diff options
Diffstat (limited to 'drivers/net/ksz884x.c')
| -rw-r--r-- | drivers/net/ksz884x.c | 7289 |
1 files changed, 0 insertions, 7289 deletions
diff --git a/drivers/net/ksz884x.c b/drivers/net/ksz884x.c deleted file mode 100644 index 27418d31a09f..000000000000 --- a/drivers/net/ksz884x.c +++ /dev/null @@ -1,7289 +0,0 @@ -/** - * drivers/net/ksx884x.c - Micrel KSZ8841/2 PCI Ethernet driver - * - * Copyright (c) 2009-2010 Micrel, Inc. - * Tristram Ha <Tristram.Ha@micrel.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License 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. - */ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/ioport.h> -#include <linux/pci.h> -#include <linux/proc_fs.h> -#include <linux/mii.h> -#include <linux/platform_device.h> -#include <linux/ethtool.h> -#include <linux/etherdevice.h> -#include <linux/in.h> -#include <linux/ip.h> -#include <linux/if_vlan.h> -#include <linux/crc32.h> -#include <linux/sched.h> -#include <linux/slab.h> - - -/* DMA Registers */ - -#define KS_DMA_TX_CTRL 0x0000 -#define DMA_TX_ENABLE 0x00000001 -#define DMA_TX_CRC_ENABLE 0x00000002 -#define DMA_TX_PAD_ENABLE 0x00000004 -#define DMA_TX_LOOPBACK 0x00000100 -#define DMA_TX_FLOW_ENABLE 0x00000200 -#define DMA_TX_CSUM_IP 0x00010000 -#define DMA_TX_CSUM_TCP 0x00020000 -#define DMA_TX_CSUM_UDP 0x00040000 -#define DMA_TX_BURST_SIZE 0x3F000000 - -#define KS_DMA_RX_CTRL 0x0004 -#define DMA_RX_ENABLE 0x00000001 -#define KS884X_DMA_RX_MULTICAST 0x00000002 -#define DMA_RX_PROMISCUOUS 0x00000004 -#define DMA_RX_ERROR 0x00000008 -#define DMA_RX_UNICAST 0x00000010 -#define DMA_RX_ALL_MULTICAST 0x00000020 -#define DMA_RX_BROADCAST 0x00000040 -#define DMA_RX_FLOW_ENABLE 0x00000200 -#define DMA_RX_CSUM_IP 0x00010000 -#define DMA_RX_CSUM_TCP 0x00020000 -#define DMA_RX_CSUM_UDP 0x00040000 -#define DMA_RX_BURST_SIZE 0x3F000000 - -#define DMA_BURST_SHIFT 24 -#define DMA_BURST_DEFAULT 8 - -#define KS_DMA_TX_START 0x0008 -#define KS_DMA_RX_START 0x000C -#define DMA_START 0x00000001 - -#define KS_DMA_TX_ADDR 0x0010 -#define KS_DMA_RX_ADDR 0x0014 - -#define DMA_ADDR_LIST_MASK 0xFFFFFFFC -#define DMA_ADDR_LIST_SHIFT 2 - -/* MTR0 */ -#define KS884X_MULTICAST_0_OFFSET 0x0020 -#define KS884X_MULTICAST_1_OFFSET 0x0021 -#define KS884X_MULTICAST_2_OFFSET 0x0022 -#define KS884x_MULTICAST_3_OFFSET 0x0023 -/* MTR1 */ -#define KS884X_MULTICAST_4_OFFSET 0x0024 -#define KS884X_MULTICAST_5_OFFSET 0x0025 -#define KS884X_MULTICAST_6_OFFSET 0x0026 -#define KS884X_MULTICAST_7_OFFSET 0x0027 - -/* Interrupt Registers */ - -/* INTEN */ -#define KS884X_INTERRUPTS_ENABLE 0x0028 -/* INTST */ -#define KS884X_INTERRUPTS_STATUS 0x002C - -#define KS884X_INT_RX_STOPPED 0x02000000 -#define KS884X_INT_TX_STOPPED 0x04000000 -#define KS884X_INT_RX_OVERRUN 0x08000000 -#define KS884X_INT_TX_EMPTY 0x10000000 -#define KS884X_INT_RX 0x20000000 -#define KS884X_INT_TX 0x40000000 -#define KS884X_INT_PHY 0x80000000 - -#define KS884X_INT_RX_MASK \ - (KS884X_INT_RX | KS884X_INT_RX_OVERRUN) -#define KS884X_INT_TX_MASK \ - (KS884X_INT_TX | KS884X_INT_TX_EMPTY) -#define KS884X_INT_MASK (KS884X_INT_RX | KS884X_INT_TX | KS884X_INT_PHY) - -/* MAC Additional Station Address */ - -/* MAAL0 */ -#define KS_ADD_ADDR_0_LO 0x0080 -/* MAAH0 */ -#define KS_ADD_ADDR_0_HI 0x0084 -/* MAAL1 */ -#define KS_ADD_ADDR_1_LO 0x0088 -/* MAAH1 */ -#define KS_ADD_ADDR_1_HI 0x008C -/* MAAL2 */ -#define KS_ADD_ADDR_2_LO 0x0090 -/* MAAH2 */ -#define KS_ADD_ADDR_2_HI 0x0094 -/* MAAL3 */ -#define KS_ADD_ADDR_3_LO 0x0098 -/* MAAH3 */ -#define KS_ADD_ADDR_3_HI 0x009C -/* MAAL4 */ -#define KS_ADD_ADDR_4_LO 0x00A0 -/* MAAH4 */ -#define KS_ADD_ADDR_4_HI 0x00A4 -/* MAAL5 */ -#define KS_ADD_ADDR_5_LO 0x00A8 -/* MAAH5 */ -#define KS_ADD_ADDR_5_HI 0x00AC -/* MAAL6 */ -#define KS_ADD_ADDR_6_LO 0x00B0 -/* MAAH6 */ -#define KS_ADD_ADDR_6_HI 0x00B4 -/* MAAL7 */ -#define KS_ADD_ADDR_7_LO 0x00B8 -/* MAAH7 */ -#define KS_ADD_ADDR_7_HI 0x00BC -/* MAAL8 */ -#define KS_ADD_ADDR_8_LO 0x00C0 -/* MAAH8 */ -#define KS_ADD_ADDR_8_HI 0x00C4 -/* MAAL9 */ -#define KS_ADD_ADDR_9_LO 0x00C8 -/* MAAH9 */ -#define KS_ADD_ADDR_9_HI 0x00CC -/* MAAL10 */ -#define KS_ADD_ADDR_A_LO 0x00D0 -/* MAAH10 */ -#define KS_ADD_ADDR_A_HI 0x00D4 -/* MAAL11 */ -#define KS_ADD_ADDR_B_LO 0x00D8 -/* MAAH11 */ -#define KS_ADD_ADDR_B_HI 0x00DC -/* MAAL12 */ -#define KS_ADD_ADDR_C_LO 0x00E0 -/* MAAH12 */ -#define KS_ADD_ADDR_C_HI 0x00E4 -/* MAAL13 */ -#define KS_ADD_ADDR_D_LO 0x00E8 -/* MAAH13 */ -#define KS_ADD_ADDR_D_HI 0x00EC -/* MAAL14 */ -#define KS_ADD_ADDR_E_LO 0x00F0 -/* MAAH14 */ -#define KS_ADD_ADDR_E_HI 0x00F4 -/* MAAL15 */ -#define KS_ADD_ADDR_F_LO 0x00F8 -/* MAAH15 */ -#define KS_ADD_ADDR_F_HI 0x00FC - -#define ADD_ADDR_HI_MASK 0x0000FFFF -#define ADD_ADDR_ENABLE 0x80000000 -#define ADD_ADDR_INCR 8 - -/* Miscellaneous Registers */ - -/* MARL */ -#define KS884X_ADDR_0_OFFSET 0x0200 -#define KS884X_ADDR_1_OFFSET 0x0201 -/* MARM */ -#define KS884X_ADDR_2_OFFSET 0x0202 -#define KS884X_ADDR_3_OFFSET 0x0203 -/* MARH */ -#define KS884X_ADDR_4_OFFSET 0x0204 -#define KS884X_ADDR_5_OFFSET 0x0205 - -/* OBCR */ -#define KS884X_BUS_CTRL_OFFSET 0x0210 - -#define BUS_SPEED_125_MHZ 0x0000 -#define BUS_SPEED_62_5_MHZ 0x0001 -#define BUS_SPEED_41_66_MHZ 0x0002 -#define BUS_SPEED_25_MHZ 0x0003 - -/* EEPCR */ -#define KS884X_EEPROM_CTRL_OFFSET 0x0212 - -#define EEPROM_CHIP_SELECT 0x0001 -#define EEPROM_SERIAL_CLOCK 0x0002 -#define EEPROM_DATA_OUT 0x0004 -#define EEPROM_DATA_IN 0x0008 -#define EEPROM_ACCESS_ENABLE 0x0010 - -/* MBIR */ -#define KS884X_MEM_INFO_OFFSET 0x0214 - -#define RX_MEM_TEST_FAILED 0x0008 -#define RX_MEM_TEST_FINISHED 0x0010 -#define TX_MEM_TEST_FAILED 0x0800 -#define TX_MEM_TEST_FINISHED 0x1000 - -/* GCR */ -#define KS884X_GLOBAL_CTRL_OFFSET 0x0216 -#define GLOBAL_SOFTWARE_RESET 0x0001 - -#define KS8841_POWER_MANAGE_OFFSET 0x0218 - -/* WFCR */ -#define KS8841_WOL_CTRL_OFFSET 0x021A -#define KS8841_WOL_MAGIC_ENABLE 0x0080 -#define KS8841_WOL_FRAME3_ENABLE 0x0008 -#define KS8841_WOL_FRAME2_ENABLE 0x0004 -#define KS8841_WOL_FRAME1_ENABLE 0x0002 -#define KS8841_WOL_FRAME0_ENABLE 0x0001 - -/* WF0 */ -#define KS8841_WOL_FRAME_CRC_OFFSET 0x0220 -#define KS8841_WOL_FRAME_BYTE0_OFFSET 0x0224 -#define KS8841_WOL_FRAME_BYTE2_OFFSET 0x0228 - -/* IACR */ -#define KS884X_IACR_P 0x04A0 -#define KS884X_IACR_OFFSET KS884X_IACR_P - -/* IADR1 */ -#define KS884X_IADR1_P 0x04A2 -#define KS884X_IADR2_P 0x04A4 -#define KS884X_IADR3_P 0x04A6 -#define KS884X_IADR4_P 0x04A8 -#define KS884X_IADR5_P 0x04AA - -#define KS884X_ACC_CTRL_SEL_OFFSET KS884X_IACR_P -#define KS884X_ACC_CTRL_INDEX_OFFSET (KS884X_ACC_CTRL_SEL_OFFSET + 1) - -#define KS884X_ACC_DATA_0_OFFSET KS884X_IADR4_P -#define KS884X_ACC_DATA_1_OFFSET (KS884X_ACC_DATA_0_OFFSET + 1) -#define KS884X_ACC_DATA_2_OFFSET KS884X_IADR5_P -#define KS884X_ACC_DATA_3_OFFSET (KS884X_ACC_DATA_2_OFFSET + 1) -#define KS884X_ACC_DATA_4_OFFSET KS884X_IADR2_P -#define KS884X_ACC_DATA_5_OFFSET (KS884X_ACC_DATA_4_OFFSET + 1) -#define KS884X_ACC_DATA_6_OFFSET KS884X_IADR3_P -#define KS884X_ACC_DATA_7_OFFSET (KS884X_ACC_DATA_6_OFFSET + 1) -#define KS884X_ACC_DATA_8_OFFSET KS884X_IADR1_P - -/* P1MBCR */ -#define KS884X_P1MBCR_P 0x04D0 -#define KS884X_P1MBSR_P 0x04D2 -#define KS884X_PHY1ILR_P 0x04D4 -#define KS884X_PHY1IHR_P 0x04D6 -#define KS884X_P1ANAR_P 0x04D8 -#define KS884X_P1ANLPR_P 0x04DA - -/* P2MBCR */ -#define KS884X_P2MBCR_P 0x04E0 -#define KS884X_P2MBSR_P 0x04E2 -#define KS884X_PHY2ILR_P 0x04E4 -#define KS884X_PHY2IHR_P 0x04E6 -#define KS884X_P2ANAR_P 0x04E8 -#define KS884X_P2ANLPR_P 0x04EA - -#define KS884X_PHY_1_CTRL_OFFSET KS884X_P1MBCR_P -#define PHY_CTRL_INTERVAL (KS884X_P2MBCR_P - KS884X_P1MBCR_P) - -#define KS884X_PHY_CTRL_OFFSET 0x00 - -/* Mode Control Register */ -#define PHY_REG_CTRL 0 - -#define PHY_RESET 0x8000 -#define PHY_LOOPBACK 0x4000 -#define PHY_SPEED_100MBIT 0x2000 -#define PHY_AUTO_NEG_ENABLE 0x1000 -#define PHY_POWER_DOWN 0x0800 -#define PHY_MII_DISABLE 0x0400 -#define PHY_AUTO_NEG_RESTART 0x0200 -#define PHY_FULL_DUPLEX 0x0100 -#define PHY_COLLISION_TEST 0x0080 -#define PHY_HP_MDIX 0x0020 -#define PHY_FORCE_MDIX 0x0010 -#define PHY_AUTO_MDIX_DISABLE 0x0008 -#define PHY_REMOTE_FAULT_DISABLE 0x0004 -#define PHY_TRANSMIT_DISABLE 0x0002 -#define PHY_LED_DISABLE 0x0001 - -#define KS884X_PHY_STATUS_OFFSET 0x02 - -/* Mode Status Register */ -#define PHY_REG_STATUS 1 - -#define PHY_100BT4_CAPABLE 0x8000 -#define PHY_100BTX_FD_CAPABLE 0x4000 -#define PHY_100BTX_CAPABLE 0x2000 -#define PHY_10BT_FD_CAPABLE 0x1000 -#define PHY_10BT_CAPABLE 0x0800 -#define PHY_MII_SUPPRESS_CAPABLE 0x0040 -#define PHY_AUTO_NEG_ACKNOWLEDGE 0x0020 -#define PHY_REMOTE_FAULT 0x0010 -#define PHY_AUTO_NEG_CAPABLE 0x0008 -#define PHY_LINK_STATUS 0x0004 -#define PHY_JABBER_DETECT 0x0002 -#define PHY_EXTENDED_CAPABILITY 0x0001 - -#define KS884X_PHY_ID_1_OFFSET 0x04 -#define KS884X_PHY_ID_2_OFFSET 0x06 - -/* PHY Identifier Registers */ -#define PHY_REG_ID_1 2 -#define PHY_REG_ID_2 3 - -#define KS884X_PHY_AUTO_NEG_OFFSET 0x08 - -/* Auto-Negotiation Advertisement Register */ -#define PHY_REG_AUTO_NEGOTIATION 4 - -#define PHY_AUTO_NEG_NEXT_PAGE 0x8000 -#define PHY_AUTO_NEG_REMOTE_FAULT 0x2000 -/* Not supported. */ -#define PHY_AUTO_NEG_ASYM_PAUSE 0x0800 -#define PHY_AUTO_NEG_SYM_PAUSE 0x0400 -#define PHY_AUTO_NEG_100BT4 0x0200 -#define PHY_AUTO_NEG_100BTX_FD 0x0100 -#define PHY_AUTO_NEG_100BTX 0x0080 -#define PHY_AUTO_NEG_10BT_FD 0x0040 -#define PHY_AUTO_NEG_10BT 0x0020 -#define PHY_AUTO_NEG_SELECTOR 0x001F -#define PHY_AUTO_NEG_802_3 0x0001 - -#define PHY_AUTO_NEG_PAUSE (PHY_AUTO_NEG_SYM_PAUSE | PHY_AUTO_NEG_ASYM_PAUSE) - -#define KS884X_PHY_REMOTE_CAP_OFFSET 0x0A - -/* Auto-Negotiation Link Partner Ability Register */ -#define PHY_REG_REMOTE_CAPABILITY 5 - -#define PHY_REMOTE_NEXT_PAGE 0x8000 -#define PHY_REMOTE_ACKNOWLEDGE 0x4000 -#define PHY_REMOTE_REMOTE_FAULT 0x2000 -#define PHY_REMOTE_SYM_PAUSE 0x0400 -#define PHY_REMOTE_100BTX_FD 0x0100 -#define PHY_REMOTE_100BTX 0x0080 -#define PHY_REMOTE_10BT_FD 0x0040 -#define PHY_REMOTE_10BT 0x0020 - -/* P1VCT */ -#define KS884X_P1VCT_P 0x04F0 -#define KS884X_P1PHYCTRL_P 0x04F2 - -/* P2VCT */ -#define KS884X_P2VCT_P 0x04F4 -#define KS884X_P2PHYCTRL_P 0x04F6 - -#define KS884X_PHY_SPECIAL_OFFSET KS884X_P1VCT_P -#define PHY_SPECIAL_INTERVAL (KS884X_P2VCT_P - KS884X_P1VCT_P) - -#define KS884X_PHY_LINK_MD_OFFSET 0x00 - -#define PHY_START_CABLE_DIAG 0x8000 -#define PHY_CABLE_DIAG_RESULT 0x6000 -#define PHY_CABLE_STAT_NORMAL 0x0000 -#define PHY_CABLE_STAT_OPEN 0x2000 -#define PHY_CABLE_STAT_SHORT 0x4000 -#define PHY_CABLE_STAT_FAILED 0x6000 -#define PHY_CABLE_10M_SHORT 0x1000 -#define PHY_CABLE_FAULT_COUNTER 0x01FF - -#define KS884X_PHY_PHY_CTRL_OFFSET 0x02 - -#define PHY_STAT_REVERSED_POLARITY 0x0020 -#define PHY_STAT_MDIX 0x0010 -#define PHY_FORCE_LINK 0x0008 -#define PHY_POWER_SAVING_DISABLE 0x0004 -#define PHY_REMOTE_LOOPBACK 0x0002 - -/* SIDER */ -#define KS884X_SIDER_P 0x0400 -#define KS884X_CHIP_ID_OFFSET KS884X_SIDER_P -#define KS884X_FAMILY_ID_OFFSET (KS884X_CHIP_ID_OFFSET + 1) - -#define REG_FAMILY_ID 0x88 - -#define REG_CHIP_ID_41 0x8810 -#define REG_CHIP_ID_42 0x8800 - -#define KS884X_CHIP_ID_MASK_41 0xFF10 -#define KS884X_CHIP_ID_MASK 0xFFF0 -#define KS884X_CHIP_ID_SHIFT 4 -#define KS884X_REVISION_MASK 0x000E -#define KS884X_REVISION_SHIFT 1 -#define KS8842_START 0x0001 - -#define CHIP_IP_41_M 0x8810 -#define CHIP_IP_42_M 0x8800 -#define CHIP_IP_61_M 0x8890 -#define CHIP_IP_62_M 0x8880 - -#define CHIP_IP_41_P 0x8850 -#define CHIP_IP_42_P 0x8840 -#define CHIP_IP_61_P 0x88D0 -#define CHIP_IP_62_P 0x88C0 - -/* SGCR1 */ -#define KS8842_SGCR1_P 0x0402 -#define KS8842_SWITCH_CTRL_1_OFFSET KS8842_SGCR1_P - -#define SWITCH_PASS_ALL 0x8000 -#define SWITCH_TX_FLOW_CTRL 0x2000 -#define SWITCH_RX_FLOW_CTRL 0x1000 -#define SWITCH_CHECK_LENGTH 0x0800 -#define SWITCH_AGING_ENABLE 0x0400 -#define SWITCH_FAST_AGING 0x0200 -#define SWITCH_AGGR_BACKOFF 0x0100 -#define SWITCH_PASS_PAUSE 0x0008 -#define SWITCH_LINK_AUTO_AGING 0x0001 - -/* SGCR2 */ -#define KS8842_SGCR2_P 0x0404 -#define KS8842_SWITCH_CTRL_2_OFFSET KS8842_SGCR2_P - -#define SWITCH_VLAN_ENABLE 0x8000 -#define SWITCH_IGMP_SNOOP 0x4000 -#define IPV6_MLD_SNOOP_ENABLE 0x2000 -#define IPV6_MLD_SNOOP_OPTION 0x1000 -#define PRIORITY_SCHEME_SELECT 0x0800 -#define SWITCH_MIRROR_RX_TX 0x0100 -#define UNICAST_VLAN_BOUNDARY 0x0080 -#define MULTICAST_STORM_DISABLE 0x0040 -#define SWITCH_BACK_PRESSURE 0x0020 -#define FAIR_FLOW_CTRL 0x0010 -#define NO_EXC_COLLISION_DROP 0x0008 -#define SWITCH_HUGE_PACKET 0x0004 -#define SWITCH_LEGAL_PACKET 0x0002 -#define SWITCH_BUF_RESERVE 0x0001 - -/* SGCR3 */ -#define KS8842_SGCR3_P 0x0406 -#define KS8842_SWITCH_CTRL_3_OFFSET KS8842_SGCR3_P - -#define BROADCAST_STORM_RATE_LO 0xFF00 -#define SWITCH_REPEATER 0x0080 -#define SWITCH_HALF_DUPLEX 0x0040 -#define SWITCH_FLOW_CTRL 0x0020 -#define SWITCH_10_MBIT 0x0010 -#define SWITCH_REPLACE_NULL_VID 0x0008 -#define BROADCAST_STORM_RATE_HI 0x0007 - -#define BROADCAST_STORM_RATE 0x07FF - -/* SGCR4 */ -#define KS8842_SGCR4_P 0x0408 - -/* SGCR5 */ -#define KS8842_SGCR5_P 0x040A -#define KS8842_SWITCH_CTRL_5_OFFSET KS8842_SGCR5_P - -#define LED_MODE 0x8200 -#define LED_SPEED_DUPLEX_ACT 0x0000 -#define LED_SPEED_DUPLEX_LINK_ACT 0x8000 -#define LED_DUPLEX_10_100 0x0200 - -/* SGCR6 */ -#define KS8842_SGCR6_P 0x0410 -#define KS8842_SWITCH_CTRL_6_OFFSET KS8842_SGCR6_P - -#define KS8842_PRIORITY_MASK 3 -#define KS8842_PRIORITY_SHIFT 2 - -/* SGCR7 */ -#define KS8842_SGCR7_P 0x0412 -#define KS8842_SWITCH_CTRL_7_OFFSET KS8842_SGCR7_P - -#define SWITCH_UNK_DEF_PORT_ENABLE 0x0008 -#define SWITCH_UNK_DEF_PORT_3 0x0004 -#define SWITCH_UNK_DEF_PORT_2 0x0002 -#define SWITCH_UNK_DEF_PORT_1 0x0001 - -/* MACAR1 */ -#define KS8842_MACAR1_P 0x0470 -#define KS8842_MACAR2_P 0x0472 -#define KS8842_MACAR3_P 0x0474 -#define KS8842_MAC_ADDR_1_OFFSET KS8842_MACAR1_P -#define KS8842_MAC_ADDR_0_OFFSET (KS8842_MAC_ADDR_1_OFFSET + 1) -#define KS8842_MAC_ADDR_3_OFFSET KS8842_MACAR2_P -#define KS8842_MAC_ADDR_2_OFFSET (KS8842_MAC_ADDR_3_OFFSET + 1) -#define KS8842_MAC_ADDR_5_OFFSET KS8842_MACAR3_P -#define KS8842_MAC_ADDR_4_OFFSET (KS8842_MAC_ADDR_5_OFFSET + 1) - -/* TOSR1 */ -#define KS8842_TOSR1_P 0x0480 -#define KS8842_TOSR2_P 0x0482 -#define KS8842_TOSR3_P 0x0484 -#define KS8842_TOSR4_P 0x0486 -#define KS8842_TOSR5_P 0x0488 -#define KS8842_TOSR6_P 0x048A -#define KS8842_TOSR7_P 0x0490 -#define KS8842_TOSR8_P 0x0492 -#define KS8842_TOS_1_OFFSET KS8842_TOSR1_P -#define KS8842_TOS_2_OFFSET KS8842_TOSR2_P -#define KS8842_TOS_3_OFFSET KS8842_TOSR3_P -#define KS8842_TOS_4_OFFSET KS8842_TOSR4_P -#define KS8842_TOS_5_OFFSET KS8842_TOSR5_P -#define KS8842_TOS_6_OFFSET KS8842_TOSR6_P - -#define KS8842_TOS_7_OFFSET KS8842_TOSR7_P -#define KS8842_TOS_8_OFFSET KS8842_TOSR8_P - -/* P1CR1 */ -#define KS8842_P1CR1_P 0x0500 -#define KS8842_P1CR2_P 0x0502 -#define KS8842_P1VIDR_P 0x0504 -#define KS8842_P1CR3_P 0x0506 -#define KS8842_P1IRCR_P 0x0508 -#define KS8842_P1ERCR_P 0x050A -#define KS884X_P1SCSLMD_P 0x0510 -#define KS884X_P1CR4_P 0x0512 -#define KS884X_P1SR_P 0x0514 - -/* P2CR1 */ -#define KS8842_P2CR1_P 0x0520 -#define KS8842_P2CR2_P 0x0522 -#define KS8842_P2VIDR_P 0x0524 -#define KS8842_P2CR3_P 0x0526 -#define KS8842_P2IRCR_P 0x0528 -#define KS8842_P2ERCR_P 0x052A -#define KS884X_P2SCSLMD_P 0x0530 -#define KS884X_P2CR4_P 0x0532 -#define KS884X_P2SR_P 0x0534 - -/* P3CR1 */ -#define KS8842_P3CR1_P 0x0540 -#define KS8842_P3CR2_P 0x0542 -#define KS8842_P3VIDR_P 0x0544 -#define KS8842_P3CR3_P 0x0546 -#define KS8842_P3IRCR_P 0x0548 -#define KS8842_P3ERCR_P 0x054A - -#define KS8842_PORT_1_CTRL_1 KS8842_P1CR1_P -#define KS8842_PORT_2_CTRL_1 KS8842_P2CR1_P -#define KS8842_PORT_3_CTRL_1 KS8842_P3CR1_P - -#define PORT_CTRL_ADDR(port, addr) \ - (addr = KS8842_PORT_1_CTRL_1 + (port) * \ - (KS8842_PORT_2_CTRL_1 - KS8842_PORT_1_CTRL_1)) - -#define KS8842_PORT_CTRL_1_OFFSET 0x00 - -#define PORT_BROADCAST_STORM 0x0080 -#define PORT_DIFFSERV_ENABLE 0x0040 -#define PORT_802_1P_ENABLE 0x0020 -#define PORT_BASED_PRIORITY_MASK 0x0018 -#define PORT_BASED_PRIORITY_BASE 0x0003 -#define PORT_BASED_PRIORITY_SHIFT 3 -#define PORT_BASED_PRIORITY_0 0x0000 -#define PORT_BASED_PRIORITY_1 0x0008 -#define PORT_BASED_PRIORITY_2 0x0010 -#define PORT_BASED_PRIORITY_3 0x0018 -#define PORT_INSERT_TAG 0x0004 -#define PORT_REMOVE_TAG 0x0002 -#define PORT_PRIO_QUEUE_ENABLE 0x0001 - -#define KS8842_PORT_CTRL_2_OFFSET 0x02 - -#define PORT_INGRESS_VLAN_FILTER 0x4000 -#define PORT_DISCARD_NON_VID 0x2000 -#define PORT_FORCE_FLOW_CTRL 0x1000 -#define PORT_BACK_PRESSURE 0x0800 -#define PORT_TX_ENABLE 0x0400 -#define PORT_RX_ENABLE 0x0200 -#define PORT_LEARN_DISABLE 0x0100 -#define PORT_MIRROR_SNIFFER 0x0080 -#define PORT_MIRROR_RX 0x0040 -#define PORT_MIRROR_TX 0x0020 -#define PORT_USER_PRIORITY_CEILING 0x0008 -#define PORT_VLAN_MEMBERSHIP 0x0007 - -#define KS8842_PORT_CTRL_VID_OFFSET 0x04 - -#define PORT_DEFAULT_VID 0x0001 - -#define KS8842_PORT_CTRL_3_OFFSET 0x06 - -#define PORT_INGRESS_LIMIT_MODE 0x000C -#define PORT_INGRESS_ALL 0x0000 -#define PORT_INGRESS_UNICAST 0x0004 -#define PORT_INGRESS_MULTICAST 0x0008 -#define PORT_INGRESS_BROADCAST 0x000C -#define PORT_COUNT_IFG 0x0002 -#define PORT_COUNT_PREAMBLE 0x0001 - -#define KS8842_PORT_IN_RATE_OFFSET 0x08 -#define KS8842_PORT_OUT_RATE_OFFSET 0x0A - -#define PORT_PRIORITY_RATE 0x0F -#define PORT_PRIORITY_RATE_SHIFT 4 - -#define KS884X_PORT_LINK_MD 0x10 - -#define PORT_CABLE_10M_SHORT 0x8000 -#define PORT_CABLE_DIAG_RESULT 0x6000 -#define PORT_CABLE_STAT_NORMAL 0x0000 -#define PORT_CABLE_STAT_OPEN 0x2000 -#define PORT_CABLE_STAT_SHORT 0x4000 -#define PORT_CABLE_STAT_FAILED 0x6000 -#define PORT_START_CABLE_DIAG 0x1000 -#define PORT_FORCE_LINK 0x0800 -#define PORT_POWER_SAVING_DISABLE 0x0400 -#define PORT_PHY_REMOTE_LOOPBACK 0x0200 -#define PORT_CABLE_FAULT_COUNTER 0x01FF - -#define KS884X_PORT_CTRL_4_OFFSET 0x12 - -#define PORT_LED_OFF 0x8000 -#define PORT_TX_DISABLE 0x4000 -#define PORT_AUTO_NEG_RESTART 0x2000 -#define PORT_REMOTE_FAULT_DISABLE 0x1000 -#define PORT_POWER_DOWN 0x0800 -#define PORT_AUTO_MDIX_DISABLE 0x0400 -#define PORT_FORCE_MDIX 0x0200 -#define PORT_LOOPBACK 0x0100 -#define PORT_AUTO_NEG_ENABLE 0x0080 -#define PORT_FORCE_100_MBIT 0x0040 -#define PORT_FORCE_FULL_DUPLEX 0x0020 -#define PORT_AUTO_NEG_SYM_PAUSE 0x0010 -#define PORT_AUTO_NEG_100BTX_FD 0x0008 -#define PORT_AUTO_NEG_100BTX 0x0004 -#define PORT_AUTO_NEG_10BT_FD 0x0002 -#define PORT_AUTO_NEG_10BT 0x0001 - -#define KS884X_PORT_STATUS_OFFSET 0x14 - -#define PORT_HP_MDIX 0x8000 -#define PORT_REVERSED_POLARITY 0x2000 -#define PORT_RX_FLOW_CTRL 0x0800 -#define PORT_TX_FLOW_CTRL 0x1000 -#define PORT_STATUS_SPEED_100MBIT 0x0400 -#define PORT_STATUS_FULL_DUPLEX 0x0200 -#define PORT_REMOTE_FAULT 0x0100 -#define PORT_MDIX_STATUS 0x0080 -#define PORT_AUTO_NEG_COMPLETE 0x0040 -#define PORT_STATUS_LINK_GOOD 0x0020 -#define PORT_REMOTE_SYM_PAUSE 0x0010 -#define PORT_REMOTE_100BTX_FD 0x0008 -#define PORT_REMOTE_100BTX 0x0004 -#define PORT_REMOTE_10BT_FD 0x0002 -#define PORT_REMOTE_10BT 0x0001 - -/* -#define STATIC_MAC_TABLE_ADDR 00-0000FFFF-FFFFFFFF -#define STATIC_MAC_TABLE_FWD_PORTS 00-00070000-00000000 -#define STATIC_MAC_TABLE_VALID 00-00080000-00000000 -#define STATIC_MAC_TABLE_OVERRIDE 00-00100000-00000000 -#define STATIC_MAC_TABLE_USE_FID 00-00200000-00000000 -#define STATIC_MAC_TABLE_FID 00-03C00000-00000000 -*/ - -#define STATIC_MAC_TABLE_ADDR 0x0000FFFF -#define STATIC_MAC_TABLE_FWD_PORTS 0x00070000 -#define STATIC_MAC_TABLE_VALID 0x00080000 -#define STATIC_MAC_TABLE_OVERRIDE 0x00100000 -#define STATIC_MAC_TABLE_USE_FID 0x00200000 -#define STATIC_MAC_TABLE_FID 0x03C00000 - -#define STATIC_MAC_FWD_PORTS_SHIFT 16 -#define STATIC_MAC_FID_SHIFT 22 - -/* -#define VLAN_TABLE_VID 00-00000000-00000FFF -#define VLAN_TABLE_FID 00-00000000-0000F000 -#define VLAN_TABLE_MEMBERSHIP 00-00000000-00070000 -#define VLAN_TABLE_VALID 00-00000000-00080000 -*/ - -#define VLAN_TABLE_VID 0x00000FFF -#define VLAN_TABLE_FID 0x0000F000 -#define VLAN_TABLE_MEMBERSHIP 0x00070000 -#define VLAN_TABLE_VALID 0x00080000 - -#define VLAN_TABLE_FID_SHIFT 12 -#define VLAN_TABLE_MEMBERSHIP_SHIFT 16 - -/* -#define DYNAMIC_MAC_TABLE_ADDR 00-0000FFFF-FFFFFFFF -#define DYNAMIC_MAC_TABLE_FID 00-000F0000-00000000 -#define DYNAMIC_MAC_TABLE_SRC_PORT 00-00300000-00000000 -#define DYNAMIC_MAC_TABLE_TIMESTAMP 00-00C00000-00000000 -#define DYNAMIC_MAC_TABLE_ENTRIES 03-FF000000-00000000 -#define DYNAMIC_MAC_TABLE_MAC_EMPTY 04-00000000-00000000 -#define DYNAMIC_MAC_TABLE_RESERVED 78-00000000-00000000 -#define DYNAMIC_MAC_TABLE_NOT_READY 80-00000000-00000000 -*/ - -#define DYNAMIC_MAC_TABLE_ADDR 0x0000FFFF -#define DYNAMIC_MAC_TABLE_FID 0x000F0000 -#define DYNAMIC_MAC_TABLE_SRC_PORT 0x00300000 -#define DYNAMIC_MAC_TABLE_TIMESTAMP 0x00C00000 -#define DYNAMIC_MAC_TABLE_ENTRIES 0xFF000000 - -#define DYNAMIC_MAC_TABLE_ENTRIES_H 0x03 -#define DYNAMIC_MAC_TABLE_MAC_EMPTY 0x04 -#define DYNAMIC_MAC_TABLE_RESERVED 0x78 -#define DYNAMIC_MAC_TABLE_NOT_READY 0x80 - -#define DYNAMIC_MAC_FID_SHIFT 16 -#define DYNAMIC_MAC_SRC_PORT_SHIFT 20 -#define DYNAMIC_MAC_TIMESTAMP_SHIFT 22 -#define DYNAMIC_MAC_ENTRIES_SHIFT 24 -#define DYNAMIC_MAC_ENTRIES_H_SHIFT 8 - -/* -#define MIB_COUNTER_VALUE 00-00000000-3FFFFFFF -#define MIB_COUNTER_VALID 00-00000000-40000000 -#define MIB_COUNTER_OVERFLOW 00-00000000-80000000 -*/ - -#define MIB_COUNTER_VALUE 0x3FFFFFFF -#define MIB_COUNTER_VALID 0x40000000 -#define MIB_COUNTER_OVERFLOW 0x80000000 - -#define MIB_PACKET_DROPPED 0x0000FFFF - -#define KS_MIB_PACKET_DROPPED_TX_0 0x100 -#define KS_MIB_PACKET_DROPPED_TX_1 0x101 -#define KS_MIB_PACKET_DROPPED_TX 0x102 -#define KS_MIB_PACKET_DROPPED_RX_0 0x103 -#define KS_MIB_PACKET_DROPPED_RX_1 0x104 -#define KS_MIB_PACKET_DROPPED_RX 0x105 - -/* Change default LED mode. */ -#define SET_DEFAULT_LED LED_SPEED_DUPLEX_ACT - -#define MAC_ADDR_LEN 6 -#define MAC_ADDR_ORDER(i) (MAC_ADDR_LEN - 1 - (i)) - -#define MAX_ETHERNET_BODY_SIZE 1500 -#define ETHERNET_HEADER_SIZE 14 - -#define MAX_ETHERNET_PACKET_SIZE \ - (MAX_ETHERNET_BODY_SIZE + ETHERNET_HEADER_SIZE) - -#define REGULAR_RX_BUF_SIZE (MAX_ETHERNET_PACKET_SIZE + 4) -#define MAX_RX_BUF_SIZE (1912 + 4) - -#define ADDITIONAL_ENTRIES 16 -#define MAX_MULTICAST_LIST 32 - -#define HW_MULTICAST_SIZE 8 - -#define HW_TO_DEV_PORT(port) (port - 1) - -enum { - media_connected, - media_disconnected -}; - -enum { - OID_COUNTER_UNKOWN, - - OID_COUNTER_FIRST, - - /* total transmit errors */ - OID_COUNTER_XMIT_ERROR, - - /* total receive errors */ - OID_COUNTER_RCV_ERROR, - - OID_COUNTER_LAST -}; - -/* - * Hardware descriptor definitions - */ - -#define DESC_ALIGNMENT 16 -#define BUFFER_ALIGNMENT 8 - -#define NUM_OF_RX_DESC 64 -#define NUM_OF_TX_DESC 64 - -#define KS_DESC_RX_FRAME_LEN 0x000007FF -#define KS_DESC_RX_FRAME_TYPE 0x00008000 -#define KS_DESC_RX_ERROR_CRC 0x00010000 -#define KS_DESC_RX_ERROR_RUNT 0x00020000 -#define KS_DESC_RX_ERROR_TOO_LONG 0x00040000 -#define KS_DESC_RX_ERROR_PHY 0x00080000 -#define KS884X_DESC_RX_PORT_MASK 0x00300000 -#define KS_DESC_RX_MULTICAST 0x01000000 -#define KS_DESC_RX_ERROR 0x02000000 -#define KS_DESC_RX_ERROR_CSUM_UDP 0x04000000 -#define KS_DESC_RX_ERROR_CSUM_TCP 0x08000000 -#define KS_DESC_RX_ERROR_CSUM_IP 0x10000000 -#define KS_DESC_RX_LAST 0x20000000 -#define KS_DESC_RX_FIRST 0x40000000 -#define KS_DESC_RX_ERROR_COND \ - (KS_DESC_RX_ERROR_CRC | \ - KS_DESC_RX_ERROR_RUNT | \ - KS_DESC_RX_ERROR_PHY | \ - KS_DESC_RX_ERROR_TOO_LONG) - -#define KS_DESC_HW_OWNED 0x80000000 - -#define KS_DESC_BUF_SIZE 0x000007FF -#define