mirror of
https://github.com/FEX-Emu/linux.git
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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.
This commit is contained in:
Linus Torvalds
commit
10027471a3
@ -72,9 +72,6 @@ config SYS_SUPPORTS_NUMA
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config SYS_SUPPORTS_PCI
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bool
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config ARCH_MAY_HAVE_PC_FDC
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bool
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config STACKTRACE_SUPPORT
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def_bool y
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@ -44,7 +44,7 @@ KERNEL_ENTRY := $(shell /bin/bash -c 'printf "0x%08x" \
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quiet_cmd_uimage = UIMAGE $@
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cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A sh -O linux -T kernel \
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-C none -a $(KERNEL_LOAD) -e $(KERNEL_ENTRY) \
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-C gzip -a $(KERNEL_LOAD) -e $(KERNEL_ENTRY) \
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-n 'Linux-$(KERNELRELEASE)' -d $< $@
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$(obj)/uImage: $(obj)/vmlinux.bin.gz FORCE
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@ -13,6 +13,7 @@
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#include <linux/signal.h>
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#include <asm/processor.h>
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#include <asm/io.h>
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#include <asm/fpu.h>
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/* The PR (precision) bit in the FP Status Register must be clear when
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* an frchg instruction is executed, otherwise the instruction is undefined.
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@ -16,6 +16,7 @@
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#include <asm/cpu/fpu.h>
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#include <asm/processor.h>
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#include <asm/system.h>
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#include <asm/fpu.h>
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/* The PR (precision) bit in the FP Status Register must be clear when
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* an frchg instruction is executed, otherwise the instruction is undefined.
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@ -17,6 +17,7 @@
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#include <asm/processor.h>
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#include <asm/user.h>
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#include <asm/io.h>
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#include <asm/fpu.h>
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/*
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* Initially load the FPU with signalling NANS. This bit pattern
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@ -1,5 +1,6 @@
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#include <linux/elfcore.h>
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#include <linux/sched.h>
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#include <asm/fpu.h>
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/*
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* Capture the user space registers if the task is not running (in user space)
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@ -25,6 +25,7 @@
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#include <asm/pgalloc.h>
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#include <asm/system.h>
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#include <asm/ubc.h>
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#include <asm/fpu.h>
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static int hlt_counter;
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int ubc_usercnt = 0;
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@ -29,6 +29,7 @@
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#include <asm/uaccess.h>
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#include <asm/pgtable.h>
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#include <asm/cacheflush.h>
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#include <asm/fpu.h>
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#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
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@ -1,268 +0,0 @@
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/*
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* Architecture specific parts of the Floppy driver
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* include/asm-i386/floppy.h
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 1995
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*/
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#ifndef __ASM_SH_FLOPPY_H
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#define __ASM_SH_FLOPPY_H
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#include <linux/vmalloc.h>
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/*
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* The DMA channel used by the floppy controller cannot access data at
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* addresses >= 16MB
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*
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* Went back to the 1MB limit, as some people had problems with the floppy
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* driver otherwise. It doesn't matter much for performance anyway, as most
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* floppy accesses go through the track buffer.
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*/
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#define _CROSS_64KB(a,s,vdma) \
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(!vdma && ((unsigned long)(a)/K_64 != ((unsigned long)(a) + (s) - 1) / K_64))
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#define CROSS_64KB(a,s) _CROSS_64KB(a,s,use_virtual_dma & 1)
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#define SW fd_routine[use_virtual_dma&1]
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#define CSW fd_routine[can_use_virtual_dma & 1]
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#define fd_inb(port) inb_p(port)
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#define fd_outb(value,port) outb_p(value,port)
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#define fd_request_dma() CSW._request_dma(FLOPPY_DMA,"floppy")
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#define fd_free_dma() CSW._free_dma(FLOPPY_DMA)
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#define fd_enable_irq() enable_irq(FLOPPY_IRQ)
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#define fd_disable_irq() disable_irq(FLOPPY_IRQ)
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#define fd_free_irq() free_irq(FLOPPY_IRQ, NULL)
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#define fd_get_dma_residue() SW._get_dma_residue(FLOPPY_DMA)
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#define fd_dma_mem_alloc(size) SW._dma_mem_alloc(size)
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#define fd_dma_setup(addr, size, mode, io) SW._dma_setup(addr, size, mode, io)
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#define FLOPPY_CAN_FALLBACK_ON_NODMA
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static int virtual_dma_count;
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static int virtual_dma_residue;
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static char *virtual_dma_addr;
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static int virtual_dma_mode;
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static int doing_pdma;
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static void floppy_hardint(int irq, void *dev_id, struct pt_regs * regs)
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{
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register unsigned char st;
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#undef TRACE_FLPY_INT
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#ifdef TRACE_FLPY_INT
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static int calls=0;
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static int bytes=0;
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static int dma_wait=0;
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#endif
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if(!doing_pdma) {
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floppy_interrupt(irq, dev_id, regs);
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return;
