rcven.c File Reference

#include <device/mmio.h>
#include <console/console.h>
#include <delay.h>
#include <stdint.h>
#include "raminit.h"
#include "x4x.h"

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Data Structures
struct	rec_timing

Macros
#define	MAX_COARSE   15
#define	DQS_HIGH   1
#define	DQS_LOW   0
#define	RESET_CNTL(channel)   (0x5d8 + (channel) * 0x400)

Functions
static void	mfence (void)
static u8	sampledqs (u32 addr, u8 lane, u8 channel)
static void	program_timing (const struct rec_timing *timing, u8 channel, u8 lane)
static int	increase_medium (struct rec_timing *timing)
static int	decrease_medium (struct rec_timing *timing)
static int	increase_tap (struct rec_timing *timing)
static int	decrease_tap (struct rec_timing *timing)
static int	decr_coarse_low (u8 channel, u8 lane, u32 addr, struct rec_timing *timing)
static int	fine_search_dqs_high (u8 channel, u8 lane, u32 addr, struct rec_timing *timing)
static int	find_dqs_low (u8 channel, u8 lane, u32 addr, struct rec_timing *timing)
static int	find_dqs_high (u8 channel, u8 lane, u32 addr, struct rec_timing *timing)
static int	find_dqs_edge_lowhigh (u8 channel, u8 lane, u32 addr, struct rec_timing *timing)
static int	find_preamble (u8 channel, u8 lane, u32 addr, struct rec_timing *timing)
static int	calibrate_receive_enable (u8 channel, u8 lane, u32 addr, struct rec_timing *timing)
void	rcven (struct sysinfo *s)

Macro Definition Documentation

DQS_HIGH

#define DQS_HIGH   1

Definition at line 11 of file rcven.c.

DQS_LOW

#define DQS_LOW   0

Definition at line 12 of file rcven.c.

MAX_COARSE

#define MAX_COARSE   15

Definition at line 10 of file rcven.c.

RESET_CNTL

#define RESET_CNTL

(

channel

)

(0x5d8 + (channel) * 0x400)

Definition at line 14 of file rcven.c.

Function Documentation

calibrate_receive_enable()

static int calibrate_receive_enable ( u8  channel, u8  lane, u32  addr, struct rec_timing *  timing  )

static

Definition at line 240 of file rcven.c.

References addr, BIOS_WARNING, decrease_tap(), find_dqs_edge_lowhigh(), find_dqs_low(), find_preamble(), increase_medium(), mchbar_clrbits16, mchbar_clrsetbits16(), rec_timing::pi, printk, and program_timing().

Referenced by rcven().

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decr_coarse_low()

static int decr_coarse_low ( u8  channel, u8  lane, u32  addr, struct rec_timing *  timing  )

static

Definition at line 124 of file rcven.c.

References addr, BIOS_CRIT, rec_timing::coarse, DQS_LOW, rec_timing::medium, printk, program_timing(), RAM_DEBUG, and sampledqs().

Referenced by find_preamble().

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decrease_medium()

static int decrease_medium ( struct rec_timing *  timing )

static

Definition at line 86 of file rcven.c.

References BIOS_ERR, rec_timing::coarse, rec_timing::medium, and printk.

Referenced by decrease_tap(), and find_dqs_edge_lowhigh().

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decrease_tap()

static int decrease_tap ( struct rec_timing *  timing )

static

Definition at line 112 of file rcven.c.

References decrease_medium(), and rec_timing::tap.

Referenced by calibrate_receive_enable().

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find_dqs_edge_lowhigh()

static int find_dqs_edge_lowhigh ( u8  channel, u8  lane, u32  addr, struct rec_timing *  timing  )

static

Definition at line 204 of file rcven.c.

References addr, decrease_medium(), find_dqs_high(), fine_search_dqs_high(), and program_timing().

Referenced by calibrate_receive_enable().

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find_dqs_high()

static int find_dqs_high ( u8  channel, u8  lane, u32  addr, struct rec_timing *  timing  )

static

Definition at line 187 of file rcven.c.

