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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright(c) 2008 - 2010 Realtek Corporation. All rights reserved.
*
* Contact Information: wlanfae <wlanfae@realtek.com>
*/
#include "rtl_core.h"
#include "r8192E_hw.h"
#include "r8192E_hwimg.h"
#include "r8192E_firmware.h"
#include "r8192E_cmdpkt.h"
#include <linux/firmware.h>
static bool _rtl92e_wait_for_fw(struct net_device *dev, u32 mask, u32 timeout)
{
unsigned long deadline = jiffies + msecs_to_jiffies(timeout);
while (time_before(jiffies, deadline)) {
if (rtl92e_readl(dev, CPU_GEN) & mask)
return true;
mdelay(2);
}
return false;
}
static bool _rtl92e_fw_boot_cpu(struct net_device *dev)
{
u32 CPU_status = 0;
if (!_rtl92e_wait_for_fw(dev, CPU_GEN_PUT_CODE_OK, 200)) {
netdev_err(dev, "Firmware download failed.\n");
return false;
}
netdev_dbg(dev, "Download Firmware: Put code ok!\n");
CPU_status = rtl92e_readl(dev, CPU_GEN);
rtl92e_writeb(dev, CPU_GEN,
(u8)((CPU_status|CPU_GEN_PWR_STB_CPU)&0xff));
mdelay(1);
if (!_rtl92e_wait_for_fw(dev, CPU_GEN_BOOT_RDY, 200)) {
netdev_err(dev, "Firmware boot failed.\n");
return false;
}
netdev_dbg(dev, "Download Firmware: Boot ready!\n");
return true;
}
static bool _rtl92e_fw_check_ready(struct net_device *dev,
u8 load_fw_status)
{
struct r8192_priv *priv = rtllib_priv(dev);
struct rt_firmware *pfirmware = priv->pFirmware;
bool rt_status = true;
switch (load_fw_status) {
case FW_INIT_STEP0_BOOT:
pfirmware->status = FW_STATUS_1_MOVE_BOOT_CODE;
break;
case FW_INIT_STEP1_MAIN:
pfirmware->status = FW_STATUS_2_MOVE_MAIN_CODE;
rt_status = _rtl92e_fw_boot_cpu(dev);
if (rt_status)
pfirmware->status = FW_STATUS_3_TURNON_CPU;
else
netdev_dbg(dev, "_rtl92e_fw_boot_cpu fail!\n");
break;
case FW_INIT_STEP2_DATA:
pfirmware->status = FW_STATUS_4_MOVE_DATA_CODE;
mdelay(1);
rt_status = _rtl92e_wait_for_fw(dev, CPU_GEN_FIRM_RDY, 20);
if (rt_status)
pfirmware->status = FW_STATUS_5_READY;
else
RT_TRACE(COMP_FIRMWARE,
"_rtl92e_is_fw_ready fail(%d)!\n",
rt_status);
break;
default:
rt_status = false;
netdev_dbg(dev, "Unknown firmware status");
break;
}
return rt_status;
}
static bool _rtl92e_fw_prepare(struct net_device *dev, struct rt_fw_blob *blob,
const char *name, u8 padding)
{
const struct firmware *fw;
int rc, i;
bool ret = true;
rc = request_firmware(&fw, name, &dev->dev);
if (rc < 0)
return false;
if (round_up(fw->size, 4) > MAX_FW_SIZE - padding) {
netdev_err(dev, "Firmware image %s too big for the device.\n",
name);
ret = false;
goto out;
}
if (padding)
memset(blob->data, 0, padding);
if (fw->size % 4)
memset(blob->data + padding + fw->size, 0, 4);
memcpy(blob->data + padding, fw->data, fw->size);
blob->size = round_up(fw->size, 4) + padding;
/* Swap endian - firmware is packaged in invalid endiannes*/
for (i = padding; i < blob->size; i += 4) {
u32 *data = (u32 *)(blob->data + i);
*data = swab32p(data);
}
out:
release_firmware(fw);
return ret;
}
bool rtl92e_init_fw(struct net_device *dev)
{
struct r8192_priv *priv = rtllib_priv(dev);
bool rt_status = true;
u32 file_length = 0;
u8 *mapped_file = NULL;
u8 i = 0;
enum opt_rst_type rst_opt = OPT_SYSTEM_RESET;
enum firmware_init_step starting_state = FW_INIT_STEP0_BOOT;
struct rt_firmware *pfirmware = priv->pFirmware;
netdev_dbg(dev, " PlatformInitFirmware()==>\n");
if (pfirmware->status == FW_STATUS_0_INIT) {
rst_opt = OPT_SYSTEM_RESET;
starting_state = FW_INIT_STEP0_BOOT;
} else if (pfirmware->status == FW_STATUS_5_READY) {
rst_opt = OPT_FIRMWARE_RESET;
starting_state = FW_INIT_STEP2_DATA;
} else {
RT_TRACE(COMP_FIRMWARE,
"PlatformInitFirmware: undefined firmware state\n");
}
for (i = starting_state; i <= FW_INIT_STEP2_DATA; i++) {
if (rst_opt == OPT_SYSTEM_RESET) {
if (pfirmware->blobs[i].size == 0) {
const char *fw_name[3] = {
RTL8192E_BOOT_IMG_FW,
RTL8192E_MAIN_IMG_FW,
RTL8192E_DATA_IMG_FW
};
int pad = 0;
if (i == FW_INIT_STEP1_MAIN)
pad = 128;
if (!_rtl92e_fw_prepare(dev,
&pfirmware->blobs[i],
fw_name[i],
pad))
goto download_firmware_fail;
}
}
mapped_file = pfirmware->blobs[i].data;
file_length = pfirmware->blobs[i].size;
rt_status = rtl92e_send_cmd_pkt(dev, DESC_PACKET_TYPE_INIT,
mapped_file, file_length);
if (!rt_status)
goto download_firmware_fail;
if (!_rtl92e_fw_check_ready(dev, i))
goto download_firmware_fail;
}
netdev_dbg(dev, "Firmware Download Success\n");
return rt_status;
download_firmware_fail:
netdev_err(dev, "%s: Failed to initialize firmware.\n", __func__);
return false;
}
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