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diff --git a/sys/compat/linuxkpi/common/include/linux/aperture.h b/sys/compat/linuxkpi/common/include/linux/aperture.h
--- a/sys/compat/linuxkpi/common/include/linux/aperture.h
+++ b/sys/compat/linuxkpi/common/include/linux/aperture.h
@@ -16,7 +16,9 @@
resource_size_t size);
int aperture_remove_conflicting_devices(resource_size_t base, resource_size_t size,
- bool primary, const char *name);
+ const char *name);
+
+int __aperture_remove_legacy_vga_devices(struct pci_dev *pdev);
int aperture_remove_conflicting_pci_devices(struct pci_dev *pdev, const char *name);
#else
@@ -28,7 +30,12 @@
}
static inline int aperture_remove_conflicting_devices(resource_size_t base, resource_size_t size,
- bool primary, const char *name)
+ const char *name)
+{
+ return 0;
+}
+
+static inline int __aperture_remove_legacy_vga_devices(struct pci_dev *pdev)
{
return 0;
}
@@ -41,7 +48,6 @@
/**
* aperture_remove_all_conflicting_devices - remove all existing framebuffers
- * @primary: also kick vga16fb if present; only relevant for VGA devices
* @name: a descriptive name of the requesting driver
*
* This function removes all graphics device drivers. Use this function on systems
@@ -50,9 +56,9 @@
* Returns:
* 0 on success, or a negative errno code otherwise
*/
-static inline int aperture_remove_all_conflicting_devices(bool primary, const char *name)
+static inline int aperture_remove_all_conflicting_devices(const char *name)
{
- return aperture_remove_conflicting_devices(0, (resource_size_t)-1, primary, name);
+ return aperture_remove_conflicting_devices(0, (resource_size_t)-1, name);
}
#endif
diff --git a/sys/compat/linuxkpi/common/include/linux/hdmi.h b/sys/compat/linuxkpi/common/include/linux/hdmi.h
--- a/sys/compat/linuxkpi/common/include/linux/hdmi.h
+++ b/sys/compat/linuxkpi/common/include/linux/hdmi.h
@@ -170,19 +170,19 @@
enum hdmi_infoframe_type type;
unsigned char version;
unsigned char length;
+ bool itc;
+ unsigned char pixel_repeat;
enum hdmi_colorspace colorspace;
enum hdmi_scan_mode scan_mode;
enum hdmi_colorimetry colorimetry;
enum hdmi_picture_aspect picture_aspect;
enum hdmi_active_aspect active_aspect;
- bool itc;
enum hdmi_extended_colorimetry extended_colorimetry;
enum hdmi_quantization_range quantization_range;
enum hdmi_nups nups;
unsigned char video_code;
enum hdmi_ycc_quantization_range ycc_quantization_range;
enum hdmi_content_type content_type;
- unsigned char pixel_repeat;
unsigned short top_bar;
unsigned short bottom_bar;
unsigned short left_bar;
@@ -336,7 +336,14 @@
void *buffer, size_t size);
ssize_t hdmi_audio_infoframe_pack_only(const struct hdmi_audio_infoframe *frame,
void *buffer, size_t size);
-int hdmi_audio_infoframe_check(struct hdmi_audio_infoframe *frame);
+int hdmi_audio_infoframe_check(const struct hdmi_audio_infoframe *frame);
+
+#ifdef __linux__
+struct dp_sdp;
+ssize_t
+hdmi_audio_infoframe_pack_for_dp(const struct hdmi_audio_infoframe *frame,
+ struct dp_sdp *sdp, u8 dp_version);
+#endif
enum hdmi_3d_structure {
HDMI_3D_STRUCTURE_INVALID = -1,
diff --git a/sys/compat/linuxkpi/common/include/video/cmdline.h b/sys/compat/linuxkpi/common/include/video/cmdline.h
new file mode 100644
--- /dev/null
+++ b/sys/compat/linuxkpi/common/include/video/cmdline.h
@@ -0,0 +1,44 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2023 Serenity Cyber Security, LLC.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _VIDEO_CMDLINE_H_
+#define _VIDEO_CMDLINE_H_
+
+#include <linux/types.h>
+
+#define CONFIG_VIDEO_CMDLINE
+
+#if defined(CONFIG_VIDEO_CMDLINE)
+const char *video_get_options(const char *name);
+#else
+static inline const char *
+video_get_options(const char *name)
+{
+ return (NULL);
+}
+#endif
+#endif /* _VIDEO_CMDLINE_H_ */
diff --git a/sys/compat/linuxkpi/common/src/linux_aperture.c b/sys/compat/linuxkpi/common/src/linux_aperture.c
--- a/sys/compat/linuxkpi/common/src/linux_aperture.c
+++ b/sys/compat/linuxkpi/common/src/linux_aperture.c
@@ -20,7 +20,7 @@
* driver can be active at any given time. Many systems load a generic
* graphics drivers, such as EFI-GOP or VESA, early during the boot process.
