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path: root/drivers/pci/hotplug/shpchp.h
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Diffstat (limited to 'drivers/pci/hotplug/shpchp.h')
-rw-r--r--drivers/pci/hotplug/shpchp.h463
1 files changed, 463 insertions, 0 deletions
diff --git a/drivers/pci/hotplug/shpchp.h b/drivers/pci/hotplug/shpchp.h
new file mode 100644
index 00000000000..67b6a3370ce
--- /dev/null
+++ b/drivers/pci/hotplug/shpchp.h
@@ -0,0 +1,463 @@
+/*
+ * Standard Hot Plug Controller Driver
+ *
+ * Copyright (C) 1995,2001 Compaq Computer Corporation
+ * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
+ * Copyright (C) 2001 IBM
+ * 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 _SHPCHP_H
+#define _SHPCHP_H
+
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <asm/semaphore.h>
+#include <asm/io.h>
+#include "pci_hotplug.h"
+
+#if !defined(MODULE)
+ #define MY_NAME "shpchp"
+#else
+ #define MY_NAME THIS_MODULE->name
+#endif
+
+extern int shpchp_poll_mode;
+extern int shpchp_poll_time;
+extern int shpchp_debug;
+
+/*#define dbg(format, arg...) do { if (shpchp_debug) printk(KERN_DEBUG "%s: " format, MY_NAME , ## arg); } while (0)*/
+#define dbg(format, arg...) do { if (shpchp_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;
+ u8 pwr_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 */
+ 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 AMD SHPC ID */
+#define PCI_DEVICE_ID_AMD_GOLAM_7450 0x7450
+
+#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_shpc "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 shpcphd mdoule. Upgrade to a newer version of shpchpd\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 shpchp_create_ctrl_files (struct controller *ctrl);
+
+/* controller functions */
+extern int shpchprm_find_available_resources(struct controller *ctrl);
+extern int shpchp_event_start_thread(void);
+extern void shpchp_event_stop_thread(void);
+extern struct pci_func *shpchp_slot_create(unsigned char busnumber);
+extern struct pci_func *shpchp_slot_find(unsigned char bus, unsigned char device, unsigned char index);
+extern int shpchp_enable_slot(struct slot *slot);
+extern int shpchp_disable_slot(struct slot *slot);
+
+extern u8 shpchp_handle_attention_button(u8 hp_slot, void *inst_id);
+extern u8 shpchp_handle_switch_change(u8 hp_slot, void *inst_id);
+extern u8 shpchp_handle_presence_change(u8 hp_slot, void *inst_id);
+extern u8 shpchp_handle_power_fault(u8 hp_slot, void *inst_id);
+
+/* resource functions */
+extern int shpchp_resource_sort_and_combine(struct pci_resource **head);
+
+/* pci functions */
+extern int shpchp_set_irq(u8 bus_num, u8 dev_num, u8 int_pin, u8 irq_num);
+/*extern int shpchp_get_bus_dev(struct controller *ctrl, u8 *bus_num, u8 *dev_num, struct slot *slot);*/
+extern int shpchp_save_config(struct controller *ctrl, int busnumber, int num_ctlr_slots, int first_device_num);
+extern int shpchp_save_used_resources(struct controller *ctrl, struct pci_func * func, int flag);
+extern int shpchp_save_slot_config(struct controller *ctrl, struct pci_func * new_slot);
+extern void shpchp_destroy_board_resources(struct pci_func * func);
+extern int shpchp_return_board_resources(struct pci_func * func, struct resource_lists * resources);
+extern void shpchp_destroy_resource_list(struct resource_lists * resources);
+extern int shpchp_configure_device(struct controller* ctrl, struct pci_func* func);
+extern int shpchp_unconfigure_device(struct pci_func* func);
+
+
+/* Global variables */
+extern struct controller *shpchp_ctrl_list;
+extern struct pci_func *shpchp_slot_list[256];
+
+/* These are added to support AMD shpc */
+extern u8 shpchp_nic_irq;
