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: Joseph Chan <josephchan@via.com.tw>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Joseph Chan 2008-10-15 22:03:24 -07:00 committed by Linus Torvalds
parent d61e0bf38e
commit c91b557ad0
4 changed files with 438 additions and 0 deletions

78
drivers/video/via/iface.c Normal file
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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;
}

38
drivers/video/via/iface.h Normal file
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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.
*/
#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__ */

112
drivers/video/via/ioctl.c Normal file
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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;
}

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drivers/video/via/ioctl.h Normal file
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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.
*/
#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__ */