diff options
Diffstat (limited to 'drivers/pci/hotplug/pciehp.h')
| -rw-r--r-- | drivers/pci/hotplug/pciehp.h | 375 |
1 files changed, 104 insertions, 271 deletions
diff --git a/drivers/pci/hotplug/pciehp.h b/drivers/pci/hotplug/pciehp.h index 2b92b9e8c91..8e9012dca45 100644 --- a/drivers/pci/hotplug/pciehp.h +++ b/drivers/pci/hotplug/pciehp.h @@ -31,120 +31,73 @@ #include <linux/types.h> #include <linux/pci.h> +#include <linux/pci_hotplug.h> #include <linux/delay.h> -#include <asm/semaphore.h> -#include <asm/io.h> +#include <linux/sched.h> /* signal_pending() */ #include <linux/pcieport_if.h> -#include "pci_hotplug.h" +#include <linux/mutex.h> +#include <linux/workqueue.h> #define MY_NAME "pciehp" -extern int pciehp_poll_mode; +extern bool pciehp_poll_mode; extern int pciehp_poll_time; -extern int pciehp_debug; - -/*#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; -}; +extern bool pciehp_debug; + +#define dbg(format, arg...) \ +do { \ + if (pciehp_debug) \ + printk(KERN_DEBUG "%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 ctrl_dbg(ctrl, format, arg...) \ + do { \ + if (pciehp_debug) \ + dev_printk(KERN_DEBUG, &ctrl->pcie->device, \ + format, ## arg); \ + } while (0) +#define ctrl_err(ctrl, format, arg...) \ + dev_err(&ctrl->pcie->device, format, ## arg) +#define ctrl_info(ctrl, format, arg...) \ + dev_info(&ctrl->pcie->device, format, ## arg) +#define ctrl_warn(ctrl, format, arg...) \ + dev_warn(&ctrl->pcie->device, format, ## arg) +#define SLOT_NAME_SIZE 10 struct slot { - 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 delayed_work work; /* work for button event */ + struct mutex lock; + struct mutex hotplug_lock; + struct workqueue_struct *wq; }; struct event_info { u32 event_type; - u8 hp_slot; + struct slot *p_slot; + struct work_struct work; }; 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 mutex ctrl_lock; /* controller lock */ + struct pcie_device *pcie; /* PCI Express port service */ 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 */ /* PCIE only has 1 slot */ - u8 slot_bus; /* Bus where the slots handled by this controller sit */ - u8 ctrlcap; - u16 vendor_id; - u8 cap_base; -}; - -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; + u32 slot_cap; + struct timer_list poll_timer; + unsigned int cmd_busy:1; + unsigned int no_cmd_complete:1; + unsigned int link_active_reporting:1; + unsigned int notification_enabled:1; + unsigned int power_fault_detected; }; #define INT_BUTTON_IGNORE 0 @@ -157,6 +110,8 @@ struct resource_lists { #define INT_BUTTON_PRESS 7 #define INT_BUTTON_RELEASE 8 #define INT_BUTTON_CANCEL 9 +#define INT_LINK_UP 10 +#define INT_LINK_DOWN 11 #define STATIC_STATE 0 #define BLINKINGON_STATE 1 @@ -164,190 +119,68 @@ struct resource_lists { #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 - -/* Field definitions in Slot Capabilities Register */ -#define ATTN_BUTTN_PRSN 0x00000001 -#define PWR_CTRL_PRSN 0x00000002 -#define MRL_SENS_PRSN 0x00000004 -#define ATTN_LED_PRSN 0x00000008 -#define PWR_LED_PRSN 0x00000010 -#define HP_SUPR_RM_SUP 0x00000020 - -#define ATTN_BUTTN(cap) (cap & ATTN_BUTTN_PRSN) -#define POWER_CTRL(cap) (cap & PWR_CTRL_PRSN) -#define MRL_SENS(cap) (cap & MRL_SENS_PRSN) -#define ATTN_LED(cap) (cap & ATTN_LED_PRSN) -#define PWR_LED(cap) (cap & PWR_LED_PRSN) -#define HP_SUPR_RM(cap) (cap & HP_SUPR_RM_SUP) - -/* - * 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 module. 