[Arm-dev] [PATCH] QDF2400 Onboard Networking
Christopher Covington
cov at codeaurora.orgMon Dec 19 17:18:40 UTC 2016
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The QDF2400 family of SoCs from Qualcomm Datacenter Technologies has an on-board Gigabit Ethernet port. Include support for this hardware in CentOS AltArch by backporting 17 patches, which as of 2016-12-17 have been accepted into Linus Torvalds upstream repository. The QCA7000 configuration option, revealed by enabling CONFIG_NET_VENDOR_QUALCOMM, is left unset for now, due to lack of hardware on hand for testing. Signed-off-by: Christopher Covington <cov at codeaurora.org> --- SOURCES/4003-net-qcom-emac.patch | 6495 ++++++++++++++++++++++++++++++++++++++ SOURCES/config-centos-sig | 3 + SPECS/kernel-aarch64.spec | 7 +- 3 files changed, 6504 insertions(+), 1 deletion(-) create mode 100644 SOURCES/4003-net-qcom-emac.patch diff --git a/SOURCES/4003-net-qcom-emac.patch b/SOURCES/4003-net-qcom-emac.patch new file mode 100644 index 0000000..45e21f4 --- /dev/null +++ b/SOURCES/4003-net-qcom-emac.patch @@ -0,0 +1,6495 @@ +From 7f42b6c44827bab80dbfc65d23a04f8c45cb14b8 Mon Sep 17 00:00:00 2001 +From: Timur Tabi <timur at codeaurora.org> +Date: Wed, 31 Aug 2016 18:22:08 -0500 +Subject: [PATCH 01/17] net: emac: emac gigabit ethernet controller driver + +Add support for the Qualcomm Technologies, Inc. EMAC gigabit Ethernet +controller. + +This driver supports the following features: +1) Checksum offload. +2) Interrupt coalescing support. +3) SGMII phy. +4) phylib interface for external phy + +Based on original work by + Niranjana Vishwanathapura <nvishwan at codeaurora.org> + Gilad Avidov <gavidov at codeaurora.org> + +Signed-off-by: Timur Tabi <timur at codeaurora.org> +Signed-off-by: David S. Miller <davem at davemloft.net> +(cherry picked from commit b9b17debc69d27cd55e21ee51a5ba7fc50a426cf) +--- + .../devicetree/bindings/net/qcom-emac.txt | 111 ++ + MAINTAINERS | 6 + + drivers/net/ethernet/qualcomm/Kconfig | 12 + + drivers/net/ethernet/qualcomm/Makefile | 2 + + drivers/net/ethernet/qualcomm/emac/Makefile | 7 + + drivers/net/ethernet/qualcomm/emac/emac-mac.c | 1528 ++++++++++++++++++++ + drivers/net/ethernet/qualcomm/emac/emac-mac.h | 248 ++++ + drivers/net/ethernet/qualcomm/emac/emac-phy.c | 204 +++ + drivers/net/ethernet/qualcomm/emac/emac-phy.h | 33 + + drivers/net/ethernet/qualcomm/emac/emac-sgmii.c | 721 +++++++++ + drivers/net/ethernet/qualcomm/emac/emac-sgmii.h | 24 + + drivers/net/ethernet/qualcomm/emac/emac.c | 743 ++++++++++ + drivers/net/ethernet/qualcomm/emac/emac.h | 335 +++++ + 13 files changed, 3974 insertions(+) + create mode 100644 Documentation/devicetree/bindings/net/qcom-emac.txt + create mode 100644 drivers/net/ethernet/qualcomm/emac/Makefile + create mode 100644 drivers/net/ethernet/qualcomm/emac/emac-mac.c + create mode 100644 drivers/net/ethernet/qualcomm/emac/emac-mac.h + create mode 100644 drivers/net/ethernet/qualcomm/emac/emac-phy.c + create mode 100644 drivers/net/ethernet/qualcomm/emac/emac-phy.h + create mode 100644 drivers/net/ethernet/qualcomm/emac/emac-sgmii.c + create mode 100644 drivers/net/ethernet/qualcomm/emac/emac-sgmii.h + create mode 100644 drivers/net/ethernet/qualcomm/emac/emac.c + create mode 100644 drivers/net/ethernet/qualcomm/emac/emac.h + +diff --git a/Documentation/devicetree/bindings/net/qcom-emac.txt b/Documentation/devicetree/bindings/net/qcom-emac.txt +new file mode 100644 +index 0000000..346e6c7 +--- /dev/null ++++ b/Documentation/devicetree/bindings/net/qcom-emac.txt +@@ -0,0 +1,111 @@ ++Qualcomm Technologies EMAC Gigabit Ethernet Controller ++ ++This network controller consists of two devices: a MAC and an SGMII ++internal PHY. Each device is represented by a device tree node. A phandle ++connects the MAC node to its corresponding internal phy node. Another ++phandle points to the external PHY node. ++ ++Required properties: ++ ++MAC node: ++- compatible : Should be "qcom,fsm9900-emac". ++- reg : Offset and length of the register regions for the device ++- interrupts : Interrupt number used by this controller ++- mac-address : The 6-byte MAC address. If present, it is the default ++ MAC address. ++- internal-phy : phandle to the internal PHY node ++- phy-handle : phandle the the external PHY node ++ ++Internal PHY node: ++- compatible : Should be "qcom,fsm9900-emac-sgmii" or "qcom,qdf2432-emac-sgmii". ++- reg : Offset and length of the register region(s) for the device ++- interrupts : Interrupt number used by this controller ++ ++The external phy child node: ++- reg : The phy address ++ ++Example: ++ ++FSM9900: ++ ++soc { ++ #address-cells = <1>; ++ #size-cells = <1>; ++ ++ emac0: ethernet at feb20000 { ++ compatible = "qcom,fsm9900-emac"; ++ reg = <0xfeb20000 0x10000>, ++ <0xfeb36000 0x1000>; ++ interrupts = <76>; ++ ++ clocks = <&gcc 0>, <&gcc 1>, <&gcc 3>, <&gcc 4>, <&gcc 5>, ++ <&gcc 6>, <&gcc 7>; ++ clock-names = "axi_clk", "cfg_ahb_clk", "high_speed_clk", ++ "mdio_clk", "tx_clk", "rx_clk", "sys_clk"; ++ ++ internal-phy = <&emac_sgmii>; ++ ++ phy-handle = <&phy0>; ++ ++ #address-cells = <1>; ++ #size-cells = <0>; ++ phy0: ethernet-phy at 0 { ++ reg = <0>; ++ }; ++ ++ pinctrl-names = "default"; ++ pinctrl-0 = <&mdio_pins_a>; ++ }; ++ ++ emac_sgmii: ethernet at feb38000 { ++ compatible = "qcom,fsm9900-emac-sgmii"; ++ reg = <0xfeb38000 0x1000>; ++ interrupts = <80>; ++ }; ++ ++ tlmm: pinctrl at fd510000 { ++ compatible = "qcom,fsm9900-pinctrl"; ++ ++ mdio_pins_a: mdio { ++ state { ++ pins = "gpio123", "gpio124"; ++ function = "mdio"; ++ }; ++ }; ++ }; ++ ++ ++QDF2432: ++ ++soc { ++ #address-cells = <2>; ++ #size-cells = <2>; ++ ++ emac0: ethernet at 38800000 { ++ compatible = "qcom,fsm9900-emac"; ++ reg = <0x0 0x38800000 0x0 0x10000>, ++ <0x0 0x38816000 0x0 0x1000>; ++ interrupts = <0 256 4>; ++ ++ clocks = <&gcc 0>, <&gcc 1>, <&gcc 3>, <&gcc 4>, <&gcc 5>, ++ <&gcc 6>, <&gcc 7>; ++ clock-names = "axi_clk", "cfg_ahb_clk", "high_speed_clk", ++ "mdio_clk", "tx_clk", "rx_clk", "sys_clk"; ++ ++ internal-phy = <&emac_sgmii>; ++ ++ phy-handle = <&phy0>; ++ ++ #address-cells = <1>; ++ #size-cells = <0>; ++ phy0: ethernet-phy at 4 { ++ reg = <4>; ++ }; ++ }; ++ ++ emac_sgmii: ethernet at 410400 { ++ compatible = "qcom,qdf2432-emac-sgmii"; ++ reg = <0x0 0x00410400 0x0 0xc00>, /* Base address */ ++ <0x0 0x00410000 0x0 0x400>; /* Per-lane digital */ ++ interrupts = <0 254 1>; ++ }; +diff --git a/MAINTAINERS b/MAINTAINERS +index 5e20026..3e43b25 100644 +--- a/MAINTAINERS ++++ b/MAINTAINERS +@@ -8999,6 +8999,12 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git + S: Supported + F: drivers/net/wireless/ath/ath10k/ + ++QUALCOMM EMAC GIGABIT ETHERNET DRIVER ++M: Timur Tabi <timur at codeaurora.org> ++L: netdev at vger.kernel.org ++S: Supported ++F: drivers/net/ethernet/qualcomm/emac/ ++ + QUALCOMM HEXAGON ARCHITECTURE + M: Richard Kuo <rkuo at codeaurora.org> + L: linux-hexagon at vger.kernel.org +diff --git a/drivers/net/ethernet/qualcomm/Kconfig b/drivers/net/ethernet/qualcomm/Kconfig +index a76e380..9ba568d 100644 +--- a/drivers/net/ethernet/qualcomm/Kconfig ++++ b/drivers/net/ethernet/qualcomm/Kconfig +@@ -24,4 +24,16 @@ config QCA7000 + To compile this driver as a module, choose M here. The module + will be called qcaspi. + ++config QCOM_EMAC ++ tristate "Qualcomm Technologies, Inc. EMAC Gigabit Ethernet support" ++ select CRC32 ++ select PHYLIB ++ ---help--- ++ This driver supports the Qualcomm Technologies, Inc. Gigabit ++ Ethernet Media Access Controller (EMAC). The controller ++ supports IEEE 802.3-2002, half-duplex mode at 10/100 Mb/s, ++ full-duplex mode at 10/100/1000Mb/s, Wake On LAN (WOL) for ++ low power, Receive-Side Scaling (RSS), and IEEE 1588-2008 ++ Precision Clock Synchronization Protocol. ++ + endif # NET_VENDOR_QUALCOMM +diff --git a/drivers/net/ethernet/qualcomm/Makefile b/drivers/net/ethernet/qualcomm/Makefile +index 9da2d75..aacb0a5 100644 +--- a/drivers/net/ethernet/qualcomm/Makefile ++++ b/drivers/net/ethernet/qualcomm/Makefile +@@ -4,3 +4,5 @@ + + obj-$(CONFIG_QCA7000) += qcaspi.o + qcaspi-objs := qca_spi.o qca_framing.o qca_7k.o qca_debug.o ++ ++obj-y += emac/ +diff --git a/drivers/net/ethernet/qualcomm/emac/Makefile b/drivers/net/ethernet/qualcomm/emac/Makefile +new file mode 100644 +index 0000000..01ee144 +--- /dev/null ++++ b/drivers/net/ethernet/qualcomm/emac/Makefile +@@ -0,0 +1,7 @@ ++# ++# Makefile for the Qualcomm Technologies, Inc. EMAC Gigabit Ethernet driver ++# ++ ++obj-$(CONFIG_QCOM_EMAC) += qcom-emac.o ++ ++qcom-emac-objs := emac.o emac-mac.o emac-phy.o emac-sgmii.o +diff --git a/drivers/net/ethernet/qualcomm/emac/emac-mac.c b/drivers/net/ethernet/qualcomm/emac/emac-mac.c +new file mode 100644 +index 0000000..e97968e +--- /dev/null ++++ b/drivers/net/ethernet/qualcomm/emac/emac-mac.c +@@ -0,0 +1,1528 @@ ++/* Copyright (c) 2013-2016, The Linux Foundation. All rights reserved. ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 and ++ * only version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++/* Qualcomm Technologies, Inc. EMAC Ethernet Controller MAC layer support ++ */ ++ ++#include <linux/tcp.h> ++#include <linux/ip.h> ++#include <linux/ipv6.h> ++#include <linux/crc32.h> ++#include <linux/if_vlan.h> ++#include <linux/jiffies.h> ++#include <linux/phy.h> ++#include <linux/of.h> ++#include <net/ip6_checksum.h> ++#include "emac.h" ++#include "emac-sgmii.h" ++ ++/* EMAC base register offsets */ ++#define EMAC_MAC_CTRL 0x001480 ++#define EMAC_WOL_CTRL0 0x0014a0 ++#define EMAC_RSS_KEY0 0x0014b0 ++#define EMAC_H1TPD_BASE_ADDR_LO 0x0014e0 ++#define EMAC_H2TPD_BASE_ADDR_LO 0x0014e4 ++#define EMAC_H3TPD_BASE_ADDR_LO 0x0014e8 ++#define EMAC_INTER_SRAM_PART9 0x001534 ++#define EMAC_DESC_CTRL_0 0x001540 ++#define EMAC_DESC_CTRL_1 0x001544 ++#define EMAC_DESC_CTRL_2 0x001550 ++#define EMAC_DESC_CTRL_10 0x001554 ++#define EMAC_DESC_CTRL_12 0x001558 ++#define EMAC_DESC_CTRL_13 0x00155c ++#define EMAC_DESC_CTRL_3 0x001560 ++#define EMAC_DESC_CTRL_4 0x001564 ++#define EMAC_DESC_CTRL_5 0x001568 ++#define EMAC_DESC_CTRL_14 0x00156c ++#define EMAC_DESC_CTRL_15 0x001570 ++#define EMAC_DESC_CTRL_16 0x001574 ++#define EMAC_DESC_CTRL_6 0x001578 ++#define EMAC_DESC_CTRL_8 0x001580 ++#define EMAC_DESC_CTRL_9 0x001584 ++#define EMAC_DESC_CTRL_11 0x001588 ++#define EMAC_TXQ_CTRL_0 0x001590 ++#define EMAC_TXQ_CTRL_1 0x001594 ++#define EMAC_TXQ_CTRL_2 0x001598 ++#define EMAC_RXQ_CTRL_0 0x0015a0 ++#define EMAC_RXQ_CTRL_1 0x0015a4 ++#define EMAC_RXQ_CTRL_2 0x0015a8 ++#define EMAC_RXQ_CTRL_3 0x0015ac ++#define EMAC_BASE_CPU_NUMBER 0x0015b8 ++#define EMAC_DMA_CTRL 0x0015c0 ++#define EMAC_MAILBOX_0 0x0015e0 ++#define EMAC_MAILBOX_5 0x0015e4 ++#define EMAC_MAILBOX_6 0x0015e8 ++#define EMAC_MAILBOX_13 0x0015ec ++#define EMAC_MAILBOX_2 0x0015f4 ++#define EMAC_MAILBOX_3 0x0015f8 ++#define EMAC_MAILBOX_11 0x00160c ++#define EMAC_AXI_MAST_CTRL 0x001610 ++#define EMAC_MAILBOX_12 0x001614 ++#define EMAC_MAILBOX_9 0x001618 ++#define EMAC_MAILBOX_10 0x00161c ++#define EMAC_ATHR_HEADER_CTRL 0x001620 ++#define EMAC_CLK_GATE_CTRL 0x001814 ++#define EMAC_MISC_CTRL 0x001990 ++#define EMAC_MAILBOX_7 0x0019e0 ++#define EMAC_MAILBOX_8 0x0019e4 ++#define EMAC_MAILBOX_15 0x001bd4 ++#define EMAC_MAILBOX_16 0x001bd8 ++ ++/* EMAC_MAC_CTRL */ ++#define SINGLE_PAUSE_MODE 0x10000000 ++#define DEBUG_MODE 0x08000000 ++#define BROAD_EN 0x04000000 ++#define MULTI_ALL 0x02000000 ++#define RX_CHKSUM_EN 0x01000000 ++#define HUGE 0x00800000 ++#define SPEED(x) (((x) & 0x3) << 20) ++#define SPEED_MASK SPEED(0x3) ++#define SIMR 0x00080000 ++#define TPAUSE 0x00010000 ++#define PROM_MODE 0x00008000 ++#define VLAN_STRIP 0x00004000 ++#define PRLEN_BMSK 0x00003c00 ++#define PRLEN_SHFT 10 ++#define HUGEN 0x00000200 ++#define FLCHK 0x00000100 ++#define PCRCE 0x00000080 ++#define CRCE 0x00000040 ++#define FULLD 0x00000020 ++#define MAC_LP_EN 0x00000010 ++#define RXFC 0x00000008 ++#define TXFC 0x00000004 ++#define RXEN 0x00000002 ++#define TXEN 0x00000001 ++ ++ ++/* EMAC_WOL_CTRL0 */ ++#define LK_CHG_PME 0x20 ++#define LK_CHG_EN 0x10 ++#define MG_FRAME_PME 0x8 ++#define MG_FRAME_EN 0x4 ++#define WK_FRAME_EN 0x1 ++ ++/* EMAC_DESC_CTRL_3 */ ++#define RFD_RING_SIZE_BMSK 0xfff ++ ++/* EMAC_DESC_CTRL_4 */ ++#define RX_BUFFER_SIZE_BMSK 0xffff ++ ++/* EMAC_DESC_CTRL_6 */ ++#define RRD_RING_SIZE_BMSK 0xfff ++ ++/* EMAC_DESC_CTRL_9 */ ++#define TPD_RING_SIZE_BMSK 0xffff ++ ++/* EMAC_TXQ_CTRL_0 */ ++#define NUM_TXF_BURST_PREF_BMSK 0xffff0000 ++#define NUM_TXF_BURST_PREF_SHFT 16 ++#define LS_8023_SP 0x80 ++#define TXQ_MODE 0x40 ++#define TXQ_EN 0x20 ++#define IP_OP_SP 0x10 ++#define NUM_TPD_BURST_PREF_BMSK 0xf ++#define NUM_TPD_BURST_PREF_SHFT 0 ++ ++/* EMAC_TXQ_CTRL_1 */ ++#define JUMBO_TASK_OFFLOAD_THRESHOLD_BMSK 0x7ff ++ ++/* EMAC_TXQ_CTRL_2 */ ++#define TXF_HWM_BMSK 0xfff0000 ++#define TXF_LWM_BMSK 0xfff ++ ++/* EMAC_RXQ_CTRL_0 */ ++#define RXQ_EN BIT(31) ++#define CUT_THRU_EN BIT(30) ++#define RSS_HASH_EN BIT(29) ++#define NUM_RFD_BURST_PREF_BMSK 0x3f00000 ++#define NUM_RFD_BURST_PREF_SHFT 20 ++#define IDT_TABLE_SIZE_BMSK 0x1ff00 ++#define IDT_TABLE_SIZE_SHFT 8 ++#define SP_IPV6 0x80 ++ ++/* EMAC_RXQ_CTRL_1 */ ++#define JUMBO_1KAH_BMSK 0xf000 ++#define JUMBO_1KAH_SHFT 12 ++#define RFD_PREF_LOW_TH 0x10 ++#define RFD_PREF_LOW_THRESHOLD_BMSK 0xfc0 ++#define RFD_PREF_LOW_THRESHOLD_SHFT 6 ++#define RFD_PREF_UP_TH 0x10 ++#define RFD_PREF_UP_THRESHOLD_BMSK 0x3f ++#define RFD_PREF_UP_THRESHOLD_SHFT 0 ++ ++/* EMAC_RXQ_CTRL_2 */ ++#define RXF_DOF_THRESFHOLD 0x1a0 ++#define RXF_DOF_THRESHOLD_BMSK 0xfff0000 ++#define RXF_DOF_THRESHOLD_SHFT 16 ++#define RXF_UOF_THRESFHOLD 0xbe ++#define RXF_UOF_THRESHOLD_BMSK 0xfff ++#define RXF_UOF_THRESHOLD_SHFT 0 ++ ++/* EMAC_RXQ_CTRL_3 */ ++#define RXD_TIMER_BMSK 0xffff0000 ++#define RXD_THRESHOLD_BMSK 0xfff ++#define RXD_THRESHOLD_SHFT 0 ++ ++/* EMAC_DMA_CTRL */ ++#define DMAW_DLY_CNT_BMSK 0xf0000 ++#define DMAW_DLY_CNT_SHFT 16 ++#define DMAR_DLY_CNT_BMSK 0xf800 ++#define DMAR_DLY_CNT_SHFT 11 ++#define DMAR_REQ_PRI 0x400 ++#define REGWRBLEN_BMSK 0x380 ++#define REGWRBLEN_SHFT 7 ++#define REGRDBLEN_BMSK 0x70 ++#define REGRDBLEN_SHFT 4 ++#define OUT_ORDER_MODE 0x4 ++#define ENH_ORDER_MODE 0x2 ++#define IN_ORDER_MODE 0x1 ++ ++/* EMAC_MAILBOX_13 */ ++#define RFD3_PROC_IDX_BMSK 0xfff0000 ++#define RFD3_PROC_IDX_SHFT 16 ++#define RFD3_PROD_IDX_BMSK 0xfff ++#define RFD3_PROD_IDX_SHFT 0 ++ ++/* EMAC_MAILBOX_2 */ ++#define NTPD_CONS_IDX_BMSK 0xffff0000 ++#define NTPD_CONS_IDX_SHFT 16 ++ ++/* EMAC_MAILBOX_3 */ ++#define RFD0_CONS_IDX_BMSK 0xfff ++#define RFD0_CONS_IDX_SHFT 0 ++ ++/* EMAC_MAILBOX_11 */ ++#define H3TPD_PROD_IDX_BMSK 0xffff0000 ++#define H3TPD_PROD_IDX_SHFT 16 ++ ++/* EMAC_AXI_MAST_CTRL */ ++#define DATA_BYTE_SWAP 0x8 ++#define MAX_BOUND 0x2 ++#define MAX_BTYPE 0x1 ++ ++/* EMAC_MAILBOX_12 */ ++#define H3TPD_CONS_IDX_BMSK 0xffff0000 ++#define H3TPD_CONS_IDX_SHFT 16 ++ ++/* EMAC_MAILBOX_9 */ ++#define H2TPD_PROD_IDX_BMSK 0xffff ++#define H2TPD_PROD_IDX_SHFT 0 ++ ++/* EMAC_MAILBOX_10 */ ++#define H1TPD_CONS_IDX_BMSK 0xffff0000 ++#define H1TPD_CONS_IDX_SHFT 16 ++#define H2TPD_CONS_IDX_BMSK 0xffff ++#define H2TPD_CONS_IDX_SHFT 0 ++ ++/* EMAC_ATHR_HEADER_CTRL */ ++#define HEADER_CNT_EN 0x2 ++#define HEADER_ENABLE 0x1 ++ ++/* EMAC_MAILBOX_0 */ ++#define RFD0_PROC_IDX_BMSK 0xfff0000 ++#define RFD0_PROC_IDX_SHFT 16 ++#define RFD0_PROD_IDX_BMSK 0xfff ++#define RFD0_PROD_IDX_SHFT 0 ++ ++/* EMAC_MAILBOX_5 */ ++#define RFD1_PROC_IDX_BMSK 0xfff0000 ++#define RFD1_PROC_IDX_SHFT 16 ++#define RFD1_PROD_IDX_BMSK 0xfff ++#define RFD1_PROD_IDX_SHFT 0 ++ ++/* EMAC_MISC_CTRL */ ++#define RX_UNCPL_INT_EN 0x1 ++ ++/* EMAC_MAILBOX_7 */ ++#define RFD2_CONS_IDX_BMSK 0xfff0000 ++#define RFD2_CONS_IDX_SHFT 16 ++#define RFD1_CONS_IDX_BMSK 0xfff ++#define RFD1_CONS_IDX_SHFT 0 ++ ++/* EMAC_MAILBOX_8 */ ++#define RFD3_CONS_IDX_BMSK 0xfff ++#define RFD3_CONS_IDX_SHFT 0 ++ ++/* EMAC_MAILBOX_15 */ ++#define NTPD_PROD_IDX_BMSK 0xffff ++#define NTPD_PROD_IDX_SHFT 0 ++ ++/* EMAC_MAILBOX_16 */ ++#define H1TPD_PROD_IDX_BMSK 0xffff ++#define H1TPD_PROD_IDX_SHFT 0 ++ ++#define RXQ0_RSS_HSTYP_IPV6_TCP_EN 0x20 ++#define RXQ0_RSS_HSTYP_IPV6_EN 0x10 ++#define RXQ0_RSS_HSTYP_IPV4_TCP_EN 0x8 ++#define RXQ0_RSS_HSTYP_IPV4_EN 0x4 ++ ++/* EMAC_EMAC_WRAPPER_TX_TS_INX */ ++#define EMAC_WRAPPER_TX_TS_EMPTY BIT(31) ++#define EMAC_WRAPPER_TX_TS_INX_BMSK 0xffff ++ ++struct emac_skb_cb { ++ u32 tpd_idx; ++ unsigned long jiffies; ++}; ++ ++#define EMAC_SKB_CB(skb) ((struct emac_skb_cb *)(skb)->cb) ++#define EMAC_RSS_IDT_SIZE 256 ++#define JUMBO_1KAH 0x4 ++#define RXD_TH 0x100 ++#define EMAC_TPD_LAST_FRAGMENT 0x80000000 ++#define EMAC_TPD_TSTAMP_SAVE 0x80000000 ++ ++/* EMAC Errors in emac_rrd.word[3] */ ++#define EMAC_RRD_L4F BIT(14) ++#define EMAC_RRD_IPF BIT(15) ++#define EMAC_RRD_CRC BIT(21) ++#define EMAC_RRD_FAE BIT(22) ++#define EMAC_RRD_TRN BIT(23) ++#define EMAC_RRD_RNT BIT(24) ++#define EMAC_RRD_INC BIT(25) ++#define EMAC_RRD_FOV BIT(29) ++#define EMAC_RRD_LEN BIT(30) ++ ++/* Error bits that will result in a received frame being discarded */ ++#define EMAC_RRD_ERROR (EMAC_RRD_IPF | EMAC_RRD_CRC | EMAC_RRD_FAE | \ ++ EMAC_RRD_TRN | EMAC_RRD_RNT | EMAC_RRD_INC | \ ++ EMAC_RRD_FOV | EMAC_RRD_LEN) ++#define EMAC_RRD_STATS_DW_IDX 3 ++ ++#define EMAC_RRD(RXQ, SIZE, IDX) ((RXQ)->rrd.v_addr + (SIZE * (IDX))) ++#define EMAC_RFD(RXQ, SIZE, IDX) ((RXQ)->rfd.v_addr + (SIZE * (IDX))) ++#define EMAC_TPD(TXQ, SIZE, IDX) ((TXQ)->tpd.v_addr + (SIZE * (IDX))) ++ ++#define GET_RFD_BUFFER(RXQ, IDX) (&((RXQ)->rfd.rfbuff[(IDX)])) ++#define GET_TPD_BUFFER(RTQ, IDX) (&((RTQ)->tpd.tpbuff[(IDX)])) ++ ++#define EMAC_TX_POLL_HWTXTSTAMP_THRESHOLD 8 ++ ++#define ISR_RX_PKT (\ ++ RX_PKT_INT0 |\ ++ RX_PKT_INT1 |\ ++ RX_PKT_INT2 |\ ++ RX_PKT_INT3) ++ ++#define EMAC_MAC_IRQ_RES "core0" ++ ++void emac_mac_multicast_addr_set(struct emac_adapter *adpt, u8 *addr) ++{ ++ u32 crc32, bit, reg, mta; ++ ++ /* Calculate the CRC of the MAC address */ ++ crc32 = ether_crc(ETH_ALEN, addr); ++ ++ /* The HASH Table is an array of 2 32-bit registers. It is ++ * treated like an array of 64 bits (BitArray[hash_value]). ++ * Use the upper 6 bits of the above CRC as the hash value. ++ */ ++ reg = (crc32 >> 31) & 0x1; ++ bit = (crc32 >> 26) & 0x1F; ++ ++ mta = readl(adpt->base + EMAC_HASH_TAB_REG0 + (reg << 2)); ++ mta |= BIT(bit); ++ writel(mta, adpt->base + EMAC_HASH_TAB_REG0 + (reg << 2)); ++} ++ ++void emac_mac_multicast_addr_clear(struct emac_adapter *adpt) ++{ ++ writel(0, adpt->base + EMAC_HASH_TAB_REG0); ++ writel(0, adpt->base + EMAC_HASH_TAB_REG1); ++} ++ ++/* definitions for RSS */ ++#define EMAC_RSS_KEY(_i, _type) \ ++ (EMAC_RSS_KEY0 + ((_i) * sizeof(_type))) ++#define EMAC_RSS_TBL(_i, _type) \ ++ (EMAC_IDT_TABLE0 + ((_i) * sizeof(_type))) ++ ++/* Config MAC modes */ ++void emac_mac_mode_config(struct emac_adapter *adpt) ++{ ++ struct net_device *netdev = adpt->netdev; ++ u32 mac; ++ ++ mac = readl(adpt->base + EMAC_MAC_CTRL); ++ mac &= ~(VLAN_STRIP | PROM_MODE | MULTI_ALL | MAC_LP_EN); ++ ++ if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX) ++ mac |= VLAN_STRIP; ++ ++ if (netdev->flags & IFF_PROMISC) ++ mac |= PROM_MODE; ++ ++ if (netdev->flags & IFF_ALLMULTI) ++ mac |= MULTI_ALL; ++ ++ writel(mac, adpt->base + EMAC_MAC_CTRL); ++} ++ ++/* Config descriptor rings */ ++static void emac_mac_dma_rings_config(struct emac_adapter *adpt) ++{ ++ static const unsigned short tpd_q_offset[] = { ++ EMAC_DESC_CTRL_8, EMAC_H1TPD_BASE_ADDR_LO, ++ EMAC_H2TPD_BASE_ADDR_LO, EMAC_H3TPD_BASE_ADDR_LO}; ++ static const unsigned short rfd_q_offset[] = { ++ EMAC_DESC_CTRL_2, EMAC_DESC_CTRL_10, ++ EMAC_DESC_CTRL_12, EMAC_DESC_CTRL_13}; ++ static const unsigned short rrd_q_offset[] = { ++ EMAC_DESC_CTRL_5, EMAC_DESC_CTRL_14, ++ EMAC_DESC_CTRL_15, EMAC_DESC_CTRL_16}; ++ ++ /* TPD (Transmit Packet Descriptor) */ ++ writel(upper_32_bits(adpt->tx_q.tpd.dma_addr), ++ adpt->base + EMAC_DESC_CTRL_1); ++ ++ writel(lower_32_bits(adpt->tx_q.tpd.dma_addr), ++ adpt->base + tpd_q_offset[0]); ++ ++ writel(adpt->tx_q.tpd.count & TPD_RING_SIZE_BMSK, ++ adpt->base + EMAC_DESC_CTRL_9); ++ ++ /* RFD (Receive Free Descriptor) & RRD (Receive Return Descriptor) */ ++ writel(upper_32_bits(adpt->rx_q.rfd.dma_addr), ++ adpt->base + EMAC_DESC_CTRL_0); ++ ++ writel(lower_32_bits(adpt->rx_q.rfd.dma_addr), ++ adpt->base + rfd_q_offset[0]); ++ writel(lower_32_bits(adpt->rx_q.rrd.dma_addr), ++ adpt->base + rrd_q_offset[0]); ++ ++ writel(adpt->rx_q.rfd.count & RFD_RING_SIZE_BMSK, ++ adpt->base + EMAC_DESC_CTRL_3); ++ writel(adpt->rx_q.rrd.count & RRD_RING_SIZE_BMSK, ++ adpt->base + EMAC_DESC_CTRL_6); ++ ++ writel(adpt->rxbuf_size & RX_BUFFER_SIZE_BMSK, ++ adpt->base + EMAC_DESC_CTRL_4); ++ ++ writel(0, adpt->base + EMAC_DESC_CTRL_11); ++ ++ /* Load all of the base addresses above and ensure that triggering HW to ++ * read ring pointers is flushed ++ */ ++ writel(1, adpt->base + EMAC_INTER_SRAM_PART9); ++} ++ ++/* Config transmit parameters */ ++static void emac_mac_tx_config(struct emac_adapter *adpt) ++{ ++ u32 val; ++ ++ writel((EMAC_MAX_TX_OFFLOAD_THRESH >> 3) & ++ JUMBO_TASK_OFFLOAD_THRESHOLD_BMSK, adpt->base + EMAC_TXQ_CTRL_1); ++ ++ val = (adpt->tpd_burst << NUM_TPD_BURST_PREF_SHFT) & ++ NUM_TPD_BURST_PREF_BMSK; ++ ++ val |= TXQ_MODE | LS_8023_SP; ++ val |= (0x0100 << NUM_TXF_BURST_PREF_SHFT) & ++ NUM_TXF_BURST_PREF_BMSK; ++ ++ writel(val, adpt->base + EMAC_TXQ_CTRL_0); ++ emac_reg_update32(adpt->base + EMAC_TXQ_CTRL_2, ++ (TXF_HWM_BMSK | TXF_LWM_BMSK), 0); ++} ++ ++/* Config receive parameters */ ++static void emac_mac_rx_config(struct emac_adapter *adpt) ++{ ++ u32 val; ++ ++ val = (adpt->rfd_burst << NUM_RFD_BURST_PREF_SHFT) & ++ NUM_RFD_BURST_PREF_BMSK; ++ val |= (SP_IPV6 | CUT_THRU_EN); ++ ++ writel(val, adpt->base + EMAC_RXQ_CTRL_0); ++ ++ val = readl(adpt->base + EMAC_RXQ_CTRL_1); ++ val &= ~(JUMBO_1KAH_BMSK | RFD_PREF_LOW_THRESHOLD_BMSK | ++ RFD_PREF_UP_THRESHOLD_BMSK); ++ val |= (JUMBO_1KAH << JUMBO_1KAH_SHFT) | ++ (RFD_PREF_LOW_TH << RFD_PREF_LOW_THRESHOLD_SHFT) | ++ (RFD_PREF_UP_TH << RFD_PREF_UP_THRESHOLD_SHFT); ++ writel(val, adpt->base + EMAC_RXQ_CTRL_1); ++ ++ val = readl(adpt->base + EMAC_RXQ_CTRL_2); ++ val &= ~(RXF_DOF_THRESHOLD_BMSK | RXF_UOF_THRESHOLD_BMSK); ++ val |= (RXF_DOF_THRESFHOLD << RXF_DOF_THRESHOLD_SHFT) | ++ (RXF_UOF_THRESFHOLD << RXF_UOF_THRESHOLD_SHFT); ++ writel(val, adpt->base + EMAC_RXQ_CTRL_2); ++ ++ val = readl(adpt->base + EMAC_RXQ_CTRL_3); ++ val &= ~(RXD_TIMER_BMSK | RXD_THRESHOLD_BMSK); ++ val |= RXD_TH << RXD_THRESHOLD_SHFT; ++ writel(val, adpt->base + EMAC_RXQ_CTRL_3); ++} ++ ++/* Config dma */ ++static void emac_mac_dma_config(struct emac_adapter *adpt) ++{ ++ u32 dma_ctrl = DMAR_REQ_PRI; ++ ++ switch (adpt->dma_order) { ++ case emac_dma_ord_in: ++ dma_ctrl |= IN_ORDER_MODE; ++ break; ++ case emac_dma_ord_enh: ++ dma_ctrl |= ENH_ORDER_MODE; ++ break; ++ case emac_dma_ord_out: ++ dma_ctrl |= OUT_ORDER_MODE; ++ break; ++ default: ++ break; ++ } ++ ++ dma_ctrl |= (((u32)adpt->dmar_block) << REGRDBLEN_SHFT) & ++ REGRDBLEN_BMSK; ++ dma_ctrl |= (((u32)adpt->dmaw_block) << REGWRBLEN_SHFT) & ++ REGWRBLEN_BMSK; ++ dma_ctrl |= (((u32)adpt->dmar_dly_cnt) << DMAR_DLY_CNT_SHFT) & ++ DMAR_DLY_CNT_BMSK; ++ dma_ctrl |= (((u32)adpt->dmaw_dly_cnt) << DMAW_DLY_CNT_SHFT) & ++ DMAW_DLY_CNT_BMSK; ++ ++ /* config DMA and ensure that configuration is flushed to HW */ ++ writel(dma_ctrl, adpt->base + EMAC_DMA_CTRL); ++} ++ ++/* set MAC address */ ++static void emac_set_mac_address(struct emac_adapter *adpt, u8 *addr) ++{ ++ u32 sta; ++ ++ /* for example: 00-A0-C6-11-22-33 ++ * 0<-->C6112233, 1<-->00A0. ++ */ ++ ++ /* low 32bit word */ ++ sta = (((u32)addr[2]) << 24) | (((u32)addr[3]) << 16) | ++ (((u32)addr[4]) << 8) | (((u32)addr[5])); ++ writel(sta, adpt->base + EMAC_MAC_STA_ADDR0); ++ ++ /* hight 32bit word */ ++ sta = (((u32)addr[0]) << 8) | (u32)addr[1]; ++ writel(sta, adpt->base + EMAC_MAC_STA_ADDR1); ++} ++ ++static void emac_mac_config(struct emac_adapter *adpt) ++{ ++ struct net_device *netdev = adpt->netdev; ++ unsigned int max_frame; ++ u32 val; ++ ++ emac_set_mac_address(adpt, netdev->dev_addr); ++ ++ max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; ++ adpt->rxbuf_size = netdev->mtu > EMAC_DEF_RX_BUF_SIZE ? ++ ALIGN(max_frame, 8) : EMAC_DEF_RX_BUF_SIZE; ++ ++ emac_mac_dma_rings_config(adpt); ++ ++ writel(netdev->mtu + ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN, ++ adpt->base + EMAC_MAX_FRAM_LEN_CTRL); ++ ++ emac_mac_tx_config(adpt); ++ emac_mac_rx_config(adpt); ++ emac_mac_dma_config(adpt); ++ ++ val = readl(adpt->base + EMAC_AXI_MAST_CTRL); ++ val &= ~(DATA_BYTE_SWAP | MAX_BOUND); ++ val |= MAX_BTYPE; ++ writel(val, adpt->base + EMAC_AXI_MAST_CTRL); ++ writel(0, adpt->base + EMAC_CLK_GATE_CTRL); ++ writel(RX_UNCPL_INT_EN, adpt->base + EMAC_MISC_CTRL); ++} ++ ++void emac_mac_reset(struct emac_adapter *adpt) ++{ ++ emac_mac_stop(adpt); ++ ++ emac_reg_update32(adpt->base + EMAC_DMA_MAS_CTRL, 0, SOFT_RST); ++ usleep_range(100, 150); /* reset may take up to 100usec */ ++ ++ /* interrupt clear-on-read */ ++ emac_reg_update32(adpt->base + EMAC_DMA_MAS_CTRL, 0, INT_RD_CLR_EN); ++} ++ ++void emac_mac_start(struct emac_adapter *adpt) ++{ ++ struct phy_device *phydev = adpt->phydev; ++ u32 mac, csr1; ++ ++ /* enable tx queue */ ++ emac_reg_update32(adpt->base + EMAC_TXQ_CTRL_0, 0, TXQ_EN); ++ ++ /* enable rx queue */ ++ emac_reg_update32(adpt->base + EMAC_RXQ_CTRL_0, 0, RXQ_EN); ++ ++ /* enable mac control */ ++ mac = readl(adpt->base + EMAC_MAC_CTRL); ++ csr1 = readl(adpt->csr + EMAC_EMAC_WRAPPER_CSR1); ++ ++ mac |= TXEN | RXEN; /* enable RX/TX */ ++ ++ /* We don't have ethtool support