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[Qemu-devel] [PULL 11/25] ACPI: Add GPIO Connection Descriptor
From: |
Peter Maydell |
Subject: |
[Qemu-devel] [PULL 11/25] ACPI: Add GPIO Connection Descriptor |
Date: |
Thu, 17 Dec 2015 11:50:06 +0000 |
From: Shannon Zhao <address@hidden>
Signed-off-by: Shannon Zhao <address@hidden>
Signed-off-by: Shannon Zhao <address@hidden>
Tested-by: Wei Huang <address@hidden>
Reviewed-by: Igor Mammedov <address@hidden>
Message-id: address@hidden
Signed-off-by: Peter Maydell <address@hidden>
---
hw/acpi/aml-build.c | 68 +++++++++++++++++++++++++++++++++++++++++++++
include/hw/acpi/aml-build.h | 20 +++++++++++++
2 files changed, 88 insertions(+)
diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
index cd25d06..d8c33a2 100644
--- a/hw/acpi/aml-build.c
+++ b/hw/acpi/aml-build.c
@@ -565,6 +565,74 @@ Aml *aml_call4(const char *method, Aml *arg1, Aml *arg2,
Aml *arg3, Aml *arg4)
}
/*
+ * ACPI 5.0: 6.4.3.8.1 GPIO Connection Descriptor
+ * Type 1, Large Item Name 0xC
+ */
+
+static Aml *aml_gpio_connection(AmlGpioConnectionType type,
+ AmlConsumerAndProducer con_and_pro,
+ uint8_t flags, AmlPinConfig pin_config,
+ uint16_t output_drive,
+ uint16_t debounce_timeout,
+ const uint32_t pin_list[], uint32_t pin_count,
+ const char *resource_source_name,
+ const uint8_t *vendor_data,
+ uint16_t vendor_data_len)
+{
+ Aml *var = aml_alloc();
+ const uint16_t min_desc_len = 0x16;
+ uint16_t resource_source_name_len, length;
+ uint16_t pin_table_offset, resource_source_name_offset, vendor_data_offset;
+ uint32_t i;
+
+ assert(resource_source_name);
+ resource_source_name_len = strlen(resource_source_name) + 1;
+ length = min_desc_len + resource_source_name_len + vendor_data_len;
+ pin_table_offset = min_desc_len + 1;
+ resource_source_name_offset = pin_table_offset + pin_count * 2;
+ vendor_data_offset = resource_source_name_offset +
resource_source_name_len;
+
+ build_append_byte(var->buf, 0x8C); /* GPIO Connection Descriptor */
+ build_append_int_noprefix(var->buf, length, 2); /* Length */
+ build_append_byte(var->buf, 1); /* Revision ID */
+ build_append_byte(var->buf, type); /* GPIO Connection Type */
+ /* General Flags (2 bytes) */
+ build_append_int_noprefix(var->buf, con_and_pro, 2);
+ /* Interrupt and IO Flags (2 bytes) */
+ build_append_int_noprefix(var->buf, flags, 2);
+ /* Pin Configuration 0 = Default 1 = Pull-up 2 = Pull-down 3 = No Pull */
+ build_append_byte(var->buf, pin_config);
+ /* Output Drive Strength (2 bytes) */
+ build_append_int_noprefix(var->buf, output_drive, 2);
+ /* Debounce Timeout (2 bytes) */
+ build_append_int_noprefix(var->buf, debounce_timeout, 2);
+ /* Pin Table Offset (2 bytes) */
+ build_append_int_noprefix(var->buf, pin_table_offset, 2);
+ build_append_byte(var->buf, 0); /* Resource Source Index */
+ /* Resource Source Name Offset (2 bytes) */
+ build_append_int_noprefix(var->buf, resource_source_name_offset, 2);
