[Qemu-devel] [PATCH 9/9] tests: acpi: don't read all fields in test_acpi_fadt_table()

[Igor Mammedov <imammedo@redhat.com>]

there is no point to read fields here but not actually
checking them so drop it and read only header + dsdt/facs
addresses since it's needed later to fetch that tables.

With this cleanup we can get rid of AcpiFadtDescriptorRev3/
ACPI_FADT_COMMON_DEF which have no users left.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
 include/hw/acpi/acpi-defs.h | 81 --------------------------------------------
 tests/bios-tables-test.c    | 82 ++++++++++-----------------------------------
 2 files changed, 18 insertions(+), 145 deletions(-)

diff --git a/include/hw/acpi/acpi-defs.h b/include/hw/acpi/acpi-defs.h
index 34e49dc..1f872ee 100644
--- a/include/hw/acpi/acpi-defs.h
+++ b/include/hw/acpi/acpi-defs.h
@@ -75,82 +75,6 @@ struct AcpiTableHeader {
 } QEMU_PACKED;
 typedef struct AcpiTableHeader AcpiTableHeader;
 
-/*
- * ACPI Fixed ACPI Description Table (FADT)
- */
-#define ACPI_FADT_COMMON_DEF /* FADT common definition */ \
-    ACPI_TABLE_HEADER_DEF    /* ACPI common table header */ \
-    uint32_t firmware_ctrl;  /* Physical address of FACS */ \
-    uint32_t dsdt;         /* Physical address of DSDT */ \
-    uint8_t  model;        /* System Interrupt Model */ \
-    uint8_t  reserved1;    /* Reserved */ \
-    uint16_t sci_int;      /* System vector of SCI interrupt */ \
-    uint32_t smi_cmd;      /* Port address of SMI command port */ \
-    uint8_t  acpi_enable;  /* Value to write to smi_cmd to enable ACPI */ \
-    uint8_t  acpi_disable; /* Value to write to smi_cmd to disable ACPI */ \
-    /* Value to write to SMI CMD to enter S4BIOS state */ \
-    uint8_t  S4bios_req; \
-    uint8_t  reserved2;    /* Reserved - must be zero */ \
-    /* Port address of Power Mgt 1a acpi_event Reg Blk */ \
-    uint32_t pm1a_evt_blk; \
-    /* Port address of Power Mgt 1b acpi_event Reg Blk */ \
-    uint32_t pm1b_evt_blk; \
-    uint32_t pm1a_cnt_blk; /* Port address of Power Mgt 1a Control Reg Blk */ \
-    uint32_t pm1b_cnt_blk; /* Port address of Power Mgt 1b Control Reg Blk */ \
-    uint32_t pm2_cnt_blk;  /* Port address of Power Mgt 2 Control Reg Blk */ \
-    uint32_t pm_tmr_blk;   /* Port address of Power Mgt Timer Ctrl Reg Blk */ \
-    /* Port addr of General Purpose acpi_event 0 Reg Blk */ \
-    uint32_t gpe0_blk; \
-    /* Port addr of General Purpose acpi_event 1 Reg Blk */ \
-    uint32_t gpe1_blk; \
-    uint8_t  pm1_evt_len;  /* Byte length of ports at pm1_x_evt_blk */ \
-    uint8_t  pm1_cnt_len;  /* Byte length of ports at pm1_x_cnt_blk */ \
-    uint8_t  pm2_cnt_len;  /* Byte Length of ports at pm2_cnt_blk */ \
-    uint8_t  pm_tmr_len;   /* Byte Length of ports at pm_tm_blk */ \
-    uint8_t  gpe0_blk_len; /* Byte Length of ports at gpe0_blk */ \
-    uint8_t  gpe1_blk_len; /* Byte Length of ports at gpe1_blk */ \
-    uint8_t  gpe1_base;    /* Offset in gpe model where gpe1 events start */ \
-    uint8_t  reserved3;    /* Reserved */ \
-    uint16_t plvl2_lat;    /* Worst case HW latency to enter/exit C2 state */ \
-    uint16_t plvl3_lat;    /* Worst case HW latency to enter/exit C3 state */ \
-    uint16_t flush_size;   /* Size of area read to flush caches */ \
-    uint16_t flush_stride; /* Stride used in flushing caches */ \
