diff options
Diffstat (limited to 'target/linux/mediatek/files-4.19/drivers/net/phy/mtk/mt753x/mt753x_nl.c')
-rw-r--r-- | target/linux/mediatek/files-4.19/drivers/net/phy/mtk/mt753x/mt753x_nl.c | 380 |
1 files changed, 0 insertions, 380 deletions
diff --git a/target/linux/mediatek/files-4.19/drivers/net/phy/mtk/mt753x/mt753x_nl.c b/target/linux/mediatek/files-4.19/drivers/net/phy/mtk/mt753x/mt753x_nl.c deleted file mode 100644 index 54916243e7..0000000000 --- a/target/linux/mediatek/files-4.19/drivers/net/phy/mtk/mt753x/mt753x_nl.c +++ /dev/null @@ -1,380 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (c) 2018 MediaTek Inc. - * Author: Sirui Zhao <Sirui.Zhao@mediatek.com> - */ - -#include <linux/types.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/init.h> -#include <net/genetlink.h> - -#include "mt753x.h" -#include "mt753x_nl.h" - -struct mt753x_nl_cmd_item { - enum mt753x_cmd cmd; - bool require_dev; - int (*process)(struct genl_info *info, struct gsw_mt753x *gsw); - u32 nr_required_attrs; - const enum mt753x_attr *required_attrs; -}; - -static int mt753x_nl_response(struct sk_buff *skb, struct genl_info *info); - -static const struct nla_policy mt753x_nl_cmd_policy[] = { - [MT753X_ATTR_TYPE_MESG] = { .type = NLA_STRING }, - [MT753X_ATTR_TYPE_PHY] = { .type = NLA_S32 }, - [MT753X_ATTR_TYPE_REG] = { .type = NLA_S32 }, - [MT753X_ATTR_TYPE_VAL] = { .type = NLA_S32 }, - [MT753X_ATTR_TYPE_DEV_NAME] = { .type = NLA_S32 }, - [MT753X_ATTR_TYPE_DEV_ID] = { .type = NLA_S32 }, - [MT753X_ATTR_TYPE_DEVAD] = { .type = NLA_S32 }, -}; - -static const struct genl_ops mt753x_nl_ops[] = { - { - .cmd = MT753X_CMD_REQUEST, - .doit = mt753x_nl_response, - .policy = mt753x_nl_cmd_policy, - .flags = GENL_ADMIN_PERM, - }, { - .cmd = MT753X_CMD_READ, - .doit = mt753x_nl_response, - .policy = mt753x_nl_cmd_policy, - .flags = GENL_ADMIN_PERM, - }, { - .cmd = MT753X_CMD_WRITE, - .doit = mt753x_nl_response, - .policy = mt753x_nl_cmd_policy, - .flags = GENL_ADMIN_PERM, - }, -}; - -static struct genl_family mt753x_nl_family = { - .name = MT753X_GENL_NAME, - .version = MT753X_GENL_VERSION, - .maxattr = MT753X_NR_ATTR_TYPE, - .ops = mt753x_nl_ops, - .n_ops = ARRAY_SIZE(mt753x_nl_ops), -}; - -static int mt753x_nl_list_devs(char *buff, int size) -{ - struct gsw_mt753x *gsw; - int len, total = 0; - char buf[80]; - - memset(buff, 0, size); - - mt753x_lock_gsw(); - - list_for_each_entry(gsw, &mt753x_devs, list) { - len = snprintf(buf, sizeof(buf), - "id: %d, model: %s, node: %s\n", - gsw->id, gsw->name, gsw->dev->of_node->name); - strncat(buff, buf, size - total); - total += len; - } - - mt753x_put_gsw(); - - return total; -} - -static int mt753x_nl_prepare_reply(struct genl_info *info, u8 cmd, - struct sk_buff **skbp) -{ - struct sk_buff *msg; - void *reply; - - if (!info) - return -EINVAL; - - msg = genlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); - if (!msg) - return -ENOMEM; - - /* Construct send-back message header */ - reply = genlmsg_put(msg, info->snd_portid, info->snd_seq, - &mt753x_nl_family, 0, cmd); - if (!reply) { - nlmsg_free(msg); - return -EINVAL; - } - - *skbp = msg; - return 0; -} - -static int mt753x_nl_send_reply(struct sk_buff *skb, struct genl_info *info) -{ - struct genlmsghdr *genlhdr = nlmsg_data(nlmsg_hdr(skb)); - void *reply = genlmsg_data(genlhdr); - - /* Finalize a generic netlink message (update message header) */ - genlmsg_end(skb, reply); - - /* reply to a request */ - return genlmsg_reply(skb, info); -} - -static s32 mt753x_nl_get_s32(struct genl_info *info, enum mt753x_attr attr, - s32 defval) -{ - struct nlattr *na; - - na = info->attrs[attr]; - if (na) - return nla_get_s32(na); - - return defval; -} - -static int mt753x_nl_get_u32(struct genl_info *info, enum mt753x_attr attr, - u32 *val) -{ - struct nlattr *na; - - na = info->attrs[attr]; - if (na) { - *val = nla_get_u32(na); - return 0; - } - - return -1; -} - -static struct gsw_mt753x *mt753x_nl_parse_find_gsw(struct genl_info *info) -{ - struct gsw_mt753x *gsw; - struct nlattr *na; - int gsw_id; - - na = info->attrs[MT753X_ATTR_TYPE_DEV_ID]; - if (na) { - gsw_id = nla_get_s32(na); - if (gsw_id >= 0) - gsw = mt753x_get_gsw(gsw_id); - else - gsw = mt753x_get_first_gsw(); - } else { - gsw = mt753x_get_first_gsw(); - } - - return gsw; -} - -static int mt753x_nl_get_swdevs(struct genl_info *info, struct gsw_mt753x *gsw) -{ - struct sk_buff *rep_skb = NULL; - char dev_info[512]; - int ret; - - ret = mt753x_nl_list_devs(dev_info, sizeof(dev_info)); - if (!ret) { - pr_info("No switch registered\n"); - return -EINVAL; - } - - ret = mt753x_nl_prepare_reply(info, MT753X_CMD_REPLY, &rep_skb); - if (ret < 0) - goto err; - - ret = nla_put_string(rep_skb, MT753X_ATTR_TYPE_MESG, dev_info); - if (ret < 0) - goto err; - - return mt753x_nl_send_reply(rep_skb, info); - -err: - if (rep_skb) - nlmsg_free(rep_skb); - - return ret; -} - -static int mt753x_nl_reply_read(struct genl_info *info, struct gsw_mt753x *gsw) -{ - struct sk_buff *rep_skb = NULL; - s32 phy, devad, reg; - int value; - int ret = 0; - - phy = mt753x_nl_get_s32(info, MT753X_ATTR_TYPE_PHY, -1); - devad = mt753x_nl_get_s32(info, MT753X_ATTR_TYPE_DEVAD, -1); - reg = mt753x_nl_get_s32(info, MT753X_ATTR_TYPE_REG, -1); - - if (reg < 0) - goto err; - - ret = mt753x_nl_prepare_reply(info, MT753X_CMD_READ, &rep_skb); - if (ret < 0) - goto err; - - if (phy >= 0) { - if (devad < 0) - value = gsw->mii_read(gsw, phy, reg); - else - value = gsw->mmd_read(gsw, phy, devad, reg); - } else { - value = mt753x_reg_read(gsw, reg); - } - - ret = nla_put_s32(rep_skb, MT753X_ATTR_TYPE_REG, reg); - if (ret < 0) - goto err; - - ret = nla_put_s32(rep_skb, MT753X_ATTR_TYPE_VAL, value); - if (ret < 0) - goto err; - - return mt753x_nl_send_reply(rep_skb, info); - -err: - if (rep_skb) - nlmsg_free(rep_skb); - - return ret; -} - -static int mt753x_nl_reply_write(struct genl_info *info, struct gsw_mt753x *gsw) -{ - struct sk_buff *rep_skb = NULL; - s32 