patch-2.4.27 linux-2.4.27/drivers/hotplug/pciehp.h

• Lines: 384
• Date: 2004-08-07 16:26:04.742350393 -0700
• Orig file: linux-2.4.26/drivers/hotplug/pciehp.h
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.26/drivers/hotplug/pciehp.h linux-2.4.27/drivers/hotplug/pciehp.h
@@ -0,0 +1,383 @@
+/*
+ * PCI Express Hot Plug Controller Driver
+ *
+ * Copyright (C) 1995,2001 Compaq Computer Corporation
+ * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
+ * Copyright (C) 2001 IBM Corp.
+ * Copyright (C) 2003-2004 Intel Corporation
+ *
+ * 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>, <dely.l.sy@intel.com>
+ *
+ */
+#ifndef _PCIEHP_H
+#define _PCIEHP_H
+
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <asm/semaphore.h>
+#include <asm/io.h>		
+#include "pci_hotplug.h"
+
+#if !defined(CONFIG_HOTPLUG_PCI_PCIE_MODULE)
+	#define MY_NAME	"pciehp.o"
+#else
+	#define MY_NAME	THIS_MODULE->name
+#endif
+
+extern int pciehp_poll_mode;
+extern int pciehp_poll_time;
+extern int pciehp_debug;
+
+extern int pciehp_msi_quirk;
+
+/*#define dbg(format, arg...) do { if (pciehp_debug) printk(KERN_DEBUG "%s: " format, MY_NAME , ## arg); } while (0)*/
+#define dbg(format, arg...) do { if (pciehp_debug) printk("%s: " format, 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 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 pci_dev* pci_dev;
+};
+
+#define SLOT_MAGIC	0x67267321
+struct slot {
+	u32 magic;
+	struct slot *next;
+	u8 bus;
+	u8 device;
+	u32 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;
+	struct hpc_ops *hpc_ops;
+	struct hotplug_slot *hotplug_slot;
+	struct list_head	slot_list;
+};
+
+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;
+	struct semaphore crit_sect;	/* critical section semaphore */
+	void * hpc_ctlr_handle;		/* HPC controller handle */
+	int num_slots;			/* Number of slots on ctlr */
+	int slot_num_inc;			/* 1 or -1 */
+	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;
+	struct hpc_ops *hpc_ops;
+	wait_queue_head_t queue;	/* sleep & wake process */
+	u8 next_event;
+	u8 seg;
+	u8 bus;
+	u8 device;
+	u8 function;
+	u8 rev;
+	u8 slot_device_offset;
+	u8 add_support;
+	enum pci_bus_speed speed;
+	u32 first_slot;		/* First physical slot number;  PCI-E only has 1 slot */
+	u8 slot_bus;		/* Bus where the slots handled by this controller sit */
+	u8 push_flag;
+	u16 ctlrcap;
+	u16 vendor_id;
+};
+
+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 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 PCI_TO_PCI_BRIDGE_CLASS		0x00060400
+
+/* Error messages */
+#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 WRONG_BUS_FREQUENCY		0x0000000D
+#define POWER_FAILURE			0x0000000E
+
+#define REMOVE_NOT_SUPPORTED		0x00000003
+
+#define DISABLE_CARD			1
+
+/*
+ * 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_pcie	"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 pciephd mdoule. Upgrade to a newer version of pciehpd\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"
+
+/* controller functions */
+extern void	pciehp_pushbutton_thread	(unsigned long event_pointer);
+extern int	pciehprm_find_available_resources	(struct controller *ctrl);
+extern int	pciehp_event_start_thread	(void);
+extern void	pciehp_event_stop_thread	(void);
+extern struct pci_func *pciehp_slot_create	(unsigned char busnumber);
+extern struct pci_func *pciehp_slot_find	(unsigned char bus, unsigned char device, unsigned char index);
+extern int	pciehp_enable_slot		(struct slot *slot);
+extern int	pciehp_disable_slot		(struct slot *slot);
+
+extern u8	pciehp_handle_attention_button	(u8 hp_slot, void *inst_id);
+extern u8	pciehp_handle_switch_change	(u8 hp_slot, void *inst_id);
+extern u8	pciehp_handle_presence_change	(u8 hp_slot, void *inst_id);
+extern u8	pciehp_handle_power_fault	(u8 hp_slot, void *inst_id);
+/* extern void	long_delay (int delay); */
+
+/* resource functions */
