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2018-03-23platform/x86: mlx-platform: Add deffered bus functionalityVadim Pasternak1-0/+10
mlx-platform activates i2c-mux-reg, which creates buses needed by mlxreg-hotplug. If the mlxreg-hotplug probe runs before the i2c-mux-reg probe completes, it may attempt to connect a device to an adapter number that has not been created yet, and fail. Make mlx-platform driver record the highest bus number in mlxreg-hotplug platform data and defer mlxreg-hotplug probe until all the buses are created. Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> [dvhart: rewrite commit message more concisely] Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2018-03-23platform/x86: mlx-platform: Use define for the channel numbersVadim Pasternak1-1/+4
Add define for the channels number for mux device, instead of using hardcoded value inside the code in order to improve code readability. Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2018-02-09platform/x86: mlx-platform: Add support for new 200G IB and Ethernet systemsVadim Pasternak1-0/+142
It adds support for new Mellanox system types of basic classes qmb7, sn34, sn37, containing systems QMB700 (40x200GbE InfiniBand switch), SN3700 (32x200GbE and 16x400GbE Ethernet switch) and SN3410 (6x400GbE plus 48x50GbE Ethernet switch). These are the Top of the Rack systems, equipped with Mellanox COM-Express carrier board and switch board with Mellanox Quantum device, which supports InfiniBand switching with 40X200G ports and line rate of up to HDR speed or with Mellanox Spectrum-2 device, which supports Ethernet switching with 32X200G ports line rate of up to HDR speed. Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2018-02-09platform/x86: mlx-platform: Add support for new msn201x system typeVadim Pasternak1-0/+59
It adds support for new Mellanox system types of basic half unit size class msn201x, containing system MSN2010 (18x10GbE plus 4x4x25GbE) half and its derivatives. This is the Top of the Rack system, equipped with Mellanox Small Form Factor carrier board and switch board with Mellanox Spectrum device, which supports Ethernet switching with 32X100G ports line rate of up to EDR speed. Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2018-02-09platform/x86: mlx-platform: Add support for new msn274x system typeVadim Pasternak1-0/+124
It adds support for new Mellanox system types of basic class msn274x, containing system MSN2740 (32x100GbE Ethernet switch with cost reduction) and its derivatives. These are the Top of the Rack system, equipped with Mellanox Small Form Factor carrier board and switch board with Mellanox Spectrum device, which supports Ethernet switching with 32X100G ports line rate of up to EDR speed. Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2018-02-08platform/x86: mlx-platform: Fix power cable setting for msn21xx familyVadim Pasternak1-2/+21
Add dedicated structure with power cable setting for Mellanox msn21xx family. These systems do not have a physical device for the power unit controller. When the power cable is inserted or removed, the relevant interrupt signal is handled, the status is updated, but no device is associated with the signal. Add definition for interrupt low aggregation signal. On system from msn21xx family, low aggregation mask should be removed in order to allow signal to hit CPU. Fixes: 6613d18e9038 ("platform/x86: mlx-platform: Move module from arch/x86") Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2018-02-08platform/x86: mlx-platform: Add define for the negative busVadim Pasternak1-0/+1
Add define for the negative bus ID in order to use it in case no hotplug device is associated with the hotplug interrupt signal. In this case, the signal will be handled by the mlxreg-hotplug driver, but no device will be associated with the signal. Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2018-02-08platform/x86: mlx-platform: Use defines for bus assignmentVadim Pasternak1-8/+15
Add defines for the bus IDs, used for hotplug device topology to improve code readability. Defines added for FAN and power units. Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2018-02-06platform/x86: mlx-platform: Fix an ERR_PTR vs NULL issueDan Carpenter1-2/+2
devm_ioport_map() returns NULL on error but we accidentally check for error pointers instead. Fixes: c6acad68eb2d ("platform/mellanox: mlxreg-hotplug: Modify to use a regmap interface") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Vadim Pasternak <vadimp@melanox.com> Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2018-01-31platform/x86: mlx-platform: Add hotplug device unregister to error pathVadim Pasternak1-1/+3
Add hotplug platform driver un-registration in case regmap cache synchronization failed. In such case hotplug platform driver registration should be rolled back. Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2018-01-31platform/x86: mlx-platform: fix module aliasesIvan Vecera1-5/+2
Missing prefix 'pn' in MODULE_ALIAS lines causes the module to not load automatically. The driver should use MODULE_DEVICE_TABLE together with existing mlxplat_dmi_table instead. Fixes: 6613d18e9038 ("platform/x86: mlx-platform: Move module from arch/x86") Cc: Vadim Pasternak <vadimp@mellanox.com> Cc: Bjørn Mork <bjorn@mork.no> Cc: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Ivan Vecera <ivecera@redhat.com> Acked-by: Vadim Pasternak <vadimp@mellanox.com> Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2018-01-31platform/x86: mlx-platform: Add IO access verification callbacksVadim Pasternak1-0/+77
