Commit 5d7a334f authored by Igor Mammedov's avatar Igor Mammedov Committed by Michael S. Tsirkin
Browse files

pc: acpi: use build_append_foo() API to construct FADT 



build_append_foo() API doesn't need explicit endianness
conversions which eliminates a source of errors and
it makes build_fadt() look like declarative definition of
FADT table in ACPI spec, which makes it easy to review.
Also it allows easily extending FADT to support other
revisions which will be used by follow up patches
where build_fadt() will be reused for ARM target.

Signed-off-by: default avatarIgor Mammedov <imammedo@redhat.com>
Reviewed-by: default avatarEric Auger <eric.auger@redhat.com>
Tested-by: default avatarEric Auger <eric.auger@redhat.com>
Reviewed-by: default avatarMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
parent 937d1b58

hw/i386/acpi-build.c

+84 −62
Original line number Diff line number Diff line
@@ -298,84 +298,106 @@ build_facs(GArray *table_data, BIOSLinker *linker) 
    facs->length = cpu_to_le32(sizeof(*facs));

}



/* Load chipset information in FADT */

static void fadt_setup(AcpiFadtDescriptorRev3 *fadt, AcpiFadtData f)

{

    fadt->model = f.int_model;

    fadt->reserved1 = 0;

    fadt->sci_int = cpu_to_le16(f.sci_int);

    fadt->smi_cmd = cpu_to_le32(f.smi_cmd);

    fadt->acpi_enable = f.acpi_enable_cmd;

    fadt->acpi_disable = f.acpi_disable_cmd;

    /* EVT, CNT, TMR offset matches hw/acpi/core.c */

    fadt->pm1a_evt_blk = cpu_to_le32(f.pm1a_evt.address);

    fadt->pm1a_cnt_blk = cpu_to_le32(f.pm1a_cnt.address);

    fadt->pm_tmr_blk = cpu_to_le32(f.pm_tmr.address);

    fadt->gpe0_blk = cpu_to_le32(f.gpe0_blk.address);

    /* EVT, CNT, TMR length matches hw/acpi/core.c */

    fadt->pm1_evt_len = f.pm1a_evt.bit_width / 8;

    fadt->pm1_cnt_len = f.pm1a_cnt.bit_width / 8;

    fadt->pm_tmr_len = f.pm_tmr.bit_width / 8;

    fadt->gpe0_blk_len = f.gpe0_blk.bit_width / 8;

    fadt->plvl2_lat = cpu_to_le16(f.plvl2_lat);

    fadt->plvl3_lat = cpu_to_le16(f.plvl3_lat);

    fadt->flags = cpu_to_le32(f.flags);

    fadt->century = f.rtc_century;

    if (f.rev == 1) {

        return;

    }



    fadt->reset_value = f.reset_val;

    fadt->reset_register = f.reset_reg;

    fadt->reset_register.address = cpu_to_le64(f.reset_reg.address);



    fadt->xpm1a_event_block = f.pm1a_evt;

    fadt->xpm1a_event_block.address = cpu_to_le64(f.pm1a_evt.address);



    fadt->xpm1a_control_block = f.pm1a_cnt;

    fadt->xpm1a_control_block.address = cpu_to_le64(f.pm1a_cnt.address);



    fadt->xpm_timer_block = f.pm_tmr;

    fadt->xpm_timer_block.address = cpu_to_le64(f.pm_tmr.address);



    fadt->xgpe0_block = f.gpe0_blk;

    fadt->xgpe0_block.address = cpu_to_le64(f.gpe0_blk.address);

}





/* FADT */

static void

build_fadt(GArray *table_data, BIOSLinker *linker, AcpiFadtData *f,

build_fadt(GArray *tbl, BIOSLinker *linker, AcpiFadtData *f,

           const char *oem_id, const char *oem_table_id)

