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2013-09-26bcma: make bcma_core_pci_{up,down}() callable from atomic contextArend van Spriel
This patch removes the bcma_core_pci_power_save() call from the bcma_core_pci_{up,down}() functions as it tries to schedule thus requiring to call them from non-atomic context. The function bcma_core_pci_power_save() is now exported so the calling module can explicitly use it in non-atomic context. This fixes the 'scheduling while atomic' issue reported by Tod Jackson and Joe Perches. [ 13.210710] BUG: scheduling while atomic: dhcpcd/1800/0x00000202 [ 13.210718] Modules linked in: brcmsmac nouveau coretemp kvm_intel kvm cordic brcmutil bcma dell_wmi atl1c ttm mxm_wmi wmi [ 13.210756] CPU: 2 PID: 1800 Comm: dhcpcd Not tainted 3.11.0-wl #1 [ 13.210762] Hardware name: Alienware M11x R2/M11x R2, BIOS A04 11/23/2010 [ 13.210767] ffff880177c92c40 ffff880170fd1948 ffffffff8169af5b 0000000000000007 [ 13.210777] ffff880170fd1ab0 ffff880170fd1958 ffffffff81697ee2 ffff880170fd19d8 [ 13.210785] ffffffff816a19f5 00000000000f4240 000000000000d080 ffff880170fd1fd8 [ 13.210794] Call Trace: [ 13.210813] [<ffffffff8169af5b>] dump_stack+0x4f/0x84 [ 13.210826] [<ffffffff81697ee2>] __schedule_bug+0x43/0x51 [ 13.210837] [<ffffffff816a19f5>] __schedule+0x6e5/0x810 [ 13.210845] [<ffffffff816a1c34>] schedule+0x24/0x70 [ 13.210855] [<ffffffff816a04fc>] schedule_hrtimeout_range_clock+0x10c/0x150 [ 13.210867] [<ffffffff810684e0>] ? update_rmtp+0x60/0x60 [ 13.210877] [<ffffffff8106915f>] ? hrtimer_start_range_ns+0xf/0x20 [ 13.210887] [<ffffffff816a054e>] schedule_hrtimeout_range+0xe/0x10 [ 13.210897] [<ffffffff8104f6fb>] usleep_range+0x3b/0x40 [ 13.210910] [<ffffffffa00371af>] bcma_pcie_mdio_set_phy.isra.3+0x4f/0x80 [bcma] [ 13.210921] [<ffffffffa003729f>] bcma_pcie_mdio_write.isra.4+0xbf/0xd0 [bcma] [ 13.210932] [<ffffffffa0037498>] bcma_pcie_mdio_writeread.isra.6.constprop.13+0x18/0x30 [bcma] [ 13.210942] [<ffffffffa00374ee>] bcma_core_pci_power_save+0x3e/0x80 [bcma] [ 13.210953] [<ffffffffa003765d>] bcma_core_pci_up+0x2d/0x60 [bcma] [ 13.210975] [<ffffffffa03dc17c>] brcms_c_up+0xfc/0x430 [brcmsmac] [ 13.210989] [<ffffffffa03d1a7d>] brcms_up+0x1d/0x20 [brcmsmac] [ 13.211003] [<ffffffffa03d2498>] brcms_ops_start+0x298/0x340 [brcmsmac] [ 13.211020] [<ffffffff81600a12>] ? cfg80211_netdev_notifier_call+0xd2/0x5f0 [ 13.211030] [<ffffffff815fa53d>] ? packet_notifier+0xad/0x1d0 [ 13.211064] [<ffffffff81656e75>] ieee80211_do_open+0x325/0xf80 [ 13.211076] [<ffffffff8106ac09>] ? __raw_notifier_call_chain+0x9/0x10 [ 13.211086] [<ffffffff81657b41>] ieee80211_open+0x71/0x80 [ 13.211101] [<ffffffff81526267>] __dev_open+0x87/0xe0 [ 13.211109] [<ffffffff8152650c>] __dev_change_flags+0x9c/0x180 [ 13.211117] [<ffffffff815266a3>] dev_change_flags+0x23/0x70 [ 13.211127] [<ffffffff8158cd68>] devinet_ioctl+0x5b8/0x6a0 [ 13.211136] [<ffffffff8158d5c5>] inet_ioctl+0x75/0x90 [ 13.211147] [<ffffffff8150b38b>] sock_do_ioctl+0x2b/0x70 [ 13.211155] [<ffffffff8150b681>] sock_ioctl+0x71/0x2a0 [ 13.211169] [<ffffffff8114ed47>] do_vfs_ioctl+0x87/0x520 [ 13.211180] [<ffffffff8113f159>] ? ____fput+0x9/0x10 [ 13.211198] [<ffffffff8106228c>] ? task_work_run+0x9c/0xd0 [ 13.211202] [<ffffffff8114f271>] SyS_ioctl+0x91/0xb0 [ 13.211208] [<ffffffff816aa252>] system_call_fastpath+0x16/0x1b [ 13.211217] NOHZ: local_softirq_pending 202 The issue was introduced in v3.11 kernel by following commit: commit aa51e598d04c6acf5477934cd6383f5a17ce9029 Author: Hauke Mehrtens <hauke@hauke-m.de> Date: Sat Aug 24 00:32:31 2013 +0200 brcmsmac: use bcma PCIe up and down functions replace the calls to bcma_core_pci_extend_L1timer() by calls to the newly introduced bcma_core_pci_ip() and bcma_core_pci_down() Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Cc: Arend van Spriel <arend@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> This fix has been discussed with Hauke Mehrtens [1] selection option 3) and is intended for v3.12. Ref: [1] http://mid.gmane.org/5239B12D.3040206@hauke-m.de Cc: <stable@vger.kernel.org> # 3.11.x Cc: Tod Jackson <tod.jackson@gmail.com> Cc: Joe Perches <joe@perches.com> Cc: Rafal Milecki <zajec5@gmail.com> Cc: Hauke Mehrtens <hauke@hauke-m.de> Reviewed-by: Hante Meuleman <meuleman@broadcom.com> Signed-off-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-09-09bcma: fix error code handling on 64 Bit systemsHauke Mehrtens
On most 64 Bit systems unsigned long is 64 bit long and then -MAX_ERRNO is out of the range of a u32 used to store the error code in. This patch casts the -MAX_ERRNO to a u32 instead. This fixes a regression introduced in: commit fd4edf197544bae1c77d84bad354aa7ce1d08ce1 Author: Hauke Mehrtens <hauke@hauke-m.de> Date: Mon Jul 15 13:15:08 2013 +0200 bcma: fix handling of big addrl Reported-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Tested-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-08-26bcma: add bcma_core_pci_power_save()Hauke Mehrtens
This enables or disables power saving on the PCIe bus when the wifi is in operation or not. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-08-26bcma: do not export bcma_core_pci_extend_L1timer()Hauke Mehrtens
This is not called any more, do not export it. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-08-26bcma: add method to power up and down the PCIe core by wifi driverHauke Mehrtens
The wifi driver should tell the PCIe core that it is now in operation so that some workarounds can be applied and the power state is changed. This should replace the call to bcma_core_pci_extend_L1timer by the brcmsmac driver. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-08-26bcma: change max PCI read request size to 128Hauke Mehrtens
This PCIe controller does not support a max read request size above 128 bytes. The sold card I tested this controller with used 128 as default value, but some new routers are sold with BCM4331 chips, which have a default max read request size of 512. This device fails at the first DMA reqeust whch is bigger than 126 bytes. This patch changes the max read request size to 128 for every device on the PCIe link. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-07-22bcma: fix handling of big addrlHauke Mehrtens
The return value of bcma_erom_get_addr_desc() is a unsigned value and it could wrap around in the two complement writing. This happens for one core in the BCM4708 SoC. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-07-22bcma: return correct error code when bus scan failedHauke Mehrtens
It is better to return the actual error code than just -1. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-07-22bcma: make it possible to select SoC support without mipsHauke Mehrtens
To make it possible to use the SoC host interface with ARM SoCs do not depend on the MIPS driver any more. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-07-22bcma: add some more core namesHauke Mehrtens
These cores were found on a BCM4708 (chipid 53010), this is a ARM SoC with two Cortex A9 cores. bcma: bus0: Found chip with id 0xCF12, rev 0x00 and package 0x02 bcma: bus0: Core 0 found: ChipCommon (manuf 0x4BF, id 0x800, rev 0x2A, class 0x0) bcma: bus0: Core 1 found: DMA (manuf 0x4BF, id 0x502, rev 0x01, class 0x0) bcma: bus0: Core 2 found: GBit MAC (manuf 0x4BF, id 0x82D, rev 0x04, class 0x0) bcma: bus0: Core 3 found: GBit MAC (manuf 0x4BF, id 0x82D, rev 0x04, class 0x0) bcma: bus0: Core 4 found: GBit MAC (manuf 0x4BF, id 0x82D, rev 0x04, class 0x0) bcma: bus0: Core 5 found: GBit MAC (manuf 0x4BF, id 0x82D, rev 0x04, class 