References addr, BIOS_CRIT, rec_timing::coarse, DQS_HIGH, increase_medium(), rec_timing::medium, printk, program_timing(), RAM_DEBUG, and sampledqs().

Referenced by find_dqs_edge_lowhigh().

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find_dqs_low()

static int find_dqs_low ( u8  channel, u8  lane, u32  addr, struct rec_timing *  timing  )

static

Definition at line 172 of file rcven.c.

References addr, BIOS_CRIT, rec_timing::coarse, DQS_LOW, increase_medium(), rec_timing::medium, printk, program_timing(), RAM_DEBUG, and sampledqs().

Referenced by calibrate_receive_enable().

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find_preamble()

static int find_preamble ( u8  channel, u8  lane, u32  addr, struct rec_timing *  timing  )

static

Definition at line 221 of file rcven.c.

References addr, BIOS_CRIT, decr_coarse_low(), DQS_HIGH, increase_medium(), printk, program_timing(), and sampledqs().

Referenced by calibrate_receive_enable().

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fine_search_dqs_high()

static int fine_search_dqs_high ( u8  channel, u8  lane, u32  addr, struct rec_timing *  timing  )

static

Definition at line 140 of file rcven.c.

References addr, BIOS_CRIT, BIOS_WARNING, rec_timing::coarse, DQS_HIGH, increase_tap(), rec_timing::medium, printk, program_timing(), RAM_DEBUG, sampledqs(), and rec_timing::tap.

Referenced by find_dqs_edge_lowhigh().

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increase_medium()

static int increase_medium ( struct rec_timing *  timing )

static

Definition at line 72 of file rcven.c.

References BIOS_ERR, rec_timing::coarse, MAX_COARSE, rec_timing::medium, and printk.

Referenced by calibrate_receive_enable(), find_dqs_high(), find_dqs_low(), find_preamble(), and increase_tap().

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increase_tap()

static int increase_tap ( struct rec_timing *  timing )

static

Definition at line 100 of file rcven.c.

References increase_medium(), and rec_timing::tap.

Referenced by fine_search_dqs_high().

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mfence()

static void mfence ( void  )

inlinestatic

Definition at line 23 of file rcven.c.

Referenced by sampledqs().

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program_timing()

static void program_timing ( const struct rec_timing *  timing, u8  channel, u8  lane  )

static

Definition at line 46 of file rcven.c.

References rec_timing::coarse, mchbar_read16(), mchbar_read32(), mchbar_read8(), mchbar_write16(), mchbar_write32(), mchbar_write8(), rec_timing::medium, rec_timing::pi, printk, RAM_SPEW, and rec_timing::tap.

Referenced by calibrate_receive_enable(), decr_coarse_low(), find_dqs_edge_lowhigh(), find_dqs_high(), find_dqs_low(), find_preamble(), fine_search_dqs_high(), and rcven().

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rcven()

void rcven

(

struct sysinfo *

s

)

Definition at line 282 of file rcven.c.

References addr, BIOS_DEBUG, calibrate_receive_enable(), rec_timing::coarse, die(), FOR_EACH_BYTELANE, FOR_EACH_POPULATED_CHANNEL, FOR_EACH_POPULATED_RANK_IN_CHANNEL, mchbar_clrbits8, mchbar_clrsetbits16(), rec_timing::medium, rec_timing::pi, printk, program_timing(), s, rec_timing::tap, test_address(), and TOTAL_BYTELANES.

Referenced by does_lane_work(), find_rcven_pi_coarse(), program_timings(), and sdram_program_receive_enable().

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sampledqs()

static u8 sampledqs ( u32  addr, u8  lane, u8  channel  )

static

Definition at line 28 of file rcven.c.

References addr, mchbar_clrbits8, mchbar_read8(), mchbar_setbits8, mfence(), read32p(), RESET_CNTL, TOTAL_CHANNELS, and udelay().

Referenced by decr_coarse_low(), find_dqs_high(), find_dqs_low(), find_preamble(), and fine_search_dqs_high().

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