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powerpc: Move a bunch of ppc64 headers to include/asm-powerpc
... and also delete some that are no longer used because we already had an include/asm-powerpc version of the header. Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Paul Mackerras
parent
821077b261
commit
c55377ee73
@ -1,5 +1,5 @@
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#ifndef _PPC64_DELAY_H
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#define _PPC64_DELAY_H
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#ifndef _ASM_POWERPC_DELAY_H
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#define _ASM_POWERPC_DELAY_H
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/*
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* Copyright 1996, Paul Mackerras.
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@ -15,10 +15,17 @@
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extern unsigned long tb_ticks_per_usec;
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/* define these here to prevent circular dependencies */
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#ifdef CONFIG_PPC64
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/* define these here to prevent circular dependencies */
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/* these instructions control the thread priority on multi-threaded cpus */
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#define __HMT_low() asm volatile("or 1,1,1")
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#define __HMT_medium() asm volatile("or 2,2,2")
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#define __barrier() asm volatile("":::"memory")
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#else
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#define __HMT_low()
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#define __HMT_medium()
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#endif
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#define __barrier() asm volatile("" ::: "memory")
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static inline unsigned long __get_tb(void)
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{
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@ -32,7 +39,7 @@ static inline void __delay(unsigned long loops)
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{
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unsigned long start = __get_tb();
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while((__get_tb()-start) < loops)
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while((__get_tb() - start) < loops)
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__HMT_low();
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__HMT_medium();
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__barrier();
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@ -45,4 +52,4 @@ static inline void udelay(unsigned long usecs)
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__delay(loops);
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}
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#endif /* _PPC64_DELAY_H */
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#endif /* _ASM_POWERPC_DELAY_H */
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@ -7,22 +7,22 @@
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*
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* Copyright (C) 1995
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*/
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#ifndef __ASM_PPC64_FLOPPY_H
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#define __ASM_PPC64_FLOPPY_H
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#ifndef __ASM_POWERPC_FLOPPY_H
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#define __ASM_POWERPC_FLOPPY_H
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#include <linux/config.h>
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#include <asm/machdep.h>
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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_inb(port) inb_p(port)
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#define fd_outb(value,port) outb_p(value,port)
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#define fd_enable_dma() enable_dma(FLOPPY_DMA)
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#define fd_disable_dma() disable_dma(FLOPPY_DMA)
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#define fd_request_dma() request_dma(FLOPPY_DMA,"floppy")
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#define fd_request_dma() request_dma(FLOPPY_DMA, "floppy")
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#define fd_free_dma() free_dma(FLOPPY_DMA)
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#define fd_clear_dma_ff() clear_dma_ff(FLOPPY_DMA)
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#define fd_set_dma_mode(mode) set_dma_mode(FLOPPY_DMA,mode)
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#define fd_set_dma_count(count) set_dma_count(FLOPPY_DMA,count)
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#define fd_set_dma_mode(mode) set_dma_mode(FLOPPY_DMA, mode)
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#define fd_set_dma_count(count) set_dma_count(FLOPPY_DMA, count)
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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_cacheflush(addr,size) /* nothing */
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@ -35,10 +35,10 @@
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#include <linux/pci.h>
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#define fd_dma_setup(addr,size,mode,io) ppc64_fd_dma_setup(addr,size,mode,io)
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#define fd_dma_setup(addr,size,mode,io) powerpc_fd_dma_setup(addr,size,mode,io)
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static __inline__ int
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ppc64_fd_dma_setup(char *addr, unsigned long size, int mode, int io)
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static __inline__ int powerpc_fd_dma_setup(char *addr, unsigned long size,
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int mode, int io)
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{
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static unsigned long prev_size;
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static dma_addr_t bus_addr = 0;
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@ -55,9 +55,8 @@ ppc64_fd_dma_setup(char *addr, unsigned long size, int mode, int io)
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bus_addr = 0;
