Current Path : /sys/dev/fb/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
Current File : //sys/dev/fb/fb.c |
/*- * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp> * All rights reserved. * * 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 as * the first lines of this file unmodified. * 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 AUTHORS ``AS IS'' AND ANY EXPRESS 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 AUTHORS 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. */ #include <sys/cdefs.h> __FBSDID("$FreeBSD: release/9.1.0/sys/dev/fb/fb.c 229093 2011-12-31 14:12:12Z hselasky $"); #include "opt_fb.h" #include <sys/param.h> #include <sys/systm.h> #include <sys/conf.h> #include <sys/bus.h> #include <sys/kernel.h> #include <sys/malloc.h> #include <sys/module.h> #include <sys/uio.h> #include <sys/fbio.h> #include <sys/linker_set.h> #include <vm/vm.h> #include <vm/pmap.h> #include <dev/fb/fbreg.h> SET_DECLARE(videodriver_set, const video_driver_t); /* local arrays */ /* * We need at least one entry each in order to initialize a video card * for the kernel console. The arrays will be increased dynamically * when necessary. */ static int vid_malloc; static int adapters = 1; static video_adapter_t *adp_ini; static video_adapter_t **adapter = &adp_ini; static video_switch_t *vidsw_ini; video_switch_t **vidsw = &vidsw_ini; #ifdef FB_INSTALL_CDEV static struct cdevsw *vidcdevsw_ini; static struct cdevsw **vidcdevsw = &vidcdevsw_ini; #endif #define ARRAY_DELTA 4 static int vid_realloc_array(void) { video_adapter_t **new_adp; video_switch_t **new_vidsw; #ifdef FB_INSTALL_CDEV struct cdevsw **new_cdevsw; #endif int newsize; int s; if (!vid_malloc) return ENOMEM; s = spltty(); newsize = ((adapters + ARRAY_DELTA)/ARRAY_DELTA)*ARRAY_DELTA; new_adp = malloc(sizeof(*new_adp)*newsize, M_DEVBUF, M_WAITOK | M_ZERO); new_vidsw = malloc(sizeof(*new_vidsw)*newsize, M_DEVBUF, M_WAITOK | M_ZERO); #ifdef FB_INSTALL_CDEV new_cdevsw = malloc(sizeof(*new_cdevsw)*newsize, M_DEVBUF, M_WAITOK | M_ZERO); #endif bcopy(adapter, new_adp, sizeof(*adapter)*adapters); bcopy(vidsw, new_vidsw, sizeof(*vidsw)*adapters); #ifdef FB_INSTALL_CDEV bcopy(vidcdevsw, new_cdevsw, sizeof(*vidcdevsw)*adapters); #endif if (adapters > 1) { free(adapter, M_DEVBUF); free(vidsw, M_DEVBUF); #ifdef FB_INSTALL_CDEV free(vidcdevsw, M_DEVBUF); #endif } adapter = new_adp; vidsw = new_vidsw; #ifdef FB_INSTALL_CDEV vidcdevsw = new_cdevsw; #endif adapters = newsize; splx(s); if (bootverbose) printf("fb: new array size %d\n", adapters); return 0; } static void vid_malloc_init(void *arg) { vid_malloc = TRUE; } SYSINIT(vid_mem, SI_SUB_KMEM, SI_ORDER_ANY, vid_malloc_init, NULL); /* * Low-level frame buffer driver functions * frame buffer subdrivers, such as the VGA driver, call these functions * to initialize the video_adapter structure and register it to the virtual * frame buffer driver `fb'. */ /* initialize the video_adapter_t structure */ void vid_init_struct(video_adapter_t *adp, char *name, int type, int unit) { adp->va_flags = 0; adp->va_name = name; adp->va_type = type; adp->va_unit = unit; } /* Register a video adapter */ int vid_register(video_adapter_t *adp) { const video_driver_t **list; const video_driver_t *p; int index; for (index = 0; index < adapters; ++index) { if (adapter[index] == NULL) break; } if (index >= adapters) { if (vid_realloc_array()) return -1; } adp->va_index = index; adp->va_token = NULL; SET_FOREACH(list, videodriver_set) { p = *list; if (strcmp(p->name, adp->va_name) == 0) { adapter[index] = adp; vidsw[index] = p->vidsw; return index; } } return -1; } int vid_unregister(video_adapter_t *adp) { if ((adp->va_index < 0) || (adp->va_index >= adapters)) return ENOENT; if (adapter[adp->va_index] != adp) return ENOENT; adapter[adp->va_index] = NULL; vidsw[adp->va_index] = NULL; return 0; } /* Get video I/O function table */ video_switch_t *vid_get_switch(char *name) { const video_driver_t **list; const video_driver_t *p; SET_FOREACH(list, videodriver_set) { p = *list; if (strcmp(p->name, name) == 0) return p->vidsw; } return NULL; } /* * Video card client functions * Video card clients, such as the console driver `syscons' and the frame * buffer cdev driver, use these functions to claim and release a card for * exclusive use. */ /* find the video card specified by a driver name and a unit number */ int vid_find_adapter(char *driver, int unit) { int i; for (i = 0; i < adapters; ++i) { if (adapter[i] == NULL) continue; if (strcmp("*", driver) && strcmp(adapter[i]->va_name, driver)) continue; if ((unit != -1) && (adapter[i]->va_unit != unit)) continue; return i; } return -1; } /* allocate a video card */ int vid_allocate(char *driver, int unit, void *id) { int index; int s; s = spltty(); index = vid_find_adapter(driver, unit); if (index >= 0) { if (adapter[index]->va_token) { splx(s); return -1; } adapter[index]->va_token = id; } splx(s); return index; } int vid_release(video_adapter_t *adp, void *id) { int error; int s; s = spltty(); if (adp->va_token == NULL) { error = EINVAL; } else if (adp->va_token != id) { error = EPERM; } else { adp->va_token = NULL; error = 0; } splx(s); return error; } /* Get a video adapter structure */ video_adapter_t *vid_get_adapter(int index) { if ((index < 0) || (index >= adapters)) return NULL; return adapter[index]; } /* Configure drivers: this is a backdoor for the console driver XXX */ int vid_configure(int flags) { const video_driver_t **list; const video_driver_t *p; SET_FOREACH(list, videodriver_set) { p = *list; if (p->configure != NULL) (*p->configure)(flags); } return 0; } /* * Virtual frame buffer cdev driver functions * The virtual frame buffer driver dispatches driver functions to * appropriate subdrivers. */ #define FB_DRIVER_NAME "fb" #ifdef FB_INSTALL_CDEV #if 0 /* experimental */ static devclass_t fb_devclass; static int fbprobe(device_t dev); static int fbattach(device_t dev); static device_method_t fb_methods[] = { DEVMETHOD(device_probe, fbprobe), DEVMETHOD(device_attach, fbattach), DEVMETHOD_END }; static driver_t fb_driver = { FB_DRIVER_NAME, fb_methods, 0, }; static int fbprobe(device_t dev) { int unit; unit = device_get_unit(dev); if (unit >= adapters) return ENXIO; if (adapter[unit] == NULL) return ENXIO; device_set_desc(dev, "generic frame buffer"); return 0; } static int fbattach(device_t dev) { printf("fbattach: about to attach children\n"); bus_generic_attach(dev); return 0; } #endif #define FB_UNIT(dev) dev2unit(dev) #define FB_MKMINOR(unit) (u) #if 0 /* experimental */ static d_open_t fbopen; static d_close_t fbclose; static d_read_t fbread; static d_write_t fbwrite; static d_ioctl_t fbioctl; static d_mmap_t fbmmap; static struct cdevsw fb_cdevsw = { .d_version = D_VERSION, .d_flags = D_NEEDGIANT, .d_open = fbopen, .d_close = fbclose, .d_read = fbread, .d_write = fbwrite, .d_ioctl = fbioctl, .d_mmap = fbmmap, .d_name = FB_DRIVER_NAME, }; #endif static int fb_modevent(module_t mod, int type, void *data) { switch (type) { case MOD_LOAD: break; case MOD_UNLOAD: printf("fb module unload - not possible for this module type\n"); return EINVAL; default: return EOPNOTSUPP; } return 0; } static moduledata_t fb_mod = { "fb", fb_modevent, NULL }; DECLARE_MODULE(fb, fb_mod, SI_SUB_PSEUDO, SI_ORDER_ANY); int fb_attach(int unit, video_adapter_t *adp, struct cdevsw *cdevsw) { int s; if (adp->va_index >= adapters) return EINVAL; if (adapter[adp->va_index] != adp) return EINVAL; s = spltty(); adp->va_minor = unit; vidcdevsw[adp->va_index] = cdevsw; splx(s); printf("fb%d at %s%d\n", adp->va_index, adp->va_name, adp->va_unit); return 0; } int fb_detach(int unit, video_adapter_t *adp, struct cdevsw *cdevsw) { int s; if (adp->va_index >= adapters) return EINVAL; if (adapter[adp->va_index] != adp) return EINVAL; if (vidcdevsw[adp->va_index] != cdevsw) return EINVAL; s = spltty(); vidcdevsw[adp->va_index] = NULL; splx(s); return 0; } /* * Generic frame buffer cdev driver functions * Frame buffer subdrivers may call these functions to implement common * driver functions. */ int genfbopen(genfb_softc_t *sc, video_adapter_t *adp, int flag, int mode, struct thread *td) { int s; s = spltty(); if (!