+// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2011, Marvell Semiconductor Inc.
* Lei Wen <leiwen@marvell.com>
*
- * SPDX-License-Identifier: GPL-2.0+
- *
* Back ported to the 8xx platform (from the 8260 platform) by
* Murray.Jensen@cmst.csiro.au, 27-Jan-01.
*/
#include <common.h>
#include <command.h>
#include <config.h>
+#include <cpu_func.h>
#include <net.h>
#include <malloc.h>
#include <asm/byteorder.h>
-#include <asm/errno.h>
+#include <asm/cache.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
#include <asm/io.h>
#include <asm/unaligned.h>
#include <linux/types.h>
#error This driver can not work on systems with caches longer than 128b
#endif
+/*
+ * Every QTD must be individually aligned, since we can program any
+ * QTD's address into HW. Cache flushing requires ARCH_DMA_MINALIGN,
+ * and the USB HW requires 32-byte alignment. Align to both:
+ */
+#define ILIST_ALIGN roundup(ARCH_DMA_MINALIGN, 32)
+/* Each QTD is this size */
+#define ILIST_ENT_RAW_SZ sizeof(struct ept_queue_item)
+/*
+ * Align the size of the QTD too, so we can add this value to each
+ * QTD's address to get another aligned address.
+ */
+#define ILIST_ENT_SZ roundup(ILIST_ENT_RAW_SZ, ILIST_ALIGN)
+/* For each endpoint, we need 2 QTDs, one for each of IN and OUT */
+#define ILIST_SZ (NUM_ENDPOINTS * 2 * ILIST_ENT_SZ)
+
+#define EP_MAX_LENGTH_TRANSFER 0x4000
+
#ifndef DEBUG
#define DBG(x...) do {} while (0)
#else
static int ci_ep_disable(struct usb_ep *ep);
static int ci_ep_queue(struct usb_ep *ep,
struct usb_request *req, gfp_t gfp_flags);
+static int ci_ep_dequeue(struct usb_ep *ep, struct usb_request *req);
static struct usb_request *
ci_ep_alloc_request(struct usb_ep *ep, unsigned int gfp_flags);
static void ci_ep_free_request(struct usb_ep *ep, struct usb_request *_req);
.enable = ci_ep_enable,
.disable = ci_ep_disable,
.queue = ci_ep_queue,
+ .dequeue = ci_ep_dequeue,
.alloc_request = ci_ep_alloc_request,
.free_request = ci_ep_free_request,
};
+__weak void ci_init_after_reset(struct ehci_ctrl *ctrl)
+{
+}
+
/* Init values for USB endpoints. */
-static const struct usb_ep ci_ep_init[2] = {
+static const struct usb_ep ci_ep_init[5] = {
[0] = { /* EP 0 */
.maxpacket = 64,
.name = "ep0",
.ops = &ci_ep_ops,
},
- [1] = { /* EP 1..n */
+ [1] = {
+ .maxpacket = 512,
+ .name = "ep1in-bulk",
+ .ops = &ci_ep_ops,
+ },
+ [2] = {
+ .maxpacket = 512,
+ .name = "ep2out-bulk",
+ .ops = &ci_ep_ops,
+ },
+ [3] = {
+ .maxpacket = 512,
+ .name = "ep3in-int",
+ .ops = &ci_ep_ops,
+ },
+ [4] = {
.maxpacket = 512,
.name = "ep-",
.ops = &ci_ep_ops,
*/
static struct ept_queue_item *ci_get_qtd(int ep_num, int dir_in)
{
- return controller.items[(ep_num * 2) + dir_in];
+ int index = (ep_num * 2) + dir_in;
+ uint8_t *imem = controller.items_mem + (index * ILIST_ENT_SZ);
+ return (struct ept_queue_item *)imem;
}
/**
static void ci_flush_qh(int ep_num)
{
struct ept_queue_head *head = ci_get_qh(ep_num, 0);
- const uint32_t start = (uint32_t)head;
- const uint32_t end = start + 2 * sizeof(*head);
+ const unsigned long start = (unsigned long)head;
