diff mbox series

[v7,05/10] ACPI ERST: build the ACPI ERST table

Message ID 1633626876-12115-6-git-send-email-eric.devolder@oracle.com
State New
Headers show
Series acpi: Error Record Serialization Table, ERST, support for QEMU | expand

Commit Message

Eric DeVolder Oct. 7, 2021, 5:14 p.m. UTC 
This builds the ACPI ERST table to inform OSPM how to communicate
with the acpi-erst device.

Signed-off-by: Eric DeVolder <eric.devolder@oracle.com>
---
 hw/acpi/erst.c | 239 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 239 insertions(+)
diff mbox series

Patch

diff --git a/hw/acpi/erst.c b/hw/acpi/erst.c
index af7e1a9..177fa51 100644
--- a/hw/acpi/erst.c
+++ b/hw/acpi/erst.c
@@ -701,6 +701,245 @@  static const MemoryRegionOps erst_reg_ops = {
     .endianness = DEVICE_NATIVE_ENDIAN,
 };
 
+
+/*******************************************************************/
+/*******************************************************************/
+
+/* ACPI 4.0: Table 17-19 Serialization Instructions */
+#define INST_READ_REGISTER                 0x00
+#define INST_READ_REGISTER_VALUE           0x01
+#define INST_WRITE_REGISTER                0x02
+#define INST_WRITE_REGISTER_VALUE          0x03
+#define INST_NOOP                          0x04
+#define INST_LOAD_VAR1                     0x05
+#define INST_LOAD_VAR2                     0x06
+#define INST_STORE_VAR1                    0x07
+#define INST_ADD                           0x08
+#define INST_SUBTRACT                      0x09
+#define INST_ADD_VALUE                     0x0A
+#define INST_SUBTRACT_VALUE                0x0B
+#define INST_STALL                         0x0C
+#define INST_STALL_WHILE_TRUE              0x0D
+#define INST_SKIP_NEXT_INSTRUCTION_IF_TRUE 0x0E
+#define INST_GOTO                          0x0F
+#define INST_SET_SRC_ADDRESS_BASE          0x10
+#define INST_SET_DST_ADDRESS_BASE          0x11
+#define INST_MOVE_DATA                     0x12
+
+/* ACPI 4.0: 17.4.1.2 Serialization Instruction Entries */
+static void build_serialization_instruction_entry(GArray *table_data,
+    uint8_t serialization_action,
+    uint8_t instruction,
+    uint8_t flags,
+    uint8_t register_bit_width,
+    uint64_t register_address,
+    uint64_t value,
+    uint64_t mask)
+{
+    /* ACPI 4.0: Table 17-18 Serialization Instruction Entry */
+    struct AcpiGenericAddress gas;
+
+    /* Serialization Action */
+    build_append_int_noprefix(table_data, serialization_action, 1);
+    /* Instruction */
+    build_append_int_noprefix(table_data, instruction         , 1);
+    /* Flags */
+    build_append_int_noprefix(table_data, flags               , 1);
+    /* Reserved */
+    build_append_int_noprefix(table_data, 0                   , 1);
+    /* Register Region */
+    gas.space_id = AML_SYSTEM_MEMORY;
+    gas.bit_width = register_bit_width;
+    gas.bit_offset = 0;
+    switch (register_bit_width) {
+    case 8:
+        gas.access_width = 1;
+        break;
+    case 16:
+        gas.access_width = 2;
+        break;
+    case 32:
+        gas.access_width = 3;
+        break;
+    case 64:
+        gas.access_width = 4;
+        break;
+    default:
+        gas.access_width = 0;
+        break;
+    }
+    gas.address = register_address;
+    build_append_gas_from_struct(table_data, &gas);
+    /* Value */
+    build_append_int_noprefix(table_data, value  , 8);
+    /* Mask */
+    build_append_int_noprefix(table_data, mask   , 8);
+}
+
+/* ACPI 4.0: 17.4.1 Serialization Action Table */
+void build_erst(GArray *table_data, BIOSLinker *linker, Object *erst_dev,
