* [PATCH 1/4] drm/amdgpu: Add KFD VRAM limit checking
[not found] ` <1542769636-2976-1-git-send-email-Felix.Kuehling-5C7GfCeVMHo@public.gmane.org>
@ 2018-11-21 3:07 ` Kuehling, Felix
2018-11-21 3:07 ` [PATCH 2/4] drm/amdkfd: Add NULL-pointer check Kuehling, Felix
` (3 subsequent siblings)
4 siblings, 0 replies; 7+ messages in thread
From: Kuehling, Felix @ 2018-11-21 3:07 UTC (permalink / raw)
To: amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org,
oded.gabbay-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
Cc: Kuehling, Felix
We don't want KFD processes evicting each other over VRAM usage.
Therefore prevent overcommitting VRAM among KFD applications with
a per-GPU limit. Also leave enough room for page tables on top
of the application memory usage.
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Eric Huang <JinHuiEric.Huang@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu.h | 7 +--
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c | 52 ++++++++++++--------
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h | 8 +++-
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 60 ++++++++++++------------
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 2 +-
5 files changed, 75 insertions(+), 54 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 2c80453..40e084a9 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -81,6 +81,7 @@
#include "amdgpu_job.h"
#include "amdgpu_bo_list.h"
#include "amdgpu_gem.h"
+#include "amdgpu_amdkfd.h"
#define MAX_GPU_INSTANCE 16
@@ -979,6 +980,9 @@ struct amdgpu_device {
/* GDS */
struct amdgpu_gds gds;
+ /* KFD */
+ struct amdgpu_kfd_dev kfd;
+
/* display related functionality */
struct amdgpu_display_manager dm;
@@ -992,9 +996,6 @@ struct amdgpu_device {
atomic64_t visible_pin_size;
atomic64_t gart_pin_size;
- /* amdkfd interface */
- struct kfd_dev *kfd;
-
/* soc15 register offset based on ip, instance and segment */
uint32_t *reg_offset[MAX_HWIP][HWIP_MAX_INSTANCE];
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
index 1c1fed6..274099a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
@@ -31,10 +31,20 @@ const struct kgd2kfd_calls *kgd2kfd;
static const unsigned int compute_vmid_bitmap = 0xFF00;
+/* Total memory size in system memory and all GPU VRAM. Used to
+ * estimate worst case amount of memory to reserve for page tables
+ */
+uint64_t amdgpu_amdkfd_total_mem_size;
+
int amdgpu_amdkfd_init(void)
{
+ struct sysinfo si;
int ret;
+ si_meminfo(&si);
+ amdgpu_amdkfd_total_mem_size = si.totalram - si.totalhigh;
+ amdgpu_amdkfd_total_mem_size *= si.mem_unit;
+
#ifdef CONFIG_HSA_AMD
ret = kgd2kfd_init(KFD_INTERFACE_VERSION, &kgd2kfd);
if (ret)
@@ -87,8 +97,11 @@ void amdgpu_amdkfd_device_probe(struct amdgpu_device *adev)
return;
}
- adev->kfd = kgd2kfd->probe((struct kgd_dev *)adev,
- adev->pdev, kfd2kgd);
+ adev->kfd.dev = kgd2kfd->probe((struct kgd_dev *)adev,
+ adev->pdev, kfd2kgd);
+
+ if (adev->kfd.dev)
+ amdgpu_amdkfd_total_mem_size += adev->gmc.real_vram_size;
}
/**
@@ -128,7 +141,8 @@ void amdgpu_amdkfd_device_init(struct amdgpu_device *adev)
{
int i, n;
int last_valid_bit;
- if (adev->kfd) {
+
+ if (adev->kfd.dev) {
struct kgd2kfd_shared_resources gpu_resources = {
.compute_vmid_bitmap = compute_vmid_bitmap,
.num_pipe_per_mec = adev->gfx.mec.num_pipe_per_mec,
@@ -167,7 +181,7 @@ void amdgpu_amdkfd_device_init(struct amdgpu_device *adev)
&gpu_resources.doorbell_start_offset);
if (adev->asic_type < CHIP_VEGA10) {
- kgd2kfd->device_init(adev->kfd, &gpu_resources);
+ kgd2kfd->device_init(adev->kfd.dev, &gpu_resources);
return;
}
@@ -207,37 +221,37 @@ void amdgpu_amdkfd_device_init(struct amdgpu_device *adev)
gpu_resources.reserved_doorbell_mask = 0x1e0;
gpu_resources.reserved_doorbell_val = 0x0e0;
- kgd2kfd->device_init(adev->kfd, &gpu_resources);
+ kgd2kfd->device_init(adev->kfd.dev, &gpu_resources);
}
}
void amdgpu_amdkfd_device_fini(struct amdgpu_device *adev)
{
- if (adev->kfd) {
- kgd2kfd->device_exit(adev->kfd);
- adev->kfd = NULL;
+ if (adev->kfd.dev) {
+ kgd2kfd->device_exit(adev->kfd.dev);
+ adev->kfd.dev = NULL;
}
}
void amdgpu_amdkfd_interrupt(struct amdgpu_device *adev,
const void *ih_ring_entry)
{
- if (adev->kfd)
- kgd2kfd->interrupt(adev->kfd, ih_ring_entry);
+ if (adev->kfd.dev)
+ kgd2kfd->interrupt(adev->kfd.dev, ih_ring_entry);
}
void amdgpu_amdkfd_suspend(struct amdgpu_device *adev)
{
- if (adev->kfd)
- kgd2kfd->suspend(adev->kfd);
+ if (adev->kfd.dev)
+ kgd2kfd->suspend(adev->kfd.dev);
}
int amdgpu_amdkfd_resume(struct amdgpu_device *adev)
{
int r = 0;
- if (adev->kfd)
