[PATCH 0/17] FRV: Permit compilation with allmodconfig

[PATCH 0/17] FRV: Permit compilation with allmodconfig

[David Howells]

The attached patches permit the FRV arch to be mostly compiled with
allmodconfig, barring compiler errors.

[PATCH 3/17] FRV: Drop unsupported debugging features

[David Howells]

The attached patch drops support for debugging features that aren't supported
on FRV:

 (*) EARLY_PRINTK

	The on-chip UARTs are set up early enough that this isn't required,
	and VGA support isn't available. There's also a gdbstub available.

 (*) DEBUG_PAGEALLOC

	This can't be easily be done since we use huge static mappings to
	cover the kernel, not pages.

Signed-Off-By: David Howells <dhowells@redhat.com>
---
warthog>diffstat -p1 frv-debugging-2615.diff
 arch/frv/Kconfig.debug |   22 ----------------------
 1 files changed, 22 deletions(-)

diff -uNrp /warthog/kernels/linux-2.6.15/arch/frv/Kconfig.debug linux-2.6.15-frv/arch/frv/Kconfig.debug
--- /warthog/kernels/linux-2.6.15/arch/frv/Kconfig.debug	2005-06-22 13:51:25.000000000 +0100
+++ linux-2.6.15-frv/arch/frv/Kconfig.debug	2006-01-06 14:43:43.000000000 +0000
@@ -2,32 +2,10 @@ menu "Kernel hacking"
 
 source "lib/Kconfig.debug"
 
-config EARLY_PRINTK
-	bool "Early printk"
-	depends on EMBEDDED && DEBUG_KERNEL
-	default n
-	help
-	  Write kernel log output directly into the VGA buffer or to a serial
-	  port.
-
-	  This is useful for kernel debugging when your machine crashes very
-	  early before the console code is initialized. For normal operation
-	  it is not recommended because it looks ugly and doesn't cooperate
-	  with klogd/syslogd or the X server. You should normally N here,
-	  unless you want to debug such a crash.
-
 config DEBUG_STACKOVERFLOW
 	bool "Check for stack overflows"
 	depends on DEBUG_KERNEL
 
-config DEBUG_PAGEALLOC
-	bool "Page alloc debugging"
-	depends on DEBUG_KERNEL
-	help
-	  Unmap pages from the kernel linear mapping after free_pages().
-	  This results in a large slowdown, but helps to find certain types
-	  of memory corruptions.
-
 config GDBSTUB
 	bool "Remote GDB kernel debugging"
 	depends on DEBUG_KERNEL

[PATCH 2/17] FRV: Drop 8/16-bit xchg and cmpxchg

[David Howells]

The attached patch drops support for 8-bit and 16-bit xchg and cmpxchg
emulation and implements 32-bit xchg with the SWAP/SWAPI instruction.

Signed-Off-By: David Howells <dhowells@redhat.com>
---
warthog>diffstat -p1 frv-atomic-2615.diff
 arch/frv/lib/atomic-ops.S |   92 --------------------------------------------
 include/asm-frv/atomic.h  |   96 ++--------------------------------------------
 2 files changed, 5 insertions(+), 183 deletions(-)

diff -uNrp /warthog/kernels/linux-2.6.15/arch/frv/lib/atomic-ops.S linux-2.6.15-frv/arch/frv/lib/atomic-ops.S
--- /warthog/kernels/linux-2.6.15/arch/frv/lib/atomic-ops.S	2005-03-02 12:07:44.000000000 +0000
+++ linux-2.6.15-frv/arch/frv/lib/atomic-ops.S	2006-01-06 14:43:43.000000000 +0000
@@ -129,48 +129,6 @@ atomic_sub_return:
 
 ###############################################################################
 #
-# uint8_t __xchg_8(uint8_t i, uint8_t *v)
-#
-###############################################################################
-	.globl		__xchg_8
-        .type		__xchg_8,@function
-__xchg_8:
-	or.p		gr8,gr8,gr10
-0:
-	orcc		gr0,gr0,gr0,icc3		/* set ICC3.Z */
-	ckeq		icc3,cc7
-	ldub.p		@(gr9,gr0),gr8			/* LD.P/ORCR must be atomic */
-	orcr		cc7,cc7,cc3			/* set CC3 to true */
-	cstb.p		gr10,@(gr9,gr0)		,cc3,#1
-	corcc		gr29,gr29,gr0		,cc3,#1	/* clear ICC3.Z if store happens */
-	beq		icc3,#0,0b
-	bralr
-
-	.size		__xchg_8, .-__xchg_8
-
-###############################################################################
-#
-# uint16_t __xchg_16(uint16_t i, uint16_t *v)
-#
-###############################################################################
-	.globl		__xchg_16
-        .type		__xchg_16,@function
-__xchg_16:
-	or.p		gr8,gr8,gr10
-0:
-	orcc		gr0,gr0,gr0,icc3		/* set ICC3.Z */
-	ckeq		icc3,cc7
-	lduh.p		@(gr9,gr0),gr8			/* LD.P/ORCR must be atomic */
-	orcr		cc7,cc7,cc3			/* set CC3 to true */
-	csth.p		gr10,@(gr9,gr0)		,cc3,#1
-	corcc		gr29,gr29,gr0		,cc3,#1	/* clear ICC3.Z if store happens */
-	beq		icc3,#0,0b
-	bralr
-
-	.size		__xchg_16, .-__xchg_16
-
-###############################################################################
-#
 # uint32_t __xchg_32(uint32_t i, uint32_t *v)
 #
 ###############################################################################
@@ -192,56 +150,6 @@ __xchg_32:
 
 ###############################################################################
 #
-# uint8_t __cmpxchg_8(uint8_t *v, uint8_t test, uint8_t new)
-#
-###############################################################################
-	.globl		__cmpxchg_8
-        .type		__cmpxchg_8,@function
-__cmpxchg_8:
-	or.p		gr8,gr8,gr11
-0:
-	orcc		gr0,gr0,gr0,icc3
-	ckeq		icc3,cc7
-	ldub.p		@(gr11,gr0),gr8
-	orcr		cc7,cc7,cc3
-	sub		gr8,gr9,gr7
-	sllicc		gr7,#24,gr0,icc0
-	bne		icc0,#0,1f
-	cstb.p		gr10,@(gr11,gr0)	,cc3,#1
-	corcc		gr29,gr29,gr0		,cc3,#1
-	beq		icc3,#0,0b
-1:
-	bralr
-
-	.size		__cmpxchg_8, .-__cmpxchg_8
-
-###############################################################################
-#
-# uint16_t __cmpxchg_16(uint16_t *v, uint16_t test, uint16_t new)
-#
-###############################################################################
-	.globl		__cmpxchg_16
-        .type		__cmpxchg_16,@function
-__cmpxchg_16:
-	or.p		gr8,gr8,gr11
-0:
-	orcc		gr0,gr0,gr0,icc3
-	ckeq		icc3,cc7
-	lduh.p		@(gr11,gr0),gr8
-	orcr		cc7,cc7,cc3
-	sub		gr8,gr9,gr7
-	sllicc		gr7,#16,gr0,icc0
-	bne		icc0,#0,1f
-	csth.p		gr10,@(gr11,gr0)	,cc3,#1
-	corcc		gr29,gr29,gr0		,cc3,#1
-	beq		icc3,#0,0b
-1:
-	bralr
-
-	.size		__cmpxchg_16, .-__cmpxchg_16
-
-###############################################################################
-#
 # uint32_t __cmpxchg_32(uint32_t *v, uint32_t test, uint32_t new)
 #
 ###############################################################################
diff -uNrp /warthog/kernels/linux-2.6.15/include/asm-frv/atomic.h linux-2.6.15-frv/include/asm-frv/atomic.h
--- /warthog/kernels/linux-2.6.15/include/asm-frv/atomic.h	2006-01-04 12:39:38.000000000 +0000
+++ linux-2.6.15-frv/include/asm-frv/atomic.h	2006-01-06 14:43:43.000000000 +0000
@@ -218,51 +218,12 @@ extern unsigned long atomic_test_and_XOR
 	__typeof__(*(ptr)) __xg_orig;						\
 										\
 	switch (sizeof(__xg_orig)) {						\
-	case 1:									\
-		asm volatile(							\
-			"0:						\n"	\
-			"	orcc		gr0,gr0,gr0,icc3	\n"	\
-			"	ckeq		icc3,cc7		\n"	\
-			"	ldub.p		%M0,%1			\n"	\
-			"	orcr		cc7,cc7,cc3		\n"	\
-			"	cstb.p		%2,%M0		,cc3,#1	\n"	\
-			"	corcc		gr29,gr29,gr0	,cc3,#1	\n"	\
-			"	beq		icc3,#0,0b		\n"	\
-			: "+U"(*__xg_ptr), "=&r"(__xg_orig)			\
-			: "r"(x)						\
-			: "memory", "cc7", "cc3", "icc3"			\
-			);							\
-		break;								\
-										\
-	case 2:									\
-		asm volatile(							\
-			"0:						\n"	\
-			"	orcc		gr0,gr0,gr0,icc3	\n"	\
-			"	ckeq		icc3,cc7		\n"	\
-			"	lduh.p		%M0,%1			\n"	\
-			"	orcr		cc7,cc7,cc3		\n"	\
-			"	csth.p		%2,%M0		,cc3,#1	\n"	\
-			"	corcc		gr29,gr29,gr0	,cc3,#1	\n"	\
-			"	beq		icc3,#0,0b		\n"	\
-			: "+U"(*__xg_ptr), "=&r"(__xg_orig)			\
-			: "r"(x)						\
-			: "memory", "cc7", "cc3", "icc3"			\
-			);							\
-		break;								\
-										\
 	case 4:									\
 		asm volatile(							\
-			"0:						\n"	\
-			"	orcc		gr0,gr0,gr0,icc3	\n"	\
-			"	ckeq		icc3,cc7		\n"	\
-			"	ld.p		%M0,%1			\n"	\
-			"	orcr		cc7,cc7,cc3		\n"	\
-			"	cst.p		%2,%M0		,cc3,#1	\n"	\
-			"	corcc		gr29,gr29,gr0	,cc3,#1	\n"	\
-			"	beq		icc3,#0,0b		\n"	\
-			: "+U"(*__xg_ptr), "=&r"(__xg_orig)			\
+			"swap%I0 %2,%M0"					\
+			: "+m"(*__xg_ptr), "=&r"(__xg_orig)			\
 			: "r"(x)						\
-			: "memory", "cc7", "cc3", "icc3"			\
+			: "memory"						\
 			);							\
 		break;								\
 										\
@@ -277,8 +238,6 @@ extern unsigned long atomic_test_and_XOR
 
 #else
 
-extern uint8_t  __xchg_8 (uint8_t i,  volatile void *v);
-extern uint16_t __xchg_16(uint16_t i, volatile void *v);
 extern uint32_t __xchg_32(uint32_t i, volatile void *v);
 
