From: Ralf Baechle <ralf@oss.sgi.com>
To: Pete Popov <ppopov@mvista.com>
Cc: "Maciej W. Rozycki" <macro@ds2.pg.gda.pl>,
linux-mips@fnet.fr, linux-mips <linux-mips@oss.sgi.com>
Subject: Re: [patch] wbflush() fixes and updates
Date: Wed, 31 Jul 2002 22:16:31 +0200 [thread overview]
Message-ID: <20020731221631.B6048@dea.linux-mips.net> (raw)
In-Reply-To: <1027527551.18017.13.camel@zeus.mvista.com>; from ppopov@mvista.com on Wed, Jul 24, 2002 at 10:41:14PM +0200
Pete,
if you want to post to linux-mips@fnet.fr (as long as that list still
exists ...) you'll have to subscribe. The list robot which I can't
configure myself is configured to only permit postings by subscribers.
Do you want me to subscribe you?
Ralf
On Wed, Jul 24, 2002 at 10:41:14PM +0200, Pete Popov wrote:
> Date: Wed, 24 Jul 2002 22:41:14 +0200 (MET DST)
> Subject: Re: [patch] wbflush() fixes and updates
> From: Pete Popov <ppopov@mvista.com>
> To: "Maciej W. Rozycki" <macro@ds2.pg.gda.pl>
> Cc: Ralf Baechle <ralf@uni-koblenz.de>, linux-mips@fnet.fr,
> linux-mips
> <linux-mips@oss.sgi.com>
> Content-Type: text/plain
>
> On Wed, 2002-07-24 at 08:34, Maciej W. Rozycki wrote:
> > Hello,
> >
> > Here is a follow-on patch to the recent synchronization rewrite. It
> > converts a few of wbflush() references to iob() (functionally equivalent,
> > but with a somewhat more consistent naming) and it removes a few
> > unnecessary private __wbflush() implementations (that now are covered by
> > the generic code). Finally, it fixes the DECstation __wbflush()
> > implementation to match hardware reality.
> >
> > OK to apply?
>
> The Au1x00 looks fine. I suppose I'll have to update the defconfig
> files to include CONFIG_CPU_HAS_SYNC.
>
> Pete
>
> > Maciej
> >
> > --
> > + Maciej W. Rozycki, Technical University of Gdansk, Poland +
> > +--------------------------------------------------------------+
> > + e-mail: macro@ds2.pg.gda.pl, PGP key available +
> >
> > patch-mips-2.4.19-rc1-20020719-wbflush-9
> > diff -up --recursive --new-file linux-mips-2.4.19-rc1-20020719.macro/arch/mips/au1000/pb1000/setup.c linux-mips-2.4.19-rc1-20020719/arch/mips/au1000/pb1000/setup.c
> > --- linux-mips-2.4.19-rc1-20020719.macro/arch/mips/au1000/pb1000/setup.c 2002-07-05 02:57:37.000000000 +0000
> > +++ linux-mips-2.4.19-rc1-20020719/arch/mips/au1000/pb1000/setup.c 2002-07-23 21:25:22.000000000 +0000
> > @@ -67,7 +67,6 @@ extern struct ide_ops std_ide_ops;
> > extern struct ide_ops *ide_ops;
> > #endif
> >
> > -void (*__wbflush) (void);
> > extern struct rtc_ops no_rtc_ops;
> > extern char * __init prom_getcmdline(void);
> > extern void au1000_restart(char *);
> > @@ -78,11 +77,6 @@ extern struct resource iomem_resource;
> >
> > void __init bus_error_init(void) { /* nothing */ }
> >
> > -void au1000_wbflush(void)
> > -{
> > - __asm__ volatile ("sync");
> > -}
> > -
> > void __init au1000_setup(void)
> > {
> > char *argptr;
> > @@ -103,7 +97,6 @@ void __init au1000_setup(void)
> > #endif
> >
> > rtc_ops = &no_rtc_ops;
> > - __wbflush = au1000_wbflush;
> > _machine_restart = au1000_restart;
> > _machine_halt = au1000_halt;
> > _machine_power_off = au1000_power_off;
> > diff -up --recursive --new-file linux-mips-2.4.19-rc1-20020719.macro/arch/mips/au1000/pb1100/setup.c linux-mips-2.4.19-rc1-20020719/arch/mips/au1000/pb1100/setup.c
