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linux-stable/arch/arm/mach-orion5x/dns323-setup.c
David S. Miller 13a55372b6 ARM: orion5x: Revert commit 4904dbda41. 
It is not valid for orion5x to use mac_pton().

First of all, the orion5x buffer is not NULL terminated.  mac_pton()
has no business operating on non-NULL terminated buffers because
only the caller can know that this is valid and in what manner it
is ok to parse this NULL'less buffer.

Second of all, orion5x operates on an __iomem pointer, which cannot
be dereferenced using normal C pointer operations.  Accesses to
such areas much be performed with the proper iomem accessors.

Fixes: 4904dbda41 ("ARM: orion5x: use mac_pton() helper")
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-02-26 13:41:47 -05:00

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/*
* arch/arm/mach-orion5x/dns323-setup.c
*
* Copyright (C) 2007 Herbert Valerio Riedel <hvr@gnu.org>
*
* Support for HW Rev C1:
*
* Copyright (C) 2010 Benjamin Herrenschmidt <benh@kernel.crashing.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
*/
#include <linux/gpio.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/pci.h>
#include <linux/irq.h>
#include <linux/mtd/physmap.h>
#include <linux/mv643xx_eth.h>
#include <linux/leds.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>
#include <linux/i2c.h>
#include <linux/ata_platform.h>
#include <linux/phy.h>
#include <linux/marvell_phy.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/pci.h>
#include <asm/system_info.h>
#include <plat/orion-gpio.h>
#include "orion5x.h"
#include "common.h"
#include "mpp.h"
/* Rev A1 and B1 */
#define DNS323_GPIO_LED_RIGHT_AMBER 1
#define DNS323_GPIO_LED_LEFT_AMBER 2
#define DNS323_GPIO_SYSTEM_UP 3
#define DNS323_GPIO_LED_POWER1 4
#define DNS323_GPIO_LED_POWER2 5
#define DNS323_GPIO_OVERTEMP 6
#define DNS323_GPIO_RTC 7
#define DNS323_GPIO_POWER_OFF 8
#define DNS323_GPIO_KEY_POWER 9
#define DNS323_GPIO_KEY_RESET 10
/* Rev C1 */
#define DNS323C_GPIO_KEY_POWER 1
#define DNS323C_GPIO_POWER_OFF 2
#define DNS323C_GPIO_LED_RIGHT_AMBER 8
#define DNS323C_GPIO_LED_LEFT_AMBER 9
#define DNS323C_GPIO_LED_POWER 17
#define DNS323C_GPIO_FAN_BIT1 18
#define DNS323C_GPIO_FAN_BIT0 19
/* Exposed to userspace, do not change */
enum {
DNS323_REV_A1, /* 0 */
DNS323_REV_B1, /* 1 */
DNS323_REV_C1, /* 2 */
};
/****************************************************************************
* PCI setup
*/
static int __init dns323_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
{
int irq;
/*
* Check for devices with hard-wired IRQs.
*/
irq = orion5x_pci_map_irq(dev, slot, pin);
if (irq != -1)
return irq;
return -1;
}
static struct hw_pci dns323_pci __initdata = {
.nr_controllers = 2,
.setup = orion5x_pci_sys_setup,
.scan = orion5x_pci_sys_scan_bus,
.map_irq = dns323_pci_map_irq,
};
static int __init dns323_pci_init(void)
{
/* Rev B1 and C1 doesn't really use its PCI bus, and initialising PCI
* gets in the way of initialising the SATA controller.
