archives/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-03-08 03:44:45 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions

accel/amdxdna: Enable temporal sharing only mode

Browse source 
Newer firmware versions prefer temporal sharing only mode. In this mode,
the driver no longer needs to manage AIE array column allocation. Instead,
a new field, num_unused_col, is added to the hardware context creation
request to specify how many columns will not be used by this hardware
context.

Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Signed-off-by: Lizhi Hou <lizhi.hou@amd.com>
Link: https://patch.msgid.link/20251217191150.2145937-1-lizhi.hou@amd.com
This commit is contained in:
Lizhi Hou 2025-12-17 11:11:50 -08:00
parent 3ef9384103
commit 7818618a09
6 changed files with 21 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

18
drivers/accel/amdxdna/aie2_ctx.c
View file

@ -468,6 +468,12 @@ static int aie2_alloc_resource(struct amdxdna_hwctx *hwctx)
struct alloc_requests *xrs_req;
int ret;
if (AIE2_FEATURE_ON(xdna->dev_handle, AIE2_TEMPORAL_ONLY)) {
hwctx->num_unused_col = xdna->dev_handle->total_col - hwctx->num_col;
hwctx->num_col = xdna->dev_handle->total_col;
return aie2_create_context(xdna->dev_handle, hwctx);
}
xrs_req = kzalloc(sizeof(*xrs_req), GFP_KERNEL);
if (!xrs_req)
return -ENOMEM;
@ -499,9 +505,15 @@ static void aie2_release_resource(struct amdxdna_hwctx *hwctx)
struct amdxdna_dev *xdna = hwctx->client->xdna;
int ret;
ret = xrs_release_resource(xdna->xrs_hdl, (uintptr_t)hwctx);
if (ret)
XDNA_ERR(xdna, "Release AIE resource failed, ret %d", ret);
if (AIE2_FEATURE_ON(xdna->dev_handle, AIE2_TEMPORAL_ONLY)) {
ret = aie2_destroy_context(xdna->dev_handle, hwctx);
if (ret)
XDNA_ERR(xdna, "Destroy temporal only context failed, ret %d", ret);
} else {
ret = xrs_release_resource(xdna->xrs_hdl, (uintptr_t)hwctx);
if (ret)
XDNA_ERR(xdna, "Release AIE resource failed, ret %d", ret);
}
}
static int aie2_ctx_syncobj_create(struct amdxdna_hwctx *hwctx)

1
drivers/accel/amdxdna/aie2_message.c
View file

@ -218,6 +218,7 @@ int aie2_create_context(struct amdxdna_dev_hdl *ndev, struct amdxdna_hwctx *hwct
req.aie_type = 1;
req.start_col = hwctx->start_col;
req.num_col = hwctx->num_col;
req.num_unused_col = hwctx->num_unused_col;
req.num_cq_pairs_requested = 1;
req.pasid = hwctx->client->pasid;
req.context_priority = 2;

3
drivers/accel/amdxdna/aie2_msg_priv.h
View file

@ -112,7 +112,8 @@ struct create_ctx_req {
__u32 aie_type;
__u8 start_col;
__u8 num_col;
__u16 reserved;
__u8 num_unused_col;
__u8 reserved;
__u8 num_cq_pairs_requested;
__u8 reserved1;
__u16 pasid;

1
drivers/accel/amdxdna/aie2_pci.h
View file

@ -232,6 +232,7 @@ struct aie2_hw_ops {
enum aie2_fw_feature {
AIE2_NPU_COMMAND,
AIE2_PREEMPT,
AIE2_TEMPORAL_ONLY,
AIE2_FEATURE_MAX
};

1
drivers/accel/amdxdna/amdxdna_ctx.h
View file

@ -98,6 +98,7 @@ struct amdxdna_hwctx {
u32 *col_list;
u32 start_col;
u32 num_col;
u32 num_unused_col;
#define HWCTX_STAT_INIT 0
#define HWCTX_STAT_READY 1
#define HWCTX_STAT_STOP 2

1
drivers/accel/amdxdna/npu4_regs.c
View file

@ -90,6 +90,7 @@ const struct dpm_clk_freq npu4_dpm_clk_table[] = {
const struct aie2_fw_feature_tbl npu4_fw_feature_table[] = {
{ .feature = AIE2_NPU_COMMAND, .min_minor = 15 },
{ .feature = AIE2_PREEMPT, .min_minor = 12 },
{ .feature = AIE2_TEMPORAL_ONLY, .min_minor = 12 },
{ 0 }
};