> > --- linux-mips-2.4.19-rc1-20020719.macro/arch/mips/au1000/pb1100/setup.c 2002-07-14 21:20:57.000000000 +0000
> > +++ linux-mips-2.4.19-rc1-20020719/arch/mips/au1000/pb1100/setup.c 2002-07-23 21:25:56.000000000 +0000
> > @@ -71,7 +71,6 @@ extern struct ide_ops *ide_ops;
> > extern struct rtc_ops pb1500_rtc_ops;
> > #endif
> >
> > -void (*__wbflush) (void);
> > extern char * __init prom_getcmdline(void);
> > extern void au1000_restart(char *);
> > extern void au1000_halt(void);
> > @@ -80,11 +79,6 @@ extern struct resource ioport_resource;
> > extern struct resource iomem_resource;
> >
> >
> > -void au1100_wbflush(void)
> > -{
> > - __asm__ volatile ("sync");
> > -}
> > -
> > void __init bus_error_init(void) { /* nothing */ }
> >
> > void __init au1100_setup(void)
> > @@ -112,7 +106,6 @@ void __init au1100_setup(void)
> > argptr = prom_getcmdline();
> > #endif
> >
> > - __wbflush = au1100_wbflush;
> > _machine_restart = au1000_restart;
> > _machine_halt = au1000_halt;
> > _machine_power_off = au1000_power_off;
> > diff -up --recursive --new-file linux-mips-2.4.19-rc1-20020719.macro/arch/mips/au1000/pb1500/setup.c linux-mips-2.4.19-rc1-20020719/arch/mips/au1000/pb1500/setup.c
> > --- linux-mips-2.4.19-rc1-20020719.macro/arch/mips/au1000/pb1500/setup.c 2002-07-15 02:57:11.000000000 +0000
> > +++ linux-mips-2.4.19-rc1-20020719/arch/mips/au1000/pb1500/setup.c 2002-07-23 21:26:24.000000000 +0000
> > @@ -71,7 +71,6 @@ extern struct ide_ops *ide_ops;
> > extern struct rtc_ops pb1500_rtc_ops;
> > #endif
> >
> > -void (*__wbflush) (void);
> > extern char * __init prom_getcmdline(void);
> > extern void au1000_restart(char *);
> > extern void au1000_halt(void);
> > @@ -82,11 +81,6 @@ extern struct resource iomem_resource;
> >
> > void __init bus_error_init(void) { /* nothing */ }
> >
> > -void au1500_wbflush(void)
> > -{
> > - __asm__ volatile ("sync");
> > -}
> > -
> > void __init au1500_setup(void)
> > {
> > char *argptr;
> > @@ -112,7 +106,6 @@ void __init au1500_setup(void)
> > argptr = prom_getcmdline();
> > #endif
> >
> > - __wbflush = au1500_wbflush;
> > _machine_restart = au1000_restart;
> > _machine_halt = au1000_halt;
> > _machine_power_off = au1000_power_off;
> > diff -up --recursive --new-file linux-mips-2.4.19-rc1-20020719.macro/arch/mips/baget/Makefile linux-mips-2.4.19-rc1-20020719/arch/mips/baget/Makefile
> > --- linux-mips-2.4.19-rc1-20020719.macro/arch/mips/baget/Makefile 2001-01-11 05:25:50.000000000 +0000
> > +++ linux-mips-2.4.19-rc1-20020719/arch/mips/baget/Makefile 2002-07-23 21:27:40.000000000 +0000
> > @@ -14,7 +14,7 @@ O_TARGET := baget.a
> >
> > export-objs := vacserial.o vacrtc.o
> > obj-y := baget.o print.o setup.o time.o irq.o bagetIRQ.o \
> > - reset.o wbflush.o
> > + reset.o
> > obj-$(CONFIG_SERIAL) += vacserial.o
> > obj-$(CONFIG_VAC_RTC) += vacrtc.o
> >
> > diff -up --recursive --new-file linux-mips-2.4.19-rc1-20020719.macro/arch/mips/baget/wbflush.c linux-mips-2.4.19-rc1-20020719/arch/mips/baget/wbflush.c
> > --- linux-mips-2.4.19-rc1-20020719.macro/arch/mips/baget/wbflush.c 2000-03-28 04:26:02.000000000 +0000
> > +++ linux-mips-2.4.19-rc1-20020719/arch/mips/baget/wbflush.c 1970-01-01 00:00:00.000000000 +0000
> > @@ -1,24 +0,0 @@
> > -/*
> > - * Setup the right wbflush routine for Baget/MIPS.
