mirror of
https://review.coreboot.org/flashrom.git
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hwaccess_x86_io: clean header concept
Move all function implementations into the .c file TEST: `[g]make [WARNERROR=no]` on Linux, FreeBSD, NetBSD, OpenBSD, DragonflyBSD, OpenIndiana, Debian-GNU/Hurd Change-Id: I1400704e9ac5fed00c096796536108d5bfb875e3 Signed-off-by: Thomas Heijligen <thomas.heijligen@secunet.com> Reviewed-on: https://review.coreboot.org/c/flashrom/+/61276 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de>
This commit is contained in:
Thomas Heijligen
Nico Huber
parent
60c3b61d09
commit
0f51f62c62
19
Makefile
19
Makefile
@ -365,25 +365,6 @@ ifneq ($(ARCH), $(filter $(ARCH), x86 mips ppc arm sparc arc))
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$(call mark_unsupported,$(DEPENDS_ON_RAW_MEM_ACCESS))
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endif
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ifeq ($(TARGET_OS), $(filter $(TARGET_OS), Linux Darwin NetBSD OpenBSD))
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FEATURE_FLAGS += -D'USE_IOPL=1'
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else
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FEATURE_FLAGS += -D'USE_IOPL=0'
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endif
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ifeq ($(TARGET_OS), $(filter $(TARGET_OS), FreeBSD FreeBSD-glibc DragonFlyBSD))
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FEATURE_FLAGS += -D'USE_DEV_IO=1'
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else
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FEATURE_FLAGS += -D'USE_DEV_IO=0'
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endif
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ifeq ($(TARGET_OS), $(filter $(TARGET_OS), Hurd))
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FEATURE_FLAGS += -D'USE_IOPERM=1'
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else
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FEATURE_FLAGS += -D'USE_IOPERM=0'
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endif
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###############################################################################
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# Flash chip drivers and bus support infrastructure.
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@ -17,12 +17,25 @@
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*/
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/*
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* This file implements x86 I/O port permission handling.
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* This file implements x86 I/O port permission and access handling.
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*
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* For this purpose the platform specific code is encapsuled in two functions
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* and compiled only on the respective platform. `platform_get_io_perms()` is
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* called to get the permissions and `platform_release_io_perms()` is called for
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* releasing those.
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* The first part of the file defines the platform dependend implementations to
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* use on each platform. For getting I/O permissions set IO_PORT_PERMISSION to
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* one of:
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* - USE_DUMMY
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* - USE_SUN
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* - USE_DEVICE
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* - USE_IOPERM
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* - USE_IOPL
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* For the IN[B/W/L] and OUT[B/W/L] functions set IO_PORT_FUNCTION to one of:
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* - USE_LIBC_TARGET_LAST
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* - USE_LIBC_TARGET_FIRST
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* - USE_DOS
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* - USE_ASM
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*
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* The platform specific code for getting I/O permissions consists of two
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* functions. `platform_get_io_perms()` is called to get
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* permissions and `platform_release_io_perms()` is called for releasing those.
