1 files changed, 59 insertions, 102 deletions

diff --git a/drivers/net/e100.c b/drivers/net/e100.c
index 0cefef5e3f06..61696637a21e 100644
--- a/drivers/net/e100.c
+++ b/drivers/net/e100.c
@@ -159,7 +159,7 @@
 
 #define DRV_NAME		"e100"
 #define DRV_EXT			"-NAPI"
-#define DRV_VERSION		"3.5.17-k2"DRV_EXT
+#define DRV_VERSION		"3.5.17-k4"DRV_EXT
 #define DRV_DESCRIPTION		"Intel(R) PRO/100 Network Driver"
 #define DRV_COPYRIGHT		"Copyright(c) 1999-2006 Intel Corporation"
 #define PFX			DRV_NAME ": "
@@ -174,10 +174,13 @@ MODULE_VERSION(DRV_VERSION);
 
 static int debug = 3;
 static int eeprom_bad_csum_allow = 0;
+static int use_io = 0;
 module_param(debug, int, 0);
 module_param(eeprom_bad_csum_allow, int, 0);
+module_param(use_io, int, 0);
 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
 MODULE_PARM_DESC(eeprom_bad_csum_allow, "Allow bad eeprom checksums");
+MODULE_PARM_DESC(use_io, "Force use of i/o access mode");
 #define DPRINTK(nlevel, klevel, fmt, args...) \
 	(void)((NETIF_MSG_##nlevel & nic->msg_enable) && \
 	printk(KERN_##klevel PFX "%s: %s: " fmt, nic->netdev->name, \
@@ -282,12 +285,6 @@ enum scb_status {
 	rus_mask         = 0x3C,
 };
 
-enum ru_state  {
-	RU_SUSPENDED = 0,
-	RU_RUNNING	 = 1,
-	RU_UNINITIALIZED = -1,
-};
-
 enum scb_stat_ack {
 	stat_ack_not_ours    = 0x00,
 	stat_ack_sw_gen      = 0x04,
@@ -529,7 +526,6 @@ struct nic {
 	struct rx *rx_to_use;
 	struct rx *rx_to_clean;
 	struct rfd blank_rfd;
-	enum ru_state ru_running;
 
 	spinlock_t cb_lock			____cacheline_aligned;
 	spinlock_t cmd_lock;
@@ -591,7 +587,7 @@ static inline void e100_write_flush(struct nic *nic)
 {
 	/* Flush previous PCI writes through intermediate bridges
 	 * by doing a benign read */
-	(void)readb(&nic->csr->scb.status);
+	(void)ioread8(&nic->csr->scb.status);
 }
 
 static void e100_enable_irq(struct nic *nic)
@@ -599,7 +595,7 @@ static void e100_enable_irq(struct nic *nic)
 	unsigned long flags;
 
 	spin_lock_irqsave(&nic->cmd_lock, flags);
-	writeb(irq_mask_none, &nic->csr->scb.cmd_hi);
+	iowrite8(irq_mask_none, &nic->csr->scb.cmd_hi);
 	e100_write_flush(nic);
 	spin_unlock_irqrestore(&nic->cmd_lock, flags);
 }
@@ -609,7 +605,7 @@ static void e100_disable_irq(struct nic *nic)
 	unsigned long flags;
 
 	spin_lock_irqsave(&nic->cmd_lock, flags);
-	writeb(irq_mask_all, &nic->csr->scb.cmd_hi);
+	iowrite8(irq_mask_all, &nic->csr->scb.cmd_hi);
 	e100_write_flush(nic);
 	spin_unlock_irqrestore(&nic->cmd_lock, flags);
 }
@@ -618,11 +614,11 @@ static void e100_hw_reset(struct nic *nic)
 {
 	/* Put CU and RU into idle with a selective reset to get
 	 * device off of PCI bus */
-	writel(selective_reset, &nic->csr->port);
+	iowrite32(selective_reset, &nic->csr->port);
 	e100_write_flush(nic); udelay(20);
 