- r = kgd2kfd->resume(adev->kfd);
+ if (adev->kfd.dev)
+ r = kgd2kfd->resume(adev->kfd.dev);
return r;
}
@@ -246,8 +260,8 @@ int amdgpu_amdkfd_pre_reset(struct amdgpu_device *adev)
{
int r = 0;
- if (adev->kfd)
- r = kgd2kfd->pre_reset(adev->kfd);
+ if (adev->kfd.dev)
+ r = kgd2kfd->pre_reset(adev->kfd.dev);
return r;
}
@@ -256,8 +270,8 @@ int amdgpu_amdkfd_post_reset(struct amdgpu_device *adev)
{
int r = 0;
- if (adev->kfd)
- r = kgd2kfd->post_reset(adev->kfd);
+ if (adev->kfd.dev)
+ r = kgd2kfd->post_reset(adev->kfd.dev);
return r;
}
@@ -512,7 +526,7 @@ void amdgpu_amdkfd_set_compute_idle(struct kgd_dev *kgd, bool idle)
bool amdgpu_amdkfd_is_kfd_vmid(struct amdgpu_device *adev, u32 vmid)
{
- if (adev->kfd) {
+ if (adev->kfd.dev) {
if ((1 << vmid) & compute_vmid_bitmap)
return true;
}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
index bcf587b..4d766cb 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
@@ -35,6 +35,7 @@
#include "amdgpu_vm.h"
extern const struct kgd2kfd_calls *kgd2kfd;
+extern uint64_t amdgpu_amdkfd_total_mem_size;
struct amdgpu_device;
@@ -77,6 +78,11 @@ struct amdgpu_amdkfd_fence {
char timeline_name[TASK_COMM_LEN];
};
+struct amdgpu_kfd_dev {
+ struct kfd_dev *dev;
+ uint64_t vram_used;
+};
+
struct amdgpu_amdkfd_fence *amdgpu_amdkfd_fence_create(u64 context,
struct mm_struct *mm);
bool amdkfd_fence_check_mm(struct dma_fence *f, struct mm_struct *mm);
@@ -196,6 +202,6 @@ int amdgpu_amdkfd_gpuvm_get_vm_fault_info(struct kgd_dev *kgd,
struct kfd_vm_fault_info *info);
void amdgpu_amdkfd_gpuvm_init_mem_limits(void);
-void amdgpu_amdkfd_unreserve_system_memory_limit(struct amdgpu_bo *bo);
+void amdgpu_amdkfd_unreserve_memory_limit(struct amdgpu_bo *bo);
#endif /* AMDGPU_AMDKFD_H_INCLUDED */
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
index f3129b9..fca8788 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
@@ -110,17 +110,17 @@ void amdgpu_amdkfd_gpuvm_init_mem_limits(void)
(kfd_mem_limit.max_ttm_mem_limit >> 20));
}
-static int amdgpu_amdkfd_reserve_system_mem_limit(struct amdgpu_device *adev,
+static int amdgpu_amdkfd_reserve_mem_limit(struct amdgpu_device *adev,
uint64_t size, u32 domain, bool sg)
{
- size_t acc_size, system_mem_needed, ttm_mem_needed;
+ size_t acc_size, system_mem_needed, ttm_mem_needed, vram_needed;
+ uint64_t reserved_for_pt = amdgpu_amdkfd_total_mem_size >> 9;
int ret = 0;
acc_size = ttm_bo_dma_acc_size(&adev->mman.bdev, size,
sizeof(struct amdgpu_bo));
- spin_lock(&kfd_mem_limit.mem_limit_lock);
-
+ vram_needed = 0;
if (domain == AMDGPU_GEM_DOMAIN_GTT) {
/* TTM GTT memory */
system_mem_needed = acc_size + size;
@@ -133,23 +133,30 @@ static int amdgpu_amdkfd_reserve_system_mem_limit(struct amdgpu_device *adev,
/* VRAM and SG */
system_mem_needed = acc_size;
ttm_mem_needed = acc_size;
+ if (domain == AMDGPU_GEM_DOMAIN_VRAM)
+ vram_needed = size;
}
+ spin_lock(&kfd_mem_limit.mem_limit_lock);
+
if ((kfd_mem_limit.system_mem_used + system_mem_needed >
- kfd_mem_limit.max_system_mem_limit) ||
- (kfd_mem_limit.ttm_mem_used + ttm_mem_needed >
- kfd_mem_limit.max_ttm_mem_limit))
+ kfd_mem_limit.max_system_mem_limit) ||
+ (kfd_mem_limit.ttm_mem_used + ttm_mem_needed >
+ kfd_mem_limit.max_ttm_mem_limit) ||
+ (adev->kfd.vram_used + vram_needed >
+ adev->gmc.real_vram_size - reserved_for_pt)) {
ret = -ENOMEM;
- else {
+ } else {
kfd_mem_limit.system_mem_used += system_mem_needed;
kfd_mem_limit.ttm_mem_used += ttm_mem_needed;
+ adev->kfd.vram_used += vram_needed;
}
spin_unlock(&kfd_mem_limit.mem_limit_lock);
return ret;
}
-static void unreserve_system_mem_limit(struct amdgpu_device *adev,
+static void unreserve_mem_limit(struct amdgpu_device *adev,
uint64_t size, u32 domain, bool sg)
{
size_t acc_size;
@@ -167,6 +174,11 @@ static void unreserve_system_mem_limit(struct amdgpu_device *adev,
} else {
kfd_mem_limit.system_mem_used -= acc_size;
kfd_mem_limit.ttm_mem_used -= acc_size;
+ if (domain == AMDGPU_GEM_DOMAIN_VRAM) {
+ adev->kfd.vram_used -= size;
+ WARN_ONCE(adev->kfd.vram_used < 0,
+ "kfd VRAM memory accounting unbalanced");
+ }
}
WARN_ONCE(kfd_mem_limit.system_mem_used < 0,
"kfd system memory accounting unbalanced");
@@ -176,29 +188,18 @@ static void unreserve_system_mem_limit(struct amdgpu_device *adev,
spin_unlock(&kfd_mem_limit.mem_limit_lock);
}
-void amdgpu_amdkfd_unreserve_system_memory_limit(struct amdgpu_bo *bo)
+void amdgpu_amdkfd_unreserve_memory_limit(struct amdgpu_bo *bo)
{
- spin_lock(&kfd_mem_limit.mem_limit_lock);
+ struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