KS884X_DESC_TX_PORT_MASK 0x00300000 -#define KS_DESC_END_OF_RING 0x02000000 -#define KS_DESC_TX_CSUM_GEN_UDP 0x04000000 -#define KS_DESC_TX_CSUM_GEN_TCP 0x08000000 -#define KS_DESC_TX_CSUM_GEN_IP 0x10000000 -#define KS_DESC_TX_LAST 0x20000000 -#define KS_DESC_TX_FIRST 0x40000000 -#define KS_DESC_TX_INTERRUPT 0x80000000 - -#define KS_DESC_PORT_SHIFT 20 - -#define KS_DESC_RX_MASK (KS_DESC_BUF_SIZE) - -#define KS_DESC_TX_MASK \ - (KS_DESC_TX_INTERRUPT | \ - KS_DESC_TX_FIRST | \ - KS_DESC_TX_LAST | \ - KS_DESC_TX_CSUM_GEN_IP | \ - KS_DESC_TX_CSUM_GEN_TCP | \ - KS_DESC_TX_CSUM_GEN_UDP | \ - KS_DESC_BUF_SIZE) - -struct ksz_desc_rx_stat { -#ifdef __BIG_ENDIAN_BITFIELD - u32 hw_owned:1; - u32 first_desc:1; - u32 last_desc:1; - u32 csum_err_ip:1; - u32 csum_err_tcp:1; - u32 csum_err_udp:1; - u32 error:1; - u32 multicast:1; - u32 src_port:4; - u32 err_phy:1; - u32 err_too_long:1; - u32 err_runt:1; - u32 err_crc:1; - u32 frame_type:1; - u32 reserved1:4; - u32 frame_len:11; -#else - u32 frame_len:11; - u32 reserved1:4; - u32 frame_type:1; - u32 err_crc:1; - u32 err_runt:1; - u32 err_too_long:1; - u32 err_phy:1; - u32 src_port:4; - u32 multicast:1; - u32 error:1; - u32 csum_err_udp:1; - u32 csum_err_tcp:1; - u32 csum_err_ip:1; - u32 last_desc:1; - u32 first_desc:1; - u32 hw_owned:1; -#endif -}; - -struct ksz_desc_tx_stat { -#ifdef __BIG_ENDIAN_BITFIELD - u32 hw_owned:1; - u32 reserved1:31; -#else - u32 reserved1:31; - u32 hw_owned:1; -#endif -}; - -struct ksz_desc_rx_buf { -#ifdef __BIG_ENDIAN_BITFIELD - u32 reserved4:6; - u32 end_of_ring:1; - u32 reserved3:14; - u32 buf_size:11; -#else - u32 buf_size:11; - u32 reserved3:14; - u32 end_of_ring:1; - u32 reserved4:6; -#endif -}; - -struct ksz_desc_tx_buf { -#ifdef __BIG_ENDIAN_BITFIELD - u32 intr:1; - u32 first_seg:1; - u32 last_seg:1; - u32 csum_gen_ip:1; - u32 csum_gen_tcp:1; - u32 csum_gen_udp:1; - u32 end_of_ring:1; - u32 reserved4:1; - u32 dest_port:4; - u32 reserved3:9; - u32 buf_size:11; -#else - u32 buf_size:11; - u32 reserved3:9; - u32 dest_port:4; - u32 reserved4:1; - u32 end_of_ring:1; - u32 csum_gen_udp:1; - u32 csum_gen_tcp:1; - u32 csum_gen_ip:1; - u32 last_seg:1; - u32 first_seg:1; - u32 intr:1; -#endif -}; - -union desc_stat { - struct ksz_desc_rx_stat rx; - struct ksz_desc_tx_stat tx; - u32 data; -}; - -union desc_buf { - struct ksz_desc_rx_buf rx; - struct ksz_desc_tx_buf tx; - u32 data; -}; - -/** - * struct ksz_hw_desc - Hardware descriptor data structure - * @ctrl: Descriptor control value. - * @buf: Descriptor buffer value. - * @addr: Physical address of memory buffer. - * @next: Pointer to next hardware descriptor. - */ -struct ksz_hw_desc { - union desc_stat ctrl; - union desc_buf buf; - u32 addr; - u32 next; -}; - -/** - * struct ksz_sw_desc - Software descriptor data structure - * @ctrl: Descriptor control value. - * @buf: Descriptor buffer value. - * @buf_size: Current buffers size value in hardware descriptor. - */ -struct ksz_sw_desc { - union desc_stat ctrl; - union desc_buf buf; - u32 buf_size; -}; - -/** - * struct ksz_dma_buf - OS dependent DMA buffer data structure - * @skb: Associated socket buffer. - * @dma: Associated physical DMA address. - * len: Actual len used. - */ -struct ksz_dma_buf { - struct sk_buff *skb; - dma_addr_t dma; - int len; -}; - -/** - * struct ksz_desc - Descriptor structure - * @phw: Hardware descriptor pointer to uncached physical memory. - * @sw: Cached memory to hold hardware descriptor values for - * manipulation. - * @dma_buf: Operating system dependent data structure to hold physical - * memory buffer allocation information. - */ -struct ksz_desc { - struct ksz_hw_desc *phw; - struct ksz_sw_desc sw; - struct ksz_dma_buf dma_buf; -}; - -#define DMA_BUFFER(desc) ((struct ksz_dma_buf *)(&(desc)->dma_buf)) - -/** - * struct ksz_desc_info - Descriptor information data structure - * @ring: First descriptor in the ring. - * @cur: Current descriptor being manipulated. - * @ring_virt: First hardware descriptor in the ring. - * @ring_phys: The physical address of the first descriptor of the ring. - * @size: Size of hardware descriptor. - * @alloc: Number of descriptors allocated. - * @avail: Number of descriptors available for use. - * @last: Index for last descriptor released to hardware. - * @next: Index for next descriptor available for use. - * @mask: Mask for index wrapping. - */ -struct ksz_desc_info { - struct ksz_desc *ring; - struct ksz_desc *cur; - struct ksz_hw_desc *ring_virt; - u32 ring_phys; - int size; - int alloc; - int avail; - int last; - int next; - int mask; -}; - -/* - * KSZ8842 switch definitions - */ - -enum { - TABLE_STATIC_MAC = 0, - TABLE_VLAN, - TABLE_DYNAMIC_MAC, - TABLE_MIB -}; - -#define LEARNED_MAC_TABLE_ENTRIES 1024 -#define STATIC_MAC_TABLE_ENTRIES 8 - -/** - * struct ksz_mac_table - Static MAC table data structure - * @mac_addr: MAC address to filter. - * @vid: VID value. - * @fid: FID value. - * @ports: Port membership. - * @override: Override setting. - * @use_fid: FID use setting. - * @valid: Valid setting indicating the entry is being used. - */ -struct ksz_mac_table { - u8 mac_addr[MAC_ADDR_LEN]; - u16 vid; - u8 fid; - u8 ports; - u8 override:1; - u8 use_fid:1; - u8 valid:1; -}; - -#define VLAN_TABLE_ENTRIES 16 - -/** - * struct ksz_vlan_table - VLAN table data structure - * @vid: VID value. - * @fid: FID value. - * @member: Port membership. - */ -struct ksz_vlan_table { - u16 vid; - u8 fid; - u8 member; -}; - -#define DIFFSERV_ENTRIES 64 -#define PRIO_802_1P_ENTRIES 8 -#define PRIO_QUEUES 4 - -#define SWITCH_PORT_NUM 2 -#define TOTAL_PORT_NUM (SWITCH_PORT_NUM + 1) -#define HOST_MASK (1 << SWITCH_PORT_NUM) -#define PORT_MASK 7 - -#define MAIN_PORT 0 -#define OTHER_PORT 1 -#define HOST_PORT SWITCH_PORT_NUM - -#define PORT_COUNTER_NUM 0x20 -#define TOTAL_PORT_COUNTER_NUM (PORT_COUNTER_NUM + 2) - -#define MIB_COUNTER_RX_LO_PRIORITY 0x00 -#define MIB_COUNTER_RX_HI_PRIORITY 0x01 -#define MIB_COUNTER_RX_UNDERSIZE 0x02 -#define MIB_COUNTER_RX_FRAGMENT 0x03 -#define MIB_COUNTER_RX_OVERSIZE 0x04 -#define MIB_COUNTER_RX_JABBER 0x05 -#define MIB_COUNTER_RX_SYMBOL_ERR 0x06 -#define MIB_COUNTER_RX_CRC_ERR 0x07 -#define MIB_COUNTER_RX_ALIGNMENT_ERR 0x08 -#define MIB_COUNTER_RX_CTRL_8808 0x09 -#define MIB_COUNTER_RX_PAUSE 0x0A -#define MIB_COUNTER_RX_BROADCAST 0x0B -#define MIB_COUNTER_RX_MULTICAST 0x0C -#define MIB_COUNTER_RX_UNICAST 0x0D -#define MIB_COUNTER_RX_OCTET_64 0x0E -#define MIB_COUNTER_RX_OCTET_65_127 0x0F -#define MIB_COUNTER_RX_OCTET_128_255 0x10 -#define MIB_COUNTER_RX_OCTET_256_511 0x11 -#define MIB_COUNTER_RX_OCTET_512_1023 0x12 -#define MIB_COUNTER_RX_OCTET_1024_1522 0x13 -#define MIB_COUNTER_TX_LO_PRIORITY 0x14 -#define MIB_COUNTER_TX_HI_PRIORITY 0x15 -#define MIB_COUNTER_TX_LATE_COLLISION 0x16 -#define MIB_COUNTER_TX_PAUSE 0x17 -#define MIB_COUNTER_TX_BROADCAST 0x18 -#define MIB_COUNTER_TX_MULTICAST 0x19 -#define MIB_COUNTER_TX_UNICAST 0x1A -#define MIB_COUNTER_TX_DEFERRED 0x1B -#define MIB_COUNTER_TX_TOTAL_COLLISION 0x1C -#define MIB_COUNTER_TX_EXCESS_COLLISION 0x1D -#define MIB_COUNTER_TX_SINGLE_COLLISION 0x1E -#define MIB_COUNTER_TX_MULTI_COLLISION 0x1F - -#define MIB_COUNTER_RX_DROPPED_PACKET 0x20 -#define MIB_COUNTER_TX_DROPPED_PACKET 0x21 - -/** - * struct ksz_port_mib - Port MIB data structure - * @cnt_ptr: Current pointer to MIB counter index. - * @link_down: Indication the link has just gone down. - * @state: Connection status of the port. - * @mib_start: The starting counter index. Some ports do not start at 0. - * @counter: 64-bit MIB counter value. - * @dropped: Temporary buffer to remember last read packet dropped values. - * - * MIB counters needs to be read periodically so that counters do not get - * overflowed and give incorrect values. A right balance is needed to - * satisfy this condition and not waste too much CPU time. - * - * It is pointless to read MIB counters when the port is disconnected. The - * @state provides the connection status so that MIB counters are read only - * when the port is connected. The @link_down indicates the port is just - * disconnected so that all MIB counters are read one last time to update the - * information. - */ -struct ksz_port_mib { - u8 cnt_ptr; - u8 link_down; - u8 state; - u8 mib_start; - - u64 counter[TOTAL_PORT_COUNTER_NUM]; - u32 dropped[2]; -}; - -/** - * struct ksz_port_cfg - Port configuration data structure - * @vid: VID value. - * @member: Port membership. - * @port_prio: Port priority. - * @rx_rate: Receive priority rate. - * @tx_rate: Transmit priority rate. - * @stp_state: Current Spanning Tree Protocol state. - */ -struct ksz_port_cfg { - u16 vid; - u8 member; - u8 port_prio; - u32 rx_rate[PRIO_QUEUES]; - u32 tx_rate[PRIO_QUEUES]; - int stp_state; -}; - -/** - * struct ksz_switch - KSZ8842 switch data structure - * @mac_table: MAC table entries information. - * @vlan_table: VLAN table entries information. - * @port_cfg: Port configuration information. - * @diffserv: DiffServ priority settings. Possible values from 6-bit of ToS - * (bit7 ~ bit2) field. - * @p_802_1p: 802.1P priority settings. Possible values from 3-bit of 802.1p - * Tag priority field. - * @br_addr: Bridge address. Used for STP. - * @other_addr: Other MAC address. Used for multiple network device mode. - * @broad_per: Broadcast storm percentage. - * @member: Current port membership. Used for STP. - */ -struct ksz_switch { - struct ksz_mac_table mac_table[STATIC_MAC_TABLE_ENTRIES]; - struct ksz_vlan_table vlan_table[VLAN_TABLE_ENTRIES]; - struct ksz_port_cfg port_cfg[TOTAL_PORT_NUM]; - - u8 diffserv[DIFFSERV_ENTRIES]; - u8 p_802_1p[PRIO_802_1P_ENTRIES]; - - u8 br_addr[MAC_ADDR_LEN]; - u8 other_addr[MAC_ADDR_LEN]; - - u8 broad_per; - u8 member; -}; - -#define TX_RATE_UNIT 10000 - -/** - * struct ksz_port_info - Port information data structure - * @state: Connection status of the port. - * @tx_rate: Transmit rate divided by 10000 to get Mbit. - * @duplex: Duplex mode. - * @advertised: Advertised auto-negotiation setting. Used to determine link. - * @partner: Auto-negotiation partner setting. Used to determine link. - * @port_id: Port index to access actual hardware register. - * @pdev: Pointer to OS dependent network device. - */ -struct ksz_port_info { - uint state; - uint tx_rate; - u8 duplex; - u8 advertised; - u8 partner; - u8 port_id; - void *pdev; -}; - -#define MAX_TX_HELD_SIZE 52000 - -/* Hardware features and bug fixes. */ -#define LINK_INT_WORKING (1 << 0) -#define SMALL_PACKET_TX_BUG (1 << 1) -#define HALF_DUPLEX_SIGNAL_BUG (1 << 2) -#define RX_HUGE_FRAME (1 << 4) -#define STP_SUPPORT (1 << 8) - -/* Software overrides. */ -#define PAUSE_FLOW_CTRL (1 << 0) -#define FAST_AGING (1 << 1) - -/** - * struct ksz_hw - KSZ884X hardware data structure - * @io: Virtual address assigned. - * @ksz_switch: Pointer to KSZ8842 switch. - * @port_info: Port information. - * @port_mib: Port MIB information. - * @dev_count: Number of network devices this hardware supports. - * @dst_ports: Destination ports in switch for transmission. - * @id: Hardware ID. Used for display only. - * @mib_cnt: Number of MIB counters this hardware has. - * @mib_port_cnt: Number of ports with MIB counters. - * @tx_cfg: Cached transmit control settings. - * @rx_cfg: Cached receive control settings. - * @intr_mask: Current interrupt mask. - * @intr_set: Current interrup set. - * @intr_blocked: Interrupt blocked. - * @rx_desc_info: Receive descriptor information. - * @tx_desc_info: Transmit descriptor information. - * @tx_int_cnt: Transmit interrupt count. Used for TX optimization. - * @tx_int_mask: Transmit interrupt mask. Used for TX optimization. - * @tx_size: Transmit data size. Used for TX optimization. - * The maximum is defined by MAX_TX_HELD_SIZE. - * @perm_addr: Permanent MAC address. - * @override_addr: Overrided MAC address. - * @address: Additional MAC address entries. - * @addr_list_size: Additional MAC address list size. - * @mac_override: Indication of MAC address overrided. - * @promiscuous: Counter to keep track of promiscuous mode set. - * @all_multi: Counter to keep track of all multicast mode set. - * @multi_list: Multicast address entries. - * @multi_bits: Cached multicast hash table settings. - * @multi_list_size: Multicast address list size. - * @enabled: Indication of hardware enabled. - * @rx_stop: Indication of receive process stop. - * @features: Hardware features to enable. - * @overrides: Hardware features to override. - * @parent: Pointer to parent, network device private structure. - */ -struct ksz_hw { - void __iomem *io; - - struct ksz_switch *ksz_switch; - struct ksz_port_info port_info[SWITCH_PORT_NUM]; - struct ksz_port_mib port_mib[TOTAL_PORT_NUM]; - int dev_count; - int dst_ports; - int id; - int mib_cnt; - int mib_port_cnt; - - u32 tx_cfg; - u32 rx_cfg; - u32 intr_mask; - u32 intr_set; - uint intr_blocked; - - struct ksz_desc_info rx_desc_info; - struct ksz_desc_info tx_desc_info; - - int tx_int_cnt; - int tx_int_mask; - int tx_size; - - u8 perm_addr[MAC_ADDR_LEN]; - u8 override_addr[MAC_ADDR_LEN]; - u8 address[ADDITIONAL_ENTRIES][MAC_ADDR_LEN]; - u8 addr_list_size; - u8 mac_override; - u8 promiscuous; - u8 all_multi; - u8 multi_list[MAX_MULTICAST_LIST][MAC_ADDR_LEN]; - u8 multi_bits[HW_MULTICAST_SIZE]; - u8 multi_list_size; - - u8 enabled; - u8 rx_stop; - u8 reserved2[1]; - - uint features; - uint overrides; - - void *parent; -}; - -enum { - PHY_NO_FLOW_CTRL, - PHY_FLOW_CTRL, - PHY_TX_ONLY, - PHY_RX_ONLY -}; - -/** - * struct ksz_port - Virtual port data structure - * @duplex: Duplex mode setting. 1 for half duplex, 2 for full - * duplex, and 0 for auto, which normally results in full - * duplex. - * @speed: Speed setting. 10 for 10 Mbit, 100 for 100 Mbit, and - * 0 for auto, which normally results in 100 Mbit. - * @force_link: Force link setting. 0 for auto-negotiation, and 1 for - * force. - * @flow_ctrl: Flow control setting. PHY_NO_FLOW_CTRL for no flow - * control, and PHY_FLOW_CTRL for flow control. - * PHY_TX_ONLY and PHY_RX_ONLY are not supported for 100 - * Mbit PHY. - * @first_port: Index of first port this port supports. - * @mib_port_cnt: Number of ports with MIB counters. - * @port_cnt: Number of ports this port supports. - * @counter: Port statistics counter. - * @hw: Pointer to hardware structure. - * @linked: Pointer to port information linked to this port. - */ -struct ksz_port { - u8 duplex; - u8 speed; - u8 force_link; - u8 flow_ctrl; - - int first_port; - int mib_port_cnt; - int port_cnt; - u64 counter[OID_COUNTER_LAST]; - - struct ksz_hw *hw; - struct ksz_port_info *linked; -}; - -/** - * struct ksz_timer_info - Timer information data structure - * @timer: Kernel timer. - * @cnt: Running timer counter. - * @max: Number of times to run timer; -1 for infinity. - * @period: Timer period in jiffies. - */ -struct ksz_timer_info { - struct timer_list timer; - int cnt; - int max; - int period; -}; - -/** - * struct ksz_shared_mem - OS dependent shared memory data structure - * @dma_addr: Physical DMA address allocated. - * @alloc_size: Allocation size. - * @phys: Actual physical address used. - * @alloc_virt: Virtual address allocated. - * @virt: Actual virtual address used. - */ -struct ksz_shared_mem { - dma_addr_t dma_addr; - uint alloc_size; - uint phys; - u8 *alloc_virt; - u8 *virt; -}; - -/** - * struct ksz_counter_info - OS dependent counter information data structure - * @counter: Wait queue to wakeup after counters are read. - * @time: Next time in jiffies to read counter. - * @read: Indication of counters read in full or not. - */ -struct ksz_counter_info { - wait_queue_head_t counter; - unsigned long time; - int read; -}; - -/** - * struct dev_info - Network device information data structure - * @dev: Pointer to network device. - * @pdev: Pointer to PCI device. - * @hw: Hardware structure. - * @desc_pool: Physical memory used for descriptor pool. - * @hwlock: Spinlock to prevent hardware from accessing. - * @lock: Mutex lock to prevent device from accessing. - * @dev_rcv: Receive process function used. - * @last_skb: Socket buffer allocated for descriptor rx fragments. - * @skb_index: Buffer index for receiving fragments. - * @skb_len: Buffer length for receiving fragments. - * @mib_read: Workqueue to read MIB counters. - * @mib_timer_info: Timer to read MIB counters. - * @counter: Used for MIB reading. - * @mtu: Current MTU used. The default is REGULAR_RX_BUF_SIZE; - * the maximum is MAX_RX_BUF_SIZE. - * @opened: Counter to keep track of device open. - * @rx_tasklet: Receive processing tasklet. - * @tx_tasklet: Transmit processing tasklet. - * @wol_enable: Wake-on-LAN enable set by ethtool. - * @wol_support: Wake-on-LAN support used by ethtool. - * @pme_wait: Used for KSZ8841 power management. - */ -struct dev_info { - struct net_device *dev; - struct pci_dev *pdev; - - struct ksz_hw hw; - struct ksz_shared_mem desc_pool; - - spinlock_t hwlock; - struct mutex lock; - - int (*dev_rcv)(struct dev_info *); - - struct sk_buff *last_skb; - int skb_index; - int skb_len; - - struct work_struct mib_read; - struct ksz_timer_info mib_timer_info; - struct ksz_counter_info counter[TOTAL_PORT_NUM]; - - int mtu; - int opened; - - struct tasklet_struct rx_tasklet; - struct tasklet_struct tx_tasklet; - - int wol_enable; - int wol_support; - unsigned long pme_wait; -}; - -/** - * struct dev_priv - Network device private data structure - * @adapter: Adapter device information. - * @port: Port information. - * @monitor_time_info: Timer to monitor ports. - * @proc_sem: Semaphore for proc accessing. - * @id: Device ID. - * @mii_if: MII interface information. - * @advertising: Temporary variable to store advertised settings. - * @msg_enable: The message flags controlling driver output. - * @media_state: The connection status of the device. - * @multicast: The all multicast state of the device. - * @promiscuous: The promiscuous state of the device. - */ -struct dev_priv { - struct dev_info *adapter; - struct ksz_port port; - struct ksz_timer_info monitor_timer_info; - - struct semaphore proc_sem; - int id; - - struct mii_if_info mii_if; - u32 advertising; - - u32 msg_enable; - int media_state; - int multicast; - int promiscuous; -}; - -#define DRV_NAME "KSZ884X PCI" -#define DEVICE_NAME "KSZ884x PCI" -#define DRV_VERSION "1.0.0" -#define DRV_RELDATE "Feb 8, 2010" - -static char version[] __devinitdata = - "Micrel " DEVICE_NAME " " DRV_VERSION " (" DRV_RELDATE ")"; - -static u8 DEFAULT_MAC_ADDRESS[] = { 0x00, 0x10, 0xA1, 0x88, 0x42, 0x01 }; - -/* - * Interrupt processing primary routines - */ - -static inline void hw_ack_intr(struct ksz_hw *hw, uint interrupt) -{ - writel(interrupt, hw->io + KS884X_INTERRUPTS_STATUS); -} - -static inline void hw_dis_intr(struct ksz_hw *hw) -{ - hw->intr_blocked = hw->intr_mask; - writel(0, hw->io + KS884X_INTERRUPTS_ENABLE); - hw->intr_set = readl(hw->io + KS884X_INTERRUPTS_ENABLE); -} - -static inline void hw_set_intr(struct ksz_hw *hw, uint interrupt) -{ - hw->intr_set = interrupt; - writel(interrupt, hw->io + KS884X_INTERRUPTS_ENABLE); -} - -static inline void hw_ena_intr(struct ksz_hw *hw) -{ - hw->intr_blocked = 0; - hw_set_intr(hw, hw->intr_mask); -} - -static inline void hw_dis_intr_bit(struct ksz_hw *hw, uint bit) -{ - hw->intr_mask &= ~(bit); -} - -static inline void hw_turn_off_intr(struct ksz_hw *hw, uint interrupt) -{ - u32 read_intr; - - read_intr = readl(hw->io + KS884X_INTERRUPTS_ENABLE); - hw->intr_set = read_intr & ~interrupt; - writel(hw->intr_set, hw->io + KS884X_INTERRUPTS_ENABLE); - hw_dis_intr_bit(hw, interrupt); -} - -/** - * hw_turn_on_intr - turn on specified interrupts - * @hw: The hardware instance. - * @bit: The interrupt bits to be on. - * - * This routine turns on the specified interrupts in the interrupt mask so that - * those interrupts will be enabled. - */ -static void hw_turn_on_intr(struct ksz_hw *hw, u32 bit) -{ - hw->intr_mask |= bit; - - if (!hw->intr_blocked) - hw_set_intr(hw, hw->intr_mask); -} - -static inline void hw_ena_intr_bit(struct ksz_hw *hw, uint interrupt) -{ - u32 read_intr; - - read_intr = readl(hw->io + KS884X_INTERRUPTS_ENABLE); - hw->intr_set = read_intr | interrupt; - writel(hw->intr_set, hw->io + KS884X_INTERRUPTS_ENABLE); -} - -static inline void hw_read_intr(struct ksz_hw *hw, uint *status) -{ - *status = readl(hw->io + KS884X_INTERRUPTS_STATUS); - *status = *status & hw->intr_set; -} - -static inline void hw_restore_intr(struct ksz_hw *hw, uint interrupt) -{ - if (interrupt) - hw_ena_intr(hw); -} - -/** - * hw_block_intr - block hardware interrupts - * - * This function blocks all interrupts of the hardware and returns the current - * interrupt enable mask so that interrupts can be restored later. - * - * Return the current interrupt enable mask. - */ -static uint hw_block_intr(struct ksz_hw *hw) -{ - uint interrupt = 0; - - if (!hw->intr_blocked) { - hw_dis_intr(hw); - interrupt = hw->intr_blocked; - } - return interrupt; -} - -/* - * Hardware descriptor routines - */ - -static inline void reset_desc(struct ksz_desc *desc, union desc_stat status) -{ - status.rx.hw_owned = 0; - desc->phw->ctrl.data = cpu_to_le32(status.data); -} - -static inline void release_desc(struct ksz_desc *desc) -{ - desc->sw.ctrl.tx.hw_owned = 1; - if (desc->sw.buf_size != desc->sw.buf.data) { - desc->sw.buf_size = desc->sw.buf.data; - desc->phw->buf.data = cpu_to_le32(desc->sw.buf.data); - } - desc->phw->ctrl.data = cpu_to_le32(desc->sw.ctrl.data); -} - -static void get_rx_pkt(struct ksz_desc_info *info, struct ksz_desc **desc) -{ - *desc = &info->ring[info->last]; - info->last++; - info->last &= info->mask; - info->avail--; - (*desc)->sw.buf.data &= ~KS_DESC_RX_MASK; -} - -static inline void set_rx_buf(struct ksz_desc *desc, u32 addr) -{ - desc->phw->addr = cpu_to_le32(addr); -} - -static inline void set_rx_len(struct ksz_desc *desc, u32 len) -{ - desc->sw.buf.rx.buf_size = len; -} - -static inline void get_tx_pkt(struct ksz_desc_info *info, - struct ksz_desc **desc) -{ - *desc = &info->ring[info->next]; - info->next++; - info->next &= info->mask; - info->avail--; - (*desc)->sw.buf.data &= ~KS_DESC_TX_MASK; -} - -static inline void set_tx_buf(struct ksz_desc *desc, u32 addr) -{ - desc->phw->addr = cpu_to_le32(addr); -} - -static inline void set_tx_len(struct ksz_desc *desc, u32 len) -{ - desc->sw.buf.tx.buf_size = len; -} - -/* Switch functions */ - -#define TABLE_READ 0x10 -#define TABLE_SEL_SHIFT 2 - -#define HW_DELAY(hw, reg) \ - do { \ - u16 dummy; \ - dummy = readw(hw->io + reg); \ - } while (0) - -/** - * sw_r_table - read 4 bytes of data from switch table - * @hw: The hardware instance. - * @table: The table selector. - * @addr: The address of the table entry. - * @data: Buffer to store the read data. - * - * This routine reads 4 bytes of data from the table of the switch. - * Hardware interrupts are disabled to minimize corruption of read data. - */ -static void sw_r_table(struct ksz_hw *hw, int table, u16 addr, u32 *data) -{ - u16 ctrl_addr; - uint interrupt; - - ctrl_addr = (((table << TABLE_SEL_SHIFT) | TABLE_READ) << 8) | addr; - - interrupt = hw_block_intr(hw); - - writew(ctrl_addr, hw->io + KS884X_IACR_OFFSET); - HW_DELAY(hw, KS884X_IACR_OFFSET); - *data = readl(hw->io + KS884X_ACC_DATA_0_OFFSET); - - hw_restore_intr(hw, interrupt); -} - -/** - * sw_w_table_64 - write 8 bytes of data to the switch table - * @hw: The hardware instance. - * @table: The table selector. - * @addr: The address of the table entry. - * @data_hi: The high part of data to be written (bit63 ~ bit32). - * @data_lo: The low part of data to