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-rw-r--r--roms/SLOF/lib/libusb/usb-ehci.c609
1 files changed, 609 insertions, 0 deletions
diff --git a/roms/SLOF/lib/libusb/usb-ehci.c b/roms/SLOF/lib/libusb/usb-ehci.c
new file mode 100644
index 000000000..4cca0da15
--- /dev/null
+++ b/roms/SLOF/lib/libusb/usb-ehci.c
@@ -0,0 +1,609 @@
+/*****************************************************************************
+ * Copyright (c) 2013 IBM Corporation
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ * IBM Corporation - initial implementation
+ *****************************************************************************/
+
+#include <string.h>
+#include "usb.h"
+#include "usb-core.h"
+#include "usb-ehci.h"
+#include "tools.h"
+#include "paflof.h"
+
+#undef EHCI_DEBUG
+//#define EHCI_DEBUG
+#ifdef EHCI_DEBUG
+#define dprintf(_x ...) do { printf(_x); } while(0)
+#else
+#define dprintf(_x ...)
+#endif
+
+#ifdef EHCI_DEBUG
+static void dump_ehci_regs(struct ehci_hcd *ehcd)
+{
+ struct ehci_cap_regs *cap_regs;
+ struct ehci_op_regs *op_regs;
+
+ cap_regs = ehcd->cap_regs;
+ op_regs = ehcd->op_regs;
+
+ dprintf("\n - CAPLENGTH %02X", read_reg8(&cap_regs->caplength));
+ dprintf("\n - HCIVERSION %04X", read_reg16(&cap_regs->hciversion));
+ dprintf("\n - HCSPARAMS %08X", read_reg32(&cap_regs->hcsparams));
+ dprintf("\n - HCCPARAMS %08X", read_reg32(&cap_regs->hccparams));
+ dprintf("\n - HCSP_PORTROUTE %016llX", read_reg64(&cap_regs->portroute));
+ dprintf("\n");
+
+ dprintf("\n - USBCMD %08X", read_reg32(&op_regs->usbcmd));
+ dprintf("\n - USBSTS %08X", read_reg32(&op_regs->usbsts));
+ dprintf("\n - USBINTR %08X", read_reg32(&op_regs->usbintr));
+ dprintf("\n - FRINDEX %08X", read_reg32(&op_regs->frindex));
+ dprintf("\n - CTRLDSSEGMENT %08X", read_reg32(&op_regs->ctrldssegment));
+ dprintf("\n - PERIODICLISTBASE %08X", read_reg32(&op_regs->periodiclistbase));
+ dprintf("\n - ASYNCLISTADDR %08X", read_reg32(&op_regs->asynclistaddr));
+ dprintf("\n - CONFIGFLAG %08X", read_reg32(&op_regs->configflag));
+ dprintf("\n - PORTSC %08X", read_reg32(&op_regs->portsc[0]));
+ dprintf("\n");
+}
+#endif
+
+static int ehci_hub_check_ports(struct ehci_hcd *ehcd)
+{
+ uint32_t num_ports, portsc, i;
+ struct usb_dev *dev;
+
+ dprintf("%s: enter\n", __func__);
+ num_ports = read_reg32(&ehcd->cap_regs->hcsparams) & HCS_NPORTS_MASK;
+ for (i = 0; i < num_ports; i++) {
+ dprintf("%s: device %d\n", __func__, i);
+ portsc = read_reg32(&ehcd->op_regs->portsc[i]);
