/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1992-1997, 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
*/
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/sched.h>
#include <asm/sn/types.h>
#include <asm/sn/sgi.h>
#include <asm/sn/driver.h>
#include <asm/param.h>
#include <asm/sn/pio.h>
#include <asm/sn/xtalk/xwidget.h>
#include <asm/sn/io.h>
#include <asm/sn/sn_private.h>
#include <asm/sn/addrs.h>
#include <asm/sn/hcl.h>
#include <asm/sn/hcl_util.h>
#include <asm/sn/intr.h>
#include <asm/sn/xtalk/xtalkaddrs.h>
#include <asm/sn/klconfig.h>
#include <asm/sn/sn_cpuid.h>
extern xtalk_provider_t hub_provider;
static int force_fire_and_forget = 1;
static int ignore_conveyor_override;
/*
* Implementation of hub iobus operations.
*
* Hub provides a crosstalk "iobus" on IP27 systems. These routines
* provide a platform-specific implementation of xtalk used by all xtalk
* cards on IP27 systems.
*
* Called from corresponding xtalk_* routines.
*/
/* PIO MANAGEMENT */
/* For mapping system virtual address space to xtalk space on a specified widget */
/*
* Setup pio structures needed for a particular hub.
*/
static void
hub_pio_init(vertex_hdl_t hubv)
{
xwidgetnum_t widget;
hubinfo_t hubinfo;
nasid_t nasid;
int bigwin;
hub_piomap_t hub_piomap;
hubinfo_get(hubv, &hubinfo);
nasid = hubinfo->h_nasid;
/* Initialize small window piomaps for this hub */
for (widget=0; widget <= HUB_WIDGET_ID_MAX; widget++) {
hub_piomap = hubinfo_swin_piomap_get(hubinfo, (int)widget);
hub_piomap->hpio_xtalk_info.xp_target = widget;
hub_piomap->hpio_xtalk_info.xp_xtalk_addr = 0;
hub_piomap->hpio_xtalk_info.xp_mapsz = SWIN_SIZE;
hub_piomap->hpio_xtalk_info.xp_kvaddr = (caddr_t)NODE_SWIN_BASE(nasid, widget);
hub_piomap->hpio_hub = hubv;
hub_piomap->hpio_flags = HUB_PIOMAP_IS_VALID;
}
/* Initialize big window piomaps for this hub */
for (bigwin=0; bigwin < HUB_NUM_BIG_WINDOW; bigwin++) {
hub_piomap = hubinfo_bwin_piomap_get(hubinfo, bigwin);
hub_piomap->hpio_xtalk_info.xp_mapsz = BWIN_SIZE;
hub_piomap->hpio_hub = hubv;
hub_piomap->hpio_holdcnt = 0;
hub_piomap->hpio_flags = HUB_PIOMAP_IS_BIGWINDOW;
IIO_ITTE_DISABLE(nasid, bigwin);
}
hub_set_piomode(nasid, HUB_PIO_CONVEYOR);
spin_lock_init(&hubinfo->h_bwlock);
init_waitqueue_head(&hubinfo->h_bwwait);
}
/*
* Create a caddr_t-to-xtalk_addr mapping.
*
* Use a small window if possible (that's the usual case), but
* manage big windows if needed. Big window mappings can be
* either FIXED or UNFIXED -- we keep at least 1 big window available
* for UNFIXED mappings.
*
* Returns an opaque pointer-sized type which can be passed to
* other hub_pio_* routines on success, or NULL if the request
* cannot be satisfied.
*/
/* ARGSUSED */
hub_piomap_t
hub_piomap_alloc(vertex_hdl_t dev, /* set up mapping for this device */
device_desc_t dev_desc, /* device descriptor */
iopaddr_t xtalk_addr, /* map for this xtalk_addr range */
size_t byte_count,
size_t byte_count_max, /* maximum size of a mapping */
unsigned flags) /* defined in sys/pio.h */
{
xwidget_info_t widget_info = xwidget_info_get(dev);
xwidgetnum_t widget = xwidget_info_id_get(widget_info);
vertex_hdl_t hubv = xwidget_info_master_get(widget_info);
hubinfo_t hubinfo;
hub_piomap_t bw_piomap;
int bigwin, free_bw_index;
nasid_t nasid;
volatile hubreg_t junk;
caddr_t kvaddr;
#ifdef PIOMAP_UNC_ACC_SPACE
uint64_t addr;
#endif
/* sanity check */
if (byte_count_max > byte_count)
return NULL;
hubinfo_get(hubv, &hubinfo);
/* If xtalk_addr range is mapped by a small window, we don't have
* to do much
*/
if (xtalk_addr + byte_count <= SWIN_SIZE) {
hub_piomap_t piomap;
piomap = hubinfo_swin_piomap_get(hubinfo, (int)widget);
#ifdef PIOMAP_UNC_ACC_SPACE
if (flags & PIOMAP_UNC_ACC) {
addr = (uint64_t)piomap->hpio_xtalk_info.xp_kvaddr;
addr |= PIOMAP_UNC_ACC_SPACE;
piomap->hpio_xtalk_info.xp_kvaddr = (caddr_t)addr;
}
#endif
return piomap;
}
/* We need to use a big window mapping. */
/*
* TBD: Allow requests that would consume multiple big windows --
* split the request up and use multiple mapping entries.
