* Changed get_boot_item() API: it now also can retrieve the size of the boot

item entry.
* The bios_ia32 video platform code now stores the available VESA modes in
  the new vesa_modes kernel_args field.
* When configuring a VESA mode via settings file, it's no longer needed to
  specify the exact mode - the closest available mode is now used. This should
  help with bug #1962.
* frame_buffer_console_init() now also creates a boot_item for the VESA modes
  in the kernel_args.
* The VESA accelerant now filters the mode list to only contain modes that
  are actually supported.
* Moved non-shared vesa driver data into its own file vesa_private.h.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24675 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/kernel/boot/kernel_args.h

@@ -1,5 +1,5 @@
 /* 
- * Copyright 2002-2007, Axel Dörfler, [email protected].
+ * Copyright 2002-2008, Axel Dörfler, [email protected].
  * Distributed under the terms of the MIT License.
  *
  * Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
@@ -71,6 +71,9 @@ typedef struct kernel_args {
 		bool	enabled;
 	} frame_buffer;
 
+	void		*vesa_modes;
+	uint32		vesa_modes_size;
+
 	void		*debug_output;
 	uint32		debug_size;
 

headers/private/kernel/boot_item.h

@@ -1,5 +1,5 @@
 /*
- * Copyright 2005, Axel Dörfler, [email protected]. All rights reserved.
+ * Copyright 2005-2008, Axel Dörfler, [email protected]. All rights reserved.
  * Distributed under the terms of the MIT License.
  */
 #ifndef _KERNEL_BOOT_ITEM_H
@@ -15,7 +15,7 @@ extern "C" {
 extern status_t boot_item_init(void);
 
 extern status_t add_boot_item(const char *name, void *data, size_t size);
-extern void *get_boot_item(const char *name);
+extern void *get_boot_item(const char *name, size_t *_size);
 
 #ifdef __cplusplus
 }

src/add-ons/accelerants/vesa/accelerant.cpp

@@ -110,14 +110,15 @@ init_common(int device, bool isClone)
 		return status;
 	}
 
+	gInfo->vesa_modes = (vesa_mode *)((uint8 *)gInfo->shared_info
+		+ gInfo->shared_info->vesa_mode_offset);
+
 	sharedCloner.Keep();
 	return B_OK;
 }
 
 
-/** Cleans up everything done by a successful init_common().
- */
-
+/*!	Cleans up everything done by a successful init_common(). */
 static void
 uninit_common(void)
 {
@@ -138,7 +139,6 @@ uninit_common(void)
 
 
 /*!	Init primary accelerant */
-
 status_t
 vesa_init_accelerant(int device)
 {

src/add-ons/accelerants/vesa/accelerant.h

@@ -1,5 +1,5 @@
 /*
- * Copyright 2005, Axel Dörfler, [email protected]. All rights reserved.
+ * Copyright 2005-2008, Axel Dörfler, [email protected]. All rights reserved.
  * Distributed under the terms of the MIT License.
  */
 #ifndef VESA_ACCELERANT_H
@@ -10,14 +10,17 @@
 
 
 typedef struct accelerant_info {
-	int					device;				// file descriptor of kernel device
+	int					device;
 	bool				is_clone;
 
 	area_id				shared_info_area;
 	vesa_shared_info	*shared_info;
 
-	area_id				mode_list_area;		// cloned list of standard display modes
+	area_id				mode_list_area;
+		// cloned list of standard display modes
 	display_mode		*mode_list;
+
+	vesa_mode			*vesa_modes;
 } accelerant_info;
 
 extern accelerant_info *gInfo;

