diff options
Diffstat (limited to 'drivers/net/chelsio/pm3393.c')
| -rw-r--r-- | drivers/net/chelsio/pm3393.c | 826 |
1 files changed, 826 insertions, 0 deletions
diff --git a/drivers/net/chelsio/pm3393.c b/drivers/net/chelsio/pm3393.c new file mode 100644 index 00000000000..04a1404fc65 --- /dev/null +++ b/drivers/net/chelsio/pm3393.c @@ -0,0 +1,826 @@ +/***************************************************************************** + * * + * File: pm3393.c * + * $Revision: 1.16 $ * + * $Date: 2005/05/14 00:59:32 $ * + * Description: * + * PMC/SIERRA (pm3393) MAC-PHY functionality. * + * part of the Chelsio 10Gb Ethernet Driver. * + * * + * 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. * + * * + * You should have received a copy of the GNU General Public License along * + * with this program; if not, write to the Free Software Foundation, Inc., * + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * + * * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED * + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF * + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. * + * * + * http://www.chelsio.com * + * * + * Copyright (c) 2003 - 2005 Chelsio Communications, Inc. * + * All rights reserved. * + * * + * Maintainers: maintainers@chelsio.com * + * * + * Authors: Dimitrios Michailidis <dm@chelsio.com> * + * Tina Yang <tainay@chelsio.com> * + * Felix Marti <felix@chelsio.com> * + * Scott Bardone <sbardone@chelsio.com> * + * Kurt Ottaway <kottaway@chelsio.com> * + * Frank DiMambro <frank@chelsio.com> * + * * + * History: * + * * + ****************************************************************************/ + +#include "common.h" +#include "regs.h" +#include "gmac.h" +#include "elmer0.h" +#include "suni1x10gexp_regs.h" + +/* 802.3ae 10Gb/s MDIO Manageable Device(MMD) + */ +enum { + MMD_RESERVED, + MMD_PMAPMD, + MMD_WIS, + MMD_PCS, + MMD_PHY_XGXS, /* XGMII Extender Sublayer */ + MMD_DTE_XGXS, +}; + +enum { + PHY_XGXS_CTRL_1, + PHY_XGXS_STATUS_1 +}; + +#define OFFSET(REG_ADDR) (REG_ADDR << 2) + +/* Max frame size PM3393 can handle. Includes Ethernet header and CRC. */ +#define MAX_FRAME_SIZE 9600 + +#define IPG 12 +#define TXXG_CONF1_VAL ((IPG << SUNI1x10GEXP_BITOFF_TXXG_IPGT) | \ + SUNI1x10GEXP_BITMSK_TXXG_32BIT_ALIGN | SUNI1x10GEXP_BITMSK_TXXG_CRCEN | \ + SUNI1x10GEXP_BITMSK_TXXG_PADEN) +#define RXXG_CONF1_VAL (SUNI1x10GEXP_BITMSK_RXXG_PUREP | 0x14 | \ + SUNI1x10GEXP_BITMSK_RXXG_FLCHK | SUNI1x10GEXP_BITMSK_RXXG_CRC_STRIP) + +/* Update statistics every 15 minutes */ +#define STATS_TICK_SECS (15 * 60) + +enum { /* RMON registers */ + RxOctetsReceivedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_1_LOW, + RxUnicastFramesReceivedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_4_LOW, + RxMulticastFramesReceivedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_5_LOW, + RxBroadcastFramesReceivedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_6_LOW, + RxPAUSEMACCtrlFramesReceived = SUNI1x10GEXP_REG_MSTAT_COUNTER_8_LOW, + RxFrameCheckSequenceErrors = SUNI1x10GEXP_REG_MSTAT_COUNTER_10_LOW, + RxFramesLostDueToInternalMACErrors = SUNI1x10GEXP_REG_MSTAT_COUNTER_11_LOW, + RxSymbolErrors = SUNI1x10GEXP_REG_MSTAT_COUNTER_12_LOW, + RxInRangeLengthErrors = SUNI1x10GEXP_REG_MSTAT_COUNTER_13_LOW, + RxFramesTooLongErrors = SUNI1x10GEXP_REG_MSTAT_COUNTER_15_LOW, + RxJabbers = SUNI1x10GEXP_REG_MSTAT_COUNTER_16_LOW, + RxFragments = SUNI1x10GEXP_REG_MSTAT_COUNTER_17_LOW, + RxUndersizedFrames = SUNI1x10GEXP_REG_MSTAT_COUNTER_18_LOW, + + TxOctetsTransmittedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_33_LOW, + TxFramesLostDueToInternalMACTransmissionError = SUNI1x10GEXP_REG_MSTAT_COUNTER_35_LOW, + TxTransmitSystemError = SUNI1x10GEXP_REG_MSTAT_COUNTER_36_LOW, + TxUnicastFramesTransmittedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_38_LOW, + TxMulticastFramesTransmittedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_40_LOW, + TxBroadcastFramesTransmittedOK = SUNI1x10GEXP_REG_MSTAT_COUNTER_42_LOW, + TxPAUSEMACCtrlFramesTransmitted = SUNI1x10GEXP_REG_MSTAT_COUNTER_43_LOW +}; + +struct _cmac_instance { + u8 enabled; + u8 fc; + u8 mac_addr[6]; +}; + +static int pmread(struct cmac *cmac, u32 reg, u32 * data32) +{ + t1_tpi_read(cmac->adapter, OFFSET(reg), data32); + return 0; +} + +static int pmwrite(struct cmac *cmac, u32 reg, u32 data32) +{ + t1_tpi_write(cmac->adapter, OFFSET(reg), data32); + return 0; +} + +/* Port reset. */ +static int pm3393_reset(struct cmac *cmac) +{ + return 0; +} + +/* + * Enable interrupts for the PM3393 + + 1. Enable PM3393 BLOCK interrupts. + 2. Enable PM3393 Master Interrupt bit(INTE) + 3. Enable ELMER's PM3393 bit. + 4. Enable Terminator external interrupt. +*/ +static int pm3393_interrupt_enable(struct cmac *cmac) +{ + u32 pl_intr; + + /* PM3393 - Enabling all hardware block interrupts. + */ + pmwrite(cmac, SUNI1x10GEXP_REG_SERDES_3125_INTERRUPT_ENABLE, 0xffff); + pmwrite(cmac, SUNI1x10GEXP_REG_XRF_INTERRUPT_ENABLE, 0xffff); + pmwrite(cmac, SUNI1x10GEXP_REG_XRF_DIAG_INTERRUPT_ENABLE, 0xffff); + pmwrite(cmac, SUNI1x10GEXP_REG_RXOAM_INTERRUPT_ENABLE, 0xffff); + + /* Don't interrupt on statistics overflow, we are polling */ + pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_INTERRUPT_MASK_0, 0); + pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_INTERRUPT_MASK_1, 0); + pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_INTERRUPT_MASK_2, 0); + pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_INTERRUPT_MASK_3, 0); + + pmwrite(cmac, SUNI1x10GEXP_REG_IFLX_FIFO_OVERFLOW_ENABLE, 0xffff); + pmwrite(cmac, SUNI1x10GEXP_REG_PL4ODP_INTERRUPT_MASK, 0xffff); + pmwrite(cmac, SUNI1x10GEXP_REG_XTEF_INTERRUPT_ENABLE, 0xffff); + pmwrite(cmac, SUNI1x10GEXP_REG_TXOAM_INTERRUPT_ENABLE, 0xffff); + pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_CONFIG_3, 0xffff); + pmwrite(cmac, SUNI1x10GEXP_REG_PL4IO_LOCK_DETECT_MASK, 0xffff); + pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_CONFIG_3, 0xffff); + pmwrite(cmac, SUNI1x10GEXP_REG_PL4IDU_INTERRUPT_MASK, 0xffff); + pmwrite(cmac, SUNI1x10GEXP_REG_EFLX_FIFO_OVERFLOW_ERROR_ENABLE, 0xffff); + + /* PM3393 - Global interrupt enable + */ + /* TBD XXX Disable for now until we figure out why error interrupts keep asserting. */ + pmwrite(cmac, SUNI1x10GEXP_REG_GLOBAL_INTERRUPT_ENABLE, + 0 /*SUNI1x10GEXP_BITMSK_TOP_INTE */ ); + + /* TERMINATOR - PL_INTERUPTS_EXT */ + pl_intr = readl(cmac->adapter->regs + A_PL_ENABLE); + pl_intr |= F_PL_INTR_EXT; + writel(pl_intr, cmac->adapter->regs + A_PL_ENABLE); + return 0; +} + +static int pm3393_interrupt_disable(struct cmac *cmac) +{ + u32 elmer; + + /* PM3393 - Enabling HW interrupt blocks. */ + pmwrite(cmac, SUNI1x10GEXP_REG_SERDES_3125_INTERRUPT_ENABLE, 0); + pmwrite(cmac, SUNI1x10GEXP_REG_XRF_INTERRUPT_ENABLE, 0); + pmwrite(cmac, SUNI1x10GEXP_REG_XRF_DIAG_INTERRUPT_ENABLE, 0); + pmwrite(cmac, SUNI1x10GEXP_REG_RXOAM_INTERRUPT_ENABLE, 0); + pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_INTERRUPT_MASK_0, 0); + pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_INTERRUPT_MASK_1, 0); + pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_INTERRUPT_MASK_2, 0); + pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_INTERRUPT_MASK_3, 0); + pmwrite(cmac, SUNI1x10GEXP_REG_IFLX_FIFO_OVERFLOW_ENABLE, 0); + pmwrite(cmac, SUNI1x10GEXP_REG_PL4ODP_INTERRUPT_MASK, 0); + pmwrite(cmac, SUNI1x10GEXP_REG_XTEF_INTERRUPT_ENABLE, 0); + pmwrite(cmac, SUNI1x10GEXP_REG_TXOAM_INTERRUPT_ENABLE, 0); + pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_CONFIG_3, 0); + pmwrite(cmac, SUNI1x10GEXP_REG_PL4IO_LOCK_DETECT_MASK, 0); + pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_CONFIG_3, 0); + pmwrite(cmac, SUNI1x10GEXP_REG_PL4IDU_INTERRUPT_MASK, 0); + pmwrite(cmac, SUNI1x10GEXP_REG_EFLX_FIFO_OVERFLOW_ERROR_ENABLE, 0); + + /* PM3393 - Global interrupt enable */ + pmwrite(cmac, SUNI1x10GEXP_REG_GLOBAL_INTERRUPT_ENABLE, 0); + + /* ELMER - External chip interrupts. */ + t1_tpi_read(cmac->adapter, A_ELMER0_INT_ENABLE, &elmer); + elmer &= ~ELMER0_GP_BIT1; + t1_tpi_write(cmac->adapter, A_ELMER0_INT_ENABLE, elmer); + + /* TERMINATOR - PL_INTERUPTS_EXT */ + /* DO NOT DISABLE TERMINATOR's EXTERNAL INTERRUPTS. ANOTHER CHIP + * COULD WANT THEM ENABLED. We disable PM3393 at the ELMER level. + */ + + return 0; +} + +static int pm3393_interrupt_clear(struct cmac *cmac) +{ + u32 elmer; + u32 pl_intr; + u32 val32; + + /* PM3393 - Clearing HW interrupt blocks. Note, this assumes + * bit WCIMODE=0 for a clear-on-read. + */ + pmread(cmac, SUNI1x10GEXP_REG_SERDES_3125_INTERRUPT_STATUS, &val32); + pmread(cmac, SUNI1x10GEXP_REG_XRF_INTERRUPT_STATUS, &val32); + pmread(cmac, SUNI1x10GEXP_REG_XRF_DIAG_INTERRUPT_STATUS, &val32); + pmread(cmac, SUNI1x10GEXP_REG_RXOAM_INTERRUPT_STATUS, &val32); + pmread(cmac, SUNI1x10GEXP_REG_PL4ODP_INTERRUPT, &val32); + pmread(cmac, SUNI1x10GEXP_REG_XTEF_INTERRUPT_STATUS, &val32); + pmread(cmac, SUNI1x10GEXP_REG_IFLX_FIFO_OVERFLOW_INTERRUPT, &val32); + pmread(cmac, SUNI1x10GEXP_REG_TXOAM_INTERRUPT_STATUS, &val32); + pmread(cmac, SUNI1x10GEXP_REG_RXXG_INTERRUPT, &val32); + pmread(cmac, SUNI1x10GEXP_REG_TXXG_INTERRUPT, &val32); + pmread(cmac, SUNI1x10GEXP_REG_PL4IDU_INTERRUPT, &val32); + pmread(cmac, SUNI1x10GEXP_REG_EFLX_FIFO_OVERFLOW_ERROR_INDICATION, + &val32); + pmread(cmac, SUNI1x10GEXP_REG_PL4IO_LOCK_DETECT_STATUS, &val32); + pmread(cmac, SUNI1x10GEXP_REG_PL4IO_LOCK_DETECT_CHANGE, &val32); + + /* PM3393 - Global interrupt status + */ + pmread(cmac, SUNI1x10GEXP_REG_MASTER_INTERRUPT_STATUS, &val32); + + /* ELMER - External chip interrupts. + */ + t1_tpi_read(cmac->adapter, A_ELMER0_INT_CAUSE, &elmer); + elmer |= ELMER0_GP_BIT1; + t1_tpi_write(cmac->adapter, A_ELMER0_INT_CAUSE, elmer); + + /* TERMINATOR - PL_INTERUPTS_EXT + */ + pl_intr = readl(cmac->adapter->regs + A_PL_CAUSE); + pl_intr |= F_PL_INTR_EXT; + writel(pl_intr, cmac->adapter->regs + A_PL_CAUSE); + + return 0; +} + +/* Interrupt handler */ +static int pm3393_interrupt_handler(struct cmac *cmac) +{ + u32 master_intr_status; +/* + 1. Read master interrupt register. + 2. Read BLOCK's interrupt status registers. + 3. Handle BLOCK interrupts. +*/ + /* Read the master interrupt status register. */ + pmread(cmac, SUNI1x10GEXP_REG_MASTER_INTERRUPT_STATUS, + &master_intr_status); + + /* TBD XXX Lets just clear everything for now */ + pm3393_interrupt_clear(cmac); + + return 0; +} + +static int pm3393_enable(struct cmac *cmac, int which) +{ + if (which & MAC_DIRECTION_RX) + pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_CONFIG_1, + (RXXG_CONF1_VAL | SUNI1x10GEXP_BITMSK_RXXG_RXEN)); + + if (which & MAC_DIRECTION_TX) { + u32 val = TXXG_CONF1_VAL | SUNI1x10GEXP_BITMSK_TXXG_TXEN0; + + if (cmac->instance->fc & PAUSE_RX) + val |= SUNI1x10GEXP_BITMSK_TXXG_FCRX; + if (cmac->instance->fc & PAUSE_TX) + val |= SUNI1x10GEXP_BITMSK_TXXG_FCTX; + pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_CONFIG_1, val); + } + + cmac->instance->enabled |= which; + return 0; +} + +static int pm3393_enable_port(struct cmac *cmac, int which) +{ + /* Clear port statistics */ + pmwrite(cmac, SUNI1x10GEXP_REG_MSTAT_CONTROL, + SUNI1x10GEXP_BITMSK_MSTAT_CLEAR); + udelay(2); + memset(&cmac->stats, 0, sizeof(struct cmac_statistics)); + + pm3393_enable(cmac, which); + + /* + * XXX