 #define xchg(ptr, x)										\
@@ -287,8 +246,6 @@ extern uint32_t __xchg_32(uint32_t i, vo
 	__typeof__(*(ptr)) __xg_orig;								\
 												\
 	switch (sizeof(__xg_orig)) {								\
-	case 1: __xg_orig = (__typeof__(*(ptr))) __xchg_8 ((uint8_t)  x, __xg_ptr);	break;	\
-	case 2: __xg_orig = (__typeof__(*(ptr))) __xchg_16((uint16_t) x, __xg_ptr);	break;	\
 	case 4: __xg_orig = (__typeof__(*(ptr))) __xchg_32((uint32_t) x, __xg_ptr);	break;	\
 	default:										\
 		__xg_orig = 0;									\
@@ -318,46 +275,6 @@ extern uint32_t __xchg_32(uint32_t i, vo
 	__typeof__(*(ptr)) __xg_new = (new);					\
 										\
 	switch (sizeof(__xg_orig)) {						\
-	case 1:									\
-		asm volatile(							\
-			"0:						\n"	\
-			"	orcc		gr0,gr0,gr0,icc3	\n"	\
-			"	ckeq		icc3,cc7		\n"	\
-			"	ldub.p		%M0,%1			\n"	\
-			"	orcr		cc7,cc7,cc3		\n"	\
-			"	sub%I4		%1,%4,%2		\n"	\
-			"	sllcc		%2,#24,gr0,icc0		\n"	\
-			"	bne		icc0,#0,1f		\n"	\
-			"	cstb.p		%3,%M0		,cc3,#1	\n"	\
-			"	corcc		gr29,gr29,gr0	,cc3,#1	\n"	\
-			"	beq		icc3,#0,0b		\n"	\
-			"1:						\n"	\
-			: "+U"(*__xg_ptr), "=&r"(__xg_orig), "=&r"(__xg_tmp)	\
-			: "r"(__xg_new), "NPr"(__xg_test)			\
-			: "memory", "cc7", "cc3", "icc3", "icc0"		\
-			);							\
-		break;								\
-										\
-	case 2:									\
-		asm volatile(							\
-			"0:						\n"	\
-			"	orcc		gr0,gr0,gr0,icc3	\n"	\
-			"	ckeq		icc3,cc7		\n"	\
-			"	lduh.p		%M0,%1			\n"	\
-			"	orcr		cc7,cc7,cc3		\n"	\
-			"	sub%I4		%1,%4,%2		\n"	\
-			"	sllcc		%2,#16,gr0,icc0		\n"	\
-			"	bne		icc0,#0,1f		\n"	\
-			"	csth.p		%3,%M0		,cc3,#1	\n"	\
-			"	corcc		gr29,gr29,gr0	,cc3,#1	\n"	\
-			"	beq		icc3,#0,0b		\n"	\
-			"1:						\n"	\
-			: "+U"(*__xg_ptr), "=&r"(__xg_orig), "=&r"(__xg_tmp)	\
-			: "r"(__xg_new), "NPr"(__xg_test)			\
-			: "memory", "cc7", "cc3", "icc3", "icc0"		\
-			);							\
-		break;								\
-										\
 	case 4:									\
 		asm volatile(							\
 			"0:						\n"	\
@@ -388,8 +305,6 @@ extern uint32_t __xchg_32(uint32_t i, vo
 
 #else
 
-extern uint8_t  __cmpxchg_8 (uint8_t *v,  uint8_t test,  uint8_t new);
-extern uint16_t __cmpxchg_16(uint16_t *v, uint16_t test, uint16_t new);
 extern uint32_t __cmpxchg_32(uint32_t *v, uint32_t test, uint32_t new);
 
 #define cmpxchg(ptr, test, new)							\
@@ -400,8 +315,6 @@ extern uint32_t __cmpxchg_32(uint32_t *v
 	__typeof__(*(ptr)) __xg_new = (new);					\
 										\
 	switch (sizeof(__xg_orig)) {						\
-	case 1: __xg_orig = __cmpxchg_8 (__xg_ptr, __xg_test, __xg_new); break;	\
-	case 2: __xg_orig = __cmpxchg_16(__xg_ptr, __xg_test, __xg_new); break;	\
 	case 4: __xg_orig = __cmpxchg_32(__xg_ptr, __xg_test, __xg_new); break;	\
 	default:								\
 		__xg_orig = 0;							\
@@ -414,7 +327,7 @@ extern uint32_t __cmpxchg_32(uint32_t *v
 
 #endif
 
-#define atomic_cmpxchg(v, old, new) ((int)cmpxchg(&((v)->counter), old, new))
+#define atomic_cmpxchg(v, old, new) (cmpxchg(&((v)->counter), old, new))
 
 #define atomic_add_unless(v, a, u)				\
 ({								\
@@ -424,6 +337,7 @@ extern uint32_t __cmpxchg_32(uint32_t *v
 		c = old;					\
 	c != (u);						\
 })
+
 #define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
 
 #endif /* _ASM_ATOMIC_H */

[PATCH 4/17] FRV: Implement and export various things required by modules

[David Howells]

The attached patch exports a number of features required to build all the
modules. It also implements the following simple features:

 (*) csum_partial_copy_from_user() for MMU as well as no-MMU.

 (*) __ucmpdi2().

so that they can be exported too.

Signed-Off-By: David Howells <dhowells@redhat.com>
---
warthog>diffstat -p1 frv-exports-2615.diff
 arch/frv/kernel/frv_ksyms.c           |   25 +++++++++++++-----
 arch/frv/kernel/irq.c                 |   17 ++++++++++++
 arch/frv/kernel/pm.c                  |    2 +
 arch/frv/kernel/time.c                |    3 ++
 arch/frv/kernel/traps.c               |    3 ++
 arch/frv/kernel/uaccess.c             |    7 +++++
 arch/frv/lib/Makefile                 |    2 -
 arch/frv/lib/__ucmpdi2.S              |   45 ++++++++++++++++++++++++++++++++++
 arch/frv/lib/checksum.c               |   31 ++++++++++++++++++-----
 arch/frv/mb93090-mb00/pci-dma-nommu.c |    8 ++++++
 arch/frv/mb93090-mb00/pci-dma.c       |   10 +++++++
 arch/frv/mm/cache-page.c              |    5 +++
 arch/frv/mm/highmem.c                 |    8 ++++++
 lib/find_next_bit.c                   |    3 ++
 14 files changed, 155 insertions(+), 14 deletions(-)

diff -uNrp /warthog/kernels/linux-2.6.15/arch/frv/kernel/frv_ksyms.c linux-2.6.15-frv/arch/frv/kernel/frv_ksyms.c
--- /warthog/kernels/linux-2.6.15/arch/frv/kernel/frv_ksyms.c	2005-11-01 13:18:57.000000000 +0000
+++ linux-2.6.15-frv/arch/frv/kernel/frv_ksyms.c	2006-01-06 14:43:43.000000000 +0000
@@ -16,10 +16,11 @@
 #include <asm/semaphore.h>
 #include <asm/checksum.h>
 #include <asm/hardirq.h>
-#include <asm/current.h>
+#include <asm/cacheflush.h>
 
 extern void dump_thread(struct pt_regs *, struct user *);
 extern long __memcpy_user(void *dst, const void *src, size_t count);
+extern long __memset_user(void *dst, const void *src, size_t count);
 
 /* platform dependent support */
 
@@ -50,7 +51,11 @@ EXPORT_SYMBOL(disable_irq);
 EXPORT_SYMBOL(__res_bus_clock_speed_HZ);
 EXPORT_SYMBOL(__page_offset);
 EXPORT_SYMBOL(__memcpy_user);
-EXPORT_SYMBOL(flush_dcache_page);
+EXPORT_SYMBOL(__memset_user);
+EXPORT_SYMBOL(frv_dcache_writeback);
+EXPORT_SYMBOL(frv_cache_invalidate);
+EXPORT_SYMBOL(frv_icache_invalidate);
+EXPORT_SYMBOL(frv_cache_wback_inv);
 
 #ifndef CONFIG_MMU
 EXPORT_SYMBOL(memory_start);
@@ -72,6 +77,9 @@ EXPORT_SYMBOL(memcmp);
 EXPORT_SYMBOL(memscan);
 EXPORT_SYMBOL(memmove);
 
+EXPORT_SYMBOL(__outsl_ns);
+EXPORT_SYMBOL(__insl_ns);
+
 EXPORT_SYMBOL(get_wchan);
 
 #ifdef CONFIG_FRV_OUTOFLINE_ATOMIC_OPS
@@ -80,14 +88,13 @@ EXPORT_SYMBOL(atomic_test_and_OR_mask);
 EXPORT_SYMBOL(atomic_test_and_XOR_mask);
 EXPORT_SYMBOL(atomic_add_return);
 EXPORT_SYMBOL(atomic_sub_return);
-EXPORT_SYMBOL(__xchg_8);
-EXPORT_SYMBOL(__xchg_16);
 EXPORT_SYMBOL(__xchg_32);
-EXPORT_SYMBOL(__cmpxchg_8);
-EXPORT_SYMBOL(__cmpxchg_16);
 EXPORT_SYMBOL(__cmpxchg_32);
 #endif
 
+EXPORT_SYMBOL(__debug_bug_printk);
+EXPORT_SYMBOL(__delay_loops_MHz);
+
 /*
  * libgcc functions - functions that are used internally by the
  * compiler...  (prototypes are not correct though, but that
@@ -101,6 +108,8 @@ extern void __divdi3(void);
 extern void __lshrdi3(void);
 extern void __moddi3(void);
 extern void __muldi3(void);
+extern void __mulll(void);
+extern void __umulll(void);
 extern void __negdi2(void);
 extern void __ucmpdi2(void);
 extern void __udivdi3(void);
@@ -116,8 +125,10 @@ EXPORT_SYMBOL(__ashrdi3);
 EXPORT_SYMBOL(__lshrdi3);
 //EXPORT_SYMBOL(__moddi3);
 EXPORT_SYMBOL(__muldi3);
+EXPORT_SYMBOL(__mulll);
+EXPORT_SYMBOL(__umulll);
 EXPORT_SYMBOL(__negdi2);
-//EXPORT_SYMBOL(__ucmpdi2);
+EXPORT_SYMBOL(__ucmpdi2);
 //EXPORT_SYMBOL(__udivdi3);
 //EXPORT_SYMBOL(__udivmoddi4);
 //EXPORT_SYMBOL(__umoddi3);
diff -uNrp /warthog/kernels/linux-2.6.15/arch/frv/kernel/irq.c linux-2.6.15-frv/arch/frv/kernel/irq.c
--- /warthog/kernels/linux-2.6.15/arch/frv/kernel/irq.c	2005-03-02 12:07:44.000000000 +0000
+++ linux-2.6.15-frv/arch/frv/kernel/irq.c	2006-01-06 14:43:43.000000000 +0000
@@ -32,6 +32,7 @@
 #include <linux/irq.h>
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
+#include <linux/module.h>
 
 #include <asm/atomic.h>
 #include <asm/io.h>
@@ -178,6 +179,8 @@ void disable_irq_nosync(unsigned int irq
 	spin_unlock_irqrestore(&level->lock, flags);
 }
 
+EXPORT_SYMBOL(disable_irq_nosync);
+
 /**
  *	disable_irq - disable an irq and wait for completion
  *	@irq: Interrupt to disable
@@ -204,6 +207,8 @@ void disable_irq(unsigned int irq)
 #endif
 }
 
+EXPORT_SYMBOL(disable_irq);
+
 /**
  *	enable_irq - enable handling of an irq
  *	@irq: Interrupt to enable
@@ -268,6 +273,8 @@ void enable_irq(unsigned int irq)
 	spin_unlock_irqrestore(&level->lock, flags);
 }
 
+EXPORT_SYMBOL(enable_irq);
+
 /*****************************************************************************/
 /*
  * handles all normal device IRQ's
@@ -425,6 +432,8 @@ int request_irq(unsigned int irq,
 	return retval;
 }
 
+EXPORT_SYMBOL(request_irq);
+
 /**
  *	free_irq - free an interrupt
  *	@irq: Interrupt line to free
@@ -496,6 +505,8 @@ void free_irq(unsigned int irq, void *de
 	}
 }
 
+EXPORT_SYMBOL(free_irq);
+
 /*
  * IRQ autodetection code..
  *
@@ -519,6 +530,8 @@ unsigned long probe_irq_on(void)
 	return 0;
 }
 
+EXPORT_SYMBOL(probe_irq_on);
+
 /*
  * Return a mask of triggered interrupts (this
  * can handle only legacy ISA interrupts).
@@ -542,6 +555,8 @@ unsigned int probe_irq_mask(unsigned lon
 	return 0;
 }
 
+EXPORT_SYMBOL(probe_irq_mask);
+
 /*
  * Return the one interrupt that triggered (this can
  * handle any interrupt source).
@@ -571,6 +586,8 @@ int probe_irq_off(unsigned long xmask)
 	return -1;
 }
 
+EXPORT_SYMBOL(probe_irq_off);
+
 /* this was setup_x86_irq but it seems pretty generic */
 int setup_irq(unsigned int irq, struct irqaction *new)
 {
diff -uNrp /warthog/kernels/linux-2.6.15/arch/frv/kernel/pm.c linux-2.6.15-frv/arch/frv/kernel/pm.c
--- /warthog/kernels/linux-2.6.15/arch/frv/kernel/pm.c	2006-01-04 12:39:18.000000000 +0000
+++ linux-2.6.15-frv/arch/frv/kernel/pm.c	2006-01-06 14:43:43.000000000 +0000
@@ -13,6 +13,7 @@
 
