u-boot.git/drivers/net/macb.c, branch v2019.10

net: macb: Fix rx buffer cache handling

2019-09-04T16:37:19+00:00

With commit c6d07bf440bc ("net/macb: increase RX buffer size for GEM")
ethernet support does not work any more with d-cache enabled on the
AT91SAM. The reason is, that MACB_RX_BUFFER_SIZE was changed from 4096
to 128 but this change was not refected in the rx_buffer flush and
invalidate functions, as these also use this macro.

This patch now fixes this by calculating the rx buffer size correctly
again in those functions. With this change, ethernet works again
reliably on my AT91SAM board.

Signed-off-by: Stefan Roese 
Fixes: c6d07bf440bc ("net/macb: increase RX buffer size for GEM")
Cc: Ramon Fried 
Cc: Eugen Hristev 
Cc: Anup Patel 
Cc: Bin Meng 
Cc: Joe Hershberger 
Reviewed-by: Bin Meng 
Tested-by: Bin Meng 
Acked-by: Joe Hershberger

Revert "net: macb: Fixed reading MII_LPA register"

2019-09-04T16:37:19+00:00

This reverts commit 1b0c9914cc75d1570359181ebd493cd5746cb0ed.

Commit 1b0c9914cc75 ("net: macb: Fixed reading MII_LPA register")
causes 100Mbps does not work any more with SiFive FU540 GEM on the
HiFive Unleashed board. Revert it.

Signed-off-by: Bin Meng 
Acked-by: Joe Hershberger

net: macb: Fix check for little-endian system in gmac_configure_dma()

2019-07-25T18:13:31+00:00

Instead of depending on CONFIG_SYS_LITTLE_ENDIAN, we check at runtime
whether underlying system is little-endian or big-endian. This way
we are not dependent on any U-Boot specific OR compiler specific macro
to check system endianness.

Signed-off-by: Anup Patel 
Reviewed-by: Bin Meng 
Reviewed-by: Ramon Fried 
Acked-by: Joe Hershberger

net: macb: Extend MACB driver for SiFive Unleashed board

2019-07-25T18:13:31+00:00

The SiFive MACB ethernet has a custom TX_CLK_SEL register to select
different TX clock for 1000mbps vs 10/100mbps.

This patch adds SiFive MACB compatible string and extends the MACB
ethernet driver to change TX clock using TX_CLK_SEL register for
SiFive MACB.

Signed-off-by: Anup Patel 
Reviewed-by: Bin Meng 
Reviewed-by: Ramon Fried 
Acked-by: Joe Hershberger

net/macb: increase RX buffer size for GEM

2019-07-25T18:13:30+00:00

Macb Ethernet controller requires a RX buffer of 128 bytes. It is
highly sub-optimal for Gigabit-capable GEM that is able to use
a bigger DMA buffer. Change this constant and associated macros
with data stored in the private structure.
RX DMA buffer size has to be multiple of 64 bytes as indicated in
DMA Configuration Register specification.

Signed-off-by: Ramon Fried 
Acked-by: Joe Hershberger

net: macb: apply sane DMA configuration

2019-07-25T18:13:30+00:00

DMA configuration was heavily dependent on the HW
defaults, add function to properly set the required
fields, including the new dma_burst_length.

Signed-off-by: Ramon Fried 
Reviewed-by: Anup Patel 
Tested-by: Anup Patel 
Acked-by: Joe Hershberger

net: macb: add dma_burst_length config

2019-07-25T18:13:30+00:00

GEM support higher DMA burst writes/reads than the default (4).
add configuration structure with dma burst length so it could be
applied later to DMA configuration.

Signed-off-by: Ramon Fried 
Reviewed-by: Anup Patel 
Tested-by: Anup Patel 
Acked-by: Joe Hershberger

net: macb: add support for SGMII phy interface

2019-07-25T18:13:30+00:00

This patch adds support for the sgmii phy interface,
available only to DM users, dictated by current driver
design.

Signed-off-by: Ramon Fried 
Reviewed-by: Anup Patel 
Tested-by: Anup Patel 
Acked-by: Joe Hershberger

net: macb: use bit access macro from header file

2019-07-25T18:13:30+00:00

macb.h provides macros for reading/setting bitfields,
in macb registers and descriptors. use that instead
of redefining them in the source file.

Signed-off-by: Ramon Fried 
Reviewed-by: Anup Patel 
Tested-by: Anup Patel 
Acked-by: Joe Hershberger

net: macb: add support for faster clk rates

2019-07-25T18:13:30+00:00

add support for clock rates higher than 2.4Mhz

Signed-off-by: Ramon Fried 
Reviewed-by: Anup Patel 
Tested-by: Anup Patel 
Acked-by: Joe Hershberger