kernel.git/drivers/net/ethernet/stmicro, branch linux-3.4.y

stmmac: troubleshoot unexpected bits in des0 & des1

2015-10-22T01:20:06Z

commit f1590670ce069eefeb93916391a67643e6ad1630 upstream. Current implementation of descriptor init procedure only takes care about setting/clearing ownership flag in "des0"/"des1" fields while it is perfectly possible to get unexpected bits set because of the following factors: [1] On driver probe underlying memory allocated with dma_alloc_coherent() might not be zeroed and so it will be filled with garbage. [2] During driver operation some bits could be set by SD/MMC controller (for example error flags etc). And unexpected and/or randomly set flags in "des0"/"des1" fields may lead to unpredictable behavior of GMAC DMA block. This change addresses both items above with: [1] Use of dma_zalloc_coherent() instead of simple dma_alloc_coherent() to make sure allocated memory is zeroed. That shouldn't affect performance because this allocation only happens once on driver probe. [2] Do explicit zeroing of both "des0" and "des1" fields of all buffer descriptors during initialization of DMA transfer. And while at it fixed identation of dma_free_coherent() counterpart as well. Signed-off-by: Alexey Brodkin Cc: Giuseppe Cavallaro Cc: arc-linux-dev@synopsys.com Cc: linux-kernel@vger.kernel.org Cc: David Miller Signed-off-by: David S. Miller [lizf: Backported to 3.4: - adjust contest - adjust allocations in init_dma_desc_rings()] Signed-off-by: Zefan Li

stmmac: Fix for nfs hang on multiple reboot

2012-07-19T15:58:57Z

commit 8e83989106562326bfd6aaf92174fe138efd026b upstream. It was observed that during multiple reboots nfs hangs. The status of receive descriptors shows that all the descriptors were in control of CPU, and none were assigned to DMA. Also the DMA status register confirmed that the Rx buffer is unavailable. This patch adds the fix for the same by adding the memory barriers to ascertain that the all instructions before enabling the Rx or Tx DMA are completed which involves the proper setting of the ownership bit in DMA descriptors. Signed-off-by: Deepak Sikri Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman

stmmac: re-add IFF_UNICAST_FLT for dwmac1000

2012-04-04T22:38:31Z

In commit (bfab27a stmmac: add the experimental PCI support) the IFF_UNICAST_FLT flag has been removed from the stmmac_mac_device_setup() function. This patch re-adds the flag. Signed-off-by: Marc Kleine-Budde Acked-by: Giuseppe Cavallaro Signed-off-by: David S. Miller

stmmac: Add device-tree support

2012-03-17T05:48:53Z

This patch adds support to configure the STMMAC ethernet driver via device-tree instead of platform_data. Currently, only the properties needed on SPEAr600 are provided. All other properties should be added once needed on other platforms. Signed-off-by: Stefan Roese Cc: Giuseppe Cavallaro Signed-off-by: David S. Miller

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2012-02-19T21:03:15Z

Conflicts: drivers/net/ethernet/broadcom/bnx2x/bnx2x_stats.c Small minor conflict in bnx2x, wherein one commit changed how statistics were stored in software, and another commit fixed endianness bugs wrt. reading the values provided by the chip in memory. Signed-off-by: David S. Miller

net: replace random_ether_addr() with eth_hw_addr_random()

2012-02-15T20:34:16Z

Replace usage of random_ether_addr() with eth_hw_addr_random() to set addr_assign_type correctly to NET_ADDR_RANDOM. Change the trivial cases. v2: adapt to renamed eth_hw_addr_random() Signed-off-by: Danny Kukawka Signed-off-by: David S. Miller

stmmac: update the driver version to Feb 2012 (v2)

2012-02-15T19:52:10Z

Signed-off-by: Giuseppe Cavallaro Signed-off-by: David S. Miller

stmmac: move hw init in the probe (v2)

2012-02-15T19:52:10Z

This patch moves the MAC HW initialization and the HW feature verification from the open to the probe function as D. Miller suggested. So the patch actually reorganizes and tidies-up some parts of the driver and indeed fixes some problem when tune its HW features. These can be overwritten by looking at the HW cap register at run-time and that generated problems. Signed-off-by: Giuseppe Cavallaro Reviewed-by: Francesco Virlinzi Signed-off-by: David S. Miller

stmmac: request_irq when use an ext wake irq line (v2)

2012-02-15T19:52:10Z

In case of we use an external Wake-Up IRQ line (priv->wol_irq != dev->irq) we need to invoke the request_irq. Signed-off-by: Francesco Virlinzi Signed-off-by: Giuseppe Cavallaro Signed-off-by: David S. Miller

stmmac: do not discard frame on dribbling bit assert

2012-02-15T19:52:10Z

If this bit is set and the CRC error is reset, then the packet is valid. Only report this as stat info. Signed-off-by: Giuseppe Cavallaro Signed-off-by: David S. Miller