+ u32 domain = bo->preferred_domains;
+ bool sg = (bo->preferred_domains == AMDGPU_GEM_DOMAIN_CPU);
if (bo->flags & AMDGPU_AMDKFD_USERPTR_BO) {
- kfd_mem_limit.system_mem_used -=
- (bo->tbo.acc_size + amdgpu_bo_size(bo));
- kfd_mem_limit.ttm_mem_used -= bo->tbo.acc_size;
- } else if (bo->preferred_domains == AMDGPU_GEM_DOMAIN_GTT) {
- kfd_mem_limit.system_mem_used -=
- (bo->tbo.acc_size + amdgpu_bo_size(bo));
- kfd_mem_limit.ttm_mem_used -=
- (bo->tbo.acc_size + amdgpu_bo_size(bo));
- } else {
- kfd_mem_limit.system_mem_used -= bo->tbo.acc_size;
- kfd_mem_limit.ttm_mem_used -= bo->tbo.acc_size;
+ domain = AMDGPU_GEM_DOMAIN_CPU;
+ sg = false;
}
- WARN_ONCE(kfd_mem_limit.system_mem_used < 0,
- "kfd system memory accounting unbalanced");
- WARN_ONCE(kfd_mem_limit.ttm_mem_used < 0,
- "kfd TTM memory accounting unbalanced");
- spin_unlock(&kfd_mem_limit.mem_limit_lock);
+ unreserve_mem_limit(adev, amdgpu_bo_size(bo), domain, sg);
}
@@ -1235,8 +1236,7 @@ int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
amdgpu_sync_create(&(*mem)->sync);
- ret = amdgpu_amdkfd_reserve_system_mem_limit(adev, size,
- alloc_domain, false);
+ ret = amdgpu_amdkfd_reserve_mem_limit(adev, size, alloc_domain, false);
if (ret) {
pr_debug("Insufficient system memory\n");
goto err_reserve_limit;
@@ -1289,7 +1289,7 @@ int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
/* Don't unreserve system mem limit twice */
goto err_reserve_limit;
err_bo_create:
- unreserve_system_mem_limit(adev, size, alloc_domain, false);
+ unreserve_mem_limit(adev, size, alloc_domain, false);
err_reserve_limit:
mutex_destroy(&(*mem)->lock);
kfree(*mem);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index 904014d..2726773 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -81,7 +81,7 @@ static void amdgpu_bo_destroy(struct ttm_buffer_object *tbo)
amdgpu_bo_subtract_pin_size(bo);
if (bo->kfd_bo)
- amdgpu_amdkfd_unreserve_system_memory_limit(bo);
+ amdgpu_amdkfd_unreserve_memory_limit(bo);
amdgpu_bo_kunmap(bo);
--
2.7.4
_______________________________________________
amd-gfx mailing list
amd-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/amd-gfx
^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH 2/4] drm/amdkfd: Add NULL-pointer check
[not found] ` <1542769636-2976-1-git-send-email-Felix.Kuehling-5C7GfCeVMHo@public.gmane.org>
2018-11-21 3:07 ` [PATCH 1/4] drm/amdgpu: Add KFD VRAM limit checking Kuehling, Felix
@ 2018-11-21 3:07 ` Kuehling, Felix
2018-11-21 3:07 ` [PATCH 3/4] drm/amdkfd: Add DMABuf import functionality Kuehling, Felix
` (2 subsequent siblings)
4 siblings, 0 replies; 7+ messages in thread
From: Kuehling, Felix @ 2018-11-21 3:07 UTC (permalink / raw)
To: amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org,
oded.gabbay-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
Cc: Kuehling, Felix
top_dev->gpu is NULL for CPUs. Avoid dereferencing it if NULL.
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
---
drivers/gpu/drm/amd/amdkfd/kfd_topology.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
index aa793fc..c5ed21e 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
@@ -101,7 +101,7 @@ struct kfd_dev *kfd_device_by_pci_dev(const struct pci_dev *pdev)
down_read(&topology_lock);
list_for_each_entry(top_dev, &topology_device_list, list)
- if (top_dev->gpu->pdev == pdev) {
+ if (top_dev->gpu && top_dev->gpu->pdev == pdev) {
device = top_dev->gpu;
break;
}
--
2.7.4
_______________________________________________
amd-gfx mailing list
amd-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/amd-gfx
^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH 3/4] drm/amdkfd: Add DMABuf import functionality
[not found] ` <1542769636-2976-1-git-send-email-Felix.Kuehling-5C7GfCeVMHo@public.gmane.org>
2018-11-21 3:07 ` [PATCH 1/4] drm/amdgpu: Add KFD VRAM limit checking Kuehling, Felix
2018-11-21 3:07 ` [PATCH 2/4] drm/amdkfd: Add NULL-pointer check Kuehling, Felix
@ 2018-11-21 3:07 ` Kuehling, Felix
2018-11-21 3:07 ` [PATCH 4/4] drm/amdkfd: Add support for doorbell BOs Kuehling, Felix
2018-12-04 0:05 ` [PATCH 0/4] KFD upstreaming Nov 2018, part 2 Kuehling, Felix
4 siblings, 0 replies; 7+ messages in thread
From: Kuehling, Felix @ 2018-11-21 3:07 UTC (permalink / raw)
To: amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org,
oded.gabbay-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
Cc: Kuehling, Felix
This is used for interoperability between ROCm compute and graphics
APIs. It allows importing graphics driver BOs into the ROCm SVM
address space for zero-copy GPU access.
