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Message-Id: <20200218171321.30990-8-robh@kernel.org>
Date: Tue, 18 Feb 2020 11:13:17 -0600
From: Rob Herring <robh@...nel.org>
To: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
soc@...nel.org, Andre Przywara <andre.przywara@....com>,
Robert Richter <rrichter@...vell.com>,
Jon Loeliger <jdl@....com>, Alexander Graf <graf@...zon.com>,
Matthias Brugger <mbrugger@...e.com>,
Mark Langsdorf <mlangsdo@...hat.com>
Cc: Alex Williamson <alex.williamson@...hat.com>,
Borislav Petkov <bp@...en8.de>,
Cornelia Huck <cohuck@...hat.com>,
Daniel Lezcano <daniel.lezcano@...aro.org>,
"David S. Miller" <davem@...emloft.net>,
devicetree@...r.kernel.org, Eric Auger <eric.auger@...hat.com>,
iommu@...ts.linux-foundation.org,
James Morse <james.morse@....com>,
Jens Axboe <axboe@...nel.dk>, Joerg Roedel <joro@...tes.org>,
kvm@...r.kernel.org, linux-clk@...r.kernel.org,
linux-edac@...r.kernel.org, linux-ide@...r.kernel.org,
linux-pm@...r.kernel.org,
Mauro Carvalho Chehab <mchehab@...nel.org>,
netdev@...r.kernel.org, "Rafael J. Wysocki" <rjw@...ysocki.net>,
Robin Murphy <robin.murphy@....com>,
Stephen Boyd <sboyd@...nel.org>,
Tony Luck <tony.luck@...el.com>,
Viresh Kumar <viresh.kumar@...aro.org>,
Will Deacon <will@...nel.org>
Subject: [RFC PATCH 07/11] net: Remove Calxeda XGMAC driver
Cc: "David S. Miller" <davem@...emloft.net>
Cc: netdev@...r.kernel.org
Signed-off-by: Rob Herring <robh@...nel.org>
---
Do not apply yet.
drivers/net/ethernet/Kconfig | 1 -
drivers/net/ethernet/Makefile | 1 -
drivers/net/ethernet/calxeda/Kconfig | 9 -
drivers/net/ethernet/calxeda/Makefile | 2 -
drivers/net/ethernet/calxeda/xgmac.c | 1927 -------------------------
5 files changed, 1940 deletions(-)
delete mode 100644 drivers/net/ethernet/calxeda/Kconfig
delete mode 100644 drivers/net/ethernet/calxeda/Makefile
delete mode 100644 drivers/net/ethernet/calxeda/xgmac.c
diff --git a/drivers/net/ethernet/Kconfig b/drivers/net/ethernet/Kconfig
index 4ded81b27d0a..023928e82b44 100644
--- a/drivers/net/ethernet/Kconfig
+++ b/drivers/net/ethernet/Kconfig
@@ -37,7 +37,6 @@ source "drivers/net/ethernet/aurora/Kconfig"
source "drivers/net/ethernet/broadcom/Kconfig"
source "drivers/net/ethernet/brocade/Kconfig"
source "drivers/net/ethernet/cadence/Kconfig"
-source "drivers/net/ethernet/calxeda/Kconfig"
source "drivers/net/ethernet/cavium/Kconfig"
source "drivers/net/ethernet/chelsio/Kconfig"
source "drivers/net/ethernet/cirrus/Kconfig"
diff --git a/drivers/net/ethernet/Makefile b/drivers/net/ethernet/Makefile
index f8f38dcb5f8a..1011131a736d 100644
--- a/drivers/net/ethernet/Makefile
+++ b/drivers/net/ethernet/Makefile
@@ -23,7 +23,6 @@ obj-$(CONFIG_NET_VENDOR_AURORA) += aurora/
obj-$(CONFIG_NET_VENDOR_CADENCE) += cadence/
obj-$(CONFIG_NET_VENDOR_BROADCOM) += broadcom/
obj-$(CONFIG_NET_VENDOR_BROCADE) += brocade/
-obj-$(CONFIG_NET_CALXEDA_XGMAC) += calxeda/
obj-$(CONFIG_NET_VENDOR_CAVIUM) += cavium/
obj-$(CONFIG_NET_VENDOR_CHELSIO) += chelsio/
obj-$(CONFIG_NET_VENDOR_CIRRUS) += cirrus/
diff --git a/drivers/net/ethernet/calxeda/Kconfig b/drivers/net/ethernet/calxeda/Kconfig
deleted file mode 100644
index ce42157f13f6..000000000000
--- a/drivers/net/ethernet/calxeda/Kconfig
+++ /dev/null
@@ -1,9 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-config NET_CALXEDA_XGMAC
- tristate "Calxeda 1G/10G XGMAC Ethernet driver"
- depends on HAS_IOMEM
- depends on ARCH_HIGHBANK || COMPILE_TEST
- select CRC32
- help
- This is the driver for the XGMAC Ethernet IP block found on Calxeda
- Highbank platforms.
diff --git a/drivers/net/ethernet/calxeda/Makefile b/drivers/net/ethernet/calxeda/Makefile
deleted file mode 100644
index 641e5b6b5ac7..000000000000
--- a/drivers/net/ethernet/calxeda/Makefile
+++ /dev/null
@@ -1,2 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-obj-$(CONFIG_NET_CALXEDA_XGMAC) += xgmac.o
diff --git a/drivers/net/ethernet/calxeda/xgmac.c b/drivers/net/ethernet/calxeda/xgmac.c
deleted file mode 100644
index 05a3d067c3fc..000000000000
--- a/drivers/net/ethernet/calxeda/xgmac.c
+++ /dev/null
@@ -1,1927 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright 2010-2011 Calxeda, Inc.
- */
-#include <linux/module.h>
-#include <linux/mod_devicetable.h>
-#include <linux/kernel.h>
-#include <linux/circ_buf.h>
-#include <linux/interrupt.h>
-#include <linux/etherdevice.h>
-#include <linux/platform_device.h>
-#include <linux/skbuff.h>
-#include <linux/ethtool.h>
-#include <linux/if.h>
-#include <linux/crc32.h>
-#include <linux/dma-mapping.h>
-#include <linux/slab.h>
-
-/* XGMAC Register definitions */
-#define XGMAC_CONTROL 0x00000000 /* MAC Configuration */
-#define XGMAC_FRAME_FILTER 0x00000004 /* MAC Frame Filter */
-#define XGMAC_FLOW_CTRL 0x00000018 /* MAC Flow Control */
-#define XGMAC_VLAN_TAG 0x0000001C /* VLAN Tags */
-#define XGMAC_VERSION 0x00000020 /* Version */
-#define XGMAC_VLAN_INCL 0x00000024 /* VLAN tag for tx frames */
-#define XGMAC_LPI_CTRL 0x00000028 /* LPI Control and Status */
-#define XGMAC_LPI_TIMER 0x0000002C /* LPI Timers Control */
-#define XGMAC_TX_PACE 0x00000030 /* Transmit Pace and Stretch */
-#define XGMAC_VLAN_HASH 0x00000034 /* VLAN Hash Table */
-#define XGMAC_DEBUG 0x00000038 /* Debug */
-#define XGMAC_INT_STAT 0x0000003C /* Interrupt and Control */
-#define XGMAC_ADDR_HIGH(reg) (0x00000040 + ((reg) * 8))
-#define XGMAC_ADDR_LOW(reg) (0x00000044 + ((reg) * 8))
-#define XGMAC_HASH(n) (0x00000300 + (n) * 4) /* HASH table regs */
-#define XGMAC_NUM_HASH 16
-#define XGMAC_OMR 0x00000400
-#define XGMAC_REMOTE_WAKE 0x00000700 /* Remote Wake-Up Frm Filter */
-#define XGMAC_PMT 0x00000704 /* PMT Control and Status */
-#define XGMAC_MMC_CTRL 0x00000800 /* XGMAC MMC Control */
-#define XGMAC_MMC_INTR_RX 0x00000804 /* Receive Interrupt */
-#define XGMAC_MMC_INTR_TX 0x00000808 /* Transmit Interrupt */
-#define XGMAC_MMC_INTR_MASK_RX 0x0000080c /* Receive Interrupt Mask */
-#define XGMAC_MMC_INTR_MASK_TX 0x00000810 /* Transmit Interrupt Mask */
-
-/* Hardware TX Statistics Counters */
-#define XGMAC_MMC_TXOCTET_GB_LO 0x00000814
-#define XGMAC_MMC_TXOCTET_GB_HI 0x00000818
-#define XGMAC_MMC_TXFRAME_GB_LO 0x0000081C
-#define XGMAC_MMC_TXFRAME_GB_HI 0x00000820
-#define XGMAC_MMC_TXBCFRAME_G 0x00000824
-#define XGMAC_MMC_TXMCFRAME_G 0x0000082C
-#define XGMAC_MMC_TXUCFRAME_GB 0x00000864
-#define XGMAC_MMC_TXMCFRAME_GB 0x0000086C
-#define XGMAC_MMC_TXBCFRAME_GB 0x00000874
-#define XGMAC_MMC_TXUNDERFLOW 0x0000087C
-#define XGMAC_MMC_TXOCTET_G_LO 0x00000884
-#define XGMAC_MMC_TXOCTET_G_HI 0x00000888
-#define XGMAC_MMC_TXFRAME_G_LO 0x0000088C
-#define XGMAC_MMC_TXFRAME_G_HI 0x00000890
-#define XGMAC_MMC_TXPAUSEFRAME 0x00000894
-#define XGMAC_MMC_TXVLANFRAME 0x0000089C
-
-/* Hardware RX Statistics Counters */
-#define XGMAC_MMC_RXFRAME_GB_LO 0x00000900
-#define XGMAC_MMC_RXFRAME_GB_HI 0x00000904
-#define XGMAC_MMC_RXOCTET_GB_LO 0x00000908
-#define XGMAC_MMC_RXOCTET_GB_HI 0x0000090C
-#define XGMAC_MMC_RXOCTET_G_LO 0x00000910
-#define XGMAC_MMC_RXOCTET_G_HI 0x00000914
-#define XGMAC_MMC_RXBCFRAME_G 0x00000918
-#define XGMAC_MMC_RXMCFRAME_G 0x00000920
-#define XGMAC_MMC_RXCRCERR 0x00000928
-#define XGMAC_MMC_RXRUNT 0x00000930
-#define XGMAC_MMC_RXJABBER 0x00000934
-#define XGMAC_MMC_RXUCFRAME_G 0x00000970
-#define XGMAC_MMC_RXLENGTHERR 0x00000978
-#define XGMAC_MMC_RXPAUSEFRAME 0x00000988
-#define XGMAC_MMC_RXOVERFLOW 0x00000990
-#define XGMAC_MMC_RXVLANFRAME 0x00000998
