The hardware can be shared among multiple user applications. The
hardware resources are allocated/freed based on the request from
user application via driver IOCTLs.
DRM_IOCTL_AMDXDNA_CREATE_HWCTX
Allocate tile columns and create a hardware context structure to track the
usage and status of the resources. A hardware context ID is returned for
XDNA command execution.
DRM_IOCTL_AMDXDNA_DESTROY_HWCTX
Release hardware context based on its ID. The tile columns belong to
this hardware context will be reclaimed.
DRM_IOCTL_AMDXDNA_CONFIG_HWCTX
Config hardware context. Bind the hardware context to the required
resources.
Co-developed-by: Min Ma <min.ma@amd.com>
Signed-off-by: Min Ma <min.ma@amd.com>
Signed-off-by: Lizhi Hou <lizhi.hou@amd.com>
---
drivers/accel/amdxdna/Makefile | 2 +
drivers/accel/amdxdna/aie2_ctx.c | 186 ++++++++++++++++++++
drivers/accel/amdxdna/aie2_message.c | 90 ++++++++++
drivers/accel/amdxdna/aie2_pci.c | 43 +++++
drivers/accel/amdxdna/aie2_pci.h | 13 ++
drivers/accel/amdxdna/amdxdna_ctx.c | 218 ++++++++++++++++++++++++
drivers/accel/amdxdna/amdxdna_ctx.h | 38 +++++
drivers/accel/amdxdna/amdxdna_pci_drv.c | 124 +++++++++++++-
drivers/accel/amdxdna/amdxdna_pci_drv.h | 20 +++
include/uapi/drm/amdxdna_accel.h | 131 ++++++++++++++
10 files changed, 864 insertions(+), 1 deletion(-)
create mode 100644 drivers/accel/amdxdna/aie2_ctx.c
create mode 100644 drivers/accel/amdxdna/amdxdna_ctx.c
create mode 100644 drivers/accel/amdxdna/amdxdna_ctx.h
diff --git a/drivers/accel/amdxdna/Makefile b/drivers/accel/amdxdna/Makefile
index 39d3404fbc8f..c86c90dfd303 100644
--- a/drivers/accel/amdxdna/Makefile
+++ b/drivers/accel/amdxdna/Makefile
@@ -1,11 +1,13 @@
# SPDX-License-Identifier: GPL-2.0-only
amdxdna-y := \
+ aie2_ctx.o \
aie2_message.o \
aie2_pci.o \
aie2_psp.o \
aie2_smu.o \
aie2_solver.o \
+ amdxdna_ctx.o \
amdxdna_mailbox.o \
amdxdna_mailbox_helper.o \
amdxdna_pci_drv.o \
diff --git a/drivers/accel/amdxdna/aie2_ctx.c b/drivers/accel/amdxdna/aie2_ctx.c
new file mode 100644
index 000000000000..022b2b0b015d
--- /dev/null
+++ b/drivers/accel/amdxdna/aie2_ctx.c
@@ -0,0 +1,186 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2024, Advanced Micro Devices, Inc.
+ */
+
+#include <drm/amdxdna_accel.h>
+#include <drm/drm_device.h>
+#include <drm/drm_print.h>
+#include <linux/types.h>
+
+#include "aie2_pci.h"
+#include "aie2_solver.h"
+#include "amdxdna_ctx.h"
+#include "amdxdna_mailbox.h"
+#include "amdxdna_pci_drv.h"
+
+static int aie2_hwctx_col_list(struct amdxdna_hwctx *hwctx)
+{
+ struct amdxdna_dev *xdna = hwctx->client->xdna;
+ struct amdxdna_dev_hdl *ndev;
+ int start, end, first, last;
+ u32 width = 1, entries = 0;
+ int i;
+
+ if (!hwctx->num_tiles) {
+ XDNA_ERR(xdna, "Number of tiles is zero");
+ return -EINVAL;
+ }
+
+ ndev = xdna->dev_handle;
+ if (unlikely(!ndev->metadata.core.row_count)) {
+ XDNA_WARN(xdna, "Core tile row count is zero");
+ return -EINVAL;
+ }
+
+ hwctx->num_col = hwctx->num_tiles / ndev->metadata.core.row_count;
+ if (!hwctx->num_col || hwctx->num_col > ndev->total_col) {
+ XDNA_ERR(xdna, "Invalid num_col %d", hwctx->num_col);
+ return -EINVAL;
+ }
+
+ if (ndev->priv->col_align == COL_ALIGN_NATURE)
+ width = hwctx->num_col;
+
+ /*
+ * In range [start, end], find out columns that is multiple of width.
+ * 'first' is the first column,
+ * 'last' is the last column,
+ * 'entries' is the total number of columns.
