[Qemu-devel] [PATCH v2] net: cadence_gem: fix compilation error when debug is on

[Qemu-devel] [PATCH v2] net: cadence_gem: fix compilation error when debug is on

[Ramon Fried]

defining CADENCE_GEM_ERR_DEBUG causes compilation
errors, fix that.

Signed-off-by: Ramon Fried <rfried.dev@gmail.com>
---
v2: change %lx to HWADDR_PRIx and %lx to %zdx

 hw/net/cadence_gem.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/hw/net/cadence_gem.c b/hw/net/cadence_gem.c
index 7f63411430..e9b1b1e2eb 100644
--- a/hw/net/cadence_gem.c
+++ b/hw/net/cadence_gem.c
@@ -982,8 +982,8 @@ static ssize_t gem_receive(NetClientState *nc, const uint8_t *buf, size_t size)
             return -1;
         }
 
-        DB_PRINT("copy %d bytes to 0x%x\n", MIN(bytes_to_copy, rxbufsize),
-                rx_desc_get_buffer(s->rx_desc[q]));
+        DB_PRINT("copy %d bytes to 0x%" HWADDR_PRIx "\n", MIN(bytes_to_copy, rxbufsize),
+                rx_desc_get_buffer(s, s->rx_desc[q]));
 
         /* Copy packet data to emulated DMA buffer */
         address_space_write(&s->dma_as, rx_desc_get_buffer(s, s->rx_desc[q]) +
@@ -1156,7 +1156,7 @@ static void gem_transmit(CadenceGEMState *s)
             if (tx_desc_get_length(desc) > sizeof(tx_packet) -
                                                (p - tx_packet)) {
                 DB_PRINT("TX descriptor @ 0x%x too large: size 0x%x space " \
-                         "0x%x\n", (unsigned)packet_desc_addr,
+                         "0x%zdx\n", (unsigned)packet_desc_addr,
                          (unsigned)tx_desc_get_length(desc),
                          sizeof(tx_packet) - (p - tx_packet));
                 break;
-- 
2.21.0

Re: [Qemu-devel] [PATCH v2] net: cadence_gem: fix compilation error when debug is on

[Laurent Vivier]

Le 11/06/2019 à 16:55, Ramon Fried a écrit :
> defining CADENCE_GEM_ERR_DEBUG causes compilation
> errors, fix that.
> 
> Signed-off-by: Ramon Fried <rfried.dev@gmail.com>
> ---
> v2: change %lx to HWADDR_PRIx and %lx to %zdx

HWADDR_PRIx is to use with hwaddr type (packet_desc_addr).
rx_desc_get_buffer() is uint64_t, you must use PRIx64.
It may be better to remove also the cast to unsigned.

Thanks,
Laurent
> 
>  hw/net/cadence_gem.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/hw/net/cadence_gem.c b/hw/net/cadence_gem.c
> index 7f63411430..e9b1b1e2eb 100644
> --- a/hw/net/cadence_gem.c
> +++ b/hw/net/cadence_gem.c
> @@ -982,8 +982,8 @@ static ssize_t gem_receive(NetClientState *nc, const uint8_t *buf, size_t size)
>              return -1;
>          }
>  
> -        DB_PRINT("copy %d bytes to 0x%x\n", MIN(bytes_to_copy, rxbufsize),
> -                rx_desc_get_buffer(s->rx_desc[q]));
> +        DB_PRINT("copy %d bytes to 0x%" HWADDR_PRIx "\n", MIN(bytes_to_copy, rxbufsize),
> +                rx_desc_get_buffer(s, s->rx_desc[q]));
>  
>          /* Copy packet data to emulated DMA buffer */
>          address_space_write(&s->dma_as, rx_desc_get_buffer(s, s->rx_desc[q]) +
> @@ -1156,7 +1156,7 @@ static void gem_transmit(CadenceGEMState *s)
>              if (tx_desc_get_length(desc) > sizeof(tx_packet) -
>                                                 (p - tx_packet)) {
>                  DB_PRINT("TX descriptor @ 0x%x too large: size 0x%x space " \
> -                         "0x%x\n", (unsigned)packet_desc_addr,
> +                         "0x%zdx\n", (unsigned)packet_desc_addr,
>                           (unsigned)tx_desc_get_length(desc),
>                           sizeof(tx_packet) - (p - tx_packet));
>                  break;
> 