(sc->gfb_flags & FB_OPEN)) sc->gfb_flags |= FB_OPEN; splx(s); return 0; } int genfbclose(genfb_softc_t *sc, video_adapter_t *adp, int flag, int mode, struct thread *td) { int s; s = spltty(); sc->gfb_flags &= ~FB_OPEN; splx(s); return 0; } int genfbread(genfb_softc_t *sc, video_adapter_t *adp, struct uio *uio, int flag) { int size; int offset; int error; int len; error = 0; size = adp->va_buffer_size/adp->va_info.vi_planes; while (uio->uio_resid > 0) { if (uio->uio_offset >= size) break; offset = uio->uio_offset%adp->va_window_size; len = imin(uio->uio_resid, size - uio->uio_offset); len = imin(len, adp->va_window_size - offset); if (len <= 0) break; vidd_set_win_org(adp, uio->uio_offset); error = uiomove((caddr_t)(adp->va_window + offset), len, uio); if (error) break; } return error; } int genfbwrite(genfb_softc_t *sc, video_adapter_t *adp, struct uio *uio, int flag) { return ENODEV; } int genfbioctl(genfb_softc_t *sc, video_adapter_t *adp, u_long cmd, caddr_t arg, int flag, struct thread *td) { int error; if (adp == NULL) /* XXX */ return ENXIO; error = vidd_ioctl(adp, cmd, arg); if (error == ENOIOCTL) error = ENODEV; return error; } int genfbmmap(genfb_softc_t *sc, video_adapter_t *adp, vm_ooffset_t offset, vm_offset_t *paddr, int prot, vm_memattr_t *memattr) { return vidd_mmap(adp, offset, paddr, prot, memattr); } #endif /* FB_INSTALL_CDEV */ static char *adapter_name(int type) { static struct { int type; char *name; } names[] = { { KD_MONO, "MDA" }, { KD_HERCULES, "Hercules" }, { KD_CGA, "CGA" }, { KD_EGA, "EGA" }, { KD_VGA, "VGA" }, { KD_PC98, "PC-98x1" }, { KD_TGA, "TGA" }, { -1, "Unknown" }, }; int i; for (i = 0; names[i].type != -1; ++i) if (names[i].type == type) break; return names[i].name; } /* * Generic low-level frame buffer functions * The low-level functions in the frame buffer subdriver may use these * functions. */ void fb_dump_adp_info(char *driver, video_adapter_t *adp, int level) { if (level <= 0) return; printf("%s%d: %s%d, %s, type:%s (%d), flags:0x%x\n", FB_DRIVER_NAME, adp->va_index, driver, adp->va_unit, adp->va_name, adapter_name(adp->va_type), adp->va_type, adp->va_flags); printf("%s%d: port:0x%lx-0x%lx, crtc:0x%lx, mem:0x%lx 0x%x\n", FB_DRIVER_NAME, adp->va_index, (u_long)adp->va_io_base, (u_long)adp->va_io_base + adp->va_io_size - 1, (u_long)adp->va_crtc_addr, (u_long)adp->va_mem_base, adp->va_mem_size); printf("%s%d: init mode:%d, bios mode:%d, current mode:%d\n", FB_DRIVER_NAME, adp->va_index, adp->va_initial_mode, adp->va_initial_bios_mode, adp->va_mode); printf("%s%d: window:%p size:%dk gran:%dk, buf:%p size:%dk\n", FB_DRIVER_NAME, adp->va_index, (void *)adp->va_window, (int)adp->va_window_size/1024, (int)adp->va_window_gran/1024, (void *)adp->va_buffer, (int)adp->va_buffer_size/1024); } void fb_dump_mode_info(char *driver, video_adapter_t *adp, video_info_t *info, int level) { if (level <= 0) return; printf("%s%d: %s, mode:%d, flags:0x%x ", driver, adp->va_unit, adp->va_name, info->vi_mode, info->vi_flags); if (info->vi_flags & V_INFO_GRAPHICS) printf("G %dx%dx%d, %d plane(s), font:%dx%d, ", info->vi_width, info->vi_height, info->vi_depth, info->vi_planes, info->vi_cwidth, info->vi_cheight); else printf("T %dx%d, font:%dx%d, ", info->vi_width, info->vi_height, info->vi_cwidth, info->vi_cheight); printf("win:0x%lx\n", (u_long)info->vi_window); } int fb_type(int adp_type) { static struct { int fb_type; int va_type; } types[] = { { FBTYPE_MDA, KD_MONO }, { FBTYPE_HERCULES, KD_HERCULES }, { FBTYPE_CGA, KD_CGA }, { FBTYPE_EGA, KD_EGA }, { FBTYPE_VGA, KD_VGA }, { FBTYPE_PC98, KD_PC98 }, { FBTYPE_TGA, KD_TGA }, }; int i; for (i = 0; i < sizeof(types)/sizeof(types[0]); ++i) { if (types[i].va_type == adp_type) return types[i].fb_type; } return -1; } int fb_commonioctl(video_adapter_t *adp, u_long cmd, caddr_t arg) { int error; int s; /* assert(adp != NULL) */ error = 0; s = spltty(); switch (cmd) { case FBIO_ADAPTER: /* get video adapter index */ *(int *)arg = adp->va_index; break; case FBIO_ADPTYPE: /* get video adapter type */ *(int *)arg = adp->va_type; break; case FBIO_ADPINFO: /* get video adapter info */ ((video_adapter_info_t *)arg)->va_index = adp->va_index; ((video_adapter_info_t *)arg)->va_type = adp->va_type; bcopy(adp->va_name, ((video_adapter_info_t *)arg)->va_name, imin(strlen(adp->va_name) + 1, sizeof(((video_adapter_info_t *)arg)->va_name))); ((video_adapter_info_t *)arg)->va_unit = adp->va_unit; ((video_adapter_info_t *)arg)->va_flags = adp->va_flags; ((video_adapter_info_t *)arg)->va_io_base = adp->va_io_base; ((video_adapter_info_t *)arg)->va_io_size = adp->va_io_size; ((video_adapter_info_t *)arg)->va_crtc_addr = adp->va_crtc_addr; ((video_adapter_info_t *)arg)->va_mem_base = adp->va_mem_base; ((video_adapter_info_t *)arg)->va_mem_size = adp->va_mem_size; ((video_adapter_info_t *)arg)->va_window #if defined(__amd64__) || defined(__i386__) = vtophys(adp->va_window); #else = adp->va_window; #endif ((video_adapter_info_t *)arg)->va_window_size = adp->va_window_size; ((video_adapter_info_t *)arg)->va_window_gran = adp->va_window_gran; ((video_adapter_info_t *)arg)->va_window_orig = adp->va_window_orig; ((video_adapter_info_t *)arg)->va_unused0 #if defined(__amd64__) || defined(__i386__) = adp->va_buffer != 0 ? vtophys(adp->va_buffer) : 0; #else = adp->va_buffer; #endif ((video_adapter_info_t *)arg)->va_buffer_size = adp->va_buffer_size; ((video_adapter_info_t *)arg)->va_mode = adp->va_mode; ((video_adapter_info_t *)arg)->va_initial_mode = adp->va_initial_mode; ((video_adapter_info_t *)arg)->va_initial_bios_mode = adp->va_initial_bios_mode; ((video_adapter_info_t *)arg)->va_line_width = adp->va_line_width; ((video_adapter_info_t *)arg)->va_disp_start.x = adp->va_disp_start.x; ((video_adapter_info_t *)arg)->va_disp_start.y = adp->va_disp_start.y; break; case FBIO_MODEINFO: /* get mode information */ error = vidd_get_info(adp, ((video_info_t *)arg)->vi_mode, (video_info_t *)arg); if (error) error = ENODEV; break; case FBIO_FINDMODE: /* find a matching video mode */ error = vidd_query_mode(adp, (video_info_t *)arg); break; case FBIO_GETMODE: /* get video mode */ *(int *)arg = adp->va_mode; break; case FBIO_SETMODE: /* set video mode */ error = vidd_set_mode(adp, *(int *)arg); if (error) error = ENODEV; /* EINVAL? */ break; case FBIO_GETWINORG: /* get frame buffer window origin */ *(u_int *)arg = adp->va_window_orig; break; case FBIO_GETDISPSTART: /* get display start address */ ((video_display_start_t *)arg)->x = adp->va_disp_start.x; ((video_display_start_t *)arg)->y = adp->va_disp_start.y; break; case FBIO_GETLINEWIDTH: /* get scan line width in bytes */ *(u_int *)arg = adp->va_line_width; break; case FBIO_BLANK: /* blank display */ error = vidd_blank_display(adp, *(int *)arg); break; case FBIO_GETPALETTE: /* get color palette */ case FBIO_SETPALETTE: /* set color palette */ /* XXX */ case FBIOPUTCMAP: case FBIOGETCMAP: case FBIOPUTCMAPI: case FBIOGETCMAPI: /* XXX */ case FBIO_SETWINORG: /* set frame buffer window origin */ case FBIO_SETDISPSTART: /* set display start address */ case FBIO_SETLINEWIDTH: /* set scan line width in pixel */ case FBIOGTYPE: case FBIOGATTR: case FBIOSVIDEO: case FBIOGVIDEO: case FBIOVERTICAL: case FBIOSCURSOR: case FBIOGCURSOR: case FBIOSCURPOS: case FBIOGCURPOS: case FBIOGCURMAX: case FBIOMONINFO: case FBIOGXINFO: default: error = ENODEV; break; } splx(s); return error; }