+ */
+ start = xdna->dev_info->first_col;
+ end = ndev->total_col - hwctx->num_col;
+ if (start > 0 && end == 0) {
+ XDNA_DBG(xdna, "Force start from col 0");
+ start = 0;
+ }
+ first = start + (width - start % width) % width;
+ last = end - end % width;
+ if (last >= first)
+ entries = (last - first) / width + 1;
+ XDNA_DBG(xdna, "start %d end %d first %d last %d",
+ start, end, first, last);
+
+ if (unlikely(!entries)) {
+ XDNA_ERR(xdna, "Start %d end %d width %d",
+ start, end, width);
+ return -EINVAL;
+ }
+
+ hwctx->col_list = kmalloc_array(entries, sizeof(*hwctx->col_list), GFP_KERNEL);
+ if (!hwctx->col_list)
+ return -ENOMEM;
+
+ hwctx->col_list_len = entries;
+ hwctx->col_list[0] = first;
+ for (i = 1; i < entries; i++)
+ hwctx->col_list[i] = hwctx->col_list[i - 1] + width;
+
+ print_hex_dump_debug("col_list: ", DUMP_PREFIX_OFFSET, 16, 4, hwctx->col_list,
+ entries * sizeof(*hwctx->col_list), false);
+ return 0;
+}
+
+static int aie2_alloc_resource(struct amdxdna_hwctx *hwctx)
+{
+ struct amdxdna_dev *xdna = hwctx->client->xdna;
+ struct alloc_requests *xrs_req;
+ int ret;
+
+ xrs_req = kzalloc(sizeof(*xrs_req), GFP_KERNEL);
+ if (!xrs_req)
+ return -ENOMEM;
+
+ xrs_req->cdo.start_cols = hwctx->col_list;
+ xrs_req->cdo.cols_len = hwctx->col_list_len;
+ xrs_req->cdo.ncols = hwctx->num_col;
+ xrs_req->cdo.qos_cap.opc = hwctx->max_opc;
+
+ xrs_req->rqos.gops = hwctx->qos.gops;
+ xrs_req->rqos.fps = hwctx->qos.fps;
+ xrs_req->rqos.dma_bw = hwctx->qos.dma_bandwidth;
+ xrs_req->rqos.latency = hwctx->qos.latency;
+ xrs_req->rqos.exec_time = hwctx->qos.frame_exec_time;
+ xrs_req->rqos.priority = hwctx->qos.priority;
+
+ xrs_req->rid = (uintptr_t)hwctx;
+
+ ret = xrs_allocate_resource(xdna->xrs_hdl, xrs_req, hwctx);
+ if (ret)
+ XDNA_ERR(xdna, "Allocate AIE resource failed, ret %d", ret);
+
+ kfree(xrs_req);
+ return ret;
+}
+
+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);
+}
+
+int aie2_hwctx_init(struct amdxdna_hwctx *hwctx)
+{
+ struct amdxdna_client *client = hwctx->client;
+ struct amdxdna_dev *xdna = client->xdna;
+ struct amdxdna_hwctx_priv *priv;
+ int ret;
+
+ priv = kzalloc(sizeof(*hwctx->priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+ hwctx->priv = priv;
+
+ ret = aie2_hwctx_col_list(hwctx);
+ if (ret) {
+ XDNA_ERR(xdna, "Create col list failed, ret %d", ret);
+ goto free_priv;
+ }
+
+ ret = aie2_alloc_resource(hwctx);
+ if (ret) {
+ XDNA_ERR(xdna, "Alloc hw resource failed, ret %d", ret);
+ goto free_col_list;
+ }
+
+ hwctx->status = HWCTX_STAT_INIT;
+
+ XDNA_DBG(xdna, "hwctx %s init completed", hwctx->name);
+
+ return 0;
+
+free_col_list:
+ kfree(hwctx->col_list);
+free_priv:
+ kfree(priv);
+ return ret;
+}
+
+void aie2_hwctx_fini(struct amdxdna_hwctx *hwctx)
+{
+ aie2_release_resource(hwctx);
+
+ kfree(hwctx->col_list);
+ kfree(hwctx->priv);
+ kfree(hwctx->cus);
+}
+
+int aie2_hwctx_config(struct amdxdna_hwctx *hwctx, u32 type, u64 value, void *buf, u32 size)
+{
+ struct amdxdna_dev *xdna = hwctx->client->xdna;
+
+ drm_WARN_ON(&xdna->ddev, !mutex_is_locked(&xdna->dev_lock));
+ switch (type) {
+ case DRM_AMDXDNA_HWCTX_CONFIG_CU:
+ case DRM_AMDXDNA_HWCTX_ASSIGN_DBG_BUF:
+ case DRM_AMDXDNA_HWCTX_REMOVE_DBG_BUF:
+ return -EOPNOTSUPP;
+ default:
+ XDNA_DBG(xdna, "Not supported type %d", type);
+ return -EOPNOTSUPP;
+ }
+}
diff --git a/drivers/accel/amdxdna/aie2_message.c b/drivers/accel/amdxdna/aie2_message.c
index cbf8ee54c6c2..4b8a71bf4fae 100644
--- a/drivers/accel/amdxdna/aie2_message.c
+++ b/drivers/accel/amdxdna/aie2_message.c
@@ -3,13 +3,16 @@
* Copyright (C) 2023-2024, Advanced Micro Devices, Inc.