Re: [Qemu-devel] [PATCH v2] net: cadence_gem: fix compilation error when debug is on

[Ramon Fried]

On Tue, Jun 11, 2019 at 7:21 PM Laurent Vivier <laurent@vivier.eu> wrote:

> Le 11/06/2019 à 16:55, Ramon Fried a écrit :
> > defining CADENCE_GEM_ERR_DEBUG causes compilation
> > errors, fix that.
> >
> > Signed-off-by: Ramon Fried <rfried.dev@gmail.com>
> > ---
> > v2: change %lx to HWADDR_PRIx and %lx to %zdx
>
> HWADDR_PRIx is to use with hwaddr type (packet_desc_addr).
> rx_desc_get_buffer() is uint64_t, you must use PRIx64.
> It may be better to remove also the cast to unsigned.
>
Other places in the code also use HWADDR_PRIx with  rx_desc_get_buffer().
Should I change them also ?

>
> Thanks,
> Laurent
> >
> >  hw/net/cadence_gem.c | 6 +++---
> >  1 file changed, 3 insertions(+), 3 deletions(-)
> >
> > diff --git a/hw/net/cadence_gem.c b/hw/net/cadence_gem.c
> > index 7f63411430..e9b1b1e2eb 100644
> > --- a/hw/net/cadence_gem.c
> > +++ b/hw/net/cadence_gem.c
> > @@ -982,8 +982,8 @@ static ssize_t gem_receive(NetClientState *nc, const
> uint8_t *buf, size_t size)
> >              return -1;
> >          }
> >
> > -        DB_PRINT("copy %d bytes to 0x%x\n", MIN(bytes_to_copy,
> rxbufsize),
> > -                rx_desc_get_buffer(s->rx_desc[q]));
> > +        DB_PRINT("copy %d bytes to 0x%" HWADDR_PRIx "\n",
> MIN(bytes_to_copy, rxbufsize),
> > +                rx_desc_get_buffer(s, s->rx_desc[q]));
> >
> >          /* Copy packet data to emulated DMA buffer */
> >          address_space_write(&s->dma_as, rx_desc_get_buffer(s,
> s->rx_desc[q]) +
> > @@ -1156,7 +1156,7 @@ static void gem_transmit(CadenceGEMState *s)
> >              if (tx_desc_get_length(desc) > sizeof(tx_packet) -
> >                                                 (p - tx_packet)) {
> >                  DB_PRINT("TX descriptor @ 0x%x too large: size 0x%x
> space " \
> > -                         "0x%x\n", (unsigned)packet_desc_addr,
> > +                         "0x%zdx\n", (unsigned)packet_desc_addr,
> >                           (unsigned)tx_desc_get_length(desc),
> >                           sizeof(tx_packet) - (p - tx_packet));
> >                  break;
> >
>
>

Re: [Qemu-devel] [PATCH v2] net: cadence_gem: fix compilation error when debug is on

[Laurent Vivier]

Le 12/06/2019 à 06:27, Ramon Fried a écrit :
> 
> 
> On Tue, Jun 11, 2019 at 7:21 PM Laurent Vivier <laurent@vivier.eu
> <mailto:laurent@vivier.eu>> wrote:
> 
>     Le 11/06/2019 à 16:55, Ramon Fried a écrit :
>     > defining CADENCE_GEM_ERR_DEBUG causes compilation
>     > errors, fix that.
>     >
>     > Signed-off-by: Ramon Fried <rfried.dev@gmail.com
>     <mailto:rfried.dev@gmail.com>>
>     > ---
>     > v2: change %lx to HWADDR_PRIx and %lx to %zdx
> 
>     HWADDR_PRIx is to use with hwaddr type (packet_desc_addr).
>     rx_desc_get_buffer() is uint64_t, you must use PRIx64.
>     It may be better to remove also the cast to unsigned.
> 
> Other places in the code also use HWADDR_PRIx with  rx_desc_get_buffer().
> Should I change them also ?

