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linuxdebug/drivers/pci/hotplug/cpqphp.h

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null pointer error
2024-07-16 15:50:57 +02:00
/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Compaq Hot Plug Controller Driver
*
* Copyright (C) 1995,2001 Compaq Computer Corporation
* Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
* Copyright (C) 2001 IBM
*
* All rights reserved.
*
* Send feedback to <greg@kroah.com>
*
*/
#ifndef _CPQPHP_H
#define _CPQPHP_H
#include <linux/interrupt.h>
#include <linux/io.h> /* for read? and write? functions */
#include <linux/delay.h> /* for delays */
#include <linux/mutex.h>
#include <linux/sched/signal.h> /* for signal_pending() */
#define MY_NAME "cpqphp"
#define dbg(fmt, arg...) do { if (cpqhp_debug) printk(KERN_DEBUG "%s: " fmt, MY_NAME, ## arg); } while (0)
#define err(format, arg...) printk(KERN_ERR "%s: " format, MY_NAME, ## arg)
#define info(format, arg...) printk(KERN_INFO "%s: " format, MY_NAME, ## arg)
#define warn(format, arg...) printk(KERN_WARNING "%s: " format, MY_NAME, ## arg)
struct smbios_system_slot {
u8 type;
u8 length;
u16 handle;
u8 name_string_num;
u8 slot_type;
u8 slot_width;
u8 slot_current_usage;
u8 slot_length;
u16 slot_number;
u8 properties1;
u8 properties2;
} __attribute__ ((packed));
/* offsets to the smbios generic type based on the above structure layout */
enum smbios_system_slot_offsets {
SMBIOS_SLOT_GENERIC_TYPE = offsetof(struct smbios_system_slot, type),
SMBIOS_SLOT_GENERIC_LENGTH = offsetof(struct smbios_system_slot, length),
SMBIOS_SLOT_GENERIC_HANDLE = offsetof(struct smbios_system_slot, handle),
SMBIOS_SLOT_NAME_STRING_NUM = offsetof(struct smbios_system_slot, name_string_num),
SMBIOS_SLOT_TYPE = offsetof(struct smbios_system_slot, slot_type),
SMBIOS_SLOT_WIDTH = offsetof(struct smbios_system_slot, slot_width),
SMBIOS_SLOT_CURRENT_USAGE = offsetof(struct smbios_system_slot, slot_current_usage),
SMBIOS_SLOT_LENGTH = offsetof(struct smbios_system_slot, slot_length),
SMBIOS_SLOT_NUMBER = offsetof(struct smbios_system_slot, slot_number),
SMBIOS_SLOT_PROPERTIES1 = offsetof(struct smbios_system_slot, properties1),
SMBIOS_SLOT_PROPERTIES2 = offsetof(struct smbios_system_slot, properties2),
};
struct smbios_generic {
u8 type;
u8 length;
u16 handle;
} __attribute__ ((packed));
/* offsets to the smbios generic type based on the above structure layout */
enum smbios_generic_offsets {
SMBIOS_GENERIC_TYPE = offsetof(struct smbios_generic, type),
SMBIOS_GENERIC_LENGTH = offsetof(struct smbios_generic, length),
SMBIOS_GENERIC_HANDLE = offsetof(struct smbios_generic, handle),
};
struct smbios_entry_point {
char anchor[4];
u8 ep_checksum;
u8 ep_length;
u8 major_version;
u8 minor_version;
u16 max_size_entry;
u8 ep_rev;
u8 reserved[5];
char int_anchor[5];
u8 int_checksum;
u16 st_length;
u32 st_address;
u16 number_of_entrys;
u8 bcd_rev;
} __attribute__ ((packed));
/* offsets to the smbios entry point based on the above structure layout */
