From: Peter Ujfalusi <peter.ujfalusi@ti.com> To: <vkoul@kernel.org>, <nm@ti.com>, <ssantosh@kernel.org>, <robh+dt@kernel.org>, <vigneshr@ti.com> Cc: <dan.j.williams@intel.com>, <t-kristo@ti.com>, <lokeshvutla@ti.com>, <linux-arm-kernel@lists.infradead.org>, <linux-kernel@vger.kernel.org>, <devicetree@vger.kernel.org>, <dmaengine@vger.kernel.org> Subject: [PATCH 18/18] dmaengine: ti: k3-udma-glue: Add support for K3 PKTDMA Date: Wed, 30 Sep 2020 12:14:12 +0300 [thread overview] Message-ID: <20200930091412.8020-19-peter.ujfalusi@ti.com> (raw) In-Reply-To: <20200930091412.8020-1-peter.ujfalusi@ti.com> From: Vignesh Raghavendra <vigneshr@ti.com> This commit adds support for PKTDMA in k3-udma glue driver. Use new psil_endpoint_config struct to get static data for a given channel or a flow during setup. Make sure that the RX flows being mapped to a RX channel is within the range of flows that is been allocated to that RX channel. Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> --- drivers/dma/ti/k3-udma-glue.c | 272 ++++++++++++++++++++++++++----- drivers/dma/ti/k3-udma-private.c | 24 +++ drivers/dma/ti/k3-udma.h | 4 + include/linux/dma/k3-udma-glue.h | 8 + 4 files changed, 270 insertions(+), 38 deletions(-) diff --git a/drivers/dma/ti/k3-udma-glue.c b/drivers/dma/ti/k3-udma-glue.c index f39825ce288a..6730bc296043 100644 --- a/drivers/dma/ti/k3-udma-glue.c +++ b/drivers/dma/ti/k3-udma-glue.c @@ -22,6 +22,7 @@ struct k3_udma_glue_common { struct device *dev; + struct device chan_dev; struct udma_dev *udmax; const struct udma_tisci_rm *tisci_rm; struct k3_ringacc *ringacc; @@ -32,7 +33,8 @@ struct k3_udma_glue_common { bool epib; u32 psdata_size; u32 swdata_size; - u32 atype; + u32 atype_asel; + struct psil_endpoint_config *ep_config; }; struct k3_udma_glue_tx_channel { @@ -53,6 +55,8 @@ struct k3_udma_glue_tx_channel { bool tx_filt_einfo; bool tx_filt_pswords; bool tx_supr_tdpkt; + + int udma_tflow_id; }; struct k3_udma_glue_rx_flow { @@ -104,7 +108,6 @@ static int of_k3_udma_glue_parse_chn(struct device_node *chn_np, const char *name, struct k3_udma_glue_common *common, bool tx_chn) { - struct psil_endpoint_config *ep_config; struct of_phandle_args dma_spec; u32 thread_id; int ret = 0; @@ -121,15 +124,26 @@ static int of_k3_udma_glue_parse_chn(struct device_node *chn_np, &dma_spec)) return -ENOENT; + ret = of_k3_udma_glue_parse(dma_spec.np, common); + if (ret) + goto out_put_spec; + thread_id = dma_spec.args[0]; if (dma_spec.args_count == 2) { - if (dma_spec.args[1] > 2) { + if (dma_spec.args[1] > 2 && !xudma_is_pktdma(common->udmax)) { dev_err(common->dev, "Invalid channel atype: %u\n", dma_spec.args[1]); ret = -EINVAL; goto out_put_spec; } - common->atype = dma_spec.args[1]; + if (dma_spec.args[1] > 15 && xudma_is_pktdma(common->udmax)) { + dev_err(common->dev, "Invalid channel asel: %u\n", + dma_spec.args[1]); + ret = -EINVAL; + goto out_put_spec; + } + + common->atype_asel = dma_spec.args[1]; } if (tx_chn && !(thread_id & K3_PSIL_DST_THREAD_ID_OFFSET)) { @@ -143,25 +157,23 @@ static int of_k3_udma_glue_parse_chn(struct device_node *chn_np, } /* get psil endpoint config */ - ep_config = psil_get_ep_config(thread_id); - if (IS_ERR(ep_config)) { + common->ep_config = psil_get_ep_config(thread_id); + if (IS_ERR(common->ep_config)) { dev_err(common->dev, "No configuration for psi-l thread 0x%04x\n", thread_id); - ret = PTR_ERR(ep_config); + ret = PTR_ERR(common->ep_config); goto out_put_spec; } - common->epib = ep_config->needs_epib; - common->psdata_size = ep_config->psd_size; + common->epib = common->ep_config->needs_epib; + common->psdata_size = common->ep_config->psd_size; if (tx_chn) common->dst_thread = thread_id; else common->src_thread = thread_id; - ret = of_k3_udma_glue_parse(dma_spec.np, common); - out_put_spec: of_node_put(dma_spec.np); return ret; @@ -227,7 +239,7 @@ static int k3_udma_glue_cfg_tx_chn(struct k3_udma_glue_tx_channel *tx_chn) req.tx_supr_tdpkt = 1; req.tx_fetch_size = tx_chn->common.hdesc_size >> 2; req.txcq_qnum = k3_ringacc_get_ring_id(tx_chn->ringtxcq); - req.tx_atype = tx_chn->common.atype; + req.tx_atype = tx_chn->common.atype_asel; return tisci_rm->tisci_udmap_ops->tx_ch_cfg(tisci_rm->tisci, &req); } @@ -259,8 +271,14 @@ struct k3_udma_glue_tx_channel *k3_udma_glue_request_tx_chn(struct device *dev, tx_chn->common.psdata_size, tx_chn->common.swdata_size); + if (xudma_is_pktdma(tx_chn->common.udmax)) + tx_chn->udma_tchan_id = tx_chn->common.ep_config->mapped_channel_id; + else + tx_chn->udma_tchan_id = -1; + /* request and cfg UDMAP TX channel */ - tx_chn->udma_tchanx = xudma_tchan_get(tx_chn->common.udmax, -1); + tx_chn->udma_tchanx = xudma_tchan_get(tx_chn->common.udmax, + tx_chn->udma_tchan_id); if (IS_ERR(tx_chn->udma_tchanx)) { ret = PTR_ERR(tx_chn->udma_tchanx); dev_err(dev, "UDMAX tchanx get err %d\n", ret); @@ -268,11 +286,33 @@ struct k3_udma_glue_tx_channel *k3_udma_glue_request_tx_chn(struct device *dev, } tx_chn->udma_tchan_id = xudma_tchan_get_id(tx_chn->udma_tchanx); + tx_chn->common.chan_dev.parent = xudma_get_device(tx_chn->common.udmax); + dev_set_name(&tx_chn->common.chan_dev, "tchan%d-0x%04x", + tx_chn->udma_tchan_id, tx_chn->common.dst_thread); + ret = device_register(&tx_chn->common.chan_dev); + if (ret) { + dev_err(dev, "Channel Device registration failed %d\n", ret); + tx_chn->common.chan_dev.parent = NULL; + goto err; + } + + if (xudma_is_pktdma(tx_chn->common.udmax)) { + /* prepare the channel device as coherent */ + tx_chn->common.chan_dev.dma_coherent = true; + dma_coerce_mask_and_coherent(&tx_chn->common.chan_dev, + DMA_BIT_MASK(48)); + } + atomic_set(&tx_chn->free_pkts, cfg->txcq_cfg.size); + if (xudma_is_pktdma(tx_chn->common.udmax)) + tx_chn->udma_tflow_id = tx_chn->common.ep_config->default_flow_id; + else + tx_chn->udma_tflow_id = tx_chn->udma_tchan_id; + /* request and cfg rings */ ret = k3_ringacc_request_rings_pair(tx_chn->common.ringacc, - tx_chn->udma_tchan_id, -1, + tx_chn->udma_tflow_id, -1, &tx_chn->ringtx, &tx_chn->ringtxcq); if (ret) { @@ -284,6 +324,12 @@ struct k3_udma_glue_tx_channel *k3_udma_glue_request_tx_chn(struct device *dev, cfg->tx_cfg.dma_dev = k3_udma_glue_tx_get_dma_device(tx_chn); cfg->txcq_cfg.dma_dev = cfg->tx_cfg.dma_dev; + /* Set the ASEL value for DMA rings of PKTDMA */ + if (xudma_is_pktdma(tx_chn->common.udmax)) { + cfg->tx_cfg.asel = tx_chn->common.atype_asel; + cfg->txcq_cfg.asel = tx_chn->common.atype_asel; + } + ret = k3_ringacc_ring_cfg(tx_chn->ringtx, &cfg->tx_cfg); if (ret) { dev_err(dev, "Failed to cfg ringtx %d\n", ret); @@ -348,6 +394,11 @@ void k3_udma_glue_release_tx_chn(struct k3_udma_glue_tx_channel *tx_chn) if (tx_chn->ringtx) k3_ringacc_ring_free(tx_chn->ringtx); + + if (tx_chn->common.chan_dev.parent) { + device_unregister(&tx_chn->common.chan_dev); + tx_chn->common.chan_dev.parent = NULL; + } } EXPORT_SYMBOL_GPL(k3_udma_glue_release_tx_chn); @@ -441,13 +492,10 @@ void k3_udma_glue_reset_tx_chn(struct k3_udma_glue_tx_channel *tx_chn, void *data, void (*cleanup)(void *data, dma_addr_t desc_dma)) { + struct device *dev = tx_chn->common.dev; dma_addr_t desc_dma; int occ_tx, i, ret; - /* reset TXCQ as it is not input for udma - expected to be empty */ - if (tx_chn->ringtxcq) - k3_ringacc_ring_reset(tx_chn->ringtxcq); - /* * TXQ reset need to be special way as it is input for udma and its * state cached by udma, so: @@ -456,17 +504,20 @@ void k3_udma_glue_reset_tx_chn(struct k3_udma_glue_tx_channel *tx_chn, * 3) reset TXQ in a special way */ occ_tx = k3_ringacc_ring_get_occ(tx_chn->ringtx); - dev_dbg(tx_chn->common.dev, "TX reset occ_tx %u\n", occ_tx); + dev_dbg(dev, "TX reset occ_tx %u\n", occ_tx); for (i = 0; i < occ_tx; i++) { ret = k3_ringacc_ring_pop(tx_chn->ringtx, &desc_dma); if (ret) { - dev_err(tx_chn->common.dev, "TX reset pop %d\n", ret); + if (ret != -ENODATA) + dev_err(dev, "TX reset pop %d\n", ret); break; } cleanup(data, desc_dma); } + /* reset TXCQ as it is not input for udma - expected to be empty */ + k3_ringacc_ring_reset(tx_chn->ringtxcq); k3_ringacc_ring_reset_dma(tx_chn->ringtx, occ_tx); } EXPORT_SYMBOL_GPL(k3_udma_glue_reset_tx_chn); @@ -485,7 +536,12 @@ EXPORT_SYMBOL_GPL(k3_udma_glue_tx_get_txcq_id); int k3_udma_glue_tx_get_irq(struct k3_udma_glue_tx_channel *tx_chn) { - tx_chn->virq = k3_ringacc_get_ring_irq_num(tx_chn->ringtxcq); + if (xudma_is_pktdma(tx_chn->common.udmax)) { + tx_chn->virq = xudma_pktdma_tflow_get_irq(tx_chn->common.udmax, + tx_chn->udma_tflow_id); + } else { + tx_chn->virq = k3_ringacc_get_ring_irq_num(tx_chn->ringtxcq); + } return tx_chn->virq; } @@ -494,10 +550,36 @@ EXPORT_SYMBOL_GPL(k3_udma_glue_tx_get_irq); struct device * k3_udma_glue_tx_get_dma_device(struct k3_udma_glue_tx_channel *tx_chn) { + if (xudma_is_pktdma(tx_chn->common.udmax) && + (tx_chn->common.atype_asel == 14 || tx_chn->common.atype_asel == 15)) + return &tx_chn->common.chan_dev; + return xudma_get_device(tx_chn->common.udmax); } EXPORT_SYMBOL_GPL(k3_udma_glue_tx_get_dma_device); +void k3_udma_glue_tx_dma_to_cppi5_addr(struct k3_udma_glue_tx_channel *tx_chn, + dma_addr_t *addr) +{ + if (!xudma_is_pktdma(tx_chn->common.udmax) || + !tx_chn->common.atype_asel) + return; + + *addr |= (u64)tx_chn->common.atype_asel << K3_ADDRESS_ASEL_SHIFT; +} +EXPORT_SYMBOL_GPL(k3_udma_glue_tx_dma_to_cppi5_addr); + +void k3_udma_glue_tx_cppi5_to_dma_addr(struct k3_udma_glue_tx_channel *tx_chn, + dma_addr_t *addr) +{ + if (!xudma_is_pktdma(tx_chn->common.udmax) || + !tx_chn->common.atype_asel) + return; + + *addr &= (u64)GENMASK(K3_ADDRESS_ASEL_SHIFT - 1, 0); +} +EXPORT_SYMBOL_GPL(k3_udma_glue_tx_cppi5_to_dma_addr); + static int k3_udma_glue_cfg_rx_chn(struct k3_udma_glue_rx_channel *rx_chn) { const struct udma_tisci_rm *tisci_rm = rx_chn->common.tisci_rm; @@ -509,8 +591,6 @@ static int k3_udma_glue_cfg_rx_chn(struct k3_udma_glue_rx_channel *rx_chn) req.valid_params = 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_FLOWID_START_VALID | - TI_SCI_MSG_VALUE_RM_UDMAP_CH_RX_FLOWID_CNT_VALID | TI_SCI_MSG_VALUE_RM_UDMAP_CH_ATYPE_VALID; req.nav_id = tisci_rm->tisci_dev_id; @@ -522,13 +602,16 @@ static int k3_udma_glue_cfg_rx_chn(struct k3_udma_glue_rx_channel *rx_chn) * req.rxcq_qnum = k3_ringacc_get_ring_id(rx_chn->flows[0].ringrx); */ req.rxcq_qnum = 0xFFFF; - if (rx_chn->flow_num && rx_chn->flow_id_base != rx_chn->udma_rchan_id) { + if (!xudma_is_pktdma(rx_chn->common.udmax) && rx_chn->flow_num && + rx_chn->flow_id_base != rx_chn->udma_rchan_id) { /* Default flow + extra ones */ + req.valid_params |= TI_SCI_MSG_VALUE_RM_UDMAP_CH_RX_FLOWID_START_VALID | + TI_SCI_MSG_VALUE_RM_UDMAP_CH_RX_FLOWID_CNT_VALID; req.flowid_start = rx_chn->flow_id_base; req.flowid_cnt = rx_chn->flow_num; } req.rx_chan_type = TI_SCI_RM_UDMAP_CHAN_TYPE_PKT_PBRR; - req.rx_atype = rx_chn->common.atype; + req.rx_atype = rx_chn->common.atype_asel; ret = tisci_rm->tisci_udmap_ops->rx_ch_cfg(tisci_rm->tisci, &req); if (ret) @@ -582,10 +665,18 @@ static int k3_udma_glue_cfg_rx_flow(struct k3_udma_glue_rx_channel *rx_chn, goto err_rflow_put; } + if (xudma_is_pktdma(rx_chn->common.udmax)) { + rx_ring_id = flow->udma_rflow_id + + xudma_get_rflow_ring_offset(rx_chn->common.udmax); + rx_ringfdq_id = 0; + } else { + rx_ring_id = flow_cfg->ring_rxq_id; + rx_ringfdq_id = flow_cfg->ring_rxfdq0_id; + } + /* request and cfg rings */ ret = k3_ringacc_request_rings_pair(rx_chn->common.ringacc, - flow_cfg->ring_rxfdq0_id, - flow_cfg->ring_rxq_id, + rx_ringfdq_id, rx_ring_id, &flow->ringrxfdq, &flow->ringrx); if (ret) { @@ -597,6 +688,12 @@ static int k3_udma_glue_cfg_rx_flow(struct k3_udma_glue_rx_channel *rx_chn, flow_cfg->rx_cfg.dma_dev = k3_udma_glue_rx_get_dma_device(rx_chn); flow_cfg->rxfdq_cfg.dma_dev = flow_cfg->rx_cfg.dma_dev; + /* Set the ASEL value for DMA rings of PKTDMA */ + if (xudma_is_pktdma(rx_chn->common.udmax)) { + flow_cfg->rx_cfg.asel = rx_chn->common.atype_asel; + flow_cfg->rxfdq_cfg.asel = rx_chn->common.atype_asel; + } + ret = k3_ringacc_ring_cfg(flow->ringrx, &flow_cfg->rx_cfg); if (ret) { dev_err(dev, "Failed to cfg ringrx %d\n", ret); @@ -755,6 +852,7 @@ k3_udma_glue_request_rx_chn_priv(struct device *dev, const char *name, struct k3_udma_glue_rx_channel_cfg *cfg) { struct k3_udma_glue_rx_channel *rx_chn; + struct psil_endpoint_config *ep_cfg; int ret, i; if (cfg->flow_id_num <= 0) @@ -782,8 +880,16 @@ k3_udma_glue_request_rx_chn_priv(struct device *dev, const char *name, rx_chn->common.psdata_size, rx_chn->common.swdata_size); + ep_cfg = rx_chn->common.ep_config; + + if (xudma_is_pktdma(rx_chn->common.udmax)) + rx_chn->udma_rchan_id = ep_cfg->mapped_channel_id; + else + rx_chn->udma_rchan_id = -1; + /* request and cfg UDMAP RX channel */ - rx_chn->udma_rchanx = xudma_rchan_get(rx_chn->common.udmax, -1); + rx_chn->udma_rchanx = xudma_rchan_get(rx_chn->common.udmax, + rx_chn->udma_rchan_id); if (IS_ERR(rx_chn->udma_rchanx)) { ret = PTR_ERR(rx_chn->udma_rchanx); dev_err(dev, "UDMAX rchanx get err %d\n", ret); @@ -791,12 +897,47 @@ k3_udma_glue_request_rx_chn_priv(struct device *dev, const char *name, } rx_chn->udma_rchan_id = xudma_rchan_get_id(rx_chn->udma_rchanx); - rx_chn->flow_num = cfg->flow_id_num; - rx_chn->flow_id_base = cfg->flow_id_base; + rx_chn->common.chan_dev.parent = xudma_get_device(rx_chn->common.udmax); + dev_set_name(&rx_chn->common.chan_dev, "rchan%d-0x%04x", + rx_chn->udma_rchan_id, rx_chn->common.src_thread); + ret = device_register(&rx_chn->common.chan_dev); + if (ret) { + dev_err(dev, "Channel Device registration failed %d\n", ret); + rx_chn->common.chan_dev.parent = NULL; + goto err; + } - /* Use RX channel id as flow id: target dev can't generate flow_id */ - if (cfg->flow_id_use_rxchan_id) - rx_chn->flow_id_base = rx_chn->udma_rchan_id; + if (xudma_is_pktdma(rx_chn->common.udmax)) { + /* prepare the channel device as coherent */ + rx_chn->common.chan_dev.dma_coherent = true; + dma_coerce_mask_and_coherent(&rx_chn->common.chan_dev, + DMA_BIT_MASK(48)); + } + + if (xudma_is_pktdma(rx_chn->common.udmax)) { + int flow_start = cfg->flow_id_base; + int flow_end; + + if (flow_start == -1) + flow_start = ep_cfg->flow_start; + + flow_end = flow_start + cfg->flow_id_num - 1; + if (flow_start < ep_cfg->flow_start || + flow_end > (ep_cfg->flow_start + ep_cfg->flow_num - 1)) { + dev_err(dev, "Invalid flow range requested\n"); + ret = -EINVAL; + goto err; + } + rx_chn->flow_id_base = flow_start; + } else { + rx_chn->flow_id_base = cfg->flow_id_base; + + /* Use RX channel id as flow id: target dev can't generate flow_id */ + if (cfg->flow_id_use_rxchan_id) + rx_chn->flow_id_base = rx_chn->udma_rchan_id; + } + + rx_chn->flow_num = cfg->flow_id_num; rx_chn->flows = devm_kcalloc(dev, rx_chn->flow_num, sizeof(*rx_chn->flows), GFP_KERNEL); @@ -899,6 +1040,23 @@ k3_udma_glue_request_remote_rx_chn(struct device *dev, const char *name, goto err; } + rx_chn->common.chan_dev.parent = xudma_get_device(rx_chn->common.udmax); + dev_set_name(&rx_chn->common.chan_dev, "rchan_remote-0x%04x", + rx_chn->common.src_thread); + ret = device_register(&rx_chn->common.chan_dev); + if (ret) { + dev_err(dev, "Channel Device registration failed %d\n", ret); + rx_chn->common.chan_dev.parent = NULL; + goto err; + } + + if (xudma_is_pktdma(rx_chn->common.udmax)) { + /* prepare the channel device as coherent */ + rx_chn->common.chan_dev.dma_coherent = true; + dma_coerce_mask_and_coherent(&rx_chn->common.chan_dev, + DMA_BIT_MASK(48)); + } + ret = k3_udma_glue_allocate_rx_flows(rx_chn, cfg); if (ret) goto err; @@ -951,6 +1109,11 @@ void k3_udma_glue_release_rx_chn(struct k3_udma_glue_rx_channel *rx_chn) if (!IS_ERR_OR_NULL(rx_chn->udma_rchanx)) xudma_rchan_put(rx_chn->common.udmax, rx_chn->udma_rchanx); + + if (rx_chn->common.chan_dev.parent) { + device_unregister(&rx_chn->common.chan_dev); + rx_chn->common.chan_dev.parent = NULL; + } } EXPORT_SYMBOL_GPL(k3_udma_glue_release_rx_chn); @@ -1143,12 +1306,10 @@ void k3_udma_glue_reset_rx_chn(struct k3_udma_glue_rx_channel *rx_chn, /* reset RXCQ as it is not input for udma - expected to be empty */ occ_rx = k3_ringacc_ring_get_occ(flow->ringrx); dev_dbg(dev, "RX reset flow %u occ_rx %u\n", flow_num, occ_rx); - if (flow->ringrx) - k3_ringacc_ring_reset(flow->ringrx); /* Skip RX FDQ in case one FDQ is used for the set of flows */ if (skip_fdq) - return; + goto do_reset; /* * RX FDQ reset need to be special way as it is input for udma and its @@ -1163,13 +1324,17 @@ void k3_udma_glue_reset_rx_chn(struct k3_udma_glue_rx_channel *rx_chn, for (i = 0; i < occ_rx; i++) { ret = k3_ringacc_ring_pop(flow->ringrxfdq, &desc_dma); if (ret) { - dev_err(dev, "RX reset pop %d\n", ret); + if (ret != -ENODATA) + dev_err(dev, "RX reset pop %d\n", ret); break; } cleanup(data, desc_dma); } k3_ringacc_ring_reset_dma(flow->ringrxfdq, occ_rx); + +do_reset: + k3_ringacc_ring_reset(flow->ringrx); } EXPORT_SYMBOL_GPL(k3_udma_glue_reset_rx_chn); @@ -1199,7 +1364,12 @@ int k3_udma_glue_rx_get_irq(struct k3_udma_glue_rx_channel *rx_chn, flow = &rx_chn->flows[flow_num]; - flow->virq = k3_ringacc_get_ring_irq_num(flow->ringrx); + if (xudma_is_pktdma(rx_chn->common.udmax)) { + flow->virq = xudma_pktdma_rflow_get_irq(rx_chn->common.udmax, + flow->udma_rflow_id); + } else { + flow->virq = k3_ringacc_get_ring_irq_num(flow->ringrx); + } return flow->virq; } @@ -1208,6 +1378,32 @@ EXPORT_SYMBOL_GPL(k3_udma_glue_rx_get_irq); struct device * k3_udma_glue_rx_get_dma_device(struct k3_udma_glue_rx_channel *rx_chn) { + if (xudma_is_pktdma(rx_chn->common.udmax) && + (rx_chn->common.atype_asel == 14 || rx_chn->common.atype_asel == 15)) + return &rx_chn->common.chan_dev; + return xudma_get_device(rx_chn->common.udmax); } EXPORT_SYMBOL_GPL(k3_udma_glue_rx_get_dma_device); + +void k3_udma_glue_rx_dma_to_cppi5_addr(struct k3_udma_glue_rx_channel *rx_chn, + dma_addr_t *addr) +{ + if (!xudma_is_pktdma(rx_chn->common.udmax) || + !rx_chn->common.atype_asel) + return; + + *addr |= (u64)rx_chn->common.atype_asel << K3_ADDRESS_ASEL_SHIFT; +} +EXPORT_SYMBOL_GPL(k3_udma_glue_rx_dma_to_cppi5_addr); + +void k3_udma_glue_rx_cppi5_to_dma_addr(struct k3_udma_glue_rx_channel *rx_chn, + dma_addr_t *addr) +{ + if (!xudma_is_pktdma(rx_chn->common.udmax) || + !rx_chn->common.atype_asel) + return; + + *addr &= (u64)GENMASK(K3_ADDRESS_ASEL_SHIFT - 1, 0); +} +EXPORT_SYMBOL_GPL(k3_udma_glue_rx_cppi5_to_dma_addr); diff --git a/drivers/dma/ti/k3-udma-private.c b/drivers/dma/ti/k3-udma-private.c index f0cecd29cff1..cef4890cfa42 100644 --- a/drivers/dma/ti/k3-udma-private.c +++ b/drivers/dma/ti/k3-udma-private.c @@ -151,3 +151,27 @@ void xudma_##res##rt_write(struct udma_##res *p, int reg, u32 val) \ EXPORT_SYMBOL(xudma_##res##rt_write) XUDMA_RT_IO_FUNCTIONS(tchan); XUDMA_RT_IO_FUNCTIONS(rchan); + +int xudma_is_pktdma(struct udma_dev *ud) +{ + return ud->match_data->type == DMA_TYPE_PKTDMA; +} +EXPORT_SYMBOL(xudma_is_pktdma); + +int xudma_pktdma_tflow_get_irq(struct udma_dev *ud, int udma_tflow_id) +{ + const struct udma_oes_offsets *oes = &ud->soc_data->oes; + + return ti_sci_inta_msi_get_virq(ud->dev, udma_tflow_id + + oes->pktdma_tchan_flow); +} +EXPORT_SYMBOL(xudma_pktdma_tflow_get_irq); + +int xudma_pktdma_rflow_get_irq(struct udma_dev *ud, int udma_rflow_id) +{ + const struct udma_oes_offsets *oes = &ud->soc_data->oes; + + return ti_sci_inta_msi_get_virq(ud->dev, udma_rflow_id + + oes->pktdma_rchan_flow); +} +EXPORT_SYMBOL(xudma_pktdma_rflow_get_irq); diff --git a/drivers/dma/ti/k3-udma.h b/drivers/dma/ti/k3-udma.h index 078cc3aa4126..c02080bb5866 100644 --- a/drivers/dma/ti/k3-udma.h +++ b/drivers/dma/ti/k3-udma.h @@ -156,4 +156,8 @@ void xudma_rchanrt_write(struct udma_rchan *rchan, int reg, u32 val); bool xudma_rflow_is_gp(struct udma_dev *ud, int id); int xudma_get_rflow_ring_offset(struct udma_dev *ud); +int xudma_is_pktdma(struct udma_dev *ud); + +int xudma_pktdma_tflow_get_irq(struct udma_dev *ud, int udma_tflow_id); +int xudma_pktdma_rflow_get_irq(struct udma_dev *ud, int udma_rflow_id); #endif /* K3_UDMA_H_ */ diff --git a/include/linux/dma/k3-udma-glue.h b/include/linux/dma/k3-udma-glue.h index d7c12f31377c..e443be4d3b4b 100644 --- a/include/linux/dma/k3-udma-glue.h +++ b/include/linux/dma/k3-udma-glue.h @@ -43,6 +43,10 @@ u32 k3_udma_glue_tx_get_txcq_id(struct k3_udma_glue_tx_channel *tx_chn); int k3_udma_glue_tx_get_irq(struct k3_udma_glue_tx_channel *tx_chn); struct device * k3_udma_glue_tx_get_dma_device(struct k3_udma_glue_tx_channel *tx_chn); +void k3_udma_glue_tx_dma_to_cppi5_addr(struct k3_udma_glue_tx_channel *tx_chn, + dma_addr_t *addr); +void k3_udma_glue_tx_cppi5_to_dma_addr(struct k3_udma_glue_tx_channel *tx_chn, + dma_addr_t *addr); enum { K3_UDMA_GLUE_SRC_TAG_LO_KEEP = 0, @@ -134,5 +138,9 @@ int k3_udma_glue_rx_flow_disable(struct k3_udma_glue_rx_channel *rx_chn, u32 flow_idx); struct device * k3_udma_glue_rx_get_dma_device(struct k3_udma_glue_rx_channel *rx_chn); +void k3_udma_glue_rx_dma_to_cppi5_addr(struct k3_udma_glue_rx_channel *rx_chn, + dma_addr_t *addr); +void k3_udma_glue_rx_cppi5_to_dma_addr(struct k3_udma_glue_rx_channel *rx_chn, + dma_addr_t *addr); #endif /* K3_UDMA_GLUE_H_ */ -- Peter Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
WARNING: multiple messages have this Message-ID (diff)
From: Peter Ujfalusi <peter.ujfalusi@ti.com> To: <vkoul@kernel.org>, <nm@ti.com>, <ssantosh@kernel.org>, <robh+dt@kernel.org>, <vigneshr@ti.com> Cc: devicetree@vger.kernel.org, lokeshvutla@ti.com, linux-kernel@vger.kernel.org, t-kristo@ti.com, dmaengine@vger.kernel.org, dan.j.williams@intel.com, linux-arm-kernel@lists.infradead.org Subject: [PATCH 18/18] dmaengine: ti: k3-udma-glue: Add support for K3 PKTDMA Date: Wed, 30 Sep 2020 12:14:12 +0300 [thread overview] Message-ID: <20200930091412.8020-19-peter.ujfalusi@ti.com> (raw) In-Reply-To: <20200930091412.8020-1-peter.ujfalusi@ti.com> From: Vignesh Raghavendra <vigneshr@ti.com> This commit adds support for PKTDMA in k3-udma glue driver. Use new psil_endpoint_config struct to get static data for a given channel or a flow during setup. Make sure that the RX flows being mapped to a RX channel is within the range of flows that is been allocated to that RX channel. Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> --- drivers/dma/ti/k3-udma-glue.c | 272 ++++++++++++++++++++++++++----- drivers/dma/ti/k3-udma-private.c | 24 +++ drivers/dma/ti/k3-udma.h | 4 + include/linux/dma/k3-udma-glue.h | 8 + 4 files changed, 270 insertions(+), 38 deletions(-) diff --git a/drivers/dma/ti/k3-udma-glue.c b/drivers/dma/ti/k3-udma-glue.c index f39825ce288a..6730bc296043 100644 --- a/drivers/dma/ti/k3-udma-glue.c +++ b/drivers/dma/ti/k3-udma-glue.c @@ -22,6 +22,7 @@ struct k3_udma_glue_common { struct device *dev; + struct device chan_dev; struct udma_dev *udmax; const struct udma_tisci_rm *tisci_rm; struct k3_ringacc *ringacc; @@ -32,7 +33,8 @@ struct k3_udma_glue_common { bool epib; u32 psdata_size; u32 swdata_size; - u32 atype; + u32 atype_asel; + struct psil_endpoint_config *ep_config; }; struct k3_udma_glue_tx_channel { @@ -53,6 +55,8 @@ struct k3_udma_glue_tx_channel { bool tx_filt_einfo; bool tx_filt_pswords; bool tx_supr_tdpkt; + + int udma_tflow_id; }; struct k3_udma_glue_rx_flow { @@ -104,7 +108,6 @@ static int of_k3_udma_glue_parse_chn(struct device_node *chn_np, const