For PCIe device support AER(Advanced Error Reporting), from the
pcie spec 3.0 chapter 6.2.5, ERR_COR, ERR_NONFATAL, and ERR_FATAL
can be forwarded from the secondary interface to the primary interface,
only require the SERR# Enable bit in the Bridge Control register is set.
and at the kernel side, we found only _HPP() method can enable
SERR#, So here we want to turn on this bit.
Signed-off-by: Chen Fan <chen.fan.fnst(a)cn.fujitsu.com>
---
src/fw/pciinit.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/src/fw/pciinit.c b/src/fw/pciinit.c
index 34279a4..28ed1af 100644
--- a/src/fw/pciinit.c
+++ b/src/fw/pciinit.c
@@ -310,6 +310,10 @@ static void pci_bios_init_device(struct pci_device *pci)
/* enable memory mappings */
pci_config_maskw(bdf, PCI_COMMAND, 0,
PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_SERR);
+ /* enable SERR# for forwording */
+ if (pci->header_type & PCI_HEADER_TYPE_BRIDGE)
+ pci_config_maskw(bdf, PCI_BRIDGE_CONTROL, 0,
+ PCI_BRIDGE_CTL_SERR);
}
static void pci_bios_init_devices(void)
--
1.9.3
Instead of allocating the SeaVGABIOS extra stack via a PCIv3 style PMM
call, use the EBDA to store the stack. The stack is placed at the end
of the first 1KiB of the EBDA. Normally this EBDA space is reserved
for the main BIOS, but SeaBIOS doesn't use the space.
This works around an issue with 16bit code running on Windows Vista
(and likely later versions of Windows). The Windows 16bit emulator
can not handle a stack in the e-segment. Using the EBDA, and thus
relocating the stack to the 9-segment, works around the issue.
Reported-by: Richard Laager <rlaager(a)wiktel.com>
Signed-off-by: Kevin O'Connor <kevin(a)koconnor.net>
---
There were several possible ways to resolve the main issue. I'm
leaning torwards the "use the EBDA for the stack" approach, and the
patch below implements that.
-Kevin
---
vgasrc/Kconfig | 18 ++++++++----------
vgasrc/vgaentry.S | 20 +++++++++++++-------
vgasrc/vgainit.c | 56 +++++++------------------------------------------------
3 files changed, 28 insertions(+), 66 deletions(-)
diff --git a/vgasrc/Kconfig b/vgasrc/Kconfig
index 400e8da..bc1ea48 100644
--- a/vgasrc/Kconfig
+++ b/vgasrc/Kconfig
@@ -90,19 +90,17 @@ menu "VGA ROM"
Support emulating text mode features when only a
framebuffer is available.
- config VGA_ALLOCATE_EXTRA_STACK
+ config VGA_EXTRA_STACK
depends on BUILD_VGABIOS
- bool "Allocate an internal stack for 16bit interrupt entry point"
+ bool "Use an extra stack located in the EBDA"
default y
help
- Attempt to allocate (via BIOS PMM call) an internal stack
- for the legacy 16bit 0x10 interrupt entry point. This
- reduces the amount of space on the caller's stack that
- SeaVGABIOS uses.
-
- config VGA_EXTRA_STACK_SIZE
- int
- default 512
+ Use space at the end of the first 1KiB of the EBDA for an
+ internal stack when the legacy 16bit 0x10 interrupt entry
+ point is called. This reduces the amount of space on the
+ caller's stack that SeaVGABIOS uses. Normally the first
+ 1KiB of the EBDA is reserved for the main BIOS, but
+ SeaBIOS does not use this space.
