brcm-message.h 1.2 KB

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  1. /*
  2. * Copyright (C) 2016 Broadcom
  3. *
  4. * This program is free software; you can redistribute it and/or modify
  5. * it under the terms of the GNU General Public License version 2 as
  6. * published by the Free Software Foundation.
  7. *
  8. * Common header for Broadcom mailbox messages which is shared across
  9. * Broadcom SoCs and Broadcom mailbox client drivers.
  10. */
  11. #ifndef _LINUX_BRCM_MESSAGE_H_
  12. #define _LINUX_BRCM_MESSAGE_H_
  13. #include <linux/scatterlist.h>
  14. enum brcm_message_type {
  15. BRCM_MESSAGE_UNKNOWN = 0,
  16. BRCM_MESSAGE_SPU,
  17. BRCM_MESSAGE_SBA,
  18. BRCM_MESSAGE_MAX,
  19. };
  20. struct brcm_sba_command {
  21. u64 cmd;
  22. #define BRCM_SBA_CMD_TYPE_A BIT(0)
  23. #define BRCM_SBA_CMD_TYPE_B BIT(1)
  24. #define BRCM_SBA_CMD_TYPE_C BIT(2)
  25. #define BRCM_SBA_CMD_HAS_RESP BIT(3)
  26. #define BRCM_SBA_CMD_HAS_OUTPUT BIT(4)
  27. u64 flags;
  28. dma_addr_t input;
  29. size_t input_len;
  30. dma_addr_t resp;
  31. size_t resp_len;
  32. dma_addr_t output;
  33. size_t output_len;
  34. };
  35. struct brcm_message {
  36. enum brcm_message_type type;
  37. union {
  38. struct {
  39. struct scatterlist *src;
  40. struct scatterlist *dst;
  41. } spu;
  42. struct {
  43. struct brcm_sba_command *cmds;
  44. unsigned int cmds_count;
  45. } sba;
  46. };
  47. void *ctx;
  48. int error;
  49. };
  50. #endif /* _LINUX_BRCM_MESSAGE_H_ */