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linux/drivers/net/wan/lmc/lmc_media.c
Jean Delvare 6473d160b4 PCI: Cleanup the includes of <linux/pci.h> 
I noticed that many source files include <linux/pci.h> while they do
not appear to need it. Here is an attempt to clean it all up.

In order to find all possibly affected files, I searched for all
files including <linux/pci.h> but without any other occurence of "pci"
or "PCI". I removed the include statement from all of these, then I
compiled an allmodconfig kernel on both i386 and x86_64 and fixed the
false positives manually.

My tests covered 66% of the affected files, so there could be false
positives remaining. Untested files are:

arch/alpha/kernel/err_common.c
arch/alpha/kernel/err_ev6.c
arch/alpha/kernel/err_ev7.c
arch/ia64/sn/kernel/huberror.c
arch/ia64/sn/kernel/xpnet.c
arch/m68knommu/kernel/dma.c
arch/mips/lib/iomap.c
arch/powerpc/platforms/pseries/ras.c
arch/ppc/8260_io/enet.c
arch/ppc/8260_io/fcc_enet.c
arch/ppc/8xx_io/enet.c
arch/ppc/syslib/ppc4xx_sgdma.c
arch/sh64/mach-cayman/iomap.c
arch/xtensa/kernel/xtensa_ksyms.c
arch/xtensa/platform-iss/setup.c
drivers/i2c/busses/i2c-at91.c
drivers/i2c/busses/i2c-mpc.c
drivers/media/video/saa711x.c
drivers/misc/hdpuftrs/hdpu_cpustate.c
drivers/misc/hdpuftrs/hdpu_nexus.c
drivers/net/au1000_eth.c
drivers/net/fec_8xx/fec_main.c
drivers/net/fec_8xx/fec_mii.c
drivers/net/fs_enet/fs_enet-main.c
drivers/net/fs_enet/mac-fcc.c
drivers/net/fs_enet/mac-fec.c
drivers/net/fs_enet/mac-scc.c
drivers/net/fs_enet/mii-bitbang.c
drivers/net/fs_enet/mii-fec.c
drivers/net/ibm_emac/ibm_emac_core.c
drivers/net/lasi_82596.c
drivers/parisc/hppb.c
drivers/sbus/sbus.c
drivers/video/g364fb.c
drivers/video/platinumfb.c
drivers/video/stifb.c
drivers/video/valkyriefb.c
include/asm-arm/arch-ixp4xx/dma.h
sound/oss/au1550_ac97.c

I would welcome test reports for these files. I am fine with removing
the untested files from the patch if the general opinion is that these
changes aren't safe. The tested part would still be nice to have.

Note that this patch depends on another header fixup patch I submitted
to LKML yesterday:
  [PATCH] scatterlist.h needs types.h
  http://lkml.org/lkml/2007/3/01/141

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Badari Pulavarty <pbadari@us.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:35 -07:00

1237 lines
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/* $Id: lmc_media.c,v 1.13 2000/04/11 05:25:26 asj Exp $ */
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/timer.h>
#include <linux/ptrace.h>
#include <linux/errno.h>
#include <linux/ioport.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/in.h>
#include <linux/if_arp.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/inet.h>
#include <linux/bitops.h>
#include <net/syncppp.h>
#include <asm/processor.h> /* Processor type for cache alignment. */
#include <asm/io.h>
#include <asm/dma.h>
#include <asm/uaccess.h>
#include "lmc.h"
#include "lmc_var.h"
#include "lmc_ioctl.h"
#include "lmc_debug.h"
#define CONFIG_LMC_IGNORE_HARDWARE_HANDSHAKE 1
/*
* Copyright (c) 1997-2000 LAN Media Corporation (LMC)
* All rights reserved. www.lanmedia.com
*
* This code is written by:
* Andrew Stanley-Jones (asj@cban.com)
* Rob Braun (bbraun@vix.com),
* Michael Graff (explorer@vix.com) and
* Matt Thomas (matt@3am-software.com).
*
* This software may be used and distributed according to the terms
* of the GNU General Public License version 2, incorporated herein by reference.
*/
/*
* protocol independent method.
*/
static void lmc_set_protocol (lmc_softc_t * const, lmc_ctl_t *);
/*
* media independent methods to check on media status, link, light LEDs,
* etc.
