radeon_pci.c revision 1.13
1 /* $NetBSD: radeon_pci.c,v 1.13 2018/08/27 14:12:14 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 1.13 2018/08/27 14:12:14 riastradh Exp $"); 34 35 #ifdef _KERNEL_OPT 36 #include "vga.h" 37 #endif 38 39 #include <sys/types.h> 40 #include <sys/queue.h> 41 #include <sys/systm.h> 42 #include <sys/workqueue.h> 43 44 #include <dev/pci/pciio.h> 45 #include <dev/pci/pcireg.h> 46 #include <dev/pci/pcivar.h> 47 48 #include <dev/pci/wsdisplay_pci.h> 49 #include <dev/wsfb/genfbvar.h> 50 51 #if NVGA > 0 52 /* 53 * XXX All we really need is vga_is_console from vgavar.h, but the 54 * header files are missing their own dependencies, so we need to 55 * explicitly drag in the other crap. 56 */ 57 #include <dev/ic/mc6845reg.h> 58 #include <dev/ic/pcdisplayvar.h> 59 #include <dev/ic/vgareg.h> 60 #include <dev/ic/vgavar.h> 61 #endif 62 63 #include <drm/drmP.h> 64 #include <drm/drm_fb_helper.h> 65 66 #include <radeon.h> 67 #include "radeon_drv.h" 68 #include "radeon_task.h" 69 70 SIMPLEQ_HEAD(radeon_task_head, radeon_task); 71 72 struct radeon_softc { 73 device_t sc_dev; 74 struct pci_attach_args sc_pa; 75 enum { 76 RADEON_TASK_ATTACH, 77 RADEON_TASK_WORKQUEUE, 78 } sc_task_state; 79 union { 80 struct workqueue *workqueue; 81 struct radeon_task_head attach; 82 } sc_task_u; 83 struct drm_device *sc_drm_dev; 84 struct pci_dev sc_pci_dev; 85 #if defined(__i386__) 86 #define RADEON_PCI_UGLY_MAP_HACK 87 /* XXX Used to claim the VGA device before attach_real */ 88 bus_space_handle_t sc_temp_memh; 89 bool sc_temp_set; 90 #endif 91 }; 92 93 struct radeon_device * 94 radeon_device_private(device_t self) 95 { 96 struct radeon_softc *const sc = device_private(self); 97 98 return sc->sc_drm_dev->dev_private; 99 } 100 101 static bool radeon_pci_lookup(const struct pci_attach_args *, 102 unsigned long *); 103 104 static int radeon_match(device_t, cfdata_t, void *); 105 static void radeon_attach(device_t, device_t, void *); 106 static void radeon_attach_real(device_t); 107 static int radeon_detach(device_t, int); 108 static bool radeon_do_suspend(device_t, const pmf_qual_t *); 109 static bool radeon_do_resume(device_t, const pmf_qual_t *); 110 111 static void radeon_task_work(struct work *, void *); 112 113 CFATTACH_DECL_NEW(radeon, sizeof(struct radeon_softc), 114 radeon_match, radeon_attach, radeon_detach, NULL); 115 116 /* XXX Kludge to get these from radeon_drv.c. */ 117 extern struct drm_driver *const radeon_drm_driver; 118 extern const struct pci_device_id *const radeon_device_ids; 119 extern const size_t radeon_n_device_ids; 120 121 /* Set this to false if you want to match R100/R200 */ 122 bool radeon_pci_ignore_r100_r200 = true; 123 124 static bool 125 radeon_pci_lookup(const struct pci_attach_args *pa, unsigned long *flags) 126 { 127 size_t i; 128 enum radeon_family fam; 129 130 for (i = 0; i < radeon_n_device_ids; i++) { 131 if ((PCI_VENDOR(pa->pa_id) == radeon_device_ids[i].vendor) && 132 (PCI_PRODUCT(pa->pa_id) == radeon_device_ids[i].device)) 133 break; 134 } 135 136 /* Did we find it? */ 137 if (i == radeon_n_device_ids) 138 