diff options
| -rw-r--r-- | drivers/dma/ti/k3-udma.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c index 205141494fc1..1e6aac87302d 100644 --- a/drivers/dma/ti/k3-udma.c +++ b/drivers/dma/ti/k3-udma.c @@ -3276,6 +3276,66 @@ static int udma_setup_resources(struct udma_dev *ud) return ch_count; } +#ifdef CONFIG_DEBUG_FS +static void udma_dbg_summary_show_chan(struct seq_file *s, + struct dma_chan *chan) +{ + struct udma_chan *uc = to_udma_chan(chan); + struct udma_chan_config *ucc = &uc->config; + + seq_printf(s, " %-13s| %s", dma_chan_name(chan), + chan->dbg_client_name ?: "in-use"); + seq_printf(s, " (%s, ", dmaengine_get_direction_text(uc->config.dir)); + + switch (uc->config.dir) { + case DMA_MEM_TO_MEM: + seq_printf(s, "chan%d pair [0x%04x -> 0x%04x], ", uc->tchan->id, + ucc->src_thread, ucc->dst_thread); + break; + case DMA_DEV_TO_MEM: + seq_printf(s, "rchan%d [0x%04x -> 0x%04x], ", uc->rchan->id, + ucc->src_thread, ucc->dst_thread); + break; + case DMA_MEM_TO_DEV: + seq_printf(s, "tchan%d [0x%04x -> 0x%04x], ", uc->tchan->id, + ucc->src_thread, ucc->dst_thread); + break; + default: + seq_printf(s, ")\n"); + return; + } + + if (ucc->ep_type == PSIL_EP_NATIVE) { + seq_printf(s, "PSI-L Native"); + if (ucc->metadata_size) { + seq_printf(s, "[%s", ucc->needs_epib ? " EPIB" : ""); + if (ucc->psd_size) + seq_printf(s, " PSDsize:%u", ucc->psd_size); + seq_printf(s, " ]"); + } + } else { + seq_printf(s, "PDMA"); + if (ucc->enable_acc32 || ucc->enable_burst) + seq_printf(s, "[%s%s ]", + ucc->enable_acc32 ? " ACC32" : "", + ucc->enable_burst ? " BURST" : ""); + } + + seq_printf(s, ", %s)\n", ucc->pkt_mode ? "Packet mode" : "TR mode"); +} + +static void udma_dbg_summary_show(struct seq_file *s, + struct dma_device *dma_dev) +{ + struct dma_chan *chan; + + list_for_each_entry(chan, &dma_dev->channels, device_node) { + if (chan->client_count) + udma_dbg_summary_show_chan(s, chan); + } +} +#endif /* CONFIG_DEBUG_FS */ + #define TI_UDMAC_BUSWIDTHS (BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) | \ BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) | \ BIT(DMA_SLAVE_BUSWIDTH_3_BYTES) | \ @@ -3362,6 +3422,9 @@ static int udma_probe(struct platform_device *pdev) ud->ddev.device_resume = udma_resume; ud->ddev.device_terminate_all = udma_terminate_all; ud->ddev.device_synchronize = udma_synchronize; +#ifdef CONFIG_DEBUG_FS + ud->ddev.dbg_summary_show = udma_dbg_summary_show; +#endif ud->ddev.device_free_chan_resources = udma_free_chan_resources; ud->ddev.src_addr_widths = TI_UDMAC_BUSWIDTHS; |