Lines Matching full:tcs
26 #include <soc/qcom/tcs.h>
42 /* DRV TCS Configuration Information Register */
49 /* Offsets for common TCS Registers, one bit per TCS */
55 * Offsets for per TCS Registers.
58 * Multiply tcs_id by RSC_DRV_TCS_OFFSET to find a given TCS and add one
63 #define RSC_DRV_STATUS 0x18 /* zero if tcs is busy */
67 * Offsets for per command in a TCS.
69 * Commands (up to 16) start at 0x30 in a TCS; multiply command index
81 /* TCS CMD register bit mask */
95 * space are all the TCS blocks. The offset of the TCS blocks is
96 * specified in the device tree by "qcom,tcs-offset" and used to
98 * - TCS blocks come one after another. Type, count, and order are
99 * specified by the device tree as "qcom,tcs-config".
100 * - Each TCS block has some registers, then space for up to 16 commands.
102 * might be present. See ncpt (num cmds per TCS).
198 * tcs_is_free() - Return if a TCS is totally free.
200 * @tcs_id: The global ID of this TCS.
202 * Returns true if nobody has claimed this TCS (by setting tcs_in_use).
206 * Return: true if the given TCS is free.
228 struct tcs_group *tcs = &drv->tcs[type]; in tcs_invalidate() local
231 if (bitmap_empty(tcs->slots, MAX_TCS_SLOTS)) in tcs_invalidate()
234 for (m = tcs->offset; m < tcs->offset + tcs->num_tcs; m++) { in tcs_invalidate()
238 bitmap_zero(tcs->slots, MAX_TCS_SLOTS); in tcs_invalidate()
269 struct tcs_group *tcs; in get_tcs_for_msg() local
287 * dedicated TCS for active state use, then re-purpose a wake TCS to in get_tcs_for_msg()
292 tcs = &drv->tcs[type]; in get_tcs_for_msg()
293 if (msg->state == RPMH_ACTIVE_ONLY_STATE && !tcs->num_tcs) in get_tcs_for_msg()
294 tcs = &drv->tcs[WAKE_TCS]; in get_tcs_for_msg()
296 return tcs; in get_tcs_for_msg()
300 * get_req_from_tcs() - Get a stashed request that was xfering on the given TCS.
302 * @tcs_id: The global ID of this TCS.
318 struct tcs_group *tcs; in get_req_from_tcs() local
322 tcs = &drv->tcs[i]; in get_req_from_tcs()
323 if (tcs->mask & BIT(tcs_id)) in get_req_from_tcs()
324 return tcs->req[tcs_id - tcs->offset]; in get_req_from_tcs()
331 * __tcs_set_trigger() - Start xfer on a TCS or unset trigger on a borrowed TCS
333 * @tcs_id: The global ID of this TCS.
337 * transfer. That will un-trigger/disable the TCS from the last transfer
340 * If we borrowed a wake TCS for an active-only transfer we'll also call
342 * before using the TCS for wake purposes again.
352 * HW req: Clear the DRV_CONTROL and enable TCS again in __tcs_set_trigger()
363 /* Enable the AMC mode on the TCS and then trigger the TCS */ in __tcs_set_trigger()
372 * enable_tcs_irq() - Enable or disable interrupts on the given TCS.
374 * @tcs_id: The global ID of this TCS.
377 * We only ever call this when we borrow a wake TCS for an active-only
437 * If wake tcs was re-purposed for sending active in tcs_tx_done()
439 * disable interrupt for this TCS in tcs_tx_done()
441 if (!drv->tcs[ACTIVE_TCS].num_tcs) in tcs_tx_done()
444 /* Reclaim the TCS */ in tcs_tx_done()
451 * Disable interrupt for WAKE TCS to avoid being in tcs_tx_done()
455 if (!drv->tcs[ACTIVE_TCS].num_tcs) in tcs_tx_done()
467 * __tcs_buffer_write() - Write to TCS hardware from a request; don't trigger.
469 * @tcs_id: The global ID of this TCS.
470 * @cmd_id: The index within the TCS to start writing.
472 * pairs to program (but few enough that they all fit in one TCS).
512 * @tcs: A pointer to the tcs_group used for ACTIVE_ONLY transfers.
514 * pairs to program (but few enough that they all fit in one TCS).
529 static int check_for_req_inflight(struct rsc_drv *drv, struct tcs_group *tcs, in check_for_req_inflight() argument
535 int tcs_id = tcs->offset; in check_for_req_inflight()
537 for (i = 0; i < tcs->num_tcs; i++, tcs_id++) { in check_for_req_inflight()
556 * find_free_tcs() - Find free tcs in the given tcs_group; only for active.
557 * @tcs: A pointer to the active-only tcs_group (or the wake tcs_group if
562 * Return: The first tcs that's free.
564 static int find_free_tcs(struct tcs_group *tcs) in find_free_tcs() argument
568 for (i = 0; i < tcs->num_tcs; i++) { in find_free_tcs()
569 if (tcs_is_free(tcs->drv, tcs->offset + i)) in find_free_tcs()
570 return tcs->offset + i; in find_free_tcs()
577 * claim_tcs_for_req() - Claim a tcs in the given tcs_group; only for active.
579 * @tcs: The tcs_group used for ACTIVE_ONLY transfers.