+ if (portsc & PORT_CONNECT) { /* Device present */
+ dprintf("usb-ehci: Device present on port %d\n", i);
+ /* Reset the port */
+ portsc = read_reg32(&ehcd->op_regs->portsc[i]);
+ portsc = (portsc & ~PORT_PE) | PORT_RESET;
+ write_reg32(&ehcd->op_regs->portsc[i], portsc);
+ SLOF_msleep(20);
+ portsc = read_reg32(&ehcd->op_regs->portsc[i]);
+ portsc &= ~PORT_RESET;
+ write_reg32(&ehcd->op_regs->portsc[i], portsc);
+ SLOF_msleep(20);
+ dev = usb_devpool_get();
+ dprintf("usb-ehci: allocated device %p\n", dev);
+ dev->hcidev = ehcd->hcidev;
+ dev->speed = USB_HIGH_SPEED; /* TODO: Check for Low/Full speed device */
+ if (!setup_new_device(dev, i))
+ printf("usb-ehci: unable to setup device on port %d\n", i);
+ }
+ }
+ dprintf("%s: exit\n", __func__);
+ return 0;
+}
+
+static int ehci_hcd_init(struct ehci_hcd *ehcd)
+{
+ uint32_t usbcmd;
+ uint32_t time;
+ struct ehci_framelist *fl;
+ struct ehci_qh *qh_intr, *qh_async;
+ int i;
+ long fl_phys = 0, qh_intr_phys = 0, qh_async_phys;
+
+ /* Reset the host controller */
+ time = SLOF_GetTimer() + 250;
+ usbcmd = read_reg32(&ehcd->op_regs->usbcmd);
+ write_reg32(&ehcd->op_regs->usbcmd, (usbcmd & ~(CMD_PSE | CMD_ASE)) | CMD_HCRESET);
+ while (time > SLOF_GetTimer())
+ cpu_relax();
+ usbcmd = read_reg32(&ehcd->op_regs->usbcmd);
+ if (usbcmd & CMD_HCRESET) {
+ printf("usb-ehci: reset failed\n");
+ return -1;
+ }
+
+ /* Initialize periodic list */
+ fl = SLOF_dma_alloc(sizeof(*fl));
+ if (!fl) {
+ printf("usb-ehci: Unable to allocate frame list\n");
+ goto fail;
+ }
+ fl_phys = SLOF_dma_map_in(fl, sizeof(*fl), true);
+ dprintf("fl %p, fl_phys %lx\n", fl, fl_phys);
+
+ /* TODO: allocate qh pool */
+ qh_intr = SLOF_dma_alloc(sizeof(*qh_intr));
+ if (!qh_intr) {
+ printf("usb-ehci: Unable to allocate interrupt queue head\n");
+ goto fail_qh_intr;
+ }
+ qh_intr_phys = SLOF_dma_map_in(qh_intr, sizeof(*qh_intr), true);
+ dprintf("qh_intr %p, qh_intr_phys %lx\n", qh_intr, qh_intr_phys);
+
+ memset(qh_intr, 0, sizeof(*qh_intr));
+ qh_intr->qh_ptr = QH_PTR_TERM;
+ qh_intr->ep_cap2 = cpu_to_le32(0x01 << QH_SMASK_SHIFT);
+ qh_intr->next_qtd = qh_intr->alt_next_qtd = QH_PTR_TERM;
+ qh_intr->token = cpu_to_le32(QH_STS_HALTED);
+ for (i = 0; i < FL_SIZE; i++)
+ fl->fl_ptr[i] = cpu_to_le32(qh_intr_phys | EHCI_TYP_QH);
+ write_reg32(&ehcd->op_regs->periodiclistbase, fl_phys);
+
+ /* Initialize async list */
+ qh_async = SLOF_dma_alloc(sizeof(*qh_async));
+ if (!qh_async) {
+ printf("usb-ehci: Unable to allocate async queue head\n");
+ goto fail_qh_async;
