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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/net/wireless/realtek/rtw89/efuse.c | |
parent | Initial commit. (diff) | |
download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/net/wireless/realtek/rtw89/efuse.c')
-rw-r--r-- | drivers/net/wireless/realtek/rtw89/efuse.c | 351 |
1 files changed, 351 insertions, 0 deletions
diff --git a/drivers/net/wireless/realtek/rtw89/efuse.c b/drivers/net/wireless/realtek/rtw89/efuse.c new file mode 100644 index 0000000000..2aaf4d013e --- /dev/null +++ b/drivers/net/wireless/realtek/rtw89/efuse.c @@ -0,0 +1,351 @@ +// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause +/* Copyright(c) 2019-2020 Realtek Corporation + */ + +#include "debug.h" +#include "efuse.h" +#include "mac.h" +#include "reg.h" + +#define EF_FV_OFSET 0x5ea +#define EF_CV_MASK GENMASK(7, 4) +#define EF_CV_INV 15 + +enum rtw89_efuse_bank { + RTW89_EFUSE_BANK_WIFI, + RTW89_EFUSE_BANK_BT, +}; + +static int rtw89_switch_efuse_bank(struct rtw89_dev *rtwdev, + enum rtw89_efuse_bank bank) +{ + u8 val; + + if (rtwdev->chip->chip_id != RTL8852A) + return 0; + + val = rtw89_read32_mask(rtwdev, R_AX_EFUSE_CTRL_1, + B_AX_EF_CELL_SEL_MASK); + if (bank == val) + return 0; + + rtw89_write32_mask(rtwdev, R_AX_EFUSE_CTRL_1, B_AX_EF_CELL_SEL_MASK, + bank); + + val = rtw89_read32_mask(rtwdev, R_AX_EFUSE_CTRL_1, + B_AX_EF_CELL_SEL_MASK); + if (bank == val) + return 0; + + return -EBUSY; +} + +static void rtw89_enable_otp_burst_mode(struct rtw89_dev *rtwdev, bool en) +{ + if (en) + rtw89_write32_set(rtwdev, R_AX_EFUSE_CTRL_1_V1, B_AX_EF_BURST); + else + rtw89_write32_clr(rtwdev, R_AX_EFUSE_CTRL_1_V1, B_AX_EF_BURST); +} + +static void rtw89_enable_efuse_pwr_cut_ddv(struct rtw89_dev *rtwdev) +{ + enum rtw89_core_chip_id chip_id = rtwdev->chip->chip_id; + struct rtw89_hal *hal = &rtwdev->hal; + + if (chip_id == RTL8852A) + return; + + rtw89_write8_set(rtwdev, R_AX_PMC_DBG_CTRL2, B_AX_SYSON_DIS_PMCR_AX_WRMSK); + rtw89_write16_set(rtwdev, R_AX_SYS_ISO_CTRL, B_AX_PWC_EV2EF_B14); + + fsleep(1000); + + rtw89_write16_set(rtwdev, R_AX_SYS_ISO_CTRL, B_AX_PWC_EV2EF_B15); + rtw89_write16_clr(rtwdev, R_AX_SYS_ISO_CTRL, B_AX_ISO_EB2CORE); + if (chip_id == RTL8852B && hal->cv == CHIP_CAV) + rtw89_enable_otp_burst_mode(rtwdev, true); +} + +static void rtw89_disable_efuse_pwr_cut_ddv(struct rtw89_dev *rtwdev) +{ + enum rtw89_core_chip_id chip_id = rtwdev->chip->chip_id; + struct rtw89_hal *hal = &rtwdev->hal; + + if (chip_id == RTL8852A) + return; + + if (chip_id == RTL8852B && hal->cv == CHIP_CAV) + rtw89_enable_otp_burst_mode(rtwdev, false); + + rtw89_write16_set(rtwdev, R_AX_SYS_ISO_CTRL, B_AX_ISO_EB2CORE); + rtw89_write16_clr(rtwdev, R_AX_SYS_ISO_CTRL, B_AX_PWC_EV2EF_B15); + + fsleep(1000); + + rtw89_write16_clr(rtwdev, R_AX_SYS_ISO_CTRL, B_AX_PWC_EV2EF_B14); + rtw89_write8_clr(rtwdev, R_AX_PMC_DBG_CTRL2, B_AX_SYSON_DIS_PMCR_AX_WRMSK); +} + +static int rtw89_dump_physical_efuse_map_ddv(struct rtw89_dev *rtwdev, u8 *map, + u32 dump_addr, u32 dump_size) +{ + u32 efuse_ctl; + u32 addr; + int ret; + + rtw89_enable_efuse_pwr_cut_ddv(rtwdev); + + for (addr = dump_addr; addr < dump_addr + dump_size; addr++) { + efuse_ctl = u32_encode_bits(addr, B_AX_EF_ADDR_MASK); + rtw89_write32(rtwdev, R_AX_EFUSE_CTRL, efuse_ctl & ~B_AX_EF_RDY); + + ret = read_poll_timeout_atomic(rtw89_read32, efuse_ctl, + efuse_ctl & B_AX_EF_RDY, 1, 1000000, + true, rtwdev, R_AX_EFUSE_CTRL); + if (ret) + return -EBUSY; + + *map++ = (u8)(efuse_ctl & 0xff); + } + + rtw89_disable_efuse_pwr_cut_ddv(rtwdev); + + return 0; +} + +static int rtw89_dump_physical_efuse_map_dav(struct rtw89_dev *rtwdev, u8 *map, + u32 dump_addr, u32 dump_size) +{ + u32 addr; + u8 val8; + int err; + int ret; + + for (addr = dump_addr; addr < dump_addr + dump_size; addr++) { + ret = rtw89_mac_write_xtal_si(rtwdev, XTAL_SI_CTRL, 0x40, FULL_BIT_MASK); + if (ret) + return ret; + ret = rtw89_mac_write_xtal_si(rtwdev, XTAL_SI_LOW_ADDR, + addr & 0xff, XTAL_SI_LOW_ADDR_MASK); + if (ret) + return ret; + ret = rtw89_mac_write_xtal_si(rtwdev, XTAL_SI_CTRL, addr >> 8, + XTAL_SI_HIGH_ADDR_MASK); + if (ret) + return ret; + ret = rtw89_mac_write_xtal_si(rtwdev, XTAL_SI_CTRL, 0, + XTAL_SI_MODE_SEL_MASK); + if (ret) + return ret; + + ret = read_poll_timeout_atomic(rtw89_mac_read_xtal_si, err, + !err && (val8 & XTAL_SI_RDY), + 1, 10000, false, + rtwdev, XTAL_SI_CTRL, &val8); + if (ret) { + rtw89_warn(rtwdev, "failed to read dav efuse\n"); + return ret; + } + + ret = rtw89_mac_read_xtal_si(rtwdev, XTAL_SI_READ_VAL, &val8); + if (ret) + return ret; + *map++ = val8; + } + + return 0; +} + +static int rtw89_dump_physical_efuse_map(struct rtw89_dev *rtwdev, u8 *map, + u32 dump_addr, u32 dump_size, bool dav) +{ + int ret; + + if (!map || dump_size == 0) + return 0; + + rtw89_switch_efuse_bank(rtwdev, RTW89_EFUSE_BANK_WIFI); + + if (dav) { + ret = rtw89_dump_physical_efuse_map_dav(rtwdev, map, dump_addr, dump_size); + if (ret) + return ret; + } else { + ret = rtw89_dump_physical_efuse_map_ddv(rtwdev, map, dump_addr, dump_size); + if (ret) + return ret; + } + + return 0; +} + +#define invalid_efuse_header(hdr1, hdr2) \ + ((hdr1) == 0xff || (hdr2) == 0xff) +#define invalid_efuse_content(word_en, i) \ + (((word_en) & BIT(i)) != 0x0) +#define get_efuse_blk_idx(hdr1, hdr2) \ + ((((hdr2) & 0xf0) >> 4) | (((hdr1) & 0x0f) << 4)) +#define block_idx_to_logical_idx(blk_idx, i) \ + (((blk_idx) << 3) + ((i) << 1)) +static int rtw89_dump_logical_efuse_map(struct rtw89_dev *rtwdev, u8 *phy_map, + u8 *log_map) +{ + u32 physical_size = rtwdev->chip->physical_efuse_size; + u32 logical_size = rtwdev->chip->logical_efuse_size; + u8 sec_ctrl_size = rtwdev->chip->sec_ctrl_efuse_size; + u32 phy_idx = sec_ctrl_size; + u32 log_idx; + u8 hdr1, hdr2; + u8 blk_idx; + u8 word_en; + int i; + + if (!phy_map) + return 0; + + while (phy_idx < physical_size - sec_ctrl_size) { + hdr1 = phy_map[phy_idx]; + hdr2 = phy_map[phy_idx + 1]; + if (invalid_efuse_header(hdr1, hdr2)) + break; + + blk_idx = get_efuse_blk_idx(hdr1, hdr2); + word_en = hdr2 & 0xf; + phy_idx += 2; + + for (i = 0; i < 4; i++) { + if (invalid_efuse_content(word_en, i)) + continue; + + log_idx = block_idx_to_logical_idx(blk_idx, i); + if (phy_idx + 1 > physical_size - sec_ctrl_size - 1 || + log_idx + 1 > logical_size) + return -EINVAL; + + log_map[log_idx] = phy_map[phy_idx]; + log_map[log_idx + 1] = phy_map[phy_idx + 1]; + phy_idx += 2; + } + } + return 0; +} + +int rtw89_parse_efuse_map(struct rtw89_dev *rtwdev) +{ + u32 phy_size = rtwdev->chip->physical_efuse_size; + u32 log_size = rtwdev->chip->logical_efuse_size; + u32 dav_phy_size = rtwdev->chip->dav_phy_efuse_size; + u32 dav_log_size = rtwdev->chip->dav_log_efuse_size; + u32 full_log_size = log_size + dav_log_size; + u8 *phy_map = NULL; + u8 *log_map = NULL; + u8 *dav_phy_map = NULL; + u8 *dav_log_map = NULL; + int ret; + + if (rtw89_read16(rtwdev, R_AX_SYS_WL_EFUSE_CTRL) & B_AX_AUTOLOAD_SUS) + rtwdev->efuse.valid = true; + else + rtw89_warn(rtwdev, "failed to check efuse autoload\n"); + + phy_map = kmalloc(phy_size, GFP_KERNEL); + log_map = kmalloc(full_log_size, GFP_KERNEL); + if (dav_phy_size && dav_log_size) { + dav_phy_map = kmalloc(dav_phy_size, GFP_KERNEL); + dav_log_map = log_map + log_size; + } + + if (!phy_map || !log_map || (dav_phy_size && !dav_phy_map)) { + ret = -ENOMEM; + goto out_free; + } + + ret = rtw89_dump_physical_efuse_map(rtwdev, phy_map, 0, phy_size, false); + if (ret) { + rtw89_warn(rtwdev, "failed to dump efuse physical map\n"); + goto out_free; + } + ret = rtw89_dump_physical_efuse_map(rtwdev, dav_phy_map, 0, dav_phy_size, true); + if (ret) { + rtw89_warn(rtwdev, "failed to dump efuse dav physical map\n"); + goto out_free; + } + + memset(log_map, 0xff, full_log_size); + ret = rtw89_dump_logical_efuse_map(rtwdev, phy_map, log_map); + if (ret) { + rtw89_warn(rtwdev, "failed to dump efuse logical map\n"); + goto out_free; + } + ret = rtw89_dump_logical_efuse_map(rtwdev, dav_phy_map, dav_log_map); + if (ret) { + rtw89_warn(rtwdev, "failed to dump efuse dav logical map\n"); + goto out_free; + } + + rtw89_hex_dump(rtwdev, RTW89_DBG_FW, "log_map: ", log_map, full_log_size); + + ret = rtwdev->chip->ops->read_efuse(rtwdev, log_map); + if (ret) { + rtw89_warn(rtwdev, "failed to read efuse map\n"); + goto out_free; + } + +out_free: + kfree(dav_phy_map); + kfree(log_map); + kfree(phy_map); + + return ret; +} + +int rtw89_parse_phycap_map(struct rtw89_dev *rtwdev) +{ + u32 phycap_addr = rtwdev->chip->phycap_addr; + u32 phycap_size = rtwdev->chip->phycap_size; + u8 *phycap_map = NULL; + int ret = 0; + + if (!phycap_size) + return 0; + + phycap_map = kmalloc(phycap_size, GFP_KERNEL); + if (!phycap_map) + return -ENOMEM; + + ret = rtw89_dump_physical_efuse_map(rtwdev, phycap_map, + phycap_addr, phycap_size, false); + if (ret) { + rtw89_warn(rtwdev, "failed to dump phycap map\n"); + goto out_free; + } + + ret = rtwdev->chip->ops->read_phycap(rtwdev, phycap_map); + if (ret) { + rtw89_warn(rtwdev, "failed to read phycap map\n"); + goto out_free; + } + +out_free: + kfree(phycap_map); + + return ret; +} + +int rtw89_read_efuse_ver(struct rtw89_dev *rtwdev, u8 *ecv) +{ + int ret; + u8 val; + + ret = rtw89_dump_physical_efuse_map(rtwdev, &val, EF_FV_OFSET, 1, false); + if (ret) + return ret; + + *ecv = u8_get_bits(val, EF_CV_MASK); + if (*ecv == EF_CV_INV) + return -ENOENT; + + return 0; +} +EXPORT_SYMBOL(rtw89_read_efuse_ver); |