-#define XGMAC_MMC_RXWATCHDOG 0x000009a0
-
-/* DMA Control and Status Registers */
-#define XGMAC_DMA_BUS_MODE 0x00000f00 /* Bus Mode */
-#define XGMAC_DMA_TX_POLL 0x00000f04 /* Transmit Poll Demand */
-#define XGMAC_DMA_RX_POLL 0x00000f08 /* Received Poll Demand */
-#define XGMAC_DMA_RX_BASE_ADDR 0x00000f0c /* Receive List Base */
-#define XGMAC_DMA_TX_BASE_ADDR 0x00000f10 /* Transmit List Base */
-#define XGMAC_DMA_STATUS 0x00000f14 /* Status Register */
-#define XGMAC_DMA_CONTROL 0x00000f18 /* Ctrl (Operational Mode) */
-#define XGMAC_DMA_INTR_ENA 0x00000f1c /* Interrupt Enable */
-#define XGMAC_DMA_MISS_FRAME_CTR 0x00000f20 /* Missed Frame Counter */
-#define XGMAC_DMA_RI_WDOG_TIMER 0x00000f24 /* RX Intr Watchdog Timer */
-#define XGMAC_DMA_AXI_BUS 0x00000f28 /* AXI Bus Mode */
-#define XGMAC_DMA_AXI_STATUS 0x00000f2C /* AXI Status */
-#define XGMAC_DMA_HW_FEATURE 0x00000f58 /* Enabled Hardware Features */
-
-#define XGMAC_ADDR_AE 0x80000000
-
-/* PMT Control and Status */
-#define XGMAC_PMT_POINTER_RESET 0x80000000
-#define XGMAC_PMT_GLBL_UNICAST 0x00000200
-#define XGMAC_PMT_WAKEUP_RX_FRM 0x00000040
-#define XGMAC_PMT_MAGIC_PKT 0x00000020
-#define XGMAC_PMT_WAKEUP_FRM_EN 0x00000004
-#define XGMAC_PMT_MAGIC_PKT_EN 0x00000002
-#define XGMAC_PMT_POWERDOWN 0x00000001
-
-#define XGMAC_CONTROL_SPD 0x40000000 /* Speed control */
-#define XGMAC_CONTROL_SPD_MASK 0x60000000
-#define XGMAC_CONTROL_SPD_1G 0x60000000
-#define XGMAC_CONTROL_SPD_2_5G 0x40000000
-#define XGMAC_CONTROL_SPD_10G 0x00000000
-#define XGMAC_CONTROL_SARC 0x10000000 /* Source Addr Insert/Replace */
-#define XGMAC_CONTROL_SARK_MASK 0x18000000
-#define XGMAC_CONTROL_CAR 0x04000000 /* CRC Addition/Replacement */
-#define XGMAC_CONTROL_CAR_MASK 0x06000000
-#define XGMAC_CONTROL_DP 0x01000000 /* Disable Padding */
-#define XGMAC_CONTROL_WD 0x00800000 /* Disable Watchdog on rx */
-#define XGMAC_CONTROL_JD 0x00400000 /* Jabber disable */
-#define XGMAC_CONTROL_JE 0x00100000 /* Jumbo frame */
-#define XGMAC_CONTROL_LM 0x00001000 /* Loop-back mode */
-#define XGMAC_CONTROL_IPC 0x00000400 /* Checksum Offload */
-#define XGMAC_CONTROL_ACS 0x00000080 /* Automatic Pad/FCS Strip */
-#define XGMAC_CONTROL_DDIC 0x00000010 /* Disable Deficit Idle Count */
-#define XGMAC_CONTROL_TE 0x00000008 /* Transmitter Enable */
-#define XGMAC_CONTROL_RE 0x00000004 /* Receiver Enable */
-
-/* XGMAC Frame Filter defines */
-#define XGMAC_FRAME_FILTER_PR 0x00000001 /* Promiscuous Mode */
-#define XGMAC_FRAME_FILTER_HUC 0x00000002 /* Hash Unicast */
-#define XGMAC_FRAME_FILTER_HMC 0x00000004 /* Hash Multicast */
-#define XGMAC_FRAME_FILTER_DAIF 0x00000008 /* DA Inverse Filtering */
-#define XGMAC_FRAME_FILTER_PM 0x00000010 /* Pass all multicast */
-#define XGMAC_FRAME_FILTER_DBF 0x00000020 /* Disable Broadcast frames */
-#define XGMAC_FRAME_FILTER_SAIF 0x00000100 /* Inverse Filtering */
-#define XGMAC_FRAME_FILTER_SAF 0x00000200 /* Source Address Filter */
-#define XGMAC_FRAME_FILTER_HPF 0x00000400 /* Hash or perfect Filter */
-#define XGMAC_FRAME_FILTER_VHF 0x00000800 /* VLAN Hash Filter */
-#define XGMAC_FRAME_FILTER_VPF 0x00001000 /* VLAN Perfect Filter */
-#define XGMAC_FRAME_FILTER_RA 0x80000000 /* Receive all mode */
-
-/* XGMAC FLOW CTRL defines */
-#define XGMAC_FLOW_CTRL_PT_MASK 0xffff0000 /* Pause Time Mask */
-#define XGMAC_FLOW_CTRL_PT_SHIFT 16
-#define XGMAC_FLOW_CTRL_DZQP 0x00000080 /* Disable Zero-Quanta Phase */
-#define XGMAC_FLOW_CTRL_PLT 0x00000020 /* Pause Low Threshold */
-#define XGMAC_FLOW_CTRL_PLT_MASK 0x00000030 /* PLT MASK */
-#define XGMAC_FLOW_CTRL_UP 0x00000008 /* Unicast Pause Frame Detect */
-#define XGMAC_FLOW_CTRL_RFE 0x00000004 /* Rx Flow Control Enable */
-#define XGMAC_FLOW_CTRL_TFE 0x00000002 /* Tx Flow Control Enable */
-#define XGMAC_FLOW_CTRL_FCB_BPA 0x00000001 /* Flow Control Busy ... */
-
-/* XGMAC_INT_STAT reg */
-#define XGMAC_INT_STAT_PMTIM 0x00800000 /* PMT Interrupt Mask */
-#define XGMAC_INT_STAT_PMT 0x0080 /* PMT Interrupt Status */
-#define XGMAC_INT_STAT_LPI 0x0040 /* LPI Interrupt Status */
-
-/* DMA Bus Mode register defines */
-#define DMA_BUS_MODE_SFT_RESET 0x00000001 /* Software Reset */
-#define DMA_BUS_MODE_DSL_MASK 0x0000007c /* Descriptor Skip Length */
-#define DMA_BUS_MODE_DSL_SHIFT 2 /* (in DWORDS) */
-#define DMA_BUS_MODE_ATDS 0x00000080 /* Alternate Descriptor Size */
-
-/* Programmable burst length */
-#define DMA_BUS_MODE_PBL_MASK 0x00003f00 /* Programmable Burst Len */
-#define DMA_BUS_MODE_PBL_SHIFT 8
-#define DMA_BUS_MODE_FB 0x00010000 /* Fixed burst */
-#define DMA_BUS_MODE_RPBL_MASK 0x003e0000 /* Rx-Programmable Burst Len */
-#define DMA_BUS_MODE_RPBL_SHIFT 17
-#define DMA_BUS_MODE_USP 0x00800000
-#define DMA_BUS_MODE_8PBL 0x01000000
-#define DMA_BUS_MODE_AAL 0x02000000
-
-/* DMA Bus Mode register defines */
-#define DMA_BUS_PR_RATIO_MASK 0x0000c000 /* Rx/Tx priority ratio */
-#define DMA_BUS_PR_RATIO_SHIFT 14
-#define DMA_BUS_FB 0x00010000 /* Fixed Burst */
-
-/* DMA Control register defines */
-#define DMA_CONTROL_ST 0x00002000 /* Start/Stop Transmission */
-#define DMA_CONTROL_SR 0x00000002 /* Start/Stop Receive */
-#define DMA_CONTROL_DFF 0x01000000 /* Disable flush of rx frames */
-#define DMA_CONTROL_OSF 0x00000004 /* Operate on 2nd tx frame */
-
-/* DMA Normal interrupt */
-#define DMA_INTR_ENA_NIE 0x00010000 /* Normal Summary */
-#define DMA_INTR_ENA_AIE 0x00008000 /* Abnormal Summary */
-#define DMA_INTR_ENA_ERE 0x00004000 /* Early Receive */
-#define DMA_INTR_ENA_FBE 0x00002000 /* Fatal Bus Error */
-#define DMA_INTR_ENA_ETE 0x00000400 /* Early Transmit */
-#define DMA_INTR_ENA_RWE 0x00000200 /* Receive Watchdog */
-#define DMA_INTR_ENA_RSE 0x00000100 /* Receive Stopped */
-#define DMA_INTR_ENA_RUE 0x00000080 /* Receive Buffer Unavailable */
-#define DMA_INTR_ENA_RIE 0x00000040 /* Receive Interrupt */
-#define DMA_INTR_ENA_UNE 0x00000020 /* Tx Underflow */
-#define DMA_INTR_ENA_OVE 0x00000010 /* Receive Overflow */
-#define DMA_INTR_ENA_TJE 0x00000008 /* Transmit Jabber */
-#define DMA_INTR_ENA_TUE 0x00000004 /* Transmit Buffer Unavail */
-#define DMA_INTR_ENA_TSE 0x00000002 /* Transmit Stopped */
-#define DMA_INTR_ENA_TIE 0x00000001 /* Transmit Interrupt */
-
-#define DMA_INTR_NORMAL (DMA_INTR_ENA_NIE | DMA_INTR_ENA_RIE | \
- DMA_INTR_ENA_TUE | DMA_INTR_ENA_TIE)
-
-#define DMA_INTR_ABNORMAL (DMA_INTR_ENA_AIE | DMA_INTR_ENA_FBE | \
- DMA_INTR_ENA_RWE | DMA_INTR_ENA_RSE | \
- DMA_INTR_ENA_RUE | DMA_INTR_ENA_UNE | \
- DMA_INTR_ENA_OVE | DMA_INTR_ENA_TJE | \
- DMA_INTR_ENA_TSE)
-
-/* DMA default interrupt mask */
-#define DMA_INTR_DEFAULT_MASK (DMA_INTR_NORMAL | DMA_INTR_ABNORMAL)
-
-/* DMA Status register defines */
-#define DMA_STATUS_GMI 0x08000000 /* MMC interrupt */
-#define DMA_STATUS_GLI 0x04000000 /* GMAC Line interface int */
-#define DMA_STATUS_EB_MASK 0x00380000 /* Error Bits Mask */
-#define DMA_STATUS_EB_TX_ABORT 0x00080000 /* Error Bits - TX Abort */
-#define DMA_STATUS_EB_RX_ABORT 0x00100000 /* Error Bits - RX Abort */
-#define DMA_STATUS_TS_MASK 0x00700000 /* Transmit Process State */
-#define DMA_STATUS_TS_SHIFT 20
-#define DMA_STATUS_RS_MASK 0x000e0000 /* Receive Process State */
-#define DMA_STATUS_RS_SHIFT 17
-#define DMA_STATUS_NIS 0x00010000 /* Normal Interrupt Summary */
-#define DMA_STATUS_AIS 0x00008000 /* Abnormal Interrupt Summary */
-#define DMA_STATUS_ERI 0x00004000 /* Early Receive Interrupt */
