+#define TISCI_BCDMA_BCHAN_VALID_PARAMS ( \
+ TI_SCI_MSG_VALUE_RM_UDMAP_CH_PAUSE_ON_ERR_VALID | \
+ TI_SCI_MSG_VALUE_RM_UDMAP_CH_EXTENDED_CH_TYPE_VALID)
+
+#define TISCI_BCDMA_TCHAN_VALID_PARAMS ( \
+ TI_SCI_MSG_VALUE_RM_UDMAP_CH_PAUSE_ON_ERR_VALID | \
+ TI_SCI_MSG_VALUE_RM_UDMAP_CH_TX_SUPR_TDPKT_VALID)
+
+#define TISCI_BCDMA_RCHAN_VALID_PARAMS ( \
+ TI_SCI_MSG_VALUE_RM_UDMAP_CH_PAUSE_ON_ERR_VALID)
+
+#define TISCI_UDMA_TCHAN_VALID_PARAMS ( \
+ TI_SCI_MSG_VALUE_RM_UDMAP_CH_PAUSE_ON_ERR_VALID | \
+ TI_SCI_MSG_VALUE_RM_UDMAP_CH_TX_FILT_EINFO_VALID | \
+ TI_SCI_MSG_VALUE_RM_UDMAP_CH_TX_FILT_PSWORDS_VALID | \
+ TI_SCI_MSG_VALUE_RM_UDMAP_CH_CHAN_TYPE_VALID | \
+ TI_SCI_MSG_VALUE_RM_UDMAP_CH_TX_SUPR_TDPKT_VALID | \
+ TI_SCI_MSG_VALUE_RM_UDMAP_CH_FETCH_SIZE_VALID | \
+ TI_SCI_MSG_VALUE_RM_UDMAP_CH_CQ_QNUM_VALID | \
+ TI_SCI_MSG_VALUE_RM_UDMAP_CH_ATYPE_VALID)
+
+#define TISCI_UDMA_RCHAN_VALID_PARAMS ( \
+ TI_SCI_MSG_VALUE_RM_UDMAP_CH_PAUSE_ON_ERR_VALID | \
+ TI_SCI_MSG_VALUE_RM_UDMAP_CH_FETCH_SIZE_VALID | \
+ TI_SCI_MSG_VALUE_RM_UDMAP_CH_CQ_QNUM_VALID | \
+ TI_SCI_MSG_VALUE_RM_UDMAP_CH_CHAN_TYPE_VALID | \
+ TI_SCI_MSG_VALUE_RM_UDMAP_CH_RX_IGNORE_SHORT_VALID | \
+ TI_SCI_MSG_VALUE_RM_UDMAP_CH_RX_IGNORE_LONG_VALID | \
+ TI_SCI_MSG_VALUE_RM_UDMAP_CH_RX_FLOWID_START_VALID | \
+ TI_SCI_MSG_VALUE_RM_UDMAP_CH_RX_FLOWID_CNT_VALID | \
+ TI_SCI_MSG_VALUE_RM_UDMAP_CH_ATYPE_VALID)
+
+static int bcdma_tisci_m2m_channel_config(struct udma_chan *uc)
+{
+ struct udma_dev *ud = uc->ud;
+ struct udma_tisci_rm *tisci_rm = &ud->tisci_rm;
+ const struct ti_sci_rm_udmap_ops *tisci_ops = tisci_rm->tisci_udmap_ops;
+ struct ti_sci_msg_rm_udmap_tx_ch_cfg req_tx = { 0 };
+ struct udma_bchan *bchan = uc->bchan;
+ int ret = 0;
+
+ req_tx.valid_params = TISCI_BCDMA_BCHAN_VALID_PARAMS;
+ req_tx.nav_id = tisci_rm->tisci_dev_id;
+ req_tx.extended_ch_type = TI_SCI_RM_BCDMA_EXTENDED_CH_TYPE_BCHAN;
+ req_tx.index = bchan->id;
+
+ ret = tisci_ops->tx_ch_cfg(tisci_rm->tisci, &req_tx);
+ if (ret)
+ dev_err(ud->dev, "bchan%d cfg failed %d\n", bchan->id, ret);
+
+ return ret;
+}
+
+static struct udma_bchan *__bcdma_reserve_bchan(struct udma_dev *ud, int id)
+{
+ if (id >= 0) {
+ if (test_bit(id, ud->bchan_map)) {
+ dev_err(ud->dev, "bchan%d is in use\n", id);
+ return ERR_PTR(-ENOENT);
+ }
+ } else {
+ id = find_next_zero_bit(ud->bchan_map, ud->bchan_cnt, 0);
+ if (id == ud->bchan_cnt)
+ return ERR_PTR(-ENOENT);
+ }
+ __set_bit(id, ud->bchan_map);
+ return &ud->bchans[id];
+}
+