be written (bit31 ~ bit0). - * - * This routine writes 8 bytes of data to the table of the switch. - * Hardware interrupts are disabled to minimize corruption of written data. - */ -static void sw_w_table_64(struct ksz_hw *hw, int table, u16 addr, u32 data_hi, - u32 data_lo) -{ - u16 ctrl_addr; - uint interrupt; - - ctrl_addr = ((table << TABLE_SEL_SHIFT) << 8) | addr; - - interrupt = hw_block_intr(hw); - - writel(data_hi, hw->io + KS884X_ACC_DATA_4_OFFSET); - writel(data_lo, hw->io + KS884X_ACC_DATA_0_OFFSET); - - writew(ctrl_addr, hw->io + KS884X_IACR_OFFSET); - HW_DELAY(hw, KS884X_IACR_OFFSET); - - hw_restore_intr(hw, interrupt); -} - -/** - * sw_w_sta_mac_table - write to the static MAC table - * @hw: The hardware instance. - * @addr: The address of the table entry. - * @mac_addr: The MAC address. - * @ports: The port members. - * @override: The flag to override the port receive/transmit settings. - * @valid: The flag to indicate entry is valid. - * @use_fid: The flag to indicate the FID is valid. - * @fid: The FID value. - * - * This routine writes an entry of the static MAC table of the switch. It - * calls sw_w_table_64() to write the data. - */ -static void sw_w_sta_mac_table(struct ksz_hw *hw, u16 addr, u8 *mac_addr, - u8 ports, int override, int valid, int use_fid, u8 fid) -{ - u32 data_hi; - u32 data_lo; - - data_lo = ((u32) mac_addr[2] << 24) | - ((u32) mac_addr[3] << 16) | - ((u32) mac_addr[4] << 8) | mac_addr[5]; - data_hi = ((u32) mac_addr[0] << 8) | mac_addr[1]; - data_hi |= (u32) ports << STATIC_MAC_FWD_PORTS_SHIFT; - - if (override) - data_hi |= STATIC_MAC_TABLE_OVERRIDE; - if (use_fid) { - data_hi |= STATIC_MAC_TABLE_USE_FID; - data_hi |= (u32) fid << STATIC_MAC_FID_SHIFT; - } - if (valid) - data_hi |= STATIC_MAC_TABLE_VALID; - - sw_w_table_64(hw, TABLE_STATIC_MAC, addr, data_hi, data_lo); -} - -/** - * sw_r_vlan_table - read from the VLAN table - * @hw: The hardware instance. - * @addr: The address of the table entry. - * @vid: Buffer to store the VID. - * @fid: Buffer to store the VID. - * @member: Buffer to store the port membership. - * - * This function reads an entry of the VLAN table of the switch. It calls - * sw_r_table() to get the data. - * - * Return 0 if the entry is valid; otherwise -1. - */ -static int sw_r_vlan_table(struct ksz_hw *hw, u16 addr, u16 *vid, u8 *fid, - u8 *member) -{ - u32 data; - - sw_r_table(hw, TABLE_VLAN, addr, &data); - if (data & VLAN_TABLE_VALID) { - *vid = (u16)(data & VLAN_TABLE_VID); - *fid = (u8)((data & VLAN_TABLE_FID) >> VLAN_TABLE_FID_SHIFT); - *member = (u8)((data & VLAN_TABLE_MEMBERSHIP) >> - VLAN_TABLE_MEMBERSHIP_SHIFT); - return 0; - } - return -1; -} - -/** - * port_r_mib_cnt - read MIB counter - * @hw: The hardware instance. - * @port: The port index. - * @addr: The address of the counter. - * @cnt: Buffer to store the counter. - * - * This routine reads a MIB counter of the port. - * Hardware interrupts are disabled to minimize corruption of read data. - */ -static void port_r_mib_cnt(struct ksz_hw *hw, int port, u16 addr, u64 *cnt) -{ - u32 data; - u16 ctrl_addr; - uint interrupt; - int timeout; - - ctrl_addr = addr + PORT_COUNTER_NUM * port; - - interrupt = hw_block_intr(hw); - - ctrl_addr |= (((TABLE_MIB << TABLE_SEL_SHIFT) | TABLE_READ) << 8); - writew(ctrl_addr, hw->io + KS884X_IACR_OFFSET); - HW_DELAY(hw, KS884X_IACR_OFFSET); - - for (timeout = 100; timeout > 0; timeout--) { - data = readl(hw->io + KS884X_ACC_DATA_0_OFFSET); - - if (data & MIB_COUNTER_VALID) { - if (data & MIB_COUNTER_OVERFLOW) - *cnt += MIB_COUNTER_VALUE + 1; - *cnt += data & MIB_COUNTER_VALUE; - break; - } - } - - hw_restore_intr(hw, interrupt); -} - -/** - * port_r_mib_pkt - read dropped packet counts - * @hw: The hardware instance. - * @port: The port index. - * @cnt: Buffer to store the receive and transmit dropped packet counts. - * - * This routine reads the dropped packet counts of the port. - * Hardware interrupts are disabled to minimize corruption of read data. - */ -static void port_r_mib_pkt(struct ksz_hw *hw, int port, u32 *last, u64 *cnt) -{ - u32 cur; - u32 data; - u16 ctrl_addr; - uint interrupt; - int index; - - index = KS_MIB_PACKET_DROPPED_RX_0 + port; - do { - interrupt = hw_block_intr(hw); - - ctrl_addr = (u16) index; - ctrl_addr |= (((TABLE_MIB << TABLE_SEL_SHIFT) | TABLE_READ) - << 8); - writew(ctrl_addr, hw->io + KS884X_IACR_OFFSET); - HW_DELAY(hw, KS884X_IACR_OFFSET); - data = readl(hw->io + KS884X_ACC_DATA_0_OFFSET); - - hw_restore_intr(hw, interrupt); - - data &= MIB_PACKET_DROPPED; - cur = *last; - if (data != cur) { - *last = data; - if (data < cur) - data += MIB_PACKET_DROPPED + 1; - data -= cur; - *cnt += data; - } - ++last; - ++cnt; - index -= KS_MIB_PACKET_DROPPED_TX - - KS_MIB_PACKET_DROPPED_TX_0 + 1; - } while (index >= KS_MIB_PACKET_DROPPED_TX_0 + port); -} - -/** - * port_r_cnt - read MIB counters periodically - * @hw: The hardware instance. - * @port: The port index. - * - * This routine is used to read the counters of the port periodically to avoid - * counter overflow. The hardware should be acquired first before calling this - * routine. - * - * Return non-zero when not all counters not read. - */ -static int port_r_cnt(struct ksz_hw *hw, int port) -{ - struct ksz_port_mib *mib = &hw->port_mib[port]; - - if (mib->mib_start < PORT_COUNTER_NUM) - while (mib->cnt_ptr < PORT_COUNTER_NUM) { - port_r_mib_cnt(hw, port, mib->cnt_ptr, - &mib->counter[mib->cnt_ptr]); - ++mib->cnt_ptr; - } - if (hw->mib_cnt > PORT_COUNTER_NUM) - port_r_mib_pkt(hw, port, mib->dropped, - &mib->counter[PORT_COUNTER_NUM]); - mib->cnt_ptr = 0; - return 0; -} - -/** - * port_init_cnt - initialize MIB counter values - * @hw: The hardware instance. - * @port: The port index. - * - * This routine is used to initialize all counters to zero if the hardware - * cannot do it after reset. - */ -static void port_init_cnt(struct ksz_hw *hw, int port) -{ - struct ksz_port_mib *mib = &hw->port_mib[port]; - - mib->cnt_ptr = 0; - if (mib->mib_start < PORT_COUNTER_NUM) - do { - port_r_mib_cnt(hw, port, mib->cnt_ptr, - &mib->counter[mib->cnt_ptr]); - ++mib->cnt_ptr; - } while (mib->cnt_ptr < PORT_COUNTER_NUM); - if (hw->mib_cnt > PORT_COUNTER_NUM) - port_r_mib_pkt(hw, port, mib->dropped, - &mib->counter[PORT_COUNTER_NUM]); - memset((void *) mib->counter, 0, sizeof(u64) * TOTAL_PORT_COUNTER_NUM); - mib->cnt_ptr = 0; -} - -/* - * Port functions - */ - -/** - * port_chk - check port register bits - * @hw: The hardware instance. - * @port: The port index. - * @offset: The offset of the port register. - * @bits: The data bits to check. - * - * This function checks whether the specified bits of the port register are set - * or not. - * - * Return 0 if the bits are not set. - */ -static int port_chk(struct ksz_hw *hw, int port, int offset, u16 bits) -{ - u32 addr; - u16 data; - - PORT_CTRL_ADDR(port, addr); - addr += offset; - data = readw(hw->io + addr); - return (data & bits) == bits; -} - -/** - * port_cfg - set port register bits - * @hw: The hardware instance. - * @port: The port index. - * @offset: The offset of the port register. - * @bits: The data bits to set. - * @set: The flag indicating whether the bits are to be set or not. - * - * This routine sets or resets the specified bits of the port register. - */ -static void port_cfg(struct ksz_hw *hw, int port, int offset, u16 bits, - int set) -{ - u32 addr; - u16 data; - - PORT_CTRL_ADDR(port, addr); - addr += offset; - data = readw(hw->io + addr); - if (set) - data |= bits; - else - data &= ~bits; - writew(data, hw->io + addr); -} - -/** - * port_chk_shift - check port bit - * @hw: The hardware instance. - * @port: The port index. - * @offset: The offset of the register. - * @shift: Number of bits to shift. - * - * This function checks whether the specified port is set in the register or - * not. - * - * Return 0 if the port is not set. - */ -static int port_chk_shift(struct ksz_hw *hw, int port, u32 addr, int shift) -{ - u16 data; - u16 bit = 1 << port; - - data = readw(hw->io + addr); - data >>= shift; - return (data & bit) == bit; -} - -/** - * port_cfg_shift - set port bit - * @hw: The hardware instance. - * @port: The port index. - * @offset: The offset of the register. - * @shift: Number of bits to shift. - * @set: The flag indicating whether the port is to be set or not. - * - * This routine sets or resets the specified port in the register. - */ -static void port_cfg_shift(struct ksz_hw *hw, int port, u32 addr, int shift, - int set) -{ - u16 data; - u16 bits = 1 << port; - - data = readw(hw->io + addr); - bits <<= shift; - if (set) - data |= bits; - else - data &= ~bits; - writew(data, hw->io + addr); -} - -/** - * port_r8 - read byte from port register - * @hw: The hardware instance. - * @port: The port index. - * @offset: The offset of the port register. - * @data: Buffer to store the data. - * - * This routine reads a byte from the port register. - */ -static void port_r8(struct ksz_hw *hw, int port, int offset, u8 *data) -{ - u32 addr; - - PORT_CTRL_ADDR(port, addr); - addr += offset; - *data = readb(hw->io + addr); -} - -/** - * port_r16 - read word from port register. - * @hw: The hardware instance. - * @port: The port index. - * @offset: The offset of the port register. - * @data: Buffer to store the data. - * - * This routine reads a word from the port register. - */ -static void port_r16(struct ksz_hw *hw, int port, int offset, u16 *data) -{ - u32 addr; - - PORT_CTRL_ADDR(port, addr); - addr += offset; - *data = readw(hw->io + addr); -} - -/** - * port_w16 - write word to port register. - * @hw: The hardware instance. - * @port: The port index. - * @offset: The offset of the port register. - * @data: Data to write. - * - * This routine writes a word to the port register. - */ -static void port_w16(struct ksz_hw *hw, int port, int offset, u16 data) -{ - u32 addr; - - PORT_CTRL_ADDR(port, addr); - addr += offset; - writew(data, hw->io + addr); -} - -/** - * sw_chk - check switch register bits - * @hw: The hardware instance. - * @addr: The address of the switch register. - * @bits: The data bits to check. - * - * This function checks whether the specified bits of the switch register are - * set or not. - * - * Return 0 if the bits are not set. - */ -static int sw_chk(struct ksz_hw *hw, u32 addr, u16 bits) -{ - u16 data; - - data = readw(hw->io + addr); - return (data & bits) == bits; -} - -/** - * sw_cfg - set switch register bits - * @hw: The hardware instance. - * @addr: The address of the switch register. - * @bits: The data bits to set. - * @set: The flag indicating whether the bits are to be set or not. - * - * This function sets or resets the specified bits of the switch register. - */ -static void sw_cfg(struct ksz_hw *hw, u32 addr, u16 bits, int set) -{ - u16 data; - - data = readw(hw->io + addr); - if (set) - data |= bits; - else - data &= ~bits; - writew(data, hw->io + addr); -} - -/* Bandwidth */ - -static inline void port_cfg_broad_storm(struct ksz_hw *hw, int p, int set) -{ - port_cfg(hw, p, - KS8842_PORT_CTRL_1_OFFSET, PORT_BROADCAST_STORM, set); -} - -static inline int port_chk_broad_storm(struct ksz_hw *hw, int p) -{ - return port_chk(hw, p, - KS8842_PORT_CTRL_1_OFFSET, PORT_BROADCAST_STORM); -} - -/* Driver set switch broadcast storm protection at 10% rate. */ -#define BROADCAST_STORM_PROTECTION_RATE 10 - -/* 148,800 frames * 67 ms / 100 */ -#define BROADCAST_STORM_VALUE 9969 - -/** - * sw_cfg_broad_storm - configure broadcast storm threshold - * @hw: The hardware instance. - * @percent: Broadcast storm threshold in percent of transmit rate. - * - * This routine configures the broadcast storm threshold of the switch. - */ -static void sw_cfg_broad_storm(struct ksz_hw *hw, u8 percent) -{ - u16 data; - u32 value = ((u32) BROADCAST_STORM_VALUE * (u32) percent / 100); - - if (value > BROADCAST_STORM_RATE) - value = BROADCAST_STORM_RATE; - - data = readw(hw->io + KS8842_SWITCH_CTRL_3_OFFSET); - data &= ~(BROADCAST_STORM_RATE_LO | BROADCAST_STORM_RATE_HI); - data |= ((value & 0x00FF) << 8) | ((value & 0xFF00) >> 8); - writew(data, hw->io + KS8842_SWITCH_CTRL_3_OFFSET); -} - -/** - * sw_get_board_storm - get broadcast storm threshold - * @hw: The hardware instance. - * @percent: Buffer to store the broadcast storm threshold percentage. - * - * This routine retrieves the broadcast storm threshold of the switch. - */ -static void sw_get_broad_storm(struct ksz_hw *hw, u8 *percent) -{ - int num; - u16 data; - - data = readw(hw->io + KS8842_SWITCH_CTRL_3_OFFSET); - num = (data & BROADCAST_STORM_RATE_HI); - num <<= 8; - num |= (data & BROADCAST_STORM_RATE_LO) >> 8; - num = (num * 100 + BROADCAST_STORM_VALUE / 2) / BROADCAST_STORM_VALUE; - *percent = (u8) num; -} - -/** - * sw_dis_broad_storm - disable broadstorm - * @hw: The hardware instance. - * @port: The port index. - * - * This routine disables the broadcast storm limit function of the switch. - */ -static void sw_dis_broad_storm(struct ksz_hw *hw, int port) -{ - port_cfg_broad_storm(hw, port, 0); -} - -/** - * sw_ena_broad_storm - enable broadcast storm - * @hw: The hardware instance. - * @port: The port index. - * - * This routine enables the broadcast storm limit function of the switch. - */ -static void sw_ena_broad_storm(struct ksz_hw *hw, int port) -{ - sw_cfg_broad_storm(hw, hw->ksz_switch->broad_per); - port_cfg_broad_storm(hw, port, 1); -} - -/** - * sw_init_broad_storm - initialize broadcast storm - * @hw: The hardware instance. - * - * This routine initializes the broadcast storm limit function of the switch. - */ -static void sw_init_broad_storm(struct ksz_hw *hw) -{ - int port; - - hw->ksz_switch->broad_per = 1; - sw_cfg_broad_storm(hw, hw->ksz_switch->broad_per); - for (port = 0; port < TOTAL_PORT_NUM; port++) - sw_dis_broad_storm(hw, port); - sw_cfg(hw, KS8842_SWITCH_CTRL_2_OFFSET, MULTICAST_STORM_DISABLE, 1); -} - -/** - * hw_cfg_broad_storm - configure broadcast storm - * @hw: The hardware instance. - * @percent: Broadcast storm threshold in percent of transmit rate. - * - * This routine configures the broadcast storm threshold of the switch. - * It is called by user functions. The hardware should be acquired first. - */ -static void hw_cfg_broad_storm(struct ksz_hw *hw, u8 percent) -{ - if (percent > 100) - percent = 100; - - sw_cfg_broad_storm(hw, percent); - sw_get_broad_storm(hw, &percent); - hw->ksz_switch->broad_per = percent; -} - -/** - * sw_dis_prio_rate - disable switch priority rate - * @hw: The hardware instance. - * @port: The port index. - * - * This routine disables the priority rate function of the switch. - */ -static void sw_dis_prio_rate(struct ksz_hw *hw, int port) -{ - u32 addr; - - PORT_CTRL_ADDR(port, addr); - addr += KS8842_PORT_IN_RATE_OFFSET; - writel(0, hw->io + addr); -} - -/** - * sw_init_prio_rate - initialize switch prioirty rate - * @hw: The hardware instance. - * - * This routine initializes the priority rate function of the switch. - */ -static void sw_init_prio_rate(struct ksz_hw *hw) -{ - int port; - int prio; - struct ksz_switch *sw = hw->ksz_switch; - - for (port = 0; port < TOTAL_PORT_NUM; port++) { - for (prio = 0; prio < PRIO_QUEUES; prio++) { - sw->port_cfg[port].rx_rate[prio] = - sw->port_cfg[port].tx_rate[prio] = 0; - } - sw_dis_prio_rate(hw, port); - } -} - -/* Communication */ - -static inline void port_cfg_back_pressure(struct ksz_hw *hw, int p, int set) -{ - port_cfg(hw, p, - KS8842_PORT_CTRL_2_OFFSET, PORT_BACK_PRESSURE, set); -} - -static inline void port_cfg_force_flow_ctrl(struct ksz_hw *hw, int p, int set) -{ - port_cfg(hw, p, - KS8842_PORT_CTRL_2_OFFSET, PORT_FORCE_FLOW_CTRL, set); -} - -static inline int port_chk_back_pressure(struct ksz_hw *hw, int p) -{ - return port_chk(hw, p, - KS8842_PORT_CTRL_2_OFFSET, PORT_BACK_PRESSURE); -} - -static inline int port_chk_force_flow_ctrl(struct ksz_hw *hw, int p) -{ - return port_chk(hw, p, - KS8842_PORT_CTRL_2_OFFSET, PORT_FORCE_FLOW_CTRL); -} - -/* Spanning Tree */ - -static inline void port_cfg_dis_learn(struct ksz_hw *hw, int p, int set) -{ - port_cfg(hw, p, - KS8842_PORT_CTRL_2_OFFSET, PORT_LEARN_DISABLE, set); -} - -static inline void port_cfg_rx(struct ksz_hw *hw, int p, int set) -{ - port_cfg(hw, p, - KS8842_PORT_CTRL_2_OFFSET, PORT_RX_ENABLE, set); -} - -static inline void port_cfg_tx(struct ksz_hw *hw, int p, int set) -{ - port_cfg(hw, p, - KS8842_PORT_CTRL_2_OFFSET, PORT_TX_ENABLE, set); -} - -static inline void sw_cfg_fast_aging(struct ksz_hw *hw, int set) -{ - sw_cfg(hw, KS8842_SWITCH_CTRL_1_OFFSET, SWITCH_FAST_AGING, set); -} - -static inline void sw_flush_dyn_mac_table(struct ksz_hw *hw) -{ - if (!(hw->overrides & FAST_AGING)) { - sw_cfg_fast_aging(hw, 1); - mdelay(1); - sw_cfg_fast_aging(hw, 0); - } -} - -/* VLAN */ - -static inline void port_cfg_ins_tag(struct ksz_hw *hw, int p, int insert) -{ - port_cfg(hw, p, - KS8842_PORT_CTRL_1_OFFSET, PORT_INSERT_TAG, insert); -} - -static inline void port_cfg_rmv_tag(struct ksz_hw *hw, int p, int remove) -{ - port_cfg(hw, p, - KS8842_PORT_CTRL_1_OFFSET, PORT_REMOVE_TAG, remove); -} - -static inline int port_chk_ins_tag(struct ksz_hw *hw, int p) -{ - return port_chk(hw, p, - KS8842_PORT_CTRL_1_OFFSET, PORT_INSERT_TAG); -} - -static inline int port_chk_rmv_tag(struct ksz_hw *hw, int p) -{ - return port_chk(hw, p, - KS8842_PORT_CTRL_1_OFFSET, PORT_REMOVE_TAG); -} - -static inline void port_cfg_dis_non_vid(struct ksz_hw *hw, int p, int set) -{ - port_cfg(hw, p, - KS8842_PORT_CTRL_2_OFFSET, PORT_DISCARD_NON_VID, set); -} - -static inline void port_cfg_in_filter(struct ksz_hw *hw, int p, int set) -{ - port_cfg(hw, p, - KS8842_PORT_CTRL_2_OFFSET, PORT_INGRESS_VLAN_FILTER, set); -} - -static inline int port_chk_dis_non_vid(struct ksz_hw *hw, int p) -{ - return port_chk(hw, p, - KS8842_PORT_CTRL_2_OFFSET, PORT_DISCARD_NON_VID); -} - -static inline int port_chk_in_filter(struct ksz_hw *hw, int p) -{ - return port_chk(hw, p, - KS8842_PORT_CTRL_2_OFFSET, PORT_INGRESS_VLAN_FILTER); -} - -/* Mirroring */ - -static inline void port_cfg_mirror_sniffer(struct ksz_hw *hw, int p, int set) -{ - port_cfg(hw, p, - KS8842_PORT_CTRL_2_OFFSET, PORT_MIRROR_SNIFFER, set); -} - -static inline void port_cfg_mirror_rx(struct ksz_hw *hw, int p, int set) -{ - port_cfg(hw, p, - KS8842_PORT_CTRL_2_OFFSET, PORT_MIRROR_RX, set); -} - -static inline void port_cfg_mirror_tx(struct ksz_hw *hw, int p, int set) -{ - port_cfg(hw, p, - KS8842_PORT_CTRL_2_OFFSET, PORT_MIRROR_TX, set); -} - -static inline void sw_cfg_mirror_rx_tx(struct ksz_hw *hw, int set) -{ - sw_cfg(hw, KS8842_SWITCH_CTRL_2_OFFSET, SWITCH_MIRROR_RX_TX, set); -} - -static void sw_init_mirror(struct ksz_hw *hw) -{ - int port; - - for (port = 0; port < TOTAL_PORT_NUM; port++) { - port_cfg_mirror_sniffer(hw, port, 0); - port_cfg_mirror_rx(hw, port, 0); - port_cfg_mirror_tx(hw, port, 0); - } - sw_cfg_mirror_rx_tx(hw, 0); -} - -static inline void sw_cfg_unk_def_deliver(struct ksz_hw *hw, int set) -{ - sw_cfg(hw, KS8842_SWITCH_CTRL_7_OFFSET, - SWITCH_UNK_DEF_PORT_ENABLE, set); -} - -static inline int sw_cfg_chk_unk_def_deliver(struct ksz_hw *hw) -{ - return sw_chk(hw, KS8842_SWITCH_CTRL_7_OFFSET, - SWITCH_UNK_DEF_PORT_ENABLE); -} - -static inline void sw_cfg_unk_def_port(struct ksz_hw *hw, int port, int set) -{ - port_cfg_shift(hw, port, KS8842_SWITCH_CTRL_7_OFFSET, 0, set); -} - -static inline int sw_chk_unk_def_port(struct ksz_hw *hw, int port) -{ - return port_chk_shift(hw, port, KS8842_SWITCH_CTRL_7_OFFSET, 0); -} - -/* Priority */ - -static inline void port_cfg_diffserv(struct ksz_hw *hw, int p, int set) -{ - port_cfg(hw, p, - KS8842_PORT_CTRL_1_OFFSET, PORT_DIFFSERV_ENABLE, set); -} - -static inline void port_cfg_802_1p(struct ksz_hw *hw, int p, int set) -{ - port_cfg(hw, p, - KS8842_PORT_CTRL_1_OFFSET, PORT_802_1P_ENABLE, set); -} - -static inline void port_cfg_replace_vid(struct ksz_hw *hw, int p, int set) -{ - port_cfg(hw, p, - KS8842_PORT_CTRL_2_OFFSET, PORT_USER_PRIORITY_CEILING, set); -} - -static inline void port_cfg_prio(struct ksz_hw *hw, int p, int set) -{ - port_cfg(hw, p, - KS8842_PORT_CTRL_1_OFFSET, PORT_PRIO_QUEUE_ENABLE, set); -} - -static inline int port_chk_diffserv(struct ksz_hw *hw, int p) -{ - return port_chk(hw, p, - KS8842_PORT_CTRL_1_OFFSET, PORT_DIFFSERV_ENABLE); -} - -static inline int port_chk_802_1p(struct ksz_hw *hw, int p) -{ - return port_chk(hw, p, - KS8842_PORT_CTRL_1_OFFSET, PORT_802_1P_ENABLE); -} - -static inline int port_chk_replace_vid(struct ksz_hw *hw, int p) -{ - return port_chk(hw, p, - KS8842_PORT_CTRL_2_OFFSET, PORT_USER_PRIORITY_CEILING); -} - -static inline int port_chk_prio(struct ksz_hw *hw, int p) -{ - return port_chk(hw, p, - KS8842_PORT_CTRL_1_OFFSET, PORT_PRIO_QUEUE_ENABLE); -} - -/** - * sw_dis_diffserv - disable switch DiffServ priority - * @hw: The hardware instance. - * @port: The port index. - * - * This routine disables the DiffServ priority function of the switch. - */ -static void sw_dis_diffserv(struct ksz_hw *hw, int port) -{ - port_cfg_diffserv(hw, port, 0); -} - -/** - * sw_dis_802_1p - disable switch 802.1p priority - * @hw: The hardware instance. - * @port: The port index. - * - * This routine disables the 802.1p priority function of the switch. - */ -static void sw_dis_802_1p(struct ksz_hw *hw, int port) -{ - port_cfg_802_1p(hw, port, 0); -} - -/** - * sw_cfg_replace_null_vid - - * @hw: The hardware instance. - * @set: The flag to disable or enable. - * - */ -static void sw_cfg_replace_null_vid(struct ksz_hw *hw, int set) -{ - sw_cfg(hw, KS8842_SWITCH_CTRL_3_OFFSET, SWITCH_REPLACE_NULL_VID, set); -} - -/** - * sw_cfg_replace_vid - enable switch 802.10 priority re-mapping - * @hw: The hardware instance. - * @port: The port index. - * @set: The flag to disable or enable. - * - * This routine enables the 802.1p priority re-mapping function of the switch. - * That allows 802.1p priority field to be replaced with the port's default - * tag's priority value if the ingress packet's 802.1p priority has a higher - * priority than port's default tag's priority. - */ -static void sw_cfg_replace_vid(struct ksz_hw *hw, int port, int set) -{ - port_cfg_replace_vid(hw, port, set); -} - -/** - * sw_cfg_port_based - configure switch port based priority - * @hw: The hardware instance. - * @port: The port index. - * @prio: The priority to set. - * - * This routine configures the port based priority of the switch. - */ -static void sw_cfg_port_based(struct ksz_hw *hw, int port, u8 prio) -{ - u16 data; - - if (prio > PORT_BASED_PRIORITY_BASE) - prio = PORT_BASED_PRIORITY_BASE; - - hw->ksz_switch->port_cfg[port].port_prio = prio; - - port_r16(hw, port, KS8842_PORT_CTRL_1_OFFSET, &data); - data &= ~PORT_BASED_PRIORITY_MASK; - data |= prio << PORT_BASED_PRIORITY_SHIFT; - port_w16(hw, port, KS8842_PORT_CTRL_1_OFFSET, data); -} - -/** - * sw_dis_multi_queue - disable transmit multiple queues - * @hw: The hardware instance. - * @port: The port index. - * - * This routine disables the transmit multiple queues selection of the switch - * port. Only single transmit queue on the port. - */ -static void sw_dis_multi_queue(struct ksz_hw *hw, int port) -{ - port_cfg_prio(hw, port, 0); -} - -/** - * sw_init_prio - initialize switch priority - * @hw: The hardware instance. - * - * This routine initializes the switch QoS priority functions. - */ -static void sw_init_prio(struct ksz_hw *hw) -{ - int port; - int tos; - struct ksz_switch *sw = hw->ksz_switch; - - /* - * Init all the 802.1p tag priority value to be assigned to different - * priority queue. - */ - sw->p_802_1p[0] = 