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Re: [PATCH v2 3/8] hw/ide/piix: Convert reset handler to DeviceReset


From: Li Qiang
Subject: Re: [PATCH v2 3/8] hw/ide/piix: Convert reset handler to DeviceReset
Date: Wed, 9 Oct 2019 09:08:18 +0800



Philippe Mathieu-Daudé <address@hidden> 于2019年10月8日周二 下午10:32写道:
The PIIX3/IDE is a PCI device within the PIIX3 chipset, it will be reset
when the PCI bus it stands on is reset.

Convert its reset handler into a proper Device reset method.

Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
---
 hw/ide/piix.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/hw/ide/piix.c b/hw/ide/piix.c
index fba6bc8bff..18b2c3b722 100644
--- a/hw/ide/piix.c
+++ b/hw/ide/piix.c
@@ -30,7 +30,6 @@
 #include "sysemu/block-backend.h"
 #include "sysemu/blockdev.h"
 #include "sysemu/dma.h"
-#include "sysemu/reset.h"

 #include "hw/ide/pci.h"
 #include "trace.h"
@@ -103,9 +102,9 @@ static void bmdma_setup_bar(PCIIDEState *d)
     }
 }

-static void piix3_reset(void *opaque)
+static void piix3_ide_reset(DeviceState *dev)
 {
-    PCIIDEState *d = opaque;
+    PCIIDEState *d = PCI_IDE(dev);
     PCIDevice *pd = PCI_DEVICE(d);
     uint8_t *pci_conf = pd->config;
     int i;
@@ -154,8 +153,6 @@ static void pci_piix_ide_realize(PCIDevice *dev, Error **errp)

     pci_conf[PCI_CLASS_PROG] = 0x80; // legacy ATA mode

-    qemu_register_reset(piix3_reset, d);
-
     bmdma_setup_bar(d);
     pci_register_bar(dev, 4, PCI_BASE_ADDRESS_SPACE_IO, &d->bmdma_bar);

@@ -247,6 +244,7 @@ static void piix3_ide_class_init(ObjectClass *klass, void *data)
     DeviceClass *dc = DEVICE_CLASS(klass);
     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);

+    dc->reset = piix3_ide_reset;
     k->realize = pci_piix_ide_realize;
     k->exit = pci_piix_ide_exitfn;
     k->vendor_id = PCI_VENDOR_ID_INTEL;
--


Shouldn't we also add the reset callback for piix4 ide device?

Thanks,
Li Qiang

 
2.21.0



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