diff options
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/mt7921/mcu.c')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt7921/mcu.c | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c index da12d0ae0835..67bf92969a7b 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c @@ -2,14 +2,20 @@ /* Copyright (C) 2020 MediaTek Inc. */ #include <linux/fs.h> +#include <linux/firmware.h> #include "mt7921.h" #include "mt7921_trace.h" +#include "eeprom.h" #include "mcu.h" #include "mac.h" #define MT_STA_BFER BIT(0) #define MT_STA_BFEE BIT(1) +static bool mt7921_disable_clc; +module_param_named(disable_clc, mt7921_disable_clc, bool, 0644); +MODULE_PARM_DESC(disable_clc, "disable CLC support"); + static int mt7921_mcu_parse_eeprom(struct mt76_dev *dev, struct sk_buff *skb) { @@ -84,6 +90,27 @@ int mt7921_mcu_parse_response(struct mt76_dev *mdev, int cmd, } EXPORT_SYMBOL_GPL(mt7921_mcu_parse_response); +static int mt7921_mcu_read_eeprom(struct mt7921_dev *dev, u32 offset, u8 *val) +{ + struct mt7921_mcu_eeprom_info *res, req = { + .addr = cpu_to_le32(round_down(offset, + MT7921_EEPROM_BLOCK_SIZE)), + }; + struct sk_buff *skb; + int ret; + + ret = mt76_mcu_send_and_get_msg(&dev->mt76, MCU_EXT_QUERY(EFUSE_ACCESS), + &req, sizeof(req), true, &skb); + if (ret) + return ret; + + res = (struct mt7921_mcu_eeprom_info *)skb->data; + *val = res->data[offset % MT7921_EEPROM_BLOCK_SIZE]; + dev_kfree_skb(skb); + + return 0; +} + #ifdef CONFIG_PM static int @@ -354,6 +381,90 @@ static char *mt7921_ram_name(struct mt7921_dev *dev) return ret; } +static int mt7921_load_clc(struct mt7921_dev *dev, const char *fw_name) +{ + const struct mt76_connac2_fw_trailer *hdr; + const struct mt76_connac2_fw_region *region; + const struct mt7921_clc *clc; + struct mt76_dev *mdev = &dev->mt76; + struct mt7921_phy *phy = &dev->phy; + const struct firmware *fw; + int ret, i, len, offset = 0; + u8 *clc_base = NULL, hw_encap = 0; + + if (mt7921_disable_clc || + mt76_is_usb(&dev->mt76)) + return 0; + + if (mt76_is_mmio(&dev->mt76)) { + ret = mt7921_mcu_read_eeprom(dev, MT_EE_HW_TYPE, &hw_encap); + if (ret) + return ret; + hw_encap = u8_get_bits(hw_encap, MT_EE_HW_TYPE_ENCAP); + } + + ret = request_firmware(&fw, fw_name, mdev->dev); + if (ret) + return ret; + + if (!fw || !fw->data || fw->size < sizeof(*hdr)) { + dev_err(mdev->dev, "Invalid firmware\n"); + ret = -EINVAL; + goto out; + } + + hdr = (const void *)(fw->data + fw->size - sizeof(*hdr)); + for (i = 0; i < hdr->n_region; i++) { + region = (const void *)((const u8 *)hdr - + (hdr->n_region - i) * sizeof(*region)); + len = le32_to_cpu(region->len); + + /* check if we have valid buffer size */ + if (offset + len > fw->size) { + dev_err(mdev->dev, "Invalid firmware region\n"); + ret = -EINVAL; + goto out; + } + + if ((region->feature_set & FW_FEATURE_NON_DL) && + region->type == FW_TYPE_CLC) { + clc_base = (u8 *)(fw->data + offset); + break; + } + offset += len; + } + + if (!clc_base) + goto out; + + for (offset = 0; offset < len; offset += le32_to_cpu(clc->len)) { + clc = (const struct mt7921_clc *)(clc_base + offset); + + /* do not init buf again if chip reset triggered */ + if (phy->clc[clc->idx]) + continue; + + /* header content sanity */ + if (clc->idx == MT7921_CLC_POWER && + u8_get_bits(clc->type, MT_EE_HW_TYPE_ENCAP) != hw_encap) + continue; + + phy->clc[clc->idx] = devm_kmemdup(mdev->dev, clc, + le32_to_cpu(clc->len), + GFP_KERNEL); + + if (!phy->clc[clc->idx]) { + ret = -ENOMEM; + goto out; + } + } + ret = mt7921_mcu_set_clc(dev, "00", ENVIRON_INDOOR); +out: + release_firmware(fw); + + return ret; +} + static int mt7921_load_firmware(struct mt7921_dev *dev) { int ret; @@ -423,6 +534,10 @@ int mt7921_run_firmware(struct mt7921_dev *dev) return err; set_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state); + err = mt7921_load_clc(dev, mt7921_ram_name(dev)); + if (err) + return err; + return mt7921_mcu_fw_log_2_host(dev, 1); } EXPORT_SYMBOL_GPL(mt7921_run_firmware); @@ -930,3 +1045,86 @@ mt7921_mcu_uni_add_beacon_offload(struct mt7921_dev *dev, return mt76_mcu_send_msg(&dev->mt76, MCU_UNI_CMD(BSS_INFO_UPDATE), &req, sizeof(req), true); } + +static +int __mt7921_mcu_set_clc(struct mt7921_dev *dev, u8 *alpha2, + enum environment_cap env_cap, + struct mt7921_clc *clc, + u8 idx) +{ + struct sk_buff *skb; + struct { + u8 ver; + u8 pad0; + __le16 len; + u8 idx; + u8 env; + u8 pad1[2]; + u8 alpha2[2]; + u8 type[2]; + u8 rsvd[64]; + } __packed req = { + .idx = idx, + .env = env_cap, + }; + int ret, valid_cnt = 0; + u8 i, *pos; + + if (!clc) + return 0; + + pos = clc->data; + for (i = 0; i < clc->nr_country; i++) { + struct mt7921_clc_rule *rule = (struct mt7921_clc_rule *)pos; + u16 len = le16_to_cpu(rule->len); + + pos += len + sizeof(*rule); + if (rule->alpha2[0] != alpha2[0] || + rule->alpha2[1] != alpha2[1]) + continue; + + memcpy(req.alpha2, rule->alpha2, 2); + memcpy(req.type, rule->type, 2); + + req.len = cpu_to_le16(sizeof(req) + len); + skb = __mt76_mcu_msg_alloc(&dev->mt76, &req, + le16_to_cpu(req.len), + sizeof(req), GFP_KERNEL); + if (!skb) + return -ENOMEM; + skb_put_data(skb, rule->data, len); + + ret = mt76_mcu_skb_send_msg(&dev->mt76, skb, + MCU_CE_CMD(SET_CLC), false); + if (ret < 0) + return ret; + valid_cnt++; + } + + if (!valid_cnt) + return -ENOENT; + + return 0; +} + +int mt7921_mcu_set_clc(struct mt7921_dev *dev, u8 *alpha2, + enum environment_cap env_cap) +{ + struct mt7921_phy *phy = (struct mt7921_phy *)&dev->phy; + int i, ret; + + /* submit all clc config */ + for (i = 0; i < ARRAY_SIZE(phy->clc); i++) { + ret = __mt7921_mcu_set_clc(dev, alpha2, env_cap, + phy->clc[i], i); + + /* If no country found, set "00" as default */ + if (ret == -ENOENT) + ret = __mt7921_mcu_set_clc(dev, "00", + ENVIRON_INDOOR, + phy->clc[i], i); + if (ret < 0) + return ret; + } + return 0; +} |