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* net: cpsw: am335x: Drop constant link checking from rx/tx path'sStefan Roese2014-08-28-18/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We noticed on the DXR2 platform (AM335x with a SMSC LAN9303 switch connected to the CPSW MAC) that the network performance in U-Boot is quite poor. Only when the transfer is started without a cable connected, and the cable is plugged after the first timeout "T" occured, an increased in performance can be seen. Debugging has revealed, that the cpsw driver has constant link checking builtin into the rx and tx functions. This results in the bad performance and seems to be unnecessary. The link has already been checked in the init function, before the transfer is started. This usually is sufficient. BTW: I have seen no other network driver in U-Boot so far, that constantly checks for link in the rx / tx functions. The performance numbers on the DXR2 board are: 0.56 MiB/s cpsw_check_link() in rx and tx path 0.87 MiB/s cpsw_check_link() only in tx path 1.0 MiB/s cpsw_check_link() only in rx path 2.7 MiB/s no cpsw_check_link() in rx and tx path So with this patch the network performance on DXR2 increases from 0.56 to 2.7 MiB/s (nearly 5 times as fast). Signed-off-by: Stefan Roese <sr@denx.de> Tested-by: Samuel Egli <samuel.egli@siemens.com> Tested-by: Heiko Schocher <hs@denx.de> Cc: Vladimir Koutny <vladimir.koutny@streamunlimited.com> Cc: Mugunthan V N <mugunthanvnm@ti.com> Cc: Joe Hershberger <joe.hershberger@gmail.com> Cc: Tom Rini <trini@ti.com>
* e1000: add i210 supportMarek Vasut2014-08-21-27/+180
| | | | | | | Add i210 support to the e1000 driver. Signed-off-by: Marek Vasut <marex@denx.de> Acked-by: Tim Harvey <tharvey@gateworks.com>
* e1000: Implement dcache supportMarek Vasut2014-08-21-22/+49
| | | | | | | | Implement proper support for cache flushing and invalidation into the Intel e1000 NIC driver. Signed-off-by: Marek Vasut <marex@denx.de> Acked-by: Tim Harvey <tharvey@gateworks.com>
* drivers: net: remove dead driversMasahiro Yamada2014-08-21-459/+0
| | | | | | | | | | The following configs are not defined at all: - CONFIG_INCA_IP_SWITCH - CONFIG_PBL2800_ETHER - CONFIG_PHY_ICPLUS Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* powerpc/T4240QDS/eth: some fix for XFIShaohui Xie2014-08-20-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | XFI is supported on T4QDS-XFI board, which removed slot3, and four LANEs of serdes2 are routed to a SFP+ cages, which to house fiber cable or direct attach cable(copper), the copper cable is used to emulate the 10GBASE-KR scenario. So, for XFI usage, there are two scenarios, one will use fiber cable, another will use copper cable. For fiber cable, there is NO PHY, while for copper cable, we need to use internal PHY which exist in Serdes to do auto-negotiation and link training, which implemented in kernel. We use hwconfig to define cable type for XFI, and fixup dtb based on the cable type. For copper cable, set below env in hwconfig: fsl_10gkr_copper:<10g_mac_name> the <10g_mac_name> can be fm1_10g1, fm1_10g2, fm2_10g1, fm2_10g2. The four <10g_mac_name>s do not have to be coexist in hwconfig. For XFI ports, if a given 10G port will use the copper cable for 10GBASE-KR, set the <10g_mac_name> of the port in hwconfig, otherwise, fiber cable will be assumed to be used for the port. For ex. if four XFI ports will both use copper cable, the hwconfig should contain: fsl_10gkr_copper:fm1_10g1,fm1_10g2,fm2_10g1,fm2_10g2 For fiber cable: 1. give PHY address to a XFI port, otherwise, the XFI ports will not be available in U-boot, there is no PHY physically for XFI when using fiber cable, this is just to make U-boot happy and we can use the XFI ports in U-boot. 2. fixup dtb to use fixed-link in case of fiber cable which has no PHY. Kernel requests that a MAC must have a PHY or fixed-link. When using XFI protocol, the MAC 9/10 on FM1 should init as 10G interface. Change serdes 2 protocol 56 to 55 which has same feature as 56 since 56 is not valid any longer. Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com> Reviewed-by: York Sun <yorksun@freescale.com>
