Update usb host driver as in Axis SDK2.20

SVN-Revision: 14409

target/linux/etrax/files/drivers/usb/host/hc-crisv10.h

@@ -4,131 +4,175 @@
 #include <linux/types.h>
 #include <linux/list.h>
 
-typedef struct USB_IN_Desc {
-	volatile __u16 sw_len;
-	volatile __u16 command;
-	volatile unsigned long next;
-	volatile unsigned long buf;
-	volatile __u16 hw_len;
-	volatile __u16 status;
-} USB_IN_Desc_t;
-
-typedef struct USB_SB_Desc {
-	volatile __u16 sw_len;
-	volatile __u16 command;
-	volatile unsigned long next;
-	volatile unsigned long buf;
-	__u32 dummy;
-} USB_SB_Desc_t;
-
-typedef struct USB_EP_Desc {
-	volatile __u16 hw_len;
-	volatile __u16 command;
-	volatile unsigned long sub;
-	volatile unsigned long next;
-	__u32 dummy;
-} USB_EP_Desc_t;
-
-struct virt_root_hub {
-	int devnum;
-	void *urb;
-	void *int_addr;
-	int send;
-	int interval;
-	int numports;
-	struct timer_list rh_int_timer;
-	volatile __u16 wPortChange_1;
-	volatile __u16 wPortChange_2;
-	volatile __u16 prev_wPortStatus_1;
-	volatile __u16 prev_wPortStatus_2;
+struct USB_IN_Desc {
+  volatile __u16 sw_len;
+  volatile __u16 command;
+  volatile unsigned long next;
+  volatile unsigned long buf;
+  volatile __u16 hw_len;
+  volatile __u16 status;
 };
 
-struct etrax_usb_intr_traffic {
-	int sleeping;
-	int error;
-	struct wait_queue *wq;
+struct USB_SB_Desc {
+  volatile __u16 sw_len;
+  volatile __u16 command;
+  volatile unsigned long next;
+  volatile unsigned long buf;
+};
+
+struct USB_EP_Desc {
+  volatile __u16 hw_len;
+  volatile __u16 command;
+  volatile unsigned long sub;
+  volatile unsigned long next;
+};
+
+
+/* Root Hub port status struct */
+struct crisv10_rh {
+  volatile __u16 wPortChange[2];
+  volatile __u16 wPortStatusPrev[2];
+};
+
+/* HCD description */
+struct crisv10_hcd {
+  spinlock_t		lock;
+  __u8			num_ports;
+  __u8                  running;
+};
+
+
+/* Endpoint HC private data description */
+struct crisv10_ep_priv {
+  int epid;
+};
+
+/* Additional software state info for a USB Controller epid */
+struct etrax_epid {
+  __u8 inuse;       /* !0 = setup in Etrax and used for a endpoint */
+  __u8 disabled;    /* !0 = Temporarly disabled to avoid resubmission */
+  __u8 type;        /* Setup as: PIPE_BULK, PIPE_CONTROL ... */
+  __u8 out_traffic; /* !0 = This epid is for out traffic */
+};
+
+/* Struct to hold information of scheduled later URB completion */
+struct urb_later_data {
+  struct delayed_work dws;
+  struct usb_hcd *hcd;
+  struct urb *urb;
+  int urb_num;
+  int status;
 };
 
-typedef struct etrax_usb_hc {
-	struct usb_bus *bus;
-	struct virt_root_hub rh;
-	struct etrax_usb_intr_traffic intr;
-} etrax_hc_t;
 
