| 1 | /* $NetBSD: radeondrmkmsfb.c,v 1.6 2015/11/05 20:52:46 mrg Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2014 The NetBSD Foundation, Inc. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * This code is derived from software contributed to The NetBSD Foundation |
| 8 | * by Taylor R. Campbell. |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or without |
| 11 | * modification, are permitted provided that the following conditions |
| 12 | * are met: |
| 13 | * 1. Redistributions of source code must retain the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer. |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer in the |
| 17 | * documentation and/or other materials provided with the distribution. |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 29 | * POSSIBILITY OF SUCH DAMAGE. |
| 30 | */ |
| 31 | |
| 32 | |
| 33 | #include <sys/cdefs.h> |
| 34 | __KERNEL_RCSID(0, "$NetBSD: radeondrmkmsfb.c,v 1.6 2015/11/05 20:52:46 mrg Exp $" ); |
| 35 | |
| 36 | #ifdef _KERNEL_OPT |
| 37 | #include "vga.h" |
| 38 | #endif |
| 39 | |
| 40 | #include <sys/types.h> |
| 41 | #include <sys/device.h> |
| 42 | |
| 43 | #include <dev/pci/pciio.h> |
| 44 | #include <dev/pci/pcireg.h> |
| 45 | #include <dev/pci/pcivar.h> |
| 46 | |
| 47 | #include <dev/pci/wsdisplay_pci.h> |
| 48 | #include <dev/wsfb/genfbvar.h> |
| 49 | |
| 50 | #if NVGA > 0 |
| 51 | /* |
| 52 | * XXX All we really need is vga_is_console from vgavar.h, but the |
| 53 | * header files are missing their own dependencies, so we need to |
| 54 | * explicitly drag in the other crap. |
| 55 | */ |
| 56 | #include <dev/ic/mc6845reg.h> |
| 57 | #include <dev/ic/pcdisplayvar.h> |
| 58 | #include <dev/ic/vgareg.h> |
| 59 | #include <dev/ic/vgavar.h> |
| 60 | #endif |
| 61 | |
| 62 | #include <drm/drmP.h> |
| 63 | #include <drm/drm_fb_helper.h> |
| 64 | |
| 65 | #include <radeon.h> |
| 66 | #include "radeon_drv.h" |
| 67 | #include "radeon_task.h" |
| 68 | #include "radeondrmkmsfb.h" |
| 69 | |
| 70 | struct radeonfb_softc { |
| 71 | /* XXX genfb requires the genfb_softc to be first. */ |
| 72 | struct genfb_softc sc_genfb; |
| 73 | device_t sc_dev; |
| 74 | struct radeonfb_attach_args sc_rfa; |
| 75 | struct radeon_task sc_setconfig_task; |
| 76 | bool sc_scheduled:1; |
| 77 | bool sc_attached:1; |
| 78 | }; |
| 79 | |
| 80 | static int radeonfb_match(device_t, cfdata_t, void *); |
| 81 | static void radeonfb_attach(device_t, device_t, void *); |
| 82 | static int radeonfb_detach(device_t, int); |
| 83 | |
| 84 | static void radeonfb_setconfig_task(struct radeon_task *); |
| 85 | |
| 86 | static int radeonfb_genfb_ioctl(void *, void *, unsigned long, void *, |
| 87 | int, struct lwp *); |
| 88 | static paddr_t radeonfb_genfb_mmap(void *, void *, off_t, int); |
| 89 | static int radeonfb_genfb_enable_polling(void *); |
| 90 | static int radeonfb_genfb_disable_polling(void *); |
| 91 | static bool radeonfb_genfb_shutdown(device_t, int); |
| 92 | static bool radeonfb_genfb_setmode(struct genfb_softc *, int); |
| 93 | |
| 94 | static const struct genfb_mode_callback radeonfb_genfb_mode_callback = { |
| 95 | .gmc_setmode = radeonfb_genfb_setmode, |
| 96 | }; |
| 97 | |
| 98 | CFATTACH_DECL_NEW(radeondrmkmsfb, sizeof(struct radeonfb_softc), |