* During later boot stages, they replace the generic driver with a dedicated,
- * hardware-specific driver. To take over the device the dedicated driver
+ * hardware-specific driver. To take over the device, the dedicated driver
* first has to remove the generic driver. Aperture functions manage
* ownership of framebuffer memory and hand-over between drivers.
*
@@ -43,7 +43,7 @@
* base = mem->start;
* size = resource_size(mem);
*
- * ret = aperture_remove_conflicting_devices(base, size, false, "example");
+ * ret = aperture_remove_conflicting_devices(base, size, "example");
* if (ret)
* return ret;
*
@@ -76,7 +76,7 @@
* generic EFI or VESA drivers, have to register themselves as owners of their
* framebuffer apertures. Ownership of the framebuffer memory is achieved
* by calling devm_aperture_acquire_for_platform_device(). If successful, the
- * driveris the owner of the framebuffer range. The function fails if the
+ * driver is the owner of the framebuffer range. The function fails if the
* framebuffer is already owned by another driver. See below for an example.
*
* .. code-block:: c
@@ -126,7 +126,7 @@
* et al for the registered framebuffer range, the aperture helpers call
* platform_device_unregister() and the generic driver unloads itself. The
* generic driver also has to provide a remove function to make this work.
- * Once hot unplugged fro mhardware, it may not access the device's
+ * Once hot unplugged from hardware, it may not access the device's
* registers, framebuffer memory, ROM, etc afterwards.
*/
@@ -203,7 +203,7 @@
/*
* Remove the device from the device hierarchy. This is the right thing
- * to do for firmware-based DRM drivers, such as EFI, VESA or VGA. After
+ * to do for firmware-based fb drivers, such as EFI, VESA or VGA. After
* the new driver takes over the hardware, the firmware device's state
* will be lost.
*
@@ -274,7 +274,6 @@
* aperture_remove_conflicting_devices - remove devices in the given range
* @base: the aperture's base address in physical memory
* @size: aperture size in bytes
- * @primary: also kick vga16fb if present; only relevant for VGA devices
* @name: a descriptive name of the requesting driver
*
* This function removes devices that own apertures within @base and @size.
@@ -283,7 +282,7 @@
* 0 on success, or a negative errno code otherwise
*/
int aperture_remove_conflicting_devices(resource_size_t base, resource_size_t size,
- bool primary, const char *name)
+ const char *name)
{
/*
* If a driver asked to unregister a platform device registered by
@@ -300,18 +299,45 @@
aperture_detach_devices(base, size);
- /*
- * If this is the primary adapter, there could be a VGA device
- * that consumes the VGA framebuffer I/O range. Remove this device
- * as well.
- */
- if (primary)
- aperture_detach_devices(VGA_FB_PHYS_BASE, VGA_FB_PHYS_SIZE);
-
return 0;
}
EXPORT_SYMBOL(aperture_remove_conflicting_devices);
+/**
+ * __aperture_remove_legacy_vga_devices - remove legacy VGA devices of a PCI devices
+ * @pdev: PCI device
+ *
+ * This function removes VGA devices provided by @pdev, such as a VGA
+ * framebuffer or a console. This is useful if you have a VGA-compatible
+ * PCI graphics device with framebuffers in non-BAR locations. Drivers
+ * should acquire ownership of those memory areas and afterwards call
+ * this helper to release remaining VGA devices.
+ *
+ * If your hardware has its framebuffers accessible via PCI BARS, use
+ * aperture_remove_conflicting_pci_devices() instead. The function will
+ * release any VGA devices automatically.
+ *
+ * WARNING: Apparently we must remove graphics drivers before calling
+ * this helper. Otherwise the vga fbdev driver falls over if
+ * we have vgacon configured.
