl_schedule_task(struct rtl8169_private *tp, enum rtl_flag flag)
+{
+ spin_lock(&tp->lock);
+ if (!test_and_set_bit(flag, tp->wk.flags))
+ schedule_work(&tp->wk.work);
+ spin_unlock(&tp->lock);
+}
+
+static void rtl_schedule_task_bh(struct rtl8169_private *tp, enum rtl_flag flag)
+{
+ local_bh_disable();
+ rtl_schedule_task(tp, flag);
+ local_bh_enable();
+}
+
+static void rtl8169_phy_timer(unsigned long __opaque)
+{
+ struct net_device *dev = (struct net_device *)__opaque;
+ struct rtl8169_private *tp = netdev_priv(dev);
+
+ rtl_schedule_task_bh(tp, RTL_FLAG_TASK_PHY_PENDING);
}
#ifdef CONFIG_NET_POLL_CONTROLLER
-/*
- * Polling 'interrupt' - used by things like netconsole to send skbs
- * without having to re-enable interrupts. It's not called while
- * the interrupt routine is executing.
- */
static void rtl8169_netpoll(struct net_device *dev)
{
struct rtl8169_private *tp = netdev_priv(dev);
- struct pci_dev *pdev = tp->pci_dev;
- disable_irq(pdev->irq);
- rtl8169_interrupt(pdev->irq, dev);
- enable_irq(pdev->irq);
+ rtl8169_interrupt(tp->pci_dev->irq, dev);
}
#endif
@@ -3310,7 +3380,7 @@ static void rtl_rar_set(struct rtl8169_private *tp, u8 *addr)
low = addr[0] | (addr[1] << 8) | (addr[2] << 16) | (addr[3] << 24);
high = addr[4] | (addr[5] << 8);
- spin_lock_irq(&tp->lock);
+ rtl_lock_work(tp);
RTL_W8(Cfg9346, Cfg9346_Unlock);
@@ -3334,7 +3404,7 @@ static void rtl_rar_set(struct rtl8169_private *tp, u8 *addr)
RTL_W8(Cfg9346, Cfg9346_Lock);
- spin_unlock_irq(&tp->lock);
+ rtl_unlock_work(tp);
}
static int rtl_set_mac_address(struct net_device *dev, void *p)
@@ -3388,8 +3458,7 @@ static const struct rtl_cfg_info {
void (*hw_start)(struct net_device *);
unsigned int region;
unsigned int align;
- u16 intr_event;
- u16 napi_event;
+ u16 event_slow;
unsigned features;
u8 default_ver;
} rtl_cfg_infos [] = {
@@ -3397,9 +3466,7 @@ static const struct rtl_cfg_info {
.hw_start = rtl_hw_start_8169,
.region = 1,
.align = 0,
- .intr_event = SYSErr | LinkChg | RxOverflow |
- RxFIFOOver | TxErr | TxOK | RxOK | RxErr,
- .napi_event = RxFIFOOver | TxErr | TxOK | RxOK | RxOverflow,
+ .event_slow = SYSErr | LinkChg | RxOverflow | RxFIFOOver,
.features = RTL_FEATURE_GMII,
.default_ver = RTL_GIGA_MAC_VER_01,
},
@@ -3407,9 +3474,7 @@ static const struct rtl_cfg_info {
.hw_start = rtl_hw_start_8168,
.region = 2,
.align = 8,
- .intr_event = SYSErr | LinkChg | RxOverflow |
- TxErr | TxOK | RxOK | RxErr,
- .napi_event = TxErr | TxOK | RxOK | RxOverflow,
+ .event_slow = SYSErr | LinkChg | RxOverflow,
.features = RTL_FEATURE_GMII | RTL_FEATURE_MSI,
.default_ver = RTL_GIGA_MAC_VER_11,
},
@@ -3417,9 +3482,8 @@ static const struct rtl_cfg_info {
.hw_start = rtl_hw_start_8101,
.region = 2,
.align = 8,
- .intr_event = SYSErr | LinkChg | RxOverflow | PCSTimeout |
- RxFIFOOver | TxErr | TxOK | RxOK | RxErr,
- .napi_event = RxFIFOOver | TxErr | TxOK | RxOK | RxOverflow,
+ .event_slow = SYSErr | LinkChg | RxOverflow | RxFIFOOver |
+ PCSTimeout,
.features = RTL_FEATURE_MSI,
.default_ver = RTL_GIGA_MAC_VER_13,
}
@@ -3824,23 +3888,21 @@ static void r8168dp_hw_jumbo_disable(struct rtl8169_private *tp)
