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drm/amdgpu: only enable swiotlb alloc when need v2

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get the max io mapping address of system memory to see if it is over
our card accessing range.
v2: move checking later

Signed-off-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Monk Liu <monk.liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180209024410.1469-2-david1.zhou@amd.com
This commit is contained in:
Chunming Zhou 2018-02-09 10:44:09 +08:00 committed by Alex Deucher
parent 82626363a2
commit fd5fd480dd
6 changed files with 13 additions and 3 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

1
drivers/gpu/drm/amd/amdgpu/amdgpu.h
View file

@ -1504,6 +1504,7 @@ struct amdgpu_device {
const struct amdgpu_asic_funcs *asic_funcs;
bool shutdown;
bool need_dma32;
bool need_swiotlb;
bool accel_working;
struct work_struct reset_work;
struct notifier_block acpi_nb;

6
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
View file

@ -1018,7 +1018,7 @@ static int amdgpu_ttm_tt_populate(struct ttm_tt *ttm,
}
#ifdef CONFIG_SWIOTLB
if (swiotlb_nr_tbl()) {
if (adev->need_swiotlb && swiotlb_nr_tbl()) {
return ttm_dma_populate(&gtt->ttm, adev->dev, ctx);
}
#endif
@ -1045,7 +1045,7 @@ static void amdgpu_ttm_tt_unpopulate(struct ttm_tt *ttm)
adev = amdgpu_ttm_adev(ttm->bdev);
#ifdef CONFIG_SWIOTLB
if (swiotlb_nr_tbl()) {
if (adev->need_swiotlb && swiotlb_nr_tbl()) {
ttm_dma_unpopulate(&gtt->ttm, adev->dev);
return;
}
@ -2010,7 +2010,7 @@ static int amdgpu_ttm_debugfs_init(struct amdgpu_device *adev)
count = ARRAY_SIZE(amdgpu_ttm_debugfs_list);
#ifdef CONFIG_SWIOTLB
if (!swiotlb_nr_tbl())
if (!(adev->need_swiotlb && swiotlb_nr_tbl()))
--count;
#endif

2
drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
View file

@ -22,6 +22,7 @@
*/
#include <linux/firmware.h>
#include <drm/drmP.h>
#include <drm/drm_cache.h>
#include "amdgpu.h"
#include "gmc_v6_0.h"
#include "amdgpu_ucode.h"
@ -851,6 +852,7 @@ static int gmc_v6_0_sw_init(void *handle)
pci_set_consistent_dma_mask(adev->pdev, DMA_BIT_MASK(32));
dev_warn(adev->dev, "amdgpu: No coherent DMA available.\n");
}
adev->need_swiotlb = drm_get_max_iomem() > ((u64)1 << dma_bits);
r = gmc_v6_0_init_microcode(adev);
if (r) {

2
drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
View file

@ -22,6 +22,7 @@
*/
#include <linux/firmware.h>
#include <drm/drmP.h>
#include <drm/drm_cache.h>
#include "amdgpu.h"
#include "cikd.h"
#include "cik.h"
@ -999,6 +1000,7 @@ static int gmc_v7_0_sw_init(void *handle)
pci_set_consistent_dma_mask(adev->pdev, DMA_BIT_MASK(32));
pr_warn("amdgpu: No coherent DMA available\n");
}
adev->need_swiotlb = drm_get_max_iomem() > ((u64)1 << dma_bits);
r = gmc_v7_0_init_microcode(adev);
if (r) {

3
drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
View file

@ -22,6 +22,7 @@
*/
#include <linux/firmware.h>
#include <drm/drmP.h>
#include <drm/drm_cache.h>
#include "amdgpu.h"
#include "gmc_v8_0.h"
#include "amdgpu_ucode.h"
@ -1085,6 +1086,7 @@ static int gmc_v8_0_sw_init(void *handle)
*/
adev->need_dma32 = false;
dma_bits = adev->need_dma32 ? 32 : 40;
adev->need_swiotlb = drm_get_max_iomem() > ((u64)1 << dma_bits);
r = pci_set_dma_mask(adev->pdev, DMA_BIT_MASK(dma_bits));
if (r) {
adev->need_dma32 = true;
@ -1096,6 +1098,7 @@ static int gmc_v8_0_sw_init(void *handle)
pci_set_consistent_dma_mask(adev->pdev, DMA_BIT_MASK(32));
pr_warn("amdgpu: No coherent DMA available\n");
}
adev->need_swiotlb = drm_get_max_iomem() > ((u64)1 << dma_bits);
r = gmc_v8_0_init_microcode(adev);
if (r) {

2
drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
View file

@ -21,6 +21,7 @@
*
*/
#include <linux/firmware.h>
#include <drm/drm_cache.h>
#include "amdgpu.h"
#include "gmc_v9_0.h"
#include "amdgpu_atomfirmware.h"
@ -850,6 +851,7 @@ static int gmc_v9_0_sw_init(void *handle)
pci_set_consistent_dma_mask(adev->pdev, DMA_BIT_MASK(32));
printk(KERN_WARNING "amdgpu: No coherent DMA available.\n");
}
adev->need_swiotlb = drm_get_max_iomem() > ((u64)1 << dma_bits);
r = gmc_v9_0_mc_init(adev);
if (r)