FreeBSD/Linux Kernel Cross Reference
sys/dev/fb/s3_pci.c

     /*-
      * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * Copyright (c) 2000 Alcove - Nicolas Souchu <nsouch@freebsd.org>
      * All rights reserved.
      *
      * Code based on Peter Horton <pdh@colonel-panic.com> patch.
      *
      * 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.
     * 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.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 AUTHOR OR CONTRIBUTORS 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("$FreeBSD$");
    
    /* Enable LFB on S3 cards that has only VESA 1.2 BIOS */
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/kernel.h>
    #include <machine/bus.h>
    
    #include <vm/vm.h>
    #include <vm/vm_extern.h>
    #include <vm/vm_kern.h>
    #include <vm/pmap.h>
    
    #include <sys/uio.h>
    #include <sys/module.h>
    #include <sys/bus.h>
    #include <sys/rman.h>
    #include <machine/resource.h>
    
    #include <sys/malloc.h>
    #include <sys/fbio.h>
    
    #include <dev/pci/pcireg.h>
    #include <dev/pci/pcivar.h>
    
    #include <machine/md_var.h>
    #include <machine/pc/bios.h>
    #include <dev/fb/vesa.h>
    
    #include <dev/fb/fbreg.h>
    #include <dev/fb/vgareg.h>
    
    #define S3PCI_DEBUG 1
    
    #define PCI_S3_VENDOR_ID        0x5333
    
    #define S3_CONFIG_IO            0x3c0   /* VGA standard config io ports */
    #define S3_CONFIG_IO_SIZE       0x20
    
    #define S3_ENHANCED_IO          0x4ae8  /* Extended config register */
    #define S3_ENHANCED_IO_SIZE     1
    
    #define S3_CRTC_ADDR            0x14
    #define S3_CRTC_VALUE           0x15
    
    #define PCI_BASE_MEMORY         0x10
    
    #define outb_p(value, offset) bus_space_write_1(sc->st, sc->sh, offset, value)
    #define inb_p(offset) (bus_space_read_1(sc->st, sc->sh, offset))
    #define outb_enh(value, offset) bus_space_write_1(sc->enh_st, sc->enh_sh, \
                                                                    offset, value)
    #define inb_enh(offset) (bus_space_read_1(sc->enh_st, sc->enh_sh, offset))
    
    struct s3pci_softc {
            bus_space_tag_t st;
            bus_space_handle_t sh;
            bus_space_tag_t enh_st;
            bus_space_handle_t enh_sh;
            struct resource *port_res;
            struct resource *enh_res;
            struct resource *mem_res;
            u_long mem_base;
            u_long mem_size;
    };
    
    static int                      s3lfb_error(void);
    static vi_probe_t               s3lfb_probe;
   static vi_init_t                s3lfb_init;
   static vi_get_info_t            s3lfb_get_info;
   static vi_query_mode_t          s3lfb_query_mode;
   static vi_set_mode_t            s3lfb_set_mode;
   static vi_save_font_t           s3lfb_save_font;
   static vi_load_font_t           s3lfb_load_font;
   static vi_show_font_t           s3lfb_show_font;
   static vi_save_palette_t        s3lfb_save_palette;
   static vi_load_palette_t        s3lfb_load_palette;
   static vi_set_border_t          s3lfb_set_border;
   static vi_save_state_t          s3lfb_save_state;
   static vi_load_state_t          s3lfb_load_state;
   static vi_set_win_org_t         s3lfb_set_origin;
   static vi_read_hw_cursor_t      s3lfb_read_hw_cursor;
   static vi_set_hw_cursor_t       s3lfb_set_hw_cursor;
   static vi_set_hw_cursor_shape_t s3lfb_set_hw_cursor_shape;
   static vi_blank_display_t       s3lfb_blank_display;
   static vi_mmap_t                s3lfb_mmap;
   static vi_ioctl_t               s3lfb_ioctl;
   static vi_clear_t               s3lfb_clear;
   static vi_fill_rect_t           s3lfb_fill_rect;
   static vi_bitblt_t              s3lfb_bitblt;
   static vi_diag_t                s3lfb_diag;
   
   static video_switch_t s3lfbvidsw = {
           s3lfb_probe,
           s3lfb_init,
           s3lfb_get_info,
           s3lfb_query_mode,
           s3lfb_set_mode,
           s3lfb_save_font,
           s3lfb_load_font,
           s3lfb_show_font,
           s3lfb_save_palette,
           s3lfb_load_palette,
           s3lfb_set_border,
           s3lfb_save_state,
           s3lfb_load_state,
           s3lfb_set_origin,
           s3lfb_read_hw_cursor,
           s3lfb_set_hw_cursor,
           s3lfb_set_hw_cursor_shape,
           s3lfb_blank_display,
           s3lfb_mmap,
           s3lfb_ioctl,
           s3lfb_clear,
           s3lfb_fill_rect,
           s3lfb_bitblt,
           s3lfb_error,
           s3lfb_error,
           s3lfb_diag,
   };
   