src/add-ons/accelerants/vesa/mode.cpp

@@ -21,6 +21,48 @@ extern "C" void _sPrintf(const char *format, ...);
 #endif
 
 
+static uint32
+get_color_space_for_depth(uint32 depth)
+{
+	switch (depth) {
+		case 4:
+			return B_GRAY8;
+				// the app_server is smart enough to translate this to VGA mode
+		case 8:
+			return B_CMAP8;
+		case 15:
+			return B_RGB15;
+		case 16:
+			return B_RGB16;
+		case 24:
+			return B_RGB24;
+		case 32:
+			return B_RGB32;
+	}
+
+	return 0;
+}
+
+
+/*!	Checks if the specified \a mode can be set using VESA. */
+static bool
+is_mode_supported(display_mode *mode)
+{
+	vesa_mode *modes = gInfo->vesa_modes;
+
+	for (uint32 i = gInfo->shared_info->vesa_mode_count; i-- > 0;) {
+		// search mode in VESA mode list
+		// TODO: list is ordered, we could use binary search
+		if (modes[i].width == mode->virtual_width
+			&& modes[i].height == mode->virtual_height
+			&& get_color_space_for_depth(modes[i].bits_per_pixel)
+				== mode->space)
+			return true;
+	}
+
+	return false;
+}
+
 
 /*!	Creates the initial mode list of the primary accelerant.
 	It's called from vesa_init_accelerant().
@@ -28,11 +70,12 @@ extern "C" void _sPrintf(const char *format, ...);
 status_t
 create_mode_list(void)
 {
-	// ToDo: basically, the boot loader should pass a list of all supported
-	//	VESA modes to us.
-	
+	const color_space kVesaSpaces[] = {B_RGB32_LITTLE, B_RGB24_LITTLE,
+		B_RGB16_LITTLE, B_RGB15_LITTLE, B_CMAP8};
+
 	gInfo->mode_list_area = create_display_modes("vesa modes", NULL, NULL, 0,
-		NULL, 0, NULL, &gInfo->mode_list, &gInfo->shared_info->mode_count);
+		kVesaSpaces, sizeof(kVesaSpaces) / sizeof(kVesaSpaces[0]),
+		is_mode_supported, &gInfo->mode_list, &gInfo->shared_info->mode_count);
 	if (gInfo->mode_list_area < B_OK)
 		return gInfo->mode_list_area;
 
@@ -56,7 +99,8 @@ status_t
 vesa_get_mode_list(display_mode *modeList)
 {
 	TRACE(("vesa_get_mode_info()\n"));
-	memcpy(modeList, gInfo->mode_list, gInfo->shared_info->mode_count * sizeof(display_mode));
+	memcpy(modeList, gInfo->mode_list,
+		gInfo->shared_info->mode_count * sizeof(display_mode));
 	return B_OK;
 }
 

src/add-ons/kernel/drivers/graphics/vesa/device.cpp

@@ -1,26 +1,28 @@
 /*
- * Copyright 2005-2006, Axel Dörfler, [email protected]. All rights reserved.
+ * Copyright 2005-2008, Axel Dörfler, [email protected]. All rights reserved.
  * Distributed under the terms of the MIT License.
  */
 
 
 #include "device.h"
-#include "driver.h"
-#include "utility.h"
-#include "vesa_info.h"
-#include "vga.h"
-
-#include <OS.h>
-#include <KernelExport.h>
-#include <Drivers.h>
-#include <PCI.h>
-#include <SupportDefs.h>
-#include <graphic_driver.h>
-#include <image.h>
 
 #include <stdlib.h>
 #include <string.h>
 
+#include <Drivers.h>
+#include <graphic_driver.h>
+#include <image.h>
+#include <KernelExport.h>
+#include <OS.h>
+#include <PCI.h>
+#include <SupportDefs.h>
+
+#include "driver.h"
+#include "utility.h"
+#include "vesa_info.h"
+#include "vesa_private.h"
+#include "vga.h"
+
 
