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d2fb1bb32b
This patch falls out of my work to fix usbmon so it uses virtual addresses. It is not necessary, the "new" usbmon should work just fine with sisusbvga. However, it seems ridiculous that anyone would use uncached memory to transfer bulk data. Dropping the unnecessary use of usb_buffer_alloc should be beneficial here, in case anyone ever uses the dongle on anything beyond x86. I had no success in raising the author of the driver by e-mail, so the patch is not actually tested. Signed-off-by: Pete Zaitcev <zaitcev@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
312 lines
9.8 KiB
C
312 lines
9.8 KiB
C
/*
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* sisusb - usb kernel driver for Net2280/SiS315 based USB2VGA dongles
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*
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* Copyright (C) 2005 by Thomas Winischhofer, Vienna, Austria
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*
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* If distributed as part of the Linux kernel, this code is licensed under the
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* terms of the GPL v2.
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*
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* Otherwise, the following license terms apply:
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1) Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2) Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3) The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESSED OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Author: Thomas Winischhofer <thomas@winischhofer.net>
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*
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*/
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#ifndef _SISUSB_H_
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#define _SISUSB_H_
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#ifdef CONFIG_COMPAT
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#define SISUSB_NEW_CONFIG_COMPAT
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#endif
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#include <linux/mutex.h>
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/* For older kernels, support for text consoles is by default
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* off. To enable text console support, change the following:
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*/
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/* #define CONFIG_USB_SISUSBVGA_CON */
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/* Version Information */
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#define SISUSB_VERSION 0
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#define SISUSB_REVISION 0
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#define SISUSB_PATCHLEVEL 8
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/* Include console and mode switching code? */
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#ifdef CONFIG_USB_SISUSBVGA_CON
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#define INCL_SISUSB_CON 1
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#endif
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#include <linux/console.h>
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#include <linux/vt_kern.h>
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#include "sisusb_struct.h"
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/* USB related */
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#define SISUSB_MINOR 133 /* official */
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/* Size of the sisusb input/output buffers */
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#define SISUSB_IBUF_SIZE 0x01000
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#define SISUSB_OBUF_SIZE 0x10000 /* fixed */
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#define NUMOBUFS 8 /* max number of output buffers/output URBs */
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/* About endianness:
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*
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* 1) I/O ports, PCI config registers. The read/write()
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* calls emulate inX/outX. Hence, the data is
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* expected/delivered in machine endiannes by this
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* driver.
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* 2) Video memory. The data is copied 1:1. There is
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* no swapping. Ever. This means for userland that
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* the data has to be prepared properly. (Hint:
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* think graphics data format, command queue,
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* hardware cursor.)
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* 3) MMIO. Data is copied 1:1. MMIO must be swapped
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* properly by userland.
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*
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*/
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#ifdef __BIG_ENDIAN
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#define SISUSB_CORRECT_ENDIANNESS_PACKET(p) \
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do { \
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p->header = cpu_to_le16(p->header); \
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p->address = cpu_to_le32(p->address); \
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p->data = cpu_to_le32(p->data); \
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} while(0)
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#else
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#define SISUSB_CORRECT_ENDIANNESS_PACKET(p)
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#endif
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struct sisusb_usb_data;
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struct sisusb_urb_context { /* urb->context for outbound bulk URBs */
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struct sisusb_usb_data *sisusb;
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int urbindex;
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int *actual_length;
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};
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struct sisusb_usb_data {
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struct usb_device *sisusb_dev;
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struct usb_interface *interface;
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struct kref kref;
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wait_queue_head_t wait_q; /* for syncind and timeouts */
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struct mutex lock; /* general race avoidance */
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unsigned int ifnum; /* interface number of the USB device */
