The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/dev/fb/s3_pci.c

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    1 /*-
    2  * Copyright (c) 2000 Alcove - Nicolas Souchu <nsouch@freebsd.org>
    3  * All rights reserved.
    4  *
    5  * Code based on Peter Horton <pdh@colonel-panic.com> patch.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  */
   28 
   29 #include <sys/cdefs.h>
   30 __FBSDID("$FreeBSD: releng/10.3/sys/dev/fb/s3_pci.c 234362 2012-04-16 23:29:12Z jkim $");
   31 
   32 /* Enable LFB on S3 cards that has only VESA 1.2 BIOS */
   33 
   34 #include <sys/param.h>
   35 #include <sys/systm.h>
   36 #include <sys/kernel.h>
   37 #include <machine/bus.h>
   38 
   39 #include <vm/vm.h>
   40 #include <vm/vm_extern.h>
   41 #include <vm/vm_kern.h>
   42 #include <vm/pmap.h>
   43 
   44 #include <sys/uio.h>
   45 #include <sys/module.h>
   46 #include <sys/bus.h>
   47 #include <sys/rman.h>
   48 #include <machine/resource.h>
   49 
   50 #include <sys/malloc.h>
   51 #include <sys/fbio.h>
   52 
   53 #include <dev/pci/pcireg.h>
   54 #include <dev/pci/pcivar.h>
   55 
   56 #include <machine/md_var.h>
   57 #include <machine/pc/bios.h>
   58 #include <dev/fb/vesa.h>
   59 
   60 #include <dev/fb/fbreg.h>
   61 #include <dev/fb/vgareg.h>
   62 
   63 #define S3PCI_DEBUG 1
   64 
   65 #define PCI_S3_VENDOR_ID        0x5333
   66 
   67 #define S3_CONFIG_IO            0x3c0   /* VGA standard config io ports */
   68 #define S3_CONFIG_IO_SIZE       0x20
   69 
   70 #define S3_ENHANCED_IO          0x4ae8  /* Extended config register */
   71 #define S3_ENHANCED_IO_SIZE     1
   72 
   73 #define S3_CRTC_ADDR            0x14
   74 #define S3_CRTC_VALUE           0x15
   75 
   76 #define PCI_BASE_MEMORY         0x10
   77 
   78 #define outb_p(value, offset) bus_space_write_1(sc->st, sc->sh, offset, value)
   79 #define inb_p(offset) (bus_space_read_1(sc->st, sc->sh, offset))
   80 #define outb_enh(value, offset) bus_space_write_1(sc->enh_st, sc->enh_sh, \
   81                                                                 offset, value)
   82 #define inb_enh(offset) (bus_space_read_1(sc->enh_st, sc->enh_sh, offset))
   83 
   84 struct s3pci_softc {
   85         bus_space_tag_t st;
   86         bus_space_handle_t sh;
   87         bus_space_tag_t enh_st;
   88         bus_space_handle_t enh_sh;
   89         struct resource *port_res;
   90         struct resource *enh_res;
   91         struct resource *mem_res;
   92         u_long mem_base;
   93         u_long mem_size;
   94 };
   95 
   96 static int                      s3lfb_error(void);
   97 static vi_probe_t               s3lfb_probe;
   98 static vi_init_t                s3lfb_init;
   99 static vi_get_info_t            s3lfb_get_info;
  100 static vi_query_mode_t          s3lfb_query_mode;
  101 static vi_set_mode_t            s3lfb_set_mode;
  102 static vi_save_font_t           s3lfb_save_font;
  103 static vi_load_font_t           s3lfb_load_font;
  104 static vi_show_font_t           s3lfb_show_font;
  105 static vi_save_palette_t        s3lfb_save_palette;
  106 static vi_load_palette_t        s3lfb_load_palette;
  107 static vi_set_border_t          s3lfb_set_border;
  108 static vi_save_state_t          s3lfb_save_state;
  109 static vi_load_state_t          s3lfb_load_state;
  110 static vi_set_win_org_t         s3lfb_set_origin;
  111 static vi_read_hw_cursor_t      s3lfb_read_hw_cursor;
  112 static vi_set_hw_cursor_t       s3lfb_set_hw_cursor;
  113 static vi_set_hw_cursor_shape_t s3lfb_set_hw_cursor_shape;
  114 static vi_blank_display_t       s3lfb_blank_display;
  115 static vi_mmap_t                s3lfb_mmap;