* vitesse: remove duplicated argument to ||maxin.john@enea.com2014-08-09-1/+0
| | | | | | Remove the duplicated argument to || check Signed-off-by: Maxin B. John <maxin.john@enea.com>
* Change Andy Fleming's email addressAndy Fleming2014-08-06-2/+2
| | | | | | | Messages to afleming@freescale.com now bounce, and should be directed to my personal address at afleming@gmail.com Signed-off-by: Andy Fleming <afleming@gmail.com>
* Merge branch 'master' of git://git.denx.de/u-boot-armTom Rini2014-07-29-80/+81
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| * Merge branch 'u-boot-ti/master' into 'u-boot-arm/master'Albert ARIBAUD2014-07-28-3/+5
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| | * drivers: net: cpsw: add support for using second port as ethernetMugunthan V N2014-07-25-3/+5
| | | | | | | | | | | | | | | | | | | | | Add support for using the second slave port of cpsw to be used as primary ethernet. Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
| * | Merge branch 'u-boot-sh/rmobile' into 'u-boot-arm/master'Albert ARIBAUD2014-07-28-4/+7
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| | * | net: sh-eth: Add support R8A7794Nobuhiro Iwamatsu2014-07-24-4/+7
| | |/ | | | | | | | | | | | | | | | | | | R8A7794 has the same sh-ether IP core as other SH/rmobile. This patch adds support of R8A7794. Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
| * | Merge branch 'u-boot-sunxi/master' into 'u-boot-arm/master'Albert ARIBAUD2014-07-28-73/+69
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| | * | net: Rename and cleanup sunxi (Allwinner) emac driverStefan Roese2014-07-06-73/+69
| | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There have been 3 versions of the sunxi_emac support patch during its development. Somehow version 2 ended up in upstream u-boot where as the u-boot-sunxi git repo got version 3. This bumps the version in upstream u-boot to version 3 of the patch: - Initialize MII clock earlier so mii access to allow independent use - Name change from WEMAC to EMAC to match mainline kernel & chip manual - Cosmetic code cleanup Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: Henrik Nordstrom <henrik@henriknordstrom.net> Signed-off-by: Oliver Schinagl <oliver@schinagl.nl> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
* | | Merge branch 'master' of git://git.denx.de/u-boot-mpc85xxTom Rini2014-07-28-1/+8
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| * | net/fm: call fm_port_to_index() with proper checksRotariu Marian-Cristian2014-07-22-1/+8
| |/ | | | | | | | | | | | | | | Some of the fm_port_to_index() callers did not check for -1 return value and used -1 as an array index. Signed-off-by: Marian Rotariu <marian.rotariu@freescale.com> Reviewed-by: York Sun <yorksun@freescale.com>
* | stdio: Pass device pointer to stdio methodsSimon Glass2014-07-23-5/+5
|/ | | | | | | | | | | | | | | | | | | | | | | | | | At present stdio device functions do not get any clue as to which stdio device is being acted on. Some implementations go to great lengths to work around this, such as defining a whole separate set of functions for each possible device. For driver model we need to associate a stdio_dev with a device. It doesn't seem possible to continue with this work-around approach. Instead, add a stdio_dev pointer to each of the stdio member functions. Note: The serial drivers have the same problem, but it is not strictly necessary to fix that to get driver model running. Also, if we convert serial over to driver model the problem will go away. Code size increases by 244 bytes for Thumb2 and 428 for PowerPC. 22: stdio: Pass device pointer to stdio methods arm: (for 2/2 boards) all +244.0 bss -4.0 text +248.0 powerpc: (for 1/1 boards) all +428.0 text +428.0 Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Marek Vasut <marex@denx.de> Reviewed-by: Marek Vasut <marex@denx.de>
