Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6.25

* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6.25:
  sh: Fix up uImage compression type
  remove include/asm-sh/floppy.h
  sh: Fix TIF_USEDFPU clearing under FPU emulation.
  sh: Fix occasional FPU register corruption under preempt.

13 files changed, 33 insertions, 288 deletions

diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 12720489e458..8d2cd1de5726 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -72,9 +72,6 @@ config SYS_SUPPORTS_NUMA
 config SYS_SUPPORTS_PCI
         bool
 
-config ARCH_MAY_HAVE_PC_FDC
-        bool
-
 config STACKTRACE_SUPPORT
         def_bool y
 
diff --git a/arch/sh/boot/Makefile b/arch/sh/boot/Makefile
index 3dda24daa0a8..89b408620dcb 100644
--- a/arch/sh/boot/Makefile
+++ b/arch/sh/boot/Makefile
@@ -44,7 +44,7 @@ KERNEL_ENTRY	:= $(shell /bin/bash -c 'printf "0x%08x" \
 
 quiet_cmd_uimage = UIMAGE  $@
       cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A sh -O linux -T kernel \
-                   -C none -a $(KERNEL_LOAD) -e $(KERNEL_ENTRY) \
+                   -C gzip -a $(KERNEL_LOAD) -e $(KERNEL_ENTRY) \
                    -n 'Linux-$(KERNELRELEASE)' -d $< $@
 
 $(obj)/uImage: $(obj)/vmlinux.bin.gz FORCE
diff --git a/arch/sh/kernel/cpu/sh2a/fpu.c b/arch/sh/kernel/cpu/sh2a/fpu.c
index ff99562456fb..5627c0b3ffa8 100644
--- a/arch/sh/kernel/cpu/sh2a/fpu.c
+++ b/arch/sh/kernel/cpu/sh2a/fpu.c
@@ -13,6 +13,7 @@
 #include <linux/signal.h>
 #include <asm/processor.h>
 #include <asm/io.h>
+#include <asm/fpu.h>
 
 /* The PR (precision) bit in the FP Status Register must be clear when
  * an frchg instruction is executed, otherwise the instruction is undefined.
diff --git a/arch/sh/kernel/cpu/sh4/fpu.c b/arch/sh/kernel/cpu/sh4/fpu.c
index 817f9939cda6..8020796139f1 100644
--- a/arch/sh/kernel/cpu/sh4/fpu.c
+++ b/arch/sh/kernel/cpu/sh4/fpu.c
@@ -16,6 +16,7 @@
 #include <asm/cpu/fpu.h>
 #include <asm/processor.h>
 #include <asm/system.h>
+#include <asm/fpu.h>
 
 /* The PR (precision) bit in the FP Status Register must be clear when
  * an frchg instruction is executed, otherwise the instruction is undefined.
diff --git a/arch/sh/kernel/cpu/sh5/fpu.c b/arch/sh/kernel/cpu/sh5/fpu.c
index 30b76a94abf2..dd4f51ffb50e 100644
--- a/arch/sh/kernel/cpu/sh5/fpu.c
+++ b/arch/sh/kernel/cpu/sh5/fpu.c
@@ -17,6 +17,7 @@
 #include <asm/processor.h>
 #include <asm/user.h>
 #include <asm/io.h>
+#include <asm/fpu.h>
 
 /*
  * Initially load the FPU with signalling NANS.  This bit pattern
diff --git a/arch/sh/kernel/dump_task.c b/arch/sh/kernel/dump_task.c
index 4a8a4083ff0b..1db7ce0f25d4 100644
--- a/arch/sh/kernel/dump_task.c
+++ b/arch/sh/kernel/dump_task.c
@@ -1,5 +1,6 @@
 #include <linux/elfcore.h>
 #include <linux/sched.h>
+#include <asm/fpu.h>
 
 /*
  * Capture the user space registers if the task is not running (in user space)
diff --git a/arch/sh/kernel/process_32.c b/arch/sh/kernel/process_32.c
index 9ab1926b9d10..b98e37a1f54c 100644
--- a/arch/sh/kernel/process_32.c
+++ b/arch/sh/kernel/process_32.c
@@ -25,6 +25,7 @@
 #include <asm/pgalloc.h>
 #include <asm/system.h>
 #include <asm/ubc.h>
+#include <asm/fpu.h>
 
 static int hlt_counter;
 int ubc_usercnt = 0;
diff --git a/arch/sh/kernel/signal_32.c b/arch/sh/kernel/signal_32.c
index f6b5fbfe75c4..f311551d9a05 100644
--- a/arch/sh/kernel/signal_32.c
+++ b/arch/sh/kernel/signal_32.c
@@ -29,6 +29,7 @@
 #include <asm/uaccess.h>
 #include <asm/pgtable.h>
 #include <asm/cacheflush.h>
+#include <asm/fpu.h>
 