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int minor; /* minor (for logging clarity) */
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int isopen; /* !=0 if open */
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int present; /* !=0 if device is present on the bus */
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int ready; /* !=0 if device is ready for userland */
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int numobufs; /* number of obufs = number of out urbs */
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char *obuf[NUMOBUFS], *ibuf; /* transfer buffers */
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int obufsize, ibufsize;
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struct urb *sisurbout[NUMOBUFS];
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struct urb *sisurbin;
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unsigned char urbstatus[NUMOBUFS];
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unsigned char completein;
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struct sisusb_urb_context urbout_context[NUMOBUFS];
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unsigned long flagb0;
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unsigned long vrambase; /* framebuffer base */
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unsigned int vramsize; /* framebuffer size (bytes) */
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unsigned long mmiobase;
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unsigned int mmiosize;
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unsigned long ioportbase;
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unsigned char devinit; /* device initialized? */
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unsigned char gfxinit; /* graphics core initialized? */
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unsigned short chipid, chipvendor;
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unsigned short chiprevision;
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#ifdef INCL_SISUSB_CON
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struct SiS_Private *SiS_Pr;
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unsigned long scrbuf;
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unsigned int scrbuf_size;
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int haveconsole, con_first, con_last;
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int havethisconsole[MAX_NR_CONSOLES];
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int textmodedestroyed;
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unsigned int sisusb_num_columns; /* real number, not vt's idea */
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int cur_start_addr, con_rolled_over;
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int sisusb_cursor_loc, bad_cursor_pos;
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int sisusb_cursor_size_from;
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int sisusb_cursor_size_to;
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int current_font_height, current_font_512;
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int font_backup_size, font_backup_height, font_backup_512;
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char *font_backup;
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int font_slot;
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struct vc_data *sisusb_display_fg;
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int is_gfx;
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int con_blanked;
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#endif
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};
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#define to_sisusb_dev(d) container_of(d, struct sisusb_usb_data, kref)
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/* USB transport related */
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/* urbstatus */
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#define SU_URB_BUSY 1
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#define SU_URB_ALLOC 2
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/* Endpoints */
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#define SISUSB_EP_GFX_IN 0x0e /* gfx std packet out(0e)/in(8e) */
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#define SISUSB_EP_GFX_OUT 0x0e
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#define SISUSB_EP_GFX_BULK_OUT 0x01 /* gfx mem bulk out/in */
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#define SISUSB_EP_GFX_BULK_IN 0x02 /* ? 2 is "OUT" ? */
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#define SISUSB_EP_GFX_LBULK_OUT 0x03 /* gfx large mem bulk out */
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#define SISUSB_EP_UNKNOWN_04 0x04 /* ? 4 is "OUT" ? - unused */
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#define SISUSB_EP_BRIDGE_IN 0x0d /* Net2280 out(0d)/in(8d) */
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#define SISUSB_EP_BRIDGE_OUT 0x0d
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#define SISUSB_TYPE_MEM 0
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#define SISUSB_TYPE_IO 1
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struct sisusb_packet {
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unsigned short header;
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u32 address;
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u32 data;
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} __attribute__ ((__packed__));
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#define CLEARPACKET(packet) memset(packet, 0, 10)
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/* PCI bridge related */
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#define SISUSB_PCI_MEMBASE 0xd0000000
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#define SISUSB_PCI_MMIOBASE 0xe4000000
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#define SISUSB_PCI_IOPORTBASE 0x0000d000
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#define SISUSB_PCI_PSEUDO_MEMBASE 0x10000000
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#define SISUSB_PCI_PSEUDO_MMIOBASE 0x20000000
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#define SISUSB_PCI_PSEUDO_IOPORTBASE 0x0000d000
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#define SISUSB_PCI_PSEUDO_PCIBASE 0x00010000
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#define SISUSB_PCI_MMIOSIZE (128*1024)
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#define SISUSB_PCI_PCONFSIZE 0x5c
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/* graphics core related */
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#define AROFFSET 0x40
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#define ARROFFSET 0x41
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#define GROFFSET 0x4e
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#define SROFFSET 0x44
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#define CROFFSET 0x54
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#define MISCROFFSET 0x4c
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#define MISCWOFFSET 0x42
