Patch set updated for coreboot: 6e2655b lynxpoint: expose iobp functions

[Stefan Reinauer]

Stefan Reinauer ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/4249

-gerrit

commit 6e2655b33c14c11d0cbd4abb694d7564fd248035
Author: Aaron Durbin 
Date:   Wed Jun 19 13:12:48 2013 -0500

lynxpoint: expose iobp functions

The iobp functions are useful to may of the southbridge
    devices as certain values need to be updated to properly
    initialize the devices. Therefore expose read, write, and
    updated iobp functions.

Change-Id: Id7fdd8d0d9f022f92d6285ecd8f85a52024ec2bb
    Signed-off-by: Aaron Durbin 
    Reviewed-on: https://gerrit.chromium.org/gerrit/59275
    Reviewed-by: Duncan Laurie 
---
 src/southbridge/intel/lynxpoint/pch.c | 25 +++++++++++++++++++------
 src/southbridge/intel/lynxpoint/pch.h |  2 ++
 2 files changed, 21 insertions(+), 6 deletions(-)

diff --git a/src/southbridge/intel/lynxpoint/pch.c b/src/southbridge/intel/lynxpoint/pch.c
index 58c68cd..05462c5 100644
--- a/src/southbridge/intel/lynxpoint/pch.c
+++ b/src/southbridge/intel/lynxpoint/pch.c
@@ -201,7 +201,7 @@ static inline int iobp_poll(void)
    return 0;
 }

-static u32 pch_iobp_read(u32 address)
+u32 pch_iobp_read(u32 address)
 {
    u16 status;

@@ -239,10 +239,15 @@ static u32 pch_iobp_read(u32 address)
    return RCBA32(IOBPD);
 }

-void pch_iobp_update(u32 address, u32 andvalue, u32 orvalue)
+void pch_iobp_write(u32 address, u32 data)
 {
    u16 status;
-	u32 data = pch_iobp_read(address);
+
+	if (!iobp_poll())
+		return;
+
+	/* Set the address */
+	RCBA32(IOBPIRI) = address;

/* WRITE OPCODE */
    status = RCBA16(IOBPS);
@@ -250,9 +255,6 @@ void pch_iobp_update(u32 address, u32 andvalue, u32 orvalue)
    status |= IOBPS_WRITE;
    RCBA16(IOBPS) = status;

-	/* Update the data */
-	data &= andvalue;
-	data |= orvalue;
    RCBA32(IOBPD) = data;

/* Undocumented magic */
@@ -276,6 +278,17 @@ void pch_iobp_update(u32 address, u32 andvalue, u32 orvalue)
    printk(BIOS_INFO, "IOBP: set 0x%08x to 0x%08x\n", address, data);
 }

+void pch_iobp_update(u32 address, u32 andvalue, u32 orvalue)
+{
+	u32 data = pch_iobp_read(address);
+
+	/* Update the data */
+	data &= andvalue;
+	data |= orvalue;
+
+	pch_iobp_write(address, data);
+}
+
 /* Check if any port in set X to X+3 is enabled */
 static int pch_pcie_check_set_enabled(device_t dev)
 {
diff --git a/src/southbridge/intel/lynxpoint/pch.h b/src/southbridge/intel/lynxpoint/pch.h
index 6ee81d1..c46153c 100644
--- a/src/southbridge/intel/lynxpoint/pch.h
+++ b/src/southbridge/intel/lynxpoint/pch.h
@@ -162,6 +162,8 @@ void disable_gpe(u32 mask);
 #include <arch/acpi.h>
 #include "chip.h"
 void pch_enable(device_t dev);
+u32 pch_iobp_read(u32 address);
+void pch_iobp_write(u32 address, u32 data);
 void pch_iobp_update(u32 address, u32 andvalue, u32 orvalue);
 #if CONFIG_ELOG
 void pch_log_state(void);