return false; 139 140 /* NetBSD drm2 fails on R100 and many R200 chipsets, disable for now */ 141 fam = radeon_device_ids[i].driver_data & RADEON_FAMILY_MASK; 142 if (radeon_pci_ignore_r100_r200 && fam < CHIP_RV280) 143 return false; 144 145 if (flags) 146 *flags = radeon_device_ids[i].driver_data; 147 return true; 148 } 149 150 static int 151 radeon_match(device_t parent, cfdata_t match, void *aux) 152 { 153 extern int radeon_guarantee_initialized(void); 154 const struct pci_attach_args *const pa = aux; 155 int error; 156 157 error = radeon_guarantee_initialized(); 158 if (error) { 159 aprint_error("radeon: failed to initialize: %d\n", error); 160 return 0; 161 } 162 163 if (!radeon_pci_lookup(pa, NULL)) 164 return 0; 165 166 return 6; /* XXX Beat genfb_pci... */ 167 } 168 169 static void 170 radeon_attach(device_t parent, device_t self, void *aux) 171 { 172 struct radeon_softc *const sc = device_private(self); 173 const struct pci_attach_args *const pa = aux; 174 175 pci_aprint_devinfo(pa, NULL); 176 177 if (!pmf_device_register(self, &radeon_do_suspend, &radeon_do_resume)) 178 aprint_error_dev(self, "unable to establish power handler\n"); 179 180 /* 181 * Trivial initialization first; the rest will come after we 182 * have mounted the root file system and can load firmware 183 * images. 184 */ 185 sc->sc_dev = NULL; 186 sc->sc_pa = *pa; 187 188 #ifdef RADEON_PCI_UGLY_MAP_HACK 189 /* 190 * XXX 191 * We try to map the VGA registers, in case we can prevent vga@isa or 192 * pcdisplay@isa attaching, and stealing wsdisplay0. This only works 193 * with serial console, as actual VGA console has already mapped them. 194 * The only way to handle that is for vga@isa to not attach. 195 */ 196 int rv = bus_space_map(pa->pa_memt, 0xb0000, 0x10000, 0, 197 &sc->sc_temp_memh); 198 sc->sc_temp_set = rv == 0; 199 if (rv != 0) 200 aprint_error_dev(self, "unable to reserve VGA registers for " 201 "i386 radeondrmkms hack\n"); 202 #endif 203 204 config_mountroot(self, &radeon_attach_real); 205 } 206 207 static void 208 radeon_attach_real(device_t self) 209 { 210 struct radeon_softc *const sc = device_private(self); 211 const struct pci_attach_args *const pa = &sc->sc_pa; 212 bool ok __diagused; 213 unsigned long flags; 214 int error; 215 216 ok = radeon_pci_lookup(pa, &flags); 217 KASSERT(ok); 218 219 #ifdef RADEON_PCI_UGLY_MAP_HACK 220 /* 221 * XXX 222 * Unmap the VGA registers. 223 */ 224 if (sc->sc_temp_set) 225 bus_space_unmap(pa->pa_memt, sc->sc_temp_memh, 0x10000); 226 #endif 227 228 sc->sc_task_state = RADEON_TASK_ATTACH; 229 SIMPLEQ_INIT(&sc->sc_task_u.attach); 230 231 /* Initialize the Linux PCI device descriptor. */ 232 linux_pci_dev_init(&sc->sc_pci_dev, self, device_parent(self), pa, 0); 233 234 /* XXX errno Linux->NetBSD */ 235 error = -drm_pci_attach(self, pa, &sc->sc_pci_dev, radeon_drm_driver, 236 flags, &sc->sc_drm_dev); 237 if (error) { 238 aprint_error_dev(self, "unable to attach drm: %d\n", error); 239 goto out; 240 } 241 242 while (!SIMPLEQ_EMPTY(&sc->sc_task_u.attach)) { 243 struct radeon_task *const task = 244 SIMPLEQ_FIRST(&sc->sc_task_u.attach); 