enum smbios_entry_point_offsets {
ANCHOR = offsetof(struct smbios_entry_point, anchor[0]),
EP_CHECKSUM = offsetof(struct smbios_entry_point, ep_checksum),
EP_LENGTH = offsetof(struct smbios_entry_point, ep_length),
MAJOR_VERSION = offsetof(struct smbios_entry_point, major_version),
MINOR_VERSION = offsetof(struct smbios_entry_point, minor_version),
MAX_SIZE_ENTRY = offsetof(struct smbios_entry_point, max_size_entry),
EP_REV = offsetof(struct smbios_entry_point, ep_rev),
INT_ANCHOR = offsetof(struct smbios_entry_point, int_anchor[0]),
INT_CHECKSUM = offsetof(struct smbios_entry_point, int_checksum),
ST_LENGTH = offsetof(struct smbios_entry_point, st_length),
ST_ADDRESS = offsetof(struct smbios_entry_point, st_address),
NUMBER_OF_ENTRYS = offsetof(struct smbios_entry_point, number_of_entrys),
BCD_REV = offsetof(struct smbios_entry_point, bcd_rev),
};
struct ctrl_reg { /* offset */
u8 slot_RST; /* 0x00 */
u8 slot_enable; /* 0x01 */
u16 misc; /* 0x02 */
u32 led_control; /* 0x04 */
u32 int_input_clear; /* 0x08 */
u32 int_mask; /* 0x0a */
u8 reserved0; /* 0x10 */
u8 reserved1; /* 0x11 */
u8 reserved2; /* 0x12 */
u8 gen_output_AB; /* 0x13 */
u32 non_int_input; /* 0x14 */
u32 reserved3; /* 0x18 */
u32 reserved4; /* 0x1a */
u32 reserved5; /* 0x20 */
u8 reserved6; /* 0x24 */
u8 reserved7; /* 0x25 */
u16 reserved8; /* 0x26 */
u8 slot_mask; /* 0x28 */
u8 reserved9; /* 0x29 */
u8 reserved10; /* 0x2a */
u8 reserved11; /* 0x2b */
u8 slot_SERR; /* 0x2c */
u8 slot_power; /* 0x2d */
u8 reserved12; /* 0x2e */
u8 reserved13; /* 0x2f */
u8 next_curr_freq; /* 0x30 */
u8 reset_freq_mode; /* 0x31 */
} __attribute__ ((packed));
/* offsets to the controller registers based on the above structure layout */
enum ctrl_offsets {
SLOT_RST = offsetof(struct ctrl_reg, slot_RST),
SLOT_ENABLE = offsetof(struct ctrl_reg, slot_enable),
MISC = offsetof(struct ctrl_reg, misc),
LED_CONTROL = offsetof(struct ctrl_reg, led_control),
INT_INPUT_CLEAR = offsetof(struct ctrl_reg, int_input_clear),
INT_MASK = offsetof(struct ctrl_reg, int_mask),
CTRL_RESERVED0 = offsetof(struct ctrl_reg, reserved0),
CTRL_RESERVED1 = offsetof(struct ctrl_reg, reserved1),
CTRL_RESERVED2 = offsetof(struct ctrl_reg, reserved1),
GEN_OUTPUT_AB = offsetof(struct ctrl_reg, gen_output_AB),
NON_INT_INPUT = offsetof(struct ctrl_reg, non_int_input),
CTRL_RESERVED3 = offsetof(struct ctrl_reg, reserved3),
CTRL_RESERVED4 = offsetof(struct ctrl_reg, reserved4),
CTRL_RESERVED5 = offsetof(struct ctrl_reg, reserved5),
CTRL_RESERVED6 = offsetof(struct ctrl_reg, reserved6),
CTRL_RESERVED7 = offsetof(struct ctrl_reg, reserved7),
CTRL_RESERVED8 = offsetof(struct ctrl_reg, reserved8),
SLOT_MASK = offsetof(struct ctrl_reg, slot_mask),
CTRL_RESERVED9 = offsetof(struct ctrl_reg, reserved9),
CTRL_RESERVED10 = offsetof(struct ctrl_reg, reserved10),
CTRL_RESERVED11 = offsetof(struct ctrl_reg, reserved11),
SLOT_SERR = offsetof(struct ctrl_reg, slot_SERR),
SLOT_POWER = offsetof(struct ctrl_reg, slot_power),
NEXT_CURR_FREQ = offsetof(struct ctrl_reg, next_curr_freq),