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 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_get_bus_dev (struct controller *ctrl, u8 *bus_num, u8 *dev_num, struct slot *slot);*/ -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 */ - -static inline struct slot *pciehp_find_slot(struct controller *ctrl, u8 device) +#define ATTN_BUTTN(ctrl) ((ctrl)->slot_cap & PCI_EXP_SLTCAP_ABP) +#define POWER_CTRL(ctrl) ((ctrl)->slot_cap & PCI_EXP_SLTCAP_PCP) +#define MRL_SENS(ctrl) ((ctrl)->slot_cap & PCI_EXP_SLTCAP_MRLSP) +#define ATTN_LED(ctrl) ((ctrl)->slot_cap & PCI_EXP_SLTCAP_AIP) +#define PWR_LED(ctrl) ((ctrl)->slot_cap & PCI_EXP_SLTCAP_PIP) +#define HP_SUPR_RM(ctrl) ((ctrl)->slot_cap & PCI_EXP_SLTCAP_HPS) +#define EMI(ctrl) ((ctrl)->slot_cap & PCI_EXP_SLTCAP_EIP) +#define NO_CMD_CMPL(ctrl) ((ctrl)->slot_cap & PCI_EXP_SLTCAP_NCCS) +#define PSN(ctrl) (((ctrl)->slot_cap & PCI_EXP_SLTCAP_PSN) >> 19) + +int pciehp_sysfs_enable_slot(struct slot *slot); +int pciehp_sysfs_disable_slot(struct slot *slot); +u8 pciehp_handle_attention_button(struct slot *p_slot); +u8 pciehp_handle_switch_change(struct slot *p_slot); +u8 pciehp_handle_presence_change(struct slot *p_slot); +u8 pciehp_handle_power_fault(struct slot *p_slot); +void pciehp_handle_linkstate_change(struct slot *p_slot); +int pciehp_configure_device(struct slot *p_slot); +int pciehp_unconfigure_device(struct slot *p_slot); +void pciehp_queue_pushbutton_work(struct work_struct *work); +struct controller *pcie_init(struct pcie_device *dev); +int pcie_init_notification(struct controller *ctrl); +int pciehp_enable_slot(struct slot *p_slot); +int pciehp_disable_slot(struct slot *p_slot); +void pcie_enable_notification(struct controller *ctrl); +int pciehp_power_on_slot(struct slot *slot); +void pciehp_power_off_slot(struct slot *slot); +void pciehp_get_power_status(struct slot *slot, u8 *status); +void pciehp_get_attention_status(struct slot *slot, u8 *status); + +void pciehp_set_attention_status(struct slot *slot, u8 status); +void pciehp_get_latch_status(struct slot *slot, u8 *status); +void pciehp_get_adapter_status(struct slot *slot, u8 *status); +int pciehp_query_power_fault(struct slot *slot); +void pciehp_green_led_on(struct slot *slot); +void pciehp_green_led_off(struct slot *slot); +void pciehp_green_led_blink(struct slot *slot); +int pciehp_check_link_status(struct controller *ctrl); +bool pciehp_check_link_active(struct controller *ctrl); +void pciehp_release_ctrl(struct controller *ctrl); +int pciehp_reset_slot(struct slot *slot, int probe); + +static inline const char *slot_name(struct slot *slot) { - struct slot *p_slot, *tmp_slot = 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; + return hotplug_slot_name(slot->hotplug_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); - if (!pciehp_poll_mode) - /* Sleep for up to 1 second */ - msleep_interruptible(1000); - else - msleep_interruptible(2500); - - remove_wait_queue(&ctrl->queue, &wait); - if (signal_pending(current)) - retval = -EINTR; +#ifdef CONFIG_ACPI +#include <linux/pci-acpi.h> - dbg("%s : end\n", __FUNCTION__); - return retval; -} +void __init pciehp_acpi_slot_detection_init(void); +int pciehp_acpi_slot_detection_check(struct pci_dev *dev); -/* Puts node back in the resource list pointed to by head */ -static inline void return_resource(struct pci_resource **head, struct pci_resource *node) +static inline void pciehp_firmware_init(void) { - if (!node || !head) - return; - node->next = *head; - *head = node; + pciehp_acpi_slot_detection_init(); } - -#define SLOT_NAME_SIZE 10 - -static inline void make_slot_name(char *buffer, int buffer_size, struct slot *slot) +#else +#define pciehp_firmware_init() do {} while (0) +static inline int pciehp_acpi_slot_detection_check(struct pci_dev *dev) { - snprintf(buffer, buffer_size, "%d", slot->number); + return 0; } - -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 pcie_device *dev, - 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, - u8 *ctrlcap); - -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 /* CONFIG_ACPI */ #endif /* _PCIEHP_H */ |