+extern u8 shpchp_disk_irq;
+
+struct ctrl_reg {
+ volatile u32 base_offset;
+ volatile u32 slot_avail1;
+ volatile u32 slot_avail2;
+ volatile u32 slot_config;
+ volatile u16 sec_bus_config;
+ volatile u8 msi_ctrl;
+ volatile u8 prog_interface;
+ volatile u16 cmd;
+ volatile u16 cmd_status;
+ volatile u32 intr_loc;
+ volatile u32 serr_loc;
+ volatile u32 serr_intr_enable;
+ volatile u32 slot1;
+ volatile u32 slot2;
+ volatile u32 slot3;
+ volatile u32 slot4;
+ volatile u32 slot5;
+ volatile u32 slot6;
+ volatile u32 slot7;
+ volatile u32 slot8;
+ volatile u32 slot9;
+ volatile u32 slot10;
+ volatile u32 slot11;
+ volatile u32 slot12;
+} __attribute__ ((packed));
+
+/* offsets to the controller registers based on the above structure layout */
+enum ctrl_offsets {
+ BASE_OFFSET = offsetof(struct ctrl_reg, base_offset),
+ SLOT_AVAIL1 = offsetof(struct ctrl_reg, slot_avail1),
+ SLOT_AVAIL2 = offsetof(struct ctrl_reg, slot_avail2),
+ SLOT_CONFIG = offsetof(struct ctrl_reg, slot_config),
+ SEC_BUS_CONFIG = offsetof(struct ctrl_reg, sec_bus_config),
+ MSI_CTRL = offsetof(struct ctrl_reg, msi_ctrl),
+ PROG_INTERFACE = offsetof(struct ctrl_reg, prog_interface),
+ CMD = offsetof(struct ctrl_reg, cmd),
+ CMD_STATUS = offsetof(struct ctrl_reg, cmd_status),
+ INTR_LOC = offsetof(struct ctrl_reg, intr_loc),
+ SERR_LOC = offsetof(struct ctrl_reg, serr_loc),
+ SERR_INTR_ENABLE = offsetof(struct ctrl_reg, serr_intr_enable),
+ SLOT1 = offsetof(struct ctrl_reg, slot1),
+ SLOT2 = offsetof(struct ctrl_reg, slot2),
+ SLOT3 = offsetof(struct ctrl_reg, slot3),
+ SLOT4 = offsetof(struct ctrl_reg, slot4),
+ SLOT5 = offsetof(struct ctrl_reg, slot5),
+ SLOT6 = offsetof(struct ctrl_reg, slot6),
+ SLOT7 = offsetof(struct ctrl_reg, slot7),
+ SLOT8 = offsetof(struct ctrl_reg, slot8),
+ SLOT9 = offsetof(struct ctrl_reg, slot9),
+ SLOT10 = offsetof(struct ctrl_reg, slot10),
+ SLOT11 = offsetof(struct ctrl_reg, slot11),
+ SLOT12 = offsetof(struct ctrl_reg, slot12),
+};
+typedef u8(*php_intr_callback_t) (unsigned int change_id, void *instance_id);
+struct php_ctlr_state_s {
+ struct php_ctlr_state_s *pnext;
+ struct pci_dev *pci_dev;
+ unsigned int irq;
+ unsigned long flags; /* spinlock's */
+ u32 slot_device_offset;
+ u32 num_slots;
+ struct timer_list int_poll_timer; /* Added for poll event */
+ 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;
+ void *callback_instance_id;
+ void __iomem *creg; /* Ptr to controller register space */
+};
+/* 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 *shpchp_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: shpchp_find_slot device=0x%x\n", device);
+ p_slot = tmp_slot;
+ }
+
+ return (p_slot);
+}
+
+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);
+
+ if (!shpchp_poll_mode) {
+ /* Sleep for up to 1 second */
+ msleep_interruptible(1000);
+ } else {
+ /* Sleep for up to 2 seconds */
+ msleep_interruptible(2000);
+ }
+ 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
+};
+
+int shpc_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);
+
+int shpc_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 (*slot_enable ) (struct slot *slot);
+ int (*slot_disable ) (struct slot *slot);
+ int (*enable_all_slots) (struct slot *slot);
+ int (*pwr_on_all_slots) (struct slot *slot);
+ int (*set_bus_speed_mode) (struct slot *slot, enum pci_bus_speed speed);
+ 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_adapter_speed) (struct slot *slot, enum pci_bus_speed *speed);
+ int (*get_mode1_ECC_cap) (struct slot *slot, u8 *mode);
+ int (*get_prog_int) (struct slot *slot, u8 *prog_int);
+
+ 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_cmd_status) (struct controller *ctrl);
+};
+
+#endif /* _SHPCHP_H */