132 lines
3.9 KiB
Diff
132 lines
3.9 KiB
Diff
From 3c7089199784e3d53054869108cfa5666b42e7ea Mon Sep 17 00:00:00 2001
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From: John Crispin <blogic@openwrt.org>
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Date: Fri, 3 Aug 2012 10:28:51 +0200
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Subject: [PATCH 22/25] owrt dm9000 polling
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---
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drivers/net/ethernet/davicom/dm9000.c | 50 +++++++++++++++++++++++++++-----
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1 files changed, 42 insertions(+), 8 deletions(-)
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diff --git a/drivers/net/ethernet/davicom/dm9000.c b/drivers/net/ethernet/davicom/dm9000.c
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index f801754..258a0c3 100644
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--- a/drivers/net/ethernet/davicom/dm9000.c
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+++ b/drivers/net/ethernet/davicom/dm9000.c
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@@ -19,6 +19,7 @@
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* Sascha Hauer <s.hauer@pengutronix.de>
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*/
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+#define DEBUG
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#include <linux/module.h>
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#include <linux/ioport.h>
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#include <linux/netdevice.h>
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@@ -132,6 +133,8 @@ typedef struct board_info {
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struct delayed_work phy_poll;
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struct net_device *ndev;
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+ struct delayed_work irq_poll; /* for use in irq polling mode */
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+
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spinlock_t lock;
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struct mii_if_info mii;
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@@ -845,6 +848,8 @@ static void dm9000_timeout(struct net_device *dev)
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netif_stop_queue(dev);
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dm9000_reset(db);
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dm9000_init_dm9000(dev);
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+ dm9000_reset(db);
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+ dm9000_init_dm9000(dev);
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/* We can accept TX packets again */
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dev->trans_start = jiffies; /* prevent tx timeout */
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netif_wake_queue(dev);
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@@ -916,6 +921,12 @@ dm9000_start_xmit(struct sk_buff *skb, struct net_device *dev)
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/* free this SKB */
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dev_kfree_skb(skb);
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+ /* directly poll afterwards */
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+ if (dev->irq == -1) {
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+ cancel_delayed_work(&db->irq_poll);
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+ schedule_delayed_work(&db->irq_poll, 1);
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+ }
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+
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return NETDEV_TX_OK;
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}
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@@ -1157,6 +1168,18 @@ static void dm9000_poll_controller(struct net_device *dev)
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}
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#endif
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+static void dm9000_poll_irq(struct work_struct *w)
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+{
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+ struct delayed_work *dw = to_delayed_work(w);
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+ board_info_t *db = container_of(dw, board_info_t, irq_poll);
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+ struct net_device *ndev = db->ndev;
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+
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+ dm9000_interrupt(0, ndev);
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+
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+ if (netif_running(ndev))
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+ schedule_delayed_work(&db->irq_poll, HZ /100);
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+}
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+
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/*
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* Open the interface.
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* The interface is opened whenever "ifconfig" actives it.
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@@ -1170,14 +1193,15 @@ dm9000_open(struct net_device *dev)
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if (netif_msg_ifup(db))
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dev_dbg(db->dev, "enabling %s\n", dev->name);
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- /* If there is no IRQ type specified, default to something that
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- * may work, and tell the user that this is a problem */
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+ if (dev->irq != -1) {
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+ /* If there is no IRQ type specified, default to something that
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+ * may work, and tell the user that this is a problem */
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- if (irqflags == IRQF_TRIGGER_NONE)
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- dev_warn(db->dev, "WARNING: no IRQ resource flags set.\n");
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-
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- irqflags |= IRQF_SHARED;
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+ if (irqflags == IRQF_TRIGGER_NONE)
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+ dev_warn(db->dev, "WARNING: no IRQ resource flags set.\n");
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+ irqflags |= IRQF_SHARED;
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+ }
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/* GPIO0 on pre-activate PHY, Reg 1F is not set by reset */
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iow(db, DM9000_GPR, 0); /* REG_1F bit0 activate phyxcer */
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mdelay(1); /* delay needs by DM9000B */
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@@ -1186,8 +1210,14 @@ dm9000_open(struct net_device *dev)
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dm9000_reset(db);
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dm9000_init_dm9000(dev);
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- if (request_irq(dev->irq, dm9000_interrupt, irqflags, dev->name, dev))
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- return -EAGAIN;
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+ /* testing: init a second time */
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+ dm9000_reset(db);
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+ dm9000_init_dm9000(dev);
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+
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+ if (dev->irq != -1) {
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+ if (request_irq(dev->irq, dm9000_interrupt, irqflags, dev->name, dev))
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+ return -EAGAIN;
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+ }
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/* Init driver variable */
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db->dbug_cnt = 0;
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@@ -1195,6 +1225,9 @@ dm9000_open(struct net_device *dev)
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mii_check_media(&db->mii, netif_msg_link(db), 1);
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netif_start_queue(dev);
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+ if (dev->irq == -1)
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+ schedule_delayed_work(&db->irq_poll, HZ / 100);
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+
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dm9000_schedule_poll(db);
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return 0;
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@@ -1392,6 +1425,7 @@ dm9000_probe(struct platform_device *pdev)
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mutex_init(&db->addr_lock);
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INIT_DELAYED_WORK(&db->phy_poll, dm9000_poll_work);
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+ INIT_DELAYED_WORK(&db->irq_poll, dm9000_poll_irq);
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db->addr_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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db->data_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
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--
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1.7.9.1
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