[U-Boot] [RFC PATCH V2 2/3] USB ehci core support
Michael Trimarchi
trimarchi at gandalf.sssup.it
Fri Nov 28 13:20:46 CET 2008
Add USB ehci core support
Signed-off-by: Michael Trimarchi <trimarchi at gandalf.sssup.it>
---
drivers/usb/Makefile | 1 +
drivers/usb/usb_ehci.h | 121 ++++++++
drivers/usb/usb_ehci_core.c | 634 +++++++++++++++++++++++++++++++++++++++++++
drivers/usb/usb_ehci_core.h | 29 ++
4 files changed, 785 insertions(+), 0 deletions(-)
create mode 100644 drivers/usb/usb_ehci.h
create mode 100644 drivers/usb/usb_ehci_core.c
create mode 100644 drivers/usb/usb_ehci_core.h
diff --git a/drivers/usb/Makefile b/drivers/usb/Makefile
index 856f51a..fbc6521 100644
--- a/drivers/usb/Makefile
+++ b/drivers/usb/Makefile
@@ -28,6 +28,7 @@ LIB := $(obj)libusb.a
# core
COBJS-y += usbdcore.o
COBJS-$(CONFIG_USB_OHCI_NEW) += usb_ohci.o
+COBJS-$(CONFIG_USB_EHCI) += usb_ehci_core.o
# host
COBJS-$(CONFIG_USB_ISP116X_HCD) += isp116x-hcd.o
diff --git a/drivers/usb/usb_ehci.h b/drivers/usb/usb_ehci.h
new file mode 100644
index 0000000..ebffb44
--- /dev/null
+++ b/drivers/usb/usb_ehci.h
@@ -0,0 +1,121 @@
+/*-
+ * Copyright (c) 2007-2008, Juniper Networks, Inc.
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2 of
+ * the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef USB_EHCI_H
+#define USB_EHCI_H
+
+/* (shifted) direction/type/recipient from the USB 2.0 spec, table 9.2 */
+#define DeviceRequest \
+ ((USB_DIR_IN | USB_TYPE_STANDARD | USB_RECIP_DEVICE) << 8)
+#define DeviceOutRequest \
+ ((USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_DEVICE) << 8)
+
+#define InterfaceRequest \
+ ((USB_DIR_IN | USB_TYPE_STANDARD | USB_RECIP_INTERFACE) << 8)
+
+#define EndpointRequest \
+ ((USB_DIR_IN | USB_TYPE_STANDARD | USB_RECIP_INTERFACE) << 8)
+#define EndpointOutRequest \
+ ((USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_INTERFACE) << 8)
+
+/*
+ * Register Space.
+ */
+struct ehci_hccr {
+ uint8_t cr_caplength;
+ uint16_t cr_hciversion;
+ uint32_t cr_hcsparams;
+ uint32_t cr_hccparams;
+ uint8_t cr_hcsp_portrt[8];
+};
+
+struct ehci_hcor {
+ uint32_t or_usbcmd;
+ uint32_t or_usbsts;
+ uint32_t or_usbintr;
+ uint32_t or_frindex;
+ uint32_t or_ctrldssegment;
+ uint32_t or_periodiclistbase;
+ uint32_t or_asynclistaddr;
+ uint32_t _reserved_[9];
+ uint32_t or_configflag;
+ uint32_t or_portsc[2];
+ uint32_t or_systune;
+};
+
+#define EHCI_PS_WKOC_E 0x00400000 /* RW wake on over current */
+#define EHCI_PS_WKDSCNNT_E 0x00200000 /* RW wake on disconnect */
+#define EHCI_PS_WKCNNT_E 0x00100000 /* RW wake on connect */
+#define EHCI_PS_PTC 0x000f0000 /* RW port test control */
+#define EHCI_PS_PIC 0x0000c000 /* RW port indicator control */
+#define EHCI_PS_PO 0x00002000 /* RW port owner */
+#define EHCI_PS_PP 0x00001000 /* RW,RO port power */
+#define EHCI_PS_LS 0x00000c00 /* RO line status */
+#define EHCI_PS_PR 0x00000100 /* RW port reset */
+#define EHCI_PS_SUSP 0x00000080 /* RW suspend */
+#define EHCI_PS_FPR 0x00000040 /* RW force port resume */
+#define EHCI_PS_OCC 0x00000020 /* RWC over current change */
+#define EHCI_PS_OCA 0x00000010 /* RO over current active */
+#define EHCI_PS_PEC 0x00000008 /* RWC port enable change */
+#define EHCI_PS_PE 0x00000004 /* RW port enable */
+#define EHCI_PS_CSC 0x00000002 /* RWC connect status change */
+#define EHCI_PS_CS 0x00000001 /* RO connect status */
+#define EHCI_PS_CLEAR (EHCI_PS_OCC | EHCI_PS_PEC | EHCI_PS_CSC)
+
+#define EHCI_PS_IS_LOWSPEED(x) (((x) & EHCI_PS_LS) == 0x00000400)
+
+/*
+ * Schedule Interface Space.