 #include <linux/config.h>
 #include <linux/init.h>
+#include <linux/module.h>
 #include <linux/pm.h>
 #include <linux/pm_legacy.h>
 #include <linux/sched.h>
@@ -27,6 +28,7 @@
 #include "local.h"
 
 void (*pm_power_off)(void);
+EXPORT_SYMBOL(pm_power_off);
 
 extern void frv_change_cmode(int);
 
diff -uNrp /warthog/kernels/linux-2.6.15/arch/frv/kernel/time.c linux-2.6.15-frv/arch/frv/kernel/time.c
--- /warthog/kernels/linux-2.6.15/arch/frv/kernel/time.c	2006-01-04 12:39:18.000000000 +0000
+++ linux-2.6.15-frv/arch/frv/kernel/time.c	2006-01-06 14:43:43.000000000 +0000
@@ -189,6 +189,8 @@ void do_gettimeofday(struct timeval *tv)
 	tv->tv_usec = usec;
 }
 
+EXPORT_SYMBOL(do_gettimeofday);
+
 int do_settimeofday(struct timespec *tv)
 {
 	time_t wtm_sec, sec = tv->tv_sec;
@@ -218,6 +220,7 @@ int do_settimeofday(struct timespec *tv)
 	clock_was_set();
 	return 0;
 }
+
 EXPORT_SYMBOL(do_settimeofday);
 
 /*
diff -uNrp /warthog/kernels/linux-2.6.15/arch/frv/kernel/traps.c linux-2.6.15-frv/arch/frv/kernel/traps.c
--- /warthog/kernels/linux-2.6.15/arch/frv/kernel/traps.c	2005-03-02 12:07:44.000000000 +0000
+++ linux-2.6.15-frv/arch/frv/kernel/traps.c	2006-01-06 14:43:43.000000000 +0000
@@ -19,6 +19,7 @@
 #include <linux/string.h>
 #include <linux/linkage.h>
 #include <linux/init.h>
+#include <linux/module.h>
 
 #include <asm/setup.h>
 #include <asm/fpu.h>
@@ -250,6 +251,8 @@ void dump_stack(void)
 	show_stack(NULL, NULL);
 }
 
+EXPORT_SYMBOL(dump_stack);
+
 void show_stack(struct task_struct *task, unsigned long *sp)
 {
 }
diff -uNrp /warthog/kernels/linux-2.6.15/arch/frv/kernel/uaccess.c linux-2.6.15-frv/arch/frv/kernel/uaccess.c
--- /warthog/kernels/linux-2.6.15/arch/frv/kernel/uaccess.c	2005-03-02 12:07:44.000000000 +0000
+++ linux-2.6.15-frv/arch/frv/kernel/uaccess.c	2006-01-06 14:43:43.000000000 +0000
@@ -10,6 +10,7 @@
  */
 
 #include <linux/mm.h>
+#include <linux/module.h>
 #include <asm/uaccess.h>
 
 /*****************************************************************************/
@@ -58,8 +59,11 @@ long strncpy_from_user(char *dst, const 
 		memset(p, 0, count); /* clear remainder of buffer [security] */
 
 	return err;
+
 } /* end strncpy_from_user() */
 
+EXPORT_SYMBOL(strncpy_from_user);
+
 /*****************************************************************************/
 /*
  * Return the size of a string (including the ending 0)
@@ -92,4 +96,7 @@ long strnlen_user(const char *src, long 
 	}
 
 	return p - src + 1; /* return length including NUL */
+
 } /* end strnlen_user() */
+
+EXPORT_SYMBOL(strnlen_user);
diff -uNrp /warthog/kernels/linux-2.6.15/arch/frv/lib/checksum.c linux-2.6.15-frv/arch/frv/lib/checksum.c
--- /warthog/kernels/linux-2.6.15/arch/frv/lib/checksum.c	2005-03-02 12:07:44.000000000 +0000
+++ linux-2.6.15-frv/arch/frv/lib/checksum.c	2006-01-06 14:43:43.000000000 +0000
@@ -33,6 +33,7 @@
 
 #include <net/checksum.h>
 #include <asm/checksum.h>
+#include <linux/module.h>
 
 static inline unsigned short from32to16(unsigned long x)
 {
@@ -115,34 +116,52 @@ unsigned int csum_partial(const unsigned
 	return result;
 }
 
+EXPORT_SYMBOL(csum_partial);
+
 /*
  * this routine is used for miscellaneous IP-like checksums, mainly
  * in icmp.c
  */
 unsigned short ip_compute_csum(const unsigned char * buff, int len)
 {
-	return ~do_csum(buff,len);
+	return ~do_csum(buff, len);
 }
 
+EXPORT_SYMBOL(ip_compute_csum);
+
 /*
  * copy from fs while checksumming, otherwise like csum_partial
  */
-
 unsigned int
-csum_partial_copy_from_user(const char *src, char *dst, int len, int sum, int *csum_err)
+csum_partial_copy_from_user(const char __user *src, char *dst,
+			    int len, int sum, int *csum_err)
 {
-	if (csum_err) *csum_err = 0;
-	memcpy(dst, src, len);
+	int rem;
+
+	if (csum_err)
+		*csum_err = 0;
+
+	rem = copy_from_user(dst, src, len);
+	if (rem != 0) {
+		if (csum_err)
+			*csum_err = -EFAULT;
+		memset(dst + len - rem, 0, rem);
+		len = rem;
+	}
+
 	return csum_partial(dst, len, sum);
 }
 
+EXPORT_SYMBOL(csum_partial_copy_from_user);
+
 /*
  * copy from ds while checksumming, otherwise like csum_partial
  */
-
 unsigned int
 csum_partial_copy(const char *src, char *dst, int len, int sum)
 {
 	memcpy(dst, src, len);
 	return csum_partial(dst, len, sum);
 }
+
+EXPORT_SYMBOL(csum_partial_copy);
diff -uNrp /warthog/kernels/linux-2.6.15/arch/frv/lib/Makefile linux-2.6.15-frv/arch/frv/lib/Makefile
--- /warthog/kernels/linux-2.6.15/arch/frv/lib/Makefile	2005-03-02 12:07:44.000000000 +0000
+++ linux-2.6.15-frv/arch/frv/lib/Makefile	2006-01-06 14:43:43.000000000 +0000
@@ -3,6 +3,6 @@
 #
 
 lib-y := \
-	__ashldi3.o __lshrdi3.o __muldi3.o __ashrdi3.o __negdi2.o \
+	__ashldi3.o __lshrdi3.o __muldi3.o __ashrdi3.o __negdi2.o __ucmpdi2.o \
 	checksum.o memcpy.o memset.o atomic-ops.o \
 	outsl_ns.o outsl_sw.o insl_ns.o insl_sw.o cache.o
diff -uNrp /warthog/kernels/linux-2.6.15/arch/frv/lib/__ucmpdi2.S linux-2.6.15-frv/arch/frv/lib/__ucmpdi2.S
--- /warthog/kernels/linux-2.6.15/arch/frv/lib/__ucmpdi2.S	1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.15-frv/arch/frv/lib/__ucmpdi2.S	2006-01-06 14:43:43.000000000 +0000
@@ -0,0 +1,45 @@
+/* __ucmpdi2.S: 64-bit unsigned compare
+ *
+ * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * 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.
+ */
+
+
+        .text
+        .p2align	4
+
+###############################################################################
+#
+# int __ucmpdi2(unsigned long long a [GR8:GR9],
+#		unsigned long long b [GR10:GR11])
+#
+# - returns 0, 1, or 2 as a <, =, > b respectively.
+#
+###############################################################################
+        .globl		__ucmpdi2
+        .type		__ucmpdi2,@function
+__ucmpdi2:
+	or.p		gr8,gr0,gr4
+	subcc		gr8,gr10,gr0,icc0
+	setlos.p	#0,gr8
+	bclr		icc0,#2			; a.msw < b.msw
+
+	setlos.p	#2,gr8
+	bhilr		icc0,#0			; a.msw > b.msw
+
+	subcc.p		gr9,gr11,gr0,icc1
+	setlos		#0,gr8
+	setlos.p	#2,gr9
+	setlos		#1,gr7
+	cknc		icc1,cc6
+	cor.p		gr9,gr0,gr8,		cc6,#1
+	cckls		icc1,cc4,		cc6,#1
+	andcr		cc6,cc4,cc4
+	cor		gr7,gr0,gr8,		cc4,#1
+	bralr
+	.size		__ucmpdi2, .-__ucmpdi2
diff -uNrp /warthog/kernels/linux-2.6.15/arch/frv/mb93090-mb00/pci-dma.c linux-2.6.15-frv/arch/frv/mb93090-mb00/pci-dma.c
--- /warthog/kernels/linux-2.6.15/arch/frv/mb93090-mb00/pci-dma.c	2006-01-04 12:39:18.000000000 +0000
+++ linux-2.6.15-frv/arch/frv/mb93090-mb00/pci-dma.c	2006-01-06 14:43:43.000000000 +0000
@@ -28,11 +28,15 @@ void *dma_alloc_coherent(struct device *
 	return ret;
 }
 
+EXPORT_SYMBOL(dma_alloc_coherent);
+
 void dma_free_coherent(struct device *hwdev, size_t size, void *vaddr, dma_addr_t dma_handle)
 {
 	consistent_free(vaddr);
 }
 
+EXPORT_SYMBOL(dma_free_coherent);
+
 /*
  * Map a single buffer of the indicated size for DMA in streaming mode.
  * The 32-bit bus address to use is returned.
@@ -51,6 +55,8 @@ dma_addr_t dma_map_single(struct device 
 	return virt_to_bus(ptr);
 }
 
+EXPORT_SYMBOL(dma_map_single);
+
 /*
  * Map a set of buffers described by scatterlist in streaming
  * mode for DMA.  This is the scather-gather version of the
@@ -96,6 +102,8 @@ int dma_map_sg(struct device *dev, struc
 	return nents;
 }
 
+EXPORT_SYMBOL(dma_map_sg);
+
 dma_addr_t dma_map_page(struct device *dev, struct page *page, unsigned long offset,
 			size_t size, enum dma_data_direction direction)
 {
@@ -103,3 +111,5 @@ dma_addr_t dma_map_page(struct device *d
 	flush_dcache_page(page);
 	return (dma_addr_t) page_to_phys(page) + offset;
 }
+
+EXPORT_SYMBOL(dma_map_page);
diff -uNrp /warthog/kernels/linux-2.6.15/arch/frv/mb93090-mb00/pci-dma-nommu.c linux-2.6.15-frv/arch/frv/mb93090-mb00/pci-dma-nommu.c
--- /warthog/kernels/linux-2.6.15/arch/frv/mb93090-mb00/pci-dma-nommu.c	2006-01-04 12:39:18.000000000 +0000
+++ linux-2.6.15-frv/arch/frv/mb93090-mb00/pci-dma-nommu.c	2006-01-06 14:43:43.000000000 +0000
@@ -83,6 +83,8 @@ void *dma_alloc_coherent(struct device *
 	return NULL;
 }
 
+EXPORT_SYMBOL(dma_alloc_coherent);
+
 void dma_free_coherent(struct device *hwdev, size_t size, void *vaddr, dma_addr_t dma_handle)
 {
 	struct dma_alloc_record *rec;
@@ -102,6 +104,8 @@ void dma_free_coherent(struct device *hw
 	BUG();
 }
 
+EXPORT_SYMBOL(dma_free_coherent);
+
 /*
  * Map a single buffer of the indicated size for DMA in streaming mode.
  * The 32-bit bus address to use is returned.
@@ -120,6 +124,8 @@ dma_addr_t dma_map_single(struct device 
 	return virt_to_bus(ptr);
 }
 