+ }
+ qh_async_phys = SLOF_dma_map_in(qh_async, sizeof(*qh_async), true);
+ dprintf("qh_async %p, qh_async_phys %lx\n", qh_async, qh_async_phys);
+
+ memset(qh_async, 0, sizeof(*qh_async));
+ qh_async->qh_ptr = cpu_to_le32(qh_async_phys | EHCI_TYP_QH);
+ qh_async->ep_cap1 = cpu_to_le32(QH_CAP_H);
+ qh_async->next_qtd = qh_async->alt_next_qtd = QH_PTR_TERM;
+ qh_async->token = cpu_to_le32(QH_STS_HALTED);
+ write_reg32(&ehcd->op_regs->asynclistaddr, qh_async_phys);
+ ehcd->qh_async = qh_async;
+ ehcd->qh_async_phys = qh_async_phys;
+ ehcd->qh_intr = qh_intr;
+ ehcd->qh_intr_phys = qh_intr_phys;
+ ehcd->fl = fl;
+ ehcd->fl_phys = fl_phys;
+
+ write_reg32(&ehcd->op_regs->usbcmd, usbcmd | CMD_ASE | CMD_RUN);
+ write_reg32(&ehcd->op_regs->configflag, 1);
+
+ return 0;
+
+fail_qh_async:
+ SLOF_dma_map_out(qh_intr_phys, qh_intr, sizeof(*qh_intr));
+ SLOF_dma_free(qh_intr, sizeof(*qh_intr));
+fail_qh_intr:
+ SLOF_dma_map_out(fl_phys, fl, sizeof(*fl));
+ SLOF_dma_free(fl, sizeof(*fl));
+fail:
+ return -1;
+}
+
+static int ehci_hcd_exit(struct ehci_hcd *ehcd)
+{
+ uint32_t usbcmd;
+
+ if (!ehcd) {
+ dprintf("NULL pointer\n");
+ return false;
+ }
+
+ usbcmd = read_reg32(&ehcd->op_regs->usbcmd);
+ write_reg32(&ehcd->op_regs->usbcmd, usbcmd | ~CMD_RUN);
+ write_reg32(&ehcd->op_regs->periodiclistbase, 0);
+
+ if (ehcd->pool) {
+ SLOF_dma_map_out(ehcd->pool_phys, ehcd->pool, EHCI_PIPE_POOL_SIZE);
+ SLOF_dma_free(ehcd->pool, EHCI_PIPE_POOL_SIZE);
+ }
+ if (ehcd->qh_intr) {
+ SLOF_dma_map_out(ehcd->qh_intr_phys, ehcd->qh_intr, sizeof(struct ehci_qh));
+ SLOF_dma_free(ehcd->qh_intr, sizeof(struct ehci_qh));
+ }
+ if (ehcd->qh_async) {
+ SLOF_dma_map_out(ehcd->qh_async_phys, ehcd->qh_async, sizeof(struct ehci_qh));
+ SLOF_dma_free(ehcd->qh_async, sizeof(struct ehci_qh));
+ }
+ if (ehcd->fl) {
+ SLOF_dma_map_out(ehcd->fl_phys, ehcd->fl, sizeof(struct ehci_framelist));
+ SLOF_dma_free(ehcd->fl, sizeof(struct ehci_framelist));
+ }
+ return true;
+}
+
+static int ehci_alloc_pipe_pool(struct ehci_hcd *ehcd)
+{
+ struct ehci_pipe *epipe, *curr, *prev;
+ unsigned int i, count;
+ long epipe_phys = 0;
+
+ count = EHCI_PIPE_POOL_SIZE/sizeof(*epipe);
+ ehcd->pool = epipe = SLOF_dma_alloc(EHCI_PIPE_POOL_SIZE);
+ if (!epipe)
+ return -1;
+ ehcd->pool_phys = epipe_phys = SLOF_dma_map_in(epipe, EHCI_PIPE_POOL_SIZE, true);
+ dprintf("%s: epipe %p, epipe_phys %lx\n", __func__, epipe, epipe_phys);
+
+ /* Although an array, link them */
+ for (i = 0, curr = epipe, prev = NULL; i < count; i++, curr++) {