*/
if (machine_is_dns323() && system_rev == DNS323_REV_A1)
pci_common_init(&dns323_pci);
return 0;
}
subsys_initcall(dns323_pci_init);
/****************************************************************************
* 8MiB NOR flash (Spansion S29GL064M90TFIR4)
*
* Layout as used by D-Link:
* 0x00000000-0x00010000 : "MTD1"
* 0x00010000-0x00020000 : "MTD2"
* 0x00020000-0x001a0000 : "Linux Kernel"
* 0x001a0000-0x007d0000 : "File System"
* 0x007d0000-0x00800000 : "u-boot"
*/
#define DNS323_NOR_BOOT_BASE 0xf4000000
#define DNS323_NOR_BOOT_SIZE SZ_8M
static struct mtd_partition dns323_partitions[] = {
{
.name = "MTD1",
.size = 0x00010000,
.offset = 0,
}, {
.name = "MTD2",
.size = 0x00010000,
.offset = 0x00010000,
}, {
.name = "Linux Kernel",
.size = 0x00180000,
.offset = 0x00020000,
}, {
.name = "File System",
.size = 0x00630000,
.offset = 0x001A0000,
}, {
.name = "u-boot",
.size = 0x00030000,
.offset = 0x007d0000,
},
};
static struct physmap_flash_data dns323_nor_flash_data = {
.width = 1,
.parts = dns323_partitions,
.nr_parts = ARRAY_SIZE(dns323_partitions)
};
static struct resource dns323_nor_flash_resource = {
.flags = IORESOURCE_MEM,
.start = DNS323_NOR_BOOT_BASE,
.end = DNS323_NOR_BOOT_BASE + DNS323_NOR_BOOT_SIZE - 1,
};
static struct platform_device dns323_nor_flash = {
.name = "physmap-flash",
.id = 0,
.dev = {
.platform_data = &dns323_nor_flash_data,
},
.resource = &dns323_nor_flash_resource,
.num_resources = 1,
};
/****************************************************************************
* Ethernet
*/
static struct mv643xx_eth_platform_data dns323_eth_data = {
.phy_addr = MV643XX_ETH_PHY_ADDR(8),
};
/* dns323_parse_hex_*() taken from tsx09-common.c; should a common copy of these
* functions be kept somewhere?
*/
static int __init dns323_parse_hex_nibble(char n)
{
if (n >= '0' && n <= '9')
return n - '0';
if (n >= 'A' && n <= 'F')
return n - 'A' + 10;
if (n >= 'a' && n <= 'f')
return n - 'a' + 10;
return -1;
}
static int __init dns323_parse_hex_byte(const char *b)
{
int hi;
int lo;
hi = dns323_parse_hex_nibble(b[0]);
lo = dns323_parse_hex_nibble(b[1]);
if (hi < 0 || lo < 0)
return -1;
return (hi << 4) | lo;
}
static int __init dns323_read_mac_addr(void)
{
u_int8_t addr[6];
int i;
char *mac_page;
/* MAC address is stored as a regular ol' string in /dev/mtdblock4
* (0x007d0000-0x00800000) starting at offset 196480 (0x2ff80).
*/
mac_page = ioremap(DNS323_NOR_BOOT_BASE + 0x7d0000 + 196480, 1024);
if (!mac_page)
return -ENOMEM;
/* Sanity check the string we're looking at */
for (i = 0; i < 5; i++) {
if (*(mac_page + (i * 3) + 2) != ':') {
goto error_fail;
}
}
for (i = 0; i < 6; i++) {
int byte;
byte = dns323_parse_hex_byte(mac_page + (i * 3));
if (byte < 0) {
goto error_fail;
}
addr[i] = byte;
}
iounmap(mac_page);
printk("DNS-323: Found ethernet MAC address: %pM\n", addr);
memcpy(dns323_eth_data.mac_addr, addr, 6);
return 0;
error_fail:
iounmap(mac_page);
return -EINVAL;
}