  116 static vi_ioctl_t               s3lfb_ioctl;
  117 static vi_clear_t               s3lfb_clear;
  118 static vi_fill_rect_t           s3lfb_fill_rect;
  119 static vi_bitblt_t              s3lfb_bitblt;
  120 static vi_diag_t                s3lfb_diag;
  121 
  122 static video_switch_t s3lfbvidsw = {
  123         s3lfb_probe,
  124         s3lfb_init,
  125         s3lfb_get_info,
  126         s3lfb_query_mode,
  127         s3lfb_set_mode,
  128         s3lfb_save_font,
  129         s3lfb_load_font,
  130         s3lfb_show_font,
  131         s3lfb_save_palette,
  132         s3lfb_load_palette,
  133         s3lfb_set_border,
  134         s3lfb_save_state,
  135         s3lfb_load_state,
  136         s3lfb_set_origin,
  137         s3lfb_read_hw_cursor,
  138         s3lfb_set_hw_cursor,
  139         s3lfb_set_hw_cursor_shape,
  140         s3lfb_blank_display,
  141         s3lfb_mmap,
  142         s3lfb_ioctl,
  143         s3lfb_clear,
  144         s3lfb_fill_rect,
  145         s3lfb_bitblt,
  146         s3lfb_error,
  147         s3lfb_error,
  148         s3lfb_diag,
  149 };
  150 
  151 static video_switch_t *prevvidsw;
  152 static device_t s3pci_dev = NULL;
  153 
  154 static int
  155 s3lfb_probe(int unit, video_adapter_t **adpp, void *arg, int flags)
  156 {
  157         return (*prevvidsw->probe)(unit, adpp, arg, flags);
  158 }
  159 
  160 static int
  161 s3lfb_init(int unit, video_adapter_t *adp, int flags)
  162 {
  163         return (*prevvidsw->init)(unit, adp, flags);
  164 }
  165 
  166 static int
  167 s3lfb_get_info(video_adapter_t *adp, int mode, video_info_t *info)
  168 {
  169 #if 0
  170         device_t dev = s3pci_dev;                       /* XXX */
  171         struct s3pci_softc *sc = (struct s3pci_softc *)device_get_softc(dev);
  172 #endif
  173         int error;
  174 
  175         if ((error = (*prevvidsw->get_info)(adp, mode, info)))
  176                 return error;
  177 
  178 #if 0
  179         /* Don't use linear addressing with text modes
  180          */
  181         if ((mode > M_VESA_BASE) &&
  182                 (info->vi_flags & V_INFO_GRAPHICS) &&
  183                 !(info->vi_flags & V_INFO_LINEAR)) {
  184 
  185                 info->vi_flags |= V_INFO_LINEAR;
  186                 info->vi_buffer = sc->mem_base;
  187 
  188         } else {
  189                 info->vi_buffer = 0;
  190         }
  191 #endif
  192 
  193         return 0;
  194 }
  195 
  196 static int
  197 s3lfb_query_mode(video_adapter_t *adp, video_info_t *info)
  198 {
  199         return (*prevvidsw->query_mode)(adp, info);
  200 }
  201 
  202 static vm_offset_t
  203 s3lfb_map_buffer(u_int paddr, size_t size)
  204 {
  205         vm_offset_t vaddr;
  206         u_int off;
  207 
  208         off = paddr - trunc_page(paddr);
  209         vaddr = (vm_offset_t)pmap_mapdev(paddr - off, size + off);
  210 
  211         return (vaddr + off);
  212 }
  213 
  214 static int
  215 s3lfb_set_mode(video_adapter_t *adp, int mode)
  216 {
  217         device_t dev = s3pci_dev;                       /* XXX */
  218         struct s3pci_softc *sc = (struct s3pci_softc *)device_get_softc(dev);
  219 #if 0
  220         unsigned char tmp;
  221 #endif
  222         int error;
  223 
  224         /* First, set the mode as if it was a classic VESA card
  225          */
  226         if ((error = (*prevvidsw->set_mode)(adp, mode)))
  227                 return error;
  228 
  229         /* If not in a linear mode (according to s3lfb_get_info() called
  230          * by vesa_set_mode in the (*vidsw[adp->va_index]->get_info)...
