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@@ -1,1075 +0,0 @@
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-/*
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-net-3-driver for the IBM LAN Adapter/A
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-
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-This is an extension to the Linux operating system, and is covered by the
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-same GNU General Public License that covers that work.
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-
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-Copyright 1999 by Alfred Arnold (alfred@ccac.rwth-aachen.de,
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- alfred.arnold@lancom.de)
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-
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-This driver is based both on the SK_MCA driver, which is itself based on the
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-SK_G16 and 3C523 driver.
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-
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-paper sources:
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- 'PC Hardware: Aufbau, Funktionsweise, Programmierung' by
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- Hans-Peter Messmer for the basic Microchannel stuff
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-
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- 'Linux Geraetetreiber' by Allesandro Rubini, Kalle Dalheimer
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- for help on Ethernet driver programming
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-
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- 'DP83934CVUL-20/25 MHz SONIC-T Ethernet Controller Datasheet' by National
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- Semiconductor for info on the MAC chip
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-
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- 'LAN Technical Reference Ethernet Adapter Interface Version 1 Release 1.0
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- Document Number SC30-3661-00' by IBM for info on the adapter itself
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-
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- Also see http://www.national.com/analog
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-
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-special acknowledgements to:
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- - Bob Eager for helping me out with documentation from IBM
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- - Jim Shorney for his endless patience with me while I was using
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- him as a beta tester to trace down the address filter bug ;-)
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-
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- Missing things:
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-
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- -> set debug level via ioctl instead of compile-time switches
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- -> I didn't follow the development of the 2.1.x kernels, so my
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- assumptions about which things changed with which kernel version
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- are probably nonsense
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-
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-History:
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- Nov 6th, 1999
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- startup from SK_MCA driver
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- Dec 6th, 1999
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- finally got docs about the card. A big thank you to Bob Eager!
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- Dec 12th, 1999
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- first packet received
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- Dec 13th, 1999
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- recv queue done, tcpdump works
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- Dec 15th, 1999
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- transmission part works
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- Dec 28th, 1999
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- added usage of the isa_functions for Linux 2.3 . Things should
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- still work with 2.0.x....
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- Jan 28th, 2000
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- in Linux 2.2.13, the version.h file mysteriously didn't get
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- included. Added a workaround for this. Furthermore, it now
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- not only compiles as a modules ;-)
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- Jan 30th, 2000
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- newer kernels automatically probe more than one board, so the
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- 'startslot' as a variable is also needed here
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- Apr 12th, 2000
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- the interrupt mask register is not set 'hard' instead of individually
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- setting registers, since this seems to set bits that shouldn't be
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- set
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- May 21st, 2000
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- reset interrupt status immediately after CAM load
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- add a recovery delay after releasing the chip's reset line
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- May 24th, 2000
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- finally found the bug in the address filter setup - damned signed
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- chars!
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- June 1st, 2000
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- corrected version codes, added support for the latest 2.3 changes
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- Oct 28th, 2002
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- cleaned up for the 2.5 tree <alan@lxorguk.ukuu.org.uk>
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-
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- *************************************************************************/
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-
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-#include <linux/kernel.h>
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-#include <linux/string.h>
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-#include <linux/errno.h>
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-#include <linux/ioport.h>
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-#include <linux/interrupt.h>
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-#include <linux/delay.h>
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-#include <linux/time.h>
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-#include <linux/mca.h>
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-#include <linux/module.h>
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-#include <linux/netdevice.h>
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-#include <linux/etherdevice.h>
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-#include <linux/if_ether.h>
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-#include <linux/skbuff.h>
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-#include <linux/bitops.h>
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-
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-#include <asm/processor.h>
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-#include <asm/io.h>
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-
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-#define _IBM_LANA_DRIVER_
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-#include "ibmlana.h"
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-
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-#undef DEBUG
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-
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-#define DRV_NAME "ibmlana"
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-
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-/* ------------------------------------------------------------------------
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- * global static data - not more since we can handle multiple boards and
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- * have to pack all state info into the device struct!
