[PATCH 0/7] MIPS: sibyte build fixes

[PATCH 0/7] MIPS: sibyte build fixes

[Markos Chandras]

Hi,

The following patches aim to fix multiple build problems on 
sibyte. These patches should be applied to the
upstream-sfr/mips-for-linux-next tree.

Markos Chandras (7):
  MIPS: sibyte: Fix build for SIBYTE_BW_TRACE
  MIPS: sibyte: Declare the cfe_write() buffer as constant
  MIPS: sibyte: Add missing sched.h header
  MIPS: sibyte: Amend dependencies for SIBYTE_BUS_WATCHER
  drivers: watchdog: sb_wdog: Fix 32bit linking problems
  drivers: ssb: Kconfig: Amend SSB_EMBEDDED dependencies
  MIPS: sibyte: Remove unused variable.

 arch/mips/fw/cfe/cfe_api.c             | 4 ++--
 arch/mips/include/asm/fw/cfe/cfe_api.h | 4 ++--
 arch/mips/mm/cerr-sb1.c                | 2 +-
 arch/mips/sibyte/Kconfig               | 3 ++-
 arch/mips/sibyte/common/sb_tbprof.c    | 1 +
 arch/mips/sibyte/sb1250/bus_watcher.c  | 3 ---
 drivers/ssb/Kconfig                    | 2 +-
 drivers/watchdog/sb_wdog.c             | 5 ++++-
 8 files changed, 13 insertions(+), 11 deletions(-)

-- 
1.8.2.1

[PATCH 0/7] MIPS: sibyte build fixes

[Markos Chandras]

Hi,

The following patches aim to fix multiple build problems on 
sibyte. These patches should be applied to the
upstream-sfr/mips-for-linux-next tree.

Markos Chandras (7):
  MIPS: sibyte: Fix build for SIBYTE_BW_TRACE
  MIPS: sibyte: Declare the cfe_write() buffer as constant
  MIPS: sibyte: Add missing sched.h header
  MIPS: sibyte: Amend dependencies for SIBYTE_BUS_WATCHER
  drivers: watchdog: sb_wdog: Fix 32bit linking problems
  drivers: ssb: Kconfig: Amend SSB_EMBEDDED dependencies
  MIPS: sibyte: Remove unused variable.

 arch/mips/fw/cfe/cfe_api.c             | 4 ++--
 arch/mips/include/asm/fw/cfe/cfe_api.h | 4 ++--
 arch/mips/mm/cerr-sb1.c                | 2 +-
 arch/mips/sibyte/Kconfig               | 3 ++-
 arch/mips/sibyte/common/sb_tbprof.c    | 1 +
 arch/mips/sibyte/sb1250/bus_watcher.c  | 3 ---
 drivers/ssb/Kconfig                    | 2 +-
 drivers/watchdog/sb_wdog.c             | 5 ++++-
 8 files changed, 13 insertions(+), 11 deletions(-)

-- 
1.8.2.1

[PATCH 1/7] MIPS: sibyte: Fix build for SIBYTE_BW_TRACE

[Markos Chandras]

The M_BCM1480_SCD_TRACE_CFG_FREEZE macro removed in
8deab1144b553548fb2f1b51affdd36dcd652aaa
"[MIPS] Updated Sibyte headers"

This broke the build for the sibyte platfrom when
SIBYTE_BW_TRACE is enabled:
arch/mips/mm/cerr-sb1.c:186:2: error: 'M_BCM1480_SCD_TRACE_CFG_FREEZE'
undeclared (first use in this function)

We fix this by replacing it with the M_BCM1480_SYS_RESERVED4 macro

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Acked-by: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: sibyte-users@bitmover.com
---
 arch/mips/mm/cerr-sb1.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/mips/mm/cerr-sb1.c b/arch/mips/mm/cerr-sb1.c
index 576add3..1a24534 100644
--- a/arch/mips/mm/cerr-sb1.c
+++ b/arch/mips/mm/cerr-sb1.c
@@ -183,7 +183,7 @@ asmlinkage void sb1_cache_error(void)
 #ifdef CONFIG_SIBYTE_BW_TRACE
 	/* Freeze the trace buffer now */
 #if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80)
-	csr_out32(M_BCM1480_SCD_TRACE_CFG_FREEZE, IOADDR(A_SCD_TRACE_CFG));
+	csr_out32(M_BCM1480_SYS_RESERVED4, IOADDR(A_SCD_TRACE_CFG));
 #else
 	csr_out32(M_SCD_TRACE_CFG_FREEZE, IOADDR(A_SCD_TRACE_CFG));
 #endif
-- 
1.8.2.1

[PATCH 1/7] MIPS: sibyte: Fix build for SIBYTE_BW_TRACE

[Markos Chandras]

The M_BCM1480_SCD_TRACE_CFG_FREEZE macro removed in
8deab1144b553548fb2f1b51affdd36dcd652aaa
"[MIPS] Updated Sibyte headers"

This broke the build for the sibyte platfrom when
SIBYTE_BW_TRACE is enabled:
arch/mips/mm/cerr-sb1.c:186:2: error: 'M_BCM1480_SCD_TRACE_CFG_FREEZE'
undeclared (first use in this function)

We fix this by replacing it with the M_BCM1480_SYS_RESERVED4 macro

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Acked-by: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: sibyte-users@bitmover.com
---
 arch/mips/mm/cerr-sb1.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/mips/mm/cerr-sb1.c b/arch/mips/mm/cerr-sb1.c
index 576add3..1a24534 100644
--- a/arch/mips/mm/cerr-sb1.c
+++ b/arch/mips/mm/cerr-sb1.c
@@ -183,7 +183,7 @@ asmlinkage void sb1_cache_error(void)
 #ifdef CONFIG_SIBYTE_BW_TRACE
 	/* Freeze the trace buffer now */
 #if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80)
-	csr_out32(M_BCM1480_SCD_TRACE_CFG_FREEZE, IOADDR(A_SCD_TRACE_CFG));
+	csr_out32(M_BCM1480_SYS_RESERVED4, IOADDR(A_SCD_TRACE_CFG));
 #else
 	csr_out32(M_SCD_TRACE_CFG_FREEZE, IOADDR(A_SCD_TRACE_CFG));
 #endif
-- 
1.8.2.1

[PATCH 2/7] MIPS: sibyte: Declare the cfe_write() buffer as constant

[Markos Chandras]

The write() prototype expects a const char * as argument so declare
it as such.

