@@ -1186,6 +1186,7 @@ S: Supported
T: git https://gitlab.freedesktop.org/drm/misc/kernel.git
F: Documentation/accel/amdxdna/
F: drivers/accel/amdxdna/
+F: include/trace/events/amdxdna.h
F: include/uapi/drm/amdxdna_accel.h
AMD XGBE DRIVER
@@ -1,9 +1,12 @@
# SPDX-License-Identifier: GPL-2.0-only
amdxdna-y := \
+ aie2_message.o \
aie2_pci.o \
aie2_psp.o \
aie2_smu.o \
+ amdxdna_mailbox.o \
+ amdxdna_mailbox_helper.o \
amdxdna_pci_drv.o \
amdxdna_sysfs.o \
npu1_regs.o \
new file mode 100644
@@ -0,0 +1,194 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2023-2024, Advanced Micro Devices, Inc.
+ */
+
+#include <drm/drm_device.h>
+#include <drm/drm_print.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+
+#include "aie2_msg_priv.h"
+#include "aie2_pci.h"
+#include "amdxdna_mailbox.h"
+#include "amdxdna_mailbox_helper.h"
+#include "amdxdna_pci_drv.h"
+
+#define DECLARE_AIE2_MSG(name, op) \
+ DECLARE_XDNA_MSG_COMMON(name, op, MAX_AIE2_STATUS_CODE)
+
+static int aie2_send_mgmt_msg_wait(struct amdxdna_dev_hdl *ndev,
+ struct xdna_mailbox_msg *msg)
+{
+ struct amdxdna_dev *xdna = ndev->xdna;
+ struct xdna_notify *hdl = msg->handle;
+ int ret;
+
+ if (!ndev->mgmt_chann)
+ return -ENODEV;
+
+ drm_WARN_ON(&xdna->ddev, !mutex_is_locked(&xdna->dev_lock));
+ ret = xdna_send_msg_wait(xdna, ndev->mgmt_chann, msg);
+ if (ret == -ETIME) {
+ xdna_mailbox_stop_channel(ndev->mgmt_chann);
+ xdna_mailbox_destroy_channel(ndev->mgmt_chann);
+ ndev->mgmt_chann = NULL;
+ }
+
+ if (!ret && *hdl->data != AIE2_STATUS_SUCCESS) {
+ XDNA_ERR(xdna, "command opcode 0x%x failed, status 0x%x",
+ msg->opcode, *hdl->data);
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
+int aie2_suspend_fw(struct amdxdna_dev_hdl *ndev)
+{
+ DECLARE_AIE2_MSG(suspend, MSG_OP_SUSPEND);
+
+ return aie2_send_mgmt_msg_wait(ndev, &msg);
+}
+
+int aie2_resume_fw(struct amdxdna_dev_hdl *ndev)
+{
+ DECLARE_AIE2_MSG(suspend, MSG_OP_RESUME);
+
+ return aie2_send_mgmt_msg_wait(ndev, &msg);
+}
+
+int aie2_set_runtime_cfg(struct amdxdna_dev_hdl *ndev, u32 type, u64 value)
+{
+ DECLARE_AIE2_MSG(set_runtime_cfg, MSG_OP_SET_RUNTIME_CONFIG);
+
+ req.type = type;
+ req.value = value;
+
+ return aie2_send_mgmt_msg_wait(ndev, &msg);
+}
+
+int aie2_get_runtime_cfg(struct amdxdna_dev_hdl *ndev, u32 type, u64 *value)
+{
+ DECLARE_AIE2_MSG(get_runtime_cfg, MSG_OP_GET_RUNTIME_CONFIG);
+ int ret;
+
+ req.type = type;
+ ret = aie2_send_mgmt_msg_wait(ndev, &msg);
+ if (ret) {
+ XDNA_ERR(ndev->xdna, "Failed to get runtime config, ret %d", ret);
+ return ret;
+ }
+
+ *value = resp.value;
+ return 0;
+}
+
+int aie2_check_protocol_version(struct amdxdna_dev_hdl *ndev)
+{
+ DECLARE_AIE2_MSG(protocol_version, MSG_OP_GET_PROTOCOL_VERSION);
+ struct amdxdna_dev *xdna = ndev->xdna;
+ int ret;
+
+ ret = aie2_send_mgmt_msg_wait(ndev, &msg);
+ if (ret) {
+ XDNA_ERR(xdna, "Failed to get protocol version, ret %d", ret);
+ return ret;
+ }
+
+ if (resp.major != ndev->priv->protocol_major) {
+ XDNA_ERR(xdna, "Incompatible firmware protocol version major %d minor %d",
+ resp.major, resp.minor);
+ return -EINVAL;
+ }
+
+ if (resp.minor < ndev->priv->protocol_minor) {
+ XDNA_ERR(xdna, "Firmware minor version smaller than supported");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+int aie2_assign_mgmt_pasid(struct amdxdna_dev_hdl *ndev, u16 pasid)
+{
+ DECLARE_AIE2_MSG(assign_mgmt_pasid, MSG_OP_ASSIGN_MGMT_PASID);
+
+ req.pasid = pasid;
+
+ return aie2_send_mgmt_msg_wait(ndev, &msg);
+}
+
+int aie2_query_aie_version(struct amdxdna_dev_hdl *ndev, struct aie_version *version)
+{
+ DECLARE_AIE2_MSG(aie_version_info, MSG_OP_QUERY_AIE_VERSION);
+ struct amdxdna_dev *xdna = ndev->xdna;
+ int ret;
+
+ ret = aie2_send_mgmt_msg_wait(ndev, &msg);
+ if (ret)
+ return ret;
+
+ XDNA_DBG(xdna, "Query AIE version - major: %u minor: %u completed",
+ resp.major, resp.minor);
+
+ version->major = resp.major;
+ version->minor = resp.minor;
+
+ return 0;
+}
+
+int aie2_query_aie_metadata(struct amdxdna_dev_hdl *ndev, struct aie_metadata *metadata)
+{
+ DECLARE_AIE2_MSG(aie_tile_info, MSG_OP_QUERY_AIE_TILE_INFO);
+ int ret;
+
+ ret = aie2_send_mgmt_msg_wait(ndev, &msg);
+ if (ret)
+ return ret;
+
+ metadata->size = resp.info.size;
+ metadata->cols = resp.info.cols;
+ metadata->rows = resp.info.rows;
+
+ metadata->version.major = resp.info.major;
+ metadata->version.minor = resp.info.minor;
+
+ metadata->core.row_count = resp.info.core_rows;
+ metadata->core.row_start = resp.info.core_row_start;
+ metadata->core.dma_channel_count = resp.info.core_dma_channels;
+ metadata->core.lock_count = resp.info.core_locks;
+ metadata->core.event_reg_count = resp.info.core_events;
+
+ metadata->mem.row_count = resp.info.mem_rows;
+ metadata->mem.row_start = resp.info.mem_row_start;
+ metadata->mem.dma_channel_count = resp.info.mem_dma_channels;
+ metadata->mem.lock_count = resp.info.mem_locks;
+ metadata->mem.event_reg_count = resp.info.mem_events;
+
+ metadata->shim.row_count = resp.info.shim_rows;
+ metadata->shim.row_start = resp.info.shim_row_start;
+ metadata->shim.dma_channel_count = resp.info.shim_dma_channels;
+ metadata->shim.lock_count = resp.info.shim_locks;
+ metadata->shim.event_reg_count = resp.info.shim_events;
+
+ return 0;
+}
+
+int aie2_query_firmware_version(struct amdxdna_dev_hdl *ndev,
+ struct amdxdna_fw_ver *fw_ver)
+{
+ DECLARE_AIE2_MSG(firmware_version, MSG_OP_GET_FIRMWARE_VERSION);
+ int ret;
+
+ ret = aie2_send_mgmt_msg_wait(ndev, &msg);
+ if (ret)
+ return ret;
+
+ fw_ver->major = resp.major;
+ fw_ver->minor = resp.minor;
+ fw_ver->sub = resp.sub;
+ fw_ver->build = resp.build;
+
+ return 0;
+}
new file mode 100644
@@ -0,0 +1,370 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2022-2024, Advanced Micro Devices, Inc.
