Adding upstream version 5.10.209.upstream/5.10.209

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 537 insertions, 0 deletions

diff --git a/drivers/acpi/acpica/exregion.c b/drivers/acpi/acpica/exregion.c
new file mode 100644
index 000000000..4914dbc44
--- /dev/null
+++ b/drivers/acpi/acpica/exregion.c
@@ -0,0 +1,537 @@
+// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
+/******************************************************************************
+ *
+ * Module Name: exregion - ACPI default op_region (address space) handlers
+ *
+ * Copyright (C) 2000 - 2020, Intel Corp.
+ *
+ *****************************************************************************/
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acinterp.h"
+
+#define _COMPONENT          ACPI_EXECUTER
+ACPI_MODULE_NAME("exregion")
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_system_memory_space_handler
+ *
+ * PARAMETERS:  function            - Read or Write operation
+ *              address             - Where in the space to read or write
+ *              bit_width           - Field width in bits (8, 16, or 32)
+ *              value               - Pointer to in or out value
+ *              handler_context     - Pointer to Handler's context
+ *              region_context      - Pointer to context specific to the
+ *                                    accessed region
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Handler for the System Memory address space (Op Region)
+ *
+ ******************************************************************************/
+acpi_status
+acpi_ex_system_memory_space_handler(u32 function,
+				    acpi_physical_address address,
+				    u32 bit_width,
+				    u64 *value,
+				    void *handler_context, void *region_context)
+{
+	acpi_status status = AE_OK;
+	void *logical_addr_ptr = NULL;
+	struct acpi_mem_space_context *mem_info = region_context;
+	struct acpi_mem_mapping *mm = mem_info->cur_mm;
+	u32 length;
+	acpi_size map_length;
+	acpi_size page_boundary_map_length;
+#ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED
+	u32 remainder;
+#endif
+
+	ACPI_FUNCTION_TRACE(ex_system_memory_space_handler);
+
+	/* Validate and translate the bit width */
+
+	switch (bit_width) {
+	case 8:
+
+		length = 1;
+		break;
+
+	case 16:
+
+		length = 2;
+		break;
+
+	case 32:
+
+		length = 4;
+		break;
+
+	case 64:
+
+		length = 8;
+		break;
+
+	default:
+
+		ACPI_ERROR((AE_INFO, "Invalid SystemMemory width %u",
+			    bit_width));
+		return_ACPI_STATUS(AE_AML_OPERAND_VALUE);
+	}
+
+#ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED
+	/*
+	 * Hardware does not support non-aligned data transfers, we must verify
+	 * the request.
+	 */
+	(void)acpi_ut_short_divide((u64) address, length, NULL, &remainder);
+	if (remainder != 0) {
+		return_ACPI_STATUS(AE_AML_ALIGNMENT);
+	}
+#endif
+
+	/*
+	 * Does the request fit into the cached memory mapping?
+	 * Is 1) Address below the current mapping? OR
+	 *    2) Address beyond the current mapping?
+	 */
+	if (!mm || (address < mm->physical_address) ||
+	    ((u64) address + length > (u64) mm->physical_address + mm->length)) {
+		/*
+		 * The request cannot be resolved by the current memory mapping.
+		 *
+		 * Look for an existing saved mapping covering the address range
+		 * at hand.  If found, save it as the current one and carry out
+		 * the access.
+		 */
+		for (mm = mem_info->first_mm; mm; mm = mm->next_mm) {
+			if (mm == mem_info->cur_mm)
+				continue;
+
+			if (address < mm->physical_address)
+				continue;
+
+			if ((u64) address + length >
+					(u64) mm->physical_address + mm->length)
+				continue;
+
+			mem_info->cur_mm = mm;
+			goto access;
+		}
+
+		/* Create a new mappings list entry */
+		mm = ACPI_ALLOCATE_ZEROED(sizeof(*mm));
+		if (!mm) {
+			ACPI_ERROR((AE_INFO,
+				    "Unable to save memory mapping at 0x%8.8X%8.8X, size %u",
+				    ACPI_FORMAT_UINT64(address), length));
+			return_ACPI_STATUS(AE_NO_MEMORY);
+		}
+
+		/*
+		 * October 2009: Attempt to map from the requested address to the
+		 * end of the region. However, we will never map more than one
+		 * page, nor will we cross a page boundary.
+		 */
+		map_length = (acpi_size)
+		    ((mem_info->address + mem_info->length) - address);
+
+		/*
+		 * If mapping the entire remaining portion of the region will cross
+		 * a page boundary, just map up to the page boundary, do not cross.
+		 * On some systems, crossing a page boundary while mapping regions
+		 * can cause warnings if the pages have different attributes
+		 * due to resource management.
+		 *
+		 * This has the added benefit of constraining a single mapping to
+		 * one page, which is similar to the original code that used a 4k
+		 * maximum window.
