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Commit c91b557a authored by Joseph Chan's avatar Joseph Chan Committed by Linus Torvalds
Browse files

viafb: iface.c, iface.h, ioctl.c, ioctl.h 



iface.c, iface.h: support getting video memory from backdoor.
ioctl.c, ioctl.h: support user mode application with additional information

Signed-off-by: default avatarJoseph Chan <josephchan@via.com.tw>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent d61e0bf3

drivers/video/via/iface.c

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/*

 * Copyright 1998-2008 VIA Technologies, Inc. All Rights Reserved.

 * Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved.



 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public

 * License as published by the Free Software Foundation;

 * either version 2, or (at your option) any later version.



 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTIES OR REPRESENTATIONS; without even

 * the implied warranty of MERCHANTABILITY or FITNESS FOR

 * A PARTICULAR PURPOSE.See the GNU General Public License

 * for more details.



 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc.,

 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

 */



#include "global.h"



/* Get frame buffer size from VGA BIOS */



unsigned int viafb_get_memsize(void)

{

	unsigned int m;



	/* If memory size provided by user */

	if (viafb_memsize)

		m = viafb_memsize * Mb;

	else {

		m = (unsigned int)viafb_read_reg(VIASR, SR39);

		m = m * (4 * Mb);



		if ((m < (16 * Mb)) || (m > (64 * Mb)))

			m = 16 * Mb;

	}

	DEBUG_MSG(KERN_INFO "framebuffer size = %d Mb\n", m / Mb);

	return m;

}



/* Get Video Buffer Starting Physical Address(back door)*/



unsigned long viafb_get_videobuf_addr(void)

{

	struct pci_dev *pdev = NULL;

	unsigned char sys_mem;

	unsigned char video_mem;

	unsigned long sys_mem_size;

	unsigned long video_mem_size;

	/*system memory = 256 MB, video memory 64 MB */

	unsigned long vmem_starting_adr = 0x0C000000;



	pdev =

	    (struct pci_dev *)pci_get_device(VIA_K800_BRIDGE_VID,

					     VIA_K800_BRIDGE_DID, NULL);

	if (pdev != NULL) {

		pci_read_config_byte(pdev, VIA_K800_SYSTEM_MEMORY_REG,

				     &sys_mem);

		pci_read_config_byte(pdev, VIA_K800_VIDEO_MEMORY_REG,

				     &video_mem);

		video_mem = (video_mem & 0x70) >> 4;

		sys_mem_size = ((unsigned long)sys_mem) << 24;

		if (video_mem != 0)

			video_mem_size = (1 << (video_mem)) * 1024 * 1024;

		else

			video_mem_size = 0;



		vmem_starting_adr = sys_mem_size - video_mem_size;

		pci_dev_put(pdev);

	}



	DEBUG_MSG(KERN_INFO "Video Memory Starting Address = %lx \n",

		  vmem_starting_adr);

	return vmem_starting_adr;

}

drivers/video/via/iface.h

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Original line number Diff line number Diff line 
/*

 * Copyright 1998-2008 VIA Technologies, Inc. All Rights Reserved.

 * Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved.



 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public

 * License as published by the Free Software Foundation;

 * either version 2, or (at your option) any later version.



 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTIES OR REPRESENTATIONS; without even

 * the implied warranty of MERCHANTABILITY or FITNESS FOR

 * A PARTICULAR PURPOSE.See the GNU General Public License

 * for more details.



 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc.,

 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

 */



#ifndef __IFACE_H__

#define __IFACE_H__



#define Kb  (1024)

#define Mb  (Kb*Kb)



#define VIA_K800_BRIDGE_VID         0x1106

#define VIA_K800_BRIDGE_DID         0x3204



#define VIA_K800_SYSTEM_MEMORY_REG  0x47

#define VIA_K800_VIDEO_MEMORY_REG   0xA1



extern int viafb_memsize;

unsigned int viafb_get_memsize(void);

unsigned long viafb_get_videobuf_addr(void);



#endif /* __IFACE_H__ */

drivers/video/via/ioctl.c

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/*

 * Copyright 1998-2008 VIA Technologies, Inc. All Rights Reserved.

 * Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved.



 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public

 * License as published by the Free Software Foundation;

 * either version 2, or (at your option) any later version.



 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTIES OR REPRESENTATIONS; without even

 * the implied warranty of MERCHANTABILITY or FITNESS FOR

 * A PARTICULAR PURPOSE.See the GNU General Public License

 * for more details.