+ */
+
+#ifndef _AIE2_MSG_PRIV_H_
+#define _AIE2_MSG_PRIV_H_
+
+enum aie2_msg_opcode {
+ MSG_OP_CREATE_CONTEXT = 0x2,
+ MSG_OP_DESTROY_CONTEXT = 0x3,
+ MSG_OP_SYNC_BO = 0x7,
+ MSG_OP_EXECUTE_BUFFER_CF = 0xC,
+ MSG_OP_QUERY_COL_STATUS = 0xD,
+ MSG_OP_QUERY_AIE_TILE_INFO = 0xE,
+ MSG_OP_QUERY_AIE_VERSION = 0xF,
+ MSG_OP_EXEC_DPU = 0x10,
+ MSG_OP_CONFIG_CU = 0x11,
+ MSG_OP_CHAIN_EXEC_BUFFER_CF = 0x12,
+ MSG_OP_CHAIN_EXEC_DPU = 0x13,
+ MSG_OP_MAX_XRT_OPCODE,
+ MSG_OP_SUSPEND = 0x101,
+ MSG_OP_RESUME = 0x102,
+ MSG_OP_ASSIGN_MGMT_PASID = 0x103,
+ MSG_OP_INVOKE_SELF_TEST = 0x104,
+ MSG_OP_MAP_HOST_BUFFER = 0x106,
+ MSG_OP_GET_FIRMWARE_VERSION = 0x108,
+ MSG_OP_SET_RUNTIME_CONFIG = 0x10A,
+ MSG_OP_GET_RUNTIME_CONFIG = 0x10B,
+ MSG_OP_REGISTER_ASYNC_EVENT_MSG = 0x10C,
+ MSG_OP_MAX_DRV_OPCODE,
+ MSG_OP_GET_PROTOCOL_VERSION = 0x301,
+ MSG_OP_MAX_OPCODE
+};
+
+enum aie2_msg_status {
+ AIE2_STATUS_SUCCESS = 0x0,
+ /* AIE Error codes */
+ AIE2_STATUS_AIE_SATURATION_ERROR = 0x1000001,
+ AIE2_STATUS_AIE_FP_ERROR = 0x1000002,
+ AIE2_STATUS_AIE_STREAM_ERROR = 0x1000003,
+ AIE2_STATUS_AIE_ACCESS_ERROR = 0x1000004,
+ AIE2_STATUS_AIE_BUS_ERROR = 0x1000005,
+ AIE2_STATUS_AIE_INSTRUCTION_ERROR = 0x1000006,
+ AIE2_STATUS_AIE_ECC_ERROR = 0x1000007,
+ AIE2_STATUS_AIE_LOCK_ERROR = 0x1000008,
+ AIE2_STATUS_AIE_DMA_ERROR = 0x1000009,
+ AIE2_STATUS_AIE_MEM_PARITY_ERROR = 0x100000a,
+ AIE2_STATUS_AIE_PWR_CFG_ERROR = 0x100000b,
+ AIE2_STATUS_AIE_BACKTRACK_ERROR = 0x100000c,
+ AIE2_STATUS_MAX_AIE_STATUS_CODE,
+ /* MGMT ERT Error codes */
+ AIE2_STATUS_MGMT_ERT_SELF_TEST_FAILURE = 0x2000001,
+ AIE2_STATUS_MGMT_ERT_HASH_MISMATCH,
+ AIE2_STATUS_MGMT_ERT_NOAVAIL,
+ AIE2_STATUS_MGMT_ERT_INVALID_PARAM,
+ AIE2_STATUS_MGMT_ERT_ENTER_SUSPEND_FAILURE,
+ AIE2_STATUS_MGMT_ERT_BUSY,
+ AIE2_STATUS_MGMT_ERT_APPLICATION_ACTIVE,
+ MAX_MGMT_ERT_STATUS_CODE,
+ /* APP ERT Error codes */
+ AIE2_STATUS_APP_ERT_FIRST_ERROR = 0x3000001,
+ AIE2_STATUS_APP_INVALID_INSTR,
+ AIE2_STATUS_APP_LOAD_PDI_FAIL,
+ MAX_APP_ERT_STATUS_CODE,
+ /* NPU RTOS Error Codes */
+ AIE2_STATUS_INVALID_INPUT_BUFFER = 0x4000001,
+ AIE2_STATUS_INVALID_COMMAND,
+ AIE2_STATUS_INVALID_PARAM,
+ AIE2_STATUS_INVALID_OPERATION = 0x4000006,
+ AIE2_STATUS_ASYNC_EVENT_MSGS_FULL,
+ AIE2_STATUS_MAX_RTOS_STATUS_CODE,
+ MAX_AIE2_STATUS_CODE
+};
+
+struct assign_mgmt_pasid_req {
+ __u16 pasid;
+ __u16 reserved;
+} __packed;
+
+struct assign_mgmt_pasid_resp {
+ enum aie2_msg_status status;
+} __packed;
+
+struct map_host_buffer_req {
+ __u32 context_id;
+ __u64 buf_addr;
+ __u64 buf_size;
+} __packed;
+
+struct map_host_buffer_resp {
+ enum aie2_msg_status status;
+} __packed;
+
+#define MAX_CQ_PAIRS 2
+struct cq_info {
+ __u32 head_addr;
+ __u32 tail_addr;
+ __u32 buf_addr;
+ __u32 buf_size;
+};
+
+struct cq_pair {
+ struct cq_info x2i_q;
+ struct cq_info i2x_q;
+};
+
+struct create_ctx_req {
+ __u32 aie_type;
+ __u8 start_col;
+ __u8 num_col;
+ __u16 reserved;
+ __u8 num_cq_pairs_requested;
+ __u8 reserved1;
+ __u16 pasid;
+ __u32 pad[2];
+ __u32 sec_comm_target_type;
+ __u32 context_priority;
+} __packed;
+
+struct create_ctx_resp {
+ enum aie2_msg_status status;
+ __u32 context_id;
+ __u16 msix_id;
+ __u8 num_cq_pairs_allocated;
+ __u8 reserved;
+ struct cq_pair cq_pair[MAX_CQ_PAIRS];
+} __packed;
+
+struct destroy_ctx_req {
+ __u32 context_id;
+} __packed;
+
+struct destroy_ctx_resp {
+ enum aie2_msg_status status;
+} __packed;
+
+struct execute_buffer_req {
+ __u32 cu_idx;
+ __u32 payload[19];
+} __packed;
+
+struct exec_dpu_req {
+ __u64 inst_buf_addr;
+ __u32 inst_size;
+ __u32 inst_prop_cnt;
+ __u32 cu_idx;
+ __u32 payload[35];
+} __packed;
+
+struct execute_buffer_resp {
+ enum aie2_msg_status status;
+} __packed;
+
+struct aie_tile_info {
+ __u32 size;
+ __u16 major;
+ __u16 minor;
+ __u16 cols;
+ __u16 rows;
+ __u16 core_rows;
+ __u16 mem_rows;
+ __u16 shim_rows;
+ __u16 core_row_start;
+ __u16 mem_row_start;
+ __u16 shim_row_start;
+ __u16 core_dma_channels;
+ __u16 mem_dma_channels;
+ __u16 shim_dma_channels;
+ __u16 core_locks;
+ __u16 mem_locks;
+ __u16 shim_locks;
+ __u16 core_events;
+ __u16 mem_events;
+ __u16 shim_events;
+ __u16 reserved;
+};
+
+struct aie_tile_info_req {
+ __u32 reserved;
+} __packed;
+
+struct aie_tile_info_resp {
+ enum aie2_msg_status status;
+ struct aie_tile_info info;
+} __packed;
+
+struct aie_version_info_req {
+ __u32 reserved;
+} __packed;
+
+struct aie_version_info_resp {
+ enum aie2_msg_status status;
+ __u16 major;
+ __u16 minor;
+} __packed;
+
+struct aie_column_info_req {
+ __u64 dump_buff_addr;
+ __u32 dump_buff_size;
+ __u32 num_cols;
+ __u32 aie_bitmap;
+} __packed;
+
+struct aie_column_info_resp {
+ enum aie2_msg_status status;
+ __u32 size;
+} __packed;
+
+struct suspend_req {
+ __u32 place_holder;
+} __packed;
+
+struct suspend_resp {
+ enum aie2_msg_status status;
+} __packed;
+
+struct resume_req {
+ __u32 place_holder;
+} __packed;
+
+struct resume_resp {
+ enum aie2_msg_status status;
+} __packed;
+
+struct check_header_hash_req {
+ __u64 hash_high;
+ __u64 hash_low;
+} __packed;
+
+struct check_header_hash_resp {
+ enum aie2_msg_status status;
+} __packed;
+
+struct query_error_req {
+ __u64 buf_addr;
+ __u32 buf_size;
+ __u32 next_row;
+ __u32 next_column;
+ __u32 next_module;
+} __packed;
+
+struct query_error_resp {
+ enum aie2_msg_status status;
+ __u32 num_err;
+ __u32 has_next_err;
+ __u32 next_row;
+ __u32 next_column;
+ __u32 next_module;
+} __packed;
+
+struct protocol_version_req {
+ __u32 reserved;
+} __packed;
+
+struct protocol_version_resp {
+ enum aie2_msg_status status;
+ __u32 major;
+ __u32 minor;
+} __packed;
+
+struct firmware_version_req {
+ __u32 reserved;
+} __packed;
+
+struct firmware_version_resp {
+ enum aie2_msg_status status;
+ __u32 major;
+ __u32 minor;
+ __u32 sub;
+ __u32 build;
+} __packed;
+
+#define MAX_NUM_CUS 32
+#define AIE2_MSG_CFG_CU_PDI_ADDR GENMASK(16, 0)
+#define AIE2_MSG_CFG_CU_FUNC GENMASK(24, 17)
+struct config_cu_req {
+ __u32 num_cus;
+ __u32 cfgs[MAX_NUM_CUS];
+} __packed;
+
+struct config_cu_resp {
+ enum aie2_msg_status status;
+} __packed;
+
+struct set_runtime_cfg_req {
+ __u32 type;
+ __u64 value;
+} __packed;
+
+struct set_runtime_cfg_resp {
+ enum aie2_msg_status status;
+} __packed;
+
+struct get_runtime_cfg_req {
+ __u32 type;
+} __packed;
+
