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-rw-r--r--drivers/usb/core/buffer.c12
-rw-r--r--drivers/usb/core/hcd.c80
-rw-r--r--drivers/usb/core/usb.c18
-rw-r--r--include/linux/usb.h1
-rw-r--r--include/linux/usb/hcd.h3
5 files changed, 64 insertions, 50 deletions
diff --git a/drivers/usb/core/buffer.c b/drivers/usb/core/buffer.c
index b9bf6e2eb6fe..b64568cf572c 100644
--- a/drivers/usb/core/buffer.c
+++ b/drivers/usb/core/buffer.c
@@ -66,7 +66,7 @@ int hcd_buffer_create(struct usb_hcd *hcd)
int i, size;
if (!IS_ENABLED(CONFIG_HAS_DMA) ||
- (!hcd->self.controller->dma_mask &&
+ (!is_device_dma_capable(hcd->self.sysdev) &&
!(hcd->driver->flags & HCD_LOCAL_MEM)))
return 0;
@@ -75,7 +75,7 @@ int hcd_buffer_create(struct usb_hcd *hcd)
if (!size)
continue;
snprintf(name, sizeof(name), "buffer-%d", size);
- hcd->pool[i] = dma_pool_create(name, hcd->self.controller,
+ hcd->pool[i] = dma_pool_create(name, hcd->self.sysdev,
size, size, 0);
if (!hcd->pool[i]) {
hcd_buffer_destroy(hcd);
@@ -130,7 +130,7 @@ void *hcd_buffer_alloc(
/* some USB hosts just use PIO */
if (!IS_ENABLED(CONFIG_HAS_DMA) ||
- (!bus->controller->dma_mask &&
+ (!is_device_dma_capable(bus->sysdev) &&
!(hcd->driver->flags & HCD_LOCAL_MEM))) {
*dma = ~(dma_addr_t) 0;
return kmalloc(size, mem_flags);
@@ -140,7 +140,7 @@ void *hcd_buffer_alloc(
if (size <= pool_max[i])
return dma_pool_alloc(hcd->pool[i], mem_flags, dma);
}
- return dma_alloc_coherent(hcd->self.controller, size, dma, mem_flags);
+ return dma_alloc_coherent(hcd->self.sysdev, size, dma, mem_flags);
}
void hcd_buffer_free(
@@ -157,7 +157,7 @@ void hcd_buffer_free(
return;
if (!IS_ENABLED(CONFIG_HAS_DMA) ||
- (!bus->controller->dma_mask &&
+ (!is_device_dma_capable(bus->sysdev) &&
!(hcd->driver->flags & HCD_LOCAL_MEM))) {
kfree(addr);
return;
@@ -169,5 +169,5 @@ void hcd_buffer_free(
return;
}
}
- dma_free_coherent(hcd->self.controller, size, addr, dma);
+ dma_free_coherent(hcd->self.sysdev, size, addr, dma);
}
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 612fab6e54fb..2342c1ffd900 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -1073,6 +1073,7 @@ static void usb_deregister_bus (struct usb_bus *bus)
static int register_root_hub(struct usb_hcd *hcd)
{
struct device *parent_dev = hcd->self.controller;
+ struct device *sysdev = hcd->self.sysdev;
struct usb_device *usb_dev = hcd->self.root_hub;
const int devnum = 1;
int retval;
@@ -1119,7 +1120,7 @@ static int register_root_hub(struct usb_hcd *hcd)
/* Did the HC die before the root hub was registered? */
if (HCD_DEAD(hcd))
usb_hc_died (hcd); /* This time clean up */
- usb_dev->dev.of_node = parent_dev->of_node;
+ usb_dev->dev.of_node = sysdev->of_node;
}
mutex_unlock(&usb_bus_idr_lock);
@@ -1465,19 +1466,19 @@ void usb_hcd_unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb)
dir = usb_urb_dir_in(urb) ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