* armv8/fsl-lsch3: Add support to load and start MC FirmwareJ. German Rivera2014-07-03-0/+275
| | | | | | | | | | | | | | | | Adding support to load and start the Layerscape Management Complex (MC) firmware. First, the MC GCR register is set to 0 to reset all cores. MC firmware and DPL images are copied from their location in NOR flash to DDR. MC registers are updated with the location of these images. Deasserting the reset bit of MC GCR register releases core 0 to run. Core 1 will be released by MC firmware. Stop bits are not touched for this step. U-boot waits for MC until it boots up. In case of a failure, device tree is updated accordingly. The MC firmware image uses FIT format. Signed-off-by: J. German Rivera <German.Rivera@freescale.com> Signed-off-by: York Sun <yorksun@freescale.com> Signed-off-by: Lijun Pan <Lijun.Pan@freescale.com> Signed-off-by: Shruti Kanetkar <Shruti@Freescale.com>
* Merge branch 'u-boot/master' into 'u-boot-arm/master'Albert ARIBAUD2014-06-25-40/+101
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| * net: sh-eth: Fix typo from rESR_RTLF to EESR_RTLFNobuhiro Iwamatsu2014-06-10-1/+1
| | | | | | | | | | | | | | 'r' of rESR_RTLF is a mistake of E. Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
| * net: sh-eth: Fix coding styleNobuhiro Iwamatsu2014-06-10-22/+22
| | | | | | | | | | | | | | This fixes checkpatch's warning. Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
| * net: sh-eth: Add support R7S72100 of rmobileNobuhiro Iwamatsu2014-06-10-14/+77
| | | | | | | | | | | | | | | | | | The R7S72100 of ARM SoC that Renesas manufactured has one Ether port. This has the same IP SH-Ether. This patch adds support of the R7S72100 in SH-Ether. Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
| * phy: fix create_phy_by_mask for when its given an actual search maskCormier, Jonathan2014-06-05-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | get_phy_id returns -EIO when it can't read from a phy at a given addr. This would cause create_phy_by_mask to return prematurely before it had tested the other addresses in the provided mask. Example usage: Replace phydev = phy_connect(bus, phy_addr, dev, phy_if) with phydev = phy_find_by_mask(bus, phy_mask, phy_if) if (phydev) phy_connect_dev(phydev, dev); Signed-off-by: Cormier, Jonathan <jcormier@criticallink.com> Cc: Joe Hershberger <joe.hershberger@gmail.com>
* | net: macb: enable dcache in macbWu, Josh2014-06-14-4/+57
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add to code to flush the dcache after we writing in DMA buffer. Also we need invalidate the dcache before we check the status in the DMA buffer. Tested in SAMA5D3x-EK with gmac0. Tftp download speed shows in below: Disable DCache: 1.1 MiB/s Enable DCache: 1.6 MiB/s Increase speed with about 40%. The code should have no impact with the boards which are not enable_dcache(). Tested in AT91SAM9M10G45EK. Signed-off-by: Josh Wu <josh.wu@atmel.com> Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
* | macb: make checkpatch cleanAndreas Bießmann2014-06-14-27/+29
|/ | | | | | | | This also renames the CONFIG_SYS_MACB_xx defines. They are used just local and therefore don't need the CONFIG_SYS_ prefix. Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com> Reviewed-by: Josh Wu <josh.wu@atmel.com>
* net/designware: Make DMA burst length configurable and reduce by defaultIan Campbell2014-05-25-7/+7
| | | | | | | | | | | The correct value for this setting can vary across SoCs and boards, so make it configurable. Also reduce the default value to 8, which is the same default as used in the Linux driver. Signed-off-by: Ian Campbell <ijc@hellion.org.uk> Cc: Alexey Brodkin <abrodkin@synopsys.com>
