/*
* OHCI HCD (Host Controller Driver) for USB.
- *
+ *
* (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
* (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
- *
+ *
* This file is licenced under the GPL.
*/
/*-------------------------------------------------------------------------*/
/*
- * There's basically three types of memory:
+ * OHCI deals with three types of memory:
* - data used only by the HCD ... kmalloc is fine
* - async and periodic schedules, shared by HC and HCD ... these
* need to use dma_pool or dma_alloc_coherent
* - driver buffers, read/written by HC ... the hcd glue or the
* device driver provides us with dma addresses
*
- * There's also PCI "register" data, which is memory mapped.
- * No memory seen by this driver is pagable.
+ * There's also "register" data, which is memory mapped.
+ * No memory seen by this driver (or any HCD) may be paged out.
*/
/*-------------------------------------------------------------------------*/
-static struct usb_hcd *ohci_hcd_alloc (void)
+static void ohci_hcd_init (struct ohci_hcd *ohci)
{
- struct ohci_hcd *ohci;
-
- ohci = (struct ohci_hcd *) kmalloc (sizeof *ohci, GFP_KERNEL);
- if (ohci != 0) {
- memset (ohci, 0, sizeof (struct ohci_hcd));
- ohci->hcd.product_desc = "OHCI Host Controller";
- ohci->next_statechange = jiffies;
- spin_lock_init (&ohci->lock);
- INIT_LIST_HEAD (&ohci->pending);
- INIT_WORK (&ohci->rh_resume, ohci_rh_resume, &ohci->hcd);
- return &ohci->hcd;
- }
- return NULL;
+ ohci->next_statechange = jiffies;
+ spin_lock_init (&ohci->lock);
+ INIT_LIST_HEAD (&ohci->pending);
}
/*-------------------------------------------------------------------------*/
static int ohci_mem_init (struct ohci_hcd *ohci)
{
- ohci->td_cache = dma_pool_create ("ohci_td", ohci->hcd.self.controller,
+ ohci->td_cache = dma_pool_create ("ohci_td",
+ ohci_to_hcd(ohci)->self.controller,
sizeof (struct td),
32 /* byte alignment */,
0 /* no page-crossing issues */);
if (!ohci->td_cache)
return -ENOMEM;
- ohci->ed_cache = dma_pool_create ("ohci_ed", ohci->hcd.self.controller,
+ ohci->ed_cache = dma_pool_create ("ohci_ed",
+ ohci_to_hcd(ohci)->self.controller,
sizeof (struct ed),
16 /* byte alignment */,
0 /* no page-crossing issues */);
/* TDs ... */
static struct td *
-td_alloc (struct ohci_hcd *hc, int mem_flags)
+td_alloc (struct ohci_hcd *hc, gfp_t mem_flags)
{
dma_addr_t dma;
struct td *td;
/* EDs ... */
static struct ed *
-ed_alloc (struct ohci_hcd *hc, int mem_flags)
+ed_alloc (struct ohci_hcd *hc, gfp_t mem_flags)
{
dma_addr_t dma;
struct ed *ed;