| /* |
| * Copyright (c) 2013 Qualcomm Atheros, Inc. |
| * |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| #include <config.h> |
| #include <linux/types.h> |
| #include <common.h> |
| #include <miiphy.h> |
| #include "phy.h" |
| #include <asm/addrspace.h> |
| #include "ar7240_soc.h" |
| #include "athrsf1_phy.h" |
| |
| #define MODULE_NAME "ATHRSF2_PHY" |
| |
| #define ATHR_LAN_PORT_VLAN 1 |
| #define ATHR_WAN_PORT_VLAN 2 |
| #define ENET_UNIT_LAN 1 |
| #define ENET_UNIT_WAN 0 |
| |
| #define TRUE 1 |
| #define FALSE 0 |
| |
| #define ATHR_PHY_MAX 5 |
| #define ATHR_PHY0_ADDR 0x0 |
| #define ATHR_PHY1_ADDR 0x1 |
| #define ATHR_PHY2_ADDR 0x2 |
| #define ATHR_PHY3_ADDR 0x3 |
| #define ATHR_PHY4_ADDR 0x4 |
| #define ATHR_PHY5_ADDR 0x5 |
| |
| #define ATHR_DEBUG_PORT_ADDRESS 29 |
| #define ATHR_DEBUG_PORT_DATA 30 |
| |
| /* |
| * Track per-PHY port information. |
| */ |
| typedef struct { |
| BOOL isEnetPort; /* normal enet port */ |
| BOOL isPhyAlive; /* last known state of link */ |
| int ethUnit; /* MAC associated with this phy port */ |
| uint32_t phyBase; |
| uint32_t phyAddr; /* PHY registers associated with this phy port */ |
| uint32_t VLANTableSetting; /* Value to be written to VLAN table */ |
| } athrPhyInfo_t; |
| |
| /* |
| * Per-PHY information, indexed by PHY unit number. |
| */ |
| |
| static athrPhyInfo_t athrPhyInfo[] = { |
| {TRUE, /* port 1 -- LAN port 1 */ |
| FALSE, |
| ENET_UNIT_WAN, |
| 0, /* phy Base */ |
| ATHR_PHY5_ADDR, |
| ATHR_LAN_PORT_VLAN |
| }, |
| |
| }; |
| |
| #define ATHR_IS_ENET_PORT(phyUnit) (athrPhyInfo[phyUnit].isEnetPort) |
| #define ATHR_IS_PHY_ALIVE(phyUnit) (athrPhyInfo[phyUnit].isPhyAlive) |
| #define ATHR_ETHUNIT(phyUnit) (athrPhyInfo[phyUnit].ethUnit) |
| #define ATHR_PHYBASE(phyUnit) (athrPhyInfo[phyUnit].phyBase) |
| #define ATHR_PHYADDR(phyUnit) (athrPhyInfo[phyUnit].phyAddr) |
| #define ATHR_VLAN_TABLE_SETTING(phyUnit) (athrPhyInfo[phyUnit].VLANTableSetting) |
| |
| #define ATHR_IS_ETHUNIT(phyUnit, ethUnit) \ |
| (ATHR_IS_ENET_PORT(phyUnit) && \ |
| ATHR_ETHUNIT(phyUnit) == (ethUnit)) |
| |
| #define ATHR_IS_WAN_PORT(phyUnit) (!(ATHR_ETHUNIT(phyUnit)==ENET_UNIT_LAN)) |
| |
| /* Forward references */ |
| BOOL athr_phy_is_link_alive(int phyUnit); |
| |
| void athr_enable_linkIntrs(int ethUnit) |
| { |
| return; |
| } |
| |
| void athr_disable_linkIntrs(int ethUnit) |
| { |
| return; |
| } |
| void athr_auto_neg(int ethUnit,int phyUnit) |
| { |
| int timeout = 0; |
| uint16_t phyHwStatus; |
| int phyBase = 0,phyAddr =0; |
| |
| phyUnit = 0; |
| phyBase = ATHR_PHYBASE(phyUnit); |
| phyAddr = ATHR_PHYADDR(phyUnit); |
| |
| if(!is_emu()) { |
| phy_reg_write(ethUnit, phyUnit , ATHR_PHY_CONTROL, ATHR_CTRL_AUTONEGOTIATION_ENABLE | ATHR_CTRL_SOFTWARE_RESET); |
| |
| printf("ATHR_AUTONEG_ADVERT:%X\n",phy_reg_read(phyBase, phyAddr,ATHR_AUTONEG_ADVERT)); |
| printf("ATHR_1000BASET_CONTROL:%X\n",phy_reg_read(phyBase, phyAddr,ATHR_1000BASET_CONTROL)); |
| printf("ATHR_PHY_CONTROL:%X\n",phy_reg_read(phyBase, phyAddr,ATHR_PHY_CONTROL)); |
| } |
| else { |
| phy_reg_write(phyBase, phyAddr, ATHR_AUTONEG_ADVERT, ATHR_ADVERTISE_ALL); |
| /* Do not advertise 1000 */ |
| phy_reg_write(phyBase, phyAddr, ATHR_1000BASET_CONTROL,0x0); |
