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x86/platform/mellanox: Introduce support for Mellanox systems platform
Enable system support for the Mellanox Technologies platform, which provides support for the next Mellanox basic systems: "msx6710", "msx6720", "msb7700", "msn2700", "msx1410", "msn2410", "msb7800", "msn2740", "msn2100" and also various number of derivative systems from the above basic types. The Kconfig controlling compilation of this code is: MLX_PLATFORM Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> Cc: jiri@resnulli.us Cc: gregkh@linuxfoundation.org Cc: platform-driver-x86@vger.kernel.org Cc: geert@linux-m68k.org Cc: linux@roeck-us.net Cc: akpm@linux-foundation.org Cc: mchehab@kernel.org Cc: davem@davemloft.net Cc: kvalo@codeaurora.org Link: http://lkml.kernel.org/r/1474578822-33805-1-git-send-email-vadimp@mellanox.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Vadim Pasternak
Thomas Gleixner
parent
4f059d514f
commit
58cbbee239
@ -7668,6 +7668,12 @@ W: http://www.mellanox.com
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Q: http://patchwork.ozlabs.org/project/netdev/list/
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F: drivers/net/ethernet/mellanox/mlxsw/
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MELLANOX PLATFORM DRIVER
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M: Vadim Pasternak <vadimp@mellanox.com>
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L: platform-driver-x86@vger.kernel.org
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S: Supported
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F: arch/x86/platform/mellanox/mlx-platform.c
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SOFT-ROCE DRIVER (rxe)
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M: Moni Shoua <monis@mellanox.com>
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L: linux-rdma@vger.kernel.org
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@ -549,6 +549,18 @@ config X86_INTEL_QUARK
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Say Y here if you have a Quark based system such as the Arduino
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compatible Intel Galileo.
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config MLX_PLATFORM
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tristate "Mellanox Technologies platform support"
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depends on X86_64
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depends on X86_EXTENDED_PLATFORM
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---help---
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This option enables system support for the Mellanox Technologies
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platform.
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Say Y here if you are building a kernel for Mellanox system.
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Otherwise, say N.
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config X86_INTEL_LPSS
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bool "Intel Low Power Subsystem Support"
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depends on X86 && ACPI
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@ -8,6 +8,7 @@ obj-y += iris/
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obj-y += intel/
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obj-y += intel-mid/
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obj-y += intel-quark/
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obj-y += mellanox/
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obj-y += olpc/
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obj-y += scx200/
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obj-y += sfi/
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1
arch/x86/platform/mellanox/Makefile
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1
arch/x86/platform/mellanox/Makefile
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@ -0,0 +1 @@
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obj-$(CONFIG_MLX_PLATFORM) += mlx-platform.o
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266
arch/x86/platform/mellanox/mlx-platform.c
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266
arch/x86/platform/mellanox/mlx-platform.c
Normal file
@ -0,0 +1,266 @@
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/*
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* arch/x86/platform/mellanox/mlx-platform.c
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* Copyright (c) 2016 Mellanox Technologies. All rights reserved.