if (IS_ENABLED(CONFIG_HAS_DMA) &&
(urb->transfer_flags & URB_DMA_MAP_SG))
- dma_unmap_sg(hcd->self.controller,
+ dma_unmap_sg(hcd->self.sysdev,
urb->sg,
urb->num_sgs,
dir);
else if (IS_ENABLED(CONFIG_HAS_DMA) &&
(urb->transfer_flags & URB_DMA_MAP_PAGE))
- dma_unmap_page(hcd->self.controller,
+ dma_unmap_page(hcd->self.sysdev,
urb->transfer_dma,
urb->transfer_buffer_length,
dir);
else if (IS_ENABLED(CONFIG_HAS_DMA) &&
(urb->transfer_flags & URB_DMA_MAP_SINGLE))
- dma_unmap_single(hcd->self.controller,
+ dma_unmap_single(hcd->self.sysdev,
urb->transfer_dma,
urb->transfer_buffer_length,
dir);
@@ -1520,11 +1521,11 @@ int usb_hcd_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb,
return ret;
if (IS_ENABLED(CONFIG_HAS_DMA) && hcd->self.uses_dma) {
urb->setup_dma = dma_map_single(
- hcd->self.controller,
+ hcd->self.sysdev,
urb->setup_packet,
sizeof(struct usb_ctrlrequest),
DMA_TO_DEVICE);
- if (dma_mapping_error(hcd->self.controller,
+ if (dma_mapping_error(hcd->self.sysdev,
urb->setup_dma))
return -EAGAIN;
urb->transfer_flags |= URB_SETUP_MAP_SINGLE;
@@ -1555,7 +1556,7 @@ int usb_hcd_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb,
}
n = dma_map_sg(
- hcd->self.controller,
+ hcd->self.sysdev,
urb->sg,
urb->num_sgs,
dir);
@@ -1570,12 +1571,12 @@ int usb_hcd_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb,
} else if (urb->sg) {
struct scatterlist *sg = urb->sg;
urb->transfer_dma = dma_map_page(
- hcd->self.controller,
+ hcd->self.sysdev,
sg_page(sg),
sg->offset,
urb->transfer_buffer_length,
dir);
- if (dma_mapping_error(hcd->self.controller,
+ if (dma_mapping_error(hcd->self.sysdev,
urb->transfer_dma))
ret = -EAGAIN;
else
@@ -1585,11 +1586,11 @@ int usb_hcd_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb,
ret = -EAGAIN;
} else {
urb->transfer_dma = dma_map_single(
- hcd->self.controller,
+ hcd->self.sysdev,
urb->transfer_buffer,
urb->transfer_buffer_length,
dir);
- if (dma_mapping_error(hcd->self.controller,
+ if (dma_mapping_error(hcd->self.sysdev,
urb->transfer_dma))
ret = -EAGAIN;
else
@@ -2495,24 +2496,8 @@ static void init_giveback_urb_bh(struct giveback_urb_bh *bh)
tasklet_init(&bh->bh, usb_giveback_urb_bh, (unsigned long)bh);
}
-/**
- * usb_create_shared_hcd - create and initialize an HCD structure
- * @driver: HC driver that will use this hcd
- * @dev: device for this HC, stored in hcd->self.controller
- * @bus_name: value to store in hcd->self.bus_name
- * @primary_hcd: a pointer to the usb_hcd structure that is sharing the
- * PCI device. Only allocate certain resources for the primary HCD
- * Context: !in_interrupt()
- *
- * Allocate a struct usb_hcd, with extra space at the end for the
- * HC driver's private data. Initialize the generic members of the
- * hcd structure.
- *
- * Return: On success, a pointer to the created and initialized HCD structure.
- * On failure (e.g. if memory is unavailable), %NULL.
