From 1cbe974f816cf40bc0437ebabe26b453331fb0d9 Mon Sep 17 00:00:00 2001 From: Huisong Li Date: Wed, 28 Aug 2024 18:49:51 +0800 Subject: soc: hisilicon: kunpeng_hccs: Fix a PCC typo Fix a PCC typo. Signed-off-by: Huisong Li Reviewed-by: Jonathan Cameron Signed-off-by: Wei Xu --- drivers/soc/hisilicon/kunpeng_hccs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/soc/hisilicon/kunpeng_hccs.c') diff --git a/drivers/soc/hisilicon/kunpeng_hccs.c b/drivers/soc/hisilicon/kunpeng_hccs.c index e882a61636ec..c4a57328f22a 100644 --- a/drivers/soc/hisilicon/kunpeng_hccs.c +++ b/drivers/soc/hisilicon/kunpeng_hccs.c @@ -144,7 +144,7 @@ static int hccs_register_pcc_channel(struct hccs_dev *hdev) pcc_chan = pcc_mbox_request_channel(cl, hdev->chan_id); if (IS_ERR(pcc_chan)) { - dev_err(dev, "PPC channel request failed.\n"); + dev_err(dev, "PCC channel request failed.\n"); rc = -ENODEV; goto out; } -- cgit From 0c811bd2721d219bd104e0dc1fa76deee5e04ae4 Mon Sep 17 00:00:00 2001 From: Huisong Li Date: Wed, 28 Aug 2024 18:49:52 +0800 Subject: soc: hisilicon: kunpeng_hccs: Return failure on having not die or port information Driver is unavailable if all die number or all port number obtained from firmware are zero. Although this is unlikely, just to harden the code. Signed-off-by: Huisong Li Reviewed-by: Jonathan Cameron Signed-off-by: Wei Xu --- drivers/soc/hisilicon/kunpeng_hccs.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'drivers/soc/hisilicon/kunpeng_hccs.c') diff --git a/drivers/soc/hisilicon/kunpeng_hccs.c b/drivers/soc/hisilicon/kunpeng_hccs.c index c4a57328f22a..6e88f597f267 100644 --- a/drivers/soc/hisilicon/kunpeng_hccs.c +++ b/drivers/soc/hisilicon/kunpeng_hccs.c @@ -451,6 +451,7 @@ 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; + bool has_die_info = false; u8 i, j; int ret; @@ -459,6 +460,7 @@ static int hccs_query_all_die_info_on_platform(struct hccs_dev *hdev) if (!chip->die_num) continue; + has_die_info = true; chip->dies = devm_kzalloc(hdev->dev, chip->die_num * sizeof(struct hccs_die_info), GFP_KERNEL); @@ -480,7 +482,7 @@ static int hccs_query_all_die_info_on_platform(struct hccs_dev *hdev) } } - return 0; + return has_die_info ? 0 : -EINVAL; } static int hccs_get_bd_info(struct hccs_dev *hdev, u8 opcode, @@ -601,6 +603,7 @@ 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; + bool has_port_info = false; u8 i, j; int ret; @@ -611,6 +614,7 @@ static int hccs_query_all_port_info_on_platform(struct hccs_dev *hdev) if (!die->port_num) continue; + has_port_info = true; die->ports = devm_kzalloc(dev, die->port_num * sizeof(struct hccs_port_info), GFP_KERNEL); @@ -629,7 +633,7 @@ static int hccs_query_all_port_info_on_platform(struct hccs_dev *hdev) } } - return 0; + return has_port_info ? 