net: aquantia: Introduce support for new firmware on AQC cards

This defines fw2x operations table and corresponding methods.
Some of the functions are being shared with 1.x firmware
Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/aquantia/atlantic/Makefile

@@ -39,4 +39,5 @@ atlantic-objs := aq_main.o \
 	hw_atl/hw_atl_a0.o \
 	hw_atl/hw_atl_b0.o \
 	hw_atl/hw_atl_utils.o \
+	hw_atl/hw_atl_utils_fw2x.o \
 	hw_atl/hw_atl_llh.o

drivers/net/ethernet/aquantia/atlantic/aq_hw.h

@@ -42,7 +42,6 @@ struct aq_hw_caps_s {
 	u8 rx_rings;
 	bool flow_control;
 	bool is_64_dma;
-	u32 fw_ver_expected;
 };
 
 struct aq_hw_link_status_s {

drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c

@@ -32,6 +32,8 @@
 #define HW_ATL_MPI_SPEED_SHIFT  16U
 
 #define HW_ATL_FW_VER_1X 0x01050006U
+#define HW_ATL_FW_VER_2X 0x02000000U
+#define HW_ATL_FW_VER_3X 0x03000000U
 
 static int hw_atl_utils_ver_match(u32 ver_expected, u32 ver_actual);
 
@@ -46,6 +48,12 @@ int hw_atl_utils_initfw(struct aq_hw_s *self, const struct aq_fw_ops **fw_ops)
 
 	if (hw_atl_utils_ver_match(HW_ATL_FW_VER_1X, self->fw_ver_actual) == 0)
 		*fw_ops = &aq_fw_1x_ops;
+	else if (hw_atl_utils_ver_match(HW_ATL_FW_VER_2X,
+					self->fw_ver_actual) == 0)
+		*fw_ops = &aq_fw_2x_ops;
+	else if (hw_atl_utils_ver_match(HW_ATL_FW_VER_3X,
+					self->fw_ver_actual) == 0)
+		*fw_ops = &aq_fw_2x_ops;
 	else {
 		aq_pr_err("Bad FW version detected: %x\n",
 		       self->fw_ver_actual);
@@ -56,7 +64,7 @@ int hw_atl_utils_initfw(struct aq_hw_s *self, const struct aq_fw_ops **fw_ops)
 	return err;
 }
 
-static int hw_atl_utils_fw_downld_dwords(struct aq_hw_s *self, u32 a,
+int hw_atl_utils_fw_downld_dwords(struct aq_hw_s *self, u32 a,
 				  u32 *p, u32 cnt)
 {
 	int err = 0;

drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.h

@@ -180,6 +180,64 @@ enum hal_atl_utils_fw_state_e {
 #define HAL_ATLANTIC_RATE_100M       BIT(5)
 #define HAL_ATLANTIC_RATE_INVALID    BIT(6)
 
+enum hw_atl_fw2x_rate {
+	FW2X_RATE_100M    = 0x20,
+	FW2X_RATE_1G      = 0x100,
+	FW2X_RATE_2G5     = 0x200,
+	FW2X_RATE_5G      = 0x400,
+	FW2X_RATE_10G     = 0x800,
+};
+
+enum hw_atl_fw2x_caps_lo {
+	CAPS_LO_10BASET_HD = 0x00,
+	CAPS_LO_10BASET_FD,
+	CAPS_LO_100BASETX_HD,
+	CAPS_LO_100BASET4_HD,
+	CAPS_LO_100BASET2_HD,
+	CAPS_LO_100BASETX_FD,
+	CAPS_LO_100BASET2_FD,
+	CAPS_LO_1000BASET_HD,
+	CAPS_LO_1000BASET_FD,
+	CAPS_LO_2P5GBASET_FD,
+	CAPS_LO_5GBASET_FD,
+	CAPS_LO_10GBASET_FD,
+};
+
+enum hw_atl_fw2x_caps_hi {
+	CAPS_HI_RESERVED1 = 0x00,
+	CAPS_HI_10BASET_EEE,
+	CAPS_HI_RESERVED2,
+	CAPS_HI_PAUSE,
+	CAPS_HI_ASYMMETRIC_PAUSE,
+	CAPS_HI_100BASETX_EEE,
+	CAPS_HI_RESERVED3,
+	CAPS_HI_RESERVED4,
+	CAPS_HI_1000BASET_FD_EEE,
+	CAPS_HI_2P5GBASET_FD_EEE,
+	CAPS_HI_5GBASET_FD_EEE,
+	CAPS_HI_10GBASET_FD_EEE,
+	CAPS_HI_RESERVED5,
+	CAPS_HI_RESERVED6,
+	CAPS_HI_RESERVED7,
+	CAPS_HI_RESERVED8,
+	CAPS_HI_RESERVED9,
+	CAPS_HI_CABLE_DIAG,
+	CAPS_HI_TEMPERATURE,
+	CAPS_HI_DOWNSHIFT,
+	CAPS_HI_PTP_AVB_EN,
+	CAPS_HI_MEDIA_DETECT,
+	CAPS_HI_LINK_DROP,
+	CAPS_HI_SLEEP_PROXY,
+	CAPS_HI_WOL,
+	CAPS_HI_MAC_STOP,
+	CAPS_HI_EXT_LOOPBACK,
+	CAPS_HI_INT_LOOPBACK,
+	CAPS_HI_EFUSE_AGENT,
+	CAPS_HI_WOL_TIMER,
+	CAPS_HI_STATISTICS,
+	CAPS_HI_TRANSACTION_ID,
+};
+
 struct aq_hw_s;
 struct aq_fw_ops;
 struct aq_hw_caps_s;
@@ -222,7 +280,10 @@ int hw_atl_utils_get_fw_version(struct aq_hw_s *self, u32 *fw_version);
 int hw_atl_utils_update_stats(struct aq_hw_s *self);
 