RESET_FREQ_MODE = offsetof(struct ctrl_reg, reset_freq_mode),
};
struct hrt {
char sig0;
char sig1;
char sig2;
char sig3;
u16 unused_IRQ;
u16 PCIIRQ;
u8 number_of_entries;
u8 revision;
u16 reserved1;
u32 reserved2;
} __attribute__ ((packed));
/* offsets to the hotplug resource table registers based on the above
* structure layout
*/
enum hrt_offsets {
SIG0 = offsetof(struct hrt, sig0),
SIG1 = offsetof(struct hrt, sig1),
SIG2 = offsetof(struct hrt, sig2),
SIG3 = offsetof(struct hrt, sig3),
UNUSED_IRQ = offsetof(struct hrt, unused_IRQ),
PCIIRQ = offsetof(struct hrt, PCIIRQ),
NUMBER_OF_ENTRIES = offsetof(struct hrt, number_of_entries),
REVISION = offsetof(struct hrt, revision),
HRT_RESERVED1 = offsetof(struct hrt, reserved1),
HRT_RESERVED2 = offsetof(struct hrt, reserved2),
};
struct slot_rt {
u8 dev_func;
u8 primary_bus;
u8 secondary_bus;
u8 max_bus;
u16 io_base;
u16 io_length;
u16 mem_base;
u16 mem_length;
u16 pre_mem_base;
u16 pre_mem_length;
} __attribute__ ((packed));
/* offsets to the hotplug slot resource table registers based on the above
* structure layout
*/
enum slot_rt_offsets {
DEV_FUNC = offsetof(struct slot_rt, dev_func),
PRIMARY_BUS = offsetof(struct slot_rt, primary_bus),
SECONDARY_BUS = offsetof(struct slot_rt, secondary_bus),
MAX_BUS = offsetof(struct slot_rt, max_bus),
IO_BASE = offsetof(struct slot_rt, io_base),
IO_LENGTH = offsetof(struct slot_rt, io_length),
MEM_BASE = offsetof(struct slot_rt, mem_base),
MEM_LENGTH = offsetof(struct slot_rt, mem_length),
PRE_MEM_BASE = offsetof(struct slot_rt, pre_mem_base),
PRE_MEM_LENGTH = offsetof(struct slot_rt, pre_mem_length),
};
struct pci_func {
struct pci_func *next;
u8 bus;
u8 device;
u8 function;
u8 is_a_board;
u16 status;
u8 configured;
u8 switch_save;
u8 presence_save;
u32 base_length[0x06];
u8 base_type[0x06];
u16 reserved2;
u32 config_space[0x20];
struct pci_resource *mem_head;
struct pci_resource *p_mem_head;
struct pci_resource *io_head;
struct pci_resource *bus_head;
struct timer_list *p_task_event;
struct pci_dev *pci_dev;
};
struct slot {
struct slot *next;
u8 bus;
u8 device;
u8 number;
u8 is_a_board;
u8 configured;
u8 state;
u8 switch_save;
u8 presence_save;
u32 capabilities;
u16 reserved2;
struct timer_list task_event;
u8 hp_slot;
struct controller *ctrl;
void __iomem *p_sm_slot;
struct hotplug_slot hotplug_slot;
};
struct pci_resource {
struct pci_resource *next;
u32 base;
u32 length;
};
struct event_info {
u32 event_type;
u8 hp_slot;
};
struct controller {
struct controller *next;
u32 ctrl_int_comp;
struct mutex crit_sect; /* critical section mutex */
void __iomem *hpc_reg; /* cookie for our pci controller location */
struct pci_resource *mem_head;
struct pci_resource *p_mem_head;
struct pci_resource *io_head;
struct pci_resource *bus_head;
struct pci_dev *pci_dev;
struct pci_bus *pci_bus;
struct event_info event_queue[10];
struct slot *slot;
u8 next_event;
u8 interrupt;
u8 cfgspc_irq;
u8 bus; /* bus number for the pci hotplug controller */
u8 rev;
u8 slot_device_offset;