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}
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if (!bus_addr) /* need to map it */ {
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if (!bus_addr) /* need to map it */
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bus_addr = pci_map_single(NULL, addr, size, dir);
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}
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/* remember this one as prev */
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prev_addr = addr;
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@ -103,4 +102,4 @@ static int FDC2 = -1;
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#define EXTRA_FLOPPY_PARAMS
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#endif /* __ASM_PPC64_FLOPPY_H */
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#endif /* __ASM_POWERPC_FLOPPY_H */
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@ -1,6 +1,5 @@
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/*
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* PreP compliant NVRAM access
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* This needs to be updated for PPC64
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* NVRAM definitions and access functions.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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@ -8,8 +7,8 @@
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _PPC64_NVRAM_H
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#define _PPC64_NVRAM_H
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#ifndef _ASM_POWERPC_NVRAM_H
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#define _ASM_POWERPC_NVRAM_H
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#define NVRW_CNT 0x20
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#define NVRAM_HEADER_LEN 16 /* sizeof(struct nvram_header) */
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@ -88,7 +87,11 @@ extern u8 pmac_xpram_read(int xpaddr);
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extern void pmac_xpram_write(int xpaddr, u8 data);
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/* Synchronize NVRAM */
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extern int nvram_sync(void);
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extern void nvram_sync(void);
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/* Normal access to NVRAM */
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extern unsigned char nvram_read_byte(int i);
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extern void nvram_write_byte(unsigned char c, int i);
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/* Some offsets in XPRAM */
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#define PMAC_XPRAM_MACHINE_LOC 0xe4
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@ -112,5 +115,6 @@ struct pmac_machine_location {
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_IOWR('p', 0x40, int)
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#define IOC_NVRAM_GET_OFFSET _IOWR('p', 0x42, int) /* Get NVRAM partition offset */
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#define IOC_NVRAM_SYNC _IO('p', 0x43) /* Sync NVRAM image */
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#endif /* _PPC64_NVRAM_H */
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#endif /* _ASM_POWERPC_NVRAM_H */
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@ -1,21 +1,16 @@
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/*
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* include/asm-ppc64/serial.h
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*/
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#ifndef _PPC64_SERIAL_H
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#define _PPC64_SERIAL_H
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/*
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* This assumes you have a 1.8432 MHz clock for your UART.
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*
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* It'd be nice if someone built a serial card with a 24.576 MHz
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* clock, since the 16550A is capable of handling a top speed of 1.5
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* megabits/second; but this requires the faster clock.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _ASM_POWERPC_SERIAL_H
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#define _ASM_POWERPC_SERIAL_H
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/*
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* Serial ports are not listed here, because they are discovered
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* through the device tree.
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*/
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/* Default baud base if not found in device-tree */
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#define BASE_BAUD ( 1843200 / 16 )
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@ -1,73 +0,0 @@
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/*
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* PreP compliant NVRAM access
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*/
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#ifdef __KERNEL__
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#ifndef _PPC_NVRAM_H
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#define _PPC_NVRAM_H
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#define NVRAM_AS0 0x74
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#define NVRAM_AS1 0x75
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#define NVRAM_DATA 0x77
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/* RTC Offsets */
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#define MOTO_RTC_SECONDS 0x1FF9
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#define MOTO_RTC_MINUTES 0x1FFA
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#define MOTO_RTC_HOURS 0x1FFB
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#define MOTO_RTC_DAY_OF_WEEK 0x1FFC
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#define MOTO_RTC_DAY_OF_MONTH 0x1FFD
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#define MOTO_RTC_MONTH 0x1FFE
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#define MOTO_RTC_YEAR 0x1FFF
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#define MOTO_RTC_CONTROLA 0x1FF8
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#define MOTO_RTC_CONTROLB 0x1FF9
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/* PowerMac specific nvram stuffs */
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enum {
