diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dce/dce_aux.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce/dce_aux.c | 484 |
1 files changed, 431 insertions, 53 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c index f2295e780031..9e39cd7b203e 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c @@ -30,6 +30,9 @@ #include "core_types.h" #include "dce_aux.h" #include "dce/dce_11_0_sh_mask.h" +#include "dm_event_log.h" +#include "dm_helpers.h" +#include "dmub/inc/dmub_cmd.h" #define CTX \ aux110->base.ctx @@ -39,8 +42,17 @@ #define DC_LOGGER \ engine->ctx->logger +#define DC_TRACE_LEVEL_MESSAGE(...) do { } while (0) +#define IS_DC_I2CAUX_LOGGING_ENABLED() (false) +#define LOG_FLAG_Error_I2cAux LOG_ERROR +#define LOG_FLAG_I2cAux_DceAux LOG_I2C_AUX + #include "reg_helper.h" +#undef FN +#define FN(reg_name, field_name) \ + aux110->shift->field_name, aux110->mask->field_name + #define FROM_AUX_ENGINE(ptr) \ container_of((ptr), struct aux_engine_dce110, base) @@ -54,6 +66,18 @@ enum { AUX_TIMED_OUT_RETRY_COUNTER = 2, AUX_DEFER_RETRY_COUNTER = 6 }; + +#define TIME_OUT_INCREMENT 1016 +#define TIME_OUT_MULTIPLIER_8 8 +#define TIME_OUT_MULTIPLIER_16 16 +#define TIME_OUT_MULTIPLIER_32 32 +#define TIME_OUT_MULTIPLIER_64 64 +#define MAX_TIMEOUT_LENGTH 127 +#define DEFAULT_AUX_ENGINE_MULT 0 +#define DEFAULT_AUX_ENGINE_LENGTH 69 + +#define DC_TRACE_LEVEL_MESSAGE(...) do { } while (0) + static void release_engine( struct dce_aux *engine) { @@ -63,7 +87,8 @@ static void release_engine( engine->ddc = NULL; - REG_UPDATE(AUX_ARB_CONTROL, AUX_SW_DONE_USING_AUX_REG, 1); + REG_UPDATE_2(AUX_ARB_CONTROL, AUX_SW_DONE_USING_AUX_REG, 1, + AUX_SW_USE_AUX_REG_REQ, 0); } #define SW_CAN_ACCESS_AUX 1 @@ -197,7 +222,7 @@ static void submit_channel_request( REG_UPDATE(AUX_INTERRUPT_CONTROL, AUX_SW_DONE_ACK, 1); REG_WAIT(AUX_SW_STATUS, AUX_SW_DONE, 0, - 10, aux110->timeout_period/10); + 10, aux110->polling_timeout_period/10); /* set the delay and the number of bytes to write */ @@ -252,6 +277,8 @@ static void submit_channel_request( } REG_UPDATE(AUX_SW_CONTROL, AUX_SW_GO, 1); + EVENT_LOG_AUX_REQ(engine->ddc->pin_data->en, EVENT_LOG_AUX_ORIGIN_NATIVE, + request->action, request->address, request->length, request->data); } static int read_channel_reply(struct dce_aux *engine, uint32_t size, @@ -307,7 +334,7 @@ static int read_channel_reply(struct dce_aux *engine, uint32_t size, return 0; } -static enum aux_channel_operation_result get_channel_status( +static enum aux_return_code_type get_channel_status( struct dce_aux *engine, uint8_t *returned_bytes) { @@ -318,18 +345,18 @@ static enum aux_channel_operation_result get_channel_status( if (returned_bytes == NULL) { /*caller pass NULL pointer*/ ASSERT_CRITICAL(false); - return AUX_CHANNEL_OPERATION_FAILED_REASON_UNKNOWN; + return AUX_RET_ERROR_UNKNOWN; } *returned_bytes = 0; /* poll to make sure that SW_DONE is asserted */ REG_WAIT(AUX_SW_STATUS, AUX_SW_DONE, 1, - 