+static int bcdma_get_bchan(struct udma_chan *uc)
+{
+ struct udma_dev *ud = uc->ud;
+
+ if (uc->bchan) {
+ dev_err(ud->dev, "chan%d: already have bchan%d allocated\n",
+ uc->id, uc->bchan->id);
+ return 0;
+ }
+
+ uc->bchan = __bcdma_reserve_bchan(ud, -1);
+ if (IS_ERR(uc->bchan))
+ return PTR_ERR(uc->bchan);
+
+ uc->tchan = uc->bchan;
+
+ return 0;
+}
+
+static void bcdma_put_bchan(struct udma_chan *uc)
+{
+ struct udma_dev *ud = uc->ud;
+
+ if (uc->bchan) {
+ dev_dbg(ud->dev, "chan%d: put bchan%d\n", uc->id,
+ uc->bchan->id);
+ __clear_bit(uc->bchan->id, ud->bchan_map);
+ uc->bchan = NULL;
+ uc->tchan = NULL;
+ }
+}
+
+static void bcdma_free_bchan_resources(struct udma_chan *uc)
+{
+ if (!uc->bchan)
+ return;
+
+ k3_nav_ringacc_ring_free(uc->bchan->tc_ring);
+ k3_nav_ringacc_ring_free(uc->bchan->t_ring);
+ uc->bchan->tc_ring = NULL;
+ uc->bchan->t_ring = NULL;
+
+ bcdma_put_bchan(uc);
+}
+
+static int bcdma_alloc_bchan_resources(struct udma_chan *uc)
+{
+ struct k3_nav_ring_cfg ring_cfg;
+ struct udma_dev *ud = uc->ud;
+ int ret;
+
+ ret = bcdma_get_bchan(uc);
+ if (ret)
+ return ret;
+
+ ret = k3_nav_ringacc_request_rings_pair(ud->ringacc, uc->bchan->id, -1,
+ &uc->bchan->t_ring,
+ &uc->bchan->tc_ring);
+ if (ret) {
+ ret = -EBUSY;
+ goto err_ring;
+ }
+
+ memset(&ring_cfg, 0, sizeof(ring_cfg));
+ ring_cfg.size = 16;
+ ring_cfg.elm_size = K3_NAV_RINGACC_RING_ELSIZE_8;
+ ring_cfg.mode = K3_NAV_RINGACC_RING_MODE_RING;
+
+ ret = k3_nav_ringacc_ring_cfg(uc->bchan->t_ring, &ring_cfg);
+ if (ret)
+ goto err_ringcfg;
+
+ return 0;
+
+err_ringcfg:
+ k3_nav_ringacc_ring_free(uc->bchan->tc_ring);
+ uc->bchan->tc_ring = NULL;
+ k3_nav_ringacc_ring_free(uc->bchan->t_ring);
+ uc->bchan->t_ring = NULL;
+err_ring:
+ bcdma_put_bchan(uc);
+
+ return ret;
+}
+
+static int bcdma_tisci_tx_channel_config(struct udma_chan *uc)
+{
+ struct udma_dev *ud = uc->ud;
+ struct udma_tisci_rm *tisci_rm = &ud->tisci_rm;
+ const struct ti_sci_rm_udmap_ops *tisci_ops = tisci_rm->tisci_udmap_ops;
+ struct udma_tchan *tchan = uc->tchan;
+ struct ti_sci_msg_rm_udmap_tx_ch_cfg req_tx = { 0 };
+ int ret = 0;
+
+ req_tx.valid_params = TISCI_BCDMA_TCHAN_VALID_PARAMS;
+ req_tx.nav_id = tisci_rm->tisci_dev_id;
+ req_tx.index = tchan->id;
+ req_tx.tx_supr_tdpkt = uc->config.notdpkt;
+ if (uc->config.ep_type == PSIL_EP_PDMA_XY &&
+ ud->match_data->flags & UDMA_FLAG_TDTYPE) {
+ /* wait for peer to complete the teardown for PDMAs */
+ req_tx.valid_params |=
+ TI_SCI_MSG_VALUE_RM_UDMAP_CH_TX_TDTYPE_VALID;
