MFC r269278 (nwhitehorn):
Make mmap() of the console device when using ofwfb work like other supported framebuffer drivers. This lets ofwfb work with xf86-video-scfb and makes the driver much more generic and less PCI-centric. This changes some user-visible behavior and will require updates to the xorg-server port on PowerPC when using ATI graphics cards. Relnotes: Yes Sponsored by: The FreeBSD Foundation
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@ -52,16 +52,13 @@ struct ofwfb_softc {
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struct fb_info fb;
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phandle_t sc_node;
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ihandle_t sc_handle;
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bus_space_tag_t sc_memt;
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struct ofw_pci_register sc_pciaddrs[8];
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int sc_num_pciaddrs;
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};
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static vd_probe_t ofwfb_probe;
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static vd_init_t ofwfb_init;
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static vd_bitbltchr_t ofwfb_bitbltchr;
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static vd_fb_mmap_t ofwfb_mmap;
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static const struct vt_driver vt_ofwfb_driver = {
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.vd_name = "ofwfb",
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@ -70,7 +67,8 @@ static const struct vt_driver vt_ofwfb_driver = {
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.vd_blank = vt_fb_blank,
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.vd_bitbltchr = ofwfb_bitbltchr,
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.vd_maskbitbltchr = ofwfb_bitbltchr,
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.vd_fb_mmap = ofwfb_mmap,
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.vd_fb_ioctl = vt_fb_ioctl,
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.vd_fb_mmap = vt_fb_mmap,
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.vd_priority = VD_PRIORITY_GENERIC+1,
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};
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@ -198,17 +196,10 @@ static void
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ofwfb_initialize(struct vt_device *vd)
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{
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struct ofwfb_softc *sc = vd->vd_softc;
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char name[64];
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ihandle_t ih;
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int i;
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cell_t retval;
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uint32_t oldpix;
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/* Open display device, thereby initializing it */
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memset(name, 0, sizeof(name));
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OF_package_to_path(sc->sc_node, name, sizeof(name));
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ih = OF_open(name);
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/*
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* Set up the color map
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*/
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@ -219,7 +210,7 @@ ofwfb_initialize(struct vt_device *vd)
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16, 255, 8, 255, 0);
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for (i = 0; i < 16; i++) {
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OF_call_method("color!", ih, 4, 1,
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OF_call_method("color!", sc->sc_handle, 4, 1,
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(cell_t)((sc->fb.fb_cmap[i] >> 16) & 0xff),
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(cell_t)((sc->fb.fb_cmap[i] >> 8) & 0xff),
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(cell_t)((sc->fb.fb_cmap[i] >> 0) & 0xff),
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@ -260,7 +251,6 @@ ofwfb_init(struct vt_device *vd)
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struct ofwfb_softc *sc;
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char type[64];
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phandle_t chosen;
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ihandle_t stdout;
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phandle_t node;
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uint32_t depth, height, width, stride;
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uint32_t fb_phys;
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@ -275,14 +265,15 @@ ofwfb_init(struct vt_device *vd)
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vd->vd_softc = sc = &ofwfb_conssoftc;
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chosen = OF_finddevice("/chosen");
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OF_getprop(chosen, "stdout", &stdout, sizeof(stdout));
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node = OF_instance_to_package(stdout);
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OF_getprop(chosen, "stdout", &sc->sc_handle, sizeof(ihandle_t));
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node = OF_instance_to_package(sc->sc_handle);
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if (node == -1) {
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/*
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* The "/chosen/stdout" does not exist try
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* using "screen" directly.
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*/
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node = OF_finddevice("screen");
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sc->sc_handle = OF_open("screen");
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}
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OF_getprop(node, "device_type", type, sizeof(type));
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if (strcmp(type, "display") != 0)
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@ -291,6 +282,13 @@ ofwfb_init(struct vt_device *vd)
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/* Keep track of the OF node */
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sc->sc_node = node;
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/*
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* Try to use a 32-bit framebuffer if possible. This may be
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* unimplemented and fail. That's fine -- it just means we are
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* stuck with the defaults.
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*/
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OF_call_method("set-depth", sc->sc_handle, 1, 1, (cell_t)32, &i);
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/* Make sure we have needed properties */
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if (OF_getproplen(node, "height") != sizeof(height) ||
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OF_getproplen(node, "width") != sizeof(width) ||
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@ -302,7 +300,7 @@ ofwfb_init(struct vt_device *vd)
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OF_getprop(node, "depth", &depth, sizeof(depth));
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if (depth != 8 && depth != 32)
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return (CN_DEAD);
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sc->fb.fb_bpp = depth;
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sc->fb.fb_bpp = sc->fb.fb_depth = depth;
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OF_getprop(node, "height", &height, sizeof(height));
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OF_getprop(node, "width", &width, sizeof(width));
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@ -313,21 +311,6 @@ ofwfb_init(struct vt_device *vd)
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sc->fb.fb_stride = stride;
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sc->fb.fb_size = sc->fb.fb_height * sc->fb.fb_stride;
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/*
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* Get the PCI addresses of the adapter, if present. The node may be the
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* child of the PCI device: in that case, try the parent for
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* the assigned-addresses property.
