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SubjectPATCH: clean up the IDE iops, add ones for a dead iface
Date
From
Also adds the new OUTBSYNC iop

diff -u --new-file --recursive --exclude-from /usr/src/exclude linux-2.5.61/drivers/ide/ide-iops.c linux-2.5.61-ac2/drivers/ide/ide-iops.c
--- linux-2.5.61/drivers/ide/ide-iops.c 2003-02-10 18:38:18.000000000 +0000
+++ linux-2.5.61-ac2/drivers/ide/ide-iops.c 2003-02-18 18:06:17.000000000 +0000
@@ -31,60 +31,129 @@
#include <asm/io.h>
#include <asm/bitops.h>

+/*
+ * IDE operator we assign to an unplugged device so that
+ * we don't trash new hardware assigned the same resources
+ */
+
+static u8 ide_unplugged_inb (unsigned long port)
+{
+ return 0xFF;
+}
+
+static u16 ide_unplugged_inw (unsigned long port)
+{
+ return 0xFFFF;
+}
+
+static void ide_unplugged_insw (unsigned long port, void *addr, u32 count)
+{
+}
+
+static u32 ide_unplugged_inl (unsigned long port)
+{
+ return 0xFFFFFFFF;
+}
+
+static void ide_unplugged_insl (unsigned long port, void *addr, u32 count)
+{
+}
+
+static void ide_unplugged_outb (u8 addr, unsigned long port)
+{
+}
+
+static void ide_unplugged_outw (u16 addr, unsigned long port)
+{
+}
+
+static void ide_unplugged_outsw (unsigned long port, void *addr, u32 count)
+{
+}
+
+static void ide_unplugged_outl (u32 addr, unsigned long port)
+{
+}
+
+static void ide_unplugged_outsl (unsigned long port, void *addr, u32 count)
+{
+}

-static u8 ide_inb (ide_ioreg_t port)
+void unplugged_hwif_iops (ide_hwif_t *hwif)
+{
+ hwif->OUTB = ide_unplugged_outb;
+ hwif->OUTBSYNC = ide_unplugged_outb;
+ hwif->OUTW = ide_unplugged_outw;
+ hwif->OUTL = ide_unplugged_outl;
+ hwif->OUTSW = ide_unplugged_outsw;
+ hwif->OUTSL = ide_unplugged_outsl;
+ hwif->INB = ide_unplugged_inb;
+ hwif->INW = ide_unplugged_inw;
+ hwif->INL = ide_unplugged_inl;
+ hwif->INSW = ide_unplugged_insw;
+ hwif->INSL = ide_unplugged_insl;
+}
+
+EXPORT_SYMBOL(unplugged_hwif_iops);
+
+/*
+ * Conventional PIO operations for ATA devices
+ */
+
+static u8 ide_inb (unsigned long port)
{
return (u8) inb(port);
}

-static u16 ide_inw (ide_ioreg_t port)
+static u16 ide_inw (unsigned long port)
{
return (u16) inw(port);
}

-static void ide_insw (ide_ioreg_t port, void *addr, u32 count)
+static void ide_insw (unsigned long port, void *addr, u32 count)
{
return insw(port, addr, count);
}

-static u32 ide_inl (ide_ioreg_t port)
+static u32 ide_inl (unsigned long port)
{
return (u32) inl(port);
}

-static void ide_insl (ide_ioreg_t port, void *addr, u32 count)
+static void ide_insl (unsigned long port, void *addr, u32 count)
{
insl(port, addr, count);
}

-static void ide_outb (u8 value, ide_ioreg_t port)
+static void ide_outb (u8 addr, unsigned long port)
{
- outb(value, port);
+ outb(addr, port);
}

-static void ide_outw (u16 value, ide_ioreg_t port)
+static void ide_outw (u16 addr, unsigned long port)
{
- outw(value, port);
+ outw(addr, port);
}

-static void ide_outsw (ide_ioreg_t port, void *addr, u32 count)
+static void ide_outsw (unsigned long port, void *addr, u32 count)
{
outsw(port, addr, count);
}

-static void ide_outl (u32 value, ide_ioreg_t port)
+static void ide_outl (u32 addr, unsigned long port)
{
- outl(value, port);
+ outl(addr, port);
}