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- * ------------------------------------------------------------------------ */
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-
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-static char *MediaNames[Media_Count] = {
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- "10BaseT", "10Base5", "Unknown", "10Base2"
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-};
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-
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-/* ------------------------------------------------------------------------
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- * private subfunctions
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- * ------------------------------------------------------------------------ */
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-
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-#ifdef DEBUG
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- /* dump all registers */
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-
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-static void dumpregs(struct net_device *dev)
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-{
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- int z;
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-
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- for (z = 0; z < 160; z += 2) {
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- if (!(z & 15))
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- printk("REGS: %04x:", z);
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- printk(" %04x", inw(dev->base_addr + z));
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- if ((z & 15) == 14)
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- printk("\n");
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- }
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-}
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-
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-/* dump parts of shared memory - only needed during debugging */
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-
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-static void dumpmem(struct net_device *dev, u32 start, u32 len)
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-{
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- ibmlana_priv *priv = netdev_priv(dev);
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- int z;
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-
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- printk("Address %04x:\n", start);
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- for (z = 0; z < len; z++) {
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- if ((z & 15) == 0)
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- printk("%04x:", z);
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- printk(" %02x", readb(priv->base + start + z));
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- if ((z & 15) == 15)
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- printk("\n");
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- }
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- if ((z & 15) != 0)
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- printk("\n");
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-}
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-
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-/* print exact time - ditto */
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-
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-static void PrTime(void)
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-{
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- struct timeval tv;
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-
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- do_gettimeofday(&tv);
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- printk("%9d:%06d: ", (int) tv.tv_sec, (int) tv.tv_usec);
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-}
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-#endif /* DEBUG */
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-
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-/* deduce resources out of POS registers */
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-
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-static void getaddrs(struct mca_device *mdev, int *base, int *memlen,
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- int *iobase, int *irq, ibmlana_medium *medium)
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-{
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- u_char pos0, pos1;
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-
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- pos0 = mca_device_read_stored_pos(mdev, 2);
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- pos1 = mca_device_read_stored_pos(mdev, 3);
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-
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- *base = 0xc0000 + ((pos1 & 0xf0) << 9);
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- *memlen = (pos1 & 0x01) ? 0x8000 : 0x4000;
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- *iobase = (pos0 & 0xe0) << 7;
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- switch (pos0 & 0x06) {
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- case 0:
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- *irq = 5;
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- break;
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- case 2:
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- *irq = 15;
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- break;
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- case 4:
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- *irq = 10;
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- break;
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- case 6:
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- *irq = 11;
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- break;
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- }
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- *medium = (pos0 & 0x18) >> 3;
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-}
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-
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-/* wait on register value with mask and timeout */
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-
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-static int wait_timeout(struct net_device *dev, int regoffs, u16 mask,
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- u16 value, int timeout)
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-{
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- unsigned long fin = jiffies + timeout;
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-
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- while (time_before(jiffies,fin))
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- if ((inw(dev->base_addr + regoffs) & mask) == value)
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- return 1;
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-
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- return 0;
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-}
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-
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-
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-/* reset the whole board */
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-
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-static void ResetBoard(struct net_device *dev)
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-{
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- unsigned char bcmval;
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-
