vga_isa.c revision 142833
143105Sdfr/*- 243105Sdfr * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp> 343105Sdfr * All rights reserved. 443105Sdfr * 543105Sdfr * Redistribution and use in source and binary forms, with or without 643105Sdfr * modification, are permitted provided that the following conditions 743105Sdfr * are met: 843105Sdfr * 1. Redistributions of source code must retain the above copyright 943105Sdfr * notice, this list of conditions and the following disclaimer as 1043105Sdfr * the first lines of this file unmodified. 1143105Sdfr * 2. Redistributions in binary form must reproduce the above copyright 1243105Sdfr * notice, this list of conditions and the following disclaimer in the 1343105Sdfr * documentation and/or other materials provided with the distribution. 1443105Sdfr * 1543105Sdfr * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 1643105Sdfr * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 1743105Sdfr * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 1843105Sdfr * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 1943105Sdfr * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 2043105Sdfr * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2143105Sdfr * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2243105Sdfr * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2343105Sdfr * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 2443105Sdfr * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2543105Sdfr */ 2643105Sdfr 27116181Sobrien#include <sys/cdefs.h> 28116181Sobrien__FBSDID("$FreeBSD: head/sys/isa/vga_isa.c 142833 2005-02-28 21:06:14Z iedowse $"); 29116181Sobrien 3043105Sdfr#include "opt_vga.h" 3143105Sdfr#include "opt_fb.h" 3243105Sdfr#include "opt_syscons.h" /* should be removed in the future, XXX */ 3343105Sdfr 3443105Sdfr#include <sys/param.h> 3543105Sdfr#include <sys/systm.h> 3643105Sdfr#include <sys/kernel.h> 37142833Siedowse#include <sys/malloc.h> 38129880Sphk#include <sys/module.h> 3948104Syokota#include <sys/conf.h> 4043105Sdfr#include <sys/bus.h> 4148104Syokota#include <sys/fbio.h> 4243105Sdfr 4348104Syokota#include <machine/bus.h> 4448104Syokota#include <machine/resource.h> 4548104Syokota 4648104Syokota#include <sys/rman.h> 4748104Syokota 4843105Sdfr#include <vm/vm.h> 4943105Sdfr#include <vm/pmap.h> 5043105Sdfr 5143105Sdfr#include <machine/md_var.h> 52114384Speter#ifdef __i386__ 5343105Sdfr#include <machine/pc/bios.h> 54114384Speter#endif 5543105Sdfr 5643105Sdfr#include <dev/fb/fbreg.h> 5743105Sdfr#include <dev/fb/vgareg.h> 5843105Sdfr 5943105Sdfr#include <isa/isareg.h> 6043105Sdfr#include <isa/isavar.h> 6143105Sdfr 6248104Syokota#define VGA_SOFTC(unit) \ 6348104Syokota ((vga_softc_t *)devclass_get_softc(isavga_devclass, unit)) 6443105Sdfr 6548104Syokotastatic devclass_t isavga_devclass; 6643105Sdfr 6743105Sdfr#ifdef FB_INSTALL_CDEV 6843105Sdfr 6948104Syokotastatic d_open_t isavga_open; 7048104Syokotastatic d_close_t isavga_close; 7148104Syokotastatic d_read_t isavga_read; 7248104Syokotastatic d_write_t isavga_write; 7348104Syokotastatic d_ioctl_t isavga_ioctl; 7448104Syokotastatic d_mmap_t isavga_mmap; 7543105Sdfr 7648104Syokotastatic struct cdevsw isavga_cdevsw = { 77126080Sphk .d_version = D_VERSION, 78126080Sphk .d_flags = D_NEEDGIANT, 79111815Sphk .d_open = isavga_open, 80111815Sphk .d_close = isavga_close, 81111815Sphk .d_read = isavga_read, 82111815Sphk .d_write = isavga_write, 83111815Sphk .d_ioctl = isavga_ioctl, 84111815Sphk .d_mmap = isavga_mmap, 85111815Sphk .d_name = VGA_DRIVER_NAME, 8643105Sdfr}; 8743105Sdfr 8843105Sdfr#endif /* FB_INSTALL_CDEV */ 8943105Sdfr 9062225Speterstatic void 9162225Speterisavga_identify(driver_t *driver, device_t parent) 9262225Speter{ 9362225Speter BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, VGA_DRIVER_NAME, 0); 9462225Speter} 9562225Speter 9643105Sdfrstatic int 9743105Sdfrisavga_probe(device_t dev) 9843105Sdfr{ 9948104Syokota video_adapter_t adp; 10048104Syokota int error; 10143105Sdfr 10247618Sdfr /* No pnp support */ 10347618Sdfr if (isa_get_vendorid(dev)) 10447618Sdfr return (ENXIO); 10547618Sdfr 10643105Sdfr device_set_desc(dev, "Generic ISA VGA"); 10751052Sdfr error = vga_probe_unit(device_get_unit(dev), &adp, device_get_flags(dev)); 10848104Syokota if (error == 0) { 10952174Sdfr bus_set_resource(dev, SYS_RES_IOPORT, 0, 11048104Syokota adp.va_io_base, adp.va_io_size); 11152174Sdfr bus_set_resource(dev, SYS_RES_MEMORY, 0, 11248104Syokota adp.va_mem_base, adp.va_mem_size); 11348104Syokota#if 0 11448104Syokota isa_set_port(dev, adp.va_io_base); 11548104Syokota isa_set_portsize(dev, adp.va_io_size); 11648104Syokota isa_set_maddr(dev, adp.va_mem_base); 11748104Syokota isa_set_msize(dev, adp.va_mem_size); 11848104Syokota#endif 11948104Syokota } 12048104Syokota return error; 12143105Sdfr} 12243105Sdfr 12343105Sdfrstatic int 12443105Sdfrisavga_attach(device_t dev) 12543105Sdfr{ 12648104Syokota vga_softc_t *sc; 12748104Syokota int unit; 12848104Syokota int rid; 12948104Syokota int error; 13043105Sdfr 13148104Syokota unit = device_get_unit(dev); 13243105Sdfr sc = device_get_softc(dev); 13343105Sdfr 13448104Syokota rid = 0; 135115549Sphk bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 13648104Syokota 0, ~0, 0, RF_ACTIVE | RF_SHAREABLE); 13748104Syokota rid = 0; 138115549Sphk bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 13948104Syokota 0, ~0, 0, RF_ACTIVE | RF_SHAREABLE); 14043105Sdfr 14151052Sdfr error = vga_attach_unit(unit, sc, device_get_flags(dev)); 14243105Sdfr if (error) 14348104Syokota return error; 14443105Sdfr 14543105Sdfr#ifdef FB_INSTALL_CDEV 14643105Sdfr /* attach a virtual frame buffer device */ 147120465Sphk error = fb_attach(VGA_MKMINOR(unit), sc->adp, &isavga_cdevsw); 14843105Sdfr if (error) 14943105Sdfr return error; 15043105Sdfr#endif /* FB_INSTALL_CDEV */ 15143105Sdfr 152137148Sphk if (0 && bootverbose) 15343664Syokota (*vidsw[sc->adp->va_index]->diag)(sc->adp, bootverbose); 15443105Sdfr 15548104Syokota#if experimental 15654073Smdodd device_add_child(dev, "fb", -1); 15748104Syokota bus_generic_attach(dev); 15843105Sdfr#endif 15943105Sdfr 16048104Syokota return 0; 16143105Sdfr} 16243105Sdfr 163142833Siedowsestatic int 164142833Siedowseisavga_suspend(device_t dev) 165142833Siedowse{ 166142833Siedowse vga_softc_t *sc; 167142833Siedowse int err, nbytes; 168142833Siedowse 169142833Siedowse sc = device_get_softc(dev); 170142833Siedowse err = bus_generic_suspend(dev); 171142833Siedowse if (err) 172142833Siedowse return (err); 173142833Siedowse 174142833Siedowse /* Save the video state across the suspend. */ 175142833Siedowse if (sc->state_buf != NULL) { 176142833Siedowse free(sc->state_buf, M_TEMP); 177142833Siedowse sc->state_buf = NULL; 178142833Siedowse } 179142833Siedowse nbytes = (*vidsw[sc->adp->va_index]->save_state)(sc->adp, NULL, 0); 180142833Siedowse if (nbytes <= 0) 181142833Siedowse return (0); 182142833Siedowse sc->state_buf = malloc(nbytes, M_TEMP, M_NOWAIT | M_ZERO); 183142833Siedowse if (sc->state_buf == NULL) 184142833Siedowse return (0); 185142833Siedowse if (bootverbose) 186142833Siedowse device_printf(dev, "saving %d bytes of video state\n", nbytes); 187142833Siedowse if ((*vidsw[sc->adp->va_index]->save_state)(sc->adp, sc->state_buf, 188142833Siedowse nbytes) != 0) { 189142833Siedowse device_printf(dev, "failed to save state (nbytes=%d)\n", 190142833Siedowse nbytes); 191142833Siedowse free(sc->state_buf, M_TEMP); 192142833Siedowse sc->state_buf = NULL; 193142833Siedowse } 194142833Siedowse return (0); 195142833Siedowse} 196142833Siedowse 197142833Siedowsestatic int 198142833Siedowseisavga_resume(device_t dev) 199142833Siedowse{ 200142833Siedowse vga_softc_t *sc; 201142833Siedowse 202142833Siedowse sc = device_get_softc(dev); 203142833Siedowse if (sc->state_buf != NULL) { 204142833Siedowse if ((*vidsw[sc->adp->va_index]->load_state)(sc->adp, 205142833Siedowse sc->state_buf) != 0) 206142833Siedowse device_printf(dev, "failed to reload state\n"); 207142833Siedowse free(sc->state_buf, M_TEMP); 208142833Siedowse sc->state_buf = NULL; 209142833Siedowse } 210142833Siedowse 211142833Siedowse bus_generic_resume(dev); 212142833Siedowse return 0; 213142833Siedowse} 214142833Siedowse 21548104Syokota#ifdef FB_INSTALL_CDEV 21643105Sdfr 21743105Sdfrstatic int 218130585Sphkisavga_open(struct cdev *dev, int flag, int mode, struct thread *td) 21943105Sdfr{ 22083366Sjulian return vga_open(dev, VGA_SOFTC(VGA_UNIT(dev)), flag, mode, td); 22143105Sdfr} 22243105Sdfr 22343105Sdfrstatic int 224130585Sphkisavga_close(struct cdev *dev, int flag, int mode, struct thread *td) 22543105Sdfr{ 22683366Sjulian return vga_close(dev, VGA_SOFTC(VGA_UNIT(dev)), flag, mode, td); 22743105Sdfr} 22843105Sdfr 22943105Sdfrstatic int 230130585Sphkisavga_read(struct cdev *dev, struct uio *uio, int flag) 23143105Sdfr{ 23248104Syokota return vga_read(dev, VGA_SOFTC(VGA_UNIT(dev)), uio, flag); 23343105Sdfr} 23443105Sdfr 23543105Sdfrstatic int 236130585Sphkisavga_write(struct cdev *dev, struct uio *uio, int flag) 23743105Sdfr{ 23848104Syokota return vga_write(dev, VGA_SOFTC(VGA_UNIT(dev)), uio, flag); 23943105Sdfr} 24043105Sdfr 24143105Sdfrstatic int 242130585Sphkisavga_ioctl(struct cdev *dev, u_long cmd, caddr_t arg, int flag, struct thread *td) 24343105Sdfr{ 24483366Sjulian return vga_ioctl(dev, VGA_SOFTC(VGA_UNIT(dev)), cmd, arg, flag, td); 24543105Sdfr} 24643105Sdfr 24743105Sdfrstatic int 248130585Sphkisavga_mmap(struct cdev *dev, vm_offset_t offset, vm_paddr_t *paddr, int prot) 24943105Sdfr{ 250111462Smux return vga_mmap(dev, VGA_SOFTC(VGA_UNIT(dev)), offset, paddr, prot); 25143105Sdfr} 25243105Sdfr 25348104Syokota#endif /* FB_INSTALL_CDEV */ 25462225Speter 25562225Speterstatic device_method_t isavga_methods[] = { 25662225Speter DEVMETHOD(device_identify, isavga_identify), 25762225Speter DEVMETHOD(device_probe, isavga_probe), 25862225Speter DEVMETHOD(device_attach, isavga_attach), 259142833Siedowse DEVMETHOD(device_suspend, isavga_suspend), 260142833Siedowse DEVMETHOD(device_resume, isavga_resume), 26162225Speter 26262225Speter DEVMETHOD(bus_print_child, bus_generic_print_child), 26362225Speter { 0, 0 } 26462225Speter}; 26562225Speter 26662225Speterstatic driver_t isavga_driver = { 26762225Speter VGA_DRIVER_NAME, 26862225Speter isavga_methods, 26962225Speter sizeof(vga_softc_t), 27062225Speter}; 27162225Speter 27262225SpeterDRIVER_MODULE(vga, isa, isavga_driver, isavga_devclass, 0, 0); 273