/****************************************************************************
* GPIO LEDs (simple - doesn't use hardware blinking support)
*/
static struct gpio_led dns323ab_leds[] = {
{
.name = "power:blue",
.gpio = DNS323_GPIO_LED_POWER2,
.default_trigger = "default-on",
}, {
.name = "right:amber",
.gpio = DNS323_GPIO_LED_RIGHT_AMBER,
.active_low = 1,
}, {
.name = "left:amber",
.gpio = DNS323_GPIO_LED_LEFT_AMBER,
.active_low = 1,
},
};
static struct gpio_led dns323c_leds[] = {
{
.name = "power:blue",
.gpio = DNS323C_GPIO_LED_POWER,
.default_trigger = "timer",
.active_low = 1,
}, {
.name = "right:amber",
.gpio = DNS323C_GPIO_LED_RIGHT_AMBER,
.active_low = 1,
}, {
.name = "left:amber",
.gpio = DNS323C_GPIO_LED_LEFT_AMBER,
.active_low = 1,
},
};
static struct gpio_led_platform_data dns323ab_led_data = {
.num_leds = ARRAY_SIZE(dns323ab_leds),
.leds = dns323ab_leds,
.gpio_blink_set = orion_gpio_led_blink_set,
};
static struct gpio_led_platform_data dns323c_led_data = {
.num_leds = ARRAY_SIZE(dns323c_leds),
.leds = dns323c_leds,
.gpio_blink_set = orion_gpio_led_blink_set,
};
static struct platform_device dns323_gpio_leds = {
.name = "leds-gpio",
.id = -1,
.dev = {
.platform_data = &dns323ab_led_data,
},
};
/****************************************************************************
* GPIO Attached Keys
*/
static struct gpio_keys_button dns323ab_buttons[] = {
{
.code = KEY_RESTART,
.gpio = DNS323_GPIO_KEY_RESET,
.desc = "Reset Button",
.active_low = 1,
}, {
.code = KEY_POWER,
.gpio = DNS323_GPIO_KEY_POWER,
.desc = "Power Button",
.active_low = 1,
},
};
static struct gpio_keys_platform_data dns323ab_button_data = {
.buttons = dns323ab_buttons,
.nbuttons = ARRAY_SIZE(dns323ab_buttons),
};
static struct gpio_keys_button dns323c_buttons[] = {
{
.code = KEY_POWER,
.gpio = DNS323C_GPIO_KEY_POWER,
.desc = "Power Button",
.active_low = 1,
},
};
static struct gpio_keys_platform_data dns323c_button_data = {
.buttons = dns323c_buttons,
.nbuttons = ARRAY_SIZE(dns323c_buttons),
};
static struct platform_device dns323_button_device = {
.name = "gpio-keys",
.id = -1,
.num_resources = 0,
.dev = {
.platform_data = &dns323ab_button_data,
},
};
/*****************************************************************************
* SATA
*/
static struct mv_sata_platform_data dns323_sata_data = {
.n_ports = 2,
};
/****************************************************************************
* General Setup
*/
static unsigned int dns323a_mpp_modes[] __initdata = {
MPP0_PCIE_RST_OUTn,
MPP1_GPIO, /* right amber LED (sata ch0) */
MPP2_GPIO, /* left amber LED (sata ch1) */
MPP3_UNUSED,
MPP4_GPIO, /* power button LED */
MPP5_GPIO, /* power button LED */
MPP6_GPIO, /* GMT G751-2f overtemp */
MPP7_GPIO, /* M41T80 nIRQ/OUT/SQW */
MPP8_GPIO, /* triggers power off */
MPP9_GPIO, /* power button switch */
MPP10_GPIO, /* reset button switch */
MPP11_UNUSED,
MPP12_UNUSED,
MPP13_UNUSED,
MPP14_UNUSED,
MPP15_UNUSED,
MPP16_UNUSED,
MPP17_UNUSED,
MPP18_UNUSED,
MPP19_UNUSED,
0,
};
