Commit 25667d67 authored by Tony Luck's avatar Tony Luck

Revert "[IA64] swiotlb abstraction (e.g. for Xen)"

This reverts commit 51099005.
parent c3442e29
#ifndef _ASM_SWIOTLB_H
#define _ASM_SWIOTLB_H 1
#include <asm/machvec.h>
#define SWIOTLB_ARCH_NEED_LATE_INIT
#define SWIOTLB_ARCH_NEED_ALLOC
#endif /* _ASM_SWIOTLB_H */
...@@ -44,7 +44,6 @@ extern void swiotlb_init(void); ...@@ -44,7 +44,6 @@ extern void swiotlb_init(void);
extern int swiotlb_force; extern int swiotlb_force;
#ifdef CONFIG_SWIOTLB #ifdef CONFIG_SWIOTLB
#define SWIOTLB_ARCH_NEED_ALLOC
extern int swiotlb; extern int swiotlb;
#else #else
#define swiotlb 0 #define swiotlb 0
......
...@@ -28,7 +28,6 @@ ...@@ -28,7 +28,6 @@
#include <asm/io.h> #include <asm/io.h>
#include <asm/dma.h> #include <asm/dma.h>
#include <asm/scatterlist.h> #include <asm/scatterlist.h>
#include <asm/swiotlb.h>
#include <linux/init.h> #include <linux/init.h>
#include <linux/bootmem.h> #include <linux/bootmem.h>
...@@ -36,10 +35,8 @@ ...@@ -36,10 +35,8 @@
#define OFFSET(val,align) ((unsigned long) \ #define OFFSET(val,align) ((unsigned long) \
( (val) & ( (align) - 1))) ( (val) & ( (align) - 1)))
#ifndef SG_ENT_VIRT_ADDRESS
#define SG_ENT_VIRT_ADDRESS(sg) (page_address((sg)->page) + (sg)->offset) #define SG_ENT_VIRT_ADDRESS(sg) (page_address((sg)->page) + (sg)->offset)
#define SG_ENT_PHYS_ADDRESS(sg) virt_to_bus(SG_ENT_VIRT_ADDRESS(sg)) #define SG_ENT_PHYS_ADDRESS(sg) virt_to_bus(SG_ENT_VIRT_ADDRESS(sg))
#endif
/* /*
* Maximum allowable number of contiguous slabs to map, * Maximum allowable number of contiguous slabs to map,
...@@ -104,25 +101,13 @@ static unsigned int io_tlb_index; ...@@ -104,25 +101,13 @@ static unsigned int io_tlb_index;
* We need to save away the original address corresponding to a mapped entry * We need to save away the original address corresponding to a mapped entry
* for the sync operations. * for the sync operations.
*/ */
#ifndef SWIOTLB_ARCH_HAS_IO_TLB_ADDR_T static unsigned char **io_tlb_orig_addr;
typedef char *io_tlb_addr_t;
#define swiotlb_orig_addr_null(buffer) (!(buffer))
#define ptr_to_io_tlb_addr(ptr) (ptr)
#define page_to_io_tlb_addr(pg, off) (page_address(pg) + (off))
#define sg_to_io_tlb_addr(sg) SG_ENT_VIRT_ADDRESS(sg)
#endif
static io_tlb_addr_t *io_tlb_orig_addr;
/* /*
* Protect the above data structures in the map and unmap calls * Protect the above data structures in the map and unmap calls
*/ */
static DEFINE_SPINLOCK(io_tlb_lock); static DEFINE_SPINLOCK(io_tlb_lock);
#ifdef SWIOTLB_EXTRA_VARIABLES
SWIOTLB_EXTRA_VARIABLES;
#endif
#ifndef SWIOTLB_ARCH_HAS_SETUP_IO_TLB_NPAGES
static int __init static int __init
setup_io_tlb_npages(char *str) setup_io_tlb_npages(char *str)
{ {
...@@ -137,25 +122,9 @@ setup_io_tlb_npages(char *str) ...@@ -137,25 +122,9 @@ setup_io_tlb_npages(char *str)
swiotlb_force = 1; swiotlb_force = 1;
return 1; return 1;
} }
#endif
__setup("swiotlb=", setup_io_tlb_npages); __setup("swiotlb=", setup_io_tlb_npages);
/* make io_tlb_overflow tunable too? */ /* make io_tlb_overflow tunable too? */
#ifndef swiotlb_adjust_size
#define swiotlb_adjust_size(size) ((void)0)
#endif
#ifndef swiotlb_adjust_seg
#define swiotlb_adjust_seg(start, size) ((void)0)
#endif
#ifndef swiotlb_print_info
#define swiotlb_print_info(bytes) \
printk(KERN_INFO "Placing %luMB software IO TLB between 0x%lx - " \
"0x%lx\n", bytes >> 20, \
virt_to_bus(io_tlb_start), virt_to_bus(io_tlb_end))
#endif
/* /*
* Statically reserve bounce buffer space and initialize bounce buffer data * Statically reserve bounce buffer space and initialize bounce buffer data
* structures for the software IO TLB used to implement the DMA API. * structures for the software IO TLB used to implement the DMA API.
