/* 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