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- /* read original board control value */
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-
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- bcmval = inb(dev->base_addr + BCMREG);
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-
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- /* set reset bit for a while */
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-
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- bcmval |= BCMREG_RESET;
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- outb(bcmval, dev->base_addr + BCMREG);
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- udelay(10);
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- bcmval &= ~BCMREG_RESET;
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- outb(bcmval, dev->base_addr + BCMREG);
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-
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- /* switch over to RAM again */
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-
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- bcmval |= BCMREG_RAMEN | BCMREG_RAMWIN;
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- outb(bcmval, dev->base_addr + BCMREG);
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-}
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-
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-/* calculate RAM layout & set up descriptors in RAM */
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-
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-static void InitDscrs(struct net_device *dev)
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-{
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- ibmlana_priv *priv = netdev_priv(dev);
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- u32 addr, baddr, raddr;
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- int z;
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- tda_t tda;
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- rda_t rda;
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- rra_t rra;
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-
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- /* initialize RAM */
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-
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- memset_io(priv->base, 0xaa,
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- dev->mem_start - dev->mem_start); /* XXX: typo? */
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-
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- /* setup n TX descriptors - independent of RAM size */
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-
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- priv->tdastart = addr = 0;
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- priv->txbufstart = baddr = sizeof(tda_t) * TXBUFCNT;
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- for (z = 0; z < TXBUFCNT; z++) {
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- tda.status = 0;
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- tda.config = 0;
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- tda.length = 0;
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- tda.fragcount = 1;
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- tda.startlo = baddr;
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- tda.starthi = 0;
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- tda.fraglength = 0;
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- if (z == TXBUFCNT - 1)
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- tda.link = priv->tdastart;
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- else
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- tda.link = addr + sizeof(tda_t);
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- tda.link |= 1;
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- memcpy_toio(priv->base + addr, &tda, sizeof(tda_t));
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- addr += sizeof(tda_t);
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- baddr += PKTSIZE;
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- }
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-
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- /* calculate how many receive buffers fit into remaining memory */
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-
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- priv->rxbufcnt = (dev->mem_end - dev->mem_start - baddr) / (sizeof(rra_t) + sizeof(rda_t) + PKTSIZE);
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-
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- /* calculate receive addresses */
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-
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- priv->rrastart = raddr = priv->txbufstart + (TXBUFCNT * PKTSIZE);
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- priv->rdastart = addr = priv->rrastart + (priv->rxbufcnt * sizeof(rra_t));
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- priv->rxbufstart = baddr = priv->rdastart + (priv->rxbufcnt * sizeof(rda_t));
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-
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- for (z = 0; z < priv->rxbufcnt; z++) {
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- rra.startlo = baddr;
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- rra.starthi = 0;
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- rra.cntlo = PKTSIZE >> 1;
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- rra.cnthi = 0;
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- memcpy_toio(priv->base + raddr, &rra, sizeof(rra_t));
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-
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- rda.status = 0;
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- rda.length = 0;
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- rda.startlo = 0;
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- rda.starthi = 0;
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- rda.seqno = 0;
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- if (z < priv->rxbufcnt - 1)
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- rda.link = addr + sizeof(rda_t);
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- else
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- rda.link = 1;
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- rda.inuse = 1;
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- memcpy_toio(priv->base + addr, &rda, sizeof(rda_t));
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-
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- baddr += PKTSIZE;
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- raddr += sizeof(rra_t);
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- addr += sizeof(rda_t);
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- }
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-
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- /* initialize current pointers */
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-
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- priv->nextrxdescr = 0;
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- priv->lastrxdescr = priv->rxbufcnt - 1;
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- priv->nexttxdescr = 0;
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- priv->currtxdescr = 0;
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- priv->txusedcnt = 0;
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- memset(priv->txused, 0, sizeof(priv->txused));
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-}
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-
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-/* set up Rx + Tx descriptors in SONIC */
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-
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-static int InitSONIC(struct net_device *dev)
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-{