static void r8168e_hw_jumbo_enable(struct rtl8169_private *tp)
{
void __iomem *ioaddr = tp->mmio_addr;
- struct pci_dev *pdev = tp->pci_dev;
RTL_W8(MaxTxPacketSize, 0x3f);
RTL_W8(Config3, RTL_R8(Config3) | Jumbo_En0);
RTL_W8(Config4, RTL_R8(Config4) | 0x01);
- pci_write_config_byte(pdev, 0x79, 0x20);
+ rtl_tx_performance_tweak(tp->pci_dev, 0x2 << MAX_READ_REQUEST_SHIFT);
}
static void r8168e_hw_jumbo_disable(struct rtl8169_private *tp)
{
void __iomem *ioaddr = tp->mmio_addr;
- struct pci_dev *pdev = tp->pci_dev;
RTL_W8(MaxTxPacketSize, 0x0c);
RTL_W8(Config3, RTL_R8(Config3) & ~Jumbo_En0);
RTL_W8(Config4, RTL_R8(Config4) & ~0x01);
- pci_write_config_byte(pdev, 0x79, 0x50);
+ rtl_tx_performance_tweak(tp->pci_dev, 0x5 << MAX_READ_REQUEST_SHIFT);
}
static void r8168b_0_hw_jumbo_enable(struct rtl8169_private *tp)
@@ -4048,11 +4110,11 @@ rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
rtl_init_rxcfg(tp);
- RTL_W16(IntrMask, 0x0000);
+ rtl_irq_disable(tp);
rtl_hw_reset(tp);
- RTL_W16(IntrStatus, 0xffff);
+ rtl_ack_events(tp, 0xffff);
pci_set_master(pdev);
@@ -4099,6 +4161,7 @@ rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
}
spin_lock_init(&tp->lock);
+ mutex_init(&tp->wk.mutex);
/* Get MAC address */
for (i = 0; i < ETH_ALEN; i++)
@@ -4126,10 +4189,8 @@ rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
/* 8110SCd requires hardware Rx VLAN - disallow toggling */
dev->hw_features &= ~NETIF_F_HW_VLAN_RX;
- tp->intr_mask = 0xffff;
tp->hw_start = cfg->hw_start;
- tp->intr_event = cfg->intr_event;
- tp->napi_event = cfg->napi_event;
+ tp->event_slow = cfg->event_slow;
tp->opts1_mask = (tp->mac_version != RTL_GIGA_MAC_VER_01) ?
~(RxBOVF | RxFOVF) : ~0;
@@ -4196,7 +4257,7 @@ static void __devexit rtl8169_remove_one(struct pci_dev *pdev)
rtl8168_driver_stop(tp);
}
- cancel_delayed_work_sync(&tp->task);
+ cancel_work_sync(&tp->wk.work);
unregister_netdev(dev);
@@ -4257,6 +4318,8 @@ static void rtl_request_firmware(struct rtl8169_private *tp)
rtl_request_uncached_firmware(tp);
}
+static void rtl_task(struct work_struct *);
+
static int rtl8169_open(struct net_device *dev)
{
struct rtl8169_private *tp = netdev_priv(dev);
@@ -4284,7 +4347,7 @@ static int rtl8169_open(struct net_device *dev)
if (retval < 0)
goto err_free_rx_1;
- INIT_DELAYED_WORK(&tp->task, NULL);
+ INIT_WORK(&tp->wk.work, rtl_task);
smp_mb();
@@ -4296,16 +4359,24 @@ static int rtl8169_open(struct net_device *dev)
if (retval < 0)
goto err_release_fw_2;
+ rtl_lock_work(tp);
+
+ tp->wk.enabled = true;
+
napi_enable(&tp->napi);
rtl8169_init_phy(dev, tp);
- rtl8169_set_features(dev, dev->features);
+ __rtl8169_set_features(dev, dev->features);
rtl_pll_power_up(tp);
rtl_hw_start(dev);
+ netif_start_queue(dev);
+
+ rtl_unlock_work(tp);
+
tp->saved_wolopts = 0;
pm_runtime_put_noidle(&pdev->dev);
@@ -4379,7 +4450,7 @@ static void rtl_hw_start(struct net_device *dev)
tp->hw_start(dev);
- netif_start_queue(dev);
+ rtl_irq_enable_all(tp);
}
static void rtl_set_rx_tx_desc_registers(struct rtl8169_private *tp,
@@ -4506,9 +4577,6 @@ static void rtl_hw_start_8169(struct net_device *dev)