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}
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#ifdef TRACE_FLPY_INT
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if(!calls)
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bytes = virtual_dma_count;
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#endif
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{
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register int lcount;
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register char *lptr;
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st = 1;
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for(lcount=virtual_dma_count, lptr=virtual_dma_addr;
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lcount; lcount--, lptr++) {
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st=inb(virtual_dma_port+4) & 0xa0 ;
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if(st != 0xa0)
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break;
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if(virtual_dma_mode)
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outb_p(*lptr, virtual_dma_port+5);
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else
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*lptr = inb_p(virtual_dma_port+5);
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}
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virtual_dma_count = lcount;
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virtual_dma_addr = lptr;
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st = inb(virtual_dma_port+4);
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}
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#ifdef TRACE_FLPY_INT
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calls++;
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#endif
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if(st == 0x20)
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return;
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if(!(st & 0x20)) {
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virtual_dma_residue += virtual_dma_count;
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virtual_dma_count=0;
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#ifdef TRACE_FLPY_INT
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printk("count=%x, residue=%x calls=%d bytes=%d dma_wait=%d\n",
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virtual_dma_count, virtual_dma_residue, calls, bytes,
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dma_wait);
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calls = 0;
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dma_wait=0;
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#endif
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doing_pdma = 0;
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floppy_interrupt(irq, dev_id, regs);
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return;
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}
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#ifdef TRACE_FLPY_INT
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if(!virtual_dma_count)
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dma_wait++;
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#endif
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}
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static void fd_disable_dma(void)
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{
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if(! (can_use_virtual_dma & 1))
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disable_dma(FLOPPY_DMA);
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doing_pdma = 0;
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virtual_dma_residue += virtual_dma_count;
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virtual_dma_count=0;
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}
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static int vdma_request_dma(unsigned int dmanr, const char * device_id)
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{
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return 0;
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}
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static void vdma_nop(unsigned int dummy)
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{
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}
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static int vdma_get_dma_residue(unsigned int dummy)
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{
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return virtual_dma_count + virtual_dma_residue;
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}
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static int fd_request_irq(void)
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{
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if(can_use_virtual_dma)
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return request_irq(FLOPPY_IRQ, floppy_hardint,
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IRQF_DISABLED, "floppy", NULL);
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else
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return request_irq(FLOPPY_IRQ, floppy_interrupt,
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IRQF_DISABLED, "floppy", NULL);
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}
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static unsigned long dma_mem_alloc(unsigned long size)
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{
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return __get_dma_pages(GFP_KERNEL,get_order(size));
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}
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static unsigned long vdma_mem_alloc(unsigned long size)
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{
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return (unsigned long) vmalloc(size);
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}
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#define nodma_mem_alloc(size) vdma_mem_alloc(size)
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static void _fd_dma_mem_free(unsigned long addr, unsigned long size)
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{
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if((unsigned int) addr >= (unsigned int) high_memory)
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return vfree((void *)addr);
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else
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free_pages(addr, get_order(size));
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}
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#define fd_dma_mem_free(addr, size) _fd_dma_mem_free(addr, size)
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static void _fd_chose_dma_mode(char *addr, unsigned long size)
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{
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if(can_use_virtual_dma == 2) {
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if((unsigned int) addr >= (unsigned int) high_memory ||
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virt_to_phys(addr) >= 0x10000000)
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use_virtual_dma = 1;
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else
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use_virtual_dma = 0;
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} else {
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use_virtual_dma = can_use_virtual_dma & 1;
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}
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}
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#define fd_chose_dma_mode(addr, size) _fd_chose_dma_mode(addr, size)
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static int vdma_dma_setup(char *addr, unsigned long size, int mode, int io)
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{
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doing_pdma = 1;
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virtual_dma_port = io;
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virtual_dma_mode = (mode == DMA_MODE_WRITE);
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virtual_dma_addr = addr;
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virtual_dma_count = size;
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virtual_dma_residue = 0;
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return 0;
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}
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static int hard_dma_setup(char *addr, unsigned long size, int mode, int io)
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{
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#ifdef FLOPPY_SANITY_CHECK
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if (CROSS_64KB(addr, size)) {