Fixes the following build problem:

arch/mips/sibyte/common/cfe_console.c:23:5: error: passing argument 2 of
'cfe_write' discards 'const' qualifier from pointer target type [-Werror]
arch/mips/sibyte/common/cfe_console.c:34:4: error: passing argument 2 of
'cfe_write' makes pointer from integer without a cast [-Werror]

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Acked-by: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: sibyte-users@bitmover.com
---
 arch/mips/fw/cfe/cfe_api.c             | 4 ++--
 arch/mips/include/asm/fw/cfe/cfe_api.h | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/mips/fw/cfe/cfe_api.c b/arch/mips/fw/cfe/cfe_api.c
index d06dc5a6..cf84f01 100644
--- a/arch/mips/fw/cfe/cfe_api.c
+++ b/arch/mips/fw/cfe/cfe_api.c
@@ -406,12 +406,12 @@ int cfe_setenv(char *name, char *val)
 	return xiocb.xiocb_status;
 }
 
-int cfe_write(int handle, unsigned char *buffer, int length)
+int cfe_write(int handle, const char *buffer, int length)
 {
 	return cfe_writeblk(handle, 0, buffer, length);
 }
 
-int cfe_writeblk(int handle, s64 offset, unsigned char *buffer, int length)
+int cfe_writeblk(int handle, s64 offset, const char *buffer, int length)
 {
 	struct cfe_xiocb xiocb;
 
diff --git a/arch/mips/include/asm/fw/cfe/cfe_api.h b/arch/mips/include/asm/fw/cfe/cfe_api.h
index 1734755..a0ea69e 100644
--- a/arch/mips/include/asm/fw/cfe/cfe_api.h
+++ b/arch/mips/include/asm/fw/cfe/cfe_api.h
@@ -115,8 +115,8 @@ int cfe_read(int handle, unsigned char *buffer, int length);
 int cfe_readblk(int handle, int64_t offset, unsigned char *buffer,
 		int length);
 int cfe_setenv(char *name, char *val);
-int cfe_write(int handle, unsigned char *buffer, int length);
-int cfe_writeblk(int handle, int64_t offset, unsigned char *buffer,
+int cfe_write(int handle, const char *buffer, int length);
+int cfe_writeblk(int handle, int64_t offset, const char *buffer,
 		 int length);
 
 #endif				/* CFE_API_H */
-- 
1.8.2.1

[PATCH 2/7] MIPS: sibyte: Declare the cfe_write() buffer as constant

[Markos Chandras]

The write() prototype expects a const char * as argument so declare
it as such.

Fixes the following build problem:

arch/mips/sibyte/common/cfe_console.c:23:5: error: passing argument 2 of
'cfe_write' discards 'const' qualifier from pointer target type [-Werror]
arch/mips/sibyte/common/cfe_console.c:34:4: error: passing argument 2 of
'cfe_write' makes pointer from integer without a cast [-Werror]

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Acked-by: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: sibyte-users@bitmover.com
---
 arch/mips/fw/cfe/cfe_api.c             | 4 ++--
 arch/mips/include/asm/fw/cfe/cfe_api.h | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/mips/fw/cfe/cfe_api.c b/arch/mips/fw/cfe/cfe_api.c
index d06dc5a6..cf84f01 100644
--- a/arch/mips/fw/cfe/cfe_api.c
+++ b/arch/mips/fw/cfe/cfe_api.c
@@ -406,12 +406,12 @@ int cfe_setenv(char *name, char *val)
 	return xiocb.xiocb_status;
 }
 
-int cfe_write(int handle, unsigned char *buffer, int length)
+int cfe_write(int handle, const char *buffer, int length)
 {
 	return cfe_writeblk(handle, 0, buffer, length);
 }
 
-int cfe_writeblk(int handle, s64 offset, unsigned char *buffer, int length)
+int cfe_writeblk(int handle, s64 offset, const char *buffer, int length)
 {
 	struct cfe_xiocb xiocb;
 
diff --git a/arch/mips/include/asm/fw/cfe/cfe_api.h b/arch/mips/include/asm/fw/cfe/cfe_api.h
index 1734755..a0ea69e 100644
--- a/arch/mips/include/asm/fw/cfe/cfe_api.h
+++ b/arch/mips/include/asm/fw/cfe/cfe_api.h
@@ -115,8 +115,8 @@ int cfe_read(int handle, unsigned char *buffer, int length);
 int cfe_readblk(int handle, int64_t offset, unsigned char *buffer,
 		int length);
 int cfe_setenv(char *name, char *val);
-int cfe_write(int handle, unsigned char *buffer, int length);
-int cfe_writeblk(int handle, int64_t offset, unsigned char *buffer,
+int cfe_write(int handle, const char *buffer, int length);
+int cfe_writeblk(int handle, int64_t offset, const char *buffer,
 		 int length);
 
 #endif				/* CFE_API_H */
-- 
1.8.2.1

[PATCH 3/7] MIPS: sibyte: Add missing sched.h header

[Markos Chandras]

It's needed for the TASK_INTERRUPTIBLE definition.

Fixes the following build problem:
arch/mips/sibyte/common/sb_tbprof.c:235:4: error: 'TASK_INTERRUPTIBLE'
undeclared (first use in this function)

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Acked-by: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: sibyte-users@bitmover.com
---
 arch/mips/sibyte/common/sb_tbprof.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/mips/sibyte/common/sb_tbprof.c b/arch/mips/sibyte/common/sb_tbprof.c
index 2188b39..059e28c 100644
--- a/arch/mips/sibyte/common/sb_tbprof.c
+++ b/arch/mips/sibyte/common/sb_tbprof.c
@@ -27,6 +27,7 @@
 #include <linux/types.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
+#include <linux/sched.h>
 #include <linux/vmalloc.h>
 #include <linux/fs.h>
 #include <linux/errno.h>
-- 
1.8.2.1

[PATCH 3/7] MIPS: sibyte: Add missing sched.h header

[Markos Chandras]

It's needed for the TASK_INTERRUPTIBLE definition.

Fixes the following build problem:
arch/mips/sibyte/common/sb_tbprof.c:235:4: error: 'TASK_INTERRUPTIBLE'
undeclared (first use in this function)

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Acked-by: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: sibyte-users@bitmover.com
---
 arch/mips/sibyte/common/sb_tbprof.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/mips/sibyte/common/sb_tbprof.c b/arch/mips/sibyte/common/sb_tbprof.c
index 2188b39..059e28c 100644
--- a/arch/mips/sibyte/common/sb_tbprof.c
+++ b/arch/mips/sibyte/common/sb_tbprof.c
@@ -27,6 +27,7 @@
 #include <linux/types.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
+#include <linux/sched.h>
 #include <linux/vmalloc.h>
 #include <linux/fs.h>
 #include <linux/errno.h>
-- 
1.8.2.1

[PATCH 4/7] MIPS: sibyte: Amend dependencies for SIBYTE_BUS_WATCHER

[Markos Chandras]

SIBYTE_BUS_WATCHER is only visible if CONFIG_SIBYTE_BCM112X
or CONFIG_SIBYTE_SB1250 is selected according to the
arch/mips/sibyte/Makefile.
This fixes the following build problem:

arch/mips/mm/cerr-sb1.c:254: undefined reference to `check_bus_watcher'

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Acked-by: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: sibyte-users@bitmover.com
---
 arch/mips/sibyte/Kconfig | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/mips/sibyte/Kconfig b/arch/mips/sibyte/Kconfig
index 01cc1a7..5fbd360 100644
--- a/arch/mips/sibyte/Kconfig
+++ b/arch/mips/sibyte/Kconfig
@@ -147,7 +147,8 @@ config SIBYTE_CFE_CONSOLE
 
 config SIBYTE_BUS_WATCHER
 	bool "Support for Bus Watcher statistics"
-	depends on SIBYTE_SB1xxx_SOC
+	depends on SIBYTE_SB1xxx_SOC && \
+		(SIBYTE_BCM112X || SIBYTE_SB1250)
 	help
 	  Handle and keep statistics on the bus error interrupts (COR_ECC,
 	  BAD_ECC, IO_BUS).
-- 
1.8.2.1

[PATCH 4/7] MIPS: sibyte: Amend dependencies for SIBYTE_BUS_WATCHER

[Markos Chandras]

