diff options
Diffstat (limited to 'drivers/usb/core')
-rw-r--r-- | drivers/usb/core/buffer.c | 18 | ||||
-rw-r--r-- | drivers/usb/core/config.c | 37 | ||||
-rw-r--r-- | drivers/usb/core/devices.c | 26 | ||||
-rw-r--r-- | drivers/usb/core/devio.c | 240 | ||||
-rw-r--r-- | drivers/usb/core/file.c | 9 | ||||
-rw-r--r-- | drivers/usb/core/hcd-pci.c | 2 | ||||
-rw-r--r-- | drivers/usb/core/hcd.c | 114 | ||||
-rw-r--r-- | drivers/usb/core/hub.c | 114 | ||||
-rw-r--r-- | drivers/usb/core/hub.h | 7 | ||||
-rw-r--r-- | drivers/usb/core/sysfs.c | 68 | ||||
-rw-r--r-- | drivers/usb/core/urb.c | 3 | ||||
-rw-r--r-- | drivers/usb/core/usb.c | 5 | ||||
-rw-r--r-- | drivers/usb/core/usb.h | 2 |
13 files changed, 489 insertions, 156 deletions
diff --git a/drivers/usb/core/buffer.c b/drivers/usb/core/buffer.c index 89f2e7765093..2741566ee4f2 100644 --- a/drivers/usb/core/buffer.c +++ b/drivers/usb/core/buffer.c @@ -62,8 +62,9 @@ int hcd_buffer_create(struct usb_hcd *hcd) char name[16]; int i, size; - if (!hcd->self.controller->dma_mask && - !(hcd->driver->flags & HCD_LOCAL_MEM)) + if (!IS_ENABLED(CONFIG_HAS_DMA) || + (!hcd->self.controller->dma_mask && + !(hcd->driver->flags & HCD_LOCAL_MEM))) return 0; for (i = 0; i < HCD_BUFFER_POOLS; i++) { @@ -93,6 +94,9 @@ void hcd_buffer_destroy(struct usb_hcd *hcd) { int i; + if (!IS_ENABLED(CONFIG_HAS_DMA)) + return; + for (i = 0; i < HCD_BUFFER_POOLS; i++) { struct dma_pool *pool = hcd->pool[i]; @@ -119,8 +123,9 @@ void *hcd_buffer_alloc( int i; /* some USB hosts just use PIO */ - if (!bus->controller->dma_mask && - !(hcd->driver->flags & HCD_LOCAL_MEM)) { + if (!IS_ENABLED(CONFIG_HAS_DMA) || + (!bus->controller->dma_mask && + !(hcd->driver->flags & HCD_LOCAL_MEM))) { *dma = ~(dma_addr_t) 0; return kmalloc(size, mem_flags); } @@ -145,8 +150,9 @@ void hcd_buffer_free( if (!addr) return; - if (!bus->controller->dma_mask && - !(hcd->driver->flags & HCD_LOCAL_MEM)) { + if (!IS_ENABLED(CONFIG_HAS_DMA) || + (!bus->controller->dma_mask && + !(hcd->driver->flags & HCD_LOCAL_MEM))) { kfree(addr); return; } diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c index 5050760f5e17..5eb1a87228b4 100644 --- a/drivers/usb/core/config.c +++ b/drivers/usb/core/config.c @@ -43,6 +43,27 @@ static int find_next_descriptor(unsigned char *buffer, int size, return buffer - buffer0; } +static void usb_parse_ssp_isoc_endpoint_companion(struct device *ddev, + int cfgno, int inum, int asnum, struct usb_host_endpoint *ep, + unsigned char *buffer, int size) +{ + struct usb_ssp_isoc_ep_comp_descriptor *desc; + + /* + * The SuperSpeedPlus Isoc endpoint companion descriptor immediately + * follows the SuperSpeed Endpoint Companion descriptor + */ + desc = (struct usb_ssp_isoc_ep_comp_descriptor *) buffer; + if (desc->bDescriptorType != USB_DT_SSP_ISOC_ENDPOINT_COMP || + size < USB_DT_SSP_ISOC_EP_COMP_SIZE) { + dev_warn(ddev, "Invalid SuperSpeedPlus isoc endpoint companion" + "for config %d interface %d altsetting %d ep %d.\n", + cfgno, inum, asnum, ep->desc.bEndpointAddress); + return; + } + memcpy(&ep->ssp_isoc_ep_comp, desc, USB_DT_SSP_ISOC_EP_COMP_SIZE); +} + static void usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno, int inum, int asnum, struct usb_host_endpoint *ep, unsigned char *buffer, int size) @@ -54,6 +75,9 @@ static void usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno, * be the first thing immediately following the endpoint descriptor. */ desc = (struct usb_ss_ep_comp_descriptor *) buffer; + buffer += desc->bLength; + size -= desc->bLength; + if (desc->bDescriptorType != USB_DT_SS_ENDPOINT_COMP || size < USB_DT_SS_EP_COMP_SIZE) { dev_warn(ddev, "No SuperSpeed endpoint companion for config %d " @@ -112,6 +136,7 @@ static void usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno, cfgno, inum, asnum, ep->desc.bEndpointAddress); ep->ss_ep_comp.bmAttributes = 16; } else if (usb_endpoint_xfer_isoc(&ep->desc) && + !USB_SS_SSP_ISOC_COMP(desc->bmAttributes) && USB_SS_MULT(desc->bmAttributes) > 3) { dev_warn(ddev, "Isoc endpoint has Mult of %d in " "config %d interface %d altsetting %d ep %d: " @@ -121,6 +146,12 @@ static void usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno, ep->ss_ep_comp.bmAttributes = 2; } + /* Parse a possible SuperSpeedPlus isoc ep companion descriptor */ + if (usb_endpoint_xfer_isoc(&ep->desc) && + USB_SS_SSP_ISOC_COMP(desc->bmAttributes)) + usb_parse_ssp_isoc_endpoint_companion(ddev, cfgno, inum, asnum, + ep, buffer, size); + if (usb_endpoint_xfer_isoc(&ep->desc)) max_tx = (desc->bMaxBurst + 1) * (USB_SS_MULT(desc->bmAttributes)) * @@ -191,6 +222,7 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum, if (usb_endpoint_xfer_int(d)) { i = 1; switch (to_usb_device(ddev)->speed) { + case USB_SPEED_SUPER_PLUS: case USB_SPEED_SUPER: case USB_SPEED_HIGH: /* Many device manufacturers are using full-speed @@ -274,7 +306,7 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum, } /* Parse a possible SuperSpeed endpoint companion descriptor */ - if (to_usb_device(ddev)->speed == USB_SPEED_SUPER) + if (to_usb_device(ddev)->speed >= USB_SPEED_SUPER) usb_parse_ss_endpoint_companion(ddev, cfgno, inum, asnum, endpoint, buffer, size); @@ -862,6 +894,9 @@ int usb_get_bos_descriptor(struct usb_device *dev) dev->bos->ss_id = (struct usb_ss_container_id_descriptor *)buffer; break; + case USB_PTM_CAP_TYPE: + dev->bos->ptm_cap = + (struct usb_ptm_cap_descriptor *)buffer; default: break; } diff --git a/drivers/usb/core/devices.c b/drivers/usb/core/devices.c index cffa0a0d7de2..ef04b50e6bbb 100644 --- a/drivers/usb/core/devices.c +++ b/drivers/usb/core/devices.c @@ -110,13 +110,6 @@ static const char format_endpt[] = /* E: Ad=xx(s) Atr=xx(ssss) MxPS=dddd Ivl=D?s */ "E: Ad=%02x(%c) Atr=%02x(%-4s) MxPS=%4d Ivl=%d%cs\n"; - -/* - * Need access to the driver and USB bus lists. - * extern struct list_head usb_bus_list; - * However, these will come from functions that return ptrs to each of them. - */ - /* * Wait for an connect/disconnect event to happen. We initialize * the event counter with an odd number, and each event will increment @@ -221,7 +214,7 @@ static char *usb_dump_endpoint_descriptor(int speed, char *start, char *end, break; case USB_ENDPOINT_XFER_INT: type = "Int."; - if (speed == USB_SPEED_HIGH || speed == USB_SPEED_SUPER) + if (speed == USB_SPEED_HIGH || speed >= USB_SPEED_SUPER) interval = 1 << (desc->bInterval - 1); else interval = desc->bInterval; @@ -230,7 +223,7 @@ static char *usb_dump_endpoint_descriptor(int speed, char *start, char *end, return start; } interval *= (speed == USB_SPEED_HIGH || - speed == USB_SPEED_SUPER) ? 125 : 1000; + speed >= USB_SPEED_SUPER) ? 125 : 1000; if (interval % 1000) unit = 'u'; else { @@ -322,7 +315,7 @@ static char *usb_dump_config_descriptor(char *start, char *end, if (start > end) return start; - if (speed == USB_SPEED_SUPER) + if (speed >= USB_SPEED_SUPER) mul = 8; else mul = 2; @@ -534,6 +527,8 @@ static ssize_t usb_device_dump(char __user **buffer, size_t *nbytes, speed = "480"; break; case USB_SPEED_SUPER: speed = "5000"; break; + case USB_SPEED_SUPER_PLUS: + speed = "10000"; break; default: speed = "??"; } @@ -553,7 +548,7 @@ static ssize_t usb_device_dump(char __user **buffer, size_t *nbytes, /* super/high speed reserves 80%, full/low reserves 90% */ if (usbdev->speed == USB_SPEED_HIGH || - usbdev->speed == USB_SPEED_SUPER) + usbdev->speed >= USB_SPEED_SUPER) max = 800; else max = FRAME_TIME_MAX_USECS_ALLOC; @@ -616,6 +611,7 @@ static ssize_t usb_device_read(struct file *file, char __user *buf, struct usb_bus *bus; ssize_t ret, total_written = 0; loff_t skip_bytes = *ppos; + int id; if (*ppos < 0) return -EINVAL; @@ -624,9 +620,9 @@ static ssize_t usb_device_read(struct file *file, char __user *buf, if (!access_ok(VERIFY_WRITE, buf, nbytes)) return -EFAULT; - mutex_lock(&usb_bus_list_lock); + mutex_lock(&usb_bus_idr_lock); /* print devices for all busses */ - list_for_each_entry(bus, &usb_bus_list, bus_list) { + idr_for_each_entry(&usb_bus_idr, bus, id) { /* recurse through all children of the root hub */ if (!bus_to_hcd(bus)->rh_registered) continue; @@ -635,12 +631,12 @@ static ssize_t usb_device_read(struct file *file, char __user *buf, bus->root_hub, bus, 0, 0, 0); usb_unlock_device(bus->root_hub); if (ret < 0) { - mutex_unlock(&usb_bus_list_lock); + mutex_unlock(&usb_bus_idr_lock); return ret; } total_written += ret; } - mutex_unlock(&usb_bus_list_lock); + mutex_unlock(&usb_bus_idr_lock); return total_written; } diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c index 59e7a3369084..39da1662b76f 100644 --- a/drivers/usb/core/devio.c +++ b/drivers/usb/core/devio.c @@ -50,6 +50,7 @@ #include <linux/user_namespace.h> #include <linux/scatterlist.h> #include <linux/uaccess.h> +#include <linux/dma-mapping.h> #include <asm/byteorder.h> #include <linux/moduleparam.h> @@ -69,6 +70,7 @@ struct usb_dev_state { spinlock_t lock; /* protects the async urb lists */ struct list_head async_pending; struct list_head async_completed; + struct list_head memory_list; wait_queue_head_t wait; /* wake up if a request completed */ unsigned int discsignr; struct pid *disc_pid; @@ -79,6 +81,17 @@ struct usb_dev_state { u32 disabled_bulk_eps; }; +struct usb_memory { + struct list_head memlist; + int vma_use_count; + int urb_use_count; + u32 size; + void *mem; + dma_addr_t dma_handle; + unsigned long vm_start; + struct usb_dev_state *ps; +}; + struct async { struct list_head asynclist; struct usb_dev_state *ps; @@ -89,6 +102,7 @@ struct async { void __user *userbuffer; void __user *userurb; struct urb *urb; + struct usb_memory *usbm; unsigned int mem_usage; int status; u32 secid; @@ -162,6 +176,111 @@ static int connected(struct usb_dev_state *ps) ps->dev->state != USB_STATE_NOTATTACHED); } +static void dec_usb_memory_use_count(struct usb_memory *usbm, int *count) +{ + struct usb_dev_state *ps = usbm->ps; + unsigned long flags; + + spin_lock_irqsave(&ps->lock, flags); + --*count; + if (usbm->urb_use_count == 0 && usbm->vma_use_count == 0) { + list_del(&usbm->memlist); + spin_unlock_irqrestore(&ps->lock, flags); + + usb_free_coherent(ps->dev, usbm->size, usbm->mem, + usbm->dma_handle); + usbfs_decrease_memory_usage( + usbm->size + sizeof(struct usb_memory)); + kfree(usbm); + } else { + spin_unlock_irqrestore(&ps->lock, flags); + } +} + +static void usbdev_vm_open(struct vm_area_struct *vma) +{ + struct usb_memory *usbm = vma->vm_private_data; + unsigned long flags; + + spin_lock_irqsave(&usbm->ps->lock, flags); + ++usbm->vma_use_count; + spin_unlock_irqrestore(&usbm->ps->lock, flags); +} + +static void usbdev_vm_close(struct vm_area_struct *vma) +{ + struct usb_memory *usbm = vma->vm_private_data; + + dec_usb_memory_use_count(usbm, &usbm->vma_use_count); +} + +struct vm_operations_struct usbdev_vm_ops = { + .open = usbdev_vm_open, + .close = usbdev_vm_close +}; + +static int usbdev_mmap(struct file *file, struct vm_area_struct *vma) +{ + struct usb_memory *usbm = NULL; + struct usb_dev_state *ps = file->private_data; + size_t size = vma->vm_end - vma->vm_start; + void *mem; + unsigned long flags; + dma_addr_t dma_handle; + int ret; + + ret = usbfs_increase_memory_usage(size + sizeof(struct usb_memory)); + if (ret) + goto error; + + usbm = kzalloc(sizeof(struct usb_memory), GFP_KERNEL); + if (!usbm) { + ret = -ENOMEM; + goto error_decrease_mem; + } + + mem = usb_alloc_coherent(ps->dev, size, GFP_USER, &dma_handle); + if (!mem) { + ret = -ENOMEM; + goto error_free_usbm; + } + + memset(mem, 0, size); + + usbm->mem = mem; + usbm->dma_handle = dma_handle; + usbm->size = size; + usbm->ps = ps; + usbm->vm_start = vma->vm_start; + usbm->vma_use_count = 1; + INIT_LIST_HEAD(&usbm->memlist); + + if (remap_pfn_range(vma, vma->vm_start, + virt_to_phys(usbm->mem) >> PAGE_SHIFT, + size, vma->vm_page_prot) < 0) { + dec_usb_memory_use_count(usbm, &usbm->vma_use_count); + return -EAGAIN; + } + + vma->vm_flags |= VM_IO; + vma->vm_flags |= (VM_DONTEXPAND | VM_DONTDUMP); + vma->vm_ops = &usbdev_vm_ops; + vma->vm_private_data = usbm; + + spin_lock_irqsave(&ps->lock, flags); + list_add_tail(&usbm->memlist, &ps->memory_list); + spin_unlock_irqrestore(&ps->lock, flags); + + return 0; + +error_free_usbm: + kfree(usbm); +error_decrease_mem: + usbfs_decrease_memory_usage(size + sizeof(struct usb_memory)); +error: + return ret; +} + static ssize_t usbdev_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos) { @@ -278,8 +397,13 @@ static void free_async(struct async *as) if (sg_page(&as->urb->sg[i])) kfree(sg_virt(&as->urb->sg[i])); } + kfree(as->urb->sg); - kfree(as->urb->transfer_buffer); + if (as->usbm == NULL) + kfree(as->urb->transfer_buffer); + else + dec_usb_memory_use_count(as->usbm, &as->usbm->urb_use_count); + kfree(as->urb->setup_packet); usb_free_urb(as->urb); usbfs_decrease_memory_usage(as->mem_usage); @@ -848,7 +972,7 @@ static struct usb_device *usbdev_lookup_by_devt(dev_t devt) (void *) (unsigned long) devt, match_devt); if (!dev) return NULL; - return container_of(dev, struct usb_device, dev); + return to_usb_device(dev); } /* @@ -893,6 +1017,7 @@ static int usbdev_open(struct inode *inode, struct file *file) INIT_LIST_HEAD(&ps->list); INIT_LIST_HEAD(&ps->async_pending); INIT_LIST_HEAD(&ps->async_completed); + INIT_LIST_HEAD(&ps->memory_list); init_waitqueue_head(&ps->wait); ps->discsignr = 0; ps->disc_pid = get_pid(task_pid(current)); @@ -945,6 +1070,7 @@ static int usbdev_release(struct inode *inode, struct file *file) free_async(as); as = async_getcompleted(ps); } + kfree(ps); return 0; } @@ -1266,6 +1392,31 @@ static int proc_setconfig(struct usb_dev_state *ps, void __user *arg) return status; } +static struct usb_memory * +find_memory_area(struct usb_dev_state *ps, const struct usbdevfs_urb *uurb) +{ + struct usb_memory *usbm = NULL, *iter; + unsigned long flags; + unsigned long uurb_start = (unsigned long)uurb->buffer; + + spin_lock_irqsave(&ps->lock, flags); + list_for_each_entry(iter, &ps->memory_list, memlist) { + if (uurb_start >= iter->vm_start && + uurb_start < iter->vm_start + iter->size) { + if (uurb->buffer_length > iter->vm_start + iter->size - + uurb_start) { + usbm = ERR_PTR(-EINVAL); + } else { + usbm = iter; + usbm->urb_use_count++; + } + break; + } + } + spin_unlock_irqrestore(&ps->lock, flags); + return usbm; +} + static int proc_do_submiturb(struct usb_dev_state *ps, struct usbdevfs_urb *uurb, struct usbdevfs_iso_packet_desc __user *iso_frame_desc, void __user *arg) @@ -1378,11 +1529,10 @@ static int proc_do_submiturb(struct usb_dev_state *ps, struct usbdevfs_urb *uurb number_of_packets = uurb->number_of_packets; isofrmlen = sizeof(struct usbdevfs_iso_packet_desc) * number_of_packets; - isopkt = kmalloc(isofrmlen, GFP_KERNEL); - if (!isopkt) - return -ENOMEM; - if (copy_from_user(isopkt, iso_frame_desc, isofrmlen)) { - ret = -EFAULT; + isopkt = memdup_user(iso_frame_desc, isofrmlen); + if (IS_ERR(isopkt)) { + ret = PTR_ERR(isopkt); + isopkt = NULL; goto error; } for (totlen = u = 0; u < number_of_packets; u++) { @@ -1422,6 +1572,19 @@ static int proc_do_submiturb(struct usb_dev_state *ps, struct usbdevfs_urb *uurb goto error; } + as->usbm = find_memory_area(ps, uurb); + if (IS_ERR(as->usbm)) { + ret = PTR_ERR(as->usbm); + as->usbm = NULL; + goto error; + } + + /* do not use SG buffers when memory mapped segments + * are in use + */ + if (as->usbm) + num_sgs = 0; + u += sizeof(struct async) + sizeof(struct urb) + uurb->buffer_length + num_sgs * sizeof(struct scatterlist); ret = usbfs_increase_memory_usage(u); @@ -1459,29 +1622,35 @@ static int proc_do_submiturb(struct usb_dev_state *ps, struct usbdevfs_urb *uurb totlen -= u; } } else if (uurb->buffer_length > 0) { - as->urb->transfer_buffer = kmalloc(uurb->buffer_length, - GFP_KERNEL); - if (!as->urb->transfer_buffer) { - ret = -ENOMEM; - goto error; - } + if (as->usbm) { + unsigned long uurb_start = (unsigned long)uurb->buffer; - if (!is_in) { - if (copy_from_user(as->urb->transfer_buffer, - uurb->buffer, - uurb->buffer_length)) { - ret = -EFAULT; + as->urb->transfer_buffer = as->usbm->mem + + (uurb_start - as->usbm->vm_start); + } else { + as->urb->transfer_buffer = kmalloc(uurb->buffer_length, + GFP_KERNEL); + if (!as->urb->transfer_buffer) { + ret = -ENOMEM; goto error; } - } else if (uurb->type == USBDEVFS_URB_TYPE_ISO) { - /* - * Isochronous input data may end up being - * discontiguous if some of the packets are short. - * Clear the buffer so that the gaps don't leak - * kernel data to userspace. - */ - memset(as->urb->transfer_buffer, 0, - uurb->buffer_length); + if (!is_in) { + if (copy_from_user(as->urb->transfer_buffer, + uurb->buffer, + uurb->buffer_length)) { + ret = -EFAULT; + goto error; + } + } else if (uurb->type == USBDEVFS_URB_TYPE_ISO) { + /* + * Isochronous input data may end up being + * discontiguous if some of the packets are + * short. Clear the buffer so that the gaps + * don't leak kernel data to userspace. + */ + memset(as->urb->transfer_buffer, 0, + uurb->buffer_length); + } } } as->urb->dev = ps->dev; @@ -1528,10 +1697,14 @@ static int proc_do_submiturb(struct usb_dev_state *ps, struct usbdevfs_urb *uurb isopkt = NULL; as->ps = ps; as->userurb = arg; - if (is_in && uurb->buffer_length > 0) + if (as->usbm) { + unsigned long uurb_start = (unsigned long)uurb->buffer; + + as->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; + as->urb->transfer_dma = as->usbm->dma_handle + + (uurb_start - as->usbm->vm_start); + } else if (is_in && uurb->buffer_length > 0) as->userbuffer = uurb->buffer; - else - as->userbuffer = NULL; as->signr = uurb->signr; as->ifnum = ifnum; as->pid = get_pid(task_pid(current)); @@ -1587,6 +1760,8 @@ static int proc_do_submiturb(struct usb_dev_state *ps, struct usbdevfs_urb *uurb return 0; error: + if (as && as->usbm) + dec_usb_memory_use_count(as->usbm, &as->usbm->urb_use_count); kfree(isopkt); kfree(dr); if (as) @@ -1903,7 +2078,7 @@ static int proc_releaseinterface(struct usb_dev_state *ps, void __user *arg) ret = releaseintf(ps, ifnum); if (ret < 0) return ret; - destroy_async_on_interface (ps, ifnum); + destroy_async_on_interface(ps, ifnum); return 0; } @@ -2040,7 +2215,7 @@ static int proc_get_capabilities(struct usb_dev_state *ps, void __user *arg) __u32 caps; caps = USBDEVFS_CAP_ZERO_PACKET | USBDEVFS_CAP_NO_PACKET_SIZE_LIM | - USBDEVFS_CAP_REAP_AFTER_DISCONNECT; + USBDEVFS_CAP_REAP_AFTER_DISCONNECT | USBDEVFS_CAP_MMAP; if (!ps->dev->bus->no_stop_on_short) caps |= USBDEVFS_CAP_BULK_CONTINUATION; if (ps->dev->bus->sg_tablesize) @@ -2366,6 +2541,7 @@ const struct file_operations usbdev_file_operations = { #ifdef CONFIG_COMPAT .compat_ioctl = usbdev_compat_ioctl, #endif + .mmap = usbdev_mmap, .open = usbdev_open, .release = usbdev_release, }; diff --git a/drivers/usb/core/file.c b/drivers/usb/core/file.c index ea337a718cc1..822ced9639aa 100644 --- a/drivers/usb/core/file.c +++ b/drivers/usb/core/file.c @@ -19,6 +19,7 @@ #include <linux/errno.h> #include <linux/rwsem.h> #include <linux/slab.h> +#include <linux/string.h> #include <linux/usb.h> #include "usb.h" @@ -155,7 +156,6 @@ int usb_register_dev(struct usb_interface *intf, int minor_base = class_driver->minor_base; int minor; char name[20]; - char *temp; #ifdef CONFIG_USB_DYNAMIC_MINORS /* @@ -192,14 +192,9 @@ int usb_register_dev(struct usb_interface *intf, /* create a usb class device for this usb interface */ snprintf(name, sizeof(name), class_driver->name, minor - minor_base); - temp = strrchr(name, '/'); - if (temp && (temp[1] != '\0')) - ++temp; - else - temp = name; intf->usb_dev = device_create(usb_class->class, &intf->dev, MKDEV(USB_MAJOR, minor), class_driver, - "%s", temp); + "%s", kbasename(name)); if (IS_ERR(intf->usb_dev)) { down_write(&minor_rwsem); usb_minors[minor] = NULL; diff --git a/drivers/usb/core/hcd-pci.c b/drivers/usb/core/hcd-pci.c index 9eb1cff28bd4..22a9ac25b850 100644 --- a/drivers/usb/core/hcd-pci.c +++ b/drivers/usb/core/hcd-pci.c @@ -197,7 +197,7 @@ int usb_hcd_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) * The xHCI driver has its own irq management * make sure irq setup is not touched for xhci in generic hcd code */ - if ((driver->flags & HCD_MASK) != HCD_USB3) { + if ((driver->flags & HCD_MASK) < HCD_USB3) { if (!dev->irq) { dev_err(&dev->dev, "Found HC with no IRQ. Check BIOS/PCI %s setup!\n", diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index df0e3b92533a..2ca2cef7f681 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -90,16 +90,15 @@ unsigned long usb_hcds_loaded; EXPORT_SYMBOL_GPL(usb_hcds_loaded); /* host controllers we manage */ -LIST_HEAD (usb_bus_list); -EXPORT_SYMBOL_GPL (usb_bus_list); +DEFINE_IDR (usb_bus_idr); +EXPORT_SYMBOL_GPL (usb_bus_idr); /* used when allocating bus numbers */ #define USB_MAXBUS 64 -static DECLARE_BITMAP(busmap, USB_MAXBUS); /* used when updating list of hcds */ -DEFINE_MUTEX(usb_bus_list_lock); /* exported only for usbfs */ -EXPORT_SYMBOL_GPL (usb_bus_list_lock); +DEFINE_MUTEX(usb_bus_idr_lock); /* exported only for usbfs */ +EXPORT_SYMBOL_GPL (usb_bus_idr_lock); /* used for controlling access to virtual root hubs */ static DEFINE_SPINLOCK(hcd_root_hub_lock); @@ -128,6 +127,27 @@ static inline int is_root_hub(struct usb_device *udev) #define KERNEL_REL bin2bcd(((LINUX_VERSION_CODE >> 16) & 0x0ff)) #define KERNEL_VER bin2bcd(((LINUX_VERSION_CODE >> 8) & 0x0ff)) +/* usb 3.1 root hub device descriptor */ +static const u8 usb31_rh_dev_descriptor[18] = { + 0x12, /* __u8 bLength; */ + USB_DT_DEVICE, /* __u8 bDescriptorType; Device */ + 0x10, 0x03, /* __le16 bcdUSB; v3.1 */ + + 0x09, /* __u8 bDeviceClass; HUB_CLASSCODE */ + 0x00, /* __u8 bDeviceSubClass; */ + 0x03, /* __u8 bDeviceProtocol; USB 3 hub */ + 0x09, /* __u8 bMaxPacketSize0; 2^9 = 512 Bytes */ + + 0x6b, 0x1d, /* __le16 idVendor; Linux Foundation 0x1d6b */ + 0x03, 0x00, /* __le16 idProduct; device 0x0003 */ + KERNEL_VER, KERNEL_REL, /* __le16 bcdDevice */ + + 0x03, /* __u8 iManufacturer; */ + 0x02, /* __u8 iProduct; */ + 0x01, /* __u8 iSerialNumber; */ + 0x01 /* __u8 bNumConfigurations; */ +}; + /* usb 3.0 root hub device descriptor */ static const u8 usb3_rh_dev_descriptor[18] = { 0x12, /* __u8 bLength; */ @@ -557,6 +577,8 @@ static int rh_call_control (struct usb_hcd *hcd, struct urb *urb) case USB_DT_DEVICE << 8: switch (hcd->speed) { case HCD_USB31: + bufp = usb31_rh_dev_descriptor; + break; case HCD_USB3: bufp = usb3_rh_dev_descriptor; break; @@ -645,9 +667,15 @@ nongeneric: /* non-generic request */ switch (typeReq) { case GetHubStatus: - case GetPortStatus: len = 4; break; + case GetPortStatus: + if (wValue == HUB_PORT_STATUS) + len = 4; + else + /* other port status types return 8 bytes */ + len = 8; + break; case GetHubDescriptor: len = sizeof (struct usb_hub_descriptor); break; @@ -967,8 +995,6 @@ static void usb_bus_init (struct usb_bus *bus) bus->bandwidth_int_reqs = 0; bus->bandwidth_isoc_reqs = 0; mutex_init(&bus->usb_address0_mutex); - - INIT_LIST_HEAD (&bus->bus_list); } /*-------------------------------------------------------------------------*/ @@ -988,18 +1014,14 @@ static int usb_register_bus(struct usb_bus *bus) int result = -E2BIG; int busnum; - mutex_lock(&usb_bus_list_lock); - busnum = find_next_zero_bit(busmap, USB_MAXBUS, 1); - if (busnum >= USB_MAXBUS) { - printk (KERN_ERR "%s: too many buses\n", usbcore_name); + mutex_lock(&usb_bus_idr_lock); + busnum = idr_alloc(&usb_bus_idr, bus, 1, USB_MAXBUS, GFP_KERNEL); + if (busnum < 0) { + pr_err("%s: failed to get bus number\n", usbcore_name); goto error_find_busnum; } - set_bit(busnum, busmap); bus->busnum = busnum; - - /* Add it to the local list of buses */ - list_add (&bus->bus_list, &usb_bus_list); - mutex_unlock(&usb_bus_list_lock); + mutex_unlock(&usb_bus_idr_lock); usb_notify_add_bus(bus); @@ -1008,7 +1030,7 @@ static int usb_register_bus(struct usb_bus *bus) return 0; error_find_busnum: - mutex_unlock(&usb_bus_list_lock); + mutex_unlock(&usb_bus_idr_lock); return result; } @@ -1029,13 +1051,11 @@ static void usb_deregister_bus (struct usb_bus *bus) * controller code, as well as having it call this when cleaning * itself up */ - mutex_lock(&usb_bus_list_lock); - list_del (&bus->bus_list); - mutex_unlock(&usb_bus_list_lock); + mutex_lock(&usb_bus_idr_lock); + idr_remove(&usb_bus_idr, bus->busnum); + mutex_unlock(&usb_bus_idr_lock); usb_notify_remove_bus(bus); - - clear_bit(bus->busnum, busmap); } /** @@ -1063,12 +1083,12 @@ static int register_root_hub(struct usb_hcd *hcd) set_bit (devnum, usb_dev->bus->devmap.devicemap); usb_set_device_state(usb_dev, USB_STATE_ADDRESS); - mutex_lock(&usb_bus_list_lock); + mutex_lock(&usb_bus_idr_lock); usb_dev->ep0.desc.wMaxPacketSize = cpu_to_le16(64); retval = usb_get_device_descriptor(usb_dev, USB_DT_DEVICE_SIZE); if (retval != sizeof usb_dev->descriptor) { - mutex_unlock(&usb_bus_list_lock); + mutex_unlock(&usb_bus_idr_lock); dev_dbg (parent_dev, "can't read %s device descriptor %d\n", dev_name(&usb_dev->dev), retval); return (retval < 0) ? retval : -EMSGSIZE; @@ -1078,8 +1098,8 @@ static int register_root_hub(struct usb_hcd *hcd) retval = usb_get_bos_descriptor(usb_dev); if (!retval) { usb_dev->lpm_capable = usb_device_supports_lpm(usb_dev); - } else if (usb_dev->speed == USB_SPEED_SUPER) { - mutex_unlock(&usb_bus_list_lock); + } else if (usb_dev->speed >= USB_SPEED_SUPER) { + mutex_unlock(&usb_bus_idr_lock); dev_dbg(parent_dev, "can't read %s bos descriptor %d\n", dev_name(&usb_dev->dev), retval); return retval; @@ -1099,7 +1119,7 @@ static int register_root_hub(struct usb_hcd *hcd) if (HCD_DEAD(hcd)) usb_hc_died (hcd); /* This time clean up */ } - mutex_unlock(&usb_bus_list_lock); + mutex_unlock(&usb_bus_idr_lock); return retval; } @@ -1408,7 +1428,8 @@ static void hcd_free_coherent(struct usb_bus *bus, dma_addr_t *dma_handle, void usb_hcd_unmap_urb_setup_for_dma(struct usb_hcd *hcd, struct urb *urb) { - if (urb->transfer_flags & URB_SETUP_MAP_SINGLE) + if (IS_ENABLED(CONFIG_HAS_DMA) && + (urb->transfer_flags & URB_SETUP_MAP_SINGLE)) dma_unmap_single(hcd->self.controller, urb->setup_dma, sizeof(struct