/*
* 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.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
* NON INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Send feedback to <greg@kroah.com>
*
*/
#ifndef _CPQPHP_H
#define _CPQPHP_H
#include "pci_hotplug.h"
#include <linux/interrupt.h>
#include <asm/io.h> /* for read? and write? functions */
#include <linux/delay.h> /* for delays */
#if !defined(CONFIG_HOTPLUG_PCI_COMPAQ_MODULE)
#define MY_NAME "cpqphp.o"
#else
#define MY_NAME THIS_MODULE->name
#endif
#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;
};
#define SLOT_MAGIC 0x67267321
struct slot {
u32 magic;
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 *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 semaphore crit_sect; /* critical section semaphore */
void *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;
enum pci_bus_speed speed;
enum pci_bus_speed speed_capability;
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 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"
/* sysfs functions for the hotplug controller info */
extern void cpqhp_create_ctrl_files (struct controller *ctrl);
/* controller functions */
extern void cpqhp_pushbutton_thread (unsigned long event_pointer);
extern irqreturn_t cpqhp_ctrl_intr (int IRQ, void *data, struct pt_regs *regs);
extern int cpqhp_find_available_resources (struct controller *ctrl, void *rom_start);
extern int cpqhp_event_start_thread (void);
extern void cpqhp_event_stop_thread (void);
extern struct pci_func *cpqhp_slot_create (unsigned char busnumber);
extern struct pci_func *cpqhp_slot_find (unsigned char bus, unsigned char device, unsigned char index);
extern int cpqhp_process_SI (struct controller *ctrl, struct pci_func *func);
extern int cpqhp_process_SS (struct controller *ctrl, struct pci_func *func);
extern int cpqhp_hardware_test (struct controller *ctrl, int test_num);
/* resource functions */
extern int cpqhp_resource_sort_and_combine (struct pci_resource **head);
/* pci functions */
extern int cpqhp_set_irq (u8 bus_num, u8 dev_num, u8 int_pin, u8 irq_num);
extern int cpqhp_get_bus_dev (struct controller *ctrl, u8 *bus_num, u8 *dev_num, u8 slot);
extern int cpqhp_save_config (struct controller *ctrl, int busnumber, int is_hot_plug);
extern int cpqhp_save_base_addr_length (struct controller *ctrl, struct pci_func * func);
extern int cpqhp_save_used_resources (struct controller *ctrl, struct pci_func * func);
extern int cpqhp_configure_board (struct controller *ctrl, struct pci_func * func);
extern int cpqhp_save_slot_config (struct controller *ctrl, struct pci_func * new_slot);
extern int cpqhp_valid_replace (struct controller *ctrl, struct pci_func * func);
extern void cpqhp_destroy_board_resources (struct pci_func * func);
extern int cpqhp_return_board_resources (struct pci_func * func, struct resource_lists * resources);
extern void cpqhp_destroy_resource_list (struct resource_lists * resources);
extern int cpqhp_configure_device (struct controller* ctrl, struct pci_func* func);
extern int cpqhp_unconfigure_device (struct pci_func* func);
extern struct slot *cpqhp_find_slot (struct controller *ctrl, u8 device);
/* 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];
/* these can be gotten rid of, but for debugging they are purty */
extern u8 cpqhp_nic_irq;
extern u8 cpqhp_disk_irq;
/* inline functions */
/* Inline functions to check the sanity of a pointer that is passed to us */
static inline int slot_paranoia_check (struct slot *slot, const char *function)
{
if (!slot) {
dbg("%s - slot == NULL", function);
return -1;
}
if (slot->magic != SLOT_MAGIC) {
dbg("%s - bad magic number for slot", function);
return -1;
}
if (!slot->hotplug_slot) {
dbg("%s - slot->hotplug_slot == NULL!", function);
return -1;
}
return 0;
}
static inline struct slot *get_slot (struct hotplug_slot *hotplug_slot, const char *function)
{
struct slot *slot;
if (!hotplug_slot) {
dbg("%s - hotplug_slot == NULL\n", function);
return NULL;
}
slot = (struct slot *)hotplug_slot->private;
if (slot_paranoia_check (slot, function))
return NULL;
return 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;
if (slot == NULL)
return 1;
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;
if (slot == NULL)
return 1;
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;
if (slot == NULL)
return 1;
hp_slot = slot->device - ctrl->slot_device_offset;
dbg("%s: slot->device = %d, ctrl->slot_device_offset = %d \n",
__FUNCTION__, 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;
if (slot == NULL)
return 0;
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;
}
#define SLOT_NAME_SIZE 10
static inline void make_slot_name (char *buffer, int buffer_size, struct slot *slot)
{
snprintf (buffer, buffer_size, "%d", slot->number);
}
static inline int wait_for_ctrl_irq (struct controller *ctrl)
{
DECLARE_WAITQUEUE(wait, current);
int retval = 0;
dbg("%s - start\n", __FUNCTION__);
add_wait_queue(&ctrl->queue, &wait);
set_current_state(TASK_INTERRUPTIBLE);
/* Sleep for up to 1 second to wait for the LED to change. */
schedule_timeout(1*HZ);
remove_wait_queue(&ctrl->queue, &wait);
if (signal_pending(current))
retval = -EINTR;
dbg("%s - end\n", __FUNCTION__);
return retval;
}
/**
* set_controller_speed - set the frequency and/or mode of a specific
* controller segment.