- */
-struct usb_hcd *usb_create_shared_hcd(const struct hc_driver *driver,
- struct device *dev, const char *bus_name,
+struct usb_hcd *__usb_create_hcd(const struct hc_driver *driver,
+ struct device *sysdev, struct device *dev, const char *bus_name,
struct usb_hcd *primary_hcd)
{
struct usb_hcd *hcd;
@@ -2553,8 +2538,9 @@ struct usb_hcd *usb_create_shared_hcd(const struct hc_driver *driver,
usb_bus_init(&hcd->self);
hcd->self.controller = dev;
+ hcd->self.sysdev = sysdev;
hcd->self.bus_name = bus_name;
- hcd->self.uses_dma = (dev->dma_mask != NULL);
+ hcd->self.uses_dma = (sysdev->dma_mask != NULL);
init_timer(&hcd->rh_timer);
hcd->rh_timer.function = rh_timer_func;
@@ -2569,6 +2555,30 @@ struct usb_hcd *usb_create_shared_hcd(const struct hc_driver *driver,
"USB Host Controller";
return hcd;
}
+EXPORT_SYMBOL_GPL(__usb_create_hcd);
+
+/**
+ * usb_create_shared_hcd - create and initialize an HCD structure
+ * @driver: HC driver that will use this hcd
+ * @dev: device for this HC, stored in hcd->self.controller
+ * @bus_name: value to store in hcd->self.bus_name
+ * @primary_hcd: a pointer to the usb_hcd structure that is sharing the
+ * PCI device. Only allocate certain resources for the primary HCD
+ * Context: !in_interrupt()
+ *
+ * Allocate a struct usb_hcd, with extra space at the end for the
+ * HC driver's private data. Initialize the generic members of the
+ * hcd structure.
+ *
+ * Return: On success, a pointer to the created and initialized HCD structure.
+ * On failure (e.g. if memory is unavailable), %NULL.
+ */
+struct usb_hcd *usb_create_shared_hcd(const struct hc_driver *driver,
+ struct device *dev, const char *bus_name,
+ struct usb_hcd *primary_hcd)
+{
+ return __usb_create_hcd(driver, dev, dev, bus_name, primary_hcd);
+}
EXPORT_SYMBOL_GPL(usb_create_shared_hcd);
/**
@@ -2588,7 +2598,7 @@ EXPORT_SYMBOL_GPL(usb_create_shared_hcd);
struct usb_hcd *usb_create_hcd(const struct hc_driver *driver,
struct device *dev, const char *bus_name)
{
- return usb_create_shared_hcd(driver, dev, bus_name, NULL);
+ return __usb_create_hcd(driver, dev, dev, bus_name, NULL);
}
EXPORT_SYMBOL_GPL(usb_create_hcd);
@@ -2715,7 +2725,7 @@ int usb_add_hcd(struct usb_hcd *hcd,
struct usb_device *rhdev;
if (IS_ENABLED(CONFIG_USB_PHY) && !hcd->usb_phy) {
- struct usb_phy *phy = usb_get_phy_dev(hcd->self.controller, 0);
+ struct usb_phy *phy = usb_get_phy_dev(hcd->self.sysdev, 0);
if (IS_ERR(phy)) {
retval = PTR_ERR(phy);
@@ -2733,7 +2743,7 @@ int usb_add_hcd(struct usb_hcd *hcd,
}
if (IS_ENABLED(CONFIG_GENERIC_PHY) && !hcd->phy) {
- struct phy *phy = phy_get(hcd->self.controller, "usb");
+ struct phy *phy = phy_get(hcd->self.sysdev, "usb");
if (IS_ERR(phy)) {
retval = PTR_ERR(phy);
@@ -2781,7 +2791,7 @@ int usb_add_hcd(struct usb_hcd *hcd,
*/
retval = hcd_buffer_create(hcd);
if (retval != 0) {
- dev_dbg(hcd->self.controller, "pool alloc failed\n");
+ dev_dbg(hcd->self.sysdev, "pool alloc failed\n");
goto err_create_buf;
}
@@ -2791,7 +2801,7 @@ int usb_add_hcd(struct usb_hcd *hcd,
rhdev = usb_alloc_dev(NULL, &hcd->self, 0);
if (rhdev == NULL) {
- dev_err(hcd->self.controller, "unable to allocate root hub\n");
+ dev_err(hcd->self.sysdev, "unable to allocate root hub\n");
retval = -ENOMEM;
goto err_allocate_root_hub;
}
diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index a2ccc69fb45c..4cd6e0e4b66d 100644
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -453,9 +453,9 @@ struct usb_device *usb_alloc_dev(struct usb_device *parent,
* Note: calling dma_set_mask() on a USB device would set the
* mask for the entire HCD, so don't do that.