*/
+#include <drm/amdxdna_accel.h>
#include <drm/drm_device.h>
#include <drm/drm_print.h>
#include <linux/errno.h>
+#include <linux/pci.h>
#include <linux/types.h>
#include "aie2_msg_priv.h"
#include "aie2_pci.h"
+#include "amdxdna_ctx.h"
#include "amdxdna_mailbox.h"
#include "amdxdna_mailbox_helper.h"
#include "amdxdna_pci_drv.h"
@@ -192,3 +195,90 @@ int aie2_query_firmware_version(struct amdxdna_dev_hdl *ndev,
return 0;
}
+
+int aie2_create_context(struct amdxdna_dev_hdl *ndev, struct amdxdna_hwctx *hwctx)
+{
+ DECLARE_AIE2_MSG(create_ctx, MSG_OP_CREATE_CONTEXT);
+ struct amdxdna_dev *xdna = ndev->xdna;
+ struct xdna_mailbox_chann_res x2i;
+ struct xdna_mailbox_chann_res i2x;
+ struct cq_pair *cq_pair;
+ u32 intr_reg;
+ int ret;
+
+ req.aie_type = 1;
+ req.start_col = hwctx->start_col;
+ req.num_col = hwctx->num_col;
+ req.num_cq_pairs_requested = 1;
+ req.pasid = hwctx->client->pasid;
+ req.context_priority = 2;
+
+ ret = aie2_send_mgmt_msg_wait(ndev, &msg);
+ if (ret)
+ return ret;
+
+ hwctx->fw_ctx_id = resp.context_id;
+ WARN_ONCE(hwctx->fw_ctx_id == -1, "Unexpected context id");
+
+ cq_pair = &resp.cq_pair[0];
+ x2i.mb_head_ptr_reg = AIE2_MBOX_OFF(ndev, cq_pair->x2i_q.head_addr);
+ x2i.mb_tail_ptr_reg = AIE2_MBOX_OFF(ndev, cq_pair->x2i_q.tail_addr);
+ x2i.rb_start_addr = AIE2_SRAM_OFF(ndev, cq_pair->x2i_q.buf_addr);
+ x2i.rb_size = cq_pair->x2i_q.buf_size;
+
+ i2x.mb_head_ptr_reg = AIE2_MBOX_OFF(ndev, cq_pair->i2x_q.head_addr);
+ i2x.mb_tail_ptr_reg = AIE2_MBOX_OFF(ndev, cq_pair->i2x_q.tail_addr);
+ i2x.rb_start_addr = AIE2_SRAM_OFF(ndev, cq_pair->i2x_q.buf_addr);
+ i2x.rb_size = cq_pair->i2x_q.buf_size;
+
+ ret = pci_irq_vector(to_pci_dev(xdna->ddev.dev), resp.msix_id);
+ if (ret == -EINVAL) {
+ XDNA_ERR(xdna, "not able to create channel");
+ goto out_destroy_context;
+ }
+
+ intr_reg = i2x.mb_head_ptr_reg + 4;
+ hwctx->priv->mbox_chann = xdna_mailbox_create_channel(ndev->mbox, &x2i, &i2x,
+ intr_reg, ret);
+ if (!hwctx->priv->mbox_chann) {
+ XDNA_ERR(xdna, "not able to create channel");
+ ret = -EINVAL;
+ goto out_destroy_context;
+ }
+
+ XDNA_DBG(xdna, "%s mailbox channel irq: %d, msix_id: %d",
+ hwctx->name, ret, resp.msix_id);
+ XDNA_DBG(xdna, "%s created fw ctx %d pasid %d", hwctx->name,
+ hwctx->fw_ctx_id, hwctx->client->pasid);
+
+ return 0;
+
+out_destroy_context:
+ aie2_destroy_context(ndev, hwctx);
+ return ret;
+}
+
+int aie2_destroy_context(struct amdxdna_dev_hdl *ndev, struct amdxdna_hwctx *hwctx)
+{
+ DECLARE_AIE2_MSG(destroy_ctx, MSG_OP_DESTROY_CONTEXT);
+ struct amdxdna_dev *xdna = ndev->xdna;
+ int ret;
+
+ if (hwctx->fw_ctx_id == -1)
+ return 0;
+
+ xdna_mailbox_stop_channel(hwctx->priv->mbox_chann);
+
+ req.context_id = hwctx->fw_ctx_id;
+ ret = aie2_send_mgmt_msg_wait(ndev, &msg);
+ if (ret)
+ XDNA_WARN(xdna, "%s destroy context failed, ret %d", hwctx->name, ret);
+
+ xdna_mailbox_destroy_channel(hwctx->priv->mbox_chann);
+ XDNA_DBG(xdna, "%s destroyed fw ctx %d", hwctx->name,
+ hwctx->fw_ctx_id);
+ hwctx->priv->mbox_chann = NULL;
+ hwctx->fw_ctx_id = -1;
+
+ return ret;
+}
diff --git a/drivers/accel/amdxdna/aie2_pci.c b/drivers/accel/amdxdna/aie2_pci.c
index aa66f401235a..ee9f114bc229 100644
--- a/drivers/accel/amdxdna/aie2_pci.c
+++ b/drivers/accel/amdxdna/aie2_pci.c
@@ -3,6 +3,7 @@
* Copyright (C) 2023-2024, Advanced Micro Devices, Inc.
*/
+#include <drm/amdxdna_accel.h>
#include <drm/drm_device.h>
#include <drm/drm_managed.h>
#include <drm/drm_print.h>
@@ -15,6 +16,7 @@
#include "aie2_msg_priv.h"
#include "aie2_pci.h"
#include "aie2_solver.h"
+#include "amdxdna_ctx.h"
#include "amdxdna_mailbox.h"
#include "amdxdna_pci_drv.h"
@@ -210,6 +212,43 @@ static void aie2_mgmt_fw_fini(struct amdxdna_dev_hdl *ndev)
XDNA_DBG(ndev->xdna, "Firmware suspended");
}
