kernel/drivers/usb/renesas_usbhs/pipe.h

   1 /*
   2  * Renesas USB driver
   3  *
   4  * Copyright (C) 2011 Renesas Solutions Corp.
   5  * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
   6  *
   7  * This program is distributed in the hope that it will be useful,
   8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10  * GNU General Public License for more details.
  11  *
  12  * You should have received a copy of the GNU General Public License
  13  * along with this program; if not, write to the Free Software
  14  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  15  *
  16  */
  17 #ifndef RENESAS_USB_PIPE_H
  18 #define RENESAS_USB_PIPE_H
  19
  20 #include "common.h"
  21 #include "fifo.h"
  22
  23 /*
  24  *      struct
  25  */
  26 struct usbhs_pipe {
  27         u32 pipe_type;  /* USB_ENDPOINT_XFER_xxx */
  28
  29         struct usbhs_priv *priv;
  30         struct usbhs_fifo *fifo;
  31         struct list_head list;
  32
  33         int maxp;
  34
  35         u32 flags;
  36 #define USBHS_PIPE_FLAGS_IS_USED                (1 << 0)
  37 #define USBHS_PIPE_FLAGS_IS_DIR_IN              (1 << 1)
  38 #define USBHS_PIPE_FLAGS_IS_DIR_HOST            (1 << 2)
  39 #define USBHS_PIPE_FLAGS_IS_RUNNING             (1 << 3)
  40
  41         struct usbhs_pkt_handle *handler;
  42
  43         void *mod_private;
  44 };
  45
  46 struct usbhs_pipe_info {
  47         struct usbhs_pipe *pipe;
  48         int size;       /* array size of "pipe" */
  49         int bufnmb_last;        /* FIXME : driver needs good allocator */
  50
  51         int (*dma_map_ctrl)(struct usbhs_pkt *pkt, int map);
  52 };
  53
  54 /*
  55  * pipe list
  56  */
  57 #define __usbhs_for_each_pipe(start, pos, info, i)      \
  58         for ((i) = start;                                               \
  59              ((i) < (info)->size) && ((pos) = (info)->pipe + (i));      \
  60              (i)++)
  61
  62 #define usbhs_for_each_pipe(pos, priv, i)                       \
  63         __usbhs_for_each_pipe(1, pos, &((priv)->pipe_info), i)
  64
  65 #define usbhs_for_each_pipe_with_dcp(pos, priv, i)              \
  66         __usbhs_for_each_pipe(0, pos, &((priv)->pipe_info), i)
  67
  68 /*
  69  * data
  70  */
  71 #define usbhs_priv_to_pipeinfo(pr)      (&(pr)->pipe_info)
  72
  73 /*
  74  * pipe control
  75  */
  76 char *usbhs_pipe_name(struct usbhs_pipe *pipe);
  77 struct usbhs_pipe
  78 *usbhs_pipe_malloc(struct usbhs_priv *priv, int endpoint_type, int dir_in);
  79 void usbhs_pipe_free(struct usbhs_pipe *pipe);
  80 int usbhs_pipe_probe(struct usbhs_priv *priv);
  81 void usbhs_pipe_remove(struct usbhs_priv *priv);
  82 int usbhs_pipe_is_dir_in(struct usbhs_pipe *pipe);
  83 int usbhs_pipe_is_dir_host(struct usbhs_pipe *pipe);
  84 int usbhs_pipe_is_running(struct usbhs_pipe *pipe);
  85 void usbhs_pipe_running(struct usbhs_pipe *pipe, int running);
  86
  87 void usbhs_pipe_init(struct usbhs_priv *priv,
  88                      int (*dma_map_ctrl)(struct usbhs_pkt *pkt, int map));
  89 int usbhs_pipe_get_maxpacket(struct usbhs_pipe *pipe);
  90 void usbhs_pipe_clear(struct usbhs_pipe *pipe);
  91 int usbhs_pipe_is_accessible(struct usbhs_pipe *pipe);
  92 void usbhs_pipe_enable(struct usbhs_pipe *pipe);
  93 void usbhs_pipe_disable(struct usbhs_pipe *pipe);
  94 void usbhs_pipe_stall(struct usbhs_pipe *pipe);
  95 int usbhs_pipe_is_stall(struct usbhs_pipe *pipe);
  96 void usbhs_pipe_set_trans_count_if_bulk(struct usbhs_pipe *pipe, int len);
  97 void usbhs_pipe_select_fifo(struct usbhs_pipe *pipe, struct usbhs_fifo *fifo);
  98 void usbhs_pipe_config_update(struct usbhs_pipe *pipe, u16 devsel,
  99                               u16 epnum, u16 maxp);
 100 void usbhs_pipe_config_change_bfre(struct usbhs_pipe *pipe, int enable);
 101
 102 #define usbhs_pipe_sequence_data0(pipe) usbhs_pipe_data_sequence(pipe, 0)
 103 #define usbhs_pipe_sequence_data1(pipe) usbhs_pipe_data_sequence(pipe, 1)
 104 void usbhs_pipe_data_sequence(struct usbhs_pipe *pipe, int data);
 105
 106 #define usbhs_pipe_to_priv(p)   ((p)->priv)
 107 #define usbhs_pipe_number(p)    (int)((p) - (p)->priv->pipe_info.pipe)
 108 #define usbhs_pipe_is_dcp(p)    ((p)->priv->pipe_info.pipe == (p))
 109 #define usbhs_pipe_to_fifo(p)   ((p)->fifo)
 110 #define usbhs_pipe_is_busy(p)   usbhs_pipe_to_fifo(p)
 111
 112 #define usbhs_pipe_type(p)              ((p)->pipe_type)
 113 #define usbhs_pipe_type_is(p, t)        ((p)->pipe_type == t)
 114
 115 /*
 116  * dcp control
 117  */
 118 struct usbhs_pipe *usbhs_dcp_malloc(struct usbhs_priv *priv);
 119 void usbhs_dcp_control_transfer_done(struct usbhs_pipe *pipe);
 120 void usbhs_dcp_dir_for_host(struct usbhs_pipe *pipe, int dir_out);
 121
 122 #endif /* RENESAS_USB_PIPE_H */