config VGA_VBE
depends on BUILD_VGABIOS
diff --git a/vgasrc/vgaentry.S b/vgasrc/vgaentry.S
index f9cf656..2e4b200 100644
--- a/vgasrc/vgaentry.S
+++ b/vgasrc/vgaentry.S
@@ -104,15 +104,19 @@ entry_10:
ENTRY_ARG_VGA handle_10
iretw
+#define BDA_ebda_seg 0x0e
+
// Entry point using extra stack
DECLFUNC entry_10_extrastack
entry_10_extrastack:
cli
cld
- pushw %ds // Set %ds:%eax to space on ExtraStack
+ pushw %ds // Set %ds:%eax to end of first 1K of EBDA
pushl %eax
- movw %cs:ExtraStackSeg, %ds
- movl $(CONFIG_VGA_EXTRA_STACK_SIZE-PUSHBREGS_size-16), %eax
+ movw $SEG_BDA, %ax
+ movw %ax, %ds
+ movw BDA_ebda_seg, %ds
+ movl $(1024-PUSHBREGS_size-16), %eax
SAVEBREGS_POP_DSEAX // Save registers on extra stack
movl %esp, PUSHBREGS_size+8(%eax)
movw %ss, PUSHBREGS_size+12(%eax)
@@ -145,11 +149,13 @@ entry_timer_hook:
entry_timer_hook_extrastack:
cli
cld
- pushw %ds // Set %ds:%eax to space on ExtraStack
+ pushw %ds // Set %ds:%eax to end of first 1K of EBDA
pushl %eax
- movw %cs:ExtraStackSeg, %ds
- movl $(CONFIG_VGA_EXTRA_STACK_SIZE-PUSHBREGS_size-8), %eax
- SAVEBREGS_POP_DSEAX
+ movw $SEG_BDA, %ax
+ movw %ax, %ds
+ movw BDA_ebda_seg, %ds
+ movl $(1024-PUSHBREGS_size-8), %eax
+ SAVEBREGS_POP_DSEAX // Save registers on extra stack
movl %esp, PUSHBREGS_size(%eax)
movw %ss, PUSHBREGS_size+4(%eax)
diff --git a/vgasrc/vgainit.c b/vgasrc/vgainit.c
index 8d12261..78d5556 100644
--- a/vgasrc/vgainit.c
+++ b/vgasrc/vgainit.c
@@ -43,51 +43,6 @@ struct pci_data rom_pci_data VAR16 VISIBLE16 = {
/****************************************************************
- * PMM call and extra stack setup
- ****************************************************************/
-
-u16 ExtraStackSeg VAR16 VISIBLE16;
-
-static void
-allocate_extra_stack(void)
-{
- if (!CONFIG_VGA_ALLOCATE_EXTRA_STACK)
- return;
- u32 pmmscan;
- for (pmmscan=0; pmmscan < BUILD_BIOS_SIZE; pmmscan+=16) {
- struct pmmheader *pmm = (void*)pmmscan;
- if (GET_FARVAR(SEG_BIOS, pmm->signature) != PMM_SIGNATURE)
- continue;
- if (checksum_far(SEG_BIOS, pmm, GET_FARVAR(SEG_BIOS, pmm->length)))
- continue;
- struct segoff_s entry = GET_FARVAR(SEG_BIOS, pmm->entry);
- dprintf(1, "Attempting to allocate VGA stack via pmm call to %04x:%04x\n"
- , entry.seg, entry.offset);
- u16 res1, res2;
- asm volatile(
- "pushl %0\n"
- "pushw $(8|1)\n" // Permanent low memory request
- "pushl $0xffffffff\n" // Anonymous handle
- "pushl $" __stringify(CONFIG_VGA_EXTRA_STACK_SIZE/16) "\n"
- "pushw $0x00\n" // PMM allocation request
- "lcallw *12(%%esp)\n"
- "addl $16, %%esp\n"
- "cli\n"
- "cld\n"
- : "+r" (entry.segoff), "=a" (res1), "=d" (res2) : : "cc", "memory");
- u32 res = res1 | (res2 << 16);
- if (!res || res == PMM_FUNCTION_NOT_SUPPORTED)
- return;
- dprintf(1, "VGA stack allocated at %x\n", res);
- SET_VGA(ExtraStackSeg, res >> 4);
- extern void entry_10_extrastack(void);
- SET_IVT(0x10, SEGOFF(get_global_seg(), (u32)entry_10_extrastack));
- return;
- }
-}
-
-
-/****************************************************************
* Timer hook
****************************************************************/
@@ -110,7 +65,7 @@ hook_timer_irq(void)
extern void entry_timer_hook_extrastack(void);
struct segoff_s oldirq = GET_IVT(0x08);
struct segoff_s newirq = SEGOFF(get_global_seg(), (u32)entry_timer_hook);