> > - *
> > - * Copyright (C) 1999 Gleb Raiko & Vladimir Roganov
> > - */
> > -
> > -#include <linux/init.h>
> > -#include <asm/bootinfo.h>
> > -
> > -void (*__wbflush) (void);
> > -
> > -static void wbflush_baget(void);
> > -
> > -void __init wbflush_setup(void)
> > -{
> > - __wbflush = wbflush_baget;
> > -}
> > -
> > -/*
> > - * Baget/MIPS doesnt need to write back the WB.
> > - */
> > -static void wbflush_baget(void)
> > -{
> > -}
> > diff -up --recursive --new-file linux-mips-2.4.19-rc1-20020719.macro/arch/mips/dec/Makefile linux-mips-2.4.19-rc1-20020719/arch/mips/dec/Makefile
> > --- linux-mips-2.4.19-rc1-20020719.macro/arch/mips/dec/Makefile 2002-06-26 03:04:35.000000000 +0000
> > +++ linux-mips-2.4.19-rc1-20020719/arch/mips/dec/Makefile 2002-07-21 18:11:04.000000000 +0000
> > @@ -14,9 +14,10 @@ all: dec.o
> >
> > export-objs := setup.o wbflush.o
> > obj-y := int-handler.o ioasic-irq.o kn02-irq.o reset.o rtc-dec.o setup.o \
> > - time.o wbflush.o
> > + time.o
> >
> > obj-$(CONFIG_PROM_CONSOLE) += promcon.o
> > +obj-$(CONFIG_CPU_HAS_WB) += wbflush.o
> >
> > int-handler.o: int-handler.S
> >
> > diff -up --recursive --new-file linux-mips-2.4.19-rc1-20020719.macro/arch/mips/dec/ioasic-irq.c linux-mips-2.4.19-rc1-20020719/arch/mips/dec/ioasic-irq.c
> > --- linux-mips-2.4.19-rc1-20020719.macro/arch/mips/dec/ioasic-irq.c 2002-04-09 02:27:12.000000000 +0000
> > +++ linux-mips-2.4.19-rc1-20020719/arch/mips/dec/ioasic-irq.c 2002-04-16 20:53:43.000000000 +0000
> > @@ -84,6 +84,7 @@ static inline void ack_ioasic_irq(unsign
> > spin_lock(&ioasic_lock);
> > mask_ioasic_irq(irq);
> > spin_unlock(&ioasic_lock);
> > + fast_iob();
> > }
> >
> > static inline void end_ioasic_irq(unsigned int irq)
> > @@ -119,6 +120,7 @@ static struct hw_interrupt_type ioasic_i
> > static inline void end_ioasic_dma_irq(unsigned int irq)
> > {
> > clear_ioasic_irq(irq);
> > + fast_iob();
> > end_ioasic_irq(irq);
> > }
> >
> > @@ -142,6 +144,7 @@ void __init init_ioasic_irqs(int base)
> >
> > /* Mask interrupts. */
> > ioasic_write(SIMR, 0);
> > + fast_iob();
> >
> > for (i = base; i < base + IO_INR_DMA; i++) {
> > irq_desc[i].status = IRQ_DISABLED;
> > diff -up --recursive --new-file linux-mips-2.4.19-rc1-20020719.macro/arch/mips/dec/kn02-irq.c linux-mips-2.4.19-rc1-20020719/arch/mips/dec/kn02-irq.c
> > --- linux-mips-2.4.19-rc1-20020719.macro/arch/mips/dec/kn02-irq.c 2002-04-09 02:27:12.000000000 +0000
> > +++ linux-mips-2.4.19-rc1-20020719/arch/mips/dec/kn02-irq.c 2002-04-16 20:53:43.000000000 +0000
> > @@ -83,6 +83,7 @@ static void ack_kn02_irq(unsigned int ir
> > spin_lock(&kn02_lock);
> > mask_kn02_irq(irq);
> > spin_unlock(&kn02_lock);
> > + iob();
> > }
> >
> > static void end_kn02_irq(unsigned int irq)
> > @@ -113,6 +114,7 @@ void __init init_kn02_irqs(int base)
> > /* Mask interrupts and preset write-only bits. */
> > cached_kn02_csr = (*csr & ~0xff0000) | 0xff;
> > *csr = cached_kn02_csr;
> > + iob();
> >
> > for (i = base; i < base + KN02_IRQ_LINES; i++) {
> > irq_desc[i].status = IRQ_DISABLED;