0; - sw->p_802_1p[1] = 0; - sw->p_802_1p[2] = 1; - sw->p_802_1p[3] = 1; - sw->p_802_1p[4] = 2; - sw->p_802_1p[5] = 2; - sw->p_802_1p[6] = 3; - sw->p_802_1p[7] = 3; - - /* - * Init all the DiffServ priority value to be assigned to priority - * queue 0. - */ - for (tos = 0; tos < DIFFSERV_ENTRIES; tos++) - sw->diffserv[tos] = 0; - - /* All QoS functions disabled. */ - for (port = 0; port < TOTAL_PORT_NUM; port++) { - sw_dis_multi_queue(hw, port); - sw_dis_diffserv(hw, port); - sw_dis_802_1p(hw, port); - sw_cfg_replace_vid(hw, port, 0); - - sw->port_cfg[port].port_prio = 0; - sw_cfg_port_based(hw, port, sw->port_cfg[port].port_prio); - } - sw_cfg_replace_null_vid(hw, 0); -} - -/** - * port_get_def_vid - get port default VID. - * @hw: The hardware instance. - * @port: The port index. - * @vid: Buffer to store the VID. - * - * This routine retrieves the default VID of the port. - */ -static void port_get_def_vid(struct ksz_hw *hw, int port, u16 *vid) -{ - u32 addr; - - PORT_CTRL_ADDR(port, addr); - addr += KS8842_PORT_CTRL_VID_OFFSET; - *vid = readw(hw->io + addr); -} - -/** - * sw_init_vlan - initialize switch VLAN - * @hw: The hardware instance. - * - * This routine initializes the VLAN function of the switch. - */ -static void sw_init_vlan(struct ksz_hw *hw) -{ - int port; - int entry; - struct ksz_switch *sw = hw->ksz_switch; - - /* Read 16 VLAN entries from device's VLAN table. */ - for (entry = 0; entry < VLAN_TABLE_ENTRIES; entry++) { - sw_r_vlan_table(hw, entry, - &sw->vlan_table[entry].vid, - &sw->vlan_table[entry].fid, - &sw->vlan_table[entry].member); - } - - for (port = 0; port < TOTAL_PORT_NUM; port++) { - port_get_def_vid(hw, port, &sw->port_cfg[port].vid); - sw->port_cfg[port].member = PORT_MASK; - } -} - -/** - * sw_cfg_port_base_vlan - configure port-based VLAN membership - * @hw: The hardware instance. - * @port: The port index. - * @member: The port-based VLAN membership. - * - * This routine configures the port-based VLAN membership of the port. - */ -static void sw_cfg_port_base_vlan(struct ksz_hw *hw, int port, u8 member) -{ - u32 addr; - u8 data; - - PORT_CTRL_ADDR(port, addr); - addr += KS8842_PORT_CTRL_2_OFFSET; - - data = readb(hw->io + addr); - data &= ~PORT_VLAN_MEMBERSHIP; - data |= (member & PORT_MASK); - writeb(data, hw->io + addr); - - hw->ksz_switch->port_cfg[port].member = member; -} - -/** - * sw_get_addr - get the switch MAC address. - * @hw: The hardware instance. - * @mac_addr: Buffer to store the MAC address. - * - * This function retrieves the MAC address of the switch. - */ -static inline void sw_get_addr(struct ksz_hw *hw, u8 *mac_addr) -{ - int i; - - for (i = 0; i < 6; i += 2) { - mac_addr[i] = readb(hw->io + KS8842_MAC_ADDR_0_OFFSET + i); - mac_addr[1 + i] = readb(hw->io + KS8842_MAC_ADDR_1_OFFSET + i); - } -} - -/** - * sw_set_addr - configure switch MAC address - * @hw: The hardware instance. - * @mac_addr: The MAC address. - * - * This function configures the MAC address of the switch. - */ -static void sw_set_addr(struct ksz_hw *hw, u8 *mac_addr) -{ - int i; - - for (i = 0; i < 6; i += 2) { - writeb(mac_addr[i], hw->io + KS8842_MAC_ADDR_0_OFFSET + i); - writeb(mac_addr[1 + i], hw->io + KS8842_MAC_ADDR_1_OFFSET + i); - } -} - -/** - * sw_set_global_ctrl - set switch global control - * @hw: The hardware instance. - * - * This routine sets the global control of the switch function. - */ -static void sw_set_global_ctrl(struct ksz_hw *hw) -{ - u16 data; - - /* Enable switch MII flow control. */ - data = readw(hw->io + KS8842_SWITCH_CTRL_3_OFFSET); - data |= SWITCH_FLOW_CTRL; - writew(data, hw->io + KS8842_SWITCH_CTRL_3_OFFSET); - - data = readw(hw->io + KS8842_SWITCH_CTRL_1_OFFSET); - - /* Enable aggressive back off algorithm in half duplex mode. */ - data |= SWITCH_AGGR_BACKOFF; - - /* Enable automatic fast aging when link changed detected. */ - data |= SWITCH_AGING_ENABLE; - data |= SWITCH_LINK_AUTO_AGING; - - if (hw->overrides & FAST_AGING) - data |= SWITCH_FAST_AGING; - else - data &= ~SWITCH_FAST_AGING; - writew(data, hw->io + KS8842_SWITCH_CTRL_1_OFFSET); - - data = readw(hw->io + KS8842_SWITCH_CTRL_2_OFFSET); - - /* Enable no excessive collision drop. */ - data |= NO_EXC_COLLISION_DROP; - writew(data, hw->io + KS8842_SWITCH_CTRL_2_OFFSET); -} - -enum { - STP_STATE_DISABLED = 0, - STP_STATE_LISTENING, - STP_STATE_LEARNING, - STP_STATE_FORWARDING, - STP_STATE_BLOCKED, - STP_STATE_SIMPLE -}; - -/** - * port_set_stp_state - configure port spanning tree state - * @hw: The hardware instance. - * @port: The port index. - * @state: The spanning tree state. - * - * This routine configures the spanning tree state of the port. - */ -static void port_set_stp_state(struct ksz_hw *hw, int port, int state) -{ - u16 data; - - port_r16(hw, port, KS8842_PORT_CTRL_2_OFFSET, &data); - switch (state) { - case STP_STATE_DISABLED: - data &= ~(PORT_TX_ENABLE | PORT_RX_ENABLE); - data |= PORT_LEARN_DISABLE; - break; - case STP_STATE_LISTENING: -/* - * No need to turn on transmit because of port direct mode. - * Turning on receive is required if static MAC table is not setup. - */ - data &= ~PORT_TX_ENABLE; - data |= PORT_RX_ENABLE; - data |= PORT_LEARN_DISABLE; - break; - case STP_STATE_LEARNING: - data &= ~PORT_TX_ENABLE; - data |= PORT_RX_ENABLE; - data &= ~PORT_LEARN_DISABLE; - break; - case STP_STATE_FORWARDING: - data |= (PORT_TX_ENABLE | PORT_RX_ENABLE); - data &= ~PORT_LEARN_DISABLE; - break; - case STP_STATE_BLOCKED: -/* - * Need to setup static MAC table with override to keep receiving BPDU - * messages. See sw_init_stp routine. - */ - data &= ~(PORT_TX_ENABLE | PORT_RX_ENABLE); - data |= PORT_LEARN_DISABLE; - break; - case STP_STATE_SIMPLE: - data |= (PORT_TX_ENABLE | PORT_RX_ENABLE); - data |= PORT_LEARN_DISABLE; - break; - } - port_w16(hw, port, KS8842_PORT_CTRL_2_OFFSET, data); - hw->ksz_switch->port_cfg[port].stp_state = state; -} - -#define STP_ENTRY 0 -#define BROADCAST_ENTRY 1 -#define BRIDGE_ADDR_ENTRY 2 -#define IPV6_ADDR_ENTRY 3 - -/** - * sw_clr_sta_mac_table - clear static MAC table - * @hw: The hardware instance. - * - * This routine clears the static MAC table. - */ -static void sw_clr_sta_mac_table(struct ksz_hw *hw) -{ - struct ksz_mac_table *entry; - int i; - - for (i = 0; i < STATIC_MAC_TABLE_ENTRIES; i++) { - entry = &hw->ksz_switch->mac_table[i]; - sw_w_sta_mac_table(hw, i, - entry->mac_addr, entry->ports, - entry->override, 0, - entry->use_fid, entry->fid); - } -} - -/** - * sw_init_stp - initialize switch spanning tree support - * @hw: The hardware instance. - * - * This routine initializes the spanning tree support of the switch. - */ -static void sw_init_stp(struct ksz_hw *hw) -{ - struct ksz_mac_table *entry; - - entry = &hw->ksz_switch->mac_table[STP_ENTRY]; - entry->mac_addr[0] = 0x01; - entry->mac_addr[1] = 0x80; - entry->mac_addr[2] = 0xC2; - entry->mac_addr[3] = 0x00; - entry->mac_addr[4] = 0x00; - entry->mac_addr[5] = 0x00; - entry->ports = HOST_MASK; - entry->override = 1; - entry->valid = 1; - sw_w_sta_mac_table(hw, STP_ENTRY, - entry->mac_addr, entry->ports, - entry->override, entry->valid, - entry->use_fid, entry->fid); -} - -/** - * sw_block_addr - block certain packets from the host port - * @hw: The hardware instance. - * - * This routine blocks certain packets from reaching to the host port. - */ -static void sw_block_addr(struct ksz_hw *hw) -{ - struct ksz_mac_table *entry; - int i; - - for (i = BROADCAST_ENTRY; i <= IPV6_ADDR_ENTRY; i++) { - entry = &hw->ksz_switch->mac_table[i]; - entry->valid = 0; - sw_w_sta_mac_table(hw, i, - entry->mac_addr, entry->ports, - entry->override, entry->valid, - entry->use_fid, entry->fid); - } -} - -#define PHY_LINK_SUPPORT \ - (PHY_AUTO_NEG_ASYM_PAUSE | \ - PHY_AUTO_NEG_SYM_PAUSE | \ - PHY_AUTO_NEG_100BT4 | \ - PHY_AUTO_NEG_100BTX_FD | \ - PHY_AUTO_NEG_100BTX | \ - PHY_AUTO_NEG_10BT_FD | \ - PHY_AUTO_NEG_10BT) - -static inline void hw_r_phy_ctrl(struct ksz_hw *hw, int phy, u16 *data) -{ - *data = readw(hw->io + phy + KS884X_PHY_CTRL_OFFSET); -} - -static inline void hw_w_phy_ctrl(struct ksz_hw *hw, int phy, u16 data) -{ - writew(data, hw->io + phy + KS884X_PHY_CTRL_OFFSET); -} - -static inline void hw_r_phy_link_stat(struct ksz_hw *hw, int phy, u16 *data) -{ - *data = readw(hw->io + phy + KS884X_PHY_STATUS_OFFSET); -} - -static inline void hw_r_phy_auto_neg(struct ksz_hw *hw, int phy, u16 *data) -{ - *data = readw(hw->io + phy + KS884X_PHY_AUTO_NEG_OFFSET); -} - -static inline void hw_w_phy_auto_neg(struct ksz_hw *hw, int phy, u16 data) -{ - writew(data, hw->io + phy + KS884X_PHY_AUTO_NEG_OFFSET); -} - -static inline void hw_r_phy_rem_cap(struct ksz_hw *hw, int phy, u16 *data) -{ - *data = readw(hw->io + phy + KS884X_PHY_REMOTE_CAP_OFFSET); -} - -static inline void hw_r_phy_crossover(struct ksz_hw *hw, int phy, u16 *data) -{ - *data = readw(hw->io + phy + KS884X_PHY_CTRL_OFFSET); -} - -static inline void hw_w_phy_crossover(struct ksz_hw *hw, int phy, u16 data) -{ - writew(data, hw->io + phy + KS884X_PHY_CTRL_OFFSET); -} - -static inline void hw_r_phy_polarity(struct ksz_hw *hw, int phy, u16 *data) -{ - *data = readw(hw->io + phy + KS884X_PHY_PHY_CTRL_OFFSET); -} - -static inline void hw_w_phy_polarity(struct ksz_hw *hw, int phy, u16 data) -{ - writew(data, hw->io + phy + KS884X_PHY_PHY_CTRL_OFFSET); -} - -static inline void hw_r_phy_link_md(struct ksz_hw *hw, int phy, u16 *data) -{ - *data = readw(hw->io + phy + KS884X_PHY_LINK_MD_OFFSET); -} - -static inline void hw_w_phy_link_md(struct ksz_hw *hw, int phy, u16 data) -{ - writew(data, hw->io + phy + KS884X_PHY_LINK_MD_OFFSET); -} - -/** - * hw_r_phy - read data from PHY register - * @hw: The hardware instance. - * @port: Port to read. - * @reg: PHY register to read. - * @val: Buffer to store the read data. - * - * This routine reads data from the PHY register. - */ -static void hw_r_phy(struct ksz_hw *hw, int port, u16 reg, u16 *val) -{ - int phy; - - phy = KS884X_PHY_1_CTRL_OFFSET + port * PHY_CTRL_INTERVAL + reg; - *val = readw(hw->io + phy); -} - -/** - * port_w_phy - write data to PHY register - * @hw: The hardware instance. - * @port: Port to write. - * @reg: PHY register to write. - * @val: Word data to write. - * - * This routine writes data to the PHY register. - */ -static void hw_w_phy(struct ksz_hw *hw, int port, u16 reg, u16 val) -{ - int phy; - - phy = KS884X_PHY_1_CTRL_OFFSET + port * PHY_CTRL_INTERVAL + reg; - writew(val, hw->io + phy); -} - -/* - * EEPROM access functions - */ - -#define AT93C_CODE 0 -#define AT93C_WR_OFF 0x00 -#define AT93C_WR_ALL 0x10 -#define AT93C_ER_ALL 0x20 -#define AT93C_WR_ON 0x30 - -#define AT93C_WRITE 1 -#define AT93C_READ 2 -#define AT93C_ERASE 3 - -#define EEPROM_DELAY 4 - -static inline void drop_gpio(struct ksz_hw *hw, u8 gpio) -{ - u16 data; - - data = readw(hw->io + KS884X_EEPROM_CTRL_OFFSET); - data &= ~gpio; - writew(data, hw->io + KS884X_EEPROM_CTRL_OFFSET); -} - -static inline void raise_gpio(struct ksz_hw *hw, u8 gpio) -{ - u16 data; - - data = readw(hw->io + KS884X_EEPROM_CTRL_OFFSET); - data |= gpio; - writew(data, hw->io + KS884X_EEPROM_CTRL_OFFSET); -} - -static inline u8 state_gpio(struct ksz_hw *hw, u8 gpio) -{ - u16 data; - - data = readw(hw->io + KS884X_EEPROM_CTRL_OFFSET); - return (u8)(data & gpio); -} - -static void eeprom_clk(struct ksz_hw *hw) -{ - raise_gpio(hw, EEPROM_SERIAL_CLOCK); - udelay(EEPROM_DELAY); - drop_gpio(hw, EEPROM_SERIAL_CLOCK); - udelay(EEPROM_DELAY); -} - -static u16 spi_r(struct ksz_hw *hw) -{ - int i; - u16 temp = 0; - - for (i = 15; i >= 0; i--) { - raise_gpio(hw, EEPROM_SERIAL_CLOCK); - udelay(EEPROM_DELAY); - - temp |= (state_gpio(hw, EEPROM_DATA_IN)) ? 1 << i : 0; - - drop_gpio(hw, EEPROM_SERIAL_CLOCK); - udelay(EEPROM_DELAY); - } - return temp; -} - -static void spi_w(struct ksz_hw *hw, u16 data) -{ - int i; - - for (i = 15; i >= 0; i--) { - (data & (0x01 << i)) ? raise_gpio(hw, EEPROM_DATA_OUT) : - drop_gpio(hw, EEPROM_DATA_OUT); - eeprom_clk(hw); - } -} - -static void spi_reg(struct ksz_hw *hw, u8 data, u8 reg) -{ - int i; - - /* Initial start bit */ - raise_gpio(hw, EEPROM_DATA_OUT); - eeprom_clk(hw); - - /* AT93C operation */ - for (i = 1; i >= 0; i--) { - (data & (0x01 << i)) ? raise_gpio(hw, EEPROM_DATA_OUT) : - drop_gpio(hw, EEPROM_DATA_OUT); - eeprom_clk(hw); - } - - /* Address location */ - for (i = 5; i >= 0; i--) { - (reg & (0x01 << i)) ? raise_gpio(hw, EEPROM_DATA_OUT) : - drop_gpio(hw, EEPROM_DATA_OUT); - eeprom_clk(hw); - } -} - -#define EEPROM_DATA_RESERVED 0 -#define EEPROM_DATA_MAC_ADDR_0 1 -#define EEPROM_DATA_MAC_ADDR_1 2 -#define EEPROM_DATA_MAC_ADDR_2 3 -#define EEPROM_DATA_SUBSYS_ID 4 -#define EEPROM_DATA_SUBSYS_VEN_ID 5 -#define EEPROM_DATA_PM_CAP 6 - -/* User defined EEPROM data */ -#define EEPROM_DATA_OTHER_MAC_ADDR 9 - -/** - * eeprom_read - read from AT93C46 EEPROM - * @hw: The hardware instance. - * @reg: The register offset. - * - * This function reads a word from the AT93C46 EEPROM. - * - * Return the data value. - */ -static u16 eeprom_read(struct ksz_hw *hw, u8 reg) -{ - u16 data; - - raise_gpio(hw, EEPROM_ACCESS_ENABLE | EEPROM_CHIP_SELECT); - - spi_reg(hw, AT93C_READ, reg); - data = spi_r(hw); - - drop_gpio(hw, EEPROM_ACCESS_ENABLE | EEPROM_CHIP_SELECT); - - return data; -} - -/** - * eeprom_write - write to AT93C46 EEPROM - * @hw: The hardware instance. - * @reg: The register offset. - * @data: The data value. - * - * This procedure writes a word to the AT93C46 EEPROM. - */ -static void eeprom_write(struct ksz_hw *hw, u8 reg, u16 data) -{ - int timeout; - - raise_gpio(hw, EEPROM_ACCESS_ENABLE | EEPROM_CHIP_SELECT); - - /* Enable write. */ - spi_reg(hw, AT93C_CODE, AT93C_WR_ON); - drop_gpio(hw, EEPROM_CHIP_SELECT); - udelay(1); - - /* Erase the register. */ - raise_gpio(hw, EEPROM_CHIP_SELECT); - spi_reg(hw, AT93C_ERASE, reg); - drop_gpio(hw, EEPROM_CHIP_SELECT); - udelay(1); - - /* Check operation complete. */ - raise_gpio(hw, EEPROM_CHIP_SELECT); - timeout = 8; - mdelay(2); - do { - mdelay(1); - } while (!state_gpio(hw, EEPROM_DATA_IN) && --timeout); - drop_gpio(hw, EEPROM_CHIP_SELECT); - udelay(1); - - /* Write the register. */ - raise_gpio(hw, EEPROM_CHIP_SELECT); - spi_reg(hw, AT93C_WRITE, reg); - spi_w(hw, data); - drop_gpio(hw, EEPROM_CHIP_SELECT); - udelay(1); - - /* Check operation complete. */ - raise_gpio(hw, EEPROM_CHIP_SELECT); - timeout = 8; - mdelay(2); - do { - mdelay(1); - } while (!state_gpio(hw, EEPROM_DATA_IN) && --timeout); - drop_gpio(hw, EEPROM_CHIP_SELECT); - udelay(1); - - /* Disable write. */ - raise_gpio(hw, EEPROM_CHIP_SELECT); - spi_reg(hw, AT93C_CODE, AT93C_WR_OFF); - - drop_gpio(hw, EEPROM_ACCESS_ENABLE | EEPROM_CHIP_SELECT); -} - -/* - * Link detection routines - */ - -static u16 advertised_flow_ctrl(struct ksz_port *port, u16 ctrl) -{ - ctrl &= ~PORT_AUTO_NEG_SYM_PAUSE; - switch (port->flow_ctrl) { - case PHY_FLOW_CTRL: - ctrl |= PORT_AUTO_NEG_SYM_PAUSE; - break; - /* Not supported. */ - case PHY_TX_ONLY: - case PHY_RX_ONLY: - default: - break; - } - return ctrl; -} - -static void set_flow_ctrl(struct ksz_hw *hw, int rx, int tx) -{ - u32 rx_cfg; - u32 tx_cfg; - - rx_cfg = hw->rx_cfg; - tx_cfg = hw->tx_cfg; - if (rx) - hw->rx_cfg |= DMA_RX_FLOW_ENABLE; - else - hw->rx_cfg &= ~DMA_RX_FLOW_ENABLE; - if (tx) - hw->tx_cfg |= DMA_TX_FLOW_ENABLE; - else - hw->tx_cfg &= ~DMA_TX_FLOW_ENABLE; - if (hw->enabled) { - if (rx_cfg != hw->rx_cfg) - writel(hw->rx_cfg, hw->io + KS_DMA_RX_CTRL); - if (tx_cfg != hw->tx_cfg) - writel(hw->tx_cfg, hw->io + KS_DMA_TX_CTRL); - } -} - -static void determine_flow_ctrl(struct ksz_hw *hw, struct ksz_port *port, - u16 local, u16 remote) -{ - int rx; - int tx; - - if (hw->overrides & PAUSE_FLOW_CTRL) - return; - - rx = tx = 0; - if (port->force_link) - rx = tx = 1; - if (remote & PHY_AUTO_NEG_SYM_PAUSE) { - if (local & PHY_AUTO_NEG_SYM_PAUSE) { - rx = tx = 1; - } else if ((remote & PHY_AUTO_NEG_ASYM_PAUSE) && - (local & PHY_AUTO_NEG_PAUSE) == - PHY_AUTO_NEG_ASYM_PAUSE) { - tx = 1; - } - } else if (remote & PHY_AUTO_NEG_ASYM_PAUSE) { - if ((local & PHY_AUTO_NEG_PAUSE) == PHY_AUTO_NEG_PAUSE) - rx = 1; - } - if (!hw->ksz_switch) - set_flow_ctrl(hw, rx, tx); -} - -static inline void port_cfg_change(struct ksz_hw *hw, struct ksz_port *port, - struct ksz_port_info *info, u16 link_status) -{ - if ((hw->features & HALF_DUPLEX_SIGNAL_BUG) && - !(hw->overrides & PAUSE_FLOW_CTRL)) { - u32 cfg = hw->tx_cfg; - - /* Disable flow control in the half duplex mode. */ - if (1 == info->duplex) - hw->tx_cfg &= ~DMA_TX_FLOW_ENABLE; - if (hw->enabled && cfg != hw->tx_cfg) - writel(hw->tx_cfg, hw->io + KS_DMA_TX_CTRL); - } -} - -/** - * port_get_link_speed - get current link status - * @port: The port instance. - * - * This routine reads PHY registers to determine the current link status of the - * switch ports. - */ -static void port_get_link_speed(struct ksz_port *port) -{ - uint interrupt; - struct ksz_port_info *info; - struct ksz_port_info *linked = NULL; - struct ksz_hw *hw = port->hw; - u16 data; - u16 status; - u8 local; - u8 remote; - int i; - int p; - int change = 0; - - interrupt = hw_block_intr(hw); - - for (i = 0, p = port->first_port; i < port->port_cnt; i++, p++) { - info = &hw->port_info[p]; - port_r16(hw, p, KS884X_PORT_CTRL_4_OFFSET, &data); - port_r16(hw, p, KS884X_PORT_STATUS_OFFSET, &status); - - /* - * Link status is changing all the time even when there is no - * cable connection! - */ - remote = status & (PORT_AUTO_NEG_COMPLETE | - PORT_STATUS_LINK_GOOD); - local = (u8) data; - - /* No change to status. */ - if (local == info->advertised && remote == info->partner) - continue; - - info->advertised = local; - info->partner = remote; - if (status & PORT_STATUS_LINK_GOOD) { - - /* Remember the first linked port. */ - if (!linked) - linked = info; - - info->tx_rate = 10 * TX_RATE_UNIT; - if (status & PORT_STATUS_SPEED_100MBIT) - info->tx_rate = 100 * TX_RATE_UNIT; - - info->duplex = 1; - if (status & PORT_STATUS_FULL_DUPLEX) - info->duplex = 2; - - if (media_connected != info->state) { - hw_r_phy(hw, p, KS884X_PHY_AUTO_NEG_OFFSET, - &data); - hw_r_phy(hw, p, KS884X_PHY_REMOTE_CAP_OFFSET, - &status); - determine_flow_ctrl(hw, port, data, status); - if (hw->ksz_switch) { - port_cfg_back_pressure(hw, p, - (1 == info->duplex)); - } - change |= 1 << i; - port_cfg_change(hw, port, info, status); - } - info->state = media_connected; - } else { - if (media_disconnected != info->state) { - change |= 1 << i; - - /* Indicate the link just goes down. */ - hw->port_mib[p].link_down = 1; - } - info->state = media_disconnected; - } - hw->port_mib[p].state = (u8) info->state; - } - - if (linked && media_disconnected == port->linked->state) - port->linked = linked; - - hw_restore_intr(hw, interrupt); -} - -#define PHY_RESET_TIMEOUT 10 - -/** - * port_set_link_speed - set port speed - * @port: The port instance. - * - * This routine sets the link speed of the switch ports. - */ -static void port_set_link_speed(struct ksz_port *port) -{ - struct ksz_port_info *info; - struct ksz_hw *hw = port->hw; - u16 data; - u16 cfg; - u8 status; - int i; - int p; - - for (i = 0, p = port->first_port; i < port->port_cnt; i++, p++) { - info = &hw->port_info[p]; - - port_r16(hw, p, KS884X_PORT_CTRL_4_OFFSET, &data); - port_r8(hw, p, KS884X_PORT_STATUS_OFFSET, &status); - - cfg = 0; - if (status & PORT_STATUS_LINK_GOOD) - cfg = data; - - data |= PORT_AUTO_NEG_ENABLE; - data = advertised_flow_ctrl(port, data); - - data |= PORT_AUTO_NEG_100BTX_FD | PORT_AUTO_NEG_100BTX | - PORT_AUTO_NEG_10BT_FD | PORT_AUTO_NEG_10BT; - - /* Check if manual configuration is specified by the user. */ - if (port->speed || port->duplex) { - if (10 == port->speed) - data &= ~(PORT_AUTO_NEG_100BTX_FD | - PORT_AUTO_NEG_100BTX); - else if (100 == port->speed) - data &= ~(PORT_AUTO_NEG_10BT_FD | - PORT_AUTO_NEG_10BT); - if (1 == port->duplex) - data &= ~(PORT_AUTO_NEG_100BTX_FD | - PORT_AUTO_NEG_10BT_FD); - else if (2 == port->duplex) - data &= ~(PORT_AUTO_NEG_100BTX | - PORT_AUTO_NEG_10BT); - } - if (data != cfg) { - data |= PORT_AUTO_NEG_RESTART; - port_w16(hw, p, KS884X_PORT_CTRL_4_OFFSET, data); - } - } -} - -/** - * port_force_link_speed - force port speed - * @port: The port instance. - * - * This routine forces the link speed of the switch ports. - */ -static void port_force_link_speed(struct ksz_port *port) -{ - struct ksz_hw *hw = port->hw; - u16 data; - int i; - int phy; - int p; - - for (i = 0, p = port->first_port; i < port->port_cnt; i++, p++) { - phy = KS884X_PHY_1_CTRL_OFFSET + p * PHY_CTRL_INTERVAL; - hw_r_phy_ctrl(hw, phy, &data); - - data &= ~PHY_AUTO_NEG_ENABLE; - - if (10 == port->speed) - data &= ~PHY_SPEED_100MBIT; - else if (100 == port->speed) - data |= PHY_SPEED_100MBIT; - if (1 == port->duplex) - data &= ~PHY_FULL_DUPLEX; - else if (2 == port->duplex) - data |= PHY_FULL_DUPLEX; - hw_w_phy_ctrl(hw, phy, data); - } -} - -static void port_set_power_saving(struct ksz_port *port, int enable) -{ - struct ksz_hw *hw = port->hw; - int i; - int p; - - for (i = 0, p = port->first_port; i < port->port_cnt; i++, p++) - port_cfg(hw, p, - KS884X_PORT_CTRL_4_OFFSET, PORT_POWER_DOWN, enable); -} - -/* - * KSZ8841 power management functions - */ - -/** - * hw_chk_wol_pme_status - check PMEN pin - * @hw: The hardware instance. - * - * This function is used to check PMEN pin is asserted. - * - * Return 1 if PMEN pin is asserted; otherwise, 0. - */ -static int hw_chk_wol_pme_status(struct ksz_hw *hw) -{ - struct dev_info *hw_priv = container_of(hw, struct dev_info, hw); - struct pci_dev *pdev = hw_priv->pdev; - u16 data; - - if (!pdev->pm_cap) - return 0; - pci_read_config_word(pdev, pdev->pm_cap + PCI_PM_CTRL, &data); - return (data & PCI_PM_CTRL_PME_STATUS) == PCI_PM_CTRL_PME_STATUS; -} - -/** - * hw_clr_wol_pme_status - clear PMEN pin - * @hw: The hardware instance. - * - * This routine is used to clear PME_Status to deassert PMEN pin. - */ -static void hw_clr_wol_pme_status(struct ksz_hw *hw) -{ - struct dev_info *hw_priv = container_of(hw, struct dev_info, hw); - struct pci_dev *pdev = hw_priv->pdev; - u16 data; - - if (!pdev->pm_cap) - return; - - /* Clear PME_Status to deassert PMEN pin. */ - pci_read_config_word(pdev, pdev->pm_cap + PCI_PM_CTRL, &data); - data |= PCI_PM_CTRL_PME_STATUS; - pci_write_config_word(pdev, pdev->pm_cap + PCI_PM_CTRL, data); -} - -/** - * hw_cfg_wol_pme - enable or disable Wake-on-LAN - * @hw: The hardware instance. - * @set: The flag indicating whether to enable or disable. - * - * This routine is used to enable or disable Wake-on-LAN. - */ -static void hw_cfg_wol_pme(struct ksz_hw *hw, int set) -{ - struct dev_info *hw_priv = container_of(hw, struct dev_info, hw); - struct pci_dev *pdev = hw_priv->pdev; - u16 data; - - if (!pdev->pm_cap) - return; - pci_read_config_word(pdev, pdev->pm_cap + PCI_PM_CTRL, &data); - data &= ~PCI_PM_CTRL_STATE_MASK; - if (set) - data |= PCI_PM_CTRL_PME_ENABLE | PCI_D3hot; - else - data &= ~PCI_PM_CTRL_PME_ENABLE; - pci_write_config_word(pdev, pdev->pm_cap + PCI_PM_CTRL, data); -} - -/** - * hw_cfg_wol - configure Wake-on-LAN features - * @hw: The hardware instance. - * @frame: The pattern frame bit. - * @set: The flag indicating whether to enable or disable. - * - * This routine is used to enable or disable certain Wake-on-LAN features. - */ -static void hw_cfg_wol(struct ksz_hw *hw, u16 frame, int set) -{ - u16 data; - - data = readw(hw->io + KS8841_WOL_CTRL_OFFSET); - if (set) - data |= frame; - else - data &= ~frame; - writew(data, hw->io + KS8841_WOL_CTRL_OFFSET); -} - -/** - * hw_set_wol_frame - program Wake-on-LAN pattern - * @hw: The hardware instance. - * @i: The frame index. - * @mask_size: The size of the mask. - * @mask: Mask to ignore certain bytes in the pattern. - * @frame_size: The size of the frame. - * @pattern: The frame data. - * - * This routine is used to program Wake-on-LAN pattern. - */ -static void hw_set_wol_frame(struct ksz_hw *hw, int i, uint mask_size, - const u8 *mask, uint frame_size, const u8 *pattern) -{ - int bits; - int from; - int len; - int to; - u32 crc; - u8 data[64]; - u8 val = 0; - - if (frame_size > mask_size * 8) - frame_size = mask_size * 8; - if (frame_size > 64) - frame_size = 64; - - i *= 0x10; - writel(0, hw->io + KS8841_WOL_FRAME_BYTE0_OFFSET + i); - writel(0, hw->io + KS8841_WOL_FRAME_BYTE2_OFFSET + i); - - bits = len = from = to = 0; - do { - if (bits) { - if ((val & 1)) - data[to++] = pattern[from]; - val >>= 1; - ++from; - --bits; - } else { - val = mask[len]; - writeb(val, hw->io + KS8841_WOL_FRAME_BYTE0_OFFSET + i - + len); - ++len; - if (val) - bits = 8; - else - from += 8; - } - } while (from < (int) frame_size); - if (val) { - bits = mask[len - 1]; - val <<= (from % 8); - bits &= ~val; - writeb(bits, hw->io + KS8841_WOL_FRAME_BYTE0_OFFSET + i + len - - 1); - } - crc = ether_crc(to, data); - writel(crc, hw->io + KS8841_WOL_FRAME_CRC_OFFSET + i); -} - -/** - * hw_add_wol_arp - add ARP pattern - * @hw: The hardware instance. - * @ip_addr: The IPv4 address assigned to the device. - * - * This routine is used to add ARP pattern for waking up the host. - */ -static void hw_add_wol_arp(struct ksz_hw *hw, const u8 *ip_addr) -{ - static const u8 mask[6] = { 0x3F, 0xF0, 0x3F, 0x00, 0xC0, 0x03 }; - u8 pattern[42] = { - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x08, 0x06, - 0x00, 0x01, 0x08, 0x00, 0x06, 0x04, 0x00, 0x01, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00 }; - - memcpy(&pattern[38], ip_addr, 4); - hw_set_wol_frame(hw, 3, 6, mask, 42, pattern); -} - -/** - * hw_add_wol_bcast - add broadcast pattern - * @hw: The hardware instance. - * - * This routine is used to add broadcast pattern for waking up the host. - */ -static void hw_add_wol_bcast(struct ksz_hw *hw) -{ - static const u8 mask[] = { 0x3F }; - static const u8 pattern[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; - - hw_set_wol_frame(hw, 2, 1, mask, MAC_ADDR_LEN, pattern); -} - -/** - * hw_add_wol_mcast - add multicast pattern - * @hw: The hardware instance. - * - * This routine is used to add multicast pattern for waking up the host. - * - * It is assumed the multicast packet is the ICMPv6 neighbor solicitation used - * by IPv6 ping command. Note that multicast packets are filtred through the - * multicast hash table, so not all multicast packets can wake up the host. - */ -static void hw_add_wol_mcast(struct ksz_hw *hw) -{ - static const u8 mask[] = { 0x3F }; - u8 pattern[] = { 0x33, 0x33, 0xFF, 0x00, 0x00, 0x00 }; - - memcpy(&pattern[3], &hw->override_addr[3], 3); - hw_set_wol_frame(hw, 1, 1, mask, 6, pattern); -} - -/** - * hw_add_wol_ucast - add unicast pattern - * @hw: The hardware instance. - * - * This routine is used to add unicast pattern to wakeup the host. - * - * It is assumed the unicast packet is directed to the device, as the hardware - * can only receive them in normal case. - */ -static void hw_add_wol_ucast(struct ksz_hw *hw) -{ - static const u8 mask[] = { 0x3F }; - - hw_set_wol_frame(hw, 0, 1, mask, MAC_ADDR_LEN, hw->override_addr); -} - -/** - * hw_enable_wol - enable Wake-on-LAN - * @hw: The hardware instance. - * @wol_enable: The Wake-on-LAN settings. - * @net_addr: The IPv4 address assigned to the device. - * - * This routine is used to enable Wake-on-LAN depending on driver settings. - */ -static void hw_enable_wol(struct ksz_hw *hw, u32 wol_enable, const u8 *net_addr) -{ - hw_cfg_wol(hw, KS8841_WOL_MAGIC_ENABLE, (wol_enable & WAKE_MAGIC)); - hw_cfg_wol(hw, KS8841_WOL_FRAME0_ENABLE, (wol_enable & WAKE_UCAST)); - hw_add_wol_ucast(hw); - hw_cfg_wol(hw, KS8841_WOL_FRAME1_ENABLE, (wol_enable & WAKE_MCAST)); - hw_add_wol_mcast(hw); - hw_cfg_wol(hw, KS8841_WOL_FRAME2_ENABLE, (wol_enable & WAKE_BCAST)); - hw_cfg_wol(hw, KS8841_WOL_FRAME3_ENABLE, (wol_enable & WAKE_ARP)); - hw_add_wol_arp(hw, net_addr); -} - -/** - * hw_init - check driver is correct for the hardware - * @hw: The hardware instance. - * - * This function checks the hardware is correct for this driver and sets the - * hardware up for proper initialization. - * - * Return number of ports or 0 if not right. - */ -static int hw_init(struct ksz_hw *hw) -{ - int rc = 0; - u16 data; - u16 revision; - - /* Set bus speed to 125MHz. */ - writew(BUS_SPEED_125_MHZ, hw->io + KS884X_BUS_CTRL_OFFSET); - - /* Check KSZ884x chip ID. */ - data = readw(hw->io + KS884X_CHIP_ID_OFFSET); - - revision = (data & KS884X_REVISION_MASK) >> KS884X_REVISION_SHIFT; - data &= KS884X_CHIP_ID_MASK_41; - if (REG_CHIP_ID_41 == data) - rc = 1; - else if (REG_CHIP_ID_42 == data) - rc = 2; - else - return 0; - - /* Setup hardware features or bug workarounds. */ - if (revision <= 1) { - hw->features |= SMALL_PACKET_TX_BUG; - if (1 == rc) - hw->features |= HALF_DUPLEX_SIGNAL_BUG; - } - return rc; -} - -/** - * hw_reset - reset the hardware - * @hw: The hardware instance. - * - * This routine resets the hardware. - */ -static void hw_reset(struct ksz_hw *hw) -{ - writew(GLOBAL_SOFTWARE_RESET, hw->io + KS884X_GLOBAL_CTRL_OFFSET); - - /* Wait for device to reset. */ - mdelay(10); - - /* Write 0 to clear device reset. */ - writew(0, hw->io + KS884X_GLOBAL_CTRL_OFFSET); -} - -/** - * hw_setup - setup the hardware - * @hw: The hardware instance. - * - * This routine setup the hardware for proper operation. - */ -static void hw_setup(struct ksz_hw *hw) -{ -#if SET_DEFAULT_LED - u16 data; - - /* Change default LED mode. */ - data = readw(hw->io + KS8842_SWITCH_CTRL_5_OFFSET); - data &= ~LED_MODE; - data |= SET_DEFAULT_LED; - writew(data, hw->io + KS8842_SWITCH_CTRL_5_OFFSET); -#endif - - /* Setup transmit control. */ - hw->tx_cfg = (DMA_TX_PAD_ENABLE | DMA_TX_CRC_ENABLE | - (DMA_BURST_DEFAULT << DMA_BURST_SHIFT) | DMA_TX_ENABLE); - - /* Setup receive control. */ - hw->rx_cfg = (DMA_RX_BROADCAST | DMA_RX_UNICAST | - (DMA_BURST_DEFAULT << DMA_BURST_SHIFT) | DMA_RX_ENABLE); - hw->rx_cfg |= KS884X_DMA_RX_MULTICAST; - - /* Hardware cannot handle UDP packet in IP fragments. */ - hw->rx_cfg |= (DMA_RX_CSUM_TCP | DMA_RX_CSUM_IP); - - if (hw->all_multi) - hw->rx_cfg |= DMA_RX_ALL_MULTICAST; - if (hw->promiscuous) - hw->rx_cfg |= DMA_RX_PROMISCUOUS; -} - -/** - * hw_setup_intr - setup interrupt mask - * @hw: The hardware instance. - * - * This routine setup the interrupt mask for proper operation. - */ -static void hw_setup_intr(struct ksz_hw *hw) -{ - hw->intr_mask = KS884X_INT_MASK | KS884X_INT_RX_OVERRUN; -} - -static void ksz_check_desc_num(struct ksz_desc_info *info) -{ -#define MIN_DESC_SHIFT 2 - - int alloc = info->alloc; - int shift; - - shift = 0; - while (!(alloc & 1)) { - shift++; - alloc >>= 1; - } - if (alloc != 1 || shift < MIN_DESC_SHIFT) { - pr_alert("Hardware descriptor numbers not right!\n"); - while (alloc) { - shift++; - alloc >>= 1; - } - if (shift < MIN_DESC_SHIFT) - shift = MIN_DESC_SHIFT; - alloc = 1 << shift; - info->alloc = alloc; - } - info->mask = info->alloc - 1; -} - -static void hw_init_desc(struct ksz_desc_info *desc_info, int transmit) -{ - int i; - u32 phys = desc_info->ring_phys; - struct ksz_hw_desc *desc = desc_info->ring_virt; - struct ksz_desc *cur = desc_info->ring; - struct ksz_desc *previous = NULL; - - for (i = 0; i < desc_info->alloc; i++) { - cur->phw = desc++; - phys += desc_info->size; - previous = cur++; - previous->phw->next = cpu_to_le32(phys); - } - previous->phw->next = cpu_to_le32(desc_info->ring_phys); - previous->sw.buf.rx.end_of_ring = 1; - previous->phw->buf.data = cpu_to_le32(previous->sw.buf.data); - - desc_info->avail = desc_info->alloc; - desc_info->last = desc_info->next = 0; - - desc_info->cur = desc_info->ring; -} - -/** - * hw_set_desc_base - set descriptor base addresses - * @hw: The hardware instance. - * @tx_addr: The transmit descriptor base. - * @rx_addr: The receive descriptor base. - * - * This routine programs the descriptor base addresses after reset. - */ -static void hw_set_desc_base(struct ksz_hw *hw, u32 tx_addr, u32 rx_addr) -{ - /* Set base address of Tx/Rx descriptors. */ - writel(tx_addr, hw->io + KS_DMA_TX_ADDR); - writel(rx_addr, hw->io + KS_DMA_RX_ADDR); -} - -static void hw_reset_pkts(struct ksz_desc_info *info) -{ - info->cur = info->ring; - info->avail = info->alloc; - info->last = info->next = 0; -} - -static inline void hw_resume_rx(struct ksz_hw *hw) -{ - writel(DMA_START, hw->io + KS_DMA_RX_START); -} - -/** - * hw_start_rx - start receiving - * @hw: The hardware instance. - * - * This routine starts the receive function of the hardware. - */ -static void hw_start_rx(struct ksz_hw *hw) -{ - writel(hw->rx_cfg, hw->io + KS_DMA_RX_CTRL); - - /* Notify when the receive stops. */ - hw->intr_mask |= KS884X_INT_RX_STOPPED; - - writel(DMA_START, hw->io + KS_DMA_RX_START); - hw_ack_intr(hw, KS884X_INT_RX_STOPPED); - hw->rx_stop++; - - /* Variable overflows. */ - if (0 == hw->rx_stop) - hw->rx_stop = 2; -} - -/* - * hw_stop_rx - stop receiving - * @hw: The hardware instance. - * - * This routine stops the receive function of the hardware. - */ -static void hw_stop_rx(struct ksz_hw *hw) -{ - hw->rx_stop = 0; - hw_turn_off_intr(hw, KS884X_INT_RX_STOPPED); - writel((hw->rx_cfg & ~DMA_RX_ENABLE), hw->io + KS_DMA_RX_CTRL); -} - -/** - * hw_start_tx - start transmitting - * @hw: The hardware instance. - * - * This routine starts the transmit function of the hardware. - */ -static void hw_start_tx(struct ksz_hw *hw) -{ - writel(hw->tx_cfg, hw->io + KS_DMA_TX_CTRL); -} - -/** - * hw_stop_tx - stop transmitting - * @hw: The hardware instance. - * - * This routine stops the transmit function of the hardware. - */ -static void hw_stop_tx(struct ksz_hw *hw) -{ - writel((hw->tx_cfg & ~DMA_TX_ENABLE), hw->io + KS_DMA_TX_CTRL); -} - -/** - * hw_disable - disable hardware - * @hw: The hardware instance. - * - * This routine disables the hardware. - */ -static void hw_disable(struct ksz_hw *hw) -{ - hw_stop_rx(hw); - hw_stop_tx(hw); - hw->enabled = 0; -} - -/** - * hw_enable - enable hardware - * @hw: The hardware instance. - * - * This routine enables the hardware. - */ -static void hw_enable(struct ksz_hw *hw) -{ - hw_start_tx(hw); - hw_start_rx(hw); - hw->enabled = 1; -} - -/** - * hw_alloc_pkt - allocate enough descriptors for transmission - * @hw: The hardware instance. - * @length: The length of the packet. - * @physical: Number of descriptors required. - * - * This function allocates descriptors for transmission. - * - * Return 0 if not successful; 1 for buffer copy; or number of descriptors. - */ -static int hw_alloc_pkt(struct ksz_hw *hw, int length, int physical) -{ - /* Always leave one descriptor free. */ - if (hw->tx_desc_info.avail <= 1) - return 0; - - /* Allocate a descriptor for transmission and mark it current. */ - get_tx_pkt(&hw->tx_desc_info, &hw->tx_desc_info.cur); - hw->tx_desc_info.cur->sw.buf.tx.first_seg = 1; - - /* Keep track of number of transmit descriptors used so far. */ - ++hw->tx_int_cnt; - hw->tx_size += length; - - /* Cannot hold on too much data. */ - if (hw->tx_size >= MAX_TX_HELD_SIZE) - hw->tx_int_cnt = hw->tx_int_mask + 1; - - if (physical > hw->tx_desc_info.avail) - return 1; - - return hw->tx_desc_info.avail; -} - -/** - * hw_send_pkt - mark packet for transmission - * @hw: The hardware instance. - * - * This routine marks the packet for transmission in PCI version. - */ -static void hw_send_pkt(struct ksz_hw *hw) -{ - struct ksz_desc *cur = hw->tx_desc_info.cur; - - cur->sw.buf.tx.last_seg = 1; - - /* Interrupt only after specified number of descriptors used. */ - if (hw->tx_int_cnt > hw->tx_int_mask) { - cur->sw.buf.tx.intr = 1; - hw->tx_int_cnt = 0; - hw->tx_size = 0; - } - - /* KSZ8842 supports port directed transmission. */ - cur->sw.buf.tx.dest_port = hw->dst_ports; - - release_desc(cur); - - writel(0, hw->io + KS_DMA_TX_START); -} - -static int empty_addr(u8 *addr) -{ - u32 *addr1 = (u32 *) addr; - u16 *addr2 = (u16 *) &addr[4]; - - return 0 == *addr1 && 0 == *addr2; -} - -/** - * hw_set_addr - set MAC address - * @hw: The hardware instance. - * - * This routine programs the MAC address of the hardware when the address is - * overrided. - */ -static void hw_set_addr(struct ksz_hw *hw) -{ - int i; - - for (i = 0; i < MAC_ADDR_LEN; i++) - writeb(hw->override_addr[MAC_ADDR_ORDER(i)], - hw->io + KS884X_ADDR_0_OFFSET + i); - - sw_set_addr(hw, hw->override_addr); -} - -/** - * hw_read_addr - read MAC address - * @hw: The hardware instance. - * - * This routine retrieves the MAC address of the hardware. - */ -static void hw_read_addr(struct ksz_hw *hw) -{ - int i; - - for (i = 0; i < MAC_ADDR_LEN; i++) - hw->perm_addr[MAC_ADDR_ORDER(i)] = readb(hw->io + - KS884X_ADDR_0_OFFSET + i); - - if (!hw->mac_override) { - memcpy(hw->override_addr, hw->perm_addr, MAC_ADDR_LEN); - if (empty_addr(hw->override_addr)) { - memcpy(hw->perm_addr, DEFAULT_MAC_ADDRESS, - MAC_ADDR_LEN); - memcpy(hw->override_addr, DEFAULT_MAC_ADDRESS, - MAC_ADDR_LEN); - hw->override_addr[5] += hw->id; - hw_set_addr(hw); - } - } -} - -static void hw_ena_add_addr(struct ksz_hw *hw, int index, u8 *mac_addr) -{ - int i; - u32 mac_addr_lo; - u32 mac_addr_hi; - - mac_addr_hi = 0; - for (i = 0; i < 2; i++) { - mac_addr_hi <<= 8; - mac_addr_hi |= mac_addr[i]; - } - mac_addr_hi |= ADD_ADDR_ENABLE; - mac_addr_lo = 0; - for (i = 2; i < 6; i++) { - mac_addr_lo <<= 8; - mac_addr_lo |= mac_addr[i]; - } - index *= ADD_ADDR_INCR; - - writel(mac_addr_lo, hw->io + index + KS_ADD_ADDR_0_LO); - writel(mac_addr_hi, hw->io + index + KS_ADD_ADDR_0_HI); -} - -static void hw_set_add_addr(struct ksz_hw *hw) -{ - int i; - - for (i = 0; i < ADDITIONAL_ENTRIES; i++) { - if (empty_addr(hw->address[i])) - writel(0, hw->io + ADD_ADDR_INCR * i + - KS_ADD_ADDR_0_HI); - else - hw_ena_add_addr(hw, i, hw->address[i]); - } -} - -static int hw_add_addr(struct ksz_hw *hw, u8 *mac_addr) -{ - int i; - int j = ADDITIONAL_ENTRIES; - - if (!memcmp(hw->override_addr, mac_addr, MAC_ADDR_LEN)) - return 0; - for (i = 0; i < hw->addr_list_size; i++) { - if (!memcmp(hw->address[i], mac_addr, MAC_ADDR_LEN)) - return 0; - if (ADDITIONAL_ENTRIES == j && empty_addr(hw->address[i])) - j = i; - } - if (j < ADDITIONAL_ENTRIES) { - memcpy(hw->address[j], mac_addr, MAC_ADDR_LEN); - hw_ena_add_addr(hw, j, hw->address[j]); - return 0; - } - return -1; -} - -static int hw_del_addr(struct ksz_hw *hw, u8 *mac_addr) -{ - int i; - - for (i = 0; i < hw->addr_list_size; i++) { - if (!memcmp(hw->address[i], mac_addr, MAC_ADDR_LEN)) { - memset(hw->address[i], 0, MAC_ADDR_LEN); - writel(0, hw->io + ADD_ADDR_INCR * i + - KS_ADD_ADDR_0_HI); - return 0; - } - } - return -1; -} - -/** - * hw_clr_multicast - clear multicast addresses - * @hw: The hardware instance. - * - * This routine removes all multicast addresses set in the hardware. - */ -static void hw_clr_multicast(struct ksz_hw *hw) -{ - int i; - - for (i = 0; i < HW_MULTICAST_SIZE; i++) { - hw->multi_bits[i] = 0; - - writeb(0, hw->io + KS884X_MULTICAST_0_OFFSET + i); - } -} - -/** - * hw_set_grp_addr - set multicast addresses - * @hw: The hardware instance. - * - * This routine programs multicast addresses for the hardware to accept those - * addresses. - */ -static void hw_set_grp_addr(struct ksz_hw *hw) -{ - int i; - int index; - int position; - int value; - - memset(hw->multi_bits, 0, sizeof(u8) * HW_MULTICAST_SIZE); - - for (i = 0; i < hw->multi_list_size; i++) { - position = (ether_crc(6, hw->multi_list[i]) >> 26) & 0x3f; - index = position >> 3; - value = 1 << (position & 7); - hw->multi_bits[index] |= (u8) value; - } - - for (i = 0; i < HW_MULTICAST_SIZE; i++) - writeb(hw->multi_bits[i], hw->io + KS884X_MULTICAST_0_OFFSET + - i); -} - -/** - * hw_set_multicast - enable or disable all multicast receiving - * @hw: The hardware instance. - * @multicast: To turn on or off the all multicast feature. - * - * This routine enables/disables the hardware to accept all multicast packets. - */ -static void hw_set_multicast(struct ksz_hw *hw, u8 multicast) -{ - /* Stop receiving for reconfiguration. */ - hw_stop_rx(hw); - - if (multicast) - hw->rx_cfg |= DMA_RX_ALL_MULTICAST; - else - hw->rx_cfg &= ~DMA_RX_ALL_MULTICAST; - - if (hw->enabled) - hw_start_rx(hw); -} - -/** - * hw_set_promiscuous - enable or disable promiscuous receiving - * @hw: The hardware instance. - * @prom: To turn on or off the promiscuous feature. - * - * This routine enables/disables the hardware to accept all packets. - */ -static void hw_set_promiscuous(struct ksz_hw *hw, u8 prom) -{ - /* Stop receiving for reconfiguration. */ - hw_stop_rx(hw); - - if (prom) - hw->rx_cfg |= DMA_RX_PROMISCUOUS; - else - hw->rx_cfg &= ~DMA_RX_PROMISCUOUS; - - if (hw->enabled) - hw_start_rx(hw); -} - -/** - * sw_enable - enable the switch - * @hw: The hardware instance. - * @enable: The flag to enable or disable the switch - * - * This routine is used to enable/disable the switch in KSZ8842. - */ -static void sw_enable(struct ksz_hw *hw, int enable) -{ - int port; - - for (port = 0; port < SWITCH_PORT_NUM; port++) { - if (hw->dev_count > 1) { - /* Set port-base vlan membership with host port. */ - sw_cfg_port_base_vlan(hw, port, - HOST_MASK | (1 << port)); - port_set_stp_state(hw, port, STP_STATE_DISABLED); - } else { - sw_cfg_port_base_vlan(hw, port, PORT_MASK); - port_set_stp_state(hw, port, STP_STATE_FORWARDING); - } - } - if (hw->dev_count > 1) - port_set_stp_state(hw, SWITCH_PORT_NUM, STP_STATE_SIMPLE); - else - port_set_stp_state(hw, SWITCH_PORT_NUM, STP_STATE_FORWARDING); - - if (enable) - enable = KS8842_START; - writew(enable, hw->io + KS884X_CHIP_ID_OFFSET); -} - -/** - * sw_setup - setup the switch - * @hw: The hardware instance. - * - * This routine setup the hardware switch engine for default operation. - */ -static void sw_setup(struct ksz_hw *hw) -{ - int port; - - sw_set_global_ctrl(hw); - - /* Enable switch broadcast storm protection at 10% percent rate. */ - sw_init_broad_storm(hw); - hw_cfg_broad_storm(hw, BROADCAST_STORM_PROTECTION_RATE); - for (port = 0; port < SWITCH_PORT_NUM; port++) - sw_ena_broad_storm(hw, port); - - sw_init_prio(hw); - - sw_init_mirror(hw); - - sw_init_prio_rate(hw); - - sw_init_vlan(hw); - - if (hw->features & STP_SUPPORT) - sw_init_stp(hw); - if (!sw_chk(hw, KS8842_SWITCH_CTRL_1_OFFSET, - SWITCH_TX_FLOW_CTRL | SWITCH_RX_FLOW_CTRL)) - hw->overrides |= PAUSE_FLOW_CTRL; - sw_enable(hw, 1); -} - -/** - * ksz_start_timer - start kernel timer - * @info: Kernel timer information. - * @time: The time tick. - * - * This routine starts the kernel timer after the specified time tick. - */ -static void ksz_start_timer(struct ksz_timer_info *info, int time) -{ - info->cnt = 0; - info->timer.expires = jiffies + time; - add_timer(&info->timer); - - /* infinity */ - info->max = -1; -} - -/** - * ksz_stop_timer - stop kernel timer - * @info: Kernel timer information. - * - * This routine stops the kernel timer. - */ -static void ksz_stop_timer(struct ksz_timer_info *info) -{ - if (info->max) { - info->max = 0; - del_timer_sync(&info->timer); - } -} - -static void ksz_init_timer(struct ksz_timer_info *info, int period, - void (*function)(unsigned long), void *data) -{ - info->max = 0; - info->period = period; - init_timer(&info->timer); - info->timer.function = function; - info->timer.data = (unsigned long) data; -} - -static void ksz_update_timer(struct ksz_timer_info *info) -{ - ++info->cnt; - if (info->max > 0) { - if (info->cnt < info->max) { - info->timer.expires = jiffies + info->period; - add_timer(&info->timer); - } else - info->max = 0; - } else if (info->max < 0) { - info->timer.expires = jiffies + info->period; - add_timer(&info->timer); - } -} - -/** - * ksz_alloc_soft_desc - allocate software descriptors - * @desc_info: Descriptor information structure. - * @transmit: Indication that descriptors are for transmit. - * - * This local function allocates software descriptors for manipulation in - * memory. - * - * Return 0 if successful. - */ -static int ksz_alloc_soft_desc(struct ksz_desc_info *desc_info, int transmit) -{ - desc_info->ring = kmalloc(sizeof(struct ksz_desc) * desc_info->alloc, - GFP_KERNEL); - if (!desc_info->ring) - return 1; - memset((void *) desc_info->ring, 0, - sizeof(struct ksz_desc) * desc_info->alloc); - hw_init_desc(desc_info, transmit); - return 0; -} - -/** - * ksz_alloc_desc - allocate hardware descriptors - * @adapter: Adapter information structure. - * - * This local function allocates hardware descriptors for receiving and - * transmitting. - * - * Return 0 if successful. - */ -static int ksz_alloc_desc(struct dev_info *adapter) -{ - struct ksz_hw *hw = &adapter->hw; - int offset; - - /* Allocate memory for RX & TX descriptors. */ - adapter->desc_pool.alloc_size = - hw->rx_desc_info.size * hw->rx_desc_info.alloc + - hw->tx_desc_info.size * hw->tx_desc_info.alloc + - DESC_ALIGNMENT; - - adapter->desc_pool.alloc_virt = - pci_alloc_consistent( - adapter->pdev, adapter->desc_pool.alloc_size, - &adapter->desc_pool.dma_addr); - if (adapter->desc_pool.alloc_virt == NULL) { - adapter->desc_pool.alloc_size = 0; - return 1; - } - memset(adapter->desc_pool.alloc_virt, 0, adapter->desc_pool.alloc_size); - - /* Align to the next cache line boundary. */ - offset = (((ulong) adapter->desc_pool.alloc_virt % DESC_ALIGNMENT) ? - (DESC_ALIGNMENT - - ((ulong) adapter->desc_pool.alloc_virt % DESC_ALIGNMENT)) : 0); - adapter->desc_pool.virt = adapter->desc_pool.alloc_virt + offset; - adapter->desc_pool.phys = adapter->desc_pool.dma_addr + offset; - - /* Allocate receive/transmit descriptors. */ - hw->rx_desc_info.ring_virt = (struct ksz_hw_desc *) - adapter->desc_pool.virt; - hw->rx_desc_info.ring_phys = adapter->desc_pool.phys; - offset = hw->rx_desc_info.alloc * hw->rx_desc_info.size; - hw->tx_desc_info.ring_virt = (struct ksz_hw_desc *) - (adapter->desc_pool.virt + offset); - hw->tx_desc_info.ring_phys = adapter->desc_pool.phys + offset; - - if (ksz_alloc_soft_desc(&hw->rx_desc_info, 0)) - return 1; - if (ksz_alloc_soft_desc(&hw->tx_desc_info, 1)) - return 1; - - return 0; -} - -/** - * free_dma_buf - release DMA buffer resources - * @adapter: Adapter information structure. - * - * This routine is just a helper function to release the DMA buffer resources. - */ -static void free_dma_buf(struct dev_info *adapter, struct ksz_dma_buf *dma_buf, - int direction) -{ - pci_unmap_single(adapter->pdev, dma_buf->dma, dma_buf->len, direction); - dev_kfree_skb(dma_buf->skb); - dma_buf->skb = NULL; - dma_buf->dma = 0; -} - -/** - * ksz_init_rx_buffers - initialize receive descriptors - * @adapter: Adapter information structure. - * - * This routine initializes DMA buffers for receiving. - */ -static void ksz_init_rx_buffers(struct dev_info *adapter) -{ - int i; - struct ksz_desc *desc; - struct ksz_dma_buf *dma_buf; - struct ksz_hw *hw = &adapter->hw; - struct ksz_desc_info *info = &hw->rx_desc_info; - - for (i = 0; i < hw->rx_desc_info.alloc; i++) { - get_rx_pkt(info, &desc); - - dma_buf = DMA_BUFFER(desc); - if (dma_buf->skb && dma_buf->len != adapter->mtu) - free_dma_buf(adapter, dma_buf, PCI_DMA_FROMDEVICE); - dma_buf->len = adapter->mtu; - if (!dma_buf->skb) - dma_buf->skb = alloc_skb(dma_buf->len, GFP_ATOMIC); - if (dma_buf->skb && !dma_buf->dma) { - dma_buf->skb->dev = adapter->dev; - dma_buf->dma = pci_map_single( - adapter->pdev, - skb_tail_pointer(dma_buf->skb), - dma_buf->len, - PCI_DMA_FROMDEVICE); - } - - /* Set descriptor. */ - set_rx_buf(desc, dma_buf->dma); - set_rx_len(desc, dma_buf->len); - release_desc(desc); - } -} - -/** - * ksz_alloc_mem - allocate memory for hardware descriptors - * @adapter: Adapter information structure. - * - * This function allocates memory for use by hardware descriptors for receiving - * and transmitting. - * - * Return 0 if successful. - */ -static int ksz_alloc_mem(struct dev_info *adapter) -{ - struct ksz_hw *hw = &adapter->hw; - - /* Determine the number of receive and transmit descriptors. */ - hw->rx_desc_info.alloc = NUM_OF_RX_DESC; - hw->tx_desc_info.alloc = NUM_OF_TX_DESC; - - /* Determine how many descriptors to skip transmit interrupt. */ - hw->tx_int_cnt = 0; - hw->tx_int_mask = NUM_OF_TX_DESC / 4; - if (hw->tx_int_mask > 8) - hw->tx_int_mask = 8; - while (hw->tx_int_mask) { - hw->tx_int_cnt++; - hw->tx_int_mask >>= 1; - } - if (hw->tx_int_cnt) { - hw->tx_int_mask = (1 << (hw->tx_int_cnt - 1)) - 1; - hw->tx_int_cnt = 0; - } - - /* Determine the descriptor size. */ - hw->rx_desc_info.size = - (((sizeof(struct ksz_hw_desc) + DESC_ALIGNMENT - 1) / - DESC_ALIGNMENT) * DESC_ALIGNMENT); - hw->tx_desc_info.size = - (((sizeof(struct ksz_hw_desc) + DESC_ALIGNMENT - 1) / - DESC_ALIGNMENT) * DESC_ALIGNMENT); - if (hw->rx_desc_info.size != sizeof(struct ksz_hw_desc)) - pr_alert("Hardware descriptor size not right!