[patch 109/149] dmfe/tulip: Let dmfe handle DM910x except for SPARC on-board chips

[Greg KH]

2.6.32-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Ben Hutchings <ben@xxxxxxxxxxxxxxx>

commit 4d907069bc1b745f4abd4745c332d33098e733b8 upstream.

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@xxxxxxxxxxxxxxx>
Signed-off-by: Grant Grundler <grundler@xxxxxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
 drivers/net/tulip/Kconfig      |    4 ++++
 drivers/net/tulip/dmfe.c       |   21 +++++++++++++++++++++
 drivers/net/tulip/tulip_core.c |   32 +++++++++++++++++++++++++-------
 3 files changed, 50 insertions(+), 7 deletions(-)

--- 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
--- 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 (stru
 	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)
--- 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_tb
 	{ 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 (str
 	}
 
 	/*
-	 *	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


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