-#define DMA_STATUS_FBI 0x00002000 /* Fatal Bus Error Interrupt */
-#define DMA_STATUS_ETI 0x00000400 /* Early Transmit Interrupt */
-#define DMA_STATUS_RWT 0x00000200 /* Receive Watchdog Timeout */
-#define DMA_STATUS_RPS 0x00000100 /* Receive Process Stopped */
-#define DMA_STATUS_RU 0x00000080 /* Receive Buffer Unavailable */
-#define DMA_STATUS_RI 0x00000040 /* Receive Interrupt */
-#define DMA_STATUS_UNF 0x00000020 /* Transmit Underflow */
-#define DMA_STATUS_OVF 0x00000010 /* Receive Overflow */
-#define DMA_STATUS_TJT 0x00000008 /* Transmit Jabber Timeout */
-#define DMA_STATUS_TU 0x00000004 /* Transmit Buffer Unavail */
-#define DMA_STATUS_TPS 0x00000002 /* Transmit Process Stopped */
-#define DMA_STATUS_TI 0x00000001 /* Transmit Interrupt */
-
-/* Common MAC defines */
-#define MAC_ENABLE_TX 0x00000008 /* Transmitter Enable */
-#define MAC_ENABLE_RX 0x00000004 /* Receiver Enable */
-
-/* XGMAC Operation Mode Register */
-#define XGMAC_OMR_TSF 0x00200000 /* TX FIFO Store and Forward */
-#define XGMAC_OMR_FTF 0x00100000 /* Flush Transmit FIFO */
-#define XGMAC_OMR_TTC 0x00020000 /* Transmit Threshold Ctrl */
-#define XGMAC_OMR_TTC_MASK 0x00030000
-#define XGMAC_OMR_RFD 0x00006000 /* FC Deactivation Threshold */
-#define XGMAC_OMR_RFD_MASK 0x00007000 /* FC Deact Threshold MASK */
-#define XGMAC_OMR_RFA 0x00000600 /* FC Activation Threshold */
-#define XGMAC_OMR_RFA_MASK 0x00000E00 /* FC Act Threshold MASK */
-#define XGMAC_OMR_EFC 0x00000100 /* Enable Hardware FC */
-#define XGMAC_OMR_FEF 0x00000080 /* Forward Error Frames */
-#define XGMAC_OMR_DT 0x00000040 /* Drop TCP/IP csum Errors */
-#define XGMAC_OMR_RSF 0x00000020 /* RX FIFO Store and Forward */
-#define XGMAC_OMR_RTC_256 0x00000018 /* RX Threshold Ctrl */
-#define XGMAC_OMR_RTC_MASK 0x00000018 /* RX Threshold Ctrl MASK */
-
-/* XGMAC HW Features Register */
-#define DMA_HW_FEAT_TXCOESEL 0x00010000 /* TX Checksum offload */
-
-#define XGMAC_MMC_CTRL_CNT_FRZ 0x00000008
-
-/* XGMAC Descriptor Defines */
-#define MAX_DESC_BUF_SZ (0x2000 - 8)
-
-#define RXDESC_EXT_STATUS 0x00000001
-#define RXDESC_CRC_ERR 0x00000002
-#define RXDESC_RX_ERR 0x00000008
-#define RXDESC_RX_WDOG 0x00000010
-#define RXDESC_FRAME_TYPE 0x00000020
-#define RXDESC_GIANT_FRAME 0x00000080
-#define RXDESC_LAST_SEG 0x00000100
-#define RXDESC_FIRST_SEG 0x00000200
-#define RXDESC_VLAN_FRAME 0x00000400
-#define RXDESC_OVERFLOW_ERR 0x00000800
-#define RXDESC_LENGTH_ERR 0x00001000
-#define RXDESC_SA_FILTER_FAIL 0x00002000
-#define RXDESC_DESCRIPTOR_ERR 0x00004000
-#define RXDESC_ERROR_SUMMARY 0x00008000
-#define RXDESC_FRAME_LEN_OFFSET 16
-#define RXDESC_FRAME_LEN_MASK 0x3fff0000
-#define RXDESC_DA_FILTER_FAIL 0x40000000
-
-#define RXDESC1_END_RING 0x00008000
-
-#define RXDESC_IP_PAYLOAD_MASK 0x00000003
-#define RXDESC_IP_PAYLOAD_UDP 0x00000001
-#define RXDESC_IP_PAYLOAD_TCP 0x00000002
-#define RXDESC_IP_PAYLOAD_ICMP 0x00000003
-#define RXDESC_IP_HEADER_ERR 0x00000008
-#define RXDESC_IP_PAYLOAD_ERR 0x00000010
-#define RXDESC_IPV4_PACKET 0x00000040
-#define RXDESC_IPV6_PACKET 0x00000080
-#define TXDESC_UNDERFLOW_ERR 0x00000001
-#define TXDESC_JABBER_TIMEOUT 0x00000002
-#define TXDESC_LOCAL_FAULT 0x00000004
-#define TXDESC_REMOTE_FAULT 0x00000008
-#define TXDESC_VLAN_FRAME 0x00000010
-#define TXDESC_FRAME_FLUSHED 0x00000020
-#define TXDESC_IP_HEADER_ERR 0x00000040
-#define TXDESC_PAYLOAD_CSUM_ERR 0x00000080
-#define TXDESC_ERROR_SUMMARY 0x00008000
-#define TXDESC_SA_CTRL_INSERT 0x00040000
-#define TXDESC_SA_CTRL_REPLACE 0x00080000
-#define TXDESC_2ND_ADDR_CHAINED 0x00100000
-#define TXDESC_END_RING 0x00200000
-#define TXDESC_CSUM_IP 0x00400000
-#define TXDESC_CSUM_IP_PAYLD 0x00800000
-#define TXDESC_CSUM_ALL 0x00C00000
-#define TXDESC_CRC_EN_REPLACE 0x01000000
-#define TXDESC_CRC_EN_APPEND 0x02000000
-#define TXDESC_DISABLE_PAD 0x04000000
-#define TXDESC_FIRST_SEG 0x10000000
-#define TXDESC_LAST_SEG 0x20000000
-#define TXDESC_INTERRUPT 0x40000000
-
-#define DESC_OWN 0x80000000
-#define DESC_BUFFER1_SZ_MASK 0x00001fff
-#define DESC_BUFFER2_SZ_MASK 0x1fff0000
-#define DESC_BUFFER2_SZ_OFFSET 16
-
-struct xgmac_dma_desc {
- __le32 flags;
- __le32 buf_size;
- __le32 buf1_addr; /* Buffer 1 Address Pointer */
- __le32 buf2_addr; /* Buffer 2 Address Pointer */
- __le32 ext_status;
- __le32 res[3];
-};
-
-struct xgmac_extra_stats {
- /* Transmit errors */
- unsigned long tx_jabber;
- unsigned long tx_frame_flushed;
- unsigned long tx_payload_error;
- unsigned long tx_ip_header_error;
- unsigned long tx_local_fault;
- unsigned long tx_remote_fault;
- /* Receive errors */
- unsigned long rx_watchdog;
- unsigned long rx_da_filter_fail;
- unsigned long rx_payload_error;
- unsigned long rx_ip_header_error;
- /* Tx/Rx IRQ errors */
- unsigned long tx_process_stopped;
- unsigned long rx_buf_unav;
- unsigned long rx_process_stopped;
- unsigned long tx_early;
- unsigned long fatal_bus_error;
-};
-
-struct xgmac_priv {
- struct xgmac_dma_desc *dma_rx;
- struct sk_buff **rx_skbuff;
- unsigned int rx_tail;
- unsigned int rx_head;
-
- struct xgmac_dma_desc *dma_tx;
- struct sk_buff **tx_skbuff;
- unsigned int tx_head;
- unsigned int tx_tail;
- int tx_irq_cnt;
-
- void __iomem *base;
- unsigned int dma_buf_sz;
- dma_addr_t dma_rx_phy;
- dma_addr_t dma_tx_phy;
-
- struct net_device *dev;
- struct device *device;
- struct napi_struct napi;
-
- int max_macs;
- struct xgmac_extra_stats xstats;
-
- spinlock_t stats_lock;
- int pmt_irq;
- char rx_pause;
- char tx_pause;
- int wolopts;
- struct work_struct tx_timeout_work;
-};
-
-/* XGMAC Configuration Settings */
-#define XGMAC_MAX_MTU 9000
-#define PAUSE_TIME 0x400
-
-#define DMA_RX_RING_SZ 256
-#define DMA_TX_RING_SZ 128
-/* minimum number of free TX descriptors required to wake up TX process */
-#define TX_THRESH (DMA_TX_RING_SZ/4)
-
-/* DMA descriptor ring helpers */
-#define dma_ring_incr(n, s) (((n) + 1) & ((s) - 1))
-#define dma_ring_space(h, t, s) CIRC_SPACE(h, t, s)
-#define dma_ring_cnt(h, t, s) CIRC_CNT(h, t, s)
-
-#define tx_dma_ring_space(p) \
- dma_ring_space((p)->tx_head, (p)->tx_tail, DMA_TX_RING_SZ)
-
-/* XGMAC Descriptor Access Helpers */
-static inline void desc_set_buf_len(struct xgmac_dma_desc *p, u32 buf_sz)
-{
- if (buf_sz > MAX_DESC_BUF_SZ)
- p->buf_size = cpu_to_le32(MAX_DESC_BUF_SZ |
- (buf_sz - MAX_DESC_BUF_SZ) << DESC_BUFFER2_SZ_OFFSET);
- else
- p->buf_size = cpu_to_le32(buf_sz);
-}
-
-static inline int desc_get_buf_len(struct xgmac_dma_desc *p)
-{
- u32 len = le32_to_cpu(p->buf_size);
- return (len & DESC_BUFFER1_SZ_MASK) +
- ((len & DESC_BUFFER2_SZ_MASK) >> DESC_BUFFER2_SZ_OFFSET);
-}
-
-static inline void desc_init_rx_desc(struct xgmac_dma_desc *p, int ring_size,
- int buf_sz)
-{
- struct xgmac_dma_desc *end = p + ring_size - 1;
-
- memset(p, 0, sizeof(*p) * ring_size);
-
- for (; p <= end; p++)
- desc_set_buf_len(p, buf_sz);
-
- end->buf_size |= cpu_to_le32(RXDESC1_END_RING);
-}
-
-static inline void desc_init_tx_desc(struct xgmac_dma_desc *p, u32 ring_size)
-{
- memset(p, 0, sizeof(*p) * ring_size);
- p[ring_size - 1].flags = cpu_to_le32(TXDESC_END_RING);
-}
-
-static inline int desc_get_owner(struct xgmac_dma_desc *p)
-{
- return le32_to_cpu(p->flags) & DESC_OWN;
-}
-
-static inline void desc_set_rx_owner(struct xgmac_dma_desc *p)
-{
- /* Clear all fields and set the owner */
- p->flags = cpu_to_le32(DESC_OWN);
-}
-
-static inline void desc_set_tx_owner(struct xgmac_dma_desc *p, u32 flags)
-{
- u32 tmpflags = le32_to_cpu(p->flags);