SIBYTE_BUS_WATCHER is only visible if CONFIG_SIBYTE_BCM112X
or CONFIG_SIBYTE_SB1250 is selected according to the
arch/mips/sibyte/Makefile.
This fixes the following build problem:

arch/mips/mm/cerr-sb1.c:254: undefined reference to `check_bus_watcher'

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Acked-by: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: sibyte-users@bitmover.com
---
 arch/mips/sibyte/Kconfig | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/mips/sibyte/Kconfig b/arch/mips/sibyte/Kconfig
index 01cc1a7..5fbd360 100644
--- a/arch/mips/sibyte/Kconfig
+++ b/arch/mips/sibyte/Kconfig
@@ -147,7 +147,8 @@ config SIBYTE_CFE_CONSOLE
 
 config SIBYTE_BUS_WATCHER
 	bool "Support for Bus Watcher statistics"
-	depends on SIBYTE_SB1xxx_SOC
+	depends on SIBYTE_SB1xxx_SOC && \
+		(SIBYTE_BCM112X || SIBYTE_SB1250)
 	help
 	  Handle and keep statistics on the bus error interrupts (COR_ECC,
 	  BAD_ECC, IO_BUS).
-- 
1.8.2.1

[PATCH 5/7] drivers: watchdog: sb_wdog: Fix 32bit linking problems

[Markos Chandras]

Fixes the following linking problem:
drivers/watchdog/sb_wdog.c:211: undefined reference to `__udivdi3'

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Acked-by: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: sibyte-users@bitmover.com
Cc: Wim Van Sebroeck <wim@iguana.be>
---
 drivers/watchdog/sb_wdog.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/watchdog/sb_wdog.c b/drivers/watchdog/sb_wdog.c
index 25c7a3f..2ea0427 100644
--- a/drivers/watchdog/sb_wdog.c
+++ b/drivers/watchdog/sb_wdog.c
@@ -170,6 +170,7 @@ static long sbwdog_ioctl(struct file *file, unsigned int cmd,
 						unsigned long arg)
 {
 	int ret = -ENOTTY;
+	u64 tmp_user_dog;
 	unsigned long time;
 	void __user *argp = (void __user *)arg;
 	int __user *p = argp;
@@ -208,7 +209,9 @@ static long sbwdog_ioctl(struct file *file, unsigned int cmd,
 		 * get the remaining count from the ... count register
 		 * which is 1*8 before the config register
 		 */
-		ret = put_user(__raw_readq(user_dog - 8) / 1000000, p);
+		tmp_user_dog = __raw_readq(user_dog - 8);
+		tmp_user_dog = do_div(tmp_user_dog, 1000000);
+		ret = put_user(tmp_user_dog, p);
 		break;
 	}
 	return ret;
-- 
1.8.2.1

[PATCH 5/7] drivers: watchdog: sb_wdog: Fix 32bit linking problems

[Markos Chandras]

Fixes the following linking problem:
drivers/watchdog/sb_wdog.c:211: undefined reference to `__udivdi3'

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Acked-by: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: sibyte-users@bitmover.com
Cc: Wim Van Sebroeck <wim@iguana.be>
---
 drivers/watchdog/sb_wdog.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/watchdog/sb_wdog.c b/drivers/watchdog/sb_wdog.c
index 25c7a3f..2ea0427 100644
--- a/drivers/watchdog/sb_wdog.c
+++ b/drivers/watchdog/sb_wdog.c
@@ -170,6 +170,7 @@ static long sbwdog_ioctl(struct file *file, unsigned int cmd,
 						unsigned long arg)
 {
 	int ret = -ENOTTY;
+	u64 tmp_user_dog;
 	unsigned long time;
 	void __user *argp = (void __user *)arg;
 	int __user *p = argp;
@@ -208,7 +209,9 @@ static long sbwdog_ioctl(struct file *file, unsigned int cmd,
 		 * get the remaining count from the ... count register
 		 * which is 1*8 before the config register
 		 */
-		ret = put_user(__raw_readq(user_dog - 8) / 1000000, p);
+		tmp_user_dog = __raw_readq(user_dog - 8);
+		tmp_user_dog = do_div(tmp_user_dog, 1000000);
+		ret = put_user(tmp_user_dog, p);
 		break;
 	}
 	return ret;
-- 
1.8.2.1

[PATCH 6/7] drivers: ssb: Kconfig: Amend SSB_EMBEDDED dependencies

[Markos Chandras]

SSB_EMBEDDED needs functions from driver_pcicore which are only
available if SSD_DRIVER_HOSTMODE is selected so make it
depend on that symbol.

Fixes the following linking problem:

drivers/ssb/embedded.c:202:
undefined reference to `ssb_pcicore_plat_dev_init'
drivers/built-in.o: In function `ssb_pcibios_map_irq':
drivers/ssb/embedded.c:247:
undefined reference to `ssb_pcicore_pcibios_map_irq'

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Acked-by: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: sibyte-users@bitmover.com
Cc: netdev@vger.kernel.org
Cc: Michael Buesch <m@bues.ch>
---
 drivers/ssb/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/ssb/Kconfig b/drivers/ssb/Kconfig
index 5ff3a4f..36171fd 100644
--- a/drivers/ssb/Kconfig
+++ b/drivers/ssb/Kconfig
@@ -144,7 +144,7 @@ config SSB_SFLASH
 # Assumption: We are on embedded, if we compile the MIPS core.
 config SSB_EMBEDDED
 	bool
-	depends on SSB_DRIVER_MIPS
+	depends on SSB_DRIVER_MIPS && SSB_PCICORE_HOSTMODE
 	default y
 
 config SSB_DRIVER_EXTIF
-- 
1.8.2.1

[PATCH 6/7] drivers: ssb: Kconfig: Amend SSB_EMBEDDED dependencies

[Markos Chandras]

SSB_EMBEDDED needs functions from driver_pcicore which are only
available if SSD_DRIVER_HOSTMODE is selected so make it
depend on that symbol.

Fixes the following linking problem:

drivers/ssb/embedded.c:202:
undefined reference to `ssb_pcicore_plat_dev_init'
drivers/built-in.o: In function `ssb_pcibios_map_irq':
drivers/ssb/embedded.c:247:
undefined reference to `ssb_pcicore_pcibios_map_irq'

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Acked-by: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: sibyte-users@bitmover.com
Cc: netdev@vger.kernel.org
Cc: Michael Buesch <m@bues.ch>
---
 drivers/ssb/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/ssb/Kconfig b/drivers/ssb/Kconfig
index 5ff3a4f..36171fd 100644
--- a/drivers/ssb/Kconfig
+++ b/drivers/ssb/Kconfig
@@ -144,7 +144,7 @@ config SSB_SFLASH
 # Assumption: We are on embedded, if we compile the MIPS core.
 config SSB_EMBEDDED
 	bool
-	depends on SSB_DRIVER_MIPS
+	depends on SSB_DRIVER_MIPS && SSB_PCICORE_HOSTMODE
 	default y
 
 config SSB_DRIVER_EXTIF
-- 
1.8.2.1

[PATCH 7/7] MIPS: sibyte: Remove unused variable.

