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// SPDX-License-Identifier: GPL-2.0
/* Copyright(c) 2007 - 2011 Realtek Corporation. */
#include <linux/firmware.h>
#include "../include/rtw_fw.h"
#define MAX_REG_BLOCK_SIZE 196
#define FW_8188E_START_ADDRESS 0x1000
#define MAX_PAGE_SIZE 4096
#define IS_FW_HEADER_EXIST(_fwhdr) \
((le16_to_cpu(_fwhdr->signature) & 0xFFF0) == 0x92C0 || \
(le16_to_cpu(_fwhdr->signature) & 0xFFF0) == 0x88C0 || \
(le16_to_cpu(_fwhdr->signature) & 0xFFF0) == 0x2300 || \
(le16_to_cpu(_fwhdr->signature) & 0xFFF0) == 0x88E0)
struct rt_firmware_hdr {
__le16 signature; /* 92C0: test chip; 92C,
* 88C0: test chip; 88C1: MP A-cut;
* 92C1: MP A-cut */
u8 category; /* AP/NIC and USB/PCI */
u8 function; /* Reserved for different FW function
* indcation, for further use when
* driver needs to download different
* FW for different conditions */
__le16 version; /* FW Version */
u8 subversion; /* FW Subversion, default 0x00 */
u8 rsvd1;
u8 month; /* Release time Month field */
u8 date; /* Release time Date field */
u8 hour; /* Release time Hour field */
u8 minute; /* Release time Minute field */
__le16 ramcodesize; /* The size of RAM code */
u8 foundry;
u8 rsvd2;
__le32 svnidx; /* The SVN entry index */
__le32 rsvd3;
__le32 rsvd4;
__le32 rsvd5;
};
static_assert(sizeof(struct rt_firmware_hdr) == 32);
static void fw_download_enable(struct adapter *padapter, bool enable)
{
u8 tmp;
if (enable) {
/* MCU firmware download enable. */
tmp = rtw_read8(padapter, REG_MCUFWDL);
rtw_write8(padapter, REG_MCUFWDL, tmp | 0x01);
/* 8051 reset */
tmp = rtw_read8(padapter, REG_MCUFWDL + 2);
rtw_write8(padapter, REG_MCUFWDL + 2, tmp & 0xf7);
} else {
/* MCU firmware download disable. */
tmp = rtw_read8(padapter, REG_MCUFWDL);
rtw_write8(padapter, REG_MCUFWDL, tmp & 0xfe);
/* Reserved for fw extension. */
rtw_write8(padapter, REG_MCUFWDL + 1, 0x00);
}
}
static int block_write(struct adapter *padapter, u8 *buffer, u32 size)
{
int ret = _SUCCESS;
u32 blocks, block_size, remain;
u32 i, offset, addr;
u8 *data;
block_size = MAX_REG_BLOCK_SIZE;
blocks = size / block_size;
remain = size % block_size;
for (i = 0; i < blocks; i++) {
addr = FW_8188E_START_ADDRESS + i * block_size;
data = buffer + i * block_size;
ret = rtw_writeN(padapter, addr, block_size, data);
if (ret == _FAIL)
goto exit;
}
if (remain) {
offset = blocks * block_size;
block_size = 8;
blocks = remain / block_size;
remain = remain % block_size;
for (i = 0; i < blocks; i++) {
addr = FW_8188E_START_ADDRESS + offset + i * block_size;
data = buffer + offset + i * block_size;
ret = rtw_writeN(padapter, addr, block_size, data);
if (ret == _FAIL)
goto exit;
}
}
if (remain) {
offset += blocks * block_size;
/* block size 1 */
blocks = remain;
for (i = 0; i < blocks; i++) {
addr = FW_8188E_START_ADDRESS + offset + i;
data = buffer + offset + i;
ret = rtw_write8(padapter, addr, *data);
if (ret == _FAIL)
goto exit;
}
}
exit:
return ret;
}
static int page_write(struct adapter *padapter, u32 page, u8 *buffer, u32 size)
{
u8 value8;
u8 u8Page = (u8)(page & 0x07);
value8 = (rtw_read8(padapter, REG_MCUFWDL + 2) & 0xF8) | u8Page;
rtw_write8(padapter, REG_MCUFWDL + 2, value8);
return block_write(padapter, buffer, size);
}
static int write_fw(struct adapter *padapter, u8 *buffer, u32 size)
{
/* Since we need dynamic decide method of dwonload fw, so we call this function to get chip version. */
/* We can remove _ReadChipVersion from ReadpadapterInfo8192C later. */
int ret = _SUCCESS;
u32 pageNums, remainSize;
u32 page, offset;
pageNums = size / MAX_PAGE_SIZE;
remainSize = size % MAX_PAGE_SIZE;
