/* * 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 , * */ #ifndef _SHPCHP_H #define _SHPCHP_H #include #include #include #include /* signal_pending(), struct timer_list */ #include #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) #define SLOT_MAGIC 0x67267321 struct slot { u32 magic; u8 bus; u8 device; u16 status; u32 number; u8 is_a_board; u8 state; u8 presence_save; u8 pwr_save; 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 event_info { u32 event_type; u8 hp_slot; }; struct controller { struct list_head ctrl_list; struct mutex crit_sect; /* critical section mutex */ struct mutex cmd_lock; /* command lock */ struct php_ctlr_state_s *hpc_ctlr_handle; /* HPC controller handle */ int num_slots; /* Number of slots on ctlr */ int slot_num_inc; /* 1 or -1 */ struct pci_dev *pci_dev; struct pci_bus *pci_bus; struct event_info event_queue[10]; struct list_head slot_list; struct hpc_ops *hpc_ops; wait_queue_head_t queue; /* sleep & wake process */ u8 next_event; u8 bus; u8 device; u8 function; u8 slot_device_offset; u8 add_support; u32 pcix_misc2_reg; /* for amd pogo errata */ enum pci_bus_speed speed; u32 first_slot; /* First physical slot number */ u8 slot_bus; /* Bus where the slots handled by this controller sit */ u32 cap_offset; unsigned long mmio_base; unsigned long mmio_size; volatile int cmd_busy; }; struct hotplug_params { u8 cache_line_size; u8 latency_timer; u8 enable_serr; u8 enable_perr; }; /* Define AMD SHPC ID */ #define PCI_DEVICE_ID_AMD_GOLAM_7450 0x7450 #define PCI_DEVICE_ID_AMD_POGO_7458 0x7458 /* AMD PCIX bridge registers */ #define PCIX_MEM_BASE_LIMIT_OFFSET 0x1C #define PCIX_MISCII_OFFSET 0x48 #define PCIX_MISC_BRIDGE_ERRORS_OFFSET 0x80 /* AMD PCIX_MISCII masks and offsets */ #define PERRNONFATALENABLE_MASK 0x00040000 #define PERRFATALENABLE_MASK 0x00080000 #define PERRFLOODENABLE_MASK 0x00100000 #define SERRNONFATALENABLE_MASK 0x00200000 #define SERRFATALENABLE_MASK 0x00400000 /* AMD PCIX_MISC_BRIDGE_ERRORS masks and offsets */ #define PERR_OBSERVED_MASK 0x00000001 /* AMD PCIX_MEM_BASE_LIMIT masks */ #define RSE_MASK 0x40000000 #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_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" /* sysfs functions for the hotplug controller info */ extern void shpchp_create_ctrl_files (struct controller *ctrl); /* controller functions */ extern int shpchp_event_start_thread(void); extern void shpchp_event_stop_thread(void); 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); /* pci functions */ extern int shpchp_save_config(struct controller *ctrl, int busnumber, int num_ctlr_slots, int first_device_num); extern int shpchp_configure_device(struct slot *p_slot); extern int shpchp_unconfigure_device(struct slot *p_slot); extern void get_hp_hw_control_from_firmware(struct pci_dev *dev); extern void get_hp_params_from_firmware(struct pci_dev *dev, struct hotplug_params *hpp); extern int shpchprm_get_physical_slot_number(struct controller *ctrl, u32 *sun, u8 busnum, u8 devnum); extern void shpchp_remove_ctrl_files(struct controller *ctrl); /* Global variables */ extern struct list_head shpchp_ctrl_list; 