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2016-07-10x86/quirks: Add early quirk to reset Apple AirPort cardLukas Wunner
The EFI firmware on Macs contains a full-fledged network stack for downloading OS X images from osrecovery.apple.com. Unfortunately on Macs introduced 2011 and 2012, EFI brings up the Broadcom 4331 wireless card on every boot and leaves it enabled even after ExitBootServices has been called. The card continues to assert its IRQ line, causing spurious interrupts if the IRQ is shared. It also corrupts memory by DMAing received packets, allowing for remote code execution over the air. This only stops when a driver is loaded for the wireless card, which may be never if the driver is not installed or blacklisted. The issue seems to be constrained to the Broadcom 4331. Chris Milsted has verified that the newer Broadcom 4360 built into the MacBookPro11,3 (2013/2014) does not exhibit this behaviour. The chances that Apple will ever supply a firmware fix for the older machines appear to be zero. The solution is to reset the card on boot by writing to a reset bit in its mmio space. This must be done as an early quirk and not as a plain vanilla PCI quirk to successfully combat memory corruption by DMAed packets: Matthew Garrett found out in 2012 that the packets are written to EfiBootServicesData memory (http://mjg59.dreamwidth.org/11235.html). This type of memory is made available to the page allocator by efi_free_boot_services(). Plain vanilla PCI quirks run much later, in subsys initcall level. In-between a time window would be open for memory corruption. Random crashes occurring in this time window and attributed to DMAed packets have indeed been observed in the wild by Chris Bainbridge. When Matthew Garrett analyzed the memory corruption issue in 2012, he sought to fix it with a grub quirk which transitions the card to D3hot: http://git.savannah.gnu.org/cgit/grub.git/commit/?id=9d34bb85da56 This approach does not help users with other bootloaders and while it may prevent DMAed packets, it does not cure the spurious interrupts emanating from the card. Unfortunately the card's mmio space is inaccessible in D3hot, so to reset it, we have to undo the effect of Matthew's grub patch and transition the card back to D0. Note that the quirk takes a few shortcuts to reduce the amount of code: The size of BAR 0 and the location of the PM capability is identical on all affected machines and therefore hardcoded. Only the address of BAR 0 differs between models. Also, it is assumed that the BCMA core currently mapped is the 802.11 core. The EFI driver seems to always take care of this. Michael Büsch, Bjorn Helgaas and Matt Fleming contributed feedback towards finding the best solution to this problem. The following should be a comprehensive list of affected models: iMac13,1 2012 21.5" [Root Port 00:1c.3 = 8086:1e16] iMac13,2 2012 27" [Root Port 00:1c.3 = 8086:1e16] Macmini5,1 2011 i5 2.3 GHz [Root Port 00:1c.1 = 8086:1c12] Macmini5,2 2011 i5 2.5 GHz [Root Port 00:1c.1 = 8086:1c12] Macmini5,3 2011 i7 2.0 GHz [Root Port 00:1c.1 = 8086:1c12] Macmini6,1 2012 i5 2.5 GHz [Root Port 00:1c.1 = 8086:1e12] Macmini6,2 2012 i7 2.3 GHz [Root Port 00:1c.1 = 8086:1e12] MacBookPro8,1 2011 13" [Root Port 00:1c.1 = 8086:1c12] MacBookPro8,2 2011 15" [Root Port 00:1c.1 = 8086:1c12] MacBookPro8,3 2011 17" [Root Port 00:1c.1 = 8086:1c12] MacBookPro9,1 2012 15" [Root Port 00:1c.1 = 8086:1e12] MacBookPro9,2 2012 13" [Root Port 00:1c.1 = 8086:1e12] MacBookPro10,1 2012 15" [Root Port 00:1c.1 = 8086:1e12] MacBookPro10,2 2012 13" [Root Port 00:1c.1 = 8086:1e12] For posterity, spurious interrupts caused by the Broadcom 4331 wireless card resulted in splats like this (stacktrace omitted): irq 17: nobody cared (try booting with the "irqpoll" option) handlers: [<ffffffff81374370>] pcie_isr [<ffffffffc0704550>] sdhci_irq [sdhci] threaded [<ffffffffc07013c0>] sdhci_thread_irq [sdhci] [<ffffffffc0a0b960>] azx_interrupt [snd_hda_codec] Disabling IRQ #17 Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=79301 Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=111781 Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=728916 Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=895951#c16 Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1009819 Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1098621 Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1149632#c5 Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1279130 Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1332732 Tested-by: Konstantin Simanov <k.simanov@stlk.ru> # [MacBookPro8,1] Tested-by: Lukas Wunner <lukas@wunner.de> # [MacBookPro9,1] Tested-by: Bryan Paradis <bryan.paradis@gmail.com> # [MacBookPro9,2] Tested-by: Andrew Worsley <amworsley@gmail.com> # [MacBookPro10,1] Tested-by: Chris Bainbridge <chris.bainbridge@gmail.com> # [MacBookPro10,2] Signed-off-by: Lukas Wunner <lukas@wunner.de> Acked-by: Rafał Miłecki <zajec5@gmail.com> Acked-by: Matt Fleming <matt@codeblueprint.co.uk> Cc: Andy Lutomirski <luto@kernel.org> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Chris Milsted <cmilsted@redhat.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Matthew Garrett <mjg59@srcf.ucam.org> Cc: Michael Buesch <m@bues.ch> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Yinghai Lu <yinghai@kernel.org> Cc: b43-dev@lists.infradead.org Cc: linux-pci@vger.kernel.org Cc: linux-wireless@vger.kernel.org Cc: stable@vger.kernel.org Cc: stable@vger.kernel.org # 123456789abc: x86/quirks: Apply nvidia_bugs quirk only on root bus Cc: stable@vger.kernel.org # 123456789abc: x86/quirks: Reintroduce scanning of secondary buses Link: http://lkml.kernel.org/r/48d0972ac82a53d460e5fce77a07b2560db95203.1465690253.git.lukas@wunner.de [ Did minor readability edits. ] Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-05-24Merge tag 'for-linus-20160523' of git://git.infradead.org/linux-mtdLinus Torvalds
Pull MTD updates from Brian Norris: "First cycle with Boris as NAND maintainer! Many (most) bullets stolen from him. Generic: - Migrated NAND LED trigger to be a generic MTD trigger NAND: - Introduction of the "ECC algorithm" concept, to avoid overloading the ECC mode field too much more - Replaced the nand_ecclayout infrastructure with something a little more flexible (finally!) and future proof - Rework of the OMAP GPMC and NAND drivers; the TI folks pulled some of this into their own tree as well - Prepare the sunxi NAND driver to receive DMA support - Handle bitflips in erased pages on GPMI revisions that do not support this in hardware. SPI NOR: - Start using the spi_flash_read() API for SPI drivers that support it (i.e., SPI drivers with special memory-mapped flash modes) And other small scattered improvments" * tag 'for-linus-20160523' of git://git.infradead.org/linux-mtd: (155 commits) mtd: spi-nor: support GigaDevice gd25lq64c mtd: nand_bch: fix spelling of "probably" mtd: brcmnand: respect ECC algorithm set by NAND subsystem gpmi-nand: Handle ECC Errors in erased pages Documentation: devicetree: deprecate "soft_bch" nand-ecc-mode value mtd: nand: add support for "nand-ecc-algo" DT property mtd: mtd: drop NAND_ECC_SOFT_BCH enum value mtd: drop support for NAND_ECC_SOFT_BCH as "soft_bch" mapping mtd: nand: read ECC algorithm from the new field mtd: nand: fsmc: validate ECC setup by checking algorithm directly mtd: nand: set ECC algorithm to Hamming on fallback staging: mt29f_spinand: set ECC algorithm explicitly CRIS v32: nand: set ECC algorithm explicitly mtd: nand: atmel: set ECC algorithm explicitly mtd: nand: davinci: set ECC algorithm explicitly mtd: nand: bf5xx: set ECC algorithm explicitly mtd: nand: omap2: Fix high memory dma prefetch transfer mtd: nand: omap2: Start dma request before enabling prefetch mtd: nandsim: add __init attribute mtd: nand: move of_get_nand_xxx() helpers into nand_base.c ...
