viafb: iface.c, iface.h, ioctl.c, ioctl.h
Joseph Chan [Thu, 16 Oct 2008 05:03:24 +0000 (22:03 -0700)]
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>

drivers/video/via/iface.c [new file with mode: 0644]
drivers/video/via/iface.h [new file with mode: 0644]
drivers/video/via/ioctl.c [new file with mode: 0644]
drivers/video/via/ioctl.h [new file with mode: 0644]

diff --git a/drivers/video/via/iface.c b/drivers/video/via/iface.c
new file mode 100644 (file)
index 0000000..1570636
--- /dev/null
@@ -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 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;
+}
diff --git a/drivers/video/via/iface.h b/drivers/video/via/iface.h
new file mode 100644 (file)
index 0000000..790ec3e
--- /dev/null
@@ -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 viafb_memsize;
+unsigned int viafb_get_memsize(void);
+unsigned long viafb_get_videobuf_addr(void);
+
+#endif /* __IFACE_H__ */
diff --git a/drivers/video/via/ioctl.c b/drivers/video/via/ioctl.c
new file mode 100644 (file)
index 0000000..da03c07
--- /dev/null
@@ -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 --git a/drivers/video/via/ioctl.h b/drivers/video/via/ioctl.h
new file mode 100644 (file)
index 0000000..842fe30
--- /dev/null
@@ -0,0 +1,210 @@
+/*
+ * 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__ */