*/
- dev->dev.dma_mask = bus->controller->dma_mask;
- dev->dev.dma_pfn_offset = bus->controller->dma_pfn_offset;
- set_dev_node(&dev->dev, dev_to_node(bus->controller));
+ dev->dev.dma_mask = bus->sysdev->dma_mask;
+ dev->dev.dma_pfn_offset = bus->sysdev->dma_pfn_offset;
+ set_dev_node(&dev->dev, dev_to_node(bus->sysdev));
dev->state = USB_STATE_ATTACHED;
dev->lpm_disable_count = 1;
atomic_set(&dev->urbnum, 0);
@@ -803,7 +803,7 @@ struct urb *usb_buffer_map(struct urb *urb)
if (!urb
|| !urb->dev
|| !(bus = urb->dev->bus)
- || !(controller = bus->controller))
+ || !(controller = bus->sysdev))
return NULL;
if (controller->dma_mask) {
@@ -841,7 +841,7 @@ void usb_buffer_dmasync(struct urb *urb)
|| !(urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)
|| !urb->dev
|| !(bus = urb->dev->bus)
- || !(controller = bus->controller))
+ || !(controller = bus->sysdev))
return;
if (controller->dma_mask) {
@@ -875,7 +875,7 @@ void usb_buffer_unmap(struct urb *urb)
|| !(urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)
|| !urb->dev
|| !(bus = urb->dev->bus)
- || !(controller = bus->controller))
+ || !(controller = bus->sysdev))
return;
if (controller->dma_mask) {
@@ -925,7 +925,7 @@ int usb_buffer_map_sg(const struct usb_device *dev, int is_in,
if (!dev
|| !(bus = dev->bus)
- || !(controller = bus->controller)
+ || !(controller = bus->sysdev)
|| !controller->dma_mask)
return -EINVAL;
@@ -961,7 +961,7 @@ void usb_buffer_dmasync_sg(const struct usb_device *dev, int is_in,
if (!dev
|| !(bus = dev->bus)
- || !(controller = bus->controller)
+ || !(controller = bus->sysdev)
|| !controller->dma_mask)
return;
@@ -989,7 +989,7 @@ void usb_buffer_unmap_sg(const struct usb_device *dev, int is_in,
if (!dev
|| !(bus = dev->bus)
- || !(controller = bus->controller)
+ || !(controller = bus->sysdev)
|| !controller->dma_mask)
return;
diff --git a/include/linux/usb.h b/include/linux/usb.h
index 7e68259360de..148752640693 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -354,6 +354,7 @@ struct usb_devmap {
*/
struct usb_bus {
struct device *controller; /* host/master side hardware */
+ struct device *sysdev; /* as seen from firmware or bus */
int busnum; /* Bus number (in order of reg) */
const char *bus_name; /* stable id (PCI slot_name etc) */
u8 uses_dma; /* Does the host controller use DMA? */
diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h
index dff130151235..a469999a106d 100644
--- a/include/linux/usb/hcd.h
+++ b/include/linux/usb/hcd.h
@@ -437,6 +437,9 @@ extern int usb_hcd_alloc_bandwidth(struct usb_device *udev,
struct usb_host_interface *new_alt);
extern int usb_hcd_get_frame_number(struct usb_device *udev);
+struct usb_hcd *__usb_create_hcd(const struct hc_driver *driver,
+ struct device *sysdev, struct device *dev, const char *bus_name,
+ struct usb_hcd *primary_hcd);
extern struct usb_hcd *usb_create_hcd(const struct hc_driver *driver,
struct device *dev, const char *bus_name);
extern struct usb_hcd *usb_create_shared_hcd(const struct hc_driver *driver,
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-23 23:47:41 +0000