--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-only
+/* Huawei HiNIC PCI Express Linux driver
+ * Copyright(c) 2017 Huawei Technologies Co., Ltd
+ */
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/types.h>
+#include <linux/completion.h>
+#include <linux/semaphore.h>
+#include <linux/spinlock.h>
+#include <linux/workqueue.h>
+
+#include "hinic_hw_if.h"
+#include "hinic_hw_mgmt.h"
+#include "hinic_hw_csr.h"
+#include "hinic_hw_dev.h"
+#include "hinic_hw_mbox.h"
+
+#define HINIC_MBOX_INT_DST_FUNC_SHIFT 0
+#define HINIC_MBOX_INT_DST_AEQN_SHIFT 10
+#define HINIC_MBOX_INT_SRC_RESP_AEQN_SHIFT 12
+#define HINIC_MBOX_INT_STAT_DMA_SHIFT 14
+/* The size of data to be sended (unit of 4 bytes) */
+#define HINIC_MBOX_INT_TX_SIZE_SHIFT 20
+/* SO_RO(strong order, relax order) */
+#define HINIC_MBOX_INT_STAT_DMA_SO_RO_SHIFT 25
+#define HINIC_MBOX_INT_WB_EN_SHIFT 28
+
+#define HINIC_MBOX_INT_DST_FUNC_MASK 0x3FF
+#define HINIC_MBOX_INT_DST_AEQN_MASK 0x3
+#define HINIC_MBOX_INT_SRC_RESP_AEQN_MASK 0x3
+#define HINIC_MBOX_INT_STAT_DMA_MASK 0x3F
+#define HINIC_MBOX_INT_TX_SIZE_MASK 0x1F
+#define HINIC_MBOX_INT_STAT_DMA_SO_RO_MASK 0x3
+#define HINIC_MBOX_INT_WB_EN_MASK 0x1
+
+#define HINIC_MBOX_INT_SET(val, field) \
+ (((val) & HINIC_MBOX_INT_##field##_MASK) << \
+ HINIC_MBOX_INT_##field##_SHIFT)
+
+enum hinic_mbox_tx_status {
+ TX_NOT_DONE = 1,
+};
+
+#define HINIC_MBOX_CTRL_TRIGGER_AEQE_SHIFT 0
+
+/* specifies the issue request for the message data.
+ * 0 - Tx request is done;
+ * 1 - Tx request is in process.
+ */
+#define HINIC_MBOX_CTRL_TX_STATUS_SHIFT 1
+
+#define HINIC_MBOX_CTRL_TRIGGER_AEQE_MASK 0x1
+#define HINIC_MBOX_CTRL_TX_STATUS_MASK 0x1
+
+#define HINIC_MBOX_CTRL_SET(val, field) \
+ (((val) & HINIC_MBOX_CTRL_##field##_MASK) << \
+ HINIC_MBOX_CTRL_##field##_SHIFT)
+
+#define HINIC_MBOX_HEADER_MSG_LEN_SHIFT 0
+#define HINIC_MBOX_HEADER_MODULE_SHIFT 11
+#define HINIC_MBOX_HEADER_SEG_LEN_SHIFT 16
+#define HINIC_MBOX_HEADER_NO_ACK_SHIFT 22
+#define HINIC_MBOX_HEADER_SEQID_SHIFT 24
+#define HINIC_MBOX_HEADER_LAST_SHIFT 30
+
+/* specifies the mailbox message direction
+ * 0 - send
+ * 1 - receive
+ */
+#define HINIC_MBOX_HEADER_DIRECTION_SHIFT 31
+#define HINIC_MBOX_HEADER_CMD_SHIFT 32
+#define HINIC_MBOX_HEADER_MSG_ID_SHIFT 40
+#define HINIC_MBOX_HEADER_STATUS_SHIFT 48
+#define HINIC_MBOX_HEADER_SRC_GLB_FUNC_IDX_SHIFT 54
+
+#define HINIC_MBOX_HEADER_MSG_LEN_MASK 0x7FF
+#define HINIC_MBOX_HEADER_MODULE_MASK 0x1F
+#define HINIC_MBOX_HEADER_SEG_LEN_MASK 0x3F
+#define HINIC_MBOX_HEADER_NO_ACK_MASK 0x1
+#define HINIC_MBOX_HEADER_SEQID_MASK 0x3F
+#define HINIC_MBOX_HEADER_LAST_MASK 0x1
+#define HINIC_MBOX_HEADER_DIRECTION_MASK 0x1
+#define HINIC_MBOX_HEADER_CMD_MASK 0xFF
+#define HINIC_MBOX_HEADER_MSG_ID_MASK 0xFF
+#define HINIC_MBOX_HEADER_STATUS_MASK 0x3F
+#define HINIC_MBOX_HEADER_SRC_GLB_FUNC_IDX_MASK 0x3FF
+
+#define HINIC_MBOX_HEADER_GET(val, field) \
+ (((val) >> HINIC_MBOX_HEADER_##field##_SHIFT) & \
+ HINIC_MBOX_HEADER_##field##_MASK)
+#define HINIC_MBOX_HEADER_SET(val, field) \
+ ((u64)((val) & HINIC_MBOX_HEADER_##field##_MASK) << \
+ HINIC_MBOX_HEADER_##field##_SHIFT)
+
+#define MBOX_SEGLEN_MASK \
+ HINIC_MBOX_HEADER_SET(HINIC_MBOX_HEADER_SEG_LEN_MASK, SEG_LEN)
+
+#define HINIC_MBOX_SEG_LEN 48
+#define HINIC_MBOX_COMP_TIME 8000U
+#define MBOX_MSG_POLLING_TIMEOUT 8000
+
+#define HINIC_MBOX_DATA_SIZE 2040
+
+#define MBOX_MAX_BUF_SZ 2048UL
+#define MBOX_HEADER_SZ 8
+
+#define MBOX_INFO_SZ 4
+
+/* MBOX size is 64B, 8B for mbox_header, 4B reserved */
+#define MBOX_SEG_LEN 48
+#define MBOX_SEG_LEN_ALIGN 4
+#define MBOX_WB_STATUS_LEN 16UL
+
+/* mbox write back status is 16B, only first 4B is used */
+#define MBOX_WB_STATUS_ERRCODE_MASK 0xFFFF
+#define MBOX_WB_STATUS_MASK 0xFF
+#define MBOX_WB_ERROR_CODE_MASK 0xFF00
+#define MBOX_WB_STATUS_FINISHED_SUCCESS 0xFF
+#define MBOX_WB_STATUS_FINISHED_WITH_ERR 0xFE
+#define MBOX_WB_STATUS_NOT_FINISHED 0x00
+
+#define MBOX_STATUS_FINISHED(wb) \
+ (((wb) & MBOX_WB_STATUS_MASK) != MBOX_WB_STATUS_NOT_FINISHED)
+#define MBOX_STATUS_SUCCESS(wb) \
+ (((wb) & MBOX_WB_STATUS_MASK) == MBOX_WB_STATUS_FINISHED_SUCCESS)
+#define MBOX_STATUS_ERRCODE(wb) \
+ ((wb) & MBOX_WB_ERROR_CODE_MASK)
+
+#define SEQ_ID_START_VAL 0
+#define SEQ_ID_MAX_VAL 42
+
+#define DST_AEQ_IDX_DEFAULT_VAL 0
+#define SRC_AEQ_IDX_DEFAULT_VAL 0