*/
static void lmc_ds3_init (lmc_softc_t * const);
static void lmc_ds3_default (lmc_softc_t * const);
static void lmc_ds3_set_status (lmc_softc_t * const, lmc_ctl_t *);
static void lmc_ds3_set_100ft (lmc_softc_t * const, int);
static int lmc_ds3_get_link_status (lmc_softc_t * const);
static void lmc_ds3_set_crc_length (lmc_softc_t * const, int);
static void lmc_ds3_set_scram (lmc_softc_t * const, int);
static void lmc_ds3_watchdog (lmc_softc_t * const);
static void lmc_hssi_init (lmc_softc_t * const);
static void lmc_hssi_default (lmc_softc_t * const);
static void lmc_hssi_set_status (lmc_softc_t * const, lmc_ctl_t *);
static void lmc_hssi_set_clock (lmc_softc_t * const, int);
static int lmc_hssi_get_link_status (lmc_softc_t * const);
static void lmc_hssi_set_link_status (lmc_softc_t * const, int);
static void lmc_hssi_set_crc_length (lmc_softc_t * const, int);
static void lmc_hssi_watchdog (lmc_softc_t * const);
static void lmc_ssi_init (lmc_softc_t * const);
static void lmc_ssi_default (lmc_softc_t * const);
static void lmc_ssi_set_status (lmc_softc_t * const, lmc_ctl_t *);
static void lmc_ssi_set_clock (lmc_softc_t * const, int);
static void lmc_ssi_set_speed (lmc_softc_t * const, lmc_ctl_t *);
static int lmc_ssi_get_link_status (lmc_softc_t * const);
static void lmc_ssi_set_link_status (lmc_softc_t * const, int);
static void lmc_ssi_set_crc_length (lmc_softc_t * const, int);
static void lmc_ssi_watchdog (lmc_softc_t * const);
static void lmc_t1_init (lmc_softc_t * const);
static void lmc_t1_default (lmc_softc_t * const);
static void lmc_t1_set_status (lmc_softc_t * const, lmc_ctl_t *);
static int lmc_t1_get_link_status (lmc_softc_t * const);
static void lmc_t1_set_circuit_type (lmc_softc_t * const, int);
static void lmc_t1_set_crc_length (lmc_softc_t * const, int);
static void lmc_t1_set_clock (lmc_softc_t * const, int);
static void lmc_t1_watchdog (lmc_softc_t * const);
static void lmc_dummy_set_1 (lmc_softc_t * const, int);
static void lmc_dummy_set2_1 (lmc_softc_t * const, lmc_ctl_t *);
static inline void write_av9110_bit (lmc_softc_t *, int);
static void write_av9110 (lmc_softc_t *, u_int32_t, u_int32_t, u_int32_t,
u_int32_t, u_int32_t);
lmc_media_t lmc_ds3_media = {
lmc_ds3_init, /* special media init stuff */
lmc_ds3_default, /* reset to default state */
lmc_ds3_set_status, /* reset status to state provided */
lmc_dummy_set_1, /* set clock source */
lmc_dummy_set2_1, /* set line speed */
lmc_ds3_set_100ft, /* set cable length */
lmc_ds3_set_scram, /* set scrambler */
lmc_ds3_get_link_status, /* get link status */
lmc_dummy_set_1, /* set link status */
lmc_ds3_set_crc_length, /* set CRC length */
lmc_dummy_set_1, /* set T1 or E1 circuit type */
lmc_ds3_watchdog
};
lmc_media_t lmc_hssi_media = {
lmc_hssi_init, /* special media init stuff */
lmc_hssi_default, /* reset to default state */
lmc_hssi_set_status, /* reset status to state provided */
lmc_hssi_set_clock, /* set clock source */
lmc_dummy_set2_1, /* set line speed */
lmc_dummy_set_1, /* set cable length */
lmc_dummy_set_1, /* set scrambler */
lmc_hssi_get_link_status, /* get link status */
lmc_hssi_set_link_status, /* set link status */
lmc_hssi_set_crc_length, /* set CRC length */
lmc_dummy_set_1, /* set T1 or E1 circuit type */
lmc_hssi_watchdog
};
lmc_media_t lmc_ssi_media = { lmc_ssi_init, /* special media init stuff */
lmc_ssi_default, /* reset to default state */
lmc_ssi_set_status, /* reset status to state provided */
lmc_ssi_set_clock, /* set clock source */
lmc_ssi_set_speed, /* set line speed */
lmc_dummy_set_1, /* set cable length */
lmc_dummy_set_1, /* set scrambler */
lmc_ssi_get_link_status, /* get link status */
lmc_ssi_set_link_status, /* set link status */
lmc_ssi_set_crc_length, /* set CRC length */
lmc_dummy_set_1, /* set T1 or E1 circuit type */
lmc_ssi_watchdog
};
lmc_media_t lmc_t1_media = {
lmc_t1_init, /* special media init stuff */
lmc_t1_default, /* reset to default state */
lmc_t1_set_status, /* reset status to state provided */
lmc_t1_set_clock, /* set clock source */
lmc_dummy_set2_1, /* set line speed */
lmc_dummy_set_1, /* set cable length */
lmc_dummy_set_1, /* set scrambler */
lmc_t1_get_link_status, /* get link status */
lmc_dummy_set_1, /* set link status */
lmc_t1_set_crc_length, /* set CRC length */
lmc_t1_set_circuit_type, /* set T1 or E1 circuit type */
lmc_t1_watchdog
};
static void
lmc_dummy_set_1 (lmc_softc_t * const sc, int a)
{
}
static void
lmc_dummy_set2_1 (lmc_softc_t * const sc, lmc_ctl_t * a)
{
}
/*
* HSSI methods
*/
static void
lmc_hssi_init (lmc_softc_t * const sc)
{
sc->ictl.cardtype = LMC_CTL_CARDTYPE_LMC5200;
lmc_gpio_mkoutput (sc, LMC_GEP_HSSI_CLOCK);
}
static void
lmc_hssi_default (lmc_softc_t * const sc)
{
sc->lmc_miireg16 = LMC_MII16_LED_ALL;
sc->lmc_media->set_link_status (sc, LMC_LINK_DOWN);
sc->lmc_media->set_clock_source (sc, LMC_CTL_CLOCK_SOURCE_EXT);
sc->lmc_media->set_crc_length (sc, LMC_CTL_CRC_LENGTH_16);
}
/*
* Given a user provided state, set ourselves up to match it. This will
* always reset the card if needed.