+    const char *oem_id, const char *oem_table_id)
+{
+    GArray *table_instruction_data;
+    unsigned action;
+    unsigned erst_start = table_data->len;
+    hwaddr bar0, bar1;
+
+    bar0 = (hwaddr)pci_get_bar_addr(PCI_DEVICE(erst_dev), 0);
+    trace_acpi_erst_pci_bar_0(bar0);
+    bar1 = (hwaddr)pci_get_bar_addr(PCI_DEVICE(erst_dev), 1);
+    trace_acpi_erst_pci_bar_1(bar1);
+
+#define MASK8  0x00000000000000FFUL
+#define MASK16 0x000000000000FFFFUL
+#define MASK32 0x00000000FFFFFFFFUL
+#define MASK64 0xFFFFFFFFFFFFFFFFUL
+
+    /*
+     * Serialization Action Table
+     * The serialization action table must be generated first
+     * so that its size can be known in order to populate the
+     * Instruction Entry Count field.
+     */
+    table_instruction_data = g_array_new(FALSE, FALSE, sizeof(char));
+
+    /* Serialization Instruction Entries */
+    action = ACTION_BEGIN_WRITE_OPERATION;
+    build_serialization_instruction_entry(table_instruction_data,
+        action, INST_WRITE_REGISTER_VALUE, 0, 32,
+        bar0 + ERST_ACTION_OFFSET, action, MASK8);
+
+    action = ACTION_BEGIN_READ_OPERATION;
+    build_serialization_instruction_entry(table_instruction_data,
+        action, INST_WRITE_REGISTER_VALUE, 0, 32,
+        bar0 + ERST_ACTION_OFFSET, action, MASK8);
+
+    action = ACTION_BEGIN_CLEAR_OPERATION;
+    build_serialization_instruction_entry(table_instruction_data,
+        action, INST_WRITE_REGISTER_VALUE, 0, 32,
+        bar0 + ERST_ACTION_OFFSET, action, MASK8);
+
+    action = ACTION_END_OPERATION;
+    build_serialization_instruction_entry(table_instruction_data,
+        action, INST_WRITE_REGISTER_VALUE, 0, 32,
+        bar0 + ERST_ACTION_OFFSET, action, MASK8);
+
+    action = ACTION_SET_RECORD_OFFSET;
+    build_serialization_instruction_entry(table_instruction_data,
+        action, INST_WRITE_REGISTER      , 0, 32,
+        bar0 + ERST_VALUE_OFFSET , 0, MASK32);
+    build_serialization_instruction_entry(table_instruction_data,
+        action, INST_WRITE_REGISTER_VALUE, 0, 32,
+        bar0 + ERST_ACTION_OFFSET, action, MASK8);
+
+    action = ACTION_EXECUTE_OPERATION;
+    build_serialization_instruction_entry(table_instruction_data,
+        action, INST_WRITE_REGISTER_VALUE, 0, 32,
+        bar0 + ERST_VALUE_OFFSET , ERST_EXECUTE_OPERATION_MAGIC, MASK8);
+    build_serialization_instruction_entry(table_instruction_data,
+        action, INST_WRITE_REGISTER_VALUE, 0, 32,
+        bar0 + ERST_ACTION_OFFSET, action, MASK8);
+
+    action = ACTION_CHECK_BUSY_STATUS;
+    build_serialization_instruction_entry(table_instruction_data,
+        action, INST_WRITE_REGISTER_VALUE, 0, 32,
+        bar0 + ERST_ACTION_OFFSET, action, MASK8);
+    build_serialization_instruction_entry(table_instruction_data,
+        action, INST_READ_REGISTER_VALUE , 0, 32,
+        bar0 + ERST_VALUE_OFFSET, 0x01, MASK8);
+
+    action = ACTION_GET_COMMAND_STATUS;
+    build_serialization_instruction_entry(table_instruction_data,
+        action, INST_WRITE_REGISTER_VALUE, 0, 32,
+        bar0 + ERST_ACTION_OFFSET, action, MASK8);
+    build_serialization_instruction_entry(table_instruction_data,
+        action, INST_READ_REGISTER       , 0, 32,
+        bar0 + ERST_VALUE_OFFSET, 0, MASK8);
+
+    action = ACTION_GET_RECORD_IDENTIFIER;
+    build_serialization_instruction_entry(table_instruction_data,
+        action, INST_WRITE_REGISTER_VALUE, 0, 32,
+        bar0 + ERST_ACTION_OFFSET, action, MASK8);
+    build_serialization_instruction_entry(table_instruction_data,
+        action, INST_READ_REGISTER       , 0, 64,
+        bar0 + ERST_VALUE_OFFSET, 0, MASK64);