> > diff -up --recursive --new-file linux-mips-2.4.19-rc1-20020719.macro/arch/mips/dec/setup.c linux-mips-2.4.19-rc1-20020719/arch/mips/dec/setup.c
> > --- linux-mips-2.4.19-rc1-20020719.macro/arch/mips/dec/setup.c 2002-07-19 03:01:49.000000000 +0000
> > +++ linux-mips-2.4.19-rc1-20020719/arch/mips/dec/setup.c 2002-07-21 18:11:04.000000000 +0000
> > @@ -25,6 +25,7 @@
> > #include <asm/mipsregs.h>
> > #include <asm/reboot.h>
> > #include <asm/traps.h>
> > +#include <asm/wbflush.h>
> >
> > #include <asm/dec/interrupts.h>
> > #include <asm/dec/kn01.h>
> > @@ -89,8 +90,6 @@ static struct irqaction fpuirq = {NULL,
> > static struct irqaction haltirq = {dec_intr_halt, 0, 0, "halt", NULL, NULL};
> >
> >
> > -extern void wbflush_setup(void);
> > -
> > extern struct rtc_ops dec_rtc_ops;
> >
> > void (*board_time_init) (struct irqaction * irq);
> > diff -up --recursive --new-file linux-mips-2.4.19-rc1-20020719.macro/arch/mips/dec/wbflush.c linux-mips-2.4.19-rc1-20020719/arch/mips/dec/wbflush.c
> > --- linux-mips-2.4.19-rc1-20020719.macro/arch/mips/dec/wbflush.c 2001-11-06 05:26:15.000000000 +0000
> > +++ linux-mips-2.4.19-rc1-20020719/arch/mips/dec/wbflush.c 2002-02-04 01:03:17.000000000 +0000
> > @@ -11,15 +11,18 @@
> > * for more details.
> > *
> > * Copyright (C) 1998 Harald Koerfgen
> > + * Copyright (C) 2002 Maciej W. Rozycki
> > */
> >
> > -#include <asm/bootinfo.h>
> > #include <linux/init.h>
> >
> > +#include <asm/bootinfo.h>
> > +#include <asm/system.h>
> > +#include <asm/wbflush.h>
> > +
> > static void wbflush_kn01(void);
> > static void wbflush_kn210(void);
> > -static void wbflush_kn02ba(void);
> > -static void wbflush_kn03(void);
> > +static void wbflush_mips(void);
> >
> > void (*__wbflush) (void);
> >
> > @@ -27,28 +30,23 @@ void __init wbflush_setup(void)
> > {
> > switch (mips_machtype) {
> > case MACH_DS23100:
> > - __wbflush = wbflush_kn01;
> > - break;
> > - case MACH_DS5100: /* DS5100 MIPSMATE */
> > - __wbflush = wbflush_kn210;
> > - break;
> > case MACH_DS5000_200: /* DS5000 3max */
> > - __wbflush = wbflush_kn01;
> > - break;
> > + __wbflush = wbflush_kn01;
> > + break;
> > + case MACH_DS5100: /* DS5100 MIPSMATE */
> > + __wbflush = wbflush_kn210;
> > + break;
> > case MACH_DS5000_1XX: /* DS5000/100 3min */
> > - __wbflush = wbflush_kn02ba;
> > - break;
> > - case MACH_DS5000_2X0: /* DS5000/240 3max+ */
> > - __wbflush = wbflush_kn03;
> > - break;
> > case MACH_DS5000_XX: /* Personal DS5000/2x */
> > - __wbflush = wbflush_kn02ba;
> > - break;
> > + case MACH_DS5000_2X0: /* DS5000/240 3max+ */
> > + default:
> > + __wbflush = wbflush_mips;
> > + break;
> > }
> > }
> >
> > /*
> > - * For the DS3100 and DS5000/200 the writeback buffer functions
> > + * For the DS3100 and DS5000/200 the R2020/R3220 writeback buffer functions
> > * as part of Coprocessor 0.
> > */
> > static void wbflush_kn01(void)
> > @@ -78,29 +76,16 @@ static void wbflush_kn210(void)
> > "mtc0\t$2,$12\n\t"
> > "nop\n\t"
> > ".set\tpop"
> > - : : :"$2", "$3");
> > -}
> > -
> > -/*
> > - * Looks like some magic with the System Interrupt Mask Register
> > - * in the famous IOASIC for kmins and maxines.