yet, so force flow-control mode ++ * to 'full' always. ++ */ ++ mac |= TXFC | RXFC; ++ ++ /* setup link speed */ ++ mac &= ~SPEED_MASK; ++ if (phydev->speed == SPEED_1000) { ++ mac |= SPEED(2); ++ csr1 |= FREQ_MODE; ++ } else { ++ mac |= SPEED(1); ++ csr1 &= ~FREQ_MODE; ++ } ++ ++ if (phydev->duplex == DUPLEX_FULL) ++ mac |= FULLD; ++ else ++ mac &= ~FULLD; ++ ++ /* other parameters */ ++ mac |= (CRCE | PCRCE); ++ mac |= ((adpt->preamble << PRLEN_SHFT) & PRLEN_BMSK); ++ mac |= BROAD_EN; ++ mac |= FLCHK; ++ mac &= ~RX_CHKSUM_EN; ++ mac &= ~(HUGEN | VLAN_STRIP | TPAUSE | SIMR | HUGE | MULTI_ALL | ++ DEBUG_MODE | SINGLE_PAUSE_MODE); ++ ++ writel_relaxed(csr1, adpt->csr + EMAC_EMAC_WRAPPER_CSR1); ++ ++ writel_relaxed(mac, adpt->base + EMAC_MAC_CTRL); ++ ++ /* enable interrupt read clear, low power sleep mode and ++ * the irq moderators ++ */ ++ ++ writel_relaxed(adpt->irq_mod, adpt->base + EMAC_IRQ_MOD_TIM_INIT); ++ writel_relaxed(INT_RD_CLR_EN | LPW_MODE | IRQ_MODERATOR_EN | ++ IRQ_MODERATOR2_EN, adpt->base + EMAC_DMA_MAS_CTRL); ++ ++ emac_mac_mode_config(adpt); ++ ++ emac_reg_update32(adpt->base + EMAC_ATHR_HEADER_CTRL, ++ (HEADER_ENABLE | HEADER_CNT_EN), 0); ++ ++ emac_reg_update32(adpt->csr + EMAC_EMAC_WRAPPER_CSR2, 0, WOL_EN); ++} ++ ++void emac_mac_stop(struct emac_adapter *adpt) ++{ ++ emac_reg_update32(adpt->base + EMAC_RXQ_CTRL_0, RXQ_EN, 0); ++ emac_reg_update32(adpt->base + EMAC_TXQ_CTRL_0, TXQ_EN, 0); ++ emac_reg_update32(adpt->base + EMAC_MAC_CTRL, TXEN | RXEN, 0); ++ usleep_range(1000, 1050); /* stopping mac may take upto 1msec */ ++} ++ ++/* Free all descriptors of given transmit queue */ ++static void emac_tx_q_descs_free(struct emac_adapter *adpt) ++{ ++ struct emac_tx_queue *tx_q = &adpt->tx_q; ++ unsigned int i; ++ size_t size; ++ ++ /* ring already cleared, nothing to do */ ++ if (!tx_q->tpd.tpbuff) ++ return; ++ ++ for (i = 0; i < tx_q->tpd.count; i++) { ++ struct emac_buffer *tpbuf = GET_TPD_BUFFER(tx_q, i); ++ ++ if (tpbuf->dma_addr) { ++ dma_unmap_single(adpt->netdev->dev.parent, ++ tpbuf->dma_addr, tpbuf->length, ++ DMA_TO_DEVICE); ++ tpbuf->dma_addr = 0; ++ } ++ if (tpbuf->skb) { ++ dev_kfree_skb_any(tpbuf->skb); ++ tpbuf->skb = NULL; ++ } ++ } ++ ++ size = sizeof(struct emac_buffer) * tx_q->tpd.count; ++ memset(tx_q->tpd.tpbuff, 0, size); ++ ++ /* clear the descriptor ring */ ++ memset(tx_q->tpd.v_addr, 0, tx_q->tpd.size); ++ ++ tx_q->tpd.consume_idx = 0; ++ tx_q->tpd.produce_idx = 0; ++} ++ ++/* Free all descriptors of given receive queue */ ++static void emac_rx_q_free_descs(struct emac_adapter *adpt) ++{ ++ struct device *dev = adpt->netdev->dev.parent; ++ struct emac_rx_queue *rx_q = &adpt->rx_q; ++ unsigned int i; ++ size_t size; ++ ++ /* ring already cleared, nothing to do */ ++ if (!rx_q->rfd.rfbuff) ++ return; ++ ++ for (i = 0; i < rx_q->rfd.count; i++) { ++ struct emac_buffer *rfbuf = GET_RFD_BUFFER(rx_q, i); ++ ++ if (rfbuf->dma_addr) { ++ dma_unmap_single(dev, rfbuf->dma_addr, rfbuf->length, ++ DMA_FROM_DEVICE); ++ rfbuf->dma_addr = 0; ++ } ++ if (rfbuf->skb) { ++ dev_kfree_skb(rfbuf->skb); ++ rfbuf->skb = NULL; ++ } ++ } ++ ++ size = sizeof(struct emac_buffer) * rx_q->rfd.count; ++ memset(rx_q->rfd.rfbuff, 0, size); ++ ++ /* clear the descriptor rings */ ++ memset(rx_q->rrd.v_addr, 0, rx_q->rrd.size); ++ rx_q->rrd.produce_idx = 0; ++ rx_q->rrd.consume_idx = 0; ++ ++ memset(rx_q->rfd.v_addr, 0, rx_q->rfd.size); ++ rx_q->rfd.produce_idx = 0; ++ rx_q->rfd.consume_idx = 0; ++} ++ ++/* Free all buffers associated with given transmit queue */ ++static void emac_tx_q_bufs_free(struct emac_adapter *adpt) ++{ ++ struct emac_tx_queue *tx_q = &adpt->tx_q; ++ ++ emac_tx_q_descs_free(adpt); ++ ++ kfree(tx_q->tpd.tpbuff); ++ tx_q->tpd.tpbuff = NULL; ++ tx_q->tpd.v_addr = NULL; ++ tx_q->tpd.dma_addr = 0; ++ tx_q->tpd.size = 0; ++} ++ ++/* Allocate TX descriptor ring for the given transmit queue */ ++static int emac_tx_q_desc_alloc(struct emac_adapter *adpt, ++ struct emac_tx_queue *tx_q) ++{ ++ struct emac_ring_header *ring_header = &adpt->ring_header; ++ size_t size; ++ ++ size = sizeof(struct emac_buffer) * tx_q->tpd.count; ++ tx_q->tpd.tpbuff = kzalloc(size, GFP_KERNEL); ++ if (!tx_q->tpd.tpbuff) ++ return -ENOMEM; ++ ++ tx_q->tpd.size = tx_q->tpd.count * (adpt->tpd_size * 4); ++ tx_q->tpd.dma_addr = ring_header->dma_addr + ring_header->used; ++ tx_q->tpd.v_addr = ring_header->v_addr + ring_header->used; ++ ring_header->used += ALIGN(tx_q->tpd.size, 8); ++ tx_q->tpd.produce_idx = 0; ++ tx_q->tpd.consume_idx = 0; ++ ++ return 0; ++} ++ ++/* Free all buffers associated with given transmit queue */ ++static void emac_rx_q_bufs_free(struct emac_adapter *adpt) ++{ ++ struct emac_rx_queue *rx_q = &adpt->rx_q; ++ ++ emac_rx_q_free_descs(adpt); ++ ++ kfree(rx_q->rfd.rfbuff); ++ rx_q->rfd.rfbuff = NULL; ++ ++ rx_q->rfd.v_addr = NULL; ++ rx_q->rfd.dma_addr = 0; ++ rx_q->rfd.size = 0; ++ ++ rx_q->rrd.v_addr = NULL; ++ rx_q->rrd.dma_addr = 0; ++ rx_q->rrd.size = 0; ++} ++ ++/* Allocate RX descriptor rings for the given receive queue */ ++static int emac_rx_descs_alloc(struct emac_adapter *adpt) ++{ ++ struct emac_ring_header *ring_header = &adpt->ring_header; ++ struct emac_rx_queue *rx_q = &adpt->rx_q; ++ size_t size; ++ ++ size = sizeof(struct emac_buffer) * rx_q->rfd.count; ++ rx_q->rfd.rfbuff = kzalloc(size, GFP_KERNEL); ++ if (!rx_q->rfd.rfbuff) ++ return -ENOMEM; ++ ++ rx_q->rrd.size = rx_q->rrd.count * (adpt->rrd_size * 4); ++ rx_q->rfd.size = rx_q->rfd.count * (adpt->rfd_size * 4); ++ ++ rx_q->rrd.dma_addr = ring_header->dma_addr + ring_header->used; ++ rx_q->rrd.v_addr = ring_header->v_addr + ring_header->used; ++ ring_header->used += ALIGN(rx_q->rrd.size, 8); ++ ++ rx_q->rfd.dma_addr = ring_header->dma_addr + ring_header->used; ++ rx_q->rfd.v_addr = ring_header->v_addr + ring_header->used; ++ ring_header->used += ALIGN(rx_q->rfd.size, 8); ++ ++ rx_q->rrd.produce_idx = 0; ++ rx_q->rrd.consume_idx = 0; ++ ++ rx_q->rfd.produce_idx = 0; ++ rx_q->rfd.consume_idx = 0; ++ ++ return 0; ++} ++ ++/* Allocate all TX and RX descriptor rings */ ++int emac_mac_rx_tx_rings_alloc_all(struct emac_adapter *adpt) ++{ ++ struct emac_ring_header *ring_header = &adpt->ring_header; ++ struct device *dev = adpt->netdev->dev.parent; ++ unsigned int num_tx_descs = adpt->tx_desc_cnt; ++ unsigned int num_rx_descs = adpt->rx_desc_cnt; ++ int ret; ++ ++ adpt->tx_q.tpd.count = adpt->tx_desc_cnt; ++ ++ adpt->rx_q.rrd.count = adpt->rx_desc_cnt; ++ adpt->rx_q.rfd.count = adpt->rx_desc_cnt; ++ ++ /* Ring DMA buffer. Each ring may need up to 8 bytes for alignment, ++ * hence the additional padding bytes are allocated. ++ */ ++ ring_header->size = num_tx_descs * (adpt->tpd_size * 4) + ++ num_rx_descs * (adpt->rfd_size * 4) + ++ num_rx_descs * (adpt->rrd_size * 4) + ++ 8 + 2 * 8; /* 8 byte per one Tx and two Rx rings */ ++ ++ ring_header->used = 0; ++ ring_header->v_addr = dma_zalloc_coherent(dev, ring_header->size, ++ &ring_header->dma_addr, ++ GFP_KERNEL); ++ if (!ring_header->v_addr) ++ return -ENOMEM; ++ ++ ring_header->used = ALIGN(ring_header->dma_addr, 8) - ++ ring_header->dma_addr; ++ ++ ret = emac_tx_q_desc_alloc(adpt, &adpt->tx_q); ++ if (ret) { ++ netdev_err(adpt->netdev, "error: Tx Queue alloc failed\n"); ++ goto err_alloc_tx; ++ } ++ ++ ret = emac_rx_descs_alloc(adpt); ++ if (ret) { ++ netdev_err(adpt->netdev, "error: Rx Queue alloc failed\n"); ++ goto err_alloc_rx; ++ } ++ ++ return 0; ++ ++err_alloc_rx: ++ emac_tx_q_bufs_free(adpt); ++err_alloc_tx: ++ dma_free_coherent(dev, ring_header->size, ++ ring_header->v_addr, ring_header->dma_addr); ++ ++ ring_header->v_addr = NULL; ++ ring_header->dma_addr = 0; ++ ring_header->size = 0; ++ ring_header->used = 0; ++ ++ return ret; ++} ++ ++/* Free all TX and RX descriptor rings */ ++void emac_mac_rx_tx_rings_free_all(struct emac_adapter *adpt) ++{ ++ struct emac_ring_header *ring_header = &adpt->ring_header; ++ struct device *dev = adpt->netdev->dev.parent; ++ ++ emac_tx_q_bufs_free(adpt); ++ emac_rx_q_bufs_free(adpt); ++ ++ dma_free_coherent(dev, ring_header->size, ++ ring_header->v_addr, ring_header->dma_addr); ++ ++ ring_header->v_addr = NULL; ++ ring_header->dma_addr = 0; ++ ring_header->size = 0; ++ ring_header->used = 0; ++} ++ ++/* Initialize descriptor rings */ ++static void emac_mac_rx_tx_ring_reset_all(struct emac_adapter *adpt) ++{ ++ unsigned int i; ++ ++ adpt->tx_q.tpd.produce_idx = 0; ++ adpt->tx_q.tpd.consume_idx = 0; ++ for (i = 0; i < adpt->tx_q.tpd.count; i++) ++ adpt->tx_q.tpd.tpbuff[i].dma_addr = 0; ++ ++ adpt->rx_q.rrd.produce_idx = 0; ++ adpt->rx_q.rrd.consume_idx = 0; ++ adpt->rx_q.rfd.produce_idx = 0; ++ adpt->rx_q.rfd.consume_idx = 0; ++ for (i = 0; i < adpt->rx_q.rfd.count; i++) ++ adpt->rx_q.rfd.rfbuff[i].dma_addr = 0; ++} ++ ++/* Produce new receive free descriptor */ ++static void emac_mac_rx_rfd_create(struct emac_adapter *adpt, ++ struct emac_rx_queue *rx_q, ++ dma_addr_t addr) ++{ ++ u32 *hw_rfd = EMAC_RFD(rx_q, adpt->rfd_size, rx_q->rfd.produce_idx); ++ ++ *(hw_rfd++) = lower_32_bits(addr); ++ *hw_rfd = upper_32_bits(addr); ++ ++ if (++rx_q->rfd.produce_idx == rx_q->rfd.count) ++ rx_q->rfd.produce_idx = 0; ++} ++ ++/* Fill up receive queue's RFD with preallocated receive buffers */ ++static void emac_mac_rx_descs_refill(struct emac_adapter *adpt, ++ struct emac_rx_queue *rx_q) ++{ ++ struct emac_buffer *curr_rxbuf; ++ struct emac_buffer *next_rxbuf; ++ unsigned int count = 0; ++ u32 next_produce_idx; ++ ++ next_produce_idx = rx_q->rfd.produce_idx + 1; ++ if (next_produce_idx == rx_q->rfd.count) ++ next_produce_idx = 0; ++ ++ curr_rxbuf = GET_RFD_BUFFER(rx_q, rx_q->rfd.produce_idx); ++ next_rxbuf = GET_RFD_BUFFER(rx_q, next_produce_idx); ++ ++ /* this always has a blank rx_buffer*/ ++ while (!next_rxbuf->dma_addr) { ++ struct sk_buff *skb; ++ int ret; ++ ++ skb = netdev_alloc_skb_ip_align(adpt->netdev, adpt->rxbuf_size); ++ if (!skb) ++ break; ++ ++ curr_rxbuf->dma_addr = ++ dma_map_single(adpt->netdev->dev.parent, skb->data, ++ curr_rxbuf->length, DMA_FROM_DEVICE); ++ ret = dma_mapping_error(adpt->netdev->dev.parent, ++ curr_rxbuf->dma_addr); ++ if (ret) { ++ dev_kfree_skb(skb); ++ break; ++ } ++ curr_rxbuf->skb = skb; ++ curr_rxbuf->length = adpt->rxbuf_size; ++ ++ emac_mac_rx_rfd_create(adpt, rx_q, curr_rxbuf->dma_addr); ++ next_produce_idx = rx_q->rfd.produce_idx + 1; ++ if (next_produce_idx == rx_q->rfd.count) ++ next_produce_idx = 0; ++ ++ curr_rxbuf = GET_RFD_BUFFER(rx_q, rx_q->rfd.produce_idx); ++ next_rxbuf = GET_RFD_BUFFER(rx_q, next_produce_idx); ++ count++; ++ } ++ ++ if (count) { ++ u32 prod_idx = (rx_q->rfd.produce_idx << rx_q->produce_shift) & ++ rx_q->produce_mask; ++ emac_reg_update32(adpt->base + rx_q->produce_reg, ++ rx_q->produce_mask, prod_idx); ++ } ++} ++ ++static void emac_adjust_link(struct net_device *netdev) ++{ ++ struct emac_adapter *adpt = netdev_priv(netdev); ++ struct phy_device *phydev = netdev->phydev; ++ ++ if (phydev->link) ++ emac_mac_start(adpt); ++ else ++ emac_mac_stop(adpt); ++ ++ phy_print_status(phydev); ++} ++ ++/* Bringup the interface/HW */ ++int emac_mac_up(struct emac_adapter *adpt) ++{ ++ struct net_device *netdev = adpt->netdev; ++ struct emac_irq *irq = &adpt->irq; ++ int ret; ++ ++ emac_mac_rx_tx_ring_reset_all(adpt); ++ emac_mac_config(adpt); ++ ++ ret = request_irq(irq->irq, emac_isr, 0, EMAC_MAC_IRQ_RES, irq); ++ if (ret) { ++ netdev_err(adpt->netdev, "could not request %s irq\n", ++ EMAC_MAC_IRQ_RES); ++ return ret; ++ } ++ ++ emac_mac_rx_descs_refill(adpt, &adpt->rx_q); ++ ++ ret = phy_connect_direct(netdev, adpt->phydev, emac_adjust_link, ++ PHY_INTERFACE_MODE_SGMII); ++ if (ret) { ++ netdev_err(adpt->netdev, "could not connect phy\n"); ++ free_irq(irq->irq, irq); ++ return ret; ++ } ++ ++ /* enable mac irq */ ++ writel((u32)~DIS_INT, adpt->base + EMAC_INT_STATUS); ++ writel(adpt->irq.mask, adpt->base + EMAC_INT_MASK); ++ ++ adpt->phydev->irq = PHY_IGNORE_INTERRUPT; ++ phy_start(adpt->phydev); ++ ++ napi_enable(&adpt->rx_q.napi); ++ netif_start_queue(netdev); ++ ++ return 0; ++} ++ ++/* Bring down the interface/HW */ ++void emac_mac_down(struct emac_adapter *adpt) ++{ ++ struct net_device *netdev = adpt->netdev; ++ ++ netif_stop_queue(netdev); ++ napi_disable(&adpt->rx_q.napi); ++ ++ phy_stop(adpt->phydev); ++ phy_disconnect(adpt->phydev); ++ ++ /* disable mac irq */ ++ writel(DIS_INT, adpt->base + EMAC_INT_STATUS); ++ writel(0, adpt->base + EMAC_INT_MASK); ++ synchronize_irq(adpt->irq.irq); ++ free_irq(adpt->irq.irq, &adpt->irq); ++ ++ emac_mac_reset(adpt); ++ ++ emac_tx_q_descs_free(adpt); ++ netdev_reset_queue(adpt->netdev); ++ emac_rx_q_free_descs(adpt); ++} ++ ++/* Consume next received packet descriptor */ ++static bool emac_rx_process_rrd(struct emac_adapter *adpt, ++ struct emac_rx_queue *rx_q, ++ struct emac_rrd *rrd) ++{ ++ u32 *hw_rrd = EMAC_RRD(rx_q, adpt->rrd_size, rx_q->rrd.consume_idx); ++ ++ rrd->word[3] = *(hw_rrd + 3); ++ ++ if (!RRD_UPDT(rrd)) ++ return false; ++ ++ rrd->word[4] = 0; ++ rrd->word[5] = 0; ++ ++ rrd->word[0] = *(hw_rrd++); ++ rrd->word[1] = *(hw_rrd++); ++ rrd->word[2] = *(hw_rrd++); ++ ++ if (unlikely(RRD_NOR(rrd) != 1)) { ++ netdev_err(adpt->netdev, ++ "error: multi-RFD not support yet! nor:%lu\n", ++ RRD_NOR(rrd)); ++ } ++ ++ /* mark rrd as processed */ ++ RRD_UPDT_SET(rrd, 0); ++ *hw_rrd = rrd->word[3]; ++ ++ if (++rx_q->rrd.consume_idx == rx_q->rrd.count) ++ rx_q->rrd.consume_idx = 0; ++ ++ return true; ++} ++ ++/* Produce new transmit descriptor */ ++static void emac_tx_tpd_create(struct emac_adapter *adpt, ++ struct emac_tx_queue *tx_q, struct emac_tpd *tpd) ++{ ++ u32 *hw_tpd; ++ ++ tx_q->tpd.last_produce_idx = tx_q->tpd.produce_idx; ++ hw_tpd = EMAC_TPD(tx_q, adpt->tpd_size, tx_q->tpd.produce_idx); ++ ++ if (++tx_q->tpd.produce_idx == tx_q->tpd.count) ++ tx_q->tpd.produce_idx = 0; ++ ++ *(hw_tpd++) = tpd->word[0]; ++ *(hw_tpd++) = tpd->word[1]; ++ *(hw_tpd++) = tpd->word[2]; ++ *hw_tpd = tpd->word[3]; ++} ++ ++/* Mark the last transmit descriptor as such (for the transmit packet) */ ++static void emac_tx_tpd_mark_last(struct emac_adapter *adpt, ++ struct emac_tx_queue *tx_q) ++{ ++ u32 *hw_tpd = ++ EMAC_TPD(tx_q, adpt->tpd_size, tx_q->tpd.last_produce_idx); ++ u32 tmp_tpd; ++ ++ tmp_tpd = *(hw_tpd + 1); ++ tmp_tpd |= EMAC_TPD_LAST_FRAGMENT; ++ *(hw_tpd + 1) = tmp_tpd; ++} ++ ++static void emac_rx_rfd_clean(struct emac_rx_queue *rx_q, struct emac_rrd *rrd) ++{ ++ struct emac_buffer *rfbuf = rx_q->rfd.rfbuff; ++ u32 consume_idx = RRD_SI(rrd); ++ unsigned int i; ++ ++ for (i = 0; i < RRD_NOR(rrd); i++) { ++ rfbuf[consume_idx].skb = NULL; ++ if (++consume_idx == rx_q->rfd.count) ++ consume_idx = 0; ++ } ++ ++ rx_q->rfd.consume_idx = consume_idx; ++ rx_q->rfd.process_idx = consume_idx; ++} ++ ++/* Push the received skb to upper layers */ ++static void emac_receive_skb(struct emac_rx_queue *rx_q, ++ struct sk_buff *skb, ++ u16 vlan_tag, bool vlan_flag) ++{ ++ if (vlan_flag) { ++ u16 vlan; ++ ++ EMAC_TAG_TO_VLAN(vlan_tag, vlan); ++ __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan); ++ } ++ ++ napi_gro_receive(&rx_q->napi, skb); ++} ++ ++/* Process receive event */ ++void emac_mac_rx_process(struct emac_adapter *adpt, struct emac_rx_queue *rx_q, ++ int *num_pkts, int max_pkts) ++{ ++ u32 proc_idx, hw_consume_idx, num_consume_pkts; ++ struct net_device *netdev = adpt->netdev; ++ struct emac_buffer *rfbuf; ++ unsigned int count = 0; ++ struct emac_rrd rrd; ++ struct sk_buff *skb; ++ u32 reg; ++ ++ reg = readl_relaxed(adpt->base + rx_q->consume_reg); ++ ++ hw_consume_idx = (reg & rx_q->consume_mask) >> rx_q->consume_shift; ++ num_consume_pkts = (hw_consume_idx >= rx_q->rrd.consume_idx) ? ++ (hw_consume_idx - rx_q->rrd.consume_idx) : ++ (hw_consume_idx + rx_q->rrd.count - rx_q->rrd.consume_idx); ++ ++ do { ++ if (!num_consume_pkts) ++ break; ++ ++ if (!emac_rx_process_rrd(adpt, rx_q, &rrd)) ++ break; ++ ++ if (likely(RRD_NOR(&rrd) == 1)) { ++ /* good receive */ ++ rfbuf = GET_RFD_BUFFER(rx_q, RRD_SI(&rrd)); ++ dma_unmap_single(adpt->netdev->dev.parent, ++ rfbuf->dma_addr, rfbuf->length, ++ DMA_FROM_DEVICE); ++ rfbuf->dma_addr = 0; ++ skb = rfbuf->skb; ++ } else { ++ netdev_err(adpt->netdev, ++ "error: multi-RFD not support yet!\n"); ++ break; ++ } ++ emac_rx_rfd_clean(rx_q, &rrd); ++ num_consume_pkts--; ++ count++; ++ ++ /* Due to a HW issue in L4 check sum detection (UDP/TCP frags ++ * with DF set are marked as error), drop packets based on the ++ * error mask rather than the summary bit (ignoring L4F errors) ++ */ ++ if (rrd.word[EMAC_RRD_STATS_DW_IDX] & EMAC_RRD_ERROR) { ++ netif_dbg(adpt, rx_status, adpt->netdev, ++ "Drop error packet[RRD: 0x%x:0x%x:0x%x:0x%x]\n", ++ rrd.word[0], rrd.word[1], ++ rrd.word[2], rrd.word[3]); ++ ++ dev_kfree_skb(skb); ++ continue; ++ } ++ ++ skb_put(skb, RRD_PKT_SIZE(&rrd) - ETH_FCS_LEN); ++ skb->dev = netdev; ++ skb->protocol = eth_type_trans(skb, skb->dev); ++ if (netdev->features & NETIF_F_RXCSUM) ++ skb->ip_summed = RRD_L4F(&rrd) ? ++ CHECKSUM_NONE : CHECKSUM_UNNECESSARY; ++ else ++ skb_checksum_none_assert(skb); ++ ++ emac_receive_skb(rx_q, skb, (u16)RRD_CVALN_TAG(&rrd), ++ (bool)RRD_CVTAG(&rrd)); ++ ++ netdev->last_rx = jiffies; ++ (*num_pkts)++; ++ } while (*num_pkts < max_pkts); ++ ++ if (count) { ++ proc_idx = (rx_q->rfd.process_idx << rx_q->process_shft) & ++ rx_q->process_mask; ++ emac_reg_update32(adpt->base + rx_q->process_reg, ++ rx_q->process_mask, proc_idx); ++ emac_mac_rx_descs_refill(adpt, rx_q); ++ } ++} ++ ++/* get the number of free transmit descriptors */ ++static unsigned int emac_tpd_num_free_descs(struct emac_tx_queue *tx_q) ++{ ++ u32 produce_idx = tx_q->tpd.produce_idx; ++ u32 consume_idx = tx_q->tpd.consume_idx; ++ ++ return (consume_idx > produce_idx) ? ++ (consume_idx - produce_idx - 1) : ++ (tx_q->tpd.count + consume_idx - produce_idx - 1); ++} ++ ++/* Process transmit event */ ++void emac_mac_tx_process(struct emac_adapter *adpt, struct emac_tx_queue *tx_q) ++{ ++ u32 reg = readl_relaxed(adpt->base + tx_q->consume_reg); ++ u32 hw_consume_idx, pkts_compl = 0, bytes_compl = 0; ++ struct emac_buffer *tpbuf; ++ ++ hw_consume_idx = (reg & tx_q->consume_mask) >> tx_q->consume_shift; ++ ++ while (tx_q->tpd.consume_idx != hw_consume_idx) { ++ tpbuf = GET_TPD_BUFFER(tx_q, tx_q->tpd.consume_idx); ++ if (tpbuf->dma_addr) { ++ dma_unmap_single(adpt->netdev->dev.parent, ++ tpbuf->dma_addr, tpbuf->length, ++ DMA_TO_DEVICE); ++ tpbuf->dma_addr = 0; ++ } ++ ++ if (tpbuf->skb) { ++ pkts_compl++; ++ bytes_compl += tpbuf->skb->len; ++ dev_kfree_skb_irq(tpbuf->skb); ++ tpbuf->skb = NULL; ++ } ++ ++ if (++tx_q->tpd.consume_idx == tx_q->tpd.count) ++ tx_q->tpd.consume_idx = 0; ++ } ++ ++ netdev_completed_queue(adpt->netdev, pkts_compl, bytes_compl); ++ ++ if (netif_queue_stopped(adpt->netdev)) ++ if (emac_tpd_num_free_descs(tx_q) > (MAX_SKB_FRAGS + 1)) ++ netif_wake_queue(adpt->netdev); ++} ++ ++/* Initialize all queue data structures */ ++void emac_mac_rx_tx_ring_init_all(struct platform_device *pdev, ++ struct emac_adapter *adpt) ++{ ++ adpt->rx_q.netdev = adpt->netdev; ++ ++ adpt->rx_q.produce_reg = EMAC_MAILBOX_0; ++ adpt->rx_q.produce_mask = RFD0_PROD_IDX_BMSK; ++ adpt->rx_q.produce_shift = RFD0_PROD_IDX_SHFT; ++ ++ adpt->rx_q.process_reg = EMAC_MAILBOX_0; ++ adpt->rx_q.process_mask = RFD0_PROC_IDX_BMSK; ++ adpt->rx_q.process_shft = RFD0_PROC_IDX_SHFT; ++ ++ adpt->rx_q.consume_reg = EMAC_MAILBOX_3; ++ adpt->rx_q.consume_mask = RFD0_CONS_IDX_BMSK; ++ adpt->rx_q.consume_shift = RFD0_CONS_IDX_SHFT; ++ ++ adpt->rx_q.irq = &adpt->irq; ++ adpt->rx_q.intr = adpt->irq.mask & ISR_RX_PKT; ++ ++ adpt->tx_q.produce_reg = EMAC_MAILBOX_15; ++ adpt->tx_q.produce_mask = NTPD_PROD_IDX_BMSK; ++ adpt->tx_q.produce_shift = NTPD_PROD_IDX_SHFT; ++ ++ adpt->tx_q.consume_reg = EMAC_MAILBOX_2; ++ adpt->tx_q.consume_mask = NTPD_CONS_IDX_BMSK; ++ adpt->tx_q.consume_shift = NTPD_CONS_IDX_SHFT; ++} ++ ++/* Fill up transmit descriptors with TSO and Checksum offload information */ ++static int emac_tso_csum(struct emac_adapter *adpt, ++ struct emac_tx_queue *tx_q, ++ struct sk_buff *skb, ++ struct emac_tpd *tpd) ++{ ++ unsigned int hdr_len; ++ int ret; ++ ++ if (skb_is_gso(skb)) { ++ if (skb_header_cloned(skb)) { ++ ret = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); ++ if (unlikely(ret)) ++ return ret; ++ } ++ ++ if (skb->protocol == htons(ETH_P_IP)) { ++ u32 pkt_len = ((unsigned char *)ip_hdr(skb) - skb->data) ++ + ntohs(ip_hdr(skb)->tot_len); ++ if (skb->len > pkt_len) ++ pskb_trim(skb, pkt_len); ++ } ++ ++ hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); ++ if (unlikely(skb->len == hdr_len)) { ++ /* we only need to do csum */ ++ netif_warn(adpt, tx_err, adpt->netdev, ++ "tso not needed for packet with 0 data\n"); ++ goto do_csum; ++ } ++ ++ if (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV4) { ++ ip_hdr(skb)->check = 0; ++ tcp_hdr(skb)->check = ++ ~csum_tcpudp_magic(ip_hdr(skb)->saddr, ++ ip_hdr(skb)->daddr, ++ 0, IPPROTO_TCP, 0); ++ TPD_IPV4_SET(tpd, 1); ++ } ++ ++ if (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV6) { ++ /* ipv6 tso need an extra tpd */ ++ struct emac_tpd extra_tpd; ++ ++ memset(tpd, 0, sizeof(*tpd)); ++ memset(&extra_tpd, 0, sizeof(extra_tpd)); ++ ++ ipv6_hdr(skb)->payload_len = 0; ++ tcp_hdr(skb)->check = ++ ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, ++ &ipv6_hdr(skb)->daddr, ++ 0, IPPROTO_TCP, 0); ++ TPD_PKT_LEN_SET(&extra_tpd, skb->len); ++ TPD_LSO_SET(&extra_tpd, 1); ++ TPD_LSOV_SET(&extra_tpd, 1); ++ emac_tx_tpd_create(adpt, tx_q, &extra_tpd); ++ TPD_LSOV_SET(tpd, 1); ++ } ++ ++ TPD_LSO_SET(tpd, 1); ++ TPD_TCPHDR_OFFSET_SET(tpd, skb_transport_offset(skb)); ++ TPD_MSS_SET(tpd, skb_shinfo(skb)->gso_size); ++ return 0; ++ } ++ ++do_csum: ++ if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) { ++ unsigned int css, cso; ++ ++ cso = skb_transport_offset(skb); ++ if (unlikely(cso & 0x1)) { ++ netdev_err(adpt->netdev, ++ "error: payload offset should be even\n"); ++ return -EINVAL; ++ } ++ css = cso + skb->csum_offset; ++ ++ TPD_PAYLOAD_OFFSET_SET(tpd, cso >> 1); ++ TPD_CXSUM_OFFSET_SET(tpd, css >> 1); ++ TPD_CSX_SET(tpd, 1); ++ } ++ ++ return 0; ++} ++ ++/* Fill up transmit descriptors */ ++static void emac_tx_fill_tpd(struct emac_adapter *adpt, ++ struct emac_tx_queue *tx_q, struct sk_buff *skb, ++ struct emac_tpd *tpd) ++{ ++ unsigned int nr_frags = skb_shinfo(skb)->nr_frags; ++ unsigned int first = tx_q->tpd.produce_idx; ++ unsigned int len = skb_headlen(skb); ++ struct emac_buffer *tpbuf = NULL; ++ unsigned int mapped_len = 0; ++ unsigned int i; ++ int count = 0; ++ int ret; ++ ++ /* if Large Segment Offload is (in TCP Segmentation Offload struct) */ ++ if (TPD_LSO(tpd)) { ++ mapped_len = skb_transport_offset(skb) + tcp_hdrlen(skb); ++ ++ tpbuf = GET_TPD_BUFFER(tx_q, tx_q->tpd.produce_idx); ++ tpbuf->length = mapped_len; ++ tpbuf->dma_addr = dma_map_single(adpt->netdev->dev.parent, ++ skb->data, tpbuf->length, ++ DMA_TO_DEVICE); ++ ret = dma_mapping_error(adpt->netdev->dev.parent, ++ tpbuf->dma_addr); ++ if (ret) ++ goto error; ++ ++ TPD_BUFFER_ADDR_L_SET(tpd, lower_32_bits(tpbuf->dma_addr)); ++ TPD_BUFFER_ADDR_H_SET(tpd, upper_32_bits(tpbuf->dma_addr)); ++ TPD_BUF_LEN_SET(tpd, tpbuf->length); ++ emac_tx_tpd_create(adpt, tx_q, tpd); ++ count++; ++ } ++ ++ if (mapped_len < len) { ++ tpbuf = GET_TPD_BUFFER(tx_q, tx_q->tpd.produce_idx); ++ tpbuf->length = len - mapped_len; ++ tpbuf->dma_addr = dma_map_single(adpt->netdev->dev.parent, ++ skb->data + mapped_len, ++ tpbuf->length, DMA_TO_DEVICE); ++ ret = dma_mapping_error(adpt->netdev->dev.parent, ++ tpbuf->dma_addr); ++ if (ret) ++ goto error; ++ ++ TPD_BUFFER_ADDR_L_SET(tpd, lower_32_bits(tpbuf->dma_addr)); ++ TPD_BUFFER_ADDR_H_SET(tpd, upper_32_bits(tpbuf->dma_addr)); ++ TPD_BUF_LEN_SET(tpd, tpbuf->length); ++ emac_tx_tpd_create(adpt, tx_q, tpd); ++ count++; ++ } ++ ++ for (i = 0; i < nr_frags; i++) { ++ struct skb_frag_struct *frag; ++ ++ frag = &skb_shinfo(skb)->frags[i]; ++ ++ tpbuf = GET_TPD_BUFFER(tx_q, tx_q->tpd.produce_idx); ++ tpbuf->length = frag->size; ++ tpbuf->dma_addr = dma_map_page(adpt->netdev->dev.parent, ++ frag->page.p, frag->page_offset, ++ tpbuf->length, DMA_TO_DEVICE); ++ ret = dma_mapping_error(adpt->netdev->dev.parent, ++ tpbuf->dma_addr); ++ if (ret) ++ goto error; ++ ++ TPD_BUFFER_ADDR_L_SET(tpd, lower_32_bits(tpbuf->dma_addr)); ++ TPD_BUFFER_ADDR_H_SET(tpd, upper_32_bits(tpbuf->dma_addr)); ++ TPD_BUF_LEN_SET(tpd, tpbuf->length); ++ emac_tx_tpd_create(adpt, tx_q, tpd); ++ count++; ++ } ++ ++ /* The last tpd */ ++ wmb(); ++ emac_tx_tpd_mark_last(adpt, tx_q); ++ ++ /* The last buffer info contain the skb address, ++ * so it will be freed after unmap ++ */ ++ tpbuf->skb = skb; ++ ++ return; ++ ++error: ++ /* One of the memory mappings failed, so undo everything */ ++ tx_q->tpd.produce_idx = first; ++ ++ while (count--) { ++ tpbuf = GET_TPD_BUFFER(tx_q, first); ++ dma_unmap_page(adpt->netdev->dev.parent, tpbuf->dma_addr, ++ tpbuf->length, DMA_TO_DEVICE); ++ tpbuf->dma_addr = 0; ++ tpbuf->length = 0; ++ ++ if (++first == tx_q->tpd.count) ++ first = 0; ++ } ++ ++ dev_kfree_skb(skb); ++} ++ ++/* Transmit the packet using specified transmit queue */ ++int emac_mac_tx_buf_send(struct emac_adapter *adpt, struct emac_tx_queue *tx_q, ++ struct sk_buff *skb) ++{ ++ struct emac_tpd tpd; ++ u32 prod_idx; ++ ++ memset(&tpd, 0, sizeof(tpd)); ++ ++ if (emac_tso_csum(adpt, tx_q, skb, &tpd) != 0) { ++ dev_kfree_skb_any(skb); ++ return NETDEV_TX_OK; ++ } ++ ++ if (skb_vlan_tag_present(skb)) { ++ u16 tag; ++ ++ EMAC_VLAN_TO_TAG(skb_vlan_tag_get(skb), tag); ++ TPD_CVLAN_TAG_SET(&tpd, tag); ++ TPD_INSTC_SET(&tpd, 1); ++ } ++ ++ if (skb_network_offset(skb) != ETH_HLEN) ++ TPD_TYP_SET(&tpd, 1); ++ ++ emac_tx_fill_tpd(adpt, tx_q, skb, &tpd); ++ ++ netdev_sent_queue(adpt->netdev, skb->len); ++ ++ /* Make sure the are enough free descriptors to hold one ++ * maximum-sized SKB. We need one desc for each fragment, ++ * one for the checksum (emac_tso_csum), one for TSO, and ++ * and one for the SKB header. ++ */ ++ if (emac_tpd_num_free_descs(tx_q) < (MAX_SKB_FRAGS + 3)) ++ netif_stop_queue(adpt->netdev); ++ ++ /* update produce idx */ ++ prod_idx = (tx_q->tpd.produce_idx << tx_q->produce_shift) & ++ tx_q->produce_mask; ++ emac_reg_update32(adpt->base + tx_q->produce_reg, ++ tx_q->produce_mask, prod_idx); ++ ++ return NETDEV_TX_OK; ++} +diff --git a/drivers/net/ethernet/qualcomm/emac/emac-mac.h b/drivers/net/ethernet/qualcomm/emac/emac-mac.h +new file mode 100644 +index 0000000..f3aa24d +--- /dev/null ++++ b/drivers/net/ethernet/qualcomm/emac/emac-mac.h +@@ -0,0 +1,248 @@ ++/* Copyright (c) 2013-2016, The Linux Foundation. All rights reserved. ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 and ++ * only version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++/* EMAC DMA HW engine uses three rings: ++ * Tx: ++ * TPD: Transmit Packet Descriptor ring. ++ * Rx: ++ * RFD: Receive Free Descriptor ring. ++ * Ring of descriptors with empty buffers to be filled by Rx HW. ++ * RRD: Receive Return Descriptor ring. ++ * Ring of descriptors with buffers filled with received data. ++ */ ++ ++#ifndef _EMAC_HW_H_ ++#define _EMAC_HW_H_ ++ ++/* EMAC_CSR register offsets */ ++#define EMAC_EMAC_WRAPPER_CSR1 0x000000 ++#define EMAC_EMAC_WRAPPER_CSR2 0x000004 ++#define EMAC_EMAC_WRAPPER_TX_TS_LO 0x000104 ++#define EMAC_EMAC_WRAPPER_TX_TS_HI 0x000108 ++#define EMAC_EMAC_WRAPPER_TX_TS_INX 0x00010c ++ ++/* DMA Order Settings */ ++enum emac_dma_order { ++ emac_dma_ord_in = 1, ++ emac_dma_ord_enh = 2, ++ emac_dma_ord_out = 4 ++}; ++ ++enum emac_dma_req_block { ++ emac_dma_req_128 = 0, ++ emac_dma_req_256 = 1, ++ emac_dma_req_512 = 2, ++ emac_dma_req_1024 = 3, ++ emac_dma_req_2048 = 4, ++ emac_dma_req_4096 = 5 ++}; ++ ++/* Returns the value of bits idx...idx+n_bits */ ++#define BITS_GET(val, lo, hi) ((le32_to_cpu(val) & GENMASK((hi), (lo))) >> lo) ++#define BITS_SET(val, lo, hi, new_val) \ ++ val = cpu_to_le32((le32_to_cpu(val) & (~GENMASK((hi), (lo)))) | \ ++ (((new_val) << (lo)) & GENMASK((hi), (lo)))) ++ ++/* RRD (Receive Return Descriptor) */ ++struct emac_rrd { ++ u32 word[6]; ++ ++/* number of RFD */ ++#define RRD_NOR(rrd) BITS_GET((rrd)->word[0], 16, 19) ++/* start consumer index of rfd-ring */ ++#define RRD_SI(rrd) BITS_GET((rrd)->word[0], 20, 31) ++/* vlan-tag (CVID, CFI and PRI) */ ++#define RRD_CVALN_TAG(rrd) BITS_GET((rrd)->word[2], 0, 15) ++/* length of the packet */ ++#define RRD_PKT_SIZE(rrd) BITS_GET((rrd)->word[3], 0, 13) ++/* L4(TCP/UDP) checksum failed */ ++#define RRD_L4F(rrd) BITS_GET((rrd)->word[3], 14, 14) ++/* vlan tagged */ ++#define RRD_CVTAG(rrd) BITS_GET((rrd)->word[3], 16, 16) ++/* When set, indicates that the descriptor is updated by the IP core. ++ * When cleared, indicates that the descriptor is invalid. ++ */ ++#define RRD_UPDT(rrd) BITS_GET((rrd)->word[3], 31, 31) ++#define RRD_UPDT_SET(rrd, val) BITS_SET((rrd)->word[3], 31, 31, val) ++/* timestamp low */ ++#define RRD_TS_LOW(rrd) BITS_GET((rrd)->word[4], 0, 29) ++/* timestamp high */ ++#define RRD_TS_HI(rrd) le32_to_cpu((rrd)->word[5]) ++}; ++ ++/* TPD (Transmit Packet Descriptor) */ ++struct emac_tpd { ++ u32 word[4]; ++ ++/* Number of bytes of the transmit packet. (include 4-byte CRC) */ ++#define TPD_BUF_LEN_SET(tpd, val) BITS_SET((tpd)->word[0], 0, 15, val) ++/* Custom Checksum Offload: When set, ask IP core to offload custom checksum */ ++#define TPD_CSX_SET(tpd, val) BITS_SET((tpd)->word[1], 8, 8, val) ++/* TCP Large Send Offload: When set, ask IP core to do offload TCP Large Send */ ++#define TPD_LSO(tpd) BITS_GET((tpd)->word[1], 12, 12) ++#define TPD_LSO_SET(tpd, val) BITS_SET((tpd)->word[1], 12, 12, val) ++/* Large Send Offload Version: When set, indicates this is an LSOv2 ++ * (for both IPv4 and IPv6). When cleared, indicates this is an LSOv1 ++ * (only for IPv4). ++ */ ++#define TPD_LSOV_SET(tpd, val) BITS_SET((tpd)->word[1], 13, 13, val) ++/* IPv4 packet: When set, indicates this is an IPv4 packet, this bit is only ++ * for LSOV2 format. ++ */ ++#define TPD_IPV4_SET(tpd, val) BITS_SET((tpd)->word[1], 16, 16, val) ++/* 0: Ethernet frame (DA+SA+TYPE+DATA+CRC) ++ * 1: IEEE 802.3 frame (DA+SA+LEN+DSAP+SSAP+CTL+ORG+TYPE+DATA+CRC) ++ */ ++#define TPD_TYP_SET(tpd, val) BITS_SET((tpd)->word[1], 17, 17, val) ++/* Low-32bit Buffer Address */ ++#define TPD_BUFFER_ADDR_L_SET(tpd, val) ((tpd)->word[2] = cpu_to_le32(val)) ++/* CVLAN Tag to be inserted if INS_VLAN_TAG is set, CVLAN TPID based on global ++ * register configuration. ++ */ ++#define TPD_CVLAN_TAG_SET(tpd, val) BITS_SET((tpd)->word[3], 0, 15, val) ++/* Insert CVlan Tag: When set, ask MAC to insert CVLAN TAG to outgoing packet ++ */ ++#define TPD_INSTC_SET(tpd, val) BITS_SET((tpd)->word[3], 17, 17, val) ++/* High-14bit Buffer Address, So, the 64b-bit address is ++ * {DESC_CTRL_11_TX_DATA_HIADDR[17:0],(register) BUFFER_ADDR_H, BUFFER_ADDR_L} ++ */ ++#define TPD_BUFFER_ADDR_H_SET(tpd, val) BITS_SET((tpd)->word[3], 18, 30, val) ++/* Format D. Word offset from the 1st byte of this packet to start to calculate ++ * the custom checksum. ++ */ ++#define TPD_PAYLOAD_OFFSET_SET(tpd, val) BITS_SET((tpd)->word[1], 0, 7, val) ++/* Format D. Word offset from the 1st byte of this packet to fill the custom ++ * checksum to ++ */ ++#define TPD_CXSUM_OFFSET_SET(tpd, val) BITS_SET((tpd)->word[1], 18, 25, val) ++ ++/* Format C. TCP Header offset from the 1st byte of this packet. (byte unit) */ ++#define TPD_TCPHDR_OFFSET_SET(tpd, val) BITS_SET((tpd)->word[1], 0, 7, val) ++/* Format C. MSS (Maximum Segment Size) got from the protocol layer. (byte unit) ++ */ ++#define TPD_MSS_SET(tpd, val) BITS_SET((tpd)->word[1], 18, 30, val) ++/* packet length in ext tpd */ ++#define TPD_PKT_LEN_SET(tpd, val) ((tpd)->word[2] = cpu_to_le32(val)) ++}; ++ ++/* emac_ring_header represents a single, contiguous block of DMA space ++ * mapped for the three descriptor rings (tpd, rfd, rrd) ++ */ ++struct emac_ring_header { ++ void *v_addr; /* virtual address */ ++ dma_addr_t dma_addr; /* dma address */ ++ size_t size; /* length in bytes */ ++ size_t used; ++}; ++ ++/* emac_buffer is wrapper around a pointer to a socket buffer ++ * so a DMA handle can be stored along with the skb ++ */ ++struct emac_buffer { ++ struct sk_buff *skb; /* socket buffer */ ++ u16 length; /* rx buffer length */ ++ dma_addr_t dma_addr; /* dma address */ ++}; ++ ++/* receive free descriptor (rfd) ring */ ++struct emac_rfd_ring { ++ struct emac_buffer *rfbuff; ++ u32 *v_addr; /* virtual address */ ++ dma_addr_t dma_addr; /* dma address */ ++ size_t size; /* length in bytes */ ++ unsigned int count; /* number of desc in the ring */ ++ unsigned int produce_idx; ++ unsigned int process_idx; ++ unsigned int consume_idx; /* unused */ ++}; ++ ++/* Receive Return Desciptor (RRD) ring */ ++struct emac_rrd_ring { ++ u32 *v_addr; /* virtual address */ ++ dma_addr_t dma_addr; /* physical address */ ++ size_t size; /* length in bytes */ ++ unsigned int count; /* number of desc in the ring */ ++ unsigned int produce_idx; /* unused */ ++ unsigned int consume_idx; ++}; ++ ++/* Rx queue */ ++struct emac_rx_queue { ++ struct net_device *netdev; /* netdev ring belongs to */ ++ struct emac_rrd_ring rrd; ++ struct emac_rfd_ring rfd; ++ struct napi_struct napi; ++ struct emac_irq *irq; ++ ++ u32 intr; ++ u32 produce_mask; ++ u32 process_mask; ++ u32 consume_mask; ++ ++ u16 produce_reg; ++ u16 process_reg; ++ u16 consume_reg; ++ ++ u8 produce_shift; ++ u8 process_shft; ++ u8 consume_shift; ++}; ++ ++/* Transimit Packet Descriptor (tpd) ring */ ++struct emac_tpd_ring { ++ struct emac_buffer *tpbuff; ++ u32 *v_addr; /* virtual address */ ++ dma_addr_t dma_addr; /* dma address */ ++ ++ size_t size; /* length in bytes */ ++ unsigned int count; /* number of desc in the ring */ ++ unsigned int produce_idx; ++ unsigned int consume_idx; ++ unsigned int last_produce_idx; ++}; ++ ++/* Tx queue */ ++struct emac_tx_queue { ++ struct emac_tpd_ring tpd; ++ ++ u32 produce_mask; ++ u32 consume_mask; ++ ++ u16 max_packets; /* max packets per interrupt */ ++ u16 produce_reg; ++ u16 consume_reg; ++ ++ u8 produce_shift; ++ u8 consume_shift; ++}; ++ ++struct emac_adapter; ++ ++int emac_mac_up(struct emac_adapter *adpt); ++void emac_mac_down(struct emac_adapter *adpt); ++void emac_mac_reset(struct emac_adapter *adpt); ++void emac_mac_start(struct emac_adapter *adpt); ++void emac_mac_stop(struct emac_adapter *adpt); ++void emac_mac_mode_config(struct emac_adapter *adpt); ++void emac_mac_rx_process(struct emac_adapter *adpt, struct emac_rx_queue *rx_q, ++ int *num_pkts, int max_pkts); ++int emac_mac_tx_buf_send(struct emac_adapter *adpt, struct emac_tx_queue *tx_q, ++ struct sk_buff *skb); ++void emac_mac_tx_process(struct emac_adapter *adpt, struct emac_tx_queue *tx_q); ++void emac_mac_rx_tx_ring_init_all(struct platform_device *pdev, ++ struct emac_adapter *adpt); ++int emac_mac_rx_tx_rings_alloc_all(struct emac_adapter *adpt); ++void emac_mac_rx_tx_rings_free_all(struct emac_adapter *adpt); ++void emac_mac_multicast_addr_clear(struct emac_adapter *adpt); ++void emac_mac_multicast_addr_set(struct emac_adapter *adpt, u8 *addr); ++ ++#endif /*_EMAC_HW_H_*/ +diff --git a/drivers/net/ethernet/qualcomm/emac/emac-phy.c b/drivers/net/ethernet/qualcomm/emac/emac-phy.c +new file mode 100644 +index 0000000..c412ba9 +--- /dev/null ++++ b/drivers/net/ethernet/qualcomm/emac/emac-phy.c +@@ -0,0 +1,204 @@ ++/* Copyright (c) 2013-2016, The Linux Foundation. All rights reserved. ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 and ++ * only version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++/* Qualcomm Technologies, Inc. EMAC PHY Controller driver. ++ */ ++ ++#include <linux/module.h> ++#include <linux/of.h> ++#include <linux/of_net.h> ++#include <linux/of_mdio.h> ++#include <linux/phy.h> ++#include <linux/iopoll.h> ++#include "emac.h" ++#include "emac-mac.h" ++#include "emac-phy.h" ++#include "emac-sgmii.h" ++ ++/* EMAC base register offsets */ ++#define EMAC_MDIO_CTRL 0x001414 ++#define EMAC_PHY_STS 0x001418 ++#define EMAC_MDIO_EX_CTRL 0x001440 ++ ++/* EMAC_MDIO_CTRL */ ++#define MDIO_MODE BIT(30) ++#define MDIO_PR BIT(29) ++#define MDIO_AP_EN BIT(28) ++#define MDIO_BUSY BIT(27) ++#define MDIO_CLK_SEL_BMSK 0x7000000 ++#define MDIO_CLK_SEL_SHFT 24 ++#define MDIO_START BIT(23) ++#define SUP_PREAMBLE BIT(22) ++#define MDIO_RD_NWR BIT(21) ++#define MDIO_REG_ADDR_BMSK 0x1f0000 ++#define MDIO_REG_ADDR_SHFT 16 ++#define MDIO_DATA_BMSK 0xffff ++#define MDIO_DATA_SHFT 0 ++ ++/* EMAC_PHY_STS */ ++#define PHY_ADDR_BMSK 0x1f0000 ++#define PHY_ADDR_SHFT 16 ++ ++#define MDIO_CLK_25_4 0 ++#define MDIO_CLK_25_28 7 ++ ++#define MDIO_WAIT_TIMES 1000 ++ ++#define EMAC_LINK_SPEED_DEFAULT (\ ++ EMAC_LINK_SPEED_10_HALF |\ ++ EMAC_LINK_SPEED_10_FULL |\ ++ EMAC_LINK_SPEED_100_HALF |\ ++ EMAC_LINK_SPEED_100_FULL |\ ++ EMAC_LINK_SPEED_1GB_FULL) ++ ++/** ++ * emac_phy_mdio_autopoll_disable() - disable mdio autopoll ++ * @adpt: the emac adapter ++ * ++ * The autopoll feature takes over the MDIO bus. In order for ++ * the PHY driver to be able to talk to the PHY over the MDIO ++ * bus, we need to temporarily disable the autopoll feature. ++ */ ++static int emac_phy_mdio_autopoll_disable(struct emac_adapter *adpt) ++{ ++ u32 val; ++ ++ /* disable autopoll */ ++ emac_reg_update32(adpt->base + EMAC_MDIO_CTRL, MDIO_AP_EN, 0); ++ ++ /* wait for any mdio polling to complete */ ++ if (!readl_poll_timeout(adpt->base + EMAC_MDIO_CTRL, val, ++ !(val & MDIO_BUSY), 100, MDIO_WAIT_TIMES * 100)) ++ return 0; ++ ++ /* failed to disable; ensure it is enabled before returning */ ++ emac_reg_update32(adpt->base + EMAC_MDIO_CTRL, 0, MDIO_AP_EN); ++ ++ return -EBUSY; ++} ++ ++/** ++ * emac_phy_mdio_autopoll_disable() - disable mdio autopoll ++ * @adpt: the emac adapter ++ * ++ * The EMAC has the ability to poll the external PHY on the MDIO ++ * bus for link state changes. This eliminates the need for the ++ * driver to poll the phy. If if the link state does change, ++ * the EMAC issues an interrupt on behalf of the PHY. ++ */ ++static void emac_phy_mdio_autopoll_enable(struct emac_adapter *adpt) ++{ ++ emac_reg_update32(adpt->base + EMAC_MDIO_CTRL, 0, MDIO_AP_EN); ++} ++ ++static int emac_mdio_read(struct mii_bus *bus, int addr, int regnum) ++{ ++ struct emac_adapter *adpt = bus->priv; ++ u32 reg; ++ int ret; ++ ++ ret = emac_phy_mdio_autopoll_disable(adpt); ++ if (ret) ++ return ret; ++ ++ emac_reg_update32(adpt->base + EMAC_PHY_STS, PHY_ADDR_BMSK, ++ (addr << PHY_ADDR_SHFT)); ++ ++ reg = SUP_PREAMBLE | ++ ((MDIO_CLK_25_4 << MDIO_CLK_SEL_SHFT) & MDIO_CLK_SEL_BMSK) | ++ ((regnum << MDIO_REG_ADDR_SHFT) & MDIO_REG_ADDR_BMSK) | ++ MDIO_START | MDIO_RD_NWR; ++ ++ writel(reg, adpt->base + EMAC_MDIO_CTRL); ++ ++ if (readl_poll_timeout(adpt->base + EMAC_MDIO_CTRL, reg, ++ !(reg & (MDIO_START | MDIO_BUSY)), ++ 100, MDIO_WAIT_TIMES * 100)) ++ ret = -EIO; ++ else ++ ret = (reg >> MDIO_DATA_SHFT) & MDIO_DATA_BMSK; ++ ++ emac_phy_mdio_autopoll_enable(adpt); ++ ++ return ret; ++} ++ ++static int emac_mdio_write(struct mii_bus *bus, int addr, int regnum, u16 val) ++{ ++ struct emac_adapter *adpt = bus->priv; ++ u32 reg; ++ int ret; ++ ++ ret = emac_phy_mdio_autopoll_disable(adpt); ++ if (ret) ++ return ret; ++ ++ emac_reg_update32(adpt->base + EMAC_PHY_STS, PHY_ADDR_BMSK, ++ (addr << PHY_ADDR_SHFT)); ++ ++ reg = SUP_PREAMBLE | ++ ((MDIO_CLK_25_4 << MDIO_CLK_SEL_SHFT) & MDIO_CLK_SEL_BMSK) | ++ ((regnum << MDIO_REG_ADDR_SHFT) & MDIO_REG_ADDR_BMSK) | ++ ((val << MDIO_DATA_SHFT) & MDIO_DATA_BMSK) | ++ MDIO_START; ++ ++ writel(reg, adpt->base + EMAC_MDIO_CTRL); ++ ++ if (readl_poll_timeout(adpt->base + EMAC_MDIO_CTRL, reg, ++ !(reg & (MDIO_START | MDIO_BUSY)), 100, ++ MDIO_WAIT_TIMES * 100)) ++ ret = -EIO; ++ ++ emac_phy_mdio_autopoll_enable(adpt); ++ ++ return ret; ++} ++ ++/* Configure the MDIO bus and connect the external PHY */ ++int emac_phy_config(struct platform_device *pdev, struct emac_adapter *adpt) ++{ ++ struct device_node *np = pdev->dev.of_node; ++ struct device_node *phy_np; ++ struct mii_bus *mii_bus; ++ int ret; ++ ++ /* Create the mii_bus object for talking to the MDIO bus */ ++ adpt->mii_bus = mii_bus = devm_mdiobus_alloc(&pdev->dev); ++ if (!mii_bus) ++ return -ENOMEM; ++ ++ mii_bus->name = "emac-mdio"; ++ snprintf(mii_bus->id, MII_BUS_ID_SIZE, "%s", pdev->name); ++ mii_bus->read = emac_mdio_read; ++ mii_bus->write = emac_mdio_write; ++ mii_bus->parent = &pdev->dev; ++ mii_bus->priv = adpt; ++ ++ ret = of_mdiobus_register(mii_bus, np); ++ if (ret) { ++ dev_err(&pdev->dev, "could not register mdio bus\n"); ++ return ret; ++ } ++ ++ phy_np = of_parse_phandle(np, "phy-handle", 0); ++ adpt->phydev = of_phy_find_device(phy_np); ++ if (!adpt->phydev) { ++ dev_err(&pdev->dev, "could not find external phy\n"); ++ mdiobus_unregister(mii_bus); ++ return -ENODEV; ++ } ++ ++ if (adpt->phydev->drv) ++ phy_attached_print(adpt->phydev, NULL); ++ ++ return 0; ++} +diff --git a/drivers/net/ethernet/qualcomm/emac/emac-phy.h b/drivers/net/ethernet/qualcomm/emac/emac-phy.h +new file mode 100644 +index 0000000..49f3701 +--- /dev/null ++++ b/drivers/net/ethernet/qualcomm/emac/emac-phy.h +@@ -0,0 +1,33 @@ ++/* Copyright (c) 2015-2016, The Linux Foundation. All rights reserved. ++* ++* This program is free software; you can redistribute it and/or modify ++* it under the terms of the GNU General Public License version 2 and ++* only version 2 as published by the Free Software Foundation. ++* ++* This program is distributed in the hope that it will be useful, ++* but WITHOUT ANY WARRANTY; without even the implied warranty of ++* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++* GNU General Public License for more details. ++*/ ++ ++#ifndef _EMAC_PHY_H_ ++#define _EMAC_PHY_H_ ++ ++typedef int (*emac_sgmii_initialize)(struct emac_adapter *adpt); ++ ++/** emac_phy - internal emac phy ++ * @base base address ++ * @digital per-lane digital block ++ * @initialize initialization function ++ */ ++struct emac_phy { ++ void __iomem *base; ++ void __iomem *digital; ++ emac_sgmii_initialize initialize; ++}; ++ ++struct emac_adapter; ++ ++int emac_phy_config(struct platform_device *pdev, struct emac_adapter *adpt); ++ ++#endif /* _EMAC_PHY_H_ */ +diff --git a/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c b/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c +new file mode 100644 +index 0000000..6ab0a3c +--- /dev/null ++++ b/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c +@@ -0,0 +1,721 @@ ++/* Copyright (c) 2015-2016, The Linux Foundation. All rights reserved. ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 and ++ * only version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++/* Qualcomm Technologies, Inc. EMAC SGMII Controller driver. ++ */ ++ ++#include <linux/iopoll.h> ++#include <linux/of_device.h> ++#include "emac.h" ++#include "emac-mac.h" ++#include "emac-sgmii.h" ++ ++/* EMAC_QSERDES register offsets */ ++#define EMAC_QSERDES_COM_SYS_CLK_CTRL 0x000000 ++#define EMAC_QSERDES_COM_PLL_CNTRL 0x000014 ++#define EMAC_QSERDES_COM_PLL_IP_SETI 0x000018 ++#define EMAC_QSERDES_COM_PLL_CP_SETI 0x000024 ++#define EMAC_QSERDES_COM_PLL_IP_SETP 0x000028 ++#define EMAC_QSERDES_COM_PLL_CP_SETP 0x00002c ++#define EMAC_QSERDES_COM_SYSCLK_EN_SEL 0x000038 ++#define EMAC_QSERDES_COM_RESETSM_CNTRL 0x000040 ++#define EMAC_QSERDES_COM_PLLLOCK_CMP1 0x000044 ++#define EMAC_QSERDES_COM_PLLLOCK_CMP2 0x000048 ++#define EMAC_QSERDES_COM_PLLLOCK_CMP3 0x00004c ++#define EMAC_QSERDES_COM_PLLLOCK_CMP_EN 0x000050 ++#define EMAC_QSERDES_COM_DEC_START1 0x000064 ++#define EMAC_QSERDES_COM_DIV_FRAC_START1 0x000098 ++#define EMAC_QSERDES_COM_DIV_FRAC_START2 0x00009c ++#define EMAC_QSERDES_COM_DIV_FRAC_START3 0x0000a0 ++#define EMAC_QSERDES_COM_DEC_START2 0x0000a4 ++#define EMAC_QSERDES_COM_PLL_CRCTRL 0x0000ac ++#define EMAC_QSERDES_COM_RESET_SM 0x0000bc ++#define EMAC_QSERDES_TX_BIST_MODE_LANENO 0x000100 ++#define EMAC_QSERDES_TX_TX_EMP_POST1_LVL 0x000108 ++#define EMAC_QSERDES_TX_TX_DRV_LVL 0x00010c ++#define EMAC_QSERDES_TX_LANE_MODE 0x000150 ++#define EMAC_QSERDES_TX_TRAN_DRVR_EMP_EN 0x000170 ++#define EMAC_QSERDES_RX_CDR_CONTROL 0x000200 ++#define EMAC_QSERDES_RX_CDR_CONTROL2 0x000210 ++#define EMAC_QSERDES_RX_RX_EQ_GAIN12 0x000230 ++ ++/* EMAC_SGMII register offsets */ ++#define EMAC_SGMII_PHY_SERDES_START 0x000000 ++#define EMAC_SGMII_PHY_CMN_PWR_CTRL 0x000004 ++#define EMAC_SGMII_PHY_RX_PWR_CTRL 0x000008 ++#define EMAC_SGMII_PHY_TX_PWR_CTRL 0x00000C ++#define EMAC_SGMII_PHY_LANE_CTRL1 0x000018 ++#define EMAC_SGMII_PHY_AUTONEG_CFG2 0x000048 ++#define EMAC_SGMII_PHY_CDR_CTRL0 0x000058 ++#define EMAC_SGMII_PHY_SPEED_CFG1 0x000074 ++#define EMAC_SGMII_PHY_POW_DWN_CTRL0 0x000080 ++#define EMAC_SGMII_PHY_RESET_CTRL 0x0000a8 ++#define EMAC_SGMII_PHY_IRQ_CMD 0x0000ac ++#define EMAC_SGMII_PHY_INTERRUPT_CLEAR 0x0000b0 ++#define EMAC_SGMII_PHY_INTERRUPT_MASK 0x0000b4 ++#define EMAC_SGMII_PHY_INTERRUPT_STATUS 0x0000b8 ++#define EMAC_SGMII_PHY_RX_CHK_STATUS 0x0000d4 ++#define EMAC_SGMII_PHY_AUTONEG0_STATUS 0x0000e0 ++#define EMAC_SGMII_PHY_AUTONEG1_STATUS 0x0000e4 ++ ++/* EMAC_QSERDES_COM_PLL_IP_SETI */ ++#define PLL_IPSETI(x) ((x) & 0x3f) ++ ++/* EMAC_QSERDES_COM_PLL_CP_SETI */ ++#define PLL_CPSETI(x) ((x) & 0xff) ++ ++/* EMAC_QSERDES_COM_PLL_IP_SETP */ ++#define PLL_IPSETP(x) ((x) & 0x3f) ++ ++/* EMAC_QSERDES_COM_PLL_CP_SETP */ ++#define PLL_CPSETP(x) ((x) & 0x1f) ++ ++/* EMAC_QSERDES_COM_PLL_CRCTRL */ ++#define PLL_RCTRL(x) (((x) & 0xf) << 4) ++#define PLL_CCTRL(x) ((x) & 0xf) ++ ++/* SGMII v2 PHY registers per lane */ ++#define EMAC_SGMII_PHY_LN_OFFSET 0x0400 ++ ++/* SGMII v2 digital lane registers */ ++#define EMAC_SGMII_LN_DRVR_CTRL0 0x00C ++#define EMAC_SGMII_LN_DRVR_TAP_EN 0x018 ++#define EMAC_SGMII_LN_TX_MARGINING 0x01C ++#define EMAC_SGMII_LN_TX_PRE 0x020 ++#define EMAC_SGMII_LN_TX_POST 0x024 ++#define EMAC_SGMII_LN_TX_BAND_MODE 0x060 ++#define EMAC_SGMII_LN_LANE_MODE 0x064 ++#define EMAC_SGMII_LN_PARALLEL_RATE 0x078 ++#define EMAC_SGMII_LN_CML_CTRL_MODE0 0x0B8 ++#define EMAC_SGMII_LN_MIXER_CTRL_MODE0 0x0D0 ++#define EMAC_SGMII_LN_VGA_INITVAL 0x134 ++#define EMAC_SGMII_LN_UCDR_FO_GAIN_MODE0 0x17C ++#define EMAC_SGMII_LN_UCDR_SO_GAIN_MODE0 0x188 ++#define EMAC_SGMII_LN_UCDR_SO_CONFIG 0x194 ++#define EMAC_SGMII_LN_RX_BAND 0x19C ++#define EMAC_SGMII_LN_RX_RCVR_PATH1_MODE0 0x1B8 ++#define EMAC_SGMII_LN_RSM_CONFIG 0x1F0 ++#define EMAC_SGMII_LN_SIGDET_ENABLES 0x224 ++#define EMAC_SGMII_LN_SIGDET_CNTRL 0x228 ++#define EMAC_SGMII_LN_SIGDET_DEGLITCH_CNTRL 0x22C ++#define EMAC_SGMII_LN_RX_EN_SIGNAL 0x2A0 ++#define EMAC_SGMII_LN_RX_MISC_CNTRL0 0x2AC ++#define EMAC_SGMII_LN_DRVR_LOGIC_CLKDIV 0x2BC ++ ++/* SGMII v2 digital lane register values */ ++#define UCDR_STEP_BY_TWO_MODE0 BIT(7) ++#define UCDR_xO_GAIN_MODE(x) ((x) & 0x7f) ++#define UCDR_ENABLE BIT(6) ++#define UCDR_SO_SATURATION(x) ((x) & 0x3f) ++#define SIGDET_LP_BYP_PS4 BIT(7) ++#define SIGDET_EN_PS0_TO_PS2 BIT(6) ++#define EN_ACCOUPLEVCM_SW_MUX BIT(5) ++#define EN_ACCOUPLEVCM_SW BIT(4) ++#define RX_SYNC_EN BIT(3) ++#define RXTERM_HIGHZ_PS5 BIT(2) ++#define SIGDET_EN_PS3 BIT(1) ++#define EN_ACCOUPLE_VCM_PS3 BIT(0) ++#define UFS_MODE BIT(5) ++#define TXVAL_VALID_INIT BIT(4) ++#define TXVAL_VALID_MUX BIT(3) ++#define TXVAL_VALID BIT(2) ++#define USB3P1_MODE BIT(1) ++#define KR_PCIGEN3_MODE BIT(0) ++#define PRE_EN BIT(3) ++#define POST_EN BIT(2) ++#define MAIN_EN_MUX BIT(1) ++#define MAIN_EN BIT(0) ++#define TX_MARGINING_MUX BIT(6) ++#define TX_MARGINING(x) ((x) & 0x3f) ++#define TX_PRE_MUX BIT(6) ++#define TX_PRE(x) ((x) & 0x3f) ++#define TX_POST_MUX BIT(6) ++#define TX_POST(x) ((x) & 0x3f) ++#define CML_GEAR_MODE(x) (((x) & 7) << 3) ++#define CML2CMOS_IBOOST_MODE(x) ((x) & 7) ++#define MIXER_LOADB_MODE(x) (((x) & 0xf) << 2) ++#define MIXER_DATARATE_MODE(x) ((x) & 3) ++#define VGA_THRESH_DFE(x) ((x) & 0x3f) ++#define SIGDET_LP_BYP_PS0_TO_PS2 BIT(5) ++#define SIGDET_LP_BYP_MUX BIT(4) ++#define SIGDET_LP_BYP BIT(3) ++#define SIGDET_EN_MUX BIT(2) ++#define SIGDET_EN BIT(1) ++#define SIGDET_FLT_BYP BIT(0) ++#define SIGDET_LVL(x) (((x) & 0xf) << 4) ++#define SIGDET_BW_CTRL(x) ((x) & 0xf) ++#define SIGDET_DEGLITCH_CTRL(x) (((x) & 0xf) << 1) ++#define SIGDET_DEGLITCH_BYP BIT(0) ++#define INVERT_PCS_RX_CLK BIT(7) ++#define PWM_EN BIT(6) ++#define RXBIAS_SEL(x) (((x) & 0x3) << 4) ++#define EBDAC_SIGN BIT(3) ++#define EDAC_SIGN BIT(2) ++#define EN_AUXTAP1SIGN_INVERT BIT(1) ++#define EN_DAC_CHOPPING BIT(0) ++#define DRVR_LOGIC_CLK_EN BIT(4) ++#define DRVR_LOGIC_CLK_DIV(x) ((x) & 0xf) ++#define PARALLEL_RATE_MODE2(x) (((x) & 0x3) << 4) ++#define PARALLEL_RATE_MODE1(x) (((x) & 0x3) << 2) ++#define PARALLEL_RATE_MODE0(x) ((x) & 0x3) ++#define BAND_MODE2(x) (((x) & 0x3) << 4) ++#define BAND_MODE1(x) (((x) & 0x3) << 2) ++#define BAND_MODE0(x) ((x) & 0x3) ++#define LANE_SYNC_MODE BIT(5) ++#define LANE_MODE(x) ((x) & 0x1f) ++#define CDR_PD_SEL_MODE0(x) (((x) & 0x3) << 5) ++#define EN_DLL_MODE0 BIT(4) ++#define EN_IQ_DCC_MODE0 BIT(3) ++#define EN_IQCAL_MODE0 BIT(2) ++#define EN_QPATH_MODE0 BIT(1) ++#define EN_EPATH_MODE0 BIT(0) ++#define FORCE_TSYNC_ACK BIT(7) ++#define FORCE_CMN_ACK BIT(6) ++#define FORCE_CMN_READY BIT(5) ++#define EN_RCLK_DEGLITCH BIT(4) ++#define BYPASS_RSM_CDR_RESET BIT(3) ++#define BYPASS_RSM_TSYNC BIT(2) ++#define BYPASS_RSM_SAMP_CAL BIT(1) ++#define BYPASS_RSM_DLL_CAL BIT(0) ++ ++/* EMAC_QSERDES_COM_SYS_CLK_CTRL */ ++#define SYSCLK_CM BIT(4) ++#define SYSCLK_AC_COUPLE BIT(3) ++ ++/* EMAC_QSERDES_COM_PLL_CNTRL */ ++#define OCP_EN BIT(5) ++#define PLL_DIV_FFEN BIT(2) ++#define PLL_DIV_ORD BIT(1) ++ ++/* EMAC_QSERDES_COM_SYSCLK_EN_SEL */ ++#define SYSCLK_SEL_CMOS BIT(3) ++ ++/* EMAC_QSERDES_COM_RESETSM_CNTRL */ ++#define FRQ_TUNE_MODE BIT(4) ++ ++/* EMAC_QSERDES_COM_PLLLOCK_CMP_EN */ ++#define PLLLOCK_CMP_EN BIT(0) ++ ++/* EMAC_QSERDES_COM_DEC_START1 */ ++#define DEC_START1_MUX BIT(7) ++#define DEC_START1(x) ((x) & 0x7f) ++ ++/* EMAC_QSERDES_COM_DIV_FRAC_START1 * EMAC_QSERDES_COM_DIV_FRAC_START2 */ ++#define DIV_FRAC_START_MUX BIT(7) ++#define DIV_FRAC_START(x) ((x) & 0x7f) ++ ++/* EMAC_QSERDES_COM_DIV_FRAC_START3 */ ++#define DIV_FRAC_START3_MUX BIT(4) ++#define DIV_FRAC_START3(x) ((x) & 0xf) ++ ++/* EMAC_QSERDES_COM_DEC_START2 */ ++#define DEC_START2_MUX BIT(1) ++#define DEC_START2 BIT(0) ++ ++/* EMAC_QSERDES_COM_RESET_SM */ ++#define READY BIT(5) ++ ++/* EMAC_QSERDES_TX_TX_EMP_POST1_LVL */ ++#define TX_EMP_POST1_LVL_MUX BIT(5) ++#define TX_EMP_POST1_LVL(x) ((x) & 0x1f) ++#define TX_EMP_POST1_LVL_BMSK 0x1f ++#define TX_EMP_POST1_LVL_SHFT 0 ++ ++/* EMAC_QSERDES_TX_TX_DRV_LVL */ ++#define TX_DRV_LVL_MUX BIT(4) ++#define TX_DRV_LVL(x) ((x) & 0xf) ++ ++/* EMAC_QSERDES_TX_TRAN_DRVR_EMP_EN */ ++#define EMP_EN_MUX BIT(1) ++#define EMP_EN BIT(0) ++ ++/* EMAC_QSERDES_RX_CDR_CONTROL & EMAC_QSERDES_RX_CDR_CONTROL2 */ ++#define HBW_PD_EN BIT(7) ++#define SECONDORDERENABLE BIT(6) ++#define FIRSTORDER_THRESH(x) (((x) & 0x7) << 3) ++#define SECONDORDERGAIN(x) ((x) & 0x7) ++ ++/* EMAC_QSERDES_RX_RX_EQ_GAIN12 */ ++#define RX_EQ_GAIN2(x) (((x) & 0xf) << 4) ++#define RX_EQ_GAIN1(x) ((x) & 0xf) ++ ++/* EMAC_SGMII_PHY_SERDES_START */ ++#define SERDES_START BIT(0) ++ ++/* EMAC_SGMII_PHY_CMN_PWR_CTRL */ ++#define