*/
static void
lmc_hssi_set_status (lmc_softc_t * const sc, lmc_ctl_t * ctl)
{
if (ctl == NULL)
{
sc->lmc_media->set_clock_source (sc, sc->ictl.clock_source);
lmc_set_protocol (sc, NULL);
return;
}
/*
* check for change in clock source
*/
if (ctl->clock_source && !sc->ictl.clock_source)
{
sc->lmc_media->set_clock_source (sc, LMC_CTL_CLOCK_SOURCE_INT);
sc->lmc_timing = LMC_CTL_CLOCK_SOURCE_INT;
}
else if (!ctl->clock_source && sc->ictl.clock_source)
{
sc->lmc_timing = LMC_CTL_CLOCK_SOURCE_EXT;
sc->lmc_media->set_clock_source (sc, LMC_CTL_CLOCK_SOURCE_EXT);
}
lmc_set_protocol (sc, ctl);
}
/*
* 1 == internal, 0 == external
*/
static void
lmc_hssi_set_clock (lmc_softc_t * const sc, int ie)
{
int old;
old = sc->ictl.clock_source;
if (ie == LMC_CTL_CLOCK_SOURCE_EXT)
{
sc->lmc_gpio |= LMC_GEP_HSSI_CLOCK;
LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_EXT;
if(old != ie)
printk (LMC_PRINTF_FMT ": clock external\n", LMC_PRINTF_ARGS);
}
else
{
sc->lmc_gpio &= ~(LMC_GEP_HSSI_CLOCK);
LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_INT;
if(old != ie)
printk (LMC_PRINTF_FMT ": clock internal\n", LMC_PRINTF_ARGS);
}
}
/*
* return hardware link status.
* 0 == link is down, 1 == link is up.
*/
static int
lmc_hssi_get_link_status (lmc_softc_t * const sc)
{
/*
* We're using the same code as SSI since
* they're practically the same
*/
return lmc_ssi_get_link_status(sc);
}
static void
lmc_hssi_set_link_status (lmc_softc_t * const sc, int state)
{
if (state == LMC_LINK_UP)
sc->lmc_miireg16 |= LMC_MII16_HSSI_TA;
else
sc->lmc_miireg16 &= ~LMC_MII16_HSSI_TA;
lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16);
}
/*
* 0 == 16bit, 1 == 32bit
*/
static void
lmc_hssi_set_crc_length (lmc_softc_t * const sc, int state)
{
if (state == LMC_CTL_CRC_LENGTH_32)
{
/* 32 bit */
sc->lmc_miireg16 |= LMC_MII16_HSSI_CRC;
sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_32;
}
else
{
/* 16 bit */
sc->lmc_miireg16 &= ~LMC_MII16_HSSI_CRC;
sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_16;
}
lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16);
}
static void
lmc_hssi_watchdog (lmc_softc_t * const sc)
{
/* HSSI is blank */
}
/*
* DS3 methods
*/
/*
* Set cable length
*/
static void
lmc_ds3_set_100ft (lmc_softc_t * const sc, int ie)
{
if (ie == LMC_CTL_CABLE_LENGTH_GT_100FT)
{
sc->lmc_miireg16 &= ~LMC_MII16_DS3_ZERO;
sc->ictl.cable_length = LMC_CTL_CABLE_LENGTH_GT_100FT;
}
else if (ie == LMC_CTL_CABLE_LENGTH_LT_100FT)
{
sc->lmc_miireg16 |= LMC_MII16_DS3_ZERO;
sc->ictl.cable_length = LMC_CTL_CABLE_LENGTH_LT_100FT;
}
lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16);
}
static void
lmc_ds3_default (lmc_softc_t * const sc)
{
sc->lmc_miireg16 = LMC_MII16_LED_ALL;
sc->lmc_media->set_link_status (sc, LMC_LINK_DOWN);
sc->lmc_media->set_cable_length (sc, LMC_CTL_CABLE_LENGTH_LT_100FT);
sc->lmc_media->set_scrambler (sc, LMC_CTL_OFF);
sc->lmc_media->set_crc_length (sc, LMC_CTL_CRC_LENGTH_16);
}
/*
* Given a user provided state, set ourselves up to match it. This will
* always reset the card if needed.
*/
static void
lmc_ds3_set_status (lmc_softc_t * const sc, lmc_ctl_t * ctl)
{
if (ctl == NULL)
{
sc->lmc_media->set_cable_length (sc, sc->ictl.cable_length);
sc->lmc_media->set_scrambler (sc, sc->ictl.scrambler_onoff);
lmc_set_protocol (sc, NULL);
return;
}
/*
* check for change in cable length setting
*/
if (ctl->cable_length && !sc->ictl.cable_length)
lmc_ds3_set_100ft (sc, LMC_CTL_CABLE_LENGTH_GT_100FT);
else if (!ctl->cable_length && sc->ictl.cable_length)
lmc_ds3_set_100ft (sc, LMC_CTL_CABLE_LENGTH_LT_100FT);
/*
* Check for change in scrambler setting (requires reset)
*/
if (ctl->scrambler_onoff && !sc->ictl.scrambler_onoff)
lmc_ds3_set_scram (sc, LMC_CTL_ON);
else if (!ctl->scrambler_onoff && sc->ictl.scrambler_onoff)
lmc_ds3_set_scram (sc, LMC_CTL_OFF);
lmc_set_protocol (sc, ctl);
}
static void
lmc_ds3_init (lmc_softc_t * const sc)
{
int i;
sc->ictl.cardtype = LMC_CTL_CARDTYPE_LMC5245;
/* writes zeros everywhere */
for (i = 0; i < 21; i++)
{
lmc_mii_writereg (sc, 0, 17, i);
lmc_mii_writereg (sc, 0, 18, 0);
}
/* set some essential bits */
lmc_mii_writereg (sc, 0, 17, 1);
lmc_mii_writereg (sc, 0, 18, 0x25); /* ser, xtx */
lmc_mii_writereg (sc, 0, 17, 5);
lmc_mii_writereg (sc, 0, 18, 0x80); /* emode */
lmc_mii_writereg (sc, 0, 17, 14);
lmc_mii_writereg (sc, 0, 18, 0x30); /* rcgen, tcgen */
/* clear counters and latched bits */
for (i = 0; i < 21; i++)
{
lmc_mii_writereg (sc, 0, 17, i);
lmc_mii_readreg (sc, 0, 18);
}
}
/*
* 1 == DS3 payload scrambled, 0 == not scrambled
*/
static void
lmc_ds3_set_scram (lmc_softc_t * const sc, int ie)
{
if (ie == LMC_CTL_ON)
{
sc->lmc_miireg16 |= LMC_MII16_DS3_SCRAM;
sc->ictl.scrambler_onoff = LMC_CTL_ON;
}
else
{
sc->lmc_miireg16 &= ~LMC_MII16_DS3_SCRAM;
sc->ictl.scrambler_onoff = LMC_CTL_OFF;
}
lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16);
}
/*
* return hardware link status.