 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc.,

 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

 */



#include "global.h"



int viafb_ioctl_get_viafb_info(u_long arg)

{

	struct viafb_ioctl_info viainfo;



	viainfo.viafb_id = VIAID;

	viainfo.vendor_id = PCI_VIA_VENDOR_ID;



	switch (viaparinfo->chip_info->gfx_chip_name) {

	case UNICHROME_CLE266:

		viainfo.device_id = UNICHROME_CLE266_DID;

		break;



	case UNICHROME_K400:

		viainfo.device_id = UNICHROME_K400_DID;

		break;



	case UNICHROME_K800:

		viainfo.device_id = UNICHROME_K800_DID;

		break;



	case UNICHROME_PM800:

		viainfo.device_id = UNICHROME_PM800_DID;

		break;



	case UNICHROME_CN700:

		viainfo.device_id = UNICHROME_CN700_DID;

		break;



	case UNICHROME_CX700:

		viainfo.device_id = UNICHROME_CX700_DID;

		break;



	case UNICHROME_K8M890:

		viainfo.device_id = UNICHROME_K8M890_DID;

		break;



	case UNICHROME_P4M890:

		viainfo.device_id = UNICHROME_P4M890_DID;

		break;



	case UNICHROME_P4M900:

		viainfo.device_id = UNICHROME_P4M900_DID;

		break;

	}



	viainfo.version = VERSION_MAJOR;

	viainfo.revision = VERSION_MINOR;



	if (copy_to_user((void __user *)arg, &viainfo, sizeof(viainfo)))

		return -EFAULT;



	return 0;

}



/* Hot-Plug Priority: DVI > CRT*/

int viafb_ioctl_hotplug(int hres, int vres, int bpp)

{

	int DVIsense, status = 0;

	DEBUG_MSG(KERN_INFO "viafb_ioctl_hotplug!!\n");



	if (viaparinfo->chip_info->tmds_chip_info.tmds_chip_name !=

		NON_TMDS_TRANSMITTER) {

		DVIsense = viafb_dvi_sense();



		if (DVIsense) {

			DEBUG_MSG(KERN_INFO "DVI Attached...\n");

			if (viafb_DeviceStatus != DVI_Device) {

				viafb_DVI_ON = 1;

				viafb_CRT_ON = 0;

				viafb_LCD_ON = 0;

				viafb_DeviceStatus = DVI_Device;

				return viafb_DeviceStatus;

			}

			status = 1;

		} else

			DEBUG_MSG(KERN_INFO "DVI De-attached...\n");

	}



	if ((viafb_DeviceStatus != CRT_Device) && (status == 0)) {

		viafb_CRT_ON = 1;

		viafb_DVI_ON = 0;

		viafb_LCD_ON = 0;



		viafb_DeviceStatus = CRT_Device;

		return viafb_DeviceStatus;

	}



	return 0;

}

drivers/video/via/ioctl.h

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Original line number Diff line number Diff line 
/*

 * Copyright 1998-2008 VIA Technologies, Inc. All Rights Reserved.

 * Copyright 2001-2008 S3 Graphics, Inc. All Rights Reserved.



 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public

 * License as published by the Free Software Foundation;

 * either version 2, or (at your option) any later version.



 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTIES OR REPRESENTATIONS; without even

 * the implied warranty of MERCHANTABILITY or FITNESS FOR

 * A PARTICULAR PURPOSE.See the GNU General Public License

 * for more details.