| phy_reg_write(phyBase, phyAddr, ATHR_PHY_CONTROL, ATHR_CTRL_AUTONEGOTIATION_ENABLE | ATHR_CTRL_SOFTWARE_RESET); |
| } |
| |
| /* |
| * Wait up to 3 seconds for ALL associated PHYs to finish |
| * autonegotiation. The only way we get out of here sooner is |
| * if ALL PHYs are connected AND finish autonegotiation. |
| */ |
| timeout=20; |
| for (;;) { |
| phyHwStatus = phy_reg_read(phyBase, phyAddr, ATHR_PHY_CONTROL); |
| |
| if (ATHR_RESET_DONE(phyHwStatus)) { |
| printf(MODULE_NAME": Port %d, Neg Success\n", phyUnit); |
| break; |
| } |
| if (timeout == 0) { |
| printf(MODULE_NAME": Port %d, Negogiation timeout\n", phyUnit); |
| break; |
| } |
| if (--timeout == 0) { |
| printf(MODULE_NAME": Port %d, Negogiation timeout\n", phyUnit); |
| break; |
| } |
| |
| mdelay(150); |
| } |
| |
| printf(MODULE_NAME": unit %d phy addr %x ", phyBase, phyAddr); |
| } |
| |
| /****************************************************************************** |
| * |
| * athr_phy_is_link_alive - test to see if the specified link is alive |
| * |
| * RETURNS: |
| * TRUE --> link is alive |
| * FALSE --> link is down |
| */ |
| BOOL |
| athr_phy_is_link_alive(int phyUnit) |
| { |
| uint16_t phyHwStatus; |
| uint32_t phyBase; |
| uint32_t phyAddr; |
| |
| phyBase = ATHR_PHYBASE(phyUnit); |
| phyAddr = ATHR_PHYADDR(phyUnit); |
| |
| phyHwStatus = phy_reg_read(phyBase, phyAddr, ATHR_PHY_SPEC_STATUS); |
| |
| if (phyHwStatus & ATHR_STATUS_LINK_PASS) { |
| return TRUE; |
| } |
| |
| return FALSE; |
| } |
| |
| /****************************************************************************** |
| * |
| * athr_phy_setup - reset and setup the PHY associated with |
| * the specified MAC unit number. |
| * |
| * Resets the associated PHY port. |
| * |
| * RETURNS: |
| * TRUE --> associated PHY is alive |
| * FALSE --> no LINKs on this ethernet unit |
| */ |
| |
| BOOL |
| athr_phy_setup(int ethUnit) |
| { |
| int phyUnit = 0; |
| int liveLinks = 0; |
| |
| athr_auto_neg(ethUnit,phyUnit); |
| |
| if (athr_phy_is_link_alive(phyUnit)) { |
| liveLinks++; |
| ATHR_IS_PHY_ALIVE(phyUnit) = TRUE; |
| } else { |
| ATHR_IS_PHY_ALIVE(phyUnit) = FALSE; |
| } |
| return (liveLinks > 0); |
| } |
| |
| /****************************************************************************** |
| * |
| * athr_phy_is_fdx - Determines whether the phy ports associated with the |
| * specified device are FULL or HALF duplex. |
| * |
| * RETURNS: |
| * 1 --> FULL |
| * 0 --> HALF |
| */ |
| int |
| athr_phy_is_fdx(int ethUnit,int phyUnit) |
| { |
| uint32_t phyBase; |
| uint32_t phyAddr; |
| uint16_t phyHwStatus; |
| int ii = 200; |
| |
| phyUnit = 0; |
| |
| if (athr_phy_is_link_alive(phyUnit)) { |
| |
| phyBase = ATHR_PHYBASE(phyUnit); |
| phyAddr = ATHR_PHYADDR(phyUnit); |
| |
| do { |
| phyHwStatus = phy_reg_read(phyBase, phyAddr,ATHR_PHY_SPEC_STATUS); |
| mdelay(10); |
| } while((!(phyHwStatus & ATHR_STATUS_RESOVLED)) && --ii); |
| |
| if (phyHwStatus & ATHER_STATUS_FULL_DUPLEX) { |
| return TRUE; |
| } |
| } |
| return FALSE; |
| } |
| |
| /****************************************************************************** |
| * |
| * athr_phy_speed - Determines the speed of phy ports associated with the |
| * specified device. |
| * |
| * RETURNS: |
| * AG7240_PHY_SPEED_10T, AG7240_PHY_SPEED_100T; |
| * AG7240_PHY_SPEED_1000T; |