/* no early-rx interrupts */
RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000);
-
- /* Enable all known interrupts by setting the interrupt mask. */
- RTL_W16(IntrMask, tp->intr_event);
}
static void rtl_csi_access_enable(void __iomem *ioaddr, u32 bits)
@@ -4888,8 +4956,8 @@ static void rtl_hw_start_8168(struct net_device *dev)
/* Work around for RxFIFO overflow. */
if (tp->mac_version == RTL_GIGA_MAC_VER_11) {
- tp->intr_event |= RxFIFOOver | PCSTimeout;
- tp->intr_event &= ~RxOverflow;
+ tp->event_slow |= RxFIFOOver | PCSTimeout;
+ tp->event_slow &= ~RxOverflow;
}
rtl_set_rx_tx_desc_registers(tp, ioaddr);
@@ -4977,8 +5045,6 @@ static void rtl_hw_start_8168(struct net_device *dev)
RTL_W8(Cfg9346, Cfg9346_Lock);
RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000);
-
- RTL_W16(IntrMask, tp->intr_event);
}
#define R810X_CPCMD_QUIRK_MASK (\
@@ -5077,10 +5143,8 @@ static void rtl_hw_start_8101(struct net_device *dev)
void __iomem *ioaddr = tp->mmio_addr;
struct pci_dev *pdev = tp->pci_dev;
- if (tp->mac_version >= RTL_GIGA_MAC_VER_30) {
- tp->intr_event &= ~RxFIFOOver;
- tp->napi_event &= ~RxFIFOOver;
- }
+ if (tp->mac_version >= RTL_GIGA_MAC_VER_30)
+ tp->event_slow &= ~RxFIFOOver;
if (tp->mac_version == RTL_GIGA_MAC_VER_13 ||
tp->mac_version == RTL_GIGA_MAC_VER_16) {
@@ -5136,8 +5200,6 @@ static void rtl_hw_start_8101(struct net_device *dev)
rtl_set_rx_mode(dev);
RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xf000);
-
- RTL_W16(IntrMask, tp->intr_event);
}
static int rtl8169_change_mtu(struct net_device *dev, int new_mtu)
@@ -5330,92 +5392,34 @@ static void rtl8169_tx_clear(struct rtl8169_private *tp)
tp->cur_tx = tp->dirty_tx = 0;
}
-static void rtl8169_schedule_work(struct net_device *dev, work_func_t task)
+static void rtl_reset_work(struct rtl8169_private *tp)
{
- struct rtl8169_private *tp = netdev_priv(dev);
-
- PREPARE_DELAYED_WORK(&tp->task, task);
- schedule_delayed_work(&tp->task, 4);
-}
-
-static void rtl8169_wait_for_quiescence(struct net_device *dev)
-{
- struct rtl8169_private *tp = netdev_priv(dev);
- void __iomem *ioaddr = tp->mmio_addr;
-
- synchronize_irq(dev->irq);
-
- /* Wait for any pending NAPI task to complete */
- napi_disable(&tp->napi);
-
- rtl8169_irq_mask_and_ack(tp);
-
- tp->intr_mask = 0xffff;
- RTL_W16(IntrMask, tp->intr_event);
- napi_enable(&tp->napi);
-}
-
-static void rtl8169_reinit_task(struct work_struct *work)
-{
- struct rtl8169_private *tp =
- container_of(work, struct rtl8169_private, task.work);
- struct net_device *dev = tp->dev;
- int ret;
-
- rtnl_lock();
-
- if (!netif_running(dev))
- goto out_unlock;
-
- rtl8169_wait_for_quiescence(dev);
- rtl8169_close(dev);
-
- ret = rtl8169_open(dev);
- if (unlikely(ret < 0)) {
- if (net_ratelimit())
- netif_err(tp, drv, dev,
- "reinit failure (status = %d). Rescheduling\n",
- ret);
- rtl8169_schedule_work(dev, rtl8169_reinit_task);
- }
-
-out_unlock:
- rtnl_unlock();
-}
-
-static void rtl8169_reset_task(struct work_struct *work)
-{
- struct rtl8169_private *tp =
- container_of(work, struct rtl8169_private, task.work);
struct net_device *dev = tp->dev;
int i;
- rtnl_lock();