+ const unsigned long end = start + 2 * sizeof(*head);
flush_dcache_range(start, end);
}
static void ci_invalidate_qh(int ep_num)
{
struct ept_queue_head *head = ci_get_qh(ep_num, 0);
- uint32_t start = (uint32_t)head;
- uint32_t end = start + 2 * sizeof(*head);
+ unsigned long start = (unsigned long)head;
+ unsigned long end = start + 2 * sizeof(*head);
invalidate_dcache_range(start, end);
}
static void ci_flush_qtd(int ep_num)
{
struct ept_queue_item *item = ci_get_qtd(ep_num, 0);
- const uint32_t start = (uint32_t)item;
- const uint32_t end_raw = start + 2 * sizeof(*item);
- const uint32_t end = roundup(end_raw, ARCH_DMA_MINALIGN);
+ const unsigned long start = (unsigned long)item;
+ const unsigned long end = start + 2 * ILIST_ENT_SZ;
flush_dcache_range(start, end);
}
+/**
+ * ci_flush_td - flush cache over queue item
+ * @td: td pointer
+ *
+ * This function flushes cache for particular transfer descriptor.
+ */
+static void ci_flush_td(struct ept_queue_item *td)
+{
+ const unsigned long start = (unsigned long)td;
+ const unsigned long end = (unsigned long)td + ILIST_ENT_SZ;
+ flush_dcache_range(start, end);
+}
+
/**
* ci_invalidate_qtd - invalidate cache over queue item
* @ep_num: Endpoint number
static void ci_invalidate_qtd(int ep_num)
{
struct ept_queue_item *item = ci_get_qtd(ep_num, 0);
- const uint32_t start = (uint32_t)item;
- const uint32_t end_raw = start + 2 * sizeof(*item);
- const uint32_t end = roundup(end_raw, ARCH_DMA_MINALIGN);
+ const unsigned long start = (unsigned long)item;
+ const unsigned long end = start + 2 * ILIST_ENT_SZ;
invalidate_dcache_range(start, end);
}
+/**
+ * ci_invalidate_td - invalidate cache over queue item
+ * @td: td pointer
+ *
+ * This function invalidates cache for particular transfer descriptor.
+ */
+static void ci_invalidate_td(struct ept_queue_item *td)
+{
+ const unsigned long start = (unsigned long)td;
+ const unsigned long end = start + ILIST_ENT_SZ;
+ invalidate_dcache_range(start, end);
+}
+
static struct usb_request *
ci_ep_alloc_request(struct usb_ep *ep, unsigned int gfp_flags)
{
struct ci_ep *ci_ep = container_of(ep, struct ci_ep, ep);
- int num;
+ int num = -1;
struct ci_req *ci_req;
- num = ci_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
+ if (ci_ep->desc)
+ num = ci_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
+
if (num == 0 && controller.ep0_req)
return &controller.ep0_req->req;
- ci_req = memalign(ARCH_DMA_MINALIGN, sizeof(*ci_req));
+ ci_req = calloc(1, sizeof(*ci_req));
if (!ci_req)
return NULL;
INIT_LIST_HEAD(&ci_req->queue);
- ci_req->b_buf = 0;
if (num == 0)
controller.ep0_req = ci_req;
{
struct ci_ep *ci_ep = container_of(ep, struct ci_ep, ep);
struct ci_req *ci_req = container_of(req, struct ci_req, req);
- int num;
+ int num = -1;
- num = ci_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
- if (num == 0)
+ if (ci_ep->desc)
+ num = ci_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
+
+ if (num == 0) {
+ if (!controller.ep0_req)
+ return;
controller.ep0_req = 0;
+ }
if (ci_req->b_buf)