-static void ide_outsl (ide_ioreg_t port, void *addr, u32 count)
+static void ide_outsl (unsigned long port, void *addr, u32 count)
{
- outsl(port, addr, count);
+ return outsl(port, addr, count);
}

void default_hwif_iops (ide_hwif_t *hwif)
{
hwif->OUTB = ide_outb;
+ hwif->OUTBSYNC = ide_outb;
hwif->OUTW = ide_outw;
hwif->OUTL = ide_outl;
hwif->OUTSW = ide_outsw;
@@ -98,78 +167,66 @@

EXPORT_SYMBOL(default_hwif_iops);

-static u8 ide_mm_inb (ide_ioreg_t port)
+/*
+ * MMIO operations, typically used for SATA controllers
+ */
+
+static u8 ide_mm_inb (unsigned long port)
{
return (u8) readb(port);
}

-static u16 ide_mm_inw (ide_ioreg_t port)
+static u16 ide_mm_inw (unsigned long port)
{
return (u16) readw(port);
}

-static void ide_mm_insw (ide_ioreg_t port, void *addr, u32 count)
+static void ide_mm_insw (unsigned long port, void *addr, u32 count)
{
-#ifdef CONFIG_PPC
- /* Can we move the barrier out of the loop ? */
- while (count--) { *(u16 *)addr = __raw_readw(port); iobarrier_r(); addr += 2; }
-#else /* everything else is sane benh */
- while (count--) { *(u16 *)addr = readw(port); addr += 2; }
-#endif
+ __ide_mm_insw(port, addr, count);
}

-static u32 ide_mm_inl (ide_ioreg_t port)
+static u32 ide_mm_inl (unsigned long port)
{
return (u32) readl(port);
}

-static void ide_mm_insl (ide_ioreg_t port, void *addr, u32 count)
+static void ide_mm_insl (unsigned long port, void *addr, u32 count)
{
-#ifdef CONFIG_PPC
- /* Can we move the barrier out of the loop ? */
- while (count--) { *(u32 *)addr = __raw_readl(port); iobarrier_r(); addr += 4; }
-#else /* everything else is sane benh */
- while (count--) { *(u32 *)addr = readl(port); addr += 4; }
-#endif
+ __ide_mm_insl(port, addr, count);
}

-static void ide_mm_outb (u8 value, ide_ioreg_t port)
+static void ide_mm_outb (u8 value, unsigned long port)
{
writeb(value, port);
}

-static void ide_mm_outw (u16 value, ide_ioreg_t port)
+static void ide_mm_outw (u16 value, unsigned long port)
{
writew(value, port);
}

-static void ide_mm_outsw (ide_ioreg_t port, void *addr, u32 count)
+static void ide_mm_outsw (unsigned long port, void *addr, u32 count)
{
-#ifdef CONFIG_PPC
- /* Can we move the barrier out of the loop ? */
- while (count--) { __raw_writew(*(u16 *)addr, port); iobarrier_w(); addr += 2; }
-#else /* everything else is sane benh */
- while (count--) { writew(*(u16 *)addr, port); addr += 2; }
-#endif
+ __ide_mm_outsw(port, addr, count);
}

-static void ide_mm_outl (u32 value, ide_ioreg_t port)
+static void ide_mm_outl (u32 value, unsigned long port)
{
writel(value, port);
}

-static void ide_mm_outsl (ide_ioreg_t port, void *addr, u32 count)
+static void ide_mm_outsl (unsigned long port, void *addr, u32 count)
{
-#ifdef CONFIG_PPC
- while (count--) { __raw_writel(*(u32 *)addr, port); iobarrier_w(); addr += 4; }
-#else /* everything else is sane benh */
- while (count--) { writel(*(u32 *)addr, port); addr += 4; }
-#endif
+ __ide_mm_outsl(port, addr, count);
}

void default_hwif_mmiops (ide_hwif_t *hwif)
{
hwif->OUTB = ide_mm_outb;
+ /* Most systems will need to override OUTBSYNC, alas however
+ this one is controller specific! */
+ hwif->OUTBSYNC = ide_mm_outb;
hwif->OUTW = ide_mm_outw;
hwif->OUTL = ide_mm_outl;
hwif->OUTSW = ide_mm_outsw;
-
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