> > - */
> > -static void wbflush_kn02ba(void)
> > -{
> > - asm(".set\tpush\n\t"
> > - ".set\tnoreorder\n\t"
> > - "lui\t$2,0xbc04\n\t"
> > - "lw\t$3,0x120($2)\n\t"
> > - "lw\t$3,0x120($2)\n\t"
> > - ".set\tpop"
> > - : : :"$2", "$3");
> > + : : : "$2", "$3");
> > }
> >
> > /*
> > - * The DS500/2x0 doesnt need to write back the WB.
> > + * I/O ASIC systems use a standard writeback buffer that gets flushed
> > + * upon an uncached read.
> > */
> > -static void wbflush_kn03(void)
> > +static void wbflush_mips(void)
> > {
> > + __fast_iob();
> > }
> >
> > #include <linux/module.h>
> > diff -up --recursive --new-file linux-mips-2.4.19-rc1-20020719.macro/arch/mips/galileo-boards/ev96100/setup.c linux-mips-2.4.19-rc1-20020719/arch/mips/galileo-boards/ev96100/setup.c
> > --- linux-mips-2.4.19-rc1-20020719.macro/arch/mips/galileo-boards/ev96100/setup.c 2001-11-26 05:25:59.000000000 +0000
> > +++ linux-mips-2.4.19-rc1-20020719/arch/mips/galileo-boards/ev96100/setup.c 2002-07-23 21:30:52.000000000 +0000
> > @@ -52,8 +52,6 @@
> > #include <asm/galileo-boards/ev96100int.h>
> >
> >
> > -void (*__wbflush) (void);
> > -
> > #if defined(CONFIG_SERIAL_CONSOLE) || defined(CONFIG_PROM_CONSOLE)
> > extern void console_setup(char *, int *);
> > char serial_console[20];
> > @@ -65,11 +63,6 @@ extern void mips_reboot_setup(void);
> > extern struct rtc_ops no_rtc_ops;
> > extern struct resource ioport_resource;
> >
> > -static void rm7000_wbflush(void)
> > -{
> > - __asm__ __volatile__ ("sync");
> > -}
> > -
> > unsigned char mac_0_1[12];
> >
> >
> > @@ -83,7 +76,6 @@ void __init ev96100_setup(void)
> > char *argptr;
> >
> > clear_cp0_status(ST0_FR);
> > - __wbflush = rm7000_wbflush;
> >
> > if (config & 0x8) {
> > printk("Secondary cache is enabled\n");
> > diff -up --recursive --new-file linux-mips-2.4.19-rc1-20020719.macro/arch/mips/mm/c-r3k.c linux-mips-2.4.19-rc1-20020719/arch/mips/mm/c-r3k.c
> > --- linux-mips-2.4.19-rc1-20020719.macro/arch/mips/mm/c-r3k.c 2002-02-19 05:28:14.000000000 +0000
> > +++ linux-mips-2.4.19-rc1-20020719/arch/mips/mm/c-r3k.c 2002-03-24 21:16:14.000000000 +0000
> > @@ -19,7 +19,6 @@
> > #include <asm/system.h>
> > #include <asm/isadep.h>
> > #include <asm/io.h>
> > -#include <asm/wbflush.h>
> > #include <asm/bootinfo.h>
> > #include <asm/cpu.h>
> >
> > @@ -314,7 +313,7 @@ static void r3k_flush_cache_sigtramp(uns
> >
> > static void r3k_dma_cache_wback_inv(unsigned long start, unsigned long size)
> > {
> > - wbflush();
> > + iob();
> > r3k_flush_dcache_range(start, start + size);
> > }
> >
> > diff -up --recursive --new-file linux-mips-2.4.19-rc1-20020719.macro/arch/mips/mm/c-tx39.c linux-mips-2.4.19-rc1-20020719/arch/mips/mm/c-tx39.c
> > --- linux-mips-2.4.19-rc1-20020719.macro/arch/mips/mm/c-tx39.c 2001-12-01 05:26:01.000000000 +0000
> > +++ linux-mips-2.4.19-rc1-20020719/arch/mips/mm/c-tx39.c 2002-02-04 01:12:41.000000000 +0000
> > @@ -20,7 +20,6 @@
> > #include <asm/system.h>
> > #include <asm/isadep.h>
> > #include <asm/io.h>
> > -#include <asm/wbflush.h>
> > #include <asm/bootinfo.h>
> > #include <asm/cpu.h>
> >