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pmac_nvram_OF, /* Open Firmware partition */
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pmac_nvram_XPRAM, /* MacOS XPRAM partition */
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pmac_nvram_NR /* MacOS Name Registry partition */
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};
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/* Return partition offset in nvram */
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extern int pmac_get_partition(int partition);
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/* Direct access to XPRAM on PowerMacs */
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extern u8 pmac_xpram_read(int xpaddr);
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extern void pmac_xpram_write(int xpaddr, u8 data);
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/* Synchronize NVRAM */
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extern void nvram_sync(void);
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/* Normal access to NVRAM */
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extern unsigned char nvram_read_byte(int i);
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extern void nvram_write_byte(unsigned char c, int i);
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/* Some offsets in XPRAM */
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#define PMAC_XPRAM_MACHINE_LOC 0xe4
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#define PMAC_XPRAM_SOUND_VOLUME 0x08
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/* Machine location structure in PowerMac XPRAM */
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struct pmac_machine_location {
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unsigned int latitude; /* 2+30 bit Fractional number */
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unsigned int longitude; /* 2+30 bit Fractional number */
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unsigned int delta; /* mix of GMT delta and DLS */
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};
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/*
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* /dev/nvram ioctls
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*
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* Note that PMAC_NVRAM_GET_OFFSET is still supported, but is
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* definitely obsolete. Do not use it if you can avoid it
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*/
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#define OBSOLETE_PMAC_NVRAM_GET_OFFSET \
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_IOWR('p', 0x40, int)
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#define IOC_NVRAM_GET_OFFSET _IOWR('p', 0x42, int) /* Get NVRAM partition offset */
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#define IOC_NVRAM_SYNC _IO('p', 0x43) /* Sync NVRAM image */
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#endif
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#endif /* __KERNEL__ */
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@ -1,220 +0,0 @@
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#ifndef _PPC64_PROM_H
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#define _PPC64_PROM_H
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/*
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* Definitions for talking to the Open Firmware PROM on
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* Power Macintosh computers.
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*
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* Copyright (C) 1996 Paul Mackerras.
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*
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* Updates for PPC64 by Peter Bergner & David Engebretsen, IBM Corp.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/config.h>
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#include <linux/proc_fs.h>
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#include <asm/atomic.h>
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#define PTRRELOC(x) ((typeof(x))((unsigned long)(x) - offset))
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#define PTRUNRELOC(x) ((typeof(x))((unsigned long)(x) + offset))
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#define RELOC(x) (*PTRRELOC(&(x)))
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/* Definitions used by the flattened device tree */
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#define OF_DT_HEADER 0xd00dfeed /* marker */
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#define OF_DT_BEGIN_NODE 0x1 /* Start of node, full name */
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#define OF_DT_END_NODE 0x2 /* End node */
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#define OF_DT_PROP 0x3 /* Property: name off, size,
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* content */
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#define OF_DT_NOP 0x4 /* nop */
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#define OF_DT_END 0x9
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#define OF_DT_VERSION 0x10
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/*
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* This is what gets passed to the kernel by prom_init or kexec
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*
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* The dt struct contains the device tree structure, full pathes and
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* property contents. The dt strings contain a separate block with just
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* the strings for the property names, and is fully page aligned and
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* self contained in a page, so that it can be kept around by the kernel,
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* each property name appears only once in this page (cheap compression)
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*
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* the mem_rsvmap contains a map of reserved ranges of physical memory,
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* passing it here instead of in the device-tree itself greatly simplifies
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* the job of everybody. It's just a list of u64 pairs (base/size) that
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* ends when size is 0
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*/