* net/designware: reorder struct dw_eth_dev to pack more efficiently.Ian Campbell2014-05-25-6/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On Thu, 2014-05-08 at 22:26 +0100, Ian Campbell wrote: > The {r,t}xbuffs fields also need to be aligned. Previously this was done > implicitly because they immediately followed the descriptor tables. Make this > explicit and also move to the head of the struct. Looks like I managed to not actually commit the move of the field to the head of the struct! v3.1 follows.... Ian. 8<------------ >From 2937ba01841887317f6792709ed57cb86b5fc0cd Mon Sep 17 00:00:00 2001 From: Ian Campbell <ijc@hellion.org.uk> Date: Thu, 1 May 2014 19:45:15 +0100 Subject: [PATCH] net/designware: reorder struct dw_eth_dev to pack more efficiently. The {tx,rx}_mac_descrtable fields are aligned to ARCH_DMA_MINALIGN, which could be 256 or even larger. That means there is a potentially huge hole in the struct before those fields, so move them to the front where they are better packed. Moving them to the front also helps ensure that so long as dw_eth_dev is properly aligned (which it is since "net/designware: ensure device private data is DMA aligned.") the {tx,rx}_mac_descrtable will be too, or at least avoids having to worry too much about compiler specifics. The {r,t}xbuffs fields also need to be aligned. Previously this was done implicitly because they immediately followed the descriptor tables. Make this explicit and also move to the head of the struct. Signed-off-by: Ian Campbell <ijc@hellion.org.uk> Cc: Alexey Brodkin <abrodkin@synopsys.com> Tested-by: Siarhei Siamashka <siarhei.siamashka@gmail.com> Reviewed-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
* net/designware: ensure cache invalidations are aligned to ARCH_DMA_MINALIGNIan Campbell2014-05-25-5/+13
| | | | | | | | | | | This is required at least on ARM. When sending instead of simply invalidating the entire descriptor, flush as little as possible while still respecting ARCH_DMA_MINALIGN, as requested by Alexey. Signed-off-by: Ian Campbell <ijc@hellion.org.uk> Cc: Alexey Brodkin <abrodkin@synopsys.com>
* net/designware: ensure device private data is DMA aligned.Ian Campbell2014-05-25-1/+2
| | | | | | | | | | struct dw_eth_dev contains fields which are accessed via DMA, so make sure it is aligned to a dma boundary. Without this I see: ERROR: v7_dcache_inval_range - start address is not aligned - 0x7fb677e0 Signed-off-by: Ian Campbell <ijc@hellion.org.uk> Reviewed-by: Alexey Brodkin <abrodkin@synopsys.com> Acked-by: Marek Vasut <marex@denx.de>
* net: phy/vitesse: Add support for VSC8664 phy moduleChunhe Lan2014-05-16-0/+46
| | | | | | | | This patch adds support for VSC8664 PHY module which can be found on Freescale's T4240RDB boards. Signed-off-by: Chunhe Lan <Chunhe.Lan@freescale.com> Reviewed-by: York Sun <yorksun@freescale.com>
* powerpc/85xx: add T4080 SoC supportShengzhou Liu2014-05-13-0/+1
| | | | | | | | The T4080 SoC is a low-power version of the T4160. T4080 combines 4 dual-threaded Power Architecture e6500 cores with single cluster and two memory complexes. Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
* powerpc/fman/memac: use default MDIO_HOLD valueShaohui Xie2014-05-13-6/+2
| | | | | | | | Current driver uses a Maximum value for MDIO_HOLD when doing 10G MDIO access, this is due to an errata A-006260 on T4 rev1.0 which is fixed on rev2.0, so remove the maximum value to use the default value for rev2.0. Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
* net/designware: call phy_connect_dev() to properly setup phylib deviceIan Campbell2014-05-12-0/+2
| | | | | | | | | | | This sets up the linkage from the phydev back to the ethernet device. This symptom of not doing this which I noticed was: <NULL> Waiting for PHY auto negotiation to complete.... rather than: dwmac.1c50000 Waiting for PHY auto negotiation to complete.... Signed-off-by: Ian Campbell <ijc@hellion.org.uk> Cc: Alexey Brodkin <Alexey.Brodkin@synopsys.com>
* net: rename and refactor eth_rand_ethaddr() functionMasahiro Yamada2014-05-12-2/+2