static unsigned int dns323b_mpp_modes[] __initdata = {
MPP0_UNUSED,
MPP1_GPIO, /* right amber LED (sata ch0) */
MPP2_GPIO, /* left amber LED (sata ch1) */
MPP3_GPIO, /* system up flag */
MPP4_GPIO, /* power button LED */
MPP5_GPIO, /* power button LED */
MPP6_GPIO, /* GMT G751-2f overtemp */
MPP7_GPIO, /* M41T80 nIRQ/OUT/SQW */
MPP8_GPIO, /* triggers power off */
MPP9_GPIO, /* power button switch */
MPP10_GPIO, /* reset button switch */
MPP11_UNUSED,
MPP12_SATA_LED,
MPP13_SATA_LED,
MPP14_SATA_LED,
MPP15_SATA_LED,
MPP16_UNUSED,
MPP17_UNUSED,
MPP18_UNUSED,
MPP19_UNUSED,
0,
};
static unsigned int dns323c_mpp_modes[] __initdata = {
MPP0_GPIO, /* ? input */
MPP1_GPIO, /* input power switch (0 = pressed) */
MPP2_GPIO, /* output power off */
MPP3_UNUSED, /* ? output */
MPP4_UNUSED, /* ? output */
MPP5_UNUSED, /* ? output */
MPP6_UNUSED, /* ? output */
MPP7_UNUSED, /* ? output */
MPP8_GPIO, /* i/o right amber LED */
MPP9_GPIO, /* i/o left amber LED */
MPP10_GPIO, /* input */
MPP11_UNUSED,
MPP12_SATA_LED,
MPP13_SATA_LED,
MPP14_SATA_LED,
MPP15_SATA_LED,
MPP16_UNUSED,
MPP17_GPIO, /* power button LED */
MPP18_GPIO, /* fan speed bit 0 */
MPP19_GPIO, /* fan speed bit 1 */
0,
};
/* Rev C1 Fan speed notes:
*
* The fan is controlled by 2 GPIOs on this board. The settings
* of the bits is as follow:
*
* GPIO 18 GPIO 19 Fan
*
* 0 0 stopped
* 0 1 low speed
* 1 0 high speed
* 1 1 don't do that (*)
*
* (*) I think the two bits control two feed-in resistors into a fixed
* PWN circuit, setting both bits will basically go a 'bit' faster
* than high speed, but d-link doesn't do it and you may get out of
* HW spec so don't do it.
*/
/*
* On the DNS-323 A1 and B1 the following devices are attached via I2C:
*
* i2c addr | chip | description
* 0x3e | GMT G760Af | fan speed PWM controller
* 0x48 | GMT G751-2f | temp. sensor and therm. watchdog (LM75 compatible)
* 0x68 | ST M41T80 | RTC w/ alarm
*/
static struct i2c_board_info __initdata dns323ab_i2c_devices[] = {
{
I2C_BOARD_INFO("g760a", 0x3e),
}, {
I2C_BOARD_INFO("lm75", 0x48),
}, {
I2C_BOARD_INFO("m41t80", 0x68),
},
};
/*
* On the DNS-323 C1 the following devices are attached via I2C:
*
* i2c addr | chip | description
* 0x48 | GMT G751-2f | temp. sensor and therm. watchdog (LM75 compatible)
* 0x68 | ST M41T80 | RTC w/ alarm
*/
static struct i2c_board_info __initdata dns323c_i2c_devices[] = {
{
I2C_BOARD_INFO("lm75", 0x48),
}, {
I2C_BOARD_INFO("m41t80", 0x68),
},
};
/* DNS-323 rev. A specific power off method */
static void dns323a_power_off(void)
{
pr_info("DNS-323: Triggering power-off...\n");
gpio_set_value(DNS323_GPIO_POWER_OFF, 1);
}
/* DNS-323 rev B specific power off method */
static void dns323b_power_off(void)
{
pr_info("DNS-323: Triggering power-off...\n");
/* Pin has to be changed to 1 and back to 0 to do actual power off. */
gpio_set_value(DNS323_GPIO_POWER_OFF, 1);
mdelay(100);
gpio_set_value(DNS323_GPIO_POWER_OFF, 0);
}
/* DNS-323 rev. C specific power off method */
