#include <common.h>
#include <command.h>
#include <asm/processor.h>
+#include <linux/compiler.h>
#include <linux/ctype.h>
#include <asm/byteorder.h>
+#include <asm/unaligned.h>
#include <usb.h>
#ifdef CONFIG_4xx
#include <asm/4xx_pci.h>
#endif
-#undef USB_DEBUG
-
-#ifdef USB_DEBUG
-#define USB_PRINTF(fmt, args...) printf (fmt , ##args)
+#ifdef DEBUG
+#define USB_DEBUG 1
+#define USB_HUB_DEBUG 1
#else
-#define USB_PRINTF(fmt, args...)
+#define USB_DEBUG 0
+#define USB_HUB_DEBUG 0
#endif
+#define USB_PRINTF(fmt, args...) debug_cond(USB_DEBUG, fmt, ##args)
+#define USB_HUB_PRINTF(fmt, args...) debug_cond(USB_HUB_DEBUG, fmt, ##args)
+
#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);
-
-
-/***********************************************************************
- * wait_ms
- */
+#ifndef CONFIG_USB_MAX_CONTROLLER_COUNT
+#define CONFIG_USB_MAX_CONTROLLER_COUNT 1
+#endif
-void __inline__ wait_ms(unsigned long ms)
-{
- while (ms-- > 0)
- udelay(1000);
-}
/***************************************************************************
* Init USB Device
*/
-
int usb_init(void)
{
- int result;
+ void *ctrl;
+ struct usb_device *dev;
+ int i, start_index = 0;
- 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);
+ if (usb_lowlevel_init(i, &ctrl)) {
+ puts("lowlevel init failed\n");
+ continue;
+ }
+ /*
+ * lowlevel init is OK, now scan the bus for devices
+ * i.e. search HUBs and configure them
+ */
+ start_index = dev_index;
+ printf("scanning bus %d for devices... ", i);
+ dev = usb_alloc_new_device(ctrl);
+ /*
+ * device 0 is always present
+ * (root hub, so let it analyze)
+ */
+ if (dev)
+ usb_new_device(dev);
+
+ if (start_index == dev_index)
+ puts("No USB Device found\n");
+ 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;
+ }
+
+ USB_PRINTF("scan end\n");
+ /* if we were not able to find at least one working bus, bail out */
+ if (!usb_started) {
+ puts("USB error: all controllers failed lowlevel init\n");
return -1;
}
+
+ return 0;
}
/******************************************************************************
*/
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;
}
/*
* 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;
}
unsigned short value, unsigned short index,
void *data, unsigned short size, int timeout)
{
+ ALLOC_CACHE_ALIGN_BUFFER(struct devrequest, setup_packet, 1);
+
if ((timeout == 0) && (!asynch_allowed)) {
/* request for a asynch control pipe is not allowed */
return -1;
}
/* 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);
+ 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);
dev->status = USB_ST_NOT_PROC; /*not yet processed */
- submit_control_msg(dev, pipe, data, size, &setup_packet);
+ if (submit_control_msg(dev, pipe, data, size, setup_packet) < 0)
+ return -1;
if (timeout == 0)
return (int)size;
+ /*
+ * 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;
- wait_ms(1);
+ mdelay(1);
}
- if (dev->status == 0)
- return dev->act_len;
- else
+ if (dev->status)
return -1;
+
+ return dev->act_len;
+
}
/*-------------------------------------------------------------------
if (len < 0)
return -1;
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 -1;
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)
{
/* direction is out -> use emaxpacket out */
if ((pipe & USB_DIR_IN) == 0)
- return(dev->epmaxpacketout[((pipe>>15) & 0xf)]);
+ return dev->epmaxpacketout[((pipe>>15) & 0xf)];
else
- return(dev->epmaxpacketin[((pipe>>15) & 0xf)]);
+ 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;
+ dev->epmaxpacketout[b] = ep_wMaxPacketSize;
+ dev->epmaxpacketin[b] = ep_wMaxPacketSize;
USB_PRINTF("##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;
+ if (ep_wMaxPacketSize > dev->epmaxpacketout[b]) {
+ dev->epmaxpacketout[b] = ep_wMaxPacketSize;
USB_PRINTF("##EP epmaxpacketout[%d] = %d\n",
b, dev->epmaxpacketout[b]);
}
} else {
/* IN Endpoint */
- if (ep->wMaxPacketSize > dev->epmaxpacketin[b]) {
- dev->epmaxpacketin[b] = ep->wMaxPacketSize;
+ if (ep_wMaxPacketSize > dev->epmaxpacketin[b]) {
+ dev->epmaxpacketin[b] = ep_wMaxPacketSize;
USB_PRINTF("##EP epmaxpacketin[%d] = %d\n",
b, dev->epmaxpacketin[b]);
}
/*
* 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;
}
* Parse the config, located in buffer, and fills the dev->config structure.