   static video_switch_t *prevvidsw;
   static device_t s3pci_dev = NULL;
   
   static int
   s3lfb_probe(int unit, video_adapter_t **adpp, void *arg, int flags)
   {
           return (*prevvidsw->probe)(unit, adpp, arg, flags);
   }
   
   static int
   s3lfb_init(int unit, video_adapter_t *adp, int flags)
   {
           return (*prevvidsw->init)(unit, adp, flags);
   }
   
   static int
   s3lfb_get_info(video_adapter_t *adp, int mode, video_info_t *info)
   {
   #if 0
           device_t dev = s3pci_dev;                       /* XXX */
           struct s3pci_softc *sc = (struct s3pci_softc *)device_get_softc(dev);
   #endif
           int error;
   
           if ((error = (*prevvidsw->get_info)(adp, mode, info)))
                   return error;
   
   #if 0
           /* Don't use linear addressing with text modes
            */
           if ((mode > M_VESA_BASE) &&
                   (info->vi_flags & V_INFO_GRAPHICS) &&
                   !(info->vi_flags & V_INFO_LINEAR)) {
   
                   info->vi_flags |= V_INFO_LINEAR;
                   info->vi_buffer = sc->mem_base;
   
           } else {
                   info->vi_buffer = 0;
           }
   #endif
   
           return 0;
   }
   
   static int
   s3lfb_query_mode(video_adapter_t *adp, video_info_t *info)
   {
           return (*prevvidsw->query_mode)(adp, info);
   }
   
   static vm_offset_t
   s3lfb_map_buffer(u_int paddr, size_t size)
   {
           vm_offset_t vaddr;
           u_int off;
   
           off = paddr - trunc_page(paddr);
           vaddr = (vm_offset_t)pmap_mapdev(paddr - off, size + off);
   
           return (vaddr + off);
   }
   
   static int
   s3lfb_set_mode(video_adapter_t *adp, int mode)
   {
           device_t dev = s3pci_dev;                       /* XXX */
           struct s3pci_softc *sc = (struct s3pci_softc *)device_get_softc(dev);
   #if 0
           unsigned char tmp;
   #endif
           int error;
   
           /* First, set the mode as if it was a classic VESA card
            */
           if ((error = (*prevvidsw->set_mode)(adp, mode)))
                   return error;
   
           /* If not in a linear mode (according to s3lfb_get_info() called
            * by vesa_set_mode in the (*vidsw[adp->va_index]->get_info)...
            * sequence, return with no error
            */
   #if 0
           if (!(adp->va_info.vi_flags & V_INFO_LINEAR))
                   return 0;
   #endif
   
           if ((mode <= M_VESA_BASE) ||
                   !(adp->va_info.vi_flags & V_INFO_GRAPHICS) ||
                   (adp->va_info.vi_flags & V_INFO_LINEAR))
                   return 0;
   
           /* Ok, now apply the configuration to the card */
   
           outb_p(0x38, S3_CRTC_ADDR); outb_p(0x48, S3_CRTC_VALUE);
           outb_p(0x39, S3_CRTC_ADDR); outb_p(0xa5, S3_CRTC_VALUE);
          
          /* check that CR47 is read/write */
          
   #if 0
           outb_p(0x47, S3_CRTC_ADDR); outb_p(0xff, S3_CRTC_VALUE);
           tmp = inb_p(S3_CRTC_VALUE);
           outb_p(0x00, S3_CRTC_VALUE);
           if ((tmp != 0xff) || (inb_p(S3_CRTC_VALUE)))
           {
                   /* lock S3 registers */
   
                   outb_p(0x39, S3_CRTC_ADDR); outb_p(0x5a, S3_CRTC_VALUE);
                   outb_p(0x38, S3_CRTC_ADDR); outb_p(0x00, S3_CRTC_VALUE);
   
                   return ENXIO;
           }
   #endif
   
           /* enable enhanced register access */
   
           outb_p(0x40, S3_CRTC_ADDR);
           outb_p(inb_p(S3_CRTC_VALUE) | 1, S3_CRTC_VALUE);
   
           /* enable enhanced functions */
   
           outb_enh(inb_enh(0) | 1, 0x0);
   