* For now, reject requests that span big windows.
*/
if ((xtalk_addr % BWIN_SIZE) + byte_count > BWIN_SIZE)
return NULL;
/* Round xtalk address down for big window alignement */
xtalk_addr = xtalk_addr & ~(BWIN_SIZE-1);
/*
* Check to see if an existing big window mapping will suffice.
*/
tryagain:
free_bw_index = -1;
spin_lock(&hubinfo->h_bwlock);
for (bigwin=0; bigwin < HUB_NUM_BIG_WINDOW; bigwin++) {
bw_piomap = hubinfo_bwin_piomap_get(hubinfo, bigwin);
/* If mapping is not valid, skip it */
if (!(bw_piomap->hpio_flags & HUB_PIOMAP_IS_VALID)) {
free_bw_index = bigwin;
continue;
}
/*
* If mapping is UNFIXED, skip it. We don't allow sharing
* of UNFIXED mappings, because this would allow starvation.
*/
if (!(bw_piomap->hpio_flags & HUB_PIOMAP_IS_FIXED))
continue;
if ( xtalk_addr == bw_piomap->hpio_xtalk_info.xp_xtalk_addr &&
widget == bw_piomap->hpio_xtalk_info.xp_target) {
bw_piomap->hpio_holdcnt++;
spin_unlock(&hubinfo->h_bwlock);
return bw_piomap;
}
}
/*
* None of the existing big window mappings will work for us --
* we need to establish a new mapping.
*/
/* Insure that we don't consume all big windows with FIXED mappings */
if (flags & PIOMAP_FIXED) {
if (hubinfo->h_num_big_window_fixed < HUB_NUM_BIG_WINDOW-1) {
ASSERT(free_bw_index >= 0);
hubinfo->h_num_big_window_fixed++;
} else {
bw_piomap = NULL;
goto done;
}
} else /* PIOMAP_UNFIXED */ {
if (free_bw_index < 0) {
if (flags & PIOMAP_NOSLEEP) {
bw_piomap = NULL;
goto done;
} else {
DECLARE_WAITQUEUE(wait, current);
spin_unlock(&hubinfo->h_bwlock);
set_current_state(TASK_UNINTERRUPTIBLE);
add_wait_queue_exclusive(&hubinfo->h_bwwait, &wait);
schedule();
remove_wait_queue(&hubinfo->h_bwwait, &wait);
goto tryagain;
}
}
}
/* OK! Allocate big window free_bw_index for this mapping. */
/*
* The code below does a PIO write to setup an ITTE entry.
* We need to prevent other CPUs from seeing our updated memory
* shadow of the ITTE (in the piomap) until the ITTE entry is
* actually set up; otherwise, another CPU might attempt a PIO
* prematurely.
*
* Also, the only way we can know that an entry has been received
* by the hub and can be used by future PIO reads/writes is by
* reading back the ITTE entry after writing it.
*
* For these two reasons, we PIO read back the ITTE entry after
* we write it.