The API is split into two steps (query and import) to allow user mode
to manage the virtual address space allocation for the imported buffer.
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c | 57 +++++++++++
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h | 11 +++
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 55 +++++++++++
drivers/gpu/drm/amd/amdgpu/amdgpu_gem.h | 2 +
drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c | 4 +-
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 118 ++++++++++++++++++++++-
drivers/gpu/drm/amd/amdkfd/kfd_priv.h | 1 +
drivers/gpu/drm/amd/amdkfd/kfd_topology.c | 18 ++++
include/uapi/linux/kfd_ioctl.h | 26 ++++-
9 files changed, 287 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
index 274099a..44b8a12 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
@@ -26,6 +26,7 @@
#include "amdgpu.h"
#include "amdgpu_gfx.h"
#include <linux/module.h>
+#include <linux/dma-buf.h>
const struct kgd2kfd_calls *kgd2kfd;
@@ -444,6 +445,62 @@ void amdgpu_amdkfd_get_cu_info(struct kgd_dev *kgd, struct kfd_cu_info *cu_info)
cu_info->lds_size = acu_info.lds_size;
}
+int amdgpu_amdkfd_get_dmabuf_info(struct kgd_dev *kgd, int dma_buf_fd,
+ struct kgd_dev **dma_buf_kgd,
+ uint64_t *bo_size, void *metadata_buffer,
+ size_t buffer_size, uint32_t *metadata_size,
+ uint32_t *flags)
+{
+ struct amdgpu_device *adev = (struct amdgpu_device *)kgd;
+ struct dma_buf *dma_buf;
+ struct drm_gem_object *obj;
+ struct amdgpu_bo *bo;
+ uint64_t metadata_flags;
+ int r = -EINVAL;
+
+ dma_buf = dma_buf_get(dma_buf_fd);
+ if (IS_ERR(dma_buf))
+ return PTR_ERR(dma_buf);
+
+ if (dma_buf->ops != &amdgpu_dmabuf_ops)
+ /* Can't handle non-graphics buffers */
+ goto out_put;
+
+ obj = dma_buf->priv;
+ if (obj->dev->driver != adev->ddev->driver)
+ /* Can't handle buffers from different drivers */
+ goto out_put;
+
+ adev = obj->dev->dev_private;
+ bo = gem_to_amdgpu_bo(obj);
+ if (!(bo->preferred_domains & (AMDGPU_GEM_DOMAIN_VRAM |
+ AMDGPU_GEM_DOMAIN_GTT)))
+ /* Only VRAM and GTT BOs are supported */
+ goto out_put;
+
+ r = 0;
+ if (dma_buf_kgd)
+ *dma_buf_kgd = (struct kgd_dev *)adev;
+ if (bo_size)
+ *bo_size = amdgpu_bo_size(bo);
+ if (metadata_size)
+ *metadata_size = bo->metadata_size;
+ if (metadata_buffer)
+ r = amdgpu_bo_get_metadata(bo, metadata_buffer, buffer_size,
+ metadata_size, &metadata_flags);
+ if (flags) {
+ *flags = (bo->preferred_domains & AMDGPU_GEM_DOMAIN_VRAM) ?
+ ALLOC_MEM_FLAGS_VRAM : ALLOC_MEM_FLAGS_GTT;
+
+ if (bo->flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED)
+ *flags |= ALLOC_MEM_FLAGS_PUBLIC;
+ }
+
+out_put:
+ dma_buf_put(dma_buf);
+ return r;
+}
+
uint64_t amdgpu_amdkfd_get_vram_usage(struct kgd_dev *kgd)
{
struct amdgpu_device *adev = (struct amdgpu_device *)kgd;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
index 4d766cb..1a84fe2 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
@@ -150,6 +150,11 @@ uint64_t amdgpu_amdkfd_get_gpu_clock_counter(struct kgd_dev *kgd);
uint32_t amdgpu_amdkfd_get_max_engine_clock_in_mhz(struct kgd_dev *kgd);
void amdgpu_amdkfd_get_cu_info(struct kgd_dev *kgd, struct kfd_cu_info *cu_info);
+int amdgpu_amdkfd_get_dmabuf_info(struct kgd_dev *kgd, int dma_buf_fd,
+ struct kgd_dev **dmabuf_kgd,
+ uint64_t *bo_size, void *metadata_buffer,
+ size_t buffer_size, uint32_t *metadata_size,
+ uint32_t *flags);
uint64_t amdgpu_amdkfd_get_vram_usage(struct kgd_dev *kgd);
uint64_t amdgpu_amdkfd_get_hive_id(struct kgd_dev *kgd);
@@ -201,6 +206,12 @@ int amdgpu_amdkfd_gpuvm_restore_process_bos(void *process_info,
int amdgpu_amdkfd_gpuvm_get_vm_fault_info(struct kgd_dev *kgd,
struct kfd_vm_fault_info *info);
+int amdgpu_amdkfd_gpuvm_import_dmabuf(struct kgd_dev *kgd,
+ struct dma_buf *dmabuf,
+ uint64_t va, void *vm,
+ struct kgd_mem **mem, uint64_t *size,
+ uint64_t *mmap_offset);
+
void amdgpu_amdkfd_gpuvm_init_mem_limits(void);
void amdgpu_amdkfd_unreserve_memory_limit(struct amdgpu_bo *bo);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
index fca8788..14f76765 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
@@ -25,6 +25,7 @@
#include <linux/list.h>
#include <linux/pagemap.h>
#include <linux/sched/mm.h>
+#include <linux/dma-buf.h>
#include <drm/drmP.h>
#include "amdgpu_object.h"
#include "amdgpu_vm.h"
@@ -1664,6 +1665,60 @@ int amdgpu_amdkfd_gpuvm_get_vm_fault_info(struct kgd_dev *kgd,
return 0;
}
