diff mbox series

[v3,2/3] edu: mmio: allow 64-bit access in read dispatch

Message ID 20190422141156.15746-3-liq3ea@163.com (mailing list archive)
State New, archived
Headers show
Series hw: edu: some fixes | expand

Commit Message

Li Qiang April 22, 2019, 2:11 p.m. UTC 
The edu spec says when address >= 0x80, the MMIO area can
be accessed by 64-bit.

Signed-off-by: Li Qiang <liq3ea@163.com>
---
Change since v2:
Fix an error per Phillippe's advice

 hw/misc/edu.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

Comments

Philippe Mathieu-Daudé April 22, 2019, 4:29 p.m. UTC | #1 
On 4/22/19 4:11 PM, Li Qiang wrote:
> The edu spec says when address >= 0x80, the MMIO area can
> be accessed by 64-bit.
> 
> Signed-off-by: Li Qiang <liq3ea@163.com>

Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>

> ---
> Change since v2:
> Fix an error per Phillippe's advice
> 
>  hw/misc/edu.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/hw/misc/edu.c b/hw/misc/edu.c
> index 65fc32b928..33de05141f 100644
> --- a/hw/misc/edu.c
> +++ b/hw/misc/edu.c
> @@ -185,7 +185,11 @@ static uint64_t edu_mmio_read(void *opaque, hwaddr addr, unsigned size)
>      EduState *edu = opaque;
>      uint64_t val = ~0ULL;
>  
> -    if (size != 4) {
> +    if (addr < 0x80 && size != 4) {
> +        return val;
> +    }
> +
> +    if (addr >= 0x80 && size != 4 && size != 8) {
>          return val;
>      }
>  
>
Jiri Slaby May 3, 2019, 9:12 a.m. UTC | #2 
On 22. 04. 19, 16:11, Li Qiang wrote:
> The edu spec says when address >= 0x80, the MMIO area can
> be accessed by 64-bit.
> 
> Signed-off-by: Li Qiang <liq3ea@163.com>
> ---
> Change since v2:
> Fix an error per Phillippe's advice
> 
>  hw/misc/edu.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/hw/misc/edu.c b/hw/misc/edu.c
> index 65fc32b928..33de05141f 100644
> --- a/hw/misc/edu.c
> +++ b/hw/misc/edu.c
> @@ -185,7 +185,11 @@ static uint64_t edu_mmio_read(void *opaque, hwaddr addr, unsigned size)
>      EduState *edu = opaque;
>      uint64_t val = ~0ULL;
>  
> -    if (size != 4) {
> +    if (addr < 0x80 && size != 4) {
> +        return val;
> +    }
> +
> +    if (addr >= 0x80 && size != 4 && size != 8) {
>          return val;
>      }

Good catch, thanks.
diff mbox series

Patch

diff --git a/hw/misc/edu.c b/hw/misc/edu.c
index 65fc32b928..33de05141f 100644
--- a/hw/misc/edu.c
+++ b/hw/misc/edu.c
@@ -185,7 +185,11 @@  static uint64_t edu_mmio_read(void *opaque, hwaddr addr, unsigned size)
     EduState *edu = opaque;
     uint64_t val = ~0ULL;
 
-    if (size != 4) {
+    if (addr < 0x80 && size != 4) {
+        return val;
+    }
+
+    if (addr >= 0x80 && size != 4 && size != 8) {
         return val;
     }