 #define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
 
diff --git a/include/asm-sh/floppy.h b/include/asm-sh/floppy.h
deleted file mode 100644
index 59fbfdc90dfb..000000000000
--- a/include/asm-sh/floppy.h
+++ /dev/null
@@ -1,268 +0,0 @@
-/*
- * Architecture specific parts of the Floppy driver
- *   include/asm-i386/floppy.h
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1995
- */
-#ifndef __ASM_SH_FLOPPY_H
-#define __ASM_SH_FLOPPY_H
-
-#include <linux/vmalloc.h>
-
-
-/*
- * The DMA channel used by the floppy controller cannot access data at
- * addresses >= 16MB
- *
- * Went back to the 1MB limit, as some people had problems with the floppy
- * driver otherwise. It doesn't matter much for performance anyway, as most
- * floppy accesses go through the track buffer.
- */
-#define _CROSS_64KB(a,s,vdma) \
-(!vdma && ((unsigned long)(a)/K_64 != ((unsigned long)(a) + (s) - 1) / K_64))
-
-#define CROSS_64KB(a,s) _CROSS_64KB(a,s,use_virtual_dma & 1)
-
-
-#define SW fd_routine[use_virtual_dma&1]
-#define CSW fd_routine[can_use_virtual_dma & 1]
-
-
-#define fd_inb(port)                    inb_p(port)
-#define fd_outb(value,port)             outb_p(value,port)
-
-#define fd_request_dma()        CSW._request_dma(FLOPPY_DMA,"floppy")
-#define fd_free_dma()           CSW._free_dma(FLOPPY_DMA)
-#define fd_enable_irq()         enable_irq(FLOPPY_IRQ)
-#define fd_disable_irq()        disable_irq(FLOPPY_IRQ)
-#define fd_free_irq()           free_irq(FLOPPY_IRQ, NULL)
-#define fd_get_dma_residue()    SW._get_dma_residue(FLOPPY_DMA)
-#define fd_dma_mem_alloc(size)  SW._dma_mem_alloc(size)
-#define fd_dma_setup(addr, size, mode, io) SW._dma_setup(addr, size, mode, io)
-
-#define FLOPPY_CAN_FALLBACK_ON_NODMA
-
-static int virtual_dma_count;
-static int virtual_dma_residue;
-static char *virtual_dma_addr;
-static int virtual_dma_mode;
-static int doing_pdma;
-
-static void floppy_hardint(int irq, void *dev_id, struct pt_regs * regs)
-{
-        register unsigned char st;
-
-#undef TRACE_FLPY_INT
-
-#ifdef TRACE_FLPY_INT
-        static int calls=0;
-        static int bytes=0;
-        static int dma_wait=0;
-#endif
-        if(!doing_pdma) {
-                floppy_interrupt(irq, dev_id, regs);
-                return;
-        }
-
-#ifdef TRACE_FLPY_INT
-        if(!calls)
-                bytes = virtual_dma_count;
-#endif
-
-        {
-                register int lcount;
-                register char *lptr;
-
-                st = 1;
-                for(lcount=virtual_dma_count, lptr=virtual_dma_addr; 
-                    lcount; lcount--, lptr++) {
-                        st=inb(virtual_dma_port+4) & 0xa0 ;
-                        if(st != 0xa0) 
-                                break;
-                        if(virtual_dma_mode)
-                                outb_p(*lptr, virtual_dma_port+5);
-                        else
-                                *lptr = inb_p(virtual_dma_port+5);
-                }
-                virtual_dma_count = lcount;
-                virtual_dma_addr = lptr;
-                st = inb(virtual_dma_port+4);
-        }
-
-#ifdef TRACE_FLPY_INT
-        calls++;
-#endif
-        if(st == 0x20)
-                return;
-        if(!(st & 0x20)) {
-                virtual_dma_residue += virtual_dma_count;
-                virtual_dma_count=0;
-#ifdef TRACE_FLPY_INT
-                printk("count=%x, residue=%x calls=%d bytes=%d dma_wait=%d\n", 
-                       virtual_dma_count, virtual_dma_residue, calls, bytes,
-                       dma_wait);
-                calls = 0;
-                dma_wait=0;
-#endif
-                doing_pdma = 0;
-                floppy_interrupt(irq, dev_id, regs);
-                return;
-        }
-#ifdef TRACE_FLPY_INT
-        if(!virtual_dma_count)
-                dma_wait++;
-#endif
-}
-
-static void fd_disable_dma(void)
-{
-        if(! (can_use_virtual_dma & 1))
-                disable_dma(FLOPPY_DMA);
-        doing_pdma = 0;
-        virtual_dma_residue += virtual_dma_count;
-        virtual_dma_count=0;
-}
-