+ *
+ * IMPORTANT: Software must ensure that no interface data structure
+ * reachable by the EHCI host controller spans a 4K page boundary!
+ *
+ * Periodic transfers (i.e. isochronous and interrupt transfers) are
+ * not supported.
+ */
+
+/* Queue Element Transfer Descriptor (qTD). */
+struct qTD {
+ uint32_t qt_next;
+#define QT_NEXT_TERMINATE 1
+ uint32_t qt_altnext;
+ uint32_t qt_token;
+ uint32_t qt_buffer[5];
+};
+
+/* Queue Head (QH). */
+struct QH {
+ uint32_t qh_link;
+#define QH_LINK_TERMINATE 1
+#define QH_LINK_TYPE_ITD 0
+#define QH_LINK_TYPE_QH 2
+#define QH_LINK_TYPE_SITD 4
+#define QH_LINK_TYPE_FSTN 6
+ uint32_t qh_endpt1;
+ uint32_t qh_endpt2;
+ uint32_t qh_curtd;
+ struct qTD qh_overlay;
+};
+
+/* Low level intit functions */
+
+int ehci_hcd_init(void);
+int ehci_hcd_stop(void);
+#endif /* USB_EHCI_H */
diff --git a/drivers/usb/usb_ehci_core.c b/drivers/usb/usb_ehci_core.c
new file mode 100644
index 0000000..6627d0b
--- /dev/null
+++ b/drivers/usb/usb_ehci_core.c
@@ -0,0 +1,634 @@
+/*-
+ * Copyright (c) 2007-2008, Juniper Networks, Inc.
+ * Copyright (c) 2008, Excito Elektronik i Skåne AB
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2 of
+ * the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <usb.h>
+#include <asm/io.h>
+#include "usb_ehci.h"
+
+int rootdev;
+struct ehci_hccr *hccr; /* R/O registers, not need for volatile */
+volatile struct ehci_hcor *hcor;
+
+static uint16_t portreset;
+static struct QH qh_list __attribute__((aligned(32)));
+
+struct usb_device_descriptor device = {
+ sizeof(struct usb_device_descriptor), /* bLength */
+ 1, /* bDescriptorType: UDESC_DEVICE */
+ 0x0002, /* bcdUSB: v2.0 */
+ 9, /* bDeviceClass: UDCLASS_HUB */
+ 0, /* bDeviceSubClass: UDSUBCLASS_HUB */
+ 1, /* bDeviceProtocol: UDPROTO_HSHUBSTT */
+ 64, /* bMaxPacketSize: 64 bytes */
+ 0x0000, /* idVendor */
+ 0x0000, /* idProduct */
+ 0x0001, /* bcdDevice */
+ 1, /* iManufacturer */
+ 2, /* iProduct */
+ 0, /* iSerialNumber */
+ 1 /* bNumConfigurations: 1 */
+};
+
+struct usb_config_descriptor config = {
+ sizeof(struct usb_config_descriptor),
+ 2, /* bDescriptorType: UDESC_CONFIG */
+ sizeof(struct usb_config_descriptor) +
+ sizeof(struct usb_interface_descriptor) +
+ sizeof(struct usb_endpoint_descriptor),
+ 0,
+ 1, /* bNumInterface */
+ 1, /* bConfigurationValue */
+ 0, /* iConfiguration */
+ 0x40, /* bmAttributes: UC_SELF_POWER */
+ 0 /* bMaxPower */
+};
+
+struct usb_interface_descriptor interface = {
+ sizeof(struct usb_interface_descriptor), /* bLength */