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struct boot_param_header
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{
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u32 magic; /* magic word OF_DT_HEADER */
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u32 totalsize; /* total size of DT block */
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u32 off_dt_struct; /* offset to structure */
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u32 off_dt_strings; /* offset to strings */
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u32 off_mem_rsvmap; /* offset to memory reserve map */
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u32 version; /* format version */
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u32 last_comp_version; /* last compatible version */
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/* version 2 fields below */
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u32 boot_cpuid_phys; /* Physical CPU id we're booting on */
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/* version 3 fields below */
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u32 dt_strings_size; /* size of the DT strings block */
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};
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typedef u32 phandle;
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typedef u32 ihandle;
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struct address_range {
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unsigned long space;
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unsigned long address;
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unsigned long size;
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};
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struct interrupt_info {
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int line;
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int sense; /* +ve/-ve logic, edge or level, etc. */
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};
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struct pci_address {
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u32 a_hi;
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u32 a_mid;
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u32 a_lo;
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};
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struct isa_address {
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u32 a_hi;
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u32 a_lo;
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};
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struct isa_range {
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struct isa_address isa_addr;
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struct pci_address pci_addr;
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unsigned int size;
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};
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struct reg_property {
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unsigned long address;
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unsigned long size;
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};
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struct reg_property32 {
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unsigned int address;
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unsigned int size;
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};
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struct reg_property64 {
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unsigned long address;
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unsigned long size;
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};
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struct property {
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char *name;
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int length;
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unsigned char *value;
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struct property *next;
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};
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struct device_node {
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char *name;
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char *type;
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phandle node;
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phandle linux_phandle;
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int n_addrs;
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struct address_range *addrs;
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int n_intrs;
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struct interrupt_info *intrs;
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char *full_name;
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struct property *properties;
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struct device_node *parent;
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struct device_node *child;
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struct device_node *sibling;
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struct device_node *next; /* next device of same type */
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struct device_node *allnext; /* next in list of all nodes */
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struct proc_dir_entry *pde; /* this node's proc directory */
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struct kref kref;
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unsigned long _flags;
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void *data;
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#ifdef CONFIG_PPC_ISERIES
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struct list_head Device_List;
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#endif
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};
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extern struct device_node *of_chosen;
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/* flag descriptions */
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#define OF_DYNAMIC 1 /* node and properties were allocated via kmalloc */
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#define OF_IS_DYNAMIC(x) test_bit(OF_DYNAMIC, &x->_flags)
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#define OF_MARK_DYNAMIC(x) set_bit(OF_DYNAMIC, &x->_flags)
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/*