  231          * sequence, return with no error
  232          */
  233 #if 0
  234         if (!(adp->va_info.vi_flags & V_INFO_LINEAR))
  235                 return 0;
  236 #endif
  237 
  238         if ((mode <= M_VESA_BASE) ||
  239                 !(adp->va_info.vi_flags & V_INFO_GRAPHICS) ||
  240                 (adp->va_info.vi_flags & V_INFO_LINEAR))
  241                 return 0;
  242 
  243         /* Ok, now apply the configuration to the card */
  244 
  245         outb_p(0x38, S3_CRTC_ADDR); outb_p(0x48, S3_CRTC_VALUE);
  246         outb_p(0x39, S3_CRTC_ADDR); outb_p(0xa5, S3_CRTC_VALUE);
  247        
  248        /* check that CR47 is read/write */
  249        
  250 #if 0
  251         outb_p(0x47, S3_CRTC_ADDR); outb_p(0xff, S3_CRTC_VALUE);
  252         tmp = inb_p(S3_CRTC_VALUE);
  253         outb_p(0x00, S3_CRTC_VALUE);
  254         if ((tmp != 0xff) || (inb_p(S3_CRTC_VALUE)))
  255         {
  256                 /* lock S3 registers */
  257 
  258                 outb_p(0x39, S3_CRTC_ADDR); outb_p(0x5a, S3_CRTC_VALUE);
  259                 outb_p(0x38, S3_CRTC_ADDR); outb_p(0x00, S3_CRTC_VALUE);
  260 
  261                 return ENXIO;
  262         }
  263 #endif
  264 
  265         /* enable enhanced register access */
  266 
  267         outb_p(0x40, S3_CRTC_ADDR);
  268         outb_p(inb_p(S3_CRTC_VALUE) | 1, S3_CRTC_VALUE);
  269 
  270         /* enable enhanced functions */
  271 
  272         outb_enh(inb_enh(0) | 1, 0x0);
  273 
  274         /* enable enhanced mode memory mapping */
  275 
  276         outb_p(0x31, S3_CRTC_ADDR);
  277         outb_p(inb_p(S3_CRTC_VALUE) | 8, S3_CRTC_VALUE);
  278 
  279         /* enable linear frame buffer and set address window to max */
  280 
  281         outb_p(0x58, S3_CRTC_ADDR);
  282         outb_p(inb_p(S3_CRTC_VALUE) | 0x13, S3_CRTC_VALUE);
  283 
  284         /* disabled enhanced register access */
  285 
  286         outb_p(0x40, S3_CRTC_ADDR);
  287         outb_p(inb_p(S3_CRTC_VALUE) & ~1, S3_CRTC_VALUE);
  288 
  289         /* lock S3 registers */
  290 
  291         outb_p(0x39, S3_CRTC_ADDR); outb_p(0x5a, S3_CRTC_VALUE);
  292         outb_p(0x38, S3_CRTC_ADDR); outb_p(0x00, S3_CRTC_VALUE);
  293 
  294         adp->va_info.vi_flags |= V_INFO_LINEAR;
  295         adp->va_info.vi_buffer = sc->mem_base;
  296         adp->va_buffer = s3lfb_map_buffer(adp->va_info.vi_buffer,
  297                                 adp->va_info.vi_buffer_size);
  298         adp->va_buffer_size = adp->va_info.vi_buffer_size;
  299         adp->va_window = adp->va_buffer;
  300         adp->va_window_size = adp->va_info.vi_buffer_size/adp->va_info.vi_planes;
  301         adp->va_window_gran = adp->va_info.vi_buffer_size/adp->va_info.vi_planes;
  302 
  303         return 0;
  304 }
  305 
  306 static int
  307 s3lfb_save_font(video_adapter_t *adp, int page, int fontsize, int fontwidth,
  308                u_char *data, int ch, int count)
  309 {
  310         return (*prevvidsw->save_font)(adp, page, fontsize, fontwidth, data,
  311                 ch, count);
  312 }
  313 
  314 static int
  315 s3lfb_load_font(video_adapter_t *adp, int page, int fontsize, int fontwidth,
  316                u_char *data, int ch, int count)
  317 {
  318         return (*prevvidsw->load_font)(adp, page, fontsize, fontwidth, data,
  319                 ch, count);
  320 }
  321 
  322 static int
  323 s3lfb_show_font(video_adapter_t *adp, int page)
  324 {
  325         return (*prevvidsw->show_font)(adp, page);
  326 }
  327 
  328 static int
  329 s3lfb_save_palette(video_adapter_t *adp, u_char *palette)
  330 {
  331         return (*prevvidsw->save_palette)(adp, palette);
  332 }
  333 
  334 static int
  335 s3lfb_load_palette(video_adapter_t *adp, u_char *palette)
  336 {