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- ibmlana_priv *priv = netdev_priv(dev);
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-
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- /* set up start & end of resource area */
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-
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- outw(0, SONIC_URRA);
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- outw(priv->rrastart, dev->base_addr + SONIC_RSA);
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- outw(priv->rrastart + (priv->rxbufcnt * sizeof(rra_t)), dev->base_addr + SONIC_REA);
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- outw(priv->rrastart, dev->base_addr + SONIC_RRP);
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- outw(priv->rrastart, dev->base_addr + SONIC_RWP);
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-
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- /* set EOBC so that only one packet goes into one buffer */
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-
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- outw((PKTSIZE - 4) >> 1, dev->base_addr + SONIC_EOBC);
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-
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- /* let SONIC read the first RRA descriptor */
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-
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- outw(CMDREG_RRRA, dev->base_addr + SONIC_CMDREG);
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- if (!wait_timeout(dev, SONIC_CMDREG, CMDREG_RRRA, 0, 2)) {
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- printk(KERN_ERR "%s: SONIC did not respond on RRRA command - giving up.", dev->name);
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- return 0;
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- }
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-
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- /* point SONIC to the first RDA */
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-
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- outw(0, dev->base_addr + SONIC_URDA);
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- outw(priv->rdastart, dev->base_addr + SONIC_CRDA);
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-
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- /* set upper half of TDA address */
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-
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- outw(0, dev->base_addr + SONIC_UTDA);
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-
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- return 1;
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-}
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-
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-/* stop SONIC so we can reinitialize it */
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-
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-static void StopSONIC(struct net_device *dev)
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-{
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- /* disable interrupts */
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-
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- outb(inb(dev->base_addr + BCMREG) & (~BCMREG_IEN), dev->base_addr + BCMREG);
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- outb(0, dev->base_addr + SONIC_IMREG);
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-
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- /* reset the SONIC */
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-
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- outw(CMDREG_RST, dev->base_addr + SONIC_CMDREG);
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- udelay(10);
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- outw(CMDREG_RST, dev->base_addr + SONIC_CMDREG);
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-}
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-
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-/* initialize card and SONIC for proper operation */
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-
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-static void putcam(camentry_t * cams, int *camcnt, char *addr)
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-{
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- camentry_t *pcam = cams + (*camcnt);
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- u8 *uaddr = (u8 *) addr;
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-
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- pcam->index = *camcnt;
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- pcam->addr0 = (((u16) uaddr[1]) << 8) | uaddr[0];
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- pcam->addr1 = (((u16) uaddr[3]) << 8) | uaddr[2];
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- pcam->addr2 = (((u16) uaddr[5]) << 8) | uaddr[4];
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- (*camcnt)++;
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-}
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-
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-static void InitBoard(struct net_device *dev)
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-{
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- ibmlana_priv *priv = netdev_priv(dev);
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- int camcnt;
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- camentry_t cams[16];
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- u32 cammask;
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- struct netdev_hw_addr *ha;
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- u16 rcrval;
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-
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- /* reset the SONIC */
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-
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- outw(CMDREG_RST, dev->base_addr + SONIC_CMDREG);
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- udelay(10);
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-
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- /* clear all spurious interrupts */
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-
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- outw(inw(dev->base_addr + SONIC_ISREG), dev->base_addr + SONIC_ISREG);
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-
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- /* set up the SONIC's bus interface - constant for this adapter -
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- must be done while the SONIC is in reset */
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-
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- outw(DCREG_USR1 | DCREG_USR0 | DCREG_WC1 | DCREG_DW32, dev->base_addr + SONIC_DCREG);
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- outw(0, dev->base_addr + SONIC_DCREG2);
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-
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- /* remove reset form the SONIC */
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-
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|
|
- outw(0, dev->base_addr + SONIC_CMDREG);
|
|
|
- udelay(10);
|
|
|
-
|
|
|
- /* data sheet requires URRA to be programmed before setting up the CAM contents */
|
|
|
-
|
|
|
- outw(0, dev->base_addr + SONIC_URRA);
|
|
|
-
|
|
|
- /* program the CAM entry 0 to the device address */
|
|
|
-
|
|
|
- camcnt = 0;
|
|
|
- putcam(cams, &camcnt, dev->dev_addr);
|
|
|
-
|
|
|
- /* start putting the multicast addresses into the CAM list. Stop if
|
|
|
- it is full. */
|
|
|
-
|
|
|
- netdev_for_each_mc_addr(ha, dev) {
|
|
|
- putcam(cams, &camcnt, ha->addr);
|
|
|
- if (camcnt == 16)
|
|
|
- break;
|
|
|
- }
|
|
|
-
|
|
|
- /* calculate CAM mask */
|
|
|
-
|
|
|
- cammask = (1 << camcnt) - 1;
|
|
|
-
|
|
|