+static int aie2_xrs_load(void *cb_arg, struct xrs_action_load *action)
+{
+ struct amdxdna_hwctx *hwctx = cb_arg;
+ struct amdxdna_dev *xdna;
+ int ret;
+
+ xdna = hwctx->client->xdna;
+
+ hwctx->start_col = action->part.start_col;
+ hwctx->num_col = action->part.ncols;
+ ret = aie2_create_context(xdna->dev_handle, hwctx);
+ if (ret)
+ XDNA_ERR(xdna, "create context failed, ret %d", ret);
+
+ return ret;
+}
+
+static int aie2_xrs_unload(void *cb_arg)
+{
+ struct amdxdna_hwctx *hwctx = cb_arg;
+ struct amdxdna_dev *xdna;
+ int ret;
+
+ xdna = hwctx->client->xdna;
+
+ ret = aie2_destroy_context(xdna->dev_handle, hwctx);
+ if (ret)
+ XDNA_ERR(xdna, "destroy context failed, ret %d", ret);
+
+ return ret;
+}
+
+static struct xrs_action_ops aie2_xrs_actions = {
+ .load = aie2_xrs_load,
+ .unload = aie2_xrs_unload,
+};
+
static void aie2_hw_stop(struct amdxdna_dev *xdna)
{
struct pci_dev *pdev = to_pci_dev(xdna->ddev.dev);
@@ -420,6 +459,7 @@ static int aie2_init(struct amdxdna_dev *xdna)
xrs_cfg.clk_list.cu_clk_list[2] = 1000;
xrs_cfg.sys_eff_factor = 1;
xrs_cfg.ddev = &xdna->ddev;
+ xrs_cfg.actions = &aie2_xrs_actions;
xrs_cfg.total_col = ndev->total_col;
xdna->xrs_hdl = xrsm_init(&xrs_cfg);
@@ -456,4 +496,7 @@ static void aie2_fini(struct amdxdna_dev *xdna)
const struct amdxdna_dev_ops aie2_ops = {
.init = aie2_init,
.fini = aie2_fini,
+ .hwctx_init = aie2_hwctx_init,
+ .hwctx_fini = aie2_hwctx_fini,
+ .hwctx_config = aie2_hwctx_config,
};
diff --git a/drivers/accel/amdxdna/aie2_pci.h b/drivers/accel/amdxdna/aie2_pci.h
index 4c81d10a0998..b789286bc9d4 100644
--- a/drivers/accel/amdxdna/aie2_pci.h
+++ b/drivers/accel/amdxdna/aie2_pci.h
@@ -77,6 +77,7 @@ enum psp_reg_idx {
};
struct amdxdna_fw_ver;
+struct amdxdna_hwctx;
struct psp_config {
const void *fw_buf;
@@ -117,6 +118,10 @@ struct rt_config {
u32 value;
};
+struct amdxdna_hwctx_priv {
+ void *mbox_chann;
+};
+
struct amdxdna_dev_hdl {
struct amdxdna_dev *xdna;
const struct amdxdna_dev_priv *priv;
@@ -189,4 +194,12 @@ int aie2_query_aie_version(struct amdxdna_dev_hdl *ndev, struct aie_version *ver
int aie2_query_aie_metadata(struct amdxdna_dev_hdl *ndev, struct aie_metadata *metadata);
int aie2_query_firmware_version(struct amdxdna_dev_hdl *ndev,
struct amdxdna_fw_ver *fw_ver);
+int aie2_create_context(struct amdxdna_dev_hdl *ndev, struct amdxdna_hwctx *hwctx);
+int aie2_destroy_context(struct amdxdna_dev_hdl *ndev, struct amdxdna_hwctx *hwctx);
+
+/* aie2_hwctx.c */
+int aie2_hwctx_init(struct amdxdna_hwctx *hwctx);
+void aie2_hwctx_fini(struct amdxdna_hwctx *hwctx);
+int aie2_hwctx_config(struct amdxdna_hwctx *hwctx, u32 type, u64 value, void *buf, u32 size);
+
#endif /* _AIE2_PCI_H_ */
diff --git a/drivers/accel/amdxdna/amdxdna_ctx.c b/drivers/accel/amdxdna/amdxdna_ctx.c
new file mode 100644
index 000000000000..8acf8bfe0db9
--- /dev/null
+++ b/drivers/accel/amdxdna/amdxdna_ctx.c
@@ -0,0 +1,218 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2022-2024, Advanced Micro Devices, Inc.
+ */
+
+#include <drm/amdxdna_accel.h>
+#include <drm/drm_device.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_file.h>
+#include <drm/drm_print.h>
+
+#include "amdxdna_ctx.h"
+#include "amdxdna_pci_drv.h"
+
+#define MAX_HWCTX_ID 255
+
+static void amdxdna_hwctx_destroy(struct amdxdna_hwctx *hwctx)
+{
+ struct amdxdna_dev *xdna = hwctx->client->xdna;
+
+ /* At this point, user is not able to submit new commands */
+ mutex_lock(&xdna->dev_lock);
+ xdna->dev_info->ops->hwctx_fini(hwctx);
+ mutex_unlock(&xdna->dev_lock);
+
+ kfree(hwctx->name);
+ kfree(hwctx);
+}
+
+/*
+ * This should be called in close() and remove(). DO NOT call in other syscalls.
+ * This guarantee that when hwctx and resources will be released, if user
+ * doesn't call amdxdna_drm_destroy_hwctx_ioctl.