> > @@ -63,8 +62,8 @@ static void tx39h_flush_icache_all(void)
> > static void tx39h_dma_cache_wback_inv(unsigned long addr, unsigned long size)
> > {
> > unsigned long end, a;
> > - wbflush();
> >
> > + iob();
> > a = addr & ~(dcache_lsize - 1);
> > end = (addr + size) & ~(dcache_lsize - 1);
> > while (1) {
> > diff -up --recursive --new-file linux-mips-2.4.19-rc1-20020719.macro/arch/mips/mm/tlb-r3k.c linux-mips-2.4.19-rc1-20020719/arch/mips/mm/tlb-r3k.c
> > --- linux-mips-2.4.19-rc1-20020719.macro/arch/mips/mm/tlb-r3k.c 2002-05-30 02:57:46.000000000 +0000
> > +++ linux-mips-2.4.19-rc1-20020719/arch/mips/mm/tlb-r3k.c 2002-06-15 15:38:41.000000000 +0000
> > @@ -20,7 +20,6 @@
> > #include <asm/system.h>
> > #include <asm/isadep.h>
> > #include <asm/io.h>
> > -#include <asm/wbflush.h>
> > #include <asm/bootinfo.h>
> > #include <asm/cpu.h>
> >
> > diff -up --recursive --new-file linux-mips-2.4.19-rc1-20020719.macro/drivers/char/dz.c linux-mips-2.4.19-rc1-20020719/drivers/char/dz.c
> > --- linux-mips-2.4.19-rc1-20020719.macro/drivers/char/dz.c 2002-06-27 02:58:15.000000000 +0000
> > +++ linux-mips-2.4.19-rc1-20020719/drivers/char/dz.c 2002-07-21 18:11:04.000000000 +0000
> > @@ -35,7 +35,6 @@
> > #include <linux/param.h>
> > #include <linux/tqueue.h>
> > #include <linux/interrupt.h>
> > -#include <asm-mips/wbflush.h>
> > #include <asm/dec/interrupts.h>
> >
> > #include <linux/console.h>
> > @@ -53,6 +52,8 @@
> > #include <linux/fs.h>
> > #include <asm/bootinfo.h>
> >
> > +#include <asm/system.h>
> > +
> > #define CONSOLE_LINE (3) /* for definition of struct console */
> >
> > extern int (*prom_printf) (char *,...);
> > @@ -1415,7 +1416,7 @@ int __init dz_init(void)
> > #ifndef CONFIG_SERIAL_CONSOLE
> > dz_out(info, DZ_CSR, DZ_CLR);
> > while ((tmp = dz_in(info, DZ_CSR)) & DZ_CLR);
> > - wbflush();
> > + iob();
> >
> > /* enable scanning */
> > dz_out(info, DZ_CSR, DZ_MSE);
> > diff -up --recursive --new-file linux-mips-2.4.19-rc1-20020719.macro/drivers/net/declance.c linux-mips-2.4.19-rc1-20020719/drivers/net/declance.c
> > --- linux-mips-2.4.19-rc1-20020719.macro/drivers/net/declance.c 2002-07-08 16:46:24.000000000 +0000
> > +++ linux-mips-2.4.19-rc1-20020719/drivers/net/declance.c 2002-07-21 18:11:05.000000000 +0000
> > @@ -62,7 +62,7 @@
> > #include <asm/dec/kn01.h>
> > #include <asm/dec/machtype.h>
> > #include <asm/dec/tc.h>
> > -#include <asm/wbflush.h>
> > +#include <asm/system.h>
> >
> > static char version[] __devinitdata =
> > "declance.c: v0.009 by Linux MIPS DECstation task force\n";
> > @@ -289,7 +289,7 @@ static struct net_device *root_lance_dev
> > static inline void writereg(volatile unsigned short *regptr, short value)
> > {
> > *regptr = value;
> > - wbflush();
> > + iob();
> > }
> >
> > /* Load the CSR registers */
> > @@ -369,7 +369,7 @@ void cp_to_buf(const int type, void *to,
> > }
> > }
> >
> > - wbflush();
> > + iob();
> > }
> >
> > void cp_from_buf(const int type, void *to, const void *from, int len)
> > @@ -497,7 +497,7 @@ static void lance_init_ring(struct net_d
> > if (i < 3 && ZERO)
> > printk("%d: 0x%8.8x(0x%8.8x)\n", i, leptr, (int) lp->rx_buf_ptr_cpu[i]);