for (page = 0; page < pageNums; page++) {
offset = page * MAX_PAGE_SIZE;
ret = page_write(padapter, page, buffer + offset, MAX_PAGE_SIZE);
if (ret == _FAIL)
goto exit;
}
if (remainSize) {
offset = pageNums * MAX_PAGE_SIZE;
page = pageNums;
ret = page_write(padapter, page, buffer + offset, remainSize);
if (ret == _FAIL)
goto exit;
}
exit:
return ret;
}
void rtw_reset_8051(struct adapter *padapter)
{
u8 val8;
val8 = rtw_read8(padapter, REG_SYS_FUNC_EN + 1);
rtw_write8(padapter, REG_SYS_FUNC_EN + 1, val8 & (~BIT(2)));
rtw_write8(padapter, REG_SYS_FUNC_EN + 1, val8 | (BIT(2)));
}
static int fw_free_to_go(struct adapter *padapter)
{
u32 counter = 0;
u32 value32;
/* polling CheckSum report */
do {
value32 = rtw_read32(padapter, REG_MCUFWDL);
if (value32 & FWDL_CHKSUM_RPT)
break;
} while (counter++ < POLLING_READY_TIMEOUT_COUNT);
if (counter >= POLLING_READY_TIMEOUT_COUNT)
return _FAIL;
value32 = rtw_read32(padapter, REG_MCUFWDL);
value32 |= MCUFWDL_RDY;
value32 &= ~WINTINI_RDY;
rtw_write32(padapter, REG_MCUFWDL, value32);
rtw_reset_8051(padapter);
/* polling for FW ready */
counter = 0;
do {
value32 = rtw_read32(padapter, REG_MCUFWDL);
if (value32 & WINTINI_RDY)
return _SUCCESS;
udelay(5);
} while (counter++ < POLLING_READY_TIMEOUT_COUNT);
return _FAIL;
}
static int load_firmware(struct rt_firmware *rtfw, struct device *device)
{
int ret = _SUCCESS;
const struct firmware *fw;
const char *fw_name = "rtlwifi/rtl8188eufw.bin";
int err = request_firmware(&fw, fw_name, device);
if (err) {
pr_err("Request firmware failed with error 0x%x\n", err);
ret = _FAIL;
goto exit;
}
if (!fw) {
pr_err("Firmware %s not available\n", fw_name);
ret = _FAIL;
goto exit;
}
rtfw->data = kmemdup(fw->data, fw->size, GFP_KERNEL);
if (!rtfw->data) {
pr_err("Failed to allocate rtfw->data\n");
ret = _FAIL;
goto exit;
}
rtfw->size = fw->size;
exit:
release_firmware(fw);
return ret;
}
int rtl8188e_firmware_download(struct adapter *padapter)
{
int ret = _SUCCESS;
u8 write_fw_retry = 0;
unsigned long fwdl_timeout;
struct dvobj_priv *dvobj = adapter_to_dvobj(padapter);
struct device *device = dvobj_to_dev(dvobj);
struct rt_firmware_hdr *fwhdr = NULL;
u8 *fw_data;
u32 fw_size;
if (!dvobj->firmware.data)
ret = load_firmware(&dvobj->firmware, device);
if (ret == _FAIL) {
dvobj->firmware.data = NULL;
goto exit;
}
fw_data = dvobj->firmware.data;
fw_size = dvobj->firmware.size;
fwhdr = (struct rt_firmware_hdr *)dvobj->firmware.data;
if (IS_FW_HEADER_EXIST(fwhdr)) {
pr_info_once("%sFirmware Version %d, SubVersion %d, Signature 0x%x\n",
DRIVER_PREFIX, le16_to_cpu(fwhdr->version), fwhdr->subversion,
le16_to_cpu(fwhdr->signature));
fw_data = fw_data + sizeof(struct rt_firmware_hdr);
fw_size = fw_size - sizeof(struct rt_firmware_hdr);
}
/* Suggested by Filen. If 8051 is running in RAM code, driver should inform Fw to reset by itself, */
/* or it will cause download Fw fail. 2010.02.01. by tynli. */
if (rtw_read8(padapter, REG_MCUFWDL) & RAM_DL_SEL) { /* 8051 RAM code */
rtw_write8(padapter, REG_MCUFWDL, 0x00);
rtw_reset_8051(padapter);
}
fw_download_enable(padapter, true);
fwdl_timeout = jiffies + msecs_to_jiffies(500);
while (1) {
/* reset the FWDL chksum */
rtw_write8(padapter, REG_MCUFWDL, rtw_read8(padapter, REG_MCUFWDL) | FWDL_CHKSUM_RPT);
ret = write_fw(padapter, fw_data, fw_size);
if (ret == _SUCCESS ||
(time_after(jiffies, fwdl_timeout) && write_fw_retry++ >= 3))
break;
}
fw_download_enable(padapter, false);
if (ret != _SUCCESS)
goto exit;
ret = fw_free_to_go(padapter);
if (ret != _SUCCESS)
goto exit;
exit:
return ret;
}
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