[Markos Chandras]

Fixes the following build problem:

arch/mips/sibyte/sb1250/bus_watcher.c: In function 'sibyte_bw_int':
arch/mips/sibyte/sb1250/bus_watcher.c:179:7: error: unused variable 'bw_buf'
[-Werror=unused-variable]

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: sibyte-users@bitmover.com
---
 arch/mips/sibyte/sb1250/bus_watcher.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/arch/mips/sibyte/sb1250/bus_watcher.c b/arch/mips/sibyte/sb1250/bus_watcher.c
index 8871e33..d0ca7b9 100644
--- a/arch/mips/sibyte/sb1250/bus_watcher.c
+++ b/arch/mips/sibyte/sb1250/bus_watcher.c
@@ -175,9 +175,6 @@ static irqreturn_t sibyte_bw_int(int irq, void *data)
 #ifdef CONFIG_SIBYTE_BW_TRACE
 	int i;
 #endif
-#ifndef CONFIG_PROC_FS
-	char bw_buf[1024];
-#endif
 
 #ifdef CONFIG_SIBYTE_BW_TRACE
 	csr_out32(M_SCD_TRACE_CFG_FREEZE, IOADDR(A_SCD_TRACE_CFG));
-- 
1.8.2.1

[PATCH 7/7] MIPS: sibyte: Remove unused variable.

[Markos Chandras]

Fixes the following build problem:

arch/mips/sibyte/sb1250/bus_watcher.c: In function 'sibyte_bw_int':
arch/mips/sibyte/sb1250/bus_watcher.c:179:7: error: unused variable 'bw_buf'
[-Werror=unused-variable]

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: sibyte-users@bitmover.com
---
 arch/mips/sibyte/sb1250/bus_watcher.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/arch/mips/sibyte/sb1250/bus_watcher.c b/arch/mips/sibyte/sb1250/bus_watcher.c
index 8871e33..d0ca7b9 100644
--- a/arch/mips/sibyte/sb1250/bus_watcher.c
+++ b/arch/mips/sibyte/sb1250/bus_watcher.c
@@ -175,9 +175,6 @@ static irqreturn_t sibyte_bw_int(int irq, void *data)
 #ifdef CONFIG_SIBYTE_BW_TRACE
 	int i;
 #endif
-#ifndef CONFIG_PROC_FS
-	char bw_buf[1024];
-#endif
 
 #ifdef CONFIG_SIBYTE_BW_TRACE
 	csr_out32(M_SCD_TRACE_CFG_FREEZE, IOADDR(A_SCD_TRACE_CFG));
-- 
1.8.2.1

Re: [PATCH 3/7] MIPS: sibyte: Add missing sched.h header

[Ralf Baechle]

On Mon, Jun 17, 2013 at 03:00:37PM +0100, Markos Chandras wrote:

> It's needed for the TASK_INTERRUPTIBLE definition.
> 
> Fixes the following build problem:
> arch/mips/sibyte/common/sb_tbprof.c:235:4: error: 'TASK_INTERRUPTIBLE'
> undeclared (first use in this function)

Ideally sched.h should be included into the actual user of
TASK_INTERRUPTIBLE, the wake_up_interruptible macro in <linux/wait.h> but
that seems way too risky that close to a release.

  Ralf

Re: [PATCH 5/7] drivers: watchdog: sb_wdog: Fix 32bit linking problems

[Ralf Baechle]

On Mon, Jun 17, 2013 at 03:00:39PM +0100, Markos Chandras wrote:

> Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
> Acked-by: Steven J. Hill <Steven.Hill@imgtec.com>
> Cc: sibyte-users@bitmover.com
> Cc: Wim Van Sebroeck <wim@iguana.be>
> ---
>  drivers/watchdog/sb_wdog.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/watchdog/sb_wdog.c b/drivers/watchdog/sb_wdog.c
> index 25c7a3f..2ea0427 100644
> --- a/drivers/watchdog/sb_wdog.c
> +++ b/drivers/watchdog/sb_wdog.c
> @@ -170,6 +170,7 @@ static long sbwdog_ioctl(struct file *file, unsigned int cmd,
>  						unsigned long arg)
>  {
>  	int ret = -ENOTTY;
> +	u64 tmp_user_dog;
>  	unsigned long time;
>  	void __user *argp = (void __user *)arg;
>  	int __user *p = argp;
> @@ -208,7 +209,9 @@ static long sbwdog_ioctl(struct file *file, unsigned int cmd,
>  		 * get the remaining count from the ... count register
>  		 * which is 1*8 before the config register
>  		 */
> -		ret = put_user(__raw_readq(user_dog - 8) / 1000000, p);
> +		tmp_user_dog = __raw_readq(user_dog - 8);
> +		tmp_user_dog = do_div(tmp_user_dog, 1000000);
> +		ret = put_user(tmp_user_dog, p);

In effect the code with your change now does:

		ret = put_user(__raw_readq(user_dog - 8) % 1000000, p);

No good.

		tmp_user_dog = __raw_readq(user_dog - 8);
		do_div(tmp_user_dog, 1000000);
		ret = put_user(tmp_user_dog, p);

Should to the right thing.

I'm not surprised you're finding bugs in 32 bit Sibyte kernel.  At heart,
the Sibyte SOCs are 64 bit and their architecture limits them to support
256MB memory with a 32 bit kernel without highmem.  Highmem though
supported is stupid and leaves as the only sane option 64 bit kernels
and virtually every user has done that, not last to get full fp performance
which is only available with the N32 / N64 ABIs.  Oh, and of course many
registers need to be accessed 64 bit wide, which on a 32 bit kernel
requires a local_irq_disable ...  local_irq_enable around the actual
access.

In short, nobody but a few diehard backward folks have ever been using
32 bit kernels on Sibyte hardware, so finding such an issue is not really
a surprise.

  Ralf

Re: [PATCH 3/7] MIPS: sibyte: Add missing sched.h header

[Peter Zijlstra]

On Mon, Jun 17, 2013 at 06:44:27PM +0200, Ralf Baechle wrote:
> On Mon, Jun 17, 2013 at 03:00:37PM +0100, Markos Chandras wrote:
> 
> > It's needed for the TASK_INTERRUPTIBLE definition.
> > 
> > Fixes the following build problem:
> > arch/mips/sibyte/common/sb_tbprof.c:235:4: error: 'TASK_INTERRUPTIBLE'
> > undeclared (first use in this function)
> 
> Ideally sched.h should be included into the actual user of
> TASK_INTERRUPTIBLE, the wake_up_interruptible macro in <linux/wait.h> but
> that seems way too risky that close to a release.

Oh man, there's include recursion hell waiting for you ;-)

Re: [PATCH 5/7] drivers: watchdog: sb_wdog: Fix 32bit linking problems

[Markos Chandras]

On 17 June 2013 18:03, Ralf Baechle <ralf@linux-mips.org> wrote:
>> @@ -208,7 +209,9 @@ static long sbwdog_ioctl(struct file *file, unsigned int cmd,
>>                * get the remaining count from the ... count register
>>                * which is 1*8 before the config register
>>                */
>> -             ret = put_user(__raw_readq(user_dog - 8) / 1000000, p);
>> +             tmp_user_dog = __raw_readq(user_dog - 8);
>> +             tmp_user_dog = do_div(tmp_user_dog, 1000000);
>> +             ret = put_user(tmp_user_dog, p);
>
> In effect the code with your change now does:
>
>                 ret = put_user(__raw_readq(user_dog - 8) % 1000000, p);
>
> No good.
>
>                 tmp_user_dog = __raw_readq(user_dog - 8);
>                 do_div(tmp_user_dog, 1000000);
>                 ret = put_user(tmp_user_dog, p);
>
> Should to the right thing.
>

Hi Ralf,

Yes you are right. I will submit a new patch.