+#define NO_DMA_ATTRIBUTE_VAL 0
+
+#define HINIC_MGMT_RSP_AEQN 0
+#define HINIC_MBOX_RSP_AEQN 2
+#define HINIC_MBOX_RECV_AEQN 0
+
+#define MBOX_MSG_NO_DATA_LEN 1
+
+#define MBOX_BODY_FROM_HDR(header) ((u8 *)(header) + MBOX_HEADER_SZ)
+#define MBOX_AREA(hwif) \
+ ((hwif)->cfg_regs_bar + HINIC_FUNC_CSR_MAILBOX_DATA_OFF)
+
+#define IS_PF_OR_PPF_SRC(src_func_idx) ((src_func_idx) < HINIC_MAX_PF_FUNCS)
+
+#define MBOX_RESPONSE_ERROR 0x1
+#define MBOX_MSG_ID_MASK 0xFF
+#define MBOX_MSG_ID(func_to_func) ((func_to_func)->send_msg_id)
+#define MBOX_MSG_ID_INC(func_to_func_mbox) (MBOX_MSG_ID(func_to_func_mbox) = \
+ (MBOX_MSG_ID(func_to_func_mbox) + 1) & MBOX_MSG_ID_MASK)
+
+#define FUNC_ID_OFF_SET_8B 8
+#define FUNC_ID_OFF_SET_10B 10
+
+/* max message counter wait to process for one function */
+#define HINIC_MAX_MSG_CNT_TO_PROCESS 10
+
+#define HINIC_QUEUE_MIN_DEPTH 6
+#define HINIC_QUEUE_MAX_DEPTH 12
+#define HINIC_MAX_RX_BUFFER_SIZE 15
+
+enum hinic_hwif_direction_type {
+ HINIC_HWIF_DIRECT_SEND = 0,
+ HINIC_HWIF_RESPONSE = 1,
+};
+
+enum mbox_send_mod {
+ MBOX_SEND_MSG_INT,
+};
+
+enum mbox_seg_type {
+ NOT_LAST_SEG,
+ LAST_SEG,
+};
+
+enum mbox_ordering_type {
+ STRONG_ORDER,
+};
+
+enum mbox_write_back_type {
+ WRITE_BACK = 1,
+};
+
+enum mbox_aeq_trig_type {
+ NOT_TRIGGER,
+ TRIGGER,
+};
+
+/**
+ * hinic_register_pf_mbox_cb - register mbox callback for pf
+ * @hwdev: the pointer to hw device
+ * @mod: specific mod that the callback will handle
+ * @callback: callback function
+ * Return: 0 - success, negative - failure
+ */
+int hinic_register_pf_mbox_cb(struct hinic_hwdev *hwdev,
+ enum hinic_mod_type mod,
+ hinic_pf_mbox_cb callback)
+{
+ struct hinic_mbox_func_to_func *func_to_func = hwdev->func_to_func;
+
+ if (mod >= HINIC_MOD_MAX)
+ return -EFAULT;
+
+ func_to_func->pf_mbox_cb[mod] = callback;
+
+ set_bit(HINIC_PF_MBOX_CB_REG, &func_to_func->pf_mbox_cb_state[mod]);
+
+ return 0;
+}
+
+/**
+ * hinic_register_vf_mbox_cb - register mbox callback for vf
+ * @hwdev: the pointer to hw device
+ * @mod: specific mod that the callback will handle
+ * @callback: callback function
+ * Return: 0 - success, negative - failure
+ */
+int hinic_register_vf_mbox_cb(struct hinic_hwdev *hwdev,
+ enum hinic_mod_type mod,
+ hinic_vf_mbox_cb callback)
+{
+ struct hinic_mbox_func_to_func *func_to_func = hwdev->func_to_func;
+
+ if (mod >= HINIC_MOD_MAX)
+ return -EFAULT;
+
+ func_to_func->vf_mbox_cb[mod] = callback;
+
+ set_bit(HINIC_VF_MBOX_CB_REG, &func_to_func->vf_mbox_cb_state[mod]);
+
+ return 0;
+}
+
+/**
+ * hinic_unregister_pf_mbox_cb - unregister the mbox callback for pf
+ * @hwdev: the pointer to hw device
+ * @mod: specific mod that the callback will handle
+ */
+void hinic_unregister_pf_mbox_cb(struct hinic_hwdev *hwdev,
+ enum hinic_mod_type mod)
+{
+ struct hinic_mbox_func_to_func *func_to_func = hwdev->func_to_func;
+
+ clear_bit(HINIC_PF_MBOX_CB_REG, &func_to_func->pf_mbox_cb_state[mod]);
+
+ while (test_bit(HINIC_PF_MBOX_CB_RUNNING,
+ &func_to_func->pf_mbox_cb_state[mod]))
+ usleep_range(900, 1000);
+
+ func_to_func->pf_mbox_cb[mod] = NULL;
+}
+
+/**
+ * hinic_unregister_vf_mbox_cb - unregister the mbox callback for vf
+ * @hwdev: the pointer to hw device
+ * @mod: specific mod that the callback will handle
+ */
+void hinic_unregister_vf_mbox_cb(struct hinic_hwdev *hwdev,
+ enum hinic_mod_type mod)
+{
+ struct hinic_mbox_func_to_func *func_to_func = hwdev->func_to_func;
+
+ clear_bit(HINIC_VF_MBOX_CB_REG, &func_to_func->vf_mbox_cb_state[mod]);
+
+ while (test_bit(HINIC_VF_MBOX_CB_RUNNING,
+ &func_to_func->vf_mbox_cb_state[mod]))
+ usleep_range(900, 1000);
+
+ func_to_func->vf_mbox_cb[mod] = NULL;
+}
+
+static int recv_vf_mbox_handler(struct hinic_mbox_func_to_func *func_to_func,
+ struct hinic_recv_mbox *recv_mbox,
+ void *buf_out, u16 *out_size)
+{
+ hinic_vf_mbox_cb cb;
+ int ret = 0;
+
+ if (recv_mbox->mod >= HINIC_MOD_MAX) {
+ dev_err(&func_to_func->hwif->pdev->dev, "Receive illegal mbox message, mod = %d\n",
+ recv_mbox->mod);
+ return -EINVAL;
+ }
+
+ set_bit(HINIC_VF_MBOX_CB_RUNNING,
+ &func_to_func->vf_mbox_cb_state[recv_mbox->mod]);
+
+ cb = func_to_func->vf_mbox_cb[recv_mbox->mod];
+ if (cb && test_bit(HINIC_VF_MBOX_CB_REG,
+ &func_to_func->vf_mbox_cb_state[recv_mbox->mod])) {
+ cb(func_to_func->hwdev, recv_mbox->cmd, recv_mbox->mbox,
