radeon_pci.c revision 1.16
1 /* $NetBSD: radeon_pci.c,v 1.16 2021/12/19 09:56:17 riastradh 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 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: radeon_pci.c,v 1.16 2021/12/19 09:56:17 riastradh Exp $"); 34 35 #ifdef _KERNEL_OPT 36 #include "vga.h" 37 #if defined(__arm__) || defined(__aarch64__) 38 #include "opt_fdt.h" 39 #endif 40 #endif 41 42 #include <sys/types.h> 43 #include <sys/queue.h> 44 #include <sys/systm.h> 45 #include <sys/workqueue.h> 46 47 #include <dev/pci/pciio.h> 48 #include <dev/pci/pcireg.h> 49 #include <dev/pci/pcivar.h> 50 51 #include <dev/pci/wsdisplay_pci.h> 52 #include <dev/wsfb/genfbvar.h> 53 54 #if NVGA > 0 55 /* 56 * XXX All we really need is vga_is_console from vgavar.h, but the 57 * header files are missing their own dependencies, so we need to 58 * explicitly drag in the other crap. 59 */ 60 #include <dev/ic/mc6845reg.h> 61 #include <dev/ic/pcdisplayvar.h> 62 #include <dev/ic/vgareg.h> 63 #include <dev/ic/vgavar.h> 64 #endif 65 66 #ifdef FDT 67 #include <dev/fdt/fdtvar.h> 68 #endif 69 70 #include <drm/drm_pci.h> 71 #include <drm/drm_fb_helper.h> 72 73 #include <radeon.h> 74 #include "radeon_drv.h" 75 #include "radeon_task.h" 76 77 SIMPLEQ_HEAD(radeon_task_head, radeon_task); 78 79 struct radeon_softc { 80 device_t sc_dev; 81 struct pci_attach_args sc_pa; 82 enum { 83 RADEON_TASK_ATTACH, 84 RADEON_TASK_WORKQUEUE, 85 } sc_task_state; 86 union { 87 struct workqueue *workqueue; 88 struct radeon_task_head attach; 89 } sc_task_u; 90 struct drm_device *sc_drm_dev; 91 struct pci_dev sc_pci_dev; 92 #if defined(__i386__) 93 #define RADEON_PCI_UGLY_MAP_HACK 94 /* XXX Used to claim the VGA device before attach_real */ 95 bus_space_handle_t sc_temp_memh; 96 bool sc_temp_set; 97 #endif 98 }; 99 100 struct radeon_device * 101 radeon_device_private(device_t self) 102 { 103 struct radeon_softc *const sc = device_private(self); 104 105 return sc->sc_drm_dev->dev_private; 106 } 107 108 static bool radeon_pci_lookup(const struct pci_attach_args *, 109 unsigned long *); 110 111 static int radeon_match(device_t, cfdata_t, void *); 112 static void radeon_attach(device_t, device_t, void *); 113 static void radeon_attach_real(device_t); 114 static int radeon_detach(device_t, int); 115 static bool radeon_do_suspend(device_t, const pmf_qual_t *); 116 static bool radeon_do_resume(device_t, const pmf_qual_t *); 117 118 static void radeon_task_work(struct work *, void *); 119 120 CFATTACH_DECL_NEW(radeon, sizeof(struct radeon_softc), 121 radeon_match, radeon_attach, radeon_detach, NULL); 122 123 /* XXX Kludge to get these from radeon_drv.c. */ 124 extern struct drm_driver *const radeon_drm_driver; 125 extern const struct pci_device_id *const radeon_device_ids; 126 extern const size_t radeon_n_device_ids; 127 128 /* Set this to false if you want to match R100/R200 */ 129 bool radeon_pci_ignore_r100_r200 = true; 130 131 static bool 132 radeon_pci_lookup(const struct pci_attach_args *pa, unsigned long *flags) 133 { 134 size_t i; 135 enum radeon_family fam; 136 137 for (i = 0; i < radeon_n_device_ids; i++) { 138 if ((PCI_VENDOR(pa->pa_id) == radeon_device_ids[i].vendor) && 139 (PCI_PRODUCT(pa->pa_id) == radeon_device_ids[i].device)) 140 break; 