X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=common%2Fusb.c;h=fbaf8ecbe232ce63170228727df1ed7fa23b060f;hb=79c884d7e449a63fa8f07b7495f8f9873355c48f;hp=87fca70706519353561722fdb91a4eee8701085f;hpb=ee924e00300bd1136589b2d5f8ad1f008df01bd4;p=u-boot diff --git a/common/usb.c b/common/usb.c index 87fca70706..fbaf8ecbe2 100644 --- a/common/usb.c +++ b/common/usb.c @@ -1,5 +1,4 @@ /* - * * Most of this source has been derived from the Linux USB * project: * (C) Copyright Linus Torvalds 1999 @@ -15,24 +14,7 @@ * Adapted for U-Boot: * (C) Copyright 2001 Denis Peter, MPL AG Switzerland * - * See file CREDITS for list of people who contributed to this - * project. - * - * 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; either version 2 of - * the License, or (at your option) any later version. - * - * 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 - * + * SPDX-License-Identifier: GPL-2.0+ */ /* @@ -46,81 +28,103 @@ */ #include #include +#include #include +#include #include #include - +#include +#include #include #ifdef CONFIG_4xx #include #endif -#undef USB_DEBUG - -#ifdef USB_DEBUG -#define USB_PRINTF(fmt, args...) printf(fmt , ##args) -#else -#define USB_PRINTF(fmt, args...) -#endif - #define USB_BUFSIZ 512 -static struct usb_device usb_dev[USB_MAX_DEVICE]; -static int dev_index; -static int running; static int asynch_allowed; -static struct devrequest setup_packet; - char usb_started; /* flag for the started/stopped USB status */ -/********************************************************************** - * some forward declerations... - */ -void usb_scan_devices(void); - -int usb_hub_probe(struct usb_device *dev, int ifnum); -void usb_hub_reset(void); -static int hub_port_reset(struct usb_device *dev, int port, - unsigned short *portstat); - -/*********************************************************************** - * wait_ms - */ +#ifndef CONFIG_DM_USB +static struct usb_device usb_dev[USB_MAX_DEVICE]; +static int dev_index; -inline void wait_ms(unsigned long ms) -{ - while (ms-- > 0) - udelay(1000); -} +#ifndef CONFIG_USB_MAX_CONTROLLER_COUNT +#define CONFIG_USB_MAX_CONTROLLER_COUNT 1 +#endif /*************************************************************************** * Init USB Device */ - int usb_init(void) { - int result; + void *ctrl; + struct usb_device *dev; + int i, start_index = 0; + int controllers_initialized = 0; + int ret; - running = 0; dev_index = 0; asynch_allowed = 1; usb_hub_reset(); + + /* first make all devices unknown */ + for (i = 0; i < USB_MAX_DEVICE; i++) { + memset(&usb_dev[i], 0, sizeof(struct usb_device)); + usb_dev[i].devnum = -1; + } + /* init low_level USB */ - printf("USB: "); - result = usb_lowlevel_init(); - /* if lowlevel init is OK, scan the bus for devices - * i.e. search HUBs and configure them */ - if (result == 0) { - printf("scanning bus for devices... "); - running = 1; - usb_scan_devices(); + for (i = 0; i < CONFIG_USB_MAX_CONTROLLER_COUNT; i++) { + /* init low_level USB */ + printf("USB%d: ", i); + ret = usb_lowlevel_init(i, USB_INIT_HOST, &ctrl); + if (ret == -ENODEV) { /* No such device. */ + puts("Port not available.\n"); + controllers_initialized++; + continue; + } + + if (ret) { /* Other error. */ + puts("lowlevel init failed\n"); + continue; + } + /* + * lowlevel init is OK, now scan the bus for devices + * i.e. search HUBs and configure them + */ + controllers_initialized++; + start_index = dev_index; + printf("scanning bus %d for devices... ", i); + ret = usb_alloc_new_device(ctrl, &dev); + if (ret) + break; + + /* + * device 0 is always present + * (root hub, so let it analyze) + */ + ret = usb_new_device(dev); + if (ret) + usb_free_device(dev->controller); + + if (start_index == dev_index) { + puts("No USB Device found\n"); + continue; + } else { + printf("%d USB Device(s) found\n", + dev_index - start_index); + } + usb_started = 1; - return 0; - } else { - printf("Error, couldn't init Lowlevel part\n"); - usb_started = 0; - return -1; } + + debug("scan end\n"); + /* if we were not able to find at least one working bus, bail out */ + if (controllers_initialized == 0) + puts("USB error: all controllers failed lowlevel init\n"); + + return usb_started ? 0 : -ENODEV; } /****************************************************************************** @@ -128,25 +132,61 @@ int usb_init(void) */ int usb_stop(void) { - int res = 0; + int i; if (usb_started) { asynch_allowed = 1; usb_started = 0; usb_hub_reset(); - res = usb_lowlevel_stop(); + + for (i = 0; i < CONFIG_USB_MAX_CONTROLLER_COUNT; i++) { + if (usb_lowlevel_stop(i)) + printf("failed to stop USB controller %d\n", i); + } } - return res; + + return 0; +} + +/****************************************************************************** + * Detect if a USB device has been plugged or unplugged. + */ +int usb_detect_change(void) +{ + int i, j; + int change = 0; + + for (j = 0; j < USB_MAX_DEVICE; j++) { + for (i = 0; i < usb_dev[j].maxchild; i++) { + struct usb_port_status status; + + if (usb_get_port_status(&usb_dev[j], i + 1, + &status) < 0) + /* USB request failed */ + continue; + + if (le16_to_cpu(status.wPortChange) & + USB_PORT_STAT_C_CONNECTION) + change++; + } + } + + return change; } /* * disables the asynch behaviour of the control message. This is used for data * transfers that uses the exclusiv access to the control and bulk messages. + * Returns the old value so it can be restored later. */ -void usb_disable_asynch(int disable) +int usb_disable_asynch(int disable) { + int old_value = asynch_allowed; + asynch_allowed = !disable; + return old_value; } +#endif /* !CONFIG_DM_USB */ /*------------------------------------------------------------------- @@ -177,60 +217,71 @@ int usb_control_msg(struct usb_device *dev, unsigned int pipe, unsigned short value, unsigned short index, void *data, unsigned short size, int timeout) { + ALLOC_CACHE_ALIGN_BUFFER(struct devrequest, setup_packet, 1); + int err; + if ((timeout == 0) && (!asynch_allowed)) { /* request