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>

2 files changed, 80 insertions, 12 deletions

diff --git a/drivers/usb/musb/musb_cppi41.c b/drivers/usb/musb/musb_cppi41.c
index 602a230af655..d4d7c56b48c7 100644
--- a/drivers/usb/musb/musb_cppi41.c
+++ b/drivers/usb/musb/musb_cppi41.c
@@ -7,6 +7,7 @@
 
 #include "cppi_dma.h"
 #include "musb_core.h"
+#include "musb_trace.h"
 
 #define RNDIS_REG(x) (0x80 + ((x - 1) * 4))
 
@@ -126,6 +127,8 @@ static void cppi41_trans_done(struct cppi41_dma_channel *cppi41_channel)
                         csr = MUSB_TXCSR_MODE | MUSB_TXCSR_TXPKTRDY;
                         musb_writew(epio, MUSB_TXCSR, csr);
                 }
+
+                trace_musb_cppi41_done(cppi41_channel);
                 musb_dma_completion(musb, hw_ep->epnum, cppi41_channel->is_tx);
         } else {
                 /* next iteration, reload */
@@ -154,6 +157,7 @@ static void cppi41_trans_done(struct cppi41_dma_channel *cppi41_channel)
                 dma_desc->callback = cppi41_dma_callback;
                 dma_desc->callback_param = &cppi41_channel->channel;
                 cppi41_channel->cookie = dma_desc->tx_submit(dma_desc);
+                trace_musb_cppi41_cont(cppi41_channel);
                 dma_async_issue_pending(dc);
 
                 if (!cppi41_channel->is_tx) {
@@ -221,10 +225,7 @@ static void cppi41_dma_callback(void *private_data)
         transferred = cppi41_channel->prog_len - txstate.residue;
         cppi41_channel->transferred += transferred;
 
-        musb_dbg(musb, "DMA transfer done on hw_ep=%d bytes=%d/%d",
-                hw_ep->epnum, cppi41_channel->transferred,
-                cppi41_channel->total_len);
-
+        trace_musb_cppi41_gb(cppi41_channel);
         update_rx_toggle(cppi41_channel);
 
         if (cppi41_channel->transferred == cppi41_channel->total_len ||
@@ -355,12 +356,6 @@ static bool cppi41_configure_channel(struct dma_channel *channel,
         struct musb *musb = cppi41_channel->controller->musb;
         unsigned use_gen_rndis = 0;
 
-        musb_dbg(musb,
-                "configure ep%d/%x packet_sz=%d, mode=%d, dma_addr=0x%llx, len=%d is_tx=%d",
-                cppi41_channel->port_num, RNDIS_REG(cppi41_channel->port_num),
-                packet_sz, mode, (unsigned long long) dma_addr,
-                len, cppi41_channel->is_tx);
-
         cppi41_channel->buf_addr = dma_addr;
         cppi41_channel->total_len = len;
         cppi41_channel->transferred = 0;
@@ -412,6 +407,8 @@ static bool cppi41_configure_channel(struct dma_channel *channel,
         cppi41_channel->cookie = dma_desc->tx_submit(dma_desc);
         cppi41_channel->channel.rx_packet_done = false;
 
+        trace_musb_cppi41_config(cppi41_channel);
+
         save_rx_toggle(cppi41_channel);
         dma_async_issue_pending(dc);
         return true;
@@ -442,6 +439,7 @@ static struct dma_channel *cppi41_dma_channel_allocate(struct dma_controller *c,
         cppi41_channel->hw_ep = hw_ep;
         cppi41_channel->is_allocated = 1;
 
+        trace_musb_cppi41_alloc(cppi41_channel);
         return &cppi41_channel->channel;
 }
 
@@ -449,6 +447,7 @@ static void cppi41_dma_channel_release(struct dma_channel *channel)
 {
         struct cppi41_dma_channel *cppi41_channel = channel->private_data;
 