*
* @ctrl: controller to change frequency/mode for.
* @adapter_speed: the speed of the adapter we want to match.
* @hp_slot: the slot number where the adapter is installed.
*
* Returns 0 if we successfully change frequency and/or mode to match the
* adapter speed.
*
*/
static inline u8 set_controller_speed(struct controller *ctrl, u8 adapter_speed, u8 hp_slot)
{
struct slot *slot;
u8 reg;
u8 slot_power = readb(ctrl->hpc_reg + SLOT_POWER);
u16 reg16;
u32 leds = readl(ctrl->hpc_reg + LED_CONTROL);
if (ctrl->speed == adapter_speed)
return 0;
/* We don't allow freq/mode changes if we find another adapter running
* in another slot on this controller */
for(slot = ctrl->slot; slot; slot = slot->next) {
if (slot->device == (hp_slot + ctrl->slot_device_offset))
continue;
if (!slot->hotplug_slot && !slot->hotplug_slot->info)
continue;
if (slot->hotplug_slot->info->adapter_status == 0)
continue;
/* If another adapter is running on the same segment but at a
* lower speed/mode, we allow the new adapter to function at
* this rate if supported */
if (ctrl->speed < adapter_speed)
return 0;
return 1;
}
/* If the controller doesn't support freq/mode changes and the
* controller is running at a higher mode, we bail */
if ((ctrl->speed > adapter_speed) && (!ctrl->pcix_speed_capability))
return 1;
/* But we allow the adapter to run at a lower rate if possible */
if ((ctrl->speed < adapter_speed) && (!ctrl->pcix_speed_capability))
return 0;
/* We try to set the max speed supported by both the adapter and
* controller */
if (ctrl->speed_capability < adapter_speed) {
if (ctrl->speed == ctrl->speed_capability)
return 0;
adapter_speed = ctrl->speed_capability;
}
writel(0x0L, ctrl->hpc_reg + LED_CONTROL);
writeb(0x00, ctrl->hpc_reg + SLOT_ENABLE);
set_SOGO(ctrl);
wait_for_ctrl_irq(ctrl);
if (adapter_speed != PCI_SPEED_133MHz_PCIX)
reg = 0xF5;
else
reg = 0xF4;
pci_write_config_byte(ctrl->pci_dev, 0x41, reg);
reg16 = readw(ctrl->hpc_reg + NEXT_CURR_FREQ);
reg16 &= ~0x000F;
switch(adapter_speed) {
case(PCI_SPEED_133MHz_PCIX):
reg = 0x75;
reg16 |= 0xB;
break;
case(PCI_SPEED_100MHz_PCIX):
reg = 0x74;
reg16 |= 0xA;
break;
case(PCI_SPEED_66MHz_PCIX):
reg = 0x73;
reg16 |= 0x9;
break;
case(PCI_SPEED_66MHz):
reg = 0x73;
reg16 |= 0x1;
break;
default: /* 33MHz PCI 2.2 */
reg = 0x71;
break;
}
reg16 |= 0xB << 12;
writew(reg16, ctrl->hpc_reg + NEXT_CURR_FREQ);
mdelay(5);
/* Reenable interrupts */
writel(0, ctrl->hpc_reg + INT_MASK);
pci_write_config_byte(ctrl->pci_dev, 0x41, reg);
/* Restart state machine */
reg = ~0xF;
pci_read_config_byte(ctrl->pci_dev, 0x43, ®);
pci_write_config_byte(ctrl->pci_dev, 0x43, reg);
/* Only if mode change...*/
if (((ctrl->speed == PCI_SPEED_66MHz) && (adapter_speed == PCI_SPEED_66MHz_PCIX)) ||
((ctrl->speed == PCI_SPEED_66MHz_PCIX) && (adapter_speed == PCI_SPEED_66MHz)))
set_SOGO(ctrl);
wait_for_ctrl_irq(ctrl);
mdelay(1100);
/* Restore LED/Slot state */
writel(leds, ctrl->hpc_reg + LED_CONTROL);
writeb(slot_power, ctrl->hpc_reg + SLOT_ENABLE);
set_SOGO(ctrl);
wait_for_ctrl_irq(ctrl);
ctrl->speed = adapter_speed;
slot = cpqhp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
info("Successfully changed frequency/mode for adapter in slot %d\n",
slot->number);
return 0;
}
#endif
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