 	/* Now fully reset device */
-	writel(software_reset, &nic->csr->port);
+	iowrite32(software_reset, &nic->csr->port);
 	e100_write_flush(nic); udelay(20);
 
 	/* Mask off our interrupt line - it's unmasked after reset */
@@ -639,7 +635,7 @@ static int e100_self_test(struct nic *nic)
 	nic->mem->selftest.signature = 0;
 	nic->mem->selftest.result = 0xFFFFFFFF;
 
-	writel(selftest | dma_addr, &nic->csr->port);
+	iowrite32(selftest | dma_addr, &nic->csr->port);
 	e100_write_flush(nic);
 	/* Wait 10 msec for self-test to complete */
 	msleep(10);
@@ -677,23 +673,23 @@ static void e100_eeprom_write(struct nic *nic, u16 addr_len, u16 addr, u16 data)
 	for(j = 0; j < 3; j++) {
 
 		/* Chip select */
-		writeb(eecs | eesk, &nic->csr->eeprom_ctrl_lo);
+		iowrite8(eecs | eesk, &nic->csr->eeprom_ctrl_lo);
 		e100_write_flush(nic); udelay(4);
 
 		for(i = 31; i >= 0; i--) {
 			ctrl = (cmd_addr_data[j] & (1 << i)) ?
 				eecs | eedi : eecs;
-			writeb(ctrl, &nic->csr->eeprom_ctrl_lo);
+			iowrite8(ctrl, &nic->csr->eeprom_ctrl_lo);
 			e100_write_flush(nic); udelay(4);
 
-			writeb(ctrl | eesk, &nic->csr->eeprom_ctrl_lo);
+			iowrite8(ctrl | eesk, &nic->csr->eeprom_ctrl_lo);
 			e100_write_flush(nic); udelay(4);
 		}
 		/* Wait 10 msec for cmd to complete */
 		msleep(10);
 
 		/* Chip deselect */
-		writeb(0, &nic->csr->eeprom_ctrl_lo);
+		iowrite8(0, &nic->csr->eeprom_ctrl_lo);
 		e100_write_flush(nic); udelay(4);
 	}
 };
@@ -709,21 +705,21 @@ static u16 e100_eeprom_read(struct nic *nic, u16 *addr_len, u16 addr)
 	cmd_addr_data = ((op_read << *addr_len) | addr) << 16;
 
 	/* Chip select */
-	writeb(eecs | eesk, &nic->csr->eeprom_ctrl_lo);
+	iowrite8(eecs | eesk, &nic->csr->eeprom_ctrl_lo);
 	e100_write_flush(nic); udelay(4);
 
 	/* Bit-bang to read word from eeprom */
 	for(i = 31; i >= 0; i--) {
 		ctrl = (cmd_addr_data & (1 << i)) ? eecs | eedi : eecs;
-		writeb(ctrl, &nic->csr->eeprom_ctrl_lo);
+		iowrite8(ctrl, &nic->csr->eeprom_ctrl_lo);
 		e100_write_flush(nic); udelay(4);
 
-		writeb(ctrl | eesk, &nic->csr->eeprom_ctrl_lo);
+		iowrite8(ctrl | eesk, &nic->csr->eeprom_ctrl_lo);
 		e100_write_flush(nic); udelay(4);
 
 		/* Eeprom drives a dummy zero to EEDO after receiving
 		 * complete address.  Use this to adjust addr_len. */
-		ctrl = readb(&nic->csr->eeprom_ctrl_lo);
+		ctrl = ioread8(&nic->csr->eeprom_ctrl_lo);
 		if(!(ctrl & eedo) && i > 16) {
 			*addr_len -= (i - 16);
 			i = 17;
@@ -733,7 +729,7 @@ static u16 e100_eeprom_read(struct nic *nic, u16 *addr_len, u16 addr)
 	}
 
 	/* Chip deselect */
-	writeb(0, &nic->csr->eeprom_ctrl_lo);
+	iowrite8(0, &nic->csr->eeprom_ctrl_lo);
 	e100_write_flush(nic); udelay(4);
 
 	return le16_to_cpu(data);
@@ -804,7 +800,7 @@ static int e100_exec_cmd(struct nic *nic, u8 cmd, dma_addr_t dma_addr)
 