*/
nasid = hubinfo->h_nasid;
IIO_ITTE_PUT(nasid, free_bw_index, HUB_PIO_MAP_TO_MEM, widget, xtalk_addr);
junk = HUB_L(IIO_ITTE_GET(nasid, free_bw_index));
bw_piomap = hubinfo_bwin_piomap_get(hubinfo, free_bw_index);
bw_piomap->hpio_xtalk_info.xp_dev = dev;
bw_piomap->hpio_xtalk_info.xp_target = widget;
bw_piomap->hpio_xtalk_info.xp_xtalk_addr = xtalk_addr;
kvaddr = (caddr_t)NODE_BWIN_BASE(nasid, free_bw_index);
#ifdef PIOMAP_UNC_ACC_SPACE
if (flags & PIOMAP_UNC_ACC) {
addr = (uint64_t)kvaddr;
addr |= PIOMAP_UNC_ACC_SPACE;
kvaddr = (caddr_t)addr;
}
#endif
bw_piomap->hpio_xtalk_info.xp_kvaddr = kvaddr;
bw_piomap->hpio_holdcnt++;
bw_piomap->hpio_bigwin_num = free_bw_index;
if (flags & PIOMAP_FIXED)
bw_piomap->hpio_flags |= HUB_PIOMAP_IS_VALID | HUB_PIOMAP_IS_FIXED;
else
bw_piomap->hpio_flags |= HUB_PIOMAP_IS_VALID;
done:
spin_unlock(&hubinfo->h_bwlock);
return bw_piomap;
}
/*
* hub_piomap_free destroys a caddr_t-to-xtalk pio mapping and frees
* any associated mapping resources.
*
* If this * piomap was handled with a small window, or if it was handled
* in a big window that's still in use by someone else, then there's
* nothing to do. On the other hand, if this mapping was handled
* with a big window, AND if we were the final user of that mapping,
* then destroy the mapping.
*/
void
hub_piomap_free(hub_piomap_t hub_piomap)
{
vertex_hdl_t hubv;
hubinfo_t hubinfo;
nasid_t nasid;
/*
* Small windows are permanently mapped to corresponding widgets,
* so there're no resources to free.
*/
if (!(hub_piomap->hpio_flags & HUB_PIOMAP_IS_BIGWINDOW))
return;
ASSERT(hub_piomap->hpio_flags & HUB_PIOMAP_IS_VALID);
ASSERT(hub_piomap->hpio_holdcnt > 0);
hubv = hub_piomap->hpio_hub;
hubinfo_get(hubv, &hubinfo);
nasid = hubinfo->h_nasid;
spin_lock(&hubinfo->h_bwlock);
/*
* If this is the last hold on this mapping, free it.
*/
if (--hub_piomap->hpio_holdcnt == 0) {
IIO_ITTE_DISABLE(nasid, hub_piomap->hpio_bigwin_num );
if (hub_piomap->hpio_flags & HUB_PIOMAP_IS_FIXED) {
hub_piomap->hpio_flags &= ~(HUB_PIOMAP_IS_VALID | HUB_PIOMAP_IS_FIXED);
hubinfo->h_num_big_window_fixed--;
ASSERT(hubinfo->h_num_big_window_fixed >= 0);
} else
hub_piomap->hpio_flags &= ~HUB_PIOMAP_IS_VALID;
wake_up(&hubinfo->h_bwwait);
}
spin_unlock(&hubinfo->h_bwlock);
}
/*
* Establish a mapping to a given xtalk address range using the resources
* allocated earlier.
*/
caddr_t
hub_piomap_addr(hub_piomap_t hub_piomap, /* mapping resources */
iopaddr_t xtalk_addr, /* map for this xtalk address */
size_t byte_count) /* map this many bytes */
{
/* Verify that range can be mapped using the specified piomap */
if (xtalk_addr < hub_piomap->hpio_xtalk_info.xp_xtalk_addr)
return 0;
if (xtalk_addr + byte_count >
( hub_piomap->hpio_xtalk_info.xp_xtalk_addr +
hub_piomap->hpio_xtalk_info.xp_mapsz))
return 0;
if (hub_piomap->hpio_flags & HUB_PIOMAP_IS_VALID)
return hub_piomap->hpio_xtalk_info.xp_kvaddr +
(xtalk_addr % hub_piomap->hpio_xtalk_info.xp_mapsz);
else
return 0;
}
/*
* Driver indicates that it's done with PIO's from an earlier piomap_addr.
*/
/* ARGSUSED */
void
hub_piomap_done(hub_piomap_t hub_piomap) /* done with these mapping resources */
{
/* Nothing to do */
}
/*
* For translations that require no mapping resources, supply a kernel virtual
* address that maps to the specified xtalk address range.
