From 650c8b81a2b2242d8e42274933539ae33441ba3e Mon Sep 17 00:00:00 2001
From: Alexander von Gluck IV <kallisti5@unixzen.com>
Date: Thu, 20 Jun 2019 12:05:40 -0500
Subject: [PATCH] nvme: Use kernel private memory barriers
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Change-Id: I1747de7afb2a5b2ec845c1c14f013dbcb9bd72f8
Reviewed-on: https://review.haiku-os.org/c/1528
Reviewed-by: Alex von Gluck IV <kallisti5@unixzen.com>
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
Reviewed-by: Axel Dörfler <axeld@pinc-software.de>
---
 .../kernel/drivers/disk/nvme/compat/nvme_arch.h    | 14 +++++---------
 1 file changed, 5 insertions(+), 9 deletions(-)

diff --git a/src/add-ons/kernel/drivers/disk/nvme/compat/nvme_arch.h b/src/add-ons/kernel/drivers/disk/nvme/compat/nvme_arch.h
index d4d3a3e7fc..394d90e873 100644
--- a/src/add-ons/kernel/drivers/disk/nvme/compat/nvme_arch.h
+++ b/src/add-ons/kernel/drivers/disk/nvme/compat/nvme_arch.h
@@ -8,27 +8,23 @@
 #ifndef __NVME_ARCH_H__
 #define __NVME_ARCH_H__
 
+
 #include <OS.h>
+#include <arch_vm.h>
+#include <arch_atomic.h>
 
 
 #define NVME_ARCH_64 __HAIKU_ARCH_64_BIT
 #define NVME_MMIO_64BIT NVME_ARCH_64
 #define PAGE_SIZE B_PAGE_SIZE
-#define PAGE_SHIFT (12) // FIXME: values for other arches
 
 
 #ifndef asm
 #define asm __asm__
 #endif
 
-#if defined(__i386__) || defined(__amd64__)
-#define nvme_wmb()	__asm__ volatile("sfence" ::: "memory")
-#elif defined(__ARM__)
-#define nvme_wmb()	__asm__ volatile("mcr p15, 0, %0, c7, c10, 5" :: "r" (0) : "memory")
-#else
-#warning Implement nvme memory barrier for arch!
-#define nvme_wmb()	__asm__ volatile("" ::: "memory")
-#endif
+
+#define nvme_wmb() memory_write_barrier()
 
 
 typedef uint8 __u8;