parisc: Add ioread64_hi_lo() and iowrite64_hi_lo()

Commit Message

Helge Deller Sept. 30, 2020, 3:20 p.m. UTC

The kernel test robot reports missing functions. Add them.

hppa-linux-ld: drivers/firmware/arm_scmi/perf.o: in function `scmi_perf_fc_ring_db':
 (.text+0x610): undefined reference to `ioread64_hi_lo'
 (.text+0x63c): undefined reference to `iowrite64_hi_lo'

Reported-by: kernel test robot <[e-mail]>
Signed-off-by: Helge Deller <[e-mail]>

Patch

diff --git a/arch/parisc/lib/iomap.c b/arch/parisc/lib/iomap.c
index ce400417d54e..f03adb1999e7 100644
--- 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_hi_lo(const void __iomem *addr)
+{
+	u32 low, high;
+
+	high = ioread32(addr + sizeof(u32));
+	low = ioread32(addr);
+
+	return low + ((u64)high << 32);
+}
+
 void iowrite8(u8 datum, void __iomem *addr)
 {
 	if (unlikely(INDIRECT_ADDR(addr))) {
@@ -409,6 +419,12 @@  void iowrite64be(u64 datum, void __iomem *addr)
 	}
 }

+void iowrite64_hi_lo(u64 val, void __iomem *addr)
+{
+	iowrite32(val >> 32, addr + sizeof(u32));
+	iowrite32(val, addr);
+}
+
 /* Repeating interfaces */

 void ioread8_rep(const void __iomem *addr, void *dst, unsigned long count)
@@ -511,6 +527,7 @@  EXPORT_SYMBOL(ioread32);
 EXPORT_SYMBOL(ioread32be);
 EXPORT_SYMBOL(ioread64);
 EXPORT_SYMBOL(ioread64be);
+EXPORT_SYMBOL(ioread64_hi_lo);
 EXPORT_SYMBOL(iowrite8);
 EXPORT_SYMBOL(iowrite16);
 EXPORT_SYMBOL(iowrite16be);
@@ -518,6 +535,7 @@  EXPORT_SYMBOL(iowrite32);
 EXPORT_SYMBOL(iowrite32be);
 EXPORT_SYMBOL(iowrite64);
 EXPORT_SYMBOL(iowrite64be);
+EXPORT_SYMBOL(iowrite64_hi_lo);
 EXPORT_SYMBOL(ioread8_rep);
 EXPORT_SYMBOL(ioread16_rep);
 EXPORT_SYMBOL(ioread32_rep);