  337         return (*prevvidsw->load_palette)(adp, palette);
  338 }
  339 
  340 static int
  341 s3lfb_set_border(video_adapter_t *adp, int color)
  342 {
  343         return (*prevvidsw->set_border)(adp, color);
  344 }
  345 
  346 static int
  347 s3lfb_save_state(video_adapter_t *adp, void *p, size_t size)
  348 {
  349         return (*prevvidsw->save_state)(adp, p, size);
  350 }
  351 
  352 static int
  353 s3lfb_load_state(video_adapter_t *adp, void *p)
  354 {
  355         return (*prevvidsw->load_state)(adp, p);
  356 }
  357 
  358 static int
  359 s3lfb_set_origin(video_adapter_t *adp, off_t offset)
  360 {
  361         return (*prevvidsw->set_win_org)(adp, offset);
  362 }
  363 
  364 static int
  365 s3lfb_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
  366 {
  367         return (*prevvidsw->read_hw_cursor)(adp, col, row);
  368 }
  369 
  370 static int
  371 s3lfb_set_hw_cursor(video_adapter_t *adp, int col, int row)
  372 {
  373         return (*prevvidsw->set_hw_cursor)(adp, col, row);
  374 }
  375 
  376 static int
  377 s3lfb_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
  378                          int celsize, int blink)
  379 {
  380         return (*prevvidsw->set_hw_cursor_shape)(adp, base, height,
  381                         celsize, blink);
  382 }
  383 
  384 static int
  385 s3lfb_blank_display(video_adapter_t *adp, int mode) 
  386 {
  387         return (*prevvidsw->blank_display)(adp, mode);
  388 }
  389 
  390 static int
  391 s3lfb_mmap(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr,
  392           int prot, vm_memattr_t *memattr)
  393 {
  394         return (*prevvidsw->mmap)(adp, offset, paddr, prot, memattr);
  395 }
  396 
  397 static int
  398 s3lfb_clear(video_adapter_t *adp)
  399 {
  400         return (*prevvidsw->clear)(adp);
  401 }
  402 
  403 static int
  404 s3lfb_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
  405 {
  406         return (*prevvidsw->fill_rect)(adp, val, x, y, cx, cy);
  407 }
  408 
  409 static int
  410 s3lfb_bitblt(video_adapter_t *adp,...)
  411 {
  412         return (*prevvidsw->bitblt)(adp);               /* XXX */
  413 }
  414 
  415 static int
  416 s3lfb_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg)
  417 {
  418         return (*prevvidsw->ioctl)(adp, cmd, arg);
  419 }
  420 
  421 static int
  422 s3lfb_diag(video_adapter_t *adp, int level)
  423 {
  424         return (*prevvidsw->diag)(adp, level);
  425 }
  426 
  427 static int
  428 s3lfb_error(void)
  429 {
  430         return 1;
  431 }
  432 
  433 /***********************************/
  434 /* PCI detection/attachement stuff */
  435 /***********************************/
  436 
  437 static int
  438 s3pci_probe(device_t dev)
  439 {
  440         u_int32_t vendor, class, subclass, device_id;
  441 
  442         device_id = pci_get_devid(dev);
  443         vendor = device_id & 0xffff;
  444         class = pci_get_class(dev);
  445         subclass = pci_get_subclass(dev);
  446 
  447         if ((class != PCIC_DISPLAY) || (subclass != PCIS_DISPLAY_VGA) ||
  448                 (vendor != PCI_S3_VENDOR_ID))
  449                 return ENXIO;
  450 
  451         device_set_desc(dev, "S3 graphic card");
  452 
  453         bus_set_resource(dev, SYS_RES_IOPORT, 0,
  454                                 S3_CONFIG_IO, S3_CONFIG_IO_SIZE);
  455         bus_set_resource(dev, SYS_RES_IOPORT, 1,
  456                                 S3_ENHANCED_IO, S3_ENHANCED_IO_SIZE);
  457 
  458         return BUS_PROBE_DEFAULT;
  459 
  460 };
  461 
  462 static int
  463 s3pci_attach(device_t dev)
  464 {
  465         struct s3pci_softc* sc = (struct s3pci_softc*)device_get_softc(dev);
  466         video_adapter_t *adp;
  467 
  468 #if 0
  469         unsigned char tmp;