- tmpflags &= TXDESC_END_RING;
- tmpflags |= flags | DESC_OWN;
- p->flags = cpu_to_le32(tmpflags);
-}
-
-static inline void desc_clear_tx_owner(struct xgmac_dma_desc *p)
-{
- u32 tmpflags = le32_to_cpu(p->flags);
- tmpflags &= TXDESC_END_RING;
- p->flags = cpu_to_le32(tmpflags);
-}
-
-static inline int desc_get_tx_ls(struct xgmac_dma_desc *p)
-{
- return le32_to_cpu(p->flags) & TXDESC_LAST_SEG;
-}
-
-static inline int desc_get_tx_fs(struct xgmac_dma_desc *p)
-{
- return le32_to_cpu(p->flags) & TXDESC_FIRST_SEG;
-}
-
-static inline u32 desc_get_buf_addr(struct xgmac_dma_desc *p)
-{
- return le32_to_cpu(p->buf1_addr);
-}
-
-static inline void desc_set_buf_addr(struct xgmac_dma_desc *p,
- u32 paddr, int len)
-{
- p->buf1_addr = cpu_to_le32(paddr);
- if (len > MAX_DESC_BUF_SZ)
- p->buf2_addr = cpu_to_le32(paddr + MAX_DESC_BUF_SZ);
-}
-
-static inline void desc_set_buf_addr_and_size(struct xgmac_dma_desc *p,
- u32 paddr, int len)
-{
- desc_set_buf_len(p, len);
- desc_set_buf_addr(p, paddr, len);
-}
-
-static inline int desc_get_rx_frame_len(struct xgmac_dma_desc *p)
-{
- u32 data = le32_to_cpu(p->flags);
- u32 len = (data & RXDESC_FRAME_LEN_MASK) >> RXDESC_FRAME_LEN_OFFSET;
- if (data & RXDESC_FRAME_TYPE)
- len -= ETH_FCS_LEN;
-
- return len;
-}
-
-static void xgmac_dma_flush_tx_fifo(void __iomem *ioaddr)
-{
- int timeout = 1000;
- u32 reg = readl(ioaddr + XGMAC_OMR);
- writel(reg | XGMAC_OMR_FTF, ioaddr + XGMAC_OMR);
-
- while ((timeout-- > 0) && readl(ioaddr + XGMAC_OMR) & XGMAC_OMR_FTF)
- udelay(1);
-}
-
-static int desc_get_tx_status(struct xgmac_priv *priv, struct xgmac_dma_desc *p)
-{
- struct xgmac_extra_stats *x = &priv->xstats;
- u32 status = le32_to_cpu(p->flags);
-
- if (!(status & TXDESC_ERROR_SUMMARY))
- return 0;
-
- netdev_dbg(priv->dev, "tx desc error = 0x%08x\n", status);
- if (status & TXDESC_JABBER_TIMEOUT)
- x->tx_jabber++;
- if (status & TXDESC_FRAME_FLUSHED)
- x->tx_frame_flushed++;
- if (status & TXDESC_UNDERFLOW_ERR)
- xgmac_dma_flush_tx_fifo(priv->base);
- if (status & TXDESC_IP_HEADER_ERR)
- x->tx_ip_header_error++;
- if (status & TXDESC_LOCAL_FAULT)
- x->tx_local_fault++;
- if (status & TXDESC_REMOTE_FAULT)
- x->tx_remote_fault++;
- if (status & TXDESC_PAYLOAD_CSUM_ERR)
- x->tx_payload_error++;
-
- return -1;
-}
-
-static int desc_get_rx_status(struct xgmac_priv *priv, struct xgmac_dma_desc *p)
-{
- struct xgmac_extra_stats *x = &priv->xstats;
- int ret = CHECKSUM_UNNECESSARY;
- u32 status = le32_to_cpu(p->flags);
- u32 ext_status = le32_to_cpu(p->ext_status);
-
- if (status & RXDESC_DA_FILTER_FAIL) {
- netdev_dbg(priv->dev, "XGMAC RX : Dest Address filter fail\n");
- x->rx_da_filter_fail++;
- return -1;
- }
-
- /* All frames should fit into a single buffer */
- if (!(status & RXDESC_FIRST_SEG) || !(status & RXDESC_LAST_SEG))
- return -1;
-
- /* Check if packet has checksum already */
- if ((status & RXDESC_FRAME_TYPE) && (status & RXDESC_EXT_STATUS) &&
- !(ext_status & RXDESC_IP_PAYLOAD_MASK))
- ret = CHECKSUM_NONE;
-
- netdev_dbg(priv->dev, "rx status - frame type=%d, csum = %d, ext stat %08x\n",
- (status & RXDESC_FRAME_TYPE) ? 1 : 0, ret, ext_status);
-
- if (!(status & RXDESC_ERROR_SUMMARY))
- return ret;
-
- /* Handle any errors */
- if (status & (RXDESC_DESCRIPTOR_ERR | RXDESC_OVERFLOW_ERR |
- RXDESC_GIANT_FRAME | RXDESC_LENGTH_ERR | RXDESC_CRC_ERR))
- return -1;
-
- if (status & RXDESC_EXT_STATUS) {
- if (ext_status & RXDESC_IP_HEADER_ERR)
- x->rx_ip_header_error++;
- if (ext_status & RXDESC_IP_PAYLOAD_ERR)
- x->rx_payload_error++;
- netdev_dbg(priv->dev, "IP checksum error - stat %08x\n",
- ext_status);
- return CHECKSUM_NONE;
- }
-
- return ret;
-}
-
-static inline void xgmac_mac_enable(void __iomem *ioaddr)
-{
- u32 value = readl(ioaddr + XGMAC_CONTROL);
- value |= MAC_ENABLE_RX | MAC_ENABLE_TX;
- writel(value, ioaddr + XGMAC_CONTROL);
-
- value = readl(ioaddr + XGMAC_DMA_CONTROL);
- value |= DMA_CONTROL_ST | DMA_CONTROL_SR;
- writel(value, ioaddr + XGMAC_DMA_CONTROL);
-}
-
-static inline void xgmac_mac_disable(void __iomem *ioaddr)
-{
- u32 value = readl(ioaddr + XGMAC_DMA_CONTROL);
- value &= ~(DMA_CONTROL_ST | DMA_CONTROL_SR);
- writel(value, ioaddr + XGMAC_DMA_CONTROL);
-
- value = readl(ioaddr + XGMAC_CONTROL);
- value &= ~(MAC_ENABLE_TX | MAC_ENABLE_RX);
- writel(value, ioaddr + XGMAC_CONTROL);
-}
-
-static void xgmac_set_mac_addr(void __iomem *ioaddr, unsigned char *addr,
- int num)
-{
- u32 data;
-
- if (addr) {
- data = (addr[5] << 8) | addr[4] | (num ? XGMAC_ADDR_AE : 0);
- writel(data, ioaddr + XGMAC_ADDR_HIGH(num));
- data = (addr[3] << 24) | (addr[2] << 16) | (addr[1] << 8) | addr[0];
- writel(data, ioaddr + XGMAC_ADDR_LOW(num));
- } else {
- writel(0, ioaddr + XGMAC_ADDR_HIGH(num));
- writel(0, ioaddr + XGMAC_ADDR_LOW(num));
- }
-}
-
-static void xgmac_get_mac_addr(void __iomem *ioaddr, unsigned char *addr,
- int num)
-{
- u32 hi_addr, lo_addr;
-
- /* Read the MAC address from the hardware */
- hi_addr = readl(ioaddr + XGMAC_ADDR_HIGH(num));
- lo_addr = readl(ioaddr + XGMAC_ADDR_LOW(num));
-
- /* Extract the MAC address from the high and low words */
- addr[0] = lo_addr & 0xff;
- addr[1] = (lo_addr >> 8) & 0xff;
- addr[2] = (lo_addr >> 16) & 0xff;
- addr[3] = (lo_addr >> 24) & 0xff;
- addr[4] = hi_addr & 0xff;
- addr[5] = (hi_addr >> 8) & 0xff;
-}
-
-static int xgmac_set_flow_ctrl(struct xgmac_priv *priv, int rx, int tx)
-{
- u32 reg;
- unsigned int flow = 0;
-
- priv->rx_pause = rx;
- priv->tx_pause = tx;
-
- if (rx || tx) {
- if (rx)
- flow |= XGMAC_FLOW_CTRL_RFE;
- if (tx)
- flow |= XGMAC_FLOW_CTRL_TFE;
-
- flow |= XGMAC_FLOW_CTRL_PLT | XGMAC_FLOW_CTRL_UP;
- flow |= (PAUSE_TIME << XGMAC_FLOW_CTRL_PT_SHIFT);
-
- writel(flow, priv->base + XGMAC_FLOW_CTRL);
-
- reg = readl(priv->base + XGMAC_OMR);
- reg |= XGMAC_OMR_EFC;
- writel(reg, priv->base + XGMAC_OMR);
- } else {
- writel(0, priv->base + XGMAC_FLOW_CTRL);
-
- reg = readl(priv->base + XGMAC_OMR);
- reg &= ~XGMAC_OMR_EFC;
- writel(reg, priv->base + XGMAC_OMR);
- }
-
- return 0;
-}
-
-static void xgmac_rx_refill(struct xgmac_priv *priv)
-{
- struct xgmac_dma_desc *p;
- dma_addr_t paddr;
- int bufsz = priv->dev->mtu + ETH_HLEN + ETH_FCS_LEN;
-
- while (dma_ring_space(priv->rx_head, priv->rx_tail, DMA_RX_RING_SZ) > 1) {
- int entry = priv->rx_head;
- struct sk_buff *skb;
-
- p = priv->dma_rx + entry;
-
- if (priv->rx_skbuff[entry] == NULL) {
- skb = netdev_alloc_skb_ip_align(priv->dev, bufsz);
- if (unlikely(skb == NULL))
- break;
-
- paddr = dma_map_single(priv->device, skb->data,
- priv->dma_buf_sz - NET_IP_ALIGN,
- DMA_FROM_DEVICE);
- if (dma_mapping_error(priv->device, paddr)) {
- dev_kfree_skb_any(skb);
- break;
- }
- priv->rx_skbuff[entry] = skb;
- desc_set_buf_addr(p, paddr, priv->dma_buf_sz);
- }
-
- netdev_dbg(priv->dev, "rx ring: head %d, tail %d\n",
- priv->rx_head, priv->rx_tail);
-
- priv->rx_head = dma_ring_incr(priv->rx_head, DMA_RX_RING_SZ);
- desc_set_rx_owner(p);
- }
-}
-
-/**
- * init_xgmac_dma_desc_rings - init the RX/TX descriptor rings
- * @dev: net device structure
- * Description: this function initializes the DMA RX/TX descriptors
- * and allocates the socket buffers.
- */
-static int xgmac_dma_desc_rings_init(struct net_device *dev)
-{
- struct xgmac_priv *priv = netdev_priv(dev);
- unsigned int bfsize;
-
- /* Set the Buffer size according to the MTU;
- * The total buffer size including any IP offset must be a multiple
- * of 8 bytes.
