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X-Received-From: 2a00:1450:4864:20::441 Subject: [Qemu-devel] [PATCH v2 1/3] lsi53c895a: hide 53c895a registers in 53c810 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Fam Zheng , Paolo Bonzini , Artyom Tarasenko Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" AIX/PReP does access to the aliased IO registers of 53810. Implement aliasing to make the AIX driver work. Signed-off-by: Artyom Tarasenko --- hw/scsi/lsi53c895a.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) diff --git a/hw/scsi/lsi53c895a.c b/hw/scsi/lsi53c895a.c index da7239d..6b95699 100644 --- a/hw/scsi/lsi53c895a.c +++ b/hw/scsi/lsi53c895a.c @@ -2271,6 +2271,9 @@ static void lsi_scsi_realize(PCIDevice *dev, Error **= errp) LSIState *s =3D LSI53C895A(dev); DeviceState *d =3D DEVICE(dev); uint8_t *pci_conf; + uint64_t mmio_size; + MemoryRegion *mr; + uint16_t type =3D PCI_DEVICE_GET_CLASS(dev)->device_id; =20 pci_conf =3D dev->config; =20 @@ -2279,13 +2282,21 @@ static void lsi_scsi_realize(PCIDevice *dev, Error = **errp) /* Interrupt pin A */ pci_conf[PCI_INTERRUPT_PIN] =3D 0x01; =20 - memory_region_init_io(&s->mmio_io, OBJECT(s), &lsi_mmio_ops, s, - "lsi-mmio", 0x400); memory_region_init_io(&s->ram_io, OBJECT(s), &lsi_ram_ops, s, "lsi-ram", 0x2000); memory_region_init_io(&s->io_io, OBJECT(s), &lsi_io_ops, s, "lsi-io", 256); - + if (type =3D=3D PCI_DEVICE_ID_LSI_53C895A) { + mmio_size =3D 0x400; + } else { + mr =3D g_new(MemoryRegion, 1); + memory_region_init_alias(mr, OBJECT(d), "lsi-io-alias", &s->io_io, + 0, 0x80); + memory_region_add_subregion_overlap(&s->io_io, 0x80, mr, -1); + mmio_size =3D 0x80; + } + memory_region_init_io(&s->mmio_io, OBJECT(s), &lsi_mmio_ops, s, + "lsi-mmio", mmio_size); address_space_init(&s->pci_io_as, pci_address_space_io(dev), "lsi-pci-= io"); qdev_init_gpio_out(d, &s->ext_irq, 1); =20 --=20 2.7.2