 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc.,

 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

 */



#ifndef __IOCTL_H__

#define __IOCTL_H__



#ifndef __user

#define __user

#endif



/* VIAFB IOCTL definition */

#define VIAFB_GET_INFO_SIZE		0x56494101	/* 'VIA\01' */

#define VIAFB_GET_INFO			0x56494102	/* 'VIA\02' */

#define VIAFB_HOTPLUG			0x56494103	/* 'VIA\03' */

#define VIAFB_SET_HOTPLUG_FLAG		0x56494104	/* 'VIA\04' */

#define VIAFB_GET_RESOLUTION		0x56494105	/* 'VIA\05' */

#define VIAFB_GET_SAMM_INFO		0x56494107	/* 'VIA\07' */

#define VIAFB_TURN_ON_OUTPUT_DEVICE     0x56494108	/* 'VIA\08' */

#define VIAFB_TURN_OFF_OUTPUT_DEVICE    0x56494109	/* 'VIA\09' */

#define VIAFB_SET_DEVICE		0x5649410A

#define VIAFB_GET_DEVICE		0x5649410B

#define VIAFB_GET_DRIVER_VERSION	0x56494112	/* 'VIA\12' */

#define VIAFB_GET_CHIP_INFO		0x56494113	/* 'VIA\13' */

#define VIAFB_SET_DEVICE_INFO           0x56494114

#define VIAFB_GET_DEVICE_INFO           0x56494115



#define VIAFB_GET_DEVICE_SUPPORT	0x56494118

#define VIAFB_GET_DEVICE_CONNECT	0x56494119

#define VIAFB_GET_PANEL_SUPPORT_EXPAND	0x5649411A

#define VIAFB_GET_DRIVER_NAME		0x56494122

#define VIAFB_GET_DEVICE_SUPPORT_STATE	0x56494123

#define VIAFB_GET_GAMMA_LUT		0x56494124

#define VIAFB_SET_GAMMA_LUT		0x56494125

#define VIAFB_GET_GAMMA_SUPPORT_STATE	0x56494126

#define VIAFB_SET_VIDEO_DEVICE		0x56494127

#define VIAFB_GET_VIDEO_DEVICE		0x56494128

#define VIAFB_SET_SECOND_MODE		0x56494129

#define VIAFB_SYNC_SURFACE		0x56494130

#define VIAFB_GET_DRIVER_CAPS		0x56494131

#define VIAFB_GET_IGA_SCALING_INFO	0x56494132

#define VIAFB_GET_PANEL_MAX_SIZE	0x56494133

#define VIAFB_GET_PANEL_MAX_POSITION	0x56494134

#define VIAFB_SET_PANEL_SIZE		0x56494135

#define VIAFB_SET_PANEL_POSITION        0x56494136

#define VIAFB_GET_PANEL_POSITION        0x56494137

#define VIAFB_GET_PANEL_SIZE		0x56494138



#define None_Device 0x00

#define CRT_Device  0x01

#define LCD_Device  0x02

#define DVI_Device  0x08

#define CRT2_Device 0x10

#define LCD2_Device 0x40



#define OP_LCD_CENTERING   0x01

#define OP_LCD_PANEL_ID    0x02

#define OP_LCD_MODE        0x03



/*SAMM operation flag*/

#define OP_SAMM            0x80



#define LCD_PANEL_ID_MAXIMUM	22



#define STATE_ON            0x1

#define STATE_OFF           0x0

#define STATE_DEFAULT       0xFFFF



#define MAX_ACTIVE_DEV_NUM  2



struct device_t {

	unsigned short crt:1;

	unsigned short dvi:1;

	unsigned short lcd:1;

	unsigned short samm:1;

	unsigned short lcd_dsp_cent:1;

	unsigned char lcd_mode:1;

	unsigned short epia_dvi:1;

	unsigned short lcd_dual_edge:1;

	unsigned short lcd2:1;



	unsigned short primary_dev;

	unsigned char lcd_panel_id;

	unsigned short xres, yres;

	unsigned short xres1, yres1;

	unsigned short refresh;

	unsigned short bpp;

	unsigned short refresh1;

	unsigned short bpp1;

	unsigned short sequence;

	unsigned short bus_width;

};



struct viafb_ioctl_info {

	u32 viafb_id;		/* for identifying viafb */

#define VIAID       0x56494146	/* Identify myself with 'VIAF' */

	u16 vendor_id;

	u16 device_id;

	u8 version;

	u8 revision;

	u8 reserved[246];	/* for future use */

};



struct viafb_ioctl_mode {

	u32 xres;

	u32 yres;

	u32 refresh;

	u32 bpp;

	u32 xres_sec;

	u32 yres_sec;

	u32 virtual_xres_sec;

	u32 virtual_yres_sec;

	u32 refresh_sec;

	u32 bpp_sec;

};

struct viafb_ioctl_samm {

	u32 samm_status;

	u32 size_prim;

	u32 size_sec;

	u32 mem_base;

	u32 offset_sec;

};



struct viafb_driver_version {

	int iMajorNum;

	int iKernelNum;

	int iOSNum;

	int iMinorNum;

};



struct viafb_ioctl_lcd_attribute {

	unsigned int panel_id;

	unsigned int display_center;

	unsigned int lcd_mode;

};



struct viafb_ioctl_setting {

	/* Enable or disable active devices */

	unsigned short device_flag;

	/* Indicate which device should be turn on or turn off. */

	unsigned short device_status;

	unsigned int reserved;

	/* Indicate which LCD's attribute can be changed. */

	unsigned short lcd_operation_flag;

	/* 1: SAMM ON  0: SAMM OFF */

	unsigned short samm_status;

	/* horizontal resolution of first device */

	unsigned short first_dev_hor_res;

	/* vertical resolution of first device */

	unsigned short first_dev_ver_res;

	/* horizontal resolution of second device */

	unsigned short second_dev_hor_res;

	/* vertical resolution of second device */

	unsigned short second_dev_ver_res;

	/* refresh rate of first device */

	unsigned short first_dev_refresh;

	/* bpp of first device */

	unsigned short first_dev_bpp;

	/* refresh rate of second device */

	unsigned short second_dev_refresh;

	/* bpp of second device */

	unsigned short second_dev_bpp;

	/* Indicate which device are primary display device. */

	unsigned int primary_device;

	/* Indicate which device will show video. only valid in duoview mode */

	unsigned int video_device_status;

	unsigned int struct_reserved[34];

	struct viafb_ioctl_lcd_attribute lcd_attributes;

};



struct _UTFunctionCaps {

	unsigned int dw3DScalingState;

	unsigned int reserved[31];

};



struct _POSITIONVALUE {

	unsigned int dwX;

	unsigned int dwY;

};



struct _panel_size_pos_info {

	unsigned int device_type;

	int x;

	int y;

};



extern int viafb_LCD_ON;

extern int viafb_DVI_ON;



int viafb_ioctl_get_viafb_info(u_long arg);

int viafb_ioctl_hotplug(int hres, int vres, int bpp);



#endif /* __IOCTL_H__ */