static void dns323c_power_off(void)
{
pr_info("DNS-323: Triggering power-off...\n");
gpio_set_value(DNS323C_GPIO_POWER_OFF, 1);
}
static int dns323c_phy_fixup(struct phy_device *phy)
{
phy->dev_flags |= MARVELL_PHY_M1118_DNS323_LEDS;
return 0;
}
static int __init dns323_identify_rev(void)
{
u32 dev, rev, i, reg;
pr_debug("DNS-323: Identifying board ... \n");
/* Rev A1 has a 5181 */
orion5x_pcie_id(&dev, &rev);
if (dev == MV88F5181_DEV_ID) {
pr_debug("DNS-323: 5181 found, board is A1\n");
return DNS323_REV_A1;
}
pr_debug("DNS-323: 5182 found, board is B1 or C1, checking PHY...\n");
/* Rev B1 and C1 both have 5182, let's poke at the eth PHY. This is
* a bit gross but we want to do that without links into the eth
* driver so let's poke at it directly. We default to rev B1 in
* case the accesses fail
*/
#define ETH_SMI_REG (ORION5X_ETH_VIRT_BASE + 0x2000 + 0x004)
#define SMI_BUSY 0x10000000
#define SMI_READ_VALID 0x08000000
#define SMI_OPCODE_READ 0x04000000
#define SMI_OPCODE_WRITE 0x00000000
for (i = 0; i < 1000; i++) {
reg = readl(ETH_SMI_REG);
if (!(reg & SMI_BUSY))
break;
}
if (i >= 1000) {
pr_warn("DNS-323: Timeout accessing PHY, assuming rev B1\n");
return DNS323_REV_B1;
}
writel((3 << 21) /* phy ID reg */ |
(8 << 16) /* phy addr */ |
SMI_OPCODE_READ, ETH_SMI_REG);
for (i = 0; i < 1000; i++) {
reg = readl(ETH_SMI_REG);
if (reg & SMI_READ_VALID)
break;
}
if (i >= 1000) {
pr_warn("DNS-323: Timeout reading PHY, assuming rev B1\n");
return DNS323_REV_B1;
}
pr_debug("DNS-323: Ethernet PHY ID 0x%x\n", reg & 0xffff);
/* Note: the Marvell tools mask the ID with 0x3f0 before comparison
* but I don't see that making a difference here, at least with
* any known Marvell PHY ID
*/
switch(reg & 0xfff0) {
case 0x0cc0: /* MV88E1111 */
return DNS323_REV_B1;
case 0x0e10: /* MV88E1118 */
return DNS323_REV_C1;
default:
pr_warn("DNS-323: Unknown PHY ID 0x%04x, assuming rev B1\n",
reg & 0xffff);
}
return DNS323_REV_B1;
}
static void __init dns323_init(void)
{
/* Setup basic Orion functions. Need to be called early. */
orion5x_init();
/* Identify revision */
system_rev = dns323_identify_rev();
pr_info("DNS-323: Identified HW revision %c1\n", 'A' + system_rev);
/* Just to be tricky, the 5182 has a completely different
* set of MPP modes to the 5181.
*/
switch(system_rev) {
case DNS323_REV_A1:
orion5x_mpp_conf(dns323a_mpp_modes);
writel(0, MPP_DEV_CTRL); /* DEV_D[31:16] */
break;
case DNS323_REV_B1:
orion5x_mpp_conf(dns323b_mpp_modes);
break;
case DNS323_REV_C1:
orion5x_mpp_conf(dns323c_mpp_modes);
break;
}
/* setup flash mapping
* CS3 holds a 8 MB Spansion S29GL064M90TFIR4
*/
mvebu_mbus_add_window_by_id(ORION_MBUS_DEVBUS_BOOT_TARGET,
ORION_MBUS_DEVBUS_BOOT_ATTR,
DNS323_NOR_BOOT_BASE,
DNS323_NOR_BOOT_SIZE);
platform_device_register(&dns323_nor_flash);
/* Sort out LEDs, Buttons and i2c devices */
switch(system_rev) {
case DNS323_REV_A1:
/* The 5181 power LED is active low and requires
* DNS323_GPIO_LED_POWER1 to also be low.
