/*
- * 3c90x.c -- This file implements the 3c90x driver for etherboot. Written
- * by Greg Beeley, Greg.Beeley@LightSys.org. Modified by Steve Smith,
- * Steve.Smith@Juno.Com. Alignment bug fix Neil Newell (nn@icenoir.net).
+ * 3c90x.c
+ * NetWatch
*
- * This program Copyright (C) 1999 LightSys Technology Services, Inc.
- * Portions Copyright (C) 1999 Steve Smith
+ * A ring buffer-based, bus-mastering Ethernet driver.
+ *
+ * Derived from Etherboot's 3c90x.c, which is
+ * Copyright (C) 1999 LightSys Technology Services, Inc.
+ * Portions Copyright (C) 1999 Steve Smith
*
* This program may be re-distributed in source or binary form, modified,
* sold, or copied for any purpose, provided that the above copyright message
* PURPOSE or MERCHANTABILITY. Please read the associated documentation
* "3c90x.txt" before compiling and using this driver.
*
- * --------
- *
- * Program written with the assistance of the 3com documentation for
- * the 3c905B-TX card, as well as with some assistance from the 3c59x
- * driver Donald Becker wrote for the Linux kernel, and with some assistance
- * from the remainder of the Etherboot distribution.
- *
* REVISION HISTORY:
*
* v0.10 1-26-1998 GRB Initial implementation.
* Re-wrote poll and transmit for
* better error recovery and heavy
* network traffic operation
- * v2.01 5-26-2003 NN Fixed driver alignment issue which
- * caused system lockups if driver structures
- * not 8-byte aligned.
+ * v2.01 5-26-2003 NN Fixed driver alignment issue which
+ * caused system lockups if driver structures
+ * not 8-byte aligned.
+ * NetWatch0 12-07-2008 JAW Taken out back and shot.
*
*/
#include <paging.h>
#define XCVR_MAGIC (0x5A00)
-/** any single transmission fails after 16 collisions or other errors
- ** this is the number of times to retry the transmission -- this should
- ** be plenty
- **/
-#define XMIT_RETRIES 5
/*** Register definitions for the 3c905 ***/
enum Registers
}
-#ifdef CFG_3C90X_BOOTROM_FIX
-/*** a3c90x_internal_WriteEepromWord - write a physical word of
- *** data to the onboard serial eeprom (not the BIOS prom, but the
- *** nvram in the card that stores, among other things, the MAC
- *** address).
- ***/
-static int
-a3c90x_internal_WriteEepromWord(int ioaddr, int address, unsigned short value)
- {
- /** Select register window **/
- _set_window(ioaddr, winEepromBios0);
-
- /** Verify Eeprom not busy **/
- while((1<<15) & inw(ioaddr + regEepromCommand_0_w));
-
- /** Issue WriteEnable, and wait for completion. **/
- _outw(0x30, ioaddr + regEepromCommand_0_w);
- while((1<<15) & inw(ioaddr + regEepromCommand_0_w));
-
- /** Issue EraseRegister, and wait for completion. **/
- _outw(address + ((0x03)<<6), ioaddr + regEepromCommand_0_w);
- while((1<<15) & inw(ioaddr + regEepromCommand_0_w));
-
- /** Send the new data to the eeprom, and wait for completion. **/
- _outw(value, ioaddr + regEepromData_0_w);
- _outw(0x30, ioaddr + regEepromCommand_0_w);
- while((1<<15) & inw(ioaddr + regEepromCommand_0_w));
-
- /** Burn the new data into the eeprom, and wait for completion. **/
- _outw(address + ((0x01)<<6), ioaddr + regEepromCommand_0_w);
- while((1<<15) & inw(ioaddr + regEepromCommand_0_w));
-
- return 0;
- }
-#endif
-
-#ifdef CFG_3C90X_BOOTROM_FIX
-/*** a3c90x_internal_WriteEeprom - write data to the serial eeprom,
- *** and re-compute the eeprom checksum.
- ***/
-static int
-a3c90x_internal_WriteEeprom(int ioaddr, int address, unsigned short value)
- {
- int cksum = 0,v;
- int i;
- int maxAddress, cksumAddress;
-
- if (INF_3C90X.isBrev)
- {
- maxAddress=0x1f;
- cksumAddress=0x20;
- }
- else
- {
- maxAddress=0x16;
- cksumAddress=0x17;
- }
-
- /** Write the value. **/
- if (a3c90x_internal_WriteEepromWord(ioaddr, address, value) == -1)
- return -1;
-
- /** Recompute the checksum. **/
- for(i=0;i<=maxAddress;i++)
- {
- v = a3c90x_internal_ReadEeprom(ioaddr, i);
- cksum ^= (v & 0xFF);
- cksum ^= ((v>>8) & 0xFF);
- }
- /** Write the checksum to the location in the eeprom **/
- if (a3c90x_internal_WriteEepromWord(ioaddr, cksumAddress, cksum) == -1)
- return -1;
-
- return 0;
- }
-#endif
-
/*** a3c90x_reset: exported function that resets the card to its default
*** state. This is so the Linux driver can re-set the card up the way
*** it wants to. If CFG_3C90X_PRESERVE_XCVR is defined, then the reset will
/***************************** Receive routines *****************************/
#define MAX_RECV_SIZE 1536
-#define RECV_BUFS 16
+#define RECV_BUFS 32
static rxdesc_t rxdescs[RECV_BUFS];
static struct pbuf *rxpbufs[RECV_BUFS] = {0,};
outputf("3c90x: WARNING: Ran out of rx slots");
}
+ _issue_command(INF_3C90X.IOAddr, cmdStallCtl, 1 /* Unstall upload */);
}
/* _recv polls the ring buffer to see if any packets are available. If any
eeprom[i] = a3c90x_internal_ReadEeprom(INF_3C90X.IOAddr, i);
}
-#ifdef CFG_3C90X_BOOTROM_FIX
- /** Set xcvrSelect in InternalConfig in eeprom. **/
- /* only necessary for 3c905b revision cards with boot PROM bug!!! */
- a3c90x_internal_WriteEeprom(INF_3C90X.IOAddr, 0x13, 0x0160);
-#endif
-
#ifdef CFG_3C90X_XCVR
if (CFG_3C90X_XCVR == 255)
{
}
}
- /** Print identification message **/
-#ifdef CFG_3C90X_BOOTROM_FIX
- if (INF_3C90X.isBrev)
- {
- outputf("NOTE: 3c905b bootrom fix enabled; has side "
- "effects. See 3c90x.txt for info.");
- }
-#endif
-
/** Retrieve the Hardware address and print it on the screen. **/
INF_3C90X.HWAddr[0] = eeprom[HWADDR_OFFSET + 0]>>8;
INF_3C90X.HWAddr[1] = eeprom[HWADDR_OFFSET + 0]&0xFF;
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