No, in fact you should change the return type of rx_desc_get_buffer() to
hwaddr.

Thanks,
Laurent

Re: [Qemu-devel] [PATCH v2] net: cadence_gem: fix compilation error when debug is on

[Philippe Mathieu-Daudé]

On 6/11/19 4:55 PM, Ramon Fried wrote:
> defining CADENCE_GEM_ERR_DEBUG causes compilation
> errors, fix that.
> 
> Signed-off-by: Ramon Fried <rfried.dev@gmail.com>
> ---
> v2: change %lx to HWADDR_PRIx and %lx to %zdx
> 
>  hw/net/cadence_gem.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/hw/net/cadence_gem.c b/hw/net/cadence_gem.c
> index 7f63411430..e9b1b1e2eb 100644
> --- a/hw/net/cadence_gem.c
> +++ b/hw/net/cadence_gem.c
> @@ -982,8 +982,8 @@ static ssize_t gem_receive(NetClientState *nc, const uint8_t *buf, size_t size)
>              return -1;
>          }
>  
> -        DB_PRINT("copy %d bytes to 0x%x\n", MIN(bytes_to_copy, rxbufsize),
> -                rx_desc_get_buffer(s->rx_desc[q]));
> +        DB_PRINT("copy %d bytes to 0x%" HWADDR_PRIx "\n", MIN(bytes_to_copy, rxbufsize),
> +                rx_desc_get_buffer(s, s->rx_desc[q]));
>  
>          /* Copy packet data to emulated DMA buffer */
>          address_space_write(&s->dma_as, rx_desc_get_buffer(s, s->rx_desc[q]) +
> @@ -1156,7 +1156,7 @@ static void gem_transmit(CadenceGEMState *s)
>              if (tx_desc_get_length(desc) > sizeof(tx_packet) -
>                                                 (p - tx_packet)) {
>                  DB_PRINT("TX descriptor @ 0x%x too large: size 0x%x space " \
> -                         "0x%x\n", (unsigned)packet_desc_addr,
> +                         "0x%zdx\n", (unsigned)packet_desc_addr,

The format is either "zd" or "zx". I misunderstood how you want to print
it, if you want hexadecimal, it should be "zx" then.

>                           (unsigned)tx_desc_get_length(desc),
>                           sizeof(tx_packet) - (p - tx_packet));
>                  break;
> 

Re: [Qemu-devel] [Qemu-arm] [PATCH v2] net: cadence_gem: fix compilation error when debug is on

[Alex Bennée]

Ramon Fried <rfried.dev@gmail.com> writes:

> defining CADENCE_GEM_ERR_DEBUG causes compilation
> errors, fix that.

It would be worth doing something like:

#ifdef CADENCE_GEM_ERR_DEBUG
#define CADENCE_GEM_GATE 1
#else
#define CADENCE_GEM_GATE 0
#endif

#define DB_PRINT(...) do { \
    if (CADENCE_GEM_GATE) { \
        fprintf(stderr,  ": %s: ", __func__); \
        fprintf(stderr, ## __VA_ARGS__); \
    } \
} while (0)

So these format strings don't go stale in and only get detected on
--debug builds.

While your at it I suspect the fprintf debug would be better of as:

  qemu_log("%s: " fmt, __func__, ## args);


