usb: musb: cppi41: add dma channel tracepoints
Add tracepoints for cppi41 dma channels. Signed-off-by: Bin Liu <b-liu@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -7,6 +7,7 @@
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#include "cppi_dma.h"
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#include "musb_core.h"
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#include "musb_trace.h"
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#define RNDIS_REG(x) (0x80 + ((x - 1) * 4))
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@ -126,6 +127,8 @@ static void cppi41_trans_done(struct cppi41_dma_channel *cppi41_channel)
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csr = MUSB_TXCSR_MODE | MUSB_TXCSR_TXPKTRDY;
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musb_writew(epio, MUSB_TXCSR, csr);
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}
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trace_musb_cppi41_done(cppi41_channel);
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musb_dma_completion(musb, hw_ep->epnum, cppi41_channel->is_tx);
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} else {
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/* next iteration, reload */
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@ -154,6 +157,7 @@ static void cppi41_trans_done(struct cppi41_dma_channel *cppi41_channel)
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dma_desc->callback = cppi41_dma_callback;
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dma_desc->callback_param = &cppi41_channel->channel;
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cppi41_channel->cookie = dma_desc->tx_submit(dma_desc);
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trace_musb_cppi41_cont(cppi41_channel);
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dma_async_issue_pending(dc);
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if (!cppi41_channel->is_tx) {
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@ -221,10 +225,7 @@ static void cppi41_dma_callback(void *private_data)
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transferred = cppi41_channel->prog_len - txstate.residue;
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cppi41_channel->transferred += transferred;
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musb_dbg(musb, "DMA transfer done on hw_ep=%d bytes=%d/%d",
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hw_ep->epnum, cppi41_channel->transferred,
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cppi41_channel->total_len);
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trace_musb_cppi41_gb(cppi41_channel);
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update_rx_toggle(cppi41_channel);
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if (cppi41_channel->transferred == cppi41_channel->total_len ||
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@ -355,12 +356,6 @@ static bool cppi41_configure_channel(struct dma_channel *channel,
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struct musb *musb = cppi41_channel->controller->musb;
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unsigned use_gen_rndis = 0;
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musb_dbg(musb,
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"configure ep%d/%x packet_sz=%d, mode=%d, dma_addr=0x%llx, len=%d is_tx=%d",
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cppi41_channel->port_num, RNDIS_REG(cppi41_channel->port_num),
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packet_sz, mode, (unsigned long long) dma_addr,
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len, cppi41_channel->is_tx);
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cppi41_channel->buf_addr = dma_addr;
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cppi41_channel->total_len = len;
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cppi41_channel->transferred = 0;
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@ -412,6 +407,8 @@ static bool cppi41_configure_channel(struct dma_channel *channel,
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cppi41_channel->cookie = dma_desc->tx_submit(dma_desc);
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cppi41_channel->channel.rx_packet_done = false;
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trace_musb_cppi41_config(cppi41_channel);
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save_rx_toggle(cppi41_channel);
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dma_async_issue_pending(dc);
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return true;
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@ -442,6 +439,7 @@ static struct dma_channel *cppi41_dma_channel_allocate(struct dma_controller *c,
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cppi41_channel->hw_ep = hw_ep;
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cppi41_channel->is_allocated = 1;
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trace_musb_cppi41_alloc(cppi41_channel);
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return &cppi41_channel->channel;
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}
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@ -449,6 +447,7 @@ static void cppi41_dma_channel_release(struct dma_channel *channel)
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{
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struct cppi41_dma_channel *cppi41_channel = channel->private_data;
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trace_musb_cppi41_free(cppi41_channel);
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if (cppi41_channel->is_allocated) {
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cppi41_channel->is_allocated = 0;
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channel->status = MUSB_DMA_STATUS_FREE;
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@ -518,8 +517,7 @@ static int cppi41_dma_channel_abort(struct dma_channel *channel)
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u16 csr;
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is_tx = cppi41_channel->is_tx;
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musb_dbg(musb, "abort channel=%d, is_tx=%d",
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cppi41_channel->port_num, is_tx);
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trace_musb_cppi41_abort(cppi41_channel);
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if (cppi41_channel->channel.status == MUSB_DMA_STATUS_FREE)
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return 0;
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@ -25,6 +25,9 @@
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#include <linux/tracepoint.h>
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#include <linux/usb.h>
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#include "musb_core.h"
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#ifdef CONFIG_USB_TI_CPPI41_DMA
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#include "cppi_dma.h"
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#endif
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#define MUSB_MSG_MAX 500
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@ -288,6 +291,73 @@ DEFINE_EVENT(musb_req, musb_req_deq,
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TP_ARGS(req)
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);
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#ifdef CONFIG_USB_TI_CPPI41_DMA
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DECLARE_EVENT_CLASS(musb_cppi41,
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TP_PROTO(struct cppi41_dma_channel *ch),
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TP_ARGS(ch),
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TP_STRUCT__entry(
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__field(struct cppi41_dma_channel *, ch)
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__string(name, dev_name(ch->hw_ep->musb->controller))
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__field(u8, hwep)
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__field(u8, port)
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__field(u8, is_tx)
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__field(u32, len)
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__field(u32, prog_len)
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__field(u32, xferred)
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),
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TP_fast_assign(
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__entry->ch = ch;
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__assign_str(name, dev_name(ch->hw_ep->musb->controller));
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__entry->hwep = ch->hw_ep->epnum;
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__entry->port = ch->port_num;
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__entry->is_tx = ch->is_tx;
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__entry->len = ch->total_len;
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__entry->prog_len = ch->prog_len;
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__entry->xferred = ch->transferred;
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),
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TP_printk("%s: %p, hwep%d ch%d%s, prog_len %d, len %d/%d",
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__get_str(name), __entry->ch, __entry->hwep,
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__entry->port, __entry->is_tx ? "tx" : "rx",
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__entry->prog_len, __entry->xferred, __entry->len
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)
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);
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DEFINE_EVENT(musb_cppi41, musb_cppi41_done,
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TP_PROTO(struct cppi41_dma_channel *ch),
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TP_ARGS(ch)
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);
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DEFINE_EVENT(musb_cppi41, musb_cppi41_gb,
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TP_PROTO(struct cppi41_dma_channel *ch),
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TP_ARGS(ch)
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);
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DEFINE_EVENT(musb_cppi41, musb_cppi41_config,
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TP_PROTO(struct cppi41_dma_channel *ch),
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TP_ARGS(ch)
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);
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DEFINE_EVENT(musb_cppi41, musb_cppi41_cont,
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TP_PROTO(struct cppi41_dma_channel *ch),
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TP_ARGS(ch)
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);
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DEFINE_EVENT(musb_cppi41, musb_cppi41_alloc,
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TP_PROTO(struct cppi41_dma_channel *ch),
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TP_ARGS(ch)
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);
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DEFINE_EVENT(musb_cppi41, musb_cppi41_abort,
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TP_PROTO(struct cppi41_dma_channel *ch),
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TP_ARGS(ch)
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);
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DEFINE_EVENT(musb_cppi41, musb_cppi41_free,
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TP_PROTO(struct cppi41_dma_channel *ch),
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TP_ARGS(ch)
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);
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#endif /* CONFIG_USB_TI_CPPI41_DMA */
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#endif /* __MUSB_TRACE_H */
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/* this part has to be here */
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