* Note that all little/big endian swapping are done automatically.
*/
-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;
ifno = -1;
epno = -1;
return -1;
}
memcpy(&dev->config, buffer, buffer[0]);
- le16_to_cpus(&(dev->config.wTotalLength));
+ le16_to_cpus(&(dev->config.desc.wTotalLength));
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) {
switch (head->bDescriptorType) {
case USB_DT_INTERFACE:
if (((struct usb_interface_descriptor *) \
dev->config.if_desc[ifno].no_of_ep = 0;
dev->config.if_desc[ifno].num_altsetting = 1;
curr_if_num =
- dev->config.if_desc[ifno].bInterfaceNumber;
+ dev->config.if_desc[ifno].desc.bInterfaceNumber;
} else {
/* found alternate setting for the interface */
dev->config.if_desc[ifno].num_altsetting++;
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));
+ 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);
USB_PRINTF("if %d, ep %d\n", ifno, epno);
break;
default:
head->bDescriptorType);
{
- ch = (unsigned char *)head;
+#ifdef USB_DEBUG
+ unsigned char *ch = (unsigned char *)head;
+#endif
for (i = 0; i < head->bLength; i++)
USB_PRINTF("%02X ", *ch++);
USB_PRINTF("\n\n\n");
/**********************************************************************
* 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;
{
int result;
unsigned int tmp;
- struct usb_config_descriptor *config;
+ struct usb_configuration_descriptor *config;
-
- config = (struct usb_config_descriptor *)&buffer[0];
- result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, 8);
- if (result < 8) {
+ config = (struct usb_configuration_descriptor *)&buffer[0];
+ result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, 9);
+ if (result < 9) {
if (result < 0)
printf("unable to get descriptor, error %lX\n",
dev->status);
else
printf("config descriptor too short " \
- "(expected %i, got %i)\n", 8, result);
+ "(expected %i, got %i)\n", 9, result);
return -1;
}
tmp = le16_to_cpu(config->wTotalLength);
if (tmp > USB_BUFSIZ) {
- USB_PRINTF("usb_get_configuration_no: failed to get " \
- "descriptor - too long: %d\n", tmp);
+ printf("usb_get_configuration_no: failed to get " \
+ "descriptor - too long: %d\n", tmp);
return -1;
}
* 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;
*/
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;
}
/********************************************************************
* 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);
/********************************************************************
* 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;
*/
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;
err = usb_string_sub(dev, 0, 0, tbuf);
if (err < 0) {
USB_PRINTF("error getting string descriptor 0 " \
- "(error=%x)\n", dev->status);
+ "(error=%lx)\n", dev->status);
return -1;
} else if (tbuf[0] < 4) {
USB_PRINTF("string descriptor 0 too short\n");
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)
+struct usb_device *usb_alloc_new_device(void *controller)
{
int i;
USB_PRINTF("New Device %d\n", dev_index);
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];
}
{
int addr, err;
int tmp;
- unsigned char tmpbuf[USB_BUFSIZ];
-
- dev->descriptor.bMaxPacketSize0 = 8; /* Start off at 8 bytes */
- dev->maxpacketsize = 0; /* Default to 8 byte max packet size */
- dev->epmaxpacketin [0] = 8;
- dev->epmaxpacketout[0] = 8;
+ ALLOC_CACHE_ALIGN_BUFFER(unsigned char, tmpbuf, USB_BUFSIZ);
/* We still haven't set the Address yet */
addr = dev->devnum;
dev->devnum = 0;
-#undef NEW_INIT_SEQ
-#ifdef NEW_INIT_SEQ
- /* this is a Windows scheme of initialization sequence, with double
- * reset of the device. 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
+#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, tmpbuf, 8);
+ if (err < 8) {
+ printf("\n USB device not responding, " \
+ "giving up (status=%lX)\n", dev->status);
+ return 1;
+ }
+ memcpy(&dev->descriptor, tmpbuf, 8);
+#else
+ /* 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
*/
- int j;
struct usb_device_descriptor *desc;
int port = -1;
struct usb_device *parent = dev->parent;
/* 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. */
+ * some more, or keeps on retransmitting the 8 byte header. */
desc = (struct usb_device_descriptor *)tmpbuf;
- desc->bMaxPacketSize0 = 0;
- for (j = 0; j < 3; ++j) {
- err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, desc, 64);
- if (err < 0) {
- USB_PRINTF("usb_new_device: 64 byte descr\n");
- break;
- }
+ 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;
+
+ 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;
}
+
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) {
return 1;
}
}
-#else
- /* and this is the old and known way of initializing devices */
- 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;
- }
#endif
- dev->epmaxpacketin [0] = dev->descriptor.bMaxPacketSize0;
+ dev->epmaxpacketin[0] = dev->descriptor.bMaxPacketSize0;
dev->epmaxpacketout[0] = dev->descriptor.bMaxPacketSize0;
switch (dev->descriptor.bMaxPacketSize0) {
- case 8: dev->maxpacketsize = 0; break;
- case 16: dev->maxpacketsize = 1; break;
- case 32: dev->maxpacketsize = 2; break;
- case 64: dev->maxpacketsize = 3; break;
+ case 8:
+ dev->maxpacketsize = PACKET_SIZE_8;
+ break;
+ case 16:
+ dev->maxpacketsize = PACKET_SIZE_16;
+ break;
+ case 32:
+ dev->maxpacketsize = PACKET_SIZE_32;
+ break;
+ case 64:
+ dev->maxpacketsize = PACKET_SIZE_64;
+ break;
}
dev->devnum = addr;
return 1;
}
- wait_ms(10); /* Let the SET_ADDRESS settle */
+ mdelay(10); /* Let the SET_ADDRESS settle */
tmp = sizeof(dev->descriptor);
err = usb_get_descriptor(dev, USB_DT_DEVICE, 0,
- &dev->descriptor, sizeof(dev->descriptor));
+ tmpbuf, sizeof(dev->descriptor));
if (err < tmp) {
if (err < 0)
printf("unable to get device descriptor (error=%d)\n",
"(expected %i, got %i)\n", tmp, err);
return 1;
}
+ memcpy(&dev->descriptor, tmpbuf, sizeof(dev->descriptor));
/* 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 -1;
+ }
+ usb_parse_config(dev, tmpbuf, 0);
usb_set_maxpacket(dev);
/* we set the default configuration here */
- if (usb_set_configuration(dev, dev->config.bConfigurationValue)) {
+ if (usb_set_configuration(dev, dev->config.desc.bConfigurationValue)) {
printf("failed to set default configuration " \
"len %d, status %lX\n", dev->act_len, dev->status);
return -1;
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();
- usb_new_device(dev);
- 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;
-
-
-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;
-}
-
-struct usb_hub_device *usb_hub_allocate(void)
-{
- if (usb_hub_index < USB_MAX_HUB)
- return &hub_dev[usb_hub_index++];
-
- printf("ERROR: USB_MAX_HUB (%d) reached\n", USB_MAX_HUB);
- return NULL;
-}
-
-#define MAX_TRIES 5
-
-static int hub_port_reset(struct usb_device *dev, int port,
- unsigned short *portstat)
-{
- 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,
- portstatus&(1<<USB_PORT_FEAT_LOWSPEED) ? \
- "Low Speed" : "High Speed");
- 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;
-
- wait_ms(200);
- }
-
- 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;
- }
-
- usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_C_RESET);
- *portstat = portstatus;
- return 0;
-}
-
-
-void usb_hub_port_connect_change(struct usb_device *dev, int port)
-{
- 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,
- portstatus&(1 << USB_PORT_FEAT_LOWSPEED) ? \
- "Low Speed" : "High Speed");
-
- /* 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();
- usb->slow = (portstatus & USB_PORT_STAT_LOW_SPEED) ? 1 : 0;
-
- 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);
- }
-}
-
-
-int usb_hub_configure(struct usb_device *dev)
-{
- 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)
-{
- 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;
-}
-
/* EOF */