| 99 | radeonfb_match, radeonfb_attach, radeonfb_detach, NULL); |
| 100 | |
| 101 | static int |
| 102 | radeonfb_match(device_t parent, cfdata_t match, void *aux) |
| 103 | { |
| 104 | |
| 105 | return 1; |
| 106 | } |
| 107 | |
| 108 | static void |
| 109 | radeonfb_attach(device_t parent, device_t self, void *aux) |
| 110 | { |
| 111 | struct radeonfb_softc *const sc = device_private(self); |
| 112 | const struct radeonfb_attach_args *const rfa = aux; |
| 113 | int error; |
| 114 | |
| 115 | sc->sc_dev = self; |
| 116 | sc->sc_rfa = *rfa; |
| 117 | sc->sc_scheduled = false; |
| 118 | sc->sc_attached = false; |
| 119 | |
| 120 | aprint_naive("\n" ); |
| 121 | aprint_normal("\n" ); |
| 122 | |
| 123 | radeon_task_init(&sc->sc_setconfig_task, &radeonfb_setconfig_task); |
| 124 | error = radeon_task_schedule(parent, &sc->sc_setconfig_task); |
| 125 | if (error) { |
| 126 | aprint_error_dev(self, "failed to schedule mode set: %d\n" , |
| 127 | error); |
| 128 | goto fail0; |
| 129 | } |
| 130 | sc->sc_scheduled = true; |
| 131 | |
| 132 | /* Success! */ |
| 133 | return; |
| 134 | |
| 135 | fail0: return; |
| 136 | } |
| 137 | |
| 138 | static int |
| 139 | radeonfb_detach(device_t self, int flags) |
| 140 | { |
| 141 | struct radeonfb_softc *const sc = device_private(self); |
| 142 | |
| 143 | if (sc->sc_scheduled) |
| 144 | return EBUSY; |
| 145 | |
| 146 | if (sc->sc_attached) { |
| 147 | /* XXX genfb detach? Help? */ |
| 148 | sc->sc_attached = false; |
| 149 | } |
| 150 | |
| 151 | return 0; |
| 152 | } |
| 153 | |
| 154 | static void |
| 155 | radeonfb_setconfig_task(struct radeon_task *task) |
| 156 | { |
| 157 | struct radeonfb_softc *const sc = container_of(task, |
| 158 | struct radeonfb_softc, sc_setconfig_task); |
| 159 | const prop_dictionary_t dict = device_properties(sc->sc_dev); |
| 160 | const struct radeonfb_attach_args *const rfa = &sc->sc_rfa; |
| 161 | const struct drm_fb_helper_surface_size *const sizes = |
| 162 | &rfa->rfa_fb_sizes; |
| 163 | enum { CONS_VGA, CONS_GENFB, CONS_NONE } what_was_cons; |
| 164 | static const struct genfb_ops zero_genfb_ops; |
| 165 | struct genfb_ops genfb_ops = zero_genfb_ops; |
| 166 | int error; |
| 167 | |
| 168 | KASSERT(sc->sc_scheduled); |
| 169 | |
| 170 | /* XXX Ugh... Pass these parameters some other way! */ |
| 171 | prop_dictionary_set_uint32(dict, "width" , sizes->surface_width); |
| 172 | prop_dictionary_set_uint32(dict, "height" , sizes->surface_height); |
| 173 | prop_dictionary_set_uint8(dict, "depth" , sizes->surface_bpp); |
| 174 | prop_dictionary_set_uint16(dict, "linebytes" , rfa->rfa_fb_linebytes); |
| 175 | prop_dictionary_set_uint32(dict, "address" , 0); /* XXX >32-bit */ |
| 176 | CTASSERT(sizeof(uintptr_t) <= sizeof(uint64_t)); |
| 177 | prop_dictionary_set_uint64(dict, "virtual_address" , |
| 178 | (uint64_t)(uintptr_t)rfa->rfa_fb_ptr); |
| 179 | |
| 180 | prop_dictionary_set_uint64(dict, "mode_callback" , |
| 181 | (uint64_t)(uintptr_t)&radeonfb_genfb_mode_callback); |
| 182 | |
| 183 | /* XXX Whattakludge! */ |
| 184 | #if NVGA > 0 |
| 185 | if (vga_is_console(rfa->rfa_fb_helper->dev->pdev->pd_pa.pa_iot, -1)) { |
| 186 | what_was_cons = CONS_VGA; |
| 187 | prop_dictionary_set_bool(dict, "is_console" , true); |