u8 first_slot;
u8 add_support;
u8 push_flag;
u8 push_button; /* 0 = no pushbutton, 1 = pushbutton present */
u8 slot_switch_type; /* 0 = no switch, 1 = switch present */
u8 defeature_PHP; /* 0 = PHP not supported, 1 = PHP supported */
u8 alternate_base_address; /* 0 = not supported, 1 = supported */
u8 pci_config_space; /* Index/data access to working registers 0 = not supported, 1 = supported */
u8 pcix_speed_capability; /* PCI-X */
u8 pcix_support; /* PCI-X */
u16 vendor_id;
struct work_struct int_task_event;
wait_queue_head_t queue; /* sleep & wake process */
struct dentry *dentry; /* debugfs dentry */
};
struct irq_mapping {
u8 barber_pole;
u8 valid_INT;
u8 interrupt[4];
};
struct resource_lists {
struct pci_resource *mem_head;
struct pci_resource *p_mem_head;
struct pci_resource *io_head;
struct pci_resource *bus_head;
struct irq_mapping *irqs;
};
#define ROM_PHY_ADDR 0x0F0000
#define ROM_PHY_LEN 0x00ffff
#define PCI_HPC_ID 0xA0F7
#define PCI_SUB_HPC_ID 0xA2F7
#define PCI_SUB_HPC_ID2 0xA2F8
#define PCI_SUB_HPC_ID3 0xA2F9
#define PCI_SUB_HPC_ID_INTC 0xA2FA
#define PCI_SUB_HPC_ID4 0xA2FD
#define INT_BUTTON_IGNORE 0
#define INT_PRESENCE_ON 1
#define INT_PRESENCE_OFF 2
#define INT_SWITCH_CLOSE 3
#define INT_SWITCH_OPEN 4
#define INT_POWER_FAULT 5
#define INT_POWER_FAULT_CLEAR 6
#define INT_BUTTON_PRESS 7
#define INT_BUTTON_RELEASE 8
#define INT_BUTTON_CANCEL 9
#define STATIC_STATE 0
#define BLINKINGON_STATE 1
#define BLINKINGOFF_STATE 2
#define POWERON_STATE 3
#define POWEROFF_STATE 4
#define PCISLOT_INTERLOCK_CLOSED 0x00000001
#define PCISLOT_ADAPTER_PRESENT 0x00000002
#define PCISLOT_POWERED 0x00000004
#define PCISLOT_66_MHZ_OPERATION 0x00000008
#define PCISLOT_64_BIT_OPERATION 0x00000010
#define PCISLOT_REPLACE_SUPPORTED 0x00000020
#define PCISLOT_ADD_SUPPORTED 0x00000040
#define PCISLOT_INTERLOCK_SUPPORTED 0x00000080
#define PCISLOT_66_MHZ_SUPPORTED 0x00000100
#define PCISLOT_64_BIT_SUPPORTED 0x00000200
#define PCI_TO_PCI_BRIDGE_CLASS 0x00060400
#define INTERLOCK_OPEN 0x00000002
#define ADD_NOT_SUPPORTED 0x00000003
#define CARD_FUNCTIONING 0x00000005
#define ADAPTER_NOT_SAME 0x00000006
#define NO_ADAPTER_PRESENT 0x00000009
#define NOT_ENOUGH_RESOURCES 0x0000000B
#define DEVICE_TYPE_NOT_SUPPORTED 0x0000000C
#define POWER_FAILURE 0x0000000E
#define REMOVE_NOT_SUPPORTED 0x00000003
/*
* error Messages
*/
#define msg_initialization_err "Initialization failure, error=%d\n"
#define msg_HPC_rev_error "Unsupported revision of the PCI hot plug controller found.\n"
#define msg_HPC_non_compaq_or_intel "The PCI hot plug controller is not supported by this driver.\n"
#define msg_HPC_not_supported "this system is not supported by this version of cpqphpd. Upgrade to a newer version of cpqphpd\n"
#define msg_unable_to_save "unable to store PCI hot plug add resource information. This system must be rebooted before adding any PCI devices.\n"
#define msg_button_on "PCI slot #%d - powering on due to button press.\n"
#define msg_button_off "PCI slot #%d - powering off due to button press.\n"
