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Support for the third ethernet port on Titan 1.2 (2.4)

To: Linux/MIPS Development <linux-mips@linux-mips.org>, Ralf Baechle <ralf@linux-mips.org>
Subject: Support for the third ethernet port on Titan 1.2 (2.4)
From: Manish Lachwani <mlachwani@mvista.com>
Date: Wed, 20 Oct 2004 16:27:03 -0700
Original-recipient: rfc822;linux-mips@linux-mips.org
Sender: linux-mips-bounce@linux-mips.org
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4.2) Gecko/20040308
Hello Ralf

Attached patch initializes port #2 of the titan 1.2 GE subsystem in 2.4

Thanks
Manish Lachwani

--- drivers/net/titan_ge.c.orig 2004-10-20 15:41:35.000000000 -0700
+++ drivers/net/titan_ge.c      2004-10-20 16:04:16.000000000 -0700
@@ -522,6 +522,8 @@
                                ack &= ~(0x3);
                        if (port_num == 1)
                                ack &= ~(0x300);
+                       if (port_num == 2)
+                               ack &= ~(0x30000);

                        /* Interrupts have been disabled */
                        TITAN_GE_WRITE(TITAN_GE_INTR_XDMA_IE, ack);
@@ -972,6 +974,53 @@
                TITAN_GE_WRITE(0x494c, reg_data);
        }

+       /*
+        * Titan 1.2 does support port #2
+        */
+       if (port_num == 2) {
+               /*
+                * Descriptors in SRAM
+                */
+               reg_data = TITAN_GE_READ(0x48a0);
+
+               reg_data |= 0x100000;
+               reg_data |= (0xff << 10) | (2*(0xff + 1));
+
+               TITAN_GE_WRITE(0x48a0, reg_data);
+               /*
+                * BAV2,BAV and DAV settings for the Rx FIFO
+                */
+               reg_data1 = TITAN_GE_READ(0x48a4);
+               reg_data1 |= ( (0x10 << 20) | (0x10 << 10) | 0x1);
+               TITAN_GE_WRITE(0x48a4, reg_data1);
+
+               reg_data &= ~(0x00100000);
+               reg_data |= 0x200000;
+
+               TITAN_GE_WRITE(0x48a0, reg_data);
+
+               reg_data = TITAN_GE_READ(0x4958);
+               reg_data |= 0x100000;
+
+               TITAN_GE_WRITE(0x4958, reg_data);
+               reg_data |= (0xff << 10) | (2*(0xff + 1));
+               TITAN_GE_WRITE(0x4958, reg_data);
+
+               /*
+                * BAV2, BAV and DAV settings for the Tx FIFO
+                */
+
+               reg_data1 = TITAN_GE_READ(0x495c);
+               reg_data1 = ( (0x1 << 20) | (0x1 << 10) | 0x10);
+
+               TITAN_GE_WRITE(0x495c, reg_data1);
+
+               reg_data &= ~(0x00100000);
+               reg_data |= 0x200000;
+
+               TITAN_GE_WRITE(0x4958, reg_data);
+       }
+
        if (port_num == 2) {
                reg_data = TITAN_GE_READ(0x48a0);

@@ -1094,6 +1143,9 @@
                reg_data1 |= 0x300;
        }

+       if (port_num == 2)
+               reg_data1 |= 0x30000;
+
        TITAN_GE_WRITE(TITAN_GE_INTR_XDMA_IE, reg_data1);
        TITAN_GE_WRITE(0x003c, 0x300);
        
@@ -1974,6 +2026,13 @@
                printk(KERN_ERR "Error registering the TITAN Ethernet"
                                "driver for port 1\n");

+       /*
+        * Titan 1.2 does support port #2
+        */
+       if (titan_ge_init(2))
+               printk(KERN_ERR "Error registering the TITAN Ethernet"
+                               "driver for port 2\n");
+
        return 0;
 }



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