+ /* Vendor Data Offset (2 bytes) */
+ build_append_int_noprefix(var->buf, vendor_data_offset, 2);
+ /* Vendor Data Length (2 bytes) */
+ build_append_int_noprefix(var->buf, vendor_data_len, 2);
+ /* Pin Number (2n bytes)*/
+ for (i = 0; i < pin_count; i++) {
+ build_append_int_noprefix(var->buf, pin_list[i], 2);
+ }
+
+ /* Resource Source Name */
+ build_append_namestring(var->buf, "%s", resource_source_name);
+ build_append_byte(var->buf, '\0');
+
+ /* Vendor-defined Data */
+ if (vendor_data != NULL) {
+ g_array_append_vals(var->buf, vendor_data, vendor_data_len);
+ }
+
+ return var;
+}
+
+/*
* ACPI 1.0b: 6.4.3.4 32-Bit Fixed Location Memory Range Descriptor
* (Type 1, Large Item Name 0x6)
*/
diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h
index c2c0be3..f1817e4 100644
--- a/include/hw/acpi/aml-build.h
+++ b/include/hw/acpi/aml-build.h
@@ -154,6 +154,26 @@ typedef enum {
AML_SERIALIZED = 1,
} AmlSerializeFlag;
+/*
+ * ACPI 5.0: Table 6-189 GPIO Connection Descriptor Definition
+ * GPIO Connection Type
+ */
+typedef enum {
+ AML_INTERRUPT_CONNECTION = 0,
+ AML_IO_CONNECTION = 1,
+} AmlGpioConnectionType;
+
+/*
+ * ACPI 5.0: Table 6-189 GPIO Connection Descriptor Definition
+ * _PPI field definition
+ */
+typedef enum {
+ AML_PULL_DEFAULT = 0,
+ AML_PULL_UP = 1,
+ AML_PULL_DOWN = 2,
+ AML_PULL_NONE = 3,
+} AmlPinConfig;
+
typedef
struct AcpiBuildTables {
GArray *table_data;
--
1.9.1
- [Qemu-devel] [PULL 25/25] i.MX: Add an i.MX25 specific CCM class/instance, (continued)
- [Qemu-devel] [PULL 25/25] i.MX: Add an i.MX25 specific CCM class/instance, Peter Maydell, 2015/12/17
- [Qemu-devel] [PULL 14/25] ARM: Virt: Add QEMU powerdown notifier and hook it to GPIO Pin 3, Peter Maydell, 2015/12/17
- [Qemu-devel] [PULL 07/25] acpi: extend aml_interrupt() to support multiple irqs, Peter Maydell, 2015/12/17
- [Qemu-devel] [PULL 12/25] ACPI: Add aml_gpio_int() wrapper for GPIO Interrupt Connection, Peter Maydell, 2015/12/17
- [Qemu-devel] [PULL 08/25] ARM: Virt: Add a GPIO controller, Peter Maydell, 2015/12/17
- [Qemu-devel] [PULL 03/25] arm: soc-dma: use hwaddr instead of target_ulong in printf, Peter Maydell, 2015/12/17
- [Qemu-devel] [PULL 01/25] i.MX: add support for lower and upper interrupt in GPIO., Peter Maydell, 2015/12/17
- [Qemu-devel] [PULL 04/25] target-arm: raise exception on misaligned LDREX operands, Peter Maydell, 2015/12/17
- [Qemu-devel] [PULL 09/25] ARM: ACPI: Add GPIO controller in ACPI DSDT table, Peter Maydell, 2015/12/17
- [Qemu-devel] [PULL 13/25] ARM: ACPI: Add _E03 for Power Button, Peter Maydell, 2015/12/17
- [Qemu-devel] [PULL 11/25] ACPI: Add GPIO Connection Descriptor,
Peter Maydell <=
- [Qemu-devel] [PULL 06/25] acpi: support serialized method, Peter Maydell, 2015/12/17
- [Qemu-devel] [PULL 02/25] arm: explicitly mark device loads as little-endian, Peter Maydell, 2015/12/17
- Re: [Qemu-devel] [PULL 00/25] target-arm queue, Peter Maydell, 2015/12/17