#define msg_button_cancel "PCI slot #%d - action canceled due to button press.\n"
#define msg_button_ignore "PCI slot #%d - button press ignored. (action in progress...)\n"
/* debugfs functions for the hotplug controller info */
void cpqhp_initialize_debugfs(void);
void cpqhp_shutdown_debugfs(void);
void cpqhp_create_debugfs_files(struct controller *ctrl);
void cpqhp_remove_debugfs_files(struct controller *ctrl);
/* controller functions */
void cpqhp_pushbutton_thread(struct timer_list *t);
irqreturn_t cpqhp_ctrl_intr(int IRQ, void *data);
int cpqhp_find_available_resources(struct controller *ctrl,
void __iomem *rom_start);
int cpqhp_event_start_thread(void);
void cpqhp_event_stop_thread(void);
struct pci_func *cpqhp_slot_create(unsigned char busnumber);
struct pci_func *cpqhp_slot_find(unsigned char bus, unsigned char device,
unsigned char index);
int cpqhp_process_SI(struct controller *ctrl, struct pci_func *func);
int cpqhp_process_SS(struct controller *ctrl, struct pci_func *func);
int cpqhp_hardware_test(struct controller *ctrl, int test_num);
/* resource functions */
int cpqhp_resource_sort_and_combine(struct pci_resource **head);
/* pci functions */
int cpqhp_set_irq(u8 bus_num, u8 dev_num, u8 int_pin, u8 irq_num);
int cpqhp_get_bus_dev(struct controller *ctrl, u8 *bus_num, u8 *dev_num,
u8 slot);
int cpqhp_save_config(struct controller *ctrl, int busnumber, int is_hot_plug);
int cpqhp_save_base_addr_length(struct controller *ctrl, struct pci_func *func);
int cpqhp_save_used_resources(struct controller *ctrl, struct pci_func *func);
int cpqhp_configure_board(struct controller *ctrl, struct pci_func *func);
int cpqhp_save_slot_config(struct controller *ctrl, struct pci_func *new_slot);
int cpqhp_valid_replace(struct controller *ctrl, struct pci_func *func);
void cpqhp_destroy_board_resources(struct pci_func *func);
int cpqhp_return_board_resources(struct pci_func *func,
struct resource_lists *resources);
void cpqhp_destroy_resource_list(struct resource_lists *resources);
int cpqhp_configure_device(struct controller *ctrl, struct pci_func *func);
int cpqhp_unconfigure_device(struct pci_func *func);
/* Global variables */
extern int cpqhp_debug;
extern int cpqhp_legacy_mode;
extern struct controller *cpqhp_ctrl_list;
extern struct pci_func *cpqhp_slot_list[256];
extern struct irq_routing_table *cpqhp_routing_table;
/* these can be gotten rid of, but for debugging they are purty */
extern u8 cpqhp_nic_irq;
extern u8 cpqhp_disk_irq;
/* inline functions */
static inline const char *slot_name(struct slot *slot)
{
return hotplug_slot_name(&slot->hotplug_slot);
}
static inline struct slot *to_slot(struct hotplug_slot *hotplug_slot)
{
return container_of(hotplug_slot, struct slot, hotplug_slot);
}
/*
* return_resource
*
* Puts node back in the resource list pointed to by head
*/
static inline void return_resource(struct pci_resource **head,
struct pci_resource *node)
{
if (!node || !head)
return;
node->next = *head;
*head = node;
}