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*/
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#include <errno.h>
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@ -31,7 +44,126 @@
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#include "flash.h"
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#include "hwaccess_x86_io.h"
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#if defined(__DJGPP__) || defined(__LIBPAYLOAD) /* DJGPP, libpayload */
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/* IO_PORT_FUNCTION */
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#define USE_LIBC_TARGET_LAST 1
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#define USE_LIBC_TARGET_FIRST 2
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#define USE_ASM 3
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#define USE_DOS 4
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/* IO_PORT_PERMISSION */
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#define USE_IOPL 5
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#define USE_DEVICE 6
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#define USE_DUMMY 7
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#define USE_SUN 8
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#define USE_IOPERM 9
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#if defined(__ANDROID__)
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#include <sys/glibc-syscalls.h>
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#define IO_PORT_PERMISSION USE_IOPL
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#define IO_PORT_FUNCTION USE_LIBC_TARGET_LAST
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#endif
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#if defined(__linux__) && !defined(__ANDROID__)
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#include <sys/io.h>
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#define IO_PORT_PERMISSION USE_IOPL
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#define IO_PORT_FUNCTION USE_LIBC_TARGET_LAST
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#endif
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#if defined(__FreeBSD_kernel) && defined(__GLIBC__)
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#include <sys/io.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#include <unistd.h>
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#define IO_PORT_PERMISSION USE_DEVICE
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#define IO_PORT_FUNCTION USE_LIBC_TARGET_LAST
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#endif
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#if defined(__FreeBSD__) || defined(__DragonFly__)
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#include <sys/types.h>
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#include <machine/cpufunc.h>
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#include <fcntl.h>
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#include <unistd.h>
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#define IO_PORT_PERMISSION USE_DEVICE
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#define IO_PORT_FUNCTION USE_LIBC_TARGET_FIRST
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#endif
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#if defined(__NetBSD__)
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#include <sys/types.h>
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#include <machine/sysarch.h>
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#if defined(__i386__)
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#define iopl i386_iopl
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#elif defined(__x86_64__)
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#define iopl x86_64_iopl
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#endif
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#define IO_PORT_PERMISSION USE_IOPL
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#define IO_PORT_FUNCTION USE_ASM
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#endif
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#if defined(__OpenBSD__)
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#include <sys/types.h>
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#include <machine/sysarch.h>
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#if defined(__i386__)
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#define iopl i386_iopl
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#elif defined(__amd64__)
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#define iopl amd64_iopl
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#endif
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#define IO_PORT_PERMISSION USE_IOPL
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#define IO_PORT_FUNCTION USE_ASM
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#endif
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#if defined(__MACH__) && defined(__APPLE__)
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#include <DirectHW/DirectHW.h>
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#define IO_PORT_PERMISSION USE_IOPL
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#define IO_PORT_FUNCTION USE_LIBC_TARGET_LAST
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#endif
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#if defined(__DJGPP__)
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#include <pc.h>
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#define IO_PORT_PERMISSION USE_DUMMY
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#define IO_PORT_FUNCTION USE_DOS
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#endif
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#if defined(__LIBPAYLOAD__)
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#define IO_PORT_PERMISSION USE_DUMMY
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#define IO_PORT_FUNCTION USE_LIBC_TARGET_LAST
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#endif
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#if defined(__sun)
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#include <sys/sysi86.h>
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#include <sys/psw.h>
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#include <asm/sunddi.h>
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#define IO_PORT_PERMISSION USE_SUN
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#define IO_PORT_FUNCTION USE_LIBC_TARGET_FIRST
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#endif
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#if defined(__gnu_hurd__)
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#include <sys/io.h>
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#define IO_PORT_PERMISSION USE_IOPERM
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#define IO_PORT_FUNCTION USE_LIBC_TARGET_LAST
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#endif
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/* Make sure IO_PORT_PERMISSION and IO_PORT_FUNCTION are set */
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#if IO_PORT_PERMISSION == 0 || IO_PORT_FUNCTION == 0
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#error Unsupported or misconfigured platform.
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#endif
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/*
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* USE_DUMMY
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* This is for platforms which have no privilege levels.
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*/
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#if IO_PORT_PERMISSION == USE_DUMMY
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static int platform_get_io_perms(void)
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{
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return 0;
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@ -43,9 +175,11 @@ static int platform_release_io_perms(void *p)
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}
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#endif
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#if defined(__sun) /* SunOS */
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#include <sys/sysi86.h>
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/*
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* USE_SUN
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* This implementation uses SunOS system call sysi86 to handle I/O port permissions.
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*/
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#if IO_PORT_PERMISSION == USE_SUN
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static int platform_get_io_perms(void)
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{
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return sysi86(SI86V86, V86SC_IOPL, PS_IOPL);
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@ -58,10 +192,11 @@ static int platform_release_io_perms(void *p)
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}
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#endif
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#if USE_DEV_IO /* FreeBSD, DragonFlyBSD */
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#include <fcntl.h>
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#include <unistd.h>
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/*
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* USE_DEVICE
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* This implementation uses the virtual /dev/io file to handle I/O Port permissions.