* 0 == link is down, 1 == link is up.
*/
static int
lmc_ds3_get_link_status (lmc_softc_t * const sc)
{
u_int16_t link_status, link_status_11;
int ret = 1;
lmc_mii_writereg (sc, 0, 17, 7);
link_status = lmc_mii_readreg (sc, 0, 18);
/* LMC5245 (DS3) & LMC1200 (DS1) LED definitions
* led0 yellow = far-end adapter is in Red alarm condition
* led1 blue = received an Alarm Indication signal
* (upstream failure)
* led2 Green = power to adapter, Gate Array loaded & driver
* attached
* led3 red = Loss of Signal (LOS) or out of frame (OOF)
* conditions detected on T3 receive signal
*/
lmc_led_on(sc, LMC_DS3_LED2);
if ((link_status & LMC_FRAMER_REG0_DLOS) ||
(link_status & LMC_FRAMER_REG0_OOFS)){
ret = 0;
if(sc->last_led_err[3] != 1){
u16 r1;
lmc_mii_writereg (sc, 0, 17, 01); /* Turn on Xbit error as our cisco does */
r1 = lmc_mii_readreg (sc, 0, 18);
r1 &= 0xfe;
lmc_mii_writereg(sc, 0, 18, r1);
printk(KERN_WARNING "%s: Red Alarm - Loss of Signal or Loss of Framing\n", sc->name);
}
lmc_led_on(sc, LMC_DS3_LED3); /* turn on red LED */
sc->last_led_err[3] = 1;
}
else {
lmc_led_off(sc, LMC_DS3_LED3); /* turn on red LED */
if(sc->last_led_err[3] == 1){
u16 r1;
lmc_mii_writereg (sc, 0, 17, 01); /* Turn off Xbit error */
r1 = lmc_mii_readreg (sc, 0, 18);
r1 |= 0x01;
lmc_mii_writereg(sc, 0, 18, r1);
}
sc->last_led_err[3] = 0;
}
lmc_mii_writereg(sc, 0, 17, 0x10);
link_status_11 = lmc_mii_readreg(sc, 0, 18);
if((link_status & LMC_FRAMER_REG0_AIS) ||
(link_status_11 & LMC_FRAMER_REG10_XBIT)) {
ret = 0;
if(sc->last_led_err[0] != 1){
printk(KERN_WARNING "%s: AIS Alarm or XBit Error\n", sc->name);
printk(KERN_WARNING "%s: Remote end has loss of signal or framing\n", sc->name);
}
lmc_led_on(sc, LMC_DS3_LED0);
sc->last_led_err[0] = 1;
}
else {
lmc_led_off(sc, LMC_DS3_LED0);
sc->last_led_err[0] = 0;
}
lmc_mii_writereg (sc, 0, 17, 9);
link_status = lmc_mii_readreg (sc, 0, 18);
if(link_status & LMC_FRAMER_REG9_RBLUE){
ret = 0;
if(sc->last_led_err[1] != 1){
printk(KERN_WARNING "%s: Blue Alarm - Receiving all 1's\n", sc->name);
}
lmc_led_on(sc, LMC_DS3_LED1);
sc->last_led_err[1] = 1;
}
else {
lmc_led_off(sc, LMC_DS3_LED1);
sc->last_led_err[1] = 0;
}
return ret;
}
/*
* 0 == 16bit, 1 == 32bit
*/
static void
lmc_ds3_set_crc_length (lmc_softc_t * const sc, int state)
{
if (state == LMC_CTL_CRC_LENGTH_32)
{
/* 32 bit */
sc->lmc_miireg16 |= LMC_MII16_DS3_CRC;
sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_32;
}
else
{
/* 16 bit */
sc->lmc_miireg16 &= ~LMC_MII16_DS3_CRC;
sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_16;
}
lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16);
}
static void
lmc_ds3_watchdog (lmc_softc_t * const sc)
{
}
/*
* SSI methods
*/
static void
lmc_ssi_init (lmc_softc_t * const sc)
{
u_int16_t mii17;
int cable;
sc->ictl.cardtype = LMC_CTL_CARDTYPE_LMC1000;
mii17 = lmc_mii_readreg (sc, 0, 17);
cable = (mii17 & LMC_MII17_SSI_CABLE_MASK) >> LMC_MII17_SSI_CABLE_SHIFT;
sc->ictl.cable_type = cable;
lmc_gpio_mkoutput (sc, LMC_GEP_SSI_TXCLOCK);
}
static void
lmc_ssi_default (lmc_softc_t * const sc)
{
sc->lmc_miireg16 = LMC_MII16_LED_ALL;
/*
* make TXCLOCK always be an output
*/
lmc_gpio_mkoutput (sc, LMC_GEP_SSI_TXCLOCK);
sc->lmc_media->set_link_status (sc, LMC_LINK_DOWN);
sc->lmc_media->set_clock_source (sc, LMC_CTL_CLOCK_SOURCE_EXT);
sc->lmc_media->set_speed (sc, NULL);
sc->lmc_media->set_crc_length (sc, LMC_CTL_CRC_LENGTH_16);
}
/*
* Given a user provided state, set ourselves up to match it. This will
* always reset the card if needed.
