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Re: [Qemu-devel] [PATCH v2 1/8] i.MX: Standardize i.MX serial debug.
From: |
Peter Crosthwaite |
Subject: |
Re: [Qemu-devel] [PATCH v2 1/8] i.MX: Standardize i.MX serial debug. |
Date: |
Thu, 22 Oct 2015 15:09:39 -0700 |
On Wed, Oct 21, 2015 at 2:35 PM, Jean-Christophe Dubois
<address@hidden> wrote:
> The goal is to have debug code always compiled during build.
>
> We standardize all debug output on the following format:
>
> [QOM_TYPE_NAME]reporting_function: debug message
>
> We also replace IPRINTF with qemu_log_mask(). The qemu_log_mask() output
> is following the same format as the above debug.
>
> Signed-off-by: Jean-Christophe Dubois <address@hidden>
> ---
>
> Changes since v1:
> * use HWADDR_PRIx for address formating
> * standardize qemu_log_mask on same model.
>
> hw/char/imx_serial.c | 57
> ++++++++++++++++++++++++++--------------------------
> 1 file changed, 29 insertions(+), 28 deletions(-)
>
> diff --git a/hw/char/imx_serial.c b/hw/char/imx_serial.c
> index f0c4c72..73e8eb3 100644
> --- a/hw/char/imx_serial.c
> +++ b/hw/char/imx_serial.c
> @@ -22,25 +22,17 @@
> #include "sysemu/sysemu.h"
> #include "sysemu/char.h"
>
> -//#define DEBUG_SERIAL 1
> -#ifdef DEBUG_SERIAL
> -#define DPRINTF(fmt, args...) \
> -do { printf("%s: " fmt , TYPE_IMX_SERIAL, ##args); } while (0)
> -#else
> -#define DPRINTF(fmt, args...) do {} while (0)
> +#ifndef DEBUG_IMX_UART
> +#define DEBUG_IMX_UART 0
> #endif
>
> -/*
> - * Define to 1 for messages about attempts to
> - * access unimplemented registers or similar.
> - */
> -//#define DEBUG_IMPLEMENTATION 1
> -#ifdef DEBUG_IMPLEMENTATION
> -# define IPRINTF(fmt, args...) \
> - do { fprintf(stderr, "%s: " fmt, TYPE_IMX_SERIAL, ##args); } while (0)
> -#else
> -# define IPRINTF(fmt, args...) do {} while (0)
> -#endif
> +#define DPRINTF(fmt, args...) \
> + do { \
> + if (DEBUG_IMX_UART) { \
> + fprintf(stderr, "[%s]%s: " fmt , TYPE_IMX_SERIAL, \
> + __func__, ##args); \
> + } \
> + } while (0)
>
> static const VMStateDescription vmstate_imx_serial = {
> .name = TYPE_IMX_SERIAL,
> @@ -113,10 +105,12 @@ static uint64_t imx_serial_read(void *opaque, hwaddr
> offset,
> unsigned size)
> {
> IMXSerialState *s = (IMXSerialState *)opaque;
> + uint32_t reg = offset >> 2;
Why the new variable? If anything, your change seems to have obsoleted
the need for a reg variable as you reduce the usage-count of (offset
>> 2) to just one (in the switch) where it vould stay inline as in
original code. Unless I am missing something?