This should be done by the PHY and preferrably not at all. + * The PHY doesn't give us link status indication on its own so have + * the link management code query it instead. + */ + { + extern void link_changed(adapter_t *adapter, int port_id); + + link_changed(cmac->adapter, 0); + } + return 0; +} + +static int pm3393_disable(struct cmac *cmac, int which) +{ + if (which & MAC_DIRECTION_RX) + pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_CONFIG_1, RXXG_CONF1_VAL); + if (which & MAC_DIRECTION_TX) + pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_CONFIG_1, TXXG_CONF1_VAL); + + /* + * The disable is graceful. Give the PM3393 time. Can't wait very + * long here, we may be holding locks. + */ + udelay(20); + + cmac->instance->enabled &= ~which; + return 0; +} + +static int pm3393_loopback_enable(struct cmac *cmac) +{ + return 0; +} + +static int pm3393_loopback_disable(struct cmac *cmac) +{ + return 0; +} + +static int pm3393_set_mtu(struct cmac *cmac, int mtu) +{ + int enabled = cmac->instance->enabled; + + /* MAX_FRAME_SIZE includes header + FCS, mtu doesn't */ + mtu += 14 + 4; + if (mtu > MAX_FRAME_SIZE) + return -EINVAL; + + /* Disable Rx/Tx MAC before configuring it. */ + if (enabled) + pm3393_disable(cmac, MAC_DIRECTION_RX | MAC_DIRECTION_TX); + + pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MAX_FRAME_LENGTH, mtu); + pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_MAX_FRAME_SIZE, mtu); + + if (enabled) + pm3393_enable(cmac, enabled); + return 0; +} + +static u32 calc_crc(u8 *b, int len) +{ + int i; + u32 crc = (u32)~0; + + /* calculate crc one bit at a time */ + while (len--) { + crc ^= *b++; + for (i = 0; i < 8; i++) { + if (crc & 0x1) + crc = (crc >> 1) ^ 0xedb88320; + else + crc = (crc >> 1); + } + } + + /* reverse bits */ + crc = ((crc >> 4) & 0x0f0f0f0f) | ((crc << 4) & 0xf0f0f0f0); + crc = ((crc >> 2) & 0x33333333) | ((crc << 2) & 0xcccccccc); + crc = ((crc >> 1) & 0x55555555) | ((crc << 1) & 0xaaaaaaaa); + /* swap bytes */ + crc = (crc >> 16) | (crc << 16); + crc = (crc >> 8 & 0x00ff00ff) | (crc << 8 & 0xff00ff00); + + return crc; +} + +static int pm3393_set_rx_mode(struct cmac *cmac, struct t1_rx_mode *rm) +{ + int enabled = cmac->instance->enabled & MAC_DIRECTION_RX; + u32 rx_mode; + + /* Disable MAC RX before reconfiguring it */ + if (enabled) + pm3393_disable(cmac, MAC_DIRECTION_RX); + + pmread(cmac, SUNI1x10GEXP_REG_RXXG_ADDRESS_FILTER_CONTROL_2, &rx_mode); + rx_mode &= ~(SUNI1x10GEXP_BITMSK_RXXG_PMODE | + SUNI1x10GEXP_BITMSK_RXXG_MHASH_EN); + pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_ADDRESS_FILTER_CONTROL_2, + (u16)rx_mode); + + if (t1_rx_mode_promisc(rm)) { + /* Promiscuous mode. */ + rx_mode |= SUNI1x10GEXP_BITMSK_RXXG_PMODE; + } + if (t1_rx_mode_allmulti(rm)) { + /* Accept all multicast. */ + pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MULTICAST_HASH_LOW, 0xffff); + pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MULTICAST_HASH_MIDLOW, 0xffff); + pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MULTICAST_HASH_MIDHIGH, 0xffff); + pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MULTICAST_HASH_HIGH, 0xffff); + rx_mode |= SUNI1x10GEXP_BITMSK_RXXG_MHASH_EN; + } else if (t1_rx_mode_mc_cnt(rm)) { + /* Accept one or more multicast(s). */ + u8 *addr; + int bit; + u16 mc_filter[4] = { 0, }; + + while ((addr = t1_get_next_mcaddr(rm))) { + bit = (calc_crc(addr, ETH_ALEN) >> 23) & 0x3f; /* bit[23:28] */ + mc_filter[bit >> 4] |= 1 << (bit & 0xf); + } + pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MULTICAST_HASH_LOW, mc_filter[0]); + pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MULTICAST_HASH_MIDLOW, mc_filter[1]); + pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MULTICAST_HASH_MIDHIGH, mc_filter[2]); + pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_MULTICAST_HASH_HIGH, mc_filter[3]); + rx_mode |= SUNI1x10GEXP_BITMSK_RXXG_MHASH_EN; + } + + pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_ADDRESS_FILTER_CONTROL_2, (u16)rx_mode); + + if (enabled) + pm3393_enable(cmac, MAC_DIRECTION_RX); + + return 0; +} + +static int pm3393_get_speed_duplex_fc(struct cmac *cmac, int *speed, + int *duplex, int *fc) +{ + if (speed) + *speed = SPEED_10000; + if (duplex) + *duplex = DUPLEX_FULL; + if (fc) + *fc = cmac->instance->fc; + return 0; +} + +static int pm3393_set_speed_duplex_fc(struct cmac *cmac, int speed, int duplex, + int fc) +{ + if (speed >= 0 && speed != SPEED_10000) + return -1; + if (duplex >= 0 && duplex != DUPLEX_FULL) + return -1; + if (fc & ~(PAUSE_TX | PAUSE_RX)) + return -1; + + if (fc != cmac->instance->fc) { + cmac->instance->fc = (u8) fc; + if (cmac->instance->enabled & MAC_DIRECTION_TX) + pm3393_enable(cmac, MAC_DIRECTION_TX); + } + return 0; +} + +#define RMON_UPDATE(mac, name, stat_name) \ + { \ + t1_tpi_read((mac)->adapter, OFFSET(name), &val0); \ + t1_tpi_read((mac)->adapter, OFFSET(((name)+1)), &val1); \ + t1_tpi_read((mac)->adapter, OFFSET(((name)+2)), &val2); \ + (mac)->stats.stat_name = ((u64)val0 & 0xffff) | \ + (((u64)val1 & 0xffff) << 16) | \ + (((u64)val2 & 0xff) << 32) | \ + ((mac)->stats.stat_name & \ + (~(u64)0 << 40)); \ + if (ro & \ + ((name - SUNI1x10GEXP_REG_MSTAT_COUNTER_0_LOW) >> 2)) \ + (mac)->stats.stat_name += ((u64)1 << 40); \ + } + +static const struct cmac_statistics *pm3393_update_statistics(struct cmac *mac, + int flag) +{ + u64 ro; + u32 val0, val1, val2, val3; + + /* Snap the counters */ + pmwrite(mac, SUNI1x10GEXP_REG_MSTAT_CONTROL, + SUNI1x10GEXP_BITMSK_MSTAT_SNAP); + + /* Counter rollover, clear on read */ + pmread(mac, SUNI1x10GEXP_REG_MSTAT_COUNTER_ROLLOVER_0, &val0); + pmread(mac, SUNI1x10GEXP_REG_MSTAT_COUNTER_ROLLOVER_1, &val1); + pmread(mac, SUNI1x10GEXP_REG_MSTAT_COUNTER_ROLLOVER_2, &val2); + pmread(mac, SUNI1x10GEXP_REG_MSTAT_COUNTER_ROLLOVER_3, &val3); + ro = ((u64)val0 & 0xffff) | (((u64)val1 & 0xffff) << 16) | + (((u64)val2 & 0xffff) << 32) | (((u64)val3 & 0xffff) << 48); + + /* Rx stats */ + RMON_UPDATE(mac, RxOctetsReceivedOK, RxOctetsOK); + RMON_UPDATE(mac, RxUnicastFramesReceivedOK, RxUnicastFramesOK); + RMON_UPDATE(mac, RxMulticastFramesReceivedOK, RxMulticastFramesOK); + RMON_UPDATE(mac, RxBroadcastFramesReceivedOK, RxBroadcastFramesOK); + RMON_UPDATE(mac, RxPAUSEMACCtrlFramesReceived, RxPauseFrames); + RMON_UPDATE(mac, RxFrameCheckSequenceErrors, RxFCSErrors); + RMON_UPDATE(mac, RxFramesLostDueToInternalMACErrors, + RxInternalMACRcvError); + RMON_UPDATE(mac, RxSymbolErrors, RxSymbolErrors); + RMON_UPDATE(mac, RxInRangeLengthErrors, RxInRangeLengthErrors); + RMON_UPDATE(mac, RxFramesTooLongErrors , RxFrameTooLongErrors); + RMON_UPDATE(mac, RxJabbers, RxJabberErrors); + RMON_UPDATE(mac, RxFragments, RxRuntErrors); + RMON_UPDATE(mac, RxUndersizedFrames, RxRuntErrors); + + /* Tx stats */ + RMON_UPDATE(mac, TxOctetsTransmittedOK, TxOctetsOK); + RMON_UPDATE(mac, TxFramesLostDueToInternalMACTransmissionError, + TxInternalMACXmitError); + RMON_UPDATE(mac, TxTransmitSystemError, TxFCSErrors); + RMON_UPDATE(mac, TxUnicastFramesTransmittedOK, TxUnicastFramesOK); + RMON_UPDATE(mac, TxMulticastFramesTransmittedOK, TxMulticastFramesOK); + RMON_UPDATE(mac, TxBroadcastFramesTransmittedOK, TxBroadcastFramesOK); + RMON_UPDATE(mac, TxPAUSEMACCtrlFramesTransmitted, TxPauseFrames); + + return &mac->stats; +} + +static int pm3393_macaddress_get(struct cmac *cmac, u8 mac_addr[6]) +{ + memcpy(mac_addr, cmac->instance->mac_addr, 6); + return 0; +} + +static int pm3393_macaddress_set(struct