+ if (prev)
+ prev->pipe.next = &curr->pipe;
+ curr->pipe.next = NULL;
+ prev = curr;
+ curr->qh_phys = epipe_phys + (curr - epipe) * sizeof(*curr) +
+ offset_of(struct ehci_pipe, qh);
+ dprintf("%s - %d: qh %p, qh_phys %lx\n", __func__,
+ i, &curr->qh, curr->qh_phys);
+ }
+
+ if (!ehcd->freelist)
+ ehcd->freelist = &epipe->pipe;
+ else
+ ehcd->end->next = &epipe->pipe;
+ ehcd->end = &prev->pipe;
+
+ return 0;
+}
+
+static void ehci_init(struct usb_hcd_dev *hcidev)
+{
+ struct ehci_hcd *ehcd;
+
+ printf(" EHCI: Initializing\n");
+ dprintf("%s: device base address %p\n", __func__, hcidev->base);
+
+ ehcd = SLOF_alloc_mem(sizeof(*ehcd));
+ if (!ehcd) {
+ printf("usb-ehci: Unable to allocate memory\n");
+ return;
+ }
+ memset(ehcd, 0, sizeof(*ehcd));
+
+ hcidev->nextaddr = 1;
+ hcidev->priv = ehcd;
+ ehcd->hcidev = hcidev;
+ ehcd->cap_regs = (struct ehci_cap_regs *)(hcidev->base);
+ ehcd->op_regs = (struct ehci_op_regs *)(hcidev->base +
+ read_reg8(&ehcd->cap_regs->caplength));
+#ifdef EHCI_DEBUG
+ dump_ehci_regs(ehcd);
+#endif
+ ehci_hcd_init(ehcd);
+ ehci_hub_check_ports(ehcd);
+}
+
+static void ehci_exit(struct usb_hcd_dev *hcidev)
+{
+ struct ehci_hcd *ehcd;
+ static int count = 0;
+
+ dprintf("%s: enter \n", __func__);
+
+ if (!hcidev && !hcidev->priv) {
+ return;
+ }
+ count++;
+ if (count > 1) {
+ printf("%s: already called once \n", __func__);
+ return;
+ }
+ ehcd = hcidev->priv;
+ ehci_hcd_exit(ehcd);
+ SLOF_free_mem(ehcd, sizeof(*ehcd));
+ hcidev->priv = NULL;
+}
+
+static void ehci_detect(void)
+{
+
+}
+
+static void ehci_disconnect(void)
+{
+
+}
+
+static int ehci_handshake(struct ehci_hcd *ehcd, uint32_t timeout)
+{
+ uint32_t usbsts = 0, time;
+ uint32_t usbcmd;
+ mb();
+ usbcmd = read_reg32(&ehcd->op_regs->usbcmd);
+ /* Ring a doorbell */
+ write_reg32(&ehcd->op_regs->usbcmd, usbcmd | CMD_IAAD);
+ mb();
+ time = SLOF_GetTimer() + timeout;
+ while ((time > SLOF_GetTimer())) {
+ /* Wait for controller to confirm */
+ usbsts = read_reg32(&ehcd->op_regs->usbsts);
+ if (usbsts & STS_IAA) {
+ /* Acknowledge it, for next doorbell to work */
+ write_reg32(&ehcd->op_regs->usbsts, STS_IAA);
+ return true;
+ }
+ cpu_relax();
+ }
+ return false;
+}
+
+static int fill_qtd_buff(struct ehci_qtd *qtd, long data, uint32_t size)
+{
+ long i, rem;
+ long pos = (data + 0x1000) & ~0xfff;
+
+ qtd->buffer[0] = cpu_to_le32(PTR_U32(data));
+ for (i = 1; i < 5; i++) {
+ if ((data + size - 1) >= pos) {
+ //dprintf("data spans page boundary: %d, %p\n", i, pos);