 	/* Previous command is accepted when SCB clears */
 	for(i = 0; i < E100_WAIT_SCB_TIMEOUT; i++) {
-		if(likely(!readb(&nic->csr->scb.cmd_lo)))
+		if(likely(!ioread8(&nic->csr->scb.cmd_lo)))
 			break;
 		cpu_relax();
 		if(unlikely(i > E100_WAIT_SCB_FAST))
@@ -816,8 +812,8 @@ static int e100_exec_cmd(struct nic *nic, u8 cmd, dma_addr_t dma_addr)
 	}
 
 	if(unlikely(cmd != cuc_resume))
-		writel(dma_addr, &nic->csr->scb.gen_ptr);
-	writeb(cmd, &nic->csr->scb.cmd_lo);
+		iowrite32(dma_addr, &nic->csr->scb.gen_ptr);
+	iowrite8(cmd, &nic->csr->scb.cmd_lo);
 
 err_unlock:
 	spin_unlock_irqrestore(&nic->cmd_lock, flags);
@@ -895,7 +891,7 @@ static u16 mdio_ctrl(struct nic *nic, u32 addr, u32 dir, u32 reg, u16 data)
 	 */
 	spin_lock_irqsave(&nic->mdio_lock, flags);
 	for (i = 100; i; --i) {
-		if (readl(&nic->csr->mdi_ctrl) & mdi_ready)
+		if (ioread32(&nic->csr->mdi_ctrl) & mdi_ready)
 			break;
 		udelay(20);
 	}
@@ -905,11 +901,11 @@ static u16 mdio_ctrl(struct nic *nic, u32 addr, u32 dir, u32 reg, u16 data)
 		spin_unlock_irqrestore(&nic->mdio_lock, flags);
 		return 0;		/* No way to indicate timeout error */
 	}
-	writel((reg << 16) | (addr << 21) | dir | data, &nic->csr->mdi_ctrl);
+	iowrite32((reg << 16) | (addr << 21) | dir | data, &nic->csr->mdi_ctrl);
 
 	for (i = 0; i < 100; i++) {
 		udelay(20);
-		if ((data_out = readl(&nic->csr->mdi_ctrl)) & mdi_ready)
+		if ((data_out = ioread32(&nic->csr->mdi_ctrl)) & mdi_ready)
 			break;
 	}
 	spin_unlock_irqrestore(&nic->mdio_lock, flags);
@@ -951,7 +947,7 @@ static void e100_get_defaults(struct nic *nic)
 		((nic->mac >= mac_82558_D101_A4) ? cb_cid : cb_i));
 
 	/* Template for a freshly allocated RFD */
-	nic->blank_rfd.command = cpu_to_le16(cb_el);
+	nic->blank_rfd.command = cpu_to_le16(cb_el & cb_s);
 	nic->blank_rfd.rbd = 0xFFFFFFFF;
 	nic->blank_rfd.size = cpu_to_le16(VLAN_ETH_FRAME_LEN);
 
@@ -1318,7 +1314,7 @@ static inline int e100_exec_cb_wait(struct nic *nic, struct sk_buff *skb,
 	}
 
 	/* ack any interupts, something could have been set */
-	writeb(~0, &nic->csr->scb.stat_ack);
+	iowrite8(~0, &nic->csr->scb.stat_ack);
 
 	/* if the command failed, or is not OK, notify and return */
 	if (!counter || !(cb->status & cpu_to_le16(cb_ok))) {
@@ -1580,7 +1576,7 @@ static void e100_watchdog(unsigned long data)
 	 * accidentally, due to hardware that shares a register between the
 	 * interrupt mask bit and the SW Interrupt generation bit */
 	spin_lock_irq(&nic->cmd_lock);
-	writeb(readb(&nic->csr->scb.cmd_hi) | irq_sw_gen,&nic->csr->scb.cmd_hi);
+	iowrite8(ioread8(&nic->csr->scb.cmd_hi) | irq_sw_gen,&nic->csr->scb.cmd_hi);
 	e100_write_flush(nic);
 	spin_unlock_irq(&nic->cmd_lock);
 
