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samsung-sm8650
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android_kernel_samsung_sm8650_ksu
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android_kernel_...
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drivers
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net
/
ipa
/
ipa_qmi.h

ipa_qmi.h 2.0 KB
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  1. /* SPDX-License-Identifier: GPL-2.0 */
    2. 

  2. 

  3. /* Copyright (c) 2018, The Linux Foundation. All rights reserved.
    4. 

  4.  * Copyright (C) 2018-2022 Linaro Ltd.
    5. 

  5.  */
    6. 

  6. #ifndef _IPA_QMI_H_
    7. 

  7. #define _IPA_QMI_H_
    8. 

  8. 

  9. #include <linux/types.h>
    10. 

  10. #include <linux/soc/qcom/qmi.h>
    11. 

  11. 

  12. struct ipa;
    13. 

  13. 

  14. /**
    15. 

  15.  * struct ipa_qmi - QMI state associated with an IPA
    16. 

  16.  * @client_handle:	Used to send an QMI requests to the modem
    17. 

  17.  * @server_handle:	Used to handle QMI requests from the modem
    18. 

  18.  * @modem_sq:		QMAP socket address for the modem QMI server
    19. 

  19.  * @init_driver_work:	Work structure used for INIT_DRIVER message handling
    20. 

  20.  * @initial_boot:	True if first boot has not yet completed
    21. 

  21.  * @uc_ready:		True once DRIVER_INIT_COMPLETE request received
    22. 

  22.  * @modem_ready:	True when INIT_DRIVER response received
    23. 

  23.  * @indication_requested: True when INDICATION_REGISTER request received
    24. 

  24.  * @indication_sent:	True when INIT_COMPLETE indication sent
    25. 

  25.  */
    26. 

  26. struct ipa_qmi {
    27. 

  27. 	struct qmi_handle client_handle;
    28. 

  28. 	struct qmi_handle server_handle;
    29. 

  29. 

  30. 	/* Information used for the client handle */
    31. 

  31. 	struct sockaddr_qrtr modem_sq;
    32. 

  32. 	struct work_struct init_driver_work;
    33. 

  33. 

  34. 	/* Flags used in negotiating readiness */
    35. 

  35. 	bool initial_boot;
    36. 

  36. 	bool uc_ready;
    37. 

  37. 	bool modem_ready;
    38. 

  38. 	bool indication_requested;
    39. 

  39. 	bool indication_sent;
    40. 

  40. };
    41. 

  41. 

  42. /**
    43. 

  43.  * ipa_qmi_setup() - Set up for QMI message exchange
    44. 

  44.  * @ipa:		IPA pointer
    45. 

  45.  *
    46. 

  46.  * This is called at the end of ipa_setup(), to prepare for the exchange
    47. 

  47.  * of QMI messages that perform a "handshake" between the AP and modem.
    48. 

  48.  * When the modem QMI server announces its presence, an AP request message
    49. 

  49.  * supplies operating parameters to be used to the modem, and the modem
    50. 

  50.  * acknowledges receipt of those parameters.  The modem will not touch the
    51. 

  51.  * IPA hardware until this handshake is complete.
    52. 

  52.  *
    53. 

  53.  * If the modem crashes (or shuts down) a new handshake begins when the
    54. 

  54.  * modem's QMI server is started again.
    55. 

  55.  */
    56. 

  56. int ipa_qmi_setup(struct ipa *ipa);
    57. 

  57. 

  58. /**
    59. 

  59.  * ipa_qmi_teardown() - Tear down IPA QMI handles
    60. 

  60.  * @ipa:		IPA pointer
    61. 

  61.  */
    62. 

  62. void ipa_qmi_teardown(struct ipa *ipa);
    63. 

  63. 

  64. #endif /* !_IPA_QMI_H_ */
    65.