-
- if (!netif_running(dev))
- goto out_unlock;
+ napi_disable(&tp->napi);
+ netif_stop_queue(dev);
+ synchronize_sched();
rtl8169_hw_reset(tp);
- rtl8169_wait_for_quiescence(dev);
-
for (i = 0; i < NUM_RX_DESC; i++)
rtl8169_mark_to_asic(tp->RxDescArray + i, rx_buf_sz);
rtl8169_tx_clear(tp);
rtl8169_init_ring_indexes(tp);
+ napi_enable(&tp->napi);
rtl_hw_start(dev);
netif_wake_queue(dev);
rtl8169_check_link_status(dev, tp, tp->mmio_addr);
-
-out_unlock:
- rtnl_unlock();
}
static void rtl8169_tx_timeout(struct net_device *dev)
{
- rtl8169_schedule_work(dev, rtl8169_reset_task);
+ struct rtl8169_private *tp = netdev_priv(dev);
+
+ rtl_schedule_task(tp, RTL_FLAG_TASK_RESET_PENDING);
}
static int rtl8169_xmit_frags(struct rtl8169_private *tp, struct sk_buff *skb,
@@ -5552,9 +5556,11 @@ static netdev_tx_t rtl8169_start_xmit(struct sk_buff *skb,
RTL_W8(TxPoll, NPQ);
+ mmiowb();
+
if (TX_BUFFS_AVAIL(tp) < MAX_SKB_FRAGS) {
netif_stop_queue(dev);
- smp_rmb();
+ smp_mb();
if (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)
netif_wake_queue(dev);
}
@@ -5618,12 +5624,10 @@ static void rtl8169_pcierr_interrupt(struct net_device *dev)
rtl8169_hw_reset(tp);
- rtl8169_schedule_work(dev, rtl8169_reinit_task);
+ rtl_schedule_task_bh(tp, RTL_FLAG_TASK_RESET_PENDING);
}
-static void rtl8169_tx_interrupt(struct net_device *dev,
- struct rtl8169_private *tp,
- void __iomem *ioaddr)
+static void rtl_tx(struct net_device *dev, struct rtl8169_private *tp)
{
unsigned int dirty_tx, tx_left;
@@ -5655,7 +5659,7 @@ static void rtl8169_tx_interrupt(struct net_device *dev,
if (tp->dirty_tx != dirty_tx) {
tp->dirty_tx = dirty_tx;
- smp_wmb();
+ smp_mb();
if (netif_queue_stopped(dev) &&
(TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)) {
netif_wake_queue(dev);
@@ -5666,9 +5670,11 @@ static void rtl8169_tx_interrupt(struct net_device *dev,
* of start_xmit activity is detected (if it is not detected,
* it is slow enough). -- FR
*/
- smp_rmb();
- if (tp->cur_tx != dirty_tx)
+ if (tp->cur_tx != dirty_tx) {
+ void __iomem *ioaddr = tp->mmio_addr;
+
RTL_W8(TxPoll, NPQ);
+ }
}
}
@@ -5707,9 +5713,7 @@ static struct sk_buff *rtl8169_try_rx_copy(void *data,
return skb;
}
-static int rtl8169_rx_interrupt(struct net_device *dev,
- struct rtl8169_private *tp,
- void __iomem *ioaddr, u32 budget)
+static int rtl_rx(struct net_device *dev, struct rtl8169_private *tp, u32 budget)
{
unsigned int cur_rx, rx_left;
unsigned int count;
@@ -5737,7 +5741,7 @@ static int rtl8169_rx_interrupt(struct net_device *dev,
if (status & RxCRC)
dev->stats.rx_crc_errors++;
if (status & RxFOVF) {
- rtl8169_schedule_work(dev, rtl8169_reset_task);
+ rtl_schedule_task(tp, RTL_FLAG_TASK_RESET_PENDING);
dev->stats.rx_fifo_errors++;
}
rtl8169_mark_to_asic(desc, rx_buf_sz);
@@ -5798,101 +5802,120 @@ static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance)
{
struct net_device *dev = dev_instance;
struct rtl8169_private *tp = netdev_priv(dev);
- void __iomem *ioaddr = tp->mmio_addr;
int handled = 0;
- int status;
-
- /* loop handling interrupts until we have no new ones or
- * we hit a invalid/hotplug case.