0x0) bcma: bus0: Core 6 found: PCIe Gen 2 (manuf 0x4BF, id 0x501, rev 0x01, class 0x0) bcma: bus0: Core 7 found: PCIe Gen 2 (manuf 0x4BF, id 0x501, rev 0x01, class 0x0) bcma: bus0: Core 8 found: ARM Cortex A9 core (ihost) (manuf 0x4BF, id 0x510, rev 0x01, class 0x0) bcma: bus0: Core 9 found: USB 2.0 (manuf 0x4BF, id 0x504, rev 0x01, class 0x0) bcma: bus0: Core 10 found: USB 3.0 (manuf 0x4BF, id 0x505, rev 0x01, class 0x0) bcma: bus0: Core 11 found: SDIO3 (manuf 0x4BF, id 0x503, rev 0x01, class 0x0) bcma: bus0: Core 12 found: ARM Cortex A9 JTAG (manuf 0x4BF, id 0x506, rev 0x01, class 0x0) bcma: bus0: Core 13 found: Denali DDR2/DDR3 memory controller (manuf 0x4BF, id 0x507, rev 0x01, class 0x0) bcma: bus0: Core 14 found: ROM (manuf 0x4BF, id 0x508, rev 0x01, class 0x0) bcma: bus0: Core 15 found: NAND flash controller (manuf 0x4BF, id 0x509, rev 0x01, class 0x0) bcma: bus0: Core 16 found: SPI flash controller (manuf 0x4BF, id 0x50A, rev 0x01, class 0x0) Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-06-27bcma: add support for BCM43142Rafał Miłecki
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-06-17bcma: use const for serial flash hardware tableRafał Miłecki
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-06-17bcma: update core (en|dis)abling functionsRafał Miłecki
Broadocm updated their code, this may be needed for newer hardware or some corner cases. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-06-12bcma: activate PCI host option by defaultHauke Mehrtens
Most users are using bcma with a PCIe card, activate support for this by default. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-06-12Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless Conflicts: drivers/net/wireless/ath/ath9k/Kconfig net/mac80211/iface.c
2013-05-22bcma: support SPROM rev 10Rafał Miłecki
This is pretty much the same as rev 9, there are just 2 extra fields we know about, but are not used/stored yet anyway. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-05-22bcma: prepare for supporting more SPROM sizesRafał Miłecki
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-05-22bcma: don't hardcode SPROM lengthRafał Miłecki
Pass it as an argument to all functions. This is requires as newer SPROM revisions have different lengths. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-05-17bcma: add more core IDsRafał Miłecki
PCIe and ARM CR4 cores were found on 14e4:43b1 AKA BCM4352. Reported-by: Gabriel Thörnblad <gabriel@thornblad.com> Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-05-09Merge tag 'for-linus-20130509' of git://git.infradead.org/linux-mtdLinus Torvalds
Pull MTD update from David Woodhouse: - Lots of cleanups from Artem, including deletion of some obsolete drivers - Support partitions larger than 4GiB in device tree - Support for new SPI chips * tag 'for-linus-20130509' of git://git.infradead.org/linux-mtd: (83 commits) mtd: omap2: Use module_platform_driver() mtd: bf5xx_nand: Use module_platform_driver() mtd: denali_dt: Remove redundant use of of_match_ptr mtd: denali_dt: Change return value to fix smatch warning mtd: denali_dt: Use module_platform_driver() mtd: denali_dt: Fix incorrect error check mtd: nand: subpage write support for hardware based ECC schemes mtd: omap2: use msecs_to_jiffies() mtd: nand_ids: use size macros mtd: nand_ids: improve LEGACY_ID_NAND macro a bit mtd: add 4 Toshiba nand chips for the full-id case mtd: add the support to parse out the full-id nand type mtd: add new fields to nand_flash_dev{} mtd: sh_flctl: Use of_match_ptr() macro mtd: gpio: Use of_match_ptr() macro mtd: gpio: Use devm_kzalloc() mtd: davinci_nand: Use of_match_ptr() mtd: dataflash: Use of_match_ptr() macro mtd: remove h720x flash support mtd: onenand: remove OneNAND simulator ...
