Commit 58cbbee2 authored by Vadim Pasternak's avatar Vadim Pasternak Committed by Thomas Gleixner

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: default avatarVadim 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.comSigned-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 4f059d51
...@@ -7668,6 +7668,12 @@ W: http://www.mellanox.com ...@@ -7668,6 +7668,12 @@ W: http://www.mellanox.com
Q: http://patchwork.ozlabs.org/project/netdev/list/ Q: http://patchwork.ozlabs.org/project/netdev/list/
F: drivers/net/ethernet/mellanox/mlxsw/ F: drivers/net/ethernet/mellanox/mlxsw/
MELLANOX PLATFORM DRIVER
M: Vadim Pasternak <vadimp@mellanox.com>
L: platform-driver-x86@vger.kernel.org
S: Supported
F: arch/x86/platform/mellanox/mlx-platform.c
SOFT-ROCE DRIVER (rxe) SOFT-ROCE DRIVER (rxe)
M: Moni Shoua <monis@mellanox.com> M: Moni Shoua <monis@mellanox.com>
L: linux-rdma@vger.kernel.org L: linux-rdma@vger.kernel.org
......
...@@ -549,6 +549,18 @@ config X86_INTEL_QUARK ...@@ -549,6 +549,18 @@ config X86_INTEL_QUARK
Say Y here if you have a Quark based system such as the Arduino Say Y here if you have a Quark based system such as the Arduino
compatible Intel Galileo. compatible Intel Galileo.
config MLX_PLATFORM
tristate "Mellanox Technologies platform support"
depends on X86_64
depends on X86_EXTENDED_PLATFORM
---help---
This option enables system support for the Mellanox Technologies
platform.
Say Y here if you are building a kernel for Mellanox system.
Otherwise, say N.
config X86_INTEL_LPSS config X86_INTEL_LPSS
bool "Intel Low Power Subsystem Support" bool "Intel Low Power Subsystem Support"
depends on X86 && ACPI depends on X86 && ACPI
......
...@@ -8,6 +8,7 @@ obj-y += iris/ ...@@ -8,6 +8,7 @@ obj-y += iris/
obj-y += intel/ obj-y += intel/
obj-y += intel-mid/ obj-y += intel-mid/
obj-y += intel-quark/ obj-y += intel-quark/
obj-y += mellanox/
obj-y += olpc/ obj-y += olpc/
obj-y += scx200/ obj-y += scx200/
obj-y += sfi/ obj-y += sfi/
......
obj-$(CONFIG_MLX_PLATFORM) += mlx-platform.o
/*
* arch/x86/platform/mellanox/mlx-platform.c
* Copyright (c) 2016 Mellanox Technologies. All rights reserved.
* Copyright (c) 2016 Vadim Pasternak <vadimp@mellanox.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the names of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <linux/device.h>
#include <linux/dmi.h>
#include <linux/i2c.h>
#include <linux/i2c-mux.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/platform_data/i2c-mux-reg.h>
#define MLX_PLAT_DEVICE_NAME "mlxplat"
/* LPC bus IO offsets */
#define MLXPLAT_CPLD_LPC_I2C_BASE_ADRR 0x2000
#define MLXPLAT_CPLD_LPC_REG_BASE_ADRR 0x2500
#define MLXPLAT_CPLD_LPC_IO_RANGE 0x100
#define MLXPLAT_CPLD_LPC_I2C_CH1_OFF 0xdb