*/
static void
lmc_ssi_set_status (lmc_softc_t * const sc, lmc_ctl_t * ctl)
{
if (ctl == NULL)
{
sc->lmc_media->set_clock_source (sc, sc->ictl.clock_source);
sc->lmc_media->set_speed (sc, &sc->ictl);
lmc_set_protocol (sc, NULL);
return;
}
/*
* check for change in clock source
*/
if (ctl->clock_source == LMC_CTL_CLOCK_SOURCE_INT
&& sc->ictl.clock_source == LMC_CTL_CLOCK_SOURCE_EXT)
{
sc->lmc_media->set_clock_source (sc, LMC_CTL_CLOCK_SOURCE_INT);
sc->lmc_timing = LMC_CTL_CLOCK_SOURCE_INT;
}
else if (ctl->clock_source == LMC_CTL_CLOCK_SOURCE_EXT
&& sc->ictl.clock_source == LMC_CTL_CLOCK_SOURCE_INT)
{
sc->lmc_media->set_clock_source (sc, LMC_CTL_CLOCK_SOURCE_EXT);
sc->lmc_timing = LMC_CTL_CLOCK_SOURCE_EXT;
}
if (ctl->clock_rate != sc->ictl.clock_rate)
sc->lmc_media->set_speed (sc, ctl);
lmc_set_protocol (sc, ctl);
}
/*
* 1 == internal, 0 == external
*/
static void
lmc_ssi_set_clock (lmc_softc_t * const sc, int ie)
{
int old;
old = ie;
if (ie == LMC_CTL_CLOCK_SOURCE_EXT)
{
sc->lmc_gpio &= ~(LMC_GEP_SSI_TXCLOCK);
LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_EXT;
if(ie != old)
printk (LMC_PRINTF_FMT ": clock external\n", LMC_PRINTF_ARGS);
}
else
{
sc->lmc_gpio |= LMC_GEP_SSI_TXCLOCK;
LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_INT;
if(ie != old)
printk (LMC_PRINTF_FMT ": clock internal\n", LMC_PRINTF_ARGS);
}
}
static void
lmc_ssi_set_speed (lmc_softc_t * const sc, lmc_ctl_t * ctl)
{
lmc_ctl_t *ictl = &sc->ictl;
lmc_av9110_t *av;
/* original settings for clock rate of:
* 100 Khz (8,25,0,0,2) were incorrect
* they should have been 80,125,1,3,3
* There are 17 param combinations to produce this freq.
* For 1.5 Mhz use 120,100,1,1,2 (226 param. combinations)
*/
if (ctl == NULL)
{
av = &ictl->cardspec.ssi;
ictl->clock_rate = 1500000;
av->f = ictl->clock_rate;
av->n = 120;
av->m = 100;
av->v = 1;
av->x = 1;
av->r = 2;
write_av9110 (sc, av->n, av->m, av->v, av->x, av->r);
return;
}
av = &ctl->cardspec.ssi;
if (av->f == 0)
return;
ictl->clock_rate = av->f; /* really, this is the rate we are */
ictl->cardspec.ssi = *av;
write_av9110 (sc, av->n, av->m, av->v, av->x, av->r);
}
/*
* return hardware link status.
* 0 == link is down, 1 == link is up.
*/
static int
lmc_ssi_get_link_status (lmc_softc_t * const sc)
{
u_int16_t link_status;
u_int32_t ticks;
int ret = 1;
int hw_hdsk = 1;
/*
* missing CTS? Hmm. If we require CTS on, we may never get the
* link to come up, so omit it in this test.
*
* Also, it seems that with a loopback cable, DCD isn't asserted,
* so just check for things like this:
* DSR _must_ be asserted.
* One of DCD or CTS must be asserted.
*/
/* LMC 1000 (SSI) LED definitions
* led0 Green = power to adapter, Gate Array loaded &
* driver attached
* led1 Green = DSR and DTR and RTS and CTS are set
* led2 Green = Cable detected
* led3 red = No timing is available from the
* cable or the on-board frequency
* generator.
*/
link_status = lmc_mii_readreg (sc, 0, 16);
/* Is the transmit clock still available */
ticks = LMC_CSR_READ (sc, csr_gp_timer);
ticks = 0x0000ffff - (ticks & 0x0000ffff);
lmc_led_on (sc, LMC_MII16_LED0);
/* ====== transmit clock determination ===== */
if (sc->lmc_timing == LMC_CTL_CLOCK_SOURCE_INT) {
lmc_led_off(sc, LMC_MII16_LED3);
}
else if (ticks == 0 ) { /* no clock found ? */
ret = 0;
if(sc->last_led_err[3] != 1){
sc->stats.tx_lossOfClockCnt++;
printk(KERN_WARNING "%s: Lost Clock, Link Down\n", sc->name);
}
sc->last_led_err[3] = 1;
lmc_led_on (sc, LMC_MII16_LED3); /* turn ON red LED */
}
else {
if(sc->last_led_err[3] == 1)
printk(KERN_WARNING "%s: Clock Returned\n", sc->name);
sc->last_led_err[3] = 0;
lmc_led_off (sc, LMC_MII16_LED3); /* turn OFF red LED */
}
if ((link_status & LMC_MII16_SSI_DSR) == 0) { /* Also HSSI CA */
ret = 0;
hw_hdsk = 0;
}
#ifdef CONFIG_LMC_IGNORE_HARDWARE_HANDSHAKE
if ((link_status & (LMC_MII16_SSI_CTS | LMC_MII16_SSI_DCD)) == 0){
ret = 0;
hw_hdsk = 0;
}
#endif
if(hw_hdsk == 0){
if(sc->last_led_err[1] != 1)
printk(KERN_WARNING "%s: DSR not asserted\n", sc->name);
sc->last_led_err[1] = 1;
lmc_led_off(sc, LMC_MII16_LED1);
}
else {
if(sc->last_led_err[1] != 0)
printk(KERN_WARNING "%s: DSR now asserted\n", sc->name);
sc->last_led_err[1] = 0;
lmc_led_on(sc, LMC_MII16_LED1);
}
if(ret == 1) {
lmc_led_on(sc, LMC_MII16_LED2); /* Over all good status? */
}
return ret;
}
static void
lmc_ssi_set_link_status (lmc_softc_t * const sc, int state)
{
if (state == LMC_LINK_UP)
{
sc->lmc_miireg16 |= (LMC_MII16_SSI_DTR | LMC_MII16_SSI_RTS);
printk (LMC_PRINTF_FMT ": asserting DTR and RTS\n", LMC_PRINTF_ARGS);
}
else
{
sc->lmc_miireg16 &= ~(LMC_MII16_SSI_DTR | LMC_MII16_SSI_RTS);
printk (LMC_PRINTF_FMT ": deasserting DTR and RTS\n", LMC_PRINTF_ARGS);
}
lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16);
}
/*
* 0 == 16bit, 1 == 32bit
*/
static void
lmc_ssi_set_crc_length (lmc_softc_t * const sc, int state)
{
if (state == LMC_CTL_CRC_LENGTH_32)
{
/* 32 bit */
sc->lmc_miireg16 |= LMC_MII16_SSI_CRC;
sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_32;
sc->lmc_crcSize = LMC_CTL_CRC_BYTESIZE_4;
}
else
{
/* 16 bit */
sc->lmc_miireg16 &= ~LMC_MII16_SSI_CRC;
sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_16;
sc->lmc_crcSize = LMC_CTL_CRC_BYTESIZE_2;
}
lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16);
}
/*
* These are bits to program the ssi frequency generator
*/
static inline void
write_av9110_bit (lmc_softc_t * sc, int c)
{
/*
* set the data bit as we need it.