- /* feed CDA into SONIC, initialize RCR value (always get broadcasts) */
|
|
|
-
|
|
|
- memcpy_toio(priv->base, cams, sizeof(camentry_t) * camcnt);
|
|
|
- memcpy_toio(priv->base + (sizeof(camentry_t) * camcnt), &cammask, sizeof(cammask));
|
|
|
-
|
|
|
-#ifdef DEBUG
|
|
|
- printk("CAM setup:\n");
|
|
|
- dumpmem(dev, 0, sizeof(camentry_t) * camcnt + sizeof(cammask));
|
|
|
-#endif
|
|
|
-
|
|
|
- outw(0, dev->base_addr + SONIC_CAMPTR);
|
|
|
- outw(camcnt, dev->base_addr + SONIC_CAMCNT);
|
|
|
- outw(CMDREG_LCAM, dev->base_addr + SONIC_CMDREG);
|
|
|
- if (!wait_timeout(dev, SONIC_CMDREG, CMDREG_LCAM, 0, 2)) {
|
|
|
- printk(KERN_ERR "%s:SONIC did not respond on LCAM command - giving up.", dev->name);
|
|
|
- return;
|
|
|
- } else {
|
|
|
- /* clear interrupt condition */
|
|
|
-
|
|
|
- outw(ISREG_LCD, dev->base_addr + SONIC_ISREG);
|
|
|
-
|
|
|
-#ifdef DEBUG
|
|
|
- printk("Loading CAM done, address pointers %04x:%04x\n",
|
|
|
- inw(dev->base_addr + SONIC_URRA),
|
|
|
- inw(dev->base_addr + SONIC_CAMPTR));
|
|
|
- {
|
|
|
- int z;
|
|
|
-
|
|
|
- printk("\n-->CAM: PTR %04x CNT %04x\n",
|
|
|
- inw(dev->base_addr + SONIC_CAMPTR),
|
|
|
- inw(dev->base_addr + SONIC_CAMCNT));
|
|
|
- outw(CMDREG_RST, dev->base_addr + SONIC_CMDREG);
|
|
|
- for (z = 0; z < camcnt; z++) {
|
|
|
- outw(z, dev->base_addr + SONIC_CAMEPTR);
|
|
|
- printk("Entry %d: %04x %04x %04x\n", z,
|
|
|
- inw(dev->base_addr + SONIC_CAMADDR0),
|
|
|
- inw(dev->base_addr + SONIC_CAMADDR1),
|
|
|
- inw(dev->base_addr + SONIC_CAMADDR2));
|
|
|
- }
|
|
|
- outw(0, dev->base_addr + SONIC_CMDREG);
|
|
|
- }
|
|
|
-#endif
|
|
|
- }
|
|
|
-
|
|
|
- rcrval = RCREG_BRD | RCREG_LB_NONE;
|
|
|
-
|
|
|
- /* if still multicast addresses left or ALLMULTI is set, set the multicast
|
|
|
- enable bit */
|
|
|
-
|
|
|
- if ((dev->flags & IFF_ALLMULTI) || netdev_mc_count(dev) > camcnt)
|
|
|
- rcrval |= RCREG_AMC;
|
|
|
-
|
|
|
- /* promiscuous mode ? */
|
|
|
-
|
|
|
- if (dev->flags & IFF_PROMISC)
|
|
|
- rcrval |= RCREG_PRO;
|
|
|
-
|
|
|
- /* program receive mode */
|
|
|
-
|
|
|
- outw(rcrval, dev->base_addr + SONIC_RCREG);
|
|
|
-#ifdef DEBUG
|
|
|
- printk("\nRCRVAL: %04x\n", rcrval);
|
|
|
-#endif
|
|
|
-
|
|
|
- /* set up descriptors in shared memory + feed them into SONIC registers */
|
|
|
-
|
|
|
- InitDscrs(dev);
|
|
|
- if (!InitSONIC(dev))
|
|
|
- return;
|
|
|
-
|
|
|
- /* reset all pending interrupts */
|
|
|
-
|
|
|
- outw(0xffff, dev->base_addr + SONIC_ISREG);
|
|
|
-
|
|
|
- /* enable transmitter + receiver interrupts */
|
|
|
-
|
|
|
- outw(CMDREG_RXEN, dev->base_addr + SONIC_CMDREG);
|
|
|
- outw(IMREG_PRXEN | IMREG_RBEEN | IMREG_PTXEN | IMREG_TXEREN, dev->base_addr + SONIC_IMREG);
|
|
|
-
|
|
|
- /* turn on card interrupts */
|
|
|
-
|
|
|
- outb(inb(dev->base_addr + BCMREG) | BCMREG_IEN, dev->base_addr + BCMREG);
|
|
|
-
|
|
|
-#ifdef DEBUG
|
|
|
- printk("Register dump after initialization:\n");
|
|
|
- dumpregs(dev);
|
|
|
-#endif
|
|
|
-}
|
|
|
-
|
|
|
-/* start transmission of a descriptor */
|
|
|
-
|
|
|
-static void StartTx(struct net_device *dev, int descr)
|
|
|
-{
|
|
|
- ibmlana_priv *priv = netdev_priv(dev);
|
|
|
- int addr;
|
|
|
-
|
|
|
- addr = priv->tdastart + (descr * sizeof(tda_t));
|
|
|
-
|
|
|
- /* put descriptor address into SONIC */
|
|
|
-
|
|
|
- outw(addr, dev->base_addr + SONIC_CTDA);
|
|
|
-
|
|
|
- /* trigger transmitter */
|
|
|
-
|
|
|
- priv->currtxdescr = descr;
|
|
|
- outw(CMDREG_TXP, dev->base_addr + SONIC_CMDREG);
|
|
|
-}
|
|
|
-
|
|
|
-/* ------------------------------------------------------------------------
|
|
|
- * interrupt handler(s)
|
|
|
- * ------------------------------------------------------------------------ */
|
|
|
-
|
|
|
-/* receive buffer area exhausted */
|
|
|
-
|
|
|
-static void irqrbe_handler(struct net_device *dev)
|
|
|
-{
|
|
|
- ibmlana_priv *priv = netdev_priv(dev);
|
|
|
-
|
|
|
- /* point the SONIC back to the RRA start */
|
|
|
-
|
|
|
- outw(priv->rrastart, dev->base_addr + SONIC_RRP);
|
|
|
- outw(priv->rrastart, dev->base_addr + SONIC_RWP);
|
|
|
-}
|
|
|
-
|
|
|
-/* receive interrupt */
|
|
|
-
|
|
|
-static void irqrx_handler(struct net_device *dev)
|
|
|
-{
|
|
|
- ibmlana_priv *priv = netdev_priv(dev);
|
|
|
- rda_t rda;
|
|
|
- u32 rdaaddr, lrdaaddr;
|
|
|
-
|
|
|
- /* loop until ... */
|
|
|
-
|
|
|
- while (1) {
|
|
|
- /* read descriptor that was next to be filled by SONIC */
|
|
|
-
|
|
|
- rdaaddr = priv->rdastart + (priv->nextrxdescr * sizeof(rda_t));
|
|
|
- lrdaaddr = priv->rdastart + (priv->lastrxdescr * sizeof(rda_t));
|
|
|
- memcpy_fromio(&rda, priv->base + rdaaddr, sizeof(rda_t));
|
|
|
-
|
|
|
- /* iron out upper word halves of fields we use - SONIC will duplicate
|
|
|
- bits 0..15 to 16..31 */
|
|
|
-
|
|
|
- rda.status &= 0xffff;
|
|
|
- rda.length &= 0xffff;
|
|
|
- rda.startlo &= 0xffff;
|
|
|
-
|
|
|
- /* stop if the SONIC still owns it, i.e. there is no data for us */
|
|
|
-
|
|
|
- if (rda.inuse)
|
|
|
- break;
|
|
|
-
|
|
|
- /* good packet? */
|
|
|
-
|
|
|
- else if (rda.status & RCREG_PRX) {
|
|
|
- struct sk_buff *skb;
|
|
|
-
|
|
|
- /* fetch buffer */
|
|
|
-
|
|
|
- skb = netdev_alloc_skb(dev, rda.length + 2);
|
|
|
- if (skb == NULL)
|
|
|
- dev->stats.rx_dropped++;
|
|
|
- else {
|
|
|
- /* copy out data */
|
|
|
-
|
|
|
- memcpy_fromio(skb_put(skb, rda.length),
|
|
|
- priv->base +
|
|
|
- rda.startlo, rda.length);
|
|
|
-
|
|
|
- /* set up skb fields */
|
|
|
-
|
|
|
- skb->protocol = eth_type_trans(skb, dev);
|
|
|
- skb_checksum_none_assert(skb);
|
|
|
-
|
|
|
- /* bookkeeping */
|
|
|
- dev->stats.rx_packets++;
|
|
|
- dev->stats.rx_bytes += rda.length;
|
|
|
-
|
|
|
- /* pass to the upper layers */
|
|
|
- netif_rx(skb);
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- /* otherwise check error status bits and increase statistics */
|
|
|
-
|
|
|
- else {
|
|
|
- dev->stats.rx_errors++;
|
|
|
- if (rda.status & RCREG_FAER)
|
|
|
- dev->stats.rx_frame_errors++;
|
|
|
- if (rda.status & RCREG_CRCR)
|
|
|
- dev->stats.rx_crc_errors++;
|
|
|
- }
|
|
|
-
|
|
|
- /* descriptor processed, will become new last descriptor in queue */
|
|
|
-
|
|
|
- rda.link = 1;
|
|
|
- rda.inuse = 1;
|
|
|
- memcpy_toio(priv->base + rdaaddr, &rda,
|
|
|
- sizeof(rda_t));
|
|
|
-
|
|
|
- /* set up link and EOL = 0 in currently last descriptor. Only write
|
|
|
- the link field since the SONIC may currently already access the
|
|
|
- other fields. */
|
|
|
-
|
|
|
- memcpy_toio(priv->base + lrdaaddr + 20, &rdaaddr, 4);
|
|
|
-
|
|
|
- /* advance indices */
|
|
|
-
|
|
|
- priv->lastrxdescr = priv->nextrxdescr;
|
|
|
- if ((++priv->nextrxdescr) >= priv->rxbufcnt)
|
|
|
- priv->nextrxdescr = 0;
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-/* transmit interrupt */
|
|
|
-
|
|
|
-static void irqtx_handler(struct net_device *dev)
|
|
|
-{
|
|
|
- ibmlana_priv *priv = netdev_priv(dev);
|
|
|
- tda_t tda;
|
|
|
-
|
|
|
- /* fetch descriptor (we forgot the size ;-) */
|
|
|
- memcpy_fromio(&tda, priv->base + priv->tdastart + (priv->currtxdescr * sizeof(tda_t)), sizeof(tda_t));
|
|
|
-
|
|
|
- /* update statistics */
|
|
|
- dev->stats.tx_packets++;
|
|
|
- dev->stats.tx_bytes += tda.length;
|
|
|
-
|
|
|
- /* update our pointers */
|
|
|
- priv->txused[priv->currtxdescr] = 0;
|
|
|
- priv->txusedcnt--;
|
|
|
-
|
|
|
- /* if there are more descriptors present in RAM, start them */
|
|
|
- if (priv->txusedcnt > 0)
|
|
|
- StartTx(dev, (priv->currtxdescr + 1) % TXBUFCNT);
|
|
|
-
|
|
|
- /* tell the upper layer we can go on transmitting */
|
|
|
- netif_wake_queue(dev);
|
|
|
-}
|
|
|
-
|
|
|
-static void irqtxerr_handler(struct net_device *dev)
|
|
|
-{
|
|
|
- ibmlana_priv *priv = netdev_priv(dev);
|
|
|
- tda_t tda;
|
|
|
-
|
|
|
- /* fetch descriptor to check status */
|
|
|
- memcpy_fromio(&tda, priv->base + priv->tdastart + (priv->currtxdescr * sizeof(tda_t)), sizeof(tda_t));
|
|
|
-
|
|
|
- /* update statistics */
|
|
|
- dev->stats.tx_errors++;
|
|
|