+ 4, /* bDescriptorType: UDESC_INTERFACE */
+ 0, /* bInterfaceNumber */
+ 0, /* bAlternateSetting */
+ 1, /* bNumEndpoints */
+ 9, /* bInterfaceClass: UICLASS_HUB */
+ 0, /* bInterfaceSubClass: UISUBCLASS_HUB */
+ 0, /* bInterfaceProtocol: UIPROTO_HSHUBSTT */
+ 0 /* iInterface */
+};
+
+struct usb_endpoint_descriptor endpoint = {
+sizeof(struct usb_endpoint_descriptor), /* bLength */
+ 5, /* bDescriptorType: UDESC_ENDPOINT */
+ 0x81, /* bEndpointAddress: UE_DIR_IN | EHCI_INTR_ENDPT */
+ 3, /* bmAttributes: UE_INTERRUPT */
+ 8, 0, /* wMaxPacketSize */
+ 255 /* bInterval */
+};
+
+struct usb_hub_descriptor hub = {
+ sizeof(struct usb_hub_descriptor), /* bDescLength */
+ 0x29, /* bDescriptorType: hub descriptor */
+ 2, /* bNrPorts -- runtime modified */
+ 0, 0, /* wHubCharacteristics */
+ 0xff, /* bPwrOn2PwrGood */
+ {}, /* bHubCntrCurrent */
+ {} /* at most 7 ports! XXX */
+};
+
+static void *ehci_alloc(size_t sz, size_t align)
+{
+ static struct QH qh __attribute__((aligned(32)));
+ static struct qTD td[3] __attribute__((aligned (32)));
+ static int ntds;
+ void *p;
+
+ switch (sz) {
+ case sizeof(struct QH):
+ p = &qh;
+ ntds = 0;
+ break;
+ case sizeof(struct qTD):
+ if (ntds == 3) {
+ debug("out of TDs");
+ return NULL;
+ }
+ p = &td[ntds];
+ ntds++;
+ break;
+ default:
+ debug("unknown allocation size");
+ return NULL;
+ }
+
+ memset(p, sz, 0);
+ return p;
+}
+
+static void ehci_free(void *p, size_t sz)
+{
+}
+
+static int ehci_td_buffer(struct qTD *td, void *buf, size_t sz)
+{
+ uint32_t addr, delta, next;
+ int idx;
+
+ addr = (uint32_t) buf;
+ idx = 0;
+ while (idx < 5) {
+ td->qt_buffer[idx] = cpu_to_le32(addr);
+ next = (addr + 4096) & ~4095;
+ delta = next - addr;
+ if (delta >= sz)
+ break;
+ sz -= delta;
+ addr = next;
+ idx++;
+ }
+
+ if (idx == 5) {
+ debug("out of buffer pointers (%u bytes left)", sz);
+ return -1;
+ }
+
+ return 0;
+}
+
+static int
+ehci_submit_async(struct usb_device *dev, unsigned long pipe, void *buffer,
+ int length, struct devrequest *req)
+{
+ struct QH *qh;
+ struct qTD *td;
+ volatile struct qTD *vtd;
+ unsigned long ts;
+ uint32_t *tdp;
+ uint32_t endpt, token, usbsts;
+ uint32_t c, toggle;
+
+ debug("dev=%p, pipe=%lx, buffer=%p, length=%d, req=%p", dev, pipe,
+ buffer, length, req);
+ if (req != NULL)
+ debug("req=%u (%#x), type=%u (%#x), value=%u (%#x), index=%u",
+ req->request, req->request,
+ req->requesttype, req->requesttype,
+ le16_to_cpu(req->value), le16_to_cpu(req->value),