usb_ctrlrequest), @@ -1440,17 +1461,20 @@ void usb_hcd_unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb) usb_hcd_unmap_urb_setup_for_dma(hcd, urb); dir = usb_urb_dir_in(urb) ? DMA_FROM_DEVICE : DMA_TO_DEVICE; - if (urb->transfer_flags & URB_DMA_MAP_SG) + if (IS_ENABLED(CONFIG_HAS_DMA) && + (urb->transfer_flags & URB_DMA_MAP_SG)) dma_unmap_sg(hcd->self.controller, urb->sg, urb->num_sgs, dir); - else if (urb->transfer_flags & URB_DMA_MAP_PAGE) + else if (IS_ENABLED(CONFIG_HAS_DMA) && + (urb->transfer_flags & URB_DMA_MAP_PAGE)) dma_unmap_page(hcd->self.controller, urb->transfer_dma, urb->transfer_buffer_length, dir); - else if (urb->transfer_flags & URB_DMA_MAP_SINGLE) + else if (IS_ENABLED(CONFIG_HAS_DMA) && + (urb->transfer_flags & URB_DMA_MAP_SINGLE)) dma_unmap_single(hcd->self.controller, urb->transfer_dma, urb->transfer_buffer_length, @@ -1492,7 +1516,7 @@ int usb_hcd_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb, if (usb_endpoint_xfer_control(&urb->ep->desc)) { if (hcd->self.uses_pio_for_control) return ret; - if (hcd->self.uses_dma) { + if (IS_ENABLED(CONFIG_HAS_DMA) && hcd->self.uses_dma) { urb->setup_dma = dma_map_single( hcd->self.controller, urb->setup_packet, @@ -1518,7 +1542,7 @@ int usb_hcd_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb, dir = usb_urb_dir_in(urb) ? DMA_FROM_DEVICE : DMA_TO_DEVICE; if (urb->transfer_buffer_length != 0 && !(urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)) { - if (hcd->self.uses_dma) { + if (IS_ENABLED(CONFIG_HAS_DMA) && hcd->self.uses_dma) { if (urb->num_sgs) { int n; @@ -2112,7 +2136,7 @@ int usb_alloc_streams(struct usb_interface *interface, hcd = bus_to_hcd(dev->bus); if (!hcd->driver->alloc_streams || !hcd->driver->free_streams) return -EINVAL; - if (dev->speed != USB_SPEED_SUPER) + if (dev->speed < USB_SPEED_SUPER) return -EINVAL; if (dev->state < USB_STATE_CONFIGURED) return -ENODEV; @@ -2160,7 +2184,7 @@ int usb_free_streams(struct usb_interface *interface, dev = interface_to_usbdev(interface); hcd = bus_to_hcd(dev->bus); - if (dev->speed != USB_SPEED_SUPER) + if (dev->speed < USB_SPEED_SUPER) return -EINVAL; /* Double-free is not allowed */ @@ -2208,7 +2232,7 @@ int usb_hcd_get_frame_number (struct usb_device *udev) int hcd_bus_suspend(struct usb_device *rhdev, pm_message_t msg) { - struct usb_hcd *hcd = container_of(rhdev->bus, struct usb_hcd, self); + struct usb_hcd *hcd = bus_to_hcd(rhdev->bus); int status; int old_state = hcd->state; @@ -2257,7 +2281,7 @@ int hcd_bus_suspend(struct usb_device *rhdev, pm_message_t msg) int hcd_bus_resume(struct usb_device *rhdev, pm_message_t msg) { - struct usb_hcd *hcd = container_of(rhdev->bus, struct usb_hcd, self); + struct usb_hcd *hcd = bus_to_hcd(rhdev->bus); int status; int old_state = hcd->state; @@ -2371,7 +2395,7 @@ int usb_bus_start_enum(struct usb_bus *bus, unsigned port_num) * boards with root hubs hooked up to internal devices (instead of * just the OTG port) may need more attention to resetting... */ - hcd = container_of (bus, struct usb_hcd, self); + hcd = bus_to_hcd(bus); if (port_num && hcd->driver->start_port_reset) status = hcd->driver->start_port_reset(hcd, port_num); @@ -2778,9 +2802,11 @@ int usb_add_hcd(struct usb_hcd *hcd, rhdev->speed = USB_SPEED_WIRELESS; break; case HCD_USB3: - case HCD_USB31: rhdev->speed = USB_SPEED_SUPER; break; + case HCD_USB31: + rhdev->speed = USB_SPEED_SUPER_PLUS; + break; default: retval = -EINVAL; goto err_set_rh_speed; @@ -2863,9 +2889,9 @@ error_create_attr_group: #ifdef CONFIG_PM cancel_work_sync(&hcd->wakeup_work); #endif - mutex_lock(&usb_bus_list_lock); + mutex_lock(&usb_bus_idr_lock); usb_disconnect(&rhdev); /* Sets rhdev to NULL */ - mutex_unlock(&usb_b |