for a asynch control pipe is not allowed */ - return -1; + return -EINVAL; } /* set setup command */ - setup_packet.requesttype = requesttype; - setup_packet.request = request; - setup_packet.value = cpu_to_le16(value); - setup_packet.index = cpu_to_le16(index); - setup_packet.length = cpu_to_le16(size); - USB_PRINTF("usb_control_msg: request: 0x%X, requesttype: 0x%X, " \ - "value 0x%X index 0x%X length 0x%X\n", - request, requesttype, value, index, size); + setup_packet->requesttype = requesttype; + setup_packet->request = request; + setup_packet->value = cpu_to_le16(value); + setup_packet->index = cpu_to_le16(index); + setup_packet->length = cpu_to_le16(size); + debug("usb_control_msg: request: 0x%X, requesttype: 0x%X, " \ + "value 0x%X index 0x%X length 0x%X\n", + request, requesttype, value, index, size); dev->status = USB_ST_NOT_PROC; /*not yet processed */ - submit_control_msg(dev, pipe, data, size, &setup_packet); + err = submit_control_msg(dev, pipe, data, size, setup_packet); + if (err < 0) + return err; if (timeout == 0) return (int)size; - if (dev->status != 0) { - /* - * Let's wait a while for the timeout to elapse. - * It has no real use, but it keeps the interface happy. - */ - wait_ms(timeout); - return -1; + /* + * Wait for status to update until timeout expires, USB driver + * interrupt handler may set the status when the USB operation has + * been completed. + */ + while (timeout--) { + if (!((volatile unsigned long)dev->status & USB_ST_NOT_PROC)) + break; + mdelay(1); } + if (dev->status) + return -1; return dev->act_len; + } /*------------------------------------------------------------------- * submits bulk message, and waits for completion. returns 0 if Ok or - * -1 if Error. + * negative if Error. * synchronous behavior */ int usb_bulk_msg(struct usb_device *dev, unsigned int pipe, void *data, int len, int *actual_length, int timeout) { if (len < 0) - return -1; + return -EINVAL; dev->status = USB_ST_NOT_PROC; /*not yet processed */ - submit_bulk_msg(dev, pipe, data, len); + if (submit_bulk_msg(dev, pipe, data, len) < 0) + return -EIO; while (timeout--) { if (!((volatile unsigned long)dev->status & USB_ST_NOT_PROC)) break; - wait_ms(1); + mdelay(1); } *actual_length = dev->act_len; if (dev->status == 0) return 0; else - return -1; + return -EIO; } @@ -251,42 +302,50 @@ int usb_maxpacket(struct usb_device *dev, unsigned long pipe) return dev->epmaxpacketin[((pipe>>15) & 0xf)]; } -/* The routine usb_set_maxpacket_ep() is extracted from the loop of routine +/* + * The routine usb_set_maxpacket_ep() is extracted from the loop of routine * usb_set_maxpacket(), because the optimizer of GCC 4.x chokes on this routine * when it is inlined in 1 single routine. What happens is that the register r3 * is used as loop-count 'i', but gets overwritten later on. * This is clearly a compiler bug, but it is easier to workaround it here than * to update the compiler (Occurs with at least several GCC 4.{1,2},x * CodeSourcery compilers like e.g. 2007q3, 2008q1, 2008q3 lite editions on ARM) + * + * NOTE: Similar behaviour was observed with GCC4.6 on ARMv5. */ -static void __attribute__((noinline)) -usb_set_maxpacket_ep(struct usb_device *dev, struct usb_endpoint_descriptor *ep) +static void noinline +usb_set_maxpacket_ep(struct usb_device *dev, int if_idx, int ep_idx) { int b; + struct usb_endpoint_descriptor *ep; + u16 ep_wMaxPacketSize; + + ep = &dev->config.if_desc[if_idx].ep_desc[ep_idx]; b = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; + ep_wMaxPacketSize = get_unaligned(&ep->wMaxPacketSize); if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_CONTROL) { /* Control => bidirectional */ - dev->epmaxpacketout[b] = ep->wMaxPacketSize; - dev->epmaxpacketin[b] = ep->wMaxPacketSize; - USB_PRINTF("##Control EP epmaxpacketout/in[%d] = %d\n", - b, dev->epmaxpacketin[b]); + dev->epmaxpacketout[b] = ep_wMaxPacketSize; + dev->epmaxpacketin[b] = ep_wMaxPacketSize; + debug("##Control EP epmaxpacketout/in[%d] = %d\n", + b, dev->epmaxpacketin[b]); } else { if ((ep->bEndpointAddress & 0x80) == 0) { /* OUT Endpoint */ - if (ep->wMaxPacketSize > dev->epmaxpacketout[b]) { - dev->epmaxpacketout[b] = ep->wMaxPacketSize; - USB_PRINTF("##EP epmaxpacketout[%d] = %d\n", - b, dev->epmaxpacketout[b]); + if (ep_wMaxPacketSize > dev->epmaxpacketout[b]) { + dev->epmaxpacketout[b] = ep_wMaxPacketSize; + debug("##EP epmaxpacketout[%d] = %d\n", + b, dev->epmaxpacketout[b]); } } else { /* IN Endpoint */ - if (ep->wMaxPacketSize > dev->epmaxpacketin[b]) { - dev->epmaxpacketin[b] = ep->wMaxPacketSize; - USB_PRINTF("##EP epmaxpacketin[%d] = %d\n", - b, dev->epmaxpacketin[b]); + if (ep_wMaxPacketSize > dev->epmaxpacketin[b]) { + dev->epmaxpacketin[b] = ep_wMaxPacketSize; + debug("##EP epmaxpacketin[%d] = %d\n", + b, dev->epmaxpacketin[b]); } } /* if out */ } /* if control */ @@ -295,14 +354,13 @@ usb_set_maxpacket_ep(struct usb_device *dev, struct usb_endpoint_descriptor *ep) /* * set the max packed value of all endpoints in the given configuration */ -int usb_set_maxpacket(struct usb_device *dev) +static int usb_set_maxpacket(struct usb_device *dev) { int i, ii; - for (i = 0; i < dev->config.bNumInterfaces; i++) - for (ii = 0; ii < dev->config.if_desc[i].bNumEndpoints; ii++) - usb_set_maxpacket_ep(dev, - &dev->config.if_desc[i].ep_desc[ii]); + for (i = 0; i < dev->config.desc.bNumInterfaces; i++) + for (ii = 0; ii < dev->config.if_desc[i].desc.bNumEndpoints; ii++) + usb_set_maxpacket_ep(dev, i, ii); return 0; } @@ -310,13 +368,15 @@ int usb_set_maxpacket(struct usb_device *dev) /******************************************************************************* * Parse the config, located in buffer, and fills the dev->config structure. * Note that all little/big endian swapping are done automatically. + * (wTotalLength has already been swapped and sanitized when it was read.) */ -int usb_parse_config(struct usb_device *dev, unsigned char *buffer, int cfgno) +static int usb_parse_config(struct