2016-04-04mtd: bcm47xxsflash: use ioremap_cache() instead of KSEG0ADDR()Brian Norris
Using KSEG0ADDR makes code highly MIPS dependent and not portable. Thanks to the fix a68f376 ("MIPS: io.h: Define `ioremap_cache'") we can use ioremap_cache which is generic and supported on MIPS as well now. KSEG0ADDR was translating 0x1c000000 into 0x9c000000. With ioremap_cache we use MIPS's __ioremap (and then remap_area_pages). This results in different address (e.g. 0xc0080000) but it still should be cached as expected and it was successfully tested with BCM47186B0. Other than that drivers/bcma/driver_chipcommon_sflash.c nicely setups a struct resource for access window, but we wren't using it. Use it now and drop duplicated info. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
2016-03-23bcma: fix building without OF_IRQArnd Bergmann
The bcma driver core can be built with or without DT support, but it fails to build when CONFIG_OF=y and CONFIG_OF_IRQ=n, which can happen on platforms that do not support IRQ domains. ERROR: "irq_create_of_mapping" [drivers/bcma/bcma.ko] undefined! ERROR: "of_irq_parse_raw" [drivers/bcma/bcma.ko] undefined! ERROR: "of_irq_parse_one" [drivers/bcma/bcma.ko] undefined! This adds another compile-time check for OF_IRQ, but also gets rid of now unneeded #ifdef checks: Using the simpler IS_ENABLED() check for OF_IRQ also covers the case of not having CONFIG_OF enabled. The check for CONFIG_OF_ADDRESS was added to allow building on architectures without OF_ADDRESS, but that has been addressed already in b1d06b60e90c ("of: Provide static inline function for of_translate_address if needed"). Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2016-03-07bcma: move flash detection code to ChipCommon core driverRafał Miłecki
Flashes are attached and accessible through ChipCommon core, they aren't connected to MIPS one. Moreover some new ARM devices (e.g. BCM47189) may have serial flash accessibility using ChipCommon registers as well. To support them we can't keep this code in MIPS core driver. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2016-03-07bcma: move parallel flash support to separated fileRafał Miłecki
This follows the way of handling other flashes and cleans code a bit. As next task we will want to move flash code to ChipCommon driver as: 1) Flash controllers are accesible using ChipCommon registers 2) This code isn't MIPS specific This change prepares bcma for that. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2016-03-07bcma: drop unneeded fields from bcma_pflash structRafał Miłecki
Most of info stored in this struct wasn't really used anywhere as we put all that data in platform data & resource as well. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2016-02-16Merge tag 'wireless-drivers-next-for-davem-2016-02-12' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next Kalle Valo says: ==================== Major changes: wl12xx * add device tree support for SPI mwifiex * add debugfs file to read chip information * add MSIx support for newer pcie chipsets (8997 onwards) * add schedule scan support * add WoWLAN net-detect support * firmware dump support for w8997 chipset iwlwifi * continue the work on multiple Rx queues * add support for beacon storing used in low power states * use the regular firmware image of WoWLAN * fix 8000 devices for Big Endian machines * more firmware debug hooks * add support for P2P Client snoozing * make the beacon filtering for AP mode configurable * fix transmit queues overflow with LSO libertas * add support for setting power save via cfg80211 ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-06bcma: claim only 14e4:4365 PCI Dell card with SoftMAC BCM43142Rafał Miłecki
It seems 14e4:4365 pattern is too generic as there are two devices: 1) 14e4:4365 1028:0016 with SoftMAC BCM43142 chipset 2) 14e4:4365 14e4:4365 with FullMAC BCM4366 chipset The later one was found in D-Link DIR-885L router and we want to let brcmfmac handle it. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2016-02-06bcma: add support for BCM47094Rafał Miłecki
It's another SoC with 32 GPIOs and simplified watchdog handling. It was tested on D-Link DIR-885L. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2016-02-06bcma: init serial console directly from ChipCommon codeRafał Miłecki
