diff options
Diffstat (limited to 'drivers/net/ipa/ipa_endpoint.c')
| -rw-r--r-- | drivers/net/ipa/ipa_endpoint.c | 129 |
1 files changed, 84 insertions, 45 deletions
diff --git a/drivers/net/ipa/ipa_endpoint.c b/drivers/net/ipa/ipa_endpoint.c index 0f489723689c..385aa63ab4bb 100644 --- a/drivers/net/ipa/ipa_endpoint.c +++ b/drivers/net/ipa/ipa_endpoint.c @@ -35,7 +35,6 @@ #define IPA_ENDPOINT_QMAP_METADATA_MASK 0x000000ff /* host byte order */ #define IPA_ENDPOINT_RESET_AGGR_RETRY_MAX 3 -#define IPA_AGGR_TIME_LIMIT 500 /* microseconds */ /** enum ipa_status_opcode - status element opcode hardware values */ enum ipa_status_opcode { @@ -81,6 +80,24 @@ static u32 aggr_byte_limit_max(enum ipa_version version) return field_max(aggr_byte_limit_fmask(false)); } +/* Compute the aggregation size value to use for a given buffer size */ +static u32 ipa_aggr_size_kb(u32 rx_buffer_size, bool aggr_hard_limit) +{ + /* A hard aggregation limit will not be crossed; aggregation closes + * if saving incoming data would cross the hard byte limit boundary. + * + * With a soft limit, aggregation closes *after* the size boundary + * has been crossed. In that case the limit must leave enough space + * after that limit to receive a full MTU of data plus overhead. + */ + if (!aggr_hard_limit) + rx_buffer_size -= IPA_MTU + IPA_RX_BUFFER_OVERHEAD; + + /* The byte limit is encoded as a number of kilobytes */ + + return rx_buffer_size / SZ_1K; +} + static bool ipa_endpoint_data_valid_one(struct ipa *ipa, u32 count, const struct ipa_gsi_endpoint_data *all_data, const struct ipa_gsi_endpoint_data *data) @@ -93,7 +110,9 @@ static bool ipa_endpoint_data_valid_one(struct ipa *ipa, u32 count, return true; if (!data->toward_ipa) { + const struct ipa_endpoint_rx *rx_config; u32 buffer_size; + u32 aggr_size; u32 limit; if (data->endpoint.filter_support) { @@ -107,8 +126,10 @@ static bool ipa_endpoint_data_valid_one(struct ipa *ipa, u32 count, if (data->ee_id != GSI_EE_AP) return true; - buffer_size = data->endpoint.config.rx.buffer_size; + rx_config = &data->endpoint.config.rx; + /* The buffer size must hold an MTU plus overhead */ + buffer_size = rx_config->buffer_size; limit = IPA_MTU + IPA_RX_BUFFER_OVERHEAD; if (buffer_size < limit) { dev_err(dev, "RX buffer size too small for RX endpoint %u (%u < %u)\n", @@ -116,27 +137,46 @@ static bool ipa_endpoint_data_valid_one(struct ipa *ipa, u32 count, return false; } - /* For an endpoint supporting receive aggregation, the - * aggregation byte limit defines the point at which an - * aggregation window will close. It is programmed into the - * IPA hardware as a number of KB. We don't use "hard byte - * limit" aggregation, so we need to supply enough space in - * a receive buffer to hold a complete MTU plus normal skb - * overhead *after* that aggregation byte limit has been - * crossed. - * - * This check just ensures the receive buffer size doesn't - * exceed what's representable in the aggregation limit field. - */ - if (data->endpoint.config.aggregation) { - limit += SZ_1K * aggr_byte_limit_max(ipa->version); - if (buffer_size - NET_SKB_PAD > limit) { - dev_err(dev, "RX buffer size too large for aggregated RX endpoint %u (%u > %u)\n", - data->endpoint_id, - buffer_size - NET_SKB_PAD, limit); + if (!data->endpoint.config.aggregation) { + bool result = true; - return false; + /* No aggregation; check for bogus aggregation data */ + if (rx_config->aggr_time_limit) { + dev_err(dev, + "time limit with no aggregation for RX endpoint %u\n", + data->endpoint_id); + result = false; } + + if (rx_config->aggr_hard_limit) { + dev_err(dev, "hard limit with no aggregation for RX endpoint %u\n", + data->endpoint_id); + result = false; + } + + if (rx_config->aggr_close_eof) { + dev_err(dev, "close EOF with no aggregation for RX endpoint %u\n", + data->endpoint_id); + result = false; + } + + return result; /* Nothing more to check */ + } + + /* For an endpoint supporting receive aggregation, the byte + * limit defines the point at which aggregation closes. This + * check ensures the receive buffer size doesn't result in a + * limit that exceeds what's representable in the aggregation + * byte limit field. + */ + aggr_size = ipa_aggr_size_kb(buffer_size - NET_SKB_PAD, + rx_config->aggr_hard_limit); + limit = aggr_byte_limit_max(ipa->version); + if (aggr_size > limit) { + dev_err(dev, "aggregated size too large for RX endpoint %u (%u KB > %u KB)\n", + data->endpoint_id, aggr_size, limit); + + return false; } return true; /* Nothing more to check for RX */ @@ -402,12 +442,10 @@ int ipa_endpoint_modem_exception_reset_all(struct ipa *ipa) struct gsi_trans *trans; u32 count; - /* We need one command per modem TX endpoint. We can get an upper - * bound on that by assuming all initialized endpoints are modem->IPA. - * That won't happen, and we could be more precise, but this is fine - * for now. End the transaction with commands to clear the pipeline. + /* We need one command per modem TX endpoint, plus the commands + * that clear the pipeline. */ - count = hweight32(initialized) + ipa_cmd_pipeline_clear_count(); + count = ipa->modem_tx_count + ipa_cmd_pipeline_clear_count(); trans = ipa_cmd_trans_alloc(ipa, count); if (!trans) { dev_err(&ipa->pdev->dev, @@ -438,7 +476,6 @@ int ipa_endpoint_modem_exception_reset_all(struct ipa *ipa) ipa_cmd_pipeline_clear_add(trans); - /* XXX This should have a 1 second timeout */ gsi_trans_commit_wait(trans); ipa_cmd_pipeline_clear_wait(ipa); @@ -670,18 +707,6 @@ static void ipa_endpoint_init_mode(struct ipa_endpoint *endpoint) iowrite32(val, endpoint->ipa->reg_virt + offset); } -/* Compute the aggregation size value to use for a given buffer size */ -static u32 ipa_aggr_size_kb(u32 rx_buffer_size) -{ - /* We don't use "hard byte limit" aggregation, so we define the - * aggregation limit such that our buffer has enough space *after* - * that limit to receive a full MTU of data, plus overhead. - */ - rx_buffer_size -= IPA_MTU + IPA_RX_BUFFER_OVERHEAD; - - return rx_buffer_size / SZ_1K; -} - /* Encoded values for AGGR endpoint register fields */ static u32 aggr_byte_limit_encoded(enum ipa_version version, u32 limit) { @@ -700,9 +725,13 @@ static u32 aggr_time_limit_encoded(enum ipa_version version, u32 limit) if (version < IPA_VERSION_4_5) { /* We set aggregation granularity in ipa_hardware_config() */ - limit = DIV_ROUND_CLOSEST(limit, IPA_AGGR_GRANULARITY); + fmask = aggr_time_limit_fmask(true); + val = DIV_ROUND_CLOSEST(limit, IPA_AGGR_GRANULARITY); + WARN(val > field_max(fmask), + "aggr_time_limit too large (%u > %u usec)\n", + val, field_max(fmask) * IPA_AGGR_GRANULARITY); - return u32_encode_bits(limit, aggr_time_limit_fmask(true)); + return u32_encode_bits(val, fmask); } /* IPA v4.5 expresses the time limit using Qtime. The AP has @@ -717,6 +746,9 @@ static u32 aggr_time_limit_encoded(enum ipa_version version, u32 limit) /* Have to use pulse generator 1 (millisecond granularity) */ gran_sel = AGGR_GRAN_SEL_FMASK; val = DIV_ROUND_CLOSEST(limit, 1000); + WARN(val > field_max(fmask), + "aggr_time_limit too large (%u > %u usec)\n", + limit, field_max(fmask) * 1000); } else { /* We can use pulse generator 0 (100 usec granularity) */ gran_sel = 0; @@ -753,10 +785,11 @@ static void ipa_endpoint_init_aggr(struct ipa_endpoint *endpoint) val |= u32_encode_bits(IPA_GENERIC, AGGR_TYPE_FMASK); buffer_size = rx_config->buffer_size; - limit = ipa_aggr_size_kb(buffer_size - NET_SKB_PAD); + limit = ipa_aggr_size_kb(buffer_size - NET_SKB_PAD, + rx_config->aggr_hard_limit); val |= aggr_byte_limit_encoded(version, limit); - limit = IPA_AGGR_TIME_LIMIT; + limit = rx_config->aggr_time_limit; val |= aggr_time_limit_encoded(version, limit); /* AGGR_PKT_LIMIT is 0 (unlimited) */ @@ -1554,8 +1587,12 @@ static void ipa_endpoint_program(struct ipa_endpoint *endpoint) ipa_endpoint_init_hdr_metadata_mask(endpoint); ipa_endpoint_init_mode(endpoint); ipa_endpoint_init_aggr(endpoint); - if (!endpoint->toward_ipa) - ipa_endpoint_init_hol_block_disable(endpoint); + if (!endpoint->toward_ipa) { + if (endpoint->config.rx.holb_drop) + ipa_endpoint_init_hol_block_enable(endpoint, 0); + else + ipa_endpoint_init_hol_block_disable(endpoint); + } ipa_endpoint_init_deaggr(endpoint); ipa_endpoint_init_rsrc_grp(endpoint); ipa_endpoint_init_seq(endpoint); @@ -1885,6 +1922,8 @@ u32 ipa_endpoint_init(struct ipa *ipa, u32 count, if (data->endpoint.filter_support) filter_map |= BIT(data->endpoint_id); + if (data->ee_id == GSI_EE_MODEM && data->toward_ipa) + ipa->modem_tx_count++; } if (!ipa_filter_map_valid(ipa, filter_map)) |