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) (u8 hp_slot, 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 *slot; if (!ctrl) return NULL; list_for_each_entry(slot, &ctrl->slot_list, slot_list) { if (slot->device == device) return slot; } err("%s: slot (device=0x%x) not found\n", __FUNCTION__, device); return NULL; } static inline int wait_for_ctrl_irq (struct controller *ctrl) { DECLARE_WAITQUEUE(wait, current); int retval = 0; 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; return retval; } static inline void amd_pogo_errata_save_misc_reg(struct slot *p_slot) { u32 pcix_misc2_temp; /* save MiscII register */ pci_read_config_dword(p_slot->ctrl->pci_dev, PCIX_MISCII_OFFSET, &pcix_misc2_temp); p_slot->ctrl->pcix_misc2_reg = pcix_misc2_temp; /* clear SERR/PERR enable bits */ pcix_misc2_temp &= ~SERRFATALENABLE_MASK; pcix_misc2_temp &= ~SERRNONFATALENABLE_MASK; pcix_misc2_temp &= ~PERRFLOODENABLE_MASK; pcix_misc2_temp &= ~PERRFATALENABLE_MASK; pcix_misc2_temp &= ~PERRNONFATALENABLE_MASK; pci_write_config_dword(p_slot->ctrl->pci_dev, PCIX_MISCII_OFFSET, pcix_misc2_temp); } static inline void amd_pogo_errata_restore_misc_reg(struct slot *p_slot) { u32 pcix_misc2_temp; u32 pcix_bridge_errors_reg; u32 pcix_mem_base_reg; u8 perr_set; u8 rse_set; /* write-one-to-clear Bridge_Errors[ PERR_OBSERVED ] */ pci_read_config_dword(p_slot->ctrl->pci_dev, PCIX_MISC_BRIDGE_ERRORS_OFFSET, &pcix_bridge_errors_reg); perr_set = pcix_bridge_errors_reg & PERR_OBSERVED_MASK; if (perr_set) { dbg ("%s W1C: Bridge_Errors[ PERR_OBSERVED = %08X]\n",__FUNCTION__ , perr_set); pci_write_config_dword(p_slot->ctrl->pci_dev, PCIX_MISC_BRIDGE_ERRORS_OFFSET, perr_set); } /* write-one-to-clear Memory_Base_Limit[ RSE ] */ pci_read_config_dword(p_slot->ctrl->pci_dev, PCIX_MEM_BASE_LIMIT_OFFSET, &pcix_mem_base_reg); rse_set = pcix_mem_base_reg & RSE_MASK; if (rse_set) { dbg ("%s W1C: Memory_Base_Limit[ RSE ]\n",__FUNCTION__ ); pci_write_config_dword(p_slot->ctrl->pci_dev, PCIX_MEM_BASE_LIMIT_OFFSET, rse_set); } /* restore MiscII register */ pci_read_config_dword( p_slot->ctrl->pci_dev, PCIX_MISCII_OFFSET, &pcix_misc2_temp ); if (p_slot->ctrl->pcix_misc2_reg & SERRFATALENABLE_MASK) pcix_misc2_temp |= SERRFATALENABLE_MASK; else pcix_misc2_temp &= ~SERRFATALENABLE_MASK; if (p_slot->ctrl->pcix_misc2_reg & SERRNONFATALENABLE_MASK) pcix_misc2_temp |= SERRNONFATALENABLE_MASK; else pcix_misc2_temp &= ~SERRNONFATALENABLE_MASK; if (p_slot->ctrl->pcix_misc2_reg & PERRFLOODENABLE_MASK) pcix_misc2_temp |= PERRFLOODENABLE_MASK; else pcix_misc2_temp &= ~PERRFLOODENABLE_MASK; if (p_slot->ctrl->pcix_misc2_reg & PERRFATALENABLE_MASK) pcix_misc2_temp |= PERRFATALENABLE_MASK; else pcix_misc2_temp &= ~PERRFATALENABLE_MASK; if (p_slot->ctrl->pcix_misc2_reg & PERRNONFATALENABLE_MASK) pcix_misc2_temp |= PERRNONFATALENABLE_MASK; else pcix_misc2_temp &= ~PERRNONFATALENABLE_MASK; pci_write_config_dword(p_slot->ctrl->pci_dev, PCIX_MISCII_OFFSET, pcix_misc2_temp); } enum php_ctlr_type { PCI, ISA, ACPI }; int shpc_init( struct controller *ctrl, struct pci_dev *pdev); 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 (*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 */