| | | | | | | | | | | | | | | | | | | | Some functions in include/net.h are ported from include/linux/etherdevice.h of Linux Kernel. For ex. is_zero_ether_addr() is_multicast_ether_addr() is_broadcast_ether_addr() is_valid_ether_addr(); So, we should use the same function name as that of Linux Kernel, eth_rand_addr(), for consistency. Besides, eth_rand_addr() has been implemented as an inline function. So it should not be surrounded by #ifdef CONFIG_RANDOM_MACADDR. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
* net/phy: enable get_phy_id redefinableShengzhou Liu2014-05-12-1/+2
| | | | | | | | | As some PHYs have non-standard PHY ID registers, PHY Id can't be read correctly by current get_phy_id function, so we enable get_phy_id redefinable to permit specific PHY driver having own specific get_phy_id function. Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
* AR8035/phy: Enable autonegotiation function for ar8035Xiaobo Xie2014-05-12-3/+1
| | | | | | | | | Function "genphy_parse_link()" used "if (mii_reg & BMSR_ANEGCAPABLE)" before, but used "if (phydev->supported & SUPPORTED_Autoneg)" now. So assign "phydev->supported" to "phydev->drv->features" for ar8035 to enable autonegotiation. Then removed the genphy_config_aneg() function. Signed-off-by: Xie Xiaobo <X.Xie@freescale.com>
* Merge branch 'u-boot/master'Albert ARIBAUD2014-05-09-866/+88
|\ | | | | | | | | | | | | Conflicts: drivers/net/Makefile (trivial merge)
| * net: zynq: Fix sparse warnings in gemMichal Simek2014-05-06-0/+1
| | | | | | | | | | | | | | | | | | | | Add missing header. Warnings: drivers/net/zynq_gem.c:491:5: warning: symbol 'zynq_gem_initialize' was not declared. Should it be static? drivers/net/zynq_gem.c:542:5: warning: symbol 'zynq_gem_of_init' was not declared. Should it be static? Signed-off-by: Michal Simek <michal.simek@xilinx.com>
| * net: zynq: Use predefined macros instead of hardcoded valueMichal Simek2014-05-06-1/+2
| | | | | | | | | | | | MII is used by this driver. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
| * Merge branch 'master' of git://git.denx.de/u-boot-mpc85xxTom Rini2014-04-25-8/+20
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| | * ar8031: modify the config func of ar8031 to ar8021_configZhao Qiang2014-04-22-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | ar8031 has the same config steps with ar8021, so change its config func to ar8021_config instead of genphy_config. Signed-off-by: Zhao Qiang <B45475@freescale.com> Reviewed-by: York Sun <yorksun@freescale.com>
| | * driver/net/fm/memac_phy: Initialize mdio_clock for SoCs wih FMANv3Priyanka Jain2014-04-22-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | MDIO clock needs to be initialized in u-boot code for SoCs having FMAN-v3(v3H or v3L) controller due to below reasons -On SoCs that have FMAN-v3H like B4860, default value of MDIO_CLK_DIV bits in mdio_stat(mdio_cfg) register generates mdio clock too high (much higher than 2.5MHz), violating the IEEE specs. -On SOCs that have FMAN-v3L like T1040, default value of MDIO_CLK_DIV bits is zero, so MDIO clock is disabled. So, for proper functioninig of MDIO, MDIO_CLK_DIV bits needs to be properly initialized. Also this type of initialization is generally done in PBI(pre-bootloader) phase using rcw.But for chips like T1040 which support deep-sleep, such type of initialization cannot be done in PBI phase due to the limitation that during deep-sleep resume, FMAN (MDIO) registers are not accessible in PBI phase. So, mdio clock initailization must be done as part of u-boot. This initialization code is implemented in memac_phy.c which gets compiled only for SoCs having FMANv3, so no extra compilation flag is required. Signed-off-by: Priyanka Jain <Priyanka.Jain@freescale.com> Reviewed-by: York Sun <yorksun@freescale.com>