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* Until 32-bit ppc can add proc_dir_entries to its device_node
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* definition, we cannot refer to pde, name_link, and addr_link
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* in arch-independent code.
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*/
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#define HAVE_ARCH_DEVTREE_FIXUPS
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static inline void set_node_proc_entry(struct device_node *dn, struct proc_dir_entry *de)
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{
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dn->pde = de;
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}
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/* OBSOLETE: Old stlye node lookup */
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extern struct device_node *find_devices(const char *name);
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extern struct device_node *find_type_devices(const char *type);
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extern struct device_node *find_path_device(const char *path);
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extern struct device_node *find_compatible_devices(const char *type,
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const char *compat);
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extern struct device_node *find_all_nodes(void);
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/* New style node lookup */
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extern struct device_node *of_find_node_by_name(struct device_node *from,
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const char *name);
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extern struct device_node *of_find_node_by_type(struct device_node *from,
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const char *type);
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extern struct device_node *of_find_compatible_node(struct device_node *from,
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const char *type, const char *compat);
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extern struct device_node *of_find_node_by_path(const char *path);
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extern struct device_node *of_find_node_by_phandle(phandle handle);
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extern struct device_node *of_find_all_nodes(struct device_node *prev);
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extern struct device_node *of_get_parent(const struct device_node *node);
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extern struct device_node *of_get_next_child(const struct device_node *node,
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struct device_node *prev);
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extern struct device_node *of_node_get(struct device_node *node);
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extern void of_node_put(struct device_node *node);
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/* For scanning the flat device-tree at boot time */
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int __init of_scan_flat_dt(int (*it)(unsigned long node,
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const char *uname, int depth,
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void *data),
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void *data);
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void* __init of_get_flat_dt_prop(unsigned long node, const char *name,
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unsigned long *size);
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/* For updating the device tree at runtime */
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extern void of_attach_node(struct device_node *);
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extern void of_detach_node(const struct device_node *);
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/* Other Prototypes */
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extern unsigned long prom_init(unsigned long, unsigned long, unsigned long,
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||||
unsigned long, unsigned long);
|
||||
extern void finish_device_tree(void);
|
||||
extern void unflatten_device_tree(void);
|
||||
extern void early_init_devtree(void *);
|
||||
extern int device_is_compatible(struct device_node *device, const char *);
|
||||
extern int machine_is_compatible(const char *compat);
|
||||
extern unsigned char *get_property(struct device_node *node, const char *name,
|
||||
int *lenp);
|
||||
extern void print_properties(struct device_node *node);
|
||||
extern int prom_n_addr_cells(struct device_node* np);
|
||||
extern int prom_n_size_cells(struct device_node* np);
|
||||
extern int prom_n_intr_cells(struct device_node* np);
|
||||
extern void prom_get_irq_senses(unsigned char *senses, int off, int max);
|
||||
extern int prom_add_property(struct device_node* np, struct property* prop);
|
||||
|
||||
#endif /* _PPC64_PROM_H */
|
||||
@ -1,310 +0,0 @@
|
||||
#ifndef __PPC64_SYSTEM_H
|
||||
#define __PPC64_SYSTEM_H
|
||||
|
||||
/*
|
||||
* 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/config.h>
|
||||
#include <linux/compiler.h>
|
||||
#include <asm/page.h>
|
||||
#include <asm/processor.h>
|
||||
#include <asm/hw_irq.h>
|
||||
#include <asm/synch.h>
|
||||
|
||||
/*
|
||||
* Memory barrier.
|
||||
* The sync instruction guarantees that all memory accesses initiated
|
||||
* by this processor have been performed (with respect to all other
|
||||
* mechanisms that access memory). The eieio instruction is a barrier
|
||||
* providing an ordering (separately) for (a) cacheable stores and (b)
|
||||
* loads and stores to non-cacheable memory (e.g. I/O devices).
|
||||
*
|
||||
* mb() prevents loads and stores being reordered across this point.
|
||||
* rmb() prevents loads being reordered across this point.
|
||||
* wmb() prevents stores being reordered across this point.
|
||||
* read_barrier_depends() prevents data-dependent loads being reordered
|
||||
* across this point (nop on PPC).
|
||||
*
|
||||
* We have to use the sync instructions for mb(), since lwsync doesn't
|
||||
* order loads with respect to previous stores. Lwsync is fine for
|
||||
* rmb(), though.
|
||||
* For wmb(), we use sync since wmb is used in drivers to order
|
||||
* stores to system memory with respect to writes to the device.
|
||||
* However, smp_wmb() can be a lighter-weight eieio barrier on
|
||||
* SMP since it is only used to order updates to system memory.