phy, devad, reg; - u32 value; - int ret = 0; - - phy = mt753x_nl_get_s32(info, MT753X_ATTR_TYPE_PHY, -1); - devad = mt753x_nl_get_s32(info, MT753X_ATTR_TYPE_DEVAD, -1); - reg = mt753x_nl_get_s32(info, MT753X_ATTR_TYPE_REG, -1); - - if (mt753x_nl_get_u32(info, MT753X_ATTR_TYPE_VAL, &value)) - goto err; - - if (reg < 0) - goto err; - - ret = mt753x_nl_prepare_reply(info, MT753X_CMD_WRITE, &rep_skb); - if (ret < 0) - goto err; - - if (phy >= 0) { - if (devad < 0) - gsw->mii_write(gsw, phy, reg, value); - else - gsw->mmd_write(gsw, phy, devad, reg, value); - } else { - mt753x_reg_write(gsw, reg, value); - } - - ret = nla_put_s32(rep_skb, MT753X_ATTR_TYPE_REG, reg); - if (ret < 0) - goto err; - - ret = nla_put_s32(rep_skb, MT753X_ATTR_TYPE_VAL, value); - if (ret < 0) - goto err; - - return mt753x_nl_send_reply(rep_skb, info); - -err: - if (rep_skb) - nlmsg_free(rep_skb); - - return ret; -} - -static const enum mt753x_attr mt753x_nl_cmd_read_attrs[] = { - MT753X_ATTR_TYPE_REG -}; - -static const enum mt753x_attr mt753x_nl_cmd_write_attrs[] = { - MT753X_ATTR_TYPE_REG, - MT753X_ATTR_TYPE_VAL -}; - -static const struct mt753x_nl_cmd_item mt753x_nl_cmds[] = { - { - .cmd = MT753X_CMD_REQUEST, - .require_dev = false, - .process = mt753x_nl_get_swdevs - }, { - .cmd = MT753X_CMD_READ, - .require_dev = true, - .process = mt753x_nl_reply_read, - .required_attrs = mt753x_nl_cmd_read_attrs, - .nr_required_attrs = ARRAY_SIZE(mt753x_nl_cmd_read_attrs), - }, { - .cmd = MT753X_CMD_WRITE, - .require_dev = true, - .process = mt753x_nl_reply_write, - .required_attrs = mt753x_nl_cmd_write_attrs, - .nr_required_attrs = ARRAY_SIZE(mt753x_nl_cmd_write_attrs), - } -}; - -static int mt753x_nl_response(struct sk_buff *skb, struct genl_info *info) -{ - struct genlmsghdr *hdr = nlmsg_data(info->nlhdr); - const struct mt753x_nl_cmd_item *cmditem = NULL; - struct gsw_mt753x *gsw = NULL; - u32 sat_req_attrs = 0; - int i, ret; - - for (i = 0; i < ARRAY_SIZE(mt753x_nl_cmds); i++) { - if (hdr->cmd == mt753x_nl_cmds[i].cmd) { - cmditem = &mt753x_nl_cmds[i]; - break; - } - } - - if (!cmditem) { - pr_info("mt753x-nl: unknown cmd %u\n", hdr->cmd); - return -EINVAL; - } - - for (i = 0; i < cmditem->nr_required_attrs; i++) { - if (info->attrs[cmditem->required_attrs[i]]) - sat_req_attrs++; - } - - if (sat_req_attrs != cmditem->nr_required_attrs) { - pr_info("mt753x-nl: missing required attr(s) for cmd %u\n", - hdr->cmd); - return -EINVAL; - } - - if (cmditem->require_dev) { - gsw = mt753x_nl_parse_find_gsw(info); - if (!gsw) { - pr_info("mt753x-nl: failed to find switch dev\n"); - return -EINVAL; - } - } - - ret = cmditem->process(info, gsw); - - mt753x_put_gsw(); - - return ret; -} - -int __init mt753x_nl_init(void) -{ - int ret; - - ret = genl_register_family(&mt753x_nl_family); - if (ret) { - pr_info("mt753x-nl: genl_register_family_with_ops failed\n"); - return ret; - } - - return 0; -} - -void __exit mt753x_nl_exit(void) -{ - genl_unregister_family(&mt753x_nl_family); -} |