\n"); - ksz_check_desc_num(&hw->rx_desc_info); - ksz_check_desc_num(&hw->tx_desc_info); - - /* Allocate descriptors. */ - if (ksz_alloc_desc(adapter)) - return 1; - - return 0; -} - -/** - * ksz_free_desc - free software and hardware descriptors - * @adapter: Adapter information structure. - * - * This local routine frees the software and hardware descriptors allocated by - * ksz_alloc_desc(). - */ -static void ksz_free_desc(struct dev_info *adapter) -{ - struct ksz_hw *hw = &adapter->hw; - - /* Reset descriptor. */ - hw->rx_desc_info.ring_virt = NULL; - hw->tx_desc_info.ring_virt = NULL; - hw->rx_desc_info.ring_phys = 0; - hw->tx_desc_info.ring_phys = 0; - - /* Free memory. */ - if (adapter->desc_pool.alloc_virt) - pci_free_consistent( - adapter->pdev, - adapter->desc_pool.alloc_size, - adapter->desc_pool.alloc_virt, - adapter->desc_pool.dma_addr); - - /* Reset resource pool. */ - adapter->desc_pool.alloc_size = 0; - adapter->desc_pool.alloc_virt = NULL; - - kfree(hw->rx_desc_info.ring); - hw->rx_desc_info.ring = NULL; - kfree(hw->tx_desc_info.ring); - hw->tx_desc_info.ring = NULL; -} - -/** - * ksz_free_buffers - free buffers used in the descriptors - * @adapter: Adapter information structure. - * @desc_info: Descriptor information structure. - * - * This local routine frees buffers used in the DMA buffers. - */ -static void ksz_free_buffers(struct dev_info *adapter, - struct ksz_desc_info *desc_info, int direction) -{ - int i; - struct ksz_dma_buf *dma_buf; - struct ksz_desc *desc = desc_info->ring; - - for (i = 0; i < desc_info->alloc; i++) { - dma_buf = DMA_BUFFER(desc); - if (dma_buf->skb) - free_dma_buf(adapter, dma_buf, direction); - desc++; - } -} - -/** - * ksz_free_mem - free all resources used by descriptors - * @adapter: Adapter information structure. - * - * This local routine frees all the resources allocated by ksz_alloc_mem(). - */ -static void ksz_free_mem(struct dev_info *adapter) -{ - /* Free transmit buffers. */ - ksz_free_buffers(adapter, &adapter->hw.tx_desc_info, - PCI_DMA_TODEVICE); - - /* Free receive buffers. */ - ksz_free_buffers(adapter, &adapter->hw.rx_desc_info, - PCI_DMA_FROMDEVICE); - - /* Free descriptors. */ - ksz_free_desc(adapter); -} - -static void get_mib_counters(struct ksz_hw *hw, int first, int cnt, - u64 *counter) -{ - int i; - int mib; - int port; - struct ksz_port_mib *port_mib; - - memset(counter, 0, sizeof(u64) * TOTAL_PORT_COUNTER_NUM); - for (i = 0, port = first; i < cnt; i++, port++) { - port_mib = &hw->port_mib[port]; - for (mib = port_mib->mib_start; mib < hw->mib_cnt; mib++) - counter[mib] += port_mib->counter[mib]; - } -} - -/** - * send_packet - send packet - * @skb: Socket buffer. - * @dev: Network device. - * - * This routine is used to send a packet out to the network. - */ -static void send_packet(struct sk_buff *skb, struct net_device *dev) -{ - struct ksz_desc *desc; - struct ksz_desc *first; - struct dev_priv *priv = netdev_priv(dev); - struct dev_info *hw_priv = priv->adapter; - struct ksz_hw *hw = &hw_priv->hw; - struct ksz_desc_info *info = &hw->tx_desc_info; - struct ksz_dma_buf *dma_buf; - int len; - int last_frag = skb_shinfo(skb)->nr_frags; - - /* - * KSZ8842 with multiple device interfaces needs to be told which port - * to send. - */ - if (hw->dev_count > 1) - hw->dst_ports = 1 << priv->port.first_port; - - /* Hardware will pad the length to 60. */ - len = skb->len; - - /* Remember the very first descriptor. */ - first = info->cur; - desc = first; - - dma_buf = DMA_BUFFER(desc); - if (last_frag) { - int frag; - skb_frag_t *this_frag; - - dma_buf->len = skb_headlen(skb); - - dma_buf->dma = pci_map_single( - hw_priv->pdev, skb->data, dma_buf->len, - PCI_DMA_TODEVICE); - set_tx_buf(desc, dma_buf->dma); - set_tx_len(desc, dma_buf->len); - - frag = 0; - do { - this_frag = &skb_shinfo(skb)->frags[frag]; - - /* Get a new descriptor. */ - get_tx_pkt(info, &desc); - - /* Keep track of descriptors used so far. */ - ++hw->tx_int_cnt; - - dma_buf = DMA_BUFFER(desc); - dma_buf->len = this_frag->size; - - dma_buf->dma = pci_map_single( - hw_priv->pdev, - page_address(this_frag->page) + - this_frag->page_offset, - dma_buf->len, - PCI_DMA_TODEVICE); - set_tx_buf(desc, dma_buf->dma); - set_tx_len(desc, dma_buf->len); - - frag++; - if (frag == last_frag) - break; - - /* Do not release the last descriptor here. */ - release_desc(desc); - } while (1); - - /* current points to the last descriptor. */ - info->cur = desc; - - /* Release the first descriptor. */ - release_desc(first); - } else { - dma_buf->len = len; - - dma_buf->dma = pci_map_single( - hw_priv->pdev, skb->data, dma_buf->len, - PCI_DMA_TODEVICE); - set_tx_buf(desc, dma_buf->dma); - set_tx_len(desc, dma_buf->len); - } - - if (skb->ip_summed == CHECKSUM_PARTIAL) { - (desc)->sw.buf.tx.csum_gen_tcp = 1; - (desc)->sw.buf.tx.csum_gen_udp = 1; - } - - /* - * The last descriptor holds the packet so that it can be returned to - * network subsystem after all descriptors are transmitted. - */ - dma_buf->skb = skb; - - hw_send_pkt(hw); - - /* Update transmit statistics. */ - dev->stats.tx_packets++; - dev->stats.tx_bytes += len; -} - -/** - * transmit_cleanup - clean up transmit descriptors - * @dev: Network device. - * - * This routine is called to clean up the transmitted buffers. - */ -static void transmit_cleanup(struct dev_info *hw_priv, int normal) -{ - int last; - union desc_stat status; - struct ksz_hw *hw = &hw_priv->hw; - struct ksz_desc_info *info = &hw->tx_desc_info; - struct ksz_desc *desc; - struct ksz_dma_buf *dma_buf; - struct net_device *dev = NULL; - - spin_lock(&hw_priv->hwlock); - last = info->last; - - while (info->avail < info->alloc) { - /* Get next descriptor which is not hardware owned. */ - desc = &info->ring[last]; - status.data = le32_to_cpu(desc->phw->ctrl.data); - if (status.tx.hw_owned) { - if (normal) - break; - else - reset_desc(desc, status); - } - - dma_buf = DMA_BUFFER(desc); - pci_unmap_single( - hw_priv->pdev, dma_buf->dma, dma_buf->len, - PCI_DMA_TODEVICE); - - /* This descriptor contains the last buffer in the packet. */ - if (dma_buf->skb) { - dev = dma_buf->skb->dev; - - /* Release the packet back to network subsystem. */ - dev_kfree_skb_irq(dma_buf->skb); - dma_buf->skb = NULL; - } - - /* Free the transmitted descriptor. */ - last++; - last &= info->mask; - info->avail++; - } - info->last = last; - spin_unlock(&hw_priv->hwlock); - - /* Notify the network subsystem that the packet has been sent. */ - if (dev) - dev->trans_start = jiffies; -} - -/** - * transmit_done - transmit done processing - * @dev: Network device. - * - * This routine is called when the transmit interrupt is triggered, indicating - * either a packet is sent successfully or there are transmit errors. - */ -static void tx_done(struct dev_info *hw_priv) -{ - struct ksz_hw *hw = &hw_priv->hw; - int port; - - transmit_cleanup(hw_priv, 1); - - for (port = 0; port < hw->dev_count; port++) { - struct net_device *dev = hw->port_info[port].pdev; - - if (netif_running(dev) && netif_queue_stopped(dev)) - netif_wake_queue(dev); - } -} - -static inline void copy_old_skb(struct sk_buff *old, struct sk_buff *skb) -{ - skb->dev = old->dev; - skb->protocol = old->protocol; - skb->ip_summed = old->ip_summed; - skb->csum = old->csum; - skb_set_network_header(skb, ETH_HLEN); - - dev_kfree_skb(old); -} - -/** - * netdev_tx - send out packet - * @skb: Socket buffer. - * @dev: Network device. - * - * This function is used by the upper network layer to send out a packet. - * - * Return 0 if successful; otherwise an error code indicating failure. - */ -static netdev_tx_t netdev_tx(struct sk_buff *skb, struct net_device *dev) -{ - struct dev_priv *priv = netdev_priv(dev); - struct dev_info *hw_priv = priv->adapter; - struct ksz_hw *hw = &hw_priv->hw; - int left; - int num = 1; - int rc = 0; - - if (hw->features & SMALL_PACKET_TX_BUG) { - struct sk_buff *org_skb = skb; - - if (skb->len <= 48) { - if (skb_end_pointer(skb) - skb->data >= 50) { - memset(&skb->data[skb->len], 0, 50 - skb->len); - skb->len = 50; - } else { - skb = dev_alloc_skb(50); - if (!skb) - return NETDEV_TX_BUSY; - memcpy(skb->data, org_skb->data, org_skb->len); - memset(&skb->data[org_skb->len], 0, - 50 - org_skb->len); - skb->len = 50; - copy_old_skb(org_skb, skb); - } - } - } - - spin_lock_irq(&hw_priv->hwlock); - - num = skb_shinfo(skb)->nr_frags + 1; - left = hw_alloc_pkt(hw, skb->len, num); - if (left) { - if (left < num || - ((CHECKSUM_PARTIAL == skb->ip_summed) && - (ETH_P_IPV6 == htons(skb->protocol)))) { - struct sk_buff *org_skb = skb; - - skb = dev_alloc_skb(org_skb->len); - if (!skb) { - rc = NETDEV_TX_BUSY; - goto unlock; - } - skb_copy_and_csum_dev(org_skb, skb->data); - org_skb->ip_summed = CHECKSUM_NONE; - skb->len = org_skb->len; - copy_old_skb(org_skb, skb); - } - send_packet(skb, dev); - if (left <= num) - netif_stop_queue(dev); - } else { - /* Stop the transmit queue until packet is allocated. */ - netif_stop_queue(dev); - rc = NETDEV_TX_BUSY; - } -unlock: - spin_unlock_irq(&hw_priv->hwlock); - - return rc; -} - -/** - * netdev_tx_timeout - transmit timeout processing - * @dev: Network device. - * - * This routine is called when the transmit timer expires. That indicates the - * hardware is not running correctly because transmit interrupts are not - * triggered to free up resources so that the transmit routine can continue - * sending out packets. The hardware is reset to correct the problem. - */ -static void netdev_tx_timeout(struct net_device *dev) -{ - static unsigned long last_reset; - - struct dev_priv *priv = netdev_priv(dev); - struct dev_info *hw_priv = priv->adapter; - struct ksz_hw *hw = &hw_priv->hw; - int port; - - if (hw->dev_count > 1) { - /* - * Only reset the hardware if time between calls is long - * enough. - */ - if (jiffies - last_reset <= dev->watchdog_timeo) - hw_priv = NULL; - } - - last_reset = jiffies; - if (hw_priv) { - hw_dis_intr(hw); - hw_disable(hw); - - transmit_cleanup(hw_priv, 0); - hw_reset_pkts(&hw->rx_desc_info); - hw_reset_pkts(&hw->tx_desc_info); - ksz_init_rx_buffers(hw_priv); - - hw_reset(hw); - - hw_set_desc_base(hw, - hw->tx_desc_info.ring_phys, - hw->rx_desc_info.ring_phys); - hw_set_addr(hw); - if (hw->all_multi) - hw_set_multicast(hw, hw->all_multi); - else if (hw->multi_list_size) - hw_set_grp_addr(hw); - - if (hw->dev_count > 1) { - hw_set_add_addr(hw); - for (port = 0; port < SWITCH_PORT_NUM; port++) { - struct net_device *port_dev; - - port_set_stp_state(hw, port, - STP_STATE_DISABLED); - - port_dev = hw->port_info[port].pdev; - if (netif_running(port_dev)) - port_set_stp_state(hw, port, - STP_STATE_SIMPLE); - } - } - - hw_enable(hw); - hw_ena_intr(hw); - } - - dev->trans_start = jiffies; - netif_wake_queue(dev); -} - -static inline void csum_verified(struct sk_buff *skb) -{ - unsigned short protocol; - struct iphdr *iph; - - protocol = skb->protocol; - skb_reset_network_header(skb); - iph = (struct iphdr *) skb_network_header(skb); - if (protocol == htons(ETH_P_8021Q)) { - protocol = iph->tot_len; - skb_set_network_header(skb, VLAN_HLEN); - iph = (struct iphdr *) skb_network_header(skb); - } - if (protocol == htons(ETH_P_IP)) { - if (iph->protocol == IPPROTO_TCP) - skb->ip_summed = CHECKSUM_UNNECESSARY; - } -} - -static inline int rx_proc(struct net_device *dev, struct ksz_hw* hw, - struct ksz_desc *desc, union desc_stat status) -{ - int packet_len; - struct dev_priv *priv = netdev_priv(dev); - struct dev_info *hw_priv = priv->adapter; - struct ksz_dma_buf *dma_buf; - struct sk_buff *skb; - int rx_status; - - /* Received length includes 4-byte CRC. */ - packet_len = status.rx.frame_len - 4; - - dma_buf = DMA_BUFFER(desc); - pci_dma_sync_single_for_cpu( - hw_priv->pdev, dma_buf->dma, packet_len + 4, - PCI_DMA_FROMDEVICE); - - do { - /* skb->data != skb->head */ - skb = dev_alloc_skb(packet_len + 2); - if (!skb) { - dev->stats.rx_dropped++; - return -ENOMEM; - } - - /* - * Align socket buffer in 4-byte boundary for better - * performance. - */ - skb_reserve(skb, 2); - - memcpy(skb_put(skb, packet_len), - dma_buf->skb->data, packet_len); - } while (0); - - skb->protocol = eth_type_trans(skb, dev); - - if (hw->rx_cfg & (DMA_RX_CSUM_UDP | DMA_RX_CSUM_TCP)) - csum_verified(skb); - - /* Update receive statistics. */ - dev->stats.rx_packets++; - dev->stats.rx_bytes += packet_len; - - /* Notify upper layer for received packet. */ - rx_status = netif_rx(skb); - - return 0; -} - -static int dev_rcv_packets(struct dev_info *hw_priv) -{ - int next; - union desc_stat status; - struct ksz_hw *hw = &hw_priv->hw; - struct net_device *dev = hw->port_info[0].pdev; - struct ksz_desc_info *info = &hw->rx_desc_info; - int left = info->alloc; - struct ksz_desc *desc; - int received = 0; - - next = info->next; - while (left--) { - /* Get next descriptor which is not hardware owned. */ - desc = &info->ring[next]; - status.data = le32_to_cpu(desc->phw->ctrl.data); - if (status.rx.hw_owned) - break; - - /* Status valid only when last descriptor bit is set. */ - if (status.rx.last_desc && status.rx.first_desc) { - if (rx_proc(dev, hw, desc, status)) - goto release_packet; - received++; - } - -release_packet: - release_desc(desc); - next++; - next &= info->mask; - } - info->next = next; - - return received; -} - -static int port_rcv_packets(struct dev_info *hw_priv) -{ - int next; - union desc_stat status; - struct ksz_hw *hw = &hw_priv->hw; - struct net_device *dev = hw->port_info[0].pdev; - struct ksz_desc_info *info = &hw->rx_desc_info; - int left = info->alloc; - struct ksz_desc *desc; - int received = 0; - - next = info->next; - while (left--) { - /* Get next descriptor which is not hardware owned. */ - desc = &info->ring[next]; - status.data = le32_to_cpu(desc->phw->ctrl.data); - if (status.rx.hw_owned) - break; - - if (hw->dev_count > 1) { - /* Get received port number. */ - int p = HW_TO_DEV_PORT(status.rx.src_port); - - dev = hw->port_info[p].pdev; - if (!netif_running(dev)) - goto release_packet; - } - - /* Status valid only when last descriptor bit is set. */ - if (status.rx.last_desc && status.rx.first_desc) { - if (rx_proc(dev, hw, desc, status)) - goto release_packet; - received++; - } - -release_packet: - release_desc(desc); - next++; - next &= info->mask; - } - info->next = next; - - return received; -} - -static int dev_rcv_special(struct dev_info *hw_priv) -{ - int next; - union desc_stat status; - struct ksz_hw *hw = &hw_priv->hw; - struct net_device *dev = hw->port_info[0].pdev; - struct ksz_desc_info *info = &hw->rx_desc_info; - int left = info->alloc; - struct ksz_desc *desc; - int received = 0; - - next = info->next; - while (left--) { - /* Get next descriptor which is not hardware owned. */ - desc = &info->ring[next]; - status.data = le32_to_cpu(desc->phw->ctrl.data); - if (status.rx.hw_owned) - break; - - if (hw->dev_count > 1) { - /* Get received port number. */ - int p = HW_TO_DEV_PORT(status.rx.src_port); - - dev = hw->port_info[p].pdev; - if (!netif_running(dev)) - goto release_packet; - } - - /* Status valid only when last descriptor bit is set. */ - if (status.rx.last_desc && status.rx.first_desc) { - /* - * Receive without error. With receive errors - * disabled, packets with receive errors will be - * dropped, so no need to check the error bit. - */ - if (!status.rx.error || (status.data & - KS_DESC_RX_ERROR_COND) == - KS_DESC_RX_ERROR_TOO_LONG) { - if (rx_proc(dev, hw, desc, status)) - goto release_packet; - received++; - } else { - struct dev_priv *priv = netdev_priv(dev); - - /* Update receive error statistics. */ - priv->port.counter[OID_COUNTER_RCV_ERROR]++; - } - } - -release_packet: - release_desc(desc); - next++; - next &= info->mask; - } - info->next = next; - - return received; -} - -static void rx_proc_task(unsigned long data) -{ - struct dev_info *hw_priv = (struct dev_info *) data; - struct ksz_hw *hw = &hw_priv->hw; - - if (!hw->enabled) - return; - if (unlikely(!hw_priv->dev_rcv(hw_priv))) { - - /* In case receive process is suspended because of overrun. */ - hw_resume_rx(hw); - - /* tasklets are interruptible. */ - spin_lock_irq(&hw_priv->hwlock); - hw_turn_on_intr(hw, KS884X_INT_RX_MASK); - spin_unlock_irq(&hw_priv->hwlock); - } else { - hw_ack_intr(hw, KS884X_INT_RX); - tasklet_schedule(&hw_priv->rx_tasklet); - } -} - -static void tx_proc_task(unsigned long data) -{ - struct dev_info *hw_priv = (struct dev_info *) data; - struct ksz_hw *hw = &hw_priv->hw; - - hw_ack_intr(hw, KS884X_INT_TX_MASK); - - tx_done(hw_priv); - - /* tasklets are interruptible. */ - spin_lock_irq(&hw_priv->hwlock); - hw_turn_on_intr(hw, KS884X_INT_TX); - spin_unlock_irq(&hw_priv->hwlock); -} - -static inline void handle_rx_stop(struct ksz_hw *hw) -{ - /* Receive just has been stopped. */ - if (0 == hw->rx_stop) - hw->intr_mask &= ~KS884X_INT_RX_STOPPED; - else if (hw->rx_stop > 1) { - if (hw->enabled && (hw->rx_cfg & DMA_RX_ENABLE)) { - hw_start_rx(hw); - } else { - hw->intr_mask &= ~KS884X_INT_RX_STOPPED; - hw->rx_stop = 0; - } - } else - /* Receive just has been started. */ - hw->rx_stop++; -} - -/** - * netdev_intr - interrupt handling - * @irq: Interrupt number. - * @dev_id: Network device. - * - * This function is called by upper network layer to signal interrupt. - * - * Return IRQ_HANDLED if interrupt is handled. - */ -static irqreturn_t netdev_intr(int irq, void *dev_id) -{ - uint int_enable = 0; - struct net_device *dev = (struct net_device *) dev_id; - struct dev_priv *priv = netdev_priv(dev); - struct dev_info *hw_priv = priv->adapter; - struct ksz_hw *hw = &hw_priv->hw; - - hw_read_intr(hw, &int_enable); - - /* Not our interrupt! */ - if (!int_enable) - return IRQ_NONE; - - do { - hw_ack_intr(hw, int_enable); - int_enable &= hw->intr_mask; - - if (unlikely(int_enable & KS884X_INT_TX_MASK)) { - hw_dis_intr_bit(hw, KS884X_INT_TX_MASK); - tasklet_schedule(&hw_priv->tx_tasklet); - } - - if (likely(int_enable & KS884X_INT_RX)) { - hw_dis_intr_bit(hw, KS884X_INT_RX); - tasklet_schedule(&hw_priv->rx_tasklet); - } - - if (unlikely(int_enable & KS884X_INT_RX_OVERRUN)) { - dev->stats.rx_fifo_errors++; - hw_resume_rx(hw); - } - - if (unlikely(int_enable & KS884X_INT_PHY)) { - struct ksz_port *port = &priv->port; - - hw->features |= LINK_INT_WORKING; - port_get_link_speed(port); - } - - if (unlikely(int_enable & KS884X_INT_RX_STOPPED)) { - handle_rx_stop(hw); - break; - } - - if (unlikely(int_enable & KS884X_INT_TX_STOPPED)) { - u32 data; - - hw->intr_mask &= ~KS884X_INT_TX_STOPPED; - pr_info("Tx stopped\n"); - data = readl(hw->io + KS_DMA_TX_CTRL); - if (!(data & DMA_TX_ENABLE)) - pr_info("Tx disabled\n"); - break; - } - } while (0); - - hw_ena_intr(hw); - - return IRQ_HANDLED; -} - -/* - * Linux network device functions - */ - -static unsigned long next_jiffies; - -#ifdef CONFIG_NET_POLL_CONTROLLER -static void netdev_netpoll(struct net_device *dev) -{ - struct dev_priv *priv = netdev_priv(dev); - struct dev_info *hw_priv = priv->adapter; - - hw_dis_intr(&hw_priv->hw); - netdev_intr(dev->irq, dev); -} -#endif - -static void bridge_change(struct ksz_hw *hw) -{ - int port; - u8 member; - struct ksz_switch *sw = hw->ksz_switch; - - /* No ports in forwarding state. */ - if (!sw->member) { - port_set_stp_state(hw, SWITCH_PORT_NUM, STP_STATE_SIMPLE); - sw_block_addr(hw); - } - for (port = 0; port < SWITCH_PORT_NUM; port++) { - if (STP_STATE_FORWARDING == sw->port_cfg[port].stp_state) - member = HOST_MASK | sw->member; - else - member = HOST_MASK | (1 << port); - if (member != sw->port_cfg[port].member) - sw_cfg_port_base_vlan(hw, port, member); - } -} - -/** - * netdev_close - close network device - * @dev: Network device. - * - * This function process the close operation of network device. This is caused - * by the user command "ifconfig ethX down." - * - * Return 0 if successful; otherwise an error code indicating failure. - */ -static int netdev_close(struct net_device *dev) -{ - struct dev_priv *priv = netdev_priv(dev); - struct dev_info *hw_priv = priv->adapter; - struct ksz_port *port = &priv->port; - struct ksz_hw *hw = &hw_priv->hw; - int pi; - - netif_stop_queue(dev); - - ksz_stop_timer(&priv->monitor_timer_info); - - /* Need to shut the port manually in multiple device interfaces mode. */ - if (hw->dev_count > 1) { - port_set_stp_state(hw, port->first_port, STP_STATE_DISABLED); - - /* Port is closed. Need to change bridge setting. */ - if (hw->features & STP_SUPPORT) { - pi = 1 << port->first_port; - if (hw->ksz_switch->member & pi) { - hw->ksz_switch->member &= ~pi; - bridge_change(hw); - } - } - } - if (port->first_port > 0) - hw_del_addr(hw, dev->dev_addr); - if (!hw_priv->wol_enable) - port_set_power_saving(port, true); - - if (priv->multicast) - --hw->all_multi; - if (priv->promiscuous) - --hw->promiscuous; - - hw_priv->opened--; - if (!