 //#define TRACE_DEVICE
 #ifdef TRACE_DEVICE
@@ -128,8 +130,11 @@ device_ioctl(void *cookie, uint32 msg, void *buffer, size_t bufferLength)
 
 	switch (msg) {
 		case B_GET_ACCELERANT_SIGNATURE:
-			user_strlcpy((char *)buffer, VESA_ACCELERANT_NAME, B_FILE_NAME_LENGTH);
 			dprintf(DEVICE_NAME ": acc: %s\n", VESA_ACCELERANT_NAME);
+			if (user_strlcpy((char *)buffer, VESA_ACCELERANT_NAME,
+					B_FILE_NAME_LENGTH) < B_OK)
+				return B_BAD_ADDRESS;
+
 			return B_OK;
 
 		// needed to share data between kernel and accelerant		
@@ -138,8 +143,10 @@ device_ioctl(void *cookie, uint32 msg, void *buffer, size_t bufferLength)
 
 		// needed for cloning
 		case VESA_GET_DEVICE_NAME:
-			if (user_strlcpy((char *)buffer, gDeviceNames[info->id], B_PATH_NAME_LENGTH) < B_OK)
+			if (user_strlcpy((char *)buffer, gDeviceNames[info->id],
+					B_PATH_NAME_LENGTH) < B_OK)
 				return B_BAD_ADDRESS;
+
 			return B_OK;
 
 		case VGA_SET_INDEXED_COLORS:

src/add-ons/kernel/drivers/graphics/vesa/driver.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright 2005-2006, Axel Dörfler, [email protected]. All rights reserved.
+ * Copyright 2005-2008, Axel Dörfler, [email protected]. All rights reserved.
  * Distributed under the terms of the MIT License.
  */
 
@@ -75,7 +75,7 @@ init_hardware(void)
 {
 	TRACE((DEVICE_NAME ": init_hardware()\n"));
 
-	return get_boot_item(FRAME_BUFFER_BOOT_INFO) != NULL ? B_OK : B_ERROR;
+	return get_boot_item(FRAME_BUFFER_BOOT_INFO, NULL) != NULL ? B_OK : B_ERROR;
 }
 
 

src/add-ons/kernel/drivers/graphics/vesa/driver.h

@@ -1,5 +1,5 @@
 /*
- * Copyright 2005-2006, Axel Dörfler, [email protected]. All rights reserved.
+ * Copyright 2005-2008, Axel Dörfler, [email protected]. All rights reserved.
  * Distributed under the terms of the MIT License.
  */
 #ifndef DRIVER_H
@@ -9,7 +9,7 @@
 #include <KernelExport.h>
 #include <ISA.h>
 
-#include "vesa_info.h"
+#include "vesa_private.h"
 #include "lock.h"
 
 

src/add-ons/kernel/drivers/graphics/vesa/vesa.cpp

@@ -1,20 +1,21 @@
 /*
- * Copyright 2005-2006, Axel Dörfler, [email protected]. All rights reserved.
+ * Copyright 2005-2008, Axel Dörfler, [email protected]. All rights reserved.
  * Distributed under the terms of the MIT License.
  */
 
 
-#include <boot_item.h>
-#include <frame_buffer_console.h>
-
-#include "vesa_info.h"
-#include "driver.h"
-#include "utility.h"
-
-#include "util/kernel_cpp.h"
+#include "vesa_private.h"
 
 #include <string.h>
 
+#include <boot_item.h>
+#include <frame_buffer_console.h>
+#include <util/kernel_cpp.h>
+
+#include "driver.h"
+#include "utility.h"
+#include "vesa_info.h"
+
 
 class PhysicalMemoryMapper {
 	public:
@@ -65,55 +66,77 @@ PhysicalMemoryMapper::Keep()
 //	#pragma mark -
 
