* bigger page size) at lowest level and have some shim layer on top that would
* provide the same functionality as TTM.
*/
-#define DMEM_CHUNK_SIZE (2UL << 20)
+#define DMEM_CHUNK_SIZE (HPAGE_PMD_SIZE)
#define DMEM_CHUNK_NPAGES (DMEM_CHUNK_SIZE >> PAGE_SHIFT)
+#define NR_CHUNKS (128)
enum nouveau_aper {
NOUVEAU_APER_VIRT,
struct list_head chunks;
struct mutex mutex;
struct page *free_pages;
+ struct folio *free_folios;
spinlock_t lock;
};
+struct nouveau_dmem_dma_info {
+ dma_addr_t dma_addr;
+ size_t size;
+};
+
static struct nouveau_dmem_chunk *nouveau_page_to_chunk(struct page *page)
{
return container_of(page_pgmap(page), struct nouveau_dmem_chunk,
{
struct nouveau_dmem_chunk *chunk = nouveau_page_to_chunk(page);
struct nouveau_dmem *dmem = chunk->drm->dmem;
+ struct folio *folio = page_folio(page);
spin_lock(&dmem->lock);
- page->zone_device_data = dmem->free_pages;
- dmem->free_pages = page;
+ if (folio_order(folio)) {
+ page->zone_device_data = dmem->free_folios;
+ dmem->free_folios = folio;
+ } else {
+ page->zone_device_data = dmem->free_pages;
+ dmem->free_pages = page;
+ }
WARN_ON(!chunk->callocated);
chunk->callocated--;
}
}
-static int nouveau_dmem_copy_one(struct nouveau_drm *drm, struct page *spage,
- struct page *dpage, dma_addr_t *dma_addr)
+static int nouveau_dmem_copy_folio(struct nouveau_drm *drm,
+ struct folio *sfolio, struct folio *dfolio,
+ struct nouveau_dmem_dma_info *dma_info)
{
struct device *dev = drm->dev->dev;
+ struct page *dpage = folio_page(dfolio, 0);
+ struct page *spage = folio_page(sfolio, 0);
- lock_page(dpage);
+ folio_lock(dfolio);
- *dma_addr = dma_map_page(dev, dpage, 0, PAGE_SIZE, DMA_BIDIRECTIONAL);
- if (dma_mapping_error(dev, *dma_addr))
+ dma_info->dma_addr = dma_map_page(dev, dpage, 0, page_size(dpage),
+ DMA_BIDIRECTIONAL);
+ dma_info->size = page_size(dpage);
+ if (dma_mapping_error(dev, dma_info->dma_addr))
return -EIO;
- if (drm->dmem->migrate.copy_func(drm, 1, NOUVEAU_APER_HOST, *dma_addr,
- NOUVEAU_APER_VRAM, nouveau_dmem_page_addr(spage))) {
- dma_unmap_page(dev, *dma_addr, PAGE_SIZE, DMA_BIDIRECTIONAL);
+ if (drm->dmem->migrate.copy_func(drm, folio_nr_pages(sfolio),
+ NOUVEAU_APER_HOST, dma_info->dma_addr,
+ NOUVEAU_APER_VRAM,
+ nouveau_dmem_page_addr(spage))) {
+ dma_unmap_page(dev, dma_info->dma_addr, page_size(dpage),
+ DMA_BIDIRECTIONAL);
return -EIO;
}
struct nouveau_dmem *dmem = drm->dmem;
struct nouveau_fence *fence;
struct nouveau_svmm *svmm;
- struct page *spage, *dpage;
- unsigned long src = 0, dst = 0;
- dma_addr_t dma_addr = 0;
+ struct page *dpage;
vm_fault_t ret = 0;
struct migrate_vma args = {
.vma = vmf->vma,
- .start = vmf->address,
- .end = vmf->address + PAGE_SIZE,
- .src = &src,
- .dst = &dst,
.pgmap_owner = drm->dev,
.fault_page = vmf->page,
- .flags = MIGRATE_VMA_SELECT_DEVICE_PRIVATE,
+ .flags = MIGRATE_VMA_SELECT_DEVICE_PRIVATE |
+ MIGRATE_VMA_SELECT_COMPOUND,
+ .src = NULL,
+ .dst = NULL,
};
+ unsigned int order, nr;
+ struct folio *sfolio, *dfolio;
+ struct nouveau_dmem_dma_info dma_info;
+
+ sfolio = page_folio(vmf->page);
+ order = folio_order(sfolio);
+ nr = 1 << order;
+
+ /*
+ * Handle partial unmap faults, where the folio is large, but
+ * the pmd is split.