- */
- bfsize = ALIGN(dev->mtu + ETH_HLEN + ETH_FCS_LEN + NET_IP_ALIGN, 8);
-
- netdev_dbg(priv->dev, "mtu [%d] bfsize [%d]\n", dev->mtu, bfsize);
-
- priv->rx_skbuff = kcalloc(DMA_RX_RING_SZ, sizeof(struct sk_buff *),
- GFP_KERNEL);
- if (!priv->rx_skbuff)
- return -ENOMEM;
-
- priv->dma_rx = dma_alloc_coherent(priv->device,
- DMA_RX_RING_SZ *
- sizeof(struct xgmac_dma_desc),
- &priv->dma_rx_phy,
- GFP_KERNEL);
- if (!priv->dma_rx)
- goto err_dma_rx;
-
- priv->tx_skbuff = kcalloc(DMA_TX_RING_SZ, sizeof(struct sk_buff *),
- GFP_KERNEL);
- if (!priv->tx_skbuff)
- goto err_tx_skb;
-
- priv->dma_tx = dma_alloc_coherent(priv->device,
- DMA_TX_RING_SZ *
- sizeof(struct xgmac_dma_desc),
- &priv->dma_tx_phy,
- GFP_KERNEL);
- if (!priv->dma_tx)
- goto err_dma_tx;
-
- netdev_dbg(priv->dev, "DMA desc rings: virt addr (Rx %p, "
- "Tx %p)\n\tDMA phy addr (Rx 0x%08x, Tx 0x%08x)\n",
- priv->dma_rx, priv->dma_tx,
- (unsigned int)priv->dma_rx_phy, (unsigned int)priv->dma_tx_phy);
-
- priv->rx_tail = 0;
- priv->rx_head = 0;
- priv->dma_buf_sz = bfsize;
- desc_init_rx_desc(priv->dma_rx, DMA_RX_RING_SZ, priv->dma_buf_sz);
- xgmac_rx_refill(priv);
-
- priv->tx_tail = 0;
- priv->tx_head = 0;
- desc_init_tx_desc(priv->dma_tx, DMA_TX_RING_SZ);
-
- writel(priv->dma_tx_phy, priv->base + XGMAC_DMA_TX_BASE_ADDR);
- writel(priv->dma_rx_phy, priv->base + XGMAC_DMA_RX_BASE_ADDR);
-
- return 0;
-
-err_dma_tx:
- kfree(priv->tx_skbuff);
-err_tx_skb:
- dma_free_coherent(priv->device,
- DMA_RX_RING_SZ * sizeof(struct xgmac_dma_desc),
- priv->dma_rx, priv->dma_rx_phy);
-err_dma_rx:
- kfree(priv->rx_skbuff);
- return -ENOMEM;
-}
-
-static void xgmac_free_rx_skbufs(struct xgmac_priv *priv)
-{
- int i;
- struct xgmac_dma_desc *p;
-
- if (!priv->rx_skbuff)
- return;
-
- for (i = 0; i < DMA_RX_RING_SZ; i++) {
- struct sk_buff *skb = priv->rx_skbuff[i];
- if (skb == NULL)
- continue;
-
- p = priv->dma_rx + i;
- dma_unmap_single(priv->device, desc_get_buf_addr(p),
- priv->dma_buf_sz - NET_IP_ALIGN, DMA_FROM_DEVICE);
- dev_kfree_skb_any(skb);
- priv->rx_skbuff[i] = NULL;
- }
-}
-
-static void xgmac_free_tx_skbufs(struct xgmac_priv *priv)
-{
- int i;
- struct xgmac_dma_desc *p;
-
- if (!priv->tx_skbuff)
- return;
-
- for (i = 0; i < DMA_TX_RING_SZ; i++) {
- if (priv->tx_skbuff[i] == NULL)
- continue;
-
- p = priv->dma_tx + i;
- if (desc_get_tx_fs(p))
- dma_unmap_single(priv->device, desc_get_buf_addr(p),
- desc_get_buf_len(p), DMA_TO_DEVICE);
- else
- dma_unmap_page(priv->device, desc_get_buf_addr(p),
- desc_get_buf_len(p), DMA_TO_DEVICE);
-
- if (desc_get_tx_ls(p))
- dev_kfree_skb_any(priv->tx_skbuff[i]);
- priv->tx_skbuff[i] = NULL;
- }
-}
-
-static void xgmac_free_dma_desc_rings(struct xgmac_priv *priv)
-{
- /* Release the DMA TX/RX socket buffers */
- xgmac_free_rx_skbufs(priv);
- xgmac_free_tx_skbufs(priv);
-
- /* Free the consistent memory allocated for descriptor rings */
- if (priv->dma_tx) {
- dma_free_coherent(priv->device,
- DMA_TX_RING_SZ * sizeof(struct xgmac_dma_desc),
- priv->dma_tx, priv->dma_tx_phy);
- priv->dma_tx = NULL;
- }
- if (priv->dma_rx) {
- dma_free_coherent(priv->device,
- DMA_RX_RING_SZ * sizeof(struct xgmac_dma_desc),
- priv->dma_rx, priv->dma_rx_phy);
- priv->dma_rx = NULL;
- }
- kfree(priv->rx_skbuff);
- priv->rx_skbuff = NULL;
- kfree(priv->tx_skbuff);
- priv->tx_skbuff = NULL;
-}
-
-/**
- * xgmac_tx:
- * @priv: private driver structure
- * Description: it reclaims resources after transmission completes.
- */
-static void xgmac_tx_complete(struct xgmac_priv *priv)
-{
- while (dma_ring_cnt(priv->tx_head, priv->tx_tail, DMA_TX_RING_SZ)) {
- unsigned int entry = priv->tx_tail;
- struct sk_buff *skb = priv->tx_skbuff[entry];
- struct xgmac_dma_desc *p = priv->dma_tx + entry;
-
- /* Check if the descriptor is owned by the DMA. */
- if (desc_get_owner(p))
- break;
-
- netdev_dbg(priv->dev, "tx ring: curr %d, dirty %d\n",
- priv->tx_head, priv->tx_tail);
-
- if (desc_get_tx_fs(p))
- dma_unmap_single(priv->device, desc_get_buf_addr(p),
- desc_get_buf_len(p), DMA_TO_DEVICE);
- else
- dma_unmap_page(priv->device, desc_get_buf_addr(p),
- desc_get_buf_len(p), DMA_TO_DEVICE);
-
- /* Check tx error on the last segment */
- if (desc_get_tx_ls(p)) {
- desc_get_tx_status(priv, p);
- dev_consume_skb_any(skb);
- }
-
- priv->tx_skbuff[entry] = NULL;
- priv->tx_tail = dma_ring_incr(entry, DMA_TX_RING_SZ);
- }
-
- /* Ensure tx_tail is visible to xgmac_xmit */
- smp_mb();
- if (unlikely(netif_queue_stopped(priv->dev) &&
- (tx_dma_ring_space(priv) > MAX_SKB_FRAGS)))
- netif_wake_queue(priv->dev);
-}
-
-static void xgmac_tx_timeout_work(struct work_struct *work)
-{
- u32 reg, value;
- struct xgmac_priv *priv =
- container_of(work, struct xgmac_priv, tx_timeout_work);
-
- napi_disable(&priv->napi);
-
- writel(0, priv->base + XGMAC_DMA_INTR_ENA);
-
- netif_tx_lock(priv->dev);
-
- reg = readl(priv->base + XGMAC_DMA_CONTROL);
- writel(reg & ~DMA_CONTROL_ST, priv->base + XGMAC_DMA_CONTROL);
- do {
- value = readl(priv->base + XGMAC_DMA_STATUS) & 0x700000;
- } while (value && (value != 0x600000));
-
- xgmac_free_tx_skbufs(priv);
- desc_init_tx_desc(priv->dma_tx, DMA_TX_RING_SZ);
- priv->tx_tail = 0;
- priv->tx_head = 0;
- writel(priv->dma_tx_phy, priv->base + XGMAC_DMA_TX_BASE_ADDR);
- writel(reg | DMA_CONTROL_ST, priv->base + XGMAC_DMA_CONTROL);
-
- writel(DMA_STATUS_TU | DMA_STATUS_TPS | DMA_STATUS_NIS | DMA_STATUS_AIS,
- priv->base + XGMAC_DMA_STATUS);
-
- netif_tx_unlock(priv->dev);
- netif_wake_queue(priv->dev);
-
- napi_enable(&priv->napi);
-
- /* Enable interrupts */
- writel(DMA_INTR_DEFAULT_MASK, priv->base + XGMAC_DMA_STATUS);
- writel(DMA_INTR_DEFAULT_MASK, priv->base + XGMAC_DMA_INTR_ENA);
-}
-
-static int xgmac_hw_init(struct net_device *dev)
-{
- u32 value, ctrl;
- int limit;
- struct xgmac_priv *priv = netdev_priv(dev);
- void __iomem *ioaddr = priv->base;
-
- /* Save the ctrl register value */
- ctrl = readl(ioaddr + XGMAC_CONTROL) & XGMAC_CONTROL_SPD_MASK;
-
- /* SW reset */
- value = DMA_BUS_MODE_SFT_RESET;
- writel(value, ioaddr + XGMAC_DMA_BUS_MODE);
- limit = 15000;
- while (limit-- &&
- (readl(ioaddr + XGMAC_DMA_BUS_MODE) & DMA_BUS_MODE_SFT_RESET))
- cpu_relax();
- if (limit < 0)
- return -EBUSY;
-
- value = (0x10 << DMA_BUS_MODE_PBL_SHIFT) |
- (0x10 << DMA_BUS_MODE_RPBL_SHIFT) |
- DMA_BUS_MODE_FB | DMA_BUS_MODE_ATDS | DMA_BUS_MODE_AAL;
- writel(value, ioaddr + XGMAC_DMA_BUS_MODE);
-
- writel(0, ioaddr + XGMAC_DMA_INTR_ENA);
-
- /* Mask power mgt interrupt */
- writel(XGMAC_INT_STAT_PMTIM, ioaddr + XGMAC_INT_STAT);
-
- /* XGMAC requires AXI bus init. This is a 'magic number' for now */
- writel(0x0077000E, ioaddr + XGMAC_DMA_AXI_BUS);
-
- ctrl |= XGMAC_CONTROL_DDIC | XGMAC_CONTROL_JE | XGMAC_CONTROL_ACS |
- XGMAC_CONTROL_CAR;
- if (dev->features & NETIF_F_RXCSUM)
- ctrl |= XGMAC_CONTROL_IPC;
- writel(ctrl, ioaddr + XGMAC_CONTROL);
-
- writel(DMA_CONTROL_OSF, ioaddr + XGMAC_DMA_CONTROL);
-
- /* Set the HW DMA mode and the COE */
- writel(XGMAC_OMR_TSF | XGMAC_OMR_RFD | XGMAC_OMR_RFA |
- XGMAC_OMR_RTC_256,
- ioaddr + XGMAC_OMR);
-
- /* Reset the MMC counters */
- writel(1, ioaddr + XGMAC_MMC_CTRL);
- return 0;
-}
-
-/**
- * xgmac_open - open entry point of the driver
- * @dev : pointer to the device structure.
- * Description:
- * This function is the open entry point of the driver.
- * Return value:
- * 0 on success and an appropriate (-)ve integer as defined in errno.h
- * file on failure.