 
+static uint32
+get_color_space_for_depth(uint32 depth)
+{
+	switch (depth) {
+		case 4:
+			return B_GRAY8;
+				// the app_server is smart enough to translate this to VGA mode
+		case 8:
+			return B_CMAP8;
+		case 15:
+			return B_RGB15;
+		case 16:
+			return B_RGB16;
+		case 24:
+			return B_RGB24;
+		case 32:
+			return B_RGB32;
+	}
+
+	return 0;
+}
+
+
+//	#pragma mark -
+
+
 status_t
 vesa_init(vesa_info &info)
 {
 	frame_buffer_boot_info *bufferInfo
-		= (frame_buffer_boot_info *)get_boot_item(FRAME_BUFFER_BOOT_INFO);
+		= (frame_buffer_boot_info *)get_boot_item(FRAME_BUFFER_BOOT_INFO, NULL);
 	if (bufferInfo == NULL)
 		return B_ERROR;
 
-	info.shared_area = create_area("vesa shared info", (void **)&info.shared_info, 
-			B_ANY_KERNEL_ADDRESS, ROUND_TO_PAGE_SIZE(sizeof(vesa_shared_info)),
-			B_FULL_LOCK,
-			B_KERNEL_READ_AREA | B_KERNEL_WRITE_AREA | B_USER_CLONEABLE_AREA);
+	size_t modesSize = 0;
+	vesa_mode *modes = (vesa_mode *)get_boot_item(VESA_MODES_BOOT_INFO,
+		&modesSize);
+
+	size_t sharedSize = (sizeof(vesa_shared_info) + 7) & ~7;
+
+	info.shared_area = create_area("vesa shared info",
+		(void **)&info.shared_info, B_ANY_KERNEL_ADDRESS,
+		ROUND_TO_PAGE_SIZE(sharedSize + modesSize), B_FULL_LOCK,
+		B_KERNEL_READ_AREA | B_KERNEL_WRITE_AREA | B_USER_CLONEABLE_AREA);
 	if (info.shared_area < B_OK)
 		return info.shared_area;
 
-	memset((void *)info.shared_info, 0, sizeof(vesa_shared_info));
+	vesa_shared_info &sharedInfo = *info.shared_info;
 
-	info.shared_info->frame_buffer_area = bufferInfo->area;
-	info.shared_info->frame_buffer = (uint8 *)bufferInfo->frame_buffer;
+	memset(/*(void *)*/&sharedInfo, 0, sizeof(vesa_shared_info));
 
-	info.shared_info->current_mode.virtual_width = bufferInfo->width;
-	info.shared_info->current_mode.virtual_height = bufferInfo->height;
-	switch (bufferInfo->depth) {
-		case 4:
-			info.shared_info->current_mode.space = B_GRAY8;
-				// the app_server is smart enough to translate this to VGA mode
-			break;
-		case 8:
-			info.shared_info->current_mode.space = B_CMAP8;
-			break;
-		case 15:
-			info.shared_info->current_mode.space = B_RGB15;
-			break;
-		case 16:
-			info.shared_info->current_mode.space = B_RGB16;
-			break;
-		case 24:
-			info.shared_info->current_mode.space = B_RGB24;
-			break;
-		case 32:
-			info.shared_info->current_mode.space = B_RGB32;
-			break;
+	if (modes != NULL) {
+		sharedInfo.vesa_mode_offset = sharedSize;
+		sharedInfo.vesa_mode_count = modesSize / sizeof(vesa_mode);
+
+		memcpy((uint8*)&sharedInfo + sharedSize, modes, modesSize);
 	}
-	info.shared_info->bytes_per_row = bufferInfo->bytes_per_row;
+
+	sharedInfo.frame_buffer_area = bufferInfo->area;
+	sharedInfo.frame_buffer = (uint8 *)bufferInfo->frame_buffer;
+
+	sharedInfo.current_mode.virtual_width = bufferInfo->width;
+	sharedInfo.current_mode.virtual_height = bufferInfo->height;
+	sharedInfo.current_mode.space = get_color_space_for_depth(
+		bufferInfo->depth);
+	sharedInfo.bytes_per_row = bufferInfo->bytes_per_row;
 