UART is connected to and controlled over ChipCommon core. It doesn't have much to do with MIPS core (where we initialize it currently) except just existing on embedded systemms. There isn't point of such cross-core initialization (and we needed #ifdef anyway) so just handle it in ChipCommon. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2016-02-06bcma: support PMU present as separated bus coreRafał Miłecki
On recent Broadcom chipsets PMU is present as separated core and it can't be accessed using ChipCommon anymore as it fails with e.g.: [ 0.000577] Unhandled fault: external abort on non-linefetch (0x1008) at 0xf1000604 Solve it by using a new (PMU) core pointer set to ChipCommon or PMU depending on the hardware capabilities. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2016-02-06bcma: use _PMU_ in all names of PMU registersRafał Miłecki
PMU (Power Management Unit) seems to be a separated piece of hardware, just accessed using ChipCommon core registers. In recent Broadcom chipsets PMU is not bounded to CC but available as separated core. To make code cleaner & easier to review (for a correct R/W access) use clearer names. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2016-02-06bcma: support chipsets with PMU and GCI cores (devices)Rafał Miłecki
Both cores are another exceptions. They are not accessed in a standard way and to they don't need or have wrapping addresses. This fixes bus scanning after finding such core. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2016-02-06bcma: identify bus cores (devices) found on BCM47189Rafał Miłecki
Add missing defines and print proper names. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2016-02-06bcma: support identifying MX25L25635F serial flashRafał Miłecki
It's a Macronix 32 MiB flash found on board with BCM47189 SoC. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2016-01-17Merge tag 'gpio-v4.5-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio Pull GPIO updates from Linus Walleij: "Here is the bulk of GPIO changes for v4.5. Notably there are big refactorings mostly by myself, aimed at getting the gpio_chip into a shape that makes me believe I can proceed to preserve state for a proper userspace ABI (character device) that has already been proposed once, but resulted in the feedback that I need to go back and restructure stuff. So I've been restructuring stuff. On the way I ran into brokenness (return code from the get_value() callback) and had to fix it. Also, refactored generic GPIO to be simpler. Some of that is still waiting to trickle down from the subsystems all over the kernel that provide random gpio_chips, I've touched every single GPIO driver in the kernel now, oh man I didn't know I was responsible for so much... Apart from that we're churning along as usual. I took some effort to test and retest so it should merge nicely and we shook out a couple of bugs in -next. Infrastructural changes: - In struct gpio_chip, rename the .dev node to .parent to better reflect the fact that this is not the GPIO struct device abstraction. We will add that soon so this would be totallt confusing. - It was noted that the driver .get_value() callbacks was sometimes reporting negative -ERR values to the gpiolib core, expecting them to be propagated to consumer gpiod_get_value() and gpio_get_value() calls. This was not happening, so as there was a mess of drivers returning negative errors and some returning "anything else than zero" to indicate that a line was active. As some would have bit 31 set to indicate "line active" it clashed with negative error codes. This is fixed by the largeish series clamping values in all drivers with !!value to [0,1] and then augmenting the code to propagate error codes to consumers. (Includes some ACKed patches in other subsystems.) - Add a void *data pointer to struct gpio_chip. The container_of() design pattern is indeed very nice, but we want to reform the struct gpio_chip to be a non-volative, stateless business, and keep states internal to the gpiolib to be able to hold on to the state when adding a proper userspace ABI (character device) further down the road. To achieve this, drivers need a handle at the internal state that is not dependent