@@ -1746,19 +1742,11 @@ static int e100_alloc_cbs(struct nic *nic)
 	return 0;
 }
 
-static inline void e100_start_receiver(struct nic *nic, struct rx *rx)
+static inline void e100_start_receiver(struct nic *nic)
 {
-	if(!nic->rxs) return;
-	if(RU_SUSPENDED != nic->ru_running) return;
-
-	/* handle init time starts */
-	if(!rx) rx = nic->rxs;
-
-	/* (Re)start RU if suspended or idle and RFA is non-NULL */
-	if(rx->skb) {
-		e100_exec_cmd(nic, ruc_start, rx->dma_addr);
-		nic->ru_running = RU_RUNNING;
-	}
+	/* Start if RFA is non-NULL */
+	if(nic->rx_to_clean->skb)
+		e100_exec_cmd(nic, ruc_start, nic->rx_to_clean->dma_addr);
 }
 
 #define RFD_BUF_LEN (sizeof(struct rfd) + VLAN_ETH_FRAME_LEN)
@@ -1769,7 +1757,7 @@ static int e100_rx_alloc_skb(struct nic *nic, struct rx *rx)
 
 	/* Align, init, and map the RFD. */
 	skb_reserve(rx->skb, NET_IP_ALIGN);
-	memcpy(rx->skb->data, &nic->blank_rfd, sizeof(struct rfd));
+	skb_copy_to_linear_data(rx->skb, &nic->blank_rfd, sizeof(struct rfd));
 	rx->dma_addr = pci_map_single(nic->pdev, rx->skb->data,
 		RFD_BUF_LEN, PCI_DMA_BIDIRECTIONAL);
 
@@ -1787,7 +1775,7 @@ static int e100_rx_alloc_skb(struct nic *nic, struct rx *rx)
 		put_unaligned(cpu_to_le32(rx->dma_addr),
 			(u32 *)&prev_rfd->link);
 		wmb();
-		prev_rfd->command &= ~cpu_to_le16(cb_el);
+		prev_rfd->command &= ~cpu_to_le16(cb_el & cb_s);
 		pci_dma_sync_single_for_device(nic->pdev, rx->prev->dma_addr,
 			sizeof(struct rfd), PCI_DMA_TODEVICE);
 	}
@@ -1825,10 +1813,6 @@ static int e100_rx_indicate(struct nic *nic, struct rx *rx,
 	pci_unmap_single(nic->pdev, rx->dma_addr,
 		RFD_BUF_LEN, PCI_DMA_FROMDEVICE);
 
-	/* this allows for a fast restart without re-enabling interrupts */
-	if(le16_to_cpu(rfd->command) & cb_el)
-		nic->ru_running = RU_SUSPENDED;
-
 	/* Pull off the RFD and put the actual data (minus eth hdr) */
 	skb_reserve(skb, sizeof(struct rfd));
 	skb_put(skb, actual_size);
@@ -1859,45 +1843,18 @@ static void e100_rx_clean(struct nic *nic, unsigned int *work_done,
 	unsigned int work_to_do)
 {
 	struct rx *rx;
-	int restart_required = 0;
-	struct rx *rx_to_start = NULL;
-
-	/* are we already rnr? then pay attention!!! this ensures that
-	 * the state machine progression never allows a start with a
-	 * partially cleaned list, avoiding a race between hardware
-	 * and rx_to_clean when in NAPI mode */
-	if(RU_SUSPENDED == nic->ru_running)
-		restart_required = 1;
 
 	/* Indicate newly arrived packets */
 	for(rx = nic->rx_to_clean; rx->skb; rx = nic->rx_to_clean = rx->next) {
-		int err = e100_rx_indicate(nic, rx, work_done, work_to_do);
-		if(-EAGAIN == err) {
-			/* hit quota so have more work to do, restart once
-			 * cleanup is complete */
-			restart_required = 0;
-			break;
-		} else if(-ENODATA == err)
+		if(e100_rx_indicate(nic, rx, work_done, work_to_do))
 			break; /* No more to clean */
 	}
 