 struct aq_stats_s *hw_atl_utils_get_hw_stats(struct aq_hw_s *self);
+int hw_atl_utils_fw_downld_dwords(struct aq_hw_s *self, u32 a,
+				  u32 *p, u32 cnt);
 
 extern const struct aq_fw_ops aq_fw_1x_ops;
+extern const struct aq_fw_ops aq_fw_2x_ops;
 
 #endif /* HW_ATL_UTILS_H */

drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils_fw2x.c

+/*
+ * aQuantia Corporation Network Driver
+ * Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ */
+
+/* File hw_atl_utils_fw2x.c: Definition of firmware 2.x functions for
+ * Atlantic hardware abstraction layer.
+ */
+
+#include "../aq_hw.h"
+#include "../aq_hw_utils.h"
+#include "../aq_pci_func.h"
+#include "../aq_ring.h"
+#include "../aq_vec.h"
+#include "hw_atl_utils.h"
+#include "hw_atl_llh.h"
+
+#define HW_ATL_FW2X_MPI_EFUSE_ADDR	0x364
+#define HW_ATL_FW2X_MPI_MBOX_ADDR	0x360
+
+#define HW_ATL_FW2X_MPI_CONTROL_ADDR	0x368
+#define HW_ATL_FW2X_MPI_CONTROL2_ADDR	0x36C
+
+#define HW_ATL_FW2X_MPI_STATE_ADDR	0x370
+#define HW_ATL_FW2X_MPI_STATE2_ADDR	0x374
+
+static int aq_fw2x_init(struct aq_hw_s *self)
+{
+	int err = 0;
+
+	/* check 10 times by 1ms */
+	AQ_HW_WAIT_FOR(0U != (self->mbox_addr =
+			aq_hw_read_reg(self, HW_ATL_FW2X_MPI_MBOX_ADDR)),
+		       1000U, 10U);
+	return err;
+}
+
+static enum hw_atl_fw2x_rate link_speed_mask_2fw2x_ratemask(u32 speed)
+{
+	enum hw_atl_fw2x_rate rate = 0;
+
+	if (speed & AQ_NIC_RATE_10G)
+		rate |= FW2X_RATE_10G;
+
+	if (speed & AQ_NIC_RATE_5G)
+		rate |= FW2X_RATE_5G;
+
+	if (speed & AQ_NIC_RATE_5GSR)
+		rate |= FW2X_RATE_5G;
+
+	if (speed & AQ_NIC_RATE_2GS)
+		rate |= FW2X_RATE_2G5;
+
+	if (speed & AQ_NIC_RATE_1G)
+		rate |= FW2X_RATE_1G;
+
+	if (speed & AQ_NIC_RATE_100M)
+		rate |= FW2X_RATE_100M;
+
+	return rate;
+}
+
+static int aq_fw2x_set_link_speed(struct aq_hw_s *self, u32 speed)
+{
+	u32 val = link_speed_mask_2fw2x_ratemask(speed);
+
+	aq_hw_write_reg(self, HW_ATL_FW2X_MPI_CONTROL_ADDR, val);
+
+	return 0;
+}
+
+static int aq_fw2x_set_state(struct aq_hw_s *self,
+			     enum hal_atl_utils_fw_state_e state)
+{
+	/* No explicit state in 2x fw */
+	return 0;
+}
+
+static int aq_fw2x_update_link_status(struct aq_hw_s *self)
+{
+	u32 mpi_state = aq_hw_read_reg(self, HW_ATL_FW2X_MPI_STATE_ADDR);
+	u32 speed = mpi_state & (FW2X_RATE_100M | FW2X_RATE_1G |
+				FW2X_RATE_2G5 | FW2X_RATE_5G | FW2X_RATE_10G);
+	struct aq_hw_link_status_s *link_status = &self->aq_link_status;