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*/
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#if IO_PORT_PERMISSION == USE_DEVICE
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int io_fd;
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static int platform_get_io_perms(void)
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@ -77,9 +212,11 @@ static int platform_release_io_perms(void *p)
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}
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#endif
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#if USE_IOPERM /* GNU Hurd */
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#include <sys/io.h>
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/*
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* USE_IOPERM
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* This implementation uses the ioperm system call to handle I/O port permissions.
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*/
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#if IO_PORT_PERMISSION == USE_IOPERM
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static int platform_get_io_perms(void)
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{
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return ioperm(0, 65536, 1);
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@ -92,7 +229,11 @@ static int platform_release_io_perms(void *p)
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}
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#endif
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#if USE_IOPL /* Linux, Darwin, NetBSD, OpenBSD */
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/*
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* USE_IOPL
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* This implementation uses the iopl system call to handle I/O port permissions.
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*/
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#if IO_PORT_PERMISSION == USE_IOPL
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static int platform_get_io_perms(void)
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{
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return iopl(3);
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@ -129,3 +270,145 @@ int rget_io_perms(void)
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"that your kernel configuration has the option INSECURE enabled.\n");
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return 1;
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}
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/*
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* USE_LIBC_LAST
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* This implementation wraps the glibc functions with the port as 2nd argument.
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*/
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#if IO_PORT_FUNCTION == USE_LIBC_TARGET_LAST
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void OUTB(uint8_t value, uint16_t port)
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{
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outb(value, port);
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}
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void OUTW(uint16_t value, uint16_t port)
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{
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outw(value, port);
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}
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void OUTL(uint32_t value, uint16_t port)
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{
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outl(value, port);
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}
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#endif
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/*
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* USE_LIBC_FIRST
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* This implementation uses libc based functions with the port as first argument
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* like on BSDs.
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*/
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#if IO_PORT_FUNCTION == USE_LIBC_TARGET_FIRST
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void OUTB(uint8_t value, uint16_t port)
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{
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outb(port, value);
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}
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void OUTW(uint16_t value, uint16_t port)
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{
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outw(port, value);
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}
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void OUTL(uint32_t value, uint16_t port)
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{
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outl(port, value);
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}
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#endif
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/*
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* LIBC_xxx
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* INx functions can be shared between _LAST and _FIRST
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*/
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#if IO_PORT_FUNCTION == USE_LIBC_TARGET_LAST || IO_PORT_FUNCTION == USE_LIBC_TARGET_FIRST
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uint8_t INB(uint16_t port)
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{
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return inb(port);
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}
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uint16_t INW(uint16_t port)
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{
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return inw(port);
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}
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uint32_t INL(uint16_t port)
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{
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return inl(port);
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}
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#endif
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/*
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* USE_DOS
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* DOS provides the functions under a differnt name.
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*/
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#if IO_PORT_FUNCTION == USE_DOS
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void OUTB(uint8_t value, uint16_t port)
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{
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outportb(port, value);
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}
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void OUTW(uint16_t value, uint16_t port)
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{
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outportw(port, value);
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}
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void OUTL(uint32_t value, uint16_t port)
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{
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outportl(port, value);
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}
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uint8_t INB(uint16_t port)
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{
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return inportb(port);
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}
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uint16_t INW(uint16_t port)
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{
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return inportw(port);
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}
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uint32_t INL(uint16_t port)
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{
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return inportl(port);
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}
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#endif
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/*
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* USE_ASM
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* Pure assembly implementation.
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*/
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#if IO_PORT_FUNCTION == USE_ASM
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void OUTB(uint8_t value, uint16_t port)
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{
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__asm__ volatile ("outb %b0,%w1": :"a" (value), "Nd" (port));
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}
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void OUTW(uint16_t value, uint16_t port)
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{
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__asm__ volatile ("outw %w0,%w1": :"a" (value), "Nd" (port));
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}
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void OUTL(uint32_t value, uint16_t port)
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{
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__asm__ volatile ("outl %0,%w1": :"a" (value), "Nd" (port));
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}
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uint8_t INB(uint16_t port)
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{
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uint8_t value;
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__asm__ volatile ("inb %w1,%0":"=a" (value):"Nd" (port));
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return value;
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}
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uint16_t INW(uint16_t port)
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{
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uint16_t value;
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__asm__ volatile ("inw %w1,%0":"=a" (value):"Nd" (port));
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return value;
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}
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uint32_t INL(uint16_t port)
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{
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uint32_t value;
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__asm__ volatile ("inl %1,%0":"=a" (value):"Nd" (port));
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return value;
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}
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#endif
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@ -2,6 +2,8 @@
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* This file is part of the flashrom project.