free(ci_req->b_buf);
static int ci_bounce(struct ci_req *ci_req, int in)
{
struct usb_request *req = &ci_req->req;
- uint32_t addr = (uint32_t)req->buf;
- uint32_t hwaddr;
+ unsigned long addr = (unsigned long)req->buf;
+ unsigned long hwaddr;
uint32_t aligned_used_len;
/* Input buffer address is not aligned. */
memcpy(ci_req->hw_buf, req->buf, req->length);
flush:
- hwaddr = (uint32_t)ci_req->hw_buf;
+ hwaddr = (unsigned long)ci_req->hw_buf;
aligned_used_len = roundup(req->length, ARCH_DMA_MINALIGN);
flush_dcache_range(hwaddr, hwaddr + aligned_used_len);
static void ci_debounce(struct ci_req *ci_req, int in)
{
struct usb_request *req = &ci_req->req;
- uint32_t addr = (uint32_t)req->buf;
- uint32_t hwaddr = (uint32_t)ci_req->hw_buf;
+ unsigned long addr = (unsigned long)req->buf;
+ unsigned long hwaddr = (unsigned long)ci_req->hw_buf;
uint32_t aligned_used_len;
if (in)
struct ept_queue_head *head;
int bit, num, len, in;
struct ci_req *ci_req;
+ u8 *buf;
+ uint32_t len_left, len_this_dtd;
+ struct ept_queue_item *dtd, *qtd;
ci_ep->req_primed = true;
ci_req = list_first_entry(&ci_ep->queue, struct ci_req, queue);
len = ci_req->req.length;
+ head->next = (unsigned long)item;
+ head->info = 0;
+
+ ci_req->dtd_count = 0;
+ buf = ci_req->hw_buf;
+ len_left = len;
+ dtd = item;
+
+ do {
+ len_this_dtd = min(len_left, (unsigned)EP_MAX_LENGTH_TRANSFER);
+
+ dtd->info = INFO_BYTES(len_this_dtd) | INFO_ACTIVE;
+ dtd->page0 = (unsigned long)buf;
+ dtd->page1 = ((unsigned long)buf & 0xfffff000) + 0x1000;
+ dtd->page2 = ((unsigned long)buf & 0xfffff000) + 0x2000;
+ dtd->page3 = ((unsigned long)buf & 0xfffff000) + 0x3000;
+ dtd->page4 = ((unsigned long)buf & 0xfffff000) + 0x4000;
+
+ len_left -= len_this_dtd;
+ buf += len_this_dtd;
+
+ if (len_left) {
+ qtd = (struct ept_queue_item *)
+ memalign(ILIST_ALIGN, ILIST_ENT_SZ);
+ dtd->next = (unsigned long)qtd;
+ dtd = qtd;
+ memset(dtd, 0, ILIST_ENT_SZ);
+ }
+
+ ci_req->dtd_count++;
+ } while (len_left);
+
+ item = dtd;
+ /*
+ * When sending the data for an IN transaction, the attached host
+ * knows that all data for the IN is sent when one of the following
+ * occurs:
+ * a) A zero-length packet is transmitted.
+ * b) A packet with length that isn't an exact multiple of the ep's
+ * maxpacket is transmitted.
+ * c) Enough data is sent to exactly fill the host's maximum expected
+ * IN transaction size.
+ *
+ * One of these conditions MUST apply at the end of an IN transaction,
+ * or the transaction will not be considered complete by the host. If
+ * none of (a)..(c) already applies, then we must force (a) to apply
+ * by explicitly sending an extra zero-length packet.
+ */
+ /* IN !a !b !c */
+ if (in && len && !(len % ci_ep->ep.maxpacket) && ci_req->req.zero) {
+ /*
+ * Each endpoint has 2 items allocated, even though typically
+ * only 1 is used at a time since either an IN or an OUT but
+ * not both is queued. For an IN transaction, item currently
+ * points at the second of these items, so we know that we
+ * can use the other to transmit the extra zero-length packet.
