[AMD Official Use Only - General]
Reviewed-and-tested-by: Jiadong Zhu <Jiadong.Zhu@xxxxxxx>
-----Original Message-----
From: amd-gfx <amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of Alex Deucher
Sent: Saturday, June 17, 2023 5:10 AM
To: amd-gfx@xxxxxxxxxxxxxxxxxxxxx
Cc: Deucher, Alexander <Alexander.Deucher@xxxxxxx>
Subject: [PATCH 1/2] drm/amdgpu: make mcbp a per device setting
So we can selectively enable it on certain devices. No intended functional change.
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 19 +++++++++++++++----
drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h | 1 +
drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 4 ++--
drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c | 2 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c | 3 ---
drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c | 4 ++--
drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c | 2 +-
7 files changed, 22 insertions(+), 13 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index f39db4a2c2cf..78c6265fe79b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -2551,7 +2551,7 @@ static int amdgpu_device_ip_init(struct amdgpu_device *adev)
adev->ip_blocks[i].status.hw = true;
/* right after GMC hw init, we create CSA */
- if (amdgpu_mcbp) {
+ if (adev->gfx.mcbp) {
r = amdgpu_allocate_static_csa(adev, &adev->virt.csa_obj,
AMDGPU_GEM_DOMAIN_VRAM |
AMDGPU_GEM_DOMAIN_GTT,
@@ -3672,6 +3672,18 @@ static const struct attribute *amdgpu_dev_attributes[] = {
NULL
};
+static void amdgpu_device_set_mcbp(struct amdgpu_device *adev) {
+ if (amdgpu_mcbp == 1)
+ adev->gfx.mcbp = true;
+
+ if (amdgpu_sriov_vf(adev))
+ adev->gfx.mcbp = true;
+
+ if (adev->gfx.mcbp)
+ DRM_INFO("MCBP is enabled\n");
+}
+
/**
* amdgpu_device_init - initialize the driver
*
@@ -3823,9 +3835,6 @@ int amdgpu_device_init(struct amdgpu_device *adev,
DRM_INFO("register mmio base: 0x%08X\n", (uint32_t)adev->rmmio_base);
DRM_INFO("register mmio size: %u\n", (unsigned)adev->rmmio_size);
- if (amdgpu_mcbp)
- DRM_INFO("MCBP is enabled\n");
-
/*
* Reset domain needs to be present early, before XGMI hive discovered
* (if any) and intitialized to use reset sem and in_gpu reset flag @@ -3851,6 +3860,8 @@ int amdgpu_device_init(struct amdgpu_device *adev,
if (r)
return r;
+ amdgpu_device_set_mcbp(adev);
+
/* Get rid of things like offb */
r = drm_aperture_remove_conflicting_pci_framebuffers(adev->pdev, &amdgpu_kms_driver);
if (r)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
index ce0f7a8ad4b8..a4ff515ce896 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
@@ -434,6 +434,7 @@ struct amdgpu_gfx {
uint16_t xcc_mask;
uint32_t num_xcc_per_xcp;
struct mutex partition_mutex;
+ bool mcbp; /* mid command buffer preemption */
};
struct amdgpu_gfx_ras_reg_entry {
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
index e3531aa3c8bd..cca5a495611f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
@@ -805,7 +805,7 @@ int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
dev_info->ids_flags = 0;
if (adev->flags & AMD_IS_APU)
dev_info->ids_flags |= AMDGPU_IDS_FLAGS_FUSION;
- if (amdgpu_mcbp)
+ if (adev->gfx.mcbp)
dev_info->ids_flags |= AMDGPU_IDS_FLAGS_PREEMPTION;
if (amdgpu_is_tmz(adev))
dev_info->ids_flags |= AMDGPU_IDS_FLAGS_TMZ; @@ -1247,7 +1247,7 @@ int amdgpu_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv)
goto error_vm;
}
- if (amdgpu_mcbp) {
+ if (adev->gfx.mcbp) {
uint64_t csa_addr = amdgpu_csa_vaddr(adev) & AMDGPU_GMC_HOLE_MASK;
r = amdgpu_map_static_csa(adev, &fpriv->vm, adev->virt.csa_obj, diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c
index 78ec3420ef85..dacf281d2b21 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c
@@ -72,7 +72,7 @@ uint64_t amdgpu_sdma_get_csa_mc_addr(struct amdgpu_ring *ring,
int r;
/* don't enable OS preemption on SDMA under SRIOV */
- if (amdgpu_sriov_vf(adev) || vmid == 0 || !amdgpu_mcbp)
+ if (amdgpu_sriov_vf(adev) || vmid == 0 || !adev->gfx.mcbp)
return 0;
if (ring->is_mes_queue) {
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
index 25b4d7f0bd35..41aa853a07d2 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
@@ -66,9 +66,6 @@ void amdgpu_virt_init_setting(struct amdgpu_device *adev)
adev->cg_flags = 0;
adev->pg_flags = 0;
- /* enable mcbp for sriov */
- amdgpu_mcbp = 1;
-
/* Reduce kcq number to 2 to reduce latency */
if (amdgpu_num_kcq == -1)
amdgpu_num_kcq = 2;
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
index be984f8c71c7..44af8022b89f 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
@@ -8307,7 +8307,7 @@ static void gfx_v10_0_ring_emit_ib_gfx(struct amdgpu_ring *ring,
control |= ib->length_dw | (vmid << 24);
- if (amdgpu_mcbp && (ib->flags & AMDGPU_IB_FLAG_PREEMPT)) {
+ if (ring->adev->gfx.mcbp && (ib->flags & AMDGPU_IB_FLAG_PREEMPT)) {
control |= INDIRECT_BUFFER_PRE_ENB(1);
if (flags & AMDGPU_IB_PREEMPTED)
@@ -8482,7 +8482,7 @@ static void gfx_v10_0_ring_emit_cntxcntl(struct amdgpu_ring *ring, {
uint32_t dw2 = 0;
- if (amdgpu_mcbp)
+ if (ring->adev->gfx.mcbp)
gfx_v10_0_ring_emit_ce_meta(ring,
(!amdgpu_sriov_vf(ring->adev) && flags & AMDGPU_IB_PREEMPTED) ? true : false);
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
index 690e121d9dda..3a7af59e83ca 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
@@ -5311,7 +5311,7 @@ static void gfx_v11_0_ring_emit_ib_gfx(struct amdgpu_ring *ring,
control |= ib->length_dw | (vmid << 24);
- if (amdgpu_mcbp && (ib->flags & AMDGPU_IB_FLAG_PREEMPT)) {
+ if (ring->adev->gfx.mcbp && (ib->flags & AMDGPU_IB_FLAG_PREEMPT)) {
control |= INDIRECT_BUFFER_PRE_ENB(1);
if (flags & AMDGPU_IB_PREEMPTED)
--
2.40.1
