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Re: eepro100 - 802.1q - mtu size

To: Jeff Garzik <jgarzik@xxxxxxxxx>
Subject: Re: eepro100 - 802.1q - mtu size
From: Florian Lohoff <flo@xxxxxxxxxx>
Date: Fri, 17 Jan 2003 20:25:43 +0100
Cc: linux-kernel@xxxxxxxxxxxxxxx, netdev@xxxxxxxxxxx
In-reply-to: <20030117162818.GA1074@gtf.org>
Organization: rfc822 - pure communication
References: <20030117145357.GA1139@paradigm.rfc822.org> <20030117160840.GR12676@stingr.net> <20030117162818.GA1074@gtf.org>
Sender: netdev-bounce@xxxxxxxxxxx
User-agent: Mutt/1.3.28i
On Fri, Jan 17, 2003 at 11:28:18AM -0500, Jeff Garzik wrote:
> Regardless, people still use eepro100, so I would still like to get
> eepro100 doing VLAN.
> 
> The reason why the patch was not accepted is that it changes one magic
> number to another magic number, and without chipset docs, I had no idea
> what either magic number really meant.

I did the basic decoding of the config block - The result from looking
at the gdb output is the same except the IP ARP Filter basic address
which is now the documentations recommended default value and some
mandatory bits which are filled.

I also set the LONGRCV option which enables to use VLANs.

I tried this patch which is against 2.4.20 with IPv4, IPv6, 802.1q and
DHCP so i'd say full feature test ;). I did not try 82557 which
might need different initialization as some bits are unused but that
problem persists from before this change.



--- drivers/net/eepro100.c-vanilla      Fri Jan 17 20:18:17 2003
+++ drivers/net/eepro100.c      Fri Jan 17 20:19:39 2003
@@ -496,19 +496,66 @@
 #endif
 };
 
-/* The parameters for a CmdConfigure operation.
-   There are so many options that it would be difficult to document each bit.
-   We mostly use the default or recommended settings. */
-static const char i82557_config_cmd[CONFIG_DATA_SIZE] = {
-       22, 0x08, 0, 0,  0, 0, 0x32, 0x03,  1, /* 1=Use MII  0=Use AUI */
-       0, 0x2E, 0,  0x60, 0,
-       0xf2, 0x48,   0, 0x40, 0xf2, 0x80,              /* 0x40=Force 
full-duplex */
-       0x3f, 0x05, };
+#define i55x_CB1_TXFIFO_LIMIT(x)       ((x)<<4)
+#define i55x_CB1_RXFIFO_LIMIT(x)       ((x)&0xf)
+
+#define i55x_CB3_MWIENABLE             (1<<0)
+
+#define i55x_CB6_EXTSTATCOUNT          (1<<5)
+#define i55x_CB6_MANDBITS              (1<<1)
+
+#define i55x_CB7_DISCARDSHORT          (1<<0)
+#define        i55x_CB7_UNDERRUNRETRY(x)       ((x)<<1)
+
+#define i557_CB8_USEMII                        (1<<0)
+#define i558_CB8_MANDBITS              i557_CB8_USEMII
+
+#define i55x_CB10_MANDBITS             (3<<1)
+#define i55x_CB10_PREAMBLELEN(x)       ((x&3)<<4)
+#define i55x_CB10_NSAI                 (1<<3)
+
+#define i55x_CB12_INTERFRAMESPACE(x)   ((x)<<4)
+
+#define i558_CB15_MANDBITS             (1<<3|1<<6)
+#define i559_CB16_CRC16                        (1<<5)
+
+#define i558_CB18_MANDBITS             (1<<7)
+#define i558_CB18_FCTHRESH(x)          ((x&7)<<4)
+#define i558_CB18_LONGRCV              (1<<3)
+#define i55x_CB18_PAD                  (1<<1)
+
+#define i558_CB19_TXFC                 (1<<2)
+#define i558_CB19_AUTOFDX              (1<<7)
+
+#define i558_CB20_PRIFCLOC             (1<<5)
+#define i558_CB20_MANDBITS             (0x1f)
+
+#define i558_CB21_MANDBITS             (0x05)
+
 static const char i82558_config_cmd[CONFIG_DATA_SIZE] = {
-       22, 0x08, 0, 1,  0, 0, 0x22, 0x03,  1, /* 1=Use MII  0=Use AUI */
-       0, 0x2E, 0,  0x60, 0x08, 0x88,
-       0x68, 0, 0x40, 0xf2, 0x84,              /* Disable FC */
-       0x31, 0x05, };
+       CONFIG_DATA_SIZE,                               
+       i55x_CB1_TXFIFO_LIMIT(0)|i55x_CB1_RXFIFO_LIMIT(8),      
+       0,              
+       i55x_CB3_MWIENABLE,
+       0,                      
+       0,                              
+       i55x_CB6_EXTSTATCOUNT|i55x_CB6_MANDBITS,
+       i55x_CB7_UNDERRUNRETRY(1)|i55x_CB7_DISCARDSHORT,
+       i558_CB8_MANDBITS,                              
+       0,
+       i55x_CB10_MANDBITS|i55x_CB10_NSAI|i55x_CB10_PREAMBLELEN(2),
+       0,
+       i55x_CB12_INTERFRAMESPACE(6),
+       0x00,                                                   /* cb 13 - ARP 
Filter IP Address Low */
+       0xf2,                                                   /* cb 14 - ARP 
Filter IP Address High */
+       i558_CB15_MANDBITS|i559_CB16_CRC16,                     
+       0,                                                      /* cb 16 - FC 
Delay - LSB */
+       0x40,                                                   /* cb 17 - FC 
Delay - MSB */
+       
i558_CB18_MANDBITS|i558_CB18_FCTHRESH(7)|i558_CB18_LONGRCV|i55x_CB18_PAD,
+       i558_CB19_TXFC|i558_CB19_AUTOFDX,               
+       i558_CB20_PRIFCLOC|i558_CB20_MANDBITS,
+       i558_CB21_MANDBITS,
+       };
 
 /* PHY media interface chips. */
 static const char *phys[] = {

-- 
Florian Lohoff                  flo@xxxxxxxxxx             +49-5201-669912
                        Heisenberg may have been here.

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