10, aux110->timeout_period/10); + 10, aux110->polling_timeout_period/10); value = REG_READ(AUX_SW_STATUS); /* in case HPD is LOW, exit AUX transaction */ if ((value & AUX_SW_STATUS__AUX_SW_HPD_DISCON_MASK)) - return AUX_CHANNEL_OPERATION_FAILED_HPD_DISCON; + return AUX_RET_ERROR_HPD_DISCON; /* Note that the following bits are set in 'status.bits' * during CTS 4.2.1.2 (FW 3.3.1): @@ -342,14 +369,14 @@ static enum aux_channel_operation_result get_channel_status( if (value & AUX_SW_STATUS__AUX_SW_DONE_MASK) { if ((value & AUX_SW_STATUS__AUX_SW_RX_TIMEOUT_STATE_MASK) || (value & AUX_SW_STATUS__AUX_SW_RX_TIMEOUT_MASK)) - return AUX_CHANNEL_OPERATION_FAILED_TIMEOUT; + return AUX_RET_ERROR_TIMEOUT; else if ((value & AUX_SW_STATUS__AUX_SW_RX_INVALID_STOP_MASK) || (value & AUX_SW_STATUS__AUX_SW_RX_RECV_NO_DET_MASK) || (value & AUX_SW_STATUS__AUX_SW_RX_RECV_INVALID_H_MASK) || (value & AUX_SW_STATUS__AUX_SW_RX_RECV_INVALID_L_MASK)) - return AUX_CHANNEL_OPERATION_FAILED_INVALID_REPLY; + return AUX_RET_ERROR_INVALID_REPLY; *returned_bytes = get_reg_field_value(value, AUX_SW_STATUS, @@ -357,33 +384,27 @@ static enum aux_channel_operation_result get_channel_status( if (*returned_bytes == 0) return - AUX_CHANNEL_OPERATION_FAILED_INVALID_REPLY; + AUX_RET_ERROR_INVALID_REPLY; else { *returned_bytes -= 1; - return AUX_CHANNEL_OPERATION_SUCCEEDED; + return AUX_RET_SUCCESS; } } else { /*time_elapsed >= aux_engine->timeout_period * AUX_SW_STATUS__AUX_SW_HPD_DISCON = at this point */ ASSERT_CRITICAL(false); - return AUX_CHANNEL_OPERATION_FAILED_TIMEOUT; + return AUX_RET_ERROR_TIMEOUT; } } -enum i2caux_engine_type get_engine_type( - const struct dce_aux *engine) -{ - return I2CAUX_ENGINE_TYPE_AUX; -} - static bool acquire( struct dce_aux *engine, struct ddc *ddc) { enum gpio_result result; - if (!is_engine_available(engine)) + if ((engine == NULL) || !is_engine_available(engine)) return false; result = dal_ddc_open(ddc, GPIO_MODE_HARDWARE, @@ -393,7 +414,8 @@ static bool acquire( return false; if (!acquire_engine(engine)) { - dal_ddc_close(ddc); + engine->ddc = ddc; + release_engine(engine); return false; } @@ -411,58 +433,150 @@ void dce110_engine_destroy(struct dce_aux **engine) *engine = NULL; } + +static uint32_t dce_aux_configure_timeout(struct ddc_service *ddc, + uint32_t timeout_in_us) +{ + uint32_t multiplier = 0; + uint32_t length = 0; + uint32_t prev_length = 0; + uint32_t prev_mult = 0; + uint32_t prev_timeout_val = 0; + struct ddc *ddc_pin = ddc->ddc_pin; + struct dce_aux *aux_engine = ddc->ctx->dc->res_pool->engines[ddc_pin->pin_data->en]; + struct aux_engine_dce110 *aux110 = FROM_AUX_ENGINE(aux_engine); + + /* 1-Update polling timeout period */ + aux110->polling_timeout_period = timeout_in_us * SW_AUX_TIMEOUT_PERIOD_MULTIPLIER; + + /* 2-Update aux timeout period length and multiplier */ + if (timeout_in_us == 0) { + multiplier = DEFAULT_AUX_ENGINE_MULT; + length = DEFAULT_AUX_ENGINE_LENGTH; + } else if (timeout_in_us <= TIME_OUT_INCREMENT) { + multiplier = 0; + length = timeout_in_us/TIME_OUT_MULTIPLIER_8; + if (timeout_in_us % TIME_OUT_MULTIPLIER_8 != 0) + length++; + } else if (timeout_in_us <= 2 * TIME_OUT_INCREMENT) { + multiplier = 1; + length = timeout_in_us/TIME_OUT_MULTIPLIER_16; + if (timeout_in_us % TIME_OUT_MULTIPLIER_16 != 0) + length++; + } else if (timeout_in_us <= 4 * TIME_OUT_INCREMENT) { + multiplier = 2; + length = timeout_in_us/TIME_OUT_MULTIPLIER_32; + if (timeout_in_us % TIME_OUT_MULTIPLIER_32 != 0) + length++; + } else if (timeout_in_us > 4 * TIME_OUT_INCREMENT) { + multiplier = 3; + length = timeout_in_us/TIME_OUT_MULTIPLIER_64; + if (timeout_in_us % TIME_OUT_MULTIPLIER_64 != 0) + length++; + } + + length = (length < MAX_TIMEOUT_LENGTH) ? length : MAX_TIMEOUT_LENGTH; + + REG_GET_2(AUX_DPHY_RX_CONTROL1, AUX_RX_TIMEOUT_LEN, &prev_length, AUX_RX_TIMEOUT_LEN_MUL, &prev_mult); + + switch (prev_mult) { + case 0: + prev_timeout_val = prev_length * TIME_OUT_MULTIPLIER_8; + break; + case 1: + prev_timeout_val = prev_length * TIME_OUT_MULTIPLIER_16; + break; + case 2: + prev_timeout_val = prev_length * TIME_OUT_MULTIPLIER_32; + break; + case 3: + prev_timeout_val = prev_length * TIME_OUT_MULTIPLIER_64; + break; + default: + prev_timeout_val = DEFAULT_AUX_ENGINE_LENGTH * TIME_OUT_MULTIPLIER_8; + break; + } + + REG_UPDATE_SEQ_2(AUX_DPHY_RX_CONTROL1, AUX_RX_TIMEOUT_LEN, length, AUX_RX_TIMEOUT_LEN_MUL, multiplier); + + return prev_timeout_val; +} + +static struct dce_aux_funcs aux_functions = { + .configure_timeout = NULL, + .destroy = NULL, +}; + struct dce_aux *dce110_aux_engine_construct(struct aux_engine_dce110 *aux_engine110, struct dc_context *ctx, uint32_t inst, uint32_t timeout_period, - const struct dce110_aux_registers *regs) + const struct dce110_aux_registers *regs, + const struct dce110_aux_registers_mask *mask, + const struct dce110_aux_registers_shift *shift, + bool is_ext_aux_timeout_configurable) { aux_engine110->base.ddc = NULL; aux_engine110->base.ctx = ctx; aux_engine110->base.delay = 0; aux_engine110->base.max_defer_write_retry = 0; aux_engine110->base.inst = inst; - aux_engine110->timeout_period = timeout_period; + aux_engine110->polling_timeout_period = timeout_period; aux_engine110->regs = regs; + aux_engine110->mask = mask; + aux_engine110->shift = shift; + aux_engine110->base.funcs = &aux_functions; + if (is_ext_aux_timeout_configurable) + aux_engine110->base.funcs->configure_timeout = &dce_aux_configure_timeout; + return &aux_engine110->base; } static enum i2caux_transaction_action i2caux_action_from_payload(struct aux_payload *payload) { if (payload->i2c_over_aux) { + if (payload->write_status_update) { + if (payload->mot) + return I2CAUX_TRANSACTION_ACTION_I2C_STATUS_REQUEST_MOT; + else + return I2CAUX_TRANSACTION_ACTION_I2C_STATUS_REQUEST; + } if (payload->write) { if (payload->mot) return I2CAUX_TRANSACTION_ACTION_I2C_WRITE_MOT; - return I2CAUX_TRANSACTION_ACTION_I2C_WRITE; + else + return I2CAUX_TRANSACTION_ACTION_I2C_WRITE; } if (payload->mot) return I2CAUX_TRANSACTION_ACTION_I2C_READ_MOT; + return I2CAUX_TRANSACTION_ACTION_I2C_READ; } if (payload->write) return I2CAUX_TRANSACTION_ACTION_DP_WRITE; + return I2CAUX_TRANSACTION_ACTION_DP_READ; } int dce_aux_transfer_raw(struct ddc_service *ddc, struct aux_payload *payload, - enum aux_channel_operation_result *operation_result) + enum aux_return_code_type *operation_result) { struct ddc *ddc_pin = ddc->ddc_pin; struct dce_aux *aux_engine; struct aux_request_transaction_data aux_req; - struct aux_reply_transaction_data aux_rep; uint8_t returned_bytes = 0; int res = -1; uint32_t status; memset(&aux_req, 0, sizeof(aux_req)); - memset(&aux_rep, 0, sizeof(aux_rep)); aux_engine = ddc->ctx->dc->res_pool->engines[ddc_pin->pin_data->en]; - if (!acquire(aux_engine, ddc_pin)) + if (!acquire(aux_engine, ddc_pin)) { + *operation_result = AUX_RET_ERROR_ENGINE_ACQUIRE; return -1; + } if (payload->i2c_over_aux) aux_req.type = AUX_TRANSACTION_TYPE_I2C; @@ -472,17 +586,22 @@ int dce_aux_transfer_raw(struct ddc_service *ddc, aux_req.action = i2caux_action_from_payload(payload); aux_req.address = payload->address; - aux_req.delay = payload->defer_delay * 10; + aux_req.delay = 0; aux_req.length = payload->length; aux_req.data = payload->data; submit_channel_request(aux_engine, &aux_req); *operation_result = get_channel_status(aux_engine, &returned_bytes); - if (*operation_result == AUX_CHANNEL_OPERATION_SUCCEEDED) { - read_channel_reply(aux_engine, payload->length, + if (*operation_result == AUX_RET_SUCCESS) { + int __maybe_unused bytes_replied = 0; + + bytes_replied = read_channel_reply(aux_engine, payload->length, payload->data, payload->reply, &status); + EVENT_LOG_AUX_REP(aux_engine->ddc->pin_data->en, + EVENT_LOG_AUX_ORIGIN_NATIVE, *payload->reply, + bytes_replied, payload->data); res = returned_bytes; } else { res = -1; @@ -492,11 +611,84 @@ int dce_aux_transfer_raw(struct ddc_service *ddc, return res; } +int dce_aux_transfer_dmub_raw(struct ddc_service *ddc, + struct aux_payload *payload, + enum aux_return_code_type *operation_result) +{ + struct ddc *ddc_pin = ddc->ddc_pin; + + if (ddc_pin != NULL) { + struct dce_aux *aux_engine = ddc->ctx->dc->res_pool->engines[ddc_pin->pin_data->en]; + /* XXX: Workaround to configure ddc channels for aux transactions */ + if (!acquire(aux_engine, ddc_pin)) { + *operation_result = AUX_RET_ERROR_ENGINE_ACQUIRE; + return -1; + } + release_engine(aux_engine); + } + + return dm_helper_dmub_aux_transfer_sync(ddc->ctx, ddc->link, payload, operation_result); +} + #define AUX_MAX_RETRIES 7 -#define AUX_MAX_DEFER_RETRIES 7 +#define AUX_MIN_DEFER_RETRIES 7 +#define AUX_MAX_DEFER_TIMEOUT_MS 50 #define AUX_MAX_I2C_DEFER_RETRIES 7 #define AUX_MAX_INVALID_REPLY_RETRIES 2 #define AUX_MAX_TIMEOUT_RETRIES 3 +#define AUX_DEFER_DELAY_FOR_DPIA 4 /*ms*/ + +static void dce_aux_log_payload(const char *payload_name, + unsigned