+ le16_to_cpu(req->index), le16_to_cpu(req->index));
+
+ qh = ehci_alloc(sizeof(struct QH), 32);
+ if (qh == NULL) {
+ debug("unable to allocate QH");
+ return -1;
+ }
+ qh->qh_link = cpu_to_le32((uint32_t)&qh_list | QH_LINK_TYPE_QH);
+ c = (usb_pipespeed(pipe) != USB_SPEED_HIGH &&
+ usb_pipeendpoint(pipe) == 0) ? 1 : 0;
+ endpt = (8 << 28) |
+ (c << 27) |
+ (usb_maxpacket(dev, pipe) << 16) |
+ (0 << 15) |
+ (1 << 14) |
+ (usb_pipespeed(pipe) << 12) |
+ (usb_pipeendpoint(pipe) << 8) |
+ (0 << 7) | (usb_pipedevice(pipe) << 0);
+ qh->qh_endpt1 = cpu_to_le32(endpt);
+ endpt = (1 << 30) |
+ (dev->portnr << 23) |
+ (dev->parent->devnum << 16) | (0 << 8) | (0 << 0);
+ qh->qh_endpt2 = cpu_to_le32(endpt);
+ qh->qh_overlay.qt_next = cpu_to_le32(QT_NEXT_TERMINATE);
+ qh->qh_overlay.qt_altnext = cpu_to_le32(QT_NEXT_TERMINATE);
+
+ td = NULL;
+ tdp = &qh->qh_overlay.qt_next;
+
+ toggle =
+ usb_gettoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe));
+
+ if (req != NULL) {
+ td = ehci_alloc(sizeof(struct qTD), 32);
+ if (td == NULL) {
+ debug("unable to allocate SETUP td");
+ goto fail;
+ }
+ td->qt_next = cpu_to_le32(QT_NEXT_TERMINATE);
+ td->qt_altnext = cpu_to_le32(QT_NEXT_TERMINATE);
+ token = (0 << 31) |
+ (sizeof(*req) << 16) |
+ (0 << 15) | (0 << 12) | (3 << 10) | (2 << 8) | (0x80 << 0);
+ td->qt_token = cpu_to_le32(token);
+ if (ehci_td_buffer(td, req, sizeof(*req)) != 0) {
+ debug("unable construct SETUP td");
+ ehci_free(td, sizeof(*td));
+ goto fail;
+ }
+ *tdp = cpu_to_le32((uint32_t) td);
+ tdp = &td->qt_next;
+ toggle = 1;
+ }
+
+ if (length > 0 || req == NULL) {
+ td = ehci_alloc(sizeof(struct qTD), 32);
+ if (td == NULL) {
+ debug("unable to allocate DATA td");
+ goto fail;
+ }
+ td->qt_next = cpu_to_le32(QT_NEXT_TERMINATE);
+ td->qt_altnext = cpu_to_le32(QT_NEXT_TERMINATE);
+ token = (toggle << 31) |
+ (length << 16) |
+ ((req == NULL ? 1 : 0) << 15) |
+ (0 << 12) |
+ (3 << 10) |
+ ((usb_pipein(pipe) ? 1 : 0) << 8) | (0x80 << 0);
+ td->qt_token = cpu_to_le32(token);
+ if (ehci_td_buffer(td, buffer, length) != 0) {
+ debug("unable construct DATA td");
+ ehci_free(td, sizeof(*td));
+ goto fail;
+ }
+ *tdp = cpu_to_le32((uint32_t) td);
+ tdp = &td->qt_next;
+ }
+
+ if (req != NULL) {
+ td = ehci_alloc(sizeof(struct qTD), 32);
+ if (td == NULL) {
+ debug("unable to allocate ACK td");
+ goto fail;
+ }
+ td->qt_next = cpu_to_le32(QT_NEXT_TERMINATE);
+ td->qt_altnext = cpu_to_le32(QT_NEXT_TERMINATE);
+ token = (toggle << 31) |
+ (0 << 16) |
+ (1 << 15) |
+ (0 << 12) |