0 : -EINVAL; } static int hccs_get_hw_info(struct hccs_dev *hdev) -- cgit From 3400c85f6400dc907d686d319faad25956ac4db1 Mon Sep 17 00:00:00 2001 From: Huisong Li Date: Wed, 28 Aug 2024 18:49:53 +0800 Subject: soc: hisilicon: kunpeng_hccs: Add the check for base address and size of shared memory If the shmem_base_addr from PCCT is zero, hccs_register_pcc_channel will return success. And then driver will access to illegal address when send PCC command. In addition, the size of shared memory used for communication between driver and platform is fixed, namely 64 Bytes which is unchangeable. So add the verification for hardening code. Signed-off-by: Huisong Li Reviewed-by: Jonathan Cameron Signed-off-by: Wei Xu --- drivers/soc/hisilicon/kunpeng_hccs.c | 24 +++++++++++++++--------- 1 file changed, 15 insertions(+), 9 deletions(-) (limited to 'drivers/soc/hisilicon/kunpeng_hccs.c') diff --git a/drivers/soc/hisilicon/kunpeng_hccs.c b/drivers/soc/hisilicon/kunpeng_hccs.c index 6e88f597f267..6055e5091cbd 100644 --- a/drivers/soc/hisilicon/kunpeng_hccs.c +++ b/drivers/soc/hisilicon/kunpeng_hccs.c @@ -170,15 +170,21 @@ static int hccs_register_pcc_channel(struct hccs_dev *hdev) 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-%u.\n", - hdev->chan_id); - rc = -ENOMEM; - goto err_mbx_channel_free; - } + if (!pcc_chan->shmem_base_addr || + pcc_chan->shmem_size != HCCS_PCC_SHARE_MEM_BYTES) { + dev_err(dev, "The base address or size (%llu) of PCC communication region is invalid.\n", + pcc_chan->shmem_size); + rc = -EINVAL; + goto err_mbx_channel_free; + } + + 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-%u.\n", + hdev->chan_id); + rc = -ENOMEM; + goto err_mbx_channel_free; } return 0; -- cgit From b51878373a81bda3a790fd936507fd0643ef98b3 Mon Sep 17 00:00:00 2001 From: Huisong Li Date: Wed, 28 Aug 2024 18:49:54 +0800 Subject: soc: hisilicon: kunpeng_hccs: Fix the 'lane_mode' field name in port info structure to 'max_lane_num' The lane mode of HCCS port is an information to user, and actually comes from the maximum lane number. But it is good and easy for driver to use the maximum lane number. So fix the 'lane_mode' field name in port info structure to 'max_lane_num'. Signed-off-by: Huisong Li Reviewed-by: Jonathan Cameron Signed-off-by: Wei Xu --- drivers/soc/hisilicon/kunpeng_hccs.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/soc/hisilicon/kunpeng_hccs.c') diff --git a/drivers/soc/hisilicon/kunpeng_hccs.c b/drivers/soc/hisilicon/kunpeng_hccs.c index 6055e5091cbd..418e4ee5d9e5 100644 --- a/drivers/soc/hisilicon/kunpeng_hccs.c +++ b/drivers/soc/hisilicon/kunpeng_hccs.c @@ -594,7 +594,7 @@ static int hccs_get_all_port_info_on_die(struct hccs_dev *hdev, 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->max_lane_num = attrs[i].max_lane_num; port->enable = attrs[i].enable; port->die = die; } @@ -839,7 +839,7 @@ static ssize_t lane_mode_show(struct kobject *kobj, struct kobj_attribute *attr, { const struct hccs_port_info *port = kobj_to_port_info(kobj); - return sysfs_emit(buf, "x%u\n", port->lane_mode); + return sysfs_emit(buf, "x%u\n", port->max_lane_num); } static struct kobj_attribute lane_mode_attr = __ATTR_RO(lane_mode); -- cgit From 23fe8112a23106e7dfc2b73fc52a60ea3eb64c20 Mon Sep 17 00:00:00 2001 From: Huisong Li Date: Wed, 28 Aug 2024 18:49:55 +0800 Subject: soc: hisilicon: kunpeng_hccs: Add used HCCS types sysfs Kunpeng_hccs driver supports multiple HCCS types used on one platform at the same time. In this case, to find which HCCS types are used on the