Add definitions for hotplug device masks and events offsets, in order to specify explicitly all hardware registers allowed for IO operations for all the drivers sharing register map with mlx-platform. Extend register map configuration with the sets of writable, readable and volatile registers to allow verification prior to the access. It prevents unexpected access to hardware registers by the drivers, sharing register map with mlx-platform. Extend register map configuration with cache type field in order to have ability to cache hardware register value, where possible. Use simple flat array type for register lookups, which is most suitable in case when the number of the registers is not too large. Add at the end of probing routine calls to regcache_mark_dirty and regcache_sync in order to sync register cache with hardware values. The first routine indicate that hardware registers value required sync, the second performs sync. Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2018-01-31platform/x86: mlx-platform: Document pdev_hotplug fieldVadim Pasternak1-0/+1
Add missing description of pdev_hotplug in struct mlxplat_priv. Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2018-01-31platform/mellanox: mlxreg-hotplug: Modify to use a regmap interfaceVadim Pasternak1-49/+182
Restructure mlxreg header for unification of hotplug item definitions. Unify hotplug items to allow any kind of item (power controller, fan eeprom, psu eeprom, asic health) in common way. Use a hardware independent regmap interface, enabling the support of hotplug events over programmable devices attached to different bus types, such as I2C, LPC, or SPI. Add a device node to the mlxreg_core_data structure. Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com> [dvhart: spelling corrections, refactor device node introduction] Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2018-01-31platform/mellanox: Rename i2c bus to nrVadim Pasternak1-8/+8
Use Linux convention of nr instead of bus for i2c adapter number. Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com> [dvhart: refactored commit into smaller functional changes] Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2018-01-31platform/x86: Move Mellanox platform hotplug driver to platform/mellanoxVadim Pasternak1-9/+9
In preparation for making the hotplug driver build for different architectures, move mlxcpld-hotplug.c to platform/mellanox and the header to include/linux/platform_data as mlxreg.h to reflect the new interface changes to come. Replace references to CPLD with REG throughout the files, consistent with the new name. Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com> [dvhart: update copyright, rewrite commit message] Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2017-10-16platform/x86: mlx-platform: make a couple of structures staticColin Ian King1-2/+2
The structures mlxplat_dev and mlxplat_hotplug are local to the source and do not need to be in global scope, so make them static. Cleans up sparse warnings: symbol 'mlxplat_dev' was not declared. Should it be static? symbol 'mlxplat_hotplug' was not declared. Should it be static? Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2017-09-14dmi: Mark all struct dmi_system_id instances constChristoph Hellwig1-1/+1
... and __initconst if applicable. Based on similar work for an older kernel in the Grsecurity patch. [JD: fix toshiba-wmi build] [JD: add htcpen] [JD: move __initconst where checkscript wants it] Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jean Delvare <jdelvare@suse.de>
2017-02-03platform/x86: mlx-platform: mlxcpld-hotplug driver style fixesVadim Pasternak1-34/+50
The patch contains several styling fixes: - Make names of hotplug devices shorter; - Change register offset assignment to defines; - Add defines for the all event masks; - Use PLATFORM_DEVID_NONE instead of -1; Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2017-01-21platform/x86: mlx-platform: free first dev on errorDan Carpenter1-1/+1
There is an off-by-one error so we don't unregister priv->pdev_mux[0]. Also it's slightly simpler as a while loop instead of a for loop. Fixes: 58cbbee2391c ("x86/platform/mellanox: Introduce support for Mellanox systems platform") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Vadim Pasternak <vadimp@mellanox.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2016-12-16platform/x86: mlx-platform: Add mlxcpld-hotplug driver registrationVadim Pasternak1-1/+97
Add calls for mlxcpld-hotplug platform driver registration/unregistration and add platform hotplug data configurations. This driver, when registered within system will handle system hot-plug events for the power suppliers, power cables and fans (insertion and removing). These events are controlled through CPLD Lattice device. Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2016-12-16platform/x86: mlx-platform: Fix semicolon.cocci warningskbuild test robot1-1/+1
drivers/platform/x86/mlx-platform.c:219:2-3: Unneeded semicolon Remove unneeded semicolon. Generated by: scripts/coccinelle/misc/semicolon.cocci CC: Vadim Pasternak <vadimp@mellanox.com> Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Acked-by: Vadim Pasternak <vadimp@mellanox.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2016-12-16platform/x86: mlx-platform: Move module from arch/x86Vadim Pasternak1-0/+265
Since mlx-platform is not an architectural driver, it is moved out of arch/x86/platform to drivers/platform/x86. Relevant Makefile and Kconfig are updated. Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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