- if (tda.status & (TCREG_NCRS | TCREG_CRSL))
|
|
|
- dev->stats.tx_carrier_errors++;
|
|
|
- if (tda.status & TCREG_EXC)
|
|
|
- dev->stats.tx_aborted_errors++;
|
|
|
- if (tda.status & TCREG_OWC)
|
|
|
- dev->stats.tx_window_errors++;
|
|
|
- if (tda.status & TCREG_FU)
|
|
|
- dev->stats.tx_fifo_errors++;
|
|
|
-
|
|
|
- /* update our pointers */
|
|
|
- priv->txused[priv->currtxdescr] = 0;
|
|
|
- priv->txusedcnt--;
|
|
|
-
|
|
|
- /* if there are more descriptors present in RAM, start them */
|
|
|
- if (priv->txusedcnt > 0)
|
|
|
- StartTx(dev, (priv->currtxdescr + 1) % TXBUFCNT);
|
|
|
-
|
|
|
- /* tell the upper layer we can go on transmitting */
|
|
|
- netif_wake_queue(dev);
|
|
|
-}
|
|
|
-
|
|
|
-/* general interrupt entry */
|
|
|
-
|
|
|
-static irqreturn_t irq_handler(int dummy, void *device)
|
|
|
-{
|
|
|
- struct net_device *dev = device;
|
|
|
- u16 ival;
|
|
|
-
|
|
|
- /* in case we're not meant... */
|
|
|
- if (!(inb(dev->base_addr + BCMREG) & BCMREG_IPEND))
|
|
|
- return IRQ_NONE;
|
|
|
-
|
|
|
- /* loop through the interrupt bits until everything is clear */
|
|
|
- while (1) {
|
|
|
- ival = inw(dev->base_addr + SONIC_ISREG);
|
|
|
-
|
|
|
- if (ival & ISREG_RBE) {
|
|
|
- irqrbe_handler(dev);
|
|
|
- outw(ISREG_RBE, dev->base_addr + SONIC_ISREG);
|
|
|
- }
|
|
|
- if (ival & ISREG_PKTRX) {
|
|
|
- irqrx_handler(dev);
|
|
|
- outw(ISREG_PKTRX, dev->base_addr + SONIC_ISREG);
|
|
|
- }
|
|
|
- if (ival & ISREG_TXDN) {
|
|
|
- irqtx_handler(dev);
|
|
|
- outw(ISREG_TXDN, dev->base_addr + SONIC_ISREG);
|
|
|
- }
|
|
|
- if (ival & ISREG_TXER) {
|
|
|
- irqtxerr_handler(dev);
|
|
|
- outw(ISREG_TXER, dev->base_addr + SONIC_ISREG);
|
|
|
- }
|
|
|
- break;
|
|
|
- }
|
|
|
- return IRQ_HANDLED;
|
|
|
-}
|
|
|
-
|
|
|
-/* ------------------------------------------------------------------------
|
|
|
- * driver methods
|
|
|
- * ------------------------------------------------------------------------ */
|
|
|
-
|
|
|
-/* MCA info */
|
|
|
-
|
|
|
-#if 0 /* info available elsewhere, but this is kept for reference */
|
|
|
-static int ibmlana_getinfo(char *buf, int slot, void *d)
|
|
|
-{
|
|
|
- int len = 0, i;
|
|
|
- struct net_device *dev = (struct net_device *) d;
|
|
|
- ibmlana_priv *priv;
|
|
|
-
|
|
|
- /* can't say anything about an uninitialized device... */
|
|
|
-
|
|
|
- if (dev == NULL)
|
|
|
- return len;
|
|
|
- priv = netdev_priv(dev);
|
|
|
-
|
|
|
- /* print info */
|
|
|
-
|
|
|
- len += sprintf(buf + len, "IRQ: %d\n", priv->realirq);
|
|
|
- len += sprintf(buf + len, "I/O: %#lx\n", dev->base_addr);
|
|
|
- len += sprintf(buf + len, "Memory: %#lx-%#lx\n", dev->mem_start, dev->mem_end - 1);
|
|
|
- len += sprintf(buf + len, "Transceiver: %s\n", MediaNames[priv->medium]);
|
|
|
- len += sprintf(buf + len, "Device: %s\n", dev->name);
|
|
|
- len += sprintf(buf + len, "MAC address:");
|
|
|
- for (i = 0; i < 6; i++)
|
|
|
- len += sprintf(buf + len, " %02x", dev->dev_addr[i]);
|
|
|
- buf[len++] = '\n';
|
|
|
- buf[len] = 0;
|
|
|
-
|
|
|
- return len;
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-/* open driver. Means also initialization and start of LANCE */
|
|
|
-
|
|
|
-static int ibmlana_open(struct net_device *dev)
|
|
|
-{
|
|
|
- int result;
|
|
|
- ibmlana_priv *priv = netdev_priv(dev);
|
|
|
-
|
|
|
- /* register resources - only necessary for IRQ */
|
|
|
-
|
|
|
- result = request_irq(priv->realirq, irq_handler, IRQF_SHARED,
|
|
|
- dev->name, dev);
|
|
|
- if (result != 0) {
|
|
|
- printk(KERN_ERR "%s: failed to register irq %d\n", dev->name, dev->irq);
|
|
|
- return result;
|
|
|
- }
|
|
|
- dev->irq = priv->realirq;
|
|
|
-
|
|
|
- /* set up the card and SONIC */
|
|
|
- InitBoard(dev);
|
|
|
-
|
|
|
- /* initialize operational flags */
|
|
|
- netif_start_queue(dev);
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-/* close driver. Shut down board and free allocated resources */
|
|
|
-
|
|
|
-static int ibmlana_close(struct net_device *dev)
|
|
|
-{
|
|
|
- /* turn off board */
|
|
|
-
|
|
|
- /* release resources */
|
|
|
- if (dev->irq != 0)
|
|
|
- free_irq(dev->irq, dev);
|
|
|
- dev->irq = 0;
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-/* transmit a block. */
|
|
|
-
|
|
|
-static netdev_tx_t ibmlana_tx(struct sk_buff *skb, struct net_device *dev)
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-{
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- ibmlana_priv *priv = netdev_priv(dev);
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- int tmplen, addr;
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- unsigned long flags;
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- tda_t tda;
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- int baddr;
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-
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- /* find out if there are free slots for a frame to transmit. If not,
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- the upper layer is in deep desperation and we simply ignore the frame. */
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-
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- if (priv->txusedcnt >= TXBUFCNT) {
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- dev->stats.tx_dropped++;
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- goto tx_done;
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- }
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-
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- /* copy the frame data into the next free transmit buffer - fillup missing */
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- tmplen = skb->len;
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- if (tmplen < 60)
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- tmplen = 60;
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- baddr = priv->txbufstart + (priv->nexttxdescr * PKTSIZE);
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- memcpy_toio(priv->base + baddr, skb->data, skb->len);
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-
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- /* copy filler into RAM - in case we're filling up...
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- we're filling a bit more than necessary, but that doesn't harm
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- since the buffer is far larger...
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- Sorry Linus for the filler string but I couldn't resist ;-) */
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-
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- if (tmplen > skb->len) {
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- char *fill = "NetBSD is a nice OS too! ";
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- unsigned int destoffs = skb->len, l = strlen(fill);
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-
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- while (destoffs < tmplen) {
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- memcpy_toio(priv->base + baddr + destoffs, fill, l);
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- destoffs += l;
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- }
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- }
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-
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- /* set up the new frame descriptor */
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- addr = priv->tdastart + (priv->nexttxdescr * sizeof(tda_t));
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- memcpy_fromio(&tda, priv->base + addr, sizeof(tda_t));
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- tda.length = tda.fraglength = tmplen;
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- memcpy_toio(priv->base + addr, &tda, sizeof(tda_t));
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-
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- /* if there were no active descriptors, trigger the SONIC */