- */
- status = RTL_R16(IntrStatus);
- while (status && status != 0xffff) {
- status &= tp->intr_event;
- if (!status)
- break;
+ u16 status;
- handled = 1;
+ status = rtl_get_events(tp);
+ if (status && status != 0xffff) {
+ status &= RTL_EVENT_NAPI | tp->event_slow;
+ if (status) {
+ handled = 1;
- /* Handle all of the error cases first. These will reset
- * the chip, so just exit the loop.
- */
- if (unlikely(!netif_running(dev))) {
- rtl8169_hw_reset(tp);
- break;
+ rtl_irq_disable(tp);
+ napi_schedule(&tp->napi);
}
+ }
+ return IRQ_RETVAL(handled);
+}
- if (unlikely(status & RxFIFOOver)) {
- switch (tp->mac_version) {
- /* Work around for rx fifo overflow */
- case RTL_GIGA_MAC_VER_11:
- netif_stop_queue(dev);
- rtl8169_tx_timeout(dev);
- goto done;
- default:
- break;
- }
- }
+/*
+ * Workqueue context.
+ */
+static void rtl_slow_event_work(struct rtl8169_private *tp)
+{
+ struct net_device *dev = tp->dev;
+ u16 status;
+
+ status = rtl_get_events(tp) & tp->event_slow;
+ rtl_ack_events(tp, status);
- if (unlikely(status & SYSErr)) {
- rtl8169_pcierr_interrupt(dev);
+ if (unlikely(status & RxFIFOOver)) {
+ switch (tp->mac_version) {
+ /* Work around for rx fifo overflow */
+ case RTL_GIGA_MAC_VER_11:
+ netif_stop_queue(dev);
+ rtl_schedule_task_bh(tp, RTL_FLAG_TASK_RESET_PENDING);
+ default:
break;
}
+ }
- if (status & LinkChg)
- __rtl8169_check_link_status(dev, tp, ioaddr, true);
+ if (unlikely(status & SYSErr))
+ rtl8169_pcierr_interrupt(dev);
- /* We need to see the lastest version of tp->intr_mask to
- * avoid ignoring an MSI interrupt and having to wait for
- * another event which may never come.
- */
- smp_rmb();
- if (status & tp->intr_mask & tp->napi_event) {
- RTL_W16(IntrMask, tp->intr_event & ~tp->napi_event);
- tp->intr_mask = ~tp->napi_event;
-
- if (likely(napi_schedule_prep(&tp->napi)))
- __napi_schedule(&tp->napi);
- else
- netif_info(tp, intr, dev,
- "interrupt %04x in poll\n", status);
- }
+ if (status & LinkChg)
+ __rtl8169_check_link_status(dev, tp, tp->mmio_addr, true);
- /* We only get a new MSI interrupt when all active irq
- * sources on the chip have been acknowledged. So, ack
- * everything we've seen and check if new sources have become
- * active to avoid blocking all interrupts from the chip.
