core.h 5.7 KB

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  1. /* SPDX-License-Identifier: GPL-2.0-only */
  2. /*
  3. * linux/drivers/mmc/core/core.h
  4. *
  5. * Copyright (C) 2003 Russell King, All Rights Reserved.
  6. * Copyright 2007 Pierre Ossman
  7. */
  8. #ifndef _MMC_CORE_CORE_H
  9. #define _MMC_CORE_CORE_H
  10. #include <linux/delay.h>
  11. #include <linux/sched.h>
  12. struct mmc_host;
  13. struct mmc_card;
  14. struct mmc_request;
  15. #define MMC_CMD_RETRIES 3
  16. struct mmc_bus_ops {
  17. void (*remove)(struct mmc_host *);
  18. void (*detect)(struct mmc_host *);
  19. int (*pre_suspend)(struct mmc_host *);
  20. int (*suspend)(struct mmc_host *);
  21. int (*resume)(struct mmc_host *);
  22. int (*runtime_suspend)(struct mmc_host *);
  23. int (*runtime_resume)(struct mmc_host *);
  24. int (*alive)(struct mmc_host *);
  25. int (*shutdown)(struct mmc_host *);
  26. int (*hw_reset)(struct mmc_host *);
  27. int (*sw_reset)(struct mmc_host *);
  28. bool (*cache_enabled)(struct mmc_host *);
  29. ANDROID_VENDOR_DATA_ARRAY(1, 2);
  30. };
  31. void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops);
  32. void mmc_detach_bus(struct mmc_host *host);
  33. struct device_node *mmc_of_find_child_device(struct mmc_host *host,
  34. unsigned func_num);
  35. void mmc_init_erase(struct mmc_card *card);
  36. void mmc_set_chip_select(struct mmc_host *host, int mode);
  37. extern void mmc_set_clock(struct mmc_host *host, unsigned int hz);
  38. void mmc_set_bus_mode(struct mmc_host *host, unsigned int mode);
  39. void mmc_set_bus_width(struct mmc_host *host, unsigned int width);
  40. u32 mmc_select_voltage(struct mmc_host *host, u32 ocr);
  41. int mmc_set_uhs_voltage(struct mmc_host *host, u32 ocr);
  42. int mmc_host_set_uhs_voltage(struct mmc_host *host);
  43. int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage);
  44. void mmc_set_initial_signal_voltage(struct mmc_host *host);
  45. void mmc_set_timing(struct mmc_host *host, unsigned int timing);
  46. void mmc_set_driver_type(struct mmc_host *host, unsigned int drv_type);
  47. int mmc_select_drive_strength(struct mmc_card *card, unsigned int max_dtr,
  48. int card_drv_type, int *drv_type);
  49. void mmc_power_up(struct mmc_host *host, u32 ocr);
  50. void mmc_power_off(struct mmc_host *host);
  51. void mmc_power_cycle(struct mmc_host *host, u32 ocr);
  52. void mmc_set_initial_state(struct mmc_host *host);
  53. u32 mmc_vddrange_to_ocrmask(int vdd_min, int vdd_max);
  54. static inline void mmc_delay(unsigned int ms)
  55. {
  56. if (ms <= 20)
  57. usleep_range(ms * 1000, ms * 1250);
  58. else
  59. msleep(ms);
  60. }
  61. void mmc_rescan(struct work_struct *work);
  62. void mmc_start_host(struct mmc_host *host);
  63. void __mmc_stop_host(struct mmc_host *host);
  64. void mmc_stop_host(struct mmc_host *host);
  65. void _mmc_detect_change(struct mmc_host *host, unsigned long delay,
  66. bool cd_irq);
  67. int _mmc_detect_card_removed(struct mmc_host *host);
  68. int mmc_detect_card_removed(struct mmc_host *host);
  69. int mmc_attach_mmc(struct mmc_host *host);
  70. int mmc_attach_sd(struct mmc_host *host);
  71. int mmc_attach_sdio(struct mmc_host *host);
  72. /* Module parameters */
  73. extern bool use_spi_crc;
  74. /* Debugfs information for hosts and cards */