cmac *cmac, u8 ma[6]) +{ + u32 val, lo, mid, hi, enabled = cmac->instance->enabled; + + /* + * MAC addr: 00:07:43:00:13:09 + * + * ma[5] = 0x09 + * ma[4] = 0x13 + * ma[3] = 0x00 + * ma[2] = 0x43 + * ma[1] = 0x07 + * ma[0] = 0x00 + * + * The PM3393 requires byte swapping and reverse order entry + * when programming MAC addresses: + * + * low_bits[15:0] = ma[1]:ma[0] + * mid_bits[31:16] = ma[3]:ma[2] + * high_bits[47:32] = ma[5]:ma[4] + */ + + /* Store local copy */ + memcpy(cmac->instance->mac_addr, ma, 6); + + lo = ((u32) ma[1] << 8) | (u32) ma[0]; + mid = ((u32) ma[3] << 8) | (u32) ma[2]; + hi = ((u32) ma[5] << 8) | (u32) ma[4]; + + /* Disable Rx/Tx MAC before configuring it. */ + if (enabled) + pm3393_disable(cmac, MAC_DIRECTION_RX | MAC_DIRECTION_TX); + + /* Set RXXG Station Address */ + pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_SA_15_0, lo); + pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_SA_31_16, mid); + pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_SA_47_32, hi); + + /* Set TXXG Station Address */ + pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_SA_15_0, lo); + pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_SA_31_16, mid); + pmwrite(cmac, SUNI1x10GEXP_REG_TXXG_SA_47_32, hi); + + /* Setup Exact Match Filter 1 with our MAC address + * + * Must disable exact match filter before configuring it. + */ + pmread(cmac, SUNI1x10GEXP_REG_RXXG_ADDRESS_FILTER_CONTROL_0, &val); + val &= 0xff0f; + pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_ADDRESS_FILTER_CONTROL_0, val); + + pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_EXACT_MATCH_ADDR_1_LOW, lo); + pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_EXACT_MATCH_ADDR_1_MID, mid); + pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_EXACT_MATCH_ADDR_1_HIGH, hi); + + val |= 0x0090; + pmwrite(cmac, SUNI1x10GEXP_REG_RXXG_ADDRESS_FILTER_CONTROL_0, val); + + if (enabled) + pm3393_enable(cmac, enabled); + return 0; +} + +static void pm3393_destroy(struct cmac *cmac) +{ + kfree(cmac); +} + +static struct cmac_ops pm3393_ops = { + .destroy = pm3393_destroy, + .reset = pm3393_reset, + .interrupt_enable = pm3393_interrupt_enable, + .interrupt_disable = pm3393_interrupt_disable, + .interrupt_clear = pm3393_interrupt_clear, + .interrupt_handler = pm3393_interrupt_handler, + .enable = pm3393_enable_port, + .disable = pm3393_disable, + .loopback_enable = pm3393_loopback_enable, + .loopback_disable = pm3393_loopback_disable, + .set_mtu = pm3393_set_mtu, + .set_rx_mode = pm3393_set_rx_mode, + .get_speed_duplex_fc = pm3393_get_speed_duplex_fc, + .set_speed_duplex_fc = pm3393_set_speed_duplex_fc, + .statistics_update = pm3393_update_statistics, + .macaddress_get = pm3393_macaddress_get, + .macaddress_set = pm3393_macaddress_set +}; + +static struct cmac *pm3393_mac_create(adapter_t *adapter, int index) +{ + struct cmac *cmac; + + cmac = kmalloc(sizeof(*cmac) + sizeof(cmac_instance), GFP_KERNEL); + if (!cmac) + return NULL; + memset(cmac, 0, sizeof(*cmac)); + + cmac->ops = &pm3393_ops; + cmac->instance = (cmac_instance *) (cmac + 1); + cmac->adapter = adapter; + cmac->instance->fc = PAUSE_TX | PAUSE_RX; + + t1_tpi_write(adapter, OFFSET(0x0001), 0x00008000); + t1_tpi_write(adapter, OFFSET(0x0001), 0x00000000); + t1_tpi_write(adapter, OFFSET(0x2308), 0x00009800); + t1_tpi_write(adapter, OFFSET(0x2305), 0x00001001); /* PL4IO Enable */ + t1_tpi_write(adapter, OFFSET(0x2320), 0x00008800); + t1_tpi_write(adapter, OFFSET(0x2321), 0x00008800); + t1_tpi_write(adapter, OFFSET(0x2322), 0x00008800); + t1_tpi_write(adapter, OFFSET(0x2323), 0x00008800); + t1_tpi_write(adapter, OFFSET(0x2324), 0x00008800); + t1_tpi_write(adapter, OFFSET(0x2325), 0x00008800); + t1_tpi_write(adapter, OFFSET(0x2326), 