+struct get_runtime_cfg_resp {
+ enum aie2_msg_status status;
+ __u64 value;
+} __packed;
+
+enum async_event_type {
+ ASYNC_EVENT_TYPE_AIE_ERROR,
+ ASYNC_EVENT_TYPE_EXCEPTION,
+ MAX_ASYNC_EVENT_TYPE
+};
+
+#define ASYNC_BUF_SIZE SZ_8K
+struct async_event_msg_req {
+ __u64 buf_addr;
+ __u32 buf_size;
+} __packed;
+
+struct async_event_msg_resp {
+ enum aie2_msg_status status;
+ enum async_event_type type;
+} __packed;
+
+#define MAX_CHAIN_CMDBUF_SIZE SZ_4K
+#define slot_cf_has_space(offset, payload_size) \
+ (MAX_CHAIN_CMDBUF_SIZE - ((offset) + (payload_size)) > \
+ offsetof(struct cmd_chain_slot_execbuf_cf, args[0]))
+struct cmd_chain_slot_execbuf_cf {
+ __u32 cu_idx;
+ __u32 arg_cnt;
+ __u32 args[] __counted_by(arg_cnt);
+};
+
+#define slot_dpu_has_space(offset, payload_size) \
+ (MAX_CHAIN_CMDBUF_SIZE - ((offset) + (payload_size)) > \
+ offsetof(struct cmd_chain_slot_dpu, args[0]))
+struct cmd_chain_slot_dpu {
+ __u64 inst_buf_addr;
+ __u32 inst_size;
+ __u32 inst_prop_cnt;
+ __u32 cu_idx;
+ __u32 arg_cnt;
+#define MAX_DPU_ARGS_SIZE (34 * sizeof(__u32))
+ __u32 args[] __counted_by(arg_cnt);
+};
+
+struct cmd_chain_req {
+ __u64 buf_addr;
+ __u32 buf_size;
+ __u32 count;
+} __packed;
+
+struct cmd_chain_resp {
+ enum aie2_msg_status status;
+ __u32 fail_cmd_idx;
+ enum aie2_msg_status fail_cmd_status;
+} __packed;
+
+#define AIE2_MSG_SYNC_BO_SRC_TYPE GENMASK(3, 0)
+#define AIE2_MSG_SYNC_BO_DST_TYPE GENMASK(7, 4)
+struct sync_bo_req {
+ __u64 src_addr;
+ __u64 dst_addr;
+ __u32 size;
+#define SYNC_BO_DEV_MEM 0
+#define SYNC_BO_HOST_MEM 2
+ __u32 type;
+} __packed;
+
+struct sync_bo_resp {
+ enum aie2_msg_status status;
+} __packed;
+#endif /* _AIE2_MSG_PRIV_H_ */
@@ -9,16 +9,210 @@
#include <linux/errno.h>
#include <linux/firmware.h>
#include <linux/iommu.h>
+#include <linux/iopoll.h>
#include <linux/pci.h>
+#include "aie2_msg_priv.h"
#include "aie2_pci.h"
+#include "amdxdna_mailbox.h"
#include "amdxdna_pci_drv.h"
+/*
+ * The management mailbox channel is allocated by firmware.
+ * The related register and ring buffer information is on SRAM BAR.
+ * This struct is the register layout.
+ */
+struct mgmt_mbox_chann_info {
+ u32 x2i_tail;
+ u32 x2i_head;
+ u32 x2i_buf;
+ u32 x2i_buf_sz;
+ u32 i2x_tail;
+ u32 i2x_head;
+ u32 i2x_buf;
+ u32 i2x_buf_sz;
+};
+
+static void aie2_dump_chann_info_debug(struct amdxdna_dev_hdl *ndev)
+{
+ struct amdxdna_dev *xdna = ndev->xdna;
+
+ XDNA_DBG(xdna, "i2x tail 0x%x", ndev->mgmt_i2x.mb_tail_ptr_reg);
+ XDNA_DBG(xdna, "i2x head 0x%x", ndev->mgmt_i2x.mb_head_ptr_reg);
+ XDNA_DBG(xdna, "i2x ringbuf 0x%x", ndev->mgmt_i2x.rb_start_addr);
+ XDNA_DBG(xdna, "i2x rsize 0x%x", ndev->mgmt_i2x.rb_size);
+ XDNA_DBG(xdna, "x2i tail 0x%x", ndev->mgmt_x2i.mb_tail_ptr_reg);
+ XDNA_DBG(xdna, "x2i head 0x%x", ndev->mgmt_x2i.mb_head_ptr_reg);
+ XDNA_DBG(xdna, "x2i ringbuf 0x%x", ndev->mgmt_x2i.rb_start_addr);
+ XDNA_DBG(xdna, "x2i rsize 0x%x", ndev->mgmt_x2i.rb_size);
+ XDNA_DBG(xdna, "x2i chann index 0x%x", ndev->mgmt_chan_idx);
+}
+
+static int aie2_get_mgmt_chann_info(struct amdxdna_dev_hdl *ndev)
+{
+ struct mgmt_mbox_chann_info info_regs;
+ struct xdna_mailbox_chann_res *i2x;
+ struct xdna_mailbox_chann_res *x2i;
+ u32 addr, off;
+ u32 *reg;
+ int ret;
+ int i;
+
+ /*
+ * Once firmware is alive, it will write management channel
+ * information in SRAM BAR and write the address of that information
+ * at FW_ALIVE_OFF offset in SRMA BAR.
+ *
+ * Read a non-zero value from FW_ALIVE_OFF implies that firmware
+ * is alive.
+ */
+ ret = readx_poll_timeout(readl, SRAM_GET_ADDR(ndev, FW_ALIVE_OFF),
+ addr, addr, AIE2_INTERVAL, AIE2_TIMEOUT);
+ if (ret || !addr)
+ return -ETIME;
+
+ off = AIE2_SRAM_OFF(ndev, addr);
+ reg = (u32 *)&info_regs;
+ for (i = 0; i < sizeof(info_regs) / sizeof(u32); i++)
+ reg[i] = readl(ndev->sram_base + off + i * sizeof(u32));
+
+ i2x = &ndev->mgmt_i2x;
+ x2i = &ndev->mgmt_x2i;
+
+ i2x->mb_head_ptr_reg = AIE2_MBOX_OFF(ndev, info_regs.i2x_head);
+ i2x->mb_tail_ptr_reg = AIE2_MBOX_OFF(ndev, info_regs.i2x_tail);
+ i2x->rb_start_addr = AIE2_SRAM_OFF(ndev, info_regs.i2x_buf);
+ i2x->rb_size = info_regs.i2x_buf_sz;
+
+ x2i->mb_head_ptr_reg = AIE2_MBOX_OFF(ndev, info_regs.x2i_head);
+ x2i->mb_tail_ptr_reg = AIE2_MBOX_OFF(ndev, info_regs.x2i_tail);
+ x2i->rb_start_addr = AIE2_SRAM_OFF(ndev, info_regs.x2i_buf);
+ x2i->rb_size = info_regs.x2i_buf_sz;
+ ndev->mgmt_chan_idx = CHANN_INDEX(ndev, x2i->rb_start_addr);
+
+ aie2_dump_chann_info_debug(ndev);
+
+ /* Must clear address at FW_ALIVE_OFF */
+ writel(0, SRAM_GET_ADDR(ndev, FW_ALIVE_OFF));
+
+ return 0;
+}
+
+static int aie2_runtime_cfg(struct amdxdna_dev_hdl *ndev)
+{
+ const struct rt_config *cfg = &ndev->priv->rt_config;
+ u64 value;
+ int ret;
+
+ ret = aie2_set_runtime_cfg(ndev, cfg->type, cfg->value);
+ if (ret) {
+ XDNA_ERR(ndev->xdna, "Set runtime type %d value %d failed",
+ cfg->type, cfg->value);
+ return ret;
+ }
+
+ ret = aie2_get_runtime_cfg(ndev, cfg->type, &value);
+ if (ret) {
+ XDNA_ERR(ndev->xdna, "Get runtime cfg failed");
+ return ret;
+ }
+
+ if (value != cfg->value)
+ return -EINVAL;
+
+ return 0;
+}
+
+static int aie2_xdna_reset(struct amdxdna_dev_hdl *ndev)
+{
+ int ret;
+
+ ret = aie2_suspend_fw(ndev);
+ if (ret) {
+ XDNA_ERR(ndev->xdna, "Suspend firmware failed");
+ return ret;
+ }
+
+ ret = aie2_resume_fw(ndev);
+ if (ret) {
+ XDNA_ERR(ndev->xdna, "Resume firmware failed");
+ return ret;
+ }
+
+ return 0;
+}
+
+static int aie2_mgmt_fw_init(struct amdxdna_dev_hdl *ndev)
+{
+ int ret;
+
+ ret = aie2_check_protocol_version(ndev);
+ if (ret) {
+ XDNA_ERR(ndev->xdna, "Check header hash failed");
+ return ret;
+ }
+
+ ret = aie2_runtime_cfg(ndev);
+ if (ret) {
+ XDNA_ERR(ndev->xdna, "Runtime config failed");
+ return ret;
+ }
+
+ ret = aie2_assign_mgmt_pasid(ndev, 0);
+ if (ret) {
+ XDNA_ERR(ndev->xdna, "Can not assign PASID");
+ return ret;
+ }
+
+ ret = aie2_xdna_reset(ndev);
+ if (ret) {
+ XDNA_ERR(ndev->xdna, "Reset firmware failed");
+ return ret;
+ }
+
+ return 0;
+}
+
+static int aie2_mgmt_fw_query(struct amdxdna_dev_hdl *ndev)
+{
+ int ret;
+
+ ret = aie2_query_firmware_version(ndev, &ndev->xdna->fw_ver);
+ if (ret) {
+ XDNA_ERR(ndev->xdna, "query firmware version failed");
+ return ret;
+ }
+
+ ret = aie2_query_aie_version(ndev, &ndev->version);
+ if (ret) {
