[PATCH v2 04/11] hw/usb/aspeed-udc: Rename the transfer helpers after their DMA mode

[Jamin Lin <jamin_lin@aspeedtech.com>]

The controller can run an endpoint in descriptor list mode or in single
stage mode. Put the mode in the helper names. That makes the code
easier to read.

No functional change.

Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
---
 hw/usb/aspeed-udc.c | 30 +++++++++++++++---------------
 1 file changed, 15 insertions(+), 15 deletions(-)

diff --git a/hw/usb/aspeed-udc.c b/hw/usb/aspeed-udc.c
index bdbd1a78b8..b43f077c2d 100644
--- a/hw/usb/aspeed-udc.c
+++ b/hw/usb/aspeed-udc.c
@@ -459,8 +459,8 @@ static bool aspeed_udc_ep_copy_to_pkt(AspeedUDCState *s, int ep, uint32_t addr,
  * This function raises the endpoint ACK by itself when the ring becomes empty
  * or when a descriptor asks for an interrupt.
  */
-static AspeedUDCXferResult aspeed_udc_ep_xfer_in(AspeedUDCState *s, int ep,
-                                                 USBPacket *p)
+static AspeedUDCXferResult aspeed_udc_ep_xfer_in_desc(AspeedUDCState *s,
+                                                      int ep, USBPacket *p)
 {
     QEMUIOVector *pktiov = p->combined ? &p->combined->iov : &p->iov;
     AspeedUDCEP *e = &s->ep[ep];
@@ -568,15 +568,15 @@ static AspeedUDCXferResult aspeed_udc_ep_xfer_in(AspeedUDCState *s, int ep,
 
 /*
  * OUT transfer: receive data from the host by copying its OUT packet into the
- * buffer the guest gadget driver set up (single-stage mode).
+ * buffer the guest gadget driver set up.
  *
  * A host packet can be bigger than one buffer, so we copy at most PKT_SIZE
  * bytes per call, continuing from where the last call stopped
  * (p->actual_length). The caller keeps the packet parked until it is fully
  * copied.
  */
-static AspeedUDCXferResult aspeed_udc_ep_xfer_out(AspeedUDCState *s, int ep,
-                                                  USBPacket *p)
+static AspeedUDCXferResult aspeed_udc_ep_xfer_out_single(AspeedUDCState *s,
+                                                         int ep, USBPacket *p)
 {
     AspeedUDCEP *e = &s->ep[ep];
     uint32_t chunk = FIELD_EX32(e->regs[R_EP_DMA_STS], EP_DMA_STS, PKT_SIZE);
@@ -619,7 +619,7 @@ static AspeedUDCXferResult aspeed_udc_ep_xfer_out(AspeedUDCState *s, int ep,
  * If the request needs more data than was queued, keep it parked and wait for
  * the next kick.
  */
-static void aspeed_udc_ep_in_kick(AspeedUDCState *s, int ep, uint32_t val)
+static void aspeed_udc_ep_in_kick_desc(AspeedUDCState *s, int ep, uint32_t val)
 {
     AspeedUDCEP *e = &s->ep[ep];
     uint32_t cur_rptr = FIELD_EX32(e->regs[R_EP_DMA_STS], EP_DMA_STS, RPTR);
@@ -649,7 +649,7 @@ static void aspeed_udc_ep_in_kick(AspeedUDCState *s, int ep, uint32_t val)
         return;
     }
 
-    switch (aspeed_udc_ep_xfer_in(s, ep, p)) {
+    switch (aspeed_udc_ep_xfer_in_desc(s, ep, p)) {
     case ASPEED_UDC_XFER_DONE:
         e->pkt = NULL;
         p->status = USB_RET_SUCCESS;
@@ -671,7 +671,7 @@ static void aspeed_udc_ep_in_kick(AspeedUDCState *s, int ep, uint32_t val)
  * buffer before), copy its data into the buffer now and finish it. If the
  * packet has more data than fits, keep it parked and wait for the next buffer.
  */
-static void aspeed_udc_ep_out_kick(AspeedUDCState *s, int ep)
+static void aspeed_udc_ep_out_kick_single(AspeedUDCState *s, int ep)
 {
     AspeedUDCEP *e = &s->ep[ep];
     USBPacket *p = e->pkt;
@@ -681,7 +681,7 @@ static void aspeed_udc_ep_out_kick(AspeedUDCState *s, int ep)
         return;
     }
 
-    switch (aspeed_udc_ep_xfer_out(s, ep, p)) {
+    switch (aspeed_udc_ep_xfer_out_single(s, ep, p)) {
     case ASPEED_UDC_XFER_DONE:
         e->pkt = NULL;
         p->status = USB_RET_SUCCESS;
@@ -727,11 +727,11 @@ static void aspeed_udc_ep_write(void *opaque, hwaddr offset, uint64_t data,
         val &= 0x77ffffff;
         if (FIELD_EX32(e->regs[R_EP_DMA_CTRL], EP_DMA_CTRL, DESC_OP_EN)) {
             /* IN, descriptor-list mode */
-            aspeed_udc_ep_in_kick(s, e->index, val);
+            aspeed_udc_ep_in_kick_desc(s, e->index, val);
         } else {
             /* OUT, single-stage mode */
             e->regs[reg] = val;
-            aspeed_udc_ep_out_kick(s, e->index);
+            aspeed_udc_ep_out_kick_single(s, e->index);
         }
         break;
     default:
@@ -895,7 +895,7 @@ static void aspeed_udc_ep_data_in(AspeedUDCState *s, int ep, USBPacket *p)
         /*
          * No IN data is queued yet. Save the packet and return ASYNC
          * instead of NAK. A NAK would make the host retry slowly.
-         * aspeed_udc_ep_in_kick() serves and completes this packet later,
+         * aspeed_udc_ep_in_kick_desc() serves and completes this packet later,
          * once the guest gadget driver queues descriptors.
          */
         e->pkt = p;
@@ -903,7 +903,7 @@ static void aspeed_udc_ep_data_in(AspeedUDCState *s, int ep, USBPacket *p)
         return;
     }
 
-    switch (aspeed_udc_ep_xfer_in(s, ep, p)) {
+    switch (aspeed_udc_ep_xfer_in_desc(s, ep, p)) {
     case ASPEED_UDC_XFER_DONE:
         p->status = USB_RET_SUCCESS;
         break;
@@ -931,7 +931,7 @@ static void aspeed_udc_ep_data_out(AspeedUDCState *s, int ep, USBPacket *p)
          * No OUT buffer is ready yet. Save the packet and return ASYNC
          * instead of NAK. Writing now could use an old buffer address and
          * lose the data (for example a mass-storage CBW). A NAK would make
-         * the host retry slowly. aspeed_udc_ep_out_kick() delivers this
+         * the host retry slowly. aspeed_udc_ep_out_kick_single() delivers this
          * packet later, once the guest gadget driver sets up a buffer.
          */
         e->pkt = p;
@@ -939,7 +939,7 @@ static void aspeed_udc_ep_data_out(AspeedUDCState *s, int ep, USBPacket *p)
         return;
     }
 
-    switch (aspeed_udc_ep_xfer_out(s, ep, p)) {
+    switch (aspeed_udc_ep_xfer_out_single(s, ep, p)) {
     case ASPEED_UDC_XFER_DONE:
         p->status = USB_RET_SUCCESS;
         break;
-- 
2.43.0