/* bnx2.c: Broadcom NX2 network driver.
*
- * Copyright (c) 2004, 2005, 2006 Broadcom Corporation
+ * Copyright (c) 2004-2007 Broadcom Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
#define DRV_MODULE_NAME "bnx2"
#define PFX DRV_MODULE_NAME ": "
-#define DRV_MODULE_VERSION "1.5.8"
-#define DRV_MODULE_RELDATE "April 24, 2007"
+#define DRV_MODULE_VERSION "1.5.10"
+#define DRV_MODULE_RELDATE "May 1, 2007"
#define RUN_AT(x) (jiffies + (x))
return 0;
}
-static void
-bnx2_phy_int(struct bnx2 *bp)
+static int
+bnx2_phy_event_is_set(struct bnx2 *bp, u32 event)
{
+ struct status_block *sblk = bp->status_blk;
u32 new_link_state, old_link_state;
+ int is_set = 1;
- new_link_state = bp->status_blk->status_attn_bits &
- STATUS_ATTN_BITS_LINK_STATE;
- old_link_state = bp->status_blk->status_attn_bits_ack &
- STATUS_ATTN_BITS_LINK_STATE;
+ new_link_state = sblk->status_attn_bits & event;
+ old_link_state = sblk->status_attn_bits_ack & event;
if (new_link_state != old_link_state) {
- if (new_link_state) {
- REG_WR(bp, BNX2_PCICFG_STATUS_BIT_SET_CMD,
- STATUS_ATTN_BITS_LINK_STATE);
- }
- else {
- REG_WR(bp, BNX2_PCICFG_STATUS_BIT_CLEAR_CMD,
- STATUS_ATTN_BITS_LINK_STATE);
- }
+ if (new_link_state)
+ REG_WR(bp, BNX2_PCICFG_STATUS_BIT_SET_CMD, event);
+ else
+ REG_WR(bp, BNX2_PCICFG_STATUS_BIT_CLEAR_CMD, event);
+ } else
+ is_set = 0;
+
+ return is_set;
+}
+
+static void
+bnx2_phy_int(struct bnx2 *bp)
+{
+ if (bnx2_phy_event_is_set(bp, STATUS_ATTN_BITS_LINK_STATE)) {
+ spin_lock(&bp->phy_lock);
bnx2_set_link(bp);
+ spin_unlock(&bp->phy_lock);
}
}
return IRQ_HANDLED;
}
+static irqreturn_t
+bnx2_msi_1shot(int irq, void *dev_instance)
+{
+ struct net_device *dev = dev_instance;
+ struct bnx2 *bp = netdev_priv(dev);
+
+ prefetch(bp->status_blk);
+
+ /* Return here if interrupt is disabled. */
+ if (unlikely(atomic_read(&bp->intr_sem) != 0))
+ return IRQ_HANDLED;
+
+ netif_rx_schedule(dev);
+
+ return IRQ_HANDLED;
+}
+
static irqreturn_t
bnx2_interrupt(int irq, void *dev_instance)
{
return IRQ_HANDLED;
}
+#define STATUS_ATTN_EVENTS STATUS_ATTN_BITS_LINK_STATE
+
static inline int
bnx2_has_work(struct bnx2 *bp)
{
(sblk->status_tx_quick_consumer_index0 != bp->hw_tx_cons))
return 1;
- if ((sblk->status_attn_bits & STATUS_ATTN_BITS_LINK_STATE) !=
- (sblk->status_attn_bits_ack & STATUS_ATTN_BITS_LINK_STATE))
+ if ((sblk->status_attn_bits & STATUS_ATTN_EVENTS) !=
+ (sblk->status_attn_bits_ack & STATUS_ATTN_EVENTS))
return 1;
return 0;
bnx2_poll(struct net_device *dev, int *budget)
{
struct bnx2 *bp = netdev_priv(dev);
+ struct status_block *sblk = bp->status_blk;
+ u32 status_attn_bits = sblk->status_attn_bits;
+ u32 status_attn_bits_ack = sblk->status_attn_bits_ack;
- if ((bp->status_blk->status_attn_bits &
- STATUS_ATTN_BITS_LINK_STATE) !=
- (bp->status_blk->status_attn_bits_ack &
- STATUS_ATTN_BITS_LINK_STATE)) {
+ if ((status_attn_bits & STATUS_ATTN_EVENTS) !=
+ (status_attn_bits_ack & STATUS_ATTN_EVENTS)) {
- spin_lock(&bp->phy_lock);
bnx2_phy_int(bp);
- spin_unlock(&bp->phy_lock);
/* This is needed to take care of transient status
* during link changes.
