mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-16 16:54:20 +08:00
2682d27c58
From: Arjan van de Ven <arjan@infradead.org> Convert the semaphores-used-as-mutex to mutexes in the sisusb video driver; this required manual checking due to the "return as locked" stuff in this driver, but the ->lock semaphore is still used as mutex in the end. Signed-off-by: Arjan van de Ven <arjan@infradead.org> Cc: Thomas Winischhofer <winischhofer.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
321 lines
10 KiB
C
321 lines
10 KiB
C
/*
|
|
* sisusb - usb kernel driver for Net2280/SiS315 based USB2VGA dongles
|
|
*
|
|
* Copyright (C) 2005 by Thomas Winischhofer, Vienna, Austria
|
|
*
|
|
* If distributed as part of the Linux kernel, this code is licensed under the
|
|
* terms of the GPL v2.
|
|
*
|
|
* Otherwise, the following license terms apply:
|
|
*
|
|
* * Redistribution and use in source and binary forms, with or without
|
|
* * modification, are permitted provided that the following conditions
|
|
* * are met:
|
|
* * 1) Redistributions of source code must retain the above copyright
|
|
* * notice, this list of conditions and the following disclaimer.
|
|
* * 2) Redistributions in binary form must reproduce the above copyright
|
|
* * notice, this list of conditions and the following disclaimer in the
|
|
* * documentation and/or other materials provided with the distribution.
|
|
* * 3) The name of the author may not be used to endorse or promote products
|
|
* * derived from this software without specific prior written permission.
|
|
* *
|
|
* * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESSED OR
|
|
* * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* Author: Thomas Winischhofer <thomas@winischhofer.net>
|
|
*
|
|
*/
|
|
|
|
#ifndef _SISUSB_H_
|
|
#define _SISUSB_H_
|
|
|
|
#ifdef CONFIG_COMPAT
|
|
#define SISUSB_NEW_CONFIG_COMPAT
|
|
#endif
|
|
|
|
#include <linux/mutex.h>
|
|
|
|
/* For older kernels, support for text consoles is by default
|
|
* off. To ensable text console support, change the following:
|
|
*/
|
|
#if 0
|
|
#define CONFIG_USB_SISUSBVGA_CON
|
|
#endif
|
|
|
|
/* Version Information */
|
|
|
|
#define SISUSB_VERSION 0
|
|
#define SISUSB_REVISION 0
|
|
#define SISUSB_PATCHLEVEL 8
|
|
|
|
/* Include console and mode switching code? */
|
|
|
|
#ifdef CONFIG_USB_SISUSBVGA_CON
|
|
#define INCL_SISUSB_CON 1
|
|
#endif
|
|
|
|
#include <linux/console.h>
|
|
#include <linux/vt_kern.h>
|
|
#include "sisusb_struct.h"
|
|
|
|
/* USB related */
|
|
|
|
#define SISUSB_MINOR 133 /* official */
|
|
|
|
/* Size of the sisusb input/output buffers */
|
|
#define SISUSB_IBUF_SIZE 0x01000
|
|
#define SISUSB_OBUF_SIZE 0x10000 /* fixed */
|
|
|
|
#define NUMOBUFS 8 /* max number of output buffers/output URBs */
|
|
|
|
/* About endianness:
|
|
*
|
|
* 1) I/O ports, PCI config registers. The read/write()
|
|
* calls emulate inX/outX. Hence, the data is
|
|
* expected/delivered in machine endiannes by this
|
|
* driver.
|
|
* 2) Video memory. The data is copied 1:1. There is
|
|
* no swapping. Ever. This means for userland that
|
|
* the data has to be prepared properly. (Hint:
|
|
* think graphics data format, command queue,
|
|
* hardware cursor.)
|
|
* 3) MMIO. Data is copied 1:1. MMIO must be swapped
|
|
* properly by userland.