+extern int	pciehp_resource_sort_and_combine	(struct pci_resource **head);
+
+/* pci functions */
+extern int	pciehp_set_irq			(u8 bus_num, u8 dev_num, u8 int_pin, u8 irq_num);
+extern int	pciehp_save_config	 	(struct controller *ctrl, int busnumber, int num_ctlr_slots, int first_device_num);
+extern int	pciehp_save_used_resources	(struct controller *ctrl, struct pci_func * func, int flag);
+extern int	pciehp_save_slot_config		(struct controller *ctrl, struct pci_func * new_slot);
+extern void	pciehp_destroy_board_resources	(struct pci_func * func);
+extern int	pciehp_return_board_resources	(struct pci_func * func, struct resource_lists * resources);
+extern void	pciehp_destroy_resource_list	(struct resource_lists * resources);
+extern int	pciehp_configure_device		(struct controller* ctrl, struct pci_func* func);
+extern int	pciehp_unconfigure_device	(struct pci_func* func);
+
+
+/* Global variables */
+extern struct controller *pciehp_ctrl_list;
+extern struct pci_func *pciehp_slot_list[256];
+
+/* 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;
+}
+
+static inline struct slot *pciehp_find_slot (struct controller *ctrl, u8 device)
+{
+	struct slot *p_slot, *tmp_slot = NULL;
+
+	if (!ctrl)
+		return NULL;
+
+	p_slot = ctrl->slot;
+
+	dbg("p_slot = %p\n", p_slot);
+
+	while (p_slot && (p_slot->device != device)) {
+		tmp_slot = p_slot;
+		p_slot = p_slot->next;
+		dbg("In while loop, p_slot = %p\n", p_slot);
+	}
+	if (p_slot == NULL) {
+		err("ERROR: pciehp_find_slot device=0x%x\n", device);
+		p_slot = tmp_slot;
+	}
+
+	return (p_slot);
+}
+
+static inline int wait_for_ctrl_irq (struct controller *ctrl)
+{
+	int retval = 0;
+
+		DECLARE_WAITQUEUE(wait, current);
+
+		dbg("%s : start\n", __FUNCTION__);
+		add_wait_queue(&ctrl->queue, &wait);
+		set_current_state(TASK_INTERRUPTIBLE);
+		if (!pciehp_poll_mode) {
+			/* Sleep for up to 1 second */
+			schedule_timeout(1*HZ);
+		} else
+			schedule_timeout(2.5*HZ);
+		set_current_state(TASK_RUNNING);
+		remove_wait_queue(&ctrl->queue, &wait);
+		if (signal_pending(current))
+			retval =  -EINTR;
+
+		dbg("%s : end\n", __FUNCTION__);
+
+	return retval;
+}
+
+
+/* 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;
+}
+
+#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);
+}
+
+enum php_ctlr_type {
+	PCI,
+	ISA,
+	ACPI
+};
+
+typedef u8(*php_intr_callback_t) (unsigned int change_id, void *instance_id);
+
+int pcie_init( struct controller *ctrl, struct pci_dev *pdev,
+		php_intr_callback_t attention_button_callback,
+		php_intr_callback_t switch_change_callback,
+		php_intr_callback_t presence_change_callback,
+		php_intr_callback_t power_fault_callback);
+
+/* This has no meaning for PCI Express, as there is only 1 slot per port */
+int pcie_get_ctlr_slot_config( struct controller *ctrl,
+		int *num_ctlr_slots,
+		int *first_device_num,
+		int *physical_slot_num,
+		int *updown,
+		int *flags);
+
+struct hpc_ops {
+	int	(*power_on_slot )	(struct slot *slot);
+	int	(*power_off_slot )	(struct slot *slot);
+	int	(*get_power_status)	(struct slot *slot, u8 *status);
+	int	(*get_attention_status)	(struct slot *slot, u8 *status);
+	int	(*set_attention_status)	(struct slot *slot, u8 status);
+	int	(*get_latch_status)	(struct slot *slot, u8 *status);
+	int	(*get_adapter_status)	(struct slot *slot, u8 *status);
+
+	int	(*get_max_bus_speed)	(struct slot *slot, enum pci_bus_speed *speed);
+	int	(*get_cur_bus_speed)	(struct slot *slot, enum pci_bus_speed *speed);
+	int	(*get_max_lnk_width)	(struct slot *slot, enum pcie_link_width *value);
+	int	(*get_cur_lnk_width)	(struct slot *slot, enum pcie_link_width *value);
+
+	int	(*query_power_fault)	(struct slot *slot);
+	void 	(*green_led_on)		(struct slot *slot);
+	void	(*green_led_off)	(struct slot *slot);
+	void	(*green_led_blink)	(struct slot *slot);
+	void	(*release_ctlr)		(struct controller *ctrl);
+	int (*check_lnk_status)		(struct controller *ctrl);
+};
+
+#endif				/* _PCIEHP_H */