diff options
Diffstat (limited to 'drivers/misc/mei/mei_dev.h')
| -rw-r--r-- | drivers/misc/mei/mei_dev.h | 155 |
1 files changed, 126 insertions, 29 deletions
diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h index f7de95b4cdd..5c7e990e2f2 100644 --- a/drivers/misc/mei/mei_dev.h +++ b/drivers/misc/mei/mei_dev.h @@ -24,7 +24,6 @@ #include <linux/mei_cl_bus.h> #include "hw.h" -#include "hw-me-regs.h" #include "hbm.h" /* @@ -130,16 +129,18 @@ enum mei_wd_states { /** * enum mei_cb_file_ops - file operation associated with the callback - * @MEI_FOP_READ - read - * @MEI_FOP_WRITE - write - * @MEI_FOP_IOCTL - ioctl - * @MEI_FOP_OPEN - open - * @MEI_FOP_CLOSE - close + * @MEI_FOP_READ - read + * @MEI_FOP_WRITE - write + * @MEI_FOP_CONNECT - connect + * @MEI_FOP_DISCONNECT_RSP - disconnect response + * @MEI_FOP_OPEN - open + * @MEI_FOP_CLOSE - close */ enum mei_cb_file_ops { MEI_FOP_READ = 0, MEI_FOP_WRITE, - MEI_FOP_IOCTL, + MEI_FOP_CONNECT, + MEI_FOP_DISCONNECT_RSP, MEI_FOP_OPEN, MEI_FOP_CLOSE }; @@ -152,6 +153,20 @@ struct mei_msg_data { unsigned char *data; }; +/* Maximum number of processed FW status registers */ +#define MEI_FW_STATUS_MAX 2 + +/* + * struct mei_fw_status - storage of FW status data + * + * @count - number of actually available elements in array + * @status - FW status registers + */ +struct mei_fw_status { + int count; + u32 status[MEI_FW_STATUS_MAX]; +}; + /** * struct mei_me_client - representation of me (fw) client * @@ -212,6 +227,7 @@ struct mei_cl { /** struct mei_hw_ops * + * @fw_status - read FW status from PCI config space * @host_is_ready - query for host readiness * @hw_is_ready - query if hw is ready @@ -219,6 +235,9 @@ struct mei_cl { * @hw_start - start hw after reset * @hw_config - configure hw + * @pg_state - power gating state of the device + * @pg_is_enabled - is power gating enabled + * @intr_clear - clear pending interrupts * @intr_enable - enable interrupts * @intr_disable - disable interrupts @@ -236,20 +255,25 @@ struct mei_cl { */ struct mei_hw_ops { - bool (*host_is_ready) (struct mei_device *dev); + int (*fw_status)(struct mei_device *dev, + struct mei_fw_status *fw_status); + bool (*host_is_ready)(struct mei_device *dev); + + bool (*hw_is_ready)(struct mei_device *dev); + int (*hw_reset)(struct mei_device *dev, bool enable); + int (*hw_start)(struct mei_device *dev); + void (*hw_config)(struct mei_device *dev); - bool (*hw_is_ready) (struct mei_device *dev); - int (*hw_reset) (struct mei_device *dev, bool enable); - int (*hw_start) (struct mei_device *dev); - void (*hw_config) (struct mei_device *dev); + enum mei_pg_state (*pg_state)(struct mei_device *dev); + bool (*pg_is_enabled)(struct mei_device *dev); - void (*intr_clear) (struct mei_device *dev); - void (*intr_enable) (struct mei_device *dev); - void (*intr_disable) (struct mei_device *dev); + void (*intr_clear)(struct mei_device *dev); + void (*intr_enable)(struct mei_device *dev); + void (*intr_disable)(struct mei_device *dev); - int (*hbuf_free_slots) (struct mei_device *dev); - bool (*hbuf_is_ready) (struct mei_device *dev); - size_t (*hbuf_max_len) (const struct mei_device *dev); + int (*hbuf_free_slots)(struct mei_device *dev); + bool (*hbuf_is_ready)(struct mei_device *dev); + size_t (*hbuf_max_len)(const struct mei_device *dev); int (*write)(struct mei_device *dev, struct mei_msg_hdr *hdr, @@ -258,7 +282,7 @@ struct mei_hw_ops { int (*rdbuf_full_slots)(struct mei_device *dev); u32 (*read_hdr)(const struct mei_device *dev); - int (*read) (struct mei_device *dev, + int (*read)(struct mei_device *dev, unsigned char *buf, unsigned long len); }; @@ -294,6 +318,7 @@ int __mei_cl_async_send(struct mei_cl *cl, u8 *buf, size_t length); int __mei_cl_send(struct mei_cl *cl, u8 *buf, size_t length); int __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length); void mei_cl_bus_rx_event(struct mei_cl *cl); +void mei_cl_bus_remove_devices(struct mei_device *dev); int mei_cl_bus_init(void); void mei_cl_bus_exit(void); @@ -329,17 +354,61 @@ struct mei_cl_device { void *priv_data; }; + + /** + * enum mei_pg_event - power gating transition events + * + * @MEI_PG_EVENT_IDLE: the driver is not in power gating transition + * @MEI_PG_EVENT_WAIT: the driver is waiting for a pg event to complete + * @MEI_PG_EVENT_RECEIVED: the driver received pg event + */ +enum mei_pg_event { + MEI_PG_EVENT_IDLE, + MEI_PG_EVENT_WAIT, + MEI_PG_EVENT_RECEIVED, +}; + +/** + * enum mei_pg_state - device internal power gating state + * + * @MEI_PG_OFF: device is not power gated - it is active + * @MEI_PG_ON: device is power gated - it is in lower power state + */ +enum mei_pg_state { + MEI_PG_OFF = 0, + MEI_PG_ON = 1, +}; + +/* + * mei_cfg + * + * @fw_status - FW status + * @quirk_probe - device exclusion quirk + */ +struct mei_cfg { + const struct mei_fw_status fw_status; + bool (*quirk_probe)(struct pci_dev *pdev); +}; + + +#define MEI_PCI_DEVICE(dev, cfg) \ + .vendor = PCI_VENDOR_ID_INTEL, .device = (dev), \ + .