+ XDNA_ERR(ndev->xdna, "Query AIE version failed");
+ return ret;
+ }
+
+ ret = aie2_query_aie_metadata(ndev, &ndev->metadata);
+ if (ret) {
+ XDNA_ERR(ndev->xdna, "Query AIE metadata failed");
+ return ret;
+ }
+
+ return 0;
+}
+
+static void aie2_mgmt_fw_fini(struct amdxdna_dev_hdl *ndev)
+{
+ if (aie2_suspend_fw(ndev))
+ XDNA_ERR(ndev->xdna, "Suspend_fw failed");
+ XDNA_DBG(ndev->xdna, "Firmware suspended");
+}
+
static void aie2_hw_stop(struct amdxdna_dev *xdna)
{
struct pci_dev *pdev = to_pci_dev(xdna->ddev.dev);
struct amdxdna_dev_hdl *ndev = xdna->dev_handle;
+ aie2_mgmt_fw_fini(ndev);
+ xdna_mailbox_stop_channel(ndev->mgmt_chann);
+ xdna_mailbox_destroy_channel(ndev->mgmt_chann);
aie2_psp_stop(ndev->psp_hdl);
aie2_smu_fini(ndev);
pci_disable_device(pdev);
@@ -28,7 +222,9 @@ static int aie2_hw_start(struct amdxdna_dev *xdna)
{
struct pci_dev *pdev = to_pci_dev(xdna->ddev.dev);
struct amdxdna_dev_hdl *ndev = xdna->dev_handle;
- int ret;
+ struct xdna_mailbox_res mbox_res;
+ u32 xdna_mailbox_intr_reg;
+ int mgmt_mb_irq, ret;
ret = pci_enable_device(pdev);
if (ret) {
@@ -49,8 +245,56 @@ static int aie2_hw_start(struct amdxdna_dev *xdna)
goto fini_smu;
}
+ ret = aie2_get_mgmt_chann_info(ndev);
+ if (ret) {
+ XDNA_ERR(xdna, "firmware is not alive");
+ goto stop_psp;
+ }
+
+ mbox_res.ringbuf_base = (u64)ndev->sram_base;
+ mbox_res.ringbuf_size = pci_resource_len(pdev, xdna->dev_info->sram_bar);
+ mbox_res.mbox_base = (u64)ndev->mbox_base;
+ mbox_res.mbox_size = MBOX_SIZE(ndev);
+ mbox_res.name = "xdna_mailbox";
+ ndev->mbox = xdnam_mailbox_create(&xdna->ddev, &mbox_res);
+ if (!ndev->mbox) {
+ XDNA_ERR(xdna, "failed to create mailbox device");
+ ret = -ENODEV;
+ goto stop_psp;
+ }
+
+ mgmt_mb_irq = pci_irq_vector(pdev, ndev->mgmt_chan_idx);
+ if (mgmt_mb_irq < 0) {
+ ret = mgmt_mb_irq;
+ XDNA_ERR(xdna, "failed to alloc irq vector, ret %d", ret);
+ goto stop_psp;
+ }
+
+ xdna_mailbox_intr_reg = ndev->mgmt_i2x.mb_head_ptr_reg + 4;
+ ndev->mgmt_chann = xdna_mailbox_create_channel(ndev->mbox,
+ &ndev->mgmt_x2i,
+ &ndev->mgmt_i2x,
+ xdna_mailbox_intr_reg,
+ mgmt_mb_irq);
+ if (!ndev->mgmt_chann) {
+ XDNA_ERR(xdna, "failed to create management mailbox channel");
+ ret = -EINVAL;
+ goto stop_psp;
+ }
+
+ ret = aie2_mgmt_fw_init(ndev);
+ if (ret) {
+ XDNA_ERR(xdna, "initial mgmt firmware failed, ret %d", ret);
+ goto destroy_mgmt_chann;
+ }
+
return 0;
+destroy_mgmt_chann:
+ xdna_mailbox_stop_channel(ndev->mgmt_chann);
+ xdna_mailbox_destroy_channel(ndev->mgmt_chann);
+stop_psp:
+ aie2_psp_stop(ndev->psp_hdl);
fini_smu:
aie2_smu_fini(ndev);
disable_dev:
@@ -108,6 +352,7 @@ static int aie2_init(struct amdxdna_dev *xdna)
ndev->sram_base = tbl[xdna->dev_info->sram_bar];
ndev->smu_base = tbl[xdna->dev_info->smu_bar];
+ ndev->mbox_base = tbl[xdna->dev_info->mbox_bar];
ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
if (ret) {
@@ -152,9 +397,18 @@ static int aie2_init(struct amdxdna_dev *xdna)
goto disable_sva;
}
+ ret = aie2_mgmt_fw_query(ndev);
+ if (ret) {
+ XDNA_ERR(xdna, "Query firmware failed, ret %d", ret);
+ goto stop_hw;
+ }
+ ndev->total_col = ndev->metadata.cols;
+
release_firmware(fw);
return 0;
+stop_hw:
+ aie2_hw_stop(xdna);
disable_sva:
iommu_dev_disable_feature(&pdev->dev, IOMMU_DEV_FEAT_SVA);
free_irq:
@@ -6,6 +6,8 @@
#ifndef _AIE2_PCI_H_
#define _AIE2_PCI_H_
+#include "amdxdna_mailbox.h"
+
#define AIE2_INTERVAL 20000 /* us */
#define AIE2_TIMEOUT 1000000 /* us */
@@ -33,6 +35,17 @@
((_ndev)->sram_base + SRAM_REG_OFF((_ndev), (idx))); \
})
+#define CHAN_SLOT_SZ SZ_8K
+#define CHANN_INDEX(ndev, rbuf_off) \
+ (((rbuf_off) - SRAM_REG_OFF((ndev), MBOX_CHANN_OFF)) / CHAN_SLOT_SZ)
+
+#define MBOX_SIZE(ndev) \
+({ \
+ typeof(ndev) _ndev = (ndev); \
+ ((_ndev)->priv->mbox_size) ? (_ndev)->priv->mbox_size : \
+ pci_resource_len(NDEV2PDEV(_ndev), (_ndev)->xdna->dev_info->mbox_bar); \
+})
+
#define SMU_MPNPUCLK_FREQ_MAX(ndev) ((ndev)->priv->smu_mpnpuclk_freq_max)
#define SMU_HCLK_FREQ_MAX(ndev) ((ndev)->priv->smu_hclk_freq_max)
@@ -63,12 +76,37 @@ enum psp_reg_idx {
PSP_MAX_REGS /* Keep this at the end */
};
+struct amdxdna_fw_ver;
+
struct psp_config {
const void *fw_buf;
u32 fw_size;
void __iomem *psp_regs[PSP_MAX_REGS];
};
+struct aie_version {
+ u16 major;
+ u16 minor;
+};
+
+struct aie_tile_metadata {
+ u16 row_count;
+ u16 row_start;
+ u16 dma_channel_count;
+ u16 lock_count;
+ u16 event_reg_count;
+};
+
+struct aie_metadata {
+ u32 size;
+ u16 cols;
+ u16 rows;
+ struct aie_version version;
+ struct aie_tile_metadata core;
+ struct aie_tile_metadata mem;
+ struct aie_tile_metadata shim;
+};
+
struct clock_entry {
char name[16];
u32 freq_mhz;
@@ -84,9 +122,22 @@ struct amdxdna_dev_hdl {
const struct amdxdna_dev_priv *priv;
void __iomem *sram_base;
void __iomem *smu_base;
+ void __iomem *mbox_base;
struct psp_device *psp_hdl;
+
+ struct xdna_mailbox_chann_res mgmt_x2i;
+ struct xdna_mailbox_chann_res mgmt_i2x;
+ u32 mgmt_chan_idx;
+
+ u32 total_col;
+ struct aie_version version;
+ struct aie_metadata metadata;
struct clock_entry mp_npu_clock;
struct clock_entry h_clock;
+
+ /* Mailbox and the management channel */
+ struct mailbox *mbox;
+ struct mailbox_channel *mgmt_chann;
};
#define DEFINE_BAR_OFFSET(reg_name, bar, reg_addr) \
@@ -127,4 +178,15 @@ struct psp_device *aie2m_psp_create(struct drm_device *ddev, struct psp_config *
int aie2_psp_start(struct psp_device *psp);
void aie2_psp_stop(struct psp_device *psp);
+/* aie2_message.c */
+int aie2_suspend_fw(struct amdxdna_dev_hdl *ndev);
+int aie2_resume_fw(struct amdxdna_dev_hdl *ndev);
+int aie2_set_runtime_cfg(struct amdxdna_dev_hdl *ndev, u32 type, u64 value);
+int aie2_get_runtime_cfg(struct amdxdna_dev_hdl *ndev, u32 type, u64 *value);
+int aie2_check_protocol_version(struct amdxdna_dev_hdl *ndev);
+int aie2_assign_mgmt_pasid(struct amdxdna_dev_hdl *ndev, u16 pasid);
+int aie2_query_aie_version(struct amdxdna_dev_hdl *ndev, struct aie_version *version);
+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);
#endif /* _AIE2_PCI_H_ */
@@ -10,6 +10,8 @@
#include <linux/iopoll.h>
#include "aie2_pci.h"
+#include "amdxdna_mailbox.h"
+#include "amdxdna_pci_drv.h"
#define PSP_STATUS_READY BIT(31)
new file mode 100644
@@ -0,0 +1,576 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2022-2024, Advanced Micro Devices, Inc.
