diff mbox series

[v3,16/38] ppc: io.h: Use addrmap_ translation APIs only in post-relocation phase

Message ID 1614244979-48216-17-git-send-email-bmeng.cn@gmail.com
State Accepted
Commit 3320656944707aff7838b1ccb4c630143a67fe08
Delegated to: Priyanka Jain
Headers show
Series ppc: qemu: Convert qemu-ppce500 to driver model and enable additional driver support | expand

Commit Message

Bin Meng Feb. 25, 2021, 9:22 a.m. UTC 
In phys_to_virt() and virt_to_phys(), if CONFIG_ADDR_MAP is defined,
they use addrmap_ translation APIs to do the address translation.
However these APIs only work in post-relocation phase.

Update the code logic to fall back to use the default one when in
pre-relocation phase.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
---

(no changes since v1)

 arch/powerpc/include/asm/io.h | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)
diff mbox series

Patch

diff --git a/arch/powerpc/include/asm/io.h b/arch/powerpc/include/asm/io.h
index 6d76e3e..998a82a 100644
--- a/arch/powerpc/include/asm/io.h
+++ b/arch/powerpc/include/asm/io.h
@@ -10,7 +10,10 @@ 
 #include <asm/byteorder.h>
 
 #ifdef CONFIG_ADDR_MAP
+#include <asm/global_data.h>
 #include <addr_map.h>
+
+DECLARE_GLOBAL_DATA_PTR;
 #endif
 
 #define SIO_CONFIG_RA   0x398
@@ -303,20 +306,20 @@  static inline void out_be32(volatile unsigned __iomem *addr, u32 val)
 static inline void *phys_to_virt(phys_addr_t paddr)
 {
 #ifdef CONFIG_ADDR_MAP
-	return addrmap_phys_to_virt(paddr);
-#else
-	return (void *)((unsigned long)paddr);
+	if (gd->flags & GD_FLG_RELOC)
+		return addrmap_phys_to_virt(paddr);
 #endif
+	return (void *)((unsigned long)paddr);
 }
 #define phys_to_virt phys_to_virt
 
 static inline phys_addr_t virt_to_phys(void * vaddr)
 {
 #ifdef CONFIG_ADDR_MAP
-	return addrmap_virt_to_phys(vaddr);
-#else
-	return (phys_addr_t)((unsigned long)vaddr);
+	if (gd->flags & GD_FLG_RELOC)
+		return addrmap_virt_to_phys(vaddr);
 #endif
+	return (phys_addr_t)((unsigned long)vaddr);
 }
 #define virt_to_phys virt_to_phys