582 * Claims a tcs in the given tcs_group while making sure that no existing cmd
588 * Return: The id of the claimed tcs or -EBUSY if a matching msg is in flight
591 static int claim_tcs_for_req(struct rsc_drv *drv, struct tcs_group *tcs, in claim_tcs_for_req() argument
600 ret = check_for_req_inflight(drv, tcs, msg); in claim_tcs_for_req()
604 return find_free_tcs(tcs); in claim_tcs_for_req()
615 * - To do the transfer, we will grab a whole TCS for ourselves--we don't
631 struct tcs_group *tcs; in rpmh_rsc_send_data() local
635 tcs = get_tcs_for_msg(drv, msg); in rpmh_rsc_send_data()
636 if (IS_ERR(tcs)) in rpmh_rsc_send_data()
637 return PTR_ERR(tcs); in rpmh_rsc_send_data()
641 /* Wait forever for a free tcs. It better be there eventually! */ in rpmh_rsc_send_data()
643 (tcs_id = claim_tcs_for_req(drv, tcs, msg)) >= 0, in rpmh_rsc_send_data()
646 tcs->req[tcs_id - tcs->offset] = msg; in rpmh_rsc_send_data()
648 if (msg->state == RPMH_ACTIVE_ONLY_STATE && tcs->type != ACTIVE_TCS) { in rpmh_rsc_send_data()
651 * repurposed TCS to avoid triggering them. tcs->slots will be in rpmh_rsc_send_data()
676 * @tcs: The tcs group to search.
679 * TCS to write to here.
681 * the command array of the returned TCS where the client should
685 * tcs->slots for.
689 static int find_slots(struct tcs_group *tcs, const struct tcs_request *msg, in find_slots() argument
695 /* Do over, until we can fit the full payload in a single TCS */ in find_slots()
697 slot = bitmap_find_next_zero_area(tcs->slots, MAX_TCS_SLOTS, in find_slots()
699 if (slot >= tcs->num_tcs * tcs->ncpt) in find_slots()
701 i += tcs->ncpt; in find_slots()
704 bitmap_set(tcs->slots, slot, msg->num_cmds); in find_slots()
706 offset = slot / tcs->ncpt; in find_slots()
707 *tcs_id = offset + tcs->offset; in find_slots()
708 *cmd_id = slot % tcs->ncpt; in find_slots()
728 struct tcs_group *tcs; in rpmh_rsc_write_ctrl_data() local
732 tcs = get_tcs_for_msg(drv, msg); in rpmh_rsc_write_ctrl_data()
733 if (IS_ERR(tcs)) in rpmh_rsc_write_ctrl_data()
734 return PTR_ERR(tcs); in rpmh_rsc_write_ctrl_data()
736 /* find the TCS id and the command in the TCS to write to */ in rpmh_rsc_write_ctrl_data()
737 ret = find_slots(tcs, msg, &tcs_id, &cmd_id); in rpmh_rsc_write_ctrl_data()
762 struct tcs_group *tcs = &drv->tcs[ACTIVE_TCS]; in rpmh_rsc_ctrlr_is_busy() local
766 * dedicated TCS for active state use, then re-purposed wake TCSes in rpmh_rsc_ctrlr_is_busy()
770 if (!tcs->num_tcs) in rpmh_rsc_ctrlr_is_busy()
771 tcs = &drv->tcs[WAKE_TCS]; in rpmh_rsc_ctrlr_is_busy()
773 for (m = tcs->offset; m < tcs->offset + tcs->num_tcs; m++) { in rpmh_rsc_ctrlr_is_busy()
872 struct tcs_group *tcs; in rpmh_probe_tcs_config() local
874 ret = of_property_read_u32(dn, "qcom,tcs-offset", &offset); in rpmh_probe_tcs_config()
888 n = of_property_count_u32_elems(dn, "qcom,tcs-config"); in rpmh_probe_tcs_config()
893 ret = of_property_read_u32_index(dn, "qcom,tcs-config", in rpmh_probe_tcs_config()
900 ret = of_property_read_u32_index(dn, "qcom,tcs-config", in rpmh_probe_tcs_config()
909 tcs = &drv->tcs[tcs_cfg[i].type]; in rpmh_probe_tcs_config()
910 if (tcs->drv) in rpmh_probe_tcs_config()
912 tcs->drv = drv; in rpmh_probe_tcs_config()
913 tcs->type = tcs_cfg[i].type; in rpmh_probe_tcs_config()
914 tcs->num_tcs = tcs_cfg[i].n; in rpmh_probe_tcs_config()
915 tcs->ncpt = ncpt; in rpmh_probe_tcs_config()
917 if (!tcs->num_tcs || tcs->type == CONTROL_TCS) in rpmh_probe_tcs_config()
920 if (st + tcs->num_tcs > max_tcs || in rpmh_probe_tcs_config()
921 st + tcs->num_tcs >= BITS_PER_BYTE * sizeof(tcs->mask)) in rpmh_probe_tcs_config()
924 tcs->mask = ((1 << tcs->num_tcs) - 1) << st; in rpmh_probe_tcs_config()
925 tcs->offset = st; in rpmh_probe_tcs_config()
926 st += tcs->num_tcs; in rpmh_probe_tcs_config()
1005 /* Enable the active TCS to send requests immediately */ in rpmh_rsc_probe()
1006 writel_relaxed(drv->tcs[ACTIVE_TCS].mask, in rpmh_rsc_probe()