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SubjectPATCH: [my] sundance #5
next sundance patch in the series, updated with Jason's patches

Note, with the patching of Configure.help this is a 2.4-specific patch.
diff -Nru a/Documentation/Configure.help b/Documentation/Configure.help
--- a/Documentation/Configure.help Thu Sep 19 17:32:40 2002
+++ b/Documentation/Configure.help Thu Sep 19 17:32:41 2002
@@ -11799,6 +11799,14 @@
say M here and read <file:Documentation/modules.txt>. The module
will be called sundance.o.

+Sundance Alta memory-mapped I/O support
+CONFIG_SUNDANCE_MMIO
+ Enable memory-mapped I/O for interaction with Sundance NIC registers.
+ Do NOT enable this by default, PIO (enabled when MMIO is disabled)
+ is known to solve bugs on certain chips.
+
+ If unsure, say N.
+
Sun3/Sun3x on-board LANCE support
CONFIG_SUN3LANCE
Most Sun3 and Sun3x motherboards (including the 3/50, 3/60 and 3/80)
diff -Nru a/drivers/net/Config.in b/drivers/net/Config.in
--- a/drivers/net/Config.in Thu Sep 19 17:32:40 2002
+++ b/drivers/net/Config.in Thu Sep 19 17:32:40 2002
@@ -192,6 +192,7 @@
dep_tristate ' SiS 900/7016 PCI Fast Ethernet Adapter support' CONFIG_SIS900 $CONFIG_PCI
dep_tristate ' SMC EtherPower II' CONFIG_EPIC100 $CONFIG_PCI
dep_tristate ' Sundance Alta support' CONFIG_SUNDANCE $CONFIG_PCI
+ dep_mbool ' Use MMIO instead of PIO' CONFIG_SUNDANCE_MMIO $CONFIG_SUNDANCE
if [ "$CONFIG_PCI" = "y" -o "$CONFIG_EISA" = "y" ]; then
tristate ' TI ThunderLAN support' CONFIG_TLAN
fi
diff -Nru a/drivers/net/sundance.c b/drivers/net/sundance.c
--- a/drivers/net/sundance.c Thu Sep 19 17:32:40 2002
+++ b/drivers/net/sundance.c Thu Sep 19 17:32:40 2002
@@ -33,10 +33,11 @@
- Tx timeout recovery
- More support for ethtool.

- Version LK1.04a (jgarzik):
+ Version LK1.04a:
- Remove unused/constant members from struct pci_id_info
(which then allows removal of 'drv_flags' from private struct)
- - If no phy is found, fail to load that board
+ (jgarzik)
+ - If no phy is found, fail to load that board (jgarzik)
- Always start phy id scan at id 1 to avoid problems (Donald Becker)
- Autodetect where mii_preable_required is needed,
default to not needed. (Donald Becker)
@@ -45,18 +46,25 @@
- Remove mii_preamble_required module parameter (Donald Becker)
- Add per-interface mii_preamble_required (setting is autodetected)
(Donald Becker)
- - Remove unnecessary cast from void pointer
- - Re-align comments in private struct
+ - Remove unnecessary cast from void pointer (jgarzik)
+ - Re-align comments in private struct (jgarzik)

- Version LK1.04c:
+ Version LK1.04c (jgarzik):
- Support bitmapped message levels (NETIF_MSG_xxx), and the
two ethtool ioctls that get/set them
- Don't hand-code MII ethtool support, use standard API/lib

+ Version LK1.04d:
+ - Merge from Donald Becker's sundance.c: (Jason Lunz)
+ * proper support for variably-sized MTUs
+ * default to PIO, to fix chip bugs
+ - Add missing unregister_netdev (Jason Lunz)
+ - Add CONFIG_SUNDANCE_MMIO config option (jgarzik)
+
*/

#define DRV_NAME "sundance"
-#define DRV_VERSION "1.01+LK1.04c"
+#define DRV_VERSION "1.01+LK1.04d"
#define DRV_RELDATE "19-Sep-2002"


@@ -65,7 +73,6 @@
static int debug = 1; /* 1 normal messages, 0 quiet .. 7 verbose. */
/* Maximum events (Rx packets, etc.) to handle at each interrupt. */
static int max_interrupt_work = 0;
-static int mtu;
/* Maximum number of multicast addresses to filter (vs. rx-all-multicast).
Typical is a 64 element hash table based on the Ethernet CRC. */
static int multicast_filter_limit = 32;
@@ -162,13 +169,11 @@
MODULE_LICENSE("GPL");