           /* enable enhanced mode memory mapping */
   
           outb_p(0x31, S3_CRTC_ADDR);
           outb_p(inb_p(S3_CRTC_VALUE) | 8, S3_CRTC_VALUE);
   
           /* enable linear frame buffer and set address window to max */
   
           outb_p(0x58, S3_CRTC_ADDR);
           outb_p(inb_p(S3_CRTC_VALUE) | 0x13, S3_CRTC_VALUE);
   
           /* disabled enhanced register access */
   
           outb_p(0x40, S3_CRTC_ADDR);
           outb_p(inb_p(S3_CRTC_VALUE) & ~1, S3_CRTC_VALUE);
   
           /* lock S3 registers */
   
           outb_p(0x39, S3_CRTC_ADDR); outb_p(0x5a, S3_CRTC_VALUE);
           outb_p(0x38, S3_CRTC_ADDR); outb_p(0x00, S3_CRTC_VALUE);
   
           adp->va_info.vi_flags |= V_INFO_LINEAR;
           adp->va_info.vi_buffer = sc->mem_base;
           adp->va_buffer = s3lfb_map_buffer(adp->va_info.vi_buffer,
                                   adp->va_info.vi_buffer_size);
           adp->va_buffer_size = adp->va_info.vi_buffer_size;
           adp->va_window = adp->va_buffer;
           adp->va_window_size = adp->va_info.vi_buffer_size/adp->va_info.vi_planes;
           adp->va_window_gran = adp->va_info.vi_buffer_size/adp->va_info.vi_planes;
   
           return 0;
   }
   
   static int
   s3lfb_save_font(video_adapter_t *adp, int page, int fontsize, int fontwidth,
                  u_char *data, int ch, int count)
   {
           return (*prevvidsw->save_font)(adp, page, fontsize, fontwidth, data,
                   ch, count);
   }
   
   static int
   s3lfb_load_font(video_adapter_t *adp, int page, int fontsize, int fontwidth,
                  u_char *data, int ch, int count)
   {
           return (*prevvidsw->load_font)(adp, page, fontsize, fontwidth, data,
                   ch, count);
   }
   
   static int
   s3lfb_show_font(video_adapter_t *adp, int page)
   {
           return (*prevvidsw->show_font)(adp, page);
   }
   
   static int
   s3lfb_save_palette(video_adapter_t *adp, u_char *palette)
   {
           return (*prevvidsw->save_palette)(adp, palette);
   }
   
   static int
   s3lfb_load_palette(video_adapter_t *adp, u_char *palette)
   {
           return (*prevvidsw->load_palette)(adp, palette);
   }
   
   static int
   s3lfb_set_border(video_adapter_t *adp, int color)
   {
           return (*prevvidsw->set_border)(adp, color);
   }
   
   static int
   s3lfb_save_state(video_adapter_t *adp, void *p, size_t size)
   {
           return (*prevvidsw->save_state)(adp, p, size);
   }
   
   static int
   s3lfb_load_state(video_adapter_t *adp, void *p)
   {
           return (*prevvidsw->load_state)(adp, p);
   }
   
   static int
   s3lfb_set_origin(video_adapter_t *adp, off_t offset)
   {
           return (*prevvidsw->set_win_org)(adp, offset);
   }
   
   static int
   s3lfb_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
   {
           return (*prevvidsw->read_hw_cursor)(adp, col, row);
   }
   
   static int
   s3lfb_set_hw_cursor(video_adapter_t *adp, int col, int row)
   {
           return (*prevvidsw->set_hw_cursor)(adp, col, row);
   }
   
   static int
   s3lfb_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
                            int celsize, int blink)
   {
           return (*prevvidsw->set_hw_cursor_shape)(adp, base, height,
                           celsize, blink);
   }
   
   static int
   s3lfb_blank_display(video_adapter_t *adp, int mode) 
   {
           return (*prevvidsw->blank_display)(adp, mode);
   }
   
   static int
   s3lfb_mmap(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr,
             int prot, vm_memattr_t *memattr)
   {
           return (*prevvidsw->mmap)(adp, offset, paddr, prot, memattr);
   }
   
   static int
   s3lfb_clear(video_adapter_t *adp)
   {
           return (*prevvidsw->clear)(adp);
   }
   
   static int
   s3lfb_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
   {
           return (*prevvidsw->fill_rect)(adp, val, x, y, cx, cy);
   }
   
   static int
   s3lfb_bitblt(video_adapter_t *adp,...)
   {
           return (*prevvidsw->bitblt)(adp);               /* XXX */
   }
   
   static int
   s3lfb_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg)
   {
           return (*prevvidsw->ioctl)(adp, cmd, arg);
   }
   
