diff options
Diffstat (limited to 'drivers/usb/host/xhci.h')
| -rw-r--r-- | drivers/usb/host/xhci.h | 113 |
1 files changed, 88 insertions, 25 deletions
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index d31d32206ba3..4b254b6fa245 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -509,6 +509,8 @@ struct xhci_slot_ctx { #define MAX_EXIT (0xffff) /* Root hub port number that is needed to access the USB device */ #define ROOT_HUB_PORT(p) (((p) & 0xff) << 16) +/* Maximum number of ports under a hub device */ +#define XHCI_MAX_PORTS(p) (((p) & 0xff) << 24) /* tt_info bitmasks */ /* @@ -522,6 +524,7 @@ struct xhci_slot_ctx { * '0' if the device is not low or full speed. */ #define TT_PORT (0xff << 8) +#define TT_THINK_TIME(p) (((p) & 0x3) << 16) /* dev_state bitmasks */ /* USB device address - assigned by the HC */ @@ -581,6 +584,7 @@ struct xhci_ep_ctx { /* bit 15 is Linear Stream Array */ /* Interval - period between requests to an endpoint - 125u increments. */ #define EP_INTERVAL(p) ((p & 0xff) << 16) +#define EP_INTERVAL_TO_UFRAMES(p) (1 << (((p) >> 16) & 0xff)) /* ep_info2 bitmasks */ /* @@ -589,6 +593,7 @@ struct xhci_ep_ctx { */ #define FORCE_EVENT (0x1) #define ERROR_COUNT(p) (((p) & 0x3) << 1) +#define CTX_TO_EP_TYPE(p) (((p) >> 3) & 0x7) #define EP_TYPE(p) ((p) << 3) #define ISOC_OUT_EP 1 #define BULK_OUT_EP 2 @@ -601,6 +606,8 @@ struct xhci_ep_ctx { /* bit 7 is Host Initiate Disable - for disabling stream selection */ #define MAX_BURST(p) (((p)&0xff) << 8) #define MAX_PACKET(p) (((p)&0xffff) << 16) +#define MAX_PACKET_MASK (0xffff << 16) +#define MAX_PACKET_DECODED(p) (((p) >> 16) & 0xffff) /** @@ -616,11 +623,44 @@ struct xhci_input_control_ctx { u32 rsvd2[6]; }; +/* Represents everything that is needed to issue a command on the command ring. + * It's useful to pre-allocate these for commands that cannot fail due to + * out-of-memory errors, like freeing streams. + */ +struct xhci_command { + /* Input context for changing device state */ + struct xhci_container_ctx *in_ctx; + u32 status; + /* If completion is null, no one is waiting on this command + * and the structure can be freed after the command completes. + */ + struct completion *completion; + union xhci_trb *command_trb; + struct list_head cmd_list; +}; + /* drop context bitmasks */ #define DROP_EP(x) (0x1 << x) /* add context bitmasks */ #define ADD_EP(x) (0x1 << x) +struct xhci_virt_ep { + struct xhci_ring *ring; + /* Temporary storage in case the configure endpoint command fails and we + * have to restore the device state to the previous state + */ + struct xhci_ring *new_ring; + unsigned int ep_state; +#define SET_DEQ_PENDING (1 << 0) +#define EP_HALTED (1 << 1) + /* ---- Related to URB cancellation ---- */ + struct list_head cancelled_td_list; + unsigned int cancels_pending; + /* The TRB that was last reported in a stopped endpoint ring */ + union xhci_trb *stopped_trb; + struct xhci_td *stopped_td; +}; + struct xhci_virt_device { /* * Commands to the hardware are passed an "input context" that @@ -633,16 +673,11 @@ struct xhci_virt_device { struct xhci_container_ctx *out_ctx; /* Used for addressing devices and configuration changes */ struct xhci_container_ctx *in_ctx; - - /* FIXME when stream support is added */ - struct xhci_ring *ep_rings[31]; - /* Temporary storage in case the configure endpoint command fails and we - * have to restore the device state to the previous state - */ - struct xhci_ring *new_ep_rings[31]; + struct xhci_virt_ep eps[31]; struct completion cmd_completion; /* Status of the last command issued for this device */ u32 cmd_status; + struct list_head cmd_list; }; @@ -905,6 +940,8 @@ union xhci_trb { * It must also be greater than 16. */ #define TRBS_PER_SEGMENT 64 +/* Allow two commands + a link TRB, along with any reserved command TRBs */ +#define MAX_RSVD_CMD_TRBS (TRBS_PER_SEGMENT - 3) #define SEGMENT_SIZE (TRBS_PER_SEGMENT*16) /* TRB buffer pointers can't cross 64KB boundaries */ #define TRB_MAX_BUFF_SHIFT 16 @@ -926,6 +963,12 @@ struct xhci_td { union xhci_trb *last_trb; }; +struct xhci_dequeue_state { + struct xhci_segment *new_deq_seg; + union xhci_trb *new_deq_ptr; + int new_cycle_state; +}; + struct xhci_ring { struct xhci_segment *first_seg; union xhci_trb *enqueue; @@ -935,15 +978,6 @@ struct xhci_ring { struct xhci_segment *deq_seg; unsigned int deq_updates; struct list_head td_list; - /* ---- Related to URB cancellation ---- */ - struct list_head cancelled_td_list; - unsigned int cancels_pending; - unsigned int state; -#define SET_DEQ_PENDING (1 << 0) -#define EP_HALTED (1 << 1) - /* The TRB that was last reported in a stopped endpoint ring */ - union xhci_trb *stopped_trb; - struct xhci_td *stopped_td; /* * Write the cycle state into the TRB cycle field to give ownership of * the TRB to the host controller (if we are the producer), or to check @@ -952,12 +986,6 @@ struct xhci_ring { u32 cycle_state; }; -struct xhci_dequeue_state { - struct xhci_segment *new_deq_seg; - union xhci_trb *new_deq_ptr; - int new_cycle_state; -}; - struct xhci_erst_entry { /* 64-bit event ring segment address */ u64 seg_addr; @@ -1034,6 +1062,7 @@ struct xhci_hcd { /* data structures */ struct xhci_device_context_array *dcbaa; struct xhci_ring *cmd_ring; + unsigned int cmd_ring_reserved_trbs; struct xhci_ring *event_ring; struct xhci_erst erst; /* Scratchpad */ @@ -1058,6 +1087,9 @@ struct xhci_hcd { int noops_submitted; int noops_handled; int error_bitmask; + unsigned int quirks; +#define XHCI_LINK_TRB_QUIRK (1 << 0) +#define XHCI_RESET_EP_QUIRK (1 << 1) }; /* For testing purposes */ @@ -1136,6 +1168,13 @@ static inline void xhci_write_64(struct xhci_hcd *xhci, writel(val_hi, ptr + 1); } +static inline int xhci_link_trb_quirk(struct xhci_hcd *xhci) +{ + u32 temp = xhci_readl(xhci, &xhci->cap_regs->hc_capbase); + return ((HC_VERSION(temp) == 0x95) && + (xhci->quirks & XHCI_LINK_TRB_QUIRK)); +} + /* xHCI debugging */ void xhci_print_ir_set(struct xhci_hcd *xhci, struct xhci_intr_reg *ir_set, int set_num); void xhci_print_registers(struct xhci_hcd *xhci); @@ -1150,7 +1189,7 @@ void xhci_dbg_cmd_ptrs(struct xhci_hcd *xhci); void xhci_dbg_ring_ptrs(struct xhci_hcd *xhci, struct xhci_ring *ring); void xhci_dbg_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx, unsigned int last_ep); -/* xHCI memory managment */ +/* xHCI memory management */ void xhci_mem_cleanup(struct xhci_hcd *xhci); int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags); void xhci_free_virt_device(struct xhci_hcd *xhci, int slot_id); @@ -1158,11 +1197,24 @@ int