char *payload, uint32_t length, uint32_t max_length_to_log) +{ + if (!IS_DC_I2CAUX_LOGGING_ENABLED()) + return; + + if (payload && length) { + char hex_str[128] = {0}; + char *hex_str_ptr = &hex_str[0]; + uint32_t hex_str_remaining = sizeof(hex_str); + unsigned char *payload_ptr = payload; + unsigned char *payload_max_to_log_ptr = payload_ptr + min(max_length_to_log, length); + unsigned int count; + char *padding = ""; + + while (payload_ptr < payload_max_to_log_ptr) { + count = snprintf_count(hex_str_ptr, hex_str_remaining, "%s%02X", padding, *payload_ptr); + padding = " "; + hex_str_remaining -= count; + hex_str_ptr += count; + payload_ptr++; + } + + count = snprintf_count(hex_str_ptr, hex_str_remaining, " "); + hex_str_remaining -= count; + hex_str_ptr += count; + + payload_ptr = payload; + while (payload_ptr < payload_max_to_log_ptr) { + count = snprintf_count(hex_str_ptr, hex_str_remaining, "%c", + *payload_ptr >= ' ' ? *payload_ptr : '.'); + hex_str_remaining -= count; + hex_str_ptr += count; + payload_ptr++; + } + + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_VERBOSE, + LOG_FLAG_I2cAux_DceAux, + "dce_aux_log_payload: %s: length=%u: data: %s%s", + payload_name, + length, + hex_str, + (length > max_length_to_log ? " (...)" : " ")); + } else { + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_VERBOSE, + LOG_FLAG_I2cAux_DceAux, + "dce_aux_log_payload: %s: length=%u: data: <empty payload>", + payload_name, + length); + } +} bool dce_aux_transfer_with_retries(struct ddc_service *ddc, struct aux_payload *payload) @@ -504,12 +696,24 @@ bool dce_aux_transfer_with_retries(struct ddc_service *ddc, int i, ret = 0; uint8_t reply; bool payload_reply = true; - enum aux_channel_operation_result operation_result; + enum aux_return_code_type operation_result; + bool retry_on_defer = false; + struct ddc *ddc_pin = ddc->ddc_pin; + struct dce_aux *aux_engine = NULL; + struct aux_engine_dce110 *aux110 = NULL; + uint32_t defer_time_in_ms = 0; + int aux_ack_retries = 0, aux_defer_retries = 0, aux_i2c_defer_retries = 0, aux_timeout_retries = 0, - aux_invalid_reply_retries = 0; + aux_invalid_reply_retries = 0, + aux_ack_m_retries = 0; + + if (ddc_pin) { + aux_engine = ddc->ctx->dc->res_pool->engines[ddc_pin->pin_data->en]; + aux110 = FROM_AUX_ENGINE(aux_engine); + } if (!payload->reply) { payload_reply = false; @@ -517,72 +721,246 @@ bool dce_aux_transfer_with_retries(struct ddc_service *ddc, } for (i = 0; i < AUX_MAX_RETRIES; i++) { + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_INFORMATION, + LOG_FLAG_I2cAux_DceAux, + "dce_aux_transfer_with_retries: link_index=%u: START: retry %d of %d: address=0x%04x length=%u write=%d mot=%d", + ddc && ddc->link ? ddc->link->link_index : UINT_MAX, + i + 1, + (int)AUX_MAX_RETRIES, + payload->address, + payload->length, + (unsigned int) payload->write, + (unsigned int) payload->mot); + if (payload->write) + dce_aux_log_payload(" write", payload->data, payload->length, 