245 246 SIMPLEQ_REMOVE_HEAD(&sc->sc_task_u.attach, rt_u.queue); 247 (*task->rt_fn)(task); 248 } 249 250 sc->sc_task_state = RADEON_TASK_WORKQUEUE; 251 error = workqueue_create(&sc->sc_task_u.workqueue, "radeonfb", 252 &radeon_task_work, NULL, PRI_NONE, IPL_NONE, WQ_MPSAFE); 253 if (error) { 254 aprint_error_dev(self, "unable to create workqueue: %d\n", 255 error); 256 sc->sc_task_u.workqueue = NULL; 257 goto out; 258 } 259 260 out: sc->sc_dev = self; 261 } 262 263 static int 264 radeon_detach(device_t self, int flags) 265 { 266 struct radeon_softc *const sc = device_private(self); 267 int error; 268 269 if (sc->sc_dev == NULL) 270 /* Not done attaching. */ 271 return EBUSY; 272 273 /* XXX Check for in-use before tearing it all down... */ 274 error = config_detach_children(self, flags); 275 if (error) 276 return error; 277 278 if (sc->sc_task_state == RADEON_TASK_ATTACH) 279 goto out; 280 if (sc->sc_task_u.workqueue != NULL) { 281 workqueue_destroy(sc->sc_task_u.workqueue); 282 sc->sc_task_u.workqueue = NULL; 283 } 284 285 if (sc->sc_drm_dev == NULL) 286 goto out; 287 /* XXX errno Linux->NetBSD */ 288 error = -drm_pci_detach(sc->sc_drm_dev, flags); 289 if (error) 290 /* XXX Kinda too late to fail now... */ 291 return error; 292 sc->sc_drm_dev = NULL; 293 294 out: linux_pci_dev_destroy(&sc->sc_pci_dev); 295 pmf_device_deregister(self); 296 297 return 0; 298 } 299 300 static bool 301 radeon_do_suspend(device_t self, const pmf_qual_t *qual) 302 { 303 struct radeon_softc *const sc = device_private(self); 304 struct drm_device *const dev = sc->sc_drm_dev; 305 int ret; 306 bool is_console = true; /* XXX */ 307 308 if (dev == NULL) 309 return true; 310 311 ret = radeon_suspend_kms(dev, true, is_console); 312 if (ret) 313 return false; 314 315 return true; 316 } 317 318 static bool 319 radeon_do_resume(device_t self, const pmf_qual_t *qual) 320 { 321 struct radeon_softc *const sc = device_private(self); 322 struct drm_device *const dev = sc->sc_drm_dev; 323 int ret; 324 bool is_console = true; /* XXX */ 325 326 if (dev == NULL) 327 return true; 328 329 ret = radeon_resume_kms(dev, true, is_console); 330 if (ret) 331 return false; 332 333 return true; 334 } 335 336 static void 337 radeon_task_work(struct work *work, void *cookie __unused) 338 { 339 struct radeon_task *const task = container_of(work, struct radeon_task, 340 rt_u.work); 341 342 (*task->rt_fn)(task); 343 } 344 345 int 346 radeon_task_schedule(device_t self, struct radeon_task *task) 347 { 348 struct radeon_softc *const sc = device_private(self); 349 350 switch (sc->sc_task_state) { 351 case RADEON_TASK_ATTACH: 352 SIMPLEQ_INSERT_TAIL(&sc->sc_task_u.attach, task, rt_u.queue); 353 return 0; 354 case RADEON_TASK_WORKQUEUE: 355 if (sc->sc_task_u.workqueue == NULL) { 356 aprint_error_dev(self, "unable to schedule task\n"); 357 return EIO; 358 } 359 workqueue_enqueue(sc->sc_task_u.workqueue, &task->rt_u.work, 360 NULL); 361 return 0; 362 default: 363 panic("radeon in invalid task state: %d\n", 364 (int)sc->sc_task_state); 365 } 366 } 367
Indexes created Fri Oct 17 17:09:57 GMT 2025