> > }
> > - wbflush();
> > + iob();
> > }
> >
> > static int init_restart_lance(struct lance_private *lp)
> > @@ -794,7 +794,7 @@ static int lance_open(struct net_device
> > return -EAGAIN;
> > }
> > /* Enable I/O ASIC LANCE DMA. */
> > - wbflush();
> > + fast_wmb();
> > ioasic_write(SSR, ioasic_read(SSR) | LANCE_DMA_EN);
> > }
> >
> > @@ -823,7 +823,7 @@ static int lance_close(struct net_device
> > if (lp->dma_irq >= 0) {
> > /* Disable I/O ASIC LANCE DMA. */
> > ioasic_write(SSR, ioasic_read(SSR) & ~LANCE_DMA_EN);
> > - wbflush();
> > + fast_iob();
> > free_irq(lp->dma_irq, dev);
> > }
> > free_irq(dev->irq, dev);
> > diff -up --recursive --new-file linux-mips-2.4.19-rc1-20020719.macro/drivers/scsi/NCR53C9x.h linux-mips-2.4.19-rc1-20020719/drivers/scsi/NCR53C9x.h
> > --- linux-mips-2.4.19-rc1-20020719.macro/drivers/scsi/NCR53C9x.h 2001-10-19 04:29:11.000000000 +0000
> > +++ linux-mips-2.4.19-rc1-20020719/drivers/scsi/NCR53C9x.h 2002-02-04 01:14:34.000000000 +0000
> > @@ -144,12 +144,7 @@
> >
> > #ifndef MULTIPLE_PAD_SIZES
> >
> > -#ifdef CONFIG_CPU_HAS_WB
> > -#include <asm/wbflush.h>
> > -#define esp_write(__reg, __val) do{(__reg) = (__val); wbflush();} while(0)
> > -#else
> > -#define esp_write(__reg, __val) ((__reg) = (__val))
> > -#endif
> > +#define esp_write(__reg, __val) do{(__reg) = (__val); iob();} while(0)
> > #define esp_read(__reg) (__reg)
> >
> > struct ESP_regs {
> > diff -up --recursive --new-file linux-mips-2.4.19-rc1-20020719.macro/drivers/scsi/dec_esp.c linux-mips-2.4.19-rc1-20020719/drivers/scsi/dec_esp.c
> > --- linux-mips-2.4.19-rc1-20020719.macro/drivers/scsi/dec_esp.c 2002-04-10 02:58:49.000000000 +0000
> > +++ linux-mips-2.4.19-rc1-20020719/drivers/scsi/dec_esp.c 2002-07-21 18:12:55.000000000 +0000
> > @@ -46,6 +46,8 @@
> > #include <asm/dec/ioasic_ints.h>
> > #include <asm/dec/machtype.h>
> >
> > +#include <asm/system.h>
> > +
> > /*
> > * Once upon a time the pmaz code used to be working but
> > * it hasn't been maintained for quite some time.
> > @@ -308,17 +310,9 @@ static void scsi_dma_err_int(int irq, vo
> >
> > static void scsi_dma_int(int irq, void *dev_id, struct pt_regs *regs)
> > {
> > - volatile unsigned int *dummy = (volatile unsigned int *)KSEG1;
> > -
> > /* next page */
> > *scsi_next_ptr = ((*scsi_dma_ptr + PAGE_SIZE) & PAGE_MASK) << 3;
> > -
> > - /*
> > - * This routine will only work on IOASIC machines
> > - * so we can avoid an indirect function call here
> > - * and flush the writeback buffer the fast way
> > - */
> > - *dummy;
> > + fast_iob();
> > }
> >
> > static int dma_bytes_sent(struct NCR_ESP *esp, int fifo_count)
> > @@ -370,8 +364,6 @@ static void dma_dump_state(struct NCR_ES
> >
> > static void dma_init_read(struct NCR_ESP *esp, __u32 vaddress, int length)
> > {
> > - volatile unsigned int *dummy = (volatile unsigned int *)KSEG1;
> > -
> > if (vaddress & 3)
> > panic("dec_efs.c: unable to handle partial word transfers, yet...");
> >
> > @@ -384,17 +376,11 @@ static void dma_init_read(struct NCR_ESP
> > /* prepare for next page */
> > *scsi_next_ptr = ((vaddress + PAGE_SIZE) & PAGE_MASK) << 3;