+ */
+
+#include <drm/drm_device.h>
+#include <drm/drm_managed.h>
+#include <linux/bitfield.h>
+#include <linux/iopoll.h>
+
+#define CREATE_TRACE_POINTS
+#include <trace/events/amdxdna.h>
+
+#include "amdxdna_mailbox.h"
+
+#define MB_ERR(chann, fmt, args...) \
+({ \
+ typeof(chann) _chann = chann; \
+ dev_err((_chann)->mb->dev, "xdna_mailbox.%d: "fmt, \
+ (_chann)->msix_irq, ##args); \
+})
+#define MB_DBG(chann, fmt, args...) \
+({ \
+ typeof(chann) _chann = chann; \
+ dev_dbg((_chann)->mb->dev, "xdna_mailbox.%d: "fmt, \
+ (_chann)->msix_irq, ##args); \
+})
+#define MB_WARN_ONCE(chann, fmt, args...) \
+({ \
+ typeof(chann) _chann = chann; \
+ dev_warn_once((_chann)->mb->dev, "xdna_mailbox.%d: "fmt, \
+ (_chann)->msix_irq, ##args); \
+})
+
+#define MAGIC_VAL 0x1D000000U
+#define MAGIC_VAL_MASK 0xFF000000
+#define MAX_MSG_ID_ENTRIES 256
+#define MSG_RX_TIMER 200 /* milliseconds */
+#define MAILBOX_NAME "xdna_mailbox"
+
+enum channel_res_type {
+ CHAN_RES_X2I,
+ CHAN_RES_I2X,
+ CHAN_RES_NUM
+};
+
+struct mailbox {
+ struct device *dev;
+ struct xdna_mailbox_res res;
+};
+
+struct mailbox_channel {
+ struct mailbox *mb;
+ struct xdna_mailbox_chann_res res[CHAN_RES_NUM];
+ int msix_irq;
+ u32 iohub_int_addr;
+ struct idr chan_idr;
+ spinlock_t chan_idr_lock; /* protect chan_idr */
+ u32 x2i_tail;
+
+ /* Received msg related fields */
+ struct workqueue_struct *work_q;
+ struct work_struct rx_work;
+ u32 i2x_head;
+ bool bad_state;
+};
+
+#define MSG_BODY_SZ GENMASK(10, 0)
+#define MSG_PROTO_VER GENMASK(23, 16)
+struct xdna_msg_header {
+ __u32 total_size;
+ __u32 sz_ver;
+ __u32 id;
+ __u32 opcode;
+} __packed;
+
+static_assert(sizeof(struct xdna_msg_header) == 16);
+
+struct mailbox_pkg {
+ struct xdna_msg_header header;
+ __u32 payload[];
+};
+
+/* The protocol version. */
+#define MSG_PROTOCOL_VERSION 0x1
+/* The tombstone value. */
+#define TOMBSTONE 0xDEADFACE
+
+struct mailbox_msg {
+ void *handle;
+ int (*notify_cb)(void *handle, const u32 *data, size_t size);
+ size_t pkg_size; /* package size in bytes */
+ struct mailbox_pkg pkg;
+};
+
+static void mailbox_reg_write(struct mailbox_channel *mb_chann, u32 mbox_reg, u32 data)
+{
+ struct xdna_mailbox_res *mb_res = &mb_chann->mb->res;
+ u64 ringbuf_addr = mb_res->mbox_base + mbox_reg;
+
+ writel(data, (void *)ringbuf_addr);
+}
+
+static u32 mailbox_reg_read(struct mailbox_channel *mb_chann, u32 mbox_reg)
+{
+ struct xdna_mailbox_res *mb_res = &mb_chann->mb->res;
+ u64 ringbuf_addr = mb_res->mbox_base + mbox_reg;
+
+ return readl((void *)ringbuf_addr);
+}
+
+static int mailbox_reg_read_non_zero(struct mailbox_channel *mb_chann, u32 mbox_reg, u32 *val)
+{
+ struct xdna_mailbox_res *mb_res = &mb_chann->mb->res;
+ u64 ringbuf_addr = mb_res->mbox_base + mbox_reg;
+ int ret, value;
+
+ /* Poll till value is not zero */
+ ret = readx_poll_timeout(readl, (void *)ringbuf_addr, value,
+ value, 1 /* us */, 100);
+ if (ret < 0)
+ return ret;
+
+ *val = value;
+ return 0;
+}
+
+static inline void
+mailbox_set_headptr(struct mailbox_channel *mb_chann, u32 headptr_val)
+{
+ mailbox_reg_write(mb_chann, mb_chann->res[CHAN_RES_I2X].mb_head_ptr_reg, headptr_val);
+ mb_chann->i2x_head = headptr_val;
+}
+
+static inline void
+mailbox_set_tailptr(struct mailbox_channel *mb_chann, u32 tailptr_val)
+{
+ mailbox_reg_write(mb_chann, mb_chann->res[CHAN_RES_X2I].mb_tail_ptr_reg, tailptr_val);
+ mb_chann->x2i_tail = tailptr_val;
+}
+
+static inline u32
+mailbox_get_headptr(struct mailbox_channel *mb_chann, enum channel_res_type type)
+{
+ return mailbox_reg_read(mb_chann, mb_chann->res[type].mb_head_ptr_reg);
+}
+
+static inline u32
+mailbox_get_tailptr(struct mailbox_channel *mb_chann, enum channel_res_type type)
+{
+ return mailbox_reg_read(mb_chann, mb_chann->res[type].mb_tail_ptr_reg);
+}
+
+static inline u32
+mailbox_get_ringbuf_size(struct mailbox_channel *mb_chann, enum channel_res_type type)
+{
+ return mb_chann->res[type].rb_size;
+}
+
+static inline int mailbox_validate_msgid(int msg_id)
+{
+ return (msg_id & MAGIC_VAL_MASK) == MAGIC_VAL;
+}
+
+static int mailbox_acquire_msgid(struct mailbox_channel *mb_chann, struct mailbox_msg *mb_msg)
+{
+ unsigned long flags;
+ int msg_id;
+
+ spin_lock_irqsave(&mb_chann->chan_idr_lock, flags);
+ msg_id = idr_alloc_cyclic(&mb_chann->chan_idr, mb_msg, 0,
+ MAX_MSG_ID_ENTRIES, GFP_NOWAIT);
+ spin_unlock_irqrestore(&mb_chann->chan_idr_lock, flags);
+ if (msg_id < 0)
+ return msg_id;
+
+ /*
+ * The IDR becomes less efficient when dealing with larger IDs.
+ * Thus, add MAGIC_VAL to the higher bits.