-static int vdma_request_dma(unsigned int dmanr, const char * device_id)
-{
-        return 0;
-}
-
-static void vdma_nop(unsigned int dummy)
-{
-}
-
-
-static int vdma_get_dma_residue(unsigned int dummy)
-{
-        return virtual_dma_count + virtual_dma_residue;
-}
-
-
-static int fd_request_irq(void)
-{
-        if(can_use_virtual_dma)
-                return request_irq(FLOPPY_IRQ, floppy_hardint,
-                                   IRQF_DISABLED, "floppy", NULL);
-        else
-                return request_irq(FLOPPY_IRQ, floppy_interrupt,
-                                   IRQF_DISABLED, "floppy", NULL);
-}
-
-static unsigned long dma_mem_alloc(unsigned long size)
-{
-        return __get_dma_pages(GFP_KERNEL,get_order(size));
-}
-
-
-static unsigned long vdma_mem_alloc(unsigned long size)
-{
-        return (unsigned long) vmalloc(size);
-
-}
-
-#define nodma_mem_alloc(size) vdma_mem_alloc(size)
-
-static void _fd_dma_mem_free(unsigned long addr, unsigned long size)
-{
-        if((unsigned int) addr >= (unsigned int) high_memory)
-                return vfree((void *)addr);
-        else
-                free_pages(addr, get_order(size));              
-}
-
-#define fd_dma_mem_free(addr, size)  _fd_dma_mem_free(addr, size) 
-
-static void _fd_chose_dma_mode(char *addr, unsigned long size)
-{
-        if(can_use_virtual_dma == 2) {
-                if((unsigned int) addr >= (unsigned int) high_memory ||
-                   virt_to_phys(addr) >= 0x10000000)
-                        use_virtual_dma = 1;
-                else
-                        use_virtual_dma = 0;
-        } else {
-                use_virtual_dma = can_use_virtual_dma & 1;
-        }
-}
-
-#define fd_chose_dma_mode(addr, size) _fd_chose_dma_mode(addr, size)
-
-
-static int vdma_dma_setup(char *addr, unsigned long size, int mode, int io)
-{
-        doing_pdma = 1;
-        virtual_dma_port = io;
-        virtual_dma_mode = (mode  == DMA_MODE_WRITE);
-        virtual_dma_addr = addr;
-        virtual_dma_count = size;
-        virtual_dma_residue = 0;
-        return 0;
-}
-
-static int hard_dma_setup(char *addr, unsigned long size, int mode, int io)
-{
-#ifdef FLOPPY_SANITY_CHECK
-        if (CROSS_64KB(addr, size)) {
-                printk("DMA crossing 64-K boundary %p-%p\n", addr, addr+size);
-                return -1;
-        }
-#endif
-
-        __flush_purge_region(addr, size);
-
-        /* actual, physical DMA */
-        doing_pdma = 0;
-        clear_dma_ff(FLOPPY_DMA);
-        set_dma_mode(FLOPPY_DMA,mode);
-        set_dma_addr(FLOPPY_DMA,virt_to_phys(addr));
-        set_dma_count(FLOPPY_DMA,size);
-        enable_dma(FLOPPY_DMA);
-        return 0;
-}
-
-static struct fd_routine_l {
-        int (*_request_dma)(unsigned int dmanr, const char * device_id);
-        void (*_free_dma)(unsigned int dmanr);
-        int (*_get_dma_residue)(unsigned int dummy);
-        unsigned long (*_dma_mem_alloc) (unsigned long size);
-        int (*_dma_setup)(char *addr, unsigned long size, int mode, int io);
-} fd_routine[] = {
-        {
-                request_dma,
-                free_dma,
-                get_dma_residue,
-                dma_mem_alloc,
-                hard_dma_setup
-        },
-        {
-                vdma_request_dma,
-                vdma_nop,
-                vdma_get_dma_residue,
-                vdma_mem_alloc,
-                vdma_dma_setup
-        }
-};
-
-
-static int FDC1 = 0x3f0;
-static int FDC2 = -1;
-
-/*
- * Floppy types are stored in the rtc's CMOS RAM and so rtc_lock
- * is needed to prevent corrupted CMOS RAM in case "insmod floppy"
- * coincides with another rtc CMOS user.                Paul G.
- */
-#define FLOPPY0_TYPE    (4)
-#define FLOPPY1_TYPE    (0)
-
-#define N_FDC 2
-#define N_DRIVE 8
-
-#define EXTRA_FLOPPY_PARAMS
-
-#endif /* __ASM_SH_FLOPPY_H */
diff --git a/include/asm-sh/fpu.h b/include/asm-sh/fpu.h
index f8429880a270..91462fea1507 100644
--- a/include/asm-sh/fpu.h
+++ b/include/asm-sh/fpu.h
@@ -1,9 +1,8 @@
 #ifndef __ASM_SH_FPU_H
 #define __ASM_SH_FPU_H
 
