Commit Graph

32 Commits

Author SHA1 Message Date
Michael Chan 9052a840ff [BNX2]: Add new 5709 registers (part 2).
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02 21:24:25 -08:00
Michael Chan 19cdeb794b [BNX2]: Add new 5709 registers (part 1).
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02 21:24:23 -08:00
Michael Chan af3ee519c5 [BNX2]: Re-organize firmware structures.
Re-organize the firmware handling code and declarations a bit to make
the code more compact.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02 21:24:22 -08:00
Michael Chan f8dd064ee1 [BNX2]: Add 5708S parallel detection.
Add code to parallel detect 1Gbps and 2.5Gbps link speeds.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02 21:24:20 -08:00
Michael Chan 80be44348e [BNX2]: Improve SerDes handling.
1. Add support for 2.5Gbps forced speed setting.
2. Remove a long udelay() loop and change to msleep().
3. Other misc. SerDes fixes.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-02 21:24:18 -08:00
Jeff Garzik 6aa20a2235 drivers/net: Trim trailing whitespace
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-13 13:24:59 -04:00
Michael Chan 2f8af120a1 [BNX2]: Fix tx race condition.
Fix a subtle race condition between bnx2_start_xmit() and bnx2_tx_int()
similar to the one in tg3 discovered by Herbert Xu:

CPU0					CPU1
bnx2_start_xmit()
	if (tx_ring_full) {
		tx_lock
					bnx2_tx()
						if (!netif_queue_stopped)
		netif_stop_queue()
		if (!tx_ring_full)
						update_tx_ring
			netif_wake_queue()
		tx_unlock
	}

Even though tx_ring is updated before the if statement in bnx2_tx_int() in
program order, it can be re-ordered by the CPU as shown above.  This
scenario can cause the tx queue to be stopped forever if bnx2_tx_int() has
just freed up the entire tx_ring.  The possibility of this happening
should be very rare though.

The following changes are made, very much identical to the tg3 fix:

1. Add memory barrier to fix the above race condition.

2. Eliminate the private tx_lock altogether and rely solely on
netif_tx_lock.  This eliminates one spinlock in bnx2_start_xmit()
when the ring is full.

3. Because of 2, use netif_tx_lock in bnx2_tx_int() before calling
netif_wake_queue().

4. Add memory barrier to bnx2_tx_avail().

5. Add bp->tx_wake_thresh which is set to half the tx ring size.

6. Check for the full wake queue condition before getting
netif_tx_lock in tg3_tx().  This reduces the number of unnecessary
spinlocks when the tx ring is full in a steady-state condition.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-08-17 16:29:51 -07:00
Michael Chan 6c4f095eae [BNX2]: Turn off link during shutdown
Minor change in shutdown logic to effect a link down.

Update version to 1.4.43.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-29 16:58:24 -07:00
Michael Chan c86a31f452 [BNX2]: Use CPU native page size
Use CPU native page size to determine various ring sizes. This allows
order-0 memory allocations on all systems.

Added check to limit the page size to 16K since that's the maximum rx
ring size that will be used. This will prevent using unnecessarily
large page sizes on some architectures with large page sizes.
[Suggested by David Miller]

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-17 21:30:49 -07:00
Michael Chan fba9fe911b [BNX2]: Add firmware decompression
Add functions to decompress firmware before loading to the internal
CPUs. Compressing the firmware reduces the driver size significantly.

Added file name length sanity check in the gzip header to prevent
going past the end of buffer [suggested by DaveM].

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-17 21:30:44 -07:00
Michael Chan cea94db9b4 [BNX2]: Add an rx drop counter
Add a counter for packets dropped by firmware.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-17 21:30:40 -07:00
Michael Chan 29b12174ac [BNX2]: Separate tx producer and consumer fields
Put the tx producer and consumer fields in separate cache lines in
the device structure, similar to the VJ net channel queue structure.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-23 01:13:43 -08:00
Michael Chan f2a4f05216 [BNX2]: Move .h files to bnx2.c
Move all #include <> from bnx2.h to bnx2.c.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-23 01:13:12 -08:00
Michael Chan 0f31f99446 [BNX2]: Combine small mem allocations
Combine two small (56 byte and 320 byte) pci consistent memory
allocations into one allocation. Jeff Garzik suggested to store
the combined size in the bp structure for later use when freeing
the memory.

Use kzalloc() instead of kmalloc() + memset().

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-23 01:12:38 -08:00
Michael Chan bf5295bba8 [BNX2]: Fix link change handling
Fix some link-related problems by doing a coalesce_now after link
change interrupt to flush out the transient link status.

To facilitate this, the host coalesce cmd register value is cached in
the device structure.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-23 01:11:56 -08:00
Michael Chan 0d36f37bb1 [BNX2]: include <linux/vmalloc.h>
Include <linux/vmalloc.h> so that it compiles properly on all archs.

Update version to 1.4.38.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:55:25 -08:00
Michael Chan 13daffa2f2 [BNX2]: Support larger rx ring sizes (part 1)
Increase maximum receive ring size from 255 to 1020 by supporting
up to 4 linked pages of receive descriptors. To accomodate the
higher memory usage, each physical descriptor page is allocated
separately and the software ring that keeps track of the SKBs and the
DMA addresses is allocated using vmalloc.

Some of the receive-related fields in the bp structure are re-
organized a bit for better locality of reference.

The max. was reduced to 1020 from 4080 after discussion with David
Miller.