+ (3 << 10) |
+ ((usb_pipein(pipe) ? 0 : 1) << 8) | (0x80 << 0);
+ td->qt_token = cpu_to_le32(token);
+ *tdp = cpu_to_le32((uint32_t) td);
+ tdp = &td->qt_next;
+ }
+
+ qh_list.qh_link = cpu_to_le32((uint32_t) qh | QH_LINK_TYPE_QH);
+
+ usbsts = le32_to_cpu(hcor->or_usbsts);
+ hcor->or_usbsts = cpu_to_le32(usbsts & 0x3f);
+
+ /* Enable async. schedule. */
+ hcor->or_usbcmd |= cpu_to_le32(0x20);
+ while ((hcor->or_usbsts & cpu_to_le32(0x8000)) == 0)
+ udelay(1);
+
+ /* Wait for TDs to be processed. */
+ ts = get_timer(0);
+ vtd = td;
+ do {
+ token = le32_to_cpu(vtd->qt_token);
+ if (!(token & 0x80))
+ break;
+ } while (get_timer(ts) < CONFIG_SYS_HZ);
+
+ /* Disable async schedule. */
+ hcor->or_usbcmd &= ~cpu_to_le32(0x20);
+ while ((hcor->or_usbsts & cpu_to_le32(0x8000)) != 0)
+ udelay(1);
+
+ qh_list.qh_link = cpu_to_le32((uint32_t)&qh_list | QH_LINK_TYPE_QH);
+
+ token = le32_to_cpu(qh->qh_overlay.qt_token);
+ if (!(token & 0x80)) {
+ debug("TOKEN=%#x", token);
+ switch (token & 0xfc) {
+ case 0:
+ toggle = token >> 31;
+ usb_settoggle(dev, usb_pipeendpoint(pipe),
+ usb_pipeout(pipe), toggle);
+ dev->status = 0;
+ break;
+ case 0x40:
+ dev->status = USB_ST_STALLED;
+ break;
+ case 0xa0:
+ case 0x20:
+ dev->status = USB_ST_BUF_ERR;
+ break;
+ case 0x50:
+ case 0x10:
+ dev->status = USB_ST_BABBLE_DET;
+ break;
+ default:
+ dev->status = USB_ST_CRC_ERR;
+ break;
+ }
+ dev->act_len = length - ((token >> 16) & 0x7fff);
+ } else {
+ dev->act_len = 0;
+ debug("dev=%u, usbsts=%#x, p[1]=%#x, p[2]=%#x",
+ dev->devnum, le32_to_cpu(hcor->or_usbsts),
+ le32_to_cpu(hcor->or_portsc[0]),
+ le32_to_cpu(hcor->or_portsc[1]));
+ }
+
+ return (dev->status != USB_ST_NOT_PROC) ? 0 : -1;
+
+fail:
+ td = (void *)le32_to_cpu(qh->qh_overlay.qt_next);
+ while (td != (void *)QT_NEXT_TERMINATE) {
+ qh->qh_overlay.qt_next = td->qt_next;
+ ehci_free(td, sizeof(*td));
+ td = (void *)le32_to_cpu(qh->qh_overlay.qt_next);
+ }
+ ehci_free(qh, sizeof(*qh));
+ return -1;
+}
+
+static inline int min3(int a, int b, int c)
+{
+
+ if (b < a)
+ a = b;
+ if (c < a)
+ a = c;
+ return a;
+}
+
+ehci_submit_root(struct usb_device *dev, unsigned long pipe, void *buffer,
+ int length, struct devrequest *req)
+{
+ uint8_t tmpbuf[4];
+ u16 typeReq;
+ void *srcptr;
+ int len, srclen;
+ uint32_t reg;
+
+ srclen = 0;
+ srcptr = NULL;
+
+ debug("req=%u (%#x), type=%u (%#x), value=%u, index=%u",
+ req->request, req->request,
+ req->requesttype, req->requesttype,
+ le16_to_cpu(req->value), le16_to_cpu(req->index));
