Deprecate KFD XGMI peer info calls in favour of calling directly from
simplified XGMI peer info functions.
v2: generalize bandwidth interface to return range in one call
Signed-off-by: Jonathan Kim <jonathan.kim@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c | 42 ----------------
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h | 5 --
drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c | 58 ++++++++++++++++++----
drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.h | 24 +++++++--
drivers/gpu/drm/amd/amdkfd/kfd_crat.c | 27 ++++++----
5 files changed, 84 insertions(+), 72 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
index 0312231b703e..4cec3a873995 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
@@ -555,48 +555,6 @@ int amdgpu_amdkfd_get_dmabuf_info(struct amdgpu_device *adev, int dma_buf_fd,
return r;
}
-uint8_t amdgpu_amdkfd_get_xgmi_hops_count(struct amdgpu_device *dst,
- struct amdgpu_device *src)
-{
- struct amdgpu_device *peer_adev = src;
- struct amdgpu_device *adev = dst;
- int ret = amdgpu_xgmi_get_hops_count(adev, peer_adev);
-
- if (ret < 0) {
- DRM_ERROR("amdgpu: failed to get xgmi hops count between node %d and %d. ret = %d\n",
- adev->gmc.xgmi.physical_node_id,
- peer_adev->gmc.xgmi.physical_node_id, ret);
- ret = 0;
- }
- return (uint8_t)ret;
-}
-
-int amdgpu_amdkfd_get_xgmi_bandwidth_mbytes(struct amdgpu_device *dst,
- struct amdgpu_device *src,
- bool is_min)
-{
- struct amdgpu_device *adev = dst, *peer_adev;
- int num_links;
-
- if (amdgpu_ip_version(adev, GC_HWIP, 0) < IP_VERSION(9, 4, 2))
- return 0;
-
- if (src)
- peer_adev = src;
-
- /* num links returns 0 for indirect peers since indirect route is unknown. */
- num_links = is_min ? 1 : amdgpu_xgmi_get_num_links(adev, peer_adev);
- if (num_links < 0) {
- DRM_ERROR("amdgpu: failed to get xgmi num links between node %d and %d. ret = %d\n",
- adev->gmc.xgmi.physical_node_id,
- peer_adev->gmc.xgmi.physical_node_id, num_links);
- num_links = 0;
- }
-
- /* Aldebaran xGMI DPM is defeatured so assume x16 x 25Gbps for bandwidth. */
- return (num_links * 16 * 25000)/BITS_PER_BYTE;
-}
-
int amdgpu_amdkfd_get_pcie_bandwidth_mbytes(struct amdgpu_device *adev, bool is_min)
{
int num_lanes_shift = (is_min ? ffs(adev->pm.pcie_mlw_mask) :
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
index 55d539967695..b6ca41859b53 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
@@ -254,11 +254,6 @@ int amdgpu_amdkfd_get_dmabuf_info(struct amdgpu_device *adev, int dma_buf_fd,
uint64_t *bo_size, void *metadata_buffer,
size_t buffer_size, uint32_t *metadata_size,
uint32_t *flags, int8_t *xcp_id);
-uint8_t amdgpu_amdkfd_get_xgmi_hops_count(struct amdgpu_device *dst,
- struct amdgpu_device *src);
-int amdgpu_amdkfd_get_xgmi_bandwidth_mbytes(struct amdgpu_device *dst,
- struct amdgpu_device *src,
- bool is_min);
int amdgpu_amdkfd_get_pcie_bandwidth_mbytes(struct amdgpu_device *adev, bool is_min);
int amdgpu_amdkfd_send_close_event_drain_irq(struct amdgpu_device *adev,
uint32_t *payload);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
index c98b6b35cfdf..a4545edfed8e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
