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pcihp: move PCI _DSM function 0 prolog into separate function

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it will be reused by follow up patches that will implement
static _DSM for non-hotpluggable devices.

no functional AML change, only context one, where 'cap' (Local1)
initialization is moved after UUID/revision checks.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20230302161543.286002-15-imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Igor Mammedov 2023-03-02 17:15:23 +01:00 committed by Michael S. Tsirkin
parent bd95cd5323
commit 0a4584fca3
1 changed files with 30 additions and 24 deletions
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54
hw/i386/acpi-build.c
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@ -373,6 +373,33 @@ Aml *aml_pci_device_dsm(void)
return method; return method;
} }
static void build_append_pci_dsm_func0_common(Aml *ctx, Aml *retvar)
{
Aml *UUID, *ifctx1;
uint8_t byte_list[1] = { 0 }; /* nothing supported yet */
aml_append(ctx, aml_store(aml_buffer(1, byte_list), retvar));
/*
* PCI Firmware Specification 3.1
* 4.6. _DSM Definitions for PCI
*/
UUID = aml_touuid("E5C937D0-3553-4D7A-9117-EA4D19C3434D");
ifctx1 = aml_if(aml_lnot(aml_equal(aml_arg(0), UUID)));
{
/* call is for unsupported UUID, bail out */
aml_append(ifctx1, aml_return(retvar));
}
aml_append(ctx, ifctx1);
ifctx1 = aml_if(aml_lless(aml_arg(1), aml_int(2)));
{
/* call is for unsupported REV, bail out */
aml_append(ifctx1, aml_return(retvar));
}
aml_append(ctx, ifctx1);
}
static void build_append_pcihp_notify_entry(Aml *method, int slot) static void build_append_pcihp_notify_entry(Aml *method, int slot)
{ {
Aml *if_ctx; Aml *if_ctx;
@ -570,14 +597,13 @@ static bool build_append_notfication_callback(Aml *parent_scope,
static Aml *aml_pci_pdsm(void) static Aml *aml_pci_pdsm(void)
{ {
Aml *method, *UUID, *ifctx, *ifctx1; Aml *method, *ifctx, *ifctx1;
Aml *ret = aml_local(0); Aml *ret = aml_local(0);
Aml *caps = aml_local(1); Aml *caps = aml_local(1);
Aml *acpi_index = aml_local(2); Aml *acpi_index = aml_local(2);
Aml *zero = aml_int(0); Aml *zero = aml_int(0);
Aml *one = aml_int(1); Aml *one = aml_int(1);
Aml *func = aml_arg(2); Aml *func = aml_arg(2);
Aml *rev = aml_arg(1);
Aml *params = aml_arg(4); Aml *params = aml_arg(4);
Aml *bnum = aml_derefof(aml_index(params, aml_int(0))); Aml *bnum = aml_derefof(aml_index(params, aml_int(0)));
Aml *sunum = aml_derefof(aml_index(params, aml_int(1))); Aml *sunum = aml_derefof(aml_index(params, aml_int(1)));
@ -587,29 +613,9 @@ static Aml *aml_pci_pdsm(void)
/* get supported functions */ /* get supported functions */
ifctx = aml_if(aml_equal(func, zero)); ifctx = aml_if(aml_equal(func, zero));
{ {
uint8_t byte_list[1] = { 0 }; /* nothing supported yet */ build_append_pci_dsm_func0_common(ifctx, ret);
aml_append(ifctx, aml_store(aml_buffer(1, byte_list), ret));
aml_append(ifctx, aml_store(zero, caps)); aml_append(ifctx, aml_store(zero, caps));
/*
* PCI Firmware Specification 3.1
* 4.6. _DSM Definitions for PCI
*/
UUID = aml_touuid("E5C937D0-3553-4D7A-9117-EA4D19C3434D");
ifctx1 = aml_if(aml_lnot(aml_equal(aml_arg(0), UUID)));
{
/* call is for unsupported UUID, bail out */
aml_append(ifctx1, aml_return(ret));
}
aml_append(ifctx, ifctx1);
ifctx1 = aml_if(aml_lless(rev, aml_int(2)));
{
/* call is for unsupported REV, bail out */
aml_append(ifctx1, aml_return(ret));
}
aml_append(ifctx, ifctx1);
aml_append(ifctx, aml_append(ifctx,
aml_store(aml_call2("AIDX", bnum, sunum), acpi_index)); aml_store(aml_call2("AIDX", bnum, sunum), acpi_index));
/* /*