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* Copyright (c) 2016 Vadim Pasternak <vadimp@mellanox.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the names of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <linux/device.h>
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#include <linux/dmi.h>
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#include <linux/i2c.h>
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#include <linux/i2c-mux.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/platform_data/i2c-mux-reg.h>
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#define MLX_PLAT_DEVICE_NAME "mlxplat"
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/* LPC bus IO offsets */
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#define MLXPLAT_CPLD_LPC_I2C_BASE_ADRR 0x2000
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#define MLXPLAT_CPLD_LPC_REG_BASE_ADRR 0x2500
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#define MLXPLAT_CPLD_LPC_IO_RANGE 0x100
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#define MLXPLAT_CPLD_LPC_I2C_CH1_OFF 0xdb
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#define MLXPLAT_CPLD_LPC_I2C_CH2_OFF 0xda
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#define MLXPLAT_CPLD_LPC_PIO_OFFSET 0x10000UL
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#define MLXPLAT_CPLD_LPC_REG1 ((MLXPLAT_CPLD_LPC_REG_BASE_ADRR + \
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MLXPLAT_CPLD_LPC_I2C_CH1_OFF) | \
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MLXPLAT_CPLD_LPC_PIO_OFFSET)
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#define MLXPLAT_CPLD_LPC_REG2 ((MLXPLAT_CPLD_LPC_REG_BASE_ADRR + \
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MLXPLAT_CPLD_LPC_I2C_CH2_OFF) | \
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MLXPLAT_CPLD_LPC_PIO_OFFSET)
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/* Start channel numbers */
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#define MLXPLAT_CPLD_CH1 2
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#define MLXPLAT_CPLD_CH2 10
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/* Number of LPC attached MUX platform devices */
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#define MLXPLAT_CPLD_LPC_MUX_DEVS 2
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/* mlxplat_priv - platform private data
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* @pdev_i2c - i2c controller platform device
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* @pdev_mux - array of mux platform devices
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*/
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struct mlxplat_priv {
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struct platform_device *pdev_i2c;
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struct platform_device *pdev_mux[MLXPLAT_CPLD_LPC_MUX_DEVS];
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};
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/* Regions for LPC I2C controller and LPC base register space */
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static const struct resource mlxplat_lpc_resources[] = {
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[0] = DEFINE_RES_NAMED(MLXPLAT_CPLD_LPC_I2C_BASE_ADRR,
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MLXPLAT_CPLD_LPC_IO_RANGE,
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"mlxplat_cpld_lpc_i2c_ctrl", IORESOURCE_IO),
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[1] = DEFINE_RES_NAMED(MLXPLAT_CPLD_LPC_REG_BASE_ADRR,
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MLXPLAT_CPLD_LPC_IO_RANGE,
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"mlxplat_cpld_lpc_regs",
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IORESOURCE_IO),
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};
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/* Platform default channels */
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static const int mlxplat_default_channels[][8] = {
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{
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MLXPLAT_CPLD_CH1, MLXPLAT_CPLD_CH1 + 1, MLXPLAT_CPLD_CH1 + 2,
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MLXPLAT_CPLD_CH1 + 3, MLXPLAT_CPLD_CH1 + 4, MLXPLAT_CPLD_CH1 +
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5, MLXPLAT_CPLD_CH1 + 6, MLXPLAT_CPLD_CH1 + 7
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},
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{
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MLXPLAT_CPLD_CH2, MLXPLAT_CPLD_CH2 + 1, MLXPLAT_CPLD_CH2 + 2,
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MLXPLAT_CPLD_CH2 + 3, MLXPLAT_CPLD_CH2 + 4, MLXPLAT_CPLD_CH2 +
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5, MLXPLAT_CPLD_CH2 + 6, MLXPLAT_CPLD_CH2 + 7
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},
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};
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/* Platform channels for MSN21xx system family */
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static const int mlxplat_msn21xx_channels[] = { 1, 2, 3, 4, 5, 6, 7, 8 };
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/* Platform mux data */
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static struct i2c_mux_reg_platform_data mlxplat_mux_data[] = {
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{
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.parent = 1,
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.base_nr = MLXPLAT_CPLD_CH1,
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.write_only = 1,
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.reg = (void __iomem *)MLXPLAT_CPLD_LPC_REG1,
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.reg_size = 1,
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.idle_in_use = 1,
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},
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{
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.parent = 1,
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.base_nr = MLXPLAT_CPLD_CH2,
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.write_only = 1,
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.reg = (void __iomem *)MLXPLAT_CPLD_LPC_REG2,
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.reg_size = 1,
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.idle_in_use = 1,
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},
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};
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static struct platform_device *mlxplat_dev;
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static int __init mlxplat_dmi_default_matched(const struct dmi_system_id *dmi)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(mlxplat_mux_data); i++) {
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mlxplat_mux_data[i].values = mlxplat_default_channels[i];
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mlxplat_mux_data[i].n_values =
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ARRAY_SIZE(mlxplat_default_channels[i]);
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}
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return 1;
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};
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static int __init mlxplat_dmi_msn21xx_matched(const struct dmi_system_id *dmi)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(mlxplat_mux_data); i++) {
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mlxplat_mux_data[i].values = mlxplat_msn21xx_channels;
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mlxplat_mux_data[i].n_values =
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ARRAY_SIZE(mlxplat_msn21xx_channels);
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}
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return 1;
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};