+        trace_musb_cppi41_free(cppi41_channel);
         if (cppi41_channel->is_allocated) {
                 cppi41_channel->is_allocated = 0;
                 channel->status = MUSB_DMA_STATUS_FREE;
@@ -518,8 +517,7 @@ static int cppi41_dma_channel_abort(struct dma_channel *channel)
         u16 csr;
 
         is_tx = cppi41_channel->is_tx;
-        musb_dbg(musb, "abort channel=%d, is_tx=%d",
-                        cppi41_channel->port_num, is_tx);
+        trace_musb_cppi41_abort(cppi41_channel);
 
         if (cppi41_channel->channel.status == MUSB_DMA_STATUS_FREE)
                 return 0;
diff --git a/drivers/usb/musb/musb_trace.h b/drivers/usb/musb/musb_trace.h
index 27d1a9b3efc8..f031c9e74322 100644
--- a/drivers/usb/musb/musb_trace.h
+++ b/drivers/usb/musb/musb_trace.h
@@ -25,6 +25,9 @@
 #include <linux/tracepoint.h>
 #include <linux/usb.h>
 #include "musb_core.h"
+#ifdef CONFIG_USB_TI_CPPI41_DMA
+#include "cppi_dma.h"
+#endif
 
 #define MUSB_MSG_MAX   500
 
@@ -288,6 +291,73 @@ DEFINE_EVENT(musb_req, musb_req_deq,
         TP_ARGS(req)
 );
 
+#ifdef CONFIG_USB_TI_CPPI41_DMA
+DECLARE_EVENT_CLASS(musb_cppi41,
+        TP_PROTO(struct cppi41_dma_channel *ch),
+        TP_ARGS(ch),
+        TP_STRUCT__entry(
+                __field(struct cppi41_dma_channel *, ch)
+                __string(name, dev_name(ch->hw_ep->musb->controller))
+                __field(u8, hwep)
+                __field(u8, port)
+                __field(u8, is_tx)
+                __field(u32, len)
+                __field(u32, prog_len)
+                __field(u32, xferred)
+        ),
+        TP_fast_assign(
+                __entry->ch = ch;
+                __assign_str(name, dev_name(ch->hw_ep->musb->controller));
+                __entry->hwep = ch->hw_ep->epnum;
+                __entry->port = ch->port_num;
+                __entry->is_tx = ch->is_tx;
+                __entry->len = ch->total_len;
+                __entry->prog_len = ch->prog_len;
+                __entry->xferred = ch->transferred;
+        ),
+        TP_printk("%s: %p, hwep%d ch%d%s, prog_len %d, len %d/%d",
+                        __get_str(name), __entry->ch, __entry->hwep,
+                        __entry->port, __entry->is_tx ? "tx" : "rx",
+                        __entry->prog_len, __entry->xferred, __entry->len
+        )
+);
+
+DEFINE_EVENT(musb_cppi41, musb_cppi41_done,
+        TP_PROTO(struct cppi41_dma_channel *ch),
+        TP_ARGS(ch)
+);
+
+DEFINE_EVENT(musb_cppi41, musb_cppi41_gb,
+        TP_PROTO(struct cppi41_dma_channel *ch),
+        TP_ARGS(ch)
+);
+
+DEFINE_EVENT(musb_cppi41, musb_cppi41_config,
+        TP_PROTO(struct cppi41_dma_channel *ch),
+        TP_ARGS(ch)
+);
+
+DEFINE_EVENT(musb_cppi41, musb_cppi41_cont,
+        TP_PROTO(struct cppi41_dma_channel *ch),
+        TP_ARGS(ch)
+);
+
+DEFINE_EVENT(musb_cppi41, musb_cppi41_alloc,
+        TP_PROTO(struct cppi41_dma_channel *ch),
+        TP_ARGS(ch)
+);
+
+DEFINE_EVENT(musb_cppi41, musb_cppi41_abort,
+        TP_PROTO(struct cppi41_dma_channel *ch),
+        TP_ARGS(ch)
+);
+
+DEFINE_EVENT(musb_cppi41, musb_cppi41_free,
+        TP_PROTO(struct cppi41_dma_channel *ch),
+        TP_ARGS(ch)
+);
+#endif /* CONFIG_USB_TI_CPPI41_DMA */
+
 #endif /* __MUSB_TRACE_H */
 
 /* this part has to be here */