|
|
*
|
|
*/
|
|
|
|
#ifdef __BIG_ENDIAN
|
|
#define SISUSB_CORRECT_ENDIANNESS_PACKET(p) \
|
|
do { \
|
|
p->header = cpu_to_le16(p->header); \
|
|
p->address = cpu_to_le32(p->address); \
|
|
p->data = cpu_to_le32(p->data); \
|
|
} while(0)
|
|
#else
|
|
#define SISUSB_CORRECT_ENDIANNESS_PACKET(p)
|
|
#endif
|
|
|
|
struct sisusb_usb_data;
|
|
|
|
struct sisusb_urb_context { /* urb->context for outbound bulk URBs */
|
|
struct sisusb_usb_data *sisusb;
|
|
int urbindex;
|
|
int *actual_length;
|
|
};
|
|
|
|
struct sisusb_usb_data {
|
|
struct usb_device *sisusb_dev;
|
|
struct usb_interface *interface;
|
|
struct kref kref;
|
|
wait_queue_head_t wait_q; /* for syncind and timeouts */
|
|
struct mutex lock; /* general race avoidance */
|
|
unsigned int ifnum; /* interface number of the USB device */
|
|
int minor; /* minor (for logging clarity) */
|
|
int isopen; /* !=0 if open */
|
|
int present; /* !=0 if device is present on the bus */
|
|
int ready; /* !=0 if device is ready for userland */
|
|
#ifdef SISUSB_OLD_CONFIG_COMPAT
|
|
int ioctl32registered;
|
|
#endif
|
|
int numobufs; /* number of obufs = number of out urbs */
|
|
char *obuf[NUMOBUFS], *ibuf; /* transfer buffers */
|
|
int obufsize, ibufsize;
|
|
dma_addr_t transfer_dma_out[NUMOBUFS];
|
|
dma_addr_t transfer_dma_in;
|
|
struct urb *sisurbout[NUMOBUFS];
|
|
struct urb *sisurbin;
|
|
unsigned char urbstatus[NUMOBUFS];
|
|
unsigned char completein;
|
|
struct sisusb_urb_context urbout_context[NUMOBUFS];
|
|
unsigned long flagb0;
|
|
unsigned long vrambase; /* framebuffer base */
|
|
unsigned int vramsize; /* framebuffer size (bytes) */
|
|
unsigned long mmiobase;
|
|
unsigned int mmiosize;
|
|
unsigned long ioportbase;
|
|
unsigned char devinit; /* device initialized? */
|
|
unsigned char gfxinit; /* graphics core initialized? */
|
|
unsigned short chipid, chipvendor;
|
|
unsigned short chiprevision;
|
|
#ifdef INCL_SISUSB_CON
|
|
struct SiS_Private *SiS_Pr;
|
|
unsigned long scrbuf;
|
|
unsigned int scrbuf_size;
|
|
int haveconsole, con_first, con_last;
|
|
int havethisconsole[MAX_NR_CONSOLES];
|
|
int textmodedestroyed;
|
|
unsigned int sisusb_num_columns; /* real number, not vt's idea */
|
|
int cur_start_addr, con_rolled_over;
|
|
int sisusb_cursor_loc, bad_cursor_pos;
|
|
int sisusb_cursor_size_from;
|
|
int sisusb_cursor_size_to;
|
|
int current_font_height, current_font_512;
|
|
int font_backup_size, font_backup_height, font_backup_512;
|
|
char *font_backup;
|
|
int font_slot;
|
|
struct vc_data *sisusb_display_fg;
|
|
int is_gfx;
|
|
int con_blanked;
|
|
#endif
|