#define MLXPLAT_CPLD_LPC_I2C_CH2_OFF 0xda
#define MLXPLAT_CPLD_LPC_PIO_OFFSET 0x10000UL
#define MLXPLAT_CPLD_LPC_REG1 ((MLXPLAT_CPLD_LPC_REG_BASE_ADRR + \
MLXPLAT_CPLD_LPC_I2C_CH1_OFF) | \
MLXPLAT_CPLD_LPC_PIO_OFFSET)
#define MLXPLAT_CPLD_LPC_REG2 ((MLXPLAT_CPLD_LPC_REG_BASE_ADRR + \
MLXPLAT_CPLD_LPC_I2C_CH2_OFF) | \
MLXPLAT_CPLD_LPC_PIO_OFFSET)
/* Start channel numbers */
#define MLXPLAT_CPLD_CH1 2
#define MLXPLAT_CPLD_CH2 10
/* Number of LPC attached MUX platform devices */
#define MLXPLAT_CPLD_LPC_MUX_DEVS 2
/* mlxplat_priv - platform private data
* @pdev_i2c - i2c controller platform device
* @pdev_mux - array of mux platform devices
*/
struct mlxplat_priv {
struct platform_device *pdev_i2c;
struct platform_device *pdev_mux[MLXPLAT_CPLD_LPC_MUX_DEVS];
};
/* Regions for LPC I2C controller and LPC base register space */
static const struct resource mlxplat_lpc_resources[] = {
[0] = DEFINE_RES_NAMED(MLXPLAT_CPLD_LPC_I2C_BASE_ADRR,
MLXPLAT_CPLD_LPC_IO_RANGE,
"mlxplat_cpld_lpc_i2c_ctrl", IORESOURCE_IO),
[1] = DEFINE_RES_NAMED(MLXPLAT_CPLD_LPC_REG_BASE_ADRR,
MLXPLAT_CPLD_LPC_IO_RANGE,
"mlxplat_cpld_lpc_regs",
IORESOURCE_IO),
};
/* Platform default channels */
static const int mlxplat_default_channels[][8] = {
{
MLXPLAT_CPLD_CH1, MLXPLAT_CPLD_CH1 + 1, MLXPLAT_CPLD_CH1 + 2,
MLXPLAT_CPLD_CH1 + 3, MLXPLAT_CPLD_CH1 + 4, MLXPLAT_CPLD_CH1 +
5, MLXPLAT_CPLD_CH1 + 6, MLXPLAT_CPLD_CH1 + 7
},
{
MLXPLAT_CPLD_CH2, MLXPLAT_CPLD_CH2 + 1, MLXPLAT_CPLD_CH2 + 2,
MLXPLAT_CPLD_CH2 + 3, MLXPLAT_CPLD_CH2 + 4, MLXPLAT_CPLD_CH2 +
5, MLXPLAT_CPLD_CH2 + 6, MLXPLAT_CPLD_CH2 + 7
},
};
/* Platform channels for MSN21xx system family */
static const int mlxplat_msn21xx_channels[] = { 1, 2, 3, 4, 5, 6, 7, 8 };
/* Platform mux data */
static struct i2c_mux_reg_platform_data mlxplat_mux_data[] = {
{
.parent = 1,
.base_nr = MLXPLAT_CPLD_CH1,
.write_only = 1,
.reg = (void __iomem *)MLXPLAT_CPLD_LPC_REG1,
.reg_size = 1,
.idle_in_use = 1,
},
{
.parent = 1,
.base_nr = MLXPLAT_CPLD_CH2,
.write_only = 1,
.reg = (void __iomem *)MLXPLAT_CPLD_LPC_REG2,
.reg_size = 1,
.idle_in_use = 1,
},
};
static struct platform_device *mlxplat_dev;
static int __init mlxplat_dmi_default_matched(const struct dmi_system_id *dmi)
{
int i;
for (i = 0; i < ARRAY_SIZE(mlxplat_mux_data); i++) {
mlxplat_mux_data[i].values = mlxplat_default_channels[i];
mlxplat_mux_data[i].n_values =
ARRAY_SIZE(mlxplat_default_channels[i]);
}
return 1;
};
static int __init mlxplat_dmi_msn21xx_matched(const struct dmi_system_id *dmi)
{
int i;
for (i = 0; i < ARRAY_SIZE(mlxplat_mux_data); i++) {
mlxplat_mux_data[i].values = mlxplat_msn21xx_channels;
mlxplat_mux_data[i].n_values =
ARRAY_SIZE(mlxplat_msn21xx_channels);
}
return 1;
};
static struct dmi_system_id mlxplat_dmi_table[] __initdata = {