+EXPORT_SYMBOL(dma_map_single);
+
 /*
  * Map a set of buffers described by scatterlist in streaming
  * mode for DMA.  This is the scather-gather version of the
@@ -150,3 +156,5 @@ int dma_map_sg(struct device *dev, struc
 
 	return nents;
 }
+
+EXPORT_SYMBOL(dma_map_sg);
diff -uNrp /warthog/kernels/linux-2.6.15/arch/frv/mm/cache-page.c linux-2.6.15-frv/arch/frv/mm/cache-page.c
--- /warthog/kernels/linux-2.6.15/arch/frv/mm/cache-page.c	2005-03-02 12:07:44.000000000 +0000
+++ linux-2.6.15-frv/arch/frv/mm/cache-page.c	2006-01-06 14:43:43.000000000 +0000
@@ -11,6 +11,7 @@
 #include <linux/sched.h>
 #include <linux/mm.h>
 #include <linux/highmem.h>
+#include <linux/module.h>
 #include <asm/pgalloc.h>
 
 /*****************************************************************************/
@@ -38,6 +39,8 @@ void flush_dcache_page(struct page *page
 
 } /* end flush_dcache_page() */
 
+EXPORT_SYMBOL(flush_dcache_page);
+
 /*****************************************************************************/
 /*
  * ICI takes a virtual address and the page may not currently have one
@@ -64,3 +67,5 @@ void flush_icache_user_range(struct vm_a
 	}
 
 } /* end flush_icache_user_range() */
+
+EXPORT_SYMBOL(flush_icache_user_range);
diff -uNrp /warthog/kernels/linux-2.6.15/arch/frv/mm/highmem.c linux-2.6.15-frv/arch/frv/mm/highmem.c
--- /warthog/kernels/linux-2.6.15/arch/frv/mm/highmem.c	2005-03-02 12:07:44.000000000 +0000
+++ linux-2.6.15-frv/arch/frv/mm/highmem.c	2006-01-06 14:43:43.000000000 +0000
@@ -9,6 +9,7 @@
  * 2 of the License, or (at your option) any later version.
  */
 #include <linux/highmem.h>
+#include <linux/module.h>
 
 void *kmap(struct page *page)
 {
@@ -18,6 +19,8 @@ void *kmap(struct page *page)
 	return kmap_high(page);
 }
 
+EXPORT_SYMBOL(kmap);
+
 void kunmap(struct page *page)
 {
 	if (in_interrupt())
@@ -27,7 +30,12 @@ void kunmap(struct page *page)
 	kunmap_high(page);
 }
 
+EXPORT_SYMBOL(kunmap);
+
 struct page *kmap_atomic_to_page(void *ptr)
 {
 	return virt_to_page(ptr);
 }
+
+
+EXPORT_SYMBOL(kmap_atomic_to_page);
diff -uNrp /warthog/kernels/linux-2.6.15/lib/find_next_bit.c linux-2.6.15-frv/lib/find_next_bit.c
--- /warthog/kernels/linux-2.6.15/lib/find_next_bit.c	2005-03-02 12:09:02.000000000 +0000
+++ linux-2.6.15-frv/lib/find_next_bit.c	2006-01-06 14:43:43.000000000 +0000
@@ -10,6 +10,7 @@
  */
 
 #include <linux/bitops.h>
+#include <linux/module.h>
 
 int find_next_bit(const unsigned long *addr, int size, int offset)
 {
@@ -53,3 +54,5 @@ int find_next_bit(const unsigned long *a
 
 	return offset;
 }
+
+EXPORT_SYMBOL(find_next_bit);

[PATCH 1/17] FRV: Suppress configuration of certain features for FRV

[David Howells]

The attached patch suppresses configuration of certain features for the FRV
arch as they can't be built for FRV at the moment:

 (*) RTC

 (*) HISAX_*

 (*) PARPORT_PC

 (*) VGA_CONSOLE

 (*) BINFMT_ELF

Signed-Off-By: David Howells <dhowells@redhat.com>
---
warthog>diffstat -p1 frv-deconfig-2615.diff
 drivers/char/Kconfig          |    4 ++--
 drivers/isdn/hisax/Kconfig    |   10 +++++-----
 drivers/parport/Kconfig       |    2 +-
 drivers/video/console/Kconfig |    2 +-
 fs/Kconfig.binfmt             |    2 +-
 5 files changed, 10 insertions(+), 10 deletions(-)

diff -uNrp /warthog/kernels/linux-2.6.15/drivers/char/Kconfig linux-2.6.15-frv/drivers/char/Kconfig
--- /warthog/kernels/linux-2.6.15/drivers/char/Kconfig	2006-01-04 12:39:24.000000000 +0000
+++ linux-2.6.15-frv/drivers/char/Kconfig	2006-01-06 14:45:11.000000000 +0000
@@ -687,7 +687,7 @@ config NVRAM
 
 config RTC
 	tristate "Enhanced Real Time Clock Support"
-	depends on !PPC32 && !PARISC && !IA64 && !M68K && (!SPARC || PCI)
+	depends on !PPC32 && !PARISC && !IA64 && !M68K && (!SPARC || PCI) && !FRV
 	---help---
 	  If you say Y here and create a character special file /dev/rtc with
 	  major number 10 and minor number 135 using mknod ("man mknod"), you
@@ -735,7 +735,7 @@ config SGI_IP27_RTC
 
 config GEN_RTC
 	tristate "Generic /dev/rtc emulation"
-	depends on RTC!=y && !IA64 && !ARM && !M32R && !SPARC
+	depends on RTC!=y && !IA64 && !ARM && !M32R && !SPARC && !FRV
 	---help---
 	  If you say Y here and create a character special file /dev/rtc with
 	  major number 10 and minor number 135 using mknod ("man mknod"), you
diff -uNrp /warthog/kernels/linux-2.6.15/drivers/isdn/hisax/Kconfig linux-2.6.15-frv/drivers/isdn/hisax/Kconfig
--- /warthog/kernels/linux-2.6.15/drivers/isdn/hisax/Kconfig	2006-01-04 12:39:26.000000000 +0000
+++ linux-2.6.15-frv/drivers/isdn/hisax/Kconfig	2006-01-06 14:43:43.000000000 +0000
@@ -110,7 +110,7 @@ config HISAX_16_3
 
 config HISAX_TELESPCI
 	bool "Teles PCI"
-	depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K))
+	depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || FRV))
 	help
 	  This enables HiSax support for the Teles PCI.
 	  See <file:Documentation/isdn/README.HiSax> on how to configure it.
@@ -238,7 +238,7 @@ config HISAX_MIC
 
 config HISAX_NETJET
 	bool "NETjet card"
-	depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K))
+	depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || FRV))
 	help
 	  This enables HiSax support for the NetJet from Traverse
 	  Technologies.
@@ -249,7 +249,7 @@ config HISAX_NETJET
 
 config HISAX_NETJET_U
 	bool "NETspider U card"
-	depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K))
+	depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || FRV))
 	help
 	  This enables HiSax support for the Netspider U interface ISDN card
 	  from Traverse Technologies.
@@ -317,7 +317,7 @@ config HISAX_GAZEL
 
 config HISAX_HFC_PCI
 	bool "HFC PCI-Bus cards"
-	depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K))
+	depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || FRV))
 	help
 	  This enables HiSax support for the HFC-S PCI 2BDS0 based cards.
 
@@ -344,7 +344,7 @@ config HISAX_HFC_SX
 
 config HISAX_ENTERNOW_PCI
 	bool "Formula-n enter:now PCI card"
-	depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K))
+	depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || FRV))
 	help
 	  This enables HiSax support for the Formula-n enter:now PCI
 	  ISDN card.
diff -uNrp /warthog/kernels/linux-2.6.15/drivers/parport/Kconfig linux-2.6.15-frv/drivers/parport/Kconfig
--- /warthog/kernels/linux-2.6.15/drivers/parport/Kconfig	2005-08-30 13:56:21.000000000 +0100
+++ linux-2.6.15-frv/drivers/parport/Kconfig	2006-01-06 14:43:43.000000000 +0000
@@ -34,7 +34,7 @@ config PARPORT
 
 config PARPORT_PC
 	tristate "PC-style hardware"
-	depends on PARPORT && (!SPARC64 || PCI) && !SPARC32 && !M32R
+	depends on PARPORT && (!SPARC64 || PCI) && !SPARC32 && !M32R && !FRV
 	---help---
 	  You should say Y here if you have a PC-style parallel port. All
 	  IBM PC compatible computers and some Alphas have PC-style
diff -uNrp /warthog/kernels/linux-2.6.15/drivers/video/console/Kconfig linux-2.6.15-frv/drivers/video/console/Kconfig
--- /warthog/kernels/linux-2.6.15/drivers/video/console/Kconfig	2006-01-04 12:39:34.000000000 +0000
+++ linux-2.6.15-frv/drivers/video/console/Kconfig	2006-01-06 14:46:13.000000000 +0000
@@ -6,7 +6,7 @@ menu "Console display driver support"
 
 config VGA_CONSOLE
 	bool "VGA text console" if EMBEDDED || !X86
-	depends on !ARCH_ACORN && !ARCH_EBSA110 && !4xx && !8xx && !SPARC && !M68K && !PARISC && !ARCH_VERSATILE
+	depends on !ARCH_ACORN && !ARCH_EBSA110 && !4xx && !8xx && !SPARC && !M68K && !PARISC && !FRV && !ARCH_VERSATILE
 	default y
 	help
 	  Saying Y here will allow you to use Linux in text mode through a
diff -uNrp /warthog/kernels/linux-2.6.15/fs/Kconfig.binfmt linux-2.6.15-frv/fs/Kconfig.binfmt
--- /warthog/kernels/linux-2.6.15/fs/Kconfig.binfmt	2006-01-04 12:39:35.000000000 +0000
+++ linux-2.6.15-frv/fs/Kconfig.binfmt	2006-01-06 14:43:43.000000000 +0000
@@ -1,6 +1,6 @@
 config BINFMT_ELF
 	bool "Kernel support for ELF binaries"
-	depends on MMU
+	depends on MMU && (BROKEN || !FRV)
 	default y
 	---help---
 	  ELF (Executable and Linkable Format) is a format for libraries and

[PATCH 10/17] FRV: Force serial driver inclusion

[David Howells]

The attached patch forces the 8230 serial driver to be built in if the on-CPU
UARTs are to be used. It can't be used as a module because the arch setup
needs to call into it.

Signed-Off-By: David Howells <dhowells@redhat.com>
---
warthog>diffstat -p1 frv-serial-2615.diff
 arch/frv/Kconfig        |    5 +++++
 arch/frv/kernel/setup.c |    2 ++
 2 files changed, 7 insertions(+)

diff -uNrp /warthog/kernels/linux-2.6.15/arch/frv/Kconfig linux-2.6.15-frv/arch/frv/Kconfig
--- /warthog/kernels/linux-2.6.15/arch/frv/Kconfig	2005-08-30 13:56:10.000000000 +0100
+++ linux-2.6.15-frv/arch/frv/Kconfig	2006-01-06 14:43:43.000000000 +0000
@@ -274,6 +274,11 @@ config GPREL_DATA_NONE
 
 endchoice
 
+config FRV_ONCPU_SERIAL
+	bool "Use on-CPU serial ports"
+	select SERIAL_8250
+	default y
+
 config PCI
 	bool "Use PCI"
 	depends on MB93090_MB00
diff -uNrp /warthog/kernels/linux-2.6.15/arch/frv/kernel/setup.c linux-2.6.15-frv/arch/frv/kernel/setup.c
--- /warthog/kernels/linux-2.6.15/arch/frv/kernel/setup.c	2005-08-30 13:56:10.000000000 +0100
+++ linux-2.6.15-frv/arch/frv/kernel/setup.c	2006-01-06 14:43:43.000000000 +0000
@@ -787,6 +787,7 @@ void __init setup_arch(char **cmdline_p)
 #endif
 
 	/* register those serial ports that are available */
+#ifdef CONFIG_FRV_ONCPU_SERIAL
 #ifndef CONFIG_GDBSTUB_UART0
 	__reg(UART0_BASE + UART_IER * 8) = 0;
 	early_serial_setup(&__frv_uart0);
@@ -795,6 +796,7 @@ void __init setup_arch(char **cmdline_p)
 	__reg(UART1_BASE + UART_IER * 8) = 0;
 	early_serial_setup(&__frv_uart1);
 #endif
+#endif
 
 #if defined(CONFIG_CHR_DEV_FLASH) || defined(CONFIG_BLK_DEV_FLASH)
 	/* we need to initialize the Flashrom device here since we might

[PATCH 6/17] FRV: Supply various missing I/O access primitives

[David Howells]

The attached patch supplies various I/O access primitives that are missing for
the FRV arch:

 (*) mmiowb()

 (*) read*_relaxed()

 (*) ioport_*map()

 (*) ioread*(), iowrite*(), ioread*_rep() and iowrite*_rep()

 (*) pci_io*map()

 (*) check_signature()

The patch also makes __is_PCI_addr() more efficient.