0x00008800); + t1_tpi_write(adapter, OFFSET(0x2327), 0x00008800); + t1_tpi_write(adapter, OFFSET(0x2328), 0x00008800); + t1_tpi_write(adapter, OFFSET(0x2329), 0x00008800); + t1_tpi_write(adapter, OFFSET(0x232a), 0x00008800); + t1_tpi_write(adapter, OFFSET(0x232b), 0x00008800); + t1_tpi_write(adapter, OFFSET(0x232c), 0x00008800); + t1_tpi_write(adapter, OFFSET(0x232d), 0x00008800); + t1_tpi_write(adapter, OFFSET(0x232e), 0x00008800); + t1_tpi_write(adapter, OFFSET(0x232f), 0x00008800); + t1_tpi_write(adapter, OFFSET(0x230d), 0x00009c00); + t1_tpi_write(adapter, OFFSET(0x2304), 0x00000202); /* PL4IO Calendar Repetitions */ + + t1_tpi_write(adapter, OFFSET(0x3200), 0x00008080); /* EFLX Enable */ + t1_tpi_write(adapter, OFFSET(0x3210), 0x00000000); /* EFLX Channel Deprovision */ + t1_tpi_write(adapter, OFFSET(0x3203), 0x00000000); /* EFLX Low Limit */ + t1_tpi_write(adapter, OFFSET(0x3204), 0x00000040); /* EFLX High Limit */ + t1_tpi_write(adapter, OFFSET(0x3205), 0x000002cc); /* EFLX Almost Full */ + t1_tpi_write(adapter, OFFSET(0x3206), 0x00000199); /* EFLX Almost Empty */ + t1_tpi_write(adapter, OFFSET(0x3207), 0x00000240); /* EFLX Cut Through Threshold */ + t1_tpi_write(adapter, OFFSET(0x3202), 0x00000000); /* EFLX Indirect Register Update */ + t1_tpi_write(adapter, OFFSET(0x3210), 0x00000001); /* EFLX Channel Provision */ + t1_tpi_write(adapter, OFFSET(0x3208), 0x0000ffff); /* EFLX Undocumented */ + t1_tpi_write(adapter, OFFSET(0x320a), 0x0000ffff); /* EFLX Undocumented */ + t1_tpi_write(adapter, OFFSET(0x320c), 0x0000ffff); /* EFLX enable overflow interrupt The other bit are undocumented */ + t1_tpi_write(adapter, OFFSET(0x320e), 0x0000ffff); /* EFLX Undocumented */ + + t1_tpi_write(adapter, OFFSET(0x2200), 0x0000c000); /* IFLX Configuration - enable */ + t1_tpi_write(adapter, OFFSET(0x2201), 0x00000000); /* IFLX Channel Deprovision */ + t1_tpi_write(adapter, OFFSET(0x220e), 0x00000000); /* IFLX Low Limit */ + t1_tpi_write(adapter, OFFSET(0x220f), 0x00000100); /* IFLX High Limit */ + t1_tpi_write(adapter, OFFSET(0x2210), 0x00000c00); /* IFLX Almost Full Limit */ + t1_tpi_write(adapter, OFFSET(0x2211), 0x00000599); /* IFLX Almost Empty Limit */ + t1_tpi_write(adapter, OFFSET(0x220d), 0x00000000); /* IFLX Indirect Register Update */ + t1_tpi_write(adapter, OFFSET(0x2201), 0x00000001); /* IFLX Channel Provision */ + t1_tpi_write(adapter, OFFSET(0x2203), 0x0000ffff); /* IFLX Undocumented */ + t1_tpi_write(adapter, OFFSET(0x2205), 0x0000ffff); /* IFLX Undocumented */ + t1_tpi_write(adapter, OFFSET(0x2209), 0x0000ffff); /* IFLX Enable overflow interrupt. The other bit are undocumented */ + + t1_tpi_write(adapter, OFFSET(0x2241), 0xfffffffe); /* PL4MOS Undocumented */ + t1_tpi_write(adapter, OFFSET(0x2242), 0x0000ffff); /* PL4MOS Undocumented */ + t1_tpi_write(adapter, OFFSET(0x2243), 0x00000008); /* PL4MOS Starving Burst Size */ + t1_tpi_write(adapter, OFFSET(0x2244), 0x00000008); /* PL4MOS Hungry Burst Size */ + t1_tpi_write(adapter, OFFSET(0x2245), 0x00000008); /* PL4MOS Transfer Size */ + t1_tpi_write(adapter, OFFSET(0x2240), 0x00000005); /* PL4MOS Disable */ + + t1_tpi_write(adapter, OFFSET(0x2280), 0x00002103); /* PL4ODP Training Repeat and SOP rule */ + t1_tpi_write(adapter, OFFSET(0x2284), 0x00000000); /* PL4ODP MAX_T setting */ + + t1_tpi_write(adapter, OFFSET(0x3280), 0x00000087); /* PL4IDU Enable data forward, port state machine. Set ALLOW_NON_ZERO_OLB */ + t1_tpi_write(adapter, OFFSET(0x3282), 0x0000001f); /* PL4IDU Enable Dip4 check error interrupts */ + + t1_tpi_write(adapter, OFFSET(0x3040), 0x0c32); /* # TXXG Config */ + /* For T1 use timer based Mac flow control. */ + t1_tpi_write(adapter, OFFSET(0x304d), 0x8000); + t1_tpi_write(adapter, OFFSET(0x2040), 