+
+    action = ACTION_SET_RECORD_IDENTIFIER;
+    build_serialization_instruction_entry(table_instruction_data,
+        action, INST_WRITE_REGISTER      , 0, 64,
+        bar0 + ERST_VALUE_OFFSET , 0, MASK64);
+    build_serialization_instruction_entry(table_instruction_data,
+        action, INST_WRITE_REGISTER_VALUE, 0, 32,
+        bar0 + ERST_ACTION_OFFSET, action, MASK8);
+
+    action = ACTION_GET_RECORD_COUNT;
+    build_serialization_instruction_entry(table_instruction_data,
+        action, INST_WRITE_REGISTER_VALUE, 0, 32,
+        bar0 + ERST_ACTION_OFFSET, action, MASK8);
+    build_serialization_instruction_entry(table_instruction_data,
+        action, INST_READ_REGISTER       , 0, 32,
+        bar0 + ERST_VALUE_OFFSET, 0, MASK32);
+
+    action = ACTION_BEGIN_DUMMY_WRITE_OPERATION;
+    build_serialization_instruction_entry(table_instruction_data,
+        action, INST_WRITE_REGISTER_VALUE, 0, 32,
+        bar0 + ERST_ACTION_OFFSET, action, MASK8);
+
+    action = ACTION_GET_ERROR_LOG_ADDRESS_RANGE;
+    build_serialization_instruction_entry(table_instruction_data,
+        action, INST_WRITE_REGISTER_VALUE, 0, 32,
+        bar0 + ERST_ACTION_OFFSET, action, MASK8);
+    build_serialization_instruction_entry(table_instruction_data,
+        action, INST_READ_REGISTER       , 0, 64,
+        bar0 + ERST_VALUE_OFFSET, 0, MASK64);
+
+    action = ACTION_GET_ERROR_LOG_ADDRESS_LENGTH;
+    build_serialization_instruction_entry(table_instruction_data,
+        action, INST_WRITE_REGISTER_VALUE, 0, 32,
+        bar0 + ERST_ACTION_OFFSET, action, MASK8);
+    build_serialization_instruction_entry(table_instruction_data,
+        action, INST_READ_REGISTER       , 0, 64,
+        bar0 + ERST_VALUE_OFFSET, 0, MASK32);
+
+    action = ACTION_GET_ERROR_LOG_ADDRESS_RANGE_ATTRIBUTES;
+    build_serialization_instruction_entry(table_instruction_data,
+        action, INST_WRITE_REGISTER_VALUE, 0, 32,
+        bar0 + ERST_ACTION_OFFSET, action, MASK8);
+    build_serialization_instruction_entry(table_instruction_data,
+        action, INST_READ_REGISTER       , 0, 32,
+        bar0 + ERST_VALUE_OFFSET, 0, MASK32);
+
+    action = ACTION_GET_EXECUTE_OPERATION_TIMINGS;
+    build_serialization_instruction_entry(table_instruction_data,
+        action, INST_WRITE_REGISTER_VALUE, 0, 32,
+        bar0 + ERST_ACTION_OFFSET, action, MASK8);
+    build_serialization_instruction_entry(table_instruction_data,
+        action, INST_READ_REGISTER       , 0, 64,
+        bar0 + ERST_VALUE_OFFSET, 0, MASK64);
+
+    /* Serialization Header */
+    acpi_data_push(table_data, sizeof(AcpiTableHeader));
+    /* Serialization Header Size */
+    build_append_int_noprefix(table_data, 48, 4);
+    /* Reserved */
+    build_append_int_noprefix(table_data,  0, 4);
+    /*
+     * Instruction Entry Count
+     * Each instruction entry is 32 bytes
+     */
+    build_append_int_noprefix(table_data,
+        (table_instruction_data->len / 32), 4);
+    /* Serialization Instruction Entries */
+    g_array_append_vals(table_data, table_instruction_data->data,
+        table_instruction_data->len);
+    g_array_free(table_instruction_data, TRUE);
+
+    build_header(linker, table_data,
+                 (void *)(table_data->data + erst_start),
+                 "ERST", table_data->len - erst_start,
+                 1, oem_id, oem_table_id);
+}
+
 /*******************************************************************/
 /*******************************************************************/
 static int erst_post_load(void *opaque, int version_id)