With just that change (reverting)
Reviewed-by: Peter Crosthwaite <address@hidden>
Regards,
Peter
> uint32_t c;
>
> - DPRINTF("read(offset=%x)\n", offset >> 2);
> - switch (offset >> 2) {
> + DPRINTF("read(offset=0x%" HWADDR_PRIx ")\n", offset);
> +
> + switch (reg) {
> case 0x0: /* URXD */
> c = s->readbuff;
> if (!(s->uts1 & UTS1_RXEMPTY)) {
> @@ -167,7 +161,8 @@ static uint64_t imx_serial_read(void *opaque, hwaddr
> offset,
> return 0x0; /* TODO */
>
> default:
> - IPRINTF("%s: bad offset: 0x%x\n", __func__, (int)offset);
> + qemu_log_mask(LOG_GUEST_ERROR, "[%s]%s: Bad register at offset 0x%"
> + HWADDR_PRIx "\n", TYPE_IMX_SERIAL, __func__, offset);
> return 0;
> }
> }
> @@ -176,13 +171,13 @@ static void imx_serial_write(void *opaque, hwaddr
> offset,
> uint64_t value, unsigned size)
> {
> IMXSerialState *s = (IMXSerialState *)opaque;
> + uint32_t reg = offset >> 2;
> unsigned char ch;
>
> - DPRINTF("write(offset=%x, value = %x) to %s\n",
> - offset >> 2,
> - (unsigned int)value, s->chr ? s->chr->label : "NODEV");
> + DPRINTF("write(offset=0x%" HWADDR_PRIx ", value = 0x%x) to %s\n",
> + offset, (unsigned int)value, s->chr ? s->chr->label : "NODEV");
>
> - switch (offset >> 2) {
> + switch (reg) {
> case 0x10: /* UTXD */
> ch = value;
> if (s->ucr2 & UCR2_TXEN) {
> @@ -198,7 +193,9 @@ static void imx_serial_write(void *opaque, hwaddr offset,
>
> case 0x20: /* UCR1 */
> s->ucr1 = value & 0xffff;
> +
> DPRINTF("write(ucr1=%x)\n", (unsigned int)value);
> +
> imx_update(s);
> break;
>
> @@ -266,12 +263,14 @@ static void imx_serial_write(void *opaque, hwaddr
> offset,
>
> case 0x2d: /* UTS1 */
> case 0x23: /* UCR4 */
> - IPRINTF("Unimplemented Register %x written to\n", offset >> 2);
> + qemu_log_mask(LOG_UNIMP, "[%s]%s: Unimplemented reg %d\n",
> + TYPE_IMX_SERIAL, __func__, reg);
> /* TODO */
> break;
>
> default:
> - IPRINTF("%s: Bad offset 0x%x\n", __func__, (int)offset);
> + qemu_log_mask(LOG_GUEST_ERROR, "[%s]%s: Bad register at offset 0x%"
> + HWADDR_PRIx "\n", TYPE_IMX_SERIAL, __func__, offset);
> }
> }
>
> @@ -284,7 +283,9 @@ static int imx_can_receive(void *opaque)
> static void imx_put_data(void *opaque, uint32_t value)
> {
> IMXSerialState *s = (IMXSerialState *)opaque;
> +
> DPRINTF("received char\n");
> +
> s->usr1 |= USR1_RRDY;
> s->usr2 |= USR2_RDR;
> s->uts1 &= ~UTS1_RXEMPTY;
> @@ -319,8 +320,8 @@ static void imx_serial_realize(DeviceState *dev, Error
> **errp)
> qemu_chr_add_handlers(s->chr, imx_can_receive, imx_receive,
> imx_event, s);
> } else {
> - DPRINTF("No char dev for uart at 0x%lx\n",
> - (unsigned long)s->iomem.ram_addr);
> + DPRINTF("No char dev for uart at 0x%" HWADDR_PRIx "\n",
> + s->iomem.ram_addr);
> }
> }
>
> --
> 2.1.4
>
- [Qemu-devel] [PATCH v2 0/8] i.MX: Standardize debug code, Jean-Christophe Dubois, 2015/10/21
- [Qemu-devel] [PATCH v2 1/8] i.MX: Standardize i.MX serial debug., Jean-Christophe Dubois, 2015/10/21
- Re: [Qemu-devel] [PATCH v2 1/8] i.MX: Standardize i.MX serial debug.,
Peter Crosthwaite <=
- [Qemu-devel] [PATCH v2 2/8] i.MX: Standardize i.MX GPIO debug, Jean-Christophe Dubois, 2015/10/21
- [Qemu-devel] [PATCH v2 3/8] i.MX: Standardize i.MX I2C debug, Jean-Christophe Dubois, 2015/10/21
- [Qemu-devel] [PATCH v2 4/8] i.MX: Standardize i.MX AVIC debug, Jean-Christophe Dubois, 2015/10/21
- [Qemu-devel] [PATCH v2 5/8] i.MX: Standardize i.MX CCM debug, Jean-Christophe Dubois, 2015/10/21
- [Qemu-devel] [PATCH v2 7/8] i.MX: Standardize i.MX EPIT debug, Jean-Christophe Dubois, 2015/10/21
- [Qemu-devel] [PATCH v2 8/8] i.MX: Standardize i.MX GPT debug, Jean-Christophe Dubois, 2015/10/21
- [Qemu-devel] [PATCH v2 6/8] i.MX: Standardize i.MX FEC debug, Jean-Christophe Dubois, 2015/10/21