diff options
author | Michael Trimarchi <trimarchi@gandalf.sssup.it> | 2008-11-28 13:20:46 +0100 |
---|---|---|
committer | Remy Bohmer <linux@bohmer.net> | 2009-01-28 19:57:27 +0100 |
commit | aaf098cfeed04595d4c5100ffd39095d79edbf90 (patch) | |
tree | 762bf81cf209ab046b5c6d691c4c3bc2b14df60c | |
parent | 3e126484df7868e341545cce740b24b62b0cd3b7 (diff) | |
download | u-boot-imx-aaf098cfeed04595d4c5100ffd39095d79edbf90.zip u-boot-imx-aaf098cfeed04595d4c5100ffd39095d79edbf90.tar.gz u-boot-imx-aaf098cfeed04595d4c5100ffd39095d79edbf90.tar.bz2 |
USB ehci core support
Add USB ehci core support
Signed-off-by: Michael Trimarchi <trimarchi@gandalf.sssup.it>
Signed-off-by: Remy Böhmer <linux@bohmer.net>
-rw-r--r-- | drivers/usb/Makefile | 1 | ||||
-rw-r--r-- | drivers/usb/usb_ehci.h | 121 | ||||
-rw-r--r-- | drivers/usb/usb_ehci_core.c | 634 | ||||
-rw-r--r-- | drivers/usb/usb_ehci_core.h | 29 |
4 files changed, 785 insertions, 0 deletions
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..765b5dd --- /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 Sk�ne 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..88e91b9 --- /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 Sk�ne 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 |