+ */
+void amdxdna_hwctx_remove_all(struct amdxdna_client *client)
+{
+ struct amdxdna_hwctx *hwctx;
+ int next = 0;
+
+ mutex_lock(&client->hwctx_lock);
+ idr_for_each_entry_continue(&client->hwctx_idr, hwctx, next) {
+ XDNA_DBG(client->xdna, "PID %d close HW context %d",
+ client->pid, hwctx->id);
+ idr_remove(&client->hwctx_idr, hwctx->id);
+ mutex_unlock(&client->hwctx_lock);
+ amdxdna_hwctx_destroy(hwctx);
+ mutex_lock(&client->hwctx_lock);
+ }
+ mutex_unlock(&client->hwctx_lock);
+}
+
+int amdxdna_drm_create_hwctx_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
+{
+ struct amdxdna_client *client = filp->driver_priv;
+ struct amdxdna_drm_create_hwctx *args = data;
+ struct amdxdna_dev *xdna = to_xdna_dev(dev);
+ struct amdxdna_hwctx *hwctx;
+ int ret, idx;
+
+ if (args->ext || args->ext_flags)
+ return -EINVAL;
+
+ if (!drm_dev_enter(dev, &idx))
+ return -ENODEV;
+
+ hwctx = kzalloc(sizeof(*hwctx), GFP_KERNEL);
+ if (!hwctx) {
+ ret = -ENOMEM;
+ goto exit;
+ }
+
+ if (copy_from_user(&hwctx->qos, u64_to_user_ptr(args->qos_p), sizeof(hwctx->qos))) {
+ XDNA_ERR(xdna, "Access QoS info failed");
+ ret = -EFAULT;
+ goto free_hwctx;
+ }
+
+ hwctx->client = client;
+ hwctx->fw_ctx_id = -1;
+ hwctx->num_tiles = args->num_tiles;
+ hwctx->mem_size = args->mem_size;
+ hwctx->max_opc = args->max_opc;
+ mutex_lock(&client->hwctx_lock);
+ ret = idr_alloc_cyclic(&client->hwctx_idr, hwctx, 0, MAX_HWCTX_ID, GFP_KERNEL);
+ if (ret < 0) {
+ mutex_unlock(&client->hwctx_lock);
+ XDNA_ERR(xdna, "Allocate hwctx ID failed, ret %d", ret);
+ goto free_hwctx;
+ }
+ hwctx->id = ret;
+ mutex_unlock(&client->hwctx_lock);
+
+ hwctx->name = kasprintf(GFP_KERNEL, "hwctx.%d.%d", client->pid, hwctx->id);
+ if (!hwctx->name) {
+ ret = -ENOMEM;
+ goto rm_id;
+ }
+
+ mutex_lock(&xdna->dev_lock);
+ ret = xdna->dev_info->ops->hwctx_init(hwctx);
+ if (ret) {
+ mutex_unlock(&xdna->dev_lock);
+ XDNA_ERR(xdna, "Init hwctx failed, ret %d", ret);
+ goto free_name;
+ }
+ args->handle = hwctx->id;
+ mutex_unlock(&xdna->dev_lock);
+
+ XDNA_DBG(xdna, "PID %d create HW context %d, ret %d", client->pid, args->handle, ret);
+ drm_dev_exit(idx);
+ return 0;
+
+free_name:
+ kfree(hwctx->name);
+rm_id:
+ mutex_lock(&client->hwctx_lock);
+ idr_remove(&client->hwctx_idr, hwctx->id);
+ mutex_unlock(&client->hwctx_lock);
+free_hwctx:
+ kfree(hwctx);
+exit:
+ drm_dev_exit(idx);
+ return ret;
+}
+
+int amdxdna_drm_destroy_hwctx_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
+{
+ struct amdxdna_client *client = filp->driver_priv;
+ struct amdxdna_drm_destroy_hwctx *args = data;
+ struct amdxdna_dev *xdna = to_xdna_dev(dev);
+ struct amdxdna_hwctx *hwctx;
+ int ret = 0, idx;
+
+ if (!drm_dev_enter(dev, &idx))
+ return -ENODEV;
+
+ mutex_lock(&client->hwctx_lock);
+ hwctx = idr_find(&client->hwctx_idr, args->handle);
+ if (!hwctx) {
+ mutex_unlock(&client->hwctx_lock);
+ ret = -EINVAL;
+ XDNA_DBG(xdna, "PID %d HW context %d not exist",
+ client->pid, args->handle);
+ goto out;
+ }
+ idr_remove(&client->hwctx_idr, hwctx->id);
+ mutex_unlock(&client->hwctx_lock);
+
+ amdxdna_hwctx_destroy(hwctx);
+
+ XDNA_DBG(xdna, "PID %d destroyed HW context %d", client->pid, args->handle);
+out:
+ drm_dev_exit(idx);
+ return ret;
+}
+
+int amdxdna_drm_config_hwctx_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
+{
+ struct amdxdna_client *client = filp->driver_priv;
+ struct amdxdna_drm_config_hwctx *args = data;
+ struct amdxdna_dev *xdna = to_xdna_dev(dev);
+ struct amdxdna_hwctx *hwctx;
+ u32 buf_size;
+ void *buf;
+ u64 val;
+ int ret;
+
+ if (!xdna->dev_info->ops->hwctx_config)
+ return -EOPNOTSUPP;
+
+ val = args->param_val;
+ buf_size = args->param_val_size;
+
+ switch (args->param_type) {
+ case DRM_AMDXDNA_HWCTX_CONFIG_CU:
+ /* For those types that param_val is pointer */
+ if (buf_size > PAGE_SIZE) {
+ XDNA_ERR(xdna, "Config CU param buffer too large");
+ return -E2BIG;
+ }
+
+ /* Hwctx needs to keep buf */
+ buf = kzalloc(PAGE_SIZE, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ if (copy_from_user(buf, u64_to_user_ptr(val), buf_size)) {
+ kfree(buf);
+ return -EFAULT;
+ }
+
+ break;
+ case DRM_AMDXDNA_HWCTX_ASSIGN_DBG_BUF:
+ case DRM_AMDXDNA_HWCTX_REMOVE_DBG_BUF:
+ /* For those types that param_val is a value */
+ buf = NULL;
+ buf_size = 0;
+ break;
+ default:
+ XDNA_DBG(xdna, "Unknown HW context config type %d", args->param_type);
+ return -EINVAL;
+ }
+
+ mutex_lock(&xdna->dev_lock);
+ hwctx = idr_find(&client->hwctx_idr, args->handle);
+ if (!hwctx) {
+ XDNA_DBG(xdna, "PID %d failed to get hwctx %d", client->pid, args->handle);
+ ret = -EINVAL;
+ goto unlock;
+ }
+
+ ret = xdna->dev_info->ops->hwctx_config(hwctx, args->param_type, val, buf, buf_size);
+
+unlock:
+ mutex_unlock(&xdna->dev_lock);
+ kfree(buf);
+ return ret;
+}
diff --git a/drivers/accel/amdxdna/amdxdna_ctx.h b/drivers/accel/amdxdna/amdxdna_ctx.h
new file mode 100644
index 000000000000..3627770e5a98
--- /dev/null
+++ b/drivers/accel/amdxdna/amdxdna_ctx.h
@@ -0,0 +1,38 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2022-2024, Advanced Micro Devices, Inc.
