wifi: rtw89: fw: implement supported functions of download firmware for WiFi 7 chips

To work with generalized flow of download firmware, implement WiFi 7
specific functions to support it. These functions include disable/enable
WiFi CPU, status of path ready, and status of firmware.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230901073956.54203-4-pkshih@realtek.com

drivers/net/wireless/realtek/rtw89/mac_be.c

@@ -2,6 +2,8 @@
 /* Copyright(c) 2019-2020  Realtek Corporation
  */
 
+#include "debug.h"
+#include "fw.h"
 #include "mac.h"
 #include "reg.h"
 
@@ -28,11 +30,140 @@ static const u32 rtw89_mac_mem_base_addrs_be[RTW89_MAC_MEM_NUM] = {
 	[RTW89_MAC_MEM_WD_PAGE]		= WD_PAGE_BASE_ADDR_BE,
 };
 
+static void rtw89_mac_disable_cpu_be(struct rtw89_dev *rtwdev)
+{
+	u32 val32;
+
+	clear_bit(RTW89_FLAG_FW_RDY, rtwdev->flags);
+
+	rtw89_write32_clr(rtwdev, R_BE_PLATFORM_ENABLE, B_BE_WCPU_EN);
+	rtw89_write32_set(rtwdev, R_BE_PLATFORM_ENABLE, B_BE_HOLD_AFTER_RESET);
+	rtw89_write32_set(rtwdev, R_BE_PLATFORM_ENABLE, B_BE_WCPU_EN);
+
+	val32 = rtw89_read32(rtwdev, R_BE_WCPU_FW_CTRL);
+	val32 &= B_BE_RUN_ENV_MASK;
+	rtw89_write32(rtwdev, R_BE_WCPU_FW_CTRL, val32);
+
+	rtw89_write32_set(rtwdev, R_BE_DCPU_PLATFORM_ENABLE, B_BE_DCPU_PLATFORM_EN);
+
+	rtw89_write32(rtwdev, R_BE_UDM0, 0);
+	rtw89_write32(rtwdev, R_BE_HALT_C2H, 0);
+	rtw89_write32(rtwdev, R_BE_UDM2, 0);
+}
+
+static void set_cpu_en(struct rtw89_dev *rtwdev)
+{
+	u32 set = B_BE_WLANCPU_FWDL_EN;
+
+	rtw89_write32_set(rtwdev, R_BE_WCPU_FW_CTRL, set);
+}
+
+static int wcpu_on(struct rtw89_dev *rtwdev, u8 boot_reason, bool dlfw)
+{
+	u32 val32;
+	int ret;
+
+	rtw89_write32_set(rtwdev, R_BE_UDM0, B_BE_UDM0_DBG_MODE_CTRL);
+
+	val32 = rtw89_read32(rtwdev, R_BE_HALT_C2H);
+	if (val32) {
+		rtw89_warn(rtwdev, "[SER] AON L2 Debug register not empty before Boot.\n");
+		rtw89_warn(rtwdev, "[SER] %s: R_BE_HALT_C2H = 0x%x\n", __func__, val32);
+	}
+	val32 = rtw89_read32(rtwdev, R_BE_UDM1);
+	if (val32) {
+		rtw89_warn(rtwdev, "[SER] AON L2 Debug register not empty before Boot.\n");
+		rtw89_warn(rtwdev, "[SER] %s: R_BE_UDM1 = 0x%x\n", __func__, val32);
+	}
+	val32 = rtw89_read32(rtwdev, R_BE_UDM2);
+	if (val32) {
+		rtw89_warn(rtwdev, "[SER] AON L2 Debug register not empty before Boot.\n");
+		rtw89_warn(rtwdev, "[SER] %s: R_BE_UDM2 = 0x%x\n", __func__, val32);
+	}
+
+	rtw89_write32(rtwdev, R_BE_UDM1, 0);
+	rtw89_write32(rtwdev, R_BE_UDM2, 0);
+	rtw89_write32(rtwdev, R_BE_HALT_H2C, 0);
