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9076e0cae7
linux/drivers/net/ethernet/sfc
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Ben Hutchings d9317aea16 sfc: Use the correct maximum TX DMA ring size for SFC9100 
As part of a workaround for a hardware erratum in the SFC9100 family
(SF bug 35388), the TX_DESC_UPD_DWORD register address is also used
for communicating with the event block, and only descriptor pointer
values < 2048 are valid.

If the TX DMA ring size is increased to 4096 descriptors (which the
firmware still allows) then we may write a descriptor pointer
value >= 2048, which has entirely different and undesirable effects!

Limit the TX DMA ring size correctly when this workaround is in
effect.

Fixes: 8127d661e7 ('sfc: Add support for Solarflare SFC9100 family')
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Shradha Shah <sshah@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-23 13:40:51 -08:00
..
bitfield.h sfc: Update copyright banners 2013-08-29 23:34:51 +01:00
ef10_regs.h sfc: Use TX PIO for sufficiently small packets 2013-09-20 19:31:52 +01:00
ef10.c sfc: Change efx_mcdi_reset_port to use ENTITY_RESET MC command. 2014-01-21 14:46:12 -08:00
efx.c Merge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/bwh/sfc-next 2013-12-17 17:08:21 -05:00
efx.h sfc: Use the correct maximum TX DMA ring size for SFC9100 2014-01-23 13:40:51 -08:00
enum.h sfc: Add MC BISTs to ethtool offline self test on EF10 2013-12-12 22:05:48 +00:00
ethtool.c sfc: Use the correct maximum TX DMA ring size for SFC9100 2014-01-23 13:40:51 -08:00
falcon_boards.c sfc: Update copyright banners 2013-08-29 23:34:51 +01:00
falcon.c sfc: fix sparse non static symbol warning 2013-12-19 15:00:31 -05:00
farch_regs.h sfc: Update copyright banners 2013-08-29 23:34:51 +01:00
farch.c sfc: Implement efx_nic_type::filter_clear_rx operation for EF10 2013-12-12 22:07:25 +00:00
filter.h sfc: Change priority and flags for automatic MAC filters 2013-12-12 22:07:22 +00:00
io.h sfc: Allocate and link PIO buffers; map them with write-combining 2013-09-20 19:31:49 +01:00
Kconfig sfc: Minimal support for 40G link speed 2013-09-05 22:32:57 +01:00
Makefile sfc: Add support for Solarflare SFC9100 family 2013-08-29 19:19:29 +01:00
mcdi_mon.c sfc: Add new sensor names 2013-12-12 22:06:54 +00:00
mcdi_pcol.h sfc: Update MCDI protocol definitions 2013-12-06 22:29:20 +00:00
mcdi_port.c sfc: Log all unexpected MCDI errors 2013-12-12 22:06:56 +00:00
mcdi.c sfc: Change efx_mcdi_reset_port to use ENTITY_RESET MC command. 2014-01-21 14:46:12 -08:00
mcdi.h sfc: Store flags from MC_CMD_DRV_ATTACH for later use 2013-12-12 22:07:03 +00:00
mdio_10g.c sfc: Update copyright banners 2013-08-29 23:34:51 +01:00
mdio_10g.h sfc: Remove extern from function prototypes 2013-09-24 12:52:53 -07:00
mtd.c sfc: Update copyright banners 2013-08-29 23:34:51 +01:00
net_driver.h sfc: remove unused 'enum efx_rx_alloc_method' 2013-12-12 22:07:27 +00:00
nic.c sfc: Correct RX dropped count for drops while interface is down 2013-12-12 22:06:51 +00:00
nic.h sfc: Add PTP counters to ethtool stats 2013-12-12 22:07:30 +00:00
phy.h sfc: Remove extern from function prototypes 2013-09-24 12:52:53 -07:00
ptp.c sfc: Fix transposed ptp_{under, over}size_sync_windows statistics 2014-01-21 14:46:12 -08:00
qt202x_phy.c sfc: Update copyright banners 2013-08-29 23:34:51 +01:00
rx.c net: sfc calls skb_set_hash 2013-12-18 15:00:53 -05:00
selftest.c sfc: Add MC BISTs to ethtool offline self test on EF10 2013-12-12 22:05:48 +00:00
selftest.h sfc: Add MC BISTs to ethtool offline self test on EF10 2013-12-12 22:05:48 +00:00
siena_sriov.c sfc: Update copyright banners 2013-08-29 23:34:51 +01:00
siena.c sfc: Change efx_nic_type::rx_push_indir_table to push hash key as well 2013-12-12 22:07:21 +00:00
tenxpress.c sfc: Update copyright banners 2013-08-29 23:34:51 +01:00
tx.c sfc: Fix DMA unmapping issue with firmware assisted TSO 2013-10-31 20:58:14 +00:00
txc43128_phy.c sfc: Update copyright banners 2013-08-29 23:34:51 +01:00
vfdi.h sfc: Update copyright banners 2013-08-29 23:34:51 +01:00
workarounds.h sfc: Update copyright banners 2013-08-29 23:34:51 +01:00