drivers/net/wireless/realtek/rtlwifi/rtl8192c/fw_common.c

Source file repositories/reference/linux-study-clean/drivers/net/wireless/realtek/rtlwifi/rtl8192c/fw_common.c

File Facts

System
Linux kernel
Corpus path
drivers/net/wireless/realtek/rtlwifi/rtl8192c/fw_common.c
Extension
.c
Size
22867 bytes
Lines
771
Domain
Driver Families
Bucket
drivers/net
Inferred role
Driver Families: exported/initcall integration point
Status
integration implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

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);
		}
	}
}

static void _rtl92c_write_fw(struct ieee80211_hw *hw,
			     enum version_8192c version, u8 *buffer, u32 size)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
	bool is_version_b;
	u8 *bufferptr = (u8 *)buffer;

	rtl_dbg(rtlpriv, COMP_FW, DBG_TRACE, "FW size is %d bytes,\n", size);
	is_version_b = IS_NORMAL_CHIP(version);
	if (is_version_b) {
		u32 pagenums, remainsize;
		u32 page, offset;

		if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192CE)
			rtl_fill_dummy(bufferptr, &size);

		pagenums = size / FW_8192C_PAGE_SIZE;
		remainsize = size % FW_8192C_PAGE_SIZE;

		if (pagenums > 4)
			pr_err("Page numbers should not greater then 4\n");

		for (page = 0; page < pagenums; page++) {
			offset = page * FW_8192C_PAGE_SIZE;
			rtl_fw_page_write(hw, page, (bufferptr + offset),
					  FW_8192C_PAGE_SIZE);
		}

		if (remainsize) {
			offset = pagenums * FW_8192C_PAGE_SIZE;
			page = pagenums;
			rtl_fw_page_write(hw, page, (bufferptr + offset),
					  remainsize);
		}
	} else {
		rtl_fw_block_write(hw, buffer, size);
	}
}

static int _rtl92c_fw_free_to_go(struct ieee80211_hw *hw)
{
	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++ < FW_8192C_POLLING_TIMEOUT_COUNT) &&
		 (!(value32 & FWDL_CHKSUM_RPT)));

	if (counter >= FW_8192C_POLLING_TIMEOUT_COUNT) {
		pr_err("chksum report fail! REG_MCUFWDL:0x%08x .\n",
		       value32);
		goto exit;
	}
	value32 = rtl_read_dword(rtlpriv, REG_MCUFWDL);
	value32 |= MCUFWDL_RDY;
	value32 &= ~WINTINI_RDY;
	rtl_write_dword(rtlpriv, REG_MCUFWDL, value32);

	counter = 0;

	do {
		value32 = rtl_read_dword(rtlpriv, REG_MCUFWDL);
		if (value32 & WINTINI_RDY)
			return 0;

		mdelay(FW_8192C_POLLING_DELAY);

Annotation

Implementation Notes