+		 */
+		page_boundary_map_length = (acpi_size)
+		    (ACPI_ROUND_UP(address, ACPI_DEFAULT_PAGE_SIZE) - address);
+		if (page_boundary_map_length == 0) {
+			page_boundary_map_length = ACPI_DEFAULT_PAGE_SIZE;
+		}
+
+		if (map_length > page_boundary_map_length) {
+			map_length = page_boundary_map_length;
+		}
+
+		/* Create a new mapping starting at the address given */
+
+		logical_addr_ptr = acpi_os_map_memory(address, map_length);
+		if (!logical_addr_ptr) {
+			ACPI_ERROR((AE_INFO,
+				    "Could not map memory at 0x%8.8X%8.8X, size %u",
+				    ACPI_FORMAT_UINT64(address),
+				    (u32)map_length));
+			ACPI_FREE(mm);
+			return_ACPI_STATUS(AE_NO_MEMORY);
+		}
+
+		/* Save the physical address and mapping size */
+
+		mm->logical_address = logical_addr_ptr;
+		mm->physical_address = address;
+		mm->length = map_length;
+
+		/*
+		 * Add the new entry to the mappigs list and save it as the
+		 * current mapping.
+		 */
+		mm->next_mm = mem_info->first_mm;
+		mem_info->first_mm = mm;
+
+		mem_info->cur_mm = mm;
+	}
+
+access:
+	/*
+	 * Generate a logical pointer corresponding to the address we want to
+	 * access
+	 */
+	logical_addr_ptr = mm->logical_address +
+		((u64) address - (u64) mm->physical_address);
+
+	ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+			  "System-Memory (width %u) R/W %u Address=%8.8X%8.8X\n",
+			  bit_width, function, ACPI_FORMAT_UINT64(address)));
+
+	/*
+	 * Perform the memory read or write
+	 *
+	 * Note: For machines that do not support non-aligned transfers, the target
+	 * address was checked for alignment above. We do not attempt to break the
+	 * transfer up into smaller (byte-size) chunks because the AML specifically
+	 * asked for a transfer width that the hardware may require.
+	 */
+	switch (function) {
+	case ACPI_READ:
+
+		*value = 0;
+		switch (bit_width) {
+		case 8:
+
+			*value = (u64)ACPI_GET8(logical_addr_ptr);
+			break;
+
+		case 16:
+
+			*value = (u64)ACPI_GET16(logical_addr_ptr);
+			break;
+
+		case 32:
+
+			*value = (u64)ACPI_GET32(logical_addr_ptr);
+			break;
+
+		case 64:
+
+			*value = (u64)ACPI_GET64(logical_addr_ptr);
+			break;
+
+		default:
+
+			/* bit_width was already validated */
+
+			break;
+		}
+		break;
+
+	case ACPI_WRITE:
+
+		switch (bit_width) {
+		case 8:
+
+			ACPI_SET8(logical_addr_ptr, *value);
+			break;
+
+		case 16:
+
+			ACPI_SET16(logical_addr_ptr, *value);
+			break;
+
+		case 32:
+
+			ACPI_SET32(logical_addr_ptr, *value);
+			break;
+
+		case 64:
+
+			ACPI_SET64(logical_addr_ptr, *value);
+			break;
+
+		default:
+
+			/* bit_width was already validated */
+
+			break;
+		}
+		break;
+
+	default:
+
+		status = AE_BAD_PARAMETER;
+		break;
+	}
+
+	return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_system_io_space_handler
+ *
+ * PARAMETERS:  function            - Read or Write operation
+ *              address             - Where in the space to read or write
+ *              bit_width           - Field width in bits (8, 16, or 32)
+ *              value               - Pointer to in or out value
+ *              handler_context     - Pointer to Handler's context
+ *              region_context      - Pointer to context specific to the
+ *                                    accessed region
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Handler for the System IO address space (Op Region)
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ex_system_io_space_handler(u32 function,
+				acpi_physical_address address,
+				u32 bit_width,
+				u64 *value,
+				void *handler_context, void *region_context)
+{
+	acpi_status status = AE_OK;
+	u32 value32;
+
+	ACPI_FUNCTION_TRACE(ex_system_io_space_handler);
+
+	ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+			  "System-IO (width %u) R/W %u Address=%8.8X%8.8X\n",
+			  bit_width, function, ACPI_FORMAT_UINT64(address)));
+
+	/* Decode the function parameter */
+
+	switch (function) {
+	case ACPI_READ:
+
+		status = acpi_hw_read_port((acpi_io_address)address,
+					   &value32, bit_width);
+		*value = value32;
+		break;
+
+	case ACPI_WRITE:
+
+		status = acpi_hw_write_port((acpi_io_address)address,
+					    (u32)*value, bit_width);
+		break;
+
+	default:
+
+		status = AE_BAD_PARAMETER;
+		break;
+	}
+
+	return_ACPI_STATUS(status);
+}
+
+#ifdef ACPI_PCI_CONFIGURED
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_pci_config_space_handler
+ *
+ * PARAMETERS:  function            - Read or Write operation
+ *              address             - Where in the space to read or write
+ *              bit_width           - Field width in bits (8, 16, or 32)
+ *              value               - Pointer to in or out value
+ *              handler_context     - Pointer to Handler's context
+ *              region_context      - Pointer to context specific to the
+ *                                    accessed region
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Handler for the PCI Config address space (Op Region)