This patch contains ring init code changes only. This next patch
contains rx data path code changes.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:49:20 -08:00
Michael Chan 206cc83ccd [BNX2]: Update version and copyright year
Update version to 1.4.31 and add 2006 copyright.

Skip the last digit when reporting the firmware version.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-23 16:14:05 -08:00
Michael Chan 1122db717a [BNX2]: Fix nvram sizing
Add code to correctly determine nvram size.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-23 16:11:42 -08:00
Michael Chan ade2bfe7d1 [BNX2]: Fix UDP checksum verification
Fix TCP/UDP checksum verification. Use status bits in the buffer
descriptor instead of the checksum value to verify rx checksum.
Using the checksum value will be incorrect if the UDP packet has
zero in the UDP checksum field.

Firmware update required for this fix.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-23 16:09:51 -08:00
Michael Chan dda1e390bf [BNX2]: Misc. fixes
Some misc. fixes for WoL, 5708 B1, and a typo '=' instead of '=='.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-23 16:08:14 -08:00
Michael Chan b090ae2b59 [BNX2]: Improve handshake with firmware
Improve handshake with bootcode with the following changes:

1. Increase timeout to 100msec and use msleep instead of udelay.

2. Add more error checking for timeouts and errors. 

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-23 16:07:10 -08:00
Michael Chan e29054f92d [BNX2]: Fix VLAN on ASF
Always set up the device to strip incoming VLAN tags when ASF is
enabled. ASF firmware will not parse packets correctly if VLAN tags
are not stripped.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-23 16:06:06 -08:00
Michael Chan f4e418f7f3 [PATCH] bnx2: refine bnx2_poll
Refine bnx2_poll() logic to write back the most up-to-date status tag
when all work has been processed. This eliminates some occasional
extra interrupts when a older status tag is written even though all
work has been processed.

The idea is to read the status tag just before exiting bnx2_poll() and
then check again for any new work. If no new work is pending, the
status tag written back will not generate any extra interrupt. This
logic is similar to the changes David Miller did to tg3_poll().

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2005-11-05 21:00:03 -05:00
Michael Chan e3648b3d8d [PATCH] bnx2: update firmware handshake for 5708
Dynamically determine the shared memory location where eeprom
parameters are stored instead of using a fixed location.

Add speed reporting to management firmware. This allows management
firmware to know the current speed without contending for MII
registers.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2005-11-05 21:00:03 -05:00
Michael Chan 371377091d [PATCH] bnx2: update nvram code for 5708
Update bnx2 nvram code with support for 5708.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2005-11-05 21:00:02 -05:00
Michael Chan 5b0c76ad94 [PATCH] bnx2: add 5708 support
Add 5708 copper and serdes basic support, including 2.5 Gbps support
on 5708 serdes. SPEED_2500 is also added to ethtool.h

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2005-11-05 21:00:02 -05:00
Michael Chan c921e4c4db [BNX2]: Fix bug in irq handler and add prefetch
Fix bug in bnx2_interrupt() that caused an unnecessary register read.
The BNX2_PCICFG_MISC_STATUS should only be read when the status tag
has not changed.

Add prefetch of the status block in bnx2_msi() similar to tg3_msi().
The status block is not touched in bnx2_msi() and prefetching it will
speed up bnx2_poll() that will run on the same CPU that received the
MSI.

Update version.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-09-08 13:15:32 -07:00
Michael Chan e89bbf1049 [BNX2]: remove atomics in tx
Remove atomic operations in the fast tx path. Expensive atomic
operations were used to keep track of the number of available tx
descriptors. The new code uses the difference between the consumer
and producer index to determine the number of free tx descriptors.

As suggested by Jeff Garzik, the name of the inline function is
changed to all lower case.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29 16:10:38 -07:00
Michael Chan cd339a0ed6 [BNX2]: speedup serdes linkup
This speeds up link-up time on 5706 SerDes if the link partner does
not autoneg, a rather common scenario in blade servers. Some blade
servers use IPMI for keyboard input and it's important to minimize
link disruptions.

The speedup is achieved by shortening the timer to (HZ / 3) during
the transient period right after initiating a SerDes autoneg. If
autoneg does not complete, parallel detect can be done sooner. After
the transient period is over, the timer goes back to its normal HZ
interval.

As suggested by Jeff Garzik, the timer initialization is moved to
bnx2_init_board() from bnx2_open().

An eeprom bit is also added to allow default forced SerDes speed for
even faster link-up time.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29 16:10:34 -07:00
Michael Chan afdc08b9f9 [BNX2]: Fix rtnl deadlock in bnx2_close
This fixes an rtnl deadlock problem when flush_scheduled_work() is
called from bnx2_close(). In rare cases, linkwatch_event() may be on
the workqueue from a previous close of a different device and it will
try to get the rtnl lock which is already held by dev_close().

The fix is to set a flag if we are in the reset task which is run
from the workqueue. bnx2_close() will loop until the flag is cleared.
As suggested by Jeff Garzik, the loop is changed to call msleep(1)
instead of yield() in the original patch.

flush_scheduled_work() is also moved to bnx2_remove_one() before the
netdev is freed.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29 16:10:29 -07:00
Michael Chan b6016b7673 [BNX2]: New Broadcom gigabit network driver.
A new driver bnx2 for Broadcom bcm5706 is available.

The patch also includes new 1000BASE-X advertisement bit definitions in
mii.h

Thanks to David Miller and Jeff Garzik for reviewing and their valuable
feedback.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-05-26 13:03:09 -07:00