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*/
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len = OF_getprop(node, "assigned-addresses", sc->sc_pciaddrs,
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sizeof(sc->sc_pciaddrs));
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if (len == -1) {
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len = OF_getprop(OF_parent(node), "assigned-addresses",
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sc->sc_pciaddrs, sizeof(sc->sc_pciaddrs));
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}
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if (len == -1)
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len = 0;
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sc->sc_num_pciaddrs = len / sizeof(struct ofw_pci_register);
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/*
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* Grab the physical address of the framebuffer, and then map it
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* into our memory space. If the MMU is not yet up, it will be
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@ -339,13 +322,18 @@ ofwfb_init(struct vt_device *vd)
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#if defined(__powerpc__)
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sc->sc_memt = &bs_be_tag;
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bus_space_map(sc->sc_memt, fb_phys, height * sc->fb.fb_stride,
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bus_space_map(sc->sc_memt, fb_phys, sc->fb.fb_size,
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BUS_SPACE_MAP_PREFETCHABLE, &sc->fb.fb_vbase);
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#elif defined(__sparc64__)
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OF_decode_addr(node, 0, &space, &phys);
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sc->sc_memt = &ofwfb_memt[0];
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sc->fb.fb_vbase =
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sparc64_fake_bustag(space, fb_phys, sc->sc_memt);
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#elif defined(__arm__)
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sc->sc_memt = fdtbus_bs_tag;
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bus_space_map(sc->sc_memt, sc->fb.fb_pbase, sc->fb.fb_size,
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BUS_SPACE_MAP_PREFETCHABLE,
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(bus_space_handle_t *)&sc->fb.fb_vbase);
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#else
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#error Unsupported platform!
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#endif
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@ -357,14 +345,31 @@ ofwfb_init(struct vt_device *vd)
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* Linux does the same thing.
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*/
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fb_phys = sc->sc_num_pciaddrs;
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for (i = 0; i < sc->sc_num_pciaddrs; i++) {
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struct ofw_pci_register pciaddrs[8];
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int num_pciaddrs = 0;
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/*
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* Get the PCI addresses of the adapter, if present. The node
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* may be the child of the PCI device: in that case, try the
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* parent for the assigned-addresses property.
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*/
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len = OF_getprop(node, "assigned-addresses", pciaddrs,
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sizeof(pciaddrs));
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if (len == -1) {
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len = OF_getprop(OF_parent(node), "assigned-addresses",
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pciaddrs, sizeof(pciaddrs));
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}
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if (len == -1)
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len = 0;
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num_pciaddrs = len / sizeof(struct ofw_pci_register);
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fb_phys = num_pciaddrs;
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for (i = 0; i < num_pciaddrs; i++) {
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/* If it is too small, not the framebuffer */
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if (sc->sc_pciaddrs[i].size_lo <
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sc->fb.fb_stride * height)
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if (pciaddrs[i].size_lo < sc->fb.fb_stride * height)
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continue;
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/* If it is not memory, it isn't either */
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if (!(sc->sc_pciaddrs[i].phys_hi &
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if (!(pciaddrs[i].phys_hi &
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OFW_PCI_PHYS_HI_SPACE_MEM32))
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continue;
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@ -372,12 +377,11 @@ ofwfb_init(struct vt_device *vd)
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fb_phys = i;
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/* If it is prefetchable, it certainly is */
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if (sc->sc_pciaddrs[i].phys_hi &
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OFW_PCI_PHYS_HI_PREFETCHABLE)
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if (pciaddrs[i].phys_hi & OFW_PCI_PHYS_HI_PREFETCHABLE)
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break;
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}
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if (fb_phys == sc->sc_num_pciaddrs) /* No candidates found */
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if (fb_phys == num_pciaddrs) /* No candidates found */
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return (CN_DEAD);
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#if defined(__powerpc__)
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@ -385,7 +389,10 @@ ofwfb_init(struct vt_device *vd)
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#elif defined(__sparc64__)
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OF_decode_addr(node, fb_phys, &space, &phys);
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sc->sc_memt = &ofwfb_memt[0];
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sc->sc_addr = sparc64_fake_bustag(space, phys, sc->sc_memt);
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sc->fb.fb_vbase = sparc64_fake_bustag(space, phys, sc->sc_memt);
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#else
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/* No ability to interpret assigned-addresses otherwise */
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return (CN_DEAD);
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#endif
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}
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@ -398,39 +405,3 @@ ofwfb_init(struct vt_device *vd)
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return (CN_INTERNAL);
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}
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static int
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ofwfb_mmap(struct vt_device *vd, vm_ooffset_t offset, vm_paddr_t *paddr,
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int prot, vm_memattr_t *memattr)
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{
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struct ofwfb_softc *sc = vd->vd_softc;
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int i;
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/*
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* Make sure the requested address lies within the PCI device's
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* assigned addrs
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*/
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for (i = 0; i < sc->sc_num_pciaddrs; i++)
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if (offset >= sc->sc_pciaddrs[i].phys_lo &&
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offset < (sc->sc_pciaddrs[i].phys_lo + sc->sc_pciaddrs[i].size_lo))
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{
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#ifdef VM_MEMATTR_WRITE_COMBINING
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/*
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* If this is a prefetchable BAR, we can (and should)
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* enable write-combining.
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*/
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if (sc->sc_pciaddrs[i].phys_hi &
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OFW_PCI_PHYS_HI_PREFETCHABLE)
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*memattr = VM_MEMATTR_WRITE_COMBINING;
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#endif
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*paddr = offset;
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return (0);
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}
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/*
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* Hack for Radeon...
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*/
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*paddr = offset;
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return (0);
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}
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