*/
sc->lmc_gpio &= ~(LMC_GEP_CLK);
if (c & 0x01)
sc->lmc_gpio |= LMC_GEP_DATA;
else
sc->lmc_gpio &= ~(LMC_GEP_DATA);
LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
/*
* set the clock to high
*/
sc->lmc_gpio |= LMC_GEP_CLK;
LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
/*
* set the clock to low again.
*/
sc->lmc_gpio &= ~(LMC_GEP_CLK);
LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
}
static void
write_av9110 (lmc_softc_t * sc, u_int32_t n, u_int32_t m, u_int32_t v,
u_int32_t x, u_int32_t r)
{
int i;
#if 0
printk (LMC_PRINTF_FMT ": speed %u, %d %d %d %d %d\n",
LMC_PRINTF_ARGS, sc->ictl.clock_rate, n, m, v, x, r);
#endif
sc->lmc_gpio |= LMC_GEP_SSI_GENERATOR;
sc->lmc_gpio &= ~(LMC_GEP_DATA | LMC_GEP_CLK);
LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
/*
* Set the TXCLOCK, GENERATOR, SERIAL, and SERIALCLK
* as outputs.
*/
lmc_gpio_mkoutput (sc, (LMC_GEP_DATA | LMC_GEP_CLK
| LMC_GEP_SSI_GENERATOR));
sc->lmc_gpio &= ~(LMC_GEP_SSI_GENERATOR);
LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
/*
* a shifting we will go...
*/
for (i = 0; i < 7; i++)
write_av9110_bit (sc, n >> i);
for (i = 0; i < 7; i++)
write_av9110_bit (sc, m >> i);
for (i = 0; i < 1; i++)
write_av9110_bit (sc, v >> i);
for (i = 0; i < 2; i++)
write_av9110_bit (sc, x >> i);
for (i = 0; i < 2; i++)
write_av9110_bit (sc, r >> i);
for (i = 0; i < 5; i++)
write_av9110_bit (sc, 0x17 >> i);
/*
* stop driving serial-related signals
*/
lmc_gpio_mkinput (sc,
(LMC_GEP_DATA | LMC_GEP_CLK
| LMC_GEP_SSI_GENERATOR));
}
static void
lmc_ssi_watchdog (lmc_softc_t * const sc)
{
u_int16_t mii17;
struct ssicsr2
{
unsigned short dtr:1, dsr:1, rts:1, cable:3, crc:1, led0:1, led1:1,
led2:1, led3:1, fifo:1, ll:1, rl:1, tm:1, loop:1;
};
struct ssicsr2 *ssicsr;
mii17 = lmc_mii_readreg (sc, 0, 17);
ssicsr = (struct ssicsr2 *) &mii17;
if (ssicsr->cable == 7)
{
lmc_led_off (sc, LMC_MII16_LED2);
}
else
{
lmc_led_on (sc, LMC_MII16_LED2);
}
}
/*
* T1 methods
*/
/*
* The framer regs are multiplexed through MII regs 17 & 18
* write the register address to MII reg 17 and the * data to MII reg 18. */
static void
lmc_t1_write (lmc_softc_t * const sc, int a, int d)
{
lmc_mii_writereg (sc, 0, 17, a);
lmc_mii_writereg (sc, 0, 18, d);
}
/* Save a warning
static int
lmc_t1_read (lmc_softc_t * const sc, int a)
{
lmc_mii_writereg (sc, 0, 17, a);
return lmc_mii_readreg (sc, 0, 18);
}
*/
static void
lmc_t1_init (lmc_softc_t * const sc)
{
u_int16_t mii16;
int i;
sc->ictl.cardtype = LMC_CTL_CARDTYPE_LMC1200;
mii16 = lmc_mii_readreg (sc, 0, 16);
/* reset 8370 */
mii16 &= ~LMC_MII16_T1_RST;
lmc_mii_writereg (sc, 0, 16, mii16 | LMC_MII16_T1_RST);
lmc_mii_writereg (sc, 0, 16, mii16);
/* set T1 or E1 line. Uses sc->lmcmii16 reg in function so update it */
sc->lmc_miireg16 = mii16;
lmc_t1_set_circuit_type(sc, LMC_CTL_CIRCUIT_TYPE_T1);
mii16 = sc->lmc_miireg16;
lmc_t1_write (sc, 0x01, 0x1B); /* CR0 - primary control */
lmc_t1_write (sc, 0x02, 0x42); /* JAT_CR - jitter atten config */
lmc_t1_write (sc, 0x14, 0x00); /* LOOP - loopback config */
lmc_t1_write (sc, 0x15, 0x00); /* DL3_TS - external data link timeslot */