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- spin_lock_irqsave(&priv->lock, flags);
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-
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- priv->txusedcnt++;
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- priv->txused[priv->nexttxdescr] = 1;
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-
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- /* are all transmission slots used up ? */
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- if (priv->txusedcnt >= TXBUFCNT)
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- netif_stop_queue(dev);
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-
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- if (priv->txusedcnt == 1)
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- StartTx(dev, priv->nexttxdescr);
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- priv->nexttxdescr = (priv->nexttxdescr + 1) % TXBUFCNT;
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-
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- spin_unlock_irqrestore(&priv->lock, flags);
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-tx_done:
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- dev_kfree_skb(skb);
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- return NETDEV_TX_OK;
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-}
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-
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-/* switch receiver mode. */
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-
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-static void ibmlana_set_multicast_list(struct net_device *dev)
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-{
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- /* first stop the SONIC... */
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- StopSONIC(dev);
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- /* ...then reinit it with the new flags */
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- InitBoard(dev);
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-}
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-
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-/* ------------------------------------------------------------------------
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- * hardware check
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- * ------------------------------------------------------------------------ */
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-
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-static int ibmlana_irq;
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-static int ibmlana_io;
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-static int startslot; /* counts through slots when probing multiple devices */
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-
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-static short ibmlana_adapter_ids[] __initdata = {
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- IBM_LANA_ID,
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- 0x0000
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-};
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-
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-static char *ibmlana_adapter_names[] = {
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- "IBM LAN Adapter/A",
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- NULL
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-};
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-
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-
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-static const struct net_device_ops ibmlana_netdev_ops = {
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- .ndo_open = ibmlana_open,
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- .ndo_stop = ibmlana_close,
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- .ndo_start_xmit = ibmlana_tx,
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- .ndo_set_rx_mode = ibmlana_set_multicast_list,
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- .ndo_change_mtu = eth_change_mtu,
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- .ndo_set_mac_address = eth_mac_addr,
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- .ndo_validate_addr = eth_validate_addr,
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-};
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-
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-static int ibmlana_init_one(struct device *kdev)
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-{
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- struct mca_device *mdev = to_mca_device(kdev);
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- struct net_device *dev;
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- int slot = mdev->slot, z, rc;
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- int base = 0, irq = 0, iobase = 0, memlen = 0;
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- ibmlana_priv *priv;
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- ibmlana_medium medium;
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-
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- dev = alloc_etherdev(sizeof(ibmlana_priv));
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- if (!dev)
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- return -ENOMEM;
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-
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- dev->irq = ibmlana_irq;
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- dev->base_addr = ibmlana_io;
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-
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- base = dev->mem_start;
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- irq = dev->irq;
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-
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- /* deduce card addresses */
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- getaddrs(mdev, &base, &memlen, &iobase, &irq, &medium);
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-
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- /* were we looking for something different ? */
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- if (dev->irq && dev->irq != irq) {
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- rc = -ENODEV;
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- goto err_out;
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- }
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- if (dev->mem_start && dev->mem_start != base) {
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- rc = -ENODEV;
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- goto err_out;
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- }
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-
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- /* announce success */
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- printk(KERN_INFO "%s: IBM LAN Adapter/A found in slot %d\n", dev->name, slot + 1);
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-
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- /* try to obtain I/O range */
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- if (!request_region(iobase, IBM_LANA_IORANGE, DRV_NAME)) {
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- printk(KERN_ERR "%s: cannot allocate I/O range at %#x!\n", DRV_NAME, iobase);
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- startslot = slot + 1;
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- rc = -EBUSY;
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- goto err_out;
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- }
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-
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- priv = netdev_priv(dev);
