rcven.c File Reference

#include <console/console.h>
#include <device/mmio.h>
#include "raminit.h"
#include "i945.h"

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Functions
static u32	sample_strobes (int channel_offset, struct sys_info *sysinfo)
	sample the strobes signal More...
static void	set_receive_enable (int channel_offset, u8 medium, u8 coarse)
	This function sets receive enable coarse and medium timing parameters. More...
static int	normalize (int channel_offset, u8 *mediumcoarse, u8 *fine)
static int	find_preamble (int channel_offset, u8 *mediumcoarse, struct sys_info *sysinfo)
static int	add_quarter_clock (int channel_offset, u8 *mediumcoarse, u8 *fine)
	add a quarter clock to the current receive enable settings More...
static int	find_strobes_low (int channel_offset, u8 *mediumcoarse, u8 *fine, struct sys_info *sysinfo)
static int	find_strobes_edge (int channel_offset, u8 *mediumcoarse, u8 *fine, struct sys_info *sysinfo)
static int	receive_enable_autoconfig (int channel_offset, struct sys_info *sysinfo)
	Here we use a trick. More...
void	receive_enable_adjust (struct sys_info *sysinfo)

Function Documentation

add_quarter_clock()

static int add_quarter_clock ( int  channel_offset, u8 *  mediumcoarse, u8 *  fine  )

static

add a quarter clock to the current receive enable settings

Definition at line 142 of file rcven.c.

References BIOS_DEBUG, BIOS_SPEW, C0WL0REOST, mchbar_write8(), printk, and set_receive_enable().

Referenced by receive_enable_autoconfig().

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find_preamble()

static int find_preamble ( int  channel_offset, u8 *  mediumcoarse, struct sys_info *  sysinfo  )

static

Definition at line 109 of file rcven.c.

References BIOS_DEBUG, BIOS_SPEW, printk, sample_strobes(), and set_receive_enable().

Referenced by receive_enable_autoconfig().

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find_strobes_edge()

static int find_strobes_edge ( int  channel_offset, u8 *  mediumcoarse, u8 *  fine, struct sys_info *  sysinfo  )

static

Definition at line 198 of file rcven.c.

References BIOS_DEBUG, BIOS_SPEW, C0WL0REOST, mchbar_write8(), printk, sample_strobes(), and set_receive_enable().

Referenced by receive_enable_autoconfig().

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find_strobes_low()

static int find_strobes_low ( int  channel_offset, u8 *  mediumcoarse, u8 *  fine, struct sys_info *  sysinfo  )

static

Definition at line 165 of file rcven.c.

References BIOS_DEBUG, BIOS_SPEW, C0WL0REOST, mchbar_write8(), printk, sample_strobes(), and set_receive_enable().

Referenced by receive_enable_autoconfig().

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normalize()

static int normalize ( int  channel_offset, u8 *  mediumcoarse, u8 *  fine  )

static

Definition at line 87 of file rcven.c.

References BIOS_DEBUG, BIOS_SPEW, C0WL0REOST, mchbar_write8(), printk, and set_receive_enable().

Referenced by receive_enable_autoconfig().

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receive_enable_adjust()

void receive_enable_adjust

(

struct sys_info *

sysinfo

)

Definition at line 299 of file rcven.c.

References receive_enable_autoconfig(), and SYSINFO_DIMM_NOT_POPULATED.

Referenced by sdram_program_receive_enable().

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receive_enable_autoconfig()

static int receive_enable_autoconfig ( int  channel_offset, struct sys_info *  sysinfo  )

static

Here we use a trick.

The RCVEN channel 1 registers are all at an offset of 0x80 to the channel 0 registers. We don't want to waste a lot of if ()s so let's just pass 0 or 0x80 for the channel offset.

Definition at line 261 of file rcven.c.

References add_quarter_clock(), BIOS_DEBUG, BIOS_SPEW, C0WL0REOST, find_preamble(), find_strobes_edge(), find_strobes_low(), mchbar_read8(), normalize(), and printk.

Referenced by receive_enable_adjust().

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sample_strobes()

static u32 sample_strobes ( int  channel_offset, struct sys_info *  sysinfo  )

static

sample the strobes signal

[19] = 1: all bits are high [18] = 1: all bits are low [19:18] = 00: bits are mixed high, low

Definition at line 11 of file rcven.c.

References addr, C0DRB3, C0DRC1, mchbar_clrbits32, mchbar_read32(), mchbar_read8(), mchbar_setbits32, RCVENMT, and read32().

Referenced by find_preamble(), find_strobes_edge(), and find_strobes_low().

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set_receive_enable()

static void set_receive_enable ( int  channel_offset, u8  medium, u8  coarse  )

static

This function sets receive enable coarse and medium timing parameters.

Definition at line 50 of file rcven.c.

References BIOS_DEBUG, BIOS_SPEW, C0DRT1, mchbar_read32(), mchbar_write32(), printk, and RCVENMT.

Referenced by add_quarter_clock(), find_preamble(), find_strobes_edge(), find_strobes_low(), and normalize().

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