On some boards, the mv643xx_eth MAC isn't connected to a PHY but
directly (via the MII/GMII/RGMII interface) to another MAC-layer
device. This patch allows specifying ->phy_addr = -1 to skip all
PHY-related initialisation and run-time poking in that case.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
During OOM, instead of stopping RX refill when the rx desc ring is
not empty, keep trying to refill the ring as long as it is not full
instead.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
Some SoCs have the TX bandwidth control registers in a slightly
different place. This patch detects that case at run time, and
re-directs accesses to those registers to the proper place at
run time if needed.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
Newer hardware has a 16-bit instead of a 14-bit RX coalescing
count field in the SDMA_CONFIG register. This patch adds a run-time
check for which of the two we have, and adjusts further writes to the
rx coal count field accordingly.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
Under some conditions, the TXQ ('TX queue being served') bit can clear
before all packets queued for that TX queue have been transmitted.
This patch enables TXend interrupts, and uses those to re-kick TX
queues that claim to be idle but still have queued descriptors from
the interrupt handler.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
As with the multiple RX queue support, allow the platform code to
specify that the hardware we are running on supports multiple TX
queues. This patch only uses the highest-numbered enabled queue
to send packets to for now, this can be extended later to enable
QoS and such.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
Allow the platform code to specify that we are running on hardware
that is capable of supporting multiple RX queues. If this option
is used, initialise all of the given RX queues instead of just RX
queue zero.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
Add an interface for the hardware's per-port and per-subqueue
TX rate control. In this stage, this is mainly so that we can
disable the bandwidth limits during initialisation of the port.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
General cleanup of the mv643xx_eth driver. Mainly fixes coding
style / indentation issues, get rid of some useless 'volatile's,
kill some more superfluous comments, and such.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
Remove the write-only ->[rt]x_int_coal members from struct
mv643xx_eth_private. In the process, tweak the RX/TX interrupt
mitigation code so that it is compiled by default, and set the
default coalescing delays to 0 usec.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
Split all TX queue related state into 'struct tx_queue', in
preparation for multiple TX queue support.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
Split all RX queue related state into 'struct rx_queue', in
preparation for multiple RX queue support.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
The per-port mv643xx_eth_private struct had a private instance
of struct net_device_stats that was never ever written to, only
read (via the ethtool statistics interface). This patch gets
rid of the private instance, and tweaks the ethtool statistics
code in mv643xx_eth to use the statistics in struct net_device
instead.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
Since they are no longer used, kill enum FUNC_RET_STATUS and
struct pkt_info (which were a rather roundabout way of communicating
RX/TX status within the same driver).
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
rx_return_buff() is also a remnant of the HAL layering that the
original mv643xx_eth driver used. Moving it into its caller kills
the last reference to FUNC_RET_STATUS/pkt_info.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
The port_receive() function is a remnant of the original mv643xx_eth
HAL split. This patch moves port_receive() into its caller, so that
the top and the bottom half of RX processing no longer communicate
via the HAL FUNC_RET_STATUS/pkt_info mechanism abstraction anymore.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
Half of the functions in the mv643xx_eth driver are prefixed by
useless and baroque comment blocks on _what_ those functions do (which
is obvious from the code itself) rather than why, and there's no point
in keeping those comments around.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
A bunch of places in the mv643xx_eth driver use the 'mv643xx_'
prefix. Since the mv643xx is a chip that includes more than just
ethernet, this patch makes all those places use either no prefix
(for some internal-use-only functions), or the full 'mv643xx_eth_'
prefix.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
The fact that mv643xx_eth is an ethernet driver is pretty obvious,
and having a lot of internal-use-only functions and defines prefixed
with ETH_/ethernet_/eth_ prefixes is rather pointless. So, get rid
of most of those prefixes.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
Remove the unused rx/tx descriptor field defines, and move the ones
that are actually used to the actual definitions of the rx/tx
descriptor format.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
All except one of the port serial status register bit defines are
unused -- kill the unused ones.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
The only user of the ETH_MIB_VERY_LONG_NAME_HERE defines is the
eth_update_mib_counters() function. Get rid of the defines by
open-coding the register offsets in the latter.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
Get rid of RX_BUF_OFFSET (which is synonymous with ETH_HW_IP_ALIGN).
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
Replace the nondescriptive names ETH_INT_UNMASK_ALL and
ETH_INT_UNMASK_ALL_EXT by names of the actual fields being masked
and unmasked in the various writes to the interrupt mask registers.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
None of the port status register bit defines are ever used in the
mv643xx_eth driver -- nuke them all.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
Over half of the port serial control register bit defines are never
used, and the PORT_SERIAL_CONTROL_DEFAULT_VALUE define is never used
either. Keep only those defines that are actually used.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
Delete the defines for SDMA config register bit values that are
never used in the driver, to tidy up the code some more.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
The port config extend register is never changed at run time.
Document the meaning of the initial value, and delete the defines
for the individual bits in this register.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
The mv643xx_eth driver only ever changes bit 0 of the port config
register at run time, the rest of the register bits are fixed (and
always zero). Document the meaning of the chosen default value,
and get rid of all the defines for each of the individual bits.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
Shorten the various oversized register names in mv643xx_eth.c, to
increase readability.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
This patch performs a reverse topological sort of all functions in
mv643xx_eth.c, so that we can get rid of all forward declarations,
and end up with a more understandable driver due to related functions
being grouped together.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
There exist chips with up to four mv643xx_eth silicon blocks but
only one external SMI (MII management) interface -- the SMI logic
of the first block is shared by all the blocks.
Handle this by allowing a per-port override of which
mv643xx_eth_shared's SMI registers (and spinlock) to use.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
Make t_clk configurable via platform device data (with the current
hardcoded value, 133 MHz, being the default), as it varies across
different chip families.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
Make it possible to pass mbus_dram_target_info to the mv643xx_eth
driver via the platform data, and make the mv643xx_eth driver
program the window registers based on this data if it is passed in.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Reviewed-by: Tzachi Perelstein <tzachi@marvell.com>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
Move mv643xx_eth's static state (ethernet register block base address
and MII management interface spinlock) into a struct hanging off the
shared platform device. This is necessary to support chips that
contain multiple mv643xx_eth silicon blocks.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
Since 43cc71eed1, the platform modalias is
prefixed with "platform:". Add MODULE_ALIAS() to the hotpluggable network
platform drivers, to re-enable auto loading.
NOTE: didn't change drivers/net/fs_enet/fs_enet-main.c "old binding" support.
That looks problematic in the first place (it even uses the ancient "struct
device_driver" binding scheme for platform_bus!) and I suspect it will vanish
soonish when arch/powerpc rules the world. Also, drivers/net/ne.c would have
needed more thought to sort out.
[akpm@linux-foundation.org: fix sgiseeq.c]
[dbrownell@users.sourceforge.net: more drivers, registration fixes]
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Scott Wood <scottwood@freescale.com>
Cc: Vitaly Bordug <vitb@kernel.crashing.org>
Cc: Dale Farnsworth <dale@farnsworth.org>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Andrew Victor <andrew@sanpeople.com>
Cc: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
When there are multiple mv643xx_eth silicon blocks in the system,
don't print an initialisation message for each and every one of
them.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Reviewed-by: Tzachi Perelstein <tzachi@marvell.com>
Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
Pass a struct mv643xx_private * to the register accessor functions,
as a preparation for having multiple mv643xx_eth silicon blocks.
(Since this causes some 80 column straddling, and the mv_ prefix
is useless anyway, rename mv_read to rdl and mv_write to wrl to
compensate.)
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Reviewed-by: Tzachi Perelstein <tzachi@marvell.com>
Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
In error and warning printks, always report the netdevice name
instead of the port index (the latter has no meaning when there
are multiple mv643xx_eth silicon blocks in the system.)
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Reviewed-by: Tzachi Perelstein <tzachi@marvell.com>
Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
Instead of identifying individual mv643xx ethernet ports by only
their port number, identify them by their struct mv643xx_private *,
as just a port number has no meaning when there are multiple
mv643xx_eth silicon blocks in the system.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Reviewed-by: Tzachi Perelstein <tzachi@marvell.com>
Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
- Remove unused MV643XX_DEFAULT_[RT]X_QUEUE_SIZE definitions.
- Remove ETH_TARGET enum -- it isn't used anywhere in the driver,
and isn't even valid for non-mv643xx chip models, as those use
different MBUS target IDs.
- Clean up comment and control flow in mv643xx_eth_change_mtu().
- Use mp->dev instead of mp->mii.dev in mv643xx_eth_tx_timeout_task().
- Make mv643xx_eth_free_tx_descs() static.
- Remove overzealous NULL check in mv643xx_eth_start_xmit().
- Use symbolic NETDEV_TX_* constants in mv643xx_eth_start_xmit().
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Reviewed-by: Tzachi Perelstein <tzachi@marvell.com>
Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
Lennert Buytenhek