+	rtw89_write32(rtwdev, R_BE_HALT_C2H, 0);
+	rtw89_write32(rtwdev, R_BE_HALT_H2C_CTRL, 0);
+	rtw89_write32(rtwdev, R_BE_HALT_C2H_CTRL, 0);
+
+	rtw89_write32_set(rtwdev, R_BE_SYS_CLK_CTRL, B_BE_CPU_CLK_EN);
+	rtw89_write32_clr(rtwdev, R_BE_SYS_CFG5,
+			  B_BE_WDT_WAKE_PCIE_EN | B_BE_WDT_WAKE_USB_EN);
+	rtw89_write32_clr(rtwdev, R_BE_WCPU_FW_CTRL,
+			  B_BE_WDT_PLT_RST_EN | B_BE_WCPU_ROM_CUT_GET);
+
+	rtw89_write16_mask(rtwdev, R_BE_BOOT_REASON, B_BE_BOOT_REASON_MASK, boot_reason);
+	rtw89_write32_clr(rtwdev, R_BE_PLATFORM_ENABLE, B_BE_WCPU_EN);
+	rtw89_write32_clr(rtwdev, R_BE_PLATFORM_ENABLE, B_BE_HOLD_AFTER_RESET);
+	rtw89_write32_set(rtwdev, R_BE_PLATFORM_ENABLE, B_BE_WCPU_EN);
+
+	if (!dlfw) {
+		ret = rtw89_fw_check_rdy(rtwdev);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int rtw89_mac_fwdl_enable_wcpu_be(struct rtw89_dev *rtwdev,
+					 u8 boot_reason, bool dlfw)
+{
+	set_cpu_en(rtwdev);
+
+	return wcpu_on(rtwdev, boot_reason, dlfw);
+}
+
+static const u8 fwdl_status_map[] = {
+	[0] = RTW89_FWDL_INITIAL_STATE,
+	[1] = RTW89_FWDL_FWDL_ONGOING,
+	[4] = RTW89_FWDL_CHECKSUM_FAIL,
+	[5] = RTW89_FWDL_SECURITY_FAIL,
+	[6] = RTW89_FWDL_SECURITY_FAIL,
+	[7] = RTW89_FWDL_CV_NOT_MATCH,
+	[8] = RTW89_FWDL_RSVD0,
+	[2] = RTW89_FWDL_WCPU_FWDL_RDY,
+	[3] = RTW89_FWDL_WCPU_FW_INIT_RDY,
+	[9] = RTW89_FWDL_RSVD0,
+};
+
+static u8 fwdl_get_status_be(struct rtw89_dev *rtwdev)
+{
+	u32 val32;
+	u8 st;
+
+	val32 = rtw89_read32(rtwdev, R_BE_WCPU_FW_CTRL);
+
+	st = u32_get_bits(val32, B_BE_WCPU_FWDL_STATUS_MASK);
+	if (st < ARRAY_SIZE(fwdl_status_map))
+		return fwdl_status_map[st];
+
+	return st;
+}
+
+static int rtw89_fwdl_check_path_ready_be(struct rtw89_dev *rtwdev,
+					  bool h2c_or_fwdl)
+{
+	u32 check = h2c_or_fwdl ? B_BE_H2C_PATH_RDY : B_BE_DLFW_PATH_RDY;
+	u32 val;
+
+	return read_poll_timeout_atomic(rtw89_read32, val, val & check,
+					1, 1000000, false,
+					rtwdev, R_BE_WCPU_FW_CTRL);
+}
+
 const struct rtw89_mac_gen_def rtw89_mac_gen_be = {
 	.band1_offset = RTW89_MAC_BE_BAND_REG_OFFSET,
 	.filter_model_addr = R_BE_FILTER_MODEL_ADDR,
 	.indir_access_addr = R_BE_INDIR_ACCESS_ENTRY,
 	.mem_base_addrs = rtw89_mac_mem_base_addrs_be,
 	.rx_fltr = R_BE_RX_FLTR_OPT,
+
+	.disable_cpu = rtw89_mac_disable_cpu_be,
+	.fwdl_enable_wcpu = rtw89_mac_fwdl_enable_wcpu_be,
+	.fwdl_get_status = fwdl_get_status_be,
+	.fwdl_check_path_ready = rtw89_fwdl_check_path_ready_be,
 };
 EXPORT_SYMBOL(rtw89_mac_gen_be);