-	/* save our starting point as the place we'll restart the receiver */
-	if(restart_required)
-		rx_to_start = nic->rx_to_clean;
-
 	/* Alloc new skbs to refill list */
 	for(rx = nic->rx_to_use; !rx->skb; rx = nic->rx_to_use = rx->next) {
 		if(unlikely(e100_rx_alloc_skb(nic, rx)))
 			break; /* Better luck next time (see watchdog) */
 	}
-
-	if(restart_required) {
-		// ack the rnr?
-		writeb(stat_ack_rnr, &nic->csr->scb.stat_ack);
-		e100_start_receiver(nic, rx_to_start);
-		if(work_done)
-			(*work_done)++;
-	}
 }
 
 static void e100_rx_clean_list(struct nic *nic)
@@ -1905,8 +1862,6 @@ static void e100_rx_clean_list(struct nic *nic)
 	struct rx *rx;
 	unsigned int i, count = nic->params.rfds.count;
 
-	nic->ru_running = RU_UNINITIALIZED;
-
 	if(nic->rxs) {
 		for(rx = nic->rxs, i = 0; i < count; rx++, i++) {
 			if(rx->skb) {
@@ -1928,7 +1883,6 @@ static int e100_rx_alloc_list(struct nic *nic)
 	unsigned int i, count = nic->params.rfds.count;
 
 	nic->rx_to_use = nic->rx_to_clean = NULL;
-	nic->ru_running = RU_UNINITIALIZED;
 
 	if(!(nic->rxs = kcalloc(count, sizeof(struct rx), GFP_ATOMIC)))
 		return -ENOMEM;
@@ -1943,7 +1897,6 @@ static int e100_rx_alloc_list(struct nic *nic)
 	}
 
 	nic->rx_to_use = nic->rx_to_clean = nic->rxs;
-	nic->ru_running = RU_SUSPENDED;
 
 	return 0;
 }
@@ -1952,7 +1905,7 @@ static irqreturn_t e100_intr(int irq, void *dev_id)
 {
 	struct net_device *netdev = dev_id;
 	struct nic *nic = netdev_priv(netdev);
-	u8 stat_ack = readb(&nic->csr->scb.stat_ack);
+	u8 stat_ack = ioread8(&nic->csr->scb.stat_ack);
 
 	DPRINTK(INTR, DEBUG, "stat_ack = 0x%02X\n", stat_ack);
 
@@ -1961,11 +1914,7 @@ static irqreturn_t e100_intr(int irq, void *dev_id)
 		return IRQ_NONE;
 
 	/* Ack interrupt(s) */
-	writeb(stat_ack, &nic->csr->scb.stat_ack);
-
-	/* We hit Receive No Resource (RNR); restart RU after cleaning */
-	if(stat_ack & stat_ack_rnr)
-		nic->ru_running = RU_SUSPENDED;
+	iowrite8(stat_ack, &nic->csr->scb.stat_ack);
 
 	if(likely(netif_rx_schedule_prep(netdev))) {
 		e100_disable_irq(nic);
@@ -2058,7 +2007,7 @@ static int e100_up(struct nic *nic)
 	if((err = e100_hw_init(nic)))
 		goto err_clean_cbs;
 	e100_set_multicast_list(nic->netdev);
-	e100_start_receiver(nic, NULL);
+	e100_start_receiver(nic);
 	mod_timer(&nic->watchdog, jiffies);
 	if((err = request_irq(nic->pdev->irq, e100_intr, IRQF_SHARED,
 		nic->netdev->name, nic->netdev)))
@@ -2107,7 +2056,7 @@ static void e100_tx_timeout_task(struct work_struct *work)
 	struct net_device *netdev = nic->netdev;
 
 	DPRINTK(TX_ERR, DEBUG, "scb.status=0x%02X\n",
-		readb(&nic->csr->scb.status));
+		ioread8(&nic->csr->scb.status));
 	e100_down(netdev_priv(netdev));
 	e100_up(netdev_priv(netdev));
 }
@@ -2139,7 +2088,7 @@ static int e100_loopback_test(struct nic *nic, enum loopback loopback_mode)
 		mdio_write(nic->netdev, nic->mii.phy_id, MII_BMCR,
 			BMCR_LOOPBACK);
 
