From: Michael Brown <mcb30@ipxe.org>
Date: Wed, 5 Nov 2025 17:39:43 +0000 (+0000)
Subject: [acpi] Allow acpi_ioremap() to map a port I/O address
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=6d9374e5a39337ff755f0e425fb987e6c672d151;p=thirdparty%2Fipxe.git

[acpi] Allow acpi_ioremap() to map a port I/O address

Assume that on any platforms where port I/O is used (i.e. x86), a port
I/O address may be used directly for the combined MMIO and port I/O
accessors without requiring an explicit mapping operation.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
---

diff --git a/src/core/acpi.c b/src/core/acpi.c
index fa8ed34ff..3fbf25bd1 100644
--- a/src/core/acpi.c
+++ b/src/core/acpi.c
@@ -272,6 +272,8 @@ void * acpi_ioremap ( struct acpi_address *address, size_t len ) {
 	switch ( address->type ) {
 	case ACPI_ADDRESS_TYPE_MEM:
 		return ioremap ( base, len );
+	case ACPI_ADDRESS_TYPE_IO:
+		return ( ( void * ) base );
 	default:
 		return NULL;
 	}