16); ret = dce_aux_transfer_raw(ddc, payload, &operation_result); + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_INFORMATION, + LOG_FLAG_I2cAux_DceAux, + "dce_aux_transfer_with_retries: link_index=%u: END: retry %d of %d: address=0x%04x length=%u write=%d mot=%d: ret=%d operation_result=%d payload->reply=%u", + ddc && ddc->link ? ddc->link->link_index : UINT_MAX, + i + 1, + (int)AUX_MAX_RETRIES, + payload->address, + payload->length, + (unsigned int) payload->write, + (unsigned int) payload->mot, + ret, + (int)operation_result, + (unsigned int) *payload->reply); + if (!payload->write) + dce_aux_log_payload(" read", payload->data, ret > 0 ? ret : 0, 16); + switch (operation_result) { - case AUX_CHANNEL_OPERATION_SUCCEEDED: + case AUX_RET_SUCCESS: aux_timeout_retries = 0; aux_invalid_reply_retries = 0; switch (*payload->reply) { case AUX_TRANSACTION_REPLY_AUX_ACK: + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_INFORMATION, + LOG_FLAG_I2cAux_DceAux, + "dce_aux_transfer_with_retries: AUX_RET_SUCCESS: AUX_TRANSACTION_REPLY_AUX_ACK"); if (!payload->write && payload->length != ret) { - if (++aux_ack_retries >= AUX_MAX_RETRIES) + if (++aux_ack_retries >= AUX_MAX_RETRIES) { + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_ERROR, + LOG_FLAG_Error_I2cAux, + "dce_aux_transfer_with_retries: FAILURE: aux_ack_retries=%d >= AUX_MAX_RETRIES=%d", + aux_defer_retries, + AUX_MAX_RETRIES); goto fail; - else + } else udelay(300); + } else if (payload->write && ret > 0) { + /* sink requested more time to complete the write via AUX_ACKM */ + if (++aux_ack_m_retries >= AUX_MAX_RETRIES) { + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_ERROR, + LOG_FLAG_Error_I2cAux, + "dce_aux_transfer_with_retries: FAILURE: aux_ack_m_retries=%d >= AUX_MAX_RETRIES=%d", + aux_ack_m_retries, + AUX_MAX_RETRIES); + goto fail; + } + + /* retry reading the write status until complete + * NOTE: payload is modified here + */ + payload->write = false; + payload->write_status_update = true; + payload->length = 0; + udelay(300); + } else return true; break; case AUX_TRANSACTION_REPLY_AUX_DEFER: - case AUX_TRANSACTION_REPLY_I2C_OVER_AUX_NACK: + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_INFORMATION, + LOG_FLAG_I2cAux_DceAux, + "dce_aux_transfer_with_retries: AUX_RET_SUCCESS: AUX_TRANSACTION_REPLY_AUX_DEFER"); + + /* polling_timeout_period is in us */ + if (aux110) + defer_time_in_ms += aux110->polling_timeout_period / 1000; + else + defer_time_in_ms += AUX_DEFER_DELAY_FOR_DPIA; + ++aux_defer_retries; + fallthrough; case AUX_TRANSACTION_REPLY_I2C_OVER_AUX_DEFER: - if (++aux_defer_retries >= AUX_MAX_DEFER_RETRIES) + if (*payload->reply == AUX_TRANSACTION_REPLY_I2C_OVER_AUX_DEFER) + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_INFORMATION, + LOG_FLAG_I2cAux_DceAux, + "dce_aux_transfer_with_retries: AUX_RET_SUCCESS: AUX_TRANSACTION_REPLY_I2C_OVER_AUX_DEFER"); + + retry_on_defer = true; + fallthrough; + case