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-rw-r--r--src/acpi/acpigen_pci.c305
1 files changed, 0 insertions, 305 deletions
diff --git a/src/acpi/acpigen_pci.c b/src/acpi/acpigen_pci.c
index a23b84c39f..3edf0d0342 100644
--- a/src/acpi/acpigen_pci.c
+++ b/src/acpi/acpigen_pci.c
@@ -55,308 +55,3 @@ void acpigen_write_PRT_source_entry(unsigned int pci_dev, unsigned int acpi_pin,
acpigen_pop_len(); /* Package */
}
-
-#define PCI_HOST_BRIDGE_OSC_UUID "33db4d5b-1ff7-401c-9657-7441c03dd766"
-#define CXL_HOST_BRIDGE_OSC_UUID "68f2d50b-c469-4d8a-bd3d-941a103fd3fc"
-
-#define OSC_RET_FAILURE 0x02
-#define OSC_RET_UNRECOGNIZED_UUID 0x04
-#define OSC_RET_UNRECOGNIZED_REV 0x08
-#define OSC_RET_CAPABILITIES_MASKED 0x10
-
-#define OSC_QUERY_SUPPORT_SET 0x01
-
-#define ASL_UUID_UNHANDLED 0x00
-#define ASL_UUID_HANDLED 0x01
-
-static void acpigen_OSC_handle_pcie_request(const struct device *domain);
-static void acpigen_OSC_handle_cxl_request(const struct device *domain);
-
-/*
- * acpigen_write_OSC_pci_domain
- *
- * Reference:
- * 6.2.11 in https://uefi.org/htmlspecs/ACPI_Spec_6_4_html/06_Device_Configuration/Device_Configuration.html
- *
- * _OSC ASL Arguments: (4)
- * Arg0 - A Buffer containing a UUID
- * Arg1 - An Integer containing a Revision ID of the buffer format
- * Arg2 - An Integer containing a count of entries in Arg3
- * Arg3 - A Buffer containing a list of DWORD capabilities
- *
- * _OSC ASL Return Value:
- * A Buffer containing a list of capabilities
- *
- * Local Variables Assignment:
- * Local0 - Temp assigned
- * Local1 - Temp assigned
- * Local2 - Not used
- * Local3 - Not used
- * Local4 - Not used
- * Local5 - Not used
- * Local6 - Record whether the UUID is handled
- * Local7 - Backs up the input value of Arg3
- *
- * Field Definitions:
- * Name - Width Source Offset Description
- * --------------------------------
- * QSUP - DWord Local7 0x00 Query support
- * RETE - DWord Arg3 0x00 Returned errors
- * SUPP - Dword Arg3 0x04 PCIe Features that OS supported
- * CTRL - Dword Arg3 0x08 PCIe Features that firmware grant control to OS
- * OTRL - Dword Local7 0x08 PCIe Features that OS requests for control
- * SUPC - Dword Arg3 0x0C CXL Features that OS supported
- * CTRC - Dword Arg3 0x10 CXL Features that firmware grant control to OS
- * OTRC - Dword Local7 0x10 CXL Features that OS requests for control
- */
-void acpigen_write_OSC_pci_domain(const struct device *domain, const bool is_cxl_domain)
-{
- /*
- * Method (_OSC, 4, NotSerialized)
- * {
- */
- acpigen_write_method("_OSC", 4);
-
- /*
- * //
- * // Check revision ID
- * //
- * If (Arg1 != 1)
- * {
- * RETE = OSC_RET_UNRECOGNIZED_REV
- * Return (Arg3)
- * }
- */
- acpigen_write_if();
- acpigen_emit_byte(LNOT_OP);
- acpigen_emit_byte(LEQUAL_OP);
- acpigen_emit_byte(ARG1_OP);
- acpigen_write_integer(0x1);
-
- acpigen_write_store_int_to_namestr(OSC_RET_UNRECOGNIZED_REV, "RETE");
- acpigen_write_return_op(ARG3_OP);
-
- acpigen_write_if_end();
-
- /*
- * //
- * // Setup up local variables
- * //
- * Local7 = Arg3
- * CreateDwordField (Local7, 0x00, QSUP)
- * CreateDWordField (Arg3, 0x00, RETE)
- * RETE = 0x0
- * Local6 = ASL_UUID_UNHANDLED
- */
- acpigen_write_store_ops(ARG3_OP, LOCAL7_OP);
- acpigen_write_create_dword_field(LOCAL7_OP, 0x00, "QSUP");
- acpigen_write_create_dword_field(ARG3_OP, 0x00, "RETE");
- acpigen_write_store_int_to_namestr(0x0, "RETE");
- acpigen_write_store_int_to_op(ASL_UUID_UNHANDLED, LOCAL6_OP);
-
- /*
- * //
- * // Refer to CXL-3.1-Specification, 9.18.2
- * // A CXL Host Bridge also originates a PCIe hierarchy and will have a
- * // _CID of EISAID("PNP0A08"). As such, a CXL Host Bridge device may expose
- * // both CXL _OSC and PCIe _OSC.