+ */
+ msg_id |= MAGIC_VAL;
+ return msg_id;
+}
+
+static void mailbox_release_msgid(struct mailbox_channel *mb_chann, int msg_id)
+{
+ unsigned long flags;
+
+ msg_id &= ~MAGIC_VAL_MASK;
+ spin_lock_irqsave(&mb_chann->chan_idr_lock, flags);
+ idr_remove(&mb_chann->chan_idr, msg_id);
+ spin_unlock_irqrestore(&mb_chann->chan_idr_lock, flags);
+}
+
+static int mailbox_release_msg(int id, void *p, void *data)
+{
+ struct mailbox_channel *mb_chann = data;
+ struct mailbox_msg *mb_msg = p;
+
+ MB_DBG(mb_chann, "msg_id 0x%x msg opcode 0x%x",
+ mb_msg->pkg.header.id, mb_msg->pkg.header.opcode);
+ mb_msg->notify_cb(mb_msg->handle, NULL, 0);
+ kfree(mb_msg);
+
+ return 0;
+}
+
+static int
+mailbox_send_msg(struct mailbox_channel *mb_chann, struct mailbox_msg *mb_msg)
+{
+ u32 ringbuf_size;
+ u32 head, tail;
+ u32 start_addr;
+ u64 write_addr;
+ u32 tmp_tail;
+
+ head = mailbox_get_headptr(mb_chann, CHAN_RES_X2I);
+ tail = mb_chann->x2i_tail;
+ ringbuf_size = mailbox_get_ringbuf_size(mb_chann, CHAN_RES_X2I);
+ start_addr = mb_chann->res[CHAN_RES_X2I].rb_start_addr;
+ tmp_tail = tail + mb_msg->pkg_size;
+
+ if (tail < head && tmp_tail >= head)
+ goto no_space;
+
+ if (tail >= head && (tmp_tail > ringbuf_size - sizeof(u32) &&
+ mb_msg->pkg_size >= head))
+ goto no_space;
+
+ if (tail >= head && tmp_tail > ringbuf_size - sizeof(u32)) {
+ write_addr = mb_chann->mb->res.ringbuf_base + start_addr + tail;
+ writel(TOMBSTONE, (void *)write_addr);
+
+ /* tombstone is set. Write from the start of the ringbuf */
+ tail = 0;
+ }
+
+ write_addr = mb_chann->mb->res.ringbuf_base + start_addr + tail;
+ memcpy_toio((void *)write_addr, &mb_msg->pkg, mb_msg->pkg_size);
+ mailbox_set_tailptr(mb_chann, tail + mb_msg->pkg_size);
+
+ trace_mbox_set_tail(MAILBOX_NAME, mb_chann->msix_irq,
+ mb_msg->pkg.header.opcode,
+ mb_msg->pkg.header.id);
+
+ return 0;
+
+no_space:
+ return -ENOSPC;
+}
+
+static int
+mailbox_get_resp(struct mailbox_channel *mb_chann, struct xdna_msg_header *header,
+ void *data)
+{
+ struct mailbox_msg *mb_msg;
+ unsigned long flags;
+ int msg_id;
+ int ret;
+
+ msg_id = header->id;
+ if (!mailbox_validate_msgid(msg_id)) {
+ MB_ERR(mb_chann, "Bad message ID 0x%x", msg_id);
+ return -EINVAL;
+ }
+
+ msg_id &= ~MAGIC_VAL_MASK;
+ spin_lock_irqsave(&mb_chann->chan_idr_lock, flags);
+ mb_msg = idr_find(&mb_chann->chan_idr, msg_id);
+ if (!mb_msg) {
+ MB_ERR(mb_chann, "Cannot find msg 0x%x", msg_id);
+ spin_unlock_irqrestore(&mb_chann->chan_idr_lock, flags);
+ return -EINVAL;
+ }
+ idr_remove(&mb_chann->chan_idr, msg_id);
+ spin_unlock_irqrestore(&mb_chann->chan_idr_lock, flags);
+
+ MB_DBG(mb_chann, "opcode 0x%x size %d id 0x%x",
+ header->opcode, header->total_size, header->id);
+ ret = mb_msg->notify_cb(mb_msg->handle, data, header->total_size);
+ if (unlikely(ret))
+ MB_ERR(mb_chann, "Message callback ret %d", ret);
+
+ kfree(mb_msg);
+ return ret;
+}
+
+static int mailbox_get_msg(struct mailbox_channel *mb_chann)
+{
+ struct xdna_msg_header header;
+ u32 msg_size, rest;
+ u32 ringbuf_size;
+ u32 head, tail;
+ u32 start_addr;
+ u64 read_addr;
+ int ret;
+
+ if (mailbox_reg_read_non_zero(mb_chann, mb_chann->res[CHAN_RES_I2X].mb_tail_ptr_reg, &tail))
+ return -EINVAL;
+ head = mb_chann->i2x_head;
+ ringbuf_size = mailbox_get_ringbuf_size(mb_chann, CHAN_RES_I2X);
+ start_addr = mb_chann->res[CHAN_RES_I2X].rb_start_addr;
+
+ if (unlikely(tail > ringbuf_size || !IS_ALIGNED(tail, 4))) {
+ MB_WARN_ONCE(mb_chann, "Invalid tail 0x%x", tail);
+ return -EINVAL;
+ }
+
+ /* ringbuf empty */
+ if (head == tail)
+ return -ENOENT;
+
+ if (head == ringbuf_size)
+ head = 0;
+
+ /* Peek size of the message or TOMBSTONE */
+ read_addr = mb_chann->mb->res.ringbuf_base + start_addr + head;
+ header.total_size = readl((void *)read_addr);
+ /* size is TOMBSTONE, set next read from 0 */
+ if (header.total_size == TOMBSTONE) {
+ if (head < tail) {
+ MB_WARN_ONCE(mb_chann, "Tombstone, head 0x%x tail 0x%x",
+ head, tail);
+ return -EINVAL;
+ }
+ mailbox_set_headptr(mb_chann, 0);
+ return 0;
+ }
+
+ if (unlikely(!header.total_size || !IS_ALIGNED(header.total_size, 4))) {
+ MB_WARN_ONCE(mb_chann, "Invalid total size 0x%x", header.total_size);
+ return -EINVAL;
+ }
+ msg_size = sizeof(header) + header.total_size;
+
+ if (msg_size > ringbuf_size - head || msg_size > tail - head) {
+ MB_WARN_ONCE(mb_chann, "Invalid message size %d, tail %d, head %d",
+ msg_size, tail, head);
+ return -EINVAL;
+ }
+
+ rest = sizeof(header) - sizeof(u32);
+ read_addr += sizeof(u32);
+ memcpy_fromio((u32 *)&header + 1, (void *)read_addr, rest);
+ read_addr += rest;
+
+ ret = mailbox_get_resp(mb_chann, &header, (u32 *)read_addr);
+
+ mailbox_set_headptr(mb_chann, head + msg_size);
+ /* After update head, it can equal to ringbuf_size. This is expected. */
+ trace_mbox_set_head(MAILBOX_NAME, mb_chann->msix_irq,
+ header.opcode, header.id);
+
+ return ret;
+}
+
+static irqreturn_t mailbox_irq_handler(int irq, void *p)
+{
+ struct mailbox_channel *mb_chann = p;
+
+ trace_mbox_irq_handle(MAILBOX_NAME, irq);
+ /* Schedule a rx_work to call the callback functions */
+ queue_work(mb_chann->work_q, &mb_chann->rx_work);
+ /* Clear IOHUB register */
+ mailbox_reg_write(mb_chann, mb_chann->iohub_int_addr, 0);
+
+ return IRQ_HANDLED;
+}
+
+static void mailbox_rx_worker(struct work_struct *rx_work)
+{
+ struct mailbox_channel *mb_chann;
+ int ret;
+
+ mb_chann = container_of(rx_work, struct mailbox_channel, rx_work);
+
+ if (READ_ONCE(mb_chann->bad_state)) {
+ MB_ERR(mb_chann, "Channel in bad state, work aborted");
+ return;
+ }
+
+ while (1) {
+ /*
+ * If return is 0, keep consuming next message, until there is
+ * no messages or an error happened.
+ */
+ ret = mailbox_get_msg(mb_chann);
+ if (ret == -ENOENT)
+ break;
+
+ /* Other error means device doesn't look good, disable irq. */
+ if (unlikely(ret)) {
+ MB_ERR(mb_chann, "Unexpected ret %d, disable irq", ret);
+ WRITE_ONCE(mb_chann->bad_state, true);
+ disable_irq(mb_chann->msix_irq);
+ break;
+ }
+ }
+}
+
+int xdna_mailbox_send_msg(struct mailbox_channel *mb_chann,
+ const struct xdna_mailbox_msg *msg, u64 tx_timeout)
+{
+ struct xdna_msg_header *header;
+ struct mailbox_msg *mb_msg;
+ size_t pkg_size;
+ int ret;
+
+ pkg_size = sizeof(*header) + msg->send_size;
+ if (pkg_size > mailbox_get_ringbuf_size(mb_chann, CHAN_RES_X2I)) {
+ MB_ERR(mb_chann, "Message size larger than ringbuf size");
+ return -EINVAL;
+ }
+
+ if (unlikely(!IS_ALIGNED(msg->send_size, 4))) {
+ MB_ERR(mb_chann, "Message must be 4 bytes align");
+ return -EINVAL;
+ }
+
+ /* The fist word in payload can NOT be TOMBSTONE */
+ if (unlikely(((u32 *)msg->send_data)[0] == TOMBSTONE)) {
+ MB_ERR(mb_chann, "Tomb stone in data");
+ return -EINVAL;
+ }
+
+ if (READ_ONCE(mb_chann->bad_state)) {
+ MB_ERR(mb_chann, "Channel in bad state");
+ return -EPIPE;
+ }
+
+ mb_msg = kzalloc(sizeof(*mb_msg) + pkg_size, GFP_KERNEL);
+ if (!mb_msg)
+ return -ENOMEM;
+
+ mb_msg->handle = msg->handle;
+ mb_msg->notify_cb = msg->notify_cb;
+ mb_msg->pkg_size = pkg_size;
+
+ header = &mb_msg->pkg.header;
+ /*
+ * Hardware use total_size and size to split huge message.