@@ -818,28 +818,66 @@ int amdgpu_xgmi_update_topology(struct amdgpu_hive_info *hive, struct amdgpu_dev
* num_hops[2:0] = number of hops
*/
int amdgpu_xgmi_get_hops_count(struct amdgpu_device *adev,
- struct amdgpu_device *peer_adev)
+ struct amdgpu_device *peer_adev)
{
struct psp_xgmi_topology_info *top = &adev->psp.xgmi_context.top_info;
uint8_t num_hops_mask = 0x7;
int i;
+ if (!adev->gmc.xgmi.supported)
+ return 0;
+
for (i = 0 ; i < top->num_nodes; ++i)
if (top->nodes[i].node_id == peer_adev->gmc.xgmi.node_id)
return top->nodes[i].num_hops & num_hops_mask;
- return -EINVAL;
+
+ dev_err(adev->dev, "Failed to get xgmi hops count for peer %d.\n",
+ peer_adev->gmc.xgmi.physical_node_id);
+
+ return 0;
}
-int amdgpu_xgmi_get_num_links(struct amdgpu_device *adev,
- struct amdgpu_device *peer_adev)
+int amdgpu_xgmi_get_bandwidth(struct amdgpu_device *adev, struct amdgpu_device *peer_adev,
+ enum amdgpu_xgmi_bw_mode bw_mode, enum amdgpu_xgmi_bw_unit bw_unit,
+ uint32_t *min_bw, uint32_t *max_bw)
{
- struct psp_xgmi_topology_info *top = &adev->psp.xgmi_context.top_info;
- int i;
+ bool peer_mode = bw_mode == AMDGPU_XGMI_BW_MODE_PER_PEER;
+ int unit_scale = bw_unit == AMDGPU_XGMI_BW_UNIT_MBYTES ? 1000 : 1;
+ int speed = 25, num_lanes = 16, num_links = !peer_mode ? 1 : -1;
- for (i = 0 ; i < top->num_nodes; ++i)
- if (top->nodes[i].node_id == peer_adev->gmc.xgmi.node_id)
- return top->nodes[i].num_links;
- return -EINVAL;
+ *min_bw = 0;
+ *max_bw = 0;
+
+ if (!adev->gmc.xgmi.supported)
+ return -ENODATA;
+
+ if (peer_mode && !peer_adev)
+ return -EINVAL;
+
+ if (peer_mode) {
+ struct psp_xgmi_topology_info *top = &adev->psp.xgmi_context.top_info;
+ int i;
+
+ for (i = 0 ; i < top->num_nodes; ++i) {
+ if (top->nodes[i].node_id != peer_adev->gmc.xgmi.node_id)
+ continue;
+
+ num_links = top->nodes[i].num_links;
+ break;
+ }
+ }
+
+ if (num_links == -1) {
+ dev_err(adev->dev, "Failed to get number of xgmi links for peer %d.\n",
+ peer_adev->gmc.xgmi.physical_node_id);
+ } else if (num_links) {
+ int per_link_bw = (speed * num_lanes * unit_scale)/BITS_PER_BYTE;
+
+ *min_bw = per_link_bw;
+ *max_bw = num_links * per_link_bw;
+ }
+
+ return 0;
}
bool amdgpu_xgmi_get_is_sharing_enabled(struct amdgpu_device *adev,
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.h
index d1282b4c6348..924da0bec509 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.h
@@ -55,6 +55,22 @@ struct amdgpu_pcs_ras_field {
uint32_t pcs_err_shift;
};
+/**
+ * Bandwidth range reporting comes in two modes.
+ *
+ * PER_LINK - range for any xgmi link
+ * PER_PEER - range of max of single xgmi link to max of multiple links based on source peer
+ */
+enum amdgpu_xgmi_bw_mode {
+ AMDGPU_XGMI_BW_MODE_PER_LINK = 0,
+ AMDGPU_XGMI_BW_MODE_PER_PEER
+};
+
+enum amdgpu_xgmi_bw_unit {
+ AMDGPU_XGMI_BW_UNIT_GBYTES = 0,
+ AMDGPU_XGMI_BW_UNIT_MBYTES
+};
+
extern struct amdgpu_xgmi_ras xgmi_ras;
struct amdgpu_hive_info *amdgpu_get_xgmi_hive(struct amdgpu_device *adev);
void amdgpu_put_xgmi_hive(struct amdgpu_hive_info *hive);
@@ -62,10 +78,10 @@ int amdgpu_xgmi_update_topology(struct amdgpu_hive_info *hive, struct amdgpu_dev
int amdgpu_xgmi_add_device(struct amdgpu_device *adev);