REG_WR(bp, BNX2_HC_STAT_COLLECT_TICKS, 0xbb8); /* 3ms */
if (CHIP_ID(bp) == CHIP_ID_5706_A1)
- REG_WR(bp, BNX2_HC_CONFIG, BNX2_HC_CONFIG_COLLECT_STATS);
+ val = BNX2_HC_CONFIG_COLLECT_STATS;
else {
- REG_WR(bp, BNX2_HC_CONFIG, BNX2_HC_CONFIG_RX_TMR_MODE |
- BNX2_HC_CONFIG_TX_TMR_MODE |
- BNX2_HC_CONFIG_COLLECT_STATS);
+ val = BNX2_HC_CONFIG_RX_TMR_MODE | BNX2_HC_CONFIG_TX_TMR_MODE |
+ BNX2_HC_CONFIG_COLLECT_STATS;
}
+ if (bp->flags & ONE_SHOT_MSI_FLAG)
+ val |= BNX2_HC_CONFIG_ONE_SHOT;
+
+ REG_WR(bp, BNX2_HC_CONFIG, val);
+
/* Clear internal stats counters. */
REG_WR(bp, BNX2_HC_COMMAND, BNX2_HC_COMMAND_CLR_STAT_NOW);
- REG_WR(bp, BNX2_HC_ATTN_BITS_ENABLE, STATUS_ATTN_BITS_LINK_STATE);
+ REG_WR(bp, BNX2_HC_ATTN_BITS_ENABLE, STATUS_ATTN_EVENTS);
if (REG_RD_IND(bp, bp->shmem_base + BNX2_PORT_FEATURE) &
BNX2_PORT_FEATURE_ASF_ENABLED)
mod_timer(&bp->timer, jiffies + bp->current_interval);
}
+static int
+bnx2_request_irq(struct bnx2 *bp)
+{
+ struct net_device *dev = bp->dev;
+ int rc = 0;
+
+ if (bp->flags & USING_MSI_FLAG) {
+ irq_handler_t fn = bnx2_msi;
+
+ if (bp->flags & ONE_SHOT_MSI_FLAG)
+ fn = bnx2_msi_1shot;
+
+ rc = request_irq(bp->pdev->irq, fn, 0, dev->name, dev);
+ } else
+ rc = request_irq(bp->pdev->irq, bnx2_interrupt,
+ IRQF_SHARED, dev->name, dev);
+ return rc;
+}
+
+static void
+bnx2_free_irq(struct bnx2 *bp)
+{
+ struct net_device *dev = bp->dev;
+
+ if (bp->flags & USING_MSI_FLAG) {
+ free_irq(bp->pdev->irq, dev);
+ pci_disable_msi(bp->pdev);
+ bp->flags &= ~(USING_MSI_FLAG | ONE_SHOT_MSI_FLAG);
+ } else
+ free_irq(bp->pdev->irq, dev);
+}
+
/* Called with rtnl_lock */
static int
bnx2_open(struct net_device *dev)
if (rc)
return rc;
- if ((CHIP_ID(bp) != CHIP_ID_5706_A0) &&
- (CHIP_ID(bp) != CHIP_ID_5706_A1) &&
- !disable_msi) {
-
+ if ((bp->flags & MSI_CAP_FLAG) && !disable_msi) {
if (pci_enable_msi(bp->pdev) == 0) {
bp->flags |= USING_MSI_FLAG;
- rc = request_irq(bp->pdev->irq, bnx2_msi, 0, dev->name,
- dev);
- }
- else {
- rc = request_irq(bp->pdev->irq, bnx2_interrupt,
- IRQF_SHARED, dev->name, dev);
+ if (CHIP_NUM(bp) == CHIP_NUM_5709)
+ bp->flags |= ONE_SHOT_MSI_FLAG;
}
}
- else {
- rc = request_irq(bp->pdev->irq, bnx2_interrupt, IRQF_SHARED,
- dev->name, dev);
- }
+ rc = bnx2_request_irq(bp);
+
if (rc) {
bnx2_free_mem(bp);
return rc;
rc = bnx2_init_nic(bp);
if (rc) {
- free_irq(bp->pdev->irq, dev);
- if (bp->flags & USING_MSI_FLAG) {
- pci_disable_msi(bp->pdev);
- bp->flags &= ~USING_MSI_FLAG;
- }
+ bnx2_free_irq(bp);
bnx2_free_skbs(bp);
bnx2_free_mem(bp);
return rc;
bp->dev->name);
bnx2_disable_int(bp);
- free_irq(bp->pdev->irq, dev);
- pci_disable_msi(bp->pdev);
- bp->flags &= ~USING_MSI_FLAG;
+ bnx2_free_irq(bp);
rc = bnx2_init_nic(bp);
- if (!rc) {