+
+ typeReq = req->request << 8 | req->requesttype;
+
+ switch (typeReq) {
+ case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
+ switch (le16_to_cpu(req->value) >> 8) {
+ case USB_DT_DEVICE:
+ srcptr = &device;
+ srclen = sizeof(struct usb_device_descriptor);
+ break;
+ case USB_DT_CONFIG:
+ srcptr = &config;
+ srclen = sizeof(config) +
+ sizeof(struct usb_interface_descriptor) +
+ sizeof(struct usb_hub_descriptor);
+ break;
+ case USB_DT_STRING:
+ switch (le16_to_cpu(req->value) & 0xff) {
+ case 0: /* Language */
+ srcptr = "\4\3\1\0";
+ srclen = 4;
+ break;
+ case 1: /* Vendor */
+ srcptr = "\16\3u\0-\0b\0o\0o\0t\0";
+ srclen = 14;
+ break;
+ case 2: /* Product */
+ srcptr = "\52\3E\0H\0C\0I\0 "
+ "\0H\0o\0s\0t\0 "
+ "\0C\0o\0n\0t\0r\0o\0l\0l\0e\0r\0";
+ srclen = 42;
+ break;
+ default:
+ goto unknown;
+ }
+ break;
+ default:
+ debug("unknown value %x", le16_to_cpu(req->value));
+ goto unknown;
+ }
+ break;
+ case USB_REQ_GET_DESCRIPTOR | ((USB_DIR_IN | USB_RT_HUB) << 8):
+ switch (le16_to_cpu(req->value) >> 8) {
+ case USB_DT_HUB:
+ srcptr = &hub;
+ srclen = sizeof(hub);
+ break;
+ default:
+ debug("unknown value %x", le16_to_cpu(req->value));
+ goto unknown;
+ }
+ break;
+ case USB_REQ_SET_ADDRESS | (USB_RECIP_DEVICE << 8):
+ rootdev = le16_to_cpu(req->value);
+ break;
+ case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
+ /* Nothing to do */
+ break;
+ case USB_REQ_GET_STATUS | ((USB_DIR_IN | USB_RT_HUB) << 8):
+ tmpbuf[0] = 1; /* USB_STATUS_SELFPOWERED */
+ tmpbuf[1] = 0;
+ srcptr = tmpbuf;
+ srclen = 2;
+ break;
+ case DeviceRequest | USB_REQ_GET_STATUS:
+ memset(tmpbuf, 0, 4);
+ reg = le32_to_cpu(hcor->or_portsc[le16_to_cpu(req->index)
+ - 1]);
+ if (reg & EHCI_PS_CS)
+ tmpbuf[0] |= USB_PORT_STAT_CONNECTION;
+ if (reg & EHCI_PS_PE)
+ tmpbuf[0] |= USB_PORT_STAT_ENABLE;
+ if (reg & EHCI_PS_SUSP)
+ tmpbuf[0] |= USB_PORT_STAT_SUSPEND;
+ if (reg & EHCI_PS_OCA)
+ tmpbuf[0] |= USB_PORT_STAT_OVERCURRENT;
+ if (reg & EHCI_PS_PR)
+ tmpbuf[0] |= USB_PORT_STAT_RESET;
+ if (reg & EHCI_PS_PP)
+ tmpbuf[1] |= USB_PORT_STAT_POWER >> 8;
+ tmpbuf[1] |= USB_PORT_STAT_HIGH_SPEED >> 8;
+
+ if (reg & EHCI_PS_CSC)
+ tmpbuf[2] |= USB_PORT_STAT_C_CONNECTION;
+ if (reg & EHCI_PS_PEC)
+ tmpbuf[2] |= USB_PORT_STAT_C_ENABLE;
+ if (reg & EHCI_PS_OCC)
+ tmpbuf[2] |= USB_PORT_STAT_C_OVERCURRENT;
+ if (portreset & (1 << le16_to_cpu(req->index)))
+ tmpbuf[2] |= USB_PORT_STAT_C_RESET;
+ srcptr = tmpbuf;
+ srclen = 4;
+ break;
+ case DeviceOutRequest | USB_REQ_SET_FEATURE:
