Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Huisong Li | 6066 | 99.92% | 3 | 50.00% |
Uwe Kleine-König | 2 | 0.03% | 1 | 16.67% |
Sudeep Holla | 2 | 0.03% | 1 | 16.67% |
Arnd Bergmann | 1 | 0.02% | 1 | 16.67% |
Total | 6071 | 6 |
// SPDX-License-Identifier: GPL-2.0+ /* * The Huawei Cache Coherence System (HCCS) is a multi-chip interconnection * bus protocol. * * Copyright (c) 2023 Hisilicon Limited. * Author: Huisong Li <lihuisong@huawei.com> * * HCCS driver for Kunpeng SoC provides the following features: * - Retrieve the following information about each port: * - port type * - lane mode * - enable * - current lane mode * - link finite state machine * - lane mask * - CRC error count * * - Retrieve the following information about all the ports on the chip or * the die: * - if all enabled ports are in linked * - if all linked ports are in full lane * - CRC error count sum */ #include <linux/acpi.h> #include <linux/iopoll.h> #include <linux/platform_device.h> #include <linux/sysfs.h> #include <acpi/pcc.h> #include "kunpeng_hccs.h" /* * Arbitrary retries in case the remote processor is slow to respond * to PCC commands */ #define HCCS_PCC_CMD_WAIT_RETRIES_NUM 500ULL #define HCCS_POLL_STATUS_TIME_INTERVAL_US 3 static struct hccs_port_info *kobj_to_port_info(struct kobject *k) { return container_of(k, struct hccs_port_info, kobj); } static struct hccs_die_info *kobj_to_die_info(struct kobject *k) { return container_of(k, struct hccs_die_info, kobj); } static struct hccs_chip_info *kobj_to_chip_info(struct kobject *k) { return container_of(k, struct hccs_chip_info, kobj); } struct hccs_register_ctx { struct device *dev; u8 chan_id; int err; }; static acpi_status hccs_get_register_cb(struct acpi_resource *ares, void *context) { struct acpi_resource_generic_register *reg; struct hccs_register_ctx *ctx = context; if (ares->type != ACPI_RESOURCE_TYPE_GENERIC_REGISTER) return AE_OK; reg = &ares->data.generic_reg; if (reg->space_id != ACPI_ADR_SPACE_PLATFORM_COMM) { dev_err(ctx->dev, "Bad register resource.\n"); ctx->err = -EINVAL; return AE_ERROR; } ctx->chan_id = reg->access_size; return AE_OK; } static int hccs_get_pcc_chan_id(struct hccs_dev *hdev) { acpi_handle handle = ACPI_HANDLE(hdev->dev); struct hccs_register_ctx ctx = {0}; acpi_status status; if (!acpi_has_method(handle, METHOD_NAME__CRS)) return -ENODEV; ctx.dev = hdev->dev; status = acpi_walk_resources(handle, METHOD_NAME__CRS, hccs_get_register_cb, &ctx); if (ACPI_FAILURE(status)) return ctx.err; hdev->chan_id = ctx.chan_id; return 0; } static void hccs_chan_tx_done(struct mbox_client *cl, void *msg, int ret) { if (ret < 0) pr_debug("TX did not complete: CMD sent:0x%x, ret:%d\n", *(u8 *)msg, ret); else pr_debug("TX completed. CMD sent:0x%x, ret:%d\n", *(u8 *)msg, ret); } static void hccs_unregister_pcc_channel(struct hccs_dev *hdev) { struct hccs_mbox_client_info *cl_info = &hdev->cl_info; if (cl_info->pcc_comm_addr) iounmap(cl_info->pcc_comm_addr); pcc_mbox_free_channel(hdev->cl_info.pcc_chan); } static int hccs_register_pcc_channel(struct hccs_dev *hdev) { struct hccs_mbox_client_info *cl_info = &hdev->cl_info; struct mbox_client *cl = &cl_info->client; struct pcc_mbox_chan *pcc_chan; struct device *dev = hdev->dev; int rc; cl->dev = dev; cl->tx_block = false; cl->knows_txdone = true; cl->tx_done = hccs_chan_tx_done; pcc_chan = pcc_mbox_request_channel(cl, hdev->chan_id); if (IS_ERR(pcc_chan)) { dev_err(dev, "PPC channel request failed.