(hw_priv->opened)) { - ksz_stop_timer(&hw_priv->mib_timer_info); - flush_work(&hw_priv->mib_read); - - hw_dis_intr(hw); - hw_disable(hw); - hw_clr_multicast(hw); - - /* Delay for receive task to stop scheduling itself. */ - msleep(2000 / HZ); - - tasklet_disable(&hw_priv->rx_tasklet); - tasklet_disable(&hw_priv->tx_tasklet); - free_irq(dev->irq, hw_priv->dev); - - transmit_cleanup(hw_priv, 0); - hw_reset_pkts(&hw->rx_desc_info); - hw_reset_pkts(&hw->tx_desc_info); - - /* Clean out static MAC table when the switch is shutdown. */ - if (hw->features & STP_SUPPORT) - sw_clr_sta_mac_table(hw); - } - - return 0; -} - -static void hw_cfg_huge_frame(struct dev_info *hw_priv, struct ksz_hw *hw) -{ - if (hw->ksz_switch) { - u32 data; - - data = readw(hw->io + KS8842_SWITCH_CTRL_2_OFFSET); - if (hw->features & RX_HUGE_FRAME) - data |= SWITCH_HUGE_PACKET; - else - data &= ~SWITCH_HUGE_PACKET; - writew(data, hw->io + KS8842_SWITCH_CTRL_2_OFFSET); - } - if (hw->features & RX_HUGE_FRAME) { - hw->rx_cfg |= DMA_RX_ERROR; - hw_priv->dev_rcv = dev_rcv_special; - } else { - hw->rx_cfg &= ~DMA_RX_ERROR; - if (hw->dev_count > 1) - hw_priv->dev_rcv = port_rcv_packets; - else - hw_priv->dev_rcv = dev_rcv_packets; - } -} - -static int prepare_hardware(struct net_device *dev) -{ - struct dev_priv *priv = netdev_priv(dev); - struct dev_info *hw_priv = priv->adapter; - struct ksz_hw *hw = &hw_priv->hw; - int rc = 0; - - /* Remember the network device that requests interrupts. */ - hw_priv->dev = dev; - rc = request_irq(dev->irq, netdev_intr, IRQF_SHARED, dev->name, dev); - if (rc) - return rc; - tasklet_enable(&hw_priv->rx_tasklet); - tasklet_enable(&hw_priv->tx_tasklet); - - hw->promiscuous = 0; - hw->all_multi = 0; - hw->multi_list_size = 0; - - hw_reset(hw); - - hw_set_desc_base(hw, - hw->tx_desc_info.ring_phys, hw->rx_desc_info.ring_phys); - hw_set_addr(hw); - hw_cfg_huge_frame(hw_priv, hw); - ksz_init_rx_buffers(hw_priv); - return 0; -} - -static void set_media_state(struct net_device *dev, int media_state) -{ - struct dev_priv *priv = netdev_priv(dev); - - if (media_state == priv->media_state) - netif_carrier_on(dev); - else - netif_carrier_off(dev); - netif_info(priv, link, dev, "link %s\n", - media_state == priv->media_state ? "on" : "off"); -} - -/** - * netdev_open - open network device - * @dev: Network device. - * - * This function process the open operation of network device. This is caused - * by the user command "ifconfig ethX up." - * - * Return 0 if successful; otherwise an error code indicating failure. - */ -static int netdev_open(struct net_device *dev) -{ - struct dev_priv *priv = netdev_priv(dev); - struct dev_info *hw_priv = priv->adapter; - struct ksz_hw *hw = &hw_priv->hw; - struct ksz_port *port = &priv->port; - int i; - int p; - int rc = 0; - - priv->multicast = 0; - priv->promiscuous = 0; - - /* Reset device statistics. */ - memset(&dev->stats, 0, sizeof(struct net_device_stats)); - memset((void *) port->counter, 0, - (sizeof(u64) * OID_COUNTER_LAST)); - - if (!(hw_priv->opened)) { - rc = prepare_hardware(dev); - if (rc) - return rc; - for (i = 0; i < hw->mib_port_cnt; i++) { - if (next_jiffies < jiffies) - next_jiffies = jiffies + HZ * 2; - else - next_jiffies += HZ * 1; - hw_priv->counter[i].time = next_jiffies; - hw->port_mib[i].state = media_disconnected; - port_init_cnt(hw, i); - } - if (hw->ksz_switch) - hw->port_mib[HOST_PORT].state = media_connected; - else { - hw_add_wol_bcast(hw); - hw_cfg_wol_pme(hw, 0); - hw_clr_wol_pme_status(&hw_priv->hw); - } - } - port_set_power_saving(port, false); - - for (i = 0, p = port->first_port; i < port->port_cnt; i++, p++) { - /* - * Initialize to invalid value so that link detection - * is done. - */ - hw->port_info[p].partner = 0xFF; - hw->port_info[p].state = media_disconnected; - } - - /* Need to open the port in multiple device interfaces mode. */ - if (hw->dev_count > 1) { - port_set_stp_state(hw, port->first_port, STP_STATE_SIMPLE); - if (port->first_port > 0) - hw_add_addr(hw, dev->dev_addr); - } - - port_get_link_speed(port); - if (port->force_link) - port_force_link_speed(port); - else - port_set_link_speed(port); - - if (!(hw_priv->opened)) { - hw_setup_intr(hw); - hw_enable(hw); - hw_ena_intr(hw); - - if (hw->mib_port_cnt) - ksz_start_timer(&hw_priv->mib_timer_info, - hw_priv->mib_timer_info.period); - } - - hw_priv->opened++; - - ksz_start_timer(&priv->monitor_timer_info, - priv->monitor_timer_info.period); - - priv->media_state = port->linked->state; - - set_media_state(dev, media_connected); - netif_start_queue(dev); - - return 0; -} - -/* RX errors = rx_errors */ -/* RX dropped = rx_dropped */ -/* RX overruns = rx_fifo_errors */ -/* RX frame = rx_crc_errors + rx_frame_errors + rx_length_errors */ -/* TX errors = tx_errors */ -/* TX dropped = tx_dropped */ -/* TX overruns = tx_fifo_errors */ -/* TX carrier = tx_aborted_errors + tx_carrier_errors + tx_window_errors */ -/* collisions = collisions */ - -/** - * netdev_query_statistics - query network device statistics - * @dev: Network device. - * - * This function returns the statistics of the network device. The device - * needs not be opened. - * - * Return network device statistics. - */ -static struct net_device_stats *netdev_query_statistics(struct net_device *dev) -{ - struct dev_priv *priv = netdev_priv(dev); - struct ksz_port *port = &priv->port; - struct ksz_hw *hw = &priv->adapter->hw; - struct ksz_port_mib *mib; - int i; - int p; - - dev->stats.rx_errors = port->counter[OID_COUNTER_RCV_ERROR]; - dev->stats.tx_errors = port->counter[OID_COUNTER_XMIT_ERROR]; - - /* Reset to zero to add count later. */ - dev->stats.multicast = 0; - dev->stats.collisions = 0; - dev->stats.rx_length_errors = 0; - dev->stats.rx_crc_errors = 0; - dev->stats.rx_frame_errors = 0; - dev->stats.tx_window_errors = 0; - - for (i = 0, p = port->first_port; i < port->mib_port_cnt; i++, p++) { - mib = &hw->port_mib[p]; - - dev->stats.multicast += (unsigned long) - mib->counter[MIB_COUNTER_RX_MULTICAST]; - - dev->stats.collisions += (unsigned long) - mib->counter[MIB_COUNTER_TX_TOTAL_COLLISION]; - - dev->stats.rx_length_errors += (unsigned long)( - mib->counter[MIB_COUNTER_RX_UNDERSIZE] + - mib->counter[MIB_COUNTER_RX_FRAGMENT] + - mib->counter[MIB_COUNTER_RX_OVERSIZE] + - mib->counter[MIB_COUNTER_RX_JABBER]); - dev->stats.rx_crc_errors += (unsigned long) - mib->counter[MIB_COUNTER_RX_CRC_ERR]; - dev->stats.rx_frame_errors += (unsigned long)( - mib->counter[MIB_COUNTER_RX_ALIGNMENT_ERR] + - mib->counter[MIB_COUNTER_RX_SYMBOL_ERR]); - - dev->stats.tx_window_errors += (unsigned long) - mib->counter[MIB_COUNTER_TX_LATE_COLLISION]; - } - - return &dev->stats; -} - -/** - * netdev_set_mac_address - set network device MAC address - * @dev: Network device. - * @addr: Buffer of MAC address. - * - * This function is used to set the MAC address of the network device. - * - * Return 0 to indicate success. - */ -static int netdev_set_mac_address(struct net_device *dev, void *addr) -{ - struct dev_priv *priv = netdev_priv(dev); - struct dev_info *hw_priv = priv->adapter; - struct ksz_hw *hw = &hw_priv->hw; - struct sockaddr *mac = addr; - uint interrupt; - - if (priv->port.first_port > 0) - hw_del_addr(hw, dev->dev_addr); - else { - hw->mac_override = 1; - memcpy(hw->override_addr, mac->sa_data, MAC_ADDR_LEN); - } - - memcpy(dev->dev_addr, mac->sa_data, MAX_ADDR_LEN); - - interrupt = hw_block_intr(hw); - - if (priv->port.first_port > 0) - hw_add_addr(hw, dev->dev_addr); - else - hw_set_addr(hw); - hw_restore_intr(hw, interrupt); - - return 0; -} - -static void dev_set_promiscuous(struct net_device *dev, struct dev_priv *priv, - struct ksz_hw *hw, int promiscuous) -{ - if (promiscuous != priv->promiscuous) { - u8 prev_state = hw->promiscuous; - - if (promiscuous) - ++hw->promiscuous; - else - --hw->promiscuous; - priv->promiscuous = promiscuous; - - /* Turn on/off promiscuous mode. */ - if (hw->promiscuous <= 1 && prev_state <= 1) - hw_set_promiscuous(hw, hw->promiscuous); - - /* - * Port is not in promiscuous mode, meaning it is released - * from the bridge. - */ - if ((hw->features & STP_SUPPORT) && !promiscuous && - (dev->priv_flags & IFF_BRIDGE_PORT)) { - struct ksz_switch *sw = hw->ksz_switch; - int port = priv->port.first_port; - - port_set_stp_state(hw, port, STP_STATE_DISABLED); - port = 1 << port; - if (sw->member & port) { - sw->member &= ~port; - bridge_change(hw); - } - } - } -} - -static void dev_set_multicast(struct dev_priv *priv, struct ksz_hw *hw, - int multicast) -{ - if (multicast != priv->multicast) { - u8 all_multi = hw->all_multi; - - if (multicast) - ++hw->all_multi; - else - --hw->all_multi; - priv->multicast = multicast; - - /* Turn on/off all multicast mode. */ - if (hw->all_multi <= 1 && all_multi <= 1) - hw_set_multicast(hw, hw->all_multi); - } -} - -/** - * netdev_set_rx_mode - * @dev: Network device. - * - * This routine is used to set multicast addresses or put the network device - * into promiscuous mode. - */ -static void netdev_set_rx_mode(struct net_device *dev) -{ - struct dev_priv *priv = netdev_priv(dev); - struct dev_info *hw_priv = priv->adapter; - struct ksz_hw *hw = &hw_priv->hw; - struct netdev_hw_addr *ha; - int multicast = (dev->flags & IFF_ALLMULTI); - - dev_set_promiscuous(dev, priv, hw, (dev->flags & IFF_PROMISC)); - - if (hw_priv->hw.dev_count > 1) - multicast |= (dev->flags & IFF_MULTICAST); - dev_set_multicast(priv, hw, multicast); - - /* Cannot use different hashes in multiple device interfaces mode. */ - if (hw_priv->hw.dev_count > 1) - return; - - if ((dev->flags & IFF_MULTICAST) && !netdev_mc_empty(dev)) { - int i = 0; - - /* List too big to support so turn on all multicast mode. */ - if (netdev_mc_count(dev) > MAX_MULTICAST_LIST) { - if (MAX_MULTICAST_LIST != hw->multi_list_size) { - hw->multi_list_size = MAX_MULTICAST_LIST; - ++hw->all_multi; - hw_set_multicast(hw, hw->all_multi); - } - return; - } - - netdev_for_each_mc_addr(ha, dev) { - if (i >= MAX_MULTICAST_LIST) - break; - memcpy(hw->multi_list[i++], ha->addr, MAC_ADDR_LEN); - } - hw->multi_list_size = (u8) i; - hw_set_grp_addr(hw); - } else { - if (MAX_MULTICAST_LIST == hw->multi_list_size) { - --hw->all_multi; - hw_set_multicast(hw, hw->all_multi); - } - hw->multi_list_size = 0; - hw_clr_multicast(hw); - } -} - -static int netdev_change_mtu(struct net_device *dev, int new_mtu) -{ - struct dev_priv *priv = netdev_priv(dev); - struct dev_info *hw_priv = priv->adapter; - struct ksz_hw *hw = &hw_priv->hw; - int hw_mtu; - - if (netif_running(dev)) - return -EBUSY; - - /* Cannot use different MTU in multiple device interfaces mode. */ - if (hw->dev_count > 1) - if (dev != hw_priv->dev) - return 0; - if (new_mtu < 60) - return -EINVAL; - - if (dev->mtu != new_mtu) { - hw_mtu = new_mtu + ETHERNET_HEADER_SIZE + 4; - if (hw_mtu > MAX_RX_BUF_SIZE) - return -EINVAL; - if (hw_mtu > REGULAR_RX_BUF_SIZE) { - hw->features |= RX_HUGE_FRAME; - hw_mtu = MAX_RX_BUF_SIZE; - } else { - hw->features &= ~RX_HUGE_FRAME; - hw_mtu = REGULAR_RX_BUF_SIZE; - } - hw_mtu = (hw_mtu + 3) & ~3; - hw_priv->mtu = hw_mtu; - dev->mtu = new_mtu; - } - return 0; -} - -/** - * netdev_ioctl - I/O control processing - * @dev: Network device. - * @ifr: Interface request structure. - * @cmd: I/O control code. - * - * This function is used to process I/O control calls. - * - * Return 0 to indicate success. - */ -static int netdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) -{ - struct dev_priv *priv = netdev_priv(dev); - struct dev_info *hw_priv = priv->adapter; - struct ksz_hw *hw = &hw_priv->hw; - struct ksz_port *port = &priv->port; - int rc; - int result = 0; - struct mii_ioctl_data *data = if_mii(ifr); - - if (down_interruptible(&priv->proc_sem)) - return -ERESTARTSYS; - - /* assume success */ - rc = 0; - switch (cmd) { - /* Get address of MII PHY in use. */ - case SIOCGMIIPHY: - data->phy_id = priv->id; - - /* Fallthrough... */ - - /* Read MII PHY register. */ - case SIOCGMIIREG: - if (data->phy_id != priv->id || data->reg_num >= 6) - result = -EIO; - else - hw_r_phy(hw, port->linked->port_id, data->reg_num, - &data->val_out); - break; - - /* Write MII PHY register. */ - case SIOCSMIIREG: - if (!capable(CAP_NET_ADMIN)) - result = -EPERM; - else if (data->phy_id != priv->id || data->reg_num >= 6) - result = -EIO; - else - hw_w_phy(hw, port->linked->port_id, data->reg_num, - data->val_in); - break; - - default: - result = -EOPNOTSUPP; - } - - up(&priv->proc_sem); - - return result; -} - -/* - * MII support - */ - -/** - * mdio_read - read PHY register - * @dev: Network device. - * @phy_id: The PHY id. - * @reg_num: The register number. - * - * This function returns the PHY register value. - * - * Return the register value. - */ -static int mdio_read(struct net_device *dev, int phy_id, int reg_num) -{ - struct dev_priv *priv = netdev_priv(dev); - struct ksz_port *port = &priv->port; - struct ksz_hw *hw = port->hw; - u16 val_out; - - hw_r_phy(hw, port->linked->port_id, reg_num << 1, &val_out); - return val_out; -} - -/** - * mdio_write - set PHY register - * @dev: Network device. - * @phy_id: The PHY id. - * @reg_num: The register number. - * @val: The register value. - * - * This procedure sets the PHY register value. - */ -static void mdio_write(struct net_device *dev, int phy_id, int reg_num, int val) -{ - struct dev_priv *priv = netdev_priv(dev); - struct ksz_port *port = &priv->port; - struct ksz_hw *hw = port->hw; - int i; - int pi; - - for (i = 0, pi = port->first_port; i < port->port_cnt; i++, pi++) - hw_w_phy(hw, pi, reg_num << 1, val); -} - -/* - * ethtool support - */ - -#define EEPROM_SIZE 0x40 - -static u16 eeprom_data[EEPROM_SIZE] = { 0 }; - -#define ADVERTISED_ALL \ - (ADVERTISED_10baseT_Half | \ - ADVERTISED_10baseT_Full | \ - ADVERTISED_100baseT_Half | \ - ADVERTISED_100baseT_Full) - -/* These functions use the MII functions in mii.c. */ - -/** - * netdev_get_settings - get network device settings - * @dev: Network device. - * @cmd: Ethtool command. - * - * This function queries the PHY and returns its state in the ethtool command. - * - * Return 0 if successful; otherwise an error code. - */ -static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) -{ - struct dev_priv *priv = netdev_priv(dev); - struct dev_info *hw_priv = priv->adapter; - - mutex_lock(&hw_priv->lock); - mii_ethtool_gset(&priv->mii_if, cmd); - cmd->advertising |= SUPPORTED_TP; - mutex_unlock(&hw_priv->lock); - - /* Save advertised settings for workaround in next function. */ - priv->advertising = cmd->advertising; - return 0; -} - -/** - * netdev_set_settings - set network device settings - * @dev: Network device. - * @cmd: Ethtool command. - * - * This function sets the PHY according to the ethtool command. - * - * Return 0 if successful; otherwise an error code. - */ -static int netdev_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) -{ - struct dev_priv *priv = netdev_priv(dev); - struct dev_info *hw_priv = priv->adapter; - struct ksz_port *port = &priv->port; - u32 speed = ethtool_cmd_speed(cmd); - int rc; - - /* - * ethtool utility does not change advertised setting if auto - * negotiation is not specified explicitly. - */ - if (cmd->autoneg && priv->advertising == cmd->advertising) { - cmd->advertising |= ADVERTISED_ALL; - if (10 == speed) - cmd->advertising &= - ~(ADVERTISED_100baseT_Full | - ADVERTISED_100baseT_Half); - else if (100 == speed) - cmd->advertising &= - ~(ADVERTISED_10baseT_Full | - ADVERTISED_10baseT_Half); - if (0 == cmd->duplex) - cmd->advertising &= - ~(ADVERTISED_100baseT_Full | - ADVERTISED_10baseT_Full); - else if (1 == cmd->duplex) - cmd->advertising &= - ~(ADVERTISED_100baseT_Half | - ADVERTISED_10baseT_Half); - } - mutex_lock(&hw_priv->lock); - if (cmd->autoneg && - (cmd->advertising & ADVERTISED_ALL) == - ADVERTISED_ALL) { - port->duplex = 0; - port->speed = 0; - port->force_link = 0; - } else { - port->duplex = cmd->duplex + 1; - if (1000 != speed) - port->speed = speed; - if (cmd->autoneg) - port->force_link = 0; - else - port->force_link = 1; - } - rc = mii_ethtool_sset(&priv->mii_if, cmd); - mutex_unlock(&hw_priv->lock); - return rc; -} - -/** - * netdev_nway_reset - restart auto-negotiation - * @dev: Network device. - * - * This function restarts the PHY for auto-negotiation. - * - * Return 0 if successful; otherwise an error code. - */ -static int netdev_nway_reset(struct net_device *dev) -{ - struct dev_priv *priv = netdev_priv(dev); - struct dev_info *hw_priv = priv->adapter; - int rc; - - mutex_lock(&hw_priv->lock); - rc = mii_nway_restart(&priv->mii_if); - mutex_unlock(&hw_priv->lock); - return rc; -} - -/** - * netdev_get_link - get network device link status - * @dev: Network device. - * - * This function gets the link status from the PHY. - * - * Return true if PHY is linked and false otherwise. - */ -static u32 netdev_get_link(struct net_device *dev) -{ - struct dev_priv *priv = netdev_priv(dev); - int rc; - - rc = mii_link_ok(&priv->mii_if); - return rc; -} - -/** - * netdev_get_drvinfo - get network driver information - * @dev: Network device. - * @info: Ethtool driver info data structure. - * - * This procedure returns the driver information. - */ -static void netdev_get_drvinfo(struct net_device *dev, - struct ethtool_drvinfo *info) -{ - struct dev_priv *priv = netdev_priv(dev); - struct dev_info *hw_priv = priv->adapter; - - strcpy(info->driver, DRV_NAME); - strcpy(info->version, DRV_VERSION); - strcpy(info->bus_info, pci_name(hw_priv->pdev)); -} - -/** - * netdev_get_regs_len - get length of register dump - * @dev: Network device. - * - * This function returns the length of the register dump. - * - * Return length of the register dump. - */ -static struct hw_regs { - int start; - int end; -} hw_regs_range[] = { - { KS_DMA_TX_CTRL, KS884X_INTERRUPTS_STATUS }, - { KS_ADD_ADDR_0_LO, KS_ADD_ADDR_F_HI }, - { KS884X_ADDR_0_OFFSET, KS8841_WOL_FRAME_BYTE2_OFFSET }, - { KS884X_SIDER_P, KS8842_SGCR7_P }, - { KS8842_MACAR1_P, KS8842_TOSR8_P }, - { KS884X_P1MBCR_P, KS8842_P3ERCR_P }, - { 0, 0 } -}; - -static int netdev_get_regs_len(struct net_device *dev) -{ - struct hw_regs *range = hw_regs_range; - int regs_len = 0x10 * sizeof(u32); - - while (range->end > range->start) { - regs_len += (range->end - range->start + 3) / 4 * 4; - range++; - } - return regs_len; -} - -/** - * netdev_get_regs - get register dump - * @dev: Network device. - * @regs: Ethtool registers data structure. - * @ptr: Buffer to store the register values. - * - * This procedure dumps the register values in the provided buffer. - */ -static void netdev_get_regs(struct net_device *dev, struct ethtool_regs *regs, - void *ptr) -{ - struct dev_priv *priv = netdev_priv(dev); - struct dev_info *hw_priv = priv->adapter; - struct ksz_hw *hw = &hw_priv->hw; - int *buf = (int *) ptr; - struct hw_regs *range = hw_regs_range; - int len; - - mutex_lock(&hw_priv->lock); - regs->version = 0; - for (len = 0; len < 0x40; len += 4) { - pci_read_config_dword(hw_priv->pdev, len, buf); - buf++; - } - while (range->end > range->start) { - for (len = range->start; len < range->end; len += 4) { - *buf = readl(hw->io + len); - buf++; - } - range++; - } - mutex_unlock(&hw_priv->lock); -} - -#define WOL_SUPPORT \ - (WAKE_PHY | WAKE_MAGIC | \ - WAKE_UCAST | WAKE_MCAST | \ - WAKE_BCAST | WAKE_ARP) - -/** - * netdev_get_wol - get Wake-on-LAN support - * @dev: Network device. - * @wol: Ethtool Wake-on-LAN data structure. - * - * This procedure returns Wake-on-LAN support. - */ -static void netdev_get_wol(struct net_device *dev, - struct ethtool_wolinfo *wol) -{ - struct dev_priv *priv = netdev_priv(dev); - struct dev_info *hw_priv = priv->adapter; - - wol->supported = hw_priv->wol_support; - wol->wolopts = hw_priv->wol_enable; - memset(&wol->sopass, 0, sizeof(wol->sopass)); -} - -/** - * netdev_set_wol - set Wake-on-LAN support - * @dev: Network device. - * @wol: Ethtool Wake-on-LAN data structure. - * - * This function sets Wake-on-LAN support. - * - * Return 0 if successful; otherwise an error code. - */ -static int netdev_set_wol(struct net_device *dev, - struct ethtool_wolinfo *wol) -{ - struct dev_priv *priv = netdev_priv(dev); - struct dev_info *hw_priv = priv->adapter; - - /* Need to find a way to retrieve the device IP address. */ - static const u8 net_addr[] = { 192, 168, 1, 1 }; - - if (wol->wolopts & ~hw_priv->wol_support) - return -EINVAL; - - hw_priv->wol_enable = wol->wolopts; - - /* Link wakeup cannot really be disabled. */ - if (wol->wolopts) - hw_priv->wol_enable |= WAKE_PHY; - hw_enable_wol(&hw_priv->hw, hw_priv->wol_enable, net_addr); - return 0; -} - -/** - * netdev_get_msglevel - get debug message level - * @dev: Network device. - * - * This function returns current debug message level. - * - * Return current debug message flags. - */ -static u32 netdev_get_msglevel(struct net_device *dev) -{ - struct dev_priv *priv = netdev_priv(dev); - - return priv->msg_enable; -} - -/** - * netdev_set_msglevel - set debug message level - * @dev: Network device. - * @value: Debug message flags. - * - * This procedure sets debug message level. - */ -static void netdev_set_msglevel(struct net_device *dev, u32 value) -{ - struct dev_priv *priv = netdev_priv(dev); - - priv->msg_enable = value; -} - -/** - * netdev_get_eeprom_len - get EEPROM length - * @dev: Network device. - * - * This function returns the length of the EEPROM. - * - * Return length of the EEPROM. - */ -static int netdev_get_eeprom_len(struct net_device *dev) -{ - return EEPROM_SIZE * 2; -} - -/** - * netdev_get_eeprom - get EEPROM data - * @dev: Network device. - * @eeprom: Ethtool EEPROM data structure. - * @data: Buffer to store the EEPROM data. - * - * This function dumps the EEPROM data in the provided buffer. - * - * Return 0 if successful; otherwise an error code. - */ -#define EEPROM_MAGIC 0x10A18842 - -static int netdev_get_eeprom(struct net_device *dev, - struct ethtool_eeprom *eeprom, u8 *data) -{ - struct dev_priv *priv = netdev_priv(dev); - struct dev_info *hw_priv = priv->adapter; - u8 *eeprom_byte = (u8 *) eeprom_data; - int i; - int len; - - len = (eeprom->offset + eeprom->len + 1) / 2; - for (i = eeprom->offset / 2; i < len; i++) - eeprom_data[i] = eeprom_read(&hw_priv->hw, i); - eeprom->magic = EEPROM_MAGIC; - memcpy(data, &eeprom_byte[eeprom->offset], eeprom->len); - - return 0; -} - -/** - * netdev_set_eeprom - write EEPROM data - * @dev: Network device. - * @eeprom: Ethtool EEPROM data structure. - * @data: Data buffer. - * - * This function modifies the EEPROM data one byte at a time. - * - * Return 0 if successful; otherwise an error code. - */ -static int netdev_set_eeprom(struct net_device *dev, - struct ethtool_eeprom *eeprom, u8 *data) -{ - struct dev_priv *priv = netdev_priv(dev); - struct dev_info *hw_priv = priv->adapter; - u16 eeprom_word[EEPROM_SIZE]; - u8 *eeprom_byte = (u8 *) eeprom_word; - int i; - int len; - - if (eeprom->magic != EEPROM_MAGIC) - return -EINVAL; - - len = (eeprom->offset + eeprom->len + 1) / 2; - for (i = eeprom->offset / 2; i < len; i++) - eeprom_data[i] = eeprom_read(&hw_priv->hw, i); - memcpy(eeprom_word, eeprom_data, EEPROM_SIZE * 2); - memcpy(&eeprom_byte[eeprom->offset], data, eeprom->len); - for (i = 0; i < EEPROM_SIZE; i++) - if (eeprom_word[i] != eeprom_data[i]) { - eeprom_data[i] = eeprom_word[i]; - eeprom_write(&hw_priv->hw, i, eeprom_data[i]); - } - - return 0; -} - -/** - * netdev_get_pauseparam - get flow control parameters - * @dev: Network device. - * @pause: Ethtool PAUSE settings data structure. - * - * This procedure returns the PAUSE control flow settings. - */ -static void netdev_get_pauseparam(struct net_device *dev, - struct ethtool_pauseparam *pause) -{ - struct dev_priv *priv = netdev_priv(dev); - struct dev_info *hw_priv = priv->adapter; - struct ksz_hw *hw = &hw_priv->hw; - - pause->autoneg = (hw->overrides & PAUSE_FLOW_CTRL) ? 0 : 1; - if (!hw->ksz_switch) { - pause->rx_pause = - (hw->rx_cfg & DMA_RX_FLOW_ENABLE) ? 1 : 0; - pause->tx_pause = - (hw->tx_cfg & DMA_TX_FLOW_ENABLE) ? 1 : 0; - } else { - pause->rx_pause = - (sw_chk(hw, KS8842_SWITCH_CTRL_1_OFFSET, - SWITCH_RX_FLOW_CTRL)) ? 1 : 0; - pause->tx_pause = - (sw_chk(hw, KS8842_SWITCH_CTRL_1_OFFSET, - SWITCH_TX_FLOW_CTRL)) ? 