+ */
+ struct ept_queue_item *other_item = ci_get_qtd(num, 0);
+ item->next = (unsigned long)other_item;
+ item = other_item;
+ item->info = INFO_ACTIVE;
+ }
+
item->next = TERMINATE;
- item->info = INFO_BYTES(len) | INFO_IOC | INFO_ACTIVE;
- item->page0 = (uint32_t)ci_req->hw_buf;
- item->page1 = ((uint32_t)ci_req->hw_buf & 0xfffff000) + 0x1000;
- item->page2 = ((uint32_t)ci_req->hw_buf & 0xfffff000) + 0x2000;
- item->page3 = ((uint32_t)ci_req->hw_buf & 0xfffff000) + 0x3000;
- item->page4 = ((uint32_t)ci_req->hw_buf & 0xfffff000) + 0x4000;
+ item->info |= INFO_IOC;
+
ci_flush_qtd(num);
- head->next = (unsigned) item;
- head->info = 0;
+ item = (struct ept_queue_item *)(unsigned long)head->next;
+ while (item->next != TERMINATE) {
+ ci_flush_td((struct ept_queue_item *)(unsigned long)item->next);
+ item = (struct ept_queue_item *)(unsigned long)item->next;
+ }
DBG("ept%d %s queue len %x, req %p, buffer %p\n",
num, in ? "in" : "out", len, ci_req, ci_req->hw_buf);
writel(bit, &udc->epprime);
}
+static int ci_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req)
+{
+ struct ci_ep *ci_ep = container_of(_ep, struct ci_ep, ep);
+ struct ci_req *ci_req;
+
+ list_for_each_entry(ci_req, &ci_ep->queue, queue) {
+ if (&ci_req->req == _req)
+ break;
+ }
+
+ if (&ci_req->req != _req)
+ return -EINVAL;
+
+ list_del_init(&ci_req->queue);
+
+ if (ci_req->req.status == -EINPROGRESS) {
+ ci_req->req.status = -ECONNRESET;
+ if (ci_req->req.complete)
+ ci_req->req.complete(_ep, _req);
+ }
+
+ return 0;
+}
+
static int ci_ep_queue(struct usb_ep *ep,
struct usb_request *req, gfp_t gfp_flags)
{
static void flip_ep0_direction(void)
{
if (ep0_desc.bEndpointAddress == USB_DIR_IN) {
- DBG("%s: Flipping ep0 ot OUT\n", __func__);
+ DBG("%s: Flipping ep0 to OUT\n", __func__);
ep0_desc.bEndpointAddress = 0;
} else {
- DBG("%s: Flipping ep0 ot IN\n", __func__);
+ DBG("%s: Flipping ep0 to IN\n", __func__);
ep0_desc.bEndpointAddress = USB_DIR_IN;
}
}
-static void handle_ep_complete(struct ci_ep *ep)
+static void handle_ep_complete(struct ci_ep *ci_ep)
{
- struct ept_queue_item *item;
- int num, in, len;
+ struct ept_queue_item *item, *next_td;
+ int num, in, len, j;
struct ci_req *ci_req;
- num = ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
- in = (ep->desc->bEndpointAddress & USB_DIR_IN) != 0;
+ num = ci_ep->desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
+ in = (ci_ep->desc->bEndpointAddress & USB_DIR_IN) != 0;
item = ci_get_qtd(num, in);
ci_invalidate_qtd(num);
+ ci_req = list_first_entry(&ci_ep->queue, struct ci_req, queue);
- len = (item->info >> 16) & 0x7fff;
- if (item->info & 0xff)
- printf("EP%d/%s FAIL info=%x pg0=%x\n",
- num, in ? "in" : "out", item->info, item->page0);
+ next_td = item;
+ len = 0;
+ for (j = 0; j < ci_req->dtd_count; j++) {
+ ci_invalidate_td(next_td);
+ item = next_td;
+ len += (item->info >> 16) & 0x7fff;