*/
/* ARGSUSED */
caddr_t
hub_piotrans_addr( vertex_hdl_t dev, /* translate to this device */
device_desc_t dev_desc, /* device descriptor */
iopaddr_t xtalk_addr, /* Crosstalk address */
size_t byte_count, /* map this many bytes */
unsigned flags) /* (currently unused) */
{
xwidget_info_t widget_info = xwidget_info_get(dev);
xwidgetnum_t widget = xwidget_info_id_get(widget_info);
vertex_hdl_t hubv = xwidget_info_master_get(widget_info);
hub_piomap_t hub_piomap;
hubinfo_t hubinfo;
caddr_t addr;
hubinfo_get(hubv, &hubinfo);
if (xtalk_addr + byte_count <= SWIN_SIZE) {
hub_piomap = hubinfo_swin_piomap_get(hubinfo, (int)widget);
addr = hub_piomap_addr(hub_piomap, xtalk_addr, byte_count);
#ifdef PIOMAP_UNC_ACC_SPACE
if (flags & PIOMAP_UNC_ACC) {
uint64_t iaddr;
iaddr = (uint64_t)addr;
iaddr |= PIOMAP_UNC_ACC_SPACE;
addr = (caddr_t)iaddr;
}
#endif
return addr;
} else
return 0;
}
/* DMA MANAGEMENT */
/* Mapping from crosstalk space to system physical space */
/*
* Allocate resources needed to set up DMA mappings up to a specified size
* on a specified adapter.
*
* We don't actually use the adapter ID for anything. It's just the adapter
* that the lower level driver plans to use for DMA.
*/
/* ARGSUSED */
hub_dmamap_t
hub_dmamap_alloc( vertex_hdl_t dev, /* set up mappings for this device */
device_desc_t dev_desc, /* device descriptor */
size_t byte_count_max, /* max size of a mapping */
unsigned flags) /* defined in dma.h */
{
hub_dmamap_t dmamap;
xwidget_info_t widget_info = xwidget_info_get(dev);
xwidgetnum_t widget = xwidget_info_id_get(widget_info);
vertex_hdl_t hubv = xwidget_info_master_get(widget_info);
dmamap = kmalloc(sizeof(struct hub_dmamap_s), GFP_ATOMIC);
dmamap->hdma_xtalk_info.xd_dev = dev;
dmamap->hdma_xtalk_info.xd_target = widget;
dmamap->hdma_hub = hubv;
dmamap->hdma_flags = HUB_DMAMAP_IS_VALID;
if (flags & XTALK_FIXED)
dmamap->hdma_flags |= HUB_DMAMAP_IS_FIXED;
return dmamap;
}
/*
* Destroy a DMA mapping from crosstalk space to system address space.
* There is no actual mapping hardware to destroy, but we at least mark
* the dmamap INVALID and free the space that it took.
*/
void
hub_dmamap_free(hub_dmamap_t hub_dmamap)
{
hub_dmamap->hdma_flags &= ~HUB_DMAMAP_IS_VALID;
kfree(hub_dmamap);
}
/*
* Establish a DMA mapping using the resources allocated in a previous dmamap_alloc.
* Return an appropriate crosstalk address range that maps to the specified physical
* address range.
*/
/* ARGSUSED */
extern iopaddr_t
hub_dmamap_addr( hub_dmamap_t dmamap, /* use these mapping resources */
paddr_t paddr, /* map for this address */
size_t byte_count) /* map this many bytes */
{
vertex_hdl_t vhdl;
ASSERT(dmamap->hdma_flags & HUB_DMAMAP_IS_VALID);
if (dmamap->hdma_flags & HUB_DMAMAP_USED) {
/* If the map is FIXED, re-use is OK. */
if (!(dmamap->hdma_flags & HUB_DMAMAP_IS_FIXED)) {
char name[MAXDEVNAME];
vhdl = dmamap->hdma_xtalk_info.xd_dev;
printk(KERN_WARNING "%s: hub_dmamap_addr re-uses dmamap.\n", vertex_to_name(vhdl, name, MAXDEVNAME));
}
} else {
dmamap->hdma_flags |= HUB_DMAMAP_USED;
}
/* There isn't actually any DMA mapping hardware on the hub. */
return (PHYS_TO_DMA(paddr));
}
/*
* Driver indicates that it has completed whatever DMA it may have started
* after an earlier dmamap_addr call.