1 : 0; - } -} - -/** - * netdev_set_pauseparam - set flow control parameters - * @dev: Network device. - * @pause: Ethtool PAUSE settings data structure. - * - * This function sets the PAUSE control flow settings. - * Not implemented yet. - * - * Return 0 if successful; otherwise an error code. - */ -static int netdev_set_pauseparam(struct net_device *dev, - struct ethtool_pauseparam *pause) -{ - struct dev_priv *priv = netdev_priv(dev); - struct dev_info *hw_priv = priv->adapter; - struct ksz_hw *hw = &hw_priv->hw; - struct ksz_port *port = &priv->port; - - mutex_lock(&hw_priv->lock); - if (pause->autoneg) { - if (!pause->rx_pause && !pause->tx_pause) - port->flow_ctrl = PHY_NO_FLOW_CTRL; - else - port->flow_ctrl = PHY_FLOW_CTRL; - hw->overrides &= ~PAUSE_FLOW_CTRL; - port->force_link = 0; - if (hw->ksz_switch) { - sw_cfg(hw, KS8842_SWITCH_CTRL_1_OFFSET, - SWITCH_RX_FLOW_CTRL, 1); - sw_cfg(hw, KS8842_SWITCH_CTRL_1_OFFSET, - SWITCH_TX_FLOW_CTRL, 1); - } - port_set_link_speed(port); - } else { - hw->overrides |= PAUSE_FLOW_CTRL; - if (hw->ksz_switch) { - sw_cfg(hw, KS8842_SWITCH_CTRL_1_OFFSET, - SWITCH_RX_FLOW_CTRL, pause->rx_pause); - sw_cfg(hw, KS8842_SWITCH_CTRL_1_OFFSET, - SWITCH_TX_FLOW_CTRL, pause->tx_pause); - } else - set_flow_ctrl(hw, pause->rx_pause, pause->tx_pause); - } - mutex_unlock(&hw_priv->lock); - - return 0; -} - -/** - * netdev_get_ringparam - get tx/rx ring parameters - * @dev: Network device. - * @pause: Ethtool RING settings data structure. - * - * This procedure returns the TX/RX ring settings. - */ -static void netdev_get_ringparam(struct net_device *dev, - struct ethtool_ringparam *ring) -{ - struct dev_priv *priv = netdev_priv(dev); - struct dev_info *hw_priv = priv->adapter; - struct ksz_hw *hw = &hw_priv->hw; - - ring->tx_max_pending = (1 << 9); - ring->tx_pending = hw->tx_desc_info.alloc; - ring->rx_max_pending = (1 << 9); - ring->rx_pending = hw->rx_desc_info.alloc; -} - -#define STATS_LEN (TOTAL_PORT_COUNTER_NUM) - -static struct { - char string[ETH_GSTRING_LEN]; -} ethtool_stats_keys[STATS_LEN] = { - { "rx_lo_priority_octets" }, - { "rx_hi_priority_octets" }, - { "rx_undersize_packets" }, - { "rx_fragments" }, - { "rx_oversize_packets" }, - { "rx_jabbers" }, - { "rx_symbol_errors" }, - { "rx_crc_errors" }, - { "rx_align_errors" }, - { "rx_mac_ctrl_packets" }, - { "rx_pause_packets" }, - { "rx_bcast_packets" }, - { "rx_mcast_packets" }, - { "rx_ucast_packets" }, - { "rx_64_or_less_octet_packets" }, - { "rx_65_to_127_octet_packets" }, - { "rx_128_to_255_octet_packets" }, - { "rx_256_to_511_octet_packets" }, - { "rx_512_to_1023_octet_packets" }, - { "rx_1024_to_1522_octet_packets" }, - - { "tx_lo_priority_octets" }, - { "tx_hi_priority_octets" }, - { "tx_late_collisions" }, - { "tx_pause_packets" }, - { "tx_bcast_packets" }, - { "tx_mcast_packets" }, - { "tx_ucast_packets" }, - { "tx_deferred" }, - { "tx_total_collisions" }, - { "tx_excessive_collisions" }, - { "tx_single_collisions" }, - { "tx_mult_collisions" }, - - { "rx_discards" }, - { "tx_discards" }, -}; - -/** - * netdev_get_strings - get statistics identity strings - * @dev: Network device. - * @stringset: String set identifier. - * @buf: Buffer to store the strings. - * - * This procedure returns the strings used to identify the statistics. - */ -static void netdev_get_strings(struct net_device *dev, u32 stringset, u8 *buf) -{ - struct dev_priv *priv = netdev_priv(dev); - struct dev_info *hw_priv = priv->adapter; - struct ksz_hw *hw = &hw_priv->hw; - - if (ETH_SS_STATS == stringset) - memcpy(buf, ðtool_stats_keys, - ETH_GSTRING_LEN * hw->mib_cnt); -} - -/** - * netdev_get_sset_count - get statistics size - * @dev: Network device. - * @sset: The statistics set number. - * - * This function returns the size of the statistics to be reported. - * - * Return size of the statistics to be reported. - */ -static int netdev_get_sset_count(struct net_device *dev, int sset) -{ - struct dev_priv *priv = netdev_priv(dev); - struct dev_info *hw_priv = priv->adapter; - struct ksz_hw *hw = &hw_priv->hw; - - switch (sset) { - case ETH_SS_STATS: - return hw->mib_cnt; - default: - return -EOPNOTSUPP; - } -} - -/** - * netdev_get_ethtool_stats - get network device statistics - * @dev: Network device. - * @stats: Ethtool statistics data structure. - * @data: Buffer to store the statistics. - * - * This procedure returns the statistics. - */ -static void netdev_get_ethtool_stats(struct net_device *dev, - struct ethtool_stats *stats, u64 *data) -{ - struct dev_priv *priv = netdev_priv(dev); - struct dev_info *hw_priv = priv->adapter; - struct ksz_hw *hw = &hw_priv->hw; - struct ksz_port *port = &priv->port; - int n_stats = stats->n_stats; - int i; - int n; - int p; - int rc; - u64 counter[TOTAL_PORT_COUNTER_NUM]; - - mutex_lock(&hw_priv->lock); - n = SWITCH_PORT_NUM; - for (i = 0, p = port->first_port; i < port->mib_port_cnt; i++, p++) { - if (media_connected == hw->port_mib[p].state) { - hw_priv->counter[p].read = 1; - - /* Remember first port that requests read. */ - if (n == SWITCH_PORT_NUM) - n = p; - } - } - mutex_unlock(&hw_priv->lock); - - if (n < SWITCH_PORT_NUM) - schedule_work(&hw_priv->mib_read); - - if (1 == port->mib_port_cnt && n < SWITCH_PORT_NUM) { - p = n; - rc = wait_event_interruptible_timeout( - hw_priv->counter[p].counter, - 2 == hw_priv->counter[p].read, - HZ * 1); - } else - for (i = 0, p = n; i < port->mib_port_cnt - n; i++, p++) { - if (0 == i) { - rc = wait_event_interruptible_timeout( - hw_priv->counter[p].counter, - 2 == hw_priv->counter[p].read, - HZ * 2); - } else if (hw->port_mib[p].cnt_ptr) { - rc = wait_event_interruptible_timeout( - hw_priv->counter[p].counter, - 2 == hw_priv->counter[p].read, - HZ * 1); - } - } - - get_mib_counters(hw, port->first_port, port->mib_port_cnt, counter); - n = hw->mib_cnt; - if (n > n_stats) - n = n_stats; - n_stats -= n; - for (i = 0; i < n; i++) - *data++ = counter[i]; -} - -/** - * netdev_set_features - set receive checksum support - * @dev: Network device. - * @features: New device features (offloads). - * - * This function sets receive checksum support setting. - * - * Return 0 if successful; otherwise an error code. - */ -static int netdev_set_features(struct net_device *dev, u32 features) -{ - struct dev_priv *priv = netdev_priv(dev); - struct dev_info *hw_priv = priv->adapter; - struct ksz_hw *hw = &hw_priv->hw; - - mutex_lock(&hw_priv->lock); - - /* see note in hw_setup() */ - if (features & NETIF_F_RXCSUM) - hw->rx_cfg |= DMA_RX_CSUM_TCP | DMA_RX_CSUM_IP; - else - hw->rx_cfg &= ~(DMA_RX_CSUM_TCP | DMA_RX_CSUM_IP); - - if (hw->enabled) - writel(hw->rx_cfg, hw->io + KS_DMA_RX_CTRL); - - mutex_unlock(&hw_priv->lock); - - return 0; -} - -static struct ethtool_ops netdev_ethtool_ops = { - .get_settings = netdev_get_settings, - .set_settings = netdev_set_settings, - .nway_reset = netdev_nway_reset, - .get_link = netdev_get_link, - .get_drvinfo = netdev_get_drvinfo, - .get_regs_len = netdev_get_regs_len, - .get_regs = netdev_get_regs, - .get_wol = netdev_get_wol, - .set_wol = netdev_set_wol, - .get_msglevel = netdev_get_msglevel, - .set_msglevel = netdev_set_msglevel, - .get_eeprom_len = netdev_get_eeprom_len, - .get_eeprom = netdev_get_eeprom, - .set_eeprom = netdev_set_eeprom, - .get_pauseparam = netdev_get_pauseparam, - .set_pauseparam = netdev_set_pauseparam, - .get_ringparam = netdev_get_ringparam, - .get_strings = netdev_get_strings, - .get_sset_count = netdev_get_sset_count, - .get_ethtool_stats = netdev_get_ethtool_stats, -}; - -/* - * Hardware monitoring - */ - -static void update_link(struct net_device *dev, struct dev_priv *priv, - struct ksz_port *port) -{ - if (priv->media_state != port->linked->state) { - priv->media_state = port->linked->state; - if (netif_running(dev)) - set_media_state(dev, media_connected); - } -} - -static void mib_read_work(struct work_struct *work) -{ - struct dev_info *hw_priv = - container_of(work, struct dev_info, mib_read); - struct ksz_hw *hw = &hw_priv->hw; - struct ksz_port_mib *mib; - int i; - - next_jiffies = jiffies; - for (i = 0; i < hw->mib_port_cnt; i++) { - mib = &hw->port_mib[i]; - - /* Reading MIB counters or requested to read. */ - if (mib->cnt_ptr || 1 == hw_priv->counter[i].read) { - - /* Need to process receive interrupt. */ - if (port_r_cnt(hw, i)) - break; - hw_priv->counter[i].read = 0; - - /* Finish reading counters. */ - if (0 == mib->cnt_ptr) { - hw_priv->counter[i].read = 2; - wake_up_interruptible( - &hw_priv->counter[i].counter); - } - } else if (jiffies >= hw_priv->counter[i].time) { - /* Only read MIB counters when the port is connected. */ - if (media_connected == mib->state) - hw_priv->counter[i].read = 1; - next_jiffies += HZ * 1 * hw->mib_port_cnt; - hw_priv->counter[i].time = next_jiffies; - - /* Port is just disconnected. */ - } else if (mib->link_down) { - mib->link_down = 0; - - /* Read counters one last time after link is lost. */ - hw_priv->counter[i].read = 1; - } - } -} - -static void mib_monitor(unsigned long ptr) -{ - struct dev_info *hw_priv = (struct dev_info *) ptr; - - mib_read_work(&hw_priv->mib_read); - - /* This is used to verify Wake-on-LAN is working. */ - if (hw_priv->pme_wait) { - if (hw_priv->pme_wait <= jiffies) { - hw_clr_wol_pme_status(&hw_priv->hw); - hw_priv->pme_wait = 0; - } - } else if (hw_chk_wol_pme_status(&hw_priv->hw)) { - - /* PME is asserted. Wait 2 seconds to clear it. */ - hw_priv->pme_wait = jiffies + HZ * 2; - } - - ksz_update_timer(&hw_priv->mib_timer_info); -} - -/** - * dev_monitor - periodic monitoring - * @ptr: Network device pointer. - * - * This routine is run in a kernel timer to monitor the network device. - */ -static void dev_monitor(unsigned long ptr) -{ - struct net_device *dev = (struct net_device *) ptr; - struct dev_priv *priv = netdev_priv(dev); - struct dev_info *hw_priv = priv->adapter; - struct ksz_hw *hw = &hw_priv->hw; - struct ksz_port *port = &priv->port; - - if (!(hw->features & LINK_INT_WORKING)) - port_get_link_speed(port); - update_link(dev, priv, port); - - ksz_update_timer(&priv->monitor_timer_info); -} - -/* - * Linux network device interface functions - */ - -/* Driver exported variables */ - -static int msg_enable; - -static char *macaddr = ":"; -static char *mac1addr = ":"; - -/* - * This enables multiple network device mode for KSZ8842, which contains a - * switch with two physical ports. Some users like to take control of the - * ports for running Spanning Tree Protocol. The driver will create an - * additional eth? device for the other port. - * - * Some limitations are the network devices cannot have different MTU and - * multicast hash tables. - */ -static int multi_dev; - -/* - * As most users select multiple network device mode to use Spanning Tree - * Protocol, this enables a feature in which most unicast and multicast packets - * are forwarded inside the switch and not passed to the host. Only packets - * that need the host's attention are passed to it. This prevents the host - * wasting CPU time to examine each and every incoming packets and do the - * forwarding itself. - * - * As the hack requires the private bridge header, the driver cannot compile - * with just the kernel headers. - * - * Enabling STP support also turns on multiple network device mode. - */ -static int stp; - -/* - * This enables fast aging in the KSZ8842 switch. Not sure what situation - * needs that. However, fast aging is used to flush the dynamic MAC table when - * STP suport is enabled. - */ -static int fast_aging; - -/** - * netdev_init - initialize network device. - * @dev: Network device. - * - * This function initializes the network device. - * - * Return 0 if successful; otherwise an error code indicating failure. - */ -static int __init netdev_init(struct net_device *dev) -{ - struct dev_priv *priv = netdev_priv(dev); - - /* 500 ms timeout */ - ksz_init_timer(&priv->monitor_timer_info, 500 * HZ / 1000, - dev_monitor, dev); - - /* 500 ms timeout */ - dev->watchdog_timeo = HZ / 2; - - dev->hw_features = NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_RXCSUM; - - /* - * Hardware does not really support IPv6 checksum generation, but - * driver actually runs faster with this on. - */ - dev->hw_features |= NETIF_F_IPV6_CSUM; - - dev->features |= dev->hw_features; - - sema_init(&priv->proc_sem, 1); - - priv->mii_if.phy_id_mask = 0x1; - priv->mii_if.reg_num_mask = 0x7; - priv->mii_if.dev = dev; - priv->mii_if.mdio_read = mdio_read; - priv->mii_if.mdio_write = mdio_write; - priv->mii_if.phy_id = priv->port.first_port + 1; - - priv->msg_enable = netif_msg_init(msg_enable, - (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)); - - return 0; -} - -static const struct net_device_ops netdev_ops = { - .ndo_init = netdev_init, - .ndo_open = netdev_open, - .ndo_stop = netdev_close, - .ndo_get_stats = netdev_query_statistics, - .ndo_start_xmit = netdev_tx, - .ndo_tx_timeout = netdev_tx_timeout, - .ndo_change_mtu = netdev_change_mtu, - .ndo_set_features = netdev_set_features, - .ndo_set_mac_address = netdev_set_mac_address, - .ndo_validate_addr = eth_validate_addr, - .ndo_do_ioctl = netdev_ioctl, - .ndo_set_rx_mode = netdev_set_rx_mode, -#ifdef CONFIG_NET_POLL_CONTROLLER - .ndo_poll_controller = netdev_netpoll, -#endif -}; - -static void netdev_free(struct net_device *dev) -{ - if (dev->watchdog_timeo) - unregister_netdev(dev); - - free_netdev(dev); -} - -struct platform_info { - struct dev_info dev_info; - struct net_device *netdev[SWITCH_PORT_NUM]; -}; - -static int net_device_present; - -static void get_mac_addr(struct dev_info *hw_priv, u8 *macaddr, int port) -{ - int i; - int j; - int got_num; - int num; - - i = j = num = got_num = 0; - while (j < MAC_ADDR_LEN) { - if (macaddr[i]) { - int digit; - - got_num = 1; - digit = hex_to_bin(macaddr[i]); - if (digit >= 0) - num = num * 16 + digit; - else if (':' == macaddr[i]) - got_num = 2; - else - break; - } else if (got_num) - got_num = 2; - else - break; - if (2 == got_num) { - if (MAIN_PORT == port) { - hw_priv->hw.override_addr[j++] = (u8) num; - hw_priv->hw.override_addr[5] += - hw_priv->hw.id; - } else { - hw_priv->hw.ksz_switch->other_addr[j++] = - (u8) num; - hw_priv->hw.ksz_switch->other_addr[5] += - hw_priv->hw.id; - } - num = got_num = 0; - } - i++; - } - if (MAC_ADDR_LEN == j) { - if (MAIN_PORT == port) - hw_priv->hw.mac_override = 1; - } -} - -#define KS884X_DMA_MASK (~0x0UL) - -static void read_other_addr(struct ksz_hw *hw) -{ - int i; - u16 data[3]; - struct ksz_switch *sw = hw->ksz_switch; - - for (i = 0; i < 3; i++) - data[i] = eeprom_read(hw, i + EEPROM_DATA_OTHER_MAC_ADDR); - if ((data[0] || data[1] || data[2]) && data[0] != 0xffff) { - sw->other_addr[5] = (u8) data[0]; - sw->other_addr[4] = (u8)(data[0] >> 8); - sw->other_addr[3] = (u8) data[1]; - sw->other_addr[2] = (u8)(data[1] >> 8); - sw->other_addr[1] = (u8) data[2]; - sw->other_addr[0] = (u8)(data[2] >> 8); - } -} - -#ifndef PCI_VENDOR_ID_MICREL_KS -#define PCI_VENDOR_ID_MICREL_KS 0x16c6 -#endif - -static int __devinit pcidev_init(struct pci_dev *pdev, - const struct pci_device_id *id) -{ - struct net_device *dev; - struct dev_priv *priv; - struct dev_info *hw_priv; - struct ksz_hw *hw; - struct platform_info *info; - struct ksz_port *port; - unsigned long reg_base; - unsigned long reg_len; - int cnt; - int i; - int mib_port_count; - int pi; - int port_count; - int result; - char banner[sizeof(version)]; - struct ksz_switch *sw = NULL; - - result = pci_enable_device(pdev); - if (result) - return result; - - result = -ENODEV; - - if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) || - pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) - return result; - - reg_base = pci_resource_start(pdev, 0); - reg_len = pci_resource_len(pdev, 0); - if ((pci_resource_flags(pdev, 0) & IORESOURCE_IO) != 0) - return result; - - if (!request_mem_region(reg_base, reg_len, DRV_NAME)) - return result; - pci_set_master(pdev); - - result = -ENOMEM; - - info = kzalloc(sizeof(struct platform_info), GFP_KERNEL); - if (!info) - goto pcidev_init_dev_err; - - hw_priv = &info->dev_info; - hw_priv->pdev = pdev; - - hw = &hw_priv->hw; - - hw->io = ioremap(reg_base, reg_len); - if (!hw->io) - goto pcidev_init_io_err; - - cnt = hw_init(hw); - if (!cnt) { - if (msg_enable & NETIF_MSG_PROBE) - pr_alert("chip not detected\n"); - result = -ENODEV; - goto pcidev_init_alloc_err; - } - - snprintf(banner, sizeof(banner), "%s", version); - banner[13] = cnt + '0'; /* Replace x in "Micrel KSZ884x" */ - dev_info(&hw_priv->pdev->dev, "%s\n", banner); - dev_dbg(&hw_priv->pdev->dev, "Mem = %p; IRQ = %d\n", hw->io, pdev->irq); - - /* Assume device is KSZ8841. */ - hw->dev_count = 1; - port_count = 1; - mib_port_count = 1; - hw->addr_list_size = 0; - hw->mib_cnt = PORT_COUNTER_NUM; - hw->mib_port_cnt = 1; - - /* KSZ8842 has a switch with multiple ports. */ - if (2 == cnt) { - if (fast_aging) - hw->overrides |= FAST_AGING; - - hw->mib_cnt = TOTAL_PORT_COUNTER_NUM; - - /* Multiple network device interfaces are required. */ - if (multi_dev) { - hw->dev_count = SWITCH_PORT_NUM; - hw->addr_list_size = SWITCH_PORT_NUM - 1; - } - - /* Single network device has multiple ports. */ - if (1 == hw->dev_count) { - port_count = SWITCH_PORT_NUM; - mib_port_count = SWITCH_PORT_NUM; - } - hw->mib_port_cnt = TOTAL_PORT_NUM; - hw->ksz_switch = kzalloc(sizeof(struct ksz_switch), GFP_KERNEL); - if (!hw->ksz_switch) - goto pcidev_init_alloc_err; - - sw = hw->ksz_switch; - } - for (i = 0; i < hw->mib_port_cnt; i++) - hw->port_mib[i].mib_start = 0; - - hw->parent = hw_priv; - - /* Default MTU is 1500. */ - hw_priv->mtu = (REGULAR_RX_BUF_SIZE + 3) & ~3; - - if (ksz_alloc_mem(hw_priv)) - goto pcidev_init_mem_err; - - hw_priv->hw.id = net_device_present; - - spin_lock_init(&hw_priv->hwlock); - mutex_init(&hw_priv->lock); - - /* tasklet is enabled. */ - tasklet_init(&hw_priv->rx_tasklet, rx_proc_task, - (unsigned long) hw_priv); - tasklet_init(&hw_priv->tx_tasklet, tx_proc_task, - (unsigned long) hw_priv); - - /* tasklet_enable will decrement the atomic counter. */ - tasklet_disable(&hw_priv->rx_tasklet); - tasklet_disable(&hw_priv->tx_tasklet); - - for (i = 0; i < TOTAL_PORT_NUM; i++) - init_waitqueue_head(&hw_priv->counter[i].counter); - - if (macaddr[0] != ':') - get_mac_addr(hw_priv, macaddr, MAIN_PORT); - - /* Read MAC address and initialize override address if not overrided. */ - hw_read_addr(hw); - - /* Multiple device interfaces mode requires a second MAC address. */ - if (hw->dev_count > 1) { - memcpy(sw->other_addr, hw->override_addr, MAC_ADDR_LEN); - read_other_addr(hw); - if (mac1addr[0] != ':') - get_mac_addr(hw_priv, mac1addr, OTHER_PORT); - } - - hw_setup(hw); - if (hw->ksz_switch) - sw_setup(hw); - else { - hw_priv->wol_support = WOL_SUPPORT; - hw_priv->wol_enable = 0; - } - - INIT_WORK(&hw_priv->mib_read, mib_read_work); - - /* 500 ms timeout */ - ksz_init_timer(&hw_priv->mib_timer_info, 500 * HZ / 1000, - mib_monitor, hw_priv); - - for (i = 0; i < hw->dev_count; i++) { - dev = alloc_etherdev(sizeof(struct dev_priv)); - if (!dev) - goto pcidev_init_reg_err; - info->netdev[i] = dev; - - priv = netdev_priv(dev); - priv->adapter = hw_priv; - priv->id = net_device_present++; - - port = &priv->port; - port->port_cnt = port_count; - port->mib_port_cnt = mib_port_count; - port->first_port = i; - port->flow_ctrl = PHY_FLOW_CTRL; - - port->hw = hw; - port->linked = &hw->port_info[port->first_port]; - - for (cnt = 0, pi = i; cnt < port_count; cnt++, pi++) { - hw->port_info[pi].port_id = pi; - hw->port_info[pi].pdev = dev; - hw->port_info[pi].state = media_disconnected; - } - - dev->mem_start = (unsigned long) hw->io; - dev->mem_end = dev->mem_start + reg_len - 1; - dev->irq = pdev->irq; - if (MAIN_PORT == i) - memcpy(dev->dev_addr, hw_priv->hw.override_addr, - MAC_ADDR_LEN); - else { - memcpy(dev->dev_addr, sw->other_addr, - MAC_ADDR_LEN); - if (!memcmp(sw->other_addr, hw->override_addr, - MAC_ADDR_LEN)) - dev->dev_addr[5] += port->first_port; - } - - dev->netdev_ops = &netdev_ops; - SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops); - if (register_netdev(dev)) - goto pcidev_init_reg_err; - port_set_power_saving(port, true); - } - - pci_dev_get(hw_priv->pdev); - pci_set_drvdata(pdev, info); - return 0; - -pcidev_init_reg_err: - for (i = 0; i < hw->dev_count; i++) { - if (info->netdev[i]) { - netdev_free(info->netdev[i]); - info->netdev[i] = NULL; - } - } - -pcidev_init_mem_err: - ksz_free_mem(hw_priv); - kfree(hw->ksz_switch); - -pcidev_init_alloc_err: - iounmap(hw->io); - -pcidev_init_io_err: - kfree(info); - -pcidev_init_dev_err: - release_mem_region(reg_base, reg_len); - - return result; -} - -static void pcidev_exit(struct pci_dev *pdev) -{ - int i; - struct platform_info *info = pci_get_drvdata(pdev); - struct dev_info *hw_priv = &info->dev_info; - - pci_set_drvdata(pdev, NULL); - - release_mem_region(pci_resource_start(pdev, 0), - pci_resource_len(pdev, 0)); - for (i = 0; i < hw_priv->hw.dev_count; i++) { - if (info->netdev[i]) - netdev_free(info->netdev[i]); - } - if (hw_priv->hw.io) - iounmap(hw_priv->hw.io); - ksz_free_mem(hw_priv); - kfree(hw_priv->hw.ksz_switch); - pci_dev_put(hw_priv->pdev); - kfree(info); -} - -#ifdef CONFIG_PM -static int pcidev_resume(struct pci_dev *pdev) -{ - int i; - struct platform_info *info = pci_get_drvdata(pdev); - struct dev_info *hw_priv = &info->dev_info; - struct ksz_hw *hw = &hw_priv->hw; - - pci_set_power_state(pdev, PCI_D0); - pci_restore_state(pdev); - pci_enable_wake(pdev, PCI_D0, 0); - - if (hw_priv->wol_enable) - hw_cfg_wol_pme(hw, 0); - for (i = 0; i < hw->dev_count; i++) { - if (info->netdev[i]) { - struct net_device *dev = info->netdev[i]; - - if (netif_running(dev)) { - netdev_open(dev); - netif_device_attach(dev); - } - } - } - return 0; -} - -static int pcidev_suspend(struct pci_dev *pdev, pm_message_t state) -{ - int i; - struct platform_info *info = pci_get_drvdata(pdev); - struct dev_info *hw_priv = &info->dev_info; - struct ksz_hw *hw = &hw_priv->hw; - - /* Need to find a way to retrieve the device IP address. */ - static const u8 net_addr[] = { 192, 168, 1, 1 }; - - for (i = 0; i < hw->dev_count; i++) { - if (info->netdev[i]) { - struct net_device *dev = info->netdev[i]; - - if (netif_running(dev)) { - netif_device_detach(dev); - netdev_close(dev); - } - } - } - if (hw_priv->wol_enable) { - hw_enable_wol(hw, hw_priv->wol_enable, net_addr); - hw_cfg_wol_pme(hw, 1); - } - - pci_save_state(pdev); - pci_enable_wake(pdev, pci_choose_state(pdev, state), 1); - pci_set_power_state(pdev, pci_choose_state(pdev, state)); - return 0; -} -#endif - -static char pcidev_name[] = "ksz884xp"; - -static struct pci_device_id pcidev_table[] = { - { PCI_VENDOR_ID_MICREL_KS, 0x8841, - PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, - { PCI_VENDOR_ID_MICREL_KS, 0x8842, - PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, - { 0 } -}; - -MODULE_DEVICE_TABLE(pci, pcidev_table); - -static struct pci_driver pci_device_driver = { -#ifdef CONFIG_PM - .suspend = pcidev_suspend, - .resume = pcidev_resume, -#endif - .name = pcidev_name, - .id_table = pcidev_table, - .probe = pcidev_init, - .remove = pcidev_exit -}; - -static int __init ksz884x_init_module(void) -{ - return pci_register_driver(&pci_device_driver); -} - -static void __exit ksz884x_cleanup_module(void) -{ - pci_unregister_driver(&pci_device_driver); -} - -module_init(ksz884x_init_module); -module_exit(ksz884x_cleanup_module); - -MODULE_DESCRIPTION("KSZ8841/2 PCI network driver"); -MODULE_AUTHOR("Tristram Ha <Tristram.Ha@micrel.com>"); -MODULE_LICENSE("GPL"); - -module_param_named(message, msg_enable, int, 0); -MODULE_PARM_DESC(message, "Message verbosity level (0=none, 31=all)"); - -module_param(macaddr, charp, 0); -module_param(mac1addr, charp, 0); -module_param(fast_aging, int, 0); -module_param(multi_dev, int, 0); -module_param(stp, int, 0); -MODULE_PARM_DESC(macaddr, "MAC address"); -MODULE_PARM_DESC(mac1addr, "Second MAC address"); -MODULE_PARM_DESC(fast_aging, "Fast aging"); -MODULE_PARM_DESC(multi_dev, "Multiple device interfaces"); -MODULE_PARM_DESC(stp, "STP support"); |