--
Regards,
Markos Chandras

Re: [PATCH 1/7] MIPS: sibyte: Fix build for SIBYTE_BW_TRACE

[Ralf Baechle]

On Mon, Jun 17, 2013 at 03:00:35PM +0100, Markos Chandras wrote:

> The M_BCM1480_SCD_TRACE_CFG_FREEZE macro removed in
> 8deab1144b553548fb2f1b51affdd36dcd652aaa
> "[MIPS] Updated Sibyte headers"
> 
> This broke the build for the sibyte platfrom when
> SIBYTE_BW_TRACE is enabled:
> arch/mips/mm/cerr-sb1.c:186:2: error: 'M_BCM1480_SCD_TRACE_CFG_FREEZE'
> undeclared (first use in this function)
> 
> We fix this by replacing it with the M_BCM1480_SYS_RESERVED4 macro
> 
> Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
> Acked-by: Steven J. Hill <Steven.Hill@imgtec.com>
> Cc: sibyte-users@bitmover.com
> ---
>  arch/mips/mm/cerr-sb1.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/mips/mm/cerr-sb1.c b/arch/mips/mm/cerr-sb1.c
> index 576add3..1a24534 100644
> --- a/arch/mips/mm/cerr-sb1.c
> +++ b/arch/mips/mm/cerr-sb1.c
> @@ -183,7 +183,7 @@ asmlinkage void sb1_cache_error(void)
>  #ifdef CONFIG_SIBYTE_BW_TRACE
>  	/* Freeze the trace buffer now */
>  #if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80)
> -	csr_out32(M_BCM1480_SCD_TRACE_CFG_FREEZE, IOADDR(A_SCD_TRACE_CFG));
> +	csr_out32(M_BCM1480_SYS_RESERVED4, IOADDR(A_SCD_TRACE_CFG));
>  #else
>  	csr_out32(M_SCD_TRACE_CFG_FREEZE, IOADDR(A_SCD_TRACE_CFG));
>  #endif

I think this is the correct solution.

Unfortunately nobody at Broadcom seems to care about the Sibyte SOCs
these days though they're still very important for a bunch of Linux
distributions.

  Ralf

  CC      arch/mips/mm/cerr-sb1.o
arch/mips/mm/cerr-sb1.c: In function ‘sb1_cache_error’:
arch/mips/mm/cerr-sb1.c:186:98: error: ‘M_BCM1480_SCD_TRACE_CFG_FREEZE’ undeclared (first use in this function)
arch/mips/mm/cerr-sb1.c:186:98: note: each undeclared identifier is reported only once for each function it appears in
make[1]: *** [arch/mips/mm/cerr-sb1.o] Error 1

This happens because 8deab1144b553548fb2f1b51affdd36dcd652aaa [[MIPS]
Updated Sibyte headers] changed the headers but not all the users.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Reported-by: Markos Chandras <markos.chandras@imgtec.com>
---
 arch/mips/mm/cerr-sb1.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/arch/mips/mm/cerr-sb1.c b/arch/mips/mm/cerr-sb1.c
index 576add3..ee5c1ff 100644
--- a/arch/mips/mm/cerr-sb1.c
+++ b/arch/mips/mm/cerr-sb1.c
@@ -182,11 +182,7 @@ asmlinkage void sb1_cache_error(void)
 
 #ifdef CONFIG_SIBYTE_BW_TRACE
 	/* Freeze the trace buffer now */
-#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80)
-	csr_out32(M_BCM1480_SCD_TRACE_CFG_FREEZE, IOADDR(A_SCD_TRACE_CFG));
-#else
 	csr_out32(M_SCD_TRACE_CFG_FREEZE, IOADDR(A_SCD_TRACE_CFG));
-#endif
 	printk("Trace buffer frozen\n");
 #endif
 

Re: [PATCH 4/7] MIPS: sibyte: Amend dependencies for SIBYTE_BUS_WATCHER

[Ralf Baechle]

On Mon, Jun 17, 2013 at 03:00:38PM +0100, Markos Chandras wrote:

> SIBYTE_BUS_WATCHER is only visible if CONFIG_SIBYTE_BCM112X
> or CONFIG_SIBYTE_SB1250 is selected according to the
> arch/mips/sibyte/Makefile.
> This fixes the following build problem:
> 
> arch/mips/mm/cerr-sb1.c:254: undefined reference to `check_bus_watcher'

I originally had applied this patch but now I'm removing it again.  The
real culprit is that the Sibyte bus watcher code is hidden in the
sb1250/ subdirectory where builds for the later BCM 1x55 and 1x80 SOC
generations won't pick it up, thus this errors.

Below patch moves the code to the generic directory and does minor
modifications to actually get the code to work.

Thanks anyway!

  Ralf

  CC      arch/mips/sibyte/bcm1480/bus_watcher.o
  CHK     kernel/config_data.h
arch/mips/sibyte/bcm1480/bus_watcher.c: In function ‘check_bus_watcher’:
arch/mips/sibyte/bcm1480/bus_watcher.c:86:82: error: ‘A_SCD_BUS_ERR_STATUS_DEBUG’ undeclared (first use in this function)
arch/mips/sibyte/bcm1480/bus_watcher.c:86:82: note: each undeclared identifier is reported only once for each function it appears in
make[3]: *** [arch/mips/sibyte/bcm1480/bus_watcher.o] Error 1
make[2]: *** [arch/mips/sibyte/bcm1480] Error 2
make[1]: *** [arch/mips/sibyte] Error 2
make: *** [arch/mips] Error 2

The register moved around though it's otherwise the same but because of
the changed address it now also has a different name.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Reported-by: Markos Chandras <markos.chandras@imgtec.com>
---
 arch/mips/sibyte/common/Makefile      |   1 +
 arch/mips/sibyte/common/bus_watcher.c | 256 ++++++++++++++++++++++++++++++++++
 arch/mips/sibyte/sb1250/Makefile      |   1 -
 arch/mips/sibyte/sb1250/bus_watcher.c | 247 --------------------------------
 4 files changed, 257 insertions(+), 248 deletions(-)