+int amdgpu_amdkfd_gpuvm_import_dmabuf(struct kgd_dev *kgd,
+ struct dma_buf *dma_buf,
+ uint64_t va, void *vm,
+ struct kgd_mem **mem, uint64_t *size,
+ uint64_t *mmap_offset)
+{
+ struct amdgpu_device *adev = (struct amdgpu_device *)kgd;
+ struct drm_gem_object *obj;
+ struct amdgpu_bo *bo;
+ struct amdgpu_vm *avm = (struct amdgpu_vm *)vm;
+
+ if (dma_buf->ops != &amdgpu_dmabuf_ops)
+ /* Can't handle non-graphics buffers */
+ return -EINVAL;
+
+ obj = dma_buf->priv;
+ if (obj->dev->dev_private != adev)
+ /* Can't handle buffers from other devices */
+ return -EINVAL;
+
+ bo = gem_to_amdgpu_bo(obj);
+ if (!(bo->preferred_domains & (AMDGPU_GEM_DOMAIN_VRAM |
+ AMDGPU_GEM_DOMAIN_GTT)))
+ /* Only VRAM and GTT BOs are supported */
+ return -EINVAL;
+
+ *mem = kzalloc(sizeof(struct kgd_mem), GFP_KERNEL);
+ if (!*mem)
+ return -ENOMEM;
+
+ if (size)
+ *size = amdgpu_bo_size(bo);
+
+ if (mmap_offset)
+ *mmap_offset = amdgpu_bo_mmap_offset(bo);
+
+ INIT_LIST_HEAD(&(*mem)->bo_va_list);
+ mutex_init(&(*mem)->lock);
+ (*mem)->mapping_flags =
+ AMDGPU_VM_PAGE_READABLE | AMDGPU_VM_PAGE_WRITEABLE |
+ AMDGPU_VM_PAGE_EXECUTABLE | AMDGPU_VM_MTYPE_NC;
+
+ (*mem)->bo = amdgpu_bo_ref(bo);
+ (*mem)->va = va;
+ (*mem)->domain = (bo->preferred_domains & AMDGPU_GEM_DOMAIN_VRAM) ?
+ AMDGPU_GEM_DOMAIN_VRAM : AMDGPU_GEM_DOMAIN_GTT;
+ (*mem)->mapped_to_gpu_memory = 0;
+ (*mem)->process_info = avm->process_info;
+ add_kgd_mem_to_kfd_bo_list(*mem, avm->process_info, false);
+ amdgpu_sync_create(&(*mem)->sync);
+
+ return 0;
+}
+
/* Evict a userptr BO by stopping the queues if necessary
*
* Runs in MMU notifier, may be in RECLAIM_FS context. This means it
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.h
index d63daba..f1ddfc5 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.h
@@ -54,6 +54,8 @@ void *amdgpu_gem_prime_vmap(struct drm_gem_object *obj);
void amdgpu_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
int amdgpu_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma);
+extern const struct dma_buf_ops amdgpu_dmabuf_ops;
+
/*
* GEM objects.
*/
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c
index e45e929..2b31f1b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c
@@ -39,8 +39,6 @@
#include <drm/amdgpu_drm.h>
#include <linux/dma-buf.h>
-static const struct dma_buf_ops amdgpu_dmabuf_ops;
-
/**
* amdgpu_gem_prime_get_sg_table - &drm_driver.gem_prime_get_sg_table
* implementation
@@ -332,7 +330,7 @@ static int amdgpu_gem_begin_cpu_access(struct dma_buf *dma_buf,
return ret;
}
-static const struct dma_buf_ops amdgpu_dmabuf_ops = {
+const struct dma_buf_ops amdgpu_dmabuf_ops = {
.attach = amdgpu_gem_map_attach,
.detach = amdgpu_gem_map_detach,
.map_dma_buf = drm_gem_map_dma_buf,
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
index 5f4062b..ae3ae0f 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -33,6 +33,7 @@
#include <linux/time.h>
#include <linux/mm.h>
#include <linux/mman.h>
+#include <linux/dma-buf.h>
#include <asm/processor.h>
#include "kfd_priv.h"
#include "kfd_device_queue_manager.h"
@@ -1550,6 +1551,115 @@ static int kfd_ioctl_unmap_memory_from_gpu(struct file *filep,
return err;
}
+static int kfd_ioctl_get_dmabuf_info(struct file *filep,
+ struct kfd_process *p, void *data)
+{
+ struct kfd_ioctl_get_dmabuf_info_args *args = data;
+ struct kfd_dev *dev = NULL;
+ struct kgd_dev *dma_buf_kgd;
+ void *metadata_buffer = NULL;
+ uint32_t flags;
+ unsigned int i;
+ int r;
+
+ /* Find a KFD GPU device that supports the get_dmabuf_info query */
+ for (i = 0; kfd_topology_enum_kfd_devices(i, &dev) == 0; i++)
+ if (dev)
+ break;
+ if (!dev)
+ return -EINVAL;
+
+ if (args->metadata_ptr) {
+ metadata_buffer = kzalloc(args->metadata_size, GFP_KERNEL);
+ if (!metadata_buffer)
+ return -ENOMEM;
+ }
+
+ /* Get dmabuf info from KGD */
+ r = amdgpu_amdkfd_get_dmabuf_info(dev->kgd, args->dmabuf_fd,
+ &dma_buf_kgd, &args->size,
+ metadata_buffer, args->metadata_size,
+ &args->metadata_size, &flags);
+ if (r)
+ goto exit;
+
+ /* Reverse-lookup gpu_id from kgd pointer */
+ dev = kfd_device_by_kgd(dma_buf_kgd);
+ if (!dev) {
+ r = -EINVAL;
+ goto exit;
+ }
+ args->gpu_id = dev->id;
+ args->flags = flags;
+
+ /* Copy metadata buffer to user mode */
+ if (metadata_buffer) {
+ r = copy_to_user((void __user *)args->metadata_ptr,
+ metadata_buffer, args->metadata_size);
+ if (r != 0)
+ r = -EFAULT;
+ }
+
+exit:
+ kfree(metadata_buffer);
+
+ return r;
+}
+