 	physical_entry mapping;
-	get_memory_map((void *)info.shared_info->frame_buffer, B_PAGE_SIZE,
+	get_memory_map((void *)sharedInfo.frame_buffer, B_PAGE_SIZE,
 		&mapping, 1);
-	info.shared_info->physical_frame_buffer = (uint8 *)mapping.address;
+	sharedInfo.physical_frame_buffer = (uint8 *)mapping.address;
 
 	dprintf(DEVICE_NAME ": vesa_init() completed successfully!\n");
 	return B_OK;

src/add-ons/kernel/drivers/graphics/vesa/vesa_private.h

@@ -0,0 +1,32 @@
+/*
+ * Copyright 2005-2008, Axel Dörfler, [email protected]. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ */
+#ifndef VESA_PRIVATE_H
+#define VESA_PRIVATE_H
+
+
+#include <Drivers.h>
+#include <Accelerant.h>
+#include <PCI.h>
+
+
+#define DEVICE_NAME				"vesa"
+#define VESA_ACCELERANT_NAME	"vesa.accelerant"
+
+
+struct vesa_get_supported_modes;
+
+struct vesa_info {
+	uint32			cookie_magic;
+	int32			open_count;
+	int32			id;
+	pci_info		*pci;
+	struct vesa_shared_info *shared_info;
+	area_id			shared_area;
+};
+
+extern status_t vesa_init(vesa_info &info);
+extern void vesa_uninit(vesa_info &info);
+
+#endif	/* VESA_PRIVATE_H */

src/system/boot/Jamfile

@@ -1,6 +1,7 @@
 SubDir HAIKU_TOP src system boot ;
 
 local librootFunctions =
+	abs.o
 	byteorder.o
 	ctype.o
 	qsort.o

src/system/boot/platform/bios_ia32/video.cpp

@@ -7,6 +7,7 @@
 #include "video.h"
 #include "bios.h"
 #include "vesa.h"
+#include "vesa_info.h"
 #include "vga.h"
 #include "mmu.h"
 
@@ -44,7 +45,8 @@ struct video_mode {
 static vbe_info_block sInfo;
 static video_mode *sMode, *sDefaultMode;
 static bool sVesaCompatible;
-struct list sModeList;
+static struct list sModeList;
+static uint32 sModeCount;
 static addr_t sFrameBuffer;
 static bool sModeChosen;
 static bool sSettingsLoaded;
@@ -86,6 +88,7 @@ add_video_mode(video_mode *videoMode)
 	}
 
 	list_insert_item_before(&sModeList, mode, videoMode);
+	sModeCount++;
 }
 
 
@@ -113,19 +116,24 @@ find_video_mode(int32 width, int32 height, bool allowPalette)
 
 
 static video_mode *
-find_video_mode(int32 width, int32 height, int32 depth)
+closest_video_mode(int32 width, int32 height, int32 depth)
 {
+	video_mode *bestMode = NULL;
+	uint32 bestDiff = 0;
+
 	video_mode *mode = NULL;
 	while ((mode = (video_mode *)list_get_next_item(&sModeList, mode))
 			!= NULL) {
-		if (mode->width == width
-			&& mode->height == height
-			&& mode->bits_per_pixel == depth) {
-			return mode;
+		uint32 diff = 2 * abs(mode->width - width) + abs(mode->height - height)
+			+ abs(mode->bits_per_pixel - depth);
+
+		if (bestMode == NULL || bestDiff > diff) {
+			bestMode = mode;
+			bestDiff = diff;
 		}
 	}
 
-	return NULL;
+	return bestMode;
 }
 
 
@@ -196,7 +204,7 @@ get_mode_from_settings(void)
 
 			// search mode that fits
 
-			video_mode *mode = find_video_mode(width, height, depth);
+			video_mode *mode = closest_video_mode(width, height, depth);
 			if (mode != NULL) {
 				found = true;
 				sMode = mode;
@@ -905,6 +913,24 @@ platform_init_video(void)
 