> > *ioasic_ssr |= (SCSI_DMA_DIR | SCSI_DMA_EN);
> > -
> > - /*
> > - * see above
> > - */
> > - *dummy;
> > + fast_iob();
> > }
> >
> > static void dma_init_write(struct NCR_ESP *esp, __u32 vaddress, int length)
> > {
> > - volatile unsigned int *dummy = (volatile unsigned int *)KSEG1;
> > -
> > if (vaddress & 3)
> > panic("dec_efs.c: unable to handle partial word transfers, yet...");
> >
> > @@ -407,11 +393,7 @@ static void dma_init_write(struct NCR_ES
> > /* prepare for next page */
> > *scsi_next_ptr = ((vaddress + PAGE_SIZE) & PAGE_MASK) << 3;
> > *ioasic_ssr |= SCSI_DMA_EN;
> > -
> > - /*
> > - * see above
> > - */
> > - *dummy;
> > + fast_iob();
> > }
> >
> > static void dma_ints_off(struct NCR_ESP *esp)
> > @@ -492,6 +474,8 @@ static void pmaz_dma_init_read(struct NC
> >
> > *dmareg = TC_ESP_DMA_ADDR(esp->slot + DEC_SCSI_SRAM + ESP_TGT_DMA_SIZE);
> >
> > + iob();
> > +
> > esp_virt_buffer = vaddress;
> > scsi_current_length = length;
> > }
> > @@ -506,6 +490,7 @@ static void pmaz_dma_init_write(struct N
> > *dmareg = TC_ESP_DMAR_WRITE |
> > TC_ESP_DMA_ADDR(esp->slot + DEC_SCSI_SRAM + ESP_TGT_DMA_SIZE);
> >
> > + iob();
> > }
> >
> > static void pmaz_dma_ints_off(struct NCR_ESP *esp)
> > diff -up --recursive --new-file linux-mips-2.4.19-rc1-20020719.macro/drivers/tc/zs.c linux-mips-2.4.19-rc1-20020719/drivers/tc/zs.c
> > --- linux-mips-2.4.19-rc1-20020719.macro/drivers/tc/zs.c 2002-06-27 02:59:46.000000000 +0000
> > +++ linux-mips-2.4.19-rc1-20020719/drivers/tc/zs.c 2002-07-21 18:11:05.000000000 +0000
> > @@ -67,7 +67,6 @@
> > #include <asm/segment.h>
> > #include <asm/bitops.h>
> > #include <asm/uaccess.h>
> > -#include <asm/wbflush.h>
> > #include <asm/bootinfo.h>
> > #ifdef CONFIG_DECSTATION
> > #include <asm/dec/interrupts.h>
> > @@ -276,7 +275,7 @@ static inline unsigned char read_zsreg(s
> >
> > if (reg != 0) {
> > *channel->control = reg & 0xf;
> > - wbflush(); RECOVERY_DELAY;
> > + fast_iob(); RECOVERY_DELAY;
> > }
> > retval = *channel->control;
> > RECOVERY_DELAY;
> > @@ -288,10 +287,10 @@ static inline void write_zsreg(struct de
> > {
> > if (reg != 0) {
> > *channel->control = reg & 0xf;
> > - wbflush(); RECOVERY_DELAY;
> > + fast_iob(); RECOVERY_DELAY;
> > }
> > *channel->control = value;
> > - wbflush(); RECOVERY_DELAY;
> > + fast_iob(); RECOVERY_DELAY;
> > return;
> > }
> >
> > @@ -308,7 +307,7 @@ static inline void write_zsdata(struct d
> > unsigned char value)
> > {
> > *channel->data = value;
> > - wbflush(); RECOVERY_DELAY;
> > + fast_iob(); RECOVERY_DELAY;
> > return;
> > }
> >
> >
>
prev parent reply other threads:[~2002-07-31 20:17 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-07-24 15:34 [patch] wbflush() fixes and updates Maciej W. Rozycki
2002-07-24 16:19 ` Pete Popov
2002-07-24 16:24 ` Maciej W. Rozycki
2002-07-31 20:16 ` Ralf Baechle [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20020731221631.B6048@dea.linux-mips.net \
--to=ralf@oss.sgi.com \
--cc=linux-mips@fnet.fr \
--cc=linux-mips@oss.sgi.com \
--cc=macro@ds2.pg.gda.pl \
--cc=ppopov@mvista.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox