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2017-03-06net: ethernet: bgmac: driver power manangementJoey Zhong1-0/+2
Implement suspend/resume callbacks in the bgmac driver. This makes sure that we de-initialize and re-initialize the hardware correctly before entering suspend and when resuming. Signed-off-by: Joey Zhong <zhongx@broadcom.com> Signed-off-by: Jon Mason <jon.mason@broadcom.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-03-06net: ethernet: bgmac: use #defines for MAX sizeJon Mason1-1/+1
The maximum frame size is really just the standard ethernet frame size and FCS. So use those existing defines to make the code a little more beautiful. Signed-off-by: Jon Mason <jon.mason@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-03-03net: ethernet: bgmac: init sequence bugJon Mason1-0/+16
Fix a bug in the 'bgmac' driver init sequence that blind writes for init sequence where it should preserve most bits other than the ones it is deliberately manipulating. The code now checks to see if the adapter needs to be brought out of reset (where as before it was doing an IDM write to bring it out of reset regardless of whether it was in reset or not). Also, removed unnecessary usleeps (as there is already a read present to flush the IDM writes). Signed-off-by: Zac Schroff <zschroff@broadcom.com> Signed-off-by: Jon Mason <jon.mason@broadcom.com> Fixes: f6a95a24957 ("net: ethernet: bgmac: Add platform device support") Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-17net: bgmac: store MAC address directly in netdev->dev_addrTobias Klauser1-1/+0
After commit 34a5102c3235 ("net: bgmac: allocate struct bgmac just once & don't copy it") the mac_addr member of struct bgmac is no longer necessary to pass the MAC address to bgmac_enet_probe(). Instead it can directly be stored in netdev->dev_addr. Also use eth_hw_addr_random() instead of eth_random_addr() in case a random MAC is nedded. This will make sure netdev->addr_assign_type will be properly set. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Acked-by: Jon Mason <jon.mason@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-31net: bgmac: drop struct bcma_mdio we don't need anymoreRafał Miłecki1-1/+1
Adding struct bcma_mdio was a workaround for bcma code not having access to the struct bgmac used in the core code. Now we don't duplicate this struct we can just use it internally in bcma code. This simplifies code & allows access to all bgmac driver details from all places in bcma code. Signed-off-by: Rafał Miłecki <rafal@milecki.pl> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-31net: bgmac: allocate struct bgmac just once & don't copy itRafał Miłecki1-1/+2
So far were were allocating struct bgmac in 3 places: platform code, bcma code and shared bgmac_enet_probe function. The reason for this was bgmac_enet_probe: 1) Requiring early-filled struct bgmac 2) Calling alloc_etherdev on its own in order to use netdev_priv later This solution got few drawbacks: 1) Was duplicating allocating code 2) Required copying early-filled struct 3) Resulted in platform/bcma code having access only to unused struct Solve this situation by simply extracting some probe code into the new bgmac_alloc function. Signed-off-by: Rafał Miłecki <rafal@milecki.pl> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-07net: ethernet: bgmac: add NS2 supportJon Mason1-0/+1
Add support for the variant of amac hardware present in the Broadcom Northstar2 based SoCs. Northstar2 requires an additional register to be configured with the port speed/duplexity (NICPM). This can be added to the link callback to hide it from the instances that do not use this. Also, clearing of the pending interrupts on init is required due to observed issues on some platforms. Signed-off-by: Jon Mason <jon.mason@broadcom.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Acked-by: Rafał Miłecki <rafal@milecki.pl> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-07net: ethernet: bgmac: device tree phy enablementJon Mason1-0/+8
Change the bgmac driver to allow for phy's defined by the device tree Signed-off-by: Jon Mason <jon.mason@broadcom.com> Acked-by: Rafał Miłecki <rafal@milecki.pl> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-08-18net: bgmac: support Ethernet core on BCM53573 SoCsRafał Miłecki1-0/+19
BCM53573 is a new series of Broadcom's SoCs. It's based on ARM and can be found in two packages (versions): BCM53573 and BCM47189. It shares some code with the Northstar family, but also requires some new quirks. First of all there can be up to 2 Ethernet cores on this SoC. If that is the case, they are connected to two different switch ports allowing some more complex/optimized setups. It seems the second unit doesn't come fully configured and requires some IRQ quirk. Other than that only the first core is connected to the PHY. For the second one we have to register fixed PHY (similarly to the Northstar), otherwise generic PHY driver would get some invalid info. This has been successfully tested on Tenda AC9 (BCM47189B0). Signed-off-by: Rafał Miłecki <rafal@milecki.pl> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-09net: ethernet: bgmac: Add platform device supportJon Mason1-6/+67
The bcma portion of the driver has been split off into a bcma specific driver. This has been mirrored for the platform driver. The last references to the bcma core struct have been changed into a generic function call. These function calls are wrappers to either the original bcma code or new platform functions that access the same areas via MMIO. This necessitated adding function pointers for both platform and bcma to hide which backend is being used from the generic bgmac code. Signed-off-by: Jon Mason <jon.mason@broadcom.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Tested-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-09net: ethernet: bgmac: convert to feature flagsJon Mason1-1/+20
The bgmac driver is using the bcma provides device ID and revision, as well as the SoC ID and package, to determine which features are necessary to enable, reset, etc in the driver. In anticipation of removing the bcma requirement for this driver, these must be changed to not reference that struct. In place of that, each "feature" has been given a flag, and the flags are enabled for their respective device and SoC. Signed-off-by: Jon Mason <jon.mason@broadcom.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Tested-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-09net: ethernet: bgmac: move BCMA MDIO Phy code into a separate fileJon Mason1-0/+3
Move the BCMA MDIO phy into a separate file, as it is very tightly coupled with the BCMA bus. This will help with the upcoming BCMA removal from the bgmac driver. Optimally, this should be moved into phy drivers, but it is too tightly coupled with the bgmac driver to effectively move it without more changes to the driver. Note: the phy_reset was intentionally removed, as the mdio phy subsystem automatically resets the phy if a reset function pointer is present. In addition to the moving of the driver, this reset function is added. Signed-off-by: Jon Mason <jon.mason@broadcom.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Tested-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-09net: ethernet: bgmac: add dma_dev pointerJon Mason1-0/+1
The dma buffer allocation, etc references a dma_dev device pointer from the bcma core. In anticipation of removing the bcma requirement for this driver, these must be changed to not reference that struct. Add a dma_dev device pointer to the bgmac stuct and reference that instead. Signed-off-by: Jon Mason <jon.mason@broadcom.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Tested-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-09net: ethernet: bgmac: change bgmac_* prints to dev_* printsJon Mason1-12/+2
The bgmac_* print wrappers call dev_* prints with the dev pointer from the bcma core. In anticipation of removing the bcma requirement for this driver, these must be changed to not reference that struct. So, simply change all of the bgmac_* prints to their dev_* counterparts. In some cases netdev_* prints are more appropriate, so change those as well. Signed-off-by: Jon Mason <jon.mason@broadcom.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Tested-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-22net: ethernet: bgmac: use phydev from struct net_devicePhilippe Reynes1-1/+0
The private structure contain a pointer to phydev, but the structure net_device already contain such pointer. So we can remove the pointer phydev in the private structure, and update the driver to use the one contained in struct net_device. Signed-off-by: Philippe Reynes <tremyfr@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-09bgmac: Add support for ethtool statisticsFlorian Fainelli1-2/+2
Read the statistics from the BGMAC's builtin MAC and return them to user-space using the standard ethtool helpers. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-14bgmac: fix MAC soft-reset bit for corerev > 4Felix Fietkau1-3/+3
Only core revisions older than 4 use BGMAC_CMDCFG_SR_REV0. This mainly fixes support for BCM4708A0KF SoCs with Ethernet core rev 5 (it means only some devices as most of BCM4708A0KF-s got core rev 4). This was tested for regressions on BCM47094 which doesn't seem to care which bit gets used. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-06-10bgmac: Utilize BRCM_PSEUDO_PHY_ADDRFlorian Fainelli1-1/+2
What BGMAC defines as BGMAC_PHY_NOREGS is in fact the Broadcom Ethernet switches' pseudo-PHY address (30), utilize the newly introduced constant from brcmphy.h Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-14bgmac: drop ring->num_slotsFelix Fietkau1-2/+1
The ring size is always known at compile time, so make the code a bit more efficient Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-14bgmac: increase rx ring size from 511 to 512Felix Fietkau1-1/+1
Limiting it to 511 looks like a failed attempt at leaving one descriptor empty to allow the hardware to stop processing a buffer that has not been prepared yet. However, this doesn't work because this affects the total ring size as well Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-14bgmac: set received skb headroom to NET_SKB_PADFelix Fietkau1-1/+3
A packet buffer offset of 30 bytes is inefficient, because the first 2 bytes end up in a different cacheline. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-14bgmac: leave interrupts disabled as long as there is work to doFelix Fietkau1-1/+0
Always poll rx and tx during NAPI poll instead of relying on the status of the first interrupt. This prevents bgmac_poll from leaving unfinished work around until the next IRQ. In my tests this makes bridging/routing throughput under heavy load more stable and ensures that no new IRQs arrive as long as bgmac_poll uses up the entire budget. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-14bgmac: simplify tx ring index handlingFelix Fietkau1-3/+3
Keep incrementing ring->start and ring->end instead of pointing it to the actual ring slot entry. This simplifies the calculation of the number of free slots. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Acked-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-23bgmac: implement GRO and use build_skbFelix Fietkau1-1/+6
This improves performance for routing and local rx Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-23bgmac: fix descriptor frame start/end definitionsFelix Fietkau1-2/+2
The start-of-frame and end-of-frame bits were accidentally swapped. In the current code it does not make any difference, since they are always used together. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-04bgmac: add support for Northstar SoC (BCM4707, BCM53018)Hauke Mehrtens1-0/+1
This adds support for the Northstar SoC. This SoC does not have a PMU in bcma and no register on it should be called. In addition it support 2.5 GBit/s Ethernet to the PHY. This GMAC core is not fully working there are still problems with the DMA controller. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-04bgmac: add support for new BGMAC_CMDCFG_SR position on core rev >= 4Hauke Mehrtens1-1/+3
The BGMAC_CMDCFG_SR register is at a different position on core rev >= 4 We do not know where this register is on a rev 5 or higher core, I have newer seen such a core. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Acked-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-04bgmac: initialize the DMA controller of core rev >= 4Hauke Mehrtens1-0/+50
The DMA controller used in the device supported by GMAC with core rev >= 4 has some new options which are now set to the default values used in the Broadcom SDK. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Acked-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-27bgmac: drop duplicated PHY definesRafał Miłecki1-21/+0
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-11bgmac: replace some magic values with definesRafał Miłecki1-1/+5
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-09bgmac: connect to PHY and make use of PHY deviceRafał Miłecki1-8/+4
We were already registering MDIO bus, but we were not connecting bgmac to the PHY. Add proper call and implement adjust link function to switch MAC into requested state. At the same time it's possible to drop our internal PHY management. This is a "standard" PHY, so the "Generic PHY" driver works perfectly fine with this. Don't duplicate the code. Finally make use of phy_ethtool_[gs]set functions instead implementing them from scratch. This change was successfully tested on BCM5357. I was able to autonegotiate 1000Mb/s full duplex, as well as force any of the 10/100/1000 half/full modes. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Acked-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-09-16bgmac: implement unaligned addressing for DMA rings that support itRafał Miłecki1-0/+2
This is important patch for new devices that support unaligned addressing. That devices suffer from the backward-compatibility bug in DMA engine. In theory we should be able to use old mechanism, but in practice DMA address seems to be randomly copied into status register when hardware reaches end of a ring. This breaks reading slot number from status register and we can't use DMA anymore. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-09-16bgmac: fix internal switch initializationRafał Miłecki1-1/+1
Some devices (BCM4749, BCM5357, BCM53572) have internal switch that requires initialization. We already have code for this, but because of the typo in code it was never working. This resulted in network not working for some routers and possibility of soft-bricking them. Use correct bit for switch initialization and fix typo in the define. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Cc: stable@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
2013-03-07bgmac: register MII busRafał Miłecki1-0/+1
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-13bgmac: return error on failed PHY writeRafał Miłecki1-3/+0
Some callers may want to know if PHY write succeed. Also make PHY functions static, they are not exported anywhere. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-06bgmac: implement missing code for BCM53572Hauke Mehrtens1-1/+1
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-09bgmac: driver for GBit MAC core on BCMA busRafał Miłecki1-0/+456
BCMA is a Broadcom specific bus with devices AKA cores. All recent BCMA based SoCs have gigabit ethernet provided by the GBit MAC core. This patch adds driver for such a cores registering itself as a netdev. It has been tested on a BCM4706 and BCM4718 chipsets. In the kernel tree there is already b44 driver which has some common things with bgmac, however there are many differences that has led to the decision or writing a new driver: 1) GBit MAC cores appear on BCMA bus (not SSB as in case of b44) 2) There is 64bit DMA engine which differs from 32bit one 3) There is no CAM (Content Addressable Memory) in GBit MAC 4) We have 4 TX queues on GBit MAC devices (instead of 1) 5) Many registers have different addresses/values 6) RX header flags are also different The driver in it's state is functional how, however there is of course place for improvements: 1) Supporting more net_device_ops 2) SUpporting more ethtool_ops 3) Unaligned addressing in DMA 4) Writing separated PHY driver Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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