char *name, struct k3_udma_glue_common *common, bool tx_chn) { - struct psil_endpoint_config *ep_config; struct of_phandle_args dma_spec; u32 thread_id; int ret = 0; @@ -121,15 +124,26 @@ static int of_k3_udma_glue_parse_chn(struct device_node *chn_np, &dma_spec)) return -ENOENT; + ret = of_k3_udma_glue_parse(dma_spec.np, common); + if (ret) + goto out_put_spec; + thread_id = dma_spec.args[0]; if (dma_spec.args_count == 2) { - if (dma_spec.args[1] > 2) { + if (dma_spec.args[1] > 2 && !xudma_is_pktdma(common->udmax)) { dev_err(common->dev, "Invalid channel atype: %u\n", dma_spec.args[1]); ret = -EINVAL; goto out_put_spec; } - common->atype = dma_spec.args[1]; + if (dma_spec.args[1] > 15 && xudma_is_pktdma(common->udmax)) { + dev_err(common->dev, "Invalid channel asel: %u\n", + dma_spec.args[1]); + ret = -EINVAL; + goto out_put_spec; + } + + common->atype_asel = dma_spec.args[1]; } if (tx_chn && !(thread_id & K3_PSIL_DST_THREAD_ID_OFFSET)) { @@ -143,25 +157,23 @@ static int of_k3_udma_glue_parse_chn(struct device_node *chn_np, } /* get psil endpoint config */ - ep_config = psil_get_ep_config(thread_id); - if (IS_ERR(ep_config)) { + common->ep_config = psil_get_ep_config(thread_id); + if (IS_ERR(common->ep_config)) { dev_err(common->dev, "No configuration for psi-l thread 0x%04x\n", thread_id); - ret = PTR_ERR(ep_config); + ret = PTR_ERR(common->ep_config); goto out_put_spec; } - common->epib = ep_config->needs_epib; - common->psdata_size = ep_config->psd_size; + common->epib = common->ep_config->needs_epib; + common->psdata_size = common->ep_config->psd_size; if (tx_chn) common->dst_thread = thread_id; else common->src_thread = thread_id; - ret = of_k3_udma_glue_parse(dma_spec.np, common); - out_put_spec: of_node_put(dma_spec.np); return ret; @@ -227,7 +239,7 @@ static int k3_udma_glue_cfg_tx_chn(struct k3_udma_glue_tx_channel *tx_chn) req.tx_supr_tdpkt = 1; req.tx_fetch_size = tx_chn->common.hdesc_size >> 2; req.txcq_qnum = k3_ringacc_get_ring_id(tx_chn->ringtxcq); - req.tx_atype = tx_chn->common.atype; + req.tx_atype = tx_chn->common.atype_asel; return tisci_rm->tisci_udmap_ops->tx_ch_cfg(tisci_rm->tisci, &req); } @@ -259,8 +271,14 @@ struct k3_udma_glue_tx_channel *k3_udma_glue_request_tx_chn(struct device *dev, tx_chn->common.psdata_size, tx_chn->common.swdata_size); + if (xudma_is_pktdma(tx_chn->common.udmax)) + tx_chn->udma_tchan_id = tx_chn->common.ep_config->mapped_channel_id; + else + tx_chn->udma_tchan_id = -1; + /* request and cfg UDMAP TX channel */ - tx_chn->udma_tchanx = xudma_tchan_get(tx_chn->common.udmax, -1); + tx_chn->udma_tchanx = xudma_tchan_get(tx_chn->common.udmax, + tx_chn->udma_tchan_id); if (IS_ERR(tx_chn->udma_tchanx)) { ret = PTR_ERR(tx_chn->udma_tchanx); dev_err(dev, "UDMAX tchanx get err %d\n", ret); @@ -268,11 +286,33 @@ struct k3_udma_glue_tx_channel *k3_udma_glue_request_tx_chn(struct device *dev, } tx_chn->udma_tchan_id = xudma_tchan_get_id(tx_chn->udma_tchanx); + tx_chn->common.chan_dev.parent = xudma_get_device(tx_chn->common.udmax); + dev_set_name(&tx_chn->common.chan_dev, "tchan%d-0x%04x", + tx_chn->udma_tchan_id, tx_chn->common.dst_thread); + ret = device_register(&tx_chn->common.chan_dev); + if (ret) { + dev_err(dev, "Channel Device registration failed %d\n", ret); + tx_chn->common.chan_dev.parent = NULL; + goto err; + } + + if (xudma_is_pktdma(tx_chn->common.udmax)) { + /* prepare the channel device as coherent */ + tx_chn->common.chan_dev.dma_coherent = true; + dma_coerce_mask_and_coherent(&tx_chn->common.chan_dev, + DMA_BIT_MASK(48)); + } + atomic_set(&tx_chn->free_pkts, cfg->txcq_cfg.size); + if (xudma_is_pktdma(tx_chn->common.udmax)) + tx_chn->udma_tflow_id = tx_chn->common.ep_config->default_flow_id; + else + tx_chn->udma_tflow_id = tx_chn->udma_tchan_id; + /* request and cfg rings */ ret = k3_ringacc_request_rings_pair(tx_chn->common.ringacc, - tx_chn->udma_tchan_id, -1, + tx_chn->udma_tflow_id, -1, &tx_chn->ringtx, &tx_chn->ringtxcq); if (ret) { @@ -284,6 +324,12 @@ struct k3_udma_glue_tx_channel *k3_udma_glue_request_tx_chn(struct device *dev, cfg->tx_cfg.dma_dev = k3_udma_glue_tx_get_dma_device(tx_chn); cfg->txcq_cfg.dma_dev = cfg->tx_cfg.dma_dev; + /* Set the ASEL value for DMA rings of PKTDMA */ + if (xudma_is_pktdma(tx_chn->common.udmax)) { + cfg->tx_cfg.asel = tx_chn->common.atype_asel; + cfg->txcq_cfg.asel = tx_chn->common.atype_asel; + } + ret = k3_ringacc_ring_cfg(tx_chn->ringtx, &cfg->tx_cfg); if (ret) { dev_err(dev, "Failed to cfg ringtx %d\n", ret); @@ -348,6 +394,11 @@ void k3_udma_glue_release_tx_chn(struct k3_udma_glue_tx_channel *tx_chn) if (tx_chn->ringtx) k3_ringacc_ring_free(tx_chn->ringtx); + + if (tx_chn->common.chan_dev.parent) { + device_unregister(&tx_chn->common.chan_dev); + tx_chn->common.chan_dev.parent = NULL; + } } EXPORT_SYMBOL_GPL(k3_udma_glue_release_tx_chn); @@ -441,13 +492,10 @@ void k3_udma_glue_reset_tx_chn(struct k3_udma_glue_tx_channel *tx_chn, void *data, void (*cleanup)(void *data, dma_addr_t desc_dma)) { + struct device *dev = tx_chn->common.dev; dma_addr_t desc_dma; int occ_tx, i, ret; - /* reset TXCQ as it is not input for udma - expected to be empty */ - if (tx_chn->ringtxcq) - k3_ringacc_ring_reset(tx_chn->ringtxcq); - /* * TXQ reset need to be special way as it is input for udma and its * state cached by udma, so: @@ -456,17 +504,20 @@ void k3_udma_glue_reset_tx_chn(struct k3_udma_glue_tx_channel *tx_chn, * 3) reset TXQ in a special way */ occ_tx = k3_ringacc_ring_get_occ(tx_chn->ringtx); - dev_dbg(tx_chn->common.dev, "TX reset occ_tx %u\n", occ_tx); + dev_dbg(dev, "TX reset occ_tx %u\n", occ_tx); for (i = 0; i < occ_tx; i++) { ret = k3_ringacc_ring_pop(tx_chn->ringtx, &desc_dma); if (ret) { - dev_err(tx_chn->common.dev, "TX reset pop %d\n", ret); + if (ret != -ENODATA) + dev_err(dev, "TX reset pop %d\n", ret); break; } cleanup(data, desc_dma); } + /* reset TXCQ as it is not input for udma - expected to be empty */ + k3_ringacc_ring_reset(tx_chn->ringtxcq); k3_ringacc_ring_reset_dma(tx_chn->ringtx, occ_tx); } EXPORT_SYMBOL_GPL(k3_udma_glue_reset_tx_chn); @@ -485,7 +536,12 @@ EXPORT_SYMBOL_GPL(k3_udma_glue_tx_get_txcq_id); int k3_udma_glue_tx_get_irq(struct k3_udma_glue_tx_channel *tx_chn) { - tx_chn->virq = k3_ringacc_get_ring_irq_num(tx_chn->ringtxcq); + if (xudma_is_pktdma(tx_chn->common.udmax)) { + tx_chn->virq = xudma_pktdma_tflow_get_irq(tx_chn->common.udmax, + tx_chn->udma_tflow_id); + } else { + tx_chn->virq = k3_ringacc_get_ring_irq_num(tx_chn->ringtxcq); + } return tx_chn->virq; } @@ -494,10 +550,36 @@ EXPORT_SYMBOL_GPL(k3_udma_glue_tx_get_irq); struct device * k3_udma_glue_tx_get_dma_device(struct k3_udma_glue_tx_channel *tx_chn) { + if (xudma_is_pktdma(tx_chn->common.udmax) && + (tx_chn->common.atype_asel == 14 || tx_chn->common.atype_asel == 15)) + return &tx_chn->common.chan_dev; + return xudma_get_device(tx_chn->common.udmax); } EXPORT_SYMBOL_GPL(k3_udma_glue_tx_get_dma_device); +void k3_udma_glue_tx_dma_to_cppi5_addr(struct k3_udma_glue_tx_channel *tx_chn, + dma_addr_t *addr) +{ + if (!xudma_is_pktdma(tx_chn->common.udmax) || + !tx_chn->common.atype_asel) + return; + + *addr |= (u64)tx_chn->common.atype_asel << K3_ADDRESS_ASEL_SHIFT; +} +EXPORT_SYMBOL_GPL(k3_udma_glue_tx_dma_to_cppi5_addr); + +void k3_udma_glue_tx_cppi5_to_dma_addr(struct k3_udma_glue_tx_channel *tx_chn, + dma_addr_t *addr) +{ + if (!xudma_is_pktdma(tx_chn->common.udmax) || + !tx_chn->common.atype_asel) + return; + + *addr &= (u64)GENMASK(K3_ADDRESS_ASEL_SHIFT - 1, 0); +} +EXPORT_SYMBOL_GPL(k3_udma_glue_tx_cppi5_to_dma_addr); + static int k3_udma_glue_cfg_rx_chn(struct k3_udma_glue_rx_channel *rx_chn) { const struct udma_tisci_rm *tisci_rm = rx_chn->common.tisci_rm; @@ -509,8 +591,6 @@ static int k3_udma_glue_cfg_rx_chn(struct k3_udma_glue_rx_channel *rx_chn) req.valid_params = 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_FLOWID_START_VALID | - TI_SCI_MSG_VALUE_RM_UDMAP_CH_RX_FLOWID_CNT_VALID | TI_SCI_MSG_VALUE_RM_UDMAP_CH_ATYPE_VALID; req.nav_id = tisci_rm->tisci_dev_id; @@ -522,13 +602,16 @@ static int k3_udma_glue_cfg_rx_chn(struct k3_udma_glue_rx_channel *rx_chn) * req.rxcq_qnum = k3_ringacc_get_ring_id(rx_chn->flows[0].ringrx); */ req.rxcq_qnum = 0xFFFF; - if (rx_chn->flow_num && rx_chn->flow_id_base != rx_chn->udma_rchan_id) { + if (!xudma_is_pktdma(rx_chn->common.udmax) && rx_chn->flow_num && + rx_chn->flow_id_base != rx_chn->udma_rchan_id) { /* Default flow + extra ones */ + req.valid_params |= TI_SCI_MSG_VALUE_RM_UDMAP_CH_RX_FLOWID_START_VALID | + TI_SCI_MSG_VALUE_RM_UDMAP_CH_RX_FLOWID_CNT_VALID; req.flowid_start = rx_chn->flow_id_base; req.flowid_cnt = rx_chn->flow_num; } req.rx_chan_type = TI_SCI_RM_UDMAP_CHAN_TYPE_PKT_PBRR; - req.rx_atype = rx_chn->common.atype; + req.rx_atype = rx_chn->common.atype_asel; ret = tisci_rm->tisci_udmap_ops->rx_ch_cfg(tisci_rm->tisci, &req); if (ret) @@ -582,10 +665,18 @@ static int k3_udma_glue_cfg_rx_flow(struct k3_udma_glue_rx_channel *rx_chn, goto err_rflow_put; } + if (xudma_is_pktdma(rx_chn->common.udmax)) { + rx_ring_id = flow->udma_rflow_id + + xudma_get_rflow_ring_offset(rx_chn->common.udmax); + rx_ringfdq_id = 0; + } else { + rx_ring_id = flow_cfg->ring_rxq_id; + rx_ringfdq_id = flow_cfg->ring_rxfdq0_id; + } + /* request and cfg rings */ ret = k3_ringacc_request_rings_pair(rx_chn->common.ringacc, - flow_cfg->ring_rxfdq0_id, - flow_cfg->ring_rxq_id, + rx_ringfdq_id, rx_ring_id, &flow->ringrxfdq, &flow->ringrx); if (ret) { @@ -597,6 +688,12 @@ static int k3_udma_glue_cfg_rx_flow(struct k3_udma_glue_rx_channel *rx_chn, flow_cfg->rx_cfg.dma_dev = k3_udma_glue_rx_get_dma_device(rx_chn); flow_cfg->rxfdq_cfg.dma_dev = flow_cfg->rx_cfg.dma_dev; + /* Set the ASEL value for DMA rings of PKTDMA */ + if (xudma_is_pktdma(rx_chn->common.udmax)) { + flow_cfg->rx_cfg.asel = rx_chn->common.atype_asel; + flow_cfg->rxfdq_cfg.asel = rx_chn->common.atype_asel; + } + ret = k3_ringacc_ring_cfg(flow->ringrx, &flow_cfg->rx_cfg); if (ret) { dev_err(dev, "Failed to cfg ringrx %d\n", ret); @@ -755,6 +852,7 @@ k3_udma_glue_request_rx_chn_priv(struct device *dev, const char *name, struct k3_udma_glue_rx_channel_cfg *cfg) { struct k3_udma_glue_rx_channel *rx_chn; + struct psil_endpoint_config *ep_cfg; int ret, i; if (cfg->flow_id_num <= 0) @@ -782,8 +880,16 @@ k3_udma_glue_request_rx_chn_priv(struct device *dev, const char *name, rx_chn->common.psdata_size, rx_chn->common.swdata_size); + ep_cfg = rx_chn->common.ep_config; + + if (xudma_is_pktdma(rx_chn->common.udmax)) + rx_chn->udma_rchan_id = ep_cfg->mapped_channel_id; + else + rx_chn->udma_rchan_id = -1; + /* request and cfg UDMAP RX channel */ - rx_chn->udma_rchanx = xudma_rchan_get(rx_chn->common.udmax, -1); + rx_chn->udma_rchanx = xudma_rchan_get(rx_chn->common.udmax, + rx_chn->udma_rchan_id); if (IS_ERR(rx_chn->udma_rchanx)) { ret = PTR_ERR(rx_chn->udma_rchanx); dev_err(dev, "UDMAX rchanx get err %d\n", ret); @@ -791,12 +897,47 @@ k3_udma_glue_request_rx_chn_priv(struct device *dev, const char *name, } rx_chn->udma_rchan_id = xudma_rchan_get_id(rx_chn->udma_rchanx); - rx_chn->flow_num = cfg->flow_id_num; - rx_chn->flow_id_base = cfg->flow_id_base; + rx_chn->common.chan_dev.parent = xudma_get_device(rx_chn->common.udmax); + dev_set_name(&rx_chn->common.chan_dev, "rchan%d-0x%04x", + rx_chn->udma_rchan_id, rx_chn->common.src_thread); + ret = device_register(&rx_chn->common.chan_dev); + if (ret) { + dev_err(dev, "Channel Device registration failed %d\n", ret); + rx_chn->common.chan_dev.parent = NULL; + goto err; + } - /* Use RX channel id as flow id: target dev can't generate flow_id */ - if (cfg->flow_id_use_rxchan_id) - rx_chn->flow_id_base = rx_chn->udma_rchan_id; + if (xudma_is_pktdma(rx_chn->common.udmax)) { + /* prepare the channel device as coherent */ + rx_chn->common.chan_dev.dma_coherent = true; + dma_coerce_mask_and_coherent(&rx_chn->common.chan_dev, + DMA_BIT_MASK(48)); + } + + if (xudma_is_pktdma(rx_chn->common.udmax)) { + int flow_start = cfg->flow_id_base; + int flow_end; + + if (flow_start == -1) + flow_start = ep_cfg->flow_start; + + flow_end = flow_start + cfg->flow_id_num - 1; + if (flow_start < ep_cfg->flow_start || + flow_end > (ep_cfg->flow_start + ep_cfg->flow_num - 1)) { + dev_err(dev, "Invalid flow range requested\n"); + ret = -EINVAL; + goto err; + } + rx_chn->flow_id_base = flow_start; + } else { + rx_chn->flow_id_base = cfg->flow_id_base; + + /* Use RX channel id as flow id: target dev can't generate flow_id */ + if (cfg->flow_id_use_rxchan_id) + rx_chn->flow_id_base = rx_chn->udma_rchan_id; + } + + rx_chn->flow_num = cfg->flow_id_num; rx_chn->flows = devm_kcalloc(dev, rx_chn->flow_num, sizeof(*rx_chn->flows), GFP_KERNEL); @@ -899,6 +1040,23 @@ k3_udma_glue_request_remote_rx_chn(struct device *dev, const char *name, goto err; } + rx_chn->common.chan_dev.parent = xudma_get_device(rx_chn->common.udmax); + dev_set_name(&rx_chn->common.chan_dev, "rchan_remote-0x%04x", + rx_chn->common.src_thread); + ret = device_register(&rx_chn->common.chan_dev); + if (ret) { + dev_err(dev, "Channel Device registration failed %d\n", ret); + rx_chn->common.chan_dev.parent = NULL; + goto err; + } + + if (xudma_is_pktdma(rx_chn->common.udmax)) { + /* prepare the channel device as coherent */ + rx_chn->common.chan_dev.dma_coherent = true; + dma_coerce_mask_and_coherent(&rx_chn->common.chan_dev, + DMA_BIT_MASK(48)); + } + ret = k3_udma_glue_allocate_rx_flows(rx_chn, cfg); if (ret) goto err; @@ -951,6 +1109,11 @@ void k3_udma_glue_release_rx_chn(struct k3_udma_glue_rx_channel *rx_chn) if (!IS_ERR_OR_NULL(rx_chn->udma_rchanx)) xudma_rchan_put(rx_chn->common.udmax, rx_chn->udma_rchanx); + + if (rx_chn->common.chan_dev.parent) { + device_unregister(&rx_chn->common.chan_dev); + rx_chn->common.chan_dev.parent = NULL; + } } EXPORT_SYMBOL_GPL(k3_udma_glue_release_rx_chn); @@ -1143,12 +1306,10 @@ void k3_udma_glue_reset_rx_chn(struct k3_udma_glue_rx_channel *rx_chn, /* reset RXCQ as it is not input for udma - expected to be empty */ occ_rx = k3_ringacc_ring_get_occ(flow->ringrx); dev_dbg(dev, "RX reset flow %u occ_rx %u\n", flow_num, occ_rx); - if (flow->ringrx) - k3_ringacc_ring_reset(flow->ringrx); /* Skip RX FDQ in case one FDQ is used for the set of flows */ if (skip_fdq) - return; + goto do_reset; /* * RX FDQ reset need to be special way as it is input for udma and its @@ -1163,13 +1324,17 @@ void k3_udma_glue_reset_rx_chn(struct k3_udma_glue_rx_channel *rx_chn, for (i = 0; i < occ_rx; i++) { ret = k3_ringacc_ring_pop(flow->ringrxfdq, &desc_dma); if (ret) { - dev_err(dev, "RX reset pop %d\n", ret); + if (ret != -ENODATA) + dev_err(dev, "RX reset pop %d\n", ret); break; } cleanup(data, desc_dma); } k3_ringacc_ring_reset_dma(flow->ringrxfdq, occ_rx); + +do_reset: + k3_ringacc_ring_reset(flow->ringrx); } EXPORT_SYMBOL_GPL(k3_udma_glue_reset_rx_chn); @@ -1199,7 +1364,12 @@ int k3_udma_glue_rx_get_irq(struct k3_udma_glue_rx_channel *rx_chn, flow = &rx_chn->flows[flow_num]; - flow->virq = k3_ringacc_get_ring_irq_num(flow->ringrx); + if (xudma_is_pktdma(rx_chn->common.udmax)) { + flow->virq = xudma_pktdma_rflow_get_irq(rx_chn->common.udmax, + flow->udma_rflow_id); + } else { + flow->virq = k3_ringacc_get_ring_irq_num(flow->ringrx); + } return flow->virq; } @@ -1208,6 +1378,32 @@ EXPORT_SYMBOL_GPL(k3_udma_glue_rx_get_irq); struct device * k3_udma_glue_rx_get_dma_device(struct k3_udma_glue_rx_channel *rx_chn) { + if (xudma_is_pktdma(rx_chn->common.udmax) && + (rx_chn->common.atype_asel == 14 || rx_chn->common.atype_asel == 15)) + return &rx_chn->common.chan_dev; + return xudma_get_device(rx_chn->common.udmax); } EXPORT_SYMBOL_GPL(k3_udma_glue_rx_get_dma_device); + +void k3_udma_glue_rx_dma_to_cppi5_addr(struct k3_udma_glue_rx_channel *rx_chn, + dma_addr_t *addr) +{ + if (!xudma_is_pktdma(rx_chn->common.udmax) || + !rx_chn->common.atype_asel) + return; + + *addr |= (u64)rx_chn->common.atype_asel << K3_ADDRESS_ASEL_SHIFT; +} +EXPORT_SYMBOL_GPL(k3_udma_glue_rx_dma_to_cppi5_addr); + +void k3_udma_glue_rx_cppi5_to_dma_addr(struct k3_udma_glue_rx_channel *rx_chn, + dma_addr_t *addr) +{ + if (!xudma_is_pktdma(rx_chn->common.udmax) || + !rx_chn->common.atype_asel) + return; + + *addr &= (u64)GENMASK(K3_ADDRESS_ASEL_SHIFT - 1, 0); +} +EXPORT_SYMBOL_GPL(k3_udma_glue_rx_cppi5_to_dma_addr); diff --git a/drivers/dma/ti/k3-udma-private.c b/drivers/dma/ti/k3-udma-private.c index f0cecd29cff1..cef4890cfa42 100644 --- a/drivers/dma/ti/k3-udma-private.c +++ b/drivers/dma/ti/k3-udma-private.c @@ -151,3 +151,27 @@ void xudma_##res##rt_write(struct udma_##res *p, int reg, u32 val) \ EXPORT_SYMBOL(xudma_##res##rt_write) XUDMA_RT_IO_FUNCTIONS(tchan); XUDMA_RT_IO_FUNCTIONS(rchan); + +int xudma_is_pktdma(struct udma_dev *ud) +{ + return ud->match_data->type == DMA_TYPE_PKTDMA; +} +EXPORT_SYMBOL(xudma_is_pktdma); + +int xudma_pktdma_tflow_get_irq(struct udma_dev *ud, int udma_tflow_id) +{ + const struct udma_oes_offsets *oes = &ud->soc_data->oes; + + return ti_sci_inta_msi_get_virq(ud->dev, udma_tflow_id + + oes->pktdma_tchan_flow); +} +EXPORT_SYMBOL(xudma_pktdma_tflow_get_irq); + +int xudma_pktdma_rflow_get_irq(struct udma_dev *ud, int udma_rflow_id) +{ + const struct udma_oes_offsets *oes = &ud->soc_data->oes; + + return ti_sci_inta_msi_get_virq(ud->dev, udma_rflow_id + + oes->pktdma_rchan_flow); +} +EXPORT_SYMBOL(xudma_pktdma_rflow_get_irq); diff --git a/drivers/dma/ti/k3-udma.h b/drivers/dma/ti/k3-udma.h index 078cc3aa4126..c02080bb5866 100644 --- a/drivers/dma/ti/k3-udma.h +++ b/drivers/dma/ti/k3-udma.h @@ -156,4 +156,8 @@ void xudma_rchanrt_write(struct udma_rchan *rchan, int reg, u32 val); bool xudma_rflow_is_gp(struct udma_dev *ud, int id); int xudma_get_rflow_ring_offset(struct udma_dev *ud); +int xudma_is_pktdma(struct udma_dev *ud); + +int xudma_pktdma_tflow_get_irq(struct udma_dev *ud, int udma_tflow_id); +int xudma_pktdma_rflow_get_irq(struct udma_dev *ud, int udma_rflow_id); #endif /* K3_UDMA_H_ */ diff --git a/include/linux/dma/k3-udma-glue.h b/include/linux/dma/k3-udma-glue.h index d7c12f31377c..e443be4d3b4b 100644 --- a/include/linux/dma/k3-udma-glue.h +++ b/include/linux/dma/k3-udma-glue.h @@ -43,6 +43,10 @@ u32 k3_udma_glue_tx_get_txcq_id(struct k3_udma_glue_tx_channel *tx_chn); int k3_udma_glue_tx_get_irq(struct k3_udma_glue_tx_channel *tx_chn); struct device * k3_udma_glue_tx_get_dma_device(struct k3_udma_glue_tx_channel *tx_chn); +void k3_udma_glue_tx_dma_to_cppi5_addr(struct k3_udma_glue_tx_channel *tx_chn, + dma_addr_t *addr); +void k3_udma_glue_tx_cppi5_to_dma_addr(struct k3_udma_glue_tx_channel *tx_chn, + dma_addr_t *addr); enum { K3_UDMA_GLUE_SRC_TAG_LO_KEEP = 0, @@ -134,5 +138,9 @@ int k3_udma_glue_rx_flow_disable(struct k3_udma_glue_rx_channel *rx_chn, u32 flow_idx); struct device * k3_udma_glue_rx_get_dma_device(struct k3_udma_glue_rx_channel *rx_chn); +void k3_udma_glue_rx_dma_to_cppi5_addr(struct k3_udma_glue_rx_channel *rx_chn, + dma_addr_t *addr); +void k3_udma_glue_rx_cppi5_to_dma_addr(struct k3_udma_glue_rx_channel *rx_chn, + dma_addr_t *addr); #endif /* K3_UDMA_GLUE_H_ */ -- Peter Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2020-09-30 9:15 UTC|newest] Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-09-30 9:13 [PATCH 00/18] dmaengine/soc: k3-udma: Add support for BCDMA and PKTDMA Peter Ujfalusi 2020-09-30 9:13 ` Peter Ujfalusi 2020-09-30 9:13 ` [PATCH 01/18] dmaengine: of-dma: Add support for optional router configuration callback Peter Ujfalusi 2020-09-30 9:13 ` Peter Ujfalusi 2020-10-07 5:44 ` Vinod Koul 2020-10-07 5:44 ` Vinod Koul 2020-10-07 8:08 ` Peter Ujfalusi 2020-10-07 8:08 ` Peter Ujfalusi 2020-10-07 15:55 ` Vinod Koul 2020-10-07 15:55 ` Vinod Koul 2020-10-08 6:41 ` Peter Ujfalusi 2020-10-08 6:41 ` Peter Ujfalusi 2020-10-28 5:55 ` Vinod Koul 2020-10-28 5:55 ` Vinod Koul 2020-10-28 9:56 ` Peter Ujfalusi 2020-10-28 9:56 ` Peter Ujfalusi 2020-11-09 11:45 ` Vinod Koul 2020-11-09 11:45 ` Vinod Koul 2020-11-09 12:09 ` Peter Ujfalusi 2020-11-09 12:09 ` Peter Ujfalusi 2020-11-09 12:23 ` Vinod Koul 2020-11-09 12:23 ` Vinod Koul 2020-11-09 12:36 ` Peter Ujfalusi 2020-11-09 12:36 ` Peter Ujfalusi 2020-09-30 9:13 ` [PATCH 02/18] dmaengine: Add support for per channel coherency handling Peter Ujfalusi 2020-09-30 9:13 ` Peter Ujfalusi 2020-09-30 9:13 ` [PATCH 03/18] dmaengine: doc: client: Update for dmaengine_get_dma_device() usage Peter Ujfalusi 2020-09-30 9:13 ` Peter Ujfalusi 2020-09-30 9:13 ` [PATCH 04/18] dmaengine: dmatest: Use dmaengine_get_dma_device Peter Ujfalusi 2020-09-30 9:13 ` Peter Ujfalusi 2020-09-30 9:13 ` [PATCH 05/18] dmaengine: ti: k3-udma: Wait for peer teardown completion if supported Peter Ujfalusi 2020-09-30 9:13 ` Peter Ujfalusi 2020-09-30 9:14 ` [PATCH 06/18] dmaengine: ti: k3-udma: Add support for second resource range from sysfw Peter Ujfalusi 2020-09-30 9:14 ` Peter Ujfalusi 2020-09-30 9:14 ` [PATCH 07/18] dmaengine: ti: k3-udma-glue: Add function to get device pointer for DMA API Peter Ujfalusi 2020-09-30 9:14 ` Peter Ujfalusi 2020-10-07 6:53 ` Vinod Koul 2020-10-07 6:53 ` Vinod Koul 2020-10-07 8:22 ` Peter Ujfalusi 2020-10-07 8:22 ` Peter Ujfalusi 2020-09-30 9:14 ` [PATCH 08/18] dmaengine: ti: k3-udma-glue: Configure the dma_dev for rings Peter Ujfalusi 2020-09-30 9:14 ` Peter Ujfalusi 2020-09-30 9:14 ` [PATCH 09/18] dt-bindings: dma: ti: Add document for K3 BCDMA Peter Ujfalusi 2020-09-30 9:14 ` Peter Ujfalusi 2020-10-01 6:49 ` Peter Ujfalusi 2020-10-01 6:49 ` Peter Ujfalusi 2020-10-06 19:23 ` Rob Herring 2020-10-06 19:23 ` Rob Herring 2020-10-06 19:29 ` Rob Herring 2020-10-06 19:29 ` Rob Herring 2020-10-07 9:09 ` Peter Ujfalusi 2020-10-07 9:09 ` Peter Ujfalusi 2020-10-07 15:46 ` Rob Herring 2020-10-07 15:46 ` Rob Herring 2020-10-08 8:40 ` Peter Ujfalusi 2020-10-08 8:40 ` Peter Ujfalusi 2020-10-08 19:15 ` Rob Herring 2020-10-08 19:15 ` Rob Herring 2020-10-09 8:06 ` Peter Ujfalusi 2020-10-09 8:06 ` Peter Ujfalusi 2020-09-30 9:14 ` [PATCH 10/18] dt-bindings: dma: ti: Add document for K3 PKTDMA Peter Ujfalusi 2020-09-30 9:14 ` Peter Ujfalusi 2020-09-30 9:14 ` [PATCH 11/18] dmaengine: ti: k3-psil: Extend psil_endpoint_config " Peter Ujfalusi 2020-09-30 9:14 ` Peter Ujfalusi 2020-09-30 9:14 ` [PATCH 12/18] dmaengine: ti: k3-psil: Add initial map for AM64 Peter Ujfalusi 2020-09-30 9:14 ` Peter Ujfalusi 2020-09-30 9:14 ` [PATCH 13/18] dmaengine: ti: Add support for k3 event routers Peter Ujfalusi 2020-09-30 9:14 ` Peter Ujfalusi 2020-09-30 9:14 ` [PATCH 14/18] soc: ti: k3-ringacc: add AM64 DMA rings support Peter Ujfalusi 2020-09-30 9:14 ` Peter Ujfalusi 2020-09-30 9:14 ` [PATCH 15/18] dmaengine: ti: k3-udma: Initial support for K3 BCDMA Peter Ujfalusi 2020-09-30 9:14 ` Peter Ujfalusi 2020-09-30 9:14 ` [PATCH 16/18] dmaengine: ti: k3-udma: Add support for BCDMA channel TPL handling Peter Ujfalusi 2020-09-30 9:14 ` Peter Ujfalusi 2020-09-30 9:14 ` [PATCH 17/18] dmaengine: ti: k3-udma: Initial support for K3 PKTDMA Peter Ujfalusi 2020-09-30 9:14 ` Peter Ujfalusi 2020-09-30 9:14 ` Peter Ujfalusi [this message] 2020-09-30 9:14 ` [PATCH 18/18] dmaengine: ti: k3-udma-glue: Add " Peter Ujfalusi 2020-09-30 10:17 ` [PATCH 00/18] dmaengine/soc: k3-udma: Add support for BCDMA and PKTDMA Peter Ujfalusi 2020-09-30 10:17 ` Peter Ujfalusi
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