Signed-Off-By: David Howells <dhowells@redhat.com>
---
warthog>diffstat -p1 frv-io-2615.diff
 include/asm-frv/io.h      |  123 ++++++++++++++++++++++++++++++++++++++++++++++
 include/asm-frv/mb-regs.h |    4 +
 2 files changed, 127 insertions(+)

diff -uNrp /warthog/kernels/linux-2.6.15/include/asm-frv/io.h linux-2.6.15-frv/include/asm-frv/io.h
--- /warthog/kernels/linux-2.6.15/include/asm-frv/io.h	2005-06-22 13:52:26.000000000 +0100
+++ linux-2.6.15-frv/include/asm-frv/io.h	2006-01-06 14:43:43.000000000 +0000
@@ -18,6 +18,7 @@
 #ifdef __KERNEL__
 
 #include <linux/config.h>
+#include <linux/types.h>
 #include <asm/virtconvert.h>
 #include <asm/string.h>
 #include <asm/mb-regs.h>
@@ -104,6 +105,8 @@ static inline void __insl(unsigned long 
 		__insl_sw(addr, buf, len);
 }
 
+#define mmiowb() mb()
+
 /*
  *	make the short names macros so specific devices
  *	can override them as required
@@ -209,6 +212,10 @@ static inline uint32_t readl(const volat
 	return ret;
 }
 
+#define readb_relaxed readb
+#define readw_relaxed readw
+#define readl_relaxed readl
+
 static inline void writeb(uint8_t datum, volatile void __iomem *addr)
 {
 	__builtin_write8((volatile uint8_t __force *) addr, datum);
@@ -268,11 +275,106 @@ static inline void __iomem *ioremap_full
 
 extern void iounmap(void __iomem *addr);
 
+static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
+{
+	return (void __iomem *) port;
+}
+
+static inline void ioport_unmap(void __iomem *p)
+{
+}
+
 static inline void flush_write_buffers(void)
 {
 	__asm__ __volatile__ ("membar" : : :"memory");
 }
 
+/*
+ * do appropriate I/O accesses for token type
+ */
+static inline unsigned int ioread8(void __iomem *p)
+{
+	return __builtin_read8(p);
+}
+
+static inline unsigned int ioread16(void __iomem *p)
+{
+	uint16_t ret = __builtin_read16(p);
+	if (__is_PCI_addr(p))
+		ret = _swapw(ret);
+	return ret;
+}
+
+static inline unsigned int ioread32(void __iomem *p)
+{
+	uint32_t ret = __builtin_read32(p);
+	if (__is_PCI_addr(p))
+		ret = _swapl(ret);
+	return ret;
+}
+
+static inline void iowrite8(u8 val, void __iomem *p)
+{
+	__builtin_write8(p, val);
+	if (__is_PCI_MEM(p))
+		__flush_PCI_writes();
+}
+
+static inline void iowrite16(u16 val, void __iomem *p)
+{
+	if (__is_PCI_addr(p))
+		val = _swapw(val);
+	__builtin_write16(p, val);
+	if (__is_PCI_MEM(p))
+		__flush_PCI_writes();
+}
+
+static inline void iowrite32(u32 val, void __iomem *p)
+{
+	if (__is_PCI_addr(p))
+		val = _swapl(val);
+	__builtin_write32(p, val);
+	if (__is_PCI_MEM(p))
+		__flush_PCI_writes();
+}
+
+static inline void ioread8_rep(void __iomem *p, void *dst, unsigned long count)
+{
+	io_insb((unsigned long) p, dst, count);
+}
+
+static inline void ioread16_rep(void __iomem *p, void *dst, unsigned long count)
+{
+	io_insw((unsigned long) p, dst, count);
+}
+
+static inline void ioread32_rep(void __iomem *p, void *dst, unsigned long count)
+{
+	__insl_ns((unsigned long) p, dst, count);
+}
+
+static inline void iowrite8_rep(void __iomem *p, const void *src, unsigned long count)
+{
+	io_outsb((unsigned long) p, src, count);
+}
+
+static inline void iowrite16_rep(void __iomem *p, const void *src, unsigned long count)
+{
+	io_outsw((unsigned long) p, src, count);
+}
+
+static inline void iowrite32_rep(void __iomem *p, const void *src, unsigned long count)
+{
+	__outsl_ns((unsigned long) p, src, count);
+}
+
+/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
+struct pci_dev;
+extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
+static inline void pci_iounmap(struct pci_dev *dev, void __iomem *p)
+{
+}
+
 
 /*
  * Convert a physical pointer to a virtual kernel pointer for /dev/mem
@@ -284,6 +386,27 @@ static inline void flush_write_buffers(v
  * Convert a virtual cached pointer to an uncached pointer
  */
 #define xlate_dev_kmem_ptr(p)	p
+ 
+/*
+ * Check BIOS signature
+ */
+static inline int check_signature(volatile void __iomem *io_addr,
+				  const unsigned char *signature, int length)
+{
+	int retval = 0;
+
+	do {
+		if (readb(io_addr) != *signature)
+			goto out;
+		io_addr++;
+		signature++;
+		length--;
+	} while (length);
+
+	retval = 1;
+out:
+	return retval;
+}
 
 #endif /* __KERNEL__ */
 
diff -uNrp /warthog/kernels/linux-2.6.15/include/asm-frv/mb-regs.h linux-2.6.15-frv/include/asm-frv/mb-regs.h
--- /warthog/kernels/linux-2.6.15/include/asm-frv/mb-regs.h	2005-03-02 12:08:45.000000000 +0000
+++ linux-2.6.15-frv/include/asm-frv/mb-regs.h	2006-01-06 14:43:43.000000000 +0000
@@ -68,6 +68,9 @@ do {									\
 #define __is_PCI_MEM(addr) \
 	((unsigned long)(addr) - __region_PCI_MEM < 0x08000000UL)
 
+#define __is_PCI_addr(addr) \
+	((unsigned long)(addr) - __region_PCI_IO < 0x0c000000UL)
+
 #define __get_CLKSW()	({ *(volatile unsigned long *)(__region_CS2 + 0x0130000cUL) & 0xffUL; })
 #define __get_CLKIN()	(__get_CLKSW() * 125U * 100000U / 24U)
 
@@ -149,6 +152,7 @@ do {									\
 
 #define __is_PCI_IO(addr)	0	/* no PCI */
 #define __is_PCI_MEM(addr)	0
+#define __is_PCI_addr(addr)	0
 #define __region_PCI_IO		0
 #define __region_PCI_MEM	0
 #define __flush_PCI_writes()	do { } while(0)

[PATCH 7/17] FRV: Add module support stubs

[David Howells]

The attached patch adds stubs for FRV module support. 

Signed-Off-By: David Howells <dhowells@redhat.com>
---
warthog>diffstat -p1 frv-modules-2615.diff
 arch/frv/kernel/Makefile |    1 
 arch/frv/kernel/module.c |   80 +++++++++++++++++++++++++++++++++++++++++++++++
 include/asm-frv/module.h |   16 +++++++--
 3 files changed, 93 insertions(+), 4 deletions(-)

diff -uNrp /warthog/kernels/linux-2.6.15/arch/frv/kernel/Makefile linux-2.6.15-frv/arch/frv/kernel/Makefile
--- /warthog/kernels/linux-2.6.15/arch/frv/kernel/Makefile	2005-03-02 12:07:44.000000000 +0000
+++ linux-2.6.15-frv/arch/frv/kernel/Makefile	2006-01-06 14:43:43.000000000 +0000
@@ -20,3 +20,4 @@ obj-$(CONFIG_FUJITSU_MB93493)	+= irq-mb9
 obj-$(CONFIG_PM)		+= pm.o cmode.o
 obj-$(CONFIG_MB93093_PDK)	+= pm-mb93093.o
 obj-$(CONFIG_SYSCTL)		+= sysctl.o
+obj-$(CONFIG_MODULES)		+= module.o
diff -uNrp /warthog/kernels/linux-2.6.15/arch/frv/kernel/module.c linux-2.6.15-frv/arch/frv/kernel/module.c
--- /warthog/kernels/linux-2.6.15/arch/frv/kernel/module.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.15-frv/arch/frv/kernel/module.c	2006-01-06 14:43:43.000000000 +0000
@@ -0,0 +1,80 @@
+/* module.c: FRV specific module loading bits
+ *
+ * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ * - Derived from arch/i386/kernel/module.c, Copyright (C) 2001 Rusty Russell.
+ *
+ * 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.
+ */
+#include <linux/moduleloader.h>
+#include <linux/elf.h>
+#include <linux/vmalloc.h>
+#include <linux/fs.h>
+#include <linux/string.h>
+#include <linux/kernel.h>
+
+#if 0
+#define DEBUGP printk
+#else
+#define DEBUGP(fmt...)
+#endif
+
+void *module_alloc(unsigned long size)
+{
+	if (size == 0)
+		return NULL;
+
+	return vmalloc_exec(size);
+}
+
+
+/* Free memory returned from module_alloc */
+void module_free(struct module *mod, void *module_region)
+{
+	vfree(module_region);
+	/* FIXME: If module_region == mod->init_region, trim exception
+           table entries. */
+}
+
+/* We don't need anything special. */
+int module_frob_arch_sections(Elf_Ehdr *hdr,
+			      Elf_Shdr *sechdrs,
+			      char *secstrings,
+			      struct module *mod)
+{
+	return 0;
+}
+
+int apply_relocate(Elf32_Shdr *sechdrs,
+		   const char *strtab,
+		   unsigned int symindex,
+		   unsigned int relsec,
+		   struct module *me)
+{
+	printk(KERN_ERR "module %s: ADD RELOCATION unsupported\n", me->name);
+	return -ENOEXEC;
+}
+
+int apply_relocate_add(Elf32_Shdr *sechdrs,
+		       const char *strtab,
+		       unsigned int symindex,
+		       unsigned int relsec,
+		       struct module *me)
+{
+	printk(KERN_ERR "module %s: ADD RELOCATION unsupported\n", me->name);
+	return -ENOEXEC;
+}
+
+int module_finalize(const Elf_Ehdr *hdr,
+		    const Elf_Shdr *sechdrs,
+		    struct module *me)
+{
+	return 0;
+}
+
+void module_arch_cleanup(struct module *mod)
+{
+}
diff -uNrp /warthog/kernels/linux-2.6.15/include/asm-frv/module.h linux-2.6.15-frv/include/asm-frv/module.h
--- /warthog/kernels/linux-2.6.15/include/asm-frv/module.h	2005-03-02 12:08:45.000000000 +0000
+++ linux-2.6.15-frv/include/asm-frv/module.h	2006-01-06 14:43:43.000000000 +0000
@@ -11,10 +11,18 @@
 #ifndef _ASM_MODULE_H
 #define _ASM_MODULE_H
 
-#define module_map(x)		vmalloc(x)
-#define module_unmap(x)		vfree(x)
-#define module_arch_init(x)	(0)
-#define arch_init_modules(x)	do { } while (0)
+struct mod_arch_specific
+{
+};
+
+#define Elf_Shdr	Elf32_Shdr
+#define Elf_Sym		Elf32_Sym
+#define Elf_Ehdr	Elf32_Ehdr
+
+/*
+ * Include the architecture version.
+ */
+#define MODULE_ARCH_VERMAGIC __stringify(PROCESSOR_MODEL_NAME) " "
 
 #endif /* _ASM_MODULE_H */
 

[PATCH 9/17] FRV: Fix PCMCIA configuration

[David Howells]

The attached patch fixes PCMCIA configuration for FRV by including the stock
PCMCIA configuration description file.