on their struct gpio_chip() so we add gpiochip_add_data() and gpiochip_get_data() following the pattern of many other subsystems. All the "use gpiochip data pointer" patches transforms drivers to this scheme. - The Generic GPIO chip header has been merged into the general <linux/gpio/driver.h> header, and the custom header for that removed. Instead of having a separate mm_gpio_chip struct for these generic drivers, merge that into struct gpio_chip, simplifying the code and removing the need for separate and confusing includes. Misc improvements: - Stabilize the way GPIOs are looked up from the ACPI legacy specification. - Incremental driver features for PXA, PCA953X, Lantiq (patches from the OpenWRT community), RCAR, Zynq, PL061, 104-idi-48 New drivers: - Add a GPIO chip to the ALSA SoC AC97 driver. - Add a new Broadcom NSP SoC driver (this lands in the pinctrl dir, but the branch is merged here too to account for infrastructural changes). - The sx150x driver now supports the sx1502" * tag 'gpio-v4.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (220 commits) gpio: generic: make bgpio_pdata always visible gpiolib: fix chip order in gpio list gpio: mpc8xxx: Do not use gpiochip_get_data() in mpc8xxx_gpio_save_regs() gpio: mm-lantiq: Do not use gpiochip_get_data() in ltq_mm_save_regs() gpio: brcmstb: Allow building driver for BMIPS_GENERIC gpio: brcmstb: Set endian flags for big-endian MIPS gpio: moxart: fix build regression gpio: xilinx: Do not use gpiochip_get_data() in xgpio_save_regs() leds: pca9532: use gpiochip data pointer leds: tca6507: use gpiochip data pointer hid: cp2112: use gpiochip data pointer bcma: gpio: use gpiochip data pointer avr32: gpio: use gpiochip data pointer video: fbdev: via: use gpiochip data pointer gpio: pch: Optimize pch_gpio_get() Revert "pinctrl: lantiq: Implement gpio_chip.to_irq" pinctrl: nsp-gpio: use gpiochip data pointer pinctrl: vt8500-wmt: use gpiochip data pointer pinctrl: exynos5440: use gpiochip data pointer pinctrl: at91-pio4: use gpiochip data pointer ...
2016-01-07bcma: gpio: use gpiochip data pointerLinus Walleij
This makes the driver use the data pointer added to the gpio_chip to store a pointer to the state container instead of relying on container_of(). Cc: Kalle Valo <kvalo@codeaurora.org> Cc: linux-wireless@vger.kernel.org Acked-by: Hauke Mehrtens <hauke@hauke-m.de> Acked-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-12-31bcma: use module_init for the main part of bus initializationRafał Miłecki
So far we were using fs_initcall. It was (and still is) needed because struct bus_type has to be registered early. However main bus initialization has to happen later as it requires SPROM which depends on NVRAM which depends on mtd. Solve it by using fs_initcall only for bus_register call and module_init for the rest. It affects bcma only when built-in obviously. This was tested with BCM4706 and BCM5357C0 (BCM47XX), BCM4708A0 (ARCH_BCM_5301X) and BCM43225 (PCIe card with bcma as module). Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-11-19gpio: change member .dev to .parentLinus Walleij
The name .dev in a struct is normally reserved for a struct device that is let us say a superclass to the thing described by the struct. struct gpio_chip stands out by confusingly using a struct device *dev to point to the parent device (such as a platform_device) that represents the hardware. As we want to give gpio_chip:s real devices, this is not working. We need to rename this member to parent. This was done by two coccinelle scripts, I guess it is possible to combine them into one, but I don't know such stuff. They look like this: @@ struct gpio_chip *var; @@ -var->dev +var->parent and: @@ struct gpio_chip var; @@ -var.dev +var.parent and: @@ struct bgpio_chip *var; @@ -var->gc.dev +var->gc.parent Plus a few instances of bgpio that I couldn't figure out how to teach Coccinelle to rewrite. This patch hits all over the place, but I *strongly* prefer this solution to any piecemal approaches that just exercise patch mechanics all over the place. It mainly hits drivers/gpio and drivers/pinctrl which is my own backyard anyway. Cc: Haavard Skinnemoen <hskinnemoen@gmail.com> Cc: Rafał Miłecki <zajec5@gmail.com> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com> Cc: Alek Du <alek.du@intel.com> Cc: Jaroslav Kysela <perex@perex.cz> Cc: Takashi Iwai <tiwai@suse.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Lee Jones <lee.jones@linaro.org> Acked-by: Jiri Kosina <jkosina@suse.cz> Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no> Acked-by: Jacek Anaszewski <j.anaszewski@samsung.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-09-29bcma: add support for population subnodes also when build as moduleHauke Mehrtens