\n"); rc = -ENODEV; goto out; } cl_info->pcc_chan = pcc_chan; cl_info->mbox_chan = pcc_chan->mchan; /* * pcc_chan->latency is just a nominal value. In reality the remote * processor could be much slower to reply. So add an arbitrary amount * of wait on top of nominal. */ cl_info->deadline_us = HCCS_PCC_CMD_WAIT_RETRIES_NUM * pcc_chan->latency; if (cl_info->mbox_chan->mbox->txdone_irq) { dev_err(dev, "PCC IRQ in PCCT is enabled.\n"); rc = -EINVAL; goto err_mbx_channel_free; } if (pcc_chan->shmem_base_addr) { cl_info->pcc_comm_addr = ioremap(pcc_chan->shmem_base_addr, pcc_chan->shmem_size); if (!cl_info->pcc_comm_addr) { dev_err(dev, "Failed to ioremap PCC communication region for channel-%d.\n", hdev->chan_id); rc = -ENOMEM; goto err_mbx_channel_free; } } return 0; err_mbx_channel_free: pcc_mbox_free_channel(cl_info->pcc_chan); out: return rc; } static int hccs_check_chan_cmd_complete(struct hccs_dev *hdev) { struct hccs_mbox_client_info *cl_info = &hdev->cl_info; struct acpi_pcct_shared_memory __iomem *comm_base = cl_info->pcc_comm_addr; u16 status; int ret; /* * Poll PCC status register every 3us(delay_us) for maximum of * deadline_us(timeout_us) until PCC command complete bit is set(cond) */ ret = readw_poll_timeout(&comm_base->status, status, status & PCC_STATUS_CMD_COMPLETE, HCCS_POLL_STATUS_TIME_INTERVAL_US, cl_info->deadline_us); if (unlikely(ret)) dev_err(hdev->dev, "poll PCC status failed, ret = %d.\n", ret); return ret; } static int hccs_pcc_cmd_send(struct hccs_dev *hdev, u8 cmd, struct hccs_desc *desc) { struct hccs_mbox_client_info *cl_info = &hdev->cl_info; void __iomem *comm_space = cl_info->pcc_comm_addr + sizeof(struct acpi_pcct_shared_memory); struct hccs_fw_inner_head *fw_inner_head; struct acpi_pcct_shared_memory tmp = {0}; u16 comm_space_size; int ret; /* Write signature for this subspace */ tmp.signature = PCC_SIGNATURE | hdev->chan_id; /* Write to the shared command region */ tmp.command = cmd; /* Clear cmd complete bit */ tmp.status = 0; memcpy_toio(cl_info->pcc_comm_addr, (void *)&tmp, sizeof(struct acpi_pcct_shared_memory)); /* Copy the message to the PCC comm space */ comm_space_size = HCCS_PCC_SHARE_MEM_BYTES - sizeof(struct acpi_pcct_shared_memory); memcpy_toio(comm_space, (void *)desc, comm_space_size); /* Ring doorbell */ ret = mbox_send_message(cl_info->mbox_chan, &cmd); if (ret < 0) { dev_err(hdev->dev, "Send PCC mbox message failed, ret = %d.\n", ret); goto end; } /* Wait for completion */ ret = hccs_check_chan_cmd_complete(hdev); if (ret) goto end; /* Copy response data */ memcpy_fromio((void *)desc, comm_space, comm_space_size); fw_inner_head = &desc->rsp.fw_inner_head; if (fw_inner_head->retStatus) { dev_err(hdev->dev, "Execute PCC command failed, error code = %u.\n", fw_inner_head->retStatus); ret = -EIO; } end: mbox_client_txdone(cl_info->mbox_chan, ret); return ret; } static void hccs_init_req_desc(struct hccs_desc *desc) { struct hccs_req_desc *req = &desc->req; memset(desc, 0, sizeof(*desc)); req->req_head.module_code = HCCS_SERDES_MODULE_CODE; } static int hccs_get_dev_caps(struct hccs_dev *hdev) { struct hccs_desc desc; int ret; hccs_init_req_desc(&desc); ret = hccs_pcc_cmd_send(hdev, HCCS_GET_DEV_CAP, &desc); if (ret) { dev_err(hdev->dev, "Get device capabilities failed, ret = %d.\n", ret); return ret; } memcpy(&hdev->caps, desc.rsp.data, sizeof(hdev->caps)); return 0; } static int hccs_query_chip_num_on_platform(struct hccs_dev *hdev) { struct hccs_desc desc; int ret; hccs_init_req_desc(&desc); ret = hccs_pcc_cmd_send(hdev, HCCS_GET_CHIP_NUM, &desc); if (ret) { dev_err(hdev->dev, "query system chip number failed, ret = %d.\n", ret); return ret; } hdev->chip_num = *((u8 *)&desc.rsp.data); if (!hdev->chip_num) { dev_err(hdev->dev, "chip num obtained from firmware is zero.