-    uint8_t  duty_offset;  /* Bit location of duty cycle field in p_cnt reg */ \
-    uint8_t  duty_width;   /* Bit width of duty cycle field in p_cnt reg */ \
-    uint8_t  day_alrm;     /* Index to day-of-month alarm in RTC CMOS RAM */ \
-    uint8_t  mon_alrm;     /* Index to month-of-year alarm in RTC CMOS RAM */ \
-    uint8_t  century;      /* Index to century in RTC CMOS RAM */ \
-    /* IA-PC Boot Architecture Flags (see below for individual flags) */ \
-    uint16_t boot_flags; \
-    uint8_t reserved;    /* Reserved, must be zero */ \
-    /* Miscellaneous flag bits (see below for individual flags) */ \
-    uint32_t flags; \
-    /* 64-bit address of the Reset register */ \
-    struct AcpiGenericAddress reset_register; \
-    /* Value to write to the reset_register port to reset the system */ \
-    uint8_t reset_value; \
-    /* ARM-Specific Boot Flags (see below for individual flags) (ACPI 5.1) */ \
-    uint16_t arm_boot_flags; \
-    uint8_t minor_revision;  /* FADT Minor Revision (ACPI 5.1) */ \
-    uint64_t x_facs;          /* 64-bit physical address of FACS */ \
-    uint64_t x_dsdt;          /* 64-bit physical address of DSDT */ \
-    /* 64-bit Extended Power Mgt 1a Event Reg Blk address */ \
-    struct AcpiGenericAddress xpm1a_event_block; \
-    /* 64-bit Extended Power Mgt 1b Event Reg Blk address */ \
-    struct AcpiGenericAddress xpm1b_event_block; \
-    /* 64-bit Extended Power Mgt 1a Control Reg Blk address */ \
-    struct AcpiGenericAddress xpm1a_control_block; \
-    /* 64-bit Extended Power Mgt 1b Control Reg Blk address */ \
-    struct AcpiGenericAddress xpm1b_control_block; \
-    /* 64-bit Extended Power Mgt 2 Control Reg Blk address */ \
-    struct AcpiGenericAddress xpm2_control_block; \
-    /* 64-bit Extended Power Mgt Timer Ctrl Reg Blk address */ \
-    struct AcpiGenericAddress xpm_timer_block; \
-    /* 64-bit Extended General Purpose Event 0 Reg Blk address */ \
-    struct AcpiGenericAddress xgpe0_block; \
-    /* 64-bit Extended General Purpose Event 1 Reg Blk address */ \
-    struct AcpiGenericAddress xgpe1_block; \
-
 struct AcpiGenericAddress {
     uint8_t space_id;        /* Address space where struct or register exists */
     uint8_t bit_width;       /* Size in bits of given register */
@@ -160,11 +84,6 @@ struct AcpiGenericAddress {
     uint64_t address;        /* 64-bit address of struct or register */
 } QEMU_PACKED;
 
-struct AcpiFadtDescriptorRev3 {
-    ACPI_FADT_COMMON_DEF
-} QEMU_PACKED;
-typedef struct AcpiFadtDescriptorRev3 AcpiFadtDescriptorRev3;
-
 typedef struct AcpiFadtData {
     struct AcpiGenericAddress pm1_cnt;   /* PM1a_CNT_BLK */
     struct AcpiGenericAddress pm1_evt;   /* PM1a_EVT_BLK */
diff --git a/tests/bios-tables-test.c b/tests/bios-tables-test.c
index 65b271a..cd753ff 100644
--- a/tests/bios-tables-test.c
+++ b/tests/bios-tables-test.c
@@ -29,7 +29,8 @@ typedef struct {
     uint32_t rsdp_addr;
     AcpiRsdpDescriptor rsdp_table;
     AcpiRsdtDescriptorRev1 rsdt_table;
-    AcpiFadtDescriptorRev3 fadt_table;
+    uint32_t dsdt_addr;
+    uint32_t facs_addr;
     AcpiFacsDescriptorRev1 facs_table;
     uint32_t *rsdt_tables_addr;
     int rsdt_tables_nr;
@@ -127,71 +128,18 @@ static void test_acpi_rsdt_table(test_data *data)
     data->rsdt_tables_nr = tables_nr;
 }
 
-static void test_acpi_fadt_table(test_data *data)
+static void fadt_fetch_facs_and_dsdt_ptrs(test_data *data)
 {
-    AcpiFadtDescriptorRev3 *fadt_table = &data->fadt_table;
     uint32_t addr;
+    AcpiTableHeader hdr;
 
     /* FADT table comes first */
     addr = le32_to_cpu(data->rsdt_tables_addr[0]);
-    ACPI_READ_TABLE_HEADER(fadt_table, addr);
-
-    ACPI_READ_FIELD(fadt_table->firmware_ctrl, addr);
-    ACPI_READ_FIELD(fadt_table->dsdt, addr);
-    ACPI_READ_FIELD(fadt_table->model, addr);
-    ACPI_READ_FIELD(fadt_table->reserved1, addr);
-    ACPI_READ_FIELD(fadt_table->sci_int, addr);
-    ACPI_READ_FIELD(fadt_table->smi_cmd, addr);
-    ACPI_READ_FIELD(fadt_table->acpi_enable, addr);
-    ACPI_READ_FIELD(fadt_table->acpi_disable, addr);
-    ACPI_READ_FIELD(fadt_table->S4bios_req, addr);
-    ACPI_READ_FIELD(fadt_table->reserved2, addr);
-    ACPI_READ_FIELD(fadt_table->pm1a_evt_blk, addr);
-    ACPI_READ_FIELD(fadt_table->pm1b_evt_blk, addr);
-    ACPI_READ_FIELD(fadt_table->pm1a_cnt_blk, addr);
-    ACPI_READ_FIELD(fadt_table->pm1b_cnt_blk, addr);
-    ACPI_READ_FIELD(fadt_table->pm2_cnt_blk, addr);
-    ACPI_READ_FIELD(fadt_table->pm_tmr_blk, addr);
-    ACPI_READ_FIELD(fadt_table->gpe0_blk, addr);
-    ACPI_READ_FIELD(fadt_table->gpe1_blk, addr);
-    ACPI_READ_FIELD(fadt_table->pm1_evt_len, addr);
-    ACPI_READ_FIELD(fadt_table->pm1_cnt_len, addr);
-    ACPI_READ_FIELD(fadt_table->pm2_cnt_len, addr);
-    ACPI_READ_FIELD(fadt_table->pm_tmr_len, addr);
-    ACPI_READ_FIELD(fadt_table->gpe0_blk_len, addr);
-    ACPI_READ_FIELD(fadt_table->gpe1_blk_len, addr);
-    ACPI_READ_FIELD(fadt_table->gpe1_base, addr);
-    ACPI_READ_FIELD(fadt_table->reserved3, addr);
-    ACPI_READ_FIELD(fadt_table->plvl2_lat, addr);
-    ACPI_READ_FIELD(fadt_table->plvl3_lat, addr);
-    ACPI_READ_FIELD(fadt_table->flush_size, addr);
-    ACPI_READ_FIELD(fadt_table->flush_stride, addr);
-    ACPI_READ_FIELD(fadt_table->duty_offset, addr);
-    ACPI_READ_FIELD(fadt_table->duty_width, addr);
-    ACPI_READ_FIELD(fadt_table->day_alrm, addr);
-    ACPI_READ_FIELD(fadt_table->mon_alrm, addr);
-    ACPI_READ_FIELD(fadt_table->century, addr);
-    ACPI_READ_FIELD(fadt_table->boot_flags, addr);
-    ACPI_READ_FIELD(fadt_table->reserved, addr);
-    ACPI_READ_FIELD(fadt_table->flags, addr);
-    ACPI_READ_GENERIC_ADDRESS(fadt_table->reset_register, addr);
-    ACPI_READ_FIELD(fadt_table->reset_value, addr);
-    ACPI_READ_FIELD(fadt_table->arm_boot_flags, addr);
-    ACPI_READ_FIELD(fadt_table->minor_revision, addr);
-    ACPI_READ_FIELD(fadt_table->x_facs, addr);
-    ACPI_READ_FIELD(fadt_table->x_dsdt, addr);
-    ACPI_READ_GENERIC_ADDRESS(fadt_table->xpm1a_event_block, addr);
-    ACPI_READ_GENERIC_ADDRESS(fadt_table->xpm1b_event_block, addr);
-    ACPI_READ_GENERIC_ADDRESS(fadt_table->xpm1a_control_block, addr);
-    ACPI_READ_GENERIC_ADDRESS(fadt_table->xpm1b_control_block, addr);
-    ACPI_READ_GENERIC_ADDRESS(fadt_table->xpm2_control_block, addr);
-    ACPI_READ_GENERIC_ADDRESS(fadt_table->xpm_timer_block, addr);
-    ACPI_READ_GENERIC_ADDRESS(fadt_table->xgpe0_block, addr);
-    ACPI_READ_GENERIC_ADDRESS(fadt_table->xgpe1_block, addr);
-
-    ACPI_ASSERT_CMP(fadt_table->signature, "FACP");
-    g_assert(!acpi_calc_checksum((uint8_t *)fadt_table,
-                                 le32_to_cpu(fadt_table->length)));
+    ACPI_READ_TABLE_HEADER(&hdr, addr);
+    ACPI_ASSERT_CMP(hdr.signature, "FACP");
+
+    ACPI_READ_FIELD(data->facs_addr, addr);
+    ACPI_READ_FIELD(data->dsdt_addr, addr);
 }
 
 static void sanitize_fadt_ptrs(test_data *data)
@@ -206,6 +154,12 @@ static void sanitize_fadt_ptrs(test_data *data)
             continue;
         }
 
+        /* check original FADT checksum before sanitizing table */
+        g_assert(!(uint8_t)(
+            acpi_calc_checksum((uint8_t *)sdt, sizeof(AcpiTableHeader)) +
+            acpi_calc_checksum((uint8_t *)sdt->aml, sdt->aml_len)
+        ));
+
         /* sdt->aml field offset := spec offset - header size */
         memset(sdt->aml + 0, 0, 4); /* sanitize FIRMWARE_CTRL(36) ptr */
         memset(sdt->aml + 4, 0, 4); /* sanitize DSDT(40) ptr */
@@ -226,7 +180,7 @@ static void sanitize_fadt_ptrs(test_data *data)
 static void test_acpi_facs_table(test_data *data)
 {
     AcpiFacsDescriptorRev1 *facs_table = &data->facs_table;
-    uint32_t addr = le32_to_cpu(data->fadt_table.firmware_ctrl);
+    uint32_t addr = le32_to_cpu(data->facs_addr);
 
     ACPI_READ_FIELD(facs_table->signature, addr);
     ACPI_READ_FIELD(facs_table->length, addr);
@@ -265,7 +219,7 @@ static void fetch_table(AcpiSdtTable *sdt_table, uint32_t addr)
 static void test_acpi_dsdt_table(test_data *data)
 {
     AcpiSdtTable dsdt_table;
-    uint32_t addr = le32_to_cpu(data->fadt_table.dsdt);
+    uint32_t addr = le32_to_cpu(data->dsdt_addr);
 
     fetch_table(&dsdt_table, addr);
     ACPI_ASSERT_CMP(dsdt_table.header.signature, "DSDT");
@@ -674,7 +628,7 @@ static void test_acpi_one(const char *params, test_data *data)
     test_acpi_rsdp_address(data);
     test_acpi_rsdp_table(data);
     test_acpi_rsdt_table(data);
-    test_acpi_fadt_table(data);
+    fadt_fetch_facs_and_dsdt_ptrs(data);
     test_acpi_facs_table(data);
     test_acpi_dsdt_table(data);
     fetch_rsdt_referenced_tables(data);
-- 
2.7.4