- */
- RTL_W16(IntrStatus,
- (status & RxFIFOOver) ? (status | RxOverflow) : status);
- status = RTL_R16(IntrStatus);
+ napi_disable(&tp->napi);
+ rtl_irq_disable(tp);
+
+ napi_enable(&tp->napi);
+ napi_schedule(&tp->napi);
+}
+
+static void rtl_task(struct work_struct *work)
+{
+ static const struct {
+ int bitnr;
+ void (*action)(struct rtl8169_private *);
+ } rtl_work[] = {
+ { RTL_FLAG_TASK_SLOW_PENDING, rtl_slow_event_work },
+ { RTL_FLAG_TASK_RESET_PENDING, rtl_reset_work },
+ { RTL_FLAG_TASK_PHY_PENDING, rtl_phy_work }
+ };
+ struct rtl8169_private *tp =
+ container_of(work, struct rtl8169_private, wk.work);
+ struct net_device *dev = tp->dev;
+ int i;
+
+ rtl_lock_work(tp);
+
+ if (!netif_running(dev) || !tp->wk.enabled)
+ goto out_unlock;
+
+ for (i = 0; i < ARRAY_SIZE(rtl_work); i++) {
+ bool pending;
+
+ spin_lock_bh(&tp->lock);
+ pending = test_and_clear_bit(rtl_work[i].bitnr, tp->wk.flags);
+ spin_unlock_bh(&tp->lock);
+
+ if (pending)
+ rtl_work[i].action(tp);
}
-done:
- return IRQ_RETVAL(handled);
+
+out_unlock:
+ rtl_unlock_work(tp);
}
static int rtl8169_poll(struct napi_struct *napi, int budget)
{
struct rtl8169_private *tp = container_of(napi, struct rtl8169_private, napi);
struct net_device *dev = tp->dev;
- void __iomem *ioaddr = tp->mmio_addr;
- int work_done;
+ u16 enable_mask = RTL_EVENT_NAPI | tp->event_slow;
+ int work_done= 0;
+ u16 status;
+
+ status = rtl_get_events(tp);
+ rtl_ack_events(tp, status & ~tp->event_slow);
+
+ if (status & RTL_EVENT_NAPI_RX)
+ work_done = rtl_rx(dev, tp, (u32) budget);
+
+ if (status & RTL_EVENT_NAPI_TX)
+ rtl_tx(dev, tp);
- work_done = rtl8169_rx_interrupt(dev, tp, ioaddr, (u32) budget);
- rtl8169_tx_interrupt(dev, tp, ioaddr);
+ if (status & tp->event_slow) {
+ enable_mask &= ~tp->event_slow;
+
+ rtl_schedule_task(tp, RTL_FLAG_TASK_SLOW_PENDING);
+ }
if (work_done < budget) {
napi_complete(napi);
- /* We need for force the visibility of tp->intr_mask
- * for other CPUs, as we can loose an MSI interrupt
- * and potentially wait for a retransmit timeout if we don't.
- * The posted write to IntrMask is safe, as it will
- * eventually make it to the chip and we won't loose anything
- * until it does.
- */
- tp->intr_mask = 0xffff;
- wmb();
- RTL_W16(IntrMask, tp->intr_event);
+ rtl_irq_enable(tp, enable_mask);
+ mmiowb();
}
return work_done;
@@ -5916,26 +5939,19 @@ static void rtl8169_down(struct net_device *dev)
del_timer_sync(&tp->timer);
- netif_stop_queue(dev);
-
napi_disable(&tp->napi);
-
- spin_lock_irq(&tp->lock);
+ netif_stop_queue(dev);
rtl8169_hw_reset(tp);
/*
* At this point device interrupts can not be enabled in any function,
- * as netif_running is not true (rtl8169_interrupt, rtl8169_reset_task,
- * rtl8169_reinit_task) and napi is disabled (rtl8169_poll).
+ * as netif_running is not true (rtl8169_interrupt, rtl8169_reset_task)
+ * and napi is disabled (rtl8169_poll).