*/
void
hub_dmamap_done(hub_dmamap_t hub_dmamap) /* done with these mapping resources */
{
vertex_hdl_t vhdl;
if (hub_dmamap->hdma_flags & HUB_DMAMAP_USED) {
hub_dmamap->hdma_flags &= ~HUB_DMAMAP_USED;
} else {
/* If the map is FIXED, re-done is OK. */
if (!(hub_dmamap->hdma_flags & HUB_DMAMAP_IS_FIXED)) {
char name[MAXDEVNAME];
vhdl = hub_dmamap->hdma_xtalk_info.xd_dev;
printk(KERN_WARNING "%s: hub_dmamap_done already done with dmamap\n", vertex_to_name(vhdl, name, MAXDEVNAME));
}
}
}
/*
* Translate a single system physical address into a crosstalk address.
*/
/* ARGSUSED */
iopaddr_t
hub_dmatrans_addr( vertex_hdl_t dev, /* translate for this device */
device_desc_t dev_desc, /* device descriptor */
paddr_t paddr, /* system physical address */
size_t byte_count, /* length */
unsigned flags) /* defined in dma.h */
{
return (PHYS_TO_DMA(paddr));
}
/*ARGSUSED*/
void
hub_dmamap_drain( hub_dmamap_t map)
{
/* XXX- flush caches, if cache coherency WAR is needed */
}
/*ARGSUSED*/
void
hub_dmaaddr_drain( vertex_hdl_t vhdl,
paddr_t addr,
size_t bytes)
{
/* XXX- flush caches, if cache coherency WAR is needed */
}
/* CONFIGURATION MANAGEMENT */
/*
* Perform initializations that allow this hub to start crosstalk support.
*/
void
hub_provider_startup(vertex_hdl_t hubv)
{
hubinfo_t hubinfo;
hubinfo_get(hubv, &hubinfo);
hub_pio_init(hubv);
intr_init_vecblk(nasid_to_cnodeid(hubinfo->h_nasid));
}
/*
* Shutdown crosstalk support from a hub.
*/
void
hub_provider_shutdown(vertex_hdl_t hub)
{
/* TBD */
xtalk_provider_unregister(hub);
}
/*
* Check that an address is in the real small window widget 0 space
* or else in the big window we're using to emulate small window 0
* in the kernel.
*/
int
hub_check_is_widget0(void *addr)
{
nasid_t nasid = NASID_GET(addr);
if (((unsigned long)addr >= RAW_NODE_SWIN_BASE(nasid, 0)) &&
((unsigned long)addr < RAW_NODE_SWIN_BASE(nasid, 1)))
return 1;
return 0;
}
/*
* Check that two addresses use the same widget
*/
int
hub_check_window_equiv(void *addra, void *addrb)
{
if (hub_check_is_widget0(addra) && hub_check_is_widget0(addrb))
return 1;
/* XXX - Assume this is really a small window address */
if (WIDGETID_GET((unsigned long)addra) ==
WIDGETID_GET((unsigned long)addrb))
return 1;
return 0;
}
/*
* hub_setup_prb(nasid, prbnum, credits, conveyor)
*
* Put a PRB into fire-and-forget mode if conveyor isn't set. Otherwise,
* put it into conveyor belt mode with the specified number of credits.
*/
void
hub_setup_prb(nasid_t nasid, int prbnum, int credits, int conveyor)
{
iprb_t prb;
int prb_offset;
if (force_fire_and_forget && !ignore_conveyor_override)
if (conveyor == HUB_PIO_CONVEYOR)
conveyor = HUB_PIO_FIRE_N_FORGET;
/*
* Get the current register value.
*/
prb_offset = IIO_IOPRB(prbnum);
prb.iprb_regval = REMOTE_HUB_L(nasid, prb_offset);
/*
* Clear out some fields.
*/
prb.iprb_ovflow = 1;
prb.iprb_bnakctr = 0;
prb.iprb_anakctr = 0;
/*
* Enable or disable fire-and-forget mode.
*/
prb.iprb_ff = ((conveyor == HUB_PIO_CONVEYOR) ? 0 : 1);
/*
* Set the appropriate number of PIO cresits for the widget.
*/
prb.iprb_xtalkctr = credits;
/*
* Store the new value to the register.
*/
REMOTE_HUB_S(nasid, prb_offset, prb.iprb_regval);
}
/*
* hub_set_piomode()
*
* Put the hub into either "PIO conveyor belt" mode or "fire-and-forget"
* mode. To do this, we have to make absolutely sure that no PIOs
* are in progress so we turn off access to all widgets for the duration
* of the function.
*
* XXX - This code should really check what kind of widget we're talking
* to. Bridges can only handle three requests, but XG will do more.