 typedef enum {
-	STARTED,
-	NOT_STARTED,
-	UNLINK,
-	TRANSFER_DONE,
-	WAITING_FOR_DESCR_INTR
-} etrax_usb_urb_state_t;
-
-
-
-typedef struct etrax_usb_urb_priv {
-	/* The first_sb field is used for freeing all SB descriptors belonging
-	   to an urb. The corresponding ep descriptor's sub pointer cannot be
-	   used for this since the DMA advances the sub pointer as it processes
-	   the sb list. */
-	USB_SB_Desc_t *first_sb;
-	/* The last_sb field referes to the last SB descriptor that belongs to
-	   this urb. This is important to know so we can free the SB descriptors
-	   that ranges between first_sb and last_sb. */
-	USB_SB_Desc_t *last_sb;
-
-	/* The rx_offset field is used in ctrl and bulk traffic to keep track
-	   of the offset in the urb's transfer_buffer where incoming data should be
-	   copied to. */
-	__u32 rx_offset;
-
-	/* Counter used in isochronous transfers to keep track of the
-	   number of packets received/transmitted.  */
-	__u32 isoc_packet_counter;
-
-	/* This field is used to pass information about the urb's current state between
-	   the various interrupt handlers (thus marked volatile). */
-	volatile etrax_usb_urb_state_t urb_state;
-
-	/* Connection between the submitted urb and ETRAX epid number */
-	__u8 epid;
-
-	/* The rx_data_list field is used for periodic traffic, to hold
-	   received data for later processing in the the complete_urb functions,
-	   where the data us copied to the urb's transfer_buffer. Basically, we
-	   use this intermediate storage because we don't know when it's safe to
-	   reuse the transfer_buffer (FIXME?). */
-	struct list_head rx_data_list;
-} etrax_urb_priv_t;
-
-/* This struct is for passing data from the top half to the bottom half. */
-typedef struct usb_interrupt_registers
-{
-	etrax_hc_t *hc;
-	__u32 r_usb_epid_attn;
-	__u8 r_usb_status;
-	__u16 r_usb_rh_port_status_1;
-	__u16 r_usb_rh_port_status_2;
-	__u32 r_usb_irq_mask_read;
-	__u32 r_usb_fm_number;
-	struct work_struct usb_bh;
-} usb_interrupt_registers_t;
-
-/* This struct is for passing data from the isoc top half to the isoc bottom half. */
-typedef struct usb_isoc_complete_data
-{
-	struct urb *urb;
-	struct work_struct usb_bh;
-} usb_isoc_complete_data_t;
+  STARTED,
+  NOT_STARTED,
+  UNLINK,
+} crisv10_urb_state_t;
+
+
+struct crisv10_urb_priv {
+  /* Sequence number for this URB. Every new submited URB gets this from
+     a incrementing counter. Used when a URB is scheduled for later finish to
+     be sure that the intended URB hasn't already been completed (device
+     drivers has a tendency to reuse URBs once they are completed, causing us
+     to not be able to single old ones out only based on the URB pointer.) */
+  __u32 urb_num;
+
+  /* The first_sb field is used for freeing all SB descriptors belonging
+     to an urb. The corresponding ep descriptor's sub pointer cannot be
+     used for this since the DMA advances the sub pointer as it processes
+     the sb list. */
+  struct USB_SB_Desc *first_sb;
+
+  /* The last_sb field referes to the last SB descriptor that belongs to
+     this urb. This is important to know so we can free the SB descriptors
+     that ranges between first_sb and last_sb. */
+  struct USB_SB_Desc *last_sb;
+  
+  /* The rx_offset field is used in ctrl and bulk traffic to keep track
+     of the offset in the urb's transfer_buffer where incoming data should be
+     copied to. */
+  __u32 rx_offset;
+  
+  /* Counter used in isochronous transfers to keep track of the
+     number of packets received/transmitted.  */
+  __u32 isoc_packet_counter;
+
+  /* Flag that marks if this Isoc Out URB has finished it's transfer. Used
+     because several URBs can be finished before list is processed */
+  __u8  isoc_out_done;
+  
+  /* This field is used to pass information about the urb's current state
+     between the various interrupt handlers (thus marked volatile). */
+  volatile crisv10_urb_state_t urb_state;
+  
+  /* In Ctrl transfers consist of (at least) 3 packets: SETUP, IN and ZOUT.
+     When DMA8 sub-channel 2 has processed the SB list for this sequence we
+     get a interrupt. We also get a interrupt for In transfers and which
+     one of these interrupts that comes first depends of data size and device.
+     To be sure that we have got both interrupts before we complete the URB
+     we have these to flags that shows which part that has completed.
+     We can then check when we get one of the interrupts that if the other has
+     occured it's safe for us to complete the URB, otherwise we set appropriate
+     flag and do the completion when we get the other interrupt. */
+  volatile unsigned char ctrl_zout_done;
+  volatile unsigned char ctrl_rx_done;
+
+  /* Connection between the submitted urb and ETRAX epid number */
+  __u8 epid;
+  
+  /* The rx_data_list field is used for periodic traffic, to hold
+     received data for later processing in the the complete_urb functions,
+     where the data us copied to the urb's transfer_buffer. Basically, we
+     use this intermediate storage because we don't know when it's safe to
+     reuse the transfer_buffer (FIXME?). */
+  struct list_head rx_data_list;
+
+
+  /* The interval time rounded up to closest 2^N */
+  int interval;
+
+  /* Pool of EP descriptors needed if it's a INTR transfer.
+     Amount of EPs in pool correspons to how many INTR that should
+     be inserted in TxIntrEPList (max 128, defined by MAX_INTR_INTERVAL) */
+  struct USB_EP_Desc* intr_ep_pool[128];
+
+  /* The mount of EPs allocated for this INTR URB */
+  int intr_ep_pool_length;
+
+  /* Pointer to info struct if URB is scheduled to be finished later */
+  struct urb_later_data* later_data;
+
+  /* Allocated bandwidth for isochronous and interrupt traffic */
+  int bandwidth;
+};
 
-/* This struct holds data we get from the rx descriptors for DMA channel 9
-   for periodic traffic (intr and isoc). */
-typedef struct rx_data
-{
-	void *data;
-	int length;
-	struct list_head list;
-} rx_data_t;
 
+/* This struct is for passing data from the top half to the bottom half irq
+   handlers */
+struct crisv10_irq_reg {
+  struct usb_hcd* hcd;
+  __u32 r_usb_epid_attn;
+  __u8 r_usb_status;
+  __u16 r_usb_rh_port_status_1;
+  __u16 r_usb_rh_port_status_2;
+  __u32 r_usb_irq_mask_read;
+  __u32 r_usb_fm_number;
+  struct work_struct usb_bh;
+};
+
+
+/* This struct is for passing data from the isoc top half to the isoc bottom
+   half. */
+struct crisv10_isoc_complete_data {
+  struct usb_hcd *hcd;
+  struct urb *urb;
+  struct work_struct usb_bh;
+};
+
+/* Entry item for URB lists for each endpint */
 typedef struct urb_entry
 {
 	struct urb *urb;