On Sun, Mar 08, 2015 at 05:22:43PM +0200, Marcel Apfelbaum wrote:
On 03/08/2015 04:47 PM, Michael S. Tsirkin wrote:
On Sun, Mar 08, 2015 at 01:04:07PM +0200, Marcel Apfelbaum wrote:
On 03/08/2015 12:46 PM, Michael S. Tsirkin wrote:
On Thu, Mar 05, 2015 at 04:55:08PM +0200, Marcel Apfelbaum wrote:
Signed-off-by: Marcel Apfelbaum marcel@redhat.com
some ideas for cleaning this up. there's more here btw.
hw/i386/acpi-build.c | 78 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+)
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index e5709e8..f0401d2 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -664,6 +664,83 @@ static void build_append_pci_bus_devices(Aml *parent_scope, PCIBus *bus, aml_append(parent_scope, method); }
+static Aml *build_prt(void) +{
- Aml *method, *pkg, *if_ctx, *while_ctx;
- method = aml_method("_PRT", 0);
- aml_append(method, aml_store(aml_package(128), aml_local(0)));
- aml_append(method, aml_store(aml_int(0), aml_local(1)));
- while_ctx = aml_while(aml_lless(aml_local(1), aml_int(128)));
- {
aml_append(while_ctx,aml_store(aml_shiftright(aml_local(1), aml_int(2)), aml_local(2)));aml_append(while_ctx,aml_store(aml_and(aml_add(aml_local(1), aml_local(2)), aml_int(3)),aml_local(3)));As an example, you can have
Aml *i = aml_local(1); Aml *mask = aml_local(2);
Hi Michael,
Thank you for the tip, the implementation is ready and I'll submit it right away.
So, one thing that's problematic here is that expected files need to be examined manually.
Only if pxb-device is added, otherwise they remain the same. So by default, make check remains unchanged.
How about a three-stage approach:
- move _PRT out from DSDT - e.g. to a separate ssdt, update expected files. One way to do this is to first revert commit 4ec8d2b3f54dd1dcd9e2a80e529feff4e2603288 Author: Igor Mammedov imammedo@redhat.com pc: acpi-build: drop remaining ssdt_misc template
- rewrite the new SSDT in C, produce an otherwise identical code. make check will catch errors
- reuse code from (2) for extra roots.
I am aware of this and I was planning to do that on top of this series. Four reasons for this:
- As stated before, it does not affect make check because this code affects the ACPI table only if pxb-device is present.
- The _PRT is not *exactly* the same, bus 0's _PRT has an extra "if" for the power-management device than needs needs SCI
- The series is already big, I prefer attacking this as a new enhancement: "Dynamically create bus 0 _PRT"
- QEMU 2.3 is approaching, I don't want o diverge now
Thanks, Marcel
Meanwhile 2.3 will have two almost identical copies of _PRT? I don't think that's a good idea.
BTW, I found a bug in aml_equal implementation during re-testing, so it was worth it!
Thanks, Marcel
if_ctx = aml_if(aml_equal(aml_local(3), aml_int(0)));{pkg = aml_package(4);Make pkg local here?
aml_append(pkg, aml_int(0));aml_append(pkg, aml_int(0));aml_append(pkg, aml_name("LNKD"));aml_append(pkg, aml_int(0));aml_append(if_ctx, aml_store(pkg, aml_local(4)));}aml_append(while_ctx, if_ctx);if_ctx = aml_if(aml_equal(aml_local(3), aml_int(1)));{pkg = aml_package(4);aml_append(pkg, aml_int(0));aml_append(pkg, aml_int(0));aml_append(pkg, aml_name("LNKA"));aml_append(pkg, aml_int(0));aml_append(if_ctx, aml_store(pkg, aml_local(4)));}aml_append(while_ctx, if_ctx);if_ctx = aml_if(aml_equal(aml_local(3), aml_int(2)));{pkg = aml_package(4);aml_append(pkg, aml_int(0));aml_append(pkg, aml_int(0));aml_append(pkg, aml_name("LNKB"));aml_append(pkg, aml_int(0));aml_append(if_ctx, aml_store(pkg, aml_local(4)));}aml_append(while_ctx, if_ctx);if_ctx = aml_if(aml_equal(aml_local(3), aml_int(3)));{pkg = aml_package(4);aml_append(pkg, aml_int(0));aml_append(pkg, aml_int(0));aml_append(pkg, aml_name("LNKC"));aml_append(pkg, aml_int(0));aml_append(if_ctx, aml_store(pkg, aml_local(4)));}aml_append(while_ctx, if_ctx);aml_append(while_ctx,aml_store(aml_or(aml_shiftleft(aml_local(2), aml_int(16)),aml_int(0xFFFF)),aml_index(aml_local(4), aml_int(0))));aml_append(while_ctx,aml_store(aml_and(aml_local(1), aml_int(3)),aml_index(aml_local(4), aml_int(1))));aml_append(while_ctx,aml_store(aml_local(4), aml_index(aml_local(0), aml_local(1))));aml_append(while_ctx, aml_increment(aml_local(1)));- }
- aml_append(method, while_ctx);
- aml_append(method, aml_return(aml_local(0)));
- return method;
+}
static void build_ssdt(GArray *table_data, GArray *linker, AcpiCpuInfo *cpu, AcpiPmInfo *pm, AcpiMiscInfo *misc, @@ -708,6 +785,7 @@ build_ssdt(GArray *table_data, GArray *linker, aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A03"))); aml_append(dev, aml_name_decl("_BBN", aml_int((uint8_t)bus_info->bus)));
aml_append(dev, build_prt()); aml_append(scope, dev); aml_append(ssdt, scope); }-- 2.1.0