- * //
- *
- * If (Arg0 == ToUUID (PCI_HOST_BRIDGE_OSC_UUID))
- * {
- * //
- * // Handle PCIe _OSC request
- * // Mark UUID handled
- * //
- * }
- */
- acpigen_write_if();
- acpigen_emit_byte(LEQUAL_OP);
- acpigen_emit_byte(ARG0_OP);
- acpigen_write_uuid(PCI_HOST_BRIDGE_OSC_UUID);
-
- acpigen_OSC_handle_pcie_request(domain);
- acpigen_write_store_int_to_op(ASL_UUID_HANDLED, LOCAL6_OP);
-
- acpigen_write_if_end();
-
- if (is_cxl_domain) {
- /*
- * If (Arg0 == ToUUID (CXL_HOST_BRIDGE_OSC_UUID))
- * {
- * //
- * // Handle CXL _OSC request
- * // Mark UUID handled
- * //
- * }
- */
- acpigen_write_if();
- acpigen_emit_byte(LEQUAL_OP);
- acpigen_emit_byte(ARG0_OP);
- acpigen_write_uuid(CXL_HOST_BRIDGE_OSC_UUID);
-
- acpigen_OSC_handle_cxl_request(domain);
- acpigen_write_store_int_to_op(ASL_UUID_HANDLED, LOCAL6_OP);
-
- acpigen_write_if_end();
- }
-
- /*
- * //
- * // Handle unrecognized UUID
- * //
- * If (Local6 == ASL_UUID_UNHANDLED)
- * {
- * RETE = OSC_RET_UNRECOGNIZED_UUID
- * }
- */
- acpigen_write_if_lequal_op_int(LOCAL6_OP, ASL_UUID_UNHANDLED);
- acpigen_write_store_int_to_namestr(OSC_RET_UNRECOGNIZED_UUID, "RETE");
- acpigen_write_if_end();
-
- /*
- * //
- * // All done, return
- * //
- * Return (Arg3)
- */
- acpigen_write_return_op(ARG3_OP);
-
- /*
- * } // Method (_OSC, 4, NotSerialized)
- */
- acpigen_pop_len();
-
-}
-
-void acpigen_OSC_handle_pcie_request(const struct device *domain)
-{
- uint32_t osc_features = soc_get_granted_pci_features(domain);
-
- /*
- * If (Arg2 < 2))
- * {
- * RETE = OSC_RET_FAILURE
- * Return (Arg3)
- * }
- */
- acpigen_write_if();
- acpigen_emit_byte(LLESS_OP);
- acpigen_emit_byte(ARG2_OP);
- acpigen_write_integer(0x2);
-
- acpigen_write_store_int_to_namestr(OSC_RET_FAILURE, "RETE");
- acpigen_write_return_op(ARG3_OP);
-
- acpigen_write_if_end();
-
- /*
- * CreateDWordField (Arg3, 0x04, SUPP)
- * CreateDWordField (Arg3, 0x08, CTRL)
- * CreateDWordField (Local7, 0x08, OTRL)
- */
- acpigen_write_create_dword_field(ARG3_OP, 0x04, "SUPP");
- acpigen_write_create_dword_field(ARG3_OP, 0x08, "CTRL");
- acpigen_write_create_dword_field(LOCAL7_OP, 0x08, "OTRL");
-
- /*
- * // Grant PCIe feature controls to OS
- * CTRL &= osc_features
- */
- acpigen_write_to_integer_from_namestring("CTRL", LOCAL0_OP);
- acpigen_write_store_int_to_op(osc_features, LOCAL1_OP);
- acpigen_write_and(LOCAL0_OP, LOCAL1_OP, LOCAL0_OP);
- acpigen_write_store_op_to_namestr(LOCAL0_OP, "CTRL");
-
- /*
- * If (CTRL != OTRL)
- * {
- * RETE = OSC_RET_CAPABILITIES_MASKED
- * }
- */
