acpi: Remove acpigen_write_OSC_pci_domain

For PCI domains, static _OSC will be used for better readability
and maintenance.

This reverts commit f4a12e1d39a097e17007ef11ccf784c2a42f1924.

TEST=Build and boot on intel/archercity CRB

Change-Id: I2e2b2f0533a3940caf2806ec1ed048c30e4ba801
Signed-off-by: Shuo Liu <shuo.liu@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82032
Reviewed-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

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;
-}