of_default_bus_match_table was not exported earlier, so it could only be accessed by code compiled into the kernel. A new function of_platform_default_populate() was added which uses of_default_bus_match_table and this function is also exported. This way it is possible to create a bus with the content of of_default_bus_match_table and we can remove the hacks from bcma. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-08-18bcma: switch GPIO portions to use GPIOLIB_IRQCHIPLinus Walleij
This switches the BCMA GPIO driver to use GPIOLIB_IRQCHIP to handle its interrupts instead of rolling its own copy of the irqdomain handling etc. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-08-10bcma: fix access to host_pdev for PCIe devicesHauke Mehrtens
bus->host_pdev is part of a union so bus->host_pdev != NULL is probably also true for PCIe devices, because there it accesses bus->host_pci. If we access the dev member at the offset defined in struct platform_device in struct pci_dev instead we probably get something else. This patch adds a new function which returns the host dev struct and NULL if we do not have a host dev. When this gets registered on MIPS brcm47xx we do not have a host dev in some situations. This function could also be used in other places. This problem was introduced in this commit: commit cae761b5a6bdc597ba476a040fdcd5b4bc559b85 Author: Rafa? Mi?ecki <zajec5@gmail.com> Date: Sun Jun 28 17:17:13 2015 +0200 bcma: populate bus DT subnodes as platform_device-s Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-07-26bcma: fix build error when build as moduleHauke Mehrtens
Currently of_default_bus_match_table is not exported so we can only use this feature when bcma is build into the kernel. This patch removes support for child buses when bcma is build as a module as a temporary fix for a build problem introduces in this commit: commit cae761b5a6bdc597ba476a040fdcd5b4bc559b85 Author: Rafał Miłecki <zajec5@gmail.com> Date: Sun Jun 28 17:17:13 2015 +0200 bcma: populate bus DT subnodes as platform_device-s Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Fixes: cae761b5a6bd ("bcma: populate bus DT subnodes as platform_device-s") Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-07-21bcma: populate bus DT subnodes as platform_device-sRafał Miłecki
Our bus should allow defining children nodes as we may want to specify devices attached to the bus. This is required e.g. to specify NAND or ChipCommon cores and use bus's address and IRQ mappings. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-06-08bcma: lower dependency of BCMA_DRIVER_PCI_HOSTMODERafał Miłecki
This extension of BCMA_DRIVER_PCI has no reason to depend on BCMA_HOST_PCI. User may just want to have PCI device attached to SoC registered without enabling any extra client mode code. This can be useful when having non-bcma PCI device attached or when using other PCI driver. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-05-09bcma: enable 32 GPIO pins for BCM4707Felix Fietkau
Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-05-09bcma: use absolute base for SoC GPIO pinsFelix Fietkau
On some BCM5301x ARM devices, user space still needs to control some system GPIO pins for which no driver exists. This is a lot easier to do with a predictable GPIO base. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-04-17Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds
Pull MIPS updates from Ralf Baechle: "This is the main pull request for MIPS for Linux 4.1. Most noteworthy: - Add more Octeon-optimized crypto functions - Octeon crypto preemption and locking fixes - Little endian support for Octeon - Use correct CSR to soft reset Octeons - Support LEDs on the Octeon-based DSR-1000N - Fix PCI interrupt mapping for the Octeon-based DSR-1000N - Mark prom_free_prom_memory() as __init for a number of systems - Support for Imagination's Pistachio SOC. This includes arch and CLK bits. I'd like to merge pinctrl bits later - Improve parallelism of csum_partial for certain pipelines - Organize DTB files in subdirs like other architectures - Implement read_sched_clock for all MIPS platforms other than Octeon - Massive series of 38 fixes and cleanups for the FPU emulator / kernel - Further FPU remulator work to support new features. This sits on a separate branch which also has been pulled into the 4.1 KVM branch - Clean up and fixes for the SEAD3 eval board; remove unused file - Various updates for Netlogic platforms - A number of small updates for Loongson 3 platforms - Increase the memory limit for ATH79 platforms to 256MB - A fair number of fixes and updates for BCM47xx platforms - Finish the implementation of XPA support - MIPS FDC support. No, not floppy controller but Fast Debug Channel :) - Detect the R16000 used in SGI legacy platforms - Fix Kconfig dependencies for the SSB bus support" * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (265 commits) MIPS: Makefile: Fix MIPS ASE detection code MIPS: asm: elf: Set O32 default FPU flags MIPS: BCM47XX: Fix detecting Microsoft MN-700 & Asus WL500G MIPS: Kconfig: Disable SMP/CPS for 64-bit MIPS: Hibernate: flush TLB entries earlier MIPS: smp-cps: cpu_set FPU mask if FPU present MIPS: lose_fpu(): Disable FPU when MSA enabled MIPS: ralink: add missing symbol for RALINK_ILL_ACC MIPS: ralink: Fix bad config symbol in PCI makefile. SSB: fix Kconfig dependencies MIPS: Malta: Detect and fix bad memsize values Revert "MIPS: Avoid pipeline stalls on some MIPS32R2 cores." MIPS: Octeon: Delete override of cpu_has_mips_r2_exec_hazard. MIPS: Fix cpu_has_mips_r2_exec_hazard. MIPS: kernel: entry.S: Set correct ISA level for mips_ihb MIPS: asm: spinlock: Fix addiu instruction for R10000_LLSC_WAR case MIPS: r4kcache: Use correct base register for MIPS R6 cache flushes MIPS: Kconfig: Fix typo for the r2-to-r6 emulator kernel parameter MIPS: unaligned: Fix regular load/store instruction emulation for EVA MIPS: unaligned: Surround load/store macros in do {} while statements ...
2015-04-01MIPS: BCM47xx: Move NVRAM header to the include/linux/.Rafał Miłecki
There are two reasons for having this header in the common place: 1) Simplifying drivers that read NVRAM entries. We will be able to safely call bcm47xx_nvram_* functions without #ifdef-s. 2) Getting NVRAM driver out of MIPS arch code. This is needed to support BCM5301X arch which also requires this NVRAM driver. Patch for that will follow once we get is reviewed. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Acked-by: Hauke Mehrtens <hauke@hauke-m.de> Cc: linux-mips@linux-mips.org Cc: Arnd Bergmann <arnd@arndb.de> Cc: Paul Walmsley <paul@pwsan.com> Cc: linux-soc@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/8619/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-03-20bcma: gpio: use predictable base for all BCM47XX busesRafał Miłecki
Some BCM47XX SoC routers have LEDs connected to extra PCIe bcma buses. Handling them in arch code requires predictable GPIO numbers. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-03-13Revert "bcma: Kconfig: Let it depend on PCI"Rafał Miłecki
This reverts commit b09f5ec18b16b82f4db8a735e453332db7514275. Now that we have fully working BCMA_DRIVER_PCI symbol (in can be safely disabled), there is no risk bcma will try to use PCI code without PCI available. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-03-13bcma: allow disabling (not building) PCI driverRafał Miłecki
It isn't required for bcma bus on SoCs, so provide some empty functions and allow disabling it. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-03-13bcma: move PCI IRQ control function to host specific codeRafał Miłecki
This function isn't really related to any bus core. It touches PCI device config registers only, so move it to the (PCI) host file. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-03-05bcma: prepare Kconfig symbol for PCI driverRafał Miłecki
