summaryrefslogtreecommitdiff
path: root/drivers/usb/gadget/mv_udc.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/usb/gadget/mv_udc.c')
-rw-r--r--drivers/usb/gadget/mv_udc.c115
1 files changed, 68 insertions, 47 deletions
diff --git a/drivers/usb/gadget/mv_udc.c b/drivers/usb/gadget/mv_udc.c
index e6700a80f..da4173865 100644
--- a/drivers/usb/gadget/mv_udc.c
+++ b/drivers/usb/gadget/mv_udc.c
@@ -13,13 +13,16 @@
#include <config.h>
#include <net.h>
#include <malloc.h>
+#include <asm/byteorder.h>
+#include <asm/errno.h>
#include <asm/io.h>
+#include <asm/unaligned.h>
#include <linux/types.h>
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
#include <usb/mv_udc.h>
-
-#if CONFIG_USB_MAX_CONTROLLER_COUNT > 1
-#error This driver only supports one single controller.
-#endif
+#include "../host/ehci.h"
+#include "mv_udc.h"
/*
* Check if the system has too long cachelines. If the cachelines are
@@ -107,6 +110,7 @@ static struct mv_drv controller = {
.gadget = {
.name = "mv_udc",
.ops = &mv_udc_ops,
+ .is_dualspeed = 1,
},
};
@@ -210,12 +214,10 @@ static void mv_ep_free_request(struct usb_ep *ep, struct usb_request *_req)
return;
}
-static void ep_enable(int num, int in)
+static void ep_enable(int num, int in, int maxpacket)
{
- struct ept_queue_head *head;
struct mv_udc *udc = (struct mv_udc *)controller.ctrl->hcor;
unsigned n;
- head = mv_get_qh(num, in);
n = readl(&udc->epctrl[num]);
if (in)
@@ -224,7 +226,9 @@ static void ep_enable(int num, int in)
n |= (CTRL_RXE | CTRL_RXR | CTRL_RXT_BULK);
if (num != 0) {
- head->config = CONFIG_MAX_PKT(EP_MAX_PACKET_SIZE) | CONFIG_ZLT;
+ struct ept_queue_head *head = mv_get_qh(num, in);
+
+ head->config = CONFIG_MAX_PKT(maxpacket) | CONFIG_ZLT;
mv_flush_qh(num);
}
writel(n, &udc->epctrl[num]);
@@ -237,17 +241,33 @@ static int mv_ep_enable(struct usb_ep *ep,
int num, in;
num = desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
in = (desc->bEndpointAddress & USB_DIR_IN) != 0;
- ep_enable(num, in);
mv_ep->desc = desc;
+
+ if (num) {
+ int max = get_unaligned_le16(&desc->wMaxPacketSize);
+
+ if ((max > 64) && (controller.gadget.speed == USB_SPEED_FULL))
+ max = 64;
+ if (ep->maxpacket != max) {
+ DBG("%s: from %d to %d\n", __func__,
+ ep->maxpacket, max);
+ ep->maxpacket = max;
+ }
+ }
+ ep_enable(num, in, ep->maxpacket);
+ DBG("%s: num=%d maxpacket=%d\n", __func__, num, ep->maxpacket);
return 0;
}
static int mv_ep_disable(struct usb_ep *ep)
{
+ struct mv_ep *mv_ep = container_of(ep, struct mv_ep, ep);
+
+ mv_ep->desc = NULL;
return 0;
}
-static int mv_bounce(struct mv_ep *ep)
+static int mv_bounce(struct mv_ep *ep, int in)
{
uint32_t addr = (uint32_t)ep->req.buf;
uint32_t ba;
@@ -276,8 +296,8 @@ align:
if (!ep->b_buf)
return -ENOMEM;
}
-
- memcpy(ep->b_buf, ep->req.buf, ep->req.length);
+ if (in)
+ memcpy(ep->b_buf, ep->req.buf, ep->req.length);
flush:
ba = (uint32_t)ep->b_buf;
@@ -286,29 +306,25 @@ flush:
return 0;
}
-static void mv_debounce(struct mv_ep *ep)
+static void mv_debounce(struct mv_ep *ep, int in)
{
uint32_t addr = (uint32_t)ep->req.buf;
uint32_t ba = (uint32_t)ep->b_buf;
+ if (in) {
+ if (addr == ba)
+ return; /* not a bounce */
+ goto free;
+ }
invalidate_dcache_range(ba, ba + ep->b_len);
- /* Input buffer address is not aligned. */
- if (addr & (ARCH_DMA_MINALIGN - 1))
- goto copy;
+ if (addr == ba)
+ return; /* not a bounce */
- /* Input buffer length is not aligned. */