...@@ -169,8 +138,6 @@ swiotlb_init_with_default_size(size_t default_size) ...@@ -169,8 +138,6 @@ swiotlb_init_with_default_size(size_t default_size)
io_tlb_nslabs = (default_size >> IO_TLB_SHIFT); io_tlb_nslabs = (default_size >> IO_TLB_SHIFT);
io_tlb_nslabs = ALIGN(io_tlb_nslabs, IO_TLB_SEGSIZE); io_tlb_nslabs = ALIGN(io_tlb_nslabs, IO_TLB_SEGSIZE);
} }
swiotlb_adjust_size(io_tlb_nslabs);
swiotlb_adjust_size(io_tlb_overflow);
bytes = io_tlb_nslabs << IO_TLB_SHIFT; bytes = io_tlb_nslabs << IO_TLB_SHIFT;
...@@ -188,14 +155,10 @@ swiotlb_init_with_default_size(size_t default_size) ...@@ -188,14 +155,10 @@ swiotlb_init_with_default_size(size_t default_size)
* between io_tlb_start and io_tlb_end. * between io_tlb_start and io_tlb_end.
*/ */
io_tlb_list = alloc_bootmem(io_tlb_nslabs * sizeof(int)); io_tlb_list = alloc_bootmem(io_tlb_nslabs * sizeof(int));
for (i = 0; i < io_tlb_nslabs; i++) { for (i = 0; i < io_tlb_nslabs; i++)
if ( !(i % IO_TLB_SEGSIZE) )
swiotlb_adjust_seg(io_tlb_start + (i << IO_TLB_SHIFT),
IO_TLB_SEGSIZE << IO_TLB_SHIFT);
io_tlb_list[i] = IO_TLB_SEGSIZE - OFFSET(i, IO_TLB_SEGSIZE); io_tlb_list[i] = IO_TLB_SEGSIZE - OFFSET(i, IO_TLB_SEGSIZE);
}
io_tlb_index = 0; io_tlb_index = 0;
io_tlb_orig_addr = alloc_bootmem(io_tlb_nslabs * sizeof(io_tlb_addr_t)); io_tlb_orig_addr = alloc_bootmem(io_tlb_nslabs * sizeof(char *));
/* /*
* Get the overflow emergency buffer * Get the overflow emergency buffer
...@@ -203,21 +166,17 @@ swiotlb_init_with_default_size(size_t default_size) ...@@ -203,21 +166,17 @@ swiotlb_init_with_default_size(size_t default_size)
io_tlb_overflow_buffer = alloc_bootmem_low(io_tlb_overflow); io_tlb_overflow_buffer = alloc_bootmem_low(io_tlb_overflow);
if (!io_tlb_overflow_buffer) if (!io_tlb_overflow_buffer)
panic("Cannot allocate SWIOTLB overflow buffer!\n"); panic("Cannot allocate SWIOTLB overflow buffer!\n");
swiotlb_adjust_seg(io_tlb_overflow_buffer, io_tlb_overflow);
swiotlb_print_info(bytes); printk(KERN_INFO "Placing software IO TLB between 0x%lx - 0x%lx\n",
virt_to_bus(io_tlb_start), virt_to_bus(io_tlb_end));
} }
#ifndef __swiotlb_init_with_default_size
#define __swiotlb_init_with_default_size swiotlb_init_with_default_size
#endif
void __init void __init
swiotlb_init(void) swiotlb_init(void)
{ {
__swiotlb_init_with_default_size(64 * (1<<20)); /* default to 64MB */ swiotlb_init_with_default_size(64 * (1<<20)); /* default to 64MB */
} }
#ifdef SWIOTLB_ARCH_NEED_LATE_INIT
/* /*
* Systems with larger DMA zones (those that don't support ISA) can * Systems with larger DMA zones (those that don't support ISA) can
* initialize the swiotlb later using the slab allocator if needed. * initialize the swiotlb later using the slab allocator if needed.
...@@ -275,12 +234,12 @@ swiotlb_late_init_with_default_size(size_t default_size) ...@@ -275,12 +234,12 @@ swiotlb_late_init_with_default_size(size_t default_size)
io_tlb_list[i] = IO_TLB_SEGSIZE - OFFSET(i, IO_TLB_SEGSIZE); io_tlb_list[i] = IO_TLB_SEGSIZE - OFFSET(i, IO_TLB_SEGSIZE);
io_tlb_index = 0; io_tlb_index = 0;
io_tlb_orig_addr = (io_tlb_addr_t *)__get_free_pages(GFP_KERNEL, io_tlb_orig_addr = (unsigned char **)__get_free_pages(GFP_KERNEL,
get_order(io_tlb_nslabs * sizeof(io_tlb_addr_t))); get_order(io_tlb_nslabs * sizeof(char *)));
if (!io_tlb_orig_addr) if (!io_tlb_orig_addr)
goto cleanup3; goto cleanup3;
memset(io_tlb_orig_addr, 0, io_tlb_nslabs * sizeof(io_tlb_addr_t)); memset(io_tlb_orig_addr, 0, io_tlb_nslabs * sizeof(char *));
/* /*
* Get the overflow emergency buffer * Get the overflow emergency buffer
...@@ -290,17 +249,19 @@ swiotlb_late_init_with_default_size(size_t default_size) ...@@ -290,17 +249,19 @@ swiotlb_late_init_with_default_size(size_t default_size)
if (!io_tlb_overflow_buffer) if (!io_tlb_overflow_buffer)
goto cleanup4; goto cleanup4;
swiotlb_print_info(bytes); printk(KERN_INFO "Placing %luMB software IO TLB between 0x%lx - "
"0x%lx\n", bytes >> 20,
virt_to_bus(io_tlb_start), virt_to_bus(io_tlb_end));
return 0; return 0;
cleanup4: cleanup4:
free_pages((unsigned long)io_tlb_orig_addr, free_pages((unsigned long)io_tlb_orig_addr, get_order(io_tlb_nslabs *
get_order(io_tlb_nslabs * sizeof(io_tlb_addr_t))); sizeof(char *)));
io_tlb_orig_addr = NULL; io_tlb_orig_addr = NULL;
cleanup3: cleanup3:
free_pages((unsigned long)io_tlb_list, free_pages((unsigned long)io_tlb_list, get_order(io_tlb_nslabs *
get_order(io_tlb_nslabs * sizeof(int))); sizeof(int)));
io_tlb_list = NULL; io_tlb_list = NULL;
cleanup2: cleanup2:
io_tlb_end = NULL; io_tlb_end = NULL;
...@@ -310,9 +271,7 @@ swiotlb_late_init_with_default_size(size_t default_size) ...@@ -310,9 +271,7 @@ swiotlb_late_init_with_default_size(size_t default_size)
io_tlb_nslabs = req_nslabs; io_tlb_nslabs = req_nslabs;
return -ENOMEM; return -ENOMEM;
} }
#endif
#ifndef SWIOTLB_ARCH_HAS_NEEDS_MAPPING
static int static int
address_needs_mapping(struct device *hwdev, dma_addr_t addr) address_needs_mapping(struct device *hwdev, dma_addr_t addr)
{ {
...@@ -323,35 +282,11 @@ address_needs_mapping(struct device *hwdev, dma_addr_t addr) ...@@ -323,35 +282,11 @@ address_needs_mapping(struct device *hwdev, dma_addr_t addr)
return (addr & ~mask) != 0; return (addr & ~mask) != 0;
} }
static inline int range_needs_mapping(const void *ptr, size_t size)
{
return swiotlb_force;
}
static inline int order_needs_mapping(unsigned int order)
{
return 0;
}
#endif
static void
__sync_single(io_tlb_addr_t buffer, char *dma_addr, size_t size, int dir)
{
#ifndef SWIOTLB_ARCH_HAS_SYNC_SINGLE
if (dir == DMA_TO_DEVICE)
memcpy(dma_addr, buffer, size);
else
memcpy(buffer, dma_addr, size);
#else
__swiotlb_arch_sync_single(buffer, dma_addr, size, dir);
#endif
}
/* /*
* Allocates bounce buffer and returns its kernel virtual address. * Allocates bounce buffer and returns its kernel virtual address.
*/ */
static void * static void *
map_single(struct device *hwdev, io_tlb_addr_t buffer, size_t size, int dir) map_single(struct device *hwdev, char *buffer, size_t size, int dir)
{ {
unsigned long flags; unsigned long flags;
char *dma_addr; char *dma_addr;
...@@ -424,7 +359,7 @@ map_single(struct device *hwdev, io_tlb_addr_t buffer, size_t size, int dir) ...@@ -424,7 +359,7 @@ map_single(struct device *hwdev, io_tlb_addr_t buffer, size_t size, int dir)
*/ */
io_tlb_orig_addr[index] = buffer; io_tlb_orig_addr[index] = buffer;
if (dir == DMA_TO_DEVICE || dir == DMA_BIDIRECTIONAL) if (dir == DMA_TO_DEVICE || dir == DMA_BIDIRECTIONAL)
__sync_single(buffer, dma_addr, size, DMA_TO_DEVICE); memcpy(dma_addr, buffer, size);
return dma_addr; return dma_addr;
} }
...@@ -438,18 +373,17 @@ unmap_single(struct device *hwdev, char *dma_addr, size_t size, int dir) ...@@ -438,18 +373,17 @@ unmap_single(struct device *hwdev, char *dma_addr, size_t size, int dir)
unsigned long flags; unsigned long flags;
int i, count, nslots = ALIGN(size, 1 << IO_TLB_SHIFT) >> IO_TLB_SHIFT; int i, count, nslots = ALIGN(size, 1 << IO_TLB_SHIFT) >> IO_TLB_SHIFT;
int index = (dma_addr - io_tlb_start) >> IO_TLB_SHIFT; int index = (dma_addr - io_tlb_start) >> IO_TLB_SHIFT;
io_tlb_addr_t buffer = io_tlb_orig_addr[index]; char *buffer = io_tlb_orig_addr[index];
/* /*
* First, sync the memory before unmapping the entry * First, sync the memory before unmapping the entry
*/ */
if (!swiotlb_orig_addr_null(buffer) if (buffer && ((dir == DMA_FROM_DEVICE) || (dir == DMA_BIDIRECTIONAL)))
&& ((dir == DMA_FROM_DEVICE) || (dir == DMA_BIDIRECTIONAL)))
/* /*
* bounce... copy the data back into the original buffer * and * bounce... copy the data back into the original buffer * and
* delete the bounce buffer. * delete the bounce buffer.
*/ */
__sync_single(buffer, dma_addr, size, DMA_FROM_DEVICE); memcpy(buffer, dma_addr, size);
/* /*
* Return the buffer to the free list by setting the corresponding * Return the buffer to the free list by setting the corresponding
...@@ -482,18 +416,18 @@ sync_single(struct device *hwdev, char *dma_addr, size_t size, ...@@ -482,18 +416,18 @@ sync_single(struct device *hwdev, char *dma_addr, size_t size,
int dir, int target) int dir, int target)
{ {
int index = (dma_addr - io_tlb_start) >> IO_TLB_SHIFT; int index = (dma_addr - io_tlb_start) >> IO_TLB_SHIFT;
io_tlb_addr_t buffer = io_tlb_orig_addr[index]; char *buffer = io_tlb_orig_addr[index];
switch (target) { switch (target) {
case SYNC_FOR_CPU: case SYNC_FOR_CPU:
if (likely(dir == DMA_FROM_DEVICE || dir == DMA_BIDIRECTIONAL)) if (likely(dir == DMA_FROM_DEVICE || dir == DMA_BIDIRECTIONAL))
__sync_single(buffer, dma_addr, size, DMA_FROM_DEVICE); memcpy(buffer, dma_addr, size);
else else
BUG_ON(dir != DMA_TO_DEVICE); BUG_ON(dir != DMA_TO_DEVICE);
break; break;
case SYNC_FOR_DEVICE: case SYNC_FOR_DEVICE:
if (likely(dir == DMA_TO_DEVICE || dir == DMA_BIDIRECTIONAL)) if (likely(dir == DMA_TO_DEVICE || dir == DMA_BIDIRECTIONAL))
__sync_single(buffer, dma_addr, size, DMA_TO_DEVICE); memcpy(dma_addr, buffer, size);
else else
BUG_ON(dir != DMA_FROM_DEVICE); BUG_ON(dir != DMA_FROM_DEVICE);
break; break;
...@@ -502,8 +436,6 @@ sync_single(struct device *hwdev, char *dma_addr, size_t size, ...@@ -502,8 +436,6 @@ sync_single(struct device *hwdev, char *dma_addr, size_t size,
} }
} }
#ifdef SWIOTLB_ARCH_NEED_ALLOC
void * void *
swiotlb_alloc_coherent(struct device *hwdev, size_t size, swiotlb_alloc_coherent(struct device *hwdev, size_t size,
dma_addr_t *dma_handle, gfp_t flags) dma_addr_t *dma_handle, gfp_t flags)
...@@ -519,10 +451,7 @@ swiotlb_alloc_coherent(struct device *hwdev, size_t size, ...@@ -519,10 +451,7 @@ swiotlb_alloc_coherent(struct device *hwdev, size_t size,
*/ */
flags |= GFP_DMA; flags |= GFP_DMA;
if (!order_needs_mapping(order))
ret = (void *)__get_free_pages(flags, order); ret = (void *)__get_free_pages(flags, order);
else
ret = NULL;
if (ret && address_needs_mapping(hwdev, virt_to_bus(ret))) { if (ret && address_needs_mapping(hwdev, virt_to_bus(ret))) {
/* /*
* The allocated memory isn't reachable by the device. * The allocated memory isn't reachable by the device.
...@@ -560,7 +489,6 @@ swiotlb_alloc_coherent(struct device *hwdev, size_t size, ...@@ -560,7 +489,6 @@ swiotlb_alloc_coherent(struct device *hwdev, size_t size,
*dma_handle = dev_addr; *dma_handle = dev_addr;
return ret; return ret;
} }
EXPORT_SYMBOL(swiotlb_alloc_coherent);
void void
swiotlb_free_coherent(struct device *hwdev, size_t size, void *vaddr, swiotlb_free_coherent(struct device *hwdev, size_t size, void *vaddr,
...@@ -573,9 +501,6 @@ swiotlb_free_coherent(struct device *hwdev, size_t size, void *vaddr, ...@@ -573,9 +501,6 @@ swiotlb_free_coherent(struct device *hwdev, size_t size, void *vaddr,
/* DMA_TO_DEVICE to avoid memcpy in unmap_single */ /* DMA_TO_DEVICE to avoid memcpy in unmap_single */
swiotlb_unmap_single (hwdev, dma_handle, size, DMA_TO_DEVICE); swiotlb_unmap_single (hwdev, dma_handle, size, DMA_TO_DEVICE);
} }
EXPORT_SYMBOL(swiotlb_free_coherent);
#endif
static void static void
swiotlb_full(struct device *dev, size_t size, int dir, int do_panic) swiotlb_full(struct device *dev, size_t size, int dir, int do_panic)
...@@ -617,14 +542,13 @@ swiotlb_map_single(struct device *hwdev, void *ptr, size_t size, int dir) ...@@ -617,14 +542,13 @@ swiotlb_map_single(struct device *hwdev, void *ptr, size_t size, int dir)
* we can safely return the device addr and not worry about bounce * we can safely return the device addr and not worry about bounce
* buffering it. * buffering it.
*/ */
if (!range_needs_mapping(ptr, size) if (!address_needs_mapping(hwdev, dev_addr) && !swiotlb_force)
&& !address_needs_mapping(hwdev, dev_addr))
return dev_addr; return dev_addr;
/* /*
* Oh well, have to allocate and map a bounce buffer. * Oh well, have to allocate and map a bounce buffer.
*/ */
map = map_single(hwdev, ptr_to_io_tlb_addr(ptr), size, dir); map = map_single(hwdev, ptr, size, dir);
if (!map) { if (!map) {
swiotlb_full(hwdev, size, dir, 1); swiotlb_full(hwdev, size, dir, 1);
map = io_tlb_overflow_buffer; map = io_tlb_overflow_buffer;
...@@ -752,16 +676,17 @@ int ...@@ -752,16 +676,17 @@ int
swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg, int nelems, swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg, int nelems,
int dir) int dir)
{ {
void *addr;
dma_addr_t dev_addr; dma_addr_t dev_addr;
int i; int i;
BUG_ON(dir == DMA_NONE); BUG_ON(dir == DMA_NONE);
for (i = 0; i < nelems; i++, sg++) { for (i = 0; i < nelems; i++, sg++) {
dev_addr = SG_ENT_PHYS_ADDRESS(sg); addr = SG_ENT_VIRT_ADDRESS(sg);
if (range_needs_mapping(SG_ENT_VIRT_ADDRESS(sg), sg->length) dev_addr = virt_to_bus(addr);
|| address_needs_mapping(hwdev, dev_addr)) { if (swiotlb_force || address_needs_mapping(hwdev, dev_addr)) {
void *map = map_single(hwdev, sg_to_io_tlb_addr(sg), sg->length, dir); void *map = map_single(hwdev, addr, sg->length, dir);
if (!map) { if (!map) {
/* Don't panic here, we expect map_sg users /* Don't panic here, we expect map_sg users
to do proper error handling. */ to do proper error handling. */
...@@ -835,44 +760,6 @@ swiotlb_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg, ...@@ -835,44 +760,6 @@ swiotlb_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,
swiotlb_sync_sg(hwdev, sg, nelems, dir, SYNC_FOR_DEVICE); swiotlb_sync_sg(hwdev, sg, nelems, dir, SYNC_FOR_DEVICE);
} }
#ifdef SWIOTLB_ARCH_NEED_MAP_PAGE
dma_addr_t
swiotlb_map_page(struct device *hwdev, struct page *page,
unsigned long offset, size_t size,
enum dma_data_direction direction)
{
dma_addr_t dev_addr;
char *map;
dev_addr = page_to_bus(page) + offset;
if (address_needs_mapping(hwdev, dev_addr)) {
map = map_single(hwdev, page_to_io_tlb_addr(page, offset), size, direction);
if (!map) {
swiotlb_full(hwdev, size, direction, 1);
map = io_tlb_overflow_buffer;
}
dev_addr = virt_to_bus(map);
}
return dev_addr;
}
void
swiotlb_unmap_page(struct device *hwdev, dma_addr_t dev_addr,
size_t size, enum dma_data_direction direction)
{
char *dma_addr = bus_to_virt(dev_addr);
BUG_ON(direction == DMA_NONE);
if (dma_addr >= io_tlb_start && dma_addr < io_tlb_end)
unmap_single(hwdev, dma_addr, size, direction);
else if (direction == DMA_FROM_DEVICE)
dma_mark_clean(dma_addr, size);
}
#endif
int int
swiotlb_dma_mapping_error(dma_addr_t dma_addr) swiotlb_dma_mapping_error(dma_addr_t dma_addr)
{ {
...@@ -885,13 +772,10 @@ swiotlb_dma_mapping_error(dma_addr_t dma_addr) ...@@ -885,13 +772,10 @@ swiotlb_dma_mapping_error(dma_addr_t dma_addr)
* during bus mastering, then you would pass 0x00ffffff as the mask to * during bus mastering, then you would pass 0x00ffffff as the mask to
* this function. * this function.
*/ */
#ifndef __swiotlb_dma_supported
#define __swiotlb_dma_supported(hwdev, mask) (virt_to_bus(io_tlb_end - 1) <= (mask))
#endif
int int
swiotlb_dma_supported(struct device *hwdev, u64 mask) swiotlb_dma_supported(struct device *hwdev, u64 mask)
{ {
return __swiotlb_dma_supported(hwdev, mask); return virt_to_bus(io_tlb_end - 1) <= mask;
} }
EXPORT_SYMBOL(swiotlb_init); EXPORT_SYMBOL(swiotlb_init);
...@@ -906,4 +790,6 @@ EXPORT_SYMBOL_GPL(swiotlb_sync_single_range_for_device); ...@@ -906,4 +790,6 @@ EXPORT_SYMBOL_GPL(swiotlb_sync_single_range_for_device);
EXPORT_SYMBOL(swiotlb_sync_sg_for_cpu); EXPORT_SYMBOL(swiotlb_sync_sg_for_cpu);
EXPORT_SYMBOL(swiotlb_sync_sg_for_device); EXPORT_SYMBOL(swiotlb_sync_sg_for_device);
EXPORT_SYMBOL(swiotlb_dma_mapping_error); EXPORT_SYMBOL(swiotlb_dma_mapping_error);
EXPORT_SYMBOL(swiotlb_alloc_coherent);
EXPORT_SYMBOL(swiotlb_free_coherent);
EXPORT_SYMBOL(swiotlb_dma_supported); EXPORT_SYMBOL(swiotlb_dma_supported);
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