+
+	if (speed) {
+		if (speed & FW2X_RATE_10G)
+			link_status->mbps = 10000;
+		else if (speed & FW2X_RATE_5G)
+			link_status->mbps = 5000;
+		else if (speed & FW2X_RATE_2G5)
+			link_status->mbps = 2500;
+		else if (speed & FW2X_RATE_1G)
+			link_status->mbps = 1000;
+		else if (speed & FW2X_RATE_100M)
+			link_status->mbps = 100;
+		else
+			link_status->mbps = 10000;
+	} else {
+		link_status->mbps = 0;
+	}
+
+	return 0;
+}
+
+int aq_fw2x_get_mac_permanent(struct aq_hw_s *self, u8 *mac)
+{
+	int err = 0;
+	u32 h = 0U;
+	u32 l = 0U;
+	u32 mac_addr[2] = { 0 };
+	u32 efuse_addr = aq_hw_read_reg(self, HW_ATL_FW2X_MPI_EFUSE_ADDR);
+
+	if (efuse_addr != 0) {
+		err = hw_atl_utils_fw_downld_dwords(self,
+						    efuse_addr + (40U * 4U),
+						    mac_addr,
+						    ARRAY_SIZE(mac_addr));
+		if (err)
+			return err;
+		mac_addr[0] = __swab32(mac_addr[0]);
+		mac_addr[1] = __swab32(mac_addr[1]);
+	}
+
+	ether_addr_copy(mac, (u8 *)mac_addr);
+
+	if ((mac[0] & 0x01U) || ((mac[0] | mac[1] | mac[2]) == 0x00U)) {
+		unsigned int rnd = 0;
+
+		get_random_bytes(&rnd, sizeof(unsigned int));
+
+		l = 0xE3000000U
+			| (0xFFFFU & rnd)
+			| (0x00 << 16);
+		h = 0x8001300EU;
+
+		mac[5] = (u8)(0xFFU & l);
+		l >>= 8;
+		mac[4] = (u8)(0xFFU & l);
+		l >>= 8;
+		mac[3] = (u8)(0xFFU & l);
+		l >>= 8;
+		mac[2] = (u8)(0xFFU & l);
+		mac[1] = (u8)(0xFFU & h);
+		h >>= 8;
+		mac[0] = (u8)(0xFFU & h);
+	}
+	return err;
+}
+
+static int aq_fw2x_update_stats(struct aq_hw_s *self)
+{
+	int err = 0;
+	u32 mpi_opts = aq_hw_read_reg(self, HW_ATL_FW2X_MPI_CONTROL2_ADDR);
+	u32 orig_stats_val = mpi_opts & BIT(CAPS_HI_STATISTICS);
+
+	/* Toggle statistics bit for FW to update */
+	mpi_opts = mpi_opts ^ BIT(CAPS_HI_STATISTICS);
+	aq_hw_write_reg(self, HW_ATL_FW2X_MPI_CONTROL2_ADDR, mpi_opts);
+
+	/* Wait FW to report back */
+	AQ_HW_WAIT_FOR(orig_stats_val !=
+		       (aq_hw_read_reg(self, HW_ATL_FW2X_MPI_STATE2_ADDR) &
+				       BIT(CAPS_HI_STATISTICS)),
+		       1U, 10000U);
+	if (err)
+		return err;
+
+	return hw_atl_utils_update_stats(self);
+}
+
+const struct aq_fw_ops aq_fw_2x_ops = {
+	.init = aq_fw2x_init,
+	.reset = NULL,
+	.get_mac_permanent = aq_fw2x_get_mac_permanent,
+	.set_link_speed = aq_fw2x_set_link_speed,
+	.set_state = aq_fw2x_set_state,
+	.update_link_status = aq_fw2x_update_link_status,
+	.update_stats = aq_fw2x_update_stats,
+};