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#define INPUTSTATOFFSET 0x5A
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#define PART1OFFSET 0x04
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#define PART2OFFSET 0x10
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#define PART3OFFSET 0x12
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#define PART4OFFSET 0x14
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#define PART5OFFSET 0x16
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#define CAPTUREOFFSET 0x00
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#define VIDEOOFFSET 0x02
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#define COLREGOFFSET 0x48
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#define PELMASKOFFSET 0x46
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#define VGAENABLE 0x43
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#define SISAR SISUSB_PCI_IOPORTBASE + AROFFSET
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#define SISARR SISUSB_PCI_IOPORTBASE + ARROFFSET
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#define SISGR SISUSB_PCI_IOPORTBASE + GROFFSET
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#define SISSR SISUSB_PCI_IOPORTBASE + SROFFSET
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#define SISCR SISUSB_PCI_IOPORTBASE + CROFFSET
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#define SISMISCR SISUSB_PCI_IOPORTBASE + MISCROFFSET
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#define SISMISCW SISUSB_PCI_IOPORTBASE + MISCWOFFSET
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#define SISINPSTAT SISUSB_PCI_IOPORTBASE + INPUTSTATOFFSET
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#define SISPART1 SISUSB_PCI_IOPORTBASE + PART1OFFSET
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#define SISPART2 SISUSB_PCI_IOPORTBASE + PART2OFFSET
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#define SISPART3 SISUSB_PCI_IOPORTBASE + PART3OFFSET
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#define SISPART4 SISUSB_PCI_IOPORTBASE + PART4OFFSET
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#define SISPART5 SISUSB_PCI_IOPORTBASE + PART5OFFSET
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#define SISCAP SISUSB_PCI_IOPORTBASE + CAPTUREOFFSET
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#define SISVID SISUSB_PCI_IOPORTBASE + VIDEOOFFSET
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#define SISCOLIDXR SISUSB_PCI_IOPORTBASE + COLREGOFFSET - 1
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#define SISCOLIDX SISUSB_PCI_IOPORTBASE + COLREGOFFSET
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#define SISCOLDATA SISUSB_PCI_IOPORTBASE + COLREGOFFSET + 1
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#define SISCOL2IDX SISPART5
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#define SISCOL2DATA SISPART5 + 1
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#define SISPEL SISUSB_PCI_IOPORTBASE + PELMASKOFFSET
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#define SISVGAEN SISUSB_PCI_IOPORTBASE + VGAENABLE
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#define SISDACA SISCOLIDX
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#define SISDACD SISCOLDATA
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/* ioctl related */
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/* Structure argument for SISUSB_GET_INFO ioctl */
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struct sisusb_info {
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__u32 sisusb_id; /* for identifying sisusb */
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#define SISUSB_ID 0x53495355 /* Identify myself with 'SISU' */
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__u8 sisusb_version;
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__u8 sisusb_revision;
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__u8 sisusb_patchlevel;
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__u8 sisusb_gfxinit; /* graphics core initialized? */
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__u32 sisusb_vrambase;
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__u32 sisusb_mmiobase;
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__u32 sisusb_iobase;
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__u32 sisusb_pcibase;
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__u32 sisusb_vramsize; /* framebuffer size in bytes */
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__u32 sisusb_minor;
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__u32 sisusb_fbdevactive; /* != 0 if framebuffer device active */
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__u32 sisusb_conactive; /* != 0 if console driver active */
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__u8 sisusb_reserved[28]; /* for future use */
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};
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struct sisusb_command {
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__u8 operation; /* see below */
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__u8 data0; /* operation dependent */
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__u8 data1; /* operation dependent */
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__u8 data2; /* operation dependent */
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__u32 data3; /* operation dependent */
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__u32 data4; /* for future use */
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};
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#define SUCMD_GET 0x01 /* for all: data0 = index, data3 = port */
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#define SUCMD_SET 0x02 /* data1 = value */
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#define SUCMD_SETOR 0x03 /* data1 = or */
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#define SUCMD_SETAND 0x04 /* data1 = and */
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#define SUCMD_SETANDOR 0x05 /* data1 = and, data2 = or */
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#define SUCMD_SETMASK 0x06 /* data1 = data, data2 = mask */
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#define SUCMD_CLRSCR 0x07 /* data0:1:2 = length, data3 = address */
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#define SUCMD_HANDLETEXTMODE 0x08 /* Reset/destroy text mode */
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#define SUCMD_SETMODE 0x09 /* Set a display mode (data3 = SiS mode) */
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#define SUCMD_SETVESAMODE 0x0a /* Set a display mode (data3 = VESA mode) */
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#define SISUSB_COMMAND _IOWR(0xF3,0x3D,struct sisusb_command)
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#define SISUSB_GET_CONFIG_SIZE _IOR(0xF3,0x3E,__u32)
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#define SISUSB_GET_CONFIG _IOR(0xF3,0x3F,struct sisusb_info)
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#endif /* SISUSB_H */
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