diff --git a/arch/mips/sibyte/common/Makefile b/arch/mips/sibyte/common/Makefile
index 36aa700..b3d6bf2 100644
--- a/arch/mips/sibyte/common/Makefile
+++ b/arch/mips/sibyte/common/Makefile
@@ -1,3 +1,4 @@
 obj-y := cfe.o
+obj-$(CONFIG_SIBYTE_BUS_WATCHER)	+= bus_watcher.o
 obj-$(CONFIG_SIBYTE_CFE_CONSOLE)	+= cfe_console.o
 obj-$(CONFIG_SIBYTE_TBPROF)		+= sb_tbprof.o
diff --git a/arch/mips/sibyte/common/bus_watcher.c b/arch/mips/sibyte/common/bus_watcher.c
new file mode 100644
index 0000000..5581844
--- /dev/null
+++ b/arch/mips/sibyte/common/bus_watcher.c
@@ -0,0 +1,256 @@
+/*
+ * Copyright (C) 2002,2003 Broadcom Corporation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * 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.
+ */
+
+/*
+ * The Bus Watcher monitors internal bus transactions and maintains
+ * counts of transactions with error status, logging details and
+ * causing one of several interrupts.  This driver provides a handler
+ * for those interrupts which aggregates the counts (to avoid
+ * saturating the 8-bit counters) and provides a presence in
+ * /proc/bus_watcher if PROC_FS is on.
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/sched.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <asm/io.h>
+
+#include <asm/sibyte/sb1250.h>
+#include <asm/sibyte/sb1250_regs.h>
+#include <asm/sibyte/sb1250_int.h>
+#include <asm/sibyte/sb1250_scd.h>
+#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80)
+#include <asm/sibyte/bcm1480_regs.h>
+#endif
+
+
+struct bw_stats_struct {
+	uint64_t status;
+	uint32_t l2_err;
+	uint32_t memio_err;
+	int status_printed;
+	unsigned long l2_cor_d;
+	unsigned long l2_bad_d;
+	unsigned long l2_cor_t;
+	unsigned long l2_bad_t;
+	unsigned long mem_cor_d;
+	unsigned long mem_bad_d;
+	unsigned long bus_error;
+} bw_stats;
+
+
+static void print_summary(uint32_t status, uint32_t l2_err,
+			  uint32_t memio_err)
+{
+	printk("Bus watcher error counters: %08x %08x\n", l2_err, memio_err);
+	printk("\nLast recorded signature:\n");
+	printk("Request %02x from %d, answered by %d with Dcode %d\n",
+	       (unsigned int)(G_SCD_BERR_TID(status) & 0x3f),
+	       (int)(G_SCD_BERR_TID(status) >> 6),
+	       (int)G_SCD_BERR_RID(status),
+	       (int)G_SCD_BERR_DCODE(status));
+}
+
+/*
+ * check_bus_watcher is exported for use in situations where we want
+ * to see the most recent status of the bus watcher, which might have
+ * already been destructively read out of the registers.
+ *
+ * notes: this is currently used by the cache error handler
+ *	  should provide locking against the interrupt handler
+ */
+void check_bus_watcher(void)
+{
+	u32 status, l2_err, memio_err;
+
+#ifdef CONFIG_SB1_PASS_1_WORKAROUNDS
+	/* Destructive read, clears register and interrupt */
+	status = csr_in32(IOADDR(A_SCD_BUS_ERR_STATUS));
+#elif defined(CONFIG_SIBYTE_BCM112X) || defined(CONFIG_SIBYTE_SB1250)
+	/* Use non-destructive register */
+	status = csr_in32(IOADDR(A_SCD_BUS_ERR_STATUS_DEBUG));
+#elif defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80)
+	/* Use non-destructive register */
+	/* Same as 1250 except BUS_ERR_STATUS_DEBUG is in a different place. */
+	status = csr_in32(IOADDR(A_BCM1480_BUS_ERR_STATUS_DEBUG));
+#else
+#error bus watcher being built for unknown Sibyte SOC!
+#endif
+	if (!(status & 0x7fffffff)) {
+		printk("Using last values reaped by bus watcher driver\n");
+		status = bw_stats.status;
+		l2_err = bw_stats.l2_err;
+		memio_err = bw_stats.memio_err;
+	} else {
+		l2_err = csr_in32(IOADDR(A_BUS_L2_ERRORS));
+		memio_err = csr_in32(IOADDR(A_BUS_MEM_IO_ERRORS));
+	}
+	if (status & ~(1UL << 31))
+		print_summary(status, l2_err, memio_err);
+	else
+		printk("Bus watcher indicates no error\n");
+}
+
+#ifdef CONFIG_PROC_FS
+
+/* For simplicity, I want to assume a single read is required each
+   time */
+static int bw_proc_show(struct seq_file *m, void *v)
+{
+	struct bw_stats_struct *stats = m->private;
+
+	seq_puts(m, "SiByte Bus Watcher statistics\n");
+	seq_puts(m, "-----------------------------\n");
+	seq_printf(m, "L2-d-cor %8ld\nL2-d-bad %8ld\n",
+		   stats->l2_cor_d, stats->l2_bad_d);
+	seq_printf(m, "L2-t-cor %8ld\nL2-t-bad %8ld\n",
+		   stats->l2_cor_t, stats->l2_bad_t);