+ */
+
+#ifndef _AMDXDNA_CTX_H_
+#define _AMDXDNA_CTX_H_
+
+struct amdxdna_hwctx {
+ struct amdxdna_client *client;
+ struct amdxdna_hwctx_priv *priv;
+ char *name;
+
+ u32 id;
+ u32 max_opc;
+ u32 num_tiles;
+ u32 mem_size;
+ u32 fw_ctx_id;
+ u32 col_list_len;
+ u32 *col_list;
+ u32 start_col;
+ u32 num_col;
+#define HWCTX_STAT_INIT 0
+#define HWCTX_STAT_READY 1
+#define HWCTX_STAT_STOP 2
+ u32 status;
+ u32 old_status;
+
+ struct amdxdna_qos_info qos;
+ struct amdxdna_hwctx_param_config_cu *cus;
+};
+
+void amdxdna_hwctx_remove_all(struct amdxdna_client *client);
+int amdxdna_drm_create_hwctx_ioctl(struct drm_device *dev, void *data, struct drm_file *filp);
+int amdxdna_drm_config_hwctx_ioctl(struct drm_device *dev, void *data, struct drm_file *filp);
+int amdxdna_drm_destroy_hwctx_ioctl(struct drm_device *dev, void *data, struct drm_file *filp);
+
+#endif /* _AMDXDNA_CTX_H_ */
diff --git a/drivers/accel/amdxdna/amdxdna_pci_drv.c b/drivers/accel/amdxdna/amdxdna_pci_drv.c
index 7a5945854e26..49e896092209 100644
--- a/drivers/accel/amdxdna/amdxdna_pci_drv.c
+++ b/drivers/accel/amdxdna/amdxdna_pci_drv.c
@@ -3,13 +3,16 @@
* Copyright (C) 2022-2024, Advanced Micro Devices, Inc.
*/
+#include <drm/amdxdna_accel.h>
#include <drm/drm_accel.h>
#include <drm/drm_drv.h>
#include <drm/drm_gem.h>
#include <drm/drm_ioctl.h>
#include <drm/drm_managed.h>
+#include <linux/iommu.h>
#include <linux/pci.h>
+#include "amdxdna_ctx.h"
#include "amdxdna_pci_drv.h"
/*
@@ -33,13 +36,117 @@ static const struct amdxdna_device_id amdxdna_ids[] = {
{0}
};
-DEFINE_DRM_ACCEL_FOPS(amdxdna_fops);
+static int amdxdna_drm_open(struct drm_device *ddev, struct drm_file *filp)
+{
+ struct amdxdna_dev *xdna = to_xdna_dev(ddev);
+ struct amdxdna_client *client;
+ int ret;
+
+ client = kzalloc(sizeof(*client), GFP_KERNEL);
+ if (!client)
+ return -ENOMEM;
+
+ client->pid = pid_nr(filp->pid);
+ client->xdna = xdna;
+
+ client->sva = iommu_sva_bind_device(xdna->ddev.dev, current->mm);
+ if (IS_ERR(client->sva)) {
+ ret = PTR_ERR(client->sva);
+ XDNA_ERR(xdna, "SVA bind device failed, ret %d", ret);
+ goto failed;
+ }
+ client->pasid = iommu_sva_get_pasid(client->sva);
+ if (client->pasid == IOMMU_PASID_INVALID) {
+ XDNA_ERR(xdna, "SVA get pasid failed");
+ ret = -ENODEV;
+ goto unbind_sva;
+ }
+ mutex_init(&client->hwctx_lock);
+ idr_init_base(&client->hwctx_idr, AMDXDNA_INVALID_CTX_HANDLE + 1);
+
+ mutex_lock(&xdna->dev_lock);
+ list_add_tail(&client->node, &xdna->client_list);
+ mutex_unlock(&xdna->dev_lock);
+
+ filp->driver_priv = client;
+ client->filp = filp;
+
+ XDNA_DBG(xdna, "pid %d opened", client->pid);
+ return 0;
+
+unbind_sva:
+ iommu_sva_unbind_device(client->sva);
+failed:
+ kfree(client);
+
+ return ret;
+}
+
+static void amdxdna_drm_close(struct drm_device *ddev, struct drm_file *filp)
+{
+ struct amdxdna_client *client = filp->driver_priv;
+ struct amdxdna_dev *xdna = to_xdna_dev(ddev);
+
+ XDNA_DBG(xdna, "closing pid %d", client->pid);
+
+ idr_destroy(&client->hwctx_idr);
+ mutex_destroy(&client->hwctx_lock);
+
+ iommu_sva_unbind_device(client->sva);
+
+ XDNA_DBG(xdna, "pid %d closed", client->pid);
+ kfree(client);
+}
+
+static int amdxdna_flush(struct file *f, fl_owner_t id)
+{
+ struct drm_file *filp = f->private_data;
+ struct amdxdna_client *client = filp->driver_priv;
+ struct amdxdna_dev *xdna = client->xdna;
+ int idx;
+
+ XDNA_DBG(xdna, "PID %d flushing...", client->pid);
+ if (!drm_dev_enter(&xdna->ddev, &idx))
+ return 0;
+
+ mutex_lock(&xdna->dev_lock);
+ list_del_init(&client->node);
+ mutex_unlock(&xdna->dev_lock);
+ amdxdna_hwctx_remove_all(client);
+
+ drm_dev_exit(idx);
+ return 0;
+}
+
+static const struct drm_ioctl_desc amdxdna_drm_ioctls[] = {
+ /* Context */
+ DRM_IOCTL_DEF_DRV(AMDXDNA_CREATE_HWCTX, amdxdna_drm_create_hwctx_ioctl, 0),
+ DRM_IOCTL_DEF_DRV(AMDXDNA_DESTROY_HWCTX, amdxdna_drm_destroy_hwctx_ioctl, 0),
