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[Qemu-devel] [PATCH 5/7] acpi: Add I2c serial bus CRS handling
From: |
minyard |
Subject: |
[Qemu-devel] [PATCH 5/7] acpi: Add I2c serial bus CRS handling |
Date: |
Wed, 11 May 2016 14:46:04 -0500 |
From: Corey Minyard <address@hidden>
Signed-off-by: Corey Minyard <address@hidden>
---
hw/acpi/aml-build.c | 42 ++++++++++++++++++++++++++++++++++++++++++
include/hw/acpi/aml-build.h | 11 +++++++++++
2 files changed, 53 insertions(+)
diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
index ab89ca6..7a3874b 100644
--- a/hw/acpi/aml-build.c
+++ b/hw/acpi/aml-build.c
@@ -1563,3 +1563,45 @@ build_rsdt(GArray *table_data, GArray *linker, GArray
*table_offsets,
build_header(linker, table_data,
(void *)rsdt, "RSDT", rsdt_len, 1, oem_id, oem_table_id);
}
+
+static Aml *aml_serial_bus_device(AmlSerialBusType type, uint8_t flags,
+ uint16_t type_flags,
+ uint8_t revid, uint16_t data_length,
+ uint16_t resource_source_length)
+{
+ Aml *var = aml_alloc();
+ uint16_t length = data_length + resource_source_length + 9;
+
+ build_append_byte(var->buf, 0x8e); /* Serial Bus Connection Descriptor */
+ build_append_byte(var->buf, length & 0xff);
+ build_append_byte(var->buf, length >> 8);
+ build_append_byte(var->buf, 1); /* Revision */
+ build_append_byte(var->buf, 0); /* Resource source index */
+ build_append_byte(var->buf, type); /* Serial bus type */
+ build_append_byte(var->buf, flags); /* Serial bus type */
+ build_append_byte(var->buf, type_flags & 0xff);
+ build_append_byte(var->buf, type_flags >> 8);
+ build_append_byte(var->buf, revid);
+ build_append_byte(var->buf, data_length & 0xff);
+ build_append_byte(var->buf, data_length >> 8);
+
+ return var;
+}
+
+Aml *aml_i2c_serial_bus_device(uint8_t flags, uint32_t con_speed,
+ uint16_t address, const char *resource_source)
+{
+ unsigned int resource_source_len = strlen(resource_source) + 1;
+ Aml *var = aml_serial_bus_device(aml_serial_bus_type_i2c, flags, 0, 1,
+ 6, resource_source_len);
+
+ build_append_byte(var->buf, con_speed & 0xff);
+ build_append_byte(var->buf, (con_speed >> 8) & 0xff);
+ build_append_byte(var->buf, (con_speed >> 16) & 0xff);
+ build_append_byte(var->buf, (con_speed >> 24) & 0xff);
+ build_append_byte(var->buf, address & 0xff);
+ build_append_byte(var->buf, address >> 8);
+ g_array_append_vals(var->buf, resource_source, resource_source_len);
+
+ return var;
+}
diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h
index 2c994b3..1eb3ebd 100644
--- a/include/hw/acpi/aml-build.h
+++ b/include/hw/acpi/aml-build.h
@@ -206,6 +206,15 @@ struct AcpiBuildTables {
GArray *linker;
} AcpiBuildTables;
+typedef enum {
+ aml_serial_bus_type_i2c = 1,
+ aml_serial_bus_type_spi = 2,
+ aml_serial_bus_type_uart = 3
+} AmlSerialBusType;
+
+#define AML_SERIAL_BUS_FLAG_MASTER_DEVICE (1 << 0)
+#define AML_SERIAL_BUS_FLAG_CONSUME_ONLY (1 << 1)
+
/**
* init_aml_allocator:
*
@@ -327,6 +336,8 @@ Aml *aml_qword_memory(AmlDecode dec, AmlMinFixed min_fixed,
Aml *aml_dma(AmlDmaType typ, AmlDmaBusMaster bm, AmlTransferSize sz,
uint8_t channel);
Aml *aml_sleep(uint64_t msec);
+Aml *aml_i2c_serial_bus_device(uint8_t flags, uint32_t con_speed,
+ uint16_t address, const char *resource_source);
/* Block AML object primitives */
Aml *aml_scope(const char *name_format, ...) GCC_FMT_ATTR(1, 2);
--
2.7.4
- Re: [Qemu-devel] [PATCH 7/7] ipmi: Add ACPI to the SMBus IPMI device, (continued)
[Qemu-devel] [PATCH 4/7] ipmi: Add an SMBus IPMI interface, minyard, 2016/05/11
[Qemu-devel] [PATCH 6/7] ipmi: Fix SSIF ACPI handling to use the right CRS, minyard, 2016/05/11
[Qemu-devel] [PATCH 5/7] acpi: Add I2c serial bus CRS handling,
minyard <=
[Qemu-devel] [PATCH 3/7] pc: Add the SMBus device to the ACPI tables, minyard, 2016/05/11
[Qemu-devel] [PATCH 1/7] i2c: Fix the PM SMBus driver so it actually works correctly, minyard, 2016/05/11