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This patch implements GSI transactions. A GSI transaction is a structure that represents a single request (consisting of one or more TREs) sent to the GSI hardware. The last TRE in a transaction includes a flag requesting that the GSI interrupt the AP to notify that it has completed. TREs are executed and completed strictly in order. For this reason, the completion of a single TRE implies that all previous TREs (in particular all of those "earlier" in a transaction) have completed. Whenever there is a need to send a request (a set of TREs) to the IPA, a GSI transaction is allocated, specifying the number of TREs that will be required. Details of the request (e.g. transfer offsets and length) are represented by in a Linux scatterlist array that is incorporated in the transaction structure. Once all commands (TREs) are added to a transaction it is committed. When the hardware signals that the request has completed, a callback function allows for cleanup or followup activity to be performed before the transaction is freed. Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| .. | ||
| gsi_private.h | ||
| gsi_reg.h | ||
| gsi_trans.c | ||
| gsi_trans.h | ||
| gsi.c | ||
| gsi.h | ||
| ipa_clock.c | ||
| ipa_clock.h | ||
| ipa_data-sc7180.c | ||
| ipa_data-sdm845.c | ||
| ipa_data.h | ||
| ipa_gsi.c | ||
| ipa_gsi.h | ||
| ipa_interrupt.c | ||
| ipa_interrupt.h | ||
| ipa_main.c | ||
| ipa_mem.c | ||
| ipa_mem.h | ||
| ipa_reg.c | ||
| ipa_reg.h | ||
| ipa_version.h | ||
| ipa.h | ||