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID, \ + .driver_data = (kernel_ulong_t)&(cfg) + + /** * struct mei_device - MEI private device struct * @reset_count - limits the number of consecutive resets * @hbm_state - state of host bus message protocol + * @pg_event - power gating event * @mem_addr - mem mapped base register address * @hbuf_depth - depth of hardware host/write buffer is slots * @hbuf_is_ready - query if the host host/write buffer is ready * @wr_msg - the buffer for hbm control messages - * @wr_ext_msg - the buffer for hbm control responses (set in read cycle) + * @cfg - per device generation config and ops */ struct mei_device { struct pci_dev *pdev; /* pointer to pci device struct */ @@ -370,6 +439,7 @@ struct mei_device { * waiting queue for receive message from FW */ wait_queue_head_t wait_hw_ready; + wait_queue_head_t wait_pg; wait_queue_head_t wait_recvd_msg; wait_queue_head_t wait_stop_wd; @@ -381,6 +451,14 @@ struct mei_device { enum mei_hbm_state hbm_state; u16 init_clients_timer; + /* + * Power Gating support + */ + enum mei_pg_event pg_event; +#ifdef CONFIG_PM_RUNTIME + struct dev_pm_domain pg_domain; +#endif /* CONFIG_PM_RUNTIME */ + unsigned char rd_msg_buf[MEI_RD_MSG_BUF_SIZE]; /* control messages */ u32 rd_msg_hdr; @@ -394,11 +472,6 @@ struct mei_device { unsigned char data[128]; } wr_msg; - struct { - struct mei_msg_hdr hdr; - unsigned char data[4]; /* All HBM messages are 4 bytes */ - } wr_ext_msg; /* for control responses */ - struct hbm_version version; struct mei_me_client *me_clients; /* Note: memory has to be allocated */ @@ -446,6 +519,7 @@ struct mei_device { const struct mei_hw_ops *ops; + const struct mei_cfg *cfg; char hw[0] __aligned(sizeof(void *)); }; @@ -478,7 +552,7 @@ static inline u32 mei_slots2data(int slots) /* * mei init function prototypes */ -void mei_device_init(struct mei_device *dev); +void mei_device_init(struct mei_device *dev, const struct mei_cfg *cfg); int mei_reset(struct mei_device *dev); int mei_start(struct mei_device *dev); int mei_restart(struct mei_device *dev); @@ -518,8 +592,8 @@ struct mei_cl_cb *mei_amthif_find_read_list_entry(struct mei_device *dev, void mei_amthif_run_next_cmd(struct mei_device *dev); -int mei_amthif_irq_write_complete(struct mei_cl *cl, struct mei_cl_cb *cb, - s32 *slots, struct mei_cl_cb *cmpl_list); +int mei_amthif_irq_write(struct mei_cl *cl, struct mei_cl_cb *cb, + struct mei_cl_cb *cmpl_list); void mei_amthif_complete(struct mei_device *dev, struct mei_cl_cb *cb); int mei_amthif_irq_read_msg(struct mei_device *dev, @@ -546,7 +620,7 @@ int mei_wd_host_init(struct mei_device *dev); * once we got connection to the WD Client * @dev - mei device */ -void mei_watchdog_register(struct mei_device *dev); +int mei_watchdog_register(struct mei_device *dev); /* * mei_watchdog_unregister - Unregistering watchdog interface * @dev - mei device @@ -557,10 +631,22 @@ void mei_watchdog_unregister(struct mei_device *dev); * Register Access Function */ + static inline void mei_hw_config(struct mei_device *dev) { dev->ops->hw_config(dev); } + +static inline enum mei_pg_state mei_pg_state(struct mei_device *dev) +{ + return dev->ops->pg_state(dev); +} + +static inline bool mei_pg_is_enabled(struct mei_device *dev) +{ + return dev->ops->pg_is_enabled(dev); +} + static inline int mei_hw_reset(struct mei_device *dev, bool enable) { return dev->ops->hw_reset(dev, enable); @@ -633,6 +719,17 @@ static inline int mei_count_full_read_slots(struct mei_device *dev) return dev->ops->rdbuf_full_slots(dev); } +int mei_fw_status(struct mei_device *dev, struct mei_fw_status *fw_status); + +#define FW_STS_FMT "%08X %08X" +#define FW_STS_PRM(fw_status) \ + (fw_status).count > 0 ? (fw_status).status[0] : 0xDEADBEEF, \ + (fw_status).count > 1 ? (fw_status).status[1] : 0xDEADBEEF + +bool mei_hbuf_acquire(struct mei_device *dev); + +bool mei_write_is_idle(struct mei_device *dev); + #if IS_ENABLED(CONFIG_DEBUG_FS) int mei_dbgfs_register(struct mei_device *dev, const char *name); void mei_dbgfs_deregister(struct mei_device *dev); |