+	seq_printf(m, "MC-d-cor %8ld\nMC-d-bad %8ld\n",
+		   stats->mem_cor_d, stats->mem_bad_d);
+	seq_printf(m, "IO-err   %8ld\n", stats->bus_error);
+	seq_puts(m, "\nLast recorded signature:\n");
+	seq_printf(m, "Request %02x from %d, answered by %d with Dcode %d\n",
+		   (unsigned int)(G_SCD_BERR_TID(stats->status) & 0x3f),
+		   (int)(G_SCD_BERR_TID(stats->status) >> 6),
+		   (int)G_SCD_BERR_RID(stats->status),
+		   (int)G_SCD_BERR_DCODE(stats->status));
+	/* XXXKW indicate multiple errors between printings, or stats
+	   collection (or both)? */
+	if (stats->status & M_SCD_BERR_MULTERRS)
+		seq_puts(m, "Multiple errors observed since last check.\n");
+	if (stats->status_printed) {
+		seq_puts(m, "(no change since last printing)\n");
+	} else {
+		stats->status_printed = 1;
+	}
+
+	return 0;
+}
+
+static int bw_proc_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, bw_proc_show, PDE_DATA(inode));
+}
+
+static const struct file_operations bw_proc_fops = {
+	.open		= bw_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
+static void create_proc_decoder(struct bw_stats_struct *stats)
+{
+	struct proc_dir_entry *ent;
+
+	ent = proc_create_data("bus_watcher", S_IWUSR | S_IRUGO, NULL,
+			       &bw_proc_fops, stats);
+	if (!ent) {
+		printk(KERN_INFO "Unable to initialize bus_watcher /proc entry\n");
+		return;
+	}
+}
+
+#endif /* CONFIG_PROC_FS */
+
+/*
+ * sibyte_bw_int - handle bus watcher interrupts and accumulate counts
+ *
+ * notes: possible re-entry due to multiple sources
+ *	  should check/indicate saturation
+ */
+static irqreturn_t sibyte_bw_int(int irq, void *data)
+{
+	struct bw_stats_struct *stats = data;
+	unsigned long cntr;
+#ifdef CONFIG_SIBYTE_BW_TRACE
+	int i;
+#endif
+
+#ifdef CONFIG_SIBYTE_BW_TRACE
+	csr_out32(M_SCD_TRACE_CFG_FREEZE, IOADDR(A_SCD_TRACE_CFG));
+	csr_out32(M_SCD_TRACE_CFG_START_READ, IOADDR(A_SCD_TRACE_CFG));
+
+	for (i=0; i<256*6; i++)
+		printk("%016llx\n",
+		       (long long)__raw_readq(IOADDR(A_SCD_TRACE_READ)));
+
+	csr_out32(M_SCD_TRACE_CFG_RESET, IOADDR(A_SCD_TRACE_CFG));
+	csr_out32(M_SCD_TRACE_CFG_START, IOADDR(A_SCD_TRACE_CFG));
+#endif
+
+	/* Destructive read, clears register and interrupt */
+	stats->status = csr_in32(IOADDR(A_SCD_BUS_ERR_STATUS));
+	stats->status_printed = 0;
+
+	stats->l2_err = cntr = csr_in32(IOADDR(A_BUS_L2_ERRORS));
+	stats->l2_cor_d += G_SCD_L2ECC_CORR_D(cntr);
+	stats->l2_bad_d += G_SCD_L2ECC_BAD_D(cntr);
+	stats->l2_cor_t += G_SCD_L2ECC_CORR_T(cntr);
+	stats->l2_bad_t += G_SCD_L2ECC_BAD_T(cntr);
+	csr_out32(0, IOADDR(A_BUS_L2_ERRORS));
+
+	stats->memio_err = cntr = csr_in32(IOADDR(A_BUS_MEM_IO_ERRORS));
+	stats->mem_cor_d += G_SCD_MEM_ECC_CORR(cntr);
+	stats->mem_bad_d += G_SCD_MEM_ECC_BAD(cntr);
+	stats->bus_error += G_SCD_MEM_BUSERR(cntr);
+	csr_out32(0, IOADDR(A_BUS_MEM_IO_ERRORS));
+
+	return IRQ_HANDLED;
+}
+
+int __init sibyte_bus_watcher(void)
+{
+	memset(&bw_stats, 0, sizeof(struct bw_stats_struct));
+	bw_stats.status_printed = 1;
+
+	if (request_irq(K_INT_BAD_ECC, sibyte_bw_int, 0, "Bus watcher", &bw_stats)) {
+		printk("Failed to register bus watcher BAD_ECC irq\n");
+		return -1;
+	}
+	if (request_irq(K_INT_COR_ECC, sibyte_bw_int, 0, "Bus watcher", &bw_stats)) {
+		free_irq(K_INT_BAD_ECC, &bw_stats);
+		printk("Failed to register bus watcher COR_ECC irq\n");
+		return -1;
+	}
+	if (request_irq(K_INT_IO_BUS, sibyte_bw_int, 0, "Bus watcher", &bw_stats)) {
+		free_irq(K_INT_BAD_ECC, &bw_stats);
+		free_irq(K_INT_COR_ECC, &bw_stats);
+		printk("Failed to register bus watcher IO_BUS irq\n");
+		return -1;
+	}
+
+#ifdef CONFIG_PROC_FS
+	create_proc_decoder(&bw_stats);
+#endif
+
+#ifdef CONFIG_SIBYTE_BW_TRACE
+	csr_out32((M_SCD_TRSEQ_ASAMPLE | M_SCD_TRSEQ_DSAMPLE |
+		   K_SCD_TRSEQ_TRIGGER_ALL),
+		  IOADDR(A_SCD_TRACE_SEQUENCE_0));
+	csr_out32(M_SCD_TRACE_CFG_RESET, IOADDR(A_SCD_TRACE_CFG));
+	csr_out32(M_SCD_TRACE_CFG_START, IOADDR(A_SCD_TRACE_CFG));
+#endif
+
+	return 0;
+}
+
+__initcall(sibyte_bus_watcher);
diff --git a/arch/mips/sibyte/sb1250/Makefile b/arch/mips/sibyte/sb1250/Makefile
index d3d969d..cdc4c56 100644
--- a/arch/mips/sibyte/sb1250/Makefile
+++ b/arch/mips/sibyte/sb1250/Makefile
@@ -1,4 +1,3 @@
 obj-y := setup.o irq.o time.o
 