+ req_tx.tx_tdtype = 1;
+ }
+
+ ret = tisci_ops->tx_ch_cfg(tisci_rm->tisci, &req_tx);
+ if (ret)
+ dev_err(ud->dev, "tchan%d cfg failed %d\n", tchan->id, ret);
+
+ return ret;
+}
+
+#define pktdma_tisci_tx_channel_config bcdma_tisci_tx_channel_config
+
+static int pktdma_tisci_rx_channel_config(struct udma_chan *uc)
+{
+ struct udma_dev *ud = uc->ud;
+ struct udma_tisci_rm *tisci_rm = &ud->tisci_rm;
+ const struct ti_sci_rm_udmap_ops *tisci_ops = tisci_rm->tisci_udmap_ops;
+ struct ti_sci_msg_rm_udmap_rx_ch_cfg req_rx = { 0 };
+ struct ti_sci_msg_rm_udmap_flow_cfg flow_req = { 0 };
+ int ret = 0;
+
+ req_rx.valid_params = TISCI_BCDMA_RCHAN_VALID_PARAMS;
+ req_rx.nav_id = tisci_rm->tisci_dev_id;
+ req_rx.index = uc->rchan->id;
+
+ ret = tisci_ops->rx_ch_cfg(tisci_rm->tisci, &req_rx);
+ if (ret) {
+ dev_err(ud->dev, "rchan%d cfg failed %d\n", uc->rchan->id, ret);
+ return ret;
+ }
+
+ flow_req.valid_params =
+ TI_SCI_MSG_VALUE_RM_UDMAP_FLOW_EINFO_PRESENT_VALID |
+ TI_SCI_MSG_VALUE_RM_UDMAP_FLOW_PSINFO_PRESENT_VALID |
+ TI_SCI_MSG_VALUE_RM_UDMAP_FLOW_ERROR_HANDLING_VALID;
+
+ flow_req.nav_id = tisci_rm->tisci_dev_id;
+ flow_req.flow_index = uc->rflow->id;
+
+ if (uc->config.needs_epib)
+ flow_req.rx_einfo_present = 1;
+ else
+ flow_req.rx_einfo_present = 0;
+ if (uc->config.psd_size)
+ flow_req.rx_psinfo_present = 1;
+ else
+ flow_req.rx_psinfo_present = 0;
+ flow_req.rx_error_handling = 1;
+
+ ret = tisci_ops->rx_flow_cfg(tisci_rm->tisci, &flow_req);
+
+ if (ret)
+ dev_err(ud->dev, "flow%d config failed: %d\n", uc->rflow->id,
+ ret);
+
+ return ret;
+}
+
+static int bcdma_alloc_chan_resources(struct udma_chan *uc)
+{
+ int ret;
+
+ uc->config.pkt_mode = false;
+
+ switch (uc->config.dir) {
+ case DMA_MEM_TO_MEM:
+ /* Non synchronized - mem to mem type of transfer */
+ dev_dbg(uc->ud->dev, "%s: chan%d as MEM-to-MEM\n", __func__,
+ uc->id);
+
+ ret = bcdma_alloc_bchan_resources(uc);
+ if (ret)
+ return ret;
+
+ ret = bcdma_tisci_m2m_channel_config(uc);
+ break;
+ default:
+ /* Can not happen */
+ dev_err(uc->ud->dev, "%s: chan%d invalid direction (%u)\n",
+ __func__, uc->id, uc->config.dir);
+ return -EINVAL;
+ }
+
+ /* check if the channel configuration was successful */
+ if (ret)
+ goto err_res_free;
+
+ if (udma_is_chan_running(uc)) {
+ dev_warn(uc->ud->dev, "chan%d: is running!\n", uc->id);
+ udma_stop(uc);
+ if (udma_is_chan_running(uc)) {
+ dev_err(uc->ud->dev, "chan%d: won't stop!\n", uc->id);
+ goto err_res_free;
+ }
+ }
+
+ udma_reset_rings(uc);
+