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- priv->slot = slot;
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- priv->realirq = mca_device_transform_irq(mdev, irq);
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- priv->medium = medium;
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- spin_lock_init(&priv->lock);
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-
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- /* set base + irq for this device (irq not allocated so far) */
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-
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- dev->irq = 0;
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- dev->mem_start = base;
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- dev->mem_end = base + memlen;
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- dev->base_addr = iobase;
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-
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- priv->base = ioremap(base, memlen);
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- if (!priv->base) {
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- printk(KERN_ERR "%s: cannot remap memory!\n", DRV_NAME);
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- startslot = slot + 1;
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- rc = -EBUSY;
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- goto err_out_reg;
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- }
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-
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- mca_device_set_name(mdev, ibmlana_adapter_names[mdev->index]);
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- mca_device_set_claim(mdev, 1);
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-
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- /* set methods */
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- dev->netdev_ops = &ibmlana_netdev_ops;
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- dev->flags |= IFF_MULTICAST;
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-
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- /* copy out MAC address */
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-
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- for (z = 0; z < ETH_ALEN; z++)
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- dev->dev_addr[z] = inb(dev->base_addr + MACADDRPROM + z);
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-
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- /* print config */
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-
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- printk(KERN_INFO "%s: IRQ %d, I/O %#lx, memory %#lx-%#lx, "
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- "MAC address %pM.\n",
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- dev->name, priv->realirq, dev->base_addr,
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- dev->mem_start, dev->mem_end - 1,
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- dev->dev_addr);
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- printk(KERN_INFO "%s: %s medium\n", dev->name, MediaNames[priv->medium]);
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-
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- /* reset board */
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-
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- ResetBoard(dev);
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-
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- /* next probe will start at next slot */
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-
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- startslot = slot + 1;
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-
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- rc = register_netdev(dev);
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- if (rc)
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- goto err_out_claimed;
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-
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- dev_set_drvdata(kdev, dev);
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- return 0;
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-
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-err_out_claimed:
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- mca_device_set_claim(mdev, 0);
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- iounmap(priv->base);
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-err_out_reg:
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- release_region(iobase, IBM_LANA_IORANGE);
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-err_out:
|
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- free_netdev(dev);
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- return rc;
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-}
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-
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-static int ibmlana_remove_one(struct device *kdev)
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-{
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- struct mca_device *mdev = to_mca_device(kdev);
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- struct net_device *dev = dev_get_drvdata(kdev);
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- ibmlana_priv *priv = netdev_priv(dev);
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-
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- unregister_netdev(dev);
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- /*DeinitBoard(dev); */
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- release_region(dev->base_addr, IBM_LANA_IORANGE);
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- mca_device_set_claim(mdev, 0);
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- iounmap(priv->base);
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|
- free_netdev(dev);
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|
- return 0;
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|
-}
|
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-
|
|
|
-/* ------------------------------------------------------------------------
|
|
|
- * modularization support
|
|
|
- * ------------------------------------------------------------------------ */
|
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-
|
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-module_param_named(irq, ibmlana_irq, int, 0);
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-module_param_named(io, ibmlana_io, int, 0);
|
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-MODULE_PARM_DESC(irq, "IBM LAN/A IRQ number");
|
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-MODULE_PARM_DESC(io, "IBM LAN/A I/O base address");
|
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|
-MODULE_LICENSE("GPL");
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|
-
|
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|
-static struct mca_driver ibmlana_driver = {
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|
|
- .id_table = ibmlana_adapter_ids,
|
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|
- .driver = {
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|
|
- .name = "ibmlana",
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|
- .bus = &mca_bus_type,
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|
- .probe = ibmlana_init_one,
|
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|
- .remove = ibmlana_remove_one,
|
|
|
- },
|
|
|
-};
|
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|
-
|
|
|
-static int __init ibmlana_init_module(void)
|
|
|
-{
|
|
|
- return mca_register_driver(&ibmlana_driver);
|
|
|
-}
|
|
|
-
|
|
|
-static void __exit ibmlana_cleanup_module(void)
|
|
|
-{
|
|
|
- mca_unregister_driver(&ibmlana_driver);
|
|
|
-}
|
|
|
-
|
|
|
-module_init(ibmlana_init_module);
|
|
|
-module_exit(ibmlana_cleanup_module);
|
Paul Gortmaker