git: 24a0fef9dc4f - main - bhyve: maintain RSDT and XSDT by basl

From: Corvin Köhne <corvink_at_FreeBSD.org>
Date: Tue, 20 Jun 2023 09:00:59 UTC
The branch main has been updated by corvink:

URL: https://cgit.FreeBSD.org/src/commit/?id=24a0fef9dc4f782174232a3e57d50602a0fbae21

commit 24a0fef9dc4f782174232a3e57d50602a0fbae21
Author:     Corvin Köhne <corvink@FreeBSD.org>
AuthorDate: 2023-06-15 09:12:53 +0000
Commit:     Corvin Köhne <corvink@FreeBSD.org>
CommitDate: 2023-06-20 08:56:23 +0000

    bhyve: maintain RSDT and XSDT by basl
    
    In a subsquent commit the TPM emulation will build it's own TPM2 table.
    This needs to be registered to the RSDT and XSDT. Instead of making the
    rsdt and xsdt variables global, we can simply add a helper to basl.
    
    Reviewed by:            markj
    MFC after:              1 week
    Sponsored by:           Beckhoff Automation GmbH & Co. KG
    Differential Revision:  https://reviews.freebsd.org/D40559
---
 usr.sbin/bhyve/acpi.c | 58 ++++++---------------------------------------------
 usr.sbin/bhyve/basl.c | 54 +++++++++++++++++++++++++++++++++++++++++++++--
 usr.sbin/bhyve/basl.h |  4 +++-
 3 files changed, 61 insertions(+), 55 deletions(-)

diff --git a/usr.sbin/bhyve/acpi.c b/usr.sbin/bhyve/acpi.c
index c8fc65cb3b6e..b89d34263dd5 100644
--- a/usr.sbin/bhyve/acpi.c
+++ b/usr.sbin/bhyve/acpi.c
@@ -91,9 +91,6 @@ static FILE *dsdt_fp;
 static int dsdt_indent_level;
 static int dsdt_error;
 
-static struct basl_table *rsdt;
-static struct basl_table *xsdt;
-
 struct basl_fio {
 	int	fd;
 	FILE	*fp;
@@ -532,10 +529,7 @@ build_fadt(struct vmctx *const ctx)
 	BASL_EXEC(basl_table_add_pointer(table, ACPI_SIG_DSDT,
 	    offsetof(ACPI_TABLE_FADT, XDsdt), sizeof(fadt.XDsdt)));
 
-	BASL_EXEC(basl_table_append_pointer(rsdt, ACPI_SIG_FADT,
-	    ACPI_RSDT_ENTRY_SIZE));
-	BASL_EXEC(basl_table_append_pointer(xsdt, ACPI_SIG_FADT,
-	    ACPI_XSDT_ENTRY_SIZE));
+	BASL_EXEC(basl_table_register_to_rsdt(table));
 
 	return (0);
 }
@@ -557,10 +551,7 @@ build_hpet(struct vmctx *const ctx)
 	hpet.Flags = ACPI_HPET_PAGE_PROTECT4;
 	BASL_EXEC(basl_table_append_content(table, &hpet, sizeof(hpet)));
 
-	BASL_EXEC(basl_table_append_pointer(rsdt, ACPI_SIG_HPET,
-	    ACPI_RSDT_ENTRY_SIZE));
-	BASL_EXEC(basl_table_append_pointer(xsdt, ACPI_SIG_HPET,
-	    ACPI_XSDT_ENTRY_SIZE));
+	BASL_EXEC(basl_table_register_to_rsdt(table));
 
 	return (0);
 }
@@ -635,10 +626,7 @@ build_madt(struct vmctx *const ctx)
 	BASL_EXEC(basl_table_append_bytes(table, &madt_lapic_nmi,
 	    sizeof(madt_lapic_nmi)));
 
-	BASL_EXEC(basl_table_append_pointer(rsdt, ACPI_SIG_MADT,
-	    ACPI_RSDT_ENTRY_SIZE));
-	BASL_EXEC(basl_table_append_pointer(xsdt, ACPI_SIG_MADT,
-	    ACPI_XSDT_ENTRY_SIZE));
+	BASL_EXEC(basl_table_register_to_rsdt(table));
 
 	return (0);
 }
@@ -663,10 +651,7 @@ build_mcfg(struct vmctx *const ctx)
 	BASL_EXEC(basl_table_append_bytes(table, &mcfg_allocation,
 	    sizeof(mcfg_allocation)));
 
-	BASL_EXEC(basl_table_append_pointer(rsdt, ACPI_SIG_MCFG,
-	    ACPI_RSDT_ENTRY_SIZE));
-	BASL_EXEC(basl_table_append_pointer(xsdt, ACPI_SIG_MCFG,
-	    ACPI_XSDT_ENTRY_SIZE));
+	BASL_EXEC(basl_table_register_to_rsdt(table));
 
 	return (0);
 }
@@ -708,19 +693,6 @@ build_rsdp(struct vmctx *const ctx)
 	return (0);
 }
 
-static int
-build_rsdt(struct vmctx *const ctx)
-{
-	BASL_EXEC(
-	    basl_table_create(&rsdt, ctx, ACPI_SIG_RSDT, BASL_TABLE_ALIGNMENT));
-
-	/* Header */
-	BASL_EXEC(basl_table_append_header(rsdt, ACPI_SIG_RSDT, 1, 1));
-	/* Pointers (added by other build_XXX funcs) */
-
-	return (0);
-}
-
 static int
 build_spcr(struct vmctx *const ctx)
 {
@@ -744,23 +716,7 @@ build_spcr(struct vmctx *const ctx)
 	spcr.TerminalType = ACPI_SPCR_TERMINAL_TYPE_VT_UTF8;
 	BASL_EXEC(basl_table_append_content(table, &spcr, sizeof(spcr)));
 
-	BASL_EXEC(basl_table_append_pointer(rsdt, ACPI_SIG_SPCR,
-	    ACPI_RSDT_ENTRY_SIZE));
-	BASL_EXEC(basl_table_append_pointer(xsdt, ACPI_SIG_SPCR,
-	    ACPI_XSDT_ENTRY_SIZE));
-
-	return (0);
-}
-
-static int
-build_xsdt(struct vmctx *const ctx)
-{
-	BASL_EXEC(
-	    basl_table_create(&xsdt, ctx, ACPI_SIG_XSDT, BASL_TABLE_ALIGNMENT));
-
-	/* Header */
-	BASL_EXEC(basl_table_append_header(xsdt, ACPI_SIG_XSDT, 1, 1));
-	/* Pointers (added by other build_XXX funcs) */
+	BASL_EXEC(basl_table_register_to_rsdt(table));
 
 	return (0);
 }
@@ -790,7 +746,7 @@ acpi_build(struct vmctx *ctx, int ncpu)
 	if (getenv("BHYVE_ACPI_KEEPTMPS"))
 		basl_keep_temps = 1;
 
-	BASL_EXEC(basl_init());
+	BASL_EXEC(basl_init(ctx));
 
 	BASL_EXEC(basl_make_templates());
 
@@ -802,8 +758,6 @@ acpi_build(struct vmctx *ctx, int ncpu)
 	 * first table after XSDT.
 	 */
 	BASL_EXEC(build_rsdp(ctx));
-	BASL_EXEC(build_rsdt(ctx));
-	BASL_EXEC(build_xsdt(ctx));
 	BASL_EXEC(build_fadt(ctx));
 	BASL_EXEC(build_madt(ctx));
 	BASL_EXEC(build_hpet(ctx));
diff --git a/usr.sbin/bhyve/basl.c b/usr.sbin/bhyve/basl.c
index 90cb608aecc6..8a4f2c4f311e 100644
--- a/usr.sbin/bhyve/basl.c
+++ b/usr.sbin/bhyve/basl.c
@@ -58,6 +58,8 @@ static STAILQ_HEAD(basl_table_list, basl_table) basl_tables = STAILQ_HEAD_INITIA
     basl_tables);
 
 static struct qemu_loader *basl_loader;
+static struct basl_table *rsdt;
+static struct basl_table *xsdt;
 
 static __inline uint64_t
 basl_le_dec(void *pp, size_t len)
@@ -358,10 +360,41 @@ basl_finish(void)
 	return (0);
 }
 
+static int
+basl_init_rsdt(struct vmctx *const ctx)
+{
+	BASL_EXEC(
+	    basl_table_create(&rsdt, ctx, ACPI_SIG_RSDT, BASL_TABLE_ALIGNMENT));
+
+	/* Header */
+	BASL_EXEC(basl_table_append_header(rsdt, ACPI_SIG_RSDT, 1, 1));
+	/* Pointers (added by basl_table_register_to_rsdt) */
+
+	return (0);
+}
+
+static int
+basl_init_xsdt(struct vmctx *const ctx)
+{
+	BASL_EXEC(
+	    basl_table_create(&xsdt, ctx, ACPI_SIG_XSDT, BASL_TABLE_ALIGNMENT));
+
+	/* Header */
+	BASL_EXEC(basl_table_append_header(xsdt, ACPI_SIG_XSDT, 1, 1));
+	/* Pointers (added by basl_table_register_to_rsdt) */
+
+	return (0);
+}
+
 int
-basl_init(void)
+basl_init(struct vmctx *const ctx)
 {
-	return (qemu_loader_create(&basl_loader, QEMU_FWCFG_FILE_TABLE_LOADER));
+	BASL_EXEC(basl_init_rsdt(ctx));
+	BASL_EXEC(basl_init_xsdt(ctx));
+	BASL_EXEC(
+	    qemu_loader_create(&basl_loader, QEMU_FWCFG_FILE_TABLE_LOADER));
+
+	return (0);
 }
 
 int
@@ -627,3 +660,20 @@ basl_table_create(struct basl_table **const table, struct vmctx *ctx,
 
 	return (0);
 }
+
+int
+basl_table_register_to_rsdt(struct basl_table *table)
+{
+	const ACPI_TABLE_HEADER *header;
+
+	assert(table != NULL);
+
+	header = (const ACPI_TABLE_HEADER *)table->data;
+
+	BASL_EXEC(basl_table_append_pointer(rsdt, header->Signature,
+	    ACPI_RSDT_ENTRY_SIZE));
+	BASL_EXEC(basl_table_append_pointer(xsdt, header->Signature,
+	    ACPI_XSDT_ENTRY_SIZE));
+
+	return (0);
+}
diff --git a/usr.sbin/bhyve/basl.h b/usr.sbin/bhyve/basl.h
index e12173b701a2..62502be22e13 100644
--- a/usr.sbin/bhyve/basl.h
+++ b/usr.sbin/bhyve/basl.h
@@ -67,7 +67,7 @@ void basl_fill_gas(ACPI_GENERIC_ADDRESS *gas, uint8_t space_id,
     uint8_t bit_width, uint8_t bit_offset, uint8_t access_width,
     uint64_t address);
 int basl_finish(void);
-int basl_init(void);
+int basl_init(struct vmctx *ctx);
 int basl_table_add_checksum(struct basl_table *const table, const uint32_t off,
     const uint32_t start, const uint32_t len);
 int basl_table_add_length(struct basl_table *const table, const uint32_t off,
@@ -97,3 +97,5 @@ int basl_table_append_pointer(struct basl_table *table,
     const uint8_t src_signature[ACPI_NAMESEG_SIZE], uint8_t size);
 int basl_table_create(struct basl_table **table, struct vmctx *ctx,
     const uint8_t *name, uint32_t alignment);
+/* Adds the table to RSDT and XSDT */
+int basl_table_register_to_rsdt(struct basl_table *table);