+ recv_mbox->mbox_len, buf_out, out_size);
+ } else {
+ dev_err(&func_to_func->hwif->pdev->dev, "VF mbox cb is not registered\n");
+ ret = -EINVAL;
+ }
+
+ clear_bit(HINIC_VF_MBOX_CB_RUNNING,
+ &func_to_func->vf_mbox_cb_state[recv_mbox->mod]);
+
+ return ret;
+}
+
+static int
+recv_pf_from_vf_mbox_handler(struct hinic_mbox_func_to_func *func_to_func,
+ struct hinic_recv_mbox *recv_mbox,
+ u16 src_func_idx, void *buf_out,
+ u16 *out_size)
+{
+ hinic_pf_mbox_cb cb;
+ u16 vf_id = 0;
+ int ret;
+
+ if (recv_mbox->mod >= HINIC_MOD_MAX) {
+ dev_err(&func_to_func->hwif->pdev->dev, "Receive illegal mbox message, mod = %d\n",
+ recv_mbox->mod);
+ return -EINVAL;
+ }
+
+ set_bit(HINIC_PF_MBOX_CB_RUNNING,
+ &func_to_func->pf_mbox_cb_state[recv_mbox->mod]);
+
+ cb = func_to_func->pf_mbox_cb[recv_mbox->mod];
+ if (cb && test_bit(HINIC_PF_MBOX_CB_REG,
+ &func_to_func->pf_mbox_cb_state[recv_mbox->mod])) {
+ vf_id = src_func_idx -
+ hinic_glb_pf_vf_offset(func_to_func->hwif);
+ ret = cb(func_to_func->hwdev, vf_id, recv_mbox->cmd,
+ recv_mbox->mbox, recv_mbox->mbox_len,
+ buf_out, out_size);
+ } else {
+ dev_err(&func_to_func->hwif->pdev->dev, "PF mbox mod(0x%x) cb is not registered\n",
+ recv_mbox->mod);
+ ret = -EINVAL;
+ }
+
+ clear_bit(HINIC_PF_MBOX_CB_RUNNING,
+ &func_to_func->pf_mbox_cb_state[recv_mbox->mod]);
+
+ return ret;
+}
+
+static bool check_mbox_seq_id_and_seg_len(struct hinic_recv_mbox *recv_mbox,
+ u8 seq_id, u8 seg_len)
+{
+ if (seq_id > SEQ_ID_MAX_VAL || seg_len > MBOX_SEG_LEN)
+ return false;
+
+ if (seq_id == 0) {
+ recv_mbox->seq_id = seq_id;
+ } else {
+ if (seq_id != recv_mbox->seq_id + 1)
+ return false;
+
+ recv_mbox->seq_id = seq_id;
+ }
+
+ return true;
+}
+
+static void resp_mbox_handler(struct hinic_mbox_func_to_func *func_to_func,
+ struct hinic_recv_mbox *recv_mbox)
+{
+ spin_lock(&func_to_func->mbox_lock);
+ if (recv_mbox->msg_info.msg_id == func_to_func->send_msg_id &&
+ func_to_func->event_flag == EVENT_START)
+ complete(&recv_mbox->recv_done);
+ else
+ dev_err(&func_to_func->hwif->pdev->dev,
+ "Mbox response timeout, current send msg id(0x%x), recv msg id(0x%x), status(0x%x)\n",
+ func_to_func->send_msg_id, recv_mbox->msg_info.msg_id,
+ recv_mbox->msg_info.status);
+ spin_unlock(&func_to_func->mbox_lock);
+}
+
+static void recv_func_mbox_handler(struct hinic_mbox_func_to_func *func_to_func,
+ struct hinic_recv_mbox *recv_mbox,
+ u16 src_func_idx);
+
+static void recv_func_mbox_work_handler(struct work_struct *work)
+{
+ struct hinic_mbox_work *mbox_work =
+ container_of(work, struct hinic_mbox_work, work);
+ struct hinic_recv_mbox *recv_mbox;
+
+ recv_func_mbox_handler(mbox_work->func_to_func, mbox_work->recv_mbox,
+ mbox_work->src_func_idx);
+
+ recv_mbox =
+ &mbox_work->func_to_func->mbox_send[mbox_work->src_func_idx];
+
+ atomic_dec(&recv_mbox->msg_cnt);
+
+ kfree(mbox_work);
+}
+
+static void recv_mbox_handler(struct hinic_mbox_func_to_func *func_to_func,
+ void *header, struct hinic_recv_mbox *recv_mbox)
+{
+ void *mbox_body = MBOX_BODY_FROM_HDR(header);
+ struct hinic_recv_mbox *rcv_mbox_temp = NULL;
+ u64 mbox_header = *((u64 *)header);
+ struct hinic_mbox_work *mbox_work;
+ u8 seq_id, seg_len;
+ u16 src_func_idx;
+ int pos;
+
+ seq_id = HINIC_MBOX_HEADER_GET(mbox_header, SEQID);
+ seg_len = HINIC_MBOX_HEADER_GET(mbox_header, SEG_LEN);
+ src_func_idx = HINIC_MBOX_HEADER_GET(mbox_header, SRC_GLB_FUNC_IDX);
+
+ if (!check_mbox_seq_id_and_seg_len(recv_mbox, seq_id, seg_len)) {
+ dev_err(&func_to_func->hwif->pdev->dev,
+ "Mailbox sequence and segment check fail, src func id: 0x%x, front id: 0x%x, current id: 0x%x, seg len: 0x%x\n",
+ src_func_idx, recv_mbox->seq_id, seq_id, seg_len);
+ recv_mbox->seq_id = SEQ_ID_MAX_VAL;
+ return;
+ }
+
+ pos = seq_id * MBOX_SEG_LEN;
+ memcpy((u8 *)recv_mbox->mbox + pos, mbox_body,
+ HINIC_MBOX_HEADER_GET(mbox_header, SEG_LEN));
+
+ if (!HINIC_MBOX_HEADER_GET(mbox_header, LAST))
+ return;
+
+ recv_mbox->cmd = HINIC_MBOX_HEADER_GET(mbox_header, CMD);
+ recv_mbox->mod = HINIC_MBOX_HEADER_GET(mbox_header, MODULE);
+ recv_mbox->mbox_len = HINIC_MBOX_HEADER_GET(mbox_header, MSG_LEN);
+ recv_mbox->ack_type = HINIC_MBOX_HEADER_GET(mbox_header, NO_ACK);
+ recv_mbox->msg_info.msg_id = HINIC_MBOX_HEADER_GET(mbox_header, MSG_ID);
