[PATCH 5.10 018/121] parisc: Add ioread64_lo_hi() and iowrite64_lo_hi()

Greg Kroah-Hartman
2022-02-21T09:10:08Z

From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

commit 18a1d5e1945385d9b5adc3fe11427ce4a9d2826e upstream.

It's a followup to the previous commit f15309d7ad5d ("parisc: Add
ioread64_hi_lo() and iowrite64_hi_lo()") which does only half of
the job. Add the rest, so we won't get a new kernel test robot
reports.

Fixes: f15309d7ad5d ("parisc: Add ioread64_hi_lo() and iowrite64_hi_lo()")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/parisc/lib/iomap.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)

--- a/arch/parisc/lib/iomap.c
+++ b/arch/parisc/lib/iomap.c
@@ -346,6 +346,16 @@ u64 ioread64be(const void __iomem *addr)
return *((u64 *)addr);
}

+u64 ioread64_lo_hi(const void __iomem *addr)
+{
+ u32 low, high;
+
+ low = ioread32(addr);
+ high = ioread32(addr + sizeof(u32));
+
+ return low + ((u64)high << 32);
+}
+
u64 ioread64_hi_lo(const void __iomem *addr)
{
u32 low, high;
@@ -419,6 +429,12 @@ void iowrite64be(u64 datum, void __iomem
}
}

+void iowrite64_lo_hi(u64 val, void __iomem *addr)
+{
+ iowrite32(val, addr);
+ iowrite32(val >> 32, addr + sizeof(u32));
+}
+
void iowrite64_hi_lo(u64 val, void __iomem *addr)
{
iowrite32(val >> 32, addr + sizeof(u32));
@@ -527,6 +543,7 @@ EXPORT_SYMBOL(ioread32);
EXPORT_SYMBOL(ioread32be);
EXPORT_SYMBOL(ioread64);
EXPORT_SYMBOL(ioread64be);
+EXPORT_SYMBOL(ioread64_lo_hi);
EXPORT_SYMBOL(ioread64_hi_lo);
EXPORT_SYMBOL(iowrite8);
EXPORT_SYMBOL(iowrite16);
@@ -535,6 +552,7 @@ EXPORT_SYMBOL(iowrite32);
EXPORT_SYMBOL(iowrite32be);
EXPORT_SYMBOL(iowrite64);
EXPORT_SYMBOL(iowrite64be);
+EXPORT_SYMBOL(iowrite64_lo_hi);
EXPORT_SYMBOL(iowrite64_hi_lo);
EXPORT_SYMBOL(ioread8_rep);
EXPORT_SYMBOL(ioread16_rep);