|
||||
*/
|
||||
#define mb() __asm__ __volatile__ ("sync" : : : "memory")
|
||||
#define rmb() __asm__ __volatile__ ("lwsync" : : : "memory")
|
||||
#define wmb() __asm__ __volatile__ ("sync" : : : "memory")
|
||||
#define read_barrier_depends() do { } while(0)
|
||||
|
||||
#define set_mb(var, value) do { var = value; smp_mb(); } while (0)
|
||||
#define set_wmb(var, value) do { var = value; smp_wmb(); } while (0)
|
||||
|
||||
#ifdef CONFIG_SMP
|
||||
#define smp_mb() mb()
|
||||
#define smp_rmb() rmb()
|
||||
#define smp_wmb() eieio()
|
||||
#define smp_read_barrier_depends() read_barrier_depends()
|
||||
#else
|
||||
#define smp_mb() __asm__ __volatile__("": : :"memory")
|
||||
#define smp_rmb() __asm__ __volatile__("": : :"memory")
|
||||
#define smp_wmb() __asm__ __volatile__("": : :"memory")
|
||||
#define smp_read_barrier_depends() do { } while(0)
|
||||
#endif /* CONFIG_SMP */
|
||||
|
||||
#ifdef __KERNEL__
|
||||
struct task_struct;
|
||||
struct pt_regs;
|
||||
|
||||
#ifdef CONFIG_DEBUGGER
|
||||
|
||||
extern int (*__debugger)(struct pt_regs *regs);
|
||||
extern int (*__debugger_ipi)(struct pt_regs *regs);
|
||||
extern int (*__debugger_bpt)(struct pt_regs *regs);
|
||||
extern int (*__debugger_sstep)(struct pt_regs *regs);
|
||||
extern int (*__debugger_iabr_match)(struct pt_regs *regs);
|
||||
extern int (*__debugger_dabr_match)(struct pt_regs *regs);
|
||||
extern int (*__debugger_fault_handler)(struct pt_regs *regs);
|
||||
|
||||
#define DEBUGGER_BOILERPLATE(__NAME) \
|
||||
static inline int __NAME(struct pt_regs *regs) \
|
||||
{ \
|
||||
if (unlikely(__ ## __NAME)) \
|
||||
return __ ## __NAME(regs); \
|
||||
return 0; \
|
||||
}
|
||||
|
||||
DEBUGGER_BOILERPLATE(debugger)
|
||||
DEBUGGER_BOILERPLATE(debugger_ipi)
|
||||
DEBUGGER_BOILERPLATE(debugger_bpt)
|
||||
DEBUGGER_BOILERPLATE(debugger_sstep)
|
||||
DEBUGGER_BOILERPLATE(debugger_iabr_match)
|
||||
DEBUGGER_BOILERPLATE(debugger_dabr_match)
|
||||
DEBUGGER_BOILERPLATE(debugger_fault_handler)
|
||||
|
||||
#ifdef CONFIG_XMON
|
||||
extern void xmon_init(int enable);
|
||||
#endif
|
||||
|
||||
#else
|
||||
static inline int debugger(struct pt_regs *regs) { return 0; }
|
||||
static inline int debugger_ipi(struct pt_regs *regs) { return 0; }
|
||||
static inline int debugger_bpt(struct pt_regs *regs) { return 0; }
|
||||
static inline int debugger_sstep(struct pt_regs *regs) { return 0; }
|
||||
static inline int debugger_iabr_match(struct pt_regs *regs) { return 0; }
|
||||
static inline int debugger_dabr_match(struct pt_regs *regs) { return 0; }
|
||||
static inline int debugger_fault_handler(struct pt_regs *regs) { return 0; }
|
||||
#endif
|
||||
|
||||
extern int set_dabr(unsigned long dabr);
|
||||
extern void _exception(int signr, struct pt_regs *regs, int code,
|
||||
unsigned long addr);
|
||||
extern int fix_alignment(struct pt_regs *regs);
|
||||
extern void bad_page_fault(struct pt_regs *regs, unsigned long address,
|
||||
int sig);
|
||||
extern void show_regs(struct pt_regs * regs);
|
||||
