diff options
Diffstat (limited to 'drivers/staging/rtl8188eu/hal/fw.c')
| -rw-r--r-- | drivers/staging/rtl8188eu/hal/fw.c | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/drivers/staging/rtl8188eu/hal/fw.c b/drivers/staging/rtl8188eu/hal/fw.c new file mode 100644 index 0000000..486ee4b --- /dev/null +++ b/drivers/staging/rtl8188eu/hal/fw.c @@ -0,0 +1,201 @@ +// SPDX-License-Identifier: GPL-2.0 +/****************************************************************************** + * + * Copyright(c) 2009-2013 Realtek Corporation. + * + * Contact Information: + * wlanfae <wlanfae@realtek.com> + * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park, + * Hsinchu 300, Taiwan. + * + * Larry Finger <Larry.Finger@lwfinger.net> + * + *****************************************************************************/ + +#include "fw.h" +#include "drv_types.h" +#include "usb_ops_linux.h" +#include "rtl8188e_spec.h" +#include "rtl8188e_hal.h" + +#include <linux/firmware.h> +#include <linux/slab.h> + +static void _rtl88e_enable_fw_download(struct adapter *adapt, bool enable) +{ + u8 tmp; + + if (enable) { + tmp = usb_read8(adapt, REG_MCUFWDL); + usb_write8(adapt, REG_MCUFWDL, tmp | 0x01); + + tmp = usb_read8(adapt, REG_MCUFWDL + 2); + usb_write8(adapt, REG_MCUFWDL + 2, tmp & 0xf7); + } else { + tmp = usb_read8(adapt, REG_MCUFWDL); + usb_write8(adapt, REG_MCUFWDL, tmp & 0xfe); + + usb_write8(adapt, REG_MCUFWDL + 1, 0x00); + } +} + +static void _rtl88e_fw_block_write(struct adapter *adapt, + const u8 *buffer, u32 size) +{ + u32 blk_sz = sizeof(u32); + const u8 *byte_buffer; + const u32 *dword_buffer = (u32 *)buffer; + u32 i, write_address, blk_cnt, remain; + + blk_cnt = size / blk_sz; + remain = size % blk_sz; + + write_address = FW_8192C_START_ADDRESS; + + for (i = 0; i < blk_cnt; i++, write_address += blk_sz) + usb_write32(adapt, write_address, dword_buffer[i]); + + byte_buffer = buffer + blk_cnt * blk_sz; + for (i = 0; i < remain; i++, write_address++) + usb_write8(adapt, write_address, byte_buffer[i]); +} + +static void _rtl88e_fw_page_write(struct adapter *adapt, + u32 page, const u8 *buffer, u32 size) +{ + u8 value8; + u8 u8page = (u8)(page & 0x07); + + value8 = (usb_read8(adapt, REG_MCUFWDL + 2) & 0xF8) | u8page; + + usb_write8(adapt, (REG_MCUFWDL + 2), value8); + _rtl88e_fw_block_write(adapt, buffer, size); +} + +static void _rtl88e_write_fw(struct adapter *adapt, u8 *buffer, u32 size) +{ + u8 *buf_ptr = buffer; + u32 page_no, remain; + u32 page, offset; + + page_no = size / FW_8192C_PAGE_SIZE; + remain = size % FW_8192C_PAGE_SIZE; + + for (page = 0; page < page_no; page++) { + offset = page * FW_8192C_PAGE_SIZE; + _rtl88e_fw_page_write(adapt, page, (buf_ptr + offset), + FW_8192C_PAGE_SIZE); + } + + if (remain) { + offset = page_no * FW_8192C_PAGE_SIZE; + page = page_no; + _rtl88e_fw_page_write(adapt, page, (buf_ptr + offset), remain); + } +} + +static void rtl88e_firmware_selfreset(struct adapter *adapt) +{ + u8 u1b_tmp; + + u1b_tmp = usb_read8(adapt, REG_SYS_FUNC_EN + 1); + usb_write8(adapt, REG_SYS_FUNC_EN + 1, (u1b_tmp & (~BIT(2)))); + usb_write8(adapt, REG_SYS_FUNC_EN + 1, (u1b_tmp | BIT(2))); +} + +static int _rtl88e_fw_free_to_go(struct adapter *adapt) +{ + int err = -EIO; + u32 counter = 0; + u32 value32; + + do { + value32 = usb_read32(adapt, REG_MCUFWDL); + if (value32 & FWDL_ChkSum_rpt) + break; + } while (counter++ < POLLING_READY_TIMEOUT_COUNT); + + if (counter >= POLLING_READY_TIMEOUT_COUNT) + goto exit; + + value32 = usb_read32(adapt, REG_MCUFWDL); + value32 |= MCUFWDL_RDY; + value32 &= ~WINTINI_RDY; + usb_write32(adapt, REG_MCUFWDL, value32); + + rtl88e_firmware_selfreset(adapt); + counter = 0; + + do { + value32 = usb_read32(adapt, REG_MCUFWDL); + if (value32 & WINTINI_RDY) { + err = 0; + goto exit; + } + + udelay(FW_8192C_POLLING_DELAY); + + } while (counter++ < POLLING_READY_TIMEOUT_COUNT); + +exit: + return err; +} + +int rtl88eu_download_fw(struct adapter *adapt) +{ + struct dvobj_priv *dvobj = adapter_to_dvobj(adapt); + struct device *device = dvobj_to_dev(dvobj); + const struct firmware *fw; + const char fw_name[] = "rtlwifi/rtl8188eufw.bin"; + struct rtl92c_firmware_header *pfwheader = NULL; + u8 *download_data, *fw_data; + size_t download_size; + unsigned int trailing_zeros_length; + + if (request_firmware(&fw, fw_name, device)) { + dev_err(device, "Firmware %s not available\n", fw_name); + return -ENOENT; + } + + if (fw->size > FW_8188E_SIZE) { + dev_err(device, "Firmware size exceed 0x%X. Check it.\n", + FW_8188E_SIZE); + release_firmware(fw); + return -1; + } + + trailing_zeros_length = (4 - fw->size % 4) % 4; + + fw_data = kmalloc(fw->size + trailing_zeros_length, GFP_KERNEL); + if (!fw_data) { + release_firmware(fw); + return -ENOMEM; + } + + memcpy(fw_data, fw->data, fw->size); + memset(fw_data + fw->size, 0, trailing_zeros_length); + + pfwheader = (struct rtl92c_firmware_header *)fw_data; + + if (IS_FW_HEADER_EXIST(pfwheader)) { + download_data = fw_data + 32; + download_size = fw->size + trailing_zeros_length - 32; + } else { + download_data = fw_data; + download_size = fw->size + trailing_zeros_length; + } + + release_firmware(fw); + + if (usb_read8(adapt, REG_MCUFWDL) & RAM_DL_SEL) { + usb_write8(adapt, REG_MCUFWDL, 0); + rtl88e_firmware_selfreset(adapt); + } + _rtl88e_enable_fw_download(adapt, true); + usb_write8(adapt, REG_MCUFWDL, usb_read8(adapt, REG_MCUFWDL) | FWDL_ChkSum_rpt); + _rtl88e_write_fw(adapt, download_data, download_size); + _rtl88e_enable_fw_download(adapt, false); + + kfree(fw_data); + return _rtl88e_fw_free_to_go(adapt); +} |