+ qtd->buffer[i] = cpu_to_le32(pos);
+ pos += 0x1000;
+ } else
+ break;
+ }
+ if ((data + size) > pos)
+ rem = data + size - pos;
+ else
+ rem = 0;
+ return rem;
+}
+
+static int ehci_send_ctrl(struct usb_pipe *pipe, struct usb_dev_req *req, void *data)
+{
+ struct ehci_hcd *ehcd;
+ struct ehci_qtd *qtd, *qtds, *qtds_phys;
+ struct ehci_pipe *epipe;
+ uint32_t transfer_size = sizeof(*req);
+ uint32_t datalen, pid;
+ uint32_t time;
+ long req_phys = 0, data_phys = 0;
+ int ret = true;
+
+ if (pipe->type != USB_EP_TYPE_CONTROL) {
+ printf("usb-ehci: Not a control pipe.\n");
+ return false;
+ }
+
+ ehcd = pipe->dev->hcidev->priv;
+ qtds = qtd = SLOF_dma_alloc(sizeof(*qtds) * 3);
+ if (!qtds) {
+ printf("Error allocating qTDs.\n");
+ return false;
+ }
+ qtds_phys = (struct ehci_qtd *)SLOF_dma_map_in(qtds, sizeof(*qtds) * 3, true);
+ memset(qtds, 0, sizeof(*qtds) * 3);
+ req_phys = SLOF_dma_map_in(req, sizeof(struct usb_dev_req), true);
+ qtd->next_qtd = cpu_to_le32(PTR_U32(&qtds_phys[1]));
+ qtd->alt_next_qtd = QH_PTR_TERM;
+ qtd->token = cpu_to_le32((transfer_size << TOKEN_TBTT_SHIFT) |
+ (3 << TOKEN_CERR_SHIFT) |
+ (PID_SETUP << TOKEN_PID_SHIFT) |
+ (QH_STS_ACTIVE << TOKEN_STATUS_SHIFT));
+ fill_qtd_buff(qtd, req_phys, sizeof(*req));
+
+ qtd++;
+ datalen = cpu_to_le16(req->wLength);
+ pid = (req->bmRequestType & REQT_DIR_IN) ? PID_IN : PID_OUT;
+ if (datalen) {
+ data_phys = SLOF_dma_map_in(data, datalen, true);
+ qtd->next_qtd = cpu_to_le32(PTR_U32(&qtds_phys[2]));
+ qtd->alt_next_qtd = QH_PTR_TERM;
+ qtd->token = cpu_to_le32((1 << TOKEN_DT_SHIFT) |
+ (datalen << TOKEN_TBTT_SHIFT) |
+ (3 << TOKEN_CERR_SHIFT) |
+ (pid << TOKEN_PID_SHIFT) |
+ (QH_STS_ACTIVE << TOKEN_STATUS_SHIFT));
+ fill_qtd_buff(qtd, data_phys, datalen);
+ qtd++;
+ }
+
+ if (pid == PID_IN)
+ pid = PID_OUT;
+ else
+ pid = PID_IN;
+ qtd->next_qtd = QH_PTR_TERM;
+ qtd->alt_next_qtd = QH_PTR_TERM;
+ qtd->token = cpu_to_le32((1 << TOKEN_DT_SHIFT) |
+ (3 << TOKEN_CERR_SHIFT) |
+ (pid << TOKEN_PID_SHIFT) |
+ (QH_STS_ACTIVE << TOKEN_STATUS_SHIFT));
+
+ /* link qtd to qh and attach to ehcd */
+ mb();
+ epipe = container_of(pipe, struct ehci_pipe, pipe);
+ epipe->qh.next_qtd = cpu_to_le32(PTR_U32(qtds_phys));
+ epipe->qh.qh_ptr = cpu_to_le32(ehcd->qh_async_phys | EHCI_TYP_QH);
+ epipe->qh.ep_cap1 = cpu_to_le32((pipe->mps << QH_MPS_SHIFT) |
+ (pipe->speed << QH_EPS_SHIFT) |
+ (pipe->epno << QH_EP_SHIFT) |
+ (pipe->dev->addr << QH_DEV_ADDR_SHIFT));
+ mb();
+
+ ehcd->qh_async->qh_ptr = cpu_to_le32(epipe->qh_phys | EHCI_TYP_QH);