+ DRM_IOCTL_DEF_DRV(AMDXDNA_CONFIG_HWCTX, amdxdna_drm_config_hwctx_ioctl, 0),
+};
+
+static const struct file_operations amdxdna_fops = {
+ .owner = THIS_MODULE,
+ .open = accel_open,
+ .release = drm_release,
+ .flush = amdxdna_flush,
+ .unlocked_ioctl = drm_ioctl,
+ .compat_ioctl = drm_compat_ioctl,
+ .poll = drm_poll,
+ .read = drm_read,
+ .llseek = noop_llseek,
+ .mmap = drm_gem_mmap,
+};
const struct drm_driver amdxdna_drm_drv = {
.driver_features = DRIVER_GEM | DRIVER_COMPUTE_ACCEL,
.fops = &amdxdna_fops,
.name = "amdxdna_accel_driver",
.desc = "AMD XDNA DRM implementation",
+ .open = amdxdna_drm_open,
+ .postclose = amdxdna_drm_close,
+ .ioctls = amdxdna_drm_ioctls,
+ .num_ioctls = ARRAY_SIZE(amdxdna_drm_ioctls),
};
static const struct amdxdna_dev_info *
@@ -69,6 +176,7 @@ static int amdxdna_probe(struct pci_dev *pdev, const struct pci_device_id *id)
return -ENODEV;
drmm_mutex_init(&xdna->ddev, &xdna->dev_lock);
+ INIT_LIST_HEAD(&xdna->client_list);
pci_set_drvdata(pdev, xdna);
mutex_lock(&xdna->dev_lock);
@@ -105,11 +213,25 @@ static int amdxdna_probe(struct pci_dev *pdev, const struct pci_device_id *id)
static void amdxdna_remove(struct pci_dev *pdev)
{
struct amdxdna_dev *xdna = pci_get_drvdata(pdev);
+ struct amdxdna_client *client;
drm_dev_unplug(&xdna->ddev);
amdxdna_sysfs_fini(xdna);
mutex_lock(&xdna->dev_lock);
+ client = list_first_entry_or_null(&xdna->client_list,
+ struct amdxdna_client, node);
+ while (client) {
+ list_del_init(&client->node);
+ mutex_unlock(&xdna->dev_lock);
+
+ amdxdna_hwctx_remove_all(client);
+
+ mutex_lock(&xdna->dev_lock);
+ client = list_first_entry_or_null(&xdna->client_list,
+ struct amdxdna_client, node);
+ }
+
xdna->dev_info->ops->fini(xdna);
mutex_unlock(&xdna->dev_lock);
}
diff --git a/drivers/accel/amdxdna/amdxdna_pci_drv.h b/drivers/accel/amdxdna/amdxdna_pci_drv.h
index c0710d3130fd..5ec7fe168406 100644
--- a/drivers/accel/amdxdna/amdxdna_pci_drv.h
+++ b/drivers/accel/amdxdna/amdxdna_pci_drv.h
@@ -18,6 +18,7 @@
extern const struct drm_driver amdxdna_drm_drv;
struct amdxdna_dev;
+struct amdxdna_hwctx;
/*
* struct amdxdna_dev_ops - Device hardware operation callbacks
@@ -25,6 +26,9 @@ struct amdxdna_dev;
struct amdxdna_dev_ops {
int (*init)(struct amdxdna_dev *xdna);
void (*fini)(struct amdxdna_dev *xdna);
+ int (*hwctx_init)(struct amdxdna_hwctx *hwctx);
+ void (*hwctx_fini)(struct amdxdna_hwctx *hwctx);
+ int (*hwctx_config)(struct amdxdna_hwctx *hwctx, u32 type, u64 value, void *buf, u32 size);
};
/*
@@ -61,6 +65,7 @@ struct amdxdna_dev {
void *xrs_hdl;
struct mutex dev_lock; /* per device lock */
+ struct list_head client_list;
struct amdxdna_fw_ver fw_ver;
};
@@ -73,6 +78,21 @@ struct amdxdna_device_id {
const struct amdxdna_dev_info *dev_info;
};
+/*
+ * struct amdxdna_client - amdxdna client
+ * A per fd data structure for managing context and other user process stuffs.
+ */
+struct amdxdna_client {
+ struct list_head node;
+ pid_t pid;
+ struct mutex hwctx_lock; /* protect hwctx */
+ struct idr hwctx_idr;
+ struct amdxdna_dev *xdna;
+ struct drm_file *filp;
+ struct iommu_sva *sva;
+ int pasid;
+};
+
/* Add device info below */
extern const struct amdxdna_dev_info dev_npu1_info;
extern const struct amdxdna_dev_info dev_npu2_info;
diff --git a/include/uapi/drm/amdxdna_accel.h b/include/uapi/drm/amdxdna_accel.h
index 6d97e8e90cf6..133da8c007d0 100644
--- a/include/uapi/drm/amdxdna_accel.h
+++ b/include/uapi/drm/amdxdna_accel.h
@@ -6,17 +6,148 @@
#ifndef _UAPI_AMDXDNA_ACCEL_H_
#define _UAPI_AMDXDNA_ACCEL_H_
+#include <linux/stddef.h>
#include "drm.h"
#if defined(__cplusplus)
extern "C" {
#endif
+#define AMDXDNA_INVALID_CTX_HANDLE 0
+
enum amdxdna_device_type {
AMDXDNA_DEV_TYPE_UNKNOWN = -1,
AMDXDNA_DEV_TYPE_KMQ,
};
+enum amdxdna_drm_ioctl_id {
+ DRM_AMDXDNA_CREATE_HWCTX,
+ DRM_AMDXDNA_DESTROY_HWCTX,
+ DRM_AMDXDNA_CONFIG_HWCTX,
+};
+
+/**
+ * struct qos_info - QoS information for driver.