   static int
   s3lfb_diag(video_adapter_t *adp, int level)
   {
           return (*prevvidsw->diag)(adp, level);
   }
   
   static int
   s3lfb_error(void)
   {
           return 1;
   }
   
   /***********************************/
   /* PCI detection/attachement stuff */
   /***********************************/
   
   static int
   s3pci_probe(device_t dev)
   {
           u_int32_t vendor, class, subclass, device_id;
   
           device_id = pci_get_devid(dev);
           vendor = device_id & 0xffff;
           class = pci_get_class(dev);
           subclass = pci_get_subclass(dev);
   
           if ((class != PCIC_DISPLAY) || (subclass != PCIS_DISPLAY_VGA) ||
                   (vendor != PCI_S3_VENDOR_ID))
                   return ENXIO;
   
           device_set_desc(dev, "S3 graphic card");
   
           bus_set_resource(dev, SYS_RES_IOPORT, 0,
                                   S3_CONFIG_IO, S3_CONFIG_IO_SIZE);
           bus_set_resource(dev, SYS_RES_IOPORT, 1,
                                   S3_ENHANCED_IO, S3_ENHANCED_IO_SIZE);
   
           return BUS_PROBE_DEFAULT;
   
   };
   
   static int
   s3pci_attach(device_t dev)
   {
           struct s3pci_softc* sc = (struct s3pci_softc*)device_get_softc(dev);
           video_adapter_t *adp;
   
   #if 0
           unsigned char tmp;
   #endif
           int rid, i;
   
           if (s3pci_dev) {
                   printf("%s: driver already attached!\n", __func__);
                   goto error;
           }
   
           /* Allocate resources
            */
           rid = 0;
           if (!(sc->port_res = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid,
                                   RF_ACTIVE | RF_SHAREABLE))) {
                   printf("%s: port resource allocation failed!\n", __func__);
                   goto error;
           }
           sc->st = rman_get_bustag(sc->port_res);
           sc->sh = rman_get_bushandle(sc->port_res);
   
           rid = 1;
           if (!(sc->enh_res = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid,
                                   RF_ACTIVE | RF_SHAREABLE))) {
                   printf("%s: enhanced port resource allocation failed!\n",
                           __func__);
                   goto error;
           }
           sc->enh_st = rman_get_bustag(sc->enh_res);
           sc->enh_sh = rman_get_bushandle(sc->enh_res);
   
           rid = PCI_BASE_MEMORY;
           if (!(sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
                                    RF_ACTIVE))) {
   
                   printf("%s: mem resource allocation failed!\n", __func__);
                   goto error;
           }
   
           /* The memory base address will be our LFB base address
            */
           /* sc->mem_base = (u_long)rman_get_virtual(sc->mem_res); */
           sc->mem_base = bus_get_resource_start(dev, SYS_RES_MEMORY, rid);
           sc->mem_size = bus_get_resource_count(dev, SYS_RES_MEMORY, rid);
   
           /* Attach the driver to the VGA/VESA framework
            */
           for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) {
                   if (adp->va_type == KD_VGA)
                           break;
           }
   
           /* If the VESA module hasn't been loaded, or VGA doesn't
            * exist, abort
            */
           if ((adp == NULL) || !(adp->va_flags & V_ADP_VESA)) {
                   printf("%s: VGA adapter not found or VESA module not loaded!\n",
                           __func__);
                   goto error;
           }
   
           /* Replace the VESA video switch by owers
            */
           prevvidsw = vidsw[adp->va_index];
           vidsw[adp->va_index] = &s3lfbvidsw;
   
           /* Remember who we are on the bus */
           s3pci_dev = (void *)dev;                        /* XXX */
   
           return 0;
   
   error:
           if (sc->mem_res)
                   bus_release_resource(dev, SYS_RES_MEMORY, PCI_BASE_MEMORY, sc->mem_res);
   
           if (sc->enh_res)
                   bus_release_resource(dev, SYS_RES_IOPORT, 1, sc->enh_res);
   
           if (sc->port_res)
                   bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->port_res);
   
           return ENXIO;
   };
   
   static device_method_t s3pci_methods[] = {
   
           DEVMETHOD(device_probe, s3pci_probe),
           DEVMETHOD(device_attach, s3pci_attach),
           {0,0}
   };
   
   static driver_t s3pci_driver = {
           "s3pci",
           s3pci_methods,
           sizeof(struct s3pci_softc),
   };
   
   static devclass_t s3pci_devclass;
   
   DRIVER_MODULE(s3pci, pci, s3pci_driver, s3pci_devclass, 0, 0);

Cache object: ff8b0b9401267482b1e992ded38d366c