+static int kfd_ioctl_import_dmabuf(struct file *filep,
+ struct kfd_process *p, void *data)
+{
+ struct kfd_ioctl_import_dmabuf_args *args = data;
+ struct kfd_process_device *pdd;
+ struct dma_buf *dmabuf;
+ struct kfd_dev *dev;
+ int idr_handle;
+ uint64_t size;
+ void *mem;
+ int r;
+
+ dev = kfd_device_by_id(args->gpu_id);
+ if (!dev)
+ return -EINVAL;
+
+ dmabuf = dma_buf_get(args->dmabuf_fd);
+ if (!dmabuf)
+ return -EINVAL;
+
+ mutex_lock(&p->mutex);
+
+ pdd = kfd_bind_process_to_device(dev, p);
+ if (IS_ERR(pdd)) {
+ r = PTR_ERR(pdd);
+ goto err_unlock;
+ }
+
+ r = amdgpu_amdkfd_gpuvm_import_dmabuf(dev->kgd, dmabuf,
+ args->va_addr, pdd->vm,
+ (struct kgd_mem **)&mem, &size,
+ NULL);
+ if (r)
+ goto err_unlock;
+
+ idr_handle = kfd_process_device_create_obj_handle(pdd, mem);
+ if (idr_handle < 0) {
+ r = -EFAULT;
+ goto err_free;
+ }
+
+ mutex_unlock(&p->mutex);
+
+ args->handle = MAKE_HANDLE(args->gpu_id, idr_handle);
+
+ return 0;
+
+err_free:
+ amdgpu_amdkfd_gpuvm_free_memory_of_gpu(dev->kgd, (struct kgd_mem *)mem);
+err_unlock:
+ mutex_unlock(&p->mutex);
+ return r;
+}
+
#define AMDKFD_IOCTL_DEF(ioctl, _func, _flags) \
[_IOC_NR(ioctl)] = {.cmd = ioctl, .func = _func, .flags = _flags, \
.cmd_drv = 0, .name = #ioctl}
@@ -1635,7 +1745,13 @@ static const struct amdkfd_ioctl_desc amdkfd_ioctls[] = {
kfd_ioctl_set_cu_mask, 0),
AMDKFD_IOCTL_DEF(AMDKFD_IOC_GET_QUEUE_WAVE_STATE,
- kfd_ioctl_get_queue_wave_state, 0)
+ kfd_ioctl_get_queue_wave_state, 0),
+
+ AMDKFD_IOCTL_DEF(AMDKFD_IOC_GET_DMABUF_INFO,
+ kfd_ioctl_get_dmabuf_info, 0),
+
+ AMDKFD_IOCTL_DEF(AMDKFD_IOC_IMPORT_DMABUF,
+ kfd_ioctl_import_dmabuf, 0),
};
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
index dec8e64..0689d4c 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h
@@ -793,6 +793,7 @@ struct kfd_topology_device *kfd_topology_device_by_proximity_domain(
struct kfd_topology_device *kfd_topology_device_by_id(uint32_t gpu_id);
struct kfd_dev *kfd_device_by_id(uint32_t gpu_id);
struct kfd_dev *kfd_device_by_pci_dev(const struct pci_dev *pdev);
+struct kfd_dev *kfd_device_by_kgd(const struct kgd_dev *kgd);
int kfd_topology_enum_kfd_devices(uint8_t idx, struct kfd_dev **kdev);
int kfd_numa_node_to_apic_id(int numa_node_id);
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
index c5ed21e..5f5b2ac 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
@@ -111,6 +111,24 @@ struct kfd_dev *kfd_device_by_pci_dev(const struct pci_dev *pdev)
return device;
}
+struct kfd_dev *kfd_device_by_kgd(const struct kgd_dev *kgd)
+{
+ struct kfd_topology_device *top_dev;
+ struct kfd_dev *device = NULL;
+
+ down_read(&topology_lock);
+
+ list_for_each_entry(top_dev, &topology_device_list, list)
+ if (top_dev->gpu && top_dev->gpu->kgd == kgd) {
+ device = top_dev->gpu;
+ break;
+ }
+
+ up_read(&topology_lock);
+
+ return device;
+}
+
/* Called with write topology_lock acquired */
static void kfd_release_topology_device(struct kfd_topology_device *dev)
{
diff --git a/include/uapi/linux/kfd_ioctl.h b/include/uapi/linux/kfd_ioctl.h
index b01eb50..e622fd1 100644
--- a/include/uapi/linux/kfd_ioctl.h
+++ b/include/uapi/linux/kfd_ioctl.h
@@ -398,6 +398,24 @@ struct kfd_ioctl_unmap_memory_from_gpu_args {
__u32 n_success; /* to/from KFD */
};
+struct kfd_ioctl_get_dmabuf_info_args {
+ __u64 size; /* from KFD */
+ __u64 metadata_ptr; /* to KFD */
+ __u32 metadata_size; /* to KFD (space allocated by user)
+ * from KFD (actual metadata size)
+ */
+ __u32 gpu_id; /* from KFD */
+ __u32 flags; /* from KFD (KFD_IOC_ALLOC_MEM_FLAGS) */
+ __u32 dmabuf_fd; /* to KFD */
+};
+
+struct kfd_ioctl_import_dmabuf_args {
+ __u64 va_addr; /* to KFD */
+ __u64 handle; /* from KFD */
+ __u32 gpu_id; /* to KFD */
+ __u32 dmabuf_fd; /* to KFD */
+};
+
#define AMDKFD_IOCTL_BASE 'K'
#define AMDKFD_IO(nr) _IO(AMDKFD_IOCTL_BASE, nr)
#define AMDKFD_IOR(nr, type) _IOR(AMDKFD_IOCTL_BASE, nr, type)
@@ -486,7 +504,13 @@ struct kfd_ioctl_unmap_memory_from_gpu_args {
#define AMDKFD_IOC_GET_QUEUE_WAVE_STATE \
AMDKFD_IOWR(0x1B, struct kfd_ioctl_get_queue_wave_state_args)
+#define AMDKFD_IOC_GET_DMABUF_INFO \
+ AMDKFD_IOWR(0x1C, struct kfd_ioctl_get_dmabuf_info_args)
+
+#define AMDKFD_IOC_IMPORT_DMABUF \
+ AMDKFD_IOWR(0x1D, struct kfd_ioctl_import_dmabuf_args)
+
#define AMDKFD_COMMAND_START 0x01
-#define AMDKFD_COMMAND_END 0x1C
+#define AMDKFD_COMMAND_END 0x1E
#endif
--
2.7.4
