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gpu: nvgpu: Rely on own dma attribute handling

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Tegra kernel abstracts Linux 4.4 vs Linux 4.9 differences from
drivers. Upstream kernel does not provide that facility, so add
nvgpu internal way of dealing with the differences.

JIRA NVGPU-4

Change-Id: I8289fdcf98873de14398bffc808d89a675f2aa15
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1648160
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Terje Bergstrom
2018-01-29 12:34:57 -08:00
committed by mobile promotions
parent dc110896cd
commit cb54d7ca8f
1 changed files with 19 additions and 9 deletions
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28
drivers/gpu/nvgpu/common/linux/dma.c
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@@ -14,7 +14,6 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/dma-attrs.h>
#include <linux/dma-mapping.h>
#include <linux/version.h>
@@ -35,6 +34,17 @@
#include "platform_gk20a.h"
#include "os_linux.h"
#ifdef __DMA_ATTRS_LONGS
#define NVGPU_DEFINE_DMA_ATTRS(x) \
struct dma_attrs x = { \
.flags = { [0 ... __DMA_ATTRS_LONGS-1] = 0 }, \
}
#define NVGPU_DMA_ATTR(attrs) &attrs
#else
#define NVGPU_DEFINE_DMA_ATTRS(attrs) unsigned long attrs = 0
#define NVGPU_DMA_ATTR(attrs) attrs
#endif
/*
* Enough to hold all the possible flags in string form. When a new flag is
* added it must be added here as well!!
@@ -211,7 +221,7 @@ int nvgpu_dma_alloc_flags_sys(struct gk20a *g, unsigned long flags,
struct device *d = dev_from_gk20a(g);
int err;
dma_addr_t iova;
DEFINE_DMA_ATTRS(dma_attrs);
NVGPU_DEFINE_DMA_ATTRS(dma_attrs);
void *alloc_ret;
/*
@@ -233,7 +243,7 @@ int nvgpu_dma_alloc_flags_sys(struct gk20a *g, unsigned long flags,
alloc_ret = dma_alloc_attrs(d, size, &iova,
GFP_KERNEL|__GFP_ZERO,
__DMA_ATTR(dma_attrs));
NVGPU_DMA_ATTR(dma_attrs));
if (!alloc_ret)
return -ENOMEM;
@@ -260,7 +270,7 @@ int nvgpu_dma_alloc_flags_sys(struct gk20a *g, unsigned long flags,
fail_free:
g->dma_memory_used -= mem->aligned_size;
dma_free_attrs(d, size, alloc_ret, iova, __DMA_ATTR(dma_attrs));
dma_free_attrs(d, size, alloc_ret, iova, NVGPU_DMA_ATTR(dma_attrs));
mem->cpu_va = NULL;
mem->priv.sgt = NULL;
mem->size = 0;
@@ -460,18 +470,18 @@ static void nvgpu_dma_free_sys(struct gk20a *g, struct nvgpu_mem *mem)
!(mem->mem_flags & __NVGPU_MEM_FLAG_NO_DMA) &&
(mem->cpu_va || mem->priv.pages)) {
if (mem->priv.flags) {
DEFINE_DMA_ATTRS(dma_attrs);
NVGPU_DEFINE_DMA_ATTRS(dma_attrs);
nvgpu_dma_flags_to_attrs(&dma_attrs, mem->priv.flags);
if (mem->priv.flags & NVGPU_DMA_NO_KERNEL_MAPPING) {
dma_free_attrs(d, mem->aligned_size, mem->priv.pages,
sg_dma_address(mem->priv.sgt->sgl),
__DMA_ATTR(dma_attrs));
NVGPU_DMA_ATTR(dma_attrs));
} else {
dma_free_attrs(d, mem->aligned_size, mem->cpu_va,
sg_dma_address(mem->priv.sgt->sgl),
__DMA_ATTR(dma_attrs));
NVGPU_DMA_ATTR(dma_attrs));
}
} else {
dma_free_coherent(d, mem->aligned_size, mem->cpu_va,
@@ -563,7 +573,7 @@ int nvgpu_get_sgtable_attrs(struct gk20a *g, struct sg_table **sgt,
{
int err = 0;
struct sg_table *tbl;
DEFINE_DMA_ATTRS(dma_attrs);
NVGPU_DEFINE_DMA_ATTRS(dma_attrs);
tbl = nvgpu_kzalloc(g, sizeof(struct sg_table));
if (!tbl) {
@@ -573,7 +583,7 @@ int nvgpu_get_sgtable_attrs(struct gk20a *g, struct sg_table **sgt,
nvgpu_dma_flags_to_attrs(&dma_attrs, flags);
err = dma_get_sgtable_attrs(dev_from_gk20a(g), tbl, cpuva, iova,
size, __DMA_ATTR(dma_attrs));
size, NVGPU_DMA_ATTR(dma_attrs));
if (err)
goto fail;