+ * We do not support it here. Thus the values are the same.
+ */
+ header->total_size = msg->send_size;
+ header->sz_ver = FIELD_PREP(MSG_BODY_SZ, msg->send_size) |
+ FIELD_PREP(MSG_PROTO_VER, MSG_PROTOCOL_VERSION);
+ header->opcode = msg->opcode;
+ memcpy(mb_msg->pkg.payload, msg->send_data, msg->send_size);
+
+ ret = mailbox_acquire_msgid(mb_chann, mb_msg);
+ if (unlikely(ret < 0)) {
+ MB_ERR(mb_chann, "mailbox_acquire_msgid failed");
+ goto msg_id_failed;
+ }
+ header->id = ret;
+
+ MB_DBG(mb_chann, "opcode 0x%x size %d id 0x%x",
+ header->opcode, header->total_size, header->id);
+
+ ret = mailbox_send_msg(mb_chann, mb_msg);
+ if (ret) {
+ MB_DBG(mb_chann, "Error in mailbox send msg, ret %d", ret);
+ goto release_id;
+ }
+
+ return 0;
+
+release_id:
+ mailbox_release_msgid(mb_chann, header->id);
+msg_id_failed:
+ kfree(mb_msg);
+ return ret;
+}
+
+struct mailbox_channel *
+xdna_mailbox_create_channel(struct mailbox *mb,
+ const struct xdna_mailbox_chann_res *x2i,
+ const struct xdna_mailbox_chann_res *i2x,
+ u32 iohub_int_addr,
+ int mb_irq)
+{
+ struct mailbox_channel *mb_chann;
+ int ret;
+
+ if (!is_power_of_2(x2i->rb_size) || !is_power_of_2(i2x->rb_size)) {
+ pr_err("Ring buf size must be power of 2");
+ return NULL;
+ }
+
+ mb_chann = kzalloc(sizeof(*mb_chann), GFP_KERNEL);
+ if (!mb_chann)
+ return NULL;
+
+ mb_chann->mb = mb;
+ mb_chann->msix_irq = mb_irq;
+ mb_chann->iohub_int_addr = iohub_int_addr;
+ memcpy(&mb_chann->res[CHAN_RES_X2I], x2i, sizeof(*x2i));
+ memcpy(&mb_chann->res[CHAN_RES_I2X], i2x, sizeof(*i2x));
+
+ spin_lock_init(&mb_chann->chan_idr_lock);
+ idr_init(&mb_chann->chan_idr);
+ mb_chann->x2i_tail = mailbox_get_tailptr(mb_chann, CHAN_RES_X2I);
+ mb_chann->i2x_head = mailbox_get_headptr(mb_chann, CHAN_RES_I2X);
+
+ INIT_WORK(&mb_chann->rx_work, mailbox_rx_worker);
+ mb_chann->work_q = create_singlethread_workqueue(MAILBOX_NAME);
+ if (!mb_chann->work_q) {
+ MB_ERR(mb_chann, "Create workqueue failed");
+ goto free_and_out;
+ }
+
+ /* Everything look good. Time to enable irq handler */
+ ret = request_irq(mb_irq, mailbox_irq_handler, 0, MAILBOX_NAME, mb_chann);
+ if (ret) {
+ MB_ERR(mb_chann, "Failed to request irq %d ret %d", mb_irq, ret);
+ goto destroy_wq;
+ }
+
+ mb_chann->bad_state = false;
+
+ MB_DBG(mb_chann, "Mailbox channel created (irq: %d)", mb_chann->msix_irq);
+ return mb_chann;
+
+destroy_wq:
+ destroy_workqueue(mb_chann->work_q);
+free_and_out:
+ kfree(mb_chann);
+ return NULL;
+}
+
+int xdna_mailbox_destroy_channel(struct mailbox_channel *mb_chann)
+{
+ if (!mb_chann)
+ return 0;
+
+ MB_DBG(mb_chann, "IRQ disabled and RX work cancelled");
+ free_irq(mb_chann->msix_irq, mb_chann);
+ destroy_workqueue(mb_chann->work_q);
+ /* We can clean up and release resources */
+
+ idr_for_each(&mb_chann->chan_idr, mailbox_release_msg, mb_chann);
+ idr_destroy(&mb_chann->chan_idr);
+
+ MB_DBG(mb_chann, "Mailbox channel destroyed, irq: %d", mb_chann->msix_irq);
+ kfree(mb_chann);
+ return 0;
+}
+
+void xdna_mailbox_stop_channel(struct mailbox_channel *mb_chann)
+{
+ if (!mb_chann)
+ return;
+
+ /* Disable an irq and wait. This might sleep. */
+ disable_irq(mb_chann->msix_irq);
+
+ /* Cancel RX work and wait for it to finish */
+ cancel_work_sync(&mb_chann->rx_work);
+ MB_DBG(mb_chann, "IRQ disabled and RX work cancelled");
+}
+
+struct mailbox *xdnam_mailbox_create(struct drm_device *ddev,
+ const struct xdna_mailbox_res *res)
+{
+ struct mailbox *mb;
+
+ mb = drmm_kzalloc(ddev, sizeof(*mb), GFP_KERNEL);
+ if (!mb)
+ return NULL;
+ mb->dev = ddev->dev;
+
+ /* mailbox and ring buf base and size information */
+ memcpy(&mb->res, res, sizeof(*res));
+
+ return mb;
+}
new file mode 100644
@@ -0,0 +1,124 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2022-2024, Advanced Micro Devices, Inc.
+ */
+
+#ifndef _AIE2_MAILBOX_H_
+#define _AIE2_MAILBOX_H_
+
+struct mailbox;
+struct mailbox_channel;
+
+/*
+ * xdna_mailbox_msg - message struct
+ *
+ * @opcode: opcode for firmware
+ * @handle: handle used for the notify callback
+ * @notify_cb: callback function to notify the sender when there is response
+ * @send_data: pointing to sending data
+ * @send_size: size of the sending data
+ *
+ * The mailbox will split the sending data in to multiple firmware message if
+ * the size of the data is too big. This is transparent to the sender. The
+ * sender will receive one notification.
+ */
+struct xdna_mailbox_msg {
+ u32 opcode;
+ void *handle;
+ int (*notify_cb)(void *handle, const u32 *data, size_t size);
+ u8 *send_data;
+ size_t send_size;
+};
+
+/*
+ * xdna_mailbox_res - mailbox hardware resource
+ *
+ * @ringbuf_base: ring buffer base address
+ * @ringbuf_size: ring buffer size
+ * @mbox_base: mailbox base address
+ * @mbox_size: mailbox size
+ */
+struct xdna_mailbox_res {
+ u64 ringbuf_base;
+ size_t ringbuf_size;
+ u64 mbox_base;
+ size_t mbox_size;
+ const char *name;
+};
+
+/*
+ * xdna_mailbox_chann_res - resources
+ *
+ * @rb_start_addr: ring buffer start address
+ * @rb_size: ring buffer size
+ * @mb_head_ptr_reg: mailbox head pointer register
+ * @mb_tail_ptr_reg: mailbox tail pointer register
+ */
+struct xdna_mailbox_chann_res {
+ u32 rb_start_addr;
+ u32 rb_size;
+ u32 mb_head_ptr_reg;
+ u32 mb_tail_ptr_reg;
+};
+
+/*
+ * xdna_mailbox_create() -- create mailbox subsystem and initialize
+ *
+ * @ddev: device pointer
+ * @res: SRAM and mailbox resources
+ *
+ * Return: If success, return a handle of mailbox subsystem.
+ * Otherwise, return NULL pointer.
+ */
+struct mailbox *xdnam_mailbox_create(struct drm_device *ddev,
+ const struct xdna_mailbox_res *res);
+
+/*
+ * xdna_mailbox_create_channel() -- Create a mailbox channel instance
+ *
+ * @mailbox: the handle return from xdna_mailbox_create()
+ * @x2i: host to firmware mailbox resources
+ * @i2x: firmware to host mailbox resources
+ * @xdna_mailbox_intr_reg: register addr of MSI-X interrupt
+ * @mb_irq: Linux IRQ number associated with mailbox MSI-X interrupt vector index
+ *
+ * Return: If success, return a handle of mailbox channel. Otherwise, return NULL.