  75. void mmc_add_host_debugfs(struct mmc_host *host);
  76. void mmc_remove_host_debugfs(struct mmc_host *host);
  77. void mmc_add_card_debugfs(struct mmc_card *card);
  78. void mmc_remove_card_debugfs(struct mmc_card *card);
  79. int mmc_execute_tuning(struct mmc_card *card);
  80. int mmc_hs200_to_hs400(struct mmc_card *card);
  81. int mmc_hs400_to_hs200(struct mmc_card *card);
  82. void mmc_wait_for_req_done(struct mmc_host *host, struct mmc_request *mrq);
  83. bool mmc_is_req_done(struct mmc_host *host, struct mmc_request *mrq);
  84. int mmc_start_request(struct mmc_host *host, struct mmc_request *mrq);
  85. int mmc_erase(struct mmc_card *card, unsigned int from, unsigned int nr,
  86. unsigned int arg);
  87. int mmc_can_erase(struct mmc_card *card);
  88. int mmc_can_trim(struct mmc_card *card);
  89. int mmc_can_discard(struct mmc_card *card);
  90. int mmc_can_sanitize(struct mmc_card *card);
  91. int mmc_can_secure_erase_trim(struct mmc_card *card);
  92. int mmc_erase_group_aligned(struct mmc_card *card, unsigned int from,
  93. unsigned int nr);
  94. unsigned int mmc_calc_max_discard(struct mmc_card *card);
  95. int mmc_set_blocklen(struct mmc_card *card, unsigned int blocklen);
  96. int __mmc_claim_host(struct mmc_host *host, struct mmc_ctx *ctx,
  97. atomic_t *abort);
  98. void mmc_release_host(struct mmc_host *host);
  99. void mmc_get_card(struct mmc_card *card, struct mmc_ctx *ctx);
  100. void mmc_put_card(struct mmc_card *card, struct mmc_ctx *ctx);
  101. /**
  102. * mmc_claim_host - exclusively claim a host
  103. * @host: mmc host to claim
  104. *
  105. * Claim a host for a set of operations.
  106. */
  107. static inline void mmc_claim_host(struct mmc_host *host)
  108. {
  109. __mmc_claim_host(host, NULL, NULL);
  110. }
  111. int mmc_cqe_start_req(struct mmc_host *host, struct mmc_request *mrq);
  112. void mmc_cqe_post_req(struct mmc_host *host, struct mmc_request *mrq);
  113. int mmc_cqe_recovery(struct mmc_host *host);
  114. /**
  115. * mmc_pre_req - Prepare for a new request
  116. * @host: MMC host to prepare command
  117. * @mrq: MMC request to prepare for
  118. *
  119. * mmc_pre_req() is called in prior to mmc_start_req() to let
  120. * host prepare for the new request. Preparation of a request may be
  121. * performed while another request is running on the host.
  122. */
  123. static inline void mmc_pre_req(struct mmc_host *host, struct mmc_request *mrq)
  124. {
  125. if (host->ops->pre_req)
  126. host->ops->pre_req(host, mrq);
  127. }
  128. /**
  129. * mmc_post_req - Post process a completed request
  130. * @host: MMC host to post process command
  131. * @mrq: MMC request to post process for
  132. * @err: Error, if non zero, clean up any resources made in pre_req
  133. *
  134. * Let the host post process a completed request. Post processing of
  135. * a request may be performed while another request is running.
  136. */
  137. static inline void mmc_post_req(struct mmc_host *host, struct mmc_request *mrq,
  138. int err)
  139. {
  140. if (host->ops->post_req)
  141. host->ops->post_req(host, mrq, err);
  142. }
  143. static inline bool mmc_cache_enabled(struct mmc_host *host)
  144. {
  145. if (host->bus_ops->cache_enabled)
  146. return host->bus_ops->cache_enabled(host);
  147. return false;
  148. }
  149. #endif