|
 |
6e7d01 |
From f38f51d422e82d1241b678960dd6a033ffa398da Mon Sep 17 00:00:00 2001
|
|
|
6e7d01 |
From: Jon Maloy <jmaloy@redhat.com>
|
|
|
6e7d01 |
Date: Wed, 21 Apr 2021 22:30:05 -0400
|
|
|
6e7d01 |
Subject: [PATCH 6/7] xhci: fix valid.max_access_size to access address
|
|
|
6e7d01 |
registers
|
|
|
6e7d01 |
MIME-Version: 1.0
|
|
|
6e7d01 |
Content-Type: text/plain; charset=UTF-8
|
|
|
6e7d01 |
Content-Transfer-Encoding: 8bit
|
|
|
6e7d01 |
|
|
|
6e7d01 |
RH-Author: Jon Maloy <jmaloy@redhat.com>
|
|
|
6e7d01 |
Message-id: <20210421223006.19650-6-jmaloy@redhat.com>
|
|
|
6e7d01 |
Patchwork-id: 101483
|
|
|
6e7d01 |
O-Subject: [RHEL-8.5.0 qemu-kvm PATCH v2 5/6] xhci: fix valid.max_access_size to access address registers
|
|
|
6e7d01 |
Bugzilla: 1842478
|
|
|
6e7d01 |
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
|
|
|
6e7d01 |
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
|
|
|
6e7d01 |
RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
|
|
|
6e7d01 |
|
|
|
6e7d01 |
From: Laurent Vivier <lvivier@redhat.com>
|
|
|
6e7d01 |
|
|
|
6e7d01 |
QEMU XHCI advertises AC64 (64-bit addressing) but doesn't allow
|
|
|
6e7d01 |
64-bit mode access in "runtime" and "operational" MemoryRegionOps.
|
|
|
6e7d01 |
|
|
|
6e7d01 |
Set the max_access_size based on sizeof(dma_addr_t) as AC64 is set.
|
|
|
6e7d01 |
|
|
|
6e7d01 |
XHCI specs:
|
|
|
6e7d01 |
"If the xHC supports 64-bit addressing (AC64 = ‘1’), then software
|
|
|
6e7d01 |
should write 64-bit registers using only Qword accesses. If a
|
|
|
6e7d01 |
system is incapable of issuing Qword accesses, then writes to the
|
|
|
6e7d01 |
64-bit address fields shall be performed using 2 Dword accesses;
|
|
|
6e7d01 |
low Dword-first, high-Dword second. If the xHC supports 32-bit
|
|
|
6e7d01 |
addressing (AC64 = ‘0’), then the high Dword of registers containing
|
|
|
6e7d01 |
64-bit address fields are unused and software should write addresses
|
|
|
6e7d01 |
using only Dword accesses"
|
|
|
6e7d01 |
|
|
|
6e7d01 |
The problem has been detected with SLOF, as linux kernel always accesses
|
|
|
6e7d01 |
registers using 32-bit access even if AC64 is set and revealed by
|
|
|
6e7d01 |
5d971f9e6725 ("memory: Revert "memory: accept mismatching sizes in memory_region_access_valid"")
|
|
|
6e7d01 |
|
|
|
6e7d01 |
Suggested-by: Alexey Kardashevskiy <aik@au1.ibm.com>
|
|
|
6e7d01 |
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
|
|
|
6e7d01 |
Message-id: 20200721083322.90651-1-lvivier@redhat.com
|
|
|
6e7d01 |
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
|
|
|
6e7d01 |
|
|
|
6e7d01 |
(cherry picked from commit 8e67fda2dd6202ccec093fda561107ba14830a17)
|
|
|
6e7d01 |
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
|
|
|
6e7d01 |
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
|
|
|
6e7d01 |
---
|
|
|
6e7d01 |
hw/usb/hcd-xhci.c | 4 ++--
|
|
|
6e7d01 |
1 file changed, 2 insertions(+), 2 deletions(-)
|
|
|
6e7d01 |
|
|
|
6e7d01 |
diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c
|
|
|
6e7d01 |
index 646c78cde9..ab449bb003 100644
|
|
|
6e7d01 |
--- a/hw/usb/hcd-xhci.c
|
|
|
6e7d01 |
+++ b/hw/usb/hcd-xhci.c
|
|
|
6e7d01 |
@@ -3183,7 +3183,7 @@ static const MemoryRegionOps xhci_oper_ops = {
|
|
|
6e7d01 |
.read = xhci_oper_read,
|
|
|
6e7d01 |
.write = xhci_oper_write,
|
|
|
6e7d01 |
.valid.min_access_size = 4,
|
|
|
6e7d01 |
- .valid.max_access_size = 4,
|
|
|
6e7d01 |
+ .valid.max_access_size = sizeof(dma_addr_t),
|
|
|
6e7d01 |
.endianness = DEVICE_LITTLE_ENDIAN,
|
|
|
6e7d01 |
};
|
|
|
6e7d01 |
|
|
|
6e7d01 |
@@ -3199,7 +3199,7 @@ static const MemoryRegionOps xhci_runtime_ops = {
|
|
|
6e7d01 |
.read = xhci_runtime_read,
|
|
|
6e7d01 |
.write = xhci_runtime_write,
|
|
|
6e7d01 |
.valid.min_access_size = 4,
|
|
|
6e7d01 |
- .valid.max_access_size = 4,
|
|
|
6e7d01 |
+ .valid.max_access_size = sizeof(dma_addr_t),
|
|
|
6e7d01 |
.endianness = DEVICE_LITTLE_ENDIAN,
|
|
|
6e7d01 |
};
|
|
|
6e7d01 |
|
|
|
6e7d01 |
--
|
|
|
6e7d01 |
2.27.0
|
|
|
6e7d01 |
|