AUX_TRANSACTION_REPLY_I2C_OVER_AUX_NACK: + if (*payload->reply == AUX_TRANSACTION_REPLY_I2C_OVER_AUX_NACK) + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_INFORMATION, + LOG_FLAG_I2cAux_DceAux, + "dce_aux_transfer_with_retries: AUX_RET_SUCCESS: AUX_TRANSACTION_REPLY_I2C_OVER_AUX_NACK"); + + if (aux_defer_retries >= AUX_MIN_DEFER_RETRIES + && defer_time_in_ms >= AUX_MAX_DEFER_TIMEOUT_MS) { + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_ERROR, + LOG_FLAG_Error_I2cAux, + "dce_aux_transfer_with_retries: FAILURE: aux_defer_retries=%d >= AUX_MIN_DEFER_RETRIES=%d && defer_time_in_ms=%d >= AUX_MAX_DEFER_TIMEOUT_MS=%d", + aux_defer_retries, + AUX_MIN_DEFER_RETRIES, + defer_time_in_ms, + AUX_MAX_DEFER_TIMEOUT_MS); goto fail; + } else { + if ((*payload->reply == AUX_TRANSACTION_REPLY_AUX_DEFER) || + (*payload->reply == AUX_TRANSACTION_REPLY_I2C_OVER_AUX_DEFER)) { + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_INFORMATION, + LOG_FLAG_I2cAux_DceAux, + "dce_aux_transfer_with_retries: payload->defer_delay=%u", + payload->defer_delay); + if (payload->defer_delay > 1) { + msleep(payload->defer_delay); + defer_time_in_ms += payload->defer_delay; + } else if (payload->defer_delay <= 1) { + udelay(payload->defer_delay * 1000); + defer_time_in_ms += payload->defer_delay; + } + } + } break; case AUX_TRANSACTION_REPLY_I2C_DEFER: + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_INFORMATION, + LOG_FLAG_I2cAux_DceAux, + "dce_aux_transfer_with_retries: AUX_RET_SUCCESS: AUX_TRANSACTION_REPLY_I2C_DEFER"); + aux_defer_retries = 0; - if (++aux_i2c_defer_retries >= AUX_MAX_I2C_DEFER_RETRIES) + if (++aux_i2c_defer_retries >= AUX_MAX_I2C_DEFER_RETRIES) { + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_ERROR, + LOG_FLAG_Error_I2cAux, + "dce_aux_transfer_with_retries: FAILURE: aux_i2c_defer_retries=%d >= AUX_MAX_I2C_DEFER_RETRIES=%d", + aux_i2c_defer_retries, + AUX_MAX_I2C_DEFER_RETRIES); goto fail; + } break; case AUX_TRANSACTION_REPLY_AUX_NACK: + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_INFORMATION, + LOG_FLAG_I2cAux_DceAux, + "dce_aux_transfer_with_retries: AUX_RET_SUCCESS: AUX_TRANSACTION_REPLY_AUX_NACK"); + goto fail; + case AUX_TRANSACTION_REPLY_HPD_DISCON: + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_INFORMATION, + LOG_FLAG_I2cAux_DceAux, + "dce_aux_transfer_with_retries: AUX_RET_SUCCESS: AUX_TRANSACTION_REPLY_HPD_DISCON"); + goto fail; + default: + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_ERROR, + LOG_FLAG_Error_I2cAux, + "dce_aux_transfer_with_retries: AUX_RET_SUCCESS: FAILURE: AUX_TRANSACTION_REPLY_* unknown, default case. Reply: %d", *payload->reply); goto fail; } break; - case AUX_CHANNEL_OPERATION_FAILED_INVALID_REPLY: - if (++aux_invalid_reply_retries >= AUX_MAX_INVALID_REPLY_RETRIES) + case AUX_RET_ERROR_INVALID_REPLY: + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_INFORMATION, + LOG_FLAG_I2cAux_DceAux, + "dce_aux_transfer_with_retries: AUX_RET_ERROR_INVALID_REPLY"); + if (++aux_invalid_reply_retries >= AUX_MAX_INVALID_REPLY_RETRIES) { + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_ERROR, + LOG_FLAG_Error_I2cAux, + "dce_aux_transfer_with_retries: FAILURE: aux_invalid_reply_retries=%d >= AUX_MAX_INVALID_REPLY_RETRIES=%d", + aux_invalid_reply_retries, + AUX_MAX_INVALID_REPLY_RETRIES); goto fail; - else + } else udelay(400); break; - case AUX_CHANNEL_OPERATION_FAILED_TIMEOUT: - if (++aux_timeout_retries >= AUX_MAX_TIMEOUT_RETRIES) - goto fail; - else { - /* - * DP 1.4, 2.8.2: AUX Transaction Response/Reply Timeouts - * According to the DP spec there should be 3 retries total - * with a 400us wait inbetween each. Hardware already waits - * for 550us therefore no wait is required here. - */ + case AUX_RET_ERROR_TIMEOUT: + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_INFORMATION, + LOG_FLAG_I2cAux_DceAux, + "dce_aux_transfer_with_retries: AUX_RET_ERROR_TIMEOUT"); + // Check whether a DEFER had occurred before the timeout. + // If so, treat timeout as a DEFER. + if (retry_on_defer) { + if (++aux_defer_retries >= AUX_MIN_DEFER_RETRIES) { + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_ERROR, + LOG_FLAG_Error_I2cAux, + "dce_aux_transfer_with_retries: FAILURE: aux_defer_retries=%d >= AUX_MIN_DEFER_RETRIES=%d", + aux_defer_retries, + AUX_MIN_DEFER_RETRIES); + goto fail; + } else if (payload->defer_delay > 0) { + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_INFORMATION, + LOG_FLAG_I2cAux_DceAux, + "dce_aux_transfer_with_retries: payload->defer_delay=%u", + payload->defer_delay); + msleep(payload->defer_delay); + } + } else { + if (++aux_timeout_retries >= AUX_MAX_TIMEOUT_RETRIES) { + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_ERROR, + LOG_FLAG_Error_I2cAux, + "dce_aux_transfer_with_retries: FAILURE: aux_timeout_retries=%d >= AUX_MAX_TIMEOUT_RETRIES=%d", + aux_timeout_retries, + AUX_MAX_TIMEOUT_RETRIES); + goto fail; + } else { + /* + * DP 1.4, 2.8.2: AUX Transaction Response/Reply Timeouts + * According to the DP spec there should be 3 retries total + * with a 400us wait inbetween each. Hardware already waits + * for 550us therefore no wait is required here. + */ + } } break; - case AUX_CHANNEL_OPERATION_FAILED_HPD_DISCON: - case AUX_CHANNEL_OPERATION_FAILED_REASON_UNKNOWN: + case AUX_RET_ERROR_HPD_DISCON: + case AUX_RET_ERROR_ENGINE_ACQUIRE: + case AUX_RET_ERROR_UNKNOWN: default: + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_INFORMATION, + LOG_FLAG_I2cAux_DceAux, + "dce_aux_transfer_with_retries: Failure: operation_result=%d", + (int)operation_result); goto fail; } } fail: + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_ERROR, + LOG_FLAG_Error_I2cAux, + "dce_aux_transfer_with_retries: FAILURE"); if (!payload_reply) payload->reply = NULL; + + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_ERROR, + WPP_BIT_FLAG_DC_ERROR, + "AUX transaction failed. Result: %d", + operation_result); + return false; } |