[PATCH 7/13] viafb: iface.c, iface.h, ioctl.c, ioctl.h

From: JosephChan
Date: Mon Jun 30 2008 - 03:26:38 EST

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@xxxxxxxxxx>

diff -Nur a/drivers/video/via/iface.c b/drivers/video/via/iface.c
--- a/drivers/video/via/iface.c 1970-01-01 08:00:00.000000000 +0800
+++ b/drivers/video/via/iface.c 2008-06-30 08:53:33.000000000 +0800
@@ -0,0 +1,78 @@
+/*
+ * 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 get_memsize(void)
+{
+ unsigned int m;
+
+ /* If memory size provided by user */
+ if (via_fb_memsize)
+ m = via_fb_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 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;
+}
diff -Nur a/drivers/video/via/iface.h b/drivers/video/via/iface.h
--- a/drivers/video/via/iface.h 1970-01-01 08:00:00.000000000 +0800
+++ b/drivers/video/via/iface.h 2008-06-30 08:53:33.000000000 +0800
@@ -0,0 +1,38 @@
+/*
+ * 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 via_fb_memsize;
+unsigned int get_memsize(void);
+unsigned long get_videobuf_addr(void);
+
+#endif /* __IFACE_H__ */
diff -Nur a/drivers/video/via/ioctl.c b/drivers/video/via/ioctl.c
--- a/drivers/video/via/ioctl.c 1970-01-01 08:00:00.000000000 +0800
+++ b/drivers/video/via/ioctl.c 2008-06-30 08:53:33.000000000 +0800
@@ -0,0 +1,112 @@
+/*
+ * 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;
+}
diff -Nur a/drivers/video/via/ioctl.h b/drivers/video/via/ioctl.h
--- a/drivers/video/via/ioctl.h 1970-01-01 08:00:00.000000000 +0800
+++ b/drivers/video/via/ioctl.h 2008-06-30 08:53:33.000000000 +0800
@@ -0,0 +1,212 @@
+/*
+ * 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 primary_dev;
+
+ unsigned short lcd_dsp_cent:1;
+ unsigned char lcd_panel_id;
+ unsigned char lcd_mode:1;
+
+ 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 epia_dvi:1;
+ unsigned short lcd_dual_edge:1;
+ unsigned short bus_width;
+ unsigned short lcd2:1;
+};
+
+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__ */
¢éì®&Þ~º&¶¬–+-±éÝ¥Šw®žË±Êâmébžìdz¹Þ)í…æèw*jg¬±¨¶‰šŽŠÝj/êäz¹ÞŠà2ŠÞ¨è­Ú&¢)ß«a¶Úþø®G«éh®æj:+v‰¨Šwè†Ù>Wš±êÞiÛaxPjØm¶Ÿÿà -»+ƒùdš_