{
.callback = mlxplat_dmi_default_matched,
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Mellanox Technologies"),
DMI_MATCH(DMI_PRODUCT_NAME, "MSN24"),
},
},
{
.callback = mlxplat_dmi_default_matched,
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Mellanox Technologies"),
DMI_MATCH(DMI_PRODUCT_NAME, "MSN27"),
},
},
{
.callback = mlxplat_dmi_default_matched,
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Mellanox Technologies"),
DMI_MATCH(DMI_PRODUCT_NAME, "MSB"),
},
},
{
.callback = mlxplat_dmi_default_matched,
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Mellanox Technologies"),
DMI_MATCH(DMI_PRODUCT_NAME, "MSX"),
},
},
{
.callback = mlxplat_dmi_msn21xx_matched,
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Mellanox Technologies"),
DMI_MATCH(DMI_PRODUCT_NAME, "MSN21"),
},
},
{ }
};
static int __init mlxplat_init(void)
{
struct mlxplat_priv *priv;
int i, err;
if (!dmi_check_system(mlxplat_dmi_table))
return -ENODEV;
mlxplat_dev = platform_device_register_simple(MLX_PLAT_DEVICE_NAME, -1,
mlxplat_lpc_resources,
ARRAY_SIZE(mlxplat_lpc_resources));
if (!mlxplat_dev)
return -ENOMEM;
priv = devm_kzalloc(&mlxplat_dev->dev, sizeof(struct mlxplat_priv),
GFP_KERNEL);
if (!priv) {
err = -ENOMEM;
goto fail_alloc;
}
platform_set_drvdata(mlxplat_dev, priv);
priv->pdev_i2c = platform_device_register_simple("i2c_mlxcpld", -1,
NULL, 0);
if (IS_ERR(priv->pdev_i2c)) {
err = PTR_ERR(priv->pdev_i2c);
goto fail_alloc;
};
for (i = 0; i < ARRAY_SIZE(mlxplat_mux_data); i++) {
priv->pdev_mux[i] = platform_device_register_resndata(
&mlxplat_dev->dev,
"i2c-mux-reg", i, NULL,
0, &mlxplat_mux_data[i],
sizeof(mlxplat_mux_data[i]));
if (IS_ERR(priv->pdev_mux[i])) {
err = PTR_ERR(priv->pdev_mux[i]);
goto fail_platform_mux_register;
}
}
return 0;
fail_platform_mux_register:
for (i--; i > 0 ; i--)
platform_device_unregister(priv->pdev_mux[i]);
platform_device_unregister(priv->pdev_i2c);
fail_alloc:
platform_device_unregister(mlxplat_dev);
return err;
}
module_init(mlxplat_init);
static void __exit mlxplat_exit(void)
{
struct mlxplat_priv *priv = platform_get_drvdata(mlxplat_dev);
int i;
for (i = ARRAY_SIZE(mlxplat_mux_data) - 1; i >= 0 ; i--)
platform_device_unregister(priv->pdev_mux[i]);
platform_device_unregister(priv->pdev_i2c);
platform_device_unregister(mlxplat_dev);
}
module_exit(mlxplat_exit);
MODULE_AUTHOR("Vadim Pasternak (vadimp@mellanox.com)");
MODULE_DESCRIPTION("Mellanox platform driver");
MODULE_LICENSE("Dual BSD/GPL");
MODULE_ALIAS("dmi:*:*Mellanox*:MSN24*:");
MODULE_ALIAS("dmi:*:*Mellanox*:MSN27*:");
MODULE_ALIAS("dmi:*:*Mellanox*:MSB*:");
MODULE_ALIAS("dmi:*:*Mellanox*:MSX*:");
MODULE_ALIAS("dmi:*:*Mellanox*:MSN21*:");
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