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*
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* Copyright (C) 2009 Carl-Daniel Hailfinger
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* Copyright (C) 2022 secunet Security Networks AG
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* (Written by Thomas Heijligen <thomas.heijligen@secunet.com)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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@ -13,144 +15,23 @@
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* GNU General Public License for more details.
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*/
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/*
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* This file contains prototypes for x86 I/O Port access.
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*/
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#ifndef __HWACCESS_X86_IO_H__
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#define __HWACCESS_X86_IO_H__ 1
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/* sys/io.h provides iopl(2) and x86 I/O port access functions (inb, outb etc).
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* It is included in glibc (thus available also on debian/kFreeBSD) but also in other libcs that mimic glibc,
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* e.g. musl and uclibc. Because we cannot detect the libc or existence of the header or of the instructions
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* themselves safely in here we use some heuristic below:
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* On Android we don't have the header file and no way for I/O port access at all. However, sys/glibc-syscalls.h
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* refers to an iopl implementation and we therefore include at least that one for now. On non-Android we assume
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* that a Linux system's libc has a suitable sys/io.h or (on non-Linux) we depend on glibc to offer it. */
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#if defined(__ANDROID__)
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#include <sys/glibc-syscalls.h>
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#elif defined(__linux__) || defined(__GLIBC__)
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#include <sys/io.h>
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#endif
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/* for iopl and outb under Solaris */
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#if defined (__sun)
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#include <sys/sysi86.h>
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#include <sys/psw.h>
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#include <asm/sunddi.h>
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#endif
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#include <stdint.h>
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/**
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*/
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int rget_io_perms(void);
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/* Clarification about OUTB/OUTW/OUTL argument order:
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* OUT[BWL](val, port)
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*/
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#if defined(__FreeBSD__) || defined(__DragonFly__)
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/* Note that Debian/kFreeBSD (FreeBSD kernel with glibc) has conflicting
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* out[bwl] definitions in machine/cpufunc.h and sys/io.h at least in some
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* versions. Use machine/cpufunc.h only for plain FreeBSD/DragonFlyBSD.
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*/
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#include <sys/types.h>
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#include <machine/cpufunc.h>
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#define OUTB(x, y) do { u_int outb_tmp = (y); outb(outb_tmp, (x)); } while (0)
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#define OUTW(x, y) do { u_int outw_tmp = (y); outw(outw_tmp, (x)); } while (0)
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#define OUTL(x, y) do { u_int outl_tmp = (y); outl(outl_tmp, (x)); } while (0)
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#define INB(x) __extension__ ({ u_int inb_tmp = (x); inb(inb_tmp); })
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#define INW(x) __extension__ ({ u_int inw_tmp = (x); inw(inw_tmp); })