platform the user needs to scan the type attribute of all ports, which is unfriendly to the user. In addition, the aggregated information is also useful for global control like the low power feature. So add the sysfs to show all HCCS types used on the platform. Signed-off-by: Huisong Li Reviewed-by: Jonathan Cameron Signed-off-by: Wei Xu --- drivers/soc/hisilicon/kunpeng_hccs.c | 102 ++++++++++++++++++++++++++++++++++- 1 file changed, 101 insertions(+), 1 deletion(-) (limited to 'drivers/soc/hisilicon/kunpeng_hccs.c') diff --git a/drivers/soc/hisilicon/kunpeng_hccs.c b/drivers/soc/hisilicon/kunpeng_hccs.c index 418e4ee5d9e5..623e7b7ed39a 100644 --- a/drivers/soc/hisilicon/kunpeng_hccs.c +++ b/drivers/soc/hisilicon/kunpeng_hccs.c @@ -21,11 +21,14 @@ * - if all enabled ports are in linked * - if all linked ports are in full lane * - CRC error count sum + * + * - Retrieve all HCCS types used on the platform. */ #include #include #include #include +#include #include @@ -53,6 +56,15 @@ static struct hccs_chip_info *kobj_to_chip_info(struct kobject *k) return container_of(k, struct hccs_chip_info, kobj); } +static struct hccs_dev *device_kobj_to_hccs_dev(struct kobject *k) +{ + struct device *dev = container_of(k, struct device, kobj); + struct platform_device *pdev = + container_of(dev, struct platform_device, dev); + + return platform_get_drvdata(pdev); +} + struct hccs_register_ctx { struct device *dev; u8 chan_id; @@ -670,6 +682,55 @@ static int hccs_get_hw_info(struct hccs_dev *hdev) return 0; } +static u16 hccs_calc_used_type_num(struct hccs_dev *hdev, + unsigned long *hccs_ver) +{ + struct hccs_chip_info *chip; + struct hccs_port_info *port; + struct hccs_die_info *die; + u16 used_type_num = 0; + u16 i, j, k; + + for (i = 0; i < hdev->chip_num; i++) { + chip = &hdev->chips[i]; + for (j = 0; j < chip->die_num; j++) { + die = &chip->dies[j]; + for (k = 0; k < die->port_num; k++) { + port = &die->ports[k]; + set_bit(port->port_type, hccs_ver); + } + } + } + + for_each_set_bit(i, hccs_ver, HCCS_IP_MAX + 1) + used_type_num++; + + return used_type_num; +} + +static int hccs_init_type_name_maps(struct hccs_dev *hdev) +{ + DECLARE_BITMAP(hccs_ver, HCCS_IP_MAX + 1) = {}; + unsigned int i; + u16 idx = 0; + + hdev->used_type_num = hccs_calc_used_type_num(hdev, hccs_ver); + hdev->type_name_maps = devm_kcalloc(hdev->dev, hdev->used_type_num, + sizeof(struct hccs_type_name_map), + GFP_KERNEL); + if (!hdev->type_name_maps) + return -ENOMEM; + + for_each_set_bit(i, hccs_ver, HCCS_IP_MAX + 1) { + hdev->type_name_maps[idx].type = i; + sprintf(hdev->type_name_maps[idx].name, + "%s%u", HCCS_IP_PREFIX, i); + idx++; + } + + 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) @@ -830,7 +891,7 @@ static ssize_t type_show(struct kobject *kobj, struct kobj_attribute *attr, { const struct hccs_port_info *port = kobj_to_port_info(kobj); - return sysfs_emit(buf, "HCCS-v%u\n", port->port_type); + return sysfs_emit(buf, "%s%u\n", HCCS_IP_PREFIX, port->port_type); } static struct kobj_attribute hccs_type_attr = __ATTR_RO(type); @@ -1134,6 +1195,33 @@ static const struct kobj_type hccs_chip_type = { .default_groups = hccs_chip_default_groups, }; + +static ssize_t used_types_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + struct hccs_dev *hdev = device_kobj_to_hccs_dev(kobj); + int len = 0; + u16 i; + + for (i = 0; i < hdev->used_type_num - 1; i++) + len += sysfs_emit(&buf[len], "%s ", hdev->type_name_maps[i].name); + len += sysfs_emit(&buf[len], "%s\n", hdev->type_name_maps[i].name); + + return len; +} +static struct kobj_attribute used_types_attr = + __ATTR(used_types, 0444, used_types_show, NULL); + +static void hccs_remove_misc_sysfs(struct hccs_dev *hdev) +{ + sysfs_remove_file(&hdev->dev->kobj, &used_types_attr.attr); +} + +static int hccs_add_misc_sysfs(struct hccs_dev *hdev) +{ + return sysfs_create_file(&hdev->dev->kobj, &used_types_attr.attr); +} + static void hccs_remove_die_dir(struct hccs_die_info *die) { struct hccs_port_info *port; @@ -1168,6 +1256,8 @@ static void hccs_remove_topo_dirs(struct hccs_dev *hdev) for (i = 0; i < hdev->chip_num; i++) hccs_remove_chip_dir(&hdev->chips[i]); + + hccs_remove_misc_sysfs(hdev); } static int hccs_create_hccs_dir(struct hccs_dev *hdev, @@ -1263,6 +1353,12 @@ static int hccs_create_topo_dirs(struct hccs_dev *hdev) } } + ret = hccs_add_misc_sysfs(hdev); + if (ret) { + dev_err(hdev->dev, "create misc sysfs interface failed, ret = %d\n", ret); + goto err; + } + return 0; err: for (k = 0; k < id; k++) @@ -1313,6 +1409,10 @@ static int hccs_probe(struct platform_device *pdev) if (rc) goto unregister_pcc_chan; + rc = hccs_init_type_name_maps(hdev); + if (rc) + goto unregister_pcc_chan; + rc = hccs_create_topo_dirs(hdev); if (rc) goto unregister_pcc_chan; -- cgit From e3c289c0916e2a3d7859a0cf851ea242fa23ec1e Mon Sep 17 00:00:00 2001 From: Huisong Li Date: Wed, 28 Aug 2024 18:49:56 +0800 Subject: soc: hisilicon: kunpeng_hccs: Support low power feature for the specified HCCS type Add the low power feature for the specified HCCS type by increasing and decreasing the used lane number of these HCCS ports on platform. Signed-off-by: Huisong Li Reviewed-by: Jonathan Cameron Signed-off-by: Wei Xu --- drivers/soc/hisilicon/kunpeng_hccs.c | 376 ++++++++++++++++++++++++++++++++++- 1 file changed, 375 insertions(+), 1 deletion(-) (limited to 'drivers/soc/hisilicon/kunpeng_hccs.c') diff --git a/drivers/soc/hisilicon/kunpeng_hccs.c b/drivers/soc/hisilicon/kunpeng_hccs.c index 623e7b7ed39a..0a45bbc8cb68 100644 --- a/drivers/soc/hisilicon/kunpeng_hccs.c +++ b/drivers/soc/hisilicon/kunpeng_hccs.c @@ -23,10 +23,18 @@ * - CRC error count sum * * - Retrieve all HCCS types used on the platform. + * + * - Support low power feature for all specified HCCS type ports, and + * provide the following interface: + * - query HCCS types supported increasing and decreasing lane number. + * - decrease lane number of all specified HCCS type ports on idle state. + * - increase lane number of all specified HCCS type ports. */ #include +#include #include #include +#include #include #include @@ -65,6 +73,33 @@ static struct hccs_dev *device_kobj_to_hccs_dev(struct kobject *k) return platform_get_drvdata(pdev); } +static char *hccs_port_type_to_name(struct hccs_dev *hdev, u8 type) +{ + u16 i; + + for (i = 0; i < hdev->used_type_num; i++) { + if (hdev->type_name_maps[i].type == type) + return hdev->type_name_maps[i].name; + } + + return NULL; +} + +static int hccs_name_to_port_type(struct hccs_dev *hdev, + const char *name, u8 *type) +{ + u16 i; + + for (i = 0; i < hdev->used_type_num; i++) { + if (strcmp(hdev->type_name_maps[i].name, name) == 0) { + *type = hdev->type_name_maps[i].type; + return 0; + } + } + + return -EINVAL; +} + struct hccs_register_ctx { struct device *dev; u8 chan_id; @@ -1195,6 +1230,306 @@ static const struct kobj_type hccs_chip_type = { .default_groups = hccs_chip_default_groups, }; +static int hccs_parse_pm_port_type(struct hccs_dev *hdev, const char *buf, + u8 *port_type) +{ + char hccs_name[HCCS_NAME_MAX_LEN + 1] = ""; + u8 type; + int ret; + + ret = sscanf(buf, "%" __stringify(HCCS_NAME_MAX_LEN) "s", hccs_name); + if (ret != 1) + return -EINVAL; + + ret = hccs_name_to_port_type(hdev, hccs_name, &type); + if (ret) { + dev_dbg(hdev->dev, "input invalid, please get the available types from 'used_types'.\n"); + return ret; + } + + if (type == HCCS_V2 && hdev->caps & HCCS_CAPS_HCCS_V2_PM) { + *port_type = type; + return 0; + } + + dev_dbg(hdev->dev, "%s doesn't support for increasing and decreasing lane.\n", + hccs_name); + + return -EOPNOTSUPP; +} + +static int hccs_query_port_idle_status(struct hccs_dev *hdev, + struct hccs_port_info *port, u8 *idle) +{ + 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_IDLE_STATUS, &desc); + if (ret) { + dev_err(hdev->dev, + "get port idle status failed, ret = %d.\n", ret); + return ret; + } + + *idle = *((u8 *)desc.rsp.data); + return 0; +} + +static int hccs_get_all_spec_port_idle_sta(struct hccs_dev *hdev, u8 port_type, + bool *all_idle) +{ + struct hccs_chip_info *chip; + struct hccs_port_info *port; + struct hccs_die_info *die; + int ret = 0; + u8 i, j, k; + u8 idle; + + *all_idle = false; + for (i = 0; i < hdev->chip_num; i++) { + chip = &hdev->chips[i]; + for (j = 0; j < chip->die_num; j++) { + die = &chip->dies[j]; + for (k = 0; k < die->port_num; k++) { + port = &die->ports[k]; + if (port->port_type != port_type) + continue; + ret = hccs_query_port_idle_status(hdev, port, + &idle); + if (ret) { + dev_err(hdev->dev, + "hccs%u on chip%u/die%u get idle status failed, ret = %d.\n", + k, i, j, ret); + return ret; + } else if (idle == 0) { + dev_info(hdev->dev, "hccs%u on chip%u/die%u is busy.\n", + k, i, j); + return 0; + } + } + } + } + *all_idle = true; + + return 0; +} + +static int hccs_get_all_spec_port_full_lane_sta(struct hccs_dev *hdev, + u8 port_type, bool *full_lane) +{ + struct hccs_link_status status = {0}; + struct hccs_chip_info *chip; + struct hccs_port_info *port; + struct hccs_die_info *die; + u8 i, j, k; + int ret; + + *full_lane = false; + for (i = 0; i < hdev->chip_num; i++) { + chip = &hdev->chips[i]; + for (j = 0; j < chip->die_num; j++) { + die = &chip->dies[j]; + for (k = 0; k < die->port_num; k++) { + port = &die->ports[k]; + if (port->port_type != port_type) + continue; + ret = hccs_query_port_link_status(hdev, port, + &status); + if (ret) + return ret; + if (status.lane_num != port->max_lane_num) + return 0; + } + } + } + *full_lane = true; + + return 0; +} + +static int hccs_prepare_inc_lane(struct hccs_dev *hdev, u8 type) +{ + struct hccs_inc_lane_req_param *req_param; + struct hccs_desc desc; + int ret; + + hccs_init_req_desc(&desc); + req_param = (struct hccs_inc_lane_req_param *)desc.req.data; + req_param->port_type = type; + req_param->opt_type = HCCS_PREPARE_INC_LANE; + ret = hccs_pcc_cmd_send(hdev, HCCS_PM_INC_LANE, &desc); + if (ret) + dev_err(hdev->dev, "prepare for increasing lane failed, ret = %d.\n", + ret); + + return ret; +} + +static int hccs_wait_serdes_adapt_completed(struct hccs_dev *hdev, u8 type) +{ +#define HCCS_MAX_WAIT_CNT_FOR_ADAPT 10 +#define HCCS_QUERY_ADAPT_RES_DELAY_MS 100 +#define HCCS_SERDES_ADAPT_OK 0 + + struct hccs_inc_lane_req_param *req_param; + u8 wait_cnt = HCCS_MAX_WAIT_CNT_FOR_ADAPT; + struct hccs_desc desc; + u8 adapt_res; + int ret; + + do { + hccs_init_req_desc(&desc); + req_param = (struct hccs_inc_lane_req_param *)desc.req.data; + req_param->port_type = type; + req_param->opt_type = HCCS_GET_ADAPT_RES; + ret = hccs_pcc_cmd_send(hdev, HCCS_PM_INC_LANE, &desc); + if (ret) { + dev_err(hdev->dev, "query adapting result failed, ret = %d.\n", + ret); + return ret; + } + adapt_res = *((u8 *)&desc.rsp.data); + if (adapt_res == HCCS_SERDES_ADAPT_OK) + return 0; + + msleep(HCCS_QUERY_ADAPT_RES_DELAY_MS); + } while (--wait_cnt); + + dev_err(hdev->dev, "wait for adapting completed timeout.\n"); + + return -ETIMEDOUT; +} + +static int hccs_start_hpcs_retraining(struct hccs_dev *hdev, u8 type) +{ + struct hccs_inc_lane_req_param *req_param; + struct hccs_desc desc; + int ret; + + hccs_init_req_desc(&desc); + req_param = (struct hccs_inc_lane_req_param *)desc.req.data; + req_param->port_type = type; + req_param->opt_type = HCCS_START_RETRAINING; + ret = hccs_pcc_cmd_send(hdev, HCCS_PM_INC_LANE, &desc); + if (ret) + dev_err(hdev->dev, "start hpcs retraining failed, ret = %d.\n", + ret); + + return ret; +} + +static int hccs_start_inc_lane(struct hccs_dev *hdev, u8 type) +{ + int ret; + + ret = hccs_prepare_inc_lane(hdev, type); + if (ret) + return ret; + + ret = hccs_wait_serdes_adapt_completed(hdev, type); + if (ret) + return ret; + + return hccs_start_hpcs_retraining(hdev, type); +} + +static int hccs_start_dec_lane(struct hccs_dev *hdev, u8 type) +{ + struct hccs_desc desc; + u8 *port_type; + int ret; + + hccs_init_req_desc(&desc); + port_type = (u8 *)desc.req.data; + *port_type = type; + ret = hccs_pcc_cmd_send(hdev, HCCS_PM_DEC_LANE, &desc); + if (ret) + dev_err(hdev->dev, "start to decrease lane failed, ret = %d.\n", + ret); + + return ret; +} + +static ssize_t dec_lane_of_type_store(struct kobject *kobj, struct kobj_attribute *attr, + const char *buf, size_t count) +{ + struct hccs_dev *hdev = device_kobj_to_hccs_dev(kobj); + bool all_in_idle; + u8 port_type; + int ret; + + ret = hccs_parse_pm_port_type(hdev, buf, &port_type); + if (ret) + return ret; + + mutex_lock(&hdev->lock); + ret = hccs_get_all_spec_port_idle_sta(hdev, port_type, &all_in_idle); + if (ret) + goto out; + if (!all_in_idle) { + ret = -EBUSY; + dev_err(hdev->dev, "please don't decrese lanes on high load with %s, ret = %d.