+
+ /* transfer data */
+ mb();
+ qtd = &qtds[0];
+ time = SLOF_GetTimer() + USB_TIMEOUT;
+ do {
+ if (le32_to_cpu(qtd->token) & (QH_STS_ACTIVE << TOKEN_STATUS_SHIFT))
+ mb();
+ else
+ qtd++;
+
+ if (time < SLOF_GetTimer()) { /* timed out */
+ printf("usb-ehci: control transfer timed out_\n");
+ ret = false;
+ break;
+ }
+ } while (qtd->next_qtd != QH_PTR_TERM);
+
+ ehcd->qh_async->qh_ptr = cpu_to_le32(ehcd->qh_async_phys | EHCI_TYP_QH);
+ mb();
+ if (!ehci_handshake(ehcd, USB_TIMEOUT)) {
+ printf("%s: handshake failed\n", __func__);
+ ret = false;
+ }
+
+ SLOF_dma_map_out(req_phys, req, sizeof(struct usb_dev_req));
+ SLOF_dma_map_out(data_phys, data, datalen);
+ SLOF_dma_map_out(PTR_U32(qtds_phys), qtds, sizeof(*qtds) * 3);
+ SLOF_dma_free(qtds, sizeof(*qtds) * 3);
+
+ return ret;
+}
+
+static int ehci_transfer_bulk(struct usb_pipe *pipe, void *td, void *td_phys,
+ void *data_phys, int size)
+{
+ struct ehci_hcd *ehcd;
+ struct ehci_qtd *qtd, *qtd_phys;
+ struct ehci_pipe *epipe;
+ uint32_t pid;
+ int i, rem, ret = true;
+ uint32_t time;
+ long ptr;
+
+ dprintf("usb-ehci: bulk transfer: data %p, size %d, td %p, td_phys %p\n",
+ data_phys, size, td, td_phys);
+
+ if (pipe->type != USB_EP_TYPE_BULK) {
+ printf("usb-ehci: Not a bulk pipe.\n");
+ return false;
+ }
+
+ if (size > QTD_MAX_TRANSFER_LEN) {
+ printf("usb-ehci: bulk transfer size too big\n");
+ return false;
+ }
+
+ ehcd = pipe->dev->hcidev->priv;
+ pid = (pipe->dir == USB_PIPE_OUT) ? PID_OUT : PID_IN;
+ qtd = (struct ehci_qtd *)td;
+ qtd_phys = (struct ehci_qtd *)td_phys;
+ ptr = (long)data_phys;
+ for (i = 0; i < NUM_BULK_QTDS; i++) {
+ memset(qtd, 0, sizeof(*qtd));
+ rem = fill_qtd_buff(qtd, ptr, size);
+ qtd->token = cpu_to_le32((1 << TOKEN_DT_SHIFT) |
+ ((size - rem) << TOKEN_TBTT_SHIFT) |
+ (3 << TOKEN_CERR_SHIFT) |
+ (pid << TOKEN_PID_SHIFT) |
+ (QH_STS_ACTIVE << TOKEN_STATUS_SHIFT));
+ if (rem) {
+ qtd->next_qtd = cpu_to_le32(PTR_U32(&qtd_phys[i+1]));
+ qtd->alt_next_qtd = QH_PTR_TERM;
+ ptr += size - rem;
+ size = rem;
+ qtd++;
+ } else {
+ qtd->next_qtd = qtd->alt_next_qtd = QH_PTR_TERM;
+ break; /* no more data */
+ }
+ }
+
+ /* link qtd to qh and attach to ehcd */
+ mb();
+ epipe = container_of(pipe, struct ehci_pipe, pipe);
+ epipe->qh.next_qtd = cpu_to_le32(PTR_U32(qtd_phys));
+ epipe->qh.qh_ptr = cpu_to_le32(ehcd->qh_async_phys | EHCI_TYP_QH);
+ epipe->qh.ep_cap1 = cpu_to_le32((pipe->mps << QH_MPS_SHIFT) |
+ (pipe->speed << QH_EPS_SHIFT) |
+ (pipe->epno << QH_EP_SHIFT) |
