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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.h363
1 files changed, 117 insertions, 246 deletions
diff --git a/drivers/pci/hotplug/shpchp.h b/drivers/pci/hotplug/shpchp.h
index 7d6f521d02e..5897d516427 100644
--- a/drivers/pci/hotplug/shpchp.h
+++ b/drivers/pci/hotplug/shpchp.h
@@ -31,10 +31,11 @@
#include <linux/types.h>
#include <linux/pci.h>
+#include <linux/pci_hotplug.h>
#include <linux/delay.h>
#include <linux/sched.h> /* signal_pending(), struct timer_list */
-
-#include "pci_hotplug.h"
+#include <linux/mutex.h>
+#include <linux/workqueue.h>
#if !defined(MODULE)
#define MY_NAME "shpchp"
@@ -42,20 +43,38 @@
#define MY_NAME THIS_MODULE->name
#endif
-extern int shpchp_poll_mode;
+extern bool shpchp_poll_mode;
extern int shpchp_poll_time;
-extern int shpchp_debug;
+extern bool shpchp_debug;
+
+#define dbg(format, arg...) \
+do { \
+ if (shpchp_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 (shpchp_debug) \
+ dev_printk(KERN_DEBUG, &ctrl->pci_dev->dev, \
+ format, ## arg); \
+ } while (0)
+#define ctrl_err(ctrl, format, arg...) \
+ dev_err(&ctrl->pci_dev->dev, format, ## arg)
+#define ctrl_info(ctrl, format, arg...) \
+ dev_info(&ctrl->pci_dev->dev, format, ## arg)
+#define ctrl_warn(ctrl, format, arg...) \
+ dev_warn(&ctrl->pci_dev->dev, format, ## arg)
-/*#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
+#define SLOT_NAME_SIZE 10
struct slot {
- u32 magic;
- struct slot *next;
u8 bus;
u8 device;
u16 status;
@@ -64,60 +83,46 @@ struct slot {
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 delayed_work work; /* work for button event */
+ struct mutex lock;
+ struct workqueue_struct *wq;
+ u8 hp_slot;
};
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 */
- struct php_ctlr_state_s *hpc_ctlr_handle; /* HPC controller handle */
+ struct mutex crit_sect; /* critical section mutex */
+ struct mutex cmd_lock; /* command lock */
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 slot *slot;
+ 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;
+ void __iomem *creg;
+ struct timer_list poll_timer;
};
/* Define AMD SHPC ID */
-#define PCI_DEVICE_ID_AMD_GOLAM_7450 0x7450
+#define PCI_DEVICE_ID_AMD_GOLAM_7450 0x7450
#define PCI_DEVICE_ID_AMD_POGO_7458 0x7458
-/* AMD PCIX bridge registers */
-
+/* AMD PCI-X bridge registers */
#define PCIX_MEM_BASE_LIMIT_OFFSET 0x1C
#define PCIX_MISCII_OFFSET 0x48
#define PCIX_MISC_BRIDGE_ERRORS_OFFSET 0x80
@@ -152,8 +157,6 @@ struct hotplug_params {
#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
@@ -165,46 +168,35 @@ struct hotplug_params {
#define WRONG_BUS_FREQUENCY 0x0000000D
#define POWER_FAILURE 0x0000000E
-#define REMOVE_NOT_SUPPORTED 0x00000003
-
-#define DISABLE_CARD 1
+int __must_check shpchp_create_ctrl_files(struct controller *ctrl);
+void shpchp_remove_ctrl_files(struct controller *ctrl);
+int shpchp_sysfs_enable_slot(struct slot *slot);
+int shpchp_sysfs_disable_slot(struct slot *slot);
+u8 shpchp_handle_attention_button(u8 hp_slot, struct controller *ctrl);
+u8 shpchp_handle_switch_change(u8 hp_slot, struct controller *ctrl);
+u8 shpchp_handle_presence_change(u8 hp_slot, struct controller *ctrl);
+u8 shpchp_handle_power_fault(u8 hp_slot, struct controller *ctrl);
+int shpchp_configure_device(struct slot *p_slot);
+int shpchp_unconfigure_device(struct slot *p_slot);
+void cleanup_slots(struct controller *ctrl);
+void shpchp_queue_pushbutton_work(struct work_struct *work);
+int shpc_init(struct controller *ctrl, struct pci_dev *pdev);
+
+static inline const char *slot_name(struct slot *slot)
+{
+ return hotplug_slot_name(slot->hotplug_slot);
+}
-/*
- * 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 controller *shpchp_ctrl_list;
+#ifdef CONFIG_ACPI
+#include <linux/pci-acpi.h>
+static inline int get_hp_hw_control_from_firmware(struct pci_dev *dev)
+{
+ u32 flags = OSC_PCI_SHPC_NATIVE_HP_CONTROL;
+ return acpi_get_hp_hw_control_from_firmware(dev, flags);
+}
+#else
+#define get_hp_hw_control_from_firmware(dev) (0)
+#endif
struct ctrl_reg {
volatile u32 base_offset;
@@ -220,138 +212,41 @@ struct ctrl_reg {
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),
+ 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),
};
-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)
+static inline struct slot *get_slot(struct hotplug_slot *hotplug_slot)
{
- 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;
+ return hotplug_slot->private;
}
-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;
-
- while (p_slot && (p_slot->device != device)) {
- tmp_slot = p_slot;
- p_slot = p_slot->next;
- }
- 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)
+static inline struct slot *shpchp_find_slot(struct controller *ctrl, u8 device)
{
- DECLARE_WAITQUEUE(wait, current);
- int retval = 0;
-
- add_wait_queue(&ctrl->queue, &wait);
+ struct slot *slot;
- if (!shpchp_poll_mode) {
- /* Sleep for up to 1 second */
- msleep_interruptible(1000);
- } else {
- /* Sleep for up to 2 seconds */
- msleep_interruptible(2000);
+ list_for_each_entry(slot, &ctrl->slot_list, slot_list) {
+ if (slot->device == device)
+ return slot;
}
- remove_wait_queue(&ctrl->queue, &wait);
- if (signal_pending(current))
- retval = -EINTR;
- return retval;
+ ctrl_err(ctrl, "Slot (device=0x%02x) not found\n", device);
+ return NULL;
}
static inline void amd_pogo_errata_save_misc_reg(struct slot *p_slot)
@@ -384,7 +279,9 @@ static inline void amd_pogo_errata_restore_misc_reg(struct slot *p_slot)
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);
+ ctrl_dbg(p_slot->ctrl,
+ "Bridge_Errors[ PERR_OBSERVED = %08X] (W1C)\n",
+ perr_set);
pci_write_config_dword(p_slot->ctrl->pci_dev, PCIX_MISC_BRIDGE_ERRORS_OFFSET, perr_set);
}
@@ -393,12 +290,12 @@ static inline void amd_pogo_errata_restore_misc_reg(struct slot *p_slot)
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__ );
+ ctrl_dbg(p_slot->ctrl, "Memory_Base_Limit[ RSE ] (W1C)\n");
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 );
+ 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;
@@ -427,51 +324,25 @@ static inline void amd_pogo_errata_restore_misc_reg(struct slot *p_slot)
pci_write_config_dword(p_slot->ctrl->pci_dev, PCIX_MISCII_OFFSET, pcix_misc2_temp);
}
-#define SLOT_NAME_SIZE 10
-
-static inline void make_slot_name(char *buffer, int buffer_size, struct slot *slot)
-{
- snprintf(buffer, buffer_size, "%04d_%04d", slot->bus, slot->number);
-}
-
-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);
+ 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_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 */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-15 15:00:34 +0000