e07f0b9362
copyin() or copyout(). uvm_useracc() tells us whether the mapping permissions allow access to the desired part of an address space, and many callers assume that this is the same as knowing whether an attempt to access that part of the address space will succeed. however, access to user space can fail for reasons other than insufficient permission, most notably that paging in any non-resident data can fail due to i/o errors. most of the callers of uvm_useracc() make the above incorrect assumption. the rest are all misguided optimizations, which optimize for the case where an operation will fail. we'd rather optimize for operations succeeding, in which case we should just attempt the access and handle failures due to insufficient permissions the same way we handle i/o errors. since there appear to be no good uses of uvm_useracc(), we'll just remove it.
142 lines
4.2 KiB
C
142 lines
4.2 KiB
C
/* $NetBSD: sticvar.h,v 1.14 2003/11/13 03:09:29 chs Exp $ */
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/*-
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* Copyright (c) 1999, 2000, 2001 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Andrew Doran.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _TC_STICVAR_H_
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#define _TC_STICVAR_H_
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#if defined(pmax)
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#define STIC_KSEG_TO_PHYS(x) MIPS_KSEG0_TO_PHYS(x)
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#elif defined(alpha)
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#define STIC_KSEG_TO_PHYS(x) ALPHA_K0SEG_TO_PHYS((vaddr_t)x)
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#else
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#error No support for your architecture
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#endif
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#define STIC_MAXDV 5
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struct stic_hwcmap256 {
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#define CMAP_SIZE 256 /* 256 R/G/B entries */
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u_int8_t r[CMAP_SIZE];
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u_int8_t g[CMAP_SIZE];
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u_int8_t b[CMAP_SIZE];
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};
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struct stic_hwcursor64 {
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struct wsdisplay_curpos cc_pos;
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struct wsdisplay_curpos cc_hot;
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struct wsdisplay_curpos cc_size;
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#define CURSOR_MAX_SIZE 64
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u_int8_t cc_color[6];
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u_int64_t cc_image[CURSOR_MAX_SIZE];
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u_int64_t cc_mask[CURSOR_MAX_SIZE];
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};
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struct stic_screen {
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struct stic_info *ss_si;
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u_int16_t *ss_backing;
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int ss_flags;
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int ss_curx;
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int ss_cury;
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};
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#define SS_ALLOCED 0x01
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#define SS_ACTIVE 0x02
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#define SS_CURENB 0x04
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struct stic_info {
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struct device *si_dv;
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u_int32_t *si_stamp;
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u_int32_t *si_buf;
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u_int32_t *si_vdac;
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u_int32_t *si_vdac_reset;
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volatile struct stic_regs *si_stic;
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volatile struct stic_xcomm *si_sxc;
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u_int32_t *(*si_pbuf_get)(struct stic_info *);
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int (*si_pbuf_post)(struct stic_info *, u_int32_t *);
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int (*si_ioctl)(struct stic_info *, u_long, caddr_t, int,
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struct proc *);
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int si_pbuf_select;
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int si_hwflags;
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struct stic_screen *si_curscreen;
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struct wsdisplay_font *si_font;
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int si_consw;
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int si_consh;
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int si_fontw;
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int si_fonth;
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int si_stamph;
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int si_stamphm;
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int si_stampw;
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int si_depth;
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int si_disptype;
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int si_dispmode;
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int si_unit;
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tc_addr_t si_slotbase;
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paddr_t si_buf_phys;
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size_t si_buf_size;
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int si_flags;
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struct stic_hwcursor64 si_cursor;
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struct stic_hwcmap256 si_cmap;
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struct callout si_switch_callout;
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void (*si_switchcb)(void *, int, int);
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void *si_switchcbarg;
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};
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#define SI_CURENB_CHANGED 0x0001
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#define SI_CURCMAP_CHANGED 0x0002
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#define SI_CURSHAPE_CHANGED 0x0004
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#define SI_CMAP_CHANGED 0x0008
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#define SI_ALL_CHANGED 0x000f
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#define SI_DVOPEN 0x0010
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void stic_init(struct stic_info *);
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void stic_attach(struct device *, struct stic_info *, int);
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void stic_cnattach(struct stic_info *);
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void stic_reset(struct stic_info *);
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void stic_flush(struct stic_info *);
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extern struct stic_info stic_consinfo;
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#endif /* !_TC_STICVAR_H_ */
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