+ (pipe->dev->addr << QH_DEV_ADDR_SHIFT));
+ mb();
+
+ ehcd->qh_async->qh_ptr = cpu_to_le32(epipe->qh_phys | EHCI_TYP_QH);
+
+ /* transfer data */
+ mb();
+ qtd = (struct ehci_qtd *)td;
+ for (i = 0; i < NUM_BULK_QTDS; i++) {
+ time = SLOF_GetTimer() + USB_TIMEOUT;
+ while ((time > SLOF_GetTimer()) &&
+ (le32_to_cpu(qtd->token) & (QH_STS_ACTIVE << TOKEN_STATUS_SHIFT)))
+ cpu_relax();
+ mb();
+ if (qtd->next_qtd == QH_PTR_TERM)
+ break;
+
+ if (le32_to_cpu(qtd->token) & (QH_STS_ACTIVE << TOKEN_STATUS_SHIFT)) {
+ printf("usb-ehci: bulk transfer timed out_\n");
+ ret = false;
+ break;
+ }
+ qtd++;
+ }
+
+ ehcd->qh_async->qh_ptr = cpu_to_le32(ehcd->qh_async_phys | EHCI_TYP_QH);
+ mb();
+ if (!ehci_handshake(ehcd, USB_TIMEOUT)) {
+ printf("%s: handshake failed\n", __func__);
+ ret = false;
+ }
+ return ret;
+}
+
+static struct usb_pipe *ehci_get_pipe(struct usb_dev *dev, struct usb_ep_descr *ep,
+ char *buf, size_t len)
+{
+ struct ehci_hcd *ehcd;
+ struct usb_pipe *new = NULL;
+
+ if (!dev)
+ return NULL;
+
+ ehcd = (struct ehci_hcd *)dev->hcidev->priv;
+ if (!ehcd->freelist) {
+ dprintf("usb-ehci: %s allocating pool\n", __func__);
+ if (ehci_alloc_pipe_pool(ehcd))
+ return NULL;
+ }
+
+ new = ehcd->freelist;
+ ehcd->freelist = ehcd->freelist->next;
+ if (!ehcd->freelist)
+ ehcd->end = NULL;
+
+ memset(new, 0, sizeof(*new));
+ new->dev = dev;
+ new->next = NULL;
+ new->type = ep->bmAttributes & USB_EP_TYPE_MASK;
+ new->speed = dev->speed;
+ new->mps = ep->wMaxPacketSize;
+ new->dir = (ep->bEndpointAddress & 0x80) >> 7;
+ new->epno = ep->bEndpointAddress & 0x0f;
+
+ return new;
+}
+
+static void ehci_put_pipe(struct usb_pipe *pipe)
+{
+ struct ehci_hcd *ehcd;
+
+ dprintf("usb-ehci: %s enter - %p\n", __func__, pipe);
+ if (!pipe || !pipe->dev)
+ return;
+ ehcd = pipe->dev->hcidev->priv;
+ if (ehcd->end)
+ ehcd->end->next = pipe;
+ else
+ ehcd->freelist = pipe;
+
+ ehcd->end = pipe;
+ pipe->next = NULL;
+ pipe->dev = NULL;
+ memset(pipe, 0, sizeof(*pipe));
+ dprintf("usb-ehci: %s exit\n", __func__);
+}
+
+struct usb_hcd_ops ehci_ops = {
+ .name = "ehci-hcd",
+ .init = ehci_init,
+ .exit = ehci_exit,
+ .detect = ehci_detect,
+ .disconnect = ehci_disconnect,
+ .get_pipe = ehci_get_pipe,
+ .put_pipe = ehci_put_pipe,
+ .send_ctrl = ehci_send_ctrl,
+ .transfer_bulk = ehci_transfer_bulk,
+ .usb_type = USB_EHCI,
+ .next = NULL,
+};
+
+void usb_ehci_register(void)
+{
+ usb_hcd_register(&ehci_ops);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-10 04:23:48 +0000