  470 #endif
  471         int rid, i;
  472 
  473         if (s3pci_dev) {
  474                 printf("%s: driver already attached!\n", __func__);
  475                 goto error;
  476         }
  477 
  478         /* Allocate resources
  479          */
  480         rid = 0;
  481         if (!(sc->port_res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
  482                                 0ul, ~0ul, 0, RF_ACTIVE | RF_SHAREABLE))) {
  483                 printf("%s: port resource allocation failed!\n", __func__);
  484                 goto error;
  485         }
  486         sc->st = rman_get_bustag(sc->port_res);
  487         sc->sh = rman_get_bushandle(sc->port_res);
  488 
  489         rid = 1;
  490         if (!(sc->enh_res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
  491                                 0ul, ~0ul, 0, RF_ACTIVE | RF_SHAREABLE))) {
  492                 printf("%s: enhanced port resource allocation failed!\n",
  493                         __func__);
  494                 goto error;
  495         }
  496         sc->enh_st = rman_get_bustag(sc->enh_res);
  497         sc->enh_sh = rman_get_bushandle(sc->enh_res);
  498 
  499         rid = PCI_BASE_MEMORY;
  500         if (!(sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
  501                                  RF_ACTIVE))) {
  502 
  503                 printf("%s: mem resource allocation failed!\n", __func__);
  504                 goto error;
  505         }
  506 
  507         /* The memory base address will be our LFB base address
  508          */
  509         /* sc->mem_base = (u_long)rman_get_virtual(sc->mem_res); */
  510         sc->mem_base = bus_get_resource_start(dev, SYS_RES_MEMORY, rid);
  511         sc->mem_size = bus_get_resource_count(dev, SYS_RES_MEMORY, rid);
  512 
  513         /* Attach the driver to the VGA/VESA framework
  514          */
  515         for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) {
  516                 if (adp->va_type == KD_VGA)
  517                         break;
  518         }
  519 
  520         /* If the VESA module hasn't been loaded, or VGA doesn't
  521          * exist, abort
  522          */
  523         if ((adp == NULL) || !(adp->va_flags & V_ADP_VESA)) {
  524                 printf("%s: VGA adapter not found or VESA module not loaded!\n",
  525                         __func__);
  526                 goto error;
  527         }
  528 
  529         /* Replace the VESA video switch by owers
  530          */
  531         prevvidsw = vidsw[adp->va_index];
  532         vidsw[adp->va_index] = &s3lfbvidsw;
  533 
  534         /* Remember who we are on the bus */
  535         s3pci_dev = (void *)dev;                        /* XXX */
  536 
  537         return 0;
  538 
  539 error:
  540         if (sc->mem_res)
  541                 bus_release_resource(dev, SYS_RES_MEMORY, PCI_BASE_MEMORY, sc->mem_res);
  542 
  543         if (sc->enh_res)
  544                 bus_release_resource(dev, SYS_RES_IOPORT, 1, sc->enh_res);
  545 
  546         if (sc->port_res)
  547                 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->port_res);
  548 
  549         return ENXIO;
  550 };
  551 
  552 static device_method_t s3pci_methods[] = {
  553 
  554         DEVMETHOD(device_probe, s3pci_probe),
  555         DEVMETHOD(device_attach, s3pci_attach),
  556         {0,0}
  557 };
  558 
  559 static driver_t s3pci_driver = {
  560         "s3pci",
  561         s3pci_methods,
  562         sizeof(struct s3pci_softc),
  563 };
  564 
  565 static devclass_t s3pci_devclass;
  566 
  567 DRIVER_MODULE(s3pci, pci, s3pci_driver, s3pci_devclass, 0, 0);

Cache object: 9d83af5cdb86427272d5bd68dda407e7


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