| */ |
| |
| int |
| athr_phy_speed(int ethUnit,int phyUnit) |
| { |
| uint16_t phyHwStatus; |
| uint32_t phyBase; |
| uint32_t phyAddr; |
| int ii = 200; |
| |
| |
| phyUnit = 0; |
| if (athr_phy_is_link_alive(phyUnit)) { |
| |
| phyBase = ATHR_PHYBASE(phyUnit); |
| phyAddr = ATHR_PHYADDR(phyUnit); |
| do { |
| phyHwStatus = phy_reg_read(phyBase, phyAddr,ATHR_PHY_SPEC_STATUS); |
| mdelay(10); |
| } while((!(phyHwStatus & ATHR_STATUS_RESOVLED)) && --ii); |
| |
| phyHwStatus = ((phyHwStatus & ATHER_STATUS_LINK_MASK) >> |
| ATHER_STATUS_LINK_SHIFT); |
| |
| switch(phyHwStatus) { |
| case 0: |
| return _10BASET; |
| case 1: |
| return _100BASET; |
| case 2: |
| return _1000BASET; |
| default: |
| printf("Unkown speed read!!!!\n"); |
| } |
| } |
| |
| //printf("athr_phy_speed: link down, returning 10t\n"); |
| return _10BASET; |
| } |
| |
| /***************************************************************************** |
| * |
| * athr_phy_is_up -- checks for significant changes in PHY state. |
| * |
| * A "significant change" is: |
| * dropped link (e.g. ethernet cable unplugged) OR |
| * autonegotiation completed + link (e.g. ethernet cable plugged in) |
| * |
| * When a PHY is plugged in, phyLinkGained is called. |
| * When a PHY is unplugged, phyLinkLost is called. |
| */ |
| |
| int |
| athr_phy_is_up(int ethUnit) |
| { |
| int phyUnit; |
| uint16_t phyHwStatus, phyHwControl; |
| athrPhyInfo_t *lastStatus; |
| int linkCount = 0; |
| int lostLinks = 0; |
| int gainedLinks = 0; |
| uint32_t phyBase; |
| uint32_t phyAddr; |
| |
| for (phyUnit= 0; phyUnit < 1; phyUnit++) { |
| |
| phyBase = ATHR_PHYBASE(phyUnit); |
| phyAddr = ATHR_PHYADDR(phyUnit); |
| |
| lastStatus = &athrPhyInfo[phyUnit]; |
| |
| if (lastStatus->isPhyAlive) { /* last known link status was ALIVE */ |
| |
| phyHwStatus = phy_reg_read(phyBase, ATHR_PHYADDR(phyUnit),ATHR_PHY_SPEC_STATUS); |
| |
| /* See if we've lost link */ |
| if (phyHwStatus & ATHR_STATUS_LINK_PASS) { /* check realtime link */ |
| linkCount++; |
| } else { |
| phyHwStatus = phy_reg_read(phyBase, ATHR_PHYADDR(phyUnit),ATHR_PHY_STATUS); |
| /* If realtime failed check link in latch register before |
| * asserting link down. |
| */ |
| if (phyHwStatus & ATHR_LATCH_LINK_PASS) |
| linkCount++; |
| else |
| lostLinks++; |
| lastStatus->isPhyAlive = FALSE; |
| } |
| } else { /* last known link status was DEAD */ |
| |
| /* Check for reset complete */ |
| |
| phyHwStatus = phy_reg_read(phyBase, ATHR_PHYADDR(phyUnit),ATHR_PHY_STATUS); |
| |
| if (!ATHR_RESET_DONE(phyHwStatus)) |
| continue; |
| |
| phyHwControl = phy_reg_read(phyBase, ATHR_PHYADDR(phyUnit),ATHR_PHY_CONTROL); |
| |
| /* Check for AutoNegotiation complete */ |
| |
| if ((!(phyHwControl & ATHR_CTRL_AUTONEGOTIATION_ENABLE)) |
| || ATHR_AUTONEG_DONE(phyHwStatus)) { |
| phyHwStatus = phy_reg_read(phyBase, ATHR_PHYADDR(phyUnit),ATHR_PHY_SPEC_STATUS); |
| |
| if (phyHwStatus & ATHR_STATUS_LINK_PASS) { |
| gainedLinks++; |
| linkCount++; |
| lastStatus->isPhyAlive = TRUE; |
| } |
| } |
| } |
| } |
| return (linkCount); |
| |
| } |
| /* Place holders */ |
| |
| int |
| athr_reg_init(void *arg) |
| { |
| /* Feed 50 Mhz internal clk */ |
| ar7240_reg_wr(AR7242_ETH_XMII_CONFIG,0x0); |
| printf("F2 phy:%s\n",__func__); |
| return 0; |
| } |