{

    AcpiFadtDescriptorRev3 *fadt = acpi_data_push(table_data, sizeof(*fadt));

    unsigned fw_ctrl_offset = (char *)&fadt->firmware_ctrl - table_data->data;

    unsigned dsdt_entry_offset = (char *)&fadt->dsdt - table_data->data;

    unsigned xdsdt_entry_offset = (char *)&fadt->x_dsdt - table_data->data;

    int fadt_size = sizeof(*fadt);

    int off;

    int fadt_start = tbl->len;



    /* FACS address to be filled by Guest linker */

    acpi_data_push(tbl, sizeof(AcpiTableHeader));



    /* FACS address to be filled by Guest linker at runtime */

    off = tbl->len;

    build_append_int_noprefix(tbl, 0, 4); /* FIRMWARE_CTRL */

    bios_linker_loader_add_pointer(linker,

        ACPI_BUILD_TABLE_FILE, fw_ctrl_offset, sizeof(fadt->firmware_ctrl),

        ACPI_BUILD_TABLE_FILE, off, 4,

        ACPI_BUILD_TABLE_FILE, *f->facs_tbl_offset);



    /* DSDT address to be filled by Guest linker */

    fadt_setup(fadt, *f);

    /* DSDT address to be filled by Guest linker at runtime */

    off = tbl->len;

    build_append_int_noprefix(tbl, 0, 4); /* DSDT */

    bios_linker_loader_add_pointer(linker,

        ACPI_BUILD_TABLE_FILE, dsdt_entry_offset, sizeof(fadt->dsdt),

        ACPI_BUILD_TABLE_FILE, off, 4,

        ACPI_BUILD_TABLE_FILE, *f->dsdt_tbl_offset);



    /* ACPI1.0: INT_MODEL, ACPI2.0+: Reserved */

    build_append_int_noprefix(tbl, f->int_model /* Multiple APIC */, 1);

    /* Preferred_PM_Profile */

    build_append_int_noprefix(tbl, 0 /* Unspecified */, 1);

    build_append_int_noprefix(tbl, f->sci_int, 2); /* SCI_INT */

    build_append_int_noprefix(tbl, f->smi_cmd, 4); /* SMI_CMD */

    build_append_int_noprefix(tbl, f->acpi_enable_cmd, 1); /* ACPI_ENABLE */

    build_append_int_noprefix(tbl, f->acpi_disable_cmd, 1); /* ACPI_DISABLE */

    build_append_int_noprefix(tbl, 0 /* not supported */, 1); /* S4BIOS_REQ */

    /* ACPI1.0: Reserved, ACPI2.0+: PSTATE_CNT */

    build_append_int_noprefix(tbl, 0, 1);

    build_append_int_noprefix(tbl, f->pm1a_evt.address, 4); /* PM1a_EVT_BLK */

    build_append_int_noprefix(tbl, 0, 4); /* PM1b_EVT_BLK */

    build_append_int_noprefix(tbl, f->pm1a_cnt.address, 4); /* PM1a_CNT_BLK */

    build_append_int_noprefix(tbl, 0, 4); /* PM1b_CNT_BLK */

    build_append_int_noprefix(tbl, 0, 4); /* PM2_CNT_BLK */

    build_append_int_noprefix(tbl, f->pm_tmr.address, 4); /* PM_TMR_BLK */

    build_append_int_noprefix(tbl, f->gpe0_blk.address, 4); /* GPE0_BLK */

    build_append_int_noprefix(tbl, 0, 4); /* GPE1_BLK */

    /* PM1_EVT_LEN */

    build_append_int_noprefix(tbl, f->pm1a_evt.bit_width / 8, 1);