- rc = request_irq(bp->pdev->irq, bnx2_interrupt,
- IRQF_SHARED, dev->name, dev);
- }
+ if (!rc)
+ rc = bnx2_request_irq(bp);
+
if (rc) {
bnx2_free_skbs(bp);
bnx2_free_mem(bp);
vlan_tag_flags |=
(TX_BD_FLAGS_VLAN_TAG | (vlan_tx_tag_get(skb) << 16));
}
- if ((mss = skb_shinfo(skb)->gso_size) &&
- (skb->len > (bp->dev->mtu + ETH_HLEN))) {
+ if ((mss = skb_shinfo(skb)->gso_size)) {
u32 tcp_opt_len, ip_tcp_len;
struct iphdr *iph;
else
reset_code = BNX2_DRV_MSG_CODE_SUSPEND_NO_WOL;
bnx2_reset_chip(bp, reset_code);
- free_irq(bp->pdev->irq, dev);
- if (bp->flags & USING_MSI_FLAG) {
- pci_disable_msi(bp->pdev);
- bp->flags &= ~USING_MSI_FLAG;
- }
+ bnx2_free_irq(bp);
bnx2_free_skbs(bp);
bnx2_free_mem(bp);
bp->link_up = 0;
}
}
+static void __devinit
+bnx2_get_pci_speed(struct bnx2 *bp)
+{
+ u32 reg;
+
+ reg = REG_RD(bp, BNX2_PCICFG_MISC_STATUS);
+ if (reg & BNX2_PCICFG_MISC_STATUS_PCIX_DET) {
+ u32 clkreg;
+
+ bp->flags |= PCIX_FLAG;
+
+ clkreg = REG_RD(bp, BNX2_PCICFG_PCI_CLOCK_CONTROL_BITS);
+
+ clkreg &= BNX2_PCICFG_PCI_CLOCK_CONTROL_BITS_PCI_CLK_SPD_DET;
+ switch (clkreg) {
+ case BNX2_PCICFG_PCI_CLOCK_CONTROL_BITS_PCI_CLK_SPD_DET_133MHZ:
+ bp->bus_speed_mhz = 133;
+ break;
+
+ case BNX2_PCICFG_PCI_CLOCK_CONTROL_BITS_PCI_CLK_SPD_DET_95MHZ:
+ bp->bus_speed_mhz = 100;
+ break;
+
+ case BNX2_PCICFG_PCI_CLOCK_CONTROL_BITS_PCI_CLK_SPD_DET_66MHZ:
+ case BNX2_PCICFG_PCI_CLOCK_CONTROL_BITS_PCI_CLK_SPD_DET_80MHZ:
+ bp->bus_speed_mhz = 66;
+ break;
+
+ case BNX2_PCICFG_PCI_CLOCK_CONTROL_BITS_PCI_CLK_SPD_DET_48MHZ:
+ case BNX2_PCICFG_PCI_CLOCK_CONTROL_BITS_PCI_CLK_SPD_DET_55MHZ:
+ bp->bus_speed_mhz = 50;
+ break;
+
+ case BNX2_PCICFG_PCI_CLOCK_CONTROL_BITS_PCI_CLK_SPD_DET_LOW:
+ case BNX2_PCICFG_PCI_CLOCK_CONTROL_BITS_PCI_CLK_SPD_DET_32MHZ:
+ case BNX2_PCICFG_PCI_CLOCK_CONTROL_BITS_PCI_CLK_SPD_DET_38MHZ:
+ bp->bus_speed_mhz = 33;
+ break;
+ }
+ }
+ else {
+ if (reg & BNX2_PCICFG_MISC_STATUS_M66EN)
+ bp->bus_speed_mhz = 66;
+ else
+ bp->bus_speed_mhz = 33;
+ }
+
+ if (reg & BNX2_PCICFG_MISC_STATUS_32BIT_DET)
+ bp->flags |= PCI_32BIT_FLAG;
+
+}
+
static int __devinit
bnx2_init_board(struct pci_dev *pdev, struct net_device *dev)
{
bp->chip_id = REG_RD(bp, BNX2_MISC_ID);
- if (CHIP_NUM(bp) != CHIP_NUM_5709) {
+ if (CHIP_NUM(bp) == CHIP_NUM_5709) {
+ if (pci_find_capability(pdev, PCI_CAP_ID_EXP) == 0) {
+ dev_err(&pdev->dev,
+ "Cannot find PCIE capability, aborting.\n");
+ rc = -EIO;
+ goto err_out_unmap;
+ }
+ bp->flags |= PCIE_FLAG;
+ } else {
bp->pcix_cap = pci_find_capability(pdev, PCI_CAP_ID_PCIX);
if (bp->pcix_cap == 0) {
dev_err(&pdev->dev,
}
}
+ if (CHIP_ID(bp) != CHIP_ID_5706_A0 && CHIP_ID(bp) != CHIP_ID_5706_A1) {
+ if (pci_find_capability(pdev, PCI_CAP_ID_MSI))
+ bp->flags |= MSI_CAP_FLAG;