+ if (item->info & 0xff)
+ printf("EP%d/%s FAIL info=%x pg0=%x\n",
+ num, in ? "in" : "out", item->info, item->page0);
+ if (j != ci_req->dtd_count - 1)
+ next_td = (struct ept_queue_item *)(unsigned long)
+ item->next;
+ if (j != 0)
+ free(item);
+ }
- ci_req = list_first_entry(&ep->queue, struct ci_req, queue);
list_del_init(&ci_req->queue);
- ep->req_primed = false;
+ ci_ep->req_primed = false;
- if (!list_empty(&ep->queue))
- ci_ep_submit_next_request(ep);
+ if (!list_empty(&ci_ep->queue))
+ ci_ep_submit_next_request(ci_ep);
ci_req->req.actual = ci_req->req.length - len;
ci_debounce(ci_req, in);
DBG("ept%d %s req %p, complete %x\n",
num, in ? "in" : "out", ci_req, len);
if (num != 0 || controller.ep0_data_phase)
- ci_req->req.complete(&ep->ep, &ci_req->req);
+ ci_req->req.complete(&ci_ep->ep, &ci_req->req);
if (num == 0 && controller.ep0_data_phase) {
/*
* Data Stage is complete, so flip ep0 dir for Status Stage,
flip_ep0_direction();
controller.ep0_data_phase = false;
ci_req->req.length = 0;
- usb_ep_queue(&ep->ep, &ci_req->req, 0);
+ usb_ep_queue(&ci_ep->ep, &ci_req->req, 0);
}
}
}
}
-int usb_gadget_handle_interrupts(void)
+int usb_gadget_handle_interrupts(int index)
{
u32 value;
struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
writel(USBCMD_ITC(MICRO_8FRAME) | USBCMD_RST, &udc->usbcmd);
udelay(200);
- writel((unsigned)controller.epts, &udc->epinitaddr);
+ ci_init_after_reset(controller.ctrl);
+
+ writel((unsigned long)controller.epts, &udc->epinitaddr);
/* select DEVICE mode */
writel(USBMODE_DEVICE, &udc->usbmode);
+#if !defined(CONFIG_USB_GADGET_DUALSPEED)
+ /* Port force Full-Speed Connect */
+ setbits_le32(&udc->portsc, PFSC);
+#endif
+
writel(0xffffffff, &udc->epflush);
/* Turn on the USB connection by enabling the pullup resistor */
- writel(USBCMD_ITC(MICRO_8FRAME) | USBCMD_RUN, &udc->usbcmd);
+ setbits_le32(&udc->usbcmd, USBCMD_ITC(MICRO_8FRAME) |
+ USBCMD_RUN);
} else {
udc_disconnect();
}
static int ci_udc_probe(void)
{
struct ept_queue_head *head;
- uint8_t *imem;
int i;
const int num = 2 * NUM_ENDPOINTS;
const int eplist_raw_sz = num * sizeof(struct ept_queue_head);
const int eplist_sz = roundup(eplist_raw_sz, ARCH_DMA_MINALIGN);
- const int ilist_align = roundup(ARCH_DMA_MINALIGN, 32);
- const int ilist_ent_raw_sz = 2 * sizeof(struct ept_queue_item);
- const int ilist_ent_sz = roundup(ilist_ent_raw_sz, ARCH_DMA_MINALIGN);
- const int ilist_sz = NUM_ENDPOINTS * ilist_ent_sz;
-
/* The QH list must be aligned to 4096 bytes. */
controller.epts = memalign(eplist_align, eplist_sz);
if (!controller.epts)
return -ENOMEM;
memset(controller.epts, 0, eplist_sz);
- /*
- * Each qTD item must be 32-byte aligned, each qTD touple must be
- * cacheline aligned. There are two qTD items for each endpoint and
- * only one of them is used for the endpoint at time, so we can group
- * them together.
