qemu-devel.nongnu.org archive mirror
 help / color / mirror / Atom feed
From: "Philippe Mathieu-Daudé" <philmd@linaro.org>
To: Wei Huang <wei.huang2@amd.com>, qemu-devel@nongnu.org
Cc: "Thomas Huth" <thuth@redhat.com>,
	"Richard Henderson" <richard.henderson@linaro.org>,
	"Ani Sinha" <ani@anisinha.ca>, "Peter Xu" <peterx@redhat.com>,
	"Igor Mammedov" <imammedo@redhat.com>,
	"Michael S. Tsirkin" <mst@redhat.com>,
	"Paolo Bonzini" <pbonzini@redhat.com>,
	"Marcel Apfelbaum" <marcel.apfelbaum@gmail.com>,
	"Eduardo Habkost" <eduardo@habkost.net>,
	"Philippe Mathieu-Daudé" <philmd@linaro.org>
Subject: [PATCH 2/6] hw/i386/amd_iommu: Explicit use of AMDVI_BASE_ADDR in amdvi_init
Date: Mon, 13 Mar 2023 16:30:27 +0100	[thread overview]
Message-ID: <20230313153031.86107-3-philmd@linaro.org> (raw)
In-Reply-To: <20230313153031.86107-1-philmd@linaro.org>

By accessing MemoryRegion internals, amdvi_init() gives the false
idea that the PCI BAR can be modified. However this isn't true
(at least the model isn't ready for that): the device is explicitly
maps at the BAR at the fixed AMDVI_BASE_ADDR address in
amdvi_sysbus_realize(). Since the SysBus API isn't designed to
remap regions, directly use the fixed address in amdvi_init().

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 hw/i386/amd_iommu.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/hw/i386/amd_iommu.c b/hw/i386/amd_iommu.c
index bcd016f5c5..3813b341ec 100644
--- a/hw/i386/amd_iommu.c
+++ b/hw/i386/amd_iommu.c
@@ -1519,9 +1519,9 @@ static void amdvi_init(AMDVIState *s)
     /* reset AMDVI specific capabilities, all r/o */
     pci_set_long(s->pci.dev.config + s->capab_offset, AMDVI_CAPAB_FEATURES);
     pci_set_long(s->pci.dev.config + s->capab_offset + AMDVI_CAPAB_BAR_LOW,
-                 s->mmio.addr & ~(0xffff0000));
+                 AMDVI_BASE_ADDR & ~(0xffff0000));
     pci_set_long(s->pci.dev.config + s->capab_offset + AMDVI_CAPAB_BAR_HIGH,
-                (s->mmio.addr & ~(0xffff)) >> 16);
+                (AMDVI_BASE_ADDR & ~(0xffff)) >> 16);
     pci_set_long(s->pci.dev.config + s->capab_offset + AMDVI_CAPAB_RANGE,
                  0xff000000);
     pci_set_long(s->pci.dev.config + s->capab_offset + AMDVI_CAPAB_MISC, 0);
-- 
2.38.1



  parent reply	other threads:[~2023-03-13 15:32 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-03-13 15:30 [PATCH 0/6] hw/i386/amd_iommu: Orphanize & QDev cleanups Philippe Mathieu-Daudé
2023-03-13 15:30 ` [PATCH 1/6] MAINTAINERS: Mark AMD-Vi emulation as orphan Philippe Mathieu-Daudé
2023-03-13 15:30 ` Philippe Mathieu-Daudé [this message]
2023-03-13 15:30 ` [PATCH 3/6] hw/i386/amd_iommu: Remove intermediate AMDVIState::devid field Philippe Mathieu-Daudé
2023-03-13 15:30 ` [PATCH 4/6] hw/i386/amd_iommu: Move capab_offset from AMDVIState to AMDVIPCIState Philippe Mathieu-Daudé
2023-03-13 15:30 ` [PATCH 5/6] hw/i386/amd_iommu: Set PCI static/const fields via PCIDeviceClass Philippe Mathieu-Daudé
2023-03-13 15:30 ` [PATCH 6/6] hw/i386/amd_iommu: Factor amdvi_pci_realize out of amdvi_sysbus_realize Philippe Mathieu-Daudé
2023-03-13 15:32 ` [PATCH 0/6] hw/i386/amd_iommu: Orphanize & QDev cleanups Philippe Mathieu-Daudé
2025-02-18 16:52   ` Philippe Mathieu-Daudé

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20230313153031.86107-3-philmd@linaro.org \
    --to=philmd@linaro.org \
    --cc=ani@anisinha.ca \
    --cc=eduardo@habkost.net \
    --cc=imammedo@redhat.com \
    --cc=marcel.apfelbaum@gmail.com \
    --cc=mst@redhat.com \
    --cc=pbonzini@redhat.com \
    --cc=peterx@redhat.com \
    --cc=qemu-devel@nongnu.org \
    --cc=richard.henderson@linaro.org \
    --cc=thuth@redhat.com \
    --cc=wei.huang2@amd.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).