| 188 | vga_cndetach(); |
| 189 | } else |
| 190 | #endif |
| 191 | if (genfb_is_console() && genfb_is_enabled()) { |
| 192 | what_was_cons = CONS_GENFB; |
| 193 | prop_dictionary_set_bool(dict, "is_console" , true); |
| 194 | } else { |
| 195 | what_was_cons = CONS_NONE; |
| 196 | prop_dictionary_set_bool(dict, "is_console" , false); |
| 197 | } |
| 198 | |
| 199 | sc->sc_genfb.sc_dev = sc->sc_dev; |
| 200 | genfb_init(&sc->sc_genfb); |
| 201 | genfb_ops.genfb_ioctl = radeonfb_genfb_ioctl; |
| 202 | genfb_ops.genfb_mmap = radeonfb_genfb_mmap; |
| 203 | genfb_ops.genfb_enable_polling = radeonfb_genfb_enable_polling; |
| 204 | genfb_ops.genfb_disable_polling = radeonfb_genfb_disable_polling; |
| 205 | |
| 206 | error = genfb_attach(&sc->sc_genfb, &genfb_ops); |
| 207 | if (error) { |
| 208 | aprint_error_dev(sc->sc_dev, "failed to attach genfb: %d\n" , |
| 209 | error); |
| 210 | goto fail0; |
| 211 | } |
| 212 | sc->sc_attached = true; |
| 213 | |
| 214 | pmf_device_register1(sc->sc_dev, NULL, NULL, |
| 215 | radeonfb_genfb_shutdown); |
| 216 | |
| 217 | /* Success! */ |
| 218 | sc->sc_scheduled = false; |
| 219 | return; |
| 220 | |
| 221 | fail0: /* XXX Restore console... */ |
| 222 | switch (what_was_cons) { |
| 223 | case CONS_VGA: |
| 224 | break; |
| 225 | case CONS_GENFB: |
| 226 | break; |
| 227 | case CONS_NONE: |
| 228 | break; |
| 229 | default: |
| 230 | break; |
| 231 | } |
| 232 | } |
| 233 | |
| 234 | static int |
| 235 | radeonfb_genfb_ioctl(void *v, void *vs, unsigned long cmd, void *data, int flag, |
| 236 | struct lwp *l) |
| 237 | { |
| 238 | struct genfb_softc *const genfb = v; |
| 239 | struct radeonfb_softc *const sc = container_of(genfb, |
| 240 | struct radeonfb_softc, sc_genfb); |
| 241 | struct drm_device *const dev = sc->sc_rfa.rfa_fb_helper->dev; |
| 242 | const struct pci_attach_args *const pa = &dev->pdev->pd_pa; |
| 243 | |
| 244 | switch (cmd) { |
| 245 | case WSDISPLAYIO_GTYPE: |
| 246 | *(unsigned int *)data = WSDISPLAY_TYPE_PCIVGA; |
| 247 | return 0; |
| 248 | |
| 249 | /* PCI config read/write passthrough. */ |
| 250 | case PCI_IOC_CFGREAD: |
| 251 | case PCI_IOC_CFGWRITE: |
| 252 | return pci_devioctl(pa->pa_pc, pa->pa_tag, cmd, data, flag, l); |
| 253 | |
| 254 | case WSDISPLAYIO_GET_BUSID: |
| 255 | return wsdisplayio_busid_pci(dev->dev, pa->pa_pc, pa->pa_tag, |
| 256 | data); |
| 257 | |
| 258 | default: |
| 259 | return EPASSTHROUGH; |
| 260 | } |
| 261 | } |
| 262 | |
| 263 | static paddr_t |
| 264 | radeonfb_genfb_mmap(void *v, void *vs, off_t offset, int prot) |
| 265 | { |
| 266 | struct genfb_softc *const genfb = v; |
| 267 | struct radeonfb_softc *const sc = container_of(genfb, |
| 268 | struct radeonfb_softc, sc_genfb); |
| 269 | struct drm_fb_helper *const helper = sc->sc_rfa.rfa_fb_helper; |
| 270 | struct drm_framebuffer *const fb = helper->fb; |
| 271 | struct radeon_framebuffer *const rfb = container_of(fb, |
| 272 | struct radeon_framebuffer, base); |
| 273 | struct drm_gem_object *const gobj = rfb->obj; |
| 274 | struct radeon_bo *const rbo = gem_to_radeon_bo(gobj); |
| 275 | struct drm_device *const dev = helper->dev; |
| 276 | const struct pci_attach_args *const pa = &dev->pdev->pd_pa; |
| 277 | unsigned int i; |
| 278 | |