static inline void set_SOGO(struct controller *ctrl)
{
u16 misc;
misc = readw(ctrl->hpc_reg + MISC);
misc = (misc | 0x0001) & 0xFFFB;
writew(misc, ctrl->hpc_reg + MISC);
}
static inline void amber_LED_on(struct controller *ctrl, u8 slot)
{
u32 led_control;
led_control = readl(ctrl->hpc_reg + LED_CONTROL);
led_control |= (0x01010000L << slot);
writel(led_control, ctrl->hpc_reg + LED_CONTROL);
}
static inline void amber_LED_off(struct controller *ctrl, u8 slot)
{
u32 led_control;
led_control = readl(ctrl->hpc_reg + LED_CONTROL);
led_control &= ~(0x01010000L << slot);
writel(led_control, ctrl->hpc_reg + LED_CONTROL);
}
static inline int read_amber_LED(struct controller *ctrl, u8 slot)
{
u32 led_control;
led_control = readl(ctrl->hpc_reg + LED_CONTROL);
led_control &= (0x01010000L << slot);
return led_control ? 1 : 0;
}
static inline void green_LED_on(struct controller *ctrl, u8 slot)
{
u32 led_control;
led_control = readl(ctrl->hpc_reg + LED_CONTROL);
led_control |= 0x0101L << slot;
writel(led_control, ctrl->hpc_reg + LED_CONTROL);
}
static inline void green_LED_off(struct controller *ctrl, u8 slot)
{
u32 led_control;
led_control = readl(ctrl->hpc_reg + LED_CONTROL);
led_control &= ~(0x0101L << slot);
writel(led_control, ctrl->hpc_reg + LED_CONTROL);
}
static inline void green_LED_blink(struct controller *ctrl, u8 slot)
{
u32 led_control;
led_control = readl(ctrl->hpc_reg + LED_CONTROL);
led_control &= ~(0x0101L << slot);
led_control |= (0x0001L << slot);
writel(led_control, ctrl->hpc_reg + LED_CONTROL);
}
static inline void slot_disable(struct controller *ctrl, u8 slot)
{
u8 slot_enable;
slot_enable = readb(ctrl->hpc_reg + SLOT_ENABLE);
slot_enable &= ~(0x01 << slot);
writeb(slot_enable, ctrl->hpc_reg + SLOT_ENABLE);
}
static inline void slot_enable(struct controller *ctrl, u8 slot)
{
u8 slot_enable;
slot_enable = readb(ctrl->hpc_reg + SLOT_ENABLE);
slot_enable |= (0x01 << slot);
writeb(slot_enable, ctrl->hpc_reg + SLOT_ENABLE);
}
static inline u8 is_slot_enabled(struct controller *ctrl, u8 slot)
{
u8 slot_enable;
slot_enable = readb(ctrl->hpc_reg + SLOT_ENABLE);
slot_enable &= (0x01 << slot);
return slot_enable ? 1 : 0;
}
static inline u8 read_slot_enable(struct controller *ctrl)
{
return readb(ctrl->hpc_reg + SLOT_ENABLE);
}
/**
* get_controller_speed - find the current frequency/mode of controller.
*
* @ctrl: controller to get frequency/mode for.
*
* Returns controller speed.
*/
static inline u8 get_controller_speed(struct controller *ctrl)
{
u8 curr_freq;
u16 misc;
if (ctrl->pcix_support) {
curr_freq = readb(ctrl->hpc_reg + NEXT_CURR_FREQ);
if ((curr_freq & 0xB0) == 0xB0)
return PCI_SPEED_133MHz_PCIX;
if ((curr_freq & 0xA0) == 0xA0)
return PCI_SPEED_100MHz_PCIX;
if ((curr_freq & 0x90) == 0x90)
return PCI_SPEED_66MHz_PCIX;
if (curr_freq & 0x10)
return PCI_SPEED_66MHz;
return PCI_SPEED_33MHz;
}
misc = readw(ctrl->hpc_reg + MISC);
return (misc & 0x0800) ? PCI_SPEED_66MHz : PCI_SPEED_33MHz;
}
/**
* get_adapter_speed - find the max supported frequency/mode of adapter.