\n"); return -EINVAL; } return 0; } static int hccs_get_chip_info(struct hccs_dev *hdev, struct hccs_chip_info *chip) { struct hccs_die_num_req_param *req_param; struct hccs_desc desc; int ret; hccs_init_req_desc(&desc); req_param = (struct hccs_die_num_req_param *)desc.req.data; req_param->chip_id = chip->chip_id; ret = hccs_pcc_cmd_send(hdev, HCCS_GET_DIE_NUM, &desc); if (ret) return ret; chip->die_num = *((u8 *)&desc.rsp.data); return 0; } static int hccs_query_chip_info_on_platform(struct hccs_dev *hdev) { struct hccs_chip_info *chip; int ret; u8 idx; ret = hccs_query_chip_num_on_platform(hdev); if (ret) { dev_err(hdev->dev, "query chip number on platform failed, ret = %d.\n", ret); return ret; } hdev->chips = devm_kzalloc(hdev->dev, hdev->chip_num * sizeof(struct hccs_chip_info), GFP_KERNEL); if (!hdev->chips) { dev_err(hdev->dev, "allocate all chips memory failed.\n"); return -ENOMEM; } for (idx = 0; idx < hdev->chip_num; idx++) { chip = &hdev->chips[idx]; chip->chip_id = idx; ret = hccs_get_chip_info(hdev, chip); if (ret) { dev_err(hdev->dev, "get chip%u info failed, ret = %d.\n", idx, ret); return ret; } chip->hdev = hdev; } return 0; } static int hccs_query_die_info_on_chip(struct hccs_dev *hdev, u8 chip_id, u8 die_idx, struct hccs_die_info *die) { struct hccs_die_info_req_param *req_param; struct hccs_die_info_rsp_data *rsp_data; struct hccs_desc desc; int ret; hccs_init_req_desc(&desc); req_param = (struct hccs_die_info_req_param *)desc.req.data; req_param->chip_id = chip_id; req_param->die_idx = die_idx; ret = hccs_pcc_cmd_send(hdev, HCCS_GET_DIE_INFO, &desc); if (ret) return ret; rsp_data = (struct hccs_die_info_rsp_data *)desc.rsp.data; die->die_id = rsp_data->die_id; die->port_num = rsp_data->port_num; die->min_port_id = rsp_data->min_port_id; die->max_port_id = rsp_data->max_port_id; if (die->min_port_id > die->max_port_id) { dev_err(hdev->dev, "min port id(%u) > max port id(%u) on die_idx(%u).\n", die->min_port_id, die->max_port_id, die_idx); return -EINVAL; } if (die->max_port_id > HCCS_DIE_MAX_PORT_ID) { dev_err(hdev->dev, "max port id(%u) on die_idx(%u) is too big.\n", die->max_port_id, die_idx); return -EINVAL; } return 0; } static int hccs_query_all_die_info_on_platform(struct hccs_dev *hdev) { struct device *dev = hdev->dev; struct hccs_chip_info *chip; struct hccs_die_info *die; u8 i, j; int ret; for (i = 0; i < hdev->chip_num; i++) { chip = &hdev->chips[i]; if (!chip->die_num) continue; chip->dies = devm_kzalloc(hdev->dev, chip->die_num * sizeof(struct hccs_die_info), GFP_KERNEL); if (!chip->dies) { dev_err(dev, "allocate all dies memory on chip%u failed.\n", i); return -ENOMEM; } for (j = 0; j < chip->die_num; j++) { die = &chip->dies[j]; ret = hccs_query_die_info_on_chip(hdev, i, j, die); if (ret) { dev_err(dev, "get die idx (%u) info on chip%u failed, ret = %d.\n", j, i, ret); return ret; } die->chip = chip; } } return 0; } static int hccs_get_bd_info(struct hccs_dev *hdev, u8 opcode, struct hccs_desc *desc, void *buf, size_t buf_len, struct hccs_rsp_head *rsp_head) { struct hccs_rsp_head *head; struct hccs_rsp_desc *rsp; int ret; ret = hccs_pcc_cmd_send(hdev, opcode, desc); if (ret) return ret; rsp = &desc->rsp; head = &rsp->rsp_head; if (head->data_len > buf_len) { dev_err(hdev->dev, "buffer overflow (buf_len = %zu, data_len = %u)!\n", buf_len, head->data_len); return -ENOMEM; } memcpy(buf, rsp->data, head->data_len); *rsp_head = *head; return 0; } static int hccs_get_all_port_attr(struct hccs_dev *hdev, struct hccs_die_info *die, struct hccs_port_attr *attrs, u16 size) { struct hccs_die_comm_req_param *req_param; struct hccs_req_head *req_head; struct hccs_rsp_head rsp_head; struct hccs_desc desc; size_t left_buf_len; u32 data_len = 0; u8 start_id; u8 *buf; int ret; buf = (u8 *)attrs; left_buf_len = sizeof(struct hccs_port_attr) * size; start_id = die->min_port_id; while (start_id <= die->max_port_id) { hccs_init_req_desc(&desc); req_head = &desc.req.req_head; req_head->start_id = start_id; req_param = (struct hccs_die_comm_req_param *)desc.req.data; req_param->chip_id = die->chip->chip_id; req_param->die_id = die->die_id; ret = hccs_get_bd_info(hdev, HCCS_GET_DIE_PORT_INFO, &desc, buf + data_len, left_buf_len, &rsp_head); if (ret) { dev_err(hdev->dev, "get the information of port%u on die%u failed, ret = %d.\n", start_id, die->die_id, ret); return ret; } data_len += rsp_head.data_len; left_buf_len -= rsp_head.data_len; if (unlikely(rsp_head.next_id <= start_id)) { dev_err(hdev->dev, "next port id (%u) is not greater than last start id (%u) on die%u.\n", rsp_head.next_id, start_id, die->die_id); return -EINVAL; } start_id = rsp_head.next_id; } return 0; } static int hccs_get_all_port_info_on_die(struct hccs_dev *hdev, struct hccs_die_info *die) { struct hccs_port_attr *attrs; struct hccs_port_info *port; int ret; u8 i; attrs = kcalloc(die->port_num, sizeof(struct hccs_port_attr), GFP_KERNEL); if (!attrs) return -ENOMEM; ret = hccs_get_all_port_attr(hdev, die, attrs, die->port_num); if (ret) goto out; for (i = 0; i < die->port_num; i++) { port = &die->ports[i]; port->port_id = attrs[i].port_id; port->port_type = attrs[i].port_type; port->lane_mode = attrs[i].lane_mode; port->enable = attrs[i].enable; port->die = die; } out: kfree(attrs); return ret; } static int hccs_query_all_port_info_on_platform(struct hccs_dev *hdev) { struct device *dev = hdev->dev; struct hccs_chip_info *chip; struct hccs_die_info *die; u8 i, j; int ret; for (i = 0; i < hdev->chip_num; i++) { chip = &hdev->chips[i]; for (j = 0; j < chip->die_num; j++) { die = &chip->dies[j]; if (!die->port_num) continue; die->ports = devm_kzalloc(dev, die->port_num * sizeof(struct hccs_port_info), GFP_KERNEL); if (!die->ports) { dev_err(dev, "allocate ports memory on chip%u/die%u failed.\n", i, die->die_id); return -ENOMEM; } ret = hccs_get_all_port_info_on_die(hdev, die); if (ret) { dev_err(dev, "get all port info on chip%u/die%u failed, ret = %d.\n", i, die->die_id, ret); return ret; } } } return 0; } static int hccs_get_hw_info(struct hccs_dev *hdev) { int ret; ret = hccs_query_chip_info_on_platform(hdev); if (ret) { dev_err(hdev->dev, "query chip info on platform failed, ret = %d.\n", ret); return ret; } ret = hccs_query_all_die_info_on_platform(hdev); if (ret) { dev_err(hdev->dev, "query all die info on platform failed, ret = %d.\n", ret); return ret; } ret = hccs_query_all_port_info_on_platform(hdev); if (ret) { dev_err(hdev->dev, "query all port info on platform failed, ret = %d.\n", ret); return ret; } return 0; } static int hccs_query_port_link_status(struct hccs_dev *hdev, const struct hccs_port_info *port, struct hccs_link_status *link_status) { const struct hccs_die_info *die = port->die; const struct hccs_chip_info *chip = die->chip; struct hccs_port_comm_req_param *req_param; struct hccs_desc desc; int ret; hccs_init_req_desc(&desc); req_param = (struct hccs_port_comm_req_param *)desc.req.data; req_param->chip_id = chip->chip_id; req_param->die_id = die->die_id; req_param->port_id = port->port_id; ret = hccs_pcc_cmd_send(hdev, HCCS_GET_PORT_LINK_STATUS, &desc); if (ret) { dev_err(hdev->dev, "get port link status info failed, ret = %d.\n", ret); return ret; } *link_status = *((struct hccs_link_status *)desc.rsp.data); return 0; } static int hccs_query_port_crc_err_cnt(struct hccs_dev *hdev, const struct hccs_port_info *port, u64 *crc_err_cnt) { const struct hccs_die_info *die = port->die; const struct hccs_chip_info *chip = die->chip; struct hccs_port_comm_req_param *req_param; struct hccs_desc desc; int ret; hccs_init_req_desc(&desc); req_param = (struct hccs_port_comm_req_param *)desc.req.data; req_param->chip_id = chip->chip_id; req_param->die_id = die->die_id; req_param->port_id = port->port_id; ret = hccs_pcc_cmd_send(hdev, HCCS_GET_PORT_CRC_ERR_CNT, &desc); if (ret) { dev_err(hdev->dev, "get port crc error count failed, ret = %d.\n", ret); return ret; } memcpy(crc_err_cnt, &desc.rsp.data, sizeof(u64)); return 0; } static int hccs_get_die_all_link_status(struct hccs_dev *hdev, const struct hccs_die_info *die, u8 *all_linked) { struct hccs_die_comm_req_param *req_param; struct hccs_desc desc; int ret; if (die->port_num == 0) { *all_linked = 1; return 0; } hccs_init_req_desc(&desc); req_param = (struct hccs_die_comm_req_param *)desc.req.data; req_param->chip_id = die->chip->chip_id; req_param->die_id = die->die_id; ret = hccs_pcc_cmd_send(hdev, HCCS_GET_DIE_PORTS_LINK_STA, &desc); if (ret) { dev_err(hdev->dev, "get link status of all ports failed on die%u, ret = %d.\n", die->die_id, ret); return ret; } *all_linked = *((u8 *)&desc.rsp.data); return 0; } static int hccs_get_die_all_port_lane_status(struct hccs_dev *hdev, const struct hccs_die_info *die, u8 *full_lane) { struct hccs_die_comm_req_param *req_param; struct hccs_desc desc; int ret; if (die->port_num == 0) { *full_lane = 1; return 0; } hccs_init_req_desc(&desc); req_param = (struct hccs_die_comm_req_param *)desc.req.data; req_param->chip_id = die->chip->chip_id; req_param->die_id = die->die_id; ret = hccs_pcc_cmd_send(hdev, HCCS_GET_DIE_PORTS_LANE_STA, &desc); if (ret) { dev_err(hdev->dev, "get lane status of all ports failed on die%u, ret = %d.\n", die->die_id, ret); return ret; } *full_lane = *((u8 *)&desc.rsp.data); return 0; } static int hccs_get_die_total_crc_err_cnt(struct hccs_dev *hdev, const struct hccs_die_info *die, u64 *total_crc_err_cnt) { struct hccs_die_comm_req_param *req_param; struct hccs_desc desc; int ret; if (die->port_num == 0) { *total_crc_err_cnt = 0; return 0; } hccs_init_req_desc(&desc); req_param = (struct hccs_die_comm_req_param *)desc.req.data; req_param->chip_id = die->chip->chip_id; req_param->die_id = die->die_id; ret = hccs_pcc_cmd_send(hdev, HCCS_GET_DIE_PORTS_CRC_ERR_CNT, &desc); if (ret) { dev_err(hdev->dev, "get crc error count sum failed on die%u, ret = %d.\n", die->die_id, ret); return ret; } memcpy(total_crc_err_cnt, &desc.rsp.data, sizeof(u64)); return 0; } static ssize_t hccs_show(struct kobject *k, struct attribute *attr, char *buf) { struct kobj_attribute *kobj_attr; kobj_attr = container_of(attr, struct kobj_attribute, attr); return kobj_attr->show(k, kobj_attr, buf); } static const struct sysfs_ops hccs_comm_ops = { .show = hccs_show, }; static ssize_t type_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { const struct hccs_port_info *port = kobj_to_port_info(kobj); return sysfs_emit(buf, "HCCS-v%u\n", port->port_type); } static struct kobj_attribute hccs_type_attr = __ATTR_RO(type); static ssize_t lane_mode_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { const struct hccs_port_info *port = kobj_to_port_info(kobj); return sysfs_emit(buf, "x%u\n", port->lane_mode); } static struct kobj_attribute lane_mode_attr = __ATTR_RO(lane_mode); static ssize_t enable_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { const struct hccs_port_info *port = kobj_to_port_info(kobj); return sysfs_emit(buf, "%u\n", port->enable); } static struct kobj_attribute port_enable_attr = __ATTR_RO(enable); static ssize_t cur_lane_num_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { const struct hccs_port_info *port = kobj_to_port_info(kobj); struct hccs_dev *hdev = port->die->chip->hdev; struct hccs_link_status link_status = {0}; int ret; mutex_lock(&hdev->lock); ret = hccs_query_port_link_status(hdev, port, &link_status); mutex_unlock(&hdev->lock); if (ret) return ret; return sysfs_emit(buf, "%u\n", link_status.lane_num); } static struct kobj_attribute cur_lane_num_attr = __ATTR_RO(cur_lane_num); static ssize_t link_fsm_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { const struct hccs_port_info *port = kobj_to_port_info(kobj); struct hccs_dev *hdev = port->die->chip->hdev; struct hccs_link_status link_status = {0}; const struct { u8 link_fsm; char *str; } link_fsm_map[] = { {HCCS_PORT_RESET, "reset"}, {HCCS_PORT_SETUP, "setup"}, {HCCS_PORT_CONFIG, "config"}, {HCCS_PORT_READY, "link-up"}, }; const char *link_fsm_str = "unknown"; size_t i; int ret; mutex_lock(&hdev->lock); ret = hccs_query_port_link_status(hdev, port, &link_status); mutex_unlock(&hdev->lock); if (ret) return ret; for (i = 0; i < ARRAY_SIZE(link_fsm_map); i++) { if (link_fsm_map[i].link_fsm == link_status.link_fsm) { link_fsm_str = link_fsm_map[i].str; break; } } return sysfs_emit(buf, "%s\n", link_fsm_str); } static struct kobj_attribute link_fsm_attr = __ATTR_RO(link_fsm); static ssize_t lane_mask_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { const struct hccs_port_info *port = kobj_to_port_info(kobj); struct hccs_dev *hdev = port->die->chip->hdev; struct hccs_link_status link_status = {0}; int ret; mutex_lock(&hdev->lock); ret = hccs_query_port_link_status(hdev, port, &link_status); mutex_unlock(&hdev->lock); if (ret) return ret; return sysfs_emit(buf, "0x%x\n", link_status.lane_mask); } static struct kobj_attribute lane_mask_attr = __ATTR_RO(lane_mask); static ssize_t crc_err_cnt_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { const struct hccs_port_info *port = kobj_to_port_info(kobj); struct hccs_dev *hdev = port->die->chip->hdev; u64 crc_err_cnt; int ret; mutex_lock(&hdev->lock); ret = hccs_query_port_crc_err_cnt(hdev, port, &crc_err_cnt); mutex_unlock(&hdev->lock); if (ret) return ret; return sysfs_emit(buf, "%llu\n", crc_err_cnt); } static struct kobj_attribute crc_err_cnt_attr = __ATTR_RO(crc_err_cnt); static struct attribute *hccs_port_default_attrs[] = { &hccs_type_attr.attr, &lane_mode_attr.attr, &port_enable_attr.attr, &cur_lane_num_attr.attr, &link_fsm_attr.attr, &lane_mask_attr.attr, &crc_err_cnt_attr.attr, NULL, }; ATTRIBUTE_GROUPS(hccs_port_default); static const struct kobj_type hccs_port_type = { .sysfs_ops = &hccs_comm_ops, .default_groups = hccs_port_default_groups, }; static ssize_t all_linked_on_die_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { const struct hccs_die_info *die = kobj_to_die_info(kobj); struct hccs_dev *hdev = die->chip->hdev; u8 all_linked; int ret; mutex_lock(&hdev->lock); ret = hccs_get_die_all_link_status(hdev, die, &all_linked); mutex_unlock(&hdev->lock); if (ret) return ret; return sysfs_emit(buf, "%u\n", all_linked); } static struct kobj_attribute all_linked_on_die_attr = __ATTR(all_linked, 0444, all_linked_on_die_show, NULL); static ssize_t linked_full_lane_on_die_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { const struct hccs_die_info *die = kobj_to_die_info(kobj); struct hccs_dev *hdev = die->chip->hdev; u8 full_lane; int ret; mutex_lock(&hdev->lock); ret = hccs_get_die_all_port_lane_status(hdev, die, &full_lane); mutex_unlock(&hdev->lock); if (ret) return ret; return sysfs_emit(buf, "%u\n", full_lane); } static struct kobj_attribute linked_full_lane_on_die_attr = __ATTR(linked_full_lane, 0444, linked_full_lane_on_die_show, NULL); static ssize_t crc_err_cnt_sum_on_die_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { const struct hccs_die_info *die = kobj_to_die_info(kobj); struct hccs_dev *hdev = die->chip->hdev; u64 total_crc_err_cnt; int ret; mutex_lock(&hdev->lock); ret = hccs_get_die_total_crc_err_cnt(hdev, die, &total_crc_err_cnt); mutex_unlock(&hdev->lock); if (ret) return ret; return sysfs_emit(buf, "%llu\n", total_crc_err_cnt); } static struct kobj_attribute crc_err_cnt_sum_on_die_attr = __ATTR(crc_err_cnt, 0444, crc_err_cnt_sum_on_die_show, NULL); static struct attribute *hccs_die_default_attrs[] = { &all_linked_on_die_attr.attr, &linked_full_lane_on_die_attr.attr, &crc_err_cnt_sum_on_die_attr.attr, NULL, }; ATTRIBUTE_GROUPS(hccs_die_default); static const struct kobj_type hccs_die_type = { .sysfs_ops = &hccs_comm_ops, .default_groups = hccs_die_default_groups, }; static ssize_t all_linked_on_chip_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { const struct hccs_chip_info *chip = kobj_to_chip_info(kobj); struct hccs_dev *hdev = chip->hdev; const struct hccs_die_info *die; u8 all_linked = 1; u8 i, tmp; int ret; mutex_lock(&hdev->lock); for (i = 0; i < chip->die_num; i++) { die = &chip->dies[i]; ret = hccs_get_die_all_link_status(hdev, die, &tmp); if (ret) { mutex_unlock(&hdev->lock); return ret; } if (tmp != all_linked) { all_linked = 0; break; } } mutex_unlock(&hdev->lock); return sysfs_emit(buf, "%u\n", all_linked); } static struct kobj_attribute all_linked_on_chip_attr = __ATTR(all_linked, 0444, all_linked_on_chip_show, NULL); static ssize_t linked_full_lane_on_chip_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { const struct hccs_chip_info *chip = kobj_to_chip_info(kobj); struct hccs_dev *hdev = chip->hdev; const struct hccs_die_info *die; u8 full_lane = 1; u8 i, tmp; int ret; mutex_lock(&hdev->lock); for (i = 0; i < chip->die_num; i++) { die = &chip->dies[i]; ret = hccs_get_die_all_port_lane_status(hdev, die, &tmp); if (ret) { mutex_unlock(&hdev->lock); return ret; } if (tmp != full_lane) { full_lane = 0; break; } } mutex_unlock(&hdev->lock); return sysfs_emit(buf, "%u\n", full_lane); } static struct kobj_attribute linked_full_lane_on_chip_attr = __ATTR(linked_full_lane, 0444, linked_full_lane_on_chip_show, NULL); static ssize_t crc_err_cnt_sum_on_chip_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { const struct hccs_chip_info *chip = kobj_to_chip_info(kobj); u64 crc_err_cnt, total_crc_err_cnt = 0; struct hccs_dev *hdev = chip->hdev; const struct hccs_die_info *die; int ret; u16 i; mutex_lock(&hdev->lock); for (i = 0; i < chip->die_num; i++) { die = &chip->dies[i]; ret = hccs_get_die_total_crc_err_cnt(hdev, die, &crc_err_cnt); if (ret) { mutex_unlock(&hdev->lock); return ret; } total_crc_err_cnt += crc_err_cnt; } mutex_unlock(&hdev->lock); return sysfs_emit(buf, "%llu\n", total_crc_err_cnt); } static struct kobj_attribute crc_err_cnt_sum_on_chip_attr = __ATTR(crc_err_cnt, 0444, crc_err_cnt_sum_on_chip_show, NULL); static struct attribute *hccs_chip_default_attrs[] = { &all_linked_on_chip_attr.attr, &linked_full_lane_on_chip_attr.attr, &crc_err_cnt_sum_on_chip_attr.attr, NULL, }; ATTRIBUTE_GROUPS(hccs_chip_default); static const struct kobj_type hccs_chip_type = { .sysfs_ops = &hccs_comm_ops, .default_groups = hccs_chip_default_groups, }; static void hccs_remove_die_dir(struct hccs_die_info *die) { struct hccs_port_info *port; u8 i; for (i = 0; i < die->port_num; i++) { port = &die->ports[i]; if (port->dir_created) kobject_put(&port->kobj); } kobject_put(&die->kobj); } static void hccs_remove_chip_dir(struct hccs_chip_info *chip) { struct hccs_die_info *die; u8 i; for (i = 0; i < chip->die_num; i++) { die = &chip->dies[i]; if (die->dir_created) hccs_remove_die_dir(die); } kobject_put(&chip->kobj); } static void hccs_remove_topo_dirs(struct hccs_dev *hdev) { u8 i; for (i = 0; i < hdev->chip_num; i++) hccs_remove_chip_dir(&hdev->chips[i]); } static int hccs_create_hccs_dir(struct hccs_dev *hdev, struct hccs_die_info *die, struct hccs_port_info *port) { int ret; ret = kobject_init_and_add(&port->kobj, &hccs_port_type, &die->kobj, "hccs%d", port->port_id); if (ret) { kobject_put(&port->kobj); return ret; } return 0; } static int hccs_create_die_dir(struct hccs_dev *hdev, struct hccs_chip_info *chip, struct hccs_die_info *die) { struct hccs_port_info *port; int ret; u16 i; ret = kobject_init_and_add(&die->kobj, &hccs_die_type, &chip->kobj, "die%d", die->die_id); if (ret) { kobject_put(&die->kobj); return ret; } for (i = 0; i < die->port_num; i++) { port = &die->ports[i]; ret = hccs_create_hccs_dir(hdev, die, port); if (ret) { dev_err(hdev->dev, "create hccs%d dir failed.\n", port->port_id); goto err; } port->dir_created = true; } return 0; err: hccs_remove_die_dir(die); return ret; } static int hccs_create_chip_dir(struct hccs_dev *hdev, struct hccs_chip_info *chip) { struct hccs_die_info *die; int ret; u16 id; ret = kobject_init_and_add(&chip->kobj, &hccs_chip_type, &hdev->dev->kobj, "chip%d", chip->chip_id); if (ret) { kobject_put(&chip->kobj); return ret; } for (id = 0; id < chip->die_num; id++) { die = &chip->dies[id]; ret = hccs_create_die_dir(hdev, chip, die); if (ret) goto err; die->dir_created = true; } return 0; err: hccs_remove_chip_dir(chip); return ret; } static int hccs_create_topo_dirs(struct hccs_dev *hdev) { struct hccs_chip_info *chip; u8 id, k; int ret; for (id = 0; id < hdev->chip_num; id++) { chip = &hdev->chips[id]; ret = hccs_create_chip_dir(hdev, chip); if (ret) { dev_err(hdev->dev, "init chip%d dir failed!\n", id); goto err; } } return 0; err: for (k = 0; k < id; k++) hccs_remove_chip_dir(&hdev->chips[k]); return ret; } static int hccs_probe(struct platform_device *pdev) { struct acpi_device *acpi_dev; struct hccs_dev *hdev; int rc; if (acpi_disabled) { dev_err(&pdev->dev, "acpi is disabled.\n"); return -ENODEV; } acpi_dev = ACPI_COMPANION(&pdev->dev); if (!acpi_dev) return -ENODEV; hdev = devm_kzalloc(&pdev->dev, sizeof(*hdev), GFP_KERNEL); if (!hdev) return -ENOMEM; hdev->acpi_dev = acpi_dev; hdev->dev = &pdev->dev; platform_set_drvdata(pdev, hdev); mutex_init(&hdev->lock); rc = hccs_get_pcc_chan_id(hdev); if (rc) return rc; rc = hccs_register_pcc_channel(hdev); if (rc) return rc; rc = hccs_get_dev_caps(hdev); if (rc) goto unregister_pcc_chan; rc = hccs_get_hw_info(hdev); if (rc) goto unregister_pcc_chan; rc = hccs_create_topo_dirs(hdev); if (rc) goto unregister_pcc_chan; return 0; unregister_pcc_chan: hccs_unregister_pcc_channel(hdev); return rc; } static void hccs_remove(struct platform_device *pdev) { struct hccs_dev *hdev = platform_get_drvdata(pdev); hccs_remove_topo_dirs(hdev); hccs_unregister_pcc_channel(hdev); } static const struct acpi_device_id hccs_acpi_match[] = { { "HISI04B1"}, { ""}, }; MODULE_DEVICE_TABLE(acpi, hccs_acpi_match); static struct platform_driver hccs_driver = { .probe = hccs_probe, .remove_new = hccs_remove, .driver = { .name = "kunpeng_hccs", .acpi_match_table = hccs_acpi_match, }, }; module_platform_driver(hccs_driver); MODULE_DESCRIPTION("Kunpeng SoC HCCS driver"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Huisong Li <lihuisong@huawei.com>");
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