- acpigen_write_if();
- acpigen_emit_byte(LNOT_OP);
- acpigen_emit_byte(LEQUAL_OP);
- acpigen_emit_namestring("CTRL");
- acpigen_emit_namestring("OTRL");
- acpigen_write_store_int_to_namestr(OSC_RET_CAPABILITIES_MASKED, "RETE");
- acpigen_write_if_end();
-};
-
-void acpigen_OSC_handle_cxl_request(const struct device *domain)
-{
- uint32_t osc_features = soc_get_granted_cxl_features(domain);
-
- /*
- * If (Arg2 < 4))
- * {
- * RETE = OSC_RET_FAILURE
- * Return (Arg3)
- * }
- */
- acpigen_write_if();
- acpigen_emit_byte(LLESS_OP);
- acpigen_emit_byte(ARG2_OP);
- acpigen_write_integer(0x4);
-
- acpigen_write_store_int_to_namestr(OSC_RET_FAILURE, "RETE");
- acpigen_write_return_op(ARG3_OP);
-
- acpigen_write_if_end();
-
- /*
- * CreateDWordField (Arg3, 0x0C, SUPC)
- * CreateDWordField (Arg3, 0x10, CTRC)
- * CreateDWordField (Local7, 0x10, OTRC)
- */
- acpigen_write_create_dword_field(ARG3_OP, 0x0C, "SUPC");
- acpigen_write_create_dword_field(ARG3_OP, 0x10, "CTRC");
- acpigen_write_create_dword_field(LOCAL7_OP, 0x10, "OTRC");
-
- /*
- * // Grant CXL feature controls to OS
- * CTRC &= osc_features
- */
- acpigen_write_to_integer_from_namestring("CTRC", LOCAL0_OP);
- acpigen_write_store_int_to_op(osc_features, LOCAL1_OP);
- acpigen_write_and(LOCAL0_OP, LOCAL1_OP, LOCAL0_OP);
- acpigen_write_store_op_to_namestr(LOCAL0_OP, "CTRC");
-
- /*
- * If (CTRC != OTRC)
- * {
- * RETE = OSC_RET_CAPABILITIES_MASKED
- * }
- */
- acpigen_write_if();
- acpigen_emit_byte(LNOT_OP);
- acpigen_emit_byte(LEQUAL_OP);
- acpigen_emit_namestring("CTRC");
- acpigen_emit_namestring("OTRC");
- acpigen_write_store_int_to_namestr(OSC_RET_CAPABILITIES_MASKED, "RETE");
- acpigen_write_if_end();
-};
-
-__weak uint32_t soc_get_granted_pci_features(const struct device *domain)
-{
- /*
- * By default grant no features to OS, which equals to the case where _OSC
- * is absent.
- *
- * Refer to PCI firmware specification, revision 3.1.
- * If the _OSC control method is absent from the scope of a host bridge device, then
- * the operating system must not enable or attempt to use any features defined in this
- * section for the hierarchy originated by the host bridge. Doing so could contend with
- * platform firmware operations or produce undesired results.
- */
- return 0;
-}
-
-__weak uint32_t soc_get_granted_cxl_features(const struct device *domain)
-{
- /*
- * By default grant no features to OS, which equals to the case where _OSC
- * is absent.
- */
- return 0;
-}
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