int amdgpu_xgmi_remove_device(struct amdgpu_device *adev);
int amdgpu_xgmi_set_pstate(struct amdgpu_device *adev, int pstate);
-int amdgpu_xgmi_get_hops_count(struct amdgpu_device *adev,
- struct amdgpu_device *peer_adev);
-int amdgpu_xgmi_get_num_links(struct amdgpu_device *adev,
- struct amdgpu_device *peer_adev);
+int amdgpu_xgmi_get_hops_count(struct amdgpu_device *adev, struct amdgpu_device *peer_adev);
+int amdgpu_xgmi_get_bandwidth(struct amdgpu_device *adev, struct amdgpu_device *peer_adev,
+ enum amdgpu_xgmi_bw_mode bw_mode, enum amdgpu_xgmi_bw_unit bw_unit,
+ uint32_t *min_bw, uint32_t *max_bw);
bool amdgpu_xgmi_get_is_sharing_enabled(struct amdgpu_device *adev,
struct amdgpu_device *peer_adev);
uint64_t amdgpu_xgmi_get_relative_phy_addr(struct amdgpu_device *adev,
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_crat.c b/drivers/gpu/drm/amd/amdkfd/kfd_crat.c
index 70b3ae0b74fe..4a7180b46b71 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_crat.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_crat.c
@@ -2133,9 +2133,6 @@ static int kfd_fill_gpu_direct_io_link_to_cpu(int *avail_size,
bool ext_cpu = KFD_GC_VERSION(kdev) != IP_VERSION(9, 4, 3);
int mem_bw = 819200, weight = ext_cpu ? KFD_CRAT_XGMI_WEIGHT :
KFD_CRAT_INTRA_SOCKET_WEIGHT;
- uint32_t bandwidth = ext_cpu ? amdgpu_amdkfd_get_xgmi_bandwidth_mbytes(
- kdev->adev, NULL, true) : mem_bw;
-
/*
* with host gpu xgmi link, host can access gpu memory whether
* or not pcie bar type is large, so always create bidirectional
@@ -2144,8 +2141,16 @@ static int kfd_fill_gpu_direct_io_link_to_cpu(int *avail_size,
sub_type_hdr->flags |= CRAT_IOLINK_FLAGS_BI_DIRECTIONAL;
sub_type_hdr->io_interface_type = CRAT_IOLINK_TYPE_XGMI;
sub_type_hdr->weight_xgmi = weight;
- sub_type_hdr->minimum_bandwidth_mbs = bandwidth;
- sub_type_hdr->maximum_bandwidth_mbs = bandwidth;
+ if (ext_cpu) {
+ amdgpu_xgmi_get_bandwidth(kdev->adev, NULL,
+ AMDGPU_XGMI_BW_MODE_PER_LINK,
+ AMDGPU_XGMI_BW_UNIT_MBYTES,
+ &sub_type_hdr->minimum_bandwidth_mbs,
+ &sub_type_hdr->maximum_bandwidth_mbs);
+ } else {
+ sub_type_hdr->minimum_bandwidth_mbs = mem_bw;
+ sub_type_hdr->maximum_bandwidth_mbs = mem_bw;
+ }
} else {
sub_type_hdr->io_interface_type = CRAT_IOLINK_TYPE_PCIEXPRESS;
sub_type_hdr->minimum_bandwidth_mbs =
@@ -2198,12 +2203,12 @@ static int kfd_fill_gpu_xgmi_link_to_gpu(int *avail_size,
if (use_ta_info) {
sub_type_hdr->weight_xgmi = KFD_CRAT_XGMI_WEIGHT *
- amdgpu_amdkfd_get_xgmi_hops_count(kdev->adev, peer_kdev->adev);
- sub_type_hdr->maximum_bandwidth_mbs =
- amdgpu_amdkfd_get_xgmi_bandwidth_mbytes(kdev->adev,
- peer_kdev->adev, false);
- sub_type_hdr->minimum_bandwidth_mbs = sub_type_hdr->maximum_bandwidth_mbs ?
- amdgpu_amdkfd_get_xgmi_bandwidth_mbytes(kdev->adev, NULL, true) : 0;
+ amdgpu_xgmi_get_hops_count(kdev->adev, peer_kdev->adev);
+ amdgpu_xgmi_get_bandwidth(kdev->adev, peer_kdev->adev,
+ AMDGPU_XGMI_BW_MODE_PER_PEER,
+ AMDGPU_XGMI_BW_UNIT_MBYTES,
+ &sub_type_hdr->minimum_bandwidth_mbs,
+ &sub_type_hdr->maximum_bandwidth_mbs);
} else {
bool is_single_hop = kdev->kfd == peer_kdev->kfd;
int weight = is_single_hop ? KFD_CRAT_INTRA_SOCKET_WEIGHT :
--
2.34.1