 obj-$(CONFIG_SMP)			+= smp.o
-obj-$(CONFIG_SIBYTE_BUS_WATCHER)	+= bus_watcher.o
diff --git a/arch/mips/sibyte/sb1250/bus_watcher.c b/arch/mips/sibyte/sb1250/bus_watcher.c
deleted file mode 100644
index d0ca7b9..0000000
--- a/arch/mips/sibyte/sb1250/bus_watcher.c
+++ /dev/null
@@ -1,247 +0,0 @@
-/*
- * Copyright (C) 2002,2003 Broadcom Corporation
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * 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.
- */
-
-/*
- * The Bus Watcher monitors internal bus transactions and maintains
- * counts of transactions with error status, logging details and
- * causing one of several interrupts.  This driver provides a handler
- * for those interrupts which aggregates the counts (to avoid
- * saturating the 8-bit counters) and provides a presence in
- * /proc/bus_watcher if PROC_FS is on.
- */
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/interrupt.h>
-#include <linux/sched.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-#include <asm/io.h>
-
-#include <asm/sibyte/sb1250.h>
-#include <asm/sibyte/sb1250_regs.h>
-#include <asm/sibyte/sb1250_int.h>
-#include <asm/sibyte/sb1250_scd.h>
-
-
-struct bw_stats_struct {
-	uint64_t status;
-	uint32_t l2_err;
-	uint32_t memio_err;
-	int status_printed;
-	unsigned long l2_cor_d;
-	unsigned long l2_bad_d;
-	unsigned long l2_cor_t;
-	unsigned long l2_bad_t;
-	unsigned long mem_cor_d;
-	unsigned long mem_bad_d;
-	unsigned long bus_error;
-} bw_stats;
-
-
-static void print_summary(uint32_t status, uint32_t l2_err,
-			  uint32_t memio_err)
-{
-	printk("Bus watcher error counters: %08x %08x\n", l2_err, memio_err);
-	printk("\nLast recorded signature:\n");
-	printk("Request %02x from %d, answered by %d with Dcode %d\n",
-	       (unsigned int)(G_SCD_BERR_TID(status) & 0x3f),
-	       (int)(G_SCD_BERR_TID(status) >> 6),
-	       (int)G_SCD_BERR_RID(status),
-	       (int)G_SCD_BERR_DCODE(status));
-}
-
-/*
- * check_bus_watcher is exported for use in situations where we want
- * to see the most recent status of the bus watcher, which might have
- * already been destructively read out of the registers.
- *
- * notes: this is currently used by the cache error handler
- *	  should provide locking against the interrupt handler
- */
-void check_bus_watcher(void)
-{
-	u32 status, l2_err, memio_err;
-
-#ifdef CONFIG_SB1_PASS_1_WORKAROUNDS
-	/* Destructive read, clears register and interrupt */
-	status = csr_in32(IOADDR(A_SCD_BUS_ERR_STATUS));
-#else
-	/* Use non-destructive register */
-	status = csr_in32(IOADDR(A_SCD_BUS_ERR_STATUS_DEBUG));
-#endif
-	if (!(status & 0x7fffffff)) {
-		printk("Using last values reaped by bus watcher driver\n");
-		status = bw_stats.status;
-		l2_err = bw_stats.l2_err;
-		memio_err = bw_stats.memio_err;
-	} else {
-		l2_err = csr_in32(IOADDR(A_BUS_L2_ERRORS));
-		memio_err = csr_in32(IOADDR(A_BUS_MEM_IO_ERRORS));
-	}
-	if (status & ~(1UL << 31))
-		print_summary(status, l2_err, memio_err);
-	else
-		printk("Bus watcher indicates no error\n");
-}
-
-#ifdef CONFIG_PROC_FS
-
-/* For simplicity, I want to assume a single read is required each
-   time */
-static int bw_proc_show(struct seq_file *m, void *v)
-{
-	struct bw_stats_struct *stats = m->private;
-
-	seq_puts(m, "SiByte Bus Watcher statistics\n");
-	seq_puts(m, "-----------------------------\n");
-	seq_printf(m, "L2-d-cor %8ld\nL2-d-bad %8ld\n",
-		   stats->l2_cor_d, stats->l2_bad_d);
-	seq_printf(m, "L2-t-cor %8ld\nL2-t-bad %8ld\n",
-		   stats->l2_cor_t, stats->l2_bad_t);
-	seq_printf(m, "MC-d-cor %8ld\nMC-d-bad %8ld\n",
-		   stats->mem_cor_d, stats->mem_bad_d);
-	seq_printf(m, "IO-err   %8ld\n", stats->bus_error);
-	seq_puts(m, "\nLast recorded signature:\n");
-	seq_printf(m, "Request %02x from %d, answered by %d with Dcode %d\n",
-		   (unsigned int)(G_SCD_BERR_TID(stats->status) & 0x3f),
-		   (int)(G_SCD_BERR_TID(stats->status) >> 6),
-		   (int)G_SCD_BERR_RID(stats->status),
-		   (int)G_SCD_BERR_DCODE(stats->status));
-	/* XXXKW indicate multiple errors between printings, or stats
-	   collection (or both)? */
-	if (stats->status & M_SCD_BERR_MULTERRS)
-		seq_puts(m, "Multiple errors observed since last check.\n");
-	if (stats->status_printed) {
-		seq_puts(m, "(no change since last printing)\n");
-	} else {
-		stats->status_printed = 1;
-	}
-
-	return 0;
-}
-
-static int bw_proc_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, bw_proc_show, PDE_DATA(inode));
-}
-
-static const struct file_operations bw_proc_fops = {
-	.open		= bw_proc_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= single_release,
-};
-
-static void create_proc_decoder(struct bw_stats_struct *stats)
-{
-	struct proc_dir_entry *ent;
-
-	ent = proc_create_data("bus_watcher", S_IWUSR | S_IRUGO, NULL,
-			       &bw_proc_fops, stats);
-	if (!ent) {
-		printk(KERN_INFO "Unable to initialize bus_watcher /proc entry\n");
-		return;
-	}
-}
-
-#endif /* CONFIG_PROC_FS */
-
-/*
- * sibyte_bw_int - handle bus watcher interrupts and accumulate counts
- *
- * notes: possible re-entry due to multiple sources
- *	  should check/indicate saturation
- */
-static irqreturn_t sibyte_bw_int(int irq, void *data)
-{
-	struct bw_stats_struct *stats = data;
-	unsigned long cntr;
-#ifdef CONFIG_SIBYTE_BW_TRACE
-	int i;
-#endif
-
-#ifdef CONFIG_SIBYTE_BW_TRACE
-	csr_out32(M_SCD_TRACE_CFG_FREEZE, IOADDR(A_SCD_TRACE_CFG));
-	csr_out32(M_SCD_TRACE_CFG_START_READ, IOADDR(A_SCD_TRACE_CFG));
-
-	for (i=0; i<256*6; i++)
-		printk("%016llx\n",
-		       (long long)__raw_readq(IOADDR(A_SCD_TRACE_READ)));
-
-	csr_out32(M_SCD_TRACE_CFG_RESET, IOADDR(A_SCD_TRACE_CFG));
-	csr_out32(M_SCD_TRACE_CFG_START, IOADDR(A_SCD_TRACE_CFG));
-#endif
-
-	/* Destructive read, clears register and interrupt */
-	stats->status = csr_in32(IOADDR(A_SCD_BUS_ERR_STATUS));
-	stats->status_printed = 0;
-
-	stats->l2_err = cntr = csr_in32(IOADDR(A_BUS_L2_ERRORS));
-	stats->l2_cor_d += G_SCD_L2ECC_CORR_D(cntr);
-	stats->l2_bad_d += G_SCD_L2ECC_BAD_D(cntr);
-	stats->l2_cor_t += G_SCD_L2ECC_CORR_T(cntr);
-	stats->l2_bad_t += G_SCD_L2ECC_BAD_T(cntr);
-	csr_out32(0, IOADDR(A_BUS_L2_ERRORS));
-
-	stats->memio_err = cntr = csr_in32(IOADDR(A_BUS_MEM_IO_ERRORS));
-	stats->mem_cor_d += G_SCD_MEM_ECC_CORR(cntr);
-	stats->mem_bad_d += G_SCD_MEM_ECC_BAD(cntr);
-	stats->bus_error += G_SCD_MEM_BUSERR(cntr);
-	csr_out32(0, IOADDR(A_BUS_MEM_IO_ERRORS));
-
-	return IRQ_HANDLED;
-}
-
-int __init sibyte_bus_watcher(void)
-{
-	memset(&bw_stats, 0, sizeof(struct bw_stats_struct));
-	bw_stats.status_printed = 1;
-
-	if (request_irq(K_INT_BAD_ECC, sibyte_bw_int, 0, "Bus watcher", &bw_stats)) {
-		printk("Failed to register bus watcher BAD_ECC irq\n");
-		return -1;
-	}
-	if (request_irq(K_INT_COR_ECC, sibyte_bw_int, 0, "Bus watcher", &bw_stats)) {
-		free_irq(K_INT_BAD_ECC, &bw_stats);
-		printk("Failed to register bus watcher COR_ECC irq\n");
-		return -1;
-	}
-	if (request_irq(K_INT_IO_BUS, sibyte_bw_int, 0, "Bus watcher", &bw_stats)) {
-		free_irq(K_INT_BAD_ECC, &bw_stats);
-		free_irq(K_INT_COR_ECC, &bw_stats);
-		printk("Failed to register bus watcher IO_BUS irq\n");
-		return -1;
-	}
-
-#ifdef CONFIG_PROC_FS
-	create_proc_decoder(&bw_stats);
-#endif
-
-#ifdef CONFIG_SIBYTE_BW_TRACE
-	csr_out32((M_SCD_TRSEQ_ASAMPLE | M_SCD_TRSEQ_DSAMPLE |
-		   K_SCD_TRSEQ_TRIGGER_ALL),
-		  IOADDR(A_SCD_TRACE_SEQUENCE_0));
-	csr_out32(M_SCD_TRACE_CFG_RESET, IOADDR(A_SCD_TRACE_CFG));
-	csr_out32(M_SCD_TRACE_CFG_START, IOADDR(A_SCD_TRACE_CFG));
-#endif
-
-	return 0;
-}
-
-__initcall(sibyte_bus_watcher);

Re: [PATCH 6/7] drivers: ssb: Kconfig: Amend SSB_EMBEDDED dependencies

[Ralf Baechle]

On Mon, Jun 17, 2013 at 03:00:40PM +0100, Markos Chandras wrote:

> SSB_EMBEDDED needs functions from driver_pcicore which are only
> available if SSD_DRIVER_HOSTMODE is selected so make it
> depend on that symbol.
> 
> Fixes the following linking problem:
> 
> drivers/ssb/embedded.c:202:
> undefined reference to `ssb_pcicore_plat_dev_init'
> drivers/built-in.o: In function `ssb_pcibios_map_irq':
> drivers/ssb/embedded.c:247:
> undefined reference to `ssb_pcicore_pcibios_map_irq'
> 
> Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
> Acked-by: Steven J. Hill <Steven.Hill@imgtec.com>
> Cc: sibyte-users@bitmover.com
> Cc: netdev@vger.kernel.org
> Cc: Michael Buesch <m@bues.ch>

No comments received but Florian acked it over IRC so applied.

And btw, why is sibyte-users on cc - we don't want to disrupt the silence
of that list too badly ;-)

  Ralf