+ reg = le32_to_cpu(hcor->or_portsc[le16_to_cpu(req->index) - 1]);
+ reg &= ~EHCI_PS_CLEAR;
+ switch (le16_to_cpu(req->value)) {
+ case USB_PORT_FEAT_POWER:
+ reg |= EHCI_PS_PP;
+ break;
+ case USB_PORT_FEAT_RESET:
+ if (EHCI_PS_IS_LOWSPEED(reg)) {
+ /* Low speed device, give up ownership. */
+ reg |= EHCI_PS_PO;
+ break;
+ }
+ /* Start reset sequence. */
+ reg &= ~EHCI_PS_PE;
+ reg |= EHCI_PS_PR;
+ hcor->or_portsc[le16_to_cpu(req->index) - 1] =
+ cpu_to_le32(reg);
+ /* Wait for reset to complete. */
+ udelay(500000);
+ /* Terminate reset sequence. */
+ reg &= ~EHCI_PS_PR;
+ /* TODO: is it only fsl chip that requires this
+ * manual setting of port enable?
+ */
+ reg |= EHCI_PS_PE;
+ hcor->or_portsc[le16_to_cpu(req->index) - 1] =
+ cpu_to_le32(reg);
+ /* Wait for HC to complete reset. */
+ udelay(2000);
+ reg =
+ le32_to_cpu(hcor->or_portsc[le16_to_cpu(req->index)
+ - 1]);
+ reg &= ~EHCI_PS_CLEAR;
+ if ((reg & EHCI_PS_PE) == 0) {
+ /* Not a high speed device, give up
+ * ownership. */
+ reg |= EHCI_PS_PO;
+ break;
+ }
+ portreset |= 1 << le16_to_cpu(req->index);
+ break;
+ default:
+ debug("unknown feature %x", le16_to_cpu(req->value));
+ goto unknown;
+ }
+ hcor->or_portsc[le16_to_cpu(req->index) - 1] =
+ cpu_to_le32(reg);
+ break;
+ case DeviceOutRequest | USB_REQ_CLEAR_FEATURE:
+ reg = le32_to_cpu(hcor->or_portsc[le16_to_cpu(req->index) - 1]);
+ reg &= ~EHCI_PS_CLEAR;
+ switch (le16_to_cpu(req->value)) {
+ case USB_PORT_FEAT_ENABLE:
+ reg &= ~EHCI_PS_PE;
+ break;
+ case USB_PORT_FEAT_C_CONNECTION:
+ reg |= EHCI_PS_CSC;
+ break;
+ case USB_PORT_FEAT_C_RESET:
+ portreset &= ~(1 << le16_to_cpu(req->index));
+ break;
+ default:
+ debug("unknown feature %x", le16_to_cpu(req->value));
+ goto unknown;
+ }
+ hcor->or_portsc[le16_to_cpu(req->index) - 1] =
+ cpu_to_le32(reg);
+ break;
+ default:
+ debug("Unknown request");
+ goto unknown;
+ }
+
+ len = min3(srclen, le16_to_cpu(req->length), length);
+ if (srcptr != NULL && len > 0)
+ memcpy(buffer, srcptr, len);
+ dev->act_len = len;
+ dev->status = 0;
+ return 0;
+
+unknown:
+ debug("requesttype=%x, request=%x, value=%x, index=%x, length=%x",
+ req->requesttype, req->request, le16_to_cpu(req->value),
+ le16_to_cpu(req->index), le16_to_cpu(req->length));
+
+ dev->act_len = 0;
+ dev->status = USB_ST_STALLED;
+ return -1;
+}
+
+int usb_lowlevel_stop(void)
+{
+ return ehci_hcd_stop();
+}
+
+int usb_lowlevel_init(void)
+{
+ uint32_t reg;
+
+ if (ehci_hcd_init() != 0)
+ return -1;
+
+ /* Set head of reclaim list */