+ recv_mbox->msg_info.status = HINIC_MBOX_HEADER_GET(mbox_header, STATUS);
+ recv_mbox->seq_id = SEQ_ID_MAX_VAL;
+
+ if (HINIC_MBOX_HEADER_GET(mbox_header, DIRECTION) ==
+ HINIC_HWIF_RESPONSE) {
+ resp_mbox_handler(func_to_func, recv_mbox);
+ return;
+ }
+
+ if (atomic_read(&recv_mbox->msg_cnt) > HINIC_MAX_MSG_CNT_TO_PROCESS) {
+ dev_warn(&func_to_func->hwif->pdev->dev,
+ "This function(%u) have %d message wait to process,can't add to work queue\n",
+ src_func_idx, atomic_read(&recv_mbox->msg_cnt));
+ return;
+ }
+
+ rcv_mbox_temp = kzalloc(sizeof(*rcv_mbox_temp), GFP_KERNEL);
+ if (!rcv_mbox_temp)
+ return;
+
+ memcpy(rcv_mbox_temp, recv_mbox, sizeof(*rcv_mbox_temp));
+
+ rcv_mbox_temp->mbox = kzalloc(MBOX_MAX_BUF_SZ, GFP_KERNEL);
+ if (!rcv_mbox_temp->mbox)
+ goto err_alloc_rcv_mbox_msg;
+
+ memcpy(rcv_mbox_temp->mbox, recv_mbox->mbox, MBOX_MAX_BUF_SZ);
+
+ rcv_mbox_temp->buf_out = kzalloc(MBOX_MAX_BUF_SZ, GFP_KERNEL);
+ if (!rcv_mbox_temp->buf_out)
+ goto err_alloc_rcv_mbox_buf;
+
+ mbox_work = kzalloc(sizeof(*mbox_work), GFP_KERNEL);
+ if (!mbox_work)
+ goto err_alloc_mbox_work;
+
+ mbox_work->func_to_func = func_to_func;
+ mbox_work->recv_mbox = rcv_mbox_temp;
+ mbox_work->src_func_idx = src_func_idx;
+
+ atomic_inc(&recv_mbox->msg_cnt);
+ INIT_WORK(&mbox_work->work, recv_func_mbox_work_handler);
+ queue_work(func_to_func->workq, &mbox_work->work);
+
+ return;
+
+err_alloc_mbox_work:
+ kfree(rcv_mbox_temp->buf_out);
+
+err_alloc_rcv_mbox_buf:
+ kfree(rcv_mbox_temp->mbox);
+
+err_alloc_rcv_mbox_msg:
+ kfree(rcv_mbox_temp);
+}
+
+void hinic_mbox_func_aeqe_handler(void *handle, void *header, u8 size)
+{
+ struct hinic_mbox_func_to_func *func_to_func;
+ u64 mbox_header = *((u64 *)header);
+ struct hinic_recv_mbox *recv_mbox;
+ u64 src, dir;
+
+ func_to_func = ((struct hinic_hwdev *)handle)->func_to_func;
+
+ dir = HINIC_MBOX_HEADER_GET(mbox_header, DIRECTION);
+ src = HINIC_MBOX_HEADER_GET(mbox_header, SRC_GLB_FUNC_IDX);
+
+ if (src >= HINIC_MAX_FUNCTIONS) {
+ dev_err(&func_to_func->hwif->pdev->dev,
+ "Mailbox source function id:%u is invalid\n", (u32)src);
+ return;
+ }
+
+ recv_mbox = (dir == HINIC_HWIF_DIRECT_SEND) ?
+ &func_to_func->mbox_send[src] :
+ &func_to_func->mbox_resp[src];
+
+ recv_mbox_handler(func_to_func, (u64 *)header, recv_mbox);
+}
+
+void hinic_mbox_self_aeqe_handler(void *handle, void *header, u8 size)
+{
+ struct hinic_mbox_func_to_func *func_to_func;
+ struct hinic_send_mbox *send_mbox;
+
+ func_to_func = ((struct hinic_hwdev *)handle)->func_to_func;
+ send_mbox = &func_to_func->send_mbox;
+
+ complete(&send_mbox->send_done);
+}
+
+static void clear_mbox_status(struct hinic_send_mbox *mbox)
+{
+ *mbox->wb_status = 0;
+
+ /* clear mailbox write back status */
+ wmb();
+}
+
+static void mbox_copy_header(struct hinic_hwdev *hwdev,
+ struct hinic_send_mbox *mbox, u64 *header)
+{
+ u32 i, idx_max = MBOX_HEADER_SZ / sizeof(u32);
+ u32 *data = (u32 *)header;
+
+ for (i = 0; i < idx_max; i++)
+ __raw_writel(*(data + i), mbox->data + i * sizeof(u32));
+}
+
+static void mbox_copy_send_data(struct hinic_hwdev *hwdev,
+ struct hinic_send_mbox *mbox, void *seg,
+ u16 seg_len)
+{
+ u8 mbox_max_buf[MBOX_SEG_LEN] = {0};
+ u32 data_len, chk_sz = sizeof(u32);
+ u32 *data = seg;
+ u32 i, idx_max;
+
+ /* The mbox message should be aligned in 4 bytes. */
+ if (seg_len % chk_sz) {
+ memcpy(mbox_max_buf, seg, seg_len);
+ data = (u32 *)mbox_max_buf;
+ }
+
+ data_len = seg_len;
+ idx_max = ALIGN(data_len, chk_sz) / chk_sz;
+
+ for (i = 0; i < idx_max; i++)
+ __raw_writel(*(data + i),
+ mbox->data + MBOX_HEADER_SZ + i * sizeof(u32));
+}
+
+static void write_mbox_msg_attr(struct hinic_mbox_func_to_func *func_to_func,
+ u16 dst_func, u16 dst_aeqn, u16 seg_len,
+ int poll)
+{
+ u16 rsp_aeq = (dst_aeqn == 0) ? 0 : HINIC_MBOX_RSP_AEQN;
+ u32 mbox_int, mbox_ctrl;
+
+ mbox_int = HINIC_MBOX_INT_SET(dst_func, DST_FUNC) |
+ HINIC_MBOX_INT_SET(dst_aeqn, DST_AEQN) |
+ HINIC_MBOX_INT_SET(rsp_aeq, SRC_RESP_AEQN) |
+ HINIC_MBOX_INT_SET(NO_DMA_ATTRIBUTE_VAL, STAT_DMA) |
+ HINIC_MBOX_INT_SET(ALIGN(MBOX_SEG_LEN + MBOX_HEADER_SZ +
+ MBOX_INFO_SZ, MBOX_SEG_LEN_ALIGN) >> 2,
+ TX_SIZE) |
+ HINIC_MBOX_INT_SET(STRONG_ORDER, STAT_DMA_SO_RO) |
+ HINIC_MBOX_INT_SET(WRITE_BACK, WB_EN);
+
+ hinic_hwif_write_reg(func_to_func->hwif,
+ HINIC_FUNC_CSR_MAILBOX_INT_OFFSET_OFF, mbox_int);
+