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static struct dmi_system_id mlxplat_dmi_table[] __initdata = {
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{
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.callback = mlxplat_dmi_default_matched,
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.matches = {
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DMI_MATCH(DMI_BOARD_VENDOR, "Mellanox Technologies"),
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DMI_MATCH(DMI_PRODUCT_NAME, "MSN24"),
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},
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},
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{
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.callback = mlxplat_dmi_default_matched,
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.matches = {
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DMI_MATCH(DMI_BOARD_VENDOR, "Mellanox Technologies"),
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DMI_MATCH(DMI_PRODUCT_NAME, "MSN27"),
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},
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},
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{
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.callback = mlxplat_dmi_default_matched,
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.matches = {
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DMI_MATCH(DMI_BOARD_VENDOR, "Mellanox Technologies"),
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DMI_MATCH(DMI_PRODUCT_NAME, "MSB"),
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},
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},
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{
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.callback = mlxplat_dmi_default_matched,
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.matches = {
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DMI_MATCH(DMI_BOARD_VENDOR, "Mellanox Technologies"),
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DMI_MATCH(DMI_PRODUCT_NAME, "MSX"),
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},
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},
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{
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.callback = mlxplat_dmi_msn21xx_matched,
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.matches = {
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DMI_MATCH(DMI_BOARD_VENDOR, "Mellanox Technologies"),
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DMI_MATCH(DMI_PRODUCT_NAME, "MSN21"),
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},
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},
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{ }
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};
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static int __init mlxplat_init(void)
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{
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struct mlxplat_priv *priv;
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int i, err;
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if (!dmi_check_system(mlxplat_dmi_table))
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return -ENODEV;
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mlxplat_dev = platform_device_register_simple(MLX_PLAT_DEVICE_NAME, -1,
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mlxplat_lpc_resources,
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ARRAY_SIZE(mlxplat_lpc_resources));
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if (!mlxplat_dev)
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return -ENOMEM;
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priv = devm_kzalloc(&mlxplat_dev->dev, sizeof(struct mlxplat_priv),
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GFP_KERNEL);
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if (!priv) {
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err = -ENOMEM;
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goto fail_alloc;
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}
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platform_set_drvdata(mlxplat_dev, priv);
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priv->pdev_i2c = platform_device_register_simple("i2c_mlxcpld", -1,
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NULL, 0);
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if (IS_ERR(priv->pdev_i2c)) {
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err = PTR_ERR(priv->pdev_i2c);
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goto fail_alloc;
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};
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for (i = 0; i < ARRAY_SIZE(mlxplat_mux_data); i++) {
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priv->pdev_mux[i] = platform_device_register_resndata(
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&mlxplat_dev->dev,
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"i2c-mux-reg", i, NULL,
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0, &mlxplat_mux_data[i],
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sizeof(mlxplat_mux_data[i]));
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if (IS_ERR(priv->pdev_mux[i])) {
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err = PTR_ERR(priv->pdev_mux[i]);
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goto fail_platform_mux_register;
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}
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}
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return 0;
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fail_platform_mux_register:
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for (i--; i > 0 ; i--)
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platform_device_unregister(priv->pdev_mux[i]);
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platform_device_unregister(priv->pdev_i2c);
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fail_alloc:
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platform_device_unregister(mlxplat_dev);
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return err;
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}
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module_init(mlxplat_init);
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static void __exit mlxplat_exit(void)
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{
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struct mlxplat_priv *priv = platform_get_drvdata(mlxplat_dev);
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int i;
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for (i = ARRAY_SIZE(mlxplat_mux_data) - 1; i >= 0 ; i--)
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platform_device_unregister(priv->pdev_mux[i]);
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platform_device_unregister(priv->pdev_i2c);
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platform_device_unregister(mlxplat_dev);
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}
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module_exit(mlxplat_exit);
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MODULE_AUTHOR("Vadim Pasternak (vadimp@mellanox.com)");
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MODULE_DESCRIPTION("Mellanox platform driver");
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MODULE_LICENSE("Dual BSD/GPL");
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MODULE_ALIAS("dmi:*:*Mellanox*:MSN24*:");
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MODULE_ALIAS("dmi:*:*Mellanox*:MSN27*:");
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MODULE_ALIAS("dmi:*:*Mellanox*:MSB*:");
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MODULE_ALIAS("dmi:*:*Mellanox*:MSX*:");
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MODULE_ALIAS("dmi:*:*Mellanox*:MSN21*:");
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