extern void low_hash_fault(struct pt_regs *regs, unsigned long address);
|
||||
extern int die(const char *str, struct pt_regs *regs, long err);
|
||||
|
||||
extern int _get_PVR(void);
|
||||
extern void giveup_fpu(struct task_struct *);
|
||||
extern void disable_kernel_fp(void);
|
||||
extern void flush_fp_to_thread(struct task_struct *);
|
||||
extern void enable_kernel_fp(void);
|
||||
extern void giveup_altivec(struct task_struct *);
|
||||
extern void disable_kernel_altivec(void);
|
||||
extern void enable_kernel_altivec(void);
|
||||
extern int emulate_altivec(struct pt_regs *);
|
||||
extern void cvt_fd(float *from, double *to, struct thread_struct *thread);
|
||||
extern void cvt_df(double *from, float *to, struct thread_struct *thread);
|
||||
|
||||
#ifdef CONFIG_ALTIVEC
|
||||
extern void flush_altivec_to_thread(struct task_struct *);
|
||||
#else
|
||||
static inline void flush_altivec_to_thread(struct task_struct *t)
|
||||
{
|
||||
}
|
||||
#endif
|
||||
|
||||
static inline void flush_spe_to_thread(struct task_struct *t)
|
||||
{
|
||||
}
|
||||
|
||||
extern int mem_init_done; /* set on boot once kmalloc can be called */
|
||||
extern unsigned long memory_limit;
|
||||
|
||||
/* EBCDIC -> ASCII conversion for [0-9A-Z] on iSeries */
|
||||
extern unsigned char e2a(unsigned char);
|
||||
|
||||
extern struct task_struct *__switch_to(struct task_struct *,
|
||||
struct task_struct *);
|
||||
#define switch_to(prev, next, last) ((last) = __switch_to((prev), (next)))
|
||||
|
||||
struct thread_struct;
|
||||
extern struct task_struct * _switch(struct thread_struct *prev,
|
||||
struct thread_struct *next);
|
||||
|
||||
extern unsigned long klimit;
|
||||
|
||||
extern int powersave_nap; /* set if nap mode can be used in idle loop */
|
||||
|
||||
/*
|
||||
* Atomic exchange
|
||||
*
|
||||
* Changes the memory location '*ptr' to be val and returns
|
||||
* the previous value stored there.
|
||||
*
|
||||
* Inline asm pulled from arch/ppc/kernel/misc.S so ppc64
|
||||
* is more like most of the other architectures.
|
||||
*/
|
||||
static __inline__ unsigned long
|
||||
__xchg_u32(volatile unsigned int *m, unsigned long val)
|
||||
{
|
||||
unsigned long dummy;
|
||||
|
||||
__asm__ __volatile__(
|
||||
EIEIO_ON_SMP
|
||||
"1: lwarx %0,0,%3 # __xchg_u32\n\
|
||||
stwcx. %2,0,%3\n\
|
||||
2: bne- 1b"
|
||||
ISYNC_ON_SMP
|
||||
: "=&r" (dummy), "=m" (*m)
|
||||
: "r" (val), "r" (m)
|
||||
: "cc", "memory");
|
||||
|
||||
return (dummy);
|
||||
}
|
||||
|
||||
static __inline__ unsigned long
|
||||
__xchg_u64(volatile long *m, unsigned long val)
|
||||
{
|
||||
unsigned long dummy;
|
||||
|
||||
__asm__ __volatile__(
|
||||
EIEIO_ON_SMP
|
||||
"1: ldarx %0,0,%3 # __xchg_u64\n\
|
||||
stdcx. %2,0,%3\n\
|
||||
2: bne- 1b"
|
||||
ISYNC_ON_SMP
|
||||
: "=&r" (dummy), "=m" (*m)
|
||||
: "r" (val), "r" (m)
|
||||
: "cc", "memory");
|
||||
|
||||
return (dummy);
|
||||
}
|
||||
|
||||
/*
|
||||
* This function doesn't exist, so you'll get a linker error
|
||||
* if something tries to do an invalid xchg().
