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From: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
To: "Philippe Mathieu-Daudé" <f4bug@amsat.org>,
	"Peter Maydell" <peter.maydell@linaro.org>,
	"Eduardo Habkost" <ehabkost@redhat.com>,
	"Michael S. Tsirkin" <mst@redhat.com>
Cc: "Cédric Le Goater" <clg@kaod.org>,
	"QEMU Developers" <qemu-devel@nongnu.org>,
	"Aurelien Jarno" <aurelien@aurel32.net>
Subject: Re: [Qemu-devel] [PATCH 05/15] hw/sh4/sh_pci: Use DeviceState::realize rather than SysBusDevice::init
Date: Tue, 2 Oct 2018 23:37:08 +0300	[thread overview]
Message-ID: <9ce1d491-b1dc-30ac-bf0b-60032b224432@gmail.com> (raw)
In-Reply-To: <b7a53ef4-ee8e-de31-d0c7-2a03ab16aa4b@amsat.org>

Hi Philippe, Peter

On 10/2/18 10:59 PM, Philippe Mathieu-Daudé wrote:
> On 10/2/18 3:13 PM, Peter Maydell wrote:
>> On 1 October 2018 at 23:09, Philippe Mathieu-Daudé <f4bug@amsat.org> wrote:
>>> Move from the legacy SysBusDevice::init method to using DeviceState::realize.
>> Comment says DeviceState::realize but the code is using
>> PCIDevice::realize ?
>>
>> I didn't realize pci devices had their own realize method:
>> what's the difference between it and plain old DeviceState::realize,

PCIDevice:realize handles PCI specific "realization" tasks:
* setup of the PCI configuration space
* PCI BARs configuration
* MSI initalization
*...

The PCIDevice's DeviceState::realize function named 'pci_qdev_realize'
calls PCIDevice:realize after it runs some generic initialization code.

It is possible we have this design so we would be able to move from
"qdev" to QOM.

Thanks,
Marcel

>> which they also have, since PCIDeviceClass inherits from DeviceClass ?
> Cc'ing Michael and Marcel.

  reply	other threads:[~2018-10-02 20:36 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-01 22:09 [Qemu-devel] [PATCH 00/15] another SysBusDevice::init to Device::realize cleanup Philippe Mathieu-Daudé
2018-10-01 22:09 ` [Qemu-devel] [PATCH 01/15] trace-events: Fix copy/paste typo Philippe Mathieu-Daudé
2018-10-02 13:10   ` Peter Maydell
2018-10-02 15:49   ` Cédric Le Goater
2018-10-01 22:09 ` [Qemu-devel] [PATCH 02/15] hw/timer/sun4v-rtc: Convert from DPRINTF() macro to trace events Philippe Mathieu-Daudé
2018-10-02 11:30   ` Artyom Tarasenko
2018-10-02 15:49   ` Cédric Le Goater
2018-10-01 22:09 ` [Qemu-devel] [PATCH 03/15] hw/timer/sun4v-rtc: Use DeviceState::realize rather than SysBusDevice::init Philippe Mathieu-Daudé
2018-10-02  8:38   ` Thomas Huth
2018-10-02 15:49   ` Cédric Le Goater
2018-10-01 22:09 ` [Qemu-devel] [PATCH 04/15] hw/ssi/xilinx_spi: " Philippe Mathieu-Daudé
2018-10-02  8:40   ` Thomas Huth
2018-10-02 15:49   ` Cédric Le Goater
2018-10-04 17:29   ` Alistair Francis
2018-10-01 22:09 ` [Qemu-devel] [PATCH 05/15] hw/sh4/sh_pci: " Philippe Mathieu-Daudé
2018-10-02 13:13   ` Peter Maydell
2018-10-02 19:59     ` Philippe Mathieu-Daudé
2018-10-02 20:37       ` Marcel Apfelbaum [this message]
2018-10-02 20:59         ` Philippe Mathieu-Daudé
2018-10-02 15:49   ` Cédric Le Goater
2018-10-01 22:09 ` [Qemu-devel] [PATCH 06/15] hw/pci-host/bonito: " Philippe Mathieu-Daudé
2018-10-02 21:24   ` Philippe Mathieu-Daudé
2018-10-01 22:09 ` [Qemu-devel] [PATCH 07/15] hw/mips/gt64xxx_pci: Convert gt64120_reset() function into Device reset method Philippe Mathieu-Daudé
2018-10-02 13:15   ` Peter Maydell
2018-10-02 15:49   ` Cédric Le Goater
2018-10-01 22:09 ` [Qemu-devel] [PATCH 08/15] hw/mips/gt64xxx_pci: Mark as bridge device Philippe Mathieu-Daudé
2018-10-02 13:16   ` Peter Maydell
2018-10-02 15:49   ` Cédric Le Goater
2018-10-01 22:09 ` [Qemu-devel] [PATCH 09/15] hw/mips/malta: Replace 'empty_slot' by 'unimplemented_device' Philippe Mathieu-Daudé
2018-10-02 13:23   ` Peter Maydell
2018-10-02 19:40     ` Philippe Mathieu-Daudé
2018-10-03  9:28       ` Peter Maydell
2018-10-01 22:09 ` [Qemu-devel] [PATCH 10/15] hw/sparc64/niagara: " Philippe Mathieu-Daudé
2018-10-02 13:24   ` Peter Maydell
2018-10-02 15:50     ` Artyom Tarasenko
2018-10-01 22:09 ` [Qemu-devel] [PATCH 11/15] hw/sparc/sun4m: " Philippe Mathieu-Daudé
2018-10-02  8:14   ` Artyom Tarasenko
2018-10-02 21:32     ` Philippe Mathieu-Daudé
2018-10-01 22:09 ` [Qemu-devel] [PATCH 12/15] hw/core: Remove the 'empty_slot' device Philippe Mathieu-Daudé
2018-10-01 22:09 ` [Qemu-devel] [RFC PATCH 13/15] hw/alpha/typhoon: Remove unuseful code Philippe Mathieu-Daudé
2018-10-02  8:34   ` Thomas Huth
2018-10-01 22:09 ` [Qemu-devel] [RFC PATCH 14/15] hw/hppa/dino: " Philippe Mathieu-Daudé
2018-10-02  8:35   ` Thomas Huth
2018-10-01 22:09 ` [Qemu-devel] [RFC PATCH 15/15] hw/mips/malta: " Philippe Mathieu-Daudé
2018-10-02  8:36   ` Thomas Huth

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