*
* @ctrl: hotplug controller.
* @hp_slot: hotplug slot where adapter is installed.
*
* Returns adapter speed.
*/
static inline u8 get_adapter_speed(struct controller *ctrl, u8 hp_slot)
{
u32 temp_dword = readl(ctrl->hpc_reg + NON_INT_INPUT);
dbg("slot: %d, PCIXCAP: %8x\n", hp_slot, temp_dword);
if (ctrl->pcix_support) {
if (temp_dword & (0x10000 << hp_slot))
return PCI_SPEED_133MHz_PCIX;
if (temp_dword & (0x100 << hp_slot))
return PCI_SPEED_66MHz_PCIX;
}
if (temp_dword & (0x01 << hp_slot))
return PCI_SPEED_66MHz;
return PCI_SPEED_33MHz;
}
static inline void enable_slot_power(struct controller *ctrl, u8 slot)
{
u8 slot_power;
slot_power = readb(ctrl->hpc_reg + SLOT_POWER);
slot_power |= (0x01 << slot);
writeb(slot_power, ctrl->hpc_reg + SLOT_POWER);
}
static inline void disable_slot_power(struct controller *ctrl, u8 slot)
{
u8 slot_power;
slot_power = readb(ctrl->hpc_reg + SLOT_POWER);
slot_power &= ~(0x01 << slot);
writeb(slot_power, ctrl->hpc_reg + SLOT_POWER);
}
static inline int cpq_get_attention_status(struct controller *ctrl, struct slot *slot)
{
u8 hp_slot;
hp_slot = slot->device - ctrl->slot_device_offset;
return read_amber_LED(ctrl, hp_slot);
}
static inline int get_slot_enabled(struct controller *ctrl, struct slot *slot)
{
u8 hp_slot;
hp_slot = slot->device - ctrl->slot_device_offset;
return is_slot_enabled(ctrl, hp_slot);
}
static inline int cpq_get_latch_status(struct controller *ctrl,
struct slot *slot)
{
u32 status;
u8 hp_slot;
hp_slot = slot->device - ctrl->slot_device_offset;
dbg("%s: slot->device = %d, ctrl->slot_device_offset = %d\n",
__func__, slot->device, ctrl->slot_device_offset);
status = (readl(ctrl->hpc_reg + INT_INPUT_CLEAR) & (0x01L << hp_slot));
return (status == 0) ? 1 : 0;
}
static inline int get_presence_status(struct controller *ctrl,
struct slot *slot)
{
int presence_save = 0;
u8 hp_slot;
u32 tempdword;
hp_slot = slot->device - ctrl->slot_device_offset;
tempdword = readl(ctrl->hpc_reg + INT_INPUT_CLEAR);
presence_save = (int) ((((~tempdword) >> 23) | ((~tempdword) >> 15))
>> hp_slot) & 0x02;
return presence_save;
}
static inline int wait_for_ctrl_irq(struct controller *ctrl)
{
DECLARE_WAITQUEUE(wait, current);
int retval = 0;
dbg("%s - start\n", __func__);
add_wait_queue(&ctrl->queue, &wait);
/* Sleep for up to 1 second to wait for the LED to change. */
msleep_interruptible(1000);
remove_wait_queue(&ctrl->queue, &wait);
if (signal_pending(current))
retval = -EINTR;
dbg("%s - end\n", __func__);
return retval;
}
#include <asm/pci_x86.h>
static inline int cpqhp_routing_table_length(void)
{
BUG_ON(cpqhp_routing_table == NULL);
return ((cpqhp_routing_table->size - sizeof(struct irq_routing_table)) /
sizeof(struct irq_info));
}
#endif