+ wmb(); /* writing the mbox int attributes */
+ mbox_ctrl = HINIC_MBOX_CTRL_SET(TX_NOT_DONE, TX_STATUS);
+
+ if (poll)
+ mbox_ctrl |= HINIC_MBOX_CTRL_SET(NOT_TRIGGER, TRIGGER_AEQE);
+ else
+ mbox_ctrl |= HINIC_MBOX_CTRL_SET(TRIGGER, TRIGGER_AEQE);
+
+ hinic_hwif_write_reg(func_to_func->hwif,
+ HINIC_FUNC_CSR_MAILBOX_CONTROL_OFF, mbox_ctrl);
+}
+
+void dump_mox_reg(struct hinic_hwdev *hwdev)
+{
+ u32 val;
+
+ val = hinic_hwif_read_reg(hwdev->hwif,
+ HINIC_FUNC_CSR_MAILBOX_CONTROL_OFF);
+ dev_err(&hwdev->hwif->pdev->dev, "Mailbox control reg: 0x%x\n", val);
+
+ val = hinic_hwif_read_reg(hwdev->hwif,
+ HINIC_FUNC_CSR_MAILBOX_INT_OFFSET_OFF);
+ dev_err(&hwdev->hwif->pdev->dev, "Mailbox interrupt offset: 0x%x\n",
+ val);
+}
+
+static u16 get_mbox_status(struct hinic_send_mbox *mbox)
+{
+ /* write back is 16B, but only use first 4B */
+ u64 wb_val = be64_to_cpu(*mbox->wb_status);
+
+ rmb(); /* verify reading before check */
+
+ return (u16)(wb_val & MBOX_WB_STATUS_ERRCODE_MASK);
+}
+
+static int
+wait_for_mbox_seg_completion(struct hinic_mbox_func_to_func *func_to_func,
+ int poll, u16 *wb_status)
+{
+ struct hinic_send_mbox *send_mbox = &func_to_func->send_mbox;
+ struct hinic_hwdev *hwdev = func_to_func->hwdev;
+ struct completion *done = &send_mbox->send_done;
+ u32 cnt = 0;
+ ulong jif;
+
+ if (poll) {
+ while (cnt < MBOX_MSG_POLLING_TIMEOUT) {
+ *wb_status = get_mbox_status(send_mbox);
+ if (MBOX_STATUS_FINISHED(*wb_status))
+ break;
+
+ usleep_range(900, 1000);
+ cnt++;
+ }
+
+ if (cnt == MBOX_MSG_POLLING_TIMEOUT) {
+ dev_err(&hwdev->hwif->pdev->dev, "Send mailbox segment timeout, wb status: 0x%x\n",
+ *wb_status);
+ dump_mox_reg(hwdev);
+ return -ETIMEDOUT;
+ }
+ } else {
+ jif = msecs_to_jiffies(HINIC_MBOX_COMP_TIME);
+ if (!wait_for_completion_timeout(done, jif)) {
+ dev_err(&hwdev->hwif->pdev->dev, "Send mailbox segment timeout\n");
+ dump_mox_reg(hwdev);
+ return -ETIMEDOUT;
+ }
+
+ *wb_status = get_mbox_status(send_mbox);
+ }
+
+ return 0;
+}
+
+static int send_mbox_seg(struct hinic_mbox_func_to_func *func_to_func,
+ u64 header, u16 dst_func, void *seg, u16 seg_len,
+ int poll, void *msg_info)
+{
+ struct hinic_send_mbox *send_mbox = &func_to_func->send_mbox;
+ u16 seq_dir = HINIC_MBOX_HEADER_GET(header, DIRECTION);
+ struct hinic_hwdev *hwdev = func_to_func->hwdev;
+ struct completion *done = &send_mbox->send_done;
+ u8 num_aeqs = hwdev->hwif->attr.num_aeqs;
+ u16 dst_aeqn, wb_status = 0, errcode;
+
+ if (num_aeqs >= 4)
+ dst_aeqn = (seq_dir == HINIC_HWIF_DIRECT_SEND) ?
+ HINIC_MBOX_RECV_AEQN : HINIC_MBOX_RSP_AEQN;
+ else
+ dst_aeqn = 0;
+
+ if (!poll)
+ init_completion(done);
+
+ clear_mbox_status(send_mbox);
+
+ mbox_copy_header(hwdev, send_mbox, &header);
+
+ mbox_copy_send_data(hwdev, send_mbox, seg, seg_len);
+
+ write_mbox_msg_attr(func_to_func, dst_func, dst_aeqn, seg_len, poll);
+
+ wmb(); /* writing the mbox msg attributes */
+
+ if (wait_for_mbox_seg_completion(func_to_func, poll, &wb_status))
+ return -ETIMEDOUT;
+
+ if (!MBOX_STATUS_SUCCESS(wb_status)) {
+ dev_err(&hwdev->hwif->pdev->dev, "Send mailbox segment to function %d error, wb status: 0x%x\n",
+ dst_func, wb_status);
+ errcode = MBOX_STATUS_ERRCODE(wb_status);
+ return errcode ? errcode : -EFAULT;
+ }
+
+ return 0;
+}
+
+static int send_mbox_to_func(struct hinic_mbox_func_to_func *func_to_func,
+ enum hinic_mod_type mod, u16 cmd, void *msg,
+ u16 msg_len, u16 dst_func,
+ enum hinic_hwif_direction_type direction,
+ enum hinic_mbox_ack_type ack_type,
+ struct mbox_msg_info *msg_info)
+{
+ struct hinic_hwdev *hwdev = func_to_func->hwdev;
+ u16 seg_len = MBOX_SEG_LEN;
+ u8 *msg_seg = (u8 *)msg;
+ u16 left = msg_len;
+ u32 seq_id = 0;
+ u64 header = 0;
+ int err = 0;
+
+ down(&func_to_func->msg_send_sem);
+
+ header = HINIC_MBOX_HEADER_SET(msg_len, MSG_LEN) |
+ HINIC_MBOX_HEADER_SET(mod, MODULE) |
+ HINIC_MBOX_HEADER_SET(seg_len, SEG_LEN) |
+ HINIC_MBOX_HEADER_SET(ack_type, NO_ACK) |
+ HINIC_MBOX_HEADER_SET(SEQ_ID_START_VAL, SEQID) |
+ HINIC_MBOX_HEADER_SET(NOT_LAST_SEG, LAST) |
+ HINIC_MBOX_HEADER_SET(direction, DIRECTION) |
+ HINIC_MBOX_HEADER_SET(cmd, CMD) |
+ /* The vf's offset to it's associated pf */
+ HINIC_MBOX_HEADER_SET(msg_info->msg_id, MSG_ID) |
+ HINIC_MBOX_HEADER_SET(msg_info->status, STATUS) |
+ HINIC_MBOX_HEADER_SET(hinic_global_func_id_hw(hwdev->hwif),
+ SRC_GLB_FUNC_IDX);
+
+ while (!(HINIC_MBOX_HEADER_GET(header, LAST))) {
+ if (left <= HINIC_MBOX_SEG_LEN) {
+ header &= ~MBOX_SEGLEN_MASK;
+ header |= HINIC_MBOX_HEADER_SET(left, SEG_LEN);
+ header |= HINIC_MBOX_HEADER_SET(LAST_SEG, LAST);
+
+ seg_len = left;
+ }
+
+ err = send_mbox_seg(func_to_func, header, dst_func, msg_seg,
+ seg_len, MBOX_SEND_MSG_INT, msg_info);
+ if (err) {
+ dev_err(&hwdev->hwif->pdev->dev, "Failed to send mbox seg, seq_id=0x%llx\n",
+ HINIC_MBOX_HEADER_GET(header, SEQID));
+ goto err_send_mbox_seg;
+ }
+
+ left -= HINIC_MBOX_SEG_LEN;
+ msg_seg += HINIC_MBOX_SEG_LEN;
+
+ seq_id++;
+ header &= ~(HINIC_MBOX_HEADER_SET(HINIC_MBOX_HEADER_SEQID_MASK,
+ SEQID));
+ header |= HINIC_MBOX_HEADER_SET(seq_id, SEQID);
+ }
+
+err_send_mbox_seg:
+ up(&func_to_func->msg_send_sem);
+
+ return err;
+}
+
+static void
+response_for_recv_func_mbox(struct hinic_mbox_func_to_func *func_to_func,
+ struct hinic_recv_mbox *recv_mbox, int err,
+ u16 out_size, u16 src_func_idx)
+{
+ struct mbox_msg_info msg_info = {0};
+
+ if (recv_mbox->ack_type == MBOX_ACK) {
+ msg_info.msg_id = recv_mbox->msg_info.msg_id;
+ if (err == HINIC_MBOX_PF_BUSY_ACTIVE_FW)
+ msg_info.status = HINIC_MBOX_PF_BUSY_ACTIVE_FW;
+ else if (err == HINIC_MBOX_VF_CMD_ERROR)
+ msg_info.status = HINIC_MBOX_VF_CMD_ERROR;
+ else if (err)
+ msg_info.status = HINIC_MBOX_PF_SEND_ERR;
+
+ /* if no data needs to response, set out_size to 1 */
+ if (!out_size || err)
+ out_size = MBOX_MSG_NO_DATA_LEN;
+
+ send_mbox_to_func(func_to_func, recv_mbox->mod, recv_mbox->cmd,
+ recv_mbox->buf_out, out_size, src_func_idx,
+ HINIC_HWIF_RESPONSE, MBOX_ACK,
+ &msg_info);
+ }
+}
+
+static void recv_func_mbox_handler(struct hinic_mbox_func_to_func *func_to_func,
+ struct hinic_recv_mbox *recv_mbox,
+ u16 src_func_idx)
+{
+ void *buf_out = recv_mbox->buf_out;
+ u16 out_size = MBOX_MAX_BUF_SZ;
+ int err = 0;
+
+ if (HINIC_IS_VF(func_to_func->hwif)) {
+ err = recv_vf_mbox_handler(func_to_func, recv_mbox, buf_out,
+ &out_size);
+ } else {
+ if (IS_PF_OR_PPF_SRC(src_func_idx))
+ dev_warn(&func_to_func->hwif->pdev->dev,
+ "Unsupported pf2pf mbox msg\n");
+ else
+ err = recv_pf_from_vf_mbox_handler(func_to_func,
+ recv_mbox,
+ src_func_idx,
+ buf_out, &out_size);
+ }
+
+ response_for_recv_func_mbox(func_to_func, recv_mbox, err, out_size,
+ src_func_idx);
+ kfree(recv_mbox->buf_out);
+ kfree(recv_mbox->mbox);
+ kfree(recv_mbox);
+}
+
+static void set_mbox_to_func_event(struct hinic_mbox_func_to_func *func_to_func,
+ enum mbox_event_state event_flag)
+{
+ spin_lock(&func_to_func->mbox_lock);
+ func_to_func->event_flag = event_flag;
+ spin_unlock(&func_to_func->mbox_lock);
+}
+
+static int mbox_resp_info_handler(struct hinic_mbox_func_to_func *func_to_func,
+ struct hinic_recv_mbox *mbox_for_resp,
+ enum hinic_mod_type mod, u16 cmd,
+ void *buf_out, u16 *out_size)
+{
+ int err;
+
+ if (mbox_for_resp->msg_info.status) {
+ err = mbox_for_resp->msg_info.status;
+ if (err != HINIC_MBOX_PF_BUSY_ACTIVE_FW)
+ dev_err(&func_to_func->hwif->pdev->dev, "Mbox response error(0x%x)\n",
+ mbox_for_resp->msg_info.status);
+ return err;
+ }
+
+ if (buf_out && out_size) {
+ if (*out_size < mbox_for_resp->mbox_len) {
+ dev_err(&func_to_func->hwif->pdev->dev,
+ "Invalid response mbox message length: %d for mod %d cmd %d, should less than: %d\n",
+ mbox_for_resp->mbox_len, mod, cmd, *out_size);
+ return -EFAULT;
+ }
+
+ if (mbox_for_resp->mbox_len)
+ memcpy(buf_out, mbox_for_resp->mbox,
+ mbox_for_resp->mbox_len);
+
+ *out_size = mbox_for_resp->mbox_len;
+ }
+
+ return 0;
+}
+
+int hinic_mbox_to_func(struct hinic_mbox_func_to_func *func_to_func,
+ enum hinic_mod_type mod, u16 cmd, u16 dst_func,
+ void *buf_in, u16 in_size, void *buf_out,
+ u16 *out_size, u32 timeout)
+{
+ struct hinic_recv_mbox *mbox_for_resp;
+ struct mbox_msg_info msg_info = {0};
+ ulong timeo;
+ int err;
+
+ mbox_for_resp = &func_to_func->mbox_resp[dst_func];
+
+ down(&func_to_func->mbox_send_sem);
+
+ init_completion(&mbox_for_resp->recv_done);
+
+ msg_info.msg_id = MBOX_MSG_ID_INC(func_to_func);
+
+ set_mbox_to_func_event(func_to_func, EVENT_START);
+
+ err = send_mbox_to_func(func_to_func, mod, cmd, buf_in, in_size,
+ dst_func, HINIC_HWIF_DIRECT_SEND, MBOX_ACK,
+ &msg_info);
+ if (err) {
+ dev_err(&func_to_func->hwif->pdev->dev, "Send mailbox failed, msg_id: %d\n",
+ msg_info.msg_id);
+ set_mbox_to_func_event(func_to_func, EVENT_FAIL);
+ goto err_send_mbox;
+ }
+
+ timeo = msecs_to_jiffies(timeout ? timeout : HINIC_MBOX_COMP_TIME);
+ if (!wait_for_completion_timeout(&mbox_for_resp->recv_done, timeo)) {
+ set_mbox_to_func_event(func_to_func, EVENT_TIMEOUT);
+ dev_err(&func_to_func->hwif->pdev->dev,
+ "Send mbox msg timeout, msg_id: %d\n", msg_info.msg_id);
+ err = -ETIMEDOUT;
+ goto err_send_mbox;
+ }
+
+ set_mbox_to_func_event(func_to_func, EVENT_END);
+
+ err = mbox_resp_info_handler(func_to_func, mbox_for_resp, mod, cmd,
+ buf_out, out_size);
+
+err_send_mbox:
+ up(&func_to_func->mbox_send_sem);
+
+ return err;
+}
+
+static int mbox_func_params_valid(struct hinic_mbox_func_to_func *func_to_func,
+ void *buf_in, u16 in_size)
+{
+ if (in_size > HINIC_MBOX_DATA_SIZE) {
+ dev_err(&func_to_func->hwif->pdev->dev,
+ "Mbox msg len(%d) exceed limit(%d)\n",
+ in_size, HINIC_MBOX_DATA_SIZE);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+int hinic_mbox_to_pf(struct hinic_hwdev *hwdev,
+ enum hinic_mod_type mod, u8 cmd, void *buf_in,
+ u16 in_size, void *buf_out, u16 *out_size, u32 timeout)
+{
+ struct hinic_mbox_func_to_func *func_to_func = hwdev->func_to_func;
+ int err = mbox_func_params_valid(func_to_func, buf_in, in_size);
+
+ if (err)
+ return err;
+
+ if (!HINIC_IS_VF(hwdev->hwif)) {
+ dev_err(&hwdev->hwif->pdev->dev, "Params error, func_type: %d\n",
+ HINIC_FUNC_TYPE(hwdev->hwif));
+ return -EINVAL;
+ }
+
+ return hinic_mbox_to_func(func_to_func, mod, cmd,
+ hinic_pf_id_of_vf_hw(hwdev->hwif), buf_in,
+ in_size, buf_out, out_size, timeout);
+}
+
+int hinic_mbox_to_vf(struct hinic_hwdev *hwdev,
+ enum hinic_mod_type mod, u16 vf_id, u8 cmd, void *buf_in,
+ u16 in_size, void *buf_out, u16 *out_size, u32 timeout)
+{
+ struct hinic_mbox_func_to_func *func_to_func;
+ u16 dst_func_idx;
+ int err;
+
+ if (!hwdev)
+ return -EINVAL;
+
+ func_to_func = hwdev->func_to_func;
+ err = mbox_func_params_valid(func_to_func, buf_in, in_size);
+ if (err)
+ return err;
+
+ if (HINIC_IS_VF(hwdev->hwif)) {
+ dev_err(&hwdev->hwif->pdev->dev, "Params error, func_type: %d\n",
+ HINIC_FUNC_TYPE(hwdev->hwif));
+ return -EINVAL;
+ }
+
+ if (!vf_id) {
+ dev_err(&hwdev->hwif->pdev->dev,
+ "VF id(%d) error!\n", vf_id);
+ return -EINVAL;
+ }
+
+ /* vf_offset_to_pf + vf_id is the vf's global function id of vf in
+ * this pf
+ */
+ dst_func_idx = hinic_glb_pf_vf_offset(hwdev->hwif) + vf_id;
+
+ return hinic_mbox_to_func(func_to_func, mod, cmd, dst_func_idx, buf_in,
+ in_size, buf_out, out_size, timeout);
+}
+
+static int init_mbox_info(struct hinic_recv_mbox *mbox_info)
+{
+ int err;
+
+ mbox_info->seq_id = SEQ_ID_MAX_VAL;
+
+ mbox_info->mbox = kzalloc(MBOX_MAX_BUF_SZ, GFP_KERNEL);
+ if (!mbox_info->mbox)
+ return -ENOMEM;
+
+ mbox_info->buf_out = kzalloc(MBOX_MAX_BUF_SZ, GFP_KERNEL);
+ if (!mbox_info->buf_out) {
+ err = -ENOMEM;
+ goto err_alloc_buf_out;
+ }
+
+ atomic_set(&mbox_info->msg_cnt, 0);
+
+ return 0;
+
+err_alloc_buf_out:
+ kfree(mbox_info->mbox);
+
+ return err;
+}
+
+static void clean_mbox_info(struct hinic_recv_mbox *mbox_info)
+{
+ kfree(mbox_info->buf_out);
+ kfree(mbox_info->mbox);
+}
+
+static int alloc_mbox_info(struct hinic_hwdev *hwdev,
+ struct hinic_recv_mbox *mbox_info)
+{
+ u16 func_idx, i;
+ int err;
+
+ for (func_idx = 0; func_idx < HINIC_MAX_FUNCTIONS; func_idx++) {
+ err = init_mbox_info(&mbox_info[func_idx]);
+ if (err) {
+ dev_err(&hwdev->hwif->pdev->dev, "Failed to init function %d mbox info\n",
+ func_idx);
+ goto err_init_mbox_info;
+ }
+ }
+
+ return 0;
+
+err_init_mbox_info:
+ for (i = 0; i < func_idx; i++)
+ clean_mbox_info(&mbox_info[i]);
+
+ return err;
+}
+
+static void free_mbox_info(struct hinic_recv_mbox *mbox_info)
+{
+ u16 func_idx;
+
+ for (func_idx = 0; func_idx < HINIC_MAX_FUNCTIONS; func_idx++)
+ clean_mbox_info(&mbox_info[func_idx]);
+}
+
+static void prepare_send_mbox(struct hinic_mbox_func_to_func *func_to_func)
+{
+ struct hinic_send_mbox *send_mbox = &func_to_func->send_mbox;
+
+ send_mbox->data = MBOX_AREA(func_to_func->hwif);
+}
+
+static int alloc_mbox_wb_status(struct hinic_mbox_func_to_func *func_to_func)
+{
+ struct hinic_send_mbox *send_mbox = &func_to_func->send_mbox;
+ struct hinic_hwdev *hwdev = func_to_func->hwdev;
+ u32 addr_h, addr_l;
+
+ send_mbox->wb_vaddr = dma_alloc_coherent(&hwdev->hwif->pdev->dev,
+ MBOX_WB_STATUS_LEN,
+ &send_mbox->wb_paddr,
+ GFP_KERNEL);
+ if (!send_mbox->wb_vaddr)
+ return -ENOMEM;
+
+ send_mbox->wb_status = send_mbox->wb_vaddr;
+
+ addr_h = upper_32_bits(send_mbox->wb_paddr);
+ addr_l = lower_32_bits(send_mbox->wb_paddr);
+
+ hinic_hwif_write_reg(hwdev->hwif, HINIC_FUNC_CSR_MAILBOX_RESULT_H_OFF,
+ addr_h);
+ hinic_hwif_write_reg(hwdev->hwif, HINIC_FUNC_CSR_MAILBOX_RESULT_L_OFF,
+ addr_l);
+
+ return 0;
+}
+
+static void free_mbox_wb_status(struct hinic_mbox_func_to_func *func_to_func)
+{
+ struct hinic_send_mbox *send_mbox = &func_to_func->send_mbox;
+ struct hinic_hwdev *hwdev = func_to_func->hwdev;
+
+ hinic_hwif_write_reg(hwdev->hwif, HINIC_FUNC_CSR_MAILBOX_RESULT_H_OFF,
+ 0);
+ hinic_hwif_write_reg(hwdev->hwif, HINIC_FUNC_CSR_MAILBOX_RESULT_L_OFF,
+ 0);
+
+ dma_free_coherent(&hwdev->hwif->pdev->dev, MBOX_WB_STATUS_LEN,
+ send_mbox->wb_vaddr,
+ send_mbox->wb_paddr);
+}
+
+static int comm_pf_mbox_handler(void *handle, u16 vf_id, u8 cmd, void *buf_in,
+ u16 in_size, void *buf_out, u16 *out_size)
+{
+ struct hinic_hwdev *hwdev = handle;
+ struct hinic_pfhwdev *pfhwdev;
+ int err = 0;
+
+ pfhwdev = container_of(hwdev, struct hinic_pfhwdev, hwdev);
+
+ if (cmd == HINIC_COMM_CMD_START_FLR) {
+ *out_size = 0;
+ } else {
+ err = hinic_msg_to_mgmt(&pfhwdev->pf_to_mgmt, HINIC_MOD_COMM,
+ cmd, buf_in, in_size, buf_out, out_size,
+ HINIC_MGMT_MSG_SYNC);
+ if (err && err != HINIC_MBOX_PF_BUSY_ACTIVE_FW)
+ dev_err(&hwdev->hwif->pdev->dev,
+ "PF mbox common callback handler err: %d\n",
+ err);
+ }
+
+ return err;
+}
+
+int hinic_func_to_func_init(struct hinic_hwdev *hwdev)
+{
+ struct hinic_mbox_func_to_func *func_to_func;
+ struct hinic_pfhwdev *pfhwdev;
+ int err;
+
+ pfhwdev = container_of(hwdev, struct hinic_pfhwdev, hwdev);
+ func_to_func = kzalloc(sizeof(*func_to_func), GFP_KERNEL);
+ if (!func_to_func)
+ return -ENOMEM;
+
+ hwdev->func_to_func = func_to_func;
+ func_to_func->hwdev = hwdev;
+ func_to_func->hwif = hwdev->hwif;
+ sema_init(&func_to_func->mbox_send_sem, 1);
+ sema_init(&func_to_func->msg_send_sem, 1);
+ spin_lock_init(&func_to_func->mbox_lock);
+ func_to_func->workq = create_singlethread_workqueue(HINIC_MBOX_WQ_NAME);
+ if (!func_to_func->workq) {
+ dev_err(&hwdev->hwif->pdev->dev, "Failed to initialize MBOX workqueue\n");
+ err = -ENOMEM;
+ goto err_create_mbox_workq;
+ }
+
+ err = alloc_mbox_info(hwdev, func_to_func->mbox_send);
+ if (err) {
+ dev_err(&hwdev->hwif->pdev->dev, "Failed to alloc mem for mbox_active\n");
+ goto err_alloc_mbox_for_send;
+ }
+
+ err = alloc_mbox_info(hwdev, func_to_func->mbox_resp);
+ if (err) {
+ dev_err(&hwdev->hwif->pdev->dev, "Failed to alloc mem for mbox_passive\n");
+ goto err_alloc_mbox_for_resp;
+ }
+
+ err = alloc_mbox_wb_status(func_to_func);
+ if (err) {
+ dev_err(&hwdev->hwif->pdev->dev, "Failed to alloc mbox write back status\n");
+ goto err_alloc_wb_status;
+ }
+
+ prepare_send_mbox(func_to_func);
+
+ hinic_aeq_register_hw_cb(&hwdev->aeqs, HINIC_MBX_FROM_FUNC,
+ &pfhwdev->hwdev, hinic_mbox_func_aeqe_handler);
+ hinic_aeq_register_hw_cb(&hwdev->aeqs, HINIC_MBX_SEND_RSLT,
+ &pfhwdev->hwdev, hinic_mbox_self_aeqe_handler);
+
+ if (!HINIC_IS_VF(hwdev->hwif))
+ hinic_register_pf_mbox_cb(hwdev, HINIC_MOD_COMM,
+ comm_pf_mbox_handler);
+
+ return 0;
+
+err_alloc_wb_status:
+ free_mbox_info(func_to_func->mbox_resp);
+
+err_alloc_mbox_for_resp:
+ free_mbox_info(func_to_func->mbox_send);
+
+err_alloc_mbox_for_send:
+ destroy_workqueue(func_to_func->workq);
+
+err_create_mbox_workq:
+ kfree(func_to_func);
+
+ return err;
+}
+
+void hinic_func_to_func_free(struct hinic_hwdev *hwdev)
+{
+ struct hinic_mbox_func_to_func *func_to_func = hwdev->func_to_func;
+
+ hinic_aeq_unregister_hw_cb(&hwdev->aeqs, HINIC_MBX_FROM_FUNC);
+ hinic_aeq_unregister_hw_cb(&hwdev->aeqs, HINIC_MBX_SEND_RSLT);
+
+ hinic_unregister_pf_mbox_cb(hwdev, HINIC_MOD_COMM);
+ /* destroy workqueue before free related mbox resources in case of
+ * illegal resource access
+ */
+ destroy_workqueue(func_to_func->workq);
+
+ free_mbox_wb_status(func_to_func);
+ free_mbox_info(func_to_func->mbox_resp);
+ free_mbox_info(func_to_func->mbox_send);
+
+ kfree(func_to_func);
+}
projects / platform / kernel / linux-rpi.git / commitdiff