lmc_t1_write (sc, 0x18, 0xFF); /* PIO - programmable I/O */
lmc_t1_write (sc, 0x19, 0x30); /* POE - programmable OE */
lmc_t1_write (sc, 0x1A, 0x0F); /* CMUX - clock input mux */
lmc_t1_write (sc, 0x20, 0x41); /* LIU_CR - RX LIU config */
lmc_t1_write (sc, 0x22, 0x76); /* RLIU_CR - RX LIU config */
lmc_t1_write (sc, 0x40, 0x03); /* RCR0 - RX config */
lmc_t1_write (sc, 0x45, 0x00); /* RALM - RX alarm config */
lmc_t1_write (sc, 0x46, 0x05); /* LATCH - RX alarm/err/cntr latch */
lmc_t1_write (sc, 0x68, 0x40); /* TLIU_CR - TX LIU config */
lmc_t1_write (sc, 0x70, 0x0D); /* TCR0 - TX framer config */
lmc_t1_write (sc, 0x71, 0x05); /* TCR1 - TX config */
lmc_t1_write (sc, 0x72, 0x0B); /* TFRM - TX frame format */
lmc_t1_write (sc, 0x73, 0x00); /* TERROR - TX error insert */
lmc_t1_write (sc, 0x74, 0x00); /* TMAN - TX manual Sa/FEBE config */
lmc_t1_write (sc, 0x75, 0x00); /* TALM - TX alarm signal config */
lmc_t1_write (sc, 0x76, 0x00); /* TPATT - TX test pattern config */
lmc_t1_write (sc, 0x77, 0x00); /* TLB - TX inband loopback config */
lmc_t1_write (sc, 0x90, 0x05); /* CLAD_CR - clock rate adapter config */
lmc_t1_write (sc, 0x91, 0x05); /* CSEL - clad freq sel */
lmc_t1_write (sc, 0xA6, 0x00); /* DL1_CTL - DL1 control */
lmc_t1_write (sc, 0xB1, 0x00); /* DL2_CTL - DL2 control */
lmc_t1_write (sc, 0xD0, 0x47); /* SBI_CR - sys bus iface config */
lmc_t1_write (sc, 0xD1, 0x70); /* RSB_CR - RX sys bus config */
lmc_t1_write (sc, 0xD4, 0x30); /* TSB_CR - TX sys bus config */
for (i = 0; i < 32; i++)
{
lmc_t1_write (sc, 0x0E0 + i, 0x00); /* SBCn - sys bus per-channel ctl */
lmc_t1_write (sc, 0x100 + i, 0x00); /* TPCn - TX per-channel ctl */
lmc_t1_write (sc, 0x180 + i, 0x00); /* RPCn - RX per-channel ctl */
}
for (i = 1; i < 25; i++)
{
lmc_t1_write (sc, 0x0E0 + i, 0x0D); /* SBCn - sys bus per-channel ctl */
}
mii16 |= LMC_MII16_T1_XOE;
lmc_mii_writereg (sc, 0, 16, mii16);
sc->lmc_miireg16 = mii16;
}
static void
lmc_t1_default (lmc_softc_t * const sc)
{
sc->lmc_miireg16 = LMC_MII16_LED_ALL;
sc->lmc_media->set_link_status (sc, LMC_LINK_DOWN);
sc->lmc_media->set_circuit_type (sc, LMC_CTL_CIRCUIT_TYPE_T1);
sc->lmc_media->set_crc_length (sc, LMC_CTL_CRC_LENGTH_16);
/* Right now we can only clock from out internal source */
sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_INT;
}
/* * Given a user provided state, set ourselves up to match it. This will * always reset the card if needed.
*/
static void
lmc_t1_set_status (lmc_softc_t * const sc, lmc_ctl_t * ctl)
{
if (ctl == NULL)
{
sc->lmc_media->set_circuit_type (sc, sc->ictl.circuit_type);
lmc_set_protocol (sc, NULL);
return;
}
/*
* check for change in circuit type */
if (ctl->circuit_type == LMC_CTL_CIRCUIT_TYPE_T1
&& sc->ictl.circuit_type ==
LMC_CTL_CIRCUIT_TYPE_E1) sc->lmc_media->set_circuit_type (sc,
LMC_CTL_CIRCUIT_TYPE_E1);
else if (ctl->circuit_type == LMC_CTL_CIRCUIT_TYPE_E1
&& sc->ictl.circuit_type == LMC_CTL_CIRCUIT_TYPE_T1)
sc->lmc_media->set_circuit_type (sc, LMC_CTL_CIRCUIT_TYPE_T1);
lmc_set_protocol (sc, ctl);
}
/*
* return hardware link status.
* 0 == link is down, 1 == link is up.