* How many can crossbow handle to widget 0? We're assuming 1.
*
* XXX - There is a bug in the crossbow that link reset PIOs do not
* return write responses. The easiest solution to this problem is to
* leave widget 0 (xbow) in fire-and-forget mode at all times. This
* only affects pio's to xbow registers, which should be rare.
*/
void
hub_set_piomode(nasid_t nasid, int conveyor)
{
hubreg_t ii_iowa;
int direct_connect;
hubii_wcr_t ii_wcr;
int prbnum;
ASSERT(nasid_to_cnodeid(nasid) != INVALID_CNODEID);
ii_iowa = REMOTE_HUB_L(nasid, IIO_OUTWIDGET_ACCESS);
REMOTE_HUB_S(nasid, IIO_OUTWIDGET_ACCESS, 0);
ii_wcr.wcr_reg_value = REMOTE_HUB_L(nasid, IIO_WCR);
direct_connect = ii_wcr.iwcr_dir_con;
if (direct_connect) {
/*
* Assume a bridge here.
*/
hub_setup_prb(nasid, 0, 3, conveyor);
} else {
/*
* Assume a crossbow here.
*/
hub_setup_prb(nasid, 0, 1, conveyor);
}
for (prbnum = HUB_WIDGET_ID_MIN; prbnum <= HUB_WIDGET_ID_MAX; prbnum++) {
/*
* XXX - Here's where we should take the widget type into
* when account assigning credits.
*/
/* Always set the PRBs in fire-and-forget mode */
hub_setup_prb(nasid, prbnum, 3, conveyor);
}
REMOTE_HUB_S(nasid, IIO_OUTWIDGET_ACCESS, ii_iowa);
}
/* Interface to allow special drivers to set hub specific
* device flags.
* Return 0 on failure , 1 on success
*/
int
hub_widget_flags_set(nasid_t nasid,
xwidgetnum_t widget_num,
hub_widget_flags_t flags)
{
ASSERT((flags & HUB_WIDGET_FLAGS) == flags);
if (flags & HUB_PIO_CONVEYOR) {
hub_setup_prb(nasid,widget_num,
3,HUB_PIO_CONVEYOR); /* set the PRB in conveyor
* belt mode with 3 credits
*/
} else if (flags & HUB_PIO_FIRE_N_FORGET) {
hub_setup_prb(nasid,widget_num,
3,HUB_PIO_FIRE_N_FORGET); /* set the PRB in fire
* and forget mode
*/
}
return 1;
}
/*
* A pointer to this structure hangs off of every hub hwgraph vertex.
* The generic xtalk layer may indirect through it to get to this specific
* crosstalk bus provider.
*/
xtalk_provider_t hub_provider = {
.piomap_alloc = (xtalk_piomap_alloc_f *) hub_piomap_alloc,
.piomap_free = (xtalk_piomap_free_f *) hub_piomap_free,
.piomap_addr = (xtalk_piomap_addr_f *) hub_piomap_addr,
.piomap_done = (xtalk_piomap_done_f *) hub_piomap_done,
.piotrans_addr = (xtalk_piotrans_addr_f *) hub_piotrans_addr,
.dmamap_alloc = (xtalk_dmamap_alloc_f *) hub_dmamap_alloc,
.dmamap_free = (xtalk_dmamap_free_f *) hub_dmamap_free,
.dmamap_addr = (xtalk_dmamap_addr_f *) hub_dmamap_addr,
.dmamap_done = (xtalk_dmamap_done_f *) hub_dmamap_done,
.dmatrans_addr = (xtalk_dmatrans_addr_f *) hub_dmatrans_addr,
.dmamap_drain = (xtalk_dmamap_drain_f *) hub_dmamap_drain,
.dmaaddr_drain = (xtalk_dmaaddr_drain_f *) hub_dmaaddr_drain,
.intr_alloc = (xtalk_intr_alloc_f *) hub_intr_alloc,
.intr_alloc_nothd = (xtalk_intr_alloc_f *) hub_intr_alloc_nothd,
.intr_free = (xtalk_intr_free_f *) hub_intr_free,
.intr_connect = (xtalk_intr_connect_f *) hub_intr_connect,
.intr_disconnect = (xtalk_intr_disconnect_f *) hub_intr_disconnect,
.provider_startup = (xtalk_provider_startup_f *) hub_provider_startup,
.provider_shutdown = (xtalk_provider_shutdown_f *) hub_provider_shutdown,
};
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