+ * @gops: Giga operations per second.
+ * @fps: Frames per second.
+ * @dma_bandwidth: DMA bandwidtha.
+ * @latency: Frame response latency.
+ * @frame_exec_time: Frame execution time.
+ * @priority: Request priority.
+ *
+ * User program can provide QoS hints to driver.
+ */
+struct amdxdna_qos_info {
+ __u32 gops;
+ __u32 fps;
+ __u32 dma_bandwidth;
+ __u32 latency;
+ __u32 frame_exec_time;
+ __u32 priority;
+};
+
+/**
+ * struct amdxdna_drm_create_hwctx - Create hardware context.
+ * @ext: MBZ.
+ * @ext_flags: MBZ.
+ * @qos_p: Address of QoS info.
+ * @umq_bo: BO handle for user mode queue(UMQ).
+ * @log_buf_bo: BO handle for log buffer.
+ * @max_opc: Maximum operations per cycle.
+ * @num_tiles: Number of AIE tiles.
+ * @mem_size: Size of AIE tile memory.
+ * @umq_doorbell: Returned offset of doorbell associated with UMQ.
+ * @handle: Returned hardware context handle.
+ * @pad: Structure padding.
+ */
+struct amdxdna_drm_create_hwctx {
+ __u64 ext;
+ __u64 ext_flags;
+ __u64 qos_p;
+ __u32 umq_bo;
+ __u32 log_buf_bo;
+ __u32 max_opc;
+ __u32 num_tiles;
+ __u32 mem_size;
+ __u32 umq_doorbell;
+ __u32 handle;
+ __u32 pad;
+};
+
+/**
+ * struct amdxdna_drm_destroy_hwctx - Destroy hardware context.
+ * @handle: Hardware context handle.
+ * @pad: Structure padding.
+ */
+struct amdxdna_drm_destroy_hwctx {
+ __u32 handle;
+ __u32 pad;
+};
+
+/**
+ * struct amdxdna_cu_config - configuration for one CU
+ * @cu_bo: CU configuration buffer bo handle.
+ * @cu_func: Function of a CU.
+ * @pad: Structure padding.
+ */
+struct amdxdna_cu_config {
+ __u32 cu_bo;
+ __u8 cu_func;
+ __u8 pad[3];
+};
+
+/**
+ * struct amdxdna_hwctx_param_config_cu - configuration for CUs in hardware context
+ * @num_cus: Number of CUs to configure.
+ * @pad: Structure padding.
+ * @cu_configs: Array of CU configurations of struct amdxdna_cu_config.
+ */
+struct amdxdna_hwctx_param_config_cu {
+ __u16 num_cus;
+ __u16 pad[3];
+ struct amdxdna_cu_config cu_configs[] __counted_by(num_cus);
+};
+
+enum amdxdna_drm_config_hwctx_param {
+ DRM_AMDXDNA_HWCTX_CONFIG_CU,
+ DRM_AMDXDNA_HWCTX_ASSIGN_DBG_BUF,
+ DRM_AMDXDNA_HWCTX_REMOVE_DBG_BUF,
+ DRM_AMDXDNA_HWCTX_CONFIG_NUM
+};
+
+/**
+ * struct amdxdna_drm_config_hwctx - Configure hardware context.
+ * @handle: hardware context handle.
+ * @param_type: Value in enum amdxdna_drm_config_hwctx_param. Specifies the
+ * structure passed in via param_val.
+ * @param_val: A structure specified by the param_type struct member.
+ * @param_val_size: Size of the parameter buffer pointed to by the param_val.
+ * If param_val is not a pointer, driver can ignore this.
+ * @pad: Structure padding.
+ *
+ * Note: if the param_val is a pointer pointing to a buffer, the maximum size
+ * of the buffer is 4KiB(PAGE_SIZE).
+ */
+struct amdxdna_drm_config_hwctx {
+ __u32 handle;
+ __u32 param_type;
+ __u64 param_val;
+ __u32 param_val_size;
+ __u32 pad;
+};
+
+#define DRM_IOCTL_AMDXDNA_CREATE_HWCTX \
+ DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDXDNA_CREATE_HWCTX, \
+ struct amdxdna_drm_create_hwctx)
+
+#define DRM_IOCTL_AMDXDNA_DESTROY_HWCTX \
+ DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDXDNA_DESTROY_HWCTX, \
+ struct amdxdna_drm_destroy_hwctx)
+
+#define DRM_IOCTL_AMDXDNA_CONFIG_HWCTX \
+ DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDXDNA_CONFIG_HWCTX, \
+ struct amdxdna_drm_config_hwctx)
+
#if defined(__cplusplus)
} /* extern c end */
#endif
--
2.34.1On 10/11/2024 5:12 PM, Lizhi Hou wrote: > The hardware can be shared among multiple user applications. The > hardware resources are allocated/freed based on the request from > user application via driver IOCTLs. > > DRM_IOCTL_AMDXDNA_CREATE_HWCTX > Allocate tile columns and create a hardware context structure to track the > usage and status of the resources. A hardware context ID is returned for > XDNA command execution. > > DRM_IOCTL_AMDXDNA_DESTROY_HWCTX > Release hardware context based on its ID. The tile columns belong to > this hardware context will be reclaimed. > > DRM_IOCTL_AMDXDNA_CONFIG_HWCTX > Config hardware context. Bind the hardware context to the required > resources. > > Co-developed-by: Min Ma <min.ma@amd.com> > Signed-off-by: Min Ma <min.ma@amd.com> > Signed-off-by: Lizhi Hou <lizhi.hou@amd.com> Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
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