|
||||
*/
|
||||
extern void __xchg_called_with_bad_pointer(void);
|
||||
|
||||
static __inline__ unsigned long
|
||||
__xchg(volatile void *ptr, unsigned long x, unsigned int size)
|
||||
{
|
||||
switch (size) {
|
||||
case 4:
|
||||
return __xchg_u32(ptr, x);
|
||||
case 8:
|
||||
return __xchg_u64(ptr, x);
|
||||
}
|
||||
__xchg_called_with_bad_pointer();
|
||||
return x;
|
||||
}
|
||||
|
||||
#define xchg(ptr,x) \
|
||||
({ \
|
||||
__typeof__(*(ptr)) _x_ = (x); \
|
||||
(__typeof__(*(ptr))) __xchg((ptr), (unsigned long)_x_, sizeof(*(ptr))); \
|
||||
})
|
||||
|
||||
#define tas(ptr) (xchg((ptr),1))
|
||||
|
||||
#define __HAVE_ARCH_CMPXCHG 1
|
||||
|
||||
static __inline__ unsigned long
|
||||
__cmpxchg_u32(volatile unsigned int *p, unsigned long old, unsigned long new)
|
||||
{
|
||||
unsigned int prev;
|
||||
|
||||
__asm__ __volatile__ (
|
||||
EIEIO_ON_SMP
|
||||
"1: lwarx %0,0,%2 # __cmpxchg_u32\n\
|
||||
cmpw 0,%0,%3\n\
|
||||
bne- 2f\n\
|
||||
stwcx. %4,0,%2\n\
|
||||
bne- 1b"
|
||||
ISYNC_ON_SMP
|
||||
"\n\
|
||||
2:"
|
||||
: "=&r" (prev), "=m" (*p)
|
||||
: "r" (p), "r" (old), "r" (new), "m" (*p)
|
||||
: "cc", "memory");
|
||||
|
||||
return prev;
|
||||
}
|
||||
|
||||
static __inline__ unsigned long
|
||||
__cmpxchg_u64(volatile unsigned long *p, unsigned long old, unsigned long new)
|
||||
{
|
||||
unsigned long prev;
|
||||
|
||||
__asm__ __volatile__ (
|
||||
EIEIO_ON_SMP
|
||||
"1: ldarx %0,0,%2 # __cmpxchg_u64\n\
|
||||
cmpd 0,%0,%3\n\
|
||||
bne- 2f\n\
|
||||
stdcx. %4,0,%2\n\
|
||||
bne- 1b"
|
||||
ISYNC_ON_SMP
|
||||
"\n\
|
||||
2:"
|
||||
: "=&r" (prev), "=m" (*p)
|
||||
: "r" (p), "r" (old), "r" (new), "m" (*p)
|
||||
: "cc", "memory");
|
||||
|
||||
return prev;
|
||||
}
|
||||
|
||||
/* This function doesn't exist, so you'll get a linker error
|
||||
if something tries to do an invalid cmpxchg(). */
|
||||
extern void __cmpxchg_called_with_bad_pointer(void);
|
||||
|
||||
static __inline__ unsigned long
|
||||
__cmpxchg(volatile void *ptr, unsigned long old, unsigned long new,
|
||||
unsigned int size)
|
||||
{
|
||||
switch (size) {
|
||||
case 4:
|
||||
return __cmpxchg_u32(ptr, old, new);
|
||||
case 8:
|
||||
return __cmpxchg_u64(ptr, old, new);
|
||||
}
|
||||
__cmpxchg_called_with_bad_pointer();
|
||||
return old;
|
||||
}
|
||||
|
||||
#define cmpxchg(ptr,o,n)\
|
||||
((__typeof__(*(ptr)))__cmpxchg((ptr),(unsigned long)(o),\
|
||||
(unsigned long)(n),sizeof(*(ptr))))
|
||||
|
||||
/*
|
||||
* We handle most unaligned accesses in hardware. On the other hand
|
||||
* unaligned DMA can be very expensive on some ppc64 IO chips (it does
|
||||
* powers of 2 writes until it reaches sufficient alignment).
|
||||
*
|
||||
* Based on this we disable the IP header alignment in network drivers.
|
||||
*/
|
||||
#define NET_IP_ALIGN 0
|
||||
|
||||
#define arch_align_stack(x) (x)
|
||||
|
||||
extern unsigned long reloc_offset(void);
|
||||
|
||||
#endif /* __KERNEL__ */
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user