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printk("DMA crossing 64-K boundary %p-%p\n", addr, addr+size);
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return -1;
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}
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#endif
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__flush_purge_region(addr, size);
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/* actual, physical DMA */
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doing_pdma = 0;
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clear_dma_ff(FLOPPY_DMA);
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set_dma_mode(FLOPPY_DMA,mode);
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set_dma_addr(FLOPPY_DMA,virt_to_phys(addr));
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set_dma_count(FLOPPY_DMA,size);
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enable_dma(FLOPPY_DMA);
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return 0;
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}
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static struct fd_routine_l {
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int (*_request_dma)(unsigned int dmanr, const char * device_id);
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void (*_free_dma)(unsigned int dmanr);
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int (*_get_dma_residue)(unsigned int dummy);
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unsigned long (*_dma_mem_alloc) (unsigned long size);
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int (*_dma_setup)(char *addr, unsigned long size, int mode, int io);
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} fd_routine[] = {
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{
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request_dma,
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free_dma,
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get_dma_residue,
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dma_mem_alloc,
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hard_dma_setup
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},
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{
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vdma_request_dma,
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vdma_nop,
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vdma_get_dma_residue,
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vdma_mem_alloc,
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vdma_dma_setup
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}
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};
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static int FDC1 = 0x3f0;
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static int FDC2 = -1;
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/*
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* Floppy types are stored in the rtc's CMOS RAM and so rtc_lock
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* is needed to prevent corrupted CMOS RAM in case "insmod floppy"
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* coincides with another rtc CMOS user. Paul G.
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*/
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#define FLOPPY0_TYPE (4)
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#define FLOPPY1_TYPE (0)
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#define N_FDC 2
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#define N_DRIVE 8
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#define EXTRA_FLOPPY_PARAMS
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#endif /* __ASM_SH_FLOPPY_H */
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@ -1,9 +1,8 @@
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#ifndef __ASM_SH_FPU_H
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#define __ASM_SH_FPU_H
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#define SR_FD 0x00008000
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#ifndef __ASSEMBLY__
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#include <linux/preempt.h>
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#include <asm/ptrace.h>
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#ifdef CONFIG_SH_FPU
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@ -21,25 +20,35 @@ struct task_struct;
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extern void save_fpu(struct task_struct *__tsk, struct pt_regs *regs);
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#else
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#define release_fpu(regs) do { } while (0)
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#define grab_fpu(regs) do { } while (0)
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#define save_fpu(tsk, regs) do { } while (0)
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static inline void save_fpu(struct task_struct *tsk, struct pt_regs *regs)
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{
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clear_tsk_thread_flag(tsk, TIF_USEDFPU);
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}
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#endif
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extern int do_fpu_inst(unsigned short, struct pt_regs *);
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#define unlazy_fpu(tsk, regs) do { \
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if (test_tsk_thread_flag(tsk, TIF_USEDFPU)) { \
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save_fpu(tsk, regs); \
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} \
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} while (0)
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static inline void unlazy_fpu(struct task_struct *tsk, struct pt_regs *regs)
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{
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preempt_disable();
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if (test_tsk_thread_flag(tsk, TIF_USEDFPU))
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save_fpu(tsk, regs);
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preempt_enable();
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}
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#define clear_fpu(tsk, regs) do { \
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if (test_tsk_thread_flag(tsk, TIF_USEDFPU)) { \
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clear_tsk_thread_flag(tsk, TIF_USEDFPU); \
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release_fpu(regs); \
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} \
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} while (0)
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static inline void clear_fpu(struct task_struct *tsk, struct pt_regs *regs)
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{
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preempt_disable();
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if (test_tsk_thread_flag(tsk, TIF_USEDFPU)) {
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clear_tsk_thread_flag(tsk, TIF_USEDFPU);
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release_fpu(regs);
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}
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preempt_enable();
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}
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#endif /* __ASSEMBLY__ */
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@ -2,7 +2,6 @@
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#define __ASM_SH_PROCESSOR_H
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#include <asm/cpu-features.h>
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#include <asm/fpu.h>
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#ifndef __ASSEMBLY__
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/*
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@ -70,6 +70,7 @@ extern struct sh_cpuinfo cpu_data[];
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*/
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#define SR_DSP 0x00001000
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#define SR_IMASK 0x000000f0
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#define SR_FD 0x00008000
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/*
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* FPU structure and data
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@ -112,6 +112,7 @@ extern struct sh_cpuinfo cpu_data[];
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#endif
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#define SR_IMASK 0x000000f0
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#define SR_FD 0x00008000
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#define SR_SSTEP 0x08000000
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#ifndef __ASSEMBLY__
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