+ */
+struct mailbox_channel *
+xdna_mailbox_create_channel(struct mailbox *mailbox,
+ const struct xdna_mailbox_chann_res *x2i,
+ const struct xdna_mailbox_chann_res *i2x,
+ u32 xdna_mailbox_intr_reg,
+ int mb_irq);
+
+/*
+ * xdna_mailbox_destroy_channel() -- destroy mailbox channel
+ *
+ * @mailbox_chann: the handle return from xdna_mailbox_create_channel()
+ *
+ * Return: if success, return 0. otherwise return error code
+ */
+int xdna_mailbox_destroy_channel(struct mailbox_channel *mailbox_chann);
+
+/*
+ * xdna_mailbox_stop_channel() -- stop mailbox channel
+ *
+ * @mailbox_chann: the handle return from xdna_mailbox_create_channel()
+ *
+ * Return: if success, return 0. otherwise return error code
+ */
+void xdna_mailbox_stop_channel(struct mailbox_channel *mailbox_chann);
+
+/*
+ * xdna_mailbox_send_msg() -- Send a message
+ *
+ * @mailbox_chann: Mailbox channel handle
+ * @msg: message struct for message information
+ * @tx_timeout: the timeout value for sending the message in ms.
+ *
+ * Return: If success return 0, otherwise, return error code
+ */
+int xdna_mailbox_send_msg(struct mailbox_channel *mailbox_chann,
+ const struct xdna_mailbox_msg *msg, u64 tx_timeout);
+
+#endif /* _AIE2_MAILBOX_ */
new file mode 100644
@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2024, Advanced Micro Devices, Inc.
+ */
+
+#include <drm/drm_device.h>
+#include <drm/drm_print.h>
+#include <linux/completion.h>
+
+#include "amdxdna_mailbox.h"
+#include "amdxdna_mailbox_helper.h"
+#include "amdxdna_pci_drv.h"
+
+int xdna_msg_cb(void *handle, const u32 *data, size_t size)
+{
+ struct xdna_notify *cb_arg = handle;
+ int ret;
+
+ if (unlikely(!data))
+ goto out;
+
+ if (unlikely(cb_arg->size != size)) {
+ cb_arg->error = -EINVAL;
+ goto out;
+ }
+
+ print_hex_dump_debug("resp data: ", DUMP_PREFIX_OFFSET,
+ 16, 4, data, cb_arg->size, true);
+ memcpy(cb_arg->data, data, cb_arg->size);
+out:
+ ret = cb_arg->error;
+ complete(&cb_arg->comp);
+ return ret;
+}
+
+int xdna_send_msg_wait(struct amdxdna_dev *xdna, struct mailbox_channel *chann,
+ struct xdna_mailbox_msg *msg)
+{
+ struct xdna_notify *hdl = msg->handle;
+ int ret;
+
+ ret = xdna_mailbox_send_msg(chann, msg, TX_TIMEOUT);
+ if (ret) {
+ XDNA_ERR(xdna, "Send message failed, ret %d", ret);
+ return ret;
+ }
+
+ ret = wait_for_completion_timeout(&hdl->comp,
+ msecs_to_jiffies(RX_TIMEOUT));
+ if (!ret) {
+ XDNA_ERR(xdna, "Wait for completion timeout");
+ return -ETIME;
+ }
+
+ return hdl->error;
+}
new file mode 100644
@@ -0,0 +1,42 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2023-2024, Advanced Micro Devices, Inc.
+ */
+
+#ifndef _AMDXDNA_MAILBOX_HELPER_H
+#define _AMDXDNA_MAILBOX_HELPER_H
+
+#define TX_TIMEOUT 2000 /* milliseconds */
+#define RX_TIMEOUT 5000 /* milliseconds */
+
+struct amdxdna_dev;
+
+struct xdna_notify {
+ struct completion comp;
+ u32 *data;
+ size_t size;
+ int error;
+};
+
+#define DECLARE_XDNA_MSG_COMMON(name, op, status) \
+ struct name##_req req = { 0 }; \
+ struct name##_resp resp = { status }; \
+ struct xdna_notify hdl = { \
+ .error = 0, \
+ .data = (u32 *)&resp, \
+ .size = sizeof(resp), \
+ .comp = COMPLETION_INITIALIZER_ONSTACK(hdl.comp), \
+ }; \
+ struct xdna_mailbox_msg msg = { \
+ .send_data = (u8 *)&req, \
+ .send_size = sizeof(req), \
+ .handle = &hdl, \
+ .opcode = op, \
+ .notify_cb = xdna_msg_cb, \
+ }
+
+int xdna_msg_cb(void *handle, const u32 *data, size_t size);
+int xdna_send_msg_wait(struct amdxdna_dev *xdna, struct mailbox_channel *chann,
+ struct xdna_mailbox_msg *msg);
+
+#endif /* _AMDXDNA_MAILBOX_HELPER_H */
@@ -47,12 +47,20 @@ struct amdxdna_dev_info {
const struct amdxdna_dev_ops *ops;
};
+struct amdxdna_fw_ver {
+ u32 major;
+ u32 minor;
+ u32 sub;
+ u32 build;
+};
+
struct amdxdna_dev {
struct drm_device ddev;
struct amdxdna_dev_hdl *dev_handle;
const struct amdxdna_dev_info *dev_info;
struct mutex dev_lock; /* per device lock */
+ struct amdxdna_fw_ver fw_ver;
};
/*
@@ -24,9 +24,20 @@ static ssize_t device_type_show(struct device *dev, struct device_attribute *att
}
static DEVICE_ATTR_RO(device_type);
+static ssize_t fw_version_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct amdxdna_dev *xdna = dev_get_drvdata(dev);
+
+ return sprintf(buf, "%d.%d.%d.%d\n", xdna->fw_ver.major,
+ xdna->fw_ver.minor, xdna->fw_ver.sub,
+ xdna->fw_ver.build);
+}
+static DEVICE_ATTR_RO(fw_version);
+
static struct attribute *amdxdna_attrs[] = {
&dev_attr_device_type.attr,
&dev_attr_vbnv.attr,
+ &dev_attr_fw_version.attr,
NULL,
};
@@ -8,6 +8,7 @@
#include <linux/sizes.h>
#include "aie2_pci.h"
+#include "amdxdna_mailbox.h"
#include "amdxdna_pci_drv.h"
/* Address definition from NPU1 docs */
@@ -8,6 +8,7 @@
#include <linux/sizes.h>
#include "aie2_pci.h"
+#include "amdxdna_mailbox.h"
#include "amdxdna_pci_drv.h"
/* NPU Public Registers on MpNPUAxiXbar (refer to Diag npu_registers.h) */
@@ -8,6 +8,7 @@
#include <linux/sizes.h>
#include "aie2_pci.h"
+#include "amdxdna_mailbox.h"
#include "amdxdna_pci_drv.h"
/* NPU Public Registers on MpNPUAxiXbar (refer to Diag npu_registers.h) */
@@ -8,6 +8,7 @@
#include <linux/sizes.h>
#include "aie2_pci.h"
+#include "amdxdna_mailbox.h"
#include "amdxdna_pci_drv.h"
/* NPU Public Registers on MpNPUAxiXbar (refer to Diag npu_registers.h) */
new file mode 100644
@@ -0,0 +1,60 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2023-2024, Advanced Micro Devices, Inc.
+ */
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM amdxdna
+
+#if !defined(_TRACE_AMDXDNA_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_AMDXDNA_H
+
+#include <linux/tracepoint.h>
+
+DECLARE_EVENT_CLASS(xdna_mbox_msg,
+ TP_PROTO(char *name, u8 chann_id, u32 opcode, u32 msg_id),
+
+ TP_ARGS(name, chann_id, opcode, msg_id),
+
+ TP_STRUCT__entry(__string(name, name)
+ __field(u32, chann_id)
+ __field(u32, opcode)
+ __field(u32, msg_id)),
+
+ TP_fast_assign(__assign_str(name);
+ __entry->chann_id = chann_id;
+ __entry->opcode = opcode;
+ __entry->msg_id = msg_id;),
+
+ TP_printk("%s.%d id 0x%x opcode 0x%x", __get_str(name),
+ __entry->chann_id, __entry->msg_id, __entry->opcode)
+);
+
+DEFINE_EVENT(xdna_mbox_msg, mbox_set_tail,
+ TP_PROTO(char *name, u8 chann_id, u32 opcode, u32 id),
+ TP_ARGS(name, chann_id, opcode, id)
+);
+
+DEFINE_EVENT(xdna_mbox_msg, mbox_set_head,
+ TP_PROTO(char *name, u8 chann_id, u32 opcode, u32 id),
+ TP_ARGS(name, chann_id, opcode, id)
+);
+
+TRACE_EVENT(mbox_irq_handle,
+ TP_PROTO(char *name, int irq),
+
+ TP_ARGS(name, irq),
+
+ TP_STRUCT__entry(__string(name, name)
+ __field(int, irq)),
+
+ TP_fast_assign(__assign_str(name);
+ __entry->irq = irq;),
+
+ TP_printk("%s.%d", __get_str(name), __entry->irq)
+);
+
+#endif /* !defined(_TRACE_AMDXDNA_H) || defined(TRACE_HEADER_MULTI_READ) */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>