BIAS_EN BIT(6) ++#define PLL_EN BIT(5) ++#define SYSCLK_EN BIT(4) ++#define CLKBUF_L_EN BIT(3) ++#define PLL_TXCLK_EN BIT(1) ++#define PLL_RXCLK_EN BIT(0) ++ ++/* EMAC_SGMII_PHY_RX_PWR_CTRL */ ++#define L0_RX_SIGDET_EN BIT(7) ++#define L0_RX_TERM_MODE(x) (((x) & 3) << 4) ++#define L0_RX_I_EN BIT(1) ++ ++/* EMAC_SGMII_PHY_TX_PWR_CTRL */ ++#define L0_TX_EN BIT(5) ++#define L0_CLKBUF_EN BIT(4) ++#define L0_TRAN_BIAS_EN BIT(1) ++ ++/* EMAC_SGMII_PHY_LANE_CTRL1 */ ++#define L0_RX_EQUALIZE_ENABLE BIT(6) ++#define L0_RESET_TSYNC_EN BIT(4) ++#define L0_DRV_LVL(x) ((x) & 0xf) ++ ++/* EMAC_SGMII_PHY_AUTONEG_CFG2 */ ++#define FORCE_AN_TX_CFG BIT(5) ++#define FORCE_AN_RX_CFG BIT(4) ++#define AN_ENABLE BIT(0) ++ ++/* EMAC_SGMII_PHY_SPEED_CFG1 */ ++#define DUPLEX_MODE BIT(4) ++#define SPDMODE_1000 BIT(1) ++#define SPDMODE_100 BIT(0) ++#define SPDMODE_10 0 ++#define SPDMODE_BMSK 3 ++#define SPDMODE_SHFT 0 ++ ++/* EMAC_SGMII_PHY_POW_DWN_CTRL0 */ ++#define PWRDN_B BIT(0) ++#define CDR_MAX_CNT(x) ((x) & 0xff) ++ ++/* EMAC_QSERDES_TX_BIST_MODE_LANENO */ ++#define BIST_LANE_NUMBER(x) (((x) & 3) << 5) ++#define BISTMODE(x) ((x) & 0x1f) ++ ++/* EMAC_QSERDES_COM_PLLLOCK_CMPx */ ++#define PLLLOCK_CMP(x) ((x) & 0xff) ++ ++/* EMAC_SGMII_PHY_RESET_CTRL */ ++#define PHY_SW_RESET BIT(0) ++ ++/* EMAC_SGMII_PHY_IRQ_CMD */ ++#define IRQ_GLOBAL_CLEAR BIT(0) ++ ++/* EMAC_SGMII_PHY_INTERRUPT_MASK */ ++#define DECODE_CODE_ERR BIT(7) ++#define DECODE_DISP_ERR BIT(6) ++#define PLL_UNLOCK BIT(5) ++#define AN_ILLEGAL_TERM BIT(4) ++#define SYNC_FAIL BIT(3) ++#define AN_START BIT(2) ++#define AN_END BIT(1) ++#define AN_REQUEST BIT(0) ++ ++#define SGMII_PHY_IRQ_CLR_WAIT_TIME 10 ++ ++#define SGMII_PHY_INTERRUPT_ERR (\ ++ DECODE_CODE_ERR |\ ++ DECODE_DISP_ERR) ++ ++#define SGMII_ISR_AN_MASK (\ ++ AN_REQUEST |\ ++ AN_START |\ ++ AN_END |\ ++ AN_ILLEGAL_TERM |\ ++ PLL_UNLOCK |\ ++ SYNC_FAIL) ++ ++#define SGMII_ISR_MASK (\ ++ SGMII_PHY_INTERRUPT_ERR |\ ++ SGMII_ISR_AN_MASK) ++ ++/* SGMII TX_CONFIG */ ++#define TXCFG_LINK 0x8000 ++#define TXCFG_MODE_BMSK 0x1c00 ++#define TXCFG_1000_FULL 0x1800 ++#define TXCFG_100_FULL 0x1400 ++#define TXCFG_100_HALF 0x0400 ++#define TXCFG_10_FULL 0x1000 ++#define TXCFG_10_HALF 0x0000 ++ ++#define SERDES_START_WAIT_TIMES 100 ++ ++struct emac_reg_write { ++ unsigned int offset; ++ u32 val; ++}; ++ ++static void emac_reg_write_all(void __iomem *base, ++ const struct emac_reg_write *itr, size_t size) ++{ ++ size_t i; ++ ++ for (i = 0; i < size; ++itr, ++i) ++ writel(itr->val, base + itr->offset); ++} ++ ++static const struct emac_reg_write physical_coding_sublayer_programming_v1[] = { ++ {EMAC_SGMII_PHY_CDR_CTRL0, CDR_MAX_CNT(15)}, ++ {EMAC_SGMII_PHY_POW_DWN_CTRL0, PWRDN_B}, ++ {EMAC_SGMII_PHY_CMN_PWR_CTRL, ++ BIAS_EN | SYSCLK_EN | CLKBUF_L_EN | PLL_TXCLK_EN | PLL_RXCLK_EN}, ++ {EMAC_SGMII_PHY_TX_PWR_CTRL, L0_TX_EN | L0_CLKBUF_EN | L0_TRAN_BIAS_EN}, ++ {EMAC_SGMII_PHY_RX_PWR_CTRL, ++ L0_RX_SIGDET_EN | L0_RX_TERM_MODE(1) | L0_RX_I_EN}, ++ {EMAC_SGMII_PHY_CMN_PWR_CTRL, ++ BIAS_EN | PLL_EN | SYSCLK_EN | CLKBUF_L_EN | PLL_TXCLK_EN | ++ PLL_RXCLK_EN}, ++ {EMAC_SGMII_PHY_LANE_CTRL1, ++ L0_RX_EQUALIZE_ENABLE | L0_RESET_TSYNC_EN | L0_DRV_LVL(15)}, ++}; ++ ++static const struct emac_reg_write sysclk_refclk_setting[] = { ++ {EMAC_QSERDES_COM_SYSCLK_EN_SEL, SYSCLK_SEL_CMOS}, ++ {EMAC_QSERDES_COM_SYS_CLK_CTRL, SYSCLK_CM | SYSCLK_AC_COUPLE}, ++}; ++ ++static const struct emac_reg_write pll_setting[] = { ++ {EMAC_QSERDES_COM_PLL_IP_SETI, PLL_IPSETI(1)}, ++ {EMAC_QSERDES_COM_PLL_CP_SETI, PLL_CPSETI(59)}, ++ {EMAC_QSERDES_COM_PLL_IP_SETP, PLL_IPSETP(10)}, ++ {EMAC_QSERDES_COM_PLL_CP_SETP, PLL_CPSETP(9)}, ++ {EMAC_QSERDES_COM_PLL_CRCTRL, PLL_RCTRL(15) | PLL_CCTRL(11)}, ++ {EMAC_QSERDES_COM_PLL_CNTRL, OCP_EN | PLL_DIV_FFEN | PLL_DIV_ORD}, ++ {EMAC_QSERDES_COM_DEC_START1, DEC_START1_MUX | DEC_START1(2)}, ++ {EMAC_QSERDES_COM_DEC_START2, DEC_START2_MUX | DEC_START2}, ++ {EMAC_QSERDES_COM_DIV_FRAC_START1, ++ DIV_FRAC_START_MUX | DIV_FRAC_START(85)}, ++ {EMAC_QSERDES_COM_DIV_FRAC_START2, ++ DIV_FRAC_START_MUX | DIV_FRAC_START(42)}, ++ {EMAC_QSERDES_COM_DIV_FRAC_START3, ++ DIV_FRAC_START3_MUX | DIV_FRAC_START3(3)}, ++ {EMAC_QSERDES_COM_PLLLOCK_CMP1, PLLLOCK_CMP(43)}, ++ {EMAC_QSERDES_COM_PLLLOCK_CMP2, PLLLOCK_CMP(104)}, ++ {EMAC_QSERDES_COM_PLLLOCK_CMP3, PLLLOCK_CMP(0)}, ++ {EMAC_QSERDES_COM_PLLLOCK_CMP_EN, PLLLOCK_CMP_EN}, ++ {EMAC_QSERDES_COM_RESETSM_CNTRL, FRQ_TUNE_MODE}, ++}; ++ ++static const struct emac_reg_write cdr_setting[] = { ++ {EMAC_QSERDES_RX_CDR_CONTROL, ++ SECONDORDERENABLE | FIRSTORDER_THRESH(3) | SECONDORDERGAIN(2)}, ++ {EMAC_QSERDES_RX_CDR_CONTROL2, ++ SECONDORDERENABLE | FIRSTORDER_THRESH(3) | SECONDORDERGAIN(4)}, ++}; ++ ++static const struct emac_reg_write tx_rx_setting[] = { ++ {EMAC_QSERDES_TX_BIST_MODE_LANENO, 0}, ++ {EMAC_QSERDES_TX_TX_DRV_LVL, TX_DRV_LVL_MUX | TX_DRV_LVL(15)}, ++ {EMAC_QSERDES_TX_TRAN_DRVR_EMP_EN, EMP_EN_MUX | EMP_EN}, ++ {EMAC_QSERDES_TX_TX_EMP_POST1_LVL, ++ TX_EMP_POST1_LVL_MUX | TX_EMP_POST1_LVL(1)}, ++ {EMAC_QSERDES_RX_RX_EQ_GAIN12, RX_EQ_GAIN2(15) | RX_EQ_GAIN1(15)}, ++ {EMAC_QSERDES_TX_LANE_MODE, LANE_MODE(8)}, ++}; ++ ++static const struct emac_reg_write sgmii_v2_laned[] = { ++ /* CDR Settings */ ++ {EMAC_SGMII_LN_UCDR_FO_GAIN_MODE0, ++ UCDR_STEP_BY_TWO_MODE0 | UCDR_xO_GAIN_MODE(10)}, ++ {EMAC_SGMII_LN_UCDR_SO_GAIN_MODE0, UCDR_xO_GAIN_MODE(6)}, ++ {EMAC_SGMII_LN_UCDR_SO_CONFIG, UCDR_ENABLE | UCDR_SO_SATURATION(12)}, ++ ++ /* TX/RX Settings */ ++ {EMAC_SGMII_LN_RX_EN_SIGNAL, SIGDET_LP_BYP_PS4 | SIGDET_EN_PS0_TO_PS2}, ++ ++ {EMAC_SGMII_LN_DRVR_CTRL0, TXVAL_VALID_INIT | KR_PCIGEN3_MODE}, ++ {EMAC_SGMII_LN_DRVR_TAP_EN, MAIN_EN}, ++ {EMAC_SGMII_LN_TX_MARGINING, TX_MARGINING_MUX | TX_MARGINING(25)}, ++ {EMAC_SGMII_LN_TX_PRE, TX_PRE_MUX}, ++ {EMAC_SGMII_LN_TX_POST, TX_POST_MUX}, ++ ++ {EMAC_SGMII_LN_CML_CTRL_MODE0, ++ CML_GEAR_MODE(1) | CML2CMOS_IBOOST_MODE(1)}, ++ {EMAC_SGMII_LN_MIXER_CTRL_MODE0, ++ MIXER_LOADB_MODE(12) | MIXER_DATARATE_MODE(1)}, ++ {EMAC_SGMII_LN_VGA_INITVAL, VGA_THRESH_DFE(31)}, ++ {EMAC_SGMII_LN_SIGDET_ENABLES, ++ SIGDET_LP_BYP_PS0_TO_PS2 | SIGDET_FLT_BYP}, ++ {EMAC_SGMII_LN_SIGDET_CNTRL, SIGDET_LVL(8)}, ++ ++ {EMAC_SGMII_LN_SIGDET_DEGLITCH_CNTRL, SIGDET_DEGLITCH_CTRL(4)}, ++ {EMAC_SGMII_LN_RX_MISC_CNTRL0, 0}, ++ {EMAC_SGMII_LN_DRVR_LOGIC_CLKDIV, ++ DRVR_LOGIC_CLK_EN | DRVR_LOGIC_CLK_DIV(4)}, ++ ++ {EMAC_SGMII_LN_PARALLEL_RATE, PARALLEL_RATE_MODE0(1)}, ++ {EMAC_SGMII_LN_TX_BAND_MODE, BAND_MODE0(2)}, ++ {EMAC_SGMII_LN_RX_BAND, BAND_MODE0(3)}, ++ {EMAC_SGMII_LN_LANE_MODE, LANE_MODE(26)}, ++ {EMAC_SGMII_LN_RX_RCVR_PATH1_MODE0, CDR_PD_SEL_MODE0(3)}, ++ {EMAC_SGMII_LN_RSM_CONFIG, BYPASS_RSM_SAMP_CAL | BYPASS_RSM_DLL_CAL}, ++}; ++ ++static const struct emac_reg_write physical_coding_sublayer_programming_v2[] = { ++ {EMAC_SGMII_PHY_POW_DWN_CTRL0, PWRDN_B}, ++ {EMAC_SGMII_PHY_CDR_CTRL0, CDR_MAX_CNT(15)}, ++ {EMAC_SGMII_PHY_TX_PWR_CTRL, 0}, ++ {EMAC_SGMII_PHY_LANE_CTRL1, L0_RX_EQUALIZE_ENABLE}, ++}; ++ ++static int emac_sgmii_link_init(struct emac_adapter *adpt) ++{ ++ struct phy_device *phydev = adpt->phydev; ++ struct emac_phy *phy = &adpt->phy; ++ u32 val; ++ ++ val = readl(phy->base + EMAC_SGMII_PHY_AUTONEG_CFG2); ++ ++ if (phydev->autoneg == AUTONEG_ENABLE) { ++ val &= ~(FORCE_AN_RX_CFG | FORCE_AN_TX_CFG); ++ val |= AN_ENABLE; ++ writel(val, phy->base + EMAC_SGMII_PHY_AUTONEG_CFG2); ++ } else { ++ u32 speed_cfg; ++ ++ switch (phydev->speed) { ++ case SPEED_10: ++ speed_cfg = SPDMODE_10; ++ break; ++ case SPEED_100: ++ speed_cfg = SPDMODE_100; ++ break; ++ case SPEED_1000: ++ speed_cfg = SPDMODE_1000; ++ break; ++ default: ++ return -EINVAL; ++ } ++ ++ if (phydev->duplex == DUPLEX_FULL) ++ speed_cfg |= DUPLEX_MODE; ++ ++ val &= ~AN_ENABLE; ++ writel(speed_cfg, phy->base + EMAC_SGMII_PHY_SPEED_CFG1); ++ writel(val, phy->base + EMAC_SGMII_PHY_AUTONEG_CFG2); ++ } ++ ++ return 0; ++} ++ ++static int emac_sgmii_irq_clear(struct emac_adapter *adpt, u32 irq_bits) ++{ ++ struct emac_phy *phy = &adpt->phy; ++ u32 status; ++ ++ writel_relaxed(irq_bits, phy->base + EMAC_SGMII_PHY_INTERRUPT_CLEAR); ++ writel_relaxed(IRQ_GLOBAL_CLEAR, phy->base + EMAC_SGMII_PHY_IRQ_CMD); ++ /* Ensure interrupt clear command is written to HW */ ++ wmb(); ++ ++ /* After set the IRQ_GLOBAL_CLEAR bit, the status clearing must ++ * be confirmed before clearing the bits in other registers. ++ * It takes a few cycles for hw to clear the interrupt status. ++ */ ++ if (readl_poll_timeout_atomic(phy->base + ++ EMAC_SGMII_PHY_INTERRUPT_STATUS, ++ status, !(status & irq_bits), 1, ++ SGMII_PHY_IRQ_CLR_WAIT_TIME)) { ++ netdev_err(adpt->netdev, ++ "error: failed clear SGMII irq: status:0x%x bits:0x%x\n", ++ status, irq_bits); ++ return -EIO; ++ } ++ ++ /* Finalize clearing procedure */ ++ writel_relaxed(0, phy->base + EMAC_SGMII_PHY_IRQ_CMD); ++ writel_relaxed(0, phy->base + EMAC_SGMII_PHY_INTERRUPT_CLEAR); ++ ++ /* Ensure that clearing procedure finalization is written to HW */ ++ wmb(); ++ ++ return 0; ++} ++ ++int emac_sgmii_init_v1(struct emac_adapter *adpt) ++{ ++ struct emac_phy *phy = &adpt->phy; ++ unsigned int i; ++ int ret; ++ ++ ret = emac_sgmii_link_init(adpt); ++ if (ret) ++ return ret; ++ ++ emac_reg_write_all(phy->base, physical_coding_sublayer_programming_v1, ++ ARRAY_SIZE(physical_coding_sublayer_programming_v1)); ++ emac_reg_write_all(phy->base, sysclk_refclk_setting, ++ ARRAY_SIZE(sysclk_refclk_setting)); ++ emac_reg_write_all(phy->base, pll_setting, ARRAY_SIZE(pll_setting)); ++ emac_reg_write_all(phy->base, cdr_setting, ARRAY_SIZE(cdr_setting)); ++ emac_reg_write_all(phy->base, tx_rx_setting, ++ ARRAY_SIZE(tx_rx_setting)); ++ ++ /* Power up the Ser/Des engine */ ++ writel(SERDES_START, phy->base + EMAC_SGMII_PHY_SERDES_START); ++ ++ for (i = 0; i < SERDES_START_WAIT_TIMES; i++) { ++ if (readl(phy->base + EMAC_QSERDES_COM_RESET_SM) & READY) ++ break; ++ usleep_range(100, 200); ++ } ++ ++ if (i == SERDES_START_WAIT_TIMES) { ++ netdev_err(adpt->netdev, "error: ser/des failed to start\n"); ++ return -EIO; ++ } ++ /* Mask out all the SGMII Interrupt */ ++ writel(0, phy->base + EMAC_SGMII_PHY_INTERRUPT_MASK); ++ ++ emac_sgmii_irq_clear(adpt, SGMII_PHY_INTERRUPT_ERR); ++ ++ return 0; ++} ++ ++int emac_sgmii_init_v2(struct emac_adapter *adpt) ++{ ++ struct emac_phy *phy = &adpt->phy; ++ void __iomem *phy_regs = phy->base; ++ void __iomem *laned = phy->digital; ++ unsigned int i; ++ u32 lnstatus; ++ int ret; ++ ++ ret = emac_sgmii_link_init(adpt); ++ if (ret) ++ return ret; ++ ++ /* PCS lane-x init */ ++ emac_reg_write_all(phy->base, physical_coding_sublayer_programming_v2, ++ ARRAY_SIZE(physical_coding_sublayer_programming_v2)); ++ ++ /* SGMII lane-x init */ ++ emac_reg_write_all(phy->digital, ++ sgmii_v2_laned, ARRAY_SIZE(sgmii_v2_laned)); ++ ++ /* Power up PCS and start reset lane state machine */ ++ ++ writel(0, phy_regs + EMAC_SGMII_PHY_RESET_CTRL); ++ writel(1, laned + SGMII_LN_RSM_START); ++ ++ /* Wait for c_ready assertion */ ++ for (i = 0; i < SERDES_START_WAIT_TIMES; i++) { ++ lnstatus = readl(phy_regs + SGMII_PHY_LN_LANE_STATUS); ++ if (lnstatus & BIT(1)) ++ break; ++ usleep_range(100, 200); ++ } ++ ++ if (i == SERDES_START_WAIT_TIMES) { ++ netdev_err(adpt->netdev, "SGMII failed to start\n"); ++ return -EIO; ++ } ++ ++ /* Disable digital and SERDES loopback */ ++ writel(0, phy_regs + SGMII_PHY_LN_BIST_GEN0); ++ writel(0, phy_regs + SGMII_PHY_LN_BIST_GEN2); ++ writel(0, phy_regs + SGMII_PHY_LN_CDR_CTRL1); ++ ++ /* Mask out all the SGMII Interrupt */ ++ writel(0, phy_regs + EMAC_SGMII_PHY_INTERRUPT_MASK); ++ ++ emac_sgmii_irq_clear(adpt, SGMII_PHY_INTERRUPT_ERR); ++ ++ return 0; ++} ++ ++static void emac_sgmii_reset_prepare(struct emac_adapter *adpt) ++{ ++ struct emac_phy *phy = &adpt->phy; ++ u32 val; ++ ++ /* Reset PHY */ ++ val = readl(phy->base + EMAC_EMAC_WRAPPER_CSR2); ++ writel(((val & ~PHY_RESET) | PHY_RESET), phy->base + ++ EMAC_EMAC_WRAPPER_CSR2); ++ /* Ensure phy-reset command is written to HW before the release cmd */ ++ msleep(50); ++ val = readl(phy->base + EMAC_EMAC_WRAPPER_CSR2); ++ writel((val & ~PHY_RESET), phy->base + EMAC_EMAC_WRAPPER_CSR2); ++ /* Ensure phy-reset release command is written to HW before initializing ++ * SGMII ++ */ ++ msleep(50); ++} ++ ++void emac_sgmii_reset(struct emac_adapter *adpt) ++{ ++ int ret; ++ ++ clk_set_rate(adpt->clk[EMAC_CLK_HIGH_SPEED], 19200000); ++ emac_sgmii_reset_prepare(adpt); ++ ++ ret = adpt->phy.initialize(adpt); ++ if (ret) ++ netdev_err(adpt->netdev, ++ "could not reinitialize internal PHY (error=%i)\n", ++ ret); ++ ++ clk_set_rate(adpt->clk[EMAC_CLK_HIGH_SPEED], 125000000); ++} ++ ++static const struct of_device_id emac_sgmii_dt_match[] = { ++ { ++ .compatible = "qcom,fsm9900-emac-sgmii", ++ .data = emac_sgmii_init_v1, ++ }, ++ { ++ .compatible = "qcom,qdf2432-emac-sgmii", ++ .data = emac_sgmii_init_v2, ++ }, ++ {} ++}; ++ ++int emac_sgmii_config(struct platform_device *pdev, struct emac_adapter *adpt) ++{ ++ struct platform_device *sgmii_pdev = NULL; ++ struct emac_phy *phy = &adpt->phy; ++ struct resource *res; ++ const struct of_device_id *match; ++ struct device_node *np; ++ ++ np = of_parse_phandle(pdev->dev.of_node, "internal-phy", 0); ++ if (!np) { ++ dev_err(&pdev->dev, "missing internal-phy property\n"); ++ return -ENODEV; ++ } ++ ++ sgmii_pdev = of_find_device_by_node(np); ++ if (!sgmii_pdev) { ++ dev_err(&pdev->dev, "invalid internal-phy property\n"); ++ return -ENODEV; ++ } ++ ++ match = of_match_device(emac_sgmii_dt_match, &sgmii_pdev->dev); ++ if (!match) { ++ dev_err(&pdev->dev, "unrecognized internal phy node\n"); ++ return -ENODEV; ++ } ++ ++ phy->initialize = (emac_sgmii_initialize)match->data; ++ ++ /* Base address is the first address */ ++ res = platform_get_resource(sgmii_pdev, IORESOURCE_MEM, 0); ++ phy->base = devm_ioremap_resource(&sgmii_pdev->dev, res); ++ if (IS_ERR(phy->base)) ++ return PTR_ERR(phy->base); ++ ++ /* v2 SGMII has a per-lane digital digital, so parse it if it exists */ ++ res = platform_get_resource(sgmii_pdev, IORESOURCE_MEM, 1); ++ if (res) { ++ phy->digital = devm_ioremap_resource(&sgmii_pdev->dev, res); ++ if (IS_ERR(phy->base)) ++ return PTR_ERR(phy->base); ++ ++ } ++ ++ return phy->initialize(adpt); ++} +diff --git a/drivers/net/ethernet/qualcomm/emac/emac-sgmii.h b/drivers/net/ethernet/qualcomm/emac/emac-sgmii.h +new file mode 100644 +index 0000000..ce79212 +--- /dev/null ++++ b/drivers/net/ethernet/qualcomm/emac/emac-sgmii.h +@@ -0,0 +1,24 @@ ++/* Copyright (c) 2015-2016, The Linux Foundation. All rights reserved. ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 and ++ * only version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++#ifndef _EMAC_SGMII_H_ ++#define _EMAC_SGMII_H_ ++ ++struct emac_adapter; ++struct platform_device; ++ ++int emac_sgmii_init_v1(struct emac_adapter *adpt); ++int emac_sgmii_init_v2(struct emac_adapter *adpt); ++int emac_sgmii_config(struct platform_device *pdev, struct emac_adapter *adpt); ++void emac_sgmii_reset(struct emac_adapter *adpt); ++ ++#endif +diff --git a/drivers/net/ethernet/qualcomm/emac/emac.c b/drivers/net/ethernet/qualcomm/emac/emac.c +new file mode 100644 +index 0000000..56e0a9f +--- /dev/null ++++ b/drivers/net/ethernet/qualcomm/emac/emac.c +@@ -0,0 +1,743 @@ ++/* Copyright (c) 2013-2016, The Linux Foundation. All rights reserved. ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 and ++ * only version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++/* Qualcomm Technologies, Inc. EMAC Gigabit Ethernet Driver */ ++ ++#include <linux/if_ether.h> ++#include <linux/if_vlan.h> ++#include <linux/interrupt.h> ++#include <linux/io.h> ++#include <linux/module.h> ++#include <linux/of.h> ++#include <linux/of_net.h> ++#include <linux/of_device.h> ++#include <linux/phy.h> ++#include <linux/platform_device.h> ++#include "emac.h" ++#include "emac-mac.h" ++#include "emac-phy.h" ++#include "emac-sgmii.h" ++ ++#define EMAC_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK | \ ++ NETIF_MSG_TIMER | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP) ++ ++#define EMAC_RRD_SIZE 4 ++/* The RRD size if timestamping is enabled: */ ++#define EMAC_TS_RRD_SIZE 6 ++#define EMAC_TPD_SIZE 4 ++#define EMAC_RFD_SIZE 2 ++ ++#define REG_MAC_RX_STATUS_BIN EMAC_RXMAC_STATC_REG0 ++#define REG_MAC_RX_STATUS_END EMAC_RXMAC_STATC_REG22 ++#define REG_MAC_TX_STATUS_BIN EMAC_TXMAC_STATC_REG0 ++#define REG_MAC_TX_STATUS_END EMAC_TXMAC_STATC_REG24 ++ ++#define RXQ0_NUM_RFD_PREF_DEF 8 ++#define TXQ0_NUM_TPD_PREF_DEF 5 ++ ++#define EMAC_PREAMBLE_DEF 7 ++ ++#define DMAR_DLY_CNT_DEF 15 ++#define DMAW_DLY_CNT_DEF 4 ++ ++#define IMR_NORMAL_MASK (\ ++ ISR_ERROR |\ ++ ISR_GPHY_LINK |\ ++ ISR_TX_PKT |\ ++ GPHY_WAKEUP_INT) ++ ++#define IMR_EXTENDED_MASK (\ ++ SW_MAN_INT |\ ++ ISR_OVER |\ ++ ISR_ERROR |\ ++ ISR_GPHY_LINK |\ ++ ISR_TX_PKT |\ ++ GPHY_WAKEUP_INT) ++ ++#define ISR_TX_PKT (\ ++ TX_PKT_INT |\ ++ TX_PKT_INT1 |\ ++ TX_PKT_INT2 |\ ++ TX_PKT_INT3) ++ ++#define ISR_GPHY_LINK (\ ++ GPHY_LINK_UP_INT |\ ++ GPHY_LINK_DOWN_INT) ++ ++#define ISR_OVER (\ ++ RFD0_UR_INT |\ ++ RFD1_UR_INT |\ ++ RFD2_UR_INT |\ ++ RFD3_UR_INT |\ ++ RFD4_UR_INT |\ ++ RXF_OF_INT |\ ++ TXF_UR_INT) ++ ++#define ISR_ERROR (\ ++ DMAR_TO_INT |\ ++ DMAW_TO_INT |\ ++ TXQ_TO_INT) ++ ++/* in sync with enum emac_clk_id */ ++static const char * const emac_clk_name[] = { ++ "axi_clk", "cfg_ahb_clk", "high_speed_clk", "mdio_clk", "tx_clk", ++ "rx_clk", "sys_clk" ++}; ++ ++void emac_reg_update32(void __iomem *addr, u32 mask, u32 val) ++{ ++ u32 data = readl(addr); ++ ++ writel(((data & ~mask) | val), addr); ++} ++ ++/* reinitialize */ ++int emac_reinit_locked(struct emac_adapter *adpt) ++{ ++ int ret; ++ ++ mutex_lock(&adpt->reset_lock); ++ ++ emac_mac_down(adpt); ++ emac_sgmii_reset(adpt); ++ ret = emac_mac_up(adpt); ++ ++ mutex_unlock(&adpt->reset_lock); ++ ++ return ret; ++} ++ ++/* NAPI */ ++static int emac_napi_rtx(struct napi_struct *napi, int budget) ++{ ++ struct emac_rx_queue *rx_q = ++ container_of(napi, struct emac_rx_queue, napi); ++ struct emac_adapter *adpt = netdev_priv(rx_q->netdev); ++ struct emac_irq *irq = rx_q->irq; ++ int work_done = 0; ++ ++ emac_mac_rx_process(adpt, rx_q, &work_done, budget); ++ ++ if (work_done < budget) { ++ napi_complete(napi); ++ ++ irq->mask |= rx_q->intr; ++ writel(irq->mask, adpt->base + EMAC_INT_MASK); ++ } ++ ++ return work_done; ++} ++ ++/* Transmit the packet */ ++static int emac_start_xmit(struct sk_buff *skb, struct net_device *netdev) ++{ ++ struct emac_adapter *adpt = netdev_priv(netdev); ++ ++ return emac_mac_tx_buf_send(adpt, &adpt->tx_q, skb); ++} ++ ++irqreturn_t emac_isr(int _irq, void *data) ++{ ++ struct emac_irq *irq = data; ++ struct emac_adapter *adpt = ++ container_of(irq, struct emac_adapter, irq); ++ struct emac_rx_queue *rx_q = &adpt->rx_q; ++ u32 isr, status; ++ ++ /* disable the interrupt */ ++ writel(0, adpt->base + EMAC_INT_MASK); ++ ++ isr = readl_relaxed(adpt->base + EMAC_INT_STATUS); ++ ++ status = isr & irq->mask; ++ if (status == 0) ++ goto exit; ++ ++ if (status & ISR_ERROR) { ++ netif_warn(adpt, intr, adpt->netdev, ++ "warning: error irq status 0x%lx\n", ++ status & ISR_ERROR); ++ /* reset MAC */ ++ schedule_work(&adpt->work_thread); ++ } ++ ++ /* Schedule the napi for receive queue with interrupt ++ * status bit set ++ */ ++ if (status & rx_q->intr) { ++ if (napi_schedule_prep(&rx_q->napi)) { ++ irq->mask &= ~rx_q->intr; ++ __napi_schedule(&rx_q->napi); ++ } ++ } ++ ++ if (status & TX_PKT_INT) ++ emac_mac_tx_process(adpt, &adpt->tx_q); ++ ++ if (status & ISR_OVER) ++ net_warn_ratelimited("warning: TX/RX overflow\n"); ++ ++ /* link event */ ++ if (status & ISR_GPHY_LINK) ++ phy_mac_interrupt(adpt->phydev, !!(status & GPHY_LINK_UP_INT)); ++ ++exit: ++ /* enable the interrupt */ ++ writel(irq->mask, adpt->base + EMAC_INT_MASK); ++ ++ return IRQ_HANDLED; ++} ++ ++/* Configure VLAN tag strip/insert feature */ ++static int emac_set_features(struct net_device *netdev, ++ netdev_features_t features) ++{ ++ netdev_features_t changed = features ^ netdev->features; ++ struct emac_adapter *adpt = netdev_priv(netdev); ++ ++ /* We only need to reprogram the hardware if the VLAN tag features ++ * have changed, and if it's already running. ++ */ ++ if (!(changed & (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX))) ++ return 0; ++ ++ if (!netif_running(netdev)) ++ return 0; ++ ++ /* emac_mac_mode_config() uses netdev->features to configure the EMAC, ++ * so make sure it's set first. ++ */ ++ netdev->features = features; ++ ++ return emac_reinit_locked(adpt); ++} ++ ++/* Configure Multicast and Promiscuous modes */ ++static void emac_rx_mode_set(struct net_device *netdev) ++{ ++ struct emac_adapter *adpt = netdev_priv(netdev); ++ struct netdev_hw_addr *ha; ++ ++ emac_mac_mode_config(adpt); ++ ++ /* update multicast address filtering */ ++ emac_mac_multicast_addr_clear(adpt); ++ netdev_for_each_mc_addr(ha, netdev) ++ emac_mac_multicast_addr_set(adpt, ha->addr); ++} ++ ++/* Change the Maximum Transfer Unit (MTU) */ ++static int emac_change_mtu(struct net_device *netdev, int new_mtu) ++{ ++ unsigned int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; ++ struct emac_adapter *adpt = netdev_priv(netdev); ++ ++ if ((max_frame < EMAC_MIN_ETH_FRAME_SIZE) || ++ (max_frame > EMAC_MAX_ETH_FRAME_SIZE)) { ++ netdev_err(adpt->netdev, "error: invalid MTU setting\n"); ++ return -EINVAL; ++ } ++ ++ netif_info(adpt, hw, adpt->netdev, ++ "changing MTU from %d to %d\n", netdev->mtu, ++ new_mtu); ++ netdev->mtu = new_mtu; ++ ++ if (netif_running(netdev)) ++ return emac_reinit_locked(adpt); ++ ++ return 0; ++} ++ ++/* Called when the network interface is made active */ ++static int emac_open(struct net_device *netdev) ++{ ++ struct emac_adapter *adpt = netdev_priv(netdev); ++ int ret; ++ ++ /* allocate rx/tx dma buffer & descriptors */ ++ ret = emac_mac_rx_tx_rings_alloc_all(adpt); ++ if (ret) { ++ netdev_err(adpt->netdev, "error allocating rx/tx rings\n"); ++ return ret; ++ } ++ ++ ret = emac_mac_up(adpt); ++ if (ret) { ++ emac_mac_rx_tx_rings_free_all(adpt); ++ return ret; ++ } ++ ++ emac_mac_start(adpt); ++ ++ return 0; ++} ++ ++/* Called when the network interface is disabled */ ++static int emac_close(struct net_device *netdev) ++{ ++ struct emac_adapter *adpt = netdev_priv(netdev); ++ ++ mutex_lock(&adpt->reset_lock); ++ ++ emac_mac_down(adpt); ++ emac_mac_rx_tx_rings_free_all(adpt); ++ ++ mutex_unlock(&adpt->reset_lock); ++ ++ return 0; ++} ++ ++/* Respond to a TX hang */ ++static void emac_tx_timeout(struct net_device *netdev) ++{ ++ struct emac_adapter *adpt = netdev_priv(netdev); ++ ++ schedule_work(&adpt->work_thread); ++} ++ ++/* IOCTL support for the interface */ ++static int emac_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) ++{ ++ if (!netif_running(netdev)) ++ return -EINVAL; ++ ++ if (!netdev->phydev) ++ return -ENODEV; ++ ++ return phy_mii_ioctl(netdev->phydev, ifr, cmd); ++} ++ ++/* Provide network statistics info for the interface */ ++static struct rtnl_link_stats64 *emac_get_stats64(struct net_device *netdev, ++ struct rtnl_link_stats64 *net_stats) ++{ ++ struct emac_adapter *adpt = netdev_priv(netdev); ++ unsigned int addr = REG_MAC_RX_STATUS_BIN; ++ struct emac_stats *stats = &adpt->stats; ++ u64 *stats_itr = &adpt->stats.rx_ok; ++ u32 val; ++ ++ spin_lock(&stats->lock); ++ ++ while (addr <= REG_MAC_RX_STATUS_END) { ++ val = readl_relaxed(adpt->base + addr); ++ *stats_itr += val; ++ stats_itr++; ++ addr += sizeof(u32); ++ } ++ ++ /* additional rx status */ ++ val = readl_relaxed(adpt->base + EMAC_RXMAC_STATC_REG23); ++ adpt->stats.rx_crc_align += val; ++ val = readl_relaxed(adpt->base + EMAC_RXMAC_STATC_REG24); ++ adpt->stats.rx_jabbers += val; ++ ++ /* update tx status */ ++ addr = REG_MAC_TX_STATUS_BIN; ++ stats_itr = &adpt->stats.tx_ok; ++ ++ while (addr <= REG_MAC_TX_STATUS_END) { ++ val = readl_relaxed(adpt->base + addr); ++ *stats_itr += val; ++ ++stats_itr; ++ addr += sizeof(u32); ++ } ++ ++ /* additional tx status */ ++ val = readl_relaxed(adpt->base + EMAC_TXMAC_STATC_REG25); ++ adpt->stats.tx_col += val; ++ ++ /* return parsed statistics */ ++ net_stats->rx_packets = stats->rx_ok; ++ net_stats->tx_packets = stats->tx_ok; ++ net_stats->rx_bytes = stats->rx_byte_cnt; ++ net_stats->tx_bytes = stats->tx_byte_cnt; ++ net_stats->multicast = stats->rx_mcast; ++ net_stats->collisions = stats->tx_1_col + stats->tx_2_col * 2 + ++ stats->tx_late_col + stats->tx_abort_col; ++ ++ net_stats->rx_errors = stats->rx_frag + stats->rx_fcs_err + ++ stats->rx_len_err + stats->rx_sz_ov + ++ stats->rx_align_err; ++ net_stats->rx_fifo_errors = stats->rx_rxf_ov; ++ net_stats->rx_length_errors = stats->rx_len_err; ++ net_stats->rx_crc_errors = stats->rx_fcs_err; ++ net_stats->rx_frame_errors = stats->rx_align_err; ++ net_stats->rx_over_errors = stats->rx_rxf_ov; ++ net_stats->rx_missed_errors = stats->rx_rxf_ov; ++ ++ net_stats->tx_errors = stats->tx_late_col + stats->tx_abort_col + ++ stats->tx_underrun + stats->tx_trunc; ++ net_stats->tx_fifo_errors = stats->tx_underrun; ++ net_stats->tx_aborted_errors = stats->tx_abort_col; ++ net_stats->tx_window_errors = stats->tx_late_col; ++ ++ spin_unlock(&stats->lock); ++ ++ return net_stats; ++} ++ ++static const struct net_device_ops emac_netdev_ops = { ++ .ndo_open = emac_open, ++ .ndo_stop = emac_close, ++ .ndo_validate_addr = eth_validate_addr, ++ .ndo_start_xmit = emac_start_xmit, ++ .ndo_set_mac_address = eth_mac_addr, ++ .ndo_change_mtu = emac_change_mtu, ++ .ndo_do_ioctl = emac_ioctl, ++ .ndo_tx_timeout = emac_tx_timeout, ++ .ndo_get_stats64 = emac_get_stats64, ++ .ndo_set_features = emac_set_features, ++ .ndo_set_rx_mode = emac_rx_mode_set, ++}; ++ ++/* Watchdog task routine, called to reinitialize the EMAC */ ++static void emac_work_thread(struct work_struct *work) ++{ ++ struct emac_adapter *adpt = ++ container_of(work, struct emac_adapter, work_thread); ++ ++ emac_reinit_locked(adpt); ++} ++ ++/* Initialize various data structures */ ++static void emac_init_adapter(struct emac_adapter *adpt) ++{ ++ u32 reg; ++ ++ /* descriptors */ ++ adpt->tx_desc_cnt = EMAC_DEF_TX_DESCS; ++ adpt->rx_desc_cnt = EMAC_DEF_RX_DESCS; ++ ++ /* dma */ ++ adpt->dma_order = emac_dma_ord_out; ++ adpt->dmar_block = emac_dma_req_4096; ++ adpt->dmaw_block = emac_dma_req_128; ++ adpt->dmar_dly_cnt = DMAR_DLY_CNT_DEF; ++ adpt->dmaw_dly_cnt = DMAW_DLY_CNT_DEF; ++ adpt->tpd_burst = TXQ0_NUM_TPD_PREF_DEF; ++ adpt->rfd_burst = RXQ0_NUM_RFD_PREF_DEF; ++ ++ /* irq moderator */ ++ reg = ((EMAC_DEF_RX_IRQ_MOD >> 1) << IRQ_MODERATOR2_INIT_SHFT) | ++ ((EMAC_DEF_TX_IRQ_MOD >> 1) << IRQ_MODERATOR_INIT_SHFT); ++ adpt->irq_mod = reg; ++ ++ /* others */ ++ adpt->preamble = EMAC_PREAMBLE_DEF; ++} ++ ++/* Get the clock */ ++static int emac_clks_get(struct platform_device *pdev, ++ struct emac_adapter *adpt) ++{ ++ unsigned int i; ++ ++ for (i = 0; i < EMAC_CLK_CNT; i++) { ++ struct clk *clk = devm_clk_get(&pdev->dev, emac_clk_name[i]); ++ ++ if (IS_ERR(clk)) { ++ dev_err(&pdev->dev, ++ "could not claim clock %s (error=%li)\n", ++ emac_clk_name[i], PTR_ERR(clk)); ++ ++ return PTR_ERR(clk); ++ } ++ ++ adpt->clk[i] = clk; ++ } ++ ++ return 0; ++} ++ ++/* Initialize clocks */ ++static int emac_clks_phase1_init(struct platform_device *pdev, ++ struct emac_adapter *adpt) ++{ ++ int ret; ++ ++ ret = emac_clks_get(pdev, adpt); ++ if (ret) ++ return ret; ++ ++ ret = clk_prepare_enable(adpt->clk[EMAC_CLK_AXI]); ++ if (ret) ++ return ret; ++ ++ ret = clk_prepare_enable(adpt->clk[EMAC_CLK_CFG_AHB]); ++ if (ret) ++ return ret; ++ ++ ret = clk_set_rate(adpt->clk[EMAC_CLK_HIGH_SPEED], 19200000); ++ if (ret) ++ return ret; ++ ++ return clk_prepare_enable(adpt->clk[EMAC_CLK_HIGH_SPEED]); ++} ++ ++/* Enable clocks; needs emac_clks_phase1_init to be called before */ ++static int emac_clks_phase2_init(struct platform_device *pdev, ++ struct emac_adapter *adpt) ++{ ++ int ret; ++ ++ ret = clk_set_rate(adpt->clk[EMAC_CLK_TX], 125000000); ++ if (ret) ++ return ret; ++ ++ ret = clk_prepare_enable(adpt->clk[EMAC_CLK_TX]); ++ if (ret) ++ return ret; ++ ++ ret = clk_set_rate(adpt->clk[EMAC_CLK_HIGH_SPEED], 125000000); ++ if (ret) ++ return ret; ++ ++ ret = clk_set_rate(adpt->clk[EMAC_CLK_MDIO], 25000000); ++ if (ret) ++ return ret; ++ ++ ret = clk_prepare_enable(adpt->clk[EMAC_CLK_MDIO]); ++ if (ret) ++ return ret; ++ ++ ret = clk_prepare_enable(adpt->clk[EMAC_CLK_RX]); ++ if (ret) ++ return ret; ++ ++ return clk_prepare_enable(adpt->clk[EMAC_CLK_SYS]); ++} ++ ++static void emac_clks_teardown(struct emac_adapter *adpt) ++{ ++ ++ unsigned int i; ++ ++ for (i = 0; i < EMAC_CLK_CNT; i++) ++ clk_disable_unprepare(adpt->clk[i]); ++} ++ ++/* Get the resources */ ++static int emac_probe_resources(struct platform_device *pdev, ++ struct emac_adapter *adpt) ++{ ++ struct device_node *node = pdev->dev.of_node; ++ struct net_device *netdev = adpt->netdev; ++ struct resource *res; ++ const void *maddr; ++ int ret = 0; ++ ++ /* get mac address */ ++ maddr = of_get_mac_address(node); ++ if (!maddr) ++ eth_hw_addr_random(netdev); ++ else ++ ether_addr_copy(netdev->dev_addr, maddr); ++ ++ /* Core 0 interrupt */ ++ ret = platform_get_irq(pdev, 0); ++ if (ret < 0) { ++ dev_err(&pdev->dev, ++ "error: missing core0 irq resource (error=%i)\n", ret); ++ return ret; ++ } ++ adpt->irq.irq = ret; ++ ++ /* base register address */ ++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); ++ adpt->base = devm_ioremap_resource(&pdev->dev, res); ++ if (IS_ERR(adpt->base)) ++ return PTR_ERR(adpt->base); ++ ++ /* CSR register address */ ++ res = platform_get_resource(pdev, IORESOURCE_MEM, 1); ++ adpt->csr = devm_ioremap_resource(&pdev->dev, res); ++ if (IS_ERR(adpt->csr)) ++ return PTR_ERR(adpt->csr); ++ ++ netdev->base_addr = (unsigned long)adpt->base; ++ ++ return 0; ++} ++ ++static const struct of_device_id emac_dt_match[] = { ++ { ++ .compatible = "qcom,fsm9900-emac", ++ }, ++ {} ++}; ++ ++static int emac_probe(struct platform_device *pdev) ++{ ++ struct net_device *netdev; ++ struct emac_adapter *adpt; ++ struct emac_phy *phy; ++ u16 devid, revid; ++ u32 reg; ++ int ret; ++ ++ /* The EMAC itself is capable of 64-bit DMA, so try that first. */ ++ ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); ++ if (ret) { ++ /* Some platforms may restrict the EMAC's address bus to less ++ * then the size of DDR. In this case, we need to try a ++ * smaller mask. We could try every possible smaller mask, ++ * but that's overkill. Instead, just fall to 32-bit, which ++ * should always work. ++ */ ++ ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); ++ if (ret) { ++ dev_err(&pdev->dev, "could not set DMA mask\n"); ++ return ret; ++ } ++ } ++ ++ netdev = alloc_etherdev(sizeof(struct emac_adapter)); ++ if (!netdev) ++ return -ENOMEM; ++ ++ dev_set_drvdata(&pdev->dev, netdev); ++ SET_NETDEV_DEV(netdev, &pdev->dev); ++ ++ adpt = netdev_priv(netdev); ++ adpt->netdev = netdev; ++ adpt->msg_enable = EMAC_MSG_DEFAULT; ++ ++ phy = &adpt->phy; ++ ++ mutex_init(&adpt->reset_lock); ++ spin_lock_init(&adpt->stats.lock); ++ ++ adpt->irq.mask = RX_PKT_INT0 | IMR_NORMAL_MASK; ++ ++ ret = emac_probe_resources(pdev, adpt); ++ if (ret) ++ goto err_undo_netdev; ++ ++ /* initialize clocks */ ++ ret = emac_clks_phase1_init(pdev, adpt); ++ if (ret) { ++ dev_err(&pdev->dev, "could not initialize clocks\n"); ++ goto err_undo_netdev; ++ } ++ ++ netdev->watchdog_timeo = EMAC_WATCHDOG_TIME; ++ netdev->irq = adpt->irq.irq; ++ ++ adpt->rrd_size = EMAC_RRD_SIZE; ++ adpt->tpd_size = EMAC_TPD_SIZE; ++ adpt->rfd_size = EMAC_RFD_SIZE; ++ ++ netdev->netdev_ops = &emac_netdev_ops; ++ ++ emac_init_adapter(adpt); ++ ++ /* init external phy */ ++ ret = emac_phy_config(pdev, adpt); ++ if (ret) ++ goto err_undo_clocks; ++ ++ /* init internal sgmii phy */ ++ ret = emac_sgmii_config(pdev, adpt); ++ if (ret) ++ goto err_undo_mdiobus; ++ ++ /* enable clocks */ ++ ret = emac_clks_phase2_init(pdev, adpt); ++ if (ret) { ++ dev_err(&pdev->dev, "could not initialize clocks\n"); ++ goto err_undo_mdiobus; ++ } ++ ++ emac_mac_reset(adpt); ++ ++ /* set hw features */ ++ netdev->features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_RXCSUM | ++ NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_HW_VLAN_CTAG_RX | ++ NETIF_F_HW_VLAN_CTAG_TX; ++ netdev->hw_features = netdev->features; ++ ++ netdev->vlan_features |= NETIF_F_SG | NETIF_F_HW_CSUM | ++ NETIF_F_TSO | NETIF_F_TSO6; ++ ++ INIT_WORK(&adpt->work_thread, emac_work_thread); ++ ++ /* Initialize queues */ ++ emac_mac_rx_tx_ring_init_all(pdev, adpt); ++ ++ netif_napi_add(netdev, &adpt->rx_q.napi, emac_napi_rtx, ++ NAPI_POLL_WEIGHT); ++ ++ ret = register_netdev(netdev); ++ if (ret) { ++ dev_err(&pdev->dev, "could not register net device\n"); ++ goto err_undo_napi; ++ } ++ ++ reg = readl_relaxed(adpt->base + EMAC_DMA_MAS_CTRL); ++ devid = (reg & DEV_ID_NUM_BMSK) >> DEV_ID_NUM_SHFT; ++ revid = (reg & DEV_REV_NUM_BMSK) >> DEV_REV_NUM_SHFT; ++ reg = readl_relaxed(adpt->base + EMAC_CORE_HW_VERSION); ++ ++ netif_info(adpt, probe, netdev, ++ "hardware id %d.%d, hardware version %d.%d.%d\n", ++ devid, revid, ++ (reg & MAJOR_BMSK) >> MAJOR_SHFT, ++ (reg & MINOR_BMSK) >> MINOR_SHFT, ++ (reg & STEP_BMSK) >> STEP_SHFT); ++ ++ return 0; ++ ++err_undo_napi: ++ netif_napi_del(&adpt->rx_q.napi); ++err_undo_mdiobus: ++ mdiobus_unregister(adpt->mii_bus); ++err_undo_clocks: ++ emac_clks_teardown(adpt); ++err_undo_netdev: ++ free_netdev(netdev); ++ ++ return ret; ++} ++ ++static int emac_remove(struct platform_device *pdev) ++{ ++ struct net_device *netdev = dev_get_drvdata(&pdev->dev); ++ struct emac_adapter *adpt = netdev_priv(netdev); ++ ++ unregister_netdev(netdev); ++ netif_napi_del(&adpt->rx_q.napi); ++ ++ emac_clks_teardown(adpt); ++ ++ mdiobus_unregister(adpt->mii_bus); ++ free_netdev(netdev); ++ dev_set_drvdata(&pdev->dev, NULL); ++ ++ return 0; ++} ++ ++static struct platform_driver emac_platform_driver = { ++ .probe = emac_probe, ++ .remove = emac_remove, ++ .driver = { ++ .owner = THIS_MODULE, ++ .name = "qcom-emac", ++ .of_match_table = emac_dt_match, ++ }, ++}; ++ ++module_platform_driver(emac_platform_driver); ++ ++MODULE_LICENSE("GPL v2"); ++MODULE_ALIAS("platform:qcom-emac"); +diff --git a/drivers/net/ethernet/qualcomm/emac/emac.h b/drivers/net/ethernet/qualcomm/emac/emac.h +new file mode 100644 +index 0000000..0c76e6c +--- /dev/null ++++ b/drivers/net/ethernet/qualcomm/emac/emac.h +@@ -0,0 +1,335 @@ ++/* Copyright (c) 2013-2016, The Linux Foundation. All rights reserved. ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 and ++ * only version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++#ifndef _EMAC_H_ ++#define _EMAC_H_ ++ ++#include <linux/irqreturn.h> ++#include <linux/netdevice.h> ++#include <linux/clk.h> ++#include <linux/platform_device.h> ++#include "emac-mac.h" ++#include "emac-phy.h" ++ ++/* EMAC base register offsets */ ++#define EMAC_DMA_MAS_CTRL 0x001400 ++#define EMAC_IRQ_MOD_TIM_INIT 0x001408 ++#define EMAC_BLK_IDLE_STS 0x00140c ++#define EMAC_PHY_LINK_DELAY 0x00141c ++#define EMAC_SYS_ALIV_CTRL 0x001434 ++#define EMAC_MAC_IPGIFG_CTRL 0x001484 ++#define EMAC_MAC_STA_ADDR0 0x001488 ++#define EMAC_MAC_STA_ADDR1 0x00148c ++#define EMAC_HASH_TAB_REG0 0x001490 ++#define EMAC_HASH_TAB_REG1 0x001494 ++#define EMAC_MAC_HALF_DPLX_CTRL 0x001498 ++#define EMAC_MAX_FRAM_LEN_CTRL 0x00149c ++#define EMAC_INT_STATUS 0x001600 ++#define EMAC_INT_MASK 0x001604 ++#define EMAC_RXMAC_STATC_REG0 0x001700 ++#define EMAC_RXMAC_STATC_REG22 0x001758 ++#define EMAC_TXMAC_STATC_REG0 0x001760 ++#define EMAC_TXMAC_STATC_REG24 0x0017c0 ++#define EMAC_CORE_HW_VERSION 0x001974 ++#define EMAC_IDT_TABLE0 0x001b00 ++#define EMAC_RXMAC_STATC_REG23 0x001bc8 ++#define EMAC_RXMAC_STATC_REG24 0x001bcc ++#define EMAC_TXMAC_STATC_REG25 0x001bd0 ++#define EMAC_INT1_MASK 0x001bf0 ++#define EMAC_INT1_STATUS 0x001bf4 ++#define EMAC_INT2_MASK 0x001bf8 ++#define EMAC_INT2_STATUS 0x001bfc ++#define EMAC_INT3_MASK 0x001c00 ++#define EMAC_INT3_STATUS 0x001c04 ++ ++/* EMAC_DMA_MAS_CTRL */ ++#define DEV_ID_NUM_BMSK 0x7f000000 ++#define DEV_ID_NUM_SHFT 24 ++#define DEV_REV_NUM_BMSK 0xff0000 ++#define DEV_REV_NUM_SHFT 16 ++#define INT_RD_CLR_EN 0x4000 ++#define IRQ_MODERATOR2_EN 0x800 ++#define IRQ_MODERATOR_EN 0x400 ++#define LPW_CLK_SEL 0x80 ++#define LPW_STATE 0x20 ++#define LPW_MODE 0x10 ++#define SOFT_RST 0x1 ++ ++/* EMAC_IRQ_MOD_TIM_INIT */ ++#define IRQ_MODERATOR2_INIT_BMSK 0xffff0000 ++#define IRQ_MODERATOR2_INIT_SHFT 16 ++#define IRQ_MODERATOR_INIT_BMSK 0xffff ++#define IRQ_MODERATOR_INIT_SHFT 0 ++ ++/* EMAC_INT_STATUS */ ++#define DIS_INT BIT(31) ++#define PTP_INT BIT(30) ++#define RFD4_UR_INT BIT(29) ++#define TX_PKT_INT3 BIT(26) ++#define TX_PKT_INT2 BIT(25) ++#define TX_PKT_INT1 BIT(24) ++#define RX_PKT_INT3 BIT(19) ++#define RX_PKT_INT2 BIT(18) ++#define RX_PKT_INT1 BIT(17) ++#define RX_PKT_INT0 BIT(16) ++#define TX_PKT_INT BIT(15) ++#define TXQ_TO_INT BIT(14) ++#define GPHY_WAKEUP_INT BIT(13) ++#define GPHY_LINK_DOWN_INT BIT(12) ++#define GPHY_LINK_UP_INT BIT(11) ++#define DMAW_TO_INT BIT(10) ++#define DMAR_TO_INT BIT(9) ++#define TXF_UR_INT BIT(8) ++#define RFD3_UR_INT BIT(7) ++#define RFD2_UR_INT BIT(6) ++#define RFD1_UR_INT BIT(5) ++#define RFD0_UR_INT BIT(4) ++#define RXF_OF_INT BIT(3) ++#define SW_MAN_INT BIT(2) ++ ++/* EMAC_MAILBOX_6 */ ++#define RFD2_PROC_IDX_BMSK 0xfff0000 ++#define RFD2_PROC_IDX_SHFT 16 ++#define RFD2_PROD_IDX_BMSK 0xfff ++#define RFD2_PROD_IDX_SHFT 0 ++ ++/* EMAC_CORE_HW_VERSION */ ++#define MAJOR_BMSK 0xf0000000 ++#define MAJOR_SHFT 28 ++#define MINOR_BMSK 0xfff0000 ++#define MINOR_SHFT 16 ++#define STEP_BMSK 0xffff ++#define STEP_SHFT 0 ++ ++/* EMAC_EMAC_WRAPPER_CSR1 */ ++#define TX_INDX_FIFO_SYNC_RST BIT(23) ++#define TX_TS_FIFO_SYNC_RST BIT(22) ++#define RX_TS_FIFO2_SYNC_RST BIT(21) ++#define RX_TS_FIFO1_SYNC_RST BIT(20) ++#define TX_TS_ENABLE BIT(16) ++#define DIS_1588_CLKS BIT(11) ++#define FREQ_MODE BIT(9) ++#define ENABLE_RRD_TIMESTAMP BIT(3) ++ ++/* EMAC_EMAC_WRAPPER_CSR2 */ ++#define HDRIVE_BMSK 0x3000 ++#define HDRIVE_SHFT 12 ++#define SLB_EN BIT(9) ++#define PLB_EN BIT(8) ++#define WOL_EN BIT(3) ++#define PHY_RESET BIT(0) ++ ++#define EMAC_DEV_ID 0x0040 ++ ++/* SGMII v2 per lane registers */ ++#define SGMII_LN_RSM_START 0x029C ++ ++/* SGMII v2 PHY common registers */ ++#define SGMII_PHY_CMN_CTRL 0x0408 ++#define SGMII_PHY_CMN_RESET_CTRL 0x0410 ++ ++/* SGMII v2 PHY registers per lane */ ++#define SGMII_PHY_LN_OFFSET 0x0400 ++#define SGMII_PHY_LN_LANE_STATUS 0x00DC ++#define SGMII_PHY_LN_BIST_GEN0 0x008C ++#define SGMII_PHY_LN_BIST_GEN1 0x0090 ++#define SGMII_PHY_LN_BIST_GEN2 0x0094 ++#define SGMII_PHY_LN_BIST_GEN3 0x0098 ++#define SGMII_PHY_LN_CDR_CTRL1 0x005C ++ ++enum emac_clk_id { ++ EMAC_CLK_AXI, ++ EMAC_CLK_CFG_AHB, ++ EMAC_CLK_HIGH_SPEED, ++ EMAC_CLK_MDIO, ++ EMAC_CLK_TX, ++ EMAC_CLK_RX, ++ EMAC_CLK_SYS, ++ EMAC_CLK_CNT ++}; ++ ++#define EMAC_LINK_SPEED_UNKNOWN 0x0 ++#define EMAC_LINK_SPEED_10_HALF BIT(0) ++#define EMAC_LINK_SPEED_10_FULL BIT(1) ++#define EMAC_LINK_SPEED_100_HALF BIT(2) ++#define EMAC_LINK_SPEED_100_FULL BIT(3) ++#define EMAC_LINK_SPEED_1GB_FULL BIT(5) ++ ++#define EMAC_MAX_SETUP_LNK_CYCLE 100 ++ ++/* Wake On Lan */ ++#define EMAC_WOL_PHY 0x00000001 /* PHY Status Change */ ++#define EMAC_WOL_MAGIC 0x00000002 /* Magic Packet */ ++ ++struct emac_stats { ++ /* rx */ ++ u64 rx_ok; /* good packets */ ++ u64 rx_bcast; /* good broadcast packets */ ++ u64 rx_mcast; /* good multicast packets */ ++ u64 rx_pause; /* pause packet */ ++ u64 rx_ctrl; /* control packets other than pause frame. */ ++ u64 rx_fcs_err; /* packets with bad FCS. */ ++ u64 rx_len_err; /* packets with length mismatch */ ++ u64 rx_byte_cnt; /* good bytes count (without FCS) */ ++ u64 rx_runt; /* runt packets */ ++ u64 rx_frag; /* fragment count */ ++ u64 rx_sz_64; /* packets that are 64 bytes */ ++ u64 rx_sz_65_127; /* packets that are 65-127 bytes */ ++ u64 rx_sz_128_255; /* packets that are 128-255 bytes */ ++ u64 rx_sz_256_511; /* packets that are 256-511 bytes */ ++ u64 rx_sz_512_1023; /* packets that are 512-1023 bytes */ ++ u64 rx_sz_1024_1518; /* packets that are 1024-1518 bytes */ ++ u64 rx_sz_1519_max; /* packets that are 1519-MTU bytes*/ ++ u64 rx_sz_ov; /* packets that are >MTU bytes (truncated) */ ++ u64 rx_rxf_ov; /* packets dropped due to RX FIFO overflow */ ++ u64 rx_align_err; /* alignment errors */ ++ u64 rx_bcast_byte_cnt; /* broadcast packets byte count (without FCS) */ ++ u64 rx_mcast_byte_cnt; /* multicast packets byte count (without FCS) */ ++ u64 rx_err_addr; /* packets dropped due to address filtering */ ++ u64 rx_crc_align; /* CRC align errors */ ++ u64 rx_jabbers; /* jabbers */ ++ ++ /* tx */ ++ u64 tx_ok; /* good packets */ ++ u64 tx_bcast; /* good broadcast packets */ ++ u64 tx_mcast; /* good multicast packets */ ++ u64 tx_pause; /* pause packets */ ++ u64 tx_exc_defer; /* packets with excessive deferral */ ++ u64 tx_ctrl; /* control packets other than pause frame */ ++ u64 tx_defer; /* packets that are deferred. */ ++ u64 tx_byte_cnt; /* good bytes count (without FCS) */ ++ u64 tx_sz_64; /* packets that are 64 bytes */ ++ u64 tx_sz_65_127; /* packets that are 65-127 bytes */ ++ u64 tx_sz_128_255; /* packets that are 128-255 bytes */ ++ u64 tx_sz_256_511; /* packets that are 256-511 bytes */ ++ u64 tx_sz_512_1023; /* packets that are 512-1023 bytes */ ++ u64 tx_sz_1024_1518; /* packets that are 1024-1518 bytes */ ++ u64 tx_sz_1519_max; /* packets that are 1519-MTU bytes */ ++ u64 tx_1_col; /* packets single prior collision */ ++ u64 tx_2_col; /* packets with multiple prior collisions */ ++ u64 tx_late_col; /* packets with late collisions */ ++ u64 tx_abort_col; /* packets aborted due to excess collisions */ ++ u64 tx_underrun; /* packets aborted due to FIFO underrun */ ++ u64 tx_rd_eop; /* count of reads beyond EOP */ ++ u64 tx_len_err; /* packets with length mismatch */ ++ u64 tx_trunc; /* packets truncated due to size >MTU */ ++ u64 tx_bcast_byte; /* broadcast packets byte count (without FCS) */ ++ u64 tx_mcast_byte; /* multicast packets byte count (without FCS) */ ++ u64 tx_col; /* collisions */ ++ ++ spinlock_t lock; /* prevent multiple simultaneous readers */ ++}; ++ ++/* RSS hstype Definitions */ ++#define EMAC_RSS_HSTYP_IPV4_EN 0x00000001 ++#define EMAC_RSS_HSTYP_TCP4_EN 0x00000002 ++#define EMAC_RSS_HSTYP_IPV6_EN 0x00000004 ++#define EMAC_RSS_HSTYP_TCP6_EN 0x00000008 ++#define EMAC_RSS_HSTYP_ALL_EN (\ ++ EMAC_RSS_HSTYP_IPV4_EN |\ ++ EMAC_RSS_HSTYP_TCP4_EN |\ ++ EMAC_RSS_HSTYP_IPV6_EN |\ ++ EMAC_RSS_HSTYP_TCP6_EN) ++ ++#define EMAC_VLAN_TO_TAG(_vlan, _tag) \ ++ (_tag = ((((_vlan) >> 8) & 0xFF) | (((_vlan) & 0xFF) << 8))) ++ ++#define EMAC_TAG_TO_VLAN(_tag, _vlan) \ ++ (_vlan = ((((_tag) >> 8) & 0xFF) | (((_tag) & 0xFF) << 8))) ++ ++#define EMAC_DEF_RX_BUF_SIZE 1536 ++#define EMAC_MAX_JUMBO_PKT_SIZE (9 * 1024) ++#define EMAC_MAX_TX_OFFLOAD_THRESH (9 * 1024) ++ ++#define EMAC_MAX_ETH_FRAME_SIZE EMAC_MAX_JUMBO_PKT_SIZE ++#define EMAC_MIN_ETH_FRAME_SIZE 68 ++ ++#define EMAC_DEF_TX_QUEUES 1 ++#define EMAC_DEF_RX_QUEUES 1 ++ ++#define EMAC_MIN_TX_DESCS 128 ++#define EMAC_MIN_RX_DESCS 128 ++ ++#define EMAC_MAX_TX_DESCS 16383 ++#define EMAC_MAX_RX_DESCS 2047 ++ ++#define EMAC_DEF_TX_DESCS 512 ++#define EMAC_DEF_RX_DESCS 256 ++ ++#define EMAC_DEF_RX_IRQ_MOD 250 ++#define EMAC_DEF_TX_IRQ_MOD 250 ++ ++#define EMAC_WATCHDOG_TIME (5 * HZ) ++ ++/* by default check link every 4 seconds */ ++#define EMAC_TRY_LINK_TIMEOUT (4 * HZ) ++ ++/* emac_irq per-device (per-adapter) irq properties. ++ * @irq: irq number. ++ * @mask mask to use over status register. ++ */ ++struct emac_irq { ++ unsigned int irq; ++ u32 mask; ++}; ++ ++/* The device's main data structure */ ++struct emac_adapter { ++ struct net_device *netdev; ++ struct mii_bus *mii_bus; ++ struct phy_device *phydev; ++ ++ void __iomem *base; ++ void __iomem *csr; ++ ++ struct emac_phy phy; ++ struct emac_stats stats; ++ ++ struct emac_irq irq; ++ struct clk *clk[EMAC_CLK_CNT]; ++ ++ /* All Descriptor memory */ ++ struct emac_ring_header ring_header; ++ struct emac_tx_queue tx_q; ++ struct emac_rx_queue rx_q; ++ unsigned int tx_desc_cnt; ++ unsigned int rx_desc_cnt; ++ unsigned int rrd_size; /* in quad words */ ++ unsigned int rfd_size; /* in quad words */ ++ unsigned int tpd_size; /* in quad words */ ++ ++ unsigned int rxbuf_size; ++ ++ /* Ring parameter */ ++ u8 tpd_burst; ++ u8 rfd_burst; ++ unsigned int dmaw_dly_cnt; ++ unsigned int dmar_dly_cnt; ++ enum emac_dma_req_block dmar_block; ++ enum emac_dma_req_block dmaw_block; ++ enum emac_dma_order dma_order; ++ ++ u32 irq_mod; ++ u32 preamble; ++ ++ struct work_struct work_thread; ++ ++ u16 msg_enable; ++ ++ struct mutex reset_lock; ++}; ++ ++int emac_reinit_locked(struct emac_adapter *adpt); ++void emac_reg_update32(void __iomem *addr, u32 mask, u32 val); ++irqreturn_t emac_isr(int irq, void *data); ++ ++#endif /* _EMAC_H_ */ +-- +Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm +Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora +Forum, a Linux Foundation Collaborative Project. + + +From 3f10d9127d616e07403dfee21b218fa065aa247a Mon Sep 17 00:00:00 2001 +From: Wei Yongjun <weiyongjun1 at huawei.com> +Date: Thu, 15 Sep 2016 02:25:52 +0000 +Subject: [PATCH 02/17] net: emac: remove unnecessary dev_set_drvdata() + +The driver core clears the driver data to NULL after device_release +or on probe failure. Thus, it is not needed to manually clear the +device driver data to NULL. + +Signed-off-by: Wei Yongjun <weiyongjun1 at huawei.com> +Signed-off-by: David S. Miller <davem at davemloft.net> +(cherry picked from commit 7e5eded5c189abaea77556da41af1195af841b0a) +--- + drivers/net/ethernet/qualcomm/emac/emac.c | 1 - + 1 file changed, 1 deletion(-) + +diff --git a/drivers/net/ethernet/qualcomm/emac/emac.c b/drivers/net/ethernet/qualcomm/emac/emac.c +index 56e0a9f..42d2d23 100644 +--- a/drivers/net/ethernet/qualcomm/emac/emac.c ++++ b/drivers/net/ethernet/qualcomm/emac/emac.c +@@ -722,7 +722,6 @@ static int emac_remove(struct platform_device *pdev) + + mdiobus_unregister(adpt->mii_bus); + free_netdev(netdev); +- dev_set_drvdata(&pdev->dev, NULL); + + return 0; + } +-- +Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm +Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora +Forum, a Linux Foundation Collaborative Project. + + +From 47f8484bebe3724f24e20d13428029c4fba60dbb Mon Sep 17 00:00:00 2001 +From: Wei Yongjun <weiyongjun1 at huawei.com> +Date: Thu, 15 Sep 2016 02:26:10 +0000 +Subject: [PATCH 03/17] net: emac: remove .owner field for driver + +Remove .owner field if calls are used which set it automatically. + +Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci + +Signed-off-by: Wei Yongjun <weiyongjun1 at huawei.com> +Signed-off-by: David S. Miller <davem at davemloft.net> +(cherry picked from commit 1d7b47a3c78e0b5391a18246f9637752a4565e5b) +--- + drivers/net/ethernet/qualcomm/emac/emac.c | 1 - + 1 file changed, 1 deletion(-) + +diff --git a/drivers/net/ethernet/qualcomm/emac/emac.c b/drivers/net/ethernet/qualcomm/emac/emac.c +index 42d2d23..e47d387 100644 +--- a/drivers/net/ethernet/qualcomm/emac/emac.c ++++ b/drivers/net/ethernet/qualcomm/emac/emac.c +@@ -730,7 +730,6 @@ static struct platform_driver emac_platform_driver = { + .probe = emac_probe, + .remove = emac_remove, + .driver = { +- .owner = THIS_MODULE, + .name = "qcom-emac", + .of_match_table = emac_dt_match, + }, +-- +Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm +Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora +Forum, a Linux Foundation Collaborative Project. + + +From 5b0e60e3ddf0584b4cc6aacea9b08067e66866f9 Mon Sep 17 00:00:00 2001 +From: Timur Tabi <timur at codeaurora.org> +Date: Wed, 28 Sep 2016 11:58:42 -0500 +Subject: [PATCH 04/17] net: qcom/emac: do not use devm on internal phy pdev + +The platform_device returned by of_find_device_by_node() is not +automatically released when the driver unprobes. Therefore, +managed calls like devm_ioremap_resource() should not be used. +Instead, we manually allocate the resources and then free them +on driver release. + +Signed-off-by: Timur Tabi <timur at codeaurora.org> +Signed-off-by: David S. Miller <davem at davemloft.net> +(cherry picked from commit 54e19bc74f3380d414681762ceed9f7245bc6a6e) +--- + drivers/net/ethernet/qualcomm/emac/emac-sgmii.c | 42 +++++++++++++++++++------ + drivers/net/ethernet/qualcomm/emac/emac.c | 4 +++ + 2 files changed, 37 insertions(+), 9 deletions(-) + +diff --git a/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c b/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c +index 6ab0a3c..ad0e420 100644 +--- a/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c ++++ b/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c +@@ -681,6 +681,7 @@ int emac_sgmii_config(struct platform_device *pdev, struct emac_adapter *adpt) + struct resource *res; + const struct of_device_id *match; + struct device_node *np; ++ int ret; + + np = of_parse_phandle(pdev->dev.of_node, "internal-phy", 0); + if (!np) { +@@ -697,25 +698,48 @@ int emac_sgmii_config(struct platform_device *pdev, struct emac_adapter *adpt) + match = of_match_device(emac_sgmii_dt_match, &sgmii_pdev->dev); + if (!match) { + dev_err(&pdev->dev, "unrecognized internal phy node\n"); +- return -ENODEV; ++ ret = -ENODEV; ++ goto error_put_device; + } + + phy->initialize = (emac_sgmii_initialize)match->data; + + /* Base address is the first address */ + res = platform_get_resource(sgmii_pdev, IORESOURCE_MEM, 0); +- phy->base = devm_ioremap_resource(&sgmii_pdev->dev, res); +- if (IS_ERR(phy->base)) +- return PTR_ERR(phy->base); ++ phy->base = ioremap(res->start, resource_size(res)); ++ if (IS_ERR(phy->base)) { ++ ret = PTR_ERR(phy->base); ++ goto error_put_device; ++ } + + /* v2 SGMII has a per-lane digital digital, so parse it if it exists */ + res = platform_get_resource(sgmii_pdev, IORESOURCE_MEM, 1); + if (res) { +- phy->digital = devm_ioremap_resource(&sgmii_pdev->dev, res); +- if (IS_ERR(phy->base)) +- return PTR_ERR(phy->base); +- ++ phy->digital = ioremap(res->start, resource_size(res)); ++ if (IS_ERR(phy->digital)) { ++ ret = PTR_ERR(phy->digital); ++ goto error_unmap_base; ++ } + } + +- return phy->initialize(adpt); ++ ret = phy->initialize(adpt); ++ if (ret) ++ goto error; ++ ++ /* We've remapped the addresses, so we don't need the device any ++ * more. of_find_device_by_node() says we should release it. ++ */ ++ put_device(&sgmii_pdev->dev); ++ ++ return 0; ++ ++error: ++ if (phy->digital) ++ iounmap(phy->digital); ++error_unmap_base: ++ iounmap(phy->base); ++error_put_device: ++ put_device(&sgmii_pdev->dev); ++ ++ return ret; + } +diff --git a/drivers/net/ethernet/qualcomm/emac/emac.c b/drivers/net/ethernet/qualcomm/emac/emac.c +index e47d387..429b4cb 100644 +--- a/drivers/net/ethernet/qualcomm/emac/emac.c ++++ b/drivers/net/ethernet/qualcomm/emac/emac.c +@@ -723,6 +723,10 @@ static int emac_remove(struct platform_device *pdev) + mdiobus_unregister(adpt->mii_bus); + free_netdev(netdev); + ++ if (adpt->phy.digital) ++ iounmap(adpt->phy.digital); ++ iounmap(adpt->phy.base); ++ + return 0; + } + +-- +Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm +Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora +Forum, a Linux Foundation Collaborative Project. + + +From 960704db65564fafaccf0fdf98147f7bef86c56d Mon Sep 17 00:00:00 2001 +From: Timur Tabi <timur at codeaurora.org> +Date: Wed, 28 Sep 2016 11:58:43 -0500 +Subject: [PATCH 05/17] net: qcom/emac: use device_get_mac_address + +Replace the DT-specific of_get_mac_address() function with +device_get_mac_address, which works on both DT and ACPI platforms. This +change makes it easier to add ACPI support. + +Signed-off-by: Timur Tabi <timur at codeaurora.org> +Signed-off-by: David S. Miller <davem at davemloft.net> +(cherry picked from commit 0de709acbc0d0001dc4b0953aebcfb0f030b9b0e) +--- + drivers/net/ethernet/qualcomm/emac/emac.c | 10 ++++------ + 1 file changed, 4 insertions(+), 6 deletions(-) + +diff --git a/drivers/net/ethernet/qualcomm/emac/emac.c b/drivers/net/ethernet/qualcomm/emac/emac.c +index 429b4cb..551df1c 100644 +--- a/drivers/net/ethernet/qualcomm/emac/emac.c ++++ b/drivers/net/ethernet/qualcomm/emac/emac.c +@@ -531,18 +531,16 @@ static void emac_clks_teardown(struct emac_adapter *adpt) + static int emac_probe_resources(struct platform_device *pdev, + struct emac_adapter *adpt) + { +- struct device_node *node = pdev->dev.of_node; + struct net_device *netdev = adpt->netdev; + struct resource *res; +- const void *maddr; ++ char maddr[ETH_ALEN]; + int ret = 0; + + /* get mac address */ +- maddr = of_get_mac_address(node); +- if (!maddr) +- eth_hw_addr_random(netdev); +- else ++ if (device_get_mac_address(&pdev->dev, maddr, ETH_ALEN)) + ether_addr_copy(netdev->dev_addr, maddr); ++ else ++ eth_hw_addr_random(netdev); + + /* Core 0 interrupt */ + ret = platform_get_irq(pdev, 0); +-- +Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm +Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora +Forum, a Linux Foundation Collaborative Project. + + +From ebc1a440fa4fefa3fe6bed50801e4fd8e61b0717 Mon Sep 17 00:00:00 2001 +From: Timur Tabi <timur at codeaurora.org> +Date: Wed, 28 Sep 2016 11:58:44 -0500 +Subject: [PATCH 06/17] net: qcom/emac: initial ACPI support + +Add support for reading addresses, interrupts, and _DSD properties +from ACPI tables, just like with device tree. The HID for the +EMAC device itself is QCOM8070. The internal PHY is represented +by a child node with a HID of QCOM8071. + +The EMAC also has some complex clock initialization requirements +that are not represented by this patch. This will be addressed +in a future patch. + +Signed-off-by: Timur Tabi <timur at codeaurora.org> +Signed-off-by: David S. Miller <davem at davemloft.net> +(cherry picked from commit 5f3d38078c84f7bc12739a3b79fc59797cf0262d) +--- + drivers/net/ethernet/qualcomm/emac/emac-phy.c | 37 ++++++++++--- + drivers/net/ethernet/qualcomm/emac/emac-sgmii.c | 72 ++++++++++++++++++------- + drivers/net/ethernet/qualcomm/emac/emac.c | 12 +++++ + 3 files changed, 95 insertions(+), 26 deletions(-) + +diff --git a/drivers/net/ethernet/qualcomm/emac/emac-phy.c b/drivers/net/ethernet/qualcomm/emac/emac-phy.c +index c412ba9..da4e90d 100644 +--- a/drivers/net/ethernet/qualcomm/emac/emac-phy.c ++++ b/drivers/net/ethernet/qualcomm/emac/emac-phy.c +@@ -19,6 +19,7 @@ + #include <linux/of_mdio.h> + #include <linux/phy.h> + #include <linux/iopoll.h> ++#include <linux/acpi.h> + #include "emac.h" + #include "emac-mac.h" + #include "emac-phy.h" +@@ -167,7 +168,6 @@ static int emac_mdio_write(struct mii_bus *bus, int addr, int regnum, u16 val) + int emac_phy_config(struct platform_device *pdev, struct emac_adapter *adpt) + { + struct device_node *np = pdev->dev.of_node; +- struct device_node *phy_np; + struct mii_bus *mii_bus; + int ret; + +@@ -183,14 +183,37 @@ int emac_phy_config(struct platform_device *pdev, struct emac_adapter *adpt) + mii_bus->parent = &pdev->dev; + mii_bus->priv = adpt; + +- ret = of_mdiobus_register(mii_bus, np); +- if (ret) { +- dev_err(&pdev->dev, "could not register mdio bus\n"); +- return ret; ++ if (has_acpi_companion(&pdev->dev)) { ++ u32 phy_addr; ++ ++ ret = mdiobus_register(mii_bus); ++ if (ret) { ++ dev_err(&pdev->dev, "could not register mdio bus\n"); ++ return ret; ++ } ++ ret = device_property_read_u32(&pdev->dev, "phy-channel", ++ &phy_addr); ++ if (ret) ++ /* If we can't read a valid phy address, then assume ++ * that there is only one phy on this mdio bus. ++ */ ++ adpt->phydev = phy_find_first(mii_bus); ++ else ++ adpt->phydev = mdiobus_get_phy(mii_bus, phy_addr); ++ ++ } else { ++ struct device_node *phy_np; ++ ++ ret = of_mdiobus_register(mii_bus, np); ++ if (ret) { ++ dev_err(&pdev->dev, "could not register mdio bus\n"); ++ return ret; ++ } ++ ++ phy_np = of_parse_phandle(np, "phy-handle", 0); ++ adpt->phydev = of_phy_find_device(phy_np); + } + +- phy_np = of_parse_phandle(np, "phy-handle", 0); +- adpt->phydev = of_phy_find_device(phy_np); + if (!adpt->phydev) { + dev_err(&pdev->dev, "could not find external phy\n"); + mdiobus_unregister(mii_bus); +diff --git a/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c b/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c +index ad0e420..3d2c05a 100644 +--- a/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c ++++ b/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c +@@ -14,6 +14,7 @@ + */ + + #include <linux/iopoll.h> ++#include <linux/acpi.h> + #include <linux/of_device.h> + #include "emac.h" + #include "emac-mac.h" +@@ -662,6 +663,24 @@ void emac_sgmii_reset(struct emac_adapter *adpt) + clk_set_rate(adpt->clk[EMAC_CLK_HIGH_SPEED], 125000000); + } + ++static int emac_sgmii_acpi_match(struct device *dev, void *data) ++{ ++ static const struct acpi_device_id match_table[] = { ++ { ++ .id = "QCOM8071", ++ .driver_data = (kernel_ulong_t)emac_sgmii_init_v2, ++ }, ++ {} ++ }; ++ const struct acpi_device_id *id = acpi_match_device(match_table, dev); ++ emac_sgmii_initialize *initialize = data; ++ ++ if (id) ++ *initialize = (emac_sgmii_initialize)id->driver_data; ++ ++ return !!id; ++} ++ + static const struct of_device_id emac_sgmii_dt_match[] = { + { + .compatible = "qcom,fsm9900-emac-sgmii", +@@ -679,30 +698,45 @@ int emac_sgmii_config(struct platform_device *pdev, struct emac_adapter *adpt) + struct platform_device *sgmii_pdev = NULL; + struct emac_phy *phy = &adpt->phy; + struct resource *res; +- const struct of_device_id *match; +- struct device_node *np; + int ret; + +- np = of_parse_phandle(pdev->dev.of_node, "internal-phy", 0); +- if (!np) { +- dev_err(&pdev->dev, "missing internal-phy property\n"); +- return -ENODEV; +- } ++ if (has_acpi_companion(&pdev->dev)) { ++ struct device *dev; + +- sgmii_pdev = of_find_device_by_node(np); +- if (!sgmii_pdev) { +- dev_err(&pdev->dev, "invalid internal-phy property\n"); +- return -ENODEV; +- } ++ dev = device_find_child(&pdev->dev, &phy->initialize, ++ emac_sgmii_acpi_match); + +- match = of_match_device(emac_sgmii_dt_match, &sgmii_pdev->dev); +- if (!match) { +- dev_err(&pdev->dev, "unrecognized internal phy node\n"); +- ret = -ENODEV; +- goto error_put_device; +- } ++ if (!dev) { ++ dev_err(&pdev->dev, "cannot find internal phy node\n"); ++ return -ENODEV; ++ } + +- phy->initialize = (emac_sgmii_initialize)match->data; ++ sgmii_pdev = to_platform_device(dev); ++ } else { ++ const struct of_device_id *match; ++ struct device_node *np; ++ ++ np = of_parse_phandle(pdev->dev.of_node, "internal-phy", 0); ++ if (!np) { ++ dev_err(&pdev->dev, "missing internal-phy property\n"); ++ return -ENODEV; ++ } ++ ++ sgmii_pdev = of_find_device_by_node(np); ++ if (!sgmii_pdev) { ++ dev_err(&pdev->dev, "invalid internal-phy property\n"); ++ return -ENODEV; ++ } ++ ++ match = of_match_device(emac_sgmii_dt_match, &sgmii_pdev->dev); ++ if (!match) { ++ dev_err(&pdev->dev, "unrecognized internal phy node\n"); ++ ret = -ENODEV; ++ goto error_put_device; ++ } ++ ++ phy->initialize = (emac_sgmii_initialize)match->data; ++ } + + /* Base address is the first address */ + res = platform_get_resource(sgmii_pdev, IORESOURCE_MEM, 0); +diff --git a/drivers/net/ethernet/qualcomm/emac/emac.c b/drivers/net/ethernet/qualcomm/emac/emac.c +index 551df1c..9bf3b2b 100644 +--- a/drivers/net/ethernet/qualcomm/emac/emac.c ++++ b/drivers/net/ethernet/qualcomm/emac/emac.c +@@ -22,6 +22,7 @@ + #include <linux/of_device.h> + #include <linux/phy.h> + #include <linux/platform_device.h> ++#include <linux/acpi.h> + #include "emac.h" + #include "emac-mac.h" + #include "emac-phy.h" +@@ -575,6 +576,16 @@ static const struct of_device_id emac_dt_match[] = { + {} + }; + ++#if IS_ENABLED(CONFIG_ACPI) ++static const struct acpi_device_id emac_acpi_match[] = { ++ { ++ .id = "QCOM8070", ++ }, ++ {} ++}; ++MODULE_DEVICE_TABLE(acpi, emac_acpi_match); ++#endif ++ + static int emac_probe(struct platform_device *pdev) + { + struct net_device *netdev; +@@ -734,6 +745,7 @@ static struct platform_driver emac_platform_driver = { + .driver = { + .name = "qcom-emac", + .of_match_table = emac_dt_match, ++ .acpi_match_table = ACPI_PTR(emac_acpi_match), + }, + }; + +-- +Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm +Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora +Forum, a Linux Foundation Collaborative Project. + + +From 70d19022105a6ed626e942d5f542293774555757 Mon Sep 17 00:00:00 2001 +From: Wei Yongjun <weiyongjun1 at huawei.com> +Date: Sat, 1 Oct 2016 09:12:29 +0000 +Subject: [PATCH 07/17] net: qcom/emac: fix return value check in + emac_sgmii_config() + +In case of error, the function ioremap() returns NULL pointer +not ERR_PTR(). The IS_ERR() test in the return value check +should be replaced with NULL test. + +Also add check for return value of platform_get_resource(). + +Fixes: 54e19bc74f33 ("net: qcom/emac: do not use devm on internal +phy pdev") +Signed-off-by: Wei Yongjun <weiyongjun1 at huawei.com> +Acked-by: Timur Tabi <timur at codeaurora.org> +Signed-off-by: David S. Miller <davem at davemloft.net> + +(cherry picked from commit 0fd7d43fbc4aaf358005231a6bed27eb1c2f60c3) +--- + drivers/net/ethernet/qualcomm/emac/emac-sgmii.c | 13 +++++++++---- + 1 file changed, 9 insertions(+), 4 deletions(-) + +diff --git a/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c b/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c +index 3d2c05a..75c1b53 100644 +--- a/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c ++++ b/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c +@@ -740,9 +740,14 @@ int emac_sgmii_config(struct platform_device *pdev, struct emac_adapter *adpt) + + /* Base address is the first address */ + res = platform_get_resource(sgmii_pdev, IORESOURCE_MEM, 0); ++ if (!res) { ++ ret = -EINVAL; ++ goto error_put_device; ++ } ++ + phy->base = ioremap(res->start, resource_size(res)); +- if (IS_ERR(phy->base)) { +- ret = PTR_ERR(phy->base); ++ if (!phy->base) { ++ ret = -ENOMEM; + goto error_put_device; + } + +@@ -750,8 +755,8 @@ int emac_sgmii_config(struct platform_device *pdev, struct emac_adapter *adpt) + res = platform_get_resource(sgmii_pdev, IORESOURCE_MEM, 1); + if (res) { + phy->digital = ioremap(res->start, resource_size(res)); +- if (IS_ERR(phy->digital)) { +- ret = PTR_ERR(phy->digital); ++ if (!phy->digital) { ++ ret = -ENOMEM; + goto error_unmap_base; + } + } +-- +Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm +Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora +Forum, a Linux Foundation Collaborative Project. + + +From 0b50446fca931002f3a1f3d9279185cefb413e43 Mon Sep 17 00:00:00 2001 +From: Geert Uytterhoeven <geert at linux-m68k.org> +Date: Thu, 6 Oct 2016 16:44:53 +0200 +Subject: [PATCH 08/17] ethernet: qualcomm: QCOM_EMAC should depend on HAS_DMA + and HAS_IOMEM +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +If NO_DMA=y: + + drivers/built-in.o: In function `emac_probe': + emac.c:(.text+0x3780b8): undefined reference to `bad_dma_ops' + emac.c:(.text+0x3780e2): undefined reference to `bad_dma_ops' + emac.c:(.text+0x378112): undefined reference to `bad_dma_ops' + emac.c:(.text+0x378146): undefined reference to `bad_dma_ops' + emac.c:(.text+0x37816e): undefined reference to `bad_dma_ops' + drivers/built-in.o:emac.c:(.text+0x37819a): more undefined references to `bad_dma_ops' follow + +If NO_IOMEM=y: + + drivers/net/ethernet/qualcomm/emac/emac.c: In function ‘emac_remove’: + drivers/net/ethernet/qualcomm/emac/emac.c:736:3: error: implicit declaration of function ‘iounmap’ [-Werror=implicit-function-declaration] + iounmap(adpt->phy.digital); + ^ + +Add dependencies on HAS_DMA and HAS_IOMEM to fix this. + +Signed-off-by: Geert Uytterhoeven <geert at linux-m68k.org> +Acked-by: Timur Tabi <timur at codeaurora.org> +Signed-off-by: David S. Miller <davem at davemloft.net> +(cherry picked from commit e5e0fbfc4e3b343ff985dd800f1ee31564793563) +--- + drivers/net/ethernet/qualcomm/Kconfig | 1 + + 1 file changed, 1 insertion(+) + +diff --git a/drivers/net/ethernet/qualcomm/Kconfig b/drivers/net/ethernet/qualcomm/Kconfig +index 9ba568d..d7720bf 100644 +--- a/drivers/net/ethernet/qualcomm/Kconfig ++++ b/drivers/net/ethernet/qualcomm/Kconfig +@@ -26,6 +26,7 @@ config QCA7000 + + config QCOM_EMAC + tristate "Qualcomm Technologies, Inc. EMAC Gigabit Ethernet support" ++ depends on HAS_DMA && HAS_IOMEM + select CRC32 + select PHYLIB + ---help--- +-- +Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm +Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora +Forum, a Linux Foundation Collaborative Project. + + +From b2b3ad120df7295ec3cf37b8a5253da40adbdfb7 Mon Sep 17 00:00:00 2001 +From: Timur Tabi <timur at codeaurora.org> +Date: Fri, 14 Oct 2016 14:14:35 -0500 +Subject: [PATCH 09/17] net: qcom/emac: disable interrupts before calling + phy_disconnect + +There is a race condition that can occur if EMAC interrupts are +enabled when phy_disconnect() is called. phy_disconnect() sets +adjust_link to NULL. When an interrupt occurs, the ISR might +call phy_mac_interrupt(), which wakes up the workqueue function +phy_state_machine(). This function might reference adjust_link, +thereby causing a null pointer exception. + +Signed-off-by: Timur Tabi <timur at codeaurora.org> +Signed-off-by: David S. Miller <davem at davemloft.net> +(cherry picked from commit 93966b715b32a783a1641f5a385901bbfab04733) +--- + drivers/net/ethernet/qualcomm/emac/emac-mac.c | 8 ++++++-- + 1 file changed, 6 insertions(+), 2 deletions(-) + +diff --git a/drivers/net/ethernet/qualcomm/emac/emac-mac.c b/drivers/net/ethernet/qualcomm/emac/emac-mac.c +index e97968e..6fb3bee 100644 +--- a/drivers/net/ethernet/qualcomm/emac/emac-mac.c ++++ b/drivers/net/ethernet/qualcomm/emac/emac-mac.c +@@ -1021,14 +1021,18 @@ void emac_mac_down(struct emac_adapter *adpt) + napi_disable(&adpt->rx_q.napi); + + phy_stop(adpt->phydev); +- phy_disconnect(adpt->phydev); + +- /* disable mac irq */ ++ /* Interrupts must be disabled before the PHY is disconnected, to ++ * avoid a race condition where adjust_link is null when we get ++ * an interrupt. ++ */ + writel(DIS_INT, adpt->base + EMAC_INT_STATUS); + writel(0, adpt->base + EMAC_INT_MASK); + synchronize_irq(adpt->irq.irq); + free_irq(adpt->irq.irq, &adpt->irq); + ++ phy_disconnect(adpt->phydev); ++ + emac_mac_reset(adpt); + + emac_tx_q_descs_free(adpt); +-- +Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm +Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora +Forum, a Linux Foundation Collaborative Project. + + +From 365117a7d1a658ccafcb739ba95deda8ce554638 Mon Sep 17 00:00:00 2001 +From: Javier Martinez Canillas <javier at osg.samsung.com> +Date: Mon, 17 Oct 2016 11:05:43 -0300 +Subject: [PATCH 10/17] net: qcom/emac: Fix module autoload for OF registration + +If the driver is built as a module, autoload won't work because the module +alias information is not filled. So user-space can't match the registered +device with the corresponding module. + +Export the module alias information using the MODULE_DEVICE_TABLE() macro. + +Before this patch: + +$ modinfo drivers/net/ethernet/qualcomm/emac/qcom-emac.ko | grep alias +alias: platform:qcom-emac + +After this patch: + +$ modinfo drivers/net/ethernet/qualcomm/emac/qcom-emac.ko | grep alias +alias: platform:qcom-emac +alias: of:N*T*Cqcom,fsm9900-emacC* +alias: of:N*T*Cqcom,fsm9900-emac + +Signed-off-by: Javier Martinez Canillas <javier at osg.samsung.com> +Acked-by: Timur Tabi <timur at codeaurora.org> +Signed-off-by: David S. Miller <davem at davemloft.net> +(cherry picked from commit 7097268509a7d6756d14ab422af7446f9bf53221) +--- + drivers/net/ethernet/qualcomm/emac/emac.c | 1 + + 1 file changed, 1 insertion(+) + +diff --git a/drivers/net/ethernet/qualcomm/emac/emac.c b/drivers/net/ethernet/qualcomm/emac/emac.c +index 9bf3b2b..4fede4b 100644 +--- a/drivers/net/ethernet/qualcomm/emac/emac.c ++++ b/drivers/net/ethernet/qualcomm/emac/emac.c +@@ -575,6 +575,7 @@ static const struct of_device_id emac_dt_match[] = { + }, + {} + }; ++MODULE_DEVICE_TABLE(of, emac_dt_match); + + #if IS_ENABLED(CONFIG_ACPI) + static const struct acpi_device_id emac_acpi_match[] = { +-- +Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm +Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora +Forum, a Linux Foundation Collaborative Project. + + +From 2f3f76b226b960952726968a05c2731bd8ee8805 Mon Sep 17 00:00:00 2001 +From: Timur Tabi <timur at codeaurora.org> +Date: Mon, 31 Oct 2016 18:18:42 -0500 +Subject: [PATCH 11/17] net: qcom/emac: use correct value for + SGMII_LN_UCDR_SO_GAIN_MODE0 + +The documentation says that SGMII_LN_UCDR_SO_GAIN_MODE0 should be +set to 0, not 6, on the Qualcomm Technologies QDF2432. + +Signed-off-by: Timur Tabi <timur at codeaurora.org> +Signed-off-by: David S. Miller <davem at davemloft.net> +(cherry picked from commit 7bb9f731d1026bd48b84cee7853cba7f5678193c) +--- + drivers/net/ethernet/qualcomm/emac/emac-sgmii.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c b/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c +index 75c1b53..72fe343 100644 +--- a/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c ++++ b/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c +@@ -421,7 +421,7 @@ static const struct emac_reg_write sgmii_v2_laned[] = { + /* CDR Settings */ + {EMAC_SGMII_LN_UCDR_FO_GAIN_MODE0, + UCDR_STEP_BY_TWO_MODE0 | UCDR_xO_GAIN_MODE(10)}, +- {EMAC_SGMII_LN_UCDR_SO_GAIN_MODE0, UCDR_xO_GAIN_MODE(6)}, ++ {EMAC_SGMII_LN_UCDR_SO_GAIN_MODE0, UCDR_xO_GAIN_MODE(0)}, + {EMAC_SGMII_LN_UCDR_SO_CONFIG, UCDR_ENABLE | UCDR_SO_SATURATION(12)}, + + /* TX/RX Settings */ +-- +Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm +Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora +Forum, a Linux Foundation Collaborative Project. + + +From 0d2e4c4b2403a876b7d3bae956221379d3b6bb53 Mon Sep 17 00:00:00 2001 +From: Timur Tabi <timur at codeaurora.org> +Date: Mon, 7 Nov 2016 10:51:40 -0600 +Subject: [PATCH 12/17] net: qcom/emac: configure the external phy to allow + pause frames + +Pause frames are used to enable flow control. A MAC can send and +receive pause frames in order to throttle traffic. However, the PHY +must be configured to allow those frames to pass through. + +Reviewed-by: Florian Fainelli <f.fainelli at gmail.com> +Signed-off-by: Timur Tabi <timur at codeaurora.org> +Signed-off-by: David S. Miller <davem at davemloft.net> +(cherry picked from commit 3e884493448131179a5b7cae1ddca1028ffaecc8) +--- + drivers/net/ethernet/qualcomm/emac/emac-mac.c | 6 ++++++ + 1 file changed, 6 insertions(+) + +diff --git a/drivers/net/ethernet/qualcomm/emac/emac-mac.c b/drivers/net/ethernet/qualcomm/emac/emac-mac.c +index 6fb3bee..70a55dc 100644 +--- a/drivers/net/ethernet/qualcomm/emac/emac-mac.c ++++ b/drivers/net/ethernet/qualcomm/emac/emac-mac.c +@@ -1003,6 +1003,12 @@ int emac_mac_up(struct emac_adapter *adpt) + writel((u32)~DIS_INT, adpt->base + EMAC_INT_STATUS); + writel(adpt->irq.mask, adpt->base + EMAC_INT_MASK); + ++ /* Enable pause frames. Without this feature, the EMAC has been shown ++ * to receive (and drop) frames with FCS errors at gigabit connections. ++ */ ++ adpt->phydev->supported |= SUPPORTED_Pause | SUPPORTED_Asym_Pause; ++ adpt->phydev->advertising |= SUPPORTED_Pause | SUPPORTED_Asym_Pause; ++ + adpt->phydev->irq = PHY_IGNORE_INTERRUPT; + phy_start(adpt->phydev); + +-- +Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm +Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora +Forum, a Linux Foundation Collaborative Project. + + +From 23a2358a8a1bfbe9d6e532df96deab21045a3b62 Mon Sep 17 00:00:00 2001 +From: Timur Tabi <timur at codeaurora.org> +Date: Mon, 7 Nov 2016 10:51:41 -0600 +Subject: [PATCH 13/17] net: qcom/emac: enable flow control if requested + +If the PHY has been configured to allow pause frames, then the MAC +should be configured to generate and/or accept those frames. + +Signed-off-by: Timur Tabi <timur at codeaurora.org> +Signed-off-by: David S. Miller <davem at davemloft.net> +(cherry picked from commit df63022e182de4041b65ae22df1950d3416b577e) +--- + drivers/net/ethernet/qualcomm/emac/emac-mac.c | 9 +++++---- + 1 file changed, 5 insertions(+), 4 deletions(-) + +diff --git a/drivers/net/ethernet/qualcomm/emac/emac-mac.c b/drivers/net/ethernet/qualcomm/emac/emac-mac.c +index 70a55dc..0b4deb3 100644 +--- a/drivers/net/ethernet/qualcomm/emac/emac-mac.c ++++ b/drivers/net/ethernet/qualcomm/emac/emac-mac.c +@@ -575,10 +575,11 @@ void emac_mac_start(struct emac_adapter *adpt) + + mac |= TXEN | RXEN; /* enable RX/TX */ + +- /* We don't have ethtool support yet, so force flow-control mode +- * to 'full' always. +- */ +- mac |= TXFC | RXFC; ++ /* Configure MAC flow control to match the PHY's settings. */ ++ if (phydev->pause) ++ mac |= RXFC; ++ if (phydev->pause != phydev->asym_pause) ++ mac |= TXFC; + + /* setup link speed */ + mac &= ~SPEED_MASK; +-- +Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm +Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora +Forum, a Linux Foundation Collaborative Project. + + +From e9e22c94ccf95f89ef919aed51602d442ae343ea Mon Sep 17 00:00:00 2001 +From: Johan Hovold <johan at kernel.org> +Date: Thu, 24 Nov 2016 19:21:31 +0100 +Subject: [PATCH 14/17] net: qcom/emac: fix of_node and phydev leaks + +Make sure to drop the reference taken by of_phy_find_device() during +probe on probe errors and on driver unbind. + +Also drop the of_node reference taken by of_parse_phandle() in the same +path. + +Fixes: b9b17debc69d ("net: emac: emac gigabit ethernet controller driver") +Signed-off-by: Johan Hovold <johan at kernel.org> +Signed-off-by: David S. Miller <davem at davemloft.net> +(cherry picked from commit 6ffe1c4cd0a77f51d8d2985aa721d636b03ddf58) +--- + drivers/net/ethernet/qualcomm/emac/emac-phy.c | 1 + + drivers/net/ethernet/qualcomm/emac/emac.c | 4 ++++ + 2 files changed, 5 insertions(+) + +diff --git a/drivers/net/ethernet/qualcomm/emac/emac-phy.c b/drivers/net/ethernet/qualcomm/emac/emac-phy.c +index da4e90d..99a14df 100644 +--- a/drivers/net/ethernet/qualcomm/emac/emac-phy.c ++++ b/drivers/net/ethernet/qualcomm/emac/emac-phy.c +@@ -212,6 +212,7 @@ int emac_phy_config(struct platform_device *pdev, struct emac_adapter *adpt) + + phy_np = of_parse_phandle(np, "phy-handle", 0); + adpt->phydev = of_phy_find_device(phy_np); ++ of_node_put(phy_np); + } + + if (!adpt->phydev) { +diff --git a/drivers/net/ethernet/qualcomm/emac/emac.c b/drivers/net/ethernet/qualcomm/emac/emac.c +index 4fede4b..57b35ae 100644 +--- a/drivers/net/ethernet/qualcomm/emac/emac.c ++++ b/drivers/net/ethernet/qualcomm/emac/emac.c +@@ -711,6 +711,8 @@ static int emac_probe(struct platform_device *pdev) + err_undo_napi: + netif_napi_del(&adpt->rx_q.napi); + err_undo_mdiobus: ++ if (!has_acpi_companion(&pdev->dev)) ++ put_device(&adpt->phydev->mdio.dev); + mdiobus_unregister(adpt->mii_bus); + err_undo_clocks: + emac_clks_teardown(adpt); +@@ -730,6 +732,8 @@ static int emac_remove(struct platform_device *pdev) + + emac_clks_teardown(adpt); + ++ if (!has_acpi_companion(&pdev->dev)) ++ put_device(&adpt->phydev->mdio.dev); + mdiobus_unregister(adpt->mii_bus); + free_netdev(netdev); + +-- +Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm +Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora +Forum, a Linux Foundation Collaborative Project. + + +From a99c0896cc3efc5bc1b91fb1105c83aff0189e65 Mon Sep 17 00:00:00 2001 +From: Timur Tabi <timur at codeaurora.org> +Date: Thu, 8 Dec 2016 13:24:20 -0600 +Subject: [PATCH 15/17] net: qcom/emac: move phy init code to separate files + +The internal PHY of the EMAC differs on each SOC, and the list will +only continue to grow. By separating the code into individual files, +we can add support for more SOCs more cleanly. + +Note: The internal PHY is also sometimes called the SGMII device. + +We also stop referring to the various PHY variations by version number, +so no more "v2", "v3", etc. Instead, the devices are named after the +SOC they are, which is in sync with the device tree property names. + +Future patches will probably rearrange more code among the files. + +Signed-off-by: Timur Tabi <timur at codeaurora.org> +Signed-off-by: David S. Miller <davem at davemloft.net> +(cherry picked from commit 1e88ab6fbbaacbd79dd14ab9ceec7a595611248d) +--- + drivers/net/ethernet/qualcomm/emac/Makefile | 3 +- + .../ethernet/qualcomm/emac/emac-sgmii-fsm9900.c | 245 ++++++++++ + .../ethernet/qualcomm/emac/emac-sgmii-qdf2432.c | 210 ++++++++ + drivers/net/ethernet/qualcomm/emac/emac-sgmii.c | 538 +-------------------- + drivers/net/ethernet/qualcomm/emac/emac-sgmii.h | 5 +- + 5 files changed, 478 insertions(+), 523 deletions(-) + create mode 100644 drivers/net/ethernet/qualcomm/emac/emac-sgmii-fsm9900.c + create mode 100644 drivers/net/ethernet/qualcomm/emac/emac-sgmii-qdf2432.c + +diff --git a/drivers/net/ethernet/qualcomm/emac/Makefile b/drivers/net/ethernet/qualcomm/emac/Makefile +index 01ee144..204b787 100644 +--- a/drivers/net/ethernet/qualcomm/emac/Makefile ++++ b/drivers/net/ethernet/qualcomm/emac/Makefile +@@ -4,4 +4,5 @@ + + obj-$(CONFIG_QCOM_EMAC) += qcom-emac.o + +-qcom-emac-objs := emac.o emac-mac.o emac-phy.o emac-sgmii.o ++qcom-emac-objs := emac.o emac-mac.o emac-phy.o emac-sgmii.o \ ++ emac-sgmii-fsm9900.o emac-sgmii-qdf2432.o +diff --git a/drivers/net/ethernet/qualcomm/emac/emac-sgmii-fsm9900.c b/drivers/net/ethernet/qualcomm/emac/emac-sgmii-fsm9900.c +new file mode 100644 +index 0000000..af690e1 +--- /dev/null ++++ b/drivers/net/ethernet/qualcomm/emac/emac-sgmii-fsm9900.c +@@ -0,0 +1,245 @@ ++/* Copyright (c) 2015-2016, The Linux Foundation. All rights reserved. ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 and ++ * only version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++/* Qualcomm Technologies, Inc. FSM9900 EMAC SGMII Controller driver. ++ */ ++ ++#include <linux/iopoll.h> ++#include "emac.h" ++ ++/* EMAC_QSERDES register offsets */ ++#define EMAC_QSERDES_COM_SYS_CLK_CTRL 0x0000 ++#define EMAC_QSERDES_COM_PLL_CNTRL 0x0014 ++#define EMAC_QSERDES_COM_PLL_IP_SETI 0x0018 ++#define EMAC_QSERDES_COM_PLL_CP_SETI 0x0024 ++#define EMAC_QSERDES_COM_PLL_IP_SETP 0x0028 ++#define EMAC_QSERDES_COM_PLL_CP_SETP 0x002c ++#define EMAC_QSERDES_COM_SYSCLK_EN_SEL 0x0038 ++#define EMAC_QSERDES_COM_RESETSM_CNTRL 0x0040 ++#define EMAC_QSERDES_COM_PLLLOCK_CMP1 0x0044 ++#define EMAC_QSERDES_COM_PLLLOCK_CMP2 0x0048 ++#define EMAC_QSERDES_COM_PLLLOCK_CMP3 0x004c ++#define EMAC_QSERDES_COM_PLLLOCK_CMP_EN 0x0050 ++#define EMAC_QSERDES_COM_DEC_START1 0x0064 ++#define EMAC_QSERDES_COM_DIV_FRAC_START1 0x0098 ++#define EMAC_QSERDES_COM_DIV_FRAC_START2 0x009c ++#define EMAC_QSERDES_COM_DIV_FRAC_START3 0x00a0 ++#define EMAC_QSERDES_COM_DEC_START2 0x00a4 ++#define EMAC_QSERDES_COM_PLL_CRCTRL 0x00ac ++#define EMAC_QSERDES_COM_RESET_SM 0x00bc ++#define EMAC_QSERDES_TX_BIST_MODE_LANENO 0x0100 ++#define EMAC_QSERDES_TX_TX_EMP_POST1_LVL 0x0108 ++#define EMAC_QSERDES_TX_TX_DRV_LVL 0x010c ++#define EMAC_QSERDES_TX_LANE_MODE 0x0150 ++#define EMAC_QSERDES_TX_TRAN_DRVR_EMP_EN 0x0170 ++#define EMAC_QSERDES_RX_CDR_CONTROL 0x0200 ++#define EMAC_QSERDES_RX_CDR_CONTROL2 0x0210 ++#define EMAC_QSERDES_RX_RX_EQ_GAIN12 0x0230 ++ ++/* EMAC_SGMII register offsets */ ++#define EMAC_SGMII_PHY_SERDES_START 0x0000 ++#define EMAC_SGMII_PHY_CMN_PWR_CTRL 0x0004 ++#define EMAC_SGMII_PHY_RX_PWR_CTRL 0x0008 ++#define EMAC_SGMII_PHY_TX_PWR_CTRL 0x000C ++#define EMAC_SGMII_PHY_LANE_CTRL1 0x0018 ++#define EMAC_SGMII_PHY_CDR_CTRL0 0x0058 ++#define EMAC_SGMII_PHY_POW_DWN_CTRL0 0x0080 ++#define EMAC_SGMII_PHY_INTERRUPT_MASK 0x00b4 ++ ++#define PLL_IPSETI(x) ((x) & 0x3f) ++ ++#define PLL_CPSETI(x) ((x) & 0xff) ++ ++#define PLL_IPSETP(x) ((x) & 0x3f) ++ ++#define PLL_CPSETP(x) ((x) & 0x1f) ++ ++#define PLL_RCTRL(x) (((x) & 0xf) << 4) ++#define PLL_CCTRL(x) ((x) & 0xf) ++ ++#define LANE_MODE(x) ((x) & 0x1f) ++ ++#define SYSCLK_CM BIT(4) ++#define SYSCLK_AC_COUPLE BIT(3) ++ ++#define OCP_EN BIT(5) ++#define PLL_DIV_FFEN BIT(2) ++#define PLL_DIV_ORD BIT(1) ++ ++#define SYSCLK_SEL_CMOS BIT(3) ++ ++#define FRQ_TUNE_MODE BIT(4) ++ ++#define PLLLOCK_CMP_EN BIT(0) ++ ++#define DEC_START1_MUX BIT(7) ++#define DEC_START1(x) ((x) & 0x7f) ++ ++#define DIV_FRAC_START_MUX BIT(7) ++#define DIV_FRAC_START(x) ((x) & 0x7f) ++ ++#define DIV_FRAC_START3_MUX BIT(4) ++#define DIV_FRAC_START3(x) ((x) & 0xf) ++ ++#define DEC_START2_MUX BIT(1) ++#define DEC_START2 BIT(0) ++ ++#define READY BIT(5) ++ ++#define TX_EMP_POST1_LVL_MUX BIT(5) ++#define TX_EMP_POST1_LVL(x) ((x) & 0x1f) ++ ++#define TX_DRV_LVL_MUX BIT(4) ++#define TX_DRV_LVL(x) ((x) & 0xf) ++ ++#define EMP_EN_MUX BIT(1) ++#define EMP_EN BIT(0) ++ ++#define SECONDORDERENABLE BIT(6) ++#define FIRSTORDER_THRESH(x) (((x) & 0x7) << 3) ++#define SECONDORDERGAIN(x) ((x) & 0x7) ++ ++#define RX_EQ_GAIN2(x) (((x) & 0xf) << 4) ++#define RX_EQ_GAIN1(x) ((x) & 0xf) ++ ++#define SERDES_START BIT(0) ++ ++#define BIAS_EN BIT(6) ++#define PLL_EN BIT(5) ++#define SYSCLK_EN BIT(4) ++#define CLKBUF_L_EN BIT(3) ++#define PLL_TXCLK_EN BIT(1) ++#define PLL_RXCLK_EN BIT(0) ++ ++#define L0_RX_SIGDET_EN BIT(7) ++#define L0_RX_TERM_MODE(x) (((x) & 3) << 4) ++#define L0_RX_I_EN BIT(1) ++ ++#define L0_TX_EN BIT(5) ++#define L0_CLKBUF_EN BIT(4) ++#define L0_TRAN_BIAS_EN BIT(1) ++ ++#define L0_RX_EQUALIZE_ENABLE BIT(6) ++#define L0_RESET_TSYNC_EN BIT(4) ++#define L0_DRV_LVL(x) ((x) & 0xf) ++ ++#define PWRDN_B BIT(0) ++#define CDR_MAX_CNT(x) ((x) & 0xff) ++ ++#define PLLLOCK_CMP(x) ((x) & 0xff) ++ ++#define SERDES_START_WAIT_TIMES 100 ++ ++struct emac_reg_write { ++ unsigned int offset; ++ u32 val; ++}; ++ ++static void emac_reg_write_all(void __iomem *base, ++ const struct emac_reg_write *itr, size_t size) ++{ ++ size_t i; ++ ++ for (i = 0; i < size; ++itr, ++i) ++ writel(itr->val, base + itr->offset); ++} ++ ++static const struct emac_reg_write physical_coding_sublayer_programming[] = { ++ {EMAC_SGMII_PHY_CDR_CTRL0, CDR_MAX_CNT(15)}, ++ {EMAC_SGMII_PHY_POW_DWN_CTRL0, PWRDN_B}, ++ {EMAC_SGMII_PHY_CMN_PWR_CTRL, ++ BIAS_EN | SYSCLK_EN | CLKBUF_L_EN | PLL_TXCLK_EN | PLL_RXCLK_EN}, ++ {EMAC_SGMII_PHY_TX_PWR_CTRL, L0_TX_EN | L0_CLKBUF_EN | L0_TRAN_BIAS_EN}, ++ {EMAC_SGMII_PHY_RX_PWR_CTRL, ++ L0_RX_SIGDET_EN | L0_RX_TERM_MODE(1) | L0_RX_I_EN}, ++ {EMAC_SGMII_PHY_CMN_PWR_CTRL, ++ BIAS_EN | PLL_EN | SYSCLK_EN | CLKBUF_L_EN | PLL_TXCLK_EN | ++ PLL_RXCLK_EN}, ++ {EMAC_SGMII_PHY_LANE_CTRL1, ++ L0_RX_EQUALIZE_ENABLE | L0_RESET_TSYNC_EN | L0_DRV_LVL(15)}, ++}; ++ ++static const struct emac_reg_write sysclk_refclk_setting[] = { ++ {EMAC_QSERDES_COM_SYSCLK_EN_SEL, SYSCLK_SEL_CMOS}, ++ {EMAC_QSERDES_COM_SYS_CLK_CTRL, SYSCLK_CM | SYSCLK_AC_COUPLE}, ++}; ++ ++static const struct emac_reg_write pll_setting[] = { ++ {EMAC_QSERDES_COM_PLL_IP_SETI, PLL_IPSETI(1)}, ++ {EMAC_QSERDES_COM_PLL_CP_SETI, PLL_CPSETI(59)}, ++ {EMAC_QSERDES_COM_PLL_IP_SETP, PLL_IPSETP(10)}, ++ {EMAC_QSERDES_COM_PLL_CP_SETP, PLL_CPSETP(9)}, ++ {EMAC_QSERDES_COM_PLL_CRCTRL, PLL_RCTRL(15) | PLL_CCTRL(11)}, ++ {EMAC_QSERDES_COM_PLL_CNTRL, OCP_EN | PLL_DIV_FFEN | PLL_DIV_ORD}, ++ {EMAC_QSERDES_COM_DEC_START1, DEC_START1_MUX | DEC_START1(2)}, ++ {EMAC_QSERDES_COM_DEC_START2, DEC_START2_MUX | DEC_START2}, ++ {EMAC_QSERDES_COM_DIV_FRAC_START1, ++ DIV_FRAC_START_MUX | DIV_FRAC_START(85)}, ++ {EMAC_QSERDES_COM_DIV_FRAC_START2, ++ DIV_FRAC_START_MUX | DIV_FRAC_START(42)}, ++ {EMAC_QSERDES_COM_DIV_FRAC_START3, ++ DIV_FRAC_START3_MUX | DIV_FRAC_START3(3)}, ++ {EMAC_QSERDES_COM_PLLLOCK_CMP1, PLLLOCK_CMP(43)}, ++ {EMAC_QSERDES_COM_PLLLOCK_CMP2, PLLLOCK_CMP(104)}, ++ {EMAC_QSERDES_COM_PLLLOCK_CMP3, PLLLOCK_CMP(0)}, ++ {EMAC_QSERDES_COM_PLLLOCK_CMP_EN, PLLLOCK_CMP_EN}, ++ {EMAC_QSERDES_COM_RESETSM_CNTRL, FRQ_TUNE_MODE}, ++}; ++ ++static const struct emac_reg_write cdr_setting[] = { ++ {EMAC_QSERDES_RX_CDR_CONTROL, ++ SECONDORDERENABLE | FIRSTORDER_THRESH(3) | SECONDORDERGAIN(2)}, ++ {EMAC_QSERDES_RX_CDR_CONTROL2, ++ SECONDORDERENABLE | FIRSTORDER_THRESH(3) | SECONDORDERGAIN(4)}, ++}; ++ ++static const struct emac_reg_write tx_rx_setting[] = { ++ {EMAC_QSERDES_TX_BIST_MODE_LANENO, 0}, ++ {EMAC_QSERDES_TX_TX_DRV_LVL, TX_DRV_LVL_MUX | TX_DRV_LVL(15)}, ++ {EMAC_QSERDES_TX_TRAN_DRVR_EMP_EN, EMP_EN_MUX | EMP_EN}, ++ {EMAC_QSERDES_TX_TX_EMP_POST1_LVL, ++ TX_EMP_POST1_LVL_MUX | TX_EMP_POST1_LVL(1)}, ++ {EMAC_QSERDES_RX_RX_EQ_GAIN12, RX_EQ_GAIN2(15) | RX_EQ_GAIN1(15)}, ++ {EMAC_QSERDES_TX_LANE_MODE, LANE_MODE(8)}, ++}; ++ ++int emac_sgmii_init_fsm9900(struct emac_adapter *adpt) ++{ ++ struct emac_phy *phy = &adpt->phy; ++ unsigned int i; ++ ++ emac_reg_write_all(phy->base, physical_coding_sublayer_programming, ++ ARRAY_SIZE(physical_coding_sublayer_programming)); ++ emac_reg_write_all(phy->base, sysclk_refclk_setting, ++ ARRAY_SIZE(sysclk_refclk_setting)); ++ emac_reg_write_all(phy->base, pll_setting, ARRAY_SIZE(pll_setting)); ++ emac_reg_write_all(phy->base, cdr_setting, ARRAY_SIZE(cdr_setting)); ++ emac_reg_write_all(phy->base, tx_rx_setting, ARRAY_SIZE(tx_rx_setting)); ++ ++ /* Power up the Ser/Des engine */ ++ writel(SERDES_START, phy->base + EMAC_SGMII_PHY_SERDES_START); ++ ++ for (i = 0; i < SERDES_START_WAIT_TIMES; i++) { ++ if (readl(phy->base + EMAC_QSERDES_COM_RESET_SM) & READY) ++ break; ++ usleep_range(100, 200); ++ } ++ ++ if (i == SERDES_START_WAIT_TIMES) { ++ netdev_err(adpt->netdev, "error: ser/des failed to start\n"); ++ return -EIO; ++ } ++ /* Mask out all the SGMII Interrupt */ ++ writel(0, phy->base + EMAC_SGMII_PHY_INTERRUPT_MASK); ++ ++ return 0; ++} +diff --git a/drivers/net/ethernet/qualcomm/emac/emac-sgmii-qdf2432.c b/drivers/net/ethernet/qualcomm/emac/emac-sgmii-qdf2432.c +new file mode 100644 +index 0000000..6170200 +--- /dev/null ++++ b/drivers/net/ethernet/qualcomm/emac/emac-sgmii-qdf2432.c +@@ -0,0 +1,210 @@ ++/* Copyright (c) 2015-2016, The Linux Foundation. All rights reserved. ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 and ++ * only version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++/* Qualcomm Technologies, Inc. QDF2432 EMAC SGMII Controller driver. ++ */ ++ ++#include <linux/iopoll.h> ++#include "emac.h" ++ ++/* EMAC_SGMII register offsets */ ++#define EMAC_SGMII_PHY_TX_PWR_CTRL 0x000C ++#define EMAC_SGMII_PHY_LANE_CTRL1 0x0018 ++#define EMAC_SGMII_PHY_CDR_CTRL0 0x0058 ++#define EMAC_SGMII_PHY_POW_DWN_CTRL0 0x0080 ++#define EMAC_SGMII_PHY_RESET_CTRL 0x00a8 ++#define EMAC_SGMII_PHY_INTERRUPT_MASK 0x00b4 ++ ++/* SGMII digital lane registers */ ++#define EMAC_SGMII_LN_DRVR_CTRL0 0x000C ++#define EMAC_SGMII_LN_DRVR_TAP_EN 0x0018 ++#define EMAC_SGMII_LN_TX_MARGINING 0x001C ++#define EMAC_SGMII_LN_TX_PRE 0x0020 ++#define EMAC_SGMII_LN_TX_POST 0x0024 ++#define EMAC_SGMII_LN_TX_BAND_MODE 0x0060 ++#define EMAC_SGMII_LN_LANE_MODE 0x0064 ++#define EMAC_SGMII_LN_PARALLEL_RATE 0x0078 ++#define EMAC_SGMII_LN_CML_CTRL_MODE0 0x00B8 ++#define EMAC_SGMII_LN_MIXER_CTRL_MODE0 0x00D0 ++#define EMAC_SGMII_LN_VGA_INITVAL 0x0134 ++#define EMAC_SGMII_LN_UCDR_FO_GAIN_MODE0 0x017C ++#define EMAC_SGMII_LN_UCDR_SO_GAIN_MODE0 0x0188 ++#define EMAC_SGMII_LN_UCDR_SO_CONFIG 0x0194 ++#define EMAC_SGMII_LN_RX_BAND 0x019C ++#define EMAC_SGMII_LN_RX_RCVR_PATH1_MODE0 0x01B8 ++#define EMAC_SGMII_LN_RSM_CONFIG 0x01F0 ++#define EMAC_SGMII_LN_SIGDET_ENABLES 0x0224 ++#define EMAC_SGMII_LN_SIGDET_CNTRL 0x0228 ++#define EMAC_SGMII_LN_SIGDET_DEGLITCH_CNTRL 0x022C ++#define EMAC_SGMII_LN_RX_EN_SIGNAL 0x02A0 ++#define EMAC_SGMII_LN_RX_MISC_CNTRL0 0x02AC ++#define EMAC_SGMII_LN_DRVR_LOGIC_CLKDIV 0x02BC ++ ++/* SGMII digital lane register values */ ++#define UCDR_STEP_BY_TWO_MODE0 BIT(7) ++#define UCDR_xO_GAIN_MODE(x) ((x) & 0x7f) ++#define UCDR_ENABLE BIT(6) ++#define UCDR_SO_SATURATION(x) ((x) & 0x3f) ++ ++#define SIGDET_LP_BYP_PS4 BIT(7) ++#define SIGDET_EN_PS0_TO_PS2 BIT(6) ++ ++#define TXVAL_VALID_INIT BIT(4) ++#define KR_PCIGEN3_MODE BIT(0) ++ ++#define MAIN_EN BIT(0) ++ ++#define TX_MARGINING_MUX BIT(6) ++#define TX_MARGINING(x) ((x) & 0x3f) ++ ++#define TX_PRE_MUX BIT(6) ++ ++#define TX_POST_MUX BIT(6) ++ ++#define CML_GEAR_MODE(x) (((x) & 7) << 3) ++#define CML2CMOS_IBOOST_MODE(x) ((x) & 7) ++ ++#define MIXER_LOADB_MODE(x) (((x) & 0xf) << 2) ++#define MIXER_DATARATE_MODE(x) ((x) & 3) ++ ++#define VGA_THRESH_DFE(x) ((x) & 0x3f) ++ ++#define SIGDET_LP_BYP_PS0_TO_PS2 BIT(5) ++#define SIGDET_FLT_BYP BIT(0) ++ ++#define SIGDET_LVL(x) (((x) & 0xf) << 4) ++ ++#define SIGDET_DEGLITCH_CTRL(x) (((x) & 0xf) << 1) ++ ++#define DRVR_LOGIC_CLK_EN BIT(4) ++#define DRVR_LOGIC_CLK_DIV(x) ((x) & 0xf) ++ ++#define PARALLEL_RATE_MODE0(x) ((x) & 0x3) ++ ++#define BAND_MODE0(x) ((x) & 0x3) ++ ++#define LANE_MODE(x) ((x) & 0x1f) ++ ++#define CDR_PD_SEL_MODE0(x) (((x) & 0x3) << 5) ++#define BYPASS_RSM_SAMP_CAL BIT(1) ++#define BYPASS_RSM_DLL_CAL BIT(0) ++ ++#define L0_RX_EQUALIZE_ENABLE BIT(6) ++ ++#define PWRDN_B BIT(0) ++ ++#define CDR_MAX_CNT(x) ((x) & 0xff) ++ ++#define SERDES_START_WAIT_TIMES 100 ++ ++struct emac_reg_write { ++ unsigned int offset; ++ u32 val; ++}; ++ ++static void emac_reg_write_all(void __iomem *base, ++ const struct emac_reg_write *itr, size_t size) ++{ ++ size_t i; ++ ++ for (i = 0; i < size; ++itr, ++i) ++ writel(itr->val, base + itr->offset); ++} ++ ++static const struct emac_reg_write sgmii_laned[] = { ++ /* CDR Settings */ ++ {EMAC_SGMII_LN_UCDR_FO_GAIN_MODE0, ++ UCDR_STEP_BY_TWO_MODE0 | UCDR_xO_GAIN_MODE(10)}, ++ {EMAC_SGMII_LN_UCDR_SO_GAIN_MODE0, UCDR_xO_GAIN_MODE(0)}, ++ {EMAC_SGMII_LN_UCDR_SO_CONFIG, UCDR_ENABLE | UCDR_SO_SATURATION(12)}, ++ ++ /* TX/RX Settings */ ++ {EMAC_SGMII_LN_RX_EN_SIGNAL, SIGDET_LP_BYP_PS4 | SIGDET_EN_PS0_TO_PS2}, ++ ++ {EMAC_SGMII_LN_DRVR_CTRL0, TXVAL_VALID_INIT | KR_PCIGEN3_MODE}, ++ {EMAC_SGMII_LN_DRVR_TAP_EN, MAIN_EN}, ++ {EMAC_SGMII_LN_TX_MARGINING, TX_MARGINING_MUX | TX_MARGINING(25)}, ++ {EMAC_SGMII_LN_TX_PRE, TX_PRE_MUX}, ++ {EMAC_SGMII_LN_TX_POST, TX_POST_MUX}, ++ ++ {EMAC_SGMII_LN_CML_CTRL_MODE0, ++ CML_GEAR_MODE(1) | CML2CMOS_IBOOST_MODE(1)}, ++ {EMAC_SGMII_LN_MIXER_CTRL_MODE0, ++ MIXER_LOADB_MODE(12) | MIXER_DATARATE_MODE(1)}, ++ {EMAC_SGMII_LN_VGA_INITVAL, VGA_THRESH_DFE(31)}, ++ {EMAC_SGMII_LN_SIGDET_ENABLES, ++ SIGDET_LP_BYP_PS0_TO_PS2 | SIGDET_FLT_BYP}, ++ {EMAC_SGMII_LN_SIGDET_CNTRL, SIGDET_LVL(8)}, ++ ++ {EMAC_SGMII_LN_SIGDET_DEGLITCH_CNTRL, SIGDET_DEGLITCH_CTRL(4)}, ++ {EMAC_SGMII_LN_RX_MISC_CNTRL0, 0}, ++ {EMAC_SGMII_LN_DRVR_LOGIC_CLKDIV, ++ DRVR_LOGIC_CLK_EN | DRVR_LOGIC_CLK_DIV(4)}, ++ ++ {EMAC_SGMII_LN_PARALLEL_RATE, PARALLEL_RATE_MODE0(1)}, ++ {EMAC_SGMII_LN_TX_BAND_MODE, BAND_MODE0(2)}, ++ {EMAC_SGMII_LN_RX_BAND, BAND_MODE0(3)}, ++ {EMAC_SGMII_LN_LANE_MODE, LANE_MODE(26)}, ++ {EMAC_SGMII_LN_RX_RCVR_PATH1_MODE0, CDR_PD_SEL_MODE0(3)}, ++ {EMAC_SGMII_LN_RSM_CONFIG, BYPASS_RSM_SAMP_CAL | BYPASS_RSM_DLL_CAL}, ++}; ++ ++static const struct emac_reg_write physical_coding_sublayer_programming[] = { ++ {EMAC_SGMII_PHY_POW_DWN_CTRL0, PWRDN_B}, ++ {EMAC_SGMII_PHY_CDR_CTRL0, CDR_MAX_CNT(15)}, ++ {EMAC_SGMII_PHY_TX_PWR_CTRL, 0}, ++ {EMAC_SGMII_PHY_LANE_CTRL1, L0_RX_EQUALIZE_ENABLE}, ++}; ++ ++int emac_sgmii_init_qdf2432(struct emac_adapter *adpt) ++{ ++ struct emac_phy *phy = &adpt->phy; ++ void __iomem *phy_regs = phy->base; ++ void __iomem *laned = phy->digital; ++ unsigned int i; ++ u32 lnstatus; ++ ++ /* PCS lane-x init */ ++ emac_reg_write_all(phy->base, physical_coding_sublayer_programming, ++ ARRAY_SIZE(physical_coding_sublayer_programming)); ++ ++ /* SGMII lane-x init */ ++ emac_reg_write_all(phy->digital, sgmii_laned, ARRAY_SIZE(sgmii_laned)); ++ ++ /* Power up PCS and start reset lane state machine */ ++ ++ writel(0, phy_regs + EMAC_SGMII_PHY_RESET_CTRL); ++ writel(1, laned + SGMII_LN_RSM_START); ++ ++ /* Wait for c_ready assertion */ ++ for (i = 0; i < SERDES_START_WAIT_TIMES; i++) { ++ lnstatus = readl(phy_regs + SGMII_PHY_LN_LANE_STATUS); ++ if (lnstatus & BIT(1)) ++ break; ++ usleep_range(100, 200); ++ } ++ ++ if (i == SERDES_START_WAIT_TIMES) { ++ netdev_err(adpt->netdev, "SGMII failed to start\n"); ++ return -EIO; ++ } ++ ++ /* Disable digital and SERDES loopback */ ++ writel(0, phy_regs + SGMII_PHY_LN_BIST_GEN0); ++ writel(0, phy_regs + SGMII_PHY_LN_BIST_GEN2); ++ writel(0, phy_regs + SGMII_PHY_LN_CDR_CTRL1); ++ ++ /* Mask out all the SGMII Interrupt */ ++ writel(0, phy_regs + EMAC_SGMII_PHY_INTERRUPT_MASK); ++ ++ return 0; ++} +diff --git a/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c b/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c +index 72fe343..0b25c46 100644 +--- a/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c ++++ b/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c +@@ -20,448 +20,33 @@ + #include "emac-mac.h" + #include "emac-sgmii.h" + +-/* EMAC_QSERDES register offsets */ +-#define EMAC_QSERDES_COM_SYS_CLK_CTRL 0x000000 +-#define EMAC_QSERDES_COM_PLL_CNTRL 0x000014 +-#define EMAC_QSERDES_COM_PLL_IP_SETI 0x000018 +-#define EMAC_QSERDES_COM_PLL_CP_SETI 0x000024 +-#define EMAC_QSERDES_COM_PLL_IP_SETP 0x000028 +-#define EMAC_QSERDES_COM_PLL_CP_SETP 0x00002c +-#define EMAC_QSERDES_COM_SYSCLK_EN_SEL 0x000038 +-#define EMAC_QSERDES_COM_RESETSM_CNTRL 0x000040 +-#define EMAC_QSERDES_COM_PLLLOCK_CMP1 0x000044 +-#define EMAC_QSERDES_COM_PLLLOCK_CMP2 0x000048 +-#define EMAC_QSERDES_COM_PLLLOCK_CMP3 0x00004c +-#define EMAC_QSERDES_COM_PLLLOCK_CMP_EN 0x000050 +-#define EMAC_QSERDES_COM_DEC_START1 0x000064 +-#define EMAC_QSERDES_COM_DIV_FRAC_START1 0x000098 +-#define EMAC_QSERDES_COM_DIV_FRAC_START2 0x00009c +-#define EMAC_QSERDES_COM_DIV_FRAC_START3 0x0000a0 +-#define EMAC_QSERDES_COM_DEC_START2 0x0000a4 +-#define EMAC_QSERDES_COM_PLL_CRCTRL 0x0000ac +-#define EMAC_QSERDES_COM_RESET_SM 0x0000bc +-#define EMAC_QSERDES_TX_BIST_MODE_LANENO 0x000100 +-#define EMAC_QSERDES_TX_TX_EMP_POST1_LVL 0x000108 +-#define EMAC_QSERDES_TX_TX_DRV_LVL 0x00010c +-#define EMAC_QSERDES_TX_LANE_MODE 0x000150 +-#define EMAC_QSERDES_TX_TRAN_DRVR_EMP_EN 0x000170 +-#define EMAC_QSERDES_RX_CDR_CONTROL 0x000200 +-#define EMAC_QSERDES_RX_CDR_CONTROL2 0x000210 +-#define EMAC_QSERDES_RX_RX_EQ_GAIN12 0x000230 +- + /* EMAC_SGMII register offsets */ +-#define EMAC_SGMII_PHY_SERDES_START 0x000000 +-#define EMAC_SGMII_PHY_CMN_PWR_CTRL 0x000004 +-#define EMAC_SGMII_PHY_RX_PWR_CTRL 0x000008 +-#define EMAC_SGMII_PHY_TX_PWR_CTRL 0x00000C +-#define EMAC_SGMII_PHY_LANE_CTRL1 0x000018 +-#define EMAC_SGMII_PHY_AUTONEG_CFG2 0x000048 +-#define EMAC_SGMII_PHY_CDR_CTRL0 0x000058 +-#define EMAC_SGMII_PHY_SPEED_CFG1 0x000074 +-#define EMAC_SGMII_PHY_POW_DWN_CTRL0 0x000080 +-#define EMAC_SGMII_PHY_RESET_CTRL 0x0000a8 +-#define EMAC_SGMII_PHY_IRQ_CMD 0x0000ac +-#define EMAC_SGMII_PHY_INTERRUPT_CLEAR 0x0000b0 +-#define EMAC_SGMII_PHY_INTERRUPT_MASK 0x0000b4 +-#define EMAC_SGMII_PHY_INTERRUPT_STATUS 0x0000b8 +-#define EMAC_SGMII_PHY_RX_CHK_STATUS 0x0000d4 +-#define EMAC_SGMII_PHY_AUTONEG0_STATUS 0x0000e0 +-#define EMAC_SGMII_PHY_AUTONEG1_STATUS 0x0000e4 +- +-/* EMAC_QSERDES_COM_PLL_IP_SETI */ +-#define PLL_IPSETI(x) ((x) & 0x3f) +- +-/* EMAC_QSERDES_COM_PLL_CP_SETI */ +-#define PLL_CPSETI(x) ((x) & 0xff) +- +-/* EMAC_QSERDES_COM_PLL_IP_SETP */ +-#define PLL_IPSETP(x) ((x) & 0x3f) +- +-/* EMAC_QSERDES_COM_PLL_CP_SETP */ +-#define PLL_CPSETP(x) ((x) & 0x1f) +- +-/* EMAC_QSERDES_COM_PLL_CRCTRL */ +-#define PLL_RCTRL(x) (((x) & 0xf) << 4) +-#define PLL_CCTRL(x) ((x) & 0xf) +- +-/* SGMII v2 PHY registers per lane */ +-#define EMAC_SGMII_PHY_LN_OFFSET 0x0400 +- +-/* SGMII v2 digital lane registers */ +-#define EMAC_SGMII_LN_DRVR_CTRL0 0x00C +-#define EMAC_SGMII_LN_DRVR_TAP_EN 0x018 +-#define EMAC_SGMII_LN_TX_MARGINING 0x01C +-#define EMAC_SGMII_LN_TX_PRE 0x020 +-#define EMAC_SGMII_LN_TX_POST 0x024 +-#define EMAC_SGMII_LN_TX_BAND_MODE 0x060 +-#define EMAC_SGMII_LN_LANE_MODE 0x064 +-#define EMAC_SGMII_LN_PARALLEL_RATE 0x078 +-#define EMAC_SGMII_LN_CML_CTRL_MODE0 0x0B8 +-#define EMAC_SGMII_LN_MIXER_CTRL_MODE0 0x0D0 +-#define EMAC_SGMII_LN_VGA_INITVAL 0x134 +-#define EMAC_SGMII_LN_UCDR_FO_GAIN_MODE0 0x17C +-#define EMAC_SGMII_LN_UCDR_SO_GAIN_MODE0 0x188 +-#define EMAC_SGMII_LN_UCDR_SO_CONFIG 0x194 +-#define EMAC_SGMII_LN_RX_BAND 0x19C +-#define EMAC_SGMII_LN_RX_RCVR_PATH1_MODE0 0x1B8 +-#define EMAC_SGMII_LN_RSM_CONFIG 0x1F0 +-#define EMAC_SGMII_LN_SIGDET_ENABLES 0x224 +-#define EMAC_SGMII_LN_SIGDET_CNTRL 0x228 +-#define EMAC_SGMII_LN_SIGDET_DEGLITCH_CNTRL 0x22C +-#define EMAC_SGMII_LN_RX_EN_SIGNAL 0x2A0 +-#define EMAC_SGMII_LN_RX_MISC_CNTRL0 0x2AC +-#define EMAC_SGMII_LN_DRVR_LOGIC_CLKDIV 0x2BC +- +-/* SGMII v2 digital lane register values */ +-#define UCDR_STEP_BY_TWO_MODE0 BIT(7) +-#define UCDR_xO_GAIN_MODE(x) ((x) & 0x7f) +-#define UCDR_ENABLE BIT(6) +-#define UCDR_SO_SATURATION(x) ((x) & 0x3f) +-#define SIGDET_LP_BYP_PS4 BIT(7) +-#define SIGDET_EN_PS0_TO_PS2 BIT(6) +-#define EN_ACCOUPLEVCM_SW_MUX BIT(5) +-#define EN_ACCOUPLEVCM_SW BIT(4) +-#define RX_SYNC_EN BIT(3) +-#define RXTERM_HIGHZ_PS5 BIT(2) +-#define SIGDET_EN_PS3 BIT(1) +-#define EN_ACCOUPLE_VCM_PS3 BIT(0) +-#define UFS_MODE BIT(5) +-#define TXVAL_VALID_INIT BIT(4) +-#define TXVAL_VALID_MUX BIT(3) +-#define TXVAL_VALID BIT(2) +-#define USB3P1_MODE BIT(1) +-#define KR_PCIGEN3_MODE BIT(0) +-#define PRE_EN BIT(3) +-#define POST_EN BIT(2) +-#define MAIN_EN_MUX BIT(1) +-#define MAIN_EN BIT(0) +-#define TX_MARGINING_MUX BIT(6) +-#define TX_MARGINING(x) ((x) & 0x3f) +-#define TX_PRE_MUX BIT(6) +-#define TX_PRE(x) ((x) & 0x3f) +-#define TX_POST_MUX BIT(6) +-#define TX_POST(x) ((x) & 0x3f) +-#define CML_GEAR_MODE(x) (((x) & 7) << 3) +-#define CML2CMOS_IBOOST_MODE(x) ((x) & 7) +-#define MIXER_LOADB_MODE(x) (((x) & 0xf) << 2) +-#define MIXER_DATARATE_MODE(x) ((x) & 3) +-#define VGA_THRESH_DFE(x) ((x) & 0x3f) +-#define SIGDET_LP_BYP_PS0_TO_PS2 BIT(5) +-#define SIGDET_LP_BYP_MUX BIT(4) +-#define SIGDET_LP_BYP BIT(3) +-#define SIGDET_EN_MUX BIT(2) +-#define SIGDET_EN BIT(1) +-#define SIGDET_FLT_BYP BIT(0) +-#define SIGDET_LVL(x) (((x) & 0xf) << 4) +-#define SIGDET_BW_CTRL(x) ((x) & 0xf) +-#define SIGDET_DEGLITCH_CTRL(x) (((x) & 0xf) << 1) +-#define SIGDET_DEGLITCH_BYP BIT(0) +-#define INVERT_PCS_RX_CLK BIT(7) +-#define PWM_EN BIT(6) +-#define RXBIAS_SEL(x) (((x) & 0x3) << 4) +-#define EBDAC_SIGN BIT(3) +-#define EDAC_SIGN BIT(2) +-#define EN_AUXTAP1SIGN_INVERT BIT(1) +-#define EN_DAC_CHOPPING BIT(0) +-#define DRVR_LOGIC_CLK_EN BIT(4) +-#define DRVR_LOGIC_CLK_DIV(x) ((x) & 0xf) +-#define PARALLEL_RATE_MODE2(x) (((x) & 0x3) << 4) +-#define PARALLEL_RATE_MODE1(x) (((x) & 0x3) << 2) +-#define PARALLEL_RATE_MODE0(x) ((x) & 0x3) +-#define BAND_MODE2(x) (((x) & 0x3) << 4) +-#define BAND_MODE1(x) (((x) & 0x3) << 2) +-#define BAND_MODE0(x) ((x) & 0x3) +-#define LANE_SYNC_MODE BIT(5) +-#define LANE_MODE(x) ((x) & 0x1f) +-#define CDR_PD_SEL_MODE0(x) (((x) & 0x3) << 5) +-#define EN_DLL_MODE0 BIT(4) +-#define EN_IQ_DCC_MODE0 BIT(3) +-#define EN_IQCAL_MODE0 BIT(2) +-#define EN_QPATH_MODE0 BIT(1) +-#define EN_EPATH_MODE0 BIT(0) +-#define FORCE_TSYNC_ACK BIT(7) +-#define FORCE_CMN_ACK BIT(6) +-#define FORCE_CMN_READY BIT(5) +-#define EN_RCLK_DEGLITCH BIT(4) +-#define BYPASS_RSM_CDR_RESET BIT(3) +-#define BYPASS_RSM_TSYNC BIT(2) +-#define BYPASS_RSM_SAMP_CAL BIT(1) +-#define BYPASS_RSM_DLL_CAL BIT(0) +- +-/* EMAC_QSERDES_COM_SYS_CLK_CTRL */ +-#define SYSCLK_CM BIT(4) +-#define SYSCLK_AC_COUPLE BIT(3) +- +-/* EMAC_QSERDES_COM_PLL_CNTRL */ +-#define OCP_EN BIT(5) +-#define PLL_DIV_FFEN BIT(2) +-#define PLL_DIV_ORD BIT(1) +- +-/* EMAC_QSERDES_COM_SYSCLK_EN_SEL */ +-#define SYSCLK_SEL_CMOS BIT(3) +- +-/* EMAC_QSERDES_COM_RESETSM_CNTRL */ +-#define FRQ_TUNE_MODE BIT(4) +- +-/* EMAC_QSERDES_COM_PLLLOCK_CMP_EN */ +-#define PLLLOCK_CMP_EN BIT(0) +- +-/* EMAC_QSERDES_COM_DEC_START1 */ +-#define DEC_START1_MUX BIT(7) +-#define DEC_START1(x) ((x) & 0x7f) +- +-/* EMAC_QSERDES_COM_DIV_FRAC_START1 * EMAC_QSERDES_COM_DIV_FRAC_START2 */ +-#define DIV_FRAC_START_MUX BIT(7) +-#define DIV_FRAC_START(x) ((x) & 0x7f) +- +-/* EMAC_QSERDES_COM_DIV_FRAC_START3 */ +-#define DIV_FRAC_START3_MUX BIT(4) +-#define DIV_FRAC_START3(x) ((x) & 0xf) +- +-/* EMAC_QSERDES_COM_DEC_START2 */ +-#define DEC_START2_MUX BIT(1) +-#define DEC_START2 BIT(0) +- +-/* EMAC_QSERDES_COM_RESET_SM */ +-#define READY BIT(5) +- +-/* EMAC_QSERDES_TX_TX_EMP_POST1_LVL */ +-#define TX_EMP_POST1_LVL_MUX BIT(5) +-#define TX_EMP_POST1_LVL(x) ((x) & 0x1f) +-#define TX_EMP_POST1_LVL_BMSK 0x1f +-#define TX_EMP_POST1_LVL_SHFT 0 +- +-/* EMAC_QSERDES_TX_TX_DRV_LVL */ +-#define TX_DRV_LVL_MUX BIT(4) +-#define TX_DRV_LVL(x) ((x) & 0xf) +- +-/* EMAC_QSERDES_TX_TRAN_DRVR_EMP_EN */ +-#define EMP_EN_MUX BIT(1) +-#define EMP_EN BIT(0) +- +-/* EMAC_QSERDES_RX_CDR_CONTROL & EMAC_QSERDES_RX_CDR_CONTROL2 */ +-#define HBW_PD_EN BIT(7) +-#define SECONDORDERENABLE BIT(6) +-#define FIRSTORDER_THRESH(x) (((x) & 0x7) << 3) +-#define SECONDORDERGAIN(x) ((x) & 0x7) +- +-/* EMAC_QSERDES_RX_RX_EQ_GAIN12 */ +-#define RX_EQ_GAIN2(x) (((x) & 0xf) << 4) +-#define RX_EQ_GAIN1(x) ((x) & 0xf) +- +-/* EMAC_SGMII_PHY_SERDES_START */ +-#define SERDES_START BIT(0) +- +-/* EMAC_SGMII_PHY_CMN_PWR_CTRL */ +-#define BIAS_EN BIT(6) +-#define PLL_EN BIT(5) +-#define SYSCLK_EN BIT(4) +-#define CLKBUF_L_EN BIT(3) +-#define PLL_TXCLK_EN BIT(1) +-#define PLL_RXCLK_EN BIT(0) +- +-/* EMAC_SGMII_PHY_RX_PWR_CTRL */ +-#define L0_RX_SIGDET_EN BIT(7) +-#define L0_RX_TERM_MODE(x) (((x) & 3) << 4) +-#define L0_RX_I_EN BIT(1) +- +-/* EMAC_SGMII_PHY_TX_PWR_CTRL */ +-#define L0_TX_EN BIT(5) +-#define L0_CLKBUF_EN BIT(4) +-#define L0_TRAN_BIAS_EN BIT(1) +- +-/* EMAC_SGMII_PHY_LANE_CTRL1 */ +-#define L0_RX_EQUALIZE_ENABLE BIT(6) +-#define L0_RESET_TSYNC_EN BIT(4) +-#define L0_DRV_LVL(x) ((x) & 0xf) +- +-/* EMAC_SGMII_PHY_AUTONEG_CFG2 */ ++#define EMAC_SGMII_PHY_AUTONEG_CFG2 0x0048 ++#define EMAC_SGMII_PHY_SPEED_CFG1 0x0074 ++#define EMAC_SGMII_PHY_IRQ_CMD 0x00ac ++#define EMAC_SGMII_PHY_INTERRUPT_CLEAR 0x00b0 ++#define EMAC_SGMII_PHY_INTERRUPT_STATUS 0x00b8 ++ + #define FORCE_AN_TX_CFG BIT(5) + #define FORCE_AN_RX_CFG BIT(4) + #define AN_ENABLE BIT(0) + +-/* EMAC_SGMII_PHY_SPEED_CFG1 */ + #define DUPLEX_MODE BIT(4) + #define SPDMODE_1000 BIT(1) + #define SPDMODE_100 BIT(0) + #define SPDMODE_10 0 +-#define SPDMODE_BMSK 3 +-#define SPDMODE_SHFT 0 +- +-/* EMAC_SGMII_PHY_POW_DWN_CTRL0 */ +-#define PWRDN_B BIT(0) +-#define CDR_MAX_CNT(x) ((x) & 0xff) +- +-/* EMAC_QSERDES_TX_BIST_MODE_LANENO */ +-#define BIST_LANE_NUMBER(x) (((x) & 3) << 5) +-#define BISTMODE(x) ((x) & 0x1f) +- +-/* EMAC_QSERDES_COM_PLLLOCK_CMPx */ +-#define PLLLOCK_CMP(x) ((x) & 0xff) + +-/* EMAC_SGMII_PHY_RESET_CTRL */ +-#define PHY_SW_RESET BIT(0) +- +-/* EMAC_SGMII_PHY_IRQ_CMD */ + #define IRQ_GLOBAL_CLEAR