diff options
| -rw-r--r-- | drivers/net/ipa/ipa_cmd.c | 26 | ||||
| -rw-r--r-- | drivers/net/ipa/ipa_cmd.h | 17 | ||||
| -rw-r--r-- | drivers/net/ipa/ipa_endpoint.c | 6 |
3 files changed, 28 insertions, 21 deletions
diff --git a/drivers/net/ipa/ipa_cmd.c b/drivers/net/ipa/ipa_cmd.c index 002e51448510..27630244512d 100644 --- a/drivers/net/ipa/ipa_cmd.c +++ b/drivers/net/ipa/ipa_cmd.c @@ -567,33 +567,43 @@ static void ipa_cmd_transfer_add(struct gsi_trans *trans, u16 size) direction, opcode); } -void ipa_cmd_tag_process_add(struct gsi_trans *trans) +/* Add immediate commands to a transaction to clear the hardware pipeline */ +void ipa_cmd_pipeline_clear_add(struct gsi_trans *trans) { struct ipa *ipa = container_of(trans->gsi, struct ipa, gsi); struct ipa_endpoint *endpoint; - endpoint = ipa->name_map[IPA_ENDPOINT_AP_LAN_RX]; - + /* Issue a no-op register write command (mask 0 means no write) */ ipa_cmd_register_write_add(trans, 0, 0, 0, true); + + /* Send a data packet through the IPA pipeline. The packet_init + * command says to send the next packet directly to the exception + * endpoint without any other IPA processing. The tag_status + * command requests that status be generated on completion of + * that transfer, and that it will contain the given tag value. + * Finally, the transfer command sends a small packet of data + * (instead of a command) using the command endpoint. + */ + endpoint = ipa->name_map[IPA_ENDPOINT_AP_LAN_RX]; ipa_cmd_ip_packet_init_add(trans, endpoint->endpoint_id); ipa_cmd_ip_tag_status_add(trans, 0xcba987654321); ipa_cmd_transfer_add(trans, 4); } -/* Returns the number of commands required for the tag process */ -u32 ipa_cmd_tag_process_count(void) +/* Returns the number of commands required to clear the pipeline */ +u32 ipa_cmd_pipeline_clear_count(void) { return 4; } -void ipa_cmd_tag_process(struct ipa *ipa) +void ipa_cmd_pipeline_clear(struct ipa *ipa) { - u32 count = ipa_cmd_tag_process_count(); + u32 count = ipa_cmd_pipeline_clear_count(); struct gsi_trans *trans; trans = ipa_cmd_trans_alloc(ipa, count); if (trans) { - ipa_cmd_tag_process_add(trans); + ipa_cmd_pipeline_clear_add(trans); gsi_trans_commit_wait(trans); } else { dev_err(&ipa->pdev->dev, diff --git a/drivers/net/ipa/ipa_cmd.h b/drivers/net/ipa/ipa_cmd.h index 4ed09c486abc..a41a58cc2c5a 100644 --- a/drivers/net/ipa/ipa_cmd.h +++ b/drivers/net/ipa/ipa_cmd.h @@ -157,26 +157,23 @@ void ipa_cmd_dma_shared_mem_add(struct gsi_trans *trans, u32 offset, u16 size, dma_addr_t addr, bool toward_ipa); /** - * ipa_cmd_tag_process_add() - Add IPA tag process commands to a transaction + * ipa_cmd_pipeline_clear_add() - Add pipeline clear commands to a transaction * @trans: GSI transaction */ -void ipa_cmd_tag_process_add(struct gsi_trans *trans); +void ipa_cmd_pipeline_clear_add(struct gsi_trans *trans); /** - * ipa_cmd_tag_process_add_count() - Number of commands in a tag process + * ipa_cmd_pipeline_clear_count() - # commands required to clear pipeline * * Return: The number of elements to allocate in a transaction - * to hold tag process commands + * to hold commands to clear the pipeline */ -u32 ipa_cmd_tag_process_count(void); +u32 ipa_cmd_pipeline_clear_count(void); /** - * ipa_cmd_tag_process() - Perform a tag process - * - * @Return: The number of elements to allocate in a transaction - * to hold tag process commands + * ipa_cmd_pipeline_clear() - Clear the hardware pipeline */ -void ipa_cmd_tag_process(struct ipa *ipa); +void ipa_cmd_pipeline_clear(struct ipa *ipa); /** * ipa_cmd_trans_alloc() - Allocate a transaction for the command TX endpoint diff --git a/drivers/net/ipa/ipa_endpoint.c b/drivers/net/ipa/ipa_endpoint.c index 688a3dd40510..39ae0dd4e047 100644 --- a/drivers/net/ipa/ipa_endpoint.c +++ b/drivers/net/ipa/ipa_endpoint.c @@ -399,7 +399,7 @@ int ipa_endpoint_modem_exception_reset_all(struct ipa *ipa) * That won't happen, and we could be more precise, but this is fine * for now. We need to end the transaction with a "tag process." */ - count = hweight32(initialized) + ipa_cmd_tag_process_count(); + count = hweight32(initialized) + ipa_cmd_pipeline_clear_count(); trans = ipa_cmd_trans_alloc(ipa, count); if (!trans) { dev_err(&ipa->pdev->dev, @@ -428,7 +428,7 @@ int ipa_endpoint_modem_exception_reset_all(struct ipa *ipa) ipa_cmd_register_write_add(trans, offset, 0, ~0, false); } - ipa_cmd_tag_process_add(trans); + ipa_cmd_pipeline_clear_add(trans); /* XXX This should have a 1 second timeout */ gsi_trans_commit_wait(trans); @@ -1564,7 +1564,7 @@ void ipa_endpoint_suspend(struct ipa *ipa) if (ipa->modem_netdev) ipa_modem_suspend(ipa->modem_netdev); - ipa_cmd_tag_process(ipa); + ipa_cmd_pipeline_clear(ipa); ipa_endpoint_suspend_one(ipa->name_map[IPA_ENDPOINT_AP_LAN_RX]); ipa_endpoint_suspend_one(ipa->name_map[IPA_ENDPOINT_AP_COMMAND_TX]); |