drivers/net/wireless/realtek/rtw89/reg.h

@@ -3625,8 +3625,115 @@
 #define B_AX_GNT_BT_TX_SW_VAL BIT(1)
 #define B_AX_GNT_BT_TX_SW_CTRL BIT(0)
 
+#define R_BE_SYS_CLK_CTRL 0x0008
+#define B_BE_CPU_CLK_EN BIT(14)
+#define B_BE_SYMR_BE_CLK_EN BIT(13)
+#define B_BE_MAC_CLK_EN BIT(11)
+#define B_BE_EXT_32K_EN BIT(8)
+#define B_BE_WL_CLK_TEST BIT(7)
+#define B_BE_LOADER_CLK_EN BIT(5)
+#define B_BE_ANA_CLK_DIVISION_2 BIT(1)
+#define B_BE_CNTD16V_EN BIT(0)
+
+#define R_BE_PLATFORM_ENABLE 0x0088
+#define B_BE_HOLD_AFTER_RESET BIT(11)
+#define B_BE_SYM_WLPLT_MEM_MUX_EN BIT(10)
+#define B_BE_WCPU_WARM_EN BIT(9)
+#define B_BE_SPIC_EN BIT(8)
+#define B_BE_UART_EN BIT(7)
+#define B_BE_IDDMA_EN BIT(6)
+#define B_BE_IPSEC_EN BIT(5)
+#define B_BE_HIOE_EN BIT(4)
+#define B_BE_APB_WRAP_EN BIT(2)
+#define B_BE_WCPU_EN BIT(1)
+#define B_BE_PLATFORM_EN BIT(0)
+
+#define R_BE_HALT_H2C_CTRL 0x0160
+#define B_BE_HALT_H2C_TRIGGER BIT(0)
+
+#define R_BE_HALT_C2H_CTRL 0x0164
+#define B_BE_HALT_C2H_TRIGGER BIT(0)
+
+#define R_BE_HALT_H2C 0x0168
+#define B_BE_HALT_H2C_MASK GENMASK(31, 0)
+
+#define R_BE_HALT_C2H 0x016C
+#define B_BE_HALT_C2H_ERROR_SENARIO_MASK GENMASK(31, 28)
+#define B_BE_ERROR_CODE_MASK GENMASK(15, 0)
+
+#define R_BE_SYS_CFG5 0x0170
+#define B_BE_WDT_DATACPU_WAKE_PCIE_EN BIT(12)
+#define B_BE_WDT_DATACPU_WAKE_USB_EN BIT(11)
+#define B_BE_WDT_WAKE_PCIE_EN BIT(10)
+#define B_BE_WDT_WAKE_USB_EN BIT(9)
+#define B_BE_SYM_DIS_HC_ACCESS_MAC BIT(8)
+#define B_BE_LPS_STATUS BIT(3)
+#define B_BE_HCI_TXDMA_BUSY BIT(2)
+
+#define R_BE_WCPU_FW_CTRL 0x01E0
+#define B_BE_RUN_ENV_MASK GENMASK(31, 30)
+#define B_BE_WCPU_FWDL_STATUS_MASK GENMASK(29, 26)
+#define B_BE_WDT_PLT_RST_EN BIT(17)
+#define B_BE_FW_SEC_AUTH_DONE BIT(14)
+#define B_BE_FW_CPU_UTIL_STS_EN BIT(13)
+#define B_BE_BBMCU1_FWDL_EN BIT(12)
+#define B_BE_BBMCU0_FWDL_EN BIT(11)
+#define B_BE_DATACPU_FWDL_EN BIT(10)
+#define B_BE_WLANCPU_FWDL_EN BIT(9)
