/drivers/usb/renesas_usbhs/fifo.h

https://bitbucket.org/cyanogenmod/android_kernel_asus_tf300t · C Header · 104 lines · 65 code · 17 blank · 22 comment · 0 complexity · 76d1deadd4921e22ed0ecf0d9bb56265 MD5 · raw file 

    

  1. /*
    2. 

  2.  * Renesas USB driver
    3. 

  3.  *
    4. 

  4.  * Copyright (C) 2011 Renesas Solutions Corp.
    5. 

  5.  * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
    6. 

  6.  *
    7. 

  7.  * This program is distributed in the hope that it will be useful,
    8. 

  8.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    9. 

  9.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    10. 

  10.  * GNU General Public License for more details.
    11. 

  11.  *
    12. 

  12.  * You should have received a copy of the GNU General Public License
    13. 

  13.  * along with this program; if not, write to the Free Software
    14. 

  14.  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
    15. 

  15.  *
    16. 

  16.  */
    17. 

  17. #ifndef RENESAS_USB_FIFO_H
    18. 

  18. #define RENESAS_USB_FIFO_H
    19. 

  19. 

  20. #include <linux/interrupt.h>
    21. 

  21. #include <linux/sh_dma.h>
    22. 

  22. #include <asm/dma.h>
    23. 

  23. #include "pipe.h"
    24. 

  24. 

  25. #define	DMA_ADDR_INVALID	(~(dma_addr_t)0)
    26. 

  26. 

  27. struct usbhs_fifo {
    28. 

  28. 	char *name;
    29. 

  29. 	u32 port;	/* xFIFO */
    30. 

  30. 	u32 sel;	/* xFIFOSEL */
    31. 

  31. 	u32 ctr;	/* xFIFOCTR */
    32. 

  32. 

  33. 	struct usbhs_pipe	*pipe;
    34. 

  34. 	struct tasklet_struct	tasklet;
    35. 

  35. 

  36. 	struct dma_chan		*tx_chan;
    37. 

  37. 	struct dma_chan		*rx_chan;
    38. 

  38. 

  39. 	struct sh_dmae_slave	tx_slave;
    40. 

  40. 	struct sh_dmae_slave	rx_slave;
    41. 

  41. };
    42. 

  42. 

  43. struct usbhs_fifo_info {
    44. 

  44. 	struct usbhs_fifo cfifo;
    45. 

  45. 	struct usbhs_fifo d0fifo;
    46. 

  46. 	struct usbhs_fifo d1fifo;
    47. 

  47. };
    48. 

  48. 

  49. struct usbhs_pkt_handle;
    50. 

  50. struct usbhs_pkt {
    51. 

  51. 	struct list_head node;
    52. 

  52. 	struct usbhs_pipe *pipe;
    53. 

  53. 	struct usbhs_pkt_handle *handler;
    54. 

  54. 	dma_addr_t dma;
    55. 

  55. 	void *buf;
    56. 

  56. 	int length;
    57. 

  57. 	int trans;
    58. 

  58. 	int actual;
    59. 

  59. 	int zero;
    60. 

  60. };
    61. 

  61. 

  62. struct usbhs_pkt_handle {
    63. 

  63. 	int (*prepare)(struct usbhs_pkt *pkt, int *is_done);
    64. 

  64. 	int (*try_run)(struct usbhs_pkt *pkt, int *is_done);
    65. 

  65. 	int (*dma_done)(struct usbhs_pkt *pkt, int *is_done);
    66. 

  66. };
    67. 

  67. 

  68. /*
    69. 

  69.  * fifo
    70. 

  70.  */
    71. 

  71. int usbhs_fifo_probe(struct usbhs_priv *priv);
    72. 

  72. void usbhs_fifo_remove(struct usbhs_priv *priv);
    73. 

  73. void usbhs_fifo_init(struct usbhs_priv *priv);
    74. 

  74. void usbhs_fifo_quit(struct usbhs_priv *priv);
    75. 

  75. 

  76. /*
    77. 

  77.  * packet info
    78. 

  78.  */
    79. 

  79. enum {
    80. 

  80. 	USBHSF_PKT_PREPARE,
    81. 

  81. 	USBHSF_PKT_TRY_RUN,
    82. 

  82. 	USBHSF_PKT_DMA_DONE,
    83. 

  83. };
    84. 

  84. 

  85. extern struct usbhs_pkt_handle usbhs_fifo_pio_push_handler;
    86. 

  86. extern struct usbhs_pkt_handle usbhs_fifo_pio_pop_handler;
    87. 

  87. extern struct usbhs_pkt_handle usbhs_ctrl_stage_end_handler;
    88. 

  88. 

  89. extern struct usbhs_pkt_handle usbhs_fifo_dma_push_handler;
    90. 

  90. extern struct usbhs_pkt_handle usbhs_fifo_dma_pop_handler;
    91. 

  91. 

  92. 

  93. void usbhs_pkt_init(struct usbhs_pkt *pkt);
    94. 

  94. void usbhs_pkt_push(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt,
    95. 

  95. 		    struct usbhs_pkt_handle *handler,
    96. 

  96. 		    void *buf, int len, int zero);
    97. 

  97. struct usbhs_pkt *usbhs_pkt_pop(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt);
    98. 

  98. int __usbhs_pkt_handler(struct usbhs_pipe *pipe, int type);
    99. 

  99. 

  100. #define usbhs_pkt_start(p)	__usbhs_pkt_handler(p, USBHSF_PKT_PREPARE)
    101. 

  101. #define usbhs_pkt_run(p)	__usbhs_pkt_handler(p, USBHSF_PKT_TRY_RUN)
    102. 

  102. #define usbhs_pkt_dmadone(p)	__usbhs_pkt_handler(p, USBHSF_PKT_DMA_DONE)
    103. 

  103. 

  104. #endif /* RENESAS_USB_FIFO_H */
    105.