usb_device *dev, + unsigned char *buffer, int cfgno) { struct usb_descriptor_header *head; int index, ifno, epno, curr_if_num; - int i; - unsigned char *ch; + u16 ep_wMaxPacketSize; + struct usb_interface *if_desc = NULL; ifno = -1; epno = -1; @@ -327,64 +387,136 @@ int usb_parse_config(struct usb_device *dev, unsigned char *buffer, int cfgno) if (head->bDescriptorType != USB_DT_CONFIG) { printf(" ERROR: NOT USB_CONFIG_DESC %x\n", head->bDescriptorType); - return -1; + return -EINVAL; + } + if (head->bLength != USB_DT_CONFIG_SIZE) { + printf("ERROR: Invalid USB CFG length (%d)\n", head->bLength); + return -EINVAL; } - memcpy(&dev->config, buffer, buffer[0]); - le16_to_cpus(&(dev->config.wTotalLength)); + memcpy(&dev->config, head, USB_DT_CONFIG_SIZE); dev->config.no_of_if = 0; - index = dev->config.bLength; + index = dev->config.desc.bLength; /* Ok the first entry must be a configuration entry, * now process the others */ head = (struct usb_descriptor_header *) &buffer[index]; - while (index + 1 < dev->config.wTotalLength) { + while (index + 1 < dev->config.desc.wTotalLength && head->bLength) { switch (head->bDescriptorType) { case USB_DT_INTERFACE: + if (head->bLength != USB_DT_INTERFACE_SIZE) { + printf("ERROR: Invalid USB IF length (%d)\n", + head->bLength); + break; + } + if (index + USB_DT_INTERFACE_SIZE > + dev->config.desc.wTotalLength) { + puts("USB IF descriptor overflowed buffer!\n"); + break; + } if (((struct usb_interface_descriptor *) \ - &buffer[index])->bInterfaceNumber != curr_if_num) { + head)->bInterfaceNumber != curr_if_num) { /* this is a new interface, copy new desc */ ifno = dev->config.no_of_if; + if (ifno >= USB_MAXINTERFACES) { + puts("Too many USB interfaces!\n"); + /* try to go on with what we have */ + return -EINVAL; + } + if_desc = &dev->config.if_desc[ifno]; dev->config.no_of_if++; - memcpy(&dev->config.if_desc[ifno], - &buffer[index], buffer[index]); - dev->config.if_desc[ifno].no_of_ep = 0; - dev->config.if_desc[ifno].num_altsetting = 1; + memcpy(if_desc, head, + USB_DT_INTERFACE_SIZE); + if_desc->no_of_ep = 0; + if_desc->num_altsetting = 1; curr_if_num = - dev->config.if_desc[ifno].bInterfaceNumber; + if_desc->desc.bInterfaceNumber; } else { /* found alternate setting for the interface */ - dev->config.if_desc[ifno].num_altsetting++; + if (ifno >= 0) { + if_desc = &dev->config.if_desc[ifno]; + if_desc->num_altsetting++; + } } break; case USB_DT_ENDPOINT: + if (head->bLength != USB_DT_ENDPOINT_SIZE) { + printf("ERROR: Invalid USB EP length (%d)\n", + head->bLength); + break; + } + if (index + USB_DT_ENDPOINT_SIZE > + dev->config.desc.wTotalLength) { + puts("USB EP descriptor overflowed buffer!\n"); + break; + } + if (ifno < 0) { + puts("Endpoint descriptor out of order!\n"); + break; + } epno = dev->config.if_desc[ifno].no_of_ep; + if_desc = &dev->config.if_desc[ifno]; + if (epno > USB_MAXENDPOINTS) { + printf("Interface %d has too many endpoints!\n", + if_desc->desc.bInterfaceNumber); + return -EINVAL; + } /* found an endpoint */ - dev->config.if_desc[ifno].no_of_ep++; - memcpy(&dev->config.if_desc[ifno].ep_desc[epno], - &buffer[index], buffer[index]); - le16_to_cpus(&(dev->config.if_desc[ifno].ep_desc[epno].\ - wMaxPacketSize)); - USB_PRINTF("if %d, ep %d\n", ifno, epno); + if_desc->no_of_ep++; + memcpy(&if_desc->ep_desc[epno], head, + USB_DT_ENDPOINT_SIZE); + ep_wMaxPacketSize = get_unaligned(&dev->config.\ + if_desc[ifno].\ + ep_desc[epno].\ + wMaxPacketSize); + put_unaligned(le16_to_cpu(ep_wMaxPacketSize), + &dev->config.\ + if_desc[ifno].\ + ep_desc[epno].\ + wMaxPacketSize); + debug("if %d, ep %d\n", ifno, epno); + break; + case USB_DT_SS_ENDPOINT_COMP: + if (head->bLength != USB_DT_SS_EP_COMP_SIZE) { + printf("ERROR: Invalid USB EPC length (%d)\n", + head->bLength); + break; + } + if (index + USB_DT_SS_EP_COMP_SIZE > + dev->config.desc.wTotalLength) { + puts("USB EPC descriptor overflowed buffer!\n"); + break; + } + if (ifno < 0 || epno < 0) { + puts("EPC descriptor out of order!\n"); + break; + } + if_desc = &dev->config.if_desc[ifno]; + memcpy(&if_desc->ss_ep_comp_desc[epno], head, + USB_DT_SS_EP_COMP_SIZE); break; default: if (head->bLength == 0) - return 1; + return -EINVAL; - USB_PRINTF("unknown Description Type : %x\n", - head->bDescriptorType); + debug("unknown Description Type : %x\n", + head->bDescriptorType); +#ifdef DEBUG { - ch = (unsigned char *)head; + unsigned char *ch = (unsigned char *)head; + int i; + for (i = 0; i < head->bLength; i++) - USB_PRINTF("%02X ", *ch++); - USB_PRINTF("\n\n\n"); + debug("%02X ", *ch++); + debug("\n\n\n"); } +#endif break; } index += head->bLength; head = (struct usb_descriptor_header *)&buffer[index]; } - return 1; + return 0; } /*********************************************************************** @@ -421,7 +553,7 @@ int usb_clear_halt(struct usb_device *dev, int pipe) /********************************************************************** * get_descriptor type */ -int usb_get_descriptor(struct usb_device *dev, unsigned char type, +static int usb_get_descriptor(struct usb_device *dev, unsigned char type, unsigned char index, void *buf, int size) { int res; @@ -439,10 +571,9 @@ int usb_get_configuration_no(struct usb_device *dev, unsigned char *buffer, int cfgno) { int result; - unsigned int tmp; + unsigned int length; struct usb_config_descriptor *config; - config = (struct usb_config_descriptor *)&buffer[0]; result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, 9); if (result < 9) { @@ -452,19 +583,20 @@ int usb_get_configuration_no(struct usb_device *dev, else printf("config descriptor too short " \ "(expected %i, got %i)\n", 9, result); - return -1; + return -EIO; } - tmp = le16_to_cpu(config->wTotalLength); + length = le16_to_cpu(config->wTotalLength); - if (tmp > USB_BUFSIZ) { - USB_PRINTF("usb_get_configuration_no: failed to get " \ - "descriptor - too long: %d\n", tmp); - return -1; + if (length > USB_BUFSIZ) { + printf("%s: failed to get descriptor - too long: %d\n", + __func__, length); + return -EIO; } - result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, tmp); - USB_PRINTF("get_conf_no %d Result %d, wLength %d\n", - cfgno, result, tmp); + result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, length); + debug("get_conf_no %d Result %d, wLength %d\n", cfgno, result, length); + config->wTotalLength = length; /* validated, with CPU byte order */ + return result; } @@ -472,11 +604,11 @@ int usb_get_configuration_no(struct usb_device *dev, * set address of a device to the value in dev->devnum. * This can only be done by addressing the device via the default address (0) */ -int usb_set_address(struct usb_device *dev) +static int usb_set_address(struct usb_device *dev) { int res; - USB_PRINTF("set address %d\n", dev->devnum); + debug("set address %d\n", dev->devnum); res = usb_control_msg(dev, usb_snddefctrl(dev), USB_REQ_SET_ADDRESS, 0, (dev->devnum), 0, @@ -489,18 +621,18 @@ int usb_set_address(struct usb_device *dev) */ int usb_set_interface(struct usb_device *dev, int interface, int alternate) { - struct usb_interface_descriptor *if_face = NULL; + struct usb_interface *if_face = NULL; int ret, i; - for (i = 0; i < dev->config.bNumInterfaces; i++) { - if (dev->config.if_desc[i].bInterfaceNumber == interface) { + for (i = 0; i < dev->config.desc.bNumInterfaces; i++) { + if (dev->config.if_desc[i].desc.bInterfaceNumber == interface) { if_face = &dev->config.if_desc[i]; break; } } if (!if_face) { printf("selecting invalid interface %d", interface); - return -1; + return -EINVAL; } /* * We should return now for devices with only one alternate setting. @@ -525,10 +657,10 @@ int usb_set_interface(struct usb_device *dev, int interface, int alternate) /******************************************************************** * set configuration number to configuration */ -int usb_set_configuration(struct usb_device *dev, int configuration) +static int usb_set_configuration(struct usb_device *dev, int configuration) { int res; - USB_PRINTF("set configuration %d\n", configuration); + debug("set configuration %d\n", configuration); /* set setup command */ res = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), USB_REQ_SET_CONFIGURATION, 0, @@ -539,7 +671,7 @@ int usb_set_configuration(struct usb_device *dev, int configuration) dev->toggle[1] = 0; return 0; } else - return -1; + return -EIO; } /******************************************************************** @@ -588,7 +720,7 @@ int usb_get_class_descriptor(struct usb_device *dev, int ifnum, /******************************************************************** * get string index in buffer */ -int usb_get_string(struct usb_device *dev, unsigned short langid, +static int usb_get_string(struct usb_device *dev, unsigned short langid, unsigned char index, void *buf, int size) { int i; @@ -653,7 +785,7 @@ static int usb_string_sub(struct usb_device *dev, unsigned int langid, } if (rc < 2) - rc = -1; + rc = -EINVAL; return rc; } @@ -666,13 +798,13 @@ static int usb_string_sub(struct usb_device *dev, unsigned int langid, */ int usb_string(struct usb_device *dev, int index, char *buf, size_t size) { - unsigned char mybuf[USB_BUFSIZ]; + ALLOC_CACHE_ALIGN_BUFFER(unsigned char, mybuf, USB_BUFSIZ); unsigned char *tbuf; int err; unsigned int u, idx; if (size <= 0 || !buf || !index) - return -1; + return -EINVAL; buf[0] = 0; tbuf = &mybuf[0]; @@ -680,19 +812,19 @@ int usb_string(struct usb_device *dev, int index, char *buf, size_t size) if (!dev->have_langid) { err = usb_string_sub(dev, 0, 0, tbuf); if (err < 0) { - USB_PRINTF("error getting string descriptor 0 " \ - "(error=%lx)\n", dev->status); - return -1; + debug("error getting string descriptor 0 " \ + "(error=%lx)\n", dev->status); + return -EIO; } else if (tbuf[0] < 4) { - USB_PRINTF("string descriptor 0 too short\n"); - return -1; + debug("string descriptor 0 too short\n"); + return -EIO; } else { dev->have_langid = -1; dev->string_langid = tbuf[2] | (tbuf[3] << 8); /* always use the first langid listed */ - USB_PRINTF("USB device number %d default " \ - "language ID 0x%x\n", - dev->devnum, dev->string_langid); + debug("USB device number %d default " \ + "language ID 0x%x\n", + dev->devnum, dev->string_langid); } } @@ -720,6 +852,7 @@ int usb_string(struct usb_device *dev, int index, char *buf, size_t size) * the USB device are static allocated [USB_MAX_DEVICE]. */ +#ifndef CONFIG_DM_USB /* returns a pointer to the device with the index [index]. * if the device is not assigned (dev->devnum==-1) returns NULL @@ -732,17 +865,13 @@ struct usb_device *usb_get_dev_index(int index) return &usb_dev[index]; } - -/* returns a pointer of a new device structure or NULL, if - * no device struct is available - */ -struct usb_device *usb_alloc_new_device(void) +int usb_alloc_new_device(struct udevice *controller, struct usb_device **devp) { int i; - USB_PRINTF("New Device %d\n", dev_index); + debug("New Device %d\n", dev_index); if (dev_index == USB_MAX_DEVICE) { printf("ERROR, too many USB Devices, max=%d\n", USB_MAX_DEVICE); - return NULL; + return -ENOSPC; } /* default Address is 0, real addresses start with 1 */ usb_dev[dev_index].devnum = dev_index + 1; @@ -750,101 +879,132 @@ struct usb_device *usb_alloc_new_device(void) for (i = 0; i < USB_MAXCHILDREN; i++) usb_dev[dev_index].children[i] = NULL; usb_dev[dev_index].parent = NULL; + usb_dev[dev_index].controller = controller; dev_index++; - return &usb_dev[dev_index - 1]; + *devp = &usb_dev[dev_index - 1]; + + return 0; } +/* + * Free the newly created device node. + * Called in error cases where configuring a newly attached + * device fails for some reason. + */ +void usb_free_device(struct udevice *controller) +{ + dev_index--; + debug("Freeing device node: %d\n", dev_index); + memset(&usb_dev[dev_index], 0, sizeof(struct usb_device)); + usb_dev[dev_index].devnum = -1; +} /* - * By the time we get here, the device has gotten a new device ID - * and is in the default state. We need to identify the thing