0x059c); /* # RXXG Config */ + t1_tpi_write(adapter, OFFSET(0x2049), 0x0001); /* # RXXG Cut Through */ + t1_tpi_write(adapter, OFFSET(0x2070), 0x0000); /* # Disable promiscuous mode */ + + /* Setup Exact Match Filter 0 to allow broadcast packets. + */ + t1_tpi_write(adapter, OFFSET(0x206e), 0x0000); /* # Disable Match Enable bit */ + t1_tpi_write(adapter, OFFSET(0x204a), 0xffff); /* # low addr */ + t1_tpi_write(adapter, OFFSET(0x204b), 0xffff); /* # mid addr */ + t1_tpi_write(adapter, OFFSET(0x204c), 0xffff); /* # high addr */ + t1_tpi_write(adapter, OFFSET(0x206e), 0x0009); /* # Enable Match Enable bit */ + + t1_tpi_write(adapter, OFFSET(0x0003), 0x0000); /* # NO SOP/ PAD_EN setup */ + t1_tpi_write(adapter, OFFSET(0x0100), 0x0ff0); /* # RXEQB disabled */ + t1_tpi_write(adapter, OFFSET(0x0101), 0x0f0f); /* # No Preemphasis */ + + return cmac; +} + +static int pm3393_mac_reset(adapter_t * adapter) +{ + u32 val; + u32 x; + u32 is_pl4_reset_finished; + u32 is_pl4_outof_lock; + u32 is_xaui_mabc_pll_locked; + u32 successful_reset; + int i; + + /* The following steps are required to properly reset + * the PM3393. This information is provided in the + * PM3393 datasheet (Issue 2: November 2002) + * section 13.1 -- Device Reset. + * + * The PM3393 has three types of components that are + * individually reset: + * + * DRESETB - Digital circuitry + * PL4_ARESETB - PL4 analog circuitry + * XAUI_ARESETB - XAUI bus analog circuitry + * + * Steps to reset PM3393 using RSTB pin: + * + * 1. Assert RSTB pin low ( write 0 ) + * 2. Wait at least 1ms to initiate a complete initialization of device. + * 3. Wait until all external clocks and REFSEL are stable. + * 4. Wait minimum of 1ms. (after external clocks and REFEL are stable) + * 5. De-assert RSTB ( write 1 ) + * 6. Wait until internal timers to expires after ~14ms. + * - Allows analog clock synthesizer(PL4CSU) to stabilize to + * selected reference frequency before allowing the digital + * portion of the device to operate. + * 7. Wait at least 200us for XAUI interface to stabilize. + * 8. Verify the PM3393 came out of reset successfully. + * Set successful reset flag if everything worked else try again + * a few more times. + */ + + successful_reset = 0; + for (i = 0; i < 3 && !successful_reset; i++) { + /* 1 */ + t1_tpi_read(adapter, A_ELMER0_GPO, &val); + val &= ~1; + t1_tpi_write(adapter, A_ELMER0_GPO, val); + + /* 2 */ + msleep(1); + + /* 3 */ + msleep(1); + + /* 4 */ + msleep(2 /*1 extra ms for safety */ ); + + /* 5 */ + val |= 1; + t1_tpi_write(adapter, A_ELMER0_GPO, val); + + /* 6 */ + msleep(15 /*1 extra ms for safety */ ); + + /* 7 */ + msleep(1); + + /* 8 */ + + /* Has PL4 analog block come out of reset correctly? */ + t1_tpi_read(adapter, OFFSET(SUNI1x10GEXP_REG_DEVICE_STATUS), &val); + is_pl4_reset_finished = (val & SUNI1x10GEXP_BITMSK_TOP_EXPIRED); + + /* TBD XXX SUNI1x10GEXP_BITMSK_TOP_PL4_IS_DOOL gets locked later in the init sequence + * figure out why? */ + + /* Have all PL4 block clocks locked? */ + x = (SUNI1x10GEXP_BITMSK_TOP_PL4_ID_DOOL + /*| SUNI1x10GEXP_BITMSK_TOP_PL4_IS_DOOL */ | + SUNI1x10GEXP_BITMSK_TOP_PL4_ID_ROOL | + SUNI1x10GEXP_BITMSK_TOP_PL4_IS_ROOL | + SUNI1x10GEXP_BITMSK_TOP_PL4_OUT_ROOL); + is_pl4_outof_lock = (val & x); + + /* ??? If this fails, might be able to software reset the XAUI part + * and try to recover... thus saving us from doing another HW reset */ + /* Has the XAUI MABC PLL circuitry stablized? */ + is_xaui_mabc_pll_locked = + (val & SUNI1x10GEXP_BITMSK_TOP_SXRA_EXPIRED); + + successful_reset = (is_pl4_reset_finished && !is_pl4_outof_lock + && is_xaui_mabc_pll_locked); + } + return successful_reset ? 0 : 1; +} + +struct gmac t1_pm3393_ops = { + STATS_TICK_SECS, + pm3393_mac_create, + pm3393_mac_reset +}; |