MODULE_PARM(max_interrupt_work, "i");
-MODULE_PARM(mtu, "i");
MODULE_PARM(debug, "i");
MODULE_PARM(rx_copybreak, "i");
MODULE_PARM(media, "1-" __MODULE_STRING(MAX_UNITS) "s");
MODULE_PARM(flowctrl, "i");
MODULE_PARM_DESC(max_interrupt_work, "Sundance Alta maximum events handled per interrupt");
-MODULE_PARM_DESC(mtu, "Sundance Alta MTU (all boards)");
MODULE_PARM_DESC(debug, "Sundance Alta debug level (0-5)");
MODULE_PARM_DESC(rx_copybreak, "Sundance Alta copy breakpoint for copy-only-tiny-frames");
MODULE_PARM_DESC(flowctrl, "Sundance Alta flow control [0|1]");
@@ -247,6 +252,10 @@

*/

+/* Work-around for Kendin chip bugs. */
+#ifndef CONFIG_SUNDANCE_MMIO
+#define USE_IO_OPS 1
+#endif

static struct pci_device_id sundance_pci_tbl[] __devinitdata = {
{0x1186, 0x1002, 0x1186, 0x1002, 0, 0, 0},
@@ -329,7 +338,7 @@
MACCtrl0 = 0x50,
MACCtrl1 = 0x52,
StationAddr = 0x54,
- MaxTxSize = 0x5A,
+ MaxFrameSize = 0x5A,
RxMode = 0x5c,
MIICtrl = 0x5e,
MulticastFilter0 = 0x60,
@@ -457,6 +466,7 @@
IntrDrvRqst | IntrTxDone | StatsMax | \
LinkChange)

+static int change_mtu(struct net_device *dev, int new_mtu);
static int eeprom_read(long ioaddr, int location);
static int mdio_read(struct net_device *dev, int phy_id, int location);
static void mdio_write(struct net_device *dev, int phy_id, int location, int value);
@@ -563,11 +573,9 @@
dev->do_ioctl = &netdev_ioctl;
dev->tx_timeout = &tx_timeout;
dev->watchdog_timeo = TX_TIMEOUT;
+ dev->change_mtu = &change_mtu;
pci_set_drvdata(pdev, dev);

- if (mtu)
- dev->mtu = mtu;
-
i = register_netdev(dev);
if (i)
goto err_out_unmap_rx;
@@ -599,7 +607,7 @@
if (phy_idx == 0) {
printk(KERN_INFO "%s: No MII transceiver found, aborting. ASIC status %x\n",
dev->name, readl(ioaddr + ASICCtrl));
- goto err_out_unmap_rx;
+ goto err_out_unregister;
}

np->mii_if.phy_id = np->phys[0];
@@ -673,6 +681,8 @@
card_idx++;
return 0;

+err_out_unregister:
+ unregister_netdev(dev);
err_out_unmap_rx:
pci_free_consistent(pdev, RX_TOTAL_SIZE, np->rx_ring, np->rx_ring_dma);
err_out_unmap_tx:
@@ -689,6 +699,15 @@
return -ENODEV;
}

+static int change_mtu(struct net_device *dev, int new_mtu)
+{
+ if ((new_mtu < 68) || (new_mtu > 8191)) /* Set by RxDMAFrameLen */
+ return -EINVAL;
+ if (netif_running(dev))
+ return -EBUSY;
+ dev->mtu = new_mtu;
+ return 0;
+}

/* Read the EEPROM and MII Management Data I/O (MDIO) interfaces. */
static int __devinit eeprom_read(long ioaddr, int location)
@@ -818,6 +837,10 @@
writeb(dev->dev_addr[i], ioaddr + StationAddr + i);

/* Initialize other registers. */
+ writew(dev->mtu + 14, ioaddr + MaxFrameSize);
+ if (dev->mtu > 2047)
+ writel(readl(ioaddr + ASICCtrl) | 0x0C, ioaddr + ASICCtrl);
+
/* Configure the PCI bus bursts and FIFO thresholds. */

if (dev->if_port == 0)
@@ -950,7 +973,7 @@
np->cur_rx = np->cur_tx = 0;
np->dirty_rx = np->dirty_tx = 0;

- np->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32);
+ np->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 36);

/* Initialize all Rx descriptors. */
for (i = 0; i < RX_RING_SIZE; i++) {
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