*/ static int
lmc_t1_get_link_status (lmc_softc_t * const sc)
{
u_int16_t link_status;
int ret = 1;
/* LMC5245 (DS3) & LMC1200 (DS1) LED definitions
* led0 yellow = far-end adapter is in Red alarm condition
* led1 blue = received an Alarm Indication signal
* (upstream failure)
* led2 Green = power to adapter, Gate Array loaded & driver
* attached
* led3 red = Loss of Signal (LOS) or out of frame (OOF)
* conditions detected on T3 receive signal
*/
lmc_trace(sc->lmc_device, "lmc_t1_get_link_status in");
lmc_led_on(sc, LMC_DS3_LED2);
lmc_mii_writereg (sc, 0, 17, T1FRAMER_ALARM1_STATUS);
link_status = lmc_mii_readreg (sc, 0, 18);
if (link_status & T1F_RAIS) { /* turn on blue LED */
ret = 0;
if(sc->last_led_err[1] != 1){
printk(KERN_WARNING "%s: Receive AIS/Blue Alarm. Far end in RED alarm\n", sc->name);
}
lmc_led_on(sc, LMC_DS3_LED1);
sc->last_led_err[1] = 1;
}
else {
if(sc->last_led_err[1] != 0){
printk(KERN_WARNING "%s: End AIS/Blue Alarm\n", sc->name);
}
lmc_led_off (sc, LMC_DS3_LED1);
sc->last_led_err[1] = 0;
}
/*
* Yellow Alarm is nasty evil stuff, looks at data patterns
* inside the channel and confuses it with HDLC framing
* ignore all yellow alarms.
*
* Do listen to MultiFrame Yellow alarm which while implemented
* different ways isn't in the channel and hence somewhat
* more reliable
*/
if (link_status & T1F_RMYEL) {
ret = 0;
if(sc->last_led_err[0] != 1){
printk(KERN_WARNING "%s: Receive Yellow AIS Alarm\n", sc->name);
}
lmc_led_on(sc, LMC_DS3_LED0);
sc->last_led_err[0] = 1;
}
else {
if(sc->last_led_err[0] != 0){
printk(KERN_WARNING "%s: End of Yellow AIS Alarm\n", sc->name);
}
lmc_led_off(sc, LMC_DS3_LED0);
sc->last_led_err[0] = 0;
}
/*
* Loss of signal and los of frame
* Use the green bit to identify which one lit the led
*/
if(link_status & T1F_RLOF){
ret = 0;
if(sc->last_led_err[3] != 1){
printk(KERN_WARNING "%s: Local Red Alarm: Loss of Framing\n", sc->name);
}
lmc_led_on(sc, LMC_DS3_LED3);
sc->last_led_err[3] = 1;
}
else {
if(sc->last_led_err[3] != 0){
printk(KERN_WARNING "%s: End Red Alarm (LOF)\n", sc->name);
}
if( ! (link_status & T1F_RLOS))
lmc_led_off(sc, LMC_DS3_LED3);
sc->last_led_err[3] = 0;
}
if(link_status & T1F_RLOS){
ret = 0;
if(sc->last_led_err[2] != 1){
printk(KERN_WARNING "%s: Local Red Alarm: Loss of Signal\n", sc->name);
}
lmc_led_on(sc, LMC_DS3_LED3);
sc->last_led_err[2] = 1;
}
else {
if(sc->last_led_err[2] != 0){
printk(KERN_WARNING "%s: End Red Alarm (LOS)\n", sc->name);
}
if( ! (link_status & T1F_RLOF))
lmc_led_off(sc, LMC_DS3_LED3);
sc->last_led_err[2] = 0;
}
sc->lmc_xinfo.t1_alarm1_status = link_status;
lmc_mii_writereg (sc, 0, 17, T1FRAMER_ALARM2_STATUS);
sc->lmc_xinfo.t1_alarm2_status = lmc_mii_readreg (sc, 0, 18);
lmc_trace(sc->lmc_device, "lmc_t1_get_link_status out");
return ret;
}
/*
* 1 == T1 Circuit Type , 0 == E1 Circuit Type
*/
static void
lmc_t1_set_circuit_type (lmc_softc_t * const sc, int ie)
{
if (ie == LMC_CTL_CIRCUIT_TYPE_T1) {
sc->lmc_miireg16 |= LMC_MII16_T1_Z;
sc->ictl.circuit_type = LMC_CTL_CIRCUIT_TYPE_T1;
printk(KERN_INFO "%s: In T1 Mode\n", sc->name);
}
else {
sc->lmc_miireg16 &= ~LMC_MII16_T1_Z;
sc->ictl.circuit_type = LMC_CTL_CIRCUIT_TYPE_E1;
printk(KERN_INFO "%s: In E1 Mode\n", sc->name);
}
lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16);
}
/*
* 0 == 16bit, 1 == 32bit */
static void
lmc_t1_set_crc_length (lmc_softc_t * const sc, int state)
{
if (state == LMC_CTL_CRC_LENGTH_32)
{
/* 32 bit */
sc->lmc_miireg16 |= LMC_MII16_T1_CRC;
sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_32;
sc->lmc_crcSize = LMC_CTL_CRC_BYTESIZE_4;
}
else
{
/* 16 bit */ sc->lmc_miireg16 &= ~LMC_MII16_T1_CRC;
sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_16;
sc->lmc_crcSize = LMC_CTL_CRC_BYTESIZE_2;
}
lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16);
}
/*
* 1 == internal, 0 == external
*/
static void
lmc_t1_set_clock (lmc_softc_t * const sc, int ie)
{
int old;
old = ie;
if (ie == LMC_CTL_CLOCK_SOURCE_EXT)
{
sc->lmc_gpio &= ~(LMC_GEP_SSI_TXCLOCK);
LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_EXT;
if(old != ie)
printk (LMC_PRINTF_FMT ": clock external\n", LMC_PRINTF_ARGS);
}
else
{
sc->lmc_gpio |= LMC_GEP_SSI_TXCLOCK;
LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio);
sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_INT;
if(old != ie)
printk (LMC_PRINTF_FMT ": clock internal\n", LMC_PRINTF_ARGS);
}
}
static void
lmc_t1_watchdog (lmc_softc_t * const sc)
{
}
static void
lmc_set_protocol (lmc_softc_t * const sc, lmc_ctl_t * ctl)
{
if (ctl == 0)
{
sc->ictl.keepalive_onoff = LMC_CTL_ON;
return;
}
}
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