141 } 142 143 /* Did we find it? */ 144 if (i == radeon_n_device_ids) 145 return false; 146 147 /* NetBSD drm2 fails on R100 and many R200 chipsets, disable for now */ 148 fam = radeon_device_ids[i].driver_data & RADEON_FAMILY_MASK; 149 if (radeon_pci_ignore_r100_r200 && fam < CHIP_RV280) 150 return false; 151 152 if (flags) 153 *flags = radeon_device_ids[i].driver_data; 154 return true; 155 } 156 157 static int 158 radeon_match(device_t parent, cfdata_t match, void *aux) 159 { 160 extern int radeon_guarantee_initialized(void); 161 const struct pci_attach_args *const pa = aux; 162 int error; 163 164 error = radeon_guarantee_initialized(); 165 if (error) { 166 aprint_error("radeon: failed to initialize: %d\n", error); 167 return 0; 168 } 169 170 if (!radeon_pci_lookup(pa, NULL)) 171 return 0; 172 173 return 6; /* XXX Beat genfb_pci... */ 174 } 175 176 static void 177 radeon_attach(device_t parent, device_t self, void *aux) 178 { 179 struct radeon_softc *const sc = device_private(self); 180 const struct pci_attach_args *const pa = aux; 181 182 pci_aprint_devinfo(pa, NULL); 183 184 if (!pmf_device_register(self, &radeon_do_suspend, &radeon_do_resume)) 185 aprint_error_dev(self, "unable to establish power handler\n"); 186 187 /* 188 * Trivial initialization first; the rest will come after we 189 * have mounted the root file system and can load firmware 190 * images. 191 */ 192 sc->sc_dev = NULL; 193 sc->sc_pa = *pa; 194 195 #ifdef RADEON_PCI_UGLY_MAP_HACK 196 /* 197 * XXX 198 * We try to map the VGA registers, in case we can prevent vga@isa or 199 * pcdisplay@isa attaching, and stealing wsdisplay0. This only works 200 * with serial console, as actual VGA console has already mapped them. 201 * The only way to handle that is for vga@isa to not attach. 202 */ 203 int rv = bus_space_map(pa->pa_memt, 0xb0000, 0x10000, 0, 204 &sc->sc_temp_memh); 205 sc->sc_temp_set = rv == 0; 206 if (rv != 0) 207 aprint_error_dev(self, "unable to reserve VGA registers for " 208 "i386 radeondrmkms hack\n"); 209 #endif 210 211 #ifdef FDT 212 /* 213 * XXX Remove the simple framebuffer, assuming that this device 214 * will take over. 215 */ 216 const char *fb_compatible[] = { "simple-framebuffer", NULL }; 217 fdt_remove_bycompat(fb_compatible); 218 #endif 219 220 config_mountroot(self, &radeon_attach_real); 221 } 222 223 static void 224 radeon_attach_real(device_t self) 225 { 226 struct radeon_softc *const sc = device_private(self); 227 const struct pci_attach_args *const pa = &sc->sc_pa; 228 bool ok __diagused; 229 unsigned long flags; 230 int error; 231 232 ok = radeon_pci_lookup(pa, &flags); 233 KASSERT(ok); 234 235 #ifdef RADEON_PCI_UGLY_MAP_HACK 236 /* 237 * XXX 238 * Unmap the VGA registers. 239 */ 240 if (sc->sc_temp_set) 241 bus_space_unmap(pa->pa_memt, sc->sc_temp_memh, 0x10000); 242 #endif 243 244 sc->sc_task_state = RADEON_TASK_ATTACH; 245 SIMPLEQ_INIT(&sc->sc_task_u.attach); 246 247 /* Initialize the Linux PCI device descriptor. */ 248 linux_pci_dev_init(&sc->sc_pci_dev, self, device_parent(self), pa, 0); 249 250 /* XXX errno Linux->NetBSD */ 251 error = -drm_pci_attach(self, pa, &sc->sc_pci_dev, radeon_drm_driver, 252 flags, &sc->sc_drm_dev); 253 if (error) { 254 aprint_error_dev(self, "unable to attach drm: %d\n", error); 255 goto out; 256 } 257 258 while (!SIMPLEQ_EMPTY(&sc->sc_task_u.attach)) { 259 struct radeon_task *const task = 260 SIMPLEQ_FIRST(&sc->sc_task_u.attach); 261 262 SIMPLEQ_REMOVE_HEAD(&sc->sc_task_u.attach, rt_u.queue); 263 (*task->rt_fn)(task); 264 } 265 266 sc->sc_task_state = RADEON_TASK_WORKQUEUE; 267 error = workqueue_create(&sc->sc_task_u.workqueue, "radeonfb", 268 &radeon_task_work, NULL, PRI_NONE, IPL_NONE, WQ_MPSAFE); 269 if (error) { 270 aprint_error_dev(self, "unable to create workqueue: %d\n", 271 error); 272 sc->sc_task_u.workqueue = NULL; 273 goto out; 274 } 275 276 out: sc->sc_dev = self; 277 } 278 279 static int 280 radeon_detach(device_t self, int flags) 281 { 282 struct radeon_softc *const sc = device_private(self); 283 int error; 284 285 if (sc->sc_dev == NULL) 286 /* Not done attaching. */ 287 return EBUSY; 288 289 /* XXX Check for in-use before tearing it all down... */ 290 error = config_detach_children(self, flags); 291 if (error) 292 return error; 293 294 if (sc->sc_task_state == RADEON_TASK_ATTACH) 295 goto out; 296 if (sc->sc_task_u.workqueue != NULL) { 297 workqueue_destroy(sc->sc_task_u.workqueue); 298 sc->sc_task_u.workqueue = NULL; 299 } 300 301 if (sc->sc_drm_dev == NULL) 302 goto out; 303 /* XXX errno Linux->NetBSD */ 304 error = -drm_pci_detach(sc->sc_drm_dev, flags); 305 if (error) 306 /* XXX Kinda too late to fail now... */ 307 return error; 308 sc->sc_drm_dev = NULL; 309 310 out: linux_pci_dev_destroy(&sc->sc_pci_dev); 311 pmf_device_deregister(self); 312 313 return 0; 314 } 315 316 static bool 317 radeon_do_suspend(device_t self, const pmf_qual_t *qual) 318 { 319 struct radeon_softc *const sc = device_private(self); 320 struct drm_device *const dev = sc->sc_drm_dev; 321 int ret; 322 bool is_console = true; /* XXX */ 323 324 if (dev == NULL) 325 return true; 326 327 ret = radeon_suspend_kms(dev, true, is_console, false); 328 if (ret) 329 return false; 330 331 return true; 332 } 333 334 static bool 335 radeon_do_resume(device_t self, const pmf_qual_t *qual) 336 { 337 struct radeon_softc *const sc = device_private(self); 338 struct drm_device *const dev = sc->sc_drm_dev; 339 int ret; 340 bool is_console = true; /* XXX */ 341 342 if (dev == NULL) 343 return true; 344 345 ret = radeon_resume_kms(dev, true, is_console); 346 if (ret) 347 return false; 348 349 return true; 350 } 351 352 static void 353 radeon_task_work(struct work *work, void *cookie __unused) 354 { 355 struct radeon_task *const task = container_of(work, struct radeon_task, 356 rt_u.work); 357 358 (*task->rt_fn)(task); 359 } 360 361 int 362 radeon_task_schedule(device_t self, struct radeon_task *task) 363 { 364 struct radeon_softc *const sc = device_private(self); 365 366 switch (sc->sc_task_state) { 367 case RADEON_TASK_ATTACH: 368 SIMPLEQ_INSERT_TAIL(&sc->sc_task_u.attach, task, rt_u.queue); 369 return 0; 370 case RADEON_TASK_WORKQUEUE: 371 if (sc->sc_task_u.workqueue == NULL) { 372 aprint_error_dev(self, "unable to schedule task\n"); 373 return EIO; 374 } 375 workqueue_enqueue(sc->sc_task_u.workqueue, &task->rt_u.work, 376 NULL); 377 return 0; 378 default: 379 panic("radeon in invalid task state: %d\n", 380 (int)sc->sc_task_state); 381 } 382 } 383
Indexes created Tue Oct 21 08:09:48 GMT 2025