- */
- controller.items_mem = memalign(ilist_align, ilist_sz);
+ controller.items_mem = memalign(ILIST_ALIGN, ILIST_SZ);
if (!controller.items_mem) {
free(controller.epts);
return -ENOMEM;
}
- memset(controller.items_mem, 0, ilist_sz);
+ memset(controller.items_mem, 0, ILIST_SZ);
for (i = 0; i < 2 * NUM_ENDPOINTS; i++) {
/*
head->next = TERMINATE;
head->info = 0;
- imem = controller.items_mem + ((i >> 1) * ilist_ent_sz);
- if (i & 1)
- imem += sizeof(struct ept_queue_item);
-
- controller.items[i] = (struct ept_queue_item *)imem;
-
if (i & 1) {
- ci_flush_qh(i - 1);
- ci_flush_qtd(i - 1);
+ ci_flush_qh(i / 2);
+ ci_flush_qtd(i / 2);
}
}
controller.gadget.ep0 = &controller.ep[0].ep;
INIT_LIST_HEAD(&controller.gadget.ep0->ep_list);
- /* Init EP 1..n */
- for (i = 1; i < NUM_ENDPOINTS; i++) {
- memcpy(&controller.ep[i].ep, &ci_ep_init[1],
+ /* Init EP 1..3 */
+ for (i = 1; i < 4; i++) {
+ memcpy(&controller.ep[i].ep, &ci_ep_init[i],
+ sizeof(*ci_ep_init));
+ INIT_LIST_HEAD(&controller.ep[i].queue);
+ controller.ep[i].req_primed = false;
+ list_add_tail(&controller.ep[i].ep.ep_list,
+ &controller.gadget.ep_list);
+ }
+
+ /* Init EP 4..n */
+ for (i = 4; i < NUM_ENDPOINTS; i++) {
+ memcpy(&controller.ep[i].ep, &ci_ep_init[4],
sizeof(*ci_ep_init));
INIT_LIST_HEAD(&controller.ep[i].queue);
controller.ep[i].req_primed = false;
if (driver->speed != USB_SPEED_FULL && driver->speed != USB_SPEED_HIGH)
return -EINVAL;
+#if CONFIG_IS_ENABLED(DM_USB)
+ ret = usb_setup_ehci_gadget(&controller.ctrl);
+#else
ret = usb_lowlevel_init(0, USB_INIT_DEVICE, (void **)&controller.ctrl);
+#endif
if (ret)
return ret;
ret = ci_udc_probe();
-#if defined(CONFIG_USB_EHCI_MX6) || defined(CONFIG_USB_EHCI_MXS)
- /*
- * FIXME: usb_lowlevel_init()->ehci_hcd_init() should be doing all
- * HW-specific initialization, e.g. ULPI-vs-UTMI PHY selection
- */
- if (!ret) {
- struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
-
- /* select ULPI phy */
- writel(PTS(PTS_ENABLE) | PFSC, &udc->portsc);
+ if (ret) {
+ DBG("udc probe failed, returned %d\n", ret);
+ return ret;
}
-#endif
ret = driver->bind(&controller.gadget);
if (ret) {
int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
{
+ udc_disconnect();
+
+ driver->unbind(&controller.gadget);
+ controller.driver = NULL;
+
+ ci_ep_free_request(&controller.ep[0].ep, &controller.ep0_req->req);
+ free(controller.items_mem);
+ free(controller.epts);
+
return 0;
}
+
+bool dfu_usb_get_reset(void)
+{
+ struct ci_udc *udc = (struct ci_udc *)controller.ctrl->hcor;
+
+ return !!(readl(&udc->usbsts) & STS_URI);
+}
projects / oweals / u-boot.git / blobdiff