*/
dns323ab_leds[0].active_low = 1;
gpio_request(DNS323_GPIO_LED_POWER1, "Power Led Enable");
gpio_direction_output(DNS323_GPIO_LED_POWER1, 0);
/* Fall through */
case DNS323_REV_B1:
i2c_register_board_info(0, dns323ab_i2c_devices,
ARRAY_SIZE(dns323ab_i2c_devices));
break;
case DNS323_REV_C1:
/* Hookup LEDs & Buttons */
dns323_gpio_leds.dev.platform_data = &dns323c_led_data;
dns323_button_device.dev.platform_data = &dns323c_button_data;
/* Hookup i2c devices and fan driver */
i2c_register_board_info(0, dns323c_i2c_devices,
ARRAY_SIZE(dns323c_i2c_devices));
platform_device_register_simple("dns323c-fan", 0, NULL, 0);
/* Register fixup for the PHY LEDs */
if (!IS_BUILTIN(CONFIG_PHYLIB))
break;
phy_register_fixup_for_uid(MARVELL_PHY_ID_88E1118,
MARVELL_PHY_ID_MASK,
dns323c_phy_fixup);
}
platform_device_register(&dns323_gpio_leds);
platform_device_register(&dns323_button_device);
/*
* Configure peripherals.
*/
if (dns323_read_mac_addr() < 0)
printk("DNS-323: Failed to read MAC address\n");
orion5x_ehci0_init();
orion5x_eth_init(&dns323_eth_data);
orion5x_i2c_init();
orion5x_uart0_init();
/* Remaining GPIOs */
switch(system_rev) {
case DNS323_REV_A1:
/* Poweroff GPIO */
if (gpio_request(DNS323_GPIO_POWER_OFF, "POWEROFF") != 0 ||
gpio_direction_output(DNS323_GPIO_POWER_OFF, 0) != 0)
pr_err("DNS-323: failed to setup power-off GPIO\n");
pm_power_off = dns323a_power_off;
break;
case DNS323_REV_B1:
/* 5182 built-in SATA init */
orion5x_sata_init(&dns323_sata_data);
/* The DNS323 rev B1 has flag to indicate the system is up.
* Without this flag set, power LED will flash and cannot be
* controlled via leds-gpio.
*/
if (gpio_request(DNS323_GPIO_SYSTEM_UP, "SYS_READY") == 0)
gpio_direction_output(DNS323_GPIO_SYSTEM_UP, 1);
/* Poweroff GPIO */
if (gpio_request(DNS323_GPIO_POWER_OFF, "POWEROFF") != 0 ||
gpio_direction_output(DNS323_GPIO_POWER_OFF, 0) != 0)
pr_err("DNS-323: failed to setup power-off GPIO\n");
pm_power_off = dns323b_power_off;
break;
case DNS323_REV_C1:
/* 5182 built-in SATA init */
orion5x_sata_init(&dns323_sata_data);
/* Poweroff GPIO */
if (gpio_request(DNS323C_GPIO_POWER_OFF, "POWEROFF") != 0 ||
gpio_direction_output(DNS323C_GPIO_POWER_OFF, 0) != 0)
pr_err("DNS-323: failed to setup power-off GPIO\n");
pm_power_off = dns323c_power_off;
/* Now, -this- should theorically be done by the sata_mv driver
* once I figure out what's going on there. Maybe the behaviour
* of the LEDs should be somewhat passed via the platform_data.
* for now, just whack the register and make the LEDs happy
*
* Note: AFAIK, rev B1 needs the same treatement but I'll let
* somebody else test it.
*/
writel(0x5, ORION5X_SATA_VIRT_BASE + 0x2c);
break;
}
}
/* Warning: D-Link uses a wrong mach-type (=526) in their bootloader */
MACHINE_START(DNS323, "D-Link DNS-323")
/* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
.atag_offset = 0x100,
.nr_irqs = ORION5X_NR_IRQS,
.init_machine = dns323_init,
.map_io = orion5x_map_io,
.init_early = orion5x_init_early,
.init_irq = orion5x_init_irq,
.init_time = orion5x_timer_init,
.fixup = tag_fixup_mem32,
.restart = orion5x_restart,
MACHINE_END
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