    /* PM1_CNT_LEN */

    build_append_int_noprefix(tbl, f->pm1a_cnt.bit_width / 8, 1);

    build_append_int_noprefix(tbl, 0, 1); /* PM2_CNT_LEN */

    build_append_int_noprefix(tbl, f->pm_tmr.bit_width / 8, 1); /* PM_TMR_LEN */

    /* GPE0_BLK_LEN */

    build_append_int_noprefix(tbl, f->gpe0_blk.bit_width / 8, 1);

    build_append_int_noprefix(tbl, 0, 1); /* GPE1_BLK_LEN */

    build_append_int_noprefix(tbl, 0, 1); /* GPE1_BASE */

    build_append_int_noprefix(tbl, 0, 1); /* CST_CNT */

    build_append_int_noprefix(tbl, f->plvl2_lat, 2); /* P_LVL2_LAT */

    build_append_int_noprefix(tbl, f->plvl3_lat, 2); /* P_LVL3_LAT */

    build_append_int_noprefix(tbl, 0, 2); /* FLUSH_SIZE */

    build_append_int_noprefix(tbl, 0, 2); /* FLUSH_STRIDE */

    build_append_int_noprefix(tbl, 0, 1); /* DUTY_OFFSET */

    build_append_int_noprefix(tbl, 0, 1); /* DUTY_WIDTH */

    build_append_int_noprefix(tbl, 0, 1); /* DAY_ALRM */

    build_append_int_noprefix(tbl, 0, 1); /* MON_ALRM */

    build_append_int_noprefix(tbl, f->rtc_century, 1); /* CENTURY */

    build_append_int_noprefix(tbl, 0, 2); /* IAPC_BOOT_ARCH */

    build_append_int_noprefix(tbl, 0, 1); /* Reserved */

    build_append_int_noprefix(tbl, f->flags, 4); /* Flags */



    if (f->rev == 1) {

        fadt_size = offsetof(typeof(*fadt), reset_register);

    } else if (f->xdsdt_tbl_offset) {

        goto build_hdr;

    }



    build_append_gas_from_struct(tbl, &f->reset_reg); /* RESET_REG */

    build_append_int_noprefix(tbl, f->reset_val, 1); /* RESET_VALUE */

    build_append_int_noprefix(tbl, 0, 3); /* Reserved, ACPI 3.0 */

    build_append_int_noprefix(tbl, 0, 8); /* X_FIRMWARE_CTRL */



    /* XDSDT address to be filled by Guest linker at runtime */

    off = tbl->len;

    build_append_int_noprefix(tbl, 0, 8); /* X_DSDT */

    if (f->xdsdt_tbl_offset) {

        bios_linker_loader_add_pointer(linker,

            ACPI_BUILD_TABLE_FILE, xdsdt_entry_offset, sizeof(fadt->x_dsdt),

            ACPI_BUILD_TABLE_FILE, off, 8,

            ACPI_BUILD_TABLE_FILE, *f->xdsdt_tbl_offset);

    }



    build_header(linker, table_data,

                (void *)fadt, "FACP", fadt_size, f->rev,

                oem_id, oem_table_id);

    build_append_gas_from_struct(tbl, &f->pm1a_evt); /* X_PM1a_EVT_BLK */

    /* X_PM1b_EVT_BLK */

    build_append_gas(tbl, AML_AS_SYSTEM_MEMORY, 0 , 0, 0, 0);

    build_append_gas_from_struct(tbl, &f->pm1a_cnt); /* X_PM1a_CNT_BLK */

    /* X_PM1b_CNT_BLK */

    build_append_gas(tbl, AML_AS_SYSTEM_MEMORY, 0 , 0, 0, 0);

    /* X_PM2_CNT_BLK */

    build_append_gas(tbl, AML_AS_SYSTEM_MEMORY, 0 , 0, 0, 0);

    build_append_gas_from_struct(tbl, &f->pm_tmr); /* X_PM_TMR_BLK */

    build_append_gas_from_struct(tbl, &f->gpe0_blk); /* X_GPE0_BLK */

    build_append_gas(tbl, AML_AS_SYSTEM_MEMORY, 0 , 0, 0, 0); /* X_GPE1_BLK */



build_hdr:

    build_header(linker, tbl, (void *)(tbl->data + fadt_start),

                 "FACP", tbl->len - fadt_start, f->rev, oem_id, oem_table_id);

}



void pc_madt_cpu_entry(AcpiDeviceIf *adev, int uid,