- if (CONFIG_VGA_ALLOCATE_EXTRA_STACK && GET_GLOBAL(ExtraStackSeg))
+ if (CONFIG_VGA_EXTRA_STACK)
newirq = SEGOFF(get_global_seg(), (u32)entry_timer_hook_extrastack);
dprintf(1, "Hooking hardware timer irq (old=%x new=%x)\n"
, oldirq.segoff, newirq.segoff);
@@ -177,10 +132,13 @@ vga_post(struct bregs *regs)
if (CONFIG_VGA_STDVGA_PORTS)
stdvga_build_video_param();
+ // Setup int10 entry point
extern void entry_10(void);
- SET_IVT(0x10, SEGOFF(get_global_seg(), (u32)entry_10));
-
- allocate_extra_stack();
+ extern void entry_10_extrastack(void);
+ struct segoff_s newirq = SEGOFF(get_global_seg(), (u32)entry_10);
+ if (CONFIG_VGA_EXTRA_STACK)
+ newirq = SEGOFF(get_global_seg(), (u32)entry_10_extrastack);
+ SET_IVT(0x10, newirq);
hook_timer_irq();
--
1.9.3
All,
I have a board here that uses an XGI Volari Z9s integrated graphics
device. The board boots under coreboot and loads Linux, but if I add
the appropriate VGA option ROM (extracted from the vendor BIOS) SeaBIOS
hangs:
SeaBIOS (version rel-1.7.5-150-g301dd09-20150126_124858-apollo)
Found mainboard ASUS KFSN4-DRE
Relocating init from 0x000e6fe0 to 0x3ff95800 (size 42816)
Found CBFS header at 0xfffffc80
CPU Mhz=2311
Found 26 PCI devices (max PCI bus is 05)
Copying MPTABLE from 0x3ffe0400/3ffe0410 to 0x000f1550
Copying ACPI RSDP from 0x3ffe1400 to 0x000f1520
Copying SMBIOS entry point from 0x3ffec800 to 0x000f1500
Using pmtimer, ioport 0x2008
Scan for VGA option rom
Running option rom at c000:0003
The Volari graphics initialise and work properly once Linux has booted
and loaded the appropriate device drivers. For now I have been using
SGABIOS for VGA emulation, however I would like to see the native VGA
work on boot.
Any ideas?
Thanks!
--
Timothy Pearson
Raptor Engineering
+1 (415) 727-8645
http://www.raptorengineeringinc.com
On Mon, Jan 26, 2015 at 02:07:41PM -0600, Timothy Pearson wrote:
> On 01/26/2015 01:51 PM, Kevin O'Connor wrote:
> >It will likely be hard to figure out why your vendor vgabios is
> >hanging. It's possible something in seabios is causing it to get
> >confused, but it's also possible something during the coreboot
> >initialization is confusing it.
> >
> >I suggest increasing the SeaBIOS debugging level to 8 and see if it
> >reveals any further information.
>
> Debug level 8:
>
> SeaBIOS (version rel-1.7.5-150-g301dd09-20150126_140432-apollo)
[...]
> Scan for VGA option rom
> Attempting to init PCI bdf 01:04.0 (vd 18ca:0020)
> Copying data 32768@0xfff36278 to 32768@0x000c0000
> Checking rom 0x000c0000 (sig aa55 size 64)
> Running option rom at c000:0003
So, no additional information. You could try increasing the debug
level to 99 just to see if irqs are still on (and if so, to see where
the pc is when irqs are hitting). However, unless you have access to
the vendor vgabios code it's very difficult to guess what's confusing
it.
BTW, did you make sure all of the following are disabled in coreboot:
CONFIG_VGA_ROM_RUN, CONFIG_PCI_ROM_RUN, CONFIG_ON_DEVICE_ROM_RUN
If coreboot supports native vga init for your board, you could try
using seavgabios and skip the vendor vgabios.
Another approach would be to see if you can get get the vga bios to
run in some emulator (such as xorg's x86emu, coreboot's emulator,
qemu, etc) and then try to figure out what's different.
Please keep the mailing list on the CC.
-Kevin
This series depends on:
- [SeaBIOS] [PATCH 0/2] fw/pci: better support for multiple host bridges
(https://www.mail-archive.com/seabios@seabios.org/msg07103.html)
- Not yet final, comments need to be adressed
- [Qemu-devel] [PATCH v2 00/47] ACPI refactoring: replace template patching with C ASL API
(http://lists.gnu.org/archive/html/qemu-devel/2015-01/msg02895.html)
Reasoning:
We need multiple primary busess for a few reasons, the most important one
is to be able to associate a pass-trough device with a guest NUMA node.
The OS-es are able to associate a NUMA node only to a primary bus, not to
a specific PCI device or a pci-2-pci bridge.
PC machines support multiple NUMA nodes for CPUs and memory, however the IO
was not yet supported.
Series status:
The series is fully functional but tested only with Windows2012 server/Fedora 19 and e1000/virtio-net-pci.
You are more than welcome to try using:
-device pxb-device,id=bridge1,bus_nr=4 -device e1000,bus=bridge1,addr=0x1 -bios <patched with the above series>
patch 1 adds the necessary acpi constructs based on Igor's series
patch 2-5 implements acpi code needed to expose the pxb's primary bus to guests
patch 6 separates the pci_bus code into a designated file
patch 7-11 handles the implicit assumptions in code that only one primary bus can exist
patch 12 handles the actual implementation of the PXB devices
patch 13-14 enables the device
patch 15 implements PXB map_irq function, (can be squashed into the actual PXB)
patch 16-17 hacks that need to be addressed before removing the "RFC" status.
Todo:
- Solve the little hacks (patches 16/17)
- Resend the SeaBios series after the comments are addressed
- More testing with other OS-es and other pci devices
- Implement the association of a root bus with a NUMA node (acpi proximity)
- Think of migration implications and missing code (Ideas?)
Any comments will be welcomed and appreciated.
I will not be able to respond next week, but after that
I'll answer to all questions/comments.
Thanks,
Marcel
Marcel Apfelbaum (17):
acpi: added needed acpi constructs
hw/acpi: add support for multiple root busses
hw/apci: add _PRT method for extra root busses
hw/acpi: add _CRS method for extra root busses
hw/acpi: remove from root bus 0 the crs resources used by other busses.
hw/pci: move pci bus related code to separate files
hw/pci: made pci_bus_is_root a PCIBusClass method
hw/pci: made pci_bus_num a PCIBusClass method
hw/pci: introduce TYPE_PCI_MAIN_HOST_BRIDGE interface
hw/pci: removed 'rootbus nr is 0' assumption from qmp_pci_query
hw/pci: implement iteration over multiple host bridges
hw/pci: introduce PCI Expander Bridge (PXB)
hw/pci: inform bios if the system has more than one pci bridge
hw/pci: piix - suport multiple host bridges
hw/pxb: add map_irq func
hw/pci-bridge: hack - disable shpc bar (will be removed from the
series)
hw/acpi: hack - generate dummy region ranges for first acpi-build
(will be removed from the series)
arch_init.c | 1 +
hw/acpi/acpi-build-utils.c | 107 +++++++-
hw/alpha/typhoon.c | 1 +
hw/i386/acpi-build.c | 305 ++++++++++++++++++++-
hw/i386/kvm/pci-assign.c | 1 +
hw/i386/pc.c | 13 +
hw/mips/gt64xxx_pci.c | 1 +
hw/pci-bridge/Makefile.objs | 1 +
hw/pci-bridge/pci_bridge_dev.c | 2 +
hw/pci-bridge/pci_expander_bridge.c | 191 ++++++++++++++
hw/pci-host/bonito.c | 1 +
hw/pci-host/grackle.c | 1 +
hw/pci-host/piix.c | 63 ++++-
hw/pci-host/ppce500.c | 1 +
hw/pci-host/q35.c | 5 +
hw/pci-host/uninorth.c | 1 +
hw/pci/Makefile.objs | 2 +-
hw/pci/pci-hotplug-old.c | 1 +
hw/pci/pci.c | 501 +----------------------------------
hw/pci/pci_bus.c | 510 ++++++++++++++++++++++++++++++++++++
hw/pci/pci_host.c | 6 +
hw/ppc/ppc4xx_pci.c | 1 +
hw/scsi/megasas.c | 1 +
hw/sh4/r2d.c | 1 +
hw/sh4/sh_pci.c | 1 +
hw/vfio/pci.c | 1 +
hw/xen/xen_pt.c | 1 +
include/hw/acpi/acpi-build-utils.h | 12 +
include/hw/pci/pci.h | 6 +-
include/hw/pci/pci_bus.h | 29 ++
include/hw/pci/pci_host.h | 11 +
31 files changed, 1267 insertions(+), 512 deletions(-)
create mode 100644 hw/pci-bridge/pci_expander_bridge.c
create mode 100644 hw/pci/pci_bus.c
--
2.1.0
I've recently upgraded a host from Ubuntu Precise (qemu-kvm-1.0) to
Ubuntu Trusty (qemu 2.0.0). I have a Windows 2008 32-bit OS running on a
64-bit VM that runs a 16-bit line of business application. (While I
realize that "upgrade the application" is the right answer, I can't.)
The Windows VM boots, but the business application crashes on startup.
Changing the VM to be a 32-bit VM doesn't help.
After several hours of compiling and testing intermediate qemu versions,
I accidentally stumbled into the real issue. Trusty has switched from
vgabios to seabios. I have confirmed that switching the vgabios*.bin
images back to the vgabios package (rather than seabios) fixes the
16-bit application in the guest.
Per a suggestion on the Ubuntu bug I filed, I built an updated seabios
package using the source from git (specifically, revision
60e0e55f212dadd043ab9e39bee05a48013ddd8f). It has the same problem.
I then set CONFIG_DEBUG_LEVEL=8 and booted with "-chardev
stdio,id=seabios -device isa-debugcon,iobase=0x402,chardev=seabios" per:
http://www.seabios.org/pipermail/seabios/2011-May/001718.html
The debug log is attached. For more details, including a couple of
screenshots of the NTVDM crash dialog, see:
https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1404396
What's the next step in debugging this?
--
Richard
This series refactors parts of the internal USB driver code interface.
It merges the ?hci_send_bulk() and ?hci_send_control() functions into
one function ?hci_send_pipe(). The control and bulk transmission
functions were similar, but often had slightly different
implementations and quirks. Unifying them reduces the overall code
size. It also makes it easier to issue control commands at run-time,
which should make it easier for future enhancements (such as keyboard
led control).
I tested this on qemu and with a bunch of devices on my c720 and
e350m1. However, I don't have a uhci board readily available. I'll
have to dust off my via board and see if it still works. If others
can run some tests that would be appreciated.
In the process of testing this series, I found that USB3 hubs aren't
working that great - I sometimes get timeout messages on my e350m1
(though all functionality still works), and usb3 hubs aren't working
on my c720. This does not look to be a regression though. (It does
seem that USB3 hubs still need more work though).
This series is also available at:
https://github.com/KevinOConnor/seabios/tree/testing
-Kevin
Kevin O'Connor (9):
ehci: No need to support td array wrapping
ehci: Merge ehci_send_control with ehci_send_bulk
ohci: Merge ohci_send_control with ohci_send_bulk
uhci: Merge uhci_send_control with uhci_send_bulk
xhci: Merge xhci_send_control with xhci_send_bulk
usb: Use usb_send_pipe() now that all drivers have x_send_pipe()
xhci: Move xhci_xfer_x() functions together
xhci: Merge some xhci_xfer_x() functions into xhci_send_pipe()
usb: Control transfers always have an 8 byte command size
src/hw/usb-ehci.c | 123 +++++++++++++++---------------------------
src/hw/usb-ehci.h | 5 +-
src/hw/usb-ohci.c | 87 ++++++++++--------------------
src/hw/usb-ohci.h | 5 +-
src/hw/usb-uhci.c | 96 ++++++++++++---------------------
src/hw/usb-uhci.h | 5 +-
src/hw/usb-xhci.c | 156 +++++++++++++++++-------------------------------------
src/hw/usb-xhci.h | 5 +-
src/hw/usb.c | 40 ++++++--------
src/hw/usb.h | 2 +
10 files changed, 180 insertions(+), 344 deletions(-)
--
1.9.3