+ *
+ * Returns:
+ * 0 on success, or a negative errno code otherwise
+ */
+int __aperture_remove_legacy_vga_devices(struct pci_dev *pdev)
+{
+ /* VGA framebuffer */
+ aperture_detach_devices(VGA_FB_PHYS_BASE, VGA_FB_PHYS_SIZE);
+
+ /* VGA textmode console */
+#ifdef __linux__
+ return vga_remove_vgacon(pdev);
+#elif defined(__FreeBSD__)
+ return 0;
+#endif
+}
+EXPORT_SYMBOL(__aperture_remove_legacy_vga_devices);
+
/**
* aperture_remove_conflicting_pci_devices - remove existing framebuffers for PCI devices
* @pdev: PCI device
@@ -328,14 +354,14 @@
{
bool primary = false;
resource_size_t base, size;
- int bar, ret;
+ int bar, ret = 0;
-#ifdef CONFIG_X86
#ifdef __linux__
- primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
-#elif defined(__FreeBSD__)
- primary = NULL;
-#endif
+ if (pdev == vga_default_device())
+ primary = true;
+
+ if (primary)
+ sysfb_disable();
#endif
for (bar = 0; bar < PCI_STD_NUM_BARS; ++bar) {
@@ -344,22 +370,18 @@
base = pci_resource_start(pdev, bar);
size = pci_resource_len(pdev, bar);
- ret = aperture_remove_conflicting_devices(base, size, primary, name);
- if (ret)
- return ret;
+ aperture_detach_devices(base, size);
}
/*
- * WARNING: Apparently we must kick fbdev drivers before vgacon,
- * otherwise the vga fbdev driver falls over.
+ * If this is the primary adapter, there could be a VGA device
+ * that consumes the VGA framebuffer I/O range. Remove this
+ * device as well.
*/
-#ifdef __linux__
- ret = vga_remove_vgacon(pdev);
- if (ret)
- return ret;
-#endif
+ if (primary)
+ ret = __aperture_remove_legacy_vga_devices(pdev);
- return 0;
+ return ret;
}
EXPORT_SYMBOL(aperture_remove_conflicting_pci_devices);
diff --git a/sys/compat/linuxkpi/common/src/linux_cmdline.c b/sys/compat/linuxkpi/common/src/linux_cmdline.c
new file mode 100644
--- /dev/null
+++ b/sys/compat/linuxkpi/common/src/linux_cmdline.c
@@ -0,0 +1,63 @@
+/*-
+ * Copyright (c) 2022 Beckhoff Automation GmbH & Co. KG
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+
+#include <video/cmdline.h>
+
+const char *
+video_get_options(const char *connector_name)
+{
+ char tunable[64];
+ const char *options;
+
+ /*
+ * A user may use loader tunables to set a specific mode for the
+ * console. Tunables are read in the following order:
+ * 1. kern.vt.fb.modes.$connector_name
+ * 2. kern.vt.fb.default_mode
+ *
+ * Example of a mode specific to the LVDS connector:
+ * kern.vt.fb.modes.LVDS="1024x768"
+ *
+ * Example of a mode applied to all connectors not having a
+ * connector-specific mode:
+ * kern.vt.fb.default_mode="640x480"
+ */
+ snprintf(tunable, sizeof(tunable), "kern.vt.fb.modes.%s",
+ connector_name);
+ if (bootverbose) {
+ printf("[drm] Connector %s: get mode from tunables:\n", connector_name);
+ printf("[drm] - %s\n", tunable);
+ printf("[drm] - kern.vt.fb.default_mode\n");
+ }
+ options = kern_getenv(tunable);
+ if (options == NULL)
+ options = kern_getenv("kern.vt.fb.default_mode");
+
+ return (options);
+}
diff --git a/sys/compat/linuxkpi/common/src/linux_hdmi.c b/sys/compat/linuxkpi/common/src/linux_hdmi.c
--- a/sys/compat/linuxkpi/common/src/linux_hdmi.c
+++ b/sys/compat/linuxkpi/common/src/linux_hdmi.c
@@ -21,6 +21,9 @@
* DEALINGS IN THE SOFTWARE.
*/
+#ifdef __linux__
+#include <drm/display/drm_dp.h>
+#endif
#include <linux/bitops.h>
#include <linux/bug.h>
#include <linux/errno.h>
@@ -381,12 +384,34 @@
*
* Returns 0 on success or a negative error code on failure.