_______________________________________________
amd-gfx mailing list
amd-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/amd-gfx
^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH 4/4] drm/amdkfd: Add support for doorbell BOs
[not found] ` <1542769636-2976-1-git-send-email-Felix.Kuehling-5C7GfCeVMHo@public.gmane.org>
` (2 preceding siblings ...)
2018-11-21 3:07 ` [PATCH 3/4] drm/amdkfd: Add DMABuf import functionality Kuehling, Felix
@ 2018-11-21 3:07 ` Kuehling, Felix
2018-12-04 0:05 ` [PATCH 0/4] KFD upstreaming Nov 2018, part 2 Kuehling, Felix
4 siblings, 0 replies; 7+ messages in thread
From: Kuehling, Felix @ 2018-11-21 3:07 UTC (permalink / raw)
To: amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org,
oded.gabbay-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
Cc: Kuehling, Felix
This allows user mode to map doorbell pages into GPUVM address space.
That way GPUs can submit to user mode queues (self-dispatch).
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 59 ++++++++++++++++++++++--
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 6 +++
drivers/gpu/drm/amd/include/kgd_kfd_interface.h | 4 +-
3 files changed, 62 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
index 14f76765..f3ac8e5 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
@@ -887,6 +887,24 @@ static int map_bo_to_gpuvm(struct amdgpu_device *adev,
return ret;
}
+static struct sg_table *create_doorbell_sg(uint64_t addr, uint32_t size)
+{
+ struct sg_table *sg = kmalloc(sizeof(*sg), GFP_KERNEL);
+
+ if (!sg)
+ return NULL;
+ if (sg_alloc_table(sg, 1, GFP_KERNEL)) {
+ kfree(sg);
+ return NULL;
+ }
+ sg->sgl->dma_address = addr;
+ sg->sgl->length = size;
+#ifdef CONFIG_NEED_SG_DMA_LENGTH
+ sg->sgl->dma_length = size;
+#endif
+ return sg;
+}
+
static int process_validate_vms(struct amdkfd_process_info *process_info)
{
struct amdgpu_vm *peer_vm;
@@ -1170,6 +1188,8 @@ int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
{
struct amdgpu_device *adev = get_amdgpu_device(kgd);
struct amdgpu_vm *avm = (struct amdgpu_vm *)vm;
+ enum ttm_bo_type bo_type = ttm_bo_type_device;
+ struct sg_table *sg = NULL;
uint64_t user_addr = 0;
struct amdgpu_bo *bo;
struct amdgpu_bo_param bp;
@@ -1198,13 +1218,25 @@ int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
if (!offset || !*offset)
return -EINVAL;
user_addr = *offset;
+ } else if (flags & ALLOC_MEM_FLAGS_DOORBELL) {
+ domain = AMDGPU_GEM_DOMAIN_GTT;
+ alloc_domain = AMDGPU_GEM_DOMAIN_CPU;
+ bo_type = ttm_bo_type_sg;
+ alloc_flags = 0;
+ if (size > UINT_MAX)
+ return -EINVAL;
+ sg = create_doorbell_sg(*offset, size);
+ if (!sg)
+ return -ENOMEM;
} else {
return -EINVAL;
}
*mem = kzalloc(sizeof(struct kgd_mem), GFP_KERNEL);
- if (!*mem)
- return -ENOMEM;
+ if (!*mem) {
+ ret = -ENOMEM;
+ goto err;
+ }
INIT_LIST_HEAD(&(*mem)->bo_va_list);
mutex_init(&(*mem)->lock);
(*mem)->aql_queue = !!(flags & ALLOC_MEM_FLAGS_AQL_QUEUE_MEM);
@@ -1237,7 +1269,7 @@ int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
amdgpu_sync_create(&(*mem)->sync);
- ret = amdgpu_amdkfd_reserve_mem_limit(adev, size, alloc_domain, false);
+ ret = amdgpu_amdkfd_reserve_mem_limit(adev, size, alloc_domain, !!sg);
if (ret) {
pr_debug("Insufficient system memory\n");
goto err_reserve_limit;
@@ -1251,7 +1283,7 @@ int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
bp.byte_align = byte_align;
bp.domain = alloc_domain;
bp.flags = alloc_flags;
- bp.type = ttm_bo_type_device;
+ bp.type = bo_type;
bp.resv = NULL;
ret = amdgpu_bo_create(adev, &bp, &bo);
if (ret) {
@@ -1259,6 +1291,10 @@ int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
domain_string(alloc_domain), ret);
goto err_bo_create;
}
+ if (bo_type == ttm_bo_type_sg) {
+ bo->tbo.sg = sg;
+ bo->tbo.ttm->sg = sg;
+ }
bo->kfd_bo = *mem;
(*mem)->bo = bo;
if (user_addr)
@@ -1290,10 +1326,15 @@ int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
/* Don't unreserve system mem limit twice */
goto err_reserve_limit;
err_bo_create:
- unreserve_mem_limit(adev, size, alloc_domain, false);
+ unreserve_mem_limit(adev, size, alloc_domain, !!sg);
err_reserve_limit:
mutex_destroy(&(*mem)->lock);
kfree(*mem);
+err:
+ if (sg) {
+ sg_free_table(sg);
+ kfree(sg);
+ }
return ret;
}
@@ -1363,6 +1404,14 @@ int amdgpu_amdkfd_gpuvm_free_memory_of_gpu(
/* Free the sync object */
amdgpu_sync_free(&mem->sync);
+ /* If the SG is not NULL, it's one we created for a doorbell
+ * BO. We need to free it.
+ */
+ if (mem->bo->tbo.sg) {
+ sg_free_table(mem->bo->tbo.sg);
+ kfree(mem->bo->tbo.sg);
+ }
+
/* Free the BO*/
amdgpu_bo_unref(&mem->bo);
mutex_destroy(&mem->lock);
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
index ae3ae0f..3623538 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -1274,6 +1274,12 @@ static int kfd_ioctl_alloc_memory_of_gpu(struct file *filep,
return -EINVAL;
}
+ if (flags & KFD_IOC_ALLOC_MEM_FLAGS_DOORBELL) {
+ if (args->size != kfd_doorbell_process_slice(dev))
+ return -EINVAL;
+ offset = kfd_get_process_doorbells(dev, p);
+ }
+
mutex_lock(&p->mutex);
pdd = kfd_bind_process_to_device(dev, p);
diff --git a/drivers/gpu/drm/amd/include/kgd_kfd_interface.h b/drivers/gpu/drm/amd/include/kgd_kfd_interface.h
index 58ac0b9..8154d67 100644
--- a/drivers/gpu/drm/amd/include/kgd_kfd_interface.h
+++ b/drivers/gpu/drm/amd/include/kgd_kfd_interface.h
@@ -188,8 +188,8 @@ struct tile_config {
*/
#define ALLOC_MEM_FLAGS_VRAM (1 << 0)
#define ALLOC_MEM_FLAGS_GTT (1 << 1)
-#define ALLOC_MEM_FLAGS_USERPTR (1 << 2) /* TODO */
-#define ALLOC_MEM_FLAGS_DOORBELL (1 << 3) /* TODO */
+#define ALLOC_MEM_FLAGS_USERPTR (1 << 2)
+#define ALLOC_MEM_FLAGS_DOORBELL (1 << 3)
/*
* Allocation flags attributes/access options.
--
2.7.4
_______________________________________________
amd-gfx mailing list
amd-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/amd-gfx
^ permalink raw reply related [flat|nested] 7+ messages in thread* Re: [PATCH 0/4] KFD upstreaming Nov 2018, part 2
[not found] ` <1542769636-2976-1-git-send-email-Felix.Kuehling-5C7GfCeVMHo@public.gmane.org>
` (3 preceding siblings ...)
2018-11-21 3:07 ` [PATCH 4/4] drm/amdkfd: Add support for doorbell BOs Kuehling, Felix
@ 2018-12-04 0:05 ` Kuehling, Felix
[not found] ` <f866486f-991d-466d-6594-9e16a8526b71-5C7GfCeVMHo@public.gmane.org>
4 siblings, 1 reply; 7+ messages in thread
From: Kuehling, Felix @ 2018-12-04 0:05 UTC (permalink / raw)
To: amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org,
oded.gabbay-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
Ping. Any comments, R-b, A-b?
On 2018-11-20 10:07 p.m., Kuehling, Felix wrote:
> This round adds support for more ROCm memory manager features:
> * VRAM limit checking to avoid overcommitment
> * DMABuf import for graphics interoperability
> * Support for mapping doorbells into GPUVM address space
>
> Felix Kuehling (4):
> drm/amdgpu: Add KFD VRAM limit checking
> drm/amdkfd: Add NULL-pointer check
> drm/amdkfd: Add DMABuf import functionality
> drm/amdkfd: Add support for doorbell BOs
>
> drivers/gpu/drm/amd/amdgpu/amdgpu.h | 7 +-
> drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c | 109 ++++++++++++---
> drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h | 19 ++-
> drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 170 ++++++++++++++++++-----
> drivers/gpu/drm/amd/amdgpu/amdgpu_gem.h | 2 +
> drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 2 +-
> drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c | 4 +-
> drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 124 ++++++++++++++++-
> drivers/gpu/drm/amd/amdkfd/kfd_priv.h | 1 +
> drivers/gpu/drm/amd/amdkfd/kfd_topology.c | 20 ++-
> drivers/gpu/drm/amd/include/kgd_kfd_interface.h | 4 +-
> include/uapi/linux/kfd_ioctl.h | 26 +++-
> 12 files changed, 423 insertions(+), 65 deletions(-)
>
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