2013-04-05bcma_mips: add a const qualifierArtem Bityutskiy
Be a bit stricter and add few more 'const' qualifiers. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Cc: "Rafał Miłecki" <zajec5@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-03-27bcma: export some gpio functionsHauke Mehrtens
These functions will be used by brcmsmac. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-03-27bcma: export bcma_chipco_get_alp_clock()Hauke Mehrtens
This function will be used by brcmsmac. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-03-27bcma: handle more devices in bcma_pmu_get_alp_clock()Hauke Mehrtens
Add some more chip IDs to bcma_pmu_get_alp_clock() Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-03-27bcma: use BCMA_CC_PMU_CTL_* constantsHauke Mehrtens
Instead of hard coding these values use the existing constants. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-03-27bcma: mark eromptr as __iomemHauke Mehrtens
This fixes some sparse warnings. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-03-25bcma: extract board_type from SPROMRafał Miłecki
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-03-18Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless Conflicts: net/nfc/llcp/llcp.c
2013-03-06bcma: implement disabling PLLsRafał Miłecki
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-03-06bcma: ignore extra GMAC cores on BCM4706Rafał Miłecki
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-03-01Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem
2013-02-27bcma: init spin lockHauke Mehrtens
This spin lock was not initialized. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-02-14Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless Conflicts: drivers/net/wireless/iwlwifi/dvm/tx.c
2013-02-08Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
Synchronize with 'net' in order to sort out some l2tp, wireless, and ipv6 GRE fixes that will be built on top of in 'net-next'. Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-08Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem
2013-02-06Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem
2013-02-05Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
Conflicts: drivers/net/ethernet/intel/e1000e/ethtool.c drivers/net/vmxnet3/vmxnet3_drv.c drivers/net/wireless/iwlwifi/dvm/tx.c net/ipv6/route.c The ipv6 route.c conflict is simple, just ignore the 'net' side change as we fixed the same problem in 'net-next' by eliminating cached neighbours from ipv6 routes. The e1000e conflict is an addition of a new statistic in the ethtool code, trivial. The vmxnet3 conflict is about one change in 'net' removing a guarding conditional, whilst in 'net-next' we had a netdev_info() conversion. The iwlwifi conflict is dealing with a WARN_ON() conversion in 'net-next' vs. a revert happening in 'net'. Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-04bcma: unregister gpios before unloading bcmaHauke Mehrtens
This patch unregisters the gpio chip before bcma gets unloaded. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Reported-by: Piotr Haber <phaber@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-02-01bcma: Xflash: reorder includes to make pr_fmt workRafał Miłecki
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-02-01Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem
2013-01-30bcma: add gpio_to_irqHauke Mehrtens
The old bcm47xx gpio code had support for gpio_to_irq, but the new code did not provide this function, but returned -ENXIO all the time. This patch adds the missing function. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-30bcma: register platform device for parallel flashRafał Miłecki
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-28bcma: fix NAND flash validationRafał Miłecki
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-28Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem
2013-01-28Merge branch 'master' of ↵John W. Linville
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless Conflicts: drivers/net/wireless/ath/ath9k/main.c drivers/net/wireless/iwlwifi/dvm/tx.c
2013-01-15Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
Conflicts: Documentation/networking/ip-sysctl.txt drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c Both conflicts were simply overlapping context. A build fix for qlcnic is in here too, simply removing the added devinit annotations which no longer exist. Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-14bcma: use consistent case for 'hex' constantsNathan Hintz
Signed-off-by: Nathan Hintz <nlhintz@hotmail.com> Acked-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-14bcma: add support for 1 and 2 byte extended config space accessNathan Hintz
The sanity checks allow 1 and 2 byte reads/writes of the extended PCI config space to proceed; however, the code only supports 4 byte reads/writes. This patch adds support for 1 and 2 byte reads/writes of the extended PCI config space. Signed-off-by: Nathan Hintz <nlhintz@hotmail.com> Acked-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-14bcma: don't map/unmap a subset of the PCI config spaceNathan Hintz
For PCI config space access offsets < 256 for device '0', bcma_extpci_write_config performs an 'ioremap_nocache' on a 4 byte section of the PCI config space (an area that has already previously been mapped), and then subsequently unmaps that 4 byte section. This can't be a good thing for future read access from that now unmapped location. Modify the config space writes to use the existing access functions (similar to how it is done for the reads). Signed-off-by: Nathan Hintz <nlhintz@hotmail.com> Acked-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-14bcma: jump to 'out' label for invalid 'func' valueNathan Hintz
Consistently jump to the 'out' label for error conditions (adds missing check for 'func' validity in bcma_extpci_write_config). Signed-off-by: Nathan Hintz <nlhintz@hotmail.com> Acked-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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