[Qemu-devel] Re: [PATCH] moving eeprom initialization

[Wen Congyang <wency@cn.fujitsu.com>]

At 03/07/2011 05:27 AM, William Dauchy Write:
> The initialization should not be only on reset but also when initializing
> the device.
> It resolves a bug when hot plugging a pci network device: the mac address
> was always null.
> 
> Signed-off-by: William Dauchy <wdauchy@gmail.com>
> Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>

Thanks for merging AMD fix.
This patch works fine to me.

> ---
>  hw/pcnet.c   |   59 +++++++++++++++++++++++++++++----------------------------
>  hw/rtl8139.c |   23 ++++++++++-----------
>  2 files changed, 41 insertions(+), 41 deletions(-)
> 
> diff --git a/hw/pcnet.c b/hw/pcnet.c
> index 6dfdcc4..d3d5661 100644
> --- a/hw/pcnet.c
> +++ b/hw/pcnet.c
> @@ -1557,35 +1557,6 @@ uint32_t pcnet_bcr_readw(PCNetState *s, uint32_t rap)
>  void pcnet_h_reset(void *opaque)
>  {
>      PCNetState *s = opaque;
> -    int i;
> -    uint16_t checksum;
> -
> -    /* Initialize the PROM */
> -
> -    /*
> -      Datasheet: http://pdfdata.datasheetsite.com/web/24528/AM79C970A.pdf
> -      page 95
> -    */
> -    memcpy(s->prom, s->conf.macaddr.a, 6);
> -    /* Reserved Location: must be 00h */
> -    s->prom[6] = s->prom[7] = 0x00;
> -    /* Reserved Location: must be 00h */
> -    s->prom[8] = 0x00;
> -    /* Hardware ID: must be 11h if compatibility to AMD drivers is desired */
> -    s->prom[9] = 0x11;
> -    /* User programmable space, init with 0 */
> -    s->prom[10] = s->prom[11] = 0x00;
> -    /* LSByte of two-byte checksum, which is the sum of bytes 00h-0Bh
> -       and bytes 0Eh and 0Fh, must therefore be initialized with 0! */
> -    s->prom[12] = s->prom[13] = 0x00;
> -    /* Must be ASCII W (57h) if compatibility to AMD
> -       driver software is desired */
> -    s->prom[14] = s->prom[15] = 0x57;
> -
> -    for (i = 0,checksum = 0; i < 16; i++)
> -        checksum += s->prom[i];
> -    *(uint16_t *)&s->prom[12] = cpu_to_le16(checksum);
> -
>  
>      s->bcr[BCR_MSRDA] = 0x0005;
>      s->bcr[BCR_MSWRA] = 0x0005;
> @@ -1752,6 +1723,9 @@ void pcnet_common_cleanup(PCNetState *d)
>  
>  int pcnet_common_init(DeviceState *dev, PCNetState *s, NetClientInfo *info)
>  {
> +    int i;
> +    uint16_t checksum;
> +
>      s->poll_timer = qemu_new_timer(vm_clock, pcnet_poll_timer, s);
>  
>      qemu_macaddr_default_if_unset(&s->conf.macaddr);
> @@ -1760,5 +1734,32 @@ int pcnet_common_init(DeviceState *dev, PCNetState *s, NetClientInfo *info)
>  
>      add_boot_device_path(s->conf.bootindex, dev, "/ethernet-phy@0");
>  
> +    /* Initialize the PROM */
> +
> +    /*
> +      Datasheet: http://pdfdata.datasheetsite.com/web/24528/AM79C970A.pdf
> +      page 95
> +    */
> +    memcpy(s->prom, s->conf.macaddr.a, 6);
> +    /* Reserved Location: must be 00h */
> +    s->prom[6] = s->prom[7] = 0x00;
> +    /* Reserved Location: must be 00h */
> +    s->prom[8] = 0x00;
> +    /* Hardware ID: must be 11h if compatibility to AMD drivers is desired */
> +    s->prom[9] = 0x11;
> +    /* User programmable space, init with 0 */
> +    s->prom[10] = s->prom[11] = 0x00;
> +    /* LSByte of two-byte checksum, which is the sum of bytes 00h-0Bh
> +       and bytes 0Eh and 0Fh, must therefore be initialized with 0! */
> +    s->prom[12] = s->prom[13] = 0x00;
> +    /* Must be ASCII W (57h) if compatibility to AMD
> +       driver software is desired */
> +    s->prom[14] = s->prom[15] = 0x57;
> +
> +    for (i = 0, checksum = 0; i < 16; i++) {
> +        checksum += s->prom[i];
> +    }
> +    *(uint16_t *)&s->prom[12] = cpu_to_le16(checksum);
> +
>      return 0;
>  }
> diff --git a/hw/rtl8139.c b/hw/rtl8139.c
> index a22530c..7a87522 100644
> --- a/hw/rtl8139.c
> +++ b/hw/rtl8139.c
> @@ -1189,18 +1189,6 @@ static void rtl8139_reset(DeviceState *d)
>  
>      rtl8139_update_irq(s);
>  
> -    /* prepare eeprom */
> -    s->eeprom.contents[0] = 0x8129;
> -#if 1
> -    // PCI vendor and device ID should be mirrored here
> -    s->eeprom.contents[1] = PCI_VENDOR_ID_REALTEK;
> -    s->eeprom.contents[2] = PCI_DEVICE_ID_REALTEK_8139;
> -#endif
> -
> -    s->eeprom.contents[7] = s->conf.macaddr.a[0] | s->conf.macaddr.a[1] << 8;
> -    s->eeprom.contents[8] = s->conf.macaddr.a[2] | s->conf.macaddr.a[3] << 8;
> -    s->eeprom.contents[9] = s->conf.macaddr.a[4] | s->conf.macaddr.a[5] << 8;
> -
>      /* mark all status registers as owned by host */
>      for (i = 0; i < 4; ++i)
>      {
> @@ -3392,6 +3380,17 @@ static int pci_rtl8139_init(PCIDevice *dev)
>  
>      qemu_macaddr_default_if_unset(&s->conf.macaddr);
>  
> +    /* prepare eeprom */
> +    s->eeprom.contents[0] = 0x8129;
> +#if 1
> +    /* PCI vendor and device ID should be mirrored here */
> +    s->eeprom.contents[1] = PCI_VENDOR_ID_REALTEK;
> +    s->eeprom.contents[2] = PCI_DEVICE_ID_REALTEK_8139;
> +#endif
> +    s->eeprom.contents[7] = s->conf.macaddr.a[0] | s->conf.macaddr.a[1] << 8;
> +    s->eeprom.contents[8] = s->conf.macaddr.a[2] | s->conf.macaddr.a[3] << 8;
> +    s->eeprom.contents[9] = s->conf.macaddr.a[4] | s->conf.macaddr.a[5] << 8;
> +
>      s->nic = qemu_new_nic(&net_rtl8139_info, &s->conf,
>                            dev->qdev.info->name, dev->qdev.id, s);
>      qemu_format_nic_info_str(&s->nic->nc, s->conf.macaddr.a);