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ex_pci_config_space_handler(u32 function,
+				 acpi_physical_address address,
+				 u32 bit_width,
+				 u64 *value,
+				 void *handler_context, void *region_context)
+{
+	acpi_status status = AE_OK;
+	struct acpi_pci_id *pci_id;
+	u16 pci_register;
+
+	ACPI_FUNCTION_TRACE(ex_pci_config_space_handler);
+
+	/*
+	 *  The arguments to acpi_os(Read|Write)pci_configuration are:
+	 *
+	 *  pci_segment is the PCI bus segment range 0-31
+	 *  pci_bus     is the PCI bus number range 0-255
+	 *  pci_device  is the PCI device number range 0-31
+	 *  pci_function is the PCI device function number
+	 *  pci_register is the Config space register range 0-255 bytes
+	 *
+	 *  value - input value for write, output address for read
+	 *
+	 */
+	pci_id = (struct acpi_pci_id *)region_context;
+	pci_register = (u16) (u32) address;
+
+	ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+			  "Pci-Config %u (%u) Seg(%04x) Bus(%04x) "
+			  "Dev(%04x) Func(%04x) Reg(%04x)\n",
+			  function, bit_width, pci_id->segment, pci_id->bus,
+			  pci_id->device, pci_id->function, pci_register));
+
+	switch (function) {
+	case ACPI_READ:
+
+		*value = 0;
+		status =
+		    acpi_os_read_pci_configuration(pci_id, pci_register, value,
+						   bit_width);
+		break;
+
+	case ACPI_WRITE:
+
+		status =
+		    acpi_os_write_pci_configuration(pci_id, pci_register,
+						    *value, bit_width);
+		break;
+
+	default:
+
+		status = AE_BAD_PARAMETER;
+		break;
+	}
+
+	return_ACPI_STATUS(status);
+}
+#endif
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_cmos_space_handler
+ *
+ * PARAMETERS:  function            - Read or Write operation
+ *              address             - Where in the space to read or write
+ *              bit_width           - Field width in bits (8, 16, or 32)
+ *              value               - Pointer to in or out value
+ *              handler_context     - Pointer to Handler's context
+ *              region_context      - Pointer to context specific to the
+ *                                    accessed region
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Handler for the CMOS address space (Op Region)
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ex_cmos_space_handler(u32 function,
+			   acpi_physical_address address,
+			   u32 bit_width,
+			   u64 *value,
+			   void *handler_context, void *region_context)
+{
+	acpi_status status = AE_OK;
+
+	ACPI_FUNCTION_TRACE(ex_cmos_space_handler);
+
+	return_ACPI_STATUS(status);
+}
+
+#ifdef ACPI_PCI_CONFIGURED
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_pci_bar_space_handler
+ *
+ * PARAMETERS:  function            - Read or Write operation
+ *              address             - Where in the space to read or write
+ *              bit_width           - Field width in bits (8, 16, or 32)
+ *              value               - Pointer to in or out value
+ *              handler_context     - Pointer to Handler's context
+ *              region_context      - Pointer to context specific to the
+ *                                    accessed region
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Handler for the PCI bar_target address space (Op Region)
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ex_pci_bar_space_handler(u32 function,
+			      acpi_physical_address address,
+			      u32 bit_width,
+			      u64 *value,
+			      void *handler_context, void *region_context)
+{
+	acpi_status status = AE_OK;
+
+	ACPI_FUNCTION_TRACE(ex_pci_bar_space_handler);
+
+	return_ACPI_STATUS(status);
+}
+#endif
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_data_table_space_handler
+ *
+ * PARAMETERS:  function            - Read or Write operation
+ *              address             - Where in the space to read or write
+ *              bit_width           - Field width in bits (8, 16, or 32)
+ *              value               - Pointer to in or out value
+ *              handler_context     - Pointer to Handler's context
+ *              region_context      - Pointer to context specific to the
+ *                                    accessed region
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Handler for the Data Table address space (Op Region)
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ex_data_table_space_handler(u32 function,
+				 acpi_physical_address address,
+				 u32 bit_width,
+				 u64 *value,
+				 void *handler_context, void *region_context)
+{
+	ACPI_FUNCTION_TRACE(ex_data_table_space_handler);
+
+	/*
+	 * Perform the memory read or write. The bit_width was already
+	 * validated.
+	 */
+	switch (function) {
+	case ACPI_READ:
+
+		memcpy(ACPI_CAST_PTR(char, value),
+		       ACPI_PHYSADDR_TO_PTR(address), ACPI_DIV_8(bit_width));
+		break;
+
+	case ACPI_WRITE:
+
+		memcpy(ACPI_PHYSADDR_TO_PTR(address),
+		       ACPI_CAST_PTR(char, value), ACPI_DIV_8(bit_width));
+		break;
+
+	default:
+
+		return_ACPI_STATUS(AE_BAD_PARAMETER);
+	}
+
+	return_ACPI_STATUS(AE_OK);
+}