- */
-static int xgmac_open(struct net_device *dev)
-{
- int ret;
- struct xgmac_priv *priv = netdev_priv(dev);
- void __iomem *ioaddr = priv->base;
-
- /* Check that the MAC address is valid. If its not, refuse
- * to bring the device up. The user must specify an
- * address using the following linux command:
- * ifconfig eth0 hw ether xx:xx:xx:xx:xx:xx */
- if (!is_valid_ether_addr(dev->dev_addr)) {
- eth_hw_addr_random(dev);
- netdev_dbg(priv->dev, "generated random MAC address %pM\n",
- dev->dev_addr);
- }
-
- memset(&priv->xstats, 0, sizeof(struct xgmac_extra_stats));
-
- /* Initialize the XGMAC and descriptors */
- xgmac_hw_init(dev);
- xgmac_set_mac_addr(ioaddr, dev->dev_addr, 0);
- xgmac_set_flow_ctrl(priv, priv->rx_pause, priv->tx_pause);
-
- ret = xgmac_dma_desc_rings_init(dev);
- if (ret < 0)
- return ret;
-
- /* Enable the MAC Rx/Tx */
- xgmac_mac_enable(ioaddr);
-
- napi_enable(&priv->napi);
- netif_start_queue(dev);
-
- /* Enable interrupts */
- writel(DMA_INTR_DEFAULT_MASK, ioaddr + XGMAC_DMA_STATUS);
- writel(DMA_INTR_DEFAULT_MASK, ioaddr + XGMAC_DMA_INTR_ENA);
-
- return 0;
-}
-
-/**
- * xgmac_release - close entry point of the driver
- * @dev : device pointer.
- * Description:
- * This is the stop entry point of the driver.
- */
-static int xgmac_stop(struct net_device *dev)
-{
- struct xgmac_priv *priv = netdev_priv(dev);
-
- if (readl(priv->base + XGMAC_DMA_INTR_ENA))
- napi_disable(&priv->napi);
-
- writel(0, priv->base + XGMAC_DMA_INTR_ENA);
-
- netif_tx_disable(dev);
-
- /* Disable the MAC core */
- xgmac_mac_disable(priv->base);
-
- /* Release and free the Rx/Tx resources */
- xgmac_free_dma_desc_rings(priv);
-
- return 0;
-}
-
-/**
- * xgmac_xmit:
- * @skb : the socket buffer
- * @dev : device pointer
- * Description : Tx entry point of the driver.
- */
-static netdev_tx_t xgmac_xmit(struct sk_buff *skb, struct net_device *dev)
-{
- struct xgmac_priv *priv = netdev_priv(dev);
- unsigned int entry;
- int i;
- u32 irq_flag;
- int nfrags = skb_shinfo(skb)->nr_frags;
- struct xgmac_dma_desc *desc, *first;
- unsigned int desc_flags;
- unsigned int len;
- dma_addr_t paddr;
-
- priv->tx_irq_cnt = (priv->tx_irq_cnt + 1) & (DMA_TX_RING_SZ/4 - 1);
- irq_flag = priv->tx_irq_cnt ? 0 : TXDESC_INTERRUPT;
-
- desc_flags = (skb->ip_summed == CHECKSUM_PARTIAL) ?
- TXDESC_CSUM_ALL : 0;
- entry = priv->tx_head;
- desc = priv->dma_tx + entry;
- first = desc;
-
- len = skb_headlen(skb);
- paddr = dma_map_single(priv->device, skb->data, len, DMA_TO_DEVICE);
- if (dma_mapping_error(priv->device, paddr)) {
- dev_kfree_skb_any(skb);
- return NETDEV_TX_OK;
- }
- priv->tx_skbuff[entry] = skb;
- desc_set_buf_addr_and_size(desc, paddr, len);
-
- for (i = 0; i < nfrags; i++) {
- skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
-
- len = skb_frag_size(frag);
-
- paddr = skb_frag_dma_map(priv->device, frag, 0, len,
- DMA_TO_DEVICE);
- if (dma_mapping_error(priv->device, paddr))
- goto dma_err;
-
- entry = dma_ring_incr(entry, DMA_TX_RING_SZ);
- desc = priv->dma_tx + entry;
- priv->tx_skbuff[entry] = skb;
-
- desc_set_buf_addr_and_size(desc, paddr, len);
- if (i < (nfrags - 1))
- desc_set_tx_owner(desc, desc_flags);
- }
-
- /* Interrupt on completition only for the latest segment */
- if (desc != first)
- desc_set_tx_owner(desc, desc_flags |
- TXDESC_LAST_SEG | irq_flag);
- else
- desc_flags |= TXDESC_LAST_SEG | irq_flag;
-
- /* Set owner on first desc last to avoid race condition */
- wmb();
- desc_set_tx_owner(first, desc_flags | TXDESC_FIRST_SEG);
-
- writel(1, priv->base + XGMAC_DMA_TX_POLL);
-
- priv->tx_head = dma_ring_incr(entry, DMA_TX_RING_SZ);
-
- /* Ensure tx_head update is visible to tx completion */
- smp_mb();
- if (unlikely(tx_dma_ring_space(priv) <= MAX_SKB_FRAGS)) {
- netif_stop_queue(dev);
- /* Ensure netif_stop_queue is visible to tx completion */
- smp_mb();
- if (tx_dma_ring_space(priv) > MAX_SKB_FRAGS)
- netif_start_queue(dev);
- }
- return NETDEV_TX_OK;
-
-dma_err:
- entry = priv->tx_head;
- for ( ; i > 0; i--) {
- entry = dma_ring_incr(entry, DMA_TX_RING_SZ);
- desc = priv->dma_tx + entry;
- priv->tx_skbuff[entry] = NULL;
- dma_unmap_page(priv->device, desc_get_buf_addr(desc),
- desc_get_buf_len(desc), DMA_TO_DEVICE);
- desc_clear_tx_owner(desc);
- }
- desc = first;
- dma_unmap_single(priv->device, desc_get_buf_addr(desc),
- desc_get_buf_len(desc), DMA_TO_DEVICE);
- dev_kfree_skb_any(skb);
- return NETDEV_TX_OK;
-}
-
-static int xgmac_rx(struct xgmac_priv *priv, int limit)
-{
- unsigned int entry;
- unsigned int count = 0;
- struct xgmac_dma_desc *p;
-
- while (count < limit) {
- int ip_checksum;
- struct sk_buff *skb;
- int frame_len;
-
- if (!dma_ring_cnt(priv->rx_head, priv->rx_tail, DMA_RX_RING_SZ))
- break;
-
- entry = priv->rx_tail;
- p = priv->dma_rx + entry;
- if (desc_get_owner(p))
- break;
-
- count++;
- priv->rx_tail = dma_ring_incr(priv->rx_tail, DMA_RX_RING_SZ);
-
- /* read the status of the incoming frame */
- ip_checksum = desc_get_rx_status(priv, p);
- if (ip_checksum < 0)
- continue;
-
- skb = priv->rx_skbuff[entry];
- if (unlikely(!skb)) {
- netdev_err(priv->dev, "Inconsistent Rx descriptor chain\n");
- break;
- }
- priv->rx_skbuff[entry] = NULL;
-
- frame_len = desc_get_rx_frame_len(p);
- netdev_dbg(priv->dev, "RX frame size %d, COE status: %d\n",
- frame_len, ip_checksum);
-
- skb_put(skb, frame_len);
- dma_unmap_single(priv->device, desc_get_buf_addr(p),
- priv->dma_buf_sz - NET_IP_ALIGN, DMA_FROM_DEVICE);
-
- skb->protocol = eth_type_trans(skb, priv->dev);
- skb->ip_summed = ip_checksum;
- if (ip_checksum == CHECKSUM_NONE)
- netif_receive_skb(skb);
- else
- napi_gro_receive(&priv->napi, skb);
- }
-
- xgmac_rx_refill(priv);
-
- return count;
-}
-
-/**
- * xgmac_poll - xgmac poll method (NAPI)
- * @napi : pointer to the napi structure.
- * @budget : maximum number of packets that the current CPU can receive from
- * all interfaces.
- * Description :
- * This function implements the the reception process.
- * Also it runs the TX completion thread
- */
-static int xgmac_poll(struct napi_struct *napi, int budget)
-{
- struct xgmac_priv *priv = container_of(napi,
- struct xgmac_priv, napi);
- int work_done = 0;
-
- xgmac_tx_complete(priv);
- work_done = xgmac_rx(priv, budget);
-
- if (work_done < budget) {
- napi_complete_done(napi, work_done);
- __raw_writel(DMA_INTR_DEFAULT_MASK, priv->base + XGMAC_DMA_INTR_ENA);
- }
- return work_done;
-}
-
-/**
- * xgmac_tx_timeout
- * @dev : Pointer to net device structure
- * Description: this function is called when a packet transmission fails to
- * complete within a reasonable tmrate. The driver will mark the error in the
- * netdev structure and arrange for the device to be reset to a sane state
- * in order to transmit a new packet.
- */
-static void xgmac_tx_timeout(struct net_device *dev, unsigned int txqueue)
-{
- struct xgmac_priv *priv = netdev_priv(dev);
- schedule_work(&priv->tx_timeout_work);
-}
-
-/**
- * xgmac_set_rx_mode - entry point for multicast addressing
- * @dev : pointer to the device structure
- * Description:
- * This function is a driver entry point which gets called by the kernel
- * whenever multicast addresses must be enabled/disabled.
- * Return value:
- * void.
- */
-static void xgmac_set_rx_mode(struct net_device *dev)
-{
- int i;
- struct xgmac_priv *priv = netdev_priv(dev);
- void __iomem *ioaddr = priv->base;
- unsigned int value = 0;
- u32 hash_filter[XGMAC_NUM_HASH];
- int reg = 1;
- struct netdev_hw_addr *ha;
- bool use_hash = false;
-
- netdev_dbg(priv->dev, "# mcasts %d, # unicast %d\n",
- netdev_mc_count(dev), netdev_uc_count(dev));
-
- if (dev->flags & IFF_PROMISC)
- value |= XGMAC_FRAME_FILTER_PR;
-
- memset(hash_filter, 0, sizeof(hash_filter));
-
- if (netdev_uc_count(dev) > priv->max_macs) {
- use_hash = true;
- value |= XGMAC_FRAME_FILTER_HUC | XGMAC_FRAME_FILTER_HPF;
- }
- netdev_for_each_uc_addr(ha, dev) {
- if (use_hash) {
- u32 bit_nr = ~ether_crc(ETH_ALEN, ha->addr) >> 23;
-
- /* The most significant 4 bits determine the register to
- * use (H/L) while the other 5 bits determine the bit
- * within the register. */
- hash_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
- } else {
- xgmac_set_mac_addr(ioaddr, ha->addr, reg);
- reg++;
- }
- }
-
- if (dev->flags & IFF_ALLMULTI) {
- value |= XGMAC_FRAME_FILTER_PM;
- goto out;
- }
-
- if ((netdev_mc_count(dev) + reg - 1) > priv->max_macs) {
- use_hash = true;
- value |= XGMAC_FRAME_FILTER_HMC | XGMAC_FRAME_FILTER_HPF;
- } else {
- use_hash = false;
- }
- netdev_for_each_mc_addr(ha, dev) {
- if (use_hash) {
- u32 bit_nr = ~ether_crc(ETH_ALEN, ha->addr) >> 23;
-
- /* The most significant 4 bits determine the register to
- * use (H/L) while the other 5 bits determine the bit
- * within the register. */
- hash_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
- } else {
- xgmac_set_mac_addr(ioaddr, ha->addr, reg);
- reg++;
- }
- }
-
-out:
- for (i = reg; i <= priv->max_macs; i++)
- xgmac_set_mac_addr(ioaddr, NULL, i);
- for (i = 0; i < XGMAC_NUM_HASH; i++)
- writel(hash_filter[i], ioaddr + XGMAC_HASH(i));
-
- writel(value, ioaddr + XGMAC_FRAME_FILTER);
-}
-
-/**
- * xgmac_change_mtu - entry point to change MTU size for the device.