+ memset(&qh_list, 0, sizeof(qh_list));
+ qh_list.qh_link = cpu_to_le32((uint32_t)&qh_list | QH_LINK_TYPE_QH);
+ qh_list.qh_endpt1 = cpu_to_le32((1 << 15) | (USB_SPEED_HIGH << 12));
+ qh_list.qh_curtd = cpu_to_le32(QT_NEXT_TERMINATE);
+ qh_list.qh_overlay.qt_next = cpu_to_le32(QT_NEXT_TERMINATE);
+ qh_list.qh_overlay.qt_altnext = cpu_to_le32(QT_NEXT_TERMINATE);
+ qh_list.qh_overlay.qt_token = cpu_to_le32(0x40);
+
+ /* Set async. queue head pointer. */
+ hcor->or_asynclistaddr = cpu_to_le32((uint32_t)&qh_list);
+
+ reg = le32_to_cpu(hccr->cr_hcsparams);
+ hub.bNbrPorts = reg & 0xf;
+ if (reg & 0x10000) /* Port Indicators */
+ hub.wHubCharacteristics |= 0x80;
+ if (reg & 0x10) /* Port Power Control */
+ hub.wHubCharacteristics |= 0x01;
+
+ /* take control over the ports */
+ hcor->or_configflag |= cpu_to_le32(1);
+
+ /* Start the host controller. */
+ hcor->or_usbcmd |= cpu_to_le32(1);
+
+ rootdev = 0;
+
+ return 0;
+}
+
+int
+submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
+ int length)
+{
+
+ if (usb_pipetype(pipe) != PIPE_BULK) {
+ debug("non-bulk pipe (type=%lu)", usb_pipetype(pipe));
+ return -1;
+ }
+ return ehci_submit_async(dev, pipe, buffer, length, NULL);
+}
+
+int
+submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
+ int length, struct devrequest *setup)
+{
+
+ if (usb_pipetype(pipe) != PIPE_CONTROL) {
+ debug("non-control pipe (type=%lu)", usb_pipetype(pipe));
+ return -1;
+ }
+
+ if (usb_pipedevice(pipe) == rootdev) {
+ if (rootdev == 0)
+ dev->speed = USB_SPEED_HIGH;
+ return ehci_submit_root(dev, pipe, buffer, length, setup);
+ }
+ return ehci_submit_async(dev, pipe, buffer, length, setup);
+}
+
+int
+submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
+ int length, int interval)
+{
+
+ debug("dev=%p, pipe=%lu, buffer=%p, length=%d, interval=%d",
+ dev, pipe, buffer, length, interval);
+ return -1;
+}
diff --git a/drivers/usb/usb_ehci_core.h b/drivers/usb/usb_ehci_core.h
new file mode 100644
index 0000000..39e5c5e
--- /dev/null
+++ b/drivers/usb/usb_ehci_core.h
@@ -0,0 +1,29 @@
+/*-
+ * Copyright (c) 2007-2008, Juniper Networks, Inc.
+ * Copyright (c) 2008, Excito Elektronik i Skåne AB
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2 of
+ * the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef USB_EHCI_CORE_H
+#define USB_EHCI_CORE_H
+
+extern int rootdev;
+extern struct ehci_hccr *hccr;
+extern volatile struct ehci_hcor *hcor;
+
+#endif
--
1.5.6.5
More information about the U-Boot
mailing list