| | * net/phy: Fix PHY id for VSC8514Codrin Ciubotariu2014-04-22-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the current Datasheet for VSC8514 there is a mistake, saying that the PHY id is 0x70570. The real value in the identifier registers is 0x70670. Linux PHY driver uses 0x70670 also. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@freescale.com> Cc: York Sun <yorksun@freescale.com> Reviewed-by: York Sun <yorksun@freescale.com>
| | * QE/FMAN: modify CONFIG_SYS_QE_FMAN_FW_ADDR to CONFIG_SYS_FMAN_FW_ADDR and ↵Zhao Qiang2014-04-22-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | CONFIG_SYS_QE_FW_ADDR CONFIG_SYS_QE_FMAN_FW_ADDR is used to both Fman and QE for microcode address. Now using CONFIG_SYS_FMAN_FW_ADDR for Fman microcode address, and CONFIG_SYS_QE_FW_ADDR for QE microcode address. Signed-off-by: Zhao Qiang <B45475@freescale.com> Reviewed-by: York Sun <yorksun@freescale.com>
| * | MIPS: drop incaip boardDaniel Schwierzeck2014-04-20-794/+0
| |/ | | | | | | | | | | | | | | | | This is dead hardware and no one is interested in making the necessary changes for upcoming features like generic board or driver model. Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> Cc: Wolfgang Denk <wd@denx.de>
| * e1000: remove redundant assignmentDavid Müller (ELSOFT AG)2014-04-18-1/+0
| | | | | | | | | | Signed-off-by: David Mueller <d.mueller@elsoft.ch> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
| * pcnet: force ordering of descriptor accessesPaul Burton2014-04-18-18/+19
| | | | | | | | | | | | | | | | | | | | | | The ordering of accesses to the rx & tx descriptors is important, yet the send & recv functions accessed them via regular structure accesses. This leaves the compiler with the opportunity to reorder those accesses or to hoist them outside of loops. Prevent that from happening by using readl & writel to access the descriptors. As a nice bonus, this removes the need for the driver to care about endianness. Signed-off-by: Paul Burton <paul.burton@imgtec.com>
| * pcnet: align rx buffers for cache invalidationPaul Burton2014-04-18-9/+12
| | | | | | | | | | | | | | | | | | | | The RX buffers are invalidated when a packet is received, however they were not suitably cache-line aligned. Allocate them seperately to the pcnet_priv structure and align to ARCH_DMA_MINALIGN in order to ensure suitable alignment for the cache invalidation, preventing anything else being placed in the same lines & lost. Signed-off-by: Paul Burton <paul.burton@imgtec.com>
| * pcnet: access descriptor rings & init block uncachedPaul Burton2014-04-18-31/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The prior accesses to the descriptor rings & init block via cached memory had a few issues: - The memory needs cache flushes or invalidation at the appropriate times, but was not necessarily aligned on cache line boundaries. This could lead to data being incorrectly lost or written back to RAM at the wrong time. - There are points where ordering of writes to the memory is important, but because it's cached memory the pcnet controller would see cache lines written back ordered by address. This could occasionally lead to hardware seeing descriptors in an incorrect state. - Flushing the cache constantly is inefficient. So, to avoid all of those issues simply access the descriptors & init block via uncached memory. The MIPS-specific UNCACHED_SDRAM macro is used to do this (retrieving an address in kseg1) as I could see no existing generic solution. Since the MIPS Malta board is the only user of the pcnet driver, hopefully this doesn't matter. Signed-off-by: Paul Burton <paul.burton@imgtec.com>
| * arm: remove lubbock board supportMasahiro Yamada2014-04-18-6/+0
| | | | | | | | | | | | | | | | | | | | | | Enough time has passed since this board was moved to Orphan. Remove. - Remove board/lubbock/* - Remove include/configs/lubbock.h - Cleanup defined(CONFIG_LUBBOCK) - Move the entry from boards.cfg to doc/README.scrapyard Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
generated by cgit v1.1 at 2024-12-26 09:08:35 +0000