- * @dev : device pointer.
- * @new_mtu : the new MTU size for the device.
- * Description: the Maximum Transfer Unit (MTU) is used by the network layer
- * to drive packet transmission. Ethernet has an MTU of 1500 octets
- * (ETH_DATA_LEN). This value can be changed with ifconfig.
- * Return value:
- * 0 on success and an appropriate (-)ve integer as defined in errno.h
- * file on failure.
- */
-static int xgmac_change_mtu(struct net_device *dev, int new_mtu)
-{
- /* Stop everything, get ready to change the MTU */
- if (!netif_running(dev))
- return 0;
-
- /* Bring interface down, change mtu and bring interface back up */
- xgmac_stop(dev);
- dev->mtu = new_mtu;
- return xgmac_open(dev);
-}
-
-static irqreturn_t xgmac_pmt_interrupt(int irq, void *dev_id)
-{
- u32 intr_status;
- struct net_device *dev = (struct net_device *)dev_id;
- struct xgmac_priv *priv = netdev_priv(dev);
- void __iomem *ioaddr = priv->base;
-
- intr_status = __raw_readl(ioaddr + XGMAC_INT_STAT);
- if (intr_status & XGMAC_INT_STAT_PMT) {
- netdev_dbg(priv->dev, "received Magic frame\n");
- /* clear the PMT bits 5 and 6 by reading the PMT */
- readl(ioaddr + XGMAC_PMT);
- }
- return IRQ_HANDLED;
-}
-
-static irqreturn_t xgmac_interrupt(int irq, void *dev_id)
-{
- u32 intr_status;
- struct net_device *dev = (struct net_device *)dev_id;
- struct xgmac_priv *priv = netdev_priv(dev);
- struct xgmac_extra_stats *x = &priv->xstats;
-
- /* read the status register (CSR5) */
- intr_status = __raw_readl(priv->base + XGMAC_DMA_STATUS);
- intr_status &= __raw_readl(priv->base + XGMAC_DMA_INTR_ENA);
- __raw_writel(intr_status, priv->base + XGMAC_DMA_STATUS);
-
- /* It displays the DMA process states (CSR5 register) */
- /* ABNORMAL interrupts */
- if (unlikely(intr_status & DMA_STATUS_AIS)) {
- if (intr_status & DMA_STATUS_TJT) {
- netdev_err(priv->dev, "transmit jabber\n");
- x->tx_jabber++;
- }
- if (intr_status & DMA_STATUS_RU)
- x->rx_buf_unav++;
- if (intr_status & DMA_STATUS_RPS) {
- netdev_err(priv->dev, "receive process stopped\n");
- x->rx_process_stopped++;
- }
- if (intr_status & DMA_STATUS_ETI) {
- netdev_err(priv->dev, "transmit early interrupt\n");
- x->tx_early++;
- }
- if (intr_status & DMA_STATUS_TPS) {
- netdev_err(priv->dev, "transmit process stopped\n");
- x->tx_process_stopped++;
- schedule_work(&priv->tx_timeout_work);
- }
- if (intr_status & DMA_STATUS_FBI) {
- netdev_err(priv->dev, "fatal bus error\n");
- x->fatal_bus_error++;
- }
- }
-
- /* TX/RX NORMAL interrupts */
- if (intr_status & (DMA_STATUS_RI | DMA_STATUS_TU | DMA_STATUS_TI)) {
- __raw_writel(DMA_INTR_ABNORMAL, priv->base + XGMAC_DMA_INTR_ENA);
- napi_schedule(&priv->napi);
- }
-
- return IRQ_HANDLED;
-}
-
-#ifdef CONFIG_NET_POLL_CONTROLLER
-/* Polling receive - used by NETCONSOLE and other diagnostic tools
- * to allow network I/O with interrupts disabled. */
-static void xgmac_poll_controller(struct net_device *dev)
-{
- disable_irq(dev->irq);
- xgmac_interrupt(dev->irq, dev);
- enable_irq(dev->irq);
-}
-#endif
-
-static void
-xgmac_get_stats64(struct net_device *dev,
- struct rtnl_link_stats64 *storage)
-{
- struct xgmac_priv *priv = netdev_priv(dev);
- void __iomem *base = priv->base;
- u32 count;
-
- spin_lock_bh(&priv->stats_lock);
- writel(XGMAC_MMC_CTRL_CNT_FRZ, base + XGMAC_MMC_CTRL);
-
- storage->rx_bytes = readl(base + XGMAC_MMC_RXOCTET_G_LO);
- storage->rx_bytes |= (u64)(readl(base + XGMAC_MMC_RXOCTET_G_HI)) << 32;
-
- storage->rx_packets = readl(base + XGMAC_MMC_RXFRAME_GB_LO);
- storage->multicast = readl(base + XGMAC_MMC_RXMCFRAME_G);
- storage->rx_crc_errors = readl(base + XGMAC_MMC_RXCRCERR);
- storage->rx_length_errors = readl(base + XGMAC_MMC_RXLENGTHERR);
- storage->rx_missed_errors = readl(base + XGMAC_MMC_RXOVERFLOW);
-
- storage->tx_bytes = readl(base + XGMAC_MMC_TXOCTET_G_LO);
- storage->tx_bytes |= (u64)(readl(base + XGMAC_MMC_TXOCTET_G_HI)) << 32;
-
- count = readl(base + XGMAC_MMC_TXFRAME_GB_LO);
- storage->tx_errors = count - readl(base + XGMAC_MMC_TXFRAME_G_LO);
- storage->tx_packets = count;
- storage->tx_fifo_errors = readl(base + XGMAC_MMC_TXUNDERFLOW);
-
- writel(0, base + XGMAC_MMC_CTRL);
- spin_unlock_bh(&priv->stats_lock);
-}
-
-static int xgmac_set_mac_address(struct net_device *dev, void *p)
-{
- struct xgmac_priv *priv = netdev_priv(dev);
- void __iomem *ioaddr = priv->base;
- struct sockaddr *addr = p;
-
- if (!is_valid_ether_addr(addr->sa_data))
- return -EADDRNOTAVAIL;
-
- memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
-
- xgmac_set_mac_addr(ioaddr, dev->dev_addr, 0);
-
- return 0;
-}
-
-static int xgmac_set_features(struct net_device *dev, netdev_features_t features)
-{
- u32 ctrl;
- struct xgmac_priv *priv = netdev_priv(dev);
- void __iomem *ioaddr = priv->base;
- netdev_features_t changed = dev->features ^ features;
-
- if (!(changed & NETIF_F_RXCSUM))
- return 0;
-
- ctrl = readl(ioaddr + XGMAC_CONTROL);
- if (features & NETIF_F_RXCSUM)
- ctrl |= XGMAC_CONTROL_IPC;
- else
- ctrl &= ~XGMAC_CONTROL_IPC;
- writel(ctrl, ioaddr + XGMAC_CONTROL);
-
- return 0;
-}
-
-static const struct net_device_ops xgmac_netdev_ops = {
- .ndo_open = xgmac_open,
- .ndo_start_xmit = xgmac_xmit,
- .ndo_stop = xgmac_stop,
- .ndo_change_mtu = xgmac_change_mtu,
- .ndo_set_rx_mode = xgmac_set_rx_mode,
- .ndo_tx_timeout = xgmac_tx_timeout,
- .ndo_get_stats64 = xgmac_get_stats64,
-#ifdef CONFIG_NET_POLL_CONTROLLER
- .ndo_poll_controller = xgmac_poll_controller,
-#endif
- .ndo_set_mac_address = xgmac_set_mac_address,
- .ndo_set_features = xgmac_set_features,
-};
-
-static int xgmac_ethtool_get_link_ksettings(struct net_device *dev,
- struct ethtool_link_ksettings *cmd)
-{
- cmd->base.autoneg = 0;
- cmd->base.duplex = DUPLEX_FULL;
- cmd->base.speed = 10000;
- ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported, 0);
- ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising, 0);
- return 0;
-}
-
-static void xgmac_get_pauseparam(struct net_device *netdev,
- struct ethtool_pauseparam *pause)
-{
- struct xgmac_priv *priv = netdev_priv(netdev);
-
- pause->rx_pause = priv->rx_pause;
- pause->tx_pause = priv->tx_pause;
-}
-
-static int xgmac_set_pauseparam(struct net_device *netdev,
- struct ethtool_pauseparam *pause)
-{
- struct xgmac_priv *priv = netdev_priv(netdev);
-
- if (pause->autoneg)
- return -EINVAL;
-
- return xgmac_set_flow_ctrl(priv, pause->rx_pause, pause->tx_pause);
-}
-
-struct xgmac_stats {
- char stat_string[ETH_GSTRING_LEN];
- int stat_offset;
- bool is_reg;
-};
-
-#define XGMAC_STAT(m) \
- { #m, offsetof(struct xgmac_priv, xstats.m), false }
-#define XGMAC_HW_STAT(m, reg_offset) \
- { #m, reg_offset, true }
-
-static const struct xgmac_stats xgmac_gstrings_stats[] = {
- XGMAC_STAT(tx_frame_flushed),
- XGMAC_STAT(tx_payload_error),
- XGMAC_STAT(tx_ip_header_error),
- XGMAC_STAT(tx_local_fault),
- XGMAC_STAT(tx_remote_fault),
- XGMAC_STAT(tx_early),
- XGMAC_STAT(tx_process_stopped),
- XGMAC_STAT(tx_jabber),
- XGMAC_STAT(rx_buf_unav),
- XGMAC_STAT(rx_process_stopped),
- XGMAC_STAT(rx_payload_error),
- XGMAC_STAT(rx_ip_header_error),
- XGMAC_STAT(rx_da_filter_fail),
- XGMAC_STAT(fatal_bus_error),
- XGMAC_HW_STAT(rx_watchdog, XGMAC_MMC_RXWATCHDOG),
- XGMAC_HW_STAT(tx_vlan, XGMAC_MMC_TXVLANFRAME),
- XGMAC_HW_STAT(rx_vlan, XGMAC_MMC_RXVLANFRAME),
- XGMAC_HW_STAT(tx_pause, XGMAC_MMC_TXPAUSEFRAME),
- XGMAC_HW_STAT(rx_pause, XGMAC_MMC_RXPAUSEFRAME),
-};
-#define XGMAC_STATS_LEN ARRAY_SIZE(xgmac_gstrings_stats)
-
-static void xgmac_get_ethtool_stats(struct net_device *dev,
- struct ethtool_stats *dummy,
- u64 *data)
-{
- struct xgmac_priv *priv = netdev_priv(dev);
- void *p = priv;
- int i;
-
- for (i = 0; i < XGMAC_STATS_LEN; i++) {
- if (xgmac_gstrings_stats[i].is_reg)
- *data++ = readl(priv->base +
- xgmac_gstrings_stats[i].stat_offset);
- else
- *data++ = *(u32 *)(p +
- xgmac_gstrings_stats[i].stat_offset);
- }
-}
-
-static int xgmac_get_sset_count(struct net_device *netdev, int sset)
-{
- switch (sset) {
- case ETH_SS_STATS:
- return XGMAC_STATS_LEN;
- default:
- return -EINVAL;
- }
-}
-
-static void xgmac_get_strings(struct net_device *dev, u32 stringset,
- u8 *data)
-{
- int i;
- u8 *p = data;
-
- switch (stringset) {
- case ETH_SS_STATS:
- for (i = 0; i < XGMAC_STATS_LEN; i++) {
- memcpy(p, xgmac_gstrings_stats[i].stat_string,
- ETH_GSTRING_LEN);
- p += ETH_GSTRING_LEN;
- }
- break;
- default:
- WARN_ON(1);
- break;
- }
-}
-
-static void xgmac_get_wol(struct net_device *dev,
- struct ethtool_wolinfo *wol)
-{
- struct xgmac_priv *priv = netdev_priv(dev);
-
- if (device_can_wakeup(priv->device)) {
- wol->supported = WAKE_MAGIC | WAKE_UCAST;
- wol->wolopts = priv->wolopts;
- }
-}
-
-static int xgmac_set_wol(struct net_device *dev,
- struct ethtool_wolinfo *wol)
-{
- struct xgmac_priv *priv = netdev_priv(dev);
- u32 support = WAKE_MAGIC | WAKE_UCAST;
-
- if (!device_can_wakeup(priv->device))
- return -ENOTSUPP;
-
- if (wol->wolopts & ~support)
- return -EINVAL;
-
- priv->wolopts = wol->wolopts;
-
- if (wol->wolopts) {
- device_set_wakeup_enable(priv->device, 1);
- enable_irq_wake(dev->irq);
- } else {
- device_set_wakeup_enable(priv->device, 0);
- disable_irq_wake(dev->irq);
- }
-
- return 0;
-}
-
-static const struct ethtool_ops xgmac_ethtool_ops = {
- .get_link = ethtool_op_get_link,
- .get_pauseparam = xgmac_get_pauseparam,
- .set_pauseparam = xgmac_set_pauseparam,
- .get_ethtool_stats = xgmac_get_ethtool_stats,
- .get_strings = xgmac_get_strings,
- .get_wol = xgmac_get_wol,
- .set_wol = xgmac_set_wol,
- .get_sset_count = xgmac_get_sset_count,
- .get_link_ksettings = xgmac_ethtool_get_link_ksettings,
-};
-
-/**
- * xgmac_probe
- * @pdev: platform device pointer
- * Description: the driver is initialized through platform_device.
