Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

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 000000000000..67b6a3370ceb
--- /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 */