>
> Signed-off-by: Ramon Fried <rfried.dev@gmail.com>
> ---
> v2: change %lx to HWADDR_PRIx and %lx to %zdx
>
>  hw/net/cadence_gem.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/hw/net/cadence_gem.c b/hw/net/cadence_gem.c
> index 7f63411430..e9b1b1e2eb 100644
> --- a/hw/net/cadence_gem.c
> +++ b/hw/net/cadence_gem.c
> @@ -982,8 +982,8 @@ static ssize_t gem_receive(NetClientState *nc, const uint8_t *buf, size_t size)
>              return -1;
>          }
>
> -        DB_PRINT("copy %d bytes to 0x%x\n", MIN(bytes_to_copy, rxbufsize),
> -                rx_desc_get_buffer(s->rx_desc[q]));
> +        DB_PRINT("copy %d bytes to 0x%" HWADDR_PRIx "\n", MIN(bytes_to_copy, rxbufsize),
> +                rx_desc_get_buffer(s, s->rx_desc[q]));
>
>          /* Copy packet data to emulated DMA buffer */
>          address_space_write(&s->dma_as, rx_desc_get_buffer(s, s->rx_desc[q]) +
> @@ -1156,7 +1156,7 @@ static void gem_transmit(CadenceGEMState *s)
>              if (tx_desc_get_length(desc) > sizeof(tx_packet) -
>                                                 (p - tx_packet)) {
>                  DB_PRINT("TX descriptor @ 0x%x too large: size 0x%x space " \
> -                         "0x%x\n", (unsigned)packet_desc_addr,
> +                         "0x%zdx\n", (unsigned)packet_desc_addr,
>                           (unsigned)tx_desc_get_length(desc),
>                           sizeof(tx_packet) - (p - tx_packet));
>                  break;


--
Alex Bennée

Re: [Qemu-devel] [Qemu-arm] [PATCH v2] net: cadence_gem: fix compilation error when debug is on

[Eric Blake]

[-- Attachment #1.1: Type: text/plain, Size: 1048 bytes --]

On 6/12/19 1:03 PM, Alex Bennée wrote:
> 
> Ramon Fried <rfried.dev@gmail.com> writes:
> 
>> defining CADENCE_GEM_ERR_DEBUG causes compilation
>> errors, fix that.
> 
> It would be worth doing something like:
> 
> #ifdef CADENCE_GEM_ERR_DEBUG
> #define CADENCE_GEM_GATE 1
> #else
> #define CADENCE_GEM_GATE 0
> #endif
> 
> #define DB_PRINT(...) do { \
>     if (CADENCE_GEM_GATE) { \
>         fprintf(stderr,  ": %s: ", __func__); \
>         fprintf(stderr, ## __VA_ARGS__); \
>     } \
> } while (0)
> 
> So these format strings don't go stale in and only get detected on
> --debug builds.
> 
> While your at it I suspect the fprintf debug would be better of as:
> 
>   qemu_log("%s: " fmt, __func__, ## args);

Indeed, or even see if it is worth converting to full-on trace points
for dynamic control of whether to catch these things without having to
recompile debug on or off.

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3226
Virtualization:  qemu.org | libvirt.org


[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 488 bytes --]

Re: [Qemu-devel] [PATCH v2] net: cadence_gem: fix compilation error when debug is on

[Ramon Fried]

On Wed, Jun 12, 2019 at 10:40 AM Laurent Vivier <laurent@vivier.eu> wrote:

> Le 12/06/2019 à 06:27, Ramon Fried a écrit :
> >
> >
> > On Tue, Jun 11, 2019 at 7:21 PM Laurent Vivier <laurent@vivier.eu
> > <mailto:laurent@vivier.eu>> wrote:
> >
> >     Le 11/06/2019 à 16:55, Ramon Fried a écrit :
> >     > defining CADENCE_GEM_ERR_DEBUG causes compilation
> >     > errors, fix that.
> >     >
> >     > Signed-off-by: Ramon Fried <rfried.dev@gmail.com
> >     <mailto:rfried.dev@gmail.com>>
> >     > ---
> >     > v2: change %lx to HWADDR_PRIx and %lx to %zdx
> >
> >     HWADDR_PRIx is to use with hwaddr type (packet_desc_addr).
> >     rx_desc_get_buffer() is uint64_t, you must use PRIx64.
> >     It may be better to remove also the cast to unsigned.
> >
> > Other places in the code also use HWADDR_PRIx with  rx_desc_get_buffer().
> > Should I change them also ?
>
> No, in fact you should change the return type of rx_desc_get_buffer() to
> hwaddr.
>
Make sense.
I'll do it in a different patch.

>
> Thanks,
> Laurent
>