\n", + hccs_port_type_to_name(hdev, port_type), ret); + goto out; + } + + ret = hccs_start_dec_lane(hdev, port_type); +out: + mutex_unlock(&hdev->lock); + + return ret == 0 ? count : ret; +} +static struct kobj_attribute dec_lane_of_type_attr = + __ATTR(dec_lane_of_type, 0200, NULL, dec_lane_of_type_store); + +static ssize_t inc_lane_of_type_store(struct kobject *kobj, struct kobj_attribute *attr, + const char *buf, size_t count) +{ + struct hccs_dev *hdev = device_kobj_to_hccs_dev(kobj); + bool full_lane; + u8 port_type; + int ret; + + ret = hccs_parse_pm_port_type(hdev, buf, &port_type); + if (ret) + return ret; + + mutex_lock(&hdev->lock); + ret = hccs_get_all_spec_port_full_lane_sta(hdev, port_type, &full_lane); + if (ret || full_lane) + goto out; + + ret = hccs_start_inc_lane(hdev, port_type); +out: + mutex_unlock(&hdev->lock); + return ret == 0 ? count : ret; +} +static struct kobj_attribute inc_lane_of_type_attr = + __ATTR(inc_lane_of_type, 0200, NULL, inc_lane_of_type_store); + +static ssize_t available_inc_dec_lane_types_show(struct kobject *kobj, + struct kobj_attribute *attr, + char *buf) +{ + struct hccs_dev *hdev = device_kobj_to_hccs_dev(kobj); + + if (hdev->caps & HCCS_CAPS_HCCS_V2_PM) + return sysfs_emit(buf, "%s\n", + hccs_port_type_to_name(hdev, HCCS_V2)); + + return -EINVAL; +} +static struct kobj_attribute available_inc_dec_lane_types_attr = + __ATTR(available_inc_dec_lane_types, 0444, + available_inc_dec_lane_types_show, NULL); static ssize_t used_types_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) @@ -1215,11 +1550,50 @@ static struct kobj_attribute used_types_attr = static void hccs_remove_misc_sysfs(struct hccs_dev *hdev) { sysfs_remove_file(&hdev->dev->kobj, &used_types_attr.attr); + + if (!(hdev->caps & HCCS_CAPS_HCCS_V2_PM)) + return; + + sysfs_remove_file(&hdev->dev->kobj, + &available_inc_dec_lane_types_attr.attr); + sysfs_remove_file(&hdev->dev->kobj, &dec_lane_of_type_attr.attr); + sysfs_remove_file(&hdev->dev->kobj, &inc_lane_of_type_attr.attr); } static int hccs_add_misc_sysfs(struct hccs_dev *hdev) { - return sysfs_create_file(&hdev->dev->kobj, &used_types_attr.attr); + int ret; + + ret = sysfs_create_file(&hdev->dev->kobj, &used_types_attr.attr); + if (ret) + return ret; + + if (!(hdev->caps & HCCS_CAPS_HCCS_V2_PM)) + return 0; + + ret = sysfs_create_file(&hdev->dev->kobj, + &available_inc_dec_lane_types_attr.attr); + if (ret) + goto used_types_remove; + + ret = sysfs_create_file(&hdev->dev->kobj, &dec_lane_of_type_attr.attr); + if (ret) + goto inc_dec_lane_types_remove; + + ret = sysfs_create_file(&hdev->dev->kobj, &inc_lane_of_type_attr.attr); + if (ret) + goto dec_lane_of_type_remove; + + return 0; + +dec_lane_of_type_remove: + sysfs_remove_file(&hdev->dev->kobj, &dec_lane_of_type_attr.attr); +inc_dec_lane_types_remove: + sysfs_remove_file(&hdev->dev->kobj, + &available_inc_dec_lane_types_attr.attr); +used_types_remove: + sysfs_remove_file(&hdev->dev->kobj, &used_types_attr.attr); + return ret; } static void hccs_remove_die_dir(struct hccs_die_info *die) -- cgit