-#define SR_FD    0x00008000
-
 #ifndef __ASSEMBLY__
+#include <linux/preempt.h>
 #include <asm/ptrace.h>
 
 #ifdef CONFIG_SH_FPU
@@ -21,25 +20,35 @@ struct task_struct;
 
 extern void save_fpu(struct task_struct *__tsk, struct pt_regs *regs);
 #else
+
 #define release_fpu(regs)       do { } while (0)
 #define grab_fpu(regs)          do { } while (0)
-#define save_fpu(tsk, regs)     do { } while (0)
+
+static inline void save_fpu(struct task_struct *tsk, struct pt_regs *regs)
+{
+        clear_tsk_thread_flag(tsk, TIF_USEDFPU);
+}
 #endif
 
 extern int do_fpu_inst(unsigned short, struct pt_regs *);
 
-#define unlazy_fpu(tsk, regs) do {                      \
-        if (test_tsk_thread_flag(tsk, TIF_USEDFPU)) {   \
-                save_fpu(tsk, regs);                    \
-        }                                               \
-} while (0)
-
-#define clear_fpu(tsk, regs) do {                               \
-        if (test_tsk_thread_flag(tsk, TIF_USEDFPU)) {           \
-                clear_tsk_thread_flag(tsk, TIF_USEDFPU);        \
-                release_fpu(regs);                              \
-        }                                                       \
-} while (0)
+static inline void unlazy_fpu(struct task_struct *tsk, struct pt_regs *regs)
+{
+        preempt_disable();
+        if (test_tsk_thread_flag(tsk, TIF_USEDFPU))
+                save_fpu(tsk, regs);
+        preempt_enable();
+}
+
+static inline void clear_fpu(struct task_struct *tsk, struct pt_regs *regs)
+{
+        preempt_disable();
+        if (test_tsk_thread_flag(tsk, TIF_USEDFPU)) {
+                clear_tsk_thread_flag(tsk, TIF_USEDFPU);
+                release_fpu(regs);
+        }
+        preempt_enable();
+}
 
 #endif /* __ASSEMBLY__ */
 
diff --git a/include/asm-sh/processor.h b/include/asm-sh/processor.h
index 19fe47c1ca17..ec707b98e5b9 100644
--- a/include/asm-sh/processor.h
+++ b/include/asm-sh/processor.h
@@ -2,7 +2,6 @@
 #define __ASM_SH_PROCESSOR_H
 
 #include <asm/cpu-features.h>
-#include <asm/fpu.h>
 
 #ifndef __ASSEMBLY__
 /*
diff --git a/include/asm-sh/processor_32.h b/include/asm-sh/processor_32.h
index df2d5b039ef4..c09305d6a9d9 100644
--- a/include/asm-sh/processor_32.h
+++ b/include/asm-sh/processor_32.h
@@ -70,6 +70,7 @@ extern struct sh_cpuinfo cpu_data[];
  */
 #define SR_DSP          0x00001000
 #define SR_IMASK        0x000000f0
+#define SR_FD           0x00008000
 
 /*
  * FPU structure and data
diff --git a/include/asm-sh/processor_64.h b/include/asm-sh/processor_64.h
index eda4bef448e9..88a2edf8fa5d 100644
--- a/include/asm-sh/processor_64.h
+++ b/include/asm-sh/processor_64.h
@@ -112,6 +112,7 @@ extern struct sh_cpuinfo cpu_data[];
 #endif
 
 #define SR_IMASK 0x000000f0
+#define SR_FD    0x00008000
 #define SR_SSTEP 0x08000000
 
 #ifndef __ASSEMBLY__