- */
-static int xgmac_probe(struct platform_device *pdev)
-{
- int ret = 0;
- struct resource *res;
- struct net_device *ndev = NULL;
- struct xgmac_priv *priv = NULL;
- u32 uid;
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res)
- return -ENODEV;
-
- if (!request_mem_region(res->start, resource_size(res), pdev->name))
- return -EBUSY;
-
- ndev = alloc_etherdev(sizeof(struct xgmac_priv));
- if (!ndev) {
- ret = -ENOMEM;
- goto err_alloc;
- }
-
- SET_NETDEV_DEV(ndev, &pdev->dev);
- priv = netdev_priv(ndev);
- platform_set_drvdata(pdev, ndev);
- ndev->netdev_ops = &xgmac_netdev_ops;
- ndev->ethtool_ops = &xgmac_ethtool_ops;
- spin_lock_init(&priv->stats_lock);
- INIT_WORK(&priv->tx_timeout_work, xgmac_tx_timeout_work);
-
- priv->device = &pdev->dev;
- priv->dev = ndev;
- priv->rx_pause = 1;
- priv->tx_pause = 1;
-
- priv->base = ioremap(res->start, resource_size(res));
- if (!priv->base) {
- netdev_err(ndev, "ioremap failed\n");
- ret = -ENOMEM;
- goto err_io;
- }
-
- uid = readl(priv->base + XGMAC_VERSION);
- netdev_info(ndev, "h/w version is 0x%x\n", uid);
-
- /* Figure out how many valid mac address filter registers we have */
- writel(1, priv->base + XGMAC_ADDR_HIGH(31));
- if (readl(priv->base + XGMAC_ADDR_HIGH(31)) == 1)
- priv->max_macs = 31;
- else
- priv->max_macs = 7;
-
- writel(0, priv->base + XGMAC_DMA_INTR_ENA);
- ndev->irq = platform_get_irq(pdev, 0);
- if (ndev->irq == -ENXIO) {
- netdev_err(ndev, "No irq resource\n");
- ret = ndev->irq;
- goto err_irq;
- }
-
- ret = request_irq(ndev->irq, xgmac_interrupt, 0,
- dev_name(&pdev->dev), ndev);
- if (ret < 0) {
- netdev_err(ndev, "Could not request irq %d - ret %d)\n",
- ndev->irq, ret);
- goto err_irq;
- }
-
- priv->pmt_irq = platform_get_irq(pdev, 1);
- if (priv->pmt_irq == -ENXIO) {
- netdev_err(ndev, "No pmt irq resource\n");
- ret = priv->pmt_irq;
- goto err_pmt_irq;
- }
-
- ret = request_irq(priv->pmt_irq, xgmac_pmt_interrupt, 0,
- dev_name(&pdev->dev), ndev);
- if (ret < 0) {
- netdev_err(ndev, "Could not request irq %d - ret %d)\n",
- priv->pmt_irq, ret);
- goto err_pmt_irq;
- }
-
- device_set_wakeup_capable(&pdev->dev, 1);
- if (device_can_wakeup(priv->device))
- priv->wolopts = WAKE_MAGIC; /* Magic Frame as default */
-
- ndev->hw_features = NETIF_F_SG | NETIF_F_HIGHDMA;
- if (readl(priv->base + XGMAC_DMA_HW_FEATURE) & DMA_HW_FEAT_TXCOESEL)
- ndev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
- NETIF_F_RXCSUM;
- ndev->features |= ndev->hw_features;
- ndev->priv_flags |= IFF_UNICAST_FLT;
-
- /* MTU range: 46 - 9000 */
- ndev->min_mtu = ETH_ZLEN - ETH_HLEN;
- ndev->max_mtu = XGMAC_MAX_MTU;
-
- /* Get the MAC address */
- xgmac_get_mac_addr(priv->base, ndev->dev_addr, 0);
- if (!is_valid_ether_addr(ndev->dev_addr))
- netdev_warn(ndev, "MAC address %pM not valid",
- ndev->dev_addr);
-
- netif_napi_add(ndev, &priv->napi, xgmac_poll, 64);
- ret = register_netdev(ndev);
- if (ret)
- goto err_reg;
-
- return 0;
-
-err_reg:
- netif_napi_del(&priv->napi);
- free_irq(priv->pmt_irq, ndev);
-err_pmt_irq:
- free_irq(ndev->irq, ndev);
-err_irq:
- iounmap(priv->base);
-err_io:
- free_netdev(ndev);
-err_alloc:
- release_mem_region(res->start, resource_size(res));
- return ret;
-}
-
-/**
- * xgmac_dvr_remove
- * @pdev: platform device pointer
- * Description: this function resets the TX/RX processes, disables the MAC RX/TX
- * changes the link status, releases the DMA descriptor rings,
- * unregisters the MDIO bus and unmaps the allocated memory.
- */
-static int xgmac_remove(struct platform_device *pdev)
-{
- struct net_device *ndev = platform_get_drvdata(pdev);
- struct xgmac_priv *priv = netdev_priv(ndev);
- struct resource *res;
-
- xgmac_mac_disable(priv->base);
-
- /* Free the IRQ lines */
- free_irq(ndev->irq, ndev);
- free_irq(priv->pmt_irq, ndev);
-
- unregister_netdev(ndev);
- netif_napi_del(&priv->napi);
-
- iounmap(priv->base);
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- release_mem_region(res->start, resource_size(res));
-
- free_netdev(ndev);
-
- return 0;
-}
-
-#ifdef CONFIG_PM_SLEEP
-static void xgmac_pmt(void __iomem *ioaddr, unsigned long mode)
-{
- unsigned int pmt = 0;
-
- if (mode & WAKE_MAGIC)
- pmt |= XGMAC_PMT_POWERDOWN | XGMAC_PMT_MAGIC_PKT_EN;
- if (mode & WAKE_UCAST)
- pmt |= XGMAC_PMT_POWERDOWN | XGMAC_PMT_GLBL_UNICAST;
-
- writel(pmt, ioaddr + XGMAC_PMT);
-}
-
-static int xgmac_suspend(struct device *dev)
-{
- struct net_device *ndev = dev_get_drvdata(dev);
- struct xgmac_priv *priv = netdev_priv(ndev);
- u32 value;
-
- if (!ndev || !netif_running(ndev))
- return 0;
-
- netif_device_detach(ndev);
- napi_disable(&priv->napi);
- writel(0, priv->base + XGMAC_DMA_INTR_ENA);
-
- if (device_may_wakeup(priv->device)) {
- /* Stop TX/RX DMA Only */
- value = readl(priv->base + XGMAC_DMA_CONTROL);
- value &= ~(DMA_CONTROL_ST | DMA_CONTROL_SR);
- writel(value, priv->base + XGMAC_DMA_CONTROL);
-
- xgmac_pmt(priv->base, priv->wolopts);
- } else
- xgmac_mac_disable(priv->base);
-
- return 0;
-}
-
-static int xgmac_resume(struct device *dev)
-{
- struct net_device *ndev = dev_get_drvdata(dev);
- struct xgmac_priv *priv = netdev_priv(ndev);
- void __iomem *ioaddr = priv->base;
-
- if (!netif_running(ndev))
- return 0;
-
- xgmac_pmt(ioaddr, 0);
-
- /* Enable the MAC and DMA */
- xgmac_mac_enable(ioaddr);
- writel(DMA_INTR_DEFAULT_MASK, ioaddr + XGMAC_DMA_STATUS);
- writel(DMA_INTR_DEFAULT_MASK, ioaddr + XGMAC_DMA_INTR_ENA);
-
- netif_device_attach(ndev);
- napi_enable(&priv->napi);
-
- return 0;
-}
-#endif /* CONFIG_PM_SLEEP */
-
-static SIMPLE_DEV_PM_OPS(xgmac_pm_ops, xgmac_suspend, xgmac_resume);
-
-static const struct of_device_id xgmac_of_match[] = {
- { .compatible = "calxeda,hb-xgmac", },
- {},
-};
-MODULE_DEVICE_TABLE(of, xgmac_of_match);
-
-static struct platform_driver xgmac_driver = {
- .driver = {
- .name = "calxedaxgmac",
- .of_match_table = xgmac_of_match,
- .pm = &xgmac_pm_ops,
- },
- .probe = xgmac_probe,
- .remove = xgmac_remove,
-};
-
-module_platform_driver(xgmac_driver);
-
-MODULE_AUTHOR("Calxeda, Inc.");
-MODULE_DESCRIPTION("Calxeda 10G XGMAC driver");
-MODULE_LICENSE("GPL v2");
--
2.20.1
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