BIT(0) + +-/* EMAC_SGMII_PHY_INTERRUPT_MASK */ + #define DECODE_CODE_ERR BIT(7) + #define DECODE_DISP_ERR BIT(6) +-#define PLL_UNLOCK BIT(5) +-#define AN_ILLEGAL_TERM BIT(4) +-#define SYNC_FAIL BIT(3) +-#define AN_START BIT(2) +-#define AN_END BIT(1) +-#define AN_REQUEST BIT(0) + + #define SGMII_PHY_IRQ_CLR_WAIT_TIME 10 + +-#define SGMII_PHY_INTERRUPT_ERR (\ +- DECODE_CODE_ERR |\ +- DECODE_DISP_ERR) +- +-#define SGMII_ISR_AN_MASK (\ +- AN_REQUEST |\ +- AN_START |\ +- AN_END |\ +- AN_ILLEGAL_TERM |\ +- PLL_UNLOCK |\ +- SYNC_FAIL) +- +-#define SGMII_ISR_MASK (\ +- SGMII_PHY_INTERRUPT_ERR |\ +- SGMII_ISR_AN_MASK) +- +-/* SGMII TX_CONFIG */ +-#define TXCFG_LINK 0x8000 +-#define TXCFG_MODE_BMSK 0x1c00 +-#define TXCFG_1000_FULL 0x1800 +-#define TXCFG_100_FULL 0x1400 +-#define TXCFG_100_HALF 0x0400 +-#define TXCFG_10_FULL 0x1000 +-#define TXCFG_10_HALF 0x0000 ++#define SGMII_PHY_INTERRUPT_ERR (DECODE_CODE_ERR | DECODE_DISP_ERR) + + #define SERDES_START_WAIT_TIMES 100 + +-struct emac_reg_write { +- unsigned int offset; +- u32 val; +-}; +- +-static void emac_reg_write_all(void __iomem *base, +- const struct emac_reg_write *itr, size_t size) +-{ +- size_t i; +- +- for (i = 0; i < size; ++itr, ++i) +- writel(itr->val, base + itr->offset); +-} +- +-static const struct emac_reg_write physical_coding_sublayer_programming_v1[] = { +- {EMAC_SGMII_PHY_CDR_CTRL0, CDR_MAX_CNT(15)}, +- {EMAC_SGMII_PHY_POW_DWN_CTRL0, PWRDN_B}, +- {EMAC_SGMII_PHY_CMN_PWR_CTRL, +- BIAS_EN | SYSCLK_EN | CLKBUF_L_EN | PLL_TXCLK_EN | PLL_RXCLK_EN}, +- {EMAC_SGMII_PHY_TX_PWR_CTRL, L0_TX_EN | L0_CLKBUF_EN | L0_TRAN_BIAS_EN}, +- {EMAC_SGMII_PHY_RX_PWR_CTRL, +- L0_RX_SIGDET_EN | L0_RX_TERM_MODE(1) | L0_RX_I_EN}, +- {EMAC_SGMII_PHY_CMN_PWR_CTRL, +- BIAS_EN | PLL_EN | SYSCLK_EN | CLKBUF_L_EN | PLL_TXCLK_EN | +- PLL_RXCLK_EN}, +- {EMAC_SGMII_PHY_LANE_CTRL1, +- L0_RX_EQUALIZE_ENABLE | L0_RESET_TSYNC_EN | L0_DRV_LVL(15)}, +-}; +- +-static const struct emac_reg_write sysclk_refclk_setting[] = { +- {EMAC_QSERDES_COM_SYSCLK_EN_SEL, SYSCLK_SEL_CMOS}, +- {EMAC_QSERDES_COM_SYS_CLK_CTRL, SYSCLK_CM | SYSCLK_AC_COUPLE}, +-}; +- +-static const struct emac_reg_write pll_setting[] = { +- {EMAC_QSERDES_COM_PLL_IP_SETI, PLL_IPSETI(1)}, +- {EMAC_QSERDES_COM_PLL_CP_SETI, PLL_CPSETI(59)}, +- {EMAC_QSERDES_COM_PLL_IP_SETP, PLL_IPSETP(10)}, +- {EMAC_QSERDES_COM_PLL_CP_SETP, PLL_CPSETP(9)}, +- {EMAC_QSERDES_COM_PLL_CRCTRL, PLL_RCTRL(15) | PLL_CCTRL(11)}, +- {EMAC_QSERDES_COM_PLL_CNTRL, OCP_EN | PLL_DIV_FFEN | PLL_DIV_ORD}, +- {EMAC_QSERDES_COM_DEC_START1, DEC_START1_MUX | DEC_START1(2)}, +- {EMAC_QSERDES_COM_DEC_START2, DEC_START2_MUX | DEC_START2}, +- {EMAC_QSERDES_COM_DIV_FRAC_START1, +- DIV_FRAC_START_MUX | DIV_FRAC_START(85)}, +- {EMAC_QSERDES_COM_DIV_FRAC_START2, +- DIV_FRAC_START_MUX | DIV_FRAC_START(42)}, +- {EMAC_QSERDES_COM_DIV_FRAC_START3, +- DIV_FRAC_START3_MUX | DIV_FRAC_START3(3)}, +- {EMAC_QSERDES_COM_PLLLOCK_CMP1, PLLLOCK_CMP(43)}, +- {EMAC_QSERDES_COM_PLLLOCK_CMP2, PLLLOCK_CMP(104)}, +- {EMAC_QSERDES_COM_PLLLOCK_CMP3, PLLLOCK_CMP(0)}, +- {EMAC_QSERDES_COM_PLLLOCK_CMP_EN, PLLLOCK_CMP_EN}, +- {EMAC_QSERDES_COM_RESETSM_CNTRL, FRQ_TUNE_MODE}, +-}; +- +-static const struct emac_reg_write cdr_setting[] = { +- {EMAC_QSERDES_RX_CDR_CONTROL, +- SECONDORDERENABLE | FIRSTORDER_THRESH(3) | SECONDORDERGAIN(2)}, +- {EMAC_QSERDES_RX_CDR_CONTROL2, +- SECONDORDERENABLE | FIRSTORDER_THRESH(3) | SECONDORDERGAIN(4)}, +-}; +- +-static const struct emac_reg_write tx_rx_setting[] = { +- {EMAC_QSERDES_TX_BIST_MODE_LANENO, 0}, +- {EMAC_QSERDES_TX_TX_DRV_LVL, TX_DRV_LVL_MUX | TX_DRV_LVL(15)}, +- {EMAC_QSERDES_TX_TRAN_DRVR_EMP_EN, EMP_EN_MUX | EMP_EN}, +- {EMAC_QSERDES_TX_TX_EMP_POST1_LVL, +- TX_EMP_POST1_LVL_MUX | TX_EMP_POST1_LVL(1)}, +- {EMAC_QSERDES_RX_RX_EQ_GAIN12, RX_EQ_GAIN2(15) | RX_EQ_GAIN1(15)}, +- {EMAC_QSERDES_TX_LANE_MODE, LANE_MODE(8)}, +-}; +- +-static const struct emac_reg_write sgmii_v2_laned[] = { +- /* CDR Settings */ +- {EMAC_SGMII_LN_UCDR_FO_GAIN_MODE0, +- UCDR_STEP_BY_TWO_MODE0 | UCDR_xO_GAIN_MODE(10)}, +- {EMAC_SGMII_LN_UCDR_SO_GAIN_MODE0, UCDR_xO_GAIN_MODE(0)}, +- {EMAC_SGMII_LN_UCDR_SO_CONFIG, UCDR_ENABLE | UCDR_SO_SATURATION(12)}, +- +- /* TX/RX Settings */ +- {EMAC_SGMII_LN_RX_EN_SIGNAL, SIGDET_LP_BYP_PS4 | SIGDET_EN_PS0_TO_PS2}, +- +- {EMAC_SGMII_LN_DRVR_CTRL0, TXVAL_VALID_INIT | KR_PCIGEN3_MODE}, +- {EMAC_SGMII_LN_DRVR_TAP_EN, MAIN_EN}, +- {EMAC_SGMII_LN_TX_MARGINING, TX_MARGINING_MUX | TX_MARGINING(25)}, +- {EMAC_SGMII_LN_TX_PRE, TX_PRE_MUX}, +- {EMAC_SGMII_LN_TX_POST, TX_POST_MUX}, +- +- {EMAC_SGMII_LN_CML_CTRL_MODE0, +- CML_GEAR_MODE(1) | CML2CMOS_IBOOST_MODE(1)}, +- {EMAC_SGMII_LN_MIXER_CTRL_MODE0, +- MIXER_LOADB_MODE(12) | MIXER_DATARATE_MODE(1)}, +- {EMAC_SGMII_LN_VGA_INITVAL, VGA_THRESH_DFE(31)}, +- {EMAC_SGMII_LN_SIGDET_ENABLES, +- SIGDET_LP_BYP_PS0_TO_PS2 | SIGDET_FLT_BYP}, +- {EMAC_SGMII_LN_SIGDET_CNTRL, SIGDET_LVL(8)}, +- +- {EMAC_SGMII_LN_SIGDET_DEGLITCH_CNTRL, SIGDET_DEGLITCH_CTRL(4)}, +- {EMAC_SGMII_LN_RX_MISC_CNTRL0, 0}, +- {EMAC_SGMII_LN_DRVR_LOGIC_CLKDIV, +- DRVR_LOGIC_CLK_EN | DRVR_LOGIC_CLK_DIV(4)}, +- +- {EMAC_SGMII_LN_PARALLEL_RATE, PARALLEL_RATE_MODE0(1)}, +- {EMAC_SGMII_LN_TX_BAND_MODE, BAND_MODE0(2)}, +- {EMAC_SGMII_LN_RX_BAND, BAND_MODE0(3)}, +- {EMAC_SGMII_LN_LANE_MODE, LANE_MODE(26)}, +- {EMAC_SGMII_LN_RX_RCVR_PATH1_MODE0, CDR_PD_SEL_MODE0(3)}, +- {EMAC_SGMII_LN_RSM_CONFIG, BYPASS_RSM_SAMP_CAL | BYPASS_RSM_DLL_CAL}, +-}; +- +-static const struct emac_reg_write physical_coding_sublayer_programming_v2[] = { +- {EMAC_SGMII_PHY_POW_DWN_CTRL0, PWRDN_B}, +- {EMAC_SGMII_PHY_CDR_CTRL0, CDR_MAX_CNT(15)}, +- {EMAC_SGMII_PHY_TX_PWR_CTRL, 0}, +- {EMAC_SGMII_PHY_LANE_CTRL1, L0_RX_EQUALIZE_ENABLE}, +-}; +- + static int emac_sgmii_link_init(struct emac_adapter *adpt) + { + struct phy_device *phydev = adpt->phydev; +@@ -536,98 +121,6 @@ static int emac_sgmii_irq_clear(struct emac_adapter *adpt, u32 irq_bits) + return 0; + } + +-int emac_sgmii_init_v1(struct emac_adapter *adpt) +-{ +- struct emac_phy *phy = &adpt->phy; +- unsigned int i; +- int ret; +- +- ret = emac_sgmii_link_init(adpt); +- if (ret) +- return ret; +- +- emac_reg_write_all(phy->base, physical_coding_sublayer_programming_v1, +- ARRAY_SIZE(physical_coding_sublayer_programming_v1)); +- emac_reg_write_all(phy->base, sysclk_refclk_setting, +- ARRAY_SIZE(sysclk_refclk_setting)); +- emac_reg_write_all(phy->base, pll_setting, ARRAY_SIZE(pll_setting)); +- emac_reg_write_all(phy->base, cdr_setting, ARRAY_SIZE(cdr_setting)); +- emac_reg_write_all(phy->base, tx_rx_setting, +- ARRAY_SIZE(tx_rx_setting)); +- +- /* Power up the Ser/Des engine */ +- writel(SERDES_START, phy->base + EMAC_SGMII_PHY_SERDES_START); +- +- for (i = 0; i < SERDES_START_WAIT_TIMES; i++) { +- if (readl(phy->base + EMAC_QSERDES_COM_RESET_SM) & READY) +- break; +- usleep_range(100, 200); +- } +- +- if (i == SERDES_START_WAIT_TIMES) { +- netdev_err(adpt->netdev, "error: ser/des failed to start\n"); +- return -EIO; +- } +- /* Mask out all the SGMII Interrupt */ +- writel(0, phy->base + EMAC_SGMII_PHY_INTERRUPT_MASK); +- +- emac_sgmii_irq_clear(adpt, SGMII_PHY_INTERRUPT_ERR); +- +- return 0; +-} +- +-int emac_sgmii_init_v2(struct emac_adapter *adpt) +-{ +- struct emac_phy *phy = &adpt->phy; +- void __iomem *phy_regs = phy->base; +- void __iomem *laned = phy->digital; +- unsigned int i; +- u32 lnstatus; +- int ret; +- +- ret = emac_sgmii_link_init(adpt); +- if (ret) +- return ret; +- +- /* PCS lane-x init */ +- emac_reg_write_all(phy->base, physical_coding_sublayer_programming_v2, +- ARRAY_SIZE(physical_coding_sublayer_programming_v2)); +- +- /* SGMII lane-x init */ +- emac_reg_write_all(phy->digital, +- sgmii_v2_laned, ARRAY_SIZE(sgmii_v2_laned)); +- +- /* Power up PCS and start reset lane state machine */ +- +- writel(0, phy_regs + EMAC_SGMII_PHY_RESET_CTRL); +- writel(1, laned + SGMII_LN_RSM_START); +- +- /* Wait for c_ready assertion */ +- for (i = 0; i < SERDES_START_WAIT_TIMES; i++) { +- lnstatus = readl(phy_regs + SGMII_PHY_LN_LANE_STATUS); +- if (lnstatus & BIT(1)) +- break; +- usleep_range(100, 200); +- } +- +- if (i == SERDES_START_WAIT_TIMES) { +- netdev_err(adpt->netdev, "SGMII failed to start\n"); +- return -EIO; +- } +- +- /* Disable digital and SERDES loopback */ +- writel(0, phy_regs + SGMII_PHY_LN_BIST_GEN0); +- writel(0, phy_regs + SGMII_PHY_LN_BIST_GEN2); +- writel(0, phy_regs + SGMII_PHY_LN_CDR_CTRL1); +- +- /* Mask out all the SGMII Interrupt */ +- writel(0, phy_regs + EMAC_SGMII_PHY_INTERRUPT_MASK); +- +- emac_sgmii_irq_clear(adpt, SGMII_PHY_INTERRUPT_ERR); +- +- return 0; +-} +- + static void emac_sgmii_reset_prepare(struct emac_adapter *adpt) + { + struct emac_phy *phy = &adpt->phy; +@@ -651,16 +144,19 @@ void emac_sgmii_reset(struct emac_adapter *adpt) + { + int ret; + +- clk_set_rate(adpt->clk[EMAC_CLK_HIGH_SPEED], 19200000); + emac_sgmii_reset_prepare(adpt); + ++ ret = emac_sgmii_link_init(adpt); ++ if (ret) { ++ netdev_err(adpt->netdev, "unsupported link speed\n"); ++ return; ++ } ++ + ret = adpt->phy.initialize(adpt); + if (ret) + netdev_err(adpt->netdev, + "could not reinitialize internal PHY (error=%i)\n", + ret); +- +- clk_set_rate(adpt->clk[EMAC_CLK_HIGH_SPEED], 125000000); + } + + static int emac_sgmii_acpi_match(struct device *dev, void *data) +@@ -668,7 +164,7 @@ static int emac_sgmii_acpi_match(struct device *dev, void *data) + static const struct acpi_device_id match_table[] = { + { + .id = "QCOM8071", +- .driver_data = (kernel_ulong_t)emac_sgmii_init_v2, ++ .driver_data = (kernel_ulong_t)emac_sgmii_init_qdf2432, + }, + {} + }; +@@ -684,11 +180,11 @@ static int emac_sgmii_acpi_match(struct device *dev, void *data) + static const struct of_device_id emac_sgmii_dt_match[] = { + { + .compatible = "qcom,fsm9900-emac-sgmii", +- .data = emac_sgmii_init_v1, ++ .data = emac_sgmii_init_fsm9900, + }, + { + .compatible = "qcom,qdf2432-emac-sgmii", +- .data = emac_sgmii_init_v2, ++ .data = emac_sgmii_init_qdf2432, + }, + {} + }; +@@ -765,6 +261,8 @@ int emac_sgmii_config(struct platform_device *pdev, struct emac_adapter *adpt) + if (ret) + goto error; + ++ emac_sgmii_irq_clear(adpt, SGMII_PHY_INTERRUPT_ERR); ++ + /* We've remapped the addresses, so we don't need the device any + * more. of_find_device_by_node() says we should release it. + */ +diff --git a/drivers/net/ethernet/qualcomm/emac/emac-sgmii.h b/drivers/net/ethernet/qualcomm/emac/emac-sgmii.h +index ce79212..e2bef14 100644 +--- a/drivers/net/ethernet/qualcomm/emac/emac-sgmii.h ++++ b/drivers/net/ethernet/qualcomm/emac/emac-sgmii.h +@@ -16,9 +16,10 @@ + struct emac_adapter; + struct platform_device; + +-int emac_sgmii_init_v1(struct emac_adapter *adpt); +-int emac_sgmii_init_v2(struct emac_adapter *adpt); + int emac_sgmii_config(struct platform_device *pdev, struct emac_adapter *adpt); + void emac_sgmii_reset(struct emac_adapter *adpt); + ++int emac_sgmii_init_fsm9900(struct emac_adapter *adpt); ++int emac_sgmii_init_qdf2432(struct emac_adapter *adpt); ++ + #endif +-- +Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm +Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora +Forum, a Linux Foundation Collaborative Project. + + +From 332c9480bd5c0007839889a22b38ba656406b4b0 Mon Sep 17 00:00:00 2001 +From: Timur Tabi <timur at codeaurora.org> +Date: Thu, 8 Dec 2016 13:24:21 -0600 +Subject: [PATCH 16/17] net: qcom/emac: add support for the Qualcomm + Technologies QDF2400 + +The QDF2432 and the QDF2400 have slightly different internal PHYs, +so there are some programming differences. Some of the registers in +the QDF2400 have moved, and some registers require different values +during initialization. + +Because of the differences, and because HIDs are a scare resource, +the ACPI tables specify the hardware version in an _HRV property. +Version 1 is the QDF2432, and version 2 is the QDF2400. Any future +SOC that has the same internal PHY but different programming +requirements will be assigned the next available version number. + +Signed-off-by: Timur Tabi <timur at codeaurora.org> +Signed-off-by: David S. Miller <davem at davemloft.net> +(cherry picked from commit a51f4047232aeb4aee85268b351c7a84b83b36c5) +--- + drivers/net/ethernet/qualcomm/emac/Makefile | 3 +- + .../ethernet/qualcomm/emac/emac-sgmii-qdf2400.c | 217 +++++++++++++++++++++ + drivers/net/ethernet/qualcomm/emac/emac-sgmii.c | 33 +++- + drivers/net/ethernet/qualcomm/emac/emac-sgmii.h | 1 + + 4 files changed, 249 insertions(+), 5 deletions(-) + create mode 100644 drivers/net/ethernet/qualcomm/emac/emac-sgmii-qdf2400.c + +diff --git a/drivers/net/ethernet/qualcomm/emac/Makefile b/drivers/net/ethernet/qualcomm/emac/Makefile +index 204b787..7a66879 100644 +--- a/drivers/net/ethernet/qualcomm/emac/Makefile ++++ b/drivers/net/ethernet/qualcomm/emac/Makefile +@@ -5,4 +5,5 @@ + obj-$(CONFIG_QCOM_EMAC) += qcom-emac.o + + qcom-emac-objs := emac.o emac-mac.o emac-phy.o emac-sgmii.o \ +- emac-sgmii-fsm9900.o emac-sgmii-qdf2432.o ++ emac-sgmii-fsm9900.o emac-sgmii-qdf2432.o \ ++ emac-sgmii-qdf2400.o +diff --git a/drivers/net/ethernet/qualcomm/emac/emac-sgmii-qdf2400.c b/drivers/net/ethernet/qualcomm/emac/emac-sgmii-qdf2400.c +new file mode 100644 +index 0000000..5b84194 +--- /dev/null ++++ b/drivers/net/ethernet/qualcomm/emac/emac-sgmii-qdf2400.c +@@ -0,0 +1,217 @@ ++/* Copyright (c) 2015-2016, The Linux Foundation. All rights reserved. ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 and ++ * only version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++/* Qualcomm Technologies, Inc. QDF2400 EMAC SGMII Controller driver. ++ */ ++ ++#include <linux/iopoll.h> ++#include "emac.h" ++ ++/* EMAC_SGMII register offsets */ ++#define EMAC_SGMII_PHY_TX_PWR_CTRL 0x000C ++#define EMAC_SGMII_PHY_LANE_CTRL1 0x0018 ++#define EMAC_SGMII_PHY_CDR_CTRL0 0x0058 ++#define EMAC_SGMII_PHY_POW_DWN_CTRL0 0x0080 ++#define EMAC_SGMII_PHY_RESET_CTRL 0x00a8 ++#define EMAC_SGMII_PHY_INTERRUPT_MASK 0x00b4 ++ ++/* SGMII digital lane registers */ ++#define EMAC_SGMII_LN_DRVR_CTRL0 0x000C ++#define EMAC_SGMII_LN_DRVR_TAP_EN 0x0018 ++#define EMAC_SGMII_LN_TX_MARGINING 0x001C ++#define EMAC_SGMII_LN_TX_PRE 0x0020 ++#define EMAC_SGMII_LN_TX_POST 0x0024 ++#define EMAC_SGMII_LN_TX_BAND_MODE 0x0060 ++#define EMAC_SGMII_LN_LANE_MODE 0x0064 ++#define EMAC_SGMII_LN_PARALLEL_RATE 0x007C ++#define EMAC_SGMII_LN_CML_CTRL_MODE0 0x00C0 ++#define EMAC_SGMII_LN_MIXER_CTRL_MODE0 0x00D8 ++#define EMAC_SGMII_LN_VGA_INITVAL 0x013C ++#define EMAC_SGMII_LN_UCDR_FO_GAIN_MODE0 0x0184 ++#define EMAC_SGMII_LN_UCDR_SO_GAIN_MODE0 0x0190 ++#define EMAC_SGMII_LN_UCDR_SO_CONFIG 0x019C ++#define EMAC_SGMII_LN_RX_BAND 0x01A4 ++#define EMAC_SGMII_LN_RX_RCVR_PATH1_MODE0 0x01C0 ++#define EMAC_SGMII_LN_RSM_CONFIG 0x01F8 ++#define EMAC_SGMII_LN_SIGDET_ENABLES 0x0230 ++#define EMAC_SGMII_LN_SIGDET_CNTRL 0x0234 ++#define EMAC_SGMII_LN_SIGDET_DEGLITCH_CNTRL 0x0238 ++#define EMAC_SGMII_LN_RX_EN_SIGNAL 0x02AC ++#define EMAC_SGMII_LN_RX_MISC_CNTRL0 0x02B8 ++#define EMAC_SGMII_LN_DRVR_LOGIC_CLKDIV 0x02C8 ++ ++/* SGMII digital lane register values */ ++#define UCDR_STEP_BY_TWO_MODE0 BIT(7) ++#define UCDR_xO_GAIN_MODE(x) ((x) & 0x7f) ++#define UCDR_ENABLE BIT(6) ++#define UCDR_SO_SATURATION(x) ((x) & 0x3f) ++ ++#define SIGDET_LP_BYP_PS4 BIT(7) ++#define SIGDET_EN_PS0_TO_PS2 BIT(6) ++ ++#define TXVAL_VALID_INIT BIT(4) ++#define KR_PCIGEN3_MODE BIT(0) ++ ++#define MAIN_EN BIT(0) ++ ++#define TX_MARGINING_MUX BIT(6) ++#define TX_MARGINING(x) ((x) & 0x3f) ++ ++#define TX_PRE_MUX BIT(6) ++ ++#define TX_POST_MUX BIT(6) ++ ++#define CML_GEAR_MODE(x) (((x) & 7) << 3) ++#define CML2CMOS_IBOOST_MODE(x) ((x) & 7) ++ ++#define MIXER_LOADB_MODE(x) (((x) & 0xf) << 2) ++#define MIXER_DATARATE_MODE(x) ((x) & 3) ++ ++#define VGA_THRESH_DFE(x) ((x) & 0x3f) ++ ++#define SIGDET_LP_BYP_PS0_TO_PS2 BIT(5) ++#define SIGDET_FLT_BYP BIT(0) ++ ++#define SIGDET_LVL(x) (((x) & 0xf) << 4) ++ ++#define SIGDET_DEGLITCH_CTRL(x) (((x) & 0xf) << 1) ++ ++#define INVERT_PCS_RX_CLK BIT(7) ++ ++#define DRVR_LOGIC_CLK_EN BIT(4) ++#define DRVR_LOGIC_CLK_DIV(x) ((x) & 0xf) ++ ++#define PARALLEL_RATE_MODE0(x) ((x) & 0x3) ++ ++#define BAND_MODE0(x) ((x) & 0x3) ++ ++#define LANE_MODE(x) ((x) & 0x1f) ++ ++#define CDR_PD_SEL_MODE0(x) (((x) & 0x3) << 5) ++#define EN_DLL_MODE0 BIT(4) ++#define EN_IQ_DCC_MODE0 BIT(3) ++#define EN_IQCAL_MODE0 BIT(2) ++ ++#define BYPASS_RSM_SAMP_CAL BIT(1) ++#define BYPASS_RSM_DLL_CAL BIT(0) ++ ++#define L0_RX_EQUALIZE_ENABLE BIT(6) ++ ++#define PWRDN_B BIT(0) ++ ++#define CDR_MAX_CNT(x) ((x) & 0xff) ++ ++#define SERDES_START_WAIT_TIMES 100 ++ ++struct emac_reg_write { ++ unsigned int offset; ++ u32 val; ++}; ++ ++static void emac_reg_write_all(void __iomem *base, ++ const struct emac_reg_write *itr, size_t size) ++{ ++ size_t i; ++ ++ for (i = 0; i < size; ++itr, ++i) ++ writel(itr->val, base + itr->offset); ++} ++ ++static const struct emac_reg_write sgmii_laned[] = { ++ /* CDR Settings */ ++ {EMAC_SGMII_LN_UCDR_FO_GAIN_MODE0, ++ UCDR_STEP_BY_TWO_MODE0 | UCDR_xO_GAIN_MODE(10)}, ++ {EMAC_SGMII_LN_UCDR_SO_GAIN_MODE0, UCDR_xO_GAIN_MODE(0)}, ++ {EMAC_SGMII_LN_UCDR_SO_CONFIG, UCDR_ENABLE | UCDR_SO_SATURATION(12)}, ++ ++ /* TX/RX Settings */ ++ {EMAC_SGMII_LN_RX_EN_SIGNAL, SIGDET_LP_BYP_PS4 | SIGDET_EN_PS0_TO_PS2}, ++ ++ {EMAC_SGMII_LN_DRVR_CTRL0, TXVAL_VALID_INIT | KR_PCIGEN3_MODE}, ++ {EMAC_SGMII_LN_DRVR_TAP_EN, MAIN_EN}, ++ {EMAC_SGMII_LN_TX_MARGINING, TX_MARGINING_MUX | TX_MARGINING(25)}, ++ {EMAC_SGMII_LN_TX_PRE, TX_PRE_MUX}, ++ {EMAC_SGMII_LN_TX_POST, TX_POST_MUX}, ++ ++ {EMAC_SGMII_LN_CML_CTRL_MODE0, ++ CML_GEAR_MODE(1) | CML2CMOS_IBOOST_MODE(1)}, ++ {EMAC_SGMII_LN_MIXER_CTRL_MODE0, ++ MIXER_LOADB_MODE(12) | MIXER_DATARATE_MODE(1)}, ++ {EMAC_SGMII_LN_VGA_INITVAL, VGA_THRESH_DFE(31)}, ++ {EMAC_SGMII_LN_SIGDET_ENABLES, ++ SIGDET_LP_BYP_PS0_TO_PS2 | SIGDET_FLT_BYP}, ++ {EMAC_SGMII_LN_SIGDET_CNTRL, SIGDET_LVL(8)}, ++ ++ {EMAC_SGMII_LN_SIGDET_DEGLITCH_CNTRL, SIGDET_DEGLITCH_CTRL(4)}, ++ {EMAC_SGMII_LN_RX_MISC_CNTRL0, INVERT_PCS_RX_CLK}, ++ {EMAC_SGMII_LN_DRVR_LOGIC_CLKDIV, ++ DRVR_LOGIC_CLK_EN | DRVR_LOGIC_CLK_DIV(4)}, ++ ++ {EMAC_SGMII_LN_PARALLEL_RATE, PARALLEL_RATE_MODE0(1)}, ++ {EMAC_SGMII_LN_TX_BAND_MODE, BAND_MODE0(1)}, ++ {EMAC_SGMII_LN_RX_BAND, BAND_MODE0(2)}, ++ {EMAC_SGMII_LN_LANE_MODE, LANE_MODE(26)}, ++ {EMAC_SGMII_LN_RX_RCVR_PATH1_MODE0, CDR_PD_SEL_MODE0(2) | ++ EN_DLL_MODE0 | EN_IQ_DCC_MODE0 | EN_IQCAL_MODE0}, ++ {EMAC_SGMII_LN_RSM_CONFIG, BYPASS_RSM_SAMP_CAL | BYPASS_RSM_DLL_CAL}, ++}; ++ ++static const struct emac_reg_write physical_coding_sublayer_programming[] = { ++ {EMAC_SGMII_PHY_POW_DWN_CTRL0, PWRDN_B}, ++ {EMAC_SGMII_PHY_CDR_CTRL0, CDR_MAX_CNT(15)}, ++ {EMAC_SGMII_PHY_TX_PWR_CTRL, 0}, ++ {EMAC_SGMII_PHY_LANE_CTRL1, L0_RX_EQUALIZE_ENABLE}, ++}; ++ ++int emac_sgmii_init_qdf2400(struct emac_adapter *adpt) ++{ ++ struct emac_phy *phy = &adpt->phy; ++ void __iomem *phy_regs = phy->base; ++ void __iomem *laned = phy->digital; ++ unsigned int i; ++ u32 lnstatus; ++ ++ /* PCS lane-x init */ ++ emac_reg_write_all(phy->base, physical_coding_sublayer_programming, ++ ARRAY_SIZE(physical_coding_sublayer_programming)); ++ ++ /* SGMII lane-x init */ ++ emac_reg_write_all(phy->digital, sgmii_laned, ARRAY_SIZE(sgmii_laned)); ++ ++ /* Power up PCS and start reset lane state machine */ ++ ++ writel(0, phy_regs + EMAC_SGMII_PHY_RESET_CTRL); ++ writel(1, laned + SGMII_LN_RSM_START); ++ ++ /* Wait for c_ready assertion */ ++ for (i = 0; i < SERDES_START_WAIT_TIMES; i++) { ++ lnstatus = readl(phy_regs + SGMII_PHY_LN_LANE_STATUS); ++ if (lnstatus & BIT(1)) ++ break; ++ usleep_range(100, 200); ++ } ++ ++ if (i == SERDES_START_WAIT_TIMES) { ++ netdev_err(adpt->netdev, "SGMII failed to start\n"); ++ return -EIO; ++ } ++ ++ /* Disable digital and SERDES loopback */ ++ writel(0, phy_regs + SGMII_PHY_LN_BIST_GEN0); ++ writel(0, phy_regs + SGMII_PHY_LN_BIST_GEN2); ++ writel(0, phy_regs + SGMII_PHY_LN_CDR_CTRL1); ++ ++ /* Mask out all the SGMII Interrupt */ ++ writel(0, phy_regs + EMAC_SGMII_PHY_INTERRUPT_MASK); ++ ++ return 0; ++} +diff --git a/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c b/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c +index 0b25c46..bf722a9 100644 +--- a/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c ++++ b/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c +@@ -161,20 +161,45 @@ void emac_sgmii_reset(struct emac_adapter *adpt) + + static int emac_sgmii_acpi_match(struct device *dev, void *data) + { ++#ifdef CONFIG_ACPI + static const struct acpi_device_id match_table[] = { + { + .id = "QCOM8071", +- .driver_data = (kernel_ulong_t)emac_sgmii_init_qdf2432, + }, + {} + }; + const struct acpi_device_id *id = acpi_match_device(match_table, dev); + emac_sgmii_initialize *initialize = data; + +- if (id) +- *initialize = (emac_sgmii_initialize)id->driver_data; ++ if (id) { ++ acpi_handle handle = ACPI_HANDLE(dev); ++ unsigned long long hrv; ++ acpi_status status; ++ ++ status = acpi_evaluate_integer(handle, "_HRV", NULL, &hrv); ++ if (status) { ++ if (status == AE_NOT_FOUND) ++ /* Older versions of the QDF2432 ACPI tables do ++ * not have an _HRV property. ++ */ ++ hrv = 1; ++ else ++ /* Something is wrong with the tables */ ++ return 0; ++ } + +- return !!id; ++ switch (hrv) { ++ case 1: ++ *initialize = emac_sgmii_init_qdf2432; ++ return 1; ++ case 2: ++ *initialize = emac_sgmii_init_qdf2400; ++ return 1; ++ } ++ } ++#endif ++ ++ return 0; + } + + static const struct of_device_id emac_sgmii_dt_match[] = { +diff --git a/drivers/net/ethernet/qualcomm/emac/emac-sgmii.h b/drivers/net/ethernet/qualcomm/emac/emac-sgmii.h +index e2bef14..80ed3dc 100644 +--- a/drivers/net/ethernet/qualcomm/emac/emac-sgmii.h ++++ b/drivers/net/ethernet/qualcomm/emac/emac-sgmii.h +@@ -21,5 +21,6 @@ void emac_sgmii_reset(struct emac_adapter *adpt); + + int emac_sgmii_init_fsm9900(struct emac_adapter *adpt); + int emac_sgmii_init_qdf2432(struct emac_adapter *adpt); ++int emac_sgmii_init_qdf2400(struct emac_adapter *adpt); + + #endif +-- +Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm +Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora +Forum, a Linux Foundation Collaborative Project. + + +From 487f43557b866af3491ced8076ee32de12f33592 Mon Sep 17 00:00:00 2001 +From: Timur Tabi <timur at codeaurora.org> +Date: Tue, 13 Dec 2016 17:49:02 -0600 +Subject: [PATCH 17/17] net: qcom/emac: don't try to claim clocks on ACPI + systems + +On ACPI systems, clocks are not available to drivers directly. They are +handled exclusively by ACPI and/or firmware, so there is no clock driver. +Calls to clk_get() always fail, so we should not even attempt to claim +any clocks on ACPI systems. + +Signed-off-by: Timur Tabi <timur at codeaurora.org> +Reviewed-by: Florian Fainelli <f.fainelli at gmail.com> +Signed-off-by: David S. Miller <davem at davemloft.net> +(cherry picked from commit 026acd5f47340382844f0af73516cf7ae6cdc876) +--- + drivers/net/ethernet/qualcomm/emac/emac.c | 9 +++++++++ + 1 file changed, 9 insertions(+) + +diff --git a/drivers/net/ethernet/qualcomm/emac/emac.c b/drivers/net/ethernet/qualcomm/emac/emac.c +index 57b35ae..e2f6d1b 100644 +--- a/drivers/net/ethernet/qualcomm/emac/emac.c ++++ b/drivers/net/ethernet/qualcomm/emac/emac.c +@@ -467,6 +467,12 @@ static int emac_clks_phase1_init(struct platform_device *pdev, + { + int ret; + ++ /* On ACPI platforms, clocks are controlled by firmware and/or ++ * ACPI, not by drivers. ++ */ ++ if (has_acpi_companion(&pdev->dev)) ++ return 0; ++ + ret = emac_clks_get(pdev, adpt); + if (ret) + return ret; +@@ -492,6 +498,9 @@ static int emac_clks_phase2_init(struct platform_device *pdev, + { + int ret; + ++ if (has_acpi_companion(&pdev->dev)) ++ return 0; ++ + ret = clk_set_rate(adpt->clk[EMAC_CLK_TX], 125000000); + if (ret) + return ret; +-- +Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm +Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora +Forum, a Linux Foundation Collaborative Project. + diff --git a/SOURCES/config-centos-sig b/SOURCES/config-centos-sig index 20bab07..872729a 100644 --- a/SOURCES/config-centos-sig +++ b/SOURCES/config-centos-sig @@ -11,3 +11,6 @@ CONFIG_I2C_DESIGNWARE_PLATFORM=m CONFIG_I2C_DESIGNWARE_PCI=m CONFIG_THUNDER_NIC_RGX=m CONFIG_MLX5_CORE_EN=y +CONFIG_NET_VENDOR_QUALCOMM=y +CONFIG_QCOM_EMAC=m +# CONFIG_QCA7000 is not set diff --git a/SPECS/kernel-aarch64.spec b/SPECS/kernel-aarch64.spec index f781578..d6e76bd 100644 --- a/SPECS/kernel-aarch64.spec +++ b/SPECS/kernel-aarch64.spec @@ -12,7 +12,7 @@ Summary: The Linux kernel %define rpmversion 4.5.0 %define pkgrelease 15.el7 -%define centupdate 20.el7 +%define centupdate 21.el7 # allow pkg_release to have configurable %{?dist} tag %define specrelease %%SPECRELEASE%% @@ -361,6 +361,7 @@ Patch2000: ThunderX-7.3.1611.patch Patch4000: 4000-arm64-Define-Qualcomm-Technologies-ARMv8-CPU.patch Patch4001: 4001-arm64-Workaround-Falkor-E1003.patch Patch4002: 4002-arm64-Workaround-Falkor-E1009.patch +Patch4003: 4003-net-qcom-emac.patch # empty final patch to facilitate testing of kernel patches Patch999999: linux-kernel-test.patch @@ -727,6 +728,7 @@ git am %{PATCH2000} git am %{PATCH4000} git am %{PATCH4001} git am %{PATCH4002} +git am %{PATCH4003} # Any further pre-build tree manipulations happen here. @@ -1500,6 +1502,9 @@ fi %kernel_variant_files %{with_debug} kernel-debug debug %changelog +* Mon Dec 19 2016 Christopher Covington <cov at codeaurora.org> [4.5.0-21.el7] +- Add QDF2400 EMAC on-board Ethernet support + * Tue Dec 13 2016 Christopher Covington <cov at codeaurora.org> [4.5.0-20.el7] - Add Mellanox ConnectX-4 Ethernet support -- Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.
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