Signed-Off-By: David Howells <dhowells@redhat.com>
---
warthog>diffstat -p1 frv-pcmcia-2615.diff
 arch/frv/Kconfig |   18 +-----------------
 1 files changed, 1 insertion(+), 17 deletions(-)

diff -uNrp /warthog/kernels/linux-2.6.15/arch/frv/Kconfig linux-2.6.15-frv/arch/frv/Kconfig
--- /warthog/kernels/linux-2.6.15/arch/frv/Kconfig	2005-08-30 13:56:10.000000000 +0100
+++ linux-2.6.15-frv/arch/frv/Kconfig	2006-01-06 14:43:43.000000000 +0000
@@ -305,23 +310,7 @@ config RESERVE_DMA_COHERENT
 
 source "drivers/pci/Kconfig"
 
-config PCMCIA
-	tristate "Use PCMCIA"
-	help
-	  Say Y here if you want to attach PCMCIA- or PC-cards to your FR-V
-	  board.  These are credit-card size devices such as network cards,
-	  modems or hard drives often used with laptops computers.  There are
-	  actually two varieties of these cards: the older 16 bit PCMCIA cards
-	  and the newer 32 bit CardBus cards.  If you want to use CardBus
-	  cards, you need to say Y here and also to "CardBus support" below.
-
-	  To use your PC-cards, you will need supporting software from David
-	  Hinds pcmcia-cs package (see the file <file:Documentation/Changes>
-	  for location).  Please also read the PCMCIA-HOWTO, available from
-	  <http://www.tldp.org/docs.html#howto>.
-
-	  To compile this driver as modules, choose M here: the
-	  modules will be called pcmcia_core and ds.
+source "drivers/pcmcia/Kconfig"
 
 #config MATH_EMULATION
 #	bool "Math emulation support (EXPERIMENTAL)"

[PATCH 8/17] FRV: Add pci_iomap

[David Howells]

The attached patch implements pci_iomap() for FRV.

Signed-Off-By: David Howells <dhowells@redhat.com>
---
warthog>diffstat -p1 frv-pci-iomap-2615.diff
 arch/frv/mb93090-mb00/Makefile    |    2 +-
 arch/frv/mb93090-mb00/pci-iomap.c |   29 +++++++++++++++++++++++++++++
 2 files changed, 30 insertions(+), 1 deletion(-)

diff -uNrp /warthog/kernels/linux-2.6.15/arch/frv/mb93090-mb00/Makefile linux-2.6.15-frv/arch/frv/mb93090-mb00/Makefile
--- /warthog/kernels/linux-2.6.15/arch/frv/mb93090-mb00/Makefile	2005-03-02 12:07:44.000000000 +0000
+++ linux-2.6.15-frv/arch/frv/mb93090-mb00/Makefile	2006-01-06 14:43:43.000000000 +0000
@@ -3,7 +3,7 @@
 #
 
 ifeq "$(CONFIG_PCI)" "y"
-obj-y := pci-frv.o pci-irq.o pci-vdk.o
+obj-y := pci-frv.o pci-irq.o pci-vdk.o pci-iomap.o
 
 ifeq "$(CONFIG_MMU)" "y"
 obj-y += pci-dma.o
diff -uNrp /warthog/kernels/linux-2.6.15/arch/frv/mb93090-mb00/pci-iomap.c linux-2.6.15-frv/arch/frv/mb93090-mb00/pci-iomap.c
--- /warthog/kernels/linux-2.6.15/arch/frv/mb93090-mb00/pci-iomap.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.15-frv/arch/frv/mb93090-mb00/pci-iomap.c	2006-01-06 14:43:43.000000000 +0000
@@ -0,0 +1,29 @@
+/* pci-iomap.c: description
+ *
+ * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * 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.
+ */
+#include <linux/pci.h>
+#include <linux/module.h>
+
+void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
+{
+	unsigned long start = pci_resource_start(dev, bar);
+	unsigned long len = pci_resource_len(dev, bar);
+	unsigned long flags = pci_resource_flags(dev, bar);
+
+	if (!len || !start)
+		return NULL;
+
+	if ((flags & IORESOURCE_IO) || (flags & IORESOURCE_MEM))
+		return (void __iomem *) start;
+
+	return NULL;
+}
+
+EXPORT_SYMBOL(pci_iomap);

[PATCH 5/17] FRV: Support module exception tables

[David Howells]

The attached patch fixes the exception table handling so that modules
exceptions are dealt with.

Signed-Off-By: David Howells <dhowells@redhat.com>
---
warthog>diffstat -p1 frv-extab-2615.diff
 arch/frv/mm/extable.c |   34 +++++++++-------------------------
 1 files changed, 9 insertions(+), 25 deletions(-)

diff -uNrp /warthog/kernels/linux-2.6.15/arch/frv/mm/extable.c linux-2.6.15-frv/arch/frv/mm/extable.c
--- /warthog/kernels/linux-2.6.15/arch/frv/mm/extable.c	2005-03-02 12:07:44.000000000 +0000
+++ linux-2.6.15-frv/arch/frv/mm/extable.c	2006-01-06 14:43:43.000000000 +0000
@@ -43,7 +43,7 @@ static inline unsigned long search_one_t
  */
 unsigned long search_exception_table(unsigned long pc)
 {
-	unsigned long ret = 0;
+	const struct exception_table_entry *extab;
 
 	/* determine if the fault lay during a memcpy_user or a memset_user */
 	if (__frame->lr == (unsigned long) &__memset_user_error_lr &&
@@ -55,9 +55,10 @@ unsigned long search_exception_table(uns
 		 */
 		return (unsigned long) &__memset_user_error_handler;
 	}
-	else if (__frame->lr == (unsigned long) &__memcpy_user_error_lr &&
-		 (unsigned long) &memcpy <= pc && pc < (unsigned long) &__memcpy_end
-		 ) {
+
+	if (__frame->lr == (unsigned long) &__memcpy_user_error_lr &&
+	    (unsigned long) &memcpy <= pc && pc < (unsigned long) &__memcpy_end
+	    ) {
 		/* the fault occurred in a protected memset
 		 * - we search for the return address (in LR) instead of the program counter
 		 * - it was probably during a copy_to/from_user()
@@ -65,27 +66,10 @@ unsigned long search_exception_table(uns
 		return (unsigned long) &__memcpy_user_error_handler;
 	}
 
-#ifndef CONFIG_MODULES
-	/* there is only the kernel to search.  */
-	ret = search_one_table(__start___ex_table, __stop___ex_table - 1, pc);
-	return ret;
-
-#else
-	/* the kernel is the last "module" -- no need to treat it special */
-	unsigned long flags;
-	struct module *mp;
+	extab = search_exception_tables(pc);
+	if (extab)
+		return extab->fixup;
 
-	spin_lock_irqsave(&modlist_lock, flags);
-
-	for (mp = module_list; mp != NULL; mp = mp->next) {
-		if (mp->ex_table_start == NULL || !(mp->flags & (MOD_RUNNING | MOD_INITIALIZING)))
-			continue;
-		ret = search_one_table(mp->ex_table_start, mp->ex_table_end - 1, pc);
-		if (ret)
-			break;
-	}
+	return 0;
 
-	spin_unlock_irqrestore(&modlist_lock, flags);
-	return ret;
-#endif
 } /* end search_exception_table() */

[PATCH 16/17] FRV: Fix uninitialised variable in serverworks driver

[David Howells]

The attached patch fixes an uninitialised variable warning in the serverworks
driver.

Signed-Off-By: David Howells <dhowells@redhat.com>
---
warthog>diffstat -p1 serverworks-2615.diff
 drivers/ide/pci/serverworks.c |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)

diff -uNrp /warthog/kernels/linux-2.6.15/drivers/ide/pci/serverworks.c linux-2.6.15-frv/drivers/ide/pci/serverworks.c
--- /warthog/kernels/linux-2.6.15/drivers/ide/pci/serverworks.c	2005-08-30 13:56:16.000000000 +0100
+++ linux-2.6.15-frv/drivers/ide/pci/serverworks.c	2006-01-06 14:43:43.000000000 +0000
@@ -69,7 +69,7 @@ static int check_in_drive_lists (ide_dri
 static u8 svwks_ratemask (ide_drive_t *drive)
 {
 	struct pci_dev *dev     = HWIF(drive)->pci_dev;
-	u8 mode;
+	u8 mode = 0;
 
 	if (!svwks_revision)
 		pci_read_config_byte(dev, PCI_REVISION_ID, &svwks_revision);

[PATCH 14/17] FRV: Stop the IEEE1394 nodemanager from accessing sem count directly

[David Howells]

The attached patch stops the IEEE1394 nodemanager from accessing the internals
of a semaphore directly. On the FRV arch, what it does does not work, and
there's a macro for doing what it wants.

Signed-Off-By: David Howells <dhowells@redhat.com>
---
warthog>diffstat -p1 ieee1394-2615.diff
 drivers/ieee1394/nodemgr.c |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)

diff -uNrp /warthog/kernels/linux-2.6.15/drivers/ieee1394/nodemgr.c linux-2.6.15-frv/drivers/ieee1394/nodemgr.c
--- /warthog/kernels/linux-2.6.15/drivers/ieee1394/nodemgr.c	2006-01-04 12:39:26.000000000 +0000
+++ linux-2.6.15-frv/drivers/ieee1394/nodemgr.c	2006-01-06 14:43:43.000000000 +0000
@@ -284,7 +284,7 @@ static DEVICE_ATTR(bus_options,S_IRUGO,f
 static ssize_t fw_show_ne_tlabels_free(struct device *dev, struct device_attribute *attr, char *buf)
 {
 	struct node_entry *ne = container_of(dev, struct node_entry, device);
-	return sprintf(buf, "%d\n", atomic_read(&ne->tpool->count.count) + 1);
+	return sprintf(buf, "%d\n", sem_getcount(&ne->tpool->count) + 1);
 }
 static DEVICE_ATTR(tlabels_free,S_IRUGO,fw_show_ne_tlabels_free,NULL);
 

[PATCH 12/17] FRV: Miscellaneous changes

[David Howells]

The attached patch fixes a number of miscellanous items:

 (1) Declare lock sections in the linker script.

 (2) Recurse in the correct manner in the arch makefile.

 (3) asm/bug.h requires asm/linkage.h to be included first. One C file puts
     asm/bug.h first.

 (4) Add an empty RTC header file to avoid missing header file errors.

 (5) sg_dma_address() should use the dma_address member of a scatter list.

 (6) Add trivial pci_unmap support.

 (7) Add pgprot_noncached()

 (8) Discard u_quad_t.

 (9) Use ~0UL rather than ULONG_MAX in unistd.h in case the latter isn't
     declared.

(10) Add an empty VGA header file to avoid missing header file errors.

(11) Add an XOR header file to use the generic XOR stuff.