Driver for PCIe core requires PCI to be enabled, however we shouldn't require it for the whole bus. Someone may be not interested in extra PCI devices and what's more there are SoCs without any PCI at all (like BCM5356C0, BCM5357*, BCM47186B0). For more details see Kconfig "help". Please note this patch doesn't allow disabling PCI drivers yet, as it requires more work on calls to bcma_core_pci_* functions. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-03-05bcma: move internal function declarations to private headerRafał Miłecki
These functions are not exported nor used anywhere, so there is no reason to put them in public headers. Also drop unused bcma_chipco_(suspend|resume). Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-03-05bcma: Kconfig: Let it depend on PCIChen Gang
bcma also needs PCI, just like IOMEM and DMA, so let it depend on PCI, or will cause building break for allmodconfig under c6x: CC [M] drivers/bcma/driver_pcie2.o drivers/bcma/driver_pcie2.c: In function 'bcma_core_pcie2_up': drivers/bcma/driver_pcie2.c:196:8: error: implicit declaration of function 'pcie_set_readrq' [-Werror=implicit-function-declaration] err = pcie_set_readrq(dev, pcie2->reqsize); ^ Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-03-03bcma: gpio: enable GPIO IRQ domain on BCM5301XRafał Miłecki
Just like on BCM47XX arch, BCM5301X also has ChipCommon with IRQ for GPIOs. Now we have interrupts working on BCM5301X we can finally make use of it. This has been successfully tested on 5 different devices (Buffalo, Luxul, Netgear). Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-03-03bcma: add missing includesRafał Miłecki
kbuild found out that commit 804e27dee49e ("bcma: support bringing up bus hosted on PCIe Gen 2") broke the build on m68k: drivers/bcma/driver_pcie2.c: In function 'bcma_core_pcie2_up': >> drivers/bcma/driver_pcie2.c:196:2: error: implicit declaration of function 'pcie_set_readrq' [-Werror\ =implicit-function-declaration] err = pcie_set_readrq(dev, pcie2->reqsize); ^ cc1: some warnings being treated as errors Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-03-02bcma: enable support for PCIe Gen 2 host devicesRafał Miłecki
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-03-02bcma: support bringing up bus hosted on PCIe Gen 2Rafał Miłecki
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-03-02bcma: change IRQ control function to accept bus as an argumentRafał Miłecki
It doesn't operate on PCI core, but PCI host device, so there is no point of passing core related struct. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-03-02bcma: add helpers bringing PCIe hosted bus up / downRafał Miłecki
Bringing PCIe hosted bus up requires operating on host-related core. Since we plan to support PCIe Gen 2 devices we should provide a helper picking the correct one (PCIE or PCIE2). Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-01-29bcma: implement host code support for PCIe Gen 2 devicesRafał Miłecki
This is stil incomplete, so we don't add PCI IDs of new devices yet. Purpose of this patch is to allow testing & adjusting rest of the code. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-01-29bcma: add early_init function for PCIe core and move some fix into itRafał Miłecki
There are some PCIe core fixes that need to be applied before accessing SPROM, otherwise reading it may fail. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-01-29bcma: add empty PCIe hostmode functions if support is disabledRafał Miłecki
This allows us to drop some #ifdef magic (mess). Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-01-29bcma: detect SPROM revision 11Rafał Miłecki
Extracting values from it is still unsupported, but at least we'll display some meaningful error now. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-01-29bcma: simplify freeing cores (internal devices structs)Rafał Miłecki
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-01-29bcma: fix watchdog on some ARM chipsetsRafał Miłecki
These chipsets don't need changing clock mode. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2015-01-23bcma: use standard bus scanning during early registerRafał Miłecki
Starting with kernel 3.19-rc1 early registration of bcma on MIPS is done a bit later, with memory allocator available. This allows us to simplify code by using standard bus scanning method. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 21:27:39 +0000