| 279 | if (offset < 0) |
| 280 | return -1; |
| 281 | |
| 282 | /* Treat low memory as the framebuffer itself. */ |
| 283 | if (offset < genfb->sc_fbsize) { |
| 284 | const unsigned num_pages __diagused = rbo->tbo.num_pages; |
| 285 | int flags = 0; |
| 286 | |
| 287 | KASSERT(genfb->sc_fbsize == (num_pages << PAGE_SHIFT)); |
| 288 | KASSERT(rbo->tbo.mem.bus.is_iomem); |
| 289 | |
| 290 | if (ISSET(rbo->tbo.mem.placement, TTM_PL_FLAG_WC)) |
| 291 | flags |= BUS_SPACE_MAP_PREFETCHABLE; |
| 292 | |
| 293 | return bus_space_mmap(rbo->tbo.bdev->memt, |
| 294 | rbo->tbo.mem.bus.base, rbo->tbo.mem.bus.offset + offset, |
| 295 | prot, flags); |
| 296 | } |
| 297 | |
| 298 | /* XXX Cargo-culted from genfb_pci. */ |
| 299 | if (kauth_authorize_machdep(kauth_cred_get(), |
| 300 | KAUTH_MACHDEP_UNMANAGEDMEM, NULL, NULL, NULL, NULL) != 0) { |
| 301 | aprint_normal_dev(dev->dev, "mmap at %" PRIxMAX" rejected\n" , |
| 302 | (uintmax_t)offset); |
| 303 | return -1; |
| 304 | } |
| 305 | |
| 306 | for (i = 0; PCI_BAR(i) <= PCI_MAPREG_ROM; i++) { |
| 307 | pcireg_t type; |
| 308 | bus_addr_t addr; |
| 309 | bus_size_t size; |
| 310 | int flags; |
| 311 | |
| 312 | /* Interrogate the BAR. */ |
| 313 | if (!pci_mapreg_probe(pa->pa_pc, pa->pa_tag, PCI_BAR(i), |
| 314 | &type)) |
| 315 | continue; |
| 316 | if (PCI_MAPREG_TYPE(type) != PCI_MAPREG_TYPE_MEM) |
| 317 | continue; |
| 318 | if (pci_mapreg_info(pa->pa_pc, pa->pa_tag, PCI_BAR(i), type, |
| 319 | &addr, &size, &flags)) |
| 320 | continue; |
| 321 | |
| 322 | /* Try to map it if it's in range. */ |
| 323 | if ((addr <= offset) && (offset < (addr + size))) |
| 324 | return bus_space_mmap(pa->pa_memt, addr, |
| 325 | (offset - addr), prot, flags); |
| 326 | |
| 327 | /* Skip a slot if this was a 64-bit BAR. */ |
| 328 | if ((PCI_MAPREG_TYPE(type) == PCI_MAPREG_TYPE_MEM) && |
| 329 | (PCI_MAPREG_MEM_TYPE(type) == PCI_MAPREG_MEM_TYPE_64BIT)) |
| 330 | i += 1; |
| 331 | } |
| 332 | |
| 333 | /* Failure! */ |
| 334 | return -1; |
| 335 | } |
| 336 | |
| 337 | static int |
| 338 | radeonfb_genfb_enable_polling(void *cookie) |
| 339 | { |
| 340 | struct genfb_softc *const genfb = cookie; |
| 341 | struct radeonfb_softc *const sc = container_of(genfb, |
| 342 | struct radeonfb_softc, sc_genfb); |
| 343 | |
| 344 | return drm_fb_helper_debug_enter_fb(sc->sc_rfa.rfa_fb_helper); |
| 345 | } |
| 346 | |
| 347 | static int |
| 348 | radeonfb_genfb_disable_polling(void *cookie) |
| 349 | { |
| 350 | struct genfb_softc *const genfb = cookie; |
| 351 | struct radeonfb_softc *const sc = container_of(genfb, |
| 352 | struct radeonfb_softc, sc_genfb); |
| 353 | |
| 354 | return drm_fb_helper_debug_leave_fb(sc->sc_rfa.rfa_fb_helper); |
| 355 | } |
| 356 | |
| 357 | static bool |
| 358 | radeonfb_genfb_shutdown(device_t self, int flags) |
| 359 | { |
| 360 | genfb_enable_polling(self); |
| 361 | return true; |
| 362 | } |
| 363 | |
| 364 | static bool |
| 365 | radeonfb_genfb_setmode(struct genfb_softc *genfb, int mode) |
| 366 | { |
| 367 | struct radeonfb_softc *sc = (struct radeonfb_softc *)genfb; |
| 368 | |
| 369 | if (mode == WSDISPLAYIO_MODE_EMUL) { |
| 370 | drm_fb_helper_set_config(sc->sc_rfa.rfa_fb_helper); |
| 371 | } |
| 372 | |
| 373 | return true; |
| 374 | } |
| 375 | |