Signed-Off-By: David Howells <dhowells@redhat.com>
---
warthog>diffstat -p1 frv-misc-2615.diff
 arch/frv/Makefile             |    6 +++---
 arch/frv/kernel/vmlinux.lds.S |    1 +
 include/asm-frv/bug.h         |    1 +
 include/asm-frv/dma-mapping.h |    2 +-
 include/asm-frv/mc146818rtc.h |   16 ++++++++++++++++
 include/asm-frv/pci.h         |    8 ++++++++
 include/asm-frv/pgtable.h     |    5 +++++
 include/asm-frv/types.h       |    1 -
 include/asm-frv/unistd.h      |    2 +-
 include/asm-frv/vga.h         |   17 +++++++++++++++++
 include/asm-frv/xor.h         |    1 +
 11 files changed, 54 insertions(+), 6 deletions(-)

diff -uNrp /warthog/kernels/linux-2.6.15/arch/frv/kernel/vmlinux.lds.S linux-2.6.15-frv/arch/frv/kernel/vmlinux.lds.S
--- /warthog/kernels/linux-2.6.15/arch/frv/kernel/vmlinux.lds.S	2005-03-02 12:07:44.000000000 +0000
+++ linux-2.6.15-frv/arch/frv/kernel/vmlinux.lds.S	2006-01-06 14:43:43.000000000 +0000
@@ -112,6 +112,7 @@ SECTIONS
 #endif
 	)
 	SCHED_TEXT
+	LOCK_TEXT
 	*(.fixup)
 	*(.gnu.warning)
 	*(.exitcall.exit)
diff -uNrp /warthog/kernels/linux-2.6.15/arch/frv/Makefile linux-2.6.15-frv/arch/frv/Makefile
--- /warthog/kernels/linux-2.6.15/arch/frv/Makefile	2005-03-02 12:07:44.000000000 +0000
+++ linux-2.6.15-frv/arch/frv/Makefile	2006-01-06 14:43:43.000000000 +0000
@@ -109,10 +109,10 @@ bootstrap:
 	$(Q)$(MAKEBOOT) bootstrap
 
 archmrproper:
-	$(Q)$(MAKE) -C arch/frv/boot mrproper
+	$(Q)$(MAKE) $(build)=arch/frv/boot mrproper
 
 archclean:
-	$(Q)$(MAKE) -C arch/frv/boot clean
+	$(Q)$(MAKE) $(build)=arch/frv/boot clean
 
 archdep: scripts/mkdep symlinks
-	$(Q)$(MAKE) -C arch/frv/boot dep
+	$(Q)$(MAKE) $(build)=arch/frv/boot dep
diff -uNrp /warthog/kernels/linux-2.6.15/include/asm-frv/bug.h linux-2.6.15-frv/include/asm-frv/bug.h
--- /warthog/kernels/linux-2.6.15/include/asm-frv/bug.h	2005-06-22 13:52:26.000000000 +0100
+++ linux-2.6.15-frv/include/asm-frv/bug.h	2006-01-06 14:43:43.000000000 +0000
@@ -12,6 +12,7 @@
 #define _ASM_BUG_H
 
 #include <linux/config.h>
+#include <linux/linkage.h>
 
 #ifdef CONFIG_BUG
 /*
diff -uNrp /warthog/kernels/linux-2.6.15/include/asm-frv/mc146818rtc.h linux-2.6.15-frv/include/asm-frv/mc146818rtc.h
--- /warthog/kernels/linux-2.6.15/include/asm-frv/mc146818rtc.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.15-frv/include/asm-frv/mc146818rtc.h	2006-01-06 14:43:43.000000000 +0000
@@ -0,0 +1,16 @@
+/* mc146818rtc.h: RTC defs
+ *
+ * Copyright (C) 2005 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * 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.
+ */
+
+#ifndef _ASM_MC146818RTC_H
+#define _ASM_MC146818RTC_H
+
+
+#endif /* _ASM_MC146818RTC_H */
diff -uNrp /warthog/kernels/linux-2.6.15/include/asm-frv/dma-mapping.h linux-2.6.15-frv/include/asm-frv/dma-mapping.h
--- /warthog/kernels/linux-2.6.15/include/asm-frv/dma-mapping.h	2006-01-04 12:39:38.000000000 +0000
+++ linux-2.6.15-frv/include/asm-frv/dma-mapping.h	2006-01-06 14:43:43.000000000 +0000
@@ -23,7 +23,7 @@ void dma_free_coherent(struct device *de
  * returns, or alternatively stop on the first sg_dma_len(sg) which
  * is 0.
  */
-#define sg_dma_address(sg)	((unsigned long) (page_to_phys((sg)->page) + (sg)->offset))
+#define sg_dma_address(sg)	((sg)->dma_address)
 #define sg_dma_len(sg)		((sg)->length)
 
 /*
diff -uNrp /warthog/kernels/linux-2.6.15/include/asm-frv/pci.h linux-2.6.15-frv/include/asm-frv/pci.h
--- /warthog/kernels/linux-2.6.15/include/asm-frv/pci.h	2006-01-04 12:39:38.000000000 +0000
+++ linux-2.6.15-frv/include/asm-frv/pci.h	2006-01-06 14:43:43.000000000 +0000
@@ -57,6 +57,14 @@ extern void pci_free_consistent(struct p
  */
 #define PCI_DMA_BUS_IS_PHYS	(1)
 
+/* pci_unmap_{page,single} is a nop so... */
+#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
+#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
+#define pci_unmap_addr(PTR, ADDR_NAME)		(0)
+#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL)	do { } while (0)
+#define pci_unmap_len(PTR, LEN_NAME)		(0)
+#define pci_unmap_len_set(PTR, LEN_NAME, VAL)	do { } while (0)
+
 #ifdef CONFIG_PCI
 static inline void pci_dma_burst_advice(struct pci_dev *pdev,
 					enum pci_dma_burst_strategy *strat,
diff -uNrp /warthog/kernels/linux-2.6.15/include/asm-frv/pgtable.h linux-2.6.15-frv/include/asm-frv/pgtable.h
--- /warthog/kernels/linux-2.6.15/include/asm-frv/pgtable.h	2006-01-04 12:39:38.000000000 +0000
+++ linux-2.6.15-frv/include/asm-frv/pgtable.h	2006-01-06 14:43:43.000000000 +0000
@@ -421,6 +421,11 @@ static inline void ptep_set_wrprotect(st
 }
 
 /*
+ * Macro to mark a page protection value as "uncacheable"
+ */
+#define pgprot_noncached(prot) (__pgprot(pgprot_val(prot) | _PAGE_NOCACHE))
+
+/*
  * Conversion functions: convert a page and protection to a page entry,
  * and a page entry and page directory to the page they refer to.
  */
diff -uNrp /warthog/kernels/linux-2.6.15/include/asm-frv/types.h linux-2.6.15-frv/include/asm-frv/types.h
--- /warthog/kernels/linux-2.6.15/include/asm-frv/types.h	2005-11-01 13:19:17.000000000 +0000
+++ linux-2.6.15-frv/include/asm-frv/types.h	2006-01-06 14:43:43.000000000 +0000
@@ -59,7 +59,6 @@ typedef unsigned int u32;
 
 typedef signed long long s64;
 typedef unsigned long long u64;
-typedef u64 u_quad_t;
 
 /* Dma addresses are 32-bits wide.  */
 
diff -uNrp /warthog/kernels/linux-2.6.15/include/asm-frv/unistd.h linux-2.6.15-frv/include/asm-frv/unistd.h
--- /warthog/kernels/linux-2.6.15/include/asm-frv/unistd.h	2005-06-22 13:52:26.000000000 +0100
+++ linux-2.6.15-frv/include/asm-frv/unistd.h	2006-01-06 14:43:43.000000000 +0000
@@ -313,7 +313,7 @@ do {									\
         unsigned long __sr2 = (res);					\
 	if (__builtin_expect(__sr2 >= (unsigned long)(-4095), 0)) {	\
 		errno = (-__sr2);					\
-		__sr2 = ULONG_MAX;					\
+		__sr2 = ~0UL;						\
 	}								\
 	return (type) __sr2;						\
 } while (0)
diff -uNrp /warthog/kernels/linux-2.6.15/include/asm-frv/vga.h linux-2.6.15-frv/include/asm-frv/vga.h
--- /warthog/kernels/linux-2.6.15/include/asm-frv/vga.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.15-frv/include/asm-frv/vga.h	2006-01-06 14:43:43.000000000 +0000
@@ -0,0 +1,17 @@
+/* vga.h: VGA register stuff
+ *
+ * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * 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.
+ */
+
+#ifndef _ASM_VGA_H
+#define _ASM_VGA_H
+
+
+
+#endif /* _ASM_VGA_H */
diff -uNrp /warthog/kernels/linux-2.6.15/include/asm-frv/xor.h linux-2.6.15-frv/include/asm-frv/xor.h
--- /warthog/kernels/linux-2.6.15/include/asm-frv/xor.h	1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.15-frv/include/asm-frv/xor.h	2006-01-06 14:43:43.000000000 +0000
@@ -0,0 +1 @@
+#include <asm-generic/xor.h>

[PATCH 11/17] FRV: Make get_user macro cast pointers

[David Howells]

The attached patch makes the get_user macro cast the source pointer to an
appropriate type for the specified size.

Signed-Off-By: David Howells <dhowells@redhat.com>
---
warthog>diffstat -p1 frv-uaccess-2615.diff
 include/asm-frv/uaccess.h |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff -uNrp /warthog/kernels/linux-2.6.15/include/asm-frv/uaccess.h linux-2.6.15-frv/include/asm-frv/uaccess.h
--- /warthog/kernels/linux-2.6.15/include/asm-frv/uaccess.h	2005-11-01 13:19:17.000000000 +0000
+++ linux-2.6.15-frv/include/asm-frv/uaccess.h	2006-01-06 14:43:43.000000000 +0000
@@ -180,16 +180,16 @@ do {						\
 									\
 	switch (sizeof(*(ptr))) {					\
 	case 1:								\
-		__get_user_asm(__gu_err, __gu_val, ptr, "ub", "=r");	\
+		__get_user_asm(__gu_err, *(u8*)&__gu_val, ptr, "ub", "=r"); \
 		break;							\
 	case 2:								\
-		__get_user_asm(__gu_err, __gu_val, ptr, "uh", "=r");	\
+		__get_user_asm(__gu_err, *(u16*)&__gu_val, ptr, "uh", "=r"); \
 		break;							\
 	case 4:								\
-		__get_user_asm(__gu_err, __gu_val, ptr, "", "=r");	\
+		__get_user_asm(__gu_err, *(u32*)&__gu_val, ptr, "", "=r"); \
 		break;							\
 	case 8:								\
-		__get_user_asm(__gu_err, __gu_val, ptr, "d", "=e");	\
+		__get_user_asm(__gu_err, *(u64*)&__gu_val, ptr, "d", "=e"); \
 		break;							\
 	default:							\
 		__gu_err = __get_user_bad();				\

[PATCH 15/17] FRV: Export __rcuref_hash

[David Howells]

The attached patch exports __rcuref_hash which is required by some modules.

Signed-Off-By: David Howells <dhowells@redhat.com>
---
warthog>diffstat -p1 rcu-export-2615.diff
 kernel/rcupdate.c |    1 +
 1 files changed, 1 insertion(+)

diff -uNrp /warthog/kernels/linux-2.6.15/kernel/rcupdate.c linux-2.6.15-frv/kernel/rcupdate.c
--- /warthog/kernels/linux-2.6.15/kernel/rcupdate.c	2006-01-04 12:39:43.000000000 +0000
+++ linux-2.6.15-frv/kernel/rcupdate.c	2006-01-06 14:43:43.000000000 +0000
@@ -564,3 +564,4 @@ EXPORT_SYMBOL(call_rcu);  /* WARNING: GP
 EXPORT_SYMBOL(call_rcu_bh);  /* WARNING: GPL-only in April 2006. */
 EXPORT_SYMBOL_GPL(synchronize_rcu);
 EXPORT_SYMBOL(synchronize_kernel);  /* WARNING: GPL-only in April 2006. */
+EXPORT_SYMBOL_GPL(__rcuref_hash);

Re: [PATCH 15/17] FRV: Export __rcuref_hash

[Eric Dumazet]

David Howells a écrit :
> The attached patch exports __rcuref_hash which is required by some modules.
> 
> Signed-Off-By: David Howells <dhowells@redhat.com>
> ---
> warthog>diffstat -p1 rcu-export-2615.diff
>  kernel/rcupdate.c |    1 +
>  1 files changed, 1 insertion(+)
> 
> diff -uNrp /warthog/kernels/linux-2.6.15/kernel/rcupdate.c linux-2.6.15-frv/kernel/rcupdate.c
> --- /warthog/kernels/linux-2.6.15/kernel/rcupdate.c	2006-01-04 12:39:43.000000000 +0000
> +++ linux-2.6.15-frv/kernel/rcupdate.c	2006-01-06 14:43:43.000000000 +0000
> @@ -564,3 +564,4 @@ EXPORT_SYMBOL(call_rcu);  /* WARNING: GP
>  EXPORT_SYMBOL(call_rcu_bh);  /* WARNING: GPL-only in April 2006. */
>  EXPORT_SYMBOL_GPL(synchronize_rcu);
>  EXPORT_SYMBOL(synchronize_kernel);  /* WARNING: GPL-only in April 2006. */
> +EXPORT_SYMBOL_GPL(__rcuref_hash);

NACK

This break all platforms were __HAVE_ARCH_CMPXCHG is defined, since they have 
no __rcuref_hash

Eric

[PATCH 13/17] FRV: Fix uninitialised variable in atm nicstar driver

[David Howells]

The attached patch fixes an uninitialised variable warning in the atm nicstar
driver.