*/
-int hdmi_audio_infoframe_check(struct hdmi_audio_infoframe *frame)
+int hdmi_audio_infoframe_check(const struct hdmi_audio_infoframe *frame)
{
return hdmi_audio_infoframe_check_only(frame);
}
EXPORT_SYMBOL(hdmi_audio_infoframe_check);
+static void
+hdmi_audio_infoframe_pack_payload(const struct hdmi_audio_infoframe *frame,
+ u8 *buffer)
+{
+ u8 channels;
+
+ if (frame->channels >= 2)
+ channels = frame->channels - 1;
+ else
+ channels = 0;
+
+ buffer[0] = ((frame->coding_type & 0xf) << 4) | (channels & 0x7);
+ buffer[1] = ((frame->sample_frequency & 0x7) << 2) |
+ (frame->sample_size & 0x3);
+ buffer[2] = frame->coding_type_ext & 0x1f;
+ buffer[3] = frame->channel_allocation;
+ buffer[4] = (frame->level_shift_value & 0xf) << 3;
+
+ if (frame->downmix_inhibit)
+ buffer[4] |= BIT(7);
+}
+
/**
* hdmi_audio_infoframe_pack_only() - write HDMI audio infoframe to binary buffer
* @frame: HDMI audio infoframe
@@ -404,7 +429,6 @@
ssize_t hdmi_audio_infoframe_pack_only(const struct hdmi_audio_infoframe *frame,
void *buffer, size_t size)
{
- unsigned char channels;
u8 *ptr = buffer;
size_t length;
int ret;
@@ -420,28 +444,13 @@
memset(buffer, 0, size);
- if (frame->channels >= 2)
- channels = frame->channels - 1;
- else
- channels = 0;
-
ptr[0] = frame->type;
ptr[1] = frame->version;
ptr[2] = frame->length;
ptr[3] = 0; /* checksum */
- /* start infoframe payload */
- ptr += HDMI_INFOFRAME_HEADER_SIZE;
-
- ptr[0] = ((frame->coding_type & 0xf) << 4) | (channels & 0x7);
- ptr[1] = ((frame->sample_frequency & 0x7) << 2) |
- (frame->sample_size & 0x3);
- ptr[2] = frame->coding_type_ext & 0x1f;
- ptr[3] = frame->channel_allocation;
- ptr[4] = (frame->level_shift_value & 0xf) << 3;
-
- if (frame->downmix_inhibit)
- ptr[4] |= BIT(7);
+ hdmi_audio_infoframe_pack_payload(frame,
+ ptr + HDMI_INFOFRAME_HEADER_SIZE);
hdmi_infoframe_set_checksum(buffer, length);
@@ -479,6 +488,45 @@
}
EXPORT_SYMBOL(hdmi_audio_infoframe_pack);
+#ifdef __linux__
+/**
+ * hdmi_audio_infoframe_pack_for_dp - Pack a HDMI Audio infoframe for DisplayPort
+ *
+ * @frame: HDMI Audio infoframe
+ * @sdp: Secondary data packet for DisplayPort.
+ * @dp_version: DisplayPort version to be encoded in the header
+ *
+ * Packs a HDMI Audio Infoframe to be sent over DisplayPort. This function
+ * fills the secondary data packet to be used for DisplayPort.
+ *
+ * Return: Number of total written bytes or a negative errno on failure.
+ */
+ssize_t
+hdmi_audio_infoframe_pack_for_dp(const struct hdmi_audio_infoframe *frame,
+ struct dp_sdp *sdp, u8 dp_version)
+{
+ int ret;
+
+ ret = hdmi_audio_infoframe_check(frame);
+ if (ret)
+ return ret;
+
+ memset(sdp->db, 0, sizeof(sdp->db));
+
+ /* Secondary-data packet header */
+ sdp->sdp_header.HB0 = 0;
+ sdp->sdp_header.HB1 = frame->type;
+ sdp->sdp_header.HB2 = DP_SDP_AUDIO_INFOFRAME_HB2;
+ sdp->sdp_header.HB3 = (dp_version & 0x3f) << 2;
+
+ hdmi_audio_infoframe_pack_payload(frame, sdp->db);
+
+ /* Return size = frame length + four HB for sdp_header */
+ return frame->length + 4;
+}
+EXPORT_SYMBOL(hdmi_audio_infoframe_pack_for_dp);
+#endif
+
/**
* hdmi_vendor_infoframe_init() - initialize an HDMI vendor infoframe
* @frame: HDMI vendor infoframe
diff --git a/sys/modules/linuxkpi_video/Makefile b/sys/modules/linuxkpi_video/Makefile
--- a/sys/modules/linuxkpi_video/Makefile
+++ b/sys/modules/linuxkpi_video/Makefile
@@ -3,6 +3,7 @@
KMOD= linuxkpi_video
SRCS= linux_hdmi.c \
linux_aperture.c \
+ linux_cmdline.c \
linuxkpi_videokmod.c
SRCS+= ${LINUXKPI_GENSRCS}

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