+ }
+
/* 5708 cannot support DMA addresses > 40-bit. */
if (CHIP_NUM(bp) == CHIP_NUM_5708)
persist_dma_mask = dma_mask = DMA_40BIT_MASK;
goto err_out_unmap;
}
- /* Get bus information. */
- reg = REG_RD(bp, BNX2_PCICFG_MISC_STATUS);
- if (reg & BNX2_PCICFG_MISC_STATUS_PCIX_DET) {
- u32 clkreg;
-
- bp->flags |= PCIX_FLAG;
-
- clkreg = REG_RD(bp, BNX2_PCICFG_PCI_CLOCK_CONTROL_BITS);
-
- clkreg &= BNX2_PCICFG_PCI_CLOCK_CONTROL_BITS_PCI_CLK_SPD_DET;
- switch (clkreg) {
- case BNX2_PCICFG_PCI_CLOCK_CONTROL_BITS_PCI_CLK_SPD_DET_133MHZ:
- bp->bus_speed_mhz = 133;
- break;
-
- case BNX2_PCICFG_PCI_CLOCK_CONTROL_BITS_PCI_CLK_SPD_DET_95MHZ:
- bp->bus_speed_mhz = 100;
- break;
-
- case BNX2_PCICFG_PCI_CLOCK_CONTROL_BITS_PCI_CLK_SPD_DET_66MHZ:
- case BNX2_PCICFG_PCI_CLOCK_CONTROL_BITS_PCI_CLK_SPD_DET_80MHZ:
- bp->bus_speed_mhz = 66;
- break;
-
- case BNX2_PCICFG_PCI_CLOCK_CONTROL_BITS_PCI_CLK_SPD_DET_48MHZ:
- case BNX2_PCICFG_PCI_CLOCK_CONTROL_BITS_PCI_CLK_SPD_DET_55MHZ:
- bp->bus_speed_mhz = 50;
- break;
-
- case BNX2_PCICFG_PCI_CLOCK_CONTROL_BITS_PCI_CLK_SPD_DET_LOW:
- case BNX2_PCICFG_PCI_CLOCK_CONTROL_BITS_PCI_CLK_SPD_DET_32MHZ:
- case BNX2_PCICFG_PCI_CLOCK_CONTROL_BITS_PCI_CLK_SPD_DET_38MHZ:
- bp->bus_speed_mhz = 33;
- break;
- }
- }
- else {
- if (reg & BNX2_PCICFG_MISC_STATUS_M66EN)
- bp->bus_speed_mhz = 66;
- else
- bp->bus_speed_mhz = 33;
- }
-
- if (reg & BNX2_PCICFG_MISC_STATUS_32BIT_DET)
- bp->flags |= PCI_32BIT_FLAG;
+ if (!(bp->flags & PCIE_FLAG))
+ bnx2_get_pci_speed(bp);
/* 5706A0 may falsely detect SERR and PERR. */
if (CHIP_ID(bp) == CHIP_ID_5706_A0) {
return rc;
}
+static char * __devinit
+bnx2_bus_string(struct bnx2 *bp, char *str)
+{
+ char *s = str;
+
+ if (bp->flags & PCIE_FLAG) {
+ s += sprintf(s, "PCI Express");
+ } else {
+ s += sprintf(s, "PCI");
+ if (bp->flags & PCIX_FLAG)
+ s += sprintf(s, "-X");
+ if (bp->flags & PCI_32BIT_FLAG)
+ s += sprintf(s, " 32-bit");
+ else
+ s += sprintf(s, " 64-bit");
+ s += sprintf(s, " %dMHz", bp->bus_speed_mhz);
+ }
+ return str;
+}
+
static int __devinit
bnx2_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
{
struct net_device *dev = NULL;
struct bnx2 *bp;
int rc, i;
+ char str[40];
if (version_printed++ == 0)
printk(KERN_INFO "%s", version);
return rc;
}
- printk(KERN_INFO "%s: %s (%c%d) PCI%s %s %dMHz found at mem %lx, "
+ printk(KERN_INFO "%s: %s (%c%d) %s found at mem %lx, "
"IRQ %d, ",
dev->name,
bp->name,
((CHIP_ID(bp) & 0xf000) >> 12) + 'A',
((CHIP_ID(bp) & 0x0ff0) >> 4),
- ((bp->flags & PCIX_FLAG) ? "-X" : ""),
- ((bp->flags & PCI_32BIT_FLAG) ? "32-bit" : "64-bit"),
- bp->bus_speed_mhz,
+ bnx2_bus_string(bp, str),
dev->base_addr,
bp->pdev->irq);
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