Signed-Off-By: David Howells <dhowells@redhat.com>
---
warthog>diffstat -p1 atm-nicstar-2615.diff
 drivers/atm/nicstar.c |    5 ++---
 1 files changed, 2 insertions(+), 3 deletions(-)

diff -uNrp /warthog/kernels/linux-2.6.15/drivers/atm/nicstar.c linux-2.6.15-frv/drivers/atm/nicstar.c
--- /warthog/kernels/linux-2.6.15/drivers/atm/nicstar.c	2005-11-01 13:19:04.000000000 +0000
+++ linux-2.6.15-frv/drivers/atm/nicstar.c	2006-01-06 14:43:43.000000000 +0000
@@ -2126,8 +2126,7 @@ static void process_rsq(ns_dev *card)
 
    if (!ns_rsqe_valid(card->rsq.next))
       return;
-   while (ns_rsqe_valid(card->rsq.next))
-   {
+   do {
       dequeue_rx(card, card->rsq.next);
       ns_rsqe_init(card->rsq.next);
       previous = card->rsq.next;
@@ -2135,7 +2134,7 @@ static void process_rsq(ns_dev *card)
          card->rsq.next = card->rsq.base;
       else
          card->rsq.next++;
-   }
+   } while (ns_rsqe_valid(card->rsq.next));
    writel((((u32) previous) - ((u32) card->rsq.base)),
           card->membase + RSQH);
 }

[PATCH 17/17] FRV: Stop XFS from accessing sem count directly

[David Howells]

The attached patch stops the XFS from accessing the internals of a semaphore
directly. On the FRV arch, which XFS does does not work. This alternative
implementation was supplied by Al Viro.

If Ingo Molnar's mutexes are going to be accepted into the kernel, then this
patch should be dropped.

Signed-Off-By: David Howells <dhowells@redhat.com>
---
warthog>diffstat -p1 xfs-sema-2615.diff
 fs/xfs/linux-2.6/sema.h       |    5 ++++-
 fs/xfs/quota/xfs_dquot.h      |    4 ++--
 fs/xfs/quota/xfs_dquot_item.c |    4 ++--
 fs/xfs/xfs_iget.c             |    2 +-
 fs/xfs/xfs_inode.c            |    4 ++--
 fs/xfs/xfs_inode_item.c       |    6 +++---
 6 files changed, 14 insertions(+), 11 deletions(-)

diff -uNrp /warthog/kernels/linux-2.6.15/fs/xfs/linux-2.6/sema.h linux-2.6.15-frv/fs/xfs/linux-2.6/sema.h
--- /warthog/kernels/linux-2.6.15/fs/xfs/linux-2.6/sema.h	2006-01-04 12:39:36.000000000 +0000
+++ linux-2.6.15-frv/fs/xfs/linux-2.6/sema.h	2006-01-06 14:43:43.000000000 +0000
@@ -34,8 +34,11 @@ typedef struct semaphore sema_t;
 #define initnsema(sp, val, name)	sema_init(sp, val)
 #define psema(sp, b)			down(sp)
 #define vsema(sp)			up(sp)
-#define valusema(sp)			(atomic_read(&(sp)->count))
 #define freesema(sema)
+static inline int sem_is_locked(sema_t *sp)
+{
+	return down_trylock(sp) || (up(sp), 0);
+}
 
 /*
  * Map cpsema (try to get the sema) to down_trylock. We need to switch
diff -uNrp /warthog/kernels/linux-2.6.15/fs/xfs/quota/xfs_dquot.h linux-2.6.15-frv/fs/xfs/quota/xfs_dquot.h
--- /warthog/kernels/linux-2.6.15/fs/xfs/quota/xfs_dquot.h	2006-01-04 12:39:36.000000000 +0000
+++ linux-2.6.15-frv/fs/xfs/quota/xfs_dquot.h	2006-01-06 14:43:43.000000000 +0000
@@ -119,7 +119,7 @@ XFS_DQ_IS_LOCKED(xfs_dquot_t *dqp)
  */
 #define xfs_dqflock(dqp)	 { psema(&((dqp)->q_flock), PINOD | PRECALC);\
 				   (dqp)->dq_flags |= XFS_DQ_FLOCKED; }
-#define xfs_dqfunlock(dqp)	 { ASSERT(valusema(&((dqp)->q_flock)) <= 0); \
+#define xfs_dqfunlock(dqp)	 { ASSERT(sem_is_locked(&((dqp)->q_flock))); \
 				   vsema(&((dqp)->q_flock)); \
 				   (dqp)->dq_flags &= ~(XFS_DQ_FLOCKED); }
 
@@ -128,7 +128,7 @@ XFS_DQ_IS_LOCKED(xfs_dquot_t *dqp)
 #define XFS_DQ_PINUNLOCK(dqp, s)   mutex_spinunlock( \
 				     &(XFS_DQ_TO_QINF(dqp)->qi_pinlock), s)
 
-#define XFS_DQ_IS_FLUSH_LOCKED(dqp) (valusema(&((dqp)->q_flock)) <= 0)
+#define XFS_DQ_IS_FLUSH_LOCKED(dqp) (sem_is_locked(&((dqp)->q_flock)))
 #define XFS_DQ_IS_ON_FREELIST(dqp)  ((dqp)->dq_flnext != (dqp))
 #define XFS_DQ_IS_DIRTY(dqp)	((dqp)->dq_flags & XFS_DQ_DIRTY)
 #define XFS_QM_ISUDQ(dqp)	((dqp)->dq_flags & XFS_DQ_USER)
diff -uNrp /warthog/kernels/linux-2.6.15/fs/xfs/quota/xfs_dquot_item.c linux-2.6.15-frv/fs/xfs/quota/xfs_dquot_item.c
--- /warthog/kernels/linux-2.6.15/fs/xfs/quota/xfs_dquot_item.c	2006-01-04 12:39:36.000000000 +0000
+++ linux-2.6.15-frv/fs/xfs/quota/xfs_dquot_item.c	2006-01-06 14:43:43.000000000 +0000
@@ -246,7 +246,7 @@ xfs_qm_dquot_logitem_pushbuf(
 	 * inode flush completed and the inode was taken off the AIL.
 	 * So, just get out.
 	 */
-	if ((valusema(&(dqp->q_flock)) > 0)  ||
+	if (!sem_is_locked(&(dqp->q_flock))  ||
 	    ((qip->qli_item.li_flags & XFS_LI_IN_AIL) == 0)) {
 		qip->qli_pushbuf_flag = 0;
 		xfs_dqunlock(dqp);
@@ -259,7 +259,7 @@ xfs_qm_dquot_logitem_pushbuf(
 	if (bp != NULL) {
 		if (XFS_BUF_ISDELAYWRITE(bp)) {
 			dopush = ((qip->qli_item.li_flags & XFS_LI_IN_AIL) &&
-				  (valusema(&(dqp->q_flock)) <= 0));
+				  sem_is_locked(&(dqp->q_flock)));
 			qip->qli_pushbuf_flag = 0;
 			xfs_dqunlock(dqp);
 
diff -uNrp /warthog/kernels/linux-2.6.15/fs/xfs/xfs_iget.c linux-2.6.15-frv/fs/xfs/xfs_iget.c
--- /warthog/kernels/linux-2.6.15/fs/xfs/xfs_iget.c	2006-01-04 12:39:37.000000000 +0000
+++ linux-2.6.15-frv/fs/xfs/xfs_iget.c	2006-01-06 14:43:43.000000000 +0000
@@ -1041,6 +1041,6 @@ xfs_iflock_nowait(xfs_inode_t *ip)
 void
 xfs_ifunlock(xfs_inode_t *ip)
 {
-	ASSERT(valusema(&(ip->i_flock)) <= 0);
+	ASSERT(sem_is_locked(&(ip->i_flock)));
 	vsema(&(ip->i_flock));
 }
diff -uNrp /warthog/kernels/linux-2.6.15/fs/xfs/xfs_inode.c linux-2.6.15-frv/fs/xfs/xfs_inode.c
--- /warthog/kernels/linux-2.6.15/fs/xfs/xfs_inode.c	2006-01-04 12:39:37.000000000 +0000
+++ linux-2.6.15-frv/fs/xfs/xfs_inode.c	2006-01-06 14:43:43.000000000 +0000
@@ -3061,7 +3061,7 @@ xfs_iflush(
 	XFS_STATS_INC(xs_iflush_count);
 
 	ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE|MR_ACCESS));
-	ASSERT(valusema(&ip->i_flock) <= 0);
+	ASSERT(sem_is_locked(&(ip->i_flock)));
 	ASSERT(ip->i_d.di_format != XFS_DINODE_FMT_BTREE ||
 	       ip->i_d.di_nextents > ip->i_df.if_ext_max);
 
@@ -3319,7 +3319,7 @@ xfs_iflush_int(
 	SPLDECL(s);
 
 	ASSERT(ismrlocked(&ip->i_lock, MR_UPDATE|MR_ACCESS));
-	ASSERT(valusema(&ip->i_flock) <= 0);
+	ASSERT(sem_is_locked(&(ip->i_flock)));
 	ASSERT(ip->i_d.di_format != XFS_DINODE_FMT_BTREE ||
 	       ip->i_d.di_nextents > ip->i_df.if_ext_max);
 
diff -uNrp /warthog/kernels/linux-2.6.15/fs/xfs/xfs_inode_item.c linux-2.6.15-frv/fs/xfs/xfs_inode_item.c
--- /warthog/kernels/linux-2.6.15/fs/xfs/xfs_inode_item.c	2006-01-04 12:39:37.000000000 +0000
+++ linux-2.6.15-frv/fs/xfs/xfs_inode_item.c	2006-01-06 14:43:43.000000000 +0000
@@ -789,7 +789,7 @@ xfs_inode_item_pushbuf(
 	 * inode flush completed and the inode was taken off the AIL.
 	 * So, just get out.
 	 */
-	if ((valusema(&(ip->i_flock)) > 0)  ||
+	if (!sem_is_locked(&(ip->i_flock)) ||
 	    ((iip->ili_item.li_flags & XFS_LI_IN_AIL) == 0)) {
 		iip->ili_pushbuf_flag = 0;
 		xfs_iunlock(ip, XFS_ILOCK_SHARED);
@@ -811,7 +811,7 @@ xfs_inode_item_pushbuf(
 			 * If not, we can flush it async.
 			 */
 			dopush = ((iip->ili_item.li_flags & XFS_LI_IN_AIL) &&
-				  (valusema(&(ip->i_flock)) <= 0));
+				  sem_is_locked(&(ip->i_flock)));
 			iip->ili_pushbuf_flag = 0;
 			xfs_iunlock(ip, XFS_ILOCK_SHARED);
 			xfs_buftrace("INODE ITEM PUSH", bp);
@@ -859,7 +859,7 @@ xfs_inode_item_push(
 	ip = iip->ili_inode;
 
 	ASSERT(ismrlocked(&(ip->i_lock), MR_ACCESS));
-	ASSERT(valusema(&(ip->i_flock)) <= 0);
+	ASSERT(sem_is_locked(&(ip->i_flock)));
 	/*
 	 * Since we were able to lock the inode's flush lock and
 	 * we found it on the AIL, the inode must be dirty.  This

Re: [PATCH 0/17] FRV: Permit compilation with allmodconfig

[Jan Dittmer]

David Howells wrote:
> The attached patches permit the FRV arch to be mostly compiled with
> allmodconfig, barring compiler errors.

What are the required and known working gcc and binutils versions
for that?

Thanks,

Jan