aboutsummaryrefslogtreecommitdiff
path: root/arch/ia64/hp/common/sba_iommu.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/ia64/hp/common/sba_iommu.c')
-rw-r--r--arch/ia64/hp/common/sba_iommu.c126
1 files changed, 78 insertions, 48 deletions
diff --git a/arch/ia64/hp/common/sba_iommu.c b/arch/ia64/hp/common/sba_iommu.c
index 523eae6d3e49..34421aed1e2a 100644
--- a/arch/ia64/hp/common/sba_iommu.c
+++ b/arch/ia64/hp/common/sba_iommu.c
@@ -35,6 +35,7 @@
#include <linux/nodemask.h>
#include <linux/bitops.h> /* hweight64() */
#include <linux/crash_dump.h>
+#include <linux/iommu-helper.h>
#include <asm/delay.h> /* ia64_get_itc() */
#include <asm/io.h>
@@ -460,6 +461,13 @@ get_iovp_order (unsigned long size)
return order;
}
+static unsigned long ptr_to_pide(struct ioc *ioc, unsigned long *res_ptr,
+ unsigned int bitshiftcnt)
+{
+ return (((unsigned long)res_ptr - (unsigned long)ioc->res_map) << 3)
+ + bitshiftcnt;
+}
+
/**
* sba_search_bitmap - find free space in IO PDIR resource bitmap
* @ioc: IO MMU structure which owns the pdir we are interested in.
@@ -471,15 +479,25 @@ get_iovp_order (unsigned long size)
* Cool perf optimization: search for log2(size) bits at a time.
*/
static SBA_INLINE unsigned long
-sba_search_bitmap(struct ioc *ioc, unsigned long bits_wanted, int use_hint)
+sba_search_bitmap(struct ioc *ioc, struct device *dev,
+ unsigned long bits_wanted, int use_hint)
{
unsigned long *res_ptr;
unsigned long *res_end = (unsigned long *) &(ioc->res_map[ioc->res_size]);
- unsigned long flags, pide = ~0UL;
+ unsigned long flags, pide = ~0UL, tpide;
+ unsigned long boundary_size;
+ unsigned long shift;
+ int ret;
ASSERT(((unsigned long) ioc->res_hint & (sizeof(unsigned long) - 1UL)) == 0);
ASSERT(res_ptr < res_end);
+ boundary_size = (unsigned long long)dma_get_seg_boundary(dev) + 1;
+ boundary_size = ALIGN(boundary_size, 1ULL << iovp_shift) >> iovp_shift;
+
+ BUG_ON(ioc->ibase & ~iovp_mask);
+ shift = ioc->ibase >> iovp_shift;
+
spin_lock_irqsave(&ioc->res_lock, flags);
/* Allow caller to force a search through the entire resource space */
@@ -504,9 +522,7 @@ sba_search_bitmap(struct ioc *ioc, unsigned long bits_wanted, int use_hint)
if (likely(*res_ptr != ~0UL)) {
bitshiftcnt = ffz(*res_ptr);
*res_ptr |= (1UL << bitshiftcnt);
- pide = ((unsigned long)res_ptr - (unsigned long)ioc->res_map);
- pide <<= 3; /* convert to bit address */
- pide += bitshiftcnt;
+ pide = ptr_to_pide(ioc, res_ptr, bitshiftcnt);
ioc->res_bitshift = bitshiftcnt + bits_wanted;
goto found_it;
}
@@ -535,11 +551,13 @@ sba_search_bitmap(struct ioc *ioc, unsigned long bits_wanted, int use_hint)
DBG_RES(" %p %lx %lx\n", res_ptr, mask, *res_ptr);
ASSERT(0 != mask);
for (; mask ; mask <<= o, bitshiftcnt += o) {
- if(0 == ((*res_ptr) & mask)) {
+ tpide = ptr_to_pide(ioc, res_ptr, bitshiftcnt);
+ ret = iommu_is_span_boundary(tpide, bits_wanted,
+ shift,
+ boundary_size);
+ if ((0 == ((*res_ptr) & mask)) && !ret) {
*res_ptr |= mask; /* mark resources busy! */
- pide = ((unsigned long)res_ptr - (unsigned long)ioc->res_map);
- pide <<= 3; /* convert to bit address */
- pide += bitshiftcnt;
+ pide = tpide;
ioc->res_bitshift = bitshiftcnt + bits_wanted;
goto found_it;
}
@@ -560,6 +578,11 @@ sba_search_bitmap(struct ioc *ioc, unsigned long bits_wanted, int use_hint)
end = res_end - qwords;
for (; res_ptr < end; res_ptr++) {
+ tpide = ptr_to_pide(ioc, res_ptr, 0);
+ ret = iommu_is_span_boundary(tpide, bits_wanted,
+ shift, boundary_size);
+ if (ret)
+ goto next_ptr;
for (i = 0 ; i < qwords ; i++) {
if (res_ptr[i] != 0)
goto next_ptr;
@@ -572,8 +595,7 @@ sba_search_bitmap(struct ioc *ioc, unsigned long bits_wanted, int use_hint)
res_ptr[i] = ~0UL;
res_ptr[i] |= RESMAP_MASK(bits);
- pide = ((unsigned long)res_ptr - (unsigned long)ioc->res_map);
- pide <<= 3; /* convert to bit address */
+ pide = tpide;
res_ptr += qwords;
ioc->res_bitshift = bits;
goto found_it;
@@ -605,7 +627,7 @@ found_it:
* resource bit map.
*/
static int
-sba_alloc_range(struct ioc *ioc, size_t size)
+sba_alloc_range(struct ioc *ioc, struct device *dev, size_t size)
{
unsigned int pages_needed = size >> iovp_shift;
#ifdef PDIR_SEARCH_TIMING
@@ -622,9 +644,9 @@ sba_alloc_range(struct ioc *ioc, size_t size)
/*
** "seek and ye shall find"...praying never hurts either...
*/
- pide = sba_search_bitmap(ioc, pages_needed, 1);
+ pide = sba_search_bitmap(ioc, dev, pages_needed, 1);
if (unlikely(pide >= (ioc->res_size << 3))) {
- pide = sba_search_bitmap(ioc, pages_needed, 0);
+ pide = sba_search_bitmap(ioc, dev, pages_needed, 0);
if (unlikely(pide >= (ioc->res_size << 3))) {
#if DELAYED_RESOURCE_CNT > 0
unsigned long flags;
@@ -653,7 +675,7 @@ sba_alloc_range(struct ioc *ioc, size_t size)
}
spin_unlock_irqrestore(&ioc->saved_lock, flags);
- pide = sba_search_bitmap(ioc, pages_needed, 0);
+ pide = sba_search_bitmap(ioc, dev, pages_needed, 0);
if (unlikely(pide >= (ioc->res_size << 3)))
panic(__FILE__ ": I/O MMU @ %p is out of mapping resources\n",
ioc->ioc_hpa);
@@ -877,16 +899,18 @@ sba_mark_invalid(struct ioc *ioc, dma_addr_t iova, size_t byte_cnt)
}
/**
- * sba_map_single - map one buffer and return IOVA for DMA
+ * sba_map_single_attrs - map one buffer and return IOVA for DMA
* @dev: instance of PCI owned by the driver that's asking.
* @addr: driver buffer to map.
* @size: number of bytes to map in driver buffer.
* @dir: R/W or both.
+ * @attrs: optional dma attributes
*
* See Documentation/DMA-mapping.txt
*/
dma_addr_t
-sba_map_single(struct device *dev, void *addr, size_t size, int dir)
+sba_map_single_attrs(struct device *dev, void *addr, size_t size, int dir,
+ struct dma_attrs *attrs)
{
struct ioc *ioc;
dma_addr_t iovp;
@@ -910,7 +934,8 @@ sba_map_single(struct device *dev, void *addr, size_t size, int dir)
** Device is bit capable of DMA'ing to the buffer...
** just return the PCI address of ptr
*/
- DBG_BYPASS("sba_map_single() bypass mask/addr: 0x%lx/0x%lx\n",
+ DBG_BYPASS("sba_map_single_attrs() bypass mask/addr: "
+ "0x%lx/0x%lx\n",
to_pci_dev(dev)->dma_mask, pci_addr);
return pci_addr;
}
@@ -931,12 +956,12 @@ sba_map_single(struct device *dev, void *addr, size_t size, int dir)
#ifdef ASSERT_PDIR_SANITY
spin_lock_irqsave(&ioc->res_lock, flags);
- if (sba_check_pdir(ioc,"Check before sba_map_single()"))
+ if (sba_check_pdir(ioc,"Check before sba_map_single_attrs()"))
panic("Sanity check failed");
spin_unlock_irqrestore(&ioc->res_lock, flags);
#endif
- pide = sba_alloc_range(ioc, size);
+ pide = sba_alloc_range(ioc, dev, size);
iovp = (dma_addr_t) pide << iovp_shift;
@@ -960,11 +985,12 @@ sba_map_single(struct device *dev, void *addr, size_t size, int dir)
/* form complete address */
#ifdef ASSERT_PDIR_SANITY
spin_lock_irqsave(&ioc->res_lock, flags);
- sba_check_pdir(ioc,"Check after sba_map_single()");
+ sba_check_pdir(ioc,"Check after sba_map_single_attrs()");
spin_unlock_irqrestore(&ioc->res_lock, flags);
#endif
return SBA_IOVA(ioc, iovp, offset);
}
+EXPORT_SYMBOL(sba_map_single_attrs);
#ifdef ENABLE_MARK_CLEAN
static SBA_INLINE void
@@ -991,15 +1017,17 @@ sba_mark_clean(struct ioc *ioc, dma_addr_t iova, size_t size)
#endif
/**
- * sba_unmap_single - unmap one IOVA and free resources
+ * sba_unmap_single_attrs - unmap one IOVA and free resources
* @dev: instance of PCI owned by the driver that's asking.
* @iova: IOVA of driver buffer previously mapped.
* @size: number of bytes mapped in driver buffer.
* @dir: R/W or both.
+ * @attrs: optional dma attributes
*
* See Documentation/DMA-mapping.txt
*/
-void sba_unmap_single(struct device *dev, dma_addr_t iova, size_t size, int dir)
+void sba_unmap_single_attrs(struct device *dev, dma_addr_t iova, size_t size,
+ int dir, struct dma_attrs *attrs)
{
struct ioc *ioc;
#if DELAYED_RESOURCE_CNT > 0
@@ -1016,7 +1044,8 @@ void sba_unmap_single(struct device *dev, dma_addr_t iova, size_t size, int dir)
/*
** Address does not fall w/in IOVA, must be bypassing
*/
- DBG_BYPASS("sba_unmap_single() bypass addr: 0x%lx\n", iova);
+ DBG_BYPASS("sba_unmap_single_atttrs() bypass addr: 0x%lx\n",
+ iova);
#ifdef ENABLE_MARK_CLEAN
if (dir == DMA_FROM_DEVICE) {
@@ -1065,7 +1094,7 @@ void sba_unmap_single(struct device *dev, dma_addr_t iova, size_t size, int dir)
spin_unlock_irqrestore(&ioc->res_lock, flags);
#endif /* DELAYED_RESOURCE_CNT == 0 */
}
-
+EXPORT_SYMBOL(sba_unmap_single_attrs);
/**
* sba_alloc_coherent - allocate/map shared mem for DMA
@@ -1122,7 +1151,8 @@ sba_alloc_coherent (struct device *dev, size_t size, dma_addr_t *dma_handle, gfp
* If device can't bypass or bypass is disabled, pass the 32bit fake
* device to map single to get an iova mapping.
*/
- *dma_handle = sba_map_single(&ioc->sac_only_dev->dev, addr, size, 0);
+ *dma_handle = sba_map_single_attrs(&ioc->sac_only_dev->dev, addr,
+ size, 0, NULL);
return addr;
}
@@ -1139,7 +1169,7 @@ sba_alloc_coherent (struct device *dev, size_t size, dma_addr_t *dma_handle, gfp
*/
void sba_free_coherent (struct device *dev, size_t size, void *vaddr, dma_addr_t dma_handle)
{
- sba_unmap_single(dev, dma_handle, size, 0);
+ sba_unmap_single_attrs(dev, dma_handle, size, 0, NULL);
free_pages((unsigned long) vaddr, get_order(size));
}
@@ -1373,7 +1403,7 @@ sba_coalesce_chunks(struct ioc *ioc, struct device *dev,
dma_len = (dma_len + dma_offset + ~iovp_mask) & iovp_mask;
ASSERT(dma_len <= DMA_CHUNK_SIZE);
dma_sg->dma_address = (dma_addr_t) (PIDE_FLAG
- | (sba_alloc_range(ioc, dma_len) << iovp_shift)
+ | (sba_alloc_range(ioc, dev, dma_len) << iovp_shift)
| dma_offset);
n_mappings++;
}
@@ -1388,10 +1418,12 @@ sba_coalesce_chunks(struct ioc *ioc, struct device *dev,
* @sglist: array of buffer/length pairs
* @nents: number of entries in list
* @dir: R/W or both.
+ * @attrs: optional dma attributes
*
* See Documentation/DMA-mapping.txt
*/
-int sba_map_sg(struct device *dev, struct scatterlist *sglist, int nents, int dir)
+int sba_map_sg_attrs(struct device *dev, struct scatterlist *sglist, int nents,
+ int dir, struct dma_attrs *attrs)
{
struct ioc *ioc;
int coalesced, filled = 0;
@@ -1419,16 +1451,16 @@ int sba_map_sg(struct device *dev, struct scatterlist *sglist, int nents, int di
/* Fast path single entry scatterlists. */
if (nents == 1) {
sglist->dma_length = sglist->length;
- sglist->dma_address = sba_map_single(dev, sba_sg_address(sglist), sglist->length, dir);
+ sglist->dma_address = sba_map_single_attrs(dev, sba_sg_address(sglist), sglist->length, dir, attrs);
return 1;
}
#ifdef ASSERT_PDIR_SANITY
spin_lock_irqsave(&ioc->res_lock, flags);
- if (sba_check_pdir(ioc,"Check before sba_map_sg()"))
+ if (sba_check_pdir(ioc,"Check before sba_map_sg_attrs()"))
{
sba_dump_sg(ioc, sglist, nents);
- panic("Check before sba_map_sg()");
+ panic("Check before sba_map_sg_attrs()");
}
spin_unlock_irqrestore(&ioc->res_lock, flags);
#endif
@@ -1457,10 +1489,10 @@ int sba_map_sg(struct device *dev, struct scatterlist *sglist, int nents, int di
#ifdef ASSERT_PDIR_SANITY
spin_lock_irqsave(&ioc->res_lock, flags);
- if (sba_check_pdir(ioc,"Check after sba_map_sg()"))
+ if (sba_check_pdir(ioc,"Check after sba_map_sg_attrs()"))
{
sba_dump_sg(ioc, sglist, nents);
- panic("Check after sba_map_sg()\n");
+ panic("Check after sba_map_sg_attrs()\n");
}
spin_unlock_irqrestore(&ioc->res_lock, flags);
#endif
@@ -1470,18 +1502,20 @@ int sba_map_sg(struct device *dev, struct scatterlist *sglist, int nents, int di
return filled;
}
-
+EXPORT_SYMBOL(sba_map_sg_attrs);
/**
- * sba_unmap_sg - unmap Scatter/Gather list
+ * sba_unmap_sg_attrs - unmap Scatter/Gather list
* @dev: instance of PCI owned by the driver that's asking.
* @sglist: array of buffer/length pairs
* @nents: number of entries in list
* @dir: R/W or both.
+ * @attrs: optional dma attributes
*
* See Documentation/DMA-mapping.txt
*/
-void sba_unmap_sg (struct device *dev, struct scatterlist *sglist, int nents, int dir)
+void sba_unmap_sg_attrs(struct device *dev, struct scatterlist *sglist,
+ int nents, int dir, struct dma_attrs *attrs)
{
#ifdef ASSERT_PDIR_SANITY
struct ioc *ioc;
@@ -1496,13 +1530,14 @@ void sba_unmap_sg (struct device *dev, struct scatterlist *sglist, int nents, in
ASSERT(ioc);
spin_lock_irqsave(&ioc->res_lock, flags);
- sba_check_pdir(ioc,"Check before sba_unmap_sg()");
+ sba_check_pdir(ioc,"Check before sba_unmap_sg_attrs()");
spin_unlock_irqrestore(&ioc->res_lock, flags);
#endif
while (nents && sglist->dma_length) {
- sba_unmap_single(dev, sglist->dma_address, sglist->dma_length, dir);
+ sba_unmap_single_attrs(dev, sglist->dma_address,
+ sglist->dma_length, dir, attrs);
sglist = sg_next(sglist);
nents--;
}
@@ -1511,11 +1546,12 @@ void sba_unmap_sg (struct device *dev, struct scatterlist *sglist, int nents, in
#ifdef ASSERT_PDIR_SANITY
spin_lock_irqsave(&ioc->res_lock, flags);
- sba_check_pdir(ioc,"Check after sba_unmap_sg()");
+ sba_check_pdir(ioc,"Check after sba_unmap_sg_attrs()");
spin_unlock_irqrestore(&ioc->res_lock, flags);
#endif
}
+EXPORT_SYMBOL(sba_unmap_sg_attrs);
/**************************************************************
*
@@ -1896,15 +1932,13 @@ static const struct file_operations ioc_fops = {
static void __init
ioc_proc_init(void)
{
- struct proc_dir_entry *dir, *entry;
+ struct proc_dir_entry *dir;
dir = proc_mkdir("bus/mckinley", NULL);
if (!dir)
return;
- entry = create_proc_entry(ioc_list->name, 0, dir);
- if (entry)
- entry->proc_fops = &ioc_fops;
+ proc_create(ioc_list->name, 0, dir, &ioc_fops);
}
#endif
@@ -2144,10 +2178,6 @@ sba_page_override(char *str)
__setup("sbapagesize=",sba_page_override);
EXPORT_SYMBOL(sba_dma_mapping_error);
-EXPORT_SYMBOL(sba_map_single);
-EXPORT_SYMBOL(sba_unmap_single);
-EXPORT_SYMBOL(sba_map_sg);
-EXPORT_SYMBOL(sba_unmap_sg);
EXPORT_SYMBOL(sba_dma_supported);
EXPORT_SYMBOL(sba_alloc_coherent);
EXPORT_SYMBOL(sba_free_coherent);
Powered by cgit, Gruvboxed by Blaster4385.