and - * get the ball rolling.. - * - * Returns 0 for success, != 0 for error. + * XHCI issues Enable Slot command and thereafter + * allocates device contexts. Provide a weak alias + * function for the purpose, so that XHCI overrides it + * and EHCI/OHCI just work out of the box. */ -int usb_new_device(struct usb_device *dev) +__weak int usb_alloc_device(struct usb_device *udev) { - int addr, err; - int tmp; - unsigned char tmpbuf[USB_BUFSIZ]; + return 0; +} +#endif /* !CONFIG_DM_USB */ - /* We still haven't set the Address yet */ - addr = dev->devnum; - dev->devnum = 0; +static int usb_hub_port_reset(struct usb_device *dev, struct usb_device *hub) +{ + if (hub) { + unsigned short portstatus; + int err; -#ifdef CONFIG_LEGACY_USB_INIT_SEQ - /* this is the old and known way of initializing devices, it is - * different than what Windows and Linux are doing. Windows and Linux - * both retrieve 64 bytes while reading the device descriptor - * Several USB stick devices report ERR: CTL_TIMEOUT, caused by an - * invalid header while reading 8 bytes as device descriptor. */ - dev->descriptor.bMaxPacketSize0 = 8; /* Start off at 8 bytes */ - dev->maxpacketsize = PACKET_SIZE_8; - dev->epmaxpacketin[0] = 8; - dev->epmaxpacketout[0] = 8; - - err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, &dev->descriptor, 8); - if (err < 8) { - printf("\n USB device not responding, " \ - "giving up (status=%lX)\n", dev->status); - return 1; + /* reset the port for the second time */ + err = legacy_hub_port_reset(hub, dev->portnr - 1, &portstatus); + if (err < 0) { + printf("\n Couldn't reset port %i\n", dev->portnr); + return err; + } + } else { + usb_reset_root_port(dev); } -#else - /* This is a Windows scheme of initialization sequence, with double + + return 0; +} + +static int get_descriptor_len(struct usb_device *dev, int len, int expect_len) +{ + __maybe_unused struct usb_device_descriptor *desc; + ALLOC_CACHE_ALIGN_BUFFER(unsigned char, tmpbuf, USB_BUFSIZ); + int err; + + desc = (struct usb_device_descriptor *)tmpbuf; + + err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, desc, len); + if (err < expect_len) { + if (err < 0) { + printf("unable to get device descriptor (error=%d)\n", + err); + return err; + } else { + printf("USB device descriptor short read (expected %i, got %i)\n", + expect_len, err); + return -EIO; + } + } + memcpy(&dev->descriptor, tmpbuf, sizeof(dev->descriptor)); + + return 0; +} + +static int usb_setup_descriptor(struct usb_device *dev, bool do_read) +{ + /* + * This is a Windows scheme of initialization sequence, with double * reset of the device (Linux uses the same sequence) * Some equipment is said to work only with such init sequence; this * patch is based on the work by Alan Stern: * http://sourceforge.net/mailarchive/forum.php? * thread_id=5729457&forum_id=5398 */ - struct usb_device_descriptor *desc; - int port = -1; - struct usb_device *parent = dev->parent; - unsigned short portstatus; - /* send 64-byte GET-DEVICE-DESCRIPTOR request. Since the descriptor is + /* + * send 64-byte GET-DEVICE-DESCRIPTOR request. Since the descriptor is * only 18 bytes long, this will terminate with a short packet. But if * the maxpacket size is 8 or 16 the device may be waiting to transmit - * some more, or keeps on retransmitting the 8 byte header. */ - - desc = (struct usb_device_descriptor *)tmpbuf; - dev->descriptor.bMaxPacketSize0 = 64; /* Start off at 64 bytes */ - /* Default to 64 byte max packet size */ - dev->maxpacketsize = PACKET_SIZE_64; - dev->epmaxpacketin[0] = 64; - dev->epmaxpacketout[0] = 64; + * some more, or keeps on retransmitting the 8 byte header. + */ - err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, desc, 64); - if (err < 0) { - USB_PRINTF("usb_new_device: usb_get_descriptor() failed\n"); - return 1; + if (dev->speed == USB_SPEED_LOW) { + dev->descriptor.bMaxPacketSize0 = 8; + dev->maxpacketsize = PACKET_SIZE_8; + } else { + dev->descriptor.bMaxPacketSize0 = 64; + dev->maxpacketsize = PACKET_SIZE_64; } + dev->epmaxpacketin[0] = dev->descriptor.bMaxPacketSize0; + dev->epmaxpacketout[0] = dev->descriptor.bMaxPacketSize0; - dev->descriptor.bMaxPacketSize0 = desc->bMaxPacketSize0; - - /* find the port number we're at */ - if (parent) { - int j; - - for (j = 0; j < parent->maxchild; j++) { - if (parent->children[j] == dev) { - port = j; - break; - } - } - if (port < 0) { - printf("usb_new_device:cannot locate device's port.\n"); - return 1; - } + if (do_read) { + int err; - /* reset the port for the second time */ - err = hub_port_reset(dev->parent, port, &portstatus); - if (err < 0) { - printf("\n Couldn't reset port %i\n", port); - return 1; - } + /* + * Validate we've received only at least 8 bytes, not that we've + * received the entire descriptor. The reasoning is: + * - The code only uses fields in the first 8 bytes, so that's all we + * need to have fetched at this stage. + * - The smallest maxpacket size is 8 bytes. Before we know the actual + * maxpacket the device uses, the USB controller may only accept a + * single packet. Consequently we are only guaranteed to receive 1 + * packet (at least 8 bytes) even in a non-error case. + * + * At least the DWC2 controller needs to be programmed with the number + * of packets in addition to the number of bytes. A request for 64 + * bytes of data with the maxpacket guessed as 64 (above) yields a + * request for 1 packet. + */ + err = get_descriptor_len(dev, 64, 8); + if (err) + return err; } -#endif dev->epmaxpacketin[0] = dev->descriptor.bMaxPacketSize0; dev->epmaxpacketout[0] = dev->descriptor.bMaxPacketSize0; @@ -861,7 +1021,37 @@ int usb_new_device(struct usb_device *dev) case 64: dev->maxpacketsize = PACKET_SIZE_64; break; + default: + printf("usb_new_device: invalid max packet size\n"); + return -EIO; } + + return 0; +} + +static int usb_prepare_device(struct usb_device *dev, int addr, bool do_read, + struct usb_device *parent) +{ + int err; + + /* + * Allocate usb 3.0 device