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#define INL(x) __extension__ ({ u_int inl_tmp = (x); inl(inl_tmp); })
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#else
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#if defined (__sun)
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/* Note different order for outb */
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#define OUTB(x,y) outb(y, x)
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#define OUTW(x,y) outw(y, x)
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#define OUTL(x,y) outl(y, x)
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#define INB inb
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#define INW inw
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#define INL inl
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#else
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#ifdef __DJGPP__
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#include <pc.h>
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#define OUTB(x,y) outportb(y, x)
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#define OUTW(x,y) outportw(y, x)
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#define OUTL(x,y) outportl(y, x)
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#define INB inportb
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#define INW inportw
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||||
#define INL inportl
|
||||
|
||||
#else
|
||||
|
||||
#if defined(__MACH__) && defined(__APPLE__)
|
||||
/* Header is part of the DirectHW library. */
|
||||
#include <DirectHW/DirectHW.h>
|
||||
#endif
|
||||
|
||||
/* This is the usual glibc interface. */
|
||||
#define OUTB outb
|
||||
#define OUTW outw
|
||||
#define OUTL outl
|
||||
#define INB inb
|
||||
#define INW inw
|
||||
#define INL inl
|
||||
#endif
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#if defined(__NetBSD__) || defined (__OpenBSD__)
|
||||
#if defined(__i386__) || defined(__x86_64__)
|
||||
#include <sys/types.h>
|
||||
#include <machine/sysarch.h>
|
||||
#if defined(__NetBSD__)
|
||||
#if defined(__i386__)
|
||||
#define iopl i386_iopl
|
||||
#elif defined(__x86_64__)
|
||||
#define iopl x86_64_iopl
|
||||
#endif
|
||||
#elif defined (__OpenBSD__)
|
||||
#if defined(__i386__)
|
||||
#define iopl i386_iopl
|
||||
#elif defined(__amd64__)
|
||||
#define iopl amd64_iopl
|
||||
#endif
|
||||
#endif
|
||||
|
||||
static inline void outb(uint8_t value, uint16_t port)
|
||||
{
|
||||
__asm__ volatile ("outb %b0,%w1": :"a" (value), "Nd" (port));
|
||||
}
|
||||
|
||||
static inline uint8_t inb(uint16_t port)
|
||||
{
|
||||
uint8_t value;
|
||||
__asm__ volatile ("inb %w1,%0":"=a" (value):"Nd" (port));
|
||||
return value;
|
||||
}
|
||||
|
||||
static inline void outw(uint16_t value, uint16_t port)
|
||||
{
|
||||
__asm__ volatile ("outw %w0,%w1": :"a" (value), "Nd" (port));
|
||||
}
|
||||
|
||||
static inline uint16_t inw(uint16_t port)
|
||||
{
|
||||
uint16_t value;
|
||||
__asm__ volatile ("inw %w1,%0":"=a" (value):"Nd" (port));
|
||||
return value;
|
||||
}
|
||||
|
||||
static inline void outl(uint32_t value, uint16_t port)
|
||||
{
|
||||
__asm__ volatile ("outl %0,%w1": :"a" (value), "Nd" (port));
|
||||
}
|
||||
|
||||
static inline uint32_t inl(uint16_t port)
|
||||
{
|
||||
uint32_t value;
|
||||
__asm__ volatile ("inl %1,%0":"=a" (value):"Nd" (port));
|
||||
return value;
|
||||
}
|
||||
#endif
|
||||
#endif
|
||||
void OUTB(uint8_t value, uint16_t port);
|
||||
void OUTW(uint16_t value, uint16_t port);
|
||||
void OUTL(uint32_t value, uint16_t port);
|
||||
uint8_t INB(uint16_t port);
|
||||
uint16_t INW(uint16_t port);
|
||||
uint32_t INL(uint16_t port);
|
||||
|
||||
#endif /* __HWACCESS_X86_IO_H__ */
|
||||
|
||||
18
meson.build
18
meson.build
@ -42,24 +42,6 @@ else
|
||||
add_project_arguments('-DIS_WINDOWS=0', language : 'c')
|
||||
endif
|
||||
|
||||
if host_machine.system() in ['linux', 'darwin', 'netbsd', 'openbsd']
|
||||
add_project_arguments('-DUSE_IOPL=1', language : 'c')
|
||||
else
|
||||
add_project_arguments('-DUSE_IOPL=0', language : 'c')
|
||||
endif
|
||||
|
||||
if host_machine.system() in ['freebsd', 'dragonfly']
|
||||
add_project_arguments('-DUSE_DEV_IO=1', language : 'c')
|
||||
else
|
||||
add_project_arguments('-DUSE_DEV_IO=0', language : 'c')
|
||||
endif
|
||||
|
||||
if host_machine.system() in ['gnu']
|
||||
add_project_arguments('-DUSE_IOPERM=1', language : 'c')
|
||||
else
|
||||
add_project_arguments('-DUSE_IOPERM=0', language : 'c')
|
||||
endif
|
||||
|
||||
# get defaults from configure
|
||||
config_atahpt = get_option('config_atahpt')
|
||||
config_atapromise = get_option('config_atapromise')
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user