- if (ep->req.length & (ARCH_DMA_MINALIGN - 1))
- goto copy;
-
- /* The buffer is well aligned, only invalidate cache. */
- return;
-
-copy:
memcpy(ep->req.buf, ep->b_buf, ep->req.length);
-
+free:
/* Large payloads use allocated buffer, free it. */
- if (ep->req.length > 64)
+ if (ep->b_buf != ep->b_fast)
free(ep->b_buf);
}
@@ -326,7 +342,7 @@ static int mv_ep_queue(struct usb_ep *ep,
head = mv_get_qh(num, in);
len = req->length;
- ret = mv_bounce(mv_ep);
+ ret = mv_bounce(mv_ep, in);
if (ret)
return ret;
@@ -334,21 +350,20 @@ static int mv_ep_queue(struct usb_ep *ep,
item->info = INFO_BYTES(len) | INFO_IOC | INFO_ACTIVE;
item->page0 = (uint32_t)mv_ep->b_buf;
item->page1 = ((uint32_t)mv_ep->b_buf & 0xfffff000) + 0x1000;
+ mv_flush_qtd(num);
head->next = (unsigned) item;
head->info = 0;
DBG("ept%d %s queue len %x, buffer %p\n",
num, in ? "in" : "out", len, mv_ep->b_buf);
+ mv_flush_qh(num);
if (in)
bit = EPT_TX(num);
else
bit = EPT_RX(num);
- mv_flush_qh(num);
- mv_flush_qtd(num);
-
writel(bit, &udc->epprime);
return 0;
@@ -366,14 +381,13 @@ static void handle_ep_complete(struct mv_ep *ep)
mv_invalidate_qtd(num);
if (item->info & 0xff)
- printf("EP%d/%s FAIL nfo=%x pg0=%x\n",
- num, in ? "in" : "out", item->info, item->page0);
+ printf("EP%d/%s FAIL info=%x pg0=%x\n",
+ num, in ? "in" : "out", item->info, item->page0);
len = (item->info >> 16) & 0x7fff;
-
- mv_debounce(ep);
-
ep->req.length -= len;
+ mv_debounce(ep, in);
+
DBG("ept%d %s complete %x\n",
num, in ? "in" : "out", len);
ep->req.complete(&ep->ep, &ep->req);
@@ -411,14 +425,16 @@ static void handle_setup(void)
if ((r.wValue == 0) && (r.wLength == 0)) {
req->length = 0;
for (i = 0; i < NUM_ENDPOINTS; i++) {
- if (!controller.ep[i].desc)
+ struct mv_ep *ep = &controller.ep[i];
+
+ if (!ep->desc)
continue;
- num = controller.ep[i].desc->bEndpointAddress
+ num = ep->desc->bEndpointAddress
& USB_ENDPOINT_NUMBER_MASK;
- in = (controller.ep[i].desc->bEndpointAddress
+ in = (ep->desc->bEndpointAddress
& USB_DIR_IN) != 0;
if ((num == _num) && (in == _in)) {
- ep_enable(num, in);
+ ep_enable(num, in, ep->ep.maxpacket);
usb_ep_queue(controller.gadget.ep0,
req, 0);
break;
@@ -502,15 +518,19 @@ void udc_irq(void)
DBG("-- suspend --\n");
if (n & STS_PCI) {
- DBG("-- portchange --\n");
+ int max = 64;
+ int speed = USB_SPEED_FULL;
+
bit = (readl(&udc->portsc) >> 26) & 3;
+ DBG("-- portchange %x %s\n", bit, (bit == 2) ? "High" : "Full");
if (bit == 2) {
- controller.gadget.speed = USB_SPEED_HIGH;
- for (i = 1; i < NUM_ENDPOINTS && n; i++)
- if (controller.ep[i].desc)
- controller.ep[i].ep.maxpacket = 512;
- } else {
- controller.gadget.speed = USB_SPEED_FULL;
+ speed = USB_SPEED_HIGH;
+ max = 512;
+ }
+ controller.gadget.speed = speed;
+ for (i = 1; i < NUM_ENDPOINTS; i++) {
+ if (controller.ep[i].ep.maxpacket > max)
+ controller.ep[i].ep.maxpacket = max;
}
}
@@ -626,6 +646,7 @@ static int mvudc_probe(void)
free(controller.epts);
return -ENOMEM;
}
+ memset(controller.items_mem, 0, ilist_sz);
for (i = 0; i < 2 * NUM_ENDPOINTS; i++) {
/*
@@ -688,7 +709,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
if (driver->speed != USB_SPEED_FULL && driver->speed != USB_SPEED_HIGH)
return -EINVAL;
- ret = usb_lowlevel_init(0, (void **)&controller.ctrl);
+ ret = usb_lowlevel_init(0, USB_INIT_DEVICE, (void **)&controller.ctrl);
if (ret)
return ret;
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-10-31 23:04:27 +0000