+ */
+ if (vmf->pte) {
+ order = 0;
+ nr = 1;
+ }
+
+ if (order)
+ args.flags |= MIGRATE_VMA_SELECT_COMPOUND;
+ args.start = ALIGN_DOWN(vmf->address, (PAGE_SIZE << order));
+ args.vma = vmf->vma;
+ args.end = args.start + (PAGE_SIZE << order);
+ args.src = kcalloc(nr, sizeof(*args.src), GFP_KERNEL);
+ args.dst = kcalloc(nr, sizeof(*args.dst), GFP_KERNEL);
+
+ if (!args.src || !args.dst) {
+ ret = VM_FAULT_OOM;
+ goto err;
+ }
/*
* FIXME what we really want is to find some heuristic to migrate more
* than just one page on CPU fault. When such fault happens it is very
if (!args.cpages)
return 0;
- spage = migrate_pfn_to_page(src);
- if (!spage || !(src & MIGRATE_PFN_MIGRATE))
- goto done;
-
- dpage = alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO, vmf->vma, vmf->address);
- if (!dpage)
+ if (order)
+ dpage = folio_page(vma_alloc_folio(GFP_HIGHUSER | __GFP_ZERO,
+ order, vmf->vma, vmf->address), 0);
+ else
+ dpage = alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO, vmf->vma,
+ vmf->address);
+ if (!dpage) {
+ ret = VM_FAULT_OOM;
goto done;
+ }
- dst = migrate_pfn(page_to_pfn(dpage));
+ args.dst[0] = migrate_pfn(page_to_pfn(dpage));
+ if (order)
+ args.dst[0] |= MIGRATE_PFN_COMPOUND;
+ dfolio = page_folio(dpage);
- svmm = spage->zone_device_data;
+ svmm = folio_zone_device_data(sfolio);
mutex_lock(&svmm->mutex);
nouveau_svmm_invalidate(svmm, args.start, args.end);
- ret = nouveau_dmem_copy_one(drm, spage, dpage, &dma_addr);
+ ret = nouveau_dmem_copy_folio(drm, sfolio, dfolio, &dma_info);
mutex_unlock(&svmm->mutex);
if (ret) {
ret = VM_FAULT_SIGBUS;
nouveau_fence_new(&fence, dmem->migrate.chan);
migrate_vma_pages(&args);
nouveau_dmem_fence_done(&fence);
- dma_unmap_page(drm->dev->dev, dma_addr, PAGE_SIZE, DMA_BIDIRECTIONAL);
+ dma_unmap_page(drm->dev->dev, dma_info.dma_addr, PAGE_SIZE,
+ DMA_BIDIRECTIONAL);
done:
migrate_vma_finalize(&args);
+err:
+ kfree(args.src);
+ kfree(args.dst);
return ret;
}
+static void nouveau_dmem_folio_split(struct folio *head, struct folio *tail)
+{
+ if (tail == NULL)
+ return;
+ tail->pgmap = head->pgmap;
+ tail->mapping = head->mapping;
+ folio_set_zone_device_data(tail, folio_zone_device_data(head));
+}
+
static const struct dev_pagemap_ops nouveau_dmem_pagemap_ops = {
.page_free = nouveau_dmem_page_free,
.migrate_to_ram = nouveau_dmem_migrate_to_ram,
+ .folio_split = nouveau_dmem_folio_split,
};
static int
-nouveau_dmem_chunk_alloc(struct nouveau_drm *drm, struct page **ppage)
+nouveau_dmem_chunk_alloc(struct nouveau_drm *drm, struct page **ppage,
+ bool is_large)
{
struct nouveau_dmem_chunk *chunk;
struct resource *res;
struct page *page;
void *ptr;
- unsigned long i, pfn_first;
+ unsigned long i, pfn_first, pfn;
int ret;
chunk = kzalloc(sizeof(*chunk), GFP_KERNEL);
}
/* Allocate unused physical address space for device private pages. */
- res = request_free_mem_region(&iomem_resource, DMEM_CHUNK_SIZE,
+ res = request_free_mem_region(&iomem_resource, DMEM_CHUNK_SIZE * NR_CHUNKS,
"nouveau_dmem");
if (IS_ERR(res)) {
ret = PTR_ERR(res);
pfn_first = chunk->pagemap.range.start >> PAGE_SHIFT;
page = pfn_to_page(pfn_first);
spin_lock(&drm->dmem->lock);
- for (i = 0; i < DMEM_CHUNK_NPAGES - 1; ++i, ++page) {
- page->zone_device_data = drm->dmem->free_pages;
- drm->dmem->free_pages = page;
+
+ pfn = pfn_first;
+ for (i = 0; i < NR_CHUNKS; i++) {
+ int j;
+
+ if (!IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE) || !is_large) {
+ for (j = 0; j < DMEM_CHUNK_NPAGES - 1; j++, pfn++) {
+ page = pfn_to_page(pfn);
+ page->zone_device_data = drm->dmem->free_pages;
+ drm->dmem->free_pages = page;
+ }
+ } else {
+ page = pfn_to_page(pfn);
+ page->zone_device_data = drm->dmem->free_folios;
+ drm->dmem->free_folios = page_folio(page);
+ pfn += DMEM_CHUNK_NPAGES;
+ }
}
- *ppage = page;
+
+ /* Move to next page */
+ if (is_large) {
+ *ppage = &drm->dmem->free_folios->page;
+ drm->dmem->free_folios = (*ppage)->zone_device_data;
+ } else {
+ *ppage = drm->dmem->free_pages;
+ drm->dmem->free_pages = (*ppage)->zone_device_data;
+ }
+
chunk->callocated++;
spin_unlock(&drm->dmem->lock);
- NV_INFO(drm, "DMEM: registered %ldMB of device memory\n",
- DMEM_CHUNK_SIZE >> 20);
+ NV_INFO(drm, "DMEM: registered %ldMB of %sdevice memory %lx %lx\n",
+ NR_CHUNKS * DMEM_CHUNK_SIZE >> 20, is_large ? "THP " : "", pfn_first,
+ nouveau_dmem_page_addr(page));
return 0;
}
static struct page *
-nouveau_dmem_page_alloc_locked(struct nouveau_drm *drm)
+nouveau_dmem_page_alloc_locked(struct nouveau_drm *drm, bool is_large)
{
struct nouveau_dmem_chunk *chunk;
struct page *page = NULL;
+ struct folio *folio = NULL;
int ret;
+ unsigned int order = 0;
spin_lock(&drm->dmem->lock);
- if (drm->dmem->free_pages) {
+ if (is_large && drm->dmem->free_folios) {
+ folio = drm->dmem->free_folios;
+ page = &folio->page;
+ drm->dmem->free_folios = page->zone_device_data;
+ chunk = nouveau_page_to_chunk(&folio->page);
+ chunk->callocated++;
+ spin_unlock(&drm->dmem->lock);
+ order = ilog2(DMEM_CHUNK_NPAGES);
+ } else if (!is_large && drm->dmem->free_pages) {
page = drm->dmem->free_pages;
drm->dmem->free_pages = page->zone_device_data;
chunk = nouveau_page_to_chunk(page);
chunk->callocated++;
spin_unlock(&drm->dmem->lock);
+ folio = page_folio(page);
} else {
spin_unlock(&drm->dmem->lock);
- ret = nouveau_dmem_chunk_alloc(drm, &page);
+ ret = nouveau_dmem_chunk_alloc(drm, &page, is_large);
if (ret)
return NULL;
+ folio = page_folio(page);
+ if (is_large)
+ order = ilog2(DMEM_CHUNK_NPAGES);
}
- zone_device_page_init(page);
+ zone_device_folio_init(folio, order);
return page;
}
{
unsigned long i, npages = range_len(&chunk->pagemap.range) >> PAGE_SHIFT;
unsigned long *src_pfns, *dst_pfns;
- dma_addr_t *dma_addrs;
+ struct nouveau_dmem_dma_info *dma_info;
struct nouveau_fence *fence;
src_pfns = kvcalloc(npages, sizeof(*src_pfns), GFP_KERNEL | __GFP_NOFAIL);
dst_pfns = kvcalloc(npages, sizeof(*dst_pfns), GFP_KERNEL | __GFP_NOFAIL);
- dma_addrs = kvcalloc(npages, sizeof(*dma_addrs), GFP_KERNEL | __GFP_NOFAIL);
+ dma_info = kvcalloc(npages, sizeof(*dma_info), GFP_KERNEL | __GFP_NOFAIL);
migrate_device_range(src_pfns, chunk->pagemap.range.start >> PAGE_SHIFT,
npages);
for (i = 0; i < npages; i++) {
if (src_pfns[i] & MIGRATE_PFN_MIGRATE) {
struct page *dpage;
+ struct folio *folio = page_folio(
+ migrate_pfn_to_page(src_pfns[i]));
+ unsigned int order = folio_order(folio);
+
+ if (src_pfns[i] & MIGRATE_PFN_COMPOUND) {
+ dpage = folio_page(
+ folio_alloc(
+ GFP_HIGHUSER_MOVABLE, order), 0);
+ } else {
+ /*
+ * _GFP_NOFAIL because the GPU is going away and there
+ * is nothing sensible we can do if we can't copy the
+ * data back.
+ */
+ dpage = alloc_page(GFP_HIGHUSER | __GFP_NOFAIL);
+ }
- /*
- * _GFP_NOFAIL because the GPU is going away and there
- * is nothing sensible we can do if we can't copy the
- * data back.
- */
- dpage = alloc_page(GFP_HIGHUSER | __GFP_NOFAIL);
dst_pfns[i] = migrate_pfn(page_to_pfn(dpage));
- nouveau_dmem_copy_one(chunk->drm,
- migrate_pfn_to_page(src_pfns[i]), dpage,
- &dma_addrs[i]);
+ nouveau_dmem_copy_folio(chunk->drm,
+ page_folio(migrate_pfn_to_page(src_pfns[i])),
+ page_folio(dpage),
+ &dma_info[i]);
}
}
kvfree(src_pfns);
kvfree(dst_pfns);
for (i = 0; i < npages; i++)
- dma_unmap_page(chunk->drm->dev->dev, dma_addrs[i], PAGE_SIZE, DMA_BIDIRECTIONAL);
- kvfree(dma_addrs);
+ dma_unmap_page(chunk->drm->dev->dev, dma_info[i].dma_addr,
+ dma_info[i].size, DMA_BIDIRECTIONAL);
+ kvfree(dma_info);
}
void
static unsigned long nouveau_dmem_migrate_copy_one(struct nouveau_drm *drm,
struct nouveau_svmm *svmm, unsigned long src,
- dma_addr_t *dma_addr, u64 *pfn)
+ struct nouveau_dmem_dma_info *dma_info, u64 *pfn)
{
struct device *dev = drm->dev->dev;
struct page *dpage, *spage;
unsigned long paddr;
+ bool is_large = false;
+ unsigned long mpfn;
spage = migrate_pfn_to_page(src);
if (!(src & MIGRATE_PFN_MIGRATE))
goto out;
- dpage = nouveau_dmem_page_alloc_locked(drm);
+ is_large = src & MIGRATE_PFN_COMPOUND;
+ dpage = nouveau_dmem_page_alloc_locked(drm, is_large);
if (!dpage)
goto out;
paddr = nouveau_dmem_page_addr(dpage);
if (spage) {
- *dma_addr = dma_map_page(dev, spage, 0, page_size(spage),
+ dma_info->dma_addr = dma_map_page(dev, spage, 0, page_size(spage),
DMA_BIDIRECTIONAL);
- if (dma_mapping_error(dev, *dma_addr))
+ dma_info->size = page_size(spage);
+ if (dma_mapping_error(dev, dma_info->dma_addr))
goto out_free_page;
- if (drm->dmem->migrate.copy_func(drm, 1,
- NOUVEAU_APER_VRAM, paddr, NOUVEAU_APER_HOST, *dma_addr))
+ if (drm->dmem->migrate.copy_func(drm, folio_nr_pages(page_folio(spage)),
+ NOUVEAU_APER_VRAM, paddr, NOUVEAU_APER_HOST,
+ dma_info->dma_addr))
goto out_dma_unmap;
} else {
- *dma_addr = DMA_MAPPING_ERROR;
+ dma_info->dma_addr = DMA_MAPPING_ERROR;
if (drm->dmem->migrate.clear_func(drm, page_size(dpage),
NOUVEAU_APER_VRAM, paddr))
goto out_free_page;
((paddr >> PAGE_SHIFT) << NVIF_VMM_PFNMAP_V0_ADDR_SHIFT);
if (src & MIGRATE_PFN_WRITE)
*pfn |= NVIF_VMM_PFNMAP_V0_W;
- return migrate_pfn(page_to_pfn(dpage));
+ mpfn = migrate_pfn(page_to_pfn(dpage));
+ if (folio_order(page_folio(dpage)))
+ mpfn |= MIGRATE_PFN_COMPOUND;
+ return mpfn;
out_dma_unmap:
- dma_unmap_page(dev, *dma_addr, PAGE_SIZE, DMA_BIDIRECTIONAL);
+ dma_unmap_page(dev, dma_info->dma_addr, PAGE_SIZE, DMA_BIDIRECTIONAL);
out_free_page:
nouveau_dmem_page_free_locked(drm, dpage);
out:
static void nouveau_dmem_migrate_chunk(struct nouveau_drm *drm,
struct nouveau_svmm *svmm, struct migrate_vma *args,
- dma_addr_t *dma_addrs, u64 *pfns)
+ struct nouveau_dmem_dma_info *dma_info, u64 *pfns)
{
struct nouveau_fence *fence;
unsigned long addr = args->start, nr_dma = 0, i;
+ unsigned long order = 0;
+
+ for (i = 0; addr < args->end; ) {
+ struct folio *folio;
- for (i = 0; addr < args->end; i++) {
args->dst[i] = nouveau_dmem_migrate_copy_one(drm, svmm,
- args->src[i], dma_addrs + nr_dma, pfns + i);
- if (!dma_mapping_error(drm->dev->dev, dma_addrs[nr_dma]))
+ args->src[i], dma_info + nr_dma, pfns + i);
+ if (!args->dst[i]) {
+ i++;
+ addr += PAGE_SIZE;
+ continue;
+ }
+ if (!dma_mapping_error(drm->dev->dev, dma_info[nr_dma].dma_addr))
nr_dma++;
- addr += PAGE_SIZE;
+ folio = page_folio(migrate_pfn_to_page(args->dst[i]));
+ order = folio_order(folio);
+ i += 1 << order;
+ addr += (1 << order) * PAGE_SIZE;
}
nouveau_fence_new(&fence, drm->dmem->migrate.chan);
migrate_vma_pages(args);
nouveau_dmem_fence_done(&fence);
- nouveau_pfns_map(svmm, args->vma->vm_mm, args->start, pfns, i);
+ nouveau_pfns_map(svmm, args->vma->vm_mm, args->start, pfns, i, order);
while (nr_dma--) {
- dma_unmap_page(drm->dev->dev, dma_addrs[nr_dma], PAGE_SIZE,
- DMA_BIDIRECTIONAL);
+ dma_unmap_page(drm->dev->dev, dma_info[nr_dma].dma_addr,
+ dma_info[nr_dma].size, DMA_BIDIRECTIONAL);
}
migrate_vma_finalize(args);
}
unsigned long end)
{
unsigned long npages = (end - start) >> PAGE_SHIFT;
- unsigned long max = min(SG_MAX_SINGLE_ALLOC, npages);
- dma_addr_t *dma_addrs;
+ unsigned long max = npages;
struct migrate_vma args = {
.vma = vma,
.start = start,
.pgmap_owner = drm->dev,
- .flags = MIGRATE_VMA_SELECT_SYSTEM,
+ .flags = MIGRATE_VMA_SELECT_SYSTEM
+ | MIGRATE_VMA_SELECT_COMPOUND,
};
unsigned long i;
u64 *pfns;
int ret = -ENOMEM;
+ struct nouveau_dmem_dma_info *dma_info;
- if (drm->dmem == NULL)
- return -ENODEV;
+ if (drm->dmem == NULL) {
+ ret = -ENODEV;
+ goto out;
+ }
+
+ if (IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE))
+ if (max > (unsigned long)HPAGE_PMD_NR)
+ max = (unsigned long)HPAGE_PMD_NR;
args.src = kcalloc(max, sizeof(*args.src), GFP_KERNEL);
if (!args.src)
if (!args.dst)
goto out_free_src;
- dma_addrs = kmalloc_array(max, sizeof(*dma_addrs), GFP_KERNEL);
- if (!dma_addrs)
+ dma_info = kmalloc_array(max, sizeof(*dma_info), GFP_KERNEL);
+ if (!dma_info)
goto out_free_dst;
pfns = nouveau_pfns_alloc(max);
goto out_free_pfns;
if (args.cpages)
- nouveau_dmem_migrate_chunk(drm, svmm, &args, dma_addrs,
+ nouveau_dmem_migrate_chunk(drm, svmm, &args, dma_info,
pfns);
args.start = args.end;
}
out_free_pfns:
nouveau_pfns_free(pfns);
out_free_dma:
- kfree(dma_addrs);
+ kfree(dma_info);
out_free_dst:
kfree(args.dst);
out_free_src:
projects / users / jedix / linux-maple.git / commitdiff