*/
rtl8169_rx_missed(dev, ioaddr);
- spin_unlock_irq(&tp->lock);
-
- synchronize_irq(dev->irq);
-
/* Give a racing hard_start_xmit a few cycles to complete. */
- synchronize_sched(); /* FIXME: should this be synchronize_irq()? */
+ synchronize_sched();
rtl8169_tx_clear(tp);
@@ -5954,7 +5970,11 @@ static int rtl8169_close(struct net_device *dev)
/* Update counters before going down */
rtl8169_update_counters(dev);
+ rtl_lock_work(tp);
+ tp->wk.enabled = false;
+
rtl8169_down(dev);
+ rtl_unlock_work(tp);
free_irq(dev->irq, dev);
@@ -5974,7 +5994,6 @@ static void rtl_set_rx_mode(struct net_device *dev)
{
struct rtl8169_private *tp = netdev_priv(dev);
void __iomem *ioaddr = tp->mmio_addr;
- unsigned long flags;
u32 mc_filter[2]; /* Multicast hash filter */
int rx_mode;
u32 tmp = 0;
@@ -6003,7 +6022,7 @@ static void rtl_set_rx_mode(struct net_device *dev)
}
}
- spin_lock_irqsave(&tp->lock, flags);
+ spin_lock_bh(&tp->lock);
tmp = (RTL_R32(RxConfig) & ~RX_CONFIG_ACCEPT_MASK) | rx_mode;
@@ -6019,7 +6038,7 @@ static void rtl_set_rx_mode(struct net_device *dev)
RTL_W32(RxConfig, tmp);
- spin_unlock_irqrestore(&tp->lock, flags);
+ spin_unlock_bh(&tp->lock);
}
/**
@@ -6032,13 +6051,9 @@ static struct net_device_stats *rtl8169_get_stats(struct net_device *dev)
{
struct rtl8169_private *tp = netdev_priv(dev);
void __iomem *ioaddr = tp->mmio_addr;
- unsigned long flags;
- if (netif_running(dev)) {
- spin_lock_irqsave(&tp->lock, flags);
+ if (netif_running(dev))
rtl8169_rx_missed(dev, ioaddr);
- spin_unlock_irqrestore(&tp->lock, flags);
- }
return &dev->stats;
}
@@ -6050,10 +6065,15 @@ static void rtl8169_net_suspend(struct net_device *dev)
if (!netif_running(dev))
return;
- rtl_pll_power_down(tp);
-
netif_device_detach(dev);
netif_stop_queue(dev);
+
+ rtl_lock_work(tp);
+ napi_disable(&tp->napi);
+ tp->wk.enabled = false;
+ rtl_unlock_work(tp);
+
+ rtl_pll_power_down(tp);
}
#ifdef CONFIG_PM
@@ -6076,7 +6096,9 @@ static void __rtl8169_resume(struct net_device *dev)
rtl_pll_power_up(tp);
- rtl8169_schedule_work(dev, rtl8169_reset_task);
+ tp->wk.enabled = true;
+
+ rtl_schedule_task_bh(tp, RTL_FLAG_TASK_RESET_PENDING);
}
static int rtl8169_resume(struct device *device)
@@ -6102,10 +6124,10 @@ static int rtl8169_runtime_suspend(struct device *device)
if (!tp->TxDescArray)
return 0;
- spin_lock_irq(&tp->lock);
+ rtl_lock_work(tp);
tp->saved_wolopts = __rtl8169_get_wol(tp);
__rtl8169_set_wol(tp, WAKE_ANY);
- spin_unlock_irq(&tp->lock);
+ rtl_unlock_work(tp);
rtl8169_net_suspend(dev);
@@ -6121,10 +6143,10 @@ static int rtl8169_runtime_resume(struct device *device)
if (!tp->TxDescArray)
return 0;
- spin_lock_irq(&tp->lock);
+ rtl_lock_work(tp);
__rtl8169_set_wol(tp, tp->saved_wolopts);
tp->saved_wolopts = 0;
- spin_unlock_irq(&tp->lock);
+ rtl_unlock_work(tp);
rtl8169_init_phy(dev, tp);
@@ -6192,12 +6214,8 @@ static void rtl_shutdown(struct pci_dev *pdev)
/* Restore original MAC address */
rtl_rar_set(tp, dev->perm_addr);
- spin_lock_irq(&tp->lock);
-
rtl8169_hw_reset(tp);
- spin_unlock_irq(&tp->lock);
-
if (system_state == SYSTEM_POWER_OFF) {
if (__rtl8169_get_wol(tp) & WAKE_ANY) {
rtl_wol_suspend_quirk(tp);
--
Ueimor
--
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