|
};
|
|
|
|
#define to_sisusb_dev(d) container_of(d, struct sisusb_usb_data, kref)
|
|
|
|
/* USB transport related */
|
|
|
|
/* urbstatus */
|
|
#define SU_URB_BUSY 1
|
|
#define SU_URB_ALLOC 2
|
|
|
|
/* Endpoints */
|
|
|
|
#define SISUSB_EP_GFX_IN 0x0e /* gfx std packet out(0e)/in(8e) */
|
|
#define SISUSB_EP_GFX_OUT 0x0e
|
|
|
|
#define SISUSB_EP_GFX_BULK_OUT 0x01 /* gfx mem bulk out/in */
|
|
#define SISUSB_EP_GFX_BULK_IN 0x02 /* ? 2 is "OUT" ? */
|
|
|
|
#define SISUSB_EP_GFX_LBULK_OUT 0x03 /* gfx large mem bulk out */
|
|
|
|
#define SISUSB_EP_UNKNOWN_04 0x04 /* ? 4 is "OUT" ? - unused */
|
|
|
|
#define SISUSB_EP_BRIDGE_IN 0x0d /* Net2280 out(0d)/in(8d) */
|
|
#define SISUSB_EP_BRIDGE_OUT 0x0d
|
|
|
|
#define SISUSB_TYPE_MEM 0
|
|
#define SISUSB_TYPE_IO 1
|
|
|
|
struct sisusb_packet {
|
|
unsigned short header;
|
|
u32 address;
|
|
u32 data;
|
|
} __attribute__((__packed__));
|
|
|
|
#define CLEARPACKET(packet) memset(packet, 0, 10)
|
|
|
|
/* PCI bridge related */
|
|
|
|
#define SISUSB_PCI_MEMBASE 0xd0000000
|
|
#define SISUSB_PCI_MMIOBASE 0xe4000000
|
|
#define SISUSB_PCI_IOPORTBASE 0x0000d000
|
|
|
|
#define SISUSB_PCI_PSEUDO_MEMBASE 0x10000000
|
|
#define SISUSB_PCI_PSEUDO_MMIOBASE 0x20000000
|
|
#define SISUSB_PCI_PSEUDO_IOPORTBASE 0x0000d000
|
|
#define SISUSB_PCI_PSEUDO_PCIBASE 0x00010000
|
|
|
|
#define SISUSB_PCI_MMIOSIZE (128*1024)
|
|
#define SISUSB_PCI_PCONFSIZE 0x5c
|
|
|
|
/* graphics core related */
|
|
|
|
#define AROFFSET 0x40
|
|
#define ARROFFSET 0x41
|
|
#define GROFFSET 0x4e
|
|
#define SROFFSET 0x44
|
|
#define CROFFSET 0x54
|
|
#define MISCROFFSET 0x4c
|
|
#define MISCWOFFSET 0x42
|
|
#define INPUTSTATOFFSET 0x5A
|
|
#define PART1OFFSET 0x04
|
|
#define PART2OFFSET 0x10
|
|
#define PART3OFFSET 0x12
|
|
#define PART4OFFSET 0x14
|
|
#define PART5OFFSET 0x16
|
|
#define CAPTUREOFFSET 0x00
|
|
#define VIDEOOFFSET 0x02
|
|
#define COLREGOFFSET 0x48
|
|
#define PELMASKOFFSET 0x46
|
|
#define VGAENABLE 0x43
|
|
|
|
#define SISAR SISUSB_PCI_IOPORTBASE + AROFFSET
|
|
#define SISARR SISUSB_PCI_IOPORTBASE + ARROFFSET
|
|
#define SISGR SISUSB_PCI_IOPORTBASE + GROFFSET
|
|
#define SISSR SISUSB_PCI_IOPORTBASE + SROFFSET
|
|
#define SISCR SISUSB_PCI_IOPORTBASE + CROFFSET
|
|
#define SISMISCR SISUSB_PCI_IOPORTBASE + MISCROFFSET
|
|
#define SISMISCW SISUSB_PCI_IOPORTBASE + MISCWOFFSET
|
|
#define SISINPSTAT SISUSB_PCI_IOPORTBASE + INPUTSTATOFFSET
|
|
#define SISPART1 SISUSB_PCI_IOPORTBASE + PART1OFFSET
|
|
#define SISPART2 SISUSB_PCI_IOPORTBASE + PART2OFFSET
|
|
#define SISPART3 SISUSB_PCI_IOPORTBASE + PART3OFFSET
|
|