-	e100_start_receiver(nic, NULL);
+	e100_start_receiver(nic);
 
 	if(!(skb = netdev_alloc_skb(nic->netdev, ETH_DATA_LEN))) {
 		err = -ENOMEM;
@@ -2230,9 +2179,9 @@ static void e100_get_regs(struct net_device *netdev,
 	int i;
 
 	regs->version = (1 << 24) | nic->rev_id;
-	buff[0] = readb(&nic->csr->scb.cmd_hi) << 24 |
-		readb(&nic->csr->scb.cmd_lo) << 16 |
-		readw(&nic->csr->scb.status);
+	buff[0] = ioread8(&nic->csr->scb.cmd_hi) << 24 |
+		ioread8(&nic->csr->scb.cmd_lo) << 16 |
+		ioread16(&nic->csr->scb.status);
 	for(i = E100_PHY_REGS; i >= 0; i--)
 		buff[1 + E100_PHY_REGS - i] =
 			mdio_read(netdev, nic->mii.phy_id, i);
@@ -2604,7 +2553,10 @@ static int __devinit e100_probe(struct pci_dev *pdev,
 	SET_MODULE_OWNER(netdev);
 	SET_NETDEV_DEV(netdev, &pdev->dev);
 
-	nic->csr = ioremap(pci_resource_start(pdev, 0), sizeof(struct csr));
+	if (use_io)
+		DPRINTK(PROBE, INFO, "using i/o access mode\n");
+
+	nic->csr = pci_iomap(pdev, (use_io ? 1 : 0), sizeof(struct csr));
 	if(!nic->csr) {
 		DPRINTK(PROBE, ERR, "Cannot map device registers, aborting.\n");
 		err = -ENOMEM;
@@ -2651,11 +2603,16 @@ static int __devinit e100_probe(struct pci_dev *pdev,
 
 	memcpy(netdev->dev_addr, nic->eeprom, ETH_ALEN);
 	memcpy(netdev->perm_addr, nic->eeprom, ETH_ALEN);
-	if(!is_valid_ether_addr(netdev->perm_addr)) {
-		DPRINTK(PROBE, ERR, "Invalid MAC address from "
-			"EEPROM, aborting.\n");
-		err = -EAGAIN;
-		goto err_out_free;
+	if (!is_valid_ether_addr(netdev->perm_addr)) {
+		if (!eeprom_bad_csum_allow) {
+			DPRINTK(PROBE, ERR, "Invalid MAC address from "
+			        "EEPROM, aborting.\n");
+			err = -EAGAIN;
+			goto err_out_free;
+		} else {
+			DPRINTK(PROBE, ERR, "Invalid MAC address from EEPROM, "
+			        "you MUST configure one.\n");
+		}
 	}
 
 	/* Wol magic packet can be enabled from eeprom */
@@ -2676,7 +2633,7 @@ static int __devinit e100_probe(struct pci_dev *pdev,
 
 	DPRINTK(PROBE, INFO, "addr 0x%llx, irq %d, "
 		"MAC addr %02X:%02X:%02X:%02X:%02X:%02X\n",
-		(unsigned long long)pci_resource_start(pdev, 0), pdev->irq,
+		(unsigned long long)pci_resource_start(pdev, use_io ? 1 : 0), pdev->irq,
 		netdev->dev_addr[0], netdev->dev_addr[1], netdev->dev_addr[2],
 		netdev->dev_addr[3], netdev->dev_addr[4], netdev->dev_addr[5]);
 
@@ -2685,7 +2642,7 @@ static int __devinit e100_probe(struct pci_dev *pdev,
 err_out_free:
 	e100_free(nic);
 err_out_iounmap:
-	iounmap(nic->csr);
+	pci_iounmap(pdev, nic->csr);
 err_out_free_res:
 	pci_release_regions(pdev);
 err_out_disable_pdev: