-----Original Message----- From: dri-devel dri-devel-bounces@lists.freedesktop.org On Behalf Of Dave Airlie Sent: Monday, July 27, 2020 11:26 PM To: dri-devel@lists.freedesktop.org Cc: bskeggs@redhat.com Subject: [PATCH] nouveau: use ttm populate mapping functions. (v2)
From: Dave Airlie airlied@redhat.com
Instead of rolling driver copies of them.
v2: cleanup return handling (Ben) Signed-off-by: Dave Airlie airlied@redhat.com
drivers/gpu/drm/nouveau/nouveau_bo.c | 38 ++-------------------------- 1 file changed, 2 insertions(+), 36 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c index 7806278dce57..6ef5085c9a91 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bo.c +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c @@ -1231,8 +1231,6 @@ nouveau_ttm_tt_populate(struct ttm_tt *ttm, struct ttm_operation_ctx *ctx) struct ttm_dma_tt *ttm_dma = (void *)ttm; struct nouveau_drm *drm; struct device *dev;
unsigned i;
int r; bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
if (ttm->state != tt_unpopulated)
@@ -1260,31 +1258,7 @@ nouveau_ttm_tt_populate(struct ttm_tt *ttm, struct ttm_operation_ctx *ctx) return ttm_dma_populate((void *)ttm, dev, ctx); } #endif
- r = ttm_pool_populate(ttm, ctx);
- if (r) {
return r;- }
- for (i = 0; i < ttm->num_pages; i++) {
dma_addr_t addr;addr = dma_map_page(dev, ttm->pages[i], 0, PAGE_SIZE,DMA_BIDIRECTIONAL);if (dma_mapping_error(dev, addr)) {while (i--) {dma_unmap_page(dev, ttm_dma-dma_address[i],
PAGE_SIZE,DMA_BIDIRECTIONAL);
ttm_dma->dma_address[i] = 0;}ttm_pool_unpopulate(ttm);return -EFAULT;}ttm_dma->dma_address[i] = addr;- }
- return 0;
- return ttm_populate_and_map_pages(dev, ttm_dma, ctx);
This is not a completely straight code replacement.
ttm_populate_and_map_pages() also has code to deal with pages that are contiguous (consolidates them).
Is it possible that the nouveau HW can't handle a contiguous buffer larger than PAG_SIZE?
Thanks,
Mike
}
static void @@ -1293,7 +1267,6 @@ nouveau_ttm_tt_unpopulate(struct ttm_tt *ttm) struct ttm_dma_tt *ttm_dma = (void *)ttm; struct nouveau_drm *drm; struct device *dev;
unsigned i; bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
if (slave)
@@ -1316,14 +1289,7 @@ nouveau_ttm_tt_unpopulate(struct ttm_tt *ttm) } #endif
- for (i = 0; i < ttm->num_pages; i++) {
if (ttm_dma->dma_address[i]) {dma_unmap_page(dev, ttm_dma->dma_address[i],PAGE_SIZE,
DMA_BIDIRECTIONAL);}- }
- ttm_pool_unpopulate(ttm);
- ttm_unmap_and_unpopulate_pages(dev, ttm_dma);
}
void
2.26.2
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