source: patches/linux-2.6.20.1-tulip-1.patch@ 2baa4a3

Submitted By: Jim Gifford (patches at jg555 dot com)
Date: 2007-02-04
Initial Package Version: 2.6.20
Origin: Grant Gundler (parisc linux)
Upstream Status: in -mm
Description: Make the tulip drivers follow the chipset specs

diff -Naur linux-2.6.20.orig/drivers/net/tulip/21142.c linux-2.6.20/drivers/net/tulip/21142.c
--- linux-2.6.20.orig/drivers/net/tulip/21142.c 2007-02-04 10:44:54.000000000 -0800
+++ linux-2.6.20/drivers/net/tulip/21142.c      2007-02-04 20:43:32.000000000 -0800
@@ -173,7 +173,7 @@
                        int i;
                        for (i = 0; i < tp->mtable->leafcount; i++)
                                if (tp->mtable->mleaf[i].media == dev->if_port) {
-                                       int startup = ! ((tp->chip_id == DC21143 && (tp->revision == 48 || tp->revision == 65)));
+                                       int startup = ! ((tp->chip_id == DC21143 && tp->revision == 65));
                                        tp->cur_index = i;
                                        tulip_select_media(dev, startup);
                                        setup_done = 1;
diff -Naur linux-2.6.20.orig/drivers/net/tulip/media.c linux-2.6.20/drivers/net/tulip/media.c
--- linux-2.6.20.orig/drivers/net/tulip/media.c 2007-02-04 10:44:54.000000000 -0800
+++ linux-2.6.20/drivers/net/tulip/media.c      2007-02-04 20:43:32.000000000 -0800
@@ -44,8 +44,10 @@
 
 /* MII transceiver control section.
    Read and write the MII registers using software-generated serial
-   MDIO protocol.  See the MII specifications or DP83840A data sheet
-   for details. */
+   MDIO protocol.
+   See IEEE 802.3-2002.pdf (Section 2, Chapter "22.2.4 Management functions")
+   or DP83840A data sheet for more details.
+   */
 
 int tulip_mdio_read(struct net_device *dev, int phy_id, int location)
 {
@@ -261,24 +263,56 @@
                                u16 *reset_sequence = &((u16*)(p+3))[init_length];
                                int reset_length = p[2 + init_length*2];
                                misc_info = reset_sequence + reset_length;
-                               if (startup)
+                               if (startup) {
+                                       int timeout = 10;       /* max 1 ms */
                                        for (i = 0; i < reset_length; i++)
                                                iowrite32(get_u16(&reset_sequence[i]) << 16, ioaddr + CSR15);
+                               
+                                       /* flush posted writes */
+                                       ioread32(ioaddr + CSR15);
+
+                                       /* Sect 3.10.3 in DP83840A.pdf (p39) */
+                                       udelay(500);
+
+                                       /* Section 4.2 in DP83840A.pdf (p43) */
+                                       /* and IEEE 802.3 "22.2.4.1.1 Reset" */
+                                       while (timeout-- &&
+                                               (tulip_mdio_read (dev, phy_num, MII_BMCR) & BMCR_RESET))
+                                               udelay(100);
+                               }
                                for (i = 0; i < init_length; i++)
                                        iowrite32(get_u16(&init_sequence[i]) << 16, ioaddr + CSR15);
+
+                               ioread32(ioaddr + CSR15);       /* flush posted writes */
                        } else {
                                u8 *init_sequence = p + 2;
                                u8 *reset_sequence = p + 3 + init_length;
                                int reset_length = p[2 + init_length];
                                misc_info = (u16*)(reset_sequence + reset_length);
                                if (startup) {
+                                       int timeout = 10;       /* max 1 ms */
                                        iowrite32(mtable->csr12dir | 0x100, ioaddr + CSR12);
                                        for (i = 0; i < reset_length; i++)
                                                iowrite32(reset_sequence[i], ioaddr + CSR12);
+
+                                       /* flush posted writes */
+                                       ioread32(ioaddr + CSR12);
+
+                                       /* Sect 3.10.3 in DP83840A.pdf (p39) */
+                                       udelay(500);
+
+                                       /* Section 4.2 in DP83840A.pdf (p43) */
+                                       /* and IEEE 802.3 "22.2.4.1.1 Reset" */
+                                       while (timeout-- &&
+                                               (tulip_mdio_read (dev, phy_num, MII_BMCR) & BMCR_RESET))
+                                               udelay(100);
                                }
                                for (i = 0; i < init_length; i++)
                                        iowrite32(init_sequence[i], ioaddr + CSR12);
+
+                               ioread32(ioaddr + CSR12);       /* flush posted writes */
                        }
+
                        tmp_info = get_u16(&misc_info[1]);
                        if (tmp_info)
                                tp->advertising[phy_num] = tmp_info | 1;
diff -Naur linux-2.6.20.orig/drivers/net/tulip/tulip.h linux-2.6.20/drivers/net/tulip/tulip.h
--- linux-2.6.20.orig/drivers/net/tulip/tulip.h 2007-02-04 10:44:54.000000000 -0800
+++ linux-2.6.20/drivers/net/tulip/tulip.h      2007-02-04 20:43:32.000000000 -0800
@@ -482,8 +482,11 @@
                        udelay(10);
 
                if (!i)
-                       printk(KERN_DEBUG "%s: tulip_stop_rxtx() failed\n",
-                                       pci_name(tp->pdev));
+                       printk(KERN_DEBUG "%s: tulip_stop_rxtx() failed"
+                                       " (CSR5 0x%x CSR6 0x%x)\n",
+                                       pci_name(tp->pdev),
+                                       ioread32(ioaddr + CSR5),
+                                       ioread32(ioaddr + CSR6));
        }
 }
 
diff -Naur linux-2.6.20.orig/drivers/net/tulip/tulip_core.c linux-2.6.20/drivers/net/tulip/tulip_core.c
--- linux-2.6.20.orig/drivers/net/tulip/tulip_core.c    2007-02-04 10:44:54.000000000 -0800
+++ linux-2.6.20/drivers/net/tulip/tulip_core.c 2007-02-04 20:43:32.000000000 -0800
@@ -21,7 +21,7 @@
 #else
 #define DRV_VERSION    "1.1.14"
 #endif
-#define DRV_RELDATE    "May 11, 2002"
+#define DRV_RELDATE    "December 15, 2004"
 
 
 #include <linux/module.h>