dmfe/tulip: Let dmfe handle DM910x except for SPARC on-board chips

The Davicom DM9100 and DM9102 chips are used on the motherboards of
some SPARC systems (supported by the tulip driver) and also in PCI
expansion cards (supported by the dmfe driver).  There is no
difference in the PCI device ids for the two different configurations,
so these drivers both claim the device ids.  However, it is possible
to distinguish the two configurations by the presence of Open Firmware
properties for them, so we do that.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Grant Grundler <grundler@parisc-linux.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 50 insertions, 7 deletions

diff --git a/drivers/net/tulip/Kconfig b/drivers/net/tulip/Kconfig
index 1cc8cf4425d1..516713fa0a05 100644
--- a/drivers/net/tulip/Kconfig
+++ b/drivers/net/tulip/Kconfig
@@ -101,6 +101,10 @@ config TULIP_NAPI_HW_MITIGATION
 
           If in doubt, say Y.
 
+config TULIP_DM910X
+        def_bool y
+        depends on TULIP && SPARC
+
 config DE4X5
         tristate "Generic DECchip & DIGITAL EtherWORKS PCI/EISA"
         depends on PCI || EISA
diff --git a/drivers/net/tulip/dmfe.c b/drivers/net/tulip/dmfe.c
index ad63621913c3..6f44ebf58910 100644
--- a/drivers/net/tulip/dmfe.c
+++ b/drivers/net/tulip/dmfe.c
@@ -92,6 +92,10 @@
 #include <asm/uaccess.h>
 #include <asm/irq.h>
 
+#ifdef CONFIG_TULIP_DM910X
+#include <linux/of.h>
+#endif
+
 
 /* Board/System/Debug information/definition ---------------- */
 #define PCI_DM9132_ID   0x91321282      /* Davicom DM9132 ID */
@@ -377,6 +381,23 @@ static int __devinit dmfe_init_one (struct pci_dev *pdev,
         if (!printed_version++)
                 printk(version);
 
+        /*
+         *      SPARC on-board DM910x chips should be handled by the main
+         *      tulip driver, except for early DM9100s.
+         */
+#ifdef CONFIG_TULIP_DM910X
+        if ((ent->driver_data == PCI_DM9100_ID && pdev->revision >= 0x30) ||
+            ent->driver_data == PCI_DM9102_ID) {
+                struct device_node *dp = pci_device_to_OF_node(pdev);
+
+                if (dp && of_get_property(dp, "local-mac-address", NULL)) {
+                        printk(KERN_INFO DRV_NAME
+                               ": skipping on-board DM910x (use tulip)\n");
+                        return -ENODEV;
+                }
+        }
+#endif
+
         /* Init network device */
         dev = alloc_etherdev(sizeof(*db));
         if (dev == NULL)
diff --git a/drivers/net/tulip/tulip_core.c b/drivers/net/tulip/tulip_core.c
index 0fa3140d65bf..595777dcadb1 100644
--- a/drivers/net/tulip/tulip_core.c
+++ b/drivers/net/tulip/tulip_core.c
@@ -196,9 +196,13 @@ struct tulip_chip_table tulip_tbl[] = {
         | HAS_NWAY | HAS_PCI_MWI, tulip_timer, tulip_media_task },
 
   /* DM910X */
+#ifdef CONFIG_TULIP_DM910X
   { "Davicom DM9102/DM9102A", 128, 0x0001ebef,
         HAS_MII | HAS_MEDIA_TABLE | CSR12_IN_SROM | HAS_ACPI,
         tulip_timer, tulip_media_task },
+#else
+  { NULL },
+#endif
 
   /* RS7112 */
   { "Conexant LANfinity", 256, 0x0001ebef,
@@ -228,8 +232,10 @@ static struct pci_device_id tulip_pci_tbl[] = {
         { 0x1259, 0xa120, PCI_ANY_ID, PCI_ANY_ID, 0, 0, COMET },
         { 0x11F6, 0x9881, PCI_ANY_ID, PCI_ANY_ID, 0, 0, COMPEX9881 },
         { 0x8086, 0x0039, PCI_ANY_ID, PCI_ANY_ID, 0, 0, I21145 },
+#ifdef CONFIG_TULIP_DM910X
         { 0x1282, 0x9100, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DM910X },
         { 0x1282, 0x9102, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DM910X },
+#endif
         { 0x1113, 0x1216, PCI_ANY_ID, PCI_ANY_ID, 0, 0, COMET },
         { 0x1113, 0x1217, PCI_ANY_ID, PCI_ANY_ID, 0, 0, MX98715 },
         { 0x1113, 0x9511, PCI_ANY_ID, PCI_ANY_ID, 0, 0, COMET },
@@ -1299,18 +1305,30 @@ static int __devinit tulip_init_one (struct pci_dev *pdev,
         }
 
         /*
-         *      Early DM9100's need software CRC and the DMFE driver
+         *      DM910x chips should be handled by the dmfe driver, except
+         *      on-board chips on SPARC systems.  Also, early DM9100s need
+         *      software CRC which only the dmfe driver supports.
          */
 
-        if (pdev->vendor == 0x1282 && pdev->device == 0x9100)
-        {
-                /* Read Chip revision */
-                if (pdev->revision < 0x30)
-                {
-                        printk(KERN_ERR PFX "skipping early DM9100 with Crc bug (use dmfe)\n");
+#ifdef CONFIG_TULIP_DM910X
+        if (chip_idx == DM910X) {
+                struct device_node *dp;
+
+                if (pdev->vendor == 0x1282 && pdev->device == 0x9100 &&
+                    pdev->revision < 0x30) {
+                        printk(KERN_INFO PFX
+                               "skipping early DM9100 with Crc bug (use dmfe)\n");
+                        return -ENODEV;
+                }
+
+                dp = pci_device_to_OF_node(pdev);
+                if (!(dp && of_get_property(dp, "local-mac-address", NULL))) {
+                        printk(KERN_INFO PFX
+                               "skipping DM910x expansion card (use dmfe)\n");
                         return -ENODEV;
                 }
         }
+#endif
 
         /*
          *      Looks for early PCI chipsets where people report hangs