+ return 0;
+
+err_res_free:
+ bcdma_free_bchan_resources(uc);
+ udma_free_tx_resources(uc);
+ udma_free_rx_resources(uc);
+
+ udma_reset_uchan(uc);
+
+ return ret;
+}
+
+static int pktdma_alloc_chan_resources(struct udma_chan *uc)
+{
+ struct udma_dev *ud = uc->ud;
+ int ret;
+
+ switch (uc->config.dir) {
+ case DMA_MEM_TO_DEV:
+ /* Slave transfer synchronized - mem to dev (TX) trasnfer */
+ dev_dbg(uc->ud->dev, "%s: chan%d as MEM-to-DEV\n", __func__,
+ uc->id);
+
+ ret = udma_alloc_tx_resources(uc);
+ if (ret) {
+ uc->config.remote_thread_id = -1;
+ return ret;
+ }
+
+ uc->config.src_thread = ud->psil_base + uc->tchan->id;
+ uc->config.dst_thread = uc->config.remote_thread_id;
+ uc->config.dst_thread |= K3_PSIL_DST_THREAD_ID_OFFSET;
+
+ ret = pktdma_tisci_tx_channel_config(uc);
+ break;
+ case DMA_DEV_TO_MEM:
+ /* Slave transfer synchronized - dev to mem (RX) trasnfer */
+ dev_dbg(uc->ud->dev, "%s: chan%d as DEV-to-MEM\n", __func__,
+ uc->id);
+
+ ret = udma_alloc_rx_resources(uc);
+ if (ret) {
+ uc->config.remote_thread_id = -1;
+ return ret;
+ }
+
+ uc->config.src_thread = uc->config.remote_thread_id;
+ uc->config.dst_thread = (ud->psil_base + uc->rchan->id) |
+ K3_PSIL_DST_THREAD_ID_OFFSET;
+
+ ret = pktdma_tisci_rx_channel_config(uc);
+ break;
+ default:
+ /* Can not happen */
+ dev_err(uc->ud->dev, "%s: chan%d invalid direction (%u)\n",
+ __func__, uc->id, uc->config.dir);
+ return -EINVAL;
+ }
+
+ /* check if the channel configuration was successful */
+ if (ret)
+ goto err_res_free;
+
+ /* PSI-L pairing */
+ ret = udma_navss_psil_pair(ud, uc->config.src_thread, uc->config.dst_thread);
+ if (ret) {
+ dev_err(ud->dev, "PSI-L pairing failed: 0x%04x -> 0x%04x\n",
+ uc->config.src_thread, uc->config.dst_thread);
+ goto err_res_free;
+ }
+
+ if (udma_is_chan_running(uc)) {
+ dev_warn(ud->dev, "chan%d: is running!\n", uc->id);
+ udma_stop(uc);
+ if (udma_is_chan_running(uc)) {
+ dev_err(ud->dev, "chan%d: won't stop!\n", uc->id);
+ goto err_res_free;
+ }
+ }
+
+ udma_reset_rings(uc);
+
+ if (uc->tchan)
+ dev_dbg(ud->dev,
+ "chan%d: tchan%d, tflow%d, Remote thread: 0x%04x\n",
+ uc->id, uc->tchan->id, uc->tchan->tflow_id,
+ uc->config.remote_thread_id);
+ else if (uc->rchan)
+ dev_dbg(ud->dev,
+ "chan%d: rchan%d, rflow%d, Remote thread: 0x%04x\n",
+ uc->id, uc->rchan->id, uc->rflow->id,
+ uc->config.remote_thread_id);
+ return 0;
+
+err_res_free:
+ udma_free_tx_resources(uc);
+ udma_free_rx_resources(uc);
+
+ udma_reset_uchan(uc);
+
+ return ret;
+}
+