xhci_alloc_virt_device(struct xhci_hcd *xhci, int slot_id, struct usb_device int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *udev); unsigned int xhci_get_endpoint_index(struct usb_endpoint_descriptor *desc); unsigned int xhci_get_endpoint_flag(struct usb_endpoint_descriptor *desc); +unsigned int xhci_get_endpoint_flag_from_index(unsigned int ep_index); +unsigned int xhci_last_valid_endpoint(u32 added_ctxs); void xhci_endpoint_zero(struct xhci_hcd *xhci, struct xhci_virt_device *virt_dev, struct usb_host_endpoint *ep); +void xhci_endpoint_copy(struct xhci_hcd *xhci, + struct xhci_container_ctx *in_ctx, + struct xhci_container_ctx *out_ctx, + unsigned int ep_index); +void xhci_slot_copy(struct xhci_hcd *xhci, + struct xhci_container_ctx *in_ctx, + struct xhci_container_ctx *out_ctx); int xhci_endpoint_init(struct xhci_hcd *xhci, struct xhci_virt_device *virt_dev, struct usb_device *udev, struct usb_host_endpoint *ep, gfp_t mem_flags); void xhci_ring_free(struct xhci_hcd *xhci, struct xhci_ring *ring); +struct xhci_command *xhci_alloc_command(struct xhci_hcd *xhci, + bool allocate_completion, gfp_t mem_flags); +void xhci_free_command(struct xhci_hcd *xhci, + struct xhci_command *command); #ifdef CONFIG_PCI /* xHCI PCI glue */ @@ -1182,6 +1234,8 @@ irqreturn_t xhci_irq(struct usb_hcd *hcd); int xhci_alloc_dev(struct usb_hcd *hcd, struct usb_device *udev); void xhci_free_dev(struct usb_hcd *hcd, struct usb_device *udev); int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev); +int xhci_update_hub_device(struct usb_hcd *hcd, struct usb_device *hdev, + struct usb_tt *tt, gfp_t mem_flags); int xhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags); int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status); int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev, struct usb_host_endpoint *ep); @@ -1205,7 +1259,11 @@ int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags, struct urb *urb, int slot_id, unsigned int ep_index); int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags, struct urb *urb, int slot_id, unsigned int ep_index); +int xhci_queue_intr_tx(struct xhci_hcd *xhci, gfp_t mem_flags, struct urb *urb, + int slot_id, unsigned int ep_index); int xhci_queue_configure_endpoint(struct xhci_hcd *xhci, dma_addr_t in_ctx_ptr, + u32 slot_id, bool command_must_succeed); +int xhci_queue_evaluate_context(struct xhci_hcd *xhci, dma_addr_t in_ctx_ptr, u32 slot_id); int xhci_queue_reset_ep(struct xhci_hcd *xhci, int slot_id, unsigned int ep_index); @@ -1213,8 +1271,13 @@ void xhci_find_new_dequeue_state(struct xhci_hcd *xhci, unsigned int slot_id, unsigned int ep_index, struct xhci_td *cur_td, struct xhci_dequeue_state *state); void xhci_queue_new_dequeue_state(struct xhci_hcd *xhci, - struct xhci_ring *ep_ring, unsigned int slot_id, - unsigned int ep_index, struct xhci_dequeue_state *deq_state); + unsigned int slot_id, unsigned int ep_index, + struct xhci_dequeue_state *deq_state); +void xhci_cleanup_stalled_ring(struct xhci_hcd *xhci, + struct usb_device *udev, unsigned int ep_index); +void xhci_queue_config_ep_quirk(struct xhci_hcd *xhci, + unsigned int slot_id, unsigned int ep_index, + struct xhci_dequeue_state *deq_state); /* xHCI roothub code */ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex, |