context. + * USB 3.0 (xHCI) protocol tries to allocate device slot + * and related data structures first. This call does that. + * Refer to sec 4.3.2 in xHCI spec rev1.0 + */ + err = usb_alloc_device(dev); + if (err) { + printf("Cannot allocate device context to get SLOT_ID\n"); + return err; + } + err = usb_setup_descriptor(dev, do_read); + if (err) + return err; + err = usb_hub_port_reset(dev, parent); + if (err) + return err; + dev->devnum = addr; err = usb_set_address(dev); /* set address */ @@ -869,42 +1059,53 @@ int usb_new_device(struct usb_device *dev) if (err < 0) { printf("\n USB device not accepting new address " \ "(error=%lX)\n", dev->status); - return 1; + return err; } - wait_ms(10); /* Let the SET_ADDRESS settle */ + mdelay(10); /* Let the SET_ADDRESS settle */ - tmp = sizeof(dev->descriptor); + return 0; +} + +int usb_select_config(struct usb_device *dev) +{ + ALLOC_CACHE_ALIGN_BUFFER(unsigned char, tmpbuf, USB_BUFSIZ); + int err; + + err = get_descriptor_len(dev, USB_DT_DEVICE_SIZE, USB_DT_DEVICE_SIZE); + if (err) + return err; - err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, - &dev->descriptor, sizeof(dev->descriptor)); - if (err < tmp) { - if (err < 0) - printf("unable to get device descriptor (error=%d)\n", - err); - else - printf("USB device descriptor short read " \ - "(expected %i, got %i)\n", tmp, err); - return 1; - } /* correct le values */ le16_to_cpus(&dev->descriptor.bcdUSB); le16_to_cpus(&dev->descriptor.idVendor); le16_to_cpus(&dev->descriptor.idProduct); le16_to_cpus(&dev->descriptor.bcdDevice); + /* only support for one config for now */ - usb_get_configuration_no(dev, &tmpbuf[0], 0); - usb_parse_config(dev, &tmpbuf[0], 0); + err = usb_get_configuration_no(dev, tmpbuf, 0); + if (err < 0) { + printf("usb_new_device: Cannot read configuration, " \ + "skipping device %04x:%04x\n", + dev->descriptor.idVendor, dev->descriptor.idProduct); + return err; + } + usb_parse_config(dev, tmpbuf, 0); usb_set_maxpacket(dev); - /* we set the default configuration here */ - if (usb_set_configuration(dev, dev->config.bConfigurationValue)) { + /* + * we set the default configuration here + * This seems premature. If the driver wants a different configuration + * it will need to select itself. + */ + err = usb_set_configuration(dev, dev->config.desc.bConfigurationValue); + if (err < 0) { printf("failed to set default configuration " \ "len %d, status %lX\n", dev->act_len, dev->status); - return -1; + return err; } - USB_PRINTF("new device strings: Mfr=%d, Product=%d, SerialNumber=%d\n", - dev->descriptor.iManufacturer, dev->descriptor.iProduct, - dev->descriptor.iSerialNumber); + debug("new device strings: Mfr=%d, Product=%d, SerialNumber=%d\n", + dev->descriptor.iManufacturer, dev->descriptor.iProduct, + dev->descriptor.iSerialNumber); memset(dev->mf, 0, sizeof(dev->mf)); memset(dev->prod, 0, sizeof(dev->prod)); memset(dev->serial, 0, sizeof(dev->serial)); @@ -917,463 +1118,85 @@ int usb_new_device(struct usb_device *dev) if (dev->descriptor.iSerialNumber) usb_string(dev, dev->descriptor.iSerialNumber, dev->serial, sizeof(dev->serial)); - USB_PRINTF("Manufacturer %s\n", dev->mf); - USB_PRINTF("Product %s\n", dev->prod); - USB_PRINTF("SerialNumber %s\n", dev->serial); - /* now prode if the device is a hub */ - usb_hub_probe(dev, 0); - return 0; -} - -/* build device Tree */ -void usb_scan_devices(void) -{ - int i; - struct usb_device *dev; - - /* first make all devices unknown */ - for (i = 0; i < USB_MAX_DEVICE; i++) { - memset(&usb_dev[i], 0, sizeof(struct usb_device)); - usb_dev[i].devnum = -1; - } - dev_index = 0; - /* device 0 is always present (root hub, so let it analyze) */ - dev = usb_alloc_new_device(); - if (usb_new_device(dev)) - printf("No USB Device found\n"); - else - printf("%d USB Device(s) found\n", dev_index); - /* insert "driver" if possible */ -#ifdef CONFIG_USB_KEYBOARD - drv_usb_kbd_init(); - USB_PRINTF("scan end\n"); -#endif -} - - -/**************************************************************************** - * HUB "Driver" - * Probes device for being a hub and configurate it - */ - -#undef USB_HUB_DEBUG - -#ifdef USB_HUB_DEBUG -#define USB_HUB_PRINTF(fmt, args...) printf(fmt , ##args) -#else -#define USB_HUB_PRINTF(fmt, args...) -#endif - - -static struct usb_hub_device hub_dev[USB_MAX_HUB]; -static int usb_hub_index; + debug("Manufacturer %s\n", dev->mf); + debug("Product %s\n", dev->prod); + debug("SerialNumber %s\n", dev->serial); - -int usb_get_hub_descriptor(struct usb_device *dev, void *data, int size) -{ - return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), - USB_REQ_GET_DESCRIPTOR, USB_DIR_IN | USB_RT_HUB, - USB_DT_HUB << 8, 0, data, size, USB_CNTL_TIMEOUT); -} - -int usb_clear_hub_feature(struct usb_device *dev, int feature) -{ - return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), - USB_REQ_CLEAR_FEATURE, USB_RT_HUB, feature, - 0, NULL, 0, USB_CNTL_TIMEOUT); -} - -int usb_clear_port_feature(struct usb_device *dev, int port, int feature) -{ - return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), - USB_REQ_CLEAR_FEATURE, USB_RT_PORT, feature, - port, NULL, 0, USB_CNTL_TIMEOUT); -} - -int usb_set_port_feature(struct usb_device *dev, int port, int feature) -{ - return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), - USB_REQ_SET_FEATURE, USB_RT_PORT, feature, - port, NULL, 0, USB_CNTL_TIMEOUT); -} - -int usb_get_hub_status(struct usb_device *dev, void *data) -{ - return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), - USB_REQ_GET_STATUS, USB_DIR_IN | USB_RT_HUB, 0, 0, - data, sizeof(struct usb_hub_status), USB_CNTL_TIMEOUT); -} - -int usb_get_port_status(struct usb_device *dev, int port, void *data) -{ - return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), - USB_REQ_GET_STATUS, USB_DIR_IN | USB_RT_PORT, 0, port, - data, sizeof(struct usb_hub_status), USB_CNTL_TIMEOUT); -} - - -static void usb_hub_power_on(struct usb_hub_device *hub) -{ - int i; - struct usb_device *dev; - - dev = hub->pusb_dev; - /* Enable power to the ports */ - USB_HUB_PRINTF("enabling power on all ports\n"); - for (i = 0; i < dev->maxchild; i++) { - usb_set_port_feature(dev, i + 1, USB_PORT_FEAT_POWER); - USB_HUB_PRINTF("port %d returns %lX\n", i + 1, dev->status); - wait_ms(hub->desc.bPwrOn2PwrGood * 2); - } -} - -void usb_hub_reset(void) -{ - usb_hub_index = 0; + return 0; } -struct usb_hub_device *usb_hub_allocate(void) +int usb_setup_device(struct usb_device *dev, bool do_read, + struct usb_device *parent) { - if (usb_hub_index < USB_MAX_HUB) - return &hub_dev[usb_hub_index++]; + int addr; + int ret; - printf("ERROR: USB_MAX_HUB (%d) reached\n", USB_MAX_HUB); - return NULL; -} + /* We still haven't set the Address yet */ + addr = dev->devnum; + dev->devnum = 0; -#define MAX_TRIES 5 + ret = usb_prepare_device(dev, addr, do_read, parent); + if (ret) + return ret; + ret = usb_select_config(dev); -static inline char *portspeed(int portstatus) -{ - if (portstatus & (1 << USB_PORT_FEAT_HIGHSPEED)) - return "480 Mb/s"; - else if (portstatus & (1 << USB_PORT_FEAT_LOWSPEED)) - return "1.5 Mb/s"; - else - return "12 Mb/s"; + return ret; } -static int hub_port_reset(struct usb_device *dev, int port, - unsigned short *portstat) +#ifndef CONFIG_DM_USB +/* + * By the time we get here, the device has gotten a new device ID + * and is in the default state. We need to identify the thing and + * get the ball rolling.. + * + * Returns 0 for success, != 0 for error. + */ +int usb_new_device(struct usb_device *dev) { - int tries; - struct usb_port_status portsts; - unsigned short portstatus, portchange; - - USB_HUB_PRINTF("hub_port_reset: resetting port %d...\n", port); - for (tries = 0; tries < MAX_TRIES; tries++) { - - usb_set_port_feature(dev, port + 1, USB_PORT_FEAT_RESET); - wait_ms(200); - - if (usb_get_port_status(dev, port + 1, &portsts) < 0) { - USB_HUB_PRINTF("get_port_status failed status %lX\n", - dev->status); - return -1; - } - portstatus = le16_to_cpu(portsts.wPortStatus); - portchange = le16_to_cpu(portsts.wPortChange); - - USB_HUB_PRINTF("portstatus %x, change %x, %s\n", - portstatus, portchange, - portspeed(portstatus)); - - USB_HUB_PRINTF("STAT_C_CONNECTION = %d STAT_CONNECTION = %d" \ - " USB_PORT_STAT_ENABLE %d\n", - (portchange & USB_PORT_STAT_C_CONNECTION) ? 1 : 0, - (portstatus & USB_PORT_STAT_CONNECTION) ? 1 : 0, - (portstatus & USB_PORT_STAT_ENABLE) ? 1 : 0); - - if ((portchange & USB_PORT_STAT_C_CONNECTION) || - !(portstatus & USB_PORT_STAT_CONNECTION)) - return -1; - - if (portstatus & USB_PORT_STAT_ENABLE) - break; + bool do_read = true; + int err; - wait_ms(200); - } + /* + * XHCI needs to issue a Address device command to setup + * proper device context structures, before it can interact + * with the device. So a get_descriptor will fail before any + * of that is done for XHCI unlike EHCI. + */ +#ifdef CONFIG_USB_XHCI + do_read = false; +#endif + err = usb_setup_device(dev, do_read, dev->parent); + if (err) + return err; - if (tries == MAX_TRIES) { - USB_HUB_PRINTF("Cannot enable port %i after %i retries, " \ - "disabling port.\n", port + 1, MAX_TRIES); - USB_HUB_PRINTF("Maybe the USB cable is bad?\n"); - return -1; - } + /* Now probe if the device is a hub */ + err = usb_hub_probe(dev, 0); + if (err < 0) + return err; - usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_C_RESET); - *portstat = portstatus; return 0; } +#endif - -void usb_hub_port_connect_change(struct usb_device *dev, int port) +__weak +int board_usb_init(int index, enum usb_init_type init) { - struct usb_device *usb; - struct usb_port_status portsts; - unsigned short portstatus, portchange; - - /* Check status */ - if (usb_get_port_status(dev, port + 1, &portsts) < 0) { - USB_HUB_PRINTF("get_port_status failed\n"); - return; - } - - portstatus = le16_to_cpu(portsts.wPortStatus); - portchange = le16_to_cpu(portsts.wPortChange); - USB_HUB_PRINTF("portstatus %x, change %x, %s\n", - portstatus, portchange, portspeed(portstatus)); - - /* Clear the connection change status */ - usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_C_CONNECTION); - - /* Disconnect any existing devices under this port */ - if (((!(portstatus & USB_PORT_STAT_CONNECTION)) && - (!(portstatus & USB_PORT_STAT_ENABLE))) || (dev->children[port])) { - USB_HUB_PRINTF("usb_disconnect(&hub->children[port]);\n"); - /* Return now if nothing is connected */ - if (!(portstatus & USB_PORT_STAT_CONNECTION)) - return; - } - wait_ms(200); - - /* Reset the port */ - if (hub_port_reset(dev, port, &portstatus) < 0) { - printf("cannot reset port %i!?\n", port + 1); - return; - } - - wait_ms(200); - - /* Allocate a new device struct for it */ - usb = usb_alloc_new_device(); - - if (portstatus & USB_PORT_STAT_HIGH_SPEED) - usb->speed = USB_SPEED_HIGH; - else if (portstatus & USB_PORT_STAT_LOW_SPEED) - usb->speed = USB_SPEED_LOW; - else - usb->speed = USB_SPEED_FULL; - - dev->children[port] = usb; - usb->parent = dev; - /* Run it through the hoops (find a driver, etc) */ - if (usb_new_device(usb)) { - /* Woops, disable the port */ - USB_HUB_PRINTF("hub: disabling port %d\n", port + 1); - usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_ENABLE); - } + return 0; } - -int usb_hub_configure(struct usb_device *dev) +__weak +int board_usb_cleanup(int index, enum usb_init_type init) { - unsigned char buffer[USB_BUFSIZ], *bitmap; - struct usb_hub_descriptor *descriptor; - struct usb_hub_status *hubsts; - int i; - struct usb_hub_device *hub; - - /* "allocate" Hub device */ - hub = usb_hub_allocate(); - if (hub == NULL) - return -1; - hub->pusb_dev = dev; - /* Get the the hub descriptor */ - if (usb_get_hub_descriptor(dev, buffer, 4) < 0) { - USB_HUB_PRINTF("usb_hub_configure: failed to get hub " \ - "descriptor, giving up %lX\n", dev->status); - return -1; - } - descriptor = (struct usb_hub_descriptor *)buffer; - - /* silence compiler warning if USB_BUFSIZ is > 256 [= sizeof(char)] */ - i = descriptor->bLength; - if (i > USB_BUFSIZ) { - USB_HUB_PRINTF("usb_hub_configure: failed to get hub " \ - "descriptor - too long: %d\n", - descriptor->bLength); - return -1; - } - - if (usb_get_hub_descriptor(dev, buffer, descriptor->bLength) < 0) { - USB_HUB_PRINTF("usb_hub_configure: failed to get hub " \ - "descriptor 2nd giving up %lX\n", dev->status); - return -1; - } - memcpy((unsigned char *)&hub->desc, buffer, descriptor->bLength); - /* adjust 16bit values */ - hub->desc.wHubCharacteristics = - le16_to_cpu(descriptor->wHubCharacteristics); - /* set the bitmap */ - bitmap = (unsigned char *)&hub->desc.DeviceRemovable[0]; - /* devices not removable by default */ - memset(bitmap, 0xff, (USB_MAXCHILDREN+1+7)/8); - bitmap = (unsigned char *)&hub->desc.PortPowerCtrlMask[0]; - memset(bitmap, 0xff, (USB_MAXCHILDREN+1+7)/8); /* PowerMask = 1B */ - - for (i = 0; i < ((hub->desc.bNbrPorts + 1 + 7)/8); i++) - hub->desc.DeviceRemovable[i] = descriptor->DeviceRemovable[i]; - - for (i = 0; i < ((hub->desc.bNbrPorts + 1 + 7)/8); i++) - hub->desc.DeviceRemovable[i] = descriptor->PortPowerCtrlMask[i]; - - dev->maxchild = descriptor->bNbrPorts; - USB_HUB_PRINTF("%d ports detected\n", dev->maxchild); - - switch (hub->desc.wHubCharacteristics & HUB_CHAR_LPSM) { - case 0x00: - USB_HUB_PRINTF("ganged power switching\n"); - break; - case 0x01: - USB_HUB_PRINTF("individual port power switching\n"); - break; - case 0x02: - case 0x03: - USB_HUB_PRINTF("unknown reserved power switching mode\n"); - break; - } - - if (hub->desc.wHubCharacteristics & HUB_CHAR_COMPOUND) - USB_HUB_PRINTF("part of a compound device\n"); - else - USB_HUB_PRINTF("standalone hub\n"); - - switch (hub->desc.wHubCharacteristics & HUB_CHAR_OCPM) { - case 0x00: - USB_HUB_PRINTF("global over-current protection\n"); - break; - case 0x08: - USB_HUB_PRINTF("individual port over-current protection\n"); - break; - case 0x10: - case 0x18: - USB_HUB_PRINTF("no over-current protection\n"); - break; - } - - USB_HUB_PRINTF("power on to power good time: %dms\n", - descriptor->bPwrOn2PwrGood * 2); - USB_HUB_PRINTF("hub controller current requirement: %dmA\n", - descriptor->bHubContrCurrent); - - for (i = 0; i < dev->maxchild; i++) - USB_HUB_PRINTF("port %d is%s removable\n", i + 1, - hub->desc.DeviceRemovable[(i + 1) / 8] & \ - (1 << ((i + 1) % 8)) ? " not" : ""); - - if (sizeof(struct usb_hub_status) > USB_BUFSIZ) { - USB_HUB_PRINTF("usb_hub_configure: failed to get Status - " \ - "too long: %d\n", descriptor->bLength); - return -1; - } - - if (usb_get_hub_status(dev, buffer) < 0) { - USB_HUB_PRINTF("usb_hub_configure: failed to get Status %lX\n", - dev->status); - return -1; - } - - hubsts = (struct usb_hub_status *)buffer; - USB_HUB_PRINTF("get_hub_status returned status %X, change %X\n", - le16_to_cpu(hubsts->wHubStatus), - le16_to_cpu(hubsts->wHubChange)); - USB_HUB_PRINTF("local power source is %s\n", - (le16_to_cpu(hubsts->wHubStatus) & HUB_STATUS_LOCAL_POWER) ? \ - "lost (inactive)" : "good"); - USB_HUB_PRINTF("%sover-current condition exists\n", - (le16_to_cpu(hubsts->wHubStatus) & HUB_STATUS_OVERCURRENT) ? \ - "" : "no "); - usb_hub_power_on(hub); - - for (i = 0; i < dev->maxchild; i++) { - struct usb_port_status portsts; - unsigned short portstatus, portchange; - - if (usb_get_port_status(dev, i + 1, &portsts) < 0) { - USB_HUB_PRINTF("get_port_status failed\n"); - continue; - } - - portstatus = le16_to_cpu(portsts.wPortStatus); - portchange = le16_to_cpu(portsts.wPortChange); - USB_HUB_PRINTF("Port %d Status %X Change %X\n", - i + 1, portstatus, portchange); - - if (portchange & USB_PORT_STAT_C_CONNECTION) { - USB_HUB_PRINTF("port %d connection change\n", i + 1); - usb_hub_port_connect_change(dev, i); - } - if (portchange & USB_PORT_STAT_C_ENABLE) { - USB_HUB_PRINTF("port %d enable change, status %x\n", - i + 1, portstatus); - usb_clear_port_feature(dev, i + 1, - USB_PORT_FEAT_C_ENABLE); - - /* EM interference sometimes causes bad shielded USB - * devices to be shutdown by the hub, this hack enables - * them again. Works at least with mouse driver */ - if (!(portstatus & USB_PORT_STAT_ENABLE) && - (portstatus & USB_PORT_STAT_CONNECTION) && - ((dev->children[i]))) { - USB_HUB_PRINTF("already running port %i " \ - "disabled by hub (EMI?), " \ - "re-enabling...\n", i + 1); - usb_hub_port_connect_change(dev, i); - } - } - if (portstatus & USB_PORT_STAT_SUSPEND) { - USB_HUB_PRINTF("port %d suspend change\n", i + 1); - usb_clear_port_feature(dev, i + 1, - USB_PORT_FEAT_SUSPEND); - } - - if (portchange & USB_PORT_STAT_C_OVERCURRENT) { - USB_HUB_PRINTF("port %d over-current change\n", i + 1); - usb_clear_port_feature(dev, i + 1, - USB_PORT_FEAT_C_OVER_CURRENT); - usb_hub_power_on(hub); - } - - if (portchange & USB_PORT_STAT_C_RESET) { - USB_HUB_PRINTF("port %d reset change\n", i + 1); - usb_clear_port_feature(dev, i + 1, - USB_PORT_FEAT_C_RESET); - } - } /* end for i all ports */ - return 0; } -int usb_hub_probe(struct usb_device *dev, int ifnum) +bool usb_device_has_child_on_port(struct usb_device *parent, int port) { - struct usb_interface_descriptor *iface; - struct usb_endpoint_descriptor *ep; - int ret; - - iface = &dev->config.if_desc[ifnum]; - /* Is it a hub? */ - if (iface->bInterfaceClass != USB_CLASS_HUB) - return 0; - /* Some hubs have a subclass of 1, which AFAICT according to the */ - /* specs is not defined, but it works */ - if ((iface->bInterfaceSubClass != 0) && - (iface->bInterfaceSubClass != 1)) - return 0; - /* Multiple endpoints? What kind of mutant ninja-hub is this? */ - if (iface->bNumEndpoints != 1) - return 0; - ep = &iface->ep_desc[0]; - /* Output endpoint? Curiousier and curiousier.. */ - if (!(ep->bEndpointAddress & USB_DIR_IN)) - return 0; - /* If it's not an interrupt endpoint, we'd better punt! */ - if ((ep->bmAttributes & 3) != 3) - return 0; - /* We found a hub */ - USB_HUB_PRINTF("USB hub found\n"); - ret = usb_hub_configure(dev); - return ret; +#ifdef CONFIG_DM_USB + return false; +#else + return parent->children[port] != NULL; +#endif } /* EOF */