+#define B_BE_WCPU_ROM_CUT_GET BIT(8)
+#define B_BE_WCPU_ROM_CUT_VAL_MASK GENMASK(7, 4)
+#define B_BE_FW_BOOT_MODE_MASK GENMASK(3, 2)
+#define B_BE_H2C_PATH_RDY BIT(1)
+#define B_BE_DLFW_PATH_RDY BIT(0)
+
+#define R_BE_BOOT_REASON 0x01E6
+#define B_BE_BOOT_REASON_MASK GENMASK(2, 0)
+
+#define R_BE_LDM 0x01E8
+#define B_BE_EN_32K BIT(31)
+#define B_BE_LDM_MASK GENMASK(30, 0)
+
+#define R_BE_UDM0 0x01F0
+#define B_BE_UDM0_SEND2RA_CNT_MASK GENMASK(31, 28)
+#define B_BE_UDM0_TX_RPT_CNT_MASK GENMASK(27, 24)
+#define B_BE_UDM0_FS_CODE_MASK GENMASK(23, 8)
+#define B_BE_NULL_POINTER_INDC BIT(7)
+#define B_BE_ROM_ASSERT_INDC BIT(6)
+#define B_BE_RAM_ASSERT_INDC BIT(5)
+#define B_BE_FW_IMAGE_TYPE BIT(4)
+#define B_BE_UDM0_TRAP_LOOP_CTRL BIT(2)
+#define B_BE_UDM0_SEND_HALTC2H_CTRL BIT(1)
+#define B_BE_UDM0_DBG_MODE_CTRL BIT(0)
+
+#define R_BE_UDM1 0x01F4
+#define B_BE_UDM1_ERROR_ADDR_MASK GENMASK(31, 16)
+#define B_BE_UDM1_HALMAC_C2H_ENQ_CNT_MASK GENMASK(15, 12)
+#define B_BE_UDM1_HALMAC_H2C_DEQ_CNT_MASK GENMASK(11, 8)
+#define B_BE_UDM1_WCPU_C2H_ENQ_CNT_MASK GENMASK(7, 4)
+#define B_BE_UDM1_WCPU_H2C_DEQ_CNT_MASK GENMASK(3, 0)
+
+#define R_BE_UDM2 0x01F8
+#define B_BE_UDM2_EPC_RA_MASK GENMASK(31, 0)
+
+#define R_BE_DCPU_PLATFORM_ENABLE 0x0888
+#define B_BE_DCPU_SYM_DPLT_MEM_MUX_EN BIT(10)
+#define B_BE_DCPU_WARM_EN BIT(9)
+#define B_BE_DCPU_UART_EN BIT(7)
+#define B_BE_DCPU_IDDMA_EN BIT(6)
+#define B_BE_DCPU_APB_WRAP_EN BIT(2)
+#define B_BE_DCPU_EN BIT(1)
+#define B_BE_DCPU_PLATFORM_EN BIT(0)
+
 #define R_BE_FILTER_MODEL_ADDR 0x0C04
 
+#define R_BE_PLE_DBG_FUN_INTF_CTL 0x9110
+#define B_BE_PLE_DFI_ACTIVE BIT(31)
+#define B_BE_PLE_DFI_TRGSEL_MASK GENMASK(19, 16)
+#define B_BE_PLE_DFI_ADDR_MASK GENMASK(15, 0)
+
+#define R_BE_PLE_DBG_FUN_INTF_DATA 0x9114
+#define B_BE_PLE_DFI_DATA_MASK GENMASK(31, 0)
+
 #define R_BE_RX_FLTR_OPT 0x11420
 #define R_BE_RX_FLTR_OPT_C1 0x15420
 #define B_BE_UID_FILTER_MASK GENMASK(31, 24)