#define SISPART4 SISUSB_PCI_IOPORTBASE + PART4OFFSET
|
|
#define SISPART5 SISUSB_PCI_IOPORTBASE + PART5OFFSET
|
|
#define SISCAP SISUSB_PCI_IOPORTBASE + CAPTUREOFFSET
|
|
#define SISVID SISUSB_PCI_IOPORTBASE + VIDEOOFFSET
|
|
#define SISCOLIDXR SISUSB_PCI_IOPORTBASE + COLREGOFFSET - 1
|
|
#define SISCOLIDX SISUSB_PCI_IOPORTBASE + COLREGOFFSET
|
|
#define SISCOLDATA SISUSB_PCI_IOPORTBASE + COLREGOFFSET + 1
|
|
#define SISCOL2IDX SISPART5
|
|
#define SISCOL2DATA SISPART5 + 1
|
|
#define SISPEL SISUSB_PCI_IOPORTBASE + PELMASKOFFSET
|
|
#define SISVGAEN SISUSB_PCI_IOPORTBASE + VGAENABLE
|
|
#define SISDACA SISCOLIDX
|
|
#define SISDACD SISCOLDATA
|
|
|
|
/* ioctl related */
|
|
|
|
/* Structure argument for SISUSB_GET_INFO ioctl */
|
|
struct sisusb_info {
|
|
__u32 sisusb_id; /* for identifying sisusb */
|
|
#define SISUSB_ID 0x53495355 /* Identify myself with 'SISU' */
|
|
__u8 sisusb_version;
|
|
__u8 sisusb_revision;
|
|
__u8 sisusb_patchlevel;
|
|
__u8 sisusb_gfxinit; /* graphics core initialized? */
|
|
|
|
__u32 sisusb_vrambase;
|
|
__u32 sisusb_mmiobase;
|
|
__u32 sisusb_iobase;
|
|
__u32 sisusb_pcibase;
|
|
|
|
__u32 sisusb_vramsize; /* framebuffer size in bytes */
|
|
|
|
__u32 sisusb_minor;
|
|
|
|
__u32 sisusb_fbdevactive; /* != 0 if framebuffer device active */
|
|
|
|
__u32 sisusb_conactive; /* != 0 if console driver active */
|
|
|
|
__u8 sisusb_reserved[28]; /* for future use */
|
|
};
|
|
|
|
struct sisusb_command {
|
|
__u8 operation; /* see below */
|
|
__u8 data0; /* operation dependent */
|
|
__u8 data1; /* operation dependent */
|
|
__u8 data2; /* operation dependent */
|
|
__u32 data3; /* operation dependent */
|
|
__u32 data4; /* for future use */
|
|
};
|
|
|
|
#define SUCMD_GET 0x01 /* for all: data0 = index, data3 = port */
|
|
#define SUCMD_SET 0x02 /* data1 = value */
|
|
#define SUCMD_SETOR 0x03 /* data1 = or */
|
|
#define SUCMD_SETAND 0x04 /* data1 = and */
|
|
#define SUCMD_SETANDOR 0x05 /* data1 = and, data2 = or */
|
|
#define SUCMD_SETMASK 0x06 /* data1 = data, data2 = mask */
|
|
|
|
#define SUCMD_CLRSCR 0x07 /* data0:1:2 = length, data3 = address */
|
|
|
|
#define SUCMD_HANDLETEXTMODE 0x08 /* Reset/destroy text mode */
|
|
|
|
#define SUCMD_SETMODE 0x09 /* Set a display mode (data3 = SiS mode) */
|
|
#define SUCMD_SETVESAMODE 0x0a /* Set a display mode (data3 = VESA mode) */
|
|
|
|
#define SISUSB_COMMAND _IOWR(0xF3,0x3D,struct sisusb_command)
|
|
#define SISUSB_GET_CONFIG_SIZE _IOR(0xF3,0x3E,__u32)
|
|
#define SISUSB_GET_CONFIG _IOR(0xF3,0x3F,struct sisusb_info)
|
|
|
|
|
|
#endif /* SISUSB_H */
|
|
|