 	TRACE(("VESA compatible graphics!\n"));
 
+	// store VESA modes into kernel args
+	vesa_mode *modes = (vesa_mode *)kernel_args_malloc(
+		sModeCount * sizeof(vesa_mode));
+	if (modes != NULL) {
+		video_mode *mode = NULL;
+		uint32 i = 0;
+		while ((mode = (video_mode *)list_get_next_item(&sModeList, mode))
+				!= NULL) {
+			modes[i].width = mode->width;
+			modes[i].height = mode->height;
+			modes[i].bits_per_pixel = mode->bits_per_pixel;
+			i++;
+		}
+
+		gKernelArgs.vesa_modes = modes;
+		gKernelArgs.vesa_modes_size = sModeCount * sizeof(vesa_mode);
+	}
+
 	edid1_info info;
 	if (vesa_get_edid(&info) == B_OK) {
 		// we got EDID information from the monitor, try to find a new default

src/system/kernel/boot_item.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright 2005, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
+ * Copyright 2005-2008, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
  * Distributed under the terms of the MIT License.
  */
 
@@ -44,7 +44,7 @@ add_boot_item(const char *name, void *data, size_t size)
 
 
 void *
-get_boot_item(const char *name)
+get_boot_item(const char *name, size_t *_size)
 {
 	if (name == NULL || name[0] == '\0')
 		return NULL;
@@ -53,8 +53,12 @@ get_boot_item(const char *name)
 	for (ItemList::Iterator it = sItemList.GetIterator(); it.HasNext();) {
 		boot_item *item = it.Next();
 
-		if (!strcmp(name, item->name))
+		if (!strcmp(name, item->name)) {
+			if (_size != NULL)
+				*_size = item->size;
+
 			return item->data;
+		}
 	}
 
 	return NULL;

src/system/kernel/boot_splash.cpp

@@ -176,7 +176,8 @@ boot_splash_init(void)
 	if (debug_screen_output_enabled())
 		return;
 
-	sInfo = (frame_buffer_boot_info *)get_boot_item(FRAME_BUFFER_BOOT_INFO);
+	sInfo = (frame_buffer_boot_info *)get_boot_item(FRAME_BUFFER_BOOT_INFO,
+		NULL);
 }
 
 

src/system/kernel/debug/Jamfile

@@ -1,6 +1,7 @@
 SubDir HAIKU_TOP src system kernel debug ;
 
 UsePrivateHeaders [ FDirName kernel debug ] syslog_daemon ;
+UsePrivateHeaders [ FDirName graphics vesa ] ;
 
 KernelMergeObject kernel_debug.o :
 	blue_screen.cpp

src/system/kernel/debug/frame_buffer_console.cpp

@@ -11,6 +11,7 @@
 #include <vm.h>
 #include <fs/devfs.h>
 #include <boot/kernel_args.h>
+#include <vesa_info.h>
 
 #include <frame_buffer_console.h>
 #include "font.h"
@@ -68,6 +69,7 @@ static uint32 sPalette32[] = {
 
 static struct console_info sConsole;
 static struct frame_buffer_boot_info sBootInfo;
+static struct vesa_mode *sVesaModes;
 
 
 static inline uint8
@@ -416,6 +418,12 @@ frame_buffer_console_init(kernel_args *args)
 	add_boot_item(FRAME_BUFFER_BOOT_INFO, &sBootInfo,
 		sizeof(frame_buffer_boot_info));
 
+	sVesaModes = (vesa_mode *)malloc(args->vesa_modes_size);
+	if (sVesaModes != NULL) {
+		memcpy(sVesaModes, args->vesa_modes, args->vesa_modes_size);
+		add_boot_item(VESA_MODES_BOOT_INFO, sVesaModes, args->vesa_modes_size);
+	}
+
 	return B_OK;
 }