root/drivers/net/wireless/realtek/rtlwifi/rtl8723com/fw_common.c
// SPDX-License-Identifier: GPL-2.0
/* Copyright(c) 2009-2014  Realtek Corporation.*/

#include "../wifi.h"
#include "../pci.h"
#include "../base.h"
#include "../efuse.h"
#include "fw_common.h"
#include <linux/module.h>

void rtl8723_enable_fw_download(struct ieee80211_hw *hw, bool enable)
{
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        u8 tmp;

        if (enable) {
                tmp = rtl_read_byte(rtlpriv, REG_SYS_FUNC_EN + 1);
                rtl_write_byte(rtlpriv, REG_SYS_FUNC_EN + 1,
                               tmp | 0x04);

                tmp = rtl_read_byte(rtlpriv, REG_MCUFWDL);
                rtl_write_byte(rtlpriv, REG_MCUFWDL, tmp | 0x01);

                tmp = rtl_read_byte(rtlpriv, REG_MCUFWDL + 2);
                rtl_write_byte(rtlpriv, REG_MCUFWDL + 2, tmp & 0xf7);
        } else {
                tmp = rtl_read_byte(rtlpriv, REG_MCUFWDL);
                rtl_write_byte(rtlpriv, REG_MCUFWDL, tmp & 0xfe);

                rtl_write_byte(rtlpriv, REG_MCUFWDL + 1, 0x00);
        }
}
EXPORT_SYMBOL_GPL(rtl8723_enable_fw_download);

void rtl8723_write_fw(struct ieee80211_hw *hw,
                      enum version_8723e version,
                      u8 *buffer, u32 size, u8 max_page)
{
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        u8 *bufferptr = buffer;
        u32 page_nums, remain_size;
        u32 page, offset;

        rtl_dbg(rtlpriv, COMP_FW, DBG_TRACE, "FW size is %d bytes,\n", size);

        rtl_fill_dummy(bufferptr, &size);

        page_nums = size / FW_8192C_PAGE_SIZE;
        remain_size = size % FW_8192C_PAGE_SIZE;

        if (page_nums > max_page) {
                pr_err("Page numbers should not greater than %d\n",
                       max_page);
        }
        for (page = 0; page < page_nums; page++) {
                offset = page * FW_8192C_PAGE_SIZE;
                rtl_fw_page_write(hw, page, (bufferptr + offset),
                                  FW_8192C_PAGE_SIZE);
        }

        if (remain_size) {
                offset = page_nums * FW_8192C_PAGE_SIZE;
                page = page_nums;
                rtl_fw_page_write(hw, page, (bufferptr + offset), remain_size);
        }
        rtl_dbg(rtlpriv, COMP_FW, DBG_TRACE, "FW write done.\n");
}
EXPORT_SYMBOL_GPL(rtl8723_write_fw);

void rtl8723ae_firmware_selfreset(struct ieee80211_hw *hw)
{
        u8 u1b_tmp;
        u8 delay = 100;
        struct rtl_priv *rtlpriv = rtl_priv(hw);

        rtl_write_byte(rtlpriv, REG_HMETFR + 3, 0x20);
        u1b_tmp = rtl_read_byte(rtlpriv, REG_SYS_FUNC_EN + 1);

        while (u1b_tmp & BIT(2)) {
                delay--;
                if (delay == 0)
                        break;
                udelay(50);
                u1b_tmp = rtl_read_byte(rtlpriv, REG_SYS_FUNC_EN + 1);
        }
        if (delay == 0) {
                u1b_tmp = rtl_read_byte(rtlpriv, REG_SYS_FUNC_EN + 1);
                rtl_write_byte(rtlpriv, REG_SYS_FUNC_EN + 1,
                               u1b_tmp&(~BIT(2)));
        }
}
EXPORT_SYMBOL_GPL(rtl8723ae_firmware_selfreset);

void rtl8723be_firmware_selfreset(struct ieee80211_hw *hw)
{
        u8 u1b_tmp;
        struct rtl_priv *rtlpriv = rtl_priv(hw);

        u1b_tmp = rtl_read_byte(rtlpriv, REG_RSV_CTRL + 1);
        rtl_write_byte(rtlpriv, REG_RSV_CTRL + 1, (u1b_tmp & (~BIT(0))));

        u1b_tmp = rtl_read_byte(rtlpriv, REG_SYS_FUNC_EN + 1);
        rtl_write_byte(rtlpriv, REG_SYS_FUNC_EN + 1, (u1b_tmp & (~BIT(2))));
        udelay(50);

        u1b_tmp = rtl_read_byte(rtlpriv, REG_RSV_CTRL + 1);
        rtl_write_byte(rtlpriv, REG_RSV_CTRL + 1, (u1b_tmp | BIT(0)));

        u1b_tmp = rtl_read_byte(rtlpriv, REG_SYS_FUNC_EN + 1);
        rtl_write_byte(rtlpriv, REG_SYS_FUNC_EN + 1, (u1b_tmp | BIT(2)));

        rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD,
                "_8051Reset8723be(): 8051 reset success .\n");
}
EXPORT_SYMBOL_GPL(rtl8723be_firmware_selfreset);

int rtl8723_fw_free_to_go(struct ieee80211_hw *hw, bool is_8723be,
                          int max_count)
{
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        int err = -EIO;
        u32 counter = 0;
        u32 value32;

        do {
                value32 = rtl_read_dword(rtlpriv, REG_MCUFWDL);
        } while ((counter++ < max_count) &&
                 (!(value32 & FWDL_CHKSUM_RPT)));

        if (counter >= max_count) {
                pr_err("chksum report fail ! REG_MCUFWDL:0x%08x .\n",
                       value32);
                goto exit;
        }
        value32 = rtl_read_dword(rtlpriv, REG_MCUFWDL) | MCUFWDL_RDY;
        value32 &= ~WINTINI_RDY;
        rtl_write_dword(rtlpriv, REG_MCUFWDL, value32);

        if (is_8723be)
                rtl8723be_firmware_selfreset(hw);
        counter = 0;

        do {
                value32 = rtl_read_dword(rtlpriv, REG_MCUFWDL);
                if (value32 & WINTINI_RDY) {
                        rtl_dbg(rtlpriv, COMP_FW, DBG_TRACE,
                                "Polling FW ready success!! REG_MCUFWDL:0x%08x .\n",
                                value32);
                        err = 0;
                        goto exit;
                }

                mdelay(FW_8192C_POLLING_DELAY);

        } while (counter++ < max_count);

        pr_err("Polling FW ready fail!! REG_MCUFWDL:0x%08x .\n",
               value32);

exit:
        return err;
}
EXPORT_SYMBOL_GPL(rtl8723_fw_free_to_go);

int rtl8723_download_fw(struct ieee80211_hw *hw,
                        bool is_8723be, int max_count)
{
        struct rtl_priv *rtlpriv = rtl_priv(hw);
        struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
        struct rtlwifi_firmware_header *pfwheader;
        u8 *pfwdata;
        u32 fwsize;
        int err;
        enum version_8723e version = rtlhal->version;
        int max_page;

        if (rtlpriv->max_fw_size == 0 || !rtlhal->pfirmware)
                return 1;

        pfwheader = (struct rtlwifi_firmware_header *)rtlhal->pfirmware;
        rtlhal->fw_version = le16_to_cpu(pfwheader->version);
        rtlhal->fw_subversion = pfwheader->subversion;
        pfwdata = rtlhal->pfirmware;
        fwsize = rtlhal->fwsize;

        if (!is_8723be)
                max_page = 6;
        else
                max_page = 8;
        if (rtlpriv->cfg->ops->is_fw_header(pfwheader)) {
                rtl_dbg(rtlpriv, COMP_FW, DBG_LOUD,
                        "Firmware Version(%d), Signature(%#x), Size(%d)\n",
                        pfwheader->version, pfwheader->signature,
                        (int)sizeof(struct rtlwifi_firmware_header));

                pfwdata = pfwdata + sizeof(struct rtlwifi_firmware_header);
                fwsize = fwsize - sizeof(struct rtlwifi_firmware_header);
        }

        if (rtl_read_byte(rtlpriv, REG_MCUFWDL)&BIT(7)) {
                if (is_8723be)
                        rtl8723be_firmware_selfreset(hw);
                else
                        rtl8723ae_firmware_selfreset(hw);
                rtl_write_byte(rtlpriv, REG_MCUFWDL, 0x00);
        }
        rtl8723_enable_fw_download(hw, true);
        rtl8723_write_fw(hw, version